Index: head/lib/Makefile =================================================================== --- head/lib/Makefile (revision 324958) +++ head/lib/Makefile (revision 324959) @@ -1,202 +1,202 @@ # @(#)Makefile 8.1 (Berkeley) 6/4/93 # $FreeBSD$ .include # The SUBDIR_BOOTSTRAP list is a small set of libraries which are used by many # of the other libraries. These are built first with a .WAIT between them # and the main list to avoid needing a SUBDIR_DEPEND line on every library # naming just these few items. SUBDIR_BOOTSTRAP= \ csu \ .WAIT \ libc \ libc_nonshared \ libcompiler_rt \ ${_libclang_rt} \ ${_libcplusplus} \ ${_libcxxrt} \ libelf \ msun # The main list; please keep these sorted alphabetically. SUBDIR= ${SUBDIR_BOOTSTRAP} \ .WAIT \ libalias \ libarchive \ libauditd \ libbegemot \ libblocksruntime \ libbsdstat \ libbsm \ libbz2 \ libcalendar \ libcam \ libcapsicum \ libcompat \ libcrypt \ libdevctl \ libdevinfo \ libdevstat \ ${_libdl} \ libdwarf \ libedit \ libevent \ libexecinfo \ libexpat \ libfetch \ libfigpar \ libgeom \ libifconfig \ libipsec \ libjail \ libkiconv \ libkvm \ liblzma \ libmemstat \ libmd \ libmt \ lib80211 \ libnetbsd \ libnv \ libopenbsd \ libopie \ libpam \ libpcap \ libpjdlog \ ${_libproc} \ libprocstat \ librpcsvc \ librss \ librt \ ${_librtld_db} \ libsbuf \ libsmb \ libsqlite3 \ libstdbuf \ libstdthreads \ libsysdecode \ libtacplus \ libthread_db \ libucl \ libufs \ libugidfw \ libulog \ libutil \ ${_libvgl} \ libwrap \ libxo \ liby \ libz \ libzstd \ ncurses # Inter-library dependencies. When the makefile for a library contains LDADD # libraries, those libraries should be listed as build order dependencies here. SUBDIR_DEPEND_libarchive= libz libbz2 libexpat liblzma libmd SUBDIR_DEPEND_libauditdm= libbsm SUBDIR_DEPEND_libbsnmp= ${_libnetgraph} SUBDIR_DEPEND_libc++:= libcxxrt SUBDIR_DEPEND_libc= libcompiler_rt SUBDIR_DEPEND_libcam= libsbuf SUBDIR_DEPEND_libcasper= libnv SUBDIR_DEPEND_libdevstat= libkvm SUBDIR_DEPEND_libdpv= libfigpar ncurses libutil SUBDIR_DEPEND_libedit= ncurses SUBDIR_DEPEND_libgeom= libexpat libsbuf SUBDIR_DEPEND_librpcsec_gss= libgssapi SUBDIR_DEPEND_libmagic= libz SUBDIR_DEPEND_libmemstat= libkvm SUBDIR_DEPEND_libopie= libmd SUBDIR_DEPEND_libpam= libcrypt libopie ${_libradius} librpcsvc libtacplus libutil ${_libypclnt} ${_libcom_err} SUBDIR_DEPEND_libpjdlog= libutil SUBDIR_DEPEND_libprocstat= libkvm libutil SUBDIR_DEPEND_libradius= libmd SUBDIR_DEPEND_libsmb= libkiconv SUBDIR_DEPEND_libtacplus= libmd SUBDIR_DEPEND_libulog= libmd SUBDIR_DEPEND_libunbound= ${_libldns} SUBDIR_DEPEND_liblzma= ${_libthr} # NB: keep these sorted by MK_* knobs SUBDIR.${MK_ATM}+= libngatm SUBDIR.${MK_BLACKLIST}+=libblacklist SUBDIR.${MK_BLUETOOTH}+=libbluetooth libsdp SUBDIR.${MK_BSNMP}+= libbsnmp SUBDIR.${MK_CASPER}+= libcasper .if !defined(COMPAT_32BIT) && !defined(COMPAT_SOFTFP) SUBDIR.${MK_CLANG}+= clang .endif SUBDIR.${MK_CUSE}+= libcuse SUBDIR.${MK_CXX}+= libdevdctl SUBDIR.${MK_TOOLCHAIN}+=libelftc libpe SUBDIR.${MK_DIALOG}+= libdpv SUBDIR.${MK_FILE}+= libmagic SUBDIR.${MK_GPIO}+= libgpio SUBDIR.${MK_GSSAPI}+= libgssapi librpcsec_gss SUBDIR.${MK_ICONV}+= libiconv_modules SUBDIR.${MK_KERBEROS_SUPPORT}+= libcom_err SUBDIR.${MK_LDNS}+= libldns # The libraries under libclang_rt can only be built by clang, and only make # sense to build when clang is enabled at all. Furthermore, they can only be # built for certain architectures. .if ${MK_CLANG} != "no" && ${COMPILER_TYPE} == "clang" && \ (${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ (${MACHINE_CPUARCH} == "arm" && ${MACHINE_ARCH} != "armeb") || \ (${MACHINE_CPUARCH} == "i386")) _libclang_rt= libclang_rt .endif .if ${MK_LIBCPLUSPLUS} != "no" _libcxxrt= libcxxrt _libcplusplus= libc++ _libcplusplus+= libc++experimental .endif SUBDIR.${MK_EFI}+= libefivar SUBDIR.${MK_LIBTHR}+= libthr SUBDIR.${MK_LLVM_LIBUNWIND}+= libgcc_eh SUBDIR.${MK_LLVM_LIBUNWIND}+= libgcc_s SUBDIR.${MK_NAND}+= libnandfs SUBDIR.${MK_NETGRAPH}+= libnetgraph SUBDIR.${MK_NIS}+= libypclnt .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" _libvgl= libvgl .endif .if ${MACHINE_CPUARCH} == "amd64" SUBDIR.${MK_BHYVE}+= libvmmapi .endif .if ${MACHINE_CPUARCH} != "sparc64" _libproc= libproc _librtld_db= librtld_db .endif .if defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mfilter} _libdl= libdl .endif SUBDIR.${MK_OPENSSL}+= libmp -SUBDIR.${MK_PMC}+= libpmc +SUBDIR.${MK_PMC}+= libpmc libpmcstat SUBDIR.${MK_RADIUS_SUPPORT}+= libradius SUBDIR.${MK_SENDMAIL}+= libmilter libsm libsmdb libsmutil SUBDIR.${MK_TELNET}+= libtelnet SUBDIR.${MK_TESTS_SUPPORT}+= atf SUBDIR.${MK_TESTS}+= tests SUBDIR.${MK_UNBOUND}+= libunbound SUBDIR.${MK_USB}+= libusbhid libusb .if !make(install) SUBDIR_PARALLEL= .endif .include Index: head/lib/libpmcstat/Makefile =================================================================== --- head/lib/libpmcstat/Makefile (nonexistent) +++ head/lib/libpmcstat/Makefile (revision 324959) @@ -0,0 +1,16 @@ +# $FreeBSD$ + +PACKAGE=lib${LIB} +LIB= pmcstat +INTERNALLIB= + +SRCS= \ + libpmcstat_event.c \ + libpmcstat_image.c \ + libpmcstat_logging.c \ + libpmcstat_process.c \ + libpmcstat_string.c \ + libpmcstat_symbol.c +INCS= libpmcstat.h + +.include Property changes on: head/lib/libpmcstat/Makefile ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat.h =================================================================== --- head/lib/libpmcstat/libpmcstat.h (nonexistent) +++ head/lib/libpmcstat/libpmcstat.h (revision 324959) @@ -0,0 +1,382 @@ +/*- + * Copyright (c) 2005-2007, Joseph Koshy + * Copyright (c) 2007 The FreeBSD Foundation + * All rights reserved. + * + * Portions of this software were developed by A. Joseph Koshy under + * sponsorship from the FreeBSD Foundation and Google, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LIBPMCSTAT_H_ +#define _LIBPMCSTAT_H_ + +#include +#include + +#include +#include + +#define PMCSTAT_ALLOCATE 1 + +#define NSOCKPAIRFD 2 +#define PARENTSOCKET 0 +#define CHILDSOCKET 1 + +#define PMCSTAT_OPEN_FOR_READ 0 +#define PMCSTAT_OPEN_FOR_WRITE 1 +#define READPIPEFD 0 +#define WRITEPIPEFD 1 +#define NPIPEFD 2 + +#define PMCSTAT_NHASH 256 +#define PMCSTAT_HASH_MASK 0xFF + +typedef const void *pmcstat_interned_string; +struct pmc_plugins; + +enum pmcstat_state { + PMCSTAT_FINISHED = 0, + PMCSTAT_EXITING = 1, + PMCSTAT_RUNNING = 2 +}; + +struct pmcstat_ev { + STAILQ_ENTRY(pmcstat_ev) ev_next; + int ev_count; /* associated count if in sampling mode */ + uint32_t ev_cpu; /* cpus for this event */ + int ev_cumulative; /* show cumulative counts */ + int ev_flags; /* PMC_F_* */ + int ev_fieldskip; /* #leading spaces */ + int ev_fieldwidth; /* print width */ + enum pmc_mode ev_mode; /* desired mode */ + char *ev_name; /* (derived) event name */ + pmc_id_t ev_pmcid; /* allocated ID */ + pmc_value_t ev_saved; /* for incremental counts */ + char *ev_spec; /* event specification */ +}; + +struct pmcstat_target { + SLIST_ENTRY(pmcstat_target) pt_next; + pid_t pt_pid; +}; + +struct pmcstat_args { + int pa_flags; /* argument flags */ +#define FLAG_HAS_TARGET 0x00000001 /* process target */ +#define FLAG_HAS_WAIT_INTERVAL 0x00000002 /* -w secs */ +#define FLAG_HAS_OUTPUT_LOGFILE 0x00000004 /* -O file or pipe */ +#define FLAG_HAS_COMMANDLINE 0x00000008 /* command */ +#define FLAG_HAS_SAMPLING_PMCS 0x00000010 /* -S or -P */ +#define FLAG_HAS_COUNTING_PMCS 0x00000020 /* -s or -p */ +#define FLAG_HAS_PROCESS_PMCS 0x00000040 /* -P or -p */ +#define FLAG_HAS_SYSTEM_PMCS 0x00000080 /* -S or -s */ +#define FLAG_HAS_PIPE 0x00000100 /* implicit log */ +#define FLAG_READ_LOGFILE 0x00000200 /* -R file */ +#define FLAG_DO_GPROF 0x00000400 /* -g */ +#define FLAG_HAS_SAMPLESDIR 0x00000800 /* -D dir */ +#define FLAG_HAS_KERNELPATH 0x00001000 /* -k kernel */ +#define FLAG_DO_PRINT 0x00002000 /* -o */ +#define FLAG_DO_CALLGRAPHS 0x00004000 /* -G or -F */ +#define FLAG_DO_ANNOTATE 0x00008000 /* -m */ +#define FLAG_DO_TOP 0x00010000 /* -T */ +#define FLAG_DO_ANALYSIS 0x00020000 /* -g or -G or -m or -T */ +#define FLAGS_HAS_CPUMASK 0x00040000 /* -c */ +#define FLAG_HAS_DURATION 0x00080000 /* -l secs */ +#define FLAG_DO_WIDE_GPROF_HC 0x00100000 /* -e */ + + int pa_required; /* required features */ + int pa_pplugin; /* pre-processing plugin */ + int pa_plugin; /* analysis plugin */ + int pa_verbosity; /* verbosity level */ + FILE *pa_printfile; /* where to send printed output */ + int pa_logfd; /* output log file */ + char *pa_inputpath; /* path to input log */ + char *pa_outputpath; /* path to output log */ + void *pa_logparser; /* log file parser */ + const char *pa_fsroot; /* FS root where executables reside */ + char *pa_kernel; /* pathname of the kernel */ + const char *pa_samplesdir; /* directory for profile files */ + const char *pa_mapfilename;/* mapfile name */ + FILE *pa_graphfile; /* where to send the callgraph */ + int pa_graphdepth; /* print depth for callgraphs */ + double pa_interval; /* printing interval in seconds */ + cpuset_t pa_cpumask; /* filter for CPUs analysed */ + int pa_ctdumpinstr; /* dump instructions with calltree */ + int pa_topmode; /* delta or accumulative */ + int pa_toptty; /* output to tty or file */ + int pa_topcolor; /* terminal support color */ + int pa_mergepmc; /* merge PMC with same name */ + double pa_duration; /* time duration */ + int pa_argc; + char **pa_argv; + STAILQ_HEAD(, pmcstat_ev) pa_events; + SLIST_HEAD(, pmcstat_target) pa_targets; +}; + +/* + * Each function symbol tracked by pmcstat(8). + */ + +struct pmcstat_symbol { + pmcstat_interned_string ps_name; + uint64_t ps_start; + uint64_t ps_end; +}; + +/* + * A 'pmcstat_image' structure describes an executable program on + * disk. 'pi_execpath' is a cookie representing the pathname of + * the executable. 'pi_start' and 'pi_end' are the least and greatest + * virtual addresses for the text segments in the executable. + * 'pi_gmonlist' contains a linked list of gmon.out files associated + * with this image. + */ + +enum pmcstat_image_type { + PMCSTAT_IMAGE_UNKNOWN = 0, /* never looked at the image */ + PMCSTAT_IMAGE_INDETERMINABLE, /* can't tell what the image is */ + PMCSTAT_IMAGE_ELF32, /* ELF 32 bit object */ + PMCSTAT_IMAGE_ELF64, /* ELF 64 bit object */ + PMCSTAT_IMAGE_AOUT /* AOUT object */ +}; + +struct pmcstat_image { + LIST_ENTRY(pmcstat_image) pi_next; /* hash link */ + pmcstat_interned_string pi_execpath; /* cookie */ + pmcstat_interned_string pi_samplename; /* sample path name */ + pmcstat_interned_string pi_fullpath; /* path to FS object */ + pmcstat_interned_string pi_name; /* display name */ + + enum pmcstat_image_type pi_type; /* executable type */ + + /* + * Executables have pi_start and pi_end; these are zero + * for shared libraries. + */ + uintfptr_t pi_start; /* start address (inclusive) */ + uintfptr_t pi_end; /* end address (exclusive) */ + uintfptr_t pi_entry; /* entry address */ + uintfptr_t pi_vaddr; /* virtual address where loaded */ + int pi_isdynamic; /* whether a dynamic object */ + int pi_iskernelmodule; + pmcstat_interned_string pi_dynlinkerpath; /* path in .interp */ + + /* All symbols associated with this object. */ + struct pmcstat_symbol *pi_symbols; + size_t pi_symcount; + + /* Handle to addr2line for this image. */ + FILE *pi_addr2line; + + /* + * Plugins private data + */ + + /* gprof: + * An image can be associated with one or more gmon.out files; + * one per PMC. + */ + LIST_HEAD(,pmcstat_gmonfile) pi_gmlist; +}; + +extern LIST_HEAD(pmcstat_image_hash_list, pmcstat_image) pmcstat_image_hash[PMCSTAT_NHASH]; + +/* + * A simple implementation of interned strings. Each interned string + * is assigned a unique address, so that subsequent string compares + * can be done by a simple pointer comparison instead of using + * strcmp(). This speeds up hash table lookups and saves memory if + * duplicate strings are the norm. + */ +struct pmcstat_string { + LIST_ENTRY(pmcstat_string) ps_next; /* hash link */ + int ps_len; + int ps_hash; + char *ps_string; +}; + +/* + * A 'pmcstat_pcmap' structure maps a virtual address range to an + * underlying 'pmcstat_image' descriptor. + */ +struct pmcstat_pcmap { + TAILQ_ENTRY(pmcstat_pcmap) ppm_next; + uintfptr_t ppm_lowpc; + uintfptr_t ppm_highpc; + struct pmcstat_image *ppm_image; +}; + +/* + * A 'pmcstat_process' structure models processes. Each process is + * associated with a set of pmcstat_pcmap structures that map + * addresses inside it to executable objects. This set is implemented + * as a list, kept sorted in ascending order of mapped addresses. + * + * 'pp_pid' holds the pid of the process. When a process exits, the + * 'pp_isactive' field is set to zero, but the process structure is + * not immediately reclaimed because there may still be samples in the + * log for this process. + */ + +struct pmcstat_process { + LIST_ENTRY(pmcstat_process) pp_next; /* hash-next */ + pid_t pp_pid; /* associated pid */ + int pp_isactive; /* whether active */ + uintfptr_t pp_entryaddr; /* entry address */ + TAILQ_HEAD(,pmcstat_pcmap) pp_map; /* address range map */ +}; +extern LIST_HEAD(pmcstat_process_hash_list, pmcstat_process) pmcstat_process_hash[PMCSTAT_NHASH]; + +/* + * 'pmcstat_pmcrecord' is a mapping from PMC ids to human-readable + * names. + */ + +struct pmcstat_pmcrecord { + LIST_ENTRY(pmcstat_pmcrecord) pr_next; + pmc_id_t pr_pmcid; + int pr_pmcin; + pmcstat_interned_string pr_pmcname; + int pr_samples; + int pr_dubious_frames; + struct pmcstat_pmcrecord *pr_merge; +}; +extern LIST_HEAD(pmcstat_pmcs, pmcstat_pmcrecord) pmcstat_pmcs; /* PMC list */ + +struct pmc_plugins { + const char *pl_name; + + /* configure */ + int (*pl_configure)(char *opt); + + /* init and shutdown */ + int (*pl_init)(void); + void (*pl_shutdown)(FILE *mf); + + /* sample processing */ + void (*pl_process)(struct pmcstat_process *pp, + struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, + uintfptr_t *cc, int usermode, uint32_t cpu); + + /* image */ + void (*pl_initimage)(struct pmcstat_image *pi); + void (*pl_shutdownimage)(struct pmcstat_image *pi); + + /* pmc */ + void (*pl_newpmc)(pmcstat_interned_string ps, + struct pmcstat_pmcrecord *pr); + + /* top display */ + void (*pl_topdisplay)(void); + + /* top keypress */ + int (*pl_topkeypress)(int c, void *w); +}; + +/* + * Misc. statistics + */ +struct pmcstat_stats { + int ps_exec_aout; /* # a.out executables seen */ + int ps_exec_elf; /* # elf executables seen */ + int ps_exec_errors; /* # errors processing executables */ + int ps_exec_indeterminable; /* # unknown executables seen */ + int ps_samples_total; /* total number of samples processed */ + int ps_samples_skipped; /* #samples filtered out for any reason */ + int ps_samples_unknown_offset; /* #samples of rank 0 not in a map */ + int ps_samples_indeterminable; /* #samples in indeterminable images */ + int ps_samples_unknown_function;/* #samples with unknown function at offset */ + int ps_callchain_dubious_frames;/* #dubious frame pointers seen */ +}; + +__BEGIN_DECLS +int pmcstat_symbol_compare(const void *a, const void *b); +struct pmcstat_symbol *pmcstat_symbol_search(struct pmcstat_image *image, + uintfptr_t addr); +void pmcstat_image_add_symbols(struct pmcstat_image *image, Elf *e, + Elf_Scn *scn, GElf_Shdr *sh); + +const char *pmcstat_string_unintern(pmcstat_interned_string _is); +pmcstat_interned_string pmcstat_string_intern(const char *_s); +int pmcstat_string_compute_hash(const char *s); +pmcstat_interned_string pmcstat_string_lookup(const char *_s); +void pmcstat_image_get_elf_params(struct pmcstat_image *image, struct pmcstat_args *args); + +struct pmcstat_image * + pmcstat_image_from_path(pmcstat_interned_string internedpath, + int iskernelmodule, struct pmcstat_args *args, + struct pmc_plugins *plugins); +int pmcstat_string_lookup_hash(pmcstat_interned_string _is); + +void pmcstat_process_elf_exec(struct pmcstat_process *_pp, + struct pmcstat_image *_image, uintfptr_t _entryaddr, + struct pmcstat_args *args, struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats); + +void pmcstat_image_link(struct pmcstat_process *_pp, + struct pmcstat_image *_i, uintfptr_t _lpc); + +void pmcstat_process_aout_exec(struct pmcstat_process *_pp, + struct pmcstat_image *_image, uintfptr_t _entryaddr); +void pmcstat_process_exec(struct pmcstat_process *_pp, + pmcstat_interned_string _path, uintfptr_t _entryaddr, + struct pmcstat_args *args, struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats); +void pmcstat_image_determine_type(struct pmcstat_image *_image, struct pmcstat_args *args); +void pmcstat_image_get_aout_params(struct pmcstat_image *_image, struct pmcstat_args *args); +struct pmcstat_pcmap *pmcstat_process_find_map(struct pmcstat_process *_p, + uintfptr_t _pc); +void pmcstat_initialize_logging(struct pmcstat_process **pmcstat_kernproc, + struct pmcstat_args *args, struct pmc_plugins *plugins, + int *pmcstat_npmcs, int *pmcstat_mergepmc); +void pmcstat_shutdown_logging(struct pmcstat_args *args, + struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats); +struct pmcstat_process *pmcstat_process_lookup(pid_t _pid, int _allocate); +void pmcstat_clone_event_descriptor(struct pmcstat_ev *ev, const cpuset_t *cpumask, struct pmcstat_args *args); + +void pmcstat_create_process(int *pmcstat_sockpair, struct pmcstat_args *args, int pmcstat_kq); +void pmcstat_start_process(int *pmcstat_sockpair); + +void pmcstat_attach_pmcs(struct pmcstat_args *args); +struct pmcstat_symbol *pmcstat_symbol_search_by_name(struct pmcstat_process *pp, const char *pi_name, const char *name, uintptr_t *, uintptr_t *); + +void pmcstat_string_initialize(void); +void pmcstat_string_shutdown(void); + +int pmcstat_analyze_log(struct pmcstat_args *args, + struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats, + struct pmcstat_process *pmcstat_kernproc, + int pmcstat_mergepmc, + int *pmcstat_npmcs, + int *ps_samples_period); + +int pmcstat_open_log(const char *_p, int _mode); +int pmcstat_close_log(struct pmcstat_args *args); +__END_DECLS + +#endif /* !_LIBPMCSTAT_H_ */ Property changes on: head/lib/libpmcstat/libpmcstat.h ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_event.c =================================================================== --- head/lib/libpmcstat/libpmcstat_event.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_event.c (revision 324959) @@ -0,0 +1,72 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include + +#include +#include +#include +#include + +#include "libpmcstat.h" + +void +pmcstat_clone_event_descriptor(struct pmcstat_ev *ev, const cpuset_t *cpumask, + struct pmcstat_args *args) +{ + int cpu; + struct pmcstat_ev *ev_clone; + + for (cpu = 0; cpu < CPU_SETSIZE; cpu++) { + if (!CPU_ISSET(cpu, cpumask)) + continue; + + if ((ev_clone = malloc(sizeof(*ev_clone))) == NULL) + errx(EX_SOFTWARE, "ERROR: Out of memory"); + (void) memset(ev_clone, 0, sizeof(*ev_clone)); + + ev_clone->ev_count = ev->ev_count; + ev_clone->ev_cpu = cpu; + ev_clone->ev_cumulative = ev->ev_cumulative; + ev_clone->ev_flags = ev->ev_flags; + ev_clone->ev_mode = ev->ev_mode; + ev_clone->ev_name = strdup(ev->ev_name); + if (ev_clone->ev_name == NULL) + errx(EX_SOFTWARE, "ERROR: Out of memory"); + ev_clone->ev_pmcid = ev->ev_pmcid; + ev_clone->ev_saved = ev->ev_saved; + ev_clone->ev_spec = strdup(ev->ev_spec); + if (ev_clone->ev_spec == NULL) + errx(EX_SOFTWARE, "ERROR: Out of memory"); + + STAILQ_INSERT_TAIL(&args->pa_events, ev_clone, ev_next); + } +} Property changes on: head/lib/libpmcstat/libpmcstat_event.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_image.c =================================================================== --- head/lib/libpmcstat/libpmcstat_image.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_image.c (revision 324959) @@ -0,0 +1,517 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libpmcstat.h" + +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + +/* + * Add the list of symbols in the given section to the list associated + * with the object. + */ +void +pmcstat_image_add_symbols(struct pmcstat_image *image, Elf *e, + Elf_Scn *scn, GElf_Shdr *sh) +{ + int firsttime; + size_t n, newsyms, nshsyms, nfuncsyms; + struct pmcstat_symbol *symptr; + char *fnname; + GElf_Sym sym; + Elf_Data *data; + + if ((data = elf_getdata(scn, NULL)) == NULL) + return; + + /* + * Determine the number of functions named in this + * section. + */ + + nshsyms = sh->sh_size / sh->sh_entsize; + for (n = nfuncsyms = 0; n < nshsyms; n++) { + if (gelf_getsym(data, (int) n, &sym) != &sym) + return; + if (GELF_ST_TYPE(sym.st_info) == STT_FUNC) + nfuncsyms++; + } + + if (nfuncsyms == 0) + return; + + /* + * Allocate space for the new entries. + */ + firsttime = image->pi_symbols == NULL; + symptr = reallocarray(image->pi_symbols, + image->pi_symcount + nfuncsyms, sizeof(*symptr)); + if (symptr == image->pi_symbols) /* realloc() failed. */ + return; + image->pi_symbols = symptr; + + /* + * Append new symbols to the end of the current table. + */ + symptr += image->pi_symcount; + + for (n = newsyms = 0; n < nshsyms; n++) { + if (gelf_getsym(data, (int) n, &sym) != &sym) + return; + if (GELF_ST_TYPE(sym.st_info) != STT_FUNC) + continue; + + if (sym.st_shndx == STN_UNDEF) + continue; + + if (!firsttime && pmcstat_symbol_search(image, sym.st_value)) + continue; /* We've seen this symbol already. */ + + if ((fnname = elf_strptr(e, sh->sh_link, sym.st_name)) + == NULL) + continue; +#ifdef __arm__ + /* Remove spurious ARM function name. */ + if (fnname[0] == '$' && + (fnname[1] == 'a' || fnname[1] == 't' || + fnname[1] == 'd') && + fnname[2] == '\0') + continue; +#endif + + symptr->ps_name = pmcstat_string_intern(fnname); + symptr->ps_start = sym.st_value - image->pi_vaddr; + symptr->ps_end = symptr->ps_start + sym.st_size; + + symptr++; + newsyms++; + } + + image->pi_symcount += newsyms; + if (image->pi_symcount == 0) + return; + + assert(newsyms <= nfuncsyms); + + /* + * Return space to the system if there were duplicates. + */ + if (newsyms < nfuncsyms) + image->pi_symbols = reallocarray(image->pi_symbols, + image->pi_symcount, sizeof(*symptr)); + + /* + * Keep the list of symbols sorted. + */ + qsort(image->pi_symbols, image->pi_symcount, sizeof(*symptr), + pmcstat_symbol_compare); + + /* + * Deal with function symbols that have a size of 'zero' by + * making them extend to the next higher address. These + * symbols are usually defined in assembly code. + */ + for (symptr = image->pi_symbols; + symptr < image->pi_symbols + (image->pi_symcount - 1); + symptr++) + if (symptr->ps_start == symptr->ps_end) + symptr->ps_end = (symptr+1)->ps_start; +} + +/* + * Record the fact that PC values from 'start' to 'end' come from + * image 'image'. + */ + +void +pmcstat_image_link(struct pmcstat_process *pp, struct pmcstat_image *image, + uintfptr_t start) +{ + struct pmcstat_pcmap *pcm, *pcmnew; + uintfptr_t offset; + + assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN && + image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE); + + if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) + err(EX_OSERR, "ERROR: Cannot create a map entry"); + + /* + * Adjust the map entry to only cover the text portion + * of the object. + */ + + offset = start - image->pi_vaddr; + pcmnew->ppm_lowpc = image->pi_start + offset; + pcmnew->ppm_highpc = image->pi_end + offset; + pcmnew->ppm_image = image; + + assert(pcmnew->ppm_lowpc < pcmnew->ppm_highpc); + + /* Overlapped mmap()'s are assumed to never occur. */ + TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) + if (pcm->ppm_lowpc >= pcmnew->ppm_highpc) + break; + + if (pcm == NULL) + TAILQ_INSERT_TAIL(&pp->pp_map, pcmnew, ppm_next); + else + TAILQ_INSERT_BEFORE(pcm, pcmnew, ppm_next); +} + +/* + * Determine whether a given executable image is an A.OUT object, and + * if so, fill in its parameters from the text file. + * Sets image->pi_type. + */ + +void +pmcstat_image_get_aout_params(struct pmcstat_image *image, + struct pmcstat_args *args) +{ + int fd; + ssize_t nbytes; + struct exec ex; + const char *path; + char buffer[PATH_MAX]; + + path = pmcstat_string_unintern(image->pi_execpath); + assert(path != NULL); + + if (image->pi_iskernelmodule) + errx(EX_SOFTWARE, + "ERROR: a.out kernel modules are unsupported \"%s\"", path); + + (void) snprintf(buffer, sizeof(buffer), "%s%s", + args->pa_fsroot, path); + + if ((fd = open(buffer, O_RDONLY, 0)) < 0 || + (nbytes = read(fd, &ex, sizeof(ex))) < 0) { + if (args->pa_verbosity >= 2) + warn("WARNING: Cannot determine type of \"%s\"", + path); + image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; + if (fd != -1) + (void) close(fd); + return; + } + + (void) close(fd); + + if ((unsigned) nbytes != sizeof(ex) || + N_BADMAG(ex)) + return; + + image->pi_type = PMCSTAT_IMAGE_AOUT; + + /* TODO: the rest of a.out processing */ + + return; +} + +/* + * Examine an ELF file to determine the size of its text segment. + * Sets image->pi_type if anything conclusive can be determined about + * this image. + */ + +void +pmcstat_image_get_elf_params(struct pmcstat_image *image, + struct pmcstat_args *args) +{ + int fd; + size_t i, nph, nsh; + const char *path, *elfbase; + char *p, *endp; + uintfptr_t minva, maxva; + Elf *e; + Elf_Scn *scn; + GElf_Ehdr eh; + GElf_Phdr ph; + GElf_Shdr sh; + enum pmcstat_image_type image_type; + char buffer[PATH_MAX]; + + assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); + + image->pi_start = minva = ~(uintfptr_t) 0; + image->pi_end = maxva = (uintfptr_t) 0; + image->pi_type = image_type = PMCSTAT_IMAGE_INDETERMINABLE; + image->pi_isdynamic = 0; + image->pi_dynlinkerpath = NULL; + image->pi_vaddr = 0; + + path = pmcstat_string_unintern(image->pi_execpath); + assert(path != NULL); + + /* + * Look for kernel modules under FSROOT/KERNELPATH/NAME, + * and user mode executable objects under FSROOT/PATHNAME. + */ + if (image->pi_iskernelmodule) + (void) snprintf(buffer, sizeof(buffer), "%s%s/%s", + args->pa_fsroot, args->pa_kernel, path); + else + (void) snprintf(buffer, sizeof(buffer), "%s%s", + args->pa_fsroot, path); + + e = NULL; + if ((fd = open(buffer, O_RDONLY, 0)) < 0) { + warnx("WARNING: Cannot open \"%s\".", + buffer); + goto done; + } + + if (elf_version(EV_CURRENT) == EV_NONE) { + warnx("WARNING: failed to init elf\n"); + goto done; + } + + if ((e = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { + warnx("WARNING: Cannot read \"%s\".", + buffer); + goto done; + } + + if (elf_kind(e) != ELF_K_ELF) { + if (args->pa_verbosity >= 2) + warnx("WARNING: Cannot determine the type of \"%s\".", + buffer); + goto done; + } + + if (gelf_getehdr(e, &eh) != &eh) { + warnx( + "WARNING: Cannot retrieve the ELF Header for \"%s\": %s.", + buffer, elf_errmsg(-1)); + goto done; + } + + if (eh.e_type != ET_EXEC && eh.e_type != ET_DYN && + !