warsmartpointer.cpp

来自「ftpserver very good sample」· C++ 代码 · 共 66 行

#include "StdAfx.h"
#include <assert.h>
#include "WarSmartPointer.h"   // class implemented
#include "WarCriticalSection.h"
#include "WarAutoLock.h"

#ifndef WAR_PERFMON_DEF_H
#   include "WarPerfmonDef.h"
#endif

// Constants
WarCriticalSection *WarSmartPointer::mspLock;

#define AUTO_LOCK WarAutoLock MyLock(*mspLock);

/////////////////////////////// PUBLIC ///////////////////////////////////////

//============================= LIFECYCLE ====================================

WarSmartPointer::WarSmartPointer()
: mRefCnt(0)
{
    WAR_DB_PERFMON_INC(WAR_PRFDEBUG_NUM_AUTOPTR);
}// WarSmartPointer

WarSmartPointer::~WarSmartPointer()
{
    WAR_DB_PERFMON_DEC(WAR_PRFDEBUG_NUM_AUTOPTR);
}// ~WarSmartPointer

//============================= OPERATORS ====================================
//============================= OPERATIONS ===================================

void WarSmartPointer::Initialize()
{
    if (!mspLock)
        mspLock = new WarCriticalSection;
}

void WarSmartPointer::Attach()
{
    AUTO_LOCK
    ++mRefCnt;
}

void WarSmartPointer::Detach()
{
    {
        AUTO_LOCK
        if (--mRefCnt <= 0)
            goto destroy_me; // We can not die when the lock is active
    }

    return;
    
destroy_me:
    delete this;
}

//============================= ACESS      ===================================
//============================= INQUIRY    ===================================
/////////////////////////////// PROTECTED  ///////////////////////////////////

/////////////////////////////// PRIVATE    ///////////////////////////////////