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- /*
- * Copyright (c) 1990 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
- * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
- * SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
- * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Users of this software agree to return to Carnegie Mellon any
- * improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- *
- * Export of this software is permitted only after complying with the
- * regulations of the U.S. Deptartment of Commerce relating to the
- * Export of Technical Data.
- */
- /* del -- interrupt handling macros
- *
- * HISTORY
- * $Log: del.h,v $
- * Revision 1.2 90/12/12 20:56:03 mja
- * Add copyright/disclaimer for distribution.
- *
- * 17-Apr-85 Steven Shafer (sas) at Carnegie-Mellon University
- * Modified for 4.2 BSD. Messages also moved to stderr instead of stdout.
- *
- */
-
- #include <signal.h>
-
- extern int del();
- extern int _del_;
- extern struct sigvec _del_vec;
-
- #define ENABLEDEL {_del_=0; _del_vec.sv_handler=del; sigvec(SIGINT,&_del_vec,0);}
- #define DISABLEDEL {_del_=0; _del_vec.sv_handler=SIG_DFL; sigvec(SIGINT,&_del_vec,0);}
- #define IGNOREDEL {_del_=0; _del_vec.sv_handler=SIG_IGN; sigvec(SIGINT,&_del_vec,0);}
-
- #define _DELNOTE_ _del_=0; fprintf (stderr," Break!\n"); fflush (stderr);
- #define DELBREAK if (_del_) {_DELNOTE_ break;}
- #define DELRETURN if (_del_) {_DELNOTE_ return;}
- #define DELRETN(x) if (_del_) {_DELNOTE_ return (x);}
- #define DELCLEAR if (_del_) {_del_=0; fprintf (stderr,"Break ignored.\n"); fflush (stderr);}
-