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88e17b57 | 1 | /* GNU Objective C Runtime selector related functions |
a945c346 | 2 | Copyright (C) 1993-2024 Free Software Foundation, Inc. |
88e17b57 BE |
3 | Contributed by Kresten Krab Thorup |
4 | ||
38709cad | 5 | This file is part of GCC. |
88e17b57 | 6 | |
38709cad | 7 | GCC is free software; you can redistribute it and/or modify it under the |
88e17b57 | 8 | terms of the GNU General Public License as published by the Free Software |
748086b7 | 9 | Foundation; either version 3, or (at your option) any later version. |
88e17b57 | 10 | |
38709cad | 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
88e17b57 BE |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more | |
14 | details. | |
15 | ||
748086b7 JJ |
16 | Under Section 7 of GPL version 3, you are granted additional |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | You should have received a copy of the GNU General Public License and | |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
88e17b57 | 24 | |
6dead247 | 25 | #include "objc-private/common.h" |
9ecfa8de | 26 | #include "objc/runtime.h" |
a19fac96 | 27 | #include "objc/thr.h" |
5be9cdc1 | 28 | #include "objc-private/hash.h" |
9ecfa8de NP |
29 | #include "objc-private/objc-list.h" |
30 | #include "objc-private/module-abi-8.h" | |
a19fac96 | 31 | #include "objc-private/runtime.h" |
5d3b14bd | 32 | #include "objc-private/sarray.h" |
1af5b8f5 | 33 | #include "objc-private/selector.h" |
5750872c | 34 | #include <stdlib.h> /* For malloc. */ |
88e17b57 | 35 | |
d4645ada | 36 | /* Initial selector hash table size. Value doesn't matter much. */ |
88e17b57 BE |
37 | #define SELECTOR_HASH_SIZE 128 |
38 | ||
d4645ada | 39 | /* Tables mapping selector names to uid and opposite. */ |
40165636 RB |
40 | static struct sarray *__objc_selector_array = 0; /* uid -> sel !T:MUTEX */ |
41 | static struct sarray *__objc_selector_names = 0; /* uid -> name !T:MUTEX */ | |
88e17b57 BE |
42 | static cache_ptr __objc_selector_hash = 0; /* name -> uid !T:MUTEX */ |
43 | ||
d4645ada | 44 | /* Number of selectors stored in each of the above tables. */ |
b62cc13a | 45 | unsigned int __objc_selector_max_index = 0; /* !T:MUTEX */ |
88e17b57 | 46 | |
600cbba2 NP |
47 | /* Forward-declare an internal function. */ |
48 | static SEL | |
49 | __sel_register_typed_name (const char *name, const char *types, | |
50 | struct objc_selector *orig, BOOL is_const); | |
51 | ||
64cbe55e | 52 | void __objc_init_selector_tables (void) |
88e17b57 BE |
53 | { |
54 | __objc_selector_array = sarray_new (SELECTOR_HASH_SIZE, 0); | |
55 | __objc_selector_names = sarray_new (SELECTOR_HASH_SIZE, 0); | |
56 | __objc_selector_hash | |
270a1283 DA |
57 | = objc_hash_new (SELECTOR_HASH_SIZE, |
58 | (hash_func_type) objc_hash_string, | |
59 | (compare_func_type) objc_compare_strings); | |
88e17b57 BE |
60 | } |
61 | ||
600cbba2 NP |
62 | /* Register a bunch of selectors from the table of selectors in a |
63 | module. 'selectors' should not be NULL. The list is terminated by | |
64 | a selectors with a NULL sel_id. The selectors are assumed to | |
65 | contain the 'name' in the sel_id field; this is replaced with the | |
66 | final selector id after they are registered. */ | |
67 | void | |
68 | __objc_register_selectors_from_module (struct objc_selector *selectors) | |
69 | { | |
70 | int i; | |
71 | ||
72 | for (i = 0; selectors[i].sel_id; ++i) | |
73 | { | |
74 | const char *name, *type; | |
75 | name = (char *) selectors[i].sel_id; | |
