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Log4Qt - Logging for the Qt cross-platform application framework

License: Apache License 2.0

QMake 1.51% C++ 93.13% C 0.21% CMake 3.62% QML 1.52%

qt-framework logging log4qt qt5 qmake logging-library cpp11 cpp cmake qbs

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log4qt's Issues

How to ensure log write to file on disk?

I use DailyFileAppender to write log, but when my program crashed or something broken, it can't see the latest log in file after restart program or reboot.(here is embedded Linux).

The WriteAppender use QTextStream::flush when immediateFlush is true, but it seems that it just only write it's internal buffer to filesystem.

Is there any something like QSaveFile which commit() save data to file? In fact, it call native sync method, which call fsync in linux.

Thanks in advance.

removeAppender must cause deadlock

void AppenderAttachable::removeAppender(const QString &name)
{
QWriteLocker locker(&mAppenderGuard); // it must be removed!
AppenderSharedPtr pAppender = appender(name);
if (pAppender)
removeAppender(pAppender);
}

How can I log async and remotely ?

Is there any way to log async and remotely with Log4QT?

Warnings when compiled for ARM

The following warnings are visible while compiling with android_armv7:
In file included from C:\Qt\5.6\android_armv7\include/QtCore/qhash.h:40:0,
from C:\Qt\5.6\android_armv7\include/QtCore/qshareddata.h:40,
from C:\Qt\5.6\android_armv7\include\QtCore/qsharedpointer.h:39,
from C:\Qt\5.6\android_armv7\include\QtCore/QSharedPointer:1,
from ......\Log4Qt\src\log4qt\log4qtsharedptr.h:4,
from ......\Log4Qt\src\log4qt\layout.h:29,
from ......\Log4Qt\src\log4qt\appender.h:28,
from ......\Log4Qt\src\log4qt\appenderskeleton.h:28,
from ......\Log4Qt\src\log4qt\appenderskeleton.cpp:25:
C:\Qt\5.6\android_armv7\include/QtCore/qlist.h: In instantiation of 'void QList::node_copy(QList::Node*, QList::Node*, QList::Node*) [with T = QVariant]':
C:\Qt\5.6\android_armv7\include/QtCore/qlist.h:805:58: required from 'QList::QList(const QList&) [with T = QVariant]'
......\Log4Qt\src\log4qt\helpers/logerror.h:498:12: required from here
C:\Qt\5.6\android_armv7\include/QtCore/qlist.h:465:17: warning: cast from 'QList::Node*' to 'QVariant*' increases required alignment of target type [-Wcast-align]
new (current) T(reinterpret_cast<T>(src));

Check the following thread for more info: https://groups.google.com/forum/#!topic/qt-project-list-development/CGZlE5o5Bic

I am using the following patch as a workaround (g++.pri):
win32 {
NORMAL_CXXFLAGS += -Wcast-align
}

Full build log:
build.txt

Regards,
ThE-MaRaC

release version log4qt Memory leak(OS:Windows)

The released project occupies more memory with the increase of logs，and not released.
The more debug or error log info taked ,the more memory will be occupied, but there is no phenomenon in the debug version.

Set %F %M %L in properties file, but it can't work in windows

I use Log4Qt-master code,and build in Qt 5.7.0.I set proterty through protpery file.I set " log4j.appender.daily.layout=org.apache.log4j.PatternLayout" and "log4j.appender.daily.layout.ConversionPattern=[%d{yyyy-MM-dd HH:mm:ss}] [%F:%M:%L] %-5p [%c] - %m%n".But Output result is "[2018-11-14 12:20:08] [::-1] INFO [daily] - Test1",file name,method,line num are wrong.

1.5.0、1.5.1、1.5.2 These three version all reported errors when using static libraries.

Qt5.14 installed win10
The compiler is mingw32
all reported errors when using static libraries，please test！
1.4.2 is succeed!

