119 lines
4.2 KiB
C++
119 lines
4.2 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "NetworkSendQueue.h"
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#include "BlobLoader.h"
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#include "ScriptExecutionContext.h"
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namespace WebCore {
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NetworkSendQueue::NetworkSendQueue(ScriptExecutionContext& context, WriteString&& writeString, WriteRawData&& writeRawData, ProcessError&& processError)
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: ContextDestructionObserver(&context)
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, m_writeString(WTFMove(writeString))
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, m_writeRawData(WTFMove(writeRawData))
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, m_processError(WTFMove(processError))
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{
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}
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NetworkSendQueue::~NetworkSendQueue() = default;
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void NetworkSendQueue::enqueue(CString&& utf8)
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{
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if (m_queue.isEmpty()) {
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m_writeString(utf8);
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return;
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}
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m_queue.append(WTFMove(utf8));
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}
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void NetworkSendQueue::enqueue(const JSC::ArrayBuffer& binaryData, unsigned byteOffset, unsigned byteLength)
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{
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if (m_queue.isEmpty()) {
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auto* data = static_cast<const uint8_t*>(binaryData.data());
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m_writeRawData(Span { data + byteOffset, byteLength });
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return;
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}
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m_queue.append(SharedBuffer::create(static_cast<const uint8_t*>(binaryData.data()) + byteOffset, byteLength));
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}
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void NetworkSendQueue::enqueue(WebCore::Blob& blob)
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{
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auto* context = scriptExecutionContext();
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if (!context)
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return;
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auto byteLength = blob.size();
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if (!byteLength) {
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enqueue(JSC::ArrayBuffer::create(0U, 1), 0, 0);
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return;
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}
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auto blobLoader = makeUniqueRef<BlobLoader>([this](BlobLoader&) {
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processMessages();
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});
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auto* blobLoaderPtr = &blobLoader.get();
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m_queue.append(WTFMove(blobLoader));
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blobLoaderPtr->start(blob, context, FileReaderLoader::ReadAsArrayBuffer);
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}
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void NetworkSendQueue::clear()
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{
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// Do not call m_queue.clear() here since destroying a BlobLoader will cause its completion
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// handler to get called, which will call processMessages() to iterate over m_queue.
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std::exchange(m_queue, { });
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}
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void NetworkSendQueue::processMessages()
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{
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while (!m_queue.isEmpty()) {
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bool shouldStopProcessing = false;
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switchOn(m_queue.first(), [this](const CString& utf8) {
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m_writeString(utf8);
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}, [this](Ref<SharedBuffer>& data) {
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data->forEachSegment(m_writeRawData);
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}, [this, &shouldStopProcessing](UniqueRef<BlobLoader>& loader) {
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auto errorCode = loader->errorCode();
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if (loader->isLoading() || (errorCode && errorCode.value() == AbortError)) {
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shouldStopProcessing = true;
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return;
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}
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if (const auto& result = loader->arrayBufferResult()) {
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m_writeRawData(Span { static_cast<const uint8_t*>(result->data()), result->byteLength() });
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return;
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}
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ASSERT(errorCode);
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shouldStopProcessing = m_processError(errorCode.value()) == Continue::No;
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});
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if (shouldStopProcessing)
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return;
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m_queue.removeFirst();
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}
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}
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} // namespace WebCore
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