1  /* gethrxtime -- get high resolution real time
       2  
       3     Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc.
       4  
       5     This program is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3 of the License, or
       8     (at your option) any later version.
       9  
      10     This program is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU General Public License for more details.
      14  
      15     You should have received a copy of the GNU General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  /* Written by Paul Eggert.  */
      19  
      20  #ifndef GETHRXTIME_H_
      21  #define GETHRXTIME_H_ 1
      22  
      23  #include "xtime.h"
      24  
      25  #ifndef _GL_INLINE_HEADER_BEGIN
      26   #error "Please include config.h first."
      27  #endif
      28  _GL_INLINE_HEADER_BEGIN
      29  #ifndef GETHRXTIME_INLINE
      30  # define GETHRXTIME_INLINE _GL_INLINE
      31  #endif
      32  
      33  #ifdef  __cplusplus
      34  extern "C" {
      35  #endif
      36  
      37  /* Get the current time, as a count of the number of nanoseconds since
      38     an arbitrary epoch (e.g., the system boot time).  Prefer a
      39     high-resolution clock that is not subject to resetting or
      40     drifting.  */
      41  
      42  #if HAVE_ARITHMETIC_HRTIME_T && HAVE_DECL_GETHRTIME
      43  # include <time.h>
      44  GETHRXTIME_INLINE xtime_t gethrxtime (void) { return gethrtime (); }
      45  # else
      46  xtime_t gethrxtime (void);
      47  #endif
      48  
      49  _GL_INLINE_HEADER_END
      50  
      51  #ifdef  __cplusplus
      52  }
      53  #endif
      54  
      55  #endif