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gecko/dom/indexedDB/IndexedDatabaseManager.cpp
Kyle Huey 3b3b755501 Bug 726378: Unprefix IndexedDB. r=sicking
2012-06-29 09:48:35 -07:00

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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 "IndexedDatabaseManager.h"
#include "DatabaseInfo.h"
#include "nsIAtom.h"
#include "nsIConsoleService.h"
#include "nsIDOMScriptObjectFactory.h"
#include "nsIFile.h"
#include "nsIFileStorage.h"
#include "nsIObserverService.h"
#include "nsIScriptError.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsIScriptSecurityManager.h"
#include "nsISHEntry.h"
#include "nsISimpleEnumerator.h"
#include "nsITimer.h"
#include "mozilla/dom/file/FileService.h"
#include "mozilla/LazyIdleThread.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "mozilla/storage.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsContentUtils.h"
#include "nsDirectoryServiceUtils.h"
#include "nsEventDispatcher.h"
#include "nsThreadUtils.h"
#include "nsXPCOM.h"
#include "nsXPCOMPrivate.h"
#include "test_quota.h"
#include "xpcpublic.h"
#include "AsyncConnectionHelper.h"
#include "CheckQuotaHelper.h"
#include "IDBDatabase.h"
#include "IDBEvents.h"
#include "IDBFactory.h"
#include "IDBKeyRange.h"
#include "OpenDatabaseHelper.h"
#include "TransactionThreadPool.h"
// The amount of time, in milliseconds, that our IO thread will stay alive
// after the last event it processes.
#define DEFAULT_THREAD_TIMEOUT_MS 30000
// The amount of time, in milliseconds, that we will wait for active database
// transactions on shutdown before aborting them.
#define DEFAULT_SHUTDOWN_TIMER_MS 30000
// Amount of space that IndexedDB databases may use by default in megabytes.
#define DEFAULT_QUOTA_MB 50
// Preference that users can set to override DEFAULT_QUOTA_MB
#define PREF_INDEXEDDB_QUOTA "dom.indexedDB.warningQuota"
// profile-before-change, when we need to shut down IDB
#define PROFILE_BEFORE_CHANGE_OBSERVER_ID "profile-before-change"
USING_INDEXEDDB_NAMESPACE
using namespace mozilla::services;
using mozilla::Preferences;
using mozilla::dom::file::FileService;
static NS_DEFINE_CID(kDOMSOF_CID, NS_DOM_SCRIPT_OBJECT_FACTORY_CID);
namespace {
PRInt32 gShutdown = 0;
PRInt32 gClosed = 0;
// Does not hold a reference.
IndexedDatabaseManager* gInstance = nsnull;
PRInt32 gIndexedDBQuotaMB = DEFAULT_QUOTA_MB;
bool
GetBaseFilename(const nsAString& aFilename,
nsAString& aBaseFilename)
{
NS_ASSERTION(!aFilename.IsEmpty(), "Bad argument!");
NS_NAMED_LITERAL_STRING(sqlite, ".sqlite");
nsAString::size_type filenameLen = aFilename.Length();
nsAString::size_type sqliteLen = sqlite.Length();
if (sqliteLen > filenameLen ||
Substring(aFilename, filenameLen - sqliteLen, sqliteLen) != sqlite) {
return false;
}
aBaseFilename = Substring(aFilename, 0, filenameLen - sqliteLen);
return true;
}
class QuotaCallback MOZ_FINAL : public mozIStorageQuotaCallback
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD
QuotaExceeded(const nsACString& aFilename,
PRInt64 aCurrentSizeLimit,
PRInt64 aCurrentTotalSize,
nsISupports* aUserData,
PRInt64* _retval)
{
if (IndexedDatabaseManager::QuotaIsLifted()) {
*_retval = 0;
return NS_OK;
}
return NS_ERROR_FAILURE;
}
};
NS_IMPL_THREADSAFE_ISUPPORTS1(QuotaCallback, mozIStorageQuotaCallback)
// Adds all databases in the hash to the given array.
template <class T>
PLDHashOperator
EnumerateToTArray(const nsACString& aKey,
nsTArray<IDBDatabase*>* aValue,
void* aUserArg)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aKey.IsEmpty(), "Empty key!");
NS_ASSERTION(aValue, "Null pointer!");
NS_ASSERTION(aUserArg, "Null pointer!");
nsTArray<T>* array =
static_cast<nsTArray<T>*>(aUserArg);
if (!array->AppendElements(*aValue)) {
NS_WARNING("Out of memory!");
return PL_DHASH_STOP;
}
return PL_DHASH_NEXT;
}
PLDHashOperator
InvalidateAllFileManagers(const nsACString& aKey,
nsTArray<nsRefPtr<FileManager> >* aValue,
void* aUserArg)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aKey.IsEmpty(), "Empty key!");
NS_ASSERTION(aValue, "Null pointer!");
for (PRUint32 i = 0; i < aValue->Length(); i++) {
nsRefPtr<FileManager> fileManager = aValue->ElementAt(i);
fileManager->Invalidate();
}
return PL_DHASH_NEXT;
}
} // anonymous namespace
IndexedDatabaseManager::IndexedDatabaseManager()
: mCurrentWindowIndex(BAD_TLS_INDEX),
mQuotaHelperMutex("IndexedDatabaseManager.mQuotaHelperMutex"),
mFileMutex("IndexedDatabaseManager.mFileMutex")
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance, "More than one instance!");
}
IndexedDatabaseManager::~IndexedDatabaseManager()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance || gInstance == this, "Different instances!");
gInstance = nsnull;
}
bool IndexedDatabaseManager::sIsMainProcess = false;
// static
already_AddRefed<IndexedDatabaseManager>
IndexedDatabaseManager::GetOrCreate()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (IsShuttingDown()) {
NS_ERROR("Calling GetOrCreateInstance() after shutdown!");
return nsnull;
}
nsRefPtr<IndexedDatabaseManager> instance(gInstance);
if (!instance) {
sIsMainProcess = XRE_GetProcessType() == GeckoProcessType_Default;
instance = new IndexedDatabaseManager();
instance->mLiveDatabases.Init();
instance->mQuotaHelperHash.Init();
instance->mFileManagers.Init();
// We need a thread-local to hold the current window.