76 | type = (char *) selectors[i].sel_types; | |
77 | /* Constructors are constant static data and we can safely store | |
78 | pointers to them in the runtime structures, so we set | |
79 | is_const == YES. */ | |
80 | __sel_register_typed_name (name, type, (struct objc_selector *) &(selectors[i]), | |
81 | /* is_const */ YES); | |
82 | } | |
83 | } | |
84 | ||
d4645ada NP |
85 | /* This routine is given a class and records all of the methods in its |
86 | class structure in the record table. */ | |
88e17b57 BE |
87 | void |
88 | __objc_register_selectors_from_class (Class class) | |
89 | { | |
9ecfa8de | 90 | struct objc_method_list * method_list; |
88e17b57 BE |
91 | |
92 | method_list = class->methods; | |
93 | while (method_list) | |
94 | { | |
435317e2 | 95 | __objc_register_selectors_from_list (method_list); |
88e17b57 BE |
96 | method_list = method_list->method_next; |
97 | } | |
98 | } | |
99 | ||
100 | ||
d4645ada NP |
101 | /* This routine is given a list of methods and records each of the |
102 | methods in the record table. This is the routine that does the | |
103 | actual recording work. | |
88e17b57 | 104 | |
435317e2 | 105 | The name and type pointers in the method list must be permanent and |
d4645ada | 106 | immutable. */ |
435317e2 | 107 | void |
9ecfa8de | 108 | __objc_register_selectors_from_list (struct objc_method_list *method_list) |
88e17b57 BE |
109 | { |
110 | int i = 0; | |
435317e2 AP |
111 | |
112 | objc_mutex_lock (__objc_runtime_mutex); | |
88e17b57 BE |
113 | while (i < method_list->method_count) |
114 | { | |
9ecfa8de | 115 | Method method = &method_list->method_list[i]; |
435317e2 AP |
116 | if (method->method_name) |
117 | { | |
118 | method->method_name | |
119 | = __sel_register_typed_name ((const char *) method->method_name, | |
120 | method->method_types, 0, YES); | |
121 | } | |
88e17b57 BE |
122 | i += 1; |
123 | } | |
435317e2 | 124 | objc_mutex_unlock (__objc_runtime_mutex); |
88e17b57 BE |
125 | } |
126 | ||
f7185d47 NP |
127 | /* The same as __objc_register_selectors_from_list, but works on a |
128 | struct objc_method_description_list* instead of a struct | |
129 | objc_method_list*. This is only used for protocols, which have | |
d4645ada | 130 | lists of method descriptions, not methods. */ |
f7185d47 NP |
131 | void |
132 | __objc_register_selectors_from_description_list | |
133 | (struct objc_method_description_list *method_list) | |
134 | { | |
135 | int i = 0; | |
136 | ||
137 | objc_mutex_lock (__objc_runtime_mutex); | |
138 | while (i < method_list->count) | |
139 | { | |
140 | struct objc_method_description *method = &method_list->list[i]; | |
141 | if (method->name) | |
142 | { | |
143 | method->name | |
144 | = __sel_register_typed_name ((const char *) method->name, | |
145 | method->types, 0, YES); | |
146 | } | |
147 | i += 1; | |
148 | } | |
149 | objc_mutex_unlock (__objc_runtime_mutex); | |
150 | } | |
88e17b57 | 151 | |
d4645ada | 152 | /* Register instance methods as class methods for root classes. */ |
40165636 | 153 | void __objc_register_instance_methods_to_class (Class class) |
88e17b57 | 154 | { |
9ecfa8de NP |
155 | struct objc_method_list *method_list; |
156 | struct objc_method_list *class_method_list; | |
88e17b57 | 157 | int max_methods_no = 16; |
9ecfa8de NP |
158 | struct objc_method_list *new_list; |
159 | Method curr_method; | |
88e17b57 BE |
160 | |
161 | /* Only if a root class. */ | |
40165636 | 162 | if (class->super_class) |
88e17b57 BE |
163 | return; |
