Commit | Line | Data |
---|---|---|
c5be433b | 1 | #define PERL_NO_GET_CONTEXT |
d9bb3666 MB |
2 | #include "EXTERN.h" |
3 | #include "perl.h" | |
4 | #include "XSUB.h" | |
5 | ||
7d901afa MB |
6 | /* Magic signature for Thread's mg_private is "Th" */ |
7 | #define Thread_MAGIC_SIGNATURE 0x5468 | |
8 | ||
f0f333f4 NIS |
9 | #ifdef __cplusplus |
10 | #ifdef I_UNISTD | |
11 | #include <unistd.h> | |
12 | #endif | |
13 | #endif | |
14 | #include <fcntl.h> | |
15 | ||
85ced67f | 16 | static int sig_pipe[2]; |
f0f333f4 NIS |
17 | |
18 | #ifndef THREAD_RET_TYPE | |
f0f333f4 NIS |
19 | #define THREAD_RET_TYPE void * |
20 | #define THREAD_RET_CAST(x) ((THREAD_RET_TYPE) x) | |
458fb581 | 21 | #endif |
683929b4 | 22 | |
7d901afa | 23 | static void |
cea2e8a9 | 24 | remove_thread(pTHX_ struct perl_thread *t) |
7d901afa | 25 | { |
f0f333f4 | 26 | #ifdef USE_THREADS |
bf49b057 | 27 | DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log, |
7d901afa | 28 | "%p: remove_thread %p\n", thr, t))); |
533c011a | 29 | MUTEX_LOCK(&PL_threads_mutex); |
0a00ffdb | 30 | MUTEX_DESTROY(&t->mutex); |
533c011a | 31 | PL_nthreads--; |
7d901afa MB |
32 | t->prev->next = t->next; |
33 | t->next->prev = t->prev; | |
0655b981 | 34 | SvREFCNT_dec(t->oursv); |
533c011a NIS |
35 | COND_BROADCAST(&PL_nthreads_cond); |
36 | MUTEX_UNLOCK(&PL_threads_mutex); | |
f0f333f4 | 37 | #endif |
7d901afa MB |
38 | } |
39 | ||
ea0efc06 | 40 | static THREAD_RET_TYPE |
f0f333f4 | 41 | threadstart(void *arg) |
d9bb3666 | 42 | { |
f0f333f4 | 43 | #ifdef USE_THREADS |
783070da MB |
44 | #ifdef FAKE_THREADS |
45 | Thread savethread = thr; | |
46 | LOGOP myop; | |
47 | dSP; | |
6b88bc9c | 48 | I32 oldscope = PL_scopestack_ix; |
783070da | 49 | I32 retval; |
458fb581 | 50 | AV *av; |
783070da MB |
51 | int i; |
52 | ||
bf49b057 | 53 | DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", |
683929b4 | 54 | thr, SvPEEK(TOPs))); |
783070da MB |
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 */ | |
6b88bc9c GS |
65 | PL_op = (OP*)&myop; |
66 | Zero(PL_op, 1, LOGOP); | |
783070da MB |
67 | myop.op_flags = OPf_STACKED; |
68 | myop.op_next = Nullop; | |
69 | myop.op_flags |= OPf_KNOW; | |
70 | myop.op_flags |= OPf_WANT_LIST; | |
6b88bc9c | 71 | PL_op = pp_entersub(ARGS); |
8b73bbec | 72 | DEBUG_S(if (!PL_op) |
bf49b057 | 73 | PerlIO_printf(Perl_debug_log, "thread starts at Nullop\n")); |
783070da MB |
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 MB |
83 | Thread thr = (Thread) arg; |
84 | LOGOP myop; | |
4e35701f | 85 | djSP; |
d9bb3666 | 86 | I32 oldmark = TOPMARK; |
533c011a | 87 | I32 oldscope = PL_scopestack_ix; |
d9bb3666 | 88 | I32 retval; |
458fb581 | 89 | SV *sv; |
0ae6046c | 90 | AV *av; |
14fcddff | 91 | int i, ret; |
783070da | 92 | dJMPENV; |
0ae6046c GS |
93 | |
94 | #if defined(MULTIPLICITY) | |
95 | PERL_SET_INTERP(thr->interp); | |
96 | #endif | |
97 | ||
bf49b057 | 98 | DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p waiting to start\n", |
0b9678a8 | 99 | thr)); |
783070da | 100 | |
0b9678a8 | 101 | /* Don't call *anything* requiring dTHR until after SET_THR() */ |
