Commit | Line | Data |
c5be433b |
1 | #define PERL_NO_GET_CONTEXT |
d9bb3666 |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
5 | |
7d901afa |
6 | /* Magic signature for Thread's mg_private is "Th" */ |
7 | #define Thread_MAGIC_SIGNATURE 0x5468 |
8 | |
f0f333f4 |
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 |
17 | |
18 | #ifndef THREAD_RET_TYPE |
f0f333f4 |
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 |
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--; |
7d901afa |
32 | t->prev->next = t->next; |
33 | t->next->prev = t->prev; |
533c011a |
34 | COND_BROADCAST(&PL_nthreads_cond); |
35 | MUTEX_UNLOCK(&PL_threads_mutex); |
f0f333f4 |
36 | #endif |
7d901afa |
37 | } |
38 | |
ea0efc06 |
39 | static THREAD_RET_TYPE |
f0f333f4 |
40 | threadstart(void *arg) |
d9bb3666 |
41 | { |
f0f333f4 |
42 | #ifdef USE_THREADS |
783070da |
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; |
783070da |
50 | int i; |
51 | |
8b73bbec |
52 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
683929b4 |
53 | thr, SvPEEK(TOPs))); |
783070da |
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 */ |
6b88bc9c |
64 | PL_op = (OP*)&myop; |
65 | Zero(PL_op, 1, LOGOP); |
783070da |
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) |
783070da |
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 |
d9bb3666 |
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; |
89 | AV *av = newAV(); |
14fcddff |
90 | int i, ret; |
783070da |
91 | dJMPENV; |
8b73bbec |
92 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p waiting to start\n", |
0b9678a8 |
93 | thr)); |
783070da |
94 | |
0b9678a8 |
95 | /* Don't call *anything* requiring dTHR until after SET_THR() */ |
d9bb3666 |
96 | /* |
97 | * Wait until our creator releases us. If we didn't do this, then |
98 | * it would be potentially possible for out thread to carry on and |
99 | * do stuff before our creator fills in our "self" field. For example, |
ea0efc06 |
100 | * if we went and created another thread which tried to JOIN with us, |
101 | * then we'd be in a mess. |
d9bb3666 |
102 | */ |
50112d62 |
103 | MUTEX_LOCK(&thr->mutex); |
104 | MUTEX_UNLOCK(&thr->mutex); |
d9bb3666 |
105 | |
d9bb3666 |
106 | /* |
107 | * It's safe to wait until now to set the thread-specific pointer |
52e1cb5e |
108 | * from our pthread_t structure to our struct perl_thread, since |
109 | * we're the only thread who can get at it anyway. |
d9bb3666 |
110 | */ |
ea0efc06 |
111 | SET_THR(thr); |
d9bb3666 |
112 | |
783070da |
113 | /* Only now can we use SvPEEK (which calls sv_newmortal which does dTHR) */ |
8b73bbec |
114 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "new thread %p starting at %s\n", |
683929b4 |
115 | thr, SvPEEK(TOPs))); |
783070da |
116 | |
458fb581 |
117 | sv = POPs; |
118 | PUTBACK; |
901b18f1 |
119 | ENTER; |
120 | SAVETMPS; |
458fb581 |
121 | perl_call_sv(sv, G_ARRAY|G_EVAL); |
734689b1 |
122 | SPAGAIN; |
533c011a |
123 | retval = SP - (PL_stack_base + oldmark); |
124 | SP = PL_stack_base + oldmark + 1; |
458fb581 |
125 | if (SvCUR(thr->errsv)) { |
126 | MUTEX_LOCK(&thr->mutex); |
127 | thr->flags |= THRf_DID_DIE; |
128 | MUTEX_UNLOCK(&thr->mutex); |
6b88bc9c |
129 | av_store(av, 0, &PL_sv_no); |
