Commit | Line | Data |
---|---|---|
4b6bf174 NC |
1 | #define PERL_NO_GET_CONTEXT |
2 | ||
1e73acc8 AS |
3 | #include "EXTERN.h" |
4 | #include "perl.h" | |
5 | #include "XSUB.h" | |
6 | ||
7 | /* support for Hash::Util::FieldHash, prefix HUF_ */ | |
8 | ||
6ff38c27 AS |
9 | /* A Perl sub that returns a hashref to the object registry */ |
10 | #define HUF_OB_REG "Hash::Util::FieldHash::_ob_reg" | |
d74d639b AS |
11 | /* Identifier for PERL_MAGIC_ext magic */ |
12 | #define HUF_IDCACHE 0x4944 | |
1e73acc8 | 13 | |
1e73acc8 AS |
14 | /* For global cache of object registry */ |
15 | #define MY_CXT_KEY "Hash::Util::FieldHash::_guts" XS_VERSION | |
16 | typedef struct { | |
17 | HV* ob_reg; /* Cache object registry */ | |
18 | } my_cxt_t; | |
19 | START_MY_CXT | |
20 | ||
6ff38c27 | 21 | /* Inquire the object registry (a lexical hash) from perl */ |
4b6bf174 NC |
22 | HV * |
23 | HUF_get_ob_reg(pTHX) { | |
6ff38c27 | 24 | dSP; |
91dba0be | 25 | HV* ob_reg = NULL; |
0dbc1c87 | 26 | I32 items; |
91dba0be AS |
27 | ENTER; |
28 | SAVETMPS; | |
29 | ||
30 | PUSHMARK(SP); | |
0dbc1c87 | 31 | items = call_pv(HUF_OB_REG, G_SCALAR|G_NOARGS); |
6ff38c27 | 32 | SPAGAIN; |
91dba0be | 33 | |
45552c86 | 34 | if (items == 1 && TOPs && SvROK(TOPs) && SvTYPE(SvRV(TOPs)) == SVt_PVHV) |
91dba0be | 35 | ob_reg = (HV*)SvRV(POPs); |
91dba0be AS |
36 | PUTBACK; |
37 | FREETMPS; | |
38 | LEAVE; | |
39 | ||
45552c86 AS |
40 | if (!ob_reg) |
41 | Perl_die(aTHX_ "Can't get object registry hash"); | |
42 | return ob_reg; | |
6ff38c27 AS |
43 | } |
44 | ||
1e73acc8 AS |
45 | /* Deal with global context */ |
46 | #define HUF_INIT 1 | |
47 | #define HUF_CLONE 0 | |
48 | #define HUF_RESET -1 | |
49 | ||
4b6bf174 NC |
50 | void |
51 | HUF_global(pTHX_ I32 how) { | |
1e73acc8 AS |
52 | if (how == HUF_INIT) { |
53 | MY_CXT_INIT; | |
4b6bf174 | 54 | MY_CXT.ob_reg = HUF_get_ob_reg(aTHX); |
1e73acc8 AS |
55 | } else if (how == HUF_CLONE) { |
56 | MY_CXT_CLONE; | |
4b6bf174 | 57 | MY_CXT.ob_reg = HUF_get_ob_reg(aTHX); |
1e73acc8 AS |
58 | } else if (how == HUF_RESET) { |
59 | dMY_CXT; | |
4b6bf174 | 60 | MY_CXT.ob_reg = HUF_get_ob_reg(aTHX); |
1e73acc8 AS |
61 | } |
62 | } | |
63 | ||
d74d639b | 64 | /* Object id */ |
1e73acc8 | 65 | |
d74d639b AS |
66 | /* definition of id transformation */ |
67 | #define HUF_OBJ_ID(x) newSVuv(PTR2UV(x)) | |
1e73acc8 | 68 | |
4b6bf174 NC |
69 | SV * |
70 | HUF_obj_id(pTHX_ SV *obj) { | |
d74d639b AS |
71 | SV *item = SvRV(obj); |
72 | MAGIC *mg; | |
73 | SV *id; | |
74 | ||
75 | /* Get cached object ID, if it exists */ | |
76 | if (SvTYPE(item) >= SVt_PVMG) { | |
77 | for ( mg = SvMAGIC(item); mg; mg = mg->mg_moremagic ) { | |
78 | if ((mg->mg_type == PERL_MAGIC_ext) && | |
79 | (mg->mg_private == HUF_IDCACHE) | |
80 | ) { | |
81 | return mg->mg_obj; | |
82 | } | |
83 | } | |
84 | } | |
85 | ||
86 | /* Create an object ID, cache it */ | |
87 | id = HUF_OBJ_ID(item); | |
88 | mg = sv_magicext(item, id, PERL_MAGIC_ext, NULL, NULL, 0); | |
