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) { |
3307a0c5 |
99 | MUTEX_UNLOCK(&thread->mutex); |
62375a60 |
100 | Perl_croak(aTHX_ "panic: destruct destroyed thread %p (%s)",thread, why); |
101 | } |
68795e93 |
102 | if (thread->count != 0) { |
103 | MUTEX_UNLOCK(&thread->mutex); |
d1400e48 |
104 | return; |
68795e93 |
105 | } |
58c2ef19 |
106 | MUTEX_LOCK(&create_destruct_mutex); |
68795e93 |
107 | /* Remove from circular list of threads */ |
108 | if (thread->next == thread) { |
109 | /* last one should never get here ? */ |
110 | threads = NULL; |
111 | } |
112 | else { |
f42ad631 |
113 | thread->next->prev = thread->prev; |
114 | thread->prev->next = thread->next; |
68795e93 |
115 | if (threads == thread) { |
116 | threads = thread->next; |
117 | } |
62375a60 |
118 | thread->next = NULL; |
119 | thread->prev = NULL; |
68795e93 |
120 | } |
62375a60 |
121 | known_threads--; |
122 | assert( known_threads >= 0 ); |
ba14dd9a |
123 | #if 0 |
62375a60 |
124 | Perl_warn(aTHX_ "destruct %d @ %p by %p now %d", |
125 | thread->tid,thread->interp,aTHX, known_threads); |
ba14dd9a |
126 | #endif |
62375a60 |
127 | MUTEX_UNLOCK(&create_destruct_mutex); |
128 | /* Thread is now disowned */ |
c2f2a82b |
129 | |
130 | if(thread->interp) { |
1c3adb19 |
131 | dTHXa(thread->interp); |
c2f2a82b |
132 | ithread* current_thread; |
3e79ab2c |
133 | #ifdef OEMVS |
134 | void *ptr; |
135 | #endif |
68795e93 |
136 | PERL_SET_CONTEXT(thread->interp); |
c05ae023 |
137 | current_thread = Perl_ithread_get(aTHX); |
138 | Perl_ithread_set(aTHX_ thread); |
139 | |
3b1c3273 |
140 | |
141 | |
142 | |
1c3adb19 |
143 | SvREFCNT_dec(thread->params); |
3b1c3273 |
144 | |
145 | |
146 | |
1c3adb19 |
147 | thread->params = Nullsv; |
c2f2a82b |
148 | perl_destruct(thread->interp); |
669f4df4 |
149 | freeperl = thread->interp; |
68795e93 |
150 | thread->interp = NULL; |
151 | } |
d1400e48 |
152 | MUTEX_UNLOCK(&thread->mutex); |
1c3adb19 |
153 | MUTEX_DESTROY(&thread->mutex); |
c7667023 |
154 | #ifdef WIN32 |
155 | if (thread->handle) |
156 | CloseHandle(thread->handle); |
157 | thread->handle = 0; |
158 | #endif |
1c3adb19 |
159 | PerlMemShared_free(thread); |
669f4df4 |
160 | if (freeperl) |
161 | perl_free(freeperl); |
1d784c90 |
162 | |
64821230 |
163 | PERL_SET_CONTEXT(aTHX); |
68795e93 |
164 | } |
165 | |
62375a60 |
166 | int |
167 | Perl_ithread_hook(pTHX) |
168 | { |
169 | int veto_cleanup = 0; |
170 | MUTEX_LOCK(&create_destruct_mutex); |
171 | if (aTHX == PL_curinterp && active_threads != 1) { |
4447dfc1 |
172 | if (ckWARN_d(WARN_THREADS)) |
173 | Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running", |
174 | (IV)active_threads); |
62375a60 |
175 | veto_cleanup = 1; |
176 | } |
177 | MUTEX_UNLOCK(&create_destruct_mutex); |
178 | return veto_cleanup; |
179 | } |
180 | |
181 | void |
182 | Perl_ithread_detach(pTHX_ ithread *thread) |
183 | { |
184 | MUTEX_LOCK(&thread->mutex); |
