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 */ |
8264cf32 |
78 | #ifndef WIN32 |
b762d866 |
79 | sigset_t initial_sigmask; /* Thread wakes up with signals blocked */ |
8264cf32 |
80 | #endif |
68795e93 |
81 | } ithread; |
82 | |
fc04eb16 |
83 | |
5c6ff896 |
84 | #define MY_CXT_KEY "threads::_cxt" XS_VERSION |
628ab322 |
85 | |
86 | typedef struct { |
861d5cbe |
87 | /* Used by Perl interpreter for thread context switching */ |
88 | ithread *context; |
628ab322 |
89 | } my_cxt_t; |
90 | |
91 | START_MY_CXT |
92 | |
68795e93 |
93 | |
5c6ff896 |
94 | #define MY_POOL_KEY "threads::_pool" XS_VERSION |
68795e93 |
95 | |
5c6ff896 |
96 | typedef struct { |
97 | /* Structure for 'main' thread |
98 | * Also forms the 'base' for the doubly-linked list of threads */ |
99 | ithread main_thread; |
100 | |
101 | /* Protects the creation and destruction of threads*/ |
102 | perl_mutex create_destruct_mutex; |
103 | |
104 | UV tid_counter; |
105 | IV joinable_threads; |
106 | IV running_threads; |
107 | IV detached_threads; |
e9a908c9 |
108 | IV total_threads; |
5c6ff896 |
109 | IV default_stack_size; |
110 | IV page_size; |
111 | } my_pool_t; |
112 | |
113 | #define dMY_POOL \ |
114 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, \ |
115 | sizeof(MY_POOL_KEY)-1, TRUE); \ |
116 | my_pool_t *my_poolp = INT2PTR(my_pool_t*, SvUV(my_pool_sv)) |
117 | |
118 | #define MY_POOL (*my_poolp) |
c05ae023 |
119 | |
8264cf32 |
120 | #ifndef WIN32 |
b762d866 |
121 | /* Block most signals for calling thread, setting the old signal mask to |
122 | * oldmask, if it is not NULL */ |
123 | STATIC int |
124 | S_block_most_signals(sigset_t *oldmask) |
125 | { |
126 | sigset_t newmask; |
127 | |
128 | sigfillset(&newmask); |
129 | /* Don't block certain "important" signals (stolen from mg.c) */ |
130 | #ifdef SIGILL |
131 | sigdelset(&newmask, SIGILL); |
132 | #endif |
133 | #ifdef SIGBUS |
134 | sigdelset(&newmask, SIGBUS); |
135 | #endif |
136 | #ifdef SIGSEGV |
137 | sigdelset(&newmask, SIGSEGV); |
138 | #endif |
139 | |
8264cf32 |
140 | #if defined(VMS) |
d2aa556d |
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 | { |
8264cf32 |
152 | #if defined(VMS) |
d2aa556d |
153 | return sigprocmask(SIG_SETMASK, newmask, NULL); |
b762d866 |
154 | #else |
155 | return pthread_sigmask(SIG_SETMASK, newmask, NULL); |
156 | #endif /* WIN32 */ |
157 | } |
8264cf32 |
158 | #endif |
c05ae023 |
159 | |
fc04eb16 |
160 | /* Used by Perl interpreter for thread context switching */ |
861d5cbe |
161 | STATIC void |
fc04eb16 |
162 | S_ithread_set(pTHX_ ithread *thread) |
c05ae023 |
163 | { |
628ab322 |
164 | dMY_CXT; |
861d5cbe |
165 | MY_CXT.context = thread; |
c05ae023 |
166 | } |
167 | |
861d5cbe |
168 | STATIC ithread * |
fc04eb16 |
169 | S_ithread_get(pTHX) |
170 | { |
628ab322 |
171 | dMY_CXT; |
861d5cbe |
172 | return (MY_CXT.context); |
c05ae023 |
173 | } |
174 | |
175 | |
fc04eb16 |
176 | /* Free any data (such as the Perl interpreter) attached to an ithread |
177 | * structure. This is a bit like undef on SVs, where the SV isn't freed, |
6ebc233e |
178 | * but the PVX is. Must be called with thread->mutex already locked. Also, |
179 | * must be called with MY_POOL.create_destruct_mutex unlocked as destruction |
180 | * of the interpreter can lead to recursive destruction calls that could |
181 | * lead to a deadlock on that mutex. |
2e676467 |
182 | */ |
861d5cbe |
183 | STATIC void |
fc04eb16 |
184 | S_ithread_clear(pTHX_ ithread *thread) |
2e676467 |
185 | { |
186 | PerlInterpreter *interp; |
b762d866 |
187 | sigset_t origmask; |
fc04eb16 |
188 | |
adc09a0e |
189 | assert(((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
190 | (thread->state & PERL_ITHR_UNCALLABLE)) |
adc09a0e |
191 | || |
192 | (thread->state & PERL_ITHR_NONVIABLE)); |
2e676467 |
193 | |
8264cf32 |
194 | #ifndef WIN32 |
b762d866 |
195 | /* We temporarily set the interpreter context to the interpreter being |
196 | * destroyed. It's in no condition to handle signals while it's being |
197 | * taken apart. |
198 | */ |
199 | S_block_most_signals(&origmask); |
8264cf32 |
200 | #endif |
b762d866 |
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); |
8264cf32 |
223 | #ifndef WIN32 |
b762d866 |
224 | S_set_sigmask(&origmask); |
8264cf32 |
225 | #endif |
2e676467 |
226 | } |
227 | |
68795e93 |
228 | |
6158f8b3 |
229 | /* Decrement the refcount of an ithread, and if it reaches zero, free it. |
230 | * Must be called with the mutex held. |
6ebc233e |
231 | * On return, mutex is released (or destroyed). |
232 | */ |
861d5cbe |
233 | STATIC void |
6158f8b3 |
234 | S_ithread_free(pTHX_ ithread *thread) |
68795e93 |
235 | { |
385d56e4 |
236 | #ifdef WIN32 |
fc04eb16 |
237 | HANDLE handle; |
385d56e4 |
238 | #endif |
adc09a0e |
239 | dMY_POOL; |
240 | |
6158f8b3 |
241 | if (! (thread->state & PERL_ITHR_NONVIABLE)) { |
242 | assert(thread->count > 0); |
243 | if (--thread->count > 0) { |
244 | MUTEX_UNLOCK(&thread->mutex); |
245 | return; |
246 | } |
6ebc233e |
247 | assert((thread->state & PERL_ITHR_FINISHED) && |
248 | (thread->state & PERL_ITHR_UNCALLABLE)); |
fc04eb16 |
249 | } |
adc09a0e |
250 | MUTEX_UNLOCK(&thread->mutex); |
9feacc09 |
251 | |
fc04eb16 |
252 | /* Main thread (0) is immortal and should never get here */ |
253 | assert(thread->tid != 0); |
254 | |
255 | /* Remove from circular list of threads */ |
5c6ff896 |
256 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
adc09a0e |
257 | assert(thread->prev && thread->next); |
258 | thread->next->prev = thread->prev; |
259 | thread->prev->next = thread->next; |
fc04eb16 |
260 | thread->next = NULL; |
261 | thread->prev = NULL; |
5c6ff896 |
262 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
c2f2a82b |
263 | |
fc04eb16 |
264 | /* Thread is now disowned */ |
9ca4d7fd |
265 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
266 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
267 | |
268 | #ifdef WIN32 |
fc04eb16 |
269 | handle = thread->handle; |
270 | thread->handle = NULL; |
385d56e4 |
271 | #endif |
fc04eb16 |
272 | MUTEX_UNLOCK(&thread->mutex); |
273 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
274 | |
c7667023 |
275 | #ifdef WIN32 |
fea7688c |
276 | if (handle) { |
fc04eb16 |
277 | CloseHandle(handle); |
fea7688c |
278 | } |
c7667023 |
279 | #endif |
385d56e4 |
280 | |
fc04eb16 |
281 | PerlMemShared_free(thread); |
ae3fba3d |
282 | |
283 | /* total_threads >= 1 is used to veto cleanup by the main thread, |
284 | * should it happen to exit while other threads still exist. |
6ebc233e |
285 | * Decrement this as the very last thing in the thread's existence. |
286 | * Otherwise, MY_POOL and global state such as PL_op_mutex may get |
287 | * freed while we're still using it. |
ae3fba3d |
288 | */ |
289 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
290 | MY_POOL.total_threads--; |
291 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
68795e93 |
292 | } |
293 | |
fc04eb16 |
294 | |
6158f8b3 |
295 | static void |
296 | S_ithread_count_inc(pTHX_ ithread *thread) |
297 | { |
298 | MUTEX_LOCK(&thread->mutex); |
