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 |
c608f8c0 |
8 | # if !defined(__BORLANDC__) |
9 | # define setjmp(x) _setjmp(x) |
10 | # endif |
4dcb9e53 |
11 | #endif |
0f1612a7 |
12 | #ifdef HAS_PPPORT_H |
404aaa48 |
13 | # define NEED_PL_signals |
0f1612a7 |
14 | # define NEED_newRV_noinc |
15 | # define NEED_sv_2pv_nolen |
16 | # include "ppport.h" |
17 | # include "threads.h" |
18 | #endif |
68795e93 |
19 | |
73e09c8f |
20 | #ifdef USE_ITHREADS |
21 | |
68795e93 |
22 | #ifdef WIN32 |
fc04eb16 |
23 | # include <windows.h> |
514612b7 |
24 | /* Supposed to be in Winbase.h */ |
25 | # ifndef STACK_SIZE_PARAM_IS_A_RESERVATION |
26 | # define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000 |
27 | # endif |
fc04eb16 |
28 | # include <win32thread.h> |
68795e93 |
29 | #else |
fc04eb16 |
30 | # ifdef OS2 |
5c728af0 |
31 | typedef perl_os_thread pthread_t; |
fc04eb16 |
32 | # else |
33 | # include <pthread.h> |
34 | # endif |
35 | # include <thread.h> |
36 | # define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
37 | # ifdef OLD_PTHREADS_API |
38 | # define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
39 | # else |
40 | # define PERL_THREAD_DETACH(t) pthread_detach((t)) |
41 | # endif |
467f3f08 |
42 | #endif |
d305c2c9 |
43 | #if !defined(HAS_GETPAGESIZE) && defined(I_SYS_PARAM) |
44 | # include <sys/param.h> |
45 | #endif |
68795e93 |
46 | |
62375a60 |
47 | /* Values for 'state' member */ |
fc04eb16 |
48 | #define PERL_ITHR_JOINABLE 0 |
49 | #define PERL_ITHR_DETACHED 1 |
50 | #define PERL_ITHR_JOINED 2 |
51 | #define PERL_ITHR_FINISHED 4 |
52 | |
53 | typedef struct _ithread { |
54 | struct _ithread *next; /* Next thread in the list */ |
55 | struct _ithread *prev; /* Prev thread in the list */ |
56 | PerlInterpreter *interp; /* The threads interpreter */ |
57 | UV tid; /* Threads module's thread id */ |
58 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
9feacc09 |
59 | int count; /* How many SVs have a reference to us */ |
fc04eb16 |
60 | int state; /* Detached, joined, finished, etc. */ |
61 | int gimme; /* Context of create */ |
62 | SV *init_function; /* Code to run */ |
63 | SV *params; /* Args to pass function */ |
68795e93 |
64 | #ifdef WIN32 |
fc04eb16 |
65 | DWORD thr; /* OS's idea if thread id */ |
66 | HANDLE handle; /* OS's waitable handle */ |
68795e93 |
67 | #else |
fc04eb16 |
68 | pthread_t thr; /* OS's handle for the thread */ |
68795e93 |
69 | #endif |
514612b7 |
70 | IV stack_size; |
68795e93 |
71 | } ithread; |
72 | |
fc04eb16 |
73 | |
74 | /* Used by Perl interpreter for thread context switching */ |
628ab322 |
75 | #define MY_CXT_KEY "threads::_guts" XS_VERSION |
76 | |
77 | typedef struct { |
78 | ithread *thread; |
79 | } my_cxt_t; |
80 | |
81 | START_MY_CXT |
82 | |
83 | |
fc04eb16 |
84 | /* Linked list of all threads */ |
f4cc38af |
85 | static ithread *threads; |
68795e93 |
86 | |
fc04eb16 |
87 | /* Protects the creation and destruction of threads*/ |
88 | static perl_mutex create_destruct_mutex; |
68795e93 |
89 | |
f4cc38af |
90 | static UV tid_counter = 0; |
5168baf3 |
91 | static IV joinable_threads = 0; |
4dcb9e53 |
92 | static IV running_threads = 0; |
93 | static IV detached_threads = 0; |
514612b7 |
94 | #ifdef THREAD_CREATE_NEEDS_STACK |
95 | static IV default_stack_size = THREAD_CREATE_NEEDS_STACK; |
96 | #else |
97 | static IV default_stack_size = 0; |
98 | #endif |
99 | static IV page_size = 0; |
c05ae023 |
100 | |
101 | |
fc04eb16 |
102 | /* Used by Perl interpreter for thread context switching */ |
f4cc38af |
103 | static void |
fc04eb16 |
104 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
105 | { |
628ab322 |
106 | dMY_CXT; |
107 | MY_CXT.thread = thread; |
c05ae023 |
108 | } |
109 | |
fc04eb16 |
110 | static ithread * |
111 | S_ithread_get(pTHX) |
112 | { |
628ab322 |
113 | dMY_CXT; |
fc04eb16 |
114 | return (MY_CXT.thread); |
c05ae023 |
115 | } |
116 | |
117 | |
fc04eb16 |
118 | /* Free any data (such as the Perl interpreter) attached to an ithread |
119 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
120 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
121 | */ |
2e676467 |
122 | static void |
fc04eb16 |
123 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
124 | { |
125 | PerlInterpreter *interp; |
fc04eb16 |
126 | |
ead32952 |
127 | assert((thread->state & PERL_ITHR_FINISHED) && |
128 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
2e676467 |
129 | |
130 | interp = thread->interp; |
131 | if (interp) { |
fc04eb16 |
132 | dTHXa(interp); |
133 | |
134 | PERL_SET_CONTEXT(interp); |
135 | S_ithread_set(aTHX_ thread); |
f2cba68d |
136 | |
fc04eb16 |
137 | SvREFCNT_dec(thread->params); |
138 | thread->params = Nullsv; |
2e676467 |
139 | |
fc04eb16 |
140 | perl_destruct(interp); |
141 | thread->interp = NULL; |
2e676467 |
142 | } |
143 | if (interp) |
fc04eb16 |
144 | perl_free(interp); |
145 | |
2e676467 |
146 | PERL_SET_CONTEXT(aTHX); |
147 | } |
148 | |
68795e93 |
149 | |
fc04eb16 |
150 | /* Free an ithread structure and any attached data if its count == 0 */ |
bcd9ca9b |
151 | static void |
fc04eb16 |
152 | S_ithread_destruct(pTHX_ ithread *thread) |
68795e93 |
153 | { |
385d56e4 |
154 | #ifdef WIN32 |
fc04eb16 |
155 | HANDLE handle; |
385d56e4 |
156 | #endif |
157 | |
fc04eb16 |
