Commit | Line | Data |
68795e93 |
1 | #define PERL_NO_GET_CONTEXT |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
5 | |
73e09c8f |
6 | #ifdef USE_ITHREADS |
7 | |
c05ae023 |
8 | |
68795e93 |
9 | #ifdef WIN32 |
10 | #include <windows.h> |
11 | #include <win32thread.h> |
68795e93 |
12 | #else |
5c728af0 |
13 | #ifdef OS2 |
14 | typedef perl_os_thread pthread_t; |
15 | #else |
68795e93 |
16 | #include <pthread.h> |
5c728af0 |
17 | #endif |
68795e93 |
18 | #include <thread.h> |
68795e93 |
19 | #define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
20 | #ifdef OLD_PTHREADS_API |
21 | #define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
68795e93 |
22 | #else |
23 | #define PERL_THREAD_DETACH(t) pthread_detach((t)) |
c05ae023 |
24 | #endif /* OLD_PTHREADS_API */ |
467f3f08 |
25 | #endif |
68795e93 |
26 | |
c05ae023 |
27 | |
28 | |
29 | |
62375a60 |
30 | /* Values for 'state' member */ |
31 | #define PERL_ITHR_JOINABLE 0 |
32 | #define PERL_ITHR_DETACHED 1 |
33 | #define PERL_ITHR_FINISHED 4 |
34 | #define PERL_ITHR_JOINED 2 |
35 | |
68795e93 |
36 | typedef struct ithread_s { |
6dfd2d05 |
37 | struct ithread_s *next; /* Next thread in the list */ |
38 | struct ithread_s *prev; /* Prev thread in the list */ |
68795e93 |
39 | PerlInterpreter *interp; /* The threads interpreter */ |
6dfd2d05 |
40 | I32 tid; /* Threads module's thread id */ |
41 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
42 | I32 count; /* How many SVs have a reference to us */ |
43 | signed char state; /* Are we detached ? */ |
a446a88f |
44 | int gimme; /* Context of create */ |
68795e93 |
45 | SV* init_function; /* Code to run */ |
6dfd2d05 |
46 | SV* params; /* Args to pass function */ |
68795e93 |
47 | #ifdef WIN32 |
48 | DWORD thr; /* OS's idea if thread id */ |
49 | HANDLE handle; /* OS's waitable handle */ |
50 | #else |
51 | pthread_t thr; /* OS's handle for the thread */ |
52 | #endif |
53 | } ithread; |
54 | |
55 | ithread *threads; |
56 | |
57 | /* Macros to supply the aTHX_ in an embed.h like manner */ |
58 | #define ithread_join(thread) Perl_ithread_join(aTHX_ thread) |
59 | #define ithread_DESTROY(thread) Perl_ithread_DESTROY(aTHX_ thread) |
60 | #define ithread_CLONE(thread) Perl_ithread_CLONE(aTHX_ thread) |
61 | #define ithread_detach(thread) Perl_ithread_detach(aTHX_ thread) |
62 | #define ithread_tid(thread) ((thread)->tid) |
f9dff5f5 |
63 | #define ithread_yield(thread) (YIELD); |
68795e93 |
64 | |
58c2ef19 |
65 | static perl_mutex create_destruct_mutex; /* protects the creation and destruction of threads*/ |
68795e93 |
66 | |
67 | I32 tid_counter = 0; |
62375a60 |
68 | I32 known_threads = 0; |
58c2ef19 |
69 | I32 active_threads = 0; |
c05ae023 |
70 | |
71 | |
72 | void Perl_ithread_set (pTHX_ ithread* thread) |
73 | { |
08ef4a90 |
74 | SV* thread_sv = newSViv(PTR2IV(thread)); |
c05ae023 |
75 | if(!hv_store(PL_modglobal, "threads::self", 12, thread_sv,0)) { |
76 | croak("%s\n","Internal error, couldn't set TLS"); |
77 | } |
78 | } |
79 | |
80 | ithread* Perl_ithread_get (pTHX) { |
81 | SV** thread_sv = hv_fetch(PL_modglobal, "threads::self",12,0); |
82 | if(!thread_sv) { |
83 | croak("%s\n","Internal error, couldn't get TLS"); |
