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-rw-r--r--cpukit/posix/src/condsignalsupp.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/cpukit/posix/src/condsignalsupp.c b/cpukit/posix/src/condsignalsupp.c
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+++ b/cpukit/posix/src/condsignalsupp.c
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+/*
+ * 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 <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/score/object.h>
+#include <rtems/score/states.h>
+#include <rtems/score/watchdog.h>
+#include <rtems/posix/cond.h>
+#include <rtems/posix/time.h>
+#include <rtems/posix/mutex.h>
+
+/*PAGE
+ *
+ * _POSIX_Condition_variables_Signal_support
+ *
+ * A support routine which implements guts of the broadcast and single task
+ * wake up version of the "signal" operation.
+ */
+
+int _POSIX_Condition_variables_Signal_support(
+ pthread_cond_t *cond,
+ bool is_broadcast
+)
+{
+ register POSIX_Condition_variables_Control *the_cond;
+ Objects_Locations location;
+ Thread_Control *the_thread;
+
+ the_cond = _POSIX_Condition_variables_Get( cond, &location );
+ switch ( location ) {
+
+ case OBJECTS_LOCAL:
+ do {
+ the_thread = _Thread_queue_Dequeue( &the_cond->Wait_queue );
+ if ( !the_thread )
+ the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX;
+ } while ( is_broadcast && the_thread );
+
+ _Thread_Enable_dispatch();
+
+ return 0;
+
+#if defined(RTEMS_MULTIPROCESSING)
+ case OBJECTS_REMOTE:
+#endif
+ case OBJECTS_ERROR:
+ break;
+ }
+
+ return EINVAL;
+}