forked from Imagelibrary/rtems
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/* void Shm_Locked_queue_Add( lq_cb, ecb )
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*
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* This routine adds an envelope control block to a shared memory queue.
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*
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* Input parameters:
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* lq_cb - pointer to a locked queue control block
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* ecb - pointer to an envelope control block
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*
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* Output parameters: NONE
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <rtems.h>
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#include "shm_driver.h"
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void Shm_Locked_queue_Add(
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Shm_Locked_queue_Control *lq_cb,
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Shm_Envelope_control *ecb
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)
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{
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uint32_t index;
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ecb->next = Shm_Locked_queue_End_of_list;
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ecb->queue = lq_cb->owner;
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index = ecb->index;
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Shm_Lock( lq_cb );
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if ( Shm_Convert(lq_cb->front) != Shm_Locked_queue_End_of_list )
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Shm_Envelopes[ Shm_Convert(lq_cb->rear) ].next = index;
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else
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lq_cb->front = index;
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lq_cb->rear = index;
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Shm_Unlock( lq_cb );
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}
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