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 */ |
6158f8b3 |
48 | #define PERL_ITHR_DETACHED 1 /* thread has been detached */ |
49 | #define PERL_ITHR_JOINED 2 /* thread has been joined */ |
50 | #define PERL_ITHR_FINISHED 4 /* thread has finished execution */ |
51 | #define PERL_ITHR_THREAD_EXIT_ONLY 8 /* exit() only exits current thread */ |
52 | #define PERL_ITHR_NONVIABLE 16 /* thread creation failed */ |
53 | #define PERL_ITHR_DIED 32 /* thread finished by dying */ |
54 | |
55 | #define PERL_ITHR_UNCALLABLE (PERL_ITHR_DETACHED|PERL_ITHR_JOINED) |
56 | |
fc04eb16 |
57 | |
58 | typedef struct _ithread { |
59 | struct _ithread *next; /* Next thread in the list */ |
60 | struct _ithread *prev; /* Prev thread in the list */ |
61 | PerlInterpreter *interp; /* The threads interpreter */ |
62 | UV tid; /* Threads module's thread id */ |
63 | perl_mutex mutex; /* Mutex for updating things in this struct */ |
6158f8b3 |
64 | int count; /* reference count. See S_ithread_create */ |
fc04eb16 |
65 | int state; /* Detached, joined, finished, etc. */ |
66 | int gimme; /* Context of create */ |
67 | SV *init_function; /* Code to run */ |
68 | SV *params; /* Args to pass function */ |
68795e93 |
69 | #ifdef WIN32 |
fc04eb16 |
70 | DWORD thr; /* OS's idea if thread id */ |
71 | HANDLE handle; /* OS's waitable handle */ |
68795e93 |
72 | #else |
fc04eb16 |
73 | pthread_t thr; /* OS's handle for the thread */ |
68795e93 |
74 | #endif |
514612b7 |
75 | IV stack_size; |
955c272e |
76 | SV *err; /* Error from abnormally terminated thread */ |
77 | char *err_class; /* Error object's classname if applicable */ |
68795e93 |
78 | } ithread; |
79 | |
fc04eb16 |
80 | |
5c6ff896 |
81 | #define MY_CXT_KEY "threads::_cxt" XS_VERSION |
628ab322 |
82 | |
83 | typedef struct { |
861d5cbe |
84 | /* Used by Perl interpreter for thread context switching */ |
85 | ithread *context; |
628ab322 |
86 | } my_cxt_t; |
87 | |
88 | START_MY_CXT |
89 | |
68795e93 |
90 | |
5c6ff896 |
91 | #define MY_POOL_KEY "threads::_pool" XS_VERSION |
68795e93 |
92 | |
5c6ff896 |
93 | typedef struct { |
94 | /* Structure for 'main' thread |
95 | * Also forms the 'base' for the doubly-linked list of threads */ |
96 | ithread main_thread; |
97 | |
98 | /* Protects the creation and destruction of threads*/ |
99 | perl_mutex create_destruct_mutex; |
100 | |
101 | UV tid_counter; |
102 | IV joinable_threads; |
103 | IV running_threads; |
104 | IV detached_threads; |
e9a908c9 |
105 | IV total_threads; |
5c6ff896 |
106 | IV default_stack_size; |
107 | IV page_size; |
108 | } my_pool_t; |
109 | |
110 | #define dMY_POOL \ |
111 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, \ |
112 | sizeof(MY_POOL_KEY)-1, TRUE); \ |
113 | my_pool_t *my_poolp = INT2PTR(my_pool_t*, SvUV(my_pool_sv)) |
114 | |
115 | #define MY_POOL (*my_poolp) |
c05ae023 |
116 | |
117 | |
fc04eb16 |
118 | /* Used by Perl interpreter for thread context switching */ |
861d5cbe |
119 | STATIC void |
fc04eb16 |
120 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
121 | { |
628ab322 |
122 | dMY_CXT; |
861d5cbe |
123 | MY_CXT.context = thread; |
c05ae023 |
124 | } |
125 | |
861d5cbe |
126 | STATIC ithread * |
fc04eb16 |
127 | S_ithread_get(pTHX) |
128 | { |
628ab322 |
129 | dMY_CXT; |
861d5cbe |
130 | return (MY_CXT.context); |
c05ae023 |
131 | } |
132 | |
133 | |
fc04eb16 |
134 | /* Free any data (such as the Perl interpreter) attached to an ithread |
135 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
136 | * but the PVX is. Must be called with thread->mutex already held. |
2e676467 |
137 | */ |
861d5cbe |
138 | STATIC void |
fc04eb16 |
139 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
140 | { |
141 | PerlInterpreter *interp; |
fc04eb16 |
142 | |
adc09a0e |
143 | assert(((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
144 | (thread->state & PERL_ITHR_UNCALLABLE)) |
adc09a0e |
145 | || |
146 | (thread->state & PERL_ITHR_NONVIABLE)); |
2e676467 |
147 | |
148 | interp = thread->interp; |
149 | if (interp) { |
fc04eb16 |
150 | dTHXa(interp); |
151 | |
152 | PERL_SET_CONTEXT(interp); |
153 | S_ithread_set(aTHX_ thread); |
f2cba68d |
154 | |
fc04eb16 |
155 | SvREFCNT_dec(thread->params); |
156 | thread->params = Nullsv; |
2e676467 |
157 | |
955c272e |
158 | if (thread->err) { |
159 | SvREFCNT_dec(thread->err); |
160 | thread->err = Nullsv; |
161 | } |
162 | |
fc04eb16 |
163 | perl_destruct(interp); |
9ca4d7fd |
164 | perl_free(interp); |
fc04eb16 |
165 | thread->interp = NULL; |
2e676467 |
166 | } |
fc04eb16 |
167 | |
2e676467 |
168 | PERL_SET_CONTEXT(aTHX); |
169 | } |
170 | |
68795e93 |
171 | |
6158f8b3 |
172 | /* Decrement the refcount of an ithread, and if it reaches zero, free it. |
173 | * Must be called with the mutex held. |
174 | * On return, mutex is released (or destroyed) */ |
175 | |
861d5cbe |
176 | STATIC void |
6158f8b3 |
177 | S_ithread_free(pTHX_ ithread *thread) |
68795e93 |
178 | { |
385d56e4 |
179 | #ifdef WIN32 |
fc04eb16 |
180 | HANDLE handle; |
385d56e4 |
181 | #endif |
adc09a0e |
182 | dMY_POOL; |
183 | |
6158f8b3 |
184 | if (! (thread->state & PERL_ITHR_NONVIABLE)) { |
185 | assert(thread->count > 0); |
186 | if (--thread->count > 0) { |
187 | MUTEX_UNLOCK(&thread->mutex); |
188 | return; |
189 | } |
190 | assert((thread->state & PERL_ITHR_FINISHED) |
191 | && (thread->state & PERL_ITHR_UNCALLABLE)); |
fc04eb16 |
192 | } |
adc09a0e |
193 | MUTEX_UNLOCK(&thread->mutex); |
9feacc09 |
194 | |
fc04eb16 |
195 | /* Main thread (0) is immortal and should never get here */ |
196 | assert(thread->tid != 0); |
197 | |
198 | /* Remove from circular list of threads */ |
5c6ff896 |
199 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
adc09a0e |
200 | assert(thread->prev && thread->next); |
201 | thread->next->prev = thread->prev; |
202 | thread->prev->next = thread->next; |
fc04eb16 |
203 | thread->next = NULL; |
204 | thread->prev = NULL; |
5c6ff896 |
205 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
c2f2a82b |
206 | |
fc04eb16 |
207 | /* Thread is now disowned */ |
9ca4d7fd |
208 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
209 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
210 | |
211 | #ifdef WIN32 |
fc04eb16 |
212 | handle = thread->handle; |
213 | thread->handle = NULL; |
385d56e4 |
214 | #endif |
fc04eb16 |
215 | MUTEX_UNLOCK(&thread->mutex); |
216 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
217 | |
c7667023 |
218 | #ifdef WIN32 |
fea7688c |
219 | if (handle) { |
fc04eb16 |
220 | CloseHandle(handle); |
fea7688c |
221 | } |
c7667023 |
222 | #endif |
385d56e4 |
223 | |
fc04eb16 |
224 | /* Call PerlMemShared_free() in the context of the "first" interpreter |
225 | * per http://www.nntp.perl.org/group/perl.perl5.porters/110772 |
226 | */ |
5c6ff896 |
