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/*  coremsg.inl
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 *
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 *  This include file contains the static inline implementation of all
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 *  inlined routines in the Core Message Handler.
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: coremsg.inl,v 1.2 2001-09-27 11:59:34 chris Exp $
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 */
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#ifndef __CORE_MESSAGE_QUEUE_inl
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#define __CORE_MESSAGE_QUEUE_inl
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#include    /* needed for memcpy */
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/*PAGE
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 *
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 *  _CORE_message_queue_Send
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine sends a message to the end of the specified message queue.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Send(
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  CORE_message_queue_Control                *the_message_queue,
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  void                                      *buffer,
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  unsigned32                                 size,
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  Objects_Id                                 id,
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  CORE_message_queue_API_mp_support_callout  api_message_queue_mp_support,
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  boolean                                    wait,
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  Watchdog_Interval                          timeout
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)
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{
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  _CORE_message_queue_Submit(
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    the_message_queue,
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    buffer,
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    size,
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    id,
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#if defined(RTEMS_MULTIPROCESSING)
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    api_message_queue_mp_support,
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#else
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    NULL,
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#endif
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    CORE_MESSAGE_QUEUE_SEND_REQUEST,
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    wait,     /* sender may block */
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    timeout   /* timeout interval */
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  );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Urgent
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine sends a message to the front of the specified message queue.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Urgent(
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  CORE_message_queue_Control                *the_message_queue,
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  void                                      *buffer,
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  unsigned32                                 size,
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  Objects_Id                                 id,
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  CORE_message_queue_API_mp_support_callout  api_message_queue_mp_support,
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  boolean                                    wait,
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  Watchdog_Interval                          timeout
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)
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{
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  _CORE_message_queue_Submit(
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    the_message_queue,
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    buffer,
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    size,
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    id,
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#if defined(RTEMS_MULTIPROCESSING)
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    api_message_queue_mp_support,
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#else
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    NULL,
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#endif
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    CORE_MESSAGE_QUEUE_URGENT_REQUEST,
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    wait,     /* sender may block */
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    timeout   /* timeout interval */
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 );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Copy_buffer
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine copies the contents of the source message buffer
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 *  to the destination message buffer.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Copy_buffer (
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  void      *source,
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  void      *destination,
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  unsigned32 size
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)
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{
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  memcpy(destination, source, size);
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Allocate_message_buffer
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 *
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 *  DESCRIPTION:
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 *
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 *  This function allocates a message buffer from the inactive
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 *  message buffer chain.
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 */
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RTEMS_INLINE_ROUTINE CORE_message_queue_Buffer_control *
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_CORE_message_queue_Allocate_message_buffer (
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    CORE_message_queue_Control *the_message_queue
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)
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{
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   return (CORE_message_queue_Buffer_control *)
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     _Chain_Get( &the_message_queue->Inactive_messages );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Free_message_buffer
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine frees a message buffer to the inactive
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 *  message buffer chain.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Free_message_buffer (
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    CORE_message_queue_Control        *the_message_queue,
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    CORE_message_queue_Buffer_control *the_message
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)
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{
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  _Chain_Append( &the_message_queue->Inactive_messages, &the_message->Node );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Get_pending_message
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 *
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 *  DESCRIPTION:
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 *
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 *  This function removes the first message from the_message_queue
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 *  and returns a pointer to it.
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 */
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RTEMS_INLINE_ROUTINE
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  CORE_message_queue_Buffer_control *_CORE_message_queue_Get_pending_message (
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  CORE_message_queue_Control *the_message_queue
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)
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{
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  return (CORE_message_queue_Buffer_control *)
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    _Chain_Get_unprotected( &the_message_queue->Pending_messages );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Is_priority
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 *
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 *  DESCRIPTION:
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 *
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 *  This function returns TRUE if the priority attribute is
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 *  enabled in the attribute_set and FALSE otherwise.
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 */
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RTEMS_INLINE_ROUTINE boolean _CORE_message_queue_Is_priority(
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  CORE_message_queue_Attributes *the_attribute
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)
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{
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  return (the_attribute->discipline == CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY);
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Append
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine places the_message at the rear of the outstanding
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 *  messages on the_message_queue.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Append (
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  CORE_message_queue_Control        *the_message_queue,
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  CORE_message_queue_Buffer_control *the_message
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)
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{
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  _Chain_Append( &the_message_queue->Pending_messages, &the_message->Node );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Prepend
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine places the_message at the front of the outstanding
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 *  messages on the_message_queue.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Prepend (
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  CORE_message_queue_Control        *the_message_queue,
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  CORE_message_queue_Buffer_control *the_message
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)
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{
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  _Chain_Prepend(
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    &the_message_queue->Pending_messages,
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    &the_message->Node
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  );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Is_null
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 *
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 *  DESCRIPTION:
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 *
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 *  This function returns TRUE if the_message_queue is TRUE and FALSE otherwise.
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 */
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RTEMS_INLINE_ROUTINE boolean _CORE_message_queue_Is_null (
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  CORE_message_queue_Control *the_message_queue
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)
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{
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  return ( the_message_queue == NULL  );
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Is_notify_enabled
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 *
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 *  DESCRIPTION:
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 *
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 *  This function returns TRUE if notification is enabled on this message
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 *  queue and FALSE otherwise.
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 */
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RTEMS_INLINE_ROUTINE boolean _CORE_message_queue_Is_notify_enabled (
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  CORE_message_queue_Control *the_message_queue
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)
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{
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  return (the_message_queue->notify_handler != NULL);
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}
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/*PAGE
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 *
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 *  _CORE_message_queue_Set_notify
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine initializes the notification information for the_message_queue.
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 */
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RTEMS_INLINE_ROUTINE void _CORE_message_queue_Set_notify (
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  CORE_message_queue_Control        *the_message_queue,
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  CORE_message_queue_Notify_Handler  the_handler,
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  void                              *the_argument
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)
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{
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  the_message_queue->notify_handler  = the_handler;
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  the_message_queue->notify_argument = the_argument;
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}
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#endif
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/* end of include file */

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