84 | } |
08ef4a90 |
85 | return INT2PTR(ithread*,SvIV(*thread_sv)); |
c05ae023 |
86 | } |
87 | |
88 | |
68795e93 |
89 | |
90 | /* |
91 | * Clear up after thread is done with |
92 | */ |
93 | void |
62375a60 |
94 | Perl_ithread_destruct (pTHX_ ithread* thread, const char *why) |
68795e93 |
95 | { |
669f4df4 |
96 | PerlInterpreter *freeperl = NULL; |
68795e93 |
97 | MUTEX_LOCK(&thread->mutex); |
62375a60 |
98 | if (!thread->next) { |
99 | Perl_croak(aTHX_ "panic: destruct destroyed thread %p (%s)",thread, why); |
100 | } |
68795e93 |
101 | if (thread->count != 0) { |
102 | MUTEX_UNLOCK(&thread->mutex); |
d1400e48 |
103 | return; |
68795e93 |
104 | } |
58c2ef19 |
105 | MUTEX_LOCK(&create_destruct_mutex); |
68795e93 |
106 | /* Remove from circular list of threads */ |
107 | if (thread->next == thread) { |
108 | /* last one should never get here ? */ |
109 | threads = NULL; |
110 | } |
111 | else { |
f42ad631 |
112 | thread->next->prev = thread->prev; |
113 | thread->prev->next = thread->next; |
68795e93 |
114 | if (threads == thread) { |
115 | threads = thread->next; |
116 | } |
62375a60 |
117 | thread->next = NULL; |
118 | thread->prev = NULL; |
68795e93 |
119 | } |
62375a60 |
120 | known_threads--; |
121 | assert( known_threads >= 0 ); |
ba14dd9a |
122 | #if 0 |
62375a60 |
123 | Perl_warn(aTHX_ "destruct %d @ %p by %p now %d", |
124 | thread->tid,thread->interp,aTHX, known_threads); |
ba14dd9a |
125 | #endif |
62375a60 |
126 | MUTEX_UNLOCK(&create_destruct_mutex); |
127 | /* Thread is now disowned */ |
c2f2a82b |
128 | |
129 | if(thread->interp) { |
1c3adb19 |
130 | dTHXa(thread->interp); |
c2f2a82b |
131 | ithread* current_thread; |
3e79ab2c |
132 | #ifdef OEMVS |
133 | void *ptr; |
134 | #endif |
68795e93 |
135 | PERL_SET_CONTEXT(thread->interp); |
c05ae023 |
136 | current_thread = Perl_ithread_get(aTHX); |
137 | Perl_ithread_set(aTHX_ thread); |
138 | |
3b1c3273 |
139 | |
140 | |
141 | |
1c3adb19 |
142 | SvREFCNT_dec(thread->params); |
3b1c3273 |
143 | |
144 | |
145 | |
1c3adb19 |
146 | thread->params = Nullsv; |
c2f2a82b |
147 | perl_destruct(thread->interp); |
669f4df4 |
148 | freeperl = thread->interp; |
68795e93 |
149 | thread->interp = NULL; |
150 | } |
d1400e48 |
151 | MUTEX_UNLOCK(&thread->mutex); |
1c3adb19 |
152 | MUTEX_DESTROY(&thread->mutex); |
153 | PerlMemShared_free(thread); |
669f4df4 |
154 | if (freeperl) |
155 | perl_free(freeperl); |
1d784c90 |
156 | |
64821230 |
157 | PERL_SET_CONTEXT(aTHX); |
68795e93 |
158 | } |
159 | |
62375a60 |
160 | int |
161 | Perl_ithread_hook(pTHX) |
162 | { |
163 | int veto_cleanup = 0; |
164 | MUTEX_LOCK(&create_destruct_mutex); |
165 | if (aTHX == PL_curinterp && active_threads != 1) { |
3c42a367 |
166 | Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running", |
436c6dd3 |
167 | (IV)active_threads); |
62375a60 |
168 | veto_cleanup = 1; |
169 | } |
170 | MUTEX_UNLOCK(&create_destruct_mutex); |
171 | return veto_cleanup; |
172 | } |
173 | |
174 | void |
175 | Perl_ithread_detach(pTHX_ ithread *thread) |
176 | { |
177 | MUTEX_LOCK(&thread->mutex); |
178 | if (!(thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) { |
179 | thread->state |= PERL_ITHR_DETACHED; |
