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Diffstat (limited to 'winsup/testsuite/winsup.api/pthread/condvar3_2.c')
-rw-r--r-- | winsup/testsuite/winsup.api/pthread/condvar3_2.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/pthread/condvar3_2.c b/winsup/testsuite/winsup.api/pthread/condvar3_2.c new file mode 100644 index 000000000..57e7eb439 --- /dev/null +++ b/winsup/testsuite/winsup.api/pthread/condvar3_2.c @@ -0,0 +1,139 @@ +/* + * File: condvar3_2.c + * + * Test Synopsis: + * - Test timeout of multiple waits on a CV with remainder broadcast awoken. + * + * Test Method (Validation or Falsification): + * - Validation + * + * Requirements Tested: + * - + * + * Features Tested: + * - + * + * Cases Tested: + * - + * + * Description: + * - Because some CVs are never signaled, we expect their waits to time out. + * Some time out, the rest are broadcast signaled. Pthread_cond_destroy() will fail + * unless all are accounted for, either signaled or timedout. + * + * 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. + */ + +#include "test.h" +#include <sys/timeb.h> + +static pthread_cond_t cv; +static pthread_mutex_t mutex; +static struct timespec abstime = { 0, 0 }; +static struct timespec abstime2 = { 0, 0 }; +static int timedout = 0; +static int awoken = 0; + +enum { + NUMTHREADS = 60 +}; + +void * +mythread(void * arg) +{ + int result; + + assert(pthread_mutex_lock(&mutex) == 0); + + abstime2.tv_sec = abstime.tv_sec; + + if ((int) arg % 3 == 0) + { + abstime2.tv_sec += 2; + } + + result = pthread_cond_timedwait(&cv, &mutex, &abstime2); + if (result == ETIMEDOUT) + { + timedout++; + } + else + { + awoken++; + } + + assert(pthread_mutex_unlock(&mutex) == 0); + + return arg; +} + +int +main() +{ + int i; + pthread_t t[NUMTHREADS + 1]; + int result = 0; + struct timeb currSysTime; + const DWORD NANOSEC_PER_MILLISEC = 1000000; + + assert(pthread_cond_init(&cv, NULL) == 0); + + assert(pthread_mutex_init(&mutex, NULL) == 0); + + /* get current system time */ + ftime(&currSysTime); + + abstime.tv_sec = abstime.tv_sec = currSysTime.time + 5; + abstime.tv_nsec = abstime2.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm; + + assert(pthread_mutex_lock(&mutex) == 0); + + for (i = 1; i <= NUMTHREADS; i++) + { + assert(pthread_create(&t[i], NULL, mythread, (void *) i) == 0); + } + + assert(pthread_mutex_unlock(&mutex) == 0); + + for (i = 1; i <= NUMTHREADS; i++) + { + assert(pthread_join(t[i], (void **) &result) == 0); + assert(result == i); + /* + * Approximately 2/3rds of the threads are expected to time out. + * Signal the remainder after some threads have woken up and exited + * and while some are still waking up after timeout. + * Also tests that redundant broadcasts don't return errors. + */ + if (awoken > NUMTHREADS/3) + { + assert(pthread_cond_broadcast(&cv) == 0); + } + } + + assert(awoken == NUMTHREADS - timedout); + + result = pthread_cond_destroy(&cv); + assert(result == 0); + + return 0; +} |