[apple/libdispatch.git] / os / object.h

/*
 * Copyright (c) 2011-2014 Apple Inc. All rights reserved.
 *
 * @APPLE_APACHE_LICENSE_HEADER_START@
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @APPLE_APACHE_LICENSE_HEADER_END@
 */

#ifndef __OS_OBJECT__
#define __OS_OBJECT__

#ifdef __APPLE__
#include <Availability.h>
#include <TargetConditionals.h>
#endif
#ifndef __linux__
#include <os/base.h>
#else
#include <os/linux_base.h>
#endif

/*!
 * @header
 *
 * @preprocinfo
 * By default, libSystem objects such as GCD and XPC objects are declared as
 * Objective-C types when building with an Objective-C compiler. This allows
 * them to participate in ARC, in RR management by the Blocks runtime and in
 * leaks checking by the static analyzer, and enables them to be added to Cocoa
 * collections.
 *
 * NOTE: this requires explicit cancellation of dispatch sources and xpc
 *       connections whose handler blocks capture the source/connection object,
 *       resp. ensuring that such captures do not form retain cycles (e.g. by
 *       declaring the source as __weak).
 *
 * To opt-out of this default behavior, add -DOS_OBJECT_USE_OBJC=0 to your
 * compiler flags.
 *
 * This mode requires a platform with the modern Objective-C runtime, the
 * Objective-C GC compiler option to be disabled, and at least a Mac OS X 10.8
 * or iOS 6.0 deployment target.
 */

#ifndef OS_OBJECT_HAVE_OBJC_SUPPORT
#if !defined(__OBJC__) || defined(__OBJC_GC__)
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 0
#elif !defined(TARGET_OS_MAC) || !TARGET_OS_MAC
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 0
#elif TARGET_OS_IOS && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 0
#elif TARGET_OS_MAC && !TARGET_OS_IPHONE
#  if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_8
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 0
#  elif defined(__i386__) && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 0
#  else
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 1
#  endif
#else
#  define OS_OBJECT_HAVE_OBJC_SUPPORT 1
#endif
#endif // OS_OBJECT_HAVE_OBJC_SUPPORT

#if OS_OBJECT_HAVE_OBJC_SUPPORT
#ifndef OS_OBJECT_USE_OBJC
#define OS_OBJECT_USE_OBJC 1
#endif
#elif defined(OS_OBJECT_USE_OBJC) && OS_OBJECT_USE_OBJC
/* Unsupported platform for OS_OBJECT_USE_OBJC=1 */
#undef OS_OBJECT_USE_OBJC
#define OS_OBJECT_USE_OBJC 0
#else
#define OS_OBJECT_USE_OBJC 0
#endif

#ifndef OS_OBJECT_SWIFT3
#if defined(SWIFT_SDK_OVERLAY_DISPATCH_EPOCH) && \
		SWIFT_SDK_OVERLAY_DISPATCH_EPOCH >= 2
#define OS_OBJECT_SWIFT3 1
#else
#define OS_OBJECT_SWIFT3 0
#endif // SWIFT_SDK_OVERLAY_DISPATCH_EPOCH >= 2
#endif // OS_OBJECT_SWIFT3

