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Comparing Coro/Coro/State.xs (file contents):
Revision 1.21 by root, Sat Aug 11 19:59:19 2001 UTC vs.
Revision 1.40 by root, Tue Nov 27 01:41:41 2001 UTC

… …
7#include <signal.h> 7#include <signal.h>
8 8
9#ifdef HAVE_MMAP 9#ifdef HAVE_MMAP
10# include <unistd.h> 10# include <unistd.h>
11# include <sys/mman.h> 11# include <sys/mman.h>
12# ifndef MAP_ANON
13# ifdef MAP_ANONYMOUS 12# ifndef MAP_ANONYMOUS
14# define MAP_ANON MAP_ANONYMOUS 13# ifdef MAP_ANON
14# define MAP_ANONYMOUS MAP_ANON
15# else 15# else
16# undef HAVE_MMAP 16# undef HAVE_MMAP
17# endif 17# endif
18# endif 18# endif
19#endif 19#endif
20 20
21#define MAY_FLUSH /* increases codesize */ 21#define MAY_FLUSH /* increases codesize and is rarely used */
22
23/* perl-related */
24#define TRANSFER_SAVE_DEFAV 0x00000001
25#define TRANSFER_SAVE_DEFSV 0x00000002
26#define TRANSFER_SAVE_ERRSV 0x00000004
27/* c-related */
28#define TRANSFER_SAVE_CCTXT 0x00000008
29#ifdef CORO_LAZY_STACK
30# define TRANSFER_LAZY_STACK 0x00000010
31#else
32# define TRANSFER_LAZY_STACK 0x00000000
33#endif
34
35#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \
36 |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT)
37 22
38#define SUB_INIT "Coro::State::initialize" 23#define SUB_INIT "Coro::State::initialize"
39#define UCORO_STATE "_coro_state" 24#define UCORO_STATE "_coro_state"
40 25
41/* The next macro should delcare a variable stacklevel that contains and approximation 26/* The next macro should declare a variable stacklevel that contains and approximation
42 * to the current C stack pointer. It's property is that it changes with each call 27 * to the current C stack pointer. Its property is that it changes with each call
43 * and should be unique. */ 28 * and should be unique. */
44#define dSTACKLEVEL void *stacklevel = &stacklevel 29#define dSTACKLEVEL void *stacklevel = &stacklevel
45 30
31#define IN_DESTRUCT (PL_main_cv == Nullcv)
32
46#define labs(l) ((l) >= 0 ? (l) : -(l)) 33#define labs(l) ((l) >= 0 ? (l) : -(l))
34
35#include "CoroAPI.h"
36
37static struct CoroAPI coroapi;
47 38
48/* this is actually not only the c stack but also c registers etc... */ 39/* this is actually not only the c stack but also c registers etc... */
49typedef struct { 40typedef struct {
50 int refcnt; /* pointer reference counter */ 41 int refcnt; /* pointer reference counter */
51 int usecnt; /* shared by how many coroutines */ 42 int usecnt; /* shared by how many coroutines */
… …
96 I32 savestack_max; 87 I32 savestack_max;
97 OP **retstack; 88 OP **retstack;
98 I32 retstack_ix; 89 I32 retstack_ix;
99 I32 retstack_max; 90 I32 retstack_max;
100 COP *curcop; 91 COP *curcop;
92 PMOP *curpm;
101 JMPENV *top_env; 93 JMPENV *top_env;
102 94
103 /* data associated with this coroutine (initial args) */ 95 /* data associated with this coroutine (initial args) */
104 AV *args; 96 AV *args;
105}; 97};
… …
110static AV *main_mainstack; /* used to differentiate between $main and others */ 102static AV *main_mainstack; /* used to differentiate between $main and others */
111static HV *coro_state_stash; 103static HV *coro_state_stash;
112static SV *ucoro_state_sv; 104static SV *ucoro_state_sv;
113static U32 ucoro_state_hash; 105static U32 ucoro_state_hash;
114static HV *padlist_cache; 106static HV *padlist_cache;
115 107static SV *coro_mortal; /* will be freed after next transfer */
116/* for Coro.pm */
117static GV *coro_current, *coro_idle;
118static AV *coro_ready;
119 108
120/* mostly copied from op.c:cv_clone2 */ 109/* mostly copied from op.c:cv_clone2 */
121STATIC AV * 110STATIC AV *
122clone_padlist (AV *protopadlist) 111clone_padlist (AV *protopadlist)
123{ 112{
… …
210 199
211 return newpadlist; 200 return newpadlist;
212} 201}
213 202
214#ifdef MAY_FLUSH 203#ifdef MAY_FLUSH
215STATIC AV * 204STATIC void
216free_padlist (AV *padlist) 205free_padlist (AV *padlist)
217{ 206{
