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; |
5168baf3 |
85 | static IV joinable_threads = 0; |
514612b7 |
86 | #ifdef THREAD_CREATE_NEEDS_STACK |
87 | static IV default_stack_size = THREAD_CREATE_NEEDS_STACK; |
88 | #else |
89 | static IV default_stack_size = 0; |
90 | #endif |
91 | static IV page_size = 0; |
c05ae023 |
92 | |
93 | |
fc04eb16 |
94 | /* Used by Perl interpreter for thread context switching */ |
f4cc38af |
95 | static void |
fc04eb16 |
96 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
97 | { |
628ab322 |
98 | dMY_CXT; |
99 | MY_CXT.thread = thread; |
c05ae023 |
100 | } |
101 | |
fc04eb16 |
102 | static ithread * |
103 | S_ithread_get(pTHX) |
104 | { |
628ab322 |
105 | dMY_CXT; |
fc04eb16 |
106 | return (MY_CXT.thread); |
c05ae023 |
107 | } |
108 | |
109 | |
fc04eb16 |
110 | /* Free any data (such as the Perl interpreter) attached to an ithread |
111 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
112 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
113 | */ |
2e676467 |
114 | static void |
fc04eb16 |
115 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
116 | { |
117 | PerlInterpreter *interp; |
fc04eb16 |
118 | |
2e676467 |
119 | assert(thread->state & PERL_ITHR_FINISHED && |
f2cba68d |
120 | thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
2e676467 |
121 | |
122 | interp = thread->interp; |
123 | if (interp) { |
fc04eb16 |
124 | dTHXa(interp); |
125 | |
126 | PERL_SET_CONTEXT(interp); |
127 | S_ithread_set(aTHX_ thread); |
f2cba68d |
128 | |
fc04eb16 |
129 | SvREFCNT_dec(thread->params); |
130 | thread->params = Nullsv; |
2e676467 |
131 | |
fc04eb16 |
132 | perl_destruct(interp); |
133 | thread->interp = NULL; |
2e676467 |
134 | } |
135 | if (interp) |
fc04eb16 |
136 | perl_free(interp); |
137 | |
2e676467 |
138 | PERL_SET_CONTEXT(aTHX); |
139 | } |
140 | |
68795e93 |
141 | |
fc04eb16 |
142 | /* Free an ithread structure and any attached data if its count == 0 */ |
bcd9ca9b |
143 | static void |
fc04eb16 |
144 | S_ithread_destruct(pTHX_ ithread *thread) |
68795e93 |
145 | { |
385d56e4 |
146 | #ifdef WIN32 |
fc04eb16 |
147 | HANDLE handle; |
385d56e4 |
148 | #endif |
149 | |
fc04eb16 |
150 | MUTEX_LOCK(&thread->mutex); |
bcd9ca9b |
151 | |
fc04eb16 |
152 | /* Thread is still in use */ |
153 | if (thread->count != 0) { |
154 | MUTEX_UNLOCK(&thread->mutex); |
155 | return; |
156 | } |
9feacc09 |
157 | |
fc04eb16 |
158 | MUTEX_LOCK(&create_destruct_mutex); |
159 | /* Main thread (0) is immortal and should never get here */ |
160 | assert(thread->tid != 0); |
161 | |
162 | /* Remove from circular list of threads */ |
163 | thread->next->prev = thread->prev; |
164 | thread->prev->next = thread->next; |
165 | thread->next = NULL; |
166 | thread->prev = NULL; |
167 | MUTEX_UNLOCK(&create_destruct_mutex); |
c2f2a82b |
168 | |
fc04eb16 |
169 | /* Thread is now disowned */ |
170 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
171 | |
172 | #ifdef WIN32 |
fc04eb16 |
173 | handle = thread->handle; |
174 | thread->handle = NULL; |
385d56e4 |
175 | #endif |
fc04eb16 |
176 | MUTEX_UNLOCK(&thread->mutex); |
177 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
178 | |
c7667023 |
179 | #ifdef WIN32 |
fc04eb16 |
180 | if (handle) |
181 | CloseHandle(handle); |
c7667023 |
182 | #endif |
385d56e4 |
183 | |
fc04eb16 |
184 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
185 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
186 | */ |
187 | aTHX = PL_curinterp; |
188 | PerlMemShared_free(thread); |
68795e93 |
189 | } |
190 | |
fc04eb16 |
191 | |
192 | /* Called on exit */ |
62375a60 |
193 | int |
194 | Perl_ithread_hook(pTHX) |
195 | { |
196 | int veto_cleanup = 0; |
197 | MUTEX_LOCK(&create_destruct_mutex); |
5168baf3 |
198 | if ((aTHX == PL_curinterp) && (joinable_threads != 1)) { |
fc04eb16 |
199 | if (ckWARN_d(WARN_THREADS)) { |
5168baf3 |
200 | Perl_warn(aTHX_ "A thread exited while %" IVdf " threads were running", joinable_threads); |
fc04eb16 |
201 | } |
202 | veto_cleanup = 1; |
62375a60 |
203 | } |
204 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
205 | return (veto_cleanup); |
62375a60 |
206 | } |
207 | |
68795e93 |
208 | |
209 | /* MAGIC (in mg.h sense) hooks */ |
210 | |
211 | int |
212 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
213 | { |
fc04eb16 |
214 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
215 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