458fb581 |
130 | av_store(av, 1, newSVsv(thr->errsv)); |
8b73bbec |
131 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p died: %s\n", |
6b88bc9c |
132 | thr, SvPV(thr->errsv, PL_na))); |
458fb581 |
133 | } else { |
8b73bbec |
134 | DEBUG_S(STMT_START { |
458fb581 |
135 | for (i = 1; i <= retval; i++) { |
136 | PerlIO_printf(PerlIO_stderr(), "%p return[%d] = %s\n", |
924508f0 |
137 | thr, i, SvPEEK(SP[i - 1])); |
458fb581 |
138 | } |
139 | } STMT_END); |
6b88bc9c |
140 | av_store(av, 0, &PL_sv_yes); |
924508f0 |
141 | for (i = 1; i <= retval; i++, SP++) |
142 | sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); |
458fb581 |
143 | } |
572eda1c |
144 | FREETMPS; |
901b18f1 |
145 | LEAVE; |
458fb581 |
146 | |
d9bb3666 |
147 | finishoff: |
783070da |
148 | #if 0 |
149 | /* removed for debug */ |
6b88bc9c |
150 | SvREFCNT_dec(PL_curstack); |
783070da |
151 | #endif |
199100c8 |
152 | SvREFCNT_dec(thr->cvcache); |
54b9620d |
153 | SvREFCNT_dec(thr->threadsv); |
554b3eca |
154 | SvREFCNT_dec(thr->specific); |
38a03e6e |
155 | SvREFCNT_dec(thr->errsv); |
156 | SvREFCNT_dec(thr->errhv); |
5c0ca799 |
157 | |
f7ac0805 |
158 | /*Safefree(cxstack);*/ |
84fee439 |
159 | while (PL_curstackinfo->si_next) |
160 | PL_curstackinfo = PL_curstackinfo->si_next; |
161 | while (PL_curstackinfo) { |
162 | PERL_SI *p = PL_curstackinfo->si_prev; |
163 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
164 | Safefree(PL_curstackinfo->si_cxstack); |
165 | Safefree(PL_curstackinfo); |
166 | PL_curstackinfo = p; |
f7ac0805 |
167 | } |
84fee439 |
168 | Safefree(PL_markstack); |
169 | Safefree(PL_scopestack); |
170 | Safefree(PL_savestack); |
171 | Safefree(PL_retstack); |
172 | Safefree(PL_tmps_stack); |
173 | Safefree(PL_ofs); |
d9bb3666 |
174 | |
84fee439 |
175 | SvREFCNT_dec(PL_rs); |
176 | SvREFCNT_dec(PL_nrs); |
177 | SvREFCNT_dec(PL_statname); |
178 | Safefree(PL_screamfirst); |
179 | Safefree(PL_screamnext); |
180 | Safefree(PL_reg_start_tmp); |
181 | SvREFCNT_dec(PL_lastscream); |
901b18f1 |
182 | SvREFCNT_dec(PL_defoutgv); |
2c2d71f5 |
183 | Safefree(PL_reg_poscache); |
5c0ca799 |
184 | |
14fcddff |
185 | MUTEX_LOCK(&thr->mutex); |
8b73bbec |
186 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
50112d62 |
187 | "%p: threadstart finishing: state is %u\n", |
188 | thr, ThrSTATE(thr))); |
14fcddff |
189 | switch (ThrSTATE(thr)) { |
190 | case THRf_R_JOINABLE: |
191 | ThrSETSTATE(thr, THRf_ZOMBIE); |
192 | MUTEX_UNLOCK(&thr->mutex); |
8b73bbec |
193 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
194 | "%p: R_JOINABLE thread finished\n", thr)); |
195 | break; |
196 | case THRf_R_JOINED: |
197 | ThrSETSTATE(thr, THRf_DEAD); |
198 | MUTEX_UNLOCK(&thr->mutex); |
cea2e8a9 |
199 | remove_thread(aTHX_ thr); |
8b73bbec |
200 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
201 | "%p: R_JOINED thread finished\n", thr)); |
202 | break; |
50112d62 |
203 | case THRf_R_DETACHED: |
683929b4 |
204 | ThrSETSTATE(thr, THRf_DEAD); |
14fcddff |
205 | MUTEX_UNLOCK(&thr->mutex); |
458fb581 |
206 | SvREFCNT_dec(av); |
8b73bbec |
207 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
14fcddff |
208 | "%p: DETACHED thread finished\n", thr)); |
cea2e8a9 |
