1 files changed, 116 insertions, 0 deletions
diff --git a/cpukit/rtems/src/taskgetnote.c b/cpukit/rtems/src/taskgetnote.c
new file mode 100644
index 0000000000..46c28460a5
--- /dev/null
+++ b/cpukit/rtems/src/taskgetnote.c
@@ -0,0 +1,116 @@
+/*
+ *  RTEMS Task Manager
+ *
+ *
+ *  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 <rtems/system.h>
+#include <rtems/config.h>
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/support.h>
+#include <rtems/rtems/modes.h>
+#include <rtems/score/object.h>
+#include <rtems/score/stack.h>
+#include <rtems/score/states.h>
+#include <rtems/rtems/tasks.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/tod.h>
+#include <rtems/score/userext.h>
+#include <rtems/score/wkspace.h>
+#include <rtems/score/apiext.h>
+#include <rtems/score/sysstate.h>
+
+/*PAGE
+ *
+ *  rtems_task_get_note
+ *
+ *  This directive obtains the note from the specified notepad
+ *  of the specified thread.
+ *
+ *  Input parameters:
+ *    id      - thread id
+ *    notepad - notepad number
+ *    note    - pointer to note
+ *
+ *  Output parameters:
+ *    note             - filled in if successful
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code       - if unsuccessful
+ */
+
+rtems_status_code rtems_task_get_note(
+  rtems_id    id,
+  uint32_t    notepad,
+  uint32_t   *note
+)
+{
+  register Thread_Control *the_thread;
+  Objects_Locations        location;
+  RTEMS_API_Control       *api;
+
+  if ( !rtems_configuration_get_notepads_enabled() )
+    return RTEMS_NOT_CONFIGURED;
+
+  if ( !note )
+    return RTEMS_INVALID_ADDRESS;
+
+  /*
+   *  NOTE:  There is no check for < RTEMS_NOTEPAD_FIRST because that would
+   *         be checking an unsigned number for being negative.
+   */
+
+  if ( notepad > RTEMS_NOTEPAD_LAST )
+    return RTEMS_INVALID_NUMBER;
+
+  /*
+   *  Optimize the most likely case to avoid the Thread_Dispatch.
+   */
+
+  if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ||
+       _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) {
+      api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ];
+      *note = api->Notepads[ notepad ];
+      return RTEMS_SUCCESSFUL;
+  }
+
+  the_thread = _Thread_Get( id, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
+      *note = api->Notepads[ notepad ];
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+      _Thread_Executing->Wait.return_argument = note;
+
+      return _RTEMS_tasks_MP_Send_request_packet(
+        RTEMS_TASKS_MP_GET_NOTE_REQUEST,
+        id,
+        0,          /* Not used */
+        notepad,
+        0           /* Not used */
+      );
+#endif
+
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return RTEMS_INVALID_ID;
+}