#if OS_OBJECT_USE_OBJC
#import <objc/NSObject.h>
#if __has_attribute(objc_independent_class)
#define OS_OBJC_INDEPENDENT_CLASS __attribute__((objc_independent_class))
#endif // __has_attribute(objc_independent_class)
#ifndef OS_OBJC_INDEPENDENT_CLASS
#define OS_OBJC_INDEPENDENT_CLASS
#endif
#define OS_OBJECT_CLASS(name) OS_##name
#define OS_OBJECT_DECL_PROTOCOL(name, ...) \
		@protocol OS_OBJECT_CLASS(name) __VA_ARGS__ \
		@end
#define OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL_IMPL(name, proto) \
		@interface name () <proto> \
		@end
#define OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL(name, proto) \
		OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL_IMPL( \
				OS_OBJECT_CLASS(name), OS_OBJECT_CLASS(proto))
#define OS_OBJECT_DECL_IMPL(name, ...) \
		OS_OBJECT_DECL_PROTOCOL(name, __VA_ARGS__) \
		typedef NSObject<OS_OBJECT_CLASS(name)> \
				* OS_OBJC_INDEPENDENT_CLASS name##_t
#define OS_OBJECT_DECL_BASE(name, ...) \
		@interface OS_OBJECT_CLASS(name) : __VA_ARGS__ \
		- (instancetype)init OS_SWIFT_UNAVAILABLE("Unavailable in Swift"); \
		@end
#define OS_OBJECT_DECL_IMPL_CLASS(name, ...) \
		OS_OBJECT_DECL_BASE(name, ## __VA_ARGS__) \
		typedef OS_OBJECT_CLASS(name) \
				* OS_OBJC_INDEPENDENT_CLASS name##_t
#define OS_OBJECT_DECL(name, ...) \
		OS_OBJECT_DECL_IMPL(name, <NSObject>)
#define OS_OBJECT_DECL_SUBCLASS(name, super) \
		OS_OBJECT_DECL_IMPL(name, <OS_OBJECT_CLASS(super)>)
#if __has_attribute(ns_returns_retained)
#define OS_OBJECT_RETURNS_RETAINED __attribute__((__ns_returns_retained__))
#else
#define OS_OBJECT_RETURNS_RETAINED
#endif
#if __has_attribute(ns_consumed)
#define OS_OBJECT_CONSUMED __attribute__((__ns_consumed__))
#else
#define OS_OBJECT_CONSUMED
#endif
#if __has_feature(objc_arc)
#define OS_OBJECT_BRIDGE __bridge
#define OS_WARN_RESULT_NEEDS_RELEASE
#else
#define OS_OBJECT_BRIDGE
#define OS_WARN_RESULT_NEEDS_RELEASE OS_WARN_RESULT
#endif
#if __has_attribute(objc_runtime_visible) && \
		((defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \
		__MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12) || \
		(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && \
		!defined(__TV_OS_VERSION_MIN_REQUIRED) && \
		!defined(__WATCH_OS_VERSION_MIN_REQUIRED) && \
		__IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_10_0) || \
		(defined(__TV_OS_VERSION_MIN_REQUIRED) && \
		__TV_OS_VERSION_MIN_REQUIRED < __TVOS_10_0) || \
		(defined(__WATCH_OS_VERSION_MIN_REQUIRED) && \
		__WATCH_OS_VERSION_MIN_REQUIRED < __WATCHOS_3_0))
/*
 * To provide backward deployment of ObjC objects in Swift on pre-10.12
 * SDKs, OS_object classes can be marked as OS_OBJECT_OBJC_RUNTIME_VISIBLE.
 * When compiling with a deployment target earlier than OS X 10.12 (iOS 10.0, 
 * tvOS 10.0, watchOS 3.0) the Swift compiler will only refer to this type at
 * runtime (using the ObjC runtime).
 */
#define OS_OBJECT_OBJC_RUNTIME_VISIBLE __attribute__((objc_runtime_visible))
#else
#define OS_OBJECT_OBJC_RUNTIME_VISIBLE
#endif
#ifndef OS_OBJECT_USE_OBJC_RETAIN_RELEASE
#if defined(__clang_analyzer__)
#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 1
#elif __has_feature(objc_arc) && !OS_OBJECT_SWIFT3
#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 1
#else
#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 0
#endif
#endif
#if OS_OBJECT_SWIFT3
#define OS_OBJECT_DECL_SWIFT(name) \
		OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE \
		OS_OBJECT_DECL_IMPL_CLASS(name, NSObject)
#define OS_OBJECT_DECL_SUBCLASS_SWIFT(name, super) \
		OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE \
		OS_OBJECT_DECL_IMPL_CLASS(name, OS_OBJECT_CLASS(super))
OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE
OS_OBJECT_DECL_BASE(object, NSObject);
#endif // OS_OBJECT_SWIFT3
#else
/*! @parseOnly */
#define OS_OBJECT_RETURNS_RETAINED
/*! @parseOnly */
#define OS_OBJECT_CONSUMED
/*! @parseOnly */
#define OS_OBJECT_BRIDGE
/*! @parseOnly */
#define OS_WARN_RESULT_NEEDS_RELEASE OS_WARN_RESULT
/*! @parseOnly */
#define OS_OBJECT_OBJC_RUNTIME_VISIBLE
#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 0
#endif