158 | MUTEX_LOCK(&thread->mutex); |
bcd9ca9b |
159 | |
fc04eb16 |
160 | /* Thread is still in use */ |
161 | if (thread->count != 0) { |
162 | MUTEX_UNLOCK(&thread->mutex); |
163 | return; |
164 | } |
9feacc09 |
165 | |
fc04eb16 |
166 | /* Main thread (0) is immortal and should never get here */ |
167 | assert(thread->tid != 0); |
168 | |
169 | /* Remove from circular list of threads */ |
4dcb9e53 |
170 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
171 | thread->next->prev = thread->prev; |
172 | thread->prev->next = thread->next; |
173 | thread->next = NULL; |
174 | thread->prev = NULL; |
175 | MUTEX_UNLOCK(&create_destruct_mutex); |
c2f2a82b |
176 | |
fc04eb16 |
177 | /* Thread is now disowned */ |
178 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
179 | |
180 | #ifdef WIN32 |
fc04eb16 |
181 | handle = thread->handle; |
182 | thread->handle = NULL; |
385d56e4 |
183 | #endif |
fc04eb16 |
184 | MUTEX_UNLOCK(&thread->mutex); |
185 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
186 | |
c7667023 |
187 | #ifdef WIN32 |
fc04eb16 |
188 | if (handle) |
189 | CloseHandle(handle); |
c7667023 |
190 | #endif |
385d56e4 |
191 | |
fc04eb16 |
192 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
193 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
194 | */ |
195 | aTHX = PL_curinterp; |
196 | PerlMemShared_free(thread); |
68795e93 |
197 | } |
198 | |
fc04eb16 |
199 | |
200 | /* Called on exit */ |
62375a60 |
201 | int |
202 | Perl_ithread_hook(pTHX) |
203 | { |
204 | int veto_cleanup = 0; |
205 | MUTEX_LOCK(&create_destruct_mutex); |
4dcb9e53 |
206 | if ((aTHX == PL_curinterp) && |
207 | (running_threads || joinable_threads)) |
208 | { |
fc04eb16 |
209 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
210 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
211 | IVdf " running and unjoined\n\t%" |
212 | IVdf " finished and unjoined\n\t%" |
213 | IVdf " running and detached\n", |
214 | running_threads, |
215 | joinable_threads, |
216 | detached_threads); |
fc04eb16 |
217 | } |
218 | veto_cleanup = 1; |
62375a60 |
219 | } |
220 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
221 | return (veto_cleanup); |
62375a60 |
222 | } |
223 | |
68795e93 |
224 | |
225 | /* MAGIC (in mg.h sense) hooks */ |
226 | |
227 | int |
228 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
229 | { |
fc04eb16 |
230 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
231 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
232 | SvIOK_on(sv); |
fc04eb16 |
233 | return (0); |
68795e93 |
234 | } |
235 | |
236 | int |
237 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
238 | { |
f2cba68d |
239 | ithread *thread = (ithread *)mg->mg_ptr; |
240 | int cleanup; |
241 | |
68795e93 |
242 | MUTEX_LOCK(&thread->mutex); |
f2cba68d |
243 | cleanup = ((--thread->count == 0) && |
244 | (thread->state & PERL_ITHR_FINISHED) && |
245 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))); |
246 | MUTEX_UNLOCK(&thread->mutex); |
247 | |
248 | if (cleanup) |
249 | S_ithread_destruct(aTHX_ thread); |
fc04eb16 |
250 | return (0); |
68795e93 |
251 | } |
252 | |
253 | int |
254 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
255 | { |
fc04eb16 |
256 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
257 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
258 | thread->count++; |
259 | MUTEX_UNLOCK(&thread->mutex); |
fc04eb16 |
260 | return (0); |
68795e93 |
261 | } |
262 | |
263 | MGVTBL ithread_vtbl = { |
fc04eb16 |
264 | ithread_mg_get, /* get */ |
265 | 0, /* set */ |
266 | 0, /* len */ |
267 | 0, /* clear */ |
268 | ithread_mg_free, /* free */ |
269 | 0, /* copy */ |
270 | ithread_mg_dup /* dup */ |
68795e93 |
271 | }; |
272 | |
47ba8780 |
273 | |
514612b7 |
274 | /* Provided default, minimum and rational stack sizes */ |
275 | static IV |
276 | good_stack_size(pTHX_ IV stack_size) |
277 | { |
278 | /* Use default stack size if no stack size specified */ |
279 | if (! stack_size) |
280 | return (default_stack_size); |
281 | |
282 | #ifdef PTHREAD_STACK_MIN |
283 | /* Can't use less than minimum */ |
284 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
285 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
286 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
287 | } |
288 | return (PTHREAD_STACK_MIN); |
289 | } |
290 | #endif |
291 | |
292 | /* Round up to page size boundary */ |
293 | if (page_size <= 0) { |
d305c2c9 |
294 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
295 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
296 | # ifdef _SC_PAGESIZE |
514612b7 |
297 | page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
298 | # else |
514612b7 |
299 | page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
300 | # endif |
514612b7 |
301 | if ((long)page_size < 0) { |
302 | if (errno) { |
303 | SV * const error = get_sv("@", FALSE); |
304 | (void)SvUPGRADE(error, SVt_PV); |
305 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
306 | } else { |
307 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
308 | } |
309 | } |
d305c2c9 |
310 | #else |
311 | # ifdef HAS_GETPAGESIZE |
514612b7 |
312 | page_size = getpagesize(); |
514612b7 |
313 | # else |
d305c2c9 |
314 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
315 | page_size = PAGESIZE; |
316 | # else |
