1 | /* Return CPU and real time used by process and its children. Hurd version. |
2 | Copyright (C) 2001-2022 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 <errno.h> |
20 | #include <stddef.h> |
21 | #include <sys/resource.h> |
22 | #include <sys/times.h> |
23 | #include <sys/time.h> |
24 | #include <time.h> |
25 | #include <mach.h> |
26 | #include <mach/task_info.h> |
27 | #include <hurd.h> |
28 | |
29 | static inline clock_t |
30 | clock_from_time_value (const time_value_t *t) |
31 | { |
32 | return t->seconds * 1000000 + t->microseconds; |
33 | } |
34 | |
35 | /* Store the CPU time used by this process and all its |
36 | dead children (and their dead children) in BUFFER. |
37 | Return the elapsed real time, or (clock_t) -1 for errors. |
38 | All times are in CLK_TCKths of a second. */ |
39 | clock_t |
40 | __times (struct tms *tms) |
41 | { |
42 | struct task_basic_info bi; |
43 | struct task_thread_times_info tti; |
44 | mach_msg_type_number_t count; |
45 | time_value_t now; |
46 | error_t err; |
47 | |
48 | count = TASK_BASIC_INFO_COUNT; |
49 | err = __task_info (__mach_task_self (), TASK_BASIC_INFO, |
50 | (task_info_t) &bi, &count); |
51 | if (err) |
52 | return __hurd_fail (err); |
53 | |
54 | count = TASK_THREAD_TIMES_INFO_COUNT; |
55 | err = __task_info (__mach_task_self (), TASK_THREAD_TIMES_INFO, |
56 | (task_info_t) &tti, &count); |
57 | if (err) |
58 | return __hurd_fail (err); |
59 | |
60 | tms->tms_utime = (clock_from_time_value (&bi.user_time) |
61 | + clock_from_time_value (&tti.user_time)); |
62 | tms->tms_stime = (clock_from_time_value (&bi.system_time) |
63 | + clock_from_time_value (&tti.system_time)); |
64 | |
65 | /* XXX This can't be implemented until getrusage(RUSAGE_CHILDREN) can be. */ |
66 | tms->tms_cutime = tms->tms_cstime = 0; |
67 | |
68 | __host_get_time (__mach_host_self (), &now); |
69 | |
70 | return (clock_from_time_value (&now) |
71 | - clock_from_time_value (&bi.creation_time)); |
72 | } |
73 | weak_alias (__times, times) |
74 | |