| 1 | /* |
| 2 | * Copyright (c) 2019 Apple 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 | /* IOSet.h created by rsulack on Thu 11-Jun-1998 */ |
| 29 | /* IOSet.h converted to C++ by gvdl on Fri 1998-10-30 */ |
| 30 | |
| 31 | #ifndef _OS_OSSET_H |
| 32 | #define _OS_OSSET_H |
| 33 | |
| 34 | #include <libkern/c++/OSCollection.h> |
| 35 | #include <libkern/c++/OSPtr.h> |
| 36 | |
| 37 | class OSArray; |
| 38 | class OSSet; |
| 39 | |
| 40 | typedef OSSet* OSSetPtr; |
| 41 | typedef OSArray* OSArrayPtr; |
| 42 | |
| 43 | /*! |
| 44 | * @header |
| 45 | * |
| 46 | * @abstract |
| 47 | * This header declares the OSSet collection class. |
| 48 | */ |
| 49 | |
| 50 | |
| 51 | /*! |
| 52 | * @class OSSet |
| 53 | * |
| 54 | * @abstract |
| 55 | * OSSet provides an unordered set store of objects. |
| 56 | * |
| 57 | * @discussion |
| 58 | * OSSet is a container for Libkern C++ objects |
| 59 | * (those derived from |
| 60 | * @link //apple_ref/doc/class/OSMetaClassBase OSMetaClassBase@/link, |
| 61 | * in particular @link //apple_ref/doc/class/OSObject OSObject@/link). |
| 62 | * Storage and access follow basic set logic: you can add or remove an object, |
| 63 | * and test whether the set contains a particular object. |
| 64 | * A given object is only stored in the set once, |
| 65 | * and there is no ordering of objects in the set. |
| 66 | * A subclass @link //apple_ref/doc/class/OSOrderedSet OSOrderedSet@/link, |
| 67 | * provides for ordered set logic. |
| 68 | * |
| 69 | * As with all Libkern collection classes, |
| 70 | * OSSet retains objects added to it, |
| 71 | * and releases objects removed from it. |
| 72 | * An OSSet also grows as necessary to accommodate new objects, |
| 73 | * <i>unlike</i> Core Foundation collections (it does not, however, shrink). |
| 74 | * |
| 75 | * <b>Use Restrictions</b> |
| 76 | * |
| 77 | * With very few exceptions in the I/O Kit, all Libkern-based C++ |
| 78 | * classes, functions, and macros are <b>unsafe</b> |
| 79 | * to use in a primary interrupt context. |
| 80 | * Consult the I/O Kit documentation related to primary interrupts |
| 81 | * for more information. |
| 82 | * |
| 83 | * OSSet provides no concurrency protection; |
| 84 | * it's up to the usage context to provide any protection necessary. |
| 85 | * Some portions of the I/O Kit, such as |
| 86 | * @link //apple_ref/doc/class/IORegistryEntry IORegistryEntry@/link, |
| 87 | * handle synchronization via defined member functions for setting |
| 88 | * properties. |
| 89 | */ |
| 90 | class OSSet : public OSCollection |
| 91 | { |
| 92 | friend class OSSerialize; |
| 93 | |
| 94 | OSDeclareDefaultStructors(OSSet); |
| 95 | |
| 96 | #if APPLE_KEXT_ALIGN_CONTAINERS |
| 97 | |
| 98 | private: |
| 99 | OSPtr<OSArray> members; |
| 100 | |
| 101 | #else /* APPLE_KEXT_ALIGN_CONTAINERS */ |
| 102 | |
| 103 | private: |
| 104 | OSPtr<OSArray> members; |
| 105 | |
| 106 | protected: |
| 107 | struct ExpansionData { }; |
| 108 | |
| 109 | /* Reserved for future use. (Internal use only) */ |
| 110 | ExpansionData * reserved; |
| 111 | |
| 112 | #endif /* APPLE_KEXT_ALIGN_CONTAINERS */ |
| 113 | |
| 114 | /* |
| 115 | * OSCollectionIterator interfaces. |
| 116 | */ |
| 117 | virtual unsigned int iteratorSize() const APPLE_KEXT_OVERRIDE; |
| 118 | virtual bool initIterator(void * iterator) const APPLE_KEXT_OVERRIDE; |
| 119 | virtual bool getNextObjectForIterator(void * iterator, OSObject ** ret) const APPLE_KEXT_OVERRIDE; |
| 120 | |
| 121 | public: |
| 122 | |
| 123 | |
| 124 | /*! |
| 125 | * @function withCapacity |
| 126 | * |
| 127 | * @abstract |
| 128 | * Creates and initializes an empty OSSet. |