514612b7 |
317 | page_size = 8192; /* A conservative default */ |
d305c2c9 |
318 | # endif |
514612b7 |
319 | # endif |
d305c2c9 |
320 | if (page_size <= 0) |
321 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)page_size); |
514612b7 |
322 | #endif |
323 | } |
324 | stack_size = ((stack_size + (page_size - 1)) / page_size) * page_size; |
325 | |
326 | return (stack_size); |
327 | } |
328 | |
329 | |
fc04eb16 |
330 | /* Starts executing the thread. |
331 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
332 | */ |
47ba8780 |
333 | #ifdef WIN32 |
f4cc38af |
334 | static THREAD_RET_TYPE |
fc04eb16 |
335 | S_ithread_run(LPVOID arg) |
47ba8780 |
336 | #else |
fc04eb16 |
337 | static void * |
338 | S_ithread_run(void * arg) |
47ba8780 |
339 | #endif |
fc04eb16 |
340 | { |
341 | ithread *thread = (ithread *)arg; |
342 | int cleanup; |
f2cba68d |
343 | |
fc04eb16 |
344 | dTHXa(thread->interp); |
345 | PERL_SET_CONTEXT(thread->interp); |
346 | S_ithread_set(aTHX_ thread); |
47ba8780 |
347 | |
68795e93 |
348 | #if 0 |
fc04eb16 |
349 | /* Far from clear messing with ->thr child-side is a good idea */ |
350 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
351 | #ifdef WIN32 |
fc04eb16 |
352 | thread->thr = GetCurrentThreadId(); |
47ba8780 |
353 | #else |
fc04eb16 |
354 | thread->thr = pthread_self(); |
47ba8780 |
355 | #endif |
fc04eb16 |
356 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
357 | #endif |
47ba8780 |
358 | |
fc04eb16 |
359 | PL_perl_destruct_level = 2; |
f2cba68d |
360 | |
fc04eb16 |
361 | { |
362 | AV *params = (AV *)SvRV(thread->params); |
363 | int len = (int)av_len(params)+1; |
364 | int ii; |
4dcb9e53 |
365 | int jmp_rc = 0; |
366 | I32 oldscope; |
367 | |
368 | dJMPENV; |
fc04eb16 |
369 | |
370 | dSP; |
371 | ENTER; |
372 | SAVETMPS; |
373 | |
374 | /* Put args on the stack */ |
375 | PUSHMARK(SP); |
376 | for (ii=0; ii < len; ii++) { |
377 | XPUSHs(av_shift(params)); |
378 | } |
379 | PUTBACK; |
380 | |
4dcb9e53 |
381 | oldscope = PL_scopestack_ix; |
382 | JMPENV_PUSH(jmp_rc); |
383 | if (jmp_rc == 0) { |
384 | /* Run the specified function */ |
385 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
386 | } else if (jmp_rc == 2) { |
387 | while (PL_scopestack_ix > oldscope) { |
388 | LEAVE; |
389 | } |
390 | } |
391 | JMPENV_POP; |
fc04eb16 |
392 | |
393 | /* Remove args from stack and put back in params array */ |
394 | SPAGAIN; |
395 | for (ii=len-1; ii >= 0; ii--) { |
396 | SV *sv = POPs; |
4dcb9e53 |
397 | if (jmp_rc == 0) { |
398 | av_store(params, ii, SvREFCNT_inc(sv)); |
399 | } |
fc04eb16 |
400 | } |
401 | |
4dcb9e53 |
402 | FREETMPS; |
403 | LEAVE; |
404 | |
fc04eb16 |
405 | /* Check for failure */ |
406 | if (SvTRUE(ERRSV) && ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
407 | oldscope = PL_scopestack_ix; |
408 | JMPENV_PUSH(jmp_rc); |
409 | if (jmp_rc == 0) { |
410 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
411 | } else if (jmp_rc == 2) { |
412 | while (PL_scopestack_ix > oldscope) { |
413 | LEAVE; |
414 | } |
415 | } |
416 | JMPENV_POP; |
fc04eb16 |
417 | } |
418 | |
fc04eb16 |
419 | /* Release function ref */ |
420 | SvREFCNT_dec(thread->init_function); |
421 | thread->init_function = Nullsv; |
422 | } |
62375a60 |
423 | |
fc04eb16 |
424 | PerlIO_flush((PerlIO *)NULL); |
425 | |
426 | MUTEX_LOCK(&thread->mutex); |
427 | /* Mark as finished */ |
428 | thread->state |= PERL_ITHR_FINISHED; |
429 | /* Cleanup if detached */ |
430 | cleanup = (thread->state & PERL_ITHR_DETACHED); |
431 | MUTEX_UNLOCK(&thread->mutex); |
432 | |
4dcb9e53 |
433 | if (cleanup) { |
434 | MUTEX_LOCK(&create_destruct_mutex); |
435 | detached_threads--; |
436 | MUTEX_UNLOCK(&create_destruct_mutex); |
fc04eb16 |
437 | S_ithread_destruct(aTHX_ thread); |
4dcb9e53 |
438 | } else { |
439 | MUTEX_LOCK(&create_destruct_mutex); |
440 | running_threads--; |
441 | joinable_threads++; |
442 | MUTEX_UNLOCK(&create_destruct_mutex); |
5168baf3 |
443 | } |
91604d21 |
444 | |
47ba8780 |
445 | #ifdef WIN32 |
fc04eb16 |
446 | return ((DWORD)0); |
e8f2bb9a |
447 | #else |
fc04eb16 |
448 | return (0); |
47ba8780 |
449 | #endif |
68795e93 |
450 | } |
451 | |
fc04eb16 |
452 | |
453 | /* Type conversion helper functions */ |
f4cc38af |
454 | static SV * |
68795e93 |
455 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
456 | { |
457 | SV *sv; |
458 | MAGIC *mg; |
fc04eb16 |
459 | |
68795e93 |
460 | if (inc) { |
fc04eb16 |
461 | MUTEX_LOCK(&thread->mutex); |
462 | thread->count++; |
463 | MUTEX_UNLOCK(&thread->mutex); |
464 | } |
465 | |
466 | if (! obj) { |
467 | obj = newSV(0); |
68795e93 |
468 | } |
fc04eb16 |
469 | |
470 | sv = newSVrv(obj, classname); |
471 | sv_setiv(sv, PTR2IV(thread)); |
472 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
473 | mg->mg_flags |= MGf_DUP; |
474 | SvREADONLY_on(sv); |
fc04eb16 |
475 | |
476 | return (obj); |
68795e93 |
477 | } |
47ba8780 |
478 | |
f4cc38af |
479 | static ithread * |
68795e93 |
480 | SV_to_ithread(pTHX_ SV *sv) |
481 | { |
fc04eb16 |
482 | /* Argument is a thread */ |
483 | if (SvROK(sv)) { |
484 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
485 | } |
486 | /* Argument is classname, therefore return current thread */ |
487 | return (S_ithread_get(aTHX)); |
47ba8780 |
488 | } |
489 | |
47ba8780 |
