… | |
… | |
57 | # else |
57 | # else |
58 | # define BOOT_PAGESIZE |
58 | # define BOOT_PAGESIZE |
59 | # endif |
59 | # endif |
60 | #endif |
60 | #endif |
61 | |
61 | |
62 | #define SUB_INIT "Coro::State::initialize" |
62 | #define SUB_INIT "Coro::State::initialize" |
63 | #define UCORO_STATE "_coro_state" |
|
|
64 | |
63 | |
65 | /* The next macro should declare a variable stacklevel that contains and approximation |
64 | /* The next macro should declare a variable stacklevel that contains and approximation |
66 | * to the current C stack pointer. Its property is that it changes with each call |
65 | * to the current C stack pointer. Its property is that it changes with each call |
67 | * and should be unique. */ |
66 | * and should be unique. */ |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
67 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
… | |
… | |
82 | # define UNLOCK (void)0 |
81 | # define UNLOCK (void)0 |
83 | #endif |
82 | #endif |
84 | |
83 | |
85 | static struct CoroAPI coroapi; |
84 | static struct CoroAPI coroapi; |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
85 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
87 | static HV *coro_state_stash; |
86 | static HV *coro_state_stash, *coro_stash; |
88 | static SV *ucoro_state_sv; |
|
|
89 | static U32 ucoro_state_hash; |
|
|
90 | static SV *coro_mortal; /* will be freed after next transfer */ |
87 | static SV *coro_mortal; /* will be freed after next transfer */ |
91 | |
88 | |
92 | /* this is actually not only the c stack but also c registers etc... */ |
89 | /* this is actually not just the c stack but also c registers etc... */ |
93 | typedef struct { |
90 | typedef struct coro_stack { |
94 | int refcnt; /* pointer reference counter */ |
91 | struct coro_stack *next; |
95 | int usecnt; /* shared by how many coroutines */ |
|
|
96 | int gencnt; /* generation counter */ |
|
|
97 | |
92 | |
98 | coro_context cctx; |
93 | void *idle_sp; |
99 | |
|
|
100 | void *sptr; |
94 | void *sptr; |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
95 | long ssize; /* positive == mmap, otherwise malloc */ |
|
|
96 | |
|
|
97 | /* cpu state */ |
|
|
98 | coro_context cctx; |
102 | } coro_stack; |
99 | } coro_stack; |
103 | |
100 | |
|
|
101 | static coro_stack *main_stack; |
|
|
102 | |
104 | struct coro { |
103 | struct coro { |
105 | /* the optional C context */ |
|
|
106 | coro_stack *stack; |
|
|
107 | void *cursp; |
|
|
108 | int gencnt; |
|
|
109 | |
|
|
110 | /* optionally saved, might be zero */ |
104 | /* optionally saved, might be zero */ |
111 | AV *defav; |
105 | AV *defav; |
112 | SV *defsv; |
106 | SV *defsv; |
113 | SV *errsv; |
107 | SV *errsv; |
114 | |
108 | |
115 | /* saved global state not related to stacks */ |
109 | /* saved global state not related to stacks */ |
116 | U8 dowarn; |
110 | U8 dowarn; |
117 | I32 in_eval; |
111 | I32 in_eval; |
|
|
112 | |
|
|
113 | /* the c stack, if any */ |
|
|
114 | coro_stack *stack; |
118 | |
115 | |
119 | /* the stacks and related info (callchain etc..) */ |
116 | /* the stacks and related info (callchain etc..) */ |
120 | PERL_SI *curstackinfo; |
117 | PERL_SI *curstackinfo; |
121 | AV *curstack; |
118 | AV *curstack; |
122 | AV *mainstack; |
119 | AV *mainstack; |
… | |
… | |
145 | I32 retstack_max; |
142 | I32 retstack_max; |
146 | PMOP *curpm; |
143 | PMOP *curpm; |
147 | COP *curcop; |
144 | COP *curcop; |
148 | JMPENV *top_env; |
145 | JMPENV *top_env; |
149 | |
146 | |
|
|
147 | /* coro process data */ |
|
|
148 | int prio; |
|
|
149 | |
150 | /* data associated with this coroutine (initial args) */ |
150 | /* data associated with this coroutine (initial args) */ |
151 | AV *args; |
151 | AV *args; |
|
|
152 | int refcnt; |
152 | }; |
153 | }; |
153 | |
154 | |
154 | typedef struct coro *Coro__State; |
155 | typedef struct coro *Coro__State; |
155 | typedef struct coro *Coro__State_or_hashref; |
156 | typedef struct coro *Coro__State_or_hashref; |
156 | |
157 | |
… | |
… | |
531 | Safefree (PL_retstack); |
532 | Safefree (PL_retstack); |
532 | #endif |
533 | #endif |
533 | } |
534 | } |
