| 1 |
#define PERL_NO_GET_CONTEXT |
| 2 |
#include "EXTERN.h" |
| 3 |
#include "perl.h" |
| 4 |
#include "XSUB.h" |
| 5 |
|
| 6 |
/* Magic signature for Thread's mg_private is "Th" */ |
| 7 |
#define Thread_MAGIC_SIGNATURE 0x5468 |
| 8 |
|
| 9 |
#ifdef __cplusplus |
| 10 |
#ifdef I_UNISTD |
| 11 |
#include <unistd.h> |
| 12 |
#endif |
| 13 |
#endif |
| 14 |
#include <fcntl.h> |
| 15 |
|
| 16 |
static int sig_pipe[2]; |
| 17 |
|
| 18 |
#ifndef THREAD_RET_TYPE |
| 19 |
#define THREAD_RET_TYPE void * |
| 20 |
#define THREAD_RET_CAST(x) ((THREAD_RET_TYPE) x) |
| 21 |
#endif |
| 22 |
|
| 23 |
static void |
| 24 |
remove_thread(pTHX_ Thread t) |
| 25 |
{ |
| 26 |
#ifdef USE_5005THREADS |
| 27 |
DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log, |
| 28 |
"%p: remove_thread %p\n", thr, t))); |
| 29 |
MUTEX_LOCK(&PL_threads_mutex); |
| 30 |
MUTEX_DESTROY(&t->mutex); |
| 31 |
PL_nthreads--; |
| 32 |
t->prev->next = t->next; |
| 33 |
t->next->prev = t->prev; |
| 34 |
SvREFCNT_dec(t->oursv); |
| 35 |
COND_BROADCAST(&PL_nthreads_cond); |
| 36 |
MUTEX_UNLOCK(&PL_threads_mutex); |
| 37 |
#endif |
| 38 |
} |
| 39 |
|
| 40 |
static THREAD_RET_TYPE |
| 41 |
threadstart(void *arg) |
| 42 |
{ |
| 43 |
#ifdef USE_5005THREADS |
| 44 |
#ifdef FAKE_THREADS |
| 45 |
Thread savethread = thr; |
| 46 |
LOGOP myop; |
| 47 |
dSP; |
| 48 |
I32 oldscope = PL_scopestack_ix; |
| 49 |
I32 retval; |
| 50 |
AV *av; |
| 51 |
int i; |
| 52 |
|
| 53 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", |
| 54 |
thr, SvPEEK(TOPs))); |
| 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 */ |
| 65 |
PL_op = (OP*)&myop; |
| 66 |
Zero(PL_op, 1, LOGOP); |
| 67 |
myop.op_flags = OPf_STACKED; |
| 68 |
myop.op_next = Nullop; |
| 69 |
myop.op_flags |= OPf_KNOW; |
| 70 |
myop.op_flags |= OPf_WANT_LIST; |
| 71 |
PL_op = pp_entersub(ARGS); |
| 72 |
DEBUG_S(if (!PL_op) |
| 73 |
PerlIO_printf(Perl_debug_log, "thread starts at Nullop\n")); |
| 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 |
| 83 |
Thread thr = (Thread) arg; |
| 84 |
dSP; |
| 85 |
I32 oldmark = TOPMARK; |
| 86 |
I32 retval; |
| 87 |
SV *sv; |
| 88 |
AV *av; |
| 89 |
int i; |
| 90 |
|
| 91 |
#if defined(MULTIPLICITY) |
| 92 |
PERL_SET_INTERP(thr->interp); |
| 93 |
#endif |
| 94 |
|
| 95 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p waiting to start\n", |
| 96 |
thr)); |
| 97 |
|
| 98 |
/* |
| 99 |
* Wait until our creator releases us. If we didn't do this, then |
| 100 |
* it would be potentially possible for out thread to carry on and |
| 101 |
* do stuff before our creator fills in our "self" field. For example, |
| 102 |
* if we went and created another thread which tried to JOIN with us, |
| 103 |
* then we'd be in a mess. |
| 104 |
*/ |
| 105 |
