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::string vendor(StringToLowerASCII(gpu_info.gl_vendor));
 239   std::string renderer(StringToLowerASCII(gpu_info.gl_renderer));
 240   bool is_img =
 241       gpu_info.gl_vendor.find("Imagination") != std::string::npos;
 242
 243   gfx::DeviceDisplayInfo info;
 244   int default_tile_size = 256;
 245
 246   // TODO(epenner): Now that this is somewhat generic, maybe we can
 247   // unify this for all platforms (http://crbug.com/159524)
 248
 249   bool real_size_supported = true;
 250   int display_width = info.GetPhysicalDisplayWidth();
 251   int display_height = info.GetPhysicalDisplayHeight();
 252   if (display_width == 0 || display_height == 0) {
 253     real_size_supported = false;
 254     display_width = info.GetDisplayWidth();
 255     display_height = info.GetDisplayHeight();
 256   }
 257
 258   int portrait_width = std::min(display_width, display_height);
 259   int landscape_width = std::max(display_width, display_height);
 260
 261   if (real_size_supported) {
 262     // Maximum HD dimensions should be 768x1280
 263     // Maximum FHD dimensions should be 1200x1920
 264     if (portrait_width > 768 || landscape_width > 1280)
 265        default_tile_size = 384;
 266     if (portrait_width > 1200 || landscape_width > 1920)
 267        default_tile_size = 512;
 268
 269     // Adjust for some resolutions that barely straddle an extra
 270     // tile when in portrait mode. This helps worst case scroll/raster
 271     // by not needing a full extra tile for each row.
 272     if (default_tile_size == 256 && portrait_width == 768)
 273       default_tile_size += 32;
 274     if (default_tile_size == 384 && portrait_width == 1200)
 275       default_tile_size += 32;
 276   } else {
 277     // We don't know the exact resolution due to screen controls etc.
 278     // So this just estimates the values above using tile counts.
 279     int numTiles = (display_width * display_height) / (256 * 256);
 280     if (numTiles > 16)
 281       default_tile_size = 384;
 282     if (numTiles >= 40)
 283       default_tile_size = 512;
 284   }
 285
 286   // IMG: Fast async texture uploads only work with non-power-of-two,
 287   // but still multiple-of-eight sizes.
 288   // http://crbug.com/168099
 289   if (is_img)
 290     default_tile_size -= 8;
 291
 292   // Set the command line if it isn't already set and we changed
 293   // the default tile size.
 294   if (default_tile_size != 256 &&
 295       !command_line->HasSwitch(switches::kDefaultTileWidth) &&
 296       !command_line->HasSwitch(switches::kDefaultTileHeight)) {
 297     std::stringstream size;
 298     size << default_tile_size;
 299     command_line->AppendSwitchASCII(
 300         switches::kDefaultTileWidth, size.str());
 301     command_line->AppendSwitchASCII(
 302         switches::kDefaultTileHeight, size.str());
 303   }
 304 }
 305 #endif  // OS_ANDROID
 306
 307 // Overwrite force gpu workaround if a commandline switch exists.
 308 void AdjustGpuSwitchingOption(std::set<int>* workarounds) {
 309   DCHECK(workarounds);
 310   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 311   std::string option = command_line.GetSwitchValueASCII(
 312       switches::kGpuSwitching);
 313   if (option == switches::kGpuSwitchingOptionNameForceDiscrete) {
 314     workarounds->erase(gpu::FORCE_INTEGRATED_GPU);
 315     workarounds->insert(gpu::FORCE_DISCRETE_GPU);
 316   } else if (option == switches::kGpuSwitchingOptionNameForceIntegrated) {
 317     workarounds->erase(gpu::FORCE_DISCRETE_GPU);
 318     workarounds->insert(gpu::FORCE_INTEGRATED_GPU);
 319   }
 320 }
 321
 322 // Block all domains' use of 3D APIs for this many milliseconds if
 323 // approaching a threshold where system stability might be compromised.
 324 const int64 kBlockAllDomainsMs = 10000;
 325 const int kNumResetsWithinDuration = 1;
 326
 327 // Enums for UMA histograms.
 328 enum BlockStatusHistogram {
 329   BLOCK_STATUS_NOT_BLOCKED,
 330   BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
 331   BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
 332   BLOCK_STATUS_MAX
 333 };
 334
 335 }  // namespace anonymous
 336
 337 void GpuDataManagerImplPrivate::InitializeForTesting(
 338     const std::string& gpu_blacklist_json,
 339     const gpu::GPUInfo& gpu_info) {
 340   // This function is for testing only, so disable histograms.
 341   update_histograms_ = false;
 342
 343   // Prevent all further initialization.
 344   finalized_ = true;
 345
 346   InitializeImpl(gpu_blacklist_json, std::string(), gpu_info);
 347 }
 348
 349 bool GpuDataManagerImplPrivate::IsFeatureBlacklisted(int feature) const {
 350 #if defined(OS_CHROMEOS)
 351   if (feature == gpu::GPU_FEATURE_TYPE_PANEL_FITTING &&
 352       CommandLine::ForCurrentProcess()->HasSwitch(
 353           switches::kDisablePanelFitting)) {
 354     return true;
 355   }
 356 #endif  // OS_CHROMEOS
 357   if (use_swiftshader_) {
 358     // Skia's software rendering is probably more efficient than going through
 359     // software emulation of the GPU, so use that.
