--- /dev/null
+/* systime.h - System-dependent definitions for time manipulations.
+ Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs 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 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: FSF 19.30. */
+
+#ifndef INCLUDED_systime_h_
+#define INCLUDED_systime_h_
+
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
+/* select() is supposed to be (Unix98) defined in sys/time.h,
+ but FreeBSD and Irix 5 put it in unistd.h instead.
+ If we have it, including it can't hurt. */
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef WIN32_NATIVE
+
+/* This defines struct timeval */
+#include <winsock.h>
+
+struct timezone
+ {
+ int tz_minuteswest; /* minutes west of Greenwich */
+ int tz_dsttime; /* type of dst correction */
+ };
+
+#ifdef HAVE_X_WINDOWS
+/* Provides gettimeofday etc */
+#include <X11/Xw32defs.h>
+#include <X11/Xos.h>
+#else
+/* X11R6 on NT provides the single parameter version of this command */
+void gettimeofday (struct timeval *, struct timezone *);
+#endif /* HAVE_X_WINDOWS */
+
+#endif /* WIN32_NATIVE */
+
+/* struct utimbuf */
+
+#ifdef HAVE_UTIME
+# include <utime.h>
+#endif
+
+#ifdef WIN32_NATIVE
+# include <sys/utime.h>
+#endif
+
+#if defined(HAVE_TZNAME) && !defined(WIN32_NATIVE) && !defined(CYGWIN)
+#ifndef tzname /* For SGI. */
+extern char *tzname[]; /* RS6000 and others want it this way. */
+#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.
+ At one point this was 'struct timeval' on some systems, int on others.
+ But this is stupid. Other things than select() code like to
+ manipulate time values, and so microsecond precision should be
+ maintained. Separate typedefs and conversion functions are provided
+ for select().
+
+ EMACS_SECS (TIME) is an rvalue for the seconds component of TIME.
+ EMACS_SET_SECS (TIME, SECONDS) sets that to SECONDS.
+
+ EMACS_USECS (TIME) is an rvalue for the microseconds component of TIME.
+ EMACS_SET_USECS (TIME, MICROSECONDS) sets that to MICROSECONDS.
+
+ Note that all times are returned in "normalized" format (i.e. the
+ usecs value is in the range 0 <= value < 1000000) and are assumed
+ to be passed in in this format.
+
+ EMACS_SET_SECS_USECS (TIME, SECS, USECS) sets both components of TIME.
+
+ EMACS_GET_TIME (TIME) stores the current system time in TIME, which
+ should be an lvalue.
+
+ set_file_times (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_NORMALIZE_TIME (TIME) coerces TIME into normalized format.
+
+ EMACS_ADD_TIME (DEST, SRC1, SRC2) adds SRC1 to SRC2 and stores the
+ result in DEST. Either or both may be negative.
+
+ EMACS_SUB_TIME (DEST, SRC1, SRC2) subtracts SRC2 from SRC1 and
+ stores the result in DEST. Either or both may be negative.
+
+ EMACS_TIME_NEG_P (TIME) is true iff TIME is negative.
+
+ EMACS_TIME_EQUAL (TIME1, TIME2) is true iff TIME1 is the same as TIME2.
+ EMACS_TIME_GREATER (TIME1, TIME2) is true iff TIME1 is greater than
+ TIME2.
+ EMACS_TIME_EQUAL_OR_GREATER (TIME1, TIME2) is true iff TIME1 is
+ greater than or equal to TIME2.
+
+*/
+
+#ifdef HAVE_TIMEVAL
+
+#define EMACS_SELECT_TIME struct timeval
+#define EMACS_TIME_TO_SELECT_TIME(time, select_time) ((select_time) = (time))
+
+#else /* not HAVE_TIMEVAL */
+
+struct timeval
+{
+ long tv_sec; /* seconds */
+ long tv_usec; /* microseconds */
+};
+
+#define EMACS_SELECT_TIME int
+#define EMACS_TIME_TO_SELECT_TIME(time, select_time) \
+ EMACS_TIME_TO_INT (time, select_time)
+
+#endif /* not HAVE_TIMEVAL */
+
+#define EMACS_TIME_TO_INT(time, intvar) \
+do { \
+ EMACS_TIME tmptime = time; \
+ \
+ if (tmptime.tv_usec > 0) \
+ (intvar) = tmptime.tv_sec + 1; \
+ else \
+ (intvar) = tmptime.tv_sec; \
+} while (0)
+
+#define EMACS_TIME struct timeval
+#define EMACS_SECS(time) ((time).tv_sec + 0)
+#define EMACS_USECS(time) ((time).tv_usec + 0)
+#define EMACS_SET_SECS(time, seconds) ((time).tv_sec = (seconds))
+#define EMACS_SET_USECS(time, microseconds) ((time).tv_usec = (microseconds))
+
+#if !defined (HAVE_GETTIMEOFDAY)
+int gettimeofday (struct timeval *, void *);
+#endif
+
