1 /* 2 * Copyright (C) 2009, 2010 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 #include "config.h" 32 33 #if ENABLE(WORKERS) 34 35 #include "WorkerThreadableLoader.h" 36 37 #include "Document.h" 38 #include "DocumentThreadableLoader.h" 39 #include "CrossThreadTask.h" 40 #include "ResourceError.h" 41 #include "ResourceRequest.h" 42 #include "ResourceResponse.h" 43 #include "ThreadableLoader.h" 44 #include "WorkerContext.h" 45 #include "WorkerLoaderProxy.h" 46 #include "WorkerThread.h" 47 #include <wtf/OwnPtr.h> 48 #include <wtf/Threading.h> 49 #include <wtf/Vector.h> 50 51 using namespace std; 52 53 namespace WebCore { 54 55 static const char loadResourceSynchronouslyMode[] = "loadResourceSynchronouslyMode"; 56 57 WorkerThreadableLoader::WorkerThreadableLoader(WorkerContext* workerContext, ThreadableLoaderClient* client, const String& taskMode, const ResourceRequest& request, const ThreadableLoaderOptions& options) 58 : m_workerContext(workerContext) 59 , m_workerClientWrapper(ThreadableLoaderClientWrapper::create(client)) 60 , m_bridge(*(new MainThreadBridge(m_workerClientWrapper, m_workerContext->thread()->workerLoaderProxy(), taskMode, request, options, workerContext->url().strippedForUseAsReferrer()))) 61 { 62 } 63 64 WorkerThreadableLoader::~WorkerThreadableLoader() 65 { 66 m_bridge.destroy(); 67 } 68 69 void WorkerThreadableLoader::loadResourceSynchronously(WorkerContext* workerContext, const ResourceRequest& request, ThreadableLoaderClient& client, const ThreadableLoaderOptions& options) 70 { 71 WorkerRunLoop& runLoop = workerContext->thread()->runLoop(); 72 73 // Create a unique mode just for this synchronous resource load. 74 String mode = loadResourceSynchronouslyMode; 75 mode.append(String::number(runLoop.createUniqueId())); 76 77 RefPtr<WorkerThreadableLoader> loader = WorkerThreadableLoader::create(workerContext, &client, mode, request, options); 78 MessageQueueWaitResult result = MessageQueueMessageReceived; 79 while (!loader->done() && result != MessageQueueTerminated) 80 result = runLoop.runInMode(workerContext, mode); 81 82 if (!loader->done() && result == MessageQueueTerminated) 83 loader->cancel(); 84 } 85 86 void WorkerThreadableLoader::cancel() 87 { 88 m_bridge.cancel(); 89 } 90 91 WorkerThreadableLoader::MainThreadBridge::MainThreadBridge(PassRefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, WorkerLoaderProxy& loaderProxy, const String& taskMode, 92 const ResourceRequest& request, const ThreadableLoaderOptions& options, const String& outgoingReferrer) 93 : m_workerClientWrapper(workerClientWrapper) 94 , m_loaderProxy(loaderProxy) 95 , m_taskMode(taskMode.crossThreadString()) 96 { 97 ASSERT(m_workerClientWrapper.get()); 98 m_loaderProxy.postTaskToLoader(createCallbackTask(&MainThreadBridge::mainThreadCreateLoader, this, request, options, outgoingReferrer)); 99 } 100 101 WorkerThreadableLoader::MainThreadBridge::~MainThreadBridge() 102 { 103 } 104 105 void WorkerThreadableLoader::MainThreadBridge::mainThreadCreateLoader(ScriptExecutionContext* context, MainThreadBridge* thisPtr, PassOwnPtr<CrossThreadResourceRequestData> requestData, ThreadableLoaderOptions options, const String& outgoingReferrer) 106 { 107 ASSERT(isMainThread()); 108 ASSERT(context->isDocument()); 109 Document* document = static_cast<Document*>(context); 110 111 OwnPtr<ResourceRequest> request(ResourceRequest::adopt(requestData)); 112 // FIXME: If the a site requests a local resource, then this will return a non-zero value but the sync path 113 // will return a 0 value. Either this should return 0 or the other code path should do a callback with 114 // a failure. 115 thisPtr->m_mainThreadLoader = DocumentThreadableLoader::create(document, thisPtr, *request, options, outgoingReferrer); 116 ASSERT(thisPtr->m_mainThreadLoader); 117 } 118 119 void WorkerThreadableLoader::MainThreadBridge::mainThreadDestroy(ScriptExecutionContext* context, MainThreadBridge* thisPtr) 120 { 121 ASSERT(isMainThread()); 122 ASSERT_UNUSED(context, context->isDocument()); 123 delete thisPtr; 124 } 125 126 void WorkerThreadableLoader::MainThreadBridge::destroy() 127 { 128 // Ensure that no more client callbacks are done in the worker context's thread. 129 clearClientWrapper(); 130 131 // "delete this" and m_mainThreadLoader::deref() on the worker object's thread. 132 m_loaderProxy.postTaskToLoader(createCallbackTask(&MainThreadBridge::mainThreadDestroy, this)); 133 } 134 135 void WorkerThreadableLoader::MainThreadBridge::mainThreadCancel(ScriptExecutionContext* context, MainThreadBridge* thisPtr) 136 { 137 ASSERT(isMainThread()); 138 ASSERT_UNUSED(context, context->isDocument()); 139 140 if (!thisPtr->m_mainThreadLoader) 141 return; 142 thisPtr->m_mainThreadLoader->cancel(); 143 thisPtr->m_mainThreadLoader = 0; 144 } 145 146 void WorkerThreadableLoader::MainThreadBridge::cancel() 147 { 148 m_loaderProxy.postTaskToLoader(createCallbackTask(&MainThreadBridge::mainThreadCancel, this)); 149 ThreadableLoaderClientWrapper* clientWrapper = m_workerClientWrapper.get(); 150 if (!clientWrapper->done()) { 151 // If the client hasn't reached a termination state, then transition it by sending a cancellation error. 