1 | /* |
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2 | * Block.h |
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3 | * |
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4 | * Copyright (c) 2008-2010 Apple Inc. All rights reserved. |
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5 | * |
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6 | * @APPLE_LLVM_LICENSE_HEADER@ |
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7 | * |
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8 | */ |
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9 | |
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10 | #ifndef _Block_H_ |
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11 | #define _Block_H_ |
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12 | |
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13 | #if !defined(BLOCK_EXPORT) |
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14 | # if defined(__cplusplus) |
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15 | # define BLOCK_EXPORT extern "C" |
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16 | # else |
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17 | # define BLOCK_EXPORT extern |
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18 | # endif |
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19 | #endif |
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20 | |
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21 | #include <Availability.h> |
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22 | #include <TargetConditionals.h> |
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23 | |
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24 | #if __cplusplus |
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25 | extern "C" { |
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26 | #endif |
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27 | |
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28 | // Create a heap based copy of a Block or simply add a reference to an existing one. |
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29 | // This must be paired with Block_release to recover memory, even when running |
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30 | // under Objective-C Garbage Collection. |
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31 | BLOCK_EXPORT void *_Block_copy(const void *aBlock) |
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32 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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33 | |
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34 | // Lose the reference, and if heap based and last reference, recover the memory |
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35 | BLOCK_EXPORT void _Block_release(const void *aBlock) |
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36 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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37 | |
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38 | |
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39 | // Used by the compiler. Do not call this function yourself. |
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40 | BLOCK_EXPORT void _Block_object_assign(void *, const void *, const int) |
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41 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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42 | |
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43 | // Used by the compiler. Do not call this function yourself. |
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44 | BLOCK_EXPORT void _Block_object_dispose(const void *, const int) |
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45 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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46 | |
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47 | // Used by the compiler. Do not use these variables yourself. |
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48 | BLOCK_EXPORT void * _NSConcreteGlobalBlock[32] |
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49 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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50 | BLOCK_EXPORT void * _NSConcreteStackBlock[32] |
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51 | __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); |
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52 | |
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53 | |
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54 | #if __cplusplus |
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55 | } |
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56 | #endif |
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57 | |
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58 | // Type correct macros |
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59 | |
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60 | #define Block_copy(...) ((__typeof(__VA_ARGS__))_Block_copy((const void *)(__VA_ARGS__))) |
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61 | #define Block_release(...) _Block_release((const void *)(__VA_ARGS__)) |
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62 | |
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63 | |
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64 | #endif |
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