| 129 | * |
| 130 | * @param capacity The initial storage capacity of the new set object. |
| 131 | * |
| 132 | * @result |
| 133 | * An empty instance of OSSet |
| 134 | * with a retain count of 1; |
| 135 | * <code>NULL</code> on failure. |
| 136 | * |
| 137 | * @discussion |
| 138 | * <code>capacity</code> must be nonzero. |
| 139 | * The new OSSet will grow as needed to accommodate more key/object pairs |
| 140 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 141 | * for which the initial capacity is a hard limit). |
| 142 | */ |
| 143 | static OSPtr<OSSet> withCapacity(unsigned int capacity); |
| 144 | |
| 145 | |
| 146 | /*! |
| 147 | * @function withObjects |
| 148 | * |
| 149 | * @abstract |
| 150 | * Creates and initializes an OSSet |
| 151 | * populated with objects provided. |
| 152 | * |
| 153 | * @param objects A C array of OSMetaClassBase-derived objects. |
| 154 | * @param count The number of objects to be placed into the set. |
| 155 | * @param capacity The initial storage capacity of the new set object. |
| 156 | * If 0, <code>count</code> is used; otherwise this value |
| 157 | * must be greater than or equal to <code>count</code>. |
| 158 | * |
| 159 | * @result |
| 160 | * An instance of OSSet |
| 161 | * containing the objects provided, |
| 162 | * with a retain count of 1; |
| 163 | * <code>NULL</code> on failure. |
| 164 | * |
| 165 | * @discussion |
| 166 | * <code>objects</code> must be non-<code>NULL</code>, |
| 167 | * and <code>count</code> must be nonzero. |
| 168 | * If <code>capacity</code> is nonzero, |
| 169 | * it must be greater than or equal to <code>count</code>. |
| 170 | * The new OSSet will grow as needed to accommodate more objects |
| 171 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 172 | * for which the initial capacity is a hard limit). |
| 173 | * |
| 174 | * The objects in <code>objects</code> are retained for storage in the new set, |
| 175 | * not copied. |
| 176 | */ |
| 177 | static OSPtr<OSSet> withObjects( |
| 178 | const OSObject * objects[], |
| 179 | unsigned int count, |
| 180 | unsigned int capacity = 0); |
| 181 | |
| 182 | |
| 183 | /*! |
| 184 | * @function withArray |
| 185 | * |
| 186 | * @abstract |
| 187 | * Creates and initializes an OSSet |
| 188 | * populated with the contents of an OSArray. |
| 189 | * |
| 190 | * @param array An array whose objects will be stored in the new OSSet. |
| 191 | * @param capacity The initial storage capacity of the new set object. |
| 192 | * If 0, the capacity is set to the number of objects |
| 193 | * in <code>array</code>; |
| 194 | * otherwise <code>capacity</code> must be greater than or equal to |
| 195 | * the number of objects in <code>array</code>. |
| 196 | * @result |
| 197 | * An instance of OSSet containing |
| 198 | * the objects of <code>array</code>, |
| 199 | * with a retain count of 1; |
| 200 | * <code>NULL</code> on failure. |
| 201 | * |
| 202 | * @discussion |
| 203 | * Each distinct object in <code>array</code> is added to the new set. |
| 204 | * |
| 205 | * <code>array</code> must be non-<code>NULL</code>. |
| 206 | * If <code>capacity</code> is nonzero, |
| 207 | * it must be greater than or equal to <code>count</code>. |
| 208 | * The new OSSet will grow as needed to accommodate more key-object pairs |
| 209 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 210 | * for which the initial capacity is a hard limit). |
| 211 | * |
| 212 | * The objects in <code>array</code> are retained for storage in the new set, |
| 213 | * not copied. |
| 214 | */ |
| 215 | static OSPtr<OSSet> withArray( |
| 216 | const OSArray * array, |
