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tstp.c
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1993-07-29
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/*
* Copyright (c) 1981 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)tstp.c 5.3 (Berkeley) 6/30/88";
#endif /* not lint */
# include <signal.h>
# include "curses.ext"
/*
* handle stop and start signals
*
* @(#)tstp.c 5.3 (Berkeley) 6/30/88
*/
void tstp() {
#ifdef __MINT__
# ifdef SIGTSTP
SGTTY tty;
int omask;
# ifdef DEBUG
if (outf)
fflush(outf);
# endif
tty = _tty;
mvcur(0, COLS - 1, LINES - 1, 0);
endwin();
fflush(stdout);
/* reset signal handler so kill below stops us */
signal(SIGTSTP, SIG_DFL);
#ifndef __MINT__
#define mask(s) (1 << ((s)-1))
#else
#define mask(s) sigmask(s)
#endif
omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP));
kill(0, SIGTSTP);
sigblock(mask(SIGTSTP));
signal(SIGTSTP, (__Sigfunc)tstp);
_tty = tty;
stty(_tty_ch, &_tty);
wrefresh(curscr);
# endif /* SIGTSTP */
#endif /* __MINT__ */
}