1 files changed, 329 insertions, 0 deletions
diff --git a/gfx/ipc/GPUChild.cpp b/gfx/ipc/GPUChild.cpp
new file mode 100644
index 0000000000..909d0aad81
--- /dev/null
+++ b/gfx/ipc/GPUChild.cpp
@@ -0,0 +1,329 @@
+/* -*- 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/. */
+#include "GPUChild.h"
+
+#include "GPUProcessHost.h"
+#include "GPUProcessManager.h"
+#include "GfxInfoBase.h"
+#include "VRProcessManager.h"
+#include "gfxConfig.h"
+#include "gfxPlatform.h"
+#include "mozilla/Services.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/TelemetryIPC.h"
+#include "mozilla/dom/CheckerboardReportService.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/MemoryReportRequest.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/gfx/gfxVars.h"
+#if defined(XP_WIN)
+#  include "mozilla/gfx/DeviceManagerDx.h"
+#endif
+#include "mozilla/HangDetails.h"
+#include "mozilla/RemoteDecoderManagerChild.h"  // For RemoteDecodeIn
+#include "mozilla/Unused.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/layers/APZInputBridgeChild.h"
+#include "mozilla/layers/LayerTreeOwnerTracker.h"
+#include "nsIGfxInfo.h"
+#include "nsIObserverService.h"
+
+#ifdef MOZ_GECKO_PROFILER
+#  include "ProfilerParent.h"
+#endif
+
+namespace mozilla {
+namespace gfx {
+
+using namespace layers;
+
+GPUChild::GPUChild(GPUProcessHost* aHost) : mHost(aHost), mGPUReady(false) {
+  MOZ_COUNT_CTOR(GPUChild);
+}
+
+GPUChild::~GPUChild() { MOZ_COUNT_DTOR(GPUChild); }
+
+void GPUChild::Init() {
+  nsTArray<GfxVarUpdate> updates = gfxVars::FetchNonDefaultVars();
+
+  DevicePrefs devicePrefs;
+  devicePrefs.hwCompositing() = gfxConfig::GetValue(Feature::HW_COMPOSITING);
+  devicePrefs.d3d11Compositing() =
+      gfxConfig::GetValue(Feature::D3D11_COMPOSITING);
+  devicePrefs.oglCompositing() =
+      gfxConfig::GetValue(Feature::OPENGL_COMPOSITING);
+  devicePrefs.advancedLayers() = gfxConfig::GetValue(Feature::ADVANCED_LAYERS);
+  devicePrefs.useD2D1() = gfxConfig::GetValue(Feature::DIRECT2D);
+  devicePrefs.webGPU() = gfxConfig::GetValue(Feature::WEBGPU);
+  devicePrefs.d3d11HwAngle() = gfxConfig::GetValue(Feature::D3D11_HW_ANGLE);
+
+  nsTArray<LayerTreeIdMapping> mappings;
+  LayerTreeOwnerTracker::Get()->Iterate(
+      [&](LayersId aLayersId, base::ProcessId aProcessId) {
+        mappings.AppendElement(LayerTreeIdMapping(aLayersId, aProcessId));
+      });
+
+  nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
+  nsTArray<GfxInfoFeatureStatus> features;
+  if (gfxInfo) {
+    auto* gfxInfoRaw = static_cast<widget::GfxInfoBase*>(gfxInfo.get());
+    features = gfxInfoRaw->GetAllFeatures();
+  }
+
+  SendInit(updates, devicePrefs, mappings, features);
+
+  gfxVars::AddReceiver(this);
+
+#ifdef MOZ_GECKO_PROFILER
+  Unused << SendInitProfiler(ProfilerParent::CreateForProcess(OtherPid()));
+#endif
+}
+
+void GPUChild::OnVarChanged(const GfxVarUpdate& aVar) { SendUpdateVar(aVar); }
+
+bool GPUChild::EnsureGPUReady() {
+  if (mGPUReady) {
+    return true;
+  }
+
+  GPUDeviceData data;
+  if (!SendGetDeviceStatus(&data)) {
+    return false;
+  }
+
+  gfxPlatform::GetPlatform()->ImportGPUDeviceData(data);
+  Telemetry::AccumulateTimeDelta(Telemetry::GPU_PROCESS_LAUNCH_TIME_MS_2,
+                                 mHost->GetLaunchTime());
+  mGPUReady = true;
+  return true;
+}
+
+base::ProcessHandle GPUChild::GetChildProcessHandle() {
+  return mHost->GetChildProcessHandle();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvInitComplete(const GPUDeviceData& aData) {
+  // We synchronously requested GPU parameters before this arrived.
