xtime.h

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Hash : 82ff49b5
Author :
Date : 2006-08-21T06:11:26

Add and change modules to make it easier for coreutils to use
gnulib-tool.

* lib/cycle-check.h: Include <stdint.h> unconditionally, since we
now assume the stdint module.  Do not include inttypes.h.
* lib/fsusage.h: Likewise.
* lib/getndelim2.c: Likewise.
* lib/human.h: Likewise.
* lib/inttostr.h: Likewise.
* lib/obstack.c: Likewise.
* lib/regex_internal.h: Likewise.
* lib/tempname.c: Likewise.
* lib/utimecmp.c: Likewise.
* lib/xstrtol.h: Likewise.

* lib/stat_.h: Fix typo: HAVE_FUNC_LSTAT -> HAVE_LSTAT.

* lib/strtoimax.c: Adjust to macro name changes in Autoconf,
e.g., HAVE_LONG_LONG -> HAVE_LONG_LONG_INT.
* lib/xtime.h: Likewise.

Remove files that are no longer needed by their respective modules.
* m4/obstack.m4: Remove.
* m4/strerror_r.m4: Remove.
* m4/uint32_t.m4: Remove.
* m4/uintptr_t.m4: Remove.
* m4/ullong_max.m4: Remove.
* m4/xstrtoimax.m4: Remove.
* m4/xstrtoumax.m4: Remove.

* cycle-check.m4 (gl_CYCLE_CHECK): Do not require gl_AC_TYPE_UINTMAX_T,
gl_STRUCT_DEV_INO, or gl_SAME_INODE, since gnulib dependencies now
capture this.

* cycle-check.m4 (gl_CYCLE_CHECK):
Do not use AC_LIBSOURCES, since gnulib modules now do this.
* fsusage.m4 (gl_FSUSAGE): Likewise.
* human.m4 (gl_HUMAN): Likewise.
* inttostr.m4 (gl_INTTOSTR): Likewise.
* xstrtol.m4 (gl_XSTRTOL): Likewise.

* filemode.m4 (gl_FILEMODE): Require AC_STRUCT_ST_DM_MODE.

* filemode.m4 (gl_PREREQ_FSUSAGE_EXTRA): Do not require
gl_AC_TYPE_INTMAX_T or gl_AC_TYPE_UINTMAX_T, since we now require
stdint.
* human.m4 (gl_HUMAN): Likewise.
* inttostr.m4 (gl_PREREQ_INTTOSTR): Likewise.
* mkstemp.m4 (gl_PREREQ_TEMPNAME): Likewise.
* strtoimax.m4 (gl_PREREQ_STRTOIMAX): Likewise.
* strtoumax.m4 (gl_PREREQ_STRTOUMAX): Likewise.
* xstrtol (gl_XSTRTOL): Likewise.

* gethrxtime.m4 (gl_XTIME): gl_AC_TYPE_LONG_LONG ->
AC_TYPE_LONG_LONG_INT.
* strtoimax.m4 (gl_PREREQ_STRTOIMAX): Likewise.
* strtoll.m4 (gl_FUNC_STRTOLL): Likewise.
* strtoull.m4 (gl_FUNC_STRTOULL): Likewise, for unsigned long.
* strtoumax.m4 (gl_PREREQ_STRTOUMAX): Likewise.

* human.m4 (gl_HUMAN): Do not require AM_STDBOOL_H since we depend
on stdbool.

* xstrtol.m4 (gl_PREREQ_XSTRTOL_H, gl_PREREQ_XSTRTOL): Remove.
(gl_PREREQ_XSTRTOUL): Remove.

* ls-mntd-fs.m4 (gl_LIST_MOUNTED_FILE_SYSTEMS): Check for hasmntopt.

* posixver.m4: Fix comment since head -1 now works even in POSIX mode.

