WebCore/loader/WorkerThreadableLoader.cpp

   1 /*
   2  * Copyright (C) 2009 Google Inc. All rights reserved.
   3  *
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   6  * met:
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   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
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  29  */
  30
  31 #include "config.h"
  32
  33 #if ENABLE(WORKERS)
  34
  35 #include "WorkerThreadableLoader.h"
  36
  37 #include "GenericWorkerTask.h"
  38 #include "ResourceError.h"
  39 #include "ResourceRequest.h"
  40 #include "ResourceResponse.h"
  41 #include "ThreadableLoader.h"
  42 #include "WorkerContext.h"
  43 #include "WorkerMessagingProxy.h"
  44 #include "WorkerThread.h"
  45 #include <memory>
  46 #include <wtf/OwnPtr.h>
  47 #include <wtf/Threading.h>
  48 #include <wtf/Vector.h>
  49
  50 using namespace std;
  51
  52 namespace WebCore {
  53
  54 // FIXME: The assumption that we can upcast worker object proxy to WorkerMessagingProxy will not be true in multi-process implementation.
  55 WorkerThreadableLoader::WorkerThreadableLoader(WorkerContext* workerContext, ThreadableLoaderClient* client, const String& taskMode, const ResourceRequest& request, LoadCallbacks callbacksSetting,
  56                                                ContentSniff contentSniff)
  57     : m_workerContext(workerContext)
  58     , m_bridge(*(new MainThreadBridge(client, *(static_cast<WorkerMessagingProxy*>(m_workerContext->thread()->workerObjectProxy())), taskMode, request, callbacksSetting, contentSniff)))
  59 {
  60 }
  61
  62 WorkerThreadableLoader::~WorkerThreadableLoader()
  63 {
  64     m_bridge.destroy();
  65 }
  66
  67 void WorkerThreadableLoader::cancel()
  68 {
  69     m_bridge.cancel();
  70 }
  71
  72 WorkerThreadableLoader::MainThreadBridge::MainThreadBridge(ThreadableLoaderClient* workerClient, WorkerMessagingProxy& messagingProxy, const String& taskMode, const ResourceRequest& request,
  73                                                            LoadCallbacks callbacksSetting, ContentSniff contentSniff)
  74     : m_workerClientWrapper(ThreadableLoaderClientWrapper::create(workerClient))
  75     , m_messagingProxy(messagingProxy)
  76     , m_taskMode(taskMode.copy())
  77 {
  78     ASSERT(workerClient);
  79     m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadCreateLoader, this, request, callbacksSetting, contentSniff));
  80 }
  81
  82 WorkerThreadableLoader::MainThreadBridge::~MainThreadBridge()
  83 {
  84 }
  85
  86 void WorkerThreadableLoader::MainThreadBridge::mainThreadCreateLoader(ScriptExecutionContext* context, MainThreadBridge* thisPtr, auto_ptr<CrossThreadResourceRequestData> requestData, LoadCallbacks callbacksSetting, ContentSniff contentSniff)
  87 {
  88     // FIXME: This assert fails for nested workers.  Removing the assert would allow it to work,
  89     // but then there would be one WorkerThreadableLoader in every intermediate worker simply
  90     // chaining the requests, which is not very good. Instead, the postTaskToWorkerObject should be a
  91     // postTaskToDocumentContext.
  92     ASSERT(isMainThread());
  93     ASSERT(context->isDocument());
  94
  95     if (thisPtr->m_messagingProxy.askedToTerminate())
  96         return;
  97
  98     // FIXME: the created loader has no knowledge of the origin of the worker doing the load request.
  99     // Basically every setting done in SubresourceLoader::create (including the contents of addExtraFieldsToRequest)
 100     // needs to be examined for how it should take into account a different originator.
 101     OwnPtr<ResourceRequest> request(ResourceRequest::adopt(requestData));
 102     // FIXME: If the a site requests a local resource, then this will return a non-zero value but the sync path
 103     // will return a 0 value.  Either this should return 0 or the other code path should do a callback with
 104     // a failure.
 105     thisPtr->m_mainThreadLoader = ThreadableLoader::create(context, thisPtr, *request, callbacksSetting, contentSniff);
 106     ASSERT(thisPtr->m_mainThreadLoader);
 107 }
 108
 109 void WorkerThreadableLoader::MainThreadBridge::mainThreadDestroy(ScriptExecutionContext* context, MainThreadBridge* thisPtr)
 110 {
 111     ASSERT(isMainThread());
 112     ASSERT_UNUSED(context, context->isDocument());
 113     delete thisPtr;
 114 }
 115
 116 void WorkerThreadableLoader::MainThreadBridge::destroy()
 117 {
 118     // Ensure that no more client callbacks are done in the worker context's thread.