209 | remove_thread(aTHX_ thr); /* This might trigger main thread to finish */ |
14fcddff |
210 | break; |
211 | default: |
212 | MUTEX_UNLOCK(&thr->mutex); |
213 | croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); |
214 | /* NOTREACHED */ |
734689b1 |
215 | } |
458fb581 |
216 | return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
ea0efc06 |
217 | /* us unless we're detached, in which */ |
218 | /* case noone sees the value anyway. */ |
783070da |
219 | #endif |
f0f333f4 |
220 | #else |
221 | return THREAD_RET_CAST(NULL); |
222 | #endif |
d9bb3666 |
223 | } |
224 | |
683929b4 |
225 | static SV * |
cea2e8a9 |
226 | newthread (pTHX_ SV *startsv, AV *initargs, char *classname) |
d9bb3666 |
227 | { |
f0f333f4 |
228 | #ifdef USE_THREADS |
d9bb3666 |
229 | dSP; |
230 | Thread savethread; |
231 | int i; |
683929b4 |
232 | SV *sv; |
ea0efc06 |
233 | int err; |
234 | #ifndef THREAD_CREATE |
940cb80d |
235 | static pthread_attr_t attr; |
236 | static int attr_inited = 0; |
f152979c |
237 | sigset_t fullmask, oldmask; |
13666627 |
238 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
b86a2fa7 |
239 | #endif |
1cfa4ec7 |
240 | |
d9bb3666 |
241 | savethread = thr; |
a863c7d1 |
242 | thr = new_struct_thread(thr); |
c4e7bd8d |
243 | /* temporarily pretend to be the child thread in case the |
244 | * XPUSHs() below want to grow the child's stack. This is |
245 | * safe, since the other thread is not yet created, and we |
246 | * are the only ones who know about it */ |
247 | SET_THR(thr); |
d9bb3666 |
248 | SPAGAIN; |
8b73bbec |
249 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
0b9678a8 |
250 | "%p: newthread (%p), tid is %u, preparing stack\n", |
251 | savethread, thr, thr->tid)); |
d9bb3666 |
252 | /* The following pushes the arg list and startsv onto the *new* stack */ |
924508f0 |
253 | PUSHMARK(SP); |
d9bb3666 |
254 | /* Could easily speed up the following greatly */ |
734689b1 |
255 | for (i = 0; i <= AvFILL(initargs); i++) |
d9bb3666 |
256 | XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); |
257 | XPUSHs(SvREFCNT_inc(startsv)); |
258 | PUTBACK; |
b099ddc0 |
259 | |
260 | /* On your marks... */ |
c4e7bd8d |
261 | SET_THR(savethread); |
b099ddc0 |
262 | MUTEX_LOCK(&thr->mutex); |
263 | |
ea0efc06 |
264 | #ifdef THREAD_CREATE |
f0f333f4 |
265 | err = THREAD_CREATE(thr, threadstart); |
783070da |
266 | #else |
ea0efc06 |
267 | /* Get set... */ |
f152979c |
268 | sigfillset(&fullmask); |
269 | if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) |
270 | croak("panic: sigprocmask"); |
940cb80d |
271 | err = 0; |
272 | if (!attr_inited) { |
273 | attr_inited = 1; |
52e1cb5e |
274 | err = pthread_attr_init(&attr); |
0d85d877 |
275 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
940cb80d |
276 | if (err == 0) |
0d85d877 |
277 | err = PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
278 | |
279 | # else |
1cfa4ec7 |
280 | croak("panic: can't pthread_attr_setdetachstate"); |
0d85d877 |
281 | # endif |
52e1cb5e |
282 | } |
940cb80d |
283 | if (err == 0) |
0d85d877 |
284 | err = PTHREAD_CREATE(&thr->self, attr, threadstart, (void*) thr); |
ea0efc06 |
285 | #endif |
b099ddc0 |
286 | |
ea0efc06 |
287 | if (err) { |
b099ddc0 |
