widget/GfxInfoBase.cpp

   1 /* vim: se cin sw=2 ts=2 et : */
   2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "mozilla/ArrayUtils.h"
   9
  10 #include "GfxInfoBase.h"
  11
  12 #include <mutex>  // std::call_once
  13
  14 #include "GfxDriverInfo.h"
  15 #include "js/Array.h"               // JS::GetArrayLength, JS::NewArrayObject
  16 #include "js/PropertyAndElement.h"  // JS_SetElement, JS_SetProperty
  17 #include "nsCOMPtr.h"
  18 #include "nsCOMArray.h"
  19 #include "nsString.h"
  20 #include "nsUnicharUtils.h"
  21 #include "nsVersionComparator.h"
  22 #include "mozilla/Services.h"
  23 #include "mozilla/Observer.h"
  24 #include "nsIObserver.h"
  25 #include "nsIObserverService.h"
  26 #include "nsIScreenManager.h"
  27 #include "nsTArray.h"
  28 #include "nsXULAppAPI.h"
  29 #include "nsIXULAppInfo.h"
  30 #include "mozilla/ClearOnShutdown.h"
  31 #include "mozilla/Preferences.h"
  32 #include "mozilla/StaticPrefs_gfx.h"
  33 #include "mozilla/gfx/2D.h"
  34 #include "mozilla/gfx/GPUProcessManager.h"
  35 #include "mozilla/gfx/Logging.h"
  36 #include "mozilla/gfx/gfxVars.h"
  37
  38 #include "gfxPlatform.h"
  39 #include "gfxConfig.h"
  40 #include "DriverCrashGuard.h"
  41
  42 using namespace mozilla::widget;
  43 using namespace mozilla;
  44 using mozilla::MutexAutoLock;
  45
  46 nsTArray<GfxDriverInfo>* GfxInfoBase::sDriverInfo;
  47 StaticAutoPtr<nsTArray<gfx::GfxInfoFeatureStatus>> GfxInfoBase::sFeatureStatus;
  48 bool GfxInfoBase::sDriverInfoObserverInitialized;
  49 bool GfxInfoBase::sShutdownOccurred;
  50
  51 // Call this when setting sFeatureStatus to a non-null pointer to
  52 // ensure destruction even if the GfxInfo component is never instantiated.
  53 static void InitFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>* aPtr) {
  54   static std::once_flag sOnce;
  55   std::call_once(sOnce, [] { ClearOnShutdown(&GfxInfoBase::sFeatureStatus); });
  56   GfxInfoBase::sFeatureStatus = aPtr;
  57 }
  58
  59 // Observes for shutdown so that the child GfxDriverInfo list is freed.
  60 class ShutdownObserver : public nsIObserver {
  61   virtual ~ShutdownObserver() = default;
  62
  63  public:
  64   ShutdownObserver() = default;
  65
  66   NS_DECL_ISUPPORTS
  67
  68   NS_IMETHOD Observe(nsISupports* subject, const char* aTopic,
  69                      const char16_t* aData) override {
  70     MOZ_ASSERT(strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0);
  71
  72     delete GfxInfoBase::sDriverInfo;
  73     GfxInfoBase::sDriverInfo = nullptr;
  74
  75     for (auto& deviceFamily : GfxDriverInfo::sDeviceFamilies) {
  76       delete deviceFamily;
  77       deviceFamily = nullptr;
  78     }
  79
  80     for (auto& desktop : GfxDriverInfo::sDesktopEnvironment) {
  81       delete desktop;
  82       desktop = nullptr;
  83     }
  84
  85     for (auto& windowProtocol : GfxDriverInfo::sWindowProtocol) {
  86       delete windowProtocol;
  87       windowProtocol = nullptr;
  88     }
  89
  90     for (auto& deviceVendor : GfxDriverInfo::sDeviceVendors) {
  91       delete deviceVendor;
  92       deviceVendor = nullptr;
  93     }
  94
  95     for (auto& driverVendor : GfxDriverInfo::sDriverVendors) {
  96       delete driverVendor;
  97       driverVendor = nullptr;
  98     }
  99
 100     GfxInfoBase::sShutdownOccurred = true;
 101
 102     return NS_OK;
 103   }
 104 };
 105
 106 NS_IMPL_ISUPPORTS(ShutdownObserver, nsIObserver)
 107
 108 static void InitGfxDriverInfoShutdownObserver() {
 109   if (GfxInfoBase::sDriverInfoObserverInitialized) return;
 110
 111   GfxInfoBase::sDriverInfoObserverInitialized = true;
 112
 113   nsCOMPtr<nsIObserverService> observerService = services::GetObserverService();
 114   if (!observerService) {
 115     NS_WARNING("Could not get observer service!");
 116     return;
 117   }
 118
 119   ShutdownObserver* obs = new ShutdownObserver();
 120   observerService->AddObserver(obs, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
 121 }
 122
 123 using namespace mozilla::widget;
 124 using namespace mozilla::gfx;
 125 using namespace mozilla;
 126
 127 NS_IMPL_ISUPPORTS(GfxInfoBase, nsIGfxInfo, nsIObserver,
 128                   nsISupportsWeakReference)
 129
 130 #define BLOCKLIST_PREF_BRANCH "gfx.blacklist."
 131 #define SUGGESTED_VERSION_PREF BLOCKLIST_PREF_BRANCH "suggested-driver-version"
 132
 133 static const char* GetPrefNameForFeature(int32_t aFeature) {
 134   const char* name = nullptr;
 135   switch (aFeature) {
 136     case nsIGfxInfo::FEATURE_DIRECT2D:
 137       name = BLOCKLIST_PREF_BRANCH "direct2d";
 138       break;
 139     case nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS:
 140       name = BLOCKLIST_PREF_BRANCH "layers.direct3d9";
 141       break;
 142     case nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS:
 143       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10";
 144       break;
 145     case nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS:
 146       name = BLOCKLIST_PREF_BRANCH "layers.direct3d10-1";
 147       break;
 148     case nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS:
 149       name = BLOCKLIST_PREF_BRANCH "layers.direct3d11";
 150       break;
 151     case nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE:
 152       name = BLOCKLIST_PREF_BRANCH "direct3d11angle";
 153       break;
 154     case nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING:
 155       name = BLOCKLIST_PREF_BRANCH "hardwarevideodecoding";
 156       break;
 157     case nsIGfxInfo::FEATURE_OPENGL_LAYERS:
 158       name = BLOCKLIST_PREF_BRANCH "layers.opengl";
 159       break;
 160     case nsIGfxInfo::FEATURE_WEBGL_OPENGL:
 161       name = BLOCKLIST_PREF_BRANCH "webgl.opengl";
 162       break;
 163     case nsIGfxInfo::FEATURE_WEBGL_ANGLE:
 164       name = BLOCKLIST_PREF_BRANCH "webgl.angle";
 165       break;
 166     case nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA:
 167       name = BLOCKLIST_PREF_BRANCH "webgl.msaa";
 168       break;
 169     case nsIGfxInfo::FEATURE_STAGEFRIGHT:
 170       name = BLOCKLIST_PREF_BRANCH "stagefright";
 171       break;
 172     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264:
 173       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.h264";
 174       break;
 175     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE:
 176       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.encode";
 177       break;
 178     case nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE:
 179       name = BLOCKLIST_PREF_BRANCH "webrtc.hw.acceleration.decode";
 180       break;
 181     case nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION:
 182       name = BLOCKLIST_PREF_BRANCH "canvas2d.acceleration";
 183       break;
 184     case nsIGfxInfo::FEATURE_DX_INTEROP2:
 185       name = BLOCKLIST_PREF_BRANCH "dx.interop2";
 186       break;
 187     case nsIGfxInfo::FEATURE_GPU_PROCESS:
 188       name = BLOCKLIST_PREF_BRANCH "gpu.process";
 189       break;
 190     case nsIGfxInfo::FEATURE_WEBGL2:
 191       name = BLOCKLIST_PREF_BRANCH "webgl2";
 192       break;
 193     case nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX:
 194       name = BLOCKLIST_PREF_BRANCH "d3d11.keyed.mutex";
 195       break;
 196     case nsIGfxInfo::FEATURE_WEBRENDER:
 197       name = BLOCKLIST_PREF_BRANCH "webrender";
 198       break;
 199     case nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR:
 200       name = BLOCKLIST_PREF_BRANCH "webrender.compositor";
 201       break;
 202     case nsIGfxInfo::FEATURE_DX_NV12:
 203       name = BLOCKLIST_PREF_BRANCH "dx.nv12";
 204       break;
 205     case nsIGfxInfo::FEATURE_DX_P010:
 206       name = BLOCKLIST_PREF_BRANCH "dx.p010";
 207       break;
 208     case nsIGfxInfo::FEATURE_DX_P016:
 209       name = BLOCKLIST_PREF_BRANCH "dx.p016";
 210       break;
 211     case nsIGfxInfo::FEATURE_VP8_HW_DECODE:
 212       name = BLOCKLIST_PREF_BRANCH "vp8.hw-decode";
 213       break;
 214     case nsIGfxInfo::FEATURE_VP9_HW_DECODE:
 215       name = BLOCKLIST_PREF_BRANCH "vp9.hw-decode";
 216       break;
 217     case nsIGfxInfo::FEATURE_GL_SWIZZLE:
 218       name = BLOCKLIST_PREF_BRANCH "gl.swizzle";
 219       break;
 220     case nsIGfxInfo::FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS:
 221       name = BLOCKLIST_PREF_BRANCH "webrender.scissored_cache_clears";
 222       break;
 223     case nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS:
 224       name = BLOCKLIST_PREF_BRANCH "webgl.allow-oop";
 225       break;
 226     case nsIGfxInfo::FEATURE_THREADSAFE_GL:
 227       name = BLOCKLIST_PREF_BRANCH "gl.threadsafe";
 228       break;
 229     case nsIGfxInfo::FEATURE_WEBRENDER_OPTIMIZED_SHADERS:
 230       name = BLOCKLIST_PREF_BRANCH "webrender.optimized-shaders";
 231       break;
 232     case nsIGfxInfo::FEATURE_X11_EGL:
 233       name = BLOCKLIST_PREF_BRANCH "x11.egl";
 234       break;
 235     case nsIGfxInfo::FEATURE_DMABUF:
 236       name = BLOCKLIST_PREF_BRANCH "dmabuf";
 237       break;
 238     case nsIGfxInfo::FEATURE_VAAPI:
 239       name = BLOCKLIST_PREF_BRANCH "vaapi";
 240       break;
 241     case nsIGfxInfo::FEATURE_WEBGPU:
 242       name = BLOCKLIST_PREF_BRANCH "webgpu";
 243       break;
 244     case nsIGfxInfo::FEATURE_WEBRENDER_SHADER_CACHE:
 245       name = BLOCKLIST_PREF_BRANCH "webrender.program-binary-disk";
 246       break;
 247     case nsIGfxInfo::FEATURE_WEBRENDER_PARTIAL_PRESENT:
 248       name = BLOCKLIST_PREF_BRANCH "webrender.partial-present";
 249       break;
 250     default:
 251       MOZ_ASSERT_UNREACHABLE("Unexpected nsIGfxInfo feature?!");
 252       break;
 253   }
 254
 255   return name;
 256 }
 257
 258 // Returns the value of the pref for the relevant feature in aValue.