d9bb3666 MB |
102 | /* |
103 | * Wait until our creator releases us. If we didn't do this, then | |
104 | * it would be potentially possible for out thread to carry on and | |
105 | * do stuff before our creator fills in our "self" field. For example, | |
ea0efc06 MB |
106 | * if we went and created another thread which tried to JOIN with us, |
107 | * then we'd be in a mess. | |
d9bb3666 | 108 | */ |
50112d62 MB |
109 | MUTEX_LOCK(&thr->mutex); |
110 | MUTEX_UNLOCK(&thr->mutex); | |
d9bb3666 | 111 | |
d9bb3666 MB |
112 | /* |
113 | * It's safe to wait until now to set the thread-specific pointer | |
52e1cb5e JH |
114 | * from our pthread_t structure to our struct perl_thread, since |
115 | * we're the only thread who can get at it anyway. | |
d9bb3666 | 116 | */ |
ea0efc06 | 117 | SET_THR(thr); |
d9bb3666 | 118 | |
783070da | 119 | /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */ |
bf49b057 | 120 | DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", |
683929b4 | 121 | thr, SvPEEK(TOPs))); |
783070da | 122 | |
0ae6046c | 123 | av = newAV(); |
458fb581 MB |
124 | sv = POPs; |
125 | PUTBACK; | |
901b18f1 GS |
126 | ENTER; |
127 | SAVETMPS; | |
458fb581 | 128 | perl_call_sv(sv, G_ARRAY|G_EVAL); |
734689b1 | 129 | SPAGAIN; |
533c011a NIS |
130 | retval = SP - (PL_stack_base + oldmark); |
131 | SP = PL_stack_base + oldmark + 1; | |
458fb581 MB |
132 | if (SvCUR(thr->errsv)) { |
133 | MUTEX_LOCK(&thr->mutex); | |
134 | thr->flags |= THRf_DID_DIE; | |
135 | MUTEX_UNLOCK(&thr->mutex); | |
6b88bc9c | 136 | av_store(av, 0, &PL_sv_no); |
458fb581 | 137 | av_store(av, 1, newSVsv(thr->errsv)); |
bf49b057 | 138 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p died: %s\n", |
6b88bc9c | 139 | thr, SvPV(thr->errsv, PL_na))); |
0655b981 GS |
140 | } |
141 | else { | |
8b73bbec | 142 | DEBUG_S(STMT_START { |
458fb581 | 143 | for (i = 1; i <= retval; i++) { |
bf49b057 | 144 | PerlIO_printf(Perl_debug_log, "%p return[%d] = %s\n", |
924508f0 | 145 | thr, i, SvPEEK(SP[i - 1])); |
458fb581 MB |
146 | } |
147 | } STMT_END); | |
6b88bc9c | 148 | av_store(av, 0, &PL_sv_yes); |
924508f0 GS |
149 | for (i = 1; i <= retval; i++, SP++) |
150 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); | |
458fb581 | 151 | } |
572eda1c | 152 | FREETMPS; |
901b18f1 | 153 | LEAVE; |
458fb581 | 154 | |
d9bb3666 | 155 | finishoff: |
783070da MB |
156 | #if 0 |
157 | /* removed for debug */ | |
6b88bc9c | 158 | SvREFCNT_dec(PL_curstack); |
783070da | 159 | #endif |
199100c8 | 160 | SvREFCNT_dec(thr->cvcache); |
54b9620d | 161 | SvREFCNT_dec(thr->threadsv); |
554b3eca | 162 | SvREFCNT_dec(thr->specific); |
38a03e6e | 163 | SvREFCNT_dec(thr->errsv); |
5c0ca799 | 164 | |
f7ac0805 | 165 | /*Safefree(cxstack);*/ |
84fee439 NIS |
166 | while (PL_curstackinfo->si_next) |
167 | PL_curstackinfo = PL_curstackinfo->si_next; | |
168 | while (PL_curstackinfo) { | |
169 | PERL_SI *p = PL_curstackinfo->si_prev; | |
170 | SvREFCNT_dec(PL_curstackinfo->si_stack); | |
171 | Safefree(PL_curstackinfo->si_cxstack); | |
172 | Safefree(PL_curstackinfo); | |
