src/content/browser/gpu/gpu_data_manager_impl_private.cc

   1 // Copyright (c) 2013 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/browser/gpu/gpu_data_manager_impl_private.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/command_line.h"
  10 #include "base/debug/trace_event.h"
  11 #include "base/metrics/field_trial.h"
  12 #include "base/metrics/histogram.h"
  13 #include "base/metrics/sparse_histogram.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "base/strings/stringprintf.h"
  16 #include "base/sys_info.h"
  17 #include "base/version.h"
  18 #include "cc/base/switches.h"
  19 #include "content/browser/gpu/gpu_process_host.h"
  20 #include "content/common/gpu/gpu_messages.h"
  21 #include "content/public/browser/browser_thread.h"
  22 #include "content/public/browser/gpu_data_manager_observer.h"
  23 #include "content/public/common/content_client.h"
  24 #include "content/public/common/content_constants.h"
  25 #include "content/public/common/content_switches.h"
  26 #include "gpu/command_buffer/service/gpu_switches.h"
  27 #include "gpu/config/gpu_control_list_jsons.h"
  28 #include "gpu/config/gpu_driver_bug_workaround_type.h"
  29 #include "gpu/config/gpu_feature_type.h"
  30 #include "gpu/config/gpu_info_collector.h"
  31 #include "gpu/config/gpu_util.h"
  32 #include "ui/base/ui_base_switches.h"
  33 #include "ui/gl/gl_implementation.h"
  34 #include "ui/gl/gl_switches.h"
  35 #include "ui/gl/gpu_switching_manager.h"
  36 #include "webkit/common/webpreferences.h"
  37
  38 #if defined(OS_MACOSX)
  39 #include <ApplicationServices/ApplicationServices.h>
  40 #endif  // OS_MACOSX
  41 #if defined(OS_WIN)
  42 #include "base/win/windows_version.h"
  43 #endif  // OS_WIN
  44 #if defined(OS_ANDROID)
  45 #include "ui/gfx/android/device_display_info.h"
  46 #endif  // OS_ANDROID
  47
  48 namespace content {
  49
  50 namespace {
  51
  52 enum GpuFeatureStatus {
  53     kGpuFeatureEnabled = 0,
  54     kGpuFeatureBlacklisted = 1,
  55     kGpuFeatureDisabled = 2,  // disabled by user but not blacklisted
  56     kGpuFeatureNumStatus
  57 };
  58
  59 #if defined(OS_WIN)
  60
  61 enum WinSubVersion {
  62   kWinOthers = 0,
  63   kWinXP,
  64   kWinVista,
  65   kWin7,
  66   kWin8,
  67   kNumWinSubVersions
  68 };
  69
  70 int GetGpuBlacklistHistogramValueWin(GpuFeatureStatus status) {
  71   static WinSubVersion sub_version = kNumWinSubVersions;
  72   if (sub_version == kNumWinSubVersions) {
  73     sub_version = kWinOthers;
  74     std::string version_str = base::SysInfo::OperatingSystemVersion();
  75     size_t pos = version_str.find_first_not_of("0123456789.");
  76     if (pos != std::string::npos)
  77       version_str = version_str.substr(0, pos);
  78     Version os_version(version_str);
  79     if (os_version.IsValid() && os_version.components().size() >= 2) {
  80       const std::vector<uint16>& version_numbers = os_version.components();
  81       if (version_numbers[0] == 5)
  82         sub_version = kWinXP;
  83       else if (version_numbers[0] == 6 && version_numbers[1] == 0)
  84         sub_version = kWinVista;
  85       else if (version_numbers[0] == 6 && version_numbers[1] == 1)
  86         sub_version = kWin7;
  87       else if (version_numbers[0] == 6 && version_numbers[1] == 2)
  88         sub_version = kWin8;
  89     }
  90   }
  91   int entry_index = static_cast<int>(sub_version) * kGpuFeatureNumStatus;
  92   switch (status) {
  93     case kGpuFeatureEnabled:
  94       break;
  95     case kGpuFeatureBlacklisted:
  96       entry_index++;
  97       break;
  98     case kGpuFeatureDisabled:
  99       entry_index += 2;
 100       break;
 101   }
 102   return entry_index;
 103 }
 104 #endif  // OS_WIN
 105
 106 // Send UMA histograms about the enabled features and GPU properties.
 107 void UpdateStats(const gpu::GPUInfo& gpu_info,
 108                  const gpu::GpuBlacklist* blacklist,
 109                  const std::set<int>& blacklisted_features) {
 110   uint32 max_entry_id = blacklist->max_entry_id();
 111   if (max_entry_id == 0) {
 112     // GPU Blacklist was not loaded.  No need to go further.
 113     return;
 114   }
 115
 116   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 117   bool disabled = false;
 118
 119   // Use entry 0 to capture the total number of times that data
 120   // was recorded in this histogram in order to have a convenient
 121   // denominator to compute blacklist percentages for the rest of the
 122   // entries.
 123   UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
 124       0, max_entry_id + 1);
 125
 126   if (blacklisted_features.size() != 0) {
 127     std::vector<uint32> flag_entries;
 128     blacklist->GetDecisionEntries(&flag_entries, disabled);
 129     DCHECK_GT(flag_entries.size(), 0u);
 130     for (size_t i = 0; i < flag_entries.size(); ++i) {
 131       UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerEntry",
 132           flag_entries[i], max_entry_id + 1);
 133     }
 134   }
 135
 136   // This counts how many users are affected by a disabled entry - this allows
 137   // us to understand the impact of an entry before enable it.
 138   std::vector<uint32> flag_disabled_entries;
 139   disabled = true;
 140   blacklist->GetDecisionEntries(&flag_disabled_entries, disabled);
 141   for (size_t i = 0; i < flag_disabled_entries.size(); ++i) {
 142     UMA_HISTOGRAM_ENUMERATION("GPU.BlacklistTestResultsPerDisabledEntry",
 143         flag_disabled_entries[i], max_entry_id + 1);
 144   }
 145
 146   const gpu::GpuFeatureType kGpuFeatures[] = {
 147       gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS,
 148       gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING,
 149       gpu::GPU_FEATURE_TYPE_WEBGL
 150   };
 151   const std::string kGpuBlacklistFeatureHistogramNames[] = {
 152       "GPU.BlacklistFeatureTestResults.Accelerated2dCanvas",
 153       "GPU.BlacklistFeatureTestResults.AcceleratedCompositing",
 154       "GPU.BlacklistFeatureTestResults.Webgl",
 155   };
 156   const bool kGpuFeatureUserFlags[] = {
 157       command_line.HasSwitch(switches::kDisableAccelerated2dCanvas),
 158       command_line.HasSwitch(switches::kDisableAcceleratedCompositing),
 159       command_line.HasSwitch(switches::kDisableExperimentalWebGL),
 160   };
 161 #if defined(OS_WIN)
 162   const std::string kGpuBlacklistFeatureHistogramNamesWin[] = {
 163       "GPU.BlacklistFeatureTestResultsWindows.Accelerated2dCanvas",
 164       "GPU.BlacklistFeatureTestResultsWindows.AcceleratedCompositing",
 165       "GPU.BlacklistFeatureTestResultsWindows.Webgl",
 166   };
 167 #endif
 168   const size_t kNumFeatures =
 169       sizeof(kGpuFeatures) / sizeof(gpu::GpuFeatureType);
 170   for (size_t i = 0; i < kNumFeatures; ++i) {
 171     // We can't use UMA_HISTOGRAM_ENUMERATION here because the same name is
 172     // expected if the macro is used within a loop.
