Commit | Line | Data |
d9bb3666 |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
4 | |
7d901afa |
5 | /* Magic signature for Thread's mg_private is "Th" */ |
6 | #define Thread_MAGIC_SIGNATURE 0x5468 |
7 | |
f0f333f4 |
8 | #ifdef __cplusplus |
9 | #ifdef I_UNISTD |
10 | #include <unistd.h> |
11 | #endif |
12 | #endif |
13 | #include <fcntl.h> |
14 | |
7d901afa |
15 | static U32 threadnum = 0; |
85ced67f |
16 | static int sig_pipe[2]; |
f0f333f4 |
17 | |
18 | #ifndef THREAD_RET_TYPE |
19 | typedef struct thread *Thread; |
20 | #define THREAD_RET_TYPE void * |
21 | #define THREAD_RET_CAST(x) ((THREAD_RET_TYPE) x) |
458fb581 |
22 | #endif |
683929b4 |
23 | |
7d901afa |
24 | static void |
f0f333f4 |
25 | remove_thread(struct thread *t) |
7d901afa |
26 | { |
f0f333f4 |
27 | #ifdef USE_THREADS |
7d901afa |
28 | DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(), |
29 | "%p: remove_thread %p\n", thr, t))); |
30 | MUTEX_LOCK(&threads_mutex); |
0a00ffdb |
31 | MUTEX_DESTROY(&t->mutex); |
7d901afa |
32 | nthreads--; |
33 | t->prev->next = t->next; |
34 | t->next->prev = t->prev; |
35 | COND_BROADCAST(&nthreads_cond); |
36 | MUTEX_UNLOCK(&threads_mutex); |
f0f333f4 |
37 | #endif |
7d901afa |
38 | } |
39 | |
ea0efc06 |
40 | static THREAD_RET_TYPE |
f0f333f4 |
41 | threadstart(void *arg) |
d9bb3666 |
42 | { |
f0f333f4 |
43 | #ifdef USE_THREADS |
783070da |
44 | #ifdef FAKE_THREADS |
45 | Thread savethread = thr; |
46 | LOGOP myop; |
47 | dSP; |
48 | I32 oldscope = scopestack_ix; |
49 | I32 retval; |
458fb581 |
50 | AV *av; |
783070da |
51 | int i; |
52 | |
683929b4 |
53 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
54 | thr, SvPEEK(TOPs))); |
783070da |
55 | thr = (Thread) arg; |
56 | savemark = TOPMARK; |
57 | thr->prev = thr->prev_run = savethread; |
58 | thr->next = savethread->next; |
59 | thr->next_run = savethread->next_run; |
60 | savethread->next = savethread->next_run = thr; |
61 | thr->wait_queue = 0; |
62 | thr->private = 0; |
63 | |
64 | /* Now duplicate most of perl_call_sv but with a few twists */ |
65 | op = (OP*)&myop; |
66 | Zero(op, 1, LOGOP); |
67 | myop.op_flags = OPf_STACKED; |
68 | myop.op_next = Nullop; |
69 | myop.op_flags |= OPf_KNOW; |
70 | myop.op_flags |= OPf_WANT_LIST; |
71 | op = pp_entersub(ARGS); |
72 | DEBUG_L(if (!op) |
73 | PerlIO_printf(PerlIO_stderr(), "thread starts at Nullop\n")); |
74 | /* |
75 | * When this thread is next scheduled, we start in the right |
76 | * place. When the thread runs off the end of the sub, perl.c |
77 | * handles things, using savemark to figure out how much of the |
78 | * stack is the return value for any join. |
79 | */ |
80 | thr = savethread; /* back to the old thread */ |
81 | return 0; |
82 | #else |
d9bb3666 |
83 | Thread thr = (Thread) arg; |
84 | LOGOP myop; |
4e35701f |
85 | djSP; |
d9bb3666 |
86 | I32 oldmark = TOPMARK; |
87 | I32 oldscope = scopestack_ix; |
88 | I32 retval; |
458fb581 |
89 | SV *sv; |
90 | AV *av = newAV(); |
14fcddff |
91 | int i, ret; |
783070da |
92 | dJMPENV; |
0b9678a8 |
93 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p waiting to start\n", |
94 | thr)); |
783070da |
95 | |
0b9678a8 |
96 | /* Don't call *anything* requiring dTHR until after SET_THR() */ |
d9bb3666 |
97 | /* |
98 | * Wait until our creator releases us. If we didn't do this, then |
99 | * it would be potentially possible for out thread to carry on and |