| 217 | unsigned int capacity = 0); |
| 218 | |
| 219 | |
| 220 | /*! |
| 221 | * @function withSet |
| 222 | * |
| 223 | * @abstract |
| 224 | * Creates and initializes an OSSet |
| 225 | * populated with the contents of another OSSet. |
| 226 | * |
| 227 | * @param set An OSSet whose contents will be stored |
| 228 | * in the new instance. |
| 229 | * @param capacity The initial storage capacity of the set object. |
| 230 | * If 0, the capacity is set to the number of objects |
| 231 | * in <code>set</code>; |
| 232 | * otherwise <code>capacity</code> must be greater than or equal to |
| 233 | * the number of objects in <code>array</code>. |
| 234 | * @result |
| 235 | * An instance of OSArray |
| 236 | * containing the objects of <code>set</code>, |
| 237 | * with a retain count of 1; |
| 238 | * <code>NULL</code> on failure. |
| 239 | * |
| 240 | * @discussion |
| 241 | * <code>set</code> must be non-<code>NULL</code>. |
| 242 | * If <code>capacity</code> is nonzero, |
| 243 | * it must be greater than or equal to <code>count</code>. |
| 244 | * The array will grow as needed to accommodate more key-object pairs |
| 245 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 246 | * for which the initial capacity is a hard limit). |
| 247 | * |
| 248 | * The objects in <code>set</code> are retained for storage in the new set, |
| 249 | * not copied. |
| 250 | */ |
| 251 | static OSPtr<OSSet> withSet(const OSSet * set, |
| 252 | unsigned int capacity = 0); |
| 253 | |
| 254 | |
| 255 | /*! |
| 256 | * @function initWithCapacity |
| 257 | * |
| 258 | * @abstract |
| 259 | * Initializes a new instance of OSSet. |
| 260 | * |
| 261 | * @param capacity The initial storage capacity of the new set object. |
| 262 | * |
| 263 | * @result |
| 264 | * <code>true</code> on success, <code>false</code> on failure. |
| 265 | * |
| 266 | * @discussion |
| 267 | * Not for general use. Use the static instance creation method |
| 268 | * <code>@link |
| 269 | * //apple_ref/cpp/clm/OSSet/withCapacity/staticOSSet*\/(unsignedint) |
| 270 | * withCapacity@/link</code> |
| 271 | * instead. |
| 272 | * |
| 273 | * <code>capacity</code> must be nonzero. |
| 274 | * The new set will grow as needed to accommodate more key/object pairs |
| 275 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 276 | * for which the initial capacity is a hard limit). |
| 277 | */ |
| 278 | virtual bool initWithCapacity(unsigned int capacity); |
| 279 | |
| 280 | |
| 281 | /*! |
| 282 | * @function initWithObjects |
| 283 | * |
| 284 | * @abstract |
| 285 | * Initializes a new OSSet populated with objects provided. |
| 286 | * |
| 287 | * @param objects A C array of OSObject-derived objects. |
| 288 | * @param count The number of objects to be placed into the set. |
| 289 | * @param capacity The initial storage capacity of the new set object. |
| 290 | * If 0, <code>count</code> is used; otherwise this value |
| 291 | * must be greater than or equal to <code>count</code>. |
| 292 | * |
| 293 | * @result |
| 294 | * <code>true</code> on success, <code>false</code> on failure. |
| 295 | * |
| 296 | * @discussion |
| 297 | * Not for general use. Use the static instance creation method |
| 298 | * <code>@link |
| 299 | * //apple_ref/cpp/clm/OSSet/withObjects/staticOSSet*\/(constOSObject*,unsignedint,unsignedint) |
| 300 | * withObjects@/link</code> |
| 301 | * instead. |
| 302 | * |
| 303 | * <code>objects</code> must be non-<code>NULL</code>, |
| 304 | * and <code>count</code> must be nonzero. |
| 305 | * If <code>capacity</code> is nonzero, it must be greater than or equal to <code>count</code>. |
