summaryrefslogtreecommitdiffstats
path: root/gfx/ipc/GPUParent.cpp
blob: 3d33be3a75ff15ef648842f3d8f512dac205a59f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifdef XP_WIN
#  include "WMF.h"
#  include "WMFDecoderModule.h"
#endif
#include "GLContextProvider.h"
#include "GPUParent.h"
#include "GPUProcessHost.h"
#include "GPUProcessManager.h"
#include "gfxGradientCache.h"
#include "GfxInfoBase.h"
#include "VRGPUChild.h"
#include "VRManager.h"
#include "VRManagerParent.h"
#include "VsyncBridgeParent.h"
#include "cairo.h"
#include "gfxConfig.h"
#include "gfxCrashReporterUtils.h"
#include "gfxPlatform.h"
#include "mozilla/Assertions.h"
#include "mozilla/Components.h"
#include "mozilla/FOGIPC.h"
#include "mozilla/HangDetails.h"
#include "mozilla/PerfStats.h"
#include "mozilla/Preferences.h"
#include "mozilla/ProcessPriorityManager.h"
#include "mozilla/RemoteDecoderManagerChild.h"
#include "mozilla/RemoteDecoderManagerParent.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/StaticPrefs_dom.h"
#include "mozilla/StaticPrefs_media.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/MemoryReportRequest.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/CanvasRenderThread.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/glean/GleanMetrics.h"
#include "mozilla/image/ImageMemoryReporter.h"
#include "mozilla/ipc/CrashReporterClient.h"
#include "mozilla/ipc/ProcessChild.h"
#include "mozilla/ipc/ProcessUtils.h"
#include "mozilla/layers/APZInputBridgeParent.h"
#include "mozilla/layers/APZPublicUtils.h"  // for apz::InitializeGlobalState
#include "mozilla/layers/APZThreadUtils.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/CompositorManagerParent.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/layers/ImageBridgeParent.h"
#include "mozilla/layers/LayerTreeOwnerTracker.h"
#include "mozilla/layers/RemoteTextureMap.h"
#include "mozilla/layers/UiCompositorControllerParent.h"
#include "mozilla/layers/VideoBridgeParent.h"
#include "mozilla/webrender/RenderThread.h"
#include "mozilla/webrender/WebRenderAPI.h"
#include "nsDebugImpl.h"
#include "nsIGfxInfo.h"
#include "nsIXULRuntime.h"
#include "nsThreadManager.h"
#include "nscore.h"
#include "prenv.h"
#include "skia/include/core/SkGraphics.h"
#if defined(XP_WIN)
#  include <dwrite.h>
#  include <process.h>
#  include <windows.h>

#  include "gfxDWriteFonts.h"
#  include "gfxWindowsPlatform.h"
#  include "mozilla/WindowsVersion.h"
#  include "mozilla/gfx/DeviceManagerDx.h"
#  include "mozilla/layers/GpuProcessD3D11TextureMap.h"
#  include "mozilla/layers/GpuProcessD3D11QueryMap.h"
#  include "mozilla/layers/TextureD3D11.h"
#  include "mozilla/widget/WinCompositorWindowThread.h"
#  include "MediaCodecsSupport.h"
#  include "WMFDecoderModule.h"
#else
#  include <unistd.h>
#endif
#ifdef MOZ_WIDGET_GTK
#  include <gtk/gtk.h>

#  include "skia/include/ports/SkTypeface_cairo.h"
#endif
#ifdef ANDROID
#  include "mozilla/layers/AndroidHardwareBuffer.h"
#  include "skia/include/ports/SkTypeface_cairo.h"
#endif
#include "ChildProfilerController.h"
#include "nsAppRunner.h"

#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
#  include "mozilla/SandboxTestingChild.h"
#endif

namespace mozilla::gfx {

using namespace ipc;
using namespace layers;

static media::MediaCodecsSupported GetFullMediaCodecSupport(
    bool aForceRefresh = false) {
#if defined(XP_WIN)
  // Re-initializing WMFPDM if forcing a refresh is required or hardware
  // decoding is supported in order to get HEVC result properly. We will disable
  // it later if the pref is OFF.
  if (aForceRefresh || (gfx::gfxVars::IsInitialized() &&
                        gfx::gfxVars::CanUseHardwareVideoDecoding())) {
    WMFDecoderModule::Init(WMFDecoderModule::Config::ForceEnableHEVC);
  }
  auto disableHEVCIfNeeded = MakeScopeExit([]() {
    if (StaticPrefs::media_wmf_hevc_enabled() != 1) {
      WMFDecoderModule::DisableForceEnableHEVC();
    }
  });
#endif
  return PDMFactory::Supported(aForceRefresh);
}

static GPUParent* sGPUParent;

