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); |
bcbea5d2 |
145 | #endif /* VMS */ |
b762d866 |
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); |
bcbea5d2 |
156 | #endif /* VMS */ |
b762d866 |
157 | } |
bcbea5d2 |
158 | #endif /* WIN32 */ |
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; |
bcbea5d2 |
187 | #ifndef WIN32 |
b762d866 |
188 | sigset_t origmask; |
bcbea5d2 |
189 | #endif |
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 | |
8264cf32 |
196 | #ifndef WIN32 |
b762d866 |
197 | /* We temporarily set the interpreter context to the interpreter being |
198 | * destroyed. It's in no condition to handle signals while it's being |
199 | * taken apart. |
200 | */ |
201 | S_block_most_signals(&origmask); |
8264cf32 |
202 | #endif |
b762d866 |
203 | |
2e676467 |
204 | interp = thread->interp; |
205 | if (interp) { |
fc04eb16 |
206 | dTHXa(interp); |
207 | |
208 | PERL_SET_CONTEXT(interp); |
209 | S_ithread_set(aTHX_ thread); |
f2cba68d |
210 | |
fc04eb16 |
211 | SvREFCNT_dec(thread->params); |
212 | thread->params = Nullsv; |
2e676467 |
213 | |
955c272e |
214 | if (thread->err) { |
215 | SvREFCNT_dec(thread->err); |
216 | thread->err = Nullsv; |
217 | } |
218 | |
fc04eb16 |
219 | perl_destruct(interp); |
9ca4d7fd |
220 | perl_free(interp); |
fc04eb16 |
221 | thread->interp = NULL; |
2e676467 |
222 | } |
fc04eb16 |
223 | |
2e676467 |
224 | PERL_SET_CONTEXT(aTHX); |
8264cf32 |
225 | #ifndef WIN32 |
b762d866 |
226 | S_set_sigmask(&origmask); |
8264cf32 |
227 | #endif |
2e676467 |
228 | } |
229 | |
68795e93 |
230 | |
6158f8b3 |
231 | /* Decrement the refcount of an ithread, and if it reaches zero, free it. |
232 | * Must be called with the mutex held. |
6ebc233e |
233 | * On return, mutex is released (or destroyed). |
234 | */ |
861d5cbe |
235 | STATIC void |
6158f8b3 |
236 | S_ithread_free(pTHX_ ithread *thread) |
68795e93 |
237 | { |
385d56e4 |
238 | #ifdef WIN32 |
fc04eb16 |
239 | HANDLE handle; |
385d56e4 |
240 | #endif |
adc09a0e |
241 | dMY_POOL; |
242 | |
6158f8b3 |
243 | if (! (thread->state & PERL_ITHR_NONVIABLE)) { |
244 | assert(thread->count > 0); |
245 | if (--thread->count > 0) { |
246 | MUTEX_UNLOCK(&thread->mutex); |
247 | return; |
248 | } |
6ebc233e |
249 | assert((thread->state & PERL_ITHR_FINISHED) && |
250 | (thread->state & PERL_ITHR_UNCALLABLE)); |
fc04eb16 |
251 | } |
adc09a0e |
252 | MUTEX_UNLOCK(&thread->mutex); |
9feacc09 |
253 | |
fc04eb16 |
254 | /* Main thread (0) is immortal and should never get here */ |
255 | assert(thread->tid != 0); |
256 | |
257 | /* Remove from circular list of threads */ |
5c6ff896 |
258 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
adc09a0e |
259 | assert(thread->prev && thread->next); |
260 | thread->next->prev = thread->prev; |
261 | thread->prev->next = thread->next; |
fc04eb16 |
262 | thread->next = NULL; |
263 | thread->prev = NULL; |
5c6ff896 |
264 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
c2f2a82b |
265 | |
fc04eb16 |
266 | /* Thread is now disowned */ |
9ca4d7fd |
267 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
268 | S_ithread_clear(aTHX_ thread); |
385d56e4 |
269 | |
270 | #ifdef WIN32 |
fc04eb16 |
271 | handle = thread->handle; |
272 | thread->handle = NULL; |
385d56e4 |
273 | #endif |
fc04eb16 |
274 | MUTEX_UNLOCK(&thread->mutex); |
275 | MUTEX_DESTROY(&thread->mutex); |
385d56e4 |
276 | |
c7667023 |
277 | #ifdef WIN32 |
fea7688c |
278 | if (handle) { |
fc04eb16 |
279 | CloseHandle(handle); |
fea7688c |
280 | } |
c7667023 |
281 | #endif |
385d56e4 |
282 | |
fc04eb16 |
283 | PerlMemShared_free(thread); |
ae3fba3d |
284 | |
285 | /* total_threads >= 1 is used to veto cleanup by the main thread, |
286 | * should it happen to exit while other threads still exist. |
6ebc233e |
287 | * Decrement this as the very last thing in the thread's existence. |
288 | * Otherwise, MY_POOL and global state such as PL_op_mutex may get |
289 | * freed while we're still using it. |
ae3fba3d |
290 | */ |
291 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
292 | MY_POOL.total_threads--; |
293 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
68795e93 |
294 | } |
295 | |
fc04eb16 |
296 | |
6158f8b3 |
297 | static void |
298 | S_ithread_count_inc(pTHX_ ithread *thread) |
299 | { |
300 | MUTEX_LOCK(&thread->mutex); |
301 | thread->count++; |
302 | MUTEX_UNLOCK(&thread->mutex); |
303 | } |
304 | |
305 | |
69a9b4b8 |
306 | /* Warn if exiting with any unjoined threads */ |
861d5cbe |
307 | STATIC int |
69a9b4b8 |
308 | S_exit_warning(pTHX) |
62375a60 |
309 | { |
e9a908c9 |
310 | int veto_cleanup, warn; |
adc09a0e |
311 | dMY_POOL; |
69a9b4b8 |
312 | |
5c6ff896 |
313 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
e9a908c9 |
314 | veto_cleanup = (MY_POOL.total_threads > 0); |
315 | warn = (MY_POOL.running_threads || MY_POOL.joinable_threads); |
5c6ff896 |
316 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
60bd5ef6 |
317 | |
e9a908c9 |
318 | if (warn) { |
fc04eb16 |
319 | if (ckWARN_d(WARN_THREADS)) { |
4dcb9e53 |
320 | Perl_warn(aTHX_ "Perl exited with active threads:\n\t%" |
321 | IVdf " running and unjoined\n\t%" |
322 | IVdf " finished and unjoined\n\t%" |
323 | IVdf " running and detached\n", |
5c6ff896 |
324 | MY_POOL.running_threads, |
325 | MY_POOL.joinable_threads, |
326 | MY_POOL.detached_threads); |
fc04eb16 |
327 | } |
62375a60 |
328 | } |
69a9b4b8 |
329 | |
fc04eb16 |
330 | return (veto_cleanup); |
62375a60 |
331 | } |
332 | |
ae3fba3d |
333 | |
6ebc233e |
334 | /* Called from perl_destruct() in each thread. If it's the main thread, |
335 | * stop it from freeing everything if there are other threads still running. |
336 | */ |
69a9b4b8 |
337 | int |
338 | Perl_ithread_hook(pTHX) |
339 | { |
5c6ff896 |
340 | dMY_POOL; |
b5c80a23 |
341 | return ((aTHX == MY_POOL.main_thread.interp) ? S_exit_warning(aTHX) : 0); |
69a9b4b8 |
342 | } |
343 | |
68795e93 |
344 | |
345 | /* MAGIC (in mg.h sense) hooks */ |
346 | |
347 | int |
348 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
349 | { |
fc04eb16 |
350 | ithread *thread = (ithread *)mg->mg_ptr; |
45977657 |
351 | SvIV_set(sv, PTR2IV(thread)); |
68795e93 |
352 | SvIOK_on(sv); |
fc04eb16 |
353 | return (0); |
68795e93 |
354 | } |
355 | |
356 | int |
357 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
358 | { |
f2cba68d |
359 | ithread *thread = (ithread *)mg->mg_ptr; |
68795e93 |
360 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
361 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
fc04eb16 |
362 | return (0); |
68795e93 |
363 | } |
364 | |
365 | int |
366 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
367 | { |
6158f8b3 |
368 | S_ithread_count_inc(aTHX_ (ithread *)mg->mg_ptr); |
fc04eb16 |
369 | return (0); |
68795e93 |
370 | } |
371 | |
372 | MGVTBL ithread_vtbl = { |
fc04eb16 |
373 | ithread_mg_get, /* get */ |
