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/* Protocol for Objective-C objects that keep a reference count Copyright (C) 1993 Free Software Foundation, Inc. Written by: R. Andrew McCallum <mccallum@cs.rochester.edu> Dept. of Computer Science, U. of Rochester, Rochester, NY 14627 This file is part of the GNU Objective-C Collection library. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __ReferenceCounting_h_INCLUDE_GNU #define __ReferenceCounting_h_INCLUDE_GNU @protocol ReferenceCounting // QUERY REFERENCE COUNT; - (unsigned) references; // INCREMENT REFERENCE COUNT, RETURN SELF; - addReference; // DECREMENT REFERENCE COUNT, FREE IF ZERO; - free; @end #endif /* __ReferenceCounting_h_INCLUDE_GNU */
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