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; |
924508f0 |
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", |
640cc986 |
129 | thr, 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", |
924508f0 |
134 | thr, i, SvPEEK(SP[i - 1])); |
458fb581 |
135 | } |
136 | } STMT_END); |
137 | av_store(av, 0, &sv_yes); |
924508f0 |
138 | for (i = 1; i <= retval; i++, SP++) |
139 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); |
458fb581 |
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); |
5c0ca799 |
152 | |
d9bb3666 |
153 | Safefree(markstack); |
154 | Safefree(scopestack); |
155 | Safefree(savestack); |
156 | Safefree(retstack); |
157 | Safefree(cxstack); |
158 | Safefree(tmps_stack); |
199100c8 |
159 | Safefree(ofs); |
d9bb3666 |
160 | |
dc92893f |
161 | SvREFCNT_dec(rs); |
162 | SvREFCNT_dec(nrs); |
5c0ca799 |
163 | SvREFCNT_dec(statname); |
164 | Safefree(screamfirst); |
165 | Safefree(screamnext); |
166 | Safefree(reg_start_tmp); |
167 | SvREFCNT_dec(lastscream); |
168 | |
14fcddff |
169 | MUTEX_LOCK(&thr->mutex); |
50112d62 |
170 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
171 | "%p: threadstart finishing: state is %u\n", |
172 | thr, ThrSTATE(thr))); |
14fcddff |
173 | switch (ThrSTATE(thr)) { |
174 | case THRf_R_JOINABLE: |
175 | ThrSETSTATE(thr, THRf_ZOMBIE); |
176 | MUTEX_UNLOCK(&thr->mutex); |
783070da |
177 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
178 | "%p: R_JOINABLE thread finished\n", thr)); |
179 | break; |
180 | case THRf_R_JOINED: |
181 | ThrSETSTATE(thr, THRf_DEAD); |
182 | MUTEX_UNLOCK(&thr->mutex); |
50112d62 |
183 | remove_thread(thr); |
14fcddff |
184 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
185 | "%p: R_JOINED thread finished\n", thr)); |
186 | break; |
50112d62 |
187 | case THRf_R_DETACHED: |
683929b4 |
188 | ThrSETSTATE(thr, THRf_DEAD); |
14fcddff |
189 | MUTEX_UNLOCK(&thr->mutex); |
458fb581 |
190 | SvREFCNT_dec(av); |
14fcddff |
191 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
192 | "%p: DETACHED thread finished\n", thr)); |
50112d62 |
193 | remove_thread(thr); /* This might trigger main thread to finish */ |
14fcddff |
194 | break; |
195 | default: |
196 | MUTEX_UNLOCK(&thr->mutex); |
197 | croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); |
198 | /* NOTREACHED */ |
734689b1 |
199 | } |
458fb581 |
200 | return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
ea0efc06 |
201 | /* us unless we're detached, in which */ |
202 | /* case noone sees the value anyway. */ |
783070da |
203 | #endif |
f0f333f4 |
204 | #else |
205 | return THREAD_RET_CAST(NULL); |
206 | #endif |
d9bb3666 |
207 | } |
208 | |
683929b4 |
209 | static SV * |
458fb581 |
210 | newthread (SV *startsv, AV *initargs, char *classname) |
d9bb3666 |
211 | { |
f0f333f4 |
212 | #ifdef USE_THREADS |
d9bb3666 |
213 | dSP; |
214 | Thread savethread; |
215 | int i; |
683929b4 |
216 | SV *sv; |
ea0efc06 |
217 | int err; |
218 | #ifndef THREAD_CREATE |
940cb80d |
219 | static pthread_attr_t attr; |
220 | static int attr_inited = 0; |
f152979c |
221 | sigset_t fullmask, oldmask; |
ea0efc06 |
222 | #endif |
d9bb3666 |
223 | |
224 | savethread = thr; |
a863c7d1 |
225 | thr = new_struct_thread(thr); |
d9bb3666 |
226 | SPAGAIN; |
50112d62 |
227 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
0b9678a8 |
