mlog¶

Introduction¶

mlog is a lightweight c language log library .

github source code in github

File layout¶

mlog.c
mlog.h
mlog_port.c
mlog_port.h

Usage¶

Port¶

Port mlog_port.c. Two functions need to port.

void get_time_str(char *time_buf) return current time.
void print_by_user(char * str) user print.

on Windows like this :

#include <stdio.h>
#include <stdarg.h>

#include <windows.h>
void get_time_str(char *time_buf)
{
    SYSTEMTIME currentTime;
    GetSystemTime(&currentTime);
    sprintf(time_buf,"%04u.%02u.%02u %02u:%02u:%02u.%02u",           
     currentTime.wYear,currentTime.wMonth,currentTime.wDay,
     currentTime.wHour,currentTime.wMinute,currentTime.wSecond,
     currentTime.wMilliseconds);
}

void print_by_user(char * str) 
{
    printf("usrp %s\n", str);
}

Use¶

example :

#include "mlog.h"
#include "stdio.h"

int main(void)
{

    M_DEBUG("this is debug %s %d\n", "gggg", 123);

    M_INFO("this is info %s %d\n", "gggg", 123);

    M_WARN("this is warn %s %d\n", "gggg", 123);

    M_ERROR("this is error %s %d\n", "gggg", 123);

    M_FATAL("this is fatal %s %d\n", "gggg", 123);
    return 0;
}

in log file mylog_0.log will output these:

2020.01.05 03:57:11.431 debug: this is debug gggg 123
2020.01.05 03:57:11.431 info: this is info gggg 123
2020.01.05 03:57:11.441 warn: this is warn gggg 123
2020.01.05 03:57:11.441 error: this is error gggg 123
2020.01.05 03:57:11.441 fatal: this is fatal gggg 123

Configuration¶

in mlog.h

name	info
MLOG_ENABLE	define this means enable log
MLOG_FILE_ENABLE	define this means enable output to file
MLOG_LEVEL_CUR	level of current
LOG_STR_LEN	max len of one log string
FILE_NAME_MAX_LEN	max len of filename
LOG_FILE_NAME	your file name
ONE_LOGFILE_MAX_LEN	max len of one log file
MAX_FILE_CNTS	can output to multi files, this means how many output files