1 files changed, 138 insertions, 0 deletions
diff --git a/nuttx/sched/pthread_mutexinit.c b/nuttx/sched/pthread_mutexinit.c
new file mode 100644
index 000000000..265f014e3
--- /dev/null
+++ b/nuttx/sched/pthread_mutexinit.c
@@ -0,0 +1,138 @@
+/****************************************************************************
+ * sched/pthread_mutexinit.c
+ *
+ *   Copyright (C) 2007-2009, 2011 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <pthread.h>
+#include <errno.h>
+#include <debug.h>
+
+#include "pthread_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pthread_mutex_init
+ *
+ * Description:
+ *   Create a mutex
+ *
+ * Parameters:
+ *   None
+ *
+ * Return Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+int pthread_mutex_init(FAR pthread_mutex_t *mutex, FAR pthread_mutexattr_t *attr)
+{
+  int pshared = 0;
+#ifdef CONFIG_MUTEX_TYPES
+  uint8_t type  = PTHREAD_MUTEX_DEFAULT;
+#endif
+  int ret       = OK;
+  int status;
+
+  sdbg("mutex=0x%p attr=0x%p\n", mutex, attr);
+
+  if (!mutex)
+    {
+      ret = EINVAL;
+    }
+  else
+    {
+      /* Were attributes specified?  If so, use them */
+
+      if (attr)
+        {
+          pshared = attr->pshared;
+#ifdef CONFIG_MUTEX_TYPES
+          type    = attr->type;
+#endif
+        }
+
+      /* Indicate that the semaphore is not held by any thread. */
+
+      mutex->pid = 0;
+
+      /* Initialize the mutex like a semaphore with initial count = 1 */
+
+      status = sem_init((sem_t*)&mutex->sem, pshared, 1);
+      if (status != OK)
+        {
+          ret = EINVAL;
+        }
+
+      /* Set up attributes unique to the mutex type */
+
+#ifdef CONFIG_MUTEX_TYPES
+      mutex->type   = type;
+      mutex->nlocks = 0;
+#endif
+    }
+
+  sdbg("Returning %d\n", ret);
+  return ret;
+}