173 | PL_curstackinfo = p; | |
f7ac0805 | 174 | } |
84fee439 NIS |
175 | Safefree(PL_markstack); |
176 | Safefree(PL_scopestack); | |
177 | Safefree(PL_savestack); | |
178 | Safefree(PL_retstack); | |
179 | Safefree(PL_tmps_stack); | |
180 | Safefree(PL_ofs); | |
d9bb3666 | 181 | |
84fee439 NIS |
182 | SvREFCNT_dec(PL_rs); |
183 | SvREFCNT_dec(PL_nrs); | |
184 | SvREFCNT_dec(PL_statname); | |
5a844595 | 185 | SvREFCNT_dec(PL_errors); |
84fee439 NIS |
186 | Safefree(PL_screamfirst); |
187 | Safefree(PL_screamnext); | |
188 | Safefree(PL_reg_start_tmp); | |
189 | SvREFCNT_dec(PL_lastscream); | |
901b18f1 | 190 | SvREFCNT_dec(PL_defoutgv); |
82ba1be6 | 191 | Safefree(PL_reg_poscache); |
5c0ca799 | 192 | |
14fcddff | 193 | MUTEX_LOCK(&thr->mutex); |
bf49b057 | 194 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
50112d62 MB |
195 | "%p: threadstart finishing: state is %u\n", |
196 | thr, ThrSTATE(thr))); | |
14fcddff MB |
197 | switch (ThrSTATE(thr)) { |
198 | case THRf_R_JOINABLE: | |
199 | ThrSETSTATE(thr, THRf_ZOMBIE); | |
200 | MUTEX_UNLOCK(&thr->mutex); | |
bf49b057 | 201 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
14fcddff MB |
202 | "%p: R_JOINABLE thread finished\n", thr)); |
203 | break; | |
204 | case THRf_R_JOINED: | |
205 | ThrSETSTATE(thr, THRf_DEAD); | |
206 | MUTEX_UNLOCK(&thr->mutex); | |
cea2e8a9 | 207 | remove_thread(aTHX_ thr); |
bf49b057 | 208 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
14fcddff MB |
209 | "%p: R_JOINED thread finished\n", thr)); |
210 | break; | |
50112d62 | 211 | case THRf_R_DETACHED: |
683929b4 | 212 | ThrSETSTATE(thr, THRf_DEAD); |
14fcddff | 213 | MUTEX_UNLOCK(&thr->mutex); |
458fb581 | 214 | SvREFCNT_dec(av); |
bf49b057 | 215 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
14fcddff | 216 | "%p: DETACHED thread finished\n", thr)); |
cea2e8a9 | 217 | remove_thread(aTHX_ thr); /* This might trigger main thread to finish */ |
14fcddff MB |
218 | break; |
219 | default: | |
220 | MUTEX_UNLOCK(&thr->mutex); | |
221 | croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); | |
222 | /* NOTREACHED */ | |
734689b1 | 223 | } |
458fb581 | 224 | return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
ea0efc06 MB |
225 | /* us unless we're detached, in which */ |
226 | /* case noone sees the value anyway. */ | |
783070da | 227 | #endif |
f0f333f4 NIS |
228 | #else |
229 | return THREAD_RET_CAST(NULL); | |
230 | #endif | |
d9bb3666 MB |
231 | } |
232 | ||
683929b4 | 233 | static SV * |
cea2e8a9 | 234 | newthread (pTHX_ SV *startsv, AV *initargs, char *classname) |
d9bb3666 | 235 | { |
f0f333f4 | 236 | #ifdef USE_THREADS |
d9bb3666 MB |
237 | dSP; |
238 | Thread savethread; | |
239 | int i; | |
683929b4 | 240 | SV *sv; |
ea0efc06 MB |
241 | int err; |
242 | #ifndef THREAD_CREATE | |
940cb80d MB |
243 | static pthread_attr_t attr; |
244 | static int attr_inited = 0; | |
f152979c | 245 | sigset_t fullmask, oldmask; |
13666627 | 246 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
b86a2fa7 | 247 | #endif |
1cfa4ec7 | 248 | |
d9bb3666 | 249 | savethread = thr; |