89 | mg->mg_private = HUF_IDCACHE; | |
f72763ca | 90 | SvREFCNT_dec(id); /* refcnt++ in sv_magicext() */ |
d74d639b AS |
91 | |
92 | /* Return the object ID */ | |
93 | return id; | |
1e73acc8 AS |
94 | } |
95 | ||
96 | /* set up uvar magic for any sv */ | |
4b6bf174 NC |
97 | void |
98 | HUF_add_uvar_magic( | |
99 | pTHX_ | |
6ff38c27 | 100 | SV* sv, /* the sv to enchant, visible to get/set */ |
1e73acc8 AS |
101 | I32(* val)(pTHX_ IV, SV*), /* "get" function */ |
102 | I32(* set)(pTHX_ IV, SV*), /* "set" function */ | |
103 | I32 index, /* get/set will see this */ | |
104 | SV* thing /* any associated info */ | |
105 | ) { | |
1e73acc8 AS |
106 | struct ufuncs uf; |
107 | uf.uf_val = val; | |
108 | uf.uf_set = set; | |
109 | uf.uf_index = index; | |
110 | sv_magic(sv, thing, PERL_MAGIC_uvar, (char*)&uf, sizeof(uf)); | |
111 | } | |
112 | ||
113 | /* Fetch the data container of a trigger */ | |
4b6bf174 NC |
114 | AV * |
115 | HUF_get_trigger_content(pTHX_ SV *trigger) { | |
1e73acc8 AS |
116 | MAGIC* mg; |
117 | if (trigger && (mg = mg_find(trigger, PERL_MAGIC_uvar))) | |
118 | return (AV*)mg->mg_obj; | |
119 | return NULL; | |
120 | } | |
121 | ||
122 | /* Delete an object from all field hashes it may occur in. Also delete | |
c418a2d4 AS |
123 | * the object's entry from the object registry. This function goes in |
124 | * the uf_set field of the uvar magic of a trigger. | |
1e73acc8 | 125 | */ |
4b6bf174 | 126 | I32 HUF_destroy_obj(pTHX_ IV index, SV *trigger) { |
c33e8be1 | 127 | PERL_UNUSED_ARG(index); |
1e73acc8 AS |
128 | /* Do nothing if the weakref wasn't undef'd. Also don't bother |
129 | * during global destruction. (MY_CXT.ob_reg is sometimes funny there) */ | |
130 | if (!SvROK(trigger) && (!PL_in_clean_all)) { | |
131 | dMY_CXT; | |
4b6bf174 | 132 | AV* cont = HUF_get_trigger_content(aTHX_ trigger); |
1e73acc8 AS |
133 | SV* ob_id = *av_fetch(cont, 0, 0); |
134 | HV* field_tab = (HV*) *av_fetch(cont, 1, 0); | |
135 | HE* ent; | |
136 | hv_iterinit(field_tab); | |
c33e8be1 | 137 | while ((ent = hv_iternext(field_tab))) { |
1e73acc8 AS |
138 | SV* field_ref = HeVAL(ent); |
139 | SV* field = SvRV(field_ref); | |
c33e8be1 | 140 | (void) hv_delete_ent((HV*)field, ob_id, 0, 0); |
1e73acc8 AS |
141 | } |
142 | /* make it safe in case we must run in global clenaup, after all */ | |
143 | if (PL_in_clean_all) | |
4b6bf174 | 144 | HUF_global(aTHX_ HUF_RESET); /* shoudn't be needed */ |
c33e8be1 | 145 | (void) hv_delete_ent(MY_CXT.ob_reg, ob_id, 0, 0); |
1e73acc8 AS |
146 | } |
147 | return 0; | |
148 | } | |
149 | ||
d74d639b AS |
150 | /* Create a trigger for an object. The trigger is a magical SV |
151 | * that holds a weak ref to the object. The magic fires when the object | |
152 | * expires and takes care of garbage collection in registred hashes. | |
153 | * For that purpose, the magic structure holds the original id of | |
154 | * the object, and a list (a hash, really) of hashes from which the | |