534 | |
535 | |
535 | static void |
536 | static void |
536 | allocate_stack (Coro__State ctx, int alloc) |
537 | setup_coro (struct coro *coro) |
537 | { |
|
|
538 | coro_stack *stack; |
|
|
539 | |
|
|
540 | New (0, stack, 1, coro_stack); |
|
|
541 | |
|
|
542 | stack->refcnt = 1; |
|
|
543 | stack->usecnt = 1; |
|
|
544 | stack->gencnt = ctx->gencnt = 0; |
|
|
545 | |
|
|
546 | if (alloc) |
|
|
547 | { |
|
|
548 | #if HAVE_MMAP |
|
|
549 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
550 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
551 | if (stack->sptr != (void *)-1) |
|
|
552 | { |
|
|
553 | # if STACKGUARD |
|
|
554 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
555 | # endif |
|
|
556 | } |
|
|
557 | else |
|
|
558 | #endif |
|
|
559 | { |
|
|
560 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
|
|
561 | New (0, stack->sptr, STACKSIZE, long); |
|
|
562 | } |
|
|
563 | } |
|
|
564 | else |
|
|
565 | stack->sptr = 0; |
|
|
566 | |
|
|
567 | ctx->stack = stack; |
|
|
568 | } |
|
|
569 | |
|
|
570 | static void |
|
|
571 | deallocate_stack (Coro__State ctx) |
|
|
572 | { |
|
|
573 | coro_stack *stack = ctx->stack; |
|
|
574 | |
|
|
575 | ctx->stack = 0; |
|
|
576 | |
|
|
577 | if (stack) |
|
|
578 | { |
|
|
579 | if (!--stack->refcnt) |
|
|
580 | { |
|
|
581 | #ifdef HAVE_MMAP |
|
|
582 | if (stack->ssize > 0 && stack->sptr) |
|
|
583 | munmap (stack->sptr, stack->ssize); |
|
|
584 | else |
|
|
585 | #endif |
|
|
586 | Safefree (stack->sptr); |
|
|
587 | |
|
|
588 | Safefree (stack); |
|
|
589 | } |
|
|
590 | else if (ctx->gencnt == stack->gencnt) |
|
|
591 | --stack->usecnt; |
|
|
592 | } |
|
|
593 | } |
|
|
594 | |
|
|
595 | static void |
|
|
596 | setup_coro (void *arg) |
|
|
597 | { |
538 | { |
598 | /* |
539 | /* |
599 | * emulate part of the perl startup here. |
540 | * emulate part of the perl startup here. |
600 | */ |
541 | */ |
601 | dTHX; |
542 | dTHX; |
602 | dSP; |
543 | dSP; |
603 | Coro__State ctx = (Coro__State)arg; |
544 | UNOP myop; |
604 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
545 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
605 | |
546 | |
606 | coro_init_stacks (aTHX); |
547 | coro_init_stacks (aTHX); |
607 | /*PL_curcop = 0;*/ |
548 | /*PL_curcop = 0;*/ |
608 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
549 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
609 | SvREFCNT_dec (GvAV (PL_defgv)); |
550 | SvREFCNT_dec (GvAV (PL_defgv)); |
610 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
551 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
611 | |
552 | |
612 | SPAGAIN; |
553 | SPAGAIN; |
613 | |
554 | |
614 | if (ctx->stack) |
555 | Zero (&myop, 1, UNOP); |
615 | { |
556 | myop.op_next = Nullop; |
616 | ctx->cursp = 0; |
557 | myop.op_flags = OPf_WANT_VOID; |
617 | |
558 | |
|
|
559 | PL_op = (OP *)&myop; |
|
|
560 | |
618 | PUSHMARK(SP); |
561 | PUSHMARK(SP); |
|
|
562 | XPUSHs (sub_init); |
619 | PUTBACK; |
563 | PUTBACK; |
620 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
564 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
565 | SPAGAIN; |
621 | |
566 | |
622 | if (SvTRUE (ERRSV)) |
567 | ENTER; /* necessary e.g. for dounwind */ |
623 | croak (NULL); |
568 | } |
624 | else |
569 | |
625 | croak ("FATAL: CCTXT coroutine returned!"); |
570 | static void |
|
|
571 | transfer_tail () |
|
|
572 | { |
|
|
573 | if (coro_mortal) |
|
|
574 | { |
|
|
575 | SvREFCNT_dec (coro_mortal); |
|
|
576 | coro_mortal = 0; |
626 | } |
577 | } |
627 | else |
|
|
628 | { |
|
|
629 | UNOP myop; |
|
|
630 | |
578 | |
631 | Zero(&myop, 1, UNOP); |
579 | UNLOCK; |
632 | myop.op_next = Nullop; |
|
|
633 | myop.op_flags = OPf_WANT_VOID; |
|
|
634 | |
|
|
635 | PL_op = (OP *)&myop; |
|
|
636 | |
|
|
637 | PUSHMARK(SP); |
|
|
638 | XPUSHs (sub_init); |
|
|
639 | /* |
|
|
640 | * the next line is slightly wrong, as PL_op->op_next |
|
|
641 | * is actually being executed so we skip the first op. |
|
|
642 | * that doesn't matter, though, since it is only |
|
|
643 | * pp_nextstate and we never return... |
|
|
644 | * ah yes, and I don't care anyways ;) |
|
|
