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 |
dcefd27c |
15 | # define NEED_sv_2pv_flags |
0f1612a7 |
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 */ |
6ebc233e |
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 */ |
6158f8b3 |
51 | #define PERL_ITHR_THREAD_EXIT_ONLY 8 /* exit() only exits current thread */ |
6ebc233e |
52 | #define PERL_ITHR_NONVIABLE 16 /* Thread creation failed */ |
53 | #define PERL_ITHR_DIED 32 /* Thread finished by dying */ |
6158f8b3 |
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 */ |
6ebc233e |
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 */ |
b762d866 |
78 | sigset_t initial_sigmask; /* Thread wakes up with signals blocked */ |
68795e93 |
79 | } ithread; |
80 | |
fc04eb16 |
81 | |
5c6ff896 |
82 | #define MY_CXT_KEY "threads::_cxt" XS_VERSION |
628ab322 |
83 | |
84 | typedef struct { |
861d5cbe |
85 | /* Used by Perl interpreter for thread context switching */ |
86 | ithread *context; |
628ab322 |
87 | } my_cxt_t; |
88 | |
89 | START_MY_CXT |
90 | |
68795e93 |
91 | |
5c6ff896 |
92 | #define MY_POOL_KEY "threads::_pool" XS_VERSION |
68795e93 |
93 | |
5c6ff896 |
94 | typedef struct { |
95 | /* Structure for 'main' thread |
96 | * Also forms the 'base' for the doubly-linked list of threads */ |
97 | ithread main_thread; |
98 | |
99 | /* Protects the creation and destruction of threads*/ |
100 | perl_mutex create_destruct_mutex; |
101 | |
102 | UV tid_counter; |
103 | IV joinable_threads; |
104 | IV running_threads; |
105 | IV detached_threads; |
e9a908c9 |
106 | IV total_threads; |
5c6ff896 |
107 | IV default_stack_size; |
108 | IV page_size; |
109 | } my_pool_t; |
110 | |
111 | #define dMY_POOL \ |
112 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, \ |
113 | sizeof(MY_POOL_KEY)-1, TRUE); \ |
114 | my_pool_t *my_poolp = INT2PTR(my_pool_t*, SvUV(my_pool_sv)) |
115 | |
116 | #define MY_POOL (*my_poolp) |
c05ae023 |
117 | |
b762d866 |
118 | /* Block most signals for calling thread, setting the old signal mask to |
119 | * oldmask, if it is not NULL */ |
120 | STATIC int |
121 | S_block_most_signals(sigset_t *oldmask) |
122 | { |
123 | sigset_t newmask; |
124 | |
125 | sigfillset(&newmask); |
126 | /* Don't block certain "important" signals (stolen from mg.c) */ |
127 | #ifdef SIGILL |
128 | sigdelset(&newmask, SIGILL); |
129 | #endif |
130 | #ifdef SIGBUS |
131 | sigdelset(&newmask, SIGBUS); |
132 | #endif |
133 | #ifdef SIGSEGV |
134 | sigdelset(&newmask, SIGSEGV); |
135 | #endif |
136 | |
137 | #ifdef WIN32 |
138 | /* XXX: How to do this on win32? */ |
139 | return 0; |
d2aa556d |
140 | #elif defined(VMS) |
141 | /* no per-thread blocking available */ |
142 | return sigprocmask(SIG_BLOCK, &newmask, oldmask); |
b762d866 |
143 | #else |
144 | return pthread_sigmask(SIG_BLOCK, &newmask, oldmask); |
145 | #endif /* WIN32 */ |
146 | } |
147 | |
148 | /* Set the signal mask for this thread to newmask */ |
149 | STATIC int |
150 | S_set_sigmask(sigset_t *newmask) |
151 | { |
152 | #ifdef WIN32 |
153 | /* XXX: How to do this on win32? */ |
154 | return 0; |
d2aa556d |
155 | #elif defined(VMS) |
156 | return sigprocmask(SIG_SETMASK, newmask, NULL); |
b762d866 |
157 | #else |
158 | return pthread_sigmask(SIG_SETMASK, newmask, NULL); |
159 | #endif /* WIN32 */ |
160 | } |
c05ae023 |
161 | |
fc04eb16 |
162 | /* Used by Perl interpreter for thread context switching */ |
861d5cbe |
163 | STATIC void |
fc04eb16 |
164 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
165 | { |
628ab322 |
166 | dMY_CXT; |
861d5cbe |
167 | MY_CXT.context = thread; |
c05ae023 |
168 | } |
169 | |
861d5cbe |
170 | STATIC ithread * |
fc04eb16 |
171 | S_ithread_get(pTHX) |
172 | { |
628ab322 |
173 | dMY_CXT; |
861d5cbe |
174 | return (MY_CXT.context); |
c05ae023 |
175 | } |
176 | |
177 | |
fc04eb16 |
178 | /* Free any data (such as the Perl interpreter) attached to an ithread |
179 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
6ebc233e |
180 | * but the PVX is. Must be called with thread->mutex already locked. Also, |
181 | * must be called with MY_POOL.create_destruct_mutex unlocked as destruction |
182 | * of the interpreter can lead to recursive destruction calls that could |
183 | * lead to a deadlock on that mutex. |
2e676467 |
184 | */ |
861d5cbe |
185 | STATIC void |
fc04eb16 |
186 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
187 | { |
188 | PerlInterpreter *interp; |
b762d866 |
189 | sigset_t origmask; |
fc04eb16 |
190 | |
adc09a0e |
191 | assert(((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
192 | (thread->state & PERL_ITHR_UNCALLABLE)) |
adc09a0e |
193 | || |
194 | (thread->state & PERL_ITHR_NONVIABLE)); |
2e676467 |
195 | |
b762d866 |
196 | /* We temporarily set the interpreter context to the interpreter being |
197 | * destroyed. It's in no condition to handle signals while it's being |
198 | * taken apart. |
199 | */ |
200 | S_block_most_signals(&origmask); |
201 | |
2e676467 |
202 | interp = thread->interp; |
203 | if (interp) { |
fc04eb16 |
204 | dTHXa(interp); |
205 | |
206 | PERL_SET_CONTEXT(interp); |
207 | S_ithread_set(aTHX_ thread); |
f2cba68d |
208 | |
fc04eb16 |
209 | SvREFCNT_dec(thread->params); |
210 | thread->params = Nullsv; |
2e676467 |
211 | |
955c272e |
212 | if (thread->err) { |
213 | SvREFCNT_dec(thread->err); |
214 | thread->err = Nullsv; |
215 | } |
216 | |
fc04eb16 |
217 | perl_destruct(interp); |
9ca4d7fd |
218 | perl_free(interp); |
fc04eb16 |
219 | thread->interp = NULL; |
2e676467 |
220 | } |
fc04eb16 |
221 | |
2e676467 |
222 | PERL_SET_CONTEXT(aTHX); |
b762d866 |
223 | S_set_sigmask(&origmask); |
2e676467 |
224 | } |
225 | |
68795e93 |
226 | |
6158f8b3 |
227 | /* Decrement the refcount of an ithread, and if it reaches zero, free it. |
228 | * Must be called with the mutex held. |
6ebc233e |
229 | * On return, mutex is released (or destroyed). |
230 | */ |
861d5cbe |
231 | STATIC void |
6158f8b3 |
232 | S_ithread_free(pTHX_ ithread *thread) |
68795e93 |
233 | { |
385d56e4 |
234 | #ifdef WIN32 |
fc04eb16 |
235 | HANDLE handle; |
385d56e4 |
236 | #endif |
adc09a0e |
237 | dMY_POOL; |
238 | |
6158f8b3 |
239 | if (! (thread->state & PERL_ITHR_NONVIABLE)) { |
240 | assert(thread->count > 0); |
241 | if (--thread->count > 0) { |
242 | MUTEX_UNLOCK(&thread->mutex); |
243 | return; |
244 | } |
6ebc233e |
245 | assert((thread->state & PERL_ITHR_FINISHED) && |
246 | (thread->state & PERL_ITHR_UNCALLABLE)); |
fc04eb16 |
247 | } |
adc09a0e |
248 | MUTEX_UNLOCK(&thread->mutex); |
9feacc09 |
249 | |
fc04eb16 |
250 | /* Main thread (0) is immortal and should never get here */ |
251 | assert(thread->tid != 0); |
252 | |
253 | /* Remove from circular list of threads */ |
5c6ff896 |
254 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
adc09a0e |
255 | assert(thread->prev && thread->next); |
256 | thread->next->prev = thread->prev; |
257 | thread->prev->next = thread->next; |
fc04eb16 |
258 | thread->next = NULL; |
259 | thread->prev = NULL; |
5c6ff896 |
260 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
c2f2a82b |
261 | |
fc04eb16 |
262 | /* Thread is now disowned */ |
9ca4d7fd |
263 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
264 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
