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61a2a00c78
This CL plumbs the data pipe from the network stack all the way to the parser thread. We now drain the data pipe on the parser thread, which means network bytes don't need to transit the main thread to reach the parser. R=eseidel@chromium.org Review URL: https://codereview.chromium.org/664573004
153 lines
5.1 KiB
C++
153 lines
5.1 KiB
C++
/*
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* Copyright (C) 2010 Google, 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. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef HTMLDocumentParser_h
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#define HTMLDocumentParser_h
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#include "base/memory/weak_ptr.h"
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#include "core/dom/DecodedDataDocumentParser.h"
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#include "core/fetch/ResourceClient.h"
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#include "core/frame/UseCounter.h"
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#include "core/html/parser/CompactHTMLToken.h"
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#include "core/html/parser/HTMLInputStream.h"
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#include "core/html/parser/HTMLParserOptions.h"
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#include "core/html/parser/HTMLScriptRunner.h"
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#include "core/html/parser/HTMLToken.h"
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#include "core/html/parser/HTMLTokenizer.h"
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#include "core/html/parser/TextResourceDecoder.h"
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#include "platform/text/SegmentedString.h"
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#include "wtf/Deque.h"
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#include "wtf/OwnPtr.h"
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#include "wtf/WeakPtr.h"
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#include "wtf/text/TextPosition.h"
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namespace blink {
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class BackgroundHTMLParser;
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class CompactHTMLToken;
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class Document;
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class Element;
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class HTMLDocument;
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class HTMLParserScheduler;
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class HTMLTreeBuilder;
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class ScriptController;
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class ScriptSourceCode;
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class PumpSession;
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class HTMLDocumentParser : public DecodedDataDocumentParser {
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WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
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WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLDocumentParser);
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public:
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static PassRefPtrWillBeRawPtr<HTMLDocumentParser> create(HTMLDocument& document, bool reportErrors)
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{
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return adoptRefWillBeNoop(new HTMLDocumentParser(document, reportErrors));
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}
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virtual ~HTMLDocumentParser();
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void parse(mojo::ScopedDataPipeConsumerHandle) override;
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virtual void trace(Visitor*) override;
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// Exposed for HTMLParserScheduler
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void resumeParsingAfterYield();
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TextPosition textPosition() const;
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OrdinalNumber lineNumber() const;
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struct ParsedChunk {
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OwnPtr<CompactHTMLTokenStream> tokens;
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};
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void didReceiveParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>);
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bool isWaitingForScripts() const;
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bool isExecutingScript() const;
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void executeScriptsWaitingForResources();
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UseCounter* useCounter() { return UseCounter::getFrom(contextForParsingSession()); }
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private:
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HTMLDocumentParser(HTMLDocument&, bool reportErrors);
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HTMLTreeBuilder* treeBuilder() const { return m_treeBuilder.get(); }
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virtual HTMLDocumentParser* asHTMLDocumentParser() override final { return this; }
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// DocumentParser
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virtual void detach() override final;
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virtual bool processingData() const override final;
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virtual void prepareToStopParsing() override final;
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virtual void stopParsing() override final;
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bool hasInsertionPoint();
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void startBackgroundParser();
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void stopBackgroundParser();
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void validateSpeculations(PassOwnPtr<ParsedChunk> lastChunk);
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void processParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk>);
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void pumpPendingSpeculations();
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Document* contextForParsingSession();
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void constructTreeFromHTMLToken(HTMLToken&);
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void constructTreeFromCompactHTMLToken(const CompactHTMLToken&);
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void runScriptsForPausedTreeBuilder();
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void resumeParsingAfterScriptExecution();
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void attemptToEnd();
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void endIfDelayed();
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void end();
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bool shouldUseThreading() const { return m_options.useThreading; }
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bool isParsingFragment() const;
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bool isScheduledForResume() const;
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bool inPumpSession() const { return m_pumpSessionNestingLevel > 0; }
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bool shouldDelayEnd() const { return inPumpSession() || isWaitingForScripts() || isScheduledForResume() || isExecutingScript(); }
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HTMLParserOptions m_options;
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OwnPtrWillBeMember<HTMLTreeBuilder> m_treeBuilder;
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OwnPtr<HTMLParserScheduler> m_parserScheduler;
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TextPosition m_textPosition;
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HTMLScriptRunner m_scriptRunner;
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OwnPtr<ParsedChunk> m_lastChunkBeforeScript;
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Deque<OwnPtr<ParsedChunk> > m_speculations;
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WeakPtrFactory<HTMLDocumentParser> m_weakFactory;
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base::WeakPtr<BackgroundHTMLParser> m_backgroundParser;
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bool m_isFragment;
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bool m_endWasDelayed;
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bool m_haveBackgroundParser;
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unsigned m_pumpSessionNestingLevel;
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};
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}
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#endif
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