288 | MUTEX_UNLOCK(&thr->mutex); |
8b73bbec |
289 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
940cb80d |
290 | "%p: create of %p failed %d\n", |
291 | savethread, thr, err)); |
ea0efc06 |
292 | /* Thread creation failed--clean up */ |
199100c8 |
293 | SvREFCNT_dec(thr->cvcache); |
cea2e8a9 |
294 | remove_thread(aTHX_ thr); |
ea0efc06 |
295 | MUTEX_DESTROY(&thr->mutex); |
296 | for (i = 0; i <= AvFILL(initargs); i++) |
297 | SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); |
298 | SvREFCNT_dec(startsv); |
299 | return NULL; |
300 | } |
b099ddc0 |
301 | |
ea0efc06 |
302 | #ifdef THREAD_POST_CREATE |
303 | THREAD_POST_CREATE(thr); |
304 | #else |
f152979c |
305 | if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
306 | croak("panic: sigprocmask"); |
783070da |
307 | #endif |
b099ddc0 |
308 | |
7d901afa |
309 | sv = newSViv(thr->tid); |
199100c8 |
310 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
311 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
b099ddc0 |
312 | sv = sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
313 | |
314 | /* Go */ |
315 | MUTEX_UNLOCK(&thr->mutex); |
316 | |
317 | return sv; |
f0f333f4 |
318 | #else |
319 | croak("No threads in this perl"); |
6b88bc9c |
320 | return &PL_sv_undef; |
f0f333f4 |
321 | #endif |
d9bb3666 |
322 | } |
323 | |
20ce7b12 |
324 | static Signal_t handle_thread_signal (int sig); |
f0f333f4 |
325 | |
f152979c |
326 | static Signal_t |
f0f333f4 |
327 | handle_thread_signal(int sig) |
f152979c |
328 | { |
c5be433b |
329 | dTHXo; |
3aeed370 |
330 | unsigned char c = (unsigned char) sig; |
331 | /* |
332 | * We're not really allowed to call fprintf in a signal handler |
333 | * so don't be surprised if this isn't robust while debugging |
334 | * with -DL. |
335 | */ |
8b73bbec |
336 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
3aeed370 |
337 | "handle_thread_signal: got signal %d\n", sig);); |
338 | write(sig_pipe[1], &c, 1); |
f152979c |
339 | } |
340 | |
d9bb3666 |
341 | MODULE = Thread PACKAGE = Thread |
0b9678a8 |
342 | PROTOTYPES: DISABLE |
d9bb3666 |
343 | |
683929b4 |
344 | void |
458fb581 |
345 | new(classname, startsv, ...) |
346 | char * classname |
d9bb3666 |
347 | SV * startsv |
734689b1 |
348 | AV * av = av_make(items - 2, &ST(2)); |
683929b4 |
349 | PPCODE: |
cea2e8a9 |
350 | XPUSHs(sv_2mortal(newthread(aTHX_ startsv, av, classname))); |
d9bb3666 |
351 | |
352 | void |
d9bb3666 |
353 | join(t) |
354 | Thread t |
355 | AV * av = NO_INIT |
356 | int i = NO_INIT |
357 | PPCODE: |
f0f333f4 |
358 | #ifdef USE_THREADS |
272b4648 |
359 | if (t == thr) |
360 | croak("Attempt to join self"); |
8b73bbec |
361 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: joining %p (state %u)\n", |
7d901afa |
362 | thr, t, ThrSTATE(t));); |
50112d62 |
363 | MUTEX_LOCK(&t->mutex); |
364 | switch (ThrSTATE(t)) { |
14fcddff |
365 | case THRf_R_JOINABLE: |
366 | case THRf_R_JOINED: |
50112d62 |
367 | ThrSETSTATE(t, THRf_R_JOINED); |
368 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
369 | break; |
370 | case THRf_ZOMBIE: |
50112d62 |
371 | ThrSETSTATE(t, THRf_DEAD); |
372 | MUTEX_UNLOCK(&t->mutex); |
cea2e8a9 |
373 | remove_thread(aTHX_ t); |
14fcddff |
