1 files changed, 72 insertions, 0 deletions
diff --git a/cpukit/rtems/src/regiongetsegmentsize.c b/cpukit/rtems/src/regiongetsegmentsize.c
new file mode 100644
index 0000000000..726f47cf2d
--- /dev/null
+++ b/cpukit/rtems/src/regiongetsegmentsize.c
@@ -0,0 +1,72 @@
+/*
+ *  Region Manager
+ *
+ *
+ *  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/score/object.h>
+#include <rtems/rtems/options.h>
+#include <rtems/rtems/region.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+
+/*PAGE
+ *
+ *  rtems_region_get_segment_size
+ *
+ *  This directive will return the size of the segment indicated
+ *
+ *  Input parameters:
+ *    id         - region id
+ *    segment    - segment address
+ *    size       - pointer to segment size in bytes
+ *
+ *  Output parameters:
+ *    size       - segment size in bytes filled in
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code - if unsuccessful
+ */
+
+rtems_status_code rtems_region_get_segment_size(
+  Objects_Id         id,
+  void              *segment,
+  unsigned32        *size
+)
+{
+  register Region_Control *the_region;
+  Objects_Locations        location;
+  Thread_Control          *executing;
+
+  executing  = _Thread_Executing;
+  the_region = _Region_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_REMOTE:        /* this error cannot be returned */
+      return RTEMS_INTERNAL_ERROR;
+
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+
+    case OBJECTS_LOCAL:
+
+      if ( _Heap_Size_of_user_area( &the_region->Memory, segment, size ) ) {
+        _Thread_Enable_dispatch();
+        return RTEMS_SUCCESSFUL;
+      }
+      _Thread_Enable_dispatch();
+      return RTEMS_INVALID_ADDRESS;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}