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include
qore
QoreReferenceCounter.h
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/* -*- mode: c++; indent-tabs-mode: nil -*- */
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/*
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QoreReferenceCounter.h
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Qore Programming Language
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Copyright (C) 2003 - 2013 David Nichols, all rights reserved
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _QORE_QOREREFERENCECOUNTER_H
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#define _QORE_QOREREFERENCECOUNTER_H
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#include <
qore/common.h
>
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#include <qore/macros.h>
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class
QoreThreadLock
;
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class
QoreReferenceCounter
{
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protected
:
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mutable
int
references;
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#ifndef HAVE_ATOMIC_MACROS
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mutable
QoreThreadLock
mRO
;
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#endif
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public
:
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DLLEXPORT
QoreReferenceCounter
();
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DLLEXPORT
~QoreReferenceCounter
();
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DLLLOCAL
int
reference_count
()
const
{
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return
references;
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}
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DLLLOCAL
bool
is_unique
()
const
{
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return
references == 1;
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}
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DLLEXPORT
void
ROreference
()
const
;
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DLLEXPORT
bool
ROdereference
()
const
;
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};
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#endif // _QORE_QOREREFERENCECOUNTER_H