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authorrpj <rpj>2001-06-03 16:41:27 +0000
committerrpj <rpj>2001-06-03 16:41:27 +0000
commit5b826fe110d9cde198d2aae27e144ac635ad921f (patch)
tree7bc68cc31f521209cd0d9c78c55abaa56e8ff253 /tests/condvar3_1.c
parent860ecc4c24475dc3d3efe0adc981071f2aaf1299 (diff)
pthreads:
2001-06-03 Ross Johnson <rpj@setup1.ise.canberra.edu.au> Contributed by - Alexander Terekhov <TEREKHOV@de.ibm.com> - Louis Thomas <lthomas@arbitrade.com> * condvar.c (pthread_cond_init): Completely revamped. (pthread_cond_destroy): Likewise. (ptw32_cond_wait_cleanup): Likewise. (ptw32_cond_timedwait): Likewise. (ptw32_cond_unblock): New general signaling routine. (pthread_cond_signal): Now calls ptw32_cond_unblock. (pthread_cond_broadcast): Likewise. * implement.h (pthread_cond_t_): Revamped. * README.CV: New; explanation of the above changes. pthreads/tests: 2001-06-3 Ross Johnson <rpj@special.ise.canberra.edu.au> * condvar2_1.c: New test. * condvar3_1.c: New test. * condvar3_2.c: New test.
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+/*
+ * File: condvar3_1.c
+ *
+ * Test Synopsis:
+ * - Test timeout of multiple waits on a CV with some signaled.
+ *
+ * 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 are signaled, the rest time out. 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 int timedout = 0;
+static int signaled = 0;
+static int awoken = 0;
+
+enum {
+ NUMTHREADS = 60
+};
+
+void *
+mythread(void * arg)
+{
+ int result;
+
+ assert(pthread_mutex_lock(&mutex) == 0);
+
+ result = pthread_cond_timedwait(&cv, &mutex, &abstime);
+ if (result == ETIMEDOUT)
+ {
+ timedout++;
+ }
+ else
+ {
+ awoken++;
+ }
+
+ assert(pthread_mutex_unlock(&mutex) == 0);
+
+ return arg;
+}
+
+#include "../implement.h"
+
+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 = currSysTime.time;
+ abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
+
+ abstime.tv_sec += 5;
+
+ 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 = NUMTHREADS/3; i <= 2*NUMTHREADS/3; i++)
+ {
+ assert(pthread_cond_signal(&cv) == 0);
+ signaled++;
+ }
+
+ for (i = 1; i <= NUMTHREADS; i++)
+ {
+ assert(pthread_join(t[i], (void **) &result) == 0);
+ assert(result == i);
+ }
+
+ assert(signaled == awoken);
+ assert(timedout == NUMTHREADS - signaled);
+
+ {
+ int result = pthread_cond_destroy(&cv);
+ if (result != 0)
+ {
+ fprintf(stderr, "Result = %s\n", error_string[result]);
+ fprintf(stderr, "\tWaitersBlocked = %ld\n", cv->nWaitersBlocked);
+ fprintf(stderr, "\tWaitersUnblocked = %ld\n", cv->nWaitersUnblocked);
+ fprintf(stderr, "\tWaitersGone = %ld\n", cv->nWaitersGone);
+ fprintf(stderr, "\tWaitersToUnblock = %ld\n", cv->nWaitersToUnblock);
+ fflush(stderr);
+ }
+ assert(result == 0);
+ }
+
+ return 0;
+}