Add support for recursive mutexes

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@753 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 100 insertions, 0 deletions

diff --git a/nuttx/sched/pthread_mutexattrgettype.c b/nuttx/sched/pthread_mutexattrgettype.c
new file mode 100644
index 000000000..fb01c2383
--- /dev/null
+++ b/nuttx/sched/pthread_mutexattrgettype.c
@@ -0,0 +1,100 @@
+/****************************************************************************
+ * sched/pthread_mutexattrgettype.c
+ *
+ *   Copyright (C) 2008 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 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <pthread.h>
+#include <errno.h>
+
+#include "pthread_internal.h"
+
+#ifdef CONFIG_MUTEX_TYPES
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: pthread_mutexattr_gettype
+ *
+ * Description:
+ *   Return the mutex type from the mutex attributes.
+ *
+ * Parameters:
+ *   attr - The mutex attributes to query
+ *   type - Location to return the mutex type
+ *
+ * Return Value:
+ *   0, if the mutex type was successfully return in 'type', or
+ *   EINVAL, if any NULL pointers provided.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *type)
+{
+  if (attr && type)
+    {
+      *type = attr->type;
+      return 0;
+    }
+  return EINVAL;
+}
+
+#endif /* CONFIG_MUTEX_TYPES */