265 | |
266 | #ifdef WIN32 |
fc04eb16 |
267 | handle = thread->handle; |
268 | thread->handle = NULL; |
385d56e4 |
269 | #endif |
fc04eb16 |
270 | MUTEX_UNLOCK(&thread->mutex); |
271 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
272 | |
c7667023 |
273 | #ifdef WIN32 |
fea7688c |
274 | if (handle) { |
fc04eb16 |
275 | CloseHandle(handle); |
fea7688c |
276 | } |
c7667023 |
277 | #endif |
385d56e4 |
278 | |
fc04eb16 |
279 | PerlMemShared_free(thread); |
ae3fba3d |
280 | |
281 | /* total_threads >= 1 is used to veto cleanup by the main thread, |
282 | * should it happen to exit while other threads still exist. |
6ebc233e |
283 | * Decrement this as the very last thing in the thread's existence. |
284 | * Otherwise, MY_POOL and global state such as PL_op_mutex may get |
285 | * freed while we're still using it. |
ae3fba3d |
286 | */ |
287 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
288 | MY_POOL.total_threads--; |
289 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
68795e93 |
290 | } |
291 | |
fc04eb16 |
292 | |
6158f8b3 |
293 | static void |
294 | S_ithread_count_inc(pTHX_ ithread *thread) |
295 | { |
296 | MUTEX_LOCK(&thread->mutex); |
297 | thread->count++; |
298 | MUTEX_UNLOCK(&thread->mutex); |
299 | } |
300 | |
301 | |
69a9b4b8 |
302 | /* Warn if exiting with any unjoined threads */ |
861d5cbe |
303 | STATIC int |
69a9b4b8 |
304 | S_exit_warning(pTHX) |
62375a60 |
305 | { |
e9a908c9 |
306 | int veto_cleanup, warn; |
adc09a0e |
307 | dMY_POOL; |
69a9b4b8 |
308 | |
5c6ff896 |
309 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
e9a908c9 |
310 | veto_cleanup = (MY_POOL.total_threads > 0); |
311 | warn = (MY_POOL.running_threads || MY_POOL.joinable_threads); |
5c6ff896 |
312 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
60bd5ef6 |
313 | |
e9a908c9 |
314 | if (warn) { |
fc04eb16 |
315 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
316 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
317 | IVdf " running and unjoined\n\t%" |
318 | IVdf " finished and unjoined\n\t%" |
319 | IVdf " running and detached\n", |
5c6ff896 |
320 | MY_POOL.running_threads, |
321 | MY_POOL.joinable_threads, |
322 | MY_POOL.detached_threads); |
fc04eb16 |
323 | } |
62375a60 |
324 | } |
69a9b4b8 |
325 | |
fc04eb16 |
326 | return (veto_cleanup); |
62375a60 |
327 | } |
328 | |
ae3fba3d |
329 | |
6ebc233e |
330 | /* Called from perl_destruct() in each thread. If it's the main thread, |
331 | * stop it from freeing everything if there are other threads still running. |
332 | */ |
69a9b4b8 |
333 | int |
334 | Perl_ithread_hook(pTHX) |
335 | { |
5c6ff896 |
336 | dMY_POOL; |
b5c80a23 |
337 | return ((aTHX == MY_POOL.main_thread.interp) ? S_exit_warning(aTHX) : 0); |
69a9b4b8 |
338 | } |
339 | |
68795e93 |
340 | |
341 | /* MAGIC (in mg.h sense) hooks */ |
342 | |
343 | int |
344 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
345 | { |
fc04eb16 |
346 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
347 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
348 | SvIOK_on(sv); |
fc04eb16 |
349 | return (0); |
68795e93 |
350 | } |
351 | |
352 | int |
353 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
354 | { |
f2cba68d |
355 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
356 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
357 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
fc04eb16 |
358 | return (0); |
68795e93 |
359 | } |
360 | |
361 | int |
362 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
363 | { |
6158f8b3 |
364 | S_ithread_count_inc(aTHX_ (ithread *)mg->mg_ptr); |
fc04eb16 |
365 | return (0); |
68795e93 |
366 | } |
367 | |
368 | MGVTBL ithread_vtbl = { |
fc04eb16 |
369 | ithread_mg_get, /* get */ |
370 | 0, /* set */ |
371 | 0, /* len */ |
372 | 0, /* clear */ |
373 | ithread_mg_free, /* free */ |
374 | 0, /* copy */ |
375 | ithread_mg_dup /* dup */ |
68795e93 |
376 | }; |
377 | |
47ba8780 |
378 | |
514612b7 |
379 | /* Provided default, minimum and rational stack sizes */ |
861d5cbe |
380 | STATIC IV |
381 | S_good_stack_size(pTHX_ IV stack_size) |
514612b7 |
382 | { |
5c6ff896 |
383 | dMY_POOL; |
384 | |
514612b7 |
385 | /* Use default stack size if no stack size specified */ |
fea7688c |
386 | if (! stack_size) { |
5c6ff896 |
387 | return (MY_POOL.default_stack_size); |
fea7688c |
388 | } |
514612b7 |
389 | |
390 | #ifdef PTHREAD_STACK_MIN |
391 | /* Can't use less than minimum */ |
392 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
393 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
394 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
395 | } |
396 | return (PTHREAD_STACK_MIN); |
397 | } |
398 | #endif |
399 | |
400 | /* Round up to page size boundary */ |
5c6ff896 |
401 | if (MY_POOL.page_size <= 0) { |
d305c2c9 |
402 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
403 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
404 | # ifdef _SC_PAGESIZE |
5c6ff896 |
405 | MY_POOL.page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
406 | # else |
5c6ff896 |
407 | MY_POOL.page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
408 | # endif |
5c6ff896 |
409 | if ((long)MY_POOL.page_size < 0) { |
514612b7 |
410 | if (errno) { |
8583b257 |
411 | SV * const error = get_sv("@", 0); |
514612b7 |
412 | (void)SvUPGRADE(error, SVt_PV); |
413 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
414 | } else { |
415 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
416 | } |
417 | } |
d305c2c9 |
418 | #else |
419 | # ifdef HAS_GETPAGESIZE |
5c6ff896 |
420 | MY_POOL.page_size = getpagesize(); |
514612b7 |
421 | # else |
d305c2c9 |
422 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
5c6ff896 |
423 | MY_POOL.page_size = PAGESIZE; |
d305c2c9 |
424 | # else |
5c6ff896 |
425 | MY_POOL.page_size = 8192; /* A conservative default */ |
d305c2c9 |
426 | # endif |
514612b7 |
427 | # endif |
5c6ff896 |
428 | if (MY_POOL.page_size <= 0) { |
429 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)MY_POOL.page_size); |
fea7688c |
430 | } |
514612b7 |
431 | #endif |
432 | } |
5c6ff896 |
433 | stack_size = ((stack_size + (MY_POOL.page_size - 1)) / MY_POOL.page_size) * MY_POOL.page_size; |
514612b7 |
434 | |
435 | return (stack_size); |
436 | } |
437 | |
438 | |
fc04eb16 |
439 | /* Starts executing the thread. |
440 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
441 | */ |
47ba8780 |
442 | #ifdef WIN32 |
861d5cbe |
443 | STATIC THREAD_RET_TYPE |
fc04eb16 |
444 | S_ithread_run(LPVOID arg) |
47ba8780 |
445 | #else |
861d5cbe |
446 | STATIC void * |
fc04eb16 |
447 | S_ithread_run(void * arg) |
47ba8780 |
448 | #endif |
fc04eb16 |
449 | { |
450 | ithread *thread = (ithread *)arg; |
69a9b4b8 |
451 | int jmp_rc = 0; |
452 | I32 oldscope; |
955c272e |
453 | int exit_app = 0; /* Thread terminated using 'exit' */ |
69a9b4b8 |
454 | int exit_code = 0; |
955c272e |
455 | int died = 0; /* Thread terminated abnormally */ |
f2cba68d |
456 | |
69a9b4b8 |
457 | dJMPENV; |
458 | |
fc04eb16 |
459 | dTHXa(thread->interp); |
47ba8780 |
460 | |
5c6ff896 |
461 | dMY_POOL; |
462 | |
9ca4d7fd |
463 | /* Blocked until ->create() call finishes */ |
fc04eb16 |
464 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
