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Comparing Coro/Coro/State.xs (file contents):
Revision 1.19 by root, Sun Jul 29 01:11:41 2001 UTC vs.
Revision 1.39 by root, Sun Nov 25 20:04:05 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>
10# ifndef MAP_ANON
11# ifdef MAP_ANONYMOUS 12# ifndef MAP_ANONYMOUS
12# define MAP_ANON MAP_ANONYMOUS 13# ifdef MAP_ANON
14# define MAP_ANONYMOUS MAP_ANON
13# else 15# else
14# undef HAVE_MMAP 16# undef HAVE_MMAP
15# endif 17# endif
16# endif 18# endif
17#endif 19#endif
18 20
19#define MAY_FLUSH /* increases codesize */ 21#define MAY_FLUSH /* increases codesize and is rarely used */
20
21/* perl-related */
22#define TRANSFER_SAVE_DEFAV 0x00000001
23#define TRANSFER_SAVE_DEFSV 0x00000002
24#define TRANSFER_SAVE_ERRSV 0x00000004
25/* c-related */
26#define TRANSFER_SAVE_CCTXT 0x00000008
27#ifdef CORO_LAZY_STACK
28# define TRANSFER_LAZY_STACK 0x00000010
29#else
30# define TRANSFER_LAZY_STACK 0x00000000
31#endif
32
33#define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \
34 |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT)
35 22
36#define SUB_INIT "Coro::State::initialize" 23#define SUB_INIT "Coro::State::initialize"
37#define UCORO_STATE "_coro_state" 24#define UCORO_STATE "_coro_state"
38 25
39/* 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
40 * 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
41 * and should be unique. */ 28 * and should be unique. */
42#define dSTACKLEVEL void *stacklevel = &stacklevel 29#define dSTACKLEVEL void *stacklevel = &stacklevel
43 30
31#define IN_DESTRUCT (PL_main_cv == Nullcv)
32
44#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;
45 38
46/* 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... */
47typedef struct { 40typedef struct {
48 int refcnt; /* pointer reference counter */ 41 int refcnt; /* pointer reference counter */
49 int usecnt; /* shared by how many coroutines */ 42 int usecnt; /* shared by how many coroutines */
… …
63 56
64 /* optionally saved, might be zero */ 57 /* optionally saved, might be zero */
65 AV *defav; 58 AV *defav;
66 SV *defsv; 59 SV *defsv;
67 SV *errsv; 60 SV *errsv;
61 /* TODO: PL_pmop might be nice && effortless to save. */
68 62
69 /* saved global state not related to stacks */ 63 /* saved global state not related to stacks */
70 U8 dowarn; 64 U8 dowarn;
71 I32 in_eval; 65 I32 in_eval;
72 66
… …
108static AV *main_mainstack; /* used to differentiate between $main and others */ 102static AV *main_mainstack; /* used to differentiate between $main and others */
109static HV *coro_state_stash; 103static HV *coro_state_stash;
110static SV *ucoro_state_sv; 104static SV *ucoro_state_sv;
111static U32 ucoro_state_hash; 105static U32 ucoro_state_hash;
112static HV *padlist_cache; 106static HV *padlist_cache;
107static SV *coro_mortal; /* will be freed after next transfer */
113 108
114/* mostly copied from op.c:cv_clone2 */ 109/* mostly copied from op.c:cv_clone2 */
115STATIC AV * 110STATIC AV *
116clone_padlist (AV *protopadlist) 111clone_padlist (AV *protopadlist)
117{ 112{
… …
204 199
205 return newpadlist; 200 return newpadlist;
206} 201}
207 202
208#ifdef MAY_FLUSH 203#ifdef MAY_FLUSH
209STATIC AV * 204STATIC void
210free_padlist (AV *padlist) 205free_padlist (AV *padlist)
211{ 206{
212 /* may be during global destruction */ 207 /* may be during global destruction */
