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gecko-dev/dom/indexedDB/IDBTransaction.cpp

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/* -*- 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 "base/basictypes.h"
#include "IDBTransaction.h"
#include "nsIAppShell.h"
#include "nsIScriptContext.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "mozilla/storage.h"
#include "nsDOMClassInfoID.h"
#include "nsDOMLists.h"
#include "nsEventDispatcher.h"
#include "nsPIDOMWindow.h"
#include "nsProxyRelease.h"
#include "nsThreadUtils.h"
#include "nsWidgetsCID.h"
#include "AsyncConnectionHelper.h"
#include "DatabaseInfo.h"
#include "IDBCursor.h"
#include "IDBEvents.h"
#include "IDBFactory.h"
#include "IDBObjectStore.h"
#include "IndexedDatabaseManager.h"
#include "ProfilerHelpers.h"
#include "ReportInternalError.h"
#include "TransactionThreadPool.h"
#include "ipc/IndexedDBChild.h"
#define SAVEPOINT_NAME "savepoint"
using namespace mozilla::dom;
USING_INDEXEDDB_NAMESPACE
using mozilla::dom::quota::QuotaManager;
using mozilla::ErrorResult;
namespace {
NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
#ifdef MOZ_ENABLE_PROFILER_SPS
uint64_t gNextTransactionSerialNumber = 1;
#endif
PLDHashOperator
DoomCachedStatements(const nsACString& aQuery,
nsCOMPtr<mozIStorageStatement>& aStatement,
void* aUserArg)
{
CommitHelper* helper = static_cast<CommitHelper*>(aUserArg);
helper->AddDoomedObject(aStatement);
return PL_DHASH_REMOVE;
}
// This runnable doesn't actually do anything beyond "prime the pump" and get
// transactions in the right order on the transaction thread pool.
class StartTransactionRunnable : public nsIRunnable
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Run()
{
// NOP
return NS_OK;
}
};
// Could really use those NS_REFCOUNTING_HAHA_YEAH_RIGHT macros here.
NS_IMETHODIMP_(nsrefcnt) StartTransactionRunnable::AddRef()
{
return 2;
}
NS_IMETHODIMP_(nsrefcnt) StartTransactionRunnable::Release()
{
return 1;
}
NS_IMPL_QUERY_INTERFACE1(StartTransactionRunnable, nsIRunnable)
} // anonymous namespace
// static
already_AddRefed<IDBTransaction>
IDBTransaction::CreateInternal(IDBDatabase* aDatabase,
const Sequence<nsString>& aObjectStoreNames,
Mode aMode,
bool aDispatchDelayed,
bool aIsVersionChangeTransactionChild)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(IndexedDatabaseManager::IsMainProcess() || !aDispatchDelayed,
"No support for delayed-dispatch transactions in child "
"process!");
NS_ASSERTION(!aIsVersionChangeTransactionChild ||
(!IndexedDatabaseManager::IsMainProcess() &&
aMode == IDBTransaction::VERSION_CHANGE),
"Busted logic!");
nsRefPtr<IDBTransaction> transaction = new IDBTransaction(aDatabase);
transaction->SetScriptOwner(aDatabase->GetScriptOwner());
transaction->mDatabase = aDatabase;
transaction->mMode = aMode;
transaction->mDatabaseInfo = aDatabase->Info();
transaction->mObjectStoreNames.AppendElements(aObjectStoreNames);
transaction->mObjectStoreNames.Sort();
IndexedDBTransactionChild* actor = nullptr;
if (IndexedDatabaseManager::IsMainProcess()) {
if (aMode != IDBTransaction::VERSION_CHANGE) {
TransactionThreadPool* pool = TransactionThreadPool::GetOrCreate();
NS_ENSURE_TRUE(pool, nullptr);
static StartTransactionRunnable sStartTransactionRunnable;
pool->Dispatch(transaction, &sStartTransactionRunnable, false, nullptr);
}
}
else if (!aIsVersionChangeTransactionChild) {
IndexedDBDatabaseChild* dbActor = aDatabase->GetActorChild();
NS_ASSERTION(dbActor, "Must have an actor here!");
ipc::NormalTransactionParams params;
params.names().AppendElements(aObjectStoreNames);
params.mode() = aMode;
actor = new IndexedDBTransactionChild();
dbActor->SendPIndexedDBTransactionConstructor(actor, params);
}
if (!aDispatchDelayed) {
nsCOMPtr<nsIAppShell> appShell = do_GetService(kAppShellCID);
NS_ENSURE_TRUE(appShell, nullptr);
