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1 | /* shared.xs |
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2 | * |
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3 | * Copyright (c) 2001-2002, 2006 Larry Wall |
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4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
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8 | * "Hand any two wizards a piece of rope and they would instinctively pull in |
9 | * opposite directions." |
10 | * --Sourcery |
11 | * |
12 | * Contributed by Arthur Bergman arthur@contiller.se |
13 | * pulled in the (an)other direction by Nick Ing-Simmons nick@ing-simmons.net |
14 | */ |
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15 | |
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16 | /* |
17 | * Shared variables are implemented by a scheme similar to tieing. |
18 | * Each thread has a proxy SV with attached magic -- "private SVs" -- |
19 | * which all point to a single SV in a separate shared interpreter |
20 | * (PL_sharedsv_space) -- "shared SVs". |
21 | * |
22 | * The shared SV holds the variable's true values, and its state is |
23 | * copied between the shared and private SVs with the usual |
24 | * mg_get()/mg_set() arrangement. |
25 | * |
26 | * Aggregates (AVs and HVs) are implemented using tie magic, except that |
27 | * the vtable used is one defined in this file rather than the standard one. |
28 | * This means that where a tie function like is FETCH is normally invoked by |
29 | * the tie magic's mg_get() function, we completely bypass the calling of a |
30 | * perl-level function, and directly call C-level code to handle it. On |
31 | * the other hand. calls to functions like PUSH are done directly by code |
32 | * in av.c etc, which we can't bypass. So the best we can do is to provide |
33 | * XS versions of these functions. We also have to attach a tie object, |
34 | * blessed into the class threads::shared::tie, to keep the method-calling |
35 | * code happy. |
36 | * |
37 | * Access to aggregate elements is done the usual tied way by returning a |
38 | * proxy PVLV element with attached element magic. |
39 | * |
40 | * Pointers to the shared SV are squirrelled away in the mg->mg_ptr field |
41 | * of magic (with mg_len == 0), and in the IV2PTR(SvIV(sv)) field of tied |
42 | * object SVs. These pointers have to be hidden like this because they |
43 | * cross interpreter boundaries, and we don't want sv_clear() and friends |
44 | * following them. |
45 | * |
46 | * The three basic shared types look like the following: |
47 | * |
48 | * ----------------- |
49 | * |
50 | * Shared scalar (my $s : shared): |
51 | * |
52 | * SV = PVMG(0x7ba238) at 0x7387a8 |
53 | * FLAGS = (PADMY,GMG,SMG) |
54 | * MAGIC = 0x824d88 |
55 | * MG_TYPE = PERL_MAGIC_shared_scalar(n) |
56 | * MG_PTR = 0x810358 <<<< pointer to the shared SV |
57 | * |
58 | * ----------------- |
59 | * |
60 | * Shared aggregate (my @a : shared; my %h : shared): |
61 | * |
62 | * SV = PVAV(0x7175d0) at 0x738708 |
63 | * FLAGS = (PADMY,RMG) |
64 | * MAGIC = 0x824e48 |
65 | * MG_TYPE = PERL_MAGIC_tied(P) |
66 | * MG_OBJ = 0x7136e0 <<<< ref to the tied object |
67 | * SV = RV(0x7136f0) at 0x7136e0 |
68 | * RV = 0x738640 |
69 | * SV = PVMG(0x7ba238) at 0x738640 <<<< the tied object |
70 | * FLAGS = (OBJECT,IOK,pIOK) |
71 | * IV = 8455000 <<<< pointer to the shared AV |
72 | * STASH = 0x80abf0 "threads::shared::tie" |
73 | * MG_PTR = 0x810358 "" <<<< another pointer to the shared AV |
74 | * ARRAY = 0x0 |
75 | * |
76 | * ----------------- |
77 | * |
78 | * Aggregate element (my @a : shared; $a[0]) |
79 | * |
80 | * SV = PVLV(0x77f628) at 0x713550 |
81 | * FLAGS = (GMG,SMG,RMG,pIOK) |
82 | * MAGIC = 0x72bd58 |
83 | * MG_TYPE = PERL_MAGIC_shared_scalar(n) |
84 | * MG_PTR = 0x8103c0 "" <<<< pointer to the shared element |
85 | * MAGIC = 0x72bd18 |
86 | * MG_TYPE = PERL_MAGIC_tiedelem(p) |
87 | * MG_OBJ = 0x7136e0 <<<< ref to the tied object |
88 | * SV = RV(0x7136f0) at 0x7136e0 |
89 | * RV = 0x738660 |
90 | * SV = PVMG(0x7ba278) at 0x738660 <<<< the tied object |
91 | * FLAGS = (OBJECT,IOK,pIOK) |
92 | * IV = 8455064 <<<< pointer to the shared AV |
93 | * STASH = 0x80ac30 "threads::shared::tie" |
94 | * TYPE = t |
95 | * |
96 | * Note that PERL_MAGIC_tiedelem(p) magic doesn't have a pointer to a |
97 | * shared SV in mg_ptr; instead this is used to store the hash key, |
98 | * if any, like normal tied elements. Note also that element SVs may have |
99 | * pointers to both the shared aggregate and the shared element |
100 | * |
101 | * |
102 | * Userland locks: |
103 | * |
104 | * if a shared variable is used as a perl-level lock or condition |
105 | * variable, then PERL_MAGIC_ext magic is attached to the associated |
106 | * *shared* SV, whose mg_ptr field points to a malloced structure |
107 | * containing the necessary mutexes and condition variables. |
108 | * |
109 | * Nomenclature: |
110 | * |
111 | * In this file, any variable name prefixed with 's', eg ssv, stmp or sobj, |
112 | * usually represents a shared SV which correspondis to a private SV named |
113 | * without the prefix, eg sv, tmp or obj. |
114 | */ |
115 | |
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116 | #define PERL_NO_GET_CONTEXT |
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117 | #include "EXTERN.h" |
118 | #include "perl.h" |
119 | #include "XSUB.h" |
120 | |
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121 | #ifdef USE_ITHREADS |
122 | |
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123 | /* |
124 | * The shared things need an intepreter to live in ... |
125 | */ |
126 | PerlInterpreter *PL_sharedsv_space; /* The shared sv space */ |
127 | /* To access shared space we fake aTHX in this scope and thread's context */ |
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128 | |
129 | /* bug #24255: we include ENTER+SAVETMPS/FREETMPS+LEAVE with |
130 | * SHARED_CONTEXT/CALLER_CONTEXT macros, so that any mortals etc created |
1011f542 |
131 | * while in the shared interpreter context don't languish */ |
057e91b3 |
132 | |
133 | #define SHARED_CONTEXT \ |
134 | STMT_START { \ |
135 | PERL_SET_CONTEXT((aTHX = PL_sharedsv_space)); \ |
136 | ENTER; \ |
137 | SAVETMPS; \ |
138 | } STMT_END |
21312124 |
139 | |
140 | /* So we need a way to switch back to the caller's context... */ |
141 | /* So we declare _another_ copy of the aTHX variable ... */ |
142 | #define dTHXc PerlInterpreter *caller_perl = aTHX |
057e91b3 |
143 | |
21312124 |
144 | /* and use it to switch back */ |
057e91b3 |
145 | #define CALLER_CONTEXT \ |
146 | STMT_START { \ |
147 | FREETMPS; \ |
148 | LEAVE; \ |
149 | PERL_SET_CONTEXT((aTHX = caller_perl)); \ |
