log.h

支持多进程环境

#ifndef _LOG_H
#define _LOG_H


#define APP_EMERG 		0  // 系统不可用
#define APP_ALERT		1  // 紧急错误 
#define APP_CRIT		2  // 致命错误
#define APP_ERROR		3  // 一般性错误
#define APP_WARNING		4  // 警告错误
#define APP_NOTICE		5  // 通知性问题
#define APP_INFO		6  // 事务性日志
#define APP_DEBUG		7  // 调试日志
#define APP_TRACE		8  // 详细跟踪日志

#define DETAIL(level, fmt, args...) \
	write_log (level, "[%s][%d]%s: " fmt "\n", __FILE__, __LINE__, __FUNCTION__ , ##args) 
	
#define SIMPLY(level, fmt, args...) write_log(level, fmt "\n" , ##args)

#define ERROR_LOG(fmt, args...)	DETAIL(APP_ERROR, fmt , ##args)
#define CRIT_LOG(fmt, args...)	DETAIL(APP_CRIT, fmt , ##args)
#define ALERT_LOG(fmt, args...)	DETAIL(APP_ALERT, fmt , ##args)
#define EMERG_LOG(fmt, args...)	DETAIL(APP_EMERG, fmt , ##args)

#define WARN_LOG(fmt, args...)	SIMPLY(APP_WARNING, fmt , ##args)
#define NOTI_LOG(fmt, args...)	SIMPLY(APP_NOTICE, fmt , ##args)
#define INFO_LOG(fmt, args...)	SIMPLY(APP_INFO, fmt , ##args)
#define DEBUG_LOG(fmt, args...)	SIMPLY(APP_DEBUG, fmt , ##args)
#define TRACE_LOG(fmt, args...) SIMPLY(APP_TRACE, fmt, ##args)

#define BOOT_LOG(OK, fmt , args...) do{ \
	boot_log(OK, 0, fmt , ##args); \
	return OK; \
}while (0)


#define BOOT_LOG_NORETURN(OK, fmt , args...) do{ \
	boot_log(OK, 0, fmt , ##args); \
}while (0)


extern int log_init (const char* dir, int level, u_int size, const char* fix_name, int need_sync);

extern void write_log (int lvl, const char* fmt, ...);

extern void boot_log (int OK, int dummy, const char* fmt, ...);


#endif  /* _LOG_H */