NS_ASSERTION(instance->mCurrentWindowIndex == BAD_TLS_INDEX, "Huh?");
if (PR_NewThreadPrivateIndex(&instance->mCurrentWindowIndex, nsnull) !=
PR_SUCCESS) {
NS_ERROR("PR_NewThreadPrivateIndex failed, IndexedDB disabled");
instance->mCurrentWindowIndex = BAD_TLS_INDEX;
return nsnull;
}
nsresult rv;
if (sIsMainProcess) {
nsCOMPtr<nsIFile> dbBaseDirectory;
rv = NS_GetSpecialDirectory(NS_APP_INDEXEDDB_PARENT_DIR, getter_AddRefs(dbBaseDirectory));
if (NS_FAILED(rv)) {
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(dbBaseDirectory));
}
NS_ENSURE_SUCCESS(rv, nsnull);
rv = dbBaseDirectory->Append(NS_LITERAL_STRING("indexedDB"));
NS_ENSURE_SUCCESS(rv, nsnull);
rv = dbBaseDirectory->GetPath(instance->mDatabaseBasePath);
NS_ENSURE_SUCCESS(rv, nsnull);
// Make a lazy thread for any IO we need (like clearing or enumerating the
// contents of indexedDB database directories).
instance->mIOThread = new LazyIdleThread(DEFAULT_THREAD_TIMEOUT_MS,
NS_LITERAL_CSTRING("IndexedDB I/O"),
LazyIdleThread::ManualShutdown);
// We need one quota callback object to hand to SQLite.
instance->mQuotaCallbackSingleton = new QuotaCallback();
// Make a timer here to avoid potential failures later. We don't actually
// initialize the timer until shutdown.
instance->mShutdownTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
NS_ENSURE_TRUE(instance->mShutdownTimer, nsnull);
}
nsCOMPtr<nsIObserverService> obs = GetObserverService();
NS_ENSURE_TRUE(obs, nsnull);
// We need this callback to know when to shut down all our threads.
rv = obs->AddObserver(instance, PROFILE_BEFORE_CHANGE_OBSERVER_ID, false);
NS_ENSURE_SUCCESS(rv, nsnull);
if (NS_FAILED(Preferences::AddIntVarCache(&gIndexedDBQuotaMB,
PREF_INDEXEDDB_QUOTA,
DEFAULT_QUOTA_MB))) {
NS_WARNING("Unable to respond to quota pref changes!");
gIndexedDBQuotaMB = DEFAULT_QUOTA_MB;
}
// The observer service will hold our last reference, don't AddRef here.
gInstance = instance;
}
return instance.forget();
}
// static
IndexedDatabaseManager*
IndexedDatabaseManager::Get()
{
// Does not return an owning reference.
return gInstance;
}
// static
IndexedDatabaseManager*
IndexedDatabaseManager::FactoryCreate()
{
// Returns a raw pointer that carries an owning reference! Lame, but the
// singleton factory macros force this.
return GetOrCreate().get();
}
nsresult
IndexedDatabaseManager::GetDirectoryForOrigin(const nsACString& aASCIIOrigin,
nsIFile** aDirectory) const
{
nsresult rv;
nsCOMPtr<nsIFile> directory =
do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = directory->InitWithPath(GetBaseDirectory());
NS_ENSURE_SUCCESS(rv, rv);
NS_ConvertASCIItoUTF16 originSanitized(aASCIIOrigin);
originSanitized.ReplaceChar(":/", '+');
rv = directory->Append(originSanitized);
NS_ENSURE_SUCCESS(rv, rv);
directory.forget(aDirectory);
return NS_OK;
}
// static
already_AddRefed<nsIAtom>
IndexedDatabaseManager::GetDatabaseId(const nsACString& aOrigin,
const nsAString& aName)
{
nsCString str(aOrigin);
str.Append("*");
str.Append(NS_ConvertUTF16toUTF8(aName));
nsCOMPtr<nsIAtom> atom = do_GetAtom(str);
NS_ENSURE_TRUE(atom, nsnull);
return atom.forget();
}
// static
nsresult
IndexedDatabaseManager::FireWindowOnError(nsPIDOMWindow* aOwner,
nsEventChainPostVisitor& aVisitor)
{
NS_ENSURE_TRUE(aVisitor.mDOMEvent, NS_ERROR_UNEXPECTED);
if (!aOwner) {
return NS_OK;
}
if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
return NS_OK;
}
nsString type;
nsresult rv = aVisitor.mDOMEvent->GetType(type);
NS_ENSURE_SUCCESS(rv, rv);
if (!type.EqualsLiteral(ERROR_EVT_STR)) {
return NS_OK;
}
nsCOMPtr<nsIDOMEventTarget> eventTarget;
rv = aVisitor.mDOMEvent->GetTarget(getter_AddRefs(eventTarget));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIIDBRequest> strongRequest = do_QueryInterface(eventTarget);
IDBRequest* request = static_cast<IDBRequest*>(strongRequest.get());
NS_ENSURE_TRUE(request, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIDOMDOMError> error;
rv = request->GetError(getter_AddRefs(error));
NS_ENSURE_SUCCESS(rv, rv);
nsString errorName;
if (error) {
rv = error->GetName(errorName);
NS_ENSURE_SUCCESS(rv, rv);
}
nsScriptErrorEvent event(true, NS_LOAD_ERROR);
request->FillScriptErrorEvent(&event);
event.errorMsg = errorName.get();
nsCOMPtr<nsIScriptGlobalObject> sgo(do_QueryInterface(aOwner));
NS_ASSERTION(sgo, "How can this happen?!");
nsEventStatus status = nsEventStatus_eIgnore;
if (NS_FAILED(sgo->HandleScriptError(&event, &status))) {
NS_WARNING("Failed to dispatch script error event");
status = nsEventStatus_eIgnore;
}
bool preventDefaultCalled = status == nsEventStatus_eConsumeNoDefault;
if (preventDefaultCalled) {
return NS_OK;
}
// Log an error to the error console.
nsCOMPtr<nsIScriptError> scriptError =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (NS_FAILED(scriptError->InitWithWindowID(event.errorMsg,
event.fileName,
nsnull, event.lineNr,
nsnull, 0,
"IndexedDB",
aOwner->WindowID()))) {
NS_WARNING("Failed to init script error!");
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIConsoleService> consoleService =
do_GetService(NS_CONSOLESERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
return consoleService->LogMessage(scriptError);
}
bool
IndexedDatabaseManager::RegisterDatabase(IDBDatabase* aDatabase)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aDatabase, "Null pointer!");
// Don't allow any new databases to be created after shutdown.
if (IsShuttingDown()) {
return false;
}
// Add this database to its origin array if it exists, create it otherwise.
nsTArray<IDBDatabase*>* array;
if (!mLiveDatabases.Get(aDatabase->Origin(), &array)) {
nsAutoPtr<nsTArray<IDBDatabase*> > newArray(new nsTArray<IDBDatabase*>());
mLiveDatabases.Put(aDatabase->Origin(), newArray);
array = newArray.forget();
}
if (!array->AppendElement(aDatabase)) {
NS_WARNING("Out of memory?");
return false;
}
aDatabase->mRegistered = true;
return true;
}
void
IndexedDatabaseManager::UnregisterDatabase(IDBDatabase* aDatabase)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aDatabase, "Null pointer!");
// Remove this database from its origin array, maybe remove the array if it
// is then empty.