216 | SvIOK_on(sv); |
fc04eb16 |
217 | return (0); |
68795e93 |
218 | } |
219 | |
220 | int |
221 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
222 | { |
f2cba68d |
223 | ithread *thread = (ithread *)mg->mg_ptr; |
224 | int cleanup; |
225 | |
68795e93 |
226 | MUTEX_LOCK(&thread->mutex); |
f2cba68d |
227 | cleanup = ((--thread->count == 0) && |
228 | (thread->state & PERL_ITHR_FINISHED) && |
229 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
230 | MUTEX_UNLOCK(&thread->mutex); |
231 | |
232 | if (cleanup) |
233 | S_ithread_destruct(aTHX_ thread); |
fc04eb16 |
234 | return (0); |
68795e93 |
235 | } |
236 | |
237 | int |
238 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
239 | { |
fc04eb16 |
240 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
241 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
242 | thread->count++; |
243 | MUTEX_UNLOCK(&thread->mutex); |
fc04eb16 |
244 | return (0); |
68795e93 |
245 | } |
246 | |
247 | MGVTBL ithread_vtbl = { |
fc04eb16 |
248 | ithread_mg_get, /* get */ |
249 | 0, /* set */ |
250 | 0, /* len */ |
251 | 0, /* clear */ |
252 | ithread_mg_free, /* free */ |
253 | 0, /* copy */ |
254 | ithread_mg_dup /* dup */ |
68795e93 |
255 | }; |
256 | |
47ba8780 |
257 | |
514612b7 |
258 | /* Provided default, minimum and rational stack sizes */ |
259 | static IV |
260 | good_stack_size(pTHX_ IV stack_size) |
261 | { |
262 | /* Use default stack size if no stack size specified */ |
263 | if (! stack_size) |
264 | return (default_stack_size); |
265 | |
266 | #ifdef PTHREAD_STACK_MIN |
267 | /* Can't use less than minimum */ |
268 | if (stack_size < PTHREAD_STACK_MIN) { |
269 | if (ckWARN_d(WARN_THREADS)) { |
270 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
271 | } |
272 | return (PTHREAD_STACK_MIN); |
273 | } |
274 | #endif |
275 | |
276 | /* Round up to page size boundary */ |
277 | if (page_size <= 0) { |
d305c2c9 |
278 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
279 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
280 | # ifdef _SC_PAGESIZE |
514612b7 |
281 | page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
282 | # else |
514612b7 |
283 | page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
284 | # endif |
514612b7 |
285 | if ((long)page_size < 0) { |
286 | if (errno) { |
287 | SV * const error = get_sv("@", FALSE); |
288 | (void)SvUPGRADE(error, SVt_PV); |
289 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
290 | } else { |
291 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
292 | } |
293 | } |
d305c2c9 |
294 | #else |
295 | # ifdef HAS_GETPAGESIZE |
514612b7 |
296 | page_size = getpagesize(); |
514612b7 |
297 | # else |
d305c2c9 |
298 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
299 | page_size = PAGESIZE; |
300 | # else |
514612b7 |
301 | page_size = 8192; /* A conservative default */ |
d305c2c9 |
302 | # endif |
514612b7 |
303 | # endif |
d305c2c9 |
304 | if (page_size <= 0) |
305 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)page_size); |
514612b7 |
306 | #endif |
307 | } |
308 | stack_size = ((stack_size + (page_size - 1)) / page_size) * page_size; |
309 | |
310 | return (stack_size); |
311 | } |
312 | |
313 | |
fc04eb16 |
314 | /* Starts executing the thread. |
315 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
316 | */ |
47ba8780 |
317 | #ifdef WIN32 |
f4cc38af |
318 | static THREAD_RET_TYPE |
fc04eb16 |
319 | S_ithread_run(LPVOID arg) |
47ba8780 |
320 | #else |
fc04eb16 |
321 | static void * |
322 | S_ithread_run(void * arg) |
47ba8780 |
323 | #endif |
fc04eb16 |
324 | { |
325 | ithread *thread = (ithread *)arg; |
326 | int cleanup; |
f2cba68d |
327 | |
fc04eb16 |
328 | dTHXa(thread->interp); |
329 | PERL_SET_CONTEXT(thread->interp); |
330 | S_ithread_set(aTHX_ thread); |
47ba8780 |
331 | |
68795e93 |
332 | #if 0 |
fc04eb16 |
333 | /* Far from clear messing with ->thr child-side is a good idea */ |
334 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
335 | #ifdef WIN32 |
fc04eb16 |
336 | thread->thr = GetCurrentThreadId(); |
47ba8780 |
337 | #else |
fc04eb16 |
338 | thread->thr = pthread_self(); |
47ba8780 |
339 | #endif |
fc04eb16 |
340 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
341 | #endif |
47ba8780 |
342 | |
fc04eb16 |
343 | PL_perl_destruct_level = 2; |
f2cba68d |
344 | |
fc04eb16 |
345 | { |
346 | AV *params = (AV *)SvRV(thread->params); |
347 | int len = (int)av_len(params)+1; |
