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Diffstat (limited to 'cpukit/score/src/coremsgflush.c')
-rw-r--r-- | cpukit/score/src/coremsgflush.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/cpukit/score/src/coremsgflush.c b/cpukit/score/src/coremsgflush.c new file mode 100644 index 0000000000..1f4ee1839b --- /dev/null +++ b/cpukit/score/src/coremsgflush.c @@ -0,0 +1,58 @@ +/* + * CORE Message Queue Handler + * + * DESCRIPTION: + * + * This package is the implementation of the CORE Message Queue Handler. + * This core object provides task synchronization and communication functions + * via messages passed to queue objects. + * + * COPYRIGHT (c) 1989-1999. + * 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/chain.h> +#include <rtems/score/isr.h> +#include <rtems/score/object.h> +#include <rtems/score/coremsg.h> +#include <rtems/score/states.h> +#include <rtems/score/thread.h> +#include <rtems/score/wkspace.h> +#if defined(RTEMS_MULTIPROCESSING) +#include <rtems/score/mpci.h> +#endif + +/*PAGE + * + * _CORE_message_queue_Flush + * + * This function flushes the message_queue's pending message queue. The + * number of messages flushed from the queue is returned. + * + * Input parameters: + * the_message_queue - the message_queue to be flushed + * + * Output parameters: + * returns - the number of messages flushed from the queue + */ + +uint32_t _CORE_message_queue_Flush( + CORE_message_queue_Control *the_message_queue +) +{ + if ( the_message_queue->number_of_pending_messages != 0 ) + return _CORE_message_queue_Flush_support( the_message_queue ); + else + return 0; +} |