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new thread should set current interp in TLS
[perl5.git] / ext / Thread / Thread.xs
CommitLineData
c5be433b 1#define PERL_NO_GET_CONTEXT
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2#include "EXTERN.h"
3#include "perl.h"
4#include "XSUB.h"
5
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6/* Magic signature for Thread's mg_private is "Th" */
7#define Thread_MAGIC_SIGNATURE 0x5468
8
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NIS
9#ifdef __cplusplus
10#ifdef I_UNISTD
11#include <unistd.h>
12#endif
13#endif
14#include <fcntl.h>
15
85ced67f 16static int sig_pipe[2];
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NIS
17
18#ifndef THREAD_RET_TYPE
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19#define THREAD_RET_TYPE void *
20#define THREAD_RET_CAST(x) ((THREAD_RET_TYPE) x)
458fb581 21#endif
683929b4 22
7d901afa 23static void
cea2e8a9 24remove_thread(pTHX_ struct perl_thread *t)
7d901afa 25{
f0f333f4 26#ifdef USE_THREADS
8b73bbec 27 DEBUG_S(WITH_THR(PerlIO_printf(PerlIO_stderr(),
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--;
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32 t->prev->next = t->next;
33 t->next->prev = t->prev;
533c011a
NIS
34 COND_BROADCAST(&PL_nthreads_cond);
35 MUTEX_UNLOCK(&PL_threads_mutex);
f0f333f4 36#endif
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37}
38
ea0efc06 39static THREAD_RET_TYPE
f0f333f4 40threadstart(void *arg)
d9bb3666 41{
f0f333f4 42#ifdef USE_THREADS
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43#ifdef FAKE_THREADS
44 Thread savethread = thr;
45 LOGOP myop;
46 dSP;
6b88bc9c 47 I32 oldscope = PL_scopestack_ix;
783070da 48 I32 retval;
458fb581 49 AV *av;
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50 int i;
51
8b73bbec 52 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n",
683929b4 53 thr, SvPEEK(TOPs)));
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54 thr = (Thread) arg;
55 savemark = TOPMARK;
56 thr->prev = thr->prev_run = savethread;
57 thr->next = savethread->next;
58 thr->next_run = savethread->next_run;
59 savethread->next = savethread->next_run = thr;
60 thr->wait_queue = 0;
61 thr->private = 0;
62
63 /* Now duplicate most of perl_call_sv but with a few twists */
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64 PL_op = (OP*)&myop;
65 Zero(PL_op, 1, LOGOP);
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66 myop.op_flags = OPf_STACKED;
67 myop.op_next = Nullop;
68 myop.op_flags |= OPf_KNOW;
69 myop.op_flags |= OPf_WANT_LIST;
6b88bc9c 70 PL_op = pp_entersub(ARGS);
8b73bbec 71 DEBUG_S(if (!PL_op)
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72 PerlIO_printf(PerlIO_stderr(), "thread starts at Nullop\n"));
73 /*
74 * When this thread is next scheduled, we start in the right
75 * place. When the thread runs off the end of the sub, perl.c
76 * handles things, using savemark to figure out how much of the
77 * stack is the return value for any join.
78 */
79 thr = savethread; /* back to the old thread */
80 return 0;
81#else
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82 Thread thr = (Thread) arg;
83 LOGOP myop;
4e35701f 84 djSP;
d9bb3666 85 I32 oldmark = TOPMARK;
533c011a 86 I32 oldscope = PL_scopestack_ix;
d9bb3666 87 I32 retval;
458fb581 88 SV *sv;
0ae6046c 89 AV *av;
14fcddff 90 int i, ret;
783070da 91 dJMPENV;
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92
93#if defined(MULTIPLICITY)
94 PERL_SET_INTERP(thr->interp);
95#endif
96
8b73bbec 97 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p waiting to start\n",
0b9678a8 98 thr));
783070da 99
0b9678a8 100 /* Don't call *anything* requiring dTHR until after SET_THR() */
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101 /*
102 * Wait until our creator releases us. If we didn't do this, then
103 * it would be potentially possible for out thread to carry on and
104 * do stuff before our creator fills in our "self" field. For example,
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105 * if we went and created another thread which tried to JOIN with us,
106 * then we'd be in a mess.
d9bb3666 107 */
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108 MUTEX_LOCK(&thr->mutex);
109 MUTEX_UNLOCK(&thr->mutex);
d9bb3666 110
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111 /*
112 * It's safe to wait until now to set the thread-specific pointer
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113 * from our pthread_t structure to our struct perl_thread, since
114 * we're the only thread who can get at it anyway.