MUTEX_LOCK(&thr->mutex); |
| 106 |
MUTEX_UNLOCK(&thr->mutex); |
| 107 |
|
| 108 |
/* |
| 109 |
* It's safe to wait until now to set the thread-specific pointer |
| 110 |
* from our pthread_t structure to our struct perl_thread, since |
| 111 |
* we're the only thread who can get at it anyway. |
| 112 |
*/ |
| 113 |
PERL_SET_THX(thr); |
| 114 |
|
| 115 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "new thread %p starting at %s\n", |
| 116 |
thr, SvPEEK(TOPs))); |
| 117 |
|
| 118 |
av = newAV(); |
| 119 |
sv = POPs; |
| 120 |
PUTBACK; |
| 121 |
ENTER; |
| 122 |
SAVETMPS; |
| 123 |
perl_call_sv(sv, G_ARRAY|G_EVAL); |
| 124 |
SPAGAIN; |
| 125 |
retval = SP - (PL_stack_base + oldmark); |
| 126 |
SP = PL_stack_base + oldmark + 1; |
| 127 |
if (SvCUR(thr->errsv)) { |
| 128 |
MUTEX_LOCK(&thr->mutex); |
| 129 |
thr->flags |= THRf_DID_DIE; |
| 130 |
MUTEX_UNLOCK(&thr->mutex); |
| 131 |
av_store(av, 0, &PL_sv_no); |
| 132 |
av_store(av, 1, newSVsv(thr->errsv)); |
| 133 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p died: %s\n", |
| 134 |
thr, SvPV(thr->errsv, PL_na))); |
| 135 |
} |
| 136 |
else { |
| 137 |
DEBUG_S(STMT_START { |
| 138 |
for (i = 1; i <= retval; i++) { |
| 139 |
PerlIO_printf(Perl_debug_log, "%p return[%d] = %s\n", |
| 140 |
thr, i, SvPEEK(SP[i - 1])); |
| 141 |
} |
| 142 |
} STMT_END); |
| 143 |
av_store(av, 0, &PL_sv_yes); |
| 144 |
for (i = 1; i <= retval; i++, SP++) |
| 145 |
sv_setsv(*av_fetch(av, i, TRUE), SvREFCNT_inc(*SP)); |
| 146 |
} |
| 147 |
FREETMPS; |
| 148 |
LEAVE; |
| 149 |
|
| 150 |
#if 0 |
| 151 |
/* removed for debug */ |
| 152 |
SvREFCNT_dec(PL_curstack); |
| 153 |
#endif |
| 154 |
SvREFCNT_dec(thr->cvcache); |
| 155 |
SvREFCNT_dec(thr->threadsv); |
| 156 |
SvREFCNT_dec(thr->specific); |
| 157 |
SvREFCNT_dec(thr->errsv); |
| 158 |
|
| 159 |
/*Safefree(cxstack);*/ |
| 160 |
while (PL_curstackinfo->si_next) |
| 161 |
PL_curstackinfo = PL_curstackinfo->si_next; |
| 162 |
while (PL_curstackinfo) { |
| 163 |
PERL_SI *p = PL_curstackinfo->si_prev; |
| 164 |
SvREFCNT_dec(PL_curstackinfo->si_stack); |
| 165 |
Safefree(PL_curstackinfo->si_cxstack); |
| 166 |
Safefree(PL_curstackinfo); |
| 167 |
PL_curstackinfo = p; |
| 168 |
} |
| 169 |
Safefree(PL_markstack); |
| 170 |
Safefree(PL_scopestack); |
| 171 |
Safefree(PL_savestack); |
| 172 |
Safefree(PL_retstack); |
| 173 |
Safefree(PL_tmps_stack); |
| 174 |
SvREFCNT_dec(PL_ofs_sv); |
| 175 |
|
| 176 |
SvREFCNT_dec(PL_rs); |
| 177 |
SvREFCNT_dec(PL_statname); |
| 178 |
SvREFCNT_dec(PL_errors); |
| 179 |
Safefree(PL_screamfirst); |
| 180 |
Safefree(PL_screamnext); |
| 181 |
Safefree(PL_reg_start_tmp); |
| 182 |
SvREFCNT_dec(PL_lastscream); |
| 183 |
SvREFCNT_dec(PL_defoutgv); |
| 184 |
Safefree(PL_reg_poscache); |
