Commit | Line | Data |
68795e93 |
1 | #define PERL_NO_GET_CONTEXT |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
0f1612a7 |
5 | #ifdef HAS_PPPORT_H |
6 | # define NEED_newRV_noinc |
7 | # define NEED_sv_2pv_nolen |
8 | # include "ppport.h" |
9 | # include "threads.h" |
10 | #endif |
68795e93 |
11 | |
73e09c8f |
12 | #ifdef USE_ITHREADS |
13 | |
68795e93 |
14 | #ifdef WIN32 |
fc04eb16 |
15 | # include <windows.h> |
514612b7 |
16 | /* Supposed to be in Winbase.h */ |
17 | # ifndef STACK_SIZE_PARAM_IS_A_RESERVATION |
18 | # define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000 |
19 | # endif |
fc04eb16 |
20 | # include <win32thread.h> |
68795e93 |
21 | #else |
fc04eb16 |
22 | # ifdef OS2 |
5c728af0 |
23 | typedef perl_os_thread pthread_t; |
fc04eb16 |
24 | # else |
25 | # include <pthread.h> |
26 | # endif |
27 | # include <thread.h> |
28 | # define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
29 | # ifdef OLD_PTHREADS_API |
30 | # define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
31 | # else |
32 | # define PERL_THREAD_DETACH(t) pthread_detach((t)) |
33 | # endif |
467f3f08 |
34 | #endif |
d305c2c9 |
35 | #if !defined(HAS_GETPAGESIZE) && defined(I_SYS_PARAM) |
36 | # include <sys/param.h> |
37 | #endif |
68795e93 |
38 | |
62375a60 |
39 | /* Values for 'state' member */ |
fc04eb16 |
40 | #define PERL_ITHR_JOINABLE 0 |
41 | #define PERL_ITHR_DETACHED 1 |
42 | #define PERL_ITHR_JOINED 2 |
43 | #define PERL_ITHR_FINISHED 4 |
44 | |
45 | typedef struct _ithread { |
46 | struct _ithread *next; /* Next thread in the list */ |
47 | struct _ithread *prev; /* Prev thread in the list */ |
48 | PerlInterpreter *interp; /* The threads interpreter */ |
49 | UV tid; /* Threads module's thread id */ |
50 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
9feacc09 |
51 | int count; /* How many SVs have a reference to us */ |
fc04eb16 |
52 | int state; /* Detached, joined, finished, etc. */ |
53 | int gimme; /* Context of create */ |
54 | SV *init_function; /* Code to run */ |
55 | SV *params; /* Args to pass function */ |
68795e93 |
56 | #ifdef WIN32 |
fc04eb16 |
57 | DWORD thr; /* OS's idea if thread id */ |
58 | HANDLE handle; /* OS's waitable handle */ |
68795e93 |
59 | #else |
fc04eb16 |
60 | pthread_t thr; /* OS's handle for the thread */ |
68795e93 |
61 | #endif |
514612b7 |
62 | IV stack_size; |
68795e93 |
63 | } ithread; |
64 | |
fc04eb16 |
65 | |
66 | /* Used by Perl interpreter for thread context switching */ |
628ab322 |
67 | #define MY_CXT_KEY "threads::_guts" XS_VERSION |
68 | |
69 | typedef struct { |
70 | ithread *thread; |
71 | } my_cxt_t; |
72 | |
73 | START_MY_CXT |
74 | |
75 | |
fc04eb16 |
76 | /* Linked list of all threads */ |
f4cc38af |
77 | static ithread *threads; |
68795e93 |
78 | |
fc04eb16 |
79 | /* Protects the creation and destruction of threads*/ |
80 | static perl_mutex create_destruct_mutex; |
68795e93 |
81 | |
f4cc38af |
82 | static UV tid_counter = 0; |
f4cc38af |
83 | static IV active_threads = 0; |
514612b7 |
84 | #ifdef THREAD_CREATE_NEEDS_STACK |
85 | static IV default_stack_size = THREAD_CREATE_NEEDS_STACK; |
86 | #else |
87 | static IV default_stack_size = 0; |
88 | #endif |
89 | static IV page_size = 0; |
c05ae023 |
90 | |
91 | |
fc04eb16 |
92 | /* Used by Perl interpreter for thread context switching */ |
f4cc38af |
93 | static void |
fc04eb16 |
94 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
95 | { |
628ab322 |
96 | dMY_CXT; |
97 | MY_CXT.thread = thread; |
c05ae023 |
98 | } |
99 | |
fc04eb16 |
100 | static ithread * |
101 | S_ithread_get(pTHX) |
102 | { |
628ab322 |
103 | dMY_CXT; |
fc04eb16 |
104 | return (MY_CXT.thread); |
c05ae023 |
105 | } |
106 | |
107 | |
fc04eb16 |
108 | /* Free any data (such as the Perl interpreter) attached to an ithread |
109 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
110 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
111 | */ |
2e676467 |
112 | static void |
fc04eb16 |
113 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
114 | { |
115 | PerlInterpreter *interp; |
fc04eb16 |
116 | |
2e676467 |
117 | assert(thread->state & PERL_ITHR_FINISHED && |
f2cba68d |
118 | thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
2e676467 |
119 | |
120 | interp = thread->interp; |
121 | if (interp) { |
fc04eb16 |
122 | dTHXa(interp); |
123 | |
124 | PERL_SET_CONTEXT(interp); |
125 | S_ithread_set(aTHX_ thread); |
f2cba68d |
126 | |
fc04eb16 |
127 | SvREFCNT_dec(thread->params); |
128 | thread->params = Nullsv; |
2e676467 |