d9bb3666 115 */
ea0efc06 116 SET_THR(thr);
d9bb3666 117
783070da 118 /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */
8b73bbec 119 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n",
683929b4 120 thr, SvPEEK(TOPs)));
783070da 121
0ae6046c 122 av = newAV();
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123 sv = POPs;
124 PUTBACK;
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125 ENTER;
126 SAVETMPS;
458fb581 127 perl_call_sv(sv, G_ARRAY|G_EVAL);
734689b1 128 SPAGAIN;
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NIS
129 retval = SP - (PL_stack_base + oldmark);
130 SP = PL_stack_base + oldmark + 1;
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131 if (SvCUR(thr->errsv)) {
132 MUTEX_LOCK(&thr->mutex);
133 thr->flags |= THRf_DID_DIE;
134 MUTEX_UNLOCK(&thr->mutex);
6b88bc9c 135 av_store(av, 0, &PL_sv_no);
458fb581 136 av_store(av, 1, newSVsv(thr->errsv));
8b73bbec 137 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p died: %s\n",
6b88bc9c 138 thr, SvPV(thr->errsv, PL_na)));
458fb581 139 } else {
8b73bbec 140 DEBUG_S(STMT_START {
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141 for (i = 1; i <= retval; i++) {
142 PerlIO_printf(PerlIO_stderr(), "%p return[%d] = %s\n",
924508f0 143 thr, i, SvPEEK(SP[i - 1]));
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144 }
145 } STMT_END);
6b88bc9c 146 av_store(av, 0, &PL_sv_yes);
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147 for (i = 1; i <= retval; i++, SP++)
148 sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP));
458fb581 149 }
572eda1c 150 FREETMPS;
901b18f1 151 LEAVE;
458fb581 152
d9bb3666 153 finishoff:
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154#if 0
155 /* removed for debug */
6b88bc9c 156 SvREFCNT_dec(PL_curstack);
783070da 157#endif
199100c8 158 SvREFCNT_dec(thr->cvcache);
54b9620d 159 SvREFCNT_dec(thr->threadsv);
554b3eca 160 SvREFCNT_dec(thr->specific);
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161 SvREFCNT_dec(thr->errsv);
162 SvREFCNT_dec(thr->errhv);
5c0ca799 163
f7ac0805 164 /*Safefree(cxstack);*/
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165 while (PL_curstackinfo->si_next)
166 PL_curstackinfo = PL_curstackinfo->si_next;
167 while (PL_curstackinfo) {
168 PERL_SI *p = PL_curstackinfo->si_prev;
169 SvREFCNT_dec(PL_curstackinfo->si_stack);
170 Safefree(PL_curstackinfo->si_cxstack);
171 Safefree(PL_curstackinfo);
172 PL_curstackinfo = p;
f7ac0805 173 }
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174 Safefree(PL_markstack);
175 Safefree(PL_scopestack);
176 Safefree(PL_savestack);
177 Safefree(PL_retstack);
178 Safefree(PL_tmps_stack);
179 Safefree(PL_ofs);
d9bb3666 180
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181 SvREFCNT_dec(PL_rs);
182 SvREFCNT_dec(PL_nrs);
183 SvREFCNT_dec(PL_statname);
184 Safefree(PL_screamfirst);
185 Safefree(PL_screamnext);
186 Safefree(PL_reg_start_tmp);
187 SvREFCNT_dec(PL_lastscream);
901b18f1 188 SvREFCNT_dec(PL_defoutgv);
82ba1be6 189 Safefree(PL_reg_poscache);
5c0ca799 190
14fcddff 191 MUTEX_LOCK(&thr->mutex);
8b73bbec 192 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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193 "%p: threadstart finishing: state is %u\n",
194 thr, ThrSTATE(thr)));
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195 switch (ThrSTATE(thr)) {
196 case THRf_R_JOINABLE:
197 ThrSETSTATE(thr, THRf_ZOMBIE);
198 MUTEX_UNLOCK(&thr->mutex);
8b73bbec 199 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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200 "%p: R_JOINABLE thread finished\n", thr));
201 break;
202 case THRf_R_JOINED:
203 ThrSETSTATE(thr, THRf_DEAD);
204 MUTEX_UNLOCK(&thr->mutex);
cea2e8a9 205 remove_thread(aTHX_ thr);
8b73bbec 206 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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207 "%p: R_JOINED thread finished\n", thr));
208 break;
50112d62 209 case THRf_R_DETACHED:
683929b4 210 ThrSETSTATE(thr, THRf_DEAD);
14fcddff 211 MUTEX_UNLOCK(&thr->mutex);
458fb581 212 SvREFCNT_dec(av);
8b73bbec 213 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
14fcddff 214 "%p: DETACHED thread finished\n", thr));
cea2e8a9 215 remove_thread(aTHX_ thr); /* This might trigger main thread to finish */
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216 break;
217 default:
218 MUTEX_UNLOCK(&thr->mutex);
219 croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr));
220 /* NOTREACHED */
734689b1 221 }
458fb581 222 return THREAD_RET_CAST(av); /* Available for anyone to join with */
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223 /* us unless we're detached, in which */
224 /* case noone sees the value anyway. */
783070da 225#endif
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226#else