 173     GpuFeatureStatus value = kGpuFeatureEnabled;
 174     if (blacklisted_features.count(kGpuFeatures[i]))
 175       value = kGpuFeatureBlacklisted;
 176     else if (kGpuFeatureUserFlags[i])
 177       value = kGpuFeatureDisabled;
 178     base::HistogramBase* histogram_pointer = base::LinearHistogram::FactoryGet(
 179         kGpuBlacklistFeatureHistogramNames[i],
 180         1, kGpuFeatureNumStatus, kGpuFeatureNumStatus + 1,
 181         base::HistogramBase::kUmaTargetedHistogramFlag);
 182     histogram_pointer->Add(value);
 183 #if defined(OS_WIN)
 184     histogram_pointer = base::LinearHistogram::FactoryGet(
 185         kGpuBlacklistFeatureHistogramNamesWin[i],
 186         1, kNumWinSubVersions * kGpuFeatureNumStatus,
 187         kNumWinSubVersions * kGpuFeatureNumStatus + 1,
 188         base::HistogramBase::kUmaTargetedHistogramFlag);
 189     histogram_pointer->Add(GetGpuBlacklistHistogramValueWin(value));
 190 #endif
 191   }
 192
 193   UMA_HISTOGRAM_SPARSE_SLOWLY("GPU.GLResetNotificationStrategy",
 194       gpu_info.gl_reset_notification_strategy);
 195 }
 196
 197 // Combine the integers into a string, seperated by ','.
 198 std::string IntSetToString(const std::set<int>& list) {
 199   std::string rt;
 200   for (std::set<int>::const_iterator it = list.begin();
 201        it != list.end(); ++it) {
 202     if (!rt.empty())
 203       rt += ",";
 204     rt += base::IntToString(*it);
 205   }
 206   return rt;
 207 }
 208
 209 #if defined(OS_MACOSX)
 210 void DisplayReconfigCallback(CGDirectDisplayID display,
 211                              CGDisplayChangeSummaryFlags flags,
 212                              void* gpu_data_manager) {
 213   if (flags == kCGDisplayBeginConfigurationFlag)
 214     return; // This call contains no information about the display change
 215
 216   GpuDataManagerImpl* manager =
 217       reinterpret_cast<GpuDataManagerImpl*>(gpu_data_manager);
 218   DCHECK(manager);
 219
 220   uint32_t displayCount;
 221   CGGetActiveDisplayList(0, NULL, &displayCount);
 222
 223   bool fireGpuSwitch = flags & kCGDisplayAddFlag;
 224
 225   if (displayCount != manager->GetDisplayCount()) {
 226     manager->SetDisplayCount(displayCount);
 227     fireGpuSwitch = true;
 228   }
 229
 230   if (fireGpuSwitch)
 231     manager->HandleGpuSwitch();
 232 }
 233 #endif  // OS_MACOSX
 234
 235 #if defined(OS_ANDROID)
 236 void ApplyAndroidWorkarounds(const gpu::GPUInfo& gpu_info,
 237                              CommandLine* command_line,
 238                              std::set<int>* workarounds) {
 239   std::string vendor(StringToLowerASCII(gpu_info.gl_vendor));
 240   std::string renderer(StringToLowerASCII(gpu_info.gl_renderer));
 241   std::string version(StringToLowerASCII(gpu_info.gl_version));
 242
 243   if (vendor.find("nvidia") != std::string::npos &&
 244       version.find("3.1") != std::string::npos) {
 245     workarounds->insert(gpu::USE_VIRTUALIZED_GL_CONTEXTS);
 246   }
 247
 248   bool is_img =
 249       gpu_info.gl_vendor.find("Imagination") != std::string::npos;
 250
 251   gfx::DeviceDisplayInfo info;
 252   int default_tile_size = 256;
 253
 254   // TODO(epenner): Now that this is somewhat generic, maybe we can
 255   // unify this for all platforms (http://crbug.com/159524)
 256
 257   bool real_size_supported = true;
 258   int display_width = info.GetPhysicalDisplayWidth();
 259   int display_height = info.GetPhysicalDisplayHeight();
 260   if (display_width == 0 || display_height == 0) {
 261     real_size_supported = false;
 262     display_width = info.GetDisplayWidth();
 263     display_height = info.GetDisplayHeight();
 264   }
 265
 266   int portrait_width = std::min(display_width, display_height);
 267   int landscape_width = std::max(display_width, display_height);
 268
 269   if (real_size_supported) {
 270     // Maximum HD dimensions should be 768x1280
 271     // Maximum FHD dimensions should be 1200x1920
 272     if (portrait_width > 768 || landscape_width > 1280)
 273        default_tile_size = 384;
 274     if (portrait_width > 1200 || landscape_width > 1920)
 275        default_tile_size = 512;
 276
 277     // Adjust for some resolutions that barely straddle an extra
 278     // tile when in portrait mode. This helps worst case scroll/raster
 279     // by not needing a full extra tile for each row.
 280     if (default_tile_size == 256 && portrait_width == 768)
 281       default_tile_size += 32;
 282     if (default_tile_size == 384 && portrait_width == 1200)
 283       default_tile_size += 32;
 284   } else {
 285     // We don't know the exact resolution due to screen controls etc.
 286     // So this just estimates the values above using tile counts.
 287     int numTiles = (display_width * display_height) / (256 * 256);
 288     if (numTiles > 16)
 289       default_tile_size = 384;
 290     if (numTiles >= 40)
 291       default_tile_size = 512;
 292   }
 293
 294   // IMG: Fast async texture uploads only work with non-power-of-two,
 295   // but still multiple-of-eight sizes.
 296   // http://crbug.com/168099
 297   if (is_img)
 298     default_tile_size -= 8;
 299
 300   // Set the command line if it isn't already set and we changed
 301   // the default tile size.