nsresult rv = appShell->RunBeforeNextEvent(transaction);
NS_ENSURE_SUCCESS(rv, nullptr);
transaction->mCreating = true;
}
if (actor) {
NS_ASSERTION(!IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
actor->SetTransaction(transaction);
}
return transaction.forget();
}
IDBTransaction::IDBTransaction(IDBDatabase* aDatabase)
: IDBWrapperCache(aDatabase),
mReadyState(IDBTransaction::INITIAL),
mMode(IDBTransaction::READ_ONLY),
mPendingRequests(0),
mSavepointCount(0),
mActorChild(nullptr),
mActorParent(nullptr),
mAbortCode(NS_OK),
#ifdef MOZ_ENABLE_PROFILER_SPS
mSerialNumber(gNextTransactionSerialNumber++),
#endif
mCreating(false)
#ifdef DEBUG
, mFiredCompleteOrAbort(false)
#endif
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
IDBTransaction::~IDBTransaction()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!mPendingRequests, "Should have no pending requests here!");
NS_ASSERTION(!mSavepointCount, "Should have released them all!");
NS_ASSERTION(!mConnection, "Should have called CommitOrRollback!");
NS_ASSERTION(!mCreating, "Should have been cleared already!");
NS_ASSERTION(mFiredCompleteOrAbort, "Should have fired event!");
NS_ASSERTION(!mActorParent, "Actor parent owns us, how can we be dying?!");
if (mActorChild) {
NS_ASSERTION(!IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
mActorChild->Send__delete__(mActorChild);
NS_ASSERTION(!mActorChild, "Should have cleared in Send__delete__!");
}
}
void
IDBTransaction::OnNewRequest()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!mPendingRequests) {
NS_ASSERTION(mReadyState == IDBTransaction::INITIAL,
"Reusing a transaction!");
mReadyState = IDBTransaction::LOADING;
}
++mPendingRequests;
}
void
IDBTransaction::OnRequestFinished()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mPendingRequests, "Mismatched calls!");
--mPendingRequests;
if (!mPendingRequests) {
NS_ASSERTION(NS_FAILED(mAbortCode) || mReadyState == IDBTransaction::LOADING,
"Bad state!");
mReadyState = IDBTransaction::COMMITTING;
CommitOrRollback();
}
}
void
IDBTransaction::OnRequestDisconnected()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mPendingRequests, "Mismatched calls!");
--mPendingRequests;
}
void
IDBTransaction::RemoveObjectStore(const nsAString& aName)
{
NS_ASSERTION(mMode == IDBTransaction::VERSION_CHANGE,
"Only remove object stores on VERSION_CHANGE transactions");
mDatabaseInfo->RemoveObjectStore(aName);
for (uint32_t i = 0; i < mCreatedObjectStores.Length(); i++) {
if (mCreatedObjectStores[i]->Name() == aName) {
nsRefPtr<IDBObjectStore> objectStore = mCreatedObjectStores[i];
mCreatedObjectStores.RemoveElementAt(i);
mDeletedObjectStores.AppendElement(objectStore);
break;
}
}
}
void
IDBTransaction::SetTransactionListener(IDBTransactionListener* aListener)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!mListener, "Shouldn't already have a listener!");
mListener = aListener;
}
nsresult
IDBTransaction::CommitOrRollback()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!IndexedDatabaseManager::IsMainProcess()) {
if (mActorChild) {
mActorChild->SendAllRequestsFinished();
}
return NS_OK;
}
nsRefPtr<CommitHelper> helper =
new CommitHelper(this, mListener, mCreatedObjectStores);
TransactionThreadPool* pool = TransactionThreadPool::GetOrCreate();
NS_ENSURE_STATE(pool);
mCachedStatements.Enumerate(DoomCachedStatements, helper);
NS_ASSERTION(!mCachedStatements.Count(), "Statements left!");
nsresult rv = pool->Dispatch(this, helper, true, helper);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
bool
IDBTransaction::StartSavepoint()
{
NS_PRECONDITION(!NS_IsMainThread(), "Wrong thread!");
NS_PRECONDITION(mConnection, "No connection!");
nsCOMPtr<mozIStorageStatement> stmt = GetCachedStatement(NS_LITERAL_CSTRING(
"SAVEPOINT " SAVEPOINT_NAME
));
NS_ENSURE_TRUE(stmt, false);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, false);