155 | * object may * have to be deleted. The trigger is stored in the | |
156 | * object registry and is also deleted when the object expires. | |
1e73acc8 | 157 | */ |
4b6bf174 NC |
158 | SV * |
159 | HUF_new_trigger(pTHX_ SV *obj, SV *ob_id) { | |
1e73acc8 AS |
160 | dMY_CXT; |
161 | SV* trigger = sv_rvweaken(newRV_inc(SvRV(obj))); | |
162 | AV* cont = newAV(); | |
163 | sv_2mortal((SV*)cont); | |
164 | av_store(cont, 0, SvREFCNT_inc(ob_id)); | |
165 | av_store(cont, 1, (SV*)newHV()); | |
4b6bf174 | 166 | HUF_add_uvar_magic(aTHX_ trigger, NULL, &HUF_destroy_obj, 0, (SV*)cont); |
c33e8be1 | 167 | (void) hv_store_ent(MY_CXT.ob_reg, ob_id, trigger, 0); |
1e73acc8 AS |
168 | return trigger; |
169 | } | |
170 | ||
171 | /* retrieve a trigger for obj if one exists, return NULL otherwise */ | |
4b6bf174 NC |
172 | SV * |
173 | HUF_ask_trigger(pTHX_ SV *ob_id) { | |
1e73acc8 AS |
174 | dMY_CXT; |
175 | HE* ent; | |
c33e8be1 | 176 | if ((ent = hv_fetch_ent(MY_CXT.ob_reg, ob_id, 0, 0))) |
1e73acc8 AS |
177 | return HeVAL(ent); |
178 | return NULL; | |
179 | } | |
180 | ||
181 | /* get the trigger for an object, creating it if necessary */ | |
4b6bf174 NC |
182 | SV * |
183 | HUF_get_trigger0(pTHX_ SV *obj, SV *ob_id) { | |
1e73acc8 | 184 | SV* trigger; |
4b6bf174 NC |
185 | if (!(trigger = HUF_ask_trigger(aTHX_ ob_id))) |
186 | trigger = HUF_new_trigger(aTHX_ obj, ob_id); | |
1e73acc8 AS |
187 | return trigger; |
188 | } | |
189 | ||
4b6bf174 NC |
190 | SV * |
191 | HUF_get_trigger(pTHX_ SV *obj, SV *ob_id) { | |
192 | SV* trigger = HUF_ask_trigger(aTHX_ ob_id); | |
d74d639b | 193 | if (!trigger) |
4b6bf174 | 194 | trigger = HUF_new_trigger(aTHX_ obj, ob_id); |
d74d639b AS |
195 | return( trigger); |
196 | } | |
197 | ||
198 | /* mark an object (trigger) as having been used with a field | |
199 | (a clenup-liability) | |
200 | */ | |
4b6bf174 NC |
201 | void |
202 | HUF_mark_field(pTHX_ SV *trigger, SV *field) { | |
203 | AV* cont = HUF_get_trigger_content(aTHX_ trigger); | |
1e73acc8 AS |
204 | HV* field_tab = (HV*) *av_fetch(cont, 1, 0); |
205 | SV* field_ref = newRV_inc(field); | |
d74d639b | 206 | UV field_addr = PTR2UV(field); |
c33e8be1 | 207 | (void) hv_store(field_tab, (char *)&field_addr, sizeof(field_addr), field_ref, 0); |
1e73acc8 AS |
208 | } |
209 | ||
d74d639b AS |
210 | /* Determine, from the value of action, whether this call may create a new |
211 | * hash key */ | |
324a0d18 | 212 | #define HUF_WOULD_CREATE_KEY(x) ((x) != HV_DELETE && ((x) & (HV_FETCH_ISSTORE | HV_FETCH_LVALUE))) |
a607227a | 213 | |
d74d639b | 214 | /* The key exchange functions. They communicate with S_hv_magic_uvar_xkey |
1e73acc8 | 215 | * in hv.c */ |
d74d639b | 216 | I32 HUF_watch_key_safe(pTHX_ IV action, SV* field) { |
1e73acc8 | 217 | MAGIC* mg = mg_find(field, PERL_MAGIC_uvar); |
6ff38c27 | 218 | SV* keysv; |
d74d639b AS |
219 | if (mg && (keysv = mg->mg_obj)) { |
220 | if (SvROK(keysv)) { /* ref key */ | |