185 | if (!(thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) { |
186 | thread->state |= PERL_ITHR_DETACHED; |
187 | #ifdef WIN32 |
188 | CloseHandle(thread->handle); |
189 | thread->handle = 0; |
190 | #else |
191 | PERL_THREAD_DETACH(thread->thr); |
192 | #endif |
193 | } |
194 | if ((thread->state & PERL_ITHR_FINISHED) && |
195 | (thread->state & PERL_ITHR_DETACHED)) { |
196 | MUTEX_UNLOCK(&thread->mutex); |
197 | Perl_ithread_destruct(aTHX_ thread, "detach"); |
198 | } |
199 | else { |
200 | MUTEX_UNLOCK(&thread->mutex); |
201 | } |
202 | } |
68795e93 |
203 | |
204 | /* MAGIC (in mg.h sense) hooks */ |
205 | |
206 | int |
207 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
208 | { |
209 | ithread *thread = (ithread *) mg->mg_ptr; |
45977657 |
210 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
211 | SvIOK_on(sv); |
212 | return 0; |
213 | } |
214 | |
215 | int |
216 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
217 | { |
218 | ithread *thread = (ithread *) mg->mg_ptr; |
219 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
220 | thread->count--; |
62375a60 |
221 | if (thread->count == 0) { |
1c3adb19 |
222 | if(thread->state & PERL_ITHR_FINISHED && |
223 | (thread->state & PERL_ITHR_DETACHED || |
224 | thread->state & PERL_ITHR_JOINED)) |
225 | { |
226 | MUTEX_UNLOCK(&thread->mutex); |
227 | Perl_ithread_destruct(aTHX_ thread, "no reference"); |
228 | } |
1ea20f42 |
229 | else { |
230 | MUTEX_UNLOCK(&thread->mutex); |
231 | } |
62375a60 |
232 | } |
233 | else { |
234 | MUTEX_UNLOCK(&thread->mutex); |
235 | } |
68795e93 |
236 | return 0; |
237 | } |
238 | |
239 | int |
240 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
241 | { |
242 | ithread *thread = (ithread *) mg->mg_ptr; |
243 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
244 | thread->count++; |
245 | MUTEX_UNLOCK(&thread->mutex); |
246 | return 0; |
247 | } |
248 | |
249 | MGVTBL ithread_vtbl = { |
250 | ithread_mg_get, /* get */ |
251 | 0, /* set */ |
252 | 0, /* len */ |
253 | 0, /* clear */ |
254 | ithread_mg_free, /* free */ |
255 | 0, /* copy */ |
256 | ithread_mg_dup /* dup */ |
257 | }; |
258 | |
47ba8780 |
259 | |
47ba8780 |
260 | /* |
b1edfb69 |
261 | * Starts executing the thread. Needs to clean up memory a tad better. |
68795e93 |
262 | * Passed as the C level function to run in the new thread |
b1edfb69 |
263 | */ |
47ba8780 |
264 | |
265 | #ifdef WIN32 |
68795e93 |
266 | THREAD_RET_TYPE |
267 | Perl_ithread_run(LPVOID arg) { |
47ba8780 |
268 | #else |
68795e93 |
269 | void* |
270 | Perl_ithread_run(void * arg) { |
47ba8780 |
271 | #endif |
5b414d21 |
272 | ithread* thread = (ithread*) arg; |
47ba8780 |
273 | dTHXa(thread->interp); |
47ba8780 |
274 | PERL_SET_CONTEXT(thread->interp); |
c05ae023 |
275 | Perl_ithread_set(aTHX_ thread); |
47ba8780 |
276 | |
68795e93 |
277 | #if 0 |
278 | /* Far from clear messing with ->thr child-side is a good idea */ |