 119     clearClientWrapper();
 120
 121     // "delete this" and m_mainThreadLoader::deref() on the worker object's thread.
 122     m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadDestroy, this));
 123 }
 124
 125 void WorkerThreadableLoader::MainThreadBridge::mainThreadCancel(ScriptExecutionContext* context, MainThreadBridge* thisPtr)
 126 {
 127     ASSERT(isMainThread());
 128     ASSERT_UNUSED(context, context->isDocument());
 129
 130     if (!thisPtr->m_mainThreadLoader)
 131         return;
 132     thisPtr->m_mainThreadLoader->cancel();
 133     thisPtr->m_mainThreadLoader = 0;
 134 }
 135
 136 void WorkerThreadableLoader::MainThreadBridge::cancel()
 137 {
 138     m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadCancel, this));
 139     clearClientWrapper();
 140 }
 141
 142 void WorkerThreadableLoader::MainThreadBridge::clearClientWrapper()
 143 {
 144     static_cast<ThreadableLoaderClientWrapper*>(m_workerClientWrapper.get())->clearClient();
 145 }
 146
 147 static void workerContextDidSendData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
 148 {
 149     ASSERT_UNUSED(context, context->isWorkerContext());
 150     workerClientWrapper->didSendData(bytesSent, totalBytesToBeSent);
 151 }
 152
 153 void WorkerThreadableLoader::MainThreadBridge::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
 154 {
 155     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidSendData, m_workerClientWrapper, bytesSent, totalBytesToBeSent), m_taskMode);
 156 }
 157
 158 static void workerContextDidReceiveResponse(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<CrossThreadResourceResponseData> responseData)
 159 {
 160     ASSERT_UNUSED(context, context->isWorkerContext());
 161     OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData));
 162     workerClientWrapper->didReceiveResponse(*response);
 163 }
 164
 165 void WorkerThreadableLoader::MainThreadBridge::didReceiveResponse(const ResourceResponse& response)
 166 {
 167     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveResponse, m_workerClientWrapper, response), m_taskMode);
 168 }
 169
 170 static void workerContextDidReceiveData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<Vector<char> > vectorData)
 171 {
 172     ASSERT_UNUSED(context, context->isWorkerContext());
 173     workerClientWrapper->didReceiveData(vectorData->data(), vectorData->size());
 174 }
 175
 176 void WorkerThreadableLoader::MainThreadBridge::didReceiveData(const char* data, int lengthReceived)
 177 {
 178     auto_ptr<Vector<char> > vector(new Vector<char>(lengthReceived)); // needs to be an auto_ptr for usage with createCallbackTask.
 179     memcpy(vector->data(), data, lengthReceived);
 180     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveData, m_workerClientWrapper, vector), m_taskMode);
 181 }
 182
 183 static void workerContextDidFinishLoading(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, int identifier)
 184 {
 185     ASSERT_UNUSED(context, context->isWorkerContext());
 186     workerClientWrapper->didFinishLoading(identifier);
 187 }
 188
 189 void WorkerThreadableLoader::MainThreadBridge::didFinishLoading(int identifier)
 190 {
 191     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFinishLoading, m_workerClientWrapper, identifier), m_taskMode);
 192 }
 193
 194 static void workerContextDidFail(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, const ResourceError& error)
 195 {
 196     ASSERT_UNUSED(context, context->isWorkerContext());
 197     workerClientWrapper->didFail(error);
 198 }
 199
 200 void WorkerThreadableLoader::MainThreadBridge::didFail(const ResourceError& error)
 201 {
 202     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFail, m_workerClientWrapper, error), m_taskMode);
 203 }
 204
 205 static void workerContextDidFailRedirectCheck(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper)
 206 {
 207     ASSERT_UNUSED(context, context->isWorkerContext());
 208     workerClientWrapper->didFailRedirectCheck();
 209 }
 210
 211 void WorkerThreadableLoader::MainThreadBridge::didFailRedirectCheck()
 212 {
 213     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFailRedirectCheck, m_workerClientWrapper), m_taskMode);
 214 }
 215
 216 static void workerContextDidReceiveAuthenticationCancellation(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<CrossThreadResourceResponseData> responseData)
 217 {
 218     ASSERT_UNUSED(context, context->isWorkerContext());
 219     OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData));
 220     workerClientWrapper->didReceiveAuthenticationCancellation(*response);
 221 }
 222
 223 void WorkerThreadableLoader::MainThreadBridge::didReceiveAuthenticationCancellation(const ResourceResponse& response)
 224 {
 225     m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveAuthenticationCancellation, m_workerClientWrapper, response), m_taskMode);
 226 }
 227
 228 } // namespace WebCore
 229
 230 #endif // ENABLE(WORKERS)