GPUParent::GPUParent() : mLaunchTime(TimeStamp::Now()) { sGPUParent = this; }

GPUParent::~GPUParent() { sGPUParent = nullptr; }

/* static */
GPUParent* GPUParent::GetSingleton() {
  MOZ_DIAGNOSTIC_ASSERT(sGPUParent);
  return sGPUParent;
}

/* static */ bool GPUParent::MaybeFlushMemory() {
#if defined(XP_WIN) && !defined(HAVE_64BIT_BUILD)
  MOZ_ASSERT(CompositorThreadHolder::IsInCompositorThread());
  if (!XRE_IsGPUProcess()) {
    return false;
  }

  MEMORYSTATUSEX stat;
  stat.dwLength = sizeof(stat);
  if (!GlobalMemoryStatusEx(&stat)) {
    return false;
  }

  // We only care about virtual process memory space in the GPU process because
  // the UI process is already watching total memory usage.
  static const size_t kLowVirtualMemoryThreshold = 384 * 1024 * 1024;
  bool lowMemory = stat.ullAvailVirtual < kLowVirtualMemoryThreshold;

  // We suppress more than one low memory notification until we exit the
  // condition. The UI process goes through more effort, reporting on-going
  // memory pressure, but rather than try to manage a shared state, we just
  // send one notification here to try to resolve it.
  static bool sLowMemory = false;
  if (lowMemory && !sLowMemory) {
    NS_DispatchToMainThread(
        NS_NewRunnableFunction("gfx::GPUParent::FlushMemory", []() -> void {
          Unused << GPUParent::GetSingleton()->SendFlushMemory(
              u"low-memory"_ns);
        }));
  }
  sLowMemory = lowMemory;
  return lowMemory;
#else
  return false;
#endif
}

bool GPUParent::Init(mozilla::ipc::UntypedEndpoint&& aEndpoint,
                     const char* aParentBuildID) {
  // Initialize the thread manager before starting IPC. Otherwise, messages
  // may be posted to the main thread and we won't be able to process them.
  if (NS_WARN_IF(NS_FAILED(nsThreadManager::get().Init()))) {
    return false;
  }

  // Now it's safe to start IPC.
  if (NS_WARN_IF(!aEndpoint.Bind(this))) {
    return false;
  }

  nsDebugImpl::SetMultiprocessMode("GPU");

  // This must be checked before any IPDL message, which may hit sentinel
  // errors due to parent and content processes having different
  // versions.
  MessageChannel* channel = GetIPCChannel();
  if (channel && !channel->SendBuildIDsMatchMessage(aParentBuildID)) {
    // We need to quit this process if the buildID doesn't match the parent's.
    // This can occur when an update occurred in the background.
    ProcessChild::QuickExit();
  }

  if (NS_FAILED(NS_InitMinimalXPCOM())) {
    return false;
  }

  // Ensure the observer service exists.
  ProcessPriorityManager::Init();

  // Init crash reporter support.
  CrashReporterClient::InitSingleton(this);

  gfxConfig::Init();
  gfxVars::Initialize();
  gfxPlatform::InitNullMetadata();
  // Ensure our Factory is initialised, mainly for gfx logging to work.
  gfxPlatform::InitMoz2DLogging();
#if defined(XP_WIN)
  gfxWindowsPlatform::InitMemoryReportersForGPUProcess();
  DeviceManagerDx::Init();
  GpuProcessD3D11TextureMap::Init();
  GpuProcessD3D11QueryMap::Init();
  auto rv = wmf::MediaFoundationInitializer::HasInitialized();
  if (!rv) {
    NS_WARNING("Failed to init Media Foundation in the GPU process");
  }
#endif