 302   if (default_tile_size != 256 &&
 303       !command_line->HasSwitch(switches::kDefaultTileWidth) &&
 304       !command_line->HasSwitch(switches::kDefaultTileHeight)) {
 305     std::stringstream size;
 306     size << default_tile_size;
 307     command_line->AppendSwitchASCII(
 308         switches::kDefaultTileWidth, size.str());
 309     command_line->AppendSwitchASCII(
 310         switches::kDefaultTileHeight, size.str());
 311   }
 312 }
 313 #endif  // OS_ANDROID
 314
 315 // Overwrite force gpu workaround if a commandline switch exists.
 316 void AdjustGpuSwitchingOption(std::set<int>* workarounds) {
 317   DCHECK(workarounds);
 318   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 319   std::string option = command_line.GetSwitchValueASCII(
 320       switches::kGpuSwitching);
 321   if (option == switches::kGpuSwitchingOptionNameForceDiscrete) {
 322     workarounds->erase(gpu::FORCE_INTEGRATED_GPU);
 323     workarounds->insert(gpu::FORCE_DISCRETE_GPU);
 324   } else if (option == switches::kGpuSwitchingOptionNameForceIntegrated) {
 325     workarounds->erase(gpu::FORCE_DISCRETE_GPU);
 326     workarounds->insert(gpu::FORCE_INTEGRATED_GPU);
 327   }
 328 }
 329
 330 // Block all domains' use of 3D APIs for this many milliseconds if
 331 // approaching a threshold where system stability might be compromised.
 332 const int64 kBlockAllDomainsMs = 10000;
 333 const int kNumResetsWithinDuration = 1;
 334
 335 // Enums for UMA histograms.
 336 enum BlockStatusHistogram {
 337   BLOCK_STATUS_NOT_BLOCKED,
 338   BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
 339   BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
 340   BLOCK_STATUS_MAX
 341 };
 342
 343 }  // namespace anonymous
 344
 345 void GpuDataManagerImplPrivate::InitializeForTesting(
 346     const std::string& gpu_blacklist_json,
 347     const gpu::GPUInfo& gpu_info) {
 348   // This function is for testing only, so disable histograms.
 349   update_histograms_ = false;
 350
 351   // Prevent all further initialization.
 352   finalized_ = true;
 353
 354   InitializeImpl(gpu_blacklist_json, std::string(), gpu_info);
 355 }
 356
 357 bool GpuDataManagerImplPrivate::IsFeatureBlacklisted(int feature) const {
 358 #if defined(OS_CHROMEOS)
 359   if (feature == gpu::GPU_FEATURE_TYPE_PANEL_FITTING &&
 360       CommandLine::ForCurrentProcess()->HasSwitch(
 361           switches::kDisablePanelFitting)) {
 362     return true;
 363   }
 364 #endif  // OS_CHROMEOS
 365   if (use_swiftshader_) {
 366     // Skia's software rendering is probably more efficient than going through
 367     // software emulation of the GPU, so use that.
 368     if (feature == gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)
 369       return true;
 370     return false;
 371   }
 372
 373   return (blacklisted_features_.count(feature) == 1);
 374 }
 375
 376 bool GpuDataManagerImplPrivate::IsDriverBugWorkaroundActive(int feature) const {
 377   return (gpu_driver_bugs_.count(feature) == 1);
 378 }
 379
 380 size_t GpuDataManagerImplPrivate::GetBlacklistedFeatureCount() const {
 381   if (use_swiftshader_)
 382     return 1;
 383   return blacklisted_features_.size();
 384 }
 385
 386 void GpuDataManagerImplPrivate::SetDisplayCount(unsigned int display_count) {
 387   display_count_ = display_count;
 388 }
 389
 390 unsigned int GpuDataManagerImplPrivate::GetDisplayCount() const {
 391   return display_count_;
 392 }
 393
 394 gpu::GPUInfo GpuDataManagerImplPrivate::GetGPUInfo() const {
 395   return gpu_info_;
 396 }
 397
 398 void GpuDataManagerImplPrivate::GetGpuProcessHandles(
 399     const GpuDataManager::GetGpuProcessHandlesCallback& callback) const {
 400   GpuProcessHost::GetProcessHandles(callback);
 401 }
 402
 403 bool GpuDataManagerImplPrivate::GpuAccessAllowed(
 404     std::string* reason) const {
 405   if (use_swiftshader_)
 406     return true;
 407
 408   if (!gpu_process_accessible_) {
 409     if (reason) {
 410       *reason = "GPU process launch failed.";
 411     }
 412     return false;
 413   }
 414
 415   if (card_blacklisted_) {
 416     if (reason) {
 417       *reason = "GPU access is disabled ";
 418       CommandLine* command_line = CommandLine::ForCurrentProcess();
 419       if (command_line->HasSwitch(switches::kDisableGpu))
 420         *reason += "through commandline switch --disable-gpu.";
 421       else
 422         *reason += "in chrome://settings.";
 423     }
 424     return false;
 425   }
 426
 427   // We only need to block GPU process if more features are disallowed other
 428   // than those in the preliminary gpu feature flags because the latter work
 429   // through renderer commandline switches.
 430   std::set<int> features = preliminary_blacklisted_features_;
 431   gpu::MergeFeatureSets(&features, blacklisted_features_);
 432   if (features.size() > preliminary_blacklisted_features_.size()) {
 433     if (reason) {
 434       *reason = "Features are disabled upon full but not preliminary GPU info.";
 435     }
 436     return false;
 437   }
 438
 439   if (blacklisted_features_.size() == gpu::NUMBER_OF_GPU_FEATURE_TYPES) {
 440     // On Linux, we use cached GL strings to make blacklist decsions at browser
 441     // startup time. We need to launch the GPU process to validate these
 442     // strings even if all features are blacklisted. If all GPU features are
 443     // disabled, the GPU process will only initialize GL bindings, create a GL
 444     // context, and collect full GPU info.
