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41476327 | 1 | /* Return CPU and real time used by process and its children. Hurd version. |
04277e02 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
41476327 RM |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
41476327 RM |
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; | |
4a39c34c | 45 | time_value_t now; |
41476327 RM |
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 | ||
4a39c34c | 68 | __host_get_time (__mach_host_self (), &now); |
41476327 | 69 | |
4a39c34c | 70 | return (clock_from_time_value (&now) |
768a8fcd | 71 | - clock_from_time_value (&bi.creation_time)); |
41476327 RM |
72 | } |
73 | weak_alias (__times, times) |