/* systime.h - System-dependent definitions for time manipulations.
- Copyright (C) 1992 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
#endif
#endif
+#ifdef HAVE_TZNAME
+#ifndef tzname /* For SGI. */
+extern char *tzname[]; /* RS6000 and others want it this way. */
+#endif
+#endif
+
/* SVr4 doesn't actually declare this in its #include files. */
#ifdef USG5_4
extern long timezone;
#endif
#endif
+/* On some configurations (hpux8.0, X11R4), sys/time.h and X11/Xos.h
+ disagree about the name of the guard symbol. */
+#ifdef HPUX
+#ifdef _STRUCT_TIMEVAL
+#ifndef __TIMEVAL__
+#define __TIMEVAL__
+#endif
+#endif
+#endif
\f
/* EMACS_TIME is the type to use to represent temporal intervals -
struct timeval on some systems, int on others. It can be passed as
EMACS_GET_TIME (TIME) stores the current system time in TIME, which
should be an lvalue.
- EMACS_SET_UTIMES (PATH, ATIME, MTIME) changes the last-access and
- last-modification times of the file named PATH to ATIME and
- MTIME, which are EMACS_TIMEs.
EMACS_ADD_TIME (DEST, SRC1, SRC2) adds SRC1 to SRC2 and stores the
result in DEST. SRC should not be negative.
#define EMACS_SET_SECS(time, seconds) ((time).tv_sec = (seconds))
#define EMACS_SET_USECS(time, microseconds) ((time).tv_usec = (microseconds))
+/* On SVR4, the compiler may complain if given this extra BSD arg. */
+#ifdef GETTIMEOFDAY_ONE_ARGUMENT
+#define EMACS_GET_TIME(time) \
+{ \
+ gettimeofday (&(time)); \
+}
+#else /* not GETTIMEOFDAY_ONE_ARGUMENT */
#define EMACS_GET_TIME(time) \
{ \
struct timezone dummy; \
gettimeofday (&(time), &dummy); \
}
+#endif /* not GETTIMEOFDAY_ONE_ARGUMENT */
#define EMACS_ADD_TIME(dest, src1, src2) \
{ \
}
#define EMACS_TIME_NEG_P(time) \
- ((time).tv_sec < 0 \
+ ((long)(time).tv_sec < 0 \
|| ((time).tv_sec == 0 \
- && (time).tv_usec < 0))
+ && (long)(time).tv_usec < 0))
#else /* ! defined (HAVE_TIMEVAL) */
#define EMACS_SET_SECS_USECS(time, secs, usecs) \
(EMACS_SET_SECS (time, secs), EMACS_SET_USECS (time, usecs))
-#ifdef USE_UTIME
-
-#define EMACS_SET_UTIMES(path, atime, mtime) \
- { \
- time_t tv[2]; \
- tv[0] = EMACS_SECS (atime); \
- tv[1] = EMACS_SECS (mtime); \
- utime ((path), tv); \
- }
-
-#else /* ! defined (USE_UTIME) */
-
-#define EMACS_SET_UTIMES(path, atime, mtime) \
- { \
- EMACS_TIME tv[2]; \
- tv[0] = atime; \
- tv[1] = mtime; \
- utimes ((path), tv); \
- }
-
-#endif /* ! defined (USE_UTIME) */
-
-\f
-
-/* EMACS_CURRENT_TIME_ZONE (int *OFFSET, int *SAVINGS_FLAG,
- char *STANDARD_ABBR, char *SAVINGS_ABBR);
- expands to a statement which stores information about the current
- time zone in its arguments.
-
- *OFFSET is set to the number of minutes EAST of Greenwich at which
- the site's time zone is located. This should describe the offset
- to standard time only; if some sort of daylight savings time is in
- effect, that should not affect this value. Note that the tm_gmtoff
- member of the struct tm returned by localtime is adjusted for
- daylight savings, so you don't want to use localtime to set
- *OFFSET; gettimeofday does the right thing.
-
- *SAVINGS_FLAG is set to 1 if some sort of daylight savings time is
- currently in effect, or 0 if no seasonal adjustment is currently
- active.
