src/content/common/gpu/gpu_channel_manager.cc

   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 #include "content/common/gpu/gpu_channel_manager.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "content/child/child_thread.h"
  10 #include "content/common/gpu/gpu_channel.h"
  11 #include "content/common/gpu/gpu_memory_manager.h"
  12 #include "content/common/gpu/gpu_messages.h"
  13 #include "content/common/gpu/sync_point_manager.h"
  14 #include "gpu/command_buffer/service/feature_info.h"
  15 #include "gpu/command_buffer/service/gpu_switches.h"
  16 #include "gpu/command_buffer/service/mailbox_manager.h"
  17 #include "gpu/command_buffer/service/memory_program_cache.h"
  18 #include "ui/gl/gl_bindings.h"
  19 #include "ui/gl/gl_share_group.h"
  20
  21 namespace content {
  22
  23 GpuChannelManager::ImageOperation::ImageOperation(
  24     int32 sync_point, base::Closure callback)
  25     : sync_point(sync_point),
  26       callback(callback) {
  27 }
  28
  29 GpuChannelManager::ImageOperation::~ImageOperation() {
  30 }
  31
  32 GpuChannelManager::GpuChannelManager(ChildThread* gpu_child_thread,
  33                                      GpuWatchdog* watchdog,
  34                                      base::MessageLoopProxy* io_message_loop,
  35                                      base::WaitableEvent* shutdown_event)
  36     : weak_factory_(this),
  37       io_message_loop_(io_message_loop),
  38       shutdown_event_(shutdown_event),
  39       gpu_child_thread_(gpu_child_thread),
  40       gpu_memory_manager_(
  41           this,
  42           GpuMemoryManager::kDefaultMaxSurfacesWithFrontbufferSoftLimit),
  43       watchdog_(watchdog),
  44       sync_point_manager_(new SyncPointManager) {
  45   DCHECK(gpu_child_thread);
  46   DCHECK(io_message_loop);
  47   DCHECK(shutdown_event);
  48 }
  49
  50 GpuChannelManager::~GpuChannelManager() {
  51   gpu_channels_.clear();
  52   if (default_offscreen_surface_.get()) {
  53     default_offscreen_surface_->Destroy();
  54     default_offscreen_surface_ = NULL;
  55   }
  56   DCHECK(image_operations_.empty());
  57 }
  58
  59 gpu::gles2::ProgramCache* GpuChannelManager::program_cache() {
  60   if (!program_cache_.get() &&
  61       (gfx::g_driver_gl.ext.b_ARB_get_program_binary ||
  62        gfx::g_driver_gl.ext.b_OES_get_program_binary) &&
  63       !CommandLine::ForCurrentProcess()->HasSwitch(
  64           switches::kDisableGpuProgramCache)) {
  65     program_cache_.reset(new gpu::gles2::MemoryProgramCache());
  66   }
  67   return program_cache_.get();
  68 }
  69
  70 void GpuChannelManager::RemoveChannel(int client_id) {
  71   Send(new GpuHostMsg_DestroyChannel(client_id));
  72   gpu_channels_.erase(client_id);
  73 }
  74
  75 int GpuChannelManager::GenerateRouteID() {
  76   static int last_id = 0;
  77   return ++last_id;
  78 }
  79
  80 void GpuChannelManager::AddRoute(int32 routing_id, IPC::Listener* listener) {
  81   gpu_child_thread_->AddRoute(routing_id, listener);
  82 }
  83
  84 void GpuChannelManager::RemoveRoute(int32 routing_id) {
  85   gpu_child_thread_->RemoveRoute(routing_id);
  86 }
  87
  88 GpuChannel* GpuChannelManager::LookupChannel(int32 client_id) {
  89   GpuChannelMap::const_iterator iter = gpu_channels_.find(client_id);
  90   if (iter == gpu_channels_.end())
  91     return NULL;
  92   else
  93     return iter->second.get();
  94 }
  95
  96 bool GpuChannelManager::OnMessageReceived(const IPC::Message& msg) {
  97   bool msg_is_ok = true;
  98   bool handled = true;
  99   IPC_BEGIN_MESSAGE_MAP_EX(GpuChannelManager, msg, msg_is_ok)
 100     IPC_MESSAGE_HANDLER(GpuMsg_EstablishChannel, OnEstablishChannel)
 101     IPC_MESSAGE_HANDLER(GpuMsg_CloseChannel, OnCloseChannel)