 259 // If the pref doesn't exist, aValue is not touched, and returns false.
 260 static bool GetPrefValueForFeature(int32_t aFeature, int32_t& aValue,
 261                                    nsACString& aFailureId) {
 262   const char* prefname = GetPrefNameForFeature(aFeature);
 263   if (!prefname) return false;
 264
 265   aValue = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 266   if (!NS_SUCCEEDED(Preferences::GetInt(prefname, &aValue))) {
 267     return false;
 268   }
 269
 270   nsCString failureprefname(prefname);
 271   failureprefname += ".failureid";
 272   nsAutoCString failureValue;
 273   nsresult rv = Preferences::GetCString(failureprefname.get(), failureValue);
 274   if (NS_SUCCEEDED(rv)) {
 275     aFailureId = failureValue.get();
 276   } else {
 277     aFailureId = "FEATURE_FAILURE_BLOCKLIST_PREF";
 278   }
 279
 280   return true;
 281 }
 282
 283 static void SetPrefValueForFeature(int32_t aFeature, int32_t aValue,
 284                                    const nsACString& aFailureId) {
 285   const char* prefname = GetPrefNameForFeature(aFeature);
 286   if (!prefname) return;
 287   if (XRE_IsParentProcess()) {
 288     GfxInfoBase::sFeatureStatus = nullptr;
 289   }
 290
 291   Preferences::SetInt(prefname, aValue);
 292   if (!aFailureId.IsEmpty()) {
 293     nsCString failureprefname(prefname);
 294     failureprefname += ".failureid";
 295     Preferences::SetCString(failureprefname.get(), aFailureId);
 296   }
 297 }
 298
 299 static void RemovePrefForFeature(int32_t aFeature) {
 300   const char* prefname = GetPrefNameForFeature(aFeature);
 301   if (!prefname) return;
 302
 303   if (XRE_IsParentProcess()) {
 304     GfxInfoBase::sFeatureStatus = nullptr;
 305   }
 306   Preferences::ClearUser(prefname);
 307 }
 308
 309 static bool GetPrefValueForDriverVersion(nsCString& aVersion) {
 310   return NS_SUCCEEDED(
 311       Preferences::GetCString(SUGGESTED_VERSION_PREF, aVersion));
 312 }
 313
 314 static void SetPrefValueForDriverVersion(const nsAString& aVersion) {
 315   Preferences::SetString(SUGGESTED_VERSION_PREF, aVersion);
 316 }
 317
 318 static void RemovePrefForDriverVersion() {
 319   Preferences::ClearUser(SUGGESTED_VERSION_PREF);
 320 }
 321
 322 static OperatingSystem BlocklistOSToOperatingSystem(const nsAString& os) {
 323   if (os.EqualsLiteral("WINNT 6.1")) {
 324     return OperatingSystem::Windows7;
 325   }
 326   if (os.EqualsLiteral("WINNT 6.2")) {
 327     return OperatingSystem::Windows8;
 328   }
 329   if (os.EqualsLiteral("WINNT 6.3")) {
 330     return OperatingSystem::Windows8_1;
 331   }
 332   if (os.EqualsLiteral("WINNT 10.0")) {
 333     return OperatingSystem::Windows10;
 334   }
 335   if (os.EqualsLiteral("Linux")) {
 336     return OperatingSystem::Linux;
 337   }
 338   if (os.EqualsLiteral("Darwin 9")) {
 339     return OperatingSystem::OSX10_5;
 340   }
 341   if (os.EqualsLiteral("Darwin 10")) {
 342     return OperatingSystem::OSX10_6;
 343   }
 344   if (os.EqualsLiteral("Darwin 11")) {
 345     return OperatingSystem::OSX10_7;
 346   }
 347   if (os.EqualsLiteral("Darwin 12")) {
 348     return OperatingSystem::OSX10_8;
 349   }
 350   if (os.EqualsLiteral("Darwin 13")) {
 351     return OperatingSystem::OSX10_9;
 352   }
 353   if (os.EqualsLiteral("Darwin 14")) {
 354     return OperatingSystem::OSX10_10;
 355   }
 356   if (os.EqualsLiteral("Darwin 15")) {
 357     return OperatingSystem::OSX10_11;
 358   }
 359   if (os.EqualsLiteral("Darwin 16")) {
 360     return OperatingSystem::OSX10_12;
 361   }
 362   if (os.EqualsLiteral("Darwin 17")) {
 363     return OperatingSystem::OSX10_13;
 364   }
 365   if (os.EqualsLiteral("Darwin 18")) {
 366     return OperatingSystem::OSX10_14;
 367   }
 368   if (os.EqualsLiteral("Darwin 19")) {
 369     return OperatingSystem::OSX10_15;
 370   }
 371   if (os.EqualsLiteral("Darwin 20")) {
 372     return OperatingSystem::OSX11_0;
 373   }
 374   if (os.EqualsLiteral("Android")) {
 375     return OperatingSystem::Android;
 376     // For historical reasons, "All" in blocklist means "All Windows"
 377   }
 378   if (os.EqualsLiteral("All")) {
 379     return OperatingSystem::Windows;
 380   }
 381   if (os.EqualsLiteral("Darwin")) {
 382     return OperatingSystem::OSX;
 383   }
 384
 385   return OperatingSystem::Unknown;
 386 }
 387
 388 static GfxDeviceFamily* BlocklistDevicesToDeviceFamily(
 389     nsTArray<nsCString>& devices) {
 390   if (devices.Length() == 0) return nullptr;
 391
 392   // For each device, get its device ID, and return a freshly-allocated
 393   // GfxDeviceFamily with the contents of that array.
 394   GfxDeviceFamily* deviceIds = new GfxDeviceFamily;
 395
 396   for (uint32_t i = 0; i < devices.Length(); ++i) {
 397     // We make sure we don't add any "empty" device entries to the array, so
 398     // we don't need to check if devices[i] is empty.
 399     deviceIds->Append(NS_ConvertUTF8toUTF16(devices[i]));
 400   }
 401
 402   return deviceIds;
 403 }
 404
 405 static int32_t BlocklistFeatureToGfxFeature(const nsAString& aFeature) {
 406   MOZ_ASSERT(!aFeature.IsEmpty());
 407   if (aFeature.EqualsLiteral("DIRECT2D")) {
 408     return nsIGfxInfo::FEATURE_DIRECT2D;
 409   }
 410   if (aFeature.EqualsLiteral("DIRECT3D_9_LAYERS")) {
 411     return nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS;
 412   }
 413   if (aFeature.EqualsLiteral("DIRECT3D_10_LAYERS")) {
 414     return nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS;
 415   }
 416   if (aFeature.EqualsLiteral("DIRECT3D_10_1_LAYERS")) {
 417     return nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS;
 418   }
 419   if (aFeature.EqualsLiteral("DIRECT3D_11_LAYERS")) {
 420     return nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS;
 421   }
 422   if (aFeature.EqualsLiteral("DIRECT3D_11_ANGLE")) {
 423     return nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE;
 424   }
 425   if (aFeature.EqualsLiteral("HARDWARE_VIDEO_DECODING")) {
 426     return nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING;
 427   }
 428   if (aFeature.EqualsLiteral("OPENGL_LAYERS")) {
 429     return nsIGfxInfo::FEATURE_OPENGL_LAYERS;
 430   }
 431   if (aFeature.EqualsLiteral("WEBGL_OPENGL")) {
 432     return nsIGfxInfo::FEATURE_WEBGL_OPENGL;
 433   }
 434   if (aFeature.EqualsLiteral("WEBGL_ANGLE")) {
 435     return nsIGfxInfo::FEATURE_WEBGL_ANGLE;
 436   }
 437   if (aFeature.EqualsLiteral("WEBGL_MSAA")) {
 438     return nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA;
 439   }
 440   if (aFeature.EqualsLiteral("STAGEFRIGHT")) {
 441     return nsIGfxInfo::FEATURE_STAGEFRIGHT;
 442   }
 443   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_ENCODE")) {
 444     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE;
 445   }
 446   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_DECODE")) {
 447     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE;
 448   }
 449   if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_H264")) {
 450     return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264;
 451   }
 452   if (aFeature.EqualsLiteral("CANVAS2D_ACCELERATION")) {
 453     return nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION;
 454   }
 455   if (aFeature.EqualsLiteral("DX_INTEROP2")) {
 456     return nsIGfxInfo::FEATURE_DX_INTEROP2;
 457   }
 458   if (aFeature.EqualsLiteral("GPU_PROCESS")) {
 459     return nsIGfxInfo::FEATURE_GPU_PROCESS;
 460   }
 461   if (aFeature.EqualsLiteral("WEBGL2")) {
 462     return nsIGfxInfo::FEATURE_WEBGL2;
 463   }
 464   if (aFeature.EqualsLiteral("D3D11_KEYED_MUTEX")) {
 465     return nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX;
 466   }
 467   if (aFeature.EqualsLiteral("WEBRENDER")) {
 468     return nsIGfxInfo::FEATURE_WEBRENDER;
 469   }
 470   if (aFeature.EqualsLiteral("WEBRENDER_COMPOSITOR")) {
 471     return nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR;
 472   }
 473   if (aFeature.EqualsLiteral("DX_NV12")) {
 474     return nsIGfxInfo::FEATURE_DX_NV12;
 475   }
 476   if (aFeature.EqualsLiteral("VP8_HW_DECODE")) {
 477     return nsIGfxInfo::FEATURE_VP8_HW_DECODE;
 478   }
 479   if (aFeature.EqualsLiteral("VP9_HW_DECODE")) {
 480     return nsIGfxInfo::FEATURE_VP9_HW_DECODE;
 481   }
 482   if (aFeature.EqualsLiteral("GL_SWIZZLE")) {
 483     return nsIGfxInfo::FEATURE_GL_SWIZZLE;
 484   }
 485   if (aFeature.EqualsLiteral("WEBRENDER_SCISSORED_CACHE_CLEARS")) {
 486     return nsIGfxInfo::FEATURE_WEBRENDER_SCISSORED_CACHE_CLEARS;
 487   }
 488   if (aFeature.EqualsLiteral("ALLOW_WEBGL_OUT_OF_PROCESS")) {
 489     return nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS;
 490   }
 491   if (aFeature.EqualsLiteral("THREADSAFE_GL")) {
 492     return nsIGfxInfo::FEATURE_THREADSAFE_GL;
 493   }
 494   if (aFeature.EqualsLiteral("X11_EGL")) {
 495     return nsIGfxInfo::FEATURE_X11_EGL;
 496   }
 497   if (aFeature.EqualsLiteral("DMABUF")) {
 498     return nsIGfxInfo::FEATURE_DMABUF;
 499   }
 500   if (aFeature.EqualsLiteral("VAAPI")) {
 501     return nsIGfxInfo::FEATURE_VAAPI;
 502   }
 503   if (aFeature.EqualsLiteral("WEBGPU")) {
 504     return nsIGfxInfo::FEATURE_WEBGPU;
 505   }
 506   if (aFeature.EqualsLiteral("WEBRENDER_PARTIAL_PRESENT")) {
 507     return nsIGfxInfo::FEATURE_WEBRENDER_PARTIAL_PRESENT;
 508   }
 509
 510   // If we don't recognize the feature, it may be new, and something
 511   // this version doesn't understand.  So, nothing to do.  This is
 512   // different from feature not being specified at all, in which case
 513   // this method should not get called and we should continue with the
 514   // "all features" blocklisting.
