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+/***********************************************************************/
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+//文 件 名:CBuffers.cpp
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+//功 能:CBuffers类实现
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+/***********************************************************************/
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+#include "pch.h"
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+#include "Buffers.h"
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+#include <windows.h>
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+
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+#ifdef _DEBUG
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+#include "stdio.h"
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+#include <iostream>
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+using namespace std;
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+#endif
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+
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+//直接从zwl_memory中搬过来
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+//属于粗放型的内存管理
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+
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+template<class _Tc>class template_malloc
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+{
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+#ifdef _DEBUG
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+ //检测用
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+public:
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+ unsigned int nItems;
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+#endif
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+#pragma pack(push,1) //强制本结构1字节对齐
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+ typedef struct tagItem
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+ {
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+ union
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+ {
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+ tagItem*next;
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+ size_t size;
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+ };
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+ _Tc data;
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+ }ITEM,*PITEM;
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+#pragma pack(pop)
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+public:
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+ char* mlloc(void)
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+ {
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+ if(!__item__) return(NULL);
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+ PITEM pitem = __item__;
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+ __item__ = __item__->next;
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+ pitem->size = sizeof(_Tc);
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+#ifdef _DEBUG
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+ nItems--;
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+#endif
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+ return(pitem->data);
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+ }
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+
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+#ifdef _DEBUG
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+ int getItemCount(){
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+ return nItems;
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+ }
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+#endif
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+
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+ void release(char*pdata)
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+ {
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+ PITEM pitem=(PITEM)pdata;
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+ memset(pitem,0,sizeof(ITEM));
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+ pitem->next = __item__;
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+ __item__ = pitem;
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+
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+#ifdef _DEBUG
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+ nItems++;
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+#endif
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+ }
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+ void clean(void)
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+ {
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+ char*lpData=NULL;
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+ for(PITEM pnext=NULL;__item__;__item__=pnext)
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+ {
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+ pnext = __item__->next;
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+ lpData = (char*)__item__;
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+ delete[] lpData;
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+ }
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+ }
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+ template_malloc(void):__item__(NULL)
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+ {
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+#ifdef _DEBUG
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+ nItems = 0;
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+#endif
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+ }
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+ ~template_malloc(void)
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+ {
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+ clean();
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+ }
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+ PITEM __item__;
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+};
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+
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+#define __malloc__(T,P)\
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+ else if(lsize<=T)\
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+{\
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+ lpData=P.mlloc();\
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+ _size = T;\
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+}
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+class memory_factory
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+{
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+public:
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+ char*malloc( size_t lsize, size_t* msize )
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+ {
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+ char*lpData=NULL;
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+ size_t _size(0);
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+
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+ EnterCriticalSection(&__lock__);
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+
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+ if(lsize<=16)
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+ {
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+ lpData = _alloc_16.mlloc();
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+ _size = 16;
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+ }
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+ __malloc__(32,_alloc_32)
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+ __malloc__(64,_alloc_64)
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+ __malloc__(128,_alloc_128)
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+ __malloc__(256,_alloc_256)
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+ __malloc__(512,_alloc_512)
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+ __malloc__(1024,_alloc_1k)
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+ __malloc__(1024*2L,_alloc_2k)
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+ __malloc__(1024*4L,_alloc_4k)
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+ __malloc__(1024*8L,_alloc_8k)
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+ __malloc__(1024*16L,_alloc_16k)
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+ __malloc__(1024*32L,_alloc_32k)
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+ __malloc__(1024*64L,_alloc_64k)
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+ __malloc__(1024*128L,_alloc_128k)
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+ __malloc__(1024*256L,_alloc_256k)
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+ __malloc__(1024*512L,_alloc_512k)
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+ __malloc__(1024*1024L,_alloc_1m)
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+ //__malloc__(2*1024*1024L,_alloc_2m)
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+ //__malloc__(3*1024*1024L,_alloc_3m)
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+ //__malloc__(4*1024*1024L,_alloc_4m)
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+ //__malloc__(8*1024*1024L,_alloc_8m)
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+ //__malloc__(16*1024*1024L,_alloc_16m)
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+ //__malloc__(32*1024*1024L,_alloc_32m)
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+ else
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+ {
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+ _size=lsize;
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+ }
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+ LeaveCriticalSection(&__lock__);
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+ if(!lpData)
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+ {
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+ char*lpMalloc=new char[ _size + sizeof( size_t ) ];
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+ if(!lpMalloc) return(NULL);
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+ *(size_t*)lpMalloc = _size;
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+ memset(lpData=lpMalloc + sizeof( size_t ), 0, _size );
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+ }
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+#ifdef _DEBUG
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+ else {
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+ nCount --;
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+ }
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+#endif
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+ if(msize) *msize = _size;
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+ return(lpData);
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+ }
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+ void release(char*lpData)
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+ {
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+ if( lpData == NULL )
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+ return;
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+
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+ char* lpMalloc = lpData - sizeof( size_t );
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+ EnterCriticalSection(&__lock__);
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+ switch( *( size_t* )lpMalloc )
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+ {
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+ case 16: _alloc_16.release(lpMalloc); break;
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+ case 32: _alloc_32.release(lpMalloc); break;
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+ case 64: _alloc_64.release(lpMalloc); break;
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+ case 128: _alloc_128.release(lpMalloc); break;
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+ case 256: _alloc_256.release(lpMalloc); break;
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+ case 512: _alloc_512.release(lpMalloc); break;
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+ case 1024: _alloc_1k.release(lpMalloc); break;
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+ case 1024*2L: _alloc_2k.release(lpMalloc); break;
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+ case 1024*4L: _alloc_4k.release(lpMalloc); break;
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+ case 1024*8L: _alloc_8k.release(lpMalloc); break;
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+ case 1024*16L: _alloc_16k.release(lpMalloc); break;
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+ case 1024*32L: _alloc_32k.release(lpMalloc); break;
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+ case 1024*64L: _alloc_64k.release(lpMalloc); break;
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+ case 1024*128L: _alloc_128k.release(lpMalloc); break;
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+ case 1024*256L: _alloc_256k.release(lpMalloc); break;
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+ case 1024*512L: _alloc_512k.release(lpMalloc); break;
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+ case 1024*1024L: _alloc_1m.release(lpMalloc); break;
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+// case 2*1024*1024L: _alloc_2m.release(lpMalloc); break;
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+// case 3*1024*1024L: _alloc_3m.release(lpMalloc); break;
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+// case 4*1024*1024L: _alloc_4m.release(lpMalloc); break;
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+// case 8*1024*1024L: _alloc_8m.release(lpMalloc); break;
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+// case 16*1024*1024L: _alloc_16m.release(lpMalloc); break;
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+// case 32*1024*1024L: _alloc_32m.release(lpMalloc); break;
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+ default: delete[] lpMalloc;
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+ }
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+ LeaveCriticalSection(&__lock__);
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+
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+#ifdef _DEBUG
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+ nCount ++;
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+#endif
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+ }
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+ void clean(void)
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+ {
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+ EnterCriticalSection(&__lock__);
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+ _alloc_16.clean();
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+ _alloc_32.clean();
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+ _alloc_64.clean();
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+ _alloc_128.clean();
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+ _alloc_256.clean();
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+ _alloc_512.clean();
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+ _alloc_1k.clean();
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+ _alloc_2k.clean();
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+ _alloc_4k.clean();
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+ _alloc_8k.clean();
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+ _alloc_16k.clean();
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+ _alloc_32k.clean();
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+ _alloc_64k.clean();
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+ _alloc_128k.clean();
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+ _alloc_256k.clean();
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+ _alloc_512k.clean();
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+ _alloc_1m.clean();
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+ _alloc_2m.clean();
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+ _alloc_3m.clean();
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+ _alloc_4m.clean();
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+ _alloc_8m.clean();
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+ _alloc_16m.clean();
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+ _alloc_32m.clean();
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+
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+ LeaveCriticalSection(&__lock__);
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+
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+ }
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+ memory_factory(void)
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+ {
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+
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+ InitializeCriticalSection(&__lock__);
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+
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+#ifdef _DEBUG
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+ nCount = 0;;
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+#endif
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+ }
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+
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+ ~memory_factory(void)
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+ {
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+ clean();
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+ DeleteCriticalSection(&__lock__);
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+ }
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+
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+#ifdef _DEBUG
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+ int getItemCount(){
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+ return nCount;
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+ }
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+#endif
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+ template_malloc<char[16]> _alloc_16;
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+ template_malloc<char[32]> _alloc_32;
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+ template_malloc<char[64]> _alloc_64;
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+ template_malloc<char[128]> _alloc_128;
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+ template_malloc<char[256]> _alloc_256;
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+ template_malloc<char[512]> _alloc_512;
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+ template_malloc<char[1024]> _alloc_1k;
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+ template_malloc<char[1024*2L]> _alloc_2k;
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+ template_malloc<char[1024*4L]> _alloc_4k;
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+ template_malloc<char[1024*8L]> _alloc_8k;
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+ template_malloc<char[1024*16L]> _alloc_16k;
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+ template_malloc<char[1024*32L]> _alloc_32k;
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+ template_malloc<char[1024*64L]> _alloc_64k;
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+ template_malloc<char[1024*128L]> _alloc_128k;
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+ template_malloc<char[1024*256L]> _alloc_256k;
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+ template_malloc<char[1024*512L]> _alloc_512k;
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+ template_malloc<char[1024*1024L]> _alloc_1m;
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+ template_malloc<char[1024*1024L*2]> _alloc_2m;
