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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 <queue>
#include <string>
#include "base/basictypes.h"
#include "base/command_line.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_config.h"
#include "content/common/gpu/x_util.h"
#include "gpu/config/gpu_info.h"
#include "ui/gfx/native_widget_types.h"
namespace sandbox {
class TargetServices;
}
namespace content {
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:
typedef std::queue<IPC::Message*> DeferredMessages;
explicit GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
bool dead_on_arrival,
const gpu::GPUInfo& gpu_info,
const DeferredMessages& deferred_messages);
// For single-process mode.
explicit GpuChildThread(const std::string& channel_id);
~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;
private:
// Message handlers.
void OnInitialize();
void OnCollectGraphicsInfo();
void OnGetVideoMemoryUsageStats();
void OnSetVideoMemoryWindowCount(uint32 window_count);
void OnClean();
void OnCrash();
void OnHang();
void OnDisableWatchdog();
void OnGpuSwitched();
#if defined(USE_TCMALLOC)
void OnGetGpuTcmalloc();
#endif
// 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
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_;
DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
};
} // namespace content
#endif // CONTENT_GPU_GPU_CHILD_THREAD_H_