348 | int ii; |
349 | |
350 | dSP; |
351 | ENTER; |
352 | SAVETMPS; |
353 | |
354 | /* Put args on the stack */ |
355 | PUSHMARK(SP); |
356 | for (ii=0; ii < len; ii++) { |
357 | XPUSHs(av_shift(params)); |
358 | } |
359 | PUTBACK; |
360 | |
361 | /* Run the specified function */ |
362 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
363 | |
364 | /* Remove args from stack and put back in params array */ |
365 | SPAGAIN; |
366 | for (ii=len-1; ii >= 0; ii--) { |
367 | SV *sv = POPs; |
368 | av_store(params, ii, SvREFCNT_inc(sv)); |
369 | } |
370 | |
371 | /* Check for failure */ |
372 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
c0003851 |
373 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
fc04eb16 |
374 | } |
375 | |
376 | FREETMPS; |
377 | LEAVE; |
378 | |
379 | /* Release function ref */ |
380 | SvREFCNT_dec(thread->init_function); |
381 | thread->init_function = Nullsv; |
382 | } |
62375a60 |
383 | |
fc04eb16 |
384 | PerlIO_flush((PerlIO *)NULL); |
385 | |
386 | MUTEX_LOCK(&thread->mutex); |
387 | /* Mark as finished */ |
388 | thread->state |= PERL_ITHR_FINISHED; |
389 | /* Cleanup if detached */ |
390 | cleanup = (thread->state & PERL_ITHR_DETACHED); |
391 | MUTEX_UNLOCK(&thread->mutex); |
392 | |
393 | if (cleanup) |
394 | S_ithread_destruct(aTHX_ thread); |
395 | |
396 | MUTEX_LOCK(&create_destruct_mutex); |
397 | active_threads--; |
5168baf3 |
398 | if (!cleanup) { |
399 | joinable_threads--; |
400 | } |
fc04eb16 |
401 | MUTEX_UNLOCK(&create_destruct_mutex); |
91604d21 |
402 | |
47ba8780 |
403 | #ifdef WIN32 |
fc04eb16 |
404 | return ((DWORD)0); |
e8f2bb9a |
405 | #else |
fc04eb16 |
406 | return (0); |
47ba8780 |
407 | #endif |
68795e93 |
408 | } |
409 | |
fc04eb16 |
410 | |
411 | /* Type conversion helper functions */ |
f4cc38af |
412 | static SV * |
68795e93 |
413 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
414 | { |
415 | SV *sv; |
416 | MAGIC *mg; |
fc04eb16 |
417 | |
68795e93 |
418 | if (inc) { |
fc04eb16 |
419 | MUTEX_LOCK(&thread->mutex); |
420 | thread->count++; |
421 | MUTEX_UNLOCK(&thread->mutex); |
422 | } |
423 | |
424 | if (! obj) { |
425 | obj = newSV(0); |
68795e93 |
426 | } |
fc04eb16 |
427 | |
428 | sv = newSVrv(obj, classname); |
429 | sv_setiv(sv, PTR2IV(thread)); |
430 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
431 | mg->mg_flags |= MGf_DUP; |
432 | SvREADONLY_on(sv); |
fc04eb16 |
433 | |
434 | return (obj); |
68795e93 |
435 | } |
47ba8780 |
436 | |
f4cc38af |
437 | static ithread * |
68795e93 |
438 | SV_to_ithread(pTHX_ SV *sv) |
439 | { |
fc04eb16 |
440 | /* Argument is a thread */ |
441 | if (SvROK(sv)) { |
442 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
443 | } |
444 | /* Argument is classname, therefore return current thread */ |
445 | return (S_ithread_get(aTHX)); |
47ba8780 |
446 | } |
447 | |
47ba8780 |
448 | |
fc04eb16 |
449 | /* threads->create() |
450 | * Called in context of parent thread. |
451 | */ |
f4cc38af |
452 | static SV * |
fc04eb16 |
453 | S_ithread_create( |
454 | pTHX_ SV *obj, |
455 | char *classname, |
456 | SV *init_function, |
514612b7 |
457 | IV stack_size, |
9d9ff5b1 |
458 | int gimme, |
fc04eb16 |
459 | SV *params) |
68795e93 |
460 | { |
fc04eb16 |
461 | ithread *thread; |
462 | CLONE_PARAMS clone_param; |
463 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
464 | |
fc04eb16 |
465 | SV **tmps_tmp = PL_tmps_stack; |
466 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
467 | #ifndef WIN32 |
fc04eb16 |
468 | int rc_stack_size = 0; |
469 | int rc_thread_create = 0; |
d94006e8 |
470 | #endif |
3b1c3273 |
471 | |
fc04eb16 |
472 | MUTEX_LOCK(&create_destruct_mutex); |
473 | |
474 | /* Allocate thread structure */ |
475 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
476 | if (!thread) { |
477 | MUTEX_UNLOCK(&create_destruct_mutex); |
478 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
479 | my_exit(1); |
480 | } |
481 | Zero(thread, 1, ithread); |
482 | |
483 | /* Add to threads list */ |
484 | thread->next = threads; |
485 | thread->prev = threads->prev; |
486 | threads->prev = thread; |
487 | thread->prev->next = thread; |
c05ae023 |
488 | |
fc04eb16 |
489 | /* Set count to 1 immediately in case thread exits before |
490 | * we return to caller! |
491 | */ |
492 | thread->count = 1; |
493 | |
494 | MUTEX_INIT(&thread->mutex); |
495 | thread->tid = tid_counter++; |
514612b7 |
