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Comparing Coro/Coro/State.xs (file contents):
Revision 1.22 by root, Sat Aug 11 23:10:56 2001 UTC vs.
Revision 1.26 by root, Fri Aug 17 01:45:39 2001 UTC

… …
18# endif 18# endif
19#endif 19#endif
20 20
21#define MAY_FLUSH /* increases codesize */ 21#define MAY_FLUSH /* increases codesize */
22 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
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 delcare 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
46#define labs(l) ((l) >= 0 ? (l) : -(l)) 31#define labs(l) ((l) >= 0 ? (l) : -(l))
32
33#include "CoroAPI.h"
34
35static struct CoroAPI coroapi;
47 36
48/* this is actually not only the c stack but also c registers etc... */ 37/* this is actually not only the c stack but also c registers etc... */
49typedef struct { 38typedef struct {
50 int refcnt; /* pointer reference counter */ 39 int refcnt; /* pointer reference counter */
51 int usecnt; /* shared by how many coroutines */ 40 int usecnt; /* shared by how many coroutines */
… …
525 dSP; 514 dSP;
526 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 515 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
527 PUTBACK; /* possibly superfluous */ 516 PUTBACK; /* possibly superfluous */
528 } 517 }
529 518
519 if (PL_main_cv != Nullcv) /* don't during destruction. hack? */
530 dounwind(-1); 520 dounwind(-1);
531 521
532 SvREFCNT_dec(PL_curstackinfo->si_stack); 522 SvREFCNT_dec(PL_curstackinfo->si_stack);
533 Safefree(PL_curstackinfo->si_cxstack); 523 Safefree(PL_curstackinfo->si_cxstack);
534 Safefree(PL_curstackinfo); 524 Safefree(PL_curstackinfo);
535 PL_curstackinfo = p; 525 PL_curstackinfo = p;
… …
751} 741}
752 742
753static struct coro * 743static struct coro *
754sv_to_coro (SV *arg, const char *funcname, const char *varname) 744sv_to_coro (SV *arg, const char *funcname, const char *varname)
755{ 745{
756 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) 746 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
757 { 747 {
758 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); 748 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);
759 749
760 if (!he) 750 if (!he)
761 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); 751 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
762 752
763 arg = HeVAL(he); 753 arg = HeVAL(he);
764 } 754 }
765 755
766 /* must also be changed inside Coro::Cont::yield */ 756 /* must also be changed inside Coro::Cont::yield */
767 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 757 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash)
768 return (struct coro *) SvIV((SV*)SvRV(arg)); 758 return (struct coro *) SvIV((SV*)SvRV(arg));
769 else 759 else
770 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 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);
771} 769}
772 770
773/** Coro ********************************************************************/ 771/** Coro ********************************************************************/
774 772
775#define PRIO_MAX 3 773#define PRIO_MAX 3
… …
780#define PRIO_MIN -4 778#define PRIO_MIN -4
781 779
782/* for Coro.pm */ 780/* for Coro.pm */
783static GV *coro_current, *coro_idle; 781static GV *coro_current, *coro_idle;
784static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; 782static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
783static int coro_nready;
785 784
786static void 785static void
787coro_enq (SV *sv) 786coro_enq (SV *sv)
788{ 787{
789 if (SvROK (sv)) 788 if (SvROK (sv))
… …
797 prio = prio > PRIO_MAX ? PRIO_MAX 796 prio = prio > PRIO_MAX ? PRIO_MAX
798 : prio < PRIO_MIN ? PRIO_MIN 797 : prio < PRIO_MIN ? PRIO_MIN
799 : prio; 798 : prio;
800 799
801 av_push (coro_ready [prio - PRIO_MIN], sv); 800 av_push (coro_ready [prio - PRIO_MIN], sv);
801 coro_nready++;
802 802
803 return; 803 return;
804 } 804 }
805 } 805 }
806 806
… …
816 if (min_prio < 0) 816 if (min_prio < 0)
817 min_prio = 0; 817 min_prio = 0;
818 818
819 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 819 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
820 if (av_len (coro_ready[prio]) >= 0) 820 if (av_len (coro_ready[prio]) >= 0)
821 {
822 coro_nready--;
821 return av_shift (coro_ready[prio]); 823 return av_shift (coro_ready[prio]);
824 }
822 825
823 return 0; 826 return 0;
827}
828
829static void
830api_ready (SV *coro)
831{
832 coro_enq (SvREFCNT_inc (coro));
833}
834
835static void
836api_schedule (int cede)
837{
838 SV *prev, *next;
839
840 prev = GvSV (coro_current);
841
842 if (cede)
843 coro_enq (SvREFCNT_inc (prev));
844
845 next = coro_deq (PRIO_MIN);
846
847 if (!next)
848 next = SvREFCNT_inc (GvSV (coro_idle));
849
850 GvSV (coro_current) = SvREFCNT_inc (next);
851 transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
852 sv_to_coro (next, "Coro::schedule", "next coroutine"),
853 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
854 SvREFCNT_dec (next);
855 SvREFCNT_dec (prev);
824} 856}
825 857
826MODULE = Coro::State PACKAGE = Coro::State 858MODULE = Coro::State PACKAGE = Coro::State
827 859
828PROTOTYPES: ENABLE 860PROTOTYPES: ENABLE
… …
840 872
841 if (!padlist_cache) 873 if (!padlist_cache)
842 padlist_cache = newHV (); 874 padlist_cache = newHV ();
843 875
844 main_mainstack = PL_mainstack; 876 main_mainstack = PL_mainstack;
877
878 coroapi.ver = CORO_API_VERSION;
879 coroapi.transfer = api_transfer;
845} 880}
846 881
847Coro::State 882Coro::State
848_newprocess(args) 883_newprocess(args)
849 SV * args 884 SV * args
… …
967 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); 1002 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
968 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); 1003 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
969 1004
970 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1005 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
971 coro_ready[i] = newAV (); 1006 coro_ready[i] = newAV ();
1007
1008 {
1009 SV *sv = perl_get_sv("Coro::API", 1);
1010
1011 coroapi.schedule = api_schedule;
1012 coroapi.ready = api_ready;
1013 coroapi.nready = &coro_nready;
1014 coroapi.current = coro_current;
1015
1016 GCoroAPI = &coroapi;
1017 sv_setiv(sv, (IV)&coroapi);
1018 SvREADONLY_on(sv);
1019 }
972} 1020}
973 1021
974void 1022void
975ready(self) 1023ready(self)
976 SV * self 1024 SV * self
977 CODE: 1025 CODE:
978 coro_enq (SvREFCNT_inc (self)); 1026 api_ready (self);
1027
1028int
1029nready(...)
1030 PROTOTYPE:
1031 CODE:
1032 RETVAL = coro_nready;
1033 OUTPUT:
1034 RETVAL
979 1035
980void 1036void
981schedule(...) 1037schedule(...)
1038 PROTOTYPE:
982 ALIAS: 1039 ALIAS:
983 cede = 1 1040 cede = 1
984 CODE: 1041 CODE:
985 SV *prev, *next; 1042 api_schedule (ix);
986 1043
987 prev = GvSV (coro_current);
988
989 if (ix)
990 coro_enq (SvREFCNT_inc (prev));
991
992 next = coro_deq (PRIO_MIN);
993
994 if (!next)
995 next = SvREFCNT_inc (GvSV (coro_idle));
996
997 GvSV (coro_current) = SvREFCNT_inc (next);
998 transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"),
999 sv_to_coro (next, "Coro::schedule", "next coroutine"),
1000 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
1001 SvREFCNT_dec (next);
1002 SvREFCNT_dec (prev);
1003

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