Commit | Line | Data |
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d9bb3666 MB |
1 | #include "EXTERN.h" |
2 | #include "perl.h" | |
3 | #include "XSUB.h" | |
4 | ||
7d901afa MB |
5 | /* Magic signature for Thread's mg_private is "Th" */ |
6 | #define Thread_MAGIC_SIGNATURE 0x5468 | |
7 | ||
f0f333f4 NIS |
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 NIS |
16 | |
17 | #ifndef THREAD_RET_TYPE | |
f0f333f4 NIS |
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 MB |
26 | DEBUG_L(WITH_THR(PerlIO_printf(PerlIO_stderr(), |
27 | "%p: remove_thread %p\n", thr, t))); | |
533c011a | 28 | MUTEX_LOCK(&PL_threads_mutex); |
0a00ffdb | 29 | MUTEX_DESTROY(&t->mutex); |
533c011a | 30 | PL_nthreads--; |
7d901afa MB |
31 | t->prev->next = t->next; |
32 | t->next->prev = t->prev; | |
533c011a NIS |
33 | COND_BROADCAST(&PL_nthreads_cond); |
34 | MUTEX_UNLOCK(&PL_threads_mutex); | |
f0f333f4 | 35 | #endif |
7d901afa MB |
36 | } |
37 | ||
ea0efc06 | 38 | static THREAD_RET_TYPE |
f0f333f4 | 39 | threadstart(void *arg) |
d9bb3666 | 40 | { |
f0f333f4 | 41 | #ifdef USE_THREADS |
783070da MB |
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 MB |
49 | int i; |
50 | ||
683929b4 MB |
51 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
52 | thr, SvPEEK(TOPs))); | |
783070da MB |
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 MB |
81 | Thread thr = (Thread) arg; |
82 | LOGOP myop; | |
4e35701f | 83 | djSP; |
d9bb3666 | 84 | I32 oldmark = TOPMARK; |
533c011a | 85 | I32 oldscope = PL_scopestack_ix; |
d9bb3666 | 86 | I32 retval; |
458fb581 MB |
87 | SV *sv; |
88 | AV *av = newAV(); | |
14fcddff | 89 | int i, ret; |
783070da | 90 | dJMPENV; |
0b9678a8 NIS |
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 MB |
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 MB |
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 MB |
102 | MUTEX_LOCK(&thr->mutex); |
103 | MUTEX_UNLOCK(&thr->mutex); | |
d9bb3666 | 104 | |
d9bb3666 MB |
105 | /* |
106 | * It's safe to wait until now to set the thread-specific pointer | |
52e1cb5e JH |
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 MB |
113 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
114 | thr, SvPEEK(TOPs))); | |
783070da | 115 | |
458fb581 MB |
116 | sv = POPs; |
117 | PUTBACK; | |
118 | perl_call_sv(sv, G_ARRAY|G_EVAL); | |
734689b1 | 119 | SPAGAIN; |
533c011a NIS |
120 | retval = SP - (PL_stack_base + oldmark); |
121 | SP = PL_stack_base + oldmark + 1; | |
458fb581 MB |
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 MB |
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 MB |
135 | } |
136 | } STMT_END); | |
137 | av_store(av, 0, &sv_yes); | |
924508f0 GS |
138 | for (i = 1; i <= retval; i++, SP++) |
139 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); | |
458fb581 MB |
140 | } |
141 | ||
d9bb3666 | 142 | finishoff: |
783070da MB |
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 MB |
150 | SvREFCNT_dec(thr->errsv); |
151 | SvREFCNT_dec(thr->errhv); | |
5c0ca799 | 152 | |
533c011a NIS |
153 | Safefree(PL_markstack); |
154 | Safefree(PL_scopestack); | |
155 | Safefree(PL_savestack); | |
156 | Safefree(PL_retstack); | |
d9bb3666 | 157 | Safefree(cxstack); |
533c011a NIS |
158 | Safefree(PL_tmps_stack); |
159 | Safefree(PL_ofs); | |
d9bb3666 | 160 | |
533c011a NIS |
161 | SvREFCNT_dec(PL_rs); |
162 | SvREFCNT_dec(PL_nrs); | |
163 | SvREFCNT_dec(PL_statname); | |
164 | Safefree(PL_screamfirst); | |
165 | Safefree(PL_screamnext); | |
166 | Safefree(PL_reg_start_tmp); | |
167 | SvREFCNT_dec(PL_lastscream); | |
5c0ca799 | 168 | |
14fcddff | 169 | MUTEX_LOCK(&thr->mutex); |
50112d62 MB |
170 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
171 | "%p: threadstart finishing: state is %u\n", | |
172 | thr, ThrSTATE(thr))); | |
14fcddff MB |
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 MB |
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 MB |
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 MB |
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 MB |
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 MB |
