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/*

 *  3.3.10 Send a Signal to a Thread, P1003.1c/D10, p. 43

 *

 *  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.

 *

 *  pthreadkill.c,v 1.7 2002/01/04 18:28:24 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <pthread.h>

#include <signal.h>

#include <errno.h>

#include <rtems/system.h>

#include <rtems/posix/pthread.h>

#include <rtems/posix/psignal.h>

#include <rtems/score/isr.h>

#include <rtems/seterr.h>

int pthread_kill(

  pthread_t   thread,

  int         sig

)

{

  POSIX_API_Control  *api;

  Thread_Control     *the_thread;

  Objects_Locations  location;

  if ( sig && !is_valid_signo(sig) )

    rtems_set_errno_and_return_minus_one( EINVAL );

/* commented out when posix timers added

  if ( _POSIX_signals_Vectors[ sig ].sa_flags == SA_SIGINFO )

    rtems_set_errno_and_return_minus_one( ENOSYS );

*/

  the_thread = _POSIX_Threads_Get( thread, &location );

  switch ( location ) {

    case OBJECTS_ERROR:

    case OBJECTS_REMOTE:

      rtems_set_errno_and_return_minus_one( ESRCH );

    case OBJECTS_LOCAL:

      /*

       *  If sig == 0 then just validate arguments

       */

      api = the_thread->API_Extensions[ THREAD_API_POSIX ];

      if ( sig ) {

        if ( _POSIX_signals_Vectors[ sig ].sa_handler == SIG_IGN ) {

          _Thread_Enable_dispatch();

          return 0;

        }

        /* XXX critical section */

        api->signals_pending |= signo_to_mask( sig );

        (void) _POSIX_signals_Unblock_thread( the_thread, sig, NULL );

        the_thread->do_post_task_switch_extension = TRUE;

        if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) )

          _ISR_Signals_to_thread_executing = TRUE;

      }

      _Thread_Enable_dispatch();

      return 0;

  }

  return POSIX_BOTTOM_REACHED();

}