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 | |
85ced67f |
15 | static int sig_pipe[2]; |
f0f333f4 |
16 | |
17 | #ifndef THREAD_RET_TYPE |
f0f333f4 |
18 | #define THREAD_RET_TYPE void * |
19 | #define THREAD_RET_CAST(x) ((THREAD_RET_TYPE) x) |
458fb581 |
20 | #endif |
683929b4 |
21 | |
7d901afa |
22 | static void |
52e1cb5e |
23 | remove_thread(struct perl_thread *t) |
7d901afa |
24 | { |
f0f333f4 |
25 | #ifdef USE_THREADS |
7d901afa |
26 | DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(), |
27 | "%p: remove_thread %p\n", thr, t))); |
28 | MUTEX_LOCK(&threads_mutex); |
0a00ffdb |
29 | MUTEX_DESTROY(&t->mutex); |
7d901afa |
30 | nthreads--; |
31 | t->prev->next = t->next; |
32 | t->next->prev = t->prev; |
33 | COND_BROADCAST(&nthreads_cond); |
34 | MUTEX_UNLOCK(&threads_mutex); |
f0f333f4 |
35 | #endif |
7d901afa |
36 | } |
37 | |
ea0efc06 |
38 | static THREAD_RET_TYPE |
f0f333f4 |
39 | threadstart(void *arg) |
d9bb3666 |
40 | { |
f0f333f4 |
41 | #ifdef USE_THREADS |
783070da |
42 | #ifdef FAKE_THREADS |
43 | Thread savethread = thr; |
44 | LOGOP myop; |
45 | dSP; |
46 | I32 oldscope = scopestack_ix; |
47 | I32 retval; |
458fb581 |
48 | AV *av; |
783070da |
49 | int i; |
50 | |
683929b4 |
51 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
52 | thr, SvPEEK(TOPs))); |
783070da |
53 | thr = (Thread) arg; |
54 | savemark = TOPMARK; |
55 | thr->prev = thr->prev_run = savethread; |
56 | thr->next = savethread->next; |
57 | thr->next_run = savethread->next_run; |
58 | savethread->next = savethread->next_run = thr; |
59 | thr->wait_queue = 0; |
60 | thr->private = 0; |
61 | |
62 | /* Now duplicate most of perl_call_sv but with a few twists */ |
63 | op = (OP*)&myop; |
64 | Zero(op, 1, LOGOP); |
65 | myop.op_flags = OPf_STACKED; |
66 | myop.op_next = Nullop; |
67 | myop.op_flags |= OPf_KNOW; |
68 | myop.op_flags |= OPf_WANT_LIST; |
69 | op = pp_entersub(ARGS); |
70 | DEBUG_L(if (!op) |
71 | PerlIO_printf(PerlIO_stderr(), "thread starts at Nullop\n")); |
72 | /* |
73 | * When this thread is next scheduled, we start in the right |
74 | * place. When the thread runs off the end of the sub, perl.c |
75 | * handles things, using savemark to figure out how much of the |
76 | * stack is the return value for any join. |
77 | */ |
78 | thr = savethread; /* back to the old thread */ |
79 | return 0; |
80 | #else |
d9bb3666 |
81 | Thread thr = (Thread) arg; |
82 | LOGOP myop; |
4e35701f |
83 | djSP; |
d9bb3666 |
84 | I32 oldmark = TOPMARK; |
85 | I32 oldscope = scopestack_ix; |
86 | I32 retval; |
458fb581 |
87 | SV *sv; |
88 | AV *av = newAV(); |
14fcddff |
89 | int i, ret; |
783070da |
90 | dJMPENV; |
0b9678a8 |
91 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p waiting to start\n", |
92 | thr)); |
783070da |
93 | |
0b9678a8 |
94 | /* Don't call *anything* requiring dTHR until after SET_THR() */ |
d9bb3666 |
95 | /* |
96 | * Wait until our creator releases us. If we didn't do this, then |
97 | * it would be potentially possible for out thread to carry on and |
98 | * do stuff before our creator fills in our "self" field. For example, |
ea0efc06 |
99 | * if we went and created another thread which tried to JOIN with us, |
100 | * then we'd be in a mess. |
d9bb3666 |
