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binutils-gdb/gprofng/libcollector/gethrtime.c

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/* Copyright (C) 2021-2024 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
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, 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, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "config.h"
#include <time.h>
#include "gp-time.h"
/* CLOCK_MONOTONIC
Clock that cannot be set and represents monotonic time since some
unspecified starting point. */
static hrtime_t
linux_gethrtime (void)
{
struct timespec tp;
hrtime_t rc = 0;
#ifdef CLOCK_MONOTONIC_RAW
int r = clock_gettime (CLOCK_MONOTONIC_RAW, &tp);
#else
int r = clock_gettime (CLOCK_MONOTONIC, &tp);
#endif
if (r == 0)
rc = ((hrtime_t) tp.tv_sec)*1000000000 + (hrtime_t) tp.tv_nsec;
return rc;
}
hrtime_t (*__collector_gethrtime)() = linux_gethrtime;