490 | |
fc04eb16 |
491 | /* threads->create() |
492 | * Called in context of parent thread. |
493 | */ |
f4cc38af |
494 | static SV * |
fc04eb16 |
495 | S_ithread_create( |
496 | pTHX_ SV *obj, |
497 | char *classname, |
498 | SV *init_function, |
514612b7 |
499 | IV stack_size, |
9d9ff5b1 |
500 | int gimme, |
fc04eb16 |
501 | SV *params) |
68795e93 |
502 | { |
fc04eb16 |
503 | ithread *thread; |
504 | CLONE_PARAMS clone_param; |
505 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
506 | |
fc04eb16 |
507 | SV **tmps_tmp = PL_tmps_stack; |
508 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
509 | #ifndef WIN32 |
fc04eb16 |
510 | int rc_stack_size = 0; |
511 | int rc_thread_create = 0; |
d94006e8 |
512 | #endif |
3b1c3273 |
513 | |
fc04eb16 |
514 | MUTEX_LOCK(&create_destruct_mutex); |
515 | |
516 | /* Allocate thread structure */ |
517 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
518 | if (!thread) { |
519 | MUTEX_UNLOCK(&create_destruct_mutex); |
520 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
521 | my_exit(1); |
522 | } |
523 | Zero(thread, 1, ithread); |
524 | |
525 | /* Add to threads list */ |
526 | thread->next = threads; |
527 | thread->prev = threads->prev; |
528 | threads->prev = thread; |
529 | thread->prev->next = thread; |
c05ae023 |
530 | |
fc04eb16 |
531 | /* Set count to 1 immediately in case thread exits before |
532 | * we return to caller! |
533 | */ |
534 | thread->count = 1; |
535 | |
536 | MUTEX_INIT(&thread->mutex); |
537 | thread->tid = tid_counter++; |
514612b7 |
538 | thread->stack_size = good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
539 | thread->gimme = gimme; |
fc04eb16 |
540 | |
541 | /* "Clone" our interpreter into the thread's interpreter. |
542 | * This gives thread access to "static data" and code. |
543 | */ |
544 | PerlIO_flush((PerlIO *)NULL); |
545 | S_ithread_set(aTHX_ thread); |
546 | |
547 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
548 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
549 | set during the clone */ |
3b1c3273 |
550 | |
47ba8780 |
551 | #ifdef WIN32 |
fc04eb16 |
552 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
553 | #else |
fc04eb16 |
554 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
555 | #endif |
47ba8780 |
556 | |
fc04eb16 |
557 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
558 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
559 | * context for the duration of our work for new interpreter. |
560 | */ |
561 | { |
562 | dTHXa(thread->interp); |
563 | |
564 | MY_CXT_CLONE; |
565 | |
566 | /* Here we remove END blocks since they should only run in the thread |
567 | * they are created |
568 | */ |
569 | SvREFCNT_dec(PL_endav); |
570 | PL_endav = newAV(); |
404aaa48 |
571 | |
f2e0bb91 |
572 | if (SvPOK(init_function)) { |
573 | thread->init_function = newSV(0); |
574 | sv_copypv(thread->init_function, init_function); |
575 | } else { |
576 | clone_param.flags = 0; |
577 | thread->init_function = sv_dup(init_function, &clone_param); |
578 | if (SvREFCNT(thread->init_function) == 0) { |
579 | SvREFCNT_inc(thread->init_function); |
580 | } |
fc04eb16 |
581 | } |
582 | |
583 | thread->params = sv_dup(params, &clone_param); |
584 | SvREFCNT_inc(thread->params); |
585 | |
586 | /* The code below checks that anything living on the tmps stack and |
587 | * has been cloned (so it lives in the ptr_table) has a refcount |
588 | * higher than 0. |
589 | * |
590 | * If the refcount is 0 it means that a something on the stack/context |
591 | * was holding a reference to it and since we init_stacks() in |
592 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
593 | * The reason it was cloned was that it lived on the @_ stack. |
594 | * |
595 | * Example of this can be found in bugreport 15837 where calls in the |
596 | * parameter list end up as a temp. |
597 | * |
598 | * One could argue that this fix should be in perl_clone. |
599 | */ |
600 | while (tmps_ix > 0) { |
601 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
602 | tmps_ix--; |
603 | if (sv && SvREFCNT(sv) == 0) { |
604 | SvREFCNT_inc(sv); |
605 | SvREFCNT_dec(sv); |
606 | } |
607 | } |
608 | |
609 | SvTEMP_off(thread->init_function); |
610 | ptr_table_free(PL_ptr_table); |
611 | PL_ptr_table = NULL; |
612 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
613 | } |
614 | S_ithread_set(aTHX_ current_thread); |
615 | PERL_SET_CONTEXT(aTHX); |
616 | |
617 | /* Create/start the thread */ |
47ba8780 |
618 | #ifdef WIN32 |
fc04eb16 |
619 | thread->handle = CreateThread(NULL, |
514612b7 |
620 | (DWORD)thread->stack_size, |
fc04eb16 |
621 | S_ithread_run, |
622 | (LPVOID)thread, |
514612b7 |
623 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
624 | &thread->thr); |
82c40bf6 |
625 | #else |
fc04eb16 |
626 | { |
627 | static pthread_attr_t attr; |
628 | static int attr_inited = 0; |
629 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
630 | if (! attr_inited) { |
631 | pthread_attr_init(&attr); |
632 | attr_inited = 1; |
633 | } |
634 | |
fa26028c |
635 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
636 | /* Threads start out joinable */ |
637 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
638 | # endif |
fc04eb16 |
639 | |
514612b7 |
640 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
