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76bd175f | 1 | /* getrusage -- Get resource usage information about processes. Hurd version. |
f7a9f785 | 2 | Copyright (C) 1999-2016 Free Software Foundation, Inc. |
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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 | |
41bdb6e2 AJ |
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. | |
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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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
76bd175f | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
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16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
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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 | |
bd2260a2 | 29 | __getrusage (enum __rusage_who who, struct rusage *usage) |
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30 | { |
31 | struct task_basic_info bi; | |
bde01c31 | 32 | struct task_events_info ei; |
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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 | ||
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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 | ||
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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 | ||
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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 */ | |
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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) |