228 | "%p: newthread (%p), tid is %u, preparing stack\n", |
229 | savethread, thr, thr->tid)); |
d9bb3666 |
230 | /* The following pushes the arg list and startsv onto the *new* stack */ |
924508f0 |
231 | PUSHMARK(SP); |
d9bb3666 |
232 | /* Could easily speed up the following greatly */ |
734689b1 |
233 | for (i = 0; i <= AvFILL(initargs); i++) |
d9bb3666 |
234 | XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); |
235 | XPUSHs(SvREFCNT_inc(startsv)); |
236 | PUTBACK; |
ea0efc06 |
237 | #ifdef THREAD_CREATE |
f0f333f4 |
238 | err = THREAD_CREATE(thr, threadstart); |
783070da |
239 | #else |
d9bb3666 |
240 | /* On your marks... */ |
14fcddff |
241 | MUTEX_LOCK(&thr->mutex); |
ea0efc06 |
242 | /* Get set... */ |
f152979c |
243 | sigfillset(&fullmask); |
244 | if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) |
245 | croak("panic: sigprocmask"); |
940cb80d |
246 | err = 0; |
247 | if (!attr_inited) { |
248 | attr_inited = 1; |
52e1cb5e |
249 | err = pthread_attr_init(&attr); |
940cb80d |
250 | if (err == 0) |
251 | err = pthread_attr_setdetachstate(&attr, ATTR_JOINABLE); |
52e1cb5e |
252 | } |
940cb80d |
253 | if (err == 0) |
254 | err = pthread_create(&thr->self, &attr, threadstart, (void*) thr); |
d9bb3666 |
255 | /* Go */ |
14fcddff |
256 | MUTEX_UNLOCK(&thr->mutex); |
ea0efc06 |
257 | #endif |
258 | if (err) { |
0b9678a8 |
259 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
940cb80d |
260 | "%p: create of %p failed %d\n", |
261 | savethread, thr, err)); |
ea0efc06 |
262 | /* Thread creation failed--clean up */ |
199100c8 |
263 | SvREFCNT_dec(thr->cvcache); |
ea0efc06 |
264 | remove_thread(thr); |
265 | MUTEX_DESTROY(&thr->mutex); |
266 | for (i = 0; i <= AvFILL(initargs); i++) |
267 | SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); |
268 | SvREFCNT_dec(startsv); |
269 | return NULL; |
270 | } |
271 | #ifdef THREAD_POST_CREATE |
272 | THREAD_POST_CREATE(thr); |
273 | #else |
f152979c |
274 | if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
275 | croak("panic: sigprocmask"); |
783070da |
276 | #endif |
7d901afa |
277 | sv = newSViv(thr->tid); |
199100c8 |
278 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
279 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
280 | return sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
f0f333f4 |
281 | #else |
282 | croak("No threads in this perl"); |
283 | return &sv_undef; |
284 | #endif |
d9bb3666 |
285 | } |
286 | |
f0f333f4 |
287 | static Signal_t handle_thread_signal _((int sig)); |
288 | |
f152979c |
289 | static Signal_t |
f0f333f4 |
290 | handle_thread_signal(int sig) |
f152979c |
291 | { |
3aeed370 |
292 | unsigned char c = (unsigned char) sig; |
293 | /* |
294 | * We're not really allowed to call fprintf in a signal handler |
295 | * so don't be surprised if this isn't robust while debugging |
296 | * with -DL. |
297 | */ |
298 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
299 | "handle_thread_signal: got signal %d\n", sig);); |
300 | write(sig_pipe[1], &c, 1); |
f152979c |
301 | } |
302 | |
d9bb3666 |
303 | MODULE = Thread PACKAGE = Thread |
0b9678a8 |
304 | PROTOTYPES: DISABLE |
d9bb3666 |
305 | |
683929b4 |
306 | void |
458fb581 |
307 | new(classname, startsv, ...) |
308 | char * classname |
d9bb3666 |
309 | SV * startsv |
734689b1 |
310 | AV * av = av_make(items - 2, &ST(2)); |
