content/gpu/gpu_child_thread.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_GPU_GPU_CHILD_THREAD_H_
   6 #define CONTENT_GPU_GPU_CHILD_THREAD_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/command_line.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/time.h"
  15 #include "build/build_config.h"
  16 #include "content/common/child_thread.h"
  17 #include "content/common/gpu/gpu_channel.h"
  18 #include "content/common/gpu/gpu_channel_manager.h"
  19 #include "content/common/gpu/gpu_config.h"
  20 #include "content/common/gpu/x_util.h"
  21 #include "content/public/common/gpu_info.h"
  22 #include "ui/gfx/native_widget_types.h"
  23
  24 namespace sandbox {
  25 class TargetServices;
  26 }
  27
  28 namespace content {
  29 class GpuWatchdogThread;
  30
  31 // The main thread of the GPU child process. There will only ever be one of
  32 // these per process. It does process initialization and shutdown. It forwards
  33 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
  34 // commands to the GPU.
  35 class GpuChildThread : public ChildThread {
  36  public:
  37   explicit GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
  38                           bool dead_on_arrival,
  39                           const GPUInfo& gpu_info);
  40
  41   // For single-process mode.
  42   explicit GpuChildThread(const std::string& channel_id);
  43
  44   virtual ~GpuChildThread();
  45
  46   void Init(const base::Time& process_start_time);
  47   void StopWatchdog();
  48
  49   // ChildThread overrides.
  50   virtual bool Send(IPC::Message* msg) OVERRIDE;
  51   virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;
  52
  53  private:
  54   // Message handlers.
  55   void OnInitialize();
  56   void OnCollectGraphicsInfo();
  57   void OnGetVideoMemoryUsageStats();
  58   void OnSetVideoMemoryWindowCount(uint32 window_count);
  59
  60   void OnClean();
  61   void OnCrash();
  62   void OnHang();
  63   void OnDisableWatchdog();
  64
  65 #if defined(USE_TCMALLOC)
  66   void OnGetGpuTcmalloc();
  67 #endif
  68
  69   // Set this flag to true if a fatal error occurred before we receive the
  70   // OnInitialize message, in which case we just declare ourselves DOA.
  71   bool dead_on_arrival_;
  72   base::Time process_start_time_;
  73   scoped_refptr<GpuWatchdogThread> watchdog_thread_;
  74
  75 #if defined(OS_WIN)
  76   // Windows specific client sandbox interface.
  77   sandbox::TargetServices* target_services_;
  78 #endif
  79
  80   scoped_ptr<GpuChannelManager> gpu_channel_manager_;
  81
  82   // Information about the GPU, such as device and vendor ID.
  83   GPUInfo gpu_info_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
  86 };
  87
  88 }  // namespace content
  89
  90 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_