374 | break; |
375 | default: |
50112d62 |
376 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
377 | croak("can't join with thread"); |
378 | /* NOTREACHED */ |
379 | } |
ea0efc06 |
380 | JOIN(t, &av); |
7d901afa |
381 | |
458fb581 |
382 | if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
383 | /* Could easily speed up the following if necessary */ |
384 | for (i = 1; i <= AvFILL(av); i++) |
385 | XPUSHs(sv_2mortal(*av_fetch(av, i, FALSE))); |
386 | } else { |
2d8e6c8d |
387 | STRLEN n_a; |
388 | char *mess = SvPV(*av_fetch(av, 1, FALSE), n_a); |
8b73bbec |
389 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
458fb581 |
390 | "%p: join propagating die message: %s\n", |
391 | thr, mess)); |
392 | croak(mess); |
393 | } |
f0f333f4 |
394 | #endif |
d9bb3666 |
395 | |
396 | void |
734689b1 |
397 | detach(t) |
d9bb3666 |
398 | Thread t |
399 | CODE: |
f0f333f4 |
400 | #ifdef USE_THREADS |
8b73bbec |
401 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: detaching %p (state %u)\n", |
7d901afa |
402 | thr, t, ThrSTATE(t));); |
50112d62 |
403 | MUTEX_LOCK(&t->mutex); |
404 | switch (ThrSTATE(t)) { |
14fcddff |
405 | case THRf_R_JOINABLE: |
50112d62 |
406 | ThrSETSTATE(t, THRf_R_DETACHED); |
14fcddff |
407 | /* fall through */ |
50112d62 |
408 | case THRf_R_DETACHED: |
14fcddff |
409 | DETACH(t); |
50112d62 |
410 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
411 | break; |
412 | case THRf_ZOMBIE: |
50112d62 |
413 | ThrSETSTATE(t, THRf_DEAD); |
7d901afa |
414 | DETACH(t); |
50112d62 |
415 | MUTEX_UNLOCK(&t->mutex); |
cea2e8a9 |
416 | remove_thread(aTHX_ t); |
14fcddff |
417 | break; |
418 | default: |
50112d62 |
419 | MUTEX_UNLOCK(&t->mutex); |
14fcddff |
420 | croak("can't detach thread"); |
421 | /* NOTREACHED */ |
734689b1 |
422 | } |
f0f333f4 |
423 | #endif |
d9bb3666 |
424 | |
425 | void |
7d901afa |
426 | equal(t1, t2) |
427 | Thread t1 |
428 | Thread t2 |
429 | PPCODE: |
6b88bc9c |
430 | PUSHs((t1 == t2) ? &PL_sv_yes : &PL_sv_no); |
7d901afa |
431 | |
432 | void |
433 | flags(t) |
434 | Thread t |
435 | PPCODE: |
f0f333f4 |
436 | #ifdef USE_THREADS |
7d901afa |
437 | PUSHs(sv_2mortal(newSViv(t->flags))); |
f0f333f4 |
438 | #endif |
7d901afa |
439 | |
440 | void |
458fb581 |
441 | self(classname) |
442 | char * classname |
7d901afa |
443 | PREINIT: |
444 | SV *sv; |
f0f333f4 |
445 | PPCODE: |
446 | #ifdef USE_THREADS |
7d901afa |
447 | sv = newSViv(thr->tid); |
199100c8 |
448 | sv_magic(sv, thr->oursv, '~', 0, 0); |
7d901afa |
449 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
458fb581 |
450 | PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
451 | gv_stashpv(classname, TRUE)))); |
f0f333f4 |
452 | #endif |
7d901afa |
453 | |
50112d62 |
454 | U32 |
455 | tid(t) |
456 | Thread t |
457 | CODE: |
f0f333f4 |
458 | #ifdef USE_THREADS |
50112d62 |
459 | MUTEX_LOCK(&t->mutex); |
460 | RETVAL = t->tid; |
461 | MUTEX_UNLOCK(&t->mutex); |
f0f333f4 |
462 | #else |
463 | RETVAL = 0; |
464 | #endif |
50112d62 |
465 | OUTPUT: |
466 | RETVAL |
467 | |
468 | void |
469 | DESTROY(t) |
470 | SV * t |
471 | PPCODE: |
6b88bc9c |
472 | PUSHs(&PL_sv_yes); |
50112d62 |
473 | |
7d901afa |
474 | void |
734689b1 |
475 | yield() |
d9bb3666 |
