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Comparing Coro/Coro/State.xs (file contents):
Revision 1.404 by root, Fri Jun 10 12:27:02 2011 UTC vs.
Revision 1.424 by root, Fri Nov 30 19:27:28 2012 UTC

… …
12#include "perl.h" 12#include "perl.h"
13#include "XSUB.h" 13#include "XSUB.h"
14#include "perliol.h" 14#include "perliol.h"
15 15
16#include "schmorp.h" 16#include "schmorp.h"
17
18#define ECB_NO_THREADS 1
17#include "ecb.h" 19#include "ecb.h"
18 20
19#include <stddef.h> 21#include <stddef.h>
20#include <stdio.h> 22#include <stdio.h>
21#include <errno.h> 23#include <errno.h>
… …
33# define setjmp _setjmp /* deep magic */ 35# define setjmp _setjmp /* deep magic */
34#else 36#else
35# include <inttypes.h> /* most portable stdint.h */ 37# include <inttypes.h> /* most portable stdint.h */
36#endif 38#endif
37 39
38#ifdef HAVE_MMAP 40#if HAVE_MMAP
39# include <unistd.h> 41# include <unistd.h>
40# include <sys/mman.h> 42# include <sys/mman.h>
41# ifndef MAP_ANONYMOUS 43# ifndef MAP_ANONYMOUS
42# ifdef MAP_ANON 44# ifdef MAP_ANON
43# define MAP_ANONYMOUS MAP_ANON 45# define MAP_ANONYMOUS MAP_ANON
… …
63#endif 65#endif
64 66
65/* the maximum number of idle cctx that will be pooled */ 67/* the maximum number of idle cctx that will be pooled */
66static int cctx_max_idle = 4; 68static int cctx_max_idle = 4;
67 69
70#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
71# define HAS_SCOPESTACK_NAME 1
72#endif
73
68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 74#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
69# undef CORO_STACKGUARD 75# undef CORO_STACKGUARD
70#endif 76#endif
71 77
72#ifndef CORO_STACKGUARD 78#ifndef CORO_STACKGUARD
… …
174 void *sptr; 180 void *sptr;
175 size_t ssize; 181 size_t ssize;
176 182
177 /* cpu state */ 183 /* cpu state */
178 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185#ifndef NDEBUG
179 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 186 JMPENV *idle_te; /* same as idle_sp, but for top_env */
187#endif
180 JMPENV *top_env; 188 JMPENV *top_env;
181 coro_context cctx; 189 coro_context cctx;
182 190
183 U32 gen; 191 U32 gen;
184#if CORO_USE_VALGRIND 192#if CORO_USE_VALGRIND
… …
204}; 212};
205 213
206/* the structure where most of the perl state is stored, overlaid on the cxstack */ 214/* the structure where most of the perl state is stored, overlaid on the cxstack */
207typedef struct 215typedef struct
208{ 216{
209 SV *defsv;
210 AV *defav;
211 SV *errsv;
212 SV *irsgv;
213 HV *hinthv;
214#define VAR(name,type) type name; 217 #define VARx(name,expr,type) type name;
215# include "state.h" 218 #include "state.h"
216#undef VAR
217} perl_slots; 219} perl_slots;
218 220
219// how many context stack entries do we need for perl_slots 221/* how many context stack entries do we need for perl_slots */
220#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
221 223
222/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
223struct coro 225struct coro
224{ 226{
… …
290static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 292static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
291static CV *cv_coro_run; 293static CV *cv_coro_run;
292static struct coro *coro_first; 294static struct coro *coro_first;
293#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
294 296
297/** JIT *********************************************************************/
298
299#if CORO_JIT
300 /* APPLE doesn't have HAVE_MMAP though */
301 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
302 #ifndef CORO_JIT_TYPE
303 #if __x86_64 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "amd64-unix"
305 #elif __i386 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "x86-unix"
307 #endif
308 #endif
309#endif
310
311#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
312 #undef CORO_JIT
313#endif
314
315#if CORO_JIT
316 typedef void (*load_save_perl_slots_type)(perl_slots *);
317 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
318#endif
319
295/** Coro::Select ************************************************************/ 320/** Coro::Select ************************************************************/
296 321