+  if (mGPUReady) {
+    return IPC_OK();
+  }
+
+  gfxPlatform::GetPlatform()->ImportGPUDeviceData(aData);
+  Telemetry::AccumulateTimeDelta(Telemetry::GPU_PROCESS_LAUNCH_TIME_MS_2,
+                                 mHost->GetLaunchTime());
+  mGPUReady = true;
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvReportCheckerboard(
+    const uint32_t& aSeverity, const nsCString& aLog) {
+  layers::CheckerboardEventStorage::Report(aSeverity, std::string(aLog.get()));
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvGraphicsError(const nsCString& aError) {
+  gfx::LogForwarder* lf = gfx::Factory::GetLogForwarder();
+  if (lf) {
+    std::stringstream message;
+    message << "GP+" << aError.get();
+    lf->UpdateStringsVector(message.str());
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvCreateVRProcess() {
+  // Make sure create VR process at the main process
+  MOZ_ASSERT(XRE_IsParentProcess());
+  if (StaticPrefs::dom_vr_process_enabled_AtStartup()) {
+    VRProcessManager::Initialize();
+    VRProcessManager* vr = VRProcessManager::Get();
+    MOZ_ASSERT(vr, "VRProcessManager must be initialized first.");
+
+    if (vr) {
+      vr->LaunchVRProcess();
+    }
+  }
+
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvShutdownVRProcess() {
+  // Make sure stopping VR process at the main process
+  MOZ_ASSERT(XRE_IsParentProcess());
+  if (StaticPrefs::dom_vr_process_enabled_AtStartup()) {
+    VRProcessManager::Shutdown();
+  }
+
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvNotifyUiObservers(
+    const nsCString& aTopic) {
+  nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
+  MOZ_ASSERT(obsSvc);
+  if (obsSvc) {
+    obsSvc->NotifyObservers(nullptr, aTopic.get(), nullptr);
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvAccumulateChildHistograms(
+    nsTArray<HistogramAccumulation>&& aAccumulations) {
+  TelemetryIPC::AccumulateChildHistograms(Telemetry::ProcessID::Gpu,
+                                          aAccumulations);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvAccumulateChildKeyedHistograms(
+    nsTArray<KeyedHistogramAccumulation>&& aAccumulations) {
+  TelemetryIPC::AccumulateChildKeyedHistograms(Telemetry::ProcessID::Gpu,
+                                               aAccumulations);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvUpdateChildScalars(
+    nsTArray<ScalarAction>&& aScalarActions) {
+  TelemetryIPC::UpdateChildScalars(Telemetry::ProcessID::Gpu, aScalarActions);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvUpdateChildKeyedScalars(
+    nsTArray<KeyedScalarAction>&& aScalarActions) {
+  TelemetryIPC::UpdateChildKeyedScalars(Telemetry::ProcessID::Gpu,
+                                        aScalarActions);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvRecordChildEvents(
+    nsTArray<mozilla::Telemetry::ChildEventData>&& aEvents) {
+  TelemetryIPC::RecordChildEvents(Telemetry::ProcessID::Gpu, aEvents);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvRecordDiscardedData(
+    const mozilla::Telemetry::DiscardedData& aDiscardedData) {
+  TelemetryIPC::RecordDiscardedData(Telemetry::ProcessID::Gpu, aDiscardedData);
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvNotifyDeviceReset(
+    const GPUDeviceData& aData) {
+  gfxPlatform::GetPlatform()->ImportGPUDeviceData(aData);
+  mHost->mListener->OnRemoteProcessDeviceReset(mHost);
+  return IPC_OK();
+}
+
+bool GPUChild::SendRequestMemoryReport(const uint32_t& aGeneration,
+                                       const bool& aAnonymize,
+                                       const bool& aMinimizeMemoryUsage,
