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
WorkerThreadableLoader(WorkerContext * workerContext,ThreadableLoaderClient * client,const String & taskMode,const ResourceRequest & request,const ThreadableLoaderOptions & options)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
~WorkerThreadableLoader()64 WorkerThreadableLoader::~WorkerThreadableLoader()
65 {
66 m_bridge.destroy();
67 }
68
loadResourceSynchronously(WorkerContext * workerContext,const ResourceRequest & request,ThreadableLoaderClient & client,const ThreadableLoaderOptions & options)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
cancel()86 void WorkerThreadableLoader::cancel()
87 {
88 m_bridge.cancel();
89 }
90
MainThreadBridge(PassRefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,WorkerLoaderProxy & loaderProxy,const String & taskMode,const ResourceRequest & request,const ThreadableLoaderOptions & options,const String & outgoingReferrer)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(
99 createCallbackTask(&MainThreadBridge::mainThreadCreateLoader,
100 AllowCrossThreadAccess(this), request, options, outgoingReferrer));
101 }
102
~MainThreadBridge()103 WorkerThreadableLoader::MainThreadBridge::~MainThreadBridge()
104 {
105 }
106
mainThreadCreateLoader(ScriptExecutionContext * context,MainThreadBridge * thisPtr,PassOwnPtr<CrossThreadResourceRequestData> requestData,ThreadableLoaderOptions options,const String & outgoingReferrer)107 void WorkerThreadableLoader::MainThreadBridge::mainThreadCreateLoader(ScriptExecutionContext* context, MainThreadBridge* thisPtr, PassOwnPtr<CrossThreadResourceRequestData> requestData, ThreadableLoaderOptions options, const String& outgoingReferrer)
108 {
109 ASSERT(isMainThread());
110 ASSERT(context->isDocument());
111 Document* document = static_cast<Document*>(context);
112
113 OwnPtr<ResourceRequest> request(ResourceRequest::adopt(requestData));
114 // FIXME: If the a site requests a local resource, then this will return a non-zero value but the sync path
115 // will return a 0 value. Either this should return 0 or the other code path should do a callback with
116 // a failure.
117 thisPtr->m_mainThreadLoader = DocumentThreadableLoader::create(document, thisPtr, *request, options, outgoingReferrer);
118 ASSERT(thisPtr->m_mainThreadLoader);
119 }
120
mainThreadDestroy(ScriptExecutionContext * context,MainThreadBridge * thisPtr)121 void WorkerThreadableLoader::MainThreadBridge::mainThreadDestroy(ScriptExecutionContext* context, MainThreadBridge* thisPtr)
122 {
123 ASSERT(isMainThread());
124 ASSERT_UNUSED(context, context->isDocument());
125 delete thisPtr;
126 }
127
destroy()128 void WorkerThreadableLoader::MainThreadBridge::destroy()
129 {
130 // Ensure that no more client callbacks are done in the worker context's thread.
131 clearClientWrapper();
132
133 // "delete this" and m_mainThreadLoader::deref() on the worker object's thread.
134 m_loaderProxy.postTaskToLoader(
135 createCallbackTask(&MainThreadBridge::mainThreadDestroy, AllowCrossThreadAccess(this)));
136 }
137
mainThreadCancel(ScriptExecutionContext * context,MainThreadBridge * thisPtr)138 void WorkerThreadableLoader::MainThreadBridge::mainThreadCancel(ScriptExecutionContext* context, MainThreadBridge* thisPtr)
139 {
140 ASSERT(isMainThread());
141 ASSERT_UNUSED(context, context->isDocument());
142
143 if (!thisPtr->m_mainThreadLoader)
144 return;
145 thisPtr->m_mainThreadLoader->cancel();
146 thisPtr->m_mainThreadLoader = 0;
147 }
148
cancel()149 void WorkerThreadableLoader::MainThreadBridge::cancel()
150 {
151 m_loaderProxy.postTaskToLoader(
152 createCallbackTask(&MainThreadBridge::mainThreadCancel, AllowCrossThreadAccess(this)));
153 ThreadableLoaderClientWrapper* clientWrapper = m_workerClientWrapper.get();
154 if (!clientWrapper->done()) {
155 // If the client hasn't reached a termination state, then transition it by sending a cancellation error.
156 // Note: no more client callbacks will be done after this method -- the clearClientWrapper() call ensures that.
