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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@27862 72102866-910b-0410-8b05-ffd578937521
93 lines
2.6 KiB
Objective-C
93 lines
2.6 KiB
Objective-C
/**Interface for NSConcretePointerFunctions for GNUStep
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Copyright (C) 2009 Free Software Foundation, Inc.
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Written by: Richard Frith-Macdonald <rfm@gnu.org>
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Date: 2009
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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/NSPointerFunctions.h"
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@interface NSConcretePointerFunctions : NSPointerFunctions
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{
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@public
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NSUInteger _options;
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void* (*_acquireFunction)(const void *item,
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NSUInteger (*size)(const void *item), BOOL shouldCopy);
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NSString *(*_descriptionFunction)(const void *item);
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NSUInteger (*_hashFunction)(const void *item,
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NSUInteger (*size)(const void *item));
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BOOL (*_isEqualFunction)(const void *item1, const void *item2,
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NSUInteger (*size)(const void *item));
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void (*_relinquishFunction)(const void *item,
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NSUInteger (*size)(const void *item));
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NSUInteger (*_sizeFunction)(const void *item);
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BOOL _shouldCopyIn;
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BOOL _usesStrongWriteBarrier;
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BOOL _usesWeakReadAndWriteBarriers;
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}
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@end
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/* Macros to make use of the pointer functions.
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*/
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/* Acquire the pointer value to store for the specified item.
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*/
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#define GSPFAcquire(PF,Item) \
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(*(PF)->_acquireFunction)(Item, (PF)->_sizeFunction, (PF)->shouldCopyIn)
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/* Generate an NSString description of the item
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*/
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#define GSPFDescribe(PF,Item) (*(PF)->_acquireFunction)(Item)
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/* Generate the hash of the item
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*/
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#define GSPFHash(PF,Item) (*(PF)->_hashFunction)(Item, (PF)->_sizeFunction)
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/* Compare two items for equality
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*/
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#define GSPFIsEqual(PF,Item1, Item2) \
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(*(PF)->_isEqualFunction)(Item1, Item2, (PF)->_sizeFunction)
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/* Relinquish the specified item and set it to zero.
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*/
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#define GSPFRelinquish(PF,Item) ({ \
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if ((PF)->_relinquishFunction != 0) \
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(*(PF)->_relinquishFunction)(Item, (PF)->_sizeFunction); \
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if ((PF)->usesWeakReadAndWriteBarriers) \
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GSAssignZeroingWeakPointer((void**)&Item, (void*)0); \
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else \
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Item = 0; \
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})
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