101 | */ |
50112d62 |
102 | MUTEX_LOCK(&thr->mutex); |
103 | MUTEX_UNLOCK(&thr->mutex); |
d9bb3666 |
104 | |
d9bb3666 |
105 | /* |
106 | * It's safe to wait until now to set the thread-specific pointer |
52e1cb5e |
107 | * from our pthread_t structure to our struct perl_thread, since |
108 | * we're the only thread who can get at it anyway. |
d9bb3666 |
109 | */ |
ea0efc06 |
110 | SET_THR(thr); |
d9bb3666 |
111 | |
783070da |
112 | /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */ |
683929b4 |
113 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
114 | thr, SvPEEK(TOPs))); |
783070da |
115 | |
458fb581 |
116 | sv = POPs; |
117 | PUTBACK; |
118 | perl_call_sv(sv, G_ARRAY|G_EVAL); |
734689b1 |
119 | SPAGAIN; |
120 | retval = sp - (stack_base + oldmark); |
121 | sp = stack_base + oldmark + 1; |
458fb581 |
122 | if (SvCUR(thr->errsv)) { |
123 | MUTEX_LOCK(&thr->mutex); |
124 | thr->flags |= THRf_DID_DIE; |
125 | MUTEX_UNLOCK(&thr->mutex); |
126 | av_store(av, 0, &sv_no); |
127 | av_store(av, 1, newSVsv(thr->errsv)); |
128 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p died: %s\n", |
dd4ea8b4 |
129 | SvPV(thr->errsv, na))); |
458fb581 |
130 | } else { |
131 | DEBUG_L(STMT_START { |
132 | for (i = 1; i <= retval; i++) { |
133 | PerlIO_printf(PerlIO_stderr(), "%p return[%d] = %s\n", |
dd4ea8b4 |
134 | thr, i, SvPEEK(sp[i - 1])); |
458fb581 |
135 | } |
136 | } STMT_END); |
137 | av_store(av, 0, &sv_yes); |
138 | for (i = 1; i <= retval; i++, sp++) |
139 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*sp)); |
140 | } |
141 | |
d9bb3666 |
142 | finishoff: |
783070da |
143 | #if 0 |
144 | /* removed for debug */ |
145 | SvREFCNT_dec(curstack); |
146 | #endif |
199100c8 |
147 | SvREFCNT_dec(thr->cvcache); |
54b9620d |
148 | SvREFCNT_dec(thr->threadsv); |
554b3eca |
149 | SvREFCNT_dec(thr->specific); |
38a03e6e |
150 | SvREFCNT_dec(thr->errsv); |
151 | SvREFCNT_dec(thr->errhv); |
d9bb3666 |
152 | Safefree(markstack); |
153 | Safefree(scopestack); |
154 | Safefree(savestack); |
155 | Safefree(retstack); |
156 | Safefree(cxstack); |
157 | Safefree(tmps_stack); |
199100c8 |
158 | Safefree(ofs); |
d9bb3666 |
159 | |
14fcddff |
160 | MUTEX_LOCK(&thr->mutex); |
50112d62 |
161 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
162 | "%p: threadstart finishing: state is %u\n", |
163 | thr, ThrSTATE(thr))); |
14fcddff |
164 | switch (ThrSTATE(thr)) { |
165 | case THRf_R_JOINABLE: |
166 | ThrSETSTATE(thr, THRf_ZOMBIE); |
167 | MUTEX_UNLOCK(&thr->mutex); |
783070da |
168 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
169 | "%p: R_JOINABLE thread finished\n", thr)); |
170 | break; |
171 | case THRf_R_JOINED: |
172 | ThrSETSTATE(thr, THRf_DEAD); |
173 | MUTEX_UNLOCK(&thr->mutex); |
50112d62 |
174 | remove_thread(thr); |
14fcddff |
175 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
176 | "%p: R_JOINED thread finished\n", thr)); |
177 | break; |
50112d62 |
178 | case THRf_R_DETACHED: |
683929b4 |
179 | ThrSETSTATE(thr, THRf_DEAD); |
14fcddff |
180 | MUTEX_UNLOCK(&thr->mutex); |
458fb581 |
181 | SvREFCNT_dec(av); |
14fcddff |
182 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
183 | "%p: DETACHED thread finished\n", thr)); |
50112d62 |
