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1680d3d7 GS |
1 | /* |
2 | * Copyright (c) 2014 Nicira, Inc. | |
3 | * | |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
18 | #include <errno.h> | |
19 | #include <psapi.h> | |
20 | #include <sys/resource.h> | |
21 | #include <time.h> | |
22 | #include "util.h" | |
e6211adc | 23 | #include "openvswitch/vlog.h" |
1680d3d7 GS |
24 | |
25 | VLOG_DEFINE_THIS_MODULE(getrusage_windows); | |
26 | ||
27 | static void | |
28 | usage_to_timeval(FILETIME *ft, struct timeval *tv) | |
29 | { | |
30 | ULARGE_INTEGER time; | |
31 | time.LowPart = ft->dwLowDateTime; | |
32 | time.HighPart = ft->dwHighDateTime; | |
33 | ||
34 | tv->tv_sec = time.QuadPart / 10000000; | |
35 | tv->tv_usec = (time.QuadPart % 10000000) / 10; | |
36 | } | |
37 | ||
38 | int | |
39 | getrusage(int who, struct rusage *usage) | |
40 | { | |
41 | FILETIME creation_time, exit_time, kernel_time, user_time; | |
42 | PROCESS_MEMORY_COUNTERS pmc; | |
43 | ||
44 | memset(usage, 0, sizeof(struct rusage)); | |
45 | ||
46 | if (who == RUSAGE_SELF) { | |
47 | if (!GetProcessTimes(GetCurrentProcess(), &creation_time, &exit_time, | |
48 | &kernel_time, &user_time)) { | |
49 | VLOG_ERR("failed at GetProcessTimes: %s", | |
50 | ovs_lasterror_to_string()); | |
51 | return -1; | |
52 | } | |
53 | ||
54 | if (!GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc))) { | |
55 | VLOG_ERR("failed at GetProcessMemoryInfo: %s", | |
56 | ovs_lasterror_to_string()); | |
57 | return -1; | |
58 | } | |
59 | ||
60 | usage_to_timeval(&kernel_time, &usage->ru_stime); | |
61 | usage_to_timeval(&user_time, &usage->ru_utime); | |
62 | usage->ru_majflt = pmc.PageFaultCount; | |
63 | usage->ru_maxrss = pmc.PeakWorkingSetSize / 1024; | |
64 | return 0; | |
65 | } else if (who == RUSAGE_THREAD) { | |
66 | if (!GetThreadTimes(GetCurrentThread(), &creation_time, &exit_time, | |
67 | &kernel_time, &user_time)) { | |
68 | VLOG_ERR("failed at GetThreadTimes: %s", | |
69 | ovs_lasterror_to_string()); | |
70 | return -1; | |
71 | } | |
72 | usage_to_timeval(&kernel_time, &usage->ru_stime); | |
73 | usage_to_timeval(&user_time, &usage->ru_utime); | |
74 | return 0; | |
75 | } else { | |
76 | return -1; | |
77 | } | |
78 | } |