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glibc/string/test-string.h
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/* Test and measure string and memory functions. | |
Copyright (C) 1999-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Written by Jakub Jelinek <jakub@redhat.com>, 1999. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <sys/cdefs.h> | |
typedef struct | |
{ | |
const char *name; | |
void (*fn) (void); | |
long test; | |
} impl_t; | |
extern impl_t __start_impls[], __stop_impls[]; | |
#define IMPL(name, test) \ | |
impl_t tst_ ## name \ | |
__attribute__ ((section ("impls"), aligned (sizeof (void *)))) \ | |
= { __STRING (name), (void (*) (void))name, test }; | |
#ifdef TEST_MAIN | |
#ifndef _GNU_SOURCE | |
#define _GNU_SOURCE | |
#endif | |
#undef __USE_STRING_INLINES | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <sys/mman.h> | |
#include <sys/param.h> | |
#include <unistd.h> | |
#include <fcntl.h> | |
#include <error.h> | |
#include <errno.h> | |
#include <time.h> | |
#include <ifunc-impl-list.h> | |
#define GL(x) _##x | |
#define GLRO(x) _##x | |
# define TEST_FUNCTION test_main () | |
# define TIMEOUT (4 * 60) | |
# define OPT_ITERATIONS 10000 | |
# define OPT_RANDOM 10001 | |
# define OPT_SEED 10002 | |
unsigned char *buf1, *buf2; | |
int ret, do_srandom; | |
unsigned int seed; | |
size_t page_size; | |
# ifndef ITERATIONS | |
size_t iterations = 100000; | |
# define ITERATIONS_OPTIONS \ | |
{ "iterations", required_argument, NULL, OPT_ITERATIONS }, | |
# define ITERATIONS_PROCESS \ | |
case OPT_ITERATIONS: \ | |
iterations = strtoul (optarg, NULL, 0); \ | |
break; | |
# define ITERATIONS iterations | |
# else | |
# define ITERATIONS_OPTIONS | |
# define ITERATIONS_PROCESS | |
# endif | |
# define CMDLINE_OPTIONS ITERATIONS_OPTIONS \ | |
{ "random", no_argument, NULL, OPT_RANDOM }, \ | |
{ "seed", required_argument, NULL, OPT_SEED }, | |
# define CMDLINE_PROCESS ITERATIONS_PROCESS \ | |
case OPT_RANDOM: \ | |
{ \ | |
int fdr = open ("/dev/urandom", O_RDONLY); \ | |
\ | |
if (fdr < 0 || read (fdr, &seed, sizeof(seed)) != sizeof (seed)) \ | |
seed = time (NULL); \ | |
if (fdr >= 0) \ | |
close (fdr); \ | |
do_srandom = 1; \ | |
break; \ | |
} \ | |
\ | |
case OPT_SEED: \ | |
seed = strtoul (optarg, NULL, 0); \ | |
do_srandom = 1; \ | |
break; | |
#define CALL(impl, ...) \ | |
(* (proto_t) (impl)->fn) (__VA_ARGS__) | |
#ifdef TEST_NAME | |
/* Increase size of FUNC_LIST if assert is triggered at run-time. */ | |
static struct libc_ifunc_impl func_list[32]; | |
static int func_count; | |
static int impl_count = -1; | |
static impl_t *impl_array; | |
# define FOR_EACH_IMPL(impl, notall) \ | |
impl_t *impl; \ | |
int count; \ | |
if (impl_count == -1) \ | |
{ \ | |
impl_count = 0; \ | |
if (func_count != 0) \ | |
{ \ | |
int f; \ | |
impl_t *skip = NULL, *a; \ | |
for (impl = __start_impls; impl < __stop_impls; ++impl) \ | |
if (strcmp (impl->name, TEST_NAME) == 0) \ | |
skip = impl; \ | |
else \ | |
impl_count++; \ | |
a = impl_array = malloc ((impl_count + func_count) * \ | |
sizeof (impl_t)); \ | |
for (impl = __start_impls; impl < __stop_impls; ++impl) \ | |
if (impl != skip) \ | |
*a++ = *impl; \ | |
for (f = 0; f < func_count; f++) \ | |
if (func_list[f].usable) \ | |
{ \ | |
a->name = func_list[f].name; \ | |
a->fn = func_list[f].fn; \ | |
a->test = 1; \ | |
a++; \ | |
} \ | |
impl_count = a - impl_array; \ | |
} \ | |
else \ | |
{ \ | |
impl_count = __stop_impls - __start_impls; \ | |
impl_array = __start_impls; \ | |
} \ | |
} \ | |
impl = impl_array; \ | |
for (count = 0; count < impl_count; ++count, ++impl) \ | |
if (!notall || impl->test) | |
#else | |
# define FOR_EACH_IMPL(impl, notall) \ | |
for (impl_t *impl = __start_impls; impl < __stop_impls; ++impl) \ | |
if (!notall || impl->test) | |
#endif | |
#ifndef BUF1PAGES | |
# define BUF1PAGES 1 | |
#endif | |
static void | |
test_init (void) | |
{ | |
#ifdef TEST_NAME | |
func_count = __libc_ifunc_impl_list (TEST_NAME, func_list, | |
(sizeof func_list | |
/ sizeof func_list[0])); | |
#endif | |
page_size = 2 * getpagesize (); | |
#ifdef MIN_PAGE_SIZE | |
if (page_size < MIN_PAGE_SIZE) | |
page_size = MIN_PAGE_SIZE; | |
#endif | |
buf1 = mmap (0, (BUF1PAGES + 1) * page_size, PROT_READ | PROT_WRITE, | |
MAP_PRIVATE | MAP_ANON, -1, 0); | |
if (buf1 == MAP_FAILED) | |
error (EXIT_FAILURE, errno, "mmap failed"); | |
if (mprotect (buf1 + BUF1PAGES * page_size, page_size, PROT_NONE)) | |
error (EXIT_FAILURE, errno, "mprotect failed"); | |
buf2 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE, | |
MAP_PRIVATE | MAP_ANON, -1, 0); | |
if (buf2 == MAP_FAILED) | |
error (EXIT_FAILURE, errno, "mmap failed"); | |
if (mprotect (buf2 + page_size, page_size, PROT_NONE)) | |
error (EXIT_FAILURE, errno, "mprotect failed"); | |
if (do_srandom) | |
{ | |
printf ("Setting seed to 0x%x\n", seed); | |
srandom (seed); | |
} | |
memset (buf1, 0xa5, BUF1PAGES * page_size); | |
memset (buf2, 0x5a, page_size); | |
} | |
#endif |