| 185 |
|
| 186 |
MUTEX_LOCK(&thr->mutex); |
| 187 |
thr->thr_done = 1; |
| 188 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 189 |
"%p: threadstart finishing: state is %u\n", |
| 190 |
thr, ThrSTATE(thr))); |
| 191 |
switch (ThrSTATE(thr)) { |
| 192 |
case THRf_R_JOINABLE: |
| 193 |
ThrSETSTATE(thr, THRf_ZOMBIE); |
| 194 |
MUTEX_UNLOCK(&thr->mutex); |
| 195 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 196 |
"%p: R_JOINABLE thread finished\n", thr)); |
| 197 |
break; |
| 198 |
case THRf_R_JOINED: |
| 199 |
ThrSETSTATE(thr, THRf_DEAD); |
| 200 |
MUTEX_UNLOCK(&thr->mutex); |
| 201 |
remove_thread(aTHX_ thr); |
| 202 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 203 |
"%p: R_JOINED thread finished\n", thr)); |
| 204 |
break; |
| 205 |
case THRf_R_DETACHED: |
| 206 |
ThrSETSTATE(thr, THRf_DEAD); |
| 207 |
MUTEX_UNLOCK(&thr->mutex); |
| 208 |
SvREFCNT_dec(av); |
| 209 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 210 |
"%p: DETACHED thread finished\n", thr)); |
| 211 |
remove_thread(aTHX_ thr); /* This might trigger main thread to finish */ |
| 212 |
break; |
| 213 |
default: |
| 214 |
MUTEX_UNLOCK(&thr->mutex); |
| 215 |
croak("panic: illegal state %u at end of threadstart", ThrSTATE(thr)); |
| 216 |
/* NOTREACHED */ |
| 217 |
} |
| 218 |
return THREAD_RET_CAST(av); /* Available for anyone to join with */ |
| 219 |
/* us unless we're detached, in which */ |
| 220 |
/* case noone sees the value anyway. */ |
| 221 |
#endif |
| 222 |
#else |
| 223 |
return THREAD_RET_CAST(NULL); |
| 224 |
#endif |
| 225 |
} |
| 226 |
|
| 227 |
static SV * |
| 228 |
newthread (pTHX_ SV *startsv, AV *initargs, char *classname) |
| 229 |
{ |
| 230 |
#ifdef USE_5005THREADS |
| 231 |
dSP; |
| 232 |
Thread savethread; |
| 233 |
int i; |
| 234 |
SV *sv; |
| 235 |
int err; |
| 236 |
#ifndef THREAD_CREATE |
| 237 |
static pthread_attr_t attr; |
| 238 |
static int attr_inited = 0; |
| 239 |
sigset_t fullmask, oldmask; |
| 240 |
static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
| 241 |
#endif |
| 242 |
|
| 243 |
if (ckWARN(WARN_DEPRECATED)) |
| 244 |
Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), |
| 245 |
"5.005 threads are deprecated"); |
| 246 |
savethread = thr; |
| 247 |
thr = new_struct_thread(thr); |
| 248 |
/* temporarily pretend to be the child thread in case the |
| 249 |
* XPUSHs() below want to grow the child's stack. This is |
| 250 |
* safe, since the other thread is not yet created, and we |
| 251 |
* are the only ones who know about it */ |
| 252 |
PERL_SET_THX(thr); |
| 253 |
SPAGAIN; |
| 254 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 255 |
"%p: newthread (%p), tid is %u, preparing stack\n", |
| 256 |
savethread, thr, thr->tid)); |
| 257 |
