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 |
404aaa48 |
6 | # define NEED_PL_signals |
0f1612a7 |
7 | # define NEED_newRV_noinc |
8 | # define NEED_sv_2pv_nolen |
9 | # include "ppport.h" |
10 | # include "threads.h" |
11 | #endif |
68795e93 |
12 | |
73e09c8f |
13 | #ifdef USE_ITHREADS |
14 | |
68795e93 |
15 | #ifdef WIN32 |
fc04eb16 |
16 | # include <windows.h> |
514612b7 |
17 | /* Supposed to be in Winbase.h */ |
18 | # ifndef STACK_SIZE_PARAM_IS_A_RESERVATION |
19 | # define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000 |
20 | # endif |
fc04eb16 |
21 | # include <win32thread.h> |
68795e93 |
22 | #else |
fc04eb16 |
23 | # ifdef OS2 |
5c728af0 |
24 | typedef perl_os_thread pthread_t; |
fc04eb16 |
25 | # else |
26 | # include <pthread.h> |
27 | # endif |
28 | # include <thread.h> |
29 | # define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
30 | # ifdef OLD_PTHREADS_API |
31 | # define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
32 | # else |
33 | # define PERL_THREAD_DETACH(t) pthread_detach((t)) |
34 | # endif |
467f3f08 |
35 | #endif |
d305c2c9 |
36 | #if !defined(HAS_GETPAGESIZE) && defined(I_SYS_PARAM) |
37 | # include <sys/param.h> |
38 | #endif |
68795e93 |
39 | |
62375a60 |
40 | /* Values for 'state' member */ |
fc04eb16 |
41 | #define PERL_ITHR_JOINABLE 0 |
42 | #define PERL_ITHR_DETACHED 1 |
43 | #define PERL_ITHR_JOINED 2 |
44 | #define PERL_ITHR_FINISHED 4 |
45 | |
46 | typedef struct _ithread { |
47 | struct _ithread *next; /* Next thread in the list */ |
48 | struct _ithread *prev; /* Prev thread in the list */ |
49 | PerlInterpreter *interp; /* The threads interpreter */ |
50 | UV tid; /* Threads module's thread id */ |
51 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
9feacc09 |
52 | int count; /* How many SVs have a reference to us */ |
fc04eb16 |
53 | int state; /* Detached, joined, finished, etc. */ |
54 | int gimme; /* Context of create */ |
55 | SV *init_function; /* Code to run */ |
56 | SV *params; /* Args to pass function */ |
68795e93 |
57 | #ifdef WIN32 |
fc04eb16 |
58 | DWORD thr; /* OS's idea if thread id */ |
59 | HANDLE handle; /* OS's waitable handle */ |
68795e93 |
60 | #else |
fc04eb16 |
61 | pthread_t thr; /* OS's handle for the thread */ |
68795e93 |
62 | #endif |
514612b7 |
63 | IV stack_size; |
68795e93 |
64 | } ithread; |
65 | |
fc04eb16 |
66 | |
67 | /* Used by Perl interpreter for thread context switching */ |
628ab322 |
68 | #define MY_CXT_KEY "threads::_guts" XS_VERSION |
69 | |
70 | typedef struct { |
71 | ithread *thread; |
72 | } my_cxt_t; |
73 | |
74 | START_MY_CXT |
75 | |
76 | |
fc04eb16 |
77 | /* Linked list of all threads */ |
f4cc38af |
78 | static ithread *threads; |
68795e93 |
79 | |
fc04eb16 |
80 | /* Protects the creation and destruction of threads*/ |
81 | static perl_mutex create_destruct_mutex; |
68795e93 |
82 | |
f4cc38af |
83 | static UV tid_counter = 0; |
f4cc38af |
84 | static IV active_threads = 0; |
514612b7 |
85 | #ifdef THREAD_CREATE_NEEDS_STACK |
86 | static IV default_stack_size = THREAD_CREATE_NEEDS_STACK; |
87 | #else |
88 | static IV default_stack_size = 0; |
89 | #endif |
90 | static IV page_size = 0; |
c05ae023 |
91 | |
92 | |
fc04eb16 |
93 | /* Used by Perl interpreter for thread context switching */ |
f4cc38af |
94 | static void |
fc04eb16 |
95 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
96 | { |
628ab322 |
97 | dMY_CXT; |
98 | MY_CXT.thread = thread; |
c05ae023 |
99 | } |
100 | |
fc04eb16 |
101 | static ithread * |
102 | S_ithread_get(pTHX) |
103 | { |
628ab322 |
104 | dMY_CXT; |
fc04eb16 |
105 | return (MY_CXT.thread); |
c05ae023 |
106 | } |
107 | |
108 | |
fc04eb16 |
109 | /* Free any data (such as the Perl interpreter) attached to an ithread |
110 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
111 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
112 | */ |
2e676467 |
113 | static void |
fc04eb16 |
114 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
115 | { |
116 | PerlInterpreter *interp; |
fc04eb16 |
117 | |
2e676467 |
118 | assert(thread->state & PERL_ITHR_FINISHED && |
f2cba68d |
119 | thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
2e676467 |
120 | |
121 | interp = thread->interp; |
122 | if (interp) { |
fc04eb16 |
123 | dTHXa(interp); |
124 | |
125 | PERL_SET_CONTEXT(interp); |
126 | S_ithread_set(aTHX_ thread); |
f2cba68d |
127 | |
fc04eb16 |
128 | SvREFCNT_dec(thread->params); |
129 | thread->params = Nullsv; |
2e676467 |
130 | |
fc04eb16 |
131 | perl_destruct(interp); |
132 | thread->interp = NULL; |
