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authorJoel Sherrill <joel.sherrill@OARcorp.com>2006-09-25 13:36:58 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>2006-09-25 13:36:58 +0000
commit9c191eea63fd6c5511c01186297722e594220032 (patch)
treed5ad903d3005a0c24511851d829e0a00b2c1c53c /cpukit/score/src/corebarrierrelease.c
parent2006-09-14 Joel Sherrill <joel@OARcorp.com> (diff)
downloadrtems-9c191eea63fd6c5511c01186297722e594220032.tar.bz2
* 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.
Diffstat (limited to 'cpukit/score/src/corebarrierrelease.c')
-rw-r--r--cpukit/score/src/corebarrierrelease.c68
1 files changed, 68 insertions, 0 deletions
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;
+}