+                                       const Maybe<FileDescriptor>& aDMDFile) {
+  mMemoryReportRequest = MakeUnique<MemoryReportRequestHost>(aGeneration);
+
+  PGPUChild::SendRequestMemoryReport(
+      aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile,
+      [&](const uint32_t& aGeneration2) {
+        if (GPUProcessManager* gpm = GPUProcessManager::Get()) {
+          if (GPUChild* child = gpm->GetGPUChild()) {
+            if (child->mMemoryReportRequest) {
+              child->mMemoryReportRequest->Finish(aGeneration2);
+              child->mMemoryReportRequest = nullptr;
+            }
+          }
+        }
+      },
+      [&](mozilla::ipc::ResponseRejectReason) {
+        if (GPUProcessManager* gpm = GPUProcessManager::Get()) {
+          if (GPUChild* child = gpm->GetGPUChild()) {
+            child->mMemoryReportRequest = nullptr;
+          }
+        }
+      });
+
+  return true;
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvAddMemoryReport(
+    const MemoryReport& aReport) {
+  if (mMemoryReportRequest) {
+    mMemoryReportRequest->RecvReport(aReport);
+  }
+  return IPC_OK();
+}
+
+void GPUChild::ActorDestroy(ActorDestroyReason aWhy) {
+  if (aWhy == AbnormalShutdown) {
+    GenerateCrashReport(OtherPid());
+
+    Telemetry::Accumulate(
+        Telemetry::SUBPROCESS_ABNORMAL_ABORT,
+        nsDependentCString(XRE_GeckoProcessTypeToString(GeckoProcessType_GPU)),
+        1);
+
+    // Notify the Telemetry environment so that we can refresh and do a
+    // subsession split
+    if (nsCOMPtr<nsIObserverService> obsvc = services::GetObserverService()) {
+      obsvc->NotifyObservers(nullptr, "compositor:process-aborted", nullptr);
+    }
+  }
+
+  gfxVars::RemoveReceiver(this);
+  mHost->OnChannelClosed();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvUpdateFeature(
+    const Feature& aFeature, const FeatureFailure& aChange) {
+  gfxConfig::SetFailed(aFeature, aChange.status(), aChange.message().get(),
+                       aChange.failureId());
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvUsedFallback(const Fallback& aFallback,
+                                                   const nsCString& aMessage) {
+  gfxConfig::EnableFallback(aFallback, aMessage.get());
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvBHRThreadHang(
+    const HangDetails& aDetails) {
+  nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
+  if (obs) {
+    // Copy the HangDetails recieved over the network into a nsIHangDetails, and
+    // then fire our own observer notification.
+    // XXX: We should be able to avoid this potentially expensive copy here by
+    // moving our deserialized argument.
+    nsCOMPtr<nsIHangDetails> hangDetails =
+        new nsHangDetails(HangDetails(aDetails), PersistedToDisk::No);
+    obs->NotifyObservers(hangDetails, "bhr-thread-hang", nullptr);
+  }
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult GPUChild::RecvUpdateMediaCodecsSupported(
+    const PDMFactory::MediaCodecsSupported& aSupported) {
+  dom::ContentParent::BroadcastMediaCodecsSupportedUpdate(
+      RemoteDecodeIn::GpuProcess, aSupported);
+  return IPC_OK();
+}
+
+class DeferredDeleteGPUChild : public Runnable {
+ public:
+  explicit DeferredDeleteGPUChild(UniquePtr<GPUChild>&& aChild)
+      : Runnable("gfx::DeferredDeleteGPUChild"), mChild(std::move(aChild)) {}
+
+  NS_IMETHODIMP Run() override { return NS_OK; }
+
+ private:
+  UniquePtr<GPUChild> mChild;
+};
+
+/* static */
+void GPUChild::Destroy(UniquePtr<GPUChild>&& aChild) {
+  NS_DispatchToMainThread(new DeferredDeleteGPUChild(std::move(aChild)));
+}
+
+}  // namespace gfx
+}  // namespace mozilla