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Annotation of 43BSDTahoe/usr.lib/libcurses/tstp.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1981 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)tstp.c     5.3 (Berkeley) 6/30/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: # include      <signal.h>
        !            23: 
        !            24: # include      "curses.ext"
        !            25: 
        !            26: /*
        !            27:  * handle stop and start signals
        !            28:  *
        !            29:  * @(#)tstp.c  5.3 (Berkeley) 6/30/88
        !            30:  */
        !            31: tstp() {
        !            32: 
        !            33: # ifdef SIGTSTP
        !            34: 
        !            35:        SGTTY   tty;
        !            36:        int     omask;
        !            37: # ifdef DEBUG
        !            38:        if (outf)
        !            39:                fflush(outf);
        !            40: # endif
        !            41:        tty = _tty;
        !            42:        mvcur(0, COLS - 1, LINES - 1, 0);
        !            43:        endwin();
        !            44:        fflush(stdout);
        !            45:        /* reset signal handler so kill below stops us */
        !            46:        signal(SIGTSTP, SIG_DFL);
        !            47: #define        mask(s) (1 << ((s)-1))
        !            48:        omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP));
        !            49:        kill(0, SIGTSTP);
        !            50:        sigblock(mask(SIGTSTP));
        !            51:        signal(SIGTSTP, tstp);
        !            52:        _tty = tty;
        !            53:        stty(_tty_ch, &_tty);
        !            54:        wrefresh(curscr);
        !            55: # endif        SIGTSTP
        !            56: }

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