a863c7d1 | 250 | thr = new_struct_thread(thr); |
c4e7bd8d GS |
251 | /* temporarily pretend to be the child thread in case the |
252 | * XPUSHs() below want to grow the child's stack. This is | |
253 | * safe, since the other thread is not yet created, and we | |
254 | * are the only ones who know about it */ | |
255 | SET_THR(thr); | |
d9bb3666 | 256 | SPAGAIN; |
bf49b057 | 257 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0b9678a8 NIS |
258 | "%p: newthread (%p), tid is %u, preparing stack\n", |
259 | savethread, thr, thr->tid)); | |
d9bb3666 | 260 | /* The following pushes the arg list and startsv onto the *new* stack */ |
924508f0 | 261 | PUSHMARK(SP); |
d9bb3666 | 262 | /* Could easily speed up the following greatly */ |
734689b1 | 263 | for (i = 0; i <= AvFILL(initargs); i++) |
d9bb3666 MB |
264 | XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); |
265 | XPUSHs(SvREFCNT_inc(startsv)); | |
266 | PUTBACK; | |
b099ddc0 GS |
267 | |
268 | /* On your marks... */ | |
c4e7bd8d | 269 | SET_THR(savethread); |
b099ddc0 GS |
270 | MUTEX_LOCK(&thr->mutex); |
271 | ||
ea0efc06 | 272 | #ifdef THREAD_CREATE |
f0f333f4 | 273 | err = THREAD_CREATE(thr, threadstart); |
783070da | 274 | #else |
ea0efc06 | 275 | /* Get set... */ |
f152979c MB |
276 | sigfillset(&fullmask); |
277 | if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) | |
278 | croak("panic: sigprocmask"); | |
940cb80d MB |
279 | err = 0; |
280 | if (!attr_inited) { | |
281 | attr_inited = 1; | |
52e1cb5e | 282 | err = pthread_attr_init(&attr); |
0d85d877 | 283 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
940cb80d | 284 | if (err == 0) |
0d85d877 JH |
285 | err = PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
286 | ||
287 | # else | |
1cfa4ec7 | 288 | croak("panic: can't pthread_attr_setdetachstate"); |
0d85d877 | 289 | # endif |
52e1cb5e | 290 | } |
940cb80d | 291 | if (err == 0) |
0d85d877 | 292 | err = PTHREAD_CREATE(&thr->self, attr, threadstart, (void*) thr); |
ea0efc06 | 293 | #endif |
b099ddc0 | 294 | |
ea0efc06 | 295 | if (err) { |
b099ddc0 | 296 | MUTEX_UNLOCK(&thr->mutex); |
bf49b057 | 297 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
940cb80d MB |
298 | "%p: create of %p failed %d\n", |
299 | savethread, thr, err)); | |
ea0efc06 | 300 | /* Thread creation failed--clean up */ |
199100c8 | 301 | SvREFCNT_dec(thr->cvcache); |
cea2e8a9 | 302 | remove_thread(aTHX_ thr); |
ea0efc06 MB |
303 | for (i = 0; i <= AvFILL(initargs); i++) |
304 | SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); | |
305 | SvREFCNT_dec(startsv); | |
306 | return NULL; | |
307 | } | |
b099ddc0 | 308 | |
ea0efc06 MB |
309 | #ifdef THREAD_POST_CREATE |
310 | THREAD_POST_CREATE(thr); | |
311 | #else | |
f152979c MB |
312 | if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
313 | croak("panic: sigprocmask"); | |
783070da | 314 | #endif |
b099ddc0 | 315 | |
7d901afa | 316 | sv = newSViv(thr->tid); |
199100c8 | 317 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa | 318 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
b099ddc0 GS |
319 | sv = sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