152 // Note: no more client callbacks will be done after this method -- the clearClientWrapper() call ensures that. 153 ResourceError error(String(), 0, String(), String()); 154 error.setIsCancellation(true); 155 clientWrapper->didFail(error); 156 } 157 clearClientWrapper(); 158 } 159 160 void WorkerThreadableLoader::MainThreadBridge::clearClientWrapper() 161 { 162 m_workerClientWrapper->clearClient(); 163 } 164 165 static void workerContextDidSendData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) 166 { 167 ASSERT_UNUSED(context, context->isWorkerContext()); 168 workerClientWrapper->didSendData(bytesSent, totalBytesToBeSent); 169 } 170 171 void WorkerThreadableLoader::MainThreadBridge::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) 172 { 173 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidSendData, m_workerClientWrapper, bytesSent, totalBytesToBeSent), m_taskMode); 174 } 175 176 static void workerContextDidReceiveResponse(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<CrossThreadResourceResponseData> responseData) 177 { 178 ASSERT_UNUSED(context, context->isWorkerContext()); 179 OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData)); 180 workerClientWrapper->didReceiveResponse(*response); 181 } 182 183 void WorkerThreadableLoader::MainThreadBridge::didReceiveResponse(const ResourceResponse& response) 184 { 185 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveResponse, m_workerClientWrapper, response), m_taskMode); 186 } 187 188 static void workerContextDidReceiveData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<Vector<char> > vectorData) 189 { 190 ASSERT_UNUSED(context, context->isWorkerContext()); 191 workerClientWrapper->didReceiveData(vectorData->data(), vectorData->size()); 192 } 193 194 void WorkerThreadableLoader::MainThreadBridge::didReceiveData(const char* data, int dataLength) 195 { 196 OwnPtr<Vector<char> > vector = adoptPtr(new Vector<char>(dataLength)); // needs to be an OwnPtr for usage with createCallbackTask. 197 memcpy(vector->data(), data, dataLength); 198 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveData, m_workerClientWrapper, vector.release()), m_taskMode); 199 } 200 201 static void workerContextDidReceiveCachedMetadata(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<Vector<char> > vectorData) 202 { 203 ASSERT_UNUSED(context, context->isWorkerContext()); 204 workerClientWrapper->didReceiveCachedMetadata(vectorData->data(), vectorData->size()); 205 } 206 207 void WorkerThreadableLoader::MainThreadBridge::didReceiveCachedMetadata(const char* data, int dataLength) 208 { 209 OwnPtr<Vector<char> > vector = adoptPtr(new Vector<char>(dataLength)); // needs to be an OwnPtr for usage with createCallbackTask. 210 memcpy(vector->data(), data, dataLength); 211 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveCachedMetadata, m_workerClientWrapper, vector.release()), m_taskMode); 212 } 213 214 static void workerContextDidFinishLoading(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long identifier, double finishTime) 215 { 216 ASSERT_UNUSED(context, context->isWorkerContext()); 217 workerClientWrapper->didFinishLoading(identifier, finishTime); 218 } 219 220 void WorkerThreadableLoader::MainThreadBridge::didFinishLoading(unsigned long identifier, double finishTime) 221 { 222 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFinishLoading, m_workerClientWrapper, identifier, finishTime), m_taskMode); 223 } 224 225 static void workerContextDidFail(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, const ResourceError& error) 226 { 227 ASSERT_UNUSED(context, context->isWorkerContext()); 228 workerClientWrapper->didFail(error); 229 } 230 231 void WorkerThreadableLoader::MainThreadBridge::didFail(const ResourceError& error) 232 { 233 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFail, m_workerClientWrapper, error), m_taskMode); 234 } 235 236 static void workerContextDidFailRedirectCheck(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper) 237 { 238 ASSERT_UNUSED(context, context->isWorkerContext()); 239 workerClientWrapper->didFailRedirectCheck(); 240 } 241 242 void WorkerThreadableLoader::MainThreadBridge::didFailRedirectCheck() 243 { 244 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFailRedirectCheck, m_workerClientWrapper), m_taskMode); 245 } 246 247 static void workerContextDidReceiveAuthenticationCancellation(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<CrossThreadResourceResponseData> responseData) 248 { 249 ASSERT_UNUSED(context, context->isWorkerContext()); 250 OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData)); 251 workerClientWrapper->didReceiveAuthenticationCancellation(*response); 252 } 253 254 void WorkerThreadableLoader::MainThreadBridge::didReceiveAuthenticationCancellation(const ResourceResponse& response) 255 { 256 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveAuthenticationCancellation, m_workerClientWrapper, response), m_taskMode); 257 } 258 259 } // namespace WebCore 260 261 #endif // ENABLE(WORKERS) 262
