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Comparing Coro/Coro/State.xs (file contents):
Revision 1.158 by root, Fri Sep 21 02:23:48 2007 UTC vs.
Revision 1.181 by root, Wed Oct 3 17:37:33 2007 UTC

… …
132static AV *main_mainstack; /* used to differentiate between $main and others */ 132static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 133static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 134static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 135static SV *coro_mortal; /* will be freed after next transfer */
136 136
137static GV *irsgv; /* $/ */
138
139/* async_pool helper stuff */
140static SV *sv_pool_rss;
141static SV *sv_pool_size;
142static AV *av_async_pool;
143
137static struct coro_cctx *cctx_first; 144static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 145static int cctx_count, cctx_idle;
146
147enum {
148 CC_MAPPED = 0x01,
149 CC_NOREUSE = 0x02, /* throw this away after tracing */
150 CC_TRACE = 0x04,
151 CC_TRACE_SUB = 0x08, /* trace sub calls */
152 CC_TRACE_LINE = 0x10, /* trace each statement */
153 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
154};
139 155
140/* this is a structure representing a c-level coroutine */ 156/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 157typedef struct coro_cctx {
142 struct coro_cctx *next; 158 struct coro_cctx *next;
143 159
… …
152 coro_context cctx; 168 coro_context cctx;
153 169
154#if CORO_USE_VALGRIND 170#if CORO_USE_VALGRIND
155 int valgrind_id; 171 int valgrind_id;
156#endif 172#endif
157 char inuse, mapped; 173 unsigned char flags;
158} coro_cctx; 174} coro_cctx;
159 175
160enum { 176enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 177 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 178 CF_READY = 0x0002, /* coroutine is ready */
… …
170 coro_cctx *cctx; 186 coro_cctx *cctx;
171 187
172 /* data associated with this coroutine (initial args) */ 188 /* data associated with this coroutine (initial args) */
173 AV *args; 189 AV *args;
174 int refcnt; 190 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 191 int flags; /* CF_ flags */
177 192
178 /* optionally saved, might be zero */ 193 /* optionally saved, might be zero */
179 AV *defav; /* @_ */ 194 AV *defav; /* @_ */
180 SV *defsv; /* $_ */ 195 SV *defsv; /* $_ */
… …
185 200
186#define VAR(name,type) type name; 201#define VAR(name,type) type name;
187# include "state.h" 202# include "state.h"
188#undef VAR 203#undef VAR
189 204
205 /* statistics */
206 int usecount; /* number of transfers to this coro */
207
190 /* coro process data */ 208 /* coro process data */
191 int prio; 209 int prio;
210 //SV *throw;
211
212 /* async_pool */
213 GV *defoutgv;
192 214
193 /* linked list */ 215 /* linked list */
194 struct coro *next, *prev; 216 struct coro *next, *prev;
195 HV *hv; /* the perl hash associated with this coro, if any */ 217 HV *hv; /* the perl hash associated with this coro, if any */
196}; 218};
… …
284 SvMAGIC (cv) \ 306 SvMAGIC (cv) \
285 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 307 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
286 ? SvMAGIC (cv) \ 308 ? SvMAGIC (cv) \
287 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 309 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
288 : 0 310 : 0
311
312static struct coro *
313SvSTATE_ (pTHX_ SV *coro)
314{
315 HV *stash;
316 MAGIC *mg;
317
318 if (SvROK (coro))
319 coro = SvRV (coro);
320
321 if (SvTYPE (coro) != SVt_PVHV)
322 croak ("Coro::State object required");
323
324 stash = SvSTASH (coro);
325 if (stash != coro_stash && stash != coro_state_stash)
326 {
327 /* very slow, but rare, check */
328 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329 croak ("Coro::State object required");
330 }
331
332 mg = CORO_MAGIC (coro);
333 return (struct coro *)mg->mg_ptr;
334}
335
336#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
289 337
290/* the next two functions merely cache the padlists */ 338/* the next two functions merely cache the padlists */
291static void 339static void
292get_padlist (pTHX_ CV *cv) 340get_padlist (pTHX_ CV *cv)
293{ 341{
… …
332 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 380 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
333} 381}
334 382
335/** load & save, init *******************************************************/ 383/** load & save, init *******************************************************/
336 384
337#define SB do {
338#define SE } while (0)
339
340#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
341
342static void 385static void
343load_perl (pTHX_ Coro__State c) 386load_perl (pTHX_ Coro__State c)
344{ 387{
345#define VAR(name,type) PL_ ## name = c->name; 388#define VAR(name,type) PL_ ## name = c->name;
346# include "state.h" 389# include "state.h"
347#undef VAR 390#undef VAR
348 391
349 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 392 GvSV (PL_defgv) = c->defsv;
350 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 393 GvAV (PL_defgv) = c->defav;
351 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 394 GvSV (PL_errgv) = c->errsv;
352 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); 395 PL_defoutgv = c->deffh;
353 396 PL_rs = c->irssv;
354 if (c->irssv) 397 GvSV (irsgv) = c->irssv_sv;
355 {
356 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
357 {
358 SvREFCNT_dec (c->irssv);
359 c->irssv = 0;
360 }
361 else
362 {
363 REPLACE_SV (PL_rs, c->irssv);
364 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
365 sv_setsv (c->irssv_sv, PL_rs);
366 }
367 }
368 398
369 { 399 {
370 dSP; 400 dSP;
371 CV *cv; 401 CV *cv;
372 402
… …
430 } 460 }
431 461
432 PUTBACK; 462 PUTBACK;
433 } 463 }
434 464
435 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 465 c->defav = GvAV (PL_defgv);
436 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 466 c->defsv = DEFSV;
437 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 467 c->errsv = ERRSV;
438 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 468 c->deffh = PL_defoutgv;
439 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 469 c->irssv = PL_rs;
470 c->irssv_sv = GvSV (irsgv);
440 471
441#define VAR(name,type)c->name = PL_ ## name; 472#define VAR(name,type)c->name = PL_ ## name;
442# include "state.h" 473# include "state.h"
443#undef VAR 474#undef VAR
444} 475}
… …
497 * destroy the stacks, the callchain etc... 528 * destroy the stacks, the callchain etc...