+/* On SVR4, the compiler may complain if given this extra BSD arg. */
+#ifdef GETTIMEOFDAY_ONE_ARGUMENT
+#define EMACS_GETTIMEOFDAY(time) gettimeofday(time)
+#else
+#define EMACS_GETTIMEOFDAY(time) gettimeofday(time,0)
+#endif
+
+/* According to the Xt sources, some NTP daemons on some systems may
+ return non-normalized values. */
+#define EMACS_GET_TIME(time) \
+do { \
+ EMACS_GETTIMEOFDAY (&(time)); \
+ EMACS_NORMALIZE_TIME (time); \
+} while (0)
+
+#define EMACS_NORMALIZE_TIME(time) \
+do { \
+ while ((time).tv_usec >= 1000000) \
+ { \
+ (time).tv_usec -= 1000000; \
+ (time).tv_sec++; \
+ } \
+ while ((time).tv_usec < 0) \
+ { \
+ (time).tv_usec += 1000000; \
+ (time).tv_sec--; \
+ } \
+} while (0)
+
+#define EMACS_ADD_TIME(dest, src1, src2) \
+do { \
+ (dest).tv_sec = (src1).tv_sec + (src2).tv_sec; \
+ (dest).tv_usec = (src1).tv_usec + (src2).tv_usec; \
+ EMACS_NORMALIZE_TIME (dest); \
+} while (0)
+
+#define EMACS_SUB_TIME(dest, src1, src2) \
+do { \
+ (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \
+ (dest).tv_usec = (src1).tv_usec - (src2).tv_usec; \
+ EMACS_NORMALIZE_TIME (dest); \
+} while (0)
+
+#define EMACS_TIME_NEG_P(time) ((long)(time).tv_sec < 0)
+
+#define EMACS_TIME_EQUAL(time1, time2) \
+ ((time1).tv_sec == (time2).tv_sec && \
+ (time1).tv_usec == (time2).tv_usec)
+
+#define EMACS_TIME_GREATER(time1, time2) \
+ ((time1).tv_sec > (time2).tv_sec || \
+ ((time1).tv_sec == (time2).tv_sec && \
+ (time1).tv_usec > (time2).tv_usec))
+
+#define EMACS_TIME_EQUAL_OR_GREATER(time1, time2) \
+ ((time1).tv_sec > (time2).tv_sec || \
+ ((time1).tv_sec == (time2).tv_sec && \
+ (time1).tv_usec >= (time2).tv_usec))
+
+#define EMACS_SET_SECS_USECS(time, secs, usecs) \
+ (EMACS_SET_SECS (time, secs), EMACS_SET_USECS (time, usecs))
+
+#ifdef emacs
+int set_file_times (Lisp_Object path, EMACS_TIME atime, EMACS_TIME mtime);
+#endif
+
+void get_process_times (double *user_time, double *system_time,
+ double *real_time);
+
+#if defined(WIN32_NATIVE) || defined(BROKEN_CYGWIN)
+
+/* setitimer emulation for Win32 (see nt.c) */
+
+struct itimerval
+{
+ struct timeval it_value;
+ struct timeval it_interval;
+};
+
+#define ITIMER_REAL 1
+#define ITIMER_PROF 2
+
+#endif /* WIN32_NATIVE || BROKEN_CYGWIN */
+
+#if defined (WIN32_NATIVE) || defined (CYGWIN)
+
+int mswindows_setitimer (int kind, const struct itimerval *itnew,
+ struct itimerval *itold);
+
+#endif /* defined (WIN32_NATIVE) || defined (CYGWIN) */
+
+/* #### Move this comment elsewhere when we figure out the place.
+
+ "qxe" is a unique prefix used to identify encapsulations of standard
+ library functions. We used to play pre-processing games but in
+ general this leads to nothing but trouble because someone first
+ encountering the code will have no idea that what appears to be a
+ call to a library function has actually been redefined to be a call
+ somewhere else. This is doubly true when the redefinition occurs
+ in out-of-the way s+m files and only on certainly systems.
+
+ By making the encapsulation explicit we might be making the code
+ that uses is slightly less pretty, but this is more than compensated
+ for by the huge increase in clarity.
+
+ "Standard library function" can refer to any function in any
+ standard library. If we are explicitly changing the semantics
+ (e.g. Mule-encapsulating), we should use an extended version of
+ the prefix, e.g. perhaps "qxe_xlat_" for functions that Mule-
+ encapsulate, or "qxe_retry_" for functions that automatically
+ retry a system call interrupted by EINTR. In general, if there
+ is no prefix extension, it means the function is trying to
+ provide (more or less) the same semantics as the standard library
+ function; but be aware that the reimplementation may be incomplete
+ or differ in important respects. This is especially the case
+ when attempts are made to implement Unix functions on MS Windows.
+*/
+
+int qxe_setitimer (int kind, const struct itimerval *itnew,
+ struct itimerval *itold);
+
+#endif /* INCLUDED_systime_h_ */
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