227 return THREAD_RET_CAST(NULL);
228#endif
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229}
230
683929b4 231static SV *
cea2e8a9 232newthread (pTHX_ SV *startsv, AV *initargs, char *classname)
d9bb3666 233{
f0f333f4 234#ifdef USE_THREADS
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235 dSP;
236 Thread savethread;
237 int i;
683929b4 238 SV *sv;
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239 int err;
240#ifndef THREAD_CREATE
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241 static pthread_attr_t attr;
242 static int attr_inited = 0;
f152979c 243 sigset_t fullmask, oldmask;
13666627 244 static int attr_joinable = PTHREAD_CREATE_JOINABLE;
b86a2fa7 245#endif
1cfa4ec7 246
d9bb3666 247 savethread = thr;
a863c7d1 248 thr = new_struct_thread(thr);
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249 /* temporarily pretend to be the child thread in case the
250 * XPUSHs() below want to grow the child's stack. This is
251 * safe, since the other thread is not yet created, and we
252 * are the only ones who know about it */
253 SET_THR(thr);
d9bb3666 254 SPAGAIN;
8b73bbec 255 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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NIS
256 "%p: newthread (%p), tid is %u, preparing stack\n",
257 savethread, thr, thr->tid));
d9bb3666 258 /* The following pushes the arg list and startsv onto the *new* stack */
924508f0 259 PUSHMARK(SP);
d9bb3666 260 /* Could easily speed up the following greatly */
734689b1 261 for (i = 0; i <= AvFILL(initargs); i++)
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262 XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE)));
263 XPUSHs(SvREFCNT_inc(startsv));
264 PUTBACK;
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265
266 /* On your marks... */
c4e7bd8d 267 SET_THR(savethread);
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268 MUTEX_LOCK(&thr->mutex);
269
ea0efc06 270#ifdef THREAD_CREATE
f0f333f4 271 err = THREAD_CREATE(thr, threadstart);
783070da 272#else
ea0efc06 273 /* Get set... */
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274 sigfillset(&fullmask);
275 if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1)
276 croak("panic: sigprocmask");
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277 err = 0;
278 if (!attr_inited) {
279 attr_inited = 1;
52e1cb5e 280 err = pthread_attr_init(&attr);
0d85d877 281# ifdef PTHREAD_ATTR_SETDETACHSTATE
940cb80d 282 if (err == 0)
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JH
283 err = PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable);
284
285# else
1cfa4ec7 286 croak("panic: can't pthread_attr_setdetachstate");
0d85d877 287# endif
52e1cb5e 288 }
940cb80d 289 if (err == 0)
0d85d877 290 err = PTHREAD_CREATE(&thr->self, attr, threadstart, (void*) thr);
ea0efc06 291#endif
b099ddc0 292
ea0efc06 293 if (err) {
b099ddc0 294 MUTEX_UNLOCK(&thr->mutex);
8b73bbec 295 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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296 "%p: create of %p failed %d\n",
297 savethread, thr, err));
ea0efc06 298 /* Thread creation failed--clean up */
199100c8 299 SvREFCNT_dec(thr->cvcache);
cea2e8a9 300 remove_thread(aTHX_ thr);
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301 MUTEX_DESTROY(&thr->mutex);
302 for (i = 0; i <= AvFILL(initargs); i++)
303 SvREFCNT_dec(*av_fetch(initargs, i, FALSE));
304 SvREFCNT_dec(startsv);
305 return NULL;
306 }
b099ddc0 307
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308#ifdef THREAD_POST_CREATE
309 THREAD_POST_CREATE(thr);
310#else
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311 if (sigprocmask(SIG_SETMASK, &oldmask, 0))
312 croak("panic: sigprocmask");
783070da 313#endif
b099ddc0 314
7d901afa 315 sv = newSViv(thr->tid);
199100c8 316 sv_magic(sv, thr->oursv, '~', 0, 0);
7d901afa 317 SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE;
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GS
318 sv = sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE));
319
320 /* Go */
321 MUTEX_UNLOCK(&thr->mutex);
322
323 return sv;
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NIS
324#else
325 croak("No threads in this perl");
6b88bc9c 326 return &PL_sv_undef;
f0f333f4 327#endif
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328}
329
20ce7b12 330static Signal_t handle_thread_signal (int sig);
f0f333f4 331
f152979c 332static Signal_t
f0f333f4 333handle_thread_signal(int sig)
f152979c 334{
c5be433b 335 dTHXo;
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336 unsigned char c = (unsigned char) sig;
337 /*
338 * We're not really allowed to call fprintf in a signal handler
339 * so don't be surprised if this isn't robust while debugging
340 * with -DL.
