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 <queue>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/command_line.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/time/time.h"
  16 #include "build/build_config.h"
  17 #include "content/child/child_thread.h"
  18 #include "content/common/gpu/gpu_channel.h"
  19 #include "content/common/gpu/gpu_channel_manager.h"
  20 #include "content/common/gpu/gpu_config.h"
  21 #include "content/common/gpu/x_util.h"
  22 #include "gpu/config/gpu_info.h"
  23 #include "ui/gfx/native_widget_types.h"
  24
  25 namespace sandbox {
  26 class TargetServices;
  27 }
  28
  29 namespace content {
  30 class GpuWatchdogThread;
  31
  32 // The main thread of the GPU child process. There will only ever be one of
  33 // these per process. It does process initialization and shutdown. It forwards
  34 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
  35 // commands to the GPU.
  36 class GpuChildThread : public ChildThread {
  37  public:
  38   typedef std::queue<IPC::Message*> DeferredMessages;
  39
  40   explicit GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
  41                           bool dead_on_arrival,
  42                           const gpu::GPUInfo& gpu_info,
  43                           const DeferredMessages& deferred_messages);
  44
  45   // For single-process mode.
  46   explicit GpuChildThread(const std::string& channel_id);
  47
  48   virtual ~GpuChildThread();
  49
  50   virtual void Shutdown() OVERRIDE;
  51
  52   void Init(const base::Time& process_start_time);
  53   void StopWatchdog();
  54
  55   // ChildThread overrides.
  56   virtual bool Send(IPC::Message* msg) OVERRIDE;
  57   virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;
  58
  59  private:
  60   // Message handlers.
  61   void OnInitialize();
  62   void OnCollectGraphicsInfo();
  63   void OnGetVideoMemoryUsageStats();
  64   void OnSetVideoMemoryWindowCount(uint32 window_count);
  65
  66   void OnClean();
  67   void OnCrash();
  68   void OnHang();
  69   void OnDisableWatchdog();
  70
  71 #if defined(USE_TCMALLOC)
  72   void OnGetGpuTcmalloc();
  73 #endif
  74
  75   // Set this flag to true if a fatal error occurred before we receive the
  76   // OnInitialize message, in which case we just declare ourselves DOA.
  77   bool dead_on_arrival_;
  78   base::Time process_start_time_;
  79   scoped_refptr<GpuWatchdogThread> watchdog_thread_;
  80
  81 #if defined(OS_WIN)
  82   // Windows specific client sandbox interface.
  83   sandbox::TargetServices* target_services_;
  84 #endif
  85
  86   scoped_ptr<GpuChannelManager> gpu_channel_manager_;
  87
  88   // Information about the GPU, such as device and vendor ID.
  89   gpu::GPUInfo gpu_info_;
  90
  91   // Error messages collected in gpu_main() before the thread is created.
  92   DeferredMessages deferred_messages_;
  93
  94   // Whether the GPU thread is running in the browser process.
  95   bool in_browser_process_;
  96
  97   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
  98 };
  99
 100 }  // namespace content
 101
 102 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_