mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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153 lines
3.6 KiB
C++
153 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef Telemetry_h__
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#define Telemetry_h__
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#include "mozilla/GuardObjects.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/StartupTimeline.h"
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#include "nsTArray.h"
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#include "nsStringGlue.h"
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#if defined(MOZ_ENABLE_PROFILER_SPS)
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#include "shared-libraries.h"
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#endif
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namespace base {
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class Histogram;
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}
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namespace mozilla {
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namespace Telemetry {
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enum ID {
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#define HISTOGRAM(name, a, b, c, d, e) name,
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#include "TelemetryHistograms.h"
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#undef HISTOGRAM
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HistogramCount
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};
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/**
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* Initialize the Telemetry service on the main thread at startup.
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*/
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void Init();
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/**
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* Adds sample to a histogram defined in TelemetryHistograms.h
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*
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* @param id - histogram id
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* @param sample - value to record.
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*/
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void Accumulate(ID id, PRUint32 sample);
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/**
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* Adds time delta in milliseconds to a histogram defined in TelemetryHistograms.h
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*
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* @param id - histogram id
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* @param start - start time
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* @param end - end time
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*/
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void AccumulateTimeDelta(ID id, TimeStamp start, TimeStamp end = TimeStamp::Now());
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/**
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* Return a raw Histogram for direct manipulation for users who can not use Accumulate().
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*/
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base::Histogram* GetHistogramById(ID id);
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template<ID id>
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class AutoTimer {
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public:
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AutoTimer(TimeStamp aStart = TimeStamp::Now() MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: start(aStart)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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}
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~AutoTimer() {
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AccumulateTimeDelta(id, start);
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}
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private:
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const TimeStamp start;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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template<ID id>
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class AutoCounter {
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public:
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AutoCounter(PRUint32 counterStart = 0 MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: counter(counterStart)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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}
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~AutoCounter() {
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Accumulate(id, counter);
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}
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// Prefix increment only, to encourage good habits.
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void operator++() {
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++counter;
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}
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// Chaining doesn't make any sense, don't return anything.
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void operator+=(int increment) {
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counter += increment;
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}
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private:
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PRUint32 counter;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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/**
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* Indicates whether Telemetry recording is turned on. This is intended
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* to guard calls to Accumulate when the statistic being recorded is
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* expensive to compute.
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*/
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bool CanRecord();
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/**
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* Records slow SQL statements for Telemetry reporting.
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*
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* @param statement - offending SQL statement to record
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* @param dbName - DB filename
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* @param delay - execution time in milliseconds
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* @param isDynamicString - prepared statement or a dynamic string
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*/
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void RecordSlowSQLStatement(const nsACString &statement,
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const nsACString &dbName,
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PRUint32 delay,
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bool isDynamicString);
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/**
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* Threshold for a statement to be considered slow, in milliseconds
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*/
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const PRUint32 kSlowStatementThreshold = 100;
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/**
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* nsTArray of pointers representing PCs on a call stack
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*/
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typedef nsTArray<uintptr_t> HangStack;
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/**
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* Record the main thread's call stack after it hangs.
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*
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* @param duration - Approximate duration of main thread hang in seconds
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* @param callStack - Array of PCs from the hung call stack
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* @param moduleMap - Array of info about modules in memory (for symbolication)
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*/
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#if defined(MOZ_ENABLE_PROFILER_SPS)
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void RecordChromeHang(PRUint32 duration,
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const HangStack &callStack,
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SharedLibraryInfo &moduleMap);
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#endif
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} // namespace Telemetry
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} // namespace mozilla
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#endif // Telemetry_h__
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