100 | * do stuff before our creator fills in our "self" field. For example, |
ea0efc06 |
101 | * if we went and created another thread which tried to JOIN with us, |
102 | * then we'd be in a mess. |
d9bb3666 |
103 | */ |
50112d62 |
104 | MUTEX_LOCK(&thr->mutex); |
105 | MUTEX_UNLOCK(&thr->mutex); |
d9bb3666 |
106 | |
d9bb3666 |
107 | /* |
108 | * It's safe to wait until now to set the thread-specific pointer |
109 | * from our pthread_t structure to our struct thread, since we're |
110 | * the only thread who can get at it anyway. |
111 | */ |
ea0efc06 |
112 | SET_THR(thr); |
d9bb3666 |
113 | |
783070da |
114 | /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */ |
683929b4 |
115 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
116 | thr, SvPEEK(TOPs))); |
783070da |
117 | |
458fb581 |
118 | sv = POPs; |
119 | PUTBACK; |
120 | perl_call_sv(sv, G_ARRAY|G_EVAL); |
734689b1 |
121 | SPAGAIN; |
122 | retval = sp - (stack_base + oldmark); |
123 | sp = stack_base + oldmark + 1; |
458fb581 |
124 | if (SvCUR(thr->errsv)) { |
125 | MUTEX_LOCK(&thr->mutex); |
126 | thr->flags |= THRf_DID_DIE; |
127 | MUTEX_UNLOCK(&thr->mutex); |
128 | av_store(av, 0, &sv_no); |
129 | av_store(av, 1, newSVsv(thr->errsv)); |
130 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p died: %s\n", |
131 | SvPV(thr->errsv, na)); |
132 | } else { |
133 | DEBUG_L(STMT_START { |
134 | for (i = 1; i <= retval; i++) { |
135 | PerlIO_printf(PerlIO_stderr(), "%p return[%d] = %s\n", |
136 | thr, i, SvPEEK(sp[i - 1]));) |
137 | } |
138 | } STMT_END); |
139 | av_store(av, 0, &sv_yes); |
140 | for (i = 1; i <= retval; i++, sp++) |
141 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*sp)); |
142 | } |
143 | |
d9bb3666 |
144 | finishoff: |
783070da |
145 | #if 0 |
146 | /* removed for debug */ |
147 | SvREFCNT_dec(curstack); |
148 | #endif |
199100c8 |
149 | SvREFCNT_dec(thr->cvcache); |
54b9620d |
150 | SvREFCNT_dec(thr->threadsv); |
554b3eca |
151 | SvREFCNT_dec(thr->specific); |
38a03e6e |
152 | SvREFCNT_dec(thr->errsv); |
153 | SvREFCNT_dec(thr->errhv); |
d9bb3666 |
154 | Safefree(markstack); |
155 | Safefree(scopestack); |
156 | Safefree(savestack); |
157 | Safefree(retstack); |
158 | Safefree(cxstack); |
159 | Safefree(tmps_stack); |
199100c8 |
160 | Safefree(ofs); |
d9bb3666 |
161 | |
14fcddff |
162 | MUTEX_LOCK(&thr->mutex); |
50112d62 |
163 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
164 | "%p: threadstart finishing: state is %u\n", |
165 | thr, ThrSTATE(thr))); |
14fcddff |
166 | switch (ThrSTATE(thr)) { |
167 | case THRf_R_JOINABLE: |
168 | ThrSETSTATE(thr, THRf_ZOMBIE); |
169 | MUTEX_UNLOCK(&thr->mutex); |
783070da |
170 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
171 | "%p: R_JOINABLE thread finished\n", thr)); |
172 | break; |
173 | case THRf_R_JOINED: |
174 | ThrSETSTATE(thr, THRf_DEAD); |
175 | MUTEX_UNLOCK(&thr->mutex); |
50112d62 |
176 | remove_thread(thr); |
14fcddff |
177 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
178 | "%p: R_JOINED thread finished\n", thr)); |
179 | break; |
50112d62 |
180 | case THRf_R_DETACHED: |
683929b4 |
181 | ThrSETSTATE(thr, THRf_DEAD); |
14fcddff |
182 | MUTEX_UNLOCK(&thr->mutex); |
458fb581 |
183 | SvREFCNT_dec(av); |
14fcddff |
184 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
185 | "%p: DETACHED thread finished\n", thr)); |
50112d62 |
186 | remove_thread(thr); /* This might trigger main thread to finish */ |