496 | thread->stack_size = good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
497 | thread->gimme = gimme; |
fc04eb16 |
498 | |
499 | /* "Clone" our interpreter into the thread's interpreter. |
500 | * This gives thread access to "static data" and code. |
501 | */ |
502 | PerlIO_flush((PerlIO *)NULL); |
503 | S_ithread_set(aTHX_ thread); |
504 | |
505 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
506 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
507 | set during the clone */ |
3b1c3273 |
508 | |
47ba8780 |
509 | #ifdef WIN32 |
fc04eb16 |
510 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
511 | #else |
fc04eb16 |
512 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
513 | #endif |
47ba8780 |
514 | |
fc04eb16 |
515 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
516 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
517 | * context for the duration of our work for new interpreter. |
518 | */ |
519 | { |
520 | dTHXa(thread->interp); |
521 | |
522 | MY_CXT_CLONE; |
523 | |
524 | /* Here we remove END blocks since they should only run in the thread |
525 | * they are created |
526 | */ |
527 | SvREFCNT_dec(PL_endav); |
528 | PL_endav = newAV(); |
404aaa48 |
529 | |
f2e0bb91 |
530 | if (SvPOK(init_function)) { |
531 | thread->init_function = newSV(0); |
532 | sv_copypv(thread->init_function, init_function); |
533 | } else { |
534 | clone_param.flags = 0; |
535 | thread->init_function = sv_dup(init_function, &clone_param); |
536 | if (SvREFCNT(thread->init_function) == 0) { |
537 | SvREFCNT_inc(thread->init_function); |
538 | } |
fc04eb16 |
539 | } |
540 | |
541 | thread->params = sv_dup(params, &clone_param); |
542 | SvREFCNT_inc(thread->params); |
543 | |
544 | /* The code below checks that anything living on the tmps stack and |
545 | * has been cloned (so it lives in the ptr_table) has a refcount |
546 | * higher than 0. |
547 | * |
548 | * If the refcount is 0 it means that a something on the stack/context |
549 | * was holding a reference to it and since we init_stacks() in |
550 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
551 | * The reason it was cloned was that it lived on the @_ stack. |
552 | * |
553 | * Example of this can be found in bugreport 15837 where calls in the |
554 | * parameter list end up as a temp. |
555 | * |
556 | * One could argue that this fix should be in perl_clone. |
557 | */ |
558 | while (tmps_ix > 0) { |
559 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
560 | tmps_ix--; |
561 | if (sv && SvREFCNT(sv) == 0) { |
562 | SvREFCNT_inc(sv); |
563 | SvREFCNT_dec(sv); |
564 | } |
565 | } |
566 | |
567 | SvTEMP_off(thread->init_function); |
568 | ptr_table_free(PL_ptr_table); |
569 | PL_ptr_table = NULL; |
570 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
571 | } |
572 | S_ithread_set(aTHX_ current_thread); |
573 | PERL_SET_CONTEXT(aTHX); |
574 | |
575 | /* Create/start the thread */ |
47ba8780 |
576 | #ifdef WIN32 |
fc04eb16 |
577 | thread->handle = CreateThread(NULL, |
514612b7 |
578 | (DWORD)thread->stack_size, |
fc04eb16 |
579 | S_ithread_run, |
580 | (LPVOID)thread, |
514612b7 |
581 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
582 | &thread->thr); |
82c40bf6 |
583 | #else |
fc04eb16 |
584 | { |
585 | static pthread_attr_t attr; |
586 | static int attr_inited = 0; |
587 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
588 | if (! attr_inited) { |
589 | pthread_attr_init(&attr); |
590 | attr_inited = 1; |
591 | } |
592 | |
fa26028c |
593 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
594 | /* Threads start out joinable */ |
595 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
596 | # endif |
fc04eb16 |
597 | |
514612b7 |
598 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
599 | /* Set thread's stack size */ |
514612b7 |
600 | if (thread->stack_size > 0) { |
601 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
602 | } |
3eb37d38 |
603 | # endif |
604 | |
fc04eb16 |
605 | /* Create the thread */ |
606 | if (! rc_stack_size) { |
607 | # ifdef OLD_PTHREADS_API |
608 | rc_thread_create = pthread_create(&thread->thr, |
609 | attr, |
610 | S_ithread_run, |
611 | (void *)thread); |
612 | # else |
613 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
614 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
615 | # endif |
616 | rc_thread_create = pthread_create(&thread->thr, |
617 | &attr, |
618 | S_ithread_run, |
