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32 #ifndef SQLTransactionCoordinator_h
33 #define SQLTransactionCoordinator_h
35 #include "platform/heap/Handle.h"
36 #include "wtf/Deque.h"
37 #include "wtf/HashMap.h"
38 #include "wtf/HashSet.h"
39 #include "wtf/RefPtr.h"
40 #include "wtf/text/StringHash.h"
44 class SQLTransactionBackend;
46 class SQLTransactionCoordinator : public NoBaseWillBeGarbageCollected<SQLTransactionCoordinator> {
47 WTF_MAKE_NONCOPYABLE(SQLTransactionCoordinator);
48 WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
50 SQLTransactionCoordinator();
52 void acquireLock(SQLTransactionBackend*);
53 void releaseLock(SQLTransactionBackend*);
56 typedef Deque<RefPtrWillBeMember<SQLTransactionBackend> > TransactionsQueue;
57 struct CoordinationInfo {
58 TransactionsQueue pendingTransactions;
59 WillBeHeapHashSet<RefPtrWillBeMember<SQLTransactionBackend> > activeReadTransactions;
60 RefPtrWillBeMember<SQLTransactionBackend> activeWriteTransaction;
62 void trace(Visitor* visitor)
64 visitor->trace(pendingTransactions);
65 visitor->trace(activeReadTransactions);
66 visitor->trace(activeWriteTransaction);
68 ALLOW_ONLY_INLINE_ALLOCATION();
70 // Maps database names to information about pending transactions
71 typedef WillBeHeapHashMap<String, CoordinationInfo> CoordinationInfoHeapMap;
72 CoordinationInfoHeapMap m_coordinationInfoMap;
73 bool m_isShuttingDown;
75 void processPendingTransactions(CoordinationInfo&);
78 } // namespace WebCore
80 #endif // SQLTransactionCoordinator_h