1 files changed, 64 insertions, 0 deletions
diff --git a/cpukit/posix/src/pspinunlock.c b/cpukit/posix/src/pspinunlock.c
new file mode 100644
index 0000000000..8bbf4f2f61
--- /dev/null
+++ b/cpukit/posix/src/pspinunlock.c
@@ -0,0 +1,64 @@
+/*
+ *  POSIX Spinlock Manager -- Wait at a Spinlock
+ *
+ *  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 <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/posix/spinlock.h>
+
+/*
+ *  pthread_spin_unlock
+ *
+ *  This directive allows a thread to wait at a spinlock.
+ *
+ *  Input parameters:
+ *    spinlock    - spinlock id
+ *
+ *  Output parameters:
+ *    0          - if successful
+ *    error code - if unsuccessful
+ */
+
+int pthread_spin_unlock(
+  pthread_spinlock_t *spinlock
+)
+{
+  POSIX_Spinlock_Control  *the_spinlock = NULL;
+  Objects_Locations        location;
+  CORE_spinlock_Status     status;
+
+  if ( !spinlock )
+    return EINVAL;
+
+  the_spinlock = _POSIX_Spinlock_Get( spinlock, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+      status = _CORE_spinlock_Release( &the_spinlock->Spinlock );
+      _Thread_Enable_dispatch();
+      return _POSIX_Spinlock_Translate_core_spinlock_return_code( status );
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return EINVAL;
+}