184 | remove_thread(thr); /* This might trigger main thread to finish */ |
14fcddff |
185 | break; |
186 | default: |
187 | MUTEX_UNLOCK(&thr->mutex); |
188 | croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); |
189 | /* NOTREACHED */ |
734689b1 |
190 | } |
458fb581 |
191 | return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
ea0efc06 |
192 | /* us unless we're detached, in which */ |
193 | /* case noone sees the value anyway. */ |
783070da |
194 | #endif |
f0f333f4 |
195 | #else |
196 | return THREAD_RET_CAST(NULL); |
197 | #endif |
d9bb3666 |
198 | } |
199 | |
683929b4 |
200 | static SV * |
458fb581 |
201 | newthread (SV *startsv, AV *initargs, char *classname) |
d9bb3666 |
202 | { |
f0f333f4 |
203 | #ifdef USE_THREADS |
d9bb3666 |
204 | dSP; |
205 | Thread savethread; |
206 | int i; |
683929b4 |
207 | SV *sv; |
ea0efc06 |
208 | int err; |
209 | #ifndef THREAD_CREATE |
940cb80d |
210 | static pthread_attr_t attr; |
211 | static int attr_inited = 0; |
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"); |
940cb80d |
237 | err = 0; |
238 | if (!attr_inited) { |
239 | attr_inited = 1; |
52e1cb5e |
240 | err = pthread_attr_init(&attr); |
940cb80d |
241 | if (err == 0) |
242 | err = pthread_attr_setdetachstate(&attr, ATTR_JOINABLE); |
52e1cb5e |
243 | } |
940cb80d |
244 | if (err == 0) |
245 | err = pthread_create(&thr->self, &attr, threadstart, (void*) thr); |
d9bb3666 |
246 | /* Go */ |
14fcddff |
247 | MUTEX_UNLOCK(&thr->mutex); |
ea0efc06 |
248 | #endif |
249 | if (err) { |
0b9678a8 |
250 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
940cb80d |
251 | "%p: create of %p failed %d\n", |
252 | savethread, thr, err)); |
ea0efc06 |
253 | /* Thread creation failed--clean up */ |
199100c8 |
254 | SvREFCNT_dec(thr->cvcache); |
ea0efc06 |
255 | remove_thread(thr); |
256 | MUTEX_DESTROY(&thr->mutex); |
257 | for (i = 0; i <= AvFILL(initargs); i++) |
258 | SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); |
259 | SvREFCNT_dec(startsv); |
260 | return NULL; |
261 | } |
262 | #ifdef THREAD_POST_CREATE |
263 | THREAD_POST_CREATE(thr); |
264 | #else |
f152979c |
265 | if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
266 | croak("panic: sigprocmask"); |
783070da |
267 | #endif |
7d901afa |
268 | sv = newSViv(thr->tid); |
199100c8 |
269 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
270 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
271 | return sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
f0f333f4 |
272 | #else |
273 | croak("No threads in this perl"); |
274 | return &sv_undef; |
275 | #endif |
d9bb3666 |
276 | } |
277 | |
f0f333f4 |
278 | static Signal_t handle_thread_signal _((int sig)); |
279 | |
f152979c |
280 | static Signal_t |
f0f333f4 |
281 | handle_thread_signal(int sig) |
f152979c |
282 | { |
283 | char c = (char) sig; |
284 | write(sig_pipe[0], &c, 1); |
285 | } |
286 | |
d9bb3666 |
287 | MODULE = Thread PACKAGE = Thread |
0b9678a8 |
288 | PROTOTYPES: DISABLE |
d9bb3666 |
289 | |
683929b4 |
290 | void |
458fb581 |
291 | new(classname, startsv, ...) |
292 | char * classname |
d9bb3666 |
293 | SV * startsv |
734689b1 |
294 | AV * av = av_make(items - 2, &ST(2)); |
683929b4 |
295 | PPCODE: |
458fb581 |
296 | XPUSHs(sv_2mortal(newthread(startsv, av, classname))); |
