1 files changed, 161 insertions, 0 deletions
diff --git a/nuttx/examples/ostest/timedwait.c b/nuttx/examples/ostest/timedwait.c
new file mode 100644
index 0000000000..9f3e61eae2
--- /dev/null
+++ b/nuttx/examples/ostest/timedwait.c
@@ -0,0 +1,161 @@
+/***********************************************************************
+ * timedwait.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ***********************************************************************/
+
+#include <stdio.h>
+#include <time.h>
+#include <pthread.h>
+#include <unistd.h>
+#include "ostest.h"
+
+static pthread_mutex_t mutex;
+static pthread_cond_t  cond;
+
+static void *thread_waiter(void *parameter)
+{
+  struct timespec time;
+  int status;
+
+  /* Take the mutex */
+
+  printf("%s: Taking mutex\n", __FUNCTION__);
+  status = pthread_mutex_lock(&mutex);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_mutex_lock failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  printf("%s: Starting 5 second wait for condition\n", __FUNCTION__);
+
+  status = clock_gettime(CLOCK_REALTIME, &time);
+  if (status != 0)
+    {
+      printf("%s: ERROR clock_gettime failed\n", __FUNCTION__);
+    }
+  time.tv_sec += 5;
+
+  /* The wait -- no-one is ever going to awaken us */
+
+  status = pthread_cond_timedwait(&cond, &mutex, &time);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_cond_timedwait failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  /* Release the mutex */
+
+  printf("%s: Releasing mutex\n", __FUNCTION__);
+  status = pthread_mutex_unlock(&mutex);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_mutex_unlock failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  printf("%s: Exit with status 0x12345678\n", __FUNCTION__);
+  pthread_exit((void*)0x12345678);
+  return NULL;
+}
+
+void timedwait_test(void)
+{
+  pthread_t waiter;
+  pthread_attr_t attr;
+  struct sched_param sparam;
+  void *result;
+  int prio_max;
+  int status;
+
+  /* Initialize the mutex */
+
+  printf("%s: Initializing mutex\n", __FUNCTION__);
+  status = pthread_mutex_init(&mutex, NULL);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_mutex_init failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  /* Initialize the condition variable */
+
+  printf("%s: Initializing cond\n", __FUNCTION__);
+  status = pthread_cond_init(&cond, NULL);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_condinit failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  /* Start the waiter thread at higher priority */
+
+  printf("%s: Starting waiter\n", __FUNCTION__);
+  status = pthread_attr_init(&attr);
+  if (status != 0)
+    {
+      printf("%s: pthread_attr_init failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  prio_max = sched_get_priority_max(SCHED_FIFO);
+  status = sched_getparam (getpid(), &sparam);
+  if (status != 0)
+    {
+      printf("%s: sched_getparam failed\n", __FUNCTION__);
+      sparam.sched_priority = PTHREAD_DEFAULT_PRIORITY;
+    }
+
+  sparam.sched_priority = (prio_max + sparam.sched_priority) / 2;
+  status = pthread_attr_setschedparam(&attr,&sparam);
+  if (status != OK)
+    {
+      printf("%s: pthread_attr_setschedparam failed, status=%d\n", __FUNCTION__, status);
+    }
+  else
+    {
+      printf("%s: Set thread 2 priority to %d\n", __FUNCTION__, sparam.sched_priority);
+    }
+
+  status = pthread_create(&waiter, &attr, thread_waiter, NULL);
+  if (status != 0)
+    {
+      printf("%s: pthread_create failed, status=%d\n", __FUNCTION__, status);
+    }
+
+  printf("%s: Joining\n", __FUNCTION__);
+  status = pthread_join(waiter, &result);
+  if (status != 0)
+    {
+      printf("%s: ERROR pthread_join failed, status=%d\n", __FUNCTION__, status);
+    }
+  else
+    {
+      printf("%s: waiter exited with result=%p\n", __FUNCTION__, result);
+    }
+}