150 | } STMT_END |
21312124 |
151 | |
152 | /* |
153 | * Only one thread at a time is allowed to mess with shared space. |
154 | */ |
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155 | |
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156 | typedef struct |
157 | { |
158 | perl_mutex mutex; |
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159 | PerlInterpreter *owner; |
160 | I32 locks; |
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161 | perl_cond cond; |
162 | #ifdef DEBUG_LOCKS |
163 | char * file; |
164 | int line; |
165 | #endif |
6d56dc1c |
166 | } recursive_lock_t; |
167 | |
168 | recursive_lock_t PL_sharedsv_lock; /* Mutex protecting the shared sv space */ |
169 | |
170 | void |
171 | recursive_lock_init(pTHX_ recursive_lock_t *lock) |
172 | { |
173 | Zero(lock,1,recursive_lock_t); |
174 | MUTEX_INIT(&lock->mutex); |
175 | COND_INIT(&lock->cond); |
176 | } |
177 | |
a39edb3a |
178 | void |
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179 | recursive_lock_destroy(pTHX_ recursive_lock_t *lock) |
180 | { |
181 | MUTEX_DESTROY(&lock->mutex); |
182 | COND_DESTROY(&lock->cond); |
183 | } |
184 | |
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185 | void |
186 | recursive_lock_release(pTHX_ recursive_lock_t *lock) |
187 | { |
188 | MUTEX_LOCK(&lock->mutex); |
189 | if (lock->owner != aTHX) { |
190 | MUTEX_UNLOCK(&lock->mutex); |
191 | } |
192 | else { |
193 | if (--lock->locks == 0) { |
194 | lock->owner = NULL; |
195 | COND_SIGNAL(&lock->cond); |
196 | } |
197 | } |
198 | MUTEX_UNLOCK(&lock->mutex); |
199 | } |
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200 | |
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201 | void |
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202 | recursive_lock_acquire(pTHX_ recursive_lock_t *lock,char *file,int line) |
6d56dc1c |
203 | { |
204 | assert(aTHX); |
205 | MUTEX_LOCK(&lock->mutex); |
206 | if (lock->owner == aTHX) { |
207 | lock->locks++; |
208 | } |
209 | else { |
6b85e4fe |
210 | while (lock->owner) { |
211 | #ifdef DEBUG_LOCKS |
212 | Perl_warn(aTHX_ " %p waiting - owned by %p %s:%d\n", |
213 | aTHX, lock->owner, lock->file, lock->line); |
214 | #endif |
6d56dc1c |
215 | COND_WAIT(&lock->cond,&lock->mutex); |
6b85e4fe |
216 | } |
6d56dc1c |
217 | lock->locks = 1; |
218 | lock->owner = aTHX; |
6b85e4fe |
219 | #ifdef DEBUG_LOCKS |
220 | lock->file = file; |
221 | lock->line = line; |
222 | #endif |
6d56dc1c |
223 | } |
224 | MUTEX_UNLOCK(&lock->mutex); |
6b85e4fe |
225 | SAVEDESTRUCTOR_X(recursive_lock_release,lock); |
6d56dc1c |
226 | } |
227 | |
228 | #define ENTER_LOCK STMT_START { \ |
229 | ENTER; \ |
6b85e4fe |
230 | recursive_lock_acquire(aTHX_ &PL_sharedsv_lock, __FILE__, __LINE__); \ |
a446a88f |
231 | } STMT_END |
21312124 |
232 | |
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233 | /* the unlocking is done automatically at scope exit */ |
6d56dc1c |
234 | #define LEAVE_LOCK LEAVE |
235 | |
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236 | |
237 | /* A common idiom is to acquire access and switch in ... */ |
238 | #define SHARED_EDIT STMT_START { \ |
6d56dc1c |
239 | ENTER_LOCK; \ |
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240 | SHARED_CONTEXT; \ |
241 | } STMT_END |
242 | |
243 | /* then switch out and release access. */ |
244 | #define SHARED_RELEASE STMT_START { \ |
245 | CALLER_CONTEXT; \ |
6d56dc1c |
246 | LEAVE_LOCK; \ |
21312124 |
247 | } STMT_END |
85e0a142 |
248 | |
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249 | |
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250 | /* user-level locks: |
251 | This structure is attached (using ext magic) to any shared SV that |
252 | is used by user-level locking or condition code |
21312124 |
253 | */ |
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254 | |
255 | typedef struct { |
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256 | recursive_lock_t lock; /* for user-levl locks */ |
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257 | perl_cond user_cond; /* For user-level conditions */ |
29ecdb6f |
258 | } user_lock; |
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259 | |
29ecdb6f |
260 | /* magic used for attaching user_lock structs to shared SVs |
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261 | |
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262 | The vtable used has just one entry - when the SV goes away |
263 | we free the memory for the above. |
21312124 |
264 | */ |
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265 | |
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266 | int |
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267 | sharedsv_userlock_free(pTHX_ SV *sv, MAGIC *mg) |
21312124 |
268 | { |
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269 | user_lock *ul = (user_lock *) mg->mg_ptr; |
270 | assert(aTHX == PL_sharedsv_space); |
271 | if (ul) { |
272 | recursive_lock_destroy(aTHX_ &ul->lock); |
273 | COND_DESTROY(&ul->user_cond); |
274 | PerlMemShared_free(ul); |
21312124 |
275 | mg->mg_ptr = NULL; |
276 | } |
277 | return 0; |
278 | } |
279 | |
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280 | MGVTBL sharedsv_uesrlock_vtbl = { |
21312124 |
281 | 0, /* get */ |
282 | 0, /* set */ |
283 | 0, /* len */ |
284 | 0, /* clear */ |
29ecdb6f |
285 | sharedsv_userlock_free, /* free */ |
21312124 |
286 | 0, /* copy */ |
287 | 0, /* dup */ |
a5063e7c |
288 | 0 /* local */ |
21312124 |
289 | }; |
290 | |
291 | /* Access to shared things is heavily based on MAGIC - in mg.h/mg.c/sv.c sense */ |
292 | |
293 | /* In any thread that has access to a shared thing there is a "proxy" |
294 | for it in its own space which has 'MAGIC' associated which accesses |
295 | the shared thing. |
296 | */ |
297 | |
298 | MGVTBL sharedsv_scalar_vtbl; /* scalars have this vtable */ |
299 | MGVTBL sharedsv_array_vtbl; /* hashes and arrays have this - like 'tie' */ |
300 | MGVTBL sharedsv_elem_vtbl; /* elements of hashes and arrays have this |
29ecdb6f |
301 | _AS WELL AS_ the scalar magic: |
302 | The sharedsv_elem_vtbl associates the element with the array/hash and |
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303 | the sharedsv_scalar_vtbl associates it with the value |
304 | */ |
305 | |
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306 | |
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307 | /* get shared aggregate SV pointed to by threads::shared::tie magic object */ |
308 | |
309 | STATIC SV * |
310 | S_sharedsv_from_obj(pTHX_ SV *sv) |
6b85e4fe |
311 | { |
29ecdb6f |
312 | return SvROK(sv) ? INT2PTR(SV *, SvIV(SvRV(sv))) : NULL; |
313 | } |
314 | |
315 | |
316 | /* Return the user_lock structure (if any) associated with a shared SV. |