227 | aTHX = MY_POOL.main_thread.interp; |
fc04eb16 |
228 | PerlMemShared_free(thread); |
ae3fba3d |
229 | |
230 | /* total_threads >= 1 is used to veto cleanup by the main thread, |
231 | * should it happen to exit while other threads still exist. |
232 | * Decrement this as the very last thing in the thread's existence, |
233 | * otherwise MY_POOL and global state such as PL_op_mutex may get |
234 | * freed while we're still using it |
235 | */ |
236 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
237 | MY_POOL.total_threads--; |
238 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
68795e93 |
239 | } |
240 | |
fc04eb16 |
241 | |
6158f8b3 |
242 | |
243 | static void |
244 | S_ithread_count_inc(pTHX_ ithread *thread) |
245 | { |
246 | MUTEX_LOCK(&thread->mutex); |
247 | thread->count++; |
248 | MUTEX_UNLOCK(&thread->mutex); |
249 | } |
250 | |
251 | |
252 | |
69a9b4b8 |
253 | /* Warn if exiting with any unjoined threads */ |
861d5cbe |
254 | STATIC int |
69a9b4b8 |
255 | S_exit_warning(pTHX) |
62375a60 |
256 | { |
e9a908c9 |
257 | int veto_cleanup, warn; |
adc09a0e |
258 | dMY_POOL; |
69a9b4b8 |
259 | |
5c6ff896 |
260 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
e9a908c9 |
261 | veto_cleanup = (MY_POOL.total_threads > 0); |
262 | warn = (MY_POOL.running_threads || MY_POOL.joinable_threads); |
5c6ff896 |
263 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
60bd5ef6 |
264 | |
e9a908c9 |
265 | if (warn) { |
fc04eb16 |
266 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
267 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
268 | IVdf " running and unjoined\n\t%" |
269 | IVdf " finished and unjoined\n\t%" |
270 | IVdf " running and detached\n", |
5c6ff896 |
271 | MY_POOL.running_threads, |
272 | MY_POOL.joinable_threads, |
273 | MY_POOL.detached_threads); |
fc04eb16 |
274 | } |
62375a60 |
275 | } |
69a9b4b8 |
276 | |
fc04eb16 |
277 | return (veto_cleanup); |
62375a60 |
278 | } |
279 | |
ae3fba3d |
280 | /* Called from perl_destruct() in each thread. If it's the main thread, |
281 | * stop it from freeing everything if there are other threads still |
282 | * running */ |
283 | |
69a9b4b8 |
284 | int |
285 | Perl_ithread_hook(pTHX) |
286 | { |
5c6ff896 |
287 | dMY_POOL; |
b5c80a23 |
288 | return ((aTHX == MY_POOL.main_thread.interp) ? S_exit_warning(aTHX) : 0); |
69a9b4b8 |
289 | } |
290 | |
68795e93 |
291 | |
292 | /* MAGIC (in mg.h sense) hooks */ |
293 | |
294 | int |
295 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
296 | { |
fc04eb16 |
297 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
298 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
299 | SvIOK_on(sv); |
fc04eb16 |
300 | return (0); |
68795e93 |
301 | } |
302 | |
303 | int |
304 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
305 | { |
f2cba68d |
306 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
307 | MUTEX_LOCK(&thread->mutex); |
6158f8b3 |
308 | S_ithread_free(aTHX_ thread); /* releases MUTEX */ |
fc04eb16 |
309 | return (0); |
68795e93 |
310 | } |
311 | |
6158f8b3 |
312 | |
68795e93 |
313 | int |
314 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
315 | { |
6158f8b3 |
316 | S_ithread_count_inc(aTHX_ (ithread *)mg->mg_ptr); |
fc04eb16 |
317 | return (0); |
68795e93 |
318 | } |
319 | |
320 | MGVTBL ithread_vtbl = { |
fc04eb16 |
321 | ithread_mg_get, /* get */ |
322 | 0, /* set */ |
323 | 0, /* len */ |
324 | 0, /* clear */ |
325 | ithread_mg_free, /* free */ |
326 | 0, /* copy */ |
327 | ithread_mg_dup /* dup */ |
68795e93 |
328 | }; |
329 | |
47ba8780 |
330 | |
514612b7 |
331 | /* Provided default, minimum and rational stack sizes */ |
861d5cbe |
332 | STATIC IV |
333 | S_good_stack_size(pTHX_ IV stack_size) |
514612b7 |
334 | { |
5c6ff896 |
335 | dMY_POOL; |
336 | |
514612b7 |
337 | /* Use default stack size if no stack size specified */ |
fea7688c |
338 | if (! stack_size) { |
5c6ff896 |
339 | return (MY_POOL.default_stack_size); |
fea7688c |
340 | } |
514612b7 |
341 | |
342 | #ifdef PTHREAD_STACK_MIN |
343 | /* Can't use less than minimum */ |
344 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
345 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
346 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
347 | } |
348 | return (PTHREAD_STACK_MIN); |
349 | } |
350 | #endif |
351 | |
352 | /* Round up to page size boundary */ |
5c6ff896 |
353 | if (MY_POOL.page_size <= 0) { |
d305c2c9 |
354 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
355 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
356 | # ifdef _SC_PAGESIZE |
5c6ff896 |
357 | MY_POOL.page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
358 | # else |
5c6ff896 |
359 | MY_POOL.page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
360 | # endif |
5c6ff896 |
361 | if ((long)MY_POOL.page_size < 0) { |
514612b7 |
362 | if (errno) { |
363 | SV * const error = get_sv("@", FALSE); |
364 | (void)SvUPGRADE(error, SVt_PV); |
365 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
366 | } else { |
367 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
368 | } |
369 | } |
d305c2c9 |
370 | #else |
371 | # ifdef HAS_GETPAGESIZE |
5c6ff896 |
372 | MY_POOL.page_size = getpagesize(); |
514612b7 |
373 | # else |
d305c2c9 |
374 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
5c6ff896 |
375 | MY_POOL.page_size = PAGESIZE; |
d305c2c9 |
376 | # else |
5c6ff896 |
377 | MY_POOL.page_size = 8192; /* A conservative default */ |
d305c2c9 |
378 | # endif |
514612b7 |
379 | # endif |
5c6ff896 |
380 | if (MY_POOL.page_size <= 0) { |
381 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)MY_POOL.page_size); |
fea7688c |
382 | } |
514612b7 |
383 | #endif |
384 | } |
5c6ff896 |
385 | stack_size = ((stack_size + (MY_POOL.page_size - 1)) / MY_POOL.page_size) * MY_POOL.page_size; |
514612b7 |
386 | |
387 | return (stack_size); |
388 | } |
389 | |
390 | |
fc04eb16 |
391 | /* Starts executing the thread. |
392 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
393 | */ |
47ba8780 |
394 | #ifdef WIN32 |
861d5cbe |
395 | STATIC THREAD_RET_TYPE |
fc04eb16 |
396 | S_ithread_run(LPVOID arg) |
47ba8780 |
397 | #else |
861d5cbe |
398 | STATIC void * |
fc04eb16 |
399 | S_ithread_run(void * arg) |
47ba8780 |
400 | #endif |
fc04eb16 |
401 | { |
402 | ithread *thread = (ithread *)arg; |
69a9b4b8 |
403 | int jmp_rc = 0; |
404 | I32 oldscope; |
955c272e |
405 | int exit_app = 0; /* Thread terminated using 'exit' */ |
69a9b4b8 |
406 | int exit_code = 0; |
955c272e |
407 | int died = 0; /* Thread terminated abnormally */ |
f2cba68d |
408 | |
69a9b4b8 |
409 | dJMPENV; |
410 | |
fc04eb16 |
411 | dTHXa(thread->interp); |
47ba8780 |
412 | |
5c6ff896 |
413 | dMY_POOL; |
414 | |
9ca4d7fd |
415 | /* Blocked until ->create() call finishes */ |
fc04eb16 |
