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("Apple") nor the names of 1453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * its contributors may be used to endorse or promote products derived 1553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * from this software without specific prior written permission. 1653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * 1753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 1853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 2053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 2153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 2353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 2453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) */ 2853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 2953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#ifndef DatabaseTracker_h 3053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#define DatabaseTracker_h 3153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 3253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "modules/webdatabase/DatabaseError.h" 3353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "wtf/HashMap.h" 3453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "wtf/HashSet.h" 3553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "wtf/ThreadingPrimitives.h" 3653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "wtf/text/StringHash.h" 3753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "wtf/text/WTFString.h" 3853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 3953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)namespace WebCore { 4053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 4153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)class DatabaseBackendBase; 4253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)class DatabaseBackendContext; 4353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)class OriginLock; 4453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)class SecurityOrigin; 4553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 4653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)class DatabaseTracker { 4753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) WTF_MAKE_NONCOPYABLE(DatabaseTracker); WTF_MAKE_FAST_ALLOCATED; 4853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)public: 4953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) static DatabaseTracker& tracker(); 5053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // This singleton will potentially be used from multiple worker threads and the page's context thread simultaneously. To keep this safe, it's 5153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // currently using 4 locks. In order to avoid deadlock when taking multiple locks, you must take them in the correct order: 5253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // m_databaseGuard before quotaManager if both locks are needed. 5353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // m_openDatabaseMapGuard before quotaManager if both locks are needed. 5453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // m_databaseGuard and m_openDatabaseMapGuard currently don't overlap. 5553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) // notificationMutex() is currently independent of the other locks. 5653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 5753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) bool canEstablishDatabase(DatabaseBackendContext*, const String& name, const String& displayName, unsigned long estimatedSize, DatabaseError&); 5853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) String fullPathForDatabase(SecurityOrigin*, const String& name, bool createIfDoesNotExist = true); 5953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 6053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void addOpenDatabase(DatabaseBackendBase*); 6153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void removeOpenDatabase(DatabaseBackendBase*); 6253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void getOpenDatabases(SecurityOrigin*, const String& name, HashSet<RefPtr<DatabaseBackendBase> >* databases); 6353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 6453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) unsigned long long getMaxSizeForDatabase(const DatabaseBackendBase*); 6553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 6653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void interruptAllDatabasesForContext(const DatabaseBackendContext*); 6753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void closeDatabasesImmediately(const String& originIdentifier, const String& name); 6853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 6953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void prepareToOpenDatabase(DatabaseBackendBase*); 7053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void failedToOpenDatabase(DatabaseBackendBase*); 7153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 7253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)private: 7353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) typedef HashSet<DatabaseBackendBase*> DatabaseSet; 7453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) typedef HashMap<String, DatabaseSet*> DatabaseNameMap; 7553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) typedef HashMap<String, DatabaseNameMap*> DatabaseOriginMap; 7653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) class CloseOneDatabaseImmediatelyTask; 7753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 7853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) DatabaseTracker(); 7953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 8053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) void closeOneDatabaseImmediately(const String& originIdentifier, const String& name, DatabaseBackendBase*); 8153e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 8253e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) Mutex m_openDatabaseMapGuard; 8353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) mutable OwnPtr<DatabaseOriginMap> m_openDatabaseMap; 8453e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)}; 8553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 8653e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)} // namespace WebCore 8753e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) 8853e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#endif // DatabaseTracker_h 89