619 | (void *)thread); |
19a077f6 |
620 | # endif |
fc04eb16 |
621 | } |
514612b7 |
622 | |
623 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
624 | /* Try to get thread's actual stack size */ |
625 | { |
626 | size_t stacksize; |
58a3a76c |
627 | #ifdef HPUX1020 |
628 | stacksize = pthread_attr_getstacksize(attr); |
629 | #else |
630 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
631 | #endif |
632 | if (stacksize > 0) { |
514612b7 |
633 | thread->stack_size = (IV)stacksize; |
634 | } |
514612b7 |
635 | } |
636 | # endif |
fc04eb16 |
637 | } |
82c40bf6 |
638 | #endif |
bcd9ca9b |
639 | |
fc04eb16 |
640 | /* Check for errors */ |
d94006e8 |
641 | #ifdef WIN32 |
fc04eb16 |
642 | if (thread->handle == NULL) { |
d94006e8 |
643 | #else |
fc04eb16 |
644 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
645 | #endif |
fc04eb16 |
646 | MUTEX_UNLOCK(&create_destruct_mutex); |
647 | sv_2mortal(params); |
648 | S_ithread_destruct(aTHX_ thread); |
d94006e8 |
649 | #ifndef WIN32 |
514612b7 |
650 | if (ckWARN_d(WARN_THREADS)) { |
651 | if (rc_stack_size) |
652 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
653 | else |
654 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
655 | } |
d94006e8 |
656 | #endif |
fc04eb16 |
657 | return (&PL_sv_undef); |
658 | } |
659 | |
660 | active_threads++; |
5168baf3 |
661 | joinable_threads++; |
fc04eb16 |
662 | MUTEX_UNLOCK(&create_destruct_mutex); |
663 | |
664 | sv_2mortal(params); |
3b1c3273 |
665 | |
fc04eb16 |
666 | return (ithread_to_SV(aTHX_ obj, thread, classname, FALSE)); |
68795e93 |
667 | } |
47ba8780 |
668 | |
73e09c8f |
669 | #endif /* USE_ITHREADS */ |
e1c44605 |
670 | |
fcea4b7c |
671 | |
fc04eb16 |
672 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
673 | PROTOTYPES: DISABLE |
8222d950 |
674 | |
73e09c8f |
675 | #ifdef USE_ITHREADS |
676 | |
68795e93 |
677 | void |
f4cc38af |
678 | ithread_create(...) |
679 | PREINIT: |
680 | char *classname; |
514612b7 |
681 | ithread *thread; |
f4cc38af |
682 | SV *function_to_call; |
683 | AV *params; |
514612b7 |
684 | HV *specs; |
685 | IV stack_size; |
9d9ff5b1 |
686 | int context; |
687 | char *str; |
688 | char ch; |
514612b7 |
689 | int idx; |
f4cc38af |
690 | int ii; |
691 | CODE: |
514612b7 |
692 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
693 | if (--items < 2) |
694 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
695 | specs = (HV*)SvRV(ST(1)); |
696 | idx = 1; |
697 | } else { |
698 | if (items < 2) |
699 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
700 | specs = NULL; |
701 | idx = 0; |
702 | } |
f4cc38af |
703 | |
514612b7 |
704 | if (sv_isobject(ST(0))) { |
705 | /* $thr->create() */ |
706 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
707 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
708 | stack_size = thread->stack_size; |
709 | } else { |
710 | /* threads->create() */ |
711 | classname = (char *)SvPV_nolen(ST(0)); |
712 | stack_size = default_stack_size; |
713 | } |
714 | |
715 | function_to_call = ST(idx+1); |
716 | |
9d9ff5b1 |
717 | context = -1; |
514612b7 |
718 | if (specs) { |
719 | /* stack_size */ |
720 | if (hv_exists(specs, "stack", 5)) { |
721 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
722 | } else if (hv_exists(specs, "stacksize", 9)) { |
723 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
724 | } else if (hv_exists(specs, "stack_size", 10)) { |
725 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
726 | } |
9d9ff5b1 |
727 | |
728 | /* context */ |
729 | if (hv_exists(specs, "context", 7)) { |
730 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
731 | switch (*str) { |
732 | case 'a': |
733 | case 'A': |
734 | context = G_ARRAY; |
735 | break; |
736 | case 's': |
737 | case 'S': |
738 | context = G_SCALAR; |
739 | break; |
740 | case 'v': |
741 | case 'V': |
742 | context = G_VOID; |
743 | break; |
744 | default: |
745 | Perl_croak(aTHX_ "Invalid context: %s", str); |
746 | } |
747 | } else if (hv_exists(specs, "array", 5)) { |
748 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
749 | context = G_ARRAY; |
750 | } |
751 | } else if (hv_exists(specs, "scalar", 6)) { |
752 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
753 | context = G_SCALAR; |
754 | } |
755 | } else if (hv_exists(specs, "void", 4)) { |
756 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
757 | context = G_VOID; |
758 | } |
759 | } |
760 | } |