/* The following pushes the arg list and startsv onto the *new* stack */ |
| 258 |
PUSHMARK(SP); |
| 259 |
/* Could easily speed up the following greatly */ |
| 260 |
for (i = 0; i <= AvFILL(initargs); i++) |
| 261 |
XPUSHs(SvREFCNT_inc(*av_fetch(initargs, i, FALSE))); |
| 262 |
XPUSHs(SvREFCNT_inc(startsv)); |
| 263 |
PUTBACK; |
| 264 |
|
| 265 |
/* On your marks... */ |
| 266 |
PERL_SET_THX(savethread); |
| 267 |
MUTEX_LOCK(&thr->mutex); |
| 268 |
|
| 269 |
#ifdef THREAD_CREATE |
| 270 |
err = THREAD_CREATE(thr, threadstart); |
| 271 |
#else |
| 272 |
/* Get set... */ |
| 273 |
sigfillset(&fullmask); |
| 274 |
if (sigprocmask(SIG_SETMASK, &fullmask, &oldmask) == -1) |
| 275 |
croak("panic: sigprocmask"); |
| 276 |
err = 0; |
| 277 |
if (!attr_inited) { |
| 278 |
attr_inited = 1; |
| 279 |
err = pthread_attr_init(&attr); |
| 280 |
# ifdef THREAD_CREATE_NEEDS_STACK |
| 281 |
if (err == 0) |
| 282 |
err = pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK); |
| 283 |
if (err) |
| 284 |
croak("panic: pthread_attr_setstacksize failed"); |
| 285 |
# endif |
| 286 |
# ifdef PTHREAD_ATTR_SETDETACHSTATE |
| 287 |
if (err == 0) |
| 288 |
err = PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
| 289 |
if (err) |
| 290 |
croak("panic: pthread_attr_setdetachstate failed"); |
| 291 |
# else |
| 292 |
croak("panic: can't pthread_attr_setdetachstate"); |
| 293 |
# endif |
| 294 |
} |
| 295 |
if (err == 0) |
| 296 |
err = PTHREAD_CREATE(&thr->self, attr, threadstart, (void*) thr); |
| 297 |
#endif |
| 298 |
|
| 299 |
if (err) { |
| 300 |
MUTEX_UNLOCK(&thr->mutex); |
| 301 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 302 |
"%p: create of %p failed %d\n", |
| 303 |
savethread, thr, err)); |
| 304 |
/* Thread creation failed--clean up */ |
| 305 |
SvREFCNT_dec(thr->cvcache); |
| 306 |
remove_thread(aTHX_ thr); |
| 307 |
for (i = 0; i <= AvFILL(initargs); i++) |
| 308 |
SvREFCNT_dec(*av_fetch(initargs, i, FALSE)); |
| 309 |
SvREFCNT_dec(startsv); |
| 310 |
return NULL; |
| 311 |
} |
| 312 |
|
| 313 |
#ifdef THREAD_POST_CREATE |
| 314 |
THREAD_POST_CREATE(thr); |
| 315 |
#else |
| 316 |
if (sigprocmask(SIG_SETMASK, &oldmask, 0)) |
| 317 |
croak("panic: sigprocmask"); |
| 318 |
#endif |
| 319 |
|
| 320 |
sv = newSViv(thr->tid); |
| 321 |
sv_magic(sv, thr->oursv, '~', 0, 0); |
| 322 |
SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
| 323 |
sv = sv_bless(newRV_noinc(sv), gv_stashpv(classname, TRUE)); |
| 324 |
|
| 325 |
/* Go */ |
| 326 |
MUTEX_UNLOCK(&thr->mutex); |
| 327 |
|
| 328 |
return sv; |
| 329 |
#else |
| 330 |
# ifdef USE_ITHREADS |
| 331 |
croak("This perl was built for \"ithreads\", which currently does not support Thread.pm.\n" |
| 332 |
"Run \"perldoc Thread\" for more information"); |
