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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Diffstat (limited to 'pthreads/tests/condvar3.c')
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diff --git a/pthreads/tests/condvar3.c b/pthreads/tests/condvar3.c
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+/*
+ * File: condvar3.c
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Test Synopsis:
+ * - Test basic function of a CV
+ *
+ * Test Method (Validation or Falsification):
+ * - Validation
+ *
+ * Requirements Tested:
+ * -
+ *
+ * Features Tested:
+ * -
+ *
+ * Cases Tested:
+ * -
+ *
+ * Description:
+ * - The primary thread takes the lock before creating any threads.
+ * The secondary thread blocks on the lock allowing the primary
+ * thread to enter the cv wait state which releases the lock.
+ * The secondary thread then takes the lock and signals the waiting
+ * primary thread.
+ *
+ * Environment:
+ * -
+ *
+ * Input:
+ * - None.
+ *
+ * Output:
+ * - File name, Line number, and failed expression on failure.
+ * - No output on success.
+ *
+ * Assumptions:
+ * -
+ *
+ * Pass Criteria:
+ * - pthread_cond_timedwait returns 0.
+ * - Process returns zero exit status.
+ *
+ * Fail Criteria:
+ * - pthread_cond_timedwait returns 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 int shared = 0;
+
+enum {
+ NUMTHREADS = 2 /* Including the primary thread. */
+};
+
+void *
+mythread(void * arg)
+{
+ int result = 0;
+
+ assert(pthread_mutex_lock(&mutex) == 0);
+ shared++;
+ assert(pthread_mutex_unlock(&mutex) == 0);
+
+ if ((result = pthread_cond_signal(&cv)) != 0)
+ {
+ printf("Error = %s\n", error_string[result]);
+ }
+ assert(result == 0);
+
+
+ return (void *) 0;
+}
+
+int
+main()
+{
+ pthread_t t[NUMTHREADS];
+ struct timespec abstime = { 0, 0 };
+ struct _timeb currSysTime;
+ const DWORD NANOSEC_PER_MILLISEC = 1000000;
+
+ assert((t[0] = pthread_self()).p != NULL);
+
+ assert(pthread_cond_init(&cv, NULL) == 0);
+
+ assert(pthread_mutex_init(&mutex, NULL) == 0);
+
+ assert(pthread_mutex_lock(&mutex) == 0);
+
+ /* get current system time */
+ _ftime(&currSysTime);
+
+ abstime.tv_sec = currSysTime.time;
+ abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
+
+ assert(pthread_create(&t[1], NULL, mythread, (void *) 1) == 0);
+
+ abstime.tv_sec += 5;
+
+ while (! (shared > 0))
+ assert(pthread_cond_timedwait(&cv, &mutex, &abstime) == 0);
+
+ assert(shared > 0);
+
+ assert(pthread_mutex_unlock(&mutex) == 0);
+
+ assert(pthread_join(t[1], NULL) == 0);
+
+ assert(pthread_cond_destroy(&cv) == 0);
+
+ return 0;
+}