… | |
… | |
186 | }; |
186 | }; |
187 | |
187 | |
188 | typedef struct coro *Coro__State; |
188 | typedef struct coro *Coro__State; |
189 | typedef struct coro *Coro__State_or_hashref; |
189 | typedef struct coro *Coro__State_or_hashref; |
190 | |
190 | |
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|
191 | /** Coro ********************************************************************/ |
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|
192 | |
|
|
193 | #define PRIO_MAX 3 |
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|
194 | #define PRIO_HIGH 1 |
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|
195 | #define PRIO_NORMAL 0 |
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|
196 | #define PRIO_LOW -1 |
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|
197 | #define PRIO_IDLE -3 |
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|
198 | #define PRIO_MIN -4 |
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|
199 | |
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|
200 | /* for Coro.pm */ |
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|
201 | static SV *coro_current; |
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|
202 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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|
203 | static int coro_nready; |
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|
204 | |
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|
205 | /** lowlevel stuff **********************************************************/ |
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|
206 | |
191 | static AV * |
207 | static AV * |
192 | coro_clone_padlist (CV *cv) |
208 | coro_clone_padlist (CV *cv) |
193 | { |
209 | { |
194 | AV *padlist = CvPADLIST (cv); |
210 | AV *padlist = CvPADLIST (cv); |
195 | AV *newpadlist, *newpad; |
211 | AV *newpadlist, *newpad; |
… | |
… | |
303 | av_extend (av, AvMAX (av) + 1); |
319 | av_extend (av, AvMAX (av) + 1); |
304 | |
320 | |
305 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
321 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
306 | } |
322 | } |
307 | |
323 | |
|
|
324 | /** load & save, init *******************************************************/ |
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|
325 | |
308 | #define SB do { |
326 | #define SB do { |
309 | #define SE } while (0) |
327 | #define SE } while (0) |
310 | |
328 | |
311 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
329 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
312 | |
330 | |
… | |
… | |
504 | #if !PERL_VERSION_ATLEAST (5,9,0) |
522 | #if !PERL_VERSION_ATLEAST (5,9,0) |
505 | Safefree (PL_retstack); |
523 | Safefree (PL_retstack); |
506 | #endif |
524 | #endif |
507 | } |
525 | } |
508 | |
526 | |
|
|
527 | /** coroutine stack handling ************************************************/ |
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|
528 | |
509 | static void |
529 | static void |
510 | setup_coro (struct coro *coro) |
530 | setup_coro (struct coro *coro) |
511 | { |
531 | { |
512 | /* |
532 | /* |
513 | * emulate part of the perl startup here. |
533 | * emulate part of the perl startup here. |
… | |
… | |
704 | |
724 | |
705 | ++cctx_idle; |
725 | ++cctx_idle; |
706 | cctx->next = cctx_first; |
726 | cctx->next = cctx_first; |
707 | cctx_first = cctx; |
727 | cctx_first = cctx; |
708 | } |
728 | } |
|
|
729 | |
|
|
730 | /** coroutine switching *****************************************************/ |
709 | |
731 | |
710 | /* never call directly, always through the coro_state_transfer global variable */ |
732 | /* never call directly, always through the coro_state_transfer global variable */ |
711 | static void NOINLINE |
733 | static void NOINLINE |
712 | transfer (struct coro *prev, struct coro *next) |
734 | transfer (struct coro *prev, struct coro *next) |
713 | { |
735 | { |
… | |
… | |
803 | struct coro *prev, *next; |
825 | struct coro *prev, *next; |
804 | }; |
826 | }; |
805 | |
827 | |
806 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
