gprofng/libcollector/gethrtime.c

   1 /* Copyright (C) 2021-2023 Free Software Foundation, Inc.
   2    Contributed by Oracle.
   3
   4    This file is part of GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "config.h"
  22 #include <time.h>
  23 #include "gp-time.h"
  24
  25 /*  CLOCK_MONOTONIC
  26     Clock that cannot be set and represents monotonic time since some
  27              unspecified starting point.  */
  28
  29 static hrtime_t
  30 linux_gethrtime (void)
  31 {
  32   struct timespec tp;
  33   hrtime_t rc = 0;
  34
  35 #ifdef CLOCK_MONOTONIC_RAW
  36   int r = clock_gettime (CLOCK_MONOTONIC_RAW, &tp);
  37 #else
  38   int r = clock_gettime (CLOCK_MONOTONIC, &tp);
  39 #endif
  40
  41   if (r == 0)
  42     rc = ((hrtime_t) tp.tv_sec)*1000000000 + (hrtime_t) tp.tv_nsec;
  43   return rc;
  44 }
  45
  46 hrtime_t (*__collector_gethrtime)() = linux_gethrtime;