%M%F%L in properties file work wrong

My env : log4qt-master, Qt 5.9.4, linux
My log4qt.properties:
logpath=./logs

log4j.reset=true
log4j.Debug=WARN
log4j.threshold=NULL
log4j.handleQtMessages=true
log4j.watchThisFile=false

log4j.rootLogger=ALL, daily

log4j.appender.daily=org.apache.log4j.DailyFileAppender
log4j.appender.daily.file=${logpath}/emb.log
log4j.appender.daily.appendFile=true
log4j.appender.daily.datePattern=_yyyy-MM-dd
log4j.appender.daily.keepDays=7
log4j.appender.daily.layout=org.apache.log4j.PatternLayout
log4j.appender.daily.layout.conversionPattern=%d{yyyy-MM-dd hh:mm:ss.zzz} [%p]<%c> (%t)%F:%L%n %M: %m%n

My output: emb_2017-08-05.log:
2017-08-05 17:32:03.050 [DEBUG] (0x000000001b798e90):0
: ModbusThread mbStart
2017-08-05 17:32:05.550 [DEBUG] (0x000000001b798e90):0
: showWorkFile

My app.pro has DEFINES += QT_MESSAGELOGCONTEXT
and log with qCDebug(embApp) << msg; or qDebug() << msg; in my source file.

How can i fix it?

Log4Qt-1.5.1\src\log4qt\ttcclayout.h:118, enum DateFormat has errors

The source code is written this:
enum DateFormat { /*! The none date format string is "NONE". */ NONE, /*! * The iso8601 date format string is "ISO8601". The date will be * formatted as yyyy-MM-dd hh:mm:ss.zzz. */ ISO8601, /*! * The absolute date format string is "ABSOLUTE". The date will be * formatted as HH:mm:ss.zzz. */ ABSOLUTE, /*! * The date date format string is "DATE". The date will be formatted * as MMM YYYY HH:mm:ss.zzz. */ DATE, /*! * The relative date format string is "RELATIVE". The date will be * formatted as milliseconds since start of the program. */ RELATIVE };
My programming environment is Windows, here the DateFormat enumeration values ABSOLUTE and RELATIVE will conflict with the Windows header files, for example
C: \ Program Files (x86) \ Windows Kits \ 10 \ Include \ 10.0.17763.0 \ um \ wingdi.h: 1903
/ * Coordinate Modes * /
#define ABSOLUTE 1
#define RELATIVE 2

I recommend changing the name of the DateFormat enum variable to something else.

log4qt/log4qtshared file not found

I had build and install log4qt as a shared library either in Ubuntu 18.04 and in IOs 10.14
in both enviroments I get successfull to link the dynamic library . The only one issue is that when I build my project I get an error 'log4qt/log4qtshared.h' in logerror.h file not found

y

why log4qt assert debug fail on windows?

i encountered the assert debug fail(heap allocate/free error) on windows platform when i link the static lib or dll, why this happens when i link the static lib?

compiling against Qt5.3 with msvc 19 error in v1.4.2

I'm trying to compile Log4Qt (v1.4.2 that you said is compatible down to Qt5.3) with msvc19 (2022) and for Qt5.3 but I will get a message regarding GCC?! below:
Log4Qt\src\log4qt\log4qt.h(484): fatal error C1189: #error: "Log4Qt requires at least gcc version 4.8 or higher for used c++11 features"
I don't get it what it have to do with GCC?

Library is not thread-safe with MSVC 2013

Since this commit Log4Qt heavily uses C++11's magic statics feature.

Since CI is testing the library with MSVC 2013, I was assuming that the C++11 features of this compiler are sufficient for using Log4Qt. However, this is not true: MSVC 2013 does not support "Magic statics", see https://msdn.microsoft.com/en-us/library/hh567368%28v=vs.120%29.aspx .

include in your project , The instructions seem incomplete

include in your project
Can also be used by adding the log4qt source directly to your Qt project file by adding the following line: include(/src/log4qt/log4qt.pri)
This doesn't seem to work, you still need to add build.pri and g++.pri,Is that right?

log4Qt cannot setEncoding

log4Qt version:1.5.0
writerappender.cpp

void WriterAppender::setEncoding(QTextCodec *encoding)
{
    QMutexLocker locker(&mObjectGuard);

    if (mEncoding == encoding)
        return;

    mEncoding = encoding;
    if (mWriter != nullptr)
    {
        if (mEncoding != nullptr)
            mWriter->setCodec(mEncoding);

        // Just annotate out this sentence
        mWriter->setCodec(QTextCodec::codecForLocale());
    }
}

Support static builds

Support static buils and linkage of the log4qt library in the pro files.

