mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-12 09:58:36 +00:00
850b77e689
Add revoke before shell exit. Fix mail sending procedure. Convert to random() Implement nap.
121 lines
2.4 KiB
C
121 lines
2.4 KiB
C
/* nap.c Larn is copyrighted 1986 by Noah Morgan. */
|
|
#include <signal.h>
|
|
#include <sys/types.h>
|
|
#ifdef SYSV
|
|
#include <sys/times.h>
|
|
#else
|
|
#ifdef BSD
|
|
#include <sys/timeb.h>
|
|
#endif BSD
|
|
#endif SYSV
|
|
|
|
/*
|
|
* routine to take a nap for n milliseconds
|
|
*/
|
|
nap(x)
|
|
register int x;
|
|
{
|
|
if (x<=0) return; /* eliminate chance for infinite loop */
|
|
lflush();
|
|
#if 0
|
|
if (x > 999) sleep(x/1000); else napms(x);
|
|
#else
|
|
usleep(x*1000);
|
|
#endif
|
|
}
|
|
|
|
#ifdef NONAP
|
|
napms(x) /* do nothing */
|
|
int x;
|
|
{
|
|
}
|
|
#else NONAP
|
|
#ifdef SYSV
|
|
/* napms - sleep for time milliseconds - uses times() */
|
|
/* this assumes that times returns a relative time in 60ths of a second */
|
|
/* this will do horrible things if your times() returns seconds! */
|
|
napms(time)
|
|
int time;
|
|
{
|
|
long matchclock, times();
|
|
struct tms stats;
|
|
|
|
if (time<=0) time=1; /* eliminate chance for infinite loop */
|
|
if ((matchclock = times(&stats)) == -1 || matchclock == 0)
|
|
return; /* error, or BSD style times() */
|
|
matchclock += (time / 17); /*17 ms/tic is 1000 ms/sec / 60 tics/sec */
|
|
|
|
while(matchclock < times(&stats))
|
|
;
|
|
}
|
|
|
|
#else not SYSV
|
|
#ifdef BSD
|
|
#ifdef SIGVTALRM
|
|
/* This must be BSD 4.2! */
|
|
#include <sys/time.h>
|
|
#define bit(_a) (1<<((_a)-1))
|
|
|
|
static nullf()
|
|
{
|
|
}
|
|
|
|
/* napms - sleep for time milliseconds - uses setitimer() */
|
|
napms(time)
|
|
int time;
|
|
{
|
|
struct itimerval timeout;
|
|
int (*oldhandler) ();
|
|
int oldsig;
|
|
|
|
if (time <= 0) return;
|
|
|
|
timerclear(&timeout.it_interval);
|
|
timeout.it_value.tv_sec = time / 1000;
|
|
timeout.it_value.tv_usec = (time % 1000) * 1000;
|
|
|
|
oldsig = sigblock(bit(SIGALRM));
|
|
setitimer(ITIMER_REAL, &timeout, (struct itimerval *)0);
|
|
oldhandler = signal(SIGALRM, nullf);
|
|
sigpause(oldsig);
|
|
signal(SIGALRM, oldhandler);
|
|
sigsetmask(oldsig);
|
|
}
|
|
|
|
#else
|
|
/* napms - sleep for time milliseconds - uses ftime() */
|
|
|
|
static napms(time)
|
|
int time;
|
|
{
|
|
/* assumed to be BSD UNIX */
|
|
struct timeb _gtime;
|
|
time_t matchtime;
|
|
unsigned short matchmilli;
|
|
register struct timeb *tp = & _gtime;
|
|
|
|
if (time <= 0) return;
|
|
ftime(tp);
|
|
matchmilli = tp->millitm + time;
|
|
matchtime = tp->time;
|
|
while (matchmilli >= 1000)
|
|
{
|
|
++matchtime;
|
|
matchmilli -= 1000;
|
|
}
|
|
|
|
while(1)
|
|
{
|
|
ftime(tp);
|
|
if ((tp->time > matchtime) ||
|
|
((tp->time == matchtime) && (tp->millitm >= matchmilli)))
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
#else not BSD
|
|
static napms(time) int time; {} /* do nothing, forget it */
|
|
#endif BSD
|
|
#endif SYSV
|
|
#endif NONAP
|