sighandler.h

/***********************************************************************
 * Copyright (C) 2002,2003,2004,2005,2006,2007,2008 Carsten Urbach
 *
 * This file is part of tmLQCD.
 *
 * tmLQCD 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.
 * 
 * tmLQCD 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 tmLQCD.  If not, see <http://www.gnu.org/licenses/>.
 ***********************************************************************/

/************************************************************
 *
 * Routines to handle system signals
 *
 * void catch_ill_inst(int s)
 *
 * catches illegal instructions signal
 * and writes an error indication to
 * stdout.
 *
 * input:
 *  int s: signal number (not used)
 *
 *
 * void catch_del_sig(int s)
 *
 * catches some user defined signals
 * and saves configuration and 
 * random number status to disk
 *
 * input:
 *  int s: signal number (not used)
 ************************************************************/

#ifndef _SIGHANDLER_H
#define _SIGHANDLER_H
/* During critical regions one does not want */
/* the configuration to be dumped */
/* in this case set dontdump to 1 while */
/* the program is in the region */
/* don't forget to reset this value... */
extern int dontdump;

/* If a signal is catched while dontdump==1 */
/* forcedump is set to 1 */
/* This can be used to dump data to disk and */
/* exit savely after the critical region has finished */
extern int forcedump;

/* Catch an illegal instruction in order */
/* to give the user a hint what was wrong */
void catch_ill_inst(int);

/* catch some signals as SIGUSR1|2 and SIGTERM */
/* to save the current configuration and */
/* random number state */
/* This might help to save computing time */
void catch_del_sig(int);

#endif