2e676467 |
133 | } |
134 | if (interp) |
fc04eb16 |
135 | perl_free(interp); |
136 | |
2e676467 |
137 | PERL_SET_CONTEXT(aTHX); |
138 | } |
139 | |
68795e93 |
140 | |
fc04eb16 |
141 | /* Free an ithread structure and any attached data if its count == 0 */ |
bcd9ca9b |
142 | static void |
fc04eb16 |
143 | S_ithread_destruct(pTHX_ ithread *thread) |
68795e93 |
144 | { |
385d56e4 |
145 | #ifdef WIN32 |
fc04eb16 |
146 | HANDLE handle; |
385d56e4 |
147 | #endif |
148 | |
fc04eb16 |
149 | MUTEX_LOCK(&thread->mutex); |
bcd9ca9b |
150 | |
fc04eb16 |
151 | /* Thread is still in use */ |
152 | if (thread->count != 0) { |
153 | MUTEX_UNLOCK(&thread->mutex); |
154 | return; |
155 | } |
9feacc09 |
156 | |
fc04eb16 |
157 | MUTEX_LOCK(&create_destruct_mutex); |
158 | /* Main thread (0) is immortal and should never get here */ |
159 | assert(thread->tid != 0); |
160 | |
161 | /* Remove from circular list of threads */ |
162 | thread->next->prev = thread->prev; |
163 | thread->prev->next = thread->next; |
164 | thread->next = NULL; |
165 | thread->prev = NULL; |
166 | MUTEX_UNLOCK(&create_destruct_mutex); |
c2f2a82b |
167 | |
fc04eb16 |
168 | /* Thread is now disowned */ |
169 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
170 | |
171 | #ifdef WIN32 |
fc04eb16 |
172 | handle = thread->handle; |
173 | thread->handle = NULL; |
385d56e4 |
174 | #endif |
fc04eb16 |
175 | MUTEX_UNLOCK(&thread->mutex); |
176 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
177 | |
c7667023 |
178 | #ifdef WIN32 |
fc04eb16 |
179 | if (handle) |
180 | CloseHandle(handle); |
c7667023 |
181 | #endif |
385d56e4 |
182 | |
fc04eb16 |
183 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
184 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
185 | */ |
186 | aTHX = PL_curinterp; |
187 | PerlMemShared_free(thread); |
68795e93 |
188 | } |
189 | |
fc04eb16 |
190 | |
191 | /* Called on exit */ |
62375a60 |
192 | int |
193 | Perl_ithread_hook(pTHX) |
194 | { |
195 | int veto_cleanup = 0; |
196 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
197 | if ((aTHX == PL_curinterp) && (active_threads != 1)) { |
198 | if (ckWARN_d(WARN_THREADS)) { |
199 | Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running", active_threads); |
200 | } |
201 | veto_cleanup = 1; |
62375a60 |
202 | } |
203 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
204 | return (veto_cleanup); |
62375a60 |
205 | } |
206 | |
68795e93 |
207 | |
208 | /* MAGIC (in mg.h sense) hooks */ |
209 | |
210 | int |
211 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
212 | { |
fc04eb16 |
213 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
214 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
215 | SvIOK_on(sv); |
fc04eb16 |
216 | return (0); |
68795e93 |
217 | } |
218 | |
219 | int |
220 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
221 | { |
f2cba68d |
222 | ithread *thread = (ithread *)mg->mg_ptr; |
223 | int cleanup; |
224 | |
68795e93 |
225 | MUTEX_LOCK(&thread->mutex); |
f2cba68d |
226 | cleanup = ((--thread->count == 0) && |
227 | (thread->state & PERL_ITHR_FINISHED) && |
228 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
229 | MUTEX_UNLOCK(&thread->mutex); |
230 | |
231 | if (cleanup) |
232 | S_ithread_destruct(aTHX_ thread); |
fc04eb16 |
233 | return (0); |
68795e93 |
234 | } |
235 | |
236 | int |
237 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
238 | { |
fc04eb16 |
239 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
240 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
241 | thread->count++; |
242 | MUTEX_UNLOCK(&thread->mutex); |
fc04eb16 |
243 | return (0); |
68795e93 |
244 | } |
245 | |
246 | MGVTBL ithread_vtbl = { |
fc04eb16 |
247 | ithread_mg_get, /* get */ |
248 | 0, /* set */ |
249 | 0, /* len */ |
250 | 0, /* clear */ |
251 | ithread_mg_free, /* free */ |
252 | 0, /* copy */ |
253 | ithread_mg_dup /* dup */ |
68795e93 |
254 | }; |
255 | |
47ba8780 |
256 | |
514612b7 |
257 | /* Provided default, minimum and rational stack sizes */ |
258 | static IV |
259 | good_stack_size(pTHX_ IV stack_size) |
260 | { |
261 | /* Use default stack size if no stack size specified */ |
262 | if (! stack_size) |
263 | return (default_stack_size); |
264 | |
265 | #ifdef PTHREAD_STACK_MIN |
266 | /* Can't use less than minimum */ |
267 | if (stack_size < PTHREAD_STACK_MIN) { |
268 | if (ckWARN_d(WARN_THREADS)) { |
269 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
270 | } |
271 | return (PTHREAD_STACK_MIN); |
272 | } |
273 | #endif |
274 | |