297static OP *(*coro_old_pp_sselect) (pTHX); 322static OP *(*coro_old_pp_sselect) (pTHX);
298static SV *coro_select_select; 323static SV *coro_select_select;
299 324
… …
314 339
315/** time stuff **************************************************************/ 340/** time stuff **************************************************************/
316 341
317#ifdef HAS_GETTIMEOFDAY 342#ifdef HAS_GETTIMEOFDAY
318 343
319ECB_INLINE void 344ecb_inline void
320coro_u2time (pTHX_ UV ret[2]) 345coro_u2time (pTHX_ UV ret[2])
321{ 346{
322 struct timeval tv; 347 struct timeval tv;
323 gettimeofday (&tv, 0); 348 gettimeofday (&tv, 0);
324 349
325 ret [0] = tv.tv_sec; 350 ret [0] = tv.tv_sec;
326 ret [1] = tv.tv_usec; 351 ret [1] = tv.tv_usec;
327} 352}
328 353
329ECB_INLINE double 354ecb_inline double
330coro_nvtime () 355coro_nvtime (void)
331{ 356{
332 struct timeval tv; 357 struct timeval tv;
333 gettimeofday (&tv, 0); 358 gettimeofday (&tv, 0);
334 359
335 return tv.tv_sec + tv.tv_usec * 1e-6; 360 return tv.tv_sec + tv.tv_usec * 1e-6;
336} 361}
337 362
338ECB_INLINE void 363ecb_inline void
339time_init (pTHX) 364time_init (pTHX)
340{ 365{
341 nvtime = coro_nvtime; 366 nvtime = coro_nvtime;
342 u2time = coro_u2time; 367 u2time = coro_u2time;
343} 368}
344 369
345#else 370#else
346 371
347ECB_INLINE void 372ecb_inline void
348time_init (pTHX) 373time_init (pTHX)
349{ 374{
350 SV **svp; 375 SV **svp;
351 376
352 require_pv ("Time/HiRes.pm"); 377 require_pv ("Time/HiRes.pm");
353 378
354 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 379 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
355 380
356 if (!svp) croak ("Time::HiRes is required, but missing. Caught"); 381 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
357 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); 382 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
358 383
… …
394 get_hv (name, create); 419 get_hv (name, create);
395#endif 420#endif
396 return get_hv (name, create); 421 return get_hv (name, create);
397} 422}
398 423
399ECB_INLINE void 424ecb_inline void
400coro_times_update () 425coro_times_update (void)
401{ 426{
402#ifdef coro_clock_gettime 427#ifdef coro_clock_gettime
403 struct timespec ts; 428 struct timespec ts;
404 429
405 ts.tv_sec = ts.tv_nsec = 0; 430 ts.tv_sec = ts.tv_nsec = 0;
… …
417 time_real [0] = tv [0]; 442 time_real [0] = tv [0];
418 time_real [1] = tv [1] * 1000; 443 time_real [1] = tv [1] * 1000;
419#endif 444#endif
420} 445}
421 446
422ECB_INLINE void 447ecb_inline void
423coro_times_add (struct coro *c) 448coro_times_add (struct coro *c)
424{ 449{
425 c->t_real [1] += time_real [1]; 450 c->t_real [1] += time_real [1];
426 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 451 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
427 c->t_real [0] += time_real [0]; 452 c->t_real [0] += time_real [0];
… …
429 c->t_cpu [1] += time_cpu [1]; 454 c->t_cpu [1] += time_cpu [1];
430 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 455 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
431 c->t_cpu [0] += time_cpu [0]; 456 c->t_cpu [0] += time_cpu [0];
432} 457}
433 458
434ECB_INLINE void 459ecb_inline void
435coro_times_sub (struct coro *c) 460coro_times_sub (struct coro *c)
436{ 461{
437 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 462 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
438 c->t_real [1] -= time_real [1]; 463 c->t_real [1] -= time_real [1];
439 c->t_real [0] -= time_real [0]; 464 c->t_real [0] -= time_real [0];
… …
460 : 0) 485 : 0)
461 486
462#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 487#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
463#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 488#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
464 489
465ECB_INLINE MAGIC * 490ecb_inline MAGIC *
466SvSTATEhv_p (pTHX_ SV *coro) 491SvSTATEhv_p (pTHX_ SV *coro)
467{ 492{
468 MAGIC *mg; 493 MAGIC *mg;
469 494
470 if (ecb_expect_true ( 495 if (ecb_expect_true (
… …
475 return mg; 500 return mg;
476 501
477 return 0; 502 return 0;
478} 503}
479 504
480ECB_INLINE struct coro * 505ecb_inline struct coro *
481SvSTATE_ (pTHX_ SV *coro) 506SvSTATE_ (pTHX_ SV *coro)
482{ 507{
483 MAGIC *mg; 508 MAGIC *mg;
