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/*
* Signal Manager
*
*
* 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.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/asr.h>
#include <rtems/score/isr.h>
#include <rtems/rtems/modes.h>
#include <rtems/rtems/signal.h>
#include <rtems/score/thread.h>
#include <rtems/rtems/tasks.h>
/*PAGE
*
* rtems_signal_catch
*
* This directive allows a thread to specify what action to take when
* catching signals.
*
* Input parameters:
* handler - address of asynchronous signal routine (asr)
* ( NULL indicates asr is invalid )
* mode_set - mode value for asr
*
* Output parameters:
* RTEMS_SUCCESSFUL - always succeeds
*/
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;
/* XXX normalize mode */
executing = _Thread_Executing;
api = executing->API_Extensions[ THREAD_API_RTEMS ];
asr = &api->Signal;
_Thread_Disable_dispatch(); /* cannot reschedule while */
/* the thread is inconsistent */
if ( !_ASR_Is_null_handler( asr_handler ) ) {
asr->mode_set = mode_set;
asr->handler = asr_handler;
}
else
_ASR_Initialize( asr );
_Thread_Enable_dispatch();
return RTEMS_SUCCESSFUL;
}
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