1/* 2 * Copyright (C) 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 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef OriginLock_h 27#define OriginLock_h 28 29#if ENABLE(SQL_DATABASE) 30 31#include "FileSystem.h" 32#include <wtf/ThreadSafeRefCounted.h> 33#include <wtf/ThreadingPrimitives.h> 34#include <wtf/text/WTFString.h> 35 36namespace WebCore { 37 38class OriginLock : public ThreadSafeRefCounted<OriginLock> { 39 WTF_MAKE_NONCOPYABLE(OriginLock); WTF_MAKE_FAST_ALLOCATED; 40public: 41 OriginLock(String originPath); 42 ~OriginLock(); 43 44 void lock(); 45 void unlock(); 46 47 static void deleteLockFile(String originPath); 48 49private: 50 static String lockFileNameForPath(String originPath); 51 52 String m_lockFileName; 53 Mutex m_mutex; 54#if USE(FILE_LOCK) 55 PlatformFileHandle m_lockHandle; 56#endif 57}; 58 59} // namespace WebCore 60 61#endif // ENABLE(SQL_DATABASE) 62 63#endif // OriginLock_h 64