/usr/include/CGAL/Kinetic/Ref_counted.h is in libcgal-dev 4.11-2build1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | // Copyright (c) 2005 Stanford University (USA).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); 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 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Daniel Russel <drussel@alumni.princeton.edu>
#ifndef CGAL_REF_COUNTED_H
#define CGAL_REF_COUNTED_H
#include <CGAL/Kinetic/basic.h>
#include <boost/intrusive_ptr.hpp>
#include <boost/utility.hpp>
//#define NEW_REF_COUNTED
namespace CGAL { namespace Kinetic { namespace internal {
class Ref_counted_base;
void intrusive_ptr_add_ref(const Ref_counted_base *t);
void intrusive_ptr_release(const Ref_counted_base *t);
class Ref_counted_base: boost::noncopyable
{
typedef Ref_counted_base This;
public:
Ref_counted_base() : reference_count_(0) {}
void write(std::ostream &out) const
{
out << "(" << reference_count_ << ")";
}
bool is_referenced() const
{
return reference_count_ != 0;
}
virtual ~Ref_counted_base() CGAL_NOEXCEPT(CGAL_NO_ASSERTIONS_BOOL)
{
CGAL_destructor_assertion(reference_count_==0);
}
friend void intrusive_ptr_release(const This *t);
friend void intrusive_ptr_add_ref(const This *t);
unsigned int reference_count() const {return reference_count_;}
void new_ref() const { ++reference_count_; }
void delete_ref() const
{
CGAL_precondition(reference_count_!=0);
--reference_count_;
}
mutable unsigned int reference_count_;
};
inline void intrusive_ptr_add_ref(const Ref_counted_base *t)
{
t->new_ref();
}
inline void intrusive_ptr_release(const Ref_counted_base *t)
{
t->delete_ref();
if (t->reference_count() == 0) {
delete t;
}
}
struct Non_ref_counted_base{};
inline void intrusive_ptr_add_ref(const Non_ref_counted_base *)
{
}
inline void intrusive_ptr_release(const Non_ref_counted_base *)
{
}
} } } //namespace CGAL::Kinetic::internal
namespace CGAL { namespace Kinetic {
template <class T>
class Ref_counted: public internal::Ref_counted_base
{
typedef internal::Ref_counted_base P;
public:
typedef T This;
typedef typename boost::intrusive_ptr<T> Handle;
typedef typename boost::intrusive_ptr<const T> Const_handle;
};
template <class T>
struct Non_ref_counted: public internal::Non_ref_counted_base
{
typedef T This;
typedef typename boost::intrusive_ptr<T> Handle;
typedef typename boost::intrusive_ptr<const T> Const_handle;
};
} } //namespace CGAL::Kinetic
#endif
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