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Comparing Coro/Coro/State.xs (file contents):
Revision 1.13 by root, Mon Jul 23 22:09:39 2001 UTC vs.
Revision 1.24 by root, Tue Aug 14 14:56:22 2001 UTC

… …
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include "libcoro/coro.c" 5#include "libcoro/coro.c"
6 6
7#include <signal.h>
8
7#ifdef HAVE_MMAP 9#ifdef HAVE_MMAP
8# include <unistd.h> 10# include <unistd.h>
9# include <sys/mman.h> 11# include <sys/mman.h>
12# ifndef MAP_ANON
13# ifdef MAP_ANONYMOUS
14# define MAP_ANON MAP_ANONYMOUS
15# else
16# undef HAVE_MMAP
17# endif
18# endif
10#endif 19#endif
11 20
12#define MAY_FLUSH /* increases codesize */ 21#define MAY_FLUSH /* increases codesize */
13 22
14#define SUB_INIT "Coro::State::initialize" 23#define SUB_INIT "Coro::State::initialize"
24#define UCORO_STATE "_coro_state"
15 25
16#define TRANSFER_SAVE_DEFAV 0x00000001 26/* The next macro should delcare a variable stacklevel that contains and approximation
17#define TRANSFER_SAVE_DEFSV 0x00000002 27 * to the current C stack pointer. Its property is that it changes with each call
18#define TRANSFER_SAVE_ERRSV 0x00000004 28 * and should be unique. */
19#define TRANSFER_SAVE_CCTXT 0x00000008 29#define dSTACKLEVEL void *stacklevel = &stacklevel
20 30
21#define TRANSFER_SAVE_ALL -1 31#define labs(l) ((l) >= 0 ? (l) : -(l))
32
33#include "CoroAPI.h"
34
35static struct CoroAPI coroapi;
36
37/* this is actually not only the c stack but also c registers etc... */
38typedef struct {
39 int refcnt; /* pointer reference counter */
40 int usecnt; /* shared by how many coroutines */
41 int gencnt; /* generation counter */
42
43 coro_context cctx;
44
45 void *sptr;
46 long ssize; /* positive == mmap, otherwise malloc */
47} coro_stack;
22 48
23struct coro { 49struct coro {
24 /* the optional C context */ 50 /* the optional C context */
25 coro_context cctx; 51 coro_stack *stack;
26 void *sptr; 52 void *cursp;
27 long ssize; 53 int gencnt;
28 54
29 /* optionally saved, might be zero */ 55 /* optionally saved, might be zero */
30 AV *defav; 56 AV *defav;
31 SV *defsv; 57 SV *defsv;
32 SV *errsv; 58 SV *errsv;
33 59
34 /* saved global state not related to stacks */ 60 /* saved global state not related to stacks */
35 U8 dowarn; 61 U8 dowarn;
62 I32 in_eval;
36 63
37 /* the stacks and related info (callchain etc..) */ 64 /* the stacks and related info (callchain etc..) */
38 PERL_SI *curstackinfo; 65 PERL_SI *curstackinfo;
39 AV *curstack; 66 AV *curstack;
40 AV *mainstack; 67 AV *mainstack;
… …
58 I32 savestack_max; 85 I32 savestack_max;
59 OP **retstack; 86 OP **retstack;
60 I32 retstack_ix; 87 I32 retstack_ix;
61 I32 retstack_max; 88 I32 retstack_max;
62 COP *curcop; 89 COP *curcop;
63 JMPENV start_env;
64 JMPENV *top_env; 90 JMPENV *top_env;
65 91
66 /* data associated with this coroutine (initial args) */ 92 /* data associated with this coroutine (initial args) */
67 AV *args; 93 AV *args;
68}; 94};
… …
70typedef struct coro *Coro__State; 96typedef struct coro *Coro__State;
71typedef struct coro *Coro__State_or_hashref; 97typedef struct coro *Coro__State_or_hashref;
72 98
73static AV *main_mainstack; /* used to differentiate between $main and others */ 99static AV *main_mainstack; /* used to differentiate between $main and others */
74static HV *coro_state_stash; 100static HV *coro_state_stash;
101static SV *ucoro_state_sv;