14fcddff |
187 | break; |
188 | default: |
189 | MUTEX_UNLOCK(&thr->mutex); |
190 | croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); |
191 | /* NOTREACHED */ |
734689b1 |
192 | } |
458fb581 |
193 | return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
ea0efc06 |
194 | /* us unless we're detached, in which */ |
195 | /* case noone sees the value anyway. */ |
783070da |
196 | #endif |
f0f333f4 |
197 | #else |
198 | return THREAD_RET_CAST(NULL); |
199 | #endif |
d9bb3666 |
200 | } |
201 | |
683929b4 |
202 | static SV * |
458fb581 |
203 | newthread (SV *startsv, AV *initargs, char *classname) |
d9bb3666 |
204 | { |
f0f333f4 |
205 | #ifdef USE_THREADS |
d9bb3666 |
206 | dSP; |
207 | Thread savethread; |
208 | int i; |
683929b4 |
209 | SV *sv; |
ea0efc06 |
210 | int err; |
211 | #ifndef THREAD_CREATE |
f152979c |
212 | sigset_t fullmask, oldmask; |
ea0efc06 |
213 | #endif |
d9bb3666 |
214 | |
215 | savethread = thr; |
a863c7d1 |
216 | thr = new_struct_thread(thr); |
d9bb3666 |
217 | SPAGAIN; |
50112d62 |
218 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
0b9678a8 |
219 | "%p: newthread (%p), tid is %u, preparing stack\n", |
220 | savethread, thr, thr->tid)); |
d9bb3666 |
221 | /* The following pushes the arg list and startsv onto the *new* stack */ |
222 | PUSHMARK(sp); |
223 | /* Could easily speed up the following greatly */ |
734689b1 |
224 | for (i = 0; i <= AvFILL(initargs); i++) |
d9bb3666 |
225 | XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); |
226 | XPUSHs(SvREFCNT_inc(startsv)); |
227 | PUTBACK; |
ea0efc06 |
228 | #ifdef THREAD_CREATE |
f0f333f4 |
229 | err = THREAD_CREATE(thr, threadstart); |
783070da |
230 | #else |
d9bb3666 |
231 | /* On your marks... */ |
14fcddff |
232 | MUTEX_LOCK(&thr->mutex); |
ea0efc06 |
233 | /* Get set... */ |
f152979c |
234 | sigfillset(&fullmask); |
235 | if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) |
236 | croak("panic: sigprocmask"); |
46930d8f |
237 | err = pthread_create(&thr->self, pthread_attr_default, |
238 | threadstart, (void*) thr); |
d9bb3666 |
239 | /* Go */ |
14fcddff |
240 | MUTEX_UNLOCK(&thr->mutex); |
ea0efc06 |
241 | #endif |
242 | if (err) { |
0b9678a8 |
243 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
244 | "%p: create of %p failed %d\n", savethread, thr, err)); |
ea0efc06 |
245 | /* Thread creation failed--clean up */ |
199100c8 |
246 | SvREFCNT_dec(thr->cvcache); |
ea0efc06 |
247 | remove_thread(thr); |
248 | MUTEX_DESTROY(&thr->mutex); |
249 | for (i = 0; i <= AvFILL(initargs); i++) |
250 | SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); |
251 | SvREFCNT_dec(startsv); |
252 | return NULL; |
253 | } |
254 | #ifdef THREAD_POST_CREATE |
255 | THREAD_POST_CREATE(thr); |
256 | #else |
f152979c |
257 | if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
258 | croak("panic: sigprocmask"); |
783070da |
259 | #endif |
7d901afa |
260 | sv = newSViv(thr->tid); |
199100c8 |
261 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
262 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
263 | return sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
f0f333f4 |
264 | #else |
265 | croak("No threads in this perl"); |
266 | return &sv_undef; |
267 | #endif |
d9bb3666 |
268 | } |
269 | |
f0f333f4 |
270 | static Signal_t handle_thread_signal _((int sig)); |
271 | |
f152979c |
272 | static Signal_t |
f0f333f4 |