641 | /* Set thread's stack size */ |
514612b7 |
642 | if (thread->stack_size > 0) { |
643 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
644 | } |
3eb37d38 |
645 | # endif |
646 | |
fc04eb16 |
647 | /* Create the thread */ |
648 | if (! rc_stack_size) { |
649 | # ifdef OLD_PTHREADS_API |
650 | rc_thread_create = pthread_create(&thread->thr, |
651 | attr, |
652 | S_ithread_run, |
653 | (void *)thread); |
654 | # else |
655 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
656 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
657 | # endif |
658 | rc_thread_create = pthread_create(&thread->thr, |
659 | &attr, |
660 | S_ithread_run, |
661 | (void *)thread); |
19a077f6 |
662 | # endif |
fc04eb16 |
663 | } |
514612b7 |
664 | |
665 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
666 | /* Try to get thread's actual stack size */ |
667 | { |
668 | size_t stacksize; |
58a3a76c |
669 | #ifdef HPUX1020 |
670 | stacksize = pthread_attr_getstacksize(attr); |
671 | #else |
672 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
673 | #endif |
674 | if (stacksize > 0) { |
514612b7 |
675 | thread->stack_size = (IV)stacksize; |
676 | } |
514612b7 |
677 | } |
678 | # endif |
fc04eb16 |
679 | } |
82c40bf6 |
680 | #endif |
bcd9ca9b |
681 | |
fc04eb16 |
682 | /* Check for errors */ |
d94006e8 |
683 | #ifdef WIN32 |
fc04eb16 |
684 | if (thread->handle == NULL) { |
d94006e8 |
685 | #else |
fc04eb16 |
686 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
687 | #endif |
fc04eb16 |
688 | MUTEX_UNLOCK(&create_destruct_mutex); |
689 | sv_2mortal(params); |
690 | S_ithread_destruct(aTHX_ thread); |
d94006e8 |
691 | #ifndef WIN32 |
514612b7 |
692 | if (ckWARN_d(WARN_THREADS)) { |
693 | if (rc_stack_size) |
694 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
695 | else |
696 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
697 | } |
d94006e8 |
698 | #endif |
fc04eb16 |
699 | return (&PL_sv_undef); |
700 | } |
701 | |
4dcb9e53 |
702 | running_threads++; |
fc04eb16 |
703 | MUTEX_UNLOCK(&create_destruct_mutex); |
704 | |
705 | sv_2mortal(params); |
3b1c3273 |
706 | |
fc04eb16 |
707 | return (ithread_to_SV(aTHX_ obj, thread, classname, FALSE)); |
68795e93 |
708 | } |
47ba8780 |
709 | |
73e09c8f |
710 | #endif /* USE_ITHREADS */ |
e1c44605 |
711 | |
fcea4b7c |
712 | |
fc04eb16 |
713 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
714 | PROTOTYPES: DISABLE |
8222d950 |
715 | |
73e09c8f |
716 | #ifdef USE_ITHREADS |
717 | |
68795e93 |
718 | void |
f4cc38af |
719 | ithread_create(...) |
720 | PREINIT: |
721 | char *classname; |
514612b7 |
722 | ithread *thread; |
f4cc38af |
723 | SV *function_to_call; |
724 | AV *params; |
514612b7 |
725 | HV *specs; |
726 | IV stack_size; |
9d9ff5b1 |
727 | int context; |
728 | char *str; |
514612b7 |
729 | int idx; |
f4cc38af |
730 | int ii; |
731 | CODE: |
514612b7 |
732 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
733 | if (--items < 2) |
734 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
735 | specs = (HV*)SvRV(ST(1)); |
736 | idx = 1; |
737 | } else { |
738 | if (items < 2) |
739 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
740 | specs = NULL; |
741 | idx = 0; |
742 | } |
f4cc38af |
743 | |
514612b7 |
744 | if (sv_isobject(ST(0))) { |
745 | /* $thr->create() */ |
746 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
747 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
748 | stack_size = thread->stack_size; |
749 | } else { |
750 | /* threads->create() */ |
751 | classname = (char *)SvPV_nolen(ST(0)); |
752 | stack_size = default_stack_size; |
753 | } |
754 | |
755 | function_to_call = ST(idx+1); |
756 | |
9d9ff5b1 |
757 | context = -1; |
514612b7 |
758 | if (specs) { |
759 | /* stack_size */ |
760 | if (hv_exists(specs, "stack", 5)) { |
761 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
762 | } else if (hv_exists(specs, "stacksize", 9)) { |
763 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
764 | } else if (hv_exists(specs, "stack_size", 10)) { |
765 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
766 | } |
9d9ff5b1 |
767 | |
768 | /* context */ |
769 | if (hv_exists(specs, "context", 7)) { |
770 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
771 | switch (*str) { |
772 | case 'a': |
773 | case 'A': |
774 | context = G_ARRAY; |
775 | break; |
776 | case 's': |
777 | case 'S': |
778 | context = G_SCALAR; |
779 | break; |
780 | case 'v': |
781 | case 'V': |
782 | context = G_VOID; |
783 | break; |
784 | default: |
785 | Perl_croak(aTHX_ "Invalid context: %s", str); |
786 | } |
787 | } else if (hv_exists(specs, "array", 5)) { |
788 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
789 | context = G_ARRAY; |
790 | } |
791 | } else if (hv_exists(specs, "scalar", 6)) { |
792 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
793 | context = G_SCALAR; |
794 | } |
795 | } else if (hv_exists(specs, "void", 4)) { |
796 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
797 | context = G_VOID; |
798 | } |
799 | } |
800 | } |
801 | if (context == -1) { |
802 | context = GIMME_V; /* Implicit context */ |
803 | } else { |
804 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
805 | } |
f4cc38af |
806 | |
807 | /* Function args */ |
808 | params = newAV(); |
