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/* Shm_Get_packet
*
* This routine is the shared memory locked queue MPCI driver
* routine used to obtain an empty message packet.
*
* Input parameters:
* packet - address of pointer to packet
*
* Output parameters:
* *(cpb->get_packet) - address of allocated packet
*
* 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"
rtems_mpci_entry Shm_Get_packet(
rtems_packet_prefix **packet
)
{
Shm_Envelope_control *ecb;
ecb = Shm_Allocate_envelope();
if ( !ecb )
rtems_fatal_error_occurred ( SHM_NO_FREE_PKTS );
*packet = Shm_Envelope_control_to_packet_prefix_pointer( ecb );
}
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