465 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
466 | |
467 | PERL_SET_CONTEXT(thread->interp); |
468 | S_ithread_set(aTHX_ thread); |
47ba8780 |
469 | |
b762d866 |
470 | /* Thread starts with most signals blocked - restore the signal mask from |
471 | * the ithread struct. |
472 | */ |
473 | S_set_sigmask(&thread->initial_sigmask); |
474 | |
fc04eb16 |
475 | PL_perl_destruct_level = 2; |
f2cba68d |
476 | |
fc04eb16 |
477 | { |
478 | AV *params = (AV *)SvRV(thread->params); |
479 | int len = (int)av_len(params)+1; |
480 | int ii; |
481 | |
482 | dSP; |
483 | ENTER; |
484 | SAVETMPS; |
485 | |
486 | /* Put args on the stack */ |
487 | PUSHMARK(SP); |
488 | for (ii=0; ii < len; ii++) { |
489 | XPUSHs(av_shift(params)); |
490 | } |
491 | PUTBACK; |
492 | |
4dcb9e53 |
493 | oldscope = PL_scopestack_ix; |
494 | JMPENV_PUSH(jmp_rc); |
495 | if (jmp_rc == 0) { |
496 | /* Run the specified function */ |
497 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
498 | } else if (jmp_rc == 2) { |
69a9b4b8 |
499 | /* Thread exited */ |
500 | exit_app = 1; |
501 | exit_code = STATUS_CURRENT; |
4dcb9e53 |
502 | while (PL_scopestack_ix > oldscope) { |
503 | LEAVE; |
504 | } |
505 | } |
506 | JMPENV_POP; |
fc04eb16 |
507 | |
b762d866 |
508 | /* The interpreter is finished, so this thread can stop receiving |
509 | * signals. This way, our signal handler doesn't get called in the |
510 | * middle of our parent thread calling perl_destruct()... |
511 | */ |
512 | S_block_most_signals(NULL); |
513 | |
fc04eb16 |
514 | /* Remove args from stack and put back in params array */ |
515 | SPAGAIN; |
516 | for (ii=len-1; ii >= 0; ii--) { |
517 | SV *sv = POPs; |
7df0357e |
518 | if (jmp_rc == 0 && (thread->gimme & G_WANT) != G_VOID) { |
4dcb9e53 |
519 | av_store(params, ii, SvREFCNT_inc(sv)); |
520 | } |
fc04eb16 |
521 | } |
522 | |
4dcb9e53 |
523 | FREETMPS; |
524 | LEAVE; |
525 | |
955c272e |
526 | /* Check for abnormal termination */ |
527 | if (SvTRUE(ERRSV)) { |
528 | died = PERL_ITHR_DIED; |
529 | thread->err = newSVsv(ERRSV); |
530 | /* If ERRSV is an object, remember the classname and then |
531 | * rebless into 'main' so it will survive 'cloning' |
532 | */ |
533 | if (sv_isobject(thread->err)) { |
534 | thread->err_class = HvNAME(SvSTASH(SvRV(thread->err))); |
535 | sv_bless(thread->err, gv_stashpv("main", 0)); |
536 | } |
537 | |
538 | if (ckWARN_d(WARN_THREADS)) { |
539 | oldscope = PL_scopestack_ix; |
540 | JMPENV_PUSH(jmp_rc); |
541 | if (jmp_rc == 0) { |
542 | /* Warn that thread died */ |
543 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
544 | } else if (jmp_rc == 2) { |
545 | /* Warn handler exited */ |
546 | exit_app = 1; |
547 | exit_code = STATUS_CURRENT; |
548 | while (PL_scopestack_ix > oldscope) { |
549 | LEAVE; |
550 | } |
4dcb9e53 |
551 | } |
955c272e |
552 | JMPENV_POP; |
4dcb9e53 |
553 | } |
fc04eb16 |
554 | } |
555 | |
fc04eb16 |
556 | /* Release function ref */ |
557 | SvREFCNT_dec(thread->init_function); |
558 | thread->init_function = Nullsv; |
559 | } |
62375a60 |
560 | |
fc04eb16 |
561 | PerlIO_flush((PerlIO *)NULL); |
562 | |
5c6ff896 |
563 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
564 | MUTEX_LOCK(&thread->mutex); |
565 | /* Mark as finished */ |
955c272e |
566 | thread->state |= (PERL_ITHR_FINISHED | died); |
69a9b4b8 |
567 | /* Clear exit flag if required */ |
fea7688c |
568 | if (thread->state & PERL_ITHR_THREAD_EXIT_ONLY) { |
69a9b4b8 |
569 | exit_app = 0; |
fea7688c |
570 | } |
fc04eb16 |
571 | |
69a9b4b8 |
572 | /* Adjust thread status counts */ |
adc09a0e |
573 | if (thread->state & PERL_ITHR_DETACHED) { |
5c6ff896 |
574 | MY_POOL.detached_threads--; |
4dcb9e53 |
575 | } else { |
5c6ff896 |
576 | MY_POOL.running_threads--; |
577 | MY_POOL.joinable_threads++; |
5168baf3 |
578 | } |
adc09a0e |
579 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
580 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
69a9b4b8 |
581 | |
582 | /* Exit application if required */ |
583 | if (exit_app) { |
584 | oldscope = PL_scopestack_ix; |
585 | JMPENV_PUSH(jmp_rc); |
586 | if (jmp_rc == 0) { |
587 | /* Warn if there are unjoined threads */ |
588 | S_exit_warning(aTHX); |
589 | } else if (jmp_rc == 2) { |
590 | /* Warn handler exited */ |
591 | exit_code = STATUS_CURRENT; |
592 | while (PL_scopestack_ix > oldscope) { |
593 | LEAVE; |
594 | } |
595 | } |
596 | JMPENV_POP; |
597 | |
598 | my_exit(exit_code); |
599 | } |
600 | |
6ebc233e |
601 | /* At this point, the interpreter may have been freed, so call |
602 | * free in the the context of of the 'main' interpreter which |
603 | * can't have been freed due to the veto_cleanup mechanism. |
604 | */ |
46c5d8f1 |
605 | aTHX = MY_POOL.main_thread.interp; |
606 | |
6158f8b3 |
607 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
608 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
91604d21 |
609 | |
47ba8780 |
610 | #ifdef WIN32 |
fc04eb16 |
611 | return ((DWORD)0); |
e8f2bb9a |
612 | #else |
fc04eb16 |
613 | return (0); |
47ba8780 |
614 | #endif |
68795e93 |
615 | } |
616 | |
fc04eb16 |
617 | |
618 | /* Type conversion helper functions */ |
fea7688c |
619 | |
861d5cbe |
620 | STATIC SV * |
621 | S_ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
68795e93 |
622 | { |
623 | SV *sv; |
624 | MAGIC *mg; |
fc04eb16 |
625 | |
6158f8b3 |
626 | if (inc) |
627 | S_ithread_count_inc(aTHX_ thread); |
fc04eb16 |
628 | |
629 | if (! obj) { |
630 | obj = newSV(0); |
68795e93 |
631 | } |
fc04eb16 |
632 | |
633 | sv = newSVrv(obj, classname); |
634 | sv_setiv(sv, PTR2IV(thread)); |
635 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
636 | mg->mg_flags |= MGf_DUP; |
637 | SvREADONLY_on(sv); |
fc04eb16 |
638 | |
639 | return (obj); |
68795e93 |
640 | } |
47ba8780 |
641 | |
861d5cbe |
642 | STATIC ithread * |
643 | S_SV_to_ithread(pTHX_ SV *sv) |
68795e93 |
644 | { |
fc04eb16 |
645 | /* Argument is a thread */ |
646 | if (SvROK(sv)) { |
647 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
648 | } |
649 | /* Argument is classname, therefore return current thread */ |
650 | return (S_ithread_get(aTHX)); |
47ba8780 |
651 | } |
652 | |
47ba8780 |
653 | |
fc04eb16 |
654 | /* threads->create() |
655 | * Called in context of parent thread. |
5c6ff896 |
656 | * Called with MY_POOL.create_destruct_mutex locked. (Unlocked on error.) |
fc04eb16 |
657 | */ |
861d5cbe |
658 | STATIC ithread * |
fc04eb16 |
659 | S_ithread_create( |
9ca4d7fd |
660 | pTHX_ SV *init_function, |
514612b7 |
661 | IV stack_size, |
9d9ff5b1 |
662 | int gimme, |
69a9b4b8 |
663 | int exit_opt, |
fc04eb16 |
664 | SV *params) |
68795e93 |
665 | { |
fc04eb16 |
666 | ithread *thread; |
fc04eb16 |
667 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
668 | |
fc04eb16 |
669 | SV **tmps_tmp = PL_tmps_stack; |
670 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
671 | #ifndef WIN32 |
fc04eb16 |
672 | int rc_stack_size = 0; |
673 | int rc_thread_create = 0; |
d94006e8 |
674 | #endif |
adc09a0e |
675 | dMY_POOL; |
3b1c3273 |
676 | |
adc09a0e |
677 | /* Allocate thread structure in context of the main thread's interpreter */ |
5c6ff896 |
678 | { |
679 | PERL_SET_CONTEXT(MY_POOL.main_thread.interp); |
680 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