374 | 0, /* set */ |
375 | 0, /* len */ |
376 | 0, /* clear */ |
377 | ithread_mg_free, /* free */ |
378 | 0, /* copy */ |
379 | ithread_mg_dup /* dup */ |
68795e93 |
380 | }; |
381 | |
47ba8780 |
382 | |
514612b7 |
383 | /* Provided default, minimum and rational stack sizes */ |
861d5cbe |
384 | STATIC IV |
385 | S_good_stack_size(pTHX_ IV stack_size) |
514612b7 |
386 | { |
5c6ff896 |
387 | dMY_POOL; |
388 | |
514612b7 |
389 | /* Use default stack size if no stack size specified */ |
fea7688c |
390 | if (! stack_size) { |
5c6ff896 |
391 | return (MY_POOL.default_stack_size); |
fea7688c |
392 | } |
514612b7 |
393 | |
394 | #ifdef PTHREAD_STACK_MIN |
395 | /* Can't use less than minimum */ |
396 | if (stack_size < PTHREAD_STACK_MIN) { |
4dcb9e53 |
397 | if (ckWARN(WARN_THREADS)) { |
514612b7 |
398 | Perl_warn(aTHX_ "Using minimum thread stack size of %" IVdf, (IV)PTHREAD_STACK_MIN); |
399 | } |
400 | return (PTHREAD_STACK_MIN); |
401 | } |
402 | #endif |
403 | |
404 | /* Round up to page size boundary */ |
5c6ff896 |
405 | if (MY_POOL.page_size <= 0) { |
d305c2c9 |
406 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
514612b7 |
407 | SETERRNO(0, SS_NORMAL); |
d305c2c9 |
408 | # ifdef _SC_PAGESIZE |
5c6ff896 |
409 | MY_POOL.page_size = sysconf(_SC_PAGESIZE); |
d305c2c9 |
410 | # else |
5c6ff896 |
411 | MY_POOL.page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
d305c2c9 |
412 | # endif |
5c6ff896 |
413 | if ((long)MY_POOL.page_size < 0) { |
514612b7 |
414 | if (errno) { |
8583b257 |
415 | SV * const error = get_sv("@", 0); |
514612b7 |
416 | (void)SvUPGRADE(error, SVt_PV); |
417 | Perl_croak(aTHX_ "PANIC: sysconf: %s", SvPV_nolen(error)); |
418 | } else { |
419 | Perl_croak(aTHX_ "PANIC: sysconf: pagesize unknown"); |
420 | } |
421 | } |
d305c2c9 |
422 | #else |
423 | # ifdef HAS_GETPAGESIZE |
5c6ff896 |
424 | MY_POOL.page_size = getpagesize(); |
514612b7 |
425 | # else |
d305c2c9 |
426 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
5c6ff896 |
427 | MY_POOL.page_size = PAGESIZE; |
d305c2c9 |
428 | # else |
5c6ff896 |
429 | MY_POOL.page_size = 8192; /* A conservative default */ |
d305c2c9 |
430 | # endif |
514612b7 |
431 | # endif |
5c6ff896 |
432 | if (MY_POOL.page_size <= 0) { |
433 | Perl_croak(aTHX_ "PANIC: bad pagesize %" IVdf, (IV)MY_POOL.page_size); |
fea7688c |
434 | } |
514612b7 |
435 | #endif |
436 | } |
5c6ff896 |
437 | stack_size = ((stack_size + (MY_POOL.page_size - 1)) / MY_POOL.page_size) * MY_POOL.page_size; |
514612b7 |
438 | |
439 | return (stack_size); |
440 | } |
441 | |
442 | |
fc04eb16 |
443 | /* Starts executing the thread. |
444 | * Passed as the C level function to run in the new thread. |
b1edfb69 |
445 | */ |
47ba8780 |
446 | #ifdef WIN32 |
861d5cbe |
447 | STATIC THREAD_RET_TYPE |
fc04eb16 |
448 | S_ithread_run(LPVOID arg) |
47ba8780 |
449 | #else |
861d5cbe |
450 | STATIC void * |
fc04eb16 |
451 | S_ithread_run(void * arg) |
47ba8780 |
452 | #endif |
fc04eb16 |
453 | { |
454 | ithread *thread = (ithread *)arg; |
69a9b4b8 |
455 | int jmp_rc = 0; |
456 | I32 oldscope; |
955c272e |
457 | int exit_app = 0; /* Thread terminated using 'exit' */ |
69a9b4b8 |
458 | int exit_code = 0; |
955c272e |
459 | int died = 0; /* Thread terminated abnormally */ |
f2cba68d |
460 | |
69a9b4b8 |
461 | dJMPENV; |
462 | |
fc04eb16 |
463 | dTHXa(thread->interp); |
47ba8780 |
464 | |
5c6ff896 |
465 | dMY_POOL; |
466 | |
9ca4d7fd |
467 | /* Blocked until ->create() call finishes */ |
fc04eb16 |
468 | MUTEX_LOCK(&thread->mutex); |
fc04eb16 |
469 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
470 | |
471 | PERL_SET_CONTEXT(thread->interp); |
472 | S_ithread_set(aTHX_ thread); |
47ba8780 |
473 | |
8264cf32 |
474 | #ifndef WIN32 |
b762d866 |
475 | /* Thread starts with most signals blocked - restore the signal mask from |
476 | * the ithread struct. |
477 | */ |
478 | S_set_sigmask(&thread->initial_sigmask); |
8264cf32 |
479 | #endif |
b762d866 |
480 | |
fc04eb16 |
481 | PL_perl_destruct_level = 2; |
f2cba68d |
482 | |
fc04eb16 |
483 | { |
484 | AV *params = (AV *)SvRV(thread->params); |
485 | int len = (int)av_len(params)+1; |
486 | int ii; |
487 | |
488 | dSP; |
489 | ENTER; |
490 | SAVETMPS; |
491 | |
492 | /* Put args on the stack */ |
493 | PUSHMARK(SP); |
494 | for (ii=0; ii < len; ii++) { |
495 | XPUSHs(av_shift(params)); |
496 | } |
497 | PUTBACK; |
498 | |
4dcb9e53 |
499 | oldscope = PL_scopestack_ix; |
500 | JMPENV_PUSH(jmp_rc); |
501 | if (jmp_rc == 0) { |
502 | /* Run the specified function */ |
503 | len = (int)call_sv(thread->init_function, thread->gimme|G_EVAL); |
504 | } else if (jmp_rc == 2) { |
69a9b4b8 |
505 | /* Thread exited */ |
506 | exit_app = 1; |
507 | exit_code = STATUS_CURRENT; |
4dcb9e53 |
508 | while (PL_scopestack_ix > oldscope) { |
509 | LEAVE; |
510 | } |
511 | } |
512 | JMPENV_POP; |
fc04eb16 |
513 | |
8264cf32 |
514 | #ifndef WIN32 |
b762d866 |
515 | /* The interpreter is finished, so this thread can stop receiving |
516 | * signals. This way, our signal handler doesn't get called in the |
517 | * middle of our parent thread calling perl_destruct()... |
518 | */ |
519 | S_block_most_signals(NULL); |
8264cf32 |
520 | #endif |
b762d866 |
521 | |
fc04eb16 |
522 | /* Remove args from stack and put back in params array */ |
523 | SPAGAIN; |
524 | for (ii=len-1; ii >= 0; ii--) { |
525 | SV *sv = POPs; |
7df0357e |
526 | if (jmp_rc == 0 && (thread->gimme & G_WANT) != G_VOID) { |
4dcb9e53 |
527 | av_store(params, ii, SvREFCNT_inc(sv)); |
528 | } |
fc04eb16 |
529 | } |
530 | |
4dcb9e53 |
531 | FREETMPS; |
532 | LEAVE; |
533 | |
955c272e |
534 | /* Check for abnormal termination */ |
535 | if (SvTRUE(ERRSV)) { |
536 | died = PERL_ITHR_DIED; |
537 | thread->err = newSVsv(ERRSV); |
538 | /* If ERRSV is an object, remember the classname and then |
539 | * rebless into 'main' so it will survive 'cloning' |
540 | */ |
541 | if (sv_isobject(thread->err)) { |
542 | thread->err_class = HvNAME(SvSTASH(SvRV(thread->err))); |
543 | sv_bless(thread->err, gv_stashpv("main", 0)); |
544 | } |
545 | |
546 | if (ckWARN_d(WARN_THREADS)) { |
547 | oldscope = PL_scopestack_ix; |
548 | JMPENV_PUSH(jmp_rc); |
549 | if (jmp_rc == 0) { |
550 | /* Warn that thread died */ |
551 | Perl_warn(aTHX_ "Thread %" UVuf " terminated abnormally: %" SVf, thread->tid, ERRSV); |
552 | } else if (jmp_rc == 2) { |
553 | /* Warn handler exited */ |
554 | exit_app = 1; |
555 | exit_code = STATUS_CURRENT; |
556 | while (PL_scopestack_ix > oldscope) { |
557 | LEAVE; |
558 | } |
4dcb9e53 |
559 | } |
955c272e |
560 | JMPENV_POP; |
4dcb9e53 |
561 | } |
fc04eb16 |
562 | } |
563 | |
fc04eb16 |
564 | /* Release function ref */ |
565 | SvREFCNT_dec(thread->init_function); |
566 | thread->init_function = Nullsv; |
567 | } |
62375a60 |
568 | |
fc04eb16 |
569 | PerlIO_flush((PerlIO *)NULL); |
570 | |
5c6ff896 |
