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Comparing Coro/Coro/State.xs (file contents):
Revision 1.37 by root, Tue Oct 9 00:39:11 2001 UTC vs.
Revision 1.40 by root, Tue Nov 27 01:41:41 2001 UTC

… …
87 I32 savestack_max; 87 I32 savestack_max;
88 OP **retstack; 88 OP **retstack;
89 I32 retstack_ix; 89 I32 retstack_ix;
90 I32 retstack_max; 90 I32 retstack_max;
91 COP *curcop; 91 COP *curcop;
92 PMOP *curpm;
92 JMPENV *top_env; 93 JMPENV *top_env;
93 94
94 /* data associated with this coroutine (initial args) */ 95 /* data associated with this coroutine (initial args) */
95 AV *args; 96 AV *args;
96}; 97};
… …
101static AV *main_mainstack; /* used to differentiate between $main and others */ 102static AV *main_mainstack; /* used to differentiate between $main and others */
102static HV *coro_state_stash; 103static HV *coro_state_stash;
103static SV *ucoro_state_sv; 104static SV *ucoro_state_sv;
104static U32 ucoro_state_hash; 105static U32 ucoro_state_hash;
105static HV *padlist_cache; 106static HV *padlist_cache;
107static SV *coro_mortal; /* will be freed after next transfer */
106 108
107/* mostly copied from op.c:cv_clone2 */ 109/* mostly copied from op.c:cv_clone2 */
108STATIC AV * 110STATIC AV *
109clone_padlist (AV *protopadlist) 111clone_padlist (AV *protopadlist)
110{ 112{
… …
596 dSP; 598 dSP;
597 Coro__State ctx = (Coro__State)arg; 599 Coro__State ctx = (Coro__State)arg;
598 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 600 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE);
599 601
600 coro_init_stacks (aTHX); 602 coro_init_stacks (aTHX);
603 PL_curpm = 0; /* segfault on first access */
601 /*PL_curcop = 0;*/ 604 /*PL_curcop = 0;*/
602 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 605 /*PL_in_eval = PL_in_eval;*/ /* inherit */
603 SvREFCNT_dec (GvAV (PL_defgv)); 606 SvREFCNT_dec (GvAV (PL_defgv));
604 GvAV (PL_defgv) = ctx->args; 607 GvAV (PL_defgv) = ctx->args;
605 608
… …
752 * we switched the c stack or not. that's why i use a global 755 * we switched the c stack or not. that's why i use a global
753 * variable, that should become thread-specific at one point. 756 * variable, that should become thread-specific at one point.
754 */ 757 */
755 xnext->cursp = stacklevel; 758 xnext->cursp = stacklevel;
756 } 759 }
757}
758 760
759static struct coro * 761 if (coro_mortal)
760sv_to_coro (SV *arg, const char *funcname, const char *varname) 762 {
761{ 763 SvREFCNT_dec (coro_mortal);
762 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) 764 coro_mortal = 0;
763 { 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 { \
764 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); \
765 776 \
766 if (!he) 777 if (!he) \
767 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); \
768 779 \
769 arg = HeVAL(he); 780 (sv) = SvRV (HeVAL(he)); \
770 } 781 } \
771 782 \
772 /* must also be changed inside Coro::Cont::yield */ 783 /* must also be changed inside Coro::Cont::yield */ \
773 if (SvROK(arg) && SvOBJECT(SvRV(arg)) 784 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
774 && SvSTASH(SvRV(arg)) == coro_state_stash)
775 return (struct coro *) SvIV((SV*)SvRV(arg));
776
777 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); \
778 /*NORETURN*/ 786 \
779} 787 } while(0)
788
789#define SvSTATE(sv) (struct coro *)SvIV (sv)
780 790
781static void 791static void
782api_transfer(pTHX_ SV *prev, SV *next, int flags) 792api_transfer(pTHX_ SV *prev, SV *next, int flags)
783{ 793{
784 transfer(aTHX_ 794 SV_CORO (prev, "Coro::transfer");
785 sv_to_coro (prev, "Coro::transfer", "prev"), 795 SV_CORO (next, "Coro::transfer");
786 sv_to_coro (next, "Coro::transfer", "next"), 796
787 flags); 797 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
788} 798}
789 799
790/** Coro ********************************************************************/ 800/** Coro ********************************************************************/
791 801
792#define PRIO_MAX 3 802#define PRIO_MAX 3
… …
802static int coro_nready; 812static int coro_nready;
803 813
804static void 814static void
805coro_enq (SV *sv) 815coro_enq (SV *sv)
806{ 816{
807 if (SvROK (sv))
808 {
809 SV *hv = SvRV (sv);
810 if (SvTYPE (hv) == SVt_PVHV) 817 if (SvTYPE (sv) == SVt_PVHV)
811 { 818 {
812 SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); 819 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