681 | } |
682 | PERL_SET_CONTEXT(aTHX); |
fc04eb16 |
683 | if (!thread) { |
5c6ff896 |
684 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
685 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
686 | my_exit(1); |
687 | } |
688 | Zero(thread, 1, ithread); |
689 | |
690 | /* Add to threads list */ |
5c6ff896 |
691 | thread->next = &MY_POOL.main_thread; |
692 | thread->prev = MY_POOL.main_thread.prev; |
693 | MY_POOL.main_thread.prev = thread; |
fc04eb16 |
694 | thread->prev->next = thread; |
e9a908c9 |
695 | MY_POOL.total_threads++; |
c05ae023 |
696 | |
6ebc233e |
697 | /* 1 ref to be held by the local var 'thread' in S_ithread_run(). |
6158f8b3 |
698 | * 1 ref to be held by the threads object that we assume we will |
6ebc233e |
699 | * be embedded in upon our return. |
700 | * 1 ref to be the responsibility of join/detach, so we don't get |
701 | * freed until join/detach, even if no thread objects remain. |
702 | * This allows the following to work: |
878090d5 |
703 | * { threads->create(sub{...}); } threads->object(1)->join; |
fc04eb16 |
704 | */ |
6158f8b3 |
705 | thread->count = 3; |
fc04eb16 |
706 | |
9ca4d7fd |
707 | /* Block new thread until ->create() call finishes */ |
fc04eb16 |
708 | MUTEX_INIT(&thread->mutex); |
9ca4d7fd |
709 | MUTEX_LOCK(&thread->mutex); |
710 | |
5c6ff896 |
711 | thread->tid = MY_POOL.tid_counter++; |
861d5cbe |
712 | thread->stack_size = S_good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
713 | thread->gimme = gimme; |
69a9b4b8 |
714 | thread->state = exit_opt; |
fc04eb16 |
715 | |
716 | /* "Clone" our interpreter into the thread's interpreter. |
717 | * This gives thread access to "static data" and code. |
718 | */ |
719 | PerlIO_flush((PerlIO *)NULL); |
720 | S_ithread_set(aTHX_ thread); |
721 | |
722 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
723 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
724 | set during the clone */ |
3b1c3273 |
725 | |
b762d866 |
726 | /* perl_clone() will leave us the new interpreter's context. This poses |
727 | * two problems for our signal handler. First, it sets the new context |
728 | * before the new interpreter struct is fully initialized, so our signal |
729 | * handler might find bogus data in the interpreter struct it gets. |
730 | * Second, even if the interpreter is initialized before a signal comes in, |
731 | * we would like to avoid that interpreter receiving notifications for |
732 | * signals (especially when they ought to be for the one running in this |
733 | * thread), until it is running in its own thread. Another problem is that |
734 | * the new thread will not have set the context until some time after it |
735 | * has started, so it won't be safe for our signal handler to run until |
736 | * that time. |
737 | * |
738 | * So we block most signals here, so the new thread will inherit the signal |
739 | * mask, and unblock them right after the thread creation. The original |
740 | * mask is saved in the thread struct so that the new thread can restore |
741 | * the original mask. |
742 | */ |
743 | S_block_most_signals(&thread->initial_sigmask); |
744 | |
47ba8780 |
745 | #ifdef WIN32 |
fc04eb16 |
746 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
747 | #else |
fc04eb16 |
748 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
749 | #endif |
47ba8780 |
750 | |
fc04eb16 |
751 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
752 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
753 | * context for the duration of our work for new interpreter. |
754 | */ |
755 | { |
894eec8b |
756 | CLONE_PARAMS clone_param; |
757 | |
fc04eb16 |
758 | dTHXa(thread->interp); |
759 | |
760 | MY_CXT_CLONE; |
761 | |
762 | /* Here we remove END blocks since they should only run in the thread |
763 | * they are created |
764 | */ |
765 | SvREFCNT_dec(PL_endav); |
766 | PL_endav = newAV(); |
404aaa48 |
767 | |
894eec8b |
768 | clone_param.flags = 0; |
f2e0bb91 |
769 | if (SvPOK(init_function)) { |
770 | thread->init_function = newSV(0); |
771 | sv_copypv(thread->init_function, init_function); |
772 | } else { |
dd5ef8e0 |
773 | thread->init_function = |
774 | SvREFCNT_inc(sv_dup(init_function, &clone_param)); |
fc04eb16 |
775 | } |
776 | |
777 | thread->params = sv_dup(params, &clone_param); |
d4315dd6 |
778 | SvREFCNT_inc_void(thread->params); |
fc04eb16 |
779 | |
780 | /* The code below checks that anything living on the tmps stack and |
781 | * has been cloned (so it lives in the ptr_table) has a refcount |
782 | * higher than 0. |
783 | * |
784 | * If the refcount is 0 it means that a something on the stack/context |
785 | * was holding a reference to it and since we init_stacks() in |
786 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
787 | * The reason it was cloned was that it lived on the @_ stack. |
788 | * |
789 | * Example of this can be found in bugreport 15837 where calls in the |
790 | * parameter list end up as a temp. |
791 | * |
792 | * One could argue that this fix should be in perl_clone. |
793 | */ |
794 | while (tmps_ix > 0) { |
795 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
796 | tmps_ix--; |
797 | if (sv && SvREFCNT(sv) == 0) { |
d4315dd6 |
798 | SvREFCNT_inc_void(sv); |
fc04eb16 |
799 | SvREFCNT_dec(sv); |
800 | } |
801 | } |
802 | |
803 | SvTEMP_off(thread->init_function); |
804 | ptr_table_free(PL_ptr_table); |
805 | PL_ptr_table = NULL; |
806 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
807 | } |
808 | S_ithread_set(aTHX_ current_thread); |
809 | PERL_SET_CONTEXT(aTHX); |
810 | |
811 | /* Create/start the thread */ |
47ba8780 |
812 | #ifdef WIN32 |
fc04eb16 |
813 | thread->handle = CreateThread(NULL, |
514612b7 |
814 | (DWORD)thread->stack_size, |
fc04eb16 |
815 | S_ithread_run, |
816 | (LPVOID)thread, |
514612b7 |
817 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
818 | &thread->thr); |
82c40bf6 |
819 | #else |
fc04eb16 |
820 | { |
861d5cbe |
821 | STATIC pthread_attr_t attr; |
822 | STATIC int attr_inited = 0; |
823 | STATIC int attr_joinable = PTHREAD_CREATE_JOINABLE; |
fc04eb16 |
824 | if (! attr_inited) { |
825 | pthread_attr_init(&attr); |
826 | attr_inited = 1; |
827 | } |
828 | |
fa26028c |
829 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
830 | /* Threads start out joinable */ |
831 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
832 | # endif |
fc04eb16 |
833 | |
514612b7 |
834 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
835 | /* Set thread's stack size */ |
514612b7 |
836 | if (thread->stack_size > 0) { |
837 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
838 | } |
3eb37d38 |
839 | # endif |
840 | |
fc04eb16 |
841 | /* Create the thread */ |
842 | if (! rc_stack_size) { |
843 | # ifdef OLD_PTHREADS_API |
844 | rc_thread_create = pthread_create(&thread->thr, |
845 | attr, |
846 | S_ithread_run, |
847 | (void *)thread); |
848 | # else |
849 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
850 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
851 | # endif |
852 | rc_thread_create = pthread_create(&thread->thr, |
853 | &attr, |
854 | S_ithread_run, |
855 | (void *)thread); |
19a077f6 |
856 | # endif |
fc04eb16 |
857 | } |
514612b7 |
858 | |
