| /* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <errno.h> |
| #include <sys/times.h> |
| #include <sys/time.h> |
| #include <stddef.h> |
| #include <ros/syscall.h> |
| #include <ros/procinfo.h> |
| |
| /* Store the CPU time used by this process and all its |
| dead children (and their dead children) in BUFFER. |
| Return the elapsed real time, or (clock_t) -1 for errors. |
| All times are in CLK_TCKths of a second. */ |
| clock_t |
| __times (struct tms* buf) |
| { |
| extern struct timeval __t0; |
| struct timeval t; |
| if(buf == NULL || __t0.tv_sec == 0) |
| { |
| errno = EINVAL; |
| return (clock_t)-1; |
| } |
| if(gettimeofday(&t,NULL)) |
| return (clock_t)-1; |
| |
| uint64_t utime = (t.tv_sec-__t0.tv_sec)*1000000; |
| utime += t.tv_usec-__t0.tv_usec; |
| buf->tms_utime = buf->tms_cutime = utime*__procinfo.tsc_freq/1000000; |
| buf->tms_stime = buf->tms_cstime = 0; |
| |
| return (clock_t)buf->tms_utime; |
| } |
| weak_alias (__times, times) |