761 | if (context == -1) { |
762 | context = GIMME_V; /* Implicit context */ |
763 | } else { |
764 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
765 | } |
f4cc38af |
766 | |
767 | /* Function args */ |
768 | params = newAV(); |
769 | if (items > 2) { |
514612b7 |
770 | for (ii=2; ii < items ; ii++) { |
771 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
772 | } |
773 | } |
774 | |
775 | /* Create thread */ |
bcd9ca9b |
776 | ST(0) = sv_2mortal(S_ithread_create(aTHX_ Nullsv, |
514612b7 |
777 | classname, |
778 | function_to_call, |
779 | stack_size, |
9d9ff5b1 |
780 | context, |
514612b7 |
781 | newRV_noinc((SV*)params))); |
f4cc38af |
782 | /* XSRETURN(1); - implied */ |
783 | |
8222d950 |
784 | |
68795e93 |
785 | void |
f4cc38af |
786 | ithread_list(...) |
787 | PREINIT: |
788 | char *classname; |
fc04eb16 |
789 | ithread *thread; |
f4cc38af |
790 | int list_context; |
791 | IV count = 0; |
792 | PPCODE: |
793 | /* Class method only */ |
794 | if (SvROK(ST(0))) |
795 | Perl_croak(aTHX_ "Usage: threads->list()"); |
796 | classname = (char *)SvPV_nolen(ST(0)); |
797 | |
798 | /* Calling context */ |
799 | list_context = (GIMME_V == G_ARRAY); |
800 | |
801 | /* Walk through threads list */ |
802 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
803 | for (thread = threads->next; |
804 | thread != threads; |
805 | thread = thread->next) |
f4cc38af |
806 | { |
807 | /* Ignore detached or joined threads */ |
fc04eb16 |
808 | if (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)) { |
f4cc38af |
809 | continue; |
810 | } |
811 | /* Push object on stack if list context */ |
812 | if (list_context) { |
fc04eb16 |
813 | XPUSHs(sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
814 | } |
815 | count++; |
816 | } |
817 | MUTEX_UNLOCK(&create_destruct_mutex); |
818 | /* If scalar context, send back count */ |
819 | if (! list_context) { |
820 | XSRETURN_IV(count); |
821 | } |
678a9b6c |
822 | |
823 | |
824 | void |
f4cc38af |
825 | ithread_self(...) |
826 | PREINIT: |
827 | char *classname; |
fcea4b7c |
828 | ithread *thread; |
f4cc38af |
829 | CODE: |
830 | /* Class method only */ |
831 | if (SvROK(ST(0))) |
832 | Perl_croak(aTHX_ "Usage: threads->self()"); |
833 | classname = (char *)SvPV_nolen(ST(0)); |
834 | |
fcea4b7c |
835 | thread = S_ithread_get(aTHX); |
836 | |
837 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
838 | /* XSRETURN(1); - implied */ |
47ba8780 |
839 | |
47ba8780 |
840 | |
841 | void |
f4cc38af |
842 | ithread_tid(...) |
843 | PREINIT: |
844 | ithread *thread; |
845 | CODE: |
846 | thread = SV_to_ithread(aTHX_ ST(0)); |
847 | XST_mUV(0, thread->tid); |
848 | /* XSRETURN(1); - implied */ |
849 | |
e1c44605 |
850 | |
f9dff5f5 |
851 | void |
f4cc38af |
852 | ithread_join(...) |
853 | PREINIT: |
fcea4b7c |
854 | ithread *thread; |
855 | int join_err; |
f4cc38af |
856 | AV *params; |
857 | int len; |
858 | int ii; |
fcea4b7c |
859 | #ifdef WIN32 |
860 | DWORD waitcode; |
861 | #else |
862 | void *retval; |
863 | #endif |
f4cc38af |
864 | PPCODE: |
865 | /* Object method only */ |
866 | if (! sv_isobject(ST(0))) |
867 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
868 | |
fcea4b7c |
869 | /* Check if the thread is joinable */ |
870 | thread = SV_to_ithread(aTHX_ ST(0)); |
871 | MUTEX_LOCK(&thread->mutex); |
872 | join_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
873 | MUTEX_UNLOCK(&thread->mutex); |
874 | if (join_err) { |
875 | if (join_err & PERL_ITHR_DETACHED) { |
876 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
877 | } else { |
878 | Perl_croak(aTHX_ "Thread already joined"); |
879 | } |
880 | } |
881 | |
882 | /* Join the thread */ |
883 | #ifdef WIN32 |
884 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
885 | #else |
886 | pthread_join(thread->thr, &retval); |
887 | #endif |
888 | |
889 | MUTEX_LOCK(&thread->mutex); |
890 | /* Mark as joined */ |
891 | thread->state |= PERL_ITHR_JOINED; |
892 | |
893 | /* Get the return value from the call_sv */ |
894 | { |
895 | AV *params_copy; |
896 | PerlInterpreter *other_perl; |
897 | CLONE_PARAMS clone_params; |
898 | ithread *current_thread; |
899 | |
900 | params_copy = (AV *)SvRV(thread->params); |
901 | other_perl = thread->interp; |
902 | clone_params.stashes = newAV(); |
903 | clone_params.flags = CLONEf_JOIN_IN; |
904 | PL_ptr_table = ptr_table_new(); |
905 | current_thread = S_ithread_get(aTHX); |
906 | S_ithread_set(aTHX_ thread); |
