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Diffstat (limited to 'WebCore/loader/WorkerThreadableLoader.cpp')
-rw-r--r-- | WebCore/loader/WorkerThreadableLoader.cpp | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/WebCore/loader/WorkerThreadableLoader.cpp b/WebCore/loader/WorkerThreadableLoader.cpp new file mode 100644 index 0000000..731ffcb --- /dev/null +++ b/WebCore/loader/WorkerThreadableLoader.cpp @@ -0,0 +1,261 @@ +/* + * Copyright (C) 2009 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" + +#if ENABLE(WORKERS) + +#include "WorkerThreadableLoader.h" + +#include "GenericWorkerTask.h" +#include "ResourceError.h" +#include "ResourceRequest.h" +#include "ResourceResponse.h" +#include "ThreadableLoader.h" +#include "WorkerContext.h" +#include "WorkerMessagingProxy.h" +#include "WorkerThread.h" +#include <memory> +#include <wtf/OwnPtr.h> +#include <wtf/Threading.h> +#include <wtf/Vector.h> + +using namespace std; + +namespace WebCore { + +static const char loadResourceSynchronouslyMode[] = "loadResourceSynchronouslyMode"; + +// FIXME: The assumption that we can upcast worker object proxy to WorkerMessagingProxy will not be true in multi-process implementation. +WorkerThreadableLoader::WorkerThreadableLoader(WorkerContext* workerContext, ThreadableLoaderClient* client, const String& taskMode, const ResourceRequest& request, LoadCallbacks callbacksSetting, + ContentSniff contentSniff) + : m_workerContext(workerContext) + , m_workerClientWrapper(ThreadableLoaderClientWrapper::create(client)) + , m_bridge(*(new MainThreadBridge(m_workerClientWrapper, *(static_cast<WorkerMessagingProxy*>(m_workerContext->thread()->workerObjectProxy())), taskMode, request, callbacksSetting, + contentSniff))) +{ +} + +WorkerThreadableLoader::~WorkerThreadableLoader() +{ + m_bridge.destroy(); +} + +void WorkerThreadableLoader::loadResourceSynchronously(WorkerContext* workerContext, const ResourceRequest& request, ThreadableLoaderClient& client) +{ + WorkerRunLoop& runLoop = workerContext->thread()->runLoop(); + + // Create a unique mode just for this synchronous resource load. + String mode = loadResourceSynchronouslyMode; + mode.append(String::number(runLoop.createUniqueId())); + + ContentSniff contentSniff = request.url().isLocalFile() ? SniffContent : DoNotSniffContent; + RefPtr<WorkerThreadableLoader> loader = WorkerThreadableLoader::create(workerContext, &client, mode, request, DoNotSendLoadCallbacks, contentSniff); + + MessageQueueWaitResult result = MessageQueueMessageReceived; + while (!loader->done() && result != MessageQueueTerminated) + result = runLoop.runInMode(workerContext, mode); + + if (!loader->done() && result == MessageQueueTerminated) + loader->cancel(); +} + +void WorkerThreadableLoader::cancel() +{ + m_bridge.cancel(); +} + +WorkerThreadableLoader::MainThreadBridge::MainThreadBridge(PassRefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, WorkerMessagingProxy& messagingProxy, const String& taskMode, + const ResourceRequest& request, LoadCallbacks callbacksSetting, ContentSniff contentSniff) + : m_workerClientWrapper(workerClientWrapper) + , m_messagingProxy(messagingProxy) + , m_taskMode(taskMode.copy()) +{ + ASSERT(m_workerClientWrapper.get()); + m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadCreateLoader, this, request, callbacksSetting, contentSniff)); +} + +WorkerThreadableLoader::MainThreadBridge::~MainThreadBridge() +{ +} + +void WorkerThreadableLoader::MainThreadBridge::mainThreadCreateLoader(ScriptExecutionContext* context, MainThreadBridge* thisPtr, auto_ptr<CrossThreadResourceRequestData> requestData, LoadCallbacks callbacksSetting, ContentSniff contentSniff) +{ + // FIXME: This assert fails for nested workers. Removing the assert would allow it to work, + // but then there would be one WorkerThreadableLoader in every intermediate worker simply + // chaining the requests, which is not very good. Instead, the postTaskToWorkerObject should be a + // postTaskToDocumentContext. + ASSERT(isMainThread()); + ASSERT(context->isDocument()); + + if (thisPtr->m_messagingProxy.askedToTerminate()) + return; + + // FIXME: the created loader has no knowledge of the origin of the worker doing the load request. + // Basically every setting done in SubresourceLoader::create (including the contents of addExtraFieldsToRequest) + // needs to be examined for how it should take into account a different originator. + OwnPtr<ResourceRequest> request(ResourceRequest::adopt(requestData)); + // FIXME: If the a site requests a local resource, then this will return a non-zero value but the sync path + // will return a 0 value. Either this should return 0 or the other code path should do a callback with + // a failure. + thisPtr->m_mainThreadLoader = ThreadableLoader::create(context, thisPtr, *request, callbacksSetting, contentSniff); + ASSERT(thisPtr->m_mainThreadLoader); +} + +void WorkerThreadableLoader::MainThreadBridge::mainThreadDestroy(ScriptExecutionContext* context, MainThreadBridge* thisPtr) +{ + ASSERT(isMainThread()); + ASSERT_UNUSED(context, context->isDocument()); + delete thisPtr; +} + +void WorkerThreadableLoader::MainThreadBridge::destroy() +{ + // Ensure that no more client callbacks are done in the worker context's thread. + clearClientWrapper(); + + // "delete this" and m_mainThreadLoader::deref() on the worker object's thread. + m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadDestroy, this)); +} + +void WorkerThreadableLoader::MainThreadBridge::mainThreadCancel(ScriptExecutionContext* context, MainThreadBridge* thisPtr) +{ + ASSERT(isMainThread()); + ASSERT_UNUSED(context, context->isDocument()); + + if (!thisPtr->m_mainThreadLoader) + return; + thisPtr->m_mainThreadLoader->cancel(); + thisPtr->m_mainThreadLoader = 0; +} + +void WorkerThreadableLoader::MainThreadBridge::cancel() +{ + m_messagingProxy.postTaskToWorkerObject(createCallbackTask(&MainThreadBridge::mainThreadCancel, this)); + ThreadableLoaderClientWrapper* clientWrapper = static_cast<ThreadableLoaderClientWrapper*>(m_workerClientWrapper.get()); + if (!clientWrapper->done()) { + // If the client hasn't reached a termination state, then transition it by sending a cancellation error. + // Note: no more client callbacks will be done after this method -- the clearClientWrapper() call ensures that. + ResourceError error(String(), 0, String(), String()); + error.setIsCancellation(true); + clientWrapper->didFail(error); + } + clearClientWrapper(); +} + +void WorkerThreadableLoader::MainThreadBridge::clearClientWrapper() +{ + static_cast<ThreadableLoaderClientWrapper*>(m_workerClientWrapper.get())->clearClient(); +} + +static void workerContextDidSendData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + workerClientWrapper->didSendData(bytesSent, totalBytesToBeSent); +} + +void WorkerThreadableLoader::MainThreadBridge::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidSendData, m_workerClientWrapper, bytesSent, totalBytesToBeSent), m_taskMode); +} + +static void workerContextDidReceiveResponse(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<CrossThreadResourceResponseData> responseData) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData)); + workerClientWrapper->didReceiveResponse(*response); +} + +void WorkerThreadableLoader::MainThreadBridge::didReceiveResponse(const ResourceResponse& response) +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveResponse, m_workerClientWrapper, response), m_taskMode); +} + +static void workerContextDidReceiveData(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<Vector<char> > vectorData) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + workerClientWrapper->didReceiveData(vectorData->data(), vectorData->size()); +} + +void WorkerThreadableLoader::MainThreadBridge::didReceiveData(const char* data, int lengthReceived) +{ + auto_ptr<Vector<char> > vector(new Vector<char>(lengthReceived)); // needs to be an auto_ptr for usage with createCallbackTask. + memcpy(vector->data(), data, lengthReceived); + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveData, m_workerClientWrapper, vector), m_taskMode); +} + +static void workerContextDidFinishLoading(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, unsigned long identifier) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + workerClientWrapper->didFinishLoading(identifier); +} + +void WorkerThreadableLoader::MainThreadBridge::didFinishLoading(unsigned long identifier) +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFinishLoading, m_workerClientWrapper, identifier), m_taskMode); +} + +static void workerContextDidFail(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, const ResourceError& error) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + workerClientWrapper->didFail(error); +} + +void WorkerThreadableLoader::MainThreadBridge::didFail(const ResourceError& error) +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFail, m_workerClientWrapper, error), m_taskMode); +} + +static void workerContextDidFailRedirectCheck(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + workerClientWrapper->didFailRedirectCheck(); +} + +void WorkerThreadableLoader::MainThreadBridge::didFailRedirectCheck() +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidFailRedirectCheck, m_workerClientWrapper), m_taskMode); +} + +static void workerContextDidReceiveAuthenticationCancellation(ScriptExecutionContext* context, RefPtr<ThreadableLoaderClientWrapper> workerClientWrapper, auto_ptr<CrossThreadResourceResponseData> responseData) +{ + ASSERT_UNUSED(context, context->isWorkerContext()); + OwnPtr<ResourceResponse> response(ResourceResponse::adopt(responseData)); + workerClientWrapper->didReceiveAuthenticationCancellation(*response); +} + +void WorkerThreadableLoader::MainThreadBridge::didReceiveAuthenticationCancellation(const ResourceResponse& response) +{ + m_messagingProxy.postTaskForModeToWorkerContext(createCallbackTask(&workerContextDidReceiveAuthenticationCancellation, m_workerClientWrapper, response), m_taskMode); +} + +} // namespace WebCore + +#endif // ENABLE(WORKERS) |