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/* $NetBSD: nbperf.c,v 1.5 2013/01/31 16:32:02 joerg Exp $ */
/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Joerg Sonnenberger.
*
* 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 COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDERS 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 <sys/cdefs.h>
#include <sys/endian.h>
#include <err.h>
#include <errno.h>
#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "nbperf.h"
static int predictable;
static __dead
void usage(void)
{
fprintf(stderr,
"%s [-ps] [-c utilisation] [-i iterations] [-n name] "
"[-o output] input\n",
getprogname());
exit(1);
}
#if HAVE_NBTOOL_CONFIG_H && !defined(__NetBSD__)
#define arc4random() rand()
#endif
static void
mi_vector_hash_seed_hash(struct nbperf *nbperf)
{
static uint32_t predictable_counter;
if (predictable)
nbperf->seed[0] = predictable_counter++;
else
nbperf->seed[0] = arc4random();
}
static void
mi_vector_hash_compute(struct nbperf *nbperf, const void *key, size_t keylen,
uint32_t *hashes)
{
mi_vector_hash(key, keylen, nbperf->seed[0], hashes);
}
static void
mi_vector_hash_print_hash(struct nbperf *nbperf, const char *indent,
const char *key, const char *keylen, const char *hash)
{
fprintf(nbperf->output,
"%smi_vector_hash(%s, %s, 0x%08" PRIx32 "U, %s);\n",
indent, key, keylen, nbperf->seed[0], hash);
}
static void
set_hash(struct nbperf *nbperf, const char *arg)
{
if (strcmp(arg, "mi_vector_hash") == 0) {
nbperf->hash_size = 3;
nbperf->seed_hash = mi_vector_hash_seed_hash;
nbperf->compute_hash = mi_vector_hash_compute;
nbperf->print_hash = mi_vector_hash_print_hash;
return;
}
if (nbperf->hash_size > NBPERF_MAX_HASH_SIZE)
errx(1, "Hash function creates too many output values");
errx(1, "Unknown hash function: %s", arg);
}
int
main(int argc, char **argv)
{
struct nbperf nbperf = {
.c = 0,
.hash_name = "hash",
.map_output = NULL,
.output = NULL,
.static_hash = 0,
.first_round = 1,
.has_duplicates = 0,
};
FILE *input;
size_t curlen = 0, curalloc = 0;
char *line, *eos;
ssize_t line_len;
size_t line_allocated;
const void **keys = NULL;
size_t *keylens = NULL;
uint32_t max_iterations = 0xffffffU;
long long tmp;
int looped, ch;
int (*build_hash)(struct nbperf *) = chm_compute;
set_hash(&nbperf, "mi_vector_hash");
while ((ch = getopt(argc, argv, "a:c:h:i:m:n:o:ps")) != -1) {
switch (ch) {
case 'a':
/* Accept bdz as alias for netbsd-6 compat. */
if (strcmp(optarg, "chm") == 0)
build_hash = chm_compute;
else if (strcmp(optarg, "chm3") == 0)
build_hash = chm3_compute;
else if (strcmp(optarg, "bpz") == 0 ||
strcmp(optarg, "bdz") == 0)
build_hash = bpz_compute;
else
errx(1, "Unsupport algorithm: %s", optarg);
break;
case 'c':
errno = 0;
nbperf.c = strtod(optarg, &eos);
if (errno || eos[0] || !nbperf.c)
errx(2, "Invalid argument for -c");
break;
case 'h':
set_hash(&nbperf, optarg);
break;
case 'i':
errno = 0;
tmp = strtoll(optarg, &eos, 0);
if (errno || eos == optarg || eos[0] ||
tmp < 0 || tmp > 0xffffffffU)
errx(2, "Iteration count must be "
"a 32bit integer");
max_iterations = (uint32_t)tmp;
break;
case 'm':
if (nbperf.map_output)
fclose(nbperf.map_output);
nbperf.map_output = fopen(optarg, "w");
if (nbperf.map_output == NULL)
err(2, "cannot open map file");
break;
case 'n':
nbperf.hash_name = optarg;
break;
case 'o':
if (nbperf.output)
fclose(nbperf.output);
nbperf.output = fopen(optarg, "w");
if (nbperf.output == NULL)
err(2, "cannot open output file");
break;
case 'p':
predictable = 1;
break;
case 's':
nbperf.static_hash = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
if (argc == 1) {
input = fopen(argv[0], "r");
if (input == NULL)
err(1, "can't open input file");
} else
input = stdin;
if (nbperf.output == NULL)
nbperf.output = stdout;
line = NULL;
line_allocated = 0;
while ((line_len = getline(&line, &line_allocated, input)) != -1) {
if (line_len && line[line_len - 1] == '\n')
--line_len;
if (curlen == curalloc) {
if (curalloc < 256)
curalloc = 256;
else
curalloc += curalloc;
keys = realloc(keys, curalloc * sizeof(*keys));
if (keys == NULL)
err(1, "realloc failed");
keylens = realloc(keylens,
curalloc * sizeof(*keylens));
if (keylens == NULL)
err(1, "realloc failed");
}
if ((keys[curlen] = strndup(line, line_len)) == NULL)
err(1, "malloc failed");
keylens[curlen] = line_len;
++curlen;
}
free(line);
if (input != stdin)
fclose(input);
nbperf.n = curlen;
nbperf.keys = keys;
nbperf.keylens = keylens;
looped = 0;
while ((*build_hash)(&nbperf)) {
if (nbperf.has_duplicates)
errx(1, "Duplicate keys detected");
fputc('.', stderr);
looped = 1;
if (max_iterations == 0xffffffffU)
continue;
if (--max_iterations == 0) {
fputc('\n', stderr);
errx(1, "Iteration count reached");
}
}
if (looped)
fputc('\n', stderr);
return 0;
}