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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,
#include "DirtyTrackingAutoLock.h"
#include "Assertions.h"
#include "GroupInfo.h"
#include "GroupInfoPair.h"
#include "OriginInfo.h"
#include "QuotaManager.h"
namespace mozilla::dom::quota {
DirtyTrackingAutoLock::DirtyTrackingAutoLock(Mutex& aLock,
RefPtr<OriginInfo> aOriginInfo)
: mLock(&aLock), mOriginInfo(std::move(aOriginInfo)), mTouched(false) {
if (IsValid()) {
Lock();
if (!mOriginInfo->LockedDirty()) {
EagerMarkAsDirty();
}
}
}
DirtyTrackingAutoLock::DirtyTrackingAutoLock(
Mutex& aLock,
const nsClassHashtable<nsCStringHashKey, GroupInfoPair>& aGroupInfoPairs,
const OriginMetadata& aOriginMetadata)
: mLock(&aLock), mOriginInfo(nullptr), mTouched(false) {
Lock();
mOriginInfo = GetOriginInfo(aGroupInfoPairs, aOriginMetadata);
if (!IsValid()) {
Unlock<true>();
return;
}
if (!mOriginInfo->LockedDirty()) {
EagerMarkAsDirty();
}
}
void DirtyTrackingAutoLock::EagerMarkAsDirty() {
MOZ_ASSERT(IsValid());
auto stateMetadata = mOriginInfo->LockedFlattenToOriginStateMetadata();
stateMetadata.mDirty = true;
// The lock was acquired to set the dirty flag and timestamp above.
// Release it for the disk write that persists the flag, then re-acquire
// in RAII manner so the caller can proceed with the actual metadata
// modifications.
PauseLock pausedLock(*this);
auto* quotaManager = QuotaManager::Get();
MOZ_ASSERT(quotaManager);
quotaManager->AssertNotCurrentThreadOwnsQuotaMutex();
quotaManager->FlagOriginInfoAsDirtyOnDisk(*this, stateMetadata);
}
RefPtr<OriginInfo> DirtyTrackingAutoLock::GetOriginInfo(
const nsClassHashtable<nsCStringHashKey, GroupInfoPair>& aGroupInfoPairs,
const OriginMetadata& aOriginMetadata) {
GroupInfoPair* pair;
if (!aGroupInfoPairs.Get(aOriginMetadata.mGroup, &pair)) {
return nullptr;
}
MOZ_DIAGNOSTIC_ASSERT(pair);
RefPtr<GroupInfo> groupInfo =
pair->LockedGetGroupInfo(aOriginMetadata.mPersistenceType);
return groupInfo ? groupInfo->LockedGetOriginInfo(aOriginMetadata.mOrigin)
: nullptr;
}
} // namespace mozilla::dom::quota