nsTArray<IDBDatabase*>* array;
if (mLiveDatabases.Get(aDatabase->Origin(), &array) &&
array->RemoveElement(aDatabase)) {
if (array->IsEmpty()) {
mLiveDatabases.Remove(aDatabase->Origin());
}
return;
}
NS_ERROR("Didn't know anything about this database!");
}
void
IndexedDatabaseManager::OnUsageCheckComplete(AsyncUsageRunnable* aRunnable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aRunnable, "Null pointer!");
NS_ASSERTION(!aRunnable->mURI, "Should have been cleared!");
NS_ASSERTION(!aRunnable->mCallback, "Should have been cleared!");
if (!mUsageRunnables.RemoveElement(aRunnable)) {
NS_ERROR("Don't know anything about this runnable!");
}
}
nsresult
IndexedDatabaseManager::WaitForOpenAllowed(const nsACString& aOrigin,
nsIAtom* aId,
nsIRunnable* aRunnable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aOrigin.IsEmpty(), "Empty origin!");
NS_ASSERTION(aRunnable, "Null pointer!");
nsAutoPtr<SynchronizedOp> op(new SynchronizedOp(aOrigin, aId));
// See if this runnable needs to wait.
bool delayed = false;
for (PRUint32 index = mSynchronizedOps.Length(); index > 0; index--) {
nsAutoPtr<SynchronizedOp>& existingOp = mSynchronizedOps[index - 1];
if (op->MustWaitFor(*existingOp)) {
existingOp->DelayRunnable(aRunnable);
delayed = true;
break;
}
}
// Otherwise, dispatch it immediately.
if (!delayed) {
nsresult rv = NS_DispatchToCurrentThread(aRunnable);
NS_ENSURE_SUCCESS(rv, rv);
}
// Adding this to the synchronized ops list will block any additional
// ops from proceeding until this one is done.
mSynchronizedOps.AppendElement(op.forget());
return NS_OK;
}
void
IndexedDatabaseManager::AllowNextSynchronizedOp(const nsACString& aOrigin,
nsIAtom* aId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aOrigin.IsEmpty(), "Empty origin!");
PRUint32 count = mSynchronizedOps.Length();
for (PRUint32 index = 0; index < count; index++) {
nsAutoPtr<SynchronizedOp>& op = mSynchronizedOps[index];
if (op->mOrigin.Equals(aOrigin)) {
if (op->mId == aId) {
NS_ASSERTION(op->mDatabases.IsEmpty(), "How did this happen?");
op->DispatchDelayedRunnables();
mSynchronizedOps.RemoveElementAt(index);
return;
}
// If one or the other is for an origin clear, we should have matched
// solely on origin.
NS_ASSERTION(op->mId && aId, "Why didn't we match earlier?");
}
}
NS_NOTREACHED("Why didn't we find a SynchronizedOp?");
}
nsresult
IndexedDatabaseManager::AcquireExclusiveAccess(
const nsACString& aOrigin,
IDBDatabase* aDatabase,
AsyncConnectionHelper* aHelper,
nsIRunnable* aRunnable,
WaitingOnDatabasesCallback aCallback,
void* aClosure)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aDatabase || aHelper, "Need a helper with a database!");
NS_ASSERTION(aDatabase || aRunnable, "Need a runnable without a database!");
// Find the right SynchronizedOp.
SynchronizedOp* op =
FindSynchronizedOp(aOrigin, aDatabase ? aDatabase->Id() : nsnull);
NS_ASSERTION(op, "We didn't find a SynchronizedOp?");
NS_ASSERTION(!op->mHelper, "SynchronizedOp already has a helper?!?");
NS_ASSERTION(!op->mRunnable, "SynchronizedOp already has a runnable?!?");
nsTArray<IDBDatabase*>* array;
mLiveDatabases.Get(aOrigin, &array);
// We need to wait for the databases to go away.
// Hold on to all database objects that represent the same database file
// (except the one that is requesting this version change).
nsTArray<nsRefPtr<IDBDatabase> > liveDatabases;
if (array) {
if (aDatabase) {
// Grab all databases that are not yet closed but whose database id match
// the one we're looking for.
for (PRUint32 index = 0; index < array->Length(); index++) {
IDBDatabase*& database = array->ElementAt(index);
if (!database->IsClosed() &&
database != aDatabase &&
database->Id() == aDatabase->Id()) {
liveDatabases.AppendElement(database);
}
}
}
else {
// We want *all* databases, even those that are closed, if we're going to
// clear the origin.
liveDatabases.AppendElements(*array);
}
}
op->mHelper = aHelper;
op->mRunnable = aRunnable;
if (!liveDatabases.IsEmpty()) {
NS_ASSERTION(op->mDatabases.IsEmpty(),
"How do we already have databases here?");
op->mDatabases.AppendElements(liveDatabases);
// Give our callback the databases so it can decide what to do with them.
aCallback(liveDatabases, aClosure);
NS_ASSERTION(liveDatabases.IsEmpty(),
"Should have done something with the array!");
if (aDatabase) {
// Wait for those databases to close.
return NS_OK;
}
}
// If we're trying to open a database and nothing blocks it, or if we're
// clearing an origin, then go ahead and schedule the op.
nsresult rv = RunSynchronizedOp(aDatabase, op);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// static
bool
IndexedDatabaseManager::IsShuttingDown()
{
return !!gShutdown;
}
// static
bool
IndexedDatabaseManager::IsClosed()
{
return !!gClosed;
}
void
IndexedDatabaseManager::AbortCloseDatabasesForWindow(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null pointer!");
nsAutoTArray<IDBDatabase*, 50> liveDatabases;
mLiveDatabases.EnumerateRead(EnumerateToTArray<IDBDatabase*>,
&liveDatabases);
FileService* service = FileService::Get();
TransactionThreadPool* pool = TransactionThreadPool::Get();
for (PRUint32 index = 0; index < liveDatabases.Length(); index++) {
IDBDatabase*& database = liveDatabases[index];
if (database->GetOwner() == aWindow) {
if (NS_FAILED(database->Close())) {
NS_WARNING("Failed to close database for dying window!");
}
if (service) {
service->AbortLockedFilesForStorage(database);
}
if (pool) {
pool->AbortTransactionsForDatabase(database);
}
}
}
}
bool
IndexedDatabaseManager::HasOpenTransactions(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null pointer!");
nsAutoTArray<IDBDatabase*, 50> liveDatabases;
mLiveDatabases.EnumerateRead(EnumerateToTArray<IDBDatabase*>,
&liveDatabases);
FileService* service = FileService::Get();
TransactionThreadPool* pool = TransactionThreadPool::Get();
if (!service && !pool) {
return false;
}
for (PRUint32 index = 0; index < liveDatabases.Length(); index++) {
IDBDatabase*& database = liveDatabases[index];
if (database->GetOwner() == aWindow &&
((service && service->HasLockedFilesForStorage(database)) ||
(pool && pool->HasTransactionsForDatabase(database)))) {
return true;
}
}
return false;
}
void
IndexedDatabaseManager::OnDatabaseClosed(IDBDatabase* aDatabase)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aDatabase, "Null pointer!");
// Check through the list of SynchronizedOps to see if any are waiting for
// this database to close before proceeding.
SynchronizedOp* op = FindSynchronizedOp(aDatabase->Origin(), aDatabase->Id());
if (op) {
// This database is in the scope of this SynchronizedOp. Remove it
// from the list if necessary.
if (op->mDatabases.RemoveElement(aDatabase)) {
// Now set up the helper if there are no more live databases.