341 */
8b73bbec 342 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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343 "handle_thread_signal: got signal %d\n", sig););
344 write(sig_pipe[1], &c, 1);
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345}
346
d9bb3666 347MODULE = Thread PACKAGE = Thread
0b9678a8 348PROTOTYPES: DISABLE
d9bb3666 349
683929b4 350void
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351new(classname, startsv, ...)
352 char * classname
d9bb3666 353 SV * startsv
734689b1 354 AV * av = av_make(items - 2, &ST(2));
683929b4 355 PPCODE:
cea2e8a9 356 XPUSHs(sv_2mortal(newthread(aTHX_ startsv, av, classname)));
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357
358void
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359join(t)
360 Thread t
361 AV * av = NO_INIT
362 int i = NO_INIT
363 PPCODE:
f0f333f4 364#ifdef USE_THREADS
272b4648
GS
365 if (t == thr)
366 croak("Attempt to join self");
8b73bbec 367 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n",
7d901afa 368 thr, t, ThrSTATE(t)););
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369 MUTEX_LOCK(&t->mutex);
370 switch (ThrSTATE(t)) {
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371 case THRf_R_JOINABLE:
372 case THRf_R_JOINED:
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373 ThrSETSTATE(t, THRf_R_JOINED);
374 MUTEX_UNLOCK(&t->mutex);
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375 break;
376 case THRf_ZOMBIE:
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377 ThrSETSTATE(t, THRf_DEAD);
378 MUTEX_UNLOCK(&t->mutex);
cea2e8a9 379 remove_thread(aTHX_ t);
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380 break;
381 default:
50112d62 382 MUTEX_UNLOCK(&t->mutex);
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383 croak("can't join with thread");
384 /* NOTREACHED */
385 }
ea0efc06 386 JOIN(t, &av);
7d901afa 387
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388 if (SvTRUE(*av_fetch(av, 0, FALSE))) {
389 /* Could easily speed up the following if necessary */
390 for (i = 1; i <= AvFILL(av); i++)
391 XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE)));
392 } else {
2d8e6c8d
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393 STRLEN n_a;
394 char *mess = SvPV(*av_fetch(av, 1, FALSE), n_a);
8b73bbec 395 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
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396 "%p: join propagating die message: %s\n",
397 thr, mess));
398 croak(mess);
399 }
f0f333f4 400#endif
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401
402void
734689b1 403detach(t)
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404 Thread t
405 CODE:
f0f333f4 406#ifdef USE_THREADS
8b73bbec 407 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n",
7d901afa 408 thr, t, ThrSTATE(t)););
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409 MUTEX_LOCK(&t->mutex);
410 switch (ThrSTATE(t)) {
14fcddff 411 case THRf_R_JOINABLE:
50112d62 412 ThrSETSTATE(t, THRf_R_DETACHED);
14fcddff 413 /* fall through */
50112d62 414 case THRf_R_DETACHED:
14fcddff 415 DETACH(t);
50112d62 416 MUTEX_UNLOCK(&t->mutex);
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417 break;
418 case THRf_ZOMBIE:
50112d62 419 ThrSETSTATE(t, THRf_DEAD);
7d901afa 420 DETACH(t);
50112d62 421 MUTEX_UNLOCK(&t->mutex);
cea2e8a9 422 remove_thread(aTHX_ t);
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423 break;
424 default:
50112d62 425 MUTEX_UNLOCK(&t->mutex);
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426 croak("can't detach thread");
427 /* NOTREACHED */
734689b1 428 }
f0f333f4 429#endif
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430
431void
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432equal(t1, t2)
433 Thread t1
434 Thread t2
435 PPCODE:
6b88bc9c 436 PUSHs((t1 == t2) ? &PL_sv_yes : &PL_sv_no);
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437
438void
439flags(t)
440 Thread t
441 PPCODE:
f0f333f4 442#ifdef USE_THREADS
7d901afa 443 PUSHs(sv_2mortal(newSViv(t->flags)));
f0f333f4 444#endif