498 */ 529 */
499static void 530static void
500coro_destroy_stacks (pTHX) 531coro_destroy_stacks (pTHX)
501{ 532{
502 if (!IN_DESTRUCT)
503 {
504 /* restore all saved variables and stuff */
505 LEAVE_SCOPE (0);
506 assert (PL_tmps_floor == -1);
507
508 /* free all temporaries */
509 FREETMPS;
510 assert (PL_tmps_ix == -1);
511
512 /* unwind all extra stacks */
513 POPSTACK_TO (PL_mainstack);
514
515 /* unwind main stack */
516 dounwind (-1);
517 }
518
519 while (PL_curstackinfo->si_next) 533 while (PL_curstackinfo->si_next)
520 PL_curstackinfo = PL_curstackinfo->si_next; 534 PL_curstackinfo = PL_curstackinfo->si_next;
521 535
522 while (PL_curstackinfo) 536 while (PL_curstackinfo)
523 { 537 {
… …
539 Safefree (PL_retstack); 553 Safefree (PL_retstack);
540#endif 554#endif
541} 555}
542 556
543static size_t 557static size_t
544coro_rss (struct coro *coro) 558coro_rss (pTHX_ struct coro *coro)
545{ 559{
546 size_t rss = sizeof (coro); 560 size_t rss = sizeof (coro);
547 561
548 if (coro->mainstack) 562 if (coro->mainstack)
549 { 563 {
… …
572} 586}
573 587
574/** coroutine stack handling ************************************************/ 588/** coroutine stack handling ************************************************/
575 589
576static void 590static void
577setup_coro (pTHX_ struct coro *coro) 591coro_setup (pTHX_ struct coro *coro)
578{ 592{
579 /* 593 /*
580 * emulate part of the perl startup here. 594 * emulate part of the perl startup here.
581 */ 595 */
582 coro_init_stacks (aTHX); 596 coro_init_stacks (aTHX);
583 597
598 PL_runops = RUNOPS_DEFAULT;
584 PL_curcop = &PL_compiling; 599 PL_curcop = &PL_compiling;
585 PL_in_eval = EVAL_NULL; 600 PL_in_eval = EVAL_NULL;
586 PL_comppad = 0; 601 PL_comppad = 0;
587 PL_curpm = 0; 602 PL_curpm = 0;
588 PL_localizing = 0; 603 PL_localizing = 0;
589 PL_dirty = 0; 604 PL_dirty = 0;
590 PL_restartop = 0; 605 PL_restartop = 0;
606
607 GvSV (PL_defgv) = NEWSV (0, 0);
608 GvAV (PL_defgv) = coro->args; coro->args = 0;
609 GvSV (PL_errgv) = NEWSV (0, 0);
610 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
611 PL_rs = newSVsv (GvSV (irsgv));
612
613 {
614 IO *io = newIO ();
615 PL_defoutgv = newGVgen ("Coro");
616 GvIOp(PL_defoutgv) = io;
617 IoTYPE (io) = IoTYPE_WRONLY;
618 IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
619 IoFLAGS (io) |= IOf_FLUSH;
620 }
591 621
592 { 622 {
593 dSP; 623 dSP;
594 LOGOP myop; 624 LOGOP myop;
595
596 SvREFCNT_dec (GvAV (PL_defgv));
597 GvAV (PL_defgv) = coro->args; coro->args = 0;
598 625
599 Zero (&myop, 1, LOGOP); 626 Zero (&myop, 1, LOGOP);
600 myop.op_next = Nullop; 627 myop.op_next = Nullop;
601 myop.op_flags = OPf_WANT_VOID; 628 myop.op_flags = OPf_WANT_VOID;
602 629
… …
610 637
611 ENTER; /* necessary e.g. for dounwind */ 638 ENTER; /* necessary e.g. for dounwind */
612} 639}
613 640
614static void 641static void
642coro_destroy (pTHX_ struct coro *coro)
643{
644 if (!IN_DESTRUCT)
645 {
646 /* restore all saved variables and stuff */
647 LEAVE_SCOPE (0);
648 assert (PL_tmps_floor == -1);
649
650 /* free all temporaries */
651 FREETMPS;
652 assert (PL_tmps_ix == -1);
653
654 /* unwind all extra stacks */
655 POPSTACK_TO (PL_mainstack);
656
657 /* unwind main stack */
658 dounwind (-1);
659 }
660
661 SvREFCNT_dec (GvSV (PL_defgv));
662 SvREFCNT_dec (GvAV (PL_defgv));
663 SvREFCNT_dec (GvSV (PL_errgv));
664 SvREFCNT_dec (PL_defoutgv);
665 SvREFCNT_dec (PL_rs);
666 SvREFCNT_dec (GvSV (irsgv));
667
668 SvREFCNT_dec (coro->defoutgv);
669 //SvREFCNT_dec (coro->throw);
670
671 coro_destroy_stacks (aTHX);
672}
673
674static void
615free_coro_mortal (pTHX) 675free_coro_mortal (pTHX)
616{ 676{
617 if (coro_mortal) 677 if (coro_mortal)
618 { 678 {
619 SvREFCNT_dec (coro_mortal); 679 SvREFCNT_dec (coro_mortal);
620 coro_mortal = 0; 680 coro_mortal = 0;
621 } 681 }
682}
683
684static int
685runops_trace (pTHX)
686{
687 COP *oldcop = 0;
688 int oldcxix = -2;
689 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