279 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
280 | #ifdef WIN32 |
281 | thread->thr = GetCurrentThreadId(); |
282 | #else |
283 | thread->thr = pthread_self(); |
284 | #endif |
68795e93 |
285 | MUTEX_UNLOCK(&thread->mutex); |
286 | #endif |
47ba8780 |
287 | |
47ba8780 |
288 | PL_perl_destruct_level = 2; |
4f896ddc |
289 | |
47ba8780 |
290 | { |
68795e93 |
291 | AV* params = (AV*) SvRV(thread->params); |
292 | I32 len = av_len(params)+1; |
47ba8780 |
293 | int i; |
294 | dSP; |
47ba8780 |
295 | ENTER; |
296 | SAVETMPS; |
297 | PUSHMARK(SP); |
68795e93 |
298 | for(i = 0; i < len; i++) { |
299 | XPUSHs(av_shift(params)); |
47ba8780 |
300 | } |
301 | PUTBACK; |
a446a88f |
302 | len = call_sv(thread->init_function, thread->gimme|G_EVAL); |
0405e91e |
303 | |
68795e93 |
304 | SPAGAIN; |
a446a88f |
305 | for (i=len-1; i >= 0; i--) { |
e1c44605 |
306 | SV *sv = POPs; |
307 | av_store(params, i, SvREFCNT_inc(sv)); |
a446a88f |
308 | } |
4447dfc1 |
309 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
6b3c7930 |
310 | Perl_warn(aTHX_ "thread failed to start: %" SVf, ERRSV); |
a446a88f |
311 | } |
47ba8780 |
312 | FREETMPS; |
313 | LEAVE; |
68795e93 |
314 | SvREFCNT_dec(thread->init_function); |
47ba8780 |
315 | } |
316 | |
fd58862f |
317 | PerlIO_flush((PerlIO*)NULL); |
68795e93 |
318 | MUTEX_LOCK(&thread->mutex); |
62375a60 |
319 | thread->state |= PERL_ITHR_FINISHED; |
320 | |
321 | if (thread->state & PERL_ITHR_DETACHED) { |
47ba8780 |
322 | MUTEX_UNLOCK(&thread->mutex); |
62375a60 |
323 | Perl_ithread_destruct(aTHX_ thread, "detached finish"); |
47ba8780 |
324 | } else { |
62375a60 |
325 | MUTEX_UNLOCK(&thread->mutex); |
326 | } |
91604d21 |
327 | MUTEX_LOCK(&create_destruct_mutex); |
328 | active_threads--; |
329 | assert( active_threads >= 0 ); |
330 | MUTEX_UNLOCK(&create_destruct_mutex); |
331 | |
47ba8780 |
332 | #ifdef WIN32 |
333 | return (DWORD)0; |
e8f2bb9a |
334 | #else |
335 | return 0; |
47ba8780 |
336 | #endif |
68795e93 |
337 | } |
338 | |
339 | SV * |
340 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
341 | { |
342 | SV *sv; |
343 | MAGIC *mg; |
344 | if (inc) { |
345 | MUTEX_LOCK(&thread->mutex); |
346 | thread->count++; |
68795e93 |
347 | MUTEX_UNLOCK(&thread->mutex); |
348 | } |
349 | if (!obj) |
350 | obj = newSV(0); |
351 | sv = newSVrv(obj,classname); |
352 | sv_setiv(sv,PTR2IV(thread)); |
353 | mg = sv_magicext(sv,Nullsv,PERL_MAGIC_shared_scalar,&ithread_vtbl,(char *)thread,0); |
354 | mg->mg_flags |= MGf_DUP; |
355 | SvREADONLY_on(sv); |
356 | return obj; |
357 | } |
47ba8780 |
358 | |
68795e93 |
359 | ithread * |
360 | SV_to_ithread(pTHX_ SV *sv) |
361 | { |
68795e93 |
362 | if (SvROK(sv)) |
363 | { |
c05ae023 |
364 | return INT2PTR(ithread*, SvIV(SvRV(sv))); |
68795e93 |
365 | } |
366 | else |
367 | { |
c05ae023 |
368 | return Perl_ithread_get(aTHX); |
68795e93 |
369 | } |
47ba8780 |
370 | } |
371 | |
47ba8780 |