if (IsWriteAllowed()) {
mUpdateFileRefcountFunction->StartSavepoint();
}
++mSavepointCount;
return true;
}
nsresult
IDBTransaction::ReleaseSavepoint()
{
NS_PRECONDITION(!NS_IsMainThread(), "Wrong thread!");
NS_PRECONDITION(mConnection, "No connection!");
NS_ASSERTION(mSavepointCount, "Mismatch!");
nsCOMPtr<mozIStorageStatement> stmt = GetCachedStatement(NS_LITERAL_CSTRING(
"RELEASE SAVEPOINT " SAVEPOINT_NAME
));
NS_ENSURE_TRUE(stmt, NS_OK);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, NS_OK);
if (IsWriteAllowed()) {
mUpdateFileRefcountFunction->ReleaseSavepoint();
}
--mSavepointCount;
return NS_OK;
}
void
IDBTransaction::RollbackSavepoint()
{
NS_PRECONDITION(!NS_IsMainThread(), "Wrong thread!");
NS_PRECONDITION(mConnection, "No connection!");
NS_ASSERTION(mSavepointCount == 1, "Mismatch!");
mSavepointCount = 0;
nsCOMPtr<mozIStorageStatement> stmt = GetCachedStatement(NS_LITERAL_CSTRING(
"ROLLBACK TO SAVEPOINT " SAVEPOINT_NAME
));
NS_ENSURE_TRUE_VOID(stmt);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->Execute();
NS_ENSURE_SUCCESS_VOID(rv);
if (IsWriteAllowed()) {
mUpdateFileRefcountFunction->RollbackSavepoint();
}
}
nsresult
IDBTransaction::GetOrCreateConnection(mozIStorageConnection** aResult)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
PROFILER_LABEL("IndexedDB", "IDBTransaction::GetOrCreateConnection");
if (mDatabase->IsInvalidated()) {
return NS_ERROR_NOT_AVAILABLE;
}
if (!mConnection) {
nsCOMPtr<mozIStorageConnection> connection =
IDBFactory::GetConnection(mDatabase->FilePath(), mDatabase->Type(),
mDatabase->Group(), mDatabase->Origin());
NS_ENSURE_TRUE(connection, NS_ERROR_FAILURE);
nsresult rv;
nsRefPtr<UpdateRefcountFunction> function;
nsCString beginTransaction;
if (mMode != IDBTransaction::READ_ONLY) {
function = new UpdateRefcountFunction(Database()->Manager());
NS_ENSURE_TRUE(function, NS_ERROR_OUT_OF_MEMORY);
rv = connection->CreateFunction(
NS_LITERAL_CSTRING("update_refcount"), 2, function);
NS_ENSURE_SUCCESS(rv, rv);
beginTransaction.AssignLiteral("BEGIN IMMEDIATE TRANSACTION;");
}
else {
beginTransaction.AssignLiteral("BEGIN TRANSACTION;");
}
nsCOMPtr<mozIStorageStatement> stmt;
rv = connection->CreateStatement(beginTransaction, getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
function.swap(mUpdateFileRefcountFunction);
connection.swap(mConnection);
}
nsCOMPtr<mozIStorageConnection> result(mConnection);
result.forget(aResult);
return NS_OK;
}
already_AddRefed<mozIStorageStatement>
IDBTransaction::GetCachedStatement(const nsACString& aQuery)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aQuery.IsEmpty(), "Empty sql statement!");
NS_ASSERTION(mConnection, "No connection!");
nsCOMPtr<mozIStorageStatement> stmt;
if (!mCachedStatements.Get(aQuery, getter_AddRefs(stmt))) {
nsresult rv = mConnection->CreateStatement(aQuery, getter_AddRefs(stmt));
#ifdef DEBUG
if (NS_FAILED(rv)) {
nsCString error;
error.AppendLiteral("The statement `");
error.Append(aQuery);
error.AppendLiteral("` failed to compile with the error message `");
nsCString msg;
(void)mConnection->GetLastErrorString(msg);
error.Append(msg);
error.AppendLiteral("`.");
NS_ERROR(error.get());
}
#endif
NS_ENSURE_SUCCESS(rv, nullptr);
mCachedStatements.Put(aQuery, stmt);
}
return stmt.forget();
}
bool
IDBTransaction::IsOpen() const
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
// If we haven't started anything then we're open.
if (mReadyState == IDBTransaction::INITIAL) {
return true;
}
// If we've already started then we need to check to see if we still have the
// mCreating flag set. If we do (i.e. we haven't returned to the event loop
// from the time we were created) then we are open. Otherwise check the
// currently running transaction to see if it's the same. We only allow other
// requests to be made if this transaction is currently running.