275 | /* Round up to page size boundary */ |
276 | if (page_size <= 0) { |
d305c2c9 |
277 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
278 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
279 | # ifdef _SC_PAGESIZE |
514612b7 |
280 | page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
281 | # else |
514612b7 |
282 | page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
283 | # endif |
514612b7 |
284 | if ((long)page_size < 0) { |
285 | if (errno) { |
286 | SV * const error = get_sv("@", FALSE); |
287 | (void)SvUPGRADE(error, SVt_PV); |
288 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
289 | } else { |
290 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
291 | } |
292 | } |
d305c2c9 |
293 | #else |
294 | # ifdef HAS_GETPAGESIZE |
514612b7 |
295 | page_size = getpagesize(); |
514612b7 |
296 | # else |
d305c2c9 |
297 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
298 | page_size = PAGESIZE; |
299 | # else |
514612b7 |
300 | page_size = 8192; /* A conservative default */ |
d305c2c9 |
301 | # endif |
514612b7 |
302 | # endif |
d305c2c9 |
303 | if (page_size <= 0) |
304 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)page_size); |
514612b7 |
305 | #endif |
306 | } |
307 | stack_size = ((stack_size + (page_size - 1)) / page_size) * page_size; |
308 | |
309 | return (stack_size); |
310 | } |
311 | |
312 | |
fc04eb16 |
313 | /* Starts executing the thread. |
314 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
315 | */ |
47ba8780 |
316 | #ifdef WIN32 |
f4cc38af |
317 | static THREAD_RET_TYPE |
fc04eb16 |
318 | S_ithread_run(LPVOID arg) |
47ba8780 |
319 | #else |
fc04eb16 |
320 | static void * |
321 | S_ithread_run(void * arg) |
47ba8780 |
322 | #endif |
fc04eb16 |
323 | { |
324 | ithread *thread = (ithread *)arg; |
325 | int cleanup; |
f2cba68d |
326 | |
fc04eb16 |
327 | dTHXa(thread->interp); |
328 | PERL_SET_CONTEXT(thread->interp); |
329 | S_ithread_set(aTHX_ thread); |
47ba8780 |
330 | |
68795e93 |
331 | #if 0 |
fc04eb16 |
332 | /* Far from clear messing with ->thr child-side is a good idea */ |
333 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
334 | #ifdef WIN32 |
fc04eb16 |
335 | thread->thr = GetCurrentThreadId(); |
47ba8780 |
336 | #else |
fc04eb16 |
337 | thread->thr = pthread_self(); |
47ba8780 |
338 | #endif |
fc04eb16 |
339 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
340 | #endif |
47ba8780 |
341 | |
fc04eb16 |
342 | PL_perl_destruct_level = 2; |
f2cba68d |
343 | |
fc04eb16 |
344 | { |
345 | AV *params = (AV *)SvRV(thread->params); |
346 | int len = (int)av_len(params)+1; |
347 | int ii; |
348 | |
349 | dSP; |
350 | ENTER; |
351 | SAVETMPS; |
352 | |
353 | /* Put args on the stack */ |
354 | PUSHMARK(SP); |
355 | for (ii=0; ii < len; ii++) { |
356 | XPUSHs(av_shift(params)); |
357 | } |
358 | PUTBACK; |
359 | |
360 | /* Run the specified function */ |
361 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
362 | |
363 | /* Remove args from stack and put back in params array */ |
364 | SPAGAIN; |
365 | for (ii=len-1; ii >= 0; ii--) { |
366 | SV *sv = POPs; |
367 | av_store(params, ii, SvREFCNT_inc(sv)); |
368 | } |
369 | |
370 | /* Check for failure */ |
371 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
c0003851 |
372 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
fc04eb16 |
373 | } |
374 | |
375 | FREETMPS; |
376 | LEAVE; |
377 | |
378 | /* Release function ref */ |
379 | SvREFCNT_dec(thread->init_function); |
380 | thread->init_function = Nullsv; |
381 | } |
62375a60 |
382 | |
fc04eb16 |
383 | PerlIO_flush((PerlIO *)NULL); |
384 | |
385 | MUTEX_LOCK(&thread->mutex); |
386 | /* Mark as finished */ |
387 | thread->state |= PERL_ITHR_FINISHED; |
388 | /* Cleanup if detached */ |
389 | cleanup = (thread->state & PERL_ITHR_DETACHED); |
390 | MUTEX_UNLOCK(&thread->mutex); |
391 | |
392 | if (cleanup) |
393 | S_ithread_destruct(aTHX_ thread); |
394 | |
395 | MUTEX_LOCK(&create_destruct_mutex); |
396 | active_threads--; |
397 | MUTEX_UNLOCK(&create_destruct_mutex); |
91604d21 |
398 | |
47ba8780 |
399 | #ifdef WIN32 |
fc04eb16 |
400 | return ((DWORD)0); |
e8f2bb9a |
401 | #else |
fc04eb16 |
402 | return (0); |
47ba8780 |
403 | #endif |
68795e93 |
404 | } |
405 | |
fc04eb16 |
406 | |
407 | /* Type conversion helper functions */ |
f4cc38af |
408 | static SV * |
68795e93 |
409 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
410 | { |
411 | SV *sv; |
412 | MAGIC *mg; |
fc04eb16 |
413 | |
68795e93 |
414 | if (inc) { |
fc04eb16 |
415 | MUTEX_LOCK(&thread->mutex); |
416 | thread->count++; |