201 | /* us unless we're detached, in which */ |
202 | /* case noone sees the value anyway. */ | |
783070da | 203 | #endif |
f0f333f4 NIS |
204 | #else |
205 | return THREAD_RET_CAST(NULL); | |
206 | #endif | |
d9bb3666 MB |
207 | } |
208 | ||
683929b4 | 209 | static SV * |
458fb581 | 210 | newthread (SV *startsv, AV *initargs, char *classname) |
d9bb3666 | 211 | { |
f0f333f4 | 212 | #ifdef USE_THREADS |
d9bb3666 MB |
213 | dSP; |
214 | Thread savethread; | |
215 | int i; | |
683929b4 | 216 | SV *sv; |
ea0efc06 MB |
217 | int err; |
218 | #ifndef THREAD_CREATE | |
940cb80d MB |
219 | static pthread_attr_t attr; |
220 | static int attr_inited = 0; | |
f152979c | 221 | sigset_t fullmask, oldmask; |
ea0efc06 | 222 | #endif |
d9bb3666 MB |
223 | |
224 | savethread = thr; | |
a863c7d1 | 225 | thr = new_struct_thread(thr); |
d9bb3666 | 226 | SPAGAIN; |
50112d62 | 227 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
0b9678a8 NIS |
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 MB |
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 MB |
243 | sigfillset(&fullmask); |
244 | if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) | |
245 | croak("panic: sigprocmask"); | |
940cb80d MB |
246 | err = 0; |
247 | if (!attr_inited) { | |
248 | attr_inited = 1; | |
52e1cb5e | 249 | err = pthread_attr_init(&attr); |
940cb80d MB |
250 | if (err == 0) |
251 | err = pthread_attr_setdetachstate(&attr, ATTR_JOINABLE); | |
52e1cb5e | 252 | } |
940cb80d MB |
253 | if (err == 0) |
254 | err = pthread_create(&thr->self, &attr, threadstart, (void*) thr); | |
d9bb3666 | 255 | /* Go */ |
14fcddff | 256 | MUTEX_UNLOCK(&thr->mutex); |
ea0efc06 MB |
257 | #endif |
258 | if (err) { | |
0b9678a8 | 259 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
940cb80d MB |
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 MB |
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 MB |
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 NIS |
281 | #else |
282 | croak("No threads in this perl"); | |
283 | return &sv_undef; | |
284 | #endif | |
d9bb3666 MB |
285 | } |
286 | ||
f0f333f4 NIS |
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 MB |
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 MB |
301 | } |
302 | ||
d9bb3666 | 303 | MODULE = Thread PACKAGE = Thread |
0b9678a8 | 304 | PROTOTYPES: DISABLE |
d9bb3666 | 305 | |
683929b4 | 306 | void |
458fb581 MB |
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 MB |
313 | |
314 | void | |
d9bb3666 MB |
315 | join(t) |
316 | Thread t | |
317 | AV * av = NO_INIT | |
318 | int i = NO_INIT | |
319 | PPCODE: | |
f0f333f4 | 320 | #ifdef USE_THREADS |
7d901afa MB |
321 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", |
322 | thr, t, ThrSTATE(t));); | |
50112d62 MB |
323 | MUTEX_LOCK(&t->mutex); |
324 | switch (ThrSTATE(t)) { | |
14fcddff MB |
325 | case THRf_R_JOINABLE: |
326 | case THRf_R_JOINED: | |
50112d62 MB |
327 | ThrSETSTATE(t, THRf_R_JOINED); |
328 | MUTEX_UNLOCK(&t->mutex); | |
14fcddff MB |
329 | break; |
330 | case THRf_ZOMBIE: | |
50112d62 MB |
331 | ThrSETSTATE(t, THRf_DEAD); |
332 | MUTEX_UNLOCK(&t->mutex); | |
333 | remove_thread(t); | |
14fcddff MB |
334 | break; |
335 | default: | |
50112d62 | 336 | MUTEX_UNLOCK(&t->mutex); |
14fcddff MB |
337 | croak("can't join with thread"); |
338 | /* NOTREACHED */ | |
339 | } | |
ea0efc06 | 340 | JOIN(t, &av); |
7d901afa | 341 | |
458fb581 MB |
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 MB |
354 | |
355 | void | |
734689b1 | 356 | detach(t) |
d9bb3666 MB |
357 | Thread t |
358 | CODE: | |
f0f333f4 | 359 | #ifdef USE_THREADS |
7d901afa MB |
360 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", |
361 | thr, t, ThrSTATE(t));); | |
50112d62 MB |
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 MB |
370 | break; |
371 | case THRf_ZOMBIE: | |
50112d62 | 372 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa | 373 | DETACH(t); |
50112d62 MB |
374 | MUTEX_UNLOCK(&t->mutex); |
375 | remove_thread(t); | |
14fcddff MB |
376 | break; |
377 | default: | |
50112d62 | 378 | MUTEX_UNLOCK(&t->mutex); |
14fcddff MB |
379 | croak("can't detach thread"); |