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445
446void
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447self(classname)
448 char * classname
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449 PREINIT:
450 SV *sv;
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NIS
451 PPCODE:
452#ifdef USE_THREADS
7d901afa 453 sv = newSViv(thr->tid);
199100c8 454 sv_magic(sv, thr->oursv, '~', 0, 0);
7d901afa 455 SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE;
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456 PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv),
457 gv_stashpv(classname, TRUE))));
f0f333f4 458#endif
7d901afa 459
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460U32
461tid(t)
462 Thread t
463 CODE:
f0f333f4 464#ifdef USE_THREADS
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465 MUTEX_LOCK(&t->mutex);
466 RETVAL = t->tid;
467 MUTEX_UNLOCK(&t->mutex);
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NIS
468#else
469 RETVAL = 0;
470#endif
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471 OUTPUT:
472 RETVAL
473
474void
475DESTROY(t)
476 SV * t
477 PPCODE:
6b88bc9c 478 PUSHs(&PL_sv_yes);
50112d62 479
7d901afa 480void
734689b1 481yield()
d9bb3666 482 CODE:
f0f333f4
NIS
483{
484#ifdef USE_THREADS
ea0efc06 485 YIELD;
f0f333f4
NIS
486#endif
487}
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488
489void
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490cond_wait(sv)
491 SV * sv
492 MAGIC * mg = NO_INIT
f0f333f4
NIS
493CODE:
494#ifdef USE_THREADS
2c127b02 495 if (SvROK(sv))
734689b1 496 sv = SvRV(sv);
2c127b02 497
734689b1 498 mg = condpair_magic(sv);
8b73bbec 499 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv));
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500 MUTEX_LOCK(MgMUTEXP(mg));
501 if (MgOWNER(mg) != thr) {
502 MUTEX_UNLOCK(MgMUTEXP(mg));
503 croak("cond_wait for lock that we don't own\n");
504 }
505 MgOWNER(mg) = 0;
d3ef5668 506 COND_SIGNAL(MgOWNERCONDP(mg));
734689b1 507 COND_WAIT(MgCONDP(mg), MgMUTEXP(mg));
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508 while (MgOWNER(mg))
509 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
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510 MgOWNER(mg) = thr;
511 MUTEX_UNLOCK(MgMUTEXP(mg));
f0f333f4
NIS
512#endif
513
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514void
515cond_signal(sv)
516 SV * sv
517 MAGIC * mg = NO_INIT
518CODE:
f0f333f4 519#ifdef USE_THREADS
50112d62 520 if (SvROK(sv))
734689b1 521 sv = SvRV(sv);
50112d62 522
734689b1 523 mg = condpair_magic(sv);
8b73bbec 524 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv));
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525 MUTEX_LOCK(MgMUTEXP(mg));
526 if (MgOWNER(mg) != thr) {
527 MUTEX_UNLOCK(MgMUTEXP(mg));
528 croak("cond_signal for lock that we don't own\n");
529 }
530 COND_SIGNAL(MgCONDP(mg));
531 MUTEX_UNLOCK(MgMUTEXP(mg));
f0f333f4 532#endif
d9bb3666 533
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534void
535cond_broadcast(sv)
536 SV * sv
537 MAGIC * mg = NO_INIT
f0f333f4
NIS
538CODE:
539#ifdef USE_THREADS
783070da 540 if (SvROK(sv))
734689b1 541 sv = SvRV(sv);
783070da 542
734689b1 543 mg = condpair_magic(sv);
8b73bbec 544 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n",
683929b4 545 thr, sv));
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546 MUTEX_LOCK(MgMUTEXP(mg));
547 if (MgOWNER(mg) != thr) {
548 MUTEX_UNLOCK(MgMUTEXP(mg));
549 croak("cond_broadcast for lock that we don't own\n");
550 }
551 COND_BROADCAST(MgCONDP(mg));
552 MUTEX_UNLOCK(MgMUTEXP(mg));
f0f333f4 553#endif
f152979c 554
7d901afa 555void
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556list(classname)
557 char * classname
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558 PREINIT:
559 Thread t;
560 AV * av;
561 SV ** svp;
562 int n = 0;
563 PPCODE:
f0f333f4 564#ifdef USE_THREADS
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565 av = newAV();
566 /*
567 * Iterate until we have enough dynamic storage for all threads.