b762d866 |
859 | /* Now it's safe to accept signals, since we're in our own interpreter's |
860 | * context and we have created the thread. |
861 | */ |
862 | S_set_sigmask(&thread->initial_sigmask); |
863 | |
514612b7 |
864 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
865 | /* Try to get thread's actual stack size */ |
866 | { |
867 | size_t stacksize; |
58a3a76c |
868 | #ifdef HPUX1020 |
869 | stacksize = pthread_attr_getstacksize(attr); |
870 | #else |
871 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
872 | #endif |
873 | if (stacksize > 0) { |
514612b7 |
874 | thread->stack_size = (IV)stacksize; |
875 | } |
514612b7 |
876 | } |
877 | # endif |
fc04eb16 |
878 | } |
82c40bf6 |
879 | #endif |
bcd9ca9b |
880 | |
fc04eb16 |
881 | /* Check for errors */ |
d94006e8 |
882 | #ifdef WIN32 |
fc04eb16 |
883 | if (thread->handle == NULL) { |
d94006e8 |
884 | #else |
fc04eb16 |
885 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
886 | #endif |
9ca4d7fd |
887 | /* Must unlock mutex for destruct call */ |
5c6ff896 |
888 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
889 | sv_2mortal(params); |
adc09a0e |
890 | thread->state |= PERL_ITHR_NONVIABLE; |
6ebc233e |
891 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
d94006e8 |
892 | #ifndef WIN32 |
514612b7 |
893 | if (ckWARN_d(WARN_THREADS)) { |
fea7688c |
894 | if (rc_stack_size) { |
514612b7 |
895 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
fea7688c |
896 | } else { |
514612b7 |
897 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
fea7688c |
898 | } |
514612b7 |
899 | } |
d94006e8 |
900 | #endif |
9ca4d7fd |
901 | return (NULL); |
fc04eb16 |
902 | } |
903 | |
5c6ff896 |
904 | MY_POOL.running_threads++; |
fc04eb16 |
905 | sv_2mortal(params); |
9ca4d7fd |
906 | return (thread); |
68795e93 |
907 | } |
47ba8780 |
908 | |
73e09c8f |
909 | #endif /* USE_ITHREADS */ |
e1c44605 |
910 | |
fcea4b7c |
911 | |
fc04eb16 |
912 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
913 | PROTOTYPES: DISABLE |
8222d950 |
914 | |
73e09c8f |
915 | #ifdef USE_ITHREADS |
916 | |
68795e93 |
917 | void |
f4cc38af |
918 | ithread_create(...) |
919 | PREINIT: |
920 | char *classname; |
514612b7 |
921 | ithread *thread; |
f4cc38af |
922 | SV *function_to_call; |
923 | AV *params; |
514612b7 |
924 | HV *specs; |
925 | IV stack_size; |
9d9ff5b1 |
926 | int context; |
69a9b4b8 |
927 | int exit_opt; |
928 | SV *thread_exit_only; |
9d9ff5b1 |
929 | char *str; |
514612b7 |
930 | int idx; |
f4cc38af |
931 | int ii; |
5c6ff896 |
932 | dMY_POOL; |
f4cc38af |
933 | CODE: |
514612b7 |
934 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
fea7688c |
935 | if (--items < 2) { |
18b9e6f5 |
936 | Perl_croak(aTHX_ "Usage: threads->create(\\%%specs, function, ...)"); |
fea7688c |
937 | } |
514612b7 |
938 | specs = (HV*)SvRV(ST(1)); |
939 | idx = 1; |
940 | } else { |
fea7688c |
941 | if (items < 2) { |
514612b7 |
942 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
fea7688c |
943 | } |
514612b7 |
944 | specs = NULL; |
945 | idx = 0; |
946 | } |
f4cc38af |
947 | |
514612b7 |
948 | if (sv_isobject(ST(0))) { |
949 | /* $thr->create() */ |
950 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
951 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
952 | MUTEX_LOCK(&thread->mutex); |
514612b7 |
953 | stack_size = thread->stack_size; |
69a9b4b8 |
954 | exit_opt = thread->state & PERL_ITHR_THREAD_EXIT_ONLY; |
8718f9a1 |
955 | MUTEX_UNLOCK(&thread->mutex); |
514612b7 |
956 | } else { |
957 | /* threads->create() */ |
958 | classname = (char *)SvPV_nolen(ST(0)); |
5c6ff896 |
959 | stack_size = MY_POOL.default_stack_size; |
8583b257 |
960 | thread_exit_only = get_sv("threads::thread_exit_only", GV_ADD); |
69a9b4b8 |
961 | exit_opt = (SvTRUE(thread_exit_only)) |
962 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
514612b7 |
963 | } |
964 | |
965 | function_to_call = ST(idx+1); |
966 | |
9d9ff5b1 |
967 | context = -1; |
514612b7 |
968 | if (specs) { |
969 | /* stack_size */ |
970 | if (hv_exists(specs, "stack", 5)) { |
971 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
972 | } else if (hv_exists(specs, "stacksize", 9)) { |
973 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
974 | } else if (hv_exists(specs, "stack_size", 10)) { |
975 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
976 | } |
9d9ff5b1 |
977 | |
978 | /* context */ |
979 | if (hv_exists(specs, "context", 7)) { |
980 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
981 | switch (*str) { |
982 | case 'a': |
983 | case 'A': |
da140a40 |
984 | case 'l': |
985 | case 'L': |
9d9ff5b1 |
986 | context = G_ARRAY; |
987 | break; |
988 | case 's': |
989 | case 'S': |
990 | context = G_SCALAR; |
991 | break; |
992 | case 'v': |
993 | case 'V': |
994 | context = G_VOID; |
995 | break; |
996 | default: |
997 | Perl_croak(aTHX_ "Invalid context: %s", str); |
998 | } |
999 | } else if (hv_exists(specs, "array", 5)) { |
1000 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
1001 | context = G_ARRAY; |
1002 | } |
da140a40 |
1003 | } else if (hv_exists(specs, "list", 4)) { |
1004 | if (SvTRUE(*hv_fetch(specs, "list", 4, 0))) { |
1005 | context = G_ARRAY; |
1006 | } |
9d9ff5b1 |
1007 | } else if (hv_exists(specs, "scalar", 6)) { |
1008 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
1009 | context = G_SCALAR; |
1010 | } |
1011 | } else if (hv_exists(specs, "void", 4)) { |
1012 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
1013 | context = G_VOID; |
1014 | } |
1015 | } |
69a9b4b8 |
1016 | |
1017 | /* exit => thread_only */ |
1018 | if (hv_exists(specs, "exit", 4)) { |
1019 | str = (char *)SvPV_nolen(*hv_fetch(specs, "exit", 4, 0)); |
1020 | exit_opt = (*str == 't' || *str == 'T') |
1021 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
1022 | } |
9d9ff5b1 |
1023 | } |
1024 | if (context == -1) { |
1025 | context = GIMME_V; /* Implicit context */ |
1026 | } else { |
1027 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
1028 | } |
f4cc38af |
1029 | |
1030 | /* Function args */ |
1031 | params = newAV(); |
1032 | if (items > 2) { |
514612b7 |
1033 | for (ii=2; ii < items ; ii++) { |
1034 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
1035 | } |
1036 | } |
1037 | |
1038 | /* Create thread */ |
5c6ff896 |
1039 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1040 | thread = S_ithread_create(aTHX_ function_to_call, |
1041 | stack_size, |
1042 | context, |
1043 | exit_opt, |
1044 | newRV_noinc((SV*)params)); |
1045 | if (! thread) { |
1046 | XSRETURN_UNDEF; /* Mutex already unlocked */ |
1047 | } |
861d5cbe |
1048 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, FALSE)); |
adc09a0e |
1049 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1050 | |
1051 | /* Let thread run */ |
1052 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
1053 | |
f4cc38af |
1054 | /* XSRETURN(1); - implied */ |
1055 | |
8222d950 |
1056 | |
68795e93 |
1057 | void |
f4cc38af |
1058 | ithread_list(...) |
1059 | PREINIT: |
1060 | char *classname; |
fc04eb16 |
1061 | ithread *thread; |
f4cc38af |
1062 | int list_context; |
1063 | IV count = 0; |
11db694d |
1064 | int want_running = 0; |
8718f9a1 |
1065 | int state; |
5c6ff896 |
1066 | dMY_POOL; |
