mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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146 lines
3.8 KiB
C++
146 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_indexeddb_transactionthreadpool_h__
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#define mozilla_dom_indexeddb_transactionthreadpool_h__
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// Only meant to be included in IndexedDB source files, not exported.
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#include "IndexedDatabase.h"
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#include "nsIObserver.h"
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#include "nsIRunnable.h"
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#include "mozilla/Monitor.h"
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#include "nsClassHashtable.h"
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#include "nsHashKeys.h"
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#include "nsRefPtrHashtable.h"
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#include "IDBTransaction.h"
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class nsIThreadPool;
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BEGIN_INDEXEDDB_NAMESPACE
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class FinishTransactionRunnable;
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class QueuedDispatchInfo;
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class TransactionThreadPool
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{
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friend class nsAutoPtr<TransactionThreadPool>;
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friend class FinishTransactionRunnable;
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public:
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// returns a non-owning ref!
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static TransactionThreadPool* GetOrCreate();
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// returns a non-owning ref!
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static TransactionThreadPool* Get();
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static void Shutdown();
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nsresult Dispatch(IDBTransaction* aTransaction,
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nsIRunnable* aRunnable,
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bool aFinish,
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nsIRunnable* aFinishRunnable);
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bool WaitForAllDatabasesToComplete(nsTArray<IDBDatabase*>& aDatabases,
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nsIRunnable* aCallback);
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// Abort all transactions, unless they are already in the process of being
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// committed, for aDatabase.
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void AbortTransactionsForDatabase(IDBDatabase* aDatabase);
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// Returns true if there are running or pending transactions for aDatabase.
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bool HasTransactionsForDatabase(IDBDatabase* aDatabase);
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protected:
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class TransactionQueue MOZ_FINAL : public nsIRunnable
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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inline TransactionQueue(IDBTransaction* aTransaction,
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nsIRunnable* aRunnable);
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inline void Dispatch(nsIRunnable* aRunnable);
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inline void Finish(nsIRunnable* aFinishRunnable);
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private:
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mozilla::Monitor mMonitor;
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IDBTransaction* mTransaction;
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nsAutoTArray<nsCOMPtr<nsIRunnable>, 10> mQueue;
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nsCOMPtr<nsIRunnable> mFinishRunnable;
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bool mShouldFinish;
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};
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struct TransactionInfo
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{
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nsRefPtr<IDBTransaction> transaction;
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nsRefPtr<TransactionQueue> queue;
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nsTArray<nsString> objectStoreNames;
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};
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struct DatabaseTransactionInfo
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{
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nsTArray<TransactionInfo> transactions;
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nsTArray<nsString> storesReading;
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nsTArray<nsString> storesWriting;
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};
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struct QueuedDispatchInfo
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{
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QueuedDispatchInfo()
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: finish(false)
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{ }
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nsRefPtr<IDBTransaction> transaction;
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nsCOMPtr<nsIRunnable> runnable;
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nsCOMPtr<nsIRunnable> finishRunnable;
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bool finish;
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};
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struct DatabasesCompleteCallback
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{
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nsTArray<IDBDatabase*> mDatabases;
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nsCOMPtr<nsIRunnable> mCallback;
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};
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TransactionThreadPool();
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~TransactionThreadPool();
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nsresult Init();
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nsresult Cleanup();
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void FinishTransaction(IDBTransaction* aTransaction);
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nsresult TransactionCanRun(IDBTransaction* aTransaction,
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bool* aCanRun,
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TransactionQueue** aExistingQueue);
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nsresult Dispatch(const QueuedDispatchInfo& aInfo)
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{
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return Dispatch(aInfo.transaction, aInfo.runnable, aInfo.finish,
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aInfo.finishRunnable);
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}
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bool MaybeFireCallback(DatabasesCompleteCallback& aCallback);
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nsCOMPtr<nsIThreadPool> mThreadPool;
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nsClassHashtable<nsISupportsHashKey, DatabaseTransactionInfo>
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mTransactionsInProgress;
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nsTArray<QueuedDispatchInfo> mDelayedDispatchQueue;
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nsTArray<DatabasesCompleteCallback> mCompleteCallbacks;
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};
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END_INDEXEDDB_NAMESPACE
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#endif // mozilla_dom_indexeddb_transactionthreadpool_h__
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