4.104.114.84.95
Last change
on this file since 3473f605 was
03f2154e,
checked in by Joel Sherrill <joel.sherrill@…>, on 04/22/97 at 17:20:27
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headers updated to reflect new style copyright notice as part
of switching to the modified GNU GPL.
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | /* void Shm_Locked_queue_Add( lq_cb, ecb ) |
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2 | * |
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3 | * This routine adds an envelope control block to a shared memory queue. |
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4 | * |
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5 | * Input parameters: |
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6 | * lq_cb - pointer to a locked queue control block |
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7 | * ecb - pointer to an envelope control block |
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8 | * |
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9 | * Output parameters: NONE |
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10 | * |
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11 | * COPYRIGHT (c) 1989-1997. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * Copyright assigned to U.S. Government, 1994. |
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14 | * |
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15 | * The license and distribution terms for this file may in |
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16 | * the file LICENSE in this distribution or at |
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17 | * http://www.OARcorp.com/rtems/license.html. |
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18 | * |
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19 | * $Id$ |
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20 | */ |
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21 | |
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22 | #include <rtems.h> |
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23 | #include "shm.h" |
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24 | |
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25 | void Shm_Locked_queue_Add( |
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26 | Shm_Locked_queue_Control *lq_cb, |
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27 | Shm_Envelope_control *ecb |
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28 | ) |
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29 | { |
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30 | rtems_unsigned32 index; |
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31 | |
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32 | ecb->next = Shm_Locked_queue_End_of_list; |
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33 | ecb->queue = lq_cb->owner; |
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34 | index = ecb->index; |
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35 | |
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36 | Shm_Lock( lq_cb ); |
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37 | if ( Shm_Convert(lq_cb->front) != Shm_Locked_queue_End_of_list ) |
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38 | Shm_Envelopes[ Shm_Convert(lq_cb->rear) ].next = index; |
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39 | else |
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40 | lq_cb->front = index; |
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41 | lq_cb->rear = index; |
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42 | Shm_Unlock( lq_cb ); |
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43 | } |
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