forked from OSchip/llvm-project
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/*
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* Block.h
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*
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* Copyright 2008-2010 Apple, Inc. Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to permit
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* persons to whom the Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef _BLOCK_H_
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#define _BLOCK_H_
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#if !defined(BLOCK_EXPORT)
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# if defined(__cplusplus)
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# define BLOCK_EXPORT extern "C"
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# else
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# define BLOCK_EXPORT extern
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# endif
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Create a heap based copy of a Block or simply add a reference to an existing one.
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* This must be paired with Block_release to recover memory, even when running
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* under Objective-C Garbage Collection.
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*/
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BLOCK_EXPORT void *_Block_copy(const void *aBlock);
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/* Lose the reference, and if heap based and last reference, recover the memory. */
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BLOCK_EXPORT void _Block_release(const void *aBlock);
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#if defined(__cplusplus)
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}
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#endif
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/* Type correct macros. */
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#define Block_copy(...) ((__typeof(__VA_ARGS__))_Block_copy((const void *)(__VA_ARGS__)))
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#define Block_release(...) _Block_release((const void *)(__VA_ARGS__))
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#endif
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