417 | MUTEX_UNLOCK(&thread->mutex); |
418 | } |
419 | |
420 | if (! obj) { |
421 | obj = newSV(0); |
68795e93 |
422 | } |
fc04eb16 |
423 | |
424 | sv = newSVrv(obj, classname); |
425 | sv_setiv(sv, PTR2IV(thread)); |
426 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
427 | mg->mg_flags |= MGf_DUP; |
428 | SvREADONLY_on(sv); |
fc04eb16 |
429 | |
430 | return (obj); |
68795e93 |
431 | } |
47ba8780 |
432 | |
f4cc38af |
433 | static ithread * |
68795e93 |
434 | SV_to_ithread(pTHX_ SV *sv) |
435 | { |
fc04eb16 |
436 | /* Argument is a thread */ |
437 | if (SvROK(sv)) { |
438 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
439 | } |
440 | /* Argument is classname, therefore return current thread */ |
441 | return (S_ithread_get(aTHX)); |
47ba8780 |
442 | } |
443 | |
47ba8780 |
444 | |
fc04eb16 |
445 | /* threads->create() |
446 | * Called in context of parent thread. |
447 | */ |
f4cc38af |
448 | static SV * |
fc04eb16 |
449 | S_ithread_create( |
450 | pTHX_ SV *obj, |
451 | char *classname, |
452 | SV *init_function, |
514612b7 |
453 | IV stack_size, |
fc04eb16 |
454 | SV *params) |
68795e93 |
455 | { |
fc04eb16 |
456 | ithread *thread; |
457 | CLONE_PARAMS clone_param; |
458 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
459 | |
fc04eb16 |
460 | SV **tmps_tmp = PL_tmps_stack; |
461 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
462 | #ifndef WIN32 |
fc04eb16 |
463 | int rc_stack_size = 0; |
464 | int rc_thread_create = 0; |
d94006e8 |
465 | #endif |
3b1c3273 |
466 | |
fc04eb16 |
467 | MUTEX_LOCK(&create_destruct_mutex); |
468 | |
469 | /* Allocate thread structure */ |
470 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
471 | if (!thread) { |
472 | MUTEX_UNLOCK(&create_destruct_mutex); |
473 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
474 | my_exit(1); |
475 | } |
476 | Zero(thread, 1, ithread); |
477 | |
478 | /* Add to threads list */ |
479 | thread->next = threads; |
480 | thread->prev = threads->prev; |
481 | threads->prev = thread; |
482 | thread->prev->next = thread; |
c05ae023 |
483 | |
fc04eb16 |
484 | /* Set count to 1 immediately in case thread exits before |
485 | * we return to caller! |
486 | */ |
487 | thread->count = 1; |
488 | |
489 | MUTEX_INIT(&thread->mutex); |
490 | thread->tid = tid_counter++; |
514612b7 |
491 | thread->stack_size = good_stack_size(aTHX_ stack_size); |
fc04eb16 |
492 | thread->gimme = GIMME_V; |
493 | |
494 | /* "Clone" our interpreter into the thread's interpreter. |
495 | * This gives thread access to "static data" and code. |
496 | */ |
497 | PerlIO_flush((PerlIO *)NULL); |
498 | S_ithread_set(aTHX_ thread); |
499 | |
500 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
501 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
502 | set during the clone */ |
3b1c3273 |
503 | |
47ba8780 |
504 | #ifdef WIN32 |
fc04eb16 |
505 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
506 | #else |
fc04eb16 |
507 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
508 | #endif |
47ba8780 |
509 | |
fc04eb16 |
510 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
511 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
512 | * context for the duration of our work for new interpreter. |
513 | */ |
514 | { |
515 | dTHXa(thread->interp); |
516 | |
517 | MY_CXT_CLONE; |
518 | |
519 | /* Here we remove END blocks since they should only run in the thread |
520 | * they are created |
521 | */ |
522 | SvREFCNT_dec(PL_endav); |
523 | PL_endav = newAV(); |
404aaa48 |
524 | |
f2e0bb91 |
525 | if (SvPOK(init_function)) { |
526 | thread->init_function = newSV(0); |
527 | sv_copypv(thread->init_function, init_function); |
528 | } else { |
529 | clone_param.flags = 0; |
530 | thread->init_function = sv_dup(init_function, &clone_param); |
531 | if (SvREFCNT(thread->init_function) == 0) { |
532 | SvREFCNT_inc(thread->init_function); |
533 | } |
fc04eb16 |
534 | } |
535 | |
536 | thread->params = sv_dup(params, &clone_param); |
537 | SvREFCNT_inc(thread->params); |
538 | |
539 | /* The code below checks that anything living on the tmps stack and |
540 | * has been cloned (so it lives in the ptr_table) has a refcount |
541 | * higher than 0. |
542 | * |
543 | * If the refcount is 0 it means that a something on the stack/context |
544 | * was holding a reference to it and since we init_stacks() in |
545 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
546 | * The reason it was cloned was that it lived on the @_ stack. |
547 | * |
548 | * Example of this can be found in bugreport 15837 where calls in the |
