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