/usr/include/libmesh/reference_counted_object.h is in libmesh-dev 0.7.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | // $Id: reference_counted_object.h 4342 2011-04-13 14:22:17Z jwpeterson $
// The libMesh Finite Element Library.
// Copyright (C) 2002-2008 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// This library 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 for more details.
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef __reference_counted_object_h__
#define __reference_counted_object_h__
// C++ includes
#include <typeinfo>
// Local includes
#include "reference_counter.h"
namespace libMesh
{
/**
* This class implements reference counting. Any class that
* is properly derived from this class will get reference counted, provided
* that the library is configured with \p --enable-reference-counting
* and you are compiling with \p DEBUG defined.
* For example, the following is sufficient to define the class \p Foo
* as a reference counted class:
*
* \code
* class Foo : public ReferenceCountedObject<Foo>
* {
* public:
*
* Foo () {}
*
* ~Foo () {}
*
* void bar ();
*
* private:
* };
*
* \endcode
*
* \par
* If the library is configured with \p --disable-reference-counting
* or \p DEBUG is not defined then this class does nothing.
* All members are inlined and empty, so they should effectively disappear.
*
* \author Benjamin S. Kirk, 2002-2007
*/
// ------------------------------------------------------------
// ReferenceCounter class definition
template <typename T>
class ReferenceCountedObject : public ReferenceCounter
{
protected:
/**
* Constructor. Protected so that you cannont
* instantiate a \p ReferenceCountedObject, only derive
* from it.
*/
ReferenceCountedObject ()
{
#if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)
increment_constructor_count(typeid(T).name());
#endif
}
/**
* Also, increment the counter if the copy-constructor is called.
*/
ReferenceCountedObject (const ReferenceCountedObject& other)
: ReferenceCounter(other)
{
#if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)
increment_constructor_count(typeid(T).name());
#endif
}
public:
/**
* Destructor.
*/
virtual ~ReferenceCountedObject ()
{
#if defined(LIBMESH_ENABLE_REFERENCE_COUNTING) && defined(DEBUG)
increment_destructor_count(typeid(T).name());
#endif
}
private:
};
} // namespace libMesh
#endif // end #ifndef __reference_counted_object_h__
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