102static U32 ucoro_state_hash;
75static HV *padlist_cache; 103static HV *padlist_cache;
76 104
77/* mostly copied from op.c:cv_clone2 */ 105/* mostly copied from op.c:cv_clone2 */
78STATIC AV * 106STATIC AV *
79clone_padlist (AV *protopadlist) 107clone_padlist (AV *protopadlist)
… …
251 279
252static void 280static void
253load_state(pTHX_ Coro__State c) 281load_state(pTHX_ Coro__State c)
254{ 282{
255 PL_dowarn = c->dowarn; 283 PL_dowarn = c->dowarn;
284 PL_in_eval = c->in_eval;
256 285
257 PL_curstackinfo = c->curstackinfo; 286 PL_curstackinfo = c->curstackinfo;
258 PL_curstack = c->curstack; 287 PL_curstack = c->curstack;
259 PL_mainstack = c->mainstack; 288 PL_mainstack = c->mainstack;
260 PL_stack_sp = c->stack_sp; 289 PL_stack_sp = c->stack_sp;
… …
277 PL_savestack_max = c->savestack_max; 306 PL_savestack_max = c->savestack_max;
278 PL_retstack = c->retstack; 307 PL_retstack = c->retstack;
279 PL_retstack_ix = c->retstack_ix; 308 PL_retstack_ix = c->retstack_ix;
280 PL_retstack_max = c->retstack_max; 309 PL_retstack_max = c->retstack_max;
281 PL_curcop = c->curcop; 310 PL_curcop = c->curcop;
282 PL_start_env = c->start_env;
283 PL_top_env = c->top_env; 311 PL_top_env = c->top_env;
284 312
285 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 313 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
286 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 314 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
287 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 315 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
… …
386 /* but if it's missing the defav contents magically get replaced sometimes */ 414 /* but if it's missing the defav contents magically get replaced sometimes */
387 if (c->defav) 415 if (c->defav)
388 av_reify (c->defav); 416 av_reify (c->defav);
389 417
390 c->dowarn = PL_dowarn; 418 c->dowarn = PL_dowarn;
419 c->in_eval = PL_in_eval;
391 420
392 c->curstackinfo = PL_curstackinfo; 421 c->curstackinfo = PL_curstackinfo;
393 c->curstack = PL_curstack; 422 c->curstack = PL_curstack;
394 c->mainstack = PL_mainstack; 423 c->mainstack = PL_mainstack;
395 c->stack_sp = PL_stack_sp; 424 c->stack_sp = PL_stack_sp;
… …
412 c->savestack_max = PL_savestack_max; 441 c->savestack_max = PL_savestack_max;
413 c->retstack = PL_retstack; 442 c->retstack = PL_retstack;
414 c->retstack_ix = PL_retstack_ix; 443 c->retstack_ix = PL_retstack_ix;
415 c->retstack_max = PL_retstack_max; 444 c->retstack_max = PL_retstack_max;
416 c->curcop = PL_curcop; 445 c->curcop = PL_curcop;
417 c->start_env = PL_start_env;
418 c->top_env = PL_top_env; 446 c->top_env = PL_top_env;
419} 447}
420 448
421/* 449/*
422 * allocate various perl stacks. This is an exact copy 450 * allocate various perl stacks. This is an exact copy
… …
434 462
435 PL_stack_base = AvARRAY(PL_curstack); 463 PL_stack_base = AvARRAY(PL_curstack);
436 PL_stack_sp = PL_stack_base; 464 PL_stack_sp = PL_stack_base;
437 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 465 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
438 466
439 New(50,PL_tmps_stack,64,SV*); 467 New(50,PL_tmps_stack,96,SV*);
440 PL_tmps_floor = -1; 468 PL_tmps_floor = -1;
441 PL_tmps_ix = -1; 469 PL_tmps_ix = -1;
442 PL_tmps_max = 64; 470 PL_tmps_max = 96;
443 471
444 New(54,PL_markstack,12,I32); 472 New(54,PL_markstack,16,I32);
445 PL_markstack_ptr = PL_markstack; 473 PL_markstack_ptr = PL_markstack;