 360     if (feature == gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)
 361       return true;
 362     return false;
 363   }
 364
 365   return (blacklisted_features_.count(feature) == 1);
 366 }
 367
 368 bool GpuDataManagerImplPrivate::IsDriverBugWorkaroundActive(int feature) const {
 369   return (gpu_driver_bugs_.count(feature) == 1);
 370 }
 371
 372 size_t GpuDataManagerImplPrivate::GetBlacklistedFeatureCount() const {
 373   if (use_swiftshader_)
 374     return 1;
 375   return blacklisted_features_.size();
 376 }
 377
 378 void GpuDataManagerImplPrivate::SetDisplayCount(unsigned int display_count) {
 379   display_count_ = display_count;
 380 }
 381
 382 unsigned int GpuDataManagerImplPrivate::GetDisplayCount() const {
 383   return display_count_;
 384 }
 385
 386 gpu::GPUInfo GpuDataManagerImplPrivate::GetGPUInfo() const {
 387   return gpu_info_;
 388 }
 389
 390 void GpuDataManagerImplPrivate::GetGpuProcessHandles(
 391     const GpuDataManager::GetGpuProcessHandlesCallback& callback) const {
 392   GpuProcessHost::GetProcessHandles(callback);
 393 }
 394
 395 bool GpuDataManagerImplPrivate::GpuAccessAllowed(
 396     std::string* reason) const {
 397   if (use_swiftshader_)
 398     return true;
 399
 400   if (!gpu_process_accessible_) {
 401     if (reason) {
 402       *reason = "GPU process launch failed.";
 403     }
 404     return false;
 405   }
 406
 407   if (card_blacklisted_) {
 408     if (reason) {
 409       *reason = "GPU access is disabled ";
 410       CommandLine* command_line = CommandLine::ForCurrentProcess();
 411       if (command_line->HasSwitch(switches::kDisableGpu))
 412         *reason += "through commandline switch --disable-gpu.";
 413       else
 414         *reason += "in chrome://settings.";
 415     }
 416     return false;
 417   }
 418
 419   // We only need to block GPU process if more features are disallowed other
 420   // than those in the preliminary gpu feature flags because the latter work
 421   // through renderer commandline switches.
 422   std::set<int> features = preliminary_blacklisted_features_;
 423   gpu::MergeFeatureSets(&features, blacklisted_features_);
 424   if (features.size() > preliminary_blacklisted_features_.size()) {
 425     if (reason) {
 426       *reason = "Features are disabled upon full but not preliminary GPU info.";
 427     }
 428     return false;
 429   }
 430
 431   if (blacklisted_features_.size() == gpu::NUMBER_OF_GPU_FEATURE_TYPES) {
 432     // On Linux, we use cached GL strings to make blacklist decsions at browser
 433     // startup time. We need to launch the GPU process to validate these
 434     // strings even if all features are blacklisted. If all GPU features are
 435     // disabled, the GPU process will only initialize GL bindings, create a GL
 436     // context, and collect full GPU info.
 437 #if !defined(OS_LINUX)
 438     if (reason) {
 439       *reason = "All GPU features are blacklisted.";
 440     }
 441     return false;
 442 #endif
 443   }
 444
 445   return true;
 446 }
 447
 448 void GpuDataManagerImplPrivate::RequestCompleteGpuInfoIfNeeded() {
 449   if (complete_gpu_info_already_requested_ || gpu_info_.finalized)
 450     return;
 451   complete_gpu_info_already_requested_ = true;
 452
 453   GpuProcessHost::SendOnIO(
 454 #if defined(OS_WIN)
 455       GpuProcessHost::GPU_PROCESS_KIND_UNSANDBOXED,
 456 #else
 457       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 458 #endif
 459       CAUSE_FOR_GPU_LAUNCH_GPUDATAMANAGER_REQUESTCOMPLETEGPUINFOIFNEEDED,
 460       new GpuMsg_CollectGraphicsInfo());
 461 }
 462
 463 bool GpuDataManagerImplPrivate::IsCompleteGpuInfoAvailable() const {
 464   return gpu_info_.finalized;
 465 }
 466
 467 void GpuDataManagerImplPrivate::RequestVideoMemoryUsageStatsUpdate() const {
 468   GpuProcessHost::SendOnIO(
 469       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 470       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 471       new GpuMsg_GetVideoMemoryUsageStats());
 472 }
 473
 474 bool GpuDataManagerImplPrivate::ShouldUseSwiftShader() const {
 475   return use_swiftshader_;
 476 }
 477
 478 void GpuDataManagerImplPrivate::RegisterSwiftShaderPath(
 479     const base::FilePath& path) {
 480   swiftshader_path_ = path;
 481   EnableSwiftShaderIfNecessary();
 482 }
 483
 484 void GpuDataManagerImplPrivate::AddObserver(GpuDataManagerObserver* observer) {
 485   GpuDataManagerImpl::UnlockedSession session(owner_);
 486   observer_list_->AddObserver(observer);
 487 }
 488
 489 void GpuDataManagerImplPrivate::RemoveObserver(
 490     GpuDataManagerObserver* observer) {
 491   GpuDataManagerImpl::UnlockedSession session(owner_);
 492   observer_list_->RemoveObserver(observer);
 493 }
 494
 495 void GpuDataManagerImplPrivate::UnblockDomainFrom3DAPIs(const GURL& url) {
 496   // This method must do two things:
 497   //
 498   //  1. If the specific domain is blocked, then unblock it.