(image->pi_iskernelmodule && eh.e_type == ET_REL)) { + warnx("WARNING: \"%s\" is of an unsupported ELF type.", + buffer); + goto done; + } + + image_type = eh.e_ident[EI_CLASS] == ELFCLASS32 ? + PMCSTAT_IMAGE_ELF32 : PMCSTAT_IMAGE_ELF64; + + /* + * Determine the virtual address where an executable would be + * loaded. Additionally, for dynamically linked executables, + * save the pathname to the runtime linker. + */ + if (eh.e_type == ET_EXEC) { + if (elf_getphnum(e, &nph) == 0) { + warnx( +"WARNING: Could not determine the number of program headers in \"%s\": %s.", + buffer, + elf_errmsg(-1)); + goto done; + } + for (i = 0; i < eh.e_phnum; i++) { + if (gelf_getphdr(e, i, &ph) != &ph) { + warnx( +"WARNING: Retrieval of PHDR entry #%ju in \"%s\" failed: %s.", + (uintmax_t) i, buffer, elf_errmsg(-1)); + goto done; + } + switch (ph.p_type) { + case PT_DYNAMIC: + image->pi_isdynamic = 1; + break; + case PT_INTERP: + if ((elfbase = elf_rawfile(e, NULL)) == NULL) { + warnx( +"WARNING: Cannot retrieve the interpreter for \"%s\": %s.", + buffer, elf_errmsg(-1)); + goto done; + } + image->pi_dynlinkerpath = + pmcstat_string_intern(elfbase + + ph.p_offset); + break; + case PT_LOAD: + if ((ph.p_flags & PF_X) != 0 && + (ph.p_offset & (-ph.p_align)) == 0) + image->pi_vaddr = ph.p_vaddr & (-ph.p_align); + break; + } + } + } + + /* + * Get the min and max VA associated with this ELF object. + */ + if (elf_getshnum(e, &nsh) == 0) { + warnx( +"WARNING: Could not determine the number of sections for \"%s\": %s.", + buffer, elf_errmsg(-1)); + goto done; + } + + for (i = 0; i < nsh; i++) { + if ((scn = elf_getscn(e, i)) == NULL || + gelf_getshdr(scn, &sh) != &sh) { + warnx( +"WARNING: Could not retrieve section header #%ju in \"%s\": %s.", + (uintmax_t) i, buffer, elf_errmsg(-1)); + goto done; + } + if (sh.sh_flags & SHF_EXECINSTR) { + minva = min(minva, sh.sh_addr); + maxva = max(maxva, sh.sh_addr + sh.sh_size); + } + if (sh.sh_type == SHT_SYMTAB || sh.sh_type == SHT_DYNSYM) + pmcstat_image_add_symbols(image, e, scn, &sh); + } + + image->pi_start = minva; + image->pi_end = maxva; + image->pi_type = image_type; + image->pi_fullpath = pmcstat_string_intern(buffer); + + /* Build display name + */ + endp = buffer; + for (p = buffer; *p; p++) + if (*p == '/') + endp = p+1; + image->pi_name = pmcstat_string_intern(endp); + + done: + (void) elf_end(e); + if (fd >= 0) + (void) close(fd); + return; +} + +/* + * Given an image descriptor, determine whether it is an ELF, or AOUT. + * If no handler claims the image, set its type to 'INDETERMINABLE'. + */ + +void +pmcstat_image_determine_type(struct pmcstat_image *image, + struct pmcstat_args *args) +{ + assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); + + /* Try each kind of handler in turn */ + if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) + pmcstat_image_get_elf_params(image, args); + if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) + pmcstat_image_get_aout_params(image, args); + + /* + * Otherwise, remember that we tried to determine + * the object's type and had failed. + */ + if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) + image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; +} + +/* + * Locate an image descriptor given an interned path, adding a fresh + * descriptor to the cache if necessary. This function also finds a + * suitable name for this image's sample file. + * + * We defer filling in the file format specific parts of the image + * structure till the time we actually see a sample that would fall + * into this image. + */ + +struct pmcstat_image * +pmcstat_image_from_path(pmcstat_interned_string internedpath, + int iskernelmodule, struct pmcstat_args *args, + struct pmc_plugins *plugins) +{ + int hash; + struct pmcstat_image *pi; + + hash = pmcstat_string_lookup_hash(internedpath); + + /* First, look for an existing entry. */ + LIST_FOREACH(pi, &pmcstat_image_hash[hash], pi_next) + if (pi->pi_execpath == internedpath && + pi->pi_iskernelmodule == iskernelmodule) + return (pi); + + /* + * Allocate a new entry and place it at the head of the hash + * and LRU lists. + */ + pi = malloc(sizeof(*pi)); + if (pi == NULL) + return (NULL); + + pi->pi_type = PMCSTAT_IMAGE_UNKNOWN; + pi->pi_execpath = internedpath; + pi->pi_start = ~0; + pi->pi_end = 0; + pi->pi_entry = 0; + pi->pi_vaddr = 0; + pi->pi_isdynamic = 0; + pi->pi_iskernelmodule = iskernelmodule; + pi->pi_dynlinkerpath = NULL; + pi->pi_symbols = NULL; + pi->pi_symcount = 0; + pi->pi_addr2line = NULL; + + if (plugins[args->pa_pplugin].pl_initimage != NULL) + plugins[args->pa_pplugin].pl_initimage(pi); + if (plugins[args->pa_plugin].pl_initimage != NULL) + plugins[args->pa_plugin].pl_initimage(pi); + + LIST_INSERT_HEAD(&pmcstat_image_hash[hash], pi, pi_next); + + return (pi); +} Property changes on: head/lib/libpmcstat/libpmcstat_image.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_logging.c =================================================================== --- head/lib/libpmcstat/libpmcstat_logging.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_logging.c (revision 324959) @@ -0,0 +1,718 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libpmcstat.h" + +/* + * Get PMC record by id, apply merge policy. + */ + +static struct pmcstat_pmcrecord * +pmcstat_lookup_pmcid(pmc_id_t pmcid, int pmcstat_mergepmc) +{ + struct pmcstat_pmcrecord *pr; + + LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) { + if (pr->pr_pmcid == pmcid) { + if (pmcstat_mergepmc) + return pr->pr_merge; + return pr; + } + } + + return NULL; +} + +/* + * Add a {pmcid,name} mapping. + */ + +static void +pmcstat_pmcid_add(pmc_id_t pmcid, pmcstat_interned_string ps, + struct pmcstat_args *args, struct pmc_plugins *plugins, + int *pmcstat_npmcs) +{ + struct pmcstat_pmcrecord *pr, *prm; + + /* Replace an existing name for the PMC. */ + prm = NULL; + LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) + if (pr->pr_pmcid == pmcid) { + pr->pr_pmcname = ps; + return; + } else if (pr->pr_pmcname == ps) + prm = pr; + + /* + * Otherwise, allocate a new descriptor and call the + * plugins hook. + */ + if ((pr = malloc(sizeof(*pr))) == NULL) + err(EX_OSERR, "ERROR: Cannot allocate pmc record"); + + pr->pr_pmcid = pmcid; + pr->pr_pmcname = ps; + pr->pr_pmcin = *pmcstat_npmcs++; + pr->pr_samples = 0; + pr->pr_dubious_frames = 0; + pr->pr_merge = prm == NULL ? pr : prm; + + LIST_INSERT_HEAD(&pmcstat_pmcs, pr, pr_next); + + if (plugins[args->pa_pplugin].pl_newpmc != NULL) + plugins[args->pa_pplugin].pl_newpmc(ps, pr); + if (plugins[args->pa_plugin].pl_newpmc != NULL) + plugins[args->pa_plugin].pl_newpmc(ps, pr); +} + +/* + * Unmap images in the range [start..end) associated with process + * 'pp'. + */ + +static void +pmcstat_image_unmap(struct pmcstat_process *pp, uintfptr_t start, + uintfptr_t end) +{ + struct pmcstat_pcmap *pcm, *pcmtmp, *pcmnew; + + assert(pp != NULL); + assert(start < end); + + /* + * Cases: + * - we could have the range completely in the middle of an + * existing pcmap; in this case we have to split the pcmap + * structure into two (i.e., generate a 'hole'). + * - we could have the range covering multiple pcmaps; these + * will have to be removed. + * - we could have either 'start' or 'end' falling in the + * middle of a pcmap; in this case shorten the entry. + */ + TAILQ_FOREACH_SAFE(pcm, &pp->pp_map, ppm_next, pcmtmp) { + assert(pcm->ppm_lowpc < pcm->ppm_highpc); + if (pcm->ppm_highpc <= start) + continue; + if (pcm->ppm_lowpc >= end) + return; + if (pcm->ppm_lowpc >= start && pcm->ppm_highpc <= end) { + /* + * The current pcmap is completely inside the + * unmapped range: remove it entirely. + */ + TAILQ_REMOVE(&pp->pp_map, pcm, ppm_next); + free(pcm); + } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc > end) { + /* + * Split this pcmap into two; curtail the + * current map to end at [start-1], and start + * the new one at [end]. + */ + if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) + err(EX_OSERR, + "ERROR: Cannot split a map entry"); + + pcmnew->ppm_image = pcm->ppm_image; + + pcmnew->ppm_lowpc = end; + pcmnew->ppm_highpc = pcm->ppm_highpc; + + pcm->ppm_highpc = start; + + TAILQ_INSERT_AFTER(&pp->pp_map, pcm, pcmnew, ppm_next); + + return; + } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc <= end) + pcm->ppm_highpc = start; + else if (pcm->ppm_lowpc >= start && pcm->ppm_highpc > end) + pcm->ppm_lowpc = end; + else + assert(0); + } +} + +/* + * Convert a hwpmc(4) log to profile information. A system-wide + * callgraph is generated if FLAG_DO_CALLGRAPHS is set. gmon.out + * files usable by gprof(1) are created if FLAG_DO_GPROF is set. + */ +int +pmcstat_analyze_log(struct pmcstat_args *args, + struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats, + struct pmcstat_process *pmcstat_kernproc, + int pmcstat_mergepmc, + int *pmcstat_npmcs, + int *ps_samples_period) +{ + uint32_t cpu, cpuflags; + uintfptr_t pc; + pid_t pid; + struct pmcstat_image *image; + struct pmcstat_process *pp, *ppnew; + struct pmcstat_pcmap *ppm, *ppmtmp; + struct pmclog_ev ev; + struct pmcstat_pmcrecord *pmcr; + pmcstat_interned_string image_path; + + assert(args->pa_flags & FLAG_DO_ANALYSIS); + + if (elf_version(EV_CURRENT) == EV_NONE) + err(EX_UNAVAILABLE, "Elf library initialization failed"); + + while (pmclog_read(args->pa_logparser, &ev) == 0) { + assert(ev.pl_state == PMCLOG_OK); + + switch (ev.pl_type) { + case PMCLOG_TYPE_INITIALIZE: + if ((ev.pl_u.pl_i.pl_version & 0xFF000000) != + PMC_VERSION_MAJOR << 24 && args->pa_verbosity > 0) + warnx( +"WARNING: Log version 0x%x does not match compiled version 0x%x.", + ev.pl_u.pl_i.pl_version, PMC_VERSION_MAJOR); + break; + + case PMCLOG_TYPE_MAP_IN: + /* + * Introduce an address range mapping for a + * userland process or the kernel (pid == -1). + * + * We always allocate a process descriptor so + * that subsequent samples seen for this + * address range are mapped to the current + * object being mapped in. + */ + pid = ev.pl_u.pl_mi.pl_pid; + if (pid == -1) + pp = pmcstat_kernproc; + else + pp = pmcstat_process_lookup(pid, + PMCSTAT_ALLOCATE); + + assert(pp != NULL); + + image_path = pmcstat_string_intern(ev.pl_u.pl_mi. + pl_pathname); + image = pmcstat_image_from_path(image_path, pid == -1, + args, plugins); + if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) + pmcstat_image_determine_type(image, args); + if (image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE) + pmcstat_image_link(pp, image, + ev.pl_u.pl_mi.pl_start); + break; + + case PMCLOG_TYPE_MAP_OUT: + /* + * Remove an address map. + */ + pid = ev.pl_u.pl_mo.pl_pid; + if (pid == -1) + pp = pmcstat_kernproc; + else + pp = pmcstat_process_lookup(pid, 0); + + if (pp == NULL) /* unknown process */ + break; + + pmcstat_image_unmap(pp, ev.pl_u.pl_mo.pl_start, + ev.pl_u.pl_mo.pl_end); + break; + + case PMCLOG_TYPE_PCSAMPLE: + /* + * Note: the `PCSAMPLE' log entry is not + * generated by hpwmc(4) after version 2. + */ + + /* + * We bring in the gmon file for the image + * currently associated with the PMC & pid + * pair and increment the appropriate entry + * bin inside this. + */ + pmcstat_stats->ps_samples_total++; + *ps_samples_period += 1; + + pc = ev.pl_u.pl_s.pl_pc; + pp = pmcstat_process_lookup(ev.pl_u.pl_s.pl_pid, + PMCSTAT_ALLOCATE); + + /* Get PMC record. */ + pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_s.pl_pmcid, pmcstat_mergepmc); + assert(pmcr != NULL); + pmcr->pr_samples++; + + /* + * Call the plugins processing + * TODO: move pmcstat_process_find_map inside plugins + */ + + if (plugins[args->pa_pplugin].pl_process != NULL) + plugins[args->pa_pplugin].pl_process( + pp, pmcr, 1, &pc, + pmcstat_process_find_map(pp, pc) != NULL, 0); + plugins[args->pa_plugin].pl_process( + pp, pmcr, 1, &pc, + pmcstat_process_find_map(pp, pc) != NULL, 0); + break; + + case PMCLOG_TYPE_CALLCHAIN: + pmcstat_stats->ps_samples_total++; + *ps_samples_period += 1; + + cpuflags = ev.pl_u.pl_cc.pl_cpuflags; + cpu = PMC_CALLCHAIN_CPUFLAGS_TO_CPU(cpuflags); + + /* Filter on the CPU id. */ + if (!CPU_ISSET(cpu, &(args->pa_cpumask))) { + pmcstat_stats->ps_samples_skipped++; + break; + } + + pp = pmcstat_process_lookup(ev.pl_u.pl_cc.pl_pid, + PMCSTAT_ALLOCATE); + + /* Get PMC record. */ + pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_cc.pl_pmcid, pmcstat_mergepmc); + assert(pmcr != NULL); + pmcr->pr_samples++; + + /* + * Call the plugins processing + */ + + if (plugins[args->pa_pplugin].pl_process != NULL) + plugins[args->pa_pplugin].pl_process( + pp, pmcr, + ev.pl_u.pl_cc.pl_npc, + ev.pl_u.pl_cc.pl_pc, + PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), + cpu); + plugins[args->pa_plugin].pl_process( + pp, pmcr, + ev.pl_u.pl_cc.pl_npc, + ev.pl_u.pl_cc.pl_pc, + PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), + cpu); + break; + + case PMCLOG_TYPE_PMCALLOCATE: + /* + * Record the association pmc id between this + * PMC and its name. + */ + pmcstat_pmcid_add(ev.pl_u.pl_a.pl_pmcid, + pmcstat_string_intern(ev.pl_u.pl_a.pl_evname), + args, plugins, pmcstat_npmcs); + break; + + case PMCLOG_TYPE_PMCALLOCATEDYN: + /* + * Record the association pmc id between this + * PMC and its name. + */ + pmcstat_pmcid_add(ev.pl_u.pl_ad.pl_pmcid, + pmcstat_string_intern(ev.pl_u.pl_ad.pl_evname), + args, plugins, pmcstat_npmcs); + break; + + case PMCLOG_TYPE_PROCEXEC: + /* + * Change the executable image associated with + * a process. + */ + pp = pmcstat_process_lookup(ev.pl_u.pl_x.pl_pid, + PMCSTAT_ALLOCATE); + + /* delete the current process map */ + TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { + TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); + free(ppm); + } + + /* + * Associate this process image. + */ + image_path = pmcstat_string_intern( + ev.pl_u.pl_x.pl_pathname); + assert(image_path != NULL); + pmcstat_process_exec(pp, image_path, + ev.pl_u.pl_x.pl_entryaddr, args, + plugins, pmcstat_stats); + break; + + case PMCLOG_TYPE_PROCEXIT: + + /* + * Due to the way the log is generated, the + * last few samples corresponding to a process + * may appear in the log after the process + * exit event is recorded. Thus we keep the + * process' descriptor and associated data + * structures around, but mark the process as + * having exited. + */ + pp = pmcstat_process_lookup(ev.pl_u.pl_e.pl_pid, 0); + if (pp == NULL) + break; + pp->pp_isactive = 0; /* mark as a zombie */ + break; + + case PMCLOG_TYPE_SYSEXIT: + pp = pmcstat_process_lookup(ev.pl_u.pl_se.pl_pid, 0); + if (pp == NULL) + break; + pp->pp_isactive = 0; /* make a zombie */ + break; + + case PMCLOG_TYPE_PROCFORK: + + /* + * Allocate a process descriptor for the new + * (child) process. + */ + ppnew = + pmcstat_process_lookup(ev.pl_u.pl_f.pl_newpid, + PMCSTAT_ALLOCATE); + + /* + * If we had been tracking the parent, clone + * its address maps. + */ + pp = pmcstat_process_lookup(ev.pl_u.pl_f.pl_oldpid, 0); + if (pp == NULL) + break; + TAILQ_FOREACH(ppm, &pp->pp_map, ppm_next) + pmcstat_image_link(ppnew, ppm->ppm_image, + ppm->ppm_lowpc); + break; + + default: /* other types of entries are not relevant */ + break; + } + } + + if (ev.pl_state == PMCLOG_EOF) + return (PMCSTAT_FINISHED); + else if (ev.pl_state == PMCLOG_REQUIRE_DATA) + return (PMCSTAT_RUNNING); + + err(EX_DATAERR, + "ERROR: event parsing failed (record %jd, offset 0x%jx)", + (uintmax_t) ev.pl_count + 1, ev.pl_offset); +} + +/* + * Open a log file, for reading or writing. + * + * The function returns the fd of a successfully opened log or -1 in + * case of failure. + */ + +int +pmcstat_open_log(const char *path, int mode) +{ + int error, fd, cfd; + size_t hlen; + const char *p, *errstr; + struct addrinfo hints, *res, *res0; + char hostname[MAXHOSTNAMELEN]; + + errstr = NULL; + fd = -1; + + /* + * If 'path' is "-" then open one of stdin or stdout depending + * on the value of 'mode'. + * + * If 'path' contains a ':' and does not start with a '/' or '.', + * and is being opened for writing, treat it as a "host:port" + * specification and open a network socket. + * + * Otherwise, treat 'path' as a file name and open that. + */ + if (path[0] == '-' && path[1] == '\0') + fd = (mode == PMCSTAT_OPEN_FOR_READ) ? 0 : 1; + else if (path[0] != '/' && + path[0] != '.' && strchr(path, ':') != NULL) { + + p = strrchr(path, ':'); + hlen = p - path; + if (p == path || hlen >= sizeof(hostname)) { + errstr = strerror(EINVAL); + goto done; + } + + assert(hlen < sizeof(hostname)); + (void) strncpy(hostname, path, hlen); + hostname[hlen] = '\0'; + + (void) memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + if ((error = getaddrinfo(hostname, p+1, &hints, &res0)) != 0) { + errstr = gai_strerror(error); + goto done; + } + + fd = -1; + for (res = res0; res; res = res->ai_next) { + if ((fd = socket(res->ai_family, res->ai_socktype, + res->ai_protocol)) < 0) { + errstr = strerror(errno); + continue; + } + if (mode == PMCSTAT_OPEN_FOR_READ) { + if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) { + errstr = strerror(errno); + (void) close(fd); + fd = -1; + continue; + } + listen(fd, 1); + cfd = accept(fd, NULL, NULL); + (void) close(fd); + if (cfd < 0) { + errstr = strerror(errno); + fd = -1; + break; + } + fd = cfd; + } else { + if (connect(fd, res->ai_addr, res->ai_addrlen) < 0) { + errstr = strerror(errno); + (void) close(fd); + fd = -1; + continue; + } + } + errstr = NULL; + break; + } + freeaddrinfo(res0); + + } else if ((fd = open(path, mode == PMCSTAT_OPEN_FOR_READ ? + O_RDONLY : (O_WRONLY|O_CREAT|O_TRUNC), + S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) + errstr = strerror(errno); + + done: + if (errstr) + errx(EX_OSERR, "ERROR: Cannot open \"%s\" for %s: %s.", path, + (mode == PMCSTAT_OPEN_FOR_READ ? "reading" : "writing"), + errstr); + + return (fd); +} + +/* + * Close a logfile, after first flushing all in-module queued data. + */ + +int +pmcstat_close_log(struct pmcstat_args *args) +{ + /* If a local logfile is configured ask the kernel to stop + * and flush data. Kernel will close the file when data is flushed + * so keep the status to EXITING. + */ + if (args->pa_logfd != -1) { + if (pmc_close_logfile() < 0) + err(EX_OSERR, "ERROR: logging failed"); + } + + return (args->pa_flags & FLAG_HAS_PIPE ? PMCSTAT_EXITING : + PMCSTAT_FINISHED); +} + +/* + * Initialize module. + */ + +void +pmcstat_initialize_logging(struct pmcstat_process **pmcstat_kernproc, + struct pmcstat_args *args, struct pmc_plugins *plugins, + int *pmcstat_npmcs, int *pmcstat_mergepmc) +{ + struct pmcstat_process *pmcstat_kp; + int i; + + /* use a convenient format for 'ldd' output */ + if (setenv("LD_TRACE_LOADED_OBJECTS_FMT1","%o \"%p\" %x\n",1) != 0) + err(EX_OSERR, "ERROR: Cannot setenv"); + + /* Initialize hash tables */ + pmcstat_string_initialize(); + for (i = 0; i < PMCSTAT_NHASH; i++) { + LIST_INIT(&pmcstat_image_hash[i]); + LIST_INIT(&pmcstat_process_hash[i]); + } + + /* + * Create a fake 'process' entry for the kernel with pid -1. + * hwpmc(4) will subsequently inform us about where the kernel + * and any loaded kernel modules are mapped. + */ + if ((pmcstat_kp = pmcstat_process_lookup((pid_t) -1, + PMCSTAT_ALLOCATE)) == NULL) + err(EX_OSERR, "ERROR: Cannot initialize logging"); + + *pmcstat_kernproc = pmcstat_kp; + + /* PMC count. */ + *pmcstat_npmcs = 0; + + /* Merge PMC with same name. */ + *pmcstat_mergepmc = args->pa_mergepmc; + + /* + * Initialize plugins + */ + + if (plugins[args->pa_pplugin].pl_init != NULL) + plugins[args->pa_pplugin].pl_init(); + if (plugins[args->pa_plugin].pl_init != NULL) + plugins[args->pa_plugin].pl_init(); +} + +/* + * Shutdown module. + */ + +void +pmcstat_shutdown_logging(struct pmcstat_args *args, + struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats) +{ + struct pmcstat_image *pi, *pitmp; + struct pmcstat_process *pp, *pptmp; + struct pmcstat_pcmap *ppm, *ppmtmp; + FILE *mf; + int i; + + /* determine where to send the map file */ + mf = NULL; + if (args->pa_mapfilename != NULL) + mf = (strcmp(args->pa_mapfilename, "-") == 0) ? + args->pa_printfile : fopen(args->pa_mapfilename, "w"); + + if (mf == NULL && args->pa_flags & FLAG_DO_GPROF && + args->pa_verbosity >= 2) + mf = args->pa_printfile; + + if (mf) + (void) fprintf(mf, "MAP:\n"); + + /* + * Shutdown the plugins + */ + + if (plugins[args->pa_plugin].pl_shutdown != NULL) + plugins[args->pa_plugin].pl_shutdown(mf); + if (plugins[args->pa_pplugin].pl_shutdown != NULL) + plugins[args->pa_pplugin].pl_shutdown(mf); + + for (i = 0; i < PMCSTAT_NHASH; i++) { + LIST_FOREACH_SAFE(pi, &pmcstat_image_hash[i], pi_next, + pitmp) { + if (plugins[args->pa_plugin].pl_shutdownimage != NULL) + plugins[args->pa_plugin].pl_shutdownimage(pi); + if (plugins[args->pa_pplugin].pl_shutdownimage != NULL) + plugins[args->pa_pplugin].pl_shutdownimage(pi); + + free(pi->pi_symbols); + if (pi->pi_addr2line != NULL) + pclose(pi->pi_addr2line); + LIST_REMOVE(pi, pi_next); + free(pi); + } + + LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[i], pp_next, + pptmp) { + TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { + TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); + free(ppm); + } + LIST_REMOVE(pp, pp_next); + free(pp); + } + } + + pmcstat_string_shutdown(); + + /* + * Print errors unless -q was specified. Print all statistics + * if verbosity > 1. + */ +#define PRINT(N,V) do { \ + if (pmcstat_stats->ps_##V || args->pa_verbosity >= 2) \ + (void) fprintf(args->pa_printfile, " %-40s %d\n",\ + N, pmcstat_stats->ps_##V); \ + } while (0) + + if (args->pa_verbosity >= 1 && (args->pa_flags & FLAG_DO_ANALYSIS)) { + (void) fprintf(args->pa_printfile, "CONVERSION STATISTICS:\n"); + PRINT("#exec/a.out", exec_aout); + PRINT("#exec/elf", exec_elf); + PRINT("#exec/unknown", exec_indeterminable); + PRINT("#exec handling errors", exec_errors); + PRINT("#samples/total", samples_total); + PRINT("#samples/unclaimed", samples_unknown_offset); + PRINT("#samples/unknown-object", samples_indeterminable); + PRINT("#samples/unknown-function", samples_unknown_function); + PRINT("#callchain/dubious-frames", callchain_dubious_frames); + } + + if (mf) + (void) fclose(mf); +} Property changes on: head/lib/libpmcstat/libpmcstat_logging.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_process.c =================================================================== --- head/lib/libpmcstat/libpmcstat_process.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_process.c (revision 324959) @@ -0,0 +1,363 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libpmcstat.h" + +/* + * Associate an AOUT image with a process. + */ + +void +pmcstat_process_aout_exec(struct pmcstat_process *pp, + struct pmcstat_image *image, uintfptr_t entryaddr) +{ + (void) pp; + (void) image; + (void) entryaddr; + /* TODO Implement a.out handling */ +} + +/* + * Associate an ELF image with a process. + */ + +void +pmcstat_process_elf_exec(struct pmcstat_process *pp, + struct pmcstat_image *image, uintfptr_t entryaddr, + struct pmcstat_args *args, struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats) +{ + uintmax_t libstart; + struct pmcstat_image *rtldimage; + + assert(image->pi_type == PMCSTAT_IMAGE_ELF32 || + image->pi_type == PMCSTAT_IMAGE_ELF64); + + /* Create a map entry for the base executable. */ + pmcstat_image_link(pp, image, image->pi_vaddr); + + /* + * For dynamically linked executables we need to determine + * where the dynamic linker was mapped to for this process, + * Subsequent executable objects that are mapped in by the + * dynamic linker will be tracked by log events of type + * PMCLOG_TYPE_MAP_IN. + */ + + if (image->pi_isdynamic) { + + /* + * The runtime loader gets loaded just after the maximum + * possible heap address. Like so: + * + * [ TEXT DATA BSS HEAP -->*RTLD SHLIBS <--STACK] + * ^ ^ + * 0 VM_MAXUSER_ADDRESS + + * + * The exact address where the loader gets mapped in + * will vary according to the size of the executable + * and the limits on the size of the process'es data + * segment at the time of exec(). The entry address + * recorded at process exec time corresponds to the + * 'start' address inside the dynamic linker. From + * this we can figure out the address where the + * runtime loader's file object had been mapped to. + */ + rtldimage = pmcstat_image_from_path(image->pi_dynlinkerpath, + 0, args, plugins); + if (rtldimage == NULL) { + warnx("WARNING: Cannot find image for \"%s\".", + pmcstat_string_unintern(image->pi_dynlinkerpath)); + pmcstat_stats->ps_exec_errors++; + return; + } + + if (rtldimage->pi_type == PMCSTAT_IMAGE_UNKNOWN) + pmcstat_image_get_elf_params(rtldimage, args); + + if (rtldimage->pi_type != PMCSTAT_IMAGE_ELF32 && + rtldimage->pi_type != PMCSTAT_IMAGE_ELF64) { + warnx("WARNING: rtld not an ELF object \"%s\".", + pmcstat_string_unintern(image->pi_dynlinkerpath)); + return; + } + + libstart = entryaddr - rtldimage->pi_entry; + pmcstat_image_link(pp, rtldimage, libstart); + } +} + +/* + * Associate an image and a process. + */ + +void +pmcstat_process_exec(struct pmcstat_process *pp, + pmcstat_interned_string path, uintfptr_t entryaddr, + struct pmcstat_args *args, struct pmc_plugins *plugins, + struct pmcstat_stats *pmcstat_stats) +{ + struct pmcstat_image *image; + + if ((image = pmcstat_image_from_path(path, 0, + args, plugins)) == NULL) { + pmcstat_stats->ps_exec_errors++; + return; + } + + if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) + pmcstat_image_determine_type(image, args); + + assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN); + + switch (image->pi_type) { + case PMCSTAT_IMAGE_ELF32: + case PMCSTAT_IMAGE_ELF64: + pmcstat_stats->ps_exec_elf++; + pmcstat_process_elf_exec(pp, image, entryaddr, + args, plugins, pmcstat_stats); + break; + + case PMCSTAT_IMAGE_AOUT: + pmcstat_stats->ps_exec_aout++; + pmcstat_process_aout_exec(pp, image, entryaddr); + break; + + case PMCSTAT_IMAGE_INDETERMINABLE: + pmcstat_stats->ps_exec_indeterminable++; + break; + + default: + err(EX_SOFTWARE, + "ERROR: Unsupported executable type for \"%s\"", + pmcstat_string_unintern(path)); + } +} + +/* + * Find the map entry associated with process 'p' at PC value 'pc'. + */ + +struct pmcstat_pcmap * +pmcstat_process_find_map(struct pmcstat_process *p, uintfptr_t pc) +{ + struct pmcstat_pcmap *ppm; + + TAILQ_FOREACH(ppm, &p->pp_map, ppm_next) { + if (pc >= ppm->ppm_lowpc && pc < ppm->ppm_highpc) + return (ppm); + if (pc < ppm->ppm_lowpc) + return (NULL); + } + + return (NULL); +} + +/* + * Find the process descriptor corresponding to a PID. If 'allocate' + * is zero, we return a NULL if a pid descriptor could not be found or + * a process descriptor process. If 'allocate' is non-zero, then we + * will attempt to allocate a fresh process descriptor. Zombie + * process descriptors are only removed if a fresh allocation for the + * same PID is requested. + */ + +struct pmcstat_process * +pmcstat_process_lookup(pid_t pid, int allocate) +{ + uint32_t hash; + struct pmcstat_pcmap *ppm, *ppmtmp; + struct pmcstat_process *pp, *pptmp; + + hash = (uint32_t) pid & PMCSTAT_HASH_MASK; /* simplicity wins */ + + LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[hash], pp_next, pptmp) + if (pp->pp_pid == pid) { + /* Found a descriptor, check and process zombies */ + if (allocate && pp->pp_isactive == 0) { + /* remove maps */ + TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, + ppmtmp) { + TAILQ_REMOVE(&pp->pp_map, ppm, + ppm_next); + free(ppm); + } + /* remove process entry */ + LIST_REMOVE(pp, pp_next); + free(pp); + break; + } + return (pp); + } + + if (!allocate) + return (NULL); + + if ((pp = malloc(sizeof(*pp))) == NULL) + err(EX_OSERR, "ERROR: Cannot allocate pid descriptor"); + + pp->pp_pid = pid; + pp->pp_isactive = 1; + + TAILQ_INIT(&pp->pp_map); + + LIST_INSERT_HEAD(&pmcstat_process_hash[hash], pp, pp_next); + return (pp); +} + +void +pmcstat_create_process(int *pmcstat_sockpair, struct pmcstat_args *args, + int pmcstat_kq) +{ + char token; + pid_t pid; + struct kevent kev; + struct pmcstat_target *pt; + + if (socketpair(AF_UNIX, SOCK_STREAM, 0, pmcstat_sockpair) < 0) + err(EX_OSERR, "ERROR: cannot create socket pair"); + + switch (pid = fork()) { + case -1: + err(EX_OSERR, "ERROR: cannot fork"); + /*NOTREACHED*/ + + case 0: /* child */ + (void) close(pmcstat_sockpair[PARENTSOCKET]); + + /* Write a token to tell our parent we've started executing. */ + if (write(pmcstat_sockpair[CHILDSOCKET], "+", 1) != 1) + err(EX_OSERR, "ERROR (child): cannot write token"); + + /* Wait for our parent to signal us to start. */ + if (read(pmcstat_sockpair[CHILDSOCKET], &token, 1) < 0) + err(EX_OSERR, "ERROR (child): cannot read token"); + (void) close(pmcstat_sockpair[CHILDSOCKET]); + + /* exec() the program requested */ + execvp(*args->pa_argv, args->pa_argv); + /* and if that fails, notify the parent */ + kill(getppid(), SIGCHLD); + err(EX_OSERR, "ERROR: execvp \"%s\" failed", *args->pa_argv); + /*NOTREACHED*/ + + default: /* parent */ + (void) close(pmcstat_sockpair[CHILDSOCKET]); + break; + } + + /* Ask to be notified via a kevent when the target process exits. */ + EV_SET(&kev, pid, EVFILT_PROC, EV_ADD | EV_ONESHOT, NOTE_EXIT, 0, + NULL); + if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) + err(EX_OSERR, "ERROR: cannot monitor child process %d", pid); + + if ((pt = malloc(sizeof(*pt))) == NULL) + errx(EX_SOFTWARE, "ERROR: Out of memory."); + + pt->pt_pid = pid; + SLIST_INSERT_HEAD(&args->pa_targets, pt, pt_next); + + /* Wait for the child to signal that its ready to go. */ + if (read(pmcstat_sockpair[PARENTSOCKET], &token, 1) < 0) + err(EX_OSERR, "ERROR (parent): cannot read token"); + + return; +} + +/* + * Do process profiling + * + * If a pid was specified, attach each allocated PMC to the target + * process. Otherwise, fork a child and attach the PMCs to the child, + * and have the child exec() the target program. + */ + +void +pmcstat_start_process(int *pmcstat_sockpair) +{ + /* Signal the child to proceed. */ + if (write(pmcstat_sockpair[PARENTSOCKET], "!", 1) != 1) + err(EX_OSERR, "ERROR (parent): write of token failed"); + + (void) close(pmcstat_sockpair[PARENTSOCKET]); +} + +void +pmcstat_attach_pmcs(struct pmcstat_args *args) +{ + struct pmcstat_ev *ev; + struct pmcstat_target *pt; + int count; + + /* Attach all process PMCs to target processes. */ + count = 0; + STAILQ_FOREACH(ev, &args->pa_events, ev_next) { + if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) + continue; + SLIST_FOREACH(pt, &args->pa_targets, pt_next) { + if (pmc_attach(ev->ev_pmcid, pt->pt_pid) == 0) + count++; + else if (errno != ESRCH) + err(EX_OSERR, +"ERROR: cannot attach pmc \"%s\" to process %d", + ev->ev_name, (int)pt->pt_pid); + } + } + + if (count == 0) + errx(EX_DATAERR, "ERROR: No processes were attached to."); +} Property changes on: head/lib/libpmcstat/libpmcstat_process.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_string.c =================================================================== --- head/lib/libpmcstat/libpmcstat_string.