446 PL_markstack_max = PL_markstack + 12; 474 PL_markstack_max = PL_markstack + 16;
447 475
448 SET_MARK_OFFSET; 476 SET_MARK_OFFSET;
449 477
450 New(54,PL_scopestack,12,I32); 478 New(54,PL_scopestack,16,I32);
451 PL_scopestack_ix = 0; 479 PL_scopestack_ix = 0;
452 PL_scopestack_max = 12; 480 PL_scopestack_max = 16;
453 481
454 New(54,PL_savestack,64,ANY); 482 New(54,PL_savestack,96,ANY);
455 PL_savestack_ix = 0; 483 PL_savestack_ix = 0;
456 PL_savestack_max = 64; 484 PL_savestack_max = 96;
457 485
458 New(54,PL_retstack,8,OP*); 486 New(54,PL_retstack,8,OP*);
459 PL_retstack_ix = 0; 487 PL_retstack_ix = 0;
460 PL_retstack_max = 8; 488 PL_retstack_max = 8;
461} 489}
… …
486 dSP; 514 dSP;
487 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 515 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
488 PUTBACK; /* possibly superfluous */ 516 PUTBACK; /* possibly superfluous */
489 } 517 }
490 518
519 if (PL_main_cv != Nullcv) /* don't during destruction. hack? */
491 dounwind(-1); 520 dounwind(-1);
492 521
493 SvREFCNT_dec(PL_curstackinfo->si_stack); 522 SvREFCNT_dec(PL_curstackinfo->si_stack);
494 Safefree(PL_curstackinfo->si_cxstack); 523 Safefree(PL_curstackinfo->si_cxstack);
495 Safefree(PL_curstackinfo); 524 Safefree(PL_curstackinfo);
496 PL_curstackinfo = p; 525 PL_curstackinfo = p;
… …
502 Safefree(PL_savestack); 531 Safefree(PL_savestack);
503 Safefree(PL_retstack); 532 Safefree(PL_retstack);
504} 533}
505 534
506static void 535static void
507allocate_stack (Coro__State ctx) 536allocate_stack (Coro__State ctx, int alloc)
508{ 537{
538 coro_stack *stack;
539
540 New (0, stack, 1, coro_stack);
541
542 stack->refcnt = 1;
543 stack->usecnt = 1;
544 stack->gencnt = ctx->gencnt = 0;
545 if (alloc)
546 {
509#ifdef HAVE_MMAP 547#ifdef HAVE_MMAP
510 ctx->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-use */ 548 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
511 ctx->sptr = mmap (0, ctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); 549 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0);
512 if (ctx->sptr == (void *)-1) 550 if (stack->sptr == (void *)-1)
513#endif 551#endif
514 { 552 {
515 /*FIXME*//*D*//* reasonable stack size! */ 553 /*FIXME*//*D*//* reasonable stack size! */
516 ctx->ssize = 4096 * sizeof (long); 554 stack->ssize = -4096 * sizeof (long);
517 New (0, ctx->sptr, 4096, long); 555 New (0, stack->sptr, 4096, long);
556 }
518 } 557 }
558 else
559 stack->sptr = 0;
560
561 ctx->stack = stack;
519} 562}
520 563
521static void 564static void
522deallocate_stack (Coro__State ctx) 565deallocate_stack (Coro__State ctx)
523{ 566{
567 coro_stack *stack = ctx->stack;
568
569 ctx->stack = 0;
570
571 if (stack)
572 {
573 if (!--stack->refcnt)
574 {
524#ifdef HAVE_MMAP 575#ifdef HAVE_MMAP
525 munmap (ctx->sptr, ctx->ssize); 576 if (stack->ssize > 0 && stack->sptr)
577 munmap (stack->sptr, stack->ssize);
578 else
526#else 579#else
527 Safefree (ctx->sptr); 580 Safefree (stack->sptr);
528#endif 581#endif
582 Safefree (stack);
583 }
584 else if (ctx->gencnt == stack->gencnt)
585 --stack->usecnt;
586 }
529} 587}
530 588
531/* might go away together with optional SAVE_CCTXT */
532static void 589static void
533setup_coro (void *arg) 590setup_coro (void *arg)
534{ 591{
535 /* 592 /*
536 * emulate part of the perl startup here. 593 * emulate part of the perl startup here.