372 | /* |
6dfd2d05 |
373 | * ithread->create(); ( aka ithread->new() ) |
68795e93 |
374 | * Called in context of parent thread |
b1edfb69 |
375 | */ |
47ba8780 |
376 | |
68795e93 |
377 | SV * |
378 | Perl_ithread_create(pTHX_ SV *obj, char* classname, SV* init_function, SV* params) |
379 | { |
380 | ithread* thread; |
381 | CLONE_PARAMS clone_param; |
c05ae023 |
382 | ithread* current_thread = Perl_ithread_get(aTHX); |
3b1c3273 |
383 | |
384 | SV** tmps_tmp = PL_tmps_stack; |
385 | I32 tmps_ix = PL_tmps_ix; |
d94006e8 |
386 | #ifndef WIN32 |
387 | int failure; |
388 | const char* panic = NULL; |
389 | #endif |
3b1c3273 |
390 | |
c05ae023 |
391 | |
58c2ef19 |
392 | MUTEX_LOCK(&create_destruct_mutex); |
8f77bfdb |
393 | thread = (ithread *) PerlMemShared_malloc(sizeof(ithread)); |
8043fdaf |
394 | if (!thread) { |
395 | MUTEX_UNLOCK(&create_destruct_mutex); |
396 | PerlLIO_write(PerlIO_fileno(Perl_error_log), |
397 | PL_no_mem, strlen(PL_no_mem)); |
398 | my_exit(1); |
399 | } |
68795e93 |
400 | Zero(thread,1,ithread); |
401 | thread->next = threads; |
402 | thread->prev = threads->prev; |
f42ad631 |
403 | threads->prev = thread; |
68795e93 |
404 | thread->prev->next = thread; |
405 | /* Set count to 1 immediately in case thread exits before |
406 | * we return to caller ! |
407 | */ |
408 | thread->count = 1; |
409 | MUTEX_INIT(&thread->mutex); |
410 | thread->tid = tid_counter++; |
a446a88f |
411 | thread->gimme = GIMME_V; |
4f896ddc |
412 | |
68795e93 |
413 | /* "Clone" our interpreter into the thread's interpreter |
414 | * This gives thread access to "static data" and code. |
415 | */ |
47ba8780 |
416 | |
68795e93 |
417 | PerlIO_flush((PerlIO*)NULL); |
c05ae023 |
418 | Perl_ithread_set(aTHX_ thread); |
3b1c3273 |
419 | |
9c98058e |
420 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct |
421 | value */ |
422 | PL_srand_called = FALSE; /* Set it to false so we can detect |
423 | if it gets set during the clone */ |
3b1c3273 |
424 | |
47ba8780 |
425 | #ifdef WIN32 |
68795e93 |
426 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
427 | #else |
68795e93 |
428 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
429 | #endif |
ba14dd9a |
430 | /* perl_clone leaves us in new interpreter's context. |
c8dae523 |
431 | As it is tricky to spot an implicit aTHX, create a new scope |
a446a88f |
432 | with aTHX matching the context for the duration of |
ba14dd9a |
433 | our work for new interpreter. |
434 | */ |
435 | { |
436 | dTHXa(thread->interp); |
9c98058e |
437 | |
58c2ef19 |
438 | /* Here we remove END blocks since they should only run |
62375a60 |
439 | in the thread they are created |
58c2ef19 |
440 | */ |
441 | SvREFCNT_dec(PL_endav); |
442 | PL_endav = newAV(); |
d1400e48 |
443 | clone_param.flags = 0; |
ba14dd9a |
444 | thread->init_function = sv_dup(init_function, &clone_param); |
445 | if (SvREFCNT(thread->init_function) == 0) { |