129 | |
fc04eb16 |
130 | perl_destruct(interp); |
131 | thread->interp = NULL; |
2e676467 |
132 | } |
133 | if (interp) |
fc04eb16 |
134 | perl_free(interp); |
135 | |
2e676467 |
136 | PERL_SET_CONTEXT(aTHX); |
137 | } |
138 | |
68795e93 |
139 | |
fc04eb16 |
140 | /* Free an ithread structure and any attached data if its count == 0 */ |
bcd9ca9b |
141 | static void |
fc04eb16 |
142 | S_ithread_destruct(pTHX_ ithread *thread) |
68795e93 |
143 | { |
385d56e4 |
144 | #ifdef WIN32 |
fc04eb16 |
145 | HANDLE handle; |
385d56e4 |
146 | #endif |
147 | |
fc04eb16 |
148 | MUTEX_LOCK(&thread->mutex); |
bcd9ca9b |
149 | |
fc04eb16 |
150 | /* Thread is still in use */ |
151 | if (thread->count != 0) { |
152 | MUTEX_UNLOCK(&thread->mutex); |
153 | return; |
154 | } |
9feacc09 |
155 | |
fc04eb16 |
156 | MUTEX_LOCK(&create_destruct_mutex); |
157 | /* Main thread (0) is immortal and should never get here */ |
158 | assert(thread->tid != 0); |
159 | |
160 | /* Remove from circular list of threads */ |
161 | thread->next->prev = thread->prev; |
162 | thread->prev->next = thread->next; |
163 | thread->next = NULL; |
164 | thread->prev = NULL; |
165 | MUTEX_UNLOCK(&create_destruct_mutex); |
c2f2a82b |
166 | |
fc04eb16 |
167 | /* Thread is now disowned */ |
168 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
169 | |
170 | #ifdef WIN32 |
fc04eb16 |
171 | handle = thread->handle; |
172 | thread->handle = NULL; |
385d56e4 |
173 | #endif |
fc04eb16 |
174 | MUTEX_UNLOCK(&thread->mutex); |
175 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
176 | |
c7667023 |
177 | #ifdef WIN32 |
fc04eb16 |
178 | if (handle) |
179 | CloseHandle(handle); |
c7667023 |
180 | #endif |
385d56e4 |
181 | |
fc04eb16 |
182 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
183 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
184 | */ |
185 | aTHX = PL_curinterp; |
186 | PerlMemShared_free(thread); |
68795e93 |
187 | } |
188 | |
fc04eb16 |
189 | |
190 | /* Called on exit */ |
62375a60 |
191 | int |
192 | Perl_ithread_hook(pTHX) |
193 | { |
194 | int veto_cleanup = 0; |
195 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
196 | if ((aTHX == PL_curinterp) && (active_threads != 1)) { |
197 | if (ckWARN_d(WARN_THREADS)) { |
198 | Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running", active_threads); |
199 | } |
200 | veto_cleanup = 1; |
62375a60 |
201 | } |
202 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
203 | return (veto_cleanup); |
62375a60 |
204 | } |
205 | |
68795e93 |
206 | |
207 | /* MAGIC (in mg.h sense) hooks */ |
208 | |
209 | int |
210 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
211 | { |
fc04eb16 |
212 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
213 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
214 | SvIOK_on(sv); |
fc04eb16 |
215 | return (0); |
68795e93 |
216 | } |
217 | |
218 | int |
219 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
220 | { |
f2cba68d |
221 | ithread *thread = (ithread *)mg->mg_ptr; |
222 | int cleanup; |
223 | |
68795e93 |
224 | MUTEX_LOCK(&thread->mutex); |
f2cba68d |
225 | cleanup = ((--thread->count == 0) && |
226 | (thread->state & PERL_ITHR_FINISHED) && |
227 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
228 | MUTEX_UNLOCK(&thread->mutex); |
229 | |
230 | if (cleanup) |
231 | S_ithread_destruct(aTHX_ thread); |
fc04eb16 |
232 | return (0); |
68795e93 |
233 | } |
234 | |
235 | int |
236 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
237 | { |
fc04eb16 |
238 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
239 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
240 | thread->count++; |
241 | MUTEX_UNLOCK(&thread->mutex); |
fc04eb16 |
242 | return (0); |
68795e93 |
243 | } |
244 | |
245 | MGVTBL ithread_vtbl = { |
fc04eb16 |
246 | ithread_mg_get, /* get */ |
247 | 0, /* set */ |
248 | 0, /* len */ |
249 | 0, /* clear */ |
250 | ithread_mg_free, /* free */ |
251 | 0, /* copy */ |
252 | ithread_mg_dup /* dup */ |
68795e93 |
253 | }; |
254 | |
47ba8780 |
255 | |
514612b7 |
256 | /* Provided default, minimum and rational stack sizes */ |
257 | static IV |
258 | good_stack_size(pTHX_ IV stack_size) |
259 | { |
260 | /* Use default stack size if no stack size specified */ |
261 | if (! stack_size) |
262 | return (default_stack_size); |
263 | |
264 | #ifdef PTHREAD_STACK_MIN |
265 | /* Can't use less than minimum */ |
266 | if (stack_size < PTHREAD_STACK_MIN) { |
267 | if (ckWARN_d(WARN_THREADS)) { |
268 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
