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https://bitbucket.org/smil3y/kdelibs.git
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80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
/*
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* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
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*
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef RefCounted_h
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#define RefCounted_h
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#include <wtf/Assertions.h>
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#include <wtf/Noncopyable.h>
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namespace WTF {
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template<class T> class RefCounted : Noncopyable {
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public:
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RefCounted(int initialRefCount = 1)
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: m_refCount(initialRefCount)
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#ifndef NDEBUG
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, m_deletionHasBegun(false)
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#endif
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{
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}
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void ref()
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{
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ASSERT(!m_deletionHasBegun);
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++m_refCount;
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}
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void deref()
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{
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ASSERT(!m_deletionHasBegun);
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ASSERT(m_refCount > 0);
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if (m_refCount == 1) {
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#ifndef NDEBUG
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m_deletionHasBegun = true;
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#endif
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delete static_cast<T*>(this);
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} else
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--m_refCount;
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}
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bool hasOneRef()
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{
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ASSERT(!m_deletionHasBegun);
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return m_refCount == 1;
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}
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int refCount() const
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{
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return m_refCount;
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}
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private:
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int m_refCount;
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#ifndef NDEBUG
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bool m_deletionHasBegun;
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#endif
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};
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} // namespace WTF
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using WTF::RefCounted;
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#endif // RefCounted_h
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