From cc2bc3025c6ec078f8428116b3b45a14c0d017e7 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 17 May 1999 23:06:03 +0000
Subject: Split Event Manager into one routine per file.

---
 cpukit/rtems/src/eventsurrender.c | 106 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 cpukit/rtems/src/eventsurrender.c

(limited to 'cpukit/rtems/src/eventsurrender.c')

diff --git a/cpukit/rtems/src/eventsurrender.c b/cpukit/rtems/src/eventsurrender.c
new file mode 100644
index 0000000000..957171c709
--- /dev/null
+++ b/cpukit/rtems/src/eventsurrender.c
@@ -0,0 +1,106 @@
+/*
+ *  Event 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/event.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/rtems/options.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/rtems/tasks.h>
+
+/*PAGE
+ *
+ *  _Event_Surrender
+ *
+ *  This routines remove a thread from the specified threadq.
+ *
+ *  Input parameters:
+ *    the_thread - pointer to thread to be dequeued
+ *
+ *  Output parameters: NONE
+ *
+ *  INTERRUPT LATENCY:
+ *    before flash
+ *    after flash
+ *    check sync
+ */
+
+void _Event_Surrender(
+  Thread_Control *the_thread
+)
+{
+  ISR_Level           level;
+  rtems_event_set     pending_events;
+  rtems_event_set     event_condition;
+  rtems_event_set     seized_events;
+  rtems_option        option_set;
+  RTEMS_API_Control  *api;
+
+  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
+
+  option_set = (rtems_option) the_thread->Wait.option;
+
+  _ISR_Disable( level );
+  pending_events  = api->pending_events;
+  event_condition = (rtems_event_set) the_thread->Wait.count;
+
+  seized_events = _Event_sets_Get( pending_events, event_condition );
+
+  if ( !_Event_sets_Is_empty( seized_events ) ) {
+    if ( _States_Is_waiting_for_event( the_thread->current_state ) ) {
+      if ( seized_events == event_condition || _Options_Is_any( option_set ) ) {
+        api->pending_events =
+           _Event_sets_Clear( pending_events, seized_events );
+        *(rtems_event_set *)the_thread->Wait.return_argument = seized_events;
+
+        _ISR_Flash( level );
+
+        if ( !_Watchdog_Is_active( &the_thread->Timer ) ) {
+          _ISR_Enable( level );
+          _Thread_Unblock( the_thread );
+        }
+        else {
+          _Watchdog_Deactivate( &the_thread->Timer );
+          _ISR_Enable( level );
+          (void) _Watchdog_Remove( &the_thread->Timer );
+          _Thread_Unblock( the_thread );
+        }
+        return;
+      }
+    }
+
+    switch ( _Event_Sync_state ) {
+      case EVENT_SYNC_SYNCHRONIZED:
+      case EVENT_SYNC_SATISFIED:
+        break;
+ 
+      case EVENT_SYNC_NOTHING_HAPPENED:
+      case EVENT_SYNC_TIMEOUT:
+        if ( !_Thread_Is_executing( the_thread ) )
+          break;
+
+        if ( seized_events == event_condition || _Options_Is_any(option_set) ) {
+          api->pending_events = 
+               _Event_sets_Clear( pending_events,seized_events );
+          *(rtems_event_set *)the_thread->Wait.return_argument = seized_events;
+          _Event_Sync_state = EVENT_SYNC_SATISFIED;
+        }
+        break;
+    }
+  }
+  _ISR_Enable( level );
+}
-- 
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