380 | /* NOTREACHED */ | |
734689b1 | 381 | } |
f0f333f4 | 382 | #endif |
d9bb3666 MB |
383 | |
384 | void | |
7d901afa MB |
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 MB |
398 | |
399 | void | |
458fb581 MB |
400 | self(classname) |
401 | char * classname | |
7d901afa MB |
402 | PREINIT: |
403 | SV *sv; | |
f0f333f4 NIS |
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 MB |
409 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
410 | gv_stashpv(classname, TRUE)))); | |
f0f333f4 | 411 | #endif |
7d901afa | 412 | |
50112d62 MB |
413 | U32 |
414 | tid(t) | |
415 | Thread t | |
416 | CODE: | |
f0f333f4 | 417 | #ifdef USE_THREADS |
50112d62 MB |
418 | MUTEX_LOCK(&t->mutex); |
419 | RETVAL = t->tid; | |
420 | MUTEX_UNLOCK(&t->mutex); | |
f0f333f4 NIS |
421 | #else |
422 | RETVAL = 0; | |
423 | #endif | |
50112d62 MB |
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 NIS |
436 | { |
437 | #ifdef USE_THREADS | |
ea0efc06 | 438 | YIELD; |
f0f333f4 NIS |
439 | #endif |
440 | } | |
d9bb3666 MB |
441 | |
442 | void | |
734689b1 MB |
443 | cond_wait(sv) |
444 | SV * sv | |
445 | MAGIC * mg = NO_INIT | |
f0f333f4 NIS |
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 MB |
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 MB |
460 | while (MgOWNER(mg)) |
461 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
734689b1 MB |
462 | MgOWNER(mg) = thr; |
463 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
f0f333f4 NIS |
464 | #endif |
465 | ||
734689b1 MB |
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 MB |
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 MB |
486 | void |
487 | cond_broadcast(sv) | |
488 | SV * sv | |
489 | MAGIC * mg = NO_INIT | |
f0f333f4 NIS |
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 MB |
496 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", |
497 | thr, sv)); | |
734689b1 MB |
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 MB |
508 | list(classname) |
509 | char * classname | |
7d901afa MB |
510 | PREINIT: |
511 | Thread t; | |
512 | AV * av; | |
513 | SV ** svp; | |
514 | int n = 0; | |
515 | PPCODE: | |
f0f333f4 | 516 | #ifdef USE_THREADS |
7d901afa MB |
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 | */ | |
533c011a | 522 | MUTEX_LOCK(&PL_threads_mutex); |
7d901afa | 523 | do { |
533c011a NIS |
524 | n = PL_nthreads; |
525 | MUTEX_UNLOCK(&PL_threads_mutex); | |
7d901afa MB |
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 MB |
534 | } |
535 | } | |
533c011a NIS |
536 | MUTEX_LOCK(&PL_threads_mutex); |
537 | } while (n < PL_nthreads); | |
538 | n = PL_nthreads; /* Get the final correct value */ | |
7d901afa MB |
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 MB |
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 | /* */ |
533c011a | 558 | MUTEX_UNLOCK(&PL_threads_mutex); |
7d901afa | 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 MB |
563 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
564 | PUSHs(*svp); | |
565 | (void)sv_2mortal((SV*)av); | |
f0f333f4 | 566 | #endif |
7d901afa MB |
567 | |
568 | ||
f152979c MB |
569 | MODULE = Thread PACKAGE = Thread::Signal |
570 | ||
571 | void | |
572 | kill_sighandler_thread() | |
573 | PPCODE: | |
3aeed370 | 574 | write(sig_pipe[1], "\0", 1); |
f152979c MB |
575 | PUSHs(&sv_yes); |
576 | ||
577 | void | |
578 | init_thread_signals() | |
579 | PPCODE: | |
533c011a | 580 | PL_sighandlerp = handle_thread_signal; |
f152979c MB |
581 | if (pipe(sig_pipe) == -1) |
582 | XSRETURN_UNDEF; | |
583 | PUSHs(&sv_yes); | |
584 | ||
3aeed370 | 585 | void |
f152979c MB |
586 | await_signal() |
587 | PREINIT: | |
3aeed370 | 588 | unsigned char c; |
ea0efc06 | 589 | SSize_t ret; |
f152979c MB |
590 | CODE: |
591 | do { | |
3aeed370 | 592 | ret = read(sig_pipe[0], &c, 1); |
f152979c MB |
593 | } while (ret == -1 && errno == EINTR); |
594 | if (ret == -1) | |
595 | croak("panic: await_signal"); | |
3aeed370 MB |
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 MB |
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 MB |
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 |