180 | #ifdef WIN32 |
181 | CloseHandle(thread->handle); |
182 | thread->handle = 0; |
183 | #else |
184 | PERL_THREAD_DETACH(thread->thr); |
185 | #endif |
186 | } |
187 | if ((thread->state & PERL_ITHR_FINISHED) && |
188 | (thread->state & PERL_ITHR_DETACHED)) { |
189 | MUTEX_UNLOCK(&thread->mutex); |
190 | Perl_ithread_destruct(aTHX_ thread, "detach"); |
191 | } |
192 | else { |
193 | MUTEX_UNLOCK(&thread->mutex); |
194 | } |
195 | } |
68795e93 |
196 | |
197 | /* MAGIC (in mg.h sense) hooks */ |
198 | |
199 | int |
200 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
201 | { |
202 | ithread *thread = (ithread *) mg->mg_ptr; |
203 | SvIVX(sv) = PTR2IV(thread); |
204 | SvIOK_on(sv); |
205 | return 0; |
206 | } |
207 | |
208 | int |
209 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
210 | { |
211 | ithread *thread = (ithread *) mg->mg_ptr; |
212 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
213 | thread->count--; |
62375a60 |
214 | if (thread->count == 0) { |
1c3adb19 |
215 | if(thread->state & PERL_ITHR_FINISHED && |
216 | (thread->state & PERL_ITHR_DETACHED || |
217 | thread->state & PERL_ITHR_JOINED)) |
218 | { |
219 | MUTEX_UNLOCK(&thread->mutex); |
220 | Perl_ithread_destruct(aTHX_ thread, "no reference"); |
221 | } |
1ea20f42 |
222 | else { |
223 | MUTEX_UNLOCK(&thread->mutex); |
224 | } |
62375a60 |
225 | } |
226 | else { |
227 | MUTEX_UNLOCK(&thread->mutex); |
228 | } |
68795e93 |
229 | return 0; |
230 | } |
231 | |
232 | int |
233 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
234 | { |
235 | ithread *thread = (ithread *) mg->mg_ptr; |
236 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
237 | thread->count++; |
238 | MUTEX_UNLOCK(&thread->mutex); |
239 | return 0; |
240 | } |
241 | |
242 | MGVTBL ithread_vtbl = { |
243 | ithread_mg_get, /* get */ |
244 | 0, /* set */ |
245 | 0, /* len */ |
246 | 0, /* clear */ |
247 | ithread_mg_free, /* free */ |
248 | 0, /* copy */ |
249 | ithread_mg_dup /* dup */ |
250 | }; |
251 | |
47ba8780 |
252 | |
47ba8780 |
253 | /* |
b1edfb69 |
254 | * Starts executing the thread. Needs to clean up memory a tad better. |
68795e93 |
255 | * Passed as the C level function to run in the new thread |
b1edfb69 |
256 | */ |
47ba8780 |
257 | |
258 | #ifdef WIN32 |
68795e93 |
259 | THREAD_RET_TYPE |
260 | Perl_ithread_run(LPVOID arg) { |
47ba8780 |
261 | #else |
68795e93 |
262 | void* |
263 | Perl_ithread_run(void * arg) { |
47ba8780 |
264 | #endif |
5b414d21 |
265 | ithread* thread = (ithread*) arg; |
47ba8780 |
266 | dTHXa(thread->interp); |
47ba8780 |
267 | PERL_SET_CONTEXT(thread->interp); |
c05ae023 |
268 | Perl_ithread_set(aTHX_ thread); |
47ba8780 |
269 | |
68795e93 |
270 | #if 0 |
271 | /* Far from clear messing with ->thr child-side is a good idea */ |
272 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
273 | #ifdef WIN32 |
274 | thread->thr = GetCurrentThreadId(); |
275 | #else |
276 | thread->thr = pthread_self(); |
277 | #endif |
68795e93 |
278 | MUTEX_UNLOCK(&thread->mutex); |
279 | #endif |
47ba8780 |
280 | |
47ba8780 |
281 | PL_perl_destruct_level = 2; |
4f896ddc |
282 | |
47ba8780 |
283 | { |
68795e93 |
284 | AV* params = (AV*) SvRV(thread->params); |
