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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "VsyncBridgeChild.h"
#include "VsyncIOThreadHolder.h"
#include "mozilla/dom/ContentChild.h"
#include "GPUProcessManager.h"
namespace mozilla {
namespace gfx {
VsyncBridgeChild::VsyncBridgeChild(RefPtr<VsyncIOThreadHolder> aThread, const uint64_t& aProcessToken)
: mThread(aThread),
mLoop(nullptr),
mProcessToken(aProcessToken)
{
}
VsyncBridgeChild::~VsyncBridgeChild()
{
}
/* static */ RefPtr<VsyncBridgeChild>
VsyncBridgeChild::Create(RefPtr<VsyncIOThreadHolder> aThread,
const uint64_t& aProcessToken,
Endpoint<PVsyncBridgeChild>&& aEndpoint)
{
RefPtr<VsyncBridgeChild> child = new VsyncBridgeChild(aThread, aProcessToken);
RefPtr<nsIRunnable> task = NewRunnableMethod<Endpoint<PVsyncBridgeChild>&&>(
child, &VsyncBridgeChild::Open, Move(aEndpoint));
aThread->GetThread()->Dispatch(task.forget(), nsIThread::DISPATCH_NORMAL);
return child;
}
void
VsyncBridgeChild::Open(Endpoint<PVsyncBridgeChild>&& aEndpoint)
{
if (!aEndpoint.Bind(this)) {
// The GPU Process Manager might be gone if we receive ActorDestroy very
// late in shutdown.
if (GPUProcessManager* gpm = GPUProcessManager::Get())
gpm->NotifyRemoteActorDestroyed(mProcessToken);
return;
}
mLoop = MessageLoop::current();
// Last reference is freed in DeallocPVsyncBridgeChild.
AddRef();
}
class NotifyVsyncTask : public Runnable
{
public:
NotifyVsyncTask(RefPtr<VsyncBridgeChild> aVsyncBridge,
TimeStamp aTimeStamp,
const uint64_t& aLayersId)
: mVsyncBridge(aVsyncBridge),
mTimeStamp(aTimeStamp),
mLayersId(aLayersId)
{}
NS_IMETHOD Run() override {
mVsyncBridge->NotifyVsyncImpl(mTimeStamp, mLayersId);
return NS_OK;
}
private:
RefPtr<VsyncBridgeChild> mVsyncBridge;
TimeStamp mTimeStamp;
uint64_t mLayersId;
};
bool
VsyncBridgeChild::IsOnVsyncIOThread() const
{
return MessageLoop::current() == mLoop;
}
void
VsyncBridgeChild::NotifyVsync(TimeStamp aTimeStamp, const uint64_t& aLayersId)
{
// This should be on the Vsync thread (not the Vsync I/O thread).
MOZ_ASSERT(!IsOnVsyncIOThread());
RefPtr<NotifyVsyncTask> task = new NotifyVsyncTask(this, aTimeStamp, aLayersId);
mLoop->PostTask(task.forget());
}
void
VsyncBridgeChild::NotifyVsyncImpl(TimeStamp aTimeStamp, const uint64_t& aLayersId)
{
// This should be on the Vsync I/O thread.
MOZ_ASSERT(IsOnVsyncIOThread());
if (!mProcessToken) {
return;
}
SendNotifyVsync(aTimeStamp, aLayersId);
}
void
VsyncBridgeChild::Close()
{
if (!IsOnVsyncIOThread()) {
mLoop->PostTask(NewRunnableMethod(this, &VsyncBridgeChild::Close));
return;
}
// We clear mProcessToken when the channel is closed.
if (!mProcessToken) {
return;
}
// Clear the process token so we don't notify the GPUProcessManager. It already
// knows we're closed since it manually called Close, and in fact the GPM could
// have already been destroyed during shutdown.
mProcessToken = 0;
// Close the underlying IPC channel.
PVsyncBridgeChild::Close();
}
void
VsyncBridgeChild::ActorDestroy(ActorDestroyReason aWhy)
{
if (mProcessToken) {
GPUProcessManager::Get()->NotifyRemoteActorDestroyed(mProcessToken);
mProcessToken = 0;
}
}
void
VsyncBridgeChild::DeallocPVsyncBridgeChild()
{
Release();
}
void
VsyncBridgeChild::ProcessingError(Result aCode, const char* aReason)
{
MOZ_RELEASE_ASSERT(aCode == MsgDropped, "Processing error in VsyncBridgeChild");
}
void
VsyncBridgeChild::HandleFatalError(const char* aName, const char* aMsg) const
{
dom::ContentChild::FatalErrorIfNotUsingGPUProcess(aName, aMsg, OtherPid());
}
} // namespace gfx
} // namespace mozilla
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