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kwin
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log: save qMessage to log file 

Signed-off-by: Hongfei Shang <shanghongfei@kylinos.cn>
This commit is contained in:
Hongfei Shang 2022-06-03 15:05:52 +08:00
parent 01bdf90e44
commit 032ae5debe
2 changed files with 217 additions and 0 deletions
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109
src/main_wayland.cpp
View File

@ -40,6 +40,8 @@
#include <QDebug>
#include <QWindow>
#include <QDBusInterface>
#include <QDir>
#include <QRegularExpression>
// system
#if HAVE_SYS_PRCTL_H
@ -58,6 +60,15 @@
#include <iostream>
#include <iomanip>
#if defined(QT_NO_DEBUG)
#define LOG_FILE_COUNT_MAX 2
#else
#define LOG_FILE_COUNT_MAX 4
#endif
#define LOG_FILE_SIZE_MAX 20*1024*1024
#define LOG_FILE_PREFIX "ukui_kwin"
#define LOG_FILE_PATH "/.log/"
Q_IMPORT_PLUGIN(KWinIntegrationPlugin)
Q_IMPORT_PLUGIN(KGlobalAccelImpl)
Q_IMPORT_PLUGIN(KWindowSystemKWinPlugin)
@ -360,8 +371,106 @@ void dropNiceCapability()
} // namespace
/*
* find next log file, and do some check.
*/
static int checkLogFile(int index) {
int logFileIndex = index;
for (size_t i = 0; i < LOG_FILE_COUNT_MAX; i++) {
logFileIndex = (logFileIndex + 1) % LOG_FILE_COUNT_MAX;
QString logFilePath = QDir::homePath() + LOG_FILE_PATH + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(logFileIndex);
if (!QFile::exists(logFilePath))
break;
QFile temp(logFilePath);
if (temp.size() < LOG_FILE_SIZE_MAX)
break;
if ((LOG_FILE_COUNT_MAX - 1) == i) {
// here is the next log file.
logFileIndex = (logFileIndex + 1) % LOG_FILE_COUNT_MAX;
QString nextLogFilePath = QDir::homePath() + LOG_FILE_PATH + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(logFileIndex);
// prepare rotate to next log file, so we should log some info in prev log file to make a better understanding.
FILE* tailFile = fopen(logFilePath.toLocal8Bit().constData(), "a+");
if (tailFile) {
fprintf(tailFile, "to be continue, please check:\r\n\t[%s]", nextLogFilePath.toStdString().c_str());
fclose(tailFile);
}
// and make next log file be clear
QFile nextLogFile(nextLogFilePath);
nextLogFile.remove();
}
}
return logFileIndex;
}
static void messageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
QByteArray localMsg = msg.toLocal8Bit();
QDateTime dateTime = QDateTime::currentDateTime();
QString strFormat = "yyMMdd hh:mm:ss.zzz";
QString strDateTime = dateTime.toString(strFormat);
FILE *log_file = nullptr;
QString logFilePath;
int fileSize;
static int currentLogFileIndex = -1;
QDir dir;
bool flag = 0;
logFilePath = QDir::homePath() + LOG_FILE_PATH;
if (dir.mkpath(logFilePath)) {
flag = 1;
}
if (flag) {
if (-1 == currentLogFileIndex)
currentLogFileIndex = checkLogFile(currentLogFileIndex);
logFilePath = logFilePath + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(currentLogFileIndex);
log_file = fopen(logFilePath.toLocal8Bit().constData(), "a+");
}
QString src = QString(context.file ? context.file : "").section('/', -1);
QRegularExpression re("(\\w([\\S]*?)[\\s]?)(\\()");
QRegularExpressionMatch match = re.match(context.function);
QString func = match.hasMatch() ? match.captured(1) : "";
QString exinfo = src.isEmpty() ? QString() : QStringLiteral("(%1:%2 %3)").arg(src).arg(context.line).arg(func);
switch (type) {
case QtDebugMsg:
if (!log_file) {
break;
}
fprintf(log_file, "Debug: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtInfoMsg:
fprintf(log_file? log_file: stdout, "Info: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtWarningMsg:
fprintf(log_file? log_file: stderr, "Warning: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtCriticalMsg:
fprintf(log_file? log_file: stderr, "Critical: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtFatalMsg:
fprintf(log_file? log_file: stderr, "Fatal: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
}
if (log_file) {
fileSize = ftell(log_file);
fclose(log_file);
if (fileSize >= LOG_FILE_SIZE_MAX)
currentLogFileIndex = checkLogFile(currentLogFileIndex);
}
}
int main(int argc, char * argv[])
{
qDebug() << "==================kdemain in before message handler===========================";
qInstallMessageHandler(messageOutput);
qDebug() << "==================kdemain in===========================";
KWin::disablePtrace();
KWin::Application::setupMalloc();
KWin::Application::setupLocalizedString();

