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/*
* Block.h
*
* Copyright (c) 2008-2010 Apple Inc. All rights reserved.
*
* @APPLE_LLVM_LICENSE_HEADER@
*
*/
#ifndef _Block_H_
#define _Block_H_
#if !defined(BLOCK_EXPORT)
# if defined(__cplusplus)
# define BLOCK_EXPORT extern "C"
# else
# define BLOCK_EXPORT extern
# endif
#endif
#include <TargetConditionals.h>
#include <sys/cdefs.h>
#if __cplusplus
extern "C" {
#endif
// Create a heap based copy of a Block or simply add a reference to an existing one.
// This must be paired with Block_release to recover memory, even when running
// under Objective-C Garbage Collection.
BLOCK_EXPORT void *__single _Block_copy(const void *__single aBlock);
// Lose the reference, and if heap based and last reference, recover the memory
BLOCK_EXPORT void _Block_release(const void *__single aBlock);
// Used by the compiler. Do not call this function yourself.
BLOCK_EXPORT void _Block_object_assign(void *, const void *, const int);
// Used by the compiler. Do not call this function yourself.
BLOCK_EXPORT void _Block_object_dispose(const void *, const int);
// Used by the compiler. Do not use these variables yourself.
BLOCK_EXPORT void * _NSConcreteGlobalBlock[32];
BLOCK_EXPORT void * _NSConcreteStackBlock[32];
#if __cplusplus
}
#endif
// Type correct macros
#define Block_copy(...) ((__typeof(__VA_ARGS__))_Block_copy(__unsafe_forge_single(const void *, (const void *)(__VA_ARGS__))))
#define Block_release(...) _Block_release(__unsafe_forge_single(const void *, (const void *)(__VA_ARGS__)))
#endif
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