 499   //
 500   //  2. Reset our notion of how many GPU resets have occurred recently.
 501   //     This is necessary even if the specific domain was blocked.
 502   //     Otherwise, if we call Are3DAPIsBlocked with the same domain right
 503   //     after unblocking it, it will probably still be blocked because of
 504   //     the recent GPU reset caused by that domain.
 505   //
 506   // These policies could be refined, but at a certain point the behavior
 507   // will become difficult to explain.
 508   std::string domain = GetDomainFromURL(url);
 509
 510   blocked_domains_.erase(domain);
 511   timestamps_of_gpu_resets_.clear();
 512 }
 513
 514 void GpuDataManagerImplPrivate::DisableGpuWatchdog() {
 515   GpuProcessHost::SendOnIO(
 516       GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
 517       CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH,
 518       new GpuMsg_DisableWatchdog);
 519 }
 520
 521 void GpuDataManagerImplPrivate::SetGLStrings(const std::string& gl_vendor,
 522                                              const std::string& gl_renderer,
 523                                              const std::string& gl_version) {
 524   if (gl_vendor.empty() && gl_renderer.empty() && gl_version.empty())
 525     return;
 526
 527   // If GPUInfo already got GL strings, do nothing.  This is for the rare
 528   // situation where GPU process collected GL strings before this call.
 529   if (!gpu_info_.gl_vendor.empty() ||
 530       !gpu_info_.gl_renderer.empty() ||
 531       !gpu_info_.gl_version_string.empty())
 532     return;
 533
 534   gpu::GPUInfo gpu_info = gpu_info_;
 535
 536   gpu_info.gl_vendor = gl_vendor;
 537   gpu_info.gl_renderer = gl_renderer;
 538   gpu_info.gl_version_string = gl_version;
 539
 540   gpu::CollectDriverInfoGL(&gpu_info);
 541
 542   UpdateGpuInfo(gpu_info);
 543   UpdateGpuSwitchingManager(gpu_info);
 544   UpdatePreliminaryBlacklistedFeatures();
 545 }
 546
 547 void GpuDataManagerImplPrivate::GetGLStrings(std::string* gl_vendor,
 548                                              std::string* gl_renderer,
 549                                              std::string* gl_version) {
 550   DCHECK(gl_vendor && gl_renderer && gl_version);
 551
 552   *gl_vendor = gpu_info_.gl_vendor;
 553   *gl_renderer = gpu_info_.gl_renderer;
 554   *gl_version = gpu_info_.gl_version_string;
 555 }
 556
 557 void GpuDataManagerImplPrivate::Initialize() {
 558   TRACE_EVENT0("startup", "GpuDataManagerImpl::Initialize");
 559   if (finalized_) {
 560     DVLOG(0) << "GpuDataManagerImpl marked as finalized; skipping Initialize";
 561     return;
 562   }
 563
 564   const CommandLine* command_line = CommandLine::ForCurrentProcess();
 565   if (command_line->HasSwitch(switches::kSkipGpuDataLoading))
 566     return;
 567
 568   gpu::GPUInfo gpu_info;
 569   if (command_line->GetSwitchValueASCII(
 570           switches::kUseGL) == gfx::kGLImplementationOSMesaName) {
 571     // If using the OSMesa GL implementation, use fake vendor and device ids to
 572     // make sure it never gets blacklisted. This is better than simply
 573     // cancelling GPUInfo gathering as it allows us to proceed with loading the
 574     // blacklist below which may have non-device specific entries we want to
 575     // apply anyways (e.g., OS version blacklisting).
 576     gpu_info.gpu.vendor_id = 0xffff;
 577     gpu_info.gpu.device_id = 0xffff;
 578
 579     // Also declare the driver_vendor to be osmesa to be able to specify
 580     // exceptions based on driver_vendor==osmesa for some blacklist rules.
 581     gpu_info.driver_vendor = gfx::kGLImplementationOSMesaName;
 582   } else {
 583     TRACE_EVENT0("startup",
 584       "GpuDataManagerImpl::Initialize:CollectBasicGraphicsInfo");
 585     gpu::CollectBasicGraphicsInfo(&gpu_info);
 586   }
 587 #if defined(ARCH_CPU_X86_FAMILY)
 588   if (!gpu_info.gpu.vendor_id || !gpu_info.gpu.device_id)
 589     gpu_info.finalized = true;
 590 #endif
 591
 592   std::string gpu_blacklist_string;
 593   std::string gpu_driver_bug_list_string;
 594   if (!command_line->HasSwitch(switches::kIgnoreGpuBlacklist) &&
 595       !command_line->HasSwitch(switches::kUseGpuInTests)) {
 596     gpu_blacklist_string = gpu::kSoftwareRenderingListJson;
 597   }
 598   if (!command_line->HasSwitch(switches::kDisableGpuDriverBugWorkarounds)) {
 599     gpu_driver_bug_list_string = gpu::kGpuDriverBugListJson;
 600   }
 601   InitializeImpl(gpu_blacklist_string,
 602                  gpu_driver_bug_list_string,
 603                  gpu_info);
 604 }
 605
 606 void GpuDataManagerImplPrivate::UpdateGpuInfo(const gpu::GPUInfo& gpu_info) {
 607   // No further update of gpu_info if falling back to SwiftShader.
 608   if (use_swiftshader_)
 609     return;
 610
 611   gpu::MergeGPUInfo(&gpu_info_, gpu_info);
 612   complete_gpu_info_already_requested_ =
 613       complete_gpu_info_already_requested_ || gpu_info_.finalized;
 614
 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   if (gpu_driver_bug_list_) {
 626     gpu_driver_bugs_ = gpu_driver_bug_list_->MakeDecision(
 627         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 628   }
 629   AdjustGpuSwitchingOption(&gpu_driver_bugs_);
 630
 631   // We have to update GpuFeatureType before notify all the observers.
 632   NotifyGpuInfoUpdate();
 633 }
 634
 635 void GpuDataManagerImplPrivate::UpdateVideoMemoryUsageStats(
 636     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
 637   GpuDataManagerImpl::UnlockedSession session(owner_);
 638   observer_list_->Notify(&GpuDataManagerObserver::OnVideoMemoryUsageStatsUpdate,
 639                          video_memory_usage_stats);
 640 }
 641
 642 void GpuDataManagerImplPrivate::AppendRendererCommandLine(
 643     CommandLine* command_line) const {
 644   DCHECK(command_line);
 645
 646   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) &&
 647       !command_line->HasSwitch(switches::kDisableAcceleratedCompositing))
 648     command_line->AppendSwitch(switches::kDisableAcceleratedCompositing);
 649   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
 650       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode))
 651     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 652 #if defined(ENABLE_WEBRTC)
 653   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 654       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding))
 655     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 656 #endif
 657
 658   if (use_software_compositor_ &&
 659       !command_line->HasSwitch(switches::kEnableSoftwareCompositing))
 660     command_line->AppendSwitch(switches::kEnableSoftwareCompositing);
 661
 662 #if defined(USE_AURA)
 663   if (!CanUseGpuBrowserCompositor())
 664     command_line->AppendSwitch(switches::kDisableGpuCompositing);
 665 #endif
 666 }
 667
 668 void GpuDataManagerImplPrivate::AppendGpuCommandLine(
 669     CommandLine* command_line) const {
 670   DCHECK(command_line);
 671
 672   std::string use_gl =
 673       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kUseGL);
 674   base::FilePath swiftshader_path =
 675       CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 676           switches::kSwiftShaderPath);
 677   if (gpu_driver_bugs_.find(gpu::DISABLE_D3D11) != gpu_driver_bugs_.end())
 678     command_line->AppendSwitch(switches::kDisableD3D11);
 679   if (use_swiftshader_) {
 680     command_line->AppendSwitchASCII(switches::kUseGL, "swiftshader");
 681     if (swiftshader_path.empty())
 682       swiftshader_path = swiftshader_path_;
 683   } else if ((IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL) ||
 684               IsFeatureBlacklisted(
 685                   gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) ||
 686               IsFeatureBlacklisted(
 687                   gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS)) &&
 688       (use_gl == "any")) {
 689     command_line->AppendSwitchASCII(
 690         switches::kUseGL, gfx::kGLImplementationOSMesaName);
 691   } else if (!use_gl.empty()) {
 692     command_line->AppendSwitchASCII(switches::kUseGL, use_gl);
 693   }
 694   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus())
 695     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "true");
 696   else
 697     command_line->AppendSwitchASCII(switches::kSupportsDualGpus, "false");
 698
 699   if (!swiftshader_path.empty()) {
 700     command_line->AppendSwitchPath(switches::kSwiftShaderPath,
 701                                    swiftshader_path);
 702   }
 703
 704   if (!gpu_driver_bugs_.empty()) {
 705     command_line->AppendSwitchASCII(switches::kGpuDriverBugWorkarounds,
 706                                     IntSetToString(gpu_driver_bugs_));
 707   }
 708
 709   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_DECODE) &&
 710       !command_line->HasSwitch(switches::kDisableAcceleratedVideoDecode)) {
 711     command_line->AppendSwitch(switches::kDisableAcceleratedVideoDecode);
 712   }
 713 #if defined(ENABLE_WEBRTC)
 714   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO_ENCODE) &&
 715       !command_line->HasSwitch(switches::kDisableWebRtcHWEncoding)) {
 716     command_line->AppendSwitch(switches::kDisableWebRtcHWEncoding);
 717   }
 718 #endif
 719
 720   // Pass GPU and driver information to GPU process. We try to avoid full GPU
 721   // info collection at GPU process startup, but we need gpu vendor_id,
 722   // device_id, driver_vendor, driver_version for deciding whether we need to
 723   // collect full info (on Linux) and for crash reporting purpose.
