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