blob: 2eace43e4d741b07971927b626ac09707b47c7d1 (
plain) (
tree)
|
|
/* void Shm_Locked_queue_Add( lq_cb, ecb )
*
* This routine adds an envelope control block to a shared memory queue.
*
* Input parameters:
* lq_cb - pointer to a locked queue control block
* ecb - pointer to an envelope control block
*
* Output parameters: NONE
*
* 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.h>
#include "shm.h"
void Shm_Locked_queue_Add(
Shm_Locked_queue_Control *lq_cb,
Shm_Envelope_control *ecb
)
{
rtems_unsigned32 index;
ecb->next = Shm_Locked_queue_End_of_list;
ecb->queue = lq_cb->owner;
index = ecb->index;
Shm_Lock( lq_cb );
if ( Shm_Convert(lq_cb->front) != Shm_Locked_queue_End_of_list )
Shm_Envelopes[ Shm_Convert(lq_cb->rear) ].next = index;
else
lq_cb->front = index;
lq_cb->rear = index;
Shm_Unlock( lq_cb );
}
|