 515   return -1;
 516 }
 517
 518 static int32_t BlocklistFeatureStatusToGfxFeatureStatus(
 519     const nsAString& aStatus) {
 520   if (aStatus.EqualsLiteral("STATUS_OK")) {
 521     return nsIGfxInfo::FEATURE_STATUS_OK;
 522   }
 523   if (aStatus.EqualsLiteral("BLOCKED_DRIVER_VERSION")) {
 524     return nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION;
 525   }
 526   if (aStatus.EqualsLiteral("BLOCKED_DEVICE")) {
 527     return nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
 528   }
 529   if (aStatus.EqualsLiteral("DISCOURAGED")) {
 530     return nsIGfxInfo::FEATURE_DISCOURAGED;
 531   }
 532   if (aStatus.EqualsLiteral("BLOCKED_OS_VERSION")) {
 533     return nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION;
 534   }
 535   if (aStatus.EqualsLiteral("DENIED")) {
 536     return nsIGfxInfo::FEATURE_DENIED;
 537   }
 538   if (aStatus.EqualsLiteral("ALLOW_QUALIFIED")) {
 539     return nsIGfxInfo::FEATURE_ALLOW_QUALIFIED;
 540   }
 541   if (aStatus.EqualsLiteral("ALLOW_ALWAYS")) {
 542     return nsIGfxInfo::FEATURE_ALLOW_ALWAYS;
 543   }
 544
 545   // Do not allow it to set STATUS_UNKNOWN.  Also, we are not
 546   // expecting the "mismatch" status showing up here.
 547
 548   return nsIGfxInfo::FEATURE_STATUS_OK;
 549 }
 550
 551 static VersionComparisonOp BlocklistComparatorToComparisonOp(
 552     const nsAString& op) {
 553   if (op.EqualsLiteral("LESS_THAN")) {
 554     return DRIVER_LESS_THAN;
 555   }
 556   if (op.EqualsLiteral("BUILD_ID_LESS_THAN")) {
 557     return DRIVER_BUILD_ID_LESS_THAN;
 558   }
 559   if (op.EqualsLiteral("LESS_THAN_OR_EQUAL")) {
 560     return DRIVER_LESS_THAN_OR_EQUAL;
 561   }
 562   if (op.EqualsLiteral("BUILD_ID_LESS_THAN_OR_EQUAL")) {
 563     return DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL;
 564   }
 565   if (op.EqualsLiteral("GREATER_THAN")) {
 566     return DRIVER_GREATER_THAN;
 567   }
 568   if (op.EqualsLiteral("GREATER_THAN_OR_EQUAL")) {
 569     return DRIVER_GREATER_THAN_OR_EQUAL;
 570   }
 571   if (op.EqualsLiteral("EQUAL")) {
 572     return DRIVER_EQUAL;
 573   }
 574   if (op.EqualsLiteral("NOT_EQUAL")) {
 575     return DRIVER_NOT_EQUAL;
 576   }
 577   if (op.EqualsLiteral("BETWEEN_EXCLUSIVE")) {
 578     return DRIVER_BETWEEN_EXCLUSIVE;
 579   }
 580   if (op.EqualsLiteral("BETWEEN_INCLUSIVE")) {
 581     return DRIVER_BETWEEN_INCLUSIVE;
 582   }
 583   if (op.EqualsLiteral("BETWEEN_INCLUSIVE_START")) {
 584     return DRIVER_BETWEEN_INCLUSIVE_START;
 585   }
 586
 587   return DRIVER_COMPARISON_IGNORED;
 588 }
 589
 590 /*
 591   Deserialize Blocklist entries from string.
 592   e.g:
 593   os:WINNT 6.0\tvendor:0x8086\tdevices:0x2582,0x2782\tfeature:DIRECT3D_10_LAYERS\tfeatureStatus:BLOCKED_DRIVER_VERSION\tdriverVersion:8.52.322.2202\tdriverVersionComparator:LESS_THAN_OR_EQUAL
 594 */
 595 static bool BlocklistEntryToDriverInfo(const nsACString& aBlocklistEntry,
 596                                        GfxDriverInfo& aDriverInfo) {
 597   // If we get an application version to be zero, something is not working
 598   // and we are not going to bother checking the blocklist versions.
 599   // See TestGfxWidgets.cpp for how version comparison works.
 600   // <versionRange minVersion="42.0a1" maxVersion="45.0"></versionRange>
 601   static mozilla::Version zeroV("0");
 602   static mozilla::Version appV(GfxInfoBase::GetApplicationVersion().get());
 603   if (appV <= zeroV) {
 604     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 605         << "Invalid application version "
 606         << GfxInfoBase::GetApplicationVersion().get();
 607   }
 608
 609   aDriverInfo.mRuleId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID"_ns;
 610
 611   for (const auto& keyValue : aBlocklistEntry.Split('\t')) {
 612     nsTArray<nsCString> splitted;
 613     ParseString(keyValue, ':', splitted);
 614     if (splitted.Length() != 2) {
 615       // If we don't recognize the input data, we do not want to proceed.
 616       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 617           << "Unrecognized data " << nsCString(keyValue).get();
 618       return false;
 619     }
 620     const nsCString& key = splitted[0];
 621     const nsCString& value = splitted[1];
 622     NS_ConvertUTF8toUTF16 dataValue(value);
 623
 624     if (value.Length() == 0) {
 625       // Safety check for empty values.
 626       gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 627           << "Empty value for " << key.get();
 628       return false;
 629     }
 630
 631     if (key.EqualsLiteral("blockID")) {
 632       nsCString blockIdStr = "FEATURE_FAILURE_DL_BLOCKLIST_"_ns + value;
 633       aDriverInfo.mRuleId = blockIdStr.get();
 634     } else if (key.EqualsLiteral("os")) {
 635       aDriverInfo.mOperatingSystem = BlocklistOSToOperatingSystem(dataValue);
 636     } else if (key.EqualsLiteral("osversion")) {
 637       aDriverInfo.mOperatingSystemVersion = strtoul(value.get(), nullptr, 10);
 638     } else if (key.EqualsLiteral("desktopEnvironment")) {
 639       aDriverInfo.mDesktopEnvironment = dataValue;
 640     } else if (key.EqualsLiteral("windowProtocol")) {
 641       aDriverInfo.mWindowProtocol = dataValue;
 642     } else if (key.EqualsLiteral("vendor")) {
 643       aDriverInfo.mAdapterVendor = dataValue;
 644     } else if (key.EqualsLiteral("driverVendor")) {
 645       aDriverInfo.mDriverVendor = dataValue;
 646     } else if (key.EqualsLiteral("feature")) {
 647       aDriverInfo.mFeature = BlocklistFeatureToGfxFeature(dataValue);
 648       if (aDriverInfo.mFeature < 0) {
 649         // If we don't recognize the feature, we do not want to proceed.
 650         gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 651             << "Unrecognized feature " << value.get();
 652         return false;
 653       }
 654     } else if (key.EqualsLiteral("featureStatus")) {
 655       aDriverInfo.mFeatureStatus =
 656           BlocklistFeatureStatusToGfxFeatureStatus(dataValue);
 657     } else if (key.EqualsLiteral("driverVersion")) {
 658       uint64_t version;
 659       if (ParseDriverVersion(dataValue, &version))
 660         aDriverInfo.mDriverVersion = version;
 661     } else if (key.EqualsLiteral("driverVersionMax")) {
 662       uint64_t version;
 663       if (ParseDriverVersion(dataValue, &version))
 664         aDriverInfo.mDriverVersionMax = version;
 665     } else if (key.EqualsLiteral("driverVersionComparator")) {
 666       aDriverInfo.mComparisonOp = BlocklistComparatorToComparisonOp(dataValue);
 667     } else if (key.EqualsLiteral("model")) {
 668       aDriverInfo.mModel = dataValue;
 669     } else if (key.EqualsLiteral("product")) {
 670       aDriverInfo.mProduct = dataValue;
 671     } else if (key.EqualsLiteral("manufacturer")) {
 672       aDriverInfo.mManufacturer = dataValue;
 673     } else if (key.EqualsLiteral("hardware")) {
 674       aDriverInfo.mHardware = dataValue;
 675     } else if (key.EqualsLiteral("versionRange")) {
 676       nsTArray<nsCString> versionRange;
 677       ParseString(value, ',', versionRange);
 678       if (versionRange.Length() != 2) {
 679         gfxCriticalErrorOnce(CriticalLog::DefaultOptions(false))
 680             << "Unrecognized versionRange " << value.get();
 681         return false;
 682       }
 683       const nsCString& minValue = versionRange[0];
 684       const nsCString& maxValue = versionRange[1];
 685
 686       mozilla::Version minV(minValue.get());
 687       mozilla::Version maxV(maxValue.get());
 688
 689       if (minV > zeroV && !(appV >= minV)) {
 690         // The version of the application is less than the minimal version
 691         // this blocklist entry applies to, so we can just ignore it by
 692         // returning false and letting the caller deal with it.