4b6bf174 | 221 | SV* ob_id = HUF_obj_id(aTHX_ keysv); |
45552c86 AS |
222 | mg->mg_obj = ob_id; /* key replacement */ |
223 | if (HUF_WOULD_CREATE_KEY(action)) { | |
4b6bf174 NC |
224 | SV* trigger = HUF_get_trigger(aTHX_ keysv, ob_id); |
225 | HUF_mark_field(aTHX_ trigger, field); | |
45552c86 | 226 | } |
d74d639b AS |
227 | } else if (HUF_WOULD_CREATE_KEY(action)) { /* string key */ |
228 | /* registered as object id? */ | |
229 | SV* trigger; | |
4b6bf174 NC |
230 | if (( trigger = HUF_ask_trigger(aTHX_ keysv))) |
231 | HUF_mark_field(aTHX_ trigger, field); | |
a607227a | 232 | } |
45552c86 | 233 | } else { |
d74d639b AS |
234 | Perl_die(aTHX_ "Rogue call of 'HUF_watch_key_safe'"); |
235 | } | |
236 | return 0; | |
237 | } | |
238 | ||
239 | I32 HUF_watch_key_id(pTHX_ IV action, SV* field) { | |
240 | MAGIC* mg = mg_find(field, PERL_MAGIC_uvar); | |
241 | SV* keysv; | |
c33e8be1 | 242 | PERL_UNUSED_ARG(action); |
d74d639b AS |
243 | if (mg && (keysv = mg->mg_obj)) { |
244 | if (SvROK(keysv)) /* ref key */ | |
4b6bf174 | 245 | mg->mg_obj = HUF_obj_id(aTHX_ keysv); /* key replacement */ |
d74d639b AS |
246 | } else { |
247 | Perl_die(aTHX_ "Rogue call of 'HUF_watch_key_id'"); | |
1e73acc8 AS |
248 | } |
249 | return 0; | |
250 | } | |
251 | ||
d74d639b AS |
252 | int HUF_func_2mode( I32(* val)(pTHX_ IV, SV*)) { |
253 | int ans = 0; | |
254 | if (val == &HUF_watch_key_id) | |
255 | ans = 1; | |
256 | if (val == &HUF_watch_key_safe) | |
257 | ans = 2; | |
258 | return(ans); | |
259 | } | |
260 | ||
261 | I32(* HUF_mode_2func( int mode))(pTHX_ IV, SV*) { | |
262 | I32(* ans)(pTHX_ IV, SV*) = NULL; | |
263 | switch (mode) { | |
264 | case 1: | |
265 | ans = &HUF_watch_key_id; | |
266 | break; | |
267 | case 2: | |
268 | ans = &HUF_watch_key_safe; | |
269 | break; | |
270 | } | |
271 | return(ans); | |
272 | } | |
273 | ||
51a5b41d | 274 | /* see if something is a field hash */ |
4b6bf174 NC |
275 | int |
276 | HUF_get_status(pTHX_ HV *hash) { | |
51a5b41d SH |
277 | int ans = 0; |
278 | if (hash && (SvTYPE(hash) == SVt_PVHV)) { | |
279 | MAGIC* mg; | |
280 | struct ufuncs* uf; | |
281 | if ((mg = mg_find((SV*)hash, PERL_MAGIC_uvar)) && | |
282 | (uf = (struct ufuncs *)mg->mg_ptr) && | |
283 | (uf->uf_set == NULL) | |
284 | ) { | |
285 | ans = HUF_func_2mode(uf->uf_val); | |
286 | } | |
287 | } | |
288 | return ans; | |
289 | } | |
290 | ||
1e73acc8 AS |
291 | /* Thread support. These routines are called by CLONE (and nothing else) */ |
292 | ||
293 | /* Fix entries for one object in all field hashes */ | |
4b6bf174 NC |
294 | void |
295 | HUF_fix_trigger(pTHX_ SV *trigger, SV *new_id) { | |
296 | AV* cont = HUF_get_trigger_content(aTHX_ trigger); | |
1e73acc8 AS |
297 | HV* field_tab = (HV*) *av_fetch(cont, 1, 0); |
298 | HV* new_tab = newHV(); | |
299 | HE* ent; | |
300 | SV* old_id = *av_fetch(cont, 0, 0); | |
301 | hv_iterinit(field_tab); | |
c33e8be1 | 302 | while ((ent = hv_iternext(field_tab))) { |
1e73acc8 | 303 | SV* field_ref = HeVAL(ent); |