416 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
417 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
418 | |
419 | PERL_SET_CONTEXT(thread->interp); |
420 | S_ithread_set(aTHX_ thread); |
47ba8780 |
421 | |
fc04eb16 |
422 | PL_perl_destruct_level = 2; |
f2cba68d |
423 | |
fc04eb16 |
424 | { |
425 | AV *params = (AV *)SvRV(thread->params); |
426 | int len = (int)av_len(params)+1; |
427 | int ii; |
428 | |
429 | dSP; |
430 | ENTER; |
431 | SAVETMPS; |
432 | |
433 | /* Put args on the stack */ |
434 | PUSHMARK(SP); |
435 | for (ii=0; ii < len; ii++) { |
436 | XPUSHs(av_shift(params)); |
437 | } |
438 | PUTBACK; |
439 | |
4dcb9e53 |
440 | oldscope = PL_scopestack_ix; |
441 | JMPENV_PUSH(jmp_rc); |
442 | if (jmp_rc == 0) { |
443 | /* Run the specified function */ |
444 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
445 | } else if (jmp_rc == 2) { |
69a9b4b8 |
446 | /* Thread exited */ |
447 | exit_app = 1; |
448 | exit_code = STATUS_CURRENT; |
4dcb9e53 |
449 | while (PL_scopestack_ix > oldscope) { |
450 | LEAVE; |
451 | } |
452 | } |
453 | JMPENV_POP; |
fc04eb16 |
454 | |
455 | /* Remove args from stack and put back in params array */ |
456 | SPAGAIN; |
457 | for (ii=len-1; ii >= 0; ii--) { |
458 | SV *sv = POPs; |
4dcb9e53 |
459 | if (jmp_rc == 0) { |
460 | av_store(params, ii, SvREFCNT_inc(sv)); |
461 | } |
fc04eb16 |
462 | } |
463 | |
4dcb9e53 |
464 | FREETMPS; |
465 | LEAVE; |
466 | |
955c272e |
467 | /* Check for abnormal termination */ |
468 | if (SvTRUE(ERRSV)) { |
469 | died = PERL_ITHR_DIED; |
470 | thread->err = newSVsv(ERRSV); |
471 | /* If ERRSV is an object, remember the classname and then |
472 | * rebless into 'main' so it will survive 'cloning' |
473 | */ |
474 | if (sv_isobject(thread->err)) { |
475 | thread->err_class = HvNAME(SvSTASH(SvRV(thread->err))); |
476 | sv_bless(thread->err, gv_stashpv("main", 0)); |
477 | } |
478 | |
479 | if (ckWARN_d(WARN_THREADS)) { |
480 | oldscope = PL_scopestack_ix; |
481 | JMPENV_PUSH(jmp_rc); |
482 | if (jmp_rc == 0) { |
483 | /* Warn that thread died */ |
484 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
485 | } else if (jmp_rc == 2) { |
486 | /* Warn handler exited */ |
487 | exit_app = 1; |
488 | exit_code = STATUS_CURRENT; |
489 | while (PL_scopestack_ix > oldscope) { |
490 | LEAVE; |
491 | } |
4dcb9e53 |
492 | } |
955c272e |
493 | JMPENV_POP; |
4dcb9e53 |
494 | } |
fc04eb16 |
495 | } |
496 | |
fc04eb16 |
497 | /* Release function ref */ |
498 | SvREFCNT_dec(thread->init_function); |
499 | thread->init_function = Nullsv; |
500 | } |
62375a60 |
501 | |
fc04eb16 |
502 | PerlIO_flush((PerlIO *)NULL); |
503 | |
5c6ff896 |
504 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
505 | MUTEX_LOCK(&thread->mutex); |
506 | /* Mark as finished */ |
955c272e |
507 | thread->state |= (PERL_ITHR_FINISHED | died); |
69a9b4b8 |
508 | /* Clear exit flag if required */ |
fea7688c |
509 | if (thread->state & PERL_ITHR_THREAD_EXIT_ONLY) { |
69a9b4b8 |
510 | exit_app = 0; |
fea7688c |
511 | } |
fc04eb16 |
512 | |
69a9b4b8 |
513 | /* Adjust thread status counts */ |
adc09a0e |
514 | if (thread->state & PERL_ITHR_DETACHED) { |
5c6ff896 |
515 | MY_POOL.detached_threads--; |
4dcb9e53 |
516 | } else { |
5c6ff896 |
517 | MY_POOL.running_threads--; |
518 | MY_POOL.joinable_threads++; |
5168baf3 |
519 | } |
adc09a0e |
520 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
521 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
69a9b4b8 |
522 | |
523 | /* Exit application if required */ |
524 | if (exit_app) { |
525 | oldscope = PL_scopestack_ix; |
526 | JMPENV_PUSH(jmp_rc); |
527 | if (jmp_rc == 0) { |
528 | /* Warn if there are unjoined threads */ |
529 | S_exit_warning(aTHX); |
530 | } else if (jmp_rc == 2) { |
531 | /* Warn handler exited */ |
532 | exit_code = STATUS_CURRENT; |
533 | while (PL_scopestack_ix > oldscope) { |
534 | LEAVE; |
535 | } |
536 | } |
537 | JMPENV_POP; |
538 | |
539 | my_exit(exit_code); |
540 | } |
541 | |
6158f8b3 |
542 | MUTEX_LOCK(&thread->mutex); |
543 | S_ithread_free(aTHX_ thread); /* releases MUTEX */ |
91604d21 |
544 | |
47ba8780 |
545 | #ifdef WIN32 |
fc04eb16 |
546 | return ((DWORD)0); |
e8f2bb9a |
547 | #else |
fc04eb16 |
548 | return (0); |
47ba8780 |
549 | #endif |
68795e93 |
550 | } |
551 | |
fc04eb16 |
552 | |
553 | /* Type conversion helper functions */ |
fea7688c |
554 | |
861d5cbe |
555 | STATIC SV * |
556 | S_ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
68795e93 |
557 | { |
558 | SV *sv; |
559 | MAGIC *mg; |
fc04eb16 |
560 | |
6158f8b3 |
561 | if (inc) |
562 | S_ithread_count_inc(aTHX_ thread); |
fc04eb16 |
563 | |
564 | if (! obj) { |
565 | obj = newSV(0); |
68795e93 |
566 | } |
fc04eb16 |
567 | |
568 | sv = newSVrv(obj, classname); |
569 | sv_setiv(sv, PTR2IV(thread)); |
570 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
571 | mg->mg_flags |= MGf_DUP; |
572 | SvREADONLY_on(sv); |
fc04eb16 |
573 | |
574 | return (obj); |
68795e93 |
575 | } |
47ba8780 |
576 | |
861d5cbe |
577 | STATIC ithread * |
578 | S_SV_to_ithread(pTHX_ SV *sv) |
68795e93 |
579 | { |
fc04eb16 |
580 | /* Argument is a thread */ |
581 | if (SvROK(sv)) { |
582 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
583 | } |
584 | /* Argument is classname, therefore return current thread */ |
585 | return (S_ithread_get(aTHX)); |
47ba8780 |
586 | } |
587 | |
47ba8780 |
588 | |
fc04eb16 |
589 | /* threads->create() |
590 | * Called in context of parent thread. |
5c6ff896 |
591 | * Called with MY_POOL.create_destruct_mutex locked. (Unlocked on error.) |
fc04eb16 |
592 | */ |
861d5cbe |
593 | STATIC ithread * |
fc04eb16 |
594 | S_ithread_create( |
9ca4d7fd |
595 | pTHX_ SV *init_function, |
514612b7 |
596 | IV stack_size, |
9d9ff5b1 |
597 | int gimme, |
69a9b4b8 |
598 | int exit_opt, |
fc04eb16 |
599 | SV *params) |
68795e93 |
600 | { |
fc04eb16 |
601 | ithread *thread; |
fc04eb16 |
602 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
603 | |
fc04eb16 |
604 | SV **tmps_tmp = PL_tmps_stack; |
605 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
606 | #ifndef WIN32 |
fc04eb16 |
607 | int rc_stack_size = 0; |
608 | int rc_thread_create = 0; |
d94006e8 |
609 | #endif |
adc09a0e |
610 | dMY_POOL; |
3b1c3273 |
611 | |
adc09a0e |
612 | /* Allocate thread structure in context of the main thread's interpreter */ |
5c6ff896 |
613 | { |
614 | PERL_SET_CONTEXT(MY_POOL.main_thread.interp); |
615 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
616 | } |
617 | PERL_SET_CONTEXT(aTHX); |
fc04eb16 |
618 | if (!thread) { |
5c6ff896 |
619 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
620 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
621 | my_exit(1); |
622 | } |
623 | Zero(thread, 1, ithread); |
624 | |
625 | /* Add to threads list */ |
5c6ff896 |
626 | thread->next = &MY_POOL.main_thread; |
