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/*
* File: condvar3_3.c
*
* Test Synopsis:
* - Test timeouts and lost signals on a CV.
*
* Test Method (Validation or Falsification):
* - Validation
*
* Requirements Tested:
* -
*
* Features Tested:
* -
*
* Cases Tested:
* -
*
* Description:
* -
*
* Environment:
* -
*
* Input:
* - None.
*
* Output:
* - File name, Line number, and failed expression on failure.
* - No output on success.
*
* Assumptions:
* -
*
* Pass Criteria:
* - pthread_cond_timedwait returns ETIMEDOUT.
* - Process returns zero exit status.
*
* Fail Criteria:
* - pthread_cond_timedwait does not return ETIMEDOUT.
* - Process returns non-zero exit status.
*/
/* Timur Aydin (taydin@snet.net) */
#include "test.h"
#include <sys/timeb.h>
pthread_cond_t cnd;
pthread_mutex_t mtx;
int main()
{
int rc;
struct timespec abstime = { 0, 0 };
struct timeb currSysTime;
const DWORD NANOSEC_PER_MILLISEC = 1000000;
assert(pthread_cond_init(&cnd, 0) == 0);
assert(pthread_mutex_init(&mtx, 0) == 0);
/* get current system time */
ftime(&currSysTime);
abstime.tv_sec = currSysTime.time;
abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
abstime.tv_sec += 1;
/* Here pthread_cond_timedwait should time out after one second. */
assert(pthread_mutex_lock(&mtx) == 0);
assert((rc = pthread_cond_timedwait(&cnd, &mtx, &abstime)) == ETIMEDOUT);
assert(pthread_mutex_unlock(&mtx) == 0);
/* Here, the condition variable is signaled, but there are no
threads waiting on it. The signal should be lost and
the next pthread_cond_timedwait should time out too. */
assert(pthread_mutex_lock(&mtx) == 0);
assert((rc = pthread_cond_signal(&cnd)) == 0);
assert(pthread_mutex_unlock(&mtx) == 0);
assert(pthread_mutex_lock(&mtx) == 0);
abstime.tv_sec = currSysTime.time;
abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
abstime.tv_sec += 1;
assert((rc = pthread_cond_timedwait(&cnd, &mtx, &abstime)) == ETIMEDOUT);
assert(pthread_mutex_unlock(&mtx) == 0);
return 0;
}
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