476 | CODE: |
f0f333f4 |
477 | { |
478 | #ifdef USE_THREADS |
ea0efc06 |
479 | YIELD; |
f0f333f4 |
480 | #endif |
481 | } |
d9bb3666 |
482 | |
483 | void |
734689b1 |
484 | cond_wait(sv) |
485 | SV * sv |
486 | MAGIC * mg = NO_INIT |
f0f333f4 |
487 | CODE: |
488 | #ifdef USE_THREADS |
2c127b02 |
489 | if (SvROK(sv)) |
734689b1 |
490 | sv = SvRV(sv); |
2c127b02 |
491 | |
734689b1 |
492 | mg = condpair_magic(sv); |
8b73bbec |
493 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_wait %p\n", thr, sv)); |
734689b1 |
494 | MUTEX_LOCK(MgMUTEXP(mg)); |
495 | if (MgOWNER(mg) != thr) { |
496 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
497 | croak("cond_wait for lock that we don't own\n"); |
498 | } |
499 | MgOWNER(mg) = 0; |
d3ef5668 |
500 | COND_SIGNAL(MgOWNERCONDP(mg)); |
734689b1 |
501 | COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
50112d62 |
502 | while (MgOWNER(mg)) |
503 | COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
734689b1 |
504 | MgOWNER(mg) = thr; |
505 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
506 | #endif |
507 | |
734689b1 |
508 | void |
509 | cond_signal(sv) |
510 | SV * sv |
511 | MAGIC * mg = NO_INIT |
512 | CODE: |
f0f333f4 |
513 | #ifdef USE_THREADS |
50112d62 |
514 | if (SvROK(sv)) |
734689b1 |
515 | sv = SvRV(sv); |
50112d62 |
516 | |
734689b1 |
517 | mg = condpair_magic(sv); |
8b73bbec |
518 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_signal %p\n",thr,sv)); |
734689b1 |
519 | MUTEX_LOCK(MgMUTEXP(mg)); |
520 | if (MgOWNER(mg) != thr) { |
521 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
522 | croak("cond_signal for lock that we don't own\n"); |
523 | } |
524 | COND_SIGNAL(MgCONDP(mg)); |
525 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
526 | #endif |
d9bb3666 |
527 | |
734689b1 |
528 | void |
529 | cond_broadcast(sv) |
530 | SV * sv |
531 | MAGIC * mg = NO_INIT |
f0f333f4 |
532 | CODE: |
533 | #ifdef USE_THREADS |
783070da |
534 | if (SvROK(sv)) |
734689b1 |
535 | sv = SvRV(sv); |
783070da |
536 | |
734689b1 |
537 | mg = condpair_magic(sv); |
8b73bbec |
538 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: cond_broadcast %p\n", |
683929b4 |
539 | thr, sv)); |
734689b1 |
540 | MUTEX_LOCK(MgMUTEXP(mg)); |
541 | if (MgOWNER(mg) != thr) { |
542 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
543 | croak("cond_broadcast for lock that we don't own\n"); |
544 | } |
545 | COND_BROADCAST(MgCONDP(mg)); |
546 | MUTEX_UNLOCK(MgMUTEXP(mg)); |
f0f333f4 |
547 | #endif |
f152979c |
548 | |
7d901afa |
549 | void |
458fb581 |
550 | list(classname) |
551 | char * classname |
7d901afa |
552 | PREINIT: |
553 | Thread t; |
554 | AV * av; |
555 | SV ** svp; |
556 | int n = 0; |
557 | PPCODE: |
f0f333f4 |
558 | #ifdef USE_THREADS |
7d901afa |
559 | av = newAV(); |
560 | /* |
561 | * Iterate until we have enough dynamic storage for all threads. |
562 | * We mustn't do any allocation while holding threads_mutex though. |
563 | */ |
533c011a |
564 | MUTEX_LOCK(&PL_threads_mutex); |
7d901afa |
565 | do { |
533c011a |
566 | n = PL_nthreads; |
567 | MUTEX_UNLOCK(&PL_threads_mutex); |
7d901afa |
568 | if (AvFILL(av) < n - 1) { |
569 | int i = AvFILL(av); |
570 | for (i = AvFILL(av); i < n - 1; i++) { |
