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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/. */
#ifndef nsProfiler_h
#define nsProfiler_h
#include "base/process.h"
#include "mozilla/Attributes.h"
#include "mozilla/Maybe.h"
#include "mozilla/MozPromise.h"
#include "mozilla/ProfileJSONWriter.h"
#include "mozilla/ProportionValue.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/Vector.h"
#include "nsIProfiler.h"
#include "nsITimer.h"
#include "nsServiceManagerUtils.h"
#include "ProfilerCodeAddressService.h"
#include "ProfileAdditionalInformation.h"
namespace Json {
class Value;
} // namespace Json
class nsProfiler final : public nsIProfiler {
public:
nsProfiler();
NS_DECL_ISUPPORTS
NS_DECL_NSIPROFILER
nsresult Init();
static nsProfiler* GetOrCreate() {
nsCOMPtr<nsIProfiler> iprofiler =
do_GetService("@mozilla.org/tools/profiler;1");
return static_cast<nsProfiler*>(iprofiler.get());
}
private:
~nsProfiler();
using GatheringPromiseAndroid =
mozilla::MozPromise<FallibleTArray<uint8_t>, nsresult, true>;
using GatheringPromise =
mozilla::MozPromise<mozilla::ProfileAndAdditionalInformation, nsresult,
false>;
using SymbolTablePromise =
mozilla::MozPromise<mozilla::SymbolTable, nsresult, true>;
RefPtr<GatheringPromise> StartGathering(double aSinceTime);
void GatheredOOPProfile(
base::ProcessId aChildPid, const nsACString& aProfile,
mozilla::Maybe<mozilla::ProfileGenerationAdditionalInformation>&&
aAdditionalInformation);
void FinishGathering();
void ResetGathering(nsresult aPromiseRejectionIfPending);
static void GatheringTimerCallback(nsITimer* aTimer, void* aClosure);
void RestartGatheringTimer();
RefPtr<SymbolTablePromise> GetSymbolTableMozPromise(
const nsACString& aDebugPath, const nsACString& aBreakpadID);
struct ExitProfile {
nsCString mJSON;
uint64_t mBufferPositionAtGatherTime;
};
struct PendingProfile {
base::ProcessId childPid;
mozilla::ProportionValue progressProportion;
nsCString progressLocation;
mozilla::TimeStamp lastProgressRequest;
mozilla::TimeStamp lastProgressResponse;
mozilla::TimeStamp lastProgressChange;
explicit PendingProfile(base::ProcessId aChildPid) : childPid(aChildPid) {}
};
PendingProfile* GetPendingProfile(base::ProcessId aChildPid);
// Returns false if the request could not be sent.
bool SendProgressRequest(PendingProfile& aPendingProfile);
// If the log is active, call aJsonLogObjectUpdater(Json::Value&) on the log's
// root object.
template <typename JsonLogObjectUpdater>
void Log(JsonLogObjectUpdater&& aJsonLogObjectUpdater);
// If the log is active, call aJsonArrayAppender(Json::Value&) on a Json
// array that already contains a timestamp, and to which event-related
// elements may be appended.
template <typename JsonArrayAppender>
void LogEvent(JsonArrayAppender&& aJsonArrayAppender);
void LogEventLiteralString(const char* aEventString);
// These fields are all related to profile gathering.
mozilla::Vector<ExitProfile> mExitProfiles;
mozilla::Maybe<mozilla::MozPromiseHolder<GatheringPromise>> mPromiseHolder;
nsCOMPtr<nsIThread> mSymbolTableThread;
mozilla::Maybe<mozilla::FailureLatchSource> mFailureLatchSource;
mozilla::Maybe<SpliceableChunkedJSONWriter> mWriter;
mozilla::Maybe<mozilla::ProfileGenerationAdditionalInformation>
mProfileGenerationAdditionalInformation;
mozilla::Vector<PendingProfile> mPendingProfiles;
bool mGathering;
nsCOMPtr<nsITimer> mGatheringTimer;
// Supplemental log to the profiler's "profilingLog" (which has already been
// completed in JSON profiles that are gathered).
mozilla::UniquePtr<Json::Value> mGatheringLog;
};
#endif // nsProfiler_h
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