568 * We mustn't do any allocation while holding threads_mutex though.
569 */
533c011a 570 MUTEX_LOCK(&PL_threads_mutex);
7d901afa 571 do {
533c011a
NIS
572 n = PL_nthreads;
573 MUTEX_UNLOCK(&PL_threads_mutex);
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574 if (AvFILL(av) < n - 1) {
575 int i = AvFILL(av);
576 for (i = AvFILL(av); i < n - 1; i++) {
577 SV *sv = newSViv(0); /* fill in tid later */
578 sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */
579 av_push(av, sv_bless(newRV_noinc(sv),
458fb581 580 gv_stashpv(classname, TRUE)));
50112d62 581
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582 }
583 }
533c011a
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584 MUTEX_LOCK(&PL_threads_mutex);
585 } while (n < PL_nthreads);
586 n = PL_nthreads; /* Get the final correct value */
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587
588 /*
589 * At this point, there's enough room to fill in av.
590 * Note that we are holding threads_mutex so the list
591 * won't change out from under us but all the remaining
592 * processing is "fast" (no blocking, malloc etc.)
593 */
594 t = thr;
595 svp = AvARRAY(av);
596 do {
0a00ffdb 597 SV *sv = (SV*)SvRV(*svp);
7d901afa 598 sv_setiv(sv, t->tid);
199100c8 599 SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv);
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600 SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED;
601 SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE;
602 t = t->next;
0a00ffdb 603 svp++;
7d901afa 604 } while (t != thr);
50112d62 605 /* */
533c011a 606 MUTEX_UNLOCK(&PL_threads_mutex);
7d901afa 607 /* Truncate any unneeded slots in av */
50112d62 608 av_fill(av, n - 1);
7d901afa 609 /* Finally, push all the new objects onto the stack and drop av */
924508f0 610 EXTEND(SP, n);
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611 for (svp = AvARRAY(av); n > 0; n--, svp++)
612 PUSHs(*svp);
613 (void)sv_2mortal((SV*)av);
f0f333f4 614#endif
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615
616
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617MODULE = Thread PACKAGE = Thread::Signal
618
619void
620kill_sighandler_thread()
621 PPCODE:
3aeed370 622 write(sig_pipe[1], "\0", 1);
6b88bc9c 623 PUSHs(&PL_sv_yes);
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624
625void
626init_thread_signals()
627 PPCODE:
533c011a 628 PL_sighandlerp = handle_thread_signal;
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629 if (pipe(sig_pipe) == -1)
630 XSRETURN_UNDEF;
6b88bc9c 631 PUSHs(&PL_sv_yes);
f152979c 632
3aeed370 633void
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634await_signal()
635 PREINIT:
3aeed370 636 unsigned char c;
ea0efc06 637 SSize_t ret;
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638 CODE:
639 do {
3aeed370 640 ret = read(sig_pipe[0], &c, 1);
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641 } while (ret == -1 && errno == EINTR);
642 if (ret == -1)
643 croak("panic: await_signal");
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644 ST(0) = sv_newmortal();
645 if (ret)
22c35a8c 646 sv_setsv(ST(0), c ? PL_psig_ptr[c] : &PL_sv_no);
8b73bbec 647 DEBUG_S(PerlIO_printf(PerlIO_stderr(),
3aeed370 648 "await_signal returning %s\n", SvPEEK(ST(0))););
4e35701f 649
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650MODULE = Thread PACKAGE = Thread::Specific
651
652void
653data(classname = "Thread::Specific")
654 char * classname
655 PPCODE:
fb223100 656#ifdef USE_THREADS
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657 if (AvFILL(thr->specific) == -1) {
658 GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV);
659 av_store(thr->specific, 0, newRV((SV*)GvHV(gv)));
660 }
661 XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE)));
fb223100 662#endif