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/* -*- 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
#include "RDDParent.h"
#if defined(XP_WIN)
# include <dwrite.h>
# include <process.h>
# include "WMF.h"
# include "WMFDecoderModule.h"
# include "mozilla/WinDllServices.h"
# include "mozilla/gfx/DeviceManagerDx.h"
#else
# include <unistd.h>
#endif
#include "PDMFactory.h"
#include "gfxConfig.h"
#include "mozilla/Assertions.h"
#include "mozilla/FOGIPC.h"
#include "mozilla/Preferences.h"
#include "mozilla/RemoteDecoderManagerParent.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/MemoryReportRequest.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/glean/GleanMetrics.h"
#include "mozilla/ipc/CrashReporterClient.h"
#include "mozilla/ipc/ProcessChild.h"
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
# include "mozilla/Sandbox.h"
#endif
#include "ChildProfilerController.h"
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
# include "RDDProcessHost.h"
# include "mozilla/Sandbox.h"
# include "nsMacUtilsImpl.h"
#endif
#include "mozilla/ipc/ProcessUtils.h"
#include "nsDebugImpl.h"
#include "nsIObserverService.h"
#include "nsIXULRuntime.h"
#include "nsThreadManager.h"
#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
# include "mozilla/SandboxTestingChild.h"
#endif
namespace mozilla {
using namespace ipc;
using namespace gfx;
static RDDParent* sRDDParent;
RDDParent::RDDParent() : mLaunchTime(TimeStamp::Now()) { sRDDParent = this; }
RDDParent::~RDDParent() { sRDDParent = nullptr; }
/* static */
RDDParent* RDDParent::GetSingleton() {
MOZ_DIAGNOSTIC_ASSERT(sRDDParent);
return sRDDParent;
}
bool RDDParent::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("RDD");
// 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();
}
// Init crash reporter support.
CrashReporterClient::InitSingleton(this);
if (NS_FAILED(NS_InitMinimalXPCOM())) {
return false;
}
gfxConfig::Init();
gfxVars::Initialize();
#ifdef XP_WIN
DeviceManagerDx::Init();
auto rv = wmf::MediaFoundationInitializer::HasInitialized();
if (!rv) {
NS_WARNING("Failed to init Media Foundation in the RDD process");
}
#endif
mozilla::ipc::SetThisProcessName("RDD Process");
return true;
}
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
extern "C" {
void CGSShutdownServerConnections();
};
#endif
mozilla::ipc::IPCResult RDDParent::RecvInit(
nsTArray<GfxVarUpdate>&& vars, const Maybe<FileDescriptor>& aBrokerFd,
const bool& aCanRecordReleaseTelemetry,
const bool& aIsReadyForBackgroundProcessing) {
for (const auto& var : vars) {
gfxVars::ApplyUpdate(var);
}
auto supported = PDMFactory::Supported();
Unused << SendUpdateMediaCodecsSupported(supported);
#if defined(MOZ_SANDBOX)
# if defined(XP_MACOSX)
// Close all current connections to the WindowServer. This ensures that the
// Activity Monitor will not label the content process as "Not responding"
CGSShutdownServerConnections();
# elif defined(XP_LINUX)
int fd = -1;
if (aBrokerFd.isSome()) {
fd = aBrokerFd.value().ClonePlatformHandle().release();
}
SetRemoteDataDecoderSandbox(fd);
# endif // XP_MACOSX/XP_LINUX
#endif // MOZ_SANDBOX
#if defined(XP_WIN)
if (aCanRecordReleaseTelemetry) {
RefPtr<DllServices> dllSvc(DllServices::Get());
dllSvc->StartUntrustedModulesProcessor(aIsReadyForBackgroundProcessing);
}
#endif // defined(XP_WIN)
return IPC_OK();
}
IPCResult RDDParent::RecvUpdateVar(const GfxVarUpdate& aUpdate) {
#if defined(XP_WIN)
auto scopeExit = MakeScopeExit(
[couldUseHWDecoder = gfx::gfxVars::CanUseHardwareVideoDecoding()] {
if (couldUseHWDecoder != gfx::gfxVars::CanUseHardwareVideoDecoding()) {
// The capabilities of the system may have changed, force a refresh by
// re-initializing the WMF PDM.