… …
538 dSP; 595 dSP;
539 Coro__State ctx = (Coro__State)arg; 596 Coro__State ctx = (Coro__State)arg;
540 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 597 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE);
541 598
542 coro_init_stacks (aTHX); 599 coro_init_stacks (aTHX);
543 JMPENV_BOOTSTRAP;
544 SPAGAIN;
545
546 /*PL_curcop = 0;*/ 600 /*PL_curcop = 0;*/
601 /*PL_in_eval = PL_in_eval;*/ /* inherit */
547 SvREFCNT_dec (GvAV (PL_defgv)); 602 SvREFCNT_dec (GvAV (PL_defgv));
548 GvAV (PL_defgv) = ctx->args; 603 GvAV (PL_defgv) = ctx->args;
549 604
605 SPAGAIN;
606
550 if (ctx->sptr) 607 if (ctx->stack)
551 { 608 {
609 ctx->cursp = 0;
610
552 PUSHMARK(SP); 611 PUSHMARK(SP);
553 PUTBACK; 612 PUTBACK;
554 (void) call_sv (sub_init, G_VOID|G_NOARGS); 613 (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL);
614
615 if (SvTRUE (ERRSV))
616 croak (NULL);
617 else
555 croak ("FATAL: CCTXT coroutine returned!"); 618 croak ("FATAL: CCTXT coroutine returned!");
556 } 619 }
557 else 620 else
558 { 621 {
559 UNOP myop; 622 UNOP myop;
560 623
… …
579 642
580 ENTER; /* necessary e.g. for dounwind */ 643 ENTER; /* necessary e.g. for dounwind */
581 } 644 }
582} 645}
583 646
647static void
648continue_coro (void *arg)
649{
650 /*
651 * this is a _very_ stripped down perl interpreter ;)
652 */
653 Coro__State ctx = (Coro__State)arg;
654
655 /*FIXME*//* must set up top_env here */
656 ctx->cursp = 0;
657 PL_op = PL_op->op_next;
658 CALLRUNOPS(aTHX);
659
660 abort ();
661}
662
584STATIC void 663STATIC void
585transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 664transfer(pTHX_ struct coro *prev, struct coro *next, int flags)
586{ 665{
587 dSP; 666 dSP;
667 dSTACKLEVEL;
588 668
589 if (prev != next) 669 if (prev != next)
590 { 670 {
591 /*
592 * this could be done in newprocess which would lead to
593 * extremely elegant and fast (basically just SAVE/LOAD)
594 * code here, but lazy allocation of stacks has also
595 * some virtues and the overhead of the if() is nil.
596 */
597 if (next->mainstack) 671 if (next->mainstack)
598 { 672 {
599 SAVE (prev, flags); 673 SAVE (prev, flags);
600 LOAD (next); 674 LOAD (next);
601 675
602 /* mark this state as in-use */ 676 /* mark this state as in-use */
603 next->mainstack = 0; 677 next->mainstack = 0;
604 next->tmps_ix = -2; 678 next->tmps_ix = -2;
605 679
680 /* stacklevel changed? if yes, grab the stack for us! */
606 if (flags & TRANSFER_SAVE_CCTXT) 681 if (flags & TRANSFER_SAVE_CCTXT)
607 { 682 {
608 if (!next->ssize)
609 croak ("destination coroutine has no CCTXT (%p, %d)", next->sptr, next->ssize);
610
611 if (!prev->ssize) 683 if (!prev->stack)
612 prev->ssize = 1; /* mark cctx as valid ;) */ 684 allocate_stack (prev, 0);
685 else if (prev->cursp != stacklevel
686 && prev->stack->usecnt > 1)
687 {
688 prev->gencnt = ++prev->stack->gencnt;
689 prev->stack->usecnt = 1;
690 }
613 691
692 /* has our stack been invalidated? */
693 if (next->stack && next->stack->gencnt != next->gencnt)
694 {
695 deallocate_stack (next);
696 allocate_stack (next, 1);
697 coro_create (&(next->stack->cctx),
698 continue_coro, (void *)next,
699 next->stack->sptr, labs (next->stack->ssize));
700 }
701
614 coro_transfer (&(prev->cctx), &(next->cctx)); 702 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
615 } 703 }
616 704
617 } 705 }
618 else if (next->tmps_ix == -2) 706 else if (next->tmps_ix == -2)
619 croak ("tried to transfer to running coroutine"); 707 croak ("tried to transfer to running coroutine");
… …
621 { 709 {
622 SAVE (prev, -1); /* first get rid of the old state */ 710 SAVE (prev, -1); /* first get rid of the old state */
623 711
624 if (flags & TRANSFER_SAVE_CCTXT) 712 if (flags & TRANSFER_SAVE_CCTXT)
625 { 713 {
626 if (!next->ssize) 714 if (!prev->stack)
715 allocate_stack (prev, 0);
716
717 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
627 { 718 {
719 setup_coro (next);
720
721 prev->stack->refcnt++;
722 prev->stack->usecnt++;
723 next->stack = prev->stack;
724 next->gencnt = prev->gencnt;
725 }
726 else
727 {