446 | SvREFCNT_inc(thread->init_function); |
d1400e48 |
447 | } |
3b1c3273 |
448 | |
449 | |
ba14dd9a |
450 | |
451 | thread->params = sv_dup(params, &clone_param); |
452 | SvREFCNT_inc(thread->params); |
3b1c3273 |
453 | |
454 | |
455 | /* The code below checks that anything living on |
456 | the tmps stack and has been cloned (so it lives in the |
457 | ptr_table) has a refcount higher than 0 |
458 | |
459 | If the refcount is 0 it means that a something on the |
460 | stack/context was holding a reference to it and |
461 | since we init_stacks() in perl_clone that won't get |
462 | cleaned and we will get a leaked scalar. |
463 | The reason it was cloned was that it lived on the |
464 | @_ stack. |
465 | |
466 | Example of this can be found in bugreport 15837 |
467 | where calls in the parameter list end up as a temp |
468 | |
469 | One could argue that this fix should be in perl_clone |
470 | */ |
471 | |
472 | |
473 | while (tmps_ix > 0) { |
474 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
475 | tmps_ix--; |
476 | if (sv && SvREFCNT(sv) == 0) { |
477 | SvREFCNT_inc(sv); |
478 | SvREFCNT_dec(sv); |
479 | } |
480 | } |
481 | |
482 | |
483 | |
ba14dd9a |
484 | SvTEMP_off(thread->init_function); |
485 | ptr_table_free(PL_ptr_table); |
486 | PL_ptr_table = NULL; |
ffb29f90 |
487 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
ba14dd9a |
488 | } |
c05ae023 |
489 | Perl_ithread_set(aTHX_ current_thread); |
68795e93 |
490 | PERL_SET_CONTEXT(aTHX); |
47ba8780 |
491 | |
68795e93 |
492 | /* Start the thread */ |
47ba8780 |
493 | |
494 | #ifdef WIN32 |
68795e93 |
495 | thread->handle = CreateThread(NULL, 0, Perl_ithread_run, |
47ba8780 |
496 | (LPVOID)thread, 0, &thread->thr); |
82c40bf6 |
497 | #else |
fa26028c |
498 | { |
499 | static pthread_attr_t attr; |
500 | static int attr_inited = 0; |
fa26028c |
501 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
502 | if (!attr_inited) { |
503 | attr_inited = 1; |
504 | pthread_attr_init(&attr); |
505 | } |
506 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
507 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
508 | # endif |
3eb37d38 |
509 | # ifdef THREAD_CREATE_NEEDS_STACK |
510 | if(pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK)) |
d94006e8 |
511 | panic = "panic: pthread_attr_setstacksize failed"; |
3eb37d38 |
512 | # endif |
513 | |
3ad0b7d6 |
514 | #ifdef OLD_PTHREADS_API |
d94006e8 |
515 | failure |
516 | = panic ? 1 : pthread_create( &thread->thr, attr, |
517 | Perl_ithread_run, (void *)thread); |
47ba8780 |
518 | #else |
58d975c3 |
519 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
47cb5ff9 |
520 | pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); |
19a077f6 |
521 | # endif |
d94006e8 |
522 | failure |
523 | = panic ? 1 : pthread_create( &thread->thr, &attr, |
524 | Perl_ithread_run, (void *)thread); |
47ba8780 |
525 | #endif |
3ad0b7d6 |
526 | } |
82c40bf6 |