WMFDecoderModule::Init();
Unused << RDDParent::GetSingleton()->SendUpdateMediaCodecsSupported(
PDMFactory::Supported(true /* force refresh */));
}
});
#endif
gfxVars::ApplyUpdate(aUpdate);
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvInitProfiler(
Endpoint<PProfilerChild>&& aEndpoint) {
mProfilerController = ChildProfilerController::Create(std::move(aEndpoint));
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvNewContentRemoteDecoderManager(
Endpoint<PRemoteDecoderManagerParent>&& aEndpoint,
const ContentParentId& aParentId) {
if (!RemoteDecoderManagerParent::CreateForContent(std::move(aEndpoint),
aParentId)) {
return IPC_FAIL_NO_REASON(this);
}
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvInitVideoBridge(
Endpoint<PVideoBridgeChild>&& aEndpoint, const bool& aCreateHardwareDevice,
const ContentDeviceData& aContentDeviceData) {
if (!RemoteDecoderManagerParent::CreateVideoBridgeToOtherProcess(
std::move(aEndpoint))) {
return IPC_FAIL_NO_REASON(this);
}
gfxConfig::Inherit(
{
Feature::HW_COMPOSITING,
Feature::D3D11_COMPOSITING,
Feature::OPENGL_COMPOSITING,
Feature::DIRECT2D,
},
aContentDeviceData.prefs());
#ifdef XP_WIN
if (gfxConfig::IsEnabled(Feature::D3D11_COMPOSITING)) {
auto* devmgr = DeviceManagerDx::Get();
if (devmgr) {
devmgr->ImportDeviceInfo(aContentDeviceData.d3d11());
if (aCreateHardwareDevice) {
devmgr->CreateContentDevices();
}
}
}
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvRequestMemoryReport(
const uint32_t& aGeneration, const bool& aAnonymize,
const bool& aMinimizeMemoryUsage, const Maybe<FileDescriptor>& aDMDFile,
const RequestMemoryReportResolver& aResolver) {
nsPrintfCString processName("RDD (pid %u)", (unsigned)getpid());
mozilla::dom::MemoryReportRequestClient::Start(
aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile, processName,
[&](const MemoryReport& aReport) {
Unused << GetSingleton()->SendAddMemoryReport(aReport);
},
aResolver);
return IPC_OK();
}
#if defined(XP_WIN)
mozilla::ipc::IPCResult RDDParent::RecvGetUntrustedModulesData(
GetUntrustedModulesDataResolver&& aResolver) {
RefPtr<DllServices> dllSvc(DllServices::Get());
dllSvc->GetUntrustedModulesData()->Then(
GetMainThreadSerialEventTarget(), __func__,
[aResolver](Maybe<UntrustedModulesData>&& aData) {
aResolver(std::move(aData));
},
[aResolver](nsresult aReason) { aResolver(Nothing()); });
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvUnblockUntrustedModulesThread() {
if (nsCOMPtr<nsIObserverService> obs =
mozilla::services::GetObserverService()) {
obs->NotifyObservers(nullptr, "unblock-untrusted-modules-thread", nullptr);
}
return IPC_OK();
}
#endif // defined(XP_WIN)
mozilla::ipc::IPCResult RDDParent::RecvPreferenceUpdate(const Pref& aPref) {
Preferences::SetPreference(aPref);
return IPC_OK();
}
#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
mozilla::ipc::IPCResult RDDParent::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 RDDParent::RecvFlushFOGData(
FlushFOGDataResolver&& aResolver) {
glean::FlushFOGData(std::move(aResolver));
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvTestTriggerMetrics(
TestTriggerMetricsResolver&& aResolve) {
mozilla::glean::test_only_ipc::a_counter.Add(nsIXULRuntime::PROCESS_TYPE_RDD);
aResolve(true);
return IPC_OK();
}
mozilla::ipc::IPCResult RDDParent::RecvTestTelemetryProbes() {
const uint32_t kExpectedUintValue = 42;
Telemetry::ScalarSet(Telemetry::ScalarID::TELEMETRY_TEST_RDD_ONLY_UINT,
kExpectedUintValue);
return IPC_OK();
}
void RDDParent::ActorDestroy(ActorDestroyReason aWhy) {
if (AbnormalShutdown == aWhy) {
NS_WARNING("Shutting down RDD process early due to a crash!");
Telemetry::Accumulate(Telemetry::SUBPROCESS_ABNORMAL_ABORT, "rdd"_ns, 1);
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__, [&]() {
#if defined(XP_WIN)
RefPtr<DllServices> dllSvc(DllServices::Get());
dllSvc->DisableFull();
#endif // defined(XP_WIN)
if (mProfilerController) {
mProfilerController->Shutdown();
mProfilerController = nullptr;
}
RemoteDecoderManagerParent::ShutdownVideoBridge();
#ifdef XP_WIN
DeviceManagerDx::Shutdown();
#endif
gfxVars::Shutdown();
gfxConfig::Shutdown();
CrashReporterClient::DestroySingleton();
XRE_ShutdownChildProcess();
});
}
} // namespace mozilla