213 if (SvREFCNT(padlist)) 208 if (SvREFCNT(padlist))
214 { 209 {
… …
279#endif 274#endif
280 275
281#define SB do { 276#define SB do {
282#define SE } while (0) 277#define SE } while (0)
283 278
284#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE 279#define LOAD(state) load_state(aTHX_ (state));
285#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE 280#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
286 281
287#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
288 283
289static void 284static void
290load_state(pTHX_ Coro__State c) 285load_state(pTHX_ Coro__State c)
… …
364 359
365 PUSHs (Nullsv); 360 PUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 361 /* this loop was inspired by pp_caller */
367 for (;;) 362 for (;;)
368 { 363 {
369 do 364 while (cxix >= 0)
370 { 365 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 366 PERL_CONTEXT *cx = &ccstk[cxix--];
372 367
373 if (CxTYPE(cx) == CXt_SUB) 368 if (CxTYPE(cx) == CXt_SUB)
374 { 369 {
… …
400 /* 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? */
401 /* my bold guess is as a simple, plain sub... */ 396 /* my bold guess is as a simple, plain sub... */
402 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");
403 } 398 }
404 } 399 }
405 while (cxix >= 0);
406 400
407 if (top_si->si_type == PERLSI_MAIN) 401 if (top_si->si_type == PERLSI_MAIN)
408 break; 402 break;
409 403
410 top_si = top_si->si_prev; 404 top_si = top_si->si_prev;
… …
416 } 410 }
417 411
418 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;
419 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 413 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
420 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 414 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
421
422 /* I have not the slightest idea of why av_reify is necessary */
423 /* but if it's missing the defav contents magically get replaced sometimes */
424 if (c->defav)
425 av_reify (c->defav);
426 415
427 c->dowarn = PL_dowarn; 416 c->dowarn = PL_dowarn;
428 c->in_eval = PL_in_eval; 417 c->in_eval = PL_in_eval;
429 418
430 c->curstackinfo = PL_curstackinfo; 419 c->curstackinfo = PL_curstackinfo;
… …
502 * still there is a memleak of 128 bytes... 491 * still there is a memleak of 128 bytes...
503 */ 492 */
504STATIC void 493STATIC void
505destroy_stacks(pTHX) 494destroy_stacks(pTHX)
506{ 495{
496 if (!IN_DESTRUCT)
497 {
507 /* is this ugly, I ask? */ 498 /* is this ugly, I ask? */
508 while (PL_scopestack_ix) 499 while (PL_scopestack_ix)
509 LEAVE; 500 LEAVE;
510 501
511 /* sure it is, but more important: is it correct?? :/ */ 502 /* sure it is, but more important: is it correct?? :/ */
512 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 */
513 FREETMPS; 504 FREETMPS;
505 }
514 506
515 while (PL_curstackinfo->si_next) 507 while (PL_curstackinfo->si_next)
516 PL_curstackinfo = PL_curstackinfo->si_next; 508 PL_curstackinfo = PL_curstackinfo->si_next;
517 509
518 while (PL_curstackinfo) 510 while (PL_curstackinfo)
… …
523 dSP; 515 dSP;
524 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 516 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
525 PUTBACK; /* possibly superfluous */ 517 PUTBACK; /* possibly superfluous */
526 } 518 }
527 519
520 if (!IN_DESTRUCT)
521 {
528 dounwind(-1); 522 dounwind(-1);
529
530 SvREFCNT_dec(PL_curstackinfo->si_stack); 523 SvREFCNT_dec(PL_curstackinfo->si_stack);
