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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)tstp.c     5.1 (Berkeley) 6/7/85";
        !             9: #endif not lint
        !            10: 
        !            11: # include      <signal.h>
        !            12: 
        !            13: # include      "curses.ext"
        !            14: 
        !            15: /*
        !            16:  * handle stop and start signals
        !            17:  *
        !            18:  * @(#)tstp.c  5.1 (Berkeley) 6/7/85
        !            19:  */
        !            20: tstp() {
        !            21: 
        !            22: # ifdef SIGTSTP
        !            23: 
        !            24:        SGTTY   tty;
        !            25:        int     omask;
        !            26: # ifdef DEBUG
        !            27:        if (outf)
        !            28:                fflush(outf);
        !            29: # endif
        !            30:        tty = _tty;
        !            31:        mvcur(0, COLS - 1, LINES - 1, 0);
        !            32:        endwin();
        !            33:        fflush(stdout);
        !            34:        /* reset signal handler so kill below stops us */
        !            35:        signal(SIGTSTP, SIG_DFL);
        !            36: #define        mask(s) (1 << ((s)-1))
        !            37:        omask = sigsetmask(sigblock(0) &~ mask(SIGTSTP));
        !            38:        kill(0, SIGTSTP);
        !            39:        sigblock(mask(SIGTSTP));
        !            40:        signal(SIGTSTP, tstp);
        !            41:        _tty = tty;
        !            42:        stty(_tty_ch, &_tty);
        !            43:        wrefresh(curscr);
        !            44: # endif        SIGTSTP
        !            45: }

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