AppVeyor no longer provides support for the Qt5.14 build environment

After some investigation, I found that appveyor removed support for Qt 5.14.2 in an update on April 2, 2022, so there is no longer a compiled environment for Qt 5.14. You may need to synchronize and update the appveyor.yml file.

Reference.

Originally posted by @kuzzh in #72 (comment)

dailyfileappender.cpp,need add #include <QStringBuilder>

dailyfileappender.cpp,need add #include < QStringBuilder >

QString DailyFileAppender::appendDateToFilename() const { QFileInfo fi(mOriginalFilename); return fi.absolutePath() % QStringLiteral("/") % fi.baseName() % mLastDate.toString(mDatePattern) % QStringLiteral(".") % fi.completeSuffix(); }

Because "%" is an overloaded operator, if the source file does not include this header file #include < QStringBuilder >, it will conflict with "%" overloaded operators of other third-party libraries.

Once a AppenderSkeleton called close(),it can't be opened any more.

In AppenderSkeleton::closeInternal(), set mIsClosed to true, and set mIsActive to false.
But in AppenderSkeleton::activateOptions(), it only set mIsActive to true.
Is there have some special reason?
I want to close a FileAppender, at sometime reactivate it, the mIsClosed block my way.

Add support for xml config file format

It would be nice to support xml config file format described here: https://wiki.apache.org/logging-log4j/Log4jXmlFormat

Log4Qt impacted by log4j vulnerability?

Hi, wondering if log4qt is vulnerable because of the new log4j vulnerability?

How do you handle Obsolete Qt Calls

For example, in file systemlogappender.cpp line 163, you have for (const auto &line : message.split('\n', QString::SkipEmptyParts)), QString::SkipEmptyParts is Obsoleted as of 5.15 at least, and replaced with Qt::SkipEmptyParts, normally I would handle it like:

#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // Set to lowest version required
    for (const auto &line : message.split('\n', Qt::SkipEmptyParts))
#else
    for (const auto &line : message.split('\n', QString::SkipEmptyParts))
#endif

Thanks, Flesh

log missing

OS: win10
qt 5.10.0
c++11
Using logDailyFile ,during a long run, the log suddenly stops recording, but the software runs normally ,error judgments were seen in the code and no error records were found in the log .
must multithreading use mainThreadappender ?mainThreadappender whether scrolling by log can be set ?

Failed build with MXE cross compiler (Mingw)

I've tried to build the library and the examples with the MXE cross compiler on Debian 8. While the library is build without problems, the examples and the test application can't be built. The linking process aborts with unresolved externals. I've put the (stripped down) output of the build into a gist.

https://gist.github.com/joede/279e36de061c422b5dcf097e307d2581

There is a bug in log4qt.pro. The inclusion of g++.pri uses the wrong path. It should be ../../g++.pri. Fixing the path leads to the same linking errors.

MXE uses g++ 4.9.3 and Qt 5.5.1!

Building log4qt on Debian 8 itself works very well and the test application finish without any failures. Debian 8 comes with g++ 4.9.2 and Qt 5.3!

memory leak in windows? The more debug log info taked ,the more memory will be occupied

i have a problem when using log4qt in windows,
The more debug or error log info taked ,the more memory will be occupied.
is there any memory leak in windows? i just did a simple test by qtcreator project，using log4qt version 1.5.0

let me show the picture when running the test for one hour, the memory occupied from 6M to 456M

my log config is:
log4j.rootLogger=DEBUG,daily,console

log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%-d [%t] %-5p: %m%n
log4j.appender.logfile.File=./log/uiTest.log
log4j.appender.logfile.ImmediateFlush=FALSE
log4j.appender.logfile.Threshold=DEBUG
log4j.appender.logfile.AppendFile=TRUE