218 /* may be during global destruction */ 207 /* may be during global destruction */
219 if (SvREFCNT(padlist)) 208 if (SvREFCNT(padlist))
220 { 209 {
… …
285#endif 274#endif
286 275
287#define SB do { 276#define SB do {
288#define SE } while (0) 277#define SE } while (0)
289 278
290#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE 279#define LOAD(state) load_state(aTHX_ (state));
291#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE 280#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
292 281
293#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE 282#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE
294 283
295static void 284static void
296load_state(pTHX_ Coro__State c) 285load_state(pTHX_ Coro__State c)
… …
370 359
371 PUSHs (Nullsv); 360 PUSHs (Nullsv);
372 /* this loop was inspired by pp_caller */ 361 /* this loop was inspired by pp_caller */
373 for (;;) 362 for (;;)
374 { 363 {
375 do 364 while (cxix >= 0)
376 { 365 {
377 PERL_CONTEXT *cx = &ccstk[cxix--]; 366 PERL_CONTEXT *cx = &ccstk[cxix--];
378 367
379 if (CxTYPE(cx) == CXt_SUB) 368 if (CxTYPE(cx) == CXt_SUB)
380 { 369 {
… …
406 /* I never used formats, so how should I know how these are implemented? */ 395 /* I never used formats, so how should I know how these are implemented? */
407 /* my bold guess is as a simple, plain sub... */ 396 /* my bold guess is as a simple, plain sub... */
408 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); 397 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
409 } 398 }
410 } 399 }
411 while (cxix >= 0);
412 400
413 if (top_si->si_type == PERLSI_MAIN) 401 if (top_si->si_type == PERLSI_MAIN)
414 break; 402 break;
415 403
416 top_si = top_si->si_prev; 404 top_si = top_si->si_prev;
… …
422 } 410 }
423 411
424 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 412 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
425 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 413 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
426 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 414 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
427
428 /* I have not the slightest idea of why av_reify is necessary */
429 /* but if it's missing the defav contents magically get replaced sometimes */
430 if (c->defav)
431 av_reify (c->defav);
432 415
433 c->dowarn = PL_dowarn; 416 c->dowarn = PL_dowarn;
434 c->in_eval = PL_in_eval; 417 c->in_eval = PL_in_eval;
435 418
436 c->curstackinfo = PL_curstackinfo; 419 c->curstackinfo = PL_curstackinfo;
… …
508 * still there is a memleak of 128 bytes... 491 * still there is a memleak of 128 bytes...
509 */ 492 */
510STATIC void 493STATIC void
511destroy_stacks(pTHX) 494destroy_stacks(pTHX)
512{ 495{
496 if (!IN_DESTRUCT)
497 {
513 /* is this ugly, I ask? */ 498 /* is this ugly, I ask? */
514 while (PL_scopestack_ix) 499 while (PL_scopestack_ix)
515 LEAVE; 500 LEAVE;
516 501
517 /* sure it is, but more important: is it correct?? :/ */ 502 /* sure it is, but more important: is it correct?? :/ */
518 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ 503 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
519 FREETMPS; 504 FREETMPS;
505 }
520 506
521 while (PL_curstackinfo->si_next) 507 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 508 PL_curstackinfo = PL_curstackinfo->si_next;
523 509
524 while (PL_curstackinfo) 510 while (PL_curstackinfo)
… …
529 dSP; 515 dSP;
530 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 516 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
531 PUTBACK; /* possibly superfluous */ 517 PUTBACK; /* possibly superfluous */
532 } 518 }
533 519
520 if (!IN_DESTRUCT)
521 {
534 dounwind(-1); 522 dounwind(-1);
535
536 SvREFCNT_dec(PL_curstackinfo->si_stack); 523 SvREFCNT_dec(PL_curstackinfo->si_stack);
524 }
525
537 Safefree(PL_curstackinfo->si_cxstack); 526 Safefree(PL_curstackinfo->si_cxstack);
538 Safefree(PL_curstackinfo); 527 Safefree(PL_curstackinfo);