549 | * parameter list end up as a temp. |
550 | * |
551 | * One could argue that this fix should be in perl_clone. |
552 | */ |
553 | while (tmps_ix > 0) { |
554 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
555 | tmps_ix--; |
556 | if (sv && SvREFCNT(sv) == 0) { |
557 | SvREFCNT_inc(sv); |
558 | SvREFCNT_dec(sv); |
559 | } |
560 | } |
561 | |
562 | SvTEMP_off(thread->init_function); |
563 | ptr_table_free(PL_ptr_table); |
564 | PL_ptr_table = NULL; |
565 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
566 | } |
567 | S_ithread_set(aTHX_ current_thread); |
568 | PERL_SET_CONTEXT(aTHX); |
569 | |
570 | /* Create/start the thread */ |
47ba8780 |
571 | #ifdef WIN32 |
fc04eb16 |
572 | thread->handle = CreateThread(NULL, |
514612b7 |
573 | (DWORD)thread->stack_size, |
fc04eb16 |
574 | S_ithread_run, |
575 | (LPVOID)thread, |
514612b7 |
576 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
577 | &thread->thr); |
82c40bf6 |
578 | #else |
fc04eb16 |
579 | { |
580 | static pthread_attr_t attr; |
581 | static int attr_inited = 0; |
582 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
583 | if (! attr_inited) { |
584 | pthread_attr_init(&attr); |
585 | attr_inited = 1; |
586 | } |
587 | |
fa26028c |
588 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
589 | /* Threads start out joinable */ |
590 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
591 | # endif |
fc04eb16 |
592 | |
514612b7 |
593 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
594 | /* Set thread's stack size */ |
514612b7 |
595 | if (thread->stack_size > 0) { |
596 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
597 | } |
3eb37d38 |
598 | # endif |
599 | |
fc04eb16 |
600 | /* Create the thread */ |
601 | if (! rc_stack_size) { |
602 | # ifdef OLD_PTHREADS_API |
603 | rc_thread_create = pthread_create(&thread->thr, |
604 | attr, |
605 | S_ithread_run, |
606 | (void *)thread); |
607 | # else |
608 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
609 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
610 | # endif |
611 | rc_thread_create = pthread_create(&thread->thr, |
612 | &attr, |
613 | S_ithread_run, |
614 | (void *)thread); |
19a077f6 |
615 | # endif |
fc04eb16 |
616 | } |
514612b7 |
617 | |
618 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
619 | /* Try to get thread's actual stack size */ |
620 | { |
621 | size_t stacksize; |
622 | if (! pthread_attr_getstacksize(&attr, &stacksize)) { |
623 | if (stacksize) { |
624 | thread->stack_size = (IV)stacksize; |
625 | } |
626 | } |
627 | } |
628 | # endif |
fc04eb16 |
629 | } |
82c40bf6 |
630 | #endif |
bcd9ca9b |
631 | |
fc04eb16 |
632 | /* Check for errors */ |
d94006e8 |
633 | #ifdef WIN32 |
fc04eb16 |
634 | if (thread->handle == NULL) { |
d94006e8 |
635 | #else |
fc04eb16 |
636 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
637 | #endif |
fc04eb16 |
638 | MUTEX_UNLOCK(&create_destruct_mutex); |
639 | sv_2mortal(params); |
640 | S_ithread_destruct(aTHX_ thread); |
d94006e8 |
641 | #ifndef WIN32 |
514612b7 |
642 | if (ckWARN_d(WARN_THREADS)) { |
643 | if (rc_stack_size) |
644 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
645 | else |
646 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
647 | } |
d94006e8 |
648 | #endif |
fc04eb16 |
649 | return (&PL_sv_undef); |
650 | } |
651 | |
652 | active_threads++; |
653 | MUTEX_UNLOCK(&create_destruct_mutex); |
654 | |
655 | sv_2mortal(params); |
3b1c3273 |
656 | |
fc04eb16 |
657 | return (ithread_to_SV(aTHX_ obj, thread, classname, FALSE)); |
68795e93 |
658 | } |
47ba8780 |
659 | |
73e09c8f |
660 | #endif /* USE_ITHREADS */ |
e1c44605 |
661 | |
fcea4b7c |
662 | |
fc04eb16 |
663 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
664 | PROTOTYPES: DISABLE |
8222d950 |
665 | |
73e09c8f |
666 | #ifdef USE_ITHREADS |
667 | |
68795e93 |
668 | void |
f4cc38af |
669 | ithread_create(...) |
670 | PREINIT: |
671 | char *classname; |
514612b7 |
672 | ithread *thread; |
f4cc38af |
673 | SV *function_to_call; |
674 | AV *params; |
514612b7 |
675 | HV *specs; |
676 | IV stack_size; |
677 | int idx; |
f4cc38af |
678 | int ii; |
679 | CODE: |
514612b7 |
680 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
681 | if (--items < 2) |
682 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
683 | specs = (HV*)SvRV(ST(1)); |
684 | idx = 1; |
685 | } else { |
686 | if (items < 2) |
687 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
688 | specs = NULL; |
689 | idx = 0; |
690 | } |
f4cc38af |
691 | |
514612b7 |