690 coro_cctx *cctx = coro->cctx;
691
692 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
693 {
694 PERL_ASYNC_CHECK ();
695
696 if (cctx->flags & CC_TRACE_ALL)
697 {
698 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
699 {
700 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
701 SV **bot, **top;
702 AV *av = newAV (); /* return values */
703 SV **cb;
704 dSP;
705
706 GV *gv = CvGV (cx->blk_sub.cv);
707 SV *fullname = sv_2mortal (newSV (0));
708 if (isGV (gv))
709 gv_efullname3 (fullname, gv, 0);
710
711 bot = PL_stack_base + cx->blk_oldsp + 1;
712 top = cx->blk_gimme == G_ARRAY ? SP + 1
713 : cx->blk_gimme == G_SCALAR ? bot + 1
714 : bot;
715
716 while (bot < top)
717 av_push (av, SvREFCNT_inc (*bot++));
718
719 PL_runops = RUNOPS_DEFAULT;
720 ENTER;
721 SAVETMPS;
722 EXTEND (SP, 3);
723 PUSHMARK (SP);
724 PUSHs (&PL_sv_no);
725 PUSHs (fullname);
726 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
727 PUTBACK;
728 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
729 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
730 SPAGAIN;
731 FREETMPS;
732 LEAVE;
733 PL_runops = runops_trace;
734 }
735
736 if (oldcop != PL_curcop)
737 {
738 oldcop = PL_curcop;
739
740 if (PL_curcop != &PL_compiling)
741 {
742 SV **cb;
743
744 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
745 {
746 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
747
748 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
749 {
750 runops_proc_t old_runops = PL_runops;
751 dSP;
752 GV *gv = CvGV (cx->blk_sub.cv);
753 SV *fullname = sv_2mortal (newSV (0));
754
755 if (isGV (gv))
756 gv_efullname3 (fullname, gv, 0);
757
758 PL_runops = RUNOPS_DEFAULT;
759 ENTER;
760 SAVETMPS;
761 EXTEND (SP, 3);
762 PUSHMARK (SP);
763 PUSHs (&PL_sv_yes);
764 PUSHs (fullname);
765 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
766 PUTBACK;
767 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
768 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
769 SPAGAIN;
770 FREETMPS;
771 LEAVE;
772 PL_runops = runops_trace;
773 }
774
775 oldcxix = cxstack_ix;
776 }
777
778 if (cctx->flags & CC_TRACE_LINE)
779 {
780 dSP;
781
782 PL_runops = RUNOPS_DEFAULT;
783 ENTER;
784 SAVETMPS;
785 EXTEND (SP, 3);
786 PL_runops = RUNOPS_DEFAULT;
787 PUSHMARK (SP);
788 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
789 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
790 PUTBACK;
791 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
792 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
793 SPAGAIN;
794 FREETMPS;
795 LEAVE;
796 PL_runops = runops_trace;
797 }
798 }
799 }
800 }
801 }
802
803 TAINT_NOT;
804 return 0;
622} 805}
623 806
624/* inject a fake call to Coro::State::_cctx_init into the execution */ 807/* inject a fake call to Coro::State::_cctx_init into the execution */
625/* _cctx_init should be careful, as it could be called at almost any time */ 808/* _cctx_init should be careful, as it could be called at almost any time */
626/* during execution of a perl program */ 809/* during execution of a perl program */
627static void NOINLINE 810static void NOINLINE
628prepare_cctx (pTHX_ coro_cctx *cctx) 811prepare_cctx (pTHX_ coro_cctx *cctx)
629{ 812{
630 dSP; 813 dSP;
631 LOGOP myop; 814 LOGOP myop;
815
816 PL_top_env = &PL_start_env;
817
818 if (cctx->flags & CC_TRACE)
819 PL_runops = runops_trace;
632 820
633 Zero (&myop, 1, LOGOP); 821 Zero (&myop, 1, LOGOP);
634 myop.op_next = PL_op; 822 myop.op_next = PL_op;
635 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 823 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636 824
… …
653 dTHX; 841 dTHX;
654 842
655 /* coro_run is the alternative tail of transfer(), so unlock here. */ 843 /* coro_run is the alternative tail of transfer(), so unlock here. */
656 UNLOCK; 844 UNLOCK;
657 845
658 PL_top_env = &PL_start_env; 846 /* we now skip the entersub that lead to transfer() */
847 PL_op = PL_op->op_next;
659 848
