sig_xsb.h

/* File:      sig_xsb.h
** Author(s): Jiyang Xu
** Contact:   xsb-contact@cs.sunysb.edu
** 
** Copyright (C) The Research Foundation of SUNY, 1986, 1993-1998
** 
** XSB is free software; you can redistribute it and/or modify it under the
** terms of the GNU Library General Public License as published by the Free
** Software Foundation; either version 2 of the License, or (at your option)
** any later version.
** 
** XSB 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 Library General Public License for
** more details.
** 
** You should have received a copy of the GNU Library General Public License
** along with XSB; if not, write to the Free Software Foundation,
** Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** $Id: sig_xsb.h,v 1.5 2006/02/06 20:20:04 tswift Exp $
** 
*/


/* signals 1 and 8-15 are asynchronous. They are flaged by the variable  */
/* asynint_val, which can be 8-15 and maybe OR'ed with KEYINT_MARK.      */
/* At some interval (currently at the entry of "call", etc), a check is  */
/* made to see if there is an asynchronous interrupt occurred. If yes,   */
/* the procedure "interrupt_proc" is invoked. The rest of signals (0 and */
/* 2-4) are synchronous. The procedure "interrupt_proc" is invoked       */
/* directly.                                                             */

#define MYSIG_UNDEF    0                /* undefined predicate */
#define MYSIG_KEYB     1                /* keyboard interrupt (^C) */
#define MYSIG_SPY      3                /* spy point */
#define MYSIG_TRACE    4                /* trace point */
#define MYSIG_ATTV     8                /* attributed var interrupt */
#define MYSIG_PSC     14                /* new PSC creation interrupt */
#define THREADSIG_CANCEL   0xf
#define MYSIG_CLAUSE  16                /* clause interrupt */

#define KEYINT_MARK 0x80                /* keyboard interrupt ^C */
#define ATTVINT_MARK 0x40               /* attributed var interrupt */

#define MSGINT_MARK 0x20                /* software message interrupt */
#define PROFINT_MARK 0x10               /* XSB Profiling interrupt */

#define THREADINT_MARK 0x1000

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