 445 #if !defined(OS_LINUX)
 446     if (reason) {
 447       *reason = "All GPU features are blacklisted.";
 448     }
 449     return false;
 450 #endif
 451   }
 452
 453   return true;
 454 }
 455
 456 void GpuDataManagerImplPrivate::RequestCompleteGpuInfoIfNeeded() {
 457   if (complete_gpu_info_already_requested_ || gpu_info_.finalized)
 458     return;
 459   complete_gpu_info_already_requested_ = true;
 460
 461   GpuProcessHost::SendOnIO(
 462 #if defined(OS_WIN)
 463       GpuProcessHost::GPU_PROCESS_KIND_UNSANDBOXED,
 464 #else
 465       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 466 #endif
 467       CAUSE_FOR_GPU_LAUNCH_GPUDATAMANAGER_REQUESTCOMPLETEGPUINFOIFNEEDED,
 468       new GpuMsg_CollectGraphicsInfo());
 469 }
 470
 471 bool GpuDataManagerImplPrivate::IsCompleteGpuInfoAvailable() const {
 472   return gpu_info_.finalized;
 473 }
 474
 475 void GpuDataManagerImplPrivate::RequestVideoMemoryUsageStatsUpdate() const {
 476   GpuProcessHost::SendOnIO(
 477       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 478       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 479       new GpuMsg_GetVideoMemoryUsageStats());
 480 }
 481
 482 bool GpuDataManagerImplPrivate::ShouldUseSwiftShader() const {
 483   return use_swiftshader_;
 484 }
 485
 486 void GpuDataManagerImplPrivate::RegisterSwiftShaderPath(
 487     const base::FilePath& path) {
 488   swiftshader_path_ = path;
 489   EnableSwiftShaderIfNecessary();
 490 }
 491
 492 void GpuDataManagerImplPrivate::AddObserver(GpuDataManagerObserver* observer) {
 493   GpuDataManagerImpl::UnlockedSession session(owner_);
 494   observer_list_->AddObserver(observer);
 495 }
 496
 497 void GpuDataManagerImplPrivate::RemoveObserver(
 498     GpuDataManagerObserver* observer) {
 499   GpuDataManagerImpl::UnlockedSession session(owner_);
 500   observer_list_->RemoveObserver(observer);
 501 }
 502
 503 void GpuDataManagerImplPrivate::UnblockDomainFrom3DAPIs(const GURL& url) {
 504   // This method must do two things:
 505   //
 506   //  1. If the specific domain is blocked, then unblock it.
 507   //
 508   //  2. Reset our notion of how many GPU resets have occurred recently.
 509   //     This is necessary even if the specific domain was blocked.
 510   //     Otherwise, if we call Are3DAPIsBlocked with the same domain right
 511   //     after unblocking it, it will probably still be blocked because of
 512   //     the recent GPU reset caused by that domain.
 513   //
 514   // These policies could be refined, but at a certain point the behavior
 515   // will become difficult to explain.
 516   std::string domain = GetDomainFromURL(url);
 517
 518   blocked_domains_.erase(domain);
 519   timestamps_of_gpu_resets_.clear();
 520 }
 521
 522 void GpuDataManagerImplPrivate::DisableGpuWatchdog() {
 523   GpuProcessHost::SendOnIO(
 524       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 525       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 526       new GpuMsg_DisableWatchdog);
 527 }
 528
 529 void GpuDataManagerImplPrivate::SetGLStrings(const std::string& gl_vendor,
 530                                              const std::string& gl_renderer,
 531                                              const std::string& gl_version) {
 532   if (gl_vendor.empty() && gl_renderer.empty() && gl_version.empty())
 533     return;
 534
 535   // If GPUInfo already got GL strings, do nothing.  This is for the rare
 536   // situation where GPU process collected GL strings before this call.
 537   if (!gpu_info_.gl_vendor.empty() ||
 538       !gpu_info_.gl_renderer.empty() ||
 539       !gpu_info_.gl_version_string.empty())
 540     return;
 541
 542   gpu::GPUInfo gpu_info = gpu_info_;
 543
 544   gpu_info.gl_vendor = gl_vendor;
 545   gpu_info.gl_renderer = gl_renderer;
 546   gpu_info.gl_version_string = gl_version;
 547
 548   gpu::CollectDriverInfoGL(&gpu_info);
 549
 550   UpdateGpuInfo(gpu_info);
 551   UpdateGpuSwitchingManager(gpu_info);
 552   UpdatePreliminaryBlacklistedFeatures();
 553 }
 554
 555 void GpuDataManagerImplPrivate::GetGLStrings(std::string* gl_vendor,
 556                                              std::string* gl_renderer,
 557                                              std::string* gl_version) {
 558   DCHECK(gl_vendor && gl_renderer && gl_version);
 559
 560   *gl_vendor = gpu_info_.gl_vendor;
 561   *gl_renderer = gpu_info_.gl_renderer;
 562   *gl_version = gpu_info_.gl_version_string;
 563 }
 564
 565 void GpuDataManagerImplPrivate::Initialize() {
 566   TRACE_EVENT0("startup", "GpuDataManagerImpl::Initialize");
 567   if (finalized_) {
 568     DVLOG(0) << "GpuDataManagerImpl marked as finalized; skipping Initialize";
 569     return;
 570   }
 571
 572   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 573   if (command_line->HasSwitch(switches::kSkipGpuDataLoading))
 574     return;
 575
 576   gpu::GPUInfo gpu_info;
 577   if (command_line->GetSwitchValueASCII(
 578           switches::kUseGL) == gfx::kGLImplementationOSMesaName) {
 579     // If using the OSMesa GL implementation, use fake vendor and device ids to
 580     // make sure it never gets blacklisted. This is better than simply
 581     // cancelling GPUInfo gathering as it allows us to proceed with loading the
 582     // blacklist below which may have non-device specific entries we want to
 583     // apply anyways (e.g., OS version blacklisting).
 584     gpu_info.gpu.vendor_id = 0xffff;
 585     gpu_info.gpu.device_id = 0xffff;
 586
 587     // Also declare the driver_vendor to be osmesa to be able to specify
 588     // exceptions based on driver_vendor==osmesa for some blacklist rules.
 589     gpu_info.driver_vendor = gfx::kGLImplementationOSMesaName;
 590   } else {
 591     TRACE_EVENT0("startup",
 592       "GpuDataManagerImpl::Initialize:CollectBasicGraphicsInfo");
 593     gpu::CollectBasicGraphicsInfo(&gpu_info);
 594   }
 595 #if defined(ARCH_CPU_X86_FAMILY)
 596   if (!gpu_info.gpu.vendor_id || !gpu_info.gpu.device_id)
 597     gpu_info.finalized = true;
 598 #endif
 599
 600   std::string gpu_blacklist_string;
 601   std::string gpu_driver_bug_list_string;
 602   if (!command_line->HasSwitch(switches::kIgnoreGpuBlacklist) &&
 603       !command_line->HasSwitch(switches::kUseGpuInTests)) {
 604     gpu_blacklist_string = gpu::kSoftwareRenderingListJson;
 605   }
 606   if (!command_line->HasSwitch(switches::kDisableGpuDriverBugWorkarounds)) {
 607     gpu_driver_bug_list_string = gpu::kGpuDriverBugListJson;
 608   }
 609   InitializeImpl(gpu_blacklist_string,
 610                  gpu_driver_bug_list_string,
 611                  gpu_info);
 612 }
 613
 614 void GpuDataManagerImplPrivate::UpdateGpuInfoHelper() {
 615   GetContentClient()->SetGpuInfo(gpu_info_);
 616
 617   if (gpu_blacklist_) {
 618     std::set<int> features = gpu_blacklist_->MakeDecision(
 619         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 620     if (update_histograms_)
 621       UpdateStats(gpu_info_, gpu_blacklist_.get(), features);
 622
 623     UpdateBlacklistedFeatures(features);
 624   }
 625   gpu_driver_bugs_ =
 626       gpu::WorkaroundsFromCommandLine(CommandLine::ForCurrentProcess());
 627   if (gpu_driver_bugs_.empty() && gpu_driver_bug_list_) {
 628     gpu_driver_bugs_ = gpu_driver_bug_list_->MakeDecision(
 629         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 630   }
 631   AdjustGpuSwitchingOption(&gpu_driver_bugs_);
 632
 633   // We have to update GpuFeatureType before notify all the observers.