683929b4 |
311 | PPCODE: |
458fb581 |
312 | XPUSHs(sv_2mortal(newthread(startsv, av, classname))); |
d9bb3666 |
313 | |
314 | void |
d9bb3666 |
315 | join(t) |
316 | Thread t |
317 | AV * av = NO_INIT |
318 | int i = NO_INIT |
319 | PPCODE: |
f0f333f4 |
320 | #ifdef USE_THREADS |
7d901afa |
321 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", |
322 | thr, t, ThrSTATE(t));); |
50112d62 |
323 | MUTEX_LOCK(&t->mutex); |
324 | switch (ThrSTATE(t)) { |
14fcddff |
325 | case THRf_R_JOINABLE: |
326 | case THRf_R_JOINED: |
50112d62 |
327 | ThrSETSTATE(t, THRf_R_JOINED); |
328 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
329 | break; |
330 | case THRf_ZOMBIE: |
50112d62 |
331 | ThrSETSTATE(t, THRf_DEAD); |
332 | MUTEX_UNLOCK(&t->mutex); |
333 | remove_thread(t); |
14fcddff |
334 | break; |
335 | default: |
50112d62 |
336 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
337 | croak("can't join with thread"); |
338 | /* NOTREACHED */ |
339 | } |
ea0efc06 |
340 | JOIN(t, &av); |
7d901afa |
341 | |
458fb581 |
342 | if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
343 | /* Could easily speed up the following if necessary */ |
344 | for (i = 1; i <= AvFILL(av); i++) |
345 | XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE))); |
346 | } else { |
347 | char *mess = SvPV(*av_fetch(av, 1, FALSE), na); |
348 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
349 | "%p: join propagating die message: %s\n", |
350 | thr, mess)); |
351 | croak(mess); |
352 | } |
f0f333f4 |
353 | #endif |
d9bb3666 |
354 | |
355 | void |
734689b1 |
356 | detach(t) |
d9bb3666 |
357 | Thread t |
358 | CODE: |
f0f333f4 |
359 | #ifdef USE_THREADS |
7d901afa |
360 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", |
361 | thr, t, ThrSTATE(t));); |
50112d62 |
362 | MUTEX_LOCK(&t->mutex); |
363 | switch (ThrSTATE(t)) { |
14fcddff |
364 | case THRf_R_JOINABLE: |
50112d62 |
365 | ThrSETSTATE(t, THRf_R_DETACHED); |
14fcddff |
366 | /* fall through */ |
50112d62 |
367 | case THRf_R_DETACHED: |
14fcddff |
368 | DETACH(t); |
50112d62 |
369 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
370 | break; |
371 | case THRf_ZOMBIE: |
50112d62 |
372 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa |
373 | DETACH(t); |
50112d62 |
374 | MUTEX_UNLOCK(&t->mutex); |
375 | remove_thread(t); |
14fcddff |
376 | break; |
377 | default: |
50112d62 |
378 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
379 | croak("can't detach thread"); |
380 | /* NOTREACHED */ |
734689b1 |
381 | } |
f0f333f4 |
382 | #endif |
d9bb3666 |
383 | |
384 | void |
7d901afa |
385 | equal(t1, t2) |
386 | Thread t1 |
387 | Thread t2 |
388 | PPCODE: |
389 | PUSHs((t1 == t2) ? &sv_yes : &sv_no); |
390 | |
391 | void |
392 | flags(t) |
393 | Thread t |
394 | PPCODE: |
f0f333f4 |
395 | #ifdef USE_THREADS |
7d901afa |
396 | PUSHs(sv_2mortal(newSViv(t->flags))); |
f0f333f4 |
397 | #endif |
7d901afa |
398 | |
399 | void |
458fb581 |
400 | self(classname) |
401 | char * classname |
7d901afa |
402 | PREINIT: |
403 | SV *sv; |
f0f333f4 |
404 | PPCODE: |
405 | #ifdef USE_THREADS |
7d901afa |
406 | sv = newSViv(thr->tid); |
199100c8 |
407 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
408 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
409 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
