Commit | Line | Data |
68795e93 |
1 | #define PERL_NO_GET_CONTEXT |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
4dcb9e53 |
5 | /* Workaround for XSUB.h bug under WIN32 */ |
6 | #ifdef WIN32 |
7 | # undef setjmp |
8 | # define setjmp(x) _setjmp(x) |
9 | #endif |
0f1612a7 |
10 | #ifdef HAS_PPPORT_H |
404aaa48 |
11 | # define NEED_PL_signals |
0f1612a7 |
12 | # define NEED_newRV_noinc |
13 | # define NEED_sv_2pv_nolen |
14 | # include "ppport.h" |
15 | # include "threads.h" |
16 | #endif |
68795e93 |
17 | |
73e09c8f |
18 | #ifdef USE_ITHREADS |
19 | |
68795e93 |
20 | #ifdef WIN32 |
fc04eb16 |
21 | # include <windows.h> |
514612b7 |
22 | /* Supposed to be in Winbase.h */ |
23 | # ifndef STACK_SIZE_PARAM_IS_A_RESERVATION |
24 | # define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000 |
25 | # endif |
fc04eb16 |
26 | # include <win32thread.h> |
68795e93 |
27 | #else |
fc04eb16 |
28 | # ifdef OS2 |
5c728af0 |
29 | typedef perl_os_thread pthread_t; |
fc04eb16 |
30 | # else |
31 | # include <pthread.h> |
32 | # endif |
33 | # include <thread.h> |
34 | # define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
35 | # ifdef OLD_PTHREADS_API |
36 | # define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
37 | # else |
38 | # define PERL_THREAD_DETACH(t) pthread_detach((t)) |
39 | # endif |
467f3f08 |
40 | #endif |
d305c2c9 |
41 | #if !defined(HAS_GETPAGESIZE) && defined(I_SYS_PARAM) |
42 | # include <sys/param.h> |
43 | #endif |
68795e93 |
44 | |
62375a60 |
45 | /* Values for 'state' member */ |
fc04eb16 |
46 | #define PERL_ITHR_JOINABLE 0 |
47 | #define PERL_ITHR_DETACHED 1 |
48 | #define PERL_ITHR_JOINED 2 |
49 | #define PERL_ITHR_FINISHED 4 |
50 | |
51 | typedef struct _ithread { |
52 | struct _ithread *next; /* Next thread in the list */ |
53 | struct _ithread *prev; /* Prev thread in the list */ |
54 | PerlInterpreter *interp; /* The threads interpreter */ |
55 | UV tid; /* Threads module's thread id */ |
56 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
9feacc09 |
57 | int count; /* How many SVs have a reference to us */ |
fc04eb16 |
58 | int state; /* Detached, joined, finished, etc. */ |
59 | int gimme; /* Context of create */ |
60 | SV *init_function; /* Code to run */ |
61 | SV *params; /* Args to pass function */ |
68795e93 |
62 | #ifdef WIN32 |
fc04eb16 |
63 | DWORD thr; /* OS's idea if thread id */ |
64 | HANDLE handle; /* OS's waitable handle */ |
68795e93 |
65 | #else |
fc04eb16 |
66 | pthread_t thr; /* OS's handle for the thread */ |
68795e93 |
67 | #endif |
514612b7 |
68 | IV stack_size; |
68795e93 |
69 | } ithread; |
70 | |
fc04eb16 |
71 | |
72 | /* Used by Perl interpreter for thread context switching */ |
628ab322 |
73 | #define MY_CXT_KEY "threads::_guts" XS_VERSION |
74 | |
75 | typedef struct { |
76 | ithread *thread; |
77 | } my_cxt_t; |
78 | |
79 | START_MY_CXT |
80 | |
81 | |
fc04eb16 |
82 | /* Linked list of all threads */ |
f4cc38af |
83 | static ithread *threads; |
68795e93 |
84 | |
fc04eb16 |
85 | /* Protects the creation and destruction of threads*/ |
86 | static perl_mutex create_destruct_mutex; |
68795e93 |
87 | |
f4cc38af |
88 | static UV tid_counter = 0; |
5168baf3 |
89 | static IV joinable_threads = 0; |
4dcb9e53 |
90 | static IV running_threads = 0; |
91 | static IV detached_threads = 0; |
514612b7 |
92 | #ifdef THREAD_CREATE_NEEDS_STACK |
93 | static IV default_stack_size = THREAD_CREATE_NEEDS_STACK; |
94 | #else |
95 | static IV default_stack_size = 0; |
96 | #endif |
97 | static IV page_size = 0; |
c05ae023 |
98 | |
99 | |
fc04eb16 |
100 | /* Used by Perl interpreter for thread context switching */ |
f4cc38af |
101 | static void |
fc04eb16 |
102 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
103 | { |
628ab322 |
104 | dMY_CXT; |
105 | MY_CXT.thread = thread; |
c05ae023 |
106 | } |
107 | |
fc04eb16 |
108 | static ithread * |
109 | S_ithread_get(pTHX) |
110 | { |
628ab322 |
111 | dMY_CXT; |
fc04eb16 |
112 | return (MY_CXT.thread); |
c05ae023 |
113 | } |
114 | |
115 | |
fc04eb16 |
116 | /* Free any data (such as the Perl interpreter) attached to an ithread |
117 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
118 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
119 | */ |
2e676467 |
120 | static void |
fc04eb16 |
121 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
122 | { |
123 | PerlInterpreter *interp; |
fc04eb16 |
124 | |
2e676467 |
125 | assert(thread->state & PERL_ITHR_FINISHED && |
f2cba68d |
126 | thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
2e676467 |
127 | |
128 | interp = thread->interp; |
129 | if (interp) { |
fc04eb16 |
130 | dTHXa(interp); |
131 | |
132 | PERL_SET_CONTEXT(interp); |
133 | S_ithread_set(aTHX_ thread); |
f2cba68d |
134 | |
fc04eb16 |
135 | SvREFCNT_dec(thread->params); |
136 | thread->params = Nullsv; |
2e676467 |
137 | |
fc04eb16 |
138 | perl_destruct(interp); |
139 | thread->interp = NULL; |
2e676467 |
140 | } |
141 | if (interp) |
fc04eb16 |
142 | perl_free(interp); |