 724   command_line->AppendSwitchASCII(switches::kGpuVendorID,
 725       base::StringPrintf("0x%04x", gpu_info_.gpu.vendor_id));
 726   command_line->AppendSwitchASCII(switches::kGpuDeviceID,
 727       base::StringPrintf("0x%04x", gpu_info_.gpu.device_id));
 728   command_line->AppendSwitchASCII(switches::kGpuDriverVendor,
 729       gpu_info_.driver_vendor);
 730   command_line->AppendSwitchASCII(switches::kGpuDriverVersion,
 731       gpu_info_.driver_version);
 732 }
 733
 734 void GpuDataManagerImplPrivate::AppendPluginCommandLine(
 735     CommandLine* command_line) const {
 736   DCHECK(command_line);
 737
 738 #if defined(OS_MACOSX)
 739   // TODO(jbauman): Add proper blacklist support for core animation plugins so
 740   // special-casing this video card won't be necessary. See
 741   // http://crbug.com/134015
 742   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) ||
 743       CommandLine::ForCurrentProcess()->HasSwitch(
 744           switches::kDisableAcceleratedCompositing)) {
 745     if (!command_line->HasSwitch(
 746            switches::kDisableCoreAnimationPlugins))
 747       command_line->AppendSwitch(
 748           switches::kDisableCoreAnimationPlugins);
 749   }
 750 #endif
 751 }
 752
 753 void GpuDataManagerImplPrivate::UpdateRendererWebPrefs(
 754     WebPreferences* prefs) const {
 755   DCHECK(prefs);
 756
 757   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING))
 758     prefs->accelerated_compositing_enabled = false;
 759   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL)) {
 760     prefs->experimental_webgl_enabled = false;
 761     prefs->pepper_3d_enabled = false;
 762   }
 763   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH3D))
 764     prefs->flash_3d_enabled = false;
 765   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D)) {
 766     prefs->flash_stage3d_enabled = false;
 767     prefs->flash_stage3d_baseline_enabled = false;
 768   }
 769   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FLASH_STAGE3D_BASELINE))
 770     prefs->flash_stage3d_baseline_enabled = false;
 771   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_2D_CANVAS))
 772     prefs->accelerated_2d_canvas_enabled = false;
 773   if (IsDriverBugWorkaroundActive(gpu::DISABLE_MULTISAMPLING) ||
 774       (IsDriverBugWorkaroundActive(gpu::DISABLE_MULTIMONITOR_MULTISAMPLING) &&
 775           display_count_ > 1))
 776     prefs->gl_multisampling_enabled = false;
 777   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_3D_CSS)) {
 778     prefs->accelerated_compositing_for_3d_transforms_enabled = false;
 779     prefs->accelerated_compositing_for_animation_enabled = false;
 780   }
 781   if (IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_VIDEO))
 782     prefs->accelerated_compositing_for_video_enabled = false;
 783
 784   // Accelerated video and animation are slower than regular when using
 785   // SwiftShader. 3D CSS or Pepper 3D may also be too slow to be worthwhile.
 786   if (ShouldUseSwiftShader()) {
 787     prefs->accelerated_compositing_for_video_enabled = false;
 788     prefs->accelerated_compositing_for_animation_enabled = false;
 789     prefs->accelerated_compositing_for_3d_transforms_enabled = false;
 790     prefs->accelerated_compositing_for_plugins_enabled = false;
 791     prefs->pepper_3d_enabled = false;
 792   }
 793
 794   if (use_software_compositor_) {
 795     prefs->force_compositing_mode = true;
 796     prefs->accelerated_compositing_enabled = true;
 797     prefs->accelerated_compositing_for_3d_transforms_enabled = true;
 798     prefs->accelerated_compositing_for_plugins_enabled = true;
 799     prefs->accelerated_compositing_for_video_enabled = true;
 800   }
 801
 802 #if defined(USE_AURA)
 803   if (!CanUseGpuBrowserCompositor()) {
 804     prefs->accelerated_2d_canvas_enabled = false;
 805     prefs->pepper_3d_enabled = false;
 806   }
 807 #endif
 808 }
 809
 810 void GpuDataManagerImplPrivate::DisableHardwareAcceleration() {
 811   card_blacklisted_ = true;
 812
 813   for (int i = 0; i < gpu::NUMBER_OF_GPU_FEATURE_TYPES; ++i)
 814     blacklisted_features_.insert(i);
 815
 816   EnableSwiftShaderIfNecessary();
 817   NotifyGpuInfoUpdate();
 818 }
 819
 820 std::string GpuDataManagerImplPrivate::GetBlacklistVersion() const {
 821   if (gpu_blacklist_)
 822     return gpu_blacklist_->version();
 823   return "0";
 824 }
 825
 826 std::string GpuDataManagerImplPrivate::GetDriverBugListVersion() const {
 827   if (gpu_driver_bug_list_)
 828     return gpu_driver_bug_list_->version();
 829   return "0";
 830 }
 831
 832 void GpuDataManagerImplPrivate::GetBlacklistReasons(
 833     base::ListValue* reasons) const {
 834   if (gpu_blacklist_)
 835     gpu_blacklist_->GetReasons(reasons);
 836 }
 837
 838 void GpuDataManagerImplPrivate::GetDriverBugWorkarounds(
 839     base::ListValue* workarounds) const {
 840   for (std::set<int>::const_iterator it = gpu_driver_bugs_.begin();
 841        it != gpu_driver_bugs_.end(); ++it) {
 842     workarounds->AppendString(
 843         gpu::GpuDriverBugWorkaroundTypeToString(
 844             static_cast<gpu::GpuDriverBugWorkaroundType>(*it)));
 845   }
 846 }
 847
 848 void GpuDataManagerImplPrivate::AddLogMessage(
 849     int level, const std::string& header, const std::string& message) {
 850   log_messages_.push_back(LogMessage(level, header, message));
 851 }
 852
 853 void GpuDataManagerImplPrivate::ProcessCrashed(
 854     base::TerminationStatus exit_code) {
 855   if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
 856     // Unretained is ok, because it's posted to UI thread, the thread
 857     // where the singleton GpuDataManagerImpl lives until the end.