410 | gv_stashpv(classname, TRUE)))); |
f0f333f4 |
411 | #endif |
7d901afa |
412 | |
50112d62 |
413 | U32 |
414 | tid(t) |
415 | Thread t |
416 | CODE: |
f0f333f4 |
417 | #ifdef USE_THREADS |
50112d62 |
418 | MUTEX_LOCK(&t->mutex); |
419 | RETVAL = t->tid; |
420 | MUTEX_UNLOCK(&t->mutex); |
f0f333f4 |
421 | #else |
422 | RETVAL = 0; |
423 | #endif |
50112d62 |
424 | OUTPUT: |
425 | RETVAL |
426 | |
427 | void |
428 | DESTROY(t) |
429 | SV * t |
430 | PPCODE: |
431 | PUSHs(&sv_yes); |
432 | |
7d901afa |
433 | void |
734689b1 |
434 | yield() |
d9bb3666 |
435 | CODE: |
f0f333f4 |
436 | { |
437 | #ifdef USE_THREADS |
ea0efc06 |
438 | YIELD; |
f0f333f4 |
439 | #endif |
440 | } |
d9bb3666 |
441 | |
442 | void |
734689b1 |
443 | cond_wait(sv) |
444 | SV * sv |
445 | MAGIC * mg = NO_INIT |
f0f333f4 |
446 | CODE: |
447 | #ifdef USE_THREADS |
2c127b02 |
448 | if (SvROK(sv)) |
734689b1 |
449 | sv = SvRV(sv); |
2c127b02 |
450 | |
734689b1 |
451 | mg = condpair_magic(sv); |
683929b4 |
452 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv)); |
734689b1 |
453 | MUTEX_LOCK(MgMUTEXP(mg)); |
454 | if (MgOWNER(mg) != thr) { |
455 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
456 | croak("cond_wait for lock that we don't own\n"); |
457 | } |
458 | MgOWNER(mg) = 0; |
459 | COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
50112d62 |
460 | while (MgOWNER(mg)) |
461 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
734689b1 |
462 | MgOWNER(mg) = thr; |
463 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
464 | #endif |
465 | |
734689b1 |
466 | void |
467 | cond_signal(sv) |
468 | SV * sv |
469 | MAGIC * mg = NO_INIT |
470 | CODE: |
f0f333f4 |
471 | #ifdef USE_THREADS |
50112d62 |
472 | if (SvROK(sv)) |
734689b1 |
473 | sv = SvRV(sv); |
50112d62 |
474 | |
734689b1 |
475 | mg = condpair_magic(sv); |
683929b4 |
476 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv)); |
734689b1 |
477 | MUTEX_LOCK(MgMUTEXP(mg)); |
478 | if (MgOWNER(mg) != thr) { |
479 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
480 | croak("cond_signal for lock that we don't own\n"); |
481 | } |
482 | COND_SIGNAL(MgCONDP(mg)); |
483 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
484 | #endif |
d9bb3666 |
485 | |
734689b1 |
486 | void |
487 | cond_broadcast(sv) |
488 | SV * sv |
489 | MAGIC * mg = NO_INIT |
f0f333f4 |
490 | CODE: |
491 | #ifdef USE_THREADS |
783070da |
492 | if (SvROK(sv)) |
734689b1 |
493 | sv = SvRV(sv); |
783070da |
494 | |
734689b1 |
495 | mg = condpair_magic(sv); |
683929b4 |
496 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", |
497 | thr, sv)); |
734689b1 |
498 | MUTEX_LOCK(MgMUTEXP(mg)); |
499 | if (MgOWNER(mg) != thr) { |
500 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
501 | croak("cond_broadcast for lock that we don't own\n"); |
502 | } |
503 | COND_BROADCAST(MgCONDP(mg)); |
504 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
505 | #endif |
f152979c |
506 | |
7d901afa |
507 | void |
458fb581 |
508 | list(classname) |
509 | char * classname |
7d901afa |
510 | PREINIT: |
511 | Thread t; |
512 | AV * av; |
513 | SV ** svp; |
514 | int n = 0; |
515 | PPCODE: |
f0f333f4 |
516 | #ifdef USE_THREADS |
7d901afa |
517 | av = newAV(); |
518 | /* |
519 | * Iterate until we have enough dynamic storage for all threads. |
520 | * We mustn't do any allocation while holding threads_mutex though. |