 634   NotifyGpuInfoUpdate();
 635 }
 636
 637 void GpuDataManagerImplPrivate::UpdateGpuInfo(const gpu::GPUInfo& gpu_info) {
 638   // No further update of gpu_info if falling back to SwiftShader.
 639   if (use_swiftshader_)
 640     return;
 641
 642   gpu::MergeGPUInfo(&gpu_info_, gpu_info);
 643   complete_gpu_info_already_requested_ =
 644       complete_gpu_info_already_requested_ || gpu_info_.finalized;
 645
 646   UpdateGpuInfoHelper();
 647 }
 648
 649 void GpuDataManagerImplPrivate::UpdateVideoMemoryUsageStats(
 650     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
 651   GpuDataManagerImpl::UnlockedSession session(owner_);
 652   observer_list_->Notify(&GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate,
 653                          video_memory_usage_stats);
 654 }
 655
 656 void GpuDataManagerImplPrivate::AppendRendererCommandLine(
 657     CommandLine* command_line) const {
 658   DCHECK(command_line);
 659
 660   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) &&
 661       !command_line->HasSwitch(switches::kDisableAcceleratedCompositing))
 662     command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
 663   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
 664       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode))
 665     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 666 #if defined(ENABLE_WEBRTC)
 667   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 668       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding))
 669     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 670 #endif
 671
 672   if (use_software_compositor_ &&
 673       !command_line->HasSwitch(switches::kEnableSoftwareCompositing))
 674     command_line->AppendSwitch(switches::kEnableSoftwareCompositing);
 675
 676 #if defined(USE_AURA)
 677   if (!CanUseGpuBrowserCompositor())
 678     command_line->AppendSwitch(switches::kDisableGpuCompositing);
 679 #endif
 680 }
 681
 682 void GpuDataManagerImplPrivate::AppendGpuCommandLine(
 683     CommandLine* command_line) const {
 684   DCHECK(command_line);
 685
 686   std::string use_gl =
 687       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kUseGL);
 688   base::FilePath swiftshader_path =
 689       CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 690           switches::kSwiftShaderPath);
 691   if (gpu_driver_bugs_.find(gpu::DISABLE_D3D11) != gpu_driver_bugs_.end())
 692     command_line->AppendSwitch(switches::kDisableD3D11);
 693   if (use_swiftshader_) {
 694     command_line->AppendSwitchASCII(switches::kUseGL, "swiftshader");
 695     if (swiftshader_path.empty())
 696       swiftshader_path = swiftshader_path_;
 697   } else if ((IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL) ||
 698               IsFeatureBlacklisted(
 699                   gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) ||
 700               IsFeatureBlacklisted(
 701                   gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)) &&
 702       (use_gl == "any")) {
 703     command_line->AppendSwitchASCII(
 704         switches::kUseGL, gfx::kGLImplementationOSMesaName);
 705   } else if (!use_gl.empty()) {
 706     command_line->AppendSwitchASCII(switches::kUseGL, use_gl);
 707   }
 708   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus())
 709     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "true");
 710   else
 711     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "false");
 712
 713   if (!swiftshader_path.empty()) {
 714     command_line->AppendSwitchPath(switches::kSwiftShaderPath,
 715                                    swiftshader_path);
 716   }
 717
 718   if (!gpu_driver_bugs_.empty()) {
 719     command_line->AppendSwitchASCII(switches::kGpuDriverBugWorkarounds,
 720                                     IntSetToString(gpu_driver_bugs_));
 721   }
 722
 723   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
 724       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
 725     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 726   }
 727 #if defined(ENABLE_WEBRTC)
 728   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 729       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding)) {
 730     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 731   }
 732 #endif
 733
 734   // Pass GPU and driver information to GPU process. We try to avoid full GPU
 735   // info collection at GPU process startup, but we need gpu vendor_id,
 736   // device_id, driver_vendor, driver_version for deciding whether we need to
 737   // collect full info (on Linux) and for crash reporting purpose.
 738   command_line->AppendSwitchASCII(switches::kGpuVendorID,
 739       base::StringPrintf("0x%04x", gpu_info_.gpu.vendor_id));
 740   command_line->AppendSwitchASCII(switches::kGpuDeviceID,
 741       base::StringPrintf("0x%04x", gpu_info_.gpu.device_id));
 742   command_line->AppendSwitchASCII(switches::kGpuDriverVendor,
 743       gpu_info_.driver_vendor);
 744   command_line->AppendSwitchASCII(switches::kGpuDriverVersion,
 745       gpu_info_.driver_version);
 746 }
 747
 748 void GpuDataManagerImplPrivate::AppendPluginCommandLine(
 749     CommandLine* command_line) const {
 750   DCHECK(command_line);
 751
 752 #if defined(OS_MACOSX)
 753   // TODO(jbauman): Add proper blacklist support for core animation plugins so
 754   // special-casing this video card won't be necessary. See
 755   // http://crbug.com/134015
 756   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) ||
 757       CommandLine::ForCurrentProcess()->HasSwitch(
 758           switches::kDisableAcceleratedCompositing)) {
 759     if (!command_line->HasSwitch(
 760            switches::kDisableCoreAnimationPlugins))
 761       command_line->AppendSwitch(
 762           switches::kDisableCoreAnimationPlugins);
 763   }
 764 #endif
 765 }
 766
 767 void GpuDataManagerImplPrivate::UpdateRendererWebPrefs(
 768     WebPreferences* prefs) const {
 769   DCHECK(prefs);
 770
 771   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING))
 772     prefs->accelerated_compositing_enabled = false;
 773   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL)) {
 774     prefs->experimental_webgl_enabled = false;
 775     prefs->pepper_3d_enabled = false;
 776   }
 777   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH3D))
 778     prefs->flash_3d_enabled = false;
 779   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D)) {
 780     prefs->flash_stage3d_enabled = false;
 781     prefs->flash_stage3d_baseline_enabled = false;
 782   }
 783   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D_BASELINE))
 784     prefs->flash_stage3d_baseline_enabled = false;
 785   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS))
 786     prefs->accelerated_2d_canvas_enabled = false;
 787   if (IsDriverBugWorkaroundActive(gpu::DISABLE_MULTISAMPLING) ||
 788       (IsDriverBugWorkaroundActive(gpu::DISABLE_MULTIMONITOR_MULTISAMPLING) &&
 789           display_count_ > 1))
 790     prefs->gl_multisampling_enabled = false;
 791   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_3D_CSS)) {
 792     prefs->accelerated_compositing_for_3d_transforms_enabled = false;
 793     prefs->accelerated_compositing_for_animation_enabled = false;
 794   }
 795   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO))
 796     prefs->accelerated_compositing_for_video_enabled = false;
 797
 798   // Accelerated video and animation are slower than regular when using
 799   // SwiftShader. 3D CSS or Pepper 3D may also be too slow to be worthwhile.