660 /* inject a fake subroutine call to cctx_init */ 849 /* inject a fake subroutine call to cctx_init */
661 prepare_cctx (aTHX_ (coro_cctx *)arg); 850 prepare_cctx (aTHX_ (coro_cctx *)arg);
662 851
663 /* somebody or something will hit me for both perl_run and PL_restartop */ 852 /* somebody or something will hit me for both perl_run and PL_restartop */
… …
697# if CORO_STACKGUARD 886# if CORO_STACKGUARD
698 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 887 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699# endif 888# endif
700 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 889 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 890 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702 cctx->mapped = 1; 891 cctx->flags |= CC_MAPPED;
703 } 892 }
704 else 893 else
705#endif 894#endif
706 { 895 {
707 cctx->ssize = coro_stacksize * (long)sizeof (long); 896 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
734#if CORO_USE_VALGRIND 923#if CORO_USE_VALGRIND
735 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 924 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736#endif 925#endif
737 926
738#if HAVE_MMAP 927#if HAVE_MMAP
739 if (cctx->mapped) 928 if (cctx->flags & CC_MAPPED)
740 munmap (cctx->sptr, cctx->ssize); 929 munmap (cctx->sptr, cctx->ssize);
741 else 930 else
742#endif 931#endif
743 Safefree (cctx->sptr); 932 Safefree (cctx->sptr);
744 933
… …
752 { 941 {
753 coro_cctx *cctx = cctx_first; 942 coro_cctx *cctx = cctx_first;
754 cctx_first = cctx->next; 943 cctx_first = cctx->next;
755 --cctx_idle; 944 --cctx_idle;
756 945
757 if (cctx->ssize >= coro_stacksize) 946 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
758 return cctx; 947 return cctx;
759 948
760 cctx_destroy (cctx); 949 cctx_destroy (cctx);
761 } 950 }
762 951
763 PL_op = PL_op->op_next;
764 return cctx_new (); 952 return cctx_new ();
765} 953}
766 954
767static void 955static void
768cctx_put (coro_cctx *cctx) 956cctx_put (coro_cctx *cctx)
… …
772 { 960 {
773 coro_cctx *first = cctx_first; 961 coro_cctx *first = cctx_first;
774 cctx_first = first->next; 962 cctx_first = first->next;
775 --cctx_idle; 963 --cctx_idle;
776 964
777 assert (!first->inuse);
778 cctx_destroy (first); 965 cctx_destroy (first);
779 } 966 }
780 967
781 ++cctx_idle; 968 ++cctx_idle;
782 cctx->next = cctx_first; 969 cctx->next = cctx_first;
783 cctx_first = cctx; 970 cctx_first = cctx;
784} 971}
785 972
786/** coroutine switching *****************************************************/ 973/** coroutine switching *****************************************************/
787 974
788/* never call directly, always through the coro_state_transfer global variable */ 975static void NOINLINE
976transfer_check (pTHX_ struct coro *prev, struct coro *next)
977{
978 if (prev != next)
979 {
980 if (!(prev->flags & (CF_RUNNING | CF_NEW)))
981 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
982
983 if (next->flags & CF_RUNNING)
984 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
985
986 if (next->flags & CF_DESTROYED)
987 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
988
989 if (PL_lex_state != LEX_NOTPARSING)
990 croak ("Coro::State::transfer called while parsing, but this is not supported");
991 }
992}
993
994/* always use the TRANSFER macro */
789static void NOINLINE 995static void NOINLINE
790transfer (pTHX_ struct coro *prev, struct coro *next) 996transfer (pTHX_ struct coro *prev, struct coro *next)
791{ 997{
792 dSTACKLEVEL; 998 dSTACKLEVEL;
793 999
… …
803 1009
804 if (prev->flags & CF_NEW) 1010 if (prev->flags & CF_NEW)
805 { 1011 {
806 /* create a new empty context */ 1012 /* create a new empty context */
807 Newz (0, prev->cctx, 1, coro_cctx); 1013 Newz (0, prev->cctx, 1, coro_cctx);
808 prev->cctx->inuse = 1;
809 prev->flags &= ~CF_NEW; 1014 prev->flags &= ~CF_NEW;
810 prev->flags |= CF_RUNNING; 1015 prev->flags |= CF_RUNNING;
811 } 1016 }
812
813 /*TODO: must not croak here */
814 if (!prev->flags & CF_RUNNING)