143 | |
2e676467 |
144 | PERL_SET_CONTEXT(aTHX); |
145 | } |
146 | |
68795e93 |
147 | |
fc04eb16 |
148 | /* Free an ithread structure and any attached data if its count == 0 */ |
bcd9ca9b |
149 | static void |
fc04eb16 |
150 | S_ithread_destruct(pTHX_ ithread *thread) |
68795e93 |
151 | { |
385d56e4 |
152 | #ifdef WIN32 |
fc04eb16 |
153 | HANDLE handle; |
385d56e4 |
154 | #endif |
155 | |
fc04eb16 |
156 | MUTEX_LOCK(&thread->mutex); |
bcd9ca9b |
157 | |
fc04eb16 |
158 | /* Thread is still in use */ |
159 | if (thread->count != 0) { |
160 | MUTEX_UNLOCK(&thread->mutex); |
161 | return; |
162 | } |
9feacc09 |
163 | |
fc04eb16 |
164 | /* Main thread (0) is immortal and should never get here */ |
165 | assert(thread->tid != 0); |
166 | |
167 | /* Remove from circular list of threads */ |
4dcb9e53 |
168 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
169 | thread->next->prev = thread->prev; |
170 | thread->prev->next = thread->next; |
171 | thread->next = NULL; |
172 | thread->prev = NULL; |
173 | MUTEX_UNLOCK(&create_destruct_mutex); |
c2f2a82b |
174 | |
fc04eb16 |
175 | /* Thread is now disowned */ |
176 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
177 | |
178 | #ifdef WIN32 |
fc04eb16 |
179 | handle = thread->handle; |
180 | thread->handle = NULL; |
385d56e4 |
181 | #endif |
fc04eb16 |
182 | MUTEX_UNLOCK(&thread->mutex); |
183 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
184 | |
c7667023 |
185 | #ifdef WIN32 |
fc04eb16 |
186 | if (handle) |
187 | CloseHandle(handle); |
c7667023 |
188 | #endif |
385d56e4 |
189 | |
fc04eb16 |
190 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
191 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
192 | */ |
193 | aTHX = PL_curinterp; |
194 | PerlMemShared_free(thread); |
68795e93 |
195 | } |
196 | |
fc04eb16 |
197 | |
198 | /* Called on exit */ |
62375a60 |
199 | int |
200 | Perl_ithread_hook(pTHX) |
201 | { |
202 | int veto_cleanup = 0; |
203 | MUTEX_LOCK(&create_destruct_mutex); |
4dcb9e53 |
204 | if ((aTHX == PL_curinterp) && |
205 | (running_threads || joinable_threads)) |
206 | { |
fc04eb16 |
207 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
208 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
209 | IVdf " running and unjoined\n\t%" |
210 | IVdf " finished and unjoined\n\t%" |
211 | IVdf " running and detached\n", |
212 | running_threads, |
213 | joinable_threads, |
214 | detached_threads); |
fc04eb16 |
215 | } |
216 | veto_cleanup = 1; |
62375a60 |
217 | } |
218 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
219 | return (veto_cleanup); |
62375a60 |
220 | } |
221 | |
68795e93 |
222 | |
223 | /* MAGIC (in mg.h sense) hooks */ |
224 | |
225 | int |
226 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
227 | { |
fc04eb16 |
228 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
229 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
230 | SvIOK_on(sv); |
fc04eb16 |
231 | return (0); |
68795e93 |
232 | } |
233 | |
234 | int |
235 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
236 | { |
f2cba68d |
237 | ithread *thread = (ithread *)mg->mg_ptr; |
238 | int cleanup; |
239 | |
68795e93 |
240 | MUTEX_LOCK(&thread->mutex); |
f2cba68d |
241 | cleanup = ((--thread->count == 0) && |
242 | (thread->state & PERL_ITHR_FINISHED) && |
243 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
244 | MUTEX_UNLOCK(&thread->mutex); |
245 | |
246 | if (cleanup) |
247 | S_ithread_destruct(aTHX_ thread); |
fc04eb16 |
248 | return (0); |
68795e93 |
249 | } |
250 | |
251 | int |
252 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
253 | { |
fc04eb16 |
254 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
255 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
256 | thread->count++; |
257 | MUTEX_UNLOCK(&thread->mutex); |
fc04eb16 |
258 | return (0); |
68795e93 |
259 | } |
260 | |
261 | MGVTBL ithread_vtbl = { |
fc04eb16 |
262 | ithread_mg_get, /* get */ |
263 | 0, /* set */ |
264 | 0, /* len */ |
265 | 0, /* clear */ |
266 | ithread_mg_free, /* free */ |
267 | 0, /* copy */ |
268 | ithread_mg_dup /* dup */ |
68795e93 |
269 | }; |
270 | |
47ba8780 |
271 | |
514612b7 |
272 | /* Provided default, minimum and rational stack sizes */ |
273 | static IV |
274 | good_stack_size(pTHX_ IV stack_size) |
275 | { |
276 | /* Use default stack size if no stack size specified */ |
277 | if (! stack_size) |
278 | return (default_stack_size); |
279 | |
280 | #ifdef PTHREAD_STACK_MIN |
281 | /* Can't use less than minimum */ |
282 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
283 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
284 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
285 | } |
286 | return (PTHREAD_STACK_MIN); |
287 | } |
288 | #endif |
289 | |
290 | /* Round up to page size boundary */ |
291 | if (page_size <= 0) { |
d305c2c9 |
292 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
293 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
294 | # ifdef _SC_PAGESIZE |
514612b7 |