484 509
485 if (SvROK (coro)) 510 if (SvROK (coro))
… …
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 524#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500 525
501/*****************************************************************************/ 526/*****************************************************************************/
502/* padlist management and caching */ 527/* padlist management and caching */
503 528
504ECB_INLINE AV * 529ecb_inline AV *
505coro_derive_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
506{ 531{
507 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
508 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
509 534
… …
521 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
522 547
523 return newpadlist; 548 return newpadlist;
524} 549}
525 550
526ECB_INLINE void 551ecb_inline void
527free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
528{ 553{
529 /* may be during global destruction */ 554 /* may be during global destruction */
530 if (!IN_DESTRUCT) 555 if (!IN_DESTRUCT)
531 { 556 {
… …
574 0, 0, 0, 0, 599 0, 0, 0, 0,
575 coro_cv_free 600 coro_cv_free
576}; 601};
577 602
578/* the next two functions merely cache the padlists */ 603/* the next two functions merely cache the padlists */
579ECB_INLINE void 604ecb_inline void
580get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
581{ 606{
582 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
583 AV *av; 608 AV *av;
584 609
… …
597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
598#endif 623#endif
599 } 624 }
600} 625}
601 626
602ECB_INLINE void 627ecb_inline void
603put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
604{ 629{
605 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
606 AV *av; 631 AV *av;
607 632
… …
616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
617} 642}
618 643
619/** load & save, init *******************************************************/ 644/** load & save, init *******************************************************/
620 645
646ecb_inline void
647swap_sv (SV *a, SV *b)
648{
649 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
650 SV tmp;
651
652 /* swap sv_any */
653 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
654
655 /* swap sv_flags */
656 SvFLAGS (&tmp) = SvFLAGS (a);
657 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
658 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
659
660#if PERL_VERSION_ATLEAST (5,10,0)
661 /* perl 5.10 and later complicates this _quite_ a bit, but it also
662 * is much faster, so no quarrels here. alternatively, we could
663 * sv_upgrade to avoid this.
664 */
665 {
666 /* swap sv_u */
667 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
668
669 /* if SvANY points to the head, we need to adjust the pointers,
670 * as the pointer for a still points to b, and maybe vice versa.
671 */
672 #define svany_in_head(type) \
673 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
674
675 if (svany_in_head (SvTYPE (a)))
676 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
677
678 if (svany_in_head (SvTYPE (b)))
679 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
680 }
681#endif
682}
683
621/* swap sv heads, at least logically */ 684/* swap sv heads, at least logically */
622static void 685static void
623swap_svs (pTHX_ Coro__State c) 686swap_svs (pTHX_ Coro__State c)
624{ 687{
625 int i; 688 int i;
626 689
627 for (i = 0; i <= AvFILLp (c->swap_sv); ) 690 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
628 { 691 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
629 SV *a = AvARRAY (c->swap_sv)[i++];
630 SV *b = AvARRAY (c->swap_sv)[i++];
631
632 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
633 SV tmp;
634
635 /* swap sv_any */
636 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
637
638 /* swap sv_flags */
639 SvFLAGS (&tmp) = SvFLAGS (a);
640 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
641 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
642
643#if PERL_VERSION_ATLEAST (5,10,0)
644 /* perl 5.10 complicates this _quite_ a bit, but it also is
645 * much faster, so no quarrels here. alternatively, we could
646 * sv_upgrade to avoid this.
