ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.28 by root, Sat Aug 25 21:32:05 2001 UTC vs.
Revision 1.38 by root, Wed Nov 7 00:21:06 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
… …
355 358
356 PUSHs (Nullsv); 359 PUSHs (Nullsv);
357 /* this loop was inspired by pp_caller */ 360 /* this loop was inspired by pp_caller */
358 for (;;) 361 for (;;)
359 { 362 {
360 do 363 while (cxix >= 0)
361 { 364 {
362 PERL_CONTEXT *cx = &ccstk[cxix--]; 365 PERL_CONTEXT *cx = &ccstk[cxix--];
363 366
364 if (CxTYPE(cx) == CXt_SUB) 367 if (CxTYPE(cx) == CXt_SUB)
365 { 368 {
… …
391 /* I never used formats, so how should I know how these are implemented? */ 394 /* I never used formats, so how should I know how these are implemented? */
392 /* my bold guess is as a simple, plain sub... */ 395 /* my bold guess is as a simple, plain sub... */
393 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); 396 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394 } 397 }
395 } 398 }
396 while (cxix >= 0);
397 399
398 if (top_si->si_type == PERLSI_MAIN) 400 if (top_si->si_type == PERLSI_MAIN)
399 break; 401 break;
400 402
401 top_si = top_si->si_prev; 403 top_si = top_si->si_prev;
… …
488 * still there is a memleak of 128 bytes... 490 * still there is a memleak of 128 bytes...
489 */ 491 */
490STATIC void 492STATIC void
491destroy_stacks(pTHX) 493destroy_stacks(pTHX)
492{ 494{
495 if (!IN_DESTRUCT)
496 {
493 /* is this ugly, I ask? */ 497 /* is this ugly, I ask? */
494 while (PL_scopestack_ix) 498 while (PL_scopestack_ix)
495 LEAVE; 499 LEAVE;
496 500
497 /* sure it is, but more important: is it correct?? :/ */ 501 /* sure it is, but more important: is it correct?? :/ */
498 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ 502 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
499 FREETMPS; 503 FREETMPS;
504 }
500 505
501 while (PL_curstackinfo->si_next) 506 while (PL_curstackinfo->si_next)
502 PL_curstackinfo = PL_curstackinfo->si_next; 507 PL_curstackinfo = PL_curstackinfo->si_next;
503 508
504 while (PL_curstackinfo) 509 while (PL_curstackinfo)
… …
509 dSP; 514 dSP;
510 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 515 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511 PUTBACK; /* possibly superfluous */ 516 PUTBACK; /* possibly superfluous */
512 } 517 }
513 518
514 if (PL_main_cv != Nullcv) /* don't during destruction. hack? */ 519 if (!IN_DESTRUCT)
520 {
515 dounwind(-1); 521 dounwind(-1);
516
517 SvREFCNT_dec(PL_curstackinfo->si_stack); 522 SvREFCNT_dec(PL_curstackinfo->si_stack);
523 }
524
518 Safefree(PL_curstackinfo->si_cxstack); 525 Safefree(PL_curstackinfo->si_cxstack);
519 Safefree(PL_curstackinfo); 526 Safefree(PL_curstackinfo);
520 PL_curstackinfo = p; 527 PL_curstackinfo = p;
521 } 528 }
522 529
… …
537 stack->refcnt = 1; 544 stack->refcnt = 1;
538 stack->usecnt = 1; 545 stack->usecnt = 1;
539 stack->gencnt = ctx->gencnt = 0; 546 stack->gencnt = ctx->gencnt = 0;
540 if (alloc) 547 if (alloc)
541 { 548 {
542#ifdef HAVE_MMAP 549#if HAVE_MMAP
543 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ 550 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */
544 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); 551 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