  CompositorThreadHolder::Start();
  RemoteTextureMap::Init();
  APZThreadUtils::SetControllerThread(NS_GetCurrentThread());
  apz::InitializeGlobalState();
  LayerTreeOwnerTracker::Initialize();
  CompositorBridgeParent::InitializeStatics();
  mozilla::ipc::SetThisProcessName("GPU Process");

  return true;
}

void GPUParent::NotifyDeviceReset() {
  if (!NS_IsMainThread()) {
    NS_DispatchToMainThread(NS_NewRunnableFunction(
        "gfx::GPUParent::NotifyDeviceReset",
        []() -> void { GPUParent::GetSingleton()->NotifyDeviceReset(); }));
    return;
  }

  // Reset and reinitialize the compositor devices
#ifdef XP_WIN
  if (!DeviceManagerDx::Get()->MaybeResetAndReacquireDevices()) {
    // If the device doesn't need to be reset then the device
    // has already been reset by a previous NotifyDeviceReset message.
    return;
  }
#endif

  // Notify the main process that there's been a device reset
  // and that they should reset their compositors and repaint
  GPUDeviceData data;
  RecvGetDeviceStatus(&data);
  Unused << SendNotifyDeviceReset(data);
}

void GPUParent::NotifyOverlayInfo(layers::OverlayInfo aInfo) {
  if (!NS_IsMainThread()) {
    NS_DispatchToMainThread(NS_NewRunnableFunction(
        "gfx::GPUParent::NotifyOverlayInfo", [aInfo]() -> void {
          GPUParent::GetSingleton()->NotifyOverlayInfo(aInfo);
        }));
    return;
  }
  Unused << SendNotifyOverlayInfo(aInfo);
}

void GPUParent::NotifySwapChainInfo(layers::SwapChainInfo aInfo) {
  if (!NS_IsMainThread()) {
    NS_DispatchToMainThread(NS_NewRunnableFunction(
        "gfx::GPUParent::NotifySwapChainInfo", [aInfo]() -> void {
          GPUParent::GetSingleton()->NotifySwapChainInfo(aInfo);
        }));
    return;
  }
  Unused << SendNotifySwapChainInfo(aInfo);
}

void GPUParent::NotifyDisableRemoteCanvas() {
  if (!NS_IsMainThread()) {
    NS_DispatchToMainThread(NS_NewRunnableFunction(
        "gfx::GPUParent::NotifyDisableRemoteCanvas", []() -> void {
          GPUParent::GetSingleton()->NotifyDisableRemoteCanvas();
        }));
    return;
  }
  Unused << SendNotifyDisableRemoteCanvas();
}

mozilla::ipc::IPCResult GPUParent::RecvInit(
    nsTArray<GfxVarUpdate>&& vars, const DevicePrefs& devicePrefs,
    nsTArray<LayerTreeIdMapping>&& aMappings,
    nsTArray<GfxInfoFeatureStatus>&& aFeatures, uint32_t aWrNamespace) {
  for (const auto& var : vars) {
    gfxVars::ApplyUpdate(var);
  }

  // Inherit device preferences.
  gfxConfig::Inherit(Feature::HW_COMPOSITING, devicePrefs.hwCompositing());
  gfxConfig::Inherit(Feature::D3D11_COMPOSITING,
                     devicePrefs.d3d11Compositing());
  gfxConfig::Inherit(Feature::OPENGL_COMPOSITING, devicePrefs.oglCompositing());
  gfxConfig::Inherit(Feature::DIRECT2D, devicePrefs.useD2D1());
  gfxConfig::Inherit(Feature::D3D11_HW_ANGLE, devicePrefs.d3d11HwAngle());

  {  // Let the crash reporter know if we've got WR enabled or not. For other
    // processes this happens in gfxPlatform::InitWebRenderConfig.
    ScopedGfxFeatureReporter reporter("WR",
                                      gfxPlatform::WebRenderPrefEnabled());
    reporter.SetSuccessful();
  }

  for (const LayerTreeIdMapping& map : aMappings) {
    LayerTreeOwnerTracker::Get()->Map(map.layersId(), map.ownerId());
  }

  widget::GfxInfoBase::SetFeatureStatus(std::move(aFeatures));

  // We bypass gfxPlatform::Init, so we must initialize any relevant libraries
  // here that would normally be initialized there.
  SkGraphics::Init();

  bool useRemoteCanvas =
      gfxVars::RemoteCanvasEnabled() || gfxVars::UseAcceleratedCanvas2D();
  if (useRemoteCanvas) {
    gfxGradientCache::Init();
  }