if (mReadyState == IDBTransaction::LOADING) {
if (mCreating) {
return true;
}
if (AsyncConnectionHelper::GetCurrentTransaction() == this) {
return true;
}
}
return false;
}
already_AddRefed<IDBObjectStore>
IDBTransaction::GetOrCreateObjectStore(const nsAString& aName,
ObjectStoreInfo* aObjectStoreInfo,
bool aCreating)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aObjectStoreInfo, "Null pointer!");
NS_ASSERTION(!aCreating || GetMode() == IDBTransaction::VERSION_CHANGE,
"How else can we create here?!");
nsRefPtr<IDBObjectStore> retval;
for (uint32_t index = 0; index < mCreatedObjectStores.Length(); index++) {
nsRefPtr<IDBObjectStore>& objectStore = mCreatedObjectStores[index];
if (objectStore->Name() == aName) {
retval = objectStore;
return retval.forget();
}
}
retval = IDBObjectStore::Create(this, aObjectStoreInfo, mDatabaseInfo->id,
aCreating);
mCreatedObjectStores.AppendElement(retval);
return retval.forget();
}
already_AddRefed<FileInfo>
IDBTransaction::GetFileInfo(nsIDOMBlob* aBlob)
{
nsRefPtr<FileInfo> fileInfo;
mCreatedFileInfos.Get(aBlob, getter_AddRefs(fileInfo));
return fileInfo.forget();
}
void
IDBTransaction::AddFileInfo(nsIDOMBlob* aBlob, FileInfo* aFileInfo)
{
mCreatedFileInfos.Put(aBlob, aFileInfo);
}
void
IDBTransaction::ClearCreatedFileInfos()
{
mCreatedFileInfos.Clear();
}
nsresult
IDBTransaction::AbortInternal(nsresult aAbortCode,
already_AddRefed<DOMError> aError)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<DOMError> error = aError;
if (IsFinished()) {
return NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR;
}
if (mActorChild) {
NS_ASSERTION(!IndexedDatabaseManager::IsMainProcess(), "Wrong process!");
mActorChild->SendAbort(aAbortCode);
}
bool needToCommitOrRollback = mReadyState == IDBTransaction::INITIAL;
mAbortCode = aAbortCode;
mReadyState = IDBTransaction::DONE;
mError = error.forget();
if (GetMode() == IDBTransaction::VERSION_CHANGE) {
// If a version change transaction is aborted, we must revert the world
// back to its previous state.
mDatabase->RevertToPreviousState();
DatabaseInfo* dbInfo = mDatabase->Info();
for (uint32_t i = 0; i < mCreatedObjectStores.Length(); i++) {
nsRefPtr<IDBObjectStore>& objectStore = mCreatedObjectStores[i];
ObjectStoreInfo* info = dbInfo->GetObjectStore(objectStore->Name());
if (!info) {
info = new ObjectStoreInfo(*objectStore->Info());
info->indexes.Clear();
}
objectStore->SetInfo(info);
}
for (uint32_t i = 0; i < mDeletedObjectStores.Length(); i++) {
nsRefPtr<IDBObjectStore>& objectStore = mDeletedObjectStores[i];
ObjectStoreInfo* info = dbInfo->GetObjectStore(objectStore->Name());
if (!info) {
info = new ObjectStoreInfo(*objectStore->Info());
info->indexes.Clear();
}
objectStore->SetInfo(info);
}
// and then the db must be closed
mDatabase->Close();
}
// Fire the abort event if there are no outstanding requests. Otherwise the
// abort event will be fired when all outstanding requests finish.
if (needToCommitOrRollback) {
return CommitOrRollback();
}
return NS_OK;
}
nsresult
IDBTransaction::Abort(IDBRequest* aRequest)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aRequest, "This is undesirable.");
ErrorResult rv;
nsRefPtr<DOMError> error = aRequest->GetError(rv);
return AbortInternal(aRequest->GetErrorCode(), error.forget());
}
nsresult
IDBTransaction::Abort(nsresult aErrorCode)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<DOMError> error = new DOMError(GetOwner(), aErrorCode);
return AbortInternal(aErrorCode, error.forget());
}
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBTransaction)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBTransaction,
IDBWrapperCache)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDatabase)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mError)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCreatedObjectStores)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDeletedObjectStores)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBTransaction, IDBWrapperCache)
// Don't unlink mDatabase!
