From 9c191eea63fd6c5511c01186297722e594220032 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 25 Sep 2006 13:36:58 +0000
Subject: 	* score/Makefile.am, score/preinstall.am, 
 score/include/rtems/score/coresem.h, 	score/include/rtems/score/object.h, 
 score/include/rtems/score/states.h, 	score/inline/rtems/score/coresem.inl:
 Add SuperCore Barriers, 	SpinLocks and a partial implementation of
 RWLocks. 	* score/include/rtems/score/corebarrier.h, 
 score/include/rtems/score/corerwlock.h, 
 score/include/rtems/score/corespinlock.h, 
 score/inline/rtems/score/corebarrier.inl, 
 score/inline/rtems/score/corerwlock.inl, 
 score/inline/rtems/score/corespinlock.inl, 
 score/macros/rtems/score/corebarrier.inl, 
 score/macros/rtems/score/corerwlock.inl, 
 score/macros/rtems/score/corespinlock.inl, score/src/corebarrier.c, 
 score/src/corebarrierrelease.c, score/src/corebarrierwait.c, 
 score/src/corerwlock.c, score/src/corerwlockobtainread.c, 
 score/src/corerwlockobtainwrite.c, score/src/corerwlockrelease.c, 
 score/src/corespinlock.c, score/src/corespinlockrelease.c, 
 score/src/corespinlockwait.c: New files.

---
 cpukit/score/src/corebarrierrelease.c | 68 +++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 cpukit/score/src/corebarrierrelease.c

(limited to 'cpukit/score/src/corebarrierrelease.c')

diff --git a/cpukit/score/src/corebarrierrelease.c b/cpukit/score/src/corebarrierrelease.c
new file mode 100644
index 0000000000..a93efa4c70
--- /dev/null
+++ b/cpukit/score/src/corebarrierrelease.c
@@ -0,0 +1,68 @@
+/*
+ *  SuperCore Barrier Handler
+ *
+ *  DESCRIPTION:
+ *
+ *  This package is part of the implementation of the SuperCore Barrier Handler.
+ *
+ *  COPYRIGHT (c) 1989-2006.
+ *  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/score/isr.h>
+#include <rtems/score/corebarrier.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
+
+/*PAGE
+ *
+ *  _CORE_barrier_Release
+ *
+ *  Input parameters:
+ *    the_barrier            - the barrier to be flushed
+ *    id                     - id of the object for a remote unblock
+ *    api_barrier_mp_support - api dependent MP support actions
+ *
+ *  Output parameters:
+ *    CORE_BARRIER_STATUS_SUCCESSFUL - if successful
+ *    core error code                - if unsuccessful
+ *
+ *  Output parameters:
+ *    returns number of threads unblocked
+ */
+
+uint32_t _CORE_barrier_Release(
+  CORE_barrier_Control                *the_barrier,
+  Objects_Id                           id,
+  CORE_barrier_API_mp_support_callout  api_barrier_mp_support
+)
+{
+  Thread_Control *the_thread;
+  uint32_t        count;
+
+  count = 0;
+  while ( (the_thread = _Thread_queue_Dequeue(&the_barrier->Wait_queue)) ) {
+#if defined(RTEMS_MULTIPROCESSING)
+    if ( !_Objects_Is_local_id( the_thread->Object.id ) )
+      (*api_barrier_mp_support) ( the_thread, id );
+#endif
+    count++;
+  }
+  the_barrier->number_of_waiting_threads = 0;
+  return count;
+}
-- 
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