521 | */ |
522 | MUTEX_LOCK(&threads_mutex); |
523 | do { |
524 | n = nthreads; |
525 | MUTEX_UNLOCK(&threads_mutex); |
526 | if (AvFILL(av) < n - 1) { |
527 | int i = AvFILL(av); |
528 | for (i = AvFILL(av); i < n - 1; i++) { |
529 | SV *sv = newSViv(0); /* fill in tid later */ |
530 | sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ |
531 | av_push(av, sv_bless(newRV_noinc(sv), |
458fb581 |
532 | gv_stashpv(classname, TRUE))); |
50112d62 |
533 | |
7d901afa |
534 | } |
535 | } |
536 | MUTEX_LOCK(&threads_mutex); |
537 | } while (n < nthreads); |
50112d62 |
538 | n = nthreads; /* Get the final correct value */ |
7d901afa |
539 | |
540 | /* |
541 | * At this point, there's enough room to fill in av. |
542 | * Note that we are holding threads_mutex so the list |
543 | * won't change out from under us but all the remaining |
544 | * processing is "fast" (no blocking, malloc etc.) |
545 | */ |
546 | t = thr; |
547 | svp = AvARRAY(av); |
548 | do { |
0a00ffdb |
549 | SV *sv = (SV*)SvRV(*svp); |
7d901afa |
550 | sv_setiv(sv, t->tid); |
199100c8 |
551 | SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
7d901afa |
552 | SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
553 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
554 | t = t->next; |
0a00ffdb |
555 | svp++; |
7d901afa |
556 | } while (t != thr); |
50112d62 |
557 | /* */ |
7d901afa |
558 | MUTEX_UNLOCK(&threads_mutex); |
559 | /* Truncate any unneeded slots in av */ |
50112d62 |
560 | av_fill(av, n - 1); |
7d901afa |
561 | /* Finally, push all the new objects onto the stack and drop av */ |
924508f0 |
562 | EXTEND(SP, n); |
7d901afa |
563 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
564 | PUSHs(*svp); |
565 | (void)sv_2mortal((SV*)av); |
f0f333f4 |
566 | #endif |
7d901afa |
567 | |
568 | |
f152979c |
569 | MODULE = Thread PACKAGE = Thread::Signal |
570 | |
571 | void |
572 | kill_sighandler_thread() |
573 | PPCODE: |
3aeed370 |
574 | write(sig_pipe[1], "\0", 1); |
f152979c |
575 | PUSHs(&sv_yes); |
576 | |
577 | void |
578 | init_thread_signals() |
579 | PPCODE: |
580 | sighandlerp = handle_thread_signal; |
581 | if (pipe(sig_pipe) == -1) |
582 | XSRETURN_UNDEF; |
583 | PUSHs(&sv_yes); |
584 | |
3aeed370 |
585 | void |
f152979c |
586 | await_signal() |
587 | PREINIT: |
3aeed370 |
588 | unsigned char c; |
ea0efc06 |
589 | SSize_t ret; |
f152979c |
590 | CODE: |
591 | do { |
3aeed370 |
592 | ret = read(sig_pipe[0], &c, 1); |
f152979c |
593 | } while (ret == -1 && errno == EINTR); |
594 | if (ret == -1) |
595 | croak("panic: await_signal"); |
3aeed370 |
596 | ST(0) = sv_newmortal(); |
597 | if (ret) |
598 | sv_setsv(ST(0), c ? psig_ptr[c] : &sv_no); |
599 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
600 | "await_signal returning %s\n", SvPEEK(ST(0)));); |
4e35701f |
601 | |
458fb581 |
602 | MODULE = Thread PACKAGE = Thread::Specific |
603 | |
604 | void |
605 | data(classname = "Thread::Specific") |
606 | char * classname |
607 | PPCODE: |
fb223100 |
608 | #ifdef USE_THREADS |
458fb581 |
609 | if (AvFILL(thr->specific) == -1) { |
610 | GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); |
611 | av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); |
612 | } |
613 | XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); |
fb223100 |
614 | #endif |