* modules/backupfile (Files): Remove m4/d-ino.m4.
(Depends-on): Add d-ino.
* modules/cycle-check (Depends-on): Add stdint.
(lib_SOURCES): Add cycle-check.h.
* modules/d-ino: New module.
* modules/d-type: New module.
* modules/error (Files): Remove m4/strerror_r.m4.
* modules/filemode (Files): Add m4/st_dm_mode.m4.
* modules/fsuage (Files): Remove m4/ulonglong.m4, m4/stdint_h.m4,
m4/inttypes_h.m4, m4/uintmax_t.m4.
(Depends-on): Add stdint.
(lib_SOURCES): Add fsusage.h.
* modules/getcwd (Files): Remove d-ino.m4.
(Depends-on): Add d-ino.
* modules/getndelim2 (Depends-on): Add stdint.
* modules/glob (Files): Remove m4/d-type.m4.
(Depends-on): Add d-type.
* modules/host-os: New module.
* modules/human (Files):  Remove m4/ulonglong.m4, m4/stdint_h.m4,
m4/inttypes_h.m4, m4/uintmax_t.m4.
* Depends-on: Add stdint.
(lib_SOURCES): Add human.h.
* modules/inttostr (Files): Remove m4/intmax_t.m4,
m4/inttostr.m4, m4/inttypes_h.m4, m4/longlong.m4, m4/stdint_h.m4,
m4/uintmax_t.m4, m4/ulonglong.m4.
(Depends-on): Add stdint.
(EXTRA_DIST): Add inttostr.h.
* modules/lchmod: New module.
* modules/link-follow: New module.
* modules/mkdir-p (Files): Remove lib/lchmod.h, m4/lchmod.m4.
(Depends-on): Add lchmod.
* modules/mkstemp (Files): Remove m4/ulonglong.m4,
m4/stdint_h.m4, m4/inttypes_h.m4, m4/uintmax_t.m4.
(Depends-on): Add stdint.
* modules/obstack (Files): Remove m4/inttypes_h.m4, m4/obstack.m4,
m4/stdint_h.m4, m4/uintmax_t.m4, m4/ulonglong.m4.
(Depends-on): Add stdint.
(configure.ac): Change gl_OBSTACK to AC_FUNC_OBSTACK.
* modules/perl: New module.
* modules/regex (Depends-on): Add stdint.
* modules/rmdir-errno: New module.
* modules/strtoimax (Files): Remove m4/stdint_h.m4, m4/inttypes_h.m4,
m4/intmax_t.m4.
(Depends-on): Add stdint.
* modules/strtoumax (Files): Remove m4/stdint_h.m4, m4/inttypes_h.m4,
m4/uintmax_t.m4.
(Depends-on): Add stdint.
* modules/unlink-busy: New module.
* modules/utimecmp (Depends-on): Add stdint.
* modules/uptime: New module.
* modules/winsz-ioctl: New module.
* modules/winsz-termios: New module.
* modules/xnanosleep (Depends-on): Add nanosleep.
* modules/ullong_max: Remove.
* modules/xstrtoimax (Files): Remove m4/xstrtoimax.m4.
(configure.ac): Remove gl_XSTRTOIMAX; no action needed now.
* modules/xstrtol (Files): Remove m4/ulonglong.m4, m4/longlong.m4,
m4/stdint_h.m4, m4/inttypes_h.m4, m4/uintmax_t.m4, m4/intmax_t.m4.
(Depends-on): Add inttypes.
(lib_SOURCES): Add xstrtol.h.
* modules/xstrtoumax (Files): Remove m4/xstrtoumax.m4.
(configure.ac): Remove gl_XSTRTOUMAX; no action needed now.
* MODULES.html.sh: Move 'assert' into the assert section.
Move 'dummy' into the linking section.
Remove ullong_max.
Add section for compatibility checks for POSIX:2001 functions,
and put d-ino, d-type, link-follow, rmdir-errno, unlink-busy,
winsz-ioctl, and winsz-termios into it.
Add lchmod.
Add top-level Misc section and put host-os, perl, and uptime
into it.

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lib/xtime.h

/* xtime -- extended-resolution integer time stamps

   Copyright (C) 2005, 2006 Free Software Foundation, Inc.

   This program 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.

   This program 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 this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* Written by Paul Eggert.  */

#ifndef XTIME_H_
# define XTIME_H_ 1

/* xtime_t is a signed type used for time stamps.  It is an integer
   type that is a count of nanoseconds -- except for obsolescent hosts
   without sufficiently-wide integers, where it is a count of
   seconds.  */
# if HAVE_LONG_LONG_INT
typedef long long int xtime_t;
#  define XTIME_PRECISION 1000000000
# else
#  include <limits.h>
typedef long int xtime_t;
#  if LONG_MAX >> 31 >> 31 == 0
#   define XTIME_PRECISION 1
#  else
#   define XTIME_PRECISION 1000000000
#  endif
# endif

/* Return an extended time value that contains S seconds and NS
   nanoseconds, without any overflow checking.  */
static inline xtime_t
xtime_make (xtime_t s, long int ns)
{
  if (XTIME_PRECISION == 1)
    return s;
  else
    return XTIME_PRECISION * s + ns;
}

/* Return the number of seconds in T, which must be nonnegative.  */
static inline xtime_t
xtime_nonnegative_sec (xtime_t t)
{
  return t / XTIME_PRECISION;
}

/* Return the number of seconds in T.  */
static inline xtime_t
xtime_sec (xtime_t t)
{
  return (XTIME_PRECISION == 1
	  ? t
	  : t < 0
	  ? (t + XTIME_PRECISION - 1) / XTIME_PRECISION - 1
	  : xtime_nonnegative_sec (t));
}

/* Return the number of nanoseconds in T, which must be nonnegative.  */
static inline long int
xtime_nonnegative_nsec (xtime_t t)
{
  return t % XTIME_PRECISION;
}

/* Return the number of nanoseconds in T.  */
static inline long int
xtime_nsec (xtime_t t)
{
  long int ns = t % XTIME_PRECISION;
  if (ns < 0)
    ns += XTIME_PRECISION;
  return ns;
}

#endif

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kc3-lang/gnulib/lib/xtime.h

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lib/xtime.h