// This source file is part of the Swift.org open source project // // Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors // Licensed under Apache License v2.0 with Runtime Library Exception // // See http://swift.org/LICENSE.txt for license information // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors // #ifndef _Block_H_ #define _Block_H_ #if !defined(BLOCK_EXPORT) # if defined(__cplusplus) # define BLOCK_EXPORT extern "C" __attribute__((visibility("default"))) # else # define BLOCK_EXPORT extern __attribute__((visibility("default"))) # endif #endif #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 *_Block_copy(const void *aBlock); // Lose the reference, and if heap based and last reference, recover the memory BLOCK_EXPORT void _Block_release(const void *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((const void *)(__VA_ARGS__))) #define Block_release(...) _Block_release((const void *)(__VA_ARGS__)) #endif