4.104.114.84.95
Rev | Line | |
---|
[ac7d5ef0] | 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, 1990, 1991, 1992, 1993, 1994. |
---|
| 12 | * On-Line Applications Research Corporation (OAR). |
---|
| 13 | * All rights assigned to U.S. Government, 1994. |
---|
| 14 | * |
---|
| 15 | * This material may be reproduced by or for the U.S. Government pursuant |
---|
| 16 | * to the copyright license under the clause at DFARS 252.227-7013. This |
---|
| 17 | * notice must appear in all copies of this file and its derivatives. |
---|
| 18 | * |
---|
| 19 | * $Id$ |
---|
| 20 | */ |
---|
| 21 | |
---|
| 22 | #include <rtems.h> |
---|
| 23 | #include "shm.h" |
---|
| 24 | |
---|
| 25 | void Shm_Locked_queue_Add( |
---|
| 26 | Shm_Locked_queue_Control *lq_cb, |
---|
| 27 | Shm_Envelope_control *ecb |
---|
| 28 | ) |
---|
| 29 | { |
---|
| 30 | rtems_unsigned32 index; |
---|
| 31 | |
---|
| 32 | ecb->next = Shm_Locked_queue_End_of_list; |
---|
| 33 | ecb->queue = lq_cb->owner; |
---|
| 34 | index = ecb->index; |
---|
| 35 | |
---|
| 36 | Shm_Lock( lq_cb ); |
---|
| 37 | if ( Shm_Convert(lq_cb->front) != Shm_Locked_queue_End_of_list ) |
---|
| 38 | Shm_Envelopes[ Shm_Convert(lq_cb->rear) ].next = index; |
---|
| 39 | else |
---|
| 40 | lq_cb->front = index; |
---|
| 41 | lq_cb->rear = index; |
---|
| 42 | Shm_Unlock( lq_cb ); |
---|
| 43 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.