571 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
572 | MUTEX_LOCK(&thread->mutex); |
573 | /* Mark as finished */ |
955c272e |
574 | thread->state |= (PERL_ITHR_FINISHED | died); |
69a9b4b8 |
575 | /* Clear exit flag if required */ |
fea7688c |
576 | if (thread->state & PERL_ITHR_THREAD_EXIT_ONLY) { |
69a9b4b8 |
577 | exit_app = 0; |
fea7688c |
578 | } |
fc04eb16 |
579 | |
69a9b4b8 |
580 | /* Adjust thread status counts */ |
adc09a0e |
581 | if (thread->state & PERL_ITHR_DETACHED) { |
5c6ff896 |
582 | MY_POOL.detached_threads--; |
4dcb9e53 |
583 | } else { |
5c6ff896 |
584 | MY_POOL.running_threads--; |
585 | MY_POOL.joinable_threads++; |
5168baf3 |
586 | } |
adc09a0e |
587 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
588 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
69a9b4b8 |
589 | |
590 | /* Exit application if required */ |
591 | if (exit_app) { |
592 | oldscope = PL_scopestack_ix; |
593 | JMPENV_PUSH(jmp_rc); |
594 | if (jmp_rc == 0) { |
595 | /* Warn if there are unjoined threads */ |
596 | S_exit_warning(aTHX); |
597 | } else if (jmp_rc == 2) { |
598 | /* Warn handler exited */ |
599 | exit_code = STATUS_CURRENT; |
600 | while (PL_scopestack_ix > oldscope) { |
601 | LEAVE; |
602 | } |
603 | } |
604 | JMPENV_POP; |
605 | |
606 | my_exit(exit_code); |
607 | } |
608 | |
6ebc233e |
609 | /* At this point, the interpreter may have been freed, so call |
610 | * free in the the context of of the 'main' interpreter which |
611 | * can't have been freed due to the veto_cleanup mechanism. |
612 | */ |
46c5d8f1 |
613 | aTHX = MY_POOL.main_thread.interp; |
614 | |
6158f8b3 |
615 | MUTEX_LOCK(&thread->mutex); |
6ebc233e |
616 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
91604d21 |
617 | |
47ba8780 |
618 | #ifdef WIN32 |
fc04eb16 |
619 | return ((DWORD)0); |
e8f2bb9a |
620 | #else |
fc04eb16 |
621 | return (0); |
47ba8780 |
622 | #endif |
68795e93 |
623 | } |
624 | |
fc04eb16 |
625 | |
626 | /* Type conversion helper functions */ |
fea7688c |
627 | |
861d5cbe |
628 | STATIC SV * |
629 | S_ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
68795e93 |
630 | { |
631 | SV *sv; |
632 | MAGIC *mg; |
fc04eb16 |
633 | |
6158f8b3 |
634 | if (inc) |
635 | S_ithread_count_inc(aTHX_ thread); |
fc04eb16 |
636 | |
637 | if (! obj) { |
638 | obj = newSV(0); |
68795e93 |
639 | } |
fc04eb16 |
640 | |
641 | sv = newSVrv(obj, classname); |
642 | sv_setiv(sv, PTR2IV(thread)); |
643 | mg = sv_magicext(sv, Nullsv, PERL_MAGIC_shared_scalar, &ithread_vtbl, (char *)thread, 0); |
68795e93 |
644 | mg->mg_flags |= MGf_DUP; |
645 | SvREADONLY_on(sv); |
fc04eb16 |
646 | |
647 | return (obj); |
68795e93 |
648 | } |
47ba8780 |
649 | |
861d5cbe |
650 | STATIC ithread * |
651 | S_SV_to_ithread(pTHX_ SV *sv) |
68795e93 |
652 | { |
fc04eb16 |
653 | /* Argument is a thread */ |
654 | if (SvROK(sv)) { |
655 | return (INT2PTR(ithread *, SvIV(SvRV(sv)))); |
656 | } |
657 | /* Argument is classname, therefore return current thread */ |
658 | return (S_ithread_get(aTHX)); |
47ba8780 |
659 | } |
660 | |
47ba8780 |
661 | |
fc04eb16 |
662 | /* threads->create() |
663 | * Called in context of parent thread. |
5c6ff896 |
664 | * Called with MY_POOL.create_destruct_mutex locked. (Unlocked on error.) |
fc04eb16 |
665 | */ |
861d5cbe |
666 | STATIC ithread * |
fc04eb16 |
667 | S_ithread_create( |
9ca4d7fd |
668 | pTHX_ SV *init_function, |
514612b7 |
669 | IV stack_size, |
9d9ff5b1 |
670 | int gimme, |
69a9b4b8 |
671 | int exit_opt, |
fc04eb16 |
672 | SV *params) |
68795e93 |
673 | { |
fc04eb16 |
674 | ithread *thread; |
fc04eb16 |
675 | ithread *current_thread = S_ithread_get(aTHX); |
3b1c3273 |
676 | |
fc04eb16 |
677 | SV **tmps_tmp = PL_tmps_stack; |
678 | IV tmps_ix = PL_tmps_ix; |
d94006e8 |
679 | #ifndef WIN32 |
fc04eb16 |
680 | int rc_stack_size = 0; |
681 | int rc_thread_create = 0; |
d94006e8 |
682 | #endif |
adc09a0e |
683 | dMY_POOL; |
3b1c3273 |
684 | |
adc09a0e |
685 | /* Allocate thread structure in context of the main thread's interpreter */ |
5c6ff896 |
686 | { |
687 | PERL_SET_CONTEXT(MY_POOL.main_thread.interp); |
688 | thread = (ithread *)PerlMemShared_malloc(sizeof(ithread)); |
689 | } |
690 | PERL_SET_CONTEXT(aTHX); |
fc04eb16 |
691 | if (!thread) { |
5c6ff896 |
692 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
693 | PerlLIO_write(PerlIO_fileno(Perl_error_log), PL_no_mem, strlen(PL_no_mem)); |
694 | my_exit(1); |
695 | } |
696 | Zero(thread, 1, ithread); |
697 | |
698 | /* Add to threads list */ |
5c6ff896 |
699 | thread->next = &MY_POOL.main_thread; |
700 | thread->prev = MY_POOL.main_thread.prev; |
701 | MY_POOL.main_thread.prev = thread; |
fc04eb16 |
702 | thread->prev->next = thread; |
e9a908c9 |
703 | MY_POOL.total_threads++; |
c05ae023 |
704 | |
6ebc233e |
705 | /* 1 ref to be held by the local var 'thread' in S_ithread_run(). |
6158f8b3 |
706 | * 1 ref to be held by the threads object that we assume we will |
6ebc233e |
707 | * be embedded in upon our return. |
708 | * 1 ref to be the responsibility of join/detach, so we don't get |
709 | * freed until join/detach, even if no thread objects remain. |
710 | * This allows the following to work: |
878090d5 |
711 | * { threads->create(sub{...}); } threads->object(1)->join; |
fc04eb16 |
712 | */ |
6158f8b3 |
713 | thread->count = 3; |
fc04eb16 |
714 | |
9ca4d7fd |
715 | /* Block new thread until ->create() call finishes */ |
fc04eb16 |
716 | MUTEX_INIT(&thread->mutex); |
9ca4d7fd |
717 | MUTEX_LOCK(&thread->mutex); |
718 | |
5c6ff896 |
719 | thread->tid = MY_POOL.tid_counter++; |
861d5cbe |
720 | thread->stack_size = S_good_stack_size(aTHX_ stack_size); |
9d9ff5b1 |
721 | thread->gimme = gimme; |
69a9b4b8 |
722 | thread->state = exit_opt; |
fc04eb16 |
723 | |
724 | /* "Clone" our interpreter into the thread's interpreter. |
725 | * This gives thread access to "static data" and code. |
726 | */ |
727 | PerlIO_flush((PerlIO *)NULL); |
728 | S_ithread_set(aTHX_ thread); |
729 | |
730 | SAVEBOOL(PL_srand_called); /* Save this so it becomes the correct value */ |
731 | PL_srand_called = FALSE; /* Set it to false so we can detect if it gets |
732 | set during the clone */ |
3b1c3273 |
733 | |
8264cf32 |
734 | #ifndef WIN32 |
b762d866 |
735 | /* perl_clone() will leave us the new interpreter's context. This poses |
736 | * two problems for our signal handler. First, it sets the new context |
737 | * before the new interpreter struct is fully initialized, so our signal |
738 | * handler might find bogus data in the interpreter struct it gets. |
739 | * Second, even if the interpreter is initialized before a signal comes in, |
740 | * we would like to avoid that interpreter receiving notifications for |
741 | * signals (especially when they ought to be for the one running in this |
742 | * thread), until it is running in its own thread. Another problem is that |