299 | thread->count++; |
300 | MUTEX_UNLOCK(&thread->mutex); |
301 | } |
302 | |
303 | |
69a9b4b8 |
304 | /* Warn if exiting with any unjoined threads */ |
861d5cbe |
305 | STATIC int |
69a9b4b8 |
306 | S_exit_warning(pTHX) |
62375a60 |
307 | { |
e9a908c9 |
308 | int veto_cleanup, warn; |
adc09a0e |
309 | dMY_POOL; |
69a9b4b8 |
310 | |
5c6ff896 |
311 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
e9a908c9 |
312 | veto_cleanup = (MY_POOL.total_threads > 0); |
313 | warn = (MY_POOL.running_threads || MY_POOL.joinable_threads); |
5c6ff896 |
314 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
60bd5ef6 |
315 | |
e9a908c9 |
316 | if (warn) { |
fc04eb16 |
317 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
318 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
319 | IVdf " running and unjoined\n\t%" |
320 | IVdf " finished and unjoined\n\t%" |
321 | IVdf " running and detached\n", |
5c6ff896 |
322 | MY_POOL.running_threads, |
323 | MY_POOL.joinable_threads, |
324 | MY_POOL.detached_threads); |
fc04eb16 |
325 | } |
62375a60 |
326 | } |
69a9b4b8 |
327 | |
fc04eb16 |
328 | return (veto_cleanup); |
62375a60 |
329 | } |
330 | |
ae3fba3d |
331 | |
6ebc233e |
332 | /* Called from perl_destruct() in each thread. If it's the main thread, |
333 | * stop it from freeing everything if there are other threads still running. |
334 | */ |
69a9b4b8 |
335 | int |
336 | Perl_ithread_hook(pTHX) |
337 | { |
5c6ff896 |
338 | dMY_POOL; |
b5c80a23 |
339 | return ((aTHX == MY_POOL.main_thread.interp) ? S_exit_warning(aTHX) : 0); |
69a9b4b8 |
340 | } |
341 | |
68795e93 |
342 | |
343 | /* MAGIC (in mg.h sense) hooks */ |
344 | |
345 | int |
346 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
347 | { |
fc04eb16 |
348 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
349 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
350 | SvIOK_on(sv); |
fc04eb16 |
351 | return (0); |
68795e93 |
352 | } |
353 | |
354 | int |
355 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
356 | { |
f2cba68d |
357 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
358 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
359 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
fc04eb16 |
360 | return (0); |
68795e93 |
361 | } |
362 | |
363 | int |
364 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
365 | { |
6158f8b3 |
366 | S_ithread_count_inc(aTHX_ (ithread *)mg->mg_ptr); |
fc04eb16 |
367 | return (0); |
68795e93 |
368 | } |
369 | |
370 | MGVTBL ithread_vtbl = { |
fc04eb16 |
371 | ithread_mg_get, /* get */ |
372 | 0, /* set */ |
373 | 0, /* len */ |
374 | 0, /* clear */ |
375 | ithread_mg_free, /* free */ |
376 | 0, /* copy */ |
377 | ithread_mg_dup /* dup */ |
68795e93 |
378 | }; |
379 | |
47ba8780 |
380 | |
514612b7 |
381 | /* Provided default, minimum and rational stack sizes */ |
861d5cbe |
382 | STATIC IV |
383 | S_good_stack_size(pTHX_ IV stack_size) |
514612b7 |
384 | { |
5c6ff896 |
385 | dMY_POOL; |
386 | |
514612b7 |
387 | /* Use default stack size if no stack size specified */ |
fea7688c |
388 | if (! stack_size) { |
5c6ff896 |
389 | return (MY_POOL.default_stack_size); |
fea7688c |
390 | } |
514612b7 |
391 | |
392 | #ifdef PTHREAD_STACK_MIN |
393 | /* Can't use less than minimum */ |
394 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
395 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
396 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
397 | } |
398 | return (PTHREAD_STACK_MIN); |
399 | } |
400 | #endif |
401 | |
402 | /* Round up to page size boundary */ |
5c6ff896 |
403 | if (MY_POOL.page_size <= 0) { |
d305c2c9 |
404 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
405 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
406 | # ifdef _SC_PAGESIZE |
5c6ff896 |
407 | MY_POOL.page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
408 | # else |
5c6ff896 |
409 | MY_POOL.page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
410 | # endif |
5c6ff896 |
411 | if ((long)MY_POOL.page_size < 0) { |
514612b7 |
412 | if (errno) { |
8583b257 |
413 | SV * const error = get_sv("@", 0); |
514612b7 |
414 | (void)SvUPGRADE(error, SVt_PV); |
415 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
416 | } else { |
417 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
418 | } |
419 | } |
d305c2c9 |
420 | #else |
421 | # ifdef HAS_GETPAGESIZE |
5c6ff896 |
422 | MY_POOL.page_size = getpagesize(); |
514612b7 |
423 | # else |
d305c2c9 |
424 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
5c6ff896 |
425 | MY_POOL.page_size = PAGESIZE; |
d305c2c9 |
426 | # else |
5c6ff896 |
427 | MY_POOL.page_size = 8192; /* A conservative default */ |
d305c2c9 |
428 | # endif |
514612b7 |
429 | # endif |
5c6ff896 |
430 | if (MY_POOL.page_size <= 0) { |
431 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)MY_POOL.page_size); |
fea7688c |
432 | } |
514612b7 |
433 | #endif |
434 | } |
5c6ff896 |
435 | stack_size = ((stack_size + (MY_POOL.page_size - 1)) / MY_POOL.page_size) * MY_POOL.page_size; |
514612b7 |
436 | |
437 | return (stack_size); |
438 | } |
439 | |
440 | |
fc04eb16 |
441 | /* Starts executing the thread. |
442 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
443 | */ |
47ba8780 |
444 | #ifdef WIN32 |
861d5cbe |
445 | STATIC THREAD_RET_TYPE |
fc04eb16 |
446 | S_ithread_run(LPVOID arg) |
47ba8780 |
447 | #else |
861d5cbe |
448 | STATIC void * |
fc04eb16 |
449 | S_ithread_run(void * arg) |
47ba8780 |
450 | #endif |
fc04eb16 |
451 | { |
452 | ithread *thread = (ithread *)arg; |
69a9b4b8 |
453 | int jmp_rc = 0; |
454 | I32 oldscope; |
955c272e |
455 | int exit_app = 0; /* Thread terminated using 'exit' */ |
69a9b4b8 |
456 | int exit_code = 0; |
955c272e |
457 | int died = 0; /* Thread terminated abnormally */ |
f2cba68d |
458 | |
69a9b4b8 |
459 | dJMPENV; |
460 | |
fc04eb16 |
461 | dTHXa(thread->interp); |
47ba8780 |
462 | |
5c6ff896 |
463 | dMY_POOL; |
464 | |
9ca4d7fd |
465 | /* Blocked until ->create() call finishes */ |
fc04eb16 |
466 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
467 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
468 | |
469 | PERL_SET_CONTEXT(thread->interp); |
470 | S_ithread_set(aTHX_ thread); |
47ba8780 |
471 | |
8264cf32 |
472 | #ifndef WIN32 |
b762d866 |
473 | /* Thread starts with most signals blocked - restore the signal mask from |
474 | * the ithread struct. |
475 | */ |
476 | S_set_sigmask(&thread->initial_sigmask); |
8264cf32 |
477 | #endif |
b762d866 |
478 | |
fc04eb16 |
479 | PL_perl_destruct_level = 2; |
f2cba68d |
480 | |
fc04eb16 |
481 | { |
482 | AV *params = (AV *)SvRV(thread->params); |
483 | int len = (int)av_len(params)+1; |
484 | int ii; |
485 | |
486 | dSP; |
487 | ENTER; |
488 | SAVETMPS; |
489 | |
490 | /* Put args on the stack */ |
491 | PUSHMARK(SP); |
492 | for (ii=0; ii < len; ii++) { |
493 | XPUSHs(av_shift(params)); |
494 | } |
495 | PUTBACK; |
496 | |
4dcb9e53 |
497 | oldscope = PL_scopestack_ix; |
498 | JMPENV_PUSH(jmp_rc); |
499 | if (jmp_rc == 0) { |
500 | /* Run the specified function */ |
501 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
502 | } else if (jmp_rc == 2) { |