809 | if (items > 2) { |
514612b7 |
810 | for (ii=2; ii < items ; ii++) { |
811 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
812 | } |
813 | } |
814 | |
815 | /* Create thread */ |
bcd9ca9b |
816 | ST(0) = sv_2mortal(S_ithread_create(aTHX_ Nullsv, |
514612b7 |
817 | classname, |
818 | function_to_call, |
819 | stack_size, |
9d9ff5b1 |
820 | context, |
514612b7 |
821 | newRV_noinc((SV*)params))); |
f4cc38af |
822 | /* XSRETURN(1); - implied */ |
823 | |
8222d950 |
824 | |
68795e93 |
825 | void |
f4cc38af |
826 | ithread_list(...) |
827 | PREINIT: |
828 | char *classname; |
fc04eb16 |
829 | ithread *thread; |
f4cc38af |
830 | int list_context; |
831 | IV count = 0; |
ead32952 |
832 | int want_running; |
f4cc38af |
833 | PPCODE: |
834 | /* Class method only */ |
835 | if (SvROK(ST(0))) |
ead32952 |
836 | Perl_croak(aTHX_ "Usage: threads->list(...)"); |
f4cc38af |
837 | classname = (char *)SvPV_nolen(ST(0)); |
838 | |
839 | /* Calling context */ |
840 | list_context = (GIMME_V == G_ARRAY); |
841 | |
ead32952 |
842 | /* Running or joinable parameter */ |
843 | if (items > 1) { |
844 | want_running = SvTRUE(ST(1)); |
845 | } |
846 | |
f4cc38af |
847 | /* Walk through threads list */ |
848 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
849 | for (thread = threads->next; |
850 | thread != threads; |
851 | thread = thread->next) |
f4cc38af |
852 | { |
853 | /* Ignore detached or joined threads */ |
fc04eb16 |
854 | if (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)) { |
f4cc38af |
855 | continue; |
856 | } |
ead32952 |
857 | |
858 | /* Filter per parameter */ |
859 | if (items > 1) { |
860 | if (want_running) { |
861 | if (thread->state & PERL_ITHR_FINISHED) { |
862 | continue; /* Not running */ |
863 | } |
864 | } else { |
865 | if (! (thread->state & PERL_ITHR_FINISHED)) { |
866 | continue; /* Still running - not joinable yet */ |
867 | } |
868 | } |
869 | } |
870 | |
f4cc38af |
871 | /* Push object on stack if list context */ |
872 | if (list_context) { |
fc04eb16 |
873 | XPUSHs(sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
874 | } |
875 | count++; |
876 | } |
877 | MUTEX_UNLOCK(&create_destruct_mutex); |
878 | /* If scalar context, send back count */ |
879 | if (! list_context) { |
880 | XSRETURN_IV(count); |
881 | } |
678a9b6c |
882 | |
883 | |
884 | void |
f4cc38af |
885 | ithread_self(...) |
886 | PREINIT: |
887 | char *classname; |
fcea4b7c |
888 | ithread *thread; |
f4cc38af |
889 | CODE: |
890 | /* Class method only */ |
891 | if (SvROK(ST(0))) |
892 | Perl_croak(aTHX_ "Usage: threads->self()"); |
893 | classname = (char *)SvPV_nolen(ST(0)); |
894 | |
fcea4b7c |
895 | thread = S_ithread_get(aTHX); |
896 | |
897 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
898 | /* XSRETURN(1); - implied */ |
47ba8780 |
899 | |
47ba8780 |
900 | |
901 | void |
f4cc38af |
902 | ithread_tid(...) |
903 | PREINIT: |
904 | ithread *thread; |
905 | CODE: |
906 | thread = SV_to_ithread(aTHX_ ST(0)); |
907 | XST_mUV(0, thread->tid); |
908 | /* XSRETURN(1); - implied */ |
909 | |
e1c44605 |
910 | |
f9dff5f5 |
911 | void |
f4cc38af |
912 | ithread_join(...) |
913 | PREINIT: |
fcea4b7c |
914 | ithread *thread; |
915 | int join_err; |
f4cc38af |
916 | AV *params; |
917 | int len; |
918 | int ii; |
fcea4b7c |
919 | #ifdef WIN32 |
920 | DWORD waitcode; |
921 | #else |
922 | void *retval; |
923 | #endif |
f4cc38af |
924 | PPCODE: |
925 | /* Object method only */ |
926 | if (! sv_isobject(ST(0))) |
927 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
928 | |
fcea4b7c |
929 | /* Check if the thread is joinable */ |
930 | thread = SV_to_ithread(aTHX_ ST(0)); |
931 | MUTEX_LOCK(&thread->mutex); |
932 | join_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)); |
933 | MUTEX_UNLOCK(&thread->mutex); |
934 | if (join_err) { |
935 | if (join_err & PERL_ITHR_DETACHED) { |
936 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
937 | } else { |
938 | Perl_croak(aTHX_ "Thread already joined"); |
939 | } |
940 | } |
941 | |
942 | /* Join the thread */ |
943 | #ifdef WIN32 |
944 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
945 | #else |
946 | pthread_join(thread->thr, &retval); |
947 | #endif |
948 | |
949 | MUTEX_LOCK(&thread->mutex); |
950 | /* Mark as joined */ |
951 | thread->state |= PERL_ITHR_JOINED; |
952 | |
953 | /* Get the return value from the call_sv */ |
954 | { |
955 | AV *params_copy; |
956 | PerlInterpreter *other_perl; |
957 | CLONE_PARAMS clone_params; |
958 | ithread *current_thread; |
959 | |
960 | params_copy = (AV *)SvRV(thread->params); |
961 | other_perl = thread->interp; |
962 | clone_params.stashes = newAV(); |
963 | clone_params.flags = CLONEf_JOIN_IN; |
964 | PL_ptr_table = ptr_table_new(); |
965 | current_thread = S_ithread_get(aTHX); |
966 | S_ithread_set(aTHX_ thread); |
967 | /* Ensure 'meaningful' addresses retain their meaning */ |
968 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
969 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
970 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
971 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
972 | S_ithread_set(aTHX_ current_thread); |
973 | SvREFCNT_dec(clone_params.stashes); |
974 | SvREFCNT_inc(params); |
975 | ptr_table_free(PL_ptr_table); |
976 | PL_ptr_table = NULL; |
977 | } |