647 */
648 {
649 /* swap sv_u */
650 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
651
652 /* if SvANY points to the head, we need to adjust the pointers,
653 * as the pointer for a still points to b, and maybe vice versa.
654 */
655 #define svany_in_head(type) \
656 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
657
658 if (svany_in_head (SvTYPE (a)))
659 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
660
661 if (svany_in_head (SvTYPE (b)))
662 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
663 }
664#endif
665 }
666} 692}
667 693
668#define SWAP_SVS(coro) \ 694#define SWAP_SVS(coro) \
669 if (ecb_expect_false ((coro)->swap_sv)) \ 695 if (ecb_expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro)) 696 swap_svs (aTHX_ (coro))
… …
678 perl_slots *slot = c->slot; 704 perl_slots *slot = c->slot;
679 c->slot = 0; 705 c->slot = 0;
680 706
681 PL_mainstack = c->mainstack; 707 PL_mainstack = c->mainstack;
682 708
683 GvSV (PL_defgv) = slot->defsv; 709#if CORO_JIT
684 GvAV (PL_defgv) = slot->defav; 710 load_perl_slots (slot);
685 GvSV (PL_errgv) = slot->errsv; 711#else
686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
688
689 #define VAR(name,type) PL_ ## name = slot->name; 712 #define VARx(name,expr,type) expr = slot->name;
690 # include "state.h" 713 #include "state.h"
691 #undef VAR 714#endif
692 715
693 { 716 {
694 dSP; 717 dSP;
695 718
696 CV *cv; 719 CV *cv;
… …
798 821
799 PUTBACK; 822 PUTBACK;
800 } 823 }
801 824
802 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
803 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max)) 826 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
804 { 827 {
805 unsigned int i; 828 unsigned int i;
806 829
807 for (i = 0; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
808 CXINC; 831 CXINC;
… …
813 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
814 837
815 { 838 {
816 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
817 840
818 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
819 slot->defsv = DEFSV; 842 save_perl_slots (slot);
820 slot->errsv = ERRSV; 843#else
821 slot->irsgv = GvSV (irsgv);
822 slot->hinthv = GvHV (PL_hintgv);
823
824 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
825 # include "state.h" 845 #include "state.h"
826 #undef VAR 846#endif
827 } 847 }
828} 848}
829 849
830/* 850/*
831 * allocate various perl stacks. This is almost an exact copy 851 * allocate various perl stacks. This is almost an exact copy
… …
862#endif 882#endif
863 883
864 New(54,PL_scopestack,8,I32); 884 New(54,PL_scopestack,8,I32);
865 PL_scopestack_ix = 0; 885 PL_scopestack_ix = 0;
866 PL_scopestack_max = 8; 886 PL_scopestack_max = 8;
887#if HAS_SCOPESTACK_NAME
888 New(54,PL_scopestack_name,8,const char*);
889#endif
867 890
868 New(54,PL_savestack,24,ANY); 891 New(54,PL_savestack,24,ANY);
869 PL_savestack_ix = 0; 892 PL_savestack_ix = 0;
870 PL_savestack_max = 24; 893 PL_savestack_max = 24;
871 894
… …
899 } 922 }
900 923
901 Safefree (PL_tmps_stack); 924 Safefree (PL_tmps_stack);
902 Safefree (PL_markstack); 925 Safefree (PL_markstack);
903 Safefree (PL_scopestack); 926 Safefree (PL_scopestack);
927#if HAS_SCOPESTACK_NAME
928 Safefree (PL_scopestack_name);
929#endif
904 Safefree (PL_savestack); 930 Safefree (PL_savestack);