1e73acc8 | 304 | HV* field = (HV*)SvRV(field_ref); |
d74d639b | 305 | UV field_addr = PTR2UV(field); |
1e73acc8 AS |
306 | SV* val; |
307 | /* recreate field tab entry */ | |
c33e8be1 | 308 | (void) hv_store(new_tab, (char *)&field_addr, sizeof(field_addr), SvREFCNT_inc(field_ref), 0); |
1e73acc8 | 309 | /* recreate field entry, if any */ |
c33e8be1 Z |
310 | if ((val = hv_delete_ent(field, old_id, 0, 0))) |
311 | (void) hv_store_ent(field, new_id, SvREFCNT_inc(val), 0); | |
1e73acc8 AS |
312 | } |
313 | /* update the trigger */ | |
314 | av_store(cont, 0, SvREFCNT_inc(new_id)); | |
315 | av_store(cont, 1, (SV*)new_tab); | |
316 | } | |
317 | ||
318 | /* Go over object registry and fix all objects. Also fix the object | |
319 | * registry. | |
320 | */ | |
4b6bf174 NC |
321 | void |
322 | HUF_fix_objects(pTHX) { | |
1e73acc8 AS |
323 | dMY_CXT; |
324 | I32 i, len; | |
325 | HE* ent; | |
326 | AV* oblist = (AV*)sv_2mortal((SV*)newAV()); | |
327 | hv_iterinit(MY_CXT.ob_reg); | |
c33e8be1 | 328 | while((ent = hv_iternext(MY_CXT.ob_reg))) |
1e73acc8 AS |
329 | av_push(oblist, SvREFCNT_inc(hv_iterkeysv(ent))); |
330 | len = av_len(oblist); | |
331 | for (i = 0; i <= len; ++i) { | |
332 | SV* old_id = *av_fetch(oblist, i, 0); | |
333 | SV* trigger = hv_delete_ent(MY_CXT.ob_reg, old_id, 0, 0); | |
d74d639b AS |
334 | SV* obj = SvRV(trigger); |
335 | MAGIC *mg; | |
336 | ||
337 | SV* new_id = HUF_OBJ_ID(obj); | |
338 | ||
339 | /* Replace cached object ID with this new one */ | |
340 | for (mg = SvMAGIC(obj); mg; mg = mg->mg_moremagic) { | |
341 | if ((mg->mg_type == PERL_MAGIC_ext) && | |
342 | (mg->mg_private == HUF_IDCACHE) | |
343 | ) { | |
344 | mg->mg_obj = new_id; | |
345 | } | |
346 | } | |
347 | ||
4b6bf174 | 348 | HUF_fix_trigger(aTHX_ trigger, new_id); |
c33e8be1 | 349 | (void) hv_store_ent(MY_CXT.ob_reg, new_id, SvREFCNT_inc(trigger), 0); |
1e73acc8 AS |
350 | } |
351 | } | |
352 | ||
353 | /* test support (not needed for functionality) */ | |
354 | ||
355 | static SV* counter; | |
1748121c | 356 | I32 HUF_inc_var(pTHX_ IV index, SV* which) { |
c33e8be1 Z |
357 | PERL_UNUSED_ARG(index); |
358 | PERL_UNUSED_ARG(which); | |
1e73acc8 AS |
359 | sv_setiv(counter, 1 + SvIV(counter)); |
360 | return 0; | |
361 | } | |
362 | ||
363 | MODULE = Hash::Util::FieldHash PACKAGE = Hash::Util::FieldHash | |
364 | ||
365 | BOOT: | |
366 | { | |
4b6bf174 | 367 | HUF_global(aTHX_ HUF_INIT); /* create variables */ |
1e73acc8 AS |
368 | } |
369 | ||
370 | int | |
371 | _fieldhash(SV* href, int mode) | |
372 | PROTOTYPE: $$ | |
373 | CODE: | |
374 | HV* field; | |
375 | RETVAL = 0; | |
376 | if (mode && | |
377 | href && SvROK(href) && | |
378 | (field = (HV*)SvRV(href)) && | |
379 | SvTYPE(field) == SVt_PVHV | |
380 | ) { | |
d74d639b | 381 | |
1e73acc8 | 382 | HUF_add_uvar_magic( |
4b6bf174 | 383 | aTHX_ |
1e73acc8 | 384 | SvRV(href), |
4b6bf174 | 385 | HUF_mode_2func(mode), |
1e73acc8 AS |
386 | NULL, |
387 | 0, | |
388 | NULL | |