273 | handle_thread_signal(int sig) |
f152979c |
274 | { |
275 | char c = (char) sig; |
276 | write(sig_pipe[0], &c, 1); |
277 | } |
278 | |
d9bb3666 |
279 | MODULE = Thread PACKAGE = Thread |
0b9678a8 |
280 | PROTOTYPES: DISABLE |
d9bb3666 |
281 | |
683929b4 |
282 | void |
458fb581 |
283 | new(classname, startsv, ...) |
284 | char * classname |
d9bb3666 |
285 | SV * startsv |
734689b1 |
286 | AV * av = av_make(items - 2, &ST(2)); |
683929b4 |
287 | PPCODE: |
458fb581 |
288 | XPUSHs(sv_2mortal(newthread(startsv, av, classname))); |
d9bb3666 |
289 | |
290 | void |
d9bb3666 |
291 | join(t) |
292 | Thread t |
293 | AV * av = NO_INIT |
294 | int i = NO_INIT |
295 | PPCODE: |
f0f333f4 |
296 | #ifdef USE_THREADS |
7d901afa |
297 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", |
298 | thr, t, ThrSTATE(t));); |
50112d62 |
299 | MUTEX_LOCK(&t->mutex); |
300 | switch (ThrSTATE(t)) { |
14fcddff |
301 | case THRf_R_JOINABLE: |
302 | case THRf_R_JOINED: |
50112d62 |
303 | ThrSETSTATE(t, THRf_R_JOINED); |
304 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
305 | break; |
306 | case THRf_ZOMBIE: |
50112d62 |
307 | ThrSETSTATE(t, THRf_DEAD); |
308 | MUTEX_UNLOCK(&t->mutex); |
309 | remove_thread(t); |
14fcddff |
310 | break; |
311 | default: |
50112d62 |
312 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
313 | croak("can't join with thread"); |
314 | /* NOTREACHED */ |
315 | } |
ea0efc06 |
316 | JOIN(t, &av); |
7d901afa |
317 | |
458fb581 |
318 | if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
319 | /* Could easily speed up the following if necessary */ |
320 | for (i = 1; i <= AvFILL(av); i++) |
321 | XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE))); |
322 | } else { |
323 | char *mess = SvPV(*av_fetch(av, 1, FALSE), na); |
324 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
325 | "%p: join propagating die message: %s\n", |
326 | thr, mess)); |
327 | croak(mess); |
328 | } |
f0f333f4 |
329 | #endif |
d9bb3666 |
330 | |
331 | void |
734689b1 |
332 | detach(t) |
d9bb3666 |
333 | Thread t |
334 | CODE: |
f0f333f4 |
335 | #ifdef USE_THREADS |
7d901afa |
336 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", |
337 | thr, t, ThrSTATE(t));); |
50112d62 |
338 | MUTEX_LOCK(&t->mutex); |
339 | switch (ThrSTATE(t)) { |
14fcddff |
340 | case THRf_R_JOINABLE: |
50112d62 |
341 | ThrSETSTATE(t, THRf_R_DETACHED); |
14fcddff |
342 | /* fall through */ |
50112d62 |
343 | case THRf_R_DETACHED: |
14fcddff |
344 | DETACH(t); |
50112d62 |
345 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
346 | break; |
347 | case THRf_ZOMBIE: |
50112d62 |
348 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa |
349 | DETACH(t); |
50112d62 |
350 | MUTEX_UNLOCK(&t->mutex); |
351 | remove_thread(t); |
14fcddff |
352 | break; |
353 | default: |
50112d62 |
354 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
355 | croak("can't detach thread"); |
356 | /* NOTREACHED */ |
734689b1 |
357 | } |
f0f333f4 |
358 | #endif |
d9bb3666 |
359 | |
360 | void |
7d901afa |
361 | equal(t1, t2) |
362 | Thread t1 |
363 | Thread t2 |
364 | PPCODE: |
365 | PUSHs((t1 == t2) ? &sv_yes : &sv_no); |
366 | |
367 | void |
368 | flags(t) |
369 | Thread t |
370 | PPCODE: |
f0f333f4 |
371 | #ifdef USE_THREADS |
7d901afa |
372 | PUSHs(sv_2mortal(newSViv(t->flags))); |
f0f333f4 |
373 | #endif |
7d901afa |
374 | |
375 | void |
458fb581 |
376 | self(classname) |