| 306 | * The new array will grow as needed to accommodate more key-object pairs |
| 307 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 308 | * for which the initial capacity is a hard limit). |
| 309 | * |
| 310 | * The objects in <code>objects</code> are retained for storage in the new set, |
| 311 | * not copied. |
| 312 | */ |
| 313 | virtual bool initWithObjects( |
| 314 | const OSObject * objects[], |
| 315 | unsigned int count, |
| 316 | unsigned int capacity = 0); |
| 317 | |
| 318 | |
| 319 | /*! |
| 320 | * @function initWithArray |
| 321 | * |
| 322 | * @abstract Initializes a new OSSet |
| 323 | * populated with the contents of an OSArray. |
| 324 | * |
| 325 | * @param array An OSAray whose contents will be placed |
| 326 | * in the new instance. |
| 327 | * @param capacity The initial storage capacity of the new set object. |
| 328 | * If 0, the capacity is set |
| 329 | * to the number of objects in <code>array</code>; |
| 330 | * otherwise <code>capacity</code> must be greater than or equal to |
| 331 | * the number of objects in <code>array</code>. |
| 332 | * |
| 333 | * @result |
| 334 | * <code>true</code> on success, <code>false</code> on failure. |
| 335 | * |
| 336 | * @discussion |
| 337 | * Not for general use. Use the static instance creation method |
| 338 | * <code>@link |
| 339 | * //apple_ref/cpp/clm/OSSet/withArray/staticOSSet*\/(constOSArray*,unsignedint) |
| 340 | * withArray@/link</code> |
| 341 | * instead. |
| 342 | * |
| 343 | * <code>array</code> must be non-<code>NULL</code>. |
| 344 | * If <code>capacity</code> is nonzero, |
| 345 | * it must be greater than or equal to <code>count</code>. |
| 346 | * The new array will grow as needed to accommodate more key-object pairs |
| 347 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 348 | * for which the initial capacity is a hard limit). |
| 349 | * |
| 350 | * The objects in <code>array</code> are retained for storage in the new set, |
| 351 | * not copied. |
| 352 | */ |
| 353 | virtual bool initWithArray( |
| 354 | const OSArray * array, |
| 355 | unsigned int capacity = 0); |
| 356 | |
| 357 | |
| 358 | /*! |
| 359 | * @function initWithSet |
| 360 | * |
| 361 | * @abstract |
| 362 | * Initializes a new OSSet |
| 363 | * populated with the contents of another OSSet. |
| 364 | * |
| 365 | * @param set A set whose contents will be placed in the new instance. |
| 366 | * @param capacity The initial storage capacity of the new set object. |
| 367 | * If 0, the capacity is set |
| 368 | * to the number of objects in <code>set</code>; |
| 369 | * otherwise <code>capacity</code> must be greater than or equal to |
| 370 | * the number of objects in <code>set</code>. |
| 371 | * |
| 372 | * @result |
| 373 | * <code>true</code> on success, <code>false</code> on failure. |
| 374 | * |
| 375 | * @discussion |
| 376 | * Not for general use. Use the static instance creation method |
| 377 | * <code>@link withSet withSet@/link</code> instead. |
| 378 | * |
| 379 | * <code>set</code> must be non-<code>NULL</code>. |
| 380 | * If <code>capacity</code> is nonzero, |
| 381 | * it must be greater than or equal to <code>count</code>. |
| 382 | * The new set will grow as needed to accommodate more key-object pairs |
| 383 | * (<i>unlike</i> @link //apple_ref/doc/uid/20001503 CFMutableSet@/link, |
| 384 | * for which the initial capacity is a hard limit). |
| 385 | * |
| 386 | * The objects in <code>set</code> are retained for storage in the new set, |
| 387 | * not copied. |
| 388 | */ |
| 389 | virtual bool initWithSet(const OSSet *set, |
| 390 | unsigned int capacity = 0); |
| 391 | |
| 392 | |
| 393 | /*! |
| 394 | * @function free |