| 333 |
# else |
| 334 |
croak("This perl was not built with support for 5.005-style threads.\n" |
| 335 |
"Run \"perldoc Thread\" for more information"); |
| 336 |
# endif |
| 337 |
return &PL_sv_undef; |
| 338 |
#endif |
| 339 |
} |
| 340 |
|
| 341 |
static Signal_t handle_thread_signal (int sig); |
| 342 |
|
| 343 |
static Signal_t |
| 344 |
handle_thread_signal(int sig) |
| 345 |
{ |
| 346 |
unsigned char c = (unsigned char) sig; |
| 347 |
dTHX; |
| 348 |
/* |
| 349 |
* We're not really allowed to call fprintf in a signal handler |
| 350 |
* so don't be surprised if this isn't robust while debugging |
| 351 |
* with -DL. |
| 352 |
*/ |
| 353 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 354 |
"handle_thread_signal: got signal %d\n", sig)); |
| 355 |
write(sig_pipe[1], &c, 1); |
| 356 |
} |
| 357 |
|
| 358 |
MODULE = Thread PACKAGE = Thread |
| 359 |
PROTOTYPES: DISABLE |
| 360 |
|
| 361 |
void |
| 362 |
new(classname, startsv, ...) |
| 363 |
char * classname |
| 364 |
SV * startsv |
| 365 |
AV * av = av_make(items - 2, &ST(2)); |
| 366 |
PPCODE: |
| 367 |
XPUSHs(sv_2mortal(newthread(aTHX_ startsv, av, classname))); |
| 368 |
|
| 369 |
void |
| 370 |
join(t) |
| 371 |
Thread t |
| 372 |
PREINIT: |
| 373 |
#ifdef USE_5005THREADS |
| 374 |
AV * av; |
| 375 |
int i; |
| 376 |
#endif |
| 377 |
PPCODE: |
| 378 |
#ifdef USE_5005THREADS |
| 379 |
if (t == thr) |
| 380 |
croak("Attempt to join self"); |
| 381 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: joining %p (state %u)\n", |
| 382 |
thr, t, ThrSTATE(t))); |
| 383 |
MUTEX_LOCK(&t->mutex); |
| 384 |
switch (ThrSTATE(t)) { |
| 385 |
case THRf_R_JOINABLE: |
| 386 |
case THRf_R_JOINED: |
| 387 |
ThrSETSTATE(t, THRf_R_JOINED); |
| 388 |
MUTEX_UNLOCK(&t->mutex); |
| 389 |
break; |
| 390 |
case THRf_ZOMBIE: |
| 391 |
ThrSETSTATE(t, THRf_DEAD); |
| 392 |
MUTEX_UNLOCK(&t->mutex); |
| 393 |
remove_thread(aTHX_ t); |
| 394 |
break; |
| 395 |
default: |
| 396 |
MUTEX_UNLOCK(&t->mutex); |
| 397 |
croak("can't join with thread"); |
| 398 |
/* NOTREACHED */ |
| 399 |
} |
| 400 |
JOIN(t, &av); |
| 401 |
|
| 402 |
sv_2mortal((SV*)av); |
| 403 |
|
| 404 |
if (SvTRUE(*av_fetch(av, 0, FALSE))) { |
| 405 |
/* Could easily speed up the following if necessary */ |
| 406 |
for (i = 1; i <= AvFILL(av); i++) |
| 407 |
XPUSHs(*av_fetch(av, i, FALSE)); |
| 408 |
} |
| 409 |
else { |
| 410 |
STRLEN n_a; |
| 411 |
char *mess = SvPV(*av_fetch(av, 1, FALSE), n_a); |
| 412 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 413 |
"%p: join propagating die message: %s\n", |
| 414 |
thr, mess)); |
| 415 |
croak(mess); |
| 416 |
} |
| 417 |
#endif |
| 418 |
|
| 419 |
void |
| 420 |
detach(t) |
| 421 |
Thread t |
| 422 |
CODE: |
| 423 |
#ifdef USE_5005THREADS |