377 | char * classname |
7d901afa |
378 | PREINIT: |
379 | SV *sv; |
f0f333f4 |
380 | PPCODE: |
381 | #ifdef USE_THREADS |
7d901afa |
382 | sv = newSViv(thr->tid); |
199100c8 |
383 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
384 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
385 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
386 | gv_stashpv(classname, TRUE)))); |
f0f333f4 |
387 | #endif |
7d901afa |
388 | |
50112d62 |
389 | U32 |
390 | tid(t) |
391 | Thread t |
392 | CODE: |
f0f333f4 |
393 | #ifdef USE_THREADS |
50112d62 |
394 | MUTEX_LOCK(&t->mutex); |
395 | RETVAL = t->tid; |
396 | MUTEX_UNLOCK(&t->mutex); |
f0f333f4 |
397 | #else |
398 | RETVAL = 0; |
399 | #endif |
50112d62 |
400 | OUTPUT: |
401 | RETVAL |
402 | |
403 | void |
404 | DESTROY(t) |
405 | SV * t |
406 | PPCODE: |
407 | PUSHs(&sv_yes); |
408 | |
7d901afa |
409 | void |
734689b1 |
410 | yield() |
d9bb3666 |
411 | CODE: |
f0f333f4 |
412 | { |
413 | #ifdef USE_THREADS |
ea0efc06 |
414 | YIELD; |
f0f333f4 |
415 | #endif |
416 | } |
d9bb3666 |
417 | |
418 | void |
734689b1 |
419 | cond_wait(sv) |
420 | SV * sv |
421 | MAGIC * mg = NO_INIT |
f0f333f4 |
422 | CODE: |
423 | #ifdef USE_THREADS |
2c127b02 |
424 | if (SvROK(sv)) |
734689b1 |
425 | sv = SvRV(sv); |
2c127b02 |
426 | |
734689b1 |
427 | mg = condpair_magic(sv); |
683929b4 |
428 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv)); |
734689b1 |
429 | MUTEX_LOCK(MgMUTEXP(mg)); |
430 | if (MgOWNER(mg) != thr) { |
431 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
432 | croak("cond_wait for lock that we don't own\n"); |
433 | } |
434 | MgOWNER(mg) = 0; |
435 | COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
50112d62 |
436 | while (MgOWNER(mg)) |
437 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
734689b1 |
438 | MgOWNER(mg) = thr; |
439 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
440 | #endif |
441 | |
734689b1 |
442 | void |
443 | cond_signal(sv) |
444 | SV * sv |
445 | MAGIC * mg = NO_INIT |
446 | CODE: |
f0f333f4 |
447 | #ifdef USE_THREADS |
50112d62 |
448 | if (SvROK(sv)) |
734689b1 |
449 | sv = SvRV(sv); |
50112d62 |
450 | |
734689b1 |
451 | mg = condpair_magic(sv); |
683929b4 |
452 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv)); |
734689b1 |
453 | MUTEX_LOCK(MgMUTEXP(mg)); |
454 | if (MgOWNER(mg) != thr) { |
455 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
456 | croak("cond_signal for lock that we don't own\n"); |
457 | } |
458 | COND_SIGNAL(MgCONDP(mg)); |
459 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
460 | #endif |
d9bb3666 |
461 | |
734689b1 |
462 | void |
463 | cond_broadcast(sv) |
464 | SV * sv |
465 | MAGIC * mg = NO_INIT |
f0f333f4 |
466 | CODE: |
467 | #ifdef USE_THREADS |
783070da |
468 | if (SvROK(sv)) |
734689b1 |
469 | sv = SvRV(sv); |
783070da |
470 | |
734689b1 |
471 | mg = condpair_magic(sv); |
683929b4 |
472 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", |
473 | thr, sv)); |
734689b1 |
474 | MUTEX_LOCK(MgMUTEXP(mg)); |
475 | if (MgOWNER(mg) != thr) { |
476 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
477 | croak("cond_broadcast for lock that we don't own\n"); |
478 | } |
479 | COND_BROADCAST(MgCONDP(mg)); |
480 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
481 | #endif |
f152979c |
482 | |
7d901afa |
483 | void |
458fb581 |
484 | list(classname) |
485 | char * classname |
7d901afa |
486 | PREINIT: |