NS_ASSERTION(op->mHelper || op->mRunnable,
"How did we get rid of the helper/runnable before "
"removing the last database?");
if (op->mDatabases.IsEmpty()) {
// At this point, all databases are closed, so no new transactions
// can be started. There may, however, still be outstanding
// transactions that have not completed. We need to wait for those
// before we dispatch the helper.
if (NS_FAILED(RunSynchronizedOp(aDatabase, op))) {
NS_WARNING("Failed to run synchronized op!");
}
}
}
}
}
void
IndexedDatabaseManager::SetCurrentWindowInternal(nsPIDOMWindow* aWindow)
{
if (aWindow) {
#ifdef DEBUG
NS_ASSERTION(!PR_GetThreadPrivate(mCurrentWindowIndex),
"Somebody forgot to clear the current window!");
#endif
PR_SetThreadPrivate(mCurrentWindowIndex, aWindow);
}
else {
// We cannot assert PR_GetThreadPrivate(mCurrentWindowIndex) here
// because we cannot distinguish between the thread private became
// null and that it was set to null on the first place,
// because we didn't have a window.
PR_SetThreadPrivate(mCurrentWindowIndex, nsnull);
}
}
// static
PRUint32
IndexedDatabaseManager::GetIndexedDBQuotaMB()
{
return PRUint32(NS_MAX(gIndexedDBQuotaMB, 0));
}
nsresult
IndexedDatabaseManager::EnsureOriginIsInitialized(const nsACString& aOrigin,
nsIFile** aDirectory)
{
#ifdef DEBUG
{
bool correctThread;
NS_ASSERTION(NS_SUCCEEDED(mIOThread->IsOnCurrentThread(&correctThread)) &&
correctThread,
"Running on the wrong thread!");
}
#endif
nsCOMPtr<nsIFile> directory;
nsresult rv = GetDirectoryForOrigin(aOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = directory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
bool isDirectory;
rv = directory->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(isDirectory, NS_ERROR_UNEXPECTED);
}
else {
rv = directory->Create(nsIFile::DIRECTORY_TYPE, 0755);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mFileManagers.Get(aOrigin)) {
NS_ADDREF(*aDirectory = directory);
return NS_OK;
}
// First figure out the filename pattern we'll use.
nsCOMPtr<nsIFile> patternFile;
rv = directory->Clone(getter_AddRefs(patternFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = patternFile->Append(NS_LITERAL_STRING("*"));
NS_ENSURE_SUCCESS(rv, rv);
nsCString pattern;
rv = patternFile->GetNativePath(pattern);
NS_ENSURE_SUCCESS(rv, rv);
// Now tell SQLite to start tracking this pattern.
nsCOMPtr<mozIStorageServiceQuotaManagement> ss =
do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
NS_ENSURE_TRUE(ss, NS_ERROR_FAILURE);
rv = ss->SetQuotaForFilenamePattern(pattern,
GetIndexedDBQuotaMB() * 1024 * 1024,
mQuotaCallbackSingleton, nsnull);
NS_ENSURE_SUCCESS(rv, rv);
// We need to see if there are any files in the directory already. If they
// are database files then we need to create file managers for them and also
// tell SQLite about all of them.
nsAutoTArray<nsString, 20> subdirsToProcess;
nsAutoTArray<nsCOMPtr<nsIFile> , 20> unknownFiles;
nsAutoPtr<nsTArray<nsRefPtr<FileManager> > > fileManagers(
new nsTArray<nsRefPtr<FileManager> >());
nsTHashtable<nsStringHashKey> validSubdirs;
validSubdirs.Init(20);
nsCOMPtr<nsISimpleEnumerator> entries;
rv = directory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) && hasMore) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ENSURE_TRUE(file, NS_NOINTERFACE);
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (StringEndsWith(leafName, NS_LITERAL_STRING(".sqlite-journal"))) {
continue;
}
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (isDirectory) {
if (!validSubdirs.GetEntry(leafName)) {
subdirsToProcess.AppendElement(leafName);
}
continue;
}
nsString dbBaseFilename;
if (!GetBaseFilename(leafName, dbBaseFilename)) {
unknownFiles.AppendElement(file);
continue;
}
nsCOMPtr<nsIFile> fileManagerDirectory;
rv = directory->Clone(getter_AddRefs(fileManagerDirectory));
NS_ENSURE_SUCCESS(rv, rv);
rv = fileManagerDirectory->Append(dbBaseFilename);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<mozIStorageConnection> connection;
rv = OpenDatabaseHelper::CreateDatabaseConnection(
NullString(), file, fileManagerDirectory, getter_AddRefs(connection));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<mozIStorageStatement> stmt;
rv = connection->CreateStatement(NS_LITERAL_CSTRING(
"SELECT name "
"FROM database"
), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
if (!hasResult) {
NS_ERROR("Database has no name!");
return NS_ERROR_UNEXPECTED;
}
nsString databaseName;
rv = stmt->GetString(0, databaseName);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<FileManager> fileManager = new FileManager(aOrigin, databaseName);
rv = fileManager->Init(fileManagerDirectory, connection);
NS_ENSURE_SUCCESS(rv, rv);
fileManagers->AppendElement(fileManager);
rv = ss->UpdateQuotaInformationForFile(file);
NS_ENSURE_SUCCESS(rv, rv);
validSubdirs.PutEntry(dbBaseFilename);
}
NS_ENSURE_SUCCESS(rv, rv);
for (PRUint32 i = 0; i < subdirsToProcess.Length(); i++) {
const nsString& subdir = subdirsToProcess[i];
if (!validSubdirs.GetEntry(subdir)) {
NS_WARNING("Unknown subdirectory found!");
return NS_ERROR_UNEXPECTED;
}
}
for (PRUint32 i = 0; i < unknownFiles.Length(); i++) {
nsCOMPtr<nsIFile>& unknownFile = unknownFiles[i];
// Some temporary SQLite files could disappear, so we have to check if the
// unknown file still exists.
bool exists;
rv = unknownFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
nsString leafName;
unknownFile->GetLeafName(leafName);
// The journal file may exists even after db has been correctly opened.
if (!StringEndsWith(leafName, NS_LITERAL_STRING(".sqlite-journal"))) {
NS_WARNING("Unknown file found!");
return NS_ERROR_UNEXPECTED;
}
}
}
mFileManagers.Put(aOrigin, fileManagers);
fileManagers.forget();
NS_ADDREF(*aDirectory = directory);
return NS_OK;
}
bool
IndexedDatabaseManager::QuotaIsLiftedInternal()
{
nsPIDOMWindow* window = nsnull;
nsRefPtr<CheckQuotaHelper> helper = nsnull;
bool createdHelper = false;
window =
static_cast<nsPIDOMWindow*>(PR_GetThreadPrivate(mCurrentWindowIndex));
// Once IDB is supported outside of Windows this should become an early
// return true.
NS_ASSERTION(window, "Why don't we have a Window here?");
// Hold the lock from here on.