295 | page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
296 | # else |
514612b7 |
297 | page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
298 | # endif |
514612b7 |
299 | if ((long)page_size < 0) { |
300 | if (errno) { |
301 | SV * const error = get_sv("@", FALSE); |
302 | (void)SvUPGRADE(error, SVt_PV); |
303 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
304 | } else { |
305 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
306 | } |
307 | } |
d305c2c9 |
308 | #else |
309 | # ifdef HAS_GETPAGESIZE |
514612b7 |
310 | page_size = getpagesize(); |
514612b7 |
311 | # else |
d305c2c9 |
312 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
313 | page_size = PAGESIZE; |
314 | # else |
514612b7 |
315 | page_size = 8192; /* A conservative default */ |
d305c2c9 |
316 | # endif |
514612b7 |
317 | # endif |
d305c2c9 |
318 | if (page_size <= 0) |
319 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)page_size); |
514612b7 |
320 | #endif |
321 | } |
322 | stack_size = ((stack_size + (page_size - 1)) / page_size) * page_size; |
323 | |
324 | return (stack_size); |
325 | } |
326 | |
327 | |
fc04eb16 |
328 | /* Starts executing the thread. |
329 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
330 | */ |
47ba8780 |
331 | #ifdef WIN32 |
f4cc38af |
332 | static THREAD_RET_TYPE |
fc04eb16 |
333 | S_ithread_run(LPVOID arg) |
47ba8780 |
334 | #else |
fc04eb16 |
335 | static void * |
336 | S_ithread_run(void * arg) |
47ba8780 |
337 | #endif |
fc04eb16 |
338 | { |
339 | ithread *thread = (ithread *)arg; |
340 | int cleanup; |
f2cba68d |
341 | |
fc04eb16 |
342 | dTHXa(thread->interp); |
343 | PERL_SET_CONTEXT(thread->interp); |
344 | S_ithread_set(aTHX_ thread); |
47ba8780 |
345 | |
68795e93 |
346 | #if 0 |
fc04eb16 |
347 | /* Far from clear messing with ->thr child-side is a good idea */ |
348 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
349 | #ifdef WIN32 |
fc04eb16 |
350 | thread->thr = GetCurrentThreadId(); |
47ba8780 |
351 | #else |
fc04eb16 |
352 | thread->thr = pthread_self(); |
47ba8780 |
353 | #endif |
fc04eb16 |
354 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
355 | #endif |
47ba8780 |
356 | |
fc04eb16 |
357 | PL_perl_destruct_level = 2; |
f2cba68d |
358 | |
fc04eb16 |
359 | { |
360 | AV *params = (AV *)SvRV(thread->params); |
361 | int len = (int)av_len(params)+1; |
362 | int ii; |
4dcb9e53 |
363 | int jmp_rc = 0; |
364 | I32 oldscope; |
365 | |
366 | dJMPENV; |
fc04eb16 |
367 | |
368 | dSP; |
369 | ENTER; |
370 | SAVETMPS; |
371 | |
372 | /* Put args on the stack */ |
373 | PUSHMARK(SP); |
374 | for (ii=0; ii < len; ii++) { |
375 | XPUSHs(av_shift(params)); |
376 | } |
377 | PUTBACK; |
378 | |
4dcb9e53 |
379 | oldscope = PL_scopestack_ix; |
380 | JMPENV_PUSH(jmp_rc); |
381 | if (jmp_rc == 0) { |
382 | /* Run the specified function */ |
383 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
384 | } else if (jmp_rc == 2) { |
385 | while (PL_scopestack_ix > oldscope) { |
386 | LEAVE; |
387 | } |
388 | } |
389 | JMPENV_POP; |
fc04eb16 |
390 | |
391 | /* Remove args from stack and put back in params array */ |
392 | SPAGAIN; |
393 | for (ii=len-1; ii >= 0; ii--) { |
394 | SV *sv = POPs; |
4dcb9e53 |
395 | if (jmp_rc == 0) { |
396 | av_store(params, ii, SvREFCNT_inc(sv)); |
397 | } |
fc04eb16 |
398 | } |
399 | |
4dcb9e53 |
400 | FREETMPS; |
401 | LEAVE; |
402 | |
fc04eb16 |
403 | /* Check for failure */ |
404 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
405 | oldscope = PL_scopestack_ix; |
406 | JMPENV_PUSH(jmp_rc); |
407 | if (jmp_rc == 0) { |
408 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
409 | } else if (jmp_rc == 2) { |
410 | while (PL_scopestack_ix > oldscope) { |
411 | LEAVE; |
412 | } |
413 | } |
414 | JMPENV_POP; |
fc04eb16 |
415 | } |
416 | |
fc04eb16 |
417 | /* Release function ref */ |
418 | SvREFCNT_dec(thread->init_function); |
419 | thread->init_function = Nullsv; |
420 | } |
62375a60 |
421 | |
fc04eb16 |
422 | PerlIO_flush((PerlIO *)NULL); |
423 | |
424 | MUTEX_LOCK(&thread->mutex); |
425 | /* Mark as finished */ |
426 | thread->state |= PERL_ITHR_FINISHED; |
427 | /* Cleanup if detached */ |
428 | cleanup = (thread->state & PERL_ITHR_DETACHED); |
429 | MUTEX_UNLOCK(&thread->mutex); |
430 | |
4dcb9e53 |
431 | if (cleanup) { |
432 | MUTEX_LOCK(&create_destruct_mutex); |
433 | detached_threads--; |
434 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
435 | S_ithread_destruct(aTHX_ thread); |
4dcb9e53 |
436 | } else { |
437 | MUTEX_LOCK(&create_destruct_mutex); |
438 | running_threads--; |
439 | joinable_threads++; |
440 | MUTEX_UNLOCK(&create_destruct_mutex); |
5168baf3 |
441 | } |
91604d21 |
442 | |
47ba8780 |
443 | #ifdef WIN32 |
fc04eb16 |
444 | return ((DWORD)0); |
e8f2bb9a |
445 | #else |
fc04eb16 |
446 | return (0); |
47ba8780 |
447 | #endif |
68795e93 |
448 | } |
449 | |
fc04eb16 |
450 | |
451 | /* Type conversion helper functions */ |
f4cc38af |
452 | static SV * |
68795e93 |
