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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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35 #include "wtf/RefPtr.h" | 35 #include "wtf/RefPtr.h" |
36 | 36 |
37 namespace WebCore { | 37 namespace WebCore { |
38 | 38 |
39 class IDBDatabaseBackendImpl; | 39 class IDBDatabaseBackendImpl; |
40 class IDBCursorBackendImpl; | 40 class IDBCursorBackendImpl; |
41 class IDBDatabaseCallbacks; | 41 class IDBDatabaseCallbacks; |
42 | 42 |
43 class IDBTransactionBackendImpl : public RefCounted<IDBTransactionBackendImpl> { | 43 class IDBTransactionBackendImpl : public RefCounted<IDBTransactionBackendImpl> { |
44 public: | 44 public: |
45 static PassRefPtr<IDBTransactionBackendImpl> create(int64_t transactionId, P
assRefPtr<IDBDatabaseCallbacks>, const Vector<int64_t>&, IndexedDB::TransactionM
ode, IDBDatabaseBackendImpl*); | 45 static PassRefPtr<IDBTransactionBackendImpl> create(int64_t transactionId, I
DBDatabaseCallbacks*, const Vector<int64_t>&, IndexedDB::TransactionMode, IDBDat
abaseBackendImpl*); |
46 virtual ~IDBTransactionBackendImpl(); | 46 virtual ~IDBTransactionBackendImpl(); |
47 | 47 |
48 virtual void abort(); | 48 virtual void abort(); |
49 void commit(); | 49 void commit(); |
50 | 50 |
51 class Operation { | 51 class Operation { |
52 public: | 52 public: |
53 virtual ~Operation() { } | 53 virtual ~Operation() { } |
54 virtual void perform(IDBTransactionBackendImpl*) = 0; | 54 virtual void perform(IDBTransactionBackendImpl*) = 0; |
55 }; | 55 }; |
56 | 56 |
57 void abort(PassRefPtr<IDBDatabaseError>); | 57 void abort(PassRefPtr<IDBDatabaseError>); |
58 void run(); | 58 void run(); |
59 IndexedDB::TransactionMode mode() const { return m_mode; } | 59 IndexedDB::TransactionMode mode() const { return m_mode; } |
60 const HashSet<int64_t>& scope() const { return m_objectStoreIds; } | 60 const HashSet<int64_t>& scope() const { return m_objectStoreIds; } |
61 void scheduleTask(PassOwnPtr<Operation> task, PassOwnPtr<Operation> abortTas
k = nullptr) { scheduleTask(IDBDatabaseBackendInterface::NormalTask, task, abort
Task); } | 61 void scheduleTask(PassOwnPtr<Operation> task, PassOwnPtr<Operation> abortTas
k = nullptr) { scheduleTask(IDBDatabaseBackendInterface::NormalTask, task, abort
Task); } |
62 void scheduleTask(IDBDatabaseBackendInterface::TaskType, PassOwnPtr<Operatio
n>, PassOwnPtr<Operation> abortTask = nullptr); | 62 void scheduleTask(IDBDatabaseBackendInterface::TaskType, PassOwnPtr<Operatio
n>, PassOwnPtr<Operation> abortTask = nullptr); |
63 void registerOpenCursor(IDBCursorBackendImpl*); | 63 void registerOpenCursor(IDBCursorBackendImpl*); |
64 void unregisterOpenCursor(IDBCursorBackendImpl*); | 64 void unregisterOpenCursor(IDBCursorBackendImpl*); |
65 void addPreemptiveEvent() { m_pendingPreemptiveEvents++; } | 65 void addPreemptiveEvent() { m_pendingPreemptiveEvents++; } |
66 void didCompletePreemptiveEvent() { m_pendingPreemptiveEvents--; ASSERT(m_pe
ndingPreemptiveEvents >= 0); } | 66 void didCompletePreemptiveEvent() { m_pendingPreemptiveEvents--; ASSERT(m_pe
ndingPreemptiveEvents >= 0); } |
67 IDBBackingStore::Transaction* backingStoreTransaction() { return &m_transact
ion; } | 67 IDBBackingStore::Transaction* backingStoreTransaction() { return &m_transact
ion; } |