743 | * the new thread will not have set the context until some time after it |
744 | * has started, so it won't be safe for our signal handler to run until |
745 | * that time. |
746 | * |
747 | * So we block most signals here, so the new thread will inherit the signal |
748 | * mask, and unblock them right after the thread creation. The original |
749 | * mask is saved in the thread struct so that the new thread can restore |
750 | * the original mask. |
751 | */ |
752 | S_block_most_signals(&thread->initial_sigmask); |
8264cf32 |
753 | #endif |
b762d866 |
754 | |
47ba8780 |
755 | #ifdef WIN32 |
fc04eb16 |
756 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
757 | #else |
fc04eb16 |
758 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
759 | #endif |
47ba8780 |
760 | |
fc04eb16 |
761 | /* perl_clone() leaves us in new interpreter's context. As it is tricky |
762 | * to spot an implicit aTHX, create a new scope with aTHX matching the |
763 | * context for the duration of our work for new interpreter. |
764 | */ |
765 | { |
894eec8b |
766 | CLONE_PARAMS clone_param; |
767 | |
fc04eb16 |
768 | dTHXa(thread->interp); |
769 | |
770 | MY_CXT_CLONE; |
771 | |
772 | /* Here we remove END blocks since they should only run in the thread |
773 | * they are created |
774 | */ |
775 | SvREFCNT_dec(PL_endav); |
776 | PL_endav = newAV(); |
404aaa48 |
777 | |
894eec8b |
778 | clone_param.flags = 0; |
f2e0bb91 |
779 | if (SvPOK(init_function)) { |
780 | thread->init_function = newSV(0); |
781 | sv_copypv(thread->init_function, init_function); |
782 | } else { |
dd5ef8e0 |
783 | thread->init_function = |
784 | SvREFCNT_inc(sv_dup(init_function, &clone_param)); |
fc04eb16 |
785 | } |
786 | |
787 | thread->params = sv_dup(params, &clone_param); |
d4315dd6 |
788 | SvREFCNT_inc_void(thread->params); |
fc04eb16 |
789 | |
790 | /* The code below checks that anything living on the tmps stack and |
791 | * has been cloned (so it lives in the ptr_table) has a refcount |
792 | * higher than 0. |
793 | * |
794 | * If the refcount is 0 it means that a something on the stack/context |
795 | * was holding a reference to it and since we init_stacks() in |
796 | * perl_clone that won't get cleaned and we will get a leaked scalar. |
797 | * The reason it was cloned was that it lived on the @_ stack. |
798 | * |
799 | * Example of this can be found in bugreport 15837 where calls in the |
800 | * parameter list end up as a temp. |
801 | * |
802 | * One could argue that this fix should be in perl_clone. |
803 | */ |
804 | while (tmps_ix > 0) { |
805 | SV* sv = (SV*)ptr_table_fetch(PL_ptr_table, tmps_tmp[tmps_ix]); |
806 | tmps_ix--; |
807 | if (sv && SvREFCNT(sv) == 0) { |
d4315dd6 |
808 | SvREFCNT_inc_void(sv); |
fc04eb16 |
809 | SvREFCNT_dec(sv); |
810 | } |
811 | } |
812 | |
813 | SvTEMP_off(thread->init_function); |
814 | ptr_table_free(PL_ptr_table); |
815 | PL_ptr_table = NULL; |
816 | PL_exit_flags |= PERL_EXIT_DESTRUCT_END; |
817 | } |
818 | S_ithread_set(aTHX_ current_thread); |
819 | PERL_SET_CONTEXT(aTHX); |
820 | |
821 | /* Create/start the thread */ |
47ba8780 |
822 | #ifdef WIN32 |
fc04eb16 |
823 | thread->handle = CreateThread(NULL, |
514612b7 |
824 | (DWORD)thread->stack_size, |
fc04eb16 |
825 | S_ithread_run, |
826 | (LPVOID)thread, |
514612b7 |
827 | STACK_SIZE_PARAM_IS_A_RESERVATION, |
fc04eb16 |
828 | &thread->thr); |
82c40bf6 |
829 | #else |
fc04eb16 |
830 | { |
861d5cbe |
831 | STATIC pthread_attr_t attr; |
832 | STATIC int attr_inited = 0; |
833 | STATIC int attr_joinable = PTHREAD_CREATE_JOINABLE; |
fc04eb16 |
834 | if (! attr_inited) { |
835 | pthread_attr_init(&attr); |
836 | attr_inited = 1; |
837 | } |
838 | |
fa26028c |
839 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
fc04eb16 |
840 | /* Threads start out joinable */ |
841 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
fa26028c |
842 | # endif |
fc04eb16 |
843 | |
514612b7 |
844 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
fc04eb16 |
845 | /* Set thread's stack size */ |
514612b7 |
846 | if (thread->stack_size > 0) { |
847 | rc_stack_size = pthread_attr_setstacksize(&attr, (size_t)thread->stack_size); |
848 | } |
3eb37d38 |
849 | # endif |
850 | |
fc04eb16 |
851 | /* Create the thread */ |
852 | if (! rc_stack_size) { |
853 | # ifdef OLD_PTHREADS_API |
854 | rc_thread_create = pthread_create(&thread->thr, |
855 | attr, |
856 | S_ithread_run, |
857 | (void *)thread); |
858 | # else |
859 | # if defined(HAS_PTHREAD_ATTR_SETSCOPE) && defined(PTHREAD_SCOPE_SYSTEM) |
860 | pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); |
861 | # endif |
862 | rc_thread_create = pthread_create(&thread->thr, |
863 | &attr, |
864 | S_ithread_run, |
865 | (void *)thread); |
19a077f6 |
866 | # endif |
fc04eb16 |
867 | } |
514612b7 |
868 | |
8264cf32 |
869 | #ifndef WIN32 |
b762d866 |
870 | /* Now it's safe to accept signals, since we're in our own interpreter's |
871 | * context and we have created the thread. |
872 | */ |
873 | S_set_sigmask(&thread->initial_sigmask); |
8264cf32 |
874 | #endif |
b762d866 |
875 | |
514612b7 |
876 | # ifdef _POSIX_THREAD_ATTR_STACKSIZE |
877 | /* Try to get thread's actual stack size */ |
878 | { |
879 | size_t stacksize; |
58a3a76c |
880 | #ifdef HPUX1020 |
881 | stacksize = pthread_attr_getstacksize(attr); |
882 | #else |
883 | if (! pthread_attr_getstacksize(&attr, &stacksize)) |
884 | #endif |
885 | if (stacksize > 0) { |
514612b7 |
886 | thread->stack_size = (IV)stacksize; |
887 | } |
514612b7 |
888 | } |
889 | # endif |
fc04eb16 |
890 | } |
82c40bf6 |
891 | #endif |
bcd9ca9b |
892 | |
fc04eb16 |
893 | /* Check for errors */ |
d94006e8 |
894 | #ifdef WIN32 |
fc04eb16 |
895 | if (thread->handle == NULL) { |
d94006e8 |
896 | #else |
fc04eb16 |
897 | if (rc_stack_size || rc_thread_create) { |
d94006e8 |
898 | #endif |
9ca4d7fd |
899 | /* Must unlock mutex for destruct call */ |
5c6ff896 |
900 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
901 | sv_2mortal(params); |
adc09a0e |
902 | thread->state |= PERL_ITHR_NONVIABLE; |
6ebc233e |
903 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
d94006e8 |
904 | #ifndef WIN32 |
514612b7 |
905 | if (ckWARN_d(WARN_THREADS)) { |
fea7688c |
906 | if (rc_stack_size) { |
514612b7 |
907 | Perl_warn(aTHX_ "Thread creation failed: pthread_attr_setstacksize(%" IVdf ") returned %d", thread->stack_size, rc_stack_size); |
fea7688c |
908 | } else { |
514612b7 |
909 | Perl_warn(aTHX_ "Thread creation failed: pthread_create returned %d", rc_thread_create); |
fea7688c |
910 | } |
514612b7 |
911 | } |
d94006e8 |
912 | #endif |
9ca4d7fd |
913 | return (NULL); |
fc04eb16 |
914 | } |
915 | |
5c6ff896 |
916 | MY_POOL.running_threads++; |
fc04eb16 |
917 | sv_2mortal(params); |
9ca4d7fd |
918 | return (thread); |
68795e93 |
919 | } |
47ba8780 |
920 | |
73e09c8f |
