content/browser/gpu/gpu_process_host.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_H_
   6 #define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_
   7
   8 #include <map>
   9 #include <queue>
  10 #include <set>
  11 #include <string>
  12
  13 #include "base/callback.h"
  14 #include "base/containers/hash_tables.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/threading/non_thread_safe.h"
  17 #include "base/time/time.h"
  18 #include "content/browser/gpu/gpu_surface_tracker.h"
  19 #include "content/common/content_export.h"
  20 #include "content/common/gpu/gpu_memory_uma_stats.h"
  21 #include "content/common/gpu/gpu_process_launch_causes.h"
  22 #include "content/common/gpu/gpu_result_codes.h"
  23 #include "content/public/browser/browser_child_process_host_delegate.h"
  24 #include "content/public/browser/gpu_data_manager.h"
  25 #include "gpu/command_buffer/common/constants.h"
  26 #include "gpu/config/gpu_info.h"
  27 #include "ipc/ipc_sender.h"
  28 #include "ipc/message_filter.h"
  29 #include "ui/gfx/gpu_memory_buffer.h"
  30 #include "ui/gfx/native_widget_types.h"
  31 #include "ui/gfx/size.h"
  32 #include "url/gurl.h"
  33
  34 struct GPUCreateCommandBufferConfig;
  35
  36 namespace IPC {
  37 struct ChannelHandle;
  38 }
  39
  40 namespace content {
  41 class BrowserChildProcessHostImpl;
  42 class GpuMainThread;
  43 class RenderWidgetHostViewFrameSubscriber;
  44 class ShaderDiskCache;
  45
  46 typedef base::Thread* (*GpuMainThreadFactoryFunction)(const std::string& id);
  47
  48 class GpuProcessHost : public BrowserChildProcessHostDelegate,
  49                        public IPC::Sender,
  50                        public base::NonThreadSafe {
  51  public:
  52   enum GpuProcessKind {
  53     GPU_PROCESS_KIND_UNSANDBOXED,
  54     GPU_PROCESS_KIND_SANDBOXED,
  55     GPU_PROCESS_KIND_COUNT
  56   };
  57
  58   typedef base::Callback<void(const IPC::ChannelHandle&, const gpu::GPUInfo&)>
  59       EstablishChannelCallback;
  60
  61   typedef base::Callback<void(CreateCommandBufferResult)>
  62       CreateCommandBufferCallback;
  63
  64   typedef base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>
  65       CreateGpuMemoryBufferCallback;
  66
  67   static bool gpu_enabled() { return gpu_enabled_; }
  68   static int gpu_crash_count() { return gpu_crash_count_; }
  69
  70   // Creates a new GpuProcessHost or gets an existing one, resulting in the
  71   // launching of a GPU process if required.  Returns null on failure. It
  72   // is not safe to store the pointer once control has returned to the message
  73   // loop as it can be destroyed. Instead store the associated GPU host ID.
  74   // This could return NULL if GPU access is not allowed (blacklisted).
  75   CONTENT_EXPORT static GpuProcessHost* Get(GpuProcessKind kind,
  76                                             CauseForGpuLaunch cause);
  77
  78   // Retrieves a list of process handles for all gpu processes.
  79   static void GetProcessHandles(
  80       const GpuDataManager::GetGpuProcessHandlesCallback& callback);
  81
  82   // Helper function to send the given message to the GPU process on the IO
  83   // thread.  Calls Get and if a host is returned, sends it.  Can be called from
  84   // any thread.  Deletes the message if it cannot be sent.
  85   CONTENT_EXPORT static void SendOnIO(GpuProcessKind kind,
  86                                       CauseForGpuLaunch cause,
  87                                       IPC::Message* message);
  88
  89   CONTENT_EXPORT static void RegisterGpuMainThreadFactory(
  90       GpuMainThreadFactoryFunction create);
  91
  92   // Get the GPU process host for the GPU process with the given ID. Returns
  93   // null if the process no longer exists.
  94   static GpuProcessHost* FromID(int host_id);
  95   int host_id() const { return host_id_; }
  96
  97   // IPC::Sender implementation.