269 | } |
270 | return (PTHREAD_STACK_MIN); |
271 | } |
272 | #endif |
273 | |
274 | /* Round up to page size boundary */ |
275 | if (page_size <= 0) { |
d305c2c9 |
276 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
277 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
278 | # ifdef _SC_PAGESIZE |
514612b7 |
279 | page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
280 | # else |
514612b7 |
281 | page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
282 | # endif |
514612b7 |
283 | if ((long)page_size < 0) { |
284 | if (errno) { |
285 | SV * const error = get_sv("@", FALSE); |
286 | (void)SvUPGRADE(error, SVt_PV); |
287 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
288 | } else { |
289 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
290 | } |
291 | } |
d305c2c9 |
292 | #else |
293 | # ifdef HAS_GETPAGESIZE |
514612b7 |
294 | page_size = getpagesize(); |
514612b7 |
295 | # else |
d305c2c9 |
296 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
297 | page_size = PAGESIZE; |
298 | # else |
514612b7 |
299 | page_size = 8192; /* A conservative default */ |
d305c2c9 |
300 | # endif |
514612b7 |
301 | # endif |
d305c2c9 |
302 | if (page_size <= 0) |
303 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)page_size); |
514612b7 |
304 | #endif |
305 | } |
306 | stack_size = ((stack_size + (page_size - 1)) / page_size) * page_size; |
307 | |
308 | return (stack_size); |
309 | } |
310 | |
311 | |
fc04eb16 |
312 | /* Starts executing the thread. |
313 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
314 | */ |
47ba8780 |
315 | #ifdef WIN32 |
f4cc38af |
316 | static THREAD_RET_TYPE |
fc04eb16 |
317 | S_ithread_run(LPVOID arg) |
47ba8780 |
318 | #else |
fc04eb16 |
319 | static void * |
320 | S_ithread_run(void * arg) |
47ba8780 |
321 | #endif |
fc04eb16 |
322 | { |
323 | ithread *thread = (ithread *)arg; |
324 | int cleanup; |
f2cba68d |
325 | |
fc04eb16 |
326 | dTHXa(thread->interp); |
327 | PERL_SET_CONTEXT(thread->interp); |
328 | S_ithread_set(aTHX_ thread); |
47ba8780 |
329 | |
68795e93 |
330 | #if 0 |
fc04eb16 |
331 | /* Far from clear messing with ->thr child-side is a good idea */ |
332 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
333 | #ifdef WIN32 |
fc04eb16 |
334 | thread->thr = GetCurrentThreadId(); |
47ba8780 |
335 | #else |
fc04eb16 |
336 | thread->thr = pthread_self(); |
47ba8780 |
337 | #endif |
fc04eb16 |
338 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
339 | #endif |
47ba8780 |
340 | |
fc04eb16 |
341 | PL_perl_destruct_level = 2; |
f2cba68d |
342 | |
fc04eb16 |
343 | { |
344 | AV *params = (AV *)SvRV(thread->params); |
345 | int len = (int)av_len(params)+1; |
346 | int ii; |
347 | |
348 | dSP; |
349 | ENTER; |
350 | SAVETMPS; |
351 | |
352 | /* Put args on the stack */ |
353 | PUSHMARK(SP); |
354 | for (ii=0; ii < len; ii++) { |
355 | XPUSHs(av_shift(params)); |
356 | } |
357 | PUTBACK; |
358 | |
359 | /* Run the specified function */ |
360 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
361 | |
362 | /* Remove args from stack and put back in params array */ |
363 | SPAGAIN; |
364 | for (ii=len-1; ii >= 0; ii--) { |
365 | SV *sv = POPs; |
366 | av_store(params, ii, SvREFCNT_inc(sv)); |
367 | } |
368 | |
369 | /* Check for failure */ |
370 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
c0003851 |
371 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
fc04eb16 |
372 | } |
373 | |
374 | FREETMPS; |
375 | LEAVE; |
376 | |
377 | /* Release function ref */ |
378 | SvREFCNT_dec(thread->init_function); |
379 | thread->init_function = Nullsv; |
380 | } |
62375a60 |
381 | |
fc04eb16 |
382 | PerlIO_flush((PerlIO *)NULL); |
383 | |
384 | MUTEX_LOCK(&thread->mutex); |
385 | /* Mark as finished */ |
386 | thread->state |= PERL_ITHR_FINISHED; |
387 | /* Cleanup if detached */ |
388 | cleanup = (thread->state & PERL_ITHR_DETACHED); |
389 | MUTEX_UNLOCK(&thread->mutex); |
390 | |
391 | if (cleanup) |
392 | S_ithread_destruct(aTHX_ thread); |
393 | |
394 | MUTEX_LOCK(&create_destruct_mutex); |
395 | active_threads--; |
396 | MUTEX_UNLOCK(&create_destruct_mutex); |
91604d21 |
397 | |
47ba8780 |
398 | #ifdef WIN32 |
fc04eb16 |
399 | return ((DWORD)0); |
e8f2bb9a |
400 | #else |
fc04eb16 |
401 | return (0); |
47ba8780 |
402 | #endif |
68795e93 |
403 | } |
404 | |
fc04eb16 |
405 | |
406 | /* Type conversion helper functions */ |
f4cc38af |
407 | static SV * |
68795e93 |
408 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
409 | { |
410 | SV *sv; |
411 | MAGIC *mg; |