320 | ||
321 | /* Go */ | |
322 | MUTEX_UNLOCK(&thr->mutex); | |
323 | ||
324 | return sv; | |
f0f333f4 NIS |
325 | #else |
326 | croak("No threads in this perl"); | |
6b88bc9c | 327 | return &PL_sv_undef; |
f0f333f4 | 328 | #endif |
d9bb3666 MB |
329 | } |
330 | ||
20ce7b12 | 331 | static Signal_t handle_thread_signal (int sig); |
f0f333f4 | 332 | |
f152979c | 333 | static Signal_t |
f0f333f4 | 334 | handle_thread_signal(int sig) |
f152979c | 335 | { |
c5be433b | 336 | dTHXo; |
3aeed370 MB |
337 | unsigned char c = (unsigned char) sig; |
338 | /* | |
339 | * We're not really allowed to call fprintf in a signal handler | |
340 | * so don't be surprised if this isn't robust while debugging | |
341 | * with -DL. | |
342 | */ | |
bf49b057 | 343 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
3aeed370 MB |
344 | "handle_thread_signal: got signal %d\n", sig);); |
345 | write(sig_pipe[1], &c, 1); | |
f152979c MB |
346 | } |
347 | ||
d9bb3666 | 348 | MODULE = Thread PACKAGE = Thread |
0b9678a8 | 349 | PROTOTYPES: DISABLE |
d9bb3666 | 350 | |
683929b4 | 351 | void |
458fb581 MB |
352 | new(classname, startsv, ...) |
353 | char * classname | |
d9bb3666 | 354 | SV * startsv |
734689b1 | 355 | AV * av = av_make(items - 2, &ST(2)); |
683929b4 | 356 | PPCODE: |
cea2e8a9 | 357 | XPUSHs(sv_2mortal(newthread(aTHX_ startsv, av, classname))); |
d9bb3666 MB |
358 | |
359 | void | |
d9bb3666 MB |
360 | join(t) |
361 | Thread t | |
362 | AV * av = NO_INIT | |
363 | int i = NO_INIT | |
364 | PPCODE: | |
f0f333f4 | 365 | #ifdef USE_THREADS |
272b4648 GS |
366 | if (t == thr) |
367 | croak("Attempt to join self"); | |
bf49b057 | 368 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: joining %p (state %u)\n", |
7d901afa | 369 | thr, t, ThrSTATE(t));); |
50112d62 MB |
370 | MUTEX_LOCK(&t->mutex); |
371 | switch (ThrSTATE(t)) { | |
14fcddff MB |
372 | case THRf_R_JOINABLE: |
373 | case THRf_R_JOINED: | |
50112d62 MB |
374 | ThrSETSTATE(t, THRf_R_JOINED); |
375 | MUTEX_UNLOCK(&t->mutex); | |
14fcddff MB |
376 | break; |
377 | case THRf_ZOMBIE: | |
50112d62 MB |
378 | ThrSETSTATE(t, THRf_DEAD); |
379 | MUTEX_UNLOCK(&t->mutex); | |
cea2e8a9 | 380 | remove_thread(aTHX_ t); |
14fcddff MB |
381 | break; |
382 | default: | |
50112d62 | 383 | MUTEX_UNLOCK(&t->mutex); |
14fcddff MB |
384 | croak("can't join with thread"); |
385 | /* NOTREACHED */ | |
386 | } | |
ea0efc06 | 387 | JOIN(t, &av); |
7d901afa | 388 | |
0655b981 GS |
389 | sv_2mortal((SV*)av); |
390 | ||
458fb581 MB |
391 | if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
392 | /* Could easily speed up the following if necessary */ | |
393 | for (i = 1; i <= AvFILL(av); i++) | |
0655b981 GS |
394 | XPUSHs(*av_fetch(av, i, FALSE)); |
395 | } | |
396 | else { | |
2d8e6c8d GS |
397 | STRLEN n_a; |
398 | char *mess = SvPV(*av_fetch(av, 1, FALSE), n_a); | |
bf49b057 | 399 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
458fb581 MB |
400 | "%p: join propagating die message: %s\n", |
401 | thr, mess)); | |
402 | croak(mess); | |
403 | } | |
f0f333f4 | 404 | #endif |
