80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
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/******************************************************************************
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*
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* This file is part of Log4Qt library.
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*
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* Copyright (C) 2007 - 2020 Log4Qt contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#ifndef LOG4QT_MDC_H
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#define LOG4QT_MDC_H
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#include "log4qt.h"
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#include <QString>
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#include <QHash>
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#include <QThreadStorage>
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namespace Log4Qt
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{
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/*!
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* \brief The class MDC implements a mapped diagnostic context.
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*
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* \note All the functions declared in this class are thread-safe.
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*/
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class LOG4QT_EXPORT MDC
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{
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private:
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MDC();
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Q_DISABLE_COPY(MDC)
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public:
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static QString get(const QString &key);
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static QHash<QString, QString> context();
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/*!
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* Returns the MDC instance.
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*/
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static MDC *instance();
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static void put(const QString &key, const QString &value);
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static void remove(const QString &key);
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private:
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static QHash<QString, QString> *localData();
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private:
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QThreadStorage<QHash<QString, QString> *> mHash;
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};
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inline MDC::MDC()
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{}
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inline void MDC::put(const QString &key, const QString &value)
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{
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localData()->insert(key, value);
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}
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inline void MDC::remove(const QString &key)
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{
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localData()->remove(key);
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}
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} // namespace Log4Qt
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#endif // LOG4QT_MDC_H
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