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/**
* @file
*
* @ingroup RTEMSImplClassicEvent
*
* @brief This source file contains the implementation of
* rtems_event_system_receive().
*/
/*
* Copyright (c) 2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/eventimpl.h>
#include <rtems/rtems/tasksdata.h>
#include <rtems/score/statesimpl.h>
#include <rtems/score/threadimpl.h>
rtems_status_code rtems_event_system_receive(
rtems_event_set event_in,
rtems_option option_set,
rtems_interval ticks,
rtems_event_set *event_out
)
{
rtems_status_code sc;
if ( event_out != NULL ) {
ISR_lock_Context lock_context;
Thread_Control *executing;
RTEMS_API_Control *api;
Event_Control *event;
executing = _Thread_Wait_acquire_default_for_executing( &lock_context );
api = executing->API_Extensions[ THREAD_API_RTEMS ];
event = &api->System_event;
if ( !_Event_sets_Is_empty( event_in ) ) {
sc = _Event_Seize(
event_in,
option_set,
ticks,
event_out,
executing,
event,
THREAD_WAIT_CLASS_SYSTEM_EVENT,
STATES_WAITING_FOR_SYSTEM_EVENT,
&lock_context
);
} else {
*event_out = event->pending_events;
_Thread_Wait_release_default( executing, &lock_context );
sc = RTEMS_SUCCESSFUL;
}
} else {
sc = RTEMS_INVALID_ADDRESS;
}
return sc;
}
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