645 | */ |
|
|
646 | PUTBACK; |
|
|
647 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
648 | SPAGAIN; |
|
|
649 | |
|
|
650 | ENTER; /* necessary e.g. for dounwind */ |
|
|
651 | } |
|
|
652 | } |
580 | } |
653 | |
581 | |
654 | static void |
582 | static void |
655 | continue_coro (void *arg) |
583 | coro_run (void *arg) |
656 | { |
584 | { |
657 | /* |
585 | /* |
658 | * this is a _very_ stripped down perl interpreter ;) |
586 | * this is a _very_ stripped down perl interpreter ;) |
659 | */ |
587 | */ |
660 | dTHX; |
588 | dTHX; |
661 | Coro__State ctx = (Coro__State)arg; |
589 | |
|
|
590 | transfer_tail (); |
662 | |
591 | |
663 | PL_top_env = &PL_start_env; |
592 | PL_top_env = &PL_start_env; |
664 | |
|
|
665 | ctx->cursp = 0; |
|
|
666 | PL_op = PL_op->op_next; |
593 | PL_restartop = PL_op->op_next; |
667 | CALLRUNOPS(aTHX); |
594 | /* somebody will hit me for both perl_run and PL_restart_top */ |
|
|
595 | perl_run (aTHX_ PERL_GET_CONTEXT); |
668 | |
596 | |
669 | abort (); |
597 | abort (); |
670 | } |
598 | } |
671 | |
599 | |
|
|
600 | static coro_stack * |
|
|
601 | stack_new () |
|
|
602 | { |
|
|
603 | coro_stack *stack; |
|
|
604 | |
|
|
605 | New (0, stack, 1, coro_stack); |
|
|
606 | |
|
|
607 | #if HAVE_MMAP |
|
|
608 | |
|
|
609 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
610 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
611 | |
|
|
612 | if (stack->sptr == (void *)-1) |
|
|
613 | { |
|
|
614 | fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n"); |
|
|
615 | _exit (EXIT_FAILURE); |
|
|
616 | } |
|
|
617 | |
|
|
618 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
619 | |
|
|
620 | #else |
|
|
621 | |
|
|
622 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
623 | New (0, stack->sptr, STACKSIZE, long); |
|
|
624 | |
|
|
625 | if (!stack->sptr) |
|
|
626 | { |
|
|
627 | fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n"); |
|
|
628 | _exit (EXIT_FAILURE); |
|
|
629 | } |
|
|
630 | |
|
|
631 | #endif |
|
|
632 | |
|
|
633 | coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize); |
|
|
634 | |
|
|
635 | return stack; |
|
|
636 | } |
|
|
637 | |
|
|
638 | static void |
|
|
639 | stack_free (coro_stack *stack) |
|
|
640 | { |
|
|
641 | if (!stack || stack == main_stack) |
|
|
642 | return; |
|
|
643 | |
|
|
644 | #if HAVE_MMAP |
|
|
645 | munmap (stack->sptr, stack->ssize); |
|
|
646 | #else |
|
|
647 | Safefree (stack->sptr); |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | Safefree (stack); |
|
|
651 | } |
|
|
652 | |
|
|
653 | static coro_stack *stack_first; |
|
|
654 | |
|
|
655 | static void |
|
|
656 | stack_get (struct coro *coro) |
|
|
657 | { |
|
|
658 | if (stack_first) |
|
|
659 | { |
|
|
660 | coro->stack = stack_first; |
|
|
661 | stack_first = stack_first->next; |
|
|
662 | } |
|
|
663 | else |
|
|
664 | coro->stack = stack_new (); |
|
|
665 | } |
|
|
666 | |
|
|
667 | static void |
|
|
668 | stack_put (coro_stack *stack) |
|
|
669 | { |
|
|
670 | stack->next = stack_first; |
|
|
671 | stack_first = stack; |
|
|
672 | } |
|
|
673 | |
672 | /* never call directly, always through the coro_state_transfer global variable */ |
674 | /* never call directly, always through the coro_state_transfer global variable */ |
673 | static void |
675 | static void |
674 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
676 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
675 | { |
677 | { |
676 | dSTACKLEVEL; |
678 | dSTACKLEVEL; |
677 | |
679 | |
|
|
680 | /* sometimes transfer is only called to set idle_sp */ |
|
|
681 | if (!prev->stack->idle_sp) |
|
|
682 | prev->stack->idle_sp = stacklevel; |
|
|
683 | |
|
|
684 | LOCK; |
|
|
685 | |
678 | if (prev != next) |
686 | if (prev != next) |
679 | { |
687 | { |
680 | /* has this coro been created yet? */ |
688 | coro_stack *prev_stack = prev->stack; |
681 | if (next->mainstack) |
689 | |
|
|
690 | /* possibly "free" the stack */ |
|
|
691 | if (prev_stack->idle_sp == stacklevel) |
682 | { |
692 | { |
683 | LOCK; |
693 | stack_put (prev_stack); |
|
|
694 | prev->stack = 0; |
|
|
695 | } |
|
|
696 | |
|
|
697 | if (!next->mainstack) |
|
|
698 | { |
|
|
699 | /* first get rid of the old state */ |
|
|
700 | SAVE (prev, -1); |
|
|
701 | /* setup coroutine call */ |
|
|
702 | setup_coro (next); |
|
|
703 | next->stack = 0; |
|
|
704 | } |
|
|
705 | else |
|
|
706 | { |
684 | SAVE (prev, flags); |
707 | SAVE (prev, flags); |
685 | LOAD (next); |
708 | LOAD (next); |
686 | UNLOCK; |
|
|
687 | |
|
|
688 | /* mark this state as in-use */ |
|
|
689 | next->mainstack = 0; |
|
|
690 | next->tmps_ix = -2; |
|
|
691 | |
|
|
692 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
693 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
694 | { |
|
|
695 | if (!prev->stack) |
|
|
696 | allocate_stack (prev, 0); |
|
|
697 | else if (prev->cursp != stacklevel |
|
|
698 | && prev->stack->usecnt > 1) |
|
|
699 | { |
|
|
700 | prev->gencnt = ++prev->stack->gencnt; |
|
|
701 | prev->stack->usecnt = 1; |
|
|
702 | } |
|
|
703 | |
|
|
704 | /* has our stack been invalidated? */ |
|
|
705 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
706 | { |
|
|
707 | deallocate_stack (next); |
|
|
708 | allocate_stack (next, 1); |
|
|
709 | coro_create (&(next->stack->cctx), |
|
|
710 | continue_coro, (void *)next, |
|
|
711 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
712 | } |
|
|
713 | |
|
|
714 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
715 | prev->cursp = stacklevel; |
|
|
716 | /* don't add any code here */ |
|
|
717 | } |
|
|
718 | else |
|
|
719 | next->cursp = stacklevel; |
|
|
720 | } |
709 | } |
721 | else if (next->tmps_ix == -2) |
|
|
722 | croak ("tried to transfer to running coroutine"); |
|
|
723 | else |
|
|
724 | { |
|
|
725 | LOCK; |
|
|
726 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
727 | UNLOCK; |
|
|
728 | |
710 | |
729 | /* create the coroutine for the first time */ |
711 | if (!next->stack) |
730 | if (flags & TRANSFER_SAVE_CCTXT) |
712 | stack_get (next); |
731 | { |
|
|
732 | if (!prev->stack) |
|
|
733 | allocate_stack (prev, 0); |
|
|
734 | |
713 | |
735 | /* the new coroutine starts with start_env again */ |
714 | if (prev_stack != next->stack) |
736 | PL_top_env = &PL_start_env; |
|
|
737 | |
|
|
738 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
739 | { |
|
|
740 | setup_coro (next); |
|
|
741 | next->cursp = stacklevel; |
|
|
742 | |
|
|
743 | prev->stack->refcnt++; |
|
|
744 | prev->stack->usecnt++; |
|
|
745 | next->stack = prev->stack; |
|
|
746 | next->gencnt = prev->gencnt; |
|
|
747 | } |
|
|
748 | else |
|
|
749 | { |
|
|
750 | assert (!next->stack); |
|
|
751 | allocate_stack (next, 1); |
|
|
752 | coro_create (&(next->stack->cctx), |
|
|
753 | setup_coro, (void *)next, |
|
|
754 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
755 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
715 | coro_transfer (&prev_stack->cctx, &next->stack->cctx); |
756 | prev->cursp = stacklevel; |
|
|
757 | /* don't add any code here */ |
|
|
758 | } |
|
|
759 | } |
|
|
760 | else |
|
|
761 | { |
|
|
762 | setup_coro (next); |
|
|
763 | next->cursp = stacklevel; |
|
|
764 | } |
|
|
765 | } |
|
|
766 | } |
716 | } |
767 | |
717 | |
768 | LOCK; |
718 | transfer_tail (); |
769 | if (coro_mortal) |
|
|
770 | { |
|
|
771 | SvREFCNT_dec (coro_mortal); |
|
|
772 | coro_mortal = 0; |
|
|
773 | } |
|
|
774 | UNLOCK; |
|
|
775 | } |
719 | } |
776 | |
720 | |
777 | /* use this function pointer to call the above function */ |
721 | /* use this function pointer to call the above function */ |
778 | /* this is done to increase chances of the compiler not inlining the call */ |
722 | /* this is done to increase chances of the compiler not inlining the call */ |
779 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
723 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
780 | |
724 | |
781 | #define SV_CORO(sv,func) \ |
725 | static void |
782 | do { \ |
726 | coro_state_destroy (struct coro *coro) |
783 | if (SvROK (sv)) \ |
727 | { |
784 | sv = SvRV (sv); \ |
728 | if (coro->refcnt--) |
785 | \ |
729 | return; |
786 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
787 | { \ |
|
|
788 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