164 | ||
d4645ada | 165 | /* Allocate a method list to hold the new class methods. */ |
40165636 | 166 | new_list = objc_calloc (sizeof (struct objc_method_list) |
d4645ada | 167 | + sizeof (struct objc_method[max_methods_no]), 1); |
88e17b57 BE |
168 | method_list = class->methods; |
169 | class_method_list = class->class_pointer->methods; | |
170 | curr_method = &new_list->method_list[0]; | |
d4645ada NP |
171 | |
172 | /* Iterate through the method lists for the class. */ | |
88e17b57 BE |
173 | while (method_list) |
174 | { | |
175 | int i; | |
d4645ada NP |
176 | |
177 | /* Iterate through the methods from this method list. */ | |
88e17b57 BE |
178 | for (i = 0; i < method_list->method_count; i++) |
179 | { | |
9ecfa8de | 180 | Method mth = &method_list->method_list[i]; |
88e17b57 | 181 | if (mth->method_name |
40165636 | 182 | && ! search_for_method_in_list (class_method_list, |
88e17b57 BE |
183 | mth->method_name)) |
184 | { | |
d4645ada NP |
185 | /* This instance method isn't a class method. Add it |
186 | into the new_list. */ | |
88e17b57 | 187 | *curr_method = *mth; |
d4645ada NP |
188 | |
189 | /* Reallocate the method list if necessary. */ | |
40165636 | 190 | if (++new_list->method_count == max_methods_no) |
88e17b57 | 191 | new_list = |
40165636 RB |
192 | objc_realloc (new_list, sizeof (struct objc_method_list) |
193 | + sizeof (struct | |
d4645ada | 194 | objc_method[max_methods_no += 16])); |
88e17b57 BE |
195 | curr_method = &new_list->method_list[new_list->method_count]; |
196 | } | |
197 | } | |
198 | ||
199 | method_list = method_list->method_next; | |
200 | } | |
201 | ||
d4645ada NP |
202 | /* If we created any new class methods then attach the method list |
203 | to the class. */ | |
88e17b57 BE |
204 | if (new_list->method_count) |
205 | { | |
206 | new_list = | |
40165636 | 207 | objc_realloc (new_list, sizeof (struct objc_method_list) |
d4645ada | 208 | + sizeof (struct objc_method[new_list->method_count])); |
88e17b57 BE |
209 | new_list->method_next = class->class_pointer->methods; |
210 | class->class_pointer->methods = new_list; | |
211 | } | |
5af0e6ae AF |
212 | else |
213 | objc_free(new_list); | |
d4645ada NP |
214 | |
215 | __objc_update_dispatch_table_for_class (class->class_pointer); | |
88e17b57 BE |
216 | } |
217 | ||
debfbfee NP |
218 | BOOL |
219 | sel_isEqual (SEL s1, SEL s2) | |
220 | { | |
221 | if (s1 == 0 || s2 == 0) | |
222 | return s1 == s2; | |
223 | else | |
224 | return s1->sel_id == s2->sel_id; | |
225 | } | |
88e17b57 | 226 | |
d4645ada NP |
227 | /* Return YES iff t1 and t2 have same method types. Ignore the |
228 | argframe layout. */ | |
0b0b41a8 | 229 | static BOOL |
40165636 | 230 | sel_types_match (const char *t1, const char *t2) |
88e17b57 | 231 | { |
40165636 | 232 | if (! t1 || ! t2) |
88e17b57 BE |
233 | return NO; |
234 | while (*t1 && *t2) | |
235 | { | |
236 | if (*t1 == '+') t1++; | |
237 | if (*t2 == '+') t2++; | |
40165636 RB |
238 | while (isdigit ((unsigned char) *t1)) t1++; |
239 | while (isdigit ((unsigned char) *t2)) t2++; | |
88e17b57 | 240 | /* xxx Remove these next two lines when qualifiers are put in |
d4645ada | 241 | all selectors, not just Protocol selectors. */ |
40165636 RB |
242 | t1 = objc_skip_type_qualifiers (t1); |
243 | t2 = objc_skip_type_qualifiers (t2); | |
244 | if (! *t1 && ! *t2) | |
88e17b57 BE |
245 | return YES; |
246 | if (*t1 != *t2) | |
247 | return NO; | |
248 | t1++; | |
249 | t2++; | |
250 | } | |
251 | return NO; | |
252 | } | |
253 | ||
