/usr/include/buffy/utils/smartpointer.h is in libbuffy-dev 1.9.2-2.
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 | #ifndef BUFFY_UTILS_SMART_POINTER_H
#define BUFFY_UTILS_SMART_POINTER_H
/*
* Copyright (C) 2004--2008 Enrico Zini <enrico@enricozini.org>
*
* 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
*/
namespace buffy {
template<class ITEM>
class SmartPointer
{
protected:
ITEM* impl;
public:
SmartPointer() throw () : impl(0) {}
SmartPointer(const SmartPointer& sp) throw ()
{
if (sp.impl)
sp.impl->ref();
impl = sp.impl;
}
SmartPointer(ITEM* otherimpl) throw ()
{
if (otherimpl)
otherimpl->ref();
impl = otherimpl;
}
~SmartPointer() throw ()
{
if (impl && impl->unref())
delete impl;
}
SmartPointer& operator=(const SmartPointer& sp) throw ()
{
if (sp.impl)
sp.impl->ref(); // Do it early to correctly handle the case of x = x;
if (impl && impl->unref())
delete impl;
impl = sp.impl;
return *this;
}
operator bool() const throw () { return impl != 0; }
};
class SmartPointerItem
{
protected:
int _ref;
public:
SmartPointerItem() throw () : _ref(0) {}
/// Increment the reference count for this object
void ref() throw () { ++_ref; }
/// Decrement the reference count for this object, returning true when it
/// reaches 0
bool unref() throw () { return --_ref == 0; }
};
}
// vim:set ts=3 sw=3:
#endif
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