813 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 820 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
814 821
815 prio = prio > PRIO_MAX ? PRIO_MAX 822 prio = prio > PRIO_MAX ? PRIO_MAX
816 : prio < PRIO_MIN ? PRIO_MIN 823 : prio < PRIO_MIN ? PRIO_MIN
817 : prio; 824 : prio;
818 825
819 av_push (coro_ready [prio - PRIO_MIN], sv); 826 av_push (coro_ready [prio - PRIO_MIN], sv);
820 coro_nready++; 827 coro_nready++;
821 828
822 return; 829 return;
823 }
824 } 830 }
825 831
826 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 832 croak ("Coro::ready tried to enqueue something that is not a coroutine");
827} 833}
828 834
… …
846} 852}
847 853
848static void 854static void
849api_ready (SV *coro) 855api_ready (SV *coro)
850{ 856{
857 if (SvROK (coro))
858 coro = SvRV (coro);
859
851 coro_enq (SvREFCNT_inc (coro)); 860 coro_enq (SvREFCNT_inc (coro));
852} 861}
853 862
854static void 863static void
855api_schedule (int cede) 864api_schedule (void)
856{ 865{
857 SV *prev, *next; 866 SV *prev, *next;
858 867
859 prev = GvSV (coro_current); 868 prev = SvRV (GvSV (coro_current));
860
861 if (cede)
862 coro_enq (SvREFCNT_inc (prev));
863
864 next = coro_deq (PRIO_MIN); 869 next = coro_deq (PRIO_MIN);
865 870
866 if (!next) 871 if (!next)
867 next = SvREFCNT_inc (GvSV (coro_idle)); 872 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
868 873
869 GvSV (coro_current) = SvREFCNT_inc (next); 874 /* free this only after the transfer */
870 transfer (aTHX_ 875 coro_mortal = prev;
871 sv_to_coro (prev, "Coro::schedule", "current coroutine"), 876 SV_CORO (prev, "Coro::schedule");
872 sv_to_coro (next, "Coro::schedule", "next coroutine"), 877
878 SvRV (GvSV (coro_current)) = next;
879
880 SV_CORO (next, "Coro::schedule");
881
882 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
873 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 883 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
874 SvREFCNT_dec (next); 884}
875 SvREFCNT_dec (prev); 885
886static void
887api_cede (void)
888{
889 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
890
891 api_schedule ();
876} 892}
877 893
878MODULE = Coro::State PACKAGE = Coro::State 894MODULE = Coro::State PACKAGE = Coro::State
879 895
880PROTOTYPES: ENABLE 896PROTOTYPES: ENABLE
… …
886 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 902 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
887 903
888 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 904 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
889 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 905 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
890 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));
891 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 908 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
892 909
893 if (!padlist_cache) 910 if (!padlist_cache)
894 padlist_cache = newHV (); 911 padlist_cache = newHV ();
895 912
… …
919 OUTPUT: 936 OUTPUT:
920 RETVAL 937 RETVAL
921 938
922void 939void
923transfer(prev, next, flags) 940transfer(prev, next, flags)
924 Coro::State_or_hashref prev 941 SV *prev
925 Coro::State_or_hashref next 942 SV *next
926 int flags 943 int flags
927 PROTOTYPE: @ 944 PROTOTYPE: @
928 CODE: 945 CODE:
929 PUTBACK; 946 PUTBACK;
947 SV_CORO (next, "Coro::transfer");
948 SV_CORO (prev, "Coro::transfer");
930 transfer (aTHX_ prev, next, flags); 949 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
931 SPAGAIN; 950 SPAGAIN;
932 951
933void 952void
934DESTROY(coro) 953DESTROY(coro)
935 Coro::State coro 954 Coro::State coro
… …
1030 1049
1031 { 1050 {
1032 SV *sv = perl_get_sv("Coro::API", 1); 1051 SV *sv = perl_get_sv("Coro::API", 1);
1033 1052
1034 coroapi.schedule = api_schedule; 1053 coroapi.schedule = api_schedule;
1054 coroapi.cede = api_cede;
1035 coroapi.ready = api_ready; 1055 coroapi.ready = api_ready;
1036 coroapi.nready = &coro_nready; 1056 coroapi.nready = &coro_nready;
1037 coroapi.current = coro_current; 1057 coroapi.current = coro_current;
1038 1058
1039 GCoroAPI = &coroapi; 1059 GCoroAPI = &coroapi;
… …
1058 RETVAL 1078 RETVAL
1059 1079
1060void 1080void
1061schedule(...) 1081schedule(...)
1062 PROTOTYPE: 1082 PROTOTYPE:
1063 ALIAS:
1064 cede = 1
1065 CODE: 1083 CODE:
1066 api_schedule (ix); 1084 api_schedule ();
1067 1085
1086void
1087cede(...)
1088 PROTOTYPE:
1089 CODE:
1090 api_cede ();
1091

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