initial.c

模拟内存分配的c语言实现 六、 实验目的 了解用户程序分配内存以及回收所用内存的过程

void initial()
{
        BLOCK *p;
        FreeBL=(BLOCK *)malloc(sizeof(BLOCK));
        FreeBL->next=NULL;
        AllocateBL=(BLOCK *)malloc(sizeof(BLOCK));
        AllocateBL->next=NULL;
        p=(BLOCK *)malloc(1000);
        p->startaddress=(int)p;
        p->length=1000;
        p->endaddress=p->startaddress+p->length-1;
        p->next=NULL;
        FreeBL->next=p;
        start=p->startaddress;
        end=p->length;
        size=p->length;
}

void insert(BLOCK *h,BLOCK *d)
{
        BLOCK *p;
        for(p=h;p->next!=NULL;p=p->next)
        {
                ;
        }
        p->next=d;
}

void delect(BLOCK *h,BLOCK *d)
{
        BLOCK *p;
        for(p=h;p->next!=d;p=p->next)
        {
                ;
        }
        p->next=d->next;
        free(d);
}