… | |
… | |
16 | # undef HAVE_MMAP |
16 | # undef HAVE_MMAP |
17 | # endif |
17 | # endif |
18 | # endif |
18 | # endif |
19 | #endif |
19 | #endif |
20 | |
20 | |
21 | #define MAY_FLUSH /* increases codesize */ |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
22 | |
22 | |
23 | #define SUB_INIT "Coro::State::initialize" |
23 | #define SUB_INIT "Coro::State::initialize" |
24 | #define UCORO_STATE "_coro_state" |
24 | #define UCORO_STATE "_coro_state" |
25 | |
25 | |
26 | /* The next macro should delcare 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 labs(l) ((l) >= 0 ? (l) : -(l)) |
31 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
… | |
… | |
270 | #endif |
270 | #endif |
271 | |
271 | |
272 | #define SB do { |
272 | #define SB do { |
273 | #define SE } while (0) |
273 | #define SE } while (0) |
274 | |
274 | |
275 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
275 | #define LOAD(state) load_state(aTHX_ (state)); |
276 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
276 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
277 | |
277 | |
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
279 | |
279 | |
280 | static void |
280 | static void |
281 | load_state(pTHX_ Coro__State c) |
281 | load_state(pTHX_ Coro__State c) |
… | |
… | |
355 | |
355 | |
356 | PUSHs (Nullsv); |
356 | PUSHs (Nullsv); |
357 | /* this loop was inspired by pp_caller */ |
357 | /* this loop was inspired by pp_caller */ |
358 | for (;;) |
358 | for (;;) |
359 | { |
359 | { |
360 | do |
360 | while (cxix >= 0) |
361 | { |
361 | { |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
363 | |
363 | |
364 | if (CxTYPE(cx) == CXt_SUB) |
364 | if (CxTYPE(cx) == CXt_SUB) |
365 | { |
365 | { |
… | |
… | |
391 | /* I never used formats, so how should I know how these are implemented? */ |
391 | /* I never used formats, so how should I know how these are implemented? */ |
392 | /* my bold guess is as a simple, plain sub... */ |
392 | /* my bold guess is as a simple, plain sub... */ |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
394 | } |
394 | } |
395 | } |
395 | } |
396 | while (cxix >= 0); |
|
|
397 | |
396 | |
398 | if (top_si->si_type == PERLSI_MAIN) |
397 | if (top_si->si_type == PERLSI_MAIN) |
399 | break; |
398 | break; |
400 | |
399 | |
401 | top_si = top_si->si_prev; |
400 | top_si = top_si->si_prev; |
… | |
… | |
407 | } |
406 | } |
408 | |
407 | |
409 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
408 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
410 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
409 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
411 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
410 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
412 | |
|
|
413 | /* I have not the slightest idea of why av_reify is necessary */ |
|
|
414 | /* but if it's missing the defav contents magically get replaced sometimes */ |
|
|
415 | if (c->defav) |
|
|
416 | av_reify (c->defav); |
|
|
417 | |
411 | |
418 | c->dowarn = PL_dowarn; |
412 | c->dowarn = PL_dowarn; |
419 | c->in_eval = PL_in_eval; |
413 | c->in_eval = PL_in_eval; |
420 | |
414 | |
421 | c->curstackinfo = PL_curstackinfo; |
415 | c->curstackinfo = PL_curstackinfo; |
… | |
… | |
493 | * still there is a memleak of 128 bytes... |
487 | * still there is a memleak of 128 bytes... |
494 | */ |
488 | */ |
495 | STATIC void |
489 | STATIC void |
496 | destroy_stacks(pTHX) |
490 | destroy_stacks(pTHX) |
497 | { |
491 | { |
|
|
492 | int destruct = PL_main_cv != Nullcv; |
|
|
493 | |
|
|
494 | if (destruct) |
|
|
495 | { |
498 | /* is this ugly, I ask? */ |
496 | /* is this ugly, I ask? */ |
499 | while (PL_scopestack_ix) |
497 | while (PL_scopestack_ix) |
500 | LEAVE; |
498 | LEAVE; |
501 | |
499 | |
502 | /* sure it is, but more important: is it correct?? :/ */ |
500 | /* sure it is, but more important: is it correct?? :/ */ |
503 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
501 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
504 | FREETMPS; |
502 | FREETMPS; |
|
|
503 | } |
505 | |
504 | |
506 | while (PL_curstackinfo->si_next) |
505 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
507 | |
509 | while (PL_curstackinfo) |
508 | while (PL_curstackinfo) |
… | |
… | |
514 | dSP; |
513 | dSP; |
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
516 | PUTBACK; /* possibly superfluous */ |
515 | PUTBACK; /* possibly superfluous */ |
517 | } |
516 | } |
518 | |
517 | |
519 | if (PL_main_cv != Nullcv) /* don't during destruction. hack? */ |
518 | if (destruct) |
|
|
519 | { |
520 | dounwind(-1); |