627 | thread->prev = MY_POOL.main_thread.prev; |
628 | MY_POOL.main_thread.prev = thread; |
fc04eb16 |
629 | thread->prev->next = thread; |
e9a908c9 |
630 | MY_POOL.total_threads++; |
c05ae023 |
631 | |
6158f8b3 |
632 | /* 1 ref to be held by the local var 'thread' in S_ithread_run() |
633 | * 1 ref to be held by the threads object that we assume we will |
634 | * be embedded in upon our return |
635 | * 1 ref to be the responsibility of join/detach, so we don't get freed |
636 | until join/detach, even if no thread objects remain. This |
637 | allows the following to work: |
638 | { threads->new(sub{...}); } threads->object(1)->join; |
fc04eb16 |
639 | */ |
6158f8b3 |
640 | thread->count = 3; |
fc04eb16 |
641 | |
9ca4d7fd |
642 | /* Block new thread until ->create() call finishes */ |
fc04eb16 |
643 | MUTEX_INIT(&thread->mutex); |
9ca4d7fd |
644 | MUTEX_LOCK(&thread->mutex); |
645 | |
5c6ff896 |
646 | thread->tid = MY_POOL.tid_counter++; |
861d5cbe |
647 | thread->stack_size = S_good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
648 | thread->gimme = gimme; |
69a9b4b8 |
649 | thread->state = exit_opt; |
fc04eb16 |
650 | |
651 | /* "Clone" our interpreter into the thread's interpreter. |
652 | * This gives thread access to "static data" and code. |
653 | */ |
654 | PerlIO_flush((PerlIO *)NULL); |
655 | S_ithread_set(aTHX_ thread); |
656 | |
657 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
658 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
659 | set during the clone */ |
3b1c3273 |
660 | |
47ba8780 |
661 | #ifdef WIN32 |
fc04eb16 |
662 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
663 | #else |
fc04eb16 |
664 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
665 | #endif |
47ba8780 |
666 | |
fc04eb16 |
667 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
668 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
669 | * context for the duration of our work for new interpreter. |
670 | */ |
671 | { |
894eec8b |
672 | CLONE_PARAMS clone_param; |
673 | |
fc04eb16 |
674 | dTHXa(thread->interp); |
675 | |
676 | MY_CXT_CLONE; |
677 | |
678 | /* Here we remove END blocks since they should only run in the thread |
679 | * they are created |
680 | */ |
681 | SvREFCNT_dec(PL_endav); |
682 | PL_endav = newAV(); |
404aaa48 |
683 | |
894eec8b |
684 | clone_param.flags = 0; |
f2e0bb91 |
685 | if (SvPOK(init_function)) { |
686 | thread->init_function = newSV(0); |
687 | sv_copypv(thread->init_function, init_function); |
688 | } else { |
f2e0bb91 |
689 | thread->init_function = sv_dup(init_function, &clone_param); |
690 | if (SvREFCNT(thread->init_function) == 0) { |
d4315dd6 |
691 | SvREFCNT_inc_void(thread->init_function); |
f2e0bb91 |
692 | } |
fc04eb16 |
693 | } |
694 | |
695 | thread->params = sv_dup(params, &clone_param); |
d4315dd6 |
696 | SvREFCNT_inc_void(thread->params); |
fc04eb16 |
697 | |
698 | /* The code below checks that anything living on the tmps stack and |
699 | * has been cloned (so it lives in the ptr_table) has a refcount |
700 | * higher than 0. |
701 | * |
702 | * If the refcount is 0 it means that a something on the stack/context |
703 | * was holding a reference to it and since we init_stacks() in |
704 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
705 | * The reason it was cloned was that it lived on the @_ stack. |
706 | * |
707 | * Example of this can be found in bugreport 15837 where calls in the |
708 | * parameter list end up as a temp. |
709 | * |
710 | * One could argue that this fix should be in perl_clone. |
711 | */ |
712 | while (tmps_ix > 0) { |
713 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
714 | tmps_ix--; |
715 | if (sv && SvREFCNT(sv) == 0) { |
d4315dd6 |
716 | SvREFCNT_inc_void(sv); |
fc04eb16 |
717 | SvREFCNT_dec(sv); |
718 | } |
719 | } |
720 | |
721 | SvTEMP_off(thread->init_function); |
722 | ptr_table_free(PL_ptr_table); |
723 | PL_ptr_table = NULL; |
724 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
725 | } |
726 | S_ithread_set(aTHX_ current_thread); |
727 | PERL_SET_CONTEXT(aTHX); |
728 | |
729 | /* Create/start the thread */ |
47ba8780 |
730 | #ifdef WIN32 |
fc04eb16 |
731 | thread->handle = CreateThread(NULL, |
514612b7 |
732 | (DWORD)thread->stack_size, |
fc04eb16 |
733 | S_ithread_run, |
734 | (LPVOID)thread, |
514612b7 |
735 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
736 | &thread->thr); |
82c40bf6 |
737 | #else |
fc04eb16 |
738 | { |
861d5cbe |
739 | STATIC pthread_attr_t attr; |
740 | STATIC int attr_inited = 0; |
741 | STATIC int attr_joinable = PTHREAD_CREATE_JOINABLE; |
fc04eb16 |
742 | if (! attr_inited) { |
743 | pthread_attr_init(&attr); |
744 | attr_inited = 1; |
745 | } |
746 | |
fa26028c |
747 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
748 | /* Threads start out joinable */ |
749 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
750 | # endif |
fc04eb16 |
751 | |
514612b7 |
752 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
753 | /* Set thread's stack size */ |
514612b7 |
754 | if (thread->stack_size > 0) { |
755 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
756 | } |
3eb37d38 |
757 | # endif |
758 | |
fc04eb16 |
759 | /* Create the thread */ |
760 | if (! rc_stack_size) { |
761 | # ifdef OLD_PTHREADS_API |
762 | rc_thread_create = pthread_create(&thread->thr, |
763 | attr, |
764 | S_ithread_run, |
765 | (void *)thread); |
766 | # else |
767 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
768 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
769 | # endif |
770 | rc_thread_create = pthread_create(&thread->thr, |
771 | &attr, |
772 | S_ithread_run, |
773 | (void *)thread); |
19a077f6 |
774 | # endif |
fc04eb16 |
775 | } |
514612b7 |
776 | |
777 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
778 | /* Try to get thread's actual stack size */ |
779 | { |
780 | size_t stacksize; |
58a3a76c |
781 | #ifdef HPUX1020 |
782 | stacksize = pthread_attr_getstacksize(attr); |
783 | #else |
784 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
785 | #endif |
786 | if (stacksize > 0) { |
514612b7 |
787 | thread->stack_size = (IV)stacksize; |
788 | } |
514612b7 |
789 | } |
790 | # endif |
fc04eb16 |
791 | } |
82c40bf6 |
792 | #endif |
bcd9ca9b |
793 | |
fc04eb16 |
794 | /* Check for errors */ |
d94006e8 |
795 | #ifdef WIN32 |
fc04eb16 |
796 | if (thread->handle == NULL) { |
d94006e8 |
797 | #else |
fc04eb16 |
798 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
799 | #endif |
9ca4d7fd |
800 | /* Must unlock mutex for destruct call */ |
5c6ff896 |
801 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
802 | sv_2mortal(params); |
adc09a0e |
803 | thread->state |= PERL_ITHR_NONVIABLE; |
6158f8b3 |
804 | S_ithread_free(aTHX_ thread); /* releases MUTEX */ |
d94006e8 |
