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