From 4dc89814e10296b8f7212e949a97730abc9032e4 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 2 Nov 1999 17:00:35 +0000
Subject: Split mqueue.c into a variety of files.

---
 cpukit/posix/src/mqueuenotify.c | 97 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 cpukit/posix/src/mqueuenotify.c

(limited to 'cpukit/posix/src/mqueuenotify.c')

diff --git a/cpukit/posix/src/mqueuenotify.c b/cpukit/posix/src/mqueuenotify.c
new file mode 100644
index 0000000000..d50fd93565
--- /dev/null
+++ b/cpukit/posix/src/mqueuenotify.c
@@ -0,0 +1,97 @@
+/*
+ *  NOTE:  The structure of the routines is identical to that of POSIX
+ *         Message_queues to leave the option of having unnamed message
+ *         queues at a future date.  They are currently not part of the
+ *         POSIX standard but unnamed message_queues are.  This is also 
+ *         the reason for the apparently unnecessary tracking of 
+ *         the process_shared attribute.  [In addition to the fact that
+ *         it would be trivial to add pshared to the mq_attr structure
+ *         and have process private message queues.]
+ *
+ *         This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
+ *         time.
+ *
+ *  $Id$
+ */
+
+#include <stdarg.h>
+
+#include <pthread.h>
+#include <limits.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <mqueue.h>
+
+#include <rtems/system.h>
+#include <rtems/score/watchdog.h>
+#include <rtems/posix/seterr.h>
+#include <rtems/posix/mqueue.h>
+#include <rtems/posix/time.h>
+
+/*PAGE
+ *
+ *  _POSIX_Message_queue_Notify_handler
+ *
+ */
+
+void _POSIX_Message_queue_Notify_handler(
+  void    *user_data
+)
+{
+  POSIX_Message_queue_Control *the_mq;
+
+  the_mq = user_data;
+
+  /* XXX do something with signals here!!!! */
+}
+
+/*PAGE
+ *
+ *  15.2.6 Notify Process that a Message is Available on a Queue, 
+ *         P1003.1b-1993, p. 280
+ */
+
+int mq_notify(
+  mqd_t                  mqdes,
+  const struct sigevent *notification
+)
+{
+  register POSIX_Message_queue_Control *the_mq;
+  Objects_Locations                     location;
+ 
+  the_mq = _POSIX_Message_queue_Get( mqdes, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+      set_errno_and_return_minus_one( EBADF );
+    case OBJECTS_REMOTE:
+      _Thread_Dispatch();
+      return POSIX_MP_NOT_IMPLEMENTED();
+      set_errno_and_return_minus_one( EINVAL );
+    case OBJECTS_LOCAL:
+      if ( notification ) {
+        if ( _CORE_message_queue_Is_notify_enabled( &the_mq->Message_queue ) ) {
+          _Thread_Enable_dispatch();
+          set_errno_and_return_minus_one( EBUSY );
+        }
+
+        _CORE_message_queue_Set_notify( &the_mq->Message_queue, NULL, NULL );
+
+        the_mq->notification = *notification;
+      
+        _CORE_message_queue_Set_notify(
+          &the_mq->Message_queue,
+          _POSIX_Message_queue_Notify_handler,
+          the_mq
+        );
+      } else {
+
+        _CORE_message_queue_Set_notify( &the_mq->Message_queue, NULL, NULL );
+
+      }
+
+      _Thread_Enable_dispatch();
+      return 0;
+  }
+  return POSIX_BOTTOM_REACHED();
+}
+
-- 
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