 858     BrowserThread::PostTask(
 859         BrowserThread::UI,
 860         FROM_HERE,
 861         base::Bind(&GpuDataManagerImpl::ProcessCrashed,
 862                    base::Unretained(owner_),
 863                    exit_code));
 864     return;
 865   }
 866   {
 867     GpuDataManagerImpl::UnlockedSession session(owner_);
 868     observer_list_->Notify(
 869         &GpuDataManagerObserver::OnGpuProcessCrashed, exit_code);
 870   }
 871 }
 872
 873 base::ListValue* GpuDataManagerImplPrivate::GetLogMessages() const {
 874   base::ListValue* value = new base::ListValue;
 875   for (size_t ii = 0; ii < log_messages_.size(); ++ii) {
 876     base::DictionaryValue* dict = new base::DictionaryValue();
 877     dict->SetInteger("level", log_messages_[ii].level);
 878     dict->SetString("header", log_messages_[ii].header);
 879     dict->SetString("message", log_messages_[ii].message);
 880     value->Append(dict);
 881   }
 882   return value;
 883 }
 884
 885 void GpuDataManagerImplPrivate::HandleGpuSwitch() {
 886   GpuDataManagerImpl::UnlockedSession session(owner_);
 887   observer_list_->Notify(&GpuDataManagerObserver::OnGpuSwitching);
 888 }
 889
 890 bool GpuDataManagerImplPrivate::CanUseGpuBrowserCompositor() const {
 891   return !ShouldUseSwiftShader() &&
 892          !IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING) &&
 893          !IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_FORCE_COMPOSITING_MODE);
 894 }
 895
 896 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIs(
 897     const GURL& url, GpuDataManagerImpl::DomainGuilt guilt) {
 898   BlockDomainFrom3DAPIsAtTime(url, guilt, base::Time::Now());
 899 }
 900
 901 bool GpuDataManagerImplPrivate::Are3DAPIsBlocked(const GURL& url,
 902                                                  int render_process_id,
 903                                                  int render_view_id,
 904                                                  ThreeDAPIType requester) {
 905   bool blocked = Are3DAPIsBlockedAtTime(url, base::Time::Now()) !=
 906       GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
 907   if (blocked) {
 908     // Unretained is ok, because it's posted to UI thread, the thread
 909     // where the singleton GpuDataManagerImpl lives until the end.
 910     BrowserThread::PostTask(
 911         BrowserThread::UI, FROM_HERE,
 912         base::Bind(&GpuDataManagerImpl::Notify3DAPIBlocked,
 913                    base::Unretained(owner_), url, render_process_id,
 914                    render_view_id, requester));
 915   }
 916
 917   return blocked;
 918 }
 919
 920 void GpuDataManagerImplPrivate::DisableDomainBlockingFor3DAPIsForTesting() {
 921   domain_blocking_enabled_ = false;
 922 }
 923
 924 // static
 925 GpuDataManagerImplPrivate* GpuDataManagerImplPrivate::Create(
 926     GpuDataManagerImpl* owner) {
 927   return new GpuDataManagerImplPrivate(owner);
 928 }
 929
 930 GpuDataManagerImplPrivate::GpuDataManagerImplPrivate(
 931     GpuDataManagerImpl* owner)
 932     : complete_gpu_info_already_requested_(false),
 933       observer_list_(new GpuDataManagerObserverList),
 934       use_swiftshader_(false),
 935       card_blacklisted_(false),
 936       update_histograms_(true),
 937       window_count_(0),
 938       domain_blocking_enabled_(true),
 939       owner_(owner),
 940       display_count_(0),
 941       gpu_process_accessible_(true),
 942       use_software_compositor_(false),
 943       finalized_(false) {
 944   DCHECK(owner_);
 945   CommandLine* command_line = CommandLine::ForCurrentProcess();
 946   if (command_line->HasSwitch(switches::kDisableAcceleratedCompositing)) {
 947     command_line->AppendSwitch(switches::kDisableAccelerated2dCanvas);
 948     command_line->AppendSwitch(switches::kDisableAcceleratedLayers);
 949   }
 950   if (command_line->HasSwitch(switches::kDisableGpu))
 951     DisableHardwareAcceleration();
 952   if (command_line->HasSwitch(switches::kEnableSoftwareCompositing))
 953     use_software_compositor_ = true;
 954   // TODO(jbauman): enable for Chrome OS
 955 #if (defined(USE_AURA) && !defined(OS_CHROMEOS)) || defined(OS_MACOSX)
 956   use_software_compositor_ = true;
 957 #endif
 958
 959 #if defined(OS_MACOSX)
 960   CGGetActiveDisplayList (0, NULL, &display_count_);
 961   CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
 962 #endif  // OS_MACOSX
 963
 964   // For testing only.
