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In order to help unify DLL timings across machines with different performance characteristics, this change collects the load duration of xul.dll. Because xul.dll is always loaded, it can serve as a control value for DLL load times. Differential Revision: https://phabricator.services.mozilla.com/D16012 --HG-- extra : moz-landing-system : lando
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 https://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_WinDllServices_h
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#define mozilla_WinDllServices_h
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#include "mozilla/CombinedStacks.h"
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#include "mozilla/glue/WindowsDllServices.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/ModuleEvaluator_windows.h"
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#include "mozilla/mozalloc.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/Vector.h"
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namespace mozilla {
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// Holds the data that telemetry requests, and will be later converted to the
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// telemetry payload.
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class UntrustedModuleLoadTelemetryData {
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public:
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UntrustedModuleLoadTelemetryData() = default;
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// Moves allowed, no copies.
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UntrustedModuleLoadTelemetryData(UntrustedModuleLoadTelemetryData&&) =
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default;
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UntrustedModuleLoadTelemetryData(
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const UntrustedModuleLoadTelemetryData& aOther) = delete;
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Vector<ModuleLoadEvent, 0, InfallibleAllocPolicy> mEvents;
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Telemetry::CombinedStacks mStacks;
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int mErrorModules = 0;
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Maybe<double> mXULLoadDurationMS;
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};
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class UntrustedModulesManager;
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class DllServices : public mozilla::glue::DllServices {
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public:
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static DllServices* Get();
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static const char* kTopicDllLoadedMainThread;
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static const char* kTopicDllLoadedNonMainThread;
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/**
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* Processes pending untrusted module evaluation / examination, and returns
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* a copy of the total data we've gathered for use by the untrusted modules
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* telemetry ping.
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*
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* This function should be called on a background thread, and can take a
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* while.
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*
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* @param aOut [out] Receives a copy of internally-stored data.
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* @return true upon success.
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*/
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bool GetUntrustedModuleTelemetryData(UntrustedModuleLoadTelemetryData& aOut);
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private:
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DllServices();
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~DllServices() = default;
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void NotifyDllLoad(const bool aIsMainThread,
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const nsString& aDllName) override;
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void NotifyUntrustedModuleLoads(
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const Vector<glue::ModuleLoadEvent, 0, InfallibleAllocPolicy>& aEvents)
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override;
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UniquePtr<UntrustedModulesManager> mUntrustedModulesManager;
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};
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} // namespace mozilla
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#endif // mozilla_WinDllServices_h
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