539 PL_curstackinfo = p; 528 PL_curstackinfo = p;
540 } 529 }
541 530
… …
556 stack->refcnt = 1; 545 stack->refcnt = 1;
557 stack->usecnt = 1; 546 stack->usecnt = 1;
558 stack->gencnt = ctx->gencnt = 0; 547 stack->gencnt = ctx->gencnt = 0;
559 if (alloc) 548 if (alloc)
560 { 549 {
561#ifdef HAVE_MMAP 550#if HAVE_MMAP
562 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ 551 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
563 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); 552 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
564 if (stack->sptr == (void *)-1) 553 if (stack->sptr == (void *)-1)
565#endif 554#endif
566 { 555 {
567 /*FIXME*//*D*//* reasonable stack size! */ 556 /*FIXME*//*D*//* reasonable stack size! */
568 stack->ssize = -4096 * sizeof (long); 557 stack->ssize = -4096 * sizeof (long);
… …
609 dSP; 598 dSP;
610 Coro__State ctx = (Coro__State)arg; 599 Coro__State ctx = (Coro__State)arg;
611 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 600 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE);
612 601
613 coro_init_stacks (aTHX); 602 coro_init_stacks (aTHX);
603 PL_curpm = 0; /* segfault on first access */
614 /*PL_curcop = 0;*/ 604 /*PL_curcop = 0;*/
615 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 605 /*PL_in_eval = PL_in_eval;*/ /* inherit */
616 SvREFCNT_dec (GvAV (PL_defgv)); 606 SvREFCNT_dec (GvAV (PL_defgv));
617 GvAV (PL_defgv) = ctx->args; 607 GvAV (PL_defgv) = ctx->args;
618 608
… …
663{ 653{
664 /* 654 /*
665 * this is a _very_ stripped down perl interpreter ;) 655 * this is a _very_ stripped down perl interpreter ;)
666 */ 656 */
667 Coro__State ctx = (Coro__State)arg; 657 Coro__State ctx = (Coro__State)arg;
658 JMPENV coro_start_env;
668 659
669 /*FIXME*//* must set up top_env here */ 660 /* same as JMPENV_BOOTSTRAP */
661 Zero(&coro_start_env, 1, JMPENV);
662 coro_start_env.je_ret = -1;
663 coro_start_env.je_mustcatch = TRUE;
664 PL_top_env = &coro_start_env;
665
670 ctx->cursp = 0; 666 ctx->cursp = 0;
671 PL_op = PL_op->op_next; 667 PL_op = PL_op->op_next;
672 CALLRUNOPS(aTHX); 668 CALLRUNOPS(aTHX);
673 669
674 abort (); 670 abort ();
675} 671}
676 672
677STATIC void 673STATIC void
678transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 674transfer(pTHX_ struct coro *prev, struct coro *next, int flags)
679{ 675{
680 dSP;
681 dSTACKLEVEL; 676 dSTACKLEVEL;
677 static struct coro *xnext;
682 678
683 if (prev != next) 679 if (prev != next)
684 { 680 {
681 xnext = next;
682
685 if (next->mainstack) 683 if (next->mainstack)
686 { 684 {
687 SAVE (prev, flags); 685 SAVE (prev, flags);
688 LOAD (next); 686 LOAD (next);
689 687
… …
712 continue_coro, (void *)next, 710 continue_coro, (void *)next,
713 next->stack->sptr, labs (next->stack->ssize)); 711 next->stack->sptr, labs (next->stack->ssize));
714 } 712 }
715 713
716 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 714 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715 /* don't add any code here */
717 } 716 }
718 717
719 } 718 }
720 else if (next->tmps_ix == -2) 719 else if (next->tmps_ix == -2)
721 croak ("tried to transfer to running coroutine"); 720 croak ("tried to transfer to running coroutine");
… …
742 allocate_stack (next, 1); 741 allocate_stack (next, 1);
743 coro_create (&(next->stack->cctx), 742 coro_create (&(next->stack->cctx),
744 setup_coro, (void *)next, 743 setup_coro, (void *)next,
745 next->stack->sptr, labs (next->stack->ssize)); 744 next->stack->sptr, labs (next->stack->ssize));
746 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 745 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
746 /* don't add any code here */
747 } 747 }
748 } 748 }
749 else 749 else
750 setup_coro (next); 750 setup_coro (next);
751 } 751 }
752 }
753 752
753 /*
754 * xnext is now either prev or next, depending on wether
755 * we switched the c stack or not. that's why i use a global
756 * variable, that should become thread-specific at one point.