108
src/main_x11.cpp
View File

@ -36,6 +36,8 @@
#include <QVBoxLayout>
#include <QX11Info>
#include <QtDBus>
#include <QDir>
#include <QRegularExpression>
// system
#ifdef HAVE_UNISTD_H
@ -43,6 +45,15 @@
#endif // HAVE_UNISTD_H
#include <iostream>
#if defined(QT_NO_DEBUG)
#define LOG_FILE_COUNT_MAX 2
#else
#define LOG_FILE_COUNT_MAX 4
#endif
#define LOG_FILE_SIZE_MAX 20*1024*1024
#define LOG_FILE_PREFIX "ukui_kwin"
#define LOG_FILE_PATH "/.log/"
Q_LOGGING_CATEGORY(KWIN_CORE, "kwin_core", QtWarningMsg)
namespace KWin
@ -334,8 +345,105 @@ void ApplicationX11::crashHandler(int signal)
} // namespace
/*
* find next log file, and do some check.
*/
static int checkLogFile(int index) {
int logFileIndex = index;
for (size_t i = 0; i < LOG_FILE_COUNT_MAX; i++) {
logFileIndex = (logFileIndex + 1) % LOG_FILE_COUNT_MAX;
QString logFilePath = QDir::homePath() + LOG_FILE_PATH + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(logFileIndex);
if (!QFile::exists(logFilePath))
break;
QFile temp(logFilePath);
if (temp.size() < LOG_FILE_SIZE_MAX)
break;
if ((LOG_FILE_COUNT_MAX - 1) == i) {
// here is the next log file.
logFileIndex = (logFileIndex + 1) % LOG_FILE_COUNT_MAX;
QString nextLogFilePath = QDir::homePath() + LOG_FILE_PATH + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(logFileIndex);
// prepare rotate to next log file, so we should log some info in prev log file to make a better understanding.
FILE* tailFile = fopen(logFilePath.toLocal8Bit().constData(), "a+");
if (tailFile) {
fprintf(tailFile, "to be continue, please check:\r\n\t[%s]", nextLogFilePath.toStdString().c_str());
fclose(tailFile);
}
// and make next log file be clear
QFile nextLogFile(nextLogFilePath);
nextLogFile.remove();
}
}
return logFileIndex;
}
static void messageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
QByteArray localMsg = msg.toLocal8Bit();
QDateTime dateTime = QDateTime::currentDateTime();
QString strFormat = "yyMMdd hh:mm:ss.zzz";
QString strDateTime = dateTime.toString(strFormat);
FILE *log_file = nullptr;
QString logFilePath;
int fileSize;
static int currentLogFileIndex = -1;
QDir dir;
bool flag = 0;
logFilePath = QDir::homePath() + LOG_FILE_PATH;
if (dir.mkpath(logFilePath)) {
flag = 1;
}
if (flag) {
if (-1 == currentLogFileIndex)
currentLogFileIndex = checkLogFile(currentLogFileIndex);
logFilePath = logFilePath + "/" + QStringLiteral("%1_%2.log").arg(LOG_FILE_PREFIX).arg(currentLogFileIndex);
log_file = fopen(logFilePath.toLocal8Bit().constData(), "a+");
}
QString src = QString(context.file ? context.file : "").section('/', -1);
QRegularExpression re("(\\w([\\S]*?)[\\s]?)(\\()");
QRegularExpressionMatch match = re.match(context.function);
QString func = match.hasMatch() ? match.captured(1) : "";
QString exinfo = src.isEmpty() ? QString() : QStringLiteral("(%1:%2 %3)").arg(src).arg(context.line).arg(func);
switch (type) {
case QtDebugMsg:
if (!log_file) {
break;
}
fprintf(log_file, "Debug: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtInfoMsg:
fprintf(log_file? log_file: stdout, "Info: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtWarningMsg:
fprintf(log_file? log_file: stderr, "Warning: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtCriticalMsg:
fprintf(log_file? log_file: stderr, "Critical: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
case QtFatalMsg:
fprintf(log_file? log_file: stderr, "Fatal: %s: %s %s\n", strDateTime.toStdString().c_str(), localMsg.constData(), exinfo.toStdString().c_str());
break;
}
if (log_file) {
fileSize = ftell(log_file);
fclose(log_file);
if (fileSize >= LOG_FILE_SIZE_MAX)
currentLogFileIndex = checkLogFile(currentLogFileIndex);
}
}
int main(int argc, char * argv[])
{
qDebug() << "==================kdemain in before message handler===========================";
qInstallMessageHandler(messageOutput);
qDebug() << "==================kdemain in===========================";
KWin::Application::setupMalloc();
KWin::Application::setupLocalizedString();