 800   if (ShouldUseSwiftShader()) {
 801     prefs->accelerated_compositing_for_video_enabled = false;
 802     prefs->accelerated_compositing_for_animation_enabled = false;
 803     prefs->accelerated_compositing_for_3d_transforms_enabled = false;
 804     prefs->accelerated_compositing_for_plugins_enabled = false;
 805     prefs->pepper_3d_enabled = false;
 806   }
 807
 808   if (use_software_compositor_) {
 809     prefs->force_compositing_mode = true;
 810     prefs->accelerated_compositing_enabled = true;
 811     prefs->accelerated_compositing_for_3d_transforms_enabled = true;
 812     prefs->accelerated_compositing_for_animation_enabled = true;
 813     prefs->accelerated_compositing_for_plugins_enabled = true;
 814     prefs->accelerated_compositing_for_video_enabled = true;
 815   }
 816
 817 #if defined(USE_AURA)
 818   if (!CanUseGpuBrowserCompositor()) {
 819     prefs->accelerated_2d_canvas_enabled = false;
 820     prefs->pepper_3d_enabled = false;
 821   }
 822 #endif
 823
 824   if (!IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
 825       !CommandLine::ForCurrentProcess()->HasSwitch(
 826           switches::kDisableAcceleratedVideoDecode)) {
 827     prefs->pepper_accelerated_video_decode_enabled = true;
 828   }
 829 }
 830
 831 void GpuDataManagerImplPrivate::DisableHardwareAcceleration() {
 832   card_blacklisted_ = true;
 833
 834   for (int i = 0; i < gpu::NUMBER_OF_GPU_FEATURE_TYPES; ++i)
 835     blacklisted_features_.insert(i);
 836
 837   EnableSwiftShaderIfNecessary();
 838   NotifyGpuInfoUpdate();
 839 }
 840
 841 std::string GpuDataManagerImplPrivate::GetBlacklistVersion() const {
 842   if (gpu_blacklist_)
 843     return gpu_blacklist_->version();
 844   return "0";
 845 }
 846
 847 std::string GpuDataManagerImplPrivate::GetDriverBugListVersion() const {
 848   if (gpu_driver_bug_list_)
 849     return gpu_driver_bug_list_->version();
 850   return "0";
 851 }
 852
 853 void GpuDataManagerImplPrivate::GetBlacklistReasons(
 854     base::ListValue* reasons) const {
 855   if (gpu_blacklist_)
 856     gpu_blacklist_->GetReasons(reasons, "disabledFeatures");
 857   if (gpu_driver_bug_list_)
 858     gpu_driver_bug_list_->GetReasons(reasons, "workarounds");
 859 }
 860
 861 void GpuDataManagerImplPrivate::GetDriverBugWorkarounds(
 862     base::ListValue* workarounds) const {
 863   for (std::set<int>::const_iterator it = gpu_driver_bugs_.begin();
 864        it != gpu_driver_bugs_.end(); ++it) {
 865     workarounds->AppendString(
 866         gpu::GpuDriverBugWorkaroundTypeToString(
 867             static_cast<gpu::GpuDriverBugWorkaroundType>(*it)));
 868   }
 869 }
 870
 871 void GpuDataManagerImplPrivate::AddLogMessage(
 872     int level, const std::string& header, const std::string& message) {
 873   log_messages_.push_back(LogMessage(level, header, message));
 874 }
 875
 876 void GpuDataManagerImplPrivate::ProcessCrashed(
 877     base::TerminationStatus exit_code) {
 878   if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
 879     // Unretained is ok, because it's posted to UI thread, the thread
 880     // where the singleton GpuDataManagerImpl lives until the end.
 881     BrowserThread::PostTask(
 882         BrowserThread::UI,
 883         FROM_HERE,
 884         base::Bind(&GpuDataManagerImpl::ProcessCrashed,
 885                    base::Unretained(owner_),
 886                    exit_code));
 887     return;
 888   }
 889   {
 890     GpuDataManagerImpl::UnlockedSession session(owner_);
 891     observer_list_->Notify(
 892         &GpuDataManagerObserver::OnGpuProcessCrashed, exit_code);
 893   }
 894 }
 895
 896 base::ListValue* GpuDataManagerImplPrivate::GetLogMessages() const {
 897   base::ListValue* value = new base::ListValue;
 898   for (size_t ii = 0; ii < log_messages_.size(); ++ii) {
 899     base::DictionaryValue* dict = new base::DictionaryValue();
 900     dict->SetInteger("level", log_messages_[ii].level);
 901     dict->SetString("header", log_messages_[ii].header);
 902     dict->SetString("message", log_messages_[ii].message);
 903     value->Append(dict);
 904   }
 905   return value;
 906 }
 907
 908 void GpuDataManagerImplPrivate::HandleGpuSwitch() {
 909   // Check if the active gpu has changed.
 910   uint32 vendor_id, device_id;
 911   gpu::GPUInfo::GPUDevice* active = NULL;
 912   gpu::GPUInfo::GPUDevice* old_active = NULL;
 913   if (gpu::CollectGpuID(&vendor_id, &device_id) == gpu::kGpuIDSuccess) {
 914     if (gpu_info_.gpu.active)
 915       old_active = &gpu_info_.gpu;
 916     if (gpu_info_.gpu.vendor_id == vendor_id &&
 917         gpu_info_.gpu.device_id == device_id)
 918       active = &gpu_info_.gpu;
 919     for (size_t ii = 0; ii < gpu_info_.secondary_gpus.size(); ++ii) {
 920       gpu::GPUInfo::GPUDevice& gpu = gpu_info_.secondary_gpus[ii];
 921       if (gpu.active)
 922         old_active = &gpu;
 923       if (gpu.vendor_id == vendor_id && gpu.device_id == device_id)
 924         active = &gpu;
 925     }
 926     DCHECK(active && old_active);
 927     if (active != old_active) {  // A different GPU is used.