 693         return false;
 694       }
 695       if (maxV > zeroV && !(appV <= maxV)) {
 696         // The version of the application is more than the maximal version
 697         // this blocklist entry applies to, so we can just ignore it by
 698         // returning false and letting the caller deal with it.
 699         return false;
 700       }
 701     } else if (key.EqualsLiteral("devices")) {
 702       nsTArray<nsCString> devices;
 703       ParseString(value, ',', devices);
 704       GfxDeviceFamily* deviceIds = BlocklistDevicesToDeviceFamily(devices);
 705       if (deviceIds) {
 706         // Get GfxDriverInfo to adopt the devices array we created.
 707         aDriverInfo.mDeleteDevices = true;
 708         aDriverInfo.mDevices = deviceIds;
 709       }
 710     }
 711     // We explicitly ignore unknown elements.
 712   }
 713
 714   return true;
 715 }
 716
 717 NS_IMETHODIMP
 718 GfxInfoBase::Observe(nsISupports* aSubject, const char* aTopic,
 719                      const char16_t* aData) {
 720   if (strcmp(aTopic, "blocklist-data-gfxItems") == 0) {
 721     nsTArray<GfxDriverInfo> driverInfo;
 722     NS_ConvertUTF16toUTF8 utf8Data(aData);
 723
 724     for (const auto& blocklistEntry : utf8Data.Split('\n')) {
 725       GfxDriverInfo di;
 726       if (BlocklistEntryToDriverInfo(blocklistEntry, di)) {
 727         // XXX Changing this to driverInfo.AppendElement(di) causes leaks.
 728         // Probably some non-standard semantics of the copy/move operations?
 729         *driverInfo.AppendElement() = di;
 730         // Prevent di falling out of scope from destroying the devices.
 731         di.mDeleteDevices = false;
 732       } else {
 733         driverInfo.AppendElement();
 734       }
 735     }
 736
 737     EvaluateDownloadedBlocklist(driverInfo);
 738   }
 739
 740   return NS_OK;
 741 }
 742
 743 GfxInfoBase::GfxInfoBase() : mScreenPixels(INT64_MAX), mMutex("GfxInfoBase") {}
 744
 745 GfxInfoBase::~GfxInfoBase() = default;
 746
 747 nsresult GfxInfoBase::Init() {
 748   InitGfxDriverInfoShutdownObserver();
 749
 750   nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
 751   if (os) {
 752     os->AddObserver(this, "blocklist-data-gfxItems", true);
 753   }
 754
 755   return NS_OK;
 756 }
 757
 758 void GfxInfoBase::GetData() {
 759   if (mScreenPixels != INT64_MAX) {
 760     // Already initialized.
 761     return;
 762   }
 763
 764   nsCOMPtr<nsIScreenManager> manager =
 765       do_GetService("@mozilla.org/gfx/screenmanager;1");
 766   if (!manager) {
 767     MOZ_ASSERT_UNREACHABLE("failed to get nsIScreenManager");
 768     return;
 769   }
 770
 771   manager->GetTotalScreenPixels(&mScreenPixels);
 772 }
 773
 774 NS_IMETHODIMP
 775 GfxInfoBase::GetFeatureStatus(int32_t aFeature, nsACString& aFailureId,
 776                               int32_t* aStatus) {
 777   // Ignore the gfx.blocklist.all pref on release and beta.
 778 #if defined(RELEASE_OR_BETA)
 779   int32_t blocklistAll = 0;
 780 #else
 781   int32_t blocklistAll = StaticPrefs::gfx_blocklist_all_AtStartup();
 782 #endif
 783   if (blocklistAll > 0) {
 784     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 785         << "Forcing blocklisting all features";
 786     *aStatus = FEATURE_BLOCKED_DEVICE;
 787     aFailureId = "FEATURE_FAILURE_BLOCK_ALL";
 788     return NS_OK;
 789   }
 790
 791   if (blocklistAll < 0) {
 792     gfxCriticalErrorOnce(gfxCriticalError::DefaultOptions(false))
 793         << "Ignoring any feature blocklisting.";
 794     *aStatus = FEATURE_STATUS_OK;
 795     return NS_OK;
 796   }
 797
 798   if (GetPrefValueForFeature(aFeature, *aStatus, aFailureId)) {
 799     return NS_OK;
 800   }
 801
 802   if (XRE_IsContentProcess() || XRE_IsGPUProcess()) {
 803     // Use the cached data received from the parent process.
 804     MOZ_ASSERT(sFeatureStatus);
 805     bool success = false;
 806     for (const auto& fs : *sFeatureStatus) {
 807       if (fs.feature() == aFeature) {
 808         aFailureId = fs.failureId();
 809         *aStatus = fs.status();
 810         success = true;
 811         break;
 812       }
 813     }
 814     return success ? NS_OK : NS_ERROR_FAILURE;
 815   }
 816
 817   nsString version;
 818   nsTArray<GfxDriverInfo> driverInfo;
 819   nsresult rv =
 820       GetFeatureStatusImpl(aFeature, aStatus, version, driverInfo, aFailureId);
 821   return rv;
 822 }
 823
 824 nsTArray<gfx::GfxInfoFeatureStatus> GfxInfoBase::GetAllFeatures() {
 825   MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
 826   if (!sFeatureStatus) {
 827     InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>());
 828     for (int32_t i = 1; i <= nsIGfxInfo::FEATURE_MAX_VALUE; ++i) {
 829       int32_t status = 0;
 830       nsAutoCString failureId;
 831       GetFeatureStatus(i, failureId, &status);
 832       gfx::GfxInfoFeatureStatus gfxFeatureStatus;
 833       gfxFeatureStatus.feature() = i;
 834       gfxFeatureStatus.status() = status;
 835       gfxFeatureStatus.failureId() = failureId;
 836       sFeatureStatus->AppendElement(gfxFeatureStatus);
 837     }
 838   }
 839
 840   nsTArray<gfx::GfxInfoFeatureStatus> features;
 841   for (const auto& status : *sFeatureStatus) {
 842     gfx::GfxInfoFeatureStatus copy = status;
 843     features.AppendElement(copy);
 844   }
 845   return features;
 846 }
 847
 848 inline bool MatchingAllowStatus(int32_t aStatus) {
 849   switch (aStatus) {
 850     case nsIGfxInfo::FEATURE_ALLOW_ALWAYS:
 851     case nsIGfxInfo::FEATURE_ALLOW_QUALIFIED:
 852       return true;
 853     default:
 854       return false;
 855   }
 856 }
 857
 858 // Matching OS go somewhat beyond the simple equality check because of the
 859 // "All Windows" and "All OS X" variations.
 860 //
 861 // aBlockedOS is describing the system(s) we are trying to block.
 862 // aSystemOS is describing the system we are running on.
 863 //
 864 // aSystemOS should not be "Windows" or "OSX" - it should be set to
 865 // a particular version instead.
 866 // However, it is valid for aBlockedOS to be one of those generic values,
 867 // as we could be blocking all of the versions.
 868 inline bool MatchingOperatingSystems(OperatingSystem aBlockedOS,
 869                                      OperatingSystem aSystemOS,
 870                                      uint32_t aSystemOSBuild) {
 871   MOZ_ASSERT(aSystemOS != OperatingSystem::Windows &&
 872              aSystemOS != OperatingSystem::OSX);
 873
 874   // If the block entry OS is unknown, it doesn't match
 875   if (aBlockedOS == OperatingSystem::Unknown) {
 876     return false;
 877   }
 878
 879 #if defined(XP_WIN)
 880   if (aBlockedOS == OperatingSystem::Windows) {
 881     // We do want even "unknown" aSystemOS to fall under "all windows"
 882     return true;
 883   }
 884
 885   constexpr uint32_t kMinWin10BuildNumber = 18362;
 886   if (aBlockedOS == OperatingSystem::RecentWindows10 &&
 887       aSystemOS == OperatingSystem::Windows10) {
 888     // For allowlist purposes, we sometimes want to restrict to only recent
 889     // versions of Windows 10. This is a bit of a kludge but easier than adding
 890     // complicated blocklist infrastructure for build ID comparisons like driver
 891     // versions.
 892     return aSystemOSBuild >= kMinWin10BuildNumber;
 893   }
 894
 895   if (aBlockedOS == OperatingSystem::NotRecentWindows10) {
 896     if (aSystemOS == OperatingSystem::Windows10) {
 897       return aSystemOSBuild < kMinWin10BuildNumber;
 898     } else {
 899       return true;
 900     }
 901   }
 902 #endif
 903
 904 #if defined(XP_MACOSX)
 905   if (aBlockedOS == OperatingSystem::OSX) {
 906     // We do want even "unknown" aSystemOS to fall under "all OS X"
 907     return true;
 908   }
 909 #endif
 910
 911   return aSystemOS == aBlockedOS;
 912 }
 913
 914 inline bool MatchingBattery(BatteryStatus aBatteryStatus, bool aHasBattery) {
 915   switch (aBatteryStatus) {
 916     case BatteryStatus::All:
 917       return true;
 918     case BatteryStatus::None:
 919       return !aHasBattery;
 920     case BatteryStatus::Present:
 921       return aHasBattery;
 922   }
 923
 924   MOZ_ASSERT_UNREACHABLE("bad battery status");
 925   return false;
 926 }
 927
 928 inline bool MatchingScreenSize(ScreenSizeStatus aScreenStatus,
 929                                int64_t aScreenPixels) {
 930   constexpr int64_t kMaxSmallPixels = 2304000;   // 1920x1200
 931   constexpr int64_t kMaxMediumPixels = 4953600;  // 3440x1440
 932
 933   switch (aScreenStatus) {
 934     case ScreenSizeStatus::All:
 935       return true;
 936     case ScreenSizeStatus::Small:
 937       return aScreenPixels <= kMaxSmallPixels;
 938     case ScreenSizeStatus::SmallAndMedium:
 939       return aScreenPixels <= kMaxMediumPixels;
 940     case ScreenSizeStatus::Medium:
 941       return aScreenPixels > kMaxSmallPixels &&
 942              aScreenPixels <= kMaxMediumPixels;
 943     case ScreenSizeStatus::MediumAndLarge:
 944       return aScreenPixels > kMaxSmallPixels;
 945     case ScreenSizeStatus::Large:
 946       return aScreenPixels > kMaxMediumPixels;
 947   }
 948
 949   MOZ_ASSERT_UNREACHABLE("bad screen status");
 950   return false;
 951 }
 952
 953 int32_t GfxInfoBase::FindBlocklistedDeviceInList(
 954     const nsTArray<GfxDriverInfo>& info, nsAString& aSuggestedVersion,
 955     int32_t aFeature, nsACString& aFailureId, OperatingSystem os,
 956     bool aForAllowing) {
 957   int32_t status = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;
 958
 959   // Some properties are not available on all platforms.