| 424 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: detaching %p (state %u)\n", |
| 425 |
thr, t, ThrSTATE(t))); |
| 426 |
MUTEX_LOCK(&t->mutex); |
| 427 |
switch (ThrSTATE(t)) { |
| 428 |
case THRf_R_JOINABLE: |
| 429 |
ThrSETSTATE(t, THRf_R_DETACHED); |
| 430 |
/* fall through */ |
| 431 |
case THRf_R_DETACHED: |
| 432 |
DETACH(t); |
| 433 |
MUTEX_UNLOCK(&t->mutex); |
| 434 |
break; |
| 435 |
case THRf_ZOMBIE: |
| 436 |
ThrSETSTATE(t, THRf_DEAD); |
| 437 |
DETACH(t); |
| 438 |
MUTEX_UNLOCK(&t->mutex); |
| 439 |
remove_thread(aTHX_ t); |
| 440 |
break; |
| 441 |
default: |
| 442 |
MUTEX_UNLOCK(&t->mutex); |
| 443 |
croak("can't detach thread"); |
| 444 |
/* NOTREACHED */ |
| 445 |
} |
| 446 |
#endif |
| 447 |
|
| 448 |
void |
| 449 |
equal(t1, t2) |
| 450 |
Thread t1 |
| 451 |
Thread t2 |
| 452 |
PPCODE: |
| 453 |
PUSHs((t1 == t2) ? &PL_sv_yes : &PL_sv_no); |
| 454 |
|
| 455 |
void |
| 456 |
flags(t) |
| 457 |
Thread t |
| 458 |
PPCODE: |
| 459 |
#ifdef USE_5005THREADS |
| 460 |
PUSHs(sv_2mortal(newSViv(t->flags))); |
| 461 |
#endif |
| 462 |
|
| 463 |
void |
| 464 |
done(t) |
| 465 |
Thread t |
| 466 |
PPCODE: |
| 467 |
#ifdef USE_5005THREADS |
| 468 |
PUSHs(t->thr_done ? &PL_sv_yes : &PL_sv_no); |
| 469 |
#endif |
| 470 |
|
| 471 |
void |
| 472 |
self(classname) |
| 473 |
char * classname |
| 474 |
PREINIT: |
| 475 |
#ifdef USE_5005THREADS |
| 476 |
SV *sv; |
| 477 |
#endif |
| 478 |
PPCODE: |
| 479 |
#ifdef USE_5005THREADS |
| 480 |
sv = newSViv(thr->tid); |
| 481 |
sv_magic(sv, thr->oursv, '~', 0, 0); |
| 482 |
SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
| 483 |
PUSHs(sv_2mortal(sv_bless(newRV_noinc(sv), |
| 484 |
gv_stashpv(classname, TRUE)))); |
| 485 |
#endif |
| 486 |
|
| 487 |
U32 |
| 488 |
tid(t) |
| 489 |
Thread t |
| 490 |
CODE: |
| 491 |
#ifdef USE_5005THREADS |
| 492 |
MUTEX_LOCK(&t->mutex); |
| 493 |
RETVAL = t->tid; |
| 494 |
MUTEX_UNLOCK(&t->mutex); |
| 495 |
#else |
| 496 |
RETVAL = 0; |
| 497 |
#endif |
| 498 |
OUTPUT: |
| 499 |
RETVAL |
| 500 |
|
| 501 |
void |
| 502 |
DESTROY(t) |
| 503 |
SV * t |
| 504 |
PPCODE: |
| 505 |
PUSHs(t ? &PL_sv_yes : &PL_sv_no); |
| 506 |
|
| 507 |
void |
| 508 |
yield() |
| 509 |
CODE: |
| 510 |
{ |
| 511 |
#ifdef USE_5005THREADS |
| 512 |
YIELD; |
| 513 |
#endif |
| 514 |
} |
| 515 |
|
| 516 |
void |
| 517 |
cond_wait(sv) |
| 518 |
SV * sv |
| 519 |
PREINIT: |
| 520 |
#ifdef USE_5005THREADS |
| 521 |
MAGIC * mg; |
| 522 |
#endif |
| 523 |
CODE: |
| 524 |
#ifdef USE_5005THREADS |
| 525 |
if (SvROK(sv)) |
| 526 |
sv = SvRV(sv); |
| 527 |
|
| 528 |
mg = condpair_magic(sv); |
| 529 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_wait %p\n", thr, sv)); |
| 530 |
MUTEX_LOCK(MgMUTEXP(mg)); |
| 531 |
if (MgOWNER(mg) != thr) { |
