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/******************************************************************************
*
* package: Log4Qt
* file: classlogger.h
* created: September 2007
* author: Martin Heinrich
*
*
* changes: Sep 2008, Martin Heinrich:
* - Replaced usage of q_atomic_test_and_set_ptr with
* QAtomicPointer
*
*
* Copyright 2007 - 2008 Martin Heinrich
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#ifndef LOG4QT_CLASSLOGGER_H
#define LOG4QT_CLASSLOGGER_H
#include "../log4qtshared.h"
/******************************************************************************
* Dependencies
******************************************************************************/
#include <QtCore/QObject>
#if QT_VERSION >= QT_VERSION_CHECK(4, 4, 0)
# include <QtCore/QAtomicPointer>
# ifndef Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
# warning "QAtomicPointer test and set is not native. The class Log4Qt::ClassLogger is not thread-safe."
# endif
#endif
/******************************************************************************
* Declarations
******************************************************************************/
namespace Log4Qt
{
class Logger;
/*!
* \brief The class ClassLogger provides logging for a QObject derived
* class.
*
* The class ClassLogger provides a logger for a specified QObject derived
* object. It is used by \ref LOG4QT_DECLARE_QCLASS_LOGGER to implement the
* member functions provided by the macro.
*
* \note All the functions declared in this class are thread-safe.
*
* \sa LOG4QT_DECLARE_QCLASS_LOGGER
*/
class LOG4QT_EXPORT ClassLogger
{
public:
/*!
* Creates a ClassLogger object.
*/
ClassLogger();
// ~ClassLogger(); // Use compiler default
// ClassLogger(const ClassLogger &rOther); // Use compiler default
// ClassLogger &operator=(const ClassLogger &rOther); // Use compiler default
/*!
* Returns a pointer to a Logger named after the class of the object
* \a pObject.
*
* On the first invocation the Logger is requested by a call to
* LogManager::logger(const char *pName). The pointer is stored to be
* returned on subsequent invocations.
*
* \sa LogManager::logger(const char *pName)
*/
Logger *logger(const QObject *pObject);
private:
#if QT_VERSION < QT_VERSION_CHECK(4, 4, 0)
volatile Logger *mpLogger;
#else
mutable QAtomicPointer<Logger> mpLogger;
#endif
};
/******************************************************************************
* Operators, Helper
******************************************************************************/
/**************************************************************************
* Inline
**************************************************************************/
} // namespace Log4Qt
// Q_DECLARE_TYPEinfo(Log4Qt::ClassLogger, Q_COMPLEX_TYPE); // Use default
#endif // LOG4QT_CLASSLOGGER_H
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