#if defined(XP_WIN)
  if (gfxConfig::IsEnabled(Feature::D3D11_COMPOSITING)) {
    if (DeviceManagerDx::Get()->CreateCompositorDevices() && useRemoteCanvas) {
      if (DeviceManagerDx::Get()->CreateCanvasDevice()) {
        gfxDWriteFont::InitDWriteSupport();
      } else {
        gfxWarning() << "Failed to create canvas device.";
      }
    }
  }
  DeviceManagerDx::Get()->CreateDirectCompositionDevice();
  // Ensure to initialize GfxInfo
  nsCOMPtr<nsIGfxInfo> gfxInfo = components::GfxInfo::Service();
  Unused << gfxInfo;

  Factory::EnsureDWriteFactory();
#endif

#if defined(MOZ_WIDGET_GTK)
  char* display_name = PR_GetEnv("MOZ_GDK_DISPLAY");
  if (!display_name) {
    bool waylandEnabled = false;
#  ifdef MOZ_WAYLAND
    waylandEnabled = IsWaylandEnabled();
#  endif
    if (!waylandEnabled) {
      display_name = PR_GetEnv("DISPLAY");
    }
  }
  if (display_name) {
    int argc = 3;
    char option_name[] = "--display";
    char* argv[] = {// argv0 is unused because g_set_prgname() was called in
                    // XRE_InitChildProcess().
                    nullptr, option_name, display_name, nullptr};
    char** argvp = argv;
    gtk_init(&argc, &argvp);
  } else {
    gtk_init(nullptr, nullptr);
  }

  // Ensure we have an FT library for font instantiation.
  // This would normally be set by gfxPlatform::Init().
  // Since we bypass that, we must do it here instead.
  FT_Library library = Factory::NewFTLibrary();
  MOZ_ASSERT(library);
  Factory::SetFTLibrary(library);

  // true to match gfxPlatform::FontHintingEnabled(). We must hardcode
  // this value because we do not have a gfxPlatform instance.
  SkInitCairoFT(true);

  // Ensure that GfxInfo::Init is called on the main thread.
  nsCOMPtr<nsIGfxInfo> gfxInfo = components::GfxInfo::Service();
  Unused << gfxInfo;
#endif

#ifdef ANDROID
  // Ensure we have an FT library for font instantiation.
  // This would normally be set by gfxPlatform::Init().
  // Since we bypass that, we must do it here instead.
  FT_Library library = Factory::NewFTLibrary();
  MOZ_ASSERT(library);
  Factory::SetFTLibrary(library);

  // false to match gfxAndroidPlatform::FontHintingEnabled(). We must
  // hardcode this value because we do not have a gfxPlatform instance.
  SkInitCairoFT(false);

  if (gfxVars::UseAHardwareBufferSharedSurfaceWebglOop()) {
    layers::AndroidHardwareBufferApi::Init();
    layers::AndroidHardwareBufferManager::Init();
  }

#endif

  // Make sure to do this *after* we update gfxVars above.
  wr::RenderThread::Start(aWrNamespace);
  gfx::CanvasRenderThread::Start();
  image::ImageMemoryReporter::InitForWebRender();

  VRManager::ManagerInit();
  // Send a message to the UI process that we're done.
  GPUDeviceData data;
  RecvGetDeviceStatus(&data);
  Unused << SendInitComplete(data);

  // Dispatch a task to background thread to determine the media codec supported
  // result, and propagate it back to the chrome process on the main thread.
  MOZ_ALWAYS_SUCCEEDS(NS_DispatchBackgroundTask(
      NS_NewRunnableFunction(
          "GPUParent::Supported",
          []() {
            NS_DispatchToMainThread(NS_NewRunnableFunction(
                "GPUParent::UpdateMediaCodecsSupported",
                [supported = GetFullMediaCodecSupport()]() {
                  Unused << GPUParent::GetSingleton()
                                ->SendUpdateMediaCodecsSupported(supported);
                }));
          }),
      nsIEventTarget::DISPATCH_NORMAL));

  Telemetry::AccumulateTimeDelta(Telemetry::GPU_PROCESS_INITIALIZATION_TIME_MS,
                                 mLaunchTime);
  return IPC_OK();
}