| 532 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 533 |
croak("cond_wait for lock that we don't own\n"); |
| 534 |
} |
| 535 |
MgOWNER(mg) = 0; |
| 536 |
COND_SIGNAL(MgOWNERCONDP(mg)); |
| 537 |
COND_WAIT(MgCONDP(mg), MgMUTEXP(mg)); |
| 538 |
while (MgOWNER(mg)) |
| 539 |
COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); |
| 540 |
MgOWNER(mg) = thr; |
| 541 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 542 |
#endif |
| 543 |
|
| 544 |
void |
| 545 |
cond_signal(sv) |
| 546 |
SV * sv |
| 547 |
PREINIT: |
| 548 |
#ifdef USE_5005THREADS |
| 549 |
MAGIC * mg; |
| 550 |
#endif |
| 551 |
CODE: |
| 552 |
#ifdef USE_5005THREADS |
| 553 |
if (SvROK(sv)) |
| 554 |
sv = SvRV(sv); |
| 555 |
|
| 556 |
mg = condpair_magic(sv); |
| 557 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_signal %p\n",thr,sv)); |
| 558 |
MUTEX_LOCK(MgMUTEXP(mg)); |
| 559 |
if (MgOWNER(mg) != thr) { |
| 560 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 561 |
croak("cond_signal for lock that we don't own\n"); |
| 562 |
} |
| 563 |
COND_SIGNAL(MgCONDP(mg)); |
| 564 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 565 |
#endif |
| 566 |
|
| 567 |
void |
| 568 |
cond_broadcast(sv) |
| 569 |
SV * sv |
| 570 |
PREINIT: |
| 571 |
#ifdef USE_5005THREADS |
| 572 |
MAGIC * mg; |
| 573 |
#endif |
| 574 |
CODE: |
| 575 |
#ifdef USE_5005THREADS |
| 576 |
if (SvROK(sv)) |
| 577 |
sv = SvRV(sv); |
| 578 |
|
| 579 |
mg = condpair_magic(sv); |
| 580 |
DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: cond_broadcast %p\n", |
| 581 |
thr, sv)); |
| 582 |
MUTEX_LOCK(MgMUTEXP(mg)); |
| 583 |
if (MgOWNER(mg) != thr) { |
| 584 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 585 |
croak("cond_broadcast for lock that we don't own\n"); |
| 586 |
} |
| 587 |
COND_BROADCAST(MgCONDP(mg)); |
| 588 |
MUTEX_UNLOCK(MgMUTEXP(mg)); |
| 589 |
#endif |
| 590 |
|
| 591 |
void |
| 592 |
list(classname) |
| 593 |
char * classname |
| 594 |
PREINIT: |
| 595 |
#ifdef USE_5005THREADS |
| 596 |
Thread t; |
| 597 |
AV * av; |
| 598 |
SV ** svp; |
| 599 |
int n = 0; |
| 600 |
#endif |
| 601 |
PPCODE: |
| 602 |
#ifdef USE_5005THREADS |
| 603 |
av = newAV(); |
| 604 |
/* |
| 605 |
* Iterate until we have enough dynamic storage for all threads. |
| 606 |
* We mustn't do any allocation while holding threads_mutex though. |
| 607 |
*/ |
| 608 |
MUTEX_LOCK(&PL_threads_mutex); |
| 609 |
do { |
| 610 |
n = PL_nthreads; |
| 611 |
MUTEX_UNLOCK(&PL_threads_mutex); |
| 612 |
if (AvFILL(av) < n - 1) { |
| 613 |
int i = AvFILL(av); |
| 614 |
for (i = AvFILL(av); i < n - 1; i++) { |
| 615 |
SV *sv = newSViv(0); /* fill in tid later */ |
| 616 |
sv_magic(sv, 0, '~', 0, 0); /* fill in other magic later */ |
| 617 |
