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/*
* pthread_cond_wait() test program.
* See also https://bugs.kde.org/show_bug.cgi?id=235681.
*/
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <pthread.h>
#include <errno.h>
#include <unistd.h>
pthread_mutex_t mutex;
pthread_cond_t cond_var;
int status;
int silent;
static void *run_fn(void *v)
{
int rc;
if (!silent)
fprintf(stderr, "run_fn starting\n");
rc = pthread_mutex_lock(&mutex);
assert(!rc);
while (!status) {
if (!silent)
fprintf(stderr, "run_fn(): status==0\n");
rc = pthread_cond_wait(&cond_var, &mutex);
assert(!rc);
if (!silent)
fprintf(stderr, "run_fn(): woke up\n");
}
if (!silent)
fprintf(stderr, "run_fn(): status==1\n");
rc = pthread_mutex_unlock(&mutex);
assert(!rc);
if (!silent)
fprintf(stderr, "run_fn done\n");
return NULL;
}
int main(int argc, char **argv)
{
int rc;
pthread_t other_thread;
if (argc > 1)
silent = 1;
rc = pthread_mutex_init(&mutex, NULL);
assert(!rc);
rc = pthread_cond_init(&cond_var, NULL);
assert(!rc);
status = 0;
rc = pthread_create(&other_thread, NULL, run_fn, NULL);
assert(!rc);
/* yield the processor, and give the other thread a chance to get into the while loop */
if (!silent)
fprintf(stderr, "main(): sleeping...\n");
sleep(1);
rc = pthread_mutex_lock(&mutex);
assert(!rc);
/**** BEGIN CS *****/
if (!silent)
fprintf(stderr, "main(): status=1\n");
status = 1;
rc = pthread_cond_broadcast(&cond_var);
assert(!rc);
/**** END CS *****/
rc = pthread_mutex_unlock(&mutex);
assert(!rc);
if (!silent)
fprintf(stderr, "joining...\n");
rc = pthread_join(other_thread, NULL);
assert(!rc);
fprintf(stderr, "Done.\n");
return 0;
}
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