524 }
525
531 Safefree(PL_curstackinfo->si_cxstack); 526 Safefree(PL_curstackinfo->si_cxstack);
532 Safefree(PL_curstackinfo); 527 Safefree(PL_curstackinfo);
533 PL_curstackinfo = p; 528 PL_curstackinfo = p;
534 } 529 }
535 530
… …
550 stack->refcnt = 1; 545 stack->refcnt = 1;
551 stack->usecnt = 1; 546 stack->usecnt = 1;
552 stack->gencnt = ctx->gencnt = 0; 547 stack->gencnt = ctx->gencnt = 0;
553 if (alloc) 548 if (alloc)
554 { 549 {
555#ifdef HAVE_MMAP 550#if HAVE_MMAP
556 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 */
557 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);
558 if (stack->sptr == (void *)-1) 553 if (stack->sptr == (void *)-1)
559#endif 554#endif
560 { 555 {
561 /*FIXME*//*D*//* reasonable stack size! */ 556 /*FIXME*//*D*//* reasonable stack size! */
562 stack->ssize = -4096 * sizeof (long); 557 stack->ssize = -4096 * sizeof (long);
… …
657{ 652{
658 /* 653 /*
659 * this is a _very_ stripped down perl interpreter ;) 654 * this is a _very_ stripped down perl interpreter ;)
660 */ 655 */
661 Coro__State ctx = (Coro__State)arg; 656 Coro__State ctx = (Coro__State)arg;
657 JMPENV coro_start_env;
662 658
663 /*FIXME*//* must set up top_env here */ 659 /* same as JMPENV_BOOTSTRAP */
660 Zero(&coro_start_env, 1, JMPENV);
661 coro_start_env.je_ret = -1;
662 coro_start_env.je_mustcatch = TRUE;
663 PL_top_env = &coro_start_env;
664
664 ctx->cursp = 0; 665 ctx->cursp = 0;
665 PL_op = PL_op->op_next; 666 PL_op = PL_op->op_next;
666 CALLRUNOPS(aTHX); 667 CALLRUNOPS(aTHX);
667 668
668 abort (); 669 abort ();
669} 670}
670 671
671STATIC void 672STATIC void
672transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 673transfer(pTHX_ struct coro *prev, struct coro *next, int flags)
673{ 674{
674 dSP;
675 dSTACKLEVEL; 675 dSTACKLEVEL;
676 static struct coro *xnext;
676 677
677 if (prev != next) 678 if (prev != next)
678 { 679 {
680 xnext = next;
681
679 if (next->mainstack) 682 if (next->mainstack)
680 { 683 {
681 SAVE (prev, flags); 684 SAVE (prev, flags);
682 LOAD (next); 685 LOAD (next);
683 686
… …
706 continue_coro, (void *)next, 709 continue_coro, (void *)next,
707 next->stack->sptr, labs (next->stack->ssize)); 710 next->stack->sptr, labs (next->stack->ssize));
708 } 711 }
709 712
710 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 713 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
714 /* don't add any code here */
711 } 715 }
712 716
713 } 717 }
714 else if (next->tmps_ix == -2) 718 else if (next->tmps_ix == -2)
715 croak ("tried to transfer to running coroutine"); 719 croak ("tried to transfer to running coroutine");
… …
736 allocate_stack (next, 1); 740 allocate_stack (next, 1);
737 coro_create (&(next->stack->cctx), 741 coro_create (&(next->stack->cctx),
738 setup_coro, (void *)next, 742 setup_coro, (void *)next,
739 next->stack->sptr, labs (next->stack->ssize)); 743 next->stack->sptr, labs (next->stack->ssize));
740 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 744 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
745 /* don't add any code here */
741 } 746 }
742 } 747 }
743 else 748 else
744 setup_coro (next); 749 setup_coro (next);
745 } 750 }
746 }
747 751
752 /*
753 * xnext is now either prev or next, depending on wether
754 * we switched the c stack or not. that's why i use a global
755 * variable, that should become thread-specific at one point.