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_string.c (revision 324959) @@ -0,0 +1,156 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libpmcstat.h" + +static LIST_HEAD(,pmcstat_string) pmcstat_string_hash[PMCSTAT_NHASH]; + +/* + * Intern a copy of string 's', and return a pointer to the + * interned structure. + */ + +pmcstat_interned_string +pmcstat_string_intern(const char *s) +{ + struct pmcstat_string *ps; + const struct pmcstat_string *cps; + int hash, len; + + if ((cps = pmcstat_string_lookup(s)) != NULL) + return (cps); + + hash = pmcstat_string_compute_hash(s); + len = strlen(s); + + if ((ps = malloc(sizeof(*ps))) == NULL) + err(EX_OSERR, "ERROR: Could not intern string"); + ps->ps_len = len; + ps->ps_hash = hash; + ps->ps_string = strdup(s); + LIST_INSERT_HEAD(&pmcstat_string_hash[hash], ps, ps_next); + return ((pmcstat_interned_string) ps); +} + +const char * +pmcstat_string_unintern(pmcstat_interned_string str) +{ + const char *s; + + s = ((const struct pmcstat_string *) str)->ps_string; + return (s); +} + +/* + * Compute a 'hash' value for a string. + */ + +int +pmcstat_string_compute_hash(const char *s) +{ + unsigned hash; + + for (hash = 2166136261; *s; s++) + hash = (hash ^ *s) * 16777619; + + return (hash & PMCSTAT_HASH_MASK); +} + +pmcstat_interned_string +pmcstat_string_lookup(const char *s) +{ + struct pmcstat_string *ps; + int hash, len; + + hash = pmcstat_string_compute_hash(s); + len = strlen(s); + + LIST_FOREACH(ps, &pmcstat_string_hash[hash], ps_next) + if (ps->ps_len == len && ps->ps_hash == hash && + strcmp(ps->ps_string, s) == 0) + return (ps); + return (NULL); +} + +int +pmcstat_string_lookup_hash(pmcstat_interned_string s) +{ + const struct pmcstat_string *ps; + + ps = (const struct pmcstat_string *) s; + return (ps->ps_hash); +} + +/* + * Destroy the string table, free'ing up space. + */ + +void +pmcstat_string_shutdown(void) +{ + int i; + struct pmcstat_string *ps, *pstmp; + + for (i = 0; i < PMCSTAT_NHASH; i++) + LIST_FOREACH_SAFE(ps, &pmcstat_string_hash[i], ps_next, + pstmp) { + LIST_REMOVE(ps, ps_next); + free(ps->ps_string); + free(ps); + } +} + +/* + * Initialize the string interning facility. + */ + +void +pmcstat_string_initialize(void) +{ + int i; + + for (i = 0; i < PMCSTAT_NHASH; i++) + LIST_INIT(&pmcstat_string_hash[i]); +} Property changes on: head/lib/libpmcstat/libpmcstat_string.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/lib/libpmcstat/libpmcstat_symbol.c =================================================================== --- head/lib/libpmcstat/libpmcstat_symbol.c (nonexistent) +++ head/lib/libpmcstat/libpmcstat_symbol.c (revision 324959) @@ -0,0 +1,148 @@ +/*- + * Copyright (c) 2003-2008 Joseph Koshy + * Copyright (c) 2017 Ruslan Bukin + * All rights reserved. + * + * This software was developed by BAE Systems, the University of Cambridge + * Computer Laboratory, and Memorial University under DARPA/AFRL contract + * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing + * (TC) research program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libpmcstat.h" + +struct pmcstat_symbol * +pmcstat_symbol_search_by_name(struct pmcstat_process *pp, + const char *pi_name, const char *name, uintptr_t *addr_start, + uintptr_t *addr_end) +{ + struct pmcstat_symbol *sym; + struct pmcstat_image *image; + struct pmcstat_pcmap *pcm; + const char *name1; + const char *name2; + bool found; + size_t i; + + found = 0; + + if (pp == NULL) + return (NULL); + + TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) { + image = pcm->ppm_image; + if (image->pi_name == NULL) + continue; + name1 = pmcstat_string_unintern(image->pi_name); + if (strcmp(name1, pi_name) == 0) { + found = 1; + break; + } + } + + if (!found || image->pi_symbols == NULL) + return (NULL); + + found = 0; + + for (i = 0; i < image->pi_symcount; i++) { + sym = &image->pi_symbols[i]; + name2 = pmcstat_string_unintern(sym->ps_name); + if (strcmp(name2, name) == 0) { + found = 1; + break; + } + } + + if (!found) + return (NULL); + + *addr_start = (image->pi_vaddr - image->pi_start + + pcm->ppm_lowpc + sym->ps_start); + *addr_end = (image->pi_vaddr - image->pi_start + + pcm->ppm_lowpc + sym->ps_end); + + return (sym); +} + +/* + * Helper function. + */ + +int +pmcstat_symbol_compare(const void *a, const void *b) +{ + const struct pmcstat_symbol *sym1, *sym2; + + sym1 = (const struct pmcstat_symbol *) a; + sym2 = (const struct pmcstat_symbol *) b; + + if (sym1->ps_end <= sym2->ps_start) + return (-1); + if (sym1->ps_start >= sym2->ps_end) + return (1); + return (0); +} + +/* + * Map an address to a symbol in an image. + */ + +struct pmcstat_symbol * +pmcstat_symbol_search(struct pmcstat_image *image, uintfptr_t addr) +{ + struct pmcstat_symbol sym; + + if (image->pi_symbols == NULL) + return (NULL); + + sym.ps_name = NULL; + sym.ps_start = addr; + sym.ps_end = addr + 1; + + return (bsearch((void *) &sym, image->pi_symbols, + image->pi_symcount, sizeof(struct pmcstat_symbol), + pmcstat_symbol_compare)); +} Property changes on: head/lib/libpmcstat/libpmcstat_symbol.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: head/share/mk/src.libnames.mk =================================================================== --- head/share/mk/src.libnames.mk (revision 324958) +++ head/share/mk/src.libnames.mk (revision 324959) @@ -1,582 +1,586 @@ # $FreeBSD$ # # The include file define library names suitable # for INTERNALLIB and PRIVATELIB definition .if !target(____) .error src.libnames.mk cannot be included directly. .endif .if !target(____) ____: .include _PRIVATELIBS= \ atf_c \ atf_cxx \ bsdstat \ devdctl \ event \ heimipcc \ heimipcs \ ifconfig \ ldns \ sqlite3 \ ssh \ ucl \ unbound \ zstd _INTERNALLIBS= \ amu \ bsnmptools \ cron \ elftc \ fifolog \ ipf \ lpr \ netbsd \ ntp \ ntpevent \ openbsd \ opts \ parse \ pe \ + pmcstat \ readline \ sl \ sm \ smdb \ smutil \ telnet \ vers _LIBRARIES= \ ${_PRIVATELIBS} \ ${_INTERNALLIBS} \ ${LOCAL_LIBRARIES} \ 80211 \ alias \ archive \ asn1 \ auditd \ avl \ begemot \ bluetooth \ bsdxml \ bsm \ bsnmp \ bz2 \ c \ c_pic \ calendar \ cam \ casper \ cap_dns \ cap_grp \ cap_pwd \ cap_random \ cap_sysctl \ com_err \ compiler_rt \ crypt \ crypto \ ctf \ cuse \ cxxrt \ devctl \ devdctl \ devinfo \ devstat \ dialog \ dl \ dpv \ dtrace \ dwarf \ edit \ efivar \ elf \ execinfo \ fetch \ figpar \ geom \ gnuregex \ gpio \ gssapi \ gssapi_krb5 \ hdb \ heimbase \ heimntlm \ heimsqlite \ hx509 \ ipsec \ jail \ kadm5clnt \ kadm5srv \ kafs5 \ kdc \ kiconv \ krb5 \ kvm \ l \ lzma \ m \ magic \ md \ memstat \ mp \ mt \ nandfs \ ncurses \ ncursesw \ netgraph \ ngatm \ nv \ nvpair \ opie \ pam \ panel \ panelw \ pcap \ pcsclite \ pjdlog \ pmc \ proc \ procstat \ pthread \ radius \ readline \ roken \ rpcsec_gss \ rpcsvc \ rt \ rtld_db \ sbuf \ sdp \ sm \ smb \ ssl \ ssp_nonshared \ stdthreads \ supcplusplus \ sysdecode \ tacplus \ termcap \ termcapw \ ufs \ ugidfw \ ulog \ umem \ usb \ usbhid \ util \ uutil \ vmmapi \ wind \ wrap \ xo \ y \ ypclnt \ z \ zfs_core \ zfs \ zpool \ .if ${MK_BLACKLIST} != "no" _LIBRARIES+= \ blacklist \ .endif .if ${MK_OFED} != "no" _LIBRARIES+= \ cxgb4 \ ibcm \ ibcommon \ ibmad \ ibsdp \ ibumad \ ibverbs \ mlx4 \ mthca \ opensm \ osmcomp \ osmvendor \ rdmacm \ .endif # Each library's LIBADD needs to be duplicated here for static linkage of # 2nd+ order consumers. Auto-generating this would be better. _DP_80211= sbuf bsdxml _DP_archive= z bz2 lzma bsdxml _DP_zstd= pthread .if ${MK_BLACKLIST} != "no" _DP_blacklist+= pthread .endif .if ${MK_OPENSSL} != "no" _DP_archive+= crypto .else _DP_archive+= md .endif _DP_sqlite3= pthread _DP_ssl= crypto _DP_ssh= crypto crypt z .if ${MK_LDNS} != "no" _DP_ssh+= ldns .endif _DP_edit= ncursesw .if ${MK_OPENSSL} != "no" _DP_bsnmp= crypto .endif _DP_geom= bsdxml sbuf _DP_cam= sbuf _DP_kvm= elf _DP_casper= nv _DP_cap_dns= nv _DP_cap_grp= nv _DP_cap_pwd= nv _DP_cap_random= nv _DP_cap_sysctl= nv _DP_pjdlog= util _DP_opie= md _DP_usb= pthread _DP_unbound= ssl crypto pthread _DP_rt= pthread .if ${MK_OPENSSL} == "no" _DP_radius= md .else _DP_radius= crypto .endif _DP_rtld_db= elf procstat _DP_procstat= kvm util elf .if ${MK_CXX} == "yes" .if ${MK_LIBCPLUSPLUS} != "no" _DP_proc= cxxrt .else _DP_proc= supcplusplus .endif .endif .if ${MK_CDDL} != "no" _DP_proc+= ctf .endif _DP_proc+= elf procstat rtld_db util _DP_mp= crypto _DP_memstat= kvm _DP_magic= z _DP_mt= sbuf bsdxml _DP_ldns= crypto .if ${MK_OPENSSL} != "no" _DP_fetch= ssl crypto .else _DP_fetch= md .endif _DP_execinfo= elf _DP_dwarf= elf _DP_dpv= dialog figpar util ncursesw _DP_dialog= ncursesw m _DP_cuse= pthread _DP_atf_cxx= atf_c _DP_devstat= kvm _DP_pam= radius tacplus opie md util .if ${MK_KERBEROS} != "no" _DP_pam+= krb5 .endif .if ${MK_OPENSSH} != "no" _DP_pam+= ssh .endif .if ${MK_NIS} != "no" _DP_pam+= ypclnt .endif _DP_readline= ncursesw _DP_roken= crypt _DP_kadm5clnt= com_err krb5 roken _DP_kadm5srv= com_err hdb krb5 roken _DP_heimntlm= crypto com_err krb5 roken _DP_hx509= asn1 com_err crypto roken wind _DP_hdb= asn1 com_err krb5 roken sqlite3 _DP_asn1= com_err roken _DP_kdc= roken hdb hx509 krb5 heimntlm asn1 crypto _DP_wind= com_err roken _DP_heimbase= pthread _DP_heimipcc= heimbase roken pthread _DP_heimipcs= heimbase roken pthread _DP_kafs5= asn1 krb5 roken _DP_krb5+= asn1 com_err crypt crypto hx509 roken wind heimbase heimipcc _DP_gssapi_krb5+= gssapi krb5 crypto roken asn1 com_err _DP_lzma= pthread _DP_ucl= m _DP_vmmapi= util _DP_ctf= z _DP_dtrace= ctf elf proc pthread rtld_db _DP_xo= util # The libc dependencies are not strictly needed but are defined to make the # assert happy. _DP_c= compiler_rt .if ${MK_SSP} != "no" _DP_c+= ssp_nonshared .endif _DP_stdthreads= pthread _DP_tacplus= md _DP_panel= ncurses _DP_panelw= ncursesw _DP_rpcsec_gss= gssapi _DP_smb= kiconv _DP_ulog= md _DP_fifolog= z _DP_ipf= kvm _DP_zfs= md pthread umem util uutil m nvpair avl bsdxml geom nvpair z \ zfs_core _DP_zfs_core= nvpair _DP_zpool= md pthread z nvpair avl umem .if ${MK_OFED} != "no" _DP_cxgb4= ibverbs pthread _DP_ibcm= ibverbs _DP_ibmad= ibcommon ibumad _DP_ibumad= ibcommon _DP_mlx4= ibverbs pthread _DP_mthca= ibverbs pthread _DP_opensm= pthread _DP_osmcomp= pthread _DP_osmvendor= ibumad opensm osmcomp pthread _DP_rdmacm= ibverbs .endif # Define special cases LDADD_supcplusplus= -lsupc++ LIBATF_C= ${LIBDESTDIR}${LIBDIR_BASE}/libprivateatf-c.a LIBATF_CXX= ${LIBDESTDIR}${LIBDIR_BASE}/libprivateatf-c++.a LDADD_atf_c= -lprivateatf-c LDADD_atf_cxx= -lprivateatf-c++ .for _l in ${_PRIVATELIBS} LIB${_l:tu}?= ${LIBDESTDIR}${LIBDIR_BASE}/libprivate${_l}.a .endfor .for _l in ${_LIBRARIES} .if ${_INTERNALLIBS:M${_l}} LDADD_${_l}_L+= -L${LIB${_l:tu}DIR} .endif DPADD_${_l}?= ${LIB${_l:tu}} .if ${_PRIVATELIBS:M${_l}} LDADD_${_l}?= -lprivate${_l} .else LDADD_${_l}?= ${LDADD_${_l}_L} -l${_l} .endif # Add in all dependencies for static linkage. .if defined(_DP_${_l}) && (${_INTERNALLIBS:M${_l}} || \ (defined(NO_SHARED) && (${NO_SHARED} != "no" && ${NO_SHARED} != "NO"))) .for _d in ${_DP_${_l}} DPADD_${_l}+= ${DPADD_${_d}} LDADD_${_l}+= ${LDADD_${_d}} .endfor .endif .endfor # These are special cases where the library is broken and anything that uses # it needs to add more dependencies. Broken usually means that it has a # cyclic dependency and cannot link its own dependencies. This is bad, please # fix the library instead. # Unless the library itself is broken then the proper place to define # dependencies is _DP_* above. # libatf-c++ exposes libatf-c abi hence we need to explicit link to atf_c for # atf_cxx DPADD_atf_cxx+= ${DPADD_atf_c} LDADD_atf_cxx+= ${LDADD_atf_c} # Detect LDADD/DPADD that should be LIBADD, before modifying LDADD here. _BADLDADD= .for _l in ${LDADD:M-l*:N-l*/*:C,^-l,,} .if ${_LIBRARIES:M${_l}} && !${_PRIVATELIBS:M${_l}} _BADLDADD+= ${_l} .endif .endfor .if !empty(_BADLDADD) .error ${.CURDIR}: These libraries should be LIBADD+=foo rather than DPADD/LDADD+=-lfoo: ${_BADLDADD} .endif .for _l in ${LIBADD} DPADD+= ${DPADD_${_l}} LDADD+= ${LDADD_${_l}} .endfor # INTERNALLIB definitions. LIBELFTCDIR= ${OBJTOP}/lib/libelftc LIBELFTC?= ${LIBELFTCDIR}/libelftc.a LIBPEDIR= ${OBJTOP}/lib/libpe LIBPE?= ${LIBPEDIR}/libpe.a LIBREADLINEDIR= ${OBJTOP}/gnu/lib/libreadline/readline LIBREADLINE?= ${LIBREADLINEDIR}/libreadline.a LIBOPENBSDDIR= ${OBJTOP}/lib/libopenbsd LIBOPENBSD?= ${LIBOPENBSDDIR}/libopenbsd.a LIBSMDIR= ${OBJTOP}/lib/libsm LIBSM?= ${LIBSMDIR}/libsm.a LIBSMDBDIR= ${OBJTOP}/lib/libsmdb LIBSMDB?= ${LIBSMDBDIR}/libsmdb.a LIBSMUTILDIR= ${OBJTOP}/lib/libsmutil LIBSMUTIL?= ${LIBSMUTILDIR}/libsmutil.a LIBNETBSDDIR?= ${OBJTOP}/lib/libnetbsd LIBNETBSD?= ${LIBNETBSDDIR}/libnetbsd.a LIBVERSDIR?= ${OBJTOP}/kerberos5/lib/libvers LIBVERS?= ${LIBVERSDIR}/libvers.a LIBSLDIR= ${OBJTOP}/kerberos5/lib/libsl LIBSL?= ${LIBSLDIR}/libsl.a LIBIPFDIR= ${OBJTOP}/sbin/ipf/libipf LIBIPF?= ${LIBIPFDIR}/libipf.a LIBTELNETDIR= ${OBJTOP}/lib/libtelnet LIBTELNET?= ${LIBTELNETDIR}/libtelnet.a LIBCRONDIR= ${OBJTOP}/usr.sbin/cron/lib LIBCRON?= ${LIBCRONDIR}/libcron.a LIBNTPDIR= ${OBJTOP}/usr.sbin/ntp/libntp LIBNTP?= ${LIBNTPDIR}/libntp.a LIBNTPEVENTDIR= ${OBJTOP}/usr.sbin/ntp/libntpevent LIBNTPEVENT?= ${LIBNTPEVENTDIR}/libntpevent.a LIBOPTSDIR= ${OBJTOP}/usr.sbin/ntp/libopts LIBOPTS?= ${LIBOPTSDIR}/libopts.a LIBPARSEDIR= ${OBJTOP}/usr.sbin/ntp/libparse LIBPARSE?= ${LIBPARSEDIR}/libparse.a LIBLPRDIR= ${OBJTOP}/usr.sbin/lpr/common_source LIBLPR?= ${LIBLPRDIR}/liblpr.a LIBFIFOLOGDIR= ${OBJTOP}/usr.sbin/fifolog/lib LIBFIFOLOG?= ${LIBFIFOLOGDIR}/libfifolog.a LIBBSNMPTOOLSDIR= ${OBJTOP}/usr.sbin/bsnmpd/tools/libbsnmptools LIBBSNMPTOOLS?= ${LIBBSNMPTOOLSDIR}/libbsnmptools.a LIBAMUDIR= ${OBJTOP}/usr.sbin/amd/libamu LIBAMU?= ${LIBAMUDIR}/libamu.a + +LIBPMCSTATDIR= ${OBJTOP}/lib/libpmcstat +LIBPMCSTAT?= ${LIBPMCSTATDIR}/libpmcstat.a # Define a directory for each library. This is useful for adding -L in when # not using a --sysroot or for meta mode bootstrapping when there is no # Makefile.depend. These are sorted by directory. LIBAVLDIR= ${OBJTOP}/cddl/lib/libavl LIBCTFDIR= ${OBJTOP}/cddl/lib/libctf LIBDTRACEDIR= ${OBJTOP}/cddl/lib/libdtrace LIBNVPAIRDIR= ${OBJTOP}/cddl/lib/libnvpair LIBUMEMDIR= ${OBJTOP}/cddl/lib/libumem LIBUUTILDIR= ${OBJTOP}/cddl/lib/libuutil LIBZFSDIR= ${OBJTOP}/cddl/lib/libzfs LIBZFS_COREDIR= ${OBJTOP}/cddl/lib/libzfs_core LIBZPOOLDIR= ${OBJTOP}/cddl/lib/libzpool LIBCXGB4DIR= ${OBJTOP}/contrib/ofed/usr.lib/libcxgb4 LIBIBCMDIR= ${OBJTOP}/contrib/ofed/usr.lib/libibcm LIBIBCOMMONDIR= ${OBJTOP}/contrib/ofed/usr.lib/libibcommon LIBIBMADDIR= ${OBJTOP}/contrib/ofed/usr.lib/libibmad LIBIBUMADDIR= ${OBJTOP}/contrib/ofed/usr.lib/libibumad LIBIBVERBSDIR= ${OBJTOP}/contrib/ofed/usr.lib/libibverbs LIBMLX4DIR= ${OBJTOP}/contrib/ofed/usr.lib/libmlx4 LIBMTHCADIR= ${OBJTOP}/contrib/ofed/usr.lib/libmthca LIBOPENSMDIR= ${OBJTOP}/contrib/ofed/usr.lib/libopensm LIBOSMCOMPDIR= ${OBJTOP}/contrib/ofed/usr.lib/libosmcomp LIBOSMVENDORDIR= ${OBJTOP}/contrib/ofed/usr.lib/libosmvendor LIBRDMACMDIR= ${OBJTOP}/contrib/ofed/usr.lib/librdmacm LIBIBSDPDIR= ${OBJTOP}/contrib/ofed/usr.lib/libsdp LIBDIALOGDIR= ${OBJTOP}/gnu/lib/libdialog LIBGCOVDIR= ${OBJTOP}/gnu/lib/libgcov LIBGOMPDIR= ${OBJTOP}/gnu/lib/libgomp LIBGNUREGEXDIR= ${OBJTOP}/gnu/lib/libregex LIBSSPDIR= ${OBJTOP}/gnu/lib/libssp LIBSSP_NONSHAREDDIR= ${OBJTOP}/gnu/lib/libssp/libssp_nonshared LIBSUPCPLUSPLUSDIR= ${OBJTOP}/gnu/lib/libsupc++ LIBASN1DIR= ${OBJTOP}/kerberos5/lib/libasn1 LIBGSSAPI_KRB5DIR= ${OBJTOP}/kerberos5/lib/libgssapi_krb5 LIBGSSAPI_NTLMDIR= ${OBJTOP}/kerberos5/lib/libgssapi_ntlm LIBGSSAPI_SPNEGODIR= ${OBJTOP}/kerberos5/lib/libgssapi_spnego LIBHDBDIR= ${OBJTOP}/kerberos5/lib/libhdb LIBHEIMBASEDIR= ${OBJTOP}/kerberos5/lib/libheimbase LIBHEIMIPCCDIR= ${OBJTOP}/kerberos5/lib/libheimipcc LIBHEIMIPCSDIR= ${OBJTOP}/kerberos5/lib/libheimipcs LIBHEIMNTLMDIR= ${OBJTOP}/kerberos5/lib/libheimntlm LIBHX509DIR= ${OBJTOP}/kerberos5/lib/libhx509 LIBKADM5CLNTDIR= ${OBJTOP}/kerberos5/lib/libkadm5clnt LIBKADM5SRVDIR= ${OBJTOP}/kerberos5/lib/libkadm5srv LIBKAFS5DIR= ${OBJTOP}/kerberos5/lib/libkafs5 LIBKDCDIR= ${OBJTOP}/kerberos5/lib/libkdc LIBKRB5DIR= ${OBJTOP}/kerberos5/lib/libkrb5 LIBROKENDIR= ${OBJTOP}/kerberos5/lib/libroken LIBWINDDIR= ${OBJTOP}/kerberos5/lib/libwind LIBATF_CDIR= ${OBJTOP}/lib/atf/libatf-c LIBATF_CXXDIR= ${OBJTOP}/lib/atf/libatf-c++ LIBALIASDIR= ${OBJTOP}/lib/libalias/libalias LIBBLACKLISTDIR= ${OBJTOP}/lib/libblacklist LIBBLOCKSRUNTIMEDIR= ${OBJTOP}/lib/libblocksruntime LIBBSNMPDIR= ${OBJTOP}/lib/libbsnmp/libbsnmp LIBCASPERDIR= ${OBJTOP}/lib/libcasper/libcasper LIBCAP_DNSDIR= ${OBJTOP}/lib/libcasper/services/cap_dns LIBCAP_GRPDIR= ${OBJTOP}/lib/libcasper/services/cap_grp LIBCAP_PWDDIR= ${OBJTOP}/lib/libcasper/services/cap_pwd LIBCAP_RANDOMDIR= ${OBJTOP}/lib/libcasper/services/cap_random LIBCAP_SYSCTLDIR= ${OBJTOP}/lib/libcasper/services/cap_sysctl LIBBSDXMLDIR= ${OBJTOP}/lib/libexpat LIBKVMDIR= ${OBJTOP}/lib/libkvm LIBPTHREADDIR= ${OBJTOP}/lib/libthr LIBMDIR= ${OBJTOP}/lib/msun LIBFORMDIR= ${OBJTOP}/lib/ncurses/form LIBFORMLIBWDIR= ${OBJTOP}/lib/ncurses/formw LIBMENUDIR= ${OBJTOP}/lib/ncurses/menu LIBMENULIBWDIR= ${OBJTOP}/lib/ncurses/menuw LIBNCURSESDIR= ${OBJTOP}/lib/ncurses/ncurses LIBNCURSESWDIR= ${OBJTOP}/lib/ncurses/ncursesw LIBPANELDIR= ${OBJTOP}/lib/ncurses/panel LIBPANELWDIR= ${OBJTOP}/lib/ncurses/panelw LIBCRYPTODIR= ${OBJTOP}/secure/lib/libcrypto LIBSSHDIR= ${OBJTOP}/secure/lib/libssh LIBSSLDIR= ${OBJTOP}/secure/lib/libssl LIBTEKENDIR= ${OBJTOP}/sys/teken/libteken LIBEGACYDIR= ${OBJTOP}/tools/build LIBLNDIR= ${OBJTOP}/usr.bin/lex/lib LIBTERMCAPDIR= ${LIBNCURSESDIR} LIBTERMCAPWDIR= ${LIBNCURSESWDIR} # Default other library directories to lib/libNAME. .for lib in ${_LIBRARIES} LIB${lib:tu}DIR?= ${OBJTOP}/lib/lib${lib} .endfor # Validate that listed LIBADD are valid. .for _l in ${LIBADD} .if empty(_LIBRARIES:M${_l}) _BADLIBADD+= ${_l} .endif .endfor .if !empty(_BADLIBADD) .error ${.CURDIR}: Invalid LIBADD used which may need to be added to ${_this:T}: ${_BADLIBADD} .endif # Sanity check that libraries are defined here properly when building them. .if defined(LIB) && ${_LIBRARIES:M${LIB}} != "" .if !empty(LIBADD) && \ (!defined(_DP_${LIB}) || ${LIBADD:O:u} != ${_DP_${LIB}:O:u}) .error ${.CURDIR}: Missing or incorrect _DP_${LIB} entry in ${_this:T}. Should match LIBADD for ${LIB} ('${LIBADD}' vs '${_DP_${LIB}}') .endif # Note that OBJTOP is not yet defined here but for the purpose of the check # it is fine as it resolves to the SRC directory. .if !defined(LIB${LIB:tu}DIR) || !exists(${SRCTOP}/${LIB${LIB:tu}DIR:S,^${OBJTOP}/,,}) .error ${.CURDIR}: Missing or incorrect value for LIB${LIB:tu}DIR in ${_this:T}: ${LIB${LIB:tu}DIR:S,^${OBJTOP}/,,} .endif .if ${_INTERNALLIBS:M${LIB}} != "" && !defined(LIB${LIB:tu}) .error ${.CURDIR}: Missing value for LIB${LIB:tu} in ${_this:T}. Likely should be: LIB${LIB:tu}?= $${LIB${LIB:tu}DIR}/lib${LIB}.a .endif .endif .endif # !target(____) Index: head/usr.sbin/pmcstat/Makefile =================================================================== --- head/usr.sbin/pmcstat/Makefile (revision 324958) +++ head/usr.sbin/pmcstat/Makefile (revision 324959) @@ -1,14 +1,14 @@ # # $FreeBSD$ # PROG= pmcstat MAN= pmcstat.8 -LIBADD= elf kvm pmc m ncursesw +LIBADD= elf kvm pmc m ncursesw pmcstat SRCS= pmcstat.c pmcstat.h pmcstat_log.c \ pmcpl_callgraph.c pmcpl_gprof.c pmcpl_annotate.c \ pmcpl_annotate_cg.c pmcpl_calltree.c .include Index: head/usr.sbin/pmcstat/pmcpl_callgraph.c =================================================================== --- head/usr.sbin/pmcstat/pmcpl_callgraph.c (revision 324958) +++ head/usr.sbin/pmcstat/pmcpl_callgraph.c (revision 324959) @@ -1,687 +1,693 @@ /*- * Copyright (c) 2005-2007, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Transform a hwpmc(4) log into human readable form, and into * gprof(1) compatible profiles. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pmcstat.h" #include "pmcstat_log.h" #include "pmcstat_top.h" #include "pmcpl_callgraph.h" +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + /* Get the sample value in percent related to nsamples. */ #define PMCPL_CG_COUNTP(a) \ ((a)->pcg_count * 100.0 / nsamples) /* * The toplevel CG nodes (i.e., with rank == 0) are placed in a hash table. */ struct pmcstat_cgnode_hash_list pmcstat_cgnode_hash[PMCSTAT_NHASH]; int pmcstat_cgnode_hash_count; static pmcstat_interned_string pmcstat_previous_filename_printed; static struct pmcstat_cgnode * pmcstat_cgnode_allocate(struct pmcstat_image *image, uintfptr_t pc) { struct pmcstat_cgnode *cg; if ((cg = malloc(sizeof(*cg))) == NULL) err(EX_OSERR, "ERROR: Cannot allocate callgraph node"); cg->pcg_image = image; cg->pcg_func = pc; cg->pcg_count = 0; cg->pcg_nchildren = 0; LIST_INIT(&cg->pcg_children); return (cg); } /* * Free a node and its children. */ static void pmcstat_cgnode_free(struct pmcstat_cgnode *cg) { struct pmcstat_cgnode *cgc, *cgtmp; LIST_FOREACH_SAFE(cgc, &cg->pcg_children, pcg_sibling, cgtmp) pmcstat_cgnode_free(cgc); free(cg); } /* * Look for a callgraph node associated with pmc `pmcid' in the global * hash table that corresponds to the given `pc' value in the process * `pp'. */ static struct pmcstat_cgnode * pmcstat_cgnode_hash_lookup_pc(struct pmcstat_process *pp, pmc_id_t pmcid, uintfptr_t pc, int usermode) { struct pmcstat_pcmap *ppm; struct pmcstat_symbol *sym; struct pmcstat_image *image; struct pmcstat_cgnode *cg; struct pmcstat_cgnode_hash *h; uintfptr_t loadaddress; unsigned int i, hash; ppm = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, pc); if (ppm == NULL) return (NULL); image = ppm->ppm_image; loadaddress = ppm->ppm_lowpc + image->pi_vaddr - image->pi_start; pc -= loadaddress; /* Convert to an offset in the image. */ /* * Try determine the function at this offset. If we can't * find a function round leave the `pc' value alone. */ if ((sym = pmcstat_symbol_search(image, pc)) != NULL) pc = sym->ps_start; else pmcstat_stats.ps_samples_unknown_function++; for (hash = i = 0; i < sizeof(uintfptr_t); i++) hash += (pc >> i) & 0xFF; hash &= PMCSTAT_HASH_MASK; cg = NULL; LIST_FOREACH(h, &pmcstat_cgnode_hash[hash], pch_next) { if (h->pch_pmcid != pmcid) continue; cg = h->pch_cgnode; assert(cg != NULL); if (cg->pcg_image == image && cg->pcg_func == pc) return (cg); } /* * We haven't seen this (pmcid, pc) tuple yet, so allocate a * new callgraph node and a new hash table entry for it. */ cg = pmcstat_cgnode_allocate(image, pc); if ((h = malloc(sizeof(*h))) == NULL) err(EX_OSERR, "ERROR: Could not allocate callgraph node"); h->pch_pmcid = pmcid; h->pch_cgnode = cg; LIST_INSERT_HEAD(&pmcstat_cgnode_hash[hash], h, pch_next); pmcstat_cgnode_hash_count++; return (cg); } /* * Compare two callgraph nodes for sorting. */ static int pmcstat_cgnode_compare(const void *a, const void *b) { const struct pmcstat_cgnode *const *pcg1, *const *pcg2, *cg1, *cg2; pcg1 = (const struct pmcstat_cgnode *const *) a; cg1 = *pcg1; pcg2 = (const struct pmcstat_cgnode *const *) b; cg2 = *pcg2; /* Sort in reverse order */ if (cg1->pcg_count < cg2->pcg_count) return (1); if (cg1->pcg_count > cg2->pcg_count) return (-1); return (0); } /* * Find (allocating if a needed) a callgraph node in the given * parent with the same (image, pcoffset) pair. */ static struct pmcstat_cgnode * pmcstat_cgnode_find(struct pmcstat_cgnode *parent, struct pmcstat_image *image, uintfptr_t pcoffset) { struct pmcstat_cgnode *child; LIST_FOREACH(child, &parent->pcg_children, pcg_sibling) { if (child->pcg_image == image && child->pcg_func == pcoffset) return (child); } /* * Allocate a new structure. */ child = pmcstat_cgnode_allocate(image, pcoffset); /* * Link it into the parent. */ LIST_INSERT_HEAD(&parent->pcg_children, child, pcg_sibling); parent->pcg_nchildren++; return (child); } /* * Print one callgraph node. The output format is: * * indentation %(parent's samples) #nsamples function@object */ static void pmcstat_cgnode_print(struct pmcstat_cgnode *cg, int depth, uint32_t total) { uint32_t n; const char *space; struct pmcstat_symbol *sym; struct pmcstat_cgnode **sortbuffer, **cgn, *pcg; space = " "; if (depth > 0) (void) fprintf(args.pa_graphfile, "%*s", depth, space); if (cg->pcg_count == total) (void) fprintf(args.pa_graphfile, "100.0%% "); else (void) fprintf(args.pa_graphfile, "%05.2f%% ", 100.0 * cg->pcg_count / total); n = fprintf(args.pa_graphfile, " [%u] ", cg->pcg_count); /* #samples is a 12 character wide field. */ if (n < 12) (void) fprintf(args.pa_graphfile, "%*s", 12 - n, space); if (depth > 0) (void) fprintf(args.pa_graphfile, "%*s", depth, space); sym = pmcstat_symbol_search(cg->pcg_image, cg->pcg_func); if (sym) (void) fprintf(args.pa_graphfile, "%s", pmcstat_string_unintern(sym->ps_name)); else (void) fprintf(args.pa_graphfile, "%p", (void *) (cg->pcg_image->pi_vaddr + cg->pcg_func)); if (pmcstat_previous_filename_printed != cg->pcg_image->pi_fullpath) { pmcstat_previous_filename_printed = cg->pcg_image->pi_fullpath; (void) fprintf(args.pa_graphfile, " @ %s\n", pmcstat_string_unintern( pmcstat_previous_filename_printed)); } else (void) fprintf(args.pa_graphfile, "\n"); if (cg->pcg_nchildren == 0) return; if ((sortbuffer = (struct pmcstat_cgnode **) malloc(sizeof(struct pmcstat_cgnode *) * cg->pcg_nchildren)) == NULL) err(EX_OSERR, "ERROR: Cannot print callgraph"); cgn = sortbuffer; LIST_FOREACH(pcg, &cg->pcg_children, pcg_sibling) *cgn++ = pcg; assert(cgn - sortbuffer == (int) cg->pcg_nchildren); qsort(sortbuffer, cg->pcg_nchildren, sizeof(struct pmcstat_cgnode *), pmcstat_cgnode_compare); for (cgn = sortbuffer, n = 0; n < cg->pcg_nchildren; n++, cgn++) pmcstat_cgnode_print(*cgn, depth+1, cg->pcg_count); free(sortbuffer); } /* * Record a callchain. */ void pmcpl_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) { uintfptr_t pc, loadaddress; uint32_t n; struct pmcstat_image *image; struct pmcstat_pcmap *ppm; struct pmcstat_symbol *sym; struct pmcstat_cgnode *parent, *child; struct pmcstat_process *km; pmc_id_t pmcid; (void) cpu; /* * Find the callgraph node recorded in the global hash table * for this (pmcid, pc). */ pc = cc[0]; pmcid = pmcr->pr_pmcid; parent = pmcstat_cgnode_hash_lookup_pc(pp, pmcid, pc, usermode); if (parent == NULL) { pmcstat_stats.ps_callchain_dubious_frames++; pmcr->pr_dubious_frames++; return; } parent->pcg_count++; /* * For each return address in the call chain record, subject * to the maximum depth desired. * - Find the image associated with the sample. Stop if there * there is no valid image at that address. * - Find the function that overlaps the return address. * - If found: use the start address of the function. * If not found (say an object's symbol table is not present or * is incomplete), round down to th gprof bucket granularity. * - Convert return virtual address to an offset in the image. * - Look for a child with the same {offset,image} tuple, * inserting one if needed. * - Increment the count of occurrences of the child. */ km = pmcstat_kernproc; for (n = 1; n < (uint32_t) args.pa_graphdepth && n < nsamples; n++, parent = child) { pc = cc[n]; ppm = pmcstat_process_find_map(usermode ? pp : km, pc); if (ppm == NULL) { /* Detect full frame capture (kernel + user). */ if (!usermode) { ppm = pmcstat_process_find_map(pp, pc); if (ppm != NULL) km = pp; } } if (ppm == NULL) return; image = ppm->ppm_image; loadaddress = ppm->ppm_lowpc + image->pi_vaddr - image->pi_start; pc -= loadaddress; if ((sym = pmcstat_symbol_search(image, pc)) != NULL) pc = sym->ps_start; child = pmcstat_cgnode_find(parent, image, pc); child->pcg_count++; } } /* * Printing a callgraph for a PMC. */ static void pmcstat_callgraph_print_for_pmcid(struct pmcstat_pmcrecord *pmcr) { int n, nentries; uint32_t nsamples; pmc_id_t pmcid; struct pmcstat_cgnode **sortbuffer, **cgn; struct pmcstat_cgnode_hash *pch; /* * We pull out all callgraph nodes in the top-level hash table * with a matching PMC id. We then sort these based on the * frequency of occurrence. Each callgraph node is then * printed. */ nsamples = 0; pmcid = pmcr->pr_pmcid; if ((sortbuffer = (struct pmcstat_cgnode **) malloc(sizeof(struct pmcstat_cgnode *) * pmcstat_cgnode_hash_count)) == NULL) err(EX_OSERR, "ERROR: Cannot sort callgraph"); cgn = sortbuffer; for (n = 0; n < PMCSTAT_NHASH; n++) LIST_FOREACH(pch, &pmcstat_cgnode_hash[n], pch_next) if (pch->pch_pmcid == pmcid) { nsamples += pch->pch_cgnode->pcg_count; *cgn++ = pch->pch_cgnode; } nentries = cgn - sortbuffer; assert(nentries <= pmcstat_cgnode_hash_count); if (nentries == 0) { free(sortbuffer); return; } qsort(sortbuffer, nentries, sizeof(struct pmcstat_cgnode *), pmcstat_cgnode_compare); (void) fprintf(args.pa_graphfile, "@ %s [%u samples]\n\n", pmcstat_string_unintern(pmcr->pr_pmcname), nsamples); for (cgn = sortbuffer, n = 0; n < nentries; n++, cgn++) { pmcstat_previous_filename_printed = NULL; pmcstat_cgnode_print(*cgn, 0, nsamples); (void) fprintf(args.pa_graphfile, "\n"); } free(sortbuffer); } /* * Print out callgraphs. */ static void pmcstat_callgraph_print(void) { struct pmcstat_pmcrecord *pmcr; LIST_FOREACH(pmcr, &pmcstat_pmcs, pr_next) pmcstat_callgraph_print_for_pmcid(pmcr); } static void pmcstat_cgnode_topprint(struct pmcstat_cgnode *cg, int