C++有许多已经封装好的数据结构，但是当数据不是标准数据时，存在很大麻烦，如内存块时。
直接进入话题吧：
如题：
结构头文件
#include <stdio.h>
#include <stdlib.h>
#define uint unsigned int
typedef struct databuf
{
char *Addr ;
unsigned int Len ;
databuf *next;
databuf *previous;
}databuf,*pdatabuf ;
class NetData
{
public:
pdatabuf Data ;
bool Lock ;
NetData();
~NetData();
void Lockdata();
void UnLockdata();
void WaitUnLock() ;
void Entity_entity(pdatabuf Node,char *Addr,uint Len);
/* first is messy print */
void Entity_print(pdatabuf Node);
void PrintList(pdatabuf phead);
/* Length 1 no data only head */
int GetLength(pdatabuf phead);
pdatabuf Before_Null_Node(pdatabuf phead);
/* Create,return Node add */
pdatabuf CreateNode(pdatabuf previous,char *Addr,uint Len);
pdatabuf CreateNode_Head();
/* Add Node between */
void AddNode(pdatabuf pNode,pdatabuf pNode2,char *Addr ,uint Len);
/* Delete next Node */
bool DeleteNode(pdatabuf pNode);
private:
protected:
};
结构CPP文件
NetData::NetData()
:Lock(0)
{
}
NetData::~NetData()
{
}
void NetData::Lockdata()
{
printf("Lockedn");
this->Lock = 1 ;
}
void NetData::UnLockdata()
{
printf("UnLockedn");
this->Lock = 0 ;
}
void NetData::WaitUnLock()
{
while(this->Lock==1)
{
usleep(200000);
}
printf("UnLockedn");
}
void NetData::Entity_entity(pdatabuf Node,char *Addr,uint Len)
{
Node->Addr = Addr ;
Node->Len = Len ;
}
pdatabuf NetData::CreateNode_Head()
{
pdatabuf pNode = (pdatabuf)malloc(sizeof(databuf));
assert(pNode!=NULL);
pNode->next = NULL ;
pNode->previous = pNode;
return pNode ;
}
/* first is messy print */
void NetData::Entity_print(pdatabuf Node)
{
}
void NetData::PrintList(pdatabuf phead)
{
pdatabuf p = phead ;
while(p!=NULL)
{
Entity_print(p);
p = p->next ;
}
}
/* Length 1 no data only head */
int NetData::GetLength(pdatabuf phead)
{
pdatabuf p = phead ; int Length=0 ;
while(p!=NULL)
{
Length ++ ;
p = p->next ;
}
return Length ;
}
pdatabuf NetData::Before_Null_Node(pdatabuf phead)
{
pdatabuf p = phead ;
while(p->next!=NULL)
{
p=p->next ;
}
return p ;
}
/* Create,return Node add */
pdatabuf NetData::CreateNode(pdatabuf previous,char *Addr ,uint Len)
{
pdatabuf pNode = (pdatabuf)malloc(sizeof(databuf));
assert(pNode!=NULL);
pNode->next = NULL ;
pNode->previous = previous ;
Entity_entity(pNode,Addr,Len);
return pNode ;
}
/* Add Node between */
void NetData::AddNode(pdatabuf pNode,pdatabuf pNode2,char *Addr,uint Len)
{
pdatabuf pNew = CreateNode(pNode,Addr,Len);
pNode->next = pNew ;
pNew->next = pNode2 ;
//pNew->previous = pNode ;
}
/* Delete next Node */
bool NetData::DeleteNode(pdatabuf pNode)
{
pdatabuf pDel = pNode->next ;
if(pDel==NULL)
{
printf(" No Node to Delete ");
return 0 ;
}
pNode->next = pDel->next ;
pDel->next->previous = pNode ;
pDel->previous = NULL ;
pDel->next = NULL ;
free(pDel->Addr);
free(pDel);
return 1 ;
}
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