 102     IPC_MESSAGE_HANDLER(GpuMsg_CreateViewCommandBuffer,
 103                         OnCreateViewCommandBuffer)
 104     IPC_MESSAGE_HANDLER(GpuMsg_CreateImage, OnCreateImage)
 105     IPC_MESSAGE_HANDLER(GpuMsg_DeleteImage, OnDeleteImage)
 106     IPC_MESSAGE_HANDLER(GpuMsg_LoadedShader, OnLoadedShader)
 107     IPC_MESSAGE_UNHANDLED(handled = false)
 108   IPC_END_MESSAGE_MAP_EX()
 109   return handled;
 110 }
 111
 112 bool GpuChannelManager::Send(IPC::Message* msg) {
 113   return gpu_child_thread_->Send(msg);
 114 }
 115
 116 void GpuChannelManager::OnEstablishChannel(int client_id, bool share_context) {
 117   IPC::ChannelHandle channel_handle;
 118
 119   gfx::GLShareGroup* share_group = NULL;
 120   gpu::gles2::MailboxManager* mailbox_manager = NULL;
 121   if (share_context) {
 122     if (!share_group_.get()) {
 123       share_group_ = new gfx::GLShareGroup;
 124       DCHECK(!mailbox_manager_.get());
 125       mailbox_manager_ = new gpu::gles2::MailboxManager;
 126     }
 127     share_group = share_group_.get();
 128     mailbox_manager = mailbox_manager_.get();
 129   }
 130
 131   scoped_refptr<GpuChannel> channel = new GpuChannel(this,
 132                                                      watchdog_,
 133                                                      share_group,
 134                                                      mailbox_manager,
 135                                                      client_id,
 136                                                      false);
 137   if (channel->Init(io_message_loop_.get(), shutdown_event_)) {
 138     gpu_channels_[client_id] = channel;
 139     channel_handle.name = channel->GetChannelName();
 140
 141 #if defined(OS_POSIX)
 142     // On POSIX, pass the renderer-side FD. Also mark it as auto-close so
 143     // that it gets closed after it has been sent.
 144     int renderer_fd = channel->TakeRendererFileDescriptor();
 145     DCHECK_NE(-1, renderer_fd);
 146     channel_handle.socket = base::FileDescriptor(renderer_fd, true);
 147 #endif
 148   }
 149
 150   Send(new GpuHostMsg_ChannelEstablished(channel_handle));
 151 }
 152
 153 void GpuChannelManager::OnCloseChannel(
 154     const IPC::ChannelHandle& channel_handle) {
 155   for (GpuChannelMap::iterator iter = gpu_channels_.begin();
 156        iter != gpu_channels_.end(); ++iter) {
 157     if (iter->second->GetChannelName() == channel_handle.name) {
 158       gpu_channels_.erase(iter);
 159       return;
 160     }
 161   }
 162 }
 163
 164 void GpuChannelManager::OnCreateViewCommandBuffer(
 165     const gfx::GLSurfaceHandle& window,
 166     int32 surface_id,
 167     int32 client_id,
 168     const GPUCreateCommandBufferConfig& init_params) {
 169   DCHECK(surface_id);
 170   int32 route_id = MSG_ROUTING_NONE;
 171
 172   GpuChannelMap::const_iterator iter = gpu_channels_.find(client_id);
 173   if (iter != gpu_channels_.end()) {
 174     iter->second->CreateViewCommandBuffer(
 175         window, surface_id, init_params, &route_id);
 176   }
 177
 178   Send(new GpuHostMsg_CommandBufferCreated(route_id));
 179 }
 180
 181 void GpuChannelManager::CreateImage(
 182     gfx::PluginWindowHandle window, int32 client_id, int32 image_id) {
 183   gfx::Size size;
 184
 185   GpuChannelMap::const_iterator iter = gpu_channels_.find(client_id);
 186   if (iter != gpu_channels_.end()) {
 187     iter->second->CreateImage(window, image_id, &size);
 188   }
 189
 190   Send(new GpuHostMsg_ImageCreated(size));
 191 }
 192
 193 void GpuChannelManager::OnCreateImage(
 194     gfx::PluginWindowHandle window, int32 client_id, int32 image_id) {
 195   DCHECK(image_id);
 196
 197   if (image_operations_.empty()) {
 198     CreateImage(window, client_id, image_id);
 199   } else {