757 */
754 next->cursp = stacklevel; 758 xnext->cursp = stacklevel;
755} 759 }
756 760
757static struct coro * 761 if (coro_mortal)
758sv_to_coro (SV *arg, const char *funcname, const char *varname)
759{
760 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
761 { 762 {
763 SvREFCNT_dec (coro_mortal);
764 coro_mortal = 0;
765 }
766}
767
768#define SV_CORO(sv,func) \
769 do { \
770 if (SvROK (sv)) \
771 sv = SvRV (sv); \
772 \
773 if (SvTYPE(sv) == SVt_PVHV) \
774 { \
762 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); 775 HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
763 776 \
764 if (!he) 777 if (!he) \
765 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); 778 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
766 779 \
767 arg = HeVAL(he); 780 (sv) = SvRV (HeVAL(he)); \
768 } 781 } \
769 782 \
770 /* must also be changed inside Coro::Cont::yield */ 783 /* must also be changed inside Coro::Cont::yield */ \
771 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 784 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
772 return (struct coro *) SvIV((SV*)SvRV(arg));
773 else
774 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 785 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
786 \
787 } while(0)
788
789#define SvSTATE(sv) (struct coro *)SvIV (sv)
790
791static void
792api_transfer(pTHX_ SV *prev, SV *next, int flags)
793{
794 SV_CORO (prev, "Coro::transfer");
795 SV_CORO (next, "Coro::transfer");
796
797 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
798}
799
800/** Coro ********************************************************************/
801
802#define PRIO_MAX 3
803#define PRIO_HIGH 1
804#define PRIO_NORMAL 0
805#define PRIO_LOW -1
806#define PRIO_IDLE -3
807#define PRIO_MIN -4
808
809/* for Coro.pm */
810static GV *coro_current, *coro_idle;
811static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
812static int coro_nready;
813
814static void
815coro_enq (SV *sv)
816{
817 if (SvTYPE (sv) == SVt_PVHV)
818 {
819 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
820 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
821
822 prio = prio > PRIO_MAX ? PRIO_MAX
823 : prio < PRIO_MIN ? PRIO_MIN
824 : prio;
825
826 av_push (coro_ready [prio - PRIO_MIN], sv);
827 coro_nready++;
828
829 return;
830 }
831
832 croak ("Coro::ready tried to enqueue something that is not a coroutine");
833}
834
835static SV *
836coro_deq (int min_prio)
837{
838 int prio = PRIO_MAX - PRIO_MIN;
839
840 min_prio -= PRIO_MIN;
841 if (min_prio < 0)
842 min_prio = 0;
843
844 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
845 if (av_len (coro_ready[prio]) >= 0)
846 {
847 coro_nready--;
848 return av_shift (coro_ready[prio]);
849 }
850
851 return 0;
852}
853
854static void
855api_ready (SV *coro)
856{
857 if (SvROK (coro))
858 coro = SvRV (coro);
859
860 coro_enq (SvREFCNT_inc (coro));
861}
862
863static void
864api_schedule (void)
865{
866 SV *prev, *next;
867
868 prev = SvRV (GvSV (coro_current));
869 next = coro_deq (PRIO_MIN);
870
871 if (!next)
872 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
873
874 /* free this only after the transfer */
875 coro_mortal = prev;
876 SV_CORO (prev, "Coro::schedule");
877
878 SvRV (GvSV (coro_current)) = next;
879
880 SV_CORO (next, "Coro::schedule");
881
882 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
883 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
884}
885
886static void
887api_cede (void)
888{
889 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
890
891 api_schedule ();
775} 892}
776 893
777MODULE = Coro::State PACKAGE = Coro::State 894MODULE = Coro::State PACKAGE = Coro::State
778 895
779PROTOTYPES: ENABLE 896PROTOTYPES: ENABLE
… …
785 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 902 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
786 903
787 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 904 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
788 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 905 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
789 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 906 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
907 newCONSTSUB (coro_state_stash, "SAVE_CURPM", newSViv (TRANSFER_SAVE_CURPM));