805 | #ifndef WIN32 |
514612b7 |
806 | if (ckWARN_d(WARN_THREADS)) { |
fea7688c |
807 | if (rc_stack_size) { |
514612b7 |
808 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
fea7688c |
809 | } else { |
514612b7 |
810 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
fea7688c |
811 | } |
514612b7 |
812 | } |
d94006e8 |
813 | #endif |
9ca4d7fd |
814 | return (NULL); |
fc04eb16 |
815 | } |
816 | |
5c6ff896 |
817 | MY_POOL.running_threads++; |
fc04eb16 |
818 | sv_2mortal(params); |
9ca4d7fd |
819 | return (thread); |
68795e93 |
820 | } |
47ba8780 |
821 | |
73e09c8f |
822 | #endif /* USE_ITHREADS */ |
e1c44605 |
823 | |
fcea4b7c |
824 | |
fc04eb16 |
825 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
826 | PROTOTYPES: DISABLE |
8222d950 |
827 | |
73e09c8f |
828 | #ifdef USE_ITHREADS |
829 | |
68795e93 |
830 | void |
f4cc38af |
831 | ithread_create(...) |
832 | PREINIT: |
833 | char *classname; |
514612b7 |
834 | ithread *thread; |
f4cc38af |
835 | SV *function_to_call; |
836 | AV *params; |
514612b7 |
837 | HV *specs; |
838 | IV stack_size; |
9d9ff5b1 |
839 | int context; |
69a9b4b8 |
840 | int exit_opt; |
841 | SV *thread_exit_only; |
9d9ff5b1 |
842 | char *str; |
514612b7 |
843 | int idx; |
f4cc38af |
844 | int ii; |
5c6ff896 |
845 | dMY_POOL; |
f4cc38af |
846 | CODE: |
514612b7 |
847 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
fea7688c |
848 | if (--items < 2) { |
514612b7 |
849 | Perl_croak(aTHX_ "Usage: threads->create(\\%specs, function, ...)"); |
fea7688c |
850 | } |
514612b7 |
851 | specs = (HV*)SvRV(ST(1)); |
852 | idx = 1; |
853 | } else { |
fea7688c |
854 | if (items < 2) { |
514612b7 |
855 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
fea7688c |
856 | } |
514612b7 |
857 | specs = NULL; |
858 | idx = 0; |
859 | } |
f4cc38af |
860 | |
514612b7 |
861 | if (sv_isobject(ST(0))) { |
862 | /* $thr->create() */ |
863 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
864 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
865 | MUTEX_LOCK(&thread->mutex); |
514612b7 |
866 | stack_size = thread->stack_size; |
69a9b4b8 |
867 | exit_opt = thread->state & PERL_ITHR_THREAD_EXIT_ONLY; |
8718f9a1 |
868 | MUTEX_UNLOCK(&thread->mutex); |
514612b7 |
869 | } else { |
870 | /* threads->create() */ |
871 | classname = (char *)SvPV_nolen(ST(0)); |
5c6ff896 |
872 | stack_size = MY_POOL.default_stack_size; |
69a9b4b8 |
873 | thread_exit_only = get_sv("threads::thread_exit_only", TRUE); |
874 | exit_opt = (SvTRUE(thread_exit_only)) |
875 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
514612b7 |
876 | } |
877 | |
878 | function_to_call = ST(idx+1); |
879 | |
9d9ff5b1 |
880 | context = -1; |
514612b7 |
881 | if (specs) { |
882 | /* stack_size */ |
883 | if (hv_exists(specs, "stack", 5)) { |
884 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
885 | } else if (hv_exists(specs, "stacksize", 9)) { |
886 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
887 | } else if (hv_exists(specs, "stack_size", 10)) { |
888 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
889 | } |
9d9ff5b1 |
890 | |
891 | /* context */ |
892 | if (hv_exists(specs, "context", 7)) { |
893 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
894 | switch (*str) { |
895 | case 'a': |
896 | case 'A': |
897 | context = G_ARRAY; |
898 | break; |
899 | case 's': |
900 | case 'S': |
901 | context = G_SCALAR; |
902 | break; |
903 | case 'v': |
904 | case 'V': |
905 | context = G_VOID; |
906 | break; |
907 | default: |
908 | Perl_croak(aTHX_ "Invalid context: %s", str); |
909 | } |
910 | } else if (hv_exists(specs, "array", 5)) { |
911 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
912 | context = G_ARRAY; |
913 | } |
914 | } else if (hv_exists(specs, "scalar", 6)) { |
915 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
916 | context = G_SCALAR; |
917 | } |
918 | } else if (hv_exists(specs, "void", 4)) { |
919 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
920 | context = G_VOID; |
921 | } |
922 | } |
69a9b4b8 |
923 | |
924 | /* exit => thread_only */ |
925 | if (hv_exists(specs, "exit", 4)) { |
926 | str = (char *)SvPV_nolen(*hv_fetch(specs, "exit", 4, 0)); |
927 | exit_opt = (*str == 't' || *str == 'T') |
928 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
929 | } |
9d9ff5b1 |
930 | } |
931 | if (context == -1) { |
932 | context = GIMME_V; /* Implicit context */ |
933 | } else { |
934 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
935 | } |
f4cc38af |
936 | |
937 | /* Function args */ |
938 | params = newAV(); |
939 | if (items > 2) { |
514612b7 |
940 | for (ii=2; ii < items ; ii++) { |
941 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
942 | } |
943 | } |
944 | |
945 | /* Create thread */ |
5c6ff896 |
946 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
947 | thread = S_ithread_create(aTHX_ function_to_call, |
948 | stack_size, |
949 | context, |
950 | exit_opt, |
951 | newRV_noinc((SV*)params)); |
952 | if (! thread) { |
953 | XSRETURN_UNDEF; /* Mutex already unlocked */ |
954 | } |
861d5cbe |
955 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, FALSE)); |
adc09a0e |
956 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
957 | |
958 | /* Let thread run */ |
959 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
960 | |
f4cc38af |
961 | /* XSRETURN(1); - implied */ |
962 | |
8222d950 |
963 | |
68795e93 |
964 | void |
f4cc38af |
965 | ithread_list(...) |
966 | PREINIT: |
967 | char *classname; |
fc04eb16 |
968 | ithread *thread; |
f4cc38af |
969 | int list_context; |
970 | IV count = 0; |
11db694d |
971 | int want_running = 0; |
8718f9a1 |
972 | int state; |
5c6ff896 |
973 | dMY_POOL; |
f4cc38af |
974 | PPCODE: |
975 | /* Class method only */ |
fea7688c |
976 | if (SvROK(ST(0))) { |
ead32952 |
977 | Perl_croak(aTHX_ "Usage: threads->list(...)"); |
fea7688c |
978 | } |
f4cc38af |
979 | classname = (char *)SvPV_nolen(ST(0)); |
980 | |
981 | /* Calling context */ |
982 | list_context = (GIMME_V == G_ARRAY); |
983 | |
ead32952 |
984 | /* Running or joinable parameter */ |
985 | if (items > 1) { |
986 | want_running = SvTRUE(ST(1)); |
987 | } |
988 | |
f4cc38af |
989 | /* Walk through threads list */ |
5c6ff896 |
990 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
991 | for (thread = MY_POOL.main_thread.next; |
992 | thread != &MY_POOL.main_thread; |
fc04eb16 |
993 | thread = thread->next) |
f4cc38af |
994 | { |
8718f9a1 |
995 | MUTEX_LOCK(&thread->mutex); |
996 | state = thread->state; |
997 | MUTEX_UNLOCK(&thread->mutex); |
998 | |
f4cc38af |
999 | /* Ignore detached or joined threads */ |
8718f9a1 |
1000 | if (state & PERL_ITHR_UNCALLABLE) { |
f4cc38af |
1001 | continue; |
1002 | } |
ead32952 |
1003 | |
1004 | /* Filter per parameter */ |
1005 | if (items > 1) { |
1006 | if (want_running) { |
