You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
1.7 KiB
72 lines
1.7 KiB
/*
|
|
* Copyright 2002-2019 Intel Corporation.
|
|
*
|
|
* This software is provided to you as Sample Source Code as defined in the accompanying
|
|
* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
|
|
* section 1.L.
|
|
*
|
|
* This software and the related documents are provided as is, with no express or implied
|
|
* warranties, other than those that are expressly stated in the License.
|
|
*/
|
|
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
|
|
pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
void *threadMain(void *arg)
|
|
{
|
|
fprintf(stderr, "In second thread: starting\n");
|
|
|
|
pthread_mutex_lock(&mtx);
|
|
pthread_mutex_lock(&mtx);
|
|
|
|
/* we should not get here */
|
|
assert(0);
|
|
}
|
|
|
|
int main()
|
|
{
|
|
struct sigaction act;
|
|
pthread_t thd;
|
|
int i;
|
|
|
|
/* make poke signal restartable to reproduce mantis: 4073 */
|
|
for (i = 1; i < NSIG; i++)
|
|
{
|
|
sigaction(i, 0, &act);
|
|
act.sa_flags |= SA_RESTART;
|
|
sigaction(i, &act, 0);
|
|
}
|
|
|
|
pthread_create(&thd, NULL, &threadMain, 0);
|
|
|
|
fprintf(stderr, "In the main thread: Waiting for second thread to be ready\n");
|
|
|
|
/* wait for the thread to be ready */
|
|
while (1)
|
|
{
|
|
sleep(1);
|
|
if (0 == pthread_mutex_trylock(&mtx))
|
|
{
|
|
pthread_mutex_unlock(&mtx);
|
|
}
|
|
else
|
|
{
|
|
// First pthread_mutex_lock in the other thread was executed.
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* wait three more seconds to make sure the thread is blocked in the second pthread_mutex_lock */
|
|
sleep(3);
|
|
|
|
fprintf(stderr, "In the main thread: Exiting\n");
|
|
|
|
exit(0);
|
|
}
|