317 | * If create is true, create one if it doesn't exist */ |
318 | |
319 | STATIC user_lock * |
320 | S_get_userlock(pTHX_ SV* ssv, bool create) |
321 | { |
322 | MAGIC *mg; |
323 | user_lock *ul = NULL; |
324 | |
325 | assert(ssv); |
326 | /* XXX redsign the storage of user locks so we dont need a global |
327 | * lock to access them ???? DAPM */ |
328 | ENTER_LOCK; |
329 | mg = mg_find(ssv, PERL_MAGIC_ext); |
330 | if (mg) |
331 | ul = (user_lock*)(mg->mg_ptr); |
332 | else if (create) { |
333 | dTHXc; |
334 | SHARED_CONTEXT; |
335 | ul = (user_lock *) PerlMemShared_malloc(sizeof(user_lock)); |
336 | Zero(ul, 1, user_lock); |
337 | /* attach to shared SV using ext magic */ |
338 | sv_magicext(ssv, NULL, PERL_MAGIC_ext, &sharedsv_uesrlock_vtbl, |
339 | (char *)ul, 0); |
340 | recursive_lock_init(aTHX_ &ul->lock); |
341 | COND_INIT(&ul->user_cond); |
342 | CALLER_CONTEXT; |
343 | } |
344 | LEAVE_LOCK; |
345 | return ul; |
6b85e4fe |
346 | } |
347 | |
29ecdb6f |
348 | |
21312124 |
349 | =for apidoc sharedsv_find |
350 | |
6b85e4fe |
351 | Given a private side SV tries to find if the SV has a shared backend, |
21312124 |
352 | by looking for the magic. |
353 | |
354 | =cut |
355 | |
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356 | SV * |
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357 | Perl_sharedsv_find(pTHX_ SV *sv) |
358 | { |
359 | MAGIC *mg; |
a446a88f |
360 | if (SvTYPE(sv) >= SVt_PVMG) { |
361 | switch(SvTYPE(sv)) { |
362 | case SVt_PVAV: |
363 | case SVt_PVHV: |
364 | if ((mg = mg_find(sv, PERL_MAGIC_tied)) |
365 | && mg->mg_virtual == &sharedsv_array_vtbl) { |
29ecdb6f |
366 | return (SV *) mg->mg_ptr; |
21312124 |
367 | } |
368 | break; |
a446a88f |
369 | default: |
6b85e4fe |
370 | /* This should work for elements as well as they |
371 | * have scalar magic as well as their element magic |
372 | */ |
a446a88f |
373 | if ((mg = mg_find(sv, PERL_MAGIC_shared_scalar)) |
374 | && mg->mg_virtual == &sharedsv_scalar_vtbl) { |
29ecdb6f |
375 | return (SV *) mg->mg_ptr; |
6b85e4fe |
376 | } |
a446a88f |
377 | break; |
21312124 |
378 | } |
379 | } |
6b85e4fe |
380 | /* Just for tidyness of API also handle tie objects */ |
381 | if (SvROK(sv) && sv_derived_from(sv, "threads::shared::tie")) { |
29ecdb6f |
382 | return S_sharedsv_from_obj(aTHX_ sv); |
6b85e4fe |
383 | } |
21312124 |
384 | return NULL; |
385 | } |
68795e93 |
386 | |
68795e93 |
387 | |
29ecdb6f |
388 | /* associate a private SV with a shared SV by pointing the appropriate |
389 | * magics at it. Assumes lock is held */ |
390 | |
391 | void |
392 | Perl_sharedsv_associate(pTHX_ SV *sv, SV *ssv) |
21312124 |
393 | { |
21312124 |
394 | dTHXc; |
a446a88f |
395 | MAGIC *mg = 0; |
a446a88f |
396 | |
29ecdb6f |
397 | /* If we are asked for any private ops we need a thread */ |
a446a88f |
398 | assert ( aTHX != PL_sharedsv_space ); |
399 | |
400 | /* To avoid need for recursive locks require caller to hold lock */ |
6d56dc1c |
401 | assert ( PL_sharedsv_lock.owner == aTHX ); |
6b85e4fe |
402 | |
29ecdb6f |
403 | switch(SvTYPE(sv)) { |
404 | case SVt_PVAV: |
405 | case SVt_PVHV: |
406 | if (!(mg = mg_find(sv, PERL_MAGIC_tied)) |
407 | || mg->mg_virtual != &sharedsv_array_vtbl |
408 | || (SV*) mg->mg_ptr != ssv) |
409 | { |
410 | SV *obj = newSV(0); |
411 | sv_setref_iv(obj, "threads::shared::tie",PTR2IV(ssv)); |
412 | if (mg) { |
413 | sv_unmagic(sv, PERL_MAGIC_tied); |
414 | } |
415 | mg = sv_magicext(sv, obj, PERL_MAGIC_tied, &sharedsv_array_vtbl, |
416 | (char *) ssv, 0); |
417 | mg->mg_flags |= (MGf_COPY|MGf_DUP); |
418 | SvREFCNT_inc(ssv); |
419 | SvREFCNT_dec(obj); |
29ecdb6f |
420 | } |
421 | break; |
68795e93 |
422 | |
29ecdb6f |
423 | default: |
424 | if ((SvTYPE(sv) < SVt_PVMG) |
425 | || !(mg = mg_find(sv, PERL_MAGIC_shared_scalar)) |
426 | || mg->mg_virtual != &sharedsv_scalar_vtbl |
427 | || (SV*) mg->mg_ptr != ssv) |
428 | { |
429 | if (mg) { |
430 | sv_unmagic(sv, PERL_MAGIC_shared_scalar); |
431 | } |
432 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, |
433 | &sharedsv_scalar_vtbl, (char *)ssv, 0); |
60c5c75c |
434 | mg->mg_flags |= (MGf_DUP|MGf_LOCAL); |
29ecdb6f |
435 | SvREFCNT_inc(ssv); |
21312124 |
436 | } |
29ecdb6f |
437 | break; |
21312124 |
438 | } |
29ecdb6f |
439 | assert ( Perl_sharedsv_find(aTHX_ sv) == ssv ); |
440 | } |
6b85e4fe |
441 | |
6b85e4fe |
442 | |
29ecdb6f |
443 | /* Given a private SV, create and return an associated shared SV. |
444 | * Assumes lock is held */ |
68795e93 |
445 | |
29ecdb6f |
446 | STATIC SV * |
447 | S_sharedsv_new_shared(pTHX_ SV *sv) |
448 | { |
449 | dTHXc; |
450 | SV *ssv; |
6b85e4fe |
451 | |
29ecdb6f |
452 | assert(PL_sharedsv_lock.owner == aTHX); |
453 | assert(aTHX != PL_sharedsv_space); |
68795e93 |
454 | |
29ecdb6f |
455 | SHARED_CONTEXT; |
456 | ssv = newSV(0); |
457 | SvREFCNT(ssv) = 0; /* will be upped to 1 by Perl_sharedsv_associate */ |
458 | sv_upgrade(ssv, SvTYPE(sv)); |
459 | CALLER_CONTEXT; |
460 | Perl_sharedsv_associate(aTHX_ sv, ssv); |
461 | return ssv; |
462 | } |
21312124 |
463 | |
21312124 |
464 | |
29ecdb6f |
465 | /* Given a shared SV, create and return an associated private SV. |
466 | * Assumes lock is held */ |
467 | |
468 | STATIC SV * |
469 | S_sharedsv_new_private(pTHX_ SV *ssv) |
470 | { |
471 | SV *sv; |
472 | |
473 | assert(PL_sharedsv_lock.owner == aTHX); |
474 | assert(aTHX != PL_sharedsv_space); |
475 | |
476 | sv = newSV(0); |
477 | sv_upgrade(sv, SvTYPE(ssv)); |
478 | Perl_sharedsv_associate(aTHX_ sv, ssv); |
479 | return sv; |
21312124 |
480 | } |
68795e93 |
481 | |
29ecdb6f |
482 | |
483 | /* a threadsafe version of SvREFCNT_dec(ssv) */ |
484 | |
485 | STATIC void |
486 | S_sharedsv_dec(pTHX_ SV* ssv) |
68795e93 |
487 | { |
29ecdb6f |
488 | if (!ssv) |
489 | return; |
490 | ENTER_LOCK; |
491 | if (SvREFCNT(ssv) > 1) { |
492 | /* no side effects, so can do it lightweight */ |
493 | SvREFCNT_dec(ssv); |
494 | } |
495 | else { |
21312124 |
496 | dTHXc; |
29ecdb6f |
497 | SHARED_CONTEXT; |
498 | SvREFCNT_dec(ssv); |
499 | CALLER_CONTEXT; |
21312124 |
500 | } |
29ecdb6f |
501 | LEAVE_LOCK; |
68795e93 |
502 | } |
503 | |
29ecdb6f |
504 | /* implements Perl-level share() and :shared */ |
505 | |
21312124 |
506 | void |
507 | Perl_sharedsv_share(pTHX_ SV *sv) |
508 | { |
509 | switch(SvTYPE(sv)) { |
510 | case SVt_PVGV: |
511 | Perl_croak(aTHX_ "Cannot share globs yet"); |
512 | break; |
513 | |
514 | case SVt_PVCV: |
515 | Perl_croak(aTHX_ "Cannot share subs yet"); |
516 | break; |
85e0a142 |
517 | |
21312124 |
518 | default: |
6d56dc1c |
519 | ENTER_LOCK; |
29ecdb6f |
520 | (void) S_sharedsv_new_shared(aTHX_ sv); |
6d56dc1c |
521 | LEAVE_LOCK; |
a446a88f |
522 | SvSETMAGIC(sv); |
523 | break; |