545 if (stack->sptr == (void *)-1) 552 if (stack->sptr == (void *)-1)
546#endif 553#endif
547 { 554 {
548 /*FIXME*//*D*//* reasonable stack size! */ 555 /*FIXME*//*D*//* reasonable stack size! */
549 stack->ssize = -4096 * sizeof (long); 556 stack->ssize = -4096 * sizeof (long);
… …
563 570
564 ctx->stack = 0; 571 ctx->stack = 0;
565 572
566 if (stack) 573 if (stack)
567 { 574 {
568 printf ("deallocating stack %p %d\n", stack, stack->refcnt);/*D*/
569 if (!--stack->refcnt) 575 if (!--stack->refcnt)
570 { 576 {
571#ifdef HAVE_MMAP 577#ifdef HAVE_MMAP
572 if (stack->ssize > 0 && stack->sptr) 578 if (stack->ssize > 0 && stack->sptr)
573 munmap (stack->sptr, stack->ssize); 579 munmap (stack->sptr, stack->ssize);
… …
645{ 651{
646 /* 652 /*
647 * this is a _very_ stripped down perl interpreter ;) 653 * this is a _very_ stripped down perl interpreter ;)
648 */ 654 */
649 Coro__State ctx = (Coro__State)arg; 655 Coro__State ctx = (Coro__State)arg;
656 JMPENV coro_start_env;
650 657
651 /*FIXME*//* must set up top_env here */ 658 /* same as JMPENV_BOOTSTRAP */
659 Zero(&coro_start_env, 1, JMPENV);
660 coro_start_env.je_ret = -1;
661 coro_start_env.je_mustcatch = TRUE;
662 PL_top_env = &coro_start_env;
663
652 ctx->cursp = 0; 664 ctx->cursp = 0;
653 PL_op = PL_op->op_next; 665 PL_op = PL_op->op_next;
654 CALLRUNOPS(aTHX); 666 CALLRUNOPS(aTHX);
655 667
656 abort (); 668 abort ();
… …
660transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 672transfer(pTHX_ struct coro *prev, struct coro *next, int flags)
661{ 673{
662 dSTACKLEVEL; 674 dSTACKLEVEL;
663 static struct coro *xnext; 675 static struct coro *xnext;
664 676
665 printf ("%p => %p\n", prev, next);/*D*/
666 if (prev != next) 677 if (prev != next)
667 { 678 {
668 xnext = next; 679 xnext = next;
669 680
670 if (next->mainstack) 681 if (next->mainstack)
… …
734 } 745 }
735 } 746 }
736 else 747 else
737 setup_coro (next); 748 setup_coro (next);
738 } 749 }
739 }
740 750
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 */
741 xnext->cursp = stacklevel; 756 xnext->cursp = stacklevel;
757 }
742} 758}
743 759
744static struct coro * 760static struct coro *
745sv_to_coro (SV *arg, const char *funcname, const char *varname) 761sv_to_coro (SV *arg, const char *funcname, const char *varname)
746{ 762{
… …
753 769
754 arg = HeVAL(he); 770 arg = HeVAL(he);
755 } 771 }
756 772
757 /* must also be changed inside Coro::Cont::yield */ 773 /* must also be changed inside Coro::Cont::yield */
774 if (SvROK(arg) && SvOBJECT(SvRV(arg))
758 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 775 && SvSTASH(SvRV(arg)) == coro_state_stash)
759 return (struct coro *) SvIV((SV*)SvRV(arg)); 776 return (struct coro *) SvIV((SV*)SvRV(arg));
760 777
761 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 778 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);
762 /*NORETURN*/ 779 /*NORETURN*/
763} 780}
… …
1027} 1044}
1028 1045
1029void 1046void
1030ready(self) 1047ready(self)
1031 SV * self 1048 SV * self
1049 PROTOTYPE: $
1032 CODE: 1050 CODE:
1033 api_ready (self); 1051 api_ready (self);
1034 1052
1035int 1053int
1036nready(...) 1054nready(...)

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines