Leaked source code of windows server 2003
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// CounterMgr.cpp: implementation of the CCounterMgr class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "CounterMgr.h"
#include <algorithm>
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
// Using Singleton to assure initialization
CCounterMgr* Get_g_CounterMgr()
{
static CCounterMgr g_CounterMgr;
return &g_CounterMgr;
}
//////////////////////////////////////////////////////////////////////
// CCounterMgr class implementation
//////////////////////////////////////////////////////////////////////
CAbstractCounter* CCounterMgr::Exists(const CCounterLocation& location) const
{
CAbstractCounter* ret = NULL;
for (vector<CAbstractCounter*>::const_iterator i = m_arrCounterPool.begin(); i != m_arrCounterPool.end(); i++)
{
if ((CCounterLocation&)location == **i) {
ret = *i;
break;
}
}
return ret;
}
bool CCounterMgr::RemoveLocation(const CCounterLocation& location)
{
bool ret = false;
CAbstractCounter* found = NULL;
LOCKOBJECT();
if (NULL != (found = Exists(location)))
{
vector<CAbstractCounter*>::iterator i = find(m_arrCounterPool.begin(), m_arrCounterPool.end(), found);
if (i != m_arrCounterPool.end())
{
m_arrCounterPool.erase(i);
ret = true;
}
}
UNLOCKOBJECT();
return ret;
}
bool CCounterMgr::Add(const CAbstractCounter& counter)
{
bool ret = false;
LOCKOBJECT();
if (!Exists(counter)) {
m_arrCounterPool.push_back((CAbstractCounter*)&counter);
ret = true;
}
UNLOCKOBJECT();
return ret;
}
void CCounterMgr::AddSubstitute(const CAbstractCounter& counter)
{
LOCKOBJECT();
RemoveLocation(counter);
m_arrCounterPool.push_back((CAbstractCounter*)&counter);
UNLOCKOBJECT();
}
bool CCounterMgr::Remove(const CAbstractCounter& counter)
{
bool ret = false;
LOCKOBJECT();
vector<CAbstractCounter*>::iterator i = find(m_arrCounterPool.begin(), m_arrCounterPool.end(), &counter);
if (i != m_arrCounterPool.end())
{
m_arrCounterPool.erase(i);
ret = true;
}
UNLOCKOBJECT();
return ret;
}
CAbstractCounter* CCounterMgr::Get(const CCounterLocation& location) const
{
CAbstractCounter* ret = NULL;
LOCKOBJECT();
ret = Exists(location);
UNLOCKOBJECT();
return ret;
}