285 | I32 len = av_len(params)+1; |
47ba8780 |
286 | int i; |
287 | dSP; |
47ba8780 |
288 | ENTER; |
289 | SAVETMPS; |
290 | PUSHMARK(SP); |
68795e93 |
291 | for(i = 0; i < len; i++) { |
292 | XPUSHs(av_shift(params)); |
47ba8780 |
293 | } |
294 | PUTBACK; |
a446a88f |
295 | len = call_sv(thread->init_function, thread->gimme|G_EVAL); |
0405e91e |
296 | |
68795e93 |
297 | SPAGAIN; |
a446a88f |
298 | for (i=len-1; i >= 0; i--) { |
e1c44605 |
299 | SV *sv = POPs; |
300 | av_store(params, i, SvREFCNT_inc(sv)); |
a446a88f |
301 | } |
a446a88f |
302 | if (SvTRUE(ERRSV)) { |
6b3c7930 |
303 | Perl_warn(aTHX_ "thread failed to start: %" SVf, ERRSV); |
a446a88f |
304 | } |
47ba8780 |
305 | FREETMPS; |
306 | LEAVE; |
68795e93 |
307 | SvREFCNT_dec(thread->init_function); |
47ba8780 |
308 | } |
309 | |
fd58862f |
310 | PerlIO_flush((PerlIO*)NULL); |
68795e93 |
311 | MUTEX_LOCK(&thread->mutex); |
62375a60 |
312 | thread->state |= PERL_ITHR_FINISHED; |
313 | |
314 | if (thread->state & PERL_ITHR_DETACHED) { |
47ba8780 |
315 | MUTEX_UNLOCK(&thread->mutex); |
62375a60 |
316 | Perl_ithread_destruct(aTHX_ thread, "detached finish"); |
47ba8780 |
317 | } else { |
62375a60 |
318 | MUTEX_UNLOCK(&thread->mutex); |
319 | } |
91604d21 |
320 | MUTEX_LOCK(&create_destruct_mutex); |
321 | active_threads--; |
322 | assert( active_threads >= 0 ); |
323 | MUTEX_UNLOCK(&create_destruct_mutex); |
324 | |
47ba8780 |
325 | #ifdef WIN32 |
326 | return (DWORD)0; |
e8f2bb9a |
327 | #else |
328 | return 0; |
47ba8780 |
329 | #endif |
68795e93 |
330 | } |
331 | |
332 | SV * |
333 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
334 | { |
335 | SV *sv; |
336 | MAGIC *mg; |
337 | if (inc) { |
338 | MUTEX_LOCK(&thread->mutex); |
339 | thread->count++; |
68795e93 |
340 | MUTEX_UNLOCK(&thread->mutex); |
341 | } |
342 | if (!obj) |
343 | obj = newSV(0); |
344 | sv = newSVrv(obj,classname); |
345 | sv_setiv(sv,PTR2IV(thread)); |
346 | mg = sv_magicext(sv,Nullsv,PERL_MAGIC_shared_scalar,&ithread_vtbl,(char *)thread,0); |
347 | mg->mg_flags |= MGf_DUP; |
348 | SvREADONLY_on(sv); |
349 | return obj; |
350 | } |
47ba8780 |
351 | |
68795e93 |
352 | ithread * |
353 | SV_to_ithread(pTHX_ SV *sv) |
354 | { |
68795e93 |
355 | if (SvROK(sv)) |
356 | { |
c05ae023 |
357 | return INT2PTR(ithread*, SvIV(SvRV(sv))); |
68795e93 |
358 | } |
359 | else |
360 | { |
c05ae023 |
361 | return Perl_ithread_get(aTHX); |
68795e93 |
362 | } |
47ba8780 |
363 | } |
364 | |
47ba8780 |
365 | /* |
6dfd2d05 |
366 | * ithread->create(); ( aka ithread->new() ) |
68795e93 |
367 | * Called in context of parent thread |
b1edfb69 |
368 | */ |
47ba8780 |
369 | |
68795e93 |
370 | SV * |
371 | Perl_ithread_create(pTHX_ SV *obj, char* classname, SV* init_function, SV* params) |
372 | { |
373 | ithread* thread; |
374 | CLONE_PARAMS clone_param; |
c05ae023 |
375 | ithread* current_thread = Perl_ithread_get(aTHX); |
3b1c3273 |
376 | |
377 | SV** tmps_tmp = PL_tmps_stack; |
378 | I32 tmps_ix = PL_tmps_ix; |
379 | |
c05ae023 |
380 | |
58c2ef19 |
381 | MUTEX_LOCK(&create_destruct_mutex); |
68795e93 |
382 | thread = PerlMemShared_malloc(sizeof(ithread)); |
383 | Zero(thread,1,ithread); |
384 | thread->next = threads; |
