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+/*
+ * File: condvar8.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 multiple pthread_cond_broadcasts.
+ *
+ * Test Method (Validation or Falsification):
+ * - Validation
+ *
+ * Requirements Tested:
+ * -
+ *
+ * Features Tested:
+ * -
+ *
+ * Cases Tested:
+ * -
+ *
+ * Description:
+ * - Make NUMTHREADS threads wait on CV, broadcast signal them, and then repeat.
+ *
+ * Environment:
+ * -
+ *
+ * Input:
+ * - None.
+ *
+ * Output:
+ * - File name, Line number, and failed expression on failure.
+ * - No output on success.
+ *
+ * Assumptions:
+ * -
+ *
+ * Pass Criteria:
+ * - Process returns zero exit status.
+ *
+ * Fail Criteria:
+ * - Process returns non-zero exit status.
+ */
+
+#include "test.h"
+#include <sys/timeb.h>
+
+/*
+ * Create NUMTHREADS threads in addition to the Main thread.
+ */
+enum {
+ NUMTHREADS = 5
+};
+
+typedef struct bag_t_ bag_t;
+struct bag_t_ {
+ int threadnum;
+ int started;
+ /* Add more per-thread state variables here */
+};
+
+static bag_t threadbag[NUMTHREADS + 1];
+
+typedef struct cvthing_t_ cvthing_t;
+
+struct cvthing_t_ {
+ pthread_cond_t notbusy;
+ pthread_mutex_t lock;
+ int shared;
+};
+
+static cvthing_t cvthing = {
+ PTHREAD_COND_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER,
+ 0
+};
+
+static pthread_mutex_t start_flag = PTHREAD_MUTEX_INITIALIZER;
+
+static struct timespec abstime = { 0, 0 };
+
+static int awoken;
+
+static void *
+mythread(void * arg)
+{
+ bag_t * bag = (bag_t *) arg;
+
+ assert(bag == &threadbag[bag->threadnum]);
+ assert(bag->started == 0);
+ bag->started = 1;
+
+ /* Wait for the start gun */
+ assert(pthread_mutex_lock(&start_flag) == 0);
+ assert(pthread_mutex_unlock(&start_flag) == 0);
+
+ assert(pthread_mutex_lock(&cvthing.lock) == 0);
+
+#ifdef _MSC_VER
+#pragma inline_depth(0)
+#endif
+ pthread_cleanup_push(pthread_mutex_unlock, (void *) &cvthing.lock);
+
+ while (! (cvthing.shared > 0))
+ assert(pthread_cond_timedwait(&cvthing.notbusy, &cvthing.lock, &abstime) == 0);
+
+ pthread_cleanup_pop(0);
+#ifdef _MSC_VER
+#pragma inline_depth()
+#endif
+
+ assert(cvthing.shared > 0);
+
+ awoken++;
+
+ assert(pthread_mutex_unlock(&cvthing.lock) == 0);
+
+ return (void *) 0;
+}
+
+int
+main()
+{
+ int failed = 0;
+ int i;
+ int first, last;
+ pthread_t t[NUMTHREADS + 1];
+
+ struct _timeb currSysTime;
+ const DWORD NANOSEC_PER_MILLISEC = 1000000;
+
+ assert((t[0] = pthread_self()).p != NULL);
+
+ assert(cvthing.notbusy == PTHREAD_COND_INITIALIZER);
+
+ assert(cvthing.lock == PTHREAD_MUTEX_INITIALIZER);
+
+ _ftime(&currSysTime);
+
+ abstime.tv_sec = currSysTime.time;
+ abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
+
+ abstime.tv_sec += 10;
+
+ assert((t[0] = pthread_self()).p != NULL);
+
+ awoken = 0;
+
+ for (first = 1, last = NUMTHREADS / 2;
+ first < NUMTHREADS;
+ first = last + 1, last = NUMTHREADS)
+ {
+ assert(pthread_mutex_lock(&start_flag) == 0);
+
+ for (i = first; i <= last; i++)
+ {
+ threadbag[i].started = 0;
+ threadbag[i].threadnum = i;
+ assert(pthread_create(&t[i], NULL, mythread, (void *) &threadbag[i]) == 0);
+ }
+
+ /*
+ * Code to control or munipulate child threads should probably go here.
+ */
+ cvthing.shared = 0;
+
+ assert(pthread_mutex_unlock(&start_flag) == 0);
+
+ /*
+ * Give threads time to start.
+ */
+ Sleep(100);
+
+ assert(pthread_mutex_lock(&cvthing.lock) == 0);
+ cvthing.shared++;
+ assert(pthread_mutex_unlock(&cvthing.lock) == 0);
+
+ assert(pthread_cond_broadcast(&cvthing.notbusy) == 0);
+
+ /*
+ * Give threads time to complete.
+ */
+ for (i = first; i <= last; i++)
+ {
+ assert(pthread_join(t[i], NULL) == 0);
+ }
+
+ assert(awoken == (i - 1));
+ }
+
+
+ /*
+ * Standard check that all threads started.
+ */
+ for (i = 1; i <= NUMTHREADS; i++)
+ {
+ failed = !threadbag[i].started;
+
+ if (failed)
+ {
+ fprintf(stderr, "Thread %d: started %d\n", i, threadbag[i].started);
+ }
+ }
+
+ /*
+ * Cleanup the CV.
+ */
+
+ assert(pthread_mutex_destroy(&cvthing.lock) == 0);
+
+ assert(cvthing.lock == NULL);
+
+ assert(pthread_cond_destroy(&cvthing.notbusy) == 0);
+
+ assert(cvthing.notbusy == NULL);
+
+ assert(!failed);
+
+ /*
+ * Check any results here.
+ */
+
+ assert(awoken == NUMTHREADS);
+
+ /*
+ * Success.
+ */
+ return 0;
+}