389 | ); | |
4b6bf174 | 390 | RETVAL = HUF_get_status(aTHX_ field); |
1e73acc8 AS |
391 | } |
392 | OUTPUT: | |
393 | RETVAL | |
394 | ||
395 | void | |
d74d639b | 396 | id(SV* ref) |
3ae03d21 | 397 | PROTOTYPE: $ |
d74d639b AS |
398 | PPCODE: |
399 | if (SvROK(ref)) { | |
4b6bf174 | 400 | XPUSHs(HUF_obj_id(aTHX_ ref)); |
d74d639b AS |
401 | } else { |
402 | XPUSHs(ref); | |
403 | } | |
404 | ||
405 | SV* | |
406 | id_2obj(SV* id) | |
407 | PROTOTYPE: $ | |
408 | CODE: | |
4b6bf174 | 409 | SV* obj = HUF_ask_trigger(aTHX_ id); |
d74d639b AS |
410 | if (obj) { |
411 | RETVAL = newRV_inc(SvRV(obj)); | |
412 | } else { | |
413 | RETVAL = &PL_sv_undef; | |
414 | } | |
415 | OUTPUT: | |
416 | RETVAL | |
417 | ||
418 | SV* | |
419 | register(SV* obj, ...) | |
420 | PROTOTYPE: $@ | |
421 | CODE: | |
422 | SV* trigger; | |
423 | int i; | |
424 | RETVAL = NULL; | |
425 | if (!SvROK(obj)) { | |
426 | Perl_die(aTHX_ "Attempt to register a non-ref"); | |
427 | } else { | |
428 | RETVAL = newRV_inc(SvRV(obj)); | |
429 | } | |
4b6bf174 | 430 | trigger = HUF_get_trigger(aTHX_ obj, HUF_obj_id(aTHX_ obj)); |
d74d639b AS |
431 | for (i = 1; i < items; ++ i) { |
432 | SV* field_ref = POPs; | |
433 | if (SvROK(field_ref) && (SvTYPE(SvRV(field_ref)) == SVt_PVHV)) { | |
4b6bf174 | 434 | HUF_mark_field(aTHX_ trigger, SvRV(field_ref)); |
d74d639b AS |
435 | } |
436 | } | |
437 | OUTPUT: | |
438 | RETVAL | |
439 | ||
440 | void | |
87d46f97 | 441 | CLONE(char* classname) |
1e73acc8 | 442 | CODE: |
87d46f97 | 443 | if (0 == strcmp(classname, "Hash::Util::FieldHash")) { |
4b6bf174 NC |
444 | HUF_global(aTHX_ HUF_CLONE); |
445 | HUF_fix_objects(aTHX); | |
1e73acc8 AS |
446 | } |
447 | ||
c418a2d4 | 448 | void |
1e73acc8 AS |
449 | _active_fields(SV* obj) |
450 | PPCODE: | |
451 | if (SvROK(obj)) { | |
4b6bf174 NC |
452 | SV* ob_id = HUF_obj_id(aTHX_ obj); |
453 | SV* trigger = HUF_ask_trigger(aTHX_ ob_id); | |
1e73acc8 | 454 | if (trigger) { |
4b6bf174 | 455 | AV* cont = HUF_get_trigger_content(aTHX_ trigger); |
1e73acc8 AS |
456 | HV* field_tab = (HV*) *av_fetch(cont, 1, 0); |
457 | HE* ent; | |
458 | hv_iterinit(field_tab); | |
c33e8be1 | 459 | while ((ent = hv_iternext(field_tab))) { |
1e73acc8 AS |
460 | HV* field = (HV*)SvRV(HeVAL(ent)); |
461 | if (hv_exists_ent(field, ob_id, 0)) | |
462 | XPUSHs(sv_2mortal(newRV_inc((SV*)field))); | |
463 | } | |
464 | } | |
465 | } | |
466 | ||
467 | void | |
468 | _test_uvar_get(SV* svref, SV* countref) | |
ff0c75af NC |
469 | ALIAS: |
470 | _test_uvar_get = 1 | |
471 | _test_uvar_set = 2 | |
472 | _test_uvar_same = 3 | |
1e73acc8 AS |
473 | CODE: |
474 | if (SvROK(svref) && SvROK(countref)) { | |
475 | counter = SvRV(countref); | |
476 | sv_setiv(counter, 0); | |
477 | HUF_add_uvar_magic( | |
4b6bf174 | 478 | aTHX_ |
1e73acc8 | 479 | SvRV(svref), |
ff0c75af NC |
480 | ix & 1 ? &HUF_inc_var : 0, |
481 | ix & 2 ? &HUF_inc_var : 0, | |
482 | 0, | |
1e73acc8 AS |
483 | SvRV(countref) |
484 | ); | |
485 | } |