NS_IMPL_CYCLE_COLLECTION_UNLINK(mError)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCreatedObjectStores)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDeletedObjectStores)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBTransaction)
NS_INTERFACE_MAP_ENTRY(nsIRunnable)
NS_INTERFACE_MAP_END_INHERITING(IDBWrapperCache)
NS_IMPL_ADDREF_INHERITED(IDBTransaction, IDBWrapperCache)
NS_IMPL_RELEASE_INHERITED(IDBTransaction, IDBWrapperCache)
JSObject*
IDBTransaction::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
{
return IDBTransactionBinding::Wrap(aCx, aScope, this);
}
mozilla::dom::IDBTransactionMode
IDBTransaction::GetMode(ErrorResult& aRv) const
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
switch (mMode) {
case READ_ONLY:
return mozilla::dom::IDBTransactionMode::Readonly;
case READ_WRITE:
return mozilla::dom::IDBTransactionMode::Readwrite;
case VERSION_CHANGE:
return mozilla::dom::IDBTransactionMode::Versionchange;
case MODE_INVALID:
default:
aRv.Throw(NS_ERROR_UNEXPECTED);
return mozilla::dom::IDBTransactionMode::Readonly;
}
}
DOMError*
IDBTransaction::GetError(ErrorResult& aRv)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
return mError;
}
already_AddRefed<nsIDOMDOMStringList>
IDBTransaction::GetObjectStoreNames(ErrorResult& aRv)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<nsDOMStringList> list(new nsDOMStringList());
nsAutoTArray<nsString, 10> stackArray;
nsTArray<nsString>* arrayOfNames;
if (mMode == IDBTransaction::VERSION_CHANGE) {
mDatabaseInfo->GetObjectStoreNames(stackArray);
arrayOfNames = &stackArray;
}
else {
arrayOfNames = &mObjectStoreNames;
}
uint32_t count = arrayOfNames->Length();
for (uint32_t index = 0; index < count; index++) {
if (!list->Add(arrayOfNames->ElementAt(index))) {
IDB_WARNING("Failed to add element!");
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return nullptr;
}
}
return list.forget();
}
already_AddRefed<IDBObjectStore>
IDBTransaction::ObjectStore(const nsAString& aName, ErrorResult& aRv)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (IsFinished()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return nullptr;
}
ObjectStoreInfo* info = nullptr;
if (mMode == IDBTransaction::VERSION_CHANGE ||
mObjectStoreNames.Contains(aName)) {
info = mDatabaseInfo->GetObjectStore(aName);
}
if (!info) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_FOUND_ERR);
return nullptr;
}
nsRefPtr<IDBObjectStore> objectStore =
GetOrCreateObjectStore(aName, info, false);
if (!objectStore) {
IDB_WARNING("Failed to get or create object store!");
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
return nullptr;
}
return objectStore.forget();
}
nsresult
IDBTransaction::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
{
aVisitor.mCanHandle = true;
aVisitor.mParentTarget = mDatabase;
return NS_OK;
}
NS_IMETHODIMP
IDBTransaction::Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
// We're back at the event loop, no longer newborn.
mCreating = false;
// Maybe set the readyState to DONE if there were no requests generated.
if (mReadyState == IDBTransaction::INITIAL) {
mReadyState = IDBTransaction::DONE;
if (NS_FAILED(CommitOrRollback())) {
NS_WARNING("Failed to commit!");
}
}
return NS_OK;
}
CommitHelper::CommitHelper(
IDBTransaction* aTransaction,
IDBTransactionListener* aListener,
const nsTArray<nsRefPtr<IDBObjectStore> >& aUpdatedObjectStores)
: mTransaction(aTransaction),
mListener(aListener),
mAbortCode(aTransaction->mAbortCode)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mConnection.swap(aTransaction->mConnection);
mUpdateFileRefcountFunction.swap(aTransaction->mUpdateFileRefcountFunction);
for (uint32_t i = 0; i < aUpdatedObjectStores.Length(); i++) {
ObjectStoreInfo* info = aUpdatedObjectStores[i]->Info();
if (info->comittedAutoIncrementId != info->nextAutoIncrementId) {
mAutoIncrementObjectStores.AppendElement(aUpdatedObjectStores[i]);
}
}
}
CommitHelper::CommitHelper(IDBTransaction* aTransaction,
nsresult aAbortCode)
: mTransaction(aTransaction),
mAbortCode(aAbortCode)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
CommitHelper::~CommitHelper()
{
}
NS_IMPL_ISUPPORTS1(CommitHelper, nsIRunnable)
NS_IMETHODIMP
CommitHelper::Run()
{
if (NS_IsMainThread()) {
PROFILER_MAIN_THREAD_LABEL("IndexedDB", "CommitHelper::Run");
NS_ASSERTION(mDoomedObjects.IsEmpty(), "Didn't release doomed objects!");
mTransaction->mReadyState = IDBTransaction::DONE;
// Release file infos on the main thread, so they will eventually get
// destroyed on correct thread.
mTransaction->ClearCreatedFileInfos();
if (mUpdateFileRefcountFunction) {
mUpdateFileRefcountFunction->ClearFileInfoEntries();
mUpdateFileRefcountFunction = nullptr;
}
nsCOMPtr<nsIDOMEvent> event;
if (NS_FAILED(mAbortCode)) {
if (mTransaction->GetMode() == IDBTransaction::VERSION_CHANGE) {
// This will make the database take a snapshot of it's DatabaseInfo
mTransaction->Database()->Close();
// Then remove the info from the hash as it contains invalid data.
