content/browser/gpu/gpu_process_host_ui_shim.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_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
   6 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
   7
   8 // This class lives on the UI thread and supports classes like the
   9 // BackingStoreProxy, which must live on the UI thread. The IO thread
  10 // portion of this class, the GpuProcessHost, is responsible for
  11 // shuttling messages between the browser and GPU processes.
  12
  13 #include <string>
  14
  15 #include "base/callback.h"
  16 #include "base/compiler_specific.h"
  17 #include "base/memory/linked_ptr.h"
  18 #include "base/memory/ref_counted.h"
  19 #include "base/threading/non_thread_safe.h"
  20 #include "content/common/content_export.h"
  21 #include "content/common/message_router.h"
  22 #include "content/public/common/gpu_memory_stats.h"
  23 #include "gpu/config/gpu_info.h"
  24 #include "ipc/ipc_listener.h"
  25 #include "ipc/ipc_sender.h"
  26
  27 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
  28
  29 namespace ui {
  30 struct LatencyInfo;
  31 }
  32
  33 namespace gfx {
  34 class Size;
  35 }
  36
  37 namespace IPC {
  38 class Message;
  39 }
  40
  41 namespace content {
  42 void RouteToGpuProcessHostUIShimTask(int host_id, const IPC::Message& msg);
  43
  44 class GpuProcessHostUIShim : public IPC::Listener,
  45                              public IPC::Sender,
  46                              public base::NonThreadSafe {
  47  public:
  48   // Create a GpuProcessHostUIShim with the given ID.  The object can be found
  49   // using FromID with the same id.
  50   static GpuProcessHostUIShim* Create(int host_id);
  51
  52   // Destroy the GpuProcessHostUIShim with the given host ID. This can only
  53   // be called on the UI thread. Only the GpuProcessHost should destroy the
  54   // UI shim.
  55   static void Destroy(int host_id, const std::string& message);
  56
  57   // Destroy all remaining GpuProcessHostUIShims.
  58   CONTENT_EXPORT static void DestroyAll();
  59
  60   CONTENT_EXPORT static GpuProcessHostUIShim* FromID(int host_id);
  61
  62   // Get a GpuProcessHostUIShim instance; it doesn't matter which one.
  63   // Return NULL if none has been created.
  64   CONTENT_EXPORT static GpuProcessHostUIShim* GetOneInstance();
  65
  66   // IPC::Sender implementation.
  67   bool Send(IPC::Message* msg) override;
  68
  69   // IPC::Listener implementation.
  70   // The GpuProcessHost causes this to be called on the UI thread to
  71   // dispatch the incoming messages from the GPU process, which are
  72   // actually received on the IO thread.
  73   bool OnMessageReceived(const IPC::Message& message) override;
  74
  75   CONTENT_EXPORT void RelinquishGpuResources(const base::Closure& callback);
  76   CONTENT_EXPORT void SimulateRemoveAllContext();
  77   CONTENT_EXPORT void SimulateCrash();
  78   CONTENT_EXPORT void SimulateHang();
  79
  80  private:
  81   explicit GpuProcessHostUIShim(int host_id);
  82   ~GpuProcessHostUIShim() override;
  83
  84   // Message handlers.
  85   bool OnControlMessageReceived(const IPC::Message& message);
  86
  87   void OnLogMessage(int level, const std::string& header,
  88       const std::string& message);
  89
  90   void OnGraphicsInfoCollected(const gpu::GPUInfo& gpu_info);
  91
  92   void OnAcceleratedSurfaceInitialized(int32 surface_id, int32 route_id);
  93   void OnAcceleratedSurfaceBuffersSwapped(
  94       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params);
  95   void OnVideoMemoryUsageStatsReceived(
  96       const GPUVideoMemoryUsageStats& video_memory_usage_stats);
  97   void OnResourcesRelinquished();
  98   void OnAddSubscription(int32 process_id, unsigned int target);
  99   void OnRemoveSubscription(int32 process_id, unsigned int target);
 100
 101   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
 102   int host_id_;
 103   base::Closure relinquish_callback_;
 104 };
 105
 106 }  // namespace content
 107
 108 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_