forked from mirrors/gecko-dev
106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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/. */
|
|
|
|
#ifndef PerformanceMetricsCollector_h
|
|
#define PerformanceMetricsCollector_h
|
|
|
|
#include "nsIObserver.h"
|
|
#include "nsITimer.h"
|
|
#include "nsID.h"
|
|
#include "nsTHashMap.h"
|
|
#include "mozilla/dom/ChromeUtilsBinding.h" // defines PerformanceInfoDictionary
|
|
#include "mozilla/dom/DOMTypes.h" // defines PerformanceInfo
|
|
#include "mozilla/PerformanceTypes.h"
|
|
|
|
namespace mozilla {
|
|
|
|
namespace dom {
|
|
class Promise;
|
|
}
|
|
|
|
class PerformanceMetricsCollector;
|
|
class AggregatedResults;
|
|
|
|
class IPCTimeout final : public nsITimerCallback, public nsINamed {
|
|
public:
|
|
NS_DECL_NSITIMERCALLBACK
|
|
NS_DECL_NSINAMED
|
|
NS_DECL_ISUPPORTS
|
|
static IPCTimeout* CreateInstance(AggregatedResults* aResults);
|
|
void Cancel();
|
|
|
|
private:
|
|
IPCTimeout(AggregatedResults* aResults, uint32_t aDelay);
|
|
~IPCTimeout();
|
|
|
|
nsCOMPtr<nsITimer> mTimer;
|
|
AggregatedResults* mResults;
|
|
};
|
|
|
|
// AggregatedResults receives PerformanceInfo results that are collected
|
|
// asynchronously via IPDL from all content processes.
|
|
// They are converted into an array of
|
|
// PerformanceInfoDictionary dictionaries (webidl)
|
|
//
|
|
// Once every process have sent back its results, AggregatedResults will
|
|
// resolve the MozPromise returned by GetPromise()
|
|
// with all the collected data.
|
|
//
|
|
// See ChromeUtils::RequestPerformanceMetrics.
|
|
class AggregatedResults final {
|
|
public:
|
|
AggregatedResults(nsID aUUID, PerformanceMetricsCollector* aCollector);
|
|
~AggregatedResults() = default;
|
|
void AppendResult(const nsTArray<dom::PerformanceInfo>& aMetrics);
|
|
void SetNumResultsRequired(uint32_t aNumResultsRequired);
|
|
void Abort(nsresult aReason);
|
|
void ResolveNow();
|
|
RefPtr<RequestMetricsPromise> GetPromise();
|
|
|
|
private:
|
|
RefPtr<IPCTimeout> mIPCTimeout;
|
|
MozPromiseHolder<RequestMetricsPromise> mHolder;
|
|
uint32_t mPendingResults;
|
|
FallibleTArray<dom::PerformanceInfoDictionary> mData;
|
|
|
|
// AggregatedResults keeps a reference on the collector
|
|
// so it gets destructed when all pending AggregatedResults
|
|
// are themselves destructed when removed from
|
|
// PerformanceMetricsCollector::mAggregatedResults.
|
|
//
|
|
// This lifecycle ensures that everything is released once
|
|
// all pending results are sent.
|
|
RefPtr<PerformanceMetricsCollector> mCollector;
|
|
nsID mUUID;
|
|
};
|
|
|
|
//
|
|
// PerformanceMetricsCollector is instanciated as a singleton, and creates
|
|
// one AggregatedResults instance everytime metrics are requested.
|
|
//
|
|
// Each AggregatedResults has a unique identifier (UUID) that is used
|
|
// to send metrics requests via IPDL. When metrics are back in an
|
|
// asynchronous fashion, the UUID is used to append the data to the
|
|
// right AggregatedResults instance and eventually let it resolve the
|
|
// linked promise.
|
|
//
|
|
class PerformanceMetricsCollector final {
|
|
public:
|
|
NS_INLINE_DECL_REFCOUNTING(PerformanceMetricsCollector)
|
|
static RefPtr<RequestMetricsPromise> RequestMetrics();
|
|
static nsresult DataReceived(const nsID& aUUID,
|
|
const nsTArray<dom::PerformanceInfo>& aMetrics);
|
|
void ForgetAggregatedResults(const nsID& aUUID);
|
|
|
|
private:
|
|
~PerformanceMetricsCollector();
|
|
RefPtr<RequestMetricsPromise> RequestMetricsInternal();
|
|
nsresult DataReceivedInternal(const nsID& aUUID,
|
|
const nsTArray<dom::PerformanceInfo>& aMetrics);
|
|
nsTHashMap<nsID, UniquePtr<AggregatedResults>> mAggregatedResults;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
#endif // PerformanceMetricsCollector_h
|