789 | \ |
|
|
790 | if (!he) \ |
|
|
791 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
792 | \ |
|
|
793 | (sv) = SvRV (HeVAL(he)); \ |
|
|
794 | } \ |
|
|
795 | \ |
|
|
796 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
797 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
798 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
799 | \ |
|
|
800 | } while(0) |
|
|
801 | |
730 | |
802 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv)) |
731 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
732 | { |
|
|
733 | struct coro temp; |
|
|
734 | |
|
|
735 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
736 | LOAD (aTHX_ coro); |
|
|
737 | |
|
|
738 | destroy_stacks (aTHX); |
|
|
739 | |
|
|
740 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
741 | |
|
|
742 | coro->mainstack = 0; |
|
|
743 | } |
|
|
744 | |
|
|
745 | stack_free (coro->stack); |
|
|
746 | SvREFCNT_dec (coro->args); |
|
|
747 | Safefree (coro); |
|
|
748 | } |
|
|
749 | |
|
|
750 | static int |
|
|
751 | coro_state_clear (SV *sv, MAGIC *mg) |
|
|
752 | { |
|
|
753 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
754 | mg->mg_ptr = 0; |
|
|
755 | |
|
|
756 | coro_state_destroy (coro); |
|
|
757 | |
|
|
758 | return 0; |
|
|
759 | } |
|
|
760 | |
|
|
761 | static int |
|
|
762 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
|
|
763 | { |
|
|
764 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
765 | |
|
|
766 | ++coro->refcnt; |
|
|
767 | |
|
|
768 | return 0; |
|
|
769 | } |
|
|
770 | |
|
|
771 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
772 | |
|
|
773 | static struct coro * |
|
|
774 | SvSTATE (SV *coro) |
|
|
775 | { |
|
|
776 | HV *stash; |
|
|
777 | MAGIC *mg; |
|
|
778 | |
|
|
779 | if (SvROK (coro)) |
|
|
780 | coro = SvRV (coro); |
|
|
781 | |
|
|
782 | stash = SvSTASH (coro); |
|
|
783 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
784 | { |
|
|
785 | /* very slow, but rare, check */ |
|
|
786 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
787 | croak ("Coro::State object required"); |
|
|
788 | } |
|
|
789 | |
|
|
790 | mg = SvMAGIC (coro); |
|
|
791 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
792 | return (struct coro *)mg->mg_ptr; |
|
|
793 | } |
803 | |
794 | |
804 | static void |
795 | static void |
805 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
796 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
806 | { |
797 | { |
807 | SV_CORO (prev, "Coro::transfer"); |
|
|
808 | SV_CORO (next, "Coro::transfer"); |
|
|
809 | |
|
|
810 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
798 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
811 | } |
799 | } |
812 | |
800 | |
813 | /** Coro ********************************************************************/ |
801 | /** Coro ********************************************************************/ |
814 | |
802 | |
… | |
… | |
825 | static int coro_nready; |
813 | static int coro_nready; |
826 | |
814 | |
827 | static void |
815 | static void |
828 | coro_enq (pTHX_ SV *sv) |
816 | coro_enq (pTHX_ SV *sv) |
829 | { |
817 | { |
830 | SV **xprio; |
|
|
831 | int prio; |
818 | int prio; |
832 | |
819 | |
833 | if (SvTYPE (sv) != SVt_PVHV) |
820 | if (SvTYPE (sv) != SVt_PVHV) |
834 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
821 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
835 | |
822 | |
836 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
823 | prio = SvSTATE (sv)->prio; |
837 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
838 | |
|
|
839 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
840 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
841 | : prio; |
|
|
842 | |
824 | |
843 | av_push (coro_ready [prio - PRIO_MIN], sv); |
825 | av_push (coro_ready [prio - PRIO_MIN], sv); |
844 | coro_nready++; |
826 | coro_nready++; |
845 | } |
827 | } |
846 | |
828 | |
… | |
… | |
880 | api_schedule (void) |
862 | api_schedule (void) |
881 | { |
863 | { |
882 | dTHX; |
864 | dTHX; |
883 | |
865 | |
884 | SV *prev, *next; |
866 | SV *prev, *next; |
|
|
