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51 lines
1.5 KiB
C++
51 lines
1.5 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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#include "VsyncIOThreadHolder.h"
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#include "mozilla/SchedulerGroup.h"
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namespace mozilla {
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namespace gfx {
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VsyncIOThreadHolder::VsyncIOThreadHolder() {
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MOZ_COUNT_CTOR(VsyncIOThreadHolder);
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}
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VsyncIOThreadHolder::~VsyncIOThreadHolder() {
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MOZ_COUNT_DTOR(VsyncIOThreadHolder);
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if (!mThread) {
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return;
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}
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if (NS_IsMainThread()) {
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mThread->AsyncShutdown();
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} else {
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SchedulerGroup::Dispatch(
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TaskCategory::Other,
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NewRunnableMethod("nsIThread::AsyncShutdown", mThread,
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&nsIThread::AsyncShutdown));
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}
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}
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bool VsyncIOThreadHolder::Start() {
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/* "VsyncIOThread" is used as the thread we send/recv IPC messages on. We
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* don't use the "WindowsVsyncThread" directly because it isn't servicing an
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* nsThread event loop which is needed for IPC to return results/notify us
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* about shutdown etc.
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*
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* It would be better if we could notify the IPC IO thread directly to avoid
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* the extra ping-ponging but that doesn't seem possible. */
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nsresult rv = NS_NewNamedThread("VsyncIOThread", getter_AddRefs(mThread));
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return NS_SUCCEEDED(rv);
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}
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RefPtr<nsIThread> VsyncIOThreadHolder::GetThread() const { return mThread; }
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} // namespace gfx
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} // namespace mozilla
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