cpython.git - https://github.com/python/cpython.git

	Commit message (Expand)	Author	Age	Files	Lines
*	RtD docs previews: Cancel building PRs if no changes in Doc dir (#104100)	Hugo van Kemenade	2023-05-24	1	-0/+14

*	Replace Netlify with Read the Docs build previews (#103843)	Hugo van Kemenade	2023-04-30	1	-0/+18

/*********************************************************** 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 BSD_TIME #define HAVE_GETTIMEOFDAY #endif #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; { #ifdef HAVE_GETTIMEOFDAY struct timeval t; struct timezone tz; if (!getnoarg(args)) return NULL; if (gettimeofday(&t, &tz) != 0) { err_errno(IOError); return NULL; } return newfloatobject(t.tv_sec*1.0 + t.tv_usec*0.000001); #else /* !HAVE_GETTIMEOFDAY */ 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 newfloatobject((double)secs); #endif /* !HAVE_GETTIMEOFDAY */ } 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 */