Block.h revision 276789
1252190Srpaulo/* 2252190Srpaulo * Block.h 3252190Srpaulo * 4252190Srpaulo * Copyright 2008-2010 Apple, Inc. Permission is hereby granted, free of charge, 5252190Srpaulo * to any person obtaining a copy of this software and associated documentation 6252190Srpaulo * files (the "Software"), to deal in the Software without restriction, 7252190Srpaulo * including without limitation the rights to use, copy, modify, merge, publish, 8252190Srpaulo * distribute, sublicense, and/or sell copies of the Software, and to permit 9252190Srpaulo * persons to whom the Software is furnished to do so, subject to the following 10252190Srpaulo * conditions: 11252190Srpaulo * 12252190Srpaulo * The above copyright notice and this permission notice shall be included in 13289549Srpaulo * all copies or substantial portions of the Software. 14252190Srpaulo * 15252190Srpaulo * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16252190Srpaulo * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17252190Srpaulo * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18252190Srpaulo * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19252190Srpaulo * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20281806Srpaulo * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21281806Srpaulo * SOFTWARE. 22252190Srpaulo * 23252190Srpaulo */ 24252190Srpaulo 25252190Srpaulo#ifndef _BLOCK_H_ 26252190Srpaulo#define _BLOCK_H_ 27252190Srpaulo 28252190Srpaulo#if !defined(BLOCK_EXPORT) 29289549Srpaulo# if defined(__cplusplus) 30252190Srpaulo# define BLOCK_EXPORT extern "C" 31252190Srpaulo# else 32252190Srpaulo# define BLOCK_EXPORT extern 33252190Srpaulo# endif 34252190Srpaulo#endif 35252190Srpaulo 36252190Srpaulo#if defined(__cplusplus) 37252190Srpauloextern "C" { 38252190Srpaulo#endif 39252190Srpaulo 40252190Srpaulo/* Create a heap based copy of a Block or simply add a reference to an existing one. 41252190Srpaulo * This must be paired with Block_release to recover memory, even when running 42252190Srpaulo * under Objective-C Garbage Collection. 43252190Srpaulo */ 44252190SrpauloBLOCK_EXPORT void *_Block_copy(const void *aBlock); 45252190Srpaulo 46252190Srpaulo/* Lose the reference, and if heap based and last reference, recover the memory. */ 47252190SrpauloBLOCK_EXPORT void _Block_release(const void *aBlock); 48281806Srpaulo 49252190Srpaulo#if defined(__cplusplus) 50252190Srpaulo} 51252190Srpaulo#endif 52252190Srpaulo 53252190Srpaulo/* Type correct macros. */ 54252190Srpaulo 55252190Srpaulo#define Block_copy(...) ((__typeof(__VA_ARGS__))_Block_copy((const void *)(__VA_ARGS__))) 56252190Srpaulo#define Block_release(...) _Block_release((const void *)(__VA_ARGS__)) 57252190Srpaulo 58252190Srpaulo 59252190Srpaulo#endif 60252190Srpaulo