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Diffstat (limited to 'dom/media/ipc/RDDProcessManager.cpp')
| -rw-r--r-- | dom/media/ipc/RDDProcessManager.cpp | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/dom/media/ipc/RDDProcessManager.cpp b/dom/media/ipc/RDDProcessManager.cpp new file mode 100644 index 0000000000..e7da3c3569 --- /dev/null +++ b/dom/media/ipc/RDDProcessManager.cpp @@ -0,0 +1,413 @@ +/* -*- 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 "RDDProcessManager.h" + +#include "RDDChild.h" +#include "RDDProcessHost.h" +#include "mozilla/MemoryReportingProcess.h" +#include "mozilla/Preferences.h" +#include "mozilla/RemoteDecoderManagerChild.h" +#include "mozilla/RemoteDecoderManagerParent.h" +#include "mozilla/StaticPrefs_media.h" +#include "mozilla/SyncRunnable.h" // for LaunchRDDProcess +#include "mozilla/dom/ContentParent.h" +#include "mozilla/gfx/GPUProcessManager.h" +#include "mozilla/ipc/Endpoint.h" +#include "mozilla/ipc/ProcessChild.h" +#include "mozilla/layers/CompositorThread.h" +#include "mozilla/layers/VideoBridgeParent.h" +#include "nsAppRunner.h" +#include "nsContentUtils.h" + +namespace mozilla { + +using namespace gfx; +using namespace layers; + +static StaticAutoPtr<RDDProcessManager> sRDDSingleton; + +static bool sRDDProcessShutdown = false; + +bool RDDProcessManager::IsShutdown() const { + MOZ_ASSERT(NS_IsMainThread()); + return sRDDProcessShutdown || !sRDDSingleton; +} + +RDDProcessManager* RDDProcessManager::Get() { return sRDDSingleton; } + +void RDDProcessManager::Initialize() { + MOZ_ASSERT(XRE_IsParentProcess()); + sRDDSingleton = new RDDProcessManager(); +} + +void RDDProcessManager::Shutdown() { sRDDSingleton = nullptr; } + +void RDDProcessManager::RDDProcessShutdown() { + MOZ_ASSERT(NS_IsMainThread()); + sRDDProcessShutdown = true; + if (sRDDSingleton) { + sRDDSingleton->DestroyProcess(); + } +} + +RDDProcessManager::RDDProcessManager() + : mObserver(new Observer(this)), mTaskFactory(this) { + MOZ_COUNT_CTOR(RDDProcessManager); + // Start listening for pref changes so we can + // forward them to the process once it is running. + nsContentUtils::RegisterShutdownObserver(mObserver); + Preferences::AddStrongObserver(mObserver, ""); +} + +RDDProcessManager::~RDDProcessManager() { + MOZ_COUNT_DTOR(RDDProcessManager); + MOZ_ASSERT(NS_IsMainThread()); + + // The RDD process should have already been shut down. + MOZ_ASSERT(!mProcess && !mRDDChild); +} + +NS_IMPL_ISUPPORTS(RDDProcessManager::Observer, nsIObserver); + +RDDProcessManager::Observer::Observer(RDDProcessManager* aManager) + : mManager(aManager) {} + +NS_IMETHODIMP +RDDProcessManager::Observer::Observe(nsISupports* aSubject, const char* aTopic, + const char16_t* aData) { + if (!strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) { + mManager->OnXPCOMShutdown(); + } else if (!strcmp(aTopic, "nsPref:changed")) { + mManager->OnPreferenceChange(aData); + } + return NS_OK; +} + +void RDDProcessManager::OnXPCOMShutdown() { + MOZ_ASSERT(NS_IsMainThread()); + nsContentUtils::UnregisterShutdownObserver(mObserver); + Preferences::RemoveObserver(mObserver, ""); +} + +void RDDProcessManager::OnPreferenceChange(const char16_t* aData) { + MOZ_ASSERT(NS_IsMainThread()); + if (!mProcess) { + // Process hasn't been launched yet + return; + } + + // We know prefs are ASCII here. + NS_LossyConvertUTF16toASCII strData(aData); + + mozilla::dom::Pref pref(strData, /* isLocked */ false, + /* isSanitized */ false, Nothing(), Nothing()); + + Preferences::GetPreference(&pref, GeckoProcessType_RDD, + /* remoteType */ ""_ns); + if (!!mRDDChild) { + MOZ_ASSERT(mQueuedPrefs.IsEmpty()); + mRDDChild->SendPreferenceUpdate(pref); + } else if (IsRDDProcessLaunching()) { + mQueuedPrefs.AppendElement(pref); + } +} + +RefPtr<GenericNonExclusivePromise> RDDProcessManager::LaunchRDDProcess() { + MOZ_ASSERT(NS_IsMainThread()); + + if (IsShutdown()) { + return GenericNonExclusivePromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, + __func__); + } + + if (mNumProcessAttempts && !StaticPrefs::media_rdd_retryonfailure_enabled()) { + // We failed to start the RDD process earlier, abort now. + return GenericNonExclusivePromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, + __func__); + } + + if (mLaunchRDDPromise && mProcess) { + return mLaunchRDDPromise; + } + + std::vector<std::string> extraArgs; + ipc::ProcessChild::AddPlatformBuildID(extraArgs); + + // The subprocess is launched asynchronously, so we + // wait for the promise to be resolved to acquire the IPDL actor. + mProcess = new RDDProcessHost(this); + if (!mProcess->Launch(extraArgs)) { + mNumProcessAttempts++; + DestroyProcess(); + return GenericNonExclusivePromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, + __func__); + } + + mLaunchRDDPromise = mProcess->LaunchPromise()->Then( + GetMainThreadSerialEventTarget(), __func__, + [this](bool) { + if (IsShutdown()) { + return GenericNonExclusivePromise::CreateAndReject( + NS_ERROR_NOT_AVAILABLE, __func__); + } + + if (IsRDDProcessDestroyed()) { + return GenericNonExclusivePromise::CreateAndReject( + NS_ERROR_NOT_AVAILABLE, __func__); + } + + mRDDChild = mProcess->GetActor(); + mProcessToken = mProcess->GetProcessToken(); + + // Flush any pref updates that happened during + // launch and weren't included in the blobs set + // up in LaunchRDDProcess. + for (const mozilla::dom::Pref& pref : mQueuedPrefs) { + Unused << NS_WARN_IF(!mRDDChild->SendPreferenceUpdate(pref)); + } + mQueuedPrefs.Clear(); + + CrashReporter::AnnotateCrashReport( + CrashReporter::Annotation::RDDProcessStatus, "Running"_ns); + + if (!CreateVideoBridge()) { + mNumProcessAttempts++; + DestroyProcess(); + return GenericNonExclusivePromise::CreateAndReject( + NS_ERROR_NOT_AVAILABLE, __func__); + } + return GenericNonExclusivePromise::CreateAndResolve(true, __func__); + }, + [this](nsresult aError) { + if (Get()) { + mNumProcessAttempts++; + DestroyProcess(); + } + return GenericNonExclusivePromise::CreateAndReject(aError, __func__); + }); + return mLaunchRDDPromise; +} + +auto RDDProcessManager::EnsureRDDProcessAndCreateBridge( + base::ProcessId aOtherProcess, dom::ContentParentId aParentId) + -> RefPtr<EnsureRDDPromise> { + return InvokeAsync( + GetMainThreadSerialEventTarget(), __func__, + [aOtherProcess, aParentId, this]() -> RefPtr<EnsureRDDPromise> { + return LaunchRDDProcess()->Then( + GetMainThreadSerialEventTarget(), __func__, + [aOtherProcess, aParentId, this]() { + if (IsShutdown()) { + return EnsureRDDPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, + __func__); + } + ipc::Endpoint<PRemoteDecoderManagerChild> endpoint; + if (!CreateContentBridge(aOtherProcess, aParentId, &endpoint)) { + return EnsureRDDPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, + __func__); + } + mNumProcessAttempts = 0; + return EnsureRDDPromise::CreateAndResolve(std::move(endpoint), + __func__); + }, + [](nsresult aError) { + return EnsureRDDPromise::CreateAndReject(aError, __func__); + }); + }); +} + +bool RDDProcessManager::IsRDDProcessLaunching() { + MOZ_ASSERT(NS_IsMainThread()); + return !!mProcess && !mRDDChild; +} + +bool RDDProcessManager::IsRDDProcessDestroyed() const { + MOZ_ASSERT(NS_IsMainThread()); + return !mRDDChild && !mProcess; +} + +void RDDProcessManager::OnProcessUnexpectedShutdown(RDDProcessHost* aHost) { + MOZ_ASSERT(NS_IsMainThread()); + MOZ_ASSERT(mProcess && mProcess == aHost); + + mNumUnexpectedCrashes++; + + DestroyProcess(); +} + +void RDDProcessManager::NotifyRemoteActorDestroyed( + const uint64_t& aProcessToken) { + if (!NS_IsMainThread()) { + RefPtr<Runnable> task = mTaskFactory.NewRunnableMethod( + &RDDProcessManager::NotifyRemoteActorDestroyed, aProcessToken); + NS_DispatchToMainThread(task.forget()); + return; + } + + if (mProcessToken != aProcessToken) { + // This token is for an older process; we can safely ignore it. + return; + } + + // One of the bridged top-level actors for the RDD process has been + // prematurely terminated, and we're receiving a notification. This + // can happen if the ActorDestroy for a bridged protocol fires + // before the ActorDestroy for PRDDChild. + OnProcessUnexpectedShutdown(mProcess); +} + +void RDDProcessManager::DestroyProcess() { + MOZ_ASSERT(NS_IsMainThread()); + if (!mProcess) { + return; + } + + mProcess->Shutdown(); + mProcessToken = 0; + mProcess = nullptr; + mRDDChild = nullptr; + mQueuedPrefs.Clear(); + + CrashReporter::AnnotateCrashReport( + CrashReporter::Annotation::RDDProcessStatus, "Destroyed"_ns); +} + +bool RDDProcessManager::CreateContentBridge( + base::ProcessId aOtherProcess, dom::ContentParentId aParentId, + ipc::Endpoint<PRemoteDecoderManagerChild>* aOutRemoteDecoderManager) { + MOZ_ASSERT(NS_IsMainThread()); + + if (IsRDDProcessDestroyed()) { + MOZ_LOG(sPDMLog, LogLevel::Debug, + ("RDD shutdown before creating content bridge")); + return false; + } + + ipc::Endpoint<PRemoteDecoderManagerParent> parentPipe; + ipc::Endpoint<PRemoteDecoderManagerChild> childPipe; + + nsresult rv = PRemoteDecoderManager::CreateEndpoints( + mRDDChild->OtherPid(), aOtherProcess, &parentPipe, &childPipe); + if (NS_FAILED(rv)) { + MOZ_LOG(sPDMLog, LogLevel::Debug, + ("Could not create content remote decoder: %d", int(rv))); + return false; + } + + mRDDChild->SendNewContentRemoteDecoderManager(std::move(parentPipe), + aParentId); + + *aOutRemoteDecoderManager = std::move(childPipe); + return true; +} + +bool RDDProcessManager::CreateVideoBridge() { + MOZ_ASSERT(NS_IsMainThread()); + ipc::Endpoint<PVideoBridgeParent> parentPipe; + ipc::Endpoint<PVideoBridgeChild> childPipe; + + GPUProcessManager* gpuManager = GPUProcessManager::Get(); + base::ProcessId gpuProcessPid = + gpuManager ? gpuManager->GPUProcessPid() : base::kInvalidProcessId; + + // Build content device data first; this ensure that the GPU process is fully + // ready. + ContentDeviceData contentDeviceData; + gfxPlatform::GetPlatform()->BuildContentDeviceData(&contentDeviceData); + + // The child end is the producer of video frames; the parent end is the + // consumer. + base::ProcessId childPid = RDDProcessPid(); + base::ProcessId parentPid = gpuProcessPid != base::kInvalidProcessId + ? gpuProcessPid + : base::GetCurrentProcId(); + + nsresult rv = PVideoBridge::CreateEndpoints(parentPid, childPid, &parentPipe, + &childPipe); + if (NS_FAILED(rv)) { + MOZ_LOG(sPDMLog, LogLevel::Debug, + ("Could not create video bridge: %d", int(rv))); + return false; + } + + mRDDChild->SendInitVideoBridge(std::move(childPipe), + mNumUnexpectedCrashes == 0, contentDeviceData); + if (gpuProcessPid != base::kInvalidProcessId) { + gpuManager->InitVideoBridge(std::move(parentPipe), + VideoBridgeSource::RddProcess); + } else { + VideoBridgeParent::Open(std::move(parentPipe), + VideoBridgeSource::RddProcess); + } + + return true; +} + +base::ProcessId RDDProcessManager::RDDProcessPid() { + MOZ_ASSERT(NS_IsMainThread()); + base::ProcessId rddPid = + mRDDChild ? mRDDChild->OtherPid() : base::kInvalidProcessId; + return rddPid; +} + +class RDDMemoryReporter : public MemoryReportingProcess { + public: + NS_INLINE_DECL_THREADSAFE_REFCOUNTING(RDDMemoryReporter, override) + + bool IsAlive() const override { return !!GetChild(); } + + bool SendRequestMemoryReport( + const uint32_t& aGeneration, const bool& aAnonymize, + const bool& aMinimizeMemoryUsage, + const Maybe<ipc::FileDescriptor>& aDMDFile) override { + RDDChild* child = GetChild(); + if (!child) { + return false; + } + + return child->SendRequestMemoryReport(aGeneration, aAnonymize, + aMinimizeMemoryUsage, aDMDFile); + } + + int32_t Pid() const override { + if (RDDChild* child = GetChild()) { + return (int32_t)child->OtherPid(); + } + return 0; + } + + private: + RDDChild* GetChild() const { + if (RDDProcessManager* rddpm = RDDProcessManager::Get()) { + if (RDDChild* child = rddpm->GetRDDChild()) { + return child; + } + } + return nullptr; + } + + protected: + ~RDDMemoryReporter() = default; +}; + +RefPtr<MemoryReportingProcess> RDDProcessManager::GetProcessMemoryReporter() { + if (!mProcess || !mProcess->IsConnected()) { + return nullptr; + } + return new RDDMemoryReporter(); +} + +RefPtr<PRDDChild::TestTriggerMetricsPromise> +RDDProcessManager::TestTriggerMetrics() { + if (!NS_WARN_IF(!mRDDChild)) { + return mRDDChild->SendTestTriggerMetrics(); + } + + return PRDDChild::TestTriggerMetricsPromise::CreateAndReject( + ipc::ResponseRejectReason::SendError, __func__); +} + +} // namespace mozilla |