78 lines
1.8 KiB
C++
78 lines
1.8 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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#include "mozilla/mscom/EnsureMTA.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/StaticPtr.h"
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#include "nsThreadUtils.h"
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#include "private/pprthred.h"
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namespace {
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class EnterMTARunnable : public mozilla::Runnable
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{
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public:
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NS_IMETHOD Run() override
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{
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mozilla::DebugOnly<HRESULT> hr = ::CoInitializeEx(nullptr,
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COINIT_MULTITHREADED);
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MOZ_ASSERT(SUCCEEDED(hr));
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return NS_OK;
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}
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};
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class BackgroundMTAData
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{
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public:
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BackgroundMTAData()
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{
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nsCOMPtr<nsIRunnable> runnable = new EnterMTARunnable();
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nsresult rv = NS_NewNamedThread("COM MTA",
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getter_AddRefs(mThread), runnable);
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "NS_NewNamedThread failed");
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MOZ_ASSERT(NS_SUCCEEDED(rv));
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}
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~BackgroundMTAData()
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{
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if (mThread) {
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mThread->Dispatch(NS_NewRunnableFunction(&::CoUninitialize),
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NS_DISPATCH_NORMAL);
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mThread->Shutdown();
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}
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}
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nsCOMPtr<nsIThread> GetThread() const
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{
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return mThread;
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}
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private:
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nsCOMPtr<nsIThread> mThread;
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};
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} // anonymous namespace
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static mozilla::StaticAutoPtr<BackgroundMTAData> sMTAData;
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namespace mozilla {
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namespace mscom {
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/* static */ nsCOMPtr<nsIThread>
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EnsureMTA::GetMTAThread()
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{
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if (!sMTAData) {
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sMTAData = new BackgroundMTAData();
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ClearOnShutdown(&sMTAData, ShutdownPhase::ShutdownThreads);
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}
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return sMTAData->GetThread();
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}
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} // namespace mscom
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} // namespace mozilla
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