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-d [%t] %-5p: %m%n

log4j.appender.daily=org.apache.log4j.DailyFileAppender
log4j.appender.daily.file=./log/uiTest.log
log4j.appender.daily.appendFile=true
log4j.appender.daily.datePattern=_yyyy_MM_dd
#log4j.appender.daily.keepDays=90
log4j.appender.daily.layout=${log4j.appender.console.layout}
#log4j.appender.daily.layout.dateFormat=${log4j.appender.console.layout.dateFormat}

log4j.appender.daily.layout.ConversionPattern=%-d [%t] %-5p: %m%n
#log4j.appender.daily.layout.contextPrinting=${log4j.appender.console.layout.contextPrinting}

my test example is like this:

`void MainWindow::on_pushButton_clicked()
{
ui->pushButton->setEnabled(false);
QFuture future = QtConcurrent::run(&
{
int count = 0;
while(1)
{
QMutex mutex;
QMutexLocker locker(&mutex);
logger->info("&&&&&on_pushButton_clicked&&&&&&&",FILE,FUNCTION,QString::number(LINE));
QThread::msleep(5);
count++;
}
});
}

void MainWindow::on_pushButton_2_clicked()
{
ui->pushButton_2->setEnabled(false);
QFuture future = QtConcurrent::run(&
{
int count = 0;
while(1)
{
QMutex mutex;
QMutexLocker locker(&mutex);
logger->info("&&&&&on_pushButton_2_clicked&&&&&&&",FILE,FUNCTION,QString::number(LINE));
QThread::msleep(5);
count++;
}
});
}`

Wrong installation directories

I use /usr/bin/qmake from Linux Mint distribution.
Commands qmake; make; make install do install to catalogs /lib and /include.
It should be installed to /usr/lib and /usr/include.

Log from installation:

jacek@kaczorek:~/Projekty/Qt/Log4Qt$ sudo make install cd src/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/src/src.pro ) && make -f Makefile install make[1]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/src' cd log4qt/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/log4qt.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/src/log4qt' /usr/lib/qt5/bin/qmake -install qinstall -exe ../../bin/liblog4qt.so.1.0.0 /lib/liblog4qt.so.1.0.0 strip --strip-unneeded /lib/liblog4qt.so.1.0.0 ln -f -s liblog4qt.so.1.0.0 /lib/liblog4qt.so ln -f -s liblog4qt.so.1.0.0 /lib/liblog4qt.so.1 ln -f -s liblog4qt.so.1.0.0 /lib/liblog4qt.so.1.0 /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/appender.h /include/log4qt/appender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/appenderskeleton.h /include/log4qt/appenderskeleton.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/asyncappender.h /include/log4qt/asyncappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/basicconfigurator.h /include/log4qt/basicconfigurator.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binaryfileappender.h /include/log4qt/binaryfileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binarylayout.h /include/log4qt/binarylayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binarylogger.h /include/log4qt/binarylogger.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binaryloggingevent.h /include/log4qt/binaryloggingevent.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binarylogstream.h /include/log4qt/binarylogstream.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binarytotextlayout.h /include/log4qt/binarytotextlayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/binarywriterappender.h /include/log4qt/binarywriterappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/consoleappender.h /include/log4qt/consoleappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/dailyfileappender.h /include/log4qt/dailyfileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/dailyrollingfileappender.h /include/log4qt/dailyrollingfileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/fileappender.h /include/log4qt/fileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/hierarchy.h /include/log4qt/hierarchy.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/layout.h /include/log4qt/layout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/level.h /include/log4qt/level.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/log4qt.h /include/log4qt/log4qt.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/log4qtshared.h /include/log4qt/log4qtshared.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/log4qtsharedptr.h /include/log4qt/log4qtsharedptr.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/logger.h /include/log4qt/logger.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/loggerrepository.h /include/log4qt/loggerrepository.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/loggingevent.h /include/log4qt/loggingevent.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/logmanager.h /include/log4qt/logmanager.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/logstream.h /include/log4qt/logstream.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/mainthreadappender.h /include/log4qt/mainthreadappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/mdc.h /include/log4qt/mdc.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/ndc.h /include/log4qt/ndc.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/patternlayout.h /include/log4qt/patternlayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/propertyconfigurator.h /include/log4qt/propertyconfigurator.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/qmllogger.h /include/log4qt/qmllogger.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/rollingbinaryfileappender.h /include/log4qt/rollingbinaryfileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/rollingfileappender.h /include/log4qt/rollingfileappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/signalappender.h /include/log4qt/signalappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/simplelayout.h /include/log4qt/simplelayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/simpletimelayout.h /include/log4qt/simpletimelayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/systemlogappender.h /include/log4qt/systemlogappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/ttcclayout.h /include/log4qt/ttcclayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/writerappender.h /include/log4qt/writerappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/xmllayout.h /include/log4qt/xmllayout.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/telnetappender.h /include/log4qt/telnetappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/appenderattachable.h /include/log4qt/helpers/appenderattachable.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/binaryclasslogger.h /include/log4qt/helpers/binaryclasslogger.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/classlogger.h /include/log4qt/helpers/classlogger.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/configuratorhelper.h /include/log4qt/helpers/configuratorhelper.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/datetime.h /include/log4qt/helpers/datetime.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/dispatcher.h /include/log4qt/helpers/dispatcher.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/factory.h /include/log4qt/helpers/factory.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/initialisationhelper.h /include/log4qt/helpers/initialisationhelper.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/logerror.h /include/log4qt/helpers/logerror.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/optionconverter.h /include/log4qt/helpers/optionconverter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/patternformatter.h /include/log4qt/helpers/patternformatter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/helpers/properties.h /include/log4qt/helpers/properties.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/spi/filter.h /include/log4qt/spi/filter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/binaryeventfilter.h /include/log4qt/varia/binaryeventfilter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/debugappender.h /include/log4qt/varia/debugappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/denyallfilter.h /include/log4qt/varia/denyallfilter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/levelmatchfilter.h /include/log4qt/varia/levelmatchfilter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/levelrangefilter.h /include/log4qt/varia/levelrangefilter.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/listappender.h /include/log4qt/varia/listappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/nullappender.h /include/log4qt/varia/nullappender.h /usr/lib/qt5/bin/qmake -install qinstall /home/jacek/Projekty/Qt/Log4Qt/src/log4qt/varia/stringmatchfilter.h /include/log4qt/varia/stringmatchfilter.h make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/src/log4qt' make[1]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/src' cd tests/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/tests/tests.pro ) && make -f Makefile install make[1]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/tests' cd log4qttest/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/tests/log4qttest/log4qttest.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/tests/log4qttest' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/tests/log4qttest' cd binaryloggertest/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/tests/binaryloggertest/binaryloggertest.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/tests/binaryloggertest' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/tests/binaryloggertest' cd dailyfileappendertest/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/tests/dailyfileappendertest/dailyfileappendertest.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/tests/dailyfileappendertest' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/tests/dailyfileappendertest' cd filewatcher/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/tests/filewatcher/filewatcher.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/tests/filewatcher' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/tests/filewatcher' make[1]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/tests' cd examples/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/examples/examples.pro ) && make -f Makefile install make[1]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/examples' cd basic/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/examples/basic/basic.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/examples/basic' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/examples/basic' cd propertyconfigurator/ && ( test -e Makefile || /usr/lib/qt5/bin/qmake -o Makefile /home/jacek/Projekty/Qt/Log4Qt/examples/propertyconfigurator/propertyconfigurator.pro ) && make -f Makefile install make[2]: Entering directory '/home/jacek/Projekty/Qt/Log4Qt/examples/propertyconfigurator' make[2]: Nothing to be done for 'install'. make[2]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/examples/propertyconfigurator' make[1]: Leaving directory '/home/jacek/Projekty/Qt/Log4Qt/examples'

