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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
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#include "UntrustedModulesBackupService.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/HashFunctions.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/StaticLocalPtr.h"
namespace mozilla {
ProcessHashKey::ProcessHashKey(GeckoProcessType aType, DWORD aPid)
: mType(aType), mPid(aPid) {}
bool ProcessHashKey::operator==(const ProcessHashKey& aOther) const {
return mPid == aOther.mPid && mType == aOther.mType;
}
PLDHashNumber ProcessHashKey::Hash() const { return HashGeneric(mPid, mType); }
void UntrustedModulesBackupData::Add(UntrustedModulesData&& aData) {
auto p = LookupForAdd(ProcessHashKey(aData.mProcessType, aData.mPid));
if (p) {
p.Data()->mData.Merge(std::move(aData));
} else {
auto data = MakeRefPtr<UntrustedModulesDataContainer>(std::move(aData));
p.OrInsert([data = std::move(data)]() { return data; });
}
}
/* static */
UntrustedModulesBackupService* UntrustedModulesBackupService::Get() {
if (!XRE_IsParentProcess()) {
return nullptr;
}
static StaticLocalRefPtr<UntrustedModulesBackupService> sInstance(
[]() -> already_AddRefed<UntrustedModulesBackupService> {
RefPtr<UntrustedModulesBackupService> instance(
new UntrustedModulesBackupService());
auto setClearOnShutdown = [ptr = &sInstance]() -> void {
ClearOnShutdown(ptr);
};
if (NS_IsMainThread()) {
setClearOnShutdown();
return instance.forget();
}
SchedulerGroup::Dispatch(
TaskCategory::Other,
NS_NewRunnableFunction(
"mozilla::UntrustedModulesBackupService::Get",
std::move(setClearOnShutdown)));
return instance.forget();
}());
return sInstance;
}
void UntrustedModulesBackupService::Backup(BackupType aType,
UntrustedModulesData&& aData) {
mBackup[static_cast<uint32_t>(aType)].Add(std::move(aData));
}
void UntrustedModulesBackupService::SettleAllStagingData() {
UntrustedModulesBackupData staging;
staging.SwapElements(mBackup[static_cast<uint32_t>(BackupType::Staging)]);
for (auto&& iter = staging.Iter(); !iter.Done(); iter.Next()) {
if (!iter.Data()) {
continue;
}
mBackup[static_cast<uint32_t>(BackupType::Settled)].Add(
std::move(iter.Data()->mData));
}
}
const UntrustedModulesBackupData& UntrustedModulesBackupService::Ref(
BackupType aType) const {
return mBackup[static_cast<uint32_t>(aType)];
}
} // namespace mozilla
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