21312124 |
524 | } |
525 | } |
68795e93 |
526 | |
a0e036c1 |
527 | #if defined(WIN32) || defined(OS2) |
528 | # define ABS2RELMILLI(abs) \ |
529 | do { \ |
2666606c |
530 | abs -= (double)time(NULL); \ |
a0e036c1 |
531 | if (abs > 0) { abs *= 1000; } \ |
532 | else { abs = 0; } \ |
533 | } while (0) |
534 | #endif /* WIN32 || OS2 */ |
535 | |
29ecdb6f |
536 | /* do OS-specific condition timed wait */ |
537 | |
a0e036c1 |
538 | bool |
539 | Perl_sharedsv_cond_timedwait(perl_cond *cond, perl_mutex *mut, double abs) |
540 | { |
541 | #if defined(NETWARE) || defined(FAKE_THREADS) || defined(I_MACH_CTHREADS) |
542 | Perl_croak_nocontext("cond_timedwait not supported on this platform"); |
543 | #else |
544 | # ifdef WIN32 |
545 | int got_it = 0; |
546 | |
547 | ABS2RELMILLI(abs); |
548 | |
549 | cond->waiters++; |
550 | MUTEX_UNLOCK(mut); |
551 | /* See comments in win32/win32thread.h COND_WAIT vis-a-vis race */ |
028f8eaa |
552 | switch (WaitForSingleObject(cond->sem, (DWORD)abs)) { |
a0e036c1 |
553 | case WAIT_OBJECT_0: got_it = 1; break; |
554 | case WAIT_TIMEOUT: break; |
555 | default: |
556 | /* WAIT_FAILED? WAIT_ABANDONED? others? */ |
557 | Perl_croak_nocontext("panic: cond_timedwait (%ld)",GetLastError()); |
558 | break; |
559 | } |
560 | MUTEX_LOCK(mut); |
2666606c |
561 | cond->waiters--; |
a0e036c1 |
562 | return got_it; |
563 | # else |
564 | # ifdef OS2 |
565 | int rc, got_it = 0; |
566 | STRLEN n_a; |
567 | |
568 | ABS2RELMILLI(abs); |
569 | |
570 | if ((rc = DosResetEventSem(*cond,&n_a)) && (rc != ERROR_ALREADY_RESET)) |
571 | Perl_rc = rc, croak_with_os2error("panic: cond_timedwait-reset"); |
572 | MUTEX_UNLOCK(mut); |
573 | if (CheckOSError(DosWaitEventSem(*cond,abs)) |
574 | && (rc != ERROR_INTERRUPT)) |
575 | croak_with_os2error("panic: cond_timedwait"); |
576 | if (rc == ERROR_INTERRUPT) errno = EINTR; |
577 | MUTEX_LOCK(mut); |
578 | return got_it; |
579 | # else /* hope you're I_PTHREAD! */ |
580 | struct timespec ts; |
581 | int got_it = 0; |
582 | |
583 | ts.tv_sec = (long)abs; |
584 | abs -= (NV)ts.tv_sec; |
585 | ts.tv_nsec = (long)(abs * 1000000000.0); |
586 | |
587 | switch (pthread_cond_timedwait(cond, mut, &ts)) { |
588 | case 0: got_it = 1; break; |
589 | case ETIMEDOUT: break; |
cf0d1c66 |
590 | #ifdef OEMVS |
591 | case -1: |
592 | if (errno == ETIMEDOUT || errno == EAGAIN) |
593 | break; |
594 | #endif |
a0e036c1 |
595 | default: |
596 | Perl_croak_nocontext("panic: cond_timedwait"); |
597 | break; |
598 | } |
599 | return got_it; |
600 | # endif /* OS2 */ |
601 | # endif /* WIN32 */ |
602 | #endif /* NETWARE || FAKE_THREADS || I_MACH_CTHREADS */ |
603 | } |
604 | |
dad67c22 |
605 | |
606 | /* given a shared RV, copy it's value to a private RV, also coping the |
607 | * object status of the referent. |
608 | * If the private side is already an appropriate RV->SV combination, keep |
609 | * it if possible. |
610 | */ |
611 | |
612 | STATIC void |
613 | S_get_RV(pTHX_ SV *sv, SV *ssv) { |
614 | SV *sobj = SvRV(ssv); |
615 | SV *obj; |
616 | if ( ! ( SvROK(sv) |
617 | && ((obj = SvRV(sv))) |
618 | && (Perl_sharedsv_find(aTHX_ obj) == sobj) |
619 | && (SvTYPE(obj) == SvTYPE(sobj)) |
620 | ) |
621 | ) |
622 | { |
623 | /* can't reuse obj */ |
624 | if (SvROK(sv)) { |
625 | SvREFCNT_dec(SvRV(sv)); |
626 | } |
627 | else { |
628 | assert(SvTYPE(sv) >= SVt_RV); |
629 | sv_setsv_nomg(sv, &PL_sv_undef); |
630 | SvROK_on(sv); |
631 | } |
632 | obj = S_sharedsv_new_private(aTHX_ SvRV(ssv)); |
633 | SvRV_set(sv, obj); |
634 | } |
635 | |
636 | if (SvOBJECT(obj)) { |
637 | /* remove any old blessing */ |
638 | SvREFCNT_dec(SvSTASH(obj)); |
639 | SvOBJECT_off(obj); |
640 | } |
641 | if (SvOBJECT(sobj)) { |
642 | /* add any new old blessing */ |
643 | STRLEN len; |
644 | char* stash_ptr = SvPV((SV*) SvSTASH(sobj), len); |
645 | HV* stash = gv_stashpvn(stash_ptr, len, TRUE); |
646 | SvOBJECT_on(obj); |
647 | SvSTASH_set(obj, (HV*)SvREFCNT_inc(stash)); |
648 | } |
649 | } |
650 | |
651 | |
29ecdb6f |
652 | /* ------------ PERL_MAGIC_shared_scalar(n) functions -------------- */ |
653 | |
654 | /* get magic for PERL_MAGIC_shared_scalar(n) */ |
68795e93 |
655 | |
21312124 |
656 | int |
657 | sharedsv_scalar_mg_get(pTHX_ SV *sv, MAGIC *mg) |
68795e93 |
658 | { |
29ecdb6f |
659 | SV *ssv = (SV *) mg->mg_ptr; |
660 | assert(ssv); |
21312124 |
661 | |
6d56dc1c |
662 | ENTER_LOCK; |
29ecdb6f |
663 | if (SvROK(ssv)) { |
dad67c22 |
664 | S_get_RV(aTHX_ sv, ssv); |
29ecdb6f |
665 | } |
666 | else { |
667 | sv_setsv_nomg(sv, ssv); |
21312124 |
668 | } |
6d56dc1c |
669 | LEAVE_LOCK; |
21312124 |
670 | return 0; |
671 | } |
672 | |
29ecdb6f |
673 | /* copy the contents of a private SV to a shared SV: |
674 | * used by various mg_set()-type functions. |
675 | * Assumes lock is held */ |
676 | |
6b85e4fe |
677 | void |
29ecdb6f |
678 | sharedsv_scalar_store(pTHX_ SV *sv, SV *ssv) |
21312124 |
679 | { |
680 | dTHXc; |
21312124 |
681 | bool allowed = TRUE; |
29ecdb6f |
682 | |
683 | assert(PL_sharedsv_lock.owner == aTHX); |
21312124 |
684 | if (SvROK(sv)) { |
29ecdb6f |
685 | SV *obj = SvRV(sv); |
686 | SV *sobj = Perl_sharedsv_find(aTHX_ obj); |
687 | if (sobj) { |
a446a88f |
688 | SHARED_CONTEXT; |
29ecdb6f |
689 | SvUPGRADE(ssv, SVt_RV); |
690 | sv_setsv_nomg(ssv, &PL_sv_undef); |
691 | |
692 | SvRV_set(ssv, SvREFCNT_inc(sobj)); |
693 | SvROK_on(ssv); |
694 | if(SvOBJECT(obj)) { |
695 | SV* fake_stash = newSVpv(HvNAME_get(SvSTASH(obj)),0); |
696 | SvOBJECT_on(sobj); |
697 | SvSTASH_set(sobj, (HV*)fake_stash); |
5c360ac5 |
698 | } |
a446a88f |
699 | CALLER_CONTEXT; |
21312124 |
700 | } |
701 | else { |
702 | allowed = FALSE; |
703 | } |
704 | } |
705 | else { |
5c360ac5 |
706 | SvTEMP_off(sv); |
a446a88f |
707 | SHARED_CONTEXT; |
29ecdb6f |
708 | sv_setsv_nomg(ssv, sv); |
5c360ac5 |
709 | if(SvOBJECT(sv)) { |
bfcb3514 |
710 | SV* fake_stash = newSVpv(HvNAME_get(SvSTASH(sv)),0); |
29ecdb6f |
711 | SvOBJECT_on(ssv); |
712 | SvSTASH_set(ssv, (HV*)fake_stash); |
5c360ac5 |
713 | } |
a446a88f |
714 | CALLER_CONTEXT; |
21312124 |
715 | } |
21312124 |
716 | if (!allowed) { |
717 | Perl_croak(aTHX_ "Invalid value for shared scalar"); |
718 | } |
6b85e4fe |
719 | } |
720 | |
29ecdb6f |
721 | /* set magic for PERL_MAGIC_shared_scalar(n) */ |
722 | |
6b85e4fe |
723 | int |
724 | sharedsv_scalar_mg_set(pTHX_ SV *sv, MAGIC *mg) |
725 | { |
29ecdb6f |
726 | SV *ssv = (SV*)(mg->mg_ptr); |
727 | assert(ssv); |
6b85e4fe |
728 | ENTER_LOCK; |
29ecdb6f |
729 | if (SvTYPE(ssv) < SvTYPE(sv)) { |
730 | dTHXc; |
731 | SHARED_CONTEXT; |
732 | sv_upgrade(ssv, SvTYPE(sv)); |
733 | CALLER_CONTEXT; |
734 | } |
735 | sharedsv_scalar_store(aTHX_ sv, ssv); |
6b85e4fe |
736 | LEAVE_LOCK; |
21312124 |
737 | return 0; |
68795e93 |