692 | if (sv_isobject(ST(0))) { |
693 | /* $thr->create() */ |
694 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
695 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
696 | stack_size = thread->stack_size; |
697 | } else { |
698 | /* threads->create() */ |
699 | classname = (char *)SvPV_nolen(ST(0)); |
700 | stack_size = default_stack_size; |
701 | } |
702 | |
703 | function_to_call = ST(idx+1); |
704 | |
705 | if (specs) { |
706 | /* stack_size */ |
707 | if (hv_exists(specs, "stack", 5)) { |
708 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
709 | } else if (hv_exists(specs, "stacksize", 9)) { |
710 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
711 | } else if (hv_exists(specs, "stack_size", 10)) { |
712 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
713 | } |
714 | } |
f4cc38af |
715 | |
716 | /* Function args */ |
717 | params = newAV(); |
718 | if (items > 2) { |
514612b7 |
719 | for (ii=2; ii < items ; ii++) { |
720 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
721 | } |
722 | } |
723 | |
724 | /* Create thread */ |
bcd9ca9b |
725 | ST(0) = sv_2mortal(S_ithread_create(aTHX_ Nullsv, |
514612b7 |
726 | classname, |
727 | function_to_call, |
728 | stack_size, |
729 | newRV_noinc((SV*)params))); |
f4cc38af |
730 | /* XSRETURN(1); - implied */ |
731 | |
8222d950 |
732 | |
68795e93 |
733 | void |
f4cc38af |
734 | ithread_list(...) |
735 | PREINIT: |
736 | char *classname; |
fc04eb16 |
737 | ithread *thread; |
f4cc38af |
738 | int list_context; |
739 | IV count = 0; |
740 | PPCODE: |
741 | /* Class method only */ |
742 | if (SvROK(ST(0))) |
743 | Perl_croak(aTHX_ "Usage: threads->list()"); |
744 | classname = (char *)SvPV_nolen(ST(0)); |
745 | |
746 | /* Calling context */ |
747 | list_context = (GIMME_V == G_ARRAY); |
748 | |
749 | /* Walk through threads list */ |
750 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
751 | for (thread = threads->next; |
752 | thread != threads; |
753 | thread = thread->next) |
f4cc38af |
754 | { |
755 | /* Ignore detached or joined threads */ |
fc04eb16 |
756 | if (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)) { |
f4cc38af |
757 | continue; |
758 | } |
759 | /* Push object on stack if list context */ |
760 | if (list_context) { |
fc04eb16 |
761 | XPUSHs(sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
762 | } |
763 | count++; |
764 | } |
765 | MUTEX_UNLOCK(&create_destruct_mutex); |
766 | /* If scalar context, send back count */ |
767 | if (! list_context) { |
768 | XSRETURN_IV(count); |
769 | } |
678a9b6c |
770 | |
771 | |
772 | void |
f4cc38af |
773 | ithread_self(...) |
774 | PREINIT: |
775 | char *classname; |
fcea4b7c |
776 | ithread *thread; |
f4cc38af |
777 | CODE: |
778 | /* Class method only */ |
779 | if (SvROK(ST(0))) |
780 | Perl_croak(aTHX_ "Usage: threads->self()"); |
781 | classname = (char *)SvPV_nolen(ST(0)); |
782 | |
fcea4b7c |
783 | thread = S_ithread_get(aTHX); |
784 | |
785 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
786 | /* XSRETURN(1); - implied */ |
47ba8780 |
787 | |
47ba8780 |
788 | |
789 | void |
f4cc38af |
790 | ithread_tid(...) |
791 | PREINIT: |
792 | ithread *thread; |
793 | CODE: |
794 | thread = SV_to_ithread(aTHX_ ST(0)); |
795 | XST_mUV(0, thread->tid); |
796 | /* XSRETURN(1); - implied */ |
797 | |
e1c44605 |
798 | |
f9dff5f5 |
799 | void |
f4cc38af |
800 | ithread_join(...) |
801 | PREINIT: |
fcea4b7c |
802 | ithread *thread; |
803 | int join_err; |
f4cc38af |
804 | AV *params; |
805 | int len; |
806 | int ii; |
fcea4b7c |
807 | #ifdef WIN32 |
808 | DWORD waitcode; |
809 | #else |
810 | void *retval; |
811 | #endif |
f4cc38af |
812 | PPCODE: |
813 | /* Object method only */ |
814 | if (! sv_isobject(ST(0))) |
815 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
816 | |
fcea4b7c |
817 | /* Check if the thread is joinable */ |
818 | thread = SV_to_ithread(aTHX_ ST(0)); |
819 | MUTEX_LOCK(&thread->mutex); |
820 | join_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
821 | MUTEX_UNLOCK(&thread->mutex); |
822 | if (join_err) { |
823 | if (join_err & PERL_ITHR_DETACHED) { |
824 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
825 | } else { |
826 | Perl_croak(aTHX_ "Thread already joined"); |
827 | } |
828 | } |
829 | |
830 | /* Join the thread */ |
831 | #ifdef WIN32 |
832 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
833 | #else |
834 | pthread_join(thread->thr, &retval); |
835 | #endif |
836 | |
837 | MUTEX_LOCK(&thread->mutex); |
838 | /* Mark as joined */ |
839 | thread->state |= PERL_ITHR_JOINED; |
