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合肥建网站要多少钱,个体工商户查询,世界杯竞猜,asp外贸网站建设招聘不讲理论#xff0c;直接上在程序中可用代码#xff1a; 一、引入Boost模块 开发环境#xff1a;Visual Studio 2017 Boost库版本#xff1a;1.68.0 安装方式#xff1a;Nuget 安装命令#xff1a; #只安装下面几个即可 Install-package boost -version 1.68.0 Install…不讲理论直接上在程序中可用代码 一、引入Boost模块 开发环境Visual Studio 2017 Boost库版本1.68.0 安装方式Nuget 安装命令 #只安装下面几个即可 Install-package boost -version 1.68.0 Install-package boost_filesystem-vc141 -version 1.68.0 Install-package boost_log_setup-vc141 -version 1.68.0 Install-package boost_log-vc141 -version 1.68.0#这里是其他模块可不安装 Install-package boost_atomic-vc141 -version 1.68.0 Install-package boost_chrono-vc141 -version 1.68.0 Install-package boost_date_time-vc141 -version 1.68.0 Install-package boost_system-vc141 -version 1.68.0 Install-package boost_thread-vc141 -version 1.68.0 Install-package boost_locale-vc141 -version 1.68.0 调用Nuget控制台 二、引入下面两个hpp文件 boost_logger.hpp #pragma once#include string #include fstream #include iostream #include boost/filesystem.hpp #include boost/smart_ptr/shared_ptr.hpp #include boost/core/null_deleter.hpp #include boost/log/core.hpp #include boost/log/expressions.hpp #include boost/log/sinks/async_frontend.hpp #include boost/log/sinks/text_ostream_backend.hpp #include boost/log/sources/record_ostream.hpp #include boost/log/trivial.hpp #include boost/log/support/date_time.hpp #include boost/log/utility/setup/common_attributes.hpp #include boost/log/sources/severity_logger.hpp #include boost/log/attributes/current_thread_id.hpp #include boost/log/attributes/current_process_name.hpp #include boost/log/attributes/attribute.hpp #include boost/log/attributes/attribute_cast.hpp #include boost/log/attributes/attribute_value.hpp #include boost/log/sinks/async_frontend.hpp// Related headersQDebug #include boost/log/sinks/unbounded_fifo_queue.hpp #include boost/log/sinks/unbounded_ordering_queue.hpp #include boost/log/sinks/bounded_fifo_queue.hpp #include boost/log/sinks/bounded_ordering_queue.hpp #include boost/log/sinks/drop_on_overflow.hpp #include boost/log/sinks/block_on_overflow.hpp//这里是logger的头文件后面根据实际路径引入 #include logger.hpp//引入各种命名空间 namespace logging boost::log; namespace src boost::log::sources; namespace expr boost::log::expressions; namespace sinks boost::log::sinks; namespace keywords boost::log::keywords; namespace attrs boost::log::attributes; //建立日志源支持严重属性 thread_local static boost::log::sources::severity_loggerlog_level lg;#define BOOST_LOG_Q_SIZE 1000//创建输出槽synchronous_sink是同步前端允许多个线程同时写日志后端无需考虑多线程问题 typedef sinks::asynchronous_sinksinks::text_file_backend, sinks::bounded_fifo_queueBOOST_LOG_Q_SIZE, sinks::block_on_overflow sink_t; static std::ostream operator(std::ostream strm, log_level level) {static const char *strings[] {debug,info,warn,error,critical};if (static_caststd::size_t(level) sizeof(strings) / sizeof(strings))strm strings[level];elsestrm static_castint(level);return strm; } class boost_logger : public logger_iface { public:boost_logger(const std::string dir) : m_level(log_level::error_level), dir(dir){}~boost_logger(){}/** 日志初始化*/void init() override{//判断日志文件所在路径是否存在if (boost::filesystem::exists(dir) false){boost::filesystem::create_directories(dir);}//添加公共属性logging::add_common_attributes();//获取日志库核心core logging::core::get();//创建后端并设值日志文件相关控制属性boost::shared_ptrsinks::text_file_backend backend boost::make_sharedsinks::text_file_backend(keywords::open_mode std::ios::app, // 采用追加模式keywords::filename dir /%Y%m%d%N.log, //归档日志文件名keywords::rotation_size 10 * 1024 * 1024, //超过此大小自动建立新文件keywords::time_based_rotation sinks::file::rotation_at_time_point(0, 0, 0), //每隔指定时间重建新文件keywords::min_free_space 100 * 1024 * 1024 //最低磁盘空间限制);if (!_sink){_sink.reset(new sink_t(backend));//向日志源添加槽core-add_sink(_sink);}//添加线程ID公共属性core-add_global_attribute(ThreadID, attrs::current_thread_id());//添加进程公共属性core-add_global_attribute(Process, attrs::current_process_name());//设置过滤器_sink-set_filter(expr::attrlog_level(Severity) m_level);// 如果不写这个它不会实时的把日志写下去而是等待缓冲区满了或者程序正常退出时写下// 这样做的好处是减少IO操作提高效率_sink-locked_backend()-auto_flush(true); // 使日志实时更新//这些都可在配置文件中配置_sink-set_formatter(expr::stream [ expr::attrstd::string(Process) : expr::attrattrs::current_thread_id::value_type(ThreadID) : expr::attrunsigned int(LineID) ][ expr::format_date_timeboost::posix_time::ptime(TimeStamp, %Y-%m-%d %H:%M:%S.