| /* Return CPU and real time used by process and its children. Hurd version. |
| Copyright (C) 2001-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <stddef.h> |
| #include <sys/resource.h> |
| #include <sys/times.h> |
| #include <sys/time.h> |
| #include <time.h> |
| #include <mach.h> |
| #include <mach/task_info.h> |
| #include <hurd.h> |
| |
| static inline clock_t |
| clock_from_time_value (const time_value_t *t) |
| { |
| return t->seconds * 1000000 + t->microseconds; |
| } |
| |
| /* 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 *tms) |
| { |
| struct task_basic_info bi; |
| struct task_thread_times_info tti; |
| mach_msg_type_number_t count; |
| union { time_value_t tvt; struct timeval tv; } now; |
| error_t err; |
| |
| count = TASK_BASIC_INFO_COUNT; |
| err = __task_info (__mach_task_self (), TASK_BASIC_INFO, |
| (task_info_t) &bi, &count); |
| if (err) |
| return __hurd_fail (err); |
| |
| count = TASK_THREAD_TIMES_INFO_COUNT; |
| err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO, |
| (task_info_t) &tti, &count); |
| if (err) |
| return __hurd_fail (err); |
| |
| tms->tms_utime = (clock_from_time_value (&bi.user_time) |
| + clock_from_time_value (&tti.user_time)); |
| tms->tms_stime = (clock_from_time_value (&bi.system_time) |
| + clock_from_time_value (&tti.system_time)); |
| |
| /* XXX This can't be implemented until getrusage(RUSAGE_CHILDREN) can be. */ |
| tms->tms_cutime = tms->tms_cstime = 0; |
| |
| if (__gettimeofday (&now.tv, NULL) < 0) |
| return -1; |
| |
| return (clock_from_time_value (&now.tvt) |
| - clock_from_time_value (&bi.creation_time)); |
| } |
| weak_alias (__times, times) |