mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/* Test for sem_post race: bug 14532.
|
|
Copyright (C) 2012-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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 <pthread.h>
|
|
#include <semaphore.h>
|
|
#include <stdio.h>
|
|
|
|
#define NTHREADS 10
|
|
#define NITER 100000
|
|
|
|
sem_t sem;
|
|
int c;
|
|
volatile int thread_fail;
|
|
|
|
static void *
|
|
tf (void *arg)
|
|
{
|
|
for (int i = 0; i < NITER; i++)
|
|
{
|
|
if (sem_wait (&sem) != 0)
|
|
{
|
|
perror ("sem_wait");
|
|
thread_fail = 1;
|
|
}
|
|
++c;
|
|
if (sem_post (&sem) != 0)
|
|
{
|
|
perror ("sem_post");
|
|
thread_fail = 1;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
if (sem_init (&sem, 0, 0) != 0)
|
|
{
|
|
perror ("sem_init");
|
|
return 1;
|
|
}
|
|
|
|
pthread_t th[NTHREADS];
|
|
for (int i = 0; i < NTHREADS; i++)
|
|
{
|
|
if (pthread_create (&th[i], NULL, tf, NULL) != 0)
|
|
{
|
|
puts ("pthread_create failed");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (sem_post (&sem) != 0)
|
|
{
|
|
perror ("sem_post");
|
|
return 1;
|
|
}
|
|
|
|
for (int i = 0; i < NTHREADS; i++)
|
|
if (pthread_join (th[i], NULL) != 0)
|
|
{
|
|
puts ("pthread_join failed");
|
|
return 1;
|
|
}
|
|
|
|
if (c != NTHREADS * NITER)
|
|
{
|
|
printf ("c = %d, should be %d\n", c, NTHREADS * NITER);
|
|
return 1;
|
|
}
|
|
return thread_fail;
|
|
}
|
|
|
|
#define TIMEOUT 10
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|