571 | SV *sv = newSViv(0); /* fill in tid later */ |
572 | sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ |
573 | av_push(av, sv_bless(newRV_noinc(sv), |
458fb581 |
574 | gv_stashpv(classname, TRUE))); |
50112d62 |
575 | |
7d901afa |
576 | } |
577 | } |
533c011a |
578 | MUTEX_LOCK(&PL_threads_mutex); |
579 | } while (n < PL_nthreads); |
580 | n = PL_nthreads; /* Get the final correct value */ |
7d901afa |
581 | |
582 | /* |
583 | * At this point, there's enough room to fill in av. |
584 | * Note that we are holding threads_mutex so the list |
585 | * won't change out from under us but all the remaining |
586 | * processing is "fast" (no blocking, malloc etc.) |
587 | */ |
588 | t = thr; |
589 | svp = AvARRAY(av); |
590 | do { |
0a00ffdb |
591 | SV *sv = (SV*)SvRV(*svp); |
7d901afa |
592 | sv_setiv(sv, t->tid); |
199100c8 |
593 | SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
7d901afa |
594 | SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
595 | SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
596 | t = t->next; |
0a00ffdb |
597 | svp++; |
7d901afa |
598 | } while (t != thr); |
50112d62 |
599 | /* */ |
533c011a |
600 | MUTEX_UNLOCK(&PL_threads_mutex); |
7d901afa |
601 | /* Truncate any unneeded slots in av */ |
50112d62 |
602 | av_fill(av, n - 1); |
7d901afa |
603 | /* Finally, push all the new objects onto the stack and drop av */ |
924508f0 |
604 | EXTEND(SP, n); |
7d901afa |
605 | for (svp = AvARRAY(av); n > 0; n--, svp++) |
606 | PUSHs(*svp); |
607 | (void)sv_2mortal((SV*)av); |
f0f333f4 |
608 | #endif |
7d901afa |
609 | |
610 | |
f152979c |
611 | MODULE = Thread PACKAGE = Thread::Signal |
612 | |
613 | void |
614 | kill_sighandler_thread() |
615 | PPCODE: |
3aeed370 |
616 | write(sig_pipe[1], "\0", 1); |
6b88bc9c |
617 | PUSHs(&PL_sv_yes); |
f152979c |
618 | |
619 | void |
620 | init_thread_signals() |
621 | PPCODE: |
533c011a |
622 | PL_sighandlerp = handle_thread_signal; |
f152979c |
623 | if (pipe(sig_pipe) == -1) |
624 | XSRETURN_UNDEF; |
6b88bc9c |
625 | PUSHs(&PL_sv_yes); |
f152979c |
626 | |
3aeed370 |
627 | void |
f152979c |
628 | await_signal() |
629 | PREINIT: |
3aeed370 |
630 | unsigned char c; |
ea0efc06 |
631 | SSize_t ret; |
f152979c |
632 | CODE: |
633 | do { |
3aeed370 |
634 | ret = read(sig_pipe[0], &c, 1); |
f152979c |
635 | } while (ret == -1 && errno == EINTR); |
636 | if (ret == -1) |
637 | croak("panic: await_signal"); |
3aeed370 |
638 | ST(0) = sv_newmortal(); |
639 | if (ret) |
22c35a8c |
640 | sv_setsv(ST(0), c ? PL_psig_ptr[c] : &PL_sv_no); |
8b73bbec |
641 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
3aeed370 |
642 | "await_signal returning %s\n", SvPEEK(ST(0)));); |
4e35701f |
643 | |
458fb581 |
644 | MODULE = Thread PACKAGE = Thread::Specific |
645 | |
646 | void |
647 | data(classname = "Thread::Specific") |
648 | char * classname |
649 | PPCODE: |
fb223100 |
650 | #ifdef USE_THREADS |
458fb581 |
651 | if (AvFILL(thr->specific) == -1) { |
652 | GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); |
653 | av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); |
654 | } |
655 | XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); |
fb223100 |
656 | #endif |