Mercurial > gnulib
view lib/times.c @ 17249:e542fd46ad6f
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | bb182ee4a09d |
children | 344018b6e5d7 |
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/* Get process times Copyright (C) 2008-2013 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 2, 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 Simon Josefsson <simon@josefsson.org>, 2008. */ #include <config.h> /* Get times prototype. */ #include <sys/times.h> /* Get round. */ #include <math.h> /* Get GetProcessTimes etc. */ #include <windows.h> static clock_t filetime2clock (FILETIME time) { float f; /* We have a 64-bit value, in the form of two DWORDS aka unsigned int, counting the number of 100-nanosecond intervals. We need to convert these to clock ticks. Older POSIX uses CLK_TCK to indicate the number of clock ticks per second while modern POSIX uses sysconf(_SC_CLK_TCK). Mingw32 does not appear to have sysconf(_SC_CLK_TCK), but appears to have CLK_TCK = 1000 so we use it. Note that CLOCKS_PER_SEC constant does not apply here, it is for use with the clock function. */ f = (unsigned long long) time.dwHighDateTime << 32; f += time.dwLowDateTime; f = f * CLK_TCK / 10000000; return (clock_t) round (f); } clock_t times (struct tms * buffer) { FILETIME creation_time, exit_time, kernel_time, user_time; if (GetProcessTimes (GetCurrentProcess (), &creation_time, &exit_time, &kernel_time, &user_time) == 0) return (clock_t) -1; buffer->tms_utime = filetime2clock (user_time); buffer->tms_stime = filetime2clock (kernel_time); buffer->tms_cutime = 0; buffer->tms_cstime = 0; return filetime2clock (creation_time); }