978 | |
979 | /* We are finished with the thread */ |
980 | S_ithread_clear(aTHX_ thread); |
981 | MUTEX_UNLOCK(&thread->mutex); |
982 | |
4dcb9e53 |
983 | MUTEX_LOCK(&create_destruct_mutex); |
984 | joinable_threads--; |
985 | MUTEX_UNLOCK(&create_destruct_mutex); |
986 | |
fcea4b7c |
987 | /* If no return values, then just return */ |
f4cc38af |
988 | if (! params) { |
989 | XSRETURN_UNDEF; |
990 | } |
991 | |
992 | /* Put return values on stack */ |
993 | len = (int)AvFILL(params); |
994 | for (ii=0; ii <= len; ii++) { |
995 | SV* param = av_shift(params); |
996 | XPUSHs(sv_2mortal(param)); |
997 | } |
998 | |
999 | /* Free return value array */ |
1000 | SvREFCNT_dec(params); |
1001 | |
1002 | |
1003 | void |
1004 | ithread_yield(...) |
1005 | CODE: |
1006 | YIELD; |
1007 | |
1008 | |
1009 | void |
1010 | ithread_detach(...) |
1011 | PREINIT: |
1012 | ithread *thread; |
fcea4b7c |
1013 | int detach_err; |
1014 | int cleanup; |
f4cc38af |
1015 | CODE: |
1016 | thread = SV_to_ithread(aTHX_ ST(0)); |
fcea4b7c |
1017 | MUTEX_LOCK(&thread->mutex); |
1018 | |
1019 | /* Check if the thread is detachable */ |
1020 | if ((detach_err = (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED)))) { |
1021 | MUTEX_UNLOCK(&thread->mutex); |
1022 | if (detach_err & PERL_ITHR_DETACHED) { |
1023 | Perl_croak(aTHX_ "Thread already detached"); |
1024 | } else { |
1025 | Perl_croak(aTHX_ "Cannot detach a joined thread"); |
1026 | } |
1027 | } |
1028 | |
1029 | /* Detach the thread */ |
1030 | thread->state |= PERL_ITHR_DETACHED; |
1031 | #ifdef WIN32 |
1032 | /* Windows has no 'detach thread' function */ |
1033 | #else |
1034 | PERL_THREAD_DETACH(thread->thr); |
1035 | #endif |
1036 | /* Cleanup if finished */ |
1037 | cleanup = (thread->state & PERL_ITHR_FINISHED); |
1038 | MUTEX_UNLOCK(&thread->mutex); |
1039 | |
4dcb9e53 |
1040 | MUTEX_LOCK(&create_destruct_mutex); |
1041 | if (cleanup) { |
1042 | joinable_threads--; |
1043 | } else { |
1044 | running_threads--; |
1045 | detached_threads++; |
1046 | } |
1047 | MUTEX_UNLOCK(&create_destruct_mutex); |
1048 | |
1049 | if (cleanup) { |
fcea4b7c |
1050 | S_ithread_destruct(aTHX_ thread); |
4dcb9e53 |
1051 | } |
f4cc38af |
1052 | |
47ba8780 |
1053 | |
1054 | void |
c0003851 |
1055 | ithread_kill(...) |
1056 | PREINIT: |
1057 | ithread *thread; |
1058 | char *sig_name; |
1059 | IV signal; |
1060 | CODE: |
1061 | /* Must have safe signals */ |
1062 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
4dcb9e53 |
1063 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
c0003851 |
1064 | |
1065 | /* Object method only */ |
1066 | if (! sv_isobject(ST(0))) |
1067 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
1068 | |
c0003851 |
1069 | /* Get signal */ |
1070 | sig_name = SvPV_nolen(ST(1)); |
1071 | if (isALPHA(*sig_name)) { |
1072 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') |
1073 | sig_name += 3; |
404aaa48 |
1074 | if ((signal = whichsig(sig_name)) < 0) |
c0003851 |
1075 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
1076 | } else |
1077 | signal = SvIV(ST(1)); |
1078 | |
1079 | /* Set the signal for the thread */ |
4dcb9e53 |
1080 | thread = SV_to_ithread(aTHX_ ST(0)); |
1081 | MUTEX_LOCK(&thread->mutex); |
c0003851 |
1082 | { |
1083 | dTHXa(thread->interp); |
1084 | PL_psig_pend[signal]++; |
1085 | PL_sig_pending = 1; |
1086 | } |
4dcb9e53 |
1087 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1088 | |
1089 | /* Return the thread to allow for method chaining */ |
1090 | ST(0) = ST(0); |
1091 | /* XSRETURN(1); - implied */ |
1092 | |
1093 | |
1094 | void |
f4cc38af |
1095 | ithread_DESTROY(...) |
1096 | CODE: |
fcea4b7c |
1097 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1098 | |
1099 | |
1100 | void |
1101 | ithread_equal(...) |
fc04eb16 |
1102 | PREINIT: |
1103 | int are_equal = 0; |
f4cc38af |
1104 | CODE: |
fc04eb16 |
1105 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1106 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1107 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1108 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1109 | are_equal = (thr1->tid == thr2->tid); |
1110 | } |
1111 | if (are_equal) { |
1112 | XST_mYES(0); |
f4cc38af |
1113 | } else { |
fc04eb16 |
1114 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1115 | XST_mIV(0, 0); |
1116 | } |
1117 | /* XSRETURN(1); - implied */ |
1118 | |
47ba8780 |
1119 | |
47ba8780 |
1120 | void |
f4cc38af |
1121 | ithread_object(...) |
1122 | PREINIT: |
1123 | char *classname; |
1124 | UV tid; |
fc04eb16 |
1125 | ithread *thread; |
f4cc38af |
1126 | int found = 0; |
1127 | CODE: |
1128 | /* Class method only */ |
1129 | if (SvROK(ST(0))) |
1130 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
1131 | classname = (char *)SvPV_nolen(ST(0)); |
1132 | |
1133 | if ((items < 2) || ! SvOK(ST(1))) { |
1134 | XSRETURN_UNDEF; |
1135 | } |
1136 | |
fc04eb16 |
1137 | /* threads->object($tid) */ |
f4cc38af |
1138 | tid = SvUV(ST(1)); |
1139 | |
1140 | /* Walk through threads list */ |
1141 | MUTEX_LOCK(&create_destruct_mutex); |
fc04eb16 |
1142 | for (thread = threads->next; |
1143 | thread != threads; |
1144 | thread = thread->next) |
f4cc38af |
1145 | { |
1146 | /* Look for TID, but ignore detached or joined threads */ |
fc04eb16 |