#if OS_OBJECT_SWIFT3
#define OS_OBJECT_DECL_CLASS(name) \
		OS_OBJECT_DECL_SUBCLASS_SWIFT(name, object)
#elif OS_OBJECT_USE_OBJC
#define OS_OBJECT_DECL_CLASS(name) \
		OS_OBJECT_DECL(name)
#else
#define OS_OBJECT_DECL_CLASS(name) \
		typedef struct name##_s *name##_t
#endif

#define OS_OBJECT_GLOBAL_OBJECT(type, object) ((OS_OBJECT_BRIDGE type)&(object))

__BEGIN_DECLS

/*!
 * @function os_retain
 *
 * @abstract
 * Increment the reference count of an os_object.
 *
 * @discussion
 * On a platform with the modern Objective-C runtime this is exactly equivalent
 * to sending the object the -[retain] message.
 *
 * @param object
 * The object to retain.
 *
 * @result
 * The retained object.
 */
__OSX_AVAILABLE_STARTING(__MAC_10_10,__IPHONE_8_0)
OS_EXPORT OS_SWIFT_UNAVAILABLE("Can't be used with ARC")
void*
os_retain(void *object);
#if OS_OBJECT_USE_OBJC
#undef os_retain
#define os_retain(object) [object retain]
#endif

/*!
 * @function os_release
 *
 * @abstract
 * Decrement the reference count of a os_object.
 *
 * @discussion
 * On a platform with the modern Objective-C runtime this is exactly equivalent
 * to sending the object the -[release] message.
 *
 * @param object
 * The object to release.
 */
__OSX_AVAILABLE_STARTING(__MAC_10_10,__IPHONE_8_0)
OS_EXPORT
void OS_SWIFT_UNAVAILABLE("Can't be used with ARC")
os_release(void *object);
#if OS_OBJECT_USE_OBJC
#undef os_release
#define os_release(object) [object release]
#endif