d9bb3666 |
297 | |
298 | void |
d9bb3666 |
299 | join(t) |
300 | Thread t |
301 | AV * av = NO_INIT |
302 | int i = NO_INIT |
303 | PPCODE: |
f0f333f4 |
304 | #ifdef USE_THREADS |
7d901afa |
305 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", |
306 | thr, t, ThrSTATE(t));); |
50112d62 |
307 | MUTEX_LOCK(&t->mutex); |
308 | switch (ThrSTATE(t)) { |
14fcddff |
309 | case THRf_R_JOINABLE: |
310 | case THRf_R_JOINED: |
50112d62 |
311 | ThrSETSTATE(t, THRf_R_JOINED); |
312 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
313 | break; |
314 | case THRf_ZOMBIE: |
50112d62 |
315 | ThrSETSTATE(t, THRf_DEAD); |
316 | MUTEX_UNLOCK(&t->mutex); |
317 | remove_thread(t); |
14fcddff |
318 | break; |
319 | default: |
50112d62 |
320 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
321 | croak("can't join with thread"); |
322 | /* NOTREACHED */ |
323 | } |
ea0efc06 |
324 | JOIN(t, &av); |
7d901afa |
325 | |
458fb581 |
326 | if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
327 | /* Could easily speed up the following if necessary */ |
328 | for (i = 1; i <= AvFILL(av); i++) |
329 | XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE))); |
330 | } else { |
331 | char *mess = SvPV(*av_fetch(av, 1, FALSE), na); |
332 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
333 | "%p: join propagating die message: %s\n", |
334 | thr, mess)); |
335 | croak(mess); |
336 | } |
f0f333f4 |
337 | #endif |
d9bb3666 |
338 | |
339 | void |
734689b1 |
340 | detach(t) |
d9bb3666 |
341 | Thread t |
342 | CODE: |
f0f333f4 |
343 | #ifdef USE_THREADS |
7d901afa |
344 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", |
345 | thr, t, ThrSTATE(t));); |
50112d62 |
346 | MUTEX_LOCK(&t->mutex); |
347 | switch (ThrSTATE(t)) { |
14fcddff |
348 | case THRf_R_JOINABLE: |
50112d62 |
349 | ThrSETSTATE(t, THRf_R_DETACHED); |
14fcddff |
350 | /* fall through */ |
50112d62 |
351 | case THRf_R_DETACHED: |
14fcddff |
352 | DETACH(t); |
50112d62 |
353 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
354 | break; |
355 | case THRf_ZOMBIE: |
50112d62 |
356 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa |
357 | DETACH(t); |
50112d62 |
358 | MUTEX_UNLOCK(&t->mutex); |
359 | remove_thread(t); |
14fcddff |
360 | break; |
361 | default: |
50112d62 |
362 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
363 | croak("can't detach thread"); |
364 | /* NOTREACHED */ |
734689b1 |
365 | } |
f0f333f4 |
366 | #endif |
d9bb3666 |
367 | |
368 | void |
7d901afa |
369 | equal(t1, t2) |
370 | Thread t1 |
371 | Thread t2 |
372 | PPCODE: |
373 | PUSHs((t1 == t2) ? &sv_yes : &sv_no); |
374 | |
375 | void |
376 | flags(t) |
377 | Thread t |
378 | PPCODE: |
f0f333f4 |
379 | #ifdef USE_THREADS |
7d901afa |
380 | PUSHs(sv_2mortal(newSViv(t->flags))); |
f0f333f4 |
381 | #endif |
7d901afa |
382 | |
383 | void |
458fb581 |
384 | self(classname) |
385 | char * classname |
7d901afa |
386 | PREINIT: |
387 | SV *sv; |
f0f333f4 |
388 | PPCODE: |
389 | #ifdef USE_THREADS |
7d901afa |
390 | sv = newSViv(thr->tid); |
199100c8 |
391 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
392 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
393 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