d9bb3666 MB |
405 | |
406 | void | |
734689b1 | 407 | detach(t) |
d9bb3666 MB |
408 | Thread t |
409 | CODE: | |
f0f333f4 | 410 | #ifdef USE_THREADS |
bf49b057 | 411 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: detaching %p (state %u)\n", |
7d901afa | 412 | thr, t, ThrSTATE(t));); |
50112d62 MB |
413 | MUTEX_LOCK(&t->mutex); |
414 | switch (ThrSTATE(t)) { | |
14fcddff | 415 | case THRf_R_JOINABLE: |
50112d62 | 416 | ThrSETSTATE(t, THRf_R_DETACHED); |
14fcddff | 417 | /* fall through */ |
50112d62 | 418 | case THRf_R_DETACHED: |
14fcddff | 419 | DETACH(t); |
50112d62 | 420 | MUTEX_UNLOCK(&t->mutex); |
14fcddff MB |
421 | break; |
422 | case THRf_ZOMBIE: | |
50112d62 | 423 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa | 424 | DETACH(t); |
50112d62 | 425 | MUTEX_UNLOCK(&t->mutex); |
cea2e8a9 | 426 | remove_thread(aTHX_ t); |
14fcddff MB |
427 | break; |
428 | default: | |
50112d62 | 429 | MUTEX_UNLOCK(&t->mutex); |
14fcddff MB |
430 | croak("can't detach thread"); |
431 | /* NOTREACHED */ | |
734689b1 | 432 | } |
f0f333f4 | 433 | #endif |
d9bb3666 MB |
434 | |
435 | void | |
7d901afa MB |
436 | equal(t1, t2) |
437 | Thread t1 | |
438 | Thread t2 | |
439 | PPCODE: | |
6b88bc9c | 440 | PUSHs((t1 == t2) ? &PL_sv_yes : &PL_sv_no); |
7d901afa MB |
441 | |
442 | void | |
443 | flags(t) | |
444 | Thread t | |
445 | PPCODE: | |
f0f333f4 | 446 | #ifdef USE_THREADS |
7d901afa | 447 | PUSHs(sv_2mortal(newSViv(t->flags))); |
f0f333f4 | 448 | #endif |
7d901afa MB |
449 | |
450 | void | |
458fb581 MB |
451 | self(classname) |
452 | char * classname | |
7d901afa MB |
453 | PREINIT: |
454 | SV *sv; | |
f0f333f4 NIS |
455 | PPCODE: |
456 | #ifdef USE_THREADS | |
7d901afa | 457 | sv = newSViv(thr->tid); |
199100c8 | 458 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa | 459 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 MB |
460 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
461 | gv_stashpv(classname, TRUE)))); | |
f0f333f4 | 462 | #endif |
7d901afa | 463 | |
50112d62 MB |
464 | U32 |
465 | tid(t) | |
466 | Thread t | |
467 | CODE: | |
f0f333f4 | 468 | #ifdef USE_THREADS |
50112d62 MB |
469 | MUTEX_LOCK(&t->mutex); |
470 | RETVAL = t->tid; | |
471 | MUTEX_UNLOCK(&t->mutex); | |
f0f333f4 NIS |
472 | #else |
473 | RETVAL = 0; | |
474 | #endif | |
50112d62 MB |
475 | OUTPUT: |
476 | RETVAL | |
477 | ||
478 | void | |
479 | DESTROY(t) | |
480 | SV * t | |
481 | PPCODE: | |
6b88bc9c | 482 | PUSHs(&PL_sv_yes); |
50112d62 | 483 | |
7d901afa | 484 | void |
734689b1 | 485 | yield() |
d9bb3666 | 486 | CODE: |
f0f333f4 NIS |
487 | { |
488 | #ifdef USE_THREADS | |
ea0efc06 | 489 | YIELD; |
f0f333f4 NIS |
490 | #endif |
491 | } | |
d9bb3666 MB |
492 | |
493 | void | |
734689b1 MB |
494 | cond_wait(sv) |
495 | SV * sv | |
496 | MAGIC * mg = NO_INIT | |
f0f333f4 NIS |
497 | CODE: |
498 | #ifdef USE_THREADS | |
2c127b02 | 499 | if (SvROK(sv)) |
734689b1 | 500 | sv = SvRV(sv); |
2c127b02 | 501 | |
734689b1 | 502 | mg = condpair_magic(sv); |
bf49b057 | 503 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_wait %p\n", thr, sv)); |