815 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
816
817 if (next->flags & CF_RUNNING)
818 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
819
820 if (next->flags & CF_DESTROYED)
821 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
822 1017
823 prev->flags &= ~CF_RUNNING; 1018 prev->flags &= ~CF_RUNNING;
824 next->flags |= CF_RUNNING; 1019 next->flags |= CF_RUNNING;
825 1020
826 LOCK; 1021 LOCK;
… …
830 /* need to start coroutine */ 1025 /* need to start coroutine */
831 next->flags &= ~CF_NEW; 1026 next->flags &= ~CF_NEW;
832 /* first get rid of the old state */ 1027 /* first get rid of the old state */
833 save_perl (aTHX_ prev); 1028 save_perl (aTHX_ prev);
834 /* setup coroutine call */ 1029 /* setup coroutine call */
835 setup_coro (aTHX_ next); 1030 coro_setup (aTHX_ next);
836 /* need a new stack */
837 assert (!next->cctx);
838 } 1031 }
839 else 1032 else
840 { 1033 {
841 /* coroutine already started */ 1034 /* coroutine already started */
842 save_perl (aTHX_ prev); 1035 save_perl (aTHX_ prev);
… …
844 } 1037 }
845 1038
846 prev__cctx = prev->cctx; 1039 prev__cctx = prev->cctx;
847 1040
848 /* possibly "free" the cctx */ 1041 /* possibly "free" the cctx */
849 if (prev__cctx->idle_sp == STACKLEVEL) 1042 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
850 { 1043 {
851 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1044 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
852 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1045 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853 1046
854 prev->cctx = 0; 1047 prev->cctx = 0;
855 1048
856 cctx_put (prev__cctx); 1049 cctx_put (prev__cctx);
857 prev__cctx->inuse = 0;
858 } 1050 }
859 1051
1052 ++next->usecount;
1053
860 if (!next->cctx) 1054 if (!next->cctx)
861 {
862 next->cctx = cctx_get (aTHX); 1055 next->cctx = cctx_get (aTHX);
863 assert (!next->cctx->inuse);
864 next->cctx->inuse = 1;
865 }
866 1056
867 if (prev__cctx != next->cctx) 1057 if (prev__cctx != next->cctx)
868 { 1058 {
869 prev__cctx->top_env = PL_top_env; 1059 prev__cctx->top_env = PL_top_env;
870 PL_top_env = next->cctx->top_env; 1060 PL_top_env = next->cctx->top_env;
… …
880{ 1070{
881 struct coro *prev, *next; 1071 struct coro *prev, *next;
882}; 1072};
883 1073
884#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1074#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1075#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885 1076
886/** high level stuff ********************************************************/ 1077/** high level stuff ********************************************************/
887 1078
888static int 1079static int
889coro_state_destroy (pTHX_ struct coro *coro) 1080coro_state_destroy (pTHX_ struct coro *coro)
… …
906 1097
907 if (coro->mainstack && coro->mainstack != main_mainstack) 1098 if (coro->mainstack && coro->mainstack != main_mainstack)
908 { 1099 {
909 struct coro temp; 1100 struct coro temp;
910 1101
911 assert (!(coro->flags & CF_RUNNING));
912
913 Zero (&temp, 1, struct coro);
914 temp.save = CORO_SAVE_ALL;
915
916 if (coro->flags & CF_RUNNING) 1102 if (coro->flags & CF_RUNNING)
917 croak ("FATAL: tried to destroy currently running coroutine"); 1103 croak ("FATAL: tried to destroy currently running coroutine");
918 1104
919 save_perl (aTHX_ &temp); 1105 save_perl (aTHX_ &temp);
920 load_perl (aTHX_ coro); 1106 load_perl (aTHX_ coro);
921 1107
922 coro_destroy_stacks (aTHX); 1108 coro_destroy (aTHX_ coro);
923 1109
924 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1110 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
925 1111
926 coro->mainstack = 0; 1112 coro->mainstack = 0;
927 } 1113 }
… …
972#else 1158#else
973# define MGf_DUP 0 1159# define MGf_DUP 0
974#endif 1160#endif
975}; 1161};
976 1162
977static struct coro *
978SvSTATE_ (pTHX_ SV *coro)
979{
980 HV *stash;
981 MAGIC *mg;
982
983 if (SvROK (coro))
984 coro = SvRV (coro);
985
986 stash = SvSTASH (coro);
