content/common/gpu/gpu_channel_manager.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_COMMON_GPU_GPU_CHANNEL_MANAGER_H_
   6 #define CONTENT_COMMON_GPU_GPU_CHANNEL_MANAGER_H_
   7
   8 #include <deque>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/containers/hash_tables.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/message_loop/message_loop_proxy.h"
  17 #include "build/build_config.h"
  18 #include "content/common/gpu/gpu_memory_manager.h"
  19 #include "ipc/ipc_listener.h"
  20 #include "ipc/ipc_sender.h"
  21 #include "ui/gfx/native_widget_types.h"
  22 #include "ui/gl/gl_surface.h"
  23
  24 namespace base {
  25 class WaitableEvent;
  26 }
  27
  28 namespace gfx {
  29 class GLShareGroup;
  30 }
  31
  32 namespace gpu {
  33 namespace gles2 {
  34 class MailboxManager;
  35 class ProgramCache;
  36 }
  37 }
  38
  39 namespace IPC {
  40 struct ChannelHandle;
  41 }
  42
  43 struct GPUCreateCommandBufferConfig;
  44
  45 namespace content {
  46 class ChildThread;
  47 class GpuChannel;
  48 class GpuWatchdog;
  49 class SyncPointManager;
  50
  51 // A GpuChannelManager is a thread responsible for issuing rendering commands
  52 // managing the lifetimes of GPU channels and forwarding IPC requests from the
  53 // browser process to them based on the corresponding renderer ID.
  54 //
  55 // A GpuChannelManager can also be hosted in the browser process in single
  56 // process or in-process GPU modes. In this case there is no corresponding
  57 // GpuChildThread and this is the reason the GpuChildThread is referenced via
  58 // a pointer to IPC::Sender, which can be implemented by other hosts to send
  59 // IPC messages to the browser process IO thread on the GpuChannelManager's
  60 // behalf.
  61 class GpuChannelManager : public IPC::Listener,
  62                           public IPC::Sender {
  63  public:
  64   GpuChannelManager(ChildThread* gpu_child_thread,
  65                     GpuWatchdog* watchdog,
  66                     base::MessageLoopProxy* io_message_loop,
  67                     base::WaitableEvent* shutdown_event);
  68   virtual ~GpuChannelManager();
  69
  70   // Remove the channel for a particular renderer.
  71   void RemoveChannel(int client_id);
  72
  73   // Listener overrides.
  74   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
  75
  76   // Sender overrides.
  77   virtual bool Send(IPC::Message* msg) OVERRIDE;
  78
  79   bool HandleMessagesScheduled();
  80   uint64 MessagesProcessed();
  81
  82   void LoseAllContexts();
  83
  84   base::WeakPtrFactory<GpuChannelManager> weak_factory_;
  85
  86   int GenerateRouteID();
  87   void AddRoute(int32 routing_id, IPC::Listener* listener);
  88   void RemoveRoute(int32 routing_id);
  89
  90   gpu::gles2::ProgramCache* program_cache();
  91
  92   GpuMemoryManager* gpu_memory_manager() { return &gpu_memory_manager_; }
  93
  94   GpuChannel* LookupChannel(int32 client_id);
  95
  96   SyncPointManager* sync_point_manager() { return sync_point_manager_.get(); }
  97
  98   gfx::GLSurface* GetDefaultOffscreenSurface();
  99
 100  private:
 101   struct ImageOperation {
 102     ImageOperation(int32 sync_point, base::Closure callback);
 103     ~ImageOperation();
 104
 105     int32 sync_point;
 106     base::Closure callback;
 107   };
 108   typedef base::hash_map<int, scoped_refptr<GpuChannel> > GpuChannelMap;
 109   typedef std::deque<ImageOperation*> ImageOperationQueue;
 110
 111   // Message handlers.
 112   void OnEstablishChannel(int client_id, bool share_context);
 113   void OnCloseChannel(const IPC::ChannelHandle& channel_handle);
 114   void OnVisibilityChanged(
 115       int32 render_view_id, int32 client_id, bool visible);
 116   void OnCreateViewCommandBuffer(
 117       const gfx::GLSurfaceHandle& window,
 118       int32 render_view_id,
 119       int32 client_id,
 120       const GPUCreateCommandBufferConfig& init_params);
 121   void CreateImage(
 122       gfx::PluginWindowHandle window, int32 client_id, int32 image_id);
 123   void OnCreateImage(
 124       gfx::PluginWindowHandle window, int32 client_id, int32 image_id);
 125   void DeleteImage(int32 client_id, int32 image_id);
 126   void OnDeleteImage(int32 client_id, int32 image_id, int32 sync_point);
 127   void OnDeleteImageSyncPointRetired(ImageOperation*);
 128   void OnLoadedShader(std::string shader);
 129
 130   void OnLoseAllContexts();
 131
 132   scoped_refptr<base::MessageLoopProxy> io_message_loop_;
 133   base::WaitableEvent* shutdown_event_;
 134
 135   // Used to send and receive IPC messages from the browser process.
 136   ChildThread* gpu_child_thread_;
 137
 138   // These objects manage channels to individual renderer processes there is
 139   // one channel for each renderer process that has connected to this GPU
 140   // process.
 141   GpuChannelMap gpu_channels_;
 142   scoped_refptr<gfx::GLShareGroup> share_group_;
 143   scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
 144   GpuMemoryManager gpu_memory_manager_;
 145   GpuWatchdog* watchdog_;
 146   scoped_refptr<SyncPointManager> sync_point_manager_;
 147   scoped_ptr<gpu::gles2::ProgramCache> program_cache_;
 148   scoped_refptr<gfx::GLSurface> default_offscreen_surface_;
 149   ImageOperationQueue image_operations_;
 150
 151   DISALLOW_COPY_AND_ASSIGN(GpuChannelManager);
 152 };
 153
 154 }  // namespace content
 155
 156 #endif  // CONTENT_COMMON_GPU_GPU_CHANNEL_MANAGER_H_