Ichthyostega
0c4495a451
- simple function to pick up the mangled type - pretty-printing is implemented in format-obj.cpp - also move the demangleCxx()-Function to that location, it starts to be used for real, outside the test framework
86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/*
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UNIQUE-MALLOC-OWNER.hpp - automatic management of C-malloced memory
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Copyright (C) Lumiera.org
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2014, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file unique-malloc-owner.hpp
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** Helper to deal with C-MALLOCed memory automatically.
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** This solution is a simple dress-up of std::unique_ptr,
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** mostly for the purpose of documenting the issue at the
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** usage site.
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**
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** @see lib::meta::demangleCxx
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** @see UniqueMallocOwner_test
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**
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*/
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#ifndef LIB_UNIQUE_MALLOC_OWNER_H
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#define LIB_UNIQUE_MALLOC_OWNER_H
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#include "lib/error.hpp"
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#include <memory>
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namespace lib {
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/**
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* Ownership token for a piece of heap memory allocated in plain-C style.
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* This smart ptr takes ownership of the memory given at construction,
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* to make sure it is deallocated properly with \c free(void*).
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* Ownership can be transferred by move semantics.
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* @remarks \c std::free is installed as deleter function,
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* which means we're carrying along an additional pointer
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*/
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template<class X =void>
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class UniqueMallocOwner
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: public std::unique_ptr<X, void(*)(void*)>
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{
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using _Parent = std::unique_ptr<X, void(*)(void*)>;
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public:
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explicit
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UniqueMallocOwner(void* memory =nullptr)
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: _Parent(static_cast<X*>(memory), std::free)
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{ }
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explicit
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UniqueMallocOwner(X* alloc)
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: _Parent(alloc, std::free)
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{ }
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bool
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empty() const
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{
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return ! bool(*this);
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}
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};
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} // namespace lib
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#endif /*LIB_UNIQUE_MALLOC_OWNER_H*/
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