350 lines
7.1 KiB
C
350 lines
7.1 KiB
C
/***********************************************************
|
|
Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
|
|
Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* Time module */
|
|
|
|
#include "allobjects.h"
|
|
#include "modsupport.h"
|
|
#include "ceval.h"
|
|
|
|
#include "sigtype.h"
|
|
|
|
#include <signal.h>
|
|
#include <setjmp.h>
|
|
|
|
#ifdef macintosh
|
|
#define NO_UNISTD
|
|
#endif
|
|
|
|
#ifndef NO_UNISTD
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
/* What happens here is not trivial.
|
|
The BSD_TIME code needs <sys/time.h> (for struct timeval).
|
|
The rest of the code needs only time_t, except some MS-DOS
|
|
code which needs clock_t as well.
|
|
Standard C says that time_t is defined in <time.h>, and
|
|
does not have <sys/types.h>; THINK C agrees (MS-DOS too?).
|
|
What's worse, in pure 4.3 BSD, older SunOS versions, and
|
|
probably everything derived from BSD, you can't #include
|
|
both <time.h> and <sys/time.h> in the same file, since
|
|
<sys/time.h> includes <time.h> without any protection,
|
|
and <time.h> contains a typedef, which can't be parsed twice!
|
|
So on traditional UNIX systems we include <sys/types.h>
|
|
and <sys/time.h> and hope this implies <time.h> and time_t,
|
|
while on other systems, including conforming Standard C
|
|
systems (where 'unix' can't be defined), we rely on <time.h>.
|
|
Still one problem: BSD_TIME won't work with strict Standard C...
|
|
*/
|
|
|
|
#ifdef unix
|
|
#include <sys/types.h>
|
|
#include <sys/time.h> /* Implies <time.h> everywhere, as far as I know */
|
|
#else /* !unix */
|
|
#include <time.h>
|
|
#endif /* !unix */
|
|
|
|
#ifdef DO_TIMES
|
|
#include <sys/times.h>
|
|
#include <sys/param.h>
|
|
#include <errno.h>
|
|
#endif
|
|
|
|
/* Time methods */
|
|
|
|
static object *
|
|
time_time(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
time_t secs;
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
time(&secs);
|
|
#ifdef macintosh
|
|
/* The Mac epoch is 1904, while UNIX uses 1970; Python prefers 1970 */
|
|
/* Moreover, the Mac returns local time. This we cannot fix... */
|
|
#define TIMEDIFF ((time_t) \
|
|
(((1970-1904)*365L + (1970-1904)/4) * 24 * 3600))
|
|
secs -= TIMEDIFF;
|
|
#endif
|
|
return newintobject((long)secs);
|
|
}
|
|
|
|
static jmp_buf sleep_intr;
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
sleep_catcher(sig)
|
|
int sig; /* Not used but required by interface */
|
|
{
|
|
longjmp(sleep_intr, 1);
|
|
}
|
|
|
|
static object *
|
|
time_sleep(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
long secs;
|
|
SIGTYPE (*sigsave)() = 0; /* Initialized to shut lint up */
|
|
if (!getargs(args, "l", &secs))
|
|
return NULL;
|
|
BGN_SAVE
|
|
if (setjmp(sleep_intr)) {
|
|
RET_SAVE
|
|
signal(SIGINT, sigsave);
|
|
err_set(KeyboardInterrupt);
|
|
return NULL;
|
|
}
|
|
sigsave = signal(SIGINT, SIG_IGN);
|
|
if (sigsave != (SIGTYPE (*)()) SIG_IGN)
|
|
signal(SIGINT, sleep_catcher);
|
|
#ifdef BSD_TIME
|
|
longsleep(secs);
|
|
#else
|
|
sleep((int)secs);
|
|
#endif
|
|
END_SAVE
|
|
signal(SIGINT, sigsave);
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
#ifdef macintosh
|
|
#define DO_MILLI
|
|
#endif
|
|
|
|
#ifdef AMOEBA
|
|
#define DO_MILLI
|
|
extern long sys_milli();
|
|
#define millitimer sys_milli
|
|
#endif /* AMOEBA */
|
|
|
|
#ifdef BSD_TIME
|
|
#define DO_MILLI
|
|
#endif /* BSD_TIME */
|
|
|
|
#ifdef TURBO_C
|
|
#define DO_MILLI
|
|
#endif
|
|
|
|
#ifdef DO_MILLI
|
|
|
|
static object *
|
|
time_millisleep(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
long msecs;
|
|
SIGTYPE (*sigsave)();
|
|
if (!getlongarg(args, &msecs))
|
|
return NULL;
|
|
BGN_SAVE
