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/*
* $Id: VirtualDeleteOperator.cc,v 1.2 2004/08/15 17:41:28 robertc Exp $
*
* AUTHOR: Robert Collins
*
* SQUID Web Proxy Cache http://www.squid-cache.org/
* ----------------------------------------------------------
*
* Squid is the result of efforts by numerous individuals from
* the Internet community; see the CONTRIBUTORS file for full
* details. Many organizations have provided support for Squid's
* development; see the SPONSORS file for full details. Squid is
* Copyrighted (C) 2001 by the Regents of the University of
* California; see the COPYRIGHT file for full details. Squid
* incorporates software developed and/or copyrighted by other
* sources; see the CREDITS file for full details.
*
* 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, USA.
*
* Copyright (c) 2003 Robert Collins <robertc@squid-cache.org>
*/
#include "squid.h"
#include <iostream>
class CallCounter {
public:
CallCounter();
void recordNew();
void recordDelete();
size_t news() const;
size_t deletes() const;
private:
size_t _news, _deletes;
};
CallCounter::CallCounter() : _news(0), _deletes(0) {}
void CallCounter::recordNew() { ++_news;}
void CallCounter::recordDelete() { ++_deletes;}
size_t CallCounter::news() const {return _news;}
size_t CallCounter::deletes() const {return _deletes;}
class BaseVirtual {
public:
void *operator new (size_t);
void operator delete (void *);
virtual ~BaseVirtual();
static void DeleteABase(BaseVirtual *aBase);
static CallCounter Calls;
};
CallCounter BaseVirtual::Calls;
void *
BaseVirtual::operator new(size_t byteCount)
{
Calls.recordNew();
return ::operator new (byteCount);
}
void
BaseVirtual::operator delete(void *address)
{
Calls.recordDelete();
::operator delete (address);
}
void
BaseVirtual::DeleteABase(BaseVirtual *aBase)
{
delete aBase;
}
BaseVirtual::~BaseVirtual(){}
class ChildVirtual : public BaseVirtual {
public:
void *operator new (size_t);
void operator delete (void *);
virtual ~ChildVirtual();
static CallCounter Calls;
};
CallCounter ChildVirtual::Calls;
void *
ChildVirtual::operator new(size_t byteCount)
{
Calls.recordNew();
return ::operator new (byteCount);
}
void
ChildVirtual::operator delete(void *address)
{
Calls.recordDelete();
::operator delete (address);
}
ChildVirtual::~ChildVirtual(){}
int
main (int argc, char *argv)
{
assert (BaseVirtual::Calls.news() == 0);
assert (BaseVirtual::Calls.deletes() == 0);
assert (ChildVirtual::Calls.news() == 0);
assert (ChildVirtual::Calls.deletes() == 0);
BaseVirtual *aBase = new ChildVirtual;
assert (BaseVirtual::Calls.news() == 0);
assert (BaseVirtual::Calls.deletes() == 0);
assert (ChildVirtual::Calls.news() == 1);
assert (ChildVirtual::Calls.deletes() == 0);
BaseVirtual::DeleteABase(aBase);
assert (BaseVirtual::Calls.news() == 0);
assert (BaseVirtual::Calls.deletes() == 0);
assert (ChildVirtual::Calls.news() == 1);
assert (ChildVirtual::Calls.deletes() == 1);
// deleting NULL works.
BaseVirtual::DeleteABase(NULL);
assert (BaseVirtual::Calls.news() == 0);
assert (BaseVirtual::Calls.deletes() == 0);
assert (ChildVirtual::Calls.news() == 1);
assert (ChildVirtual::Calls.deletes() == 1);
return 0;
}
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