MutexAutoLock autoLock(mQuotaHelperMutex);
mQuotaHelperHash.Get(window, getter_AddRefs(helper));
if (!helper) {
helper = new CheckQuotaHelper(window, mQuotaHelperMutex);
createdHelper = true;
mQuotaHelperHash.Put(window, helper);
// Unlock while calling out to XPCOM
{
MutexAutoUnlock autoUnlock(mQuotaHelperMutex);
nsresult rv = NS_DispatchToMainThread(helper);
NS_ENSURE_SUCCESS(rv, false);
}
// Relocked. If any other threads hit the quota limit on the same Window,
// they are using the helper we created here and are now blocking in
// PromptAndReturnQuotaDisabled.
}
bool result = helper->PromptAndReturnQuotaIsDisabled();
// If this thread created the helper and added it to the hash, this thread
// must remove it.
if (createdHelper) {
mQuotaHelperHash.Remove(window);
}
return result;
}
void
IndexedDatabaseManager::CancelPromptsForWindowInternal(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<CheckQuotaHelper> helper;
MutexAutoLock autoLock(mQuotaHelperMutex);
mQuotaHelperHash.Get(aWindow, getter_AddRefs(helper));
if (helper) {
helper->Cancel();
}
}
// static
nsresult
IndexedDatabaseManager::GetASCIIOriginFromWindow(nsPIDOMWindow* aWindow,
nsCString& aASCIIOrigin)
{
NS_ASSERTION(NS_IsMainThread(),
"We're about to touch a window off the main thread!");
if (!aWindow) {
aASCIIOrigin.AssignLiteral("chrome");
NS_ASSERTION(nsContentUtils::IsCallerChrome(),
"Null window but not chrome!");
return NS_OK;
}
nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(aWindow);
NS_ENSURE_TRUE(sop, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsCOMPtr<nsIPrincipal> principal = sop->GetPrincipal();
NS_ENSURE_TRUE(principal, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (nsContentUtils::IsSystemPrincipal(principal)) {
aASCIIOrigin.AssignLiteral("chrome");
}
else {
nsresult rv = nsContentUtils::GetASCIIOrigin(principal, aASCIIOrigin);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (aASCIIOrigin.EqualsLiteral("null")) {
NS_WARNING("IndexedDB databases not allowed for this principal!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
return NS_OK;
}
#ifdef DEBUG
//static
bool
IndexedDatabaseManager::IsMainProcess()
{
NS_ASSERTION(gInstance,
"IsMainProcess() called before indexedDB has been initialized!");
NS_ASSERTION((XRE_GetProcessType() == GeckoProcessType_Default) ==
sIsMainProcess, "XRE_GetProcessType changed its tune!");
return sIsMainProcess;
}
#endif
already_AddRefed<FileManager>
IndexedDatabaseManager::GetOrCreateFileManager(const nsACString& aOrigin,
const nsAString& aDatabaseName)
{
nsTArray<nsRefPtr<FileManager> >* array;
if (!mFileManagers.Get(aOrigin, &array)) {
nsAutoPtr<nsTArray<nsRefPtr<FileManager> > > newArray(
new nsTArray<nsRefPtr<FileManager> >());
mFileManagers.Put(aOrigin, newArray);
array = newArray.forget();
}
nsRefPtr<FileManager> fileManager;
for (PRUint32 i = 0; i < array->Length(); i++) {
nsRefPtr<FileManager> fm = array->ElementAt(i);
if (fm->DatabaseName().Equals(aDatabaseName)) {
fileManager = fm.forget();
break;
}
}
if (!fileManager) {
fileManager = new FileManager(aOrigin, aDatabaseName);
array->AppendElement(fileManager);
}
return fileManager.forget();
}
already_AddRefed<FileManager>
IndexedDatabaseManager::GetFileManager(const nsACString& aOrigin,
const nsAString& aDatabaseName)
{
nsTArray<nsRefPtr<FileManager> >* array;
if (!mFileManagers.Get(aOrigin, &array)) {
return nsnull;
}
for (PRUint32 i = 0; i < array->Length(); i++) {
nsRefPtr<FileManager>& fileManager = array->ElementAt(i);
if (fileManager->DatabaseName().Equals(aDatabaseName)) {
nsRefPtr<FileManager> result = fileManager;
return result.forget();
}
}
return nsnull;
}
void
IndexedDatabaseManager::InvalidateFileManagersForOrigin(
const nsACString& aOrigin)
{
nsTArray<nsRefPtr<FileManager> >* array;
if (mFileManagers.Get(aOrigin, &array)) {
for (PRUint32 i = 0; i < array->Length(); i++) {
nsRefPtr<FileManager> fileManager = array->ElementAt(i);
fileManager->Invalidate();
}
mFileManagers.Remove(aOrigin);
}
}
void
IndexedDatabaseManager::InvalidateFileManager(const nsACString& aOrigin,
const nsAString& aDatabaseName)
{
nsTArray<nsRefPtr<FileManager> >* array;
if (!mFileManagers.Get(aOrigin, &array)) {
return;
}
for (PRUint32 i = 0; i < array->Length(); i++) {
nsRefPtr<FileManager> fileManager = array->ElementAt(i);
if (fileManager->DatabaseName().Equals(aDatabaseName)) {
fileManager->Invalidate();
array->RemoveElementAt(i);
if (array->IsEmpty()) {
mFileManagers.Remove(aOrigin);
}
break;
}
}
}
nsresult
IndexedDatabaseManager::AsyncDeleteFile(FileManager* aFileManager,
PRInt64 aFileId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aFileManager);
// See if we're currently clearing the databases for this origin. If so then
// we pretend that we've already deleted everything.
if (IsClearOriginPending(aFileManager->Origin())) {
return NS_OK;
}
nsCOMPtr<nsIFile> directory = aFileManager->GetDirectory();
NS_ENSURE_TRUE(directory, NS_ERROR_FAILURE);
nsCOMPtr<nsIFile> file = aFileManager->GetFileForId(directory, aFileId);
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
nsString filePath;
nsresult rv = file->GetPath(filePath);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<AsyncDeleteFileRunnable> runnable =
new AsyncDeleteFileRunnable(filePath);
rv = mIOThread->Dispatch(runnable, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// static
nsresult
IndexedDatabaseManager::RunSynchronizedOp(IDBDatabase* aDatabase,
SynchronizedOp* aOp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aOp, "Null pointer!");
NS_ASSERTION(!aDatabase || aOp->mHelper, "No helper on this op!");
NS_ASSERTION(aDatabase || aOp->mRunnable, "No runnable on this op!");
NS_ASSERTION(!aDatabase || aOp->mDatabases.IsEmpty(),
"This op isn't ready to run!");
FileService* service = FileService::Get();
TransactionThreadPool* pool = TransactionThreadPool::Get();
nsTArray<nsRefPtr<IDBDatabase> > databases;
if (aDatabase) {
if (service || pool) {
databases.AppendElement(aDatabase);
}
}
else {
aOp->mDatabases.SwapElements(databases);
}
PRUint32 waitCount = service && pool && !databases.IsEmpty() ? 2 : 1;
nsRefPtr<WaitForTransactionsToFinishRunnable> runnable =
new WaitForTransactionsToFinishRunnable(aOp, waitCount);
// There's no point in delaying if we don't yet have a transaction thread pool
// or a file service. Also, if we're not waiting on any databases then we can
// also run immediately.
