gecko-dev/gfx/ipc/GPUProcessManager.h

244 строки
8.0 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=99: */
/* 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 _include_mozilla_gfx_ipc_GPUProcessManager_h_
#define _include_mozilla_gfx_ipc_GPUProcessManager_h_
#include "base/basictypes.h"
#include "base/process.h"
#include "Units.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/ipc/IdType.h"
#include "mozilla/gfx/GPUProcessHost.h"
#include "mozilla/gfx/Point.h"
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/ipc/TaskFactory.h"
#include "mozilla/ipc/Transport.h"
#include "nsIObserverService.h"
#include "nsThreadUtils.h"
class nsBaseWidget;
namespace mozilla {
namespace layers {
class IAPZCTreeManager;
class CompositorSession;
class CompositorUpdateObserver;
class PCompositorBridgeChild;
class PImageBridgeChild;
class RemoteCompositorSession;
} // namespace layers
namespace widget {
class CompositorWidget;
} // namespace widget
namespace dom {
class ContentParent;
class TabParent;
class PVideoDecoderManagerChild;
} // namespace dom
namespace ipc {
class GeckoChildProcessHost;
} // namespace ipc
namespace gfx {
class GPUChild;
class GPUProcessListener;
class PVRManagerChild;
class VsyncBridgeChild;
class VsyncIOThreadHolder;
// The GPUProcessManager is a singleton responsible for creating GPU-bound
// objects that may live in another process. Currently, it provides access
// to the compositor via CompositorBridgeParent.
class GPUProcessManager final : public GPUProcessHost::Listener
{
friend class layers::RemoteCompositorSession;
typedef layers::CompositorSession CompositorSession;
typedef layers::CompositorUpdateObserver CompositorUpdateObserver;
typedef layers::IAPZCTreeManager IAPZCTreeManager;
typedef layers::LayerManager LayerManager;
typedef layers::PCompositorBridgeChild PCompositorBridgeChild;
typedef layers::PImageBridgeChild PImageBridgeChild;
typedef layers::RemoteCompositorSession RemoteCompositorSession;
public:
static void Initialize();
static void Shutdown();
static GPUProcessManager* Get();
~GPUProcessManager();
// If not using a GPU process, launch a new GPU process asynchronously.
void LaunchGPUProcess();
// Ensure that GPU-bound methods can be used. If no GPU process is being
// used, or one is launched and ready, this function returns immediately.
// Otherwise it blocks until the GPU process has finished launching.
void EnsureGPUReady();
RefPtr<CompositorSession> CreateTopLevelCompositor(
nsBaseWidget* aWidget,
LayerManager* aLayerManager,
CSSToLayoutDeviceScale aScale,
bool aUseAPZ,
bool aUseExternalSurfaceSize,
const gfx::IntSize& aSurfaceSize);
bool CreateContentBridges(
base::ProcessId aOtherProcess,
ipc::Endpoint<PCompositorBridgeChild>* aOutCompositor,
ipc::Endpoint<PImageBridgeChild>* aOutImageBridge,
ipc::Endpoint<PVRManagerChild>* aOutVRBridge,
ipc::Endpoint<dom::PVideoDecoderManagerChild>* aOutVideoManager);
// This returns a reference to the APZCTreeManager to which
// pan/zoom-related events can be sent.
already_AddRefed<IAPZCTreeManager> GetAPZCTreeManagerForLayers(uint64_t aLayersId);
// Maps the layer tree and process together so that aOwningPID is allowed
// to access aLayersId across process.
void MapLayerTreeId(uint64_t aLayersId, base::ProcessId aOwningId);
// Release compositor-thread resources referred to by |aID|.
//
// Must run on the content main thread.
void UnmapLayerTreeId(uint64_t aLayersId, base::ProcessId aOwningId);
// Checks to see if aLayersId and aRequestingPID have been mapped by MapLayerTreeId
bool IsLayerTreeIdMapped(uint64_t aLayersId, base::ProcessId aRequestingId);
// Allocate an ID that can be used to refer to a layer tree and
// associated resources that live only on the compositor thread.
