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glibc/nptl/tst-cond16.c
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/* Copyright (C) 2004-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. | |
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 <errno.h> | |
#include <pthread.h> | |
#include <stdbool.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
pthread_cond_t cv = PTHREAD_COND_INITIALIZER; | |
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; | |
bool n, exiting; | |
FILE *f; | |
int count; | |
void * | |
tf (void *dummy) | |
{ | |
bool loop = true; | |
while (loop) | |
{ | |
pthread_mutex_lock (&lock); | |
while (n && !exiting) | |
pthread_cond_wait (&cv, &lock); | |
n = true; | |
pthread_mutex_unlock (&lock); | |
fputs (".", f); | |
pthread_mutex_lock (&lock); | |
n = false; | |
if (exiting) | |
loop = false; | |
#ifdef UNLOCK_AFTER_BROADCAST | |
pthread_cond_broadcast (&cv); | |
pthread_mutex_unlock (&lock); | |
#else | |
pthread_mutex_unlock (&lock); | |
pthread_cond_broadcast (&cv); | |
#endif | |
} | |
return NULL; | |
} | |
int | |
do_test (void) | |
{ | |
f = fopen ("/dev/null", "w"); | |
if (f == NULL) | |
{ | |
printf ("couldn't open /dev/null, %m\n"); | |
return 1; | |
} | |
count = sysconf (_SC_NPROCESSORS_ONLN); | |
if (count <= 0) | |
count = 1; | |
count *= 4; | |
pthread_t th[count]; | |
pthread_attr_t attr; | |
int i, ret, sz; | |
pthread_attr_init (&attr); | |
sz = __getpagesize (); | |
if (sz < PTHREAD_STACK_MIN) | |
sz = PTHREAD_STACK_MIN; | |
pthread_attr_setstacksize (&attr, sz); | |
for (i = 0; i < count; ++i) | |
if ((ret = pthread_create (&th[i], &attr, tf, NULL)) != 0) | |
{ | |
errno = ret; | |
printf ("pthread_create %d failed: %m\n", i); | |
return 1; | |
} | |
struct timespec ts = { .tv_sec = 20, .tv_nsec = 0 }; | |
while (nanosleep (&ts, &ts) != 0); | |
pthread_mutex_lock (&lock); | |
exiting = true; | |
pthread_mutex_unlock (&lock); | |
for (i = 0; i < count; ++i) | |
pthread_join (th[i], NULL); | |
fclose (f); | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#define TIMEOUT 40 | |
#include "../test-skeleton.c" |