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