modify

MyLogger.pro

@@ -0,0 +1,27 @@
+QT += core
+TEMPLATE = lib
+DEFINES += MYLOGGER_LIBRARY
+
+CONFIG += c++17
+
+INCLUDEPATH += $$PWD/
+
+DESTDIR = $$PWD/../../Build/Libs
+MOC_DIR = $$PWD/Build/moc
+OBJECTS_DIR = $$PWD/Build/objs
+RCC_DIR = $$PWD/Build/resources
+UI_DIR = $$PWD/Build/ui
+
+#在release下输出debug信息
+DEFINES += QT_MESSAGELOGCONTEXT
+
+HEADERS += \
+    $$PWD/loghandler.h
+
+SOURCES += \
+    $$PWD/loghandler.cpp
+
+unix {
+    target.path = /usr/lib
+}
+!isEmpty(target.path): INSTALLS += target

Singleton.h

@@ -52,24 +52,24 @@ private:
 ///                                                                          ///
 ////////////////////////////////////////////////////////////////////////////////
 #if 0
-//template <typename T> QMutex Singleton<T>::mutex;
-//template <typename T> QScopedPointer<T> Singleton<T>::instance;
+template <typename T> QMutex Singleton<T>::mutex;
+template <typename T> QScopedPointer<T> Singleton<T>::instance;
 
-//template <typename T>
-//T& Singleton<T>::getInstance()
-//{
-//    if (instance.isNull())
-//    {
-//        mutex.lock();
-//        if (instance.isNull())
-//        {
-//            instance.reset(new T());
-//        }
-//        mutex.unlock();
-//    }
+template <typename T>
+T& Singleton<T>::getInstance()
+{
+    if (instance.isNull())
+    {
+        mutex.lock();
+        if (instance.isNull())
+        {
+            instance.reset(new T());
+        }
+        mutex.unlock();
+    }
 
-//    return *instance.data();
-//}
+    return *instance.data();
+}
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -78,14 +78,14 @@ private:
 ///                                                                          ///
 ////////////////////////////////////////////////////////////////////////////////
 #if 0
-//#define SINGLETON(Class)                        \
-//private:                                        \
-//    Class();                                    \
-//    ~Class();                                   \
-//    Class(const Class &other);                  \
-//    Class& operator=(const Class &other);       \
-//    friend class Singleton<Class>;              \
-//    friend struct QScopedPointerDeleter<Class>;
+#define SINGLETON(Class)                        \
+private:                                        \
+    Class();                                    \
+    ~Class();                                   \
+    Class(const Class &other);                  \
+    Class& operator=(const Class &other);       \
+    friend class Singleton<Class>;              \
+    friend struct QScopedPointerDeleter<Class>;
 #endif
 #define SINGLETON(Class) friend class Singleton<Class>
 #endif // SINGLETON_H

loghandler.cpp

@@ -1,5 +1,15 @@
 #include "loghandler.h"
-
+#include <iostream>
+#include <QDebug>
+#include <QDateTime>
+#include <QMutexLocker>
+#include <QDir>
+#include <QFile>
+#include <QFileInfo>
+#include <QTimer>
+#include <QTextStream>
+#include <QTextCodec>
+#include "Singleton.h"
 #include <QCoreApplication>
 
 QMutex g_mutex;

loghandler.h

@@ -1,19 +1,9 @@
 #ifndef LOGHANDLER_H
 #define LOGHANDLER_H
 
-#include <iostream>
-#include <QDebug>
-#include <QDateTime>
-#include <QMutexLocker>
-#include <QDir>
-#include <QFile>
-#include <QFileInfo>
-#include <QTimer>
-#include <QTextStream>
-#include <QTextCodec>
-#include "Singleton.h"
+#include <QObject>
 
-class LogHandler
+class Q_DECL_EXPORT LogHandler
 {
 public:
     void installMessageHandler();   // 给Qt安装消息处理函数