 928       old_active->active = false;
 929       active->active = true;
 930       UpdateGpuInfoHelper();
 931     }
 932   }
 933   {
 934     GpuDataManagerImpl::UnlockedSession session(owner_);
 935     observer_list_->Notify(&GpuDataManagerObserver::OnGpuSwitching);
 936   }
 937 }
 938
 939 bool GpuDataManagerImplPrivate::CanUseGpuBrowserCompositor() const {
 940   return !ShouldUseSwiftShader() &&
 941          !IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) &&
 942          !IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FORCE_COMPOSITING_MODE);
 943 }
 944
 945 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIs(
 946     const GURL& url, GpuDataManagerImpl::DomainGuilt guilt) {
 947   BlockDomainFrom3DAPIsAtTime(url, guilt, base::Time::Now());
 948 }
 949
 950 bool GpuDataManagerImplPrivate::Are3DAPIsBlocked(const GURL& url,
 951                                                  int render_process_id,
 952                                                  int render_view_id,
 953                                                  ThreeDAPIType requester) {
 954   bool blocked = Are3DAPIsBlockedAtTime(url, base::Time::Now()) !=
 955       GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
 956   if (blocked) {
 957     // Unretained is ok, because it's posted to UI thread, the thread
 958     // where the singleton GpuDataManagerImpl lives until the end.
 959     BrowserThread::PostTask(
 960         BrowserThread::UI, FROM_HERE,
 961         base::Bind(&GpuDataManagerImpl::Notify3DAPIBlocked,
 962                    base::Unretained(owner_), url, render_process_id,
 963                    render_view_id, requester));
 964   }
 965
 966   return blocked;
 967 }
 968
 969 void GpuDataManagerImplPrivate::DisableDomainBlockingFor3DAPIsForTesting() {
 970   domain_blocking_enabled_ = false;
 971 }
 972
 973 // static
 974 GpuDataManagerImplPrivate* GpuDataManagerImplPrivate::Create(
 975     GpuDataManagerImpl* owner) {
 976   return new GpuDataManagerImplPrivate(owner);
 977 }
 978
 979 GpuDataManagerImplPrivate::GpuDataManagerImplPrivate(
 980     GpuDataManagerImpl* owner)
 981     : complete_gpu_info_already_requested_(false),
 982       observer_list_(new GpuDataManagerObserverList),
 983       use_swiftshader_(false),
 984       card_blacklisted_(false),
 985       update_histograms_(true),
 986       window_count_(0),
 987       domain_blocking_enabled_(true),
 988       owner_(owner),
 989       display_count_(0),
 990       gpu_process_accessible_(true),
 991       use_software_compositor_(false),
 992       finalized_(false) {
 993   DCHECK(owner_);
 994   CommandLine* command_line = CommandLine::ForCurrentProcess();
 995   if (command_line->HasSwitch(switches::kDisableAcceleratedCompositing)) {
 996     command_line->AppendSwitch(switches::kDisableAccelerated2dCanvas);
 997     command_line->AppendSwitch(switches::kDisableAcceleratedLayers);
 998   }
 999   if (command_line->HasSwitch(switches::kDisableGpu))
1000     DisableHardwareAcceleration();
1001   if (command_line->HasSwitch(switches::kEnableSoftwareCompositing))
1002     use_software_compositor_ = true;
1003   // TODO(jbauman): enable for Chrome OS
1004 #if (defined(USE_AURA) && !defined(OS_CHROMEOS)) || defined(OS_MACOSX)
1005   use_software_compositor_ = true;
1006 #endif
1007
1008 #if defined(OS_MACOSX)
1009   CGGetActiveDisplayList (0, NULL, &display_count_);
1010   CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
1011 #endif  // OS_MACOSX
1012
1013   // For testing only.
1014   if (command_line->HasSwitch(switches::kDisableDomainBlockingFor3DAPIs)) {
1015     domain_blocking_enabled_ = false;
1016   }
1017 }
1018
1019 GpuDataManagerImplPrivate::~GpuDataManagerImplPrivate() {
1020 #if defined(OS_MACOSX)
1021   CGDisplayRemoveReconfigurationCallback(DisplayReconfigCallback, owner_);
1022 #endif
1023 }
1024
1025 void GpuDataManagerImplPrivate::InitializeImpl(
1026     const std::string& gpu_blacklist_json,
1027     const std::string& gpu_driver_bug_list_json,
1028     const gpu::GPUInfo& gpu_info) {
1029   const bool log_gpu_control_list_decisions =
1030       CommandLine::ForCurrentProcess()->HasSwitch(
1031           switches::kLogGpuControlListDecisions);
1032
1033   if (!gpu_blacklist_json.empty()) {
1034     gpu_blacklist_.reset(gpu::GpuBlacklist::Create());
1035     if (log_gpu_control_list_decisions)
1036       gpu_blacklist_->enable_control_list_logging("gpu_blacklist");
1037     bool success = gpu_blacklist_->LoadList(
1038         gpu_blacklist_json, gpu::GpuControlList::kCurrentOsOnly);
1039     DCHECK(success);
1040   }
1041   if (!gpu_driver_bug_list_json.empty()) {
1042     gpu_driver_bug_list_.reset(gpu::GpuDriverBugList::Create());
1043     if (log_gpu_control_list_decisions)
1044       gpu_driver_bug_list_->enable_control_list_logging("gpu_driver_bug_list");
1045     bool success = gpu_driver_bug_list_->LoadList(
1046         gpu_driver_bug_list_json, gpu::GpuControlList::kCurrentOsOnly);
1047     DCHECK(success);
1048   }
1049
1050   gpu_info_ = gpu_info;
1051   UpdateGpuInfo(gpu_info);
1052   UpdateGpuSwitchingManager(gpu_info);
1053   UpdatePreliminaryBlacklistedFeatures();
1054
1055 #if defined(OS_ANDROID)
1056   ApplyAndroidWorkarounds(
1057       gpu_info, CommandLine::ForCurrentProcess(), &gpu_driver_bugs_);
1058 #endif  // OS_ANDROID
1059 }
1060
1061 void GpuDataManagerImplPrivate::UpdateBlacklistedFeatures(
1062     const std::set<int>& features) {
1063   CommandLine* command_line = CommandLine::ForCurrentProcess();
1064   blacklisted_features_ = features;
1065
1066   // Force disable using the GPU for these features, even if they would
1067   // otherwise be allowed.