840 | |
841 | /* Get the return value from the call_sv */ |
842 | { |
843 | AV *params_copy; |
844 | PerlInterpreter *other_perl; |
845 | CLONE_PARAMS clone_params; |
846 | ithread *current_thread; |
847 | |
848 | params_copy = (AV *)SvRV(thread->params); |
849 | other_perl = thread->interp; |
850 | clone_params.stashes = newAV(); |
851 | clone_params.flags = CLONEf_JOIN_IN; |
852 | PL_ptr_table = ptr_table_new(); |
853 | current_thread = S_ithread_get(aTHX); |
854 | S_ithread_set(aTHX_ thread); |
855 | /* Ensure 'meaningful' addresses retain their meaning */ |
856 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
857 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
858 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
859 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
860 | S_ithread_set(aTHX_ current_thread); |
861 | SvREFCNT_dec(clone_params.stashes); |
862 | SvREFCNT_inc(params); |
863 | ptr_table_free(PL_ptr_table); |
864 | PL_ptr_table = NULL; |
865 | } |
866 | |
867 | /* We are finished with the thread */ |
868 | S_ithread_clear(aTHX_ thread); |
869 | MUTEX_UNLOCK(&thread->mutex); |
870 | |
871 | /* If no return values, then just return */ |
f4cc38af |
872 | if (! params) { |
873 | XSRETURN_UNDEF; |
874 | } |
875 | |
876 | /* Put return values on stack */ |
877 | len = (int)AvFILL(params); |
878 | for (ii=0; ii <= len; ii++) { |
879 | SV* param = av_shift(params); |
880 | XPUSHs(sv_2mortal(param)); |
881 | } |
882 | |
883 | /* Free return value array */ |
884 | SvREFCNT_dec(params); |
885 | |
886 | |
887 | void |
888 | ithread_yield(...) |
889 | CODE: |
890 | YIELD; |
891 | |
892 | |
893 | void |
894 | ithread_detach(...) |
895 | PREINIT: |
896 | ithread *thread; |
fcea4b7c |
897 | int detach_err; |
898 | int cleanup; |
f4cc38af |
899 | CODE: |
900 | thread = SV_to_ithread(aTHX_ ST(0)); |
fcea4b7c |
901 | MUTEX_LOCK(&thread->mutex); |
902 | |
903 | /* Check if the thread is detachable */ |
904 | if ((detach_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)))) { |
905 | MUTEX_UNLOCK(&thread->mutex); |
906 | if (detach_err & PERL_ITHR_DETACHED) { |
907 | Perl_croak(aTHX_ "Thread already detached"); |
908 | } else { |
909 | Perl_croak(aTHX_ "Cannot detach a joined thread"); |
910 | } |
911 | } |
912 | |
913 | /* Detach the thread */ |
914 | thread->state |= PERL_ITHR_DETACHED; |
915 | #ifdef WIN32 |
916 | /* Windows has no 'detach thread' function */ |
917 | #else |
918 | PERL_THREAD_DETACH(thread->thr); |
919 | #endif |
920 | /* Cleanup if finished */ |
921 | cleanup = (thread->state & PERL_ITHR_FINISHED); |
922 | MUTEX_UNLOCK(&thread->mutex); |
923 | |
924 | if (cleanup) |
925 | S_ithread_destruct(aTHX_ thread); |
f4cc38af |
926 | |
47ba8780 |
927 | |
928 | void |
c0003851 |
929 | ithread_kill(...) |
930 | PREINIT: |
931 | ithread *thread; |
932 | char *sig_name; |
933 | IV signal; |
934 | CODE: |
935 | /* Must have safe signals */ |
936 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
937 | Perl_croak(aTHX_ "Cannot signal other threads without safe signals"); |
938 | |
939 | /* Object method only */ |
940 | if (! sv_isobject(ST(0))) |
941 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
942 | |
943 | /* Get thread */ |
944 | thread = SV_to_ithread(aTHX_ ST(0)); |
945 | |
946 | /* Get signal */ |
947 | sig_name = SvPV_nolen(ST(1)); |
948 | if (isALPHA(*sig_name)) { |
949 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') |
950 | sig_name += 3; |
404aaa48 |
951 | if ((signal = whichsig(sig_name)) < 0) |
c0003851 |
952 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
953 | } else |
954 | signal = SvIV(ST(1)); |
955 | |
956 | /* Set the signal for the thread */ |
957 | { |
958 | dTHXa(thread->interp); |
959 | PL_psig_pend[signal]++; |
960 | PL_sig_pending = 1; |
961 | } |
962 | |
963 | /* Return the thread to allow for method chaining */ |
964 | ST(0) = ST(0); |
965 | /* XSRETURN(1); - implied */ |
966 | |
967 | |
968 | void |
f4cc38af |
969 | ithread_DESTROY(...) |
970 | CODE: |
fcea4b7c |
971 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
972 | |
973 | |
974 | void |
975 | ithread_equal(...) |
fc04eb16 |
976 | PREINIT: |
977 | int are_equal = 0; |
f4cc38af |
978 | CODE: |
fc04eb16 |
979 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
980 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
981 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
982 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
983 | are_equal = (thr1->tid == thr2->tid); |
984 | } |
985 | if (are_equal) { |
