gecko-dev/xpcom/threads/PerformanceCounter.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Logging.h"
#include "mozilla/PerformanceCounter.h"
using mozilla::DispatchCategory;
using mozilla::DispatchCounter;
using mozilla::PerformanceCounter;
static mozilla::LazyLogModule sPerformanceCounter("PerformanceCounter");
#ifdef LOG
# undef LOG
#endif
#define LOG(args) MOZ_LOG(sPerformanceCounter, mozilla::LogLevel::Debug, args)
// Global counter used by PerformanceCounter CTOR via NextCounterID().
static mozilla::Atomic<uint64_t> gNextCounterID(0);
static uint64_t NextCounterID() {
// This can return the same value on different processes but
// we're fine with this behavior because consumers can use a (pid, counter_id)
// tuple to make instances globally unique in a browser session.
return ++gNextCounterID;
}
// this instance is the extension for the worker
const DispatchCategory DispatchCategory::Worker =
DispatchCategory((uint32_t)TaskCategory::Count);
PerformanceCounter::PerformanceCounter(const nsACString& aName)
: mExecutionDuration(0),
mTotalDispatchCount(0),
mDispatchCounter(),
mName(aName),
mID(NextCounterID()) {
LOG(("PerformanceCounter created with ID %" PRIu64, mID));
}
void PerformanceCounter::IncrementDispatchCounter(DispatchCategory aCategory) {
mDispatchCounter[aCategory.GetValue()] += 1;
mTotalDispatchCount += 1;
LOG(("[%s][%" PRIu64 "] Total dispatch %" PRIu64, mName.get(), GetID(),
uint64_t(mTotalDispatchCount)));
}
void PerformanceCounter::IncrementExecutionDuration(uint32_t aMicroseconds) {
mExecutionDuration += aMicroseconds;
LOG(("[%s][%" PRIu64 "] Total duration %" PRIu64, mName.get(), GetID(),
uint64_t(mExecutionDuration)));
}
const DispatchCounter& PerformanceCounter::GetDispatchCounter() const {
return mDispatchCounter;
}
uint64_t PerformanceCounter::GetExecutionDuration() const {
return mExecutionDuration;
}
uint64_t PerformanceCounter::GetTotalDispatchCount() const {
return mTotalDispatchCount;
}
uint32_t PerformanceCounter::GetDispatchCount(
DispatchCategory aCategory) const {
return mDispatchCounter[aCategory.GetValue()];
}
uint64_t PerformanceCounter::GetID() const { return mID; }