921 | #endif /* USE_ITHREADS */ |
e1c44605 |
922 | |
fcea4b7c |
923 | |
fc04eb16 |
924 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
68795e93 |
925 | PROTOTYPES: DISABLE |
8222d950 |
926 | |
73e09c8f |
927 | #ifdef USE_ITHREADS |
928 | |
68795e93 |
929 | void |
f4cc38af |
930 | ithread_create(...) |
931 | PREINIT: |
932 | char *classname; |
514612b7 |
933 | ithread *thread; |
f4cc38af |
934 | SV *function_to_call; |
935 | AV *params; |
514612b7 |
936 | HV *specs; |
937 | IV stack_size; |
9d9ff5b1 |
938 | int context; |
69a9b4b8 |
939 | int exit_opt; |
940 | SV *thread_exit_only; |
9d9ff5b1 |
941 | char *str; |
514612b7 |
942 | int idx; |
f4cc38af |
943 | int ii; |
5c6ff896 |
944 | dMY_POOL; |
f4cc38af |
945 | CODE: |
514612b7 |
946 | if ((items >= 2) && SvROK(ST(1)) && SvTYPE(SvRV(ST(1)))==SVt_PVHV) { |
fea7688c |
947 | if (--items < 2) { |
18b9e6f5 |
948 | Perl_croak(aTHX_ "Usage: threads->create(\\%%specs, function, ...)"); |
fea7688c |
949 | } |
514612b7 |
950 | specs = (HV*)SvRV(ST(1)); |
951 | idx = 1; |
952 | } else { |
fea7688c |
953 | if (items < 2) { |
514612b7 |
954 | Perl_croak(aTHX_ "Usage: threads->create(function, ...)"); |
fea7688c |
955 | } |
514612b7 |
956 | specs = NULL; |
957 | idx = 0; |
958 | } |
f4cc38af |
959 | |
514612b7 |
960 | if (sv_isobject(ST(0))) { |
961 | /* $thr->create() */ |
962 | classname = HvNAME(SvSTASH(SvRV(ST(0)))); |
963 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
964 | MUTEX_LOCK(&thread->mutex); |
514612b7 |
965 | stack_size = thread->stack_size; |
69a9b4b8 |
966 | exit_opt = thread->state & PERL_ITHR_THREAD_EXIT_ONLY; |
8718f9a1 |
967 | MUTEX_UNLOCK(&thread->mutex); |
514612b7 |
968 | } else { |
969 | /* threads->create() */ |
970 | classname = (char *)SvPV_nolen(ST(0)); |
5c6ff896 |
971 | stack_size = MY_POOL.default_stack_size; |
8583b257 |
972 | thread_exit_only = get_sv("threads::thread_exit_only", GV_ADD); |
69a9b4b8 |
973 | exit_opt = (SvTRUE(thread_exit_only)) |
974 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
514612b7 |
975 | } |
976 | |
977 | function_to_call = ST(idx+1); |
978 | |
9d9ff5b1 |
979 | context = -1; |
514612b7 |
980 | if (specs) { |
981 | /* stack_size */ |
982 | if (hv_exists(specs, "stack", 5)) { |
983 | stack_size = SvIV(*hv_fetch(specs, "stack", 5, 0)); |
984 | } else if (hv_exists(specs, "stacksize", 9)) { |
985 | stack_size = SvIV(*hv_fetch(specs, "stacksize", 9, 0)); |
986 | } else if (hv_exists(specs, "stack_size", 10)) { |
987 | stack_size = SvIV(*hv_fetch(specs, "stack_size", 10, 0)); |
988 | } |
9d9ff5b1 |
989 | |
990 | /* context */ |
991 | if (hv_exists(specs, "context", 7)) { |
992 | str = (char *)SvPV_nolen(*hv_fetch(specs, "context", 7, 0)); |
993 | switch (*str) { |
994 | case 'a': |
995 | case 'A': |
da140a40 |
996 | case 'l': |
997 | case 'L': |
9d9ff5b1 |
998 | context = G_ARRAY; |
999 | break; |
1000 | case 's': |
1001 | case 'S': |
1002 | context = G_SCALAR; |
1003 | break; |
1004 | case 'v': |
1005 | case 'V': |
1006 | context = G_VOID; |
1007 | break; |
1008 | default: |
1009 | Perl_croak(aTHX_ "Invalid context: %s", str); |
1010 | } |
1011 | } else if (hv_exists(specs, "array", 5)) { |
1012 | if (SvTRUE(*hv_fetch(specs, "array", 5, 0))) { |
1013 | context = G_ARRAY; |
1014 | } |
da140a40 |
1015 | } else if (hv_exists(specs, "list", 4)) { |
1016 | if (SvTRUE(*hv_fetch(specs, "list", 4, 0))) { |
1017 | context = G_ARRAY; |
1018 | } |
9d9ff5b1 |
1019 | } else if (hv_exists(specs, "scalar", 6)) { |
1020 | if (SvTRUE(*hv_fetch(specs, "scalar", 6, 0))) { |
1021 | context = G_SCALAR; |
1022 | } |
1023 | } else if (hv_exists(specs, "void", 4)) { |
1024 | if (SvTRUE(*hv_fetch(specs, "void", 4, 0))) { |
1025 | context = G_VOID; |
1026 | } |
1027 | } |
69a9b4b8 |
1028 | |
1029 | /* exit => thread_only */ |
1030 | if (hv_exists(specs, "exit", 4)) { |
1031 | str = (char *)SvPV_nolen(*hv_fetch(specs, "exit", 4, 0)); |
1032 | exit_opt = (*str == 't' || *str == 'T') |
1033 | ? PERL_ITHR_THREAD_EXIT_ONLY : 0; |
1034 | } |
9d9ff5b1 |
1035 | } |
1036 | if (context == -1) { |
1037 | context = GIMME_V; /* Implicit context */ |
1038 | } else { |
1039 | context |= (GIMME_V & (~(G_ARRAY|G_SCALAR|G_VOID))); |
514612b7 |
1040 | } |
f4cc38af |
1041 | |
1042 | /* Function args */ |
1043 | params = newAV(); |
1044 | if (items > 2) { |
514612b7 |
1045 | for (ii=2; ii < items ; ii++) { |
1046 | av_push(params, SvREFCNT_inc(ST(idx+ii))); |
f4cc38af |
1047 | } |
1048 | } |
1049 | |
1050 | /* Create thread */ |
5c6ff896 |
1051 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1052 | thread = S_ithread_create(aTHX_ function_to_call, |
1053 | stack_size, |
1054 | context, |
1055 | exit_opt, |
1056 | newRV_noinc((SV*)params)); |
1057 | if (! thread) { |
1058 | XSRETURN_UNDEF; /* Mutex already unlocked */ |
1059 | } |
861d5cbe |
1060 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, FALSE)); |
adc09a0e |
1061 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1062 | |
1063 | /* Let thread run */ |
1064 | MUTEX_UNLOCK(&thread->mutex); |
9ca4d7fd |
1065 | |
f4cc38af |
1066 | /* XSRETURN(1); - implied */ |
1067 | |
8222d950 |
1068 | |
68795e93 |
1069 | void |
f4cc38af |
1070 | ithread_list(...) |
1071 | PREINIT: |
1072 | char *classname; |
fc04eb16 |
1073 | ithread *thread; |
f4cc38af |
1074 | int list_context; |
1075 | IV count = 0; |
11db694d |
1076 | int want_running = 0; |
8718f9a1 |
1077 | int state; |
5c6ff896 |
1078 | dMY_POOL; |
f4cc38af |
1079 | PPCODE: |
1080 | /* Class method only */ |
fea7688c |
1081 | if (SvROK(ST(0))) { |
ead32952 |
1082 | Perl_croak(aTHX_ "Usage: threads->list(...)"); |
fea7688c |
1083 | } |
f4cc38af |
1084 | classname = (char *)SvPV_nolen(ST(0)); |
1085 | |
1086 | /* Calling context */ |
1087 | list_context = (GIMME_V == G_ARRAY); |
1088 | |
ead32952 |
1089 | /* Running or joinable parameter */ |
1090 | if (items > 1) { |
1091 | want_running = SvTRUE(ST(1)); |
1092 | } |
1093 | |
f4cc38af |
1094 | /* Walk through threads list */ |
5c6ff896 |
1095 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1096 | for (thread = MY_POOL.main_thread.next; |
1097 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1098 | thread = thread->next) |
f4cc38af |
1099 | { |
8718f9a1 |
1100 | MUTEX_LOCK(&thread->mutex); |
1101 | state = thread->state; |
1102 | MUTEX_UNLOCK(&thread->mutex); |
1103 | |
f4cc38af |
1104 | /* Ignore detached or joined threads */ |
8718f9a1 |
1105 | if (state & PERL_ITHR_UNCALLABLE) { |
f4cc38af |
1106 | continue; |
1107 | } |
ead32952 |
1108 | |
1109 | /* Filter per parameter */ |
1110 | if (items > 1) { |
1111 | if (want_running) { |
8718f9a1 |
1112 | if (state & PERL_ITHR_FINISHED) { |
ead32952 |
1113 | continue; /* Not running */ |
1114 | } |
1115 | } else { |
8718f9a1 |
1116 | if (! (state & PERL_ITHR_FINISHED)) { |
ead32952 |
1117 | continue; /* Still running - not joinable yet */ |