756 */
748 next->cursp = stacklevel; 757 xnext->cursp = stacklevel;
758 }
759
760 if (coro_mortal)
761 {
762 SvREFCNT_dec (coro_mortal);
763 coro_mortal = 0;
764 }
765}
766
767#define SV_CORO(sv,func) \
768 do { \
769 if (SvROK (sv)) \
770 sv = SvRV (sv); \
771 \
772 if (SvTYPE(sv) == SVt_PVHV) \
773 { \
774 HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
775 \
776 if (!he) \
777 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
778 \
779 (sv) = SvRV (HeVAL(he)); \
780 } \
781 \
782 /* must also be changed inside Coro::Cont::yield */ \
783 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
784 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
785 \
786 } while(0)
787
788#define SvSTATE(sv) (struct coro *)SvIV (sv)
789
790static void
791api_transfer(pTHX_ SV *prev, SV *next, int flags)
792{
793 SV_CORO (prev, "Coro::transfer");
794 SV_CORO (next, "Coro::transfer");
795
796 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
797}
798
799/** Coro ********************************************************************/
800
801#define PRIO_MAX 3
802#define PRIO_HIGH 1
803#define PRIO_NORMAL 0
804#define PRIO_LOW -1
805#define PRIO_IDLE -3
806#define PRIO_MIN -4
807
808/* for Coro.pm */
809static GV *coro_current, *coro_idle;
810static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
811static int coro_nready;
812
813static void
814coro_enq (SV *sv)
815{
816 if (SvTYPE (sv) == SVt_PVHV)
817 {
818 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
819 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
820
821 prio = prio > PRIO_MAX ? PRIO_MAX
822 : prio < PRIO_MIN ? PRIO_MIN
823 : prio;
824
825 av_push (coro_ready [prio - PRIO_MIN], sv);
826 coro_nready++;
827
828 return;
829 }
830
831 croak ("Coro::ready tried to enqueue something that is not a coroutine");
832}
833
834static SV *
835coro_deq (int min_prio)
836{
837 int prio = PRIO_MAX - PRIO_MIN;
838
839 min_prio -= PRIO_MIN;
840 if (min_prio < 0)
841 min_prio = 0;
842
843 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
844 if (av_len (coro_ready[prio]) >= 0)
845 {
846 coro_nready--;
847 return av_shift (coro_ready[prio]);
848 }
849
850 return 0;
851}
852
853static void
854api_ready (SV *coro)
855{
856 if (SvROK (coro))
857 coro = SvRV (coro);
858
859 coro_enq (SvREFCNT_inc (coro));
860}
861
862static void
863api_schedule (void)
864{
865 SV *prev, *next;
866
867 prev = SvRV (GvSV (coro_current));
868 next = coro_deq (PRIO_MIN);
869
870 if (!next)
871 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
872
873 coro_mortal = prev;
874 SV_CORO (prev, "Coro::schedule");
875
876 SvRV (GvSV (coro_current)) = next;
877
878 SV_CORO (next, "Coro::schedule");
879
880 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
881 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
882}
883
884static void
885api_cede (void)
886{
887 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
888
889 api_schedule ();
749} 890}
750 891
751MODULE = Coro::State PACKAGE = Coro::State 892MODULE = Coro::State PACKAGE = Coro::State
752 893
753PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
… …
765 906
766 if (!padlist_cache) 907 if (!padlist_cache)
767 padlist_cache = newHV (); 908 padlist_cache = newHV ();
768 909
769 main_mainstack = PL_mainstack; 910 main_mainstack = PL_mainstack;
911
912 coroapi.ver = CORO_API_VERSION;
913 coroapi.transfer = api_transfer;
770} 914}
771 915
772Coro::State 916Coro::State
773_newprocess(args) 917_newprocess(args)
774 SV * args 918 SV * args
… …
788 RETVAL = coro; 932 RETVAL = coro;
789 OUTPUT: 933 OUTPUT:
790 RETVAL 934 RETVAL
791 935
792void 936void
793transfer(prev, next, flags = TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK) 937transfer(prev, next, flags)