fc04eb16 |
412 | |
68795e93 |
413 | if (inc) { |
fc04eb16 |
414 | MUTEX_LOCK(&thread->mutex); |
415 | thread->count++; |
416 | MUTEX_UNLOCK(&thread->mutex); |
417 | } |
418 | |
419 | if (! obj) { |
420 | obj = newSV(0); |
68795e93 |
421 | } |
fc04eb16 |
422 | |
423 | sv = newSVrv(obj, classname); |
424 | sv_setiv(sv, PTR2IV(thread)); |
425 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
426 | mg->mg_flags |= MGf_DUP; |
427 | SvREADONLY_on(sv); |
fc04eb16 |
428 | |
429 | return (obj); |
68795e93 |
430 | } |
47ba8780 |
431 | |
f4cc38af |
432 | static ithread * |
68795e93 |
433 | SV_to_ithread(pTHX_ SV *sv) |
434 | { |
fc04eb16 |
435 | /* Argument is a thread */ |
436 | if (SvROK(sv)) { |
437 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
438 | } |
439 | /* Argument is classname, therefore return current thread */ |
440 | return (S_ithread_get(aTHX)); |
47ba8780 |
441 | } |
442 | |
47ba8780 |
443 | |
fc04eb16 |
444 | /* threads->create() |
445 | * Called in context of parent thread. |
446 | */ |
f4cc38af |
447 | static SV * |
fc04eb16 |
448 | S_ithread_create( |
449 | pTHX_ SV *obj, |
450 | char *classname, |
451 | SV *init_function, |
514612b7 |
452 | IV stack_size, |
fc04eb16 |
453 | SV *params) |
68795e93 |
454 | { |
fc04eb16 |
455 | ithread *thread; |
456 | CLONE_PARAMS clone_param; |
457 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
458 | |
fc04eb16 |
459 | SV **tmps_tmp = PL_tmps_stack; |
460 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
461 | #ifndef WIN32 |
fc04eb16 |
462 | int rc_stack_size = 0; |
463 | int rc_thread_create = 0; |
d94006e8 |
464 | #endif |
3b1c3273 |
465 | |
fc04eb16 |
466 | MUTEX_LOCK(&create_destruct_mutex); |
467 | |
468 | /* Allocate thread structure */ |
469 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
470 | if (!thread) { |
471 | MUTEX_UNLOCK(&create_destruct_mutex); |
472 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
473 | my_exit(1); |
474 | } |
475 | Zero(thread, 1, ithread); |
476 | |
477 | /* Add to threads list */ |
478 | thread->next = threads; |
479 | thread->prev = threads->prev; |
480 | threads->prev = thread; |
481 | thread->prev->next = thread; |
c05ae023 |
482 | |
fc04eb16 |
483 | /* Set count to 1 immediately in case thread exits before |
484 | * we return to caller! |
485 | */ |
486 | thread->count = 1; |
487 | |
488 | MUTEX_INIT(&thread->mutex); |
489 | thread->tid = tid_counter++; |
514612b7 |
490 | thread->stack_size = good_stack_size(aTHX_ stack_size); |
fc04eb16 |
491 | thread->gimme = GIMME_V; |
492 | |
493 | /* "Clone" our interpreter into the thread's interpreter. |
494 | * This gives thread access to "static data" and code. |
495 | */ |
496 | PerlIO_flush((PerlIO *)NULL); |
497 | S_ithread_set(aTHX_ thread); |
498 | |
499 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
500 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
501 | set during the clone */ |
3b1c3273 |
502 | |
47ba8780 |
503 | #ifdef WIN32 |
fc04eb16 |
504 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
505 | #else |
fc04eb16 |
506 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
507 | #endif |
47ba8780 |
508 | |
fc04eb16 |
509 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
510 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
511 | * context for the duration of our work for new interpreter. |
512 | */ |
513 | { |
514 | dTHXa(thread->interp); |
515 | |
516 | MY_CXT_CLONE; |
517 | |
518 | /* Here we remove END blocks since they should only run in the thread |
519 | * they are created |
520 | */ |
521 | SvREFCNT_dec(PL_endav); |
522 | PL_endav = newAV(); |
523 | clone_param.flags = 0; |
524 | thread->init_function = sv_dup(init_function, &clone_param); |
525 | if (SvREFCNT(thread->init_function) == 0) { |
526 | SvREFCNT_inc(thread->init_function); |
527 | } |
528 | |
529 | thread->params = sv_dup(params, &clone_param); |
530 | SvREFCNT_inc(thread->params); |
531 | |
532 | /* The code below checks that anything living on the tmps stack and |
533 | * has been cloned (so it lives in the ptr_table) has a refcount |
534 | * higher than 0. |
535 | * |
536 | * If the refcount is 0 it means that a something on the stack/context |
537 | * was holding a reference to it and since we init_stacks() in |
538 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
539 | * The reason it was cloned was that it lived on the @_ stack. |
540 | * |
541 | * Example of this can be found in bugreport 15837 where calls in the |
542 | * parameter list end up as a temp. |
