Turn DocumentParser::pinToMainThread into a cleaner api

Source/core/html/parser/HTMLDocumentParser.h

 /*
  * Copyright (C) 2010 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 22 matching lines @@
 #include "core/html/parser/BackgroundHTMLInputStream.h"
 #include "core/html/parser/CompactHTMLToken.h"
 #include "core/html/parser/HTMLInputStream.h"
 #include "core/html/parser/HTMLParserOptions.h"
 #include "core/html/parser/HTMLPreloadScanner.h"
 #include "core/html/parser/HTMLScriptRunnerHost.h"
 #include "core/html/parser/HTMLSourceTracker.h"
 #include "core/html/parser/HTMLToken.h"
 #include "core/html/parser/HTMLTokenizer.h"
 #include "core/html/parser/HTMLTreeBuilderSimulator.h"
+#include "core/html/parser/ParserSynchronizationPolicy.h"
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/html/parser/XSSAuditor.h"
 #include "core/html/parser/XSSAuditorDelegate.h"
 #include "platform/text/SegmentedString.h"
 #include "wtf/Deque.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/WeakPtr.h"
 #include "wtf/text/TextPosition.h"
 
 namespace blink {
 
 class BackgroundHTMLParser;
 class CompactHTMLToken;
 class Document;
 class DocumentEncodingData;
 class DocumentFragment;
 class HTMLDocument;
 class HTMLParserScheduler;
 class HTMLScriptRunner;
 class HTMLTreeBuilder;
 class HTMLResourcePreloader;
 
 class PumpSession;
 
 class HTMLDocumentParser :  public ScriptableDocumentParser, private HTMLScriptRunnerHost {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLDocumentParser);
 public:
-    static PassRefPtrWillBeRawPtr<HTMLDocumentParser> create(HTMLDocument& document, bool reportErrors)
+    static PassRefPtrWillBeRawPtr<HTMLDocumentParser> create(HTMLDocument& document, bool reportErrors, ParserSynchronizationPolicy backgroundParsingPolicy)
     {
-        return adoptRefWillBeNoop(new HTMLDocumentParser(document, reportErrors));
+        return adoptRefWillBeNoop(new HTMLDocumentParser(document, reportErrors, backgroundParsingPolicy));
     }
     virtual ~HTMLDocumentParser();
     virtual void trace(Visitor*) override;
 
     // Exposed for HTMLParserScheduler
     void resumeParsingAfterYield();
 
     static void parseDocumentFragment(const String&, DocumentFragment*, Element* contextElement, ParserContentPolicy = AllowScriptingContent);
 
     HTMLTokenizer* tokenizer() const { return m_tokenizer.get(); }
@@ skipping 21 matching lines @@
     virtual void flush() override final;
     virtual void setDecoder(PassOwnPtr<TextResourceDecoder>) override final;
 
     UseCounter* useCounter() { return UseCounter::getFrom(contextForParsingSession()); }
 
 protected:
     virtual void insert(const SegmentedString&) override final;
     virtual void append(PassRefPtr<StringImpl>) override;
     virtual void finish() override final;
 
-    HTMLDocumentParser(HTMLDocument&, bool reportErrors);
+    HTMLDocumentParser(HTMLDocument&, bool reportErrors, ParserSynchronizationPolicy);
     HTMLDocumentParser(DocumentFragment*, Element* contextElement, ParserContentPolicy);
 
     HTMLTreeBuilder* treeBuilder() const { return m_treeBuilder.get(); }
 
     void forcePlaintextForTextDocument();
 
 private:
     static PassRefPtrWillBeRawPtr<HTMLDocumentParser> create(DocumentFragment* fragment, Element* contextElement, ParserContentPolicy parserContentPolicy)
     {
         return adoptRefWillBeNoop(new HTMLDocumentParser(fragment, contextElement, parserContentPolicy));
     }
 
     // DocumentParser
-    virtual void pinToMainThread() override final;
     virtual void detach() override final;
     virtual bool hasInsertionPoint() override final;
     virtual bool processingData() const override final;
     virtual void prepareToStopParsing() override final;
     virtual void stopParsing() override final;
     virtual bool isWaitingForScripts() const override final;
     virtual bool isExecutingScript() const override final;
     virtual void executeScriptsWaitingForResources() override final;
 
     // HTMLScriptRunnerHost
@@ skipping 18 matching lines @@
     void constructTreeFromCompactHTMLToken(const CompactHTMLToken&);
 
     void runScriptsForPausedTreeBuilder();
     void resumeParsingAfterScriptExecution();
 
     void attemptToEnd();
     void endIfDelayed();
     void attemptToRunDeferredScriptsAndEnd();
     void end();
 
-    bool shouldUseThreading() const { return !m_isPinnedToMainThread; }
+    bool shouldUseThreading() const { return m_shouldUseThreading; }
 
     bool isParsingFragment() const;
     bool isScheduledForResume() const;
     bool inPumpSession() const { return m_pumpSessionNestingLevel > 0; }
     bool shouldDelayEnd() const { return inPumpSession() || isWaitingForScripts() || isScheduledForResume() || isExecutingScript(); }
 
     HTMLToken& token() { return *m_token; }
 
     HTMLParserOptions m_options;
     HTMLInputStream m_input;
@@ skipping 11 matching lines @@
     XSSAuditorDelegate m_xssAuditorDelegate;
 
     // FIXME: m_lastChunkBeforeScript, m_tokenizer, m_token, and m_input should be combined into a single state object
     // so they can be set and cleared together and passed between threads together.
     OwnPtr<ParsedChunk> m_lastChunkBeforeScript;
     Deque<OwnPtr<ParsedChunk>> m_speculations;
     WeakPtrFactory<HTMLDocumentParser> m_weakFactory;
     WeakPtr<BackgroundHTMLParser> m_backgroundParser;
     OwnPtrWillBeMember<HTMLResourcePreloader> m_preloader;
 
-    bool m_isPinnedToMainThread;
+    bool m_shouldUseThreading;
     bool m_endWasDelayed;
     bool m_haveBackgroundParser;
     bool m_tasksWereSuspended;
     unsigned m_pumpSessionNestingLevel;
     unsigned m_pumpSpeculationsSessionNestingLevel;
 };
 
 }
 
 #endif