d4645ada | 254 | /* Return selector representing name. */ |
88e17b57 BE |
255 | SEL |
256 | sel_get_any_uid (const char *name) | |
257 | { | |
258 | struct objc_list *l; | |
259 | sidx i; | |
260 | ||
40165636 | 261 | objc_mutex_lock (__objc_runtime_mutex); |
88e17b57 | 262 | |
270a1283 | 263 | i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name); |
88e17b57 BE |
264 | if (soffset_decode (i) == 0) |
265 | { | |
40165636 | 266 | objc_mutex_unlock (__objc_runtime_mutex); |
88e17b57 BE |
267 | return 0; |
268 | } | |
269 | ||
40165636 RB |
270 | l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i); |
271 | objc_mutex_unlock (__objc_runtime_mutex); | |
88e17b57 BE |
272 | |
273 | if (l == 0) | |
274 | return 0; | |
275 | ||
40165636 | 276 | return (SEL) l->head; |
88e17b57 BE |
277 | } |
278 | ||
5750872c NP |
279 | SEL |
280 | sel_getTypedSelector (const char *name) | |
281 | { | |
282 | sidx i; | |
5750872c | 283 | |
9cacfc3e NP |
284 | if (name == NULL) |
285 | return NULL; | |
286 | ||
287 | objc_mutex_lock (__objc_runtime_mutex); | |
288 | ||
5750872c NP |
289 | /* Look for a typed selector. */ |
290 | i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name); | |
291 | if (i != 0) | |
292 | { | |
293 | struct objc_list *l; | |
68ade9e4 | 294 | SEL returnValue = NULL; |
5750872c NP |
295 | |
296 | for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i); | |
297 | l; l = l->tail) | |
298 | { | |
299 | SEL s = (SEL) l->head; | |
300 | if (s->sel_types) | |
301 | { | |
68ade9e4 NP |
302 | if (returnValue == NULL) |
303 | { | |
304 | /* First typed selector that we find. Keep it in | |
305 | returnValue, but keep checking as we want to | |
306 | detect conflicts. */ | |
307 | returnValue = s; | |
308 | } | |
309 | else | |
310 | { | |
311 | /* We had already found a typed selectors, so we | |
312 | have multiple ones. Double-check that they have | |
313 | different types, just in case for some reason we | |
314 | got duplicates with the same types. If so, it's | |
315 | OK, we'll ignore the duplicate. */ | |
316 | if (returnValue->sel_types == s->sel_types) | |
317 | continue; | |
318 | else if (sel_types_match (returnValue->sel_types, s->sel_types)) | |
319 | continue; | |
320 | else | |
321 | { | |
322 | /* The types of the two selectors are different; | |
323 | it's a conflict. Too bad. Return NULL. */ | |
324 | objc_mutex_unlock (__objc_runtime_mutex); | |
325 | return NULL; | |
326 | } | |
327 | } | |
5750872c NP |
328 | } |
329 | } | |
68ade9e4 NP |
330 | |
331 | if (returnValue != NULL) | |
332 | { | |
333 | objc_mutex_unlock (__objc_runtime_mutex); | |
334 | return returnValue; | |
335 | } | |
5750872c NP |
336 | } |
337 | ||
338 | /* No typed selector found. Return NULL. */ | |
339 | objc_mutex_unlock (__objc_runtime_mutex); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | SEL * | |
344 | sel_copyTypedSelectorList (const char *name, unsigned int *numberOfReturnedSelectors) | |
345 | { | |
346 | unsigned int count = 0; | |
347 | SEL *returnValue = NULL; | |
348 | sidx i; | |
349 | ||
350 | if (name == NULL) | |
351 | { | |
352 | if (numberOfReturnedSelectors) | |
353 | *numberOfReturnedSelectors = 0; | |
354 | return NULL; | |
355 | } | |
356 | ||
357 | objc_mutex_lock (__objc_runtime_mutex); | |
358 | ||
359 | /* Count how many selectors we have. */ | |
360 | i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name); | |
361 | if (i != 0) | |
362 | { | |
363 | struct objc_list *selector_list = NULL; | |