if (!(service || pool) || databases.IsEmpty()) {
nsresult rv = runnable->Run();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// Ask each service to call us back when they're done with this database.
if (service) {
// Have to copy here in case the pool needs a list too.
nsTArray<nsCOMPtr<nsIFileStorage> > array;
array.AppendElements(databases);
if (!service->WaitForAllStoragesToComplete(array, runnable)) {
NS_WARNING("Failed to wait for storages to complete!");
return NS_ERROR_FAILURE;
}
}
if (pool && !pool->WaitForAllDatabasesToComplete(databases, runnable)) {
NS_WARNING("Failed to wait for databases to complete!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS2(IndexedDatabaseManager, nsIIndexedDatabaseManager,
nsIObserver)
NS_IMETHODIMP
IndexedDatabaseManager::GetUsageForURI(
nsIURI* aURI,
nsIIndexedDatabaseUsageCallback* aCallback)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aURI);
NS_ENSURE_ARG_POINTER(aCallback);
// Figure out which origin we're dealing with.
nsCString origin;
nsresult rv = nsContentUtils::GetASCIIOrigin(aURI, origin);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<AsyncUsageRunnable> runnable =
new AsyncUsageRunnable(aURI, origin, aCallback);
nsRefPtr<AsyncUsageRunnable>* newRunnable =
mUsageRunnables.AppendElement(runnable);
NS_ENSURE_TRUE(newRunnable, NS_ERROR_OUT_OF_MEMORY);
// Non-standard URIs can't create databases anyway so fire the callback
// immediately.
if (origin.EqualsLiteral("null")) {
return runnable->TakeShortcut();
}
// Otherwise put the computation runnable in the queue.
rv = WaitForOpenAllowed(origin, nsnull, runnable);
NS_ENSURE_SUCCESS(rv, rv);
runnable->AdvanceState();
return NS_OK;
}
NS_IMETHODIMP
IndexedDatabaseManager::CancelGetUsageForURI(
nsIURI* aURI,
nsIIndexedDatabaseUsageCallback* aCallback)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aURI);
NS_ENSURE_ARG_POINTER(aCallback);
// See if one of our pending callbacks matches both the URI and the callback
// given. Cancel an remove it if so.
for (PRUint32 index = 0; index < mUsageRunnables.Length(); index++) {
nsRefPtr<AsyncUsageRunnable>& runnable = mUsageRunnables[index];
bool equals;
nsresult rv = runnable->mURI->Equals(aURI, &equals);
NS_ENSURE_SUCCESS(rv, rv);
if (equals && SameCOMIdentity(aCallback, runnable->mCallback)) {
runnable->Cancel();
break;
}
}
return NS_OK;
}
NS_IMETHODIMP
IndexedDatabaseManager::ClearDatabasesForURI(nsIURI* aURI)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aURI);
// Figure out which origin we're dealing with.
nsCString origin;
nsresult rv = nsContentUtils::GetASCIIOrigin(aURI, origin);
NS_ENSURE_SUCCESS(rv, rv);
// Non-standard URIs can't create databases anyway, so return immediately.
if (origin.EqualsLiteral("null")) {
return NS_OK;
}
// If there is a pending or running clear operation for this origin, return
// immediately.
if (IsClearOriginPending(origin)) {
return NS_OK;
}
// Queue up the origin clear runnable.
nsRefPtr<OriginClearRunnable> runnable = new OriginClearRunnable(origin);
rv = WaitForOpenAllowed(origin, nsnull, runnable);
NS_ENSURE_SUCCESS(rv, rv);
runnable->AdvanceState();
// Give the runnable some help by invalidating any databases in the way. We
// need to grab references to any live databases here to prevent them from
// dying while we invalidate them.
nsTArray<nsRefPtr<IDBDatabase> > liveDatabases;
nsTArray<IDBDatabase*>* array;
if (mLiveDatabases.Get(origin, &array)) {
liveDatabases.AppendElements(*array);
}
for (PRUint32 index = 0; index < liveDatabases.Length(); index++) {
liveDatabases[index]->Invalidate();
}
DatabaseInfo::RemoveAllForOrigin(origin);
// After everything has been invalidated the helper should be dispatched to
// the end of the event queue.
return NS_OK;
}
NS_IMETHODIMP
IndexedDatabaseManager::Observe(nsISupports* aSubject,
const char* aTopic,
const PRUnichar* aData)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!strcmp(aTopic, PROFILE_BEFORE_CHANGE_OBSERVER_ID)) {
// Setting this flag prevents the service from being recreated and prevents
// further databases from being created.
if (PR_ATOMIC_SET(&gShutdown, 1)) {
NS_ERROR("Shutdown more than once?!");
}
if (sIsMainProcess) {
FileService* service = FileService::Get();
if (service) {
// This should only wait for IDB databases (file storages) to complete.
// Other file storages may still have running locked files.
// If the necko service (thread pool) gets the shutdown notification
// first then the sync loop won't be processed at all, otherwise it will
// lock the main thread until all IDB file storages are finished.
nsTArray<nsCOMPtr<nsIFileStorage> >
liveDatabases(mLiveDatabases.Count());
mLiveDatabases.EnumerateRead(
EnumerateToTArray<nsCOMPtr<nsIFileStorage> >,
&liveDatabases);
if (!liveDatabases.IsEmpty()) {
nsRefPtr<WaitForLockedFilesToFinishRunnable> runnable =
new WaitForLockedFilesToFinishRunnable();
if (!service->WaitForAllStoragesToComplete(liveDatabases,
runnable)) {
NS_WARNING("Failed to wait for databases to complete!");
}
nsIThread* thread = NS_GetCurrentThread();
while (runnable->IsBusy()) {
if (!NS_ProcessNextEvent(thread)) {
NS_ERROR("Failed to process next event!");
break;
}
}
}
}
// Make sure to join with our IO thread.
if (NS_FAILED(mIOThread->Shutdown())) {
NS_WARNING("Failed to shutdown IO thread!");
}
// Kick off the shutdown timer.
if (NS_FAILED(mShutdownTimer->Init(this, DEFAULT_SHUTDOWN_TIMER_MS,
nsITimer::TYPE_ONE_SHOT))) {
NS_WARNING("Failed to initialize shutdown timer!");
}
// This will spin the event loop while we wait on all the database threads
// to close. Our timer may fire during that loop.