453 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
454 | { |
455 | SV *sv; |
456 | MAGIC *mg; |
fc04eb16 |
457 | |
68795e93 |
458 | if (inc) { |
fc04eb16 |
459 | MUTEX_LOCK(&thread->mutex); |
460 | thread->count++; |
461 | MUTEX_UNLOCK(&thread->mutex); |
462 | } |
463 | |
464 | if (! obj) { |
465 | obj = newSV(0); |
68795e93 |
466 | } |
fc04eb16 |
467 | |
468 | sv = newSVrv(obj, classname); |
469 | sv_setiv(sv, PTR2IV(thread)); |
470 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
471 | mg->mg_flags |= MGf_DUP; |
472 | SvREADONLY_on(sv); |
fc04eb16 |
473 | |
474 | return (obj); |
68795e93 |
475 | } |
47ba8780 |
476 | |
f4cc38af |
477 | static ithread * |
68795e93 |
478 | SV_to_ithread(pTHX_ SV *sv) |
479 | { |
fc04eb16 |
480 | /* Argument is a thread */ |
481 | if (SvROK(sv)) { |
482 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
483 | } |
484 | /* Argument is classname, therefore return current thread */ |
485 | return (S_ithread_get(aTHX)); |
47ba8780 |
486 | } |
487 | |
47ba8780 |
488 | |
fc04eb16 |
489 | /* threads->create() |
490 | * Called in context of parent thread. |
491 | */ |
f4cc38af |
492 | static SV * |
fc04eb16 |
493 | S_ithread_create( |
494 | pTHX_ SV *obj, |
495 | char *classname, |
496 | SV *init_function, |
514612b7 |
497 | IV stack_size, |
9d9ff5b1 |
498 | int gimme, |
fc04eb16 |
499 | SV *params) |
68795e93 |
500 | { |
fc04eb16 |
501 | ithread *thread; |
502 | CLONE_PARAMS clone_param; |
503 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
504 | |
fc04eb16 |
505 | SV **tmps_tmp = PL_tmps_stack; |
506 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
507 | #ifndef WIN32 |
fc04eb16 |
508 | int rc_stack_size = 0; |
509 | int rc_thread_create = 0; |
d94006e8 |
510 | #endif |
3b1c3273 |
511 | |
fc04eb16 |
512 | MUTEX_LOCK(&create_destruct_mutex); |
513 | |
514 | /* Allocate thread structure */ |
515 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
516 | if (!thread) { |
517 | MUTEX_UNLOCK(&create_destruct_mutex); |
518 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
519 | my_exit(1); |
520 | } |
521 | Zero(thread, 1, ithread); |
522 | |
523 | /* Add to threads list */ |
524 | thread->next = threads; |
525 | thread->prev = threads->prev; |
526 | threads->prev = thread; |
527 | thread->prev->next = thread; |
c05ae023 |
528 | |
fc04eb16 |
529 | /* Set count to 1 immediately in case thread exits before |
530 | * we return to caller! |
531 | */ |
532 | thread->count = 1; |
533 | |
534 | MUTEX_INIT(&thread->mutex); |
535 | thread->tid = tid_counter++; |
514612b7 |
536 | thread->stack_size = good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
537 | thread->gimme = gimme; |
fc04eb16 |
538 | |
539 | /* "Clone" our interpreter into the thread's interpreter. |
540 | * This gives thread access to "static data" and code. |
541 | */ |
542 | PerlIO_flush((PerlIO *)NULL); |
543 | S_ithread_set(aTHX_ thread); |
544 | |
545 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
546 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
547 | set during the clone */ |
3b1c3273 |
548 | |
47ba8780 |
549 | #ifdef WIN32 |
fc04eb16 |
550 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
551 | #else |
fc04eb16 |
552 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
553 | #endif |
47ba8780 |
554 | |
fc04eb16 |
555 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
556 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
557 | * context for the duration of our work for new interpreter. |
558 | */ |
559 | { |
560 | dTHXa(thread->interp); |
561 | |
562 | MY_CXT_CLONE; |
563 | |
564 | /* Here we remove END blocks since they should only run in the thread |
565 | * they are created |
566 | */ |
567 | SvREFCNT_dec(PL_endav); |
568 | PL_endav = newAV(); |
404aaa48 |
569 | |
f2e0bb91 |
570 | if (SvPOK(init_function)) { |
571 | thread->init_function = newSV(0); |
572 | sv_copypv(thread->init_function, init_function); |
573 | } else { |
574 | clone_param.flags = 0; |
575 | thread->init_function = sv_dup(init_function, &clone_param); |
576 | if (SvREFCNT(thread->init_function) == 0) { |
577 | SvREFCNT_inc(thread->init_function); |
578 | } |
fc04eb16 |
579 | } |
580 | |
581 | thread->params = sv_dup(params, &clone_param); |
582 | SvREFCNT_inc(thread->params); |
583 | |
584 | /* The code below checks that anything living on the tmps stack and |
585 | * has been cloned (so it lives in the ptr_table) has a refcount |
586 | * higher than 0. |
587 | * |
588 | * If the refcount is 0 it means that a something on the stack/context |
589 | * was holding a reference to it and since we init_stacks() in |
590 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
591 | * The reason it was cloned was that it lived on the @_ stack. |
592 | * |
593 | * Example of this can be found in bugreport 15837 where calls in the |
594 | * parameter list end up as a temp. |
595 | * |
596 | * One could argue that this fix should be in perl_clone. |
597 | */ |
598 | while (tmps_ix > 0) { |
