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/*
* Copyright (c) 2003 Rozhuk Ivan <rozhuk.im@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#if !defined(AFX_LIST_MT__H__INCLUDED_)
#define AFX_LIST_MT__H__INCLUDED_
#pragma once
#include "Sdk/InterlockedFunctions.h"
#pragma warning(push)
#pragma warning(disable:4312) // warning C4312: 'type cast' : conversion from 'LONG' to 'PVOID' of greater size
// ñòðóêòóðà äëÿ ðàáîòû ñî ñïèñêîì, ýëåìåíò ñïèñêà
typedef struct _LIST_MT_ITEM
{
#ifdef __cplusplus
_LIST_MT_ITEM *plmtiPrev; // *ïðåäûäóùèé ýëåìåíò â ñïèñêå
_LIST_MT_ITEM *plmtiNext; // *ñëåäóþùèé ýëåìåíò â ñïèñêå
#else
LPVOID *plmtiPrev; // *ïðåäûäóùèé ýëåìåíò â ñïèñêå
LPVOID *plmtiNext; // *ñëåäóþùèé ýëåìåíò â ñïèñêå
#endif
LPVOID lpListMT; // óêàçàòåëü íà çàãîëîâîê ñïèñêà, ñì ñòðóêòóðó íèæå
LPVOID lpData; // óêàçàòåëü íà äàííûå, ñâÿçàííûå ñ ýëåìåíòîì ñïèñêà
}LIST_MT_ITEM, *PLIST_MT_ITEM, *LPLIST_MT_ITEM;
typedef CONST PLIST_MT_ITEM PCLIST_MT_ITEM, LPCLIST_MT_ITEM;
// ñòðóêòóðà äëÿ ðàáîòû ñî ñïèñêîì, çàãîëîâîê ñïèñêà
typedef struct _LIST_MT
{
size_t nCount; // *êîëëè÷åñòâî ýëåìåíòîâ â ñïèñêå
PLIST_MT_ITEM plmtiFirst; // *óêàçûâàåò íà ïåðâûé ýëåìåíò â ñïèñêå
PLIST_MT_ITEM plmtiLast; // *óêàçûâàåò íà ïîñëåäíèé ýëåìåíò â ñïèñêå
CRITICAL_SECTION cs; // *section for exclysive access to List
}LIST_MT, *PLIST_MT, *LPLIST_MT;
typedef CONST PLIST_MT PCLIST_MT, LPCLIST_MT;
// ñòðóêòóðà äëÿ ðàáîòû ñ èòåðàòîðîì
typedef struct _LIST_MT_ITERATOR
{
PLIST_MT_ITEM plmtListMTItem;
}LIST_MT_ITERATOR, *PLIST_MT_ITERATOR, *LPLIST_MT_ITERATOR;
//typedef LIST_MT_ITEM LIST_MT_ITERATOR, *PLIST_MT_ITERATOR, *LPLIST_MT_ITERATOR;
typedef CONST PLIST_MT_ITERATOR PCLIST_MT_ITERATOR, LPCLIST_MT_ITERATOR;
__inline DWORD ListMTInitialize(PCLIST_MT pclmtListMT,DWORD dwSpinCount)
{
DWORD dwRetErrorCode;
#if (_WIN32_WINNT >= 0x0403)
if (InitializeCriticalSectionAndSpinCount(&pclmtListMT->cs,((dwSpinCount)? (dwSpinCount | 0x80000000):0L)))
#else
InitializeCriticalSection(&pclmtListMT->cs);
if (TRUE)
#endif
{
InterlockedExchangePointer((volatile PVOID*)&pclmtListMT->nCount,NULL);
pclmtListMT->plmtiFirst=NULL;
pclmtListMT->plmtiLast=NULL;
dwRetErrorCode=NO_ERROR;
}else{
dwRetErrorCode=GetLastError();
}
return(dwRetErrorCode);
}
__inline void ListMTDestroy(PCLIST_MT pclmtListMT)
{
InterlockedExchangePointer((volatile PVOID*)&pclmtListMT->nCount,NULL);
pclmtListMT->plmtiFirst=NULL;
pclmtListMT->plmtiLast=NULL;
DeleteCriticalSection(&pclmtListMT->cs);
SecureZeroMemory(&pclmtListMT->cs,sizeof(CRITICAL_SECTION));
}
class mt_lock
{
PCLIST_MT m_list;
public:
__forceinline mt_lock(PCLIST_MT _pList) :
m_list( _pList )
{ EnterCriticalSection(&_pList->cs);
}
__forceinline ~mt_lock()
{ LeaveCriticalSection(&m_list->cs);
}
};
__inline size_t ListMTGetCount(PCLIST_MT pclmtListMT)
{
return((size_t)InterlockedCompareExchangePointer((LPVOID*)&pclmtListMT->nCount,NULL,NULL));
}
__inline size_t ListMTItemAdd(PCLIST_MT pclmtListMT,PCLIST_MT_ITEM pclmtListMTItem,LPVOID lpData)
{
size_t dwRet=(size_t)InterlockedIncrementPointer(&pclmtListMT->nCount);//pclmtListMT->nCount++;
pclmtListMTItem->lpData=lpData;
pclmtListMTItem->lpListMT=pclmtListMT;
if (pclmtListMT->plmtiLast)
{// add node to end of list
pclmtListMTItem->plmtiPrev=pclmtListMT->plmtiLast;
pclmtListMTItem->plmtiNext=NULL;
pclmtListMT->plmtiLast->plmtiNext=pclmtListMTItem;
pclmtListMT->plmtiLast=pclmtListMTItem;
}else{// add the first node to the linked list
pclmtListMTItem->plmtiPrev=NULL;
pclmtListMTItem->plmtiNext=NULL;
pclmtListMT->plmtiFirst=pclmtListMTItem;
pclmtListMT->plmtiLast=pclmtListMTItem;
}
return(dwRet);
}
__inline DWORD ListMTItemDelete(PCLIST_MT pclmtListMT,PCLIST_MT_ITEM pclmtListMTItem)
{
DWORD dwRetErrorCode;
if (pclmtListMTItem->lpListMT==pclmtListMT && pclmtListMT)
{// Äàííûé ýëåìåíò ïðèíàäëåæèò ê ýòîìó ñïèñêó, ìîæíî óäàëèòü.
PLIST_MT_ITEM plmtiPrevNode=pclmtListMTItem->plmtiPrev,plmtiNextNode=pclmtListMTItem->plmtiNext;
if (plmtiPrevNode || plmtiNextNode)
{
if (plmtiPrevNode && plmtiNextNode==NULL)
{// This is the start node in the list to delete
// îòêëþ÷èëñÿ ïîñëåäíèé ïîäêëþ÷èâøèéñÿ
plmtiPrevNode->plmtiNext=NULL;
pclmtListMT->plmtiLast=plmtiPrevNode;
}else{
if (plmtiPrevNode==NULL && plmtiNextNode)
{// This is the end node in the list to delete
// îòêëþ÷èëñÿ ïåðâûé ïîäêëþ÷èâøèéñÿ
plmtiNextNode->plmtiPrev=NULL;
pclmtListMT->plmtiFirst=plmtiNextNode;
}else{// îêëþ÷èëñÿ êëèåíò íå ïåðâûé è íå ïîñëåäíèé
//if (plmtiPrev && plmtiNext)
{// Neither start node nor end node in the list
plmtiPrevNode->plmtiNext=plmtiNextNode;
plmtiNextNode->plmtiPrev=plmtiPrevNode;
}
}
}
}else{// This is the only node in the list to delete
pclmtListMT->plmtiFirst=NULL;
pclmtListMT->plmtiLast=NULL;
}
pclmtListMTItem->lpListMT=NULL;
InterlockedDecrementPointer(&pclmtListMT->nCount);// pclmtListMT->nCount--;
dwRetErrorCode=NO_ERROR;
}else{// ïîïûòàëèñü óäàëèòü ýëåìåíò íå îòíîñÿùèéñÿ ê äàííîìó ñïèñêó
dwRetErrorCode=ERROR_INVALID_HANDLE;
}
return(dwRetErrorCode);
}
__inline DWORD ListMTItemGetFirst(PCLIST_MT pclmtListMT,PLIST_MT_ITEM *pplmtListMTItem,LPVOID *plpData)
{// åñëè íóæíî ãàðàíòèðîâàòü ýêñêëþçèâíûé äîñòóï, òî åñòü ListMTLock è ListMTUnLock
DWORD dwRetErrorCode;
if (pclmtListMT->plmtiFirst)
{
if (pplmtListMTItem) (*pplmtListMTItem)=pclmtListMT->plmtiFirst;
if (plpData) (*plpData)=pclmtListMT->plmtiFirst->lpData;
dwRetErrorCode=NO_ERROR;
}else{
dwRetErrorCode=ERROR_NO_MORE_ITEMS;
}
return(dwRetErrorCode);
}
__inline BOOL ListMTIteratorMoveFirst(PCLIST_MT pclmtListMT,PCLIST_MT_ITERATOR pclmtiIterator)
{// åñëè íóæíî ãàðàíòèðîâàòü ýêñêëþçèâíûé äîñòóï, òî åñòü ListMTLock è ListMTUnLock
return((pclmtiIterator->plmtListMTItem=pclmtListMT->plmtiFirst)? TRUE:FALSE);
}
__inline BOOL ListMTIteratorMoveNext(PCLIST_MT_ITERATOR pclmtiIterator)
{// åñëè íóæíî ãàðàíòèðîâàòü ýêñêëþçèâíûé äîñòóï, òî åñòü ListMTLock è ListMTUnLock
BOOL bRet=FALSE;
if (pclmtiIterator->plmtListMTItem)
{
if (pclmtiIterator->plmtListMTItem=pclmtiIterator->plmtListMTItem->plmtiNext) bRet=TRUE;
}
return(bRet);
}
__inline DWORD ListMTIteratorGet(PCLIST_MT_ITERATOR pclmtiIterator,PLIST_MT_ITEM *pplmtListMTItem,LPVOID *plpData)
{// åñëè íóæíî ãàðàíòèðîâàòü ýêñêëþçèâíûé äîñòóï, òî åñòü ListMTLock è ListMTUnLock
DWORD dwRetErrorCode;
if (pclmtiIterator->plmtListMTItem)
{
if (pplmtListMTItem) (*pplmtListMTItem)=pclmtiIterator->plmtListMTItem;
if (plpData) (*plpData)=pclmtiIterator->plmtListMTItem->lpData;
dwRetErrorCode=NO_ERROR;
}else{
dwRetErrorCode=ERROR_NO_MORE_ITEMS;
}
return(dwRetErrorCode);
}
#pragma warning(pop)
#pragma warning(default:4312) // warning C4312: 'type cast' : conversion from 'LONG' to 'PVOID' of greater size
#endif // !defined(AFX_LIST_MT__H__INCLUDED_)
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