987 if (stash != coro_stash && stash != coro_state_stash)
988 {
989 /* very slow, but rare, check */
990 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
991 croak ("Coro::State object required");
992 }
993
994 mg = CORO_MAGIC (coro);
995 return (struct coro *)mg->mg_ptr;
996}
997
998#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
999
1000static void 1163static void
1001prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1164prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002{ 1165{
1003 ta->prev = SvSTATE (prev_sv); 1166 ta->prev = SvSTATE (prev_sv);
1004 ta->next = SvSTATE (next_sv); 1167 ta->next = SvSTATE (next_sv);
1168 TRANSFER_CHECK (*ta);
1005} 1169}
1006 1170
1007static void 1171static void
1008api_transfer (SV *prev_sv, SV *next_sv) 1172api_transfer (SV *prev_sv, SV *next_sv)
1009{ 1173{
1010 dTHX; 1174 dTHX;
1011 struct transfer_args ta; 1175 struct transfer_args ta;
1012 1176
1013 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1177 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014 TRANSFER (ta); 1178 TRANSFER (ta);
1015}
1016
1017static int
1018api_save (SV *coro_sv, int new_save)
1019{
1020 dTHX;
1021 struct coro *coro = SvSTATE (coro_sv);
1022 int old_save = coro->save;
1023
1024 if (new_save >= 0)
1025 coro->save = new_save;
1026
1027 return old_save;
1028} 1179}
1029 1180
1030/** Coro ********************************************************************/ 1181/** Coro ********************************************************************/
1031 1182
1032static void 1183static void
… …
1126 break; 1277 break;
1127 } 1278 }
1128 1279
1129 /* free this only after the transfer */ 1280 /* free this only after the transfer */
1130 prev_sv = SvRV (coro_current); 1281 prev_sv = SvRV (coro_current);
1131 SvRV_set (coro_current, next_sv);
1132 ta->prev = SvSTATE (prev_sv); 1282 ta->prev = SvSTATE (prev_sv);
1133 1283 TRANSFER_CHECK (*ta);
1134 assert (ta->next->flags & CF_READY); 1284 assert (ta->next->flags & CF_READY);
1135 ta->next->flags &= ~CF_READY; 1285 ta->next->flags &= ~CF_READY;
1286 SvRV_set (coro_current, next_sv);
1136 1287
1137 LOCK; 1288 LOCK;
1138 free_coro_mortal (aTHX); 1289 free_coro_mortal (aTHX);
1139 coro_mortal = prev_sv; 1290 coro_mortal = prev_sv;
1140 UNLOCK; 1291 UNLOCK;
… …
1201 } 1352 }
1202 else 1353 else
1203 return 0; 1354 return 0;
1204} 1355}
1205 1356
1357static void
1358api_trace (SV *coro_sv, int flags)
1359{
1360 dTHX;
1361 struct coro *coro = SvSTATE (coro_sv);
1362
1363 if (flags & CC_TRACE)
1364 {
1365 if (!coro->cctx)
1366 coro->cctx = cctx_new ();
1367 else if (!(coro->cctx->flags & CC_TRACE))
1368 croak ("cannot enable tracing on coroutine with custom stack");
1369
1370 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1371 }
1372 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1373 {
1374 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1375
1376 if (coro->flags & CF_RUNNING)
1377 PL_runops = RUNOPS_DEFAULT;
1378 else
1379 coro->runops = RUNOPS_DEFAULT;
1380 }
1381}
1382
1206MODULE = Coro::State PACKAGE = Coro::State 1383MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207 1384
1208PROTOTYPES: DISABLE 1385PROTOTYPES: DISABLE
1209 1386
1210BOOT: 1387BOOT:
1211{ 1388{
1212#ifdef USE_ITHREADS 1389#ifdef USE_ITHREADS
1213 MUTEX_INIT (&coro_mutex); 1390 MUTEX_INIT (&coro_mutex);
1214#endif 1391#endif
1215 BOOT_PAGESIZE; 1392 BOOT_PAGESIZE;
1216 1393
1394 irsgv = gv_fetchpv ("/", 1, SVt_PV);
1395
1217 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1396 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218 1397
1219 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1398 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1399 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1221 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1222 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1223 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1224 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1400 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1401 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226 1402