734689b1 MB |
504 | MUTEX_LOCK(MgMUTEXP(mg)); |
505 | if (MgOWNER(mg) != thr) { | |
506 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
507 | croak("cond_wait for lock that we don't own\n"); | |
508 | } | |
509 | MgOWNER(mg) = 0; | |
d3ef5668 | 510 | COND_SIGNAL(MgOWNERCONDP(mg)); |
734689b1 | 511 | COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
50112d62 MB |
512 | while (MgOWNER(mg)) |
513 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); | |
734689b1 MB |
514 | MgOWNER(mg) = thr; |
515 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
f0f333f4 NIS |
516 | #endif |
517 | ||
734689b1 MB |
518 | void |
519 | cond_signal(sv) | |
520 | SV * sv | |
521 | MAGIC * mg = NO_INIT | |
522 | CODE: | |
f0f333f4 | 523 | #ifdef USE_THREADS |
50112d62 | 524 | if (SvROK(sv)) |
734689b1 | 525 | sv = SvRV(sv); |
50112d62 | 526 | |
734689b1 | 527 | mg = condpair_magic(sv); |
bf49b057 | 528 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_signal %p\n",thr,sv)); |
734689b1 MB |
529 | MUTEX_LOCK(MgMUTEXP(mg)); |
530 | if (MgOWNER(mg) != thr) { | |
531 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
532 | croak("cond_signal for lock that we don't own\n"); | |
533 | } | |
534 | COND_SIGNAL(MgCONDP(mg)); | |
535 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
f0f333f4 | 536 | #endif |
d9bb3666 | 537 | |
734689b1 MB |
538 | void |
539 | cond_broadcast(sv) | |
540 | SV * sv | |
541 | MAGIC * mg = NO_INIT | |
f0f333f4 NIS |
542 | CODE: |
543 | #ifdef USE_THREADS | |
783070da | 544 | if (SvROK(sv)) |
734689b1 | 545 | sv = SvRV(sv); |
783070da | 546 | |
734689b1 | 547 | mg = condpair_magic(sv); |
bf49b057 | 548 | DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_broadcast %p\n", |
683929b4 | 549 | thr, sv)); |
734689b1 MB |
550 | MUTEX_LOCK(MgMUTEXP(mg)); |
551 | if (MgOWNER(mg) != thr) { | |
552 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
553 | croak("cond_broadcast for lock that we don't own\n"); | |
554 | } | |
555 | COND_BROADCAST(MgCONDP(mg)); | |
556 | MUTEX_UNLOCK(MgMUTEXP(mg)); | |
f0f333f4 | 557 | #endif |
f152979c | 558 | |
7d901afa | 559 | void |
458fb581 MB |
560 | list(classname) |
561 | char * classname | |
7d901afa MB |
562 | PREINIT: |
563 | Thread t; | |
564 | AV * av; | |
565 | SV ** svp; | |
566 | int n = 0; | |
567 | PPCODE: | |
f0f333f4 | 568 | #ifdef USE_THREADS |
7d901afa MB |
569 | av = newAV(); |
570 | /* | |
571 | * Iterate until we have enough dynamic storage for all threads. | |
572 | * We mustn't do any allocation while holding threads_mutex though. | |
573 | */ | |
533c011a | 574 | MUTEX_LOCK(&PL_threads_mutex); |
7d901afa | 575 | do { |
533c011a NIS |
576 | n = PL_nthreads; |
577 | MUTEX_UNLOCK(&PL_threads_mutex); | |
7d901afa MB |
578 | if (AvFILL(av) < n - 1) { |
579 | int i = AvFILL(av); | |
580 | for (i = AvFILL(av); i < n - 1; i++) { | |
581 | SV *sv = newSViv(0); /* fill in tid later */ | |
582 | sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ | |
583 | av_push(av, sv_bless(newRV_noinc(sv), | |
458fb581 | 584 | gv_stashpv(classname, TRUE))); |
50112d62 | 585 | |
