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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
Lei Zhang
2017/05/17 08:34:17
No (c) and 2017 since this is a new file?
miu
2017/05/18 02:52:38
Even with git similarity at 1%, I was unable to ma
Lei Zhang
2017/05/18 19:06:12
It's not a big deal either way. I usually just loo
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2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "base/time/time.h" | |
6 | |
7 #include <stdint.h> | |
8 #include <sys/time.h> | |
9 #include <time.h> | |
10 | |
11 #include <limits> | |
12 | |
13 #include "base/logging.h" | |
14 | |
15 namespace base { | |
16 | |
17 // static | |
18 TimeDelta TimeDelta::FromTimeSpec(const timespec& ts) { | |
19 return TimeDelta(ts.tv_sec * Time::kMicrosecondsPerSecond + | |
20 ts.tv_nsec / Time::kNanosecondsPerMicrosecond); | |
21 } | |
22 | |
23 struct timespec TimeDelta::ToTimeSpec() const { | |
24 int64_t microseconds = InMicroseconds(); | |
25 time_t seconds = 0; | |
26 if (microseconds >= Time::kMicrosecondsPerSecond) { | |
27 seconds = InSeconds(); | |
28 microseconds -= seconds * Time::kMicrosecondsPerSecond; | |
29 } | |
30 struct timespec result = { | |
31 seconds, | |
32 static_cast<long>(microseconds * Time::kNanosecondsPerMicrosecond)}; | |
33 return result; | |
34 } | |
35 | |
36 // static | |
37 Time Time::FromTimeVal(struct timeval t) { | |
38 DCHECK_LT(t.tv_usec, static_cast<int>(Time::kMicrosecondsPerSecond)); | |
39 DCHECK_GE(t.tv_usec, 0); | |
40 if (t.tv_usec == 0 && t.tv_sec == 0) | |
41 return Time(); | |
42 if (t.tv_usec == static_cast<suseconds_t>(Time::kMicrosecondsPerSecond) - 1 && | |
43 t.tv_sec == std::numeric_limits<time_t>::max()) | |
44 return Max(); | |
45 return Time((static_cast<int64_t>(t.tv_sec) * Time::kMicrosecondsPerSecond) + | |
46 t.tv_usec + kTimeTToMicrosecondsOffset); | |
47 } | |
48 | |
49 struct timeval Time::ToTimeVal() const { | |
50 struct timeval result; | |
51 if (is_null()) { | |
52 result.tv_sec = 0; | |
53 result.tv_usec = 0; | |
54 return result; | |
55 } | |
56 if (is_max()) { | |
57 result.tv_sec = std::numeric_limits<time_t>::max(); | |
58 result.tv_usec = static_cast<suseconds_t>(Time::kMicrosecondsPerSecond) - 1; | |
59 return result; | |
60 } | |
61 int64_t us = us_ - kTimeTToMicrosecondsOffset; | |
62 result.tv_sec = us / Time::kMicrosecondsPerSecond; | |
63 result.tv_usec = us % Time::kMicrosecondsPerSecond; | |
64 return result; | |
65 } | |
66 | |
67 } // namespace base | |
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