-
- *STANDARD_ABBR points to an array of at least 10 characters, which
- should be set to the standard abbreviation for the time zone name
- when daylight savings time is not active. For example, EDT would
- be appropriate for the Eastern time zone of the USA.
-
- *SAVINGS_ABBR points to an array of at least 10 characters, which
- should be set to the standard abbreviation for the time zone name
- when daylight savings time is active. For example, EST would be
- appropriate for the Eastern time zone of the USA.
-
- If the operating system cannot provide all this information, then
- this macro will not be defined. */
-
-
-/* The operating system configuration file can define
- EMACS_CURRENT_TIME_ZONE. If not, we'll take a shot at it here. */
-
-#ifndef EMACS_CURRENT_TIME_ZONE
-
-/* System V derivatives have a timezone global variable. */
-#if defined(USG) || defined(VMS)
-#define EMACS_GET_TZ_OFFSET(offset) \
- do { \
- tzset (); \
- *(offset) = timezone; \
- } while (0)
-#endif
-
-/* If we have timeval, then we have gettimeofday; that's half the battle. */
-#if defined (HAVE_TIMEVAL) && !defined (EMACS_GET_TZ_OFFSET)
-#define EMACS_GET_TZ_OFFSET(offset) \
- do { \
- struct timeval dummy; \
- struct timezone zoneinfo; \
- \
- gettimeofday (&dummy, &zoneinfo); \
- *(offset) = -zoneinfo.tz_minuteswest; \
- } while (0)
-#endif /* ! defined (HAVE_TIMEVAL) */
-
-/* The following sane systems have a tzname array. The timezone function
- is a stupid idea; timezone names can only be determined geographically,
- not by Greenwich offset. */
-#if defined (ultrix) || defined (hpux) || defined (_AIX) || defined (USG) || defined(VMS)
-
-#define EMACS_GET_TZ_NAMES(standard, savings) \
- do { \
- extern char *tzname[2]; \
- strcpy ((standard), tzname[0]); \
- strcpy ((savings), tzname[1]); \
- } while (0)
-
-#else /* ! defined (ultrix) || defined (hpux) || defined (_AIX) */
-/* If we are running SunOS, Mt. Xinu BSD, or MACH 2.5, these systems have a
- timezone function. */
-#if (defined (hp9000) && ! defined (hpux) && defined (unix)) || defined (MACH) || defined (sun) || defined (NeXT)
-
-#define EMACS_GET_TZ_NAMES(standard, savings) \
- do { \
- struct timeval dummy; \
- struct timezone zoneinfo; \
- extern char *timezone (); \
- \
- gettimeofday (&dummy, &zoneinfo); \
- strcpy ((standard), timezone (zoneinfo.tz_minuteswest, 0)); \
- strcpy ((savings), timezone (zoneinfo.tz_minuteswest, 1)); \
- } while (0)
-
-#endif /* ! (defined (hp9000) && ! defined (hpux) && defined (unix)) || defined (MACH) || defined (sun) */
-#endif /* ! defined (ultrix) || defined (hpux) || defined (_AIX) */
-
-/* If we can get all the information we need, let's define the macro! */
-#if defined (EMACS_GET_TZ_OFFSET) && defined (EMACS_GET_TZ_NAMES)
-
-#define EMACS_CURRENT_TIME_ZONE(offset, savings_flag, standard, savings)\
- do { \
- EMACS_TIME t; \
- long secs; \
- struct tm *tmp; \
- \
- EMACS_GET_TIME (t); \
- secs = EMACS_SECS (t); \
- tmp = localtime (&secs); \
- *(savings_flag) = tmp->tm_isdst; \
- \
- EMACS_GET_TZ_OFFSET (offset); \
- EMACS_GET_TZ_NAMES (standard, savings); \
- } while (0)
-#endif /* ! defined (EMACS_GET_TZ_OFFSET) && defined (EMACS_GET_TZ_NAMES) */
-
-#endif /* EMACS_CURRENT_TIME_ZONE */
+extern int set_file_times ();
HCoop / bpt / emacs.git / blobdiff