|
|
if (setjmp(sleep_intr)) {
|
|
RET_SAVE
|
|
signal(SIGINT, sigsave);
|
|
err_set(KeyboardInterrupt);
|
|
return NULL;
|
|
}
|
|
sigsave = signal(SIGINT, SIG_IGN);
|
|
if (sigsave != (SIGTYPE (*)()) SIG_IGN)
|
|
signal(SIGINT, sleep_catcher);
|
|
millisleep(msecs);
|
|
END_SAVE
|
|
signal(SIGINT, sigsave);
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
time_millitimer(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
long msecs;
|
|
extern long millitimer();
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
msecs = millitimer();
|
|
return newintobject(msecs);
|
|
}
|
|
|
|
#endif /* DO_MILLI */
|
|
|
|
#ifdef DO_TIMES
|
|
|
|
static object *
|
|
time_times(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
struct tms t;
|
|
clock_t c;
|
|
object *tuple;
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
errno = 0;
|
|
c = times(&t);
|
|
if (c == (clock_t) -1) {
|
|
err_errno(IOError);
|
|
return NULL;
|
|
}
|
|
tuple = newtupleobject(4);
|
|
if (tuple == NULL)
|
|
return NULL;
|
|
settupleitem(tuple, 0, newfloatobject((double)t.tms_utime / HZ));
|
|
settupleitem(tuple, 1, newfloatobject((double)t.tms_stime / HZ));
|
|
settupleitem(tuple, 2, newfloatobject((double)t.tms_cutime / HZ));
|
|
settupleitem(tuple, 3, newfloatobject((double)t.tms_cstime / HZ));
|
|
if (err_occurred()) {
|
|
DECREF(tuple);
|
|
return NULL;
|
|
}
|
|
return tuple;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static struct methodlist time_methods[] = {
|
|
#ifdef DO_MILLI
|
|
{"millisleep", time_millisleep},
|
|
{"millitimer", time_millitimer},
|
|
#endif /* DO_MILLI */
|
|
#ifdef DO_TIMES
|
|
{"times", time_times},
|
|
#endif
|
|
{"sleep", time_sleep},
|
|
{"time", time_time},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
|
|
void
|
|
inittime()
|
|
{
|
|
initmodule("time", time_methods);
|
|
}
|
|
|
|
|
|
#ifdef macintosh
|
|
|
|
#define MacTicks (* (long *)0x16A)
|
|
|
|
#ifdef THINK_C_3_0
|
|
sleep(secs)
|
|
int secs;
|
|
{
|
|
register long deadline;
|
|
|
|
deadline = MacTicks + mecs * 60;
|
|
while (MacTicks < deadline) {
|
|
if (intrcheck())
|
|
sleep_catcher(SIGINT);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
millisleep(msecs)
|
|
long msecs;
|
|
{
|
|
register long deadline;
|
|
|
|
deadline = MacTicks + msecs * 3 / 50; /* msecs * 60 / 1000 */
|
|
while (MacTicks < deadline) {
|
|
if (intrcheck())
|
|
sleep_catcher(SIGINT);
|
|
}
|
|
}
|
|
|
|
long
|
|
millitimer()
|
|
{
|
|
return MacTicks * 50 / 3; /* MacTicks * 1000 / 60 */
|
|
}
|
|
|
|
#endif /* macintosh */
|
|
|
|
|
|
#ifdef BSD_TIME
|
|
|
|
#include "myselect.h" /* Implies <sys/types.h>, <sys/time.h>, <sys/param.h> */
|
|
|
|
long
|
|
millitimer()
|
|
{
|
|
struct timeval t;
|
|
struct timezone tz;
|
|
if (gettimeofday(&t, &tz) != 0)
|
|
return -1;
|
|
return t.tv_sec*1000 + t.tv_usec/1000;
|
|
}
|
|
|
|
millisleep(msecs)
|
|
long msecs;
|
|
{
|
|
struct timeval t;
|
|
t.tv_sec = msecs/1000;
|
|
t.tv_usec = (msecs%1000)*1000;
|
|
(void) select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t);
|
|
}
|
|
|
|
longsleep(secs)
|
|
long secs;
|
|
{
|
|
struct timeval t;
|
|
t.tv_sec = secs;
|
|
t.tv_usec = 0;
|
|
(void) select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t);
|
|
}
|
|
|
|
#endif /* BSD_TIME */
|
|
|
|
|
|
#ifdef TURBO_C /* Maybe also for MS-DOS? */
|
|
|
|
#ifndef CLOCKS_PER_SEC
|
|
#define CLOCKS_PER_SEC 55 /* 54.945 msec per tick (18.2 HZ clock) */
|
|
#endif
|
|
|
|
static
|
|
millisleep(msecs)
|
|
long msecs;
|
|
{
|
|
delay(msecs);
|
|
}
|
|
|
|
static long
|
|
millitimer()
|
|
{
|
|
clock_t ticks;
|
|
|
|
ticks = clock(); /* ticks since program start */
|
|
return ticks * CLOCKS_PER_SEC;
|
|
}
|
|
|
|
#endif /* TURBO_C */
|