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 #if defined(OS_MACOSX)
  28 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
  29 #endif
  30
  31 namespace ui {
  32 class LatencyInfo;
  33 }
  34
  35 namespace gfx {
  36 class Size;
  37 }
  38
  39 namespace IPC {
  40 class Message;
  41 }
  42
  43 namespace content {
  44 void RouteToGpuProcessHostUIShimTask(int host_id, const IPC::Message& msg);
  45
  46 class GpuProcessHostUIShim : public IPC::Listener,
  47                              public IPC::Sender,
  48                              public base::NonThreadSafe {
  49  public:
  50   // Create a GpuProcessHostUIShim with the given ID.  The object can be found
  51   // using FromID with the same id.
  52   static GpuProcessHostUIShim* Create(int host_id);
  53
  54   // Destroy the GpuProcessHostUIShim with the given host ID. This can only
  55   // be called on the UI thread. Only the GpuProcessHost should destroy the
  56   // UI shim.
  57   static void Destroy(int host_id, const std::string& message);
  58
  59   // Destroy all remaining GpuProcessHostUIShims.
  60   CONTENT_EXPORT static void DestroyAll();
  61
  62   CONTENT_EXPORT static GpuProcessHostUIShim* FromID(int host_id);
  63
  64   // Get a GpuProcessHostUIShim instance; it doesn't matter which one.
  65   // Return NULL if none has been created.
  66   CONTENT_EXPORT static GpuProcessHostUIShim* GetOneInstance();
  67
  68   // Stops the GPU process.
  69   void StopGpuProcess(const base::Closure& callback);
  70
  71   // IPC::Sender implementation.
  72   bool Send(IPC::Message* msg) override;
  73
  74   // IPC::Listener implementation.
  75   // The GpuProcessHost causes this to be called on the UI thread to
  76   // dispatch the incoming messages from the GPU process, which are
  77   // actually received on the IO thread.
  78   bool OnMessageReceived(const IPC::Message& message) override;
  79
  80   CONTENT_EXPORT void SimulateRemoveAllContext();
  81   CONTENT_EXPORT void SimulateCrash();
  82   CONTENT_EXPORT void SimulateHang();
  83
  84  private:
  85   explicit GpuProcessHostUIShim(int host_id);
  86   ~GpuProcessHostUIShim() override;
  87
  88   // Message handlers.
  89   bool OnControlMessageReceived(const IPC::Message& message);
  90
  91   void OnLogMessage(int level, const std::string& header,
  92       const std::string& message);
  93
  94   void OnGraphicsInfoCollected(const gpu::GPUInfo& gpu_info);
  95
  96   void OnAcceleratedSurfaceInitialized(int32 surface_id, int32 route_id);
  97 #if defined(OS_MACOSX)
  98   void OnAcceleratedSurfaceBuffersSwapped(
  99       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params);
 100 #endif
 101   void OnVideoMemoryUsageStatsReceived(
 102       const GPUVideoMemoryUsageStats& video_memory_usage_stats);
 103   void OnAddSubscription(int32 process_id, unsigned int target);
 104   void OnRemoveSubscription(int32 process_id, unsigned int target);
 105
 106   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
 107   int host_id_;
 108   base::Closure close_callback_;
 109 };
 110
 111 }  // namespace content
 112
 113 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_