69a9b4b8 |
503 | /* Thread exited */ |
504 | exit_app = 1; |
505 | exit_code = STATUS_CURRENT; |
4dcb9e53 |
506 | while (PL_scopestack_ix > oldscope) { |
507 | LEAVE; |
508 | } |
509 | } |
510 | JMPENV_POP; |
fc04eb16 |
511 | |
8264cf32 |
512 | #ifndef WIN32 |
b762d866 |
513 | /* The interpreter is finished, so this thread can stop receiving |
514 | * signals. This way, our signal handler doesn't get called in the |
515 | * middle of our parent thread calling perl_destruct()... |
516 | */ |
517 | S_block_most_signals(NULL); |
8264cf32 |
518 | #endif |
b762d866 |
519 | |
fc04eb16 |
520 | /* Remove args from stack and put back in params array */ |
521 | SPAGAIN; |
522 | for (ii=len-1; ii >= 0; ii--) { |
523 | SV *sv = POPs; |
7df0357e |
524 | if (jmp_rc == 0 && (thread->gimme & G_WANT) != G_VOID) { |
4dcb9e53 |
525 | av_store(params, ii, SvREFCNT_inc(sv)); |
526 | } |
fc04eb16 |
527 | } |
528 | |
4dcb9e53 |
529 | FREETMPS; |
530 | LEAVE; |
531 | |
955c272e |
532 | /* Check for abnormal termination */ |
533 | if (SvTRUE(ERRSV)) { |
534 | died = PERL_ITHR_DIED; |
535 | thread->err = newSVsv(ERRSV); |
536 | /* If ERRSV is an object, remember the classname and then |
537 | * rebless into 'main' so it will survive 'cloning' |
538 | */ |
539 | if (sv_isobject(thread->err)) { |
540 | thread->err_class = HvNAME(SvSTASH(SvRV(thread->err))); |
541 | sv_bless(thread->err, gv_stashpv("main", 0)); |
542 | } |
543 | |
544 | if (ckWARN_d(WARN_THREADS)) { |
545 | oldscope = PL_scopestack_ix; |
546 | JMPENV_PUSH(jmp_rc); |
547 | if (jmp_rc == 0) { |
548 | /* Warn that thread died */ |
549 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
550 | } else if (jmp_rc == 2) { |
551 | /* Warn handler exited */ |
552 | exit_app = 1; |
553 | exit_code = STATUS_CURRENT; |
554 | while (PL_scopestack_ix > oldscope) { |
555 | LEAVE; |
556 | } |
4dcb9e53 |
557 | } |
955c272e |
558 | JMPENV_POP; |
4dcb9e53 |
559 | } |
fc04eb16 |
560 | } |
561 | |
fc04eb16 |
562 | /* Release function ref */ |
563 | SvREFCNT_dec(thread->init_function); |
564 | thread->init_function = Nullsv; |
565 | } |
62375a60 |
566 | |
fc04eb16 |
567 | PerlIO_flush((PerlIO *)NULL); |
568 | |
5c6ff896 |
569 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
570 | MUTEX_LOCK(&thread->mutex); |
571 | /* Mark as finished */ |
955c272e |
572 | thread->state |= (PERL_ITHR_FINISHED | died); |
69a9b4b8 |
573 | /* Clear exit flag if required */ |
fea7688c |
574 | if (thread->state & PERL_ITHR_THREAD_EXIT_ONLY) { |
69a9b4b8 |
575 | exit_app = 0; |
fea7688c |
576 | } |
fc04eb16 |
577 | |
69a9b4b8 |
578 | /* Adjust thread status counts */ |
adc09a0e |
579 | if (thread->state & PERL_ITHR_DETACHED) { |
5c6ff896 |
580 | MY_POOL.detached_threads--; |
4dcb9e53 |
581 | } else { |
5c6ff896 |
582 | MY_POOL.running_threads--; |
583 | MY_POOL.joinable_threads++; |
5168baf3 |
584 | } |
adc09a0e |
585 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
586 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
69a9b4b8 |
587 | |
588 | /* Exit application if required */ |
589 | if (exit_app) { |
590 | oldscope = PL_scopestack_ix; |
591 | JMPENV_PUSH(jmp_rc); |
592 | if (jmp_rc == 0) { |
593 | /* Warn if there are unjoined threads */ |
594 | S_exit_warning(aTHX); |
595 | } else if (jmp_rc == 2) { |
596 | /* Warn handler exited */ |
597 | exit_code = STATUS_CURRENT; |
598 | while (PL_scopestack_ix > oldscope) { |
599 | LEAVE; |
600 | } |
601 | } |
602 | JMPENV_POP; |
603 | |
604 | my_exit(exit_code); |
605 | } |
606 | |
6ebc233e |
607 | /* At this point, the interpreter may have been freed, so call |
608 | * free in the the context of of the 'main' interpreter which |
609 | * can't have been freed due to the veto_cleanup mechanism. |
610 | */ |
46c5d8f1 |
611 | aTHX = MY_POOL.main_thread.interp; |
612 | |
6158f8b3 |
613 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
614 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
91604d21 |
615 | |
47ba8780 |
616 | #ifdef WIN32 |
fc04eb16 |
617 | return ((DWORD)0); |
e8f2bb9a |
618 | #else |
fc04eb16 |
619 | return (0); |
47ba8780 |
620 | #endif |
68795e93 |
621 | } |
622 | |
fc04eb16 |
623 | |
624 | /* Type conversion helper functions */ |
fea7688c |
625 | |
861d5cbe |
626 | STATIC SV * |
627 | S_ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
68795e93 |
628 | { |
629 | SV *sv; |
630 | MAGIC *mg; |
fc04eb16 |
631 | |
6158f8b3 |
632 | if (inc) |
633 | S_ithread_count_inc(aTHX_ thread); |
fc04eb16 |
634 | |
635 | if (! obj) { |
636 | obj = newSV(0); |
68795e93 |
637 | } |
fc04eb16 |
638 | |
639 | sv = newSVrv(obj, classname); |
640 | sv_setiv(sv, PTR2IV(thread)); |
641 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
642 | mg->mg_flags |= MGf_DUP; |
643 | SvREADONLY_on(sv); |
fc04eb16 |
644 | |
645 | return (obj); |
68795e93 |
646 | } |
47ba8780 |
647 | |
861d5cbe |
648 | STATIC ithread * |
649 | S_SV_to_ithread(pTHX_ SV *sv) |
68795e93 |
650 | { |
fc04eb16 |
651 | /* Argument is a thread */ |
652 | if (SvROK(sv)) { |
653 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
654 | } |
655 | /* Argument is classname, therefore return current thread */ |
656 | return (S_ithread_get(aTHX)); |
47ba8780 |
657 | } |
658 | |
47ba8780 |
659 | |
fc04eb16 |
660 | /* threads->create() |
661 | * Called in context of parent thread. |
5c6ff896 |
662 | * Called with MY_POOL.create_destruct_mutex locked. (Unlocked on error.) |
fc04eb16 |
663 | */ |
861d5cbe |
664 | STATIC ithread * |
fc04eb16 |
665 | S_ithread_create( |
9ca4d7fd |
666 | pTHX_ SV *init_function, |
514612b7 |
667 | IV stack_size, |
9d9ff5b1 |
668 | int gimme, |
69a9b4b8 |
669 | int exit_opt, |
fc04eb16 |
670 | SV *params) |
68795e93 |
671 | { |
fc04eb16 |
672 | ithread *thread; |
fc04eb16 |
673 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
674 | |
fc04eb16 |
675 | SV **tmps_tmp = PL_tmps_stack; |
676 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
677 | #ifndef WIN32 |
fc04eb16 |
678 | int rc_stack_size = 0; |
679 | int rc_thread_create = 0; |
d94006e8 |
680 | #endif |
adc09a0e |
681 | dMY_POOL; |
3b1c3273 |
682 | |
adc09a0e |
683 | /* Allocate thread structure in context of the main thread's interpreter */ |
5c6ff896 |
684 | { |
685 | PERL_SET_CONTEXT(MY_POOL.main_thread.interp); |
686 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
687 | } |
688 | PERL_SET_CONTEXT(aTHX); |
fc04eb16 |
689 | if (!thread) { |
5c6ff896 |
690 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
691 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
692 | my_exit(1); |
693 | } |
694 | Zero(thread, 1, ithread); |
695 | |
696 | /* Add to threads list */ |
5c6ff896 |
697 | thread->next = &MY_POOL.main_thread; |
698 | thread->prev = MY_POOL.main_thread.prev; |
699 | MY_POOL.main_thread.prev = thread; |
fc04eb16 |
700 | thread->prev->next = thread; |
e9a908c9 |
701 | MY_POOL.total_threads++; |
c05ae023 |
702 | |
6ebc233e |
703 | /* 1 ref to be held by the local var 'thread' in S_ithread_run(). |
6158f8b3 |
704 | * 1 ref to be held by the threads object that we assume we will |
6ebc233e |
705 | * be embedded in upon our return. |
