source: rtems/c/src/lib/libbsp/shmdr/addlq.c @ 48bfd992

4.104.114.84.95
Last change on this file since 48bfd992 was 48bfd992, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 30, 1999 at 7:58:02 PM

Renamed shm.h to shm_driver.h to avoid conflicts with POSIX shm.h.

Renamed file shmsupp/intr.c in some BSPs to shmsupp/cause_intr.c to
avoid conflict with rtems/src/intr.c (Classic API Interrupt Manager).

  • Property mode set to 100644
File size: 1.0 KB
Line 
1/*  void Shm_Locked_queue_Add( lq_cb, ecb )
2 *
3 *  This routine adds an envelope control block to a shared memory queue.
4 *
5 *  Input parameters:
6 *    lq_cb - pointer to a locked queue control block
7 *    ecb   - pointer to an envelope control block
8 *
9 *  Output parameters: NONE
10 *
11 *  COPYRIGHT (c) 1989-1999.
12 *  On-Line Applications Research Corporation (OAR).
13 *
14 *  The license and distribution terms for this file may be
15 *  found in the file LICENSE in this distribution or at
16 *  http://www.OARcorp.com/rtems/license.html.
17 *
18 *  $Id$
19 */
20
21#include <rtems.h>
22#include "shm_driver.h"
23
24void Shm_Locked_queue_Add(
25  Shm_Locked_queue_Control *lq_cb,
26  Shm_Envelope_control     *ecb
27)
28{
29  rtems_unsigned32 index;
30
31  ecb->next  = Shm_Locked_queue_End_of_list;
32  ecb->queue = lq_cb->owner;
33  index      = ecb->index;
34
35  Shm_Lock( lq_cb );
36    if ( Shm_Convert(lq_cb->front) != Shm_Locked_queue_End_of_list )
37      Shm_Envelopes[ Shm_Convert(lq_cb->rear) ].next = index;
38    else
39      lq_cb->front = index;
40    lq_cb->rear  = index;
41  Shm_Unlock( lq_cb );
42}
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