907 | /* Ensure 'meaningful' addresses retain their meaning */ |
908 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
909 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
910 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
911 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
912 | S_ithread_set(aTHX_ current_thread); |
913 | SvREFCNT_dec(clone_params.stashes); |
914 | SvREFCNT_inc(params); |
915 | ptr_table_free(PL_ptr_table); |
916 | PL_ptr_table = NULL; |
917 | } |
918 | |
919 | /* We are finished with the thread */ |
920 | S_ithread_clear(aTHX_ thread); |
921 | MUTEX_UNLOCK(&thread->mutex); |
922 | |
923 | /* If no return values, then just return */ |
f4cc38af |
924 | if (! params) { |
925 | XSRETURN_UNDEF; |
926 | } |
927 | |
928 | /* Put return values on stack */ |
929 | len = (int)AvFILL(params); |
930 | for (ii=0; ii <= len; ii++) { |
931 | SV* param = av_shift(params); |
932 | XPUSHs(sv_2mortal(param)); |
933 | } |
934 | |
935 | /* Free return value array */ |
936 | SvREFCNT_dec(params); |
937 | |
938 | |
939 | void |
940 | ithread_yield(...) |
941 | CODE: |
942 | YIELD; |
943 | |
944 | |
945 | void |
946 | ithread_detach(...) |
947 | PREINIT: |
948 | ithread *thread; |
fcea4b7c |
949 | int detach_err; |
950 | int cleanup; |
f4cc38af |
951 | CODE: |
952 | thread = SV_to_ithread(aTHX_ ST(0)); |
fcea4b7c |
953 | MUTEX_LOCK(&thread->mutex); |
954 | |
955 | /* Check if the thread is detachable */ |
956 | if ((detach_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)))) { |
957 | MUTEX_UNLOCK(&thread->mutex); |
958 | if (detach_err & PERL_ITHR_DETACHED) { |
959 | Perl_croak(aTHX_ "Thread already detached"); |
960 | } else { |
961 | Perl_croak(aTHX_ "Cannot detach a joined thread"); |
962 | } |
963 | } |
964 | |
965 | /* Detach the thread */ |
966 | thread->state |= PERL_ITHR_DETACHED; |
967 | #ifdef WIN32 |
968 | /* Windows has no 'detach thread' function */ |
969 | #else |
970 | PERL_THREAD_DETACH(thread->thr); |
971 | #endif |
972 | /* Cleanup if finished */ |
973 | cleanup = (thread->state & PERL_ITHR_FINISHED); |
974 | MUTEX_UNLOCK(&thread->mutex); |
975 | |
976 | if (cleanup) |
977 | S_ithread_destruct(aTHX_ thread); |
5168baf3 |
978 | else { |
979 | MUTEX_LOCK(&create_destruct_mutex); |
980 | joinable_threads--; |
981 | MUTEX_UNLOCK(&create_destruct_mutex); |
982 | } |
f4cc38af |
983 | |
47ba8780 |
984 | |
985 | void |
c0003851 |
986 | ithread_kill(...) |
987 | PREINIT: |
988 | ithread *thread; |
989 | char *sig_name; |
990 | IV signal; |
991 | CODE: |
992 | /* Must have safe signals */ |
993 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
994 | Perl_croak(aTHX_ "Cannot signal other threads without safe signals"); |
995 | |
996 | /* Object method only */ |
997 | if (! sv_isobject(ST(0))) |
998 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
999 | |
1000 | /* Get thread */ |
1001 | thread = SV_to_ithread(aTHX_ ST(0)); |
1002 | |
1003 | /* Get signal */ |
1004 | sig_name = SvPV_nolen(ST(1)); |
1005 | if (isALPHA(*sig_name)) { |
1006 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') |
1007 | sig_name += 3; |
404aaa48 |
1008 | if ((signal = whichsig(sig_name)) < 0) |
c0003851 |
1009 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
1010 | } else |
1011 | signal = SvIV(ST(1)); |
1012 | |
1013 | /* Set the signal for the thread */ |
1014 | { |
1015 | dTHXa(thread->interp); |
1016 | PL_psig_pend[signal]++; |
1017 | PL_sig_pending = 1; |
1018 | } |
1019 | |
1020 | /* Return the thread to allow for method chaining */ |
1021 | ST(0) = ST(0); |
1022 | /* XSRETURN(1); - implied */ |
1023 | |
1024 | |
1025 | void |
f4cc38af |
1026 | ithread_DESTROY(...) |
1027 | CODE: |
fcea4b7c |
1028 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1029 | |
1030 | |
1031 | void |
1032 | ithread_equal(...) |
fc04eb16 |
1033 | PREINIT: |
1034 | int are_equal = 0; |
f4cc38af |
1035 | CODE: |
fc04eb16 |
1036 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1037 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1038 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1039 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1040 | are_equal = (thr1->tid == thr2->tid); |
1041 | } |
1042 | if (are_equal) { |
1043 | XST_mYES(0); |
f4cc38af |
1044 | } else { |
fc04eb16 |
1045 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1046 | XST_mIV(0, 0); |
1047 | } |
1048 | /* XSRETURN(1); - implied */ |
