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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [psignalchecksignal.c] - Blame information for rev 593

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Line No. Rev Author Line
1 30 unneback
/*
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 *  $Id: psignalchecksignal.c,v 1.2 2001-09-27 11:59:17 chris Exp $
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 */
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <signal.h>
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#include <rtems/system.h>
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#include <rtems/score/isr.h>
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#include <rtems/score/thread.h>
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#include <rtems/score/tqdata.h>
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#include <rtems/score/wkspace.h>
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#include <rtems/posix/seterr.h>
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#include <rtems/posix/threadsup.h>
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#include <rtems/posix/psignal.h>
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#include <rtems/posix/pthread.h>
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#include <rtems/posix/time.h>
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#include <stdio.h>
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/*PAGE
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 *
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 *  _POSIX_signals_Check_signal
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 */
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boolean _POSIX_signals_Check_signal(
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  POSIX_API_Control  *api,
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  int                 signo,
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  boolean             is_global
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)
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{
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  siginfo_t                   siginfo_struct;
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  sigset_t                    saved_signals_blocked;
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  if ( ! _POSIX_signals_Clear_signals( api, signo, &siginfo_struct,
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                                       is_global, TRUE ) )
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    return FALSE;
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  /*
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   *  Since we made a union of these, only one test is necessary but this is
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   *  safer.
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   */
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  assert( _POSIX_signals_Vectors[ signo ].sa_handler ||
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          _POSIX_signals_Vectors[ signo ].sa_sigaction );
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  /*
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   *  Just to prevent sending a signal which is currently being ignored.
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   */
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  if ( _POSIX_signals_Vectors[ signo ].sa_handler == SIG_IGN )
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    return FALSE;
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  /*
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   *  Block the signals requested in sa_mask
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   */
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  saved_signals_blocked = api->signals_blocked;
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  api->signals_blocked |= _POSIX_signals_Vectors[ signo ].sa_mask;
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  /* Here, the signal handler function executes */
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  switch ( _POSIX_signals_Vectors[ signo ].sa_flags ) {
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    case SA_SIGINFO:
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/*
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 *
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 *     assert( is_global );
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 */
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      (*_POSIX_signals_Vectors[ signo ].sa_sigaction)(
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        signo,
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        &siginfo_struct,
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        NULL        /* context is undefined per 1003.1b-1993, p. 66 */
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      );
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      break;
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    default:
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      (*_POSIX_signals_Vectors[ signo ].sa_handler)( signo );
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      break;
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  }
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  /*
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   *  Restore the previous set of blocked signals
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   */
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  api->signals_blocked = saved_signals_blocked;
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  return TRUE;
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}
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