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 struct 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   // IPC::Sender implementation.
  69   bool Send(IPC::Message* msg) override;
  70
  71   // IPC::Listener implementation.
  72   // The GpuProcessHost causes this to be called on the UI thread to
  73   // dispatch the incoming messages from the GPU process, which are
  74   // actually received on the IO thread.
  75   bool OnMessageReceived(const IPC::Message& message) override;
  76
  77   CONTENT_EXPORT void RelinquishGpuResources(const base::Closure& callback);
  78   CONTENT_EXPORT void SimulateRemoveAllContext();
  79   CONTENT_EXPORT void SimulateCrash();
  80   CONTENT_EXPORT void SimulateHang();
  81
  82  private:
  83   explicit GpuProcessHostUIShim(int host_id);
  84   ~GpuProcessHostUIShim() override;
  85
  86   // Message handlers.
  87   bool OnControlMessageReceived(const IPC::Message& message);
  88
  89   void OnLogMessage(int level, const std::string& header,
  90       const std::string& message);
  91
  92   void OnGraphicsInfoCollected(const gpu::GPUInfo& gpu_info);
  93
  94   void OnAcceleratedSurfaceInitialized(int32 surface_id, int32 route_id);
  95 #if defined(OS_MACOSX)
  96   void OnAcceleratedSurfaceBuffersSwapped(
  97       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params);
  98 #endif
  99   void OnVideoMemoryUsageStatsReceived(
 100       const GPUVideoMemoryUsageStats& video_memory_usage_stats);
 101   void OnResourcesRelinquished();
 102   void OnAddSubscription(int32 process_id, unsigned int target);
 103   void OnRemoveSubscription(int32 process_id, unsigned int target);
 104
 105   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
 106   int host_id_;
 107   base::Closure relinquish_callback_;
 108 };
 109
 110 }  // namespace content
 111
 112 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_