#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
mozilla::ipc::IPCResult GPUParent::RecvInitSandboxTesting(
    Endpoint<PSandboxTestingChild>&& aEndpoint) {
  if (!SandboxTestingChild::Initialize(std::move(aEndpoint))) {
    return IPC_FAIL(
        this, "InitSandboxTesting failed to initialise the child process.");
  }
  return IPC_OK();
}
#endif

mozilla::ipc::IPCResult GPUParent::RecvInitCompositorManager(
    Endpoint<PCompositorManagerParent>&& aEndpoint, uint32_t aNamespace) {
  CompositorManagerParent::Create(std::move(aEndpoint), ContentParentId(),
                                  aNamespace, /* aIsRoot */ true);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitVsyncBridge(
    Endpoint<PVsyncBridgeParent>&& aVsyncEndpoint) {
  mVsyncBridge = VsyncBridgeParent::Start(std::move(aVsyncEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitImageBridge(
    Endpoint<PImageBridgeParent>&& aEndpoint) {
  ImageBridgeParent::CreateForGPUProcess(std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitVideoBridge(
    Endpoint<PVideoBridgeParent>&& aEndpoint,
    const layers::VideoBridgeSource& aSource) {
  // For GPU decoding, the video bridge would be opened in
  // `VideoBridgeChild::StartupForGPUProcess`.
  MOZ_ASSERT(aSource == layers::VideoBridgeSource::RddProcess ||
             aSource == layers::VideoBridgeSource::MFMediaEngineCDMProcess);
  VideoBridgeParent::Open(std::move(aEndpoint), aSource);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitVRManager(
    Endpoint<PVRManagerParent>&& aEndpoint) {
  VRManagerParent::CreateForGPUProcess(std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitVR(
    Endpoint<PVRGPUChild>&& aEndpoint) {
  gfx::VRGPUChild::InitForGPUProcess(std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitUiCompositorController(
    const LayersId& aRootLayerTreeId,
    Endpoint<PUiCompositorControllerParent>&& aEndpoint) {
  UiCompositorControllerParent::Start(aRootLayerTreeId, std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitAPZInputBridge(
    const LayersId& aRootLayerTreeId,
    Endpoint<PAPZInputBridgeParent>&& aEndpoint) {
  APZInputBridgeParent::Create(aRootLayerTreeId, std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvInitProfiler(
    Endpoint<PProfilerChild>&& aEndpoint) {
  mProfilerController = ChildProfilerController::Create(std::move(aEndpoint));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvUpdateVar(const GfxVarUpdate& aUpdate) {
#if defined(XP_WIN)
  auto scopeExit = MakeScopeExit(
      [couldUseHWDecoder = gfx::gfxVars::CanUseHardwareVideoDecoding()] {
        if (couldUseHWDecoder != gfx::gfxVars::CanUseHardwareVideoDecoding()) {
          MOZ_ALWAYS_SUCCEEDS(NS_DispatchBackgroundTask(
              NS_NewRunnableFunction(
                  "GPUParent::RecvUpdateVar",
                  []() {
                    NS_DispatchToMainThread(NS_NewRunnableFunction(
                        "GPUParent::UpdateMediaCodecsSupported",
                        [supported = GetFullMediaCodecSupport(
                             true /* force refresh */)]() {
                          Unused << GPUParent::GetSingleton()
                                        ->SendUpdateMediaCodecsSupported(
                                            supported);
                        }));
                  }),
              nsIEventTarget::DISPATCH_NORMAL));
        }
      });
#endif
  gfxVars::ApplyUpdate(aUpdate);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvPreferenceUpdate(const Pref& aPref) {
  Preferences::SetPreference(aPref);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvScreenInformationChanged() {
#if defined(XP_WIN)
  DeviceManagerDx::Get()->PostUpdateMonitorInfo();
#endif
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNotifyBatteryInfo(
    const BatteryInformation& aBatteryInfo) {
  wr::RenderThread::Get()->SetBatteryInfo(aBatteryInfo);
  return IPC_OK();
}

static void CopyFeatureChange(Feature aFeature, Maybe<FeatureFailure>* aOut) {
  FeatureState& feature = gfxConfig::GetFeature(aFeature);
  if (feature.DisabledByDefault() || feature.IsEnabled()) {
    // No change:
    //   - Disabled-by-default means the parent process told us not to use this
    //   feature.
    //   - Enabled means we were told to use this feature, and we didn't
    //   discover anything
    //     that would prevent us from doing so.
    *aOut = Nothing();
    return;
  }

