forked from qt-creator/qt-creator
169556db2f
Fix use-after-free for the following case:
1. Open an editor
2. Trigger a long processing completion
(e.g. simulate with QThread::msleep in
CppCompletionAssistInterface::getCppSpecifics)
3. ...and immediately close the editor (e.g. with Ctrl+W)
4. Wait until it crashes.
The completion thread relied on the BuiltinEditorDocumentParser object,
which is deleted once the editor is closed. Fixed by sharing the
ownership of that object between the *EditorDocumentProcessor and the
completion assist interface.
This case came up when doing tests for the bug report below.
Task-number: QTCREATORBUG-14991
Change-Id: I0b009229e68fc6b7838740858cdc41a32403fe6f
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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**
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** In addition, as a special exception, The Qt Company gives you certain additional
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#ifndef BASEEDITORDOCUMENTPARSER_H
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#define BASEEDITORDOCUMENTPARSER_H
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#include "cppmodelmanager.h"
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#include "cpptools_global.h"
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#include "cppworkingcopy.h"
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#include <QObject>
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namespace CppTools {
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class CPPTOOLS_EXPORT BaseEditorDocumentParser : public QObject
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{
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Q_OBJECT
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public:
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using Ptr = QSharedPointer<BaseEditorDocumentParser>;;
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static Ptr get(const QString &filePath);
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struct Configuration {
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bool stickToPreviousProjectPart = true;
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bool usePrecompiledHeaders = false;
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QByteArray editorDefines;
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ProjectPart::Ptr manuallySetProjectPart;
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};
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public:
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BaseEditorDocumentParser(const QString &filePath);
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virtual ~BaseEditorDocumentParser();
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QString filePath() const;
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Configuration configuration() const;
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void setConfiguration(const Configuration &configuration);
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struct CPPTOOLS_EXPORT InMemoryInfo {
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InMemoryInfo(bool withModifiedFiles);
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WorkingCopy workingCopy;
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Utils::FileNameList modifiedFiles;
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};
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void update(const InMemoryInfo &info);
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ProjectPart::Ptr projectPart() const;
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protected:
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struct State {
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QByteArray editorDefines;
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ProjectPart::Ptr projectPart;
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};
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State state() const;
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void setState(const State &state);
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static ProjectPart::Ptr determineProjectPart(const QString &filePath,
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const Configuration &config,
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const State &state);
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mutable QMutex m_stateAndConfigurationMutex;
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private:
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virtual void updateHelper(const InMemoryInfo &inMemoryInfo) = 0;
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const QString m_filePath;
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Configuration m_configuration;
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State m_state;
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mutable QMutex m_updateIsRunning;
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};
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} // namespace CppTools
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#endif // BASEEDITORDOCUMENTPARSER_H
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