TransactionThreadPool::Shutdown();
// Cancel the timer regardless of whether it actually fired.
if (NS_FAILED(mShutdownTimer->Cancel())) {
NS_WARNING("Failed to cancel shutdown timer!");
}
}
mFileManagers.EnumerateRead(InvalidateAllFileManagers, nsnull);
if (PR_ATOMIC_SET(&gClosed, 1)) {
NS_ERROR("Close more than once?!");
}
return NS_OK;
}
if (!strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC)) {
NS_ASSERTION(sIsMainProcess, "Should only happen in the main process!");
NS_WARNING("Some database operations are taking longer than expected "
"during shutdown and will be aborted!");
// Grab all live databases, for all origins.
nsAutoTArray<IDBDatabase*, 50> liveDatabases;
mLiveDatabases.EnumerateRead(EnumerateToTArray<IDBDatabase*>,
&liveDatabases);
// Invalidate them all.
if (!liveDatabases.IsEmpty()) {
PRUint32 count = liveDatabases.Length();
for (PRUint32 index = 0; index < count; index++) {
liveDatabases[index]->Invalidate();
}
}
return NS_OK;
}
NS_NOTREACHED("Unknown topic!");
return NS_ERROR_UNEXPECTED;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(IndexedDatabaseManager::OriginClearRunnable,
nsIRunnable)
// static
void
IndexedDatabaseManager::
OriginClearRunnable::InvalidateOpenedDatabases(
nsTArray<nsRefPtr<IDBDatabase> >& aDatabases,
void* aClosure)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
OriginClearRunnable* self = static_cast<OriginClearRunnable*>(aClosure);
nsTArray<nsRefPtr<IDBDatabase> > databases;
databases.SwapElements(aDatabases);
for (PRUint32 index = 0; index < databases.Length(); index++) {
databases[index]->Invalidate();
}
DatabaseInfo::RemoveAllForOrigin(self->mOrigin);
}
NS_IMETHODIMP
IndexedDatabaseManager::OriginClearRunnable::Run()
{
IndexedDatabaseManager* mgr = IndexedDatabaseManager::Get();
NS_ASSERTION(mgr, "This should never fail!");
switch (mCallbackState) {
case Pending: {
NS_NOTREACHED("Should never get here without being dispatched!");
return NS_ERROR_UNEXPECTED;
}
case OpenAllowed: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
AdvanceState();
// Now we have to wait until the thread pool is done with all of the
// databases we care about.
nsresult rv =
mgr->AcquireExclusiveAccess(mOrigin, this, InvalidateOpenedDatabases,
this);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
case IO: {
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
AdvanceState();
// Remove the directory that contains all our databases.
nsCOMPtr<nsIFile> directory;
nsresult rv =
mgr->GetDirectoryForOrigin(mOrigin, getter_AddRefs(directory));
NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Failed to get directory to remove!");
if (NS_SUCCEEDED(rv)) {
bool exists;
rv = directory->Exists(&exists);
NS_WARN_IF_FALSE(NS_SUCCEEDED(rv),
"Failed to check that the directory exists!");
if (NS_SUCCEEDED(rv) && exists && NS_FAILED(directory->Remove(true))) {
// This should never fail if we've closed all database connections
// correctly...
NS_ERROR("Failed to remove directory!");
}
}
// Now dispatch back to the main thread.
if (NS_FAILED(NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL))) {
NS_WARNING("Failed to dispatch to main thread!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
case Complete: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mgr->InvalidateFileManagersForOrigin(mOrigin);
// Tell the IndexedDatabaseManager that we're done.
mgr->AllowNextSynchronizedOp(mOrigin, nsnull);
return NS_OK;
}
default:
NS_ERROR("Unknown state value!");
return NS_ERROR_UNEXPECTED;
}
NS_NOTREACHED("Should never get here!");
return NS_ERROR_UNEXPECTED;
}
IndexedDatabaseManager::AsyncUsageRunnable::AsyncUsageRunnable(
nsIURI* aURI,
const nsACString& aOrigin,
nsIIndexedDatabaseUsageCallback* aCallback)
: mURI(aURI),
mOrigin(aOrigin),
mCallback(aCallback),
mUsage(0),
mFileUsage(0),
mCanceled(0),
mCallbackState(Pending)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aURI, "Null pointer!");
NS_ASSERTION(!aOrigin.IsEmpty(), "Empty origin!");
NS_ASSERTION(aCallback, "Null pointer!");
}
void
IndexedDatabaseManager::AsyncUsageRunnable::Cancel()
{
if (PR_ATOMIC_SET(&mCanceled, 1)) {
NS_ERROR("Canceled more than once?!");
}
}
inline void
IncrementUsage(PRUint64* aUsage, PRUint64 aDelta)
{
// Watch for overflow!
if ((LL_MAXINT - *aUsage) <= aDelta) {
NS_WARNING("Database sizes exceed max we can report!");
*aUsage = LL_MAXINT;
}
else {
*aUsage += aDelta;
}
}
nsresult
IndexedDatabaseManager::AsyncUsageRunnable::TakeShortcut()
{
NS_ASSERTION(mCallbackState == Pending, "Huh?");
nsresult rv = NS_DispatchToCurrentThread(this);
NS_ENSURE_SUCCESS(rv, rv);
mCallbackState = Shortcut;
return NS_OK;
}
nsresult
IndexedDatabaseManager::AsyncUsageRunnable::RunInternal()
{
IndexedDatabaseManager* mgr = IndexedDatabaseManager::Get();
NS_ASSERTION(mgr, "This should never fail!");
if (mCanceled) {
return NS_OK;
}
switch (mCallbackState) {
case Pending: {
NS_NOTREACHED("Should never get here without being dispatched!");
return NS_ERROR_UNEXPECTED;
}
case OpenAllowed: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
AdvanceState();
if (NS_FAILED(mgr->IOThread()->Dispatch(this, NS_DISPATCH_NORMAL))) {
NS_WARNING("Failed to dispatch to the IO thread!");
}
return NS_OK;
}
case IO: {
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
AdvanceState();
// Get the directory that contains all the database files we care about.
nsCOMPtr<nsIFile> directory;
nsresult rv = mgr->GetDirectoryForOrigin(mOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = directory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
// If the directory exists then enumerate all the files inside, adding up the
// sizes to get the final usage statistic.
if (exists && !mCanceled) {
rv = GetUsageForDirectory(directory, &mUsage);
NS_ENSURE_SUCCESS(rv, rv);
}
// Run dispatches us back to the main thread.
return NS_OK;
}
case Complete: // Fall through
case Shortcut: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
// Call the callback unless we were canceled.
if (!mCanceled) {
PRUint64 usage = mUsage;
IncrementUsage(&usage, mFileUsage);
mCallback->OnUsageResult(mURI, usage, mFileUsage);
}
// Clean up.
mURI = nsnull;
mCallback = nsnull;
// And tell the IndexedDatabaseManager that we're done.
