xlmalloc.h

一个操作系统源代码 用于嵌入式设备 在Vc++环境下仿真 成功移植到多款处理器上

#ifndef XLMALLOC_H
#define XLMALLOC_H

union header {
	struct {
		union header  *ptr;
		unsigned long size;
	} s;
	char c[8];	// For debugging; also ensure size is 8 bytes 
};


typedef union header HEADER;

#define	ABLKSIZE	(sizeof (HEADER))
#define	BTOU(nb)	((((nb) + ABLKSIZE - 1) / ABLKSIZE) + 1)



#endif