364 | selector_list = (struct objc_list *) sarray_get_safe (__objc_selector_array, i); | |
365 | ||
366 | /* Count how many selectors we have. */ | |
367 | { | |
368 | struct objc_list *l; | |
369 | for (l = selector_list; l; l = l->tail) | |
370 | count++; | |
371 | } | |
372 | ||
373 | if (count != 0) | |
374 | { | |
375 | /* Allocate enough memory to hold them. */ | |
376 | returnValue = (SEL *)(malloc (sizeof (SEL) * (count + 1))); | |
377 | ||
378 | /* Copy the selectors. */ | |
379 | { | |
380 | unsigned int j; | |
381 | for (j = 0; j < count; j++) | |
382 | { | |
383 | returnValue[j] = (SEL)(selector_list->head); | |
384 | selector_list = selector_list->tail; | |
385 | } | |
386 | returnValue[j] = NULL; | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | objc_mutex_unlock (__objc_runtime_mutex); | |
392 | ||
393 | if (numberOfReturnedSelectors) | |
394 | *numberOfReturnedSelectors = count; | |
395 | ||
396 | return returnValue; | |
397 | } | |
398 | ||
d4645ada NP |
399 | /* Get the name of a selector. If the selector is unknown, the empty |
400 | string "" is returned. */ | |
bc18535a | 401 | const char *sel_getName (SEL selector) |
88e17b57 BE |
402 | { |
403 | const char *ret; | |
404 | ||
524660d2 NP |
405 | if (selector == NULL) |
406 | return "<null selector>"; | |
d4645ada | 407 | |
40165636 RB |
408 | objc_mutex_lock (__objc_runtime_mutex); |
409 | if ((soffset_decode ((sidx)selector->sel_id) > 0) | |
410 | && (soffset_decode ((sidx)selector->sel_id) <= __objc_selector_max_index)) | |
88e17b57 BE |
411 | ret = sarray_get_safe (__objc_selector_names, (sidx) selector->sel_id); |
412 | else | |
413 | ret = 0; | |
40165636 | 414 | objc_mutex_unlock (__objc_runtime_mutex); |
88e17b57 BE |
415 | return ret; |
416 | } | |
417 | ||
418 | BOOL | |
419 | sel_is_mapped (SEL selector) | |
420 | { | |
421 | unsigned int idx = soffset_decode ((sidx)selector->sel_id); | |
422 | return ((idx > 0) && (idx <= __objc_selector_max_index)); | |
423 | } | |
424 | ||
5750872c | 425 | const char *sel_getTypeEncoding (SEL selector) |
88e17b57 BE |
426 | { |
427 | if (selector) | |
428 | return selector->sel_types; | |
429 | else | |
430 | return 0; | |
431 | } | |
432 | ||
d4645ada | 433 | /* The uninstalled dispatch table. */ |
40165636 | 434 | extern struct sarray *__objc_uninstalled_dtable; |
88e17b57 | 435 | |
435317e2 | 436 | /* __sel_register_typed_name allocates lots of struct objc_selector:s |
d4645ada NP |
437 | of 8 (16, if pointers are 64 bits) bytes at startup. To reduce the |
438 | number of malloc calls and memory lost to malloc overhead, we | |
439 | allocate objc_selector:s in blocks here. This is only called from | |
440 | __sel_register_typed_name, and __sel_register_typed_name may only | |
441 | be called when __objc_runtime_mutex is locked. | |
442 | ||
443 | Note that the objc_selector:s allocated from | |
444 | __sel_register_typed_name are never freed. | |
445 | ||
446 | 62 because 62 * sizeof (struct objc_selector) = 496 (992). This | |
447 | should let malloc add some overhead and use a nice, round 512 | |
448 | (1024) byte chunk. */ | |
435317e2 AP |
449 | #define SELECTOR_POOL_SIZE 62 |
450 | static struct objc_selector *selector_pool; | |
451 | static int selector_pool_left; | |
452 | ||
453 | static struct objc_selector * | |
454 | pool_alloc_selector(void) | |
455 | { | |
456 | if (!selector_pool_left) | |
457 | { | |
458 | selector_pool = objc_malloc (sizeof (struct objc_selector) | |
459 | * SELECTOR_POOL_SIZE); | |
460 | selector_pool_left = SELECTOR_POOL_SIZE; | |
