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Diffstat (limited to 'include/salhelper/refobj.hxx')
-rw-r--r-- | include/salhelper/refobj.hxx | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/include/salhelper/refobj.hxx b/include/salhelper/refobj.hxx new file mode 100644 index 000000000..65e636e12 --- /dev/null +++ b/include/salhelper/refobj.hxx @@ -0,0 +1,98 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_SALHELPER_REFOBJ_HXX +#define INCLUDED_SALHELPER_REFOBJ_HXX + +#include <cassert> + +#include "sal/types.h" +#include "rtl/alloc.h" +#include "osl/interlck.h" + +namespace salhelper +{ + +/** A base implementation for reference-counted objects. + + @deprecated use salhelper::SimpleReferenceObject instead +*/ +class ReferenceObject +{ + /** Representation. + */ + oslInterlockedCount m_nReferenceCount; + + ReferenceObject (const ReferenceObject&) SAL_DELETED_FUNCTION; + ReferenceObject& operator= (const ReferenceObject&) SAL_DELETED_FUNCTION; + +public: + /** Allocation. + */ + static void* operator new (size_t n) + { + return ::rtl_allocateMemory (n); + } + static void operator delete (void* p) + { + ::rtl_freeMemory (p); + } + static void* operator new (size_t, void* p) + { + return p; + } + static void operator delete (void*, void*) + {} + +public: + /** Construction. + */ + ReferenceObject() : m_nReferenceCount(0) + {} + + + void SAL_CALL acquire() + { + osl_atomic_increment(&m_nReferenceCount); + } + + void SAL_CALL release() + { + if (osl_atomic_decrement(&m_nReferenceCount) == 0) + { + // Last reference released. + delete this; + } + } + +protected: + /** Destruction. + */ + virtual ~ReferenceObject() + { + assert(m_nReferenceCount == 0); + } +}; + + +} // namespace salhelper + +#endif /* ! INCLUDED_SALHELPER_REFOBJ_HXX */ + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |