1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * Copyright (C) 2011 Google, Inc. All Rights Reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #ifndef DatabaseContext_h 29 #define DatabaseContext_h 30 31 #include "core/dom/ActiveDOMObject.h" 32 #include "platform/heap/Handle.h" 33 #include "wtf/PassRefPtr.h" 34 #include "wtf/ThreadSafeRefCounted.h" 35 36 namespace blink { 37 38 class Database; 39 class DatabaseContext; 40 class TaskSynchronizer; 41 class DatabaseThread; 42 class ExecutionContext; 43 class SecurityOrigin; 44 45 class DatabaseContext FINAL 46 : public ThreadSafeRefCountedWillBeGarbageCollectedFinalized<DatabaseContext> 47 , public ActiveDOMObject { 48 public: 49 friend class DatabaseManager; 50 51 static PassRefPtrWillBeRawPtr<DatabaseContext> create(ExecutionContext*); 52 53 virtual ~DatabaseContext(); 54 void trace(Visitor*); 55 56 // For life-cycle management (inherited from ActiveDOMObject): 57 virtual void contextDestroyed() OVERRIDE; 58 virtual void stop() OVERRIDE; 59 60 DatabaseContext* backend(); 61 DatabaseThread* databaseThread(); 62 bool databaseThreadAvailable(); 63 64 void setHasOpenDatabases() { m_hasOpenDatabases = true; } 65 // Blocks the caller thread until cleanup tasks are completed. 66 void stopDatabases(); 67 68 bool allowDatabaseAccess() const; 69 70 SecurityOrigin* securityOrigin() const; 71 bool isContextThread() const; 72 73 private: 74 explicit DatabaseContext(ExecutionContext*); 75 76 RefPtrWillBeMember<DatabaseThread> m_databaseThread; 77 bool m_hasOpenDatabases; // This never changes back to false, even after the database thread is closed. 78 bool m_hasRequestedTermination; 79 }; 80 81 } // namespace blink 82 83 #endif // DatabaseContext_h 84
