1 files changed, 79 insertions, 0 deletions
diff --git a/c/src/exec/score/src/threadqtimeout.c b/c/src/exec/score/src/threadqtimeout.c
new file mode 100644
index 0000000000..8d52a838ac
--- /dev/null
+++ b/c/src/exec/score/src/threadqtimeout.c
@@ -0,0 +1,79 @@
+/*
+ *  Thread Queue Handler
+ *
+ *
+ *  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/score/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+#include <rtems/score/tqdata.h>
+
+/*PAGE
+ *
+ *  _Thread_queue_Timeout
+ *
+ *  This routine processes a thread which timeouts while waiting on
+ *  a thread queue. It is called by the watchdog handler.
+ *
+ *  Input parameters:
+ *    id - thread id
+ *
+ *  Output parameters: NONE
+ */
+
+void _Thread_queue_Timeout(
+  Objects_Id  id,
+  void       *ignored
+)
+{
+  Thread_Control       *the_thread;
+  Thread_queue_Control *the_thread_queue;
+  Objects_Locations     location;
+
+  the_thread = _Thread_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+    case OBJECTS_REMOTE:  /* impossible */
+      break;
+    case OBJECTS_LOCAL:
+      the_thread_queue = the_thread->Wait.queue;
+
+      /*
+       *  If the_thread_queue is not synchronized, then it is either
+       *  "nothing happened", "timeout", or "satisfied".   If the_thread
+       *  is the executing thread, then it is in the process of blocking
+       *  and it is the thread which is responsible for the synchronization
+       *  process.
+       *
+       *  If it is not satisfied, then it is "nothing happened" and
+       *  this is the "timeout" transition.  After a request is satisfied,
+       *  a timeout is not allowed to occur.
+       */
+
+      if ( the_thread_queue->sync_state != THREAD_QUEUE_SYNCHRONIZED &&
+           _Thread_Is_executing( the_thread ) ) {
+        if ( the_thread_queue->sync_state != THREAD_QUEUE_SATISFIED )
+          the_thread_queue->sync_state = THREAD_QUEUE_TIMEOUT;
+      } else {
+        the_thread->Wait.return_code = the_thread->Wait.queue->timeout_status;
+        _Thread_queue_Extract( the_thread->Wait.queue, the_thread );
+      }
+      _Thread_Unnest_dispatch();
+      break;
+  }
+}
+