62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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_COMApartmentRegion_h
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#define mozilla_mscom_COMApartmentRegion_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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template<COINIT T>
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class MOZ_NON_TEMPORARY_CLASS COMApartmentRegion
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{
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public:
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COMApartmentRegion()
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: mInitResult(::CoInitializeEx(nullptr, T))
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{
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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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~COMApartmentRegion()
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{
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if (IsValid()) {
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::CoUninitialize();
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}
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}
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bool IsValidOutermost() const
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{
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return mInitResult == S_OK;
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}
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bool IsValid() const
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{
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return SUCCEEDED(mInitResult);
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}
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private:
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COMApartmentRegion(const COMApartmentRegion&) = delete;
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COMApartmentRegion& operator=(const COMApartmentRegion&) = delete;
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COMApartmentRegion(COMApartmentRegion&&) = delete;
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COMApartmentRegion& operator=(COMApartmentRegion&&) = delete;
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HRESULT mInitResult;
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};
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typedef COMApartmentRegion<COINIT_APARTMENTTHREADED> STARegion;
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typedef COMApartmentRegion<COINIT_MULTITHREADED> MTARegion;
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} // namespace mscom
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} // namespace mozilla
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#endif // mozilla_mscom_COMApartmentRegion_h
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