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authorJennifer Averett <Jennifer.Averett@OARcorp.com>2000-01-13 18:32:09 +0000
committerJennifer Averett <Jennifer.Averett@OARcorp.com>2000-01-13 18:32:09 +0000
commitd65c376845847ea7a697904b5222c39331bd56ec (patch)
tree46afa4a044cc79be21314657baad84bfda5ff235 /c/src/exec/score/src
parente7d76dc8a997294baf3dca1d8f4d18b77983b256 (diff)
downloadrtems-d65c376845847ea7a697904b5222c39331bd56ec.tar.bz2
+ Added and yellow line tested _CORE_message_queue_Flush_waiting_threads
and _CORE_message_queue_Insert_message for posix message queues. + Yellow line tested new source
Diffstat (limited to 'c/src/exec/score/src')
-rw-r--r--c/src/exec/score/src/Makefile.am3
-rw-r--r--c/src/exec/score/src/coremsgflushwait.c70
-rw-r--r--c/src/exec/score/src/coremsginsert.c102
3 files changed, 174 insertions, 1 deletions
diff --git a/c/src/exec/score/src/Makefile.am b/c/src/exec/score/src/Makefile.am
index 04947cec47..a75b394a85 100644
--- a/c/src/exec/score/src/Makefile.am
+++ b/c/src/exec/score/src/Makefile.am
@@ -11,7 +11,8 @@ include $(top_srcdir)/../../../automake/lib.am
MP_C_FILES = mpci.c objectmp.c threadmp.c
CORE_MESSAGE_QUEUE_C_FILES = coremsg.c coremsgbroadcast.c coremsgclose.c \
- coremsgflush.c coremsgflushsupp.c coremsgseize.c coremsgsubmit.c
+ coremsgflush.c coremsgflushwait.c coremsginsert.c coremsgflushsupp.c \
+ coremsgseize.c coremsgsubmit.c
CORE_MUTEX_C_FILES = coremutex.c coremutexflush.c coremutexseize.c \
coremutexsurrender.c
diff --git a/c/src/exec/score/src/coremsgflushwait.c b/c/src/exec/score/src/coremsgflushwait.c
new file mode 100644
index 0000000000..bda8143ffd
--- /dev/null
+++ b/c/src/exec/score/src/coremsgflushwait.c
@@ -0,0 +1,70 @@
+/*
+ * 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.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#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_waiting_threads
+ *
+ * This function flushes the message_queue's task wait 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
+ */
+
+void _CORE_message_queue_Flush_waiting_threads(
+ CORE_message_queue_Control *the_message_queue
+)
+{
+ /* XXX this is not supported for global message queues */
+
+ /*
+ * IF there are no pending messages,
+ * THEN threads may be blocked waiting to RECEIVE a message,
+ *
+ * IF the pending message queue is full
+ * THEN threads may be blocked waiting to SEND a message
+ *
+ * But in either case, we will return "unsatisfied nowait"
+ * to indicate that the blocking condition was not satisfied
+ * and that the blocking state was canceled.
+ */
+
+ _Thread_queue_Flush(
+ &the_message_queue->Wait_queue,
+ NULL,
+ CORE_MESSAGE_QUEUE_STATUS_UNSATISFIED_NOWAIT
+ );
+}
+
diff --git a/c/src/exec/score/src/coremsginsert.c b/c/src/exec/score/src/coremsginsert.c
new file mode 100644
index 0000000000..f468334c97
--- /dev/null
+++ b/c/src/exec/score/src/coremsginsert.c
@@ -0,0 +1,102 @@
+/*
+ * 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.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#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_Insert_message
+ *
+ * This kernel routine inserts the specified message into the
+ * message queue. It is assumed that the message has been filled
+ * in before this routine is called.
+ *
+ * Input parameters:
+ * the_message_queue - pointer to message queue
+ * the_message - message to insert
+ * priority - insert indication
+ *
+ * Output parameters: NONE
+ *
+ * INTERRUPT LATENCY:
+ * insert
+ */
+
+void _CORE_message_queue_Insert_message(
+ CORE_message_queue_Control *the_message_queue,
+ CORE_message_queue_Buffer_control *the_message,
+ CORE_message_queue_Submit_types submit_type
+)
+{
+ the_message_queue->number_of_pending_messages += 1;
+
+ the_message->priority = submit_type;
+
+ switch ( submit_type ) {
+ case CORE_MESSAGE_QUEUE_SEND_REQUEST:
+ _CORE_message_queue_Append( the_message_queue, the_message );
+ break;
+ case CORE_MESSAGE_QUEUE_URGENT_REQUEST:
+ _CORE_message_queue_Prepend( the_message_queue, the_message );
+ break;
+ default:
+ /* XXX interrupt critical section needs to be addressed */
+ {
+ CORE_message_queue_Buffer_control *this_message;
+ Chain_Node *the_node;
+ Chain_Control *the_header;
+
+ the_header = &the_message_queue->Pending_messages;
+ the_node = the_header->first;
+ while ( !_Chain_Is_tail( the_header, the_node ) ) {
+
+ this_message = (CORE_message_queue_Buffer_control *) the_node;
+
+ if ( this_message->priority <= the_message->priority ) {
+ the_node = the_node->next;
+ continue;
+ }
+
+ break;
+ }
+ _Chain_Insert( the_node->previous, &the_message->Node );
+ }
+ break;
+ }
+
+ /*
+ * According to POSIX, does this happen before or after the message
+ * is actually enqueued. It is logical to think afterwards, because
+ * the message is actually in the queue at this point.
+ */
+
+ if ( the_message_queue->number_of_pending_messages == 1 &&
+ the_message_queue->notify_handler )
+ (*the_message_queue->notify_handler)( the_message_queue->notify_argument );
+}