461 | } | |
462 | return &selector_pool[--selector_pool_left]; | |
463 | } | |
464 | ||
d4645ada NP |
465 | /* Store the passed selector name in the selector record and return |
466 | its selector value (value returned by sel_get_uid). Assume that | |
467 | the calling function has locked down __objc_runtime_mutex. The | |
600cbba2 | 468 | 'is_const' parameter tells us if the name and types parameters are |
d4645ada NP |
469 | really constant or not. If YES then they are constant and we can |
470 | just store the pointers. If NO then we need to copy name and types | |
600cbba2 NP |
471 | because the pointers may disappear later on. If the 'orig' |
472 | parameter is not NULL, then we are registering a selector from a | |
473 | module, and 'orig' is that selector. In this case, we can put the | |
474 | selector in the tables if needed, and orig->sel_id is updated with | |
475 | the selector ID of the registered selector, and 'orig' is | |
476 | returned. */ | |
477 | static SEL | |
88e17b57 BE |
478 | __sel_register_typed_name (const char *name, const char *types, |
479 | struct objc_selector *orig, BOOL is_const) | |
480 | { | |
40165636 | 481 | struct objc_selector *j; |
88e17b57 BE |
482 | sidx i; |
483 | struct objc_list *l; | |
484 | ||
270a1283 | 485 | i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name); |
88e17b57 BE |
486 | if (soffset_decode (i) != 0) |
487 | { | |
c75534d1 NP |
488 | /* There are already selectors with that name. Examine them to |
489 | see if the one we're registering already exists. */ | |
490 | for (l = (struct objc_list *)sarray_get_safe (__objc_selector_array, i); | |
88e17b57 BE |
491 | l; l = l->tail) |
492 | { | |
c75534d1 | 493 | SEL s = (SEL)l->head; |
88e17b57 BE |
494 | if (types == 0 || s->sel_types == 0) |
495 | { | |
496 | if (s->sel_types == types) | |
497 | { | |
498 | if (orig) | |
499 | { | |
c75534d1 | 500 | orig->sel_id = (void *)i; |
88e17b57 BE |
501 | return orig; |
502 | } | |
503 | else | |
504 | return s; | |
505 | } | |
506 | } | |
85fe6408 | 507 | else if (sel_types_match (s->sel_types, types)) |
88e17b57 BE |
508 | { |
509 | if (orig) | |
510 | { | |
c75534d1 | 511 | orig->sel_id = (void *)i; |
88e17b57 BE |
512 | return orig; |
513 | } | |
514 | else | |
515 | return s; | |
516 | } | |
517 | } | |
c75534d1 NP |
518 | /* A selector with this specific name/type combination does not |
519 | exist yet. We need to register it. */ | |
88e17b57 BE |
520 | if (orig) |
521 | j = orig; | |
522 | else | |
435317e2 | 523 | j = pool_alloc_selector (); |
d4645ada | 524 | |
c75534d1 NP |
525 | j->sel_id = (void *)i; |
526 | /* Can we use the pointer or must we copy types ? Don't copy if | |
d4645ada | 527 | NULL. */ |
88e17b57 | 528 | if ((is_const) || (types == 0)) |
c75534d1 | 529 | j->sel_types = types; |
d4645ada NP |
530 | else |
531 | { | |
c75534d1 NP |
532 | j->sel_types = (char *)objc_malloc (strlen (types) + 1); |
533 | strcpy ((char *)j->sel_types, types); | |
d4645ada | 534 | } |
c75534d1 | 535 | l = (struct objc_list *)sarray_get_safe (__objc_selector_array, i); |
88e17b57 BE |
536 | } |
537 | else | |
538 | { | |
c75534d1 NP |
539 | /* There are no other selectors with this name registered in the |
540 | runtime tables. */ | |
541 | const char *new_name; | |
542 | ||
543 | /* Determine i. */ | |
88e17b57 | 544 | __objc_selector_max_index += 1; |
40165636 | 545 | i = soffset_encode (__objc_selector_max_index); |
c75534d1 NP |
546 | |
547 | /* Prepare the selector. */ | |