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+ template_malloc<char[1024*1024L*3]> _alloc_3m;
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+ template_malloc<char[1024*1024L*4]> _alloc_4m;
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+ template_malloc<char[1024*1024L*8]> _alloc_8m;
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+ template_malloc<char[1024*1024L*16]> _alloc_16m;
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+ template_malloc<char[1024*1024L*32]> _alloc_32m;
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+
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+ CRITICAL_SECTION __lock__;
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+
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+#ifdef _DEBUG
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+ int nCount;
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+#endif
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+
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+}__memory__;
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+
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+CBuffers::CBuffers(LPVOID lpBuffer):
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+bufData((LPSTR)lpBuffer),sizeData(0),sizeMalloc(0)
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+{
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+ if(bufData){
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+ sizeMalloc = *( size_t* )( (char*)lpBuffer - sizeof( size_t ) );
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+ }
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+}
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+
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+CBuffers::~CBuffers(void)
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+{
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+ if(bufData)
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+ {
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+ __memory__.release(bufData);
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+ bufData = 0;
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+ }
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+}
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+/////////////////////////////////////////////////////////////////////////////
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+LPSTR CBuffers::GetBuf(size_t lsize)
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+{
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+ if( ( lsize + 1 ) > sizeMalloc )
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+ {
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+ if(bufData)
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+ {
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+ __memory__.release(bufData);
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+ bufData = 0;
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+ }
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+ bufData=__memory__.malloc( lsize + 1, &sizeMalloc );
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+ }
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+ if( bufData && sizeMalloc )
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+ memset( bufData, 0, sizeMalloc );
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+ sizeData = lsize;
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+ return(bufData);
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+}
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+
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+void CBuffers::Release(void)
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+{
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+ if(bufData)
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+ {
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+ __memory__.release(bufData);
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+ bufData = 0;
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+ }
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+ sizeData = sizeMalloc = 0;
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+}
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+
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+char * CBuffers::Copy(void * lpData, size_t lsize)
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+{
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+ if(!GetBuf(lsize+1)) return(0); //避免字符串等不注意的情形,多分配一点
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+ if(lsize)
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+ {
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+ memcpy(bufData,lpData,lsize);
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+ }
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+ sizeData = lsize;
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+ return(bufData);
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+}
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+
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+char * CBuffers::Append(void * lpData, size_t lsize)
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+{
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+ if(lsize)
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+ {
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+ if(!Extern(sizeData+lsize+1)) return(0);
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+ memcpy(bufData+sizeData,lpData,lsize);
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+ sizeData += lsize;
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+ }
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+ return(bufData);
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+}
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+
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+char * CBuffers::Extern( size_t maxSize)
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+{
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+ if(maxSize>sizeMalloc)
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+ {
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+ size_t sizeNew(0);
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+ char * bufNew=__memory__.malloc(maxSize, &sizeNew );
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+ if(!bufNew) return(0);
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+ if(bufData)
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+ {
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+ if(sizeData) memcpy(bufNew,bufData,sizeData);
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+ if(bufData)
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+ {
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+ __memory__.release(bufData);
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+ bufData = 0;
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+ }
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+ }
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+ bufData = bufNew;
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+ sizeMalloc = sizeNew;
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+ }
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+ return(bufData);
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+}
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+
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+CBuffers::operator const char *(void) const
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+{
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+ return(bufData);
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+}
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+
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+const CBuffers&CBuffers::operator=(const char * lpString)
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+{
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+ Copy((void*)lpString,lstrlenA(lpString));
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+ return(*this);
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+}
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+
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+const CBuffers&CBuffers::operator+=(const char * lpString)
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+{
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+ Append((void*)lpString,lstrlenA(lpString));
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+ return(*this);
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+}
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+
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+void CBuffers::Attach(CBuffers*pMemory)
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+{
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+ if(bufData)
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+ {
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+ __memory__.release(bufData);
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+ bufData = 0;
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+ }
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+ sizeData = pMemory->sizeData;
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+ sizeMalloc = pMemory->sizeMalloc;
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+ bufData = pMemory->bufData;
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+ pMemory->sizeData = pMemory->sizeMalloc = 0;
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+ pMemory->bufData = 0;
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+}
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+
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+void CBuffers::Detach()
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+{
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+ bufData = NULL;
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+}
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