日志文件：回滚日志前，把日志备份

src/FMDbMonitor.cpp

@@ -33,21 +33,28 @@ INITIALIZE_EASYLOGGINGPP
 //IOperation *dbOperation;       //订单相关操作类
 void app_stopped(int sig);      //SIGINT(Ctrl + C)
 
+void logRolloutHandler(const char* filename, std::size_t size)
+{
+    /// 备份日志  
+    std::string strLogPath = GetProcDir();
+    strLogPath.append(filename);
+
+    std::stringstream ss;
+    ss << "mv " << strLogPath.data() << " "<<strLogPath.data()<<"_bk";
+    system(ss.str().c_str());
+}
+
 int main()
 {
-    /*HANDLE hObject = CreateMutex(NULL,FALSE,L"FmSingleMonitorConsole");
-    if(GetLastError() == ERROR_ALREADY_EXISTS)
-    {
-        CloseHandle(hObject);
-        MessageBox(NULL,L"程序已经运行!",NULL,NULL);
-        return FALSE;
-    }*/
     el::Loggers::addFlag(el::LoggingFlag::StrictLogFileSizeCheck);
     std::string strLogPath = GetProcDir(); 
     strLogPath.append("log.conf");
     el::Configurations conf(strLogPath.data());
     /// 设置全部logger的配置  
     el::Loggers::reconfigureAllLoggers(conf);
+    /// 注册回调函数  
+    el::Helpers::installPreRollOutCallback(logRolloutHandler);
+
 
     InitSystem();
 
@@ -193,6 +200,9 @@ int main()
         //关闭socket
         close(sockfd);
     }
+
+    /// 注销回调函数  
+    el::Helpers::uninstallPreRollOutCallback();
     return 0;
 }