543 | * |
544 | * One could argue that this fix should be in perl_clone. |
545 | */ |
546 | while (tmps_ix > 0) { |
547 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
548 | tmps_ix--; |
549 | if (sv && SvREFCNT(sv) == 0) { |
550 | SvREFCNT_inc(sv); |
551 | SvREFCNT_dec(sv); |
552 | } |
553 | } |
554 | |
555 | SvTEMP_off(thread->init_function); |
556 | ptr_table_free(PL_ptr_table); |
557 | PL_ptr_table = NULL; |
558 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
559 | } |
560 | S_ithread_set(aTHX_ current_thread); |
561 | PERL_SET_CONTEXT(aTHX); |
562 | |
563 | /* Create/start the thread */ |
47ba8780 |
564 | #ifdef WIN32 |
fc04eb16 |
565 | thread->handle = CreateThread(NULL, |
514612b7 |
566 | (DWORD)thread->stack_size, |
fc04eb16 |
567 | S_ithread_run, |
568 | (LPVOID)thread, |
514612b7 |
569 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
570 | &thread->thr); |
82c40bf6 |
571 | #else |
fc04eb16 |
572 | { |
573 | static pthread_attr_t attr; |
574 | static int attr_inited = 0; |
575 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
576 | if (! attr_inited) { |
577 | pthread_attr_init(&attr); |
578 | attr_inited = 1; |
579 | } |
580 | |
fa26028c |
581 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
582 | /* Threads start out joinable */ |
583 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
584 | # endif |
fc04eb16 |
585 | |
514612b7 |
586 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
587 | /* Set thread's stack size */ |
514612b7 |
588 | if (thread->stack_size > 0) { |
589 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
590 | } |
3eb37d38 |
591 | # endif |
592 | |
fc04eb16 |
593 | /* Create the thread */ |
594 | if (! rc_stack_size) { |
595 | # ifdef OLD_PTHREADS_API |
596 | rc_thread_create = pthread_create(&thread->thr, |
597 | attr, |
598 | S_ithread_run, |
599 | (void *)thread); |
600 | # else |
601 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
602 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
603 | # endif |
604 | rc_thread_create = pthread_create(&thread->thr, |
605 | &attr, |
606 | S_ithread_run, |
607 | (void *)thread); |
19a077f6 |
608 | # endif |
fc04eb16 |
609 | } |
514612b7 |
610 | |
611 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
612 | /* Try to get thread's actual stack size */ |
613 | { |
614 | size_t stacksize; |
615 | if (! pthread_attr_getstacksize(&attr, &stacksize)) { |
616 | if (stacksize) { |
617 | thread->stack_size = (IV)stacksize; |
618 | } |
619 | } |
620 | } |
621 | # endif |
fc04eb16 |
622 | } |
82c40bf6 |
623 | #endif |
bcd9ca9b |
624 | |
fc04eb16 |
625 | /* Check for errors */ |
d94006e8 |
626 | #ifdef WIN32 |
fc04eb16 |
627 | if (thread->handle == NULL) { |
d94006e8 |
628 | #else |
fc04eb16 |
629 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
630 | #endif |
fc04eb16 |
631 | MUTEX_UNLOCK(&create_destruct_mutex); |
632 | sv_2mortal(params); |
633 | S_ithread_destruct(aTHX_ thread); |
d94006e8 |
634 | #ifndef WIN32 |
514612b7 |
635 | if (ckWARN_d(WARN_THREADS)) { |
636 | if (rc_stack_size) |
637 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
638 | else |
639 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
640 | } |
d94006e8 |
641 | #endif |
fc04eb16 |
642 | return (&PL_sv_undef); |
643 | } |
644 | |
645 | active_threads++; |
646 | MUTEX_UNLOCK(&create_destruct_mutex); |
647 | |
648 | sv_2mortal(params); |
3b1c3273 |
649 | |
fc04eb16 |
650 | return (ithread_to_SV(aTHX_ obj, thread, classname, FALSE)); |
68795e93 |
651 | } |
47ba8780 |
652 | |
73e09c8f |
653 | #endif /* USE_ITHREADS */ |
e1c44605 |
654 | |
fcea4b7c |
655 | |
fc04eb16 |
656 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
657 | PROTOTYPES: DISABLE |
8222d950 |
658 | |
73e09c8f |
659 | #ifdef USE_ITHREADS |
660 | |
68795e93 |
661 | void |
f4cc38af |
662 | ithread_create(...) |
663 | PREINIT: |
664 | char *classname; |
514612b7 |
665 | ithread *thread; |
f4cc38af |
666 | SV *function_to_call; |
667 | AV *params; |
514612b7 |
668 | HV *specs; |
669 | IV stack_size; |
670 | int idx; |
f4cc38af |
671 | int ii; |
672 | CODE: |
514612b7 |
673 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
674 | if (--items < 2) |
675 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
676 | specs = (HV*)SvRV(ST(1)); |
677 | idx = 1; |
678 | } else { |
679 | if (items < 2) |
680 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
681 | specs = NULL; |
682 | idx = 0; |
683 | } |
f4cc38af |
684 | |
514612b7 |
685 | if (sv_isobject(ST(0))) { |