8718f9a1 |
1007 | if (state & PERL_ITHR_FINISHED) { |
ead32952 |
1008 | continue; /* Not running */ |
1009 | } |
1010 | } else { |
8718f9a1 |
1011 | if (! (state & PERL_ITHR_FINISHED)) { |
ead32952 |
1012 | continue; /* Still running - not joinable yet */ |
1013 | } |
1014 | } |
1015 | } |
1016 | |
f4cc38af |
1017 | /* Push object on stack if list context */ |
1018 | if (list_context) { |
861d5cbe |
1019 | XPUSHs(sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
1020 | } |
1021 | count++; |
1022 | } |
5c6ff896 |
1023 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
f4cc38af |
1024 | /* If scalar context, send back count */ |
1025 | if (! list_context) { |
1026 | XSRETURN_IV(count); |
1027 | } |
678a9b6c |
1028 | |
1029 | |
1030 | void |
f4cc38af |
1031 | ithread_self(...) |
1032 | PREINIT: |
1033 | char *classname; |
fcea4b7c |
1034 | ithread *thread; |
f4cc38af |
1035 | CODE: |
1036 | /* Class method only */ |
11db694d |
1037 | if ((items != 1) || SvROK(ST(0))) { |
f4cc38af |
1038 | Perl_croak(aTHX_ "Usage: threads->self()"); |
fea7688c |
1039 | } |
f4cc38af |
1040 | classname = (char *)SvPV_nolen(ST(0)); |
1041 | |
fcea4b7c |
1042 | thread = S_ithread_get(aTHX); |
1043 | |
861d5cbe |
1044 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1045 | /* XSRETURN(1); - implied */ |
47ba8780 |
1046 | |
47ba8780 |
1047 | |
1048 | void |
f4cc38af |
1049 | ithread_tid(...) |
1050 | PREINIT: |
1051 | ithread *thread; |
1052 | CODE: |
11db694d |
1053 | PERL_UNUSED_VAR(items); |
861d5cbe |
1054 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1055 | XST_mUV(0, thread->tid); |
1056 | /* XSRETURN(1); - implied */ |
1057 | |
e1c44605 |
1058 | |
f9dff5f5 |
1059 | void |
f4cc38af |
1060 | ithread_join(...) |
1061 | PREINIT: |
fcea4b7c |
1062 | ithread *thread; |
8718f9a1 |
1063 | ithread *current_thread; |
fcea4b7c |
1064 | int join_err; |
f4cc38af |
1065 | AV *params; |
1066 | int len; |
1067 | int ii; |
fcea4b7c |
1068 | #ifdef WIN32 |
1069 | DWORD waitcode; |
1070 | #else |
8718f9a1 |
1071 | int rc_join; |
fcea4b7c |
1072 | void *retval; |
1073 | #endif |
5c6ff896 |
1074 | dMY_POOL; |
f4cc38af |
1075 | PPCODE: |
1076 | /* Object method only */ |
11db694d |
1077 | if ((items != 1) || ! sv_isobject(ST(0))) { |
f4cc38af |
1078 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
fea7688c |
1079 | } |
f4cc38af |
1080 | |
8718f9a1 |
1081 | /* Check if the thread is joinable and not ourselves */ |
861d5cbe |
1082 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1083 | current_thread = S_ithread_get(aTHX); |
1084 | |
1085 | MUTEX_LOCK(&thread->mutex); |
1086 | if ((join_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1087 | MUTEX_UNLOCK(&thread->mutex); |
1088 | Perl_croak(aTHX_ (join_err & PERL_ITHR_DETACHED) |
1089 | ? "Cannot join a detached thread" |
1090 | : "Thread already joined"); |
1091 | } else if (thread->tid == current_thread->tid) { |
1092 | MUTEX_UNLOCK(&thread->mutex); |
1093 | Perl_croak(aTHX_ "Cannot join self"); |
fcea4b7c |
1094 | } |
1095 | |
8718f9a1 |
1096 | /* Mark as joined */ |
1097 | thread->state |= PERL_ITHR_JOINED; |
1098 | MUTEX_UNLOCK(&thread->mutex); |
1099 | |
1100 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1101 | MY_POOL.joinable_threads--; |
1102 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
1103 | |
fcea4b7c |
1104 | /* Join the thread */ |
1105 | #ifdef WIN32 |
8718f9a1 |
1106 | if (WaitForSingleObject(thread->handle, INFINITE) != WAIT_OBJECT_0) { |
1107 | /* Timeout/abandonment unexpected here; check $^E */ |
1108 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1109 | }; |
fcea4b7c |
1110 | #else |
8718f9a1 |
1111 | if ((rc_join = pthread_join(thread->thr, &retval)) != 0) { |
1112 | /* In progress/deadlock/unknown unexpected here; check $! */ |
1113 | errno = rc_join; |
1114 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1115 | }; |
fcea4b7c |
1116 | #endif |
1117 | |
1118 | MUTEX_LOCK(&thread->mutex); |
fcea4b7c |
1119 | /* Get the return value from the call_sv */ |
955c272e |
1120 | /* Objects do not survive this process - FIXME */ |
fcea4b7c |
1121 | { |
1122 | AV *params_copy; |
1123 | PerlInterpreter *other_perl; |
1124 | CLONE_PARAMS clone_params; |
fcea4b7c |
1125 | |
1126 | params_copy = (AV *)SvRV(thread->params); |
1127 | other_perl = thread->interp; |
1128 | clone_params.stashes = newAV(); |
1129 | clone_params.flags = CLONEf_JOIN_IN; |
1130 | PL_ptr_table = ptr_table_new(); |
fcea4b7c |
1131 | S_ithread_set(aTHX_ thread); |
1132 | /* Ensure 'meaningful' addresses retain their meaning */ |
1133 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1134 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1135 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1136 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
1137 | S_ithread_set(aTHX_ current_thread); |
1138 | SvREFCNT_dec(clone_params.stashes); |
d4315dd6 |
1139 | SvREFCNT_inc_void(params); |
fcea4b7c |
1140 | ptr_table_free(PL_ptr_table); |
1141 | PL_ptr_table = NULL; |
1142 | } |
1143 | |
955c272e |
1144 | /* If thread didn't die, then we can free its interpreter */ |
1145 | if (! (thread->state & PERL_ITHR_DIED)) { |
1146 | S_ithread_clear(aTHX_ thread); |
1147 | } |
6158f8b3 |
1148 | S_ithread_free(aTHX_ thread); /* releases MUTEX */ |
955c272e |
1149 | |
fcea4b7c |
1150 | /* If no return values, then just return */ |
f4cc38af |
1151 | if (! params) { |
1152 | XSRETURN_UNDEF; |
1153 | } |
1154 | |
1155 | /* Put return values on stack */ |
1156 | len = (int)AvFILL(params); |
1157 | for (ii=0; ii <= len; ii++) { |
1158 | SV* param = av_shift(params); |
1159 | XPUSHs(sv_2mortal(param)); |
1160 | } |
1161 | |
1162 | /* Free return value array */ |
1163 | SvREFCNT_dec(params); |
1164 | |
1165 | |
1166 | void |
1167 | ithread_yield(...) |
1168 | CODE: |
11db694d |
1169 | PERL_UNUSED_VAR(items); |
f4cc38af |
1170 | YIELD; |
1171 | |
1172 | |
1173 | void |
1174 | ithread_detach(...) |
1175 | PREINIT: |
1176 | ithread *thread; |
fcea4b7c |
1177 | int detach_err; |
5c6ff896 |
1178 | dMY_POOL; |
f4cc38af |
1179 | CODE: |
11db694d |
1180 | PERL_UNUSED_VAR(items); |
1181 | |
fcea4b7c |
1182 | /* Detach the thread */ |
8718f9a1 |
1183 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
5c6ff896 |
1184 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1185 | MUTEX_LOCK(&thread->mutex); |
8718f9a1 |
1186 | if (! (detach_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1187 | /* Thread is detachable */ |
1188 | thread->state |= PERL_ITHR_DETACHED; |
fcea4b7c |
1189 | #ifdef WIN32 |
8718f9a1 |
1190 | /* Windows has no 'detach thread' function */ |
fcea4b7c |
1191 | #else |
8718f9a1 |
1192 | PERL_THREAD_DETACH(thread->thr); |
fcea4b7c |
1193 | #endif |
8718f9a1 |
1194 | if (thread->state & PERL_ITHR_FINISHED) { |