DatabaseInfo::Remove(mTransaction->Database()->Id());
}
event = CreateGenericEvent(mTransaction,
NS_LITERAL_STRING(ABORT_EVT_STR),
eDoesBubble, eNotCancelable);
// The transaction may already have an error object (e.g. if one of the
// requests failed). If it doesn't, and it wasn't aborted
// programmatically, create one now.
if (!mTransaction->mError &&
mAbortCode != NS_ERROR_DOM_INDEXEDDB_ABORT_ERR) {
mTransaction->mError = new DOMError(mTransaction->GetOwner(), mAbortCode);
}
}
else {
event = CreateGenericEvent(mTransaction,
NS_LITERAL_STRING(COMPLETE_EVT_STR),
eDoesNotBubble, eNotCancelable);
}
IDB_ENSURE_TRUE(event, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (mListener) {
mListener->NotifyTransactionPreComplete(mTransaction);
}
IDB_PROFILER_MARK("IndexedDB Transaction %llu: Complete (rv = %lu)",
"IDBTransaction[%llu] MT Complete",
mTransaction->GetSerialNumber(), mAbortCode);
bool dummy;
if (NS_FAILED(mTransaction->DispatchEvent(event, &dummy))) {
NS_WARNING("Dispatch failed!");
}
#ifdef DEBUG
mTransaction->mFiredCompleteOrAbort = true;
#endif
if (mListener) {
mListener->NotifyTransactionPostComplete(mTransaction);
}
mTransaction = nullptr;
return NS_OK;
}
PROFILER_LABEL("IndexedDB", "CommitHelper::Run");
IDBDatabase* database = mTransaction->Database();
if (database->IsInvalidated()) {
IDB_REPORT_INTERNAL_ERR();
mAbortCode = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (mConnection) {
QuotaManager::SetCurrentWindow(database->GetOwner());
if (NS_SUCCEEDED(mAbortCode) && mUpdateFileRefcountFunction &&
NS_FAILED(mUpdateFileRefcountFunction->WillCommit(mConnection))) {
IDB_REPORT_INTERNAL_ERR();
mAbortCode = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (NS_SUCCEEDED(mAbortCode) && NS_FAILED(WriteAutoIncrementCounts())) {
IDB_REPORT_INTERNAL_ERR();
mAbortCode = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
if (NS_SUCCEEDED(mAbortCode)) {
NS_NAMED_LITERAL_CSTRING(release, "COMMIT TRANSACTION");
nsresult rv = mConnection->ExecuteSimpleSQL(release);
if (NS_SUCCEEDED(rv)) {
if (mUpdateFileRefcountFunction) {
mUpdateFileRefcountFunction->DidCommit();
}
CommitAutoIncrementCounts();
}
else if (rv == NS_ERROR_FILE_NO_DEVICE_SPACE) {
// mozstorage translates SQLITE_FULL to NS_ERROR_FILE_NO_DEVICE_SPACE,
// which we know better as NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR.
mAbortCode = NS_ERROR_DOM_INDEXEDDB_QUOTA_ERR;
}
else {
IDB_REPORT_INTERNAL_ERR();
mAbortCode = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
if (NS_FAILED(mAbortCode)) {
if (mUpdateFileRefcountFunction) {
mUpdateFileRefcountFunction->DidAbort();
}
RevertAutoIncrementCounts();
NS_NAMED_LITERAL_CSTRING(rollback, "ROLLBACK TRANSACTION");
if (NS_FAILED(mConnection->ExecuteSimpleSQL(rollback))) {
NS_WARNING("Failed to rollback transaction!");
}
}
}
mDoomedObjects.Clear();
if (mConnection) {
if (mUpdateFileRefcountFunction) {
nsresult rv = mConnection->RemoveFunction(
NS_LITERAL_CSTRING("update_refcount"));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to remove function!");
}
}
mConnection->Close();
mConnection = nullptr;
QuotaManager::SetCurrentWindow(nullptr);
}
return NS_OK;
}
nsresult
CommitHelper::WriteAutoIncrementCounts()
{
nsCOMPtr<mozIStorageStatement> stmt;
nsresult rv;
for (uint32_t i = 0; i < mAutoIncrementObjectStores.Length(); i++) {
ObjectStoreInfo* info = mAutoIncrementObjectStores[i]->Info();
if (!stmt) {
rv = mConnection->CreateStatement(NS_LITERAL_CSTRING(
"UPDATE object_store SET auto_increment = :ai "
"WHERE id = :osid;"), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
}
else {
stmt->Reset();
}
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("osid"), info->id);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("ai"),
