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Diffstat (limited to 'canvas/inc/canvas/base/basemutexhelper.hxx')
-rw-r--r-- | canvas/inc/canvas/base/basemutexhelper.hxx | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/canvas/inc/canvas/base/basemutexhelper.hxx b/canvas/inc/canvas/base/basemutexhelper.hxx new file mode 100644 index 000000000000..787c200e0b0c --- /dev/null +++ b/canvas/inc/canvas/base/basemutexhelper.hxx @@ -0,0 +1,69 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef INCLUDED_CANVAS_BASEMUTEXHELPER_HXX +#define INCLUDED_CANVAS_BASEMUTEXHELPER_HXX + +#include <osl/mutex.hxx> + + +/* Definition of the BaseMutexHelper class */ + +namespace canvas +{ + /** Base class, deriving from ::comphelper::OBaseMutex and + initializing its own baseclass with m_aMutex. + + This is necessary to make the CanvasBase, GraphicDeviceBase, + etc. classes freely combinable - letting them perform this + initialization would prohibit deriving e.g. CanvasBase from + GraphicDeviceBase. + */ + template< class Base > class BaseMutexHelper : public Base + { + public: + typedef Base BaseType; + + /** Construct BaseMutexHelper + + This method is the whole purpose of this template: + initializing a base class with the provided m_aMutex + member (the WeakComponentImplHelper templates need that, + as they require the lifetime of the mutex to extend + theirs). + */ + BaseMutexHelper() : + BaseType( m_aMutex ) + { + } + +protected: + mutable ::osl::Mutex m_aMutex; + }; +} + +#endif /* INCLUDED_CANVAS_BASEMUTEXHELPER_HXX */ |