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Comparing Coro/Coro/State.xs (file contents):
Revision 1.31 by root, Sun Aug 26 16:36:08 2001 UTC vs.
Revision 1.39 by root, Sun Nov 25 20:04:05 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
… …
26/* The next macro should declare a variable stacklevel that contains and approximation 26/* The next macro should declare a variable stacklevel that contains and approximation
27 * to the current C stack pointer. Its property is that it changes with each call 27 * to the current C stack pointer. Its property is that it changes with each call
28 * and should be unique. */ 28 * and should be unique. */
29#define dSTACKLEVEL void *stacklevel = &stacklevel 29#define dSTACKLEVEL void *stacklevel = &stacklevel
30 30
31#define IN_DESTRUCT (PL_main_cv == Nullcv)
32
31#define labs(l) ((l) >= 0 ? (l) : -(l)) 33#define labs(l) ((l) >= 0 ? (l) : -(l))
32 34
33#include "CoroAPI.h" 35#include "CoroAPI.h"
34 36
35static struct CoroAPI coroapi; 37static struct CoroAPI coroapi;
… …
54 56
55 /* optionally saved, might be zero */ 57 /* optionally saved, might be zero */
56 AV *defav; 58 AV *defav;
57 SV *defsv; 59 SV *defsv;
58 SV *errsv; 60 SV *errsv;
61 /* TODO: PL_pmop might be nice && effortless to save. */
59 62
60 /* saved global state not related to stacks */ 63 /* saved global state not related to stacks */
61 U8 dowarn; 64 U8 dowarn;
62 I32 in_eval; 65 I32 in_eval;
63 66
… …
99static AV *main_mainstack; /* used to differentiate between $main and others */ 102static AV *main_mainstack; /* used to differentiate between $main and others */
100static HV *coro_state_stash; 103static HV *coro_state_stash;
101static SV *ucoro_state_sv; 104static SV *ucoro_state_sv;
102static U32 ucoro_state_hash; 105static U32 ucoro_state_hash;
103static HV *padlist_cache; 106static HV *padlist_cache;
107static SV *coro_mortal; /* will be freed after next transfer */
104 108
105/* mostly copied from op.c:cv_clone2 */ 109/* mostly copied from op.c:cv_clone2 */
106STATIC AV * 110STATIC AV *
107clone_padlist (AV *protopadlist) 111clone_padlist (AV *protopadlist)
108{ 112{
… …
487 * still there is a memleak of 128 bytes... 491 * still there is a memleak of 128 bytes...
488 */ 492 */
489STATIC void 493STATIC void
490destroy_stacks(pTHX) 494destroy_stacks(pTHX)
491{ 495{
492 int destruct = PL_main_cv != Nullcv; 496 if (!IN_DESTRUCT)
493
494 if (destruct)
495 { 497 {
496 /* is this ugly, I ask? */ 498 /* is this ugly, I ask? */
497 while (PL_scopestack_ix) 499 while (PL_scopestack_ix)
498 LEAVE; 500 LEAVE;
499 501
… …
513 dSP; 515 dSP;
514 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 516 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515 PUTBACK; /* possibly superfluous */ 517 PUTBACK; /* possibly superfluous */
516 } 518 }
517 519
518 if (destruct) 520 if (!IN_DESTRUCT)
519 { 521 {
520 dounwind(-1); 522 dounwind(-1);
521 SvREFCNT_dec(PL_curstackinfo->si_stack); 523 SvREFCNT_dec(PL_curstackinfo->si_stack);
522 } 524 }
523 525
… …
543 stack->refcnt = 1; 545 stack->refcnt = 1;
544 stack->usecnt = 1; 546 stack->usecnt = 1;
545 stack->gencnt = ctx->gencnt = 0; 547 stack->gencnt = ctx->gencnt = 0;
546 if (alloc) 548 if (alloc)
547 { 549 {
548#ifdef HAVE_MMAP 550#if HAVE_MMAP
549 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 */
550 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);
551 if (stack->sptr == (void *)-1) 553 if (stack->sptr == (void *)-1)
552#endif 554#endif
553 { 555 {
554 /*FIXME*//*D*//* reasonable stack size! */ 556 /*FIXME*//*D*//* reasonable stack size! */
555 stack->ssize = -4096 * sizeof (long); 557 stack->ssize = -4096 * sizeof (long);
… …
650{ 652{
651 /* 653 /*
652 * this is a _very_ stripped down perl interpreter ;) 654 * this is a _very_ stripped down perl interpreter ;)
653 */ 655 */
654 Coro__State ctx = (Coro__State)arg; 656 Coro__State ctx = (Coro__State)arg;
657 JMPENV coro_start_env;
655 658
656 /*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
657 ctx->cursp = 0; 665 ctx->cursp = 0;
658 PL_op = PL_op->op_next; 666 PL_op = PL_op->op_next;
659 CALLRUNOPS(aTHX); 667 CALLRUNOPS(aTHX);
660 668
661 abort (); 669 abort ();
… …
738 } 746 }
739 } 747 }
740 else 748 else
741 setup_coro (next); 749 setup_coro (next);
742 } 750 }
743 }
744 751
745 /* 752 /*
746 * xnext is now either prev or next, depending on wether 753 * xnext is now either prev or next, depending on wether
747 * we switched the c stack or not. that's why i use a global 754 * we switched the c stack or not. that's why i use a global
748 * variable, that should become thread-specific at one point. 755 * variable, that should become thread-specific at one point.
749 */ 756 */
750 xnext->cursp = stacklevel; 757 xnext->cursp = stacklevel;
751}
752
753static struct coro *
754sv_to_coro (SV *arg, const char *funcname, const char *varname)
755{
756 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
757 { 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 { \
758 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); 774 HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
759 775 \
760 if (!he) 776 if (!he) \
761 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); 777 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
762 778 \
763 arg = HeVAL(he); 779 (sv) = SvRV (HeVAL(he)); \
764 } 780 } \
765 781 \
766 /* must also be changed inside Coro::Cont::yield */ 782 /* must also be changed inside Coro::Cont::yield */ \
767 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 783 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \
768 return (struct coro *) SvIV((SV*)SvRV(arg));
769
770 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 784 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
771 /*NORETURN*/ 785 \
772} 786 } while(0)
787
788#define SvSTATE(sv) (struct coro *)SvIV (sv)
773 789
774static void 790static void
775api_transfer(pTHX_ SV *prev, SV *next, int flags) 791api_transfer(pTHX_ SV *prev, SV *next, int flags)
776{ 792{
777 transfer(aTHX_ 793 SV_CORO (prev, "Coro::transfer");
778 sv_to_coro (prev, "Coro::transfer", "prev"), 794 SV_CORO (next, "Coro::transfer");
779 sv_to_coro (next, "Coro::transfer", "next"), 795
780 flags); 796 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
781} 797}
782 798
783/** Coro ********************************************************************/ 799/** Coro ********************************************************************/
784 800
785#define PRIO_MAX 3 801#define PRIO_MAX 3
… …
795static int coro_nready; 811static int coro_nready;
796 812
797static void 813static void
798coro_enq (SV *sv) 814coro_enq (SV *sv)
799{ 815{
800 if (SvROK (sv))
801 {
802 SV *hv = SvRV (sv);
803 if (SvTYPE (hv) == SVt_PVHV) 816 if (SvTYPE (sv) == SVt_PVHV)
804 { 817 {
805 SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); 818 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
806 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 819 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
807 820
808 prio = prio > PRIO_MAX ? PRIO_MAX 821 prio = prio > PRIO_MAX ? PRIO_MAX
809 : prio < PRIO_MIN ? PRIO_MIN 822 : prio < PRIO_MIN ? PRIO_MIN
810 : prio; 823 : prio;
811 824
812 av_push (coro_ready [prio - PRIO_MIN], sv); 825 av_push (coro_ready [prio - PRIO_MIN], sv);
813 coro_nready++; 826 coro_nready++;
814 827
815 return; 828 return;
816 }
817 } 829 }
818 830
819 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 831 croak ("Coro::ready tried to enqueue something that is not a coroutine");
820} 832}
821 833
… …
839} 851}
840 852
841static void 853static void
842api_ready (SV *coro) 854api_ready (SV *coro)
843{ 855{
856 if (SvROK (coro))
857 coro = SvRV (coro);
858
844 coro_enq (SvREFCNT_inc (coro)); 859 coro_enq (SvREFCNT_inc (coro));
845} 860}
846 861
847static void 862static void
848api_schedule (int cede) 863api_schedule (void)
849{ 864{
850 SV *prev, *next; 865 SV *prev, *next;
851 866
852 prev = GvSV (coro_current); 867 prev = SvRV (GvSV (coro_current));
853
854 if (cede)
855 coro_enq (SvREFCNT_inc (prev));
856
857 next = coro_deq (PRIO_MIN); 868 next = coro_deq (PRIO_MIN);
858 869
859 if (!next) 870 if (!next)
860 next = SvREFCNT_inc (GvSV (coro_idle)); 871 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
861 872
862 GvSV (coro_current) = SvREFCNT_inc (next); 873 coro_mortal = prev;
863 transfer (aTHX_ 874 SV_CORO (prev, "Coro::schedule");
864 sv_to_coro (prev, "Coro::schedule", "current coroutine"), 875
865 sv_to_coro (next, "Coro::schedule", "next coroutine"), 876 SvRV (GvSV (coro_current)) = next;
877
878 SV_CORO (next, "Coro::schedule");
879
880 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
866 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 881 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
867 SvREFCNT_dec (next); 882}
868 SvREFCNT_dec (prev); 883
884static void
885api_cede (void)
886{
887 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
888
889 api_schedule ();
869} 890}
870 891
871MODULE = Coro::State PACKAGE = Coro::State 892MODULE = Coro::State PACKAGE = Coro::State
872 893
873PROTOTYPES: ENABLE 894PROTOTYPES: ENABLE
… …
912 OUTPUT: 933 OUTPUT:
913 RETVAL 934 RETVAL
914 935
915void 936void
916transfer(prev, next, flags) 937transfer(prev, next, flags)
917 Coro::State_or_hashref prev 938 SV *prev
918 Coro::State_or_hashref next 939 SV *next
919 int flags 940 int flags
920 PROTOTYPE: @ 941 PROTOTYPE: @
921 CODE: 942 CODE:
922 PUTBACK; 943 PUTBACK;
944 SV_CORO (next, "Coro::transfer");
945 SV_CORO (prev, "Coro::transfer");
923 transfer (aTHX_ prev, next, flags); 946 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
924 SPAGAIN; 947 SPAGAIN;
925 948
926void 949void
927DESTROY(coro) 950DESTROY(coro)
928 Coro::State coro 951 Coro::State coro
… …
1023 1046
1024 { 1047 {
1025 SV *sv = perl_get_sv("Coro::API", 1); 1048 SV *sv = perl_get_sv("Coro::API", 1);
1026 1049
1027 coroapi.schedule = api_schedule; 1050 coroapi.schedule = api_schedule;
1051 coroapi.cede = api_cede;
1028 coroapi.ready = api_ready; 1052 coroapi.ready = api_ready;
1029 coroapi.nready = &coro_nready; 1053 coroapi.nready = &coro_nready;
1030 coroapi.current = coro_current; 1054 coroapi.current = coro_current;
1031 1055
1032 GCoroAPI = &coroapi; 1056 GCoroAPI = &coroapi;
… …
1036} 1060}
1037 1061
1038void 1062void
1039ready(self) 1063ready(self)
1040 SV * self 1064 SV * self
1065 PROTOTYPE: $
1041 CODE: 1066 CODE:
1042 api_ready (self); 1067 api_ready (self);
1043 1068
1044int 1069int
1045nready(...) 1070nready(...)
… …
1050 RETVAL 1075 RETVAL
1051 1076
1052void 1077void
1053schedule(...) 1078schedule(...)
1054 PROTOTYPE: 1079 PROTOTYPE:
1055 ALIAS:
1056 cede = 1
1057 CODE: 1080 CODE:
1058 api_schedule (ix); 1081 api_schedule ();
1059 1082
1083void
1084cede(...)
1085 PROTOTYPE:
1086 CODE:
1087 api_cede ();
1088

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