986 | XST_mYES(0); |
f4cc38af |
987 | } else { |
fc04eb16 |
988 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
989 | XST_mIV(0, 0); |
990 | } |
991 | /* XSRETURN(1); - implied */ |
992 | |
47ba8780 |
993 | |
47ba8780 |
994 | void |
f4cc38af |
995 | ithread_object(...) |
996 | PREINIT: |
997 | char *classname; |
998 | UV tid; |
fc04eb16 |
999 | ithread *thread; |
f4cc38af |
1000 | int found = 0; |
1001 | CODE: |
1002 | /* Class method only */ |
1003 | if (SvROK(ST(0))) |
1004 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
1005 | classname = (char *)SvPV_nolen(ST(0)); |
1006 | |
1007 | if ((items < 2) || ! SvOK(ST(1))) { |
1008 | XSRETURN_UNDEF; |
1009 | } |
1010 | |
fc04eb16 |
1011 | /* threads->object($tid) */ |
f4cc38af |
1012 | tid = SvUV(ST(1)); |
1013 | |
1014 | /* Walk through threads list */ |
1015 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
1016 | for (thread = threads->next; |
1017 | thread != threads; |
1018 | thread = thread->next) |
f4cc38af |
1019 | { |
1020 | /* Look for TID, but ignore detached or joined threads */ |
fc04eb16 |
1021 | if ((thread->tid != tid) || |
1022 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
f4cc38af |
1023 | { |
1024 | continue; |
1025 | } |
1026 | /* Put object on stack */ |
fc04eb16 |
1027 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1028 | found = 1; |
1029 | break; |
1030 | } |
1031 | MUTEX_UNLOCK(&create_destruct_mutex); |
1032 | if (! found) { |
1033 | XSRETURN_UNDEF; |
1034 | } |
1035 | /* XSRETURN(1); - implied */ |
1036 | |
1037 | |
1038 | void |
1039 | ithread__handle(...); |
1040 | PREINIT: |
1041 | ithread *thread; |
1042 | CODE: |
1043 | thread = SV_to_ithread(aTHX_ ST(0)); |
1044 | #ifdef WIN32 |
fcea4b7c |
1045 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1046 | #else |
75ba4ae2 |
1047 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1048 | #endif |
1049 | /* XSRETURN(1); - implied */ |
68795e93 |
1050 | |
514612b7 |
1051 | |
1052 | void |
1053 | ithread_get_stack_size(...) |
1054 | PREINIT: |
1055 | IV stack_size; |
1056 | CODE: |
1057 | if (sv_isobject(ST(0))) { |
1058 | /* $thr->get_stack_size() */ |
1059 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1060 | stack_size = thread->stack_size; |
1061 | } else { |
1062 | /* threads->get_stack_size() */ |
1063 | stack_size = default_stack_size; |
1064 | } |
1065 | XST_mIV(0, stack_size); |
1066 | /* XSRETURN(1); - implied */ |
1067 | |
1068 | |
1069 | void |
1070 | ithread_set_stack_size(...) |
1071 | PREINIT: |
1072 | IV old_size; |
1073 | CODE: |
1074 | if (items != 2) |
1075 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
1076 | if (sv_isobject(ST(0))) |
1077 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
1078 | |
1079 | old_size = default_stack_size; |
1080 | default_stack_size = good_stack_size(aTHX_ SvIV(ST(1))); |
1081 | XST_mIV(0, old_size); |
1082 | /* XSRETURN(1); - implied */ |
1083 | |
73e09c8f |
1084 | #endif /* USE_ITHREADS */ |
1085 | |
fc04eb16 |
1086 | |
68795e93 |
1087 | BOOT: |
1088 | { |
73e09c8f |
1089 | #ifdef USE_ITHREADS |
fc04eb16 |
1090 | /* The 'main' thread is thread 0. |
1091 | * It is detached (unjoinable) and immortal. |
1092 | */ |
62375a60 |
1093 | |
fc04eb16 |
1094 | ithread *thread; |
1095 | MY_CXT_INIT; |
1096 | |
1097 | PL_perl_destruct_level = 2; |
1098 | MUTEX_INIT(&create_destruct_mutex); |
1099 | MUTEX_LOCK(&create_destruct_mutex); |
1100 | |
1101 | PL_threadhook = &Perl_ithread_hook; |
1102 | |
1103 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
1104 | if (! thread) { |
1105 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
1106 | my_exit(1); |
1107 | } |
1108 | Zero(thread, 1, ithread); |
1109 | |
1110 | PL_perl_destruct_level = 2; |
1111 | MUTEX_INIT(&thread->mutex); |
1112 | |
1113 | thread->tid = tid_counter++; /* Thread 0 */ |
1114 | |
1115 | /* Head of the threads list */ |
1116 | threads = thread; |
1117 | thread->next = thread; |
1118 | thread->prev = thread; |
1119 | |
1120 | thread->count = 1; /* Immortal */ |
1121 | |
1122 | thread->interp = aTHX; |
1123 | thread->state = PERL_ITHR_DETACHED; /* Detached */ |
514612b7 |
1124 | thread->stack_size = default_stack_size; |
fc04eb16 |
1125 | # ifdef WIN32 |
1126 | thread->thr = GetCurrentThreadId(); |
1127 | # else |
1128 | thread->thr = pthread_self(); |
1129 | # endif |
1130 | |
1131 | active_threads++; |
1132 | |
1133 | S_ithread_set(aTHX_ thread); |
1134 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
1135 | #endif /* USE_ITHREADS */ |
68795e93 |
1136 | } |