88e17b57 BE |
548 | if (orig) |
549 | j = orig; | |
550 | else | |
435317e2 | 551 | j = pool_alloc_selector (); |
d4645ada | 552 | |
c75534d1 NP |
553 | j->sel_id = (void *)i; |
554 | /* Can we use the pointer or must we copy types ? Don't copy if | |
d4645ada | 555 | NULL. */ |
c75534d1 NP |
556 | if (is_const || (types == 0)) |
557 | j->sel_types = types; | |
558 | else | |
559 | { | |
560 | j->sel_types = (char *)objc_malloc (strlen (types) + 1); | |
561 | strcpy ((char *)j->sel_types, types); | |
562 | } | |
563 | ||
564 | /* Since this is the first selector with this name, we need to | |
565 | register the correspondence between 'i' (the sel_id) and | |
566 | 'name' (the actual string) in __objc_selector_names and | |
567 | __objc_selector_hash. */ | |
568 | ||
569 | /* Can we use the pointer or must we copy name ? Don't copy if | |
570 | NULL. (FIXME: Can the name really be NULL here ?) */ | |
571 | if (is_const || (name == 0)) | |
572 | new_name = name; | |
d4645ada NP |
573 | else |
574 | { | |
c75534d1 NP |
575 | new_name = (char *)objc_malloc (strlen (name) + 1); |
576 | strcpy ((char *)new_name, name); | |
d4645ada | 577 | } |
c75534d1 NP |
578 | |
579 | /* This maps the sel_id to the name. */ | |
580 | sarray_at_put_safe (__objc_selector_names, i, (void *)new_name); | |
581 | ||
582 | /* This maps the name to the sel_id. */ | |
583 | objc_hash_add (&__objc_selector_hash, (void *)new_name, (void *)i); | |
584 | ||
88e17b57 BE |
585 | l = 0; |
586 | } | |
587 | ||
588 | DEBUG_PRINTF ("Record selector %s[%s] as: %ld\n", name, types, | |
c75534d1 NP |
589 | (long)soffset_decode (i)); |
590 | ||
591 | /* Now add the selector to the list of selectors with that id. */ | |
592 | l = list_cons ((void *)j, l); | |
593 | sarray_at_put_safe (__objc_selector_array, i, (void *)l); | |
594 | ||
40165636 | 595 | sarray_realloc (__objc_uninstalled_dtable, __objc_selector_max_index + 1); |
d4645ada | 596 | |
c75534d1 | 597 | return (SEL)j; |
88e17b57 BE |
598 | } |
599 | ||
600 | SEL | |
bc18535a | 601 | sel_registerName (const char *name) |
88e17b57 BE |
602 | { |
603 | SEL ret; | |
9cacfc3e NP |
604 | |
605 | if (name == NULL) | |
606 | return NULL; | |
88e17b57 | 607 | |
40165636 | 608 | objc_mutex_lock (__objc_runtime_mutex); |
88e17b57 | 609 | /* Assume that name is not constant static memory and needs to be |
d4645ada | 610 | copied before put into a runtime structure. is_const == NO. */ |
88e17b57 | 611 | ret = __sel_register_typed_name (name, 0, 0, NO); |
40165636 | 612 | objc_mutex_unlock (__objc_runtime_mutex); |
88e17b57 BE |
613 | |
614 | return ret; | |
615 | } | |
616 | ||
bc18535a NP |
617 | SEL |
618 | sel_registerTypedName (const char *name, const char *type) | |
88e17b57 BE |
619 | { |
620 | SEL ret; | |
435317e2 | 621 | |
9cacfc3e NP |
622 | if (name == NULL) |
623 | return NULL; | |
624 | ||
40165636 | 625 | objc_mutex_lock (__objc_runtime_mutex); |
d4645ada NP |
626 | /* Assume that name and type are not constant static memory and need |
627 | to be copied before put into a runtime structure. is_const == | |
628 | NO. */ | |
88e17b57 | 629 | ret = __sel_register_typed_name (name, type, 0, NO); |
40165636 | 630 | objc_mutex_unlock (__objc_runtime_mutex); |
88e17b57 BE |
631 | |
632 | return ret; | |
633 | } | |
bc18535a | 634 | |
d4645ada | 635 | /* Return the selector representing name. */ |
bc18535a NP |
636 | SEL |
637 | sel_getUid (const char *name) | |
638 | { | |
639 | return sel_registerTypedName (name, 0); | |
640 | } |