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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
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/profiler/tracked_time.h" | |
6 | |
7 #include "build/build_config.h" | |
8 | |
9 #if defined(OS_WIN) | |
10 #include <mmsystem.h> // Declare timeGetTime()... after including build_config. | |
11 #endif | |
12 | |
13 namespace tracked_objects { | |
14 | |
15 #if defined(USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) | |
16 | |
17 Duration::Duration() : ms_(0) {} | |
18 Duration::Duration(int32 duration) : ms_(duration) {} | |
19 | |
20 Duration& Duration::operator+=(const Duration& other) { | |
21 ms_ += other.ms_; | |
22 return *this; | |
23 } | |
24 | |
25 Duration Duration::operator+(const Duration& other) const { | |
26 return Duration(ms_ + other.ms_); | |
27 } | |
28 | |
29 bool Duration::operator==(const Duration& other) const { | |
30 return ms_ == other.ms_; | |
31 } | |
32 | |
33 bool Duration::operator!=(const Duration& other) const { | |
34 return ms_ != other.ms_; | |
35 } | |
36 | |
37 bool Duration::operator>(const Duration& other) const { | |
38 return ms_ > other.ms_; | |
39 } | |
40 | |
41 // static | |
42 Duration Duration::FromMilliseconds(int ms) { return Duration(ms); } | |
43 | |
44 int32 Duration::InMilliseconds() const { return ms_; } | |
45 | |
46 //------------------------------------------------------------------------------ | |
47 | |
48 TrackedTime::TrackedTime() : ms_(0) {} | |
49 TrackedTime::TrackedTime(int32 ms) : ms_(ms) {} | |
50 TrackedTime::TrackedTime(const base::TimeTicks& time) | |
51 : ms_((time - base::TimeTicks()).InMilliseconds()) { | |
52 } | |
53 | |
54 // static | |
55 TrackedTime TrackedTime::Now() { | |
56 #if defined(OS_WIN) | |
57 // Use lock-free accessor to 32 bit time. | |
58 // Note that TimeTicks::Now() is built on this, so we have "compatible" | |
59 // times when we down-convert a TimeTicks sample. | |
60 // TODO(jar): Surface this interface via something in base/time.h. | |
61 return TrackedTime(static_cast<int32>(timeGetTime())); | |
62 #else | |
63 // Posix has nice cheap 64 bit times, so we just down-convert it. | |
64 return TrackedTime(base::TimeTicks::Now()); | |
65 #endif // OS_WIN | |
66 } | |
67 | |
68 Duration TrackedTime::operator-(const TrackedTime& other) const { | |
69 return Duration(ms_ - other.ms_); | |
70 } | |
71 | |
72 TrackedTime TrackedTime::operator+(const Duration& other) const { | |
73 return TrackedTime(ms_ + other.ms_); | |
74 } | |
75 | |
76 bool TrackedTime::is_null() const { return ms_ == 0; } | |
77 | |
78 #endif // USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS | |
79 | |
80 } // namespace tracked_objects | |
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