#ifndef _COMMON_H_
#define _COMMON_H_

#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <stdarg.h>

// [warring] offsetof is redefined in stddef.h
// 
// #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
// #define container_of(ptr, type, member) ({ \
//     const typeof( ((type *)0)->member ) *__mptr = (ptr); \
//     (type *)( (char *)__mptr - offsetof(type,member) );})

#define _offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#define container_of(ptr, type, member) ({ \
    const typeof( ((type *)0)->member ) *__mptr = (ptr); \
    (type *)( (char *)__mptr - _offsetof(type,member) );})

#endif