527 | #endif |
62375a60 |
528 | known_threads++; |
d94006e8 |
529 | if ( |
530 | #ifdef WIN32 |
531 | thread->handle == NULL |
532 | #else |
533 | failure |
534 | #endif |
535 | ) { |
536 | MUTEX_UNLOCK(&create_destruct_mutex); |
537 | sv_2mortal(params); |
538 | Perl_ithread_destruct(aTHX_ thread, "create failed"); |
539 | #ifndef WIN32 |
540 | if (panic) |
541 | Perl_croak(aTHX_ panic); |
542 | #endif |
543 | return &PL_sv_undef; |
544 | } |
58c2ef19 |
545 | active_threads++; |
546 | MUTEX_UNLOCK(&create_destruct_mutex); |
95393226 |
547 | sv_2mortal(params); |
3b1c3273 |
548 | |
68795e93 |
549 | return ithread_to_SV(aTHX_ obj, thread, classname, FALSE); |
550 | } |
47ba8780 |
551 | |
68795e93 |
552 | SV* |
553 | Perl_ithread_self (pTHX_ SV *obj, char* Class) |
554 | { |
c05ae023 |
555 | ithread *thread = Perl_ithread_get(aTHX); |
fe53aa5b |
556 | if (thread) |
557 | return ithread_to_SV(aTHX_ obj, thread, Class, TRUE); |
558 | else |
559 | Perl_croak(aTHX_ "panic: cannot find thread data"); |
c5661c80 |
560 | return NULL; /* silence compiler warning */ |
47ba8780 |
561 | } |
562 | |
563 | /* |
e1c44605 |
564 | * Joins the thread this code needs to take the returnvalue from the |
68795e93 |
565 | * call_sv and send it back |
b1edfb69 |
566 | */ |
47ba8780 |
567 | |
68795e93 |
568 | void |
569 | Perl_ithread_CLONE(pTHX_ SV *obj) |
570 | { |
4447dfc1 |
571 | if (SvROK(obj)) { |
572 | ithread *thread = SV_to_ithread(aTHX_ obj); |
573 | } |
574 | else if (ckWARN_d(WARN_THREADS)) { |
575 | Perl_warn(aTHX_ "CLONE %" SVf,obj); |
576 | } |
47ba8780 |
577 | } |
578 | |
62375a60 |
579 | AV* |
68795e93 |
580 | Perl_ithread_join(pTHX_ SV *obj) |
581 | { |
582 | ithread *thread = SV_to_ithread(aTHX_ obj); |
583 | MUTEX_LOCK(&thread->mutex); |
62375a60 |
584 | if (thread->state & PERL_ITHR_DETACHED) { |
a446a88f |
585 | MUTEX_UNLOCK(&thread->mutex); |
586 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
587 | } |
62375a60 |
588 | else if (thread->state & PERL_ITHR_JOINED) { |
a446a88f |
589 | MUTEX_UNLOCK(&thread->mutex); |
590 | Perl_croak(aTHX_ "Thread already joined"); |
591 | } |
592 | else { |
e1c44605 |
593 | AV* retparam; |
47ba8780 |
594 | #ifdef WIN32 |
595 | DWORD waitcode; |
47ba8780 |
596 | #else |
597 | void *retval; |
47ba8780 |
598 | #endif |
47ba8780 |
599 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
600 | #ifdef WIN32 |
601 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
c7667023 |
602 | CloseHandle(thread->handle); |
603 | thread->handle = 0; |
68795e93 |
604 | #else |
605 | pthread_join(thread->thr,&retval); |
606 | #endif |
47ba8780 |
607 | MUTEX_LOCK(&thread->mutex); |
e1c44605 |
608 | |
62375a60 |
609 | /* sv_dup over the args */ |
e1c44605 |
610 | { |
1d784c90 |
611 | ithread* current_thread; |
62375a60 |
612 | AV* params = (AV*) SvRV(thread->params); |
b23f1a86 |
613 | PerlInterpreter *other_perl = thread->interp; |
e1c44605 |