706 | * 1 ref to be the responsibility of join/detach, so we don't get |
707 | * freed until join/detach, even if no thread objects remain. |
708 | * This allows the following to work: |
878090d5 |
709 | * { threads->create(sub{...}); } threads->object(1)->join; |
fc04eb16 |
710 | */ |
6158f8b3 |
711 | thread->count = 3; |
fc04eb16 |
712 | |
9ca4d7fd |
713 | /* Block new thread until ->create() call finishes */ |
fc04eb16 |
714 | MUTEX_INIT(&thread->mutex); |
9ca4d7fd |
715 | MUTEX_LOCK(&thread->mutex); |
716 | |
5c6ff896 |
717 | thread->tid = MY_POOL.tid_counter++; |
861d5cbe |
718 | thread->stack_size = S_good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
719 | thread->gimme = gimme; |
69a9b4b8 |
720 | thread->state = exit_opt; |
fc04eb16 |
721 | |
722 | /* "Clone" our interpreter into the thread's interpreter. |
723 | * This gives thread access to "static data" and code. |
724 | */ |
725 | PerlIO_flush((PerlIO *)NULL); |
726 | S_ithread_set(aTHX_ thread); |
727 | |
728 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
729 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
730 | set during the clone */ |
3b1c3273 |
731 | |
8264cf32 |
732 | #ifndef WIN32 |
b762d866 |
733 | /* perl_clone() will leave us the new interpreter's context. This poses |
734 | * two problems for our signal handler. First, it sets the new context |
735 | * before the new interpreter struct is fully initialized, so our signal |
736 | * handler might find bogus data in the interpreter struct it gets. |
737 | * Second, even if the interpreter is initialized before a signal comes in, |
738 | * we would like to avoid that interpreter receiving notifications for |
739 | * signals (especially when they ought to be for the one running in this |
740 | * thread), until it is running in its own thread. Another problem is that |
741 | * the new thread will not have set the context until some time after it |
742 | * has started, so it won't be safe for our signal handler to run until |
743 | * that time. |
744 | * |
745 | * So we block most signals here, so the new thread will inherit the signal |
746 | * mask, and unblock them right after the thread creation. The original |
747 | * mask is saved in the thread struct so that the new thread can restore |
748 | * the original mask. |
749 | */ |
750 | S_block_most_signals(&thread->initial_sigmask); |
8264cf32 |
751 | #endif |
b762d866 |
752 | |
47ba8780 |
753 | #ifdef WIN32 |
fc04eb16 |
754 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
755 | #else |
fc04eb16 |
756 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
757 | #endif |
47ba8780 |
758 | |
fc04eb16 |
759 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
760 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
761 | * context for the duration of our work for new interpreter. |
762 | */ |
763 | { |
894eec8b |
764 | CLONE_PARAMS clone_param; |
765 | |
fc04eb16 |
766 | dTHXa(thread->interp); |
767 | |
768 | MY_CXT_CLONE; |
769 | |
770 | /* Here we remove END blocks since they should only run in the thread |
771 | * they are created |
772 | */ |
773 | SvREFCNT_dec(PL_endav); |
774 | PL_endav = newAV(); |
404aaa48 |
775 | |
894eec8b |
776 | clone_param.flags = 0; |
f2e0bb91 |
777 | if (SvPOK(init_function)) { |
778 | thread->init_function = newSV(0); |
779 | sv_copypv(thread->init_function, init_function); |
780 | } else { |
dd5ef8e0 |
781 | thread->init_function = |
782 | SvREFCNT_inc(sv_dup(init_function, &clone_param)); |
fc04eb16 |
783 | } |
784 | |
785 | thread->params = sv_dup(params, &clone_param); |
d4315dd6 |
786 | SvREFCNT_inc_void(thread->params); |
fc04eb16 |
787 | |
788 | /* The code below checks that anything living on the tmps stack and |
789 | * has been cloned (so it lives in the ptr_table) has a refcount |
790 | * higher than 0. |
791 | * |
792 | * If the refcount is 0 it means that a something on the stack/context |
793 | * was holding a reference to it and since we init_stacks() in |
794 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
795 | * The reason it was cloned was that it lived on the @_ stack. |
796 | * |
797 | * Example of this can be found in bugreport 15837 where calls in the |
798 | * parameter list end up as a temp. |
799 | * |
800 | * One could argue that this fix should be in perl_clone. |
801 | */ |
802 | while (tmps_ix > 0) { |
803 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
804 | tmps_ix--; |
805 | if (sv && SvREFCNT(sv) == 0) { |
d4315dd6 |
806 | SvREFCNT_inc_void(sv); |
fc04eb16 |
807 | SvREFCNT_dec(sv); |
808 | } |
809 | } |
810 | |
811 | SvTEMP_off(thread->init_function); |
812 | ptr_table_free(PL_ptr_table); |
813 | PL_ptr_table = NULL; |
814 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
815 | } |
816 | S_ithread_set(aTHX_ current_thread); |
817 | PERL_SET_CONTEXT(aTHX); |
818 | |
819 | /* Create/start the thread */ |
47ba8780 |
820 | #ifdef WIN32 |
fc04eb16 |
821 | thread->handle = CreateThread(NULL, |
514612b7 |
822 | (DWORD)thread->stack_size, |
fc04eb16 |
823 | S_ithread_run, |
824 | (LPVOID)thread, |
514612b7 |
825 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
826 | &thread->thr); |
82c40bf6 |
827 | #else |
fc04eb16 |
828 | { |
861d5cbe |
829 | STATIC pthread_attr_t attr; |
830 | STATIC int attr_inited = 0; |
831 | STATIC int attr_joinable = PTHREAD_CREATE_JOINABLE; |
fc04eb16 |
832 | if (! attr_inited) { |
833 | pthread_attr_init(&attr); |
834 | attr_inited = 1; |
835 | } |
836 | |
fa26028c |
837 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
838 | /* Threads start out joinable */ |
839 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
840 | # endif |
fc04eb16 |
841 | |
514612b7 |
842 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
843 | /* Set thread's stack size */ |
514612b7 |
844 | if (thread->stack_size > 0) { |
845 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
846 | } |
3eb37d38 |
847 | # endif |
848 | |
fc04eb16 |
849 | /* Create the thread */ |
850 | if (! rc_stack_size) { |
851 | # ifdef OLD_PTHREADS_API |
852 | rc_thread_create = pthread_create(&thread->thr, |
853 | attr, |
854 | S_ithread_run, |
855 | (void *)thread); |
856 | # else |
857 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
858 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
859 | # endif |
860 | rc_thread_create = pthread_create(&thread->thr, |
861 | &attr, |
862 | S_ithread_run, |
863 | (void *)thread); |
19a077f6 |
864 | # endif |
fc04eb16 |
865 | } |
514612b7 |
866 | |
8264cf32 |
867 | #ifndef WIN32 |
b762d866 |
868 | /* Now it's safe to accept signals, since we're in our own interpreter's |
869 | * context and we have created the thread. |
870 | */ |
871 | S_set_sigmask(&thread->initial_sigmask); |
8264cf32 |
872 | #endif |
b762d866 |
873 | |
514612b7 |
874 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
875 | /* Try to get thread's actual stack size */ |
876 | { |
877 | size_t stacksize; |
58a3a76c |
878 | #ifdef HPUX1020 |
879 | stacksize = pthread_attr_getstacksize(attr); |
880 | #else |
881 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