1068   if (card_blacklisted_ ||
1069       command_line->HasSwitch(switches::kBlacklistAcceleratedCompositing)) {
1070     blacklisted_features_.insert(
1071         gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING);
1072   }
1073   if (card_blacklisted_ ||
1074       command_line->HasSwitch(switches::kBlacklistWebGL)) {
1075     blacklisted_features_.insert(gpu::GPU_FEATURE_TYPE_WEBGL);
1076   }
1077
1078   EnableSwiftShaderIfNecessary();
1079 }
1080
1081 void GpuDataManagerImplPrivate::UpdatePreliminaryBlacklistedFeatures() {
1082   preliminary_blacklisted_features_ = blacklisted_features_;
1083 }
1084
1085 void GpuDataManagerImplPrivate::UpdateGpuSwitchingManager(
1086     const gpu::GPUInfo& gpu_info) {
1087   ui::GpuSwitchingManager::GetInstance()->SetGpuCount(
1088       gpu_info.secondary_gpus.size() + 1);
1089
1090   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus()) {
1091     if (gpu_driver_bugs_.count(gpu::FORCE_DISCRETE_GPU) == 1)
1092       ui::GpuSwitchingManager::GetInstance()->ForceUseOfDiscreteGpu();
1093     else if (gpu_driver_bugs_.count(gpu::FORCE_INTEGRATED_GPU) == 1)
1094       ui::GpuSwitchingManager::GetInstance()->ForceUseOfIntegratedGpu();
1095   }
1096 }
1097
1098 void GpuDataManagerImplPrivate::NotifyGpuInfoUpdate() {
1099   observer_list_->Notify(&GpuDataManagerObserver::OnGpuInfoUpdate);
1100 }
1101
1102 void GpuDataManagerImplPrivate::EnableSwiftShaderIfNecessary() {
1103   if (!GpuAccessAllowed(NULL) ||
1104       blacklisted_features_.count(gpu::GPU_FEATURE_TYPE_WEBGL)) {
1105     if (!swiftshader_path_.empty() &&
1106         !CommandLine::ForCurrentProcess()->HasSwitch(
1107              switches::kDisableSoftwareRasterizer))
1108       use_swiftshader_ = true;
1109   }
1110 }
1111
1112 std::string GpuDataManagerImplPrivate::GetDomainFromURL(
1113     const GURL& url) const {
1114   // For the moment, we just use the host, or its IP address, as the
1115   // entry in the set, rather than trying to figure out the top-level
1116   // domain. This does mean that a.foo.com and b.foo.com will be
1117   // treated independently in the blocking of a given domain, but it
1118   // would require a third-party library to reliably figure out the
1119   // top-level domain from a URL.
1120   if (!url.has_host()) {
1121     return std::string();
1122   }
1123
1124   return url.host();
1125 }
1126
1127 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIsAtTime(
1128     const GURL& url,
1129     GpuDataManagerImpl::DomainGuilt guilt,
1130     base::Time at_time) {
1131   if (!domain_blocking_enabled_)
1132     return;
1133
1134   std::string domain = GetDomainFromURL(url);
1135
1136   DomainBlockEntry& entry = blocked_domains_[domain];
1137   entry.last_guilt = guilt;
1138   timestamps_of_gpu_resets_.push_back(at_time);
1139 }
1140
1141 GpuDataManagerImpl::DomainBlockStatus
1142 GpuDataManagerImplPrivate::Are3DAPIsBlockedAtTime(
1143     const GURL& url, base::Time at_time) const {
1144   if (!domain_blocking_enabled_)
1145     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1146
1147   // Note: adjusting the policies in this code will almost certainly
1148   // require adjusting the associated unit tests.
1149   std::string domain = GetDomainFromURL(url);
1150
1151   DomainBlockMap::const_iterator iter = blocked_domains_.find(domain);
1152   if (iter != blocked_domains_.end()) {
1153     // Err on the side of caution, and assume that if a particular
1154     // domain shows up in the block map, it's there for a good
1155     // reason and don't let its presence there automatically expire.
1156
1157     UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1158                               BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
1159                               BLOCK_STATUS_MAX);
1160
1161     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_BLOCKED;
1162   }
1163
1164   // Look at the timestamps of the recent GPU resets to see if there are
1165   // enough within the threshold which would cause us to blacklist all
1166   // domains. This doesn't need to be overly precise -- if time goes
1167   // backward due to a system clock adjustment, that's fine.
1168   //
1169   // TODO(kbr): make this pay attention to the TDR thresholds in the
1170   // Windows registry, but make sure it continues to be testable.
1171   {
1172     std::list<base::Time>::iterator iter = timestamps_of_gpu_resets_.begin();
1173     int num_resets_within_timeframe = 0;
1174     while (iter != timestamps_of_gpu_resets_.end()) {
1175       base::Time time = *iter;
1176       base::TimeDelta delta_t = at_time - time;
1177
1178       // If this entry has "expired", just remove it.
1179       if (delta_t.InMilliseconds() > kBlockAllDomainsMs) {
1180         iter = timestamps_of_gpu_resets_.erase(iter);
1181         continue;
1182       }
1183
1184       ++num_resets_within_timeframe;
1185       ++iter;
1186     }
1187
1188     if (num_resets_within_timeframe >= kNumResetsWithinDuration) {
1189       UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1190                                 BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
1191                                 BLOCK_STATUS_MAX);
1192
1193       return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_ALL_DOMAINS_BLOCKED;
1194     }
1195   }
1196
1197   UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1198                             BLOCK_STATUS_NOT_BLOCKED,
1199                             BLOCK_STATUS_MAX);
1200
1201   return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1202 }
1203
1204 int64 GpuDataManagerImplPrivate::GetBlockAllDomainsDurationInMs() const {
1205   return kBlockAllDomainsMs;
1206 }
1207
1208 void GpuDataManagerImplPrivate::Notify3DAPIBlocked(const GURL& url,
1209                                                    int render_process_id,
1210                                                    int render_view_id,
1211                                                    ThreeDAPIType requester) {
1212   GpuDataManagerImpl::UnlockedSession session(owner_);
1213   observer_list_->Notify(&GpuDataManagerObserver::DidBlock3DAPIs,
1214                          url, render_process_id, render_view_id, requester);
1215 }
1216
1217 void GpuDataManagerImplPrivate::OnGpuProcessInitFailure() {
1218   gpu_process_accessible_ = false;
1219   gpu_info_.finalized = true;
1220   complete_gpu_info_already_requested_ = true;
1221   // Some observers might be waiting.
1222   NotifyGpuInfoUpdate();
1223 }
1224
1225 }  // namespace content