614 | CLONE_PARAMS clone_params; |
3275ba96 |
615 | clone_params.stashes = newAV(); |
0405e91e |
616 | clone_params.flags |= CLONEf_JOIN_IN; |
e1c44605 |
617 | PL_ptr_table = ptr_table_new(); |
c05ae023 |
618 | current_thread = Perl_ithread_get(aTHX); |
619 | Perl_ithread_set(aTHX_ thread); |
b23f1a86 |
620 | /* ensure 'meaningful' addresses retain their meaning */ |
621 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
622 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
623 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
0405e91e |
624 | |
767c1403 |
625 | #if 0 |
0405e91e |
626 | { |
627 | I32 len = av_len(params)+1; |
628 | I32 i; |
629 | for(i = 0; i < len; i++) { |
767c1403 |
630 | sv_dump(SvRV(AvARRAY(params)[i])); |
0405e91e |
631 | } |
632 | } |
767c1403 |
633 | #endif |
e1c44605 |
634 | retparam = (AV*) sv_dup((SV*)params, &clone_params); |
b4cb676b |
635 | #if 0 |
0405e91e |
636 | { |
637 | I32 len = av_len(retparam)+1; |
638 | I32 i; |
639 | for(i = 0; i < len; i++) { |
b4cb676b |
640 | sv_dump(SvRV(AvARRAY(retparam)[i])); |
0405e91e |
641 | } |
642 | } |
b4cb676b |
643 | #endif |
c05ae023 |
644 | Perl_ithread_set(aTHX_ current_thread); |
3275ba96 |
645 | SvREFCNT_dec(clone_params.stashes); |
e1c44605 |
646 | SvREFCNT_inc(retparam); |
647 | ptr_table_free(PL_ptr_table); |
648 | PL_ptr_table = NULL; |
649 | |
650 | } |
6dfd2d05 |
651 | /* We are finished with it */ |
62375a60 |
652 | thread->state |= PERL_ITHR_JOINED; |
47ba8780 |
653 | MUTEX_UNLOCK(&thread->mutex); |
57b48062 |
654 | |
e1c44605 |
655 | return retparam; |
68795e93 |
656 | } |
e1c44605 |
657 | return (AV*)NULL; |
47ba8780 |
658 | } |
659 | |
68795e93 |
660 | void |
68795e93 |
661 | Perl_ithread_DESTROY(pTHX_ SV *sv) |
662 | { |
663 | ithread *thread = SV_to_ithread(aTHX_ sv); |
68795e93 |
664 | sv_unmagic(SvRV(sv),PERL_MAGIC_shared_scalar); |
665 | } |
8222d950 |
666 | |
73e09c8f |
667 | #endif /* USE_ITHREADS */ |
e1c44605 |
668 | |
68795e93 |
669 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
670 | PROTOTYPES: DISABLE |
8222d950 |
671 | |
73e09c8f |
672 | #ifdef USE_ITHREADS |
673 | |
68795e93 |
674 | void |
675 | ithread_new (classname, function_to_call, ...) |
676 | char * classname |
677 | SV * function_to_call |
678 | CODE: |
679 | { |
680 | AV* params = newAV(); |
681 | if (items > 2) { |
682 | int i; |
683 | for(i = 2; i < items ; i++) { |
95393226 |
684 | av_push(params, SvREFCNT_inc(ST(i))); |
68795e93 |
685 | } |
686 | } |
687 | ST(0) = sv_2mortal(Perl_ithread_create(aTHX_ Nullsv, classname, function_to_call, newRV_noinc((SV*) params))); |
688 | XSRETURN(1); |
689 | } |
8222d950 |
690 | |
68795e93 |
691 | void |
678a9b6c |
692 | ithread_list(char *classname) |
693 | PPCODE: |
694 | { |
695 | ithread *curr_thread; |
696 | MUTEX_LOCK(&create_destruct_mutex); |
697 | curr_thread = threads; |
5eb9fe8f |
698 | if(curr_thread->tid != 0) |
2379b307 |