  MOZ_ASSERT(!feature.IsEnabled());

  nsCString message;
  message.AssignASCII(feature.GetFailureMessage());

  *aOut =
      Some(FeatureFailure(feature.GetValue(), message, feature.GetFailureId()));
}

mozilla::ipc::IPCResult GPUParent::RecvGetDeviceStatus(GPUDeviceData* aOut) {
  CopyFeatureChange(Feature::D3D11_COMPOSITING, &aOut->d3d11Compositing());
  CopyFeatureChange(Feature::OPENGL_COMPOSITING, &aOut->oglCompositing());

#if defined(XP_WIN)
  if (DeviceManagerDx* dm = DeviceManagerDx::Get()) {
    D3D11DeviceStatus deviceStatus;
    dm->ExportDeviceInfo(&deviceStatus);
    aOut->gpuDevice() = Some(deviceStatus);
  }
#else
  aOut->gpuDevice() = Nothing();
#endif

  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvSimulateDeviceReset() {
#if defined(XP_WIN)
  DeviceManagerDx::Get()->ForceDeviceReset(
      ForcedDeviceResetReason::COMPOSITOR_UPDATED);
#endif
  wr::RenderThread::Get()->SimulateDeviceReset();
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNewContentCompositorManager(
    Endpoint<PCompositorManagerParent>&& aEndpoint,
    const ContentParentId& aChildId, uint32_t aNamespace) {
  CompositorManagerParent::Create(std::move(aEndpoint), aChildId, aNamespace,
                                  /* aIsRoot */ false);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNewContentImageBridge(
    Endpoint<PImageBridgeParent>&& aEndpoint, const ContentParentId& aChildId) {
  if (!ImageBridgeParent::CreateForContent(std::move(aEndpoint), aChildId)) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNewContentVRManager(
    Endpoint<PVRManagerParent>&& aEndpoint, const ContentParentId& aChildId) {
  if (!VRManagerParent::CreateForContent(std::move(aEndpoint), aChildId)) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNewContentRemoteDecoderManager(
    Endpoint<PRemoteDecoderManagerParent>&& aEndpoint,
    const ContentParentId& aChildId) {
  if (!RemoteDecoderManagerParent::CreateForContent(std::move(aEndpoint),
                                                    aChildId)) {
    return IPC_FAIL_NO_REASON(this);
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvAddLayerTreeIdMapping(
    const LayerTreeIdMapping& aMapping) {
  LayerTreeOwnerTracker::Get()->Map(aMapping.layersId(), aMapping.ownerId());
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvRemoveLayerTreeIdMapping(
    const LayerTreeIdMapping& aMapping) {
  LayerTreeOwnerTracker::Get()->Unmap(aMapping.layersId(), aMapping.ownerId());
  CompositorBridgeParent::DeallocateLayerTreeId(aMapping.layersId());
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvNotifyGpuObservers(
    const nsCString& aTopic) {
  nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
  MOZ_ASSERT(obsSvc);
  if (obsSvc) {
    obsSvc->NotifyObservers(nullptr, aTopic.get(), nullptr);
  }
  return IPC_OK();
}

/* static */
void GPUParent::GetGPUProcessName(nsACString& aStr) {
  auto processType = XRE_GetProcessType();
  unsigned pid = 0;
  if (processType == GeckoProcessType_GPU) {
    pid = getpid();
  } else {
    MOZ_DIAGNOSTIC_ASSERT(processType == GeckoProcessType_Default);
    pid = GPUProcessManager::Get()->GPUProcessPid();
  }

  nsPrintfCString processName("GPU (pid %u)", pid);
  aStr.Assign(processName);
}

mozilla::ipc::IPCResult GPUParent::RecvRequestMemoryReport(
    const uint32_t& aGeneration, const bool& aAnonymize,
    const bool& aMinimizeMemoryUsage, const Maybe<FileDescriptor>& aDMDFile,
    const RequestMemoryReportResolver& aResolver) {
  nsAutoCString processName;
  GetGPUProcessName(processName);

