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/public/browser/browser_child_process_host_delegate.h" 23 #include "content/public/browser/gpu_data_manager.h" 24 #include "gpu/command_buffer/common/constants.h" 25 #include "gpu/config/gpu_info.h" 26 #include "ipc/ipc_channel_proxy.h" 27 #include "ipc/ipc_sender.h" 28 #include "ui/gfx/native_widget_types.h" 29 #include "ui/gfx/size.h" 30 #include "url/gurl.h" 31 32 struct GPUCreateCommandBufferConfig; 33 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params; 34 struct GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params; 35 struct GpuHostMsg_AcceleratedSurfaceRelease_Params; 36 37 namespace IPC { 38 struct ChannelHandle; 39 } 40 41 namespace content { 42 class BrowserChildProcessHostImpl; 43 class GpuMainThread; 44 class RenderWidgetHostViewFrameSubscriber; 45 class ShaderDiskCache; 46 47 typedef base::Thread* (*GpuMainThreadFactoryFunction)(const std::string& id); 48 49 class GpuProcessHost : public BrowserChildProcessHostDelegate, 50 public IPC::Sender, 51 public base::NonThreadSafe { 52 public: 53 enum GpuProcessKind { 54 GPU_PROCESS_KIND_UNSANDBOXED, 55 GPU_PROCESS_KIND_SANDBOXED, 56 GPU_PROCESS_KIND_COUNT 57 }; 58 59 typedef base::Callback<void(const IPC::ChannelHandle&, const gpu::GPUInfo&)> 60 EstablishChannelCallback; 61 62 typedef base::Callback<void(int32)> CreateCommandBufferCallback; 63 64 typedef base::Callback<void(const gfx::Size)> CreateImageCallback; 65 66 static bool gpu_enabled() { return gpu_enabled_; } 67 68 // Creates a new GpuProcessHost or gets an existing one, resulting in the 69 // launching of a GPU process if required. Returns null on failure. It 70 // is not safe to store the pointer once control has returned to the message 71 // loop as it can be destroyed. Instead store the associated GPU host ID. 72 // This could return NULL if GPU access is not allowed (blacklisted). 73 CONTENT_EXPORT static GpuProcessHost* Get(GpuProcessKind kind, 74 CauseForGpuLaunch cause); 75 76 // Retrieves a list of process handles for all gpu processes. 77 static void GetProcessHandles( 78 const GpuDataManager::GetGpuProcessHandlesCallback& callback); 79 80 // Helper function to send the given message to the GPU process on the IO 81 // thread. Calls Get and if a host is returned, sends it. Can be called from 82 // any thread. Deletes the message if it cannot be sent. 83 CONTENT_EXPORT static void SendOnIO(GpuProcessKind kind, 84 CauseForGpuLaunch cause, 85 IPC::Message* message); 86 87 CONTENT_EXPORT static void RegisterGpuMainThreadFactory( 88 GpuMainThreadFactoryFunction create); 89 90 // Get the GPU process host for the GPU process with the given ID. Returns 91 // null if the process no longer exists. 92 static GpuProcessHost* FromID(int host_id); 93 int host_id() const { return host_id_; } 94 95 // IPC::Sender implementation. 96 virtual bool Send(IPC::Message* msg) OVERRIDE; 97 98 // Adds a message filter to the GpuProcessHost's channel. 99 void AddFilter(IPC::ChannelProxy::MessageFilter* filter); 100 101 // Tells the GPU process to create a new channel for communication with a 102 // client. Once the GPU process responds asynchronously with the IPC handle 103 // and GPUInfo, we call the callback. 104 void EstablishGpuChannel(int client_id, 105 bool share_context, 106 const EstablishChannelCallback& callback); 107 108 // Tells the GPU process to create a new command buffer that draws into the 109 // given surface. 110 void CreateViewCommandBuffer( 111 const gfx::GLSurfaceHandle& compositing_surface, 112 int surface_id, 113 int client_id, 114 const GPUCreateCommandBufferConfig& init_params, 115 const CreateCommandBufferCallback& callback); 116 117 // Tells the GPU process to create a new image using the given window. 118 void CreateImage( 119 gfx::PluginWindowHandle window, 120 int client_id, 121 int image_id, 122 const CreateImageCallback& callback); 123 124 // Tells the GPU process to delete image. 125 void DeleteImage(int client_id, int image_id, int sync_point); 126 127 // What kind of GPU process, e.g. sandboxed or unsandboxed. 