tt cleanup

[unix-history] / usr / src / usr.bin / window / wwsuspend.c

#ifndef lint
static  char *sccsid = "@(#)wwsuspend.c 3.2 83/08/15";
#endif

#include "ww.h"
#include "tt.h"
#include <signal.h>

#define mask(s) (1 << (s) - 1)

wwsuspend()
{
       int oldmask;

       oldmask = sigblock(mask(SIGTSTP));
       wwend();
       (void) sigsetmask(sigblock(0) & ~mask(SIGTSTP));
       (void) kill(0, SIGTSTP);
       (void) sigblock(mask(SIGTSTP));
       (void) wwsettty(0, &wwnewtty);
       (*tt.tt_init)();
       wwredraw();
       (void) sigsetmask(oldmask);
}