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  distributor accepts any responsibility for the consequences of using it, or
  for whether it serves any particular purpose or works at all, unless he or
  she says so in writing.  Refer to the Aladdin Free Public License (the
  "License") for full details.
  
  Every copy of AFPL Ghostscript must include a copy of the License, normally
  in a plain ASCII text file named PUBLIC.  The License grants you the right
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*/

/*$Id: time_.h,v 1.3 2001/06/07 21:04:52 raph Exp $ */
/* Generic substitute for Unix sys/time.h */

#ifndef time__INCLUDED
#  define time__INCLUDED

/* We must include std.h before any file that includes sys/types.h. */
#include "std.h"

/*
 * The location (or existence) of certain system headers is
 * environment-dependent. We detect this in the makefile
 * and conditionally define switches in gconfig_.h.
 */
#include "gconfig_.h"

/*
 * Some System V environments don't include sys/time.h.
 * The HAVE_SYS_TIME_H switch in gconfig_.h reflects this.
 */
#ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
#  if defined(Plan9) || defined(M_UNIX) || defined(_IBMR2) || defined(_SEQUENT_) || defined(__GNUC__)
     /* Plan 9, SCO, AIX and Sequent's DYNIX/ptx need both time.h and
        sys/time.h! As of version 2.2, at least some glibc
        installations also require both files. */
#    include <time.h>
#  endif
#else
#  include <time.h>
#  ifndef __DECC
struct timeval {
    long tv_sec, tv_usec;
};

#  endif
struct timezone {
    int tz_minuteswest, tz_dsttime;
};

#endif

#if defined(ultrix) && defined(mips)
/*
 * Apparently some versions of Ultrix for the DECstation include
 * time_t in sys/time.h, and some don't.  If you get errors
 * compiling gp_unix.c, uncomment the next line.
 */
/*      typedef int     time_t; */
#endif

/*
 * In SVR4.0 (but not other System V implementations),
 * gettimeofday doesn't take a timezone argument.
 */
#ifdef SVR4_0
#  define gettimeofday_no_timezone 1
#else
#  define gettimeofday_no_timezone 0
#endif

/* Some System V environments, and Posix environments, need <sys/times.h>. */
#ifdef HAVE_SYS_TIMES_H
#  include <sys/times.h>
#  define use_times_for_usertime 1
		/* Posix 1003.1b-1993 section 4.8.1.5 says that
		   CLK_TCK is obsolescent and that sysconf(_SC_CLK_TCK)
		   should be used instead, but this requires including
		   <unistd.h>, which is too painful to configure.  */
#  ifndef CLK_TCK
#    define CLK_TCK 100		/* guess for older hosts */
#  endif
#else
#  define use_times_for_usertime 0
#endif

#endif /* time__INCLUDED */