1147 | if ((thread->tid != tid) || |
1148 | (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
f4cc38af |
1149 | { |
1150 | continue; |
1151 | } |
1152 | /* Put object on stack */ |
fc04eb16 |
1153 | ST(0) = sv_2mortal(ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1154 | found = 1; |
1155 | break; |
1156 | } |
1157 | MUTEX_UNLOCK(&create_destruct_mutex); |
1158 | if (! found) { |
1159 | XSRETURN_UNDEF; |
1160 | } |
1161 | /* XSRETURN(1); - implied */ |
1162 | |
1163 | |
1164 | void |
1165 | ithread__handle(...); |
1166 | PREINIT: |
1167 | ithread *thread; |
1168 | CODE: |
1169 | thread = SV_to_ithread(aTHX_ ST(0)); |
1170 | #ifdef WIN32 |
fcea4b7c |
1171 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1172 | #else |
75ba4ae2 |
1173 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1174 | #endif |
1175 | /* XSRETURN(1); - implied */ |
68795e93 |
1176 | |
514612b7 |
1177 | |
1178 | void |
1179 | ithread_get_stack_size(...) |
1180 | PREINIT: |
1181 | IV stack_size; |
1182 | CODE: |
1183 | if (sv_isobject(ST(0))) { |
1184 | /* $thr->get_stack_size() */ |
1185 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1186 | stack_size = thread->stack_size; |
1187 | } else { |
1188 | /* threads->get_stack_size() */ |
1189 | stack_size = default_stack_size; |
1190 | } |
1191 | XST_mIV(0, stack_size); |
1192 | /* XSRETURN(1); - implied */ |
1193 | |
1194 | |
1195 | void |
1196 | ithread_set_stack_size(...) |
1197 | PREINIT: |
1198 | IV old_size; |
1199 | CODE: |
1200 | if (items != 2) |
1201 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
1202 | if (sv_isobject(ST(0))) |
1203 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
1204 | |
1205 | old_size = default_stack_size; |
1206 | default_stack_size = good_stack_size(aTHX_ SvIV(ST(1))); |
1207 | XST_mIV(0, old_size); |
1208 | /* XSRETURN(1); - implied */ |
1209 | |
ead32952 |
1210 | |
1211 | void |
1212 | ithread_is_running(...) |
1213 | PREINIT: |
1214 | ithread *thread; |
1215 | CODE: |
1216 | /* Object method only */ |
1217 | if (! sv_isobject(ST(0))) |
1218 | Perl_croak(aTHX_ "Usage: $thr->is_running()"); |
1219 | |
1220 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1221 | MUTEX_LOCK(&thread->mutex); |
1222 | ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes; |
1223 | MUTEX_UNLOCK(&thread->mutex); |
1224 | /* XSRETURN(1); - implied */ |
1225 | |
1226 | |
1227 | void |
1228 | ithread_is_detached(...) |
1229 | PREINIT: |
1230 | ithread *thread; |
1231 | CODE: |
1232 | thread = SV_to_ithread(aTHX_ ST(0)); |
1233 | MUTEX_LOCK(&thread->mutex); |
1234 | ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no; |
1235 | MUTEX_UNLOCK(&thread->mutex); |
1236 | /* XSRETURN(1); - implied */ |
1237 | |
1238 | |
1239 | void |
1240 | ithread_is_joinable(...) |
1241 | PREINIT: |
1242 | ithread *thread; |
1243 | CODE: |
1244 | /* Object method only */ |
1245 | if (! sv_isobject(ST(0))) |
1246 | Perl_croak(aTHX_ "Usage: $thr->is_joinable()"); |
1247 | |
1248 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1249 | MUTEX_LOCK(&thread->mutex); |
1250 | ST(0) = ((thread->state & PERL_ITHR_FINISHED) && |
1251 | ! (thread->state & (PERL_ITHR_DETACHED|PERL_ITHR_JOINED))) |
1252 | ? &PL_sv_yes : &PL_sv_no; |
1253 | MUTEX_UNLOCK(&thread->mutex); |
1254 | /* XSRETURN(1); - implied */ |
1255 | |
1256 | |
1257 | void |
1258 | ithread_wantarray(...) |
1259 | PREINIT: |
1260 | ithread *thread; |
1261 | CODE: |
1262 | thread = SV_to_ithread(aTHX_ ST(0)); |
1263 | MUTEX_LOCK(&thread->mutex); |
1264 | ST(0) = (thread->gimme & G_ARRAY) ? &PL_sv_yes : |
1265 | (thread->gimme & G_VOID) ? &PL_sv_undef |
1266 | /* G_SCALAR */ : &PL_sv_no; |
1267 | MUTEX_UNLOCK(&thread->mutex); |
1268 | /* XSRETURN(1); - implied */ |
1269 | |
73e09c8f |
1270 | #endif /* USE_ITHREADS */ |
1271 | |
fc04eb16 |
1272 | |
68795e93 |
1273 | BOOT: |
1274 | { |
73e09c8f |
1275 | #ifdef USE_ITHREADS |
fc04eb16 |
1276 | /* The 'main' thread is thread 0. |
1277 | * It is detached (unjoinable) and immortal. |
1278 | */ |
62375a60 |
1279 | |
fc04eb16 |
1280 | ithread *thread; |
1281 | MY_CXT_INIT; |
1282 | |
1283 | PL_perl_destruct_level = 2; |
1284 | MUTEX_INIT(&create_destruct_mutex); |
1285 | MUTEX_LOCK(&create_destruct_mutex); |
1286 | |
1287 | PL_threadhook = &Perl_ithread_hook; |
1288 | |
1289 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
1290 | if (! thread) { |
1291 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
1292 | my_exit(1); |
1293 | } |
1294 | Zero(thread, 1, ithread); |
1295 | |
fc04eb16 |
1296 | MUTEX_INIT(&thread->mutex); |
1297 | |
1298 | thread->tid = tid_counter++; /* Thread 0 */ |
1299 | |
1300 | /* Head of the threads list */ |
1301 | threads = thread; |
1302 | thread->next = thread; |
1303 | thread->prev = thread; |
1304 | |
1305 | thread->count = 1; /* Immortal */ |
1306 | |
1307 | thread->interp = aTHX; |
1308 | thread->state = PERL_ITHR_DETACHED; /* Detached */ |
514612b7 |
1309 | thread->stack_size = default_stack_size; |
fc04eb16 |
1310 | # ifdef WIN32 |
1311 | thread->thr = GetCurrentThreadId(); |
1312 | # else |
1313 | thread->thr = pthread_self(); |
1314 | # endif |
1315 | |
fc04eb16 |
1316 | S_ithread_set(aTHX_ thread); |
1317 | MUTEX_UNLOCK(&create_destruct_mutex); |
73e09c8f |
1318 | #endif /* USE_ITHREADS */ |
68795e93 |
1319 | } |