882 | #endif |
883 | if (stacksize > 0) { |
514612b7 |
884 | thread->stack_size = (IV)stacksize; |
885 | } |
514612b7 |
886 | } |
887 | # endif |
fc04eb16 |
888 | } |
82c40bf6 |
889 | #endif |
bcd9ca9b |
890 | |
fc04eb16 |
891 | /* Check for errors */ |
d94006e8 |
892 | #ifdef WIN32 |
fc04eb16 |
893 | if (thread->handle == NULL) { |
d94006e8 |
894 | #else |
fc04eb16 |
895 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
896 | #endif |
9ca4d7fd |
897 | /* Must unlock mutex for destruct call */ |
5c6ff896 |
898 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
899 | sv_2mortal(params); |
adc09a0e |
900 | thread->state |= PERL_ITHR_NONVIABLE; |
6ebc233e |
901 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
d94006e8 |
902 | #ifndef WIN32 |
514612b7 |
903 | if (ckWARN_d(WARN_THREADS)) { |
fea7688c |
904 | if (rc_stack_size) { |
514612b7 |
905 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
fea7688c |
906 | } else { |
514612b7 |
907 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
fea7688c |
908 | } |
514612b7 |
909 | } |
d94006e8 |
910 | #endif |
9ca4d7fd |
911 | return (NULL); |
fc04eb16 |
912 | } |
913 | |
5c6ff896 |
914 | MY_POOL.running_threads++; |
fc04eb16 |
915 | sv_2mortal(params); |
9ca4d7fd |
916 | return (thread); |
68795e93 |
917 | } |
47ba8780 |
918 | |
73e09c8f |
919 | #endif /* USE_ITHREADS */ |
e1c44605 |
920 | |
fcea4b7c |
921 | |
fc04eb16 |
922 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
923 | PROTOTYPES: DISABLE |
8222d950 |
924 | |
73e09c8f |
925 | #ifdef USE_ITHREADS |
926 | |
68795e93 |
927 | void |
f4cc38af |
928 | ithread_create(...) |
929 | PREINIT: |
930 | char *classname; |
514612b7 |
931 | ithread *thread; |
f4cc38af |
932 | SV *function_to_call; |
933 | AV *params; |
514612b7 |
934 | HV *specs; |
935 | IV stack_size; |
9d9ff5b1 |
936 | int context; |
69a9b4b8 |
937 | int exit_opt; |
938 | SV *thread_exit_only; |
9d9ff5b1 |
939 | char *str; |
514612b7 |
940 | int idx; |
f4cc38af |
941 | int ii; |
5c6ff896 |
942 | dMY_POOL; |
f4cc38af |
943 | CODE: |
514612b7 |
944 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
fea7688c |
945 | if (--items < 2) { |
18b9e6f5 |
946 | Perl_croak(aTHX_ "Usage: threads->create(\\%%specs, function, ...)"); |
fea7688c |
947 | } |
514612b7 |
948 | specs = (HV*)SvRV(ST(1)); |
949 | idx = 1; |
950 | } else { |
fea7688c |
951 | if (items < 2) { |
514612b7 |
952 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
fea7688c |
953 | } |
514612b7 |
954 | specs = NULL; |
955 | idx = 0; |
956 | } |
f4cc38af |
957 | |
514612b7 |
958 | if (sv_isobject(ST(0))) { |
959 | /* $thr->create() */ |
960 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
961 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
962 | MUTEX_LOCK(&thread->mutex); |
514612b7 |
963 | stack_size = thread->stack_size; |
69a9b4b8 |
964 | exit_opt = thread->state & PERL_ITHR_THREAD_EXIT_ONLY; |
8718f9a1 |
965 | MUTEX_UNLOCK(&thread->mutex); |
514612b7 |
966 | } else { |
967 | /* threads->create() */ |
968 | classname = (char *)SvPV_nolen(ST(0)); |
5c6ff896 |
969 | stack_size = MY_POOL.default_stack_size; |
8583b257 |
970 | thread_exit_only = get_sv("threads::thread_exit_only", GV_ADD); |
69a9b4b8 |
971 | exit_opt = (SvTRUE(thread_exit_only)) |
972 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
514612b7 |
973 | } |
974 | |
975 | function_to_call = ST(idx+1); |
976 | |
9d9ff5b1 |
977 | context = -1; |
514612b7 |
978 | if (specs) { |
979 | /* stack_size */ |
980 | if (hv_exists(specs, "stack", 5)) { |
981 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
982 | } else if (hv_exists(specs, "stacksize", 9)) { |
983 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
984 | } else if (hv_exists(specs, "stack_size", 10)) { |
985 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
986 | } |
9d9ff5b1 |
987 | |
988 | /* context */ |
989 | if (hv_exists(specs, "context", 7)) { |
990 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
991 | switch (*str) { |
992 | case 'a': |
993 | case 'A': |
da140a40 |
994 | case 'l': |
995 | case 'L': |
9d9ff5b1 |
996 | context = G_ARRAY; |
997 | break; |
998 | case 's': |
999 | case 'S': |
1000 | context = G_SCALAR; |
1001 | break; |
1002 | case 'v': |
1003 | case 'V': |
1004 | context = G_VOID; |
1005 | break; |
1006 | default: |
1007 | Perl_croak(aTHX_ "Invalid context: %s", str); |
1008 | } |
1009 | } else if (hv_exists(specs, "array", 5)) { |
1010 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
1011 | context = G_ARRAY; |
1012 | } |
da140a40 |
1013 | } else if (hv_exists(specs, "list", 4)) { |
1014 | if (SvTRUE(*hv_fetch(specs, "list", 4, 0))) { |
1015 | context = G_ARRAY; |
1016 | } |
9d9ff5b1 |
1017 | } else if (hv_exists(specs, "scalar", 6)) { |
1018 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
1019 | context = G_SCALAR; |
1020 | } |
1021 | } else if (hv_exists(specs, "void", 4)) { |
1022 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
1023 | context = G_VOID; |
1024 | } |
1025 | } |
69a9b4b8 |
1026 | |
1027 | /* exit => thread_only */ |
1028 | if (hv_exists(specs, "exit", 4)) { |
1029 | str = (char *)SvPV_nolen(*hv_fetch(specs, "exit", 4, 0)); |
1030 | exit_opt = (*str == 't' || *str == 'T') |
1031 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
1032 | } |
9d9ff5b1 |
1033 | } |
1034 | if (context == -1) { |
1035 | context = GIMME_V; /* Implicit context */ |
1036 | } else { |
1037 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
1038 | } |
f4cc38af |
1039 | |
1040 | /* Function args */ |
1041 | params = newAV(); |
1042 | if (items > 2) { |
514612b7 |
1043 | for (ii=2; ii < items ; ii++) { |
1044 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
1045 | } |
1046 | } |
1047 | |
1048 | /* Create thread */ |
5c6ff896 |
1049 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1050 | thread = S_ithread_create(aTHX_ function_to_call, |
1051 | stack_size, |
1052 | context, |
1053 | exit_opt, |
1054 | newRV_noinc((SV*)params)); |
1055 | if (! thread) { |
1056 | XSRETURN_UNDEF; /* Mutex already unlocked */ |
1057 | } |
861d5cbe |
1058 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, FALSE)); |
adc09a0e |
1059 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1060 | |
1061 | /* Let thread run */ |
1062 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
1063 | |
f4cc38af |
1064 | /* XSRETURN(1); - implied */ |
1065 | |
8222d950 |
1066 | |
68795e93 |
1067 | void |
f4cc38af |
1068 | ithread_list(...) |
1069 | PREINIT: |
1070 | char *classname; |
fc04eb16 |
1071 | ithread *thread; |
f4cc38af |
1072 | int list_context; |
1073 | IV count = 0; |
11db694d |
1074 | int want_running = 0; |
8718f9a1 |
1075 | int state; |
5c6ff896 |
1076 | dMY_POOL; |
f4cc38af |
1077 | PPCODE: |
1078 | /* Class method only */ |
fea7688c |
1079 | if (SvROK(ST(0))) { |
ead32952 |
1080 | Perl_croak(aTHX_ "Usage: threads->list(...)"); |
fea7688c |
1081 | } |
f4cc38af |
1082 | classname = (char *)SvPV_nolen(ST(0)); |
1083 | |
1084 | /* Calling context */ |
1085 | list_context = (GIMME_V == G_ARRAY); |
1086 | |
ead32952 |
1087 | /* Running or joinable parameter */ |