828 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
807 | |
829 | |
|
|
830 | /** high level stuff ********************************************************/ |
|
|
831 | |
808 | static int |
832 | static int |
809 | coro_state_destroy (struct coro *coro) |
833 | coro_state_destroy (struct coro *coro) |
810 | { |
834 | { |
811 | if (coro->flags & CF_DESTROYED) |
835 | if (coro->flags & CF_DESTROYED) |
812 | return 0; |
836 | return 0; |
813 | |
837 | |
814 | coro->flags |= CF_DESTROYED; |
838 | coro->flags |= CF_DESTROYED; |
|
|
839 | |
|
|
840 | if (coro->flags & CF_READY) |
|
|
841 | { |
|
|
842 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
843 | /* alternative: look through all ready queues and remove it */ |
|
|
844 | LOCK; |
|
|
845 | --coro_nready; |
|
|
846 | UNLOCK; |
|
|
847 | } |
|
|
848 | else |
|
|
849 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
815 | |
850 | |
816 | if (coro->mainstack && coro->mainstack != main_mainstack) |
851 | if (coro->mainstack && coro->mainstack != main_mainstack) |
817 | { |
852 | { |
818 | assert (!(coro->flags & CF_RUNNING)); |
853 | assert (!(coro->flags & CF_RUNNING)); |
819 | |
854 | |
… | |
… | |
926 | return old_save; |
961 | return old_save; |
927 | } |
962 | } |
928 | |
963 | |
929 | /** Coro ********************************************************************/ |
964 | /** Coro ********************************************************************/ |
930 | |
965 | |
931 | #define PRIO_MAX 3 |
|
|
932 | #define PRIO_HIGH 1 |
|
|
933 | #define PRIO_NORMAL 0 |
|
|
934 | #define PRIO_LOW -1 |
|
|
935 | #define PRIO_IDLE -3 |
|
|
936 | #define PRIO_MIN -4 |
|
|
937 | |
|
|
938 | /* for Coro.pm */ |
|
|
939 | static SV *coro_current; |
|
|
940 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
941 | static int coro_nready; |
|
|
942 | |
|
|
943 | static void |
966 | static void |
944 | coro_enq (SV *coro_sv) |
967 | coro_enq (SV *coro_sv) |
945 | { |
968 | { |
946 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
969 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
947 | coro_nready++; |
|
|
948 | } |
970 | } |
949 | |
971 | |
950 | static SV * |
972 | static SV * |
951 | coro_deq (int min_prio) |
973 | coro_deq (int min_prio) |
952 | { |
974 | { |
… | |
… | |
956 | if (min_prio < 0) |
978 | if (min_prio < 0) |
957 | min_prio = 0; |
979 | min_prio = 0; |
958 | |
980 | |
959 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
981 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
960 | if (AvFILLp (coro_ready [prio]) >= 0) |
982 | if (AvFILLp (coro_ready [prio]) >= 0) |
961 | { |
|
|
962 | coro_nready--; |
|
|
963 | return av_shift (coro_ready [prio]); |
983 | return av_shift (coro_ready [prio]); |
964 | } |
|
|
965 | |
984 | |
966 | return 0; |
985 | return 0; |
967 | } |
986 | } |
968 | |
987 | |
969 | static int |
988 | static int |
… | |
… | |
981 | |
1000 | |
982 | coro->flags |= CF_READY; |
1001 | coro->flags |= CF_READY; |
983 | |
1002 | |
984 | LOCK; |
1003 | LOCK; |
985 | coro_enq (SvREFCNT_inc (coro_sv)); |
1004 | coro_enq (SvREFCNT_inc (coro_sv)); |
|
|
1005 | ++coro_nready; |
986 | UNLOCK; |
1006 | UNLOCK; |
987 | |
1007 | |
988 | return 1; |
1008 | return 1; |
989 | } |
1009 | } |
990 | |
1010 | |
… | |
… | |
1026 | |
1046 | |
1027 | /* cannot transfer to destroyed coros, skip and look for next */ |
1047 | /* cannot transfer to destroyed coros, skip and look for next */ |
1028 | if (ta->next->flags & CF_DESTROYED) |
1048 | if (ta->next->flags & CF_DESTROYED) |
1029 | { |
1049 | { |
1030 | SvREFCNT_dec (next_sv); |
1050 | SvREFCNT_dec (next_sv); |
|
|
1051 | /* coro_nready is already taken care of by destroy */ |
1031 | continue; |
1052 | continue; |
1032 | } |
1053 | } |
1033 | |
1054 | |
|
|
1055 | LOCK; |
|
|
1056 | --coro_nready; |
|
|
1057 | UNLOCK; |
1034 | break; |
1058 | break; |
1035 | } |
1059 | } |
1036 | |
1060 | |
1037 | /* free this only after the transfer */ |
1061 | /* free this only after the transfer */ |
1038 | prev_sv = SvRV (coro_current); |
1062 | prev_sv = SvRV (coro_current); |