599 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
600 | tmps_ix--; |
601 | if (sv && SvREFCNT(sv) == 0) { |
602 | SvREFCNT_inc(sv); |
603 | SvREFCNT_dec(sv); |
604 | } |
605 | } |
606 | |
607 | SvTEMP_off(thread->init_function); |
608 | ptr_table_free(PL_ptr_table); |
609 | PL_ptr_table = NULL; |
610 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
611 | } |
612 | S_ithread_set(aTHX_ current_thread); |
613 | PERL_SET_CONTEXT(aTHX); |
614 | |
615 | /* Create/start the thread */ |
47ba8780 |
616 | #ifdef WIN32 |
fc04eb16 |
617 | thread->handle = CreateThread(NULL, |
514612b7 |
618 | (DWORD)thread->stack_size, |
fc04eb16 |
619 | S_ithread_run, |
620 | (LPVOID)thread, |
514612b7 |
621 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
622 | &thread->thr); |
82c40bf6 |
623 | #else |
fc04eb16 |
624 | { |
625 | static pthread_attr_t attr; |
626 | static int attr_inited = 0; |
627 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
628 | if (! attr_inited) { |
629 | pthread_attr_init(&attr); |
630 | attr_inited = 1; |
631 | } |
632 | |
fa26028c |
633 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
634 | /* Threads start out joinable */ |
635 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
636 | # endif |
fc04eb16 |
637 | |
514612b7 |
638 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
639 | /* Set thread's stack size */ |
514612b7 |
640 | if (thread->stack_size > 0) { |
641 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
642 | } |
3eb37d38 |
643 | # endif |
644 | |
fc04eb16 |
645 | /* Create the thread */ |
646 | if (! rc_stack_size) { |
647 | # ifdef OLD_PTHREADS_API |
648 | rc_thread_create = pthread_create(&thread->thr, |
649 | attr, |
650 | S_ithread_run, |
651 | (void *)thread); |
652 | # else |
653 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
654 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
655 | # endif |
656 | rc_thread_create = pthread_create(&thread->thr, |
657 | &attr, |
658 | S_ithread_run, |
659 | (void *)thread); |
19a077f6 |
660 | # endif |
fc04eb16 |
661 | } |
514612b7 |
662 | |
663 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
664 | /* Try to get thread's actual stack size */ |
665 | { |
666 | size_t stacksize; |
58a3a76c |
667 | #ifdef HPUX1020 |
668 | stacksize = pthread_attr_getstacksize(attr); |
669 | #else |
670 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
671 | #endif |
672 | if (stacksize > 0) { |
514612b7 |
673 | thread->stack_size = (IV)stacksize; |
674 | } |
514612b7 |
675 | } |
676 | # endif |
fc04eb16 |
677 | } |
82c40bf6 |
678 | #endif |
bcd9ca9b |
679 | |
fc04eb16 |
680 | /* Check for errors */ |
d94006e8 |
681 | #ifdef WIN32 |
fc04eb16 |
682 | if (thread->handle == NULL) { |
d94006e8 |
683 | #else |
fc04eb16 |
684 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
685 | #endif |
fc04eb16 |
686 | MUTEX_UNLOCK(&create_destruct_mutex); |
687 | sv_2mortal(params); |
688 | S_ithread_destruct(aTHX_ thread); |
d94006e8 |
689 | #ifndef WIN32 |
514612b7 |
690 | if (ckWARN_d(WARN_THREADS)) { |
691 | if (rc_stack_size) |
692 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
693 | else |
694 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
695 | } |
d94006e8 |
696 | #endif |
fc04eb16 |
697 | return (&PL_sv_undef); |
698 | } |
699 | |
4dcb9e53 |
700 | running_threads++; |
fc04eb16 |
701 | MUTEX_UNLOCK(&create_destruct_mutex); |
702 | |
703 | sv_2mortal(params); |
3b1c3273 |
704 | |
fc04eb16 |
705 | return (ithread_to_SV(aTHX_ obj, thread, classname, FALSE)); |
68795e93 |
706 | } |
47ba8780 |
707 | |
73e09c8f |
708 | #endif /* USE_ITHREADS */ |
e1c44605 |
709 | |
fcea4b7c |
710 | |
fc04eb16 |
711 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
712 | PROTOTYPES: DISABLE |
8222d950 |
713 | |
73e09c8f |
714 | #ifdef USE_ITHREADS |
715 | |
68795e93 |
716 | void |
f4cc38af |
717 | ithread_create(...) |
718 | PREINIT: |
719 | char *classname; |
514612b7 |
720 | ithread *thread; |
f4cc38af |
721 | SV *function_to_call; |
722 | AV *params; |
514612b7 |
723 | HV *specs; |
724 | IV stack_size; |
9d9ff5b1 |
725 | int context; |
726 | char *str; |
514612b7 |
727 | int idx; |
f4cc38af |
728 | int ii; |
729 | CODE: |
514612b7 |
730 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
731 | if (--items < 2) |
732 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
733 | specs = (HV*)SvRV(ST(1)); |
734 | idx = 1; |
735 | } else { |
736 | if (items < 2) |
737 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
738 | specs = NULL; |
739 | idx = 0; |
740 | } |
f4cc38af |
741 | |
514612b7 |
742 | if (sv_isobject(ST(0))) { |
743 | /* $thr->create() */ |
744 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
745 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
746 | stack_size = thread->stack_size; |
747 | } else { |
748 | /* threads->create() */ |
749 | classname = (char *)SvPV_nolen(ST(0)); |
750 | stack_size = default_stack_size; |
751 | } |
752 | |
753 | function_to_call = ST(idx+1); |
754 | |
9d9ff5b1 |