385 | thread->prev = threads->prev; |
f42ad631 |
386 | threads->prev = thread; |
68795e93 |
387 | thread->prev->next = thread; |
388 | /* Set count to 1 immediately in case thread exits before |
389 | * we return to caller ! |
390 | */ |
391 | thread->count = 1; |
392 | MUTEX_INIT(&thread->mutex); |
393 | thread->tid = tid_counter++; |
a446a88f |
394 | thread->gimme = GIMME_V; |
4f896ddc |
395 | |
68795e93 |
396 | /* "Clone" our interpreter into the thread's interpreter |
397 | * This gives thread access to "static data" and code. |
398 | */ |
47ba8780 |
399 | |
68795e93 |
400 | PerlIO_flush((PerlIO*)NULL); |
c05ae023 |
401 | Perl_ithread_set(aTHX_ thread); |
3b1c3273 |
402 | |
9c98058e |
403 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct |
404 | value */ |
405 | PL_srand_called = FALSE; /* Set it to false so we can detect |
406 | if it gets set during the clone */ |
3b1c3273 |
407 | |
47ba8780 |
408 | #ifdef WIN32 |
68795e93 |
409 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
410 | #else |
68795e93 |
411 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
412 | #endif |
ba14dd9a |
413 | /* perl_clone leaves us in new interpreter's context. |
c8dae523 |
414 | As it is tricky to spot an implicit aTHX, create a new scope |
a446a88f |
415 | with aTHX matching the context for the duration of |
ba14dd9a |
416 | our work for new interpreter. |
417 | */ |
418 | { |
419 | dTHXa(thread->interp); |
9c98058e |
420 | |
58c2ef19 |
421 | /* Here we remove END blocks since they should only run |
62375a60 |
422 | in the thread they are created |
58c2ef19 |
423 | */ |
424 | SvREFCNT_dec(PL_endav); |
425 | PL_endav = newAV(); |
d1400e48 |
426 | clone_param.flags = 0; |
ba14dd9a |
427 | thread->init_function = sv_dup(init_function, &clone_param); |
428 | if (SvREFCNT(thread->init_function) == 0) { |
429 | SvREFCNT_inc(thread->init_function); |
d1400e48 |
430 | } |
3b1c3273 |
431 | |
432 | |
ba14dd9a |
433 | |
434 | thread->params = sv_dup(params, &clone_param); |
435 | SvREFCNT_inc(thread->params); |
3b1c3273 |
436 | |
437 | |
438 | /* The code below checks that anything living on |
439 | the tmps stack and has been cloned (so it lives in the |
440 | ptr_table) has a refcount higher than 0 |
441 | |
442 | If the refcount is 0 it means that a something on the |
443 | stack/context was holding a reference to it and |
444 | since we init_stacks() in perl_clone that won't get |
445 | cleaned and we will get a leaked scalar. |
446 | The reason it was cloned was that it lived on the |
447 | @_ stack. |
448 | |
449 | Example of this can be found in bugreport 15837 |
450 | where calls in the parameter list end up as a temp |
451 | |
452 | One could argue that this fix should be in perl_clone |
453 | */ |
454 | |
455 | |
456 | while (tmps_ix > 0) { |
457 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
458 | tmps_ix--; |
459 | if (sv && SvREFCNT(sv) == 0) { |
460 | SvREFCNT_inc(sv); |
461 | SvREFCNT_dec(sv); |
462 | } |
463 | } |
464 | |
465 | |
466 | |
ba14dd9a |
467 | SvTEMP_off(thread->init_function); |
468 | ptr_table_free(PL_ptr_table); |
469 | PL_ptr_table = NULL; |
ffb29f90 |
470 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