738 | } |
739 | |
29ecdb6f |
740 | /* free magic for PERL_MAGIC_shared_scalar(n) */ |
a446a88f |
741 | |
742 | int |
29ecdb6f |
743 | sharedsv_scalar_mg_free(pTHX_ SV *sv, MAGIC *mg) |
a446a88f |
744 | { |
29ecdb6f |
745 | S_sharedsv_dec(aTHX_ (SV*)mg->mg_ptr); |
21312124 |
746 | return 0; |
747 | } |
68795e93 |
748 | |
749 | /* |
29ecdb6f |
750 | * Called during cloning of PERL_MAGIC_shared_scalar(n) magic in new thread |
21312124 |
751 | */ |
752 | int |
753 | sharedsv_scalar_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
754 | { |
29ecdb6f |
755 | SvREFCNT_inc(mg->mg_ptr); |
21312124 |
756 | return 0; |
757 | } |
68795e93 |
758 | |
a5063e7c |
759 | /* |
760 | * Called during local $shared |
761 | */ |
762 | int |
763 | sharedsv_scalar_mg_local(pTHX_ SV* nsv, MAGIC *mg) |
764 | { |
765 | MAGIC *nmg; |
29ecdb6f |
766 | SV *ssv = (SV *) mg->mg_ptr; |
767 | if (ssv) { |
a5063e7c |
768 | ENTER_LOCK; |
29ecdb6f |
769 | SvREFCNT_inc(ssv); |
a5063e7c |
770 | LEAVE_LOCK; |
771 | } |
772 | nmg = sv_magicext(nsv, mg->mg_obj, mg->mg_type, mg->mg_virtual, |
773 | mg->mg_ptr, mg->mg_len); |
774 | nmg->mg_flags = mg->mg_flags; |
775 | nmg->mg_private = mg->mg_private; |
776 | |
777 | return 0; |
778 | } |
779 | |
21312124 |
780 | MGVTBL sharedsv_scalar_vtbl = { |
781 | sharedsv_scalar_mg_get, /* get */ |
782 | sharedsv_scalar_mg_set, /* set */ |
783 | 0, /* len */ |
29ecdb6f |
784 | 0, /* clear */ |
21312124 |
785 | sharedsv_scalar_mg_free, /* free */ |
786 | 0, /* copy */ |
a5063e7c |
787 | sharedsv_scalar_mg_dup, /* dup */ |
788 | sharedsv_scalar_mg_local /* local */ |
21312124 |
789 | }; |
68795e93 |
790 | |
29ecdb6f |
791 | /* ------------ PERL_MAGIC_tiedelem(p) functions -------------- */ |
792 | |
793 | /* get magic for PERL_MAGIC_tiedelem(p) */ |
794 | |
21312124 |
795 | int |
796 | sharedsv_elem_mg_FETCH(pTHX_ SV *sv, MAGIC *mg) |
68795e93 |
797 | { |
21312124 |
798 | dTHXc; |
29ecdb6f |
799 | SV *saggregate = S_sharedsv_from_obj(aTHX_ mg->mg_obj); |
21312124 |
800 | SV** svp; |
801 | |
6b85e4fe |
802 | ENTER_LOCK; |
29ecdb6f |
803 | if (SvTYPE(saggregate) == SVt_PVAV) { |
a446a88f |
804 | assert ( mg->mg_ptr == 0 ); |
6b85e4fe |
805 | SHARED_CONTEXT; |
29ecdb6f |
806 | svp = av_fetch((AV*) saggregate, mg->mg_len, 0); |
21312124 |
807 | } |
808 | else { |
6b85e4fe |
809 | char *key = mg->mg_ptr; |
810 | STRLEN len = mg->mg_len; |
a446a88f |
811 | assert ( mg->mg_ptr != 0 ); |
6b85e4fe |
812 | if (mg->mg_len == HEf_SVKEY) { |
813 | key = SvPV((SV *) mg->mg_ptr, len); |
814 | } |
815 | SHARED_CONTEXT; |
29ecdb6f |
816 | svp = hv_fetch((HV*) saggregate, key, len, 0); |
21312124 |
817 | } |
6b85e4fe |
818 | CALLER_CONTEXT; |
21312124 |
819 | if (svp) { |
6b85e4fe |
820 | /* Exists in the array */ |
abdac9fa |
821 | if (SvROK(*svp)) { |
dad67c22 |
822 | S_get_RV(aTHX_ sv, *svp); |
abdac9fa |
823 | } |
824 | else { |
29ecdb6f |
825 | /* XXX can this branch ever happen? DAPM */ |
826 | /* XXX assert("no such branch"); */ |
827 | Perl_sharedsv_associate(aTHX_ sv, *svp); |
abdac9fa |
828 | sv_setsv(sv, *svp); |
829 | } |
21312124 |
830 | } |
6b85e4fe |
831 | else { |
832 | /* Not in the array */ |
833 | sv_setsv(sv, &PL_sv_undef); |
68795e93 |
834 | } |
6b85e4fe |
835 | LEAVE_LOCK; |
21312124 |
836 | return 0; |
68795e93 |
837 | } |
838 | |
29ecdb6f |
839 | /* set magic for PERL_MAGIC_tiedelem(p) */ |
840 | |
21312124 |
841 | int |
842 | sharedsv_elem_mg_STORE(pTHX_ SV *sv, MAGIC *mg) |
843 | { |
844 | dTHXc; |
29ecdb6f |
845 | SV *saggregate = S_sharedsv_from_obj(aTHX_ mg->mg_obj); |
6b85e4fe |
846 | SV **svp; |
21312124 |
847 | /* Theory - SV itself is magically shared - and we have ordered the |
848 | magic such that by the time we get here it has been stored |
849 | to its shared counterpart |
850 | */ |
6d56dc1c |
851 | ENTER_LOCK; |
29ecdb6f |
852 | assert(saggregate); |
853 | if (SvTYPE(saggregate) == SVt_PVAV) { |
6b85e4fe |
854 | assert ( mg->mg_ptr == 0 ); |
855 | SHARED_CONTEXT; |
29ecdb6f |
856 | svp = av_fetch((AV*) saggregate, mg->mg_len, 1); |
21312124 |
857 | } |
858 | else { |
6b85e4fe |
859 | char *key = mg->mg_ptr; |
860 | STRLEN len = mg->mg_len; |
861 | assert ( mg->mg_ptr != 0 ); |
862 | if (mg->mg_len == HEf_SVKEY) |
863 | key = SvPV((SV *) mg->mg_ptr, len); |
864 | SHARED_CONTEXT; |
29ecdb6f |
865 | svp = hv_fetch((HV*) saggregate, key, len, 1); |
21312124 |
866 | } |
6b85e4fe |
867 | CALLER_CONTEXT; |
29ecdb6f |
868 | Perl_sharedsv_associate(aTHX_ sv, *svp); |
869 | sharedsv_scalar_store(aTHX_ sv, *svp); |
6b85e4fe |
870 | LEAVE_LOCK; |
21312124 |
871 | return 0; |
872 | } |
68795e93 |
873 | |
29ecdb6f |
874 | /* clear magic for PERL_MAGIC_tiedelem(p) */ |
875 | |
21312124 |
876 | int |
877 | sharedsv_elem_mg_DELETE(pTHX_ SV *sv, MAGIC *mg) |
68795e93 |
878 | { |
21312124 |
879 | dTHXc; |
057e91b3 |
880 | MAGIC *shmg; |
29ecdb6f |
881 | SV *saggregate = S_sharedsv_from_obj(aTHX_ mg->mg_obj); |
6b85e4fe |
882 | ENTER_LOCK; |
883 | sharedsv_elem_mg_FETCH(aTHX_ sv, mg); |
057e91b3 |
884 | if ((shmg = mg_find(sv, PERL_MAGIC_shared_scalar))) |
885 | sharedsv_scalar_mg_get(aTHX_ sv, shmg); |
29ecdb6f |
886 | if (SvTYPE(saggregate) == SVt_PVAV) { |
6b85e4fe |
887 | SHARED_CONTEXT; |
29ecdb6f |
888 | av_delete((AV*) saggregate, mg->mg_len, G_DISCARD); |
68795e93 |
889 | } |
21312124 |
890 | else { |
6b85e4fe |
891 | char *key = mg->mg_ptr; |
892 | STRLEN len = mg->mg_len; |
893 | assert ( mg->mg_ptr != 0 ); |
894 | if (mg->mg_len == HEf_SVKEY) |
895 | key = SvPV((SV *) mg->mg_ptr, len); |
896 | SHARED_CONTEXT; |
29ecdb6f |
897 | hv_delete((HV*) saggregate, key, len, G_DISCARD); |
21312124 |
898 | } |
6b85e4fe |
899 | CALLER_CONTEXT; |
900 | LEAVE_LOCK; |
21312124 |
901 | return 0; |
902 | } |
903 | |
29ecdb6f |
904 | /* Called during cloning of PERL_MAGIC_tiedelem(p) magic in new |
905 | * thread */ |
906 | |
21312124 |
907 | int |
908 | sharedsv_elem_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
909 | { |
29ecdb6f |
910 | SvREFCNT_inc(S_sharedsv_from_obj(aTHX_ mg->mg_obj)); |
911 | assert(mg->mg_flags & MGf_DUP); |
21312124 |
912 | return 0; |
913 | } |
914 | |
915 | MGVTBL sharedsv_elem_vtbl = { |
916 | sharedsv_elem_mg_FETCH, /* get */ |
917 | sharedsv_elem_mg_STORE, /* set */ |
918 | 0, /* len */ |
919 | sharedsv_elem_mg_DELETE, /* clear */ |
60c5c75c |
920 | 0, /* free */ |
21312124 |
921 | 0, /* copy */ |
a5063e7c |
922 | sharedsv_elem_mg_dup, /* dup */ |
923 | 0 /* local */ |
21312124 |
924 | }; |
925 | |
29ecdb6f |
926 | /* ------------ PERL_MAGIC_tied(P) functions -------------- */ |
927 | |
928 | /* len magic for PERL_MAGIC_tied(P) */ |
929 | |
21312124 |
930 | U32 |
931 | sharedsv_array_mg_FETCHSIZE(pTHX_ SV *sv, MAGIC *mg) |
932 | { |
933 | dTHXc; |
29ecdb6f |