1227 main_mainstack = PL_mainstack; 1403 main_mainstack = PL_mainstack;
1228 main_top_env = PL_top_env; 1404 main_top_env = PL_top_env;
1229 1405
1230 while (main_top_env->je_prev) 1406 while (main_top_env->je_prev)
… …
1243 struct coro *coro; 1419 struct coro *coro;
1244 HV *hv; 1420 HV *hv;
1245 int i; 1421 int i;
1246 1422
1247 Newz (0, coro, 1, struct coro); 1423 Newz (0, coro, 1, struct coro);
1248 coro->args = newAV (); 1424 coro->args = newAV ();
1249 coro->save = CORO_SAVE_DEF;
1250 coro->flags = CF_NEW; 1425 coro->flags = CF_NEW;
1251 1426
1252 if (coro_first) coro_first->prev = coro; 1427 if (coro_first) coro_first->prev = coro;
1253 coro->next = coro_first; 1428 coro->next = coro_first;
1254 coro_first = coro; 1429 coro_first = coro;
… …
1261 av_push (coro->args, newSVsv (ST (i))); 1436 av_push (coro->args, newSVsv (ST (i)));
1262} 1437}
1263 OUTPUT: 1438 OUTPUT:
1264 RETVAL 1439 RETVAL
1265 1440
1266int 1441# these not obviously related functions are all rolled into the same xs
1267save (SV *coro, int new_save = -1) 1442# function to increase chances that they all will call transfer with the same
1268 CODE: 1443# stack offset
1269 RETVAL = api_save (coro, new_save);
1270 OUTPUT:
1271 RETVAL
1272
1273int
1274save_also (SV *coro_sv, int save_also)
1275 CODE:
1276{
1277 struct coro *coro = SvSTATE (coro_sv);
1278 RETVAL = coro->save;
1279 coro->save |= save_also;
1280}
1281 OUTPUT:
1282 RETVAL
1283
1284void 1444void
1285_set_stacklevel (...) 1445_set_stacklevel (...)
1286 ALIAS: 1446 ALIAS:
1287 Coro::State::transfer = 1 1447 Coro::State::transfer = 1
1288 Coro::schedule = 2 1448 Coro::schedule = 2
… …
1374 if (coro->hv) 1534 if (coro->hv)
1375 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 1535 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376} 1536}
1377 1537
1378void 1538void
1379_eval (Coro::State coro, SV *coderef) 1539call (Coro::State coro, SV *coderef)
1540 ALIAS:
1541 eval = 1
1380 CODE: 1542 CODE:
1381{ 1543{
1382 if (coro->mainstack) 1544 if (coro->mainstack)
1383 { 1545 {
1384 struct coro temp; 1546 struct coro temp;
1385 Zero (&temp, 1, struct coro); 1547 Zero (&temp, 1, struct coro);
1386 temp.save = CORO_SAVE_ALL;
1387 1548
1388 if (!(coro->flags & CF_RUNNING)) 1549 if (!(coro->flags & CF_RUNNING))
1389 { 1550 {
1390 save_perl (aTHX_ &temp); 1551 save_perl (aTHX_ &temp);
1391 load_perl (aTHX_ coro); 1552 load_perl (aTHX_ coro);
… …
1395 dSP; 1556 dSP;
1396 ENTER; 1557 ENTER;
1397 SAVETMPS; 1558 SAVETMPS;
1398 PUSHMARK (SP); 1559 PUSHMARK (SP);
1399 PUTBACK; 1560 PUTBACK;
1561 if (ix)
1562 eval_sv (coderef, 0);
1563 else
1400 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1564 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1401 SPAGAIN; 1565 SPAGAIN;
1402 FREETMPS; 1566 FREETMPS;
1403 LEAVE; 1567 LEAVE;
1404 PUTBACK; 1568 PUTBACK;
1405 } 1569 }
… …
1409 save_perl (aTHX_ coro); 1573 save_perl (aTHX_ coro);
1410 load_perl (aTHX_ &temp); 1574 load_perl (aTHX_ &temp);
1411 } 1575 }
1412 } 1576 }
1413} 1577}
1414 1578
1415SV * 1579SV *
1416is_ready (Coro::State coro) 1580is_ready (Coro::State coro)
1417 PROTOTYPE: $ 1581 PROTOTYPE: $
1418 ALIAS: 1582 ALIAS:
1419 is_ready = CF_READY 1583 is_ready = CF_READY
… …
1423 CODE: 1587 CODE:
1424 RETVAL = boolSV (coro->flags & ix); 1588 RETVAL = boolSV (coro->flags & ix);
1425 OUTPUT: 1589 OUTPUT:
1426 RETVAL 1590 RETVAL
1427 1591
1592void
1593api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1594
1595SV *
1596has_stack (Coro::State coro)
1597 PROTOTYPE: $
1598 CODE:
1599 RETVAL = boolSV (!!coro->cctx);
1600 OUTPUT:
1601 RETVAL
1602
1603int
1604is_traced (Coro::State coro)
1605 PROTOTYPE: $
1606 CODE:
1607 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608 OUTPUT:
1609 RETVAL
1610
1428IV 1611IV
1429rss (Coro::State coro) 1612rss (Coro::State coro)
