sysdeps/mach/hurd/clock.c

   1 /* Return the CPU time used by the program so far.  Hurd version.
   2    Copyright (C) 2001-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <time.h>
  20 #include <sys/time.h>
  21 #include <mach.h>
  22 #include <mach/task_info.h>
  23 #include <hurd.h>
  24
  25 /* Return the time used by the program so far (user time + system time).  */
  26 clock_t
  27 clock (void)
  28 {
  29   struct task_basic_info bi;
  30   struct task_thread_times_info tti;
  31   mach_msg_type_number_t count;
  32   clock_t total;
  33   error_t err;
  34
  35   count = TASK_BASIC_INFO_COUNT;
  36   err = __task_info (__mach_task_self (), TASK_BASIC_INFO,
  37                      (task_info_t) &bi, &count);
  38   if (err)
  39     return __hurd_fail (err);
  40
  41   count = TASK_THREAD_TIMES_INFO_COUNT;
  42   err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO,
  43                      (task_info_t) &tti, &count);
  44   if (err)
  45     return __hurd_fail (err);
  46
  47   total = bi.user_time.seconds * 1000000 + bi.user_time.microseconds;
  48   total += tti.user_time.seconds * 1000000 + tti.user_time.microseconds;
  49   total += bi.system_time.seconds * 1000000 + bi.system_time.microseconds;
  50   total += tti.system_time.seconds * 1000000 + tti.system_time.microseconds;
  51
  52   return total;
  53 }