934 | SV *ssv = (SV *) mg->mg_ptr; |
21312124 |
935 | U32 val; |
936 | SHARED_EDIT; |
29ecdb6f |
937 | if (SvTYPE(ssv) == SVt_PVAV) { |
938 | val = av_len((AV*) ssv); |
21312124 |
939 | } |
940 | else { |
941 | /* not actually defined by tie API but ... */ |
29ecdb6f |
942 | val = HvKEYS((HV*) ssv); |
21312124 |
943 | } |
944 | SHARED_RELEASE; |
945 | return val; |
946 | } |
947 | |
29ecdb6f |
948 | /* clear magic for PERL_MAGIC_tied(P) */ |
949 | |
21312124 |
950 | int |
951 | sharedsv_array_mg_CLEAR(pTHX_ SV *sv, MAGIC *mg) |
952 | { |
953 | dTHXc; |
29ecdb6f |
954 | SV *ssv = (SV *) mg->mg_ptr; |
21312124 |
955 | SHARED_EDIT; |
29ecdb6f |
956 | if (SvTYPE(ssv) == SVt_PVAV) { |
957 | av_clear((AV*) ssv); |
21312124 |
958 | } |
959 | else { |
29ecdb6f |
960 | hv_clear((HV*) ssv); |
21312124 |
961 | } |
962 | SHARED_RELEASE; |
963 | return 0; |
964 | } |
965 | |
29ecdb6f |
966 | /* free magic for PERL_MAGIC_tied(P) */ |
967 | |
21312124 |
968 | int |
969 | sharedsv_array_mg_free(pTHX_ SV *sv, MAGIC *mg) |
970 | { |
29ecdb6f |
971 | S_sharedsv_dec(aTHX_ (SV*)mg->mg_ptr); |
21312124 |
972 | return 0; |
68795e93 |
973 | } |
974 | |
975 | /* |
29ecdb6f |
976 | * copy magic for PERL_MAGIC_tied(P) |
21312124 |
977 | * This is called when perl is about to access an element of |
978 | * the array - |
979 | */ |
980 | int |
981 | sharedsv_array_mg_copy(pTHX_ SV *sv, MAGIC* mg, |
982 | SV *nsv, const char *name, int namlen) |
983 | { |
21312124 |
984 | MAGIC *nmg = sv_magicext(nsv,mg->mg_obj, |
985 | toLOWER(mg->mg_type),&sharedsv_elem_vtbl, |
986 | name, namlen); |
987 | nmg->mg_flags |= MGf_DUP; |
21312124 |
988 | return 1; |
989 | } |
990 | |
29ecdb6f |
991 | /* Called during cloning of PERL_MAGIC_tied(P) magic in new thread */ |
992 | |
21312124 |
993 | int |
994 | sharedsv_array_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
995 | { |
29ecdb6f |
996 | SvREFCNT_inc((SV*)mg->mg_ptr); |
997 | assert(mg->mg_flags & MGf_DUP); |
21312124 |
998 | return 0; |
999 | } |
1000 | |
1001 | MGVTBL sharedsv_array_vtbl = { |
1002 | 0, /* get */ |
1003 | 0, /* set */ |
1004 | sharedsv_array_mg_FETCHSIZE, /* len */ |
1005 | sharedsv_array_mg_CLEAR, /* clear */ |
1006 | sharedsv_array_mg_free, /* free */ |
1007 | sharedsv_array_mg_copy, /* copy */ |
a5063e7c |
1008 | sharedsv_array_mg_dup, /* dup */ |
1009 | 0 /* local */ |
21312124 |
1010 | }; |
1011 | |
1012 | =for apidoc sharedsv_unlock |
68795e93 |
1013 | |
1014 | Recursively unlocks a shared sv. |
1015 | |
21312124 |
1016 | =cut |
68795e93 |
1017 | |
1018 | void |
29ecdb6f |
1019 | Perl_sharedsv_unlock(pTHX_ SV *ssv) |
68795e93 |
1020 | { |
29ecdb6f |
1021 | user_lock *ul = S_get_userlock(aTHX_ ssv, 0); |
1022 | assert(ul); |
1023 | recursive_lock_release(aTHX_ &ul->lock); |
68795e93 |
1024 | } |
1025 | |
21312124 |
1026 | =for apidoc sharedsv_lock |
68795e93 |
1027 | |
21312124 |
1028 | Recursive locks on a sharedsv. |
1029 | Locks are dynamically scoped at the level of the first lock. |
68795e93 |
1030 | |
21312124 |
1031 | =cut |
68795e93 |
1032 | |
1033 | void |
29ecdb6f |
1034 | Perl_sharedsv_lock(pTHX_ SV *ssv) |
68795e93 |
1035 | { |
29ecdb6f |
1036 | user_lock *ul; |
21312124 |
1037 | if (!ssv) |
1038 | return; |
29ecdb6f |
1039 | ul = S_get_userlock(aTHX_ ssv, 1); |
1040 | recursive_lock_acquire(aTHX_ &ul->lock, __FILE__, __LINE__); |
68795e93 |
1041 | } |
1042 | |
afe38520 |
1043 | /* handles calls from lock() builtin via PL_lockhook */ |
1044 | |
21312124 |
1045 | void |
1046 | Perl_sharedsv_locksv(pTHX_ SV *sv) |
1047 | { |
29ecdb6f |
1048 | SV *ssv; |
afe38520 |
1049 | |
1050 | if(SvROK(sv)) |
1051 | sv = SvRV(sv); |
29ecdb6f |
1052 | ssv = Perl_sharedsv_find(aTHX_ sv); |
1053 | if(!ssv) |
afe38520 |
1054 | croak("lock can only be used on shared values"); |
29ecdb6f |
1055 | Perl_sharedsv_lock(aTHX_ ssv); |
b050c948 |
1056 | } |
1057 | |
21312124 |
1058 | =head1 Shared SV Functions |
b050c948 |
1059 | |
21312124 |
1060 | =for apidoc sharedsv_init |
b050c948 |
1061 | |
21312124 |
1062 | Saves a space for keeping SVs wider than an interpreter, |
b050c948 |
1063 | |
21312124 |
1064 | =cut |
1065 | |
1066 | void |
1067 | Perl_sharedsv_init(pTHX) |
1068 | { |
1069 | dTHXc; |
1070 | /* This pair leaves us in shared context ... */ |
1071 | PL_sharedsv_space = perl_alloc(); |
1072 | perl_construct(PL_sharedsv_space); |
1073 | CALLER_CONTEXT; |
6d56dc1c |
1074 | recursive_lock_init(aTHX_ &PL_sharedsv_lock); |
21312124 |
1075 | PL_lockhook = &Perl_sharedsv_locksv; |
1076 | PL_sharehook = &Perl_sharedsv_share; |
b050c948 |
1077 | } |
1078 | |
73e09c8f |
1079 | #endif /* USE_ITHREADS */ |
1080 | |
21312124 |
1081 | MODULE = threads::shared PACKAGE = threads::shared::tie |
b050c948 |
1082 | |
21312124 |
1083 | PROTOTYPES: DISABLE |
b050c948 |
1084 | |
73e09c8f |
1085 | #ifdef USE_ITHREADS |
6b85e4fe |
1086 | |
21312124 |
1087 | void |
29ecdb6f |
1088 | PUSH(SV *obj, ...) |
21312124 |
1089 | CODE: |
1090 | dTHXc; |
29ecdb6f |
1091 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1092 | int i; |
21312124 |
1093 | for(i = 1; i < items; i++) { |
1094 | SV* tmp = newSVsv(ST(i)); |
29ecdb6f |
1095 | SV *stmp; |
6d56dc1c |
1096 | ENTER_LOCK; |
29ecdb6f |
1097 | stmp = S_sharedsv_new_shared(aTHX_ tmp); |
1098 | sharedsv_scalar_store(aTHX_ tmp, stmp); |
21312124 |
1099 | SHARED_CONTEXT; |
29ecdb6f |
1100 | av_push((AV*) sobj, stmp); |
1101 | SvREFCNT_inc(stmp); |
a446a88f |
1102 | SHARED_RELEASE; |
21312124 |
1103 | SvREFCNT_dec(tmp); |
1104 | } |
b050c948 |
1105 | |
21312124 |
1106 | void |
29ecdb6f |
1107 | UNSHIFT(SV *obj, ...) |
21312124 |
1108 | CODE: |
1109 | dTHXc; |
29ecdb6f |
1110 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1111 | int i; |
6d56dc1c |
1112 | ENTER_LOCK; |
21312124 |
1113 | SHARED_CONTEXT; |
29ecdb6f |
1114 | av_unshift((AV*)sobj, items - 1); |
21312124 |
1115 | CALLER_CONTEXT; |
1116 | for(i = 1; i < items; i++) { |
29ecdb6f |
1117 | SV *tmp = newSVsv(ST(i)); |
1118 | SV *stmp = S_sharedsv_new_shared(aTHX_ tmp); |
1119 | sharedsv_scalar_store(aTHX_ tmp, stmp); |
21312124 |
1120 | SHARED_CONTEXT; |
29ecdb6f |
1121 | av_store((AV*) sobj, i - 1, stmp); |
1122 | SvREFCNT_inc(stmp); |
21312124 |
1123 | CALLER_CONTEXT; |
1124 | SvREFCNT_dec(tmp); |
1125 | } |
6d56dc1c |
1126 | LEAVE_LOCK; |
b050c948 |
1127 | |
21312124 |
1128 | void |
29ecdb6f |
1129 | POP(SV *obj) |
21312124 |
1130 | CODE: |
1131 | dTHXc; |
29ecdb6f |
1132 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
1133 | SV* ssv; |
6d56dc1c |
1134 | ENTER_LOCK; |
21312124 |
1135 | SHARED_CONTEXT; |
29ecdb6f |
1136 | ssv = av_pop((AV*)sobj); |
21312124 |
1137 | CALLER_CONTEXT; |
9b018978 |
1138 | ST(0) = sv_newmortal(); |
29ecdb6f |
1139 | Perl_sharedsv_associate(aTHX_ ST(0), ssv); |