  98   bool Send(IPC::Message* msg) override;
  99
 100   // Adds a message filter to the GpuProcessHost's channel.
 101   void AddFilter(IPC::MessageFilter* filter);
 102
 103   // Tells the GPU process to create a new channel for communication with a
 104   // client. Once the GPU process responds asynchronously with the IPC handle
 105   // and GPUInfo, we call the callback.
 106   void EstablishGpuChannel(int client_id,
 107                            bool share_context,
 108                            bool allow_future_sync_points,
 109                            const EstablishChannelCallback& callback);
 110
 111   // Tells the GPU process to create a new command buffer that draws into the
 112   // given surface.
 113   void CreateViewCommandBuffer(
 114       const gfx::GLSurfaceHandle& compositing_surface,
 115       int surface_id,
 116       int client_id,
 117       const GPUCreateCommandBufferConfig& init_params,
 118       int route_id,
 119       const CreateCommandBufferCallback& callback);
 120
 121   // Tells the GPU process to create a new GPU memory buffer.
 122   void CreateGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
 123                              const gfx::Size& size,
 124                              gfx::GpuMemoryBuffer::Format format,
 125                              gfx::GpuMemoryBuffer::Usage usage,
 126                              int client_id,
 127                              int32 surface_id,
 128                              const CreateGpuMemoryBufferCallback& callback);
 129
 130   // Tells the GPU process to destroy GPU memory buffer.
 131   void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
 132                               int client_id,
 133                               int sync_point);
 134
 135   // What kind of GPU process, e.g. sandboxed or unsandboxed.
 136   GpuProcessKind kind();
 137
 138   void ForceShutdown();
 139
 140   void BeginFrameSubscription(
 141       int surface_id,
 142       base::WeakPtr<RenderWidgetHostViewFrameSubscriber> subscriber);
 143   void EndFrameSubscription(int surface_id);
 144   void LoadedShader(const std::string& key, const std::string& data);
 145
 146  private:
 147   static bool ValidateHost(GpuProcessHost* host);
 148
 149   GpuProcessHost(int host_id, GpuProcessKind kind);
 150   ~GpuProcessHost() override;
 151
 152   bool Init();
 153
 154   // Post an IPC message to the UI shim's message handler on the UI thread.
 155   void RouteOnUIThread(const IPC::Message& message);
 156
 157   // BrowserChildProcessHostDelegate implementation.
 158   bool OnMessageReceived(const IPC::Message& message) override;
 159   void OnChannelConnected(int32 peer_pid) override;
 160   void OnProcessLaunched() override;
 161   void OnProcessCrashed(int exit_code) override;
 162
 163   // Message handlers.
 164   void OnInitialized(bool result, const gpu::GPUInfo& gpu_info);
 165   void OnChannelEstablished(const IPC::ChannelHandle& channel_handle);
 166   void OnCommandBufferCreated(CreateCommandBufferResult result);
 167   void OnDestroyCommandBuffer(int32 surface_id);
 168   void OnGpuMemoryBufferCreated(const gfx::GpuMemoryBufferHandle& handle);
 169   void OnDidCreateOffscreenContext(const GURL& url);
 170   void OnDidLoseContext(bool offscreen,
 171                         gpu::error::ContextLostReason reason,
 172                         const GURL& url);
 173   void OnDidDestroyOffscreenContext(const GURL& url);
 174   void OnGpuMemoryUmaStatsReceived(const GPUMemoryUmaStats& stats);
 175 #if defined(OS_MACOSX)
 176   void OnAcceleratedSurfaceBuffersSwapped(const IPC::Message& message);
 177 #endif
 178
 179   void CreateChannelCache(int32 client_id);
 180   void OnDestroyChannel(int32 client_id);
 181   void OnCacheShader(int32 client_id, const std::string& key,
 182                      const std::string& shader);
 183
 184   bool LaunchGpuProcess(const std::string& channel_id);
 185
 186   void SendOutstandingReplies();
 187
 188   void BlockLiveOffscreenContexts();
 189
 190   // Update GPU crash counters.  Disable GPU if crash limit is reached.