686 | /* $thr->create() */ |
687 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
688 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
689 | stack_size = thread->stack_size; |
690 | } else { |
691 | /* threads->create() */ |
692 | classname = (char *)SvPV_nolen(ST(0)); |
693 | stack_size = default_stack_size; |
694 | } |
695 | |
696 | function_to_call = ST(idx+1); |
697 | |
698 | if (specs) { |
699 | /* stack_size */ |
700 | if (hv_exists(specs, "stack", 5)) { |
701 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
702 | } else if (hv_exists(specs, "stacksize", 9)) { |
703 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
704 | } else if (hv_exists(specs, "stack_size", 10)) { |
705 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
706 | } |
707 | } |
f4cc38af |
708 | |
709 | /* Function args */ |
710 | params = newAV(); |
711 | if (items > 2) { |
514612b7 |
712 | for (ii=2; ii < items ; ii++) { |
713 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
714 | } |
715 | } |
716 | |
717 | /* Create thread */ |
bcd9ca9b |
718 | ST(0) = sv_2mortal(S_ithread_create(aTHX_ Nullsv, |
514612b7 |
719 | classname, |
720 | function_to_call, |
721 | stack_size, |
722 | newRV_noinc((SV*)params))); |
f4cc38af |
723 | /* XSRETURN(1); - implied */ |
724 | |
8222d950 |
725 | |
68795e93 |
726 | void |
f4cc38af |
727 | ithread_list(...) |
728 | PREINIT: |
729 | char *classname; |
fc04eb16 |
730 | ithread *thread; |
f4cc38af |
731 | int list_context; |
732 | IV count = 0; |
733 | PPCODE: |
734 | /* Class method only */ |
735 | if (SvROK(ST(0))) |
736 | Perl_croak(aTHX_ "Usage: threads->list()"); |
737 | classname = (char *)SvPV_nolen(ST(0)); |
738 | |
739 | /* Calling context */ |
740 | list_context = (GIMME_V == G_ARRAY); |
741 | |
742 | /* Walk through threads list */ |
743 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
744 | for (thread = threads->next; |
745 | thread != threads; |
746 | thread = thread->next) |
f4cc38af |
747 | { |
748 | /* Ignore detached or joined threads */ |
fc04eb16 |
749 | if (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)) { |
f4cc38af |
750 | continue; |
751 | } |
752 | /* Push object on stack if list context */ |
753 | if (list_context) { |
fc04eb16 |
754 | XPUSHs(sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
755 | } |
756 | count++; |
757 | } |
758 | MUTEX_UNLOCK(&create_destruct_mutex); |
759 | /* If scalar context, send back count */ |
760 | if (! list_context) { |
761 | XSRETURN_IV(count); |
762 | } |
678a9b6c |
763 | |
764 | |
765 | void |
f4cc38af |
766 | ithread_self(...) |
767 | PREINIT: |
768 | char *classname; |
fcea4b7c |
769 | ithread *thread; |
f4cc38af |
770 | CODE: |
771 | /* Class method only */ |
772 | if (SvROK(ST(0))) |
773 | Perl_croak(aTHX_ "Usage: threads->self()"); |
774 | classname = (char *)SvPV_nolen(ST(0)); |
775 | |
fcea4b7c |
776 | thread = S_ithread_get(aTHX); |
777 | |
778 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
779 | /* XSRETURN(1); - implied */ |
47ba8780 |
780 | |
47ba8780 |
781 | |
782 | void |
f4cc38af |
783 | ithread_tid(...) |
784 | PREINIT: |
785 | ithread *thread; |
786 | CODE: |
787 | thread = SV_to_ithread(aTHX_ ST(0)); |
788 | XST_mUV(0, thread->tid); |
789 | /* XSRETURN(1); - implied */ |
790 | |
e1c44605 |
791 | |
f9dff5f5 |
792 | void |
f4cc38af |
793 | ithread_join(...) |
794 | PREINIT: |
fcea4b7c |
795 | ithread *thread; |
796 | int join_err; |
f4cc38af |
797 | AV *params; |
798 | int len; |
799 | int ii; |
fcea4b7c |
800 | #ifdef WIN32 |
801 | DWORD waitcode; |
802 | #else |
803 | void *retval; |
804 | #endif |
f4cc38af |
805 | PPCODE: |
806 | /* Object method only */ |
807 | if (! sv_isobject(ST(0))) |
808 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
809 | |
fcea4b7c |
810 | /* Check if the thread is joinable */ |
811 | thread = SV_to_ithread(aTHX_ ST(0)); |
812 | MUTEX_LOCK(&thread->mutex); |
813 | join_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
814 | MUTEX_UNLOCK(&thread->mutex); |
815 | if (join_err) { |
816 | if (join_err & PERL_ITHR_DETACHED) { |
817 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
818 | } else { |
819 | Perl_croak(aTHX_ "Thread already joined"); |
820 | } |
821 | } |
822 | |
823 | /* Join the thread */ |
824 | #ifdef WIN32 |
825 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
826 | #else |
827 | pthread_join(thread->thr, &retval); |
828 | #endif |
829 | |
830 | MUTEX_LOCK(&thread->mutex); |
831 | /* Mark as joined */ |
832 | thread->state |= PERL_ITHR_JOINED; |
833 | |