__END_DECLS

#endif
Commit	Line	Data
c093abd6	1	/*
98cf8cd2	2	* Copyright (c) 2011-2014 Apple Inc. All rights reserved.
c093abd6 A	3	*
	4	* @APPLE_APACHE_LICENSE_HEADER_START@
	5	*
	6	* Licensed under the Apache License, Version 2.0 (the "License");
	7	* you may not use this file except in compliance with the License.
	8	* You may obtain a copy of the License at
	9	*
	10	* http://www.apache.org/licenses/LICENSE-2.0
	11	*
	12	* Unless required by applicable law or agreed to in writing, software
	13	* distributed under the License is distributed on an "AS IS" BASIS,
	14	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	15	* See the License for the specific language governing permissions and
	16	* limitations under the License.
	17	*
	18	* @APPLE_APACHE_LICENSE_HEADER_END@
	19	*/
	20
	21	#ifndef __OS_OBJECT__
	22	#define __OS_OBJECT__
	23
	24	#ifdef __APPLE__
	25	#include <Availability.h>
beb15981	26	#include <TargetConditionals.h>
c093abd6	27	#endif
beb15981	28	#ifndef __linux__
98cf8cd2	29	#include <os/base.h>
beb15981 A	30	#else
	31	#include <os/linux_base.h>
	32	#endif
c093abd6 A	33
	34	/*!
	35	* @header
	36	*
	37	* @preprocinfo
	38	* By default, libSystem objects such as GCD and XPC objects are declared as
	39	* Objective-C types when building with an Objective-C compiler. This allows
	40	* them to participate in ARC, in RR management by the Blocks runtime and in
	41	* leaks checking by the static analyzer, and enables them to be added to Cocoa
	42	* collections.
	43	*
	44	* NOTE: this requires explicit cancellation of dispatch sources and xpc
	45	* connections whose handler blocks capture the source/connection object,
	46	* resp. ensuring that such captures do not form retain cycles (e.g. by
	47	* declaring the source as __weak).
	48	*
	49	* To opt-out of this default behavior, add -DOS_OBJECT_USE_OBJC=0 to your
	50	* compiler flags.
	51	*
	52	* This mode requires a platform with the modern Objective-C runtime, the
	53	* Objective-C GC compiler option to be disabled, and at least a Mac OS X 10.8
517da941	54	* or iOS 6.0 deployment target.
c093abd6 A	55	*/
	56
	57	#ifndef OS_OBJECT_HAVE_OBJC_SUPPORT
beb15981 A	58	#if !defined(__OBJC__) \|\| defined(__OBJC_GC__)
	59	# define OS_OBJECT_HAVE_OBJC_SUPPORT 0
	60	#elif !defined(TARGET_OS_MAC) \|\| !TARGET_OS_MAC
	61	# define OS_OBJECT_HAVE_OBJC_SUPPORT 0
	62	#elif TARGET_OS_IOS && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0
	63	# define OS_OBJECT_HAVE_OBJC_SUPPORT 0
	64	#elif TARGET_OS_MAC && !TARGET_OS_IPHONE
	65	# if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_8
	66	# define OS_OBJECT_HAVE_OBJC_SUPPORT 0
	67	# elif defined(__i386__) && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12
	68	# define OS_OBJECT_HAVE_OBJC_SUPPORT 0
	69	# else
	70	# define OS_OBJECT_HAVE_OBJC_SUPPORT 1
	71	# endif
c093abd6	72	#else
beb15981	73	# define OS_OBJECT_HAVE_OBJC_SUPPORT 1
c093abd6	74	#endif
beb15981	75	#endif // OS_OBJECT_HAVE_OBJC_SUPPORT
c093abd6 A	76
	77	#if OS_OBJECT_HAVE_OBJC_SUPPORT
	78	#ifndef OS_OBJECT_USE_OBJC
	79	#define OS_OBJECT_USE_OBJC 1
	80	#endif
	81	#elif defined(OS_OBJECT_USE_OBJC) && OS_OBJECT_USE_OBJC
	82	/* Unsupported platform for OS_OBJECT_USE_OBJC=1 */
	83	#undef OS_OBJECT_USE_OBJC
	84	#define OS_OBJECT_USE_OBJC 0
	85	#else
	86	#define OS_OBJECT_USE_OBJC 0
	87	#endif
	88
beb15981 A	89	#ifndef OS_OBJECT_SWIFT3
	90	#if defined(SWIFT_SDK_OVERLAY_DISPATCH_EPOCH) && \
	91	SWIFT_SDK_OVERLAY_DISPATCH_EPOCH >= 2