info->nextAutoIncrementId);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
void
CommitHelper::CommitAutoIncrementCounts()
{
for (uint32_t i = 0; i < mAutoIncrementObjectStores.Length(); i++) {
ObjectStoreInfo* info = mAutoIncrementObjectStores[i]->Info();
info->comittedAutoIncrementId = info->nextAutoIncrementId;
}
}
void
CommitHelper::RevertAutoIncrementCounts()
{
for (uint32_t i = 0; i < mAutoIncrementObjectStores.Length(); i++) {
ObjectStoreInfo* info = mAutoIncrementObjectStores[i]->Info();
info->nextAutoIncrementId = info->comittedAutoIncrementId;
}
}
NS_IMPL_ISUPPORTS1(UpdateRefcountFunction, mozIStorageFunction)
NS_IMETHODIMP
UpdateRefcountFunction::OnFunctionCall(mozIStorageValueArray* aValues,
nsIVariant** _retval)
{
*_retval = nullptr;
uint32_t numEntries;
nsresult rv = aValues->GetNumEntries(&numEntries);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(numEntries == 2, "unexpected number of arguments");
#ifdef DEBUG
int32_t type1 = mozIStorageValueArray::VALUE_TYPE_NULL;
aValues->GetTypeOfIndex(0, &type1);
int32_t type2 = mozIStorageValueArray::VALUE_TYPE_NULL;
aValues->GetTypeOfIndex(1, &type2);
NS_ASSERTION(!(type1 == mozIStorageValueArray::VALUE_TYPE_NULL &&
type2 == mozIStorageValueArray::VALUE_TYPE_NULL),
"Shouldn't be called!");
#endif
rv = ProcessValue(aValues, 0, eDecrement);
NS_ENSURE_SUCCESS(rv, rv);
rv = ProcessValue(aValues, 1, eIncrement);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
UpdateRefcountFunction::WillCommit(mozIStorageConnection* aConnection)
{
DatabaseUpdateFunction function(aConnection, this);
mFileInfoEntries.EnumerateRead(DatabaseUpdateCallback, &function);
nsresult rv = function.ErrorCode();
NS_ENSURE_SUCCESS(rv, rv);
rv = CreateJournals();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
void
UpdateRefcountFunction::DidCommit()
{
mFileInfoEntries.EnumerateRead(FileInfoUpdateCallback, nullptr);
nsresult rv = RemoveJournals(mJournalsToRemoveAfterCommit);
NS_ENSURE_SUCCESS_VOID(rv);
}
void
UpdateRefcountFunction::DidAbort()
{
nsresult rv = RemoveJournals(mJournalsToRemoveAfterAbort);
NS_ENSURE_SUCCESS_VOID(rv);
}
nsresult
UpdateRefcountFunction::ProcessValue(mozIStorageValueArray* aValues,
int32_t aIndex,
UpdateType aUpdateType)
{
int32_t type;
aValues->GetTypeOfIndex(aIndex, &type);
if (type == mozIStorageValueArray::VALUE_TYPE_NULL) {
return NS_OK;
}
nsString ids;
aValues->GetString(aIndex, ids);
nsTArray<int64_t> fileIds;
nsresult rv = IDBObjectStore::ConvertFileIdsToArray(ids, fileIds);
NS_ENSURE_SUCCESS(rv, rv);
for (uint32_t i = 0; i < fileIds.Length(); i++) {
int64_t id = fileIds.ElementAt(i);
FileInfoEntry* entry;
if (!mFileInfoEntries.Get(id, &entry)) {
nsRefPtr<FileInfo> fileInfo = mFileManager->GetFileInfo(id);
NS_ASSERTION(fileInfo, "Shouldn't be null!");
nsAutoPtr<FileInfoEntry> newEntry(new FileInfoEntry(fileInfo));
mFileInfoEntries.Put(id, newEntry);
entry = newEntry.forget();
}
if (mInSavepoint) {
mSavepointEntriesIndex.Put(id, entry);
}
switch (aUpdateType) {
case eIncrement:
entry->mDelta++;
if (mInSavepoint) {
entry->mSavepointDelta++;
}
break;
case eDecrement:
entry->mDelta--;
if (mInSavepoint) {
entry->mSavepointDelta--;
}
break;
default:
NS_NOTREACHED("Unknown update type!");
}
}
return NS_OK;
}
nsresult
UpdateRefcountFunction::CreateJournals()
{
nsCOMPtr<nsIFile> journalDirectory = mFileManager->GetJournalDirectory();
NS_ENSURE_TRUE(journalDirectory, NS_ERROR_FAILURE);
for (uint32_t i = 0; i < mJournalsToCreateBeforeCommit.Length(); i++) {
int64_t id = mJournalsToCreateBeforeCommit[i];
nsCOMPtr<nsIFile> file =
mFileManager->GetFileForId(journalDirectory, id);
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
