60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/*
|
|
* Block.h
|
|
*
|
|
* Copyright 2008-2010 Apple, Inc. Permission is hereby granted, free of charge,
|
|
* to any person obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
* persons to whom the Software is furnished to do so, subject to the following
|
|
* conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#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
|
|
|
|
#if defined(__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);
|
|
|
|
#if defined(__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
|