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/**
* @file
*
* @brief RTEMS Catch Signal
* @ingroup ClassicSignal
*/
/*
* COPYRIGHT (c) 1989-1999.
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/sysinit.h>
#include <rtems/rtems/signalimpl.h>
#include <rtems/rtems/asrimpl.h>
#include <rtems/rtems/tasksdata.h>
#include <rtems/score/assert.h>
#include <rtems/score/threadimpl.h>
RTEMS_STATIC_ASSERT( RTEMS_DEFAULT_MODES == 0, _ASR_Create_mode_set );
void _Signal_Action_handler(
Thread_Control *executing,
Thread_Action *action,
ISR_lock_Context *lock_context
)
{
RTEMS_API_Control *api;
ASR_Information *asr;
rtems_signal_set signal_set;
rtems_mode prev_mode;
(void) action;
/*
* Signal Processing
*/
api = executing->API_Extensions[ THREAD_API_RTEMS ];
asr = &api->Signal;
signal_set = _ASR_Get_posted_signals( asr );
_Thread_State_release( executing, lock_context );
if ( signal_set == 0 ) {
return;
}
asr->nest_level += 1;
rtems_task_mode( asr->mode_set, RTEMS_ALL_MODE_MASKS, &prev_mode );
(*asr->handler)( signal_set );
asr->nest_level -= 1;
rtems_task_mode( prev_mode, RTEMS_ALL_MODE_MASKS, &prev_mode );
}
rtems_status_code rtems_signal_catch(
rtems_asr_entry asr_handler,
rtems_mode mode_set
)
{
Thread_Control *executing;
RTEMS_API_Control *api;
ASR_Information *asr;
ISR_lock_Context lock_context;
executing = _Thread_State_acquire_for_executing( &lock_context );
api = executing->API_Extensions[ THREAD_API_RTEMS ];
asr = &api->Signal;
if ( !_ASR_Is_null_handler( asr_handler ) ) {
asr->mode_set = mode_set;
asr->handler = asr_handler;
} else {
_ASR_Initialize( asr );
}
_Thread_State_release( executing, &lock_context );
return RTEMS_SUCCESSFUL;
}
#if defined(RTEMS_MULTIPROCESSING)
static void _Signal_Manager_initialization( void )
{
_MPCI_Register_packet_processor(
MP_PACKET_SIGNAL,
_Signal_MP_Process_packet
);
}
RTEMS_SYSINIT_ITEM(
_Signal_Manager_initialization,
RTEMS_SYSINIT_CLASSIC_SIGNAL,
RTEMS_SYSINIT_ORDER_MIDDLE
);
#endif
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