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/* 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, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#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 );
}
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