my_malloc.h

来自「操作系统辅导与提高光盘源码」· C头文件 代码 · 共 20 行

#include <stdlib.h>

typedef long Align;		/* for alignment to long boundary */

union header {			/* block header: */
	struct {
		union header *next;	/* next block if on Free list */
		unsigned int size;	/* size of this block */
	} s;
	Align x;		/* force alignment of blocks */
};

typedef union header Header;

#define NALLOC			10	/* minimum #units to request */

static Header* morecore(unsigned int nu);
void* Malloc(unsigned int nbytes);
void Free(void *ap);