1 files changed, 64 insertions, 0 deletions
diff --git a/cpukit/posix/src/mutexunlock.c b/cpukit/posix/src/mutexunlock.c
new file mode 100644
index 0000000000..cdcd03f50c
--- /dev/null
+++ b/cpukit/posix/src/mutexunlock.c
@@ -0,0 +1,64 @@
+/*
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <pthread.h>
+
+#include <rtems/system.h>
+#include <rtems/score/coremutex.h>
+#include <rtems/score/watchdog.h>
+#if defined(RTEMS_MULTIPROCESSING)
+#include <rtems/score/mpci.h>
+#endif
+#include <rtems/posix/mutex.h>
+#include <rtems/posix/priority.h>
+#include <rtems/posix/time.h>
+
+/*PAGE
+ *
+ *  11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
+ *
+ *  NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29
+ */
+
+int pthread_mutex_unlock(
+  pthread_mutex_t           *mutex
+)
+{
+  register POSIX_Mutex_Control *the_mutex;
+  Objects_Locations             location;
+  CORE_mutex_Status             status;
+
+  the_mutex = _POSIX_Mutex_Get( mutex, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+      status = _CORE_mutex_Surrender(
+        &the_mutex->Mutex,
+        the_mutex->Object.id,
+        NULL
+      );
+      _Thread_Enable_dispatch();
+      return _POSIX_Mutex_Translate_core_mutex_return_code( status );
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return EINVAL;
+}