790 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 908 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
791 909
792 if (!padlist_cache) 910 if (!padlist_cache)
793 padlist_cache = newHV (); 911 padlist_cache = newHV ();
794 912
795 main_mainstack = PL_mainstack; 913 main_mainstack = PL_mainstack;
914
915 coroapi.ver = CORO_API_VERSION;
916 coroapi.transfer = api_transfer;
796} 917}
797 918
798Coro::State 919Coro::State
799_newprocess(args) 920_newprocess(args)
800 SV * args 921 SV * args
… …
815 OUTPUT: 936 OUTPUT:
816 RETVAL 937 RETVAL
817 938
818void 939void
819transfer(prev, next, flags) 940transfer(prev, next, flags)
820 Coro::State_or_hashref prev 941 SV *prev
821 Coro::State_or_hashref next 942 SV *next
822 int flags 943 int flags
823 PROTOTYPE: @ 944 PROTOTYPE: @
824 CODE: 945 CODE:
825 PUTBACK; 946 PUTBACK;
947 SV_CORO (next, "Coro::transfer");
948 SV_CORO (prev, "Coro::transfer");
826 transfer (aTHX_ prev, next, flags); 949 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
827 SPAGAIN; 950 SPAGAIN;
828 951
829void 952void
830DESTROY(coro) 953DESTROY(coro)
831 Coro::State coro 954 Coro::State coro
… …
833 956
834 if (coro->mainstack && coro->mainstack != main_mainstack) 957 if (coro->mainstack && coro->mainstack != main_mainstack)
835 { 958 {
836 struct coro temp; 959 struct coro temp;
837 960
961 PUTBACK;
838 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); 962 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
839 LOAD(aTHX_ coro); 963 LOAD(aTHX_ coro);
964 SPAGAIN;
840 965
841 destroy_stacks (aTHX); 966 destroy_stacks (aTHX);
842 967
843 LOAD((&temp)); /* this will get rid of defsv etc.. */ 968 LOAD((&temp)); /* this will get rid of defsv etc.. */
969 SPAGAIN;
844 970
845 coro->mainstack = 0; 971 coro->mainstack = 0;
846 } 972 }
847 973
848 deallocate_stack (coro); 974 deallocate_stack (coro);
… …
903 1029
904# this is slightly dirty (should expose a c-level api) 1030# this is slightly dirty (should expose a c-level api)
905 1031
906BOOT: 1032BOOT:
907{ 1033{
1034 int i;
1035 HV *stash = gv_stashpv ("Coro", TRUE);
1036
1037 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
1038 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1039 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1040 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
1041 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1042 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
1043
908 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); 1044 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
909 coro_ready = newAV ();
910 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); 1045 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1046
1047 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1048 coro_ready[i] = newAV ();
1049
1050 {
1051 SV *sv = perl_get_sv("Coro::API", 1);
1052
1053 coroapi.schedule = api_schedule;
1054 coroapi.cede = api_cede;
1055 coroapi.ready = api_ready;
1056 coroapi.nready = &coro_nready;
1057 coroapi.current = coro_current;
1058
1059 GCoroAPI = &coroapi;
1060 sv_setiv(sv, (IV)&coroapi);
1061 SvREADONLY_on(sv);
1062 }
911} 1063}
912 1064
913void 1065void
914ready(self) 1066ready(self)
915 SV * self 1067 SV * self
1068 PROTOTYPE: $
916 CODE: 1069 CODE:
917 av_push (coro_ready, SvREFCNT_inc (self)); 1070 api_ready (self);
1071
1072int
1073nready(...)
1074 PROTOTYPE:
1075 CODE:
1076 RETVAL = coro_nready;
1077 OUTPUT:
1078 RETVAL
918 1079
919void 1080void
920schedule(...) 1081schedule(...)
921 ALIAS: 1082 PROTOTYPE:
922 cede = 1
923 CODE: 1083 CODE:
924 SV *prev = GvSV (coro_current); 1084 api_schedule ();
925 SV *next = av_shift (coro_ready);
926 1085
927 if (next == &PL_sv_undef) 1086void
928 next = SvREFCNT_inc (GvSV (coro_idle)); 1087cede(...)
1088 PROTOTYPE:
1089 CODE:
1090 api_cede ();
929 1091
930 if (ix)
931 av_push (coro_ready, SvREFCNT_inc (prev));
932
933 GvSV (coro_current) = SvREFCNT_inc (next);
934 transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
935 sv_to_coro (next, "Coro::schedule", "next coroutine"),
936 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
937 SvREFCNT_dec (next);
938 SvREFCNT_dec (prev);
939

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