1118 | } |
1119 | } |
1120 | } |
1121 | |
f4cc38af |
1122 | /* Push object on stack if list context */ |
1123 | if (list_context) { |
861d5cbe |
1124 | XPUSHs(sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE))); |
f4cc38af |
1125 | } |
1126 | count++; |
1127 | } |
5c6ff896 |
1128 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
f4cc38af |
1129 | /* If scalar context, send back count */ |
1130 | if (! list_context) { |
1131 | XSRETURN_IV(count); |
1132 | } |
678a9b6c |
1133 | |
1134 | |
1135 | void |
f4cc38af |
1136 | ithread_self(...) |
1137 | PREINIT: |
1138 | char *classname; |
fcea4b7c |
1139 | ithread *thread; |
f4cc38af |
1140 | CODE: |
1141 | /* Class method only */ |
11db694d |
1142 | if ((items != 1) || SvROK(ST(0))) { |
f4cc38af |
1143 | Perl_croak(aTHX_ "Usage: threads->self()"); |
fea7688c |
1144 | } |
f4cc38af |
1145 | classname = (char *)SvPV_nolen(ST(0)); |
1146 | |
fcea4b7c |
1147 | thread = S_ithread_get(aTHX); |
1148 | |
861d5cbe |
1149 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
f4cc38af |
1150 | /* XSRETURN(1); - implied */ |
47ba8780 |
1151 | |
47ba8780 |
1152 | |
1153 | void |
f4cc38af |
1154 | ithread_tid(...) |
1155 | PREINIT: |
1156 | ithread *thread; |
1157 | CODE: |
11db694d |
1158 | PERL_UNUSED_VAR(items); |
861d5cbe |
1159 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1160 | XST_mUV(0, thread->tid); |
1161 | /* XSRETURN(1); - implied */ |
1162 | |
e1c44605 |
1163 | |
f9dff5f5 |
1164 | void |
f4cc38af |
1165 | ithread_join(...) |
1166 | PREINIT: |
fcea4b7c |
1167 | ithread *thread; |
8718f9a1 |
1168 | ithread *current_thread; |
fcea4b7c |
1169 | int join_err; |
6ebc233e |
1170 | AV *params = NULL; |
f4cc38af |
1171 | int len; |
1172 | int ii; |
12701bb8 |
1173 | #ifndef WIN32 |
8718f9a1 |
1174 | int rc_join; |
fcea4b7c |
1175 | void *retval; |
1176 | #endif |
5c6ff896 |
1177 | dMY_POOL; |
f4cc38af |
1178 | PPCODE: |
1179 | /* Object method only */ |
11db694d |
1180 | if ((items != 1) || ! sv_isobject(ST(0))) { |
f4cc38af |
1181 | Perl_croak(aTHX_ "Usage: $thr->join()"); |
fea7688c |
1182 | } |
f4cc38af |
1183 | |
8718f9a1 |
1184 | /* Check if the thread is joinable and not ourselves */ |
861d5cbe |
1185 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1186 | current_thread = S_ithread_get(aTHX); |
1187 | |
1188 | MUTEX_LOCK(&thread->mutex); |
1189 | if ((join_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1190 | MUTEX_UNLOCK(&thread->mutex); |
1191 | Perl_croak(aTHX_ (join_err & PERL_ITHR_DETACHED) |
1192 | ? "Cannot join a detached thread" |
1193 | : "Thread already joined"); |
1194 | } else if (thread->tid == current_thread->tid) { |
1195 | MUTEX_UNLOCK(&thread->mutex); |
1196 | Perl_croak(aTHX_ "Cannot join self"); |
fcea4b7c |
1197 | } |
1198 | |
8718f9a1 |
1199 | /* Mark as joined */ |
1200 | thread->state |= PERL_ITHR_JOINED; |
1201 | MUTEX_UNLOCK(&thread->mutex); |
1202 | |
1203 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1204 | MY_POOL.joinable_threads--; |
1205 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
1206 | |
fcea4b7c |
1207 | /* Join the thread */ |
1208 | #ifdef WIN32 |
8718f9a1 |
1209 | if (WaitForSingleObject(thread->handle, INFINITE) != WAIT_OBJECT_0) { |
1210 | /* Timeout/abandonment unexpected here; check $^E */ |
1211 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1212 | }; |
fcea4b7c |
1213 | #else |
8718f9a1 |
1214 | if ((rc_join = pthread_join(thread->thr, &retval)) != 0) { |
1215 | /* In progress/deadlock/unknown unexpected here; check $! */ |
1216 | errno = rc_join; |
1217 | Perl_croak(aTHX_ "PANIC: underlying join failed"); |
1218 | }; |
fcea4b7c |
1219 | #endif |
1220 | |
1221 | MUTEX_LOCK(&thread->mutex); |
fcea4b7c |
1222 | /* Get the return value from the call_sv */ |
955c272e |
1223 | /* Objects do not survive this process - FIXME */ |
7df0357e |
1224 | if ((thread->gimme & G_WANT) != G_VOID) { |
fcea4b7c |
1225 | AV *params_copy; |
1226 | PerlInterpreter *other_perl; |
1227 | CLONE_PARAMS clone_params; |
fcea4b7c |
1228 | |
1229 | params_copy = (AV *)SvRV(thread->params); |
1230 | other_perl = thread->interp; |
1231 | clone_params.stashes = newAV(); |
1232 | clone_params.flags = CLONEf_JOIN_IN; |
1233 | PL_ptr_table = ptr_table_new(); |
fcea4b7c |
1234 | S_ithread_set(aTHX_ thread); |
1235 | /* Ensure 'meaningful' addresses retain their meaning */ |
1236 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1237 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1238 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1239 | params = (AV *)sv_dup((SV*)params_copy, &clone_params); |
1240 | S_ithread_set(aTHX_ current_thread); |
1241 | SvREFCNT_dec(clone_params.stashes); |
d4315dd6 |
1242 | SvREFCNT_inc_void(params); |
fcea4b7c |
1243 | ptr_table_free(PL_ptr_table); |
1244 | PL_ptr_table = NULL; |
1245 | } |
1246 | |
955c272e |
1247 | /* If thread didn't die, then we can free its interpreter */ |
1248 | if (! (thread->state & PERL_ITHR_DIED)) { |
1249 | S_ithread_clear(aTHX_ thread); |
1250 | } |
6ebc233e |
1251 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
955c272e |
1252 | |
fcea4b7c |
1253 | /* If no return values, then just return */ |
f4cc38af |
1254 | if (! params) { |
1255 | XSRETURN_UNDEF; |
1256 | } |
1257 | |
1258 | /* Put return values on stack */ |
1259 | len = (int)AvFILL(params); |
1260 | for (ii=0; ii <= len; ii++) { |
1261 | SV* param = av_shift(params); |
1262 | XPUSHs(sv_2mortal(param)); |
1263 | } |
1264 | |
1265 | /* Free return value array */ |
1266 | SvREFCNT_dec(params); |
1267 | |
1268 | |
1269 | void |
1270 | ithread_yield(...) |
1271 | CODE: |
11db694d |
1272 | PERL_UNUSED_VAR(items); |
f4cc38af |
1273 | YIELD; |
1274 | |
1275 | |
1276 | void |
1277 | ithread_detach(...) |
1278 | PREINIT: |
1279 | ithread *thread; |
fcea4b7c |
1280 | int detach_err; |
5c6ff896 |
1281 | dMY_POOL; |
f4cc38af |
1282 | CODE: |
11db694d |
1283 | PERL_UNUSED_VAR(items); |
1284 | |
fcea4b7c |
1285 | /* Detach the thread */ |
8718f9a1 |
1286 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
5c6ff896 |
1287 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1288 | MUTEX_LOCK(&thread->mutex); |
8718f9a1 |
1289 | if (! (detach_err = (thread->state & PERL_ITHR_UNCALLABLE))) { |
1290 | /* Thread is detachable */ |
1291 | thread->state |= PERL_ITHR_DETACHED; |
fcea4b7c |
1292 | #ifdef WIN32 |
8718f9a1 |
1293 | /* Windows has no 'detach thread' function */ |
fcea4b7c |
1294 | #else |
8718f9a1 |
1295 | PERL_THREAD_DETACH(thread->thr); |
fcea4b7c |
1296 | #endif |
8718f9a1 |
1297 | if (thread->state & PERL_ITHR_FINISHED) { |
1298 | MY_POOL.joinable_threads--; |
1299 | } else { |
1300 | MY_POOL.running_threads--; |
1301 | MY_POOL.detached_threads++; |
1302 | } |
4dcb9e53 |
1303 | } |
adc09a0e |
1304 | MUTEX_UNLOCK(&thread->mutex); |
5c6ff896 |
1305 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