when log4qtd is lanuched in debug mode，exception will occurred

qt 5.12.6

demo url: https://github.com/jk553633/Log4qtDemo

1 QVariant::QVariant 2 QVariant::QVariant 3 Log4Qt::operator<< 4 QtMetaTypePrivate: 5 QVariant::QVariant 6 qt_plugin_instance 7 qt_plugin_instance 8 qt_plugin_instance 9 qt_plugin_instance 10 qt_plugin_instance 11 qt_plugin_instance 12 QVariant::QVariant 13 QVariant::QVariant 14 QVariant::QVariant 15 qt_plugin_instance 16 qt_plugin_instance 17 qt_plugin_instance 18 qt_plugin_instance 19 qt_plugin_instance 20 qt_plugin_instance ... <更多> Qt5Cored 0x7ffd6026b95d
Qt5Cored 0x7ffd60455d11
logerror.cpp 166 0x7ffdae19bdbc
:QMetaTypeFunctionHelperLog4Qt::LogError,1::Save qmetatype.h 811 0x7ffdae19ab6d
Qt5Cored 0x7ffd606cd30a
qmldbg_debuggerd 0x7ffdacc9b493
qmldbg_debuggerd 0x7ffdacc99997
qmldbg_debuggerd 0x7ffdacc98149
qmldbg_debuggerd 0x7ffdacca11e9
qmldbg_debuggerd 0x7ffdacc9cda7
qmldbg_debuggerd 0x7ffdacca33ce
Qt5Cored 0x7ffd606ca968
Qt5Cored 0x7ffd607089de
Qt5Cored 0x7ffd60708288
qmldbg_debuggerd 0x7ffdacca6de4
qmldbg_debuggerd 0x7ffdacca739a
qmldbg_debuggerd 0x7ffdacca6ec3
qmldbg_debuggerd 0x7ffdacca6a6c
qmldbg_debuggerd 0x7ffdacc976d7
qmldbg_debuggerd 0x7ffdacca125e

logerror.h line 158
#ifndef QT_NO_DATASTREAM
QDataStream &operator<<(QDataStream &out,
const LogError &logError)
{
// version
quint16 version = 0;
out << version;
// version 0 data
out << logError.mCode
<< logError.mContext
<< logError.mMessage
<< logError.mSymbol
<< logError.mArgs
<< logError.mCausingErrors;

return out;

}

Exception Triggered

The inferior stopped because it triggered an exception.

Stopped in thread 0 by: Exception at 0x7ffd4c9ab95d, code: 0xc0000005: read access violation at: 0x4, flags=0x0 (first chance). --------------------------- OK ---------------------------

when log4qtd is lanuched in debug mode，exception will occurred at logerror.h line 166(out << logError.mCode).

log4Qt cannot output source file names, line numbers, function names, etc.

log4Qt version:1.5.1
My program:main.cpp

#include
#include
#include

#include <log4qt/consoleappender.h>
#include <log4qt/logger.h>
#include <log4qt/loggerrepository.h>
#include <log4qt/patternlayout.h>

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

Log4Qt::Logger *logger = Log4Qt::Logger::rootLogger();
Log4Qt::PatternLayout *layout = new Log4Qt::PatternLayout();
layout->setHeader("----- start -----");
layout->setFooter("----- end -----");
layout->setConversionPattern("%d{yyyy-MM-dd hh:mm:ss} [%p] %c{2} %M.%L %x - %m%n");
layout->activateOptions();

// ConsoleAppender
Log4Qt::ConsoleAppender *appender = new Log4Qt::ConsoleAppender(layout, 
Log4Qt::ConsoleAppender::STDOUT_TARGET);
appender->activateOptions();
logger->addAppender(appender);

logger->setLevel(Log4Qt::Level::DEBUG_INT);
logger->debug("Debug, Log4Qt!");
logger->info("Info, Log4Qt!");

//shutdown
logger->removeAllAppenders();
logger->loggerRepository()->shutdown();

return a.exec();

}

The results are as follows:
----- start -----
2020-03-24 21:08:14 [DEBUG] root .-1 - Debug, Log4Qt!
2020-03-24 21:08:14 [INFO] root .-1 - Info, Log4Qt!
----- end -----

I used "%M.%L", but log4Qt cannot output source file names, line numbers, function names, etc.
why?

Unable to write file

os: win10
qt:5.10.0
std:c++11
compiler:vs2015

Encapsulated as a singleton mode, in a multi-threaded environment, the use of DailyFileAppender mode, sometimes cannot write to the file and no error msg.