f4cc38af |
1067 | PPCODE: |
1068 | /* Class method only */ |
fea7688c |
1069 | if (SvROK(ST(0))) { |
ead32952 |
1070 | Perl_croak(aTHX_ "Usage: threads->list(...)"); |
fea7688c |
1071 | } |
f4cc38af |
1072 | classname = (char *)SvPV_nolen(ST(0)); |
1073 | |
1074 | /* Calling context */ |
1075 | list_context = (GIMME_V == G_ARRAY); |
1076 | |
ead32952 |
1077 | /* Running or joinable parameter */ |
1078 | if (items > 1) { |
1079 | want_running = SvTRUE(ST(1)); |
1080 | } |
1081 | |
f4cc38af |
1082 | /* Walk through threads list */ |
5c6ff896 |
1083 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1084 | for (thread = MY_POOL.main_thread.next; |
1085 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1086 | thread = thread->next) |
f4cc38af |
1087 | { |
8718f9a1 |
1088 | MUTEX_LOCK(&thread->mutex); |
1089 | state = thread->state; |
1090 | MUTEX_UNLOCK(&thread->mutex); |
1091 | |
f4cc38af |
1092 | /* Ignore detached or joined threads */ |
8718f9a1 |
1093 | if (state & PERL_ITHR_UNCALLABLE) { |
f4cc38af |
1094 | continue; |
1095 | } |
ead32952 |
1096 | |
1097 | /* Filter per parameter */ |
1098 | if (items > 1) { |
1099 | if (want_running) { |
8718f9a1 |
1100 | if (state & PERL_ITHR_FINISHED) { |
ead32952 |
1101 | continue; /* Not running */ |
1102 | } |
1103 | } else { |
8718f9a1 |
1104 | if (! (state & PERL_ITHR_FINISHED)) { |
ead32952 |
1105 | continue; /* Still running - not joinable yet */ |
1106 | } |
1107 | } |
1108 | } |
1109 | |
f4cc38af |
1110 | /* Push object on stack if list context */ |
1111 | if (list_context) { |
861d5cbe |
1112 | XPUSHs(sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
1113 | } |
1114 | count++; |
1115 | } |
5c6ff896 |
1116 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
f4cc38af |
1117 | /* If scalar context, send back count */ |
1118 | if (! list_context) { |
1119 | XSRETURN_IV(count); |
1120 | } |
678a9b6c |
1121 | |
1122 | |
1123 | void |
f4cc38af |
1124 | ithread_self(...) |
1125 | PREINIT: |
1126 | char *classname; |
fcea4b7c |
1127 | ithread *thread; |
f4cc38af |
1128 | CODE: |
1129 | /* Class method only */ |
11db694d |
1130 | if ((items != 1) || SvROK(ST(0))) { |
f4cc38af |
1131 | Perl_croak(aTHX_ "Usage: threads->self()"); |
fea7688c |
1132 | } |
f4cc38af |
1133 | classname = (char *)SvPV_nolen(ST(0)); |
1134 | |
fcea4b7c |
1135 | thread = S_ithread_get(aTHX); |
1136 | |
861d5cbe |
1137 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1138 | /* XSRETURN(1); - implied */ |
47ba8780 |
1139 | |
47ba8780 |
1140 | |
1141 | void |
f4cc38af |
1142 | ithread_tid(...) |
1143 | PREINIT: |
1144 | ithread *thread; |
1145 | CODE: |
11db694d |
1146 | PERL_UNUSED_VAR(items); |
861d5cbe |
1147 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1148 | XST_mUV(0, thread->tid); |
1149 | /* XSRETURN(1); - implied */ |
1150 | |
e1c44605 |
1151 | |
f9dff5f5 |
1152 | void |
f4cc38af |
1153 | ithread_join(...) |
1154 | PREINIT: |
fcea4b7c |
1155 | ithread *thread; |
8718f9a1 |
1156 | ithread *current_thread; |
fcea4b7c |
1157 | int join_err; |
6ebc233e |
1158 | AV *params = NULL; |
f4cc38af |
1159 | int len; |
1160 | int ii; |
12701bb8 |
1161 | #ifndef WIN32 |
8718f9a1 |
1162 | int rc_join; |
fcea4b7c |
1163 | void *retval; |
1164 | #endif |
5c6ff896 |
1165 | dMY_POOL; |
f4cc38af |
1166 | PPCODE: |
1167 | /* Object method only */ |
11db694d |
1168 | if ((items != 1) || ! sv_isobject(ST(0))) { |
f4cc38af |
1169 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
fea7688c |
1170 | } |
f4cc38af |
1171 | |
8718f9a1 |
1172 | /* Check if the thread is joinable and not ourselves */ |
861d5cbe |
1173 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1174 | current_thread = S_ithread_get(aTHX); |
1175 | |
1176 | MUTEX_LOCK(&thread->mutex); |
1177 | if ((join_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1178 | MUTEX_UNLOCK(&thread->mutex); |
1179 | Perl_croak(aTHX_ (join_err & PERL_ITHR_DETACHED) |
1180 | ? "Cannot join a detached thread" |
1181 | : "Thread already joined"); |
1182 | } else if (thread->tid == current_thread->tid) { |
1183 | MUTEX_UNLOCK(&thread->mutex); |
1184 | Perl_croak(aTHX_ "Cannot join self"); |
fcea4b7c |
1185 | } |
1186 | |
8718f9a1 |
1187 | /* Mark as joined */ |
1188 | thread->state |= PERL_ITHR_JOINED; |
1189 | MUTEX_UNLOCK(&thread->mutex); |
1190 | |
1191 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1192 | MY_POOL.joinable_threads--; |
1193 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
1194 | |
fcea4b7c |
1195 | /* Join the thread */ |
1196 | #ifdef WIN32 |
8718f9a1 |
1197 | if (WaitForSingleObject(thread->handle, INFINITE) != WAIT_OBJECT_0) { |
1198 | /* Timeout/abandonment unexpected here; check $^E */ |
1199 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1200 | }; |
fcea4b7c |
1201 | #else |
8718f9a1 |
1202 | if ((rc_join = pthread_join(thread->thr, &retval)) != 0) { |
1203 | /* In progress/deadlock/unknown unexpected here; check $! */ |
1204 | errno = rc_join; |
1205 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1206 | }; |
fcea4b7c |
1207 | #endif |
1208 | |
1209 | MUTEX_LOCK(&thread->mutex); |
fcea4b7c |
1210 | /* Get the return value from the call_sv */ |
955c272e |
1211 | /* Objects do not survive this process - FIXME */ |
7df0357e |
1212 | if ((thread->gimme & G_WANT) != G_VOID) { |
fcea4b7c |
1213 | AV *params_copy; |
1214 | PerlInterpreter *other_perl; |
1215 | CLONE_PARAMS clone_params; |
fcea4b7c |
1216 | |
1217 | params_copy = (AV *)SvRV(thread->params); |
1218 | other_perl = thread->interp; |
1219 | clone_params.stashes = newAV(); |
1220 | clone_params.flags = CLONEf_JOIN_IN; |
1221 | PL_ptr_table = ptr_table_new(); |
fcea4b7c |
1222 | S_ithread_set(aTHX_ thread); |
1223 | /* Ensure 'meaningful' addresses retain their meaning */ |
1224 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1225 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1226 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1227 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
1228 | S_ithread_set(aTHX_ current_thread); |
1229 | SvREFCNT_dec(clone_params.stashes); |
d4315dd6 |
1230 | SvREFCNT_inc_void(params); |
fcea4b7c |
1231 | ptr_table_free(PL_ptr_table); |
1232 | PL_ptr_table = NULL; |
1233 | } |
1234 | |
955c272e |
1235 | /* If thread didn't die, then we can free its interpreter */ |
1236 | if (! (thread->state & PERL_ITHR_DIED)) { |
1237 | S_ithread_clear(aTHX_ thread); |
1238 | } |
6ebc233e |
1239 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
955c272e |
1240 | |
fcea4b7c |
1241 | /* If no return values, then just return */ |
f4cc38af |
1242 | if (! params) { |
1243 | XSRETURN_UNDEF; |
1244 | } |
1245 | |
1246 | /* Put return values on stack */ |
1247 | len = (int)AvFILL(params); |
1248 | for (ii=0; ii <= len; ii++) { |
1249 | SV* param = av_shift(params); |
1250 | XPUSHs(sv_2mortal(param)); |
1251 | } |
1252 | |
1253 | /* Free return value array */ |
1254 | SvREFCNT_dec(params); |
1255 | |
1256 | |
1257 | void |
1258 | ithread_yield(...) |
1259 | CODE: |
11db694d |
1260 | PERL_UNUSED_VAR(items); |
f4cc38af |
1261 | YIELD; |
1262 | |
1263 | |
1264 | void |
1265 | ithread_detach(...) |
1266 | PREINIT: |
1267 | ithread *thread; |
fcea4b7c |
1268 | int detach_err; |
5c6ff896 |