755 | context = -1; |
514612b7 |
756 | if (specs) { |
757 | /* stack_size */ |
758 | if (hv_exists(specs, "stack", 5)) { |
759 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
760 | } else if (hv_exists(specs, "stacksize", 9)) { |
761 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
762 | } else if (hv_exists(specs, "stack_size", 10)) { |
763 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
764 | } |
9d9ff5b1 |
765 | |
766 | /* context */ |
767 | if (hv_exists(specs, "context", 7)) { |
768 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
769 | switch (*str) { |
770 | case 'a': |
771 | case 'A': |
772 | context = G_ARRAY; |
773 | break; |
774 | case 's': |
775 | case 'S': |
776 | context = G_SCALAR; |
777 | break; |
778 | case 'v': |
779 | case 'V': |
780 | context = G_VOID; |
781 | break; |
782 | default: |
783 | Perl_croak(aTHX_ "Invalid context: %s", str); |
784 | } |
785 | } else if (hv_exists(specs, "array", 5)) { |
786 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
787 | context = G_ARRAY; |
788 | } |
789 | } else if (hv_exists(specs, "scalar", 6)) { |
790 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
791 | context = G_SCALAR; |
792 | } |
793 | } else if (hv_exists(specs, "void", 4)) { |
794 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
795 | context = G_VOID; |
796 | } |
797 | } |
798 | } |
799 | if (context == -1) { |
800 | context = GIMME_V; /* Implicit context */ |
801 | } else { |
802 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
803 | } |
f4cc38af |
804 | |
805 | /* Function args */ |
806 | params = newAV(); |
807 | if (items > 2) { |
514612b7 |
808 | for (ii=2; ii < items ; ii++) { |
809 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
810 | } |
811 | } |
812 | |
813 | /* Create thread */ |
bcd9ca9b |
814 | ST(0) = sv_2mortal(S_ithread_create(aTHX_ Nullsv, |
514612b7 |
815 | classname, |
816 | function_to_call, |
817 | stack_size, |
9d9ff5b1 |
818 | context, |
514612b7 |
819 | newRV_noinc((SV*)params))); |
f4cc38af |
820 | /* XSRETURN(1); - implied */ |
821 | |
8222d950 |
822 | |
68795e93 |
823 | void |
f4cc38af |
824 | ithread_list(...) |
825 | PREINIT: |
826 | char *classname; |
fc04eb16 |
827 | ithread *thread; |
f4cc38af |
828 | int list_context; |
829 | IV count = 0; |
830 | PPCODE: |
831 | /* Class method only */ |
832 | if (SvROK(ST(0))) |
833 | Perl_croak(aTHX_ "Usage: threads->list()"); |
834 | classname = (char *)SvPV_nolen(ST(0)); |
835 | |
836 | /* Calling context */ |
837 | list_context = (GIMME_V == G_ARRAY); |
838 | |
839 | /* Walk through threads list */ |
840 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
841 | for (thread = threads->next; |
842 | thread != threads; |
843 | thread = thread->next) |
f4cc38af |
844 | { |
845 | /* Ignore detached or joined threads */ |
fc04eb16 |
846 | if (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)) { |
f4cc38af |
847 | continue; |
848 | } |
849 | /* Push object on stack if list context */ |
850 | if (list_context) { |
fc04eb16 |
851 | XPUSHs(sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
852 | } |
853 | count++; |
854 | } |
855 | MUTEX_UNLOCK(&create_destruct_mutex); |
856 | /* If scalar context, send back count */ |
857 | if (! list_context) { |
858 | XSRETURN_IV(count); |
859 | } |
678a9b6c |
860 | |
861 | |
862 | void |
f4cc38af |
863 | ithread_self(...) |
864 | PREINIT: |
865 | char *classname; |
fcea4b7c |
866 | ithread *thread; |
f4cc38af |
867 | CODE: |
868 | /* Class method only */ |
869 | if (SvROK(ST(0))) |
870 | Perl_croak(aTHX_ "Usage: threads->self()"); |
871 | classname = (char *)SvPV_nolen(ST(0)); |
872 | |
fcea4b7c |
873 | thread = S_ithread_get(aTHX); |
874 | |
875 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
876 | /* XSRETURN(1); - implied */ |
47ba8780 |
877 | |
47ba8780 |
878 | |
879 | void |
f4cc38af |
880 | ithread_tid(...) |
881 | PREINIT: |
882 | ithread *thread; |
883 | CODE: |
884 | thread = SV_to_ithread(aTHX_ ST(0)); |
885 | XST_mUV(0, thread->tid); |
886 | /* XSRETURN(1); - implied */ |
887 | |
e1c44605 |
888 | |
f9dff5f5 |
889 | void |
f4cc38af |
890 | ithread_join(...) |
891 | PREINIT: |
fcea4b7c |
892 | ithread *thread; |
893 | int join_err; |
f4cc38af |
894 | AV *params; |
895 | int len; |
896 | int ii; |
fcea4b7c |
897 | #ifdef WIN32 |
898 | DWORD waitcode; |
899 | #else |
900 | void *retval; |
901 | #endif |
f4cc38af |
902 | PPCODE: |
903 | /* Object method only */ |
904 | if (! sv_isobject(ST(0))) |
905 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
906 | |
fcea4b7c |
907 | /* Check if the thread is joinable */ |
908 | thread = SV_to_ithread(aTHX_ ST(0)); |
909 | MUTEX_LOCK(&thread->mutex); |
910 | join_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
911 | MUTEX_UNLOCK(&thread->mutex); |
912 | if (join_err) { |
913 | if (join_err & PERL_ITHR_DETACHED) { |
914 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
915 | } else { |
916 | Perl_croak(aTHX_ "Thread already joined"); |