 965   if (command_line->HasSwitch(switches::kDisableDomainBlockingFor3DAPIs)) {
 966     domain_blocking_enabled_ = false;
 967   }
 968 }
 969
 970 GpuDataManagerImplPrivate::~GpuDataManagerImplPrivate() {
 971 #if defined(OS_MACOSX)
 972   CGDisplayRemoveReconfigurationCallback(DisplayReconfigCallback, owner_);
 973 #endif
 974 }
 975
 976 void GpuDataManagerImplPrivate::InitializeImpl(
 977     const std::string& gpu_blacklist_json,
 978     const std::string& gpu_driver_bug_list_json,
 979     const gpu::GPUInfo& gpu_info) {
 980   const bool log_gpu_control_list_decisions =
 981       CommandLine::ForCurrentProcess()->HasSwitch(
 982           switches::kLogGpuControlListDecisions);
 983
 984   if (!gpu_blacklist_json.empty()) {
 985     gpu_blacklist_.reset(gpu::GpuBlacklist::Create());
 986     if (log_gpu_control_list_decisions)
 987       gpu_blacklist_->enable_control_list_logging("gpu_blacklist");
 988     bool success = gpu_blacklist_->LoadList(
 989         gpu_blacklist_json, gpu::GpuControlList::kCurrentOsOnly);
 990     DCHECK(success);
 991   }
 992   if (!gpu_driver_bug_list_json.empty()) {
 993     gpu_driver_bug_list_.reset(gpu::GpuDriverBugList::Create());
 994     if (log_gpu_control_list_decisions)
 995       gpu_driver_bug_list_->enable_control_list_logging("gpu_driver_bug_list");
 996     bool success = gpu_driver_bug_list_->LoadList(
 997         gpu_driver_bug_list_json, gpu::GpuControlList::kCurrentOsOnly);
 998     DCHECK(success);
 999   }
1000
1001   gpu_info_ = gpu_info;
1002   UpdateGpuInfo(gpu_info);
1003   UpdateGpuSwitchingManager(gpu_info);
1004   UpdatePreliminaryBlacklistedFeatures();
1005
1006 #if defined(OS_ANDROID)
1007   ApplyAndroidWorkarounds(gpu_info, CommandLine::ForCurrentProcess());
1008 #endif  // OS_ANDROID
1009 }
1010
1011 void GpuDataManagerImplPrivate::UpdateBlacklistedFeatures(
1012     const std::set<int>& features) {
1013   CommandLine* command_line = CommandLine::ForCurrentProcess();
1014   blacklisted_features_ = features;
1015
1016   // Force disable using the GPU for these features, even if they would
1017   // otherwise be allowed.
1018   if (card_blacklisted_ ||
1019       command_line->HasSwitch(switches::kBlacklistAcceleratedCompositing)) {
1020     blacklisted_features_.insert(
1021         gpu::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING);
1022   }
1023   if (card_blacklisted_ ||
1024       command_line->HasSwitch(switches::kBlacklistWebGL)) {
1025     blacklisted_features_.insert(gpu::GPU_FEATURE_TYPE_WEBGL);
1026   }
1027
1028   EnableSwiftShaderIfNecessary();
1029 }
1030
1031 void GpuDataManagerImplPrivate::UpdatePreliminaryBlacklistedFeatures() {
1032   preliminary_blacklisted_features_ = blacklisted_features_;
1033 }
1034
1035 void GpuDataManagerImplPrivate::UpdateGpuSwitchingManager(
1036     const gpu::GPUInfo& gpu_info) {
1037   ui::GpuSwitchingManager::GetInstance()->SetGpuCount(
1038       gpu_info.secondary_gpus.size() + 1);
1039
1040   if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus()) {
1041     if (gpu_driver_bugs_.count(gpu::FORCE_DISCRETE_GPU) == 1)
1042       ui::GpuSwitchingManager::GetInstance()->ForceUseOfDiscreteGpu();
1043     else if (gpu_driver_bugs_.count(gpu::FORCE_INTEGRATED_GPU) == 1)
1044       ui::GpuSwitchingManager::GetInstance()->ForceUseOfIntegratedGpu();
1045   }
1046 }
1047
1048 void GpuDataManagerImplPrivate::NotifyGpuInfoUpdate() {
1049   observer_list_->Notify(&GpuDataManagerObserver::OnGpuInfoUpdate);
1050 }
1051
1052 void GpuDataManagerImplPrivate::EnableSwiftShaderIfNecessary() {
1053   if (!GpuAccessAllowed(NULL) ||
1054       blacklisted_features_.count(gpu::GPU_FEATURE_TYPE_WEBGL)) {
1055     if (!swiftshader_path_.empty() &&
1056         !CommandLine::ForCurrentProcess()->HasSwitch(
1057              switches::kDisableSoftwareRasterizer))
1058       use_swiftshader_ = true;
1059   }
1060 }
1061
1062 std::string GpuDataManagerImplPrivate::GetDomainFromURL(
1063     const GURL& url) const {
1064   // For the moment, we just use the host, or its IP address, as the
1065   // entry in the set, rather than trying to figure out the top-level
1066   // domain. This does mean that a.foo.com and b.foo.com will be
1067   // treated independently in the blocking of a given domain, but it
1068   // would require a third-party library to reliably figure out the
1069   // top-level domain from a URL.