1430 PROTOTYPE: $ 1613 PROTOTYPE: $
1614 ALIAS:
1615 usecount = 1
1431 CODE: 1616 CODE:
1432 RETVAL = coro_rss (coro); 1617 switch (ix)
1618 {
1619 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1620 case 1: RETVAL = coro->usecount; break;
1621 }
1433 OUTPUT: 1622 OUTPUT:
1434 RETVAL 1623 RETVAL
1435 1624
1436 1625
1437MODULE = Coro::State PACKAGE = Coro 1626MODULE = Coro::State PACKAGE = Coro
1438 1627
1439BOOT: 1628BOOT:
1440{ 1629{
1441 int i; 1630 int i;
1631
1632 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634 av_async_pool = get_av ("Coro::async_pool", TRUE);
1635
1636 coro_current = get_sv ("Coro::current", FALSE);
1637 SvREADONLY_on (coro_current);
1442 1638
1443 coro_stash = gv_stashpv ("Coro", TRUE); 1639 coro_stash = gv_stashpv ("Coro", TRUE);
1444 1640
1445 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1641 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1642 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1643 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1644 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1645 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1646 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451 1647
1452 coro_current = get_sv ("Coro::current", FALSE);
1453 SvREADONLY_on (coro_current);
1454
1455 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1648 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456 coro_ready[i] = newAV (); 1649 coro_ready[i] = newAV ();
1457 1650
1458 { 1651 {
1459 SV *sv = perl_get_sv("Coro::API", 1); 1652 SV *sv = perl_get_sv("Coro::API", 1);
1460 1653
1461 coroapi.schedule = api_schedule; 1654 coroapi.schedule = api_schedule;
1462 coroapi.save = api_save;
1463 coroapi.cede = api_cede; 1655 coroapi.cede = api_cede;
1464 coroapi.cede_notself = api_cede_notself; 1656 coroapi.cede_notself = api_cede_notself;
1465 coroapi.ready = api_ready; 1657 coroapi.ready = api_ready;
1466 coroapi.is_ready = api_is_ready; 1658 coroapi.is_ready = api_is_ready;
1467 coroapi.nready = &coro_nready; 1659 coroapi.nready = &coro_nready;
… …
1516 CODE: 1708 CODE:
1517 RETVAL = coro_nready; 1709 RETVAL = coro_nready;
1518 OUTPUT: 1710 OUTPUT:
1519 RETVAL 1711 RETVAL
1520 1712
1713# for async_pool speedup
1714void
1715_pool_1 (SV *cb)
1716 CODE:
1717{
1718 struct coro *coro = SvSTATE (coro_current);
1719 HV *hv = (HV *)SvRV (coro_current);
1720 AV *defav = GvAV (PL_defgv);
1721 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722 AV *invoke_av;
1723 int i, len;
1724
1725 coro->defoutgv = SvREFCNT_inc (PL_defoutgv);
1726
1727 if (!invoke)
1728 croak ("\3terminate\2\n");
1729
1730 hv_store (hv, "desc", sizeof ("desc") - 1,
1731 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1732
1733 invoke_av = (AV *)SvRV (invoke);
1734 len = av_len (invoke_av);
1735
1736 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1737
1738 if (len > 0)
1739 {
1740 av_fill (defav, len - 1);
1741 for (i = 0; i < len; ++i)
1742 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1743 }
1744
1745
1746
1747 SvREFCNT_dec (invoke);
1748}
1749
1750void
1751_pool_2 (SV *cb)
1752 CODE:
1753{
1754 struct coro *coro = SvSTATE (coro_current);
1755
1756 sv_setsv (cb, &PL_sv_undef);
1757
1758 SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->defoutgv;
1759
1760 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1761 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1762 croak ("\3terminate\2\n");
1763
1764 av_clear (GvAV (PL_defgv));
1765 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767
1768 coro->prio = 0;
1769
1770 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1771 api_trace (coro_current, 0);
1772
1773 av_push (av_async_pool, newSVsv (coro_current));
1774}
1775
1776
1521MODULE = Coro::State PACKAGE = Coro::AIO 1777MODULE = Coro::State PACKAGE = Coro::AIO
1522 1778
1523SV * 1779SV *
1524_get_state () 1780_get_state ()
1525 CODE: 1781 CODE:

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