917 | } |
918 | } |
919 | |
920 | /* Join the thread */ |
921 | #ifdef WIN32 |
922 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
923 | #else |
924 | pthread_join(thread->thr, &retval); |
925 | #endif |
926 | |
927 | MUTEX_LOCK(&thread->mutex); |
928 | /* Mark as joined */ |
929 | thread->state |= PERL_ITHR_JOINED; |
930 | |
931 | /* Get the return value from the call_sv */ |
932 | { |
933 | AV *params_copy; |
934 | PerlInterpreter *other_perl; |
935 | CLONE_PARAMS clone_params; |
936 | ithread *current_thread; |
937 | |
938 | params_copy = (AV *)SvRV(thread->params); |
939 | other_perl = thread->interp; |
940 | clone_params.stashes = newAV(); |
941 | clone_params.flags = CLONEf_JOIN_IN; |
942 | PL_ptr_table = ptr_table_new(); |
943 | current_thread = S_ithread_get(aTHX); |
944 | S_ithread_set(aTHX_ thread); |
945 | /* Ensure 'meaningful' addresses retain their meaning */ |
946 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
947 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
948 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
949 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
950 | S_ithread_set(aTHX_ current_thread); |
951 | SvREFCNT_dec(clone_params.stashes); |
952 | SvREFCNT_inc(params); |
953 | ptr_table_free(PL_ptr_table); |
954 | PL_ptr_table = NULL; |
955 | } |
956 | |
957 | /* We are finished with the thread */ |
958 | S_ithread_clear(aTHX_ thread); |
959 | MUTEX_UNLOCK(&thread->mutex); |
960 | |
4dcb9e53 |
961 | MUTEX_LOCK(&create_destruct_mutex); |
962 | joinable_threads--; |
963 | MUTEX_UNLOCK(&create_destruct_mutex); |
964 | |
fcea4b7c |
965 | /* If no return values, then just return */ |
f4cc38af |
966 | if (! params) { |
967 | XSRETURN_UNDEF; |
968 | } |
969 | |
970 | /* Put return values on stack */ |
971 | len = (int)AvFILL(params); |
972 | for (ii=0; ii <= len; ii++) { |
973 | SV* param = av_shift(params); |
974 | XPUSHs(sv_2mortal(param)); |
975 | } |
976 | |
977 | /* Free return value array */ |
978 | SvREFCNT_dec(params); |
979 | |
980 | |
981 | void |
982 | ithread_yield(...) |
983 | CODE: |
984 | YIELD; |
985 | |
986 | |
987 | void |
988 | ithread_detach(...) |
989 | PREINIT: |
990 | ithread *thread; |
fcea4b7c |
991 | int detach_err; |
992 | int cleanup; |
f4cc38af |
993 | CODE: |
994 | thread = SV_to_ithread(aTHX_ ST(0)); |
fcea4b7c |
995 | MUTEX_LOCK(&thread->mutex); |
996 | |
997 | /* Check if the thread is detachable */ |
998 | if ((detach_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)))) { |
999 | MUTEX_UNLOCK(&thread->mutex); |
1000 | if (detach_err & PERL_ITHR_DETACHED) { |
1001 | Perl_croak(aTHX_ "Thread already detached"); |
1002 | } else { |
1003 | Perl_croak(aTHX_ "Cannot detach a joined thread"); |
1004 | } |
1005 | } |
1006 | |
1007 | /* Detach the thread */ |
1008 | thread->state |= PERL_ITHR_DETACHED; |
1009 | #ifdef WIN32 |
1010 | /* Windows has no 'detach thread' function */ |
1011 | #else |
1012 | PERL_THREAD_DETACH(thread->thr); |
1013 | #endif |
1014 | /* Cleanup if finished */ |
1015 | cleanup = (thread->state & PERL_ITHR_FINISHED); |
1016 | MUTEX_UNLOCK(&thread->mutex); |
1017 | |
4dcb9e53 |
1018 | MUTEX_LOCK(&create_destruct_mutex); |
1019 | if (cleanup) { |
1020 | joinable_threads--; |
1021 | } else { |
1022 | running_threads--; |
1023 | detached_threads++; |
1024 | } |
1025 | MUTEX_UNLOCK(&create_destruct_mutex); |
1026 | |
1027 | if (cleanup) { |
fcea4b7c |
1028 | S_ithread_destruct(aTHX_ thread); |
4dcb9e53 |
1029 | } |
f4cc38af |
1030 | |
47ba8780 |
1031 | |
1032 | void |
c0003851 |
1033 | ithread_kill(...) |
1034 | PREINIT: |
1035 | ithread *thread; |
1036 | char *sig_name; |
1037 | IV signal; |
1038 | CODE: |
1039 | /* Must have safe signals */ |
1040 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
4dcb9e53 |
1041 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
c0003851 |
1042 | |
1043 | /* Object method only */ |
1044 | if (! sv_isobject(ST(0))) |
1045 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
1046 | |
c0003851 |
1047 | /* Get signal */ |
1048 | sig_name = SvPV_nolen(ST(1)); |
1049 | if (isALPHA(*sig_name)) { |
1050 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') |
1051 | sig_name += 3; |
404aaa48 |
1052 | if ((signal = whichsig(sig_name)) < 0) |
c0003851 |
1053 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
1054 | } else |
1055 | signal = SvIV(ST(1)); |
1056 | |
1057 | /* Set the signal for the thread */ |
4dcb9e53 |
1058 | thread = SV_to_ithread(aTHX_ ST(0)); |
1059 | MUTEX_LOCK(&thread->mutex); |
c0003851 |
1060 | { |
1061 | dTHXa(thread->interp); |
1062 | PL_psig_pend[signal]++; |
1063 | PL_sig_pending = 1; |
1064 | } |
4dcb9e53 |
1065 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1066 | |
1067 | /* Return the thread to allow for method chaining */ |
1068 | ST(0) = ST(0); |
1069 | /* XSRETURN(1); - implied */ |
1070 | |
1071 | |
1072 | void |
f4cc38af |
1073 | ithread_DESTROY(...) |
1074 | CODE: |
fcea4b7c |
1075 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1076 | |
