Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-11-01 11:11:37 +08:00 · 2012-09-17 18:18:44 +00:00
commit 57623d42eb
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+/***********************************************************************
+ * rmutex.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 NuttX 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 <pthread.h>
+#include "ostest.h"
+
+#ifndef NULL
+# define NULL (void*)0
+#endif
+
+#define NTHREADS    3
+#define NLOOPS      3
+#define NRECURSIONS 3
+
+static pthread_mutex_t mut;
+
+static void thread_inner(int id, int level)
+{
+  int status;
+  if (level < NRECURSIONS)
+    {
+      /* Take the mutex */
+
+      printf("thread_inner[%d, %d]: Locking\n", id, level);
+      status = pthread_mutex_lock(&mut);
+      if (status != 0)
+        {
+          printf("thread_inner[%d, %d]: ERROR pthread_mutex_lock failed: %d\n",
+                  id, level, status);
+        }
+      printf("thread_inner[%d, %d]: Locked\n", id, level);
+
+      /* Give the other threads a chance */
+      
+      pthread_yield();
+      thread_inner(id, level+1);
+      pthread_yield();
+
+      /* Unlock the mutex */
+
+      printf("thread_inner[%d, %d]: Unlocking\n", id, level);
+      status = pthread_mutex_unlock(&mut);
+      if (status != 0)
+        {
+          printf("thread_inner[%d, %d]: ERROR pthread_mutex_unlock failed: %d\n",
+                 id, level, status);
+        }
+      printf("thread_inner[%d, %d]: Unlocked\n", id, level);
+      pthread_yield();
+    }
+}
+
+static void *thread_outer(void *parameter)
+{
+  int i;
+  printf("thread_outer[%d]: Started\n", (int)parameter);
+  for (i = 0; i < NLOOPS; i++)
+    {
+      printf("thread_outer[%d]: Loop %d\n", (int)parameter, i);
+      thread_inner((int)parameter, 0);
+    }
+  printf("thread_outer[%d]: Exitting\n", (int)parameter);
+  pthread_exit(NULL);
+  return NULL; /* Non-reachable -- needed for some compilers */
+}
+
+void recursive_mutex_test(void)
+{
+  pthread_t thread[NTHREADS];
+#ifdef SDCC
+  pthread_addr_t result[NTHREADS];
+  pthread_attr_t attr;
+#endif
+  pthread_mutexattr_t mattr;
+  int type;
+  int status;
+  int i;
+
+  /* Initialize the mutex attributes */
+
+  pthread_mutexattr_init(&mattr);
+  status = pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE);
+  if (status != 0)
+    {
+      printf("recursive_mutex_test: ERROR pthread_mutexattr_settype failed, status=%d\n", status);
+    }
+
+  status = pthread_mutexattr_gettype(&mattr, &type);
+  if (status != 0)
+    {
+      printf("recursive_mutex_test: ERROR pthread_mutexattr_gettype failed, status=%d\n", status);
+    }
+  if (type != PTHREAD_MUTEX_RECURSIVE)
+    {
+      printf("recursive_mutex_test: ERROR pthread_mutexattr_gettype return type=%d\n", type);
+    }
+  
+  /* Initialize the mutex */
+
+  printf("recursive_mutex_test: Initializing mutex\n");
+  pthread_mutex_init(&mut, &mattr);
+
+  /* Start the threads -- all at the same, default priority */
+
+  for (i = 0; i < NTHREADS; i++)
+    {
+      printf("recursive_mutex_test: Starting thread %d\n", i+1);
+#ifdef SDCC
+      (void)pthread_attr_init(&attr);
+      status = pthread_create(&thread[i], &attr, thread_outer, (pthread_addr_t)i+1);
+#else
+      status = pthread_create(&thread[i], NULL, thread_outer, (pthread_addr_t)i+1);
+#endif
+      if (status != 0)
+        {
+          printf("recursive_mutex_test: ERRROR thread#%d creation: %d\n", i+1, status);
+        }
+    }
+
+  /* Wait for all; of the threads to complete */
+
+  for (i = 0; i < NTHREADS; i++)
+    {
+      printf("recursive_mutex_test: Waiting for thread %d\n", i+1);
+#ifdef SDCC
+      pthread_join(thread[i], &result1);
+#else
+      pthread_join(thread[i], NULL);
+#endif
+    }
+
+  printf("recursive_mutex_test: Complete\n");
+}