68 int64_t id() const { return m_id; } | 68 int64_t id() const { return m_id; } |
69 | 69 |
70 IDBDatabaseBackendImpl* database() const { return m_database.get(); } | 70 IDBDatabaseBackendImpl* database() const { return m_database.raw(); } |
71 IDBDatabaseCallbacks* connection() const { return m_callbacks.get(); } | 71 IDBDatabaseCallbacks* connection() const { return m_callbacks.raw(); } |
72 | 72 |
73 private: | 73 private: |
74 IDBTransactionBackendImpl(int64_t id, PassRefPtr<IDBDatabaseCallbacks>, cons
t HashSet<int64_t>& objectStoreIds, IndexedDB::TransactionMode, IDBDatabaseBacke
ndImpl*); | 74 IDBTransactionBackendImpl(int64_t id, IDBDatabaseCallbacks*, const HashSet<i
nt64_t>& objectStoreIds, IndexedDB::TransactionMode, IDBDatabaseBackendImpl*); |
75 | 75 |
76 enum State { | 76 enum State { |
77 Unused, // Created, but no tasks yet. | 77 Unused, // Created, but no tasks yet. |
78 StartPending, // Enqueued tasks, but backing store transaction not yet s
tarted. | 78 StartPending, // Enqueued tasks, but backing store transaction not yet s
tarted. |
79 Running, // Backing store transaction started but not yet finished. | 79 Running, // Backing store transaction started but not yet finished. |
80 Finished, // Either aborted or committed. | 80 Finished, // Either aborted or committed. |
81 }; | 81 }; |
82 | 82 |
83 void start(); | 83 void start(); |
84 | 84 |
85 bool isTaskQueueEmpty() const; | 85 bool isTaskQueueEmpty() const; |
86 bool hasPendingTasks() const; | 86 bool hasPendingTasks() const; |
87 | 87 |
88 void taskTimerFired(Timer<IDBTransactionBackendImpl>*); | 88 void taskTimerFired(Timer<IDBTransactionBackendImpl>*); |
89 void closeOpenCursors(); | 89 void closeOpenCursors(); |
90 | 90 |
91 const int64_t m_id; | 91 const int64_t m_id; |
92 const HashSet<int64_t> m_objectStoreIds; | 92 const HashSet<int64_t> m_objectStoreIds; |
93 const IndexedDB::TransactionMode m_mode; | 93 const IndexedDB::TransactionMode m_mode; |
94 | 94 |
95 State m_state; | 95 State m_state; |
96 bool m_commitPending; | 96 bool m_commitPending; |
97 RefPtr<IDBDatabaseCallbacks> m_callbacks; | 97 Persistent<IDBDatabaseCallbacks> m_callbacks; |
98 RefPtr<IDBDatabaseBackendImpl> m_database; | 98 Persistent<IDBDatabaseBackendImpl> m_database; |
99 | 99 |
100 typedef Deque<OwnPtr<Operation> > TaskQueue; | 100 typedef Deque<OwnPtr<Operation> > TaskQueue; |
101 TaskQueue m_taskQueue; | 101 TaskQueue m_taskQueue; |
102 TaskQueue m_preemptiveTaskQueue; | 102 TaskQueue m_preemptiveTaskQueue; |
103 TaskQueue m_abortTaskQueue; | 103 TaskQueue m_abortTaskQueue; |
104 | 104 |
105 IDBBackingStore::Transaction m_transaction; | 105 IDBBackingStore::Transaction m_transaction; |
106 | 106 |
107 // FIXME: delete the timer once we have threads instead. | 107 // FIXME: delete the timer once we have threads instead. |
108 Timer<IDBTransactionBackendImpl> m_taskTimer; | 108 Timer<IDBTransactionBackendImpl> m_taskTimer; |
109 int m_pendingPreemptiveEvents; | 109 int m_pendingPreemptiveEvents; |
110 | 110 |
111 HashSet<IDBCursorBackendImpl*> m_openCursors; | 111 HashSet<IDBCursorBackendImpl*> m_openCursors; |
112 }; | 112 }; |
113 | 113 |
114 } // namespace WebCore | 114 } // namespace WebCore |
115 | 115 |
116 #endif // IDBTransactionBackendImpl_h | 116 #endif // IDBTransactionBackendImpl_h |
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