1 | /* |
2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* IOArray.h created by rsulack on Thu 11-Sep-1997 */ |
29 | |
30 | #include <libkern/OSDebug.h> |
31 | |
32 | #include <libkern/c++/OSCollection.h> |
33 | #include <libkern/c++/OSDictionary.h> |
34 | |
35 | #include <IOKit/IOKitDebug.h> |
36 | |
37 | #define super OSObject |
38 | |
39 | OSDefineMetaClassAndAbstractStructors(OSCollection, OSObject) |
40 | |
41 | |
42 | OSMetaClassDefineReservedUsed(OSCollection, 0); |
43 | OSMetaClassDefineReservedUsed(OSCollection, 1); |
44 | OSMetaClassDefineReservedUnused(OSCollection, 2); |
45 | OSMetaClassDefineReservedUnused(OSCollection, 3); |
46 | OSMetaClassDefineReservedUnused(OSCollection, 4); |
47 | OSMetaClassDefineReservedUnused(OSCollection, 5); |
48 | OSMetaClassDefineReservedUnused(OSCollection, 6); |
49 | OSMetaClassDefineReservedUnused(OSCollection, 7); |
50 | |
51 | bool OSCollection::init() |
52 | { |
53 | if (!super::init()) |
54 | return false; |
55 | |
56 | updateStamp = 0; |
57 | |
58 | return true; |
59 | } |
60 | |
61 | void OSCollection::haveUpdated() |
62 | { |
63 | if (fOptions & kImmutable) |
64 | { |
65 | if (!(gIOKitDebug & kOSRegistryModsMode)) |
66 | { |
67 | panic("Trying to change a collection in the registry" ); |
68 | } |
69 | else |
70 | { |
71 | OSReportWithBacktrace("Trying to change a collection in the registry" ); |
72 | } |
73 | } |
74 | updateStamp++; |
75 | } |
76 | |
77 | unsigned OSCollection::setOptions(unsigned options, unsigned mask, void *) |
78 | { |
79 | unsigned old = fOptions; |
80 | |
81 | if (mask) |
82 | fOptions = (old & ~mask) | (options & mask); |
83 | |
84 | return old; |
85 | } |
86 | |
87 | OSCollection * OSCollection::copyCollection(OSDictionary *cycleDict) |
88 | { |
89 | if (cycleDict) { |
90 | OSObject *obj = cycleDict->getObject((const OSSymbol *) this); |
91 | if (obj) |
92 | obj->retain(); |
93 | |
94 | return reinterpret_cast<OSCollection *>(obj); |
95 | } |
96 | else { |
97 | // If we are here it means that there is a collection subclass that |
98 | // hasn't overridden the copyCollection method. In which case just |
99 | // return a reference to ourselves. |
100 | // Hopefully this collection will not be inserted into the registry |
101 | retain(); |
102 | return this; |
103 | } |
104 | } |
105 | |
106 | bool OSCollection::iterateObjects(void * refcon, bool (*callback)(void * refcon, OSObject * object)) |
107 | { |
108 | uint64_t iteratorStore[2]; |
109 | unsigned int initialUpdateStamp; |
110 | bool done; |
111 | |
112 | assert(iteratorSize() < sizeof(iteratorStore)); |
113 | |
114 | if (!initIterator(&iteratorStore[0])) return (false); |
115 | |
116 | initialUpdateStamp = updateStamp; |
117 | done = false; |
118 | do |
119 | { |
120 | OSObject * object; |
121 | if (!getNextObjectForIterator(&iteratorStore[0], &object)) break; |
122 | done = callback(refcon, object); |
123 | } |
124 | while (!done && (initialUpdateStamp == updateStamp)); |
125 | |
126 | return initialUpdateStamp == updateStamp; |
127 | } |
128 | |
129 | static bool OSCollectionIterateObjectsBlock(void * refcon, OSObject * object) |
130 | { |
131 | bool (^block)(OSObject * object) = (typeof(block)) refcon; |
132 | return (block(object)); |
133 | } |
134 | |
135 | bool OSCollection::iterateObjects(bool (^block)(OSObject * object)) |
136 | { |
137 | return (iterateObjects((void *) block, OSCollectionIterateObjectsBlock)); |
138 | } |
139 | |