487 | Thread t; |
488 | AV * av; |
489 | SV ** svp; |
490 | int n = 0; |
491 | PPCODE: |
f0f333f4 |
492 | #ifdef USE_THREADS |
7d901afa |
493 | av = newAV(); |
494 | /* |
495 | * Iterate until we have enough dynamic storage for all threads. |
496 | * We mustn't do any allocation while holding threads_mutex though. |
497 | */ |
498 | MUTEX_LOCK(&threads_mutex); |
499 | do { |
500 | n = nthreads; |
501 | MUTEX_UNLOCK(&threads_mutex); |
502 | if (AvFILL(av) < n - 1) { |
503 | int i = AvFILL(av); |
504 | for (i = AvFILL(av); i < n - 1; i++) { |
505 | SV *sv = newSViv(0); /* fill in tid later */ |
506 | sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ |
507 | av_push(av, sv_bless(newRV_noinc(sv), |
458fb581 |
508 | gv_stashpv(classname, TRUE))); |
50112d62 |
509 | |
7d901afa |
510 | } |
511 | } |
512 | MUTEX_LOCK(&threads_mutex); |
513 | } while (n < nthreads); |
50112d62 |
514 | n = nthreads; /* Get the final correct value */ |
7d901afa |
515 | |
516 | /* |
517 | * At this point, there's enough room to fill in av. |
518 | * Note that we are holding threads_mutex so the list |
519 | * won't change out from under us but all the remaining |
520 | * processing is "fast" (no blocking, malloc etc.) |
521 | */ |
522 | t = thr; |
523 | svp = AvARRAY(av); |
524 | do { |
0a00ffdb |
525 | SV *sv = (SV*)SvRV(*svp); |
7d901afa |
526 | sv_setiv(sv, t->tid); |
199100c8 |
527 | SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
7d901afa |
528 | SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
529 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
530 | t = t->next; |
0a00ffdb |
531 | svp++; |
7d901afa |
532 | } while (t != thr); |
50112d62 |
533 | /* */ |
7d901afa |
534 | MUTEX_UNLOCK(&threads_mutex); |
535 | /* Truncate any unneeded slots in av */ |
50112d62 |
536 | av_fill(av, n - 1); |
7d901afa |
537 | /* Finally, push all the new objects onto the stack and drop av */ |
538 | EXTEND(sp, n); |
539 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
540 | PUSHs(*svp); |
541 | (void)sv_2mortal((SV*)av); |
f0f333f4 |
542 | #endif |
7d901afa |
543 | |
544 | |
f152979c |
545 | MODULE = Thread PACKAGE = Thread::Signal |
546 | |
547 | void |
548 | kill_sighandler_thread() |
549 | PPCODE: |
550 | write(sig_pipe[0], "\0", 1); |
551 | PUSHs(&sv_yes); |
552 | |
553 | void |
554 | init_thread_signals() |
555 | PPCODE: |
556 | sighandlerp = handle_thread_signal; |
557 | if (pipe(sig_pipe) == -1) |
558 | XSRETURN_UNDEF; |
559 | PUSHs(&sv_yes); |
560 | |
561 | SV * |
562 | await_signal() |
563 | PREINIT: |
564 | char c; |
ea0efc06 |
565 | SSize_t ret; |
f152979c |
566 | CODE: |
567 | do { |
568 | ret = read(sig_pipe[1], &c, 1); |
569 | } while (ret == -1 && errno == EINTR); |
570 | if (ret == -1) |
571 | croak("panic: await_signal"); |
572 | if (ret == 0) |
573 | XSRETURN_UNDEF; |
574 | RETVAL = c ? psig_ptr[c] : &sv_no; |
575 | OUTPUT: |
576 | RETVAL |
4e35701f |
577 | |
458fb581 |
578 | MODULE = Thread PACKAGE = Thread::Specific |
579 | |
580 | void |
581 | data(classname = "Thread::Specific") |
582 | char * classname |
583 | PPCODE: |
fb223100 |
584 | #ifdef USE_THREADS |
458fb581 |
585 | if (AvFILL(thr->specific) == -1) { |
586 | GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); |
587 | av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); |
588 | } |
589 | XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); |
fb223100 |
590 | #endif |