71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* Block.h
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*
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* Copyright (c) 2008-2010 Apple Inc. All rights reserved.
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*
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* @APPLE_LLVM_LICENSE_HEADER@
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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 __has_include(<Availability.h>)
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#include <Availability.h>
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#else
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#define __OSX_AVAILABLE_STARTING(m,i)
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#endif
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#include <TargetConditionals.h>
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#include <sys/cdefs.h>
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#if __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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BLOCK_EXPORT void *__single _Block_copy(const void *__single aBlock)
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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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 *__single aBlock)
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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// Used by the compiler. Do not call this function yourself.
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BLOCK_EXPORT void _Block_object_assign(void *, const void *, const int)
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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// Used by the compiler. Do not call this function yourself.
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BLOCK_EXPORT void _Block_object_dispose(const void *, const int)
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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// Used by the compiler. Do not use these variables yourself.
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BLOCK_EXPORT void * _NSConcreteGlobalBlock[32]
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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BLOCK_EXPORT void * _NSConcreteStackBlock[32]
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__OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
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#if __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(__unsafe_forge_single(const void *, (const void *)(__VA_ARGS__))))
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#define Block_release(...) _Block_release(__unsafe_forge_single(const void *, (const void *)(__VA_ARGS__)))
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#endif
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