1049 | |
47ba8780 |
1050 | |
47ba8780 |
1051 | void |
f4cc38af |
1052 | ithread_object(...) |
1053 | PREINIT: |
1054 | char *classname; |
1055 | UV tid; |
fc04eb16 |
1056 | ithread *thread; |
f4cc38af |
1057 | int found = 0; |
1058 | CODE: |
1059 | /* Class method only */ |
1060 | if (SvROK(ST(0))) |
1061 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
1062 | classname = (char *)SvPV_nolen(ST(0)); |
1063 | |
1064 | if ((items < 2) || ! SvOK(ST(1))) { |
1065 | XSRETURN_UNDEF; |
1066 | } |
1067 | |
fc04eb16 |
1068 | /* threads->object($tid) */ |
f4cc38af |
1069 | tid = SvUV(ST(1)); |
1070 | |
1071 | /* Walk through threads list */ |
1072 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
1073 | for (thread = threads->next; |
1074 | thread != threads; |
1075 | thread = thread->next) |
f4cc38af |
1076 | { |
1077 | /* Look for TID, but ignore detached or joined threads */ |
fc04eb16 |
1078 | if ((thread->tid != tid) || |
1079 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
f4cc38af |
1080 | { |
1081 | continue; |
1082 | } |
1083 | /* Put object on stack */ |
fc04eb16 |
1084 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1085 | found = 1; |
1086 | break; |
1087 | } |
1088 | MUTEX_UNLOCK(&create_destruct_mutex); |
1089 | if (! found) { |
1090 | XSRETURN_UNDEF; |
1091 | } |
1092 | /* XSRETURN(1); - implied */ |
1093 | |
1094 | |
1095 | void |
1096 | ithread__handle(...); |
1097 | PREINIT: |
1098 | ithread *thread; |
1099 | CODE: |
1100 | thread = SV_to_ithread(aTHX_ ST(0)); |
1101 | #ifdef WIN32 |
fcea4b7c |
1102 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1103 | #else |
75ba4ae2 |
1104 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1105 | #endif |
1106 | /* XSRETURN(1); - implied */ |
68795e93 |
1107 | |
514612b7 |
1108 | |
1109 | void |
1110 | ithread_get_stack_size(...) |
1111 | PREINIT: |
1112 | IV stack_size; |
1113 | CODE: |
1114 | if (sv_isobject(ST(0))) { |
1115 | /* $thr->get_stack_size() */ |
1116 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1117 | stack_size = thread->stack_size; |
1118 | } else { |
1119 | /* threads->get_stack_size() */ |
1120 | stack_size = default_stack_size; |
1121 | } |
1122 | XST_mIV(0, stack_size); |
1123 | /* XSRETURN(1); - implied */ |
1124 | |
1125 | |
1126 | void |
1127 | ithread_set_stack_size(...) |
1128 | PREINIT: |
1129 | IV old_size; |
1130 | CODE: |
1131 | if (items != 2) |
1132 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
1133 | if (sv_isobject(ST(0))) |
1134 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
1135 | |
1136 | old_size = default_stack_size; |
1137 | default_stack_size = good_stack_size(aTHX_ SvIV(ST(1))); |
1138 | XST_mIV(0, old_size); |
1139 | /* XSRETURN(1); - implied */ |
1140 | |
73e09c8f |
1141 | #endif /* USE_ITHREADS */ |
1142 | |
fc04eb16 |
1143 | |
68795e93 |
1144 | BOOT: |
1145 | { |
73e09c8f |
1146 | #ifdef USE_ITHREADS |
fc04eb16 |
1147 | /* The 'main' thread is thread 0. |
1148 | * It is detached (unjoinable) and immortal. |
1149 | */ |
62375a60 |
1150 | |
fc04eb16 |
1151 | ithread *thread; |
1152 | MY_CXT_INIT; |
1153 | |
1154 | PL_perl_destruct_level = 2; |
1155 | MUTEX_INIT(&create_destruct_mutex); |
1156 | MUTEX_LOCK(&create_destruct_mutex); |
1157 | |
1158 | PL_threadhook = &Perl_ithread_hook; |
1159 | |
1160 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
1161 | if (! thread) { |
1162 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
1163 | my_exit(1); |
1164 | } |
1165 | Zero(thread, 1, ithread); |
1166 | |
1167 | PL_perl_destruct_level = 2; |
1168 | MUTEX_INIT(&thread->mutex); |
1169 | |
1170 | thread->tid = tid_counter++; /* Thread 0 */ |
1171 | |
1172 | /* Head of the threads list */ |
1173 | threads = thread; |
1174 | thread->next = thread; |
1175 | thread->prev = thread; |
1176 | |
1177 | thread->count = 1; /* Immortal */ |
1178 | |
1179 | thread->interp = aTHX; |
1180 | thread->state = PERL_ITHR_DETACHED; /* Detached */ |
514612b7 |
1181 | thread->stack_size = default_stack_size; |
fc04eb16 |
1182 | # ifdef WIN32 |
1183 | thread->thr = GetCurrentThreadId(); |
1184 | # else |
1185 | thread->thr = pthread_self(); |
1186 | # endif |
1187 | |
1188 | active_threads++; |
5168baf3 |
1189 | joinable_threads++; |
fc04eb16 |
1190 | |
1191 | S_ithread_set(aTHX_ thread); |
1192 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
1193 | #endif /* USE_ITHREADS */ |
68795e93 |
1194 | } |