jpointer.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "Stdafx.h"
#include "jpointer.h"
namespace jcommon {
ReferenceCounter *ReferenceCounter::_instance = NULL;
ReferenceCounter::ReferenceCounter()
{
}
ReferenceCounter *ReferenceCounter::getInstance()
{
if (_instance == NULL) {
_instance = new ReferenceCounter();
}
return _instance;
}
void ReferenceCounter::Allocate(void *p)
{
if (p == NULL) {
return;
}
if (_counter.count(p) == 0) {
_counter[p] = 0;
}
_counter[p]++;
}
void ReferenceCounter::Free(void *p)
{
if (!HasReference(p)) {
return;
}
_counter[p]--;
if (_counter[p] == 0) {
_counter.erase(p);
}
}
bool ReferenceCounter::HasReference(void *p)
{
return (p != NULL) && (_counter.count(p) > 0);
}
}