4dcb9e53 |
1306 | |
8718f9a1 |
1307 | if (detach_err) { |
1308 | Perl_croak(aTHX_ (detach_err & PERL_ITHR_DETACHED) |
1309 | ? "Thread already detached" |
1310 | : "Cannot detach a joined thread"); |
1311 | } |
1312 | |
955c272e |
1313 | /* If thread is finished and didn't die, |
1314 | * then we can free its interpreter */ |
1315 | MUTEX_LOCK(&thread->mutex); |
1316 | if ((thread->state & PERL_ITHR_FINISHED) && |
1317 | ! (thread->state & PERL_ITHR_DIED)) |
1318 | { |
1319 | S_ithread_clear(aTHX_ thread); |
1320 | } |
6ebc233e |
1321 | S_ithread_free(aTHX_ thread); /* Releases MUTEX */ |
f4cc38af |
1322 | |
47ba8780 |
1323 | |
1324 | void |
c0003851 |
1325 | ithread_kill(...) |
1326 | PREINIT: |
1327 | ithread *thread; |
1328 | char *sig_name; |
1329 | IV signal; |
1330 | CODE: |
1331 | /* Must have safe signals */ |
fea7688c |
1332 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) { |
4dcb9e53 |
1333 | Perl_croak(aTHX_ "Cannot signal threads without safe signals"); |
fea7688c |
1334 | } |
c0003851 |
1335 | |
1336 | /* Object method only */ |
11db694d |
1337 | if ((items != 2) || ! sv_isobject(ST(0))) { |
c0003851 |
1338 | Perl_croak(aTHX_ "Usage: $thr->kill('SIG...')"); |
fea7688c |
1339 | } |
c0003851 |
1340 | |
c0003851 |
1341 | /* Get signal */ |
1342 | sig_name = SvPV_nolen(ST(1)); |
1343 | if (isALPHA(*sig_name)) { |
fea7688c |
1344 | if (*sig_name == 'S' && sig_name[1] == 'I' && sig_name[2] == 'G') { |
c0003851 |
1345 | sig_name += 3; |
fea7688c |
1346 | } |
1347 | if ((signal = whichsig(sig_name)) < 0) { |
c0003851 |
1348 | Perl_croak(aTHX_ "Unrecognized signal name: %s", sig_name); |
fea7688c |
1349 | } |
1350 | } else { |
c0003851 |
1351 | signal = SvIV(ST(1)); |
fea7688c |
1352 | } |
c0003851 |
1353 | |
1354 | /* Set the signal for the thread */ |
861d5cbe |
1355 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
4dcb9e53 |
1356 | MUTEX_LOCK(&thread->mutex); |
3ceb02cd |
1357 | if (thread->interp) { |
c0003851 |
1358 | dTHXa(thread->interp); |
1359 | PL_psig_pend[signal]++; |
1360 | PL_sig_pending = 1; |
1361 | } |
4dcb9e53 |
1362 | MUTEX_UNLOCK(&thread->mutex); |
c0003851 |
1363 | |
1364 | /* Return the thread to allow for method chaining */ |
1365 | ST(0) = ST(0); |
1366 | /* XSRETURN(1); - implied */ |
1367 | |
1368 | |
1369 | void |
f4cc38af |
1370 | ithread_DESTROY(...) |
1371 | CODE: |
11db694d |
1372 | PERL_UNUSED_VAR(items); |
fcea4b7c |
1373 | sv_unmagic(SvRV(ST(0)), PERL_MAGIC_shared_scalar); |
f4cc38af |
1374 | |
1375 | |
1376 | void |
1377 | ithread_equal(...) |
fc04eb16 |
1378 | PREINIT: |
1379 | int are_equal = 0; |
f4cc38af |
1380 | CODE: |
11db694d |
1381 | PERL_UNUSED_VAR(items); |
1382 | |
fc04eb16 |
1383 | /* Compares TIDs to determine thread equality */ |
f4cc38af |
1384 | if (sv_isobject(ST(0)) && sv_isobject(ST(1))) { |
1385 | ithread *thr1 = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1386 | ithread *thr2 = INT2PTR(ithread *, SvIV(SvRV(ST(1)))); |
fc04eb16 |
1387 | are_equal = (thr1->tid == thr2->tid); |
1388 | } |
1389 | if (are_equal) { |
1390 | XST_mYES(0); |
f4cc38af |
1391 | } else { |
fc04eb16 |
1392 | /* Return 0 on false for backward compatibility */ |
f4cc38af |
1393 | XST_mIV(0, 0); |
1394 | } |
1395 | /* XSRETURN(1); - implied */ |
1396 | |
47ba8780 |
1397 | |
47ba8780 |
1398 | void |
f4cc38af |
1399 | ithread_object(...) |
1400 | PREINIT: |
1401 | char *classname; |
1402 | UV tid; |
fc04eb16 |
1403 | ithread *thread; |
8718f9a1 |
1404 | int state; |
9ca4d7fd |
1405 | int have_obj = 0; |
5c6ff896 |
1406 | dMY_POOL; |
f4cc38af |
1407 | CODE: |
1408 | /* Class method only */ |
fea7688c |
1409 | if (SvROK(ST(0))) { |
f4cc38af |
1410 | Perl_croak(aTHX_ "Usage: threads->object($tid)"); |
fea7688c |
1411 | } |
f4cc38af |
1412 | classname = (char *)SvPV_nolen(ST(0)); |
1413 | |
1414 | if ((items < 2) || ! SvOK(ST(1))) { |
1415 | XSRETURN_UNDEF; |
1416 | } |
1417 | |
fc04eb16 |
1418 | /* threads->object($tid) */ |
f4cc38af |
1419 | tid = SvUV(ST(1)); |
1420 | |
1421 | /* Walk through threads list */ |
5c6ff896 |
1422 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
1423 | for (thread = MY_POOL.main_thread.next; |
1424 | thread != &MY_POOL.main_thread; |
fc04eb16 |
1425 | thread = thread->next) |
f4cc38af |
1426 | { |
9ca4d7fd |
1427 | /* Look for TID */ |
1428 | if (thread->tid == tid) { |
1429 | /* Ignore if detached or joined */ |
8718f9a1 |
1430 | MUTEX_LOCK(&thread->mutex); |
1431 | state = thread->state; |
1432 | MUTEX_UNLOCK(&thread->mutex); |
1433 | if (! (state & PERL_ITHR_UNCALLABLE)) { |
9ca4d7fd |
1434 | /* Put object on stack */ |
861d5cbe |
1435 | ST(0) = sv_2mortal(S_ithread_to_SV(aTHX_ Nullsv, thread, classname, TRUE)); |
9ca4d7fd |
1436 | have_obj = 1; |
1437 | } |
1438 | break; |
f4cc38af |
1439 | } |
f4cc38af |
1440 | } |
5c6ff896 |
1441 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
9ca4d7fd |
1442 | |
1443 | if (! have_obj) { |
f4cc38af |
1444 | XSRETURN_UNDEF; |
1445 | } |
1446 | /* XSRETURN(1); - implied */ |
1447 | |
1448 | |
1449 | void |
1450 | ithread__handle(...); |
1451 | PREINIT: |
1452 | ithread *thread; |
1453 | CODE: |
11db694d |
1454 | PERL_UNUSED_VAR(items); |
861d5cbe |
1455 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
f4cc38af |
1456 | #ifdef WIN32 |
fcea4b7c |
1457 | XST_mUV(0, PTR2UV(&thread->handle)); |
f4cc38af |
1458 | #else |
75ba4ae2 |
1459 | XST_mUV(0, PTR2UV(&thread->thr)); |
f4cc38af |
1460 | #endif |
1461 | /* XSRETURN(1); - implied */ |
68795e93 |
1462 | |
514612b7 |
1463 | |
1464 | void |
1465 | ithread_get_stack_size(...) |
1466 | PREINIT: |
1467 | IV stack_size; |
5c6ff896 |
1468 | dMY_POOL; |
514612b7 |
1469 | CODE: |
11db694d |
1470 | PERL_UNUSED_VAR(items); |
514612b7 |
1471 | if (sv_isobject(ST(0))) { |
1472 | /* $thr->get_stack_size() */ |
1473 | ithread *thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1474 | stack_size = thread->stack_size; |
1475 | } else { |
1476 | /* threads->get_stack_size() */ |
5c6ff896 |
1477 | stack_size = MY_POOL.default_stack_size; |
514612b7 |
1478 | } |
1479 | XST_mIV(0, stack_size); |
1480 | /* XSRETURN(1); - implied */ |
1481 | |
1482 | |
1483 | void |
1484 | ithread_set_stack_size(...) |
1485 | PREINIT: |
1486 | IV old_size; |
5c6ff896 |
1487 | dMY_POOL; |
514612b7 |
1488 | CODE: |
fea7688c |
1489 | if (items != 2) { |
514612b7 |
1490 | Perl_croak(aTHX_ "Usage: threads->set_stack_size($size)"); |
fea7688c |
1491 | } |
1492 | if (sv_isobject(ST(0))) { |
514612b7 |
1493 | Perl_croak(aTHX_ "Cannot change stack size of an existing thread"); |
fea7688c |
1494 | } |
6ebc233e |
1495 | if (! looks_like_number(ST(1))) { |
1496 | Perl_croak(aTHX_ "Stack size must be numeric"); |
1497 | } |
514612b7 |
1498 | |
5c6ff896 |
1499 | old_size = MY_POOL.default_stack_size; |
1500 | MY_POOL.default_stack_size = S_good_stack_size(aTHX_ SvIV(ST(1))); |