 191   void RecordProcessCrash();
 192
 193   std::string GetShaderPrefixKey();
 194
 195   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
 196   int host_id_;
 197
 198   // These are the channel requests that we have already sent to
 199   // the GPU process, but haven't heard back about yet.
 200   std::queue<EstablishChannelCallback> channel_requests_;
 201
 202   // The pending create command buffer requests we need to reply to.
 203   std::queue<CreateCommandBufferCallback> create_command_buffer_requests_;
 204
 205   // The pending create gpu memory buffer requests we need to reply to.
 206   std::queue<CreateGpuMemoryBufferCallback> create_gpu_memory_buffer_requests_;
 207
 208   // Surface ids for pending gpu memory buffer request refs.
 209   std::queue<int32> create_gpu_memory_buffer_surface_refs_;
 210
 211   // Qeueud messages to send when the process launches.
 212   std::queue<IPC::Message*> queued_messages_;
 213
 214   // Whether the GPU process is valid, set to false after Send() failed.
 215   bool valid_;
 216
 217   // Whether we are running a GPU thread inside the browser process instead
 218   // of a separate GPU process.
 219   bool in_process_;
 220
 221   bool swiftshader_rendering_;
 222   GpuProcessKind kind_;
 223
 224   scoped_ptr<base::Thread> in_process_gpu_thread_;
 225
 226   // Whether we actually launched a GPU process.
 227   bool process_launched_;
 228
 229   // Whether the GPU process successfully initialized.
 230   bool initialized_;
 231
 232   // Time Init started.  Used to log total GPU process startup time to UMA.
 233   base::TimeTicks init_start_time_;
 234
 235   // Whether this host recorded a GPU crash or not.
 236   bool gpu_crash_recorded_;
 237
 238   // Master switch for enabling/disabling GPU acceleration for the current
 239   // browser session. It does not change the acceleration settings for
 240   // existing tabs, just the future ones.
 241   static bool gpu_enabled_;
 242
 243   static bool hardware_gpu_enabled_;
 244
 245   static int gpu_crash_count_;
 246   static int gpu_recent_crash_count_;
 247   static bool crashed_before_;
 248   static int swiftshader_crash_count_;
 249
 250   scoped_ptr<BrowserChildProcessHostImpl> process_;
 251
 252   // Track the URLs of the pages which have live offscreen contexts,
 253   // assumed to be associated with untrusted content such as WebGL.
 254   // For best robustness, when any context lost notification is
 255   // received, assume all of these URLs are guilty, and block
 256   // automatic execution of 3D content from those domains.
 257   std::multiset<GURL> urls_with_live_offscreen_contexts_;
 258
 259   // Statics kept around to send to UMA histograms on GPU process lost.
 260   bool uma_memory_stats_received_;
 261   GPUMemoryUmaStats uma_memory_stats_;
 262
 263   // This map of frame subscribers are listening for frame presentation events.
 264   // The key is the surface id and value is the subscriber.
 265   typedef base::hash_map<int,
 266                          base::WeakPtr<RenderWidgetHostViewFrameSubscriber> >
 267   FrameSubscriberMap;
 268   FrameSubscriberMap frame_subscribers_;
 269
 270   typedef std::map<int32, scoped_refptr<ShaderDiskCache> >
 271       ClientIdToShaderCacheMap;
 272   ClientIdToShaderCacheMap client_id_to_shader_cache_;
 273
 274   std::string shader_prefix_key_;
 275
 276   // Keep an extra reference to the SurfaceRef stored in the GpuSurfaceTracker
 277   // in this map so that we don't destroy it whilst the GPU process is
 278   // drawing to it.
 279   typedef std::multimap<int, scoped_refptr<GpuSurfaceTracker::SurfaceRef> >
 280       SurfaceRefMap;
 281   SurfaceRefMap surface_refs_;
 282
 283   DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
 284 };
 285
 286 }  // namespace content
 287
 288 #endif  // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_