From 1e1b3e00d1d7dcf8ae674db66250fbccab293f4f Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 17 May 1999 22:52:59 +0000
Subject: Split Message Manager into one routine per file.

---
 cpukit/rtems/src/msgqcreate.c | 168 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 168 insertions(+)
 create mode 100644 cpukit/rtems/src/msgqcreate.c

(limited to 'cpukit/rtems/src/msgqcreate.c')

diff --git a/cpukit/rtems/src/msgqcreate.c b/cpukit/rtems/src/msgqcreate.c
new file mode 100644
index 0000000000..11d1e7d297
--- /dev/null
+++ b/cpukit/rtems/src/msgqcreate.c
@@ -0,0 +1,168 @@
+/*
+ *  Message Queue Manager
+ *
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  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/sysstate.h>
+#include <rtems/score/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/coremsg.h>
+#include <rtems/score/object.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
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/attr.h>
+#include <rtems/rtems/message.h>
+#include <rtems/rtems/options.h>
+#include <rtems/rtems/support.h>
+
+/*PAGE
+ *
+ *  rtems_message_queue_create
+ *
+ *  This directive creates a message queue by allocating and initializing
+ *  a message queue data structure.
+ *
+ *  Input parameters:
+ *    name             - user defined queue name
+ *    count            - maximum message and reserved buffer count
+ *    max_message_size - maximum size of each message
+ *    attribute_set    - process method
+ *    id               - pointer to queue
+ *
+ *  Output parameters:
+ *    id                - queue id
+ *    RTEMS_SUCCESSFUL  - if successful
+ *    error code        - if unsuccessful
+ */
+
+rtems_status_code rtems_message_queue_create(
+  rtems_name          name,
+  unsigned32          count,
+  unsigned32          max_message_size,
+  rtems_attribute     attribute_set,
+  Objects_Id         *id
+)
+{
+  register Message_queue_Control *the_message_queue;
+  CORE_message_queue_Attributes   the_message_queue_attributes;
+  void                           *handler;
+#if defined(RTEMS_MULTIPROCESSING)
+  boolean                         is_global;
+#endif
+
+  if ( !rtems_is_name_valid( name ) )
+    return RTEMS_INVALID_NAME;
+
+#if defined(RTEMS_MULTIPROCESSING)
+  if ( (is_global = _Attributes_Is_global( attribute_set ) ) && 
+       !_System_state_Is_multiprocessing )
+    return RTEMS_MP_NOT_CONFIGURED;
+#endif
+
+  if (count == 0)
+      return RTEMS_INVALID_NUMBER;
+
+  if (max_message_size == 0)
+      return RTEMS_INVALID_SIZE;
+
+#if defined(RTEMS_MULTIPROCESSING)
+#if 1
+  /*
+   * I am not 100% sure this should be an error.
+   * It seems reasonable to create a que with a large max size,
+   * and then just send smaller msgs from remote (or all) nodes.
+   */
+  
+  if ( is_global && (_MPCI_table->maximum_packet_size < max_message_size) )
+    return RTEMS_INVALID_SIZE;
+#endif
+#endif
+       
+  _Thread_Disable_dispatch();              /* protects object pointer */
+
+  the_message_queue = _Message_queue_Allocate( count, max_message_size );
+
+  if ( !the_message_queue ) {
+    _Thread_Enable_dispatch();
+    return RTEMS_TOO_MANY;
+  }
+
+#if defined(RTEMS_MULTIPROCESSING)
+  if ( is_global &&
+    !( _Objects_MP_Allocate_and_open( &_Message_queue_Information,
+                              name, the_message_queue->Object.id, FALSE ) ) ) {
+    _Message_queue_Free( the_message_queue );
+    _Thread_Enable_dispatch();
+    return RTEMS_TOO_MANY;
+  }
+#endif
+
+  the_message_queue->attribute_set = attribute_set;
+
+  if (_Attributes_Is_priority( attribute_set ) )
+    the_message_queue_attributes.discipline = 
+                                      CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY;
+  else
+    the_message_queue_attributes.discipline =
+                                      CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO;
+
+  handler = NULL;
+#if defined(RTEMS_MULTIPROCESSING)
+  handler = _Message_queue_MP_Send_extract_proxy;
+#endif
+
+  if ( ! _CORE_message_queue_Initialize(
+           &the_message_queue->message_queue,
+           OBJECTS_RTEMS_MESSAGE_QUEUES,
+           &the_message_queue_attributes,
+           count,
+           max_message_size,
+           handler ) ) {
+#if defined(RTEMS_MULTIPROCESSING)
+    if ( is_global )
+        _Objects_MP_Close(
+          &_Message_queue_Information, the_message_queue->Object.id);
+#endif
+
+    _Message_queue_Free( the_message_queue );
+    _Thread_Enable_dispatch();
+    return RTEMS_TOO_MANY;
+  }
+
+  _Objects_Open(
+    &_Message_queue_Information,
+    &the_message_queue->Object,
+    &name
+  );
+
+  *id = the_message_queue->Object.id;
+
+#if defined(RTEMS_MULTIPROCESSING)
+  if ( is_global )
+    _Message_queue_MP_Send_process_packet(
+      MESSAGE_QUEUE_MP_ANNOUNCE_CREATE,
+      the_message_queue->Object.id,
+      name,
+      0
+    );
+#endif
+
+  _Thread_Enable_dispatch();
+  return RTEMS_SUCCESSFUL;
+}
-- 
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