1 | /* getrusage -- Get resource usage information about processes. Hurd version. |
2 | Copyright (C) 1999-2022 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 <string.h> |
21 | #include <sys/resource.h> |
22 | #include <mach.h> |
23 | #include <mach/task_info.h> |
24 | #include <hurd.h> |
25 | |
26 | /* Return resource usage information on process indicated by WHO |
27 | and put it in *USAGE. Returns 0 for success, -1 for failure. */ |
28 | int |
29 | __getrusage (enum __rusage_who who, struct rusage *usage) |
30 | { |
31 | struct task_basic_info bi; |
32 | struct task_events_info ei; |
33 | struct task_thread_times_info tti; |
34 | mach_msg_type_number_t count; |
35 | error_t err; |
36 | |
37 | switch (who) |
38 | { |
39 | case RUSAGE_SELF: |
40 | count = TASK_BASIC_INFO_COUNT; |
41 | err = __task_info (__mach_task_self (), TASK_BASIC_INFO, |
42 | (task_info_t) &bi, &count); |
43 | if (err) |
44 | return __hurd_fail (err); |
45 | |
46 | count = TASK_EVENTS_INFO_COUNT; |
47 | err = __task_info (__mach_task_self (), TASK_EVENTS_INFO, |
48 | (task_info_t) &ei, &count); |
49 | if (err == KERN_INVALID_ARGUMENT) /* microkernel doesn't implement it */ |
50 | memset (&ei, 0, sizeof ei); |
51 | else 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 | time_value_add (&bi.user_time, &tti.user_time); |
61 | time_value_add (&bi.system_time, &tti.system_time); |
62 | |
63 | memset (usage, 0, sizeof (struct rusage)); |
64 | |
65 | usage->ru_utime.tv_sec = bi.user_time.seconds; |
66 | usage->ru_utime.tv_usec = bi.user_time.microseconds; |
67 | usage->ru_stime.tv_sec = bi.system_time.seconds; |
68 | usage->ru_stime.tv_usec = bi.system_time.microseconds; |
69 | |
70 | /* These statistics map only approximately. */ |
71 | usage->ru_majflt = ei.pageins; |
72 | usage->ru_minflt = ei.faults - ei.pageins; |
73 | usage->ru_msgsnd = ei.messages_sent; /* Mach IPC, not SysV IPC */ |
74 | usage->ru_msgrcv = ei.messages_received; /* Mach IPC, not SysV IPC */ |
75 | break; |
76 | |
77 | case RUSAGE_CHILDREN: |
78 | /* XXX Not implemented yet. However, zero out USAGE to be |
79 | consistent with the wait3 and wait4 functions. */ |
80 | memset (usage, 0, sizeof (struct rusage)); |
81 | |
82 | break; |
83 | |
84 | default: |
85 | return EINVAL; |
86 | } |
87 | |
88 | return 0; |
89 | } |
90 | |
91 | weak_alias (__getrusage, getrusage) |
92 | |