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52 lines
2.1 KiB
Objective-C
52 lines
2.1 KiB
Objective-C
/** Declaration of extension methods for base additions
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Copyright (C) 2003-2010 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdonald <rfm@gnu.org>
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and: Adam Fedor <fedor@gnu.org>
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This file is part of the GNUstep Base Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02111 USA.
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*/
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#import <Foundation/NSObject.h>
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#if !defined (GNUSTEP)
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#import "GNUstep.h"
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#endif
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@class NSHashTable;
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@interface NSObject(MemoryFootprint)
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/* This method returns the memory usage of the receiver, excluding any
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* objects already present in the exclude table.<br />
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* The argument is a hash table configured to hold non-retained pointer
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* objects and is used to inform the receiver that its size should not
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* be counted again if it's already in the table.<br />
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* The NSObject implementation returns zero if the receiver is in the
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* table, but otherwise adds itself to the table and returns its memory
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* footprint (the sum of all of its instance variables, but not any
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* memory pointed to by those variables).<br />
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* Subclasses should override this method by calling the superclass
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* implementation, and either return the result (if it was zero) or
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* return that value plus the sizes of any memory owned by the receiver
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* (eg found by calling the same method on objects pointed to by the
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* receiver's instance variables).
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*/
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- (NSUInteger) sizeInBytesExcluding: (NSHashTable*)exclude;
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@end
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