628 allocate_stack (next); 728 allocate_stack (next, 1);
629 coro_create (&(next->cctx), 729 coro_create (&(next->stack->cctx),
630 setup_coro, (void *)next, 730 setup_coro, (void *)next,
631 next->sptr, next->ssize); 731 next->stack->sptr, labs (next->stack->ssize));
732 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
632 } 733 }
633
634 if (!prev->ssize)
635 prev->ssize = 1; /* mark cctx as valid ;) */
636
637 coro_transfer (&(prev->cctx), &(next->cctx));
638 } 734 }
639 else 735 else
640 setup_coro (next); 736 setup_coro (next);
641 } 737 }
642 } 738 }
739
740 next->cursp = stacklevel;
741}
742
743static struct coro *
744sv_to_coro (SV *arg, const char *funcname, const char *varname)
745{
746 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
747 {
748 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);
749
750 if (!he)
751 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
752
753 arg = HeVAL(he);
754 }
755
756 /* must also be changed inside Coro::Cont::yield */
757 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)
758 return (struct coro *) SvIV((SV*)SvRV(arg));
759 else
760 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);
761}
762
763static void
764api_transfer(pTHX_ SV *prev, SV *next, int flags)
765{
766 transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"),
767 sv_to_coro (next, "Coro::transfer", "next"),
768 flags);
769}
770
771/** Coro ********************************************************************/
772
773#define PRIO_MAX 3
774#define PRIO_HIGH 1
775#define PRIO_NORMAL 0
776#define PRIO_LOW -1
777#define PRIO_IDLE -3
778#define PRIO_MIN -4
779
780/* for Coro.pm */
781static GV *coro_current, *coro_idle;
782static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
783
784static void
785coro_enq (SV *sv)
786{
787 if (SvROK (sv))
788 {
789 SV *hv = SvRV (sv);
790 if (SvTYPE (hv) == SVt_PVHV)
791 {
792 SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0);
793 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
794
795 prio = prio > PRIO_MAX ? PRIO_MAX
796 : prio < PRIO_MIN ? PRIO_MIN
797 : prio;
798
799 av_push (coro_ready [prio - PRIO_MIN], sv);
800
801 return;
802 }
803 }
804
805 croak ("Coro::ready tried to enqueue something that is not a coroutine");
806}
807
808static SV *
809coro_deq (int min_prio)
810{
811 int prio = PRIO_MAX - PRIO_MIN;
812
813 min_prio -= PRIO_MIN;
814 if (min_prio < 0)
815 min_prio = 0;
816
817 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
818 if (av_len (coro_ready[prio]) >= 0)
819 return av_shift (coro_ready[prio]);
820
821 return 0;
822}
823
824static void
825api_ready (SV *coro)
826{
827 coro_enq (SvREFCNT_inc (coro));
828}
829
830static void
831api_schedule (int cede)
832{
833 SV *prev, *next;
834
835 prev = GvSV (coro_current);
836
837 if (cede)
838 coro_enq (SvREFCNT_inc (prev));
839
840 next = coro_deq (PRIO_MIN);
841
842 if (!next)
843 next = SvREFCNT_inc (GvSV (coro_idle));
844
845 GvSV (coro_current) = SvREFCNT_inc (next);
846 transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
847 sv_to_coro (next, "Coro::schedule", "next coroutine"),
848 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
849 SvREFCNT_dec (next);
850 SvREFCNT_dec (prev);
643} 851}
644 852
645MODULE = Coro::State PACKAGE = Coro::State 853MODULE = Coro::State PACKAGE = Coro::State
646 854
647PROTOTYPES: ENABLE 855PROTOTYPES: ENABLE
648 856
649BOOT: 857BOOT:
650{ /* {} necessary for stoopid perl-5.6.x */ 858{ /* {} necessary for stoopid perl-5.6.x */
859 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
860 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
651 coro_state_stash = gv_stashpvn ("Coro::State", 10, TRUE); 861 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
652 862
653 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 863 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
654 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 864 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
655 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 865 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