| 395 | * |
| 396 | * @abstract |
| 397 | * Deallocates or releases any resources |
| 398 | * used by the OSSet instance. |
| 399 | * |
| 400 | * @discussion |
| 401 | * This function should not be called directly; |
| 402 | * use |
| 403 | * <code>@link |
| 404 | * //apple_ref/cpp/instm/OSObject/release/virtualvoid/() |
| 405 | * release@/link</code> |
| 406 | * instead. |
| 407 | */ |
| 408 | virtual void free() APPLE_KEXT_OVERRIDE; |
| 409 | |
| 410 | |
| 411 | /*! |
| 412 | * @function getCount |
| 413 | * |
| 414 | * @abstract |
| 415 | * Returns the current number of objects within the set. |
| 416 | * |
| 417 | * @result |
| 418 | * The current number of objects within the set. |
| 419 | */ |
| 420 | virtual unsigned int getCount() const APPLE_KEXT_OVERRIDE; |
| 421 | |
| 422 | |
| 423 | /*! |
| 424 | * @function getCapacity |
| 425 | * |
| 426 | * @abstract |
| 427 | * Returns the number of objects the set |
| 428 | * can store without reallocating. |
| 429 | * |
| 430 | * @result |
| 431 | * The number objects the set |
| 432 | * can store without reallocating. |
| 433 | * |
| 434 | * @discussion |
| 435 | * OSSet objects grow when full to accommodate additional objects. |
| 436 | * See |
| 437 | * <code>@link |
| 438 | * //apple_ref/cpp/instm/OSSet/getCapacityIncrement/virtualunsignedint/() |
| 439 | * getCapacityIncrement@/link</code> |
| 440 | * and |
| 441 | * <code>@link |
| 442 | * //apple_ref/cpp/instm/OSSet/ensureCapacity/virtualunsignedint/(unsignedint) |
| 443 | * ensureCapacity@/link</code>. |
| 444 | */ |
| 445 | virtual unsigned int getCapacity() const APPLE_KEXT_OVERRIDE; |
| 446 | |
| 447 | |
| 448 | /*! |
| 449 | * @function getCapacityIncrement |
| 450 | * |
| 451 | * @abstract |
| 452 | * Returns the storage increment of the set. |
| 453 | * |
| 454 | * @result |
| 455 | * The storage increment of the set. |
| 456 | * |
| 457 | * @discussion |
| 458 | * An OSSet allocates storage for objects in multiples |
| 459 | * of the capacity increment. |
| 460 | */ |
| 461 | virtual unsigned int getCapacityIncrement() const APPLE_KEXT_OVERRIDE; |
| 462 | |
| 463 | |
| 464 | /*! |
| 465 | * @function setCapacityIncrement |
| 466 | * |
| 467 | * @abstract |
| 468 | * Sets the storage increment of the set. |
| 469 | * |
| 470 | * @result |
| 471 | * The new storage increment of the set, |
| 472 | * which may be different from the number requested. |
| 473 | * |
| 474 | * @discussion |
| 475 | * An OSSet allocates storage for objects in multiples |
| 476 | * of the capacity increment. |
| 477 | * Calling this function does not immediately reallocate storage. |
| 478 | */ |
| 479 | virtual unsigned int setCapacityIncrement(unsigned increment) APPLE_KEXT_OVERRIDE; |
| 480 | |
| 481 | |
| 482 | /*! |
| 483 | * @function ensureCapacity |
| 484 | * |
| 485 | * @abstract |
| 486 | * Ensures the set has enough space |
| 487 | * to store the requested number of distinct objects. |
| 488 | * |
| 489 | * @param newCapacity The total number of distinct objects the set |
| 490 | * should be able to store. |
| 491 | * @result |
| 492 | * The new capacity of the set, |
| 493 | * which may be different from the number requested |
| 494 | * (if smaller, reallocation of storage failed). |
| 495 | * |
| 496 | * @discussion |
| 497 | * This function immediately resizes the set, if necessary, |
| 498 | * to accommodate at least <code>newCapacity</code> distinct objects. |
| 499 | * If <code>newCapacity</code> is not greater than the current capacity, |
| 500 | * or if an allocation error occurs, the original capacity is returned. |
| 501 | * |
| 502 | * There is no way to reduce the capacity of an OSSet. |
