95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#include "UntrustedModulesBackupService.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/HashFunctions.h"
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#include "mozilla/SchedulerGroup.h"
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#include "mozilla/StaticLocalPtr.h"
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namespace mozilla {
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ProcessHashKey::ProcessHashKey(GeckoProcessType aType, DWORD aPid)
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: mType(aType), mPid(aPid) {}
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bool ProcessHashKey::operator==(const ProcessHashKey& aOther) const {
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return mPid == aOther.mPid && mType == aOther.mType;
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}
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PLDHashNumber ProcessHashKey::Hash() const { return HashGeneric(mPid, mType); }
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void UntrustedModulesBackupData::Add(UntrustedModulesData&& aData) {
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WithEntryHandle(
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ProcessHashKey(aData.mProcessType, aData.mPid), [&](auto&& p) {
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if (p) {
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p.Data()->mData.Merge(std::move(aData));
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} else {
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p.Insert(MakeRefPtr<UntrustedModulesDataContainer>(std::move(aData)));
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}
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});
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}
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void UntrustedModulesBackupData::AddWithoutStacks(
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UntrustedModulesData&& aData) {
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WithEntryHandle(
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ProcessHashKey(aData.mProcessType, aData.mPid), [&](auto&& p) {
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if (p) {
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p.Data()->mData.MergeWithoutStacks(std::move(aData));
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} else {
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aData.Truncate(true);
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p.Insert(MakeRefPtr<UntrustedModulesDataContainer>(std::move(aData)));
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}
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});
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}
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/* static */
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UntrustedModulesBackupService* UntrustedModulesBackupService::Get() {
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if (!XRE_IsParentProcess()) {
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return nullptr;
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}
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static StaticLocalRefPtr<UntrustedModulesBackupService> sInstance(
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[]() -> already_AddRefed<UntrustedModulesBackupService> {
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RefPtr<UntrustedModulesBackupService> instance(
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new UntrustedModulesBackupService());
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auto setClearOnShutdown = [ptr = &sInstance]() -> void {
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ClearOnShutdown(ptr);
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};
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if (NS_IsMainThread()) {
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setClearOnShutdown();
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return instance.forget();
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}
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SchedulerGroup::Dispatch(NS_NewRunnableFunction(
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"mozilla::UntrustedModulesBackupService::Get",
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std::move(setClearOnShutdown)));
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return instance.forget();
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}());
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return sInstance;
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}
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void UntrustedModulesBackupService::Backup(UntrustedModulesData&& aData) {
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mStaging.Add(std::move(aData));
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}
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void UntrustedModulesBackupService::SettleAllStagingData() {
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UntrustedModulesBackupData staging;
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staging.SwapElements(mStaging);
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for (auto&& iter = staging.Iter(); !iter.Done(); iter.Next()) {
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if (!iter.Data()) {
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continue;
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}
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mSettled.AddWithoutStacks(std::move(iter.Data()->mData));
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}
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}
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} // namespace mozilla
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