867 | SV *current = GvSV (coro_current); |
885 | |
868 | |
|
|
869 | for (;;) |
|
|
870 | { |
886 | LOCK; |
871 | LOCK; |
887 | |
872 | |
888 | prev = SvRV (GvSV (coro_current)); |
|
|
889 | next = coro_deq (aTHX_ PRIO_MIN); |
873 | next = coro_deq (aTHX_ PRIO_MIN); |
890 | |
874 | |
891 | if (!next) |
875 | if (next) |
892 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
876 | break; |
|
|
877 | |
|
|
878 | UNLOCK; |
|
|
879 | |
|
|
880 | { |
|
|
881 | dSP; |
|
|
882 | |
|
|
883 | ENTER; |
|
|
884 | SAVETMPS; |
|
|
885 | |
|
|
886 | PUSHMARK (SP); |
|
|
887 | PUTBACK; |
|
|
888 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
889 | |
|
|
890 | FREETMPS; |
|
|
891 | LEAVE; |
|
|
892 | } |
|
|
893 | } |
|
|
894 | |
|
|
895 | prev = SvRV (current); |
|
|
896 | SvRV (current) = next; |
893 | |
897 | |
894 | /* free this only after the transfer */ |
898 | /* free this only after the transfer */ |
895 | coro_mortal = prev; |
899 | coro_mortal = prev; |
896 | SV_CORO (prev, "Coro::schedule"); |
|
|
897 | |
|
|
898 | SvRV (GvSV (coro_current)) = next; |
|
|
899 | |
|
|
900 | SV_CORO (next, "Coro::schedule"); |
|
|
901 | |
900 | |
902 | UNLOCK; |
901 | UNLOCK; |
903 | |
902 | |
904 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
903 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL); |
905 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
906 | } |
904 | } |
|
|
905 | |
|
|
906 | static int coro_cede_self; |
907 | |
907 | |
908 | static void |
908 | static void |
909 | api_cede (void) |
909 | api_cede (void) |
910 | { |
910 | { |
911 | dTHX; |
911 | dTHX; |
|
|
912 | SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current))); |
912 | |
913 | |
913 | LOCK; |
914 | LOCK; |
914 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
915 | |
|
|
916 | if (coro_cede_self) |
|
|
917 | { |
|
|
918 | AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN]; |
|
|
919 | av_unshift (runqueue, 1); |
|
|
920 | av_store (runqueue, 0, current); |
|
|
921 | coro_nready++; |
|
|
922 | coro_cede_self = 0; |
|
|
923 | } |
|
|
924 | else |
|
|
925 | coro_enq (aTHX_ current); |
|
|
926 | |
915 | UNLOCK; |
927 | UNLOCK; |
916 | |
928 | |
917 | api_schedule (); |
929 | api_schedule (); |
918 | } |
930 | } |
919 | |
931 | |
920 | MODULE = Coro::State PACKAGE = Coro::State |
932 | MODULE = Coro::State PACKAGE = Coro::State |
921 | |
933 | |
922 | PROTOTYPES: ENABLE |
934 | PROTOTYPES: DISABLE |
923 | |
935 | |
924 | BOOT: |
936 | BOOT: |
925 | { /* {} necessary for stoopid perl-5.6.x */ |
937 | { |
926 | #ifdef USE_ITHREADS |
938 | #ifdef USE_ITHREADS |
927 | MUTEX_INIT (&coro_mutex); |
939 | MUTEX_INIT (&coro_mutex); |
928 | #endif |
940 | #endif |
929 | BOOT_PAGESIZE; |
941 | BOOT_PAGESIZE; |
930 | |
942 | |
931 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
932 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
933 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
943 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
934 | |
944 | |
935 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
945 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
936 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
946 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
937 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
947 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
938 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
939 | |
948 | |
940 | main_mainstack = PL_mainstack; |
949 | main_mainstack = PL_mainstack; |
941 | |
950 | |
942 | coroapi.ver = CORO_API_VERSION; |
951 | coroapi.ver = CORO_API_VERSION; |
943 | coroapi.transfer = api_transfer; |
952 | coroapi.transfer = api_transfer; |
944 | } |
|
|
945 | |
953 | |
946 | Coro::State |
954 | Newz (0, main_stack, 1, coro_stack); |
947 | _newprocess(args) |
955 | main_stack->idle_sp = (void *)-1; |
948 | SV * args |
956 | |
949 | PROTOTYPE: $ |
957 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
958 | } |
|
|
959 | |
|
|
960 | SV * |
|
|
961 | new (char *klass, ...) |
950 | CODE: |
962 | CODE: |
951 | Coro__State coro; |
963 | { |
|
|
964 | struct coro *coro; |
|
|
965 | HV *hv; |