av_push(av, sv_bless(newRV_noinc(sv), |
| 618 |
gv_stashpv(classname, TRUE))); |
| 619 |
|
| 620 |
} |
| 621 |
} |
| 622 |
MUTEX_LOCK(&PL_threads_mutex); |
| 623 |
} while (n < PL_nthreads); |
| 624 |
n = PL_nthreads; /* Get the final correct value */ |
| 625 |
|
| 626 |
/* |
| 627 |
* At this point, there's enough room to fill in av. |
| 628 |
* Note that we are holding threads_mutex so the list |
| 629 |
* won't change out from under us but all the remaining |
| 630 |
* processing is "fast" (no blocking, malloc etc.) |
| 631 |
*/ |
| 632 |
t = thr; |
| 633 |
svp = AvARRAY(av); |
| 634 |
do { |
| 635 |
SV *sv = (SV*)SvRV(*svp); |
| 636 |
sv_setiv(sv, t->tid); |
| 637 |
SvMAGIC(sv)->mg_obj = SvREFCNT_inc(t->oursv); |
| 638 |
SvMAGIC(sv)->mg_flags |= MGf_REFCOUNTED; |
| 639 |
SvMAGIC(sv)->mg_private = Thread_MAGIC_SIGNATURE; |
| 640 |
t = t->next; |
| 641 |
svp++; |
| 642 |
} while (t != thr); |
| 643 |
/* */ |
| 644 |
MUTEX_UNLOCK(&PL_threads_mutex); |
| 645 |
/* Truncate any unneeded slots in av */ |
| 646 |
av_fill(av, n - 1); |
| 647 |
/* Finally, push all the new objects onto the stack and drop av */ |
| 648 |
EXTEND(SP, n); |
| 649 |
for (svp = AvARRAY(av); n > 0; n--, svp++) |
| 650 |
PUSHs(*svp); |
| 651 |
(void)sv_2mortal((SV*)av); |
| 652 |
#endif |
| 653 |
|
| 654 |
|
| 655 |
MODULE = Thread PACKAGE = Thread::Signal |
| 656 |
|
| 657 |
void |
| 658 |
kill_sighandler_thread() |
| 659 |
PPCODE: |
| 660 |
write(sig_pipe[1], "\0", 1); |
| 661 |
PUSHs(&PL_sv_yes); |
| 662 |
|
| 663 |
void |
| 664 |
init_thread_signals() |
| 665 |
PPCODE: |
| 666 |
PL_sighandlerp = handle_thread_signal; |
| 667 |
if (pipe(sig_pipe) == -1) |
| 668 |
XSRETURN_UNDEF; |
| 669 |
PUSHs(&PL_sv_yes); |
| 670 |
|
| 671 |
void |
| 672 |
await_signal() |
| 673 |
PREINIT: |
| 674 |
unsigned char c; |
| 675 |
SSize_t ret; |
| 676 |
CODE: |
| 677 |
do { |
| 678 |
ret = read(sig_pipe[0], &c, 1); |
| 679 |
} while (ret == -1 && errno == EINTR); |
| 680 |
if (ret == -1) |
| 681 |
croak("panic: await_signal"); |
| 682 |
ST(0) = sv_newmortal(); |
| 683 |
if (ret) |
| 684 |
sv_setsv(ST(0), c ? PL_psig_ptr[c] : &PL_sv_no); |
| 685 |
DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 686 |
"await_signal returning %s\n", SvPEEK(ST(0)))); |
| 687 |
|
| 688 |
MODULE = Thread PACKAGE = Thread::Specific |
| 689 |
|
| 690 |
void |
| 691 |
data(classname = "Thread::Specific") |
| 692 |
char * classname |
| 693 |
PPCODE: |
| 694 |
#ifdef USE_5005THREADS |
| 695 |
if (AvFILL(thr->specific) == -1) { |
| 696 |
GV *gv = gv_fetchpv("Thread::Specific::FIELDS", TRUE, SVt_PVHV); |
| 697 |
av_store(thr->specific, 0, newRV((SV*)GvHV(gv))); |
| 698 |
} |
| 699 |
XPUSHs(sv_bless(newRV((SV*)thr->specific),gv_stashpv(classname,TRUE))); |
| 700 |
#endif |