1140 | SvREFCNT_dec(ssv); |
6d56dc1c |
1141 | LEAVE_LOCK; |
21312124 |
1142 | XSRETURN(1); |
b050c948 |
1143 | |
21312124 |
1144 | void |
29ecdb6f |
1145 | SHIFT(SV *obj) |
21312124 |
1146 | CODE: |
1147 | dTHXc; |
29ecdb6f |
1148 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
1149 | SV* ssv; |
6d56dc1c |
1150 | ENTER_LOCK; |
21312124 |
1151 | SHARED_CONTEXT; |
29ecdb6f |
1152 | ssv = av_shift((AV*)sobj); |
21312124 |
1153 | CALLER_CONTEXT; |
9b018978 |
1154 | ST(0) = sv_newmortal(); |
29ecdb6f |
1155 | Perl_sharedsv_associate(aTHX_ ST(0), ssv); |
1156 | SvREFCNT_dec(ssv); |
6d56dc1c |
1157 | LEAVE_LOCK; |
21312124 |
1158 | XSRETURN(1); |
b050c948 |
1159 | |
21312124 |
1160 | void |
29ecdb6f |
1161 | EXTEND(SV *obj, IV count) |
21312124 |
1162 | CODE: |
1163 | dTHXc; |
29ecdb6f |
1164 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1165 | SHARED_EDIT; |
29ecdb6f |
1166 | av_extend((AV*)sobj, count); |
21312124 |
1167 | SHARED_RELEASE; |
b050c948 |
1168 | |
21312124 |
1169 | void |
29ecdb6f |
1170 | STORESIZE(SV *obj,IV count) |
6b85e4fe |
1171 | CODE: |
1172 | dTHXc; |
29ecdb6f |
1173 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
6b85e4fe |
1174 | SHARED_EDIT; |
29ecdb6f |
1175 | av_fill((AV*) sobj, count); |
6b85e4fe |
1176 | SHARED_RELEASE; |
1177 | |
1178 | |
1179 | |
1180 | |
1181 | void |
29ecdb6f |
1182 | EXISTS(SV *obj, SV *index) |
21312124 |
1183 | CODE: |
1184 | dTHXc; |
29ecdb6f |
1185 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1186 | bool exists; |
29ecdb6f |
1187 | if (SvTYPE(sobj) == SVt_PVAV) { |
680c9d89 |
1188 | SHARED_EDIT; |
29ecdb6f |
1189 | exists = av_exists((AV*) sobj, SvIV(index)); |
21312124 |
1190 | } |
1191 | else { |
6b85e4fe |
1192 | STRLEN len; |
1193 | char *key = SvPV(index,len); |
680c9d89 |
1194 | SHARED_EDIT; |
29ecdb6f |
1195 | exists = hv_exists((HV*) sobj, key, len); |
21312124 |
1196 | } |
1197 | SHARED_RELEASE; |
1198 | ST(0) = (exists) ? &PL_sv_yes : &PL_sv_no; |
1199 | XSRETURN(1); |
b050c948 |
1200 | |
1201 | |
1202 | void |
29ecdb6f |
1203 | FIRSTKEY(SV *obj) |
21312124 |
1204 | CODE: |
1205 | dTHXc; |
29ecdb6f |
1206 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1207 | char* key = NULL; |
1208 | I32 len = 0; |
1209 | HE* entry; |
6d56dc1c |
1210 | ENTER_LOCK; |
21312124 |
1211 | SHARED_CONTEXT; |
29ecdb6f |
1212 | hv_iterinit((HV*) sobj); |
1213 | entry = hv_iternext((HV*) sobj); |
21312124 |
1214 | if (entry) { |
1215 | key = hv_iterkey(entry,&len); |
1216 | CALLER_CONTEXT; |
1217 | ST(0) = sv_2mortal(newSVpv(key, len)); |
1218 | } else { |
1219 | CALLER_CONTEXT; |
1220 | ST(0) = &PL_sv_undef; |
1221 | } |
6d56dc1c |
1222 | LEAVE_LOCK; |
21312124 |
1223 | XSRETURN(1); |
b050c948 |
1224 | |
866fba46 |
1225 | void |
29ecdb6f |
1226 | NEXTKEY(SV *obj, SV *oldkey) |
21312124 |
1227 | CODE: |
1228 | dTHXc; |
29ecdb6f |
1229 | SV *sobj = S_sharedsv_from_obj(aTHX_ obj); |
21312124 |
1230 | char* key = NULL; |
1231 | I32 len = 0; |
1232 | HE* entry; |
6d56dc1c |
1233 | ENTER_LOCK; |
21312124 |
1234 | SHARED_CONTEXT; |
29ecdb6f |
1235 | entry = hv_iternext((HV*) sobj); |
6b85e4fe |
1236 | if (entry) { |
21312124 |
1237 | key = hv_iterkey(entry,&len); |
1238 | CALLER_CONTEXT; |
1239 | ST(0) = sv_2mortal(newSVpv(key, len)); |
1240 | } else { |
1241 | CALLER_CONTEXT; |
1242 | ST(0) = &PL_sv_undef; |
1243 | } |
6d56dc1c |
1244 | LEAVE_LOCK; |
21312124 |
1245 | XSRETURN(1); |
1246 | |
1247 | MODULE = threads::shared PACKAGE = threads::shared |
1248 | |
1249 | PROTOTYPES: ENABLE |
866fba46 |
1250 | |
68795e93 |
1251 | void |
9c4972d9 |
1252 | _id(SV *ref) |
1253 | PROTOTYPE: \[$@%] |
1254 | CODE: |
29ecdb6f |
1255 | SV *ssv; |
afe38520 |
1256 | ref = SvRV(ref); |
9c4972d9 |
1257 | if(SvROK(ref)) |
1258 | ref = SvRV(ref); |
29ecdb6f |
1259 | if( (ssv = Perl_sharedsv_find(aTHX_ ref)) ){ |
1260 | ST(0) = sv_2mortal(newSViv(PTR2IV(ssv))); |
9c4972d9 |
1261 | XSRETURN(1); |
1262 | } |
1263 | XSRETURN_UNDEF; |
1264 | |
1265 | |
1266 | void |
6b85e4fe |
1267 | _refcnt(SV *ref) |
a446a88f |
1268 | PROTOTYPE: \[$@%] |
1269 | CODE: |
29ecdb6f |
1270 | SV *ssv; |
afe38520 |
1271 | ref = SvRV(ref); |
a446a88f |
1272 | if(SvROK(ref)) |
1273 | ref = SvRV(ref); |
29ecdb6f |
1274 | if( (ssv = Perl_sharedsv_find(aTHX_ ref)) ) { |
1275 | ST(0) = sv_2mortal(newSViv(SvREFCNT(ssv))); |
a446a88f |
1276 | XSRETURN(1); |
a446a88f |
1277 | } |
1278 | else { |
436c6dd3 |
1279 | Perl_warn(aTHX_ "%" SVf " is not shared",ST(0)); |
a446a88f |
1280 | } |
1281 | XSRETURN_UNDEF; |
1282 | |
caf25f3b |
1283 | SV* |
a446a88f |
1284 | share(SV *ref) |
1285 | PROTOTYPE: \[$@%] |
1286 | CODE: |
56fcff86 |
1287 | if(!SvROK(ref)) |
1288 | Perl_croak(aTHX_ "Argument to share needs to be passed as ref"); |
afe38520 |
1289 | ref = SvRV(ref); |
a446a88f |
1290 | if(SvROK(ref)) |
1291 | ref = SvRV(ref); |
38875929 |
1292 | Perl_sharedsv_share(aTHX_ ref); |
caf25f3b |
1293 | RETVAL = newRV(ref); |
1294 | OUTPUT: |
1295 | RETVAL |
a446a88f |
1296 | |
1297 | void |
21312124 |
1298 | lock_enabled(SV *ref) |
ce127893 |
1299 | PROTOTYPE: \[$@%] |
6f942b98 |
1300 | CODE: |
29ecdb6f |
1301 | SV *ssv; |
56fcff86 |
1302 | if(!SvROK(ref)) |
1303 | Perl_croak(aTHX_ "Argument to lock needs to be passed as ref"); |
afe38520 |
1304 | ref = SvRV(ref); |
6f942b98 |
1305 | if(SvROK(ref)) |
1306 | ref = SvRV(ref); |
29ecdb6f |
1307 | ssv = Perl_sharedsv_find(aTHX_ ref); |
1308 | if(!ssv) |
21312124 |
1309 | croak("lock can only be used on shared values"); |
29ecdb6f |
1310 | Perl_sharedsv_lock(aTHX_ ssv); |
6f942b98 |
1311 | |
1312 | void |
a0e036c1 |
1313 | cond_wait_enabled(SV *ref_cond, SV *ref_lock = 0) |
1314 | PROTOTYPE: \[$@%];\[$@%] |
1315 | PREINIT: |
29ecdb6f |
1316 | SV *ssv; |
a0e036c1 |
1317 | perl_cond* user_condition; |
6f942b98 |
1318 | int locks; |
a0e036c1 |
1319 | int same = 0; |
29ecdb6f |
1320 | user_lock *ul; |
a0e036c1 |
1321 | |
1322 | CODE: |
1323 | if (!ref_lock || ref_lock == ref_cond) same = 1; |
1324 | |
1325 | if(!SvROK(ref_cond)) |
56fcff86 |
1326 | Perl_croak(aTHX_ "Argument to cond_wait needs to be passed as ref"); |
a0e036c1 |
1327 | ref_cond = SvRV(ref_cond); |
1328 | if(SvROK(ref_cond)) |
1329 | ref_cond = SvRV(ref_cond); |
29ecdb6f |
1330 | ssv = Perl_sharedsv_find(aTHX_ ref_cond); |
1331 | if(!ssv) |
6f942b98 |
1332 | croak("cond_wait can only be used on shared values"); |
29ecdb6f |
1333 | ul = S_get_userlock(aTHX_ ssv, 1); |
a0e036c1 |
1334 | |
29ecdb6f |
1335 | user_condition = &ul->user_cond; |
a0e036c1 |
1336 | if (! same) { |
1337 | if (!SvROK(ref_lock)) |
1338 | Perl_croak(aTHX_ "cond_wait lock needs to be passed as ref"); |
1339 | ref_lock = SvRV(ref_lock); |
1340 | if (SvROK(ref_lock)) ref_lock = SvRV(ref_lock); |
29ecdb6f |
1341 | ssv = Perl_sharedsv_find(aTHX_ ref_lock); |