656 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 866 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
657 867
658 if (!padlist_cache) 868 if (!padlist_cache)
659 padlist_cache = newHV (); 869 padlist_cache = newHV ();
660 870
661 main_mainstack = PL_mainstack; 871 main_mainstack = PL_mainstack;
872
873 {
874 SV *sv = perl_get_sv("Coro::API", 1);
875
876 coroapi.ver = CORO_API_VERSION - 1;
877 coroapi.transfer = api_transfer;
878 coroapi.schedule = api_schedule;
879 coroapi.ready = api_ready;
880
881 GCoroAPI = &coroapi;
882 sv_setiv(sv, (IV)&coroapi);
883 SvREADONLY_on(sv);
884 }
662} 885}
663 886
664Coro::State 887Coro::State
665_newprocess(args) 888_newprocess(args)
666 SV * args 889 SV * args
… …
673 896
674 New (0, coro, 1, struct coro); 897 New (0, coro, 1, struct coro);
675 898
676 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 899 coro->args = (AV *)SvREFCNT_inc (SvRV (args));
677 coro->mainstack = 0; /* actual work is done inside transfer */ 900 coro->mainstack = 0; /* actual work is done inside transfer */
678 coro->sptr = 0; 901 coro->stack = 0;
679 coro->ssize = 0;
680 902
681 RETVAL = coro; 903 RETVAL = coro;
682 OUTPUT: 904 OUTPUT:
683 RETVAL 905 RETVAL
684 906
685void 907void
686transfer(prev, next, flags = TRANSFER_SAVE_ALL) 908transfer(prev, next, flags)
687 Coro::State_or_hashref prev 909 Coro::State_or_hashref prev
688 Coro::State_or_hashref next 910 Coro::State_or_hashref next
689 int flags 911 int flags
690 PROTOTYPE: @ 912 PROTOTYPE: @
691 CODE: 913 CODE:
914 PUTBACK;
692 transfer (aTHX_ prev, next, flags); 915 transfer (aTHX_ prev, next, flags);
916 SPAGAIN;
693 917
694void 918void
695DESTROY(coro) 919DESTROY(coro)
696 Coro::State coro 920 Coro::State coro
697 CODE: 921 CODE:
… …
708 LOAD((&temp)); /* this will get rid of defsv etc.. */ 932 LOAD((&temp)); /* this will get rid of defsv etc.. */
709 933
710 coro->mainstack = 0; 934 coro->mainstack = 0;
711 } 935 }
712 936
713 if (coro->sptr)
714 {
715 deallocate_stack (coro); 937 deallocate_stack (coro);
716 coro->sptr = 0;
717 }
718 938
719 Safefree (coro); 939 Safefree (coro);
720 940
721void 941void
722flush() 942flush()
723 CODE: 943 CODE:
724#ifdef MAY_FLUSH 944#ifdef MAY_FLUSH
725 flush_padlist_cache (); 945 flush_padlist_cache ();
726#endif 946#endif
727 947
948void
949_exit(code)
950 int code
951 PROTOTYPE: $
952 CODE:
953#if defined(__GLIBC__) || _POSIX_C_SOURCE
954 _exit (code);
955#else
956 signal (SIGTERM, SIG_DFL);
957 raise (SIGTERM);
958 exit (code);
959#endif
960
728MODULE = Coro::State PACKAGE = Coro::Cont 961MODULE = Coro::State PACKAGE = Coro::Cont
729 962
730# this is slightly dirty 963# this is slightly dirty (should expose a c-level api)
731 964
732void 965void
733yield(...) 966yield(...)
734 PROTOTYPE: @ 967 PROTOTYPE: @
735 CODE: 968 CODE:
… …
753 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 986 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
754 SvREFCNT_dec (sv); 987 SvREFCNT_dec (sv);
755 988
756 transfer(aTHX_ prev, next, 0); 989 transfer(aTHX_ prev, next, 0);
757 990
991MODULE = Coro::State PACKAGE = Coro
992
993# this is slightly dirty (should expose a c-level api)
994
995BOOT:
996{
997 int i;
998 HV *stash = gv_stashpv ("Coro", TRUE);
999
1000 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
1001 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1002 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1003 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
1004 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1005 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
1006
1007 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1008 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1009
1010 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1011 coro_ready[i] = newAV ();
1012}
1013
1014void
1015ready(self)
1016 SV * self
1017 CODE:
1018 api_ready (self);
1019
1020void
1021schedule(...)
1022 ALIAS:
1023 cede = 1
1024 CODE:
1025 api_schedule (ix);
1026

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