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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "VsyncIOThreadHolder.h"
#include "mozilla/SchedulerGroup.h"
namespace mozilla {
namespace gfx {
VsyncIOThreadHolder::VsyncIOThreadHolder() {
MOZ_COUNT_CTOR(VsyncIOThreadHolder);
}
VsyncIOThreadHolder::~VsyncIOThreadHolder() {
MOZ_COUNT_DTOR(VsyncIOThreadHolder);
if (!mThread) {
return;
}
if (NS_IsMainThread()) {
mThread->AsyncShutdown();
} else {
SchedulerGroup::Dispatch(
TaskCategory::Other,
NewRunnableMethod("nsIThread::AsyncShutdown", mThread,
&nsIThread::AsyncShutdown));
}
}
bool VsyncIOThreadHolder::Start() {
/* "VsyncIOThread" is used as the thread we send/recv IPC messages on. We
* don't use the "WindowsVsyncThread" directly because it isn't servicing an
* nsThread event loop which is needed for IPC to return results/notify us
* about shutdown etc.
*
* It would be better if we could notify the IPC IO thread directly to avoid
* the extra ping-ponging but that doesn't seem possible. */
nsresult rv = NS_NewNamedThread("VsyncIOThread", getter_AddRefs(mThread));
return NS_SUCCEEDED(rv);
}
RefPtr<nsIThread> VsyncIOThreadHolder::GetThread() const { return mThread; }
} // namespace gfx
} // namespace mozilla
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