1 /* 2 * Copyright (C) 2007, 2008, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef DatabaseTask_h 30 #define DatabaseTask_h 31 32 #include "modules/webdatabase/Database.h" 33 #include "modules/webdatabase/DatabaseBasicTypes.h" 34 #include "modules/webdatabase/DatabaseError.h" 35 #include "modules/webdatabase/SQLTransactionBackend.h" 36 #include "platform/Task.h" 37 #include "platform/TaskSynchronizer.h" 38 #include "platform/heap/Handle.h" 39 #include "wtf/OwnPtr.h" 40 #include "wtf/PassOwnPtr.h" 41 #include "wtf/PassRefPtr.h" 42 #include "wtf/RefPtr.h" 43 #include "wtf/Threading.h" 44 #include "wtf/Vector.h" 45 #include "wtf/text/WTFString.h" 46 47 namespace blink { 48 49 class DatabaseTask : public WebThread::Task { 50 WTF_MAKE_NONCOPYABLE(DatabaseTask); WTF_MAKE_FAST_ALLOCATED; 51 public: 52 virtual ~DatabaseTask(); 53 54 virtual void run() OVERRIDE FINAL; 55 56 Database* database() const { return m_database.get(); } 57 #if ENABLE(ASSERT) 58 bool hasSynchronizer() const { return m_synchronizer; } 59 #endif 60 61 protected: 62 DatabaseTask(Database*, TaskSynchronizer*); 63 64 private: 65 virtual void doPerformTask() = 0; 66 virtual void taskCancelled() { } 67 68 RefPtrWillBeCrossThreadPersistent<Database> m_database; 69 TaskSynchronizer* m_synchronizer; 70 71 #if !LOG_DISABLED 72 virtual const char* debugTaskName() const = 0; 73 bool m_complete; 74 #endif 75 }; 76 77 class Database::DatabaseOpenTask FINAL : public DatabaseTask { 78 public: 79 static PassOwnPtr<DatabaseOpenTask> create(Database* db, bool setVersionInNewDatabase, TaskSynchronizer* synchronizer, DatabaseError& error, String& errorMessage, bool& success) 80 { 81 return adoptPtr(new DatabaseOpenTask(db, setVersionInNewDatabase, synchronizer, error, errorMessage, success)); 82 } 83 84 private: 85 DatabaseOpenTask(Database*, bool setVersionInNewDatabase, TaskSynchronizer*, DatabaseError&, String& errorMessage, bool& success); 86 87 virtual void doPerformTask() OVERRIDE; 88 #if !LOG_DISABLED 89 virtual const char* debugTaskName() const OVERRIDE; 90 #endif 91 92 bool m_setVersionInNewDatabase; 93 DatabaseError& m_error; 94 String& m_errorMessage; 95 bool& m_success; 96 }; 97 98 class Database::DatabaseCloseTask FINAL : public DatabaseTask { 99 public: 100 static PassOwnPtr<DatabaseCloseTask> create(Database* db, TaskSynchronizer* synchronizer) 101 { 102 return adoptPtr(new DatabaseCloseTask(db, synchronizer)); 103 } 104 105 private: 106 DatabaseCloseTask(Database*, TaskSynchronizer*); 107 108 virtual void doPerformTask() OVERRIDE; 109 #if !LOG_DISABLED 110 virtual const char* debugTaskName() const OVERRIDE; 111 #endif 112 }; 113 114 class Database::DatabaseTransactionTask FINAL : public DatabaseTask { 115 public: 116 virtual ~DatabaseTransactionTask(); 117 118 // Transaction task is never synchronous, so no 'synchronizer' parameter. 119 static PassOwnPtr<DatabaseTransactionTask> create(PassRefPtrWillBeRawPtr<SQLTransactionBackend> transaction) 120 { 121 return adoptPtr(new DatabaseTransactionTask(transaction)); 122 } 123 124 SQLTransactionBackend* transaction() const { return m_transaction.get(); } 125 126 private: 127 explicit DatabaseTransactionTask(PassRefPtrWillBeRawPtr<SQLTransactionBackend>); 128 129 virtual void doPerformTask() OVERRIDE; 130 virtual void taskCancelled() OVERRIDE; 131 #if !LOG_DISABLED 132 virtual const char* debugTaskName() const OVERRIDE; 133 #endif 134 135 RefPtrWillBeCrossThreadPersistent<SQLTransactionBackend> m_transaction; 136 }; 137 138 class Database::DatabaseTableNamesTask FINAL : public DatabaseTask { 139 public: 140 static PassOwnPtr<DatabaseTableNamesTask> create(Database* db, TaskSynchronizer* synchronizer, Vector<String>& names) 141 { 142 return adoptPtr(new DatabaseTableNamesTask(db, synchronizer, names)); 143 } 144 145 private: 146 DatabaseTableNamesTask(Database*, TaskSynchronizer*, Vector<String>& names); 147 148 virtual void doPerformTask() OVERRIDE; 149 #if !LOG_DISABLED 150 virtual const char* debugTaskName() const OVERRIDE; 151 #endif 152 153 Vector<String>& m_tableNames; 154 }; 155 156 } // namespace blink 157 158 #endif // DatabaseTask_h 159
