view lib/gethrxtime.h @ 17364:7524d97ae56f

stdalign: port to stricter ISO C11 ISO C11 says that _Alignof's operand must be a parenthesized type. Problem reported by Eli Zaretskii in <http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>. * doc/posix-headers/stdalign.texi (stdalign.h): Document this. * m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 29 Mar 2013 19:47:13 -0700
parents e542fd46ad6f
children 1f9070ef79b0
line wrap: on
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/* gethrxtime -- get high resolution real time

   Copyright (C) 2005, 2009-2013 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */

/* Written by Paul Eggert.  */

#ifndef GETHRXTIME_H_
#define GETHRXTIME_H_ 1

#include "xtime.h"

_GL_INLINE_HEADER_BEGIN
#ifndef GETHRXTIME_INLINE
# define GETHRXTIME_INLINE _GL_INLINE
#endif

#ifdef  __cplusplus
extern "C" {
#endif

/* Get the current time, as a count of the number of nanoseconds since
   an arbitrary epoch (e.g., the system boot time).  Prefer a
   high-resolution clock that is not subject to resetting or
   drifting.  */

#if HAVE_ARITHMETIC_HRTIME_T && HAVE_DECL_GETHRTIME
# include <time.h>
GETHRXTIME_INLINE xtime_t gethrxtime (void) { return gethrtime (); }
# else
xtime_t gethrxtime (void);
#endif

_GL_INLINE_HEADER_END

#ifdef  __cplusplus
}
#endif

#endif