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/cvs/Coro/Coro/State.xs
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Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC

… …
101#else 101#else
102# define LOCK (void)0 102# define LOCK (void)0
103# define UNLOCK (void)0 103# define UNLOCK (void)0
104#endif 104#endif
105 105
106struct io_state
107{
108 int errorno;
109 I32 laststype;
110 int laststatval;
111 Stat_t statcache;
112};
113
106static struct CoroAPI coroapi; 114static struct CoroAPI coroapi;
107static AV *main_mainstack; /* used to differentiate between $main and others */ 115static AV *main_mainstack; /* used to differentiate between $main and others */
108static HV *coro_state_stash, *coro_stash; 116static HV *coro_state_stash, *coro_stash;
109static SV *coro_mortal; /* will be freed after next transfer */ 117static SV *coro_mortal; /* will be freed after next transfer */
110 118
… …
497 505
498 { 506 {
499 dSP; 507 dSP;
500 LOGOP myop; 508 LOGOP myop;
501 509
502 /* I have no idea why this is needed, but it is */
503 PUSHMARK (SP);
504
505 SvREFCNT_dec (GvAV (PL_defgv)); 510 SvREFCNT_dec (GvAV (PL_defgv));
506 GvAV (PL_defgv) = coro->args; coro->args = 0; 511 GvAV (PL_defgv) = coro->args; coro->args = 0;
507 512
508 Zero (&myop, 1, LOGOP); 513 Zero (&myop, 1, LOGOP);
509 myop.op_next = Nullop; 514 myop.op_next = Nullop;
510 myop.op_flags = OPf_WANT_VOID; 515 myop.op_flags = OPf_WANT_VOID;
511 516
512 PL_op = (OP *)&myop;
513
514 PUSHMARK (SP); 517 PUSHMARK (SP);
515 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 518 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516 PUTBACK; 519 PUTBACK;
520 PL_op = (OP *)&myop;
517 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 521 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518 SPAGAIN; 522 SPAGAIN;
519 } 523 }
520 524
521 ENTER; /* necessary e.g. for dounwind */ 525 ENTER; /* necessary e.g. for dounwind */
… …
529 SvREFCNT_dec (coro_mortal); 533 SvREFCNT_dec (coro_mortal);
530 coro_mortal = 0; 534 coro_mortal = 0;
531 } 535 }
532} 536}
533 537
538/* inject a fake call to Coro::State::_cctx_init into the execution */
534static void NOINLINE 539static void NOINLINE
535prepare_cctx (coro_cctx *cctx) 540prepare_cctx (coro_cctx *cctx)
536{ 541{
537 dSP; 542 dSP;
538 LOGOP myop; 543 LOGOP myop;
539 544
540 Zero (&myop, 1, LOGOP); 545 Zero (&myop, 1, LOGOP);
541 myop.op_next = PL_op; 546 myop.op_next = PL_op;
542 myop.op_flags = OPf_WANT_VOID; 547 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
543
544 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545 548
546 PUSHMARK (SP); 549 PUSHMARK (SP);
550 EXTEND (SP, 2);
551 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 552 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548 PUTBACK; 553 PUTBACK;
554 PL_op = (OP *)&myop;
549 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 555 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550 SPAGAIN; 556 SPAGAIN;
551} 557}
552 558
553static void 559static void
554coro_run (void *arg) 560coro_run (void *arg)
555{ 561{
556 /* coro_run is the alternative epilogue of transfer() */ 562 /* coro_run is the alternative tail of transfer(), so unlock here. */
557 UNLOCK; 563 UNLOCK;
558 564
559 /* 565 /*
560 * this is a _very_ stripped down perl interpreter ;) 566 * this is a _very_ stripped down perl interpreter ;)
561 */ 567 */
… …
563 569
564 /* inject call to cctx_init */ 570 /* inject call to cctx_init */
565 prepare_cctx ((coro_cctx *)arg); 571 prepare_cctx ((coro_cctx *)arg);
566 572
567 /* somebody will hit me for both perl_run and PL_restartop */ 573 /* somebody will hit me for both perl_run and PL_restartop */
574 PL_restartop = PL_op;
568 perl_run (PL_curinterp); 575 perl_run (PL_curinterp);
569 576
570 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 577 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571 abort (); 578 abort ();
572} 579}
… …
581 New (0, cctx, 1, coro_cctx); 588 New (0, cctx, 1, coro_cctx);
582 589
583#if HAVE_MMAP 590#if HAVE_MMAP
584 591
585 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 592 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
586 /* mmap suppsedly does allocate-on-write for us */ 593 /* mmap supposedly does allocate-on-write for us */
587 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 594 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
588 595
589 if (cctx->sptr == (void *)-1) 596 if (cctx->sptr == (void *)-1)
590 { 597 {
591 perror ("FATAL: unable to mmap stack for coroutine"); 598 perror ("FATAL: unable to mmap stack for coroutine");
… …
1231 1238
1232SV * 1239SV *
1233_get_state () 1240_get_state ()
1234 CODE: 1241 CODE:
1235{ 1242{
1236 struct { 1243 RETVAL = newSV (sizeof (struct io_state));
1237 int errorno; 1244 struct io_state *data = (struct io_state *)SvPVX (RETVAL);
1238 int laststype; 1245 SvCUR_set (RETVAL, sizeof (struct io_state));
1239 int laststatval; 1246 SvPOK_only (RETVAL);
1240 Stat_t statcache;
1241 } data;
1242 1247
1243 data.errorno = errno; 1248 data->errorno = errno;
1244 data.laststype = PL_laststype; 1249 data->laststype = PL_laststype;
1245 data.laststatval = PL_laststatval; 1250 data->laststatval = PL_laststatval;
1246 data.statcache = PL_statcache; 1251 data->statcache = PL_statcache;
1247
1248 RETVAL = newSVpvn ((char *)&data, sizeof data);
1249} 1252}
1250 OUTPUT: 1253 OUTPUT:
1251 RETVAL 1254 RETVAL
1252 1255
1253void 1256void
1254_set_state (char *data_) 1257_set_state (char *data_)
1255 PROTOTYPE: $ 1258 PROTOTYPE: $
1256 CODE: 1259 CODE:
1257{ 1260{
1258 struct { 1261 struct io_state *data = (void *)data_;
1259 int errorno;
1260 int laststype;
1261 int laststatval;
1262 Stat_t statcache;
1263 } *data = (void *)data_;
1264 1262
1265 errno = data->errorno; 1263 errno = data->errorno;
1266 PL_laststype = data->laststype; 1264 PL_laststype = data->laststype;
1267 PL_laststatval = data->laststatval; 1265 PL_laststatval = data->laststatval;
1268 PL_statcache = data->statcache; 1266 PL_statcache = data->statcache;
1269} 1267}
1268

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