128 GpuProcessKind kind(); 129 130 void ForceShutdown(); 131 132 void BeginFrameSubscription( 133 int surface_id, 134 base::WeakPtr<RenderWidgetHostViewFrameSubscriber> subscriber); 135 void EndFrameSubscription(int surface_id); 136 void LoadedShader(const std::string& key, const std::string& data); 137 138 private: 139 static bool ValidateHost(GpuProcessHost* host); 140 141 GpuProcessHost(int host_id, GpuProcessKind kind); 142 virtual ~GpuProcessHost(); 143 144 bool Init(); 145 146 // Post an IPC message to the UI shim's message handler on the UI thread. 147 void RouteOnUIThread(const IPC::Message& message); 148 149 // BrowserChildProcessHostDelegate implementation. 150 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 151 virtual void OnChannelConnected(int32 peer_pid) OVERRIDE; 152 virtual void OnProcessLaunched() OVERRIDE; 153 virtual void OnProcessCrashed(int exit_code) OVERRIDE; 154 155 // Message handlers. 156 void OnInitialized(bool result, const gpu::GPUInfo& gpu_info); 157 void OnChannelEstablished(const IPC::ChannelHandle& channel_handle); 158 void OnCommandBufferCreated(const int32 route_id); 159 void OnDestroyCommandBuffer(int32 surface_id); 160 void OnImageCreated(const gfx::Size size); 161 void OnDidCreateOffscreenContext(const GURL& url); 162 void OnDidLoseContext(bool offscreen, 163 gpu::error::ContextLostReason reason, 164 const GURL& url); 165 void OnDidDestroyOffscreenContext(const GURL& url); 166 void OnGpuMemoryUmaStatsReceived(const GPUMemoryUmaStats& stats); 167 #if defined(OS_MACOSX) 168 void OnAcceleratedSurfaceBuffersSwapped( 169 const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params); 170 #endif 171 // Note: Different implementations depending on USE_AURA. 172 #if defined(OS_WIN) 173 void OnAcceleratedSurfaceBuffersSwapped( 174 const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params); 175 void OnAcceleratedSurfacePostSubBuffer( 176 const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params); 177 void OnAcceleratedSurfaceSuspend(int32 surface_id); 178 void OnAcceleratedSurfaceRelease( 179 const GpuHostMsg_AcceleratedSurfaceRelease_Params& params); 180 #endif 181 182 void CreateChannelCache(int32 client_id); 183 void OnDestroyChannel(int32 client_id); 184 void OnCacheShader(int32 client_id, const std::string& key, 185 const std::string& shader); 186 187 bool LaunchGpuProcess(const std::string& channel_id); 188 189 void SendOutstandingReplies(); 190 191 void BlockLiveOffscreenContexts(); 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 image requests we need to reply to. 206 std::queue<CreateImageCallback> create_image_requests_; 207 208 209 // 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 // Master switch for enabling/disabling GPU acceleration for the current 234 // browser session. It does not change the acceleration settings for 235 // existing tabs, just the future ones. 236 static bool gpu_enabled_; 237 238 static bool hardware_gpu_enabled_; 239 240 scoped_ptr<BrowserChildProcessHostImpl> process_; 241 242 // Track the URLs of the pages which have live offscreen contexts, 243 // assumed to be associated with untrusted content such as WebGL. 244 // For best robustness, when any context lost notification is 245 // received, assume all of these URLs are guilty, and block 246 // automatic execution of 3D content from those domains. 247 std::multiset<GURL> urls_with_live_offscreen_contexts_; 248 249 // Statics kept around to send to UMA histograms on GPU process lost. 250 bool uma_memory_stats_received_; 251 GPUMemoryUmaStats uma_memory_stats_; 252 253 // This map of frame subscribers are listening for frame presentation events. 254 // The key is the surface id and value is the subscriber. 255 typedef base::hash_map<int, 256 base::WeakPtr<RenderWidgetHostViewFrameSubscriber> > 257 FrameSubscriberMap; 258 FrameSubscriberMap frame_subscribers_; 259 260 typedef std::map<int32, scoped_refptr<ShaderDiskCache> > 261 ClientIdToShaderCacheMap; 262 ClientIdToShaderCacheMap client_id_to_shader_cache_; 263 264 std::string shader_prefix_key_; 265 266 // Keep an extra reference to the SurfaceRef stored in the GpuSurfaceTracker 267 // in this map so that we don't destroy it whilst the GPU process is 268 // drawing to it. 269 typedef std::multimap<int, scoped_refptr<GpuSurfaceTracker::SurfaceRef> > 270 SurfaceRefMap; 271 SurfaceRefMap surface_refs_; 272 273 DISALLOW_COPY_AND_ASSIGN(GpuProcessHost); 274 }; 275 276 } // namespace content 277 278 #endif // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_H_ 279