mgr->OnUsageCheckComplete(this);
if (mCallbackState == Complete) {
mgr->AllowNextSynchronizedOp(mOrigin, nsnull);
}
return NS_OK;
}
default:
NS_ERROR("Unknown state value!");
return NS_ERROR_UNEXPECTED;
}
NS_NOTREACHED("Should never get here!");
return NS_ERROR_UNEXPECTED;
}
nsresult
IndexedDatabaseManager::AsyncUsageRunnable::GetUsageForDirectory(
nsIFile* aDirectory,
PRUint64* aUsage)
{
NS_ASSERTION(aDirectory, "Null pointer!");
NS_ASSERTION(aUsage, "Null pointer!");
nsCOMPtr<nsISimpleEnumerator> entries;
nsresult rv = aDirectory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
if (!entries) {
return NS_OK;
}
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) &&
hasMore && !mCanceled) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file(do_QueryInterface(entry));
NS_ASSERTION(file, "Don't know what this is!");
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (isDirectory) {
if (aUsage == &mFileUsage) {
NS_WARNING("Unknown directory found!");
}
else {
rv = GetUsageForDirectory(file, &mFileUsage);
NS_ENSURE_SUCCESS(rv, rv);
}
continue;
}
PRInt64 fileSize;
rv = file->GetFileSize(&fileSize);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(fileSize >= 0, "Negative size?!");
IncrementUsage(aUsage, PRUint64(fileSize));
}
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(IndexedDatabaseManager::AsyncUsageRunnable,
nsIRunnable)
NS_IMETHODIMP
IndexedDatabaseManager::AsyncUsageRunnable::Run()
{
nsresult rv = RunInternal();
if (!NS_IsMainThread()) {
if (NS_FAILED(rv)) {
mUsage = 0;
}
if (NS_FAILED(NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL))) {
NS_WARNING("Failed to dispatch to main thread!");
}
}
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(
IndexedDatabaseManager::WaitForTransactionsToFinishRunnable,
nsIRunnable)
NS_IMETHODIMP
IndexedDatabaseManager::WaitForTransactionsToFinishRunnable::Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mOp, "Null op!");
NS_ASSERTION(mOp->mHelper || mOp->mRunnable, "Nothing to run!");
NS_ASSERTION(mCountdown, "Wrong countdown!");
if (--mCountdown) {
return NS_OK;
}
// Don't hold the callback alive longer than necessary.
nsRefPtr<AsyncConnectionHelper> helper;
helper.swap(mOp->mHelper);
nsCOMPtr<nsIRunnable> runnable;
runnable.swap(mOp->mRunnable);
mOp = nsnull;
nsresult rv;
if (helper && helper->HasTransaction()) {
// If the helper has a transaction, dispatch it to the transaction
// threadpool.
rv = helper->DispatchToTransactionPool();
NS_ENSURE_SUCCESS(rv, rv);
}
else {
// Otherwise, dispatch it to the IO thread.
IndexedDatabaseManager* manager = IndexedDatabaseManager::Get();
NS_ASSERTION(manager, "We should definitely have a manager here");
nsIEventTarget* target = manager->IOThread();
rv = helper ?
helper->Dispatch(target) :
target->Dispatch(runnable, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
}
// The helper or runnable is responsible for calling
// IndexedDatabaseManager::AllowNextSynchronizedOp.
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(
IndexedDatabaseManager::WaitForLockedFilesToFinishRunnable,
nsIRunnable)
NS_IMETHODIMP
IndexedDatabaseManager::WaitForLockedFilesToFinishRunnable::Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mBusy = false;
return NS_OK;
}
IndexedDatabaseManager::
SynchronizedOp::SynchronizedOp(const nsACString& aOrigin,
nsIAtom* aId)
: mOrigin(aOrigin), mId(aId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
MOZ_COUNT_CTOR(IndexedDatabaseManager::SynchronizedOp);
}
IndexedDatabaseManager::SynchronizedOp::~SynchronizedOp()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
MOZ_COUNT_DTOR(IndexedDatabaseManager::SynchronizedOp);
}
bool
IndexedDatabaseManager::SynchronizedOp::MustWaitFor(const SynchronizedOp& aRhs)
const
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
// If the origins don't match, the second can proceed.
if (!aRhs.mOrigin.Equals(mOrigin)) {
return false;
}
// If the origins and the ids match, the second must wait.
if (aRhs.mId == mId) {
return true;
}
// Waiting is required if either one corresponds to an origin clearing
// (a null Id).
if (!aRhs.mId || !mId) {
return true;
}
// Otherwise, things for the same origin but different databases can proceed
// independently.
return false;
}
void
IndexedDatabaseManager::SynchronizedOp::DelayRunnable(nsIRunnable* aRunnable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mDelayedRunnables.IsEmpty() || !mId,
"Only ClearOrigin operations can delay multiple runnables!");
mDelayedRunnables.AppendElement(aRunnable);
}
void
IndexedDatabaseManager::SynchronizedOp::DispatchDelayedRunnables()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!mHelper, "Any helper should be gone by now!");
PRUint32 count = mDelayedRunnables.Length();
for (PRUint32 index = 0; index < count; index++) {
NS_DispatchToCurrentThread(mDelayedRunnables[index]);
}
mDelayedRunnables.Clear();
}
NS_IMETHODIMP
IndexedDatabaseManager::InitWindowless(const jsval& aObj, JSContext* aCx)
{
NS_ENSURE_TRUE(nsContentUtils::IsCallerChrome(), NS_ERROR_NOT_AVAILABLE);
NS_ENSURE_ARG(!JSVAL_IS_PRIMITIVE(aObj));
// Instantiating this class will register exception providers so even
// in xpcshell we will get typed (dom) exceptions, instead of general
// exceptions.
nsCOMPtr<nsIDOMScriptObjectFactory> sof(do_GetService(kDOMSOF_CID));
JSObject* obj = JSVAL_TO_OBJECT(aObj);
JSObject* global = JS_GetGlobalForObject(aCx, obj);
nsRefPtr<IDBFactory> factory;
nsresult rv = IDBFactory::Create(aCx, global, getter_AddRefs(factory));
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_ASSERTION(factory, "This should never fail for chrome!");
jsval indexedDBVal;
rv = nsContentUtils::WrapNative(aCx, obj, factory, &indexedDBVal);
NS_ENSURE_SUCCESS(rv, rv);
if (!JS_DefineProperty(aCx, obj, "indexedDB", indexedDBVal, nsnull,
nsnull, JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
JSObject* keyrangeObj = JS_NewObject(aCx, nsnull, nsnull, nsnull);
NS_ENSURE_TRUE(keyrangeObj, NS_ERROR_OUT_OF_MEMORY);
if (!IDBKeyRange::DefineConstructors(aCx, keyrangeObj)) {
return NS_ERROR_FAILURE;
}
if (!JS_DefineProperty(aCx, obj, "IDBKeyRange", OBJECT_TO_JSVAL(keyrangeObj),
nsnull, nsnull, JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(IndexedDatabaseManager::AsyncDeleteFileRunnable,
nsIRunnable)
NS_IMETHODIMP
IndexedDatabaseManager::AsyncDeleteFileRunnable::Run()
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
int rc = sqlite3_quota_remove(NS_ConvertUTF16toUTF8(mFilePath).get());
if (rc != SQLITE_OK) {
NS_WARNING("Failed to delete stored file!");
return NS_ERROR_FAILURE;
}
// sqlite3_quota_remove won't actually remove anything if we're not tracking
// the quota here. Manually remove the file if it exists.
nsresult rv;
nsCOMPtr<nsIFile> file =
do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = file->InitWithPath(mFilePath);
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = file->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
rv = file->Remove(false);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
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