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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_GPU_GPU_CHILD_THREAD_H_
#define CONTENT_GPU_GPU_CHILD_THREAD_H_
#include <stdint.h>
#include <queue>
#include <string>
#include "base/command_line.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "content/child/child_thread_impl.h"
#include "content/common/gpu/gpu_channel.h"
#include "content/common/gpu/gpu_channel_manager.h"
#include "content/common/gpu/gpu_channel_manager_delegate.h"
#include "content/common/gpu/gpu_config.h"
#include "content/common/gpu/x_util.h"
#include "content/common/process_control.mojom.h"
#include "gpu/config/gpu_info.h"
#include "mojo/public/cpp/bindings/binding_set.h"
#include "mojo/public/cpp/bindings/interface_request.h"
#include "ui/gfx/native_widget_types.h"
namespace gpu {
class SyncPointManager;
}
namespace sandbox {
class TargetServices;
}
namespace content {
class GpuMemoryBufferFactory;
class GpuProcessControlImpl;
class GpuWatchdogThread;
// The main thread of the GPU child process. There will only ever be one of
// these per process. It does process initialization and shutdown. It forwards
// IPC messages to GpuChannelManager, which is responsible for issuing rendering
// commands to the GPU.
class GpuChildThread : public ChildThreadImpl,
public GpuChannelManagerDelegate {
public:
typedef std::queue<IPC::Message*> DeferredMessages;
GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
bool dead_on_arrival,
const gpu::GPUInfo& gpu_info,
const DeferredMessages& deferred_messages,
GpuMemoryBufferFactory* gpu_memory_buffer_factory,
gpu::SyncPointManager* sync_point_manager);
GpuChildThread(const InProcessChildThreadParams& params,
GpuMemoryBufferFactory* gpu_memory_buffer_factory,
gpu::SyncPointManager* sync_point_manager);
~GpuChildThread() override;
void Shutdown() override;
void Init(const base::Time& process_start_time);
void StopWatchdog();
// ChildThread overrides.
bool Send(IPC::Message* msg) override;
bool OnControlMessageReceived(const IPC::Message& msg) override;
bool OnMessageReceived(const IPC::Message& msg) override;
private:
// GpuChannelManagerDelegate implementation.
void AddSubscription(int32_t client_id, unsigned int target) override;
void ChannelEstablished(const IPC::ChannelHandle& channel_handle) override;
void DidCreateOffscreenContext(const GURL& active_url) override;
void DidDestroyChannel(int client_id) override;
void DidDestroyOffscreenContext(const GURL& active_url) override;
void DidLoseContext(bool offscreen,
gpu::error::ContextLostReason reason,
const GURL& active_url) override;
void GpuMemoryUmaStats(const GPUMemoryUmaStats& params) override;
void RemoveSubscription(int32_t client_id, unsigned int target) override;
#if defined(OS_MACOSX)
void SendAcceleratedSurfaceBuffersSwapped(
const AcceleratedSurfaceBuffersSwappedParams& params) override;
#endif
#if defined(OS_WIN)
void SendAcceleratedSurfaceCreatedChildWindow(
const gfx::PluginWindowHandle& parent_window,
const gfx::PluginWindowHandle& child_window) override;
#endif
void StoreShaderToDisk(int32_t client_id,
const std::string& key,
const std::string& shader) override;
// Message handlers.
void OnInitialize();
void OnFinalize();
void OnCollectGraphicsInfo();
void OnGetVideoMemoryUsageStats();
void OnSetVideoMemoryWindowCount(uint32_t window_count);
void OnClean();
void OnCrash();
void OnHang();
void OnDisableWatchdog();
void OnGpuSwitched();
#if defined(OS_MACOSX)
void OnBufferPresented(const BufferPresentedParams& params);
#endif
void OnEstablishChannel(const EstablishChannelParams& params);
void OnCloseChannel(const IPC::ChannelHandle& channel_handle);
void OnLoadedShader(const std::string& shader);
void OnDestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
int client_id,
const gpu::SyncToken& sync_token);
void OnUpdateValueState(int client_id,
unsigned int target,
const gpu::ValueState& state);
#if defined(OS_ANDROID)
void OnWakeUpGpu();
#endif
void OnLoseAllContexts();
void BindProcessControlRequest(
mojo::InterfaceRequest<ProcessControl> request);
// Set this flag to true if a fatal error occurred before we receive the
// OnInitialize message, in which case we just declare ourselves DOA.
bool dead_on_arrival_;
base::Time process_start_time_;
scoped_refptr<GpuWatchdogThread> watchdog_thread_;
#if defined(OS_WIN)
// Windows specific client sandbox interface.
sandbox::TargetServices* target_services_;
#endif
// Non-owning.
gpu::SyncPointManager* sync_point_manager_;
scoped_ptr<GpuChannelManager> gpu_channel_manager_;
// Information about the GPU, such as device and vendor ID.
gpu::GPUInfo gpu_info_;
// Error messages collected in gpu_main() before the thread is created.
DeferredMessages deferred_messages_;
// Whether the GPU thread is running in the browser process.
bool in_browser_process_;
// The GpuMemoryBufferFactory instance used to allocate GpuMemoryBuffers.
GpuMemoryBufferFactory* const gpu_memory_buffer_factory_;
// Process control for Mojo application hosting.
scoped_ptr<GpuProcessControlImpl> process_control_;
// Bindings to the ProcessControl impl.
mojo::BindingSet<ProcessControl> process_control_bindings_;
DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
};
} // namespace content
#endif // CONTENT_GPU_GPU_CHILD_THREAD_H_
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