1 files changed, 134 insertions, 0 deletions
diff --git a/c/src/exec/rtems/src/semdelete.c b/c/src/exec/rtems/src/semdelete.c
new file mode 100644
index 0000000000..8062bb7064
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+++ b/c/src/exec/rtems/src/semdelete.c
@@ -0,0 +1,134 @@
+/*
+ *  Semaphore Manager
+ *
+ *  DESCRIPTION:
+ *
+ *  This package is the implementation of the Semaphore Manager.
+ *  This manager utilizes standard Dijkstra counting semaphores to provide
+ *  synchronization and mutual exclusion capabilities.
+ *
+ *  Directives provided are:
+ *
+ *     + create a semaphore
+ *     + get an ID of a semaphore
+ *     + delete a semaphore
+ *     + acquire a semaphore
+ *     + release a semaphore
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/support.h>
+#include <rtems/rtems/attr.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/rtems/options.h>
+#include <rtems/rtems/sem.h>
+#include <rtems/score/coremutex.h>
+#include <rtems/score/coresem.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#if defined(RTEMS_MULTIPROCESSING)
+#include <rtems/score/mpci.h>
+#endif
+#include <rtems/score/sysstate.h>
+
+#include <rtems/score/interr.h>
+
+/*PAGE
+ *
+ *  rtems_semaphore_delete
+ *
+ *  This directive allows a thread to delete a semaphore specified by
+ *  the semaphore id.  The semaphore is freed back to the inactive
+ *  semaphore chain.
+ *
+ *  Input parameters:
+ *    id - semaphore id
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code        - if unsuccessful
+ */
+
+rtems_status_code rtems_semaphore_delete(
+  Objects_Id id
+)
+{
+  register Semaphore_Control *the_semaphore;
+  Objects_Locations           location;
+
+  the_semaphore = _Semaphore_Get( id, &location );
+  switch ( location ) {
+
+    case OBJECTS_REMOTE:
+#if defined(RTEMS_MULTIPROCESSING)
+      _Thread_Dispatch();
+      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
+#endif
+
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+
+    case OBJECTS_LOCAL:
+      if ( _Attributes_Is_binary_semaphore( the_semaphore->attribute_set) ) { 
+        if ( _CORE_mutex_Is_locked( &the_semaphore->Core_control.mutex ) ) {
+          _Thread_Enable_dispatch();
+          return RTEMS_RESOURCE_IN_USE;
+        }
+        else
+          _CORE_mutex_Flush(
+            &the_semaphore->Core_control.mutex, 
+#if defined(RTEMS_MULTIPROCESSING)
+            _Semaphore_MP_Send_object_was_deleted,
+#else
+            NULL,
+#endif
+            CORE_MUTEX_WAS_DELETED
+          );
+      }
+      else
+        _CORE_semaphore_Flush(
+          &the_semaphore->Core_control.semaphore, 
+#if defined(RTEMS_MULTIPROCESSING)
+          _Semaphore_MP_Send_object_was_deleted,
+#else
+          NULL,
+#endif
+          CORE_SEMAPHORE_WAS_DELETED
+        );
+
+      _Objects_Close( &_Semaphore_Information, &the_semaphore->Object );
+
+      _Semaphore_Free( the_semaphore );
+
+#if defined(RTEMS_MULTIPROCESSING)
+      if ( _Attributes_Is_global( the_semaphore->attribute_set ) ) {
+
+        _Objects_MP_Close( &_Semaphore_Information, the_semaphore->Object.id );
+
+        _Semaphore_MP_Send_process_packet(
+          SEMAPHORE_MP_ANNOUNCE_DELETE,
+          the_semaphore->Object.id,
+          0,                         /* Not used */
+          0                          /* Not used */
+        );
+      }
+#endif
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}