2020-06-15 14:18:57 +00:00
|
|
|
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
|
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
|
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
|
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
|
|
|
│ │
|
|
|
|
|
│ 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; version 2 of the License. │
|
|
|
|
|
│ │
|
|
|
|
|
│ 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 │
|
|
|
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
|
|
|
#include "libc/calls/struct/timespec.h"
|
|
|
|
|
#include "libc/sysv/consts/clock.h"
|
|
|
|
|
#include "libc/time/time.h"
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Returns how much CPU program has consumed on time-sharing system.
|
|
|
|
|
*
|
|
|
|
|
* @return value that can be divided by CLOCKS_PER_SEC, or -1 w/ errno
|
2020-12-27 15:02:35 +00:00
|
|
|
* @see clock_gettime()
|
2020-06-15 14:18:57 +00:00
|
|
|
*/
|
|
|
|
|
int64_t clock(void) {
|
|
|
|
|
struct timespec ts;
|
|
|
|
|
if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == -1) return -1;
|
|
|
|
|
return ts.tv_sec * CLOCKS_PER_SEC +
|
|
|
|
|
ts.tv_nsec / (1000000000 / CLOCKS_PER_SEC);
|
|
|
|
|
}
|