  mozilla::dom::MemoryReportRequestClient::Start(
      aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile, processName,
      [&](const MemoryReport& aReport) {
        Unused << GetSingleton()->SendAddMemoryReport(aReport);
      },
      aResolver);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvShutdownVR() {
  if (StaticPrefs::dom_vr_process_enabled_AtStartup()) {
    VRGPUChild::Shutdown();
  }
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvUpdatePerfStatsCollectionMask(
    const uint64_t& aMask) {
  PerfStats::SetCollectionMask(static_cast<PerfStats::MetricMask>(aMask));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvCollectPerfStatsJSON(
    CollectPerfStatsJSONResolver&& aResolver) {
  aResolver(PerfStats::CollectLocalPerfStatsJSON());
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvFlushFOGData(
    FlushFOGDataResolver&& aResolver) {
  glean::FlushFOGData(std::move(aResolver));
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvTestTriggerMetrics(
    TestTriggerMetricsResolver&& aResolve) {
  mozilla::glean::test_only_ipc::a_counter.Add(nsIXULRuntime::PROCESS_TYPE_GPU);
  aResolve(true);
  return IPC_OK();
}

mozilla::ipc::IPCResult GPUParent::RecvCrashProcess() {
  MOZ_CRASH("Deliberate GPU process crash");
  return IPC_OK();
}

void GPUParent::ActorDestroy(ActorDestroyReason aWhy) {
  if (AbnormalShutdown == aWhy) {
    NS_WARNING("Shutting down GPU process early due to a crash!");
    ProcessChild::QuickExit();
  }

  // Send the last bits of Glean data over to the main process.
  glean::FlushFOGData(
      [](ByteBuf&& aBuf) { glean::SendFOGData(std::move(aBuf)); });

#ifndef NS_FREE_PERMANENT_DATA
  // No point in going through XPCOM shutdown because we don't keep persistent
  // state.
  ProcessChild::QuickExit();
#endif

  // Wait until all RemoteDecoderManagerParent have closed.
  mShutdownBlockers.WaitUntilClear(10 * 1000 /* 10s timeout*/)
      ->Then(GetCurrentSerialEventTarget(), __func__, [self = RefPtr{this}]() {
        if (self->mProfilerController) {
          self->mProfilerController->Shutdown();
          self->mProfilerController = nullptr;
        }

        if (self->mVsyncBridge) {
          self->mVsyncBridge->Shutdown();
          self->mVsyncBridge = nullptr;
        }
        VideoBridgeParent::Shutdown();
        // This could be running on either the Compositor thread, the Renderer
        // thread, or the dedicated CanvasRender thread, so we need to shutdown
        // before the former two.
        CanvasRenderThread::Shutdown();
        CompositorThreadHolder::Shutdown();
        RemoteTextureMap::Shutdown();
        // There is a case that RenderThread exists when gfxVars::UseWebRender()
        // is false. This could happen when WebRender was fallbacked to
        // compositor.
        if (wr::RenderThread::Get()) {
          wr::RenderThread::ShutDown();
        }
#ifdef XP_WIN
        if (widget::WinCompositorWindowThread::Get()) {
          widget::WinCompositorWindowThread::ShutDown();
        }
#endif

        image::ImageMemoryReporter::ShutdownForWebRender();

        // Shut down the default GL context provider.
        gl::GLContextProvider::Shutdown();

#if defined(XP_WIN)
        // The above shutdown calls operate on the available context providers
        // on most platforms.  Windows is a "special snowflake", though, and has
        // three context providers available, so we have to shut all of them
        // down. We should only support the default GL provider on Windows;
        // then, this could go away. Unfortunately, we currently support WGL
        // (the default) for WebGL on Optimus.
        gl::GLContextProviderEGL::Shutdown();
#endif

        Factory::ShutDown();

    // We bypass gfxPlatform shutdown, so we must shutdown any libraries here
    // that would normally be handled by it.
#ifdef NS_FREE_PERMANENT_DATA
        SkGraphics::PurgeFontCache();
        cairo_debug_reset_static_data();
#endif

#if defined(XP_WIN)
        GpuProcessD3D11QueryMap::Shutdown();
        GpuProcessD3D11TextureMap::Shutdown();
        DeviceManagerDx::Shutdown();
#endif
        LayerTreeOwnerTracker::Shutdown();
        gfxVars::Shutdown();
        gfxConfig::Shutdown();
        CrashReporterClient::DestroySingleton();
        XRE_ShutdownChildProcess();
      });
}

}  // namespace mozilla::gfx