 200     image_operations_.push_back(
 201         new ImageOperation(0, base::Bind(&GpuChannelManager::CreateImage,
 202                                          base::Unretained(this),
 203                                          window,
 204                                          client_id,
 205                                          image_id)));
 206   }
 207 }
 208
 209 void GpuChannelManager::DeleteImage(int32 client_id, int32 image_id) {
 210   GpuChannelMap::const_iterator iter = gpu_channels_.find(client_id);
 211   if (iter != gpu_channels_.end()) {
 212     iter->second->DeleteImage(image_id);
 213   }
 214 }
 215
 216 void GpuChannelManager::OnDeleteImage(
 217     int32 client_id, int32 image_id, int32 sync_point) {
 218   DCHECK(image_id);
 219
 220   if (!sync_point && image_operations_.empty()) {
 221     DeleteImage(client_id, image_id);
 222   } else {
 223     image_operations_.push_back(
 224         new ImageOperation(sync_point,
 225                            base::Bind(&GpuChannelManager::DeleteImage,
 226                                       base::Unretained(this),
 227                                       client_id,
 228                                       image_id)));
 229     if (sync_point) {
 230       sync_point_manager()->AddSyncPointCallback(
 231           sync_point,
 232           base::Bind(&GpuChannelManager::OnDeleteImageSyncPointRetired,
 233                      base::Unretained(this),
 234                      image_operations_.back()));
 235     }
 236   }
 237 }
 238
 239 void GpuChannelManager::OnDeleteImageSyncPointRetired(
 240     ImageOperation* image_operation) {
 241   // Mark operation as no longer having a pending sync point.
 242   image_operation->sync_point = 0;
 243
 244   // De-queue operations until we reach a pending sync point.
 245   while (!image_operations_.empty()) {
 246     // Check if operation has a pending sync point.
 247     if (image_operations_.front()->sync_point)
 248       return;
 249
 250     image_operations_.front()->callback.Run();
 251     delete image_operations_.front();
 252     image_operations_.pop_front();
 253   }
 254 }
 255
 256 void GpuChannelManager::OnLoadedShader(std::string program_proto) {
 257   if (program_cache())
 258     program_cache()->LoadProgram(program_proto);
 259 }
 260
 261 bool GpuChannelManager::HandleMessagesScheduled() {
 262   for (GpuChannelMap::iterator iter = gpu_channels_.begin();
 263        iter != gpu_channels_.end(); ++iter) {
 264     if (iter->second->handle_messages_scheduled())
 265       return true;
 266   }
 267   return false;
 268 }
 269
 270 uint64 GpuChannelManager::MessagesProcessed() {
 271   uint64 messages_processed = 0;
 272
 273   for (GpuChannelMap::iterator iter = gpu_channels_.begin();
 274        iter != gpu_channels_.end(); ++iter) {
 275     messages_processed += iter->second->messages_processed();
 276   }
 277   return messages_processed;
 278 }
 279
 280 void GpuChannelManager::LoseAllContexts() {
 281   for (GpuChannelMap::iterator iter = gpu_channels_.begin();
 282        iter != gpu_channels_.end(); ++iter) {
 283     iter->second->MarkAllContextsLost();
 284   }
 285   base::MessageLoop::current()->PostTask(
 286       FROM_HERE,
 287       base::Bind(&GpuChannelManager::OnLoseAllContexts,
 288                  weak_factory_.GetWeakPtr()));
 289 }
 290
 291 void GpuChannelManager::OnLoseAllContexts() {
 292   gpu_channels_.clear();
 293 }
 294
 295 gfx::GLSurface* GpuChannelManager::GetDefaultOffscreenSurface() {
 296   if (!default_offscreen_surface_.get()) {
 297     default_offscreen_surface_ =
 298         gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
 299   }
 300   return default_offscreen_surface_.get();
 301 }
 302
 303 }  // namespace content