ba14dd9a |
471 | } |
c05ae023 |
472 | Perl_ithread_set(aTHX_ current_thread); |
68795e93 |
473 | PERL_SET_CONTEXT(aTHX); |
47ba8780 |
474 | |
68795e93 |
475 | /* Start the thread */ |
47ba8780 |
476 | |
477 | #ifdef WIN32 |
478 | |
68795e93 |
479 | thread->handle = CreateThread(NULL, 0, Perl_ithread_run, |
47ba8780 |
480 | (LPVOID)thread, 0, &thread->thr); |
481 | |
82c40bf6 |
482 | #else |
fa26028c |
483 | { |
484 | static pthread_attr_t attr; |
485 | static int attr_inited = 0; |
fa26028c |
486 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
487 | if (!attr_inited) { |
488 | attr_inited = 1; |
489 | pthread_attr_init(&attr); |
490 | } |
491 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
492 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
493 | # endif |
3eb37d38 |
494 | # ifdef THREAD_CREATE_NEEDS_STACK |
495 | if(pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK)) |
6dfd2d05 |
496 | Perl_croak(aTHX_ "panic: pthread_attr_setstacksize failed"); |
3eb37d38 |
497 | # endif |
498 | |
3ad0b7d6 |
499 | #ifdef OLD_PTHREADS_API |
68795e93 |
500 | pthread_create( &thread->thr, attr, Perl_ithread_run, (void *)thread); |
47ba8780 |
501 | #else |
58d975c3 |
502 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
47cb5ff9 |
503 | pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); |
19a077f6 |
504 | # endif |
68795e93 |
505 | pthread_create( &thread->thr, &attr, Perl_ithread_run, (void *)thread); |
47ba8780 |
506 | #endif |
3ad0b7d6 |
507 | } |
82c40bf6 |
508 | #endif |
62375a60 |
509 | known_threads++; |
58c2ef19 |
510 | active_threads++; |
511 | MUTEX_UNLOCK(&create_destruct_mutex); |
95393226 |
512 | sv_2mortal(params); |
3b1c3273 |
513 | |
68795e93 |
514 | return ithread_to_SV(aTHX_ obj, thread, classname, FALSE); |
515 | } |
47ba8780 |
516 | |
68795e93 |
517 | SV* |
518 | Perl_ithread_self (pTHX_ SV *obj, char* Class) |
519 | { |
c05ae023 |
520 | ithread *thread = Perl_ithread_get(aTHX); |
fe53aa5b |
521 | if (thread) |
522 | return ithread_to_SV(aTHX_ obj, thread, Class, TRUE); |
523 | else |
524 | Perl_croak(aTHX_ "panic: cannot find thread data"); |
c5661c80 |
525 | return NULL; /* silence compiler warning */ |
47ba8780 |
526 | } |
527 | |
528 | /* |
e1c44605 |
529 | * Joins the thread this code needs to take the returnvalue from the |
68795e93 |
530 | * call_sv and send it back |
b1edfb69 |
531 | */ |
47ba8780 |
532 | |
68795e93 |
533 | void |
534 | Perl_ithread_CLONE(pTHX_ SV *obj) |
535 | { |
536 | if (SvROK(obj)) |
537 | { |
538 | ithread *thread = SV_to_ithread(aTHX_ obj); |
539 | } |
540 | else |
541 | { |
436c6dd3 |
542 | Perl_warn(aTHX_ "CLONE %" SVf,obj); |
68795e93 |
543 | } |
47ba8780 |
544 | } |
545 | |
62375a60 |
546 | AV* |
68795e93 |
547 | Perl_ithread_join(pTHX_ SV *obj) |
548 | { |
549 | ithread *thread = SV_to_ithread(aTHX_ obj); |
550 | MUTEX_LOCK(&thread->mutex); |
62375a60 |
551 | if (thread->state & PERL_ITHR_DETACHED) { |
a446a88f |
552 | MUTEX_UNLOCK(&thread->mutex); |
553 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
554 | } |
62375a60 |
555 | else if (thread->state & PERL_ITHR_JOINED) { |
a446a88f |
556 | MUTEX_UNLOCK(&thread->mutex); |
557 | Perl_croak(aTHX_ "Thread already joined"); |
