1 /* 2 * Copyright (c) 2011-2012 Apple Inc. All rights reserved. 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 /* 22 * IMPORTANT: This header file describes INTERNAL interfaces to libdispatch 23 * which are subject to change in future releases of Mac OS X. Any applications 24 * relying on these interfaces WILL break. 25 */ 26 27 #ifndef __OS_OBJECT_PRIVATE__ 28 #define __OS_OBJECT_PRIVATE__ 29 30 #include <sys/cdefs.h> 31 #include <stddef.h> 32 #include <os/object.h> 33 34 #ifndef __OSX_AVAILABLE_STARTING 35 #define __OSX_AVAILABLE_STARTING(x, y) 36 #endif 37 38 #if __GNUC__ 39 #define OS_OBJECT_NOTHROW __attribute__((__nothrow__)) 40 #define OS_OBJECT_NONNULL __attribute__((__nonnull__)) 41 #define OS_OBJECT_WARN_RESULT __attribute__((__warn_unused_result__)) 42 #define OS_OBJECT_MALLOC __attribute__((__malloc__)) 43 #define OS_OBJECT_EXPORT extern __attribute__((visibility("default"))) 44 #else 45 /*! @parseOnly */ 46 #define OS_OBJECT_NOTHROW 47 /*! @parseOnly */ 48 #define OS_OBJECT_NONNULL 49 /*! @parseOnly */ 50 #define OS_OBJECT_WARN_RESULT 51 /*! @parseOnly */ 52 #define OS_OBJECT_MALLOC 53 #define OS_OBJECT_EXPORT extern 54 #endif 55 56 #if OS_OBJECT_USE_OBJC && defined(__has_feature) 57 #if __has_feature(objc_arc) 58 #define _OS_OBJECT_OBJC_ARC 1 59 #else 60 #define _OS_OBJECT_OBJC_ARC 0 61 #endif 62 #else 63 #define _OS_OBJECT_OBJC_ARC 0 64 #endif 65 66 #define _OS_OBJECT_GLOBAL_REFCNT INT_MAX 67 68 #define _OS_OBJECT_HEADER(isa, ref_cnt, xref_cnt) \ 69 isa; /* must be pointer-sized */ \ 70 int volatile ref_cnt; \ 71 int volatile xref_cnt 72 73 #if OS_OBJECT_HAVE_OBJC_SUPPORT 74 // Must match size of compiler-generated OBJC_CLASS structure rdar://10640168 75 #define _OS_OBJECT_CLASS_HEADER() \ 76 void *_os_obj_objc_class_t[5] 77 #else 78 #define _OS_OBJECT_CLASS_HEADER() \ 79 void (*_os_obj_xref_dispose)(_os_object_t); \ 80 void (*_os_obj_dispose)(_os_object_t) 81 #endif 82 83 #define OS_OBJECT_CLASS(name) OS_##name 84 85 #if OS_OBJECT_USE_OBJC 86 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 87 OS_OBJECT_EXPORT 88 @interface OS_OBJECT_CLASS(object) : NSObject 89 - (void)_xref_dispose; 90 - (void)_dispose; 91 @end 92 typedef OS_OBJECT_CLASS(object) *_os_object_t; 93 #define _OS_OBJECT_DECL_SUBCLASS_INTERFACE(name, super) \ 94 @interface OS_OBJECT_CLASS(name) : OS_OBJECT_CLASS(super) \ 95 <OS_OBJECT_CLASS(name)> \ 96 @end 97 #else 98 typedef struct _os_object_s *_os_object_t; 99 #endif 100 101 __BEGIN_DECLS 102 103 #if !_OS_OBJECT_OBJC_ARC 104 105 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 106 OS_OBJECT_EXPORT OS_OBJECT_MALLOC OS_OBJECT_WARN_RESULT OS_OBJECT_NOTHROW 107 _os_object_t 108 _os_object_alloc(const void *cls, size_t size); 109 110 __OSX_AVAILABLE_STARTING(__MAC_10_9,__IPHONE_7_0) 111 OS_OBJECT_EXPORT OS_OBJECT_MALLOC OS_OBJECT_WARN_RESULT OS_OBJECT_NOTHROW 112 _os_object_t 113 _os_object_alloc_realized(const void *cls, size_t size); 114 115 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 116 OS_OBJECT_EXPORT OS_OBJECT_NONNULL OS_OBJECT_NOTHROW 117 void _os_object_dealloc(_os_object_t object); 118 119 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 120 OS_OBJECT_EXPORT OS_OBJECT_NONNULL OS_OBJECT_NOTHROW 121 _os_object_t 122 _os_object_retain(_os_object_t object); 123 124 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 125 OS_OBJECT_EXPORT OS_OBJECT_NONNULL OS_OBJECT_NOTHROW 126 void 127 _os_object_release(_os_object_t object); 128 129 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 130 OS_OBJECT_EXPORT OS_OBJECT_NONNULL OS_OBJECT_NOTHROW 131 _os_object_t 132 _os_object_retain_internal(_os_object_t object); 133 134 __OSX_AVAILABLE_STARTING(__MAC_10_8,__IPHONE_6_0) 135 OS_OBJECT_EXPORT OS_OBJECT_NONNULL OS_OBJECT_NOTHROW 136 void 137 _os_object_release_internal(_os_object_t object); 138 139 #endif // !_OS_OBJECT_OBJC_ARC 140 141 __END_DECLS 142 143 #endif 144