depth, uint32_t nsamples) { int v_attrs, vs_len, ns_len, width, len, n, nchildren; float v; char ns[30], vs[10]; struct pmcstat_symbol *sym; struct pmcstat_cgnode **sortbuffer, **cgn, *pcg; (void) depth; /* Format value. */ v = PMCPL_CG_COUNTP(cg); snprintf(vs, sizeof(vs), "%.1f", v); v_attrs = PMCSTAT_ATTRPERCENT(v); /* Format name. */ sym = pmcstat_symbol_search(cg->pcg_image, cg->pcg_func); if (sym != NULL) { snprintf(ns, sizeof(ns), "%s", pmcstat_string_unintern(sym->ps_name)); } else snprintf(ns, sizeof(ns), "%p", (void *)cg->pcg_func); PMCSTAT_ATTRON(v_attrs); PMCSTAT_PRINTW("%5.5s", vs); PMCSTAT_ATTROFF(v_attrs); PMCSTAT_PRINTW(" %-10.10s %-20.20s", pmcstat_string_unintern(cg->pcg_image->pi_name), ns); nchildren = cg->pcg_nchildren; if (nchildren == 0) { PMCSTAT_PRINTW("\n"); return; } width = pmcstat_displaywidth - 40; if ((sortbuffer = (struct pmcstat_cgnode **) malloc(sizeof(struct pmcstat_cgnode *) * nchildren)) == NULL) err(EX_OSERR, "ERROR: Cannot print callgraph"); cgn = sortbuffer; LIST_FOREACH(pcg, &cg->pcg_children, pcg_sibling) *cgn++ = pcg; assert(cgn - sortbuffer == (int)nchildren); qsort(sortbuffer, nchildren, sizeof(struct pmcstat_cgnode *), pmcstat_cgnode_compare); /* Count how many callers. */ for (cgn = sortbuffer, n = 0; n < nchildren; n++, cgn++) { pcg = *cgn; v = PMCPL_CG_COUNTP(pcg); if (v < pmcstat_threshold) break; } nchildren = n; for (cgn = sortbuffer, n = 0; n < nchildren; n++, cgn++) { pcg = *cgn; /* Format value. */ if (nchildren > 1) { v = PMCPL_CG_COUNTP(pcg); vs_len = snprintf(vs, sizeof(vs), ":%.1f", v); v_attrs = PMCSTAT_ATTRPERCENT(v); } else vs_len = 0; /* Format name. */ sym = pmcstat_symbol_search(pcg->pcg_image, pcg->pcg_func); if (sym != NULL) { ns_len = snprintf(ns, sizeof(ns), "%s", pmcstat_string_unintern(sym->ps_name)); } else ns_len = snprintf(ns, sizeof(ns), "%p", (void *)pcg->pcg_func); len = ns_len + vs_len + 1; if (width - len < 0) { PMCSTAT_PRINTW(" ..."); break; } width -= len; PMCSTAT_PRINTW(" %s", ns); if (nchildren > 1) { PMCSTAT_ATTRON(v_attrs); PMCSTAT_PRINTW("%s", vs); PMCSTAT_ATTROFF(v_attrs); } } PMCSTAT_PRINTW("\n"); free(sortbuffer); } /* * Top mode display. */ void pmcpl_cg_topdisplay(void) { int n, nentries; uint32_t nsamples; struct pmcstat_cgnode **sortbuffer, **cgn; struct pmcstat_cgnode_hash *pch; struct pmcstat_pmcrecord *pmcr; pmcr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); if (!pmcr) err(EX_SOFTWARE, "ERROR: invalid pmcindex"); /* * We pull out all callgraph nodes in the top-level hash table * with a matching PMC index. We then sort these based on the * frequency of occurrence. Each callgraph node is then * printed. */ nsamples = 0; if ((sortbuffer = (struct pmcstat_cgnode **) malloc(sizeof(struct pmcstat_cgnode *) * pmcstat_cgnode_hash_count)) == NULL) err(EX_OSERR, "ERROR: Cannot sort callgraph"); cgn = sortbuffer; for (n = 0; n < PMCSTAT_NHASH; n++) LIST_FOREACH(pch, &pmcstat_cgnode_hash[n], pch_next) if (pmcr == NULL || pch->pch_pmcid == pmcr->pr_pmcid) { nsamples += pch->pch_cgnode->pcg_count; *cgn++ = pch->pch_cgnode; } nentries = cgn - sortbuffer; assert(nentries <= pmcstat_cgnode_hash_count); if (nentries == 0) { free(sortbuffer); return; } qsort(sortbuffer, nentries, sizeof(struct pmcstat_cgnode *), pmcstat_cgnode_compare); PMCSTAT_PRINTW("%5.5s %-10.10s %-20.20s %s\n", "%SAMP", "IMAGE", "FUNCTION", "CALLERS"); nentries = min(pmcstat_displayheight - 2, nentries); for (cgn = sortbuffer, n = 0; n < nentries; n++, cgn++) { if (PMCPL_CG_COUNTP(*cgn) < pmcstat_threshold) break; pmcstat_cgnode_topprint(*cgn, 0, nsamples); } free(sortbuffer); } /* * Handle top mode keypress. */ int -pmcpl_cg_topkeypress(int c, WINDOW *w) +pmcpl_cg_topkeypress(int c, void *arg) { + WINDOW *w; + + w = (WINDOW *)arg; (void) c; (void) w; return 0; } int pmcpl_cg_init(void) { int i; pmcstat_cgnode_hash_count = 0; pmcstat_previous_filename_printed = NULL; for (i = 0; i < PMCSTAT_NHASH; i++) { LIST_INIT(&pmcstat_cgnode_hash[i]); } return (0); } void pmcpl_cg_shutdown(FILE *mf) { int i; struct pmcstat_cgnode_hash *pch, *pchtmp; (void) mf; if (args.pa_flags & FLAG_DO_CALLGRAPHS) pmcstat_callgraph_print(); /* * Free memory. */ for (i = 0; i < PMCSTAT_NHASH; i++) { LIST_FOREACH_SAFE(pch, &pmcstat_cgnode_hash[i], pch_next, pchtmp) { pmcstat_cgnode_free(pch->pch_cgnode); LIST_REMOVE(pch, pch_next); free(pch); } } } Index: head/usr.sbin/pmcstat/pmcpl_callgraph.h =================================================================== --- head/usr.sbin/pmcstat/pmcpl_callgraph.h (revision 324958) +++ head/usr.sbin/pmcstat/pmcpl_callgraph.h (revision 324959) @@ -1,67 +1,67 @@ /*- * Copyright (c) 2005-2007, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _PMCSTAT_PL_CALLGRAPH_H_ #define _PMCSTAT_PL_CALLGRAPH_H_ /* * Each call graph node is tracked by a pmcstat_cgnode struct. */ struct pmcstat_cgnode { struct pmcstat_image *pcg_image; uintfptr_t pcg_func; uint32_t pcg_count; uint32_t pcg_nchildren; LIST_ENTRY(pmcstat_cgnode) pcg_sibling; LIST_HEAD(,pmcstat_cgnode) pcg_children; }; struct pmcstat_cgnode_hash { struct pmcstat_cgnode *pch_cgnode; pmc_id_t pch_pmcid; LIST_ENTRY(pmcstat_cgnode_hash) pch_next; }; extern LIST_HEAD(pmcstat_cgnode_hash_list, pmcstat_cgnode_hash) pmcstat_cgnode_hash[PMCSTAT_NHASH]; extern int pmcstat_cgnode_hash_count; /* Function prototypes */ int pmcpl_cg_init(void); void pmcpl_cg_shutdown(FILE *mf); void pmcpl_cg_process( struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu); -int pmcpl_cg_topkeypress(int c, WINDOW *w); +int pmcpl_cg_topkeypress(int c, void *w); void pmcpl_cg_topdisplay(void); void pmcpl_cg_configure(char *opt); #endif /* _PMCSTAT_PL_CALLGRAPH_H_ */ Index: head/usr.sbin/pmcstat/pmcpl_calltree.c =================================================================== --- head/usr.sbin/pmcstat/pmcpl_calltree.c (revision 324958) +++ head/usr.sbin/pmcstat/pmcpl_calltree.c (revision 324959) @@ -1,1197 +1,1203 @@ /*- * Copyright (c) 2012, Fabien Thomas * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Process hwpmc(4) samples as calltree. * * Output file format compatible with Kcachegrind (kdesdk). * Handle top mode with a sorted tree display. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pmcstat.h" #include "pmcstat_log.h" #include "pmcstat_top.h" #include "pmcpl_calltree.h" +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + #define PMCPL_CT_GROWSIZE 4 static int pmcstat_skiplink = 0; struct pmcpl_ct_node; /* Get the sample value for PMC a. */ #define PMCPL_CT_SAMPLE(a, b) \ ((a) < (b)->npmcs ? (b)->sb[a] : 0) /* Get the sample value in percent related to rsamples. */ #define PMCPL_CT_SAMPLEP(a, b) \ (PMCPL_CT_SAMPLE(a, b) * 100.0 / rsamples->sb[a]) struct pmcpl_ct_sample { int npmcs; /* Max pmc index available. */ unsigned *sb; /* Sample buffer for 0..npmcs. */ }; struct pmcpl_ct_arc { struct pmcpl_ct_sample pcta_samples; struct pmcpl_ct_sample pcta_callid; unsigned pcta_call; struct pmcpl_ct_node *pcta_child; }; struct pmcpl_ct_instr { uintfptr_t pctf_func; struct pmcpl_ct_sample pctf_samples; }; /* * Each calltree node is tracked by a pmcpl_ct_node struct. */ struct pmcpl_ct_node { struct pmcstat_image *pct_image; uintfptr_t pct_func; struct pmcstat_symbol *pct_sym; pmcstat_interned_string pct_ifl; pmcstat_interned_string pct_ifn; struct pmcpl_ct_sample pct_samples; int pct_narc; int pct_arc_c; struct pmcpl_ct_arc *pct_arc; /* TODO: optimize for large number of items. */ int pct_ninstr; int pct_instr_c; struct pmcpl_ct_instr *pct_instr; #define PMCPL_PCT_ADDR 0 #define PMCPL_PCT_NAME 1 char pct_type; #define PMCPL_PCT_WHITE 0 #define PMCPL_PCT_GREY 1 #define PMCPL_PCT_BLACK 2 char pct_color; }; struct pmcpl_ct_node_hash { struct pmcpl_ct_node *pch_ctnode; STAILQ_ENTRY(pmcpl_ct_node_hash) pch_next; }; static struct pmcpl_ct_sample pmcpl_ct_callid; #define PMCPL_CT_MAXCOL PMC_CALLCHAIN_DEPTH_MAX #define PMCPL_CT_MAXLINE 1024 /* TODO: dynamic. */ struct pmcpl_ct_line { unsigned ln_sum; unsigned ln_index; }; static struct pmcpl_ct_line pmcpl_ct_topmax[PMCPL_CT_MAXLINE+1]; static struct pmcpl_ct_node *pmcpl_ct_topscreen[PMCPL_CT_MAXCOL+1][PMCPL_CT_MAXLINE+1]; /* * All nodes indexed by function/image name are placed in a hash table. */ static STAILQ_HEAD(,pmcpl_ct_node_hash) pmcpl_ct_node_hash[PMCSTAT_NHASH]; /* * Root node for the graph. */ static struct pmcpl_ct_node *pmcpl_ct_root; /* * Prototypes */ /* * Initialize a samples. */ static void pmcpl_ct_samples_init(struct pmcpl_ct_sample *samples) { samples->npmcs = 0; samples->sb = NULL; } /* * Free a samples. */ static void pmcpl_ct_samples_free(struct pmcpl_ct_sample *samples) { samples->npmcs = 0; free(samples->sb); samples->sb = NULL; } /* * Grow a sample block to store pmcstat_npmcs PMCs. */ static void pmcpl_ct_samples_grow(struct pmcpl_ct_sample *samples) { unsigned int npmcs; /* Enough storage. */ if (pmcstat_npmcs <= samples->npmcs) return; npmcs = samples->npmcs + max(pmcstat_npmcs - samples->npmcs, PMCPL_CT_GROWSIZE); samples->sb = reallocarray(samples->sb, npmcs, sizeof(unsigned)); if (samples->sb == NULL) errx(EX_SOFTWARE, "ERROR: out of memory"); bzero((char *)samples->sb + samples->npmcs * sizeof(unsigned), (npmcs - samples->npmcs) * sizeof(unsigned)); samples->npmcs = npmcs; } /* * Compute the sum of all root arcs. */ static void pmcpl_ct_samples_root(struct pmcpl_ct_sample *samples) { int i, pmcin; pmcpl_ct_samples_init(samples); pmcpl_ct_samples_grow(samples); for (i = 0; i < pmcpl_ct_root->pct_narc; i++) for (pmcin = 0; pmcin < pmcstat_npmcs; pmcin++) samples->sb[pmcin] += PMCPL_CT_SAMPLE(pmcin, &pmcpl_ct_root->pct_arc[i].pcta_samples); } /* * Grow the arc table. */ static void pmcpl_ct_arc_grow(int cursize, int *maxsize, struct pmcpl_ct_arc **items) { unsigned int nmaxsize; if (cursize < *maxsize) return; nmaxsize = *maxsize + max(cursize + 1 - *maxsize, PMCPL_CT_GROWSIZE); *items = reallocarray(*items, nmaxsize, sizeof(struct pmcpl_ct_arc)); if (*items == NULL) errx(EX_SOFTWARE, "ERROR: out of memory"); bzero((char *)*items + *maxsize * sizeof(struct pmcpl_ct_arc), (nmaxsize - *maxsize) * sizeof(struct pmcpl_ct_arc)); *maxsize = nmaxsize; } /* * Grow the instr table. */ static void pmcpl_ct_instr_grow(int cursize, int *maxsize, struct pmcpl_ct_instr **items) { unsigned int nmaxsize; if (cursize < *maxsize) return; nmaxsize = *maxsize + max(cursize + 1 - *maxsize, PMCPL_CT_GROWSIZE); *items = reallocarray(*items, nmaxsize, sizeof(struct pmcpl_ct_instr)); if (*items == NULL) errx(EX_SOFTWARE, "ERROR: out of memory"); bzero((char *)*items + *maxsize * sizeof(struct pmcpl_ct_instr), (nmaxsize - *maxsize) * sizeof(struct pmcpl_ct_instr)); *maxsize = nmaxsize; } /* * Add a new instruction sample to given node. */ static void pmcpl_ct_instr_add(struct pmcpl_ct_node *ct, int pmcin, uintfptr_t pc, unsigned v) { int i; struct pmcpl_ct_instr *in; for (i = 0; ipct_ninstr; i++) { if (ct->pct_instr[i].pctf_func == pc) { in = &ct->pct_instr[i]; pmcpl_ct_samples_grow(&in->pctf_samples); in->pctf_samples.sb[pmcin] += v; return; } } pmcpl_ct_instr_grow(ct->pct_ninstr, &ct->pct_instr_c, &ct->pct_instr); in = &ct->pct_instr[ct->pct_ninstr]; in->pctf_func = pc; pmcpl_ct_samples_init(&in->pctf_samples); pmcpl_ct_samples_grow(&in->pctf_samples); in->pctf_samples.sb[pmcin] = v; ct->pct_ninstr++; } /* * Allocate a new node. */ static struct pmcpl_ct_node * pmcpl_ct_node_allocate(void) { struct pmcpl_ct_node *ct; if ((ct = malloc(sizeof(*ct))) == NULL) err(EX_OSERR, "ERROR: Cannot allocate callgraph node"); pmcpl_ct_samples_init(&ct->pct_samples); ct->pct_sym = NULL; ct->pct_image = NULL; ct->pct_func = 0; ct->pct_narc = 0; ct->pct_arc_c = 0; ct->pct_arc = NULL; ct->pct_ninstr = 0; ct->pct_instr_c = 0; ct->pct_instr = NULL; ct->pct_color = PMCPL_PCT_WHITE; return (ct); } /* * Free a node. */ static void pmcpl_ct_node_free(struct pmcpl_ct_node *ct) { int i; for (i = 0; i < ct->pct_narc; i++) { pmcpl_ct_samples_free(&ct->pct_arc[i].pcta_samples); pmcpl_ct_samples_free(&ct->pct_arc[i].pcta_callid); } pmcpl_ct_samples_free(&ct->pct_samples); free(ct->pct_arc); free(ct->pct_instr); free(ct); } /* * Clear the graph tag on each node. */ static void pmcpl_ct_node_cleartag(void) { int i; struct pmcpl_ct_node_hash *pch; for (i = 0; i < PMCSTAT_NHASH; i++) STAILQ_FOREACH(pch, &pmcpl_ct_node_hash[i], pch_next) pch->pch_ctnode->pct_color = PMCPL_PCT_WHITE; pmcpl_ct_root->pct_color = PMCPL_PCT_WHITE; } /* * Print the callchain line by line with maximum cost at top. */ static int pmcpl_ct_node_dumptop(int pmcin, struct pmcpl_ct_node *ct, struct pmcpl_ct_sample *rsamples, int x, int *y) { int i, terminal; struct pmcpl_ct_arc *arc; if (ct->pct_color == PMCPL_PCT_GREY) return 0; if (x >= PMCPL_CT_MAXCOL) { pmcpl_ct_topscreen[x][*y] = NULL; return 1; } pmcpl_ct_topscreen[x][*y] = ct; /* * Check if this is a terminal node. * We need to check that some samples exist * for at least one arc for that PMC. */ terminal = 1; for (i = 0; i < ct->pct_narc; i++) { arc = &ct->pct_arc[i]; if (arc->pcta_child->pct_color != PMCPL_PCT_GREY && PMCPL_CT_SAMPLE(pmcin, &arc->pcta_samples) != 0 && PMCPL_CT_SAMPLEP(pmcin, &arc->pcta_samples) > pmcstat_threshold) { terminal = 0; break; } } if (ct->pct_narc == 0 || terminal) { pmcpl_ct_topscreen[x+1][*y] = NULL; if (*y >= PMCPL_CT_MAXLINE) return 1; *y = *y + 1; for (i=0; i < x; i++) pmcpl_ct_topscreen[i][*y] = pmcpl_ct_topscreen[i][*y - 1]; return 0; } ct->pct_color = PMCPL_PCT_GREY; for (i = 0; i < ct->pct_narc; i++) { if (PMCPL_CT_SAMPLE(pmcin, &ct->pct_arc[i].pcta_samples) == 0) continue; if (PMCPL_CT_SAMPLEP(pmcin, &ct->pct_arc[i].pcta_samples) > pmcstat_threshold) { if (pmcpl_ct_node_dumptop(pmcin, ct->pct_arc[i].pcta_child, rsamples, x+1, y)) { ct->pct_color = PMCPL_PCT_BLACK; return 1; } } } ct->pct_color = PMCPL_PCT_BLACK; return 0; } /* * Compare two top line by sum. */ static int pmcpl_ct_line_compare(const void *a, const void *b) { const struct pmcpl_ct_line *ct1, *ct2; ct1 = (const struct pmcpl_ct_line *) a; ct2 = (const struct pmcpl_ct_line *) b; /* Sort in reverse order */ if (ct1->ln_sum < ct2->ln_sum) return (1); if (ct1->ln_sum > ct2->ln_sum) return (-1); return (0); } /* * Format and display given PMC index. */ static void pmcpl_ct_node_printtop(struct pmcpl_ct_sample *rsamples, int pmcin, int maxy) { #undef TS #undef TSI #define TS(x, y) (pmcpl_ct_topscreen[x][y]) #define TSI(x, y) (pmcpl_ct_topscreen[x][pmcpl_ct_topmax[y].ln_index]) int v_attrs, ns_len, vs_len, is_len, width, indentwidth, x, y; float v; char ns[30], vs[10], is[20]; struct pmcpl_ct_node *ct; const char *space = " "; /* * Sort by line cost. */ for (y = 0; ; y++) { ct = TS(1, y); if (ct == NULL) break; pmcpl_ct_topmax[y].ln_sum = 0; pmcpl_ct_topmax[y].ln_index = y; for (x = 1; TS(x, y) != NULL; x++) { pmcpl_ct_topmax[y].ln_sum += PMCPL_CT_SAMPLE(pmcin, &TS(x, y)->pct_samples); } } qsort(pmcpl_ct_topmax, y, sizeof(pmcpl_ct_topmax[0]), pmcpl_ct_line_compare); pmcpl_ct_topmax[y].ln_index = y; for (y = 0; y < maxy; y++) { ct = TSI(1, y); if (ct == NULL) break; if (y > 0) PMCSTAT_PRINTW("\n"); /* Output sum. */ v = pmcpl_ct_topmax[y].ln_sum * 100.0 / rsamples->sb[pmcin]; snprintf(vs, sizeof(vs), "%.1f", v); v_attrs = PMCSTAT_ATTRPERCENT(v); PMCSTAT_ATTRON(v_attrs); PMCSTAT_PRINTW("%5.5s ", vs); PMCSTAT_ATTROFF(v_attrs); width = indentwidth = 5 + 1; for (x = 1; (ct = TSI(x, y)) != NULL; x++) { vs[0] = '\0'; vs_len = 0; is[0] = '\0'; is_len = 0; /* Format value. */ v = PMCPL_CT_SAMPLEP(pmcin, &ct->pct_samples); if (v > pmcstat_threshold) vs_len = snprintf(vs, sizeof(vs), "(%.1f%%)", v); v_attrs = PMCSTAT_ATTRPERCENT(v); if (pmcstat_skiplink && v <= pmcstat_threshold) { strlcpy(ns, ".", sizeof(ns)); ns_len = 1; } else { if (ct->pct_sym != NULL) { ns_len = snprintf(ns, sizeof(ns), "%s", pmcstat_string_unintern(ct->pct_sym->ps_name)); } else ns_len = snprintf(ns, sizeof(ns), "%p", (void *)ct->pct_func); /* Format image. */ if (x == 1 || TSI(x-1, y)->pct_image != ct->pct_image) is_len = snprintf(is, sizeof(is), "@%s", pmcstat_string_unintern(ct->pct_image->pi_name)); /* Check for line wrap. */ width += ns_len + is_len + vs_len + 1; } if (width >= pmcstat_displaywidth) { maxy--; if (y >= maxy) break; PMCSTAT_PRINTW("\n%*s", indentwidth, space); width = indentwidth + ns_len + is_len + vs_len; } PMCSTAT_ATTRON(v_attrs); PMCSTAT_PRINTW("%s%s%s ", ns, is, vs); PMCSTAT_ATTROFF(v_attrs); } } } /* * Output top mode snapshot. */ void pmcpl_ct_topdisplay(void) { int y; struct pmcpl_ct_sample r, *rsamples; rsamples = &r; pmcpl_ct_samples_root(rsamples); pmcpl_ct_node_cleartag(); PMCSTAT_PRINTW("%5.5s %s\n", "%SAMP", "CALLTREE"); y = 0; if (pmcpl_ct_node_dumptop(pmcstat_pmcinfilter, pmcpl_ct_root, rsamples, 0, &y)) PMCSTAT_PRINTW("...\n"); pmcpl_ct_topscreen[1][y] = NULL; pmcpl_ct_node_printtop(rsamples, pmcstat_pmcinfilter, pmcstat_displayheight - 2); pmcpl_ct_samples_free(rsamples); } /* * Handle top mode keypress. */ int -pmcpl_ct_topkeypress(int c, WINDOW *w) +pmcpl_ct_topkeypress(int c, void *arg) { + WINDOW *w; + + w = (WINDOW *)arg; switch (c) { case 'f': pmcstat_skiplink = !pmcstat_skiplink; wprintw(w, "skip empty link %s", pmcstat_skiplink ? "on" : "off"); break; } return 0; } /* * Look for a callgraph node associated with pmc `pmcid' in the global * hash table that corresponds to the given `pc' value in the process map * `ppm'. */ static void pmcpl_ct_node_update(struct pmcpl_ct_node *parent, struct pmcpl_ct_node *child, int pmcin, unsigned v, int cd) { struct pmcpl_ct_arc *arc; int i; assert(parent != NULL); /* * Find related arc in parent node and * increment the sample count. */ for (i = 0; i < parent->pct_narc; i++) { if (parent->pct_arc[i].pcta_child == child) { arc = &parent->pct_arc[i]; pmcpl_ct_samples_grow(&arc->pcta_samples); arc->pcta_samples.sb[pmcin] += v; /* Estimate call count. */ if (cd) { pmcpl_ct_samples_grow(&arc->pcta_callid); if (pmcpl_ct_callid.sb[pmcin] - arc->pcta_callid.sb[pmcin] > 1) arc->pcta_call++; arc->pcta_callid.sb[pmcin] = pmcpl_ct_callid.sb[pmcin]; } return; } } /* * No arc found for us, add ourself to the parent. */ pmcpl_ct_arc_grow(parent->pct_narc, &parent->pct_arc_c, &parent->pct_arc); arc = &parent->pct_arc[parent->pct_narc]; pmcpl_ct_samples_grow(&arc->pcta_samples); arc->pcta_samples.sb[pmcin] = v; arc->pcta_call = 1; if (cd) { pmcpl_ct_samples_grow(&arc->pcta_callid); arc->pcta_callid.sb[pmcin] = pmcpl_ct_callid.sb[pmcin]; } arc->pcta_child = child; parent->pct_narc++; } /* * Lookup by image/pc. */ static struct pmcpl_ct_node * pmcpl_ct_node_hash_lookup(struct pmcstat_image *image, uintfptr_t pc, struct pmcstat_symbol *sym, char *fl, char *fn) { int i; unsigned int hash; struct pmcpl_ct_node *ct; struct pmcpl_ct_node_hash *h; pmcstat_interned_string ifl, ifn; if (fn != NULL) { ifl = pmcstat_string_intern(fl); ifn = pmcstat_string_intern(fn); } else { ifl = 0; ifn = 0; } for (hash = i = 0; i < (int)sizeof(uintfptr_t); i++) hash += (pc >> i) & 0xFF; hash &= PMCSTAT_HASH_MASK; STAILQ_FOREACH(h, &pmcpl_ct_node_hash[hash], pch_next) { ct = h->pch_ctnode; assert(ct != NULL); if (ct->pct_image == image && ct->pct_func == pc) { if (fn == NULL) return (ct); if (ct->pct_type == PMCPL_PCT_NAME && ct->pct_ifl == ifl && ct->pct_ifn == ifn) return (ct); } } /* * We haven't seen this (pmcid, pc) tuple yet, so allocate a * new callgraph node and a new hash table entry for it. */ ct = pmcpl_ct_node_allocate(); if ((h = malloc(sizeof(*h))) == NULL) err(EX_OSERR, "ERROR: Could not allocate callgraph node"); if (fn != NULL) { ct->pct_type = PMCPL_PCT_NAME; ct->pct_ifl = ifl; ct->pct_ifn = ifn; } else ct->pct_type = PMCPL_PCT_ADDR; ct->pct_image = image; ct->pct_func = pc; ct->pct_sym = sym; h->pch_ctnode = ct; STAILQ_INSERT_HEAD(&pmcpl_ct_node_hash[hash], h, pch_next); return (ct); } /* * Record a callchain. */ void pmcpl_ct_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) { int i, n, pmcin; uintfptr_t pc, loadaddress; struct pmcstat_image *image; struct pmcstat_symbol *sym; struct pmcstat_pcmap *ppm[PMC_CALLCHAIN_DEPTH_MAX]; struct pmcstat_process *km; struct pmcpl_ct_node *ct; struct pmcpl_ct_node *ctl[PMC_CALLCHAIN_DEPTH_MAX+1]; (void) cpu; assert(nsamples>0 && nsamples<=PMC_CALLCHAIN_DEPTH_MAX); /* Get the PMC index. */ pmcin = pmcr->pr_pmcin; /* * Validate mapping for the callchain. * Go from bottom to first invalid entry. */ km = pmcstat_kernproc; for (n = 0; n < (int)nsamples; n++) { ppm[n] = pmcstat_process_find_map(usermode ? pp : km, cc[n]); if (ppm[n] == NULL) { /* Detect full frame capture (kernel + user). */ if (!usermode) { ppm[n] = pmcstat_process_find_map(pp, cc[n]); if (ppm[n] != NULL) km = pp; } } if (ppm[n] == NULL) break; } if (n-- == 0) { pmcstat_stats.ps_callchain_dubious_frames++; pmcr->pr_dubious_frames++; return; } /* Increase the call generation counter. */ pmcpl_ct_samples_grow(&pmcpl_ct_callid); pmcpl_ct_callid.sb[pmcin]++; /* * Build node list. */ ctl[0] = pmcpl_ct_root; for (i = 1; n >= 0; n--) { image = ppm[n]->ppm_image; loadaddress = ppm[n]->ppm_lowpc + image->pi_vaddr - image->pi_start; /* Convert to an offset in the image. */ pc = cc[n] - loadaddress; /* * Try determine the function at this offset. If we can't * find a function round leave the `pc' value alone. */ if ((sym = pmcstat_symbol_search(image, pc)) != NULL) pc = sym->ps_start; else pmcstat_stats.ps_samples_unknown_function++; ct = pmcpl_ct_node_hash_lookup(image, pc, sym, NULL, NULL); if (ct == NULL) { pmcstat_stats.ps_callchain_dubious_frames++; continue; } ctl[i++] = ct; } /* No valid node found. */ if (i == 1) return; n = i; ct = ctl[0]; for (i = 1; i < n; i++) pmcpl_ct_node_update(ctl[i-1], ctl[i], pmcin, 1, 1); /* * Increment the sample count for this PMC. */ pmcpl_ct_samples_grow(&ctl[n-1]->pct_samples); ctl[n-1]->pct_samples.sb[pmcin]++; /* Update per instruction sample if required. */ if (args.pa_ctdumpinstr) pmcpl_ct_instr_add(ctl[n-1], pmcin, cc[0] - (ppm[0]->ppm_lowpc + ppm[0]->ppm_image->pi_vaddr - ppm[0]->ppm_image->pi_start), 1); } /* * Print node child cost. */ static void pmcpl_ct_node_printchild(struct pmcpl_ct_node *ct, uintfptr_t paddr, int pline) { int i, j, line; uintfptr_t addr; struct pmcpl_ct_node *child; char sourcefile[PATH_MAX]; char funcname[PATH_MAX]; /* * Child cost. * TODO: attach child cost to the real position in the function. * TODO: cfn= / call addr() / addr(call ) */ for (i=0 ; ipct_narc; i++) { child = ct->pct_arc[i].pcta_child; /* Object binary. */ fprintf(args.pa_graphfile, "cob=%s\n", pmcstat_string_unintern(child->pct_image->pi_fullpath)); /* Child function name. */ addr = child->pct_image->pi_vaddr + child->pct_func; line = 0; /* Child function source file. */ if (child->pct_type == PMCPL_PCT_NAME) { fprintf(args.pa_graphfile, "cfi=%s\ncfn=%s\n", pmcstat_string_unintern(child->pct_ifl), pmcstat_string_unintern(child->pct_ifn)); } else if (pmcstat_image_addr2line(child->pct_image, addr, sourcefile, sizeof(sourcefile), &line, funcname, sizeof(funcname))) { fprintf(args.pa_graphfile, "cfi=%s\ncfn=%s\n", sourcefile, funcname); } else { if (child->pct_sym != NULL) fprintf(args.pa_graphfile, "cfi=???\ncfn=%s\n", pmcstat_string_unintern( child->pct_sym->ps_name)); else fprintf(args.pa_graphfile, "cfi=???\ncfn=%p\n", (void *)addr); } /* Child function address, line and call count. */ fprintf(args.pa_graphfile, "calls=%u %p %u\n", ct->pct_arc[i].pcta_call, (void *)addr, line); /* * Call address, line, sample. * TODO: Associate call address to the right location. */ fprintf(args.pa_graphfile, "%p %u", (void *)paddr, pline); for (j = 0; jpct_arc[i].pcta_samples)); fprintf(args.pa_graphfile, "\n"); } } /* * Print node self cost. */ static void pmcpl_ct_node_printself(struct pmcpl_ct_node *ct) { int i, j, fline, line; uintfptr_t faddr, addr; char sourcefile[PATH_MAX]; char funcname[PATH_MAX]; /* * Object binary. */ fprintf(args.pa_graphfile, "ob=%s\n", pmcstat_string_unintern(ct->pct_image->pi_fullpath)); /* * Function name. */ faddr = ct->pct_image->pi_vaddr + ct->pct_func; fline = 0; if (ct->pct_type == PMCPL_PCT_NAME) { fprintf(args.pa_graphfile, "fl=%s\nfn=%s\n", pmcstat_string_unintern(ct->pct_ifl), pmcstat_string_unintern(ct->pct_ifn)); } else if (pmcstat_image_addr2line(ct->pct_image, faddr, sourcefile, sizeof(sourcefile), &fline, funcname, sizeof(funcname))) { fprintf(args.pa_graphfile, "fl=%s\nfn=%s\n", sourcefile, funcname); } else { if (ct->pct_sym != NULL) fprintf(args.pa_graphfile, "fl=???\nfn=%s\n", pmcstat_string_unintern(ct->pct_sym->ps_name)); else fprintf(args.pa_graphfile, "fl=???\nfn=%p\n", (void *)(ct->pct_image->pi_vaddr + ct->pct_func)); } /* * Self cost. */ if (ct->pct_ninstr > 0) { /* * Per location cost. */ for (i = 0; i < ct->pct_ninstr; i++) { addr = ct->pct_image->pi_vaddr + ct->pct_instr[i].pctf_func; line = 0; pmcstat_image_addr2line(ct->pct_image, addr, sourcefile, sizeof(sourcefile), &line, funcname, sizeof(funcname)); fprintf(args.pa_graphfile, "%p %u", (void *)addr, line); for (j = 0; jpct_instr[i].pctf_samples)); fprintf(args.pa_graphfile, "\n"); } } else { /* Global cost function cost. */ fprintf(args.pa_graphfile, "%p %u", (void *)faddr, fline); for (i = 0; ipct_samples)); fprintf(args.pa_graphfile, "\n"); } pmcpl_ct_node_printchild(ct, faddr, fline); } static void pmcpl_ct_printnode(struct pmcpl_ct_node *ct) { int i; if (ct == pmcpl_ct_root) { fprintf(args.pa_graphfile, "fn=root\n"); fprintf(args.pa_graphfile, "0x0 1"); for (i = 0; ipch_ctnode = ct; STAILQ_INSERT_TAIL(&q, pch, pch_next); ct->pct_color = PMCPL_PCT_BLACK; while (!STAILQ_EMPTY(&q)) { pch = STAILQ_FIRST(&q); STAILQ_REMOVE_HEAD(&q, pch_next); pmcpl_ct_printnode(pch->pch_ctnode); for (i = 0; ipch_ctnode->pct_narc; i++) { child = pch->pch_ctnode->pct_arc[i].pcta_child; if (child->pct_color == PMCPL_PCT_WHITE) { child->pct_color = PMCPL_PCT_BLACK; if ((pchc = malloc(sizeof(*pchc))) == NULL) err(EX_OSERR, "ERROR: Cannot allocate queue"); pchc->pch_ctnode = child; STAILQ_INSERT_TAIL(&q, pchc, pch_next); } } free(pch); } } /* * Detect and fix inlined location. */ static void _pmcpl_ct_expand_inline(struct pmcpl_ct_node *ct) { int i, j; unsigned fline, line, v; uintfptr_t faddr, addr, pc; char sourcefile[PATH_MAX]; char ffuncname[PATH_MAX], funcname[PATH_MAX]; char buffer[PATH_MAX]; struct pmcpl_ct_node *child; /* * Resolve parent and compare to each instr location. */ faddr = ct->pct_image->pi_vaddr + ct->pct_func; fline = 0; if (!pmcstat_image_addr2line(ct->pct_image, faddr, sourcefile, sizeof(sourcefile), &fline, ffuncname, sizeof(ffuncname))) return; for (i = 0; i < ct->pct_ninstr; i++) { addr = ct->pct_image->pi_vaddr + ct->pct_instr[i].pctf_func; line = 0; if (!pmcstat_image_addr2line(ct->pct_image, addr, sourcefile, sizeof(sourcefile), &line, funcname, sizeof(funcname))) continue; if (strcmp(funcname, ffuncname) == 0) continue; /* * - Lookup/create inline node by function name. * - Move instr PMCs to the inline node. * - Link nodes. * The lookup create a specific node per image/pc. */ if (args.pa_verbosity >= 2) fprintf(args.pa_printfile, "WARNING: inlined function at %p %s in %s\n", (void *)addr, funcname, ffuncname); snprintf(buffer, sizeof(buffer), "%s@%s", funcname, ffuncname); child = pmcpl_ct_node_hash_lookup(ct->pct_image, ct->pct_func, ct->pct_sym, sourcefile, buffer); assert(child != NULL); pc = ct->pct_instr[i].pctf_func; for (j = 0; jpct_instr[i].pctf_samples); if (v == 0) continue; pmcpl_ct_instr_add(child, j, pc, v); pmcpl_ct_node_update(ct, child, j, v, 0); if (j < ct->pct_samples.npmcs) ct->pct_samples.sb[j] -= ct->pct_instr[i].pctf_samples.sb[j]; ct->pct_instr[i].pctf_samples.sb[j] = 0; } } } static void pmcpl_ct_expand_inline(void) { int i; struct pmcpl_ct_node_hash *pch; if (!args.pa_ctdumpinstr) return; for (i = 0; i < PMCSTAT_NHASH; i++) STAILQ_FOREACH(pch, &pmcpl_ct_node_hash[i], pch_next) if (pch->pch_ctnode->pct_type == PMCPL_PCT_ADDR) _pmcpl_ct_expand_inline(pch->pch_ctnode); } /* * Clean the PMC name for Kcachegrind formula */ static void pmcpl_ct_fixup_pmcname(char *s) { char *p; for (p = s; *p; p++) if (!isalnum(*p)) *p = '_'; } /* * Print a calltree (KCachegrind) for all PMCs. */ static void pmcpl_ct_print(void) { int i; char name[40]; struct pmcpl_ct_sample rsamples; pmcpl_ct_samples_root(&rsamples); pmcpl_ct_expand_inline(); fprintf(args.pa_graphfile, "version: 1\n" "creator: pmcstat\n" "positions: instr line\n" "events:"); for (i=0; i #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pmcstat.h" #include "pmcstat_log.h" #include "pmcpl_callgraph.h" #include "pmcpl_gprof.h" typedef uint64_t WIDEHISTCOUNTER; +#define min(A,B) ((A) < (B) ? (A) : (B)) +#define max(A,B) ((A) > (B) ? (A) : (B)) + #define WIDEHISTCOUNTER_MAX UINT64_MAX #define HISTCOUNTER_MAX USHRT_MAX #define WIDEHISTCOUNTER_GMONTYPE ((int) 64) #define HISTCOUNTER_GMONTYPE ((int) 0) static int hc_sz=0; /* * struct pmcstat_gmonfile tracks a given 'gmon.out' file. These * files are mmap()'ed in as needed. */ struct pmcstat_gmonfile { LIST_ENTRY(pmcstat_gmonfile) pgf_next; /* list of entries */ int pgf_overflow; /* whether a count overflowed */ pmc_id_t pgf_pmcid; /* id of the associated pmc */ size_t pgf_nbuckets; /* #buckets in this gmon.out */ unsigned int pgf_nsamples; /* #samples in this gmon.out */ pmcstat_interned_string pgf_name; /* pathname of gmon.out file */ size_t pgf_ndatabytes; /* number of bytes mapped */ void *pgf_gmondata; /* pointer to mmap'ed data */ FILE *pgf_file; /* used when writing gmon arcs */ }; /* * Prototypes */ static void pmcstat_gmon_create_file(struct pmcstat_gmonfile *_pgf, struct pmcstat_image *_image); static pmcstat_interned_string pmcstat_gmon_create_name(const char *_sd, struct pmcstat_image *_img, pmc_id_t _pmcid); static void pmcstat_gmon_map_file(struct pmcstat_gmonfile *_pgf); static void pmcstat_gmon_unmap_file(struct pmcstat_gmonfile *_pgf); static struct pmcstat_gmonfile *pmcstat_image_find_gmonfile(struct pmcstat_image *_i, pmc_id_t _id); /* * Create a gmon.out file and size it. */ static void pmcstat_gmon_create_file(struct pmcstat_gmonfile *pgf, struct pmcstat_image *image) { int fd; size_t count; struct gmonhdr gm; const char *pathname; char buffer[DEFAULT_BUFFER_SIZE]; pathname = pmcstat_string_unintern(pgf->pgf_name); if ((fd = open(pathname, O_RDWR|O_NOFOLLOW|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) err(EX_OSERR, "ERROR: Cannot open \"%s\"", pathname); gm.lpc = image->pi_start; gm.hpc = image->pi_end; gm.ncnt = (pgf->pgf_nbuckets * hc_sz) + sizeof(struct gmonhdr); gm.version = GMONVERSION; gm.profrate = 0; /* use ticks */ if (args.pa_flags & FLAG_DO_WIDE_GPROF_HC) gm.histcounter_type = WIDEHISTCOUNTER_GMONTYPE; else gm.histcounter_type = HISTCOUNTER_GMONTYPE; gm.spare[0] = gm.spare[1] = 0; /* Write out the gmon header */ if (write(fd, &gm, sizeof(gm)) < 0) goto error; /* Zero fill the samples[] array */ (void) memset(buffer, 0, sizeof(buffer)); count = pgf->pgf_ndatabytes - sizeof(struct gmonhdr); while (count > sizeof(buffer)) { if (write(fd, &buffer, sizeof(buffer)) < 0) goto error; count -= sizeof(buffer); } if (write(fd, &buffer, count) < 0) goto error; (void) close(fd); return; error: err(EX_OSERR, "ERROR: Cannot write \"%s\"", pathname); } /* * Determine the full pathname of a gmon.out file for a given * (image,pmcid) combination. Return the interned string. */ pmcstat_interned_string pmcstat_gmon_create_name(const char *samplesdir, struct pmcstat_image *image, pmc_id_t pmcid) { const char *pmcname; char fullpath[PATH_MAX]; pmcname = pmcstat_pmcid_to_name(pmcid); if (!pmcname) err(EX_SOFTWARE, "ERROR: cannot find pmcid"); (void) snprintf(fullpath, sizeof(fullpath), "%s/%s/%s", samplesdir, pmcname, pmcstat_string_unintern(image->pi_samplename)); return (pmcstat_string_intern(fullpath)); } /* * Mmap in a gmon.out file for processing. */ static void pmcstat_gmon_map_file(struct pmcstat_gmonfile *pgf) { int fd; const char *pathname; pathname = pmcstat_string_unintern(pgf->pgf_name); /* the gmon.out file must already exist */ if ((fd = open(pathname, O_RDWR | O_NOFOLLOW, 0)) < 0) err(EX_OSERR, "ERROR: cannot open \"%s\"", pathname); pgf->pgf_gmondata = mmap(NULL, pgf->pgf_ndatabytes, PROT_READ|PROT_WRITE, MAP_NOSYNC|MAP_SHARED, fd, 0); if (pgf->pgf_gmondata == MAP_FAILED) err(EX_OSERR, "ERROR: cannot map \"%s\"", pathname); (void) close(fd); } /* * Unmap a gmon.out file after sync'ing its data to disk. */ static void pmcstat_gmon_unmap_file(struct pmcstat_gmonfile *pgf) { (void) msync(pgf->pgf_gmondata, pgf->pgf_ndatabytes, MS_SYNC); (void) munmap(pgf->pgf_gmondata, pgf->pgf_ndatabytes); pgf->pgf_gmondata = NULL; } static void pmcstat_gmon_append_arc(struct pmcstat_image *image, pmc_id_t pmcid, uintptr_t rawfrom, uintptr_t rawto, uint32_t count) { struct rawarc arc; /* from */ const char *pathname; struct pmcstat_gmonfile *pgf; if ((pgf = pmcstat_image_find_gmonfile(image, pmcid)) == NULL) return; if (pgf->pgf_file == NULL) { pathname = pmcstat_string_unintern(pgf->pgf_name); if ((pgf->pgf_file = fopen(pathname, "a")) == NULL) return; } arc.raw_frompc = rawfrom + image->pi_vaddr; arc.raw_selfpc = rawto + image->pi_vaddr; arc.raw_count = count; (void) fwrite(&arc, sizeof(arc), 1, pgf->pgf_file); } static struct pmcstat_gmonfile * pmcstat_image_find_gmonfile(struct pmcstat_image *image, pmc_id_t pmcid) { struct pmcstat_gmonfile *pgf; LIST_FOREACH(pgf, &image->pi_gmlist, pgf_next) if (pgf->pgf_pmcid == pmcid) return (pgf); return (NULL); } static void pmcstat_cgnode_do_gmon_arcs(struct pmcstat_cgnode *cg, pmc_id_t pmcid) { struct pmcstat_cgnode *cgc; /* * Look for child nodes that belong to the same image. */ LIST_FOREACH(cgc, &cg->pcg_children, pcg_sibling) { if (cgc->pcg_image == cg->pcg_image) pmcstat_gmon_append_arc(cg->pcg_image, pmcid, cgc->pcg_func, cg->pcg_func, cgc->pcg_count); if (cgc->pcg_nchildren > 0) pmcstat_cgnode_do_gmon_arcs(cgc, pmcid); } } static void pmcstat_callgraph_do_gmon_arcs_for_pmcid(pmc_id_t pmcid) { int n; struct pmcstat_cgnode_hash *pch; for (n = 0; n < PMCSTAT_NHASH; n++) LIST_FOREACH(pch, &pmcstat_cgnode_hash[n], pch_next) if (pch->pch_pmcid == pmcid && pch->pch_cgnode->pcg_nchildren > 1) pmcstat_cgnode_do_gmon_arcs(pch->pch_cgnode, pmcid); } static void pmcstat_callgraph_do_gmon_arcs(void) { struct pmcstat_pmcrecord *pmcr; LIST_FOREACH(pmcr, &pmcstat_pmcs, pr_next) pmcstat_callgraph_do_gmon_arcs_for_pmcid(pmcr->pr_pmcid); } void pmcpl_gmon_initimage(struct pmcstat_image *pi) { const char *execpath; int count, nlen; char *sn, *snbuf; char name[NAME_MAX]; /* * Look for a suitable name for the sample files associated * with this image: if `basename(path)`+".gmon" is available, * we use that, otherwise we try iterating through * `basename(path)`+ "~" + NNN + ".gmon" till we get a free * entry. */ execpath = pmcstat_string_unintern(pi->pi_execpath); if ((snbuf = strdup(execpath)) == NULL) err(EX_OSERR, "ERROR: Cannot copy \"%s\"", execpath); if ((sn = basename(snbuf)) == NULL) err(EX_OSERR, "ERROR: Cannot process \"%s\"", execpath); nlen = strlen(sn); nlen = min(nlen, (int) (sizeof(name) - sizeof(".gmon"))); snprintf(name, sizeof(name), "%.*s.gmon", nlen, sn); /* try use the unabridged name first */ if (pmcstat_string_lookup(name) == NULL) pi->pi_samplename = pmcstat_string_intern(name); else { /* * Otherwise use a prefix from the original name and * up to 3 digits. */ nlen = strlen(sn); nlen = min(nlen, (int) (sizeof(name)-sizeof("~NNN.gmon"))); count = 0; do { if (++count > 999) errx(EX_CANTCREAT, "ERROR: cannot create a gmon file for" " \"%s\"", name); snprintf(name, sizeof(name), "%.*s~%3.3d.gmon", nlen, sn, count); if (pmcstat_string_lookup(name) == NULL) { pi->pi_samplename = pmcstat_string_intern(name); count = 0; } } while (count > 0); } free(snbuf); LIST_INIT(&pi->pi_gmlist); } void pmcpl_gmon_shutdownimage(struct pmcstat_image *pi) { struct pmcstat_gmonfile *pgf, *pgftmp; LIST_FOREACH_SAFE(pgf, &pi->pi_gmlist, pgf_next, pgftmp) { if (pgf->pgf_file) (void) fclose(pgf->pgf_file); LIST_REMOVE(pgf, pgf_next); free(pgf); } } void pmcpl_gmon_newpmc(pmcstat_interned_string ps, struct pmcstat_pmcrecord *pr) { struct stat st; char fullpath[PATH_MAX]; (void) pr; /* * Create the appropriate directory to hold gmon.out files. */ (void) snprintf(fullpath, sizeof(fullpath), "%s/%s", args.pa_samplesdir, pmcstat_string_unintern(ps)); /* If the path name exists, it should be a directory */ if (stat(fullpath, &st) == 0 && S_ISDIR(st.st_mode)) return; if (mkdir(fullpath, S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) < 0) err(EX_OSERR, "ERROR: Cannot create directory \"%s\"", fullpath); } /* * Increment the bucket in the gmon.out file corresponding to 'pmcid' * and 'pc'. */ void pmcpl_gmon_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) { struct pmcstat_pcmap *map; struct pmcstat_image *image; struct pmcstat_gmonfile *pgf; uintfptr_t bucket; HISTCOUNTER *hc; WIDEHISTCOUNTER *whc; pmc_id_t pmcid; (void) nsamples; (void) usermode; (void) cpu; map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[0]); if (map == NULL) { /* Unknown offset. */ pmcstat_stats.ps_samples_unknown_offset++; return; } assert(cc[0] >= map->ppm_lowpc && cc[0] < map->ppm_highpc); image = map->ppm_image; pmcid = pmcr->pr_pmcid; /* * If this is the first time we are seeing a sample for * this executable image, try determine its parameters. */ if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); + pmcstat_image_determine_type(image, &args); assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN); /* Ignore samples in images that we know nothing about. */ if (image->pi_type == PMCSTAT_IMAGE_INDETERMINABLE) { pmcstat_stats.ps_samples_indeterminable++; return; } /* * Find the gmon file corresponding to 'pmcid', creating it if * needed. */ pgf = pmcstat_image_find_gmonfile(image, pmcid); if (pgf == NULL) { if (hc_sz == 0) { /* Determine the correct histcounter size. */ if (args.pa_flags & FLAG_DO_WIDE_GPROF_HC) hc_sz = sizeof(WIDEHISTCOUNTER); else hc_sz = sizeof(HISTCOUNTER); } if ((pgf = calloc(1, sizeof(*pgf))) == NULL) err(EX_OSERR, "ERROR:"); pgf->pgf_gmondata = NULL; /* mark as unmapped */ pgf->pgf_name = pmcstat_gmon_create_name(args.pa_samplesdir, image, pmcid); pgf->pgf_pmcid = pmcid; assert(image->pi_end > image->pi_start); pgf->pgf_nbuckets = howmany(image->pi_end - image->pi_start, FUNCTION_ALIGNMENT); /* see */ pgf->pgf_ndatabytes = sizeof(struct gmonhdr) + pgf->pgf_nbuckets * hc_sz; pgf->pgf_nsamples = 0; pgf->pgf_file = NULL; pmcstat_gmon_create_file(pgf, image); LIST_INSERT_HEAD(&image->pi_gmlist, pgf, pgf_next); } /* * Map the gmon file in if needed. It may have been mapped * out under memory pressure. */ if (pgf->pgf_gmondata == NULL) pmcstat_gmon_map_file(pgf); assert(pgf->pgf_gmondata != NULL); /* * */ bucket = (cc[0] - map->ppm_lowpc) / FUNCTION_ALIGNMENT; assert(bucket < pgf->pgf_nbuckets); if (args.pa_flags & FLAG_DO_WIDE_GPROF_HC) { whc = (WIDEHISTCOUNTER *) ((uintptr_t) pgf->pgf_gmondata + sizeof(struct gmonhdr)); /* saturating add */ if (whc[bucket] < WIDEHISTCOUNTER_MAX) whc[bucket]++; else /* mark that an overflow occurred */ pgf->pgf_overflow = 1; } else { hc = (HISTCOUNTER *) ((uintptr_t) pgf->pgf_gmondata + sizeof(struct gmonhdr)); /* saturating add */ if (hc[bucket] < HISTCOUNTER_MAX) hc[bucket]++; else /* mark that an overflow occurred */ pgf->pgf_overflow = 1; } pgf->pgf_nsamples++; } /* * Shutdown module. */ void pmcpl_gmon_shutdown(FILE *mf) { int i; struct pmcstat_gmonfile *pgf; struct pmcstat_image *pi; /* * Sync back all gprof flat profile data. */ for (i = 0; i < PMCSTAT_NHASH; i++) { LIST_FOREACH(pi, &pmcstat_image_hash[i], pi_next) { if (mf) (void) fprintf(mf, " \"%s\" => \"%s\"", pmcstat_string_unintern(pi->pi_execpath), pmcstat_string_unintern( pi->pi_samplename)); /* flush gmon.out data to disk */ LIST_FOREACH(pgf, &pi->pi_gmlist, pgf_next) { pmcstat_gmon_unmap_file(pgf); if (mf) (void) fprintf(mf, " %s/%d", pmcstat_pmcid_to_name( pgf->pgf_pmcid), pgf->pgf_nsamples); if (pgf->pgf_overflow && args.pa_verbosity >= 1) warnx( "WARNING: profile \"%s\" overflowed.", pmcstat_string_unintern( pgf->pgf_name)); } if (mf) (void) fprintf(mf, "\n"); } } /* * Compute arcs and add these to the gprof files. */ if (args.pa_flags & FLAG_DO_GPROF && args.pa_graphdepth > 1) pmcstat_callgraph_do_gmon_arcs(); } Index: head/usr.sbin/pmcstat/pmcstat.c =================================================================== --- head/usr.sbin/pmcstat/pmcstat.c (revision 324958) +++ head/usr.sbin/pmcstat/pmcstat.c (revision 324959) @@ -1,1547 +1,1413 @@ /*- * Copyright (c) 2003-2008, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include +#include + #include "pmcstat.h" /* * A given invocation of pmcstat(8) can manage multiple PMCs of both * the system-wide and per-process variety. Each of these could be in * 'counting mode' or in 'sampling mode'. * * For 'counting mode' PMCs, pmcstat(8) will periodically issue a * pmc_read() at the configured time interval and print out the value * of the requested PMCs. * * For 'sampling mode' PMCs it can log to a file for offline analysis, * or can analyse sampling data "on the fly", either by converting * samples to printed textual form or by creating gprof(1) compatible * profiles, one per program executed. When creating gprof(1) * profiles it can optionally merge entries from multiple processes * for a given executable into a single profile file. * * pmcstat(8) can also execute a command line and attach PMCs to the * resulting child process. The protocol used is as follows: * * - parent creates a socketpair for two way communication and * fork()s. * - subsequently: * * /Parent/ /Child/ * * - Wait for childs token. * - Sends token. * - Awaits signal to start. * - Attaches PMCs to the child's pid * and starts them. Sets up * monitoring for the child. * - Signals child to start. * - Receives signal, attempts exec(). * * After this point normal processing can happen. */ /* Globals */ int pmcstat_displayheight = DEFAULT_DISPLAY_HEIGHT; int pmcstat_displaywidth = DEFAULT_DISPLAY_WIDTH; static int pmcstat_sockpair[NSOCKPAIRFD]; static int pmcstat_kq; static kvm_t *pmcstat_kvm; static struct kinfo_proc *pmcstat_plist; struct pmcstat_args args; static void -pmcstat_clone_event_descriptor(struct pmcstat_ev *ev, const cpuset_t *cpumask) -{ - int cpu; - struct pmcstat_ev *ev_clone; - - for (cpu = 0; cpu < CPU_SETSIZE; cpu++) { - if (!CPU_ISSET(cpu, cpumask)) - continue; - - if ((ev_clone = malloc(sizeof(*ev_clone))) == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - (void) memset(ev_clone, 0, sizeof(*ev_clone)); - - ev_clone->ev_count = ev->ev_count; - ev_clone->ev_cpu = cpu; - ev_clone->ev_cumulative = ev->ev_cumulative; - ev_clone->ev_flags = ev->ev_flags; - ev_clone->ev_mode = ev->ev_mode; - ev_clone->ev_name = strdup(ev->ev_name); - if (ev_clone->ev_name == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - ev_clone->ev_pmcid = ev->ev_pmcid; - ev_clone->ev_saved = ev->ev_saved; - ev_clone->ev_spec = strdup(ev->ev_spec); - if (ev_clone->ev_spec == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory"); - - STAILQ_INSERT_TAIL(&args.pa_events, ev_clone, ev_next); - } -} - -static void pmcstat_get_cpumask(const char *cpuspec, cpuset_t *cpumask) { int cpu; const char *s; char *end; CPU_ZERO(cpumask); s = cpuspec; do { cpu = strtol(s, &end, 0); if (cpu < 0 || end == s) errx(EX_USAGE, "ERROR: Illegal CPU specification \"%s\".", cpuspec); CPU_SET(cpu, cpumask); s = end + strspn(end, ", \t"); } while (*s); assert(!CPU_EMPTY(cpumask)); } void -pmcstat_attach_pmcs(void) -{ - struct pmcstat_ev *ev; - struct pmcstat_target *pt; - int count; - - /* Attach all process PMCs to target processes. */ - count = 0; - STAILQ_FOREACH(ev, &args.pa_events, ev_next) { - if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) - continue; - SLIST_FOREACH(pt, &args.pa_targets, pt_next) - if (pmc_attach(ev->ev_pmcid, pt->pt_pid) == 0) - count++; - else if (errno != ESRCH) - err(EX_OSERR, -"ERROR: cannot attach pmc \"%s\" to process %d", - ev->ev_name, (int)pt->pt_pid); - } - - if (count == 0) - errx(EX_DATAERR, "ERROR: No processes were attached to."); -} - - -void pmcstat_cleanup(void) { struct pmcstat_ev *ev; /* release allocated PMCs. */ STAILQ_FOREACH(ev, &args.pa_events, ev_next) if (ev->ev_pmcid != PMC_ID_INVALID) { if (pmc_stop(ev->ev_pmcid) < 0) err(EX_OSERR, "ERROR: cannot stop pmc 0x%x \"%s\"", ev->ev_pmcid, ev->ev_name); if (pmc_release(ev->ev_pmcid) < 0) err(EX_OSERR, "ERROR: cannot release pmc 0x%x \"%s\"", ev->ev_pmcid, ev->ev_name); } /* de-configure the log file if present. */ if (args.pa_flags & (FLAG_HAS_PIPE | FLAG_HAS_OUTPUT_LOGFILE)) (void) pmc_configure_logfile(-1); if (args.pa_logparser) { pmclog_close(args.pa_logparser); args.pa_logparser = NULL; } - pmcstat_shutdown_logging(); + pmcstat_log_shutdown_logging(); } void -pmcstat_create_process(void) -{ - char token; - pid_t pid; - struct kevent kev; - struct pmcstat_target *pt; - - if (socketpair(AF_UNIX, SOCK_STREAM, 0, pmcstat_sockpair) < 0) - err(EX_OSERR, "ERROR: cannot create socket pair"); - - switch (pid = fork()) { - case -1: - err(EX_OSERR, "ERROR: cannot fork"); - /*NOTREACHED*/ - - case 0: /* child */ - (void) close(pmcstat_sockpair[PARENTSOCKET]); - - /* Write a token to tell our parent we've started executing. */ - if (write(pmcstat_sockpair[CHILDSOCKET], "+", 1) != 1) - err(EX_OSERR, "ERROR (child): cannot write token"); - - /* Wait for our parent to signal us to start. */ - if (read(pmcstat_sockpair[CHILDSOCKET], &token, 1) < 0) - err(EX_OSERR, "ERROR (child): cannot read token"); - (void) close(pmcstat_sockpair[CHILDSOCKET]); - - /* exec() the program requested */ - execvp(*args.pa_argv, args.pa_argv); - /* and if that fails, notify the parent */ - kill(getppid(), SIGCHLD); - err(EX_OSERR, "ERROR: execvp \"%s\" failed", *args.pa_argv); - /*NOTREACHED*/ - - default: /* parent */ - (void) close(pmcstat_sockpair[CHILDSOCKET]); - break; - } - - /* Ask to be notified via a kevent when the target process exits. */ - EV_SET(&kev, pid, EVFILT_PROC, EV_ADD|EV_ONESHOT, NOTE_EXIT, 0, - NULL); - if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) - err(EX_OSERR, "ERROR: cannot monitor child process %d", pid); - - if ((pt = malloc(sizeof(*pt))) == NULL) - errx(EX_SOFTWARE, "ERROR: Out of memory."); - - pt->pt_pid = pid; - SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); - - /* Wait for the child to signal that its ready to go. */ - if (read(pmcstat_sockpair[PARENTSOCKET], &token, 1) < 0) - err(EX_OSERR, "ERROR (parent): cannot read token"); - - return; -} - -void pmcstat_find_targets(const char *spec) { int n, nproc, pid, rv; struct pmcstat_target *pt; char errbuf[_POSIX2_LINE_MAX], *end; static struct kinfo_proc *kp; regex_t reg; regmatch_t regmatch; /* First check if we've been given a process id. */ pid = strtol(spec, &end, 0); if (end != spec && pid >= 0) { if ((pt = malloc(sizeof(*pt))) == NULL) goto outofmemory; pt->pt_pid = pid; SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); return; } /* Otherwise treat arg as a regular expression naming processes. */ if (pmcstat_kvm == NULL) { if ((pmcstat_kvm = kvm_openfiles(NULL, "/dev/null", NULL, 0, errbuf)) == NULL) err(EX_OSERR, "ERROR: Cannot open kernel \"%s\"", errbuf); if ((pmcstat_plist = kvm_getprocs(pmcstat_kvm, KERN_PROC_PROC, 0, &nproc)) == NULL) err(EX_OSERR, "ERROR: Cannot get process list: %s", kvm_geterr(pmcstat_kvm)); } else nproc = 0; if ((rv = regcomp(®, spec, REG_EXTENDED|REG_NOSUB)) != 0) { regerror(rv, ®, errbuf, sizeof(errbuf)); err(EX_DATAERR, "ERROR: Failed to compile regex \"%s\": %s", spec, errbuf); } for (n = 0, kp = pmcstat_plist; n < nproc; n++, kp++) { if ((rv = regexec(®, kp->ki_comm, 1, ®match, 0)) == 0) { if ((pt = malloc(sizeof(*pt))) == NULL) goto outofmemory; pt->pt_pid = kp->ki_pid; SLIST_INSERT_HEAD(&args.pa_targets, pt, pt_next); } else if (rv != REG_NOMATCH) { regerror(rv, ®, errbuf, sizeof(errbuf)); errx(EX_SOFTWARE, "ERROR: Regex evalation failed: %s", errbuf); } } regfree(®); return; outofmemory: errx(EX_SOFTWARE, "Out of memory."); /*NOTREACHED*/ } void pmcstat_kill_process(void) { struct pmcstat_target *pt; assert(args.pa_flags & FLAG_HAS_COMMANDLINE); /* * If a command line was specified, it would be the very first * in the list, before any other processes specified by -t. */ pt = SLIST_FIRST(&args.pa_targets); assert(pt != NULL); if (kill(pt->pt_pid, SIGINT) != 0) err(EX_OSERR, "ERROR: cannot signal child process"); } void pmcstat_start_pmcs(void) { struct pmcstat_ev *ev; STAILQ_FOREACH(ev, &args.pa_events, ev_next) { assert(ev->ev_pmcid != PMC_ID_INVALID); if (pmc_start(ev->ev_pmcid) < 0) { warn("ERROR: Cannot start pmc 0x%x \"%s\"", ev->ev_pmcid, ev->ev_name); pmcstat_cleanup(); exit(EX_OSERR); } } - } void pmcstat_print_headers(void) { struct pmcstat_ev *ev; int c, w; (void) fprintf(args.pa_printfile, PRINT_HEADER_PREFIX); STAILQ_FOREACH(ev, &args.pa_events, ev_next) { if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) continue; c = PMC_IS_SYSTEM_MODE(ev->ev_mode) ? 's' : 'p'; if (ev->ev_fieldskip != 0) (void) fprintf(args.pa_printfile, "%*s", ev->ev_fieldskip, ""); w = ev->ev_fieldwidth - ev->ev_fieldskip - 2; if (c == 's') (void) fprintf(args.pa_printfile, "s/%02d/%-*s ", ev->ev_cpu, w-3, ev->ev_name); else (void) fprintf(args.pa_printfile, "p/%*s ", w, ev->ev_name); } (void) fflush(args.pa_printfile); } void pmcstat_print_counters(void) { int extra_width; struct pmcstat_ev *ev; pmc_value_t value; extra_width = sizeof(PRINT_HEADER_PREFIX) - 1; STAILQ_FOREACH(ev, &args.pa_events, ev_next) { /* skip sampling mode counters */ if (PMC_IS_SAMPLING_MODE(ev->ev_mode)) continue; if (pmc_read(ev->ev_pmcid, &value) < 0) err(EX_OSERR, "ERROR: Cannot read pmc \"%s\"", ev->ev_name); (void) fprintf(args.pa_printfile, "%*ju ", ev->ev_fieldwidth + extra_width, (uintmax_t) ev->ev_cumulative ? value : (value - ev->ev_saved)); if (ev->ev_cumulative == 0) ev->ev_saved = value; extra_width = 0; } (void) fflush(args.pa_printfile); } /* * Print output */ void pmcstat_print_pmcs(void) { static int linecount = 0; /* check if we need to print a header line */ if (++linecount > pmcstat_displayheight) { (void) fprintf(args.pa_printfile, "\n"); linecount = 1; } if (linecount == 1) pmcstat_print_headers(); (void) fprintf(args.pa_printfile, "\n"); pmcstat_print_counters(); return; } -/* - * Do process profiling - * - * If a pid was specified, attach each allocated PMC to the target - * process. Otherwise, fork a child and attach the PMCs to the child, - * and have the child exec() the target program. - */ - void -pmcstat_start_process(void) -{ - /* Signal the child to proceed. */ - if (write(pmcstat_sockpair[PARENTSOCKET], "!", 1) != 1) - err(EX_OSERR, "ERROR (parent): write of token failed"); - - (void) close(pmcstat_sockpair[PARENTSOCKET]); -} - -void pmcstat_show_usage(void) { errx(EX_USAGE, "[options] [commandline]\n" "\t Measure process and/or system performance using hardware\n" "\t performance monitoring counters.\n" "\t Options include:\n" "\t -C\t\t (toggle) show cumulative counts\n" "\t -D path\t create profiles in directory \"path\"\n" "\t -E\t\t (toggle) show counts at process exit\n" "\t -F file\t write a system-wide callgraph (Kcachegrind format)" " to \"file\"\n" "\t -G file\t write a system-wide callgraph to \"file\"\n" "\t -M file\t print executable/gmon file map to \"file\"\n" "\t -N\t\t (toggle) capture callchains\n" "\t -O file\t send log output to \"file\"\n" "\t -P spec\t allocate a process-private sampling PMC\n" "\t -R file\t read events from \"file\"\n" "\t -S spec\t allocate a system-wide sampling PMC\n" "\t -T\t\t start in top mode\n" "\t -W\t\t (toggle) show counts per context switch\n" "\t -a file\t print sampled PCs and callgraph to \"file\"\n" "\t -c cpu-list\t set cpus for subsequent system-wide PMCs\n" "\t -d\t\t (toggle) track descendants\n" "\t -e\t\t use wide history counter for gprof(1) output\n" "\t -f spec\t pass \"spec\" to as plugin option\n" "\t -g\t\t produce gprof(1) compatible profiles\n" "\t -k dir\t\t set the path to the kernel\n" "\t -l secs\t set duration time\n" "\t -m file\t print sampled PCs to \"file\"\n" "\t -n rate\t set sampling rate\n" "\t -o file\t send print output to \"file\"\n" "\t -p spec\t allocate a process-private counting PMC\n" "\t -q\t\t suppress verbosity\n" "\t -r fsroot\t specify FS root directory\n" "\t -s spec\t allocate a system-wide counting PMC\n" "\t -t process-spec attach to running processes matching " "\"process-spec\"\n" "\t -v\t\t increase verbosity\n" "\t -w secs\t set printing time interval\n" "\t -z depth\t limit callchain display depth" ); } /* * At exit handler for top mode */ void pmcstat_topexit(void) { if (!args.pa_toptty) return; /* * Shutdown ncurses. */ clrtoeol(); refresh(); endwin(); } /* * Main */ int main(int argc, char **argv) { cpuset_t cpumask, rootmask; double interval; double duration; int option, npmc; int c, check_driver_stats, current_sampling_count; int do_callchain, do_descendants, do_logproccsw, do_logprocexit; int do_print, do_read; size_t len; int graphdepth; int pipefd[2], rfd; int use_cumulative_counts; short cf, cb; char *end, *tmp; const char *errmsg, *graphfilename; enum pmcstat_state runstate; struct pmc_driverstats ds_start, ds_end; struct pmcstat_ev *ev; struct sigaction sa; struct kevent kev; struct winsize ws; struct stat sb; char buffer[PATH_MAX]; check_driver_stats = 0; current_sampling_count = DEFAULT_SAMPLE_COUNT; do_callchain = 1; do_descendants = 0; do_logproccsw = 0; do_logprocexit = 0; use_cumulative_counts = 0; graphfilename = "-"; args.pa_required = 0; args.pa_flags = 0; args.pa_verbosity = 1; args.pa_logfd = -1; args.pa_fsroot = ""; args.pa_samplesdir = "."; args.pa_printfile = stderr; args.pa_graphdepth = DEFAULT_CALLGRAPH_DEPTH; args.pa_graphfile = NULL; args.pa_interval = DEFAULT_WAIT_INTERVAL; args.pa_mapfilename = NULL; args.pa_inputpath = NULL; args.pa_outputpath = NULL; args.pa_pplugin = PMCSTAT_PL_NONE; args.pa_plugin = PMCSTAT_PL_NONE; args.pa_ctdumpinstr = 1; args.pa_topmode = PMCSTAT_TOP_DELTA; args.pa_toptty = 0; args.pa_topcolor = 0; args.pa_mergepmc = 0; args.pa_duration = 0.0; STAILQ_INIT(&args.pa_events); SLIST_INIT(&args.pa_targets); bzero(&ds_start, sizeof(ds_start)); bzero(&ds_end, sizeof(ds_end)); ev = NULL; CPU_ZERO(&cpumask); /* Default to using the running system kernel. */ len = 0; if (sysctlbyname("kern.bootfile", NULL, &len, NULL, 0) == -1) err(EX_OSERR, "ERROR: Cannot determine path of running kernel"); args.pa_kernel = malloc(len); if (args.pa_kernel == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory."); if (sysctlbyname("kern.bootfile", args.pa_kernel, &len, NULL, 0) == -1) err(EX_OSERR, "ERROR: Cannot determine path of running kernel"); /* * The initial CPU mask specifies the root mask of this process * which is usually all CPUs in the system. */ if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1, sizeof(rootmask), &rootmask) == -1) err(EX_OSERR, "ERROR: Cannot determine the root set of CPUs"); CPU_COPY(&rootmask, &cpumask); while ((option = getopt(argc, argv, "CD:EF:G:M:NO:P:R:S:TWa:c:def:gk:l:m:n:o:p:qr:s:t:vw:z:")) != -1) switch (option) { case 'a': /* Annotate + callgraph */ args.pa_flags |= FLAG_DO_ANNOTATE; args.pa_plugin = PMCSTAT_PL_ANNOTATE_CG; graphfilename = optarg; break; case 'C': /* cumulative values */ use_cumulative_counts = !use_cumulative_counts; args.pa_required |= FLAG_HAS_COUNTING_PMCS; break; case 'c': /* CPU */ if (optarg[0] == '*' && optarg[1] == '\0') CPU_COPY(&rootmask, &cpumask); else pmcstat_get_cpumask(optarg, &cpumask); args.pa_flags |= FLAGS_HAS_CPUMASK; args.pa_required |= FLAG_HAS_SYSTEM_PMCS; break; case 'D': if (stat(optarg, &sb) < 0) err(EX_OSERR, "ERROR: Cannot stat \"%s\"", optarg); if (!S_ISDIR(sb.st_mode)) errx(EX_USAGE, "ERROR: \"%s\" is not a directory.", optarg); args.pa_samplesdir = optarg; args.pa_flags |= FLAG_HAS_SAMPLESDIR; args.pa_required |= FLAG_DO_GPROF; break; case 'd': /* toggle descendents */ do_descendants = !do_descendants; args.pa_required |= FLAG_HAS_PROCESS_PMCS; break; case 'e': /* wide gprof metrics */ args.pa_flags |= FLAG_DO_WIDE_GPROF_HC; break; case 'F': /* produce a system-wide calltree */ args.pa_flags |= FLAG_DO_CALLGRAPHS; args.pa_plugin = PMCSTAT_PL_CALLTREE; graphfilename = optarg; break; case 'f': /* plugins options */ if (args.pa_plugin == PMCSTAT_PL_NONE) err(EX_USAGE, "ERROR: Need -g/-G/-m/-T."); pmcstat_pluginconfigure_log(optarg); break; case 'G': /* produce a system-wide callgraph */ args.pa_flags |= FLAG_DO_CALLGRAPHS; args.pa_plugin = PMCSTAT_PL_CALLGRAPH; graphfilename = optarg; break; case 'g': /* produce gprof compatible profiles */ args.pa_flags |= FLAG_DO_GPROF; args.pa_pplugin = PMCSTAT_PL_CALLGRAPH; args.pa_plugin = PMCSTAT_PL_GPROF; break; case 'k': /* pathname to the kernel */ free(args.pa_kernel); args.pa_kernel = strdup(optarg); if (args.pa_kernel == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory"); args.pa_required |= FLAG_DO_ANALYSIS; args.pa_flags |= FLAG_HAS_KERNELPATH; break; case 'l': /* time duration in seconds */ duration = strtod(optarg, &end); if (*end != '\0' || duration <= 0) errx(EX_USAGE, "ERROR: Illegal duration time " "value \"%s\".", optarg); args.pa_flags |= FLAG_HAS_DURATION; args.pa_duration = duration; break; case 'm': args.pa_flags |= FLAG_DO_ANNOTATE; args.pa_plugin = PMCSTAT_PL_ANNOTATE; graphfilename = optarg; break; case 'E': /* log process exit */ do_logprocexit = !do_logprocexit; args.pa_required |= (FLAG_HAS_PROCESS_PMCS | FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); break; case 'M': /* mapfile */ args.pa_mapfilename = optarg; break; case 'N': do_callchain = !do_callchain; args.pa_required |= FLAG_HAS_SAMPLING_PMCS; break; case 'p': /* process virtual counting PMC */ case 's': /* system-wide counting PMC */ case 'P': /* process virtual sampling PMC */ case 'S': /* system-wide sampling PMC */ if ((ev = malloc(sizeof(*ev))) == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory."); switch (option) { case 'p': ev->ev_mode = PMC_MODE_TC; break; case 's': ev->ev_mode = PMC_MODE_SC; break; case 'P': ev->ev_mode = PMC_MODE_TS; break; case 'S': ev->ev_mode = PMC_MODE_SS; break; } if (option == 'P' || option == 'p') { args.pa_flags |= FLAG_HAS_PROCESS_PMCS; args.pa_required |= (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET); } if (option == 'P' || option == 'S') { args.pa_flags |= FLAG_HAS_SAMPLING_PMCS; args.pa_required |= (FLAG_HAS_PIPE | FLAG_HAS_OUTPUT_LOGFILE); } if (option == 'p' || option == 's') args.pa_flags |= FLAG_HAS_COUNTING_PMCS; if (option == 's' || option == 'S') args.pa_flags |= FLAG_HAS_SYSTEM_PMCS; - ev->ev_spec = strdup(optarg); + ev->ev_spec = strdup(optarg); if (ev->ev_spec == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory."); if (option == 'S' || option == 'P') ev->ev_count = current_sampling_count; else ev->ev_count = -1; if (option == 'S' || option == 's') ev->ev_cpu = CPU_FFS(&cpumask) - 1; else ev->ev_cpu = PMC_CPU_ANY; ev->ev_flags = 0; if (do_callchain) ev->ev_flags |= PMC_F_CALLCHAIN; if (do_descendants) ev->ev_flags |= PMC_F_DESCENDANTS; if (do_logprocexit) ev->ev_flags |= PMC_F_LOG_PROCEXIT; if (do_logproccsw) ev->ev_flags |= PMC_F_LOG_PROCCSW; ev->ev_cumulative = use_cumulative_counts; ev->ev_saved = 0LL; ev->ev_pmcid = PMC_ID_INVALID; /* extract event name */ c = strcspn(optarg, ", \t"); ev->ev_name = malloc(c + 1); if (ev->ev_name == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory."); (void) strncpy(ev->ev_name, optarg, c); *(ev->ev_name + c) = '\0'; STAILQ_INSERT_TAIL(&args.pa_events, ev, ev_next); if (option == 's' || option == 'S') { CPU_CLR(ev->ev_cpu, &cpumask); - pmcstat_clone_event_descriptor(ev, &cpumask); + pmcstat_clone_event_descriptor(ev, &cpumask, &args); CPU_SET(ev->ev_cpu, &cpumask); } break; case 'n': /* sampling count */ current_sampling_count = strtol(optarg, &end, 0); if (*end != '\0' || current_sampling_count <= 0) errx(EX_USAGE, "ERROR: Illegal count value \"%s\".", optarg); args.pa_required |= FLAG_HAS_SAMPLING_PMCS; break; case 'o': /* outputfile */ if (args.pa_printfile != NULL && args.pa_printfile != stdout && args.pa_printfile != stderr) (void) fclose(args.pa_printfile); if ((args.pa_printfile = fopen(optarg, "w")) == NULL) errx(EX_OSERR, "ERROR: cannot open \"%s\" for writing.", optarg); args.pa_flags |= FLAG_DO_PRINT; break; case 'O': /* sampling output */ if (args.pa_outputpath) errx(EX_USAGE, "ERROR: option -O may only be specified once."); args.pa_outputpath = optarg; args.pa_flags |= FLAG_HAS_OUTPUT_LOGFILE; break; case 'q': /* quiet mode */ args.pa_verbosity = 0; break; case 'r': /* root FS path */ args.pa_fsroot = optarg; break; case 'R': /* read an existing log file */ if (args.pa_inputpath != NULL) errx(EX_USAGE, "ERROR: option -R may only be specified once."); args.pa_inputpath = optarg; if (args.pa_printfile == stderr) args.pa_printfile = stdout; args.pa_flags |= FLAG_READ_LOGFILE; break; case 't': /* target pid or process name */ pmcstat_find_targets(optarg); args.pa_flags |= FLAG_HAS_TARGET; args.pa_required |= FLAG_HAS_PROCESS_PMCS; break; case 'T': /* top mode */ args.pa_flags |= FLAG_DO_TOP; args.pa_plugin = PMCSTAT_PL_CALLGRAPH; args.pa_ctdumpinstr = 0; args.pa_mergepmc = 1; if (args.pa_printfile == stderr) args.pa_printfile = stdout; break; case 'v': /* verbose */ args.pa_verbosity++; break; case 'w': /* wait interval */ interval = strtod(optarg, &end); if (*end != '\0' || interval <= 0) errx(EX_USAGE, "ERROR: Illegal wait interval value \"%s\".", optarg); args.pa_flags |= FLAG_HAS_WAIT_INTERVAL; args.pa_interval = interval; break; case 'W': /* toggle LOG_CSW */ do_logproccsw = !do_logproccsw; args.pa_required |= (FLAG_HAS_PROCESS_PMCS | FLAG_HAS_COUNTING_PMCS | FLAG_HAS_OUTPUT_LOGFILE); break; case 'z': graphdepth = strtod(optarg, &end); if (*end != '\0' || graphdepth <= 0) errx(EX_USAGE, "ERROR: Illegal callchain depth \"%s\".", optarg); args.pa_graphdepth = graphdepth; args.pa_required |= FLAG_DO_CALLGRAPHS; break; case '?': default: pmcstat_show_usage(); break; } args.pa_argc = (argc -= optind); args.pa_argv = (argv += optind); /* If we read from logfile and no specified CPU mask use * the maximum CPU count. */ if ((args.pa_flags & FLAG_READ_LOGFILE) && (args.pa_flags & FLAGS_HAS_CPUMASK) == 0) CPU_FILL(&cpumask); args.pa_cpumask = cpumask; /* For selecting CPUs using -R. */ if (argc) /* command line present */ args.pa_flags |= FLAG_HAS_COMMANDLINE; if (args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS | FLAG_DO_ANNOTATE | FLAG_DO_TOP)) args.pa_flags |= FLAG_DO_ANALYSIS; /* * Check invocation syntax. */ /* disallow -O and -R together */ if (args.pa_outputpath && args.pa_inputpath) errx(EX_USAGE, "ERROR: options -O and -R are mutually exclusive."); /* disallow -T and -l together */ if ((args.pa_flags & FLAG_HAS_DURATION) && (args.pa_flags & FLAG_DO_TOP)) errx(EX_USAGE, "ERROR: options -T and -l are mutually " "exclusive."); /* -a and -m require -R */ if (args.pa_flags & FLAG_DO_ANNOTATE && args.pa_inputpath == NULL) errx(EX_USAGE, "ERROR: option %s requires an input file", args.pa_plugin == PMCSTAT_PL_ANNOTATE ? "-m" : "-a"); /* -m option is not allowed combined with -g or -G. */ if (args.pa_flags & FLAG_DO_ANNOTATE && args.pa_flags & (FLAG_DO_GPROF | FLAG_DO_CALLGRAPHS)) errx(EX_USAGE, "ERROR: option -m and -g | -G are mutually exclusive"); if (args.pa_flags & FLAG_READ_LOGFILE) { errmsg = NULL; if (args.pa_flags & FLAG_HAS_COMMANDLINE) errmsg = "a command line specification"; else if (args.pa_flags & FLAG_HAS_TARGET) errmsg = "option -t"; else if (!STAILQ_EMPTY(&args.pa_events)) errmsg = "a PMC event specification"; if (errmsg) errx(EX_USAGE, "ERROR: option -R may not be used with %s.", errmsg); } else if (STAILQ_EMPTY(&args.pa_events)) /* All other uses require a PMC spec. */ pmcstat_show_usage(); /* check for -t pid without a process PMC spec */ if ((args.pa_required & FLAG_HAS_TARGET) && (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) errx(EX_USAGE, "ERROR: option -t requires a process mode PMC to be specified." ); /* check for process-mode options without a command or -t pid */ if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) errx(EX_USAGE, "ERROR: options -d, -E, -p, -P, and -W require a command line or target process." ); /* check for -p | -P without a target process of some sort */ if ((args.pa_required & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) && (args.pa_flags & (FLAG_HAS_COMMANDLINE | FLAG_HAS_TARGET)) == 0) errx(EX_USAGE, "ERROR: options -P and -p require a target process or a command line." ); /* check for process-mode options without a process-mode PMC */ if ((args.pa_required & FLAG_HAS_PROCESS_PMCS) && (args.pa_flags & FLAG_HAS_PROCESS_PMCS) == 0) errx(EX_USAGE, "ERROR: options -d, -E, and -W require a process mode PMC to be specified." ); /* check for -c cpu with no system mode PMCs or logfile. */ if ((args.pa_required & FLAG_HAS_SYSTEM_PMCS) && (args.pa_flags & FLAG_HAS_SYSTEM_PMCS) == 0 && (args.pa_flags & FLAG_READ_LOGFILE) == 0) errx(EX_USAGE, "ERROR: option -c requires at least one system mode PMC to be specified." ); /* check for counting mode options without a counting PMC */ if ((args.pa_required & FLAG_HAS_COUNTING_PMCS) && (args.pa_flags & FLAG_HAS_COUNTING_PMCS) == 0) errx(EX_USAGE, "ERROR: options -C, -W and -o require at least one counting mode PMC to be specified." ); /* check for sampling mode options without a sampling PMC spec */ if ((args.pa_required & FLAG_HAS_SAMPLING_PMCS) && (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) == 0) errx(EX_USAGE, "ERROR: options -N, -n and -O require at least one sampling mode PMC to be specified." ); /* check if -g/-G/-m/-T are being used correctly */ if ((args.pa_flags & FLAG_DO_ANALYSIS) && !(args.pa_flags & (FLAG_HAS_SAMPLING_PMCS|FLAG_READ_LOGFILE))) errx(EX_USAGE, "ERROR: options -g/-G/-m/-T require sampling PMCs or -R to be specified." ); /* check if -e was specified without -g */ if ((args.pa_flags & FLAG_DO_WIDE_GPROF_HC) && !(args.pa_flags & FLAG_DO_GPROF)) errx(EX_USAGE, "ERROR: option -e requires gprof mode to be specified." ); /* check if -O was spuriously specified */ if ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) && (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) errx(EX_USAGE, "ERROR: option -O is used only with options -E, -P, -S and -W." ); /* -k kernel path require -g/-G/-m/-T or -R */ if ((args.pa_flags & FLAG_HAS_KERNELPATH) && (args.pa_flags & FLAG_DO_ANALYSIS) == 0 && (args.pa_flags & FLAG_READ_LOGFILE) == 0) errx(EX_USAGE, "ERROR: option -k is only used with -g/-R/-m/-T."); /* -D only applies to gprof output mode (-g) */ if ((args.pa_flags & FLAG_HAS_SAMPLESDIR) && (args.pa_flags & FLAG_DO_GPROF) == 0) errx(EX_USAGE, "ERROR: option -D is only used with -g."); /* -M mapfile requires -g or -R */ if (args.pa_mapfilename != NULL && (args.pa_flags & FLAG_DO_GPROF) == 0 && (args.pa_flags & FLAG_READ_LOGFILE) == 0) errx(EX_USAGE, "ERROR: option -M is only used with -g/-R."); /* * Disallow textual output of sampling PMCs if counting PMCs * have also been asked for, mostly because the combined output * is difficult to make sense of. */ if ((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) && ((args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE) == 0)) errx(EX_USAGE, "ERROR: option -O is required if counting and sampling PMCs are specified together." ); /* * Check if 'kerneldir' refers to a file rather than a * directory. If so, use `dirname path` to determine the * kernel directory. */ (void) snprintf(buffer, sizeof(buffer), "%s%s", args.pa_fsroot, args.pa_kernel); if (stat(buffer, &sb) < 0) err(EX_OSERR, "ERROR: Cannot locate kernel \"%s\"", buffer); if (!S_ISREG(sb.st_mode) && !S_ISDIR(sb.st_mode)) errx(EX_USAGE, "ERROR: \"%s\": Unsupported file type.", buffer); if (!S_ISDIR(sb.st_mode)) { tmp = args.pa_kernel; args.pa_kernel = strdup(dirname(args.pa_kernel)); if (args.pa_kernel == NULL) errx(EX_SOFTWARE, "ERROR: Out of memory"); free(tmp); (void) snprintf(buffer, sizeof(buffer), "%s%s", args.pa_fsroot, args.pa_kernel); if (stat(buffer, &sb) < 0) err(EX_OSERR, "ERROR: Cannot stat \"%s\"", buffer); if (!S_ISDIR(sb.st_mode)) errx(EX_USAGE, "ERROR: \"%s\" is not a directory.", buffer); } /* * If we have a callgraph be created, select the outputfile. */ if (args.pa_flags & FLAG_DO_CALLGRAPHS) { if (strcmp(graphfilename, "-") == 0) args.pa_graphfile = args.pa_printfile; else { args.pa_graphfile = fopen(graphfilename, "w"); if (args.pa_graphfile == NULL) err(EX_OSERR, "ERROR: cannot open \"%s\" for writing", graphfilename); } } if (args.pa_flags & FLAG_DO_ANNOTATE) { args.pa_graphfile = fopen(graphfilename, "w"); if (args.pa_graphfile == NULL) err(EX_OSERR, "ERROR: cannot open \"%s\" for writing", graphfilename); } /* if we've been asked to process a log file, skip init */ if ((args.pa_flags & FLAG_READ_LOGFILE) == 0) { if (pmc_init() < 0) err(EX_UNAVAILABLE, "ERROR: Initialization of the pmc(3) library failed" ); if ((npmc = pmc_npmc(0)) < 0) /* assume all CPUs are identical */ err(EX_OSERR, "ERROR: Cannot determine the number of PMCs on CPU %d", 0); } /* Allocate a kqueue */ if ((pmcstat_kq = kqueue()) < 0) err(EX_OSERR, "ERROR: Cannot allocate kqueue"); /* Setup the logfile as the source. */ if (args.pa_flags & FLAG_READ_LOGFILE) { /* * Print the log in textual form if we haven't been * asked to generate profiling information. */ if ((args.pa_flags & FLAG_DO_ANALYSIS) == 0) args.pa_flags |= FLAG_DO_PRINT; - pmcstat_initialize_logging(); + pmcstat_log_initialize_logging(); rfd = pmcstat_open_log(args.pa_inputpath, PMCSTAT_OPEN_FOR_READ); if ((args.pa_logparser = pmclog_open(rfd)) == NULL) err(EX_OSERR, "ERROR: Cannot create parser"); if (fcntl(rfd, F_SETFL, O_NONBLOCK) < 0) err(EX_OSERR, "ERROR: fcntl(2) failed"); EV_SET(&kev, rfd, EVFILT_READ, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent"); } /* * Configure the specified log file or setup a default log * consumer via a pipe. */ if (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) { if (args.pa_outputpath) args.pa_logfd = pmcstat_open_log(args.pa_outputpath, PMCSTAT_OPEN_FOR_WRITE); else { /* * process the log on the fly by reading it in * through a pipe. */ if (pipe(pipefd) < 0) err(EX_OSERR, "ERROR: pipe(2) failed"); if (fcntl(pipefd[READPIPEFD], F_SETFL, O_NONBLOCK) < 0) err(EX_OSERR, "ERROR: fcntl(2) failed"); EV_SET(&kev, pipefd[READPIPEFD], EVFILT_READ, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent"); args.pa_logfd = pipefd[WRITEPIPEFD]; args.pa_flags |= FLAG_HAS_PIPE; if ((args.pa_flags & FLAG_DO_TOP) == 0) args.pa_flags |= FLAG_DO_PRINT; args.pa_logparser = pmclog_open(pipefd[READPIPEFD]); } if (pmc_configure_logfile(args.pa_logfd) < 0) err(EX_OSERR, "ERROR: Cannot configure log file"); } /* remember to check for driver errors if we are sampling or logging */ check_driver_stats = (args.pa_flags & FLAG_HAS_SAMPLING_PMCS) || (args.pa_flags & FLAG_HAS_OUTPUT_LOGFILE); /* if (args.pa_flags & FLAG_READ_LOGFILE) { * Allocate PMCs. */ STAILQ_FOREACH(ev, &args.pa_events, ev_next) { if (pmc_allocate(ev->ev_spec, ev->ev_mode, ev->ev_flags, ev->ev_cpu, &ev->ev_pmcid) < 0) err(EX_OSERR, "ERROR: Cannot allocate %s-mode pmc with specification \"%s\"", PMC_IS_SYSTEM_MODE(ev->ev_mode) ? "system" : "process", ev->ev_spec); if (PMC_IS_SAMPLING_MODE(ev->ev_mode) && pmc_set(ev->ev_pmcid, ev->ev_count) < 0) err(EX_OSERR, "ERROR: Cannot set sampling count for PMC \"%s\"", ev->ev_name); } /* compute printout widths */ STAILQ_FOREACH(ev, &args.pa_events, ev_next) { int counter_width; int display_width; int header_width; (void) pmc_width(ev->ev_pmcid, &counter_width); header_width = strlen(ev->ev_name) + 2; /* prefix '%c/' */ display_width = (int) floor(counter_width / 3.32193) + 1; if (PMC_IS_SYSTEM_MODE(ev->ev_mode)) header_width += 3; /* 2 digit CPU number + '/' */ if (header_width > display_width) { ev->ev_fieldskip = 0; ev->ev_fieldwidth = header_width; } else { ev->ev_fieldskip = display_width - header_width; ev->ev_fieldwidth = display_width; } } /* * If our output is being set to a terminal, register a handler * for window size changes. */ if (isatty(fileno(args.pa_printfile))) { if (ioctl(fileno(args.pa_printfile), TIOCGWINSZ, &ws) < 0) err(EX_OSERR, "ERROR: Cannot determine window size"); pmcstat_displayheight = ws.ws_row - 1; pmcstat_displaywidth = ws.ws_col - 1; EV_SET(&kev, SIGWINCH, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for SIGWINCH"); args.pa_toptty = 1; } /* * Listen to key input in top mode. */ if (args.pa_flags & FLAG_DO_TOP) { EV_SET(&kev, fileno(stdin), EVFILT_READ, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent"); } EV_SET(&kev, SIGINT, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for SIGINT"); EV_SET(&kev, SIGIO, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for SIGIO"); /* * An exec() failure of a forked child is signalled by the * child sending the parent a SIGCHLD. We don't register an * actual signal handler for SIGCHLD, but instead use our * kqueue to pick up the signal. */ EV_SET(&kev, SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for SIGCHLD"); /* * Setup a timer if we have counting mode PMCs needing to be printed or * top mode plugin is active. */ if (((args.pa_flags & FLAG_HAS_COUNTING_PMCS) && (args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) || (args.pa_flags & FLAG_DO_TOP)) { EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0, args.pa_interval * 1000, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for timer"); } /* * Setup a duration timer if we have sampling mode PMCs and * a duration time is set */ if ((args.pa_flags & FLAG_HAS_SAMPLING_PMCS) && (args.pa_flags & FLAG_HAS_DURATION)) { EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD, 0, args.pa_duration * 1000, NULL); if (kevent(pmcstat_kq, &kev, 1, NULL, 0, NULL) < 0) err(EX_OSERR, "ERROR: Cannot register kevent for " "time duration"); } /* attach PMCs to the target process, starting it if specified */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) - pmcstat_create_process(); + pmcstat_create_process(pmcstat_sockpair, &args, pmcstat_kq); if (check_driver_stats && pmc_get_driver_stats(&ds_start) < 0) err(EX_OSERR, "ERROR: Cannot retrieve driver statistics"); /* Attach process pmcs to the target process. */ if (args.pa_flags & (FLAG_HAS_TARGET | FLAG_HAS_COMMANDLINE)) { if (SLIST_EMPTY(&args.pa_targets)) errx(EX_DATAERR, "ERROR: No matching target processes."); if (args.pa_flags & FLAG_HAS_PROCESS_PMCS) - pmcstat_attach_pmcs(); + pmcstat_attach_pmcs(&args); if (pmcstat_kvm) { kvm_close(pmcstat_kvm); pmcstat_kvm = NULL; } } /* start the pmcs */ pmcstat_start_pmcs(); /* start the (commandline) process if needed */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) - pmcstat_start_process(); + pmcstat_start_process(pmcstat_sockpair); /* initialize logging */ - pmcstat_initialize_logging(); + pmcstat_log_initialize_logging(); /* Handle SIGINT using the kqueue loop */ sa.sa_handler = SIG_IGN; sa.sa_flags = 0; (void) sigemptyset(&sa.sa_mask); if (sigaction(SIGINT, &sa, NULL) < 0) err(EX_OSERR, "ERROR: Cannot install signal handler"); /* * Setup the top mode display. */ if (args.pa_flags & FLAG_DO_TOP) { args.pa_flags &= ~FLAG_DO_PRINT; if (args.pa_toptty) { /* * Init ncurses. */ initscr(); if(has_colors() == TRUE) { args.pa_topcolor = 1; start_color(); use_default_colors(); pair_content(0, &cf, &cb); init_pair(1, COLOR_RED, cb); init_pair(2, COLOR_YELLOW, cb); init_pair(3, COLOR_GREEN, cb); } cbreak(); noecho(); nonl(); nodelay(stdscr, 1); intrflush(stdscr, FALSE); keypad(stdscr, TRUE); clear(); /* Get terminal width / height with ncurses. */ getmaxyx(stdscr, pmcstat_displayheight, pmcstat_displaywidth); pmcstat_displayheight--; pmcstat_displaywidth--; atexit(pmcstat_topexit); } } /* * loop till either the target process (if any) exits, or we * are killed by a SIGINT or we reached the time duration. */ runstate = PMCSTAT_RUNNING; do_print = do_read = 0; do { if ((c = kevent(pmcstat_kq, NULL, 0, &kev, 1, NULL)) <= 0) { if (errno != EINTR) err(EX_OSERR, "ERROR: kevent failed"); else continue; } if (kev.flags & EV_ERROR) errc(EX_OSERR, kev.data, "ERROR: kevent failed"); switch (kev.filter) { case EVFILT_PROC: /* target has exited */ - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); do_print = 1; break; case EVFILT_READ: /* log file data is present */ if (kev.ident == (unsigned)fileno(stdin) && (args.pa_flags & FLAG_DO_TOP)) { if (pmcstat_keypress_log()) - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); } else { do_read = 0; runstate = pmcstat_process_log(); } break; case EVFILT_SIGNAL: if (kev.ident == SIGCHLD) { /* * The child process sends us a * SIGCHLD if its exec() failed. We * wait for it to exit and then exit * ourselves. */ (void) wait(&c); runstate = PMCSTAT_FINISHED; } else if (kev.ident == SIGIO) { /* * We get a SIGIO if a PMC loses all * of its targets, or if logfile * writes encounter an error. */ - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); do_print = 1; /* print PMCs at exit */ } else if (kev.ident == SIGINT) { /* Kill the child process if we started it */ if (args.pa_flags & FLAG_HAS_COMMANDLINE) pmcstat_kill_process(); - runstate = pmcstat_close_log(); + runstate = pmcstat_close_log(&args); } else if (kev.ident == SIGWINCH) { if (ioctl(fileno(args.pa_printfile), TIOCGWINSZ, &ws) < 0) err(EX_OSERR, "ERROR: Cannot determine window size"); pmcstat_displayheight = ws.ws_row - 1; pmcstat_displaywidth = ws.ws_col - 1; } else assert(0); break; case EVFILT_TIMER: /* time duration reached, exit */ if (args.pa_flags & FLAG_HAS_DURATION) { runstate = PMCSTAT_FINISHED; break; } /* print out counting PMCs */ if ((args.pa_flags & FLAG_DO_TOP) && pmc_flush_logfile() == 0) do_read = 1; do_print = 1; break; } if (do_print && !do_read) { if ((args.pa_required & FLAG_HAS_OUTPUT_LOGFILE) == 0) { pmcstat_print_pmcs(); if (runstate == PMCSTAT_FINISHED && /* final newline */ (args.pa_flags & FLAG_DO_PRINT) == 0) (void) fprintf(args.pa_printfile, "\n"); } if (args.pa_flags & FLAG_DO_TOP) pmcstat_display_log(); do_print = 0; } } while (runstate != PMCSTAT_FINISHED); if ((args.pa_flags & FLAG_DO_TOP) && args.pa_toptty) { pmcstat_topexit(); args.pa_toptty = 0; } /* flush any pending log entries */ if (args.pa_flags & (FLAG_HAS_OUTPUT_LOGFILE | FLAG_HAS_PIPE)) pmc_close_logfile(); pmcstat_cleanup(); /* check if the driver lost any samples or events */ if (check_driver_stats) { if (pmc_get_driver_stats(&ds_end) < 0) err(EX_OSERR, "ERROR: Cannot retrieve driver statistics"); if (ds_start.pm_intr_bufferfull != ds_end.pm_intr_bufferfull && args.pa_verbosity > 0) warnx( "WARNING: sampling was paused at least %u time%s.\n" "Please consider tuning the \"kern.hwpmc.nsamples\" tunable.", ds_end.pm_intr_bufferfull - ds_start.pm_intr_bufferfull, ((ds_end.pm_intr_bufferfull - ds_start.pm_intr_bufferfull) != 1) ? "s" : "" ); if (ds_start.pm_buffer_requests_failed != ds_end.pm_buffer_requests_failed && args.pa_verbosity > 0) warnx( "WARNING: at least %u event%s were discarded while running.\n" "Please consider tuning the \"kern.hwpmc.nbuffers\" tunable.", ds_end.pm_buffer_requests_failed - ds_start.pm_buffer_requests_failed, ((ds_end.pm_buffer_requests_failed - ds_start.pm_buffer_requests_failed) != 1) ? "s" : "" ); } exit(EX_OK); } Index: head/usr.sbin/pmcstat/pmcstat.h =================================================================== --- head/usr.sbin/pmcstat/pmcstat.h (revision 324958) +++ head/usr.sbin/pmcstat/pmcstat.h (revision 324959) @@ -1,187 +1,90 @@ /*- * Copyright (c) 2005-2007, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _PMCSTAT_H_ #define _PMCSTAT_H_ -#include +#include -#define FLAG_HAS_TARGET 0x00000001 /* process target */ -#define FLAG_HAS_WAIT_INTERVAL 0x00000002 /* -w secs */ -#define FLAG_HAS_OUTPUT_LOGFILE 0x00000004 /* -O file or pipe */ -#define FLAG_HAS_COMMANDLINE 0x00000008 /* command */ -#define FLAG_HAS_SAMPLING_PMCS 0x00000010 /* -S or -P */ -#define FLAG_HAS_COUNTING_PMCS 0x00000020 /* -s or -p */ -#define FLAG_HAS_PROCESS_PMCS 0x00000040 /* -P or -p */ -#define FLAG_HAS_SYSTEM_PMCS 0x00000080 /* -S or -s */ -#define FLAG_HAS_PIPE 0x00000100 /* implicit log */ -#define FLAG_READ_LOGFILE 0x00000200 /* -R file */ -#define FLAG_DO_GPROF 0x00000400 /* -g */ -#define FLAG_HAS_SAMPLESDIR 0x00000800 /* -D dir */ -#define FLAG_HAS_KERNELPATH 0x00001000 /* -k kernel */ -#define FLAG_DO_PRINT 0x00002000 /* -o */ -#define FLAG_DO_CALLGRAPHS 0x00004000 /* -G or -F */ -#define FLAG_DO_ANNOTATE 0x00008000 /* -m */ -#define FLAG_DO_TOP 0x00010000 /* -T */ -#define FLAG_DO_ANALYSIS 0x00020000 /* -g or -G or -m or -T */ -#define FLAGS_HAS_CPUMASK 0x00040000 /* -c */ -#define FLAG_HAS_DURATION 0x00080000 /* -l secs */ -#define FLAG_DO_WIDE_GPROF_HC 0x00100000 /* -e */ - #define DEFAULT_SAMPLE_COUNT 65536 #define DEFAULT_WAIT_INTERVAL 5.0 #define DEFAULT_DISPLAY_HEIGHT 256 /* file virtual height */ #define DEFAULT_DISPLAY_WIDTH 1024 /* file virtual width */ #define DEFAULT_BUFFER_SIZE 4096 #define DEFAULT_CALLGRAPH_DEPTH 16 #define PRINT_HEADER_PREFIX "# " -#define READPIPEFD 0 -#define WRITEPIPEFD 1 -#define NPIPEFD 2 -#define NSOCKPAIRFD 2 -#define PARENTSOCKET 0 -#define CHILDSOCKET 1 - -#define PMCSTAT_OPEN_FOR_READ 0 -#define PMCSTAT_OPEN_FOR_WRITE 1 #define PMCSTAT_DEFAULT_NW_HOST "localhost" #define PMCSTAT_DEFAULT_NW_PORT "9000" -#define PMCSTAT_NHASH 256 -#define PMCSTAT_HASH_MASK 0xFF #define PMCSTAT_LDD_COMMAND "/usr/bin/ldd" #define PMCSTAT_PRINT_ENTRY(T,...) do { \ (void) fprintf(args.pa_printfile, "%-9s", T); \ (void) fprintf(args.pa_printfile, " " __VA_ARGS__); \ (void) fprintf(args.pa_printfile, "\n"); \ } while (0) #define PMCSTAT_PL_NONE 0 #define PMCSTAT_PL_CALLGRAPH 1 #define PMCSTAT_PL_GPROF 2 #define PMCSTAT_PL_ANNOTATE 3 #define PMCSTAT_PL_CALLTREE 4 #define PMCSTAT_PL_ANNOTATE_CG 5 #define PMCSTAT_TOP_DELTA 0 #define PMCSTAT_TOP_ACCUM 1 -#define min(A,B) ((A) < (B) ? (A) : (B)) -#define max(A,B) ((A) > (B) ? (A) : (B)) - -enum pmcstat_state { - PMCSTAT_FINISHED = 0, - PMCSTAT_EXITING = 1, - PMCSTAT_RUNNING = 2 -}; - -struct pmcstat_ev { - STAILQ_ENTRY(pmcstat_ev) ev_next; - int ev_count; /* associated count if in sampling mode */ - uint32_t ev_cpu; /* cpus for this event */ - int ev_cumulative; /* show cumulative counts */ - int ev_flags; /* PMC_F_* */ - int ev_fieldskip; /* #leading spaces */ - int ev_fieldwidth; /* print width */ - enum pmc_mode ev_mode; /* desired mode */ - char *ev_name; /* (derived) event name */ - pmc_id_t ev_pmcid; /* allocated ID */ - pmc_value_t ev_saved; /* for incremental counts */ - char *ev_spec; /* event specification */ -}; - -struct pmcstat_target { - SLIST_ENTRY(pmcstat_target) pt_next; - pid_t pt_pid; -}; - -struct pmcstat_args { - int pa_flags; /* argument flags */ - int pa_required; /* required features */ - int pa_pplugin; /* pre-processing plugin */ - int pa_plugin; /* analysis plugin */ - int pa_verbosity; /* verbosity level */ - FILE *pa_printfile; /* where to send printed output */ - int pa_logfd; /* output log file */ - char *pa_inputpath; /* path to input log */ - char *pa_outputpath; /* path to output log */ - void *pa_logparser; /* log file parser */ - const char *pa_fsroot; /* FS root where executables reside */ - char *pa_kernel; /* pathname of the kernel */ - const char *pa_samplesdir; /* directory for profile files */ - const char *pa_mapfilename;/* mapfile name */ - FILE *pa_graphfile; /* where to send the callgraph */ - int pa_graphdepth; /* print depth for callgraphs */ - double pa_interval; /* printing interval in seconds */ - cpuset_t pa_cpumask; /* filter for CPUs analysed */ - int pa_ctdumpinstr; /* dump instructions with calltree */ - int pa_topmode; /* delta or accumulative */ - int pa_toptty; /* output to tty or file */ - int pa_topcolor; /* terminal support color */ - int pa_mergepmc; /* merge PMC with same name */ - double pa_duration; /* time duration */ - int pa_argc; - char **pa_argv; - STAILQ_HEAD(, pmcstat_ev) pa_events; - SLIST_HEAD(, pmcstat_target) pa_targets; -}; - extern int pmcstat_displayheight; /* current terminal height */ extern int pmcstat_displaywidth; /* current terminal width */ extern struct pmcstat_args args; /* command line args */ /* Function prototypes */ -void pmcstat_attach_pmcs(void); void pmcstat_cleanup(void); -int pmcstat_close_log(void); -void pmcstat_create_process(void); void pmcstat_find_targets(const char *_arg); -void pmcstat_initialize_logging(void); void pmcstat_kill_process(void); -int pmcstat_open_log(const char *_p, int _mode); void pmcstat_print_counters(void); void pmcstat_print_headers(void); void pmcstat_print_pmcs(void); void pmcstat_show_usage(void); -void pmcstat_shutdown_logging(void); void pmcstat_start_pmcs(void); -void pmcstat_start_process(void); int pmcstat_process_log(void); int pmcstat_keypress_log(void); void pmcstat_display_log(void); void pmcstat_pluginconfigure_log(char *_opt); -void pmcstat_topexit(void); +void pmcstat_topexit(void); + +void pmcstat_log_shutdown_logging(void); +void pmcstat_log_initialize_logging(void); #endif /* _PMCSTAT_H_ */ Index: head/usr.sbin/pmcstat/pmcstat_log.c =================================================================== --- head/usr.sbin/pmcstat/pmcstat_log.c (revision 324958) +++ head/usr.sbin/pmcstat/pmcstat_log.c (revision 324959) @@ -1,2238 +1,747 @@ /*- * Copyright (c) 2005-2007, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Transform a hwpmc(4) log into human readable form, and into * gprof(1) compatible profiles. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pmcstat.h" #include "pmcstat_log.h" #include "pmcstat_top.h" -#define PMCSTAT_ALLOCATE 1 - /* * PUBLIC INTERFACES * * pmcstat_initialize_logging() initialize this module, called first * pmcstat_shutdown_logging() orderly shutdown, called last * pmcstat_open_log() open an eventlog for processing * pmcstat_process_log() print/convert an event log * pmcstat_display_log() top mode display for the log * pmcstat_close_log() finish processing an event log * * IMPLEMENTATION NOTES * * We correlate each 'callchain' or 'sample' entry seen in the event * log back to an executable object in the system. Executable objects * include: * - program executables, * - shared libraries loaded by the runtime loader, * - dlopen()'ed objects loaded by the program, * - the runtime loader itself, * - the kernel and kernel modules. * * Each process that we know about is treated as a set of regions that * map to executable objects. Processes are described by * 'pmcstat_process' structures. Executable objects are tracked by * 'pmcstat_image' structures. The kernel and kernel modules are * common to all processes (they reside at the same virtual addresses * for all processes). Individual processes can have their text * segments and shared libraries loaded at process-specific locations. * * A given executable object can be in use by multiple processes * (e.g., libc.so) and loaded at a different address in each. * pmcstat_pcmap structures track per-image mappings. * * The sample log could have samples from multiple PMCs; we * generate one 'gmon.out' profile per PMC. * * IMPLEMENTATION OF GMON OUTPUT * * Each executable object gets one 'gmon.out' profile, per PMC in * use. Creation of 'gmon.out' profiles is done lazily. The * 'gmon.out' profiles generated for a given sampling PMC are * aggregates of all the samples for that particular executable * object. * * IMPLEMENTATION OF SYSTEM-WIDE CALLGRAPH OUTPUT * * Each active pmcid has its own callgraph structure, described by a * 'struct pmcstat_callgraph'. Given a process id and a list of pc * values, we map each pc value to a tuple (image, symbol), where * 'image' denotes an executable object and 'symbol' is the closest * symbol that precedes the pc value. Each pc value in the list is * also given a 'rank' that reflects its depth in the call stack. */ struct pmcstat_pmcs pmcstat_pmcs = LIST_HEAD_INITIALIZER(pmcstat_pmcs); /* * All image descriptors are kept in a hash table. */ struct pmcstat_image_hash_list pmcstat_image_hash[PMCSTAT_NHASH]; /* * All process descriptors are kept in a hash table. */ struct pmcstat_process_hash_list pmcstat_process_hash[PMCSTAT_NHASH]; struct pmcstat_stats pmcstat_stats; /* statistics */ static int ps_samples_period; /* samples count between top refresh. */ struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */ #include "pmcpl_gprof.h" #include "pmcpl_callgraph.h" #include "pmcpl_annotate.h" #include "pmcpl_annotate_cg.h" #include "pmcpl_calltree.h" -static struct pmc_plugins { - const char *pl_name; /* name */ - - /* configure */ - int (*pl_configure)(char *opt); - - /* init and shutdown */ - int (*pl_init)(void); - void (*pl_shutdown)(FILE *mf); - - /* sample processing */ - void (*pl_process)(struct pmcstat_process *pp, - struct pmcstat_pmcrecord *pmcr, uint32_t nsamples, - uintfptr_t *cc, int usermode, uint32_t cpu); - - /* image */ - void (*pl_initimage)(struct pmcstat_image *pi); - void (*pl_shutdownimage)(struct pmcstat_image *pi); - - /* pmc */ - void (*pl_newpmc)(pmcstat_interned_string ps, - struct pmcstat_pmcrecord *pr); - - /* top display */ - void (*pl_topdisplay)(void); - - /* top keypress */ - int (*pl_topkeypress)(int c, WINDOW *w); - -} plugins[] = { +static struct pmc_plugins plugins[] = { { .pl_name = "none", }, { .pl_name = "callgraph", .pl_init = pmcpl_cg_init, .pl_shutdown = pmcpl_cg_shutdown, .pl_process = pmcpl_cg_process, .pl_topkeypress = pmcpl_cg_topkeypress, .pl_topdisplay = pmcpl_cg_topdisplay }, { .pl_name = "gprof", .pl_shutdown = pmcpl_gmon_shutdown, .pl_process = pmcpl_gmon_process, .pl_initimage = pmcpl_gmon_initimage, .pl_shutdownimage = pmcpl_gmon_shutdownimage, .pl_newpmc = pmcpl_gmon_newpmc }, { .pl_name = "annotate", .pl_process = pmcpl_annotate_process }, { .pl_name = "calltree", .pl_configure = pmcpl_ct_configure, .pl_init = pmcpl_ct_init, .pl_shutdown = pmcpl_ct_shutdown, .pl_process = pmcpl_ct_process, .pl_topkeypress = pmcpl_ct_topkeypress, .pl_topdisplay = pmcpl_ct_topdisplay }, { .pl_name = "annotate_cg", .pl_process = pmcpl_annotate_cg_process }, { .pl_name = NULL } }; static int pmcstat_mergepmc; int pmcstat_pmcinfilter = 0; /* PMC filter for top mode. */ float pmcstat_threshold = 0.5; /* Cost filter for top mode. */ /* * Prototypes */ -static struct pmcstat_image *pmcstat_image_from_path(pmcstat_interned_string - _path, int _iskernelmodule); -static void pmcstat_image_get_aout_params(struct pmcstat_image *_image); -static void pmcstat_image_get_elf_params(struct pmcstat_image *_image); -static void pmcstat_image_link(struct pmcstat_process *_pp, - struct pmcstat_image *_i, uintfptr_t _lpc); - -static void pmcstat_pmcid_add(pmc_id_t _pmcid, - pmcstat_interned_string _name); - -static void pmcstat_process_aout_exec(struct pmcstat_process *_pp, - struct pmcstat_image *_image, uintfptr_t _entryaddr); -static void pmcstat_process_elf_exec(struct pmcstat_process *_pp, - struct pmcstat_image *_image, uintfptr_t _entryaddr); -static void pmcstat_process_exec(struct pmcstat_process *_pp, - pmcstat_interned_string _path, uintfptr_t _entryaddr); -static struct pmcstat_process *pmcstat_process_lookup(pid_t _pid, - int _allocate); -static int pmcstat_string_compute_hash(const char *_string); -static void pmcstat_string_initialize(void); -static int pmcstat_string_lookup_hash(pmcstat_interned_string _is); -static void pmcstat_string_shutdown(void); static void pmcstat_stats_reset(int _reset_global); /* - * A simple implementation of interned strings. Each interned string - * is assigned a unique address, so that subsequent string compares - * can be done by a simple pointer comparison instead of using - * strcmp(). This speeds up hash table lookups and saves memory if - * duplicate strings are the norm. - */ -struct pmcstat_string { - LIST_ENTRY(pmcstat_string) ps_next; /* hash link */ - int ps_len; - int ps_hash; - char *ps_string; -}; - -static LIST_HEAD(,pmcstat_string) pmcstat_string_hash[PMCSTAT_NHASH]; - -/* * PMC count. */ int pmcstat_npmcs; /* * PMC Top mode pause state. */ static int pmcstat_pause; static void pmcstat_stats_reset(int reset_global) { struct pmcstat_pmcrecord *pr; /* Flush PMCs stats. */ LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) { pr->pr_samples = 0; pr->pr_dubious_frames = 0; } ps_samples_period = 0; /* Flush global stats. */ if (reset_global) bzero(&pmcstat_stats, sizeof(struct pmcstat_stats)); } /* - * Compute a 'hash' value for a string. - */ - -static int -pmcstat_string_compute_hash(const char *s) -{ - unsigned hash; - - for (hash = 2166136261; *s; s++) - hash = (hash ^ *s) * 16777619; - - return (hash & PMCSTAT_HASH_MASK); -} - -/* - * Intern a copy of string 's', and return a pointer to the - * interned structure. - */ - -pmcstat_interned_string -pmcstat_string_intern(const char *s) -{ - struct pmcstat_string *ps; - const struct pmcstat_string *cps; - int hash, len; - - if ((cps = pmcstat_string_lookup(s)) != NULL) - return (cps); - - hash = pmcstat_string_compute_hash(s); - len = strlen(s); - - if ((ps = malloc(sizeof(*ps))) == NULL) - err(EX_OSERR, "ERROR: Could not intern string"); - ps->ps_len = len; - ps->ps_hash = hash; - ps->ps_string = strdup(s); - LIST_INSERT_HEAD(&pmcstat_string_hash[hash], ps, ps_next); - return ((pmcstat_interned_string) ps); -} - -const char * -pmcstat_string_unintern(pmcstat_interned_string str) -{ - const char *s; - - s = ((const struct pmcstat_string *) str)->ps_string; - return (s); -} - -pmcstat_interned_string -pmcstat_string_lookup(const char *s) -{ - struct pmcstat_string *ps; - int hash, len; - - hash = pmcstat_string_compute_hash(s); - len = strlen(s); - - LIST_FOREACH(ps, &pmcstat_string_hash[hash], ps_next) - if (ps->ps_len == len && ps->ps_hash == hash && - strcmp(ps->ps_string, s) == 0) - return (ps); - return (NULL); -} - -static int -pmcstat_string_lookup_hash(pmcstat_interned_string s) -{ - const struct pmcstat_string *ps; - - ps = (const struct pmcstat_string *) s; - return (ps->ps_hash); -} - -/* - * Initialize the string interning facility. - */ - -static void -pmcstat_string_initialize(void) -{ - int i; - - for (i = 0; i < PMCSTAT_NHASH; i++) - LIST_INIT(&pmcstat_string_hash[i]); -} - -/* - * Destroy the string table, free'ing up space. - */ - -static void -pmcstat_string_shutdown(void) -{ - int i; - struct pmcstat_string *ps, *pstmp; - - for (i = 0; i < PMCSTAT_NHASH; i++) - LIST_FOREACH_SAFE(ps, &pmcstat_string_hash[i], ps_next, - pstmp) { - LIST_REMOVE(ps, ps_next); - free(ps->ps_string); - free(ps); - } -} - -/* - * Determine whether a given executable image is an A.OUT object, and - * if so, fill in its parameters from the text file. - * Sets image->pi_type. - */ - -static void -pmcstat_image_get_aout_params(struct pmcstat_image *image) -{ - int fd; - ssize_t nbytes; - struct exec ex; - const char *path; - char buffer[PATH_MAX]; - - path = pmcstat_string_unintern(image->pi_execpath); - assert(path != NULL); - - if (image->pi_iskernelmodule) - errx(EX_SOFTWARE, - "ERROR: a.out kernel modules are unsupported \"%s\"", path); - - (void) snprintf(buffer, sizeof(buffer), "%s%s", - args.pa_fsroot, path); - - if ((fd = open(buffer, O_RDONLY, 0)) < 0 || - (nbytes = read(fd, &ex, sizeof(ex))) < 0) { - if (args.pa_verbosity >= 2) - warn("WARNING: Cannot determine type of \"%s\"", - path); - image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; - if (fd != -1) - (void) close(fd); - return; - } - - (void) close(fd); - - if ((unsigned) nbytes != sizeof(ex) || - N_BADMAG(ex)) - return; - - image->pi_type = PMCSTAT_IMAGE_AOUT; - - /* TODO: the rest of a.out processing */ - - return; -} - -/* - * Helper function. - */ - -static int -pmcstat_symbol_compare(const void *a, const void *b) -{ - const struct pmcstat_symbol *sym1, *sym2; - - sym1 = (const struct pmcstat_symbol *) a; - sym2 = (const struct pmcstat_symbol *) b; - - if (sym1->ps_end <= sym2->ps_start) - return (-1); - if (sym1->ps_start >= sym2->ps_end) - return (1); - return (0); -} - -/* - * Map an address to a symbol in an image. - */ - -struct pmcstat_symbol * -pmcstat_symbol_search(struct pmcstat_image *image, uintfptr_t addr) -{ - struct pmcstat_symbol sym; - - if (image->pi_symbols == NULL) - return (NULL); - - sym.ps_name = NULL; - sym.ps_start = addr; - sym.ps_end = addr + 1; - - return (bsearch((void *) &sym, image->pi_symbols, - image->pi_symcount, sizeof(struct pmcstat_symbol), - pmcstat_symbol_compare)); -} - -/* - * Add the list of symbols in the given section to the list associated - * with the object. - */ -static void -pmcstat_image_add_symbols(struct pmcstat_image *image, Elf *e, - Elf_Scn *scn, GElf_Shdr *sh) -{ - int firsttime; - size_t n, newsyms, nshsyms, nfuncsyms; - struct pmcstat_symbol *symptr; - char *fnname; - GElf_Sym sym; - Elf_Data *data; - - if ((data = elf_getdata(scn, NULL)) == NULL) - return; - - /* - * Determine the number of functions named in this - * section. - */ - - nshsyms = sh->sh_size / sh->sh_entsize; - for (n = nfuncsyms = 0; n < nshsyms; n++) { - if (gelf_getsym(data, (int) n, &sym) != &sym) - return; - if (GELF_ST_TYPE(sym.st_info) == STT_FUNC) - nfuncsyms++; - } - - if (nfuncsyms == 0) - return; - - /* - * Allocate space for the new entries. - */ - firsttime = image->pi_symbols == NULL; - symptr = reallocarray(image->pi_symbols, - image->pi_symcount + nfuncsyms, sizeof(*symptr)); - if (symptr == image->pi_symbols) /* realloc() failed. */ - return; - image->pi_symbols = symptr; - - /* - * Append new symbols to the end of the current table. - */ - symptr += image->pi_symcount; - - for (n = newsyms = 0; n < nshsyms; n++) { - if (gelf_getsym(data, (int) n, &sym) != &sym) - return; - if (GELF_ST_TYPE(sym.st_info) != STT_FUNC) - continue; - if (sym.st_shndx == STN_UNDEF) - continue; - - if (!firsttime && pmcstat_symbol_search(image, sym.st_value)) - continue; /* We've seen this symbol already. */ - - if ((fnname = elf_strptr(e, sh->sh_link, sym.st_name)) - == NULL) - continue; -#ifdef __arm__ - /* Remove spurious ARM function name. */ - if (fnname[0] == '$' && - (fnname[1] == 'a' || fnname[1] == 't' || - fnname[1] == 'd') && - fnname[2] == '\0') - continue; -#endif - - symptr->ps_name = pmcstat_string_intern(fnname); - symptr->ps_start = sym.st_value - image->pi_vaddr; - symptr->ps_end = symptr->ps_start + sym.st_size; - symptr++; - - newsyms++; - } - - image->pi_symcount += newsyms; - if (image->pi_symcount == 0) - return; - - assert(newsyms <= nfuncsyms); - - /* - * Return space to the system if there were duplicates. - */ - if (newsyms < nfuncsyms) - image->pi_symbols = reallocarray(image->pi_symbols, - image->pi_symcount, sizeof(*symptr)); - - /* - * Keep the list of symbols sorted. - */ - qsort(image->pi_symbols, image->pi_symcount, sizeof(*symptr), - pmcstat_symbol_compare); - - /* - * Deal with function symbols that have a size of 'zero' by - * making them extend to the next higher address. These - * symbols are usually defined in assembly code. - */ - for (symptr = image->pi_symbols; - symptr < image->pi_symbols + (image->pi_symcount - 1); - symptr++) - if (symptr->ps_start == symptr->ps_end) - symptr->ps_end = (symptr+1)->ps_start; -} - -/* - * Examine an ELF file to determine the size of its text segment. - * Sets image->pi_type if anything conclusive can be determined about - * this image. - */ - -static void -pmcstat_image_get_elf_params(struct pmcstat_image *image) -{ - int fd; - size_t i, nph, nsh; - const char *path, *elfbase; - char *p, *endp; - uintfptr_t minva, maxva; - Elf *e; - Elf_Scn *scn; - GElf_Ehdr eh; - GElf_Phdr ph; - GElf_Shdr sh; - enum pmcstat_image_type image_type; - char buffer[PATH_MAX]; - - assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); - - image->pi_start = minva = ~(uintfptr_t) 0; - image->pi_end = maxva = (uintfptr_t) 0; - image->pi_type = image_type = PMCSTAT_IMAGE_INDETERMINABLE; - image->pi_isdynamic = 0; - image->pi_dynlinkerpath = NULL; - image->pi_vaddr = 0; - - path = pmcstat_string_unintern(image->pi_execpath); - assert(path != NULL); - - /* - * Look for kernel modules under FSROOT/KERNELPATH/NAME, - * and user mode executable objects under FSROOT/PATHNAME. - */ - if (image->pi_iskernelmodule) - (void) snprintf(buffer, sizeof(buffer), "%s%s/%s", - args.pa_fsroot, args.pa_kernel, path); - else - (void) snprintf(buffer, sizeof(buffer), "%s%s", - args.pa_fsroot, path); - - e = NULL; - if ((fd = open(buffer, O_RDONLY, 0)) < 0 || - (e = elf_begin(fd, ELF_C_READ, NULL)) == NULL || - (elf_kind(e) != ELF_K_ELF)) { - if (args.pa_verbosity >= 2) - warnx("WARNING: Cannot determine the type of \"%s\".", - buffer); - goto done; - } - - if (gelf_getehdr(e, &eh) != &eh) { - warnx( - "WARNING: Cannot retrieve the ELF Header for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - - if (eh.e_type != ET_EXEC && eh.e_type != ET_DYN && - !(image->pi_iskernelmodule && eh.e_type == ET_REL)) { - warnx("WARNING: \"%s\" is of an unsupported ELF type.", - buffer); - goto done; - } - - image_type = eh.e_ident[EI_CLASS] == ELFCLASS32 ? - PMCSTAT_IMAGE_ELF32 : PMCSTAT_IMAGE_ELF64; - - /* - * Determine the virtual address where an executable would be - * loaded. Additionally, for dynamically linked executables, - * save the pathname to the runtime linker. - */ - if (eh.e_type == ET_EXEC) { - if (elf_getphnum(e, &nph) == 0) { - warnx( -"WARNING: Could not determine the number of program headers in \"%s\": %s.", - buffer, - elf_errmsg(-1)); - goto done; - } - for (i = 0; i < eh.e_phnum; i++) { - if (gelf_getphdr(e, i, &ph) != &ph) { - warnx( -"WARNING: Retrieval of PHDR entry #%ju in \"%s\" failed: %s.", - (uintmax_t) i, buffer, elf_errmsg(-1)); - goto done; - } - switch (ph.p_type) { - case PT_DYNAMIC: - image->pi_isdynamic = 1; - break; - case PT_INTERP: - if ((elfbase = elf_rawfile(e, NULL)) == NULL) { - warnx( -"WARNING: Cannot retrieve the interpreter for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - image->pi_dynlinkerpath = - pmcstat_string_intern(elfbase + - ph.p_offset); - break; - case PT_LOAD: - if ((ph.p_flags & PF_X) != 0 && - (ph.p_offset & (-ph.p_align)) == 0) - image->pi_vaddr = ph.p_vaddr & (-ph.p_align); - break; - } - } - } - - /* - * Get the min and max VA associated with this ELF object. - */ - if (elf_getshnum(e, &nsh) == 0) { - warnx( -"WARNING: Could not determine the number of sections for \"%s\": %s.", - buffer, elf_errmsg(-1)); - goto done; - } - - for (i = 0; i < nsh; i++) { - if ((scn = elf_getscn(e, i)) == NULL || - gelf_getshdr(scn, &sh) != &sh) { - warnx( -"WARNING: Could not retrieve section header #%ju in \"%s\": %s.", - (uintmax_t) i, buffer, elf_errmsg(-1)); - goto done; - } - if (sh.sh_flags & SHF_EXECINSTR) { - minva = min(minva, sh.sh_addr); - maxva = max(maxva, sh.sh_addr + sh.sh_size); - } - if (sh.sh_type == SHT_SYMTAB || sh.sh_type == SHT_DYNSYM) - pmcstat_image_add_symbols(image, e, scn, &sh); - } - - image->pi_start = minva; - image->pi_end = maxva; - image->pi_type = image_type; - image->pi_fullpath = pmcstat_string_intern(buffer); - - /* Build display name - */ - endp = buffer; - for (p = buffer; *p; p++) - if (*p == '/') - endp = p+1; - image->pi_name = pmcstat_string_intern(endp); - - done: - (void) elf_end(e); - if (fd >= 0) - (void) close(fd); - return; -} - -/* - * Given an image descriptor, determine whether it is an ELF, or AOUT. - * If no handler claims the image, set its type to 'INDETERMINABLE'. - */ - -void -pmcstat_image_determine_type(struct pmcstat_image *image) -{ - assert(image->pi_type == PMCSTAT_IMAGE_UNKNOWN); - - /* Try each kind of handler in turn */ - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_elf_params(image); - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_aout_params(image); - - /* - * Otherwise, remember that we tried to determine - * the object's type and had failed. - */ - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - image->pi_type = PMCSTAT_IMAGE_INDETERMINABLE; -} - -/* - * Locate an image descriptor given an interned path, adding a fresh - * descriptor to the cache if necessary. This function also finds a - * suitable name for this image's sample file. - * - * We defer filling in the file format specific parts of the image - * structure till the time we actually see a sample that would fall - * into this image. - */ - -static struct pmcstat_image * -pmcstat_image_from_path(pmcstat_interned_string internedpath, - int iskernelmodule) -{ - int hash; - struct pmcstat_image *pi; - - hash = pmcstat_string_lookup_hash(internedpath); - - /* First, look for an existing entry. */ - LIST_FOREACH(pi, &pmcstat_image_hash[hash], pi_next) - if (pi->pi_execpath == internedpath && - pi->pi_iskernelmodule == iskernelmodule) - return (pi); - - /* - * Allocate a new entry and place it at the head of the hash - * and LRU lists. - */ - pi = malloc(sizeof(*pi)); - if (pi == NULL) - return (NULL); - - pi->pi_type = PMCSTAT_IMAGE_UNKNOWN; - pi->pi_execpath = internedpath; - pi->pi_start = ~0; - pi->pi_end = 0; - pi->pi_entry = 0; - pi->pi_vaddr = 0; - pi->pi_isdynamic = 0; - pi->pi_iskernelmodule = iskernelmodule; - pi->pi_dynlinkerpath = NULL; - pi->pi_symbols = NULL; - pi->pi_symcount = 0; - pi->pi_addr2line = NULL; - - if (plugins[args.pa_pplugin].pl_initimage != NULL) - plugins[args.pa_pplugin].pl_initimage(pi); - if (plugins[args.pa_plugin].pl_initimage != NULL) - plugins[args.pa_plugin].pl_initimage(pi); - - LIST_INSERT_HEAD(&pmcstat_image_hash[hash], pi, pi_next); - - return (pi); -} - -/* - * Record the fact that PC values from 'start' to 'end' come from - * image 'image'. - */ - -static void -pmcstat_image_link(struct pmcstat_process *pp, struct pmcstat_image *image, - uintfptr_t start) -{ - struct pmcstat_pcmap *pcm, *pcmnew; - uintfptr_t offset; - - assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN && - image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE); - - if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) - err(EX_OSERR, "ERROR: Cannot create a map entry"); - - /* - * Adjust the map entry to only cover the text portion - * of the object. - */ - - offset = start - image->pi_vaddr; - pcmnew->ppm_lowpc = image->pi_start + offset; - pcmnew->ppm_highpc = image->pi_end + offset; - pcmnew->ppm_image = image; - - assert(pcmnew->ppm_lowpc < pcmnew->ppm_highpc); - - /* Overlapped mmap()'s are assumed to never occur. */ - TAILQ_FOREACH(pcm, &pp->pp_map, ppm_next) - if (pcm->ppm_lowpc >= pcmnew->ppm_highpc) - break; - - if (pcm == NULL) - TAILQ_INSERT_TAIL(&pp->pp_map, pcmnew, ppm_next); - else - TAILQ_INSERT_BEFORE(pcm, pcmnew, ppm_next); -} - -/* - * Unmap images in the range [start..end) associated with process - * 'pp'. - */ - -static void -pmcstat_image_unmap(struct pmcstat_process *pp, uintfptr_t start, - uintfptr_t end) -{ - struct pmcstat_pcmap *pcm, *pcmtmp, *pcmnew; - - assert(pp != NULL); - assert(start < end); - - /* - * Cases: - * - we could have the range completely in the middle of an - * existing pcmap; in this case we have to split the pcmap - * structure into two (i.e., generate a 'hole'). - * - we could have the range covering multiple pcmaps; these - * will have to be removed. - * - we could have either 'start' or 'end' falling in the - * middle of a pcmap; in this case shorten the entry. - */ - TAILQ_FOREACH_SAFE(pcm, &pp->pp_map, ppm_next, pcmtmp) { - assert(pcm->ppm_lowpc < pcm->ppm_highpc); - if (pcm->ppm_highpc <= start) - continue; - if (pcm->ppm_lowpc >= end) - return; - if (pcm->ppm_lowpc >= start && pcm->ppm_highpc <= end) { - /* - * The current pcmap is completely inside the - * unmapped range: remove it entirely. - */ - TAILQ_REMOVE(&pp->pp_map, pcm, ppm_next); - free(pcm); - } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc > end) { - /* - * Split this pcmap into two; curtail the - * current map to end at [start-1], and start - * the new one at [end]. - */ - if ((pcmnew = malloc(sizeof(*pcmnew))) == NULL) - err(EX_OSERR, - "ERROR: Cannot split a map entry"); - - pcmnew->ppm_image = pcm->ppm_image; - - pcmnew->ppm_lowpc = end; - pcmnew->ppm_highpc = pcm->ppm_highpc; - - pcm->ppm_highpc = start; - - TAILQ_INSERT_AFTER(&pp->pp_map, pcm, pcmnew, ppm_next); - - return; - } else if (pcm->ppm_lowpc < start && pcm->ppm_highpc <= end) - pcm->ppm_highpc = start; - else if (pcm->ppm_lowpc >= start && pcm->ppm_highpc > end) - pcm->ppm_lowpc = end; - else - assert(0); - } -} - -/* * Resolve file name and line number for the given address. */ int pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr, char *sourcefile, size_t sourcefile_len, unsigned *sourceline, char *funcname, size_t funcname_len) { static int addr2line_warn = 0; char *sep, cmdline[PATH_MAX], imagepath[PATH_MAX]; unsigned l; int fd; if (image->pi_addr2line == NULL) { /* Try default debug file location. */ snprintf(imagepath, sizeof(imagepath), "/usr/lib/debug/%s%s.debug", args.pa_fsroot, pmcstat_string_unintern(image->pi_fullpath)); fd = open(imagepath, O_RDONLY); if (fd < 0) { /* Old kernel symbol path. */ snprintf(imagepath, sizeof(imagepath), "%s%s.symbols", args.pa_fsroot, pmcstat_string_unintern(image->pi_fullpath)); fd = open(imagepath, O_RDONLY); if (fd < 0) { snprintf(imagepath, sizeof(imagepath), "%s%s", args.pa_fsroot, pmcstat_string_unintern( image->pi_fullpath)); } } if (fd >= 0) close(fd); /* * New addr2line support recursive inline function with -i * but the format does not add a marker when no more entries * are available. */ snprintf(cmdline, sizeof(cmdline), "addr2line -Cfe \"%s\"", imagepath); image->pi_addr2line = popen(cmdline, "r+"); if (image->pi_addr2line == NULL) { if (!addr2line_warn) { addr2line_warn = 1; warnx( "WARNING: addr2line is needed for source code information." ); } return (0); } } if (feof(image->pi_addr2line) || ferror(image->pi_addr2line)) { warnx("WARNING: addr2line pipe error"); pclose(image->pi_addr2line); image->pi_addr2line = NULL; return (0); } fprintf(image->pi_addr2line, "%p\n", (void *)addr); if (fgets(funcname, funcname_len, image->pi_addr2line) == NULL) { warnx("WARNING: addr2line function name read error"); return (0); } sep = strchr(funcname, '\n'); if (sep != NULL) *sep = '\0'; if (fgets(sourcefile, sourcefile_len, image->pi_addr2line) == NULL) { warnx("WARNING: addr2line source file read error"); return (0); } sep = strchr(sourcefile, ':'); if (sep == NULL) { warnx("WARNING: addr2line source line separator missing"); return (0); } *sep = '\0'; l = atoi(sep+1); if (l == 0) return (0); *sourceline = l; return (1); } /* - * Add a {pmcid,name} mapping. - */ - -static void -pmcstat_pmcid_add(pmc_id_t pmcid, pmcstat_interned_string ps) -{ - struct pmcstat_pmcrecord *pr, *prm; - - /* Replace an existing name for the PMC. */ - prm = NULL; - LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) - if (pr->pr_pmcid == pmcid) { - pr->pr_pmcname = ps; - return; - } else if (pr->pr_pmcname == ps) - prm = pr; - - /* - * Otherwise, allocate a new descriptor and call the - * plugins hook. - */ - if ((pr = malloc(sizeof(*pr))) == NULL) - err(EX_OSERR, "ERROR: Cannot allocate pmc record"); - - pr->pr_pmcid = pmcid; - pr->pr_pmcname = ps; - pr->pr_pmcin = pmcstat_npmcs++; - pr->pr_samples = 0; - pr->pr_dubious_frames = 0; - pr->pr_merge = prm == NULL ? pr : prm; - - LIST_INSERT_HEAD(&pmcstat_pmcs, pr, pr_next); - - if (plugins[args.pa_pplugin].pl_newpmc != NULL) - plugins[args.pa_pplugin].pl_newpmc(ps, pr); - if (plugins[args.pa_plugin].pl_newpmc != NULL) - plugins[args.pa_plugin].pl_newpmc(ps, pr); -} - -/* * Given a pmcid in use, find its human-readable name. */ const char * pmcstat_pmcid_to_name(pmc_id_t pmcid) { struct pmcstat_pmcrecord *pr; LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) if (pr->pr_pmcid == pmcid) return (pmcstat_string_unintern(pr->pr_pmcname)); return NULL; } /* * Convert PMC index to name. */ const char * pmcstat_pmcindex_to_name(int pmcin) { struct pmcstat_pmcrecord *pr; LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) if (pr->pr_pmcin == pmcin) return pmcstat_string_unintern(pr->pr_pmcname); return NULL; } /* * Return PMC record with given index. */ struct pmcstat_pmcrecord * pmcstat_pmcindex_to_pmcr(int pmcin) { struct pmcstat_pmcrecord *pr; LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) if (pr->pr_pmcin == pmcin) return pr; return NULL; } /* - * Get PMC record by id, apply merge policy. - */ - -static struct pmcstat_pmcrecord * -pmcstat_lookup_pmcid(pmc_id_t pmcid) -{ - struct pmcstat_pmcrecord *pr; - - LIST_FOREACH(pr, &pmcstat_pmcs, pr_next) { - if (pr->pr_pmcid == pmcid) { - if (pmcstat_mergepmc) - return pr->pr_merge; - return pr; - } - } - - return NULL; -} - -/* - * Associate an AOUT image with a process. - */ - -static void -pmcstat_process_aout_exec(struct pmcstat_process *pp, - struct pmcstat_image *image, uintfptr_t entryaddr) -{ - (void) pp; - (void) image; - (void) entryaddr; - /* TODO Implement a.out handling */ -} - -/* - * Associate an ELF image with a process. - */ - -static void -pmcstat_process_elf_exec(struct pmcstat_process *pp, - struct pmcstat_image *image, uintfptr_t entryaddr) -{ - uintmax_t libstart; - struct pmcstat_image *rtldimage; - - assert(image->pi_type == PMCSTAT_IMAGE_ELF32 || - image->pi_type == PMCSTAT_IMAGE_ELF64); - - /* Create a map entry for the base executable. */ - pmcstat_image_link(pp, image, image->pi_vaddr); - - /* - * For dynamically linked executables we need to determine - * where the dynamic linker was mapped to for this process, - * Subsequent executable objects that are mapped in by the - * dynamic linker will be tracked by log events of type - * PMCLOG_TYPE_MAP_IN. - */ - - if (image->pi_isdynamic) { - - /* - * The runtime loader gets loaded just after the maximum - * possible heap address. Like so: - * - * [ TEXT DATA BSS HEAP -->*RTLD SHLIBS <--STACK] - * ^ ^ - * 0 VM_MAXUSER_ADDRESS - - * - * The exact address where the loader gets mapped in - * will vary according to the size of the executable - * and the limits on the size of the process'es data - * segment at the time of exec(). The entry address - * recorded at process exec time corresponds to the - * 'start' address inside the dynamic linker. From - * this we can figure out the address where the - * runtime loader's file object had been mapped to. - */ - rtldimage = pmcstat_image_from_path(image->pi_dynlinkerpath, 0); - if (rtldimage == NULL) { - warnx("WARNING: Cannot find image for \"%s\".", - pmcstat_string_unintern(image->pi_dynlinkerpath)); - pmcstat_stats.ps_exec_errors++; - return; - } - - if (rtldimage->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_get_elf_params(rtldimage); - - if (rtldimage->pi_type != PMCSTAT_IMAGE_ELF32 && - rtldimage->pi_type != PMCSTAT_IMAGE_ELF64) { - warnx("WARNING: rtld not an ELF object \"%s\".", - pmcstat_string_unintern(image->pi_dynlinkerpath)); - return; - } - - libstart = entryaddr - rtldimage->pi_entry; - pmcstat_image_link(pp, rtldimage, libstart); - } -} - -/* - * Find the process descriptor corresponding to a PID. If 'allocate' - * is zero, we return a NULL if a pid descriptor could not be found or - * a process descriptor process. If 'allocate' is non-zero, then we - * will attempt to allocate a fresh process descriptor. Zombie - * process descriptors are only removed if a fresh allocation for the - * same PID is requested. - */ - -static struct pmcstat_process * -pmcstat_process_lookup(pid_t pid, int allocate) -{ - uint32_t hash; - struct pmcstat_pcmap *ppm, *ppmtmp; - struct pmcstat_process *pp, *pptmp; - - hash = (uint32_t) pid & PMCSTAT_HASH_MASK; /* simplicity wins */ - - LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[hash], pp_next, pptmp) - if (pp->pp_pid == pid) { - /* Found a descriptor, check and process zombies */ - if (allocate && pp->pp_isactive == 0) { - /* remove maps */ - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, - ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, - ppm_next); - free(ppm); - } - /* remove process entry */ - LIST_REMOVE(pp, pp_next); - free(pp); - break; - } - return (pp); - } - - if (!allocate) - return (NULL); - - if ((pp = malloc(sizeof(*pp))) == NULL) - err(EX_OSERR, "ERROR: Cannot allocate pid descriptor"); - - pp->pp_pid = pid; - pp->pp_isactive = 1; - - TAILQ_INIT(&pp->pp_map); - - LIST_INSERT_HEAD(&pmcstat_process_hash[hash], pp, pp_next); - return (pp); -} - -/* - * Associate an image and a process. - */ - -static void -pmcstat_process_exec(struct pmcstat_process *pp, - pmcstat_interned_string path, uintfptr_t entryaddr) -{ - struct pmcstat_image *image; - - if ((image = pmcstat_image_from_path(path, 0)) == NULL) { - pmcstat_stats.ps_exec_errors++; - return; - } - - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); - - assert(image->pi_type != PMCSTAT_IMAGE_UNKNOWN); - - switch (image->pi_type) { - case PMCSTAT_IMAGE_ELF32: - case PMCSTAT_IMAGE_ELF64: - pmcstat_stats.ps_exec_elf++; - pmcstat_process_elf_exec(pp, image, entryaddr); - break; - - case PMCSTAT_IMAGE_AOUT: - pmcstat_stats.ps_exec_aout++; - pmcstat_process_aout_exec(pp, image, entryaddr); - break; - - case PMCSTAT_IMAGE_INDETERMINABLE: - pmcstat_stats.ps_exec_indeterminable++; - break; - - default: - err(EX_SOFTWARE, - "ERROR: Unsupported executable type for \"%s\"", - pmcstat_string_unintern(path)); - } -} - - -/* - * Find the map entry associated with process 'p' at PC value 'pc'. - */ - -struct pmcstat_pcmap * -pmcstat_process_find_map(struct pmcstat_process *p, uintfptr_t pc) -{ - struct pmcstat_pcmap *ppm; - - TAILQ_FOREACH(ppm, &p->pp_map, ppm_next) { - if (pc >= ppm->ppm_lowpc && pc < ppm->ppm_highpc) - return (ppm); - if (pc < ppm->ppm_lowpc) - return (NULL); - } - - return (NULL); -} - -/* - * Convert a hwpmc(4) log to profile information. A system-wide - * callgraph is generated if FLAG_DO_CALLGRAPHS is set. gmon.out - * files usable by gprof(1) are created if FLAG_DO_GPROF is set. - */ -static int -pmcstat_analyze_log(void) -{ - uint32_t cpu, cpuflags; - uintfptr_t pc; - pid_t pid; - struct pmcstat_image *image; - struct pmcstat_process *pp, *ppnew; - struct pmcstat_pcmap *ppm, *ppmtmp; - struct pmclog_ev ev; - struct pmcstat_pmcrecord *pmcr; - pmcstat_interned_string image_path; - - assert(args.pa_flags & FLAG_DO_ANALYSIS); - - if (elf_version(EV_CURRENT) == EV_NONE) - err(EX_UNAVAILABLE, "Elf library initialization failed"); - - while (pmclog_read(args.pa_logparser, &ev) == 0) { - assert(ev.pl_state == PMCLOG_OK); - - switch (ev.pl_type) { - case PMCLOG_TYPE_INITIALIZE: - if ((ev.pl_u.pl_i.pl_version & 0xFF000000) != - PMC_VERSION_MAJOR << 24 && args.pa_verbosity > 0) - warnx( -"WARNING: Log version 0x%x does not match compiled version 0x%x.", - ev.pl_u.pl_i.pl_version, PMC_VERSION_MAJOR); - break; - - case PMCLOG_TYPE_MAP_IN: - /* - * Introduce an address range mapping for a - * userland process or the kernel (pid == -1). - * - * We always allocate a process descriptor so - * that subsequent samples seen for this - * address range are mapped to the current - * object being mapped in. - */ - pid = ev.pl_u.pl_mi.pl_pid; - if (pid == -1) - pp = pmcstat_kernproc; - else - pp = pmcstat_process_lookup(pid, - PMCSTAT_ALLOCATE); - - assert(pp != NULL); - - image_path = pmcstat_string_intern(ev.pl_u.pl_mi. - pl_pathname); - image = pmcstat_image_from_path(image_path, pid == -1); - if (image->pi_type == PMCSTAT_IMAGE_UNKNOWN) - pmcstat_image_determine_type(image); - if (image->pi_type != PMCSTAT_IMAGE_INDETERMINABLE) - pmcstat_image_link(pp, image, - ev.pl_u.pl_mi.pl_start); - break; - - case PMCLOG_TYPE_MAP_OUT: - /* - * Remove an address map. - */ - pid = ev.pl_u.pl_mo.pl_pid; - if (pid == -1) - pp = pmcstat_kernproc; - else - pp = pmcstat_process_lookup(pid, 0); - - if (pp == NULL) /* unknown process */ - break; - - pmcstat_image_unmap(pp, ev.pl_u.pl_mo.pl_start, - ev.pl_u.pl_mo.pl_end); - break; - - case PMCLOG_TYPE_PCSAMPLE: - /* - * Note: the `PCSAMPLE' log entry is not - * generated by hpwmc(4) after version 2. - */ - - /* - * We bring in the gmon file for the image - * currently associated with the PMC & pid - * pair and increment the appropriate entry - * bin inside this. - */ - pmcstat_stats.ps_samples_total++; - ps_samples_period++; - - pc = ev.pl_u.pl_s.pl_pc; - pp = pmcstat_process_lookup(ev.pl_u.pl_s.pl_pid, - PMCSTAT_ALLOCATE); - - /* Get PMC record. */ - pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_s.pl_pmcid); - assert(pmcr != NULL); - pmcr->pr_samples++; - - /* - * Call the plugins processing - * TODO: move pmcstat_process_find_map inside plugins - */ - - if (plugins[args.pa_pplugin].pl_process != NULL) - plugins[args.pa_pplugin].pl_process( - pp, pmcr, 1, &pc, - pmcstat_process_find_map(pp, pc) != NULL, 0); - plugins[args.pa_plugin].pl_process( - pp, pmcr, 1, &pc, - pmcstat_process_find_map(pp, pc) != NULL, 0); - break; - - case PMCLOG_TYPE_CALLCHAIN: - pmcstat_stats.ps_samples_total++; - ps_samples_period++; - - cpuflags = ev.pl_u.pl_cc.pl_cpuflags; - cpu = PMC_CALLCHAIN_CPUFLAGS_TO_CPU(cpuflags); - - /* Filter on the CPU id. */ - if (!CPU_ISSET(cpu, &(args.pa_cpumask))) { - pmcstat_stats.ps_samples_skipped++; - break; - } - - pp = pmcstat_process_lookup(ev.pl_u.pl_cc.pl_pid, - PMCSTAT_ALLOCATE); - - /* Get PMC record. */ - pmcr = pmcstat_lookup_pmcid(ev.pl_u.pl_cc.pl_pmcid); - assert(pmcr != NULL); - pmcr->pr_samples++; - - /* - * Call the plugins processing - */ - - if (plugins[args.pa_pplugin].pl_process != NULL) - plugins[args.pa_pplugin].pl_process( - pp, pmcr, - ev.pl_u.pl_cc.pl_npc, - ev.pl_u.pl_cc.pl_pc, - PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), - cpu); - plugins[args.pa_plugin].pl_process( - pp, pmcr, - ev.pl_u.pl_cc.pl_npc, - ev.pl_u.pl_cc.pl_pc, - PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(cpuflags), - cpu); - break; - - case PMCLOG_TYPE_PMCALLOCATE: - /* - * Record the association pmc id between this - * PMC and its name. - */ - pmcstat_pmcid_add(ev.pl_u.pl_a.pl_pmcid, - pmcstat_string_intern(ev.pl_u.pl_a.pl_evname)); - break; - - case PMCLOG_TYPE_PMCALLOCATEDYN: - /* - * Record the association pmc id between this - * PMC and its name. - */ - pmcstat_pmcid_add(ev.pl_u.pl_ad.pl_pmcid, - pmcstat_string_intern(ev.pl_u.pl_ad.pl_evname)); - break; - - case PMCLOG_TYPE_PROCEXEC: - - /* - * Change the executable image associated with - * a process. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_x.pl_pid, - PMCSTAT_ALLOCATE); - - /* delete the current process map */ - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); - free(ppm); - } - - /* - * Associate this process image. - */ - image_path = pmcstat_string_intern( - ev.pl_u.pl_x.pl_pathname); - assert(image_path != NULL); - pmcstat_process_exec(pp, image_path, - ev.pl_u.pl_x.pl_entryaddr); - break; - - case PMCLOG_TYPE_PROCEXIT: - - /* - * Due to the way the log is generated, the - * last few samples corresponding to a process - * may appear in the log after the process - * exit event is recorded. Thus we keep the - * process' descriptor and associated data - * structures around, but mark the process as - * having exited. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_e.pl_pid, 0); - if (pp == NULL) - break; - pp->pp_isactive = 0; /* mark as a zombie */ - break; - - case PMCLOG_TYPE_SYSEXIT: - pp = pmcstat_process_lookup(ev.pl_u.pl_se.pl_pid, 0); - if (pp == NULL) - break; - pp->pp_isactive = 0; /* make a zombie */ - break; - - case PMCLOG_TYPE_PROCFORK: - - /* - * Allocate a process descriptor for the new - * (child) process. - */ - ppnew = - pmcstat_process_lookup(ev.pl_u.pl_f.pl_newpid, - PMCSTAT_ALLOCATE); - - /* - * If we had been tracking the parent, clone - * its address maps. - */ - pp = pmcstat_process_lookup(ev.pl_u.pl_f.pl_oldpid, 0); - if (pp == NULL) - break; - TAILQ_FOREACH(ppm, &pp->pp_map, ppm_next) - pmcstat_image_link(ppnew, ppm->ppm_image, - ppm->ppm_lowpc); - break; - - default: /* other types of entries are not relevant */ - break; - } - } - - if (ev.pl_state == PMCLOG_EOF) - return (PMCSTAT_FINISHED); - else if (ev.pl_state == PMCLOG_REQUIRE_DATA) - return (PMCSTAT_RUNNING); - - err(EX_DATAERR, - "ERROR: event parsing failed (record %jd, offset 0x%jx)", - (uintmax_t) ev.pl_count + 1, ev.pl_offset); -} - -/* * Print log entries as text. */ static int pmcstat_print_log(void) { struct pmclog_ev ev; uint32_t npc; while (pmclog_read(args.pa_logparser, &ev) == 0) { assert(ev.pl_state == PMCLOG_OK); switch (ev.pl_type) { case PMCLOG_TYPE_CALLCHAIN: PMCSTAT_PRINT_ENTRY("callchain", "%d 0x%x %d %d %c", ev.pl_u.pl_cc.pl_pid, ev.pl_u.pl_cc.pl_pmcid, PMC_CALLCHAIN_CPUFLAGS_TO_CPU(ev.pl_u.pl_cc. \ pl_cpuflags), ev.pl_u.pl_cc.pl_npc, PMC_CALLCHAIN_CPUFLAGS_TO_USERMODE(ev.pl_u.pl_cc.\ pl_cpuflags) ? 'u' : 's'); for (npc = 0; npc < ev.pl_u.pl_cc.pl_npc; npc++) PMCSTAT_PRINT_ENTRY("...", "%p", (void *) ev.pl_u.pl_cc.pl_pc[npc]); break; case PMCLOG_TYPE_CLOSELOG: PMCSTAT_PRINT_ENTRY("closelog",); break; case PMCLOG_TYPE_DROPNOTIFY: PMCSTAT_PRINT_ENTRY("drop",); break; case PMCLOG_TYPE_INITIALIZE: PMCSTAT_PRINT_ENTRY("initlog","0x%x \"%s\"", ev.pl_u.pl_i.pl_version, pmc_name_of_cputype(ev.pl_u.pl_i.pl_arch)); if ((ev.pl_u.pl_i.pl_version & 0xFF000000) != PMC_VERSION_MAJOR << 24 && args.pa_verbosity > 0) warnx( "WARNING: Log version 0x%x != expected version 0x%x.", ev.pl_u.pl_i.pl_version, PMC_VERSION); break; case PMCLOG_TYPE_MAP_IN: PMCSTAT_PRINT_ENTRY("map-in","%d %p \"%s\"", ev.pl_u.pl_mi.pl_pid, (void *) ev.pl_u.pl_mi.pl_start, ev.pl_u.pl_mi.pl_pathname); break; case PMCLOG_TYPE_MAP_OUT: PMCSTAT_PRINT_ENTRY("map-out","%d %p %p", ev.pl_u.pl_mo.pl_pid, (void *) ev.pl_u.pl_mo.pl_start, (void *) ev.pl_u.pl_mo.pl_end); break; case PMCLOG_TYPE_PCSAMPLE: PMCSTAT_PRINT_ENTRY("sample","0x%x %d %p %c", ev.pl_u.pl_s.pl_pmcid, ev.pl_u.pl_s.pl_pid, (void *) ev.pl_u.pl_s.pl_pc, ev.pl_u.pl_s.pl_usermode ? 'u' : 's'); break; case PMCLOG_TYPE_PMCALLOCATE: PMCSTAT_PRINT_ENTRY("allocate","0x%x \"%s\" 0x%x", ev.pl_u.pl_a.pl_pmcid, ev.pl_u.pl_a.pl_evname, ev.pl_u.pl_a.pl_flags); break; case PMCLOG_TYPE_PMCALLOCATEDYN: PMCSTAT_PRINT_ENTRY("allocatedyn","0x%x \"%s\" 0x%x", ev.pl_u.pl_ad.pl_pmcid, ev.pl_u.pl_ad.pl_evname, ev.pl_u.pl_ad.pl_flags); break; case PMCLOG_TYPE_PMCATTACH: PMCSTAT_PRINT_ENTRY("attach","0x%x %d \"%s\"", ev.pl_u.pl_t.pl_pmcid, ev.pl_u.pl_t.pl_pid, ev.pl_u.pl_t.pl_pathname); break; case PMCLOG_TYPE_PMCDETACH: PMCSTAT_PRINT_ENTRY("detach","0x%x %d", ev.pl_u.pl_d.pl_pmcid, ev.pl_u.pl_d.pl_pid); break; case PMCLOG_TYPE_PROCCSW: PMCSTAT_PRINT_ENTRY("cswval","0x%x %d %jd", ev.pl_u.pl_c.pl_pmcid, ev.pl_u.pl_c.pl_pid, ev.pl_u.pl_c.pl_value); break; case PMCLOG_TYPE_PROCEXEC: PMCSTAT_PRINT_ENTRY("exec","0x%x %d %p \"%s\"", ev.pl_u.pl_x.pl_pmcid, ev.pl_u.pl_x.pl_pid, (void *) ev.pl_u.pl_x.pl_entryaddr, ev.pl_u.pl_x.pl_pathname); break; case PMCLOG_TYPE_PROCEXIT: PMCSTAT_PRINT_ENTRY("exitval","0x%x %d %jd", ev.pl_u.pl_e.pl_pmcid, ev.pl_u.pl_e.pl_pid, ev.pl_u.pl_e.pl_value); break; case PMCLOG_TYPE_PROCFORK: PMCSTAT_PRINT_ENTRY("fork","%d %d", ev.pl_u.pl_f.pl_oldpid, ev.pl_u.pl_f.pl_newpid); break; case PMCLOG_TYPE_USERDATA: PMCSTAT_PRINT_ENTRY("userdata","0x%x", ev.pl_u.pl_u.pl_userdata); break; case PMCLOG_TYPE_SYSEXIT: PMCSTAT_PRINT_ENTRY("exit","%d", ev.pl_u.pl_se.pl_pid); break; default: fprintf(args.pa_printfile, "unknown event (type %d).\n", ev.pl_type); } } if (ev.pl_state == PMCLOG_EOF) return (PMCSTAT_FINISHED); - else if (ev.pl_state == PMCLOG_REQUIRE_DATA) + else if (ev.pl_state == PMCLOG_REQUIRE_DATA) return (PMCSTAT_RUNNING); errx(EX_DATAERR, "ERROR: event parsing failed (record %jd, offset 0x%jx).", (uintmax_t) ev.pl_count + 1, ev.pl_offset); /*NOTREACHED*/ } /* * Public Interfaces. */ /* - * Close a logfile, after first flushing all in-module queued data. - */ - -int -pmcstat_close_log(void) -{ - /* If a local logfile is configured ask the kernel to stop - * and flush data. Kernel will close the file when data is flushed - * so keep the status to EXITING. - */ - if (args.pa_logfd != -1) { - if (pmc_close_logfile() < 0) - err(EX_OSERR, "ERROR: logging failed"); - } - - return (args.pa_flags & FLAG_HAS_PIPE ? PMCSTAT_EXITING : - PMCSTAT_FINISHED); -} - - - -/* - * Open a log file, for reading or writing. - * - * The function returns the fd of a successfully opened log or -1 in - * case of failure. - */ - -int -pmcstat_open_log(const char *path, int mode) -{ - int error, fd, cfd; - size_t hlen; - const char *p, *errstr; - struct addrinfo hints, *res, *res0; - char hostname[MAXHOSTNAMELEN]; - - errstr = NULL; - fd = -1; - - /* - * If 'path' is "-" then open one of stdin or stdout depending - * on the value of 'mode'. - * - * If 'path' contains a ':' and does not start with a '/' or '.', - * and is being opened for writing, treat it as a "host:port" - * specification and open a network socket. - * - * Otherwise, treat 'path' as a file name and open that. - */ - if (path[0] == '-' && path[1] == '\0') - fd = (mode == PMCSTAT_OPEN_FOR_READ) ? 0 : 1; - else if (path[0] != '/' && - path[0] != '.' && strchr(path, ':') != NULL) { - - p = strrchr(path, ':'); - hlen = p - path; - if (p == path || hlen >= sizeof(hostname)) { - errstr = strerror(EINVAL); - goto done; - } - - assert(hlen < sizeof(hostname)); - (void) strncpy(hostname, path, hlen); - hostname[hlen] = '\0'; - - (void) memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - if ((error = getaddrinfo(hostname, p+1, &hints, &res0)) != 0) { - errstr = gai_strerror(error); - goto done; - } - - fd = -1; - for (res = res0; res; res = res->ai_next) { - if ((fd = socket(res->ai_family, res->ai_socktype, - res->ai_protocol)) < 0) { - errstr = strerror(errno); - continue; - } - if (mode == PMCSTAT_OPEN_FOR_READ) { - if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) { - errstr = strerror(errno); - (void) close(fd); - fd = -1; - continue; - } - listen(fd, 1); - cfd = accept(fd, NULL, NULL); - (void) close(fd); - if (cfd < 0) { - errstr = strerror(errno); - fd = -1; - break; - } - fd = cfd; - } else { - if (connect(fd, res->ai_addr, res->ai_addrlen) < 0) { - errstr = strerror(errno); - (void) close(fd); - fd = -1; - continue; - } - } - errstr = NULL; - break; - } - freeaddrinfo(res0); - - } else if ((fd = open(path, mode == PMCSTAT_OPEN_FOR_READ ? - O_RDONLY : (O_WRONLY|O_CREAT|O_TRUNC), - S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0) - errstr = strerror(errno); - - done: - if (errstr) - errx(EX_OSERR, "ERROR: Cannot open \"%s\" for %s: %s.", path, - (mode == PMCSTAT_OPEN_FOR_READ ? "reading" : "writing"), - errstr); - - return (fd); -} - -/* * Process a log file in offline analysis mode. */ int pmcstat_process_log(void) { /* * If analysis has not been asked for, just print the log to * the current output file. */ if (args.pa_flags & FLAG_DO_PRINT) return (pmcstat_print_log()); else - return (pmcstat_analyze_log()); + return (pmcstat_analyze_log(&args, plugins, &pmcstat_stats, pmcstat_kernproc, + pmcstat_mergepmc, &pmcstat_npmcs, &ps_samples_period)); } /* * Refresh top display. */ static void pmcstat_refresh_top(void) { int v_attrs; float v; char pmcname[40]; struct pmcstat_pmcrecord *pmcpr; /* If in pause mode do not refresh display. */ if (pmcstat_pause) return; /* Wait until PMC pop in the log. */ pmcpr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); if (pmcpr == NULL) return; /* Format PMC name. */ if (pmcstat_mergepmc) snprintf(pmcname, sizeof(pmcname), "[%s]", pmcstat_string_unintern(pmcpr->pr_pmcname)); else snprintf(pmcname, sizeof(pmcname), "%s.%d", pmcstat_string_unintern(pmcpr->pr_pmcname), pmcstat_pmcinfilter); /* Format samples count. */ if (ps_samples_period > 0) v = (pmcpr->pr_samples * 100.0) / ps_samples_period; else v = 0.; v_attrs = PMCSTAT_ATTRPERCENT(v); PMCSTAT_PRINTBEGIN(); PMCSTAT_PRINTW("PMC: %s Samples: %u ", pmcname, pmcpr->pr_samples); PMCSTAT_ATTRON(v_attrs); PMCSTAT_PRINTW("(%.1f%%) ", v); PMCSTAT_ATTROFF(v_attrs); PMCSTAT_PRINTW(", %u unresolved\n\n", pmcpr->pr_dubious_frames); if (plugins[args.pa_plugin].pl_topdisplay != NULL) plugins[args.pa_plugin].pl_topdisplay(); PMCSTAT_PRINTEND(); } /* * Find the next pmc index to display. */ static void pmcstat_changefilter(void) { int pmcin; struct pmcstat_pmcrecord *pmcr; /* * Find the next merge target. */ if (pmcstat_mergepmc) { pmcin = pmcstat_pmcinfilter; do { pmcr = pmcstat_pmcindex_to_pmcr(pmcstat_pmcinfilter); if (pmcr == NULL || pmcr == pmcr->pr_merge) break; pmcstat_pmcinfilter++; if (pmcstat_pmcinfilter >= pmcstat_npmcs) pmcstat_pmcinfilter = 0; } while (pmcstat_pmcinfilter != pmcin); } } /* * Top mode keypress. */ int pmcstat_keypress_log(void) { int c, ret = 0; WINDOW *w; w = newwin(1, 0, 1, 0); c = wgetch(w); wprintw(w, "Key: %c => ", c); switch (c) { case 'c': wprintw(w, "enter mode 'd' or 'a' => "); c = wgetch(w); if (c == 'd') { args.pa_topmode = PMCSTAT_TOP_DELTA; wprintw(w, "switching to delta mode"); } else { args.pa_topmode = PMCSTAT_TOP_ACCUM; wprintw(w, "switching to accumulation mode"); } break; case 'm': pmcstat_mergepmc = !pmcstat_mergepmc; /* * Changing merge state require data reset. */ if (plugins[args.pa_plugin].pl_shutdown != NULL) plugins[args.pa_plugin].pl_shutdown(NULL); pmcstat_stats_reset(0); if (plugins[args.pa_plugin].pl_init != NULL) plugins[args.pa_plugin].pl_init(); /* Update filter to be on a merge target. */ pmcstat_changefilter(); wprintw(w, "merge PMC %s", pmcstat_mergepmc ? "on" : "off"); break; case 'n': /* Close current plugin. */ if (plugins[args.pa_plugin].pl_shutdown != NULL) plugins[args.pa_plugin].pl_shutdown(NULL); /* Find next top display available. */ do { args.pa_plugin++; if (plugins[args.pa_plugin].pl_name == NULL) args.pa_plugin = 0; } while (plugins[args.pa_plugin].pl_topdisplay == NULL); /* Open new plugin. */ pmcstat_stats_reset(0); if (plugins[args.pa_plugin].pl_init != NULL) plugins[args.pa_plugin].pl_init(); wprintw(w, "switching to plugin %s", plugins[args.pa_plugin].pl_name); break; case 'p': pmcstat_pmcinfilter++; if (pmcstat_pmcinfilter >= pmcstat_npmcs) pmcstat_pmcinfilter = 0; pmcstat_changefilter(); wprintw(w, "switching to PMC %s.%d", pmcstat_pmcindex_to_name(pmcstat_pmcinfilter), pmcstat_pmcinfilter); break; case ' ': pmcstat_pause = !pmcstat_pause; if (pmcstat_pause) wprintw(w, "pause => press space again to continue"); break; case 'q': wprintw(w, "exiting..."); ret = 1; break; default: if (plugins[args.pa_plugin].pl_topkeypress != NULL) - if (plugins[args.pa_plugin].pl_topkeypress(c, w)) + if (plugins[args.pa_plugin].pl_topkeypress(c, (void *)w)) ret = 1; } wrefresh(w); delwin(w); return ret; } /* * Top mode display. */ void pmcstat_display_log(void) { pmcstat_refresh_top(); /* Reset everythings if delta mode. */ if (args.pa_topmode == PMCSTAT_TOP_DELTA) { if (plugins[args.pa_plugin].pl_shutdown != NULL) plugins[args.pa_plugin].pl_shutdown(NULL); pmcstat_stats_reset(0); if (plugins[args.pa_plugin].pl_init != NULL) plugins[args.pa_plugin].pl_init(); } - } /* * Configure a plugins. */ void pmcstat_pluginconfigure_log(char *opt) { if (strncmp(opt, "threshold=", 10) == 0) { pmcstat_threshold = atof(opt+10); } else { if (plugins[args.pa_plugin].pl_configure != NULL) { if (!plugins[args.pa_plugin].pl_configure(opt)) err(EX_USAGE, "ERROR: unknown option <%s>.", opt); } } } -/* - * Initialize module. - */ - void -pmcstat_initialize_logging(void) +pmcstat_log_shutdown_logging(void) { - int i; - /* use a convenient format for 'ldd' output */ - if (setenv("LD_TRACE_LOADED_OBJECTS_FMT1","%o \"%p\" %x\n",1) != 0) - err(EX_OSERR, "ERROR: Cannot setenv"); - - /* Initialize hash tables */ - pmcstat_string_initialize(); - for (i = 0; i < PMCSTAT_NHASH; i++) { - LIST_INIT(&pmcstat_image_hash[i]); - LIST_INIT(&pmcstat_process_hash[i]); - } - - /* - * Create a fake 'process' entry for the kernel with pid -1. - * hwpmc(4) will subsequently inform us about where the kernel - * and any loaded kernel modules are mapped. - */ - if ((pmcstat_kernproc = pmcstat_process_lookup((pid_t) -1, - PMCSTAT_ALLOCATE)) == NULL) - err(EX_OSERR, "ERROR: Cannot initialize logging"); - - /* PMC count. */ - pmcstat_npmcs = 0; - - /* Merge PMC with same name. */ - pmcstat_mergepmc = args.pa_mergepmc; - - /* - * Initialize plugins - */ - - if (plugins[args.pa_pplugin].pl_init != NULL) - plugins[args.pa_pplugin].pl_init(); - if (plugins[args.pa_plugin].pl_init != NULL) - plugins[args.pa_plugin].pl_init(); + pmcstat_shutdown_logging(&args, plugins, &pmcstat_stats); } -/* - * Shutdown module. - */ - void -pmcstat_shutdown_logging(void) +pmcstat_log_initialize_logging(void) { - int i; - FILE *mf; - struct pmcstat_image *pi, *pitmp; - struct pmcstat_process *pp, *pptmp; - struct pmcstat_pcmap *ppm, *ppmtmp; - /* determine where to send the map file */ - mf = NULL; - if (args.pa_mapfilename != NULL) - mf = (strcmp(args.pa_mapfilename, "-") == 0) ? - args.pa_printfile : fopen(args.pa_mapfilename, "w"); - - if (mf == NULL && args.pa_flags & FLAG_DO_GPROF && - args.pa_verbosity >= 2) - mf = args.pa_printfile; - - if (mf) - (void) fprintf(mf, "MAP:\n"); - - /* - * Shutdown the plugins - */ - - if (plugins[args.pa_plugin].pl_shutdown != NULL) - plugins[args.pa_plugin].pl_shutdown(mf); - if (plugins[args.pa_pplugin].pl_shutdown != NULL) - plugins[args.pa_pplugin].pl_shutdown(mf); - - for (i = 0; i < PMCSTAT_NHASH; i++) { - LIST_FOREACH_SAFE(pi, &pmcstat_image_hash[i], pi_next, - pitmp) { - if (plugins[args.pa_plugin].pl_shutdownimage != NULL) - plugins[args.pa_plugin].pl_shutdownimage(pi); - if (plugins[args.pa_pplugin].pl_shutdownimage != NULL) - plugins[args.pa_pplugin].pl_shutdownimage(pi); - - free(pi->pi_symbols); - if (pi->pi_addr2line != NULL) - pclose(pi->pi_addr2line); - LIST_REMOVE(pi, pi_next); - free(pi); - } - - LIST_FOREACH_SAFE(pp, &pmcstat_process_hash[i], pp_next, - pptmp) { - TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { - TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); - free(ppm); - } - LIST_REMOVE(pp, pp_next); - free(pp); - } - } - - pmcstat_string_shutdown(); - - /* - * Print errors unless -q was specified. Print all statistics - * if verbosity > 1. - */ -#define PRINT(N,V) do { \ - if (pmcstat_stats.ps_##V || args.pa_verbosity >= 2) \ - (void) fprintf(args.pa_printfile, " %-40s %d\n",\ - N, pmcstat_stats.ps_##V); \ - } while (0) - - if (args.pa_verbosity >= 1 && (args.pa_flags & FLAG_DO_ANALYSIS)) { - (void) fprintf(args.pa_printfile, "CONVERSION STATISTICS:\n"); - PRINT("#exec/a.out", exec_aout); - PRINT("#exec/elf", exec_elf); - PRINT("#exec/unknown", exec_indeterminable); - PRINT("#exec handling errors", exec_errors); - PRINT("#samples/total", samples_total); - PRINT("#samples/unclaimed", samples_unknown_offset); - PRINT("#samples/unknown-object", samples_indeterminable); - PRINT("#samples/unknown-function", samples_unknown_function); - PRINT("#callchain/dubious-frames", callchain_dubious_frames); - } - - if (mf) - (void) fclose(mf); + pmcstat_initialize_logging(&pmcstat_kernproc, + &args, plugins, &pmcstat_npmcs, &pmcstat_mergepmc); } Index: head/usr.sbin/pmcstat/pmcstat_log.h =================================================================== --- head/usr.sbin/pmcstat/pmcstat_log.h (revision 324958) +++ head/usr.sbin/pmcstat/pmcstat_log.h (revision 324959) @@ -1,198 +1,57 @@ /*- * Copyright (c) 2005-2007, Joseph Koshy * Copyright (c) 2007 The FreeBSD Foundation * Copyright (c) 2009, Fabien Thomas * All rights reserved. * * Portions of this software were developed by A. Joseph Koshy under * sponsorship from the FreeBSD Foundation and Google, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _PMCSTAT_LOG_H_ #define _PMCSTAT_LOG_H_ -typedef const void *pmcstat_interned_string; +#include -/* - * A 'pmcstat_process' structure models processes. Each process is - * associated with a set of pmcstat_pcmap structures that map - * addresses inside it to executable objects. This set is implemented - * as a list, kept sorted in ascending order of mapped addresses. - * - * 'pp_pid' holds the pid of the process. When a process exits, the - * 'pp_isactive' field is set to zero, but the process structure is - * not immediately reclaimed because there may still be samples in the - * log for this process. - */ - -struct pmcstat_process { - LIST_ENTRY(pmcstat_process) pp_next; /* hash-next */ - pid_t pp_pid; /* associated pid */ - int pp_isactive; /* whether active */ - uintfptr_t pp_entryaddr; /* entry address */ - TAILQ_HEAD(,pmcstat_pcmap) pp_map; /* address range map */ -}; -extern LIST_HEAD(pmcstat_process_hash_list, pmcstat_process) pmcstat_process_hash[PMCSTAT_NHASH]; - -/* - * A 'pmcstat_image' structure describes an executable program on - * disk. 'pi_execpath' is a cookie representing the pathname of - * the executable. 'pi_start' and 'pi_end' are the least and greatest - * virtual addresses for the text segments in the executable. - * 'pi_gmonlist' contains a linked list of gmon.out files associated - * with this image. - */ - -enum pmcstat_image_type { - PMCSTAT_IMAGE_UNKNOWN = 0, /* never looked at the image */ - PMCSTAT_IMAGE_INDETERMINABLE, /* can't tell what the image is */ - PMCSTAT_IMAGE_ELF32, /* ELF 32 bit object */ - PMCSTAT_IMAGE_ELF64, /* ELF 64 bit object */ - PMCSTAT_IMAGE_AOUT /* AOUT object */ -}; - -struct pmcstat_image { - LIST_ENTRY(pmcstat_image) pi_next; /* hash link */ - pmcstat_interned_string pi_execpath; /* cookie */ - pmcstat_interned_string pi_samplename; /* sample path name */ - pmcstat_interned_string pi_fullpath; /* path to FS object */ - pmcstat_interned_string pi_name; /* display name */ - - enum pmcstat_image_type pi_type; /* executable type */ - - /* - * Executables have pi_start and pi_end; these are zero - * for shared libraries. - */ - uintfptr_t pi_start; /* start address (inclusive) */ - uintfptr_t pi_end; /* end address (exclusive) */ - uintfptr_t pi_entry; /* entry address */ - uintfptr_t pi_vaddr; /* virtual address where loaded */ - int pi_isdynamic; /* whether a dynamic object */ - int pi_iskernelmodule; - pmcstat_interned_string pi_dynlinkerpath; /* path in .interp */ - - /* All symbols associated with this object. */ - struct pmcstat_symbol *pi_symbols; - size_t pi_symcount; - - /* Handle to addr2line for this image. */ - FILE *pi_addr2line; - - /* - * Plugins private data - */ - - /* gprof: - * An image can be associated with one or more gmon.out files; - * one per PMC. - */ - LIST_HEAD(,pmcstat_gmonfile) pi_gmlist; -}; -extern LIST_HEAD(pmcstat_image_hash_list, pmcstat_image) pmcstat_image_hash[PMCSTAT_NHASH]; - -/* - * A 'pmcstat_pcmap' structure maps a virtual address range to an - * underlying 'pmcstat_image' descriptor. - */ -struct pmcstat_pcmap { - TAILQ_ENTRY(pmcstat_pcmap) ppm_next; - uintfptr_t ppm_lowpc; - uintfptr_t ppm_highpc; - struct pmcstat_image *ppm_image; -}; - -/* - * Each function symbol tracked by pmcstat(8). - */ - -struct pmcstat_symbol { - pmcstat_interned_string ps_name; - uint64_t ps_start; - uint64_t ps_end; -}; - -/* - * 'pmcstat_pmcrecord' is a mapping from PMC ids to human-readable - * names. - */ - -struct pmcstat_pmcrecord { - LIST_ENTRY(pmcstat_pmcrecord) pr_next; - pmc_id_t pr_pmcid; - int pr_pmcin; - pmcstat_interned_string pr_pmcname; - int pr_samples; - int pr_dubious_frames; - struct pmcstat_pmcrecord *pr_merge; -}; -extern LIST_HEAD(pmcstat_pmcs, pmcstat_pmcrecord) pmcstat_pmcs; /* PMC list */ - -/* - * Misc. statistics - */ -struct pmcstat_stats { - int ps_exec_aout; /* # a.out executables seen */ - int ps_exec_elf; /* # elf executables seen */ - int ps_exec_errors; /* # errors processing executables */ - int ps_exec_indeterminable; /* # unknown executables seen */ - int ps_samples_total; /* total number of samples processed */ - int ps_samples_skipped; /* #samples filtered out for any reason */ - int ps_samples_unknown_offset; /* #samples of rank 0 not in a map */ - int ps_samples_indeterminable; /* #samples in indeterminable images */ - int ps_samples_unknown_function;/* #samples with unknown function at offset */ - int ps_callchain_dubious_frames;/* #dubious frame pointers seen */ -}; extern struct pmcstat_stats pmcstat_stats; /* statistics */ - extern struct pmcstat_process *pmcstat_kernproc; /* kernel 'process' */ - extern int pmcstat_npmcs; /* PMC count. */ /* * Top mode global options. */ extern float pmcstat_threshold; /* Threshold to filter node. */ extern int pmcstat_pmcinfilter; /* PMC index displayed. */ /* Function prototypes */ const char *pmcstat_pmcid_to_name(pmc_id_t _pmcid); const char *pmcstat_pmcindex_to_name(int pmcin); struct pmcstat_pmcrecord *pmcstat_pmcindex_to_pmcr(int pmcin); -struct pmcstat_pcmap *pmcstat_process_find_map(struct pmcstat_process *_p, - uintfptr_t _pc); -struct pmcstat_symbol *pmcstat_symbol_search(struct pmcstat_image *image, - uintfptr_t addr); -const char *pmcstat_string_unintern(pmcstat_interned_string _is); -pmcstat_interned_string pmcstat_string_intern(const char *_s); -void pmcstat_image_determine_type(struct pmcstat_image *_image); -pmcstat_interned_string pmcstat_string_lookup(const char *_s); int pmcstat_image_addr2line(struct pmcstat_image *image, uintfptr_t addr, char *sourcefile, size_t sourcefile_len, unsigned *sourceline, char *funcname, size_t funcname_len); #endif /* _PMCSTAT_LOG_H_ */ -