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sys/sys/umtxvar.h
- This file was added.
/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
* | |||||
* Copyright (c) 2002, Jeffrey Roberson <jeff@freebsd.org> | |||||
* 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 unmodified, 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 ``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 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 _SYS_UMTXVAR_H_ | |||||
#define _SYS_UMTXVAR_H_ | |||||
#ifdef _KERNEL | |||||
kib: Please do not do this. We prefer to not nest includes. Consumer should include sys/umtx.h… | |||||
/* | |||||
* The umtx_key structure is used by both the Linux futex code and the | |||||
* umtx implementation to map userland addresses to unique keys. | |||||
*/ | |||||
enum { | |||||
TYPE_SIMPLE_WAIT, | |||||
TYPE_CV, | |||||
TYPE_SEM, | |||||
TYPE_SIMPLE_LOCK, | |||||
TYPE_NORMAL_UMUTEX, | |||||
TYPE_PI_UMUTEX, | |||||
TYPE_PP_UMUTEX, | |||||
TYPE_RWLOCK, | |||||
TYPE_FUTEX, | |||||
TYPE_SHM, | |||||
TYPE_PI_ROBUST_UMUTEX, | |||||
TYPE_PP_ROBUST_UMUTEX, | |||||
}; | |||||
/* Key to represent a unique userland synchronous object */ | |||||
struct umtx_key { | |||||
int hash; | |||||
int type; | |||||
int shared; | |||||
union { | |||||
struct { | |||||
struct vm_object *object; | |||||
uintptr_t offset; | |||||
} shared; | |||||
struct { | |||||
struct vmspace *vs; | |||||
uintptr_t addr; | |||||
} private; | |||||
struct { | |||||
void *a; | |||||
uintptr_t b; | |||||
} both; | |||||
} info; | |||||
}; | |||||
#define THREAD_SHARE 0 | |||||
#define PROCESS_SHARE 1 | |||||
#define AUTO_SHARE 2 | |||||
struct thread; | |||||
static inline int | |||||
umtx_key_match(const struct umtx_key *k1, const struct umtx_key *k2) | |||||
{ | |||||
return (k1->type == k2->type && | |||||
k1->info.both.a == k2->info.both.a && | |||||
k1->info.both.b == k2->info.both.b); | |||||
} | |||||
Not Done Inline ActionsWhile there, fix style. Indent should be +4 spaces for continuation lines. kib: While there, fix style. Indent should be +4 spaces for continuation lines. | |||||
int umtx_copyin_timeout(const void *, struct timespec *); | |||||
void umtx_exec(struct proc *p); | |||||
int umtx_key_get(const void *, int, int, struct umtx_key *); | |||||
void umtx_key_release(struct umtx_key *); | |||||
struct umtx_q *umtxq_alloc(void); | |||||
void umtxq_free(struct umtx_q *); | |||||
int kern_umtx_wake(struct thread *, void *, int, int); | |||||
void umtx_pi_adjust(struct thread *, u_char); | |||||
void umtx_thread_init(struct thread *); | |||||
void umtx_thread_fini(struct thread *); | |||||
void umtx_thread_alloc(struct thread *); | |||||
void umtx_thread_exit(struct thread *); | |||||
#endif /* _KERNEL */ | |||||
#endif /* !_SYS_UMTXVAR_H_ */ |
Please do not do this. We prefer to not nest includes. Consumer should include sys/umtx.h, then sys/umtxvar.h.