558 | } |
559 | else { |
e1c44605 |
560 | AV* retparam; |
47ba8780 |
561 | #ifdef WIN32 |
562 | DWORD waitcode; |
47ba8780 |
563 | #else |
564 | void *retval; |
47ba8780 |
565 | #endif |
47ba8780 |
566 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
567 | #ifdef WIN32 |
568 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
569 | #else |
570 | pthread_join(thread->thr,&retval); |
571 | #endif |
47ba8780 |
572 | MUTEX_LOCK(&thread->mutex); |
e1c44605 |
573 | |
62375a60 |
574 | /* sv_dup over the args */ |
e1c44605 |
575 | { |
1d784c90 |
576 | ithread* current_thread; |
62375a60 |
577 | AV* params = (AV*) SvRV(thread->params); |
b23f1a86 |
578 | PerlInterpreter *other_perl = thread->interp; |
e1c44605 |
579 | CLONE_PARAMS clone_params; |
3275ba96 |
580 | clone_params.stashes = newAV(); |
0405e91e |
581 | clone_params.flags |= CLONEf_JOIN_IN; |
e1c44605 |
582 | PL_ptr_table = ptr_table_new(); |
c05ae023 |
583 | current_thread = Perl_ithread_get(aTHX); |
584 | Perl_ithread_set(aTHX_ thread); |
b23f1a86 |
585 | /* ensure 'meaningful' addresses retain their meaning */ |
586 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
587 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
588 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
0405e91e |
589 | |
767c1403 |
590 | #if 0 |
0405e91e |
591 | { |
592 | I32 len = av_len(params)+1; |
593 | I32 i; |
594 | for(i = 0; i < len; i++) { |
767c1403 |
595 | sv_dump(SvRV(AvARRAY(params)[i])); |
0405e91e |
596 | } |
597 | } |
767c1403 |
598 | #endif |
e1c44605 |
599 | retparam = (AV*) sv_dup((SV*)params, &clone_params); |
b4cb676b |
600 | #if 0 |
0405e91e |
601 | { |
602 | I32 len = av_len(retparam)+1; |
603 | I32 i; |
604 | for(i = 0; i < len; i++) { |
b4cb676b |
605 | sv_dump(SvRV(AvARRAY(retparam)[i])); |
0405e91e |
606 | } |
607 | } |
b4cb676b |
608 | #endif |
c05ae023 |
609 | Perl_ithread_set(aTHX_ current_thread); |
3275ba96 |
610 | SvREFCNT_dec(clone_params.stashes); |
e1c44605 |
611 | SvREFCNT_inc(retparam); |
612 | ptr_table_free(PL_ptr_table); |
613 | PL_ptr_table = NULL; |
614 | |
615 | } |
6dfd2d05 |
616 | /* We are finished with it */ |
62375a60 |
617 | thread->state |= PERL_ITHR_JOINED; |
47ba8780 |
618 | MUTEX_UNLOCK(&thread->mutex); |
57b48062 |
619 | |
e1c44605 |
620 | return retparam; |
68795e93 |
621 | } |
e1c44605 |
622 | return (AV*)NULL; |
47ba8780 |
623 | } |
624 | |
68795e93 |
625 | void |
68795e93 |
626 | Perl_ithread_DESTROY(pTHX_ SV *sv) |
627 | { |
628 | ithread *thread = SV_to_ithread(aTHX_ sv); |
68795e93 |
629 | sv_unmagic(SvRV(sv),PERL_MAGIC_shared_scalar); |
630 | } |
8222d950 |
631 | |
73e09c8f |
632 | #endif /* USE_ITHREADS */ |
e1c44605 |
633 | |
68795e93 |
634 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
635 | PROTOTYPES: DISABLE |
8222d950 |
636 | |
73e09c8f |
637 | #ifdef USE_ITHREADS |
638 | |
68795e93 |
639 | void |
640 | ithread_new (classname, function_to_call, ...) |
641 | char * classname |
642 | SV * function_to_call |
643 | CODE: |
644 | { |
645 | AV* params = newAV(); |
646 | if (items > 2) { |
647 | int i; |
648 | for(i = 2; i < items ; i++) { |
95393226 |
649 | av_push(params, SvREFCNT_inc(ST(i))); |