| 503 | */ |
| 504 | virtual unsigned int ensureCapacity(unsigned int newCapacity) APPLE_KEXT_OVERRIDE; |
| 505 | |
| 506 | |
| 507 | /*! |
| 508 | * @function flushCollection |
| 509 | * |
| 510 | * @abstract |
| 511 | * Removes and releases all objects within the set. |
| 512 | * |
| 513 | * @discussion |
| 514 | * The set's capacity (and therefore direct memory consumption) |
| 515 | * is not reduced by this function. |
| 516 | */ |
| 517 | virtual void flushCollection() APPLE_KEXT_OVERRIDE; |
| 518 | |
| 519 | |
| 520 | /*! |
| 521 | * @function setObject |
| 522 | * |
| 523 | * @abstract |
| 524 | * Adds an object to the OSSet if it is not already present. |
| 525 | * |
| 526 | * @param anObject The OSMetaClassBase-derived object to be added to the set. |
| 527 | * |
| 528 | * @result |
| 529 | * <code>true</code> if <code>anObject</code> was successfully |
| 530 | * added to the set, <code>false</code> otherwise |
| 531 | * (including if it was already in the set). |
| 532 | * |
| 533 | * @discussion |
| 534 | * The set adds storage to accomodate the new object, if necessary. |
| 535 | * If successfully added, the object is retained. |
| 536 | * |
| 537 | * A <code>false</code> return value can mean either |
| 538 | * that <code>anObject</code> is already present in the set, |
| 539 | * or that a memory allocation failure occurred. |
| 540 | * If you need to know whether the object |
| 541 | * is already present, use |
| 542 | * <code>@link containsObject containsObject@/link</code>. |
| 543 | */ |
| 544 | virtual bool setObject(const OSMetaClassBase * anObject); |
| 545 | |
| 546 | bool setObject(OSSharedPtr<const OSMetaClassBase> const& anObject); |
| 547 | |
| 548 | |
| 549 | /*! |
| 550 | * @function merge |
| 551 | * |
| 552 | * @abstract |
| 553 | * Adds the contents of an OSArray to the set. |
| 554 | * |
| 555 | * @param array The OSArray object containing the objects to be added. |
| 556 | * |
| 557 | * @result |
| 558 | * <code>true</code> if all objects from <code>array</code> |
| 559 | * are successfully added the receiver (or were already present), |
| 560 | * <code>false</code> otherwise. |
| 561 | * |
| 562 | * @discussion |
| 563 | * This functions adds to the receiving set |
| 564 | * all objects from <code>array</code> |
| 565 | * that are not already in the receiving set. |
| 566 | * Objects added to the receiver are retained. |
| 567 | * |
| 568 | * In releases prior to 10.7, this function would return <code>false</code> |
| 569 | * if an object from <code>array</code> was already present in the set, |
| 570 | * or if <code>array</code> was empty. |
| 571 | * This is no longer the case, so this function correctly returns <code>true</code> |
| 572 | * when the semantic of merging is met. |
| 573 | */ |
| 574 | virtual bool merge(const OSArray * array); |
| 575 | |
| 576 | |
| 577 | /*! |
| 578 | * @function merge |
| 579 | * |
| 580 | * @abstract |
| 581 | * Adds the contents of an OSet to the set. |
| 582 | * |
| 583 | * @param set The OSSet object containing the objects to be added. |
| 584 | * |
| 585 | * @result |
| 586 | * <code>true</code> if any object from <code>set</code> |
| 587 | * are successfully added the receiver (or were already present), |
| 588 | * <code>false</code> otherwise. |
| 589 | * |
| 590 | * @discussion |
| 591 | * This functions adds to the receiving set |
| 592 | * all objects from <code>set</code> |
| 593 | * that are not already in the receiving set. |
| 594 | * Objects added to the receiver are retained. |
| 595 | * |
| 596 | * In releases prior to 10.7, this function would return <code>false</code> |