7d901afa MB |
586 | } |
587 | } | |
533c011a NIS |
588 | MUTEX_LOCK(&PL_threads_mutex); |
589 | } while (n < PL_nthreads); | |
590 | n = PL_nthreads; /* Get the final correct value */ | |
7d901afa MB |
591 | |
592 | /* | |
593 | * At this point, there's enough room to fill in av. | |
594 | * Note that we are holding threads_mutex so the list | |
595 | * won't change out from under us but all the remaining | |
596 | * processing is "fast" (no blocking, malloc etc.) | |
597 | */ | |
598 | t = thr; | |
599 | svp = AvARRAY(av); | |
600 | do { | |
0a00ffdb | 601 | SV *sv = (SV*)SvRV(*svp); |
7d901afa | 602 | sv_setiv(sv, t->tid); |
199100c8 | 603 | SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
7d901afa MB |
604 | SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
605 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; | |
606 | t = t->next; | |
0a00ffdb | 607 | svp++; |
7d901afa | 608 | } while (t != thr); |
50112d62 | 609 | /* */ |
533c011a | 610 | MUTEX_UNLOCK(&PL_threads_mutex); |
7d901afa | 611 | /* Truncate any unneeded slots in av */ |
50112d62 | 612 | av_fill(av, n - 1); |
7d901afa | 613 | /* Finally, push all the new objects onto the stack and drop av */ |
924508f0 | 614 | EXTEND(SP, n); |
7d901afa MB |
615 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
616 | PUSHs(*svp); | |
617 | (void)sv_2mortal((SV*)av); | |
f0f333f4 | 618 | #endif |
7d901afa MB |
619 | |
620 | ||
f152979c MB |
621 | MODULE = Thread PACKAGE = Thread::Signal |
622 | ||
623 | void | |
624 | kill_sighandler_thread() | |
625 | PPCODE: | |
3aeed370 | 626 | write(sig_pipe[1], "\0", 1); |
6b88bc9c | 627 | PUSHs(&PL_sv_yes); |
f152979c MB |
628 | |
629 | void | |
630 | init_thread_signals() | |
631 | PPCODE: | |
533c011a | 632 | PL_sighandlerp = handle_thread_signal; |
f152979c MB |
633 | if (pipe(sig_pipe) == -1) |
634 | XSRETURN_UNDEF; | |
6b88bc9c | 635 | PUSHs(&PL_sv_yes); |
f152979c | 636 | |
3aeed370 | 637 | void |
f152979c MB |
638 | await_signal() |
639 | PREINIT: | |
3aeed370 | 640 | unsigned char c; |
ea0efc06 | 641 | SSize_t ret; |
f152979c MB |
642 | CODE: |
643 | do { | |
3aeed370 | 644 | ret = read(sig_pipe[0], &c, 1); |
f152979c MB |
645 | } while (ret == -1 && errno == EINTR); |
646 | if (ret == -1) | |
647 | croak("panic: await_signal"); | |
3aeed370 MB |
648 | ST(0) = sv_newmortal(); |
649 | if (ret) | |
22c35a8c | 650 | sv_setsv(ST(0), c ? PL_psig_ptr[c] : &PL_sv_no); |
bf49b057 | 651 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
3aeed370 | 652 | "await_signal returning %s\n", SvPEEK(ST(0)));); |
4e35701f | 653 | |
458fb581 MB |
654 | MODULE = Thread PACKAGE = Thread::Specific |
655 | ||
656 | void | |
657 | data(classname = "Thread::Specific") | |
658 | char * classname | |
659 | PPCODE: | |
fb223100 | 660 | #ifdef USE_THREADS |
458fb581 MB |
661 | if (AvFILL(thr->specific) == -1) { |
662 | GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); | |
663 | av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); | |
664 | } | |
665 | XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); | |
fb223100 | 666 | #endif |