1269 | dMY_POOL; |
f4cc38af |
1270 | CODE: |
11db694d |
1271 | PERL_UNUSED_VAR(items); |
1272 | |
fcea4b7c |
1273 | /* Detach the thread */ |
8718f9a1 |
1274 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
5c6ff896 |
1275 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1276 | MUTEX_LOCK(&thread->mutex); |
8718f9a1 |
1277 | if (! (detach_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1278 | /* Thread is detachable */ |
1279 | thread->state |= PERL_ITHR_DETACHED; |
fcea4b7c |
1280 | #ifdef WIN32 |
8718f9a1 |
1281 | /* Windows has no 'detach thread' function */ |
fcea4b7c |
1282 | #else |
8718f9a1 |
1283 | PERL_THREAD_DETACH(thread->thr); |
fcea4b7c |
1284 | #endif |
8718f9a1 |
1285 | if (thread->state & PERL_ITHR_FINISHED) { |
1286 | MY_POOL.joinable_threads--; |
1287 | } else { |
1288 | MY_POOL.running_threads--; |
1289 | MY_POOL.detached_threads++; |
1290 | } |
4dcb9e53 |
1291 | } |
adc09a0e |
1292 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
1293 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
4dcb9e53 |
1294 | |
8718f9a1 |
1295 | if (detach_err) { |
1296 | Perl_croak(aTHX_ (detach_err & PERL_ITHR_DETACHED) |
1297 | ? "Thread already detached" |
1298 | : "Cannot detach a joined thread"); |
1299 | } |
1300 | |
955c272e |
1301 | /* If thread is finished and didn't die, |
1302 | * then we can free its interpreter */ |
1303 | MUTEX_LOCK(&thread->mutex); |
1304 | if ((thread->state & PERL_ITHR_FINISHED) && |
1305 | ! (thread->state & PERL_ITHR_DIED)) |
1306 | { |
1307 | S_ithread_clear(aTHX_ thread); |
1308 | } |
6ebc233e |
1309 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
f4cc38af |
1310 | |
47ba8780 |
1311 | |
1312 | void |
c0003851 |
1313 | ithread_kill(...) |
1314 | PREINIT: |
1315 | ithread *thread; |
1316 | char *sig_name; |
1317 | IV signal; |
1318 | CODE: |
1319 | /* Must have safe signals */ |
fea7688c |
1320 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
4dcb9e53 |
1321 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
fea7688c |
1322 | } |
c0003851 |
1323 | |
1324 | /* Object method only */ |
11db694d |
1325 | if ((items != 2) || ! sv_isobject(ST(0))) { |
c0003851 |
1326 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
fea7688c |
1327 | } |
c0003851 |
1328 | |
c0003851 |
1329 | /* Get signal */ |
1330 | sig_name = SvPV_nolen(ST(1)); |
1331 | if (isALPHA(*sig_name)) { |
fea7688c |
1332 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') { |
c0003851 |
1333 | sig_name += 3; |
fea7688c |
1334 | } |
1335 | if ((signal = whichsig(sig_name)) < 0) { |
c0003851 |
1336 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
fea7688c |
1337 | } |
1338 | } else { |
c0003851 |
1339 | signal = SvIV(ST(1)); |
fea7688c |
1340 | } |
c0003851 |
1341 | |
1342 | /* Set the signal for the thread */ |
861d5cbe |
1343 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
4dcb9e53 |
1344 | MUTEX_LOCK(&thread->mutex); |
3ceb02cd |
1345 | if (thread->interp) { |
c0003851 |
1346 | dTHXa(thread->interp); |
1347 | PL_psig_pend[signal]++; |
1348 | PL_sig_pending = 1; |
1349 | } |
4dcb9e53 |
1350 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1351 | |
1352 | /* Return the thread to allow for method chaining */ |
1353 | ST(0) = ST(0); |
1354 | /* XSRETURN(1); - implied */ |
1355 | |
1356 | |
1357 | void |
f4cc38af |
1358 | ithread_DESTROY(...) |
1359 | CODE: |
11db694d |
1360 | PERL_UNUSED_VAR(items); |
fcea4b7c |
1361 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1362 | |
1363 | |
1364 | void |
1365 | ithread_equal(...) |
fc04eb16 |
1366 | PREINIT: |
1367 | int are_equal = 0; |
f4cc38af |
1368 | CODE: |
11db694d |
1369 | PERL_UNUSED_VAR(items); |
1370 | |
fc04eb16 |
1371 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1372 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1373 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1374 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1375 | are_equal = (thr1->tid == thr2->tid); |
1376 | } |
1377 | if (are_equal) { |
1378 | XST_mYES(0); |
f4cc38af |
1379 | } else { |
fc04eb16 |
1380 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1381 | XST_mIV(0, 0); |
1382 | } |
1383 | /* XSRETURN(1); - implied */ |
1384 | |
47ba8780 |
1385 | |
47ba8780 |
1386 | void |
f4cc38af |
1387 | ithread_object(...) |
1388 | PREINIT: |
1389 | char *classname; |
1390 | UV tid; |
fc04eb16 |
1391 | ithread *thread; |
8718f9a1 |
1392 | int state; |
9ca4d7fd |
1393 | int have_obj = 0; |
5c6ff896 |
1394 | dMY_POOL; |
f4cc38af |
1395 | CODE: |
1396 | /* Class method only */ |
fea7688c |
1397 | if (SvROK(ST(0))) { |
f4cc38af |
1398 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
fea7688c |
1399 | } |
f4cc38af |
1400 | classname = (char *)SvPV_nolen(ST(0)); |
1401 | |
1402 | if ((items < 2) || ! SvOK(ST(1))) { |
1403 | XSRETURN_UNDEF; |
1404 | } |
1405 | |
fc04eb16 |
1406 | /* threads->object($tid) */ |
f4cc38af |
1407 | tid = SvUV(ST(1)); |
1408 | |
1409 | /* Walk through threads list */ |
5c6ff896 |
1410 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1411 | for (thread = MY_POOL.main_thread.next; |
1412 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1413 | thread = thread->next) |
f4cc38af |
1414 | { |
9ca4d7fd |
1415 | /* Look for TID */ |
1416 | if (thread->tid == tid) { |
1417 | /* Ignore if detached or joined */ |
8718f9a1 |
1418 | MUTEX_LOCK(&thread->mutex); |
1419 | state = thread->state; |
1420 | MUTEX_UNLOCK(&thread->mutex); |
1421 | if (! (state & PERL_ITHR_UNCALLABLE)) { |
9ca4d7fd |
1422 | /* Put object on stack */ |
861d5cbe |
1423 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
9ca4d7fd |
1424 | have_obj = 1; |
1425 | } |
1426 | break; |
f4cc38af |
1427 | } |
f4cc38af |
1428 | } |
5c6ff896 |
1429 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1430 | |
1431 | if (! have_obj) { |
f4cc38af |
1432 | XSRETURN_UNDEF; |
1433 | } |
1434 | /* XSRETURN(1); - implied */ |
1435 | |
1436 | |
1437 | void |
1438 | ithread__handle(...); |
1439 | PREINIT: |
1440 | ithread *thread; |
1441 | CODE: |
11db694d |
1442 | PERL_UNUSED_VAR(items); |
861d5cbe |
1443 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1444 | #ifdef WIN32 |
fcea4b7c |
1445 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1446 | #else |
75ba4ae2 |
1447 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1448 | #endif |
1449 | /* XSRETURN(1); - implied */ |
68795e93 |
1450 | |
514612b7 |
1451 | |
1452 | void |
1453 | ithread_get_stack_size(...) |
1454 | PREINIT: |
1455 | IV stack_size; |
5c6ff896 |
1456 | dMY_POOL; |
514612b7 |
1457 | CODE: |
11db694d |
1458 | PERL_UNUSED_VAR(items); |
514612b7 |
1459 | if (sv_isobject(ST(0))) { |
1460 | /* $thr->get_stack_size() */ |
1461 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1462 | stack_size = thread->stack_size; |
1463 | } else { |
1464 | /* threads->get_stack_size() */ |
5c6ff896 |
1465 | stack_size = MY_POOL.default_stack_size; |
514612b7 |
1466 | } |
1467 | XST_mIV(0, stack_size); |
1468 | /* XSRETURN(1); - implied */ |
1469 | |
1470 | |
1471 | void |
1472 | ithread_set_stack_size(...) |
1473 | PREINIT: |
1474 | IV old_size; |
5c6ff896 |
1475 | dMY_POOL; |
514612b7 |
1476 | CODE: |
fea7688c |
1477 | if (items != 2) { |
514612b7 |