1195 | MY_POOL.joinable_threads--; |
1196 | } else { |
1197 | MY_POOL.running_threads--; |
1198 | MY_POOL.detached_threads++; |
1199 | } |
4dcb9e53 |
1200 | } |
adc09a0e |
1201 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
1202 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
4dcb9e53 |
1203 | |
8718f9a1 |
1204 | if (detach_err) { |
1205 | Perl_croak(aTHX_ (detach_err & PERL_ITHR_DETACHED) |
1206 | ? "Thread already detached" |
1207 | : "Cannot detach a joined thread"); |
1208 | } |
1209 | |
955c272e |
1210 | /* If thread is finished and didn't die, |
1211 | * then we can free its interpreter */ |
1212 | MUTEX_LOCK(&thread->mutex); |
1213 | if ((thread->state & PERL_ITHR_FINISHED) && |
1214 | ! (thread->state & PERL_ITHR_DIED)) |
1215 | { |
1216 | S_ithread_clear(aTHX_ thread); |
1217 | } |
6158f8b3 |
1218 | S_ithread_free(aTHX_ thread); /* releases MUTEX */ |
955c272e |
1219 | |
f4cc38af |
1220 | |
47ba8780 |
1221 | |
1222 | void |
c0003851 |
1223 | ithread_kill(...) |
1224 | PREINIT: |
1225 | ithread *thread; |
1226 | char *sig_name; |
1227 | IV signal; |
1228 | CODE: |
1229 | /* Must have safe signals */ |
fea7688c |
1230 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
4dcb9e53 |
1231 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
fea7688c |
1232 | } |
c0003851 |
1233 | |
1234 | /* Object method only */ |
11db694d |
1235 | if ((items != 2) || ! sv_isobject(ST(0))) { |
c0003851 |
1236 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
fea7688c |
1237 | } |
c0003851 |
1238 | |
c0003851 |
1239 | /* Get signal */ |
1240 | sig_name = SvPV_nolen(ST(1)); |
1241 | if (isALPHA(*sig_name)) { |
fea7688c |
1242 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') { |
c0003851 |
1243 | sig_name += 3; |
fea7688c |
1244 | } |
1245 | if ((signal = whichsig(sig_name)) < 0) { |
c0003851 |
1246 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
fea7688c |
1247 | } |
1248 | } else { |
c0003851 |
1249 | signal = SvIV(ST(1)); |
fea7688c |
1250 | } |
c0003851 |
1251 | |
1252 | /* Set the signal for the thread */ |
861d5cbe |
1253 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
4dcb9e53 |
1254 | MUTEX_LOCK(&thread->mutex); |
3ceb02cd |
1255 | if (thread->interp) { |
c0003851 |
1256 | dTHXa(thread->interp); |
1257 | PL_psig_pend[signal]++; |
1258 | PL_sig_pending = 1; |
1259 | } |
4dcb9e53 |
1260 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1261 | |
1262 | /* Return the thread to allow for method chaining */ |
1263 | ST(0) = ST(0); |
1264 | /* XSRETURN(1); - implied */ |
1265 | |
1266 | |
1267 | void |
f4cc38af |
1268 | ithread_DESTROY(...) |
1269 | CODE: |
11db694d |
1270 | PERL_UNUSED_VAR(items); |
fcea4b7c |
1271 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1272 | |
1273 | |
1274 | void |
1275 | ithread_equal(...) |
fc04eb16 |
1276 | PREINIT: |
1277 | int are_equal = 0; |
f4cc38af |
1278 | CODE: |
11db694d |
1279 | PERL_UNUSED_VAR(items); |
1280 | |
fc04eb16 |
1281 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1282 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1283 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1284 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1285 | are_equal = (thr1->tid == thr2->tid); |
1286 | } |
1287 | if (are_equal) { |
1288 | XST_mYES(0); |
f4cc38af |
1289 | } else { |
fc04eb16 |
1290 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1291 | XST_mIV(0, 0); |
1292 | } |
1293 | /* XSRETURN(1); - implied */ |
1294 | |
47ba8780 |
1295 | |
47ba8780 |
1296 | void |
f4cc38af |
1297 | ithread_object(...) |
1298 | PREINIT: |
1299 | char *classname; |
1300 | UV tid; |
fc04eb16 |
1301 | ithread *thread; |
8718f9a1 |
1302 | int state; |
9ca4d7fd |
1303 | int have_obj = 0; |
5c6ff896 |
1304 | dMY_POOL; |
f4cc38af |
1305 | CODE: |
1306 | /* Class method only */ |
fea7688c |
1307 | if (SvROK(ST(0))) { |
f4cc38af |
1308 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
fea7688c |
1309 | } |
f4cc38af |
1310 | classname = (char *)SvPV_nolen(ST(0)); |
1311 | |
1312 | if ((items < 2) || ! SvOK(ST(1))) { |
1313 | XSRETURN_UNDEF; |
1314 | } |
1315 | |
fc04eb16 |
1316 | /* threads->object($tid) */ |
f4cc38af |
1317 | tid = SvUV(ST(1)); |
1318 | |
1319 | /* Walk through threads list */ |
5c6ff896 |
1320 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1321 | for (thread = MY_POOL.main_thread.next; |
1322 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1323 | thread = thread->next) |
f4cc38af |
1324 | { |
9ca4d7fd |
1325 | /* Look for TID */ |
1326 | if (thread->tid == tid) { |
1327 | /* Ignore if detached or joined */ |
8718f9a1 |
1328 | MUTEX_LOCK(&thread->mutex); |
1329 | state = thread->state; |
1330 | MUTEX_UNLOCK(&thread->mutex); |
1331 | if (! (state & PERL_ITHR_UNCALLABLE)) { |
9ca4d7fd |
1332 | /* Put object on stack */ |
861d5cbe |
1333 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
9ca4d7fd |
1334 | have_obj = 1; |
1335 | } |
1336 | break; |
f4cc38af |
1337 | } |
f4cc38af |
1338 | } |
5c6ff896 |
1339 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1340 | |
1341 | if (! have_obj) { |
f4cc38af |
1342 | XSRETURN_UNDEF; |
1343 | } |
1344 | /* XSRETURN(1); - implied */ |
1345 | |
1346 | |
1347 | void |
1348 | ithread__handle(...); |
1349 | PREINIT: |
1350 | ithread *thread; |
1351 | CODE: |
11db694d |
1352 | PERL_UNUSED_VAR(items); |
861d5cbe |
1353 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1354 | #ifdef WIN32 |
fcea4b7c |
1355 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1356 | #else |
75ba4ae2 |
1357 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1358 | #endif |
1359 | /* XSRETURN(1); - implied */ |
68795e93 |
1360 | |
514612b7 |
1361 | |
1362 | void |
1363 | ithread_get_stack_size(...) |
1364 | PREINIT: |
1365 | IV stack_size; |
5c6ff896 |
1366 | dMY_POOL; |
514612b7 |
1367 | CODE: |
11db694d |
1368 | PERL_UNUSED_VAR(items); |
514612b7 |
1369 | if (sv_isobject(ST(0))) { |
1370 | /* $thr->get_stack_size() */ |
1371 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1372 | stack_size = thread->stack_size; |
1373 | } else { |
1374 | /* threads->get_stack_size() */ |
5c6ff896 |
1375 | stack_size = MY_POOL.default_stack_size; |
514612b7 |
1376 | } |
1377 | XST_mIV(0, stack_size); |
1378 | /* XSRETURN(1); - implied */ |
1379 | |
1380 | |
1381 | void |
1382 | ithread_set_stack_size(...) |
1383 | PREINIT: |
1384 | IV old_size; |
5c6ff896 |
1385 | dMY_POOL; |
514612b7 |
1386 | CODE: |
fea7688c |
1387 | if (items != 2) { |
514612b7 |
1388 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
fea7688c |
1389 | } |
1390 | if (sv_isobject(ST(0))) { |
514612b7 |
1391 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
fea7688c |
1392 | } |
514612b7 |
1393 | |
5c6ff896 |
1394 | old_size = MY_POOL.default_stack_size; |