	92	#define OS_OBJECT_SWIFT3 1
	93	#else
	94	#define OS_OBJECT_SWIFT3 0
	95	#endif // SWIFT_SDK_OVERLAY_DISPATCH_EPOCH >= 2
	96	#endif // OS_OBJECT_SWIFT3
	97
c093abd6	98	#if OS_OBJECT_USE_OBJC
517da941	99	#import <objc/NSObject.h>
beb15981 A	100	#if __has_attribute(objc_independent_class)
	101	#define OS_OBJC_INDEPENDENT_CLASS __attribute__((objc_independent_class))
	102	#endif // __has_attribute(objc_independent_class)
	103	#ifndef OS_OBJC_INDEPENDENT_CLASS
	104	#define OS_OBJC_INDEPENDENT_CLASS
	105	#endif
c093abd6	106	#define OS_OBJECT_CLASS(name) OS_##name
beb15981	107	#define OS_OBJECT_DECL_PROTOCOL(name, ...) \
c093abd6	108	@protocol OS_OBJECT_CLASS(name) __VA_ARGS__ \
beb15981 A	109	@end
	110	#define OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL_IMPL(name, proto) \
	111	@interface name () <proto> \
	112	@end
	113	#define OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL(name, proto) \
	114	OS_OBJECT_CLASS_IMPLEMENTS_PROTOCOL_IMPL( \
	115	OS_OBJECT_CLASS(name), OS_OBJECT_CLASS(proto))
	116	#define OS_OBJECT_DECL_IMPL(name, ...) \
	117	OS_OBJECT_DECL_PROTOCOL(name, __VA_ARGS__) \
	118	typedef NSObject<OS_OBJECT_CLASS(name)> \
	119	* OS_OBJC_INDEPENDENT_CLASS name##_t
	120	#define OS_OBJECT_DECL_BASE(name, ...) \
	121	@interface OS_OBJECT_CLASS(name) : __VA_ARGS__ \
	122	- (instancetype)init OS_SWIFT_UNAVAILABLE("Unavailable in Swift"); \
	123	@end
	124	#define OS_OBJECT_DECL_IMPL_CLASS(name, ...) \
	125	OS_OBJECT_DECL_BASE(name, ## __VA_ARGS__) \
	126	typedef OS_OBJECT_CLASS(name) \
	127	* OS_OBJC_INDEPENDENT_CLASS name##_t
45201a42	128	#define OS_OBJECT_DECL(name, ...) \
beb15981	129	OS_OBJECT_DECL_IMPL(name, <NSObject>)
c093abd6	130	#define OS_OBJECT_DECL_SUBCLASS(name, super) \
45201a42	131	OS_OBJECT_DECL_IMPL(name, <OS_OBJECT_CLASS(super)>)
517da941	132	#if __has_attribute(ns_returns_retained)
c093abd6 A	133	#define OS_OBJECT_RETURNS_RETAINED __attribute__((__ns_returns_retained__))
	134	#else
	135	#define OS_OBJECT_RETURNS_RETAINED
	136	#endif
98cf8cd2 A	137	#if __has_attribute(ns_consumed)
	138	#define OS_OBJECT_CONSUMED __attribute__((__ns_consumed__))
	139	#else
	140	#define OS_OBJECT_CONSUMED
	141	#endif
517da941	142	#if __has_feature(objc_arc)
c093abd6	143	#define OS_OBJECT_BRIDGE __bridge
98cf8cd2	144	#define OS_WARN_RESULT_NEEDS_RELEASE
c093abd6 A	145	#else
c093abd6 A	146	#define OS_OBJECT_BRIDGE
98cf8cd2	147	#define OS_WARN_RESULT_NEEDS_RELEASE OS_WARN_RESULT
c093abd6	148	#endif
beb15981 A	149	#if __has_attribute(objc_runtime_visible) && \
	150	((defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \
	151	__MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12) \|\| \
	152	(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && \
	153	!defined(__TV_OS_VERSION_MIN_REQUIRED) && \
	154	!defined(__WATCH_OS_VERSION_MIN_REQUIRED) && \
	155	__IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_10_0) \|\| \
	156	(defined(__TV_OS_VERSION_MIN_REQUIRED) && \
	157	__TV_OS_VERSION_MIN_REQUIRED < __TVOS_10_0) \|\| \
	158	(defined(__WATCH_OS_VERSION_MIN_REQUIRED) && \
	159	__WATCH_OS_VERSION_MIN_REQUIRED < __WATCHOS_3_0))
	160	/*
	161	* To provide backward deployment of ObjC objects in Swift on pre-10.12
	162	* SDKs, OS_object classes can be marked as OS_OBJECT_OBJC_RUNTIME_VISIBLE.
	163	* When compiling with a deployment target earlier than OS X 10.12 (iOS 10.0,
	164	* tvOS 10.0, watchOS 3.0) the Swift compiler will only refer to this type at
