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/* This testcase is part of GDB, the GNU debugger.

   Copyright 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <stdio.h>

#include <string.h>

#include <signal.h>

#include <sys/time.h>

static volatile int done;

#ifdef SA_SIGINFO

static void /* HANDLER */

handler (int sig, siginfo_t *info, void *context)

{

  done = 1;

} /* handler */

#else

static void

handler (int sig)

{

  done = 1;

} /* handler */

#endif

main ()

{

  /* Set up the signal handler.  */

  {

    struct sigaction action;

    memset (&action, 0, sizeof (action));

#ifdef SA_SIGINFO

    action.sa_sigaction = handler;

    action.sa_flags |= SA_SIGINFO;

#else

    action.sa_handler = handler;

#endif

    sigaction (SIGVTALRM, &action, NULL);

  }

  /* Set up a one-off timer.  A timer, rather than SIGSEGV, is used as

     after a timer handler finishes the interrupted code can safely

     resume.  */

  {

    struct itimerval itime;

    memset (&itime, 0, sizeof (itime));

    itime.it_value.tv_usec = 250 * 1000;

    setitimer (ITIMER_VIRTUAL, &itime, NULL);

  }

  /* Wait.  */

  while (!done);

  return 0;

} /* main */