1077 | |
1078 | void |
1079 | ithread_equal(...) |
fc04eb16 |
1080 | PREINIT: |
1081 | int are_equal = 0; |
f4cc38af |
1082 | CODE: |
fc04eb16 |
1083 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1084 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1085 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1086 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1087 | are_equal = (thr1->tid == thr2->tid); |
1088 | } |
1089 | if (are_equal) { |
1090 | XST_mYES(0); |
f4cc38af |
1091 | } else { |
fc04eb16 |
1092 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1093 | XST_mIV(0, 0); |
1094 | } |
1095 | /* XSRETURN(1); - implied */ |
1096 | |
47ba8780 |
1097 | |
47ba8780 |
1098 | void |
f4cc38af |
1099 | ithread_object(...) |
1100 | PREINIT: |
1101 | char *classname; |
1102 | UV tid; |
fc04eb16 |
1103 | ithread *thread; |
f4cc38af |
1104 | int found = 0; |
1105 | CODE: |
1106 | /* Class method only */ |
1107 | if (SvROK(ST(0))) |
1108 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
1109 | classname = (char *)SvPV_nolen(ST(0)); |
1110 | |
1111 | if ((items < 2) || ! SvOK(ST(1))) { |
1112 | XSRETURN_UNDEF; |
1113 | } |
1114 | |
fc04eb16 |
1115 | /* threads->object($tid) */ |
f4cc38af |
1116 | tid = SvUV(ST(1)); |
1117 | |
1118 | /* Walk through threads list */ |
1119 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
1120 | for (thread = threads->next; |
1121 | thread != threads; |
1122 | thread = thread->next) |
f4cc38af |
1123 | { |
1124 | /* Look for TID, but ignore detached or joined threads */ |
fc04eb16 |
1125 | if ((thread->tid != tid) || |
1126 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
f4cc38af |
1127 | { |
1128 | continue; |
1129 | } |
1130 | /* Put object on stack */ |
fc04eb16 |
1131 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1132 | found = 1; |
1133 | break; |
1134 | } |
1135 | MUTEX_UNLOCK(&create_destruct_mutex); |
1136 | if (! found) { |
1137 | XSRETURN_UNDEF; |
1138 | } |
1139 | /* XSRETURN(1); - implied */ |
1140 | |
1141 | |
1142 | void |
1143 | ithread__handle(...); |
1144 | PREINIT: |
1145 | ithread *thread; |
1146 | CODE: |
1147 | thread = SV_to_ithread(aTHX_ ST(0)); |
1148 | #ifdef WIN32 |
fcea4b7c |
1149 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1150 | #else |
75ba4ae2 |
1151 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1152 | #endif |
1153 | /* XSRETURN(1); - implied */ |
68795e93 |
1154 | |
514612b7 |
1155 | |
1156 | void |
1157 | ithread_get_stack_size(...) |
1158 | PREINIT: |
1159 | IV stack_size; |
1160 | CODE: |
1161 | if (sv_isobject(ST(0))) { |
1162 | /* $thr->get_stack_size() */ |
1163 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1164 | stack_size = thread->stack_size; |
1165 | } else { |
1166 | /* threads->get_stack_size() */ |
1167 | stack_size = default_stack_size; |
1168 | } |
1169 | XST_mIV(0, stack_size); |
1170 | /* XSRETURN(1); - implied */ |
1171 | |
1172 | |
1173 | void |
1174 | ithread_set_stack_size(...) |
1175 | PREINIT: |
1176 | IV old_size; |
1177 | CODE: |
1178 | if (items != 2) |
1179 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
1180 | if (sv_isobject(ST(0))) |
1181 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
1182 | |
1183 | old_size = default_stack_size; |
1184 | default_stack_size = good_stack_size(aTHX_ SvIV(ST(1))); |
1185 | XST_mIV(0, old_size); |
1186 | /* XSRETURN(1); - implied */ |
1187 | |
73e09c8f |
1188 | #endif /* USE_ITHREADS */ |
1189 | |
fc04eb16 |
1190 | |
68795e93 |
1191 | BOOT: |
1192 | { |
73e09c8f |
1193 | #ifdef USE_ITHREADS |
fc04eb16 |
1194 | /* The 'main' thread is thread 0. |
1195 | * It is detached (unjoinable) and immortal. |
1196 | */ |
62375a60 |
1197 | |
fc04eb16 |
1198 | ithread *thread; |
1199 | MY_CXT_INIT; |
1200 | |
1201 | PL_perl_destruct_level = 2; |
1202 | MUTEX_INIT(&create_destruct_mutex); |
1203 | MUTEX_LOCK(&create_destruct_mutex); |
1204 | |
1205 | PL_threadhook = &Perl_ithread_hook; |
1206 | |
1207 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
1208 | if (! thread) { |
1209 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
1210 | my_exit(1); |
1211 | } |
1212 | Zero(thread, 1, ithread); |
1213 | |
fc04eb16 |
1214 | MUTEX_INIT(&thread->mutex); |
1215 | |
1216 | thread->tid = tid_counter++; /* Thread 0 */ |
1217 | |
1218 | /* Head of the threads list */ |
1219 | threads = thread; |
1220 | thread->next = thread; |
1221 | thread->prev = thread; |
1222 | |
1223 | thread->count = 1; /* Immortal */ |
1224 | |
1225 | thread->interp = aTHX; |
1226 | thread->state = PERL_ITHR_DETACHED; /* Detached */ |
514612b7 |
1227 | thread->stack_size = default_stack_size; |
fc04eb16 |
1228 | # ifdef WIN32 |
1229 | thread->thr = GetCurrentThreadId(); |
1230 | # else |
1231 | thread->thr = pthread_self(); |
1232 | # endif |
1233 | |
fc04eb16 |
1234 | S_ithread_set(aTHX_ thread); |
1235 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
1236 | #endif /* USE_ITHREADS */ |
68795e93 |
1237 | } |