1088 | if (items > 1) { |
1089 | want_running = SvTRUE(ST(1)); |
1090 | } |
1091 | |
f4cc38af |
1092 | /* Walk through threads list */ |
5c6ff896 |
1093 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1094 | for (thread = MY_POOL.main_thread.next; |
1095 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1096 | thread = thread->next) |
f4cc38af |
1097 | { |
8718f9a1 |
1098 | MUTEX_LOCK(&thread->mutex); |
1099 | state = thread->state; |
1100 | MUTEX_UNLOCK(&thread->mutex); |
1101 | |
f4cc38af |
1102 | /* Ignore detached or joined threads */ |
8718f9a1 |
1103 | if (state & PERL_ITHR_UNCALLABLE) { |
f4cc38af |
1104 | continue; |
1105 | } |
ead32952 |
1106 | |
1107 | /* Filter per parameter */ |
1108 | if (items > 1) { |
1109 | if (want_running) { |
8718f9a1 |
1110 | if (state & PERL_ITHR_FINISHED) { |
ead32952 |
1111 | continue; /* Not running */ |
1112 | } |
1113 | } else { |
8718f9a1 |
1114 | if (! (state & PERL_ITHR_FINISHED)) { |
ead32952 |
1115 | continue; /* Still running - not joinable yet */ |
1116 | } |
1117 | } |
1118 | } |
1119 | |
f4cc38af |
1120 | /* Push object on stack if list context */ |
1121 | if (list_context) { |
861d5cbe |
1122 | XPUSHs(sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
1123 | } |
1124 | count++; |
1125 | } |
5c6ff896 |
1126 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
f4cc38af |
1127 | /* If scalar context, send back count */ |
1128 | if (! list_context) { |
1129 | XSRETURN_IV(count); |
1130 | } |
678a9b6c |
1131 | |
1132 | |
1133 | void |
f4cc38af |
1134 | ithread_self(...) |
1135 | PREINIT: |
1136 | char *classname; |
fcea4b7c |
1137 | ithread *thread; |
f4cc38af |
1138 | CODE: |
1139 | /* Class method only */ |
11db694d |
1140 | if ((items != 1) || SvROK(ST(0))) { |
f4cc38af |
1141 | Perl_croak(aTHX_ "Usage: threads->self()"); |
fea7688c |
1142 | } |
f4cc38af |
1143 | classname = (char *)SvPV_nolen(ST(0)); |
1144 | |
fcea4b7c |
1145 | thread = S_ithread_get(aTHX); |
1146 | |
861d5cbe |
1147 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1148 | /* XSRETURN(1); - implied */ |
47ba8780 |
1149 | |
47ba8780 |
1150 | |
1151 | void |
f4cc38af |
1152 | ithread_tid(...) |
1153 | PREINIT: |
1154 | ithread *thread; |
1155 | CODE: |
11db694d |
1156 | PERL_UNUSED_VAR(items); |
861d5cbe |
1157 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1158 | XST_mUV(0, thread->tid); |
1159 | /* XSRETURN(1); - implied */ |
1160 | |
e1c44605 |
1161 | |
f9dff5f5 |
1162 | void |
f4cc38af |
1163 | ithread_join(...) |
1164 | PREINIT: |
fcea4b7c |
1165 | ithread *thread; |
8718f9a1 |
1166 | ithread *current_thread; |
fcea4b7c |
1167 | int join_err; |
6ebc233e |
1168 | AV *params = NULL; |
f4cc38af |
1169 | int len; |
1170 | int ii; |
12701bb8 |
1171 | #ifndef WIN32 |
8718f9a1 |
1172 | int rc_join; |
fcea4b7c |
1173 | void *retval; |
1174 | #endif |
5c6ff896 |
1175 | dMY_POOL; |
f4cc38af |
1176 | PPCODE: |
1177 | /* Object method only */ |
11db694d |
1178 | if ((items != 1) || ! sv_isobject(ST(0))) { |
f4cc38af |
1179 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
fea7688c |
1180 | } |
f4cc38af |
1181 | |
8718f9a1 |
1182 | /* Check if the thread is joinable and not ourselves */ |
861d5cbe |
1183 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1184 | current_thread = S_ithread_get(aTHX); |
1185 | |
1186 | MUTEX_LOCK(&thread->mutex); |
1187 | if ((join_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1188 | MUTEX_UNLOCK(&thread->mutex); |
1189 | Perl_croak(aTHX_ (join_err & PERL_ITHR_DETACHED) |
1190 | ? "Cannot join a detached thread" |
1191 | : "Thread already joined"); |
1192 | } else if (thread->tid == current_thread->tid) { |
1193 | MUTEX_UNLOCK(&thread->mutex); |
1194 | Perl_croak(aTHX_ "Cannot join self"); |
fcea4b7c |
1195 | } |
1196 | |
8718f9a1 |
1197 | /* Mark as joined */ |
1198 | thread->state |= PERL_ITHR_JOINED; |
1199 | MUTEX_UNLOCK(&thread->mutex); |
1200 | |
1201 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1202 | MY_POOL.joinable_threads--; |
1203 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
1204 | |
fcea4b7c |
1205 | /* Join the thread */ |
1206 | #ifdef WIN32 |
8718f9a1 |
1207 | if (WaitForSingleObject(thread->handle, INFINITE) != WAIT_OBJECT_0) { |
1208 | /* Timeout/abandonment unexpected here; check $^E */ |
1209 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1210 | }; |
fcea4b7c |
1211 | #else |
8718f9a1 |
1212 | if ((rc_join = pthread_join(thread->thr, &retval)) != 0) { |
1213 | /* In progress/deadlock/unknown unexpected here; check $! */ |
1214 | errno = rc_join; |
1215 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1216 | }; |
fcea4b7c |
1217 | #endif |
1218 | |
1219 | MUTEX_LOCK(&thread->mutex); |
fcea4b7c |
1220 | /* Get the return value from the call_sv */ |
955c272e |
1221 | /* Objects do not survive this process - FIXME */ |
7df0357e |
1222 | if ((thread->gimme & G_WANT) != G_VOID) { |
fcea4b7c |
1223 | AV *params_copy; |
1224 | PerlInterpreter *other_perl; |
1225 | CLONE_PARAMS clone_params; |
fcea4b7c |
1226 | |
1227 | params_copy = (AV *)SvRV(thread->params); |
1228 | other_perl = thread->interp; |
1229 | clone_params.stashes = newAV(); |
1230 | clone_params.flags = CLONEf_JOIN_IN; |
1231 | PL_ptr_table = ptr_table_new(); |
fcea4b7c |
1232 | S_ithread_set(aTHX_ thread); |
1233 | /* Ensure 'meaningful' addresses retain their meaning */ |
1234 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1235 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1236 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1237 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
1238 | S_ithread_set(aTHX_ current_thread); |
1239 | SvREFCNT_dec(clone_params.stashes); |
d4315dd6 |
1240 | SvREFCNT_inc_void(params); |
fcea4b7c |
1241 | ptr_table_free(PL_ptr_table); |
1242 | PL_ptr_table = NULL; |
1243 | } |
1244 | |
955c272e |
1245 | /* If thread didn't die, then we can free its interpreter */ |
1246 | if (! (thread->state & PERL_ITHR_DIED)) { |
1247 | S_ithread_clear(aTHX_ thread); |
1248 | } |
6ebc233e |
1249 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
955c272e |
1250 | |
fcea4b7c |
1251 | /* If no return values, then just return */ |
f4cc38af |
1252 | if (! params) { |
1253 | XSRETURN_UNDEF; |
1254 | } |
1255 | |
1256 | /* Put return values on stack */ |
1257 | len = (int)AvFILL(params); |
1258 | for (ii=0; ii <= len; ii++) { |
1259 | SV* param = av_shift(params); |
1260 | XPUSHs(sv_2mortal(param)); |
1261 | } |
1262 | |
1263 | /* Free return value array */ |
1264 | SvREFCNT_dec(params); |
1265 | |
1266 | |
1267 | void |
1268 | ithread_yield(...) |
1269 | CODE: |
11db694d |
1270 | PERL_UNUSED_VAR(items); |
f4cc38af |
1271 | YIELD; |
1272 | |
1273 | |
1274 | void |
1275 | ithread_detach(...) |
1276 | PREINIT: |
1277 | ithread *thread; |
fcea4b7c |
1278 | int detach_err; |
5c6ff896 |
1279 | dMY_POOL; |
f4cc38af |
1280 | CODE: |
11db694d |
1281 | PERL_UNUSED_VAR(items); |
1282 | |
fcea4b7c |
1283 | /* Detach the thread */ |
8718f9a1 |
1284 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
5c6ff896 |
