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 "ContentSecurityPolicy.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 46namespace WebCore { 47 48 class Document; 49 class KURL; 50 class MessagePortChannel; 51 class ScriptExecutionContext; 52 class SharedWorker; 53 class SharedWorkerProxy; 54 55 typedef int ExceptionCode; 56 57 // Platform-specific implementation of the SharedWorkerRepository static interface. 58 class DefaultSharedWorkerRepository { 59 WTF_MAKE_NONCOPYABLE(DefaultSharedWorkerRepository); WTF_MAKE_FAST_ALLOCATED; 60 public: 61 // Returns true if the platform supports SharedWorkers, otherwise false. 62 static bool isAvailable(); 63 64 // Invoked once the worker script has been loaded to fire up the worker thread. 65 void workerScriptLoaded(SharedWorkerProxy&, const String& userAgent, const String& workerScript, PassOwnPtr<MessagePortChannel>, const String& contentSecurityPolicy, ContentSecurityPolicy::HeaderType); 66 67 // Internal implementation of SharedWorkerRepository::connect() 68 void connectToWorker(PassRefPtr<SharedWorker>, PassOwnPtr<MessagePortChannel>, const KURL&, const String& name, ExceptionCode&); 69 70 // Notification that a document has been detached. 71 void documentDetached(Document*); 72 73 // Removes the passed SharedWorkerProxy from the repository. 74 void removeProxy(SharedWorkerProxy*); 75 76 bool hasSharedWorkers(Document*); 77 78 static DefaultSharedWorkerRepository& instance(); 79 private: 80 DefaultSharedWorkerRepository(); 81 ~DefaultSharedWorkerRepository(); 82 83 PassRefPtr<SharedWorkerProxy> getProxy(const String& name, const KURL&); 84 // Mutex used to protect internal data structures. 85 Mutex m_lock; 86 87 // 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. 88 typedef Vector<RefPtr<SharedWorkerProxy> > SharedWorkerProxyRepository; 89 SharedWorkerProxyRepository m_proxies; 90 }; 91 92} // namespace WebCore 93 94#endif // ENABLE(SHARED_WORKERS) 95 96#endif // DefaultSharedWorkerRepository_h 97