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/*
* This routine polls to see if a packet has arrived. If one
* has it informs the executive. It uses a Classic API Timer
*
* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems.h>
#include <rtems/score/sysstate.h>
#include <rtems/libio.h>
#include <assert.h>
#include "shm_driver.h"
rtems_timer_service_routine Shm_Poll_TSR(
rtems_id id,
void *ignored_address
)
{
uint32_t tmpfront;
/*
* This should NEVER happen but just in case.
*/
if (!_System_state_Is_up(_System_state_Get()))
return;
tmpfront = Shm_Local_receive_queue->front;
if ( Shm_Convert(tmpfront) != Shm_Locked_queue_End_of_list ) {
rtems_multiprocessing_announce();
Shm_Interrupt_count++;
}
(void) rtems_timer_reset( id );
}
void Shm_install_timer(void)
{
rtems_id id;
rtems_status_code status;
status = rtems_timer_create( rtems_build_name( 'S', 'H', 'P', 'L' ), &id );
assert( !status );
status = rtems_timer_fire_after( id, 1, Shm_Poll_TSR, NULL );
assert( !status );
}
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