 960   nsAutoString desktopEnvironment;
 961   nsresult rv = GetDesktopEnvironment(desktopEnvironment);
 962   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 963     return 0;
 964   }
 965
 966   nsAutoString windowProtocol;
 967   rv = GetWindowProtocol(windowProtocol);
 968   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 969     return 0;
 970   }
 971
 972   bool hasBattery = false;
 973   rv = GetHasBattery(&hasBattery);
 974   if (NS_FAILED(rv) && rv != NS_ERROR_NOT_IMPLEMENTED) {
 975     return 0;
 976   }
 977
 978   uint32_t osBuild = OperatingSystemBuild();
 979
 980   // Get the adapters once then reuse below
 981   nsAutoString adapterVendorID[2];
 982   nsAutoString adapterDeviceID[2];
 983   nsAutoString adapterDriverVendor[2];
 984   nsAutoString adapterDriverVersionString[2];
 985   bool adapterInfoFailed[2];
 986
 987   adapterInfoFailed[0] =
 988       (NS_FAILED(GetAdapterVendorID(adapterVendorID[0])) ||
 989        NS_FAILED(GetAdapterDeviceID(adapterDeviceID[0])) ||
 990        NS_FAILED(GetAdapterDriverVendor(adapterDriverVendor[0])) ||
 991        NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString[0])));
 992   adapterInfoFailed[1] =
 993       (NS_FAILED(GetAdapterVendorID2(adapterVendorID[1])) ||
 994        NS_FAILED(GetAdapterDeviceID2(adapterDeviceID[1])) ||
 995        NS_FAILED(GetAdapterDriverVendor2(adapterDriverVendor[1])) ||
 996        NS_FAILED(GetAdapterDriverVersion2(adapterDriverVersionString[1])));
 997   // No point in going on if we don't have adapter info
 998   if (adapterInfoFailed[0] && adapterInfoFailed[1]) {
 999     return 0;
1000   }
1001
1002 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
1003   uint64_t driverVersion[2] = {0, 0};
1004   if (!adapterInfoFailed[0]) {
1005     ParseDriverVersion(adapterDriverVersionString[0], &driverVersion[0]);
1006   }
1007   if (!adapterInfoFailed[1]) {
1008     ParseDriverVersion(adapterDriverVersionString[1], &driverVersion[1]);
1009   }
1010 #endif
1011
1012   uint32_t i = 0;
1013   for (; i < info.Length(); i++) {
1014     // If the status is FEATURE_ALLOW_*, then it is for the allowlist, not
1015     // blocklisting. Only consider entries for our search mode.
1016     if (MatchingAllowStatus(info[i].mFeatureStatus) != aForAllowing) {
1017       continue;
1018     }
1019
1020     // If we don't have the info for this GPU, no need to check further.
1021     // It is unclear that we would ever have a mixture of 1st and 2nd
1022     // GPU, but leaving the code in for that possibility for now.
1023     // (Actually, currently mGpu2 will never be true, so this can
1024     // be optimized out.)
1025     uint32_t infoIndex = info[i].mGpu2 ? 1 : 0;
1026     if (adapterInfoFailed[infoIndex]) {
1027       continue;
1028     }
1029
1030     // Do the operating system check first, no point in getting the driver
1031     // info if we won't need to use it.
1032     if (!MatchingOperatingSystems(info[i].mOperatingSystem, os, osBuild)) {
1033       continue;
1034     }
1035
1036     if (info[i].mOperatingSystemVersion &&
1037         info[i].mOperatingSystemVersion != OperatingSystemVersion()) {
1038       continue;
1039     }
1040
1041     if (!MatchingBattery(info[i].mBattery, hasBattery)) {
1042       continue;
1043     }
1044
1045     if (!MatchingScreenSize(info[i].mScreen, mScreenPixels)) {
1046       continue;
1047     }
1048
1049     if (!DoesDesktopEnvironmentMatch(info[i].mDesktopEnvironment,
1050                                      desktopEnvironment)) {
1051       continue;
1052     }
1053
1054     if (!DoesWindowProtocolMatch(info[i].mWindowProtocol, windowProtocol)) {
1055       continue;
1056     }
1057
1058     if (!DoesVendorMatch(info[i].mAdapterVendor, adapterVendorID[infoIndex])) {
1059       continue;
1060     }
1061
1062     if (!DoesDriverVendorMatch(info[i].mDriverVendor,
1063                                adapterDriverVendor[infoIndex])) {
1064       continue;
1065     }
1066
1067     if (info[i].mDevices && !info[i].mDevices->IsEmpty()) {
1068       nsresult rv = info[i].mDevices->Contains(adapterDeviceID[infoIndex]);
1069       if (rv == NS_ERROR_NOT_AVAILABLE) {
1070         // Not found
1071         continue;
1072       }
1073       if (rv != NS_OK) {
1074         // Failed to search, allowlist should not match, blocklist should match
1075         // for safety reasons
1076         if (aForAllowing) {
1077           continue;
1078         }
1079         break;
1080       }
1081     }
1082
1083     bool match = false;
1084
1085     if (!info[i].mHardware.IsEmpty() && !info[i].mHardware.Equals(Hardware())) {
1086       continue;
1087     }
1088     if (!info[i].mModel.IsEmpty() && !info[i].mModel.Equals(Model())) {
1089       continue;
1090     }
1091     if (!info[i].mProduct.IsEmpty() && !info[i].mProduct.Equals(Product())) {
1092       continue;
1093     }
1094     if (!info[i].mManufacturer.IsEmpty() &&
1095         !info[i].mManufacturer.Equals(Manufacturer())) {
1096       continue;
1097     }
1098
1099 #if defined(XP_WIN) || defined(ANDROID) || defined(MOZ_WIDGET_GTK)
1100     switch (info[i].mComparisonOp) {
1101       case DRIVER_LESS_THAN:
1102         match = driverVersion[infoIndex] < info[i].mDriverVersion;
1103         break;
1104       case DRIVER_BUILD_ID_LESS_THAN:
1105         match = (driverVersion[infoIndex] & 0xFFFF) < info[i].mDriverVersion;
1106         break;
1107       case DRIVER_LESS_THAN_OR_EQUAL:
1108         match = driverVersion[infoIndex] <= info[i].mDriverVersion;
1109         break;
1110       case DRIVER_BUILD_ID_LESS_THAN_OR_EQUAL:
1111         match = (driverVersion[infoIndex] & 0xFFFF) <= info[i].mDriverVersion;
1112         break;
1113       case DRIVER_GREATER_THAN:
1114         match = driverVersion[infoIndex] > info[i].mDriverVersion;
1115         break;
1116       case DRIVER_GREATER_THAN_OR_EQUAL:
1117         match = driverVersion[infoIndex] >= info[i].mDriverVersion;
1118         break;
1119       case DRIVER_EQUAL:
1120         match = driverVersion[infoIndex] == info[i].mDriverVersion;
1121         break;
1122       case DRIVER_NOT_EQUAL:
1123         match = driverVersion[infoIndex] != info[i].mDriverVersion;
1124         break;
1125       case DRIVER_BETWEEN_EXCLUSIVE:
1126         match = driverVersion[infoIndex] > info[i].mDriverVersion &&
1127                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1128         break;
1129       case DRIVER_BETWEEN_INCLUSIVE:
1130         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1131                 driverVersion[infoIndex] <= info[i].mDriverVersionMax;
1132         break;
1133       case DRIVER_BETWEEN_INCLUSIVE_START:
1134         match = driverVersion[infoIndex] >= info[i].mDriverVersion &&
1135                 driverVersion[infoIndex] < info[i].mDriverVersionMax;
1136         break;
1137       case DRIVER_COMPARISON_IGNORED:
1138         // We don't have a comparison op, so we match everything.
1139         match = true;
1140         break;
1141       default:
1142         NS_WARNING("Bogus op in GfxDriverInfo");
1143         break;
1144     }
1145 #else
1146     // We don't care what driver version it was. We only check OS version and if
1147     // the device matches.
1148     match = true;
1149 #endif
1150
1151     if (match || info[i].mDriverVersion == GfxDriverInfo::allDriverVersions) {
1152       if (info[i].mFeature == GfxDriverInfo::allFeatures ||
1153           info[i].mFeature == aFeature) {
1154         status = info[i].mFeatureStatus;
1155         if (!info[i].mRuleId.IsEmpty()) {
1156           aFailureId = info[i].mRuleId.get();
1157         } else {
1158           aFailureId = "FEATURE_FAILURE_DL_BLOCKLIST_NO_ID";
1159         }
1160         break;
1161       }
1162     }
1163   }
1164
1165 #if defined(XP_WIN)
1166   // As a very special case, we block D2D on machines with an NVidia 310M GPU
1167   // as either the primary or secondary adapter.  D2D is also blocked when the
1168   // NV 310M is the primary adapter (using the standard blocklisting mechanism).
1169   // If the primary GPU already matched something in the blocklist then we
1170   // ignore this special rule.  See bug 1008759.
1171   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN &&
1172       (aFeature == nsIGfxInfo::FEATURE_DIRECT2D)) {
1173     if (!adapterInfoFailed[1]) {
1174       nsAString& nvVendorID =
1175           (nsAString&)GfxDriverInfo::GetDeviceVendor(DeviceVendor::NVIDIA);
1176       const nsString nv310mDeviceId = u"0x0A70"_ns;
1177       if (nvVendorID.Equals(adapterVendorID[1],
1178                             nsCaseInsensitiveStringComparator) &&
1179           nv310mDeviceId.Equals(adapterDeviceID[1],
1180                                 nsCaseInsensitiveStringComparator)) {
1181         status = nsIGfxInfo::FEATURE_BLOCKED_DEVICE;
1182         aFailureId = "FEATURE_FAILURE_D2D_NV310M_BLOCK";
1183       }
1184     }
1185   }
1186
1187   // Depends on Windows driver versioning. We don't pass a GfxDriverInfo object
1188   // back to the Windows handler, so we must handle this here.