834 | /* Get the return value from the call_sv */ |
835 | { |
836 | AV *params_copy; |
837 | PerlInterpreter *other_perl; |
838 | CLONE_PARAMS clone_params; |
839 | ithread *current_thread; |
840 | |
841 | params_copy = (AV *)SvRV(thread->params); |
842 | other_perl = thread->interp; |
843 | clone_params.stashes = newAV(); |
844 | clone_params.flags = CLONEf_JOIN_IN; |
845 | PL_ptr_table = ptr_table_new(); |
846 | current_thread = S_ithread_get(aTHX); |
847 | S_ithread_set(aTHX_ thread); |
848 | /* Ensure 'meaningful' addresses retain their meaning */ |
849 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
850 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
851 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
852 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
853 | S_ithread_set(aTHX_ current_thread); |
854 | SvREFCNT_dec(clone_params.stashes); |
855 | SvREFCNT_inc(params); |
856 | ptr_table_free(PL_ptr_table); |
857 | PL_ptr_table = NULL; |
858 | } |
859 | |
860 | /* We are finished with the thread */ |
861 | S_ithread_clear(aTHX_ thread); |
862 | MUTEX_UNLOCK(&thread->mutex); |
863 | |
864 | /* If no return values, then just return */ |
f4cc38af |
865 | if (! params) { |
866 | XSRETURN_UNDEF; |
867 | } |
868 | |
869 | /* Put return values on stack */ |
870 | len = (int)AvFILL(params); |
871 | for (ii=0; ii <= len; ii++) { |
872 | SV* param = av_shift(params); |
873 | XPUSHs(sv_2mortal(param)); |
874 | } |
875 | |
876 | /* Free return value array */ |
877 | SvREFCNT_dec(params); |
878 | |
879 | |
880 | void |
881 | ithread_yield(...) |
882 | CODE: |
883 | YIELD; |
884 | |
885 | |
886 | void |
887 | ithread_detach(...) |
888 | PREINIT: |
889 | ithread *thread; |
fcea4b7c |
890 | int detach_err; |
891 | int cleanup; |
f4cc38af |
892 | CODE: |
893 | thread = SV_to_ithread(aTHX_ ST(0)); |
fcea4b7c |
894 | MUTEX_LOCK(&thread->mutex); |
895 | |
896 | /* Check if the thread is detachable */ |
897 | if ((detach_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)))) { |
898 | MUTEX_UNLOCK(&thread->mutex); |
899 | if (detach_err & PERL_ITHR_DETACHED) { |
900 | Perl_croak(aTHX_ "Thread already detached"); |
901 | } else { |
902 | Perl_croak(aTHX_ "Cannot detach a joined thread"); |
903 | } |
904 | } |
905 | |
906 | /* Detach the thread */ |
907 | thread->state |= PERL_ITHR_DETACHED; |
908 | #ifdef WIN32 |
909 | /* Windows has no 'detach thread' function */ |
910 | #else |
911 | PERL_THREAD_DETACH(thread->thr); |
912 | #endif |
913 | /* Cleanup if finished */ |
914 | cleanup = (thread->state & PERL_ITHR_FINISHED); |
915 | MUTEX_UNLOCK(&thread->mutex); |
916 | |
917 | if (cleanup) |
918 | S_ithread_destruct(aTHX_ thread); |
f4cc38af |
919 | |
47ba8780 |
920 | |
921 | void |
c0003851 |
922 | ithread_kill(...) |
923 | PREINIT: |
924 | ithread *thread; |
925 | char *sig_name; |
926 | IV signal; |
927 | CODE: |
928 | /* Must have safe signals */ |
929 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
930 | Perl_croak(aTHX_ "Cannot signal other threads without safe signals"); |
931 | |
932 | /* Object method only */ |
933 | if (! sv_isobject(ST(0))) |
934 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
935 | |
936 | /* Get thread */ |
937 | thread = SV_to_ithread(aTHX_ ST(0)); |
938 | |
939 | /* Get signal */ |
940 | sig_name = SvPV_nolen(ST(1)); |
941 | if (isALPHA(*sig_name)) { |
942 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') |
943 | sig_name += 3; |
944 | if ((signal = Perl_whichsig(aTHX_ sig_name)) < 0) |
945 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
946 | } else |
947 | signal = SvIV(ST(1)); |
948 | |
949 | /* Set the signal for the thread */ |
950 | { |
951 | dTHXa(thread->interp); |
952 | PL_psig_pend[signal]++; |
953 | PL_sig_pending = 1; |
954 | } |
955 | |
956 | /* Return the thread to allow for method chaining */ |
957 | ST(0) = ST(0); |
958 | /* XSRETURN(1); - implied */ |
959 | |
960 | |
961 | void |
f4cc38af |
962 | ithread_DESTROY(...) |
963 | CODE: |
fcea4b7c |
964 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
965 | |
966 | |
967 | void |
968 | ithread_equal(...) |
fc04eb16 |
969 | PREINIT: |
970 | int are_equal = 0; |
f4cc38af |
971 | CODE: |
fc04eb16 |
972 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
973 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
974 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
975 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
976 | are_equal = (thr1->tid == thr2->tid); |
977 | } |
978 | if (are_equal) { |