699 | XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE))); |
678a9b6c |
700 | while(curr_thread) { |
678a9b6c |
701 | curr_thread = curr_thread->next; |
702 | if(curr_thread == threads) |
703 | break; |
6794f985 |
704 | if(curr_thread->state & PERL_ITHR_DETACHED || |
5eb9fe8f |
705 | curr_thread->state & PERL_ITHR_JOINED) |
706 | continue; |
2379b307 |
707 | XPUSHs( sv_2mortal(ithread_to_SV(aTHX_ NULL, curr_thread, classname, TRUE))); |
678a9b6c |
708 | } |
709 | MUTEX_UNLOCK(&create_destruct_mutex); |
710 | } |
711 | |
712 | |
713 | void |
68795e93 |
714 | ithread_self(char *classname) |
715 | CODE: |
716 | { |
717 | ST(0) = sv_2mortal(Perl_ithread_self(aTHX_ Nullsv,classname)); |
718 | XSRETURN(1); |
719 | } |
47ba8780 |
720 | |
721 | int |
68795e93 |
722 | ithread_tid(ithread *thread) |
47ba8780 |
723 | |
724 | void |
68795e93 |
725 | ithread_join(SV *obj) |
e1c44605 |
726 | PPCODE: |
727 | { |
728 | AV* params = Perl_ithread_join(aTHX_ obj); |
729 | int i; |
730 | I32 len = AvFILL(params); |
731 | for (i = 0; i <= len; i++) { |
1c3adb19 |
732 | SV* tmp = av_shift(params); |
733 | XPUSHs(tmp); |
734 | sv_2mortal(tmp); |
e1c44605 |
735 | } |
736 | SvREFCNT_dec(params); |
737 | } |
738 | |
f9dff5f5 |
739 | void |
9d7debe1 |
740 | yield(...) |
70f2e746 |
741 | CODE: |
742 | { |
743 | YIELD; |
744 | } |
745 | |
47ba8780 |
746 | |
747 | void |
68795e93 |
748 | ithread_detach(ithread *thread) |
47ba8780 |
749 | |
47ba8780 |
750 | void |
68795e93 |
751 | ithread_DESTROY(SV *thread) |
752 | |
73e09c8f |
753 | #endif /* USE_ITHREADS */ |
754 | |
68795e93 |
755 | BOOT: |
756 | { |
73e09c8f |
757 | #ifdef USE_ITHREADS |
68795e93 |
758 | ithread* thread; |
e1c44605 |
759 | PL_perl_destruct_level = 2; |
58c2ef19 |
760 | MUTEX_INIT(&create_destruct_mutex); |
761 | MUTEX_LOCK(&create_destruct_mutex); |
62375a60 |
762 | PL_threadhook = &Perl_ithread_hook; |
8f77bfdb |
763 | thread = (ithread *) PerlMemShared_malloc(sizeof(ithread)); |
8043fdaf |
764 | if (!thread) { |
765 | PerlLIO_write(PerlIO_fileno(Perl_error_log), |
766 | PL_no_mem, strlen(PL_no_mem)); |
767 | my_exit(1); |
768 | } |
68795e93 |
769 | Zero(thread,1,ithread); |
770 | PL_perl_destruct_level = 2; |
771 | MUTEX_INIT(&thread->mutex); |
772 | threads = thread; |
773 | thread->next = thread; |
774 | thread->prev = thread; |
775 | thread->interp = aTHX; |
6dfd2d05 |
776 | thread->count = 1; /* Immortal. */ |
68795e93 |
777 | thread->tid = tid_counter++; |
62375a60 |
778 | known_threads++; |
58c2ef19 |
779 | active_threads++; |
1fea7ed3 |
780 | thread->state = PERL_ITHR_DETACHED; |
68795e93 |
781 | #ifdef WIN32 |
782 | thread->thr = GetCurrentThreadId(); |
783 | #else |
784 | thread->thr = pthread_self(); |
785 | #endif |
62375a60 |
786 | |
c05ae023 |
787 | Perl_ithread_set(aTHX_ thread); |
58c2ef19 |
788 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
789 | #endif /* USE_ITHREADS */ |
68795e93 |
790 | } |
791 | |