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_impl.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 GpuMemoryBufferFactory;
  31 class GpuWatchdogThread;
  32
  33 // The main thread of the GPU child process. There will only ever be one of
  34 // these per process. It does process initialization and shutdown. It forwards
  35 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
  36 // commands to the GPU.
  37 class GpuChildThread : public ChildThreadImpl {
  38  public:
  39   typedef std::queue<IPC::Message*> DeferredMessages;
  40
  41   GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
  42                  bool dead_on_arrival,
  43                  const gpu::GPUInfo& gpu_info,
  44                  const DeferredMessages& deferred_messages,
  45                  GpuMemoryBufferFactory* gpu_memory_buffer_factory);
  46
  47   GpuChildThread(const InProcessChildThreadParams& params,
  48                  GpuMemoryBufferFactory* gpu_memory_buffer_factory);
  49
  50   ~GpuChildThread() override;
  51
  52   static gfx::GpuMemoryBufferType GetGpuMemoryBufferFactoryType();
  53
  54   void Shutdown() override;
  55
  56   void Init(const base::Time& process_start_time);
  57   void StopWatchdog();
  58
  59   // ChildThread overrides.
  60   bool Send(IPC::Message* msg) override;
  61   bool OnControlMessageReceived(const IPC::Message& msg) override;
  62
  63  private:
  64   // Message handlers.
  65   void OnInitialize();
  66   void OnCollectGraphicsInfo();
  67   void OnGetVideoMemoryUsageStats();
  68   void OnSetVideoMemoryWindowCount(uint32 window_count);
  69
  70   void OnClean();
  71   void OnCrash();
  72   void OnHang();
  73   void OnDisableWatchdog();
  74   void OnGpuSwitched();
  75
  76 #if defined(USE_TCMALLOC)
  77   void OnGetGpuTcmalloc();
  78 #endif
  79
  80   // Set this flag to true if a fatal error occurred before we receive the
  81   // OnInitialize message, in which case we just declare ourselves DOA.
  82   bool dead_on_arrival_;
  83   base::Time process_start_time_;
  84   scoped_refptr<GpuWatchdogThread> watchdog_thread_;
  85
  86 #if defined(OS_WIN)
  87   // Windows specific client sandbox interface.
  88   sandbox::TargetServices* target_services_;
  89 #endif
  90
  91   scoped_ptr<GpuChannelManager> gpu_channel_manager_;
  92
  93   // Information about the GPU, such as device and vendor ID.
  94   gpu::GPUInfo gpu_info_;
  95
  96   // Error messages collected in gpu_main() before the thread is created.
  97   DeferredMessages deferred_messages_;
  98
  99   // Whether the GPU thread is running in the browser process.
 100   bool in_browser_process_;
 101
 102   // The GpuMemoryBufferFactory instance used to allocate GpuMemoryBuffers.
 103   GpuMemoryBufferFactory* const gpu_memory_buffer_factory_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
 106 };
 107
 108 }  // namespace content
 109
 110 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_