|
|
966 | int i; |
952 | |
967 | |
953 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
954 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
955 | |
|
|
956 | Newz (0, coro, 1, struct coro); |
968 | Newz (0, coro, 1, struct coro); |
|
|
969 | coro->args = newAV (); |
957 | |
970 | |
958 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
971 | hv = newHV (); |
|
|
972 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
973 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
974 | |
|
|
975 | av_push (coro->args, newSVsv (RETVAL)); |
|
|
976 | for (i = 1; i < items; i++) |
|
|
977 | av_push (coro->args, newSVsv (ST (i))); |
|
|
978 | |
|
|
979 | coro->stack = main_stack; |
959 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
980 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
960 | /*coro->stack = 0;*/ |
981 | /*coro->stack = 0;*/ |
961 | |
982 | } |
962 | RETVAL = coro; |
|
|
963 | OUTPUT: |
983 | OUTPUT: |
964 | RETVAL |
984 | RETVAL |
965 | |
985 | |
966 | void |
986 | void |
967 | transfer(prev, next, flags) |
987 | transfer (prev, next, flags) |
968 | SV *prev |
988 | SV *prev |
969 | SV *next |
989 | SV *next |
970 | int flags |
990 | int flags |
971 | PROTOTYPE: @ |
|
|
972 | CODE: |
991 | CODE: |
973 | PUTBACK; |
992 | PUTBACK; |
974 | SV_CORO (next, "Coro::transfer"); |
|
|
975 | SV_CORO (prev, "Coro::transfer"); |
|
|
976 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
993 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
977 | SPAGAIN; |
994 | SPAGAIN; |
978 | |
995 | |
|
|
996 | int |
|
|
997 | prio (Coro::State coro, int newprio = 0) |
|
|
998 | ALIAS: |
|
|
999 | nice = 1 |
|
|
1000 | CODE: |
|
|
1001 | { |
|
|
1002 | RETVAL = coro->prio; |
|
|
1003 | |
|
|
1004 | if (items > 1) |
|
|
1005 | { |
|
|
1006 | if (ix) |
|
|
1007 | newprio += coro->prio; |
|
|
1008 | |
|
|
1009 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1010 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1011 | |
|
|
1012 | coro->prio = newprio; |
|
|
1013 | } |
|
|
1014 | } |
|
|
1015 | |
979 | void |
1016 | void |
980 | DESTROY(coro) |
1017 | _clear_idle_sp (Coro::State self) |
981 | Coro::State coro |
1018 | CODE: |
982 | CODE: |
1019 | self->stack->idle_sp = 0; |
983 | |
|
|
984 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
985 | { |
|
|
986 | struct coro temp; |
|
|
987 | |
|
|
988 | PUTBACK; |
|
|
989 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
990 | LOAD (aTHX_ coro); |
|
|
991 | SPAGAIN; |
|
|
992 | |
|
|
993 | destroy_stacks (aTHX); |
|
|
994 | |
|
|
995 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
996 | SPAGAIN; |
|
|
997 | |
|
|
998 | coro->mainstack = 0; |
|
|
999 | } |
|
|
1000 | |
|
|
1001 | deallocate_stack (coro); |
|
|
1002 | SvREFCNT_dec (coro->args); |
|
|
1003 | Safefree (coro); |
|
|
1004 | |
1020 | |
1005 | void |
1021 | void |
|
|
1022 | _clone_state_from (SV *dst, SV *src) |
|
|
1023 | CODE: |
|
|
1024 | { |
|
|
1025 | struct coro *coro_src = SvSTATE (src); |
|
|
1026 | |
|
|
1027 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1028 | |
|
|
1029 | ++coro_src->refcnt; |
|
|
1030 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | void |
1006 | _exit(code) |
1034 | _exit (code) |
1007 | int code |
1035 | int code |
1008 | PROTOTYPE: $ |
1036 | PROTOTYPE: $ |
1009 | CODE: |
1037 | CODE: |
1010 | _exit (code); |
1038 | _exit (code); |
1011 | |
1039 | |
1012 | MODULE = Coro::State PACKAGE = Coro::Cont |
1040 | MODULE = Coro::State PACKAGE = Coro::Cont |
1013 | |
1041 | |
1014 | void |
1042 | void |
1015 | yield(...) |
1043 | yield (...) |
1016 | PROTOTYPE: @ |
1044 | PROTOTYPE: @ |
1017 | CODE: |
1045 | CODE: |
|
|
1046 | { |
1018 | SV *yieldstack; |
1047 | SV *yieldstack; |
1019 | SV *sv; |
1048 | SV *sv; |
1020 | AV *defav = GvAV (PL_defgv); |
1049 | AV *defav = GvAV (PL_defgv); |
1021 | struct coro *prev, *next; |
1050 | struct coro *prev, *next; |
1022 | |
1051 | |
… | |
… | |
1031 | av_fill (defav, items - 1); |
1060 | av_fill (defav, items - 1); |
1032 | while (items--) |
1061 | while (items--) |