1342 | if (!ssv) |
a0e036c1 |
1343 | croak("cond_wait lock must be a shared value"); |
29ecdb6f |
1344 | ul = S_get_userlock(aTHX_ ssv, 1); |
a0e036c1 |
1345 | } |
29ecdb6f |
1346 | if(ul->lock.owner != aTHX) |
6f942b98 |
1347 | croak("You need a lock before you can cond_wait"); |
6d56dc1c |
1348 | /* Stealing the members of the lock object worries me - NI-S */ |
29ecdb6f |
1349 | MUTEX_LOCK(&ul->lock.mutex); |
1350 | ul->lock.owner = NULL; |
1351 | locks = ul->lock.locks; |
1352 | ul->lock.locks = 0; |
89661126 |
1353 | |
1354 | /* since we are releasing the lock here we need to tell other |
1355 | people that is ok to go ahead and use it */ |
29ecdb6f |
1356 | COND_SIGNAL(&ul->lock.cond); |
1357 | COND_WAIT(user_condition, &ul->lock.mutex); |
1358 | while(ul->lock.owner != NULL) { |
a0e036c1 |
1359 | /* OK -- must reacquire the lock */ |
29ecdb6f |
1360 | COND_WAIT(&ul->lock.cond, &ul->lock.mutex); |
a0e036c1 |
1361 | } |
29ecdb6f |
1362 | ul->lock.owner = aTHX; |
1363 | ul->lock.locks = locks; |
1364 | MUTEX_UNLOCK(&ul->lock.mutex); |
a0e036c1 |
1365 | |
1366 | int |
1367 | cond_timedwait_enabled(SV *ref_cond, double abs, SV *ref_lock = 0) |
1368 | PROTOTYPE: \[$@%]$;\[$@%] |
1369 | PREINIT: |
29ecdb6f |
1370 | SV *ssv; |
a0e036c1 |
1371 | perl_cond* user_condition; |
1372 | int locks; |
1373 | int same = 0; |
29ecdb6f |
1374 | user_lock *ul; |
a0e036c1 |
1375 | |
1376 | CODE: |
1377 | if (!ref_lock || ref_cond == ref_lock) same = 1; |
1378 | |
1379 | if(!SvROK(ref_cond)) |
1380 | Perl_croak(aTHX_ "Argument to cond_timedwait needs to be passed as ref"); |
1381 | ref_cond = SvRV(ref_cond); |
1382 | if(SvROK(ref_cond)) |
1383 | ref_cond = SvRV(ref_cond); |
29ecdb6f |
1384 | ssv = Perl_sharedsv_find(aTHX_ ref_cond); |
1385 | if(!ssv) |
a0e036c1 |
1386 | croak("cond_timedwait can only be used on shared values"); |
29ecdb6f |
1387 | ul = S_get_userlock(aTHX_ ssv, 1); |
a0e036c1 |
1388 | |
29ecdb6f |
1389 | user_condition = &ul->user_cond; |
a0e036c1 |
1390 | if (! same) { |
1391 | if (!SvROK(ref_lock)) |
1392 | Perl_croak(aTHX_ "cond_timedwait lock needs to be passed as ref"); |
1393 | ref_lock = SvRV(ref_lock); |
1394 | if (SvROK(ref_lock)) ref_lock = SvRV(ref_lock); |
29ecdb6f |
1395 | ssv = Perl_sharedsv_find(aTHX_ ref_lock); |
1396 | if (!ssv) |
a0e036c1 |
1397 | croak("cond_timedwait lock must be a shared value"); |
29ecdb6f |
1398 | ul = S_get_userlock(aTHX_ ssv, 1); |
a0e036c1 |
1399 | } |
29ecdb6f |
1400 | if(ul->lock.owner != aTHX) |
a0e036c1 |
1401 | croak("You need a lock before you can cond_wait"); |
1402 | |
29ecdb6f |
1403 | MUTEX_LOCK(&ul->lock.mutex); |
1404 | ul->lock.owner = NULL; |
1405 | locks = ul->lock.locks; |
1406 | ul->lock.locks = 0; |
a0e036c1 |
1407 | /* since we are releasing the lock here we need to tell other |
1408 | people that is ok to go ahead and use it */ |
29ecdb6f |
1409 | COND_SIGNAL(&ul->lock.cond); |
1410 | RETVAL = Perl_sharedsv_cond_timedwait(user_condition, &ul->lock.mutex, abs); |
1411 | while (ul->lock.owner != NULL) { |
a0e036c1 |
1412 | /* OK -- must reacquire the lock... */ |
29ecdb6f |
1413 | COND_WAIT(&ul->lock.cond, &ul->lock.mutex); |
a0e036c1 |
1414 | } |
29ecdb6f |
1415 | ul->lock.owner = aTHX; |
1416 | ul->lock.locks = locks; |
1417 | MUTEX_UNLOCK(&ul->lock.mutex); |
6f942b98 |
1418 | |
a0e036c1 |
1419 | if (RETVAL == 0) |
1420 | XSRETURN_UNDEF; |
1421 | OUTPUT: |
1422 | RETVAL |
1423 | |
21312124 |
1424 | void |
1425 | cond_signal_enabled(SV *ref) |
ce127893 |
1426 | PROTOTYPE: \[$@%] |
6f942b98 |
1427 | CODE: |
29ecdb6f |
1428 | SV *ssv; |
1429 | user_lock *ul; |
1430 | |
56fcff86 |
1431 | if(!SvROK(ref)) |
1432 | Perl_croak(aTHX_ "Argument to cond_signal needs to be passed as ref"); |
afe38520 |
1433 | ref = SvRV(ref); |
6f942b98 |
1434 | if(SvROK(ref)) |
1435 | ref = SvRV(ref); |
29ecdb6f |
1436 | ssv = Perl_sharedsv_find(aTHX_ ref); |
1437 | if(!ssv) |
10532ef0 |
1438 | croak("cond_signal can only be used on shared values"); |
29ecdb6f |
1439 | ul = S_get_userlock(aTHX_ ssv, 1); |
1440 | if (ckWARN(WARN_THREADS) && ul->lock.owner != aTHX) |
38875929 |
1441 | Perl_warner(aTHX_ packWARN(WARN_THREADS), |
1442 | "cond_signal() called on unlocked variable"); |
29ecdb6f |
1443 | COND_SIGNAL(&ul->user_cond); |
6f942b98 |
1444 | |
21312124 |
1445 | void |
1446 | cond_broadcast_enabled(SV *ref) |
ce127893 |
1447 | PROTOTYPE: \[$@%] |
6f942b98 |
1448 | CODE: |
29ecdb6f |
1449 | SV *ssv; |
1450 | user_lock *ul; |
1451 | |
56fcff86 |
1452 | if(!SvROK(ref)) |
1453 | Perl_croak(aTHX_ "Argument to cond_broadcast needs to be passed as ref"); |
afe38520 |
1454 | ref = SvRV(ref); |
6f942b98 |
1455 | if(SvROK(ref)) |
1456 | ref = SvRV(ref); |
29ecdb6f |
1457 | ssv = Perl_sharedsv_find(aTHX_ ref); |
1458 | if(!ssv) |
6f942b98 |
1459 | croak("cond_broadcast can only be used on shared values"); |
29ecdb6f |
1460 | ul = S_get_userlock(aTHX_ ssv, 1); |
1461 | if (ckWARN(WARN_THREADS) && ul->lock.owner != aTHX) |
38875929 |
1462 | Perl_warner(aTHX_ packWARN(WARN_THREADS), |
1463 | "cond_broadcast() called on unlocked variable"); |
29ecdb6f |
1464 | COND_BROADCAST(&ul->user_cond); |
b050c948 |
1465 | |
5c360ac5 |
1466 | |
1467 | SV* |
1468 | bless(SV* ref, ...); |
1469 | PROTOTYPE: $;$ |
1470 | CODE: |
1471 | { |
1472 | HV* stash; |
29ecdb6f |
1473 | SV *ssv; |
5c360ac5 |
1474 | if (items == 1) |
1475 | stash = CopSTASH(PL_curcop); |
1476 | else { |
29ecdb6f |
1477 | SV* classname = ST(1); |
5c360ac5 |
1478 | STRLEN len; |
1479 | char *ptr; |
1480 | |
29ecdb6f |
1481 | if (classname && !SvGMAGICAL(classname) && |
1482 | !SvAMAGIC(classname) && SvROK(classname)) |
5c360ac5 |
1483 | Perl_croak(aTHX_ "Attempt to bless into a reference"); |
29ecdb6f |
1484 | ptr = SvPV(classname,len); |
5c360ac5 |
1485 | if (ckWARN(WARN_MISC) && len == 0) |
1486 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1487 | "Explicit blessing to '' (assuming package main)"); |
1488 | stash = gv_stashpvn(ptr, len, TRUE); |
1489 | } |
1490 | SvREFCNT_inc(ref); |
1491 | (void)sv_bless(ref, stash); |
1492 | RETVAL = ref; |
29ecdb6f |
1493 | ssv = Perl_sharedsv_find(aTHX_ ref); |
1494 | if(ssv) { |
5c360ac5 |
1495 | dTHXc; |
1496 | ENTER_LOCK; |
1497 | SHARED_CONTEXT; |
1498 | { |
bfcb3514 |
1499 | SV* fake_stash = newSVpv(HvNAME_get(stash),0); |
29ecdb6f |
1500 | (void)sv_bless(ssv,(HV*)fake_stash); |
5c360ac5 |
1501 | } |
1502 | CALLER_CONTEXT; |
1503 | LEAVE_LOCK; |
1504 | } |
1505 | } |
1506 | OUTPUT: |
1507 | RETVAL |
1508 | |
73e09c8f |
1509 | #endif /* USE_ITHREADS */ |
1510 | |
68795e93 |
1511 | BOOT: |
1512 | { |
73e09c8f |
1513 | #ifdef USE_ITHREADS |
68795e93 |
1514 | Perl_sharedsv_init(aTHX); |
73e09c8f |
1515 | #endif /* USE_ITHREADS */ |
68795e93 |
1516 | } |