157 ResourceError error(String(), 0, String(), String());
158 error.setIsCancellation(true);
159 clientWrapper->didFail(error);
160 }
161 clearClientWrapper();
162 }
163
clearClientWrapper()164 void WorkerThreadableLoader::MainThreadBridge::clearClientWrapper()
165 {
166 m_workerClientWrapper->clearClient();
167 }
168
workerContextDidSendData(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,unsigned long long bytesSent,unsigned long long totalBytesToBeSent)169 static void workerContextDidSendData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
170 {
171 ASSERT_UNUSED(context, context->isWorkerContext());
172 workerClientWrapper->didSendData(bytesSent, totalBytesToBeSent);
173 }
174
didSendData(unsigned long long bytesSent,unsigned long long totalBytesToBeSent)175 void WorkerThreadableLoader::MainThreadBridge::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
176 {
177 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidSendData, m_workerClientWrapper, bytesSent, totalBytesToBeSent), m_taskMode);
178 }
179
workerContextDidReceiveResponse(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,PassOwnPtr<CrossThreadResourceResponseData> responseData)180 static void workerContextDidReceiveResponse(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<CrossThreadResourceResponseData> responseData)
181 {
182 ASSERT_UNUSED(context, context->isWorkerContext());
183 OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData));
184 workerClientWrapper->didReceiveResponse(*response);
185 }
186
didReceiveResponse(const ResourceResponse & response)187 void WorkerThreadableLoader::MainThreadBridge::didReceiveResponse(const ResourceResponse& response)
188 {
189 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveResponse, m_workerClientWrapper, response), m_taskMode);
190 }
191
workerContextDidReceiveData(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,PassOwnPtr<Vector<char>> vectorData)192 static void workerContextDidReceiveData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<Vector<char> > vectorData)
193 {
194 ASSERT_UNUSED(context, context->isWorkerContext());
195 workerClientWrapper->didReceiveData(vectorData->data(), vectorData->size());
196 }
197
didReceiveData(const char * data,int dataLength)198 void WorkerThreadableLoader::MainThreadBridge::didReceiveData(const char* data, int dataLength)
199 {
200 OwnPtr<Vector<char> > vector = adoptPtr(new Vector<char>(dataLength)); // needs to be an OwnPtr for usage with createCallbackTask.
201 memcpy(vector->data(), data, dataLength);
202 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveData, m_workerClientWrapper, vector.release()), m_taskMode);
203 }
204
workerContextDidReceiveCachedMetadata(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,PassOwnPtr<Vector<char>> vectorData)205 static void workerContextDidReceiveCachedMetadata(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<Vector<char> > vectorData)
206 {
207 ASSERT_UNUSED(context, context->isWorkerContext());
208 workerClientWrapper->didReceiveCachedMetadata(vectorData->data(), vectorData->size());
209 }
210
didReceiveCachedMetadata(const char * data,int dataLength)211 void WorkerThreadableLoader::MainThreadBridge::didReceiveCachedMetadata(const char* data, int dataLength)
212 {
213 OwnPtr<Vector<char> > vector = adoptPtr(new Vector<char>(dataLength)); // needs to be an OwnPtr for usage with createCallbackTask.
214 memcpy(vector->data(), data, dataLength);
215 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveCachedMetadata, m_workerClientWrapper, vector.release()), m_taskMode);
216 }
217
workerContextDidFinishLoading(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,unsigned long identifier,double finishTime)218 static void workerContextDidFinishLoading(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long identifier, double finishTime)
219 {
220 ASSERT_UNUSED(context, context->isWorkerContext());
221 workerClientWrapper->didFinishLoading(identifier, finishTime);
222 }
223
didFinishLoading(unsigned long identifier,double finishTime)224 void WorkerThreadableLoader::MainThreadBridge::didFinishLoading(unsigned long identifier, double finishTime)
225 {
226 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFinishLoading, m_workerClientWrapper, identifier, finishTime), m_taskMode);
227 }
228
workerContextDidFail(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,const ResourceError & error)229 static void workerContextDidFail(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, const ResourceError& error)
230 {
231 ASSERT_UNUSED(context, context->isWorkerContext());
232 workerClientWrapper->didFail(error);
233 }
234
didFail(const ResourceError & error)235 void WorkerThreadableLoader::MainThreadBridge::didFail(const ResourceError& error)
236 {
237 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFail, m_workerClientWrapper, error), m_taskMode);
238 }
239
workerContextDidFailRedirectCheck(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper)240 static void workerContextDidFailRedirectCheck(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper)
241 {
242 ASSERT_UNUSED(context, context->isWorkerContext());
243 workerClientWrapper->didFailRedirectCheck();
244 }
245
didFailRedirectCheck()246 void WorkerThreadableLoader::MainThreadBridge::didFailRedirectCheck()
247 {
248 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFailRedirectCheck, m_workerClientWrapper), m_taskMode);
249 }
250
workerContextDidReceiveAuthenticationCancellation(ScriptExecutionContext * context,RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper,PassOwnPtr<CrossThreadResourceResponseData> responseData)251 static void workerContextDidReceiveAuthenticationCancellation(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, PassOwnPtr<CrossThreadResourceResponseData> responseData)
252 {
253 ASSERT_UNUSED(context, context->isWorkerContext());
254 OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData));
255 workerClientWrapper->didReceiveAuthenticationCancellation(*response);
256 }
257
didReceiveAuthenticationCancellation(const ResourceResponse & response)258 void WorkerThreadableLoader::MainThreadBridge::didReceiveAuthenticationCancellation(const ResourceResponse& response)
259 {
260 m_loaderProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveAuthenticationCancellation, m_workerClientWrapper, response), m_taskMode);
261 }
262
263 } // namespace WebCore
264
265 #endif // ENABLE(WORKERS)
266