1033 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1062 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1034 | |
1063 | |
1035 | sv = av_pop ((AV *)SvRV (yieldstack)); |
1064 | sv = av_pop ((AV *)SvRV (yieldstack)); |
1036 | prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1065 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
1037 | next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1066 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
1038 | SvREFCNT_dec (sv); |
1067 | SvREFCNT_dec (sv); |
1039 | |
1068 | |
1040 | coro_state_transfer (aTHX_ prev, next, 0); |
1069 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1070 | } |
1041 | |
1071 | |
1042 | MODULE = Coro::State PACKAGE = Coro |
1072 | MODULE = Coro::State PACKAGE = Coro |
1043 | |
1073 | |
1044 | BOOT: |
1074 | BOOT: |
1045 | { |
1075 | { |
1046 | int i; |
1076 | int i; |
|
|
1077 | |
1047 | HV *stash = gv_stashpv ("Coro", TRUE); |
1078 | coro_stash = gv_stashpv ("Coro", TRUE); |
1048 | |
1079 | |
1049 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1080 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1050 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1081 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1051 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1082 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1052 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1083 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1053 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1084 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1054 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1085 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1055 | |
1086 | |
1056 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1087 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1057 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1088 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1058 | |
1089 | |
1059 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1090 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1072 | sv_setiv (sv, (IV)&coroapi); |
1103 | sv_setiv (sv, (IV)&coroapi); |
1073 | SvREADONLY_on (sv); |
1104 | SvREADONLY_on (sv); |
1074 | } |
1105 | } |
1075 | } |
1106 | } |
1076 | |
1107 | |
1077 | #if !PERL_MICRO |
|
|
1078 | |
|
|
1079 | void |
1108 | void |
1080 | ready(self) |
1109 | ready (SV *self) |
1081 | SV * self |
|
|
1082 | PROTOTYPE: $ |
1110 | PROTOTYPE: $ |
1083 | CODE: |
1111 | CODE: |
1084 | api_ready (self); |
1112 | api_ready (self); |
1085 | |
1113 | |
1086 | #endif |
|
|
1087 | |
|
|
1088 | int |
1114 | int |
1089 | nready(...) |
1115 | nready (...) |
1090 | PROTOTYPE: |
1116 | PROTOTYPE: |
1091 | CODE: |
1117 | CODE: |
1092 | RETVAL = coro_nready; |
1118 | RETVAL = coro_nready; |
1093 | OUTPUT: |
1119 | OUTPUT: |
1094 | RETVAL |
1120 | RETVAL |
1095 | |
1121 | |
1096 | void |
1122 | void |
1097 | schedule(...) |
1123 | schedule (...) |
1098 | PROTOTYPE: |
1124 | PROTOTYPE: |
1099 | CODE: |
1125 | CODE: |
1100 | api_schedule (); |
1126 | api_schedule (); |
1101 | |
1127 | |
1102 | void |
1128 | void |
|
|
1129 | _set_cede_self () |
|
|
1130 | CODE: |
|
|
1131 | coro_cede_self = 1; |
|
|
1132 | |
|
|
1133 | void |
1103 | cede(...) |
1134 | cede (...) |
1104 | PROTOTYPE: |
1135 | PROTOTYPE: |
1105 | CODE: |
1136 | CODE: |
1106 | api_cede (); |
1137 | api_cede (); |
1107 | |
1138 | |
1108 | # and these are hacks |
1139 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1140 | |
1109 | SV * |
1141 | SV * |
1110 | _aio_get_state () |
1142 | _get_state () |
1111 | CODE: |
1143 | CODE: |
1112 | { |
1144 | { |
1113 | struct { |
1145 | struct { |
1114 | int errorno; |
1146 | int errorno; |
1115 | int laststype; |
1147 | int laststype; |
… | |
… | |
1126 | } |
1158 | } |
1127 | OUTPUT: |
1159 | OUTPUT: |
1128 | RETVAL |
1160 | RETVAL |
1129 | |
1161 | |
1130 | void |
1162 | void |
1131 | _aio_set_state (char *data_) |
1163 | _set_state (char *data_) |
1132 | PROTOTYPE: $ |
1164 | PROTOTYPE: $ |
1133 | CODE: |
1165 | CODE: |
1134 | { |
1166 | { |
1135 | struct { |
1167 | struct { |
1136 | int errorno; |
1168 | int errorno; |