1189   if (status == FEATURE_BLOCKED_DRIVER_VERSION) {
1190     if (info[i].mSuggestedVersion) {
1191       aSuggestedVersion.AppendPrintf("%s", info[i].mSuggestedVersion);
1192     } else if (info[i].mComparisonOp == DRIVER_LESS_THAN &&
1193                info[i].mDriverVersion != GfxDriverInfo::allDriverVersions) {
1194       aSuggestedVersion.AppendPrintf(
1195           "%lld.%lld.%lld.%lld",
1196           (info[i].mDriverVersion & 0xffff000000000000) >> 48,
1197           (info[i].mDriverVersion & 0x0000ffff00000000) >> 32,
1198           (info[i].mDriverVersion & 0x00000000ffff0000) >> 16,
1199           (info[i].mDriverVersion & 0x000000000000ffff));
1200     }
1201   }
1202 #endif
1203
1204   return status;
1205 }
1206
1207 void GfxInfoBase::SetFeatureStatus(nsTArray<gfx::GfxInfoFeatureStatus>&& aFS) {
1208   MOZ_ASSERT(!sFeatureStatus);
1209   InitFeatureStatus(new nsTArray<gfx::GfxInfoFeatureStatus>(std::move(aFS)));
1210 }
1211
1212 bool GfxInfoBase::DoesDesktopEnvironmentMatch(
1213     const nsAString& aBlocklistDesktop, const nsAString& aDesktopEnv) {
1214   return aBlocklistDesktop.Equals(aDesktopEnv,
1215                                   nsCaseInsensitiveStringComparator) ||
1216          aBlocklistDesktop.Equals(
1217              GfxDriverInfo::GetDesktopEnvironment(DesktopEnvironment::All),
1218              nsCaseInsensitiveStringComparator);
1219 }
1220
1221 bool GfxInfoBase::DoesWindowProtocolMatch(
1222     const nsAString& aBlocklistWindowProtocol,
1223     const nsAString& aWindowProtocol) {
1224   return aBlocklistWindowProtocol.Equals(aWindowProtocol,
1225                                          nsCaseInsensitiveStringComparator) ||
1226          aBlocklistWindowProtocol.Equals(
1227              GfxDriverInfo::GetWindowProtocol(WindowProtocol::All),
1228              nsCaseInsensitiveStringComparator);
1229 }
1230
1231 bool GfxInfoBase::DoesVendorMatch(const nsAString& aBlocklistVendor,
1232                                   const nsAString& aAdapterVendor) {
1233   return aBlocklistVendor.Equals(aAdapterVendor,
1234                                  nsCaseInsensitiveStringComparator) ||
1235          aBlocklistVendor.Equals(
1236              GfxDriverInfo::GetDeviceVendor(DeviceVendor::All),
1237              nsCaseInsensitiveStringComparator);
1238 }
1239
1240 bool GfxInfoBase::DoesDriverVendorMatch(const nsAString& aBlocklistVendor,
1241                                         const nsAString& aDriverVendor) {
1242   return aBlocklistVendor.Equals(aDriverVendor,
1243                                  nsCaseInsensitiveStringComparator) ||
1244          aBlocklistVendor.Equals(
1245              GfxDriverInfo::GetDriverVendor(DriverVendor::All),
1246              nsCaseInsensitiveStringComparator);
1247 }
1248
1249 bool GfxInfoBase::IsFeatureAllowlisted(int32_t aFeature) const {
1250   return aFeature == nsIGfxInfo::FEATURE_WEBRENDER;
1251 }
1252
1253 nsresult GfxInfoBase::GetFeatureStatusImpl(
1254     int32_t aFeature, int32_t* aStatus, nsAString& aSuggestedVersion,
1255     const nsTArray<GfxDriverInfo>& aDriverInfo, nsACString& aFailureId,
1256     OperatingSystem* aOS /* = nullptr */) {
1257   if (aFeature <= 0) {
1258     gfxWarning() << "Invalid feature <= 0";
1259     return NS_OK;
1260   }
1261
1262   if (*aStatus != nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1263     // Terminate now with the status determined by the derived type (OS-specific
1264     // code).
1265     return NS_OK;
1266   }
1267
1268   if (sShutdownOccurred) {
1269     // This is futile; we've already commenced shutdown and our blocklists have
1270     // been deleted. We may want to look into resurrecting the blocklist instead
1271     // but for now, just don't even go there.
1272     return NS_OK;
1273   }
1274
1275   // Ensure any additional initialization required is complete.
1276   GetData();
1277
1278   // If an operating system was provided by the derived GetFeatureStatusImpl,
1279   // grab it here. Otherwise, the OS is unknown.
1280   OperatingSystem os = (aOS ? *aOS : OperatingSystem::Unknown);
1281
1282   nsAutoString adapterVendorID;
1283   nsAutoString adapterDeviceID;
1284   nsAutoString adapterDriverVersionString;
1285   if (NS_FAILED(GetAdapterVendorID(adapterVendorID)) ||
1286       NS_FAILED(GetAdapterDeviceID(adapterDeviceID)) ||
1287       NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString))) {
1288     aFailureId = "FEATURE_FAILURE_CANT_RESOLVE_ADAPTER";
1289     *aStatus = FEATURE_BLOCKED_DEVICE;
1290     return NS_OK;
1291   }
1292
1293   // Check if the device is blocked from the downloaded blocklist. If not, check
1294   // the static list after that. This order is used so that we can later escape
1295   // out of static blocks (i.e. if we were wrong or something was patched, we
1296   // can back out our static block without doing a release).
1297   int32_t status;
1298   if (aDriverInfo.Length()) {
1299     status =
1300         FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion, aFeature,
1301                                     aFailureId, os, /* aForAllowing */ false);
1302   } else {
1303     if (!sDriverInfo) {
1304       sDriverInfo = new nsTArray<GfxDriverInfo>();
1305     }
1306     status = FindBlocklistedDeviceInList(GetGfxDriverInfo(), aSuggestedVersion,
1307                                          aFeature, aFailureId, os,
1308                                          /* aForAllowing */ false);
1309   }
1310
1311   if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1312     if (IsFeatureAllowlisted(aFeature)) {
1313       // This feature is actually using the allowlist; that means after we pass
1314       // the blocklist to prevent us explicitly from getting the feature, we now
1315       // need to check the allowlist to ensure we are allowed to get it in the
1316       // first place.
1317       if (aDriverInfo.Length()) {
1318         status = FindBlocklistedDeviceInList(aDriverInfo, aSuggestedVersion,
1319                                              aFeature, aFailureId, os,
1320                                              /* aForAllowing */ true);
1321       } else {
1322         status = FindBlocklistedDeviceInList(
1323             GetGfxDriverInfo(), aSuggestedVersion, aFeature, aFailureId, os,
1324             /* aForAllowing */ true);
1325       }
1326
1327       if (status == nsIGfxInfo::FEATURE_STATUS_UNKNOWN) {
1328         status = nsIGfxInfo::FEATURE_DENIED;
1329       }
1330     } else {
1331       // It's now done being processed. It's safe to set the status to
1332       // STATUS_OK.
1333       status = nsIGfxInfo::FEATURE_STATUS_OK;
1334     }
1335   }
1336
1337   *aStatus = status;
1338   return NS_OK;
1339 }
1340
1341 NS_IMETHODIMP
1342 GfxInfoBase::GetFeatureSuggestedDriverVersion(int32_t aFeature,
1343                                               nsAString& aVersion) {
1344   nsCString version;
1345   if (GetPrefValueForDriverVersion(version)) {
1346     aVersion = NS_ConvertASCIItoUTF16(version);
1347     return NS_OK;
1348   }
1349
1350   int32_t status;
1351   nsCString discardFailureId;
1352   nsTArray<GfxDriverInfo> driverInfo;
1353   return GetFeatureStatusImpl(aFeature, &status, aVersion, driverInfo,
1354                               discardFailureId);
1355 }
1356
1357 void GfxInfoBase::EvaluateDownloadedBlocklist(
1358     nsTArray<GfxDriverInfo>& aDriverInfo) {
1359   int32_t features[] = {nsIGfxInfo::FEATURE_DIRECT2D,
1360                         nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS,
1361                         nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS,
1362                         nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS,
1363                         nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS,
1364                         nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE,
1365                         nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING,
1366                         nsIGfxInfo::FEATURE_OPENGL_LAYERS,
1367                         nsIGfxInfo::FEATURE_WEBGL_OPENGL,
1368                         nsIGfxInfo::FEATURE_WEBGL_ANGLE,
1369                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE,
1370                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE,
1371                         nsIGfxInfo::UNUSED_FEATURE_WEBGL_MSAA,
1372                         nsIGfxInfo::FEATURE_STAGEFRIGHT,
1373                         nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_H264,
1374                         nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION,
1375                         nsIGfxInfo::FEATURE_VP8_HW_DECODE,
1376                         nsIGfxInfo::FEATURE_VP9_HW_DECODE,
1377                         nsIGfxInfo::FEATURE_DX_INTEROP2,
1378                         nsIGfxInfo::FEATURE_GPU_PROCESS,
1379                         nsIGfxInfo::FEATURE_WEBGL2,
1380                         nsIGfxInfo::FEATURE_D3D11_KEYED_MUTEX,
1381                         nsIGfxInfo::FEATURE_WEBRENDER,
1382                         nsIGfxInfo::FEATURE_WEBRENDER_COMPOSITOR,
1383                         nsIGfxInfo::FEATURE_DX_NV12,
1384                         nsIGfxInfo::FEATURE_DX_P010,
1385                         nsIGfxInfo::FEATURE_DX_P016,
1386                         nsIGfxInfo::FEATURE_GL_SWIZZLE,
1387                         nsIGfxInfo::FEATURE_ALLOW_WEBGL_OUT_OF_PROCESS,
1388                         nsIGfxInfo::FEATURE_X11_EGL,
1389                         nsIGfxInfo::FEATURE_DMABUF,
1390                         nsIGfxInfo::FEATURE_VAAPI,
1391                         nsIGfxInfo::FEATURE_WEBGPU,
1392                         nsIGfxInfo::FEATURE_WEBRENDER_PARTIAL_PRESENT,
1393                         0};
1394
1395   // For every feature we know about, we evaluate whether this blocklist has a
1396   // non-STATUS_OK status. If it does, we set the pref we evaluate in
1397   // GetFeatureStatus above, so we don't need to hold on to this blocklist
1398   // anywhere permanent.