1285 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1286 | MUTEX_LOCK(&thread->mutex); |
8718f9a1 |
1287 | if (! (detach_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1288 | /* Thread is detachable */ |
1289 | thread->state |= PERL_ITHR_DETACHED; |
fcea4b7c |
1290 | #ifdef WIN32 |
8718f9a1 |
1291 | /* Windows has no 'detach thread' function */ |
fcea4b7c |
1292 | #else |
8718f9a1 |
1293 | PERL_THREAD_DETACH(thread->thr); |
fcea4b7c |
1294 | #endif |
8718f9a1 |
1295 | if (thread->state & PERL_ITHR_FINISHED) { |
1296 | MY_POOL.joinable_threads--; |
1297 | } else { |
1298 | MY_POOL.running_threads--; |
1299 | MY_POOL.detached_threads++; |
1300 | } |
4dcb9e53 |
1301 | } |
adc09a0e |
1302 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
1303 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
4dcb9e53 |
1304 | |
8718f9a1 |
1305 | if (detach_err) { |
1306 | Perl_croak(aTHX_ (detach_err & PERL_ITHR_DETACHED) |
1307 | ? "Thread already detached" |
1308 | : "Cannot detach a joined thread"); |
1309 | } |
1310 | |
955c272e |
1311 | /* If thread is finished and didn't die, |
1312 | * then we can free its interpreter */ |
1313 | MUTEX_LOCK(&thread->mutex); |
1314 | if ((thread->state & PERL_ITHR_FINISHED) && |
1315 | ! (thread->state & PERL_ITHR_DIED)) |
1316 | { |
1317 | S_ithread_clear(aTHX_ thread); |
1318 | } |
6ebc233e |
1319 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
f4cc38af |
1320 | |
47ba8780 |
1321 | |
1322 | void |
c0003851 |
1323 | ithread_kill(...) |
1324 | PREINIT: |
1325 | ithread *thread; |
1326 | char *sig_name; |
1327 | IV signal; |
1328 | CODE: |
1329 | /* Must have safe signals */ |
fea7688c |
1330 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
4dcb9e53 |
1331 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
fea7688c |
1332 | } |
c0003851 |
1333 | |
1334 | /* Object method only */ |
11db694d |
1335 | if ((items != 2) || ! sv_isobject(ST(0))) { |
c0003851 |
1336 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
fea7688c |
1337 | } |
c0003851 |
1338 | |
c0003851 |
1339 | /* Get signal */ |
1340 | sig_name = SvPV_nolen(ST(1)); |
1341 | if (isALPHA(*sig_name)) { |
fea7688c |
1342 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') { |
c0003851 |
1343 | sig_name += 3; |
fea7688c |
1344 | } |
1345 | if ((signal = whichsig(sig_name)) < 0) { |
c0003851 |
1346 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
fea7688c |
1347 | } |
1348 | } else { |
c0003851 |
1349 | signal = SvIV(ST(1)); |
fea7688c |
1350 | } |
c0003851 |
1351 | |
1352 | /* Set the signal for the thread */ |
861d5cbe |
1353 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
4dcb9e53 |
1354 | MUTEX_LOCK(&thread->mutex); |
3ceb02cd |
1355 | if (thread->interp) { |
c0003851 |
1356 | dTHXa(thread->interp); |
1357 | PL_psig_pend[signal]++; |
1358 | PL_sig_pending = 1; |
1359 | } |
4dcb9e53 |
1360 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1361 | |
1362 | /* Return the thread to allow for method chaining */ |
1363 | ST(0) = ST(0); |
1364 | /* XSRETURN(1); - implied */ |
1365 | |
1366 | |
1367 | void |
f4cc38af |
1368 | ithread_DESTROY(...) |
1369 | CODE: |
11db694d |
1370 | PERL_UNUSED_VAR(items); |
fcea4b7c |
1371 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1372 | |
1373 | |
1374 | void |
1375 | ithread_equal(...) |
fc04eb16 |
1376 | PREINIT: |
1377 | int are_equal = 0; |
f4cc38af |
1378 | CODE: |
11db694d |
1379 | PERL_UNUSED_VAR(items); |
1380 | |
fc04eb16 |
1381 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1382 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1383 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1384 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1385 | are_equal = (thr1->tid == thr2->tid); |
1386 | } |
1387 | if (are_equal) { |
1388 | XST_mYES(0); |
f4cc38af |
1389 | } else { |
fc04eb16 |
1390 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1391 | XST_mIV(0, 0); |
1392 | } |
1393 | /* XSRETURN(1); - implied */ |
1394 | |
47ba8780 |
1395 | |
47ba8780 |
1396 | void |
f4cc38af |
1397 | ithread_object(...) |
1398 | PREINIT: |
1399 | char *classname; |
1400 | UV tid; |
fc04eb16 |
1401 | ithread *thread; |
8718f9a1 |
1402 | int state; |
9ca4d7fd |
1403 | int have_obj = 0; |
5c6ff896 |
1404 | dMY_POOL; |
f4cc38af |
1405 | CODE: |
1406 | /* Class method only */ |
fea7688c |
1407 | if (SvROK(ST(0))) { |
f4cc38af |
1408 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
fea7688c |
1409 | } |
f4cc38af |
1410 | classname = (char *)SvPV_nolen(ST(0)); |
1411 | |
1412 | if ((items < 2) || ! SvOK(ST(1))) { |
1413 | XSRETURN_UNDEF; |
1414 | } |
1415 | |
fc04eb16 |
1416 | /* threads->object($tid) */ |
f4cc38af |
1417 | tid = SvUV(ST(1)); |
1418 | |
1419 | /* Walk through threads list */ |
5c6ff896 |
1420 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1421 | for (thread = MY_POOL.main_thread.next; |
1422 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1423 | thread = thread->next) |
f4cc38af |
1424 | { |
9ca4d7fd |
1425 | /* Look for TID */ |
1426 | if (thread->tid == tid) { |
1427 | /* Ignore if detached or joined */ |
8718f9a1 |
1428 | MUTEX_LOCK(&thread->mutex); |
1429 | state = thread->state; |
1430 | MUTEX_UNLOCK(&thread->mutex); |
1431 | if (! (state & PERL_ITHR_UNCALLABLE)) { |
9ca4d7fd |
1432 | /* Put object on stack */ |
861d5cbe |
1433 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
9ca4d7fd |
1434 | have_obj = 1; |
1435 | } |
1436 | break; |
f4cc38af |
1437 | } |
f4cc38af |
1438 | } |
5c6ff896 |
1439 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1440 | |
1441 | if (! have_obj) { |
f4cc38af |
1442 | XSRETURN_UNDEF; |
1443 | } |
1444 | /* XSRETURN(1); - implied */ |
1445 | |
1446 | |
1447 | void |
1448 | ithread__handle(...); |
1449 | PREINIT: |
1450 | ithread *thread; |
1451 | CODE: |
11db694d |
1452 | PERL_UNUSED_VAR(items); |
861d5cbe |
1453 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1454 | #ifdef WIN32 |
fcea4b7c |
1455 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1456 | #else |
75ba4ae2 |
1457 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1458 | #endif |
1459 | /* XSRETURN(1); - implied */ |
68795e93 |
1460 | |
514612b7 |
1461 | |
1462 | void |
1463 | ithread_get_stack_size(...) |
1464 | PREINIT: |
1465 | IV stack_size; |
5c6ff896 |
1466 | dMY_POOL; |
514612b7 |
1467 | CODE: |
11db694d |
1468 | PERL_UNUSED_VAR(items); |
514612b7 |
1469 | if (sv_isobject(ST(0))) { |
1470 | /* $thr->get_stack_size() */ |
1471 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1472 | stack_size = thread->stack_size; |
1473 | } else { |
1474 | /* threads->get_stack_size() */ |
5c6ff896 |
1475 | stack_size = MY_POOL.default_stack_size; |
514612b7 |
1476 | } |
1477 | XST_mIV(0, stack_size); |
1478 | /* XSRETURN(1); - implied */ |
1479 | |
1480 | |
1481 | void |
1482 | ithread_set_stack_size(...) |
1483 | PREINIT: |
1484 | IV old_size; |
5c6ff896 |
1485 | dMY_POOL; |
514612b7 |
1486 | CODE: |
fea7688c |
1487 | if (items != 2) { |
514612b7 |
1488 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
fea7688c |
1489 | } |
1490 | if (sv_isobject(ST(0))) { |
514612b7 |
