gecko-dev/dom/indexedDB/DatabaseInfo.cpp

271 строка
5.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "DatabaseInfo.h"
#include "nsDataHashtable.h"
#include "nsThreadUtils.h"
USING_INDEXEDDB_NAMESPACE
namespace {
typedef nsDataHashtable<nsISupportsHashKey, DatabaseInfo*>
DatabaseHash;
DatabaseHash* gDatabaseHash = nullptr;
PLDHashOperator
EnumerateObjectStoreNames(const nsAString& aKey,
ObjectStoreInfo* aData,
void* aUserArg)
{
nsTArray<nsString>* array = static_cast<nsTArray<nsString>*>(aUserArg);
if (!array->InsertElementSorted(aData->name)) {
NS_ERROR("Out of memory?");
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
PLDHashOperator
CloneObjectStoreInfo(const nsAString& aKey,
ObjectStoreInfo* aData,
void* aUserArg)
{
ObjectStoreInfoHash* hash = static_cast<ObjectStoreInfoHash*>(aUserArg);
nsRefPtr<ObjectStoreInfo> newInfo(new ObjectStoreInfo(*aData));
hash->Put(aKey, newInfo);
return PL_DHASH_NEXT;
}
}
DatabaseInfo::~DatabaseInfo()
{
// Clones are never in the hash.
if (!cloned) {
DatabaseInfo::Remove(id);
}
}
ObjectStoreInfo::ObjectStoreInfo(ObjectStoreInfo& aOther)
: nextAutoIncrementId(aOther.nextAutoIncrementId),
comittedAutoIncrementId(aOther.comittedAutoIncrementId)
{
*static_cast<ObjectStoreInfoGuts*>(this) =
static_cast<ObjectStoreInfoGuts&>(aOther);
// Doesn't copy the refcount
MOZ_COUNT_CTOR(ObjectStoreInfo);
}
#ifdef NS_BUILD_REFCNT_LOGGING
IndexInfo::IndexInfo()
: id(INT64_MIN),
keyPath(0),
unique(false),
multiEntry(false)
{
MOZ_COUNT_CTOR(IndexInfo);
}
IndexInfo::IndexInfo(const IndexInfo& aOther)
: name(aOther.name),
id(aOther.id),
keyPath(aOther.keyPath),
unique(aOther.unique),
multiEntry(aOther.multiEntry)
{
MOZ_COUNT_CTOR(IndexInfo);
}
IndexInfo::~IndexInfo()
{
MOZ_COUNT_DTOR(IndexInfo);
}
ObjectStoreInfo::ObjectStoreInfo()
: nextAutoIncrementId(0),
comittedAutoIncrementId(0)
{
MOZ_COUNT_CTOR(ObjectStoreInfo);
}
ObjectStoreInfo::~ObjectStoreInfo()
{
MOZ_COUNT_DTOR(ObjectStoreInfo);
}
IndexUpdateInfo::IndexUpdateInfo()
: indexId(0),
indexUnique(false)
{
MOZ_COUNT_CTOR(IndexUpdateInfo);
}
IndexUpdateInfo::IndexUpdateInfo(const IndexUpdateInfo& aOther)
: indexId(aOther.indexId),
indexUnique(aOther.indexUnique),
value(aOther.value)
{
MOZ_COUNT_CTOR(IndexUpdateInfo);
}
IndexUpdateInfo::~IndexUpdateInfo()
{
MOZ_COUNT_DTOR(IndexUpdateInfo);
}
#endif /* NS_BUILD_REFCNT_LOGGING */
// static
bool
DatabaseInfo::Get(nsIAtom* aId,
DatabaseInfo** aInfo)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aId, "Bad id!");
if (gDatabaseHash &&
gDatabaseHash->Get(aId, aInfo)) {
NS_IF_ADDREF(*aInfo);
return true;
}
return false;
}
// static
bool
DatabaseInfo::Put(DatabaseInfo* aInfo)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aInfo, "Null pointer!");
if (!gDatabaseHash) {
nsAutoPtr<DatabaseHash> databaseHash(new DatabaseHash());
databaseHash->Init();
gDatabaseHash = databaseHash.forget();
}
if (gDatabaseHash->Get(aInfo->id, nullptr)) {
NS_ERROR("Already know about this database!");
return false;
}
gDatabaseHash->Put(aInfo->id, aInfo);
return true;
}
// static
void
DatabaseInfo::Remove(nsIAtom* aId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (gDatabaseHash) {
gDatabaseHash->Remove(aId);
if (!gDatabaseHash->Count()) {
delete gDatabaseHash;
gDatabaseHash = nullptr;
}
}
}
bool
DatabaseInfo::GetObjectStoreNames(nsTArray<nsString>& aNames)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
aNames.Clear();
if (objectStoreHash) {
objectStoreHash->EnumerateRead(EnumerateObjectStoreNames, &aNames);
}
return true;
}
bool
DatabaseInfo::ContainsStoreName(const nsAString& aName)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
return objectStoreHash && objectStoreHash->Get(aName, nullptr);
}
ObjectStoreInfo*
DatabaseInfo::GetObjectStore(const nsAString& aName)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (objectStoreHash) {
return objectStoreHash->GetWeak(aName);
}
return nullptr;
}
bool
DatabaseInfo::PutObjectStore(ObjectStoreInfo* aInfo)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aInfo, "Null pointer!");
if (!objectStoreHash) {
nsAutoPtr<ObjectStoreInfoHash> hash(new ObjectStoreInfoHash());
hash->Init();
objectStoreHash = hash.forget();
}
if (objectStoreHash->Get(aInfo->name, nullptr)) {
NS_ERROR("Already have an entry for this objectstore!");
return false;
}
objectStoreHash->Put(aInfo->name, aInfo);
return true;
}
void
DatabaseInfo::RemoveObjectStore(const nsAString& aName)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(GetObjectStore(aName), "Don't know about this one!");
if (objectStoreHash) {
objectStoreHash->Remove(aName);
}
}
already_AddRefed<DatabaseInfo>
DatabaseInfo::Clone()
{
nsRefPtr<DatabaseInfo> dbInfo(new DatabaseInfo());
dbInfo->cloned = true;
dbInfo->name = name;
dbInfo->origin = origin;
dbInfo->version = version;
dbInfo->id = id;
dbInfo->filePath = filePath;
dbInfo->nextObjectStoreId = nextObjectStoreId;
dbInfo->nextIndexId = nextIndexId;
if (objectStoreHash) {
dbInfo->objectStoreHash = new ObjectStoreInfoHash();
dbInfo->objectStoreHash->Init();
objectStoreHash->EnumerateRead(CloneObjectStoreInfo,
dbInfo->objectStoreHash);
}
return dbInfo.forget();
}