%f) ][ expr::attrlog_level(Severity) ] expr::smessage);}/*** 停止记录日志/void stop() override{warn_log(boost logger stopping);_sink-flush();_sink-stop();core-remove_sink(_sink);}/** 设置日志级别*/void set_log_level(log_level level) override{m_level level;if (_sink){_sink-set_filter(expr::attrlog_level(Severity) m_level);}}log_level get_log_level() override{return m_level;}void debug_log(const std::string msg) override{BOOST_LOG_SEV(lg, debug_level) msg std::endl;}void info_log(const std::string msg) override{BOOST_LOG_SEV(lg, info_level) blue msg normal std::endl;}void warn_log(const std::string msg) override{BOOST_LOG_SEV(lg, warn_level) yellow msg normal std::endl;}void error_log(const std::string msg) override{BOOST_LOG_SEV(lg, error_level) red msg normal std::endl;}void critical_log(const std::string msg) override{BOOST_LOG_SEV(lg, critical_level) red msg normal std::endl;}private:log_level m_level;boost::shared_ptrlogging::core core;boost::shared_ptrsink_t _sink;//日志文件路径const std::string dir; }; logger.hpp #pragma once #define BOOST_ALL_DYN_LINK#include string // std::string #include iostream // std::cout #include fstream #include sstream // std::ostringstream #include memorytypedef std::basic_ostringstreamchar tostringstream; static const char black[] {0x1b, [, 1, ;, 3, 0, m, 0}; static const char red[] {0x1b, [, 1, ;, 3, 1, m, 0}; static const char yellow[] {0x1b, [, 1, ;, 3, 3, m, 0}; static const char blue[] {0x1b, [, 1, ;, 3, 4, m, 0}; static const char normal[] {0x1b, [, 0, ;, 3, 9, m, 0}; #define ACTIVE_LOGGER_INSTANCE (*activeLogger::getLoggerAddr()) // note: this will replace the logger instace. If this is not the first time to set the logger instance. // Please make sure to delete/free the old instance. #define INIT_LOGGER(loggerImpPtr) { \ACTIVE_LOGGER_INSTANCE loggerImpPtr; \ACTIVE_LOGGER_INSTANCE-init(); } #define CHECK_LOG_LEVEL(logLevel) (ACTIVE_LOGGER_INSTANCE ? ((ACTIVE_LOGGER_INSTANCE-get_log_level() log_level::logLevel##_level) ? true : false) : false) #define SET_LOG_LEVEL(logLevel) { \if (ACTIVE_LOGGER_INSTANCE) (ACTIVE_LOGGER_INSTANCE-set_log_level(log_level::logLevel##_level)); } #define DESTROY_LOGGER { \if (ACTIVE_LOGGER_INSTANCE) { \ACTIVE_LOGGER_INSTANCE-stop(); \delete ACTIVE_LOGGER_INSTANCE; } }enum log_level {debug_level 0,info_level,warn_level,error_level,critical_level };class logger_iface { public:logger_iface(void) default;virtual ~logger_iface(void) default;logger_iface(const logger_iface ) default;logger_iface operator(const logger_iface ) default;public:virtual void init() 0;virtual void stop() 0;virtual void set_log_level(log_level level) 0;virtual log_level get_log_level() 0;virtual void debug_log(const std::string msg) 0;virtual void info_log(const std::string msg) 0;virtual void warn_log(const std::string msg) 0;virtual void error_log(const std::string msg) 0;virtual void critical_log(const std::string msg) 0; };class activeLogger { public:static logger_iface **getLoggerAddr(){static logger_iface activeLogger;return activeLogger;} };#define __LOGGING_ENABLED#ifdef __LOGGING_ENABLED #define __LOG(level, msg) \{ \tostringstream var; \var [ FILE : LINE : func ] \n \ msg; \if (ACTIVE_LOGGER_INSTANCE) \ACTIVE_LOGGER_INSTANCE-level##_log(var.str()); } #else #define __LOG(level, msg) #endif / LOGGING_ENABLED */ 三、使用样例 #include logger/boost_logger.hpp #include logger/simpleLogger.hppvoid testCustomLogger() {//初始化日志对象日志路径后期从配置文件读取const std::string logDir E:\log;INIT_LOGGER(new boost_logger(logDir));//设置过滤级别可以读取配置文件SET_LOG_LEVEL(debug);//输出各级别日志(void *)ACTIVE_LOGGER_INSTANCE代表激活的日志实例可不写LOG(critical, hello logger! this is critical log (void *)ACTIVE_LOGGER_INSTANCE);__LOG(debug, hello logger!!!!!!!!!!!!!!! this is debug log); }