/src/mozilla-central/dom/base/TimeoutBudgetManager.cpp
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "TimeoutBudgetManager.h" |
8 | | |
9 | | #include "mozilla/dom/Timeout.h" |
10 | | |
11 | | namespace mozilla { |
12 | | namespace dom { |
13 | | |
14 | | // Time between sampling timeout execution time. |
15 | | const uint32_t kTelemetryPeriodMS = 1000; |
16 | | |
17 | | /* static */ TimeoutBudgetManager& |
18 | | TimeoutBudgetManager::Get() |
19 | 0 | { |
20 | 0 | static TimeoutBudgetManager gTimeoutBudgetManager; |
21 | 0 | return gTimeoutBudgetManager; |
22 | 0 | } |
23 | | |
24 | | void |
25 | | TimeoutBudgetManager::StartRecording(const TimeStamp& aNow) |
26 | 0 | { |
27 | 0 | mStart = aNow; |
28 | 0 | } |
29 | | |
30 | | void |
31 | | TimeoutBudgetManager::StopRecording() |
32 | 0 | { |
33 | 0 | mStart = TimeStamp(); |
34 | 0 | } |
35 | | |
36 | | TimeDuration |
37 | | TimeoutBudgetManager::RecordExecution(const TimeStamp& aNow, |
38 | | const Timeout* aTimeout, |
39 | | bool aIsBackground) |
40 | 0 | { |
41 | 0 | if (!mStart) { |
42 | 0 | // If we've started a sync operation mStart might be null, in |
43 | 0 | // which case we should not record this piece of execution. |
44 | 0 | return TimeDuration(); |
45 | 0 | } |
46 | 0 | |
47 | 0 | TimeDuration duration = aNow - mStart; |
48 | 0 |
|
49 | 0 | if (aIsBackground) { |
50 | 0 | if (aTimeout->mIsTracking) { |
51 | 0 | mTelemetryData.mBackgroundTracking += duration; |
52 | 0 | } else { |
53 | 0 | mTelemetryData.mBackgroundNonTracking += duration; |
54 | 0 | } |
55 | 0 | } else { |
56 | 0 | if (aTimeout->mIsTracking) { |
57 | 0 | mTelemetryData.mForegroundTracking += duration; |
58 | 0 | } else { |
59 | 0 | mTelemetryData.mForegroundNonTracking += duration; |
60 | 0 | } |
61 | 0 | } |
62 | 0 |
|
63 | 0 | return duration; |
64 | 0 | } |
65 | | |
66 | | void |
67 | | TimeoutBudgetManager::Accumulate(Telemetry::HistogramID aId, |
68 | | const TimeDuration& aSample) |
69 | 0 | { |
70 | 0 | uint32_t sample = std::round(aSample.ToMilliseconds()); |
71 | 0 | if (sample) { |
72 | 0 | Telemetry::Accumulate(aId, sample); |
73 | 0 | } |
74 | 0 | } |
75 | | |
76 | | void |
77 | | TimeoutBudgetManager::MaybeCollectTelemetry(const TimeStamp& aNow) |
78 | 0 | { |
79 | 0 | if ((aNow - mLastCollection).ToMilliseconds() < kTelemetryPeriodMS) { |
80 | 0 | return; |
81 | 0 | } |
82 | 0 | |
83 | 0 | Accumulate(Telemetry::TIMEOUT_EXECUTION_FG_TRACKING_MS, |
84 | 0 | mTelemetryData.mForegroundTracking); |
85 | 0 | Accumulate(Telemetry::TIMEOUT_EXECUTION_FG_MS, |
86 | 0 | mTelemetryData.mForegroundNonTracking); |
87 | 0 | Accumulate(Telemetry::TIMEOUT_EXECUTION_BG_TRACKING_MS, |
88 | 0 | mTelemetryData.mBackgroundTracking); |
89 | 0 | Accumulate(Telemetry::TIMEOUT_EXECUTION_BG_MS, |
90 | 0 | mTelemetryData.mBackgroundNonTracking); |
91 | 0 |
|
92 | 0 | mTelemetryData = TelemetryData(); |
93 | 0 | mLastCollection = aNow; |
94 | 0 | } |
95 | | |
96 | | } // namespace dom |
97 | | } // namespace mozilla |