1399   int i = 0;
1400   while (features[i]) {
1401     int32_t status;
1402     nsCString failureId;
1403     nsAutoString suggestedVersion;
1404     if (NS_SUCCEEDED(GetFeatureStatusImpl(
1405             features[i], &status, suggestedVersion, aDriverInfo, failureId))) {
1406       switch (status) {
1407         default:
1408         case nsIGfxInfo::FEATURE_STATUS_OK:
1409           RemovePrefForFeature(features[i]);
1410           break;
1411
1412         case nsIGfxInfo::FEATURE_BLOCKED_DRIVER_VERSION:
1413           if (!suggestedVersion.IsEmpty()) {
1414             SetPrefValueForDriverVersion(suggestedVersion);
1415           } else {
1416             RemovePrefForDriverVersion();
1417           }
1418           [[fallthrough]];
1419
1420         case nsIGfxInfo::FEATURE_BLOCKED_MISMATCHED_VERSION:
1421         case nsIGfxInfo::FEATURE_BLOCKED_DEVICE:
1422         case nsIGfxInfo::FEATURE_DISCOURAGED:
1423         case nsIGfxInfo::FEATURE_BLOCKED_OS_VERSION:
1424           SetPrefValueForFeature(features[i], status, failureId);
1425           break;
1426       }
1427     }
1428
1429     ++i;
1430   }
1431 }
1432
1433 NS_IMETHODIMP_(void)
1434 GfxInfoBase::LogFailure(const nsACString& failure) {
1435   // gfxCriticalError has a mutex lock of its own, so we may not actually
1436   // need this lock. ::GetFailures() accesses the data but the LogForwarder
1437   // will not return the copy of the logs unless it can get the same lock
1438   // that gfxCriticalError uses.  Still, that is so much of an implementation
1439   // detail that it's nicer to just add an extra lock here and in
1440   // ::GetFailures()
1441   MutexAutoLock lock(mMutex);
1442
1443   // By default, gfxCriticalError asserts; make it not assert in this case.
1444   gfxCriticalError(CriticalLog::DefaultOptions(false))
1445       << "(LF) " << failure.BeginReading();
1446 }
1447
1448 NS_IMETHODIMP GfxInfoBase::GetFailures(nsTArray<int32_t>& indices,
1449                                        nsTArray<nsCString>& failures) {
1450   MutexAutoLock lock(mMutex);
1451
1452   LogForwarder* logForwarder = Factory::GetLogForwarder();
1453   if (!logForwarder) {
1454     return NS_ERROR_UNEXPECTED;
1455   }
1456
1457   // There are two string copies in this method, starting with this one. We are
1458   // assuming this is not a big deal, as the size of the array should be small
1459   // and the strings in it should be small as well (the error messages in the
1460   // code.)  The second copy happens with the AppendElement() calls.
1461   // Technically, we don't need the mutex lock after the StringVectorCopy()
1462   // call.
1463   LoggingRecord loggedStrings = logForwarder->LoggingRecordCopy();
1464   LoggingRecord::const_iterator it;
1465   for (it = loggedStrings.begin(); it != loggedStrings.end(); ++it) {
1466     failures.AppendElement(
1467         nsDependentCSubstring(Get<1>(*it).c_str(), Get<1>(*it).size()));
1468     indices.AppendElement(Get<0>(*it));
1469   }
1470
1471   return NS_OK;
1472 }
1473
1474 nsTArray<GfxInfoCollectorBase*>* sCollectors;
1475
1476 static void InitCollectors() {
1477   if (!sCollectors) sCollectors = new nsTArray<GfxInfoCollectorBase*>;
1478 }
1479
1480 nsresult GfxInfoBase::GetInfo(JSContext* aCx,
1481                               JS::MutableHandle<JS::Value> aResult) {
1482   InitCollectors();
1483   InfoObject obj(aCx);
1484
1485   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1486     (*sCollectors)[i]->GetInfo(obj);
1487   }
1488
1489   // Some example property definitions
1490   // obj.DefineProperty("wordCacheSize", gfxTextRunWordCache::Count());
1491   // obj.DefineProperty("renderer", mRendererIDsString);
1492   // obj.DefineProperty("five", 5);
1493
1494   if (!obj.mOk) {
1495     return NS_ERROR_FAILURE;
1496   }
1497
1498   aResult.setObject(*obj.mObj);
1499   return NS_OK;
1500 }
1501
1502 nsAutoCString gBaseAppVersion;
1503
1504 const nsCString& GfxInfoBase::GetApplicationVersion() {
1505   static bool versionInitialized = false;
1506   if (!versionInitialized) {
1507     // If we fail to get the version, we will not try again.
1508     versionInitialized = true;
1509
1510     // Get the version from xpcom/system/nsIXULAppInfo.idl
1511     nsCOMPtr<nsIXULAppInfo> app = do_GetService("@mozilla.org/xre/app-info;1");
1512     if (app) {
1513       app->GetVersion(gBaseAppVersion);
1514     }
1515   }
1516   return gBaseAppVersion;
1517 }
1518
1519 void GfxInfoBase::AddCollector(GfxInfoCollectorBase* collector) {
1520   InitCollectors();
1521   sCollectors->AppendElement(collector);
1522 }
1523
1524 void GfxInfoBase::RemoveCollector(GfxInfoCollectorBase* collector) {
1525   InitCollectors();
1526   for (uint32_t i = 0; i < sCollectors->Length(); i++) {
1527     if ((*sCollectors)[i] == collector) {
1528       sCollectors->RemoveElementAt(i);
1529       break;
1530     }
1531   }
1532   if (sCollectors->IsEmpty()) {
1533     delete sCollectors;
1534     sCollectors = nullptr;
1535   }
1536 }
1537
1538 nsresult GfxInfoBase::FindMonitors(JSContext* aCx, JS::HandleObject aOutArray) {
1539   // If we have no platform specific implementation for detecting monitors, we
1540   // can just get the screen size from gfxPlatform as the best guess.
1541   if (!gfxPlatform::Initialized()) {
1542     return NS_OK;
1543   }
1544
1545   // If the screen size is empty, we are probably in xpcshell.
1546   gfx::IntSize screenSize = gfxPlatform::GetPlatform()->GetScreenSize();
1547
1548   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1549
1550   JS::Rooted<JS::Value> screenWidth(aCx, JS::Int32Value(screenSize.width));
1551   JS_SetProperty(aCx, obj, "screenWidth", screenWidth);
1552
1553   JS::Rooted<JS::Value> screenHeight(aCx, JS::Int32Value(screenSize.height));
1554   JS_SetProperty(aCx, obj, "screenHeight", screenHeight);
1555
1556   JS::Rooted<JS::Value> element(aCx, JS::ObjectValue(*obj));
1557   JS_SetElement(aCx, aOutArray, 0, element);
1558
1559   return NS_OK;
1560 }
1561
1562 NS_IMETHODIMP
1563 GfxInfoBase::GetMonitors(JSContext* aCx, JS::MutableHandleValue aResult) {
1564   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1565
1566   nsresult rv = FindMonitors(aCx, array);
1567   if (NS_FAILED(rv)) {
1568     return rv;
1569   }
1570
1571   aResult.setObject(*array);
1572   return NS_OK;
1573 }
1574
1575 NS_IMETHODIMP
1576 GfxInfoBase::RefreshMonitors() { return NS_ERROR_NOT_IMPLEMENTED; }
1577
1578 static inline bool SetJSPropertyString(JSContext* aCx,
1579                                        JS::Handle<JSObject*> aObj,
1580                                        const char* aProp, const char* aString) {
1581   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, aString));
1582   if (!str) {
1583     return false;
1584   }
1585
1586   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1587   return JS_SetProperty(aCx, aObj, aProp, val);
1588 }
1589
1590 template <typename T>
1591 static inline bool AppendJSElement(JSContext* aCx, JS::Handle<JSObject*> aObj,
1592                                    const T& aValue) {
1593   uint32_t index;
1594   if (!JS::GetArrayLength(aCx, aObj, &index)) {
1595     return false;
1596   }
1597   return JS_SetElement(aCx, aObj, index, aValue);
1598 }
1599
1600 nsresult GfxInfoBase::GetFeatures(JSContext* aCx,
1601                                   JS::MutableHandle<JS::Value> aOut) {
1602   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1603   if (!obj) {
1604     return NS_ERROR_OUT_OF_MEMORY;
1605   }
1606   aOut.setObject(*obj);
1607
1608   layers::LayersBackend backend =
1609       gfxPlatform::Initialized()
1610           ? gfxPlatform::GetPlatform()->GetCompositorBackend()
1611           : layers::LayersBackend::LAYERS_NONE;
1612   const char* backendName = layers::GetLayersBackendName(backend);
1613   SetJSPropertyString(aCx, obj, "compositor", backendName);
1614
1615   // If graphics isn't initialized yet, just stop now.
1616   if (!gfxPlatform::Initialized()) {
1617     return NS_OK;
1618   }
1619
1620   DescribeFeatures(aCx, obj);
1621   return NS_OK;
1622 }
1623
1624 nsresult GfxInfoBase::GetFeatureLog(JSContext* aCx,
1625                                     JS::MutableHandle<JS::Value> aOut) {
1626   JS::Rooted<JSObject*> containerObj(aCx, JS_NewPlainObject(aCx));
1627   if (!containerObj) {
1628     return NS_ERROR_OUT_OF_MEMORY;
1629   }
1630   aOut.setObject(*containerObj);
1631
1632   JS::Rooted<JSObject*> featureArray(aCx, JS::NewArrayObject(aCx, 0));
1633   if (!featureArray) {
1634     return NS_ERROR_OUT_OF_MEMORY;
1635   }
1636
1637   // Collect features.
1638   gfxConfig::ForEachFeature([&](const char* aName, const char* aDescription,
1639                                 FeatureState& aFeature) -> void {
1640     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1641     if (!obj) {
1642       return;
1643     }
1644     if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1645         !SetJSPropertyString(aCx, obj, "description", aDescription) ||
1646         !SetJSPropertyString(aCx, obj, "status",
1647                              FeatureStatusToString(aFeature.GetValue()))) {
1648       return;
1649     }
1650
1651     JS::Rooted<JS::Value> log(aCx);
1652     if (!BuildFeatureStateLog(aCx, aFeature, &log)) {
1653       return;
1654     }
1655     if (!JS_SetProperty(aCx, obj, "log", log)) {
1656       return;
1657     }
1658
1659     if (!AppendJSElement(aCx, featureArray, obj)) {
1660       return;
1661     }
1662   });
1663
1664   JS::Rooted<JSObject*> fallbackArray(aCx, JS::NewArrayObject(aCx, 0));
1665   if (!fallbackArray) {
1666     return NS_ERROR_OUT_OF_MEMORY;
1667   }
1668
1669   // Collect fallbacks.