794 Coro::State_or_hashref prev 938 SV *prev
795 Coro::State_or_hashref next 939 SV *next
796 int flags 940 int flags
797 PROTOTYPE: @ 941 PROTOTYPE: @
798 CODE: 942 CODE:
943 PUTBACK;
944 SV_CORO (next, "Coro::transfer");
945 SV_CORO (prev, "Coro::transfer");
799 transfer (aTHX_ prev, next, flags); 946 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
947 SPAGAIN;
800 948
801void 949void
802DESTROY(coro) 950DESTROY(coro)
803 Coro::State coro 951 Coro::State coro
804 CODE: 952 CODE:
805 953
806 if (coro->mainstack && coro->mainstack != main_mainstack) 954 if (coro->mainstack && coro->mainstack != main_mainstack)
807 { 955 {
808 struct coro temp; 956 struct coro temp;
809 957
958 PUTBACK;
810 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); 959 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
811 LOAD(aTHX_ coro); 960 LOAD(aTHX_ coro);
961 SPAGAIN;
812 962
813 destroy_stacks (aTHX); 963 destroy_stacks (aTHX);
814 964
815 LOAD((&temp)); /* this will get rid of defsv etc.. */ 965 LOAD((&temp)); /* this will get rid of defsv etc.. */
966 SPAGAIN;
816 967
817 coro->mainstack = 0; 968 coro->mainstack = 0;
818 } 969 }
819 970
820 deallocate_stack (coro); 971 deallocate_stack (coro);
… …
826 CODE: 977 CODE:
827#ifdef MAY_FLUSH 978#ifdef MAY_FLUSH
828 flush_padlist_cache (); 979 flush_padlist_cache ();
829#endif 980#endif
830 981
982void
983_exit(code)
984 int code
985 PROTOTYPE: $
986 CODE:
987#if defined(__GLIBC__) || _POSIX_C_SOURCE
988 _exit (code);
989#else
990 signal (SIGTERM, SIG_DFL);
991 raise (SIGTERM);
992 exit (code);
993#endif
994
831MODULE = Coro::State PACKAGE = Coro::Cont 995MODULE = Coro::State PACKAGE = Coro::Cont
832 996
833# this is slightly dirty 997# this is slightly dirty (should expose a c-level api)
834 998
835void 999void
836yield(...) 1000yield(...)
837 PROTOTYPE: @ 1001 PROTOTYPE: @
838 CODE: 1002 CODE:
… …
856 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 1020 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
857 SvREFCNT_dec (sv); 1021 SvREFCNT_dec (sv);
858 1022
859 transfer(aTHX_ prev, next, 0); 1023 transfer(aTHX_ prev, next, 0);
860 1024
1025MODULE = Coro::State PACKAGE = Coro
1026
1027# this is slightly dirty (should expose a c-level api)
1028
1029BOOT:
1030{
1031 int i;
1032 HV *stash = gv_stashpv ("Coro", TRUE);
1033
1034 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));
1035 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1036 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1037 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));
1038 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1039 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));
1040
1041 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1042 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1043
1044 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1045 coro_ready[i] = newAV ();
1046
1047 {
1048 SV *sv = perl_get_sv("Coro::API", 1);
1049
1050 coroapi.schedule = api_schedule;
1051 coroapi.cede = api_cede;
1052 coroapi.ready = api_ready;
1053 coroapi.nready = &coro_nready;
1054 coroapi.current = coro_current;
1055
1056 GCoroAPI = &coroapi;
1057 sv_setiv(sv, (IV)&coroapi);
1058 SvREADONLY_on(sv);
1059 }
1060}
1061
1062void
1063ready(self)
1064 SV * self
1065 PROTOTYPE: $
1066 CODE:
1067 api_ready (self);
1068
1069int
1070nready(...)
1071 PROTOTYPE:
1072 CODE:
1073 RETVAL = coro_nready;
1074 OUTPUT:
1075 RETVAL
1076
1077void
1078schedule(...)
1079 PROTOTYPE:
1080 CODE:
1081 api_schedule ();
1082
1083void
1084cede(...)
1085 PROTOTYPE:
1086 CODE:
1087 api_cede ();
1088

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