io statistics

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

#ifndef lint
static  char *sccsid = "@(#)wwsuspend.c 1.4 83/07/22";
#endif

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

#define mask(s) (1<<(SIG/**/s-1))

wwsuspend()
{
       int oldmask;

       oldmask = sigblock(mask(TSTP));
       wwend();
       sigsetmask(sigblock(0) & ~mask(TSTP));
       kill(0, SIGTSTP);
       sigblock(mask(TSTP));
       wwsettty(0, &wwnewtty);
       Winit(2, 1);
       sigsetmask(oldmask);
}