Daniel Dunbar | 8cbe163 | 2009-06-26 16:21:04 +0000 | [diff] [blame] | 1 | /* |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame^] | 2 | * Block.h |
Daniel Dunbar | 8cbe163 | 2009-06-26 16:21:04 +0000 | [diff] [blame] | 3 | * |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame^] | 4 | * Copyright 2008-2009 Apple, Inc. Permission is hereby granted, free of charge, |
| 5 | * to any person obtaining a copy of this software and associated documentation |
| 6 | * files (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, publish, |
| 8 | * distribute, sublicense, and/or sell copies of the Software, and to permit |
| 9 | * persons to whom the Software is furnished to do so, subject to the following |
| 10 | * conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 21 | * SOFTWARE. |
Daniel Dunbar | 8cbe163 | 2009-06-26 16:21:04 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
| 25 | #ifndef _Block_H_ |
| 26 | #define _Block_H_ |
| 27 | |
| 28 | #if !defined(BLOCK_EXPORT) |
| 29 | # if defined(__cplusplus) |
| 30 | # define BLOCK_EXPORT extern "C" |
| 31 | # else |
| 32 | # define BLOCK_EXPORT extern |
| 33 | # endif |
| 34 | #endif |
| 35 | |
| 36 | #include <AvailabilityMacros.h> |
| 37 | #include <TargetConditionals.h> |
| 38 | |
| 39 | #if __cplusplus |
| 40 | extern "C" { |
| 41 | #endif |
| 42 | |
| 43 | // Create a heap based copy of a Block or simply add a reference to an existing one. |
| 44 | // This must be paired with Block_release to recover memory, even when running |
| 45 | // under Objective-C Garbage Collection. |
| 46 | BLOCK_EXPORT void *_Block_copy(const void *aBlock); |
| 47 | |
| 48 | // Lose the reference, and if heap based and last reference, recover the memory |
| 49 | BLOCK_EXPORT void _Block_release(const void *aBlock); |
| 50 | |
| 51 | #if __cplusplus |
| 52 | } |
| 53 | #endif |
| 54 | |
| 55 | // Type correct macros |
| 56 | |
| 57 | #define Block_copy(...) ((__typeof(__VA_ARGS__))_Block_copy((const void *)(__VA_ARGS__))) |
| 58 | #define Block_release(...) _Block_release((const void *)(__VA_ARGS__)) |
| 59 | |
| 60 | |
| 61 | #endif |