1478 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
fea7688c |
1479 | } |
1480 | if (sv_isobject(ST(0))) { |
514612b7 |
1481 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
fea7688c |
1482 | } |
6ebc233e |
1483 | if (! looks_like_number(ST(1))) { |
1484 | Perl_croak(aTHX_ "Stack size must be numeric"); |
1485 | } |
514612b7 |
1486 | |
5c6ff896 |
1487 | old_size = MY_POOL.default_stack_size; |
1488 | MY_POOL.default_stack_size = S_good_stack_size(aTHX_ SvIV(ST(1))); |
514612b7 |
1489 | XST_mIV(0, old_size); |
1490 | /* XSRETURN(1); - implied */ |
1491 | |
ead32952 |
1492 | |
1493 | void |
1494 | ithread_is_running(...) |
1495 | PREINIT: |
1496 | ithread *thread; |
1497 | CODE: |
1498 | /* Object method only */ |
11db694d |
1499 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1500 | Perl_croak(aTHX_ "Usage: $thr->is_running()"); |
fea7688c |
1501 | } |
ead32952 |
1502 | |
1503 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
1504 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1505 | ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes; |
8718f9a1 |
1506 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1507 | /* XSRETURN(1); - implied */ |
1508 | |
1509 | |
1510 | void |
1511 | ithread_is_detached(...) |
1512 | PREINIT: |
1513 | ithread *thread; |
1514 | CODE: |
11db694d |
1515 | PERL_UNUSED_VAR(items); |
861d5cbe |
1516 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1517 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1518 | ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no; |
8718f9a1 |
1519 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1520 | /* XSRETURN(1); - implied */ |
1521 | |
1522 | |
1523 | void |
1524 | ithread_is_joinable(...) |
1525 | PREINIT: |
1526 | ithread *thread; |
1527 | CODE: |
1528 | /* Object method only */ |
11db694d |
1529 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1530 | Perl_croak(aTHX_ "Usage: $thr->is_joinable()"); |
fea7688c |
1531 | } |
ead32952 |
1532 | |
1533 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1534 | MUTEX_LOCK(&thread->mutex); |
1535 | ST(0) = ((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
1536 | ! (thread->state & PERL_ITHR_UNCALLABLE)) |
ead32952 |
1537 | ? &PL_sv_yes : &PL_sv_no; |
1538 | MUTEX_UNLOCK(&thread->mutex); |
1539 | /* XSRETURN(1); - implied */ |
1540 | |
1541 | |
1542 | void |
1543 | ithread_wantarray(...) |
1544 | PREINIT: |
1545 | ithread *thread; |
1546 | CODE: |
11db694d |
1547 | PERL_UNUSED_VAR(items); |
861d5cbe |
1548 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
7df0357e |
1549 | ST(0) = ((thread->gimme & G_WANT) == G_ARRAY) ? &PL_sv_yes : |
1550 | ((thread->gimme & G_WANT) == G_VOID) ? &PL_sv_undef |
7ef93cb2 |
1551 | /* G_SCALAR */ : &PL_sv_no; |
ead32952 |
1552 | /* XSRETURN(1); - implied */ |
1553 | |
69a9b4b8 |
1554 | |
1555 | void |
1556 | ithread_set_thread_exit_only(...) |
1557 | PREINIT: |
1558 | ithread *thread; |
1559 | CODE: |
fea7688c |
1560 | if (items != 2) { |
69a9b4b8 |
1561 | Perl_croak(aTHX_ "Usage: ->set_thread_exit_only(boolean)"); |
fea7688c |
1562 | } |
861d5cbe |
1563 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
69a9b4b8 |
1564 | MUTEX_LOCK(&thread->mutex); |
1565 | if (SvTRUE(ST(1))) { |
1566 | thread->state |= PERL_ITHR_THREAD_EXIT_ONLY; |
1567 | } else { |
1568 | thread->state &= ~PERL_ITHR_THREAD_EXIT_ONLY; |
1569 | } |
1570 | MUTEX_UNLOCK(&thread->mutex); |
1571 | |
955c272e |
1572 | |
1573 | void |
1574 | ithread_error(...) |
1575 | PREINIT: |
1576 | ithread *thread; |
1577 | SV *err = NULL; |
1578 | CODE: |
1579 | /* Object method only */ |
1580 | if ((items != 1) || ! sv_isobject(ST(0))) { |
1581 | Perl_croak(aTHX_ "Usage: $thr->err()"); |
1582 | } |
1583 | |
1584 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1585 | MUTEX_LOCK(&thread->mutex); |
1586 | |
1587 | /* If thread died, then clone the error into the calling thread */ |
1588 | if (thread->state & PERL_ITHR_DIED) { |
1589 | PerlInterpreter *other_perl; |
1590 | CLONE_PARAMS clone_params; |
1591 | ithread *current_thread; |
1592 | |
1593 | other_perl = thread->interp; |
1594 | clone_params.stashes = newAV(); |
1595 | clone_params.flags = CLONEf_JOIN_IN; |
1596 | PL_ptr_table = ptr_table_new(); |
1597 | current_thread = S_ithread_get(aTHX); |
1598 | S_ithread_set(aTHX_ thread); |
1599 | /* Ensure 'meaningful' addresses retain their meaning */ |
1600 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1601 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1602 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1603 | err = sv_dup(thread->err, &clone_params); |
1604 | S_ithread_set(aTHX_ current_thread); |
1605 | SvREFCNT_dec(clone_params.stashes); |
1606 | SvREFCNT_inc_void(err); |
1607 | /* If error was an object, bless it into the correct class */ |
1608 | if (thread->err_class) { |
1609 | sv_bless(err, gv_stashpv(thread->err_class, 1)); |
1610 | } |
1611 | ptr_table_free(PL_ptr_table); |
1612 | PL_ptr_table = NULL; |
1613 | } |
1614 | |
1615 | MUTEX_UNLOCK(&thread->mutex); |
1616 | |
1617 | if (! err) { |
1618 | XSRETURN_UNDEF; |
1619 | } |
1620 | |
1621 | ST(0) = sv_2mortal(err); |
1622 | /* XSRETURN(1); - implied */ |
1623 | |
1624 | |
73e09c8f |
1625 | #endif /* USE_ITHREADS */ |
1626 | |
fc04eb16 |
1627 | |
68795e93 |
1628 | BOOT: |
1629 | { |
73e09c8f |
1630 | #ifdef USE_ITHREADS |
5c6ff896 |
1631 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, |
1632 | sizeof(MY_POOL_KEY)-1, TRUE); |
1633 | my_pool_t *my_poolp = (my_pool_t*)SvPVX(newSV(sizeof(my_pool_t)-1)); |
1634 | |
fc04eb16 |
1635 | MY_CXT_INIT; |
1636 | |
5c6ff896 |
1637 | Zero(my_poolp, 1, my_pool_t); |
1638 | sv_setuv(my_pool_sv, PTR2UV(my_poolp)); |
1639 | |
fc04eb16 |
1640 | PL_perl_destruct_level = 2; |
5c6ff896 |
1641 | MUTEX_INIT(&MY_POOL.create_destruct_mutex); |
1642 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
1643 | |
1644 | PL_threadhook = &Perl_ithread_hook; |
1645 | |
5c6ff896 |
1646 | MY_POOL.tid_counter = 1; |
1647 | # ifdef THREAD_CREATE_NEEDS_STACK |
1648 | MY_POOL.default_stack_size = THREAD_CREATE_NEEDS_STACK; |
1649 | # endif |
1650 | |
c372d929 |
1651 | /* The 'main' thread is thread 0. |
1652 | * It is detached (unjoinable) and immortal. |
1653 | */ |
fc04eb16 |
1654 | |
5c6ff896 |
1655 | MUTEX_INIT(&MY_POOL.main_thread.mutex); |
fc04eb16 |
1656 | |
1657 | /* Head of the threads list */ |
5c6ff896 |
1658 | MY_POOL.main_thread.next = &MY_POOL.main_thread; |
1659 | MY_POOL.main_thread.prev = &MY_POOL.main_thread; |
fc04eb16 |
1660 | |
5c6ff896 |
1661 | MY_POOL.main_thread.count = 1; /* Immortal */ |
fc04eb16 |
1662 | |
5c6ff896 |
1663 | MY_POOL.main_thread.interp = aTHX; |
1664 | MY_POOL.main_thread.state = PERL_ITHR_DETACHED; /* Detached */ |
1665 | MY_POOL.main_thread.stack_size = MY_POOL.default_stack_size; |
fc04eb16 |
1666 | # ifdef WIN32 |
5c6ff896 |
1667 | MY_POOL.main_thread.thr = GetCurrentThreadId(); |
fc04eb16 |
1668 | # else |
5c6ff896 |
1669 | MY_POOL.main_thread.thr = pthread_self(); |
fc04eb16 |
1670 | # endif |
1671 | |
5c6ff896 |
1672 | S_ithread_set(aTHX_ &MY_POOL.main_thread); |
1673 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
73e09c8f |
1674 | #endif /* USE_ITHREADS */ |
68795e93 |
1675 | } |