nsresult rv = file->Create(nsIFile::NORMAL_FILE_TYPE, 0644);
NS_ENSURE_SUCCESS(rv, rv);
mJournalsToRemoveAfterAbort.AppendElement(id);
}
return NS_OK;
}
nsresult
UpdateRefcountFunction::RemoveJournals(const nsTArray<int64_t>& aJournals)
{
nsCOMPtr<nsIFile> journalDirectory = mFileManager->GetJournalDirectory();
NS_ENSURE_TRUE(journalDirectory, NS_ERROR_FAILURE);
for (uint32_t index = 0; index < aJournals.Length(); index++) {
nsCOMPtr<nsIFile> file =
mFileManager->GetFileForId(journalDirectory, aJournals[index]);
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
if (NS_FAILED(file->Remove(false))) {
NS_WARNING("Failed to removed journal!");
}
}
return NS_OK;
}
PLDHashOperator
UpdateRefcountFunction::DatabaseUpdateCallback(const uint64_t& aKey,
FileInfoEntry* aValue,
void* aUserArg)
{
if (!aValue->mDelta) {
return PL_DHASH_NEXT;
}
DatabaseUpdateFunction* function =
static_cast<DatabaseUpdateFunction*>(aUserArg);
if (!function->Update(aKey, aValue->mDelta)) {
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
PLDHashOperator
UpdateRefcountFunction::FileInfoUpdateCallback(const uint64_t& aKey,
FileInfoEntry* aValue,
void* aUserArg)
{
if (aValue->mDelta) {
aValue->mFileInfo->UpdateDBRefs(aValue->mDelta);
}
return PL_DHASH_NEXT;
}
PLDHashOperator
UpdateRefcountFunction::RollbackSavepointCallback(const uint64_t& aKey,
FileInfoEntry* aValue,
void* aUserArg)
{
aValue->mDelta -= aValue->mSavepointDelta;
return PL_DHASH_NEXT;
}
bool
UpdateRefcountFunction::DatabaseUpdateFunction::Update(int64_t aId,
int32_t aDelta)
{
nsresult rv = UpdateInternal(aId, aDelta);
if (NS_FAILED(rv)) {
mErrorCode = rv;
return false;
}
return true;
}
nsresult
UpdateRefcountFunction::DatabaseUpdateFunction::UpdateInternal(int64_t aId,
int32_t aDelta)
{
nsresult rv;
if (!mUpdateStatement) {
rv = mConnection->CreateStatement(NS_LITERAL_CSTRING(
"UPDATE file SET refcount = refcount + :delta WHERE id = :id"
), getter_AddRefs(mUpdateStatement));
NS_ENSURE_SUCCESS(rv, rv);
}
mozStorageStatementScoper updateScoper(mUpdateStatement);
rv = mUpdateStatement->BindInt32ByName(NS_LITERAL_CSTRING("delta"), aDelta);
NS_ENSURE_SUCCESS(rv, rv);
rv = mUpdateStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"), aId);
NS_ENSURE_SUCCESS(rv, rv);
rv = mUpdateStatement->Execute();
NS_ENSURE_SUCCESS(rv, rv);
int32_t rows;
rv = mConnection->GetAffectedRows(&rows);
NS_ENSURE_SUCCESS(rv, rv);
if (rows > 0) {
if (!mSelectStatement) {
rv = mConnection->CreateStatement(NS_LITERAL_CSTRING(
"SELECT id FROM file where id = :id"
), getter_AddRefs(mSelectStatement));
NS_ENSURE_SUCCESS(rv, rv);
}
mozStorageStatementScoper selectScoper(mSelectStatement);
rv = mSelectStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"), aId);
NS_ENSURE_SUCCESS(rv, rv);
bool hasResult;
rv = mSelectStatement->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
if (!hasResult) {
// Don't have to create the journal here, we can create all at once,
// just before commit
mFunction->mJournalsToCreateBeforeCommit.AppendElement(aId);
}
return NS_OK;
}
if (!mInsertStatement) {
rv = mConnection->CreateStatement(NS_LITERAL_CSTRING(
"INSERT INTO file (id, refcount) VALUES(:id, :delta)"
), getter_AddRefs(mInsertStatement));
NS_ENSURE_SUCCESS(rv, rv);
}
mozStorageStatementScoper insertScoper(mInsertStatement);
rv = mInsertStatement->BindInt64ByName(NS_LITERAL_CSTRING("id"), aId);
NS_ENSURE_SUCCESS(rv, rv);
rv = mInsertStatement->BindInt32ByName(NS_LITERAL_CSTRING("delta"), aDelta);
NS_ENSURE_SUCCESS(rv, rv);
rv = mInsertStatement->Execute();
NS_ENSURE_SUCCESS(rv, rv);
mFunction->mJournalsToRemoveAfterCommit.AppendElement(aId);
return NS_OK;
}
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