514612b7 |
1501 | XST_mIV(0, old_size); |
1502 | /* XSRETURN(1); - implied */ |
1503 | |
ead32952 |
1504 | |
1505 | void |
1506 | ithread_is_running(...) |
1507 | PREINIT: |
1508 | ithread *thread; |
1509 | CODE: |
1510 | /* Object method only */ |
11db694d |
1511 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1512 | Perl_croak(aTHX_ "Usage: $thr->is_running()"); |
fea7688c |
1513 | } |
ead32952 |
1514 | |
1515 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
8718f9a1 |
1516 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1517 | ST(0) = (thread->state & PERL_ITHR_FINISHED) ? &PL_sv_no : &PL_sv_yes; |
8718f9a1 |
1518 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1519 | /* XSRETURN(1); - implied */ |
1520 | |
1521 | |
1522 | void |
1523 | ithread_is_detached(...) |
1524 | PREINIT: |
1525 | ithread *thread; |
1526 | CODE: |
11db694d |
1527 | PERL_UNUSED_VAR(items); |
861d5cbe |
1528 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
8718f9a1 |
1529 | MUTEX_LOCK(&thread->mutex); |
ead32952 |
1530 | ST(0) = (thread->state & PERL_ITHR_DETACHED) ? &PL_sv_yes : &PL_sv_no; |
8718f9a1 |
1531 | MUTEX_UNLOCK(&thread->mutex); |
ead32952 |
1532 | /* XSRETURN(1); - implied */ |
1533 | |
1534 | |
1535 | void |
1536 | ithread_is_joinable(...) |
1537 | PREINIT: |
1538 | ithread *thread; |
1539 | CODE: |
1540 | /* Object method only */ |
11db694d |
1541 | if ((items != 1) || ! sv_isobject(ST(0))) { |
ead32952 |
1542 | Perl_croak(aTHX_ "Usage: $thr->is_joinable()"); |
fea7688c |
1543 | } |
ead32952 |
1544 | |
1545 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1546 | MUTEX_LOCK(&thread->mutex); |
1547 | ST(0) = ((thread->state & PERL_ITHR_FINISHED) && |
8718f9a1 |
1548 | ! (thread->state & PERL_ITHR_UNCALLABLE)) |
ead32952 |
1549 | ? &PL_sv_yes : &PL_sv_no; |
1550 | MUTEX_UNLOCK(&thread->mutex); |
1551 | /* XSRETURN(1); - implied */ |
1552 | |
1553 | |
1554 | void |
1555 | ithread_wantarray(...) |
1556 | PREINIT: |
1557 | ithread *thread; |
1558 | CODE: |
11db694d |
1559 | PERL_UNUSED_VAR(items); |
861d5cbe |
1560 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
7df0357e |
1561 | ST(0) = ((thread->gimme & G_WANT) == G_ARRAY) ? &PL_sv_yes : |
1562 | ((thread->gimme & G_WANT) == G_VOID) ? &PL_sv_undef |
7ef93cb2 |
1563 | /* G_SCALAR */ : &PL_sv_no; |
ead32952 |
1564 | /* XSRETURN(1); - implied */ |
1565 | |
69a9b4b8 |
1566 | |
1567 | void |
1568 | ithread_set_thread_exit_only(...) |
1569 | PREINIT: |
1570 | ithread *thread; |
1571 | CODE: |
fea7688c |
1572 | if (items != 2) { |
69a9b4b8 |
1573 | Perl_croak(aTHX_ "Usage: ->set_thread_exit_only(boolean)"); |
fea7688c |
1574 | } |
861d5cbe |
1575 | thread = S_SV_to_ithread(aTHX_ ST(0)); |
69a9b4b8 |
1576 | MUTEX_LOCK(&thread->mutex); |
1577 | if (SvTRUE(ST(1))) { |
1578 | thread->state |= PERL_ITHR_THREAD_EXIT_ONLY; |
1579 | } else { |
1580 | thread->state &= ~PERL_ITHR_THREAD_EXIT_ONLY; |
1581 | } |
1582 | MUTEX_UNLOCK(&thread->mutex); |
1583 | |
955c272e |
1584 | |
1585 | void |
1586 | ithread_error(...) |
1587 | PREINIT: |
1588 | ithread *thread; |
1589 | SV *err = NULL; |
1590 | CODE: |
1591 | /* Object method only */ |
1592 | if ((items != 1) || ! sv_isobject(ST(0))) { |
1593 | Perl_croak(aTHX_ "Usage: $thr->err()"); |
1594 | } |
1595 | |
1596 | thread = INT2PTR(ithread *, SvIV(SvRV(ST(0)))); |
1597 | MUTEX_LOCK(&thread->mutex); |
1598 | |
1599 | /* If thread died, then clone the error into the calling thread */ |
1600 | if (thread->state & PERL_ITHR_DIED) { |
1601 | PerlInterpreter *other_perl; |
1602 | CLONE_PARAMS clone_params; |
1603 | ithread *current_thread; |
1604 | |
1605 | other_perl = thread->interp; |
1606 | clone_params.stashes = newAV(); |
1607 | clone_params.flags = CLONEf_JOIN_IN; |
1608 | PL_ptr_table = ptr_table_new(); |
1609 | current_thread = S_ithread_get(aTHX); |
1610 | S_ithread_set(aTHX_ thread); |
1611 | /* Ensure 'meaningful' addresses retain their meaning */ |
1612 | ptr_table_store(PL_ptr_table, &other_perl->Isv_undef, &PL_sv_undef); |
1613 | ptr_table_store(PL_ptr_table, &other_perl->Isv_no, &PL_sv_no); |
1614 | ptr_table_store(PL_ptr_table, &other_perl->Isv_yes, &PL_sv_yes); |
1615 | err = sv_dup(thread->err, &clone_params); |
1616 | S_ithread_set(aTHX_ current_thread); |
1617 | SvREFCNT_dec(clone_params.stashes); |
1618 | SvREFCNT_inc_void(err); |
1619 | /* If error was an object, bless it into the correct class */ |
1620 | if (thread->err_class) { |
1621 | sv_bless(err, gv_stashpv(thread->err_class, 1)); |
1622 | } |
1623 | ptr_table_free(PL_ptr_table); |
1624 | PL_ptr_table = NULL; |
1625 | } |
1626 | |
1627 | MUTEX_UNLOCK(&thread->mutex); |
1628 | |
1629 | if (! err) { |
1630 | XSRETURN_UNDEF; |
1631 | } |
1632 | |
1633 | ST(0) = sv_2mortal(err); |
1634 | /* XSRETURN(1); - implied */ |
1635 | |
1636 | |
73e09c8f |
1637 | #endif /* USE_ITHREADS */ |
1638 | |
fc04eb16 |
1639 | |
68795e93 |
1640 | BOOT: |
1641 | { |
73e09c8f |
1642 | #ifdef USE_ITHREADS |
5c6ff896 |
1643 | SV *my_pool_sv = *hv_fetch(PL_modglobal, MY_POOL_KEY, |
1644 | sizeof(MY_POOL_KEY)-1, TRUE); |
1645 | my_pool_t *my_poolp = (my_pool_t*)SvPVX(newSV(sizeof(my_pool_t)-1)); |
1646 | |
fc04eb16 |
1647 | MY_CXT_INIT; |
1648 | |
5c6ff896 |
1649 | Zero(my_poolp, 1, my_pool_t); |
1650 | sv_setuv(my_pool_sv, PTR2UV(my_poolp)); |
1651 | |
fc04eb16 |
1652 | PL_perl_destruct_level = 2; |
5c6ff896 |
1653 | MUTEX_INIT(&MY_POOL.create_destruct_mutex); |
1654 | MUTEX_LOCK(&MY_POOL.create_destruct_mutex); |
fc04eb16 |
1655 | |
1656 | PL_threadhook = &Perl_ithread_hook; |
1657 | |
5c6ff896 |
1658 | MY_POOL.tid_counter = 1; |
1659 | # ifdef THREAD_CREATE_NEEDS_STACK |
1660 | MY_POOL.default_stack_size = THREAD_CREATE_NEEDS_STACK; |
1661 | # endif |
1662 | |
c372d929 |
1663 | /* The 'main' thread is thread 0. |
1664 | * It is detached (unjoinable) and immortal. |
1665 | */ |
fc04eb16 |
1666 | |
5c6ff896 |
1667 | MUTEX_INIT(&MY_POOL.main_thread.mutex); |
fc04eb16 |
1668 | |
1669 | /* Head of the threads list */ |
5c6ff896 |
1670 | MY_POOL.main_thread.next = &MY_POOL.main_thread; |
1671 | MY_POOL.main_thread.prev = &MY_POOL.main_thread; |
fc04eb16 |
1672 | |
5c6ff896 |
1673 | MY_POOL.main_thread.count = 1; /* Immortal */ |
fc04eb16 |
1674 | |
5c6ff896 |
1675 | MY_POOL.main_thread.interp = aTHX; |
1676 | MY_POOL.main_thread.state = PERL_ITHR_DETACHED; /* Detached */ |
1677 | MY_POOL.main_thread.stack_size = MY_POOL.default_stack_size; |
fc04eb16 |
1678 | # ifdef WIN32 |
5c6ff896 |
1679 | MY_POOL.main_thread.thr = GetCurrentThreadId(); |
fc04eb16 |
1680 | # else |
5c6ff896 |
1681 | MY_POOL.main_thread.thr = pthread_self(); |
fc04eb16 |
1682 | # endif |
1683 | |
5c6ff896 |
1684 | S_ithread_set(aTHX_ &MY_POOL.main_thread); |
1685 | MUTEX_UNLOCK(&MY_POOL.create_destruct_mutex); |
73e09c8f |
1686 | #endif /* USE_ITHREADS */ |
68795e93 |
1687 | } |