//
// Must run on the content main thread.
uint64_t AllocateLayerTreeId();
void OnProcessLaunchComplete(GPUProcessHost* aHost) override;
void OnProcessUnexpectedShutdown(GPUProcessHost* aHost) override;
void OnProcessDeviceReset(GPUProcessHost* aHost) override;
// Notify the GPUProcessManager that a top-level PGPU protocol has been
// terminated. This may be called from any thread.
void NotifyRemoteActorDestroyed(const uint64_t& aProcessToken);
void AddListener(GPUProcessListener* aListener);
void RemoveListener(GPUProcessListener* aListener);
// Send a message to the GPU process observer service to broadcast. Returns
// true if the message was sent, false if not.
bool NotifyGpuObservers(const char* aTopic);
// Used for tests and diagnostics
void KillProcess();
// Returns -1 if there is no GPU process, or the platform pid for it.
base::ProcessId GPUProcessPid();
// Returns access to the PGPU protocol if a GPU process is present.
GPUChild* GetGPUChild() {
return mGPUChild;
}
// Returns whether or not a GPU process was ever launched.
bool AttemptedGPUProcess() const {
return mNumProcessAttempts > 0;
}
// Returns the next compositor reset sequence number, a monotonic counter
// for when the compositing device resets. Since content processes are
// notified of resets through each individual tab, this allows content to
// only re-acquire devices once for each reset.
uint64_t GetNextDeviceResetSequenceNumber() {
return ++mNextResetSequenceNo;
}
private:
// Called from our xpcom-shutdown observer.
void OnXPCOMShutdown();
bool CreateContentCompositorBridge(base::ProcessId aOtherProcess,
ipc::Endpoint<PCompositorBridgeChild>* aOutEndpoint);
bool CreateContentImageBridge(base::ProcessId aOtherProcess,
ipc::Endpoint<PImageBridgeChild>* aOutEndpoint);
bool CreateContentVRManager(base::ProcessId aOtherProcess,
ipc::Endpoint<PVRManagerChild>* aOutEndpoint);
void CreateContentVideoDecoderManager(base::ProcessId aOtherProcess,
ipc::Endpoint<dom::PVideoDecoderManagerChild>* aOutEndPoint);
// Called from RemoteCompositorSession. We track remote sessions so we can
// notify their owning widgets that the session must be restarted.
void RegisterSession(RemoteCompositorSession* aSession);
void UnregisterSession(RemoteCompositorSession* aSession);
private:
GPUProcessManager();
// Permanently disable the GPU process and record a message why.
void DisableGPUProcess(const char* aMessage);
// Shutdown the GPU process.
void CleanShutdown();
void DestroyProcess();
void HandleProcessLost();
void EnsureVsyncIOThread();
void ShutdownVsyncIOThread();
void EnsureImageBridgeChild();
void EnsureVRManager();
RefPtr<CompositorSession> CreateRemoteSession(
nsBaseWidget* aWidget,
LayerManager* aLayerManager,
const uint64_t& aRootLayerTreeId,
CSSToLayoutDeviceScale aScale,
bool aUseAPZ,
bool aUseExternalSurfaceSize,
const gfx::IntSize& aSurfaceSize);
DISALLOW_COPY_AND_ASSIGN(GPUProcessManager);
class Observer final : public nsIObserver {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
explicit Observer(GPUProcessManager* aManager);
protected:
~Observer() {}
GPUProcessManager* mManager;
};
friend class Observer;
private:
RefPtr<Observer> mObserver;
ipc::TaskFactory<GPUProcessManager> mTaskFactory;
RefPtr<VsyncIOThreadHolder> mVsyncIOThread;
uint64_t mNextLayerTreeId;
uint64_t mNextResetSequenceNo;
uint32_t mNumProcessAttempts;
nsTArray<RefPtr<RemoteCompositorSession>> mRemoteSessions;
nsTArray<GPUProcessListener*> mListeners;
uint32_t mDeviceResetCount;
TimeStamp mDeviceResetLastTime;
// Fields that are associated with the current GPU process.
GPUProcessHost* mProcess;
MOZ_INIT_OUTSIDE_CTOR uint64_t mProcessToken;
GPUChild* mGPUChild;
RefPtr<VsyncBridgeChild> mVsyncBridge;
};
} // namespace gfx
} // namespace mozilla
#endif // _include_mozilla_gfx_ipc_GPUProcessManager_h_