979 | XST_mYES(0); |
f4cc38af |
980 | } else { |
fc04eb16 |
981 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
982 | XST_mIV(0, 0); |
983 | } |
984 | /* XSRETURN(1); - implied */ |
985 | |
47ba8780 |
986 | |
47ba8780 |
987 | void |
f4cc38af |
988 | ithread_object(...) |
989 | PREINIT: |
990 | char *classname; |
991 | UV tid; |
fc04eb16 |
992 | ithread *thread; |
f4cc38af |
993 | int found = 0; |
994 | CODE: |
995 | /* Class method only */ |
996 | if (SvROK(ST(0))) |
997 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
998 | classname = (char *)SvPV_nolen(ST(0)); |
999 | |
1000 | if ((items < 2) || ! SvOK(ST(1))) { |
1001 | XSRETURN_UNDEF; |
1002 | } |
1003 | |
fc04eb16 |
1004 | /* threads->object($tid) */ |
f4cc38af |
1005 | tid = SvUV(ST(1)); |
1006 | |
1007 | /* Walk through threads list */ |
1008 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
1009 | for (thread = threads->next; |
1010 | thread != threads; |
1011 | thread = thread->next) |
f4cc38af |
1012 | { |
1013 | /* Look for TID, but ignore detached or joined threads */ |
fc04eb16 |
1014 | if ((thread->tid != tid) || |
1015 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
f4cc38af |
1016 | { |
1017 | continue; |
1018 | } |
1019 | /* Put object on stack */ |
fc04eb16 |
1020 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1021 | found = 1; |
1022 | break; |
1023 | } |
1024 | MUTEX_UNLOCK(&create_destruct_mutex); |
1025 | if (! found) { |
1026 | XSRETURN_UNDEF; |
1027 | } |
1028 | /* XSRETURN(1); - implied */ |
1029 | |
1030 | |
1031 | void |
1032 | ithread__handle(...); |
1033 | PREINIT: |
1034 | ithread *thread; |
1035 | CODE: |
1036 | thread = SV_to_ithread(aTHX_ ST(0)); |
1037 | #ifdef WIN32 |
fcea4b7c |
1038 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1039 | #else |
75ba4ae2 |
1040 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1041 | #endif |
1042 | /* XSRETURN(1); - implied */ |
68795e93 |
1043 | |
514612b7 |
1044 | |
1045 | void |
1046 | ithread_get_stack_size(...) |
1047 | PREINIT: |
1048 | IV stack_size; |
1049 | CODE: |
1050 | if (sv_isobject(ST(0))) { |
1051 | /* $thr->get_stack_size() */ |
1052 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1053 | stack_size = thread->stack_size; |
1054 | } else { |
1055 | /* threads->get_stack_size() */ |
1056 | stack_size = default_stack_size; |
1057 | } |
1058 | XST_mIV(0, stack_size); |
1059 | /* XSRETURN(1); - implied */ |
1060 | |
1061 | |
1062 | void |
1063 | ithread_set_stack_size(...) |
1064 | PREINIT: |
1065 | IV old_size; |
1066 | CODE: |
1067 | if (items != 2) |
1068 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
1069 | if (sv_isobject(ST(0))) |
1070 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
1071 | |
1072 | old_size = default_stack_size; |
1073 | default_stack_size = good_stack_size(aTHX_ SvIV(ST(1))); |
1074 | XST_mIV(0, old_size); |
1075 | /* XSRETURN(1); - implied */ |
1076 | |
73e09c8f |
1077 | #endif /* USE_ITHREADS */ |
1078 | |
fc04eb16 |
1079 | |
68795e93 |
1080 | BOOT: |
1081 | { |
73e09c8f |
1082 | #ifdef USE_ITHREADS |
fc04eb16 |
1083 | /* The 'main' thread is thread 0. |
1084 | * It is detached (unjoinable) and immortal. |
1085 | */ |
62375a60 |
1086 | |
fc04eb16 |
1087 | ithread *thread; |
1088 | MY_CXT_INIT; |
1089 | |
1090 | PL_perl_destruct_level = 2; |
1091 | MUTEX_INIT(&create_destruct_mutex); |
1092 | MUTEX_LOCK(&create_destruct_mutex); |
1093 | |
1094 | PL_threadhook = &Perl_ithread_hook; |
1095 | |
1096 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
1097 | if (! thread) { |
1098 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
1099 | my_exit(1); |
1100 | } |
1101 | Zero(thread, 1, ithread); |
1102 | |
1103 | PL_perl_destruct_level = 2; |
1104 | MUTEX_INIT(&thread->mutex); |
1105 | |
1106 | thread->tid = tid_counter++; /* Thread 0 */ |
1107 | |
1108 | /* Head of the threads list */ |
1109 | threads = thread; |
1110 | thread->next = thread; |
1111 | thread->prev = thread; |
1112 | |
1113 | thread->count = 1; /* Immortal */ |
1114 | |
1115 | thread->interp = aTHX; |
1116 | thread->state = PERL_ITHR_DETACHED; /* Detached */ |
514612b7 |
1117 | thread->stack_size = default_stack_size; |
fc04eb16 |
1118 | # ifdef WIN32 |
1119 | thread->thr = GetCurrentThreadId(); |
1120 | # else |
1121 | thread->thr = pthread_self(); |
1122 | # endif |
1123 | |
1124 | active_threads++; |
1125 | |
1126 | S_ithread_set(aTHX_ thread); |
1127 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
1128 | #endif /* USE_ITHREADS */ |
68795e93 |
1129 | } |