| 597 | * if an object from <code>set</code> was already present in the set, |
| 598 | * or if <code>set</code> was empty. |
| 599 | * This is no longer the case, so this function correctly returns <code>true</code> |
| 600 | * when the semantic of merging is met. |
| 601 | */ |
| 602 | virtual bool merge(const OSSet * set); |
| 603 | |
| 604 | |
| 605 | /*! |
| 606 | * @function removeObject |
| 607 | * |
| 608 | * @abstract |
| 609 | * Removes an object from the set. |
| 610 | * |
| 611 | * @param anObject The OSMetaClassBase-derived object |
| 612 | * to be removed from the set. |
| 613 | * |
| 614 | * @discussion |
| 615 | * The object removed from the set is released. |
| 616 | */ |
| 617 | virtual void removeObject(const OSMetaClassBase * anObject); |
| 618 | |
| 619 | void removeObject(OSSharedPtr<const OSMetaClassBase> const& anObject); |
| 620 | |
| 621 | |
| 622 | /*! |
| 623 | * @function containsObject |
| 624 | * |
| 625 | * @abstract |
| 626 | * Checks the set for the presence of an object. |
| 627 | * |
| 628 | * @param anObject The OSMetaClassBase-derived object |
| 629 | * to check for in the set. |
| 630 | * |
| 631 | * @result |
| 632 | * <code>true</code> if <code>anObject</code> is present within the set, |
| 633 | * <code>false</code> otherwise. |
| 634 | * |
| 635 | * @discussion |
| 636 | * Pointer equality is used. |
| 637 | * This function returns <code>false</code> if passed <code>NULL</code>. |
| 638 | */ |
| 639 | virtual bool containsObject(const OSMetaClassBase * anObject) const; |
| 640 | |
| 641 | |
| 642 | /*! |
| 643 | * @function member |
| 644 | * |
| 645 | * @abstract |
| 646 | * Checks the set for the presence of an object. |
| 647 | * |
| 648 | * @param anObject The OSMetaClassBase-derived object |
| 649 | * to check for in the set. |
| 650 | * |
| 651 | * @result |
| 652 | * <code>true</code> if <code>anObject</code> is present |
| 653 | * within the set, <code>false</code> otherwise. |
| 654 | * |
| 655 | * @discussion |
| 656 | * Pointer equality is used. This function returns <code>false</code> |
| 657 | * if passed <code>NULL</code>. |
| 658 | * |
| 659 | * <code>@link containsObject containsObject@/link</code> |
| 660 | * checks for <code>NULL</code> first, |
| 661 | * and is therefore more efficient than this function. |
| 662 | */ |
| 663 | virtual bool member(const OSMetaClassBase * anObject) const; |
| 664 | |
| 665 | |
| 666 | /*! |
| 667 | * @function getAnyObject |
| 668 | * |
| 669 | * @abstract |
| 670 | * Returns an arbitrary (not random) object from the set. |
| 671 | * |
| 672 | * @result |
| 673 | * An arbitrary (not random) object |
| 674 | * if one exists within the set. |
| 675 | * |
| 676 | * @discussion |
| 677 | * The returned object will be released if removed from the set; |
| 678 | * if you plan to store the reference, you should call |
| 679 | * <code>@link |
| 680 | * //apple_ref/cpp/instm/OSObject/retain/virtualvoid/() |
| 681 | * retain@/link</code> |
| 682 | * on that object. |
| 683 | */ |
| 684 | virtual OSObject * getAnyObject() const; |
| 685 | |
| 686 | |
| 687 | /*! |
| 688 | * @function isEqualTo |
| 689 | * |
| 690 | * @abstract |
| 691 | * Tests the equality of two OSSet objects. |
| 692 | * |
| 693 | * @param aSet The set object being compared against the receiver. |
| 694 | * @result |
| 695 | * <code>true</code> if the two sets are equivalent, |
| 696 | * <code>false</code> otherwise. |
| 697 | * |
| 698 | * @discussion |
| 699 | * Two OSSet objects are considered equal if they have same count |
| 700 | * and the same object pointer values. |
| 701 | */ |
| 702 | virtual bool isEqualTo(const OSSet * aSet) const; |