520 | dounwind(-1); |
521 | |
|
|
522 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
521 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
|
|
522 | } |
|
|
523 | |
523 | Safefree(PL_curstackinfo->si_cxstack); |
524 | Safefree(PL_curstackinfo->si_cxstack); |
524 | Safefree(PL_curstackinfo); |
525 | Safefree(PL_curstackinfo); |
525 | PL_curstackinfo = p; |
526 | PL_curstackinfo = p; |
526 | } |
527 | } |
527 | |
528 | |
… | |
… | |
649 | { |
650 | { |
650 | /* |
651 | /* |
651 | * this is a _very_ stripped down perl interpreter ;) |
652 | * this is a _very_ stripped down perl interpreter ;) |
652 | */ |
653 | */ |
653 | Coro__State ctx = (Coro__State)arg; |
654 | Coro__State ctx = (Coro__State)arg; |
|
|
655 | JMPENV coro_start_env; |
654 | |
656 | |
655 | /*FIXME*//* must set up top_env here */ |
657 | /* same as JMPENV_BOOTSTRAP */ |
|
|
658 | Zero(&coro_start_env, 1, JMPENV); |
|
|
659 | coro_start_env.je_ret = -1; |
|
|
660 | coro_start_env.je_mustcatch = TRUE; |
|
|
661 | PL_top_env = &coro_start_env; |
|
|
662 | |
656 | ctx->cursp = 0; |
663 | ctx->cursp = 0; |
657 | PL_op = PL_op->op_next; |
664 | PL_op = PL_op->op_next; |
658 | CALLRUNOPS(aTHX); |
665 | CALLRUNOPS(aTHX); |
659 | |
666 | |
660 | abort (); |
667 | abort (); |
661 | } |
668 | } |
662 | |
669 | |
663 | STATIC void |
670 | STATIC void |
664 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
671 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
665 | { |
672 | { |
666 | dSP; |
|
|
667 | dSTACKLEVEL; |
673 | dSTACKLEVEL; |
|
|
674 | static struct coro *xnext; |
668 | |
675 | |
669 | if (prev != next) |
676 | if (prev != next) |
670 | { |
677 | { |
|
|
678 | xnext = next; |
|
|
679 | |
671 | if (next->mainstack) |
680 | if (next->mainstack) |
672 | { |
681 | { |
673 | SAVE (prev, flags); |
682 | SAVE (prev, flags); |
674 | LOAD (next); |
683 | LOAD (next); |
675 | |
684 | |
… | |
… | |
698 | continue_coro, (void *)next, |
707 | continue_coro, (void *)next, |
699 | next->stack->sptr, labs (next->stack->ssize)); |
708 | next->stack->sptr, labs (next->stack->ssize)); |
700 | } |
709 | } |
701 | |
710 | |
702 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
711 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
712 | /* don't add any code here */ |
703 | } |
713 | } |
704 | |
714 | |
705 | } |
715 | } |
706 | else if (next->tmps_ix == -2) |
716 | else if (next->tmps_ix == -2) |
707 | croak ("tried to transfer to running coroutine"); |
717 | croak ("tried to transfer to running coroutine"); |
… | |
… | |
728 | allocate_stack (next, 1); |
738 | allocate_stack (next, 1); |
729 | coro_create (&(next->stack->cctx), |
739 | coro_create (&(next->stack->cctx), |
730 | setup_coro, (void *)next, |
740 | setup_coro, (void *)next, |
731 | next->stack->sptr, labs (next->stack->ssize)); |
741 | next->stack->sptr, labs (next->stack->ssize)); |
732 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
742 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
743 | /* don't add any code here */ |
733 | } |
744 | } |
734 | } |
745 | } |
735 | else |
746 | else |
736 | setup_coro (next); |
747 | setup_coro (next); |
737 | } |
748 | } |
738 | } |
749 | } |
739 | |
750 | |
|
|
751 | /* |
|
|
752 | * xnext is now either prev or next, depending on wether |
|
|
753 | * we switched the c stack or not. that's why i use a global |
|
|
754 | * variable, that should become thread-specific at one point. |
|
|
755 | */ |
740 | next->cursp = stacklevel; |
756 | xnext->cursp = stacklevel; |
741 | } |
757 | } |
742 | |
758 | |
743 | static struct coro * |
759 | static struct coro * |
744 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
760 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
745 | { |
761 | { |
… | |
… | |
920 | |
936 | |
921 | if (coro->mainstack && coro->mainstack != main_mainstack) |
937 | if (coro->mainstack && coro->mainstack != main_mainstack) |
922 | { |
938 | { |
923 | struct coro temp; |
939 | struct coro temp; |
924 | |
940 | |
|
|
941 | PUTBACK; |
925 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
942 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
926 | LOAD(aTHX_ coro); |
943 | LOAD(aTHX_ coro); |
|
|
944 | SPAGAIN; |
927 | |
945 | |
928 | destroy_stacks (aTHX); |
946 | destroy_stacks (aTHX); |
929 | |
947 | |
930 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
948 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
949 | SPAGAIN; |
931 | |
950 | |
932 | coro->mainstack = 0; |
951 | coro->mainstack = 0; |
933 | } |
952 | } |
934 | |
953 | |
935 | deallocate_stack (coro); |
954 | deallocate_stack (coro); |