1670   gfxConfig::ForEachFallback(
1671       [&](const char* aName, const char* aMessage) -> void {
1672         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1673         if (!obj) {
1674           return;
1675         }
1676
1677         if (!SetJSPropertyString(aCx, obj, "name", aName) ||
1678             !SetJSPropertyString(aCx, obj, "message", aMessage)) {
1679           return;
1680         }
1681
1682         if (!AppendJSElement(aCx, fallbackArray, obj)) {
1683           return;
1684         }
1685       });
1686
1687   JS::Rooted<JS::Value> val(aCx);
1688
1689   val = JS::ObjectValue(*featureArray);
1690   JS_SetProperty(aCx, containerObj, "features", val);
1691
1692   val = JS::ObjectValue(*fallbackArray);
1693   JS_SetProperty(aCx, containerObj, "fallbacks", val);
1694
1695   return NS_OK;
1696 }
1697
1698 bool GfxInfoBase::BuildFeatureStateLog(JSContext* aCx,
1699                                        const FeatureState& aFeature,
1700                                        JS::MutableHandle<JS::Value> aOut) {
1701   JS::Rooted<JSObject*> log(aCx, JS::NewArrayObject(aCx, 0));
1702   if (!log) {
1703     return false;
1704   }
1705   aOut.setObject(*log);
1706
1707   aFeature.ForEachStatusChange([&](const char* aType, FeatureStatus aStatus,
1708                                    const char* aMessage,
1709                                    const nsCString& aFailureId) -> void {
1710     JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1711     if (!obj) {
1712       return;
1713     }
1714
1715     if (!SetJSPropertyString(aCx, obj, "type", aType) ||
1716         !SetJSPropertyString(aCx, obj, "status",
1717                              FeatureStatusToString(aStatus)) ||
1718         (aMessage && !SetJSPropertyString(aCx, obj, "message", aMessage))) {
1719       return;
1720     }
1721
1722     if (!AppendJSElement(aCx, log, obj)) {
1723       return;
1724     }
1725   });
1726
1727   return true;
1728 }
1729
1730 void GfxInfoBase::DescribeFeatures(JSContext* aCx, JS::Handle<JSObject*> aObj) {
1731   JS::Rooted<JSObject*> obj(aCx);
1732
1733   gfx::FeatureState& hwCompositing =
1734       gfxConfig::GetFeature(gfx::Feature::HW_COMPOSITING);
1735   InitFeatureObject(aCx, aObj, "hwCompositing", hwCompositing, &obj);
1736
1737   gfx::FeatureState& gpuProcess =
1738       gfxConfig::GetFeature(gfx::Feature::GPU_PROCESS);
1739   InitFeatureObject(aCx, aObj, "gpuProcess", gpuProcess, &obj);
1740
1741   gfx::FeatureState& wrQualified =
1742       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_QUALIFIED);
1743   InitFeatureObject(aCx, aObj, "wrQualified", wrQualified, &obj);
1744
1745   gfx::FeatureState& webrender = gfxConfig::GetFeature(gfx::Feature::WEBRENDER);
1746   InitFeatureObject(aCx, aObj, "webrender", webrender, &obj);
1747
1748   gfx::FeatureState& wrCompositor =
1749       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_COMPOSITOR);
1750   InitFeatureObject(aCx, aObj, "wrCompositor", wrCompositor, &obj);
1751
1752   gfx::FeatureState& wrSoftware =
1753       gfxConfig::GetFeature(gfx::Feature::WEBRENDER_SOFTWARE);
1754   InitFeatureObject(aCx, aObj, "wrSoftware", wrSoftware, &obj);
1755
1756   gfx::FeatureState& openglCompositing =
1757       gfxConfig::GetFeature(gfx::Feature::OPENGL_COMPOSITING);
1758   InitFeatureObject(aCx, aObj, "openglCompositing", openglCompositing, &obj);
1759
1760   gfx::FeatureState& omtp = gfxConfig::GetFeature(gfx::Feature::OMTP);
1761   InitFeatureObject(aCx, aObj, "omtp", omtp, &obj);
1762 }
1763
1764 bool GfxInfoBase::InitFeatureObject(JSContext* aCx,
1765                                     JS::Handle<JSObject*> aContainer,
1766                                     const char* aName,
1767                                     mozilla::gfx::FeatureState& aFeatureState,
1768                                     JS::MutableHandle<JSObject*> aOutObj) {
1769   JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1770   if (!obj) {
1771     return false;
1772   }
1773
1774   nsCString status = aFeatureState.GetStatusAndFailureIdString();
1775
1776   JS::Rooted<JSString*> str(aCx, JS_NewStringCopyZ(aCx, status.get()));
1777   JS::Rooted<JS::Value> val(aCx, JS::StringValue(str));
1778   JS_SetProperty(aCx, obj, "status", val);
1779
1780   // Add the feature object to the container.
1781   {
1782     JS::Rooted<JS::Value> val(aCx, JS::ObjectValue(*obj));
1783     JS_SetProperty(aCx, aContainer, aName, val);
1784   }
1785
1786   aOutObj.set(obj);
1787   return true;
1788 }
1789
1790 nsresult GfxInfoBase::GetActiveCrashGuards(JSContext* aCx,
1791                                            JS::MutableHandle<JS::Value> aOut) {
1792   JS::Rooted<JSObject*> array(aCx, JS::NewArrayObject(aCx, 0));
1793   if (!array) {
1794     return NS_ERROR_OUT_OF_MEMORY;
1795   }
1796   aOut.setObject(*array);
1797
1798   DriverCrashGuard::ForEachActiveCrashGuard(
1799       [&](const char* aName, const char* aPrefName) -> void {
1800         JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
1801         if (!obj) {
1802           return;
1803         }
1804         if (!SetJSPropertyString(aCx, obj, "type", aName)) {
1805           return;
1806         }
1807         if (!SetJSPropertyString(aCx, obj, "prefName", aPrefName)) {
1808           return;
1809         }
1810         if (!AppendJSElement(aCx, array, obj)) {
1811           return;
1812         }
1813       });
1814
1815   return NS_OK;
1816 }
1817
1818 NS_IMETHODIMP
1819 GfxInfoBase::GetWebRenderEnabled(bool* aWebRenderEnabled) {
1820   *aWebRenderEnabled = gfxVars::UseWebRender();
1821   return NS_OK;
1822 }
1823
1824 NS_IMETHODIMP
1825 GfxInfoBase::GetTargetFrameRate(uint32_t* aTargetFrameRate) {
1826   *aTargetFrameRate = gfxPlatform::TargetFrameRate();
1827   return NS_OK;
1828 }
1829
1830 NS_IMETHODIMP
1831 GfxInfoBase::GetIsHeadless(bool* aIsHeadless) {
1832   *aIsHeadless = gfxPlatform::IsHeadless();
1833   return NS_OK;
1834 }
1835
1836 NS_IMETHODIMP
1837 GfxInfoBase::GetContentBackend(nsAString& aContentBackend) {
1838   BackendType backend = gfxPlatform::GetPlatform()->GetDefaultContentBackend();
1839   nsString outStr;
1840
1841   switch (backend) {
1842     case BackendType::DIRECT2D1_1: {
1843       outStr.AppendPrintf("Direct2D 1.1");
1844       break;
1845     }
1846     case BackendType::SKIA: {
1847       outStr.AppendPrintf("Skia");
1848       break;
1849     }
1850     case BackendType::CAIRO: {
1851       outStr.AppendPrintf("Cairo");
1852       break;
1853     }
1854     default:
1855       return NS_ERROR_FAILURE;
1856   }
1857
1858   aContentBackend.Assign(outStr);
1859   return NS_OK;
1860 }
1861
1862 NS_IMETHODIMP
1863 GfxInfoBase::GetAzureCanvasBackend(nsAString& aBackend) {
1864   CopyASCIItoUTF16(mozilla::MakeStringSpan(
1865                        gfxPlatform::GetPlatform()->GetAzureCanvasBackend()),
1866                    aBackend);
1867   return NS_OK;
1868 }
1869
1870 NS_IMETHODIMP
1871 GfxInfoBase::GetAzureContentBackend(nsAString& aBackend) {
1872   CopyASCIItoUTF16(mozilla::MakeStringSpan(
1873                        gfxPlatform::GetPlatform()->GetAzureContentBackend()),
1874                    aBackend);
1875   return NS_OK;
1876 }
1877
1878 NS_IMETHODIMP
1879 GfxInfoBase::GetUsingGPUProcess(bool* aOutValue) {
1880   GPUProcessManager* gpu = GPUProcessManager::Get();
1881   if (!gpu) {
1882     // Not supported in content processes.
1883     return NS_ERROR_FAILURE;
1884   }
1885
1886   *aOutValue = !!gpu->GetGPUChild();
1887   return NS_OK;
1888 }
1889
1890 NS_IMETHODIMP
1891 GfxInfoBase::ControlGPUProcessForXPCShell(bool aEnable, bool* _retval) {
1892   gfxPlatform::GetPlatform();
1893
1894   GPUProcessManager* gpm = GPUProcessManager::Get();
1895   if (aEnable) {
1896     if (!gfxConfig::IsEnabled(gfx::Feature::GPU_PROCESS)) {
1897       gfxConfig::UserForceEnable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1898     }
1899     gpm->LaunchGPUProcess();
1900     gpm->EnsureGPUReady();
1901   } else {
1902     gfxConfig::UserDisable(gfx::Feature::GPU_PROCESS, "xpcshell-test");
1903     gpm->KillProcess();
1904   }
1905
1906   *_retval = true;
1907   return NS_OK;
1908 }
1909
1910 NS_IMETHODIMP GfxInfoBase::KillGPUProcessForTests() {
1911   GPUProcessManager* gpm = GPUProcessManager::Get();
1912   if (!gpm) {
1913     // gfxPlatform has not been initialized.
1914     return NS_ERROR_NOT_INITIALIZED;
1915   }
1916
1917   gpm->KillProcess();
1918   return NS_OK;
1919 }
1920
1921 NS_IMETHODIMP GfxInfoBase::CrashGPUProcessForTests() {
1922   GPUProcessManager* gpm = GPUProcessManager::Get();
1923   if (!gpm) {
1924     // gfxPlatform has not been initialized.
1925     return NS_ERROR_NOT_INITIALIZED;
1926   }
1927
1928   gpm->CrashProcess();
1929   return NS_OK;
1930 }
1931
1932 GfxInfoCollectorBase::GfxInfoCollectorBase() {
1933   GfxInfoBase::AddCollector(this);
1934 }
1935
1936 GfxInfoCollectorBase::~GfxInfoCollectorBase() {
1937   GfxInfoBase::RemoveCollector(this);
1938 }