1 /* 2 * Copyright (C) 2009 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef DefaultSharedWorkerRepository_h 32 #define DefaultSharedWorkerRepository_h 33 34 #if ENABLE(SHARED_WORKERS) 35 36 #include "ExceptionCode.h" 37 #include <wtf/Forward.h> 38 #include <wtf/HashMap.h> 39 #include <wtf/Noncopyable.h> 40 #include <wtf/PassOwnPtr.h> 41 #include <wtf/PassRefPtr.h> 42 #include <wtf/RefPtr.h> 43 #include <wtf/Threading.h> 44 #include <wtf/text/StringHash.h> 45 46 namespace WebCore { 47 48 class Document; 49 class KURL; 50 class MessagePortChannel; 51 class ScriptExecutionContext; 52 class SharedWorker; 53 class SharedWorkerProxy; 54 55 // Platform-specific implementation of the SharedWorkerRepository static interface. 56 class DefaultSharedWorkerRepository { 57 WTF_MAKE_NONCOPYABLE(DefaultSharedWorkerRepository); WTF_MAKE_FAST_ALLOCATED; 58 public: 59 // Invoked once the worker script has been loaded to fire up the worker thread. 60 void workerScriptLoaded(SharedWorkerProxy&, const String& userAgent, const String& workerScript, PassOwnPtr<MessagePortChannel>); 61 62 // Internal implementation of SharedWorkerRepository::connect() 63 void connectToWorker(PassRefPtr<SharedWorker>, PassOwnPtr<MessagePortChannel>, const KURL&, const String& name, ExceptionCode&); 64 65 // Notification that a document has been detached. 66 void documentDetached(Document*); 67 68 // Removes the passed SharedWorkerProxy from the repository. 69 void removeProxy(SharedWorkerProxy*); 70 71 bool hasSharedWorkers(Document*); 72 73 static DefaultSharedWorkerRepository& instance(); 74 private: 75 DefaultSharedWorkerRepository(); 76 ~DefaultSharedWorkerRepository(); 77 78 PassRefPtr<SharedWorkerProxy> getProxy(const String& name, const KURL&); 79 // Mutex used to protect internal data structures. 80 Mutex m_lock; 81 82 // List of shared workers. Expectation is that there will be a limited number of shared workers, and so tracking them in a Vector is more efficient than nested HashMaps. 83 typedef Vector<RefPtr<SharedWorkerProxy> > SharedWorkerProxyRepository; 84 SharedWorkerProxyRepository m_proxies; 85 }; 86 87 } // namespace WebCore 88 89 #endif // ENABLE(SHARED_WORKERS) 90 91 #endif // DefaultSharedWorkerRepository_h 92