905#if !PERL_VERSION_ATLEAST (5,10,0) 931#if !PERL_VERSION_ATLEAST (5,10,0)
906 Safefree (PL_retstack); 932 Safefree (PL_retstack);
907#endif 933#endif
908} 934}
… …
968 { 994 {
969 SV **svp = 0; 995 SV **svp = 0;
970 996
971 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 997 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
972 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 998 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
973 999
974 if (svp) 1000 if (svp)
975 { 1001 {
976 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1002 SV *ssv;
1003
1004 if (!*svp)
1005 ssv = &PL_sv_undef;
1006 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1007 ssv = sv_2mortal (newRV_inc (*svp));
1008 else
1009 ssv = *svp;
1010
1011 sv_setsv (sv, ssv);
977 return 0; 1012 return 0;
978 } 1013 }
979 } 1014 }
980 1015
981 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1016 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
… …
1075 PL_hints = 0; 1110 PL_hints = 0;
1076 1111
1077 /* recreate the die/warn hooks */ 1112 /* recreate the die/warn hooks */
1078 PL_diehook = SvREFCNT_inc (rv_diehook); 1113 PL_diehook = SvREFCNT_inc (rv_diehook);
1079 PL_warnhook = SvREFCNT_inc (rv_warnhook); 1114 PL_warnhook = SvREFCNT_inc (rv_warnhook);
1080 1115
1081 GvSV (PL_defgv) = newSV (0); 1116 GvSV (PL_defgv) = newSV (0);
1082 GvAV (PL_defgv) = coro->args; coro->args = 0; 1117 GvAV (PL_defgv) = coro->args; coro->args = 0;
1083 GvSV (PL_errgv) = newSV (0); 1118 GvSV (PL_errgv) = newSV (0);
1084 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1119 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1085 GvHV (PL_hintgv) = 0; 1120 GvHV (PL_hintgv) = 0;
… …
1173 /* restore swapped sv's */ 1208 /* restore swapped sv's */
1174 SWAP_SVS (coro); 1209 SWAP_SVS (coro);
1175 1210
1176 coro_destruct_stacks (aTHX); 1211 coro_destruct_stacks (aTHX);
1177 1212
1178 // now save some sv's to be free'd later 1213 /* now save some sv's to be free'd later */
1179 svf [0] = GvSV (PL_defgv); 1214 svf [0] = GvSV (PL_defgv);
1180 svf [1] = (SV *)GvAV (PL_defgv); 1215 svf [1] = (SV *)GvAV (PL_defgv);
1181 svf [2] = GvSV (PL_errgv); 1216 svf [2] = GvSV (PL_errgv);
1182 svf [3] = (SV *)PL_defoutgv; 1217 svf [3] = (SV *)PL_defoutgv;
1183 svf [4] = PL_rs; 1218 svf [4] = PL_rs;
… …
1203 SvREFCNT_dec (coro->invoke_cb); 1238 SvREFCNT_dec (coro->invoke_cb);
1204 SvREFCNT_dec (coro->invoke_av); 1239 SvREFCNT_dec (coro->invoke_av);
1205 } 1240 }
1206} 1241}
1207 1242
1208ECB_INLINE void 1243ecb_inline void
1209free_coro_mortal (pTHX) 1244free_coro_mortal (pTHX)
1210{ 1245{
1211 if (ecb_expect_true (coro_mortal)) 1246 if (ecb_expect_true (coro_mortal))
1212 { 1247 {
1213 SvREFCNT_dec ((SV *)coro_mortal); 1248 SvREFCNT_dec ((SV *)coro_mortal);
… …
1372 slf_frame.prepare = slf_prepare_set_stacklevel; 1407 slf_frame.prepare = slf_prepare_set_stacklevel;
1373 slf_frame.check = slf_check_set_stacklevel; 1408 slf_frame.check = slf_check_set_stacklevel;
1374} 1409}
1375 1410
1376/* the tail of transfer: execute stuff we can only do after a transfer */ 1411/* the tail of transfer: execute stuff we can only do after a transfer */
1377ECB_INLINE void 1412ecb_inline void
1378transfer_tail (pTHX) 1413transfer_tail (pTHX)
1379{ 1414{
1380 free_