1491 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
fea7688c |
1492 | } |
6ebc233e |
1493 | if (! looks_like_number(ST(1))) { |
1494 | Perl_croak(aTHX_ "Stack size must be numeric"); |
1495 | } |
514612b7 |
1496 | |
5c6ff896 |
1497 | old_size = MY_POOL.default_stack_size; |
1498 | MY_POOL.default_stack_size = S_good_stack_size(aTHX_ SvIV(ST(1))); |
514612b7 |
1499 | XST_mIV(0, old_size); |
1500 | /* XSRETURN(1); - implied */ |
1501 | |
ead32952 |
1502 | |
1503 | void |
1504 | ithread_is_running(...) |
1505 | PREINIT: |
1506 | ithread *thread; |
1507 | CODE: |
1508 | /* Object method only */ |
11db694d |
1509 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1510 | Perl_croak(aTHX_ "Usage: $thr->is_running()"); |
fea7688c |
1511 | } |
ead32952 |
1512 | |
1513 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
1514 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1515 | ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes; |
8718f9a1 |
1516 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1517 | /* XSRETURN(1); - implied */ |
1518 | |
1519 | |
1520 | void |
1521 | ithread_is_detached(...) |
1522 | PREINIT: |
1523 | ithread *thread; |
1524 | CODE: |
11db694d |
1525 | PERL_UNUSED_VAR(items); |
861d5cbe |
1526 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1527 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1528 | ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no; |
8718f9a1 |
1529 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1530 | /* XSRETURN(1); - implied */ |
1531 | |
1532 | |
1533 | void |
1534 | ithread_is_joinable(...) |
1535 | PREINIT: |
1536 | ithread *thread; |
1537 | CODE: |
1538 | /* Object method only */ |
11db694d |
1539 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1540 | Perl_croak(aTHX_ "Usage: $thr->is_joinable()"); |
fea7688c |
1541 | } |
ead32952 |
1542 | |
1543 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1544 | MUTEX_LOCK(&thread->mutex); |
1545 | ST(0) = ((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
1546 | ! (thread->state & PERL_ITHR_UNCALLABLE)) |
ead32952 |
1547 | ? &PL_sv_yes : &PL_sv_no; |
1548 | MUTEX_UNLOCK(&thread->mutex); |
1549 | /* XSRETURN(1); - implied */ |
1550 | |
1551 | |
1552 | void |
1553 | ithread_wantarray(...) |
1554 | PREINIT: |
1555 | ithread *thread; |
1556 | CODE: |
11db694d |
1557 | PERL_UNUSED_VAR(items); |
861d5cbe |
1558 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
7df0357e |
1559 | ST(0) = ((thread->gimme & G_WANT) == G_ARRAY) ? &PL_sv_yes : |
1560 | ((thread->gimme & G_WANT) == G_VOID) ? &PL_sv_undef |
7ef93cb2 |
1561 | /* G_SCALAR */ : &PL_sv_no; |
ead32952 |
1562 | /* XSRETURN(1); - implied */ |
1563 | |
69a9b4b8 |
1564 | |
1565 | void |
1566 | ithread_set_thread_exit_only(...) |
1567 | PREINIT: |
1568 | ithread *thread; |
1569 | CODE: |
fea7688c |
1570 | if (items != 2) { |
69a9b4b8 |
1571 | Perl_croak(aTHX_ "Usage: ->set_thread_exit_only(boolean)"); |
fea7688c |
1572 | } |
861d5cbe |
1573 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
69a9b4b8 |
1574 | MUTEX_LOCK(&thread->mutex); |
1575 | if (SvTRUE(ST(1))) { |
1576 | thread->state |= PERL_ITHR_THREAD_EXIT_ONLY; |
1577 | } else { |
1578 | thread->state &= ~PERL_ITHR_THREAD_EXIT_ONLY; |
1579 | } |
1580 | MUTEX_UNLOCK(&thread->mutex); |
1581 | |
955c272e |
1582 | |
1583 | void |
1584 | ithread_error(...) |
1585 | PREINIT: |
1586 | ithread *thread; |
1587 | SV *err = NULL; |
1588 | CODE: |
1589 | /* Object method only */ |
1590 | if ((items != 1) || ! sv_isobject(ST(0))) { |
1591 | Perl_croak(aTHX_ "Usage: $thr->err()"); |
1592 | } |
1593 | |
1594 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1595 | MUTEX_LOCK(&thread->mutex); |
1596 | |
1597 | /* If thread died, then clone the error into the calling thread */ |
1598 | if (thread->state & PERL_ITHR_DIED) { |
1599 | PerlInterpreter *other_perl; |
1600 | CLONE_PARAMS clone_params; |
1601 | ithread *current_thread; |
1602 | |
1603 | other_perl = thread->interp; |
1604 | clone_params.stashes = newAV(); |
1605 | clone_params.flags = CLONEf_JOIN_IN; |
1606 | PL_ptr_table = ptr_table_new(); |
1607 | current_thread = S_ithread_get(aTHX); |
1608 | S_ithread_set(aTHX_ thread); |
1609 | /* Ensure 'meaningful' addresses retain their meaning */ |
1610 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1611 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1612 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1613 | err = sv_dup(thread->err, &clone_params); |
1614 | S_ithread_set(aTHX_ current_thread); |
1615 | SvREFCNT_dec(clone_params.stashes); |
1616 | SvREFCNT_inc_void(err); |
1617 | /* If error was an object, bless it into the correct class */ |
1618 | if (thread->err_class) { |
1619 | sv_bless(err, gv_stashpv(thread->err_class, 1)); |
1620 | } |
1621 | ptr_table_free(PL_ptr_table); |
1622 | PL_ptr_table = NULL; |
1623 | } |
1624 | |
1625 | MUTEX_UNLOCK(&thread->mutex); |
1626 | |
1627 | if (! err) { |
1628 | XSRETURN_UNDEF; |
1629 | } |
1630 | |
1631 | ST(0) = sv_2mortal(err); |
1632 | /* XSRETURN(1); - implied */ |
1633 | |
1634 | |
73e09c8f |
1635 | #endif /* USE_ITHREADS */ |
1636 | |
fc04eb16 |
1637 | |
68795e93 |
1638 | BOOT: |
1639 | { |
73e09c8f |
1640 | #ifdef USE_ITHREADS |
5c6ff896 |
1641 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, |
1642 | sizeof(MY_POOL_KEY)-1, TRUE); |
1643 | my_pool_t *my_poolp = (my_pool_t*)SvPVX(newSV(sizeof(my_pool_t)-1)); |
1644 | |
fc04eb16 |
1645 | MY_CXT_INIT; |
1646 | |
5c6ff896 |
1647 | Zero(my_poolp, 1, my_pool_t); |
1648 | sv_setuv(my_pool_sv, PTR2UV(my_poolp)); |
1649 | |
fc04eb16 |
1650 | PL_perl_destruct_level = 2; |
5c6ff896 |
1651 | MUTEX_INIT(&MY_POOL.create_destruct_mutex); |
1652 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
1653 | |
1654 | PL_threadhook = &Perl_ithread_hook; |
1655 | |
5c6ff896 |
1656 | MY_POOL.tid_counter = 1; |
1657 | # ifdef THREAD_CREATE_NEEDS_STACK |
1658 | MY_POOL.default_stack_size = THREAD_CREATE_NEEDS_STACK; |
1659 | # endif |
1660 | |
c372d929 |
1661 | /* The 'main' thread is thread 0. |
1662 | * It is detached (unjoinable) and immortal. |
1663 | */ |
fc04eb16 |
1664 | |
5c6ff896 |
1665 | MUTEX_INIT(&MY_POOL.main_thread.mutex); |
fc04eb16 |
1666 | |
1667 | /* Head of the threads list */ |
5c6ff896 |
1668 | MY_POOL.main_thread.next = &MY_POOL.main_thread; |
1669 | MY_POOL.main_thread.prev = &MY_POOL.main_thread; |
fc04eb16 |
1670 | |
5c6ff896 |
1671 | MY_POOL.main_thread.count = 1; /* Immortal */ |
fc04eb16 |
1672 | |
5c6ff896 |
1673 | MY_POOL.main_thread.interp = aTHX; |
1674 | MY_POOL.main_thread.state = PERL_ITHR_DETACHED; /* Detached */ |
1675 | MY_POOL.main_thread.stack_size = MY_POOL.default_stack_size; |
fc04eb16 |
1676 | # ifdef WIN32 |
5c6ff896 |
1677 | MY_POOL.main_thread.thr = GetCurrentThreadId(); |
fc04eb16 |
1678 | # else |
5c6ff896 |
1679 | MY_POOL.main_thread.thr = pthread_self(); |
fc04eb16 |
1680 | # endif |
1681 | |
5c6ff896 |
1682 | S_ithread_set(aTHX_ &MY_POOL.main_thread); |
1683 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
73e09c8f |
1684 | #endif /* USE_ITHREADS */ |
68795e93 |
1685 | } |