| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * Copyright (C) 2013 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef SQLTransactionCoordinator_h |
| #define SQLTransactionCoordinator_h |
| |
| #include "platform/heap/Handle.h" |
| #include "wtf/Deque.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/HashSet.h" |
| #include "wtf/text/StringHash.h" |
| |
| namespace blink { |
| |
| class SQLTransactionBackend; |
| |
| class SQLTransactionCoordinator : public GarbageCollectedFinalized<SQLTransactionCoordinator> { |
| WTF_MAKE_NONCOPYABLE(SQLTransactionCoordinator); |
| public: |
| SQLTransactionCoordinator(); |
| DECLARE_TRACE(); |
| void acquireLock(SQLTransactionBackend*); |
| void releaseLock(SQLTransactionBackend*); |
| void shutdown(); |
| |
| private: |
| typedef Deque<CrossThreadPersistent<SQLTransactionBackend>> TransactionsQueue; |
| struct CoordinationInfo { |
| DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); |
| public: |
| TransactionsQueue pendingTransactions; |
| HashSet<CrossThreadPersistent<SQLTransactionBackend>> activeReadTransactions; |
| CrossThreadPersistent<SQLTransactionBackend> activeWriteTransaction; |
| }; |
| // Maps database names to information about pending transactions |
| typedef HashMap<String, CoordinationInfo> CoordinationInfoHeapMap; |
| CoordinationInfoHeapMap m_coordinationInfoMap; |
| bool m_isShuttingDown; |
| |
| void processPendingTransactions(CoordinationInfo&); |
| }; |
| |
| } // namespace blink |
| |
| #endif // SQLTransactionCoordinator_h |