1070   if (!url.has_host()) {
1071     return std::string();
1072   }
1073
1074   return url.host();
1075 }
1076
1077 void GpuDataManagerImplPrivate::BlockDomainFrom3DAPIsAtTime(
1078     const GURL& url,
1079     GpuDataManagerImpl::DomainGuilt guilt,
1080     base::Time at_time) {
1081   if (!domain_blocking_enabled_)
1082     return;
1083
1084   std::string domain = GetDomainFromURL(url);
1085
1086   DomainBlockEntry& entry = blocked_domains_[domain];
1087   entry.last_guilt = guilt;
1088   timestamps_of_gpu_resets_.push_back(at_time);
1089 }
1090
1091 GpuDataManagerImpl::DomainBlockStatus
1092 GpuDataManagerImplPrivate::Are3DAPIsBlockedAtTime(
1093     const GURL& url, base::Time at_time) const {
1094   if (!domain_blocking_enabled_)
1095     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1096
1097   // Note: adjusting the policies in this code will almost certainly
1098   // require adjusting the associated unit tests.
1099   std::string domain = GetDomainFromURL(url);
1100
1101   DomainBlockMap::const_iterator iter = blocked_domains_.find(domain);
1102   if (iter != blocked_domains_.end()) {
1103     // Err on the side of caution, and assume that if a particular
1104     // domain shows up in the block map, it's there for a good
1105     // reason and don't let its presence there automatically expire.
1106
1107     UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1108                               BLOCK_STATUS_SPECIFIC_DOMAIN_BLOCKED,
1109                               BLOCK_STATUS_MAX);
1110
1111     return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_BLOCKED;
1112   }
1113
1114   // Look at the timestamps of the recent GPU resets to see if there are
1115   // enough within the threshold which would cause us to blacklist all
1116   // domains. This doesn't need to be overly precise -- if time goes
1117   // backward due to a system clock adjustment, that's fine.
1118   //
1119   // TODO(kbr): make this pay attention to the TDR thresholds in the
1120   // Windows registry, but make sure it continues to be testable.
1121   {
1122     std::list<base::Time>::iterator iter = timestamps_of_gpu_resets_.begin();
1123     int num_resets_within_timeframe = 0;
1124     while (iter != timestamps_of_gpu_resets_.end()) {
1125       base::Time time = *iter;
1126       base::TimeDelta delta_t = at_time - time;
1127
1128       // If this entry has "expired", just remove it.
1129       if (delta_t.InMilliseconds() > kBlockAllDomainsMs) {
1130         iter = timestamps_of_gpu_resets_.erase(iter);
1131         continue;
1132       }
1133
1134       ++num_resets_within_timeframe;
1135       ++iter;
1136     }
1137
1138     if (num_resets_within_timeframe >= kNumResetsWithinDuration) {
1139       UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1140                                 BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
1141                                 BLOCK_STATUS_MAX);
1142
1143       return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_ALL_DOMAINS_BLOCKED;
1144     }
1145   }
1146
1147   UMA_HISTOGRAM_ENUMERATION("GPU.BlockStatusForClient3DAPIs",
1148                             BLOCK_STATUS_NOT_BLOCKED,
1149                             BLOCK_STATUS_MAX);
1150
1151   return GpuDataManagerImpl::DOMAIN_BLOCK_STATUS_NOT_BLOCKED;
1152 }
1153
1154 int64 GpuDataManagerImplPrivate::GetBlockAllDomainsDurationInMs() const {
1155   return kBlockAllDomainsMs;
1156 }
1157
1158 void GpuDataManagerImplPrivate::Notify3DAPIBlocked(const GURL& url,
1159                                                    int render_process_id,
1160                                                    int render_view_id,
1161                                                    ThreeDAPIType requester) {
1162   GpuDataManagerImpl::UnlockedSession session(owner_);
1163   observer_list_->Notify(&GpuDataManagerObserver::DidBlock3DAPIs,
1164                          url, render_process_id, render_view_id, requester);
1165 }
1166
1167 void GpuDataManagerImplPrivate::OnGpuProcessInitFailure() {
1168   gpu_process_accessible_ = false;
1169   gpu_info_.finalized = true;
1170   complete_gpu_info_already_requested_ = true;
1171   // Some observers might be waiting.
1172   NotifyGpuInfoUpdate();
1173 }
1174
1175 }  // namespace content