| 703 | |
| 704 | |
| 705 | /*! |
| 706 | * @function isEqualTo |
| 707 | * |
| 708 | * @abstract |
| 709 | * Tests the equality of an OSSet against an arbitrary object. |
| 710 | * |
| 711 | * @param anObject The object being compared against the receiver. |
| 712 | * @result |
| 713 | * <code>true</code> if the two objects are equivalent, |
| 714 | * <code>false</code> otherwise. |
| 715 | * |
| 716 | * @discussion |
| 717 | * An OSSet object is considered equal to another object if the other object |
| 718 | * is derived from OSSet and compares equal as a set. |
| 719 | */ |
| 720 | virtual bool isEqualTo(const OSMetaClassBase * anObject) const APPLE_KEXT_OVERRIDE; |
| 721 | |
| 722 | |
| 723 | /*! |
| 724 | * @function serialize |
| 725 | * |
| 726 | * @abstract |
| 727 | * Archives the receiver into the provided |
| 728 | * @link //apple_ref/doc/class/OSSerialize OSSerialize@/link object. |
| 729 | * |
| 730 | * @param serializer The OSSerialize object. |
| 731 | * |
| 732 | * @result |
| 733 | * <code>true</code> if serialization succeeds, <code>false</code> if not. |
| 734 | */ |
| 735 | virtual bool serialize(OSSerialize * serializer) const APPLE_KEXT_OVERRIDE; |
| 736 | |
| 737 | |
| 738 | /*! |
| 739 | * @function setOptions |
| 740 | * |
| 741 | * @abstract |
| 742 | * Recursively sets option bits in the set |
| 743 | * and all child collections. |
| 744 | * |
| 745 | * @param options A bitfield whose values turn the options on (1) or off (0). |
| 746 | * @param mask A mask indicating which bits |
| 747 | * in <code>options</code> to change. |
| 748 | * Pass 0 to get the whole current options bitfield |
| 749 | * without changing any settings. |
| 750 | * @param context Unused. |
| 751 | * |
| 752 | * @result |
| 753 | * The options bitfield as it was before the set operation. |
| 754 | * |
| 755 | * @discussion |
| 756 | * Kernel extensions should not call this function. |
| 757 | * |
| 758 | * Child collections' options are changed only if the receiving set's |
| 759 | * options actually change. |
| 760 | */ |
| 761 | virtual unsigned setOptions(unsigned options, unsigned mask, void * context = NULL) APPLE_KEXT_OVERRIDE; |
| 762 | |
| 763 | |
| 764 | /*! |
| 765 | * @function copyCollection |
| 766 | * |
| 767 | * @abstract |
| 768 | * Creates a deep copy of this set and its child collections. |
| 769 | * |
| 770 | * @param cycleDict A dictionary of all of the collections |
| 771 | * that have been copied so far, |
| 772 | * which is used to track circular references. |
| 773 | * To start the copy at the top level, |
| 774 | * pass <code>NULL</code>. |
| 775 | * |
| 776 | * @result |
| 777 | * The newly copied set, with a retain count of 1, |
| 778 | * or <code>NULL</code> if there is insufficient memory to do the copy. |
| 779 | * |
| 780 | * @discussion |
| 781 | * The receiving set, and any collections it contains, |
| 782 | * recursively, are copied. |
| 783 | * Objects that are not derived from OSCollection are retained |
| 784 | * rather than copied. |
| 785 | */ |
| 786 | OSPtr<OSCollection> copyCollection(OSDictionary *cycleDict = NULL) APPLE_KEXT_OVERRIDE; |
| 787 | |
| 788 | OSMetaClassDeclareReservedUnused(OSSet, 0); |
| 789 | OSMetaClassDeclareReservedUnused(OSSet, 1); |
| 790 | OSMetaClassDeclareReservedUnused(OSSet, 2); |
| 791 | OSMetaClassDeclareReservedUnused(OSSet, 3); |
| 792 | OSMetaClassDeclareReservedUnused(OSSet, 4); |
| 793 | OSMetaClassDeclareReservedUnused(OSSet, 5); |
| 794 | OSMetaClassDeclareReservedUnused(OSSet, 6); |
| 795 | OSMetaClassDeclareReservedUnused(OSSet, 7); |
| 796 | }; |
| 797 | |
| 798 | #endif /* !_OS_OSSET_H */ |
| 799 | |