菜鸟之驱动开发11

void * __cdecl operator new(size_t size,POOL_TYPE PoolType=PagedPool)
{
KdPrint(("global operator new\n"));
KdPrint(("Allocate size :%d\n",size));
return ExAllocatePoolWithTag(PagedPool,size, 1);
}
//重载delete
void __cdecl operator delete(void* pointer)
{
KdPrint(("Global delete operator\n"));
ExFreePool(pointer);
}

VOID memtest()
{
VOID UNALIGNED *d;
VOID UNALIGNED *s;
SIZE_T Length=8;
ULONG ulRet;
char *buffer=new (PagedPool)  char[111];//
delete buffer;

//为s指针分配大小为8字节的内核 内存
s=ExAllocatePoolWithTag(PagedPool,Length, 1);
KdPrint(("s=%x \n",(int*)s));
//  __asm int 3 db
//为d指针分配大小为8字节的内核 内存
d=ExAllocatePoolWithTag(PagedPool,Length, 1);
//  __asm int 3 db
KdPrint(("d=%x \n",(int*)d));
//用0来填充s指针 指向的内存 填充长度为Length=8
RtlFillMemory(s,Length,'s');
//  __asm int 3 db
KdPrint(("RtlFillMemory 1 \n" ));
//复制S指针指向的内容到 D地址 复制长度为Length=8
RtlCopyMemory(d,s,Length); //memcpy
//  __asm int 3
KdPrint(("RtlCopyMemory s to d \n" ));
//复制S指针指向的内容到 D地址 复制长度为Length=8
RtlCopyBytes(d,s,Length);

//判断内存是否一致
ulRet = RtlCompareMemory(d,s,Length); // 可用
//RtlEqualMemory(d,s,Length);// 和此函数时请用build
if (ulRet==Length) //如果返回值
{
KdPrint(("111 D和S 内存块相同.\n"));
}else KdPrint(("111 D和S 内存块不相同\n"));

//清空S指针指向地址
RtlZeroBytes(s,Length);

ulRet = RtlCompareMemory(d,s,Length);

if (ulRet==Length) //如果返回值
{
KdPrint(("222 D和S 内存块相同.\n"));
}else KdPrint(("222 D和S 内存块不相同\n"));

ExFreePool(s) ;
return;

}