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 gpu {
  26 class SyncPointManager;
  27 }
  28
  29 namespace sandbox {
  30 class TargetServices;
  31 }
  32
  33 namespace content {
  34 class GpuMemoryBufferFactory;
  35 class GpuWatchdogThread;
  36
  37 // The main thread of the GPU child process. There will only ever be one of
  38 // these per process. It does process initialization and shutdown. It forwards
  39 // IPC messages to GpuChannelManager, which is responsible for issuing rendering
  40 // commands to the GPU.
  41 class GpuChildThread : public ChildThreadImpl {
  42  public:
  43   typedef std::queue<IPC::Message*> DeferredMessages;
  44
  45   GpuChildThread(GpuWatchdogThread* gpu_watchdog_thread,
  46                  bool dead_on_arrival,
  47                  const gpu::GPUInfo& gpu_info,
  48                  const DeferredMessages& deferred_messages,
  49                  GpuMemoryBufferFactory* gpu_memory_buffer_factory,
  50                  gpu::SyncPointManager* sync_point_manager);
  51
  52   GpuChildThread(const InProcessChildThreadParams& params,
  53                  GpuMemoryBufferFactory* gpu_memory_buffer_factory,
  54                  gpu::SyncPointManager* sync_point_manager);
  55
  56   ~GpuChildThread() override;
  57
  58   static gfx::GpuMemoryBufferType GetGpuMemoryBufferFactoryType();
  59
  60   void Shutdown() override;
  61
  62   void Init(const base::Time& process_start_time);
  63   void StopWatchdog();
  64
  65   // ChildThread overrides.
  66   bool Send(IPC::Message* msg) override;
  67   bool OnControlMessageReceived(const IPC::Message& msg) override;
  68
  69  private:
  70   // Message handlers.
  71   void OnInitialize();
  72   void OnCollectGraphicsInfo();
  73   void OnGetVideoMemoryUsageStats();
  74   void OnSetVideoMemoryWindowCount(uint32 window_count);
  75
  76   void OnClean();
  77   void OnCrash();
  78   void OnHang();
  79   void OnDisableWatchdog();
  80   void OnGpuSwitched();
  81
  82 #if defined(USE_TCMALLOC)
  83   void OnGetGpuTcmalloc();
  84 #endif
  85
  86   // Set this flag to true if a fatal error occurred before we receive the
  87   // OnInitialize message, in which case we just declare ourselves DOA.
  88   bool dead_on_arrival_;
  89   base::Time process_start_time_;
  90   scoped_refptr<GpuWatchdogThread> watchdog_thread_;
  91
  92 #if defined(OS_WIN)
  93   // Windows specific client sandbox interface.
  94   sandbox::TargetServices* target_services_;
  95 #endif
  96
  97   // Non-owning.
  98   gpu::SyncPointManager* sync_point_manager_;
  99
 100   scoped_ptr<GpuChannelManager> gpu_channel_manager_;
 101
 102   // Information about the GPU, such as device and vendor ID.
 103   gpu::GPUInfo gpu_info_;
 104
 105   // Error messages collected in gpu_main() before the thread is created.
 106   DeferredMessages deferred_messages_;
 107
 108   // Whether the GPU thread is running in the browser process.
 109   bool in_browser_process_;
 110
 111   // The GpuMemoryBufferFactory instance used to allocate GpuMemoryBuffers.
 112   GpuMemoryBufferFactory* const gpu_memory_buffer_factory_;
 113
 114   DISALLOW_COPY_AND_ASSIGN(GpuChildThread);
 115 };
 116
 117 }  // namespace content
 118
 119 #endif  // CONTENT_GPU_GPU_CHILD_THREAD_H_