зеркало из https://github.com/mozilla/gecko-dev.git
95 строки
2.6 KiB
C++
95 строки
2.6 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 http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_mscom_ApartmentRegion_h
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#define mozilla_mscom_ApartmentRegion_h
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#include <objbase.h>
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namespace mozilla {
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namespace mscom {
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class MOZ_NON_TEMPORARY_CLASS ApartmentRegion {
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public:
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/**
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* This constructor is to be used when we want to instantiate the object but
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* we do not yet know which type of apartment we want. Call Init() to
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* complete initialization.
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*/
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ApartmentRegion() : mInitResult(CO_E_NOTINITIALIZED) {}
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explicit ApartmentRegion(COINIT aAptType)
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: mInitResult(::CoInitializeEx(nullptr, aAptType)) {
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// If this fires then we're probably mixing apartments on the same thread
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MOZ_ASSERT(IsValid());
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}
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~ApartmentRegion() {
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if (IsValid()) {
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::CoUninitialize();
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}
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}
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explicit operator bool() const { return IsValid(); }
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bool IsValidOutermost() const { return mInitResult == S_OK; }
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bool IsValid() const { return SUCCEEDED(mInitResult); }
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bool Init(COINIT aAptType) {
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MOZ_ASSERT(mInitResult == CO_E_NOTINITIALIZED);
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mInitResult = ::CoInitializeEx(nullptr, aAptType);
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MOZ_ASSERT(IsValid());
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return IsValid();
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}
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HRESULT
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GetHResult() const { return mInitResult; }
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private:
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ApartmentRegion(const ApartmentRegion&) = delete;
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ApartmentRegion& operator=(const ApartmentRegion&) = delete;
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ApartmentRegion(ApartmentRegion&&) = delete;
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ApartmentRegion& operator=(ApartmentRegion&&) = delete;
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HRESULT mInitResult;
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};
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template <COINIT T>
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class MOZ_NON_TEMPORARY_CLASS ApartmentRegionT {
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public:
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ApartmentRegionT() : mAptRgn(T) {}
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~ApartmentRegionT() = default;
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explicit operator bool() const { return mAptRgn.IsValid(); }
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bool IsValidOutermost() const { return mAptRgn.IsValidOutermost(); }
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bool IsValid() const { return mAptRgn.IsValid(); }
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HRESULT GetHResult() const { return mAptRgn.GetHResult(); }
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private:
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ApartmentRegionT(const ApartmentRegionT&) = delete;
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ApartmentRegionT& operator=(const ApartmentRegionT&) = delete;
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ApartmentRegionT(ApartmentRegionT&&) = delete;
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ApartmentRegionT& operator=(ApartmentRegionT&&) = delete;
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ApartmentRegion mAptRgn;
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};
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typedef ApartmentRegionT<COINIT_APARTMENTTHREADED> STARegion;
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typedef ApartmentRegionT<COINIT_MULTITHREADED> MTARegion;
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} // namespace mscom
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} // namespace mozilla
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#endif // mozilla_mscom_ApartmentRegion_h
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