394 | gv_stashpv(classname, TRUE)))); |
f0f333f4 |
395 | #endif |
7d901afa |
396 | |
50112d62 |
397 | U32 |
398 | tid(t) |
399 | Thread t |
400 | CODE: |
f0f333f4 |
401 | #ifdef USE_THREADS |
50112d62 |
402 | MUTEX_LOCK(&t->mutex); |
403 | RETVAL = t->tid; |
404 | MUTEX_UNLOCK(&t->mutex); |
f0f333f4 |
405 | #else |
406 | RETVAL = 0; |
407 | #endif |
50112d62 |
408 | OUTPUT: |
409 | RETVAL |
410 | |
411 | void |
412 | DESTROY(t) |
413 | SV * t |
414 | PPCODE: |
415 | PUSHs(&sv_yes); |
416 | |
7d901afa |
417 | void |
734689b1 |
418 | yield() |
d9bb3666 |
419 | CODE: |
f0f333f4 |
420 | { |
421 | #ifdef USE_THREADS |
ea0efc06 |
422 | YIELD; |
f0f333f4 |
423 | #endif |
424 | } |
d9bb3666 |
425 | |
426 | void |
734689b1 |
427 | cond_wait(sv) |
428 | SV * sv |
429 | MAGIC * mg = NO_INIT |
f0f333f4 |
430 | CODE: |
431 | #ifdef USE_THREADS |
2c127b02 |
432 | if (SvROK(sv)) |
734689b1 |
433 | sv = SvRV(sv); |
2c127b02 |
434 | |
734689b1 |
435 | mg = condpair_magic(sv); |
683929b4 |
436 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv)); |
734689b1 |
437 | MUTEX_LOCK(MgMUTEXP(mg)); |
438 | if (MgOWNER(mg) != thr) { |
439 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
440 | croak("cond_wait for lock that we don't own\n"); |
441 | } |
442 | MgOWNER(mg) = 0; |
443 | COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
50112d62 |
444 | while (MgOWNER(mg)) |
445 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
734689b1 |
446 | MgOWNER(mg) = thr; |
447 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
448 | #endif |
449 | |
734689b1 |
450 | void |
451 | cond_signal(sv) |
452 | SV * sv |
453 | MAGIC * mg = NO_INIT |
454 | CODE: |
f0f333f4 |
455 | #ifdef USE_THREADS |
50112d62 |
456 | if (SvROK(sv)) |
734689b1 |
457 | sv = SvRV(sv); |
50112d62 |
458 | |
734689b1 |
459 | mg = condpair_magic(sv); |
683929b4 |
460 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv)); |
734689b1 |
461 | MUTEX_LOCK(MgMUTEXP(mg)); |
462 | if (MgOWNER(mg) != thr) { |
463 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
464 | croak("cond_signal for lock that we don't own\n"); |
465 | } |
466 | COND_SIGNAL(MgCONDP(mg)); |
467 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
468 | #endif |
d9bb3666 |
469 | |
734689b1 |
470 | void |
471 | cond_broadcast(sv) |
472 | SV * sv |
473 | MAGIC * mg = NO_INIT |
f0f333f4 |
474 | CODE: |
475 | #ifdef USE_THREADS |
783070da |
476 | if (SvROK(sv)) |
734689b1 |
477 | sv = SvRV(sv); |
783070da |
478 | |
734689b1 |
479 | mg = condpair_magic(sv); |
683929b4 |
480 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", |
481 | thr, sv)); |
734689b1 |
482 | MUTEX_LOCK(MgMUTEXP(mg)); |
483 | if (MgOWNER(mg) != thr) { |
484 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
485 | croak("cond_broadcast for lock that we don't own\n"); |
486 | } |
487 | COND_BROADCAST(MgCONDP(mg)); |
488 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
489 | #endif |
f152979c |
490 | |
7d901afa |
491 | void |
458fb581 |
492 | list(classname) |
493 | char * classname |
7d901afa |
494 | PREINIT: |
495 | Thread t; |
496 | AV * av; |
497 | SV ** svp; |
498 | int n = 0; |
499 | PPCODE: |
f0f333f4 |
500 | #ifdef USE_THREADS |
7d901afa |
501 | av = newAV(); |
502 | /* |