68795e93 |
650 | } |
651 | } |
652 | ST(0) = sv_2mortal(Perl_ithread_create(aTHX_ Nullsv, classname, function_to_call, newRV_noinc((SV*) params))); |
653 | XSRETURN(1); |
654 | } |
8222d950 |
655 | |
68795e93 |
656 | void |
678a9b6c |
657 | ithread_list(char *classname) |
658 | PPCODE: |
659 | { |
660 | ithread *curr_thread; |
661 | MUTEX_LOCK(&create_destruct_mutex); |
662 | curr_thread = threads; |
5eb9fe8f |
663 | if(curr_thread->tid != 0) |
2379b307 |
664 | XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE))); |
678a9b6c |
665 | while(curr_thread) { |
678a9b6c |
666 | curr_thread = curr_thread->next; |
667 | if(curr_thread == threads) |
668 | break; |
6794f985 |
669 | if(curr_thread->state & PERL_ITHR_DETACHED || |
5eb9fe8f |
670 | curr_thread->state & PERL_ITHR_JOINED) |
671 | continue; |
2379b307 |
672 | XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE))); |
678a9b6c |
673 | } |
674 | MUTEX_UNLOCK(&create_destruct_mutex); |
675 | } |
676 | |
677 | |
678 | void |
68795e93 |
679 | ithread_self(char *classname) |
680 | CODE: |
681 | { |
682 | ST(0) = sv_2mortal(Perl_ithread_self(aTHX_ Nullsv,classname)); |
683 | XSRETURN(1); |
684 | } |
47ba8780 |
685 | |
686 | int |
68795e93 |
687 | ithread_tid(ithread *thread) |
47ba8780 |
688 | |
689 | void |
68795e93 |
690 | ithread_join(SV *obj) |
e1c44605 |
691 | PPCODE: |
692 | { |
693 | AV* params = Perl_ithread_join(aTHX_ obj); |
694 | int i; |
695 | I32 len = AvFILL(params); |
696 | for (i = 0; i <= len; i++) { |
1c3adb19 |
697 | SV* tmp = av_shift(params); |
698 | XPUSHs(tmp); |
699 | sv_2mortal(tmp); |
e1c44605 |
700 | } |
701 | SvREFCNT_dec(params); |
702 | } |
703 | |
f9dff5f5 |
704 | void |
9d7debe1 |
705 | yield(...) |
70f2e746 |
706 | CODE: |
707 | { |
708 | YIELD; |
709 | } |
710 | |
47ba8780 |
711 | |
712 | void |
68795e93 |
713 | ithread_detach(ithread *thread) |
47ba8780 |
714 | |
47ba8780 |
715 | void |
68795e93 |
716 | ithread_DESTROY(SV *thread) |
717 | |
73e09c8f |
718 | #endif /* USE_ITHREADS */ |
719 | |
68795e93 |
720 | BOOT: |
721 | { |
73e09c8f |
722 | #ifdef USE_ITHREADS |
68795e93 |
723 | ithread* thread; |
e1c44605 |
724 | PL_perl_destruct_level = 2; |
58c2ef19 |
725 | MUTEX_INIT(&create_destruct_mutex); |
726 | MUTEX_LOCK(&create_destruct_mutex); |
62375a60 |
727 | PL_threadhook = &Perl_ithread_hook; |
68795e93 |
728 | thread = PerlMemShared_malloc(sizeof(ithread)); |
729 | Zero(thread,1,ithread); |
730 | PL_perl_destruct_level = 2; |
731 | MUTEX_INIT(&thread->mutex); |
732 | threads = thread; |
733 | thread->next = thread; |
734 | thread->prev = thread; |
735 | thread->interp = aTHX; |
6dfd2d05 |
736 | thread->count = 1; /* Immortal. */ |
68795e93 |
737 | thread->tid = tid_counter++; |
62375a60 |
738 | known_threads++; |
58c2ef19 |
739 | active_threads++; |
1fea7ed3 |
740 | thread->state = PERL_ITHR_DETACHED; |
68795e93 |
741 | #ifdef WIN32 |
742 | thread->thr = GetCurrentThreadId(); |
743 | #else |
744 | thread->thr = pthread_self(); |
745 | #endif |
62375a60 |
746 | |
c05ae023 |
747 | Perl_ithread_set(aTHX_ thread); |
58c2ef19 |
748 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
749 | #endif /* USE_ITHREADS */ |
68795e93 |
750 | } |
751 | |