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/* -*- 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 mozilla_mscom_COMApartmentRegion_h
#define mozilla_mscom_COMApartmentRegion_h
#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"
#include <objbase.h>
namespace mozilla {
namespace mscom {
template<COINIT T>
class MOZ_NON_TEMPORARY_CLASS COMApartmentRegion
{
public:
COMApartmentRegion()
: mInitResult(::CoInitializeEx(nullptr, T))
{
// If this fires then we're probably mixing apartments on the same thread
MOZ_ASSERT(IsValid());
}
~COMApartmentRegion()
{
if (IsValid()) {
::CoUninitialize();
}
}
bool IsValidOutermost() const
{
return mInitResult == S_OK;
}
bool IsValid() const
{
return SUCCEEDED(mInitResult);
}
private:
COMApartmentRegion(const COMApartmentRegion&) = delete;
COMApartmentRegion& operator=(const COMApartmentRegion&) = delete;
COMApartmentRegion(COMApartmentRegion&&) = delete;
COMApartmentRegion& operator=(COMApartmentRegion&&) = delete;
HRESULT mInitResult;
};
typedef COMApartmentRegion<COINIT_APARTMENTTHREADED> STARegion;
typedef COMApartmentRegion<COINIT_MULTITHREADED> MTARegion;
} // namespace mscom
} // namespace mozilla
#endif // mozilla_mscom_COMApartmentRegion_h
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