	165	* runtime (using the ObjC runtime).
	166	*/
	167	#define OS_OBJECT_OBJC_RUNTIME_VISIBLE __attribute__((objc_runtime_visible))
517da941	168	#else
beb15981	169	#define OS_OBJECT_OBJC_RUNTIME_VISIBLE
517da941	170	#endif
c093abd6	171	#ifndef OS_OBJECT_USE_OBJC_RETAIN_RELEASE
517da941 A	172	#if defined(__clang_analyzer__)
517da941 A	173	#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 1
beb15981	174	#elif __has_feature(objc_arc) && !OS_OBJECT_SWIFT3
c093abd6 A	175	#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 1
	176	#else
	177	#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 0
	178	#endif
	179	#endif
beb15981 A	180	#if OS_OBJECT_SWIFT3
	181	#define OS_OBJECT_DECL_SWIFT(name) \
	182	OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE \
	183	OS_OBJECT_DECL_IMPL_CLASS(name, NSObject)
	184	#define OS_OBJECT_DECL_SUBCLASS_SWIFT(name, super) \
	185	OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE \
	186	OS_OBJECT_DECL_IMPL_CLASS(name, OS_OBJECT_CLASS(super))
	187	OS_EXPORT OS_OBJECT_OBJC_RUNTIME_VISIBLE
	188	OS_OBJECT_DECL_BASE(object, NSObject);
	189	#endif // OS_OBJECT_SWIFT3
c093abd6 A	190	#else
	191	/! @parseOnly /
	192	#define OS_OBJECT_RETURNS_RETAINED
	193	/! @parseOnly /
98cf8cd2 A	194	#define OS_OBJECT_CONSUMED
98cf8cd2 A	195	/! @parseOnly /
c093abd6	196	#define OS_OBJECT_BRIDGE
98cf8cd2 A	197	/! @parseOnly /
98cf8cd2 A	198	#define OS_WARN_RESULT_NEEDS_RELEASE OS_WARN_RESULT
beb15981 A	199	/! @parseOnly /
beb15981 A	200	#define OS_OBJECT_OBJC_RUNTIME_VISIBLE
c093abd6 A	201	#define OS_OBJECT_USE_OBJC_RETAIN_RELEASE 0
	202	#endif
	203
beb15981 A	204	#if OS_OBJECT_SWIFT3
	205	#define OS_OBJECT_DECL_CLASS(name) \
	206	OS_OBJECT_DECL_SUBCLASS_SWIFT(name, object)
	207	#elif OS_OBJECT_USE_OBJC
	208	#define OS_OBJECT_DECL_CLASS(name) \
	209	OS_OBJECT_DECL(name)
	210	#else
	211	#define OS_OBJECT_DECL_CLASS(name) \
	212	typedef struct name##_s *name##_t
	213	#endif
	214
98cf8cd2 A	215	#define OS_OBJECT_GLOBAL_OBJECT(type, object) ((OS_OBJECT_BRIDGE type)&(object))
	216
	217	__BEGIN_DECLS
	218
	219	/*!
	220	* @function os_retain
	221	*
	222	* @abstract
	223	* Increment the reference count of an os_object.
	224	*
	225	* @discussion
	226	* On a platform with the modern Objective-C runtime this is exactly equivalent
	227	* to sending the object the -[retain] message.
	228	*
	229	* @param object
	230	* The object to retain.
	231	*
	232	* @result
	233	* The retained object.
	234	*/
	235	__OSX_AVAILABLE_STARTING(__MAC_10_10,__IPHONE_8_0)
beb15981	236	OS_EXPORT OS_SWIFT_UNAVAILABLE("Can't be used with ARC")
98cf8cd2 A	237	void*
	238	os_retain(void *object);
	239	#if OS_OBJECT_USE_OBJC
	240	#undef os_retain
	241	#define os_retain(object) [object retain]
	242	#endif
	243
	244	/*!
	245	* @function os_release
	246	*
	247	* @abstract
	248	* Decrement the reference count of a os_object.
	249	*
	250	* @discussion
	251	* On a platform with the modern Objective-C runtime this is exactly equivalent
	252	* to sending the object the -[release] message.
	253	*
	254	* @param object
	255	* The object to release.
	256	*/
	257	__OSX_AVAILABLE_STARTING(__MAC_10_10,__IPHONE_8_0)
	258	OS_EXPORT
beb15981	259	void OS_SWIFT_UNAVAILABLE("Can't be used with ARC")
98cf8cd2 A	260	os_release(void *object);
	261	#if OS_OBJECT_USE_OBJC
	262	#undef os_release
	263	#define os_release(object) [object release]
	264	#endif
	265
	266	__END_DECLS
	267
c093abd6	268	#endif