1395 | MY_POOL.default_stack_size = S_good_stack_size(aTHX_ SvIV(ST(1))); |
514612b7 |
1396 | XST_mIV(0, old_size); |
1397 | /* XSRETURN(1); - implied */ |
1398 | |
ead32952 |
1399 | |
1400 | void |
1401 | ithread_is_running(...) |
1402 | PREINIT: |
1403 | ithread *thread; |
1404 | CODE: |
1405 | /* Object method only */ |
11db694d |
1406 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1407 | Perl_croak(aTHX_ "Usage: $thr->is_running()"); |
fea7688c |
1408 | } |
ead32952 |
1409 | |
1410 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
1411 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1412 | ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes; |
8718f9a1 |
1413 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1414 | /* XSRETURN(1); - implied */ |
1415 | |
1416 | |
1417 | void |
1418 | ithread_is_detached(...) |
1419 | PREINIT: |
1420 | ithread *thread; |
1421 | CODE: |
11db694d |
1422 | PERL_UNUSED_VAR(items); |
861d5cbe |
1423 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1424 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1425 | ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no; |
8718f9a1 |
1426 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1427 | /* XSRETURN(1); - implied */ |
1428 | |
1429 | |
1430 | void |
1431 | ithread_is_joinable(...) |
1432 | PREINIT: |
1433 | ithread *thread; |
1434 | CODE: |
1435 | /* Object method only */ |
11db694d |
1436 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1437 | Perl_croak(aTHX_ "Usage: $thr->is_joinable()"); |
fea7688c |
1438 | } |
ead32952 |
1439 | |
1440 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1441 | MUTEX_LOCK(&thread->mutex); |
1442 | ST(0) = ((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
1443 | ! (thread->state & PERL_ITHR_UNCALLABLE)) |
ead32952 |
1444 | ? &PL_sv_yes : &PL_sv_no; |
1445 | MUTEX_UNLOCK(&thread->mutex); |
1446 | /* XSRETURN(1); - implied */ |
1447 | |
1448 | |
1449 | void |
1450 | ithread_wantarray(...) |
1451 | PREINIT: |
1452 | ithread *thread; |
1453 | CODE: |
11db694d |
1454 | PERL_UNUSED_VAR(items); |
861d5cbe |
1455 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
ead32952 |
1456 | ST(0) = (thread->gimme & G_ARRAY) ? &PL_sv_yes : |
1457 | (thread->gimme & G_VOID) ? &PL_sv_undef |
1458 | /* G_SCALAR */ : &PL_sv_no; |
ead32952 |
1459 | /* XSRETURN(1); - implied */ |
1460 | |
69a9b4b8 |
1461 | |
1462 | void |
1463 | ithread_set_thread_exit_only(...) |
1464 | PREINIT: |
1465 | ithread *thread; |
1466 | CODE: |
fea7688c |
1467 | if (items != 2) { |
69a9b4b8 |
1468 | Perl_croak(aTHX_ "Usage: ->set_thread_exit_only(boolean)"); |
fea7688c |
1469 | } |
861d5cbe |
1470 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
69a9b4b8 |
1471 | MUTEX_LOCK(&thread->mutex); |
1472 | if (SvTRUE(ST(1))) { |
1473 | thread->state |= PERL_ITHR_THREAD_EXIT_ONLY; |
1474 | } else { |
1475 | thread->state &= ~PERL_ITHR_THREAD_EXIT_ONLY; |
1476 | } |
1477 | MUTEX_UNLOCK(&thread->mutex); |
1478 | |
955c272e |
1479 | |
1480 | void |
1481 | ithread_error(...) |
1482 | PREINIT: |
1483 | ithread *thread; |
1484 | SV *err = NULL; |
1485 | CODE: |
1486 | /* Object method only */ |
1487 | if ((items != 1) || ! sv_isobject(ST(0))) { |
1488 | Perl_croak(aTHX_ "Usage: $thr->err()"); |
1489 | } |
1490 | |
1491 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1492 | MUTEX_LOCK(&thread->mutex); |
1493 | |
1494 | /* If thread died, then clone the error into the calling thread */ |
1495 | if (thread->state & PERL_ITHR_DIED) { |
1496 | PerlInterpreter *other_perl; |
1497 | CLONE_PARAMS clone_params; |
1498 | ithread *current_thread; |
1499 | |
1500 | other_perl = thread->interp; |
1501 | clone_params.stashes = newAV(); |
1502 | clone_params.flags = CLONEf_JOIN_IN; |
1503 | PL_ptr_table = ptr_table_new(); |
1504 | current_thread = S_ithread_get(aTHX); |
1505 | S_ithread_set(aTHX_ thread); |
1506 | /* Ensure 'meaningful' addresses retain their meaning */ |
1507 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1508 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1509 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1510 | err = sv_dup(thread->err, &clone_params); |
1511 | S_ithread_set(aTHX_ current_thread); |
1512 | SvREFCNT_dec(clone_params.stashes); |
1513 | SvREFCNT_inc_void(err); |
1514 | /* If error was an object, bless it into the correct class */ |
1515 | if (thread->err_class) { |
1516 | sv_bless(err, gv_stashpv(thread->err_class, 1)); |
1517 | } |
1518 | ptr_table_free(PL_ptr_table); |
1519 | PL_ptr_table = NULL; |
1520 | } |
1521 | |
1522 | MUTEX_UNLOCK(&thread->mutex); |
1523 | |
1524 | if (! err) { |
1525 | XSRETURN_UNDEF; |
1526 | } |
1527 | |
1528 | ST(0) = sv_2mortal(err); |
1529 | /* XSRETURN(1); - implied */ |
1530 | |
1531 | |
73e09c8f |
1532 | #endif /* USE_ITHREADS */ |
1533 | |
fc04eb16 |
1534 | |
68795e93 |
1535 | BOOT: |
1536 | { |
73e09c8f |
1537 | #ifdef USE_ITHREADS |
5c6ff896 |
1538 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, |
1539 | sizeof(MY_POOL_KEY)-1, TRUE); |
1540 | my_pool_t *my_poolp = (my_pool_t*)SvPVX(newSV(sizeof(my_pool_t)-1)); |
1541 | |
fc04eb16 |
1542 | MY_CXT_INIT; |
1543 | |
5c6ff896 |
1544 | Zero(my_poolp, 1, my_pool_t); |
1545 | sv_setuv(my_pool_sv, PTR2UV(my_poolp)); |
1546 | |
fc04eb16 |
1547 | PL_perl_destruct_level = 2; |
5c6ff896 |
1548 | MUTEX_INIT(&MY_POOL.create_destruct_mutex); |
1549 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
1550 | |
1551 | PL_threadhook = &Perl_ithread_hook; |
1552 | |
5c6ff896 |
1553 | MY_POOL.tid_counter = 1; |
1554 | # ifdef THREAD_CREATE_NEEDS_STACK |
1555 | MY_POOL.default_stack_size = THREAD_CREATE_NEEDS_STACK; |
1556 | # endif |
1557 | |
c372d929 |
1558 | /* The 'main' thread is thread 0. |
1559 | * It is detached (unjoinable) and immortal. |
1560 | */ |
fc04eb16 |
1561 | |
5c6ff896 |
1562 | MUTEX_INIT(&MY_POOL.main_thread.mutex); |
fc04eb16 |
1563 | |
1564 | /* Head of the threads list */ |
5c6ff896 |
1565 | MY_POOL.main_thread.next = &MY_POOL.main_thread; |
1566 | MY_POOL.main_thread.prev = &MY_POOL.main_thread; |
fc04eb16 |
1567 | |
5c6ff896 |
1568 | MY_POOL.main_thread.count = 1; /* Immortal */ |
fc04eb16 |
1569 | |
5c6ff896 |
1570 | MY_POOL.main_thread.interp = aTHX; |
1571 | MY_POOL.main_thread.state = PERL_ITHR_DETACHED; /* Detached */ |
1572 | MY_POOL.main_thread.stack_size = MY_POOL.default_stack_size; |
fc04eb16 |
1573 | # ifdef WIN32 |
5c6ff896 |
1574 | MY_POOL.main_thread.thr = GetCurrentThreadId(); |
fc04eb16 |
1575 | # else |
5c6ff896 |
1576 | MY_POOL.main_thread.thr = pthread_self(); |
fc04eb16 |
1577 | # endif |
1578 | |
5c6ff896 |
1579 | S_ithread_set(aTHX_ &MY_POOL.main_thread); |
1580 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
73e09c8f |
1581 | #endif /* USE_ITHREADS */ |
68795e93 |
1582 | } |