503 | * Iterate until we have enough dynamic storage for all threads. |
504 | * We mustn't do any allocation while holding threads_mutex though. |
505 | */ |
506 | MUTEX_LOCK(&threads_mutex); |
507 | do { |
508 | n = nthreads; |
509 | MUTEX_UNLOCK(&threads_mutex); |
510 | if (AvFILL(av) < n - 1) { |
511 | int i = AvFILL(av); |
512 | for (i = AvFILL(av); i < n - 1; i++) { |
513 | SV *sv = newSViv(0); /* fill in tid later */ |
514 | sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ |
515 | av_push(av, sv_bless(newRV_noinc(sv), |
458fb581 |
516 | gv_stashpv(classname, TRUE))); |
50112d62 |
517 | |
7d901afa |
518 | } |
519 | } |
520 | MUTEX_LOCK(&threads_mutex); |
521 | } while (n < nthreads); |
50112d62 |
522 | n = nthreads; /* Get the final correct value */ |
7d901afa |
523 | |
524 | /* |
525 | * At this point, there's enough room to fill in av. |
526 | * Note that we are holding threads_mutex so the list |
527 | * won't change out from under us but all the remaining |
528 | * processing is "fast" (no blocking, malloc etc.) |
529 | */ |
530 | t = thr; |
531 | svp = AvARRAY(av); |
532 | do { |
0a00ffdb |
533 | SV *sv = (SV*)SvRV(*svp); |
7d901afa |
534 | sv_setiv(sv, t->tid); |
199100c8 |
535 | SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
7d901afa |
536 | SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
537 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
538 | t = t->next; |
0a00ffdb |
539 | svp++; |
7d901afa |
540 | } while (t != thr); |
50112d62 |
541 | /* */ |
7d901afa |
542 | MUTEX_UNLOCK(&threads_mutex); |
543 | /* Truncate any unneeded slots in av */ |
50112d62 |
544 | av_fill(av, n - 1); |
7d901afa |
545 | /* Finally, push all the new objects onto the stack and drop av */ |
546 | EXTEND(sp, n); |
547 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
548 | PUSHs(*svp); |
549 | (void)sv_2mortal((SV*)av); |
f0f333f4 |
550 | #endif |
7d901afa |
551 | |
552 | |
f152979c |
553 | MODULE = Thread PACKAGE = Thread::Signal |
554 | |
555 | void |
556 | kill_sighandler_thread() |
557 | PPCODE: |
558 | write(sig_pipe[0], "\0", 1); |
559 | PUSHs(&sv_yes); |
560 | |
561 | void |
562 | init_thread_signals() |
563 | PPCODE: |
564 | sighandlerp = handle_thread_signal; |
565 | if (pipe(sig_pipe) == -1) |
566 | XSRETURN_UNDEF; |
567 | PUSHs(&sv_yes); |
568 | |
569 | SV * |
570 | await_signal() |
571 | PREINIT: |
572 | char c; |
ea0efc06 |
573 | SSize_t ret; |
f152979c |
574 | CODE: |
575 | do { |
576 | ret = read(sig_pipe[1], &c, 1); |
577 | } while (ret == -1 && errno == EINTR); |
578 | if (ret == -1) |
579 | croak("panic: await_signal"); |
580 | if (ret == 0) |
581 | XSRETURN_UNDEF; |
582 | RETVAL = c ? psig_ptr[c] : &sv_no; |
583 | OUTPUT: |
584 | RETVAL |
4e35701f |
585 | |
458fb581 |
586 | MODULE = Thread PACKAGE = Thread::Specific |
587 | |
588 | void |
589 | data(classname = "Thread::Specific") |
590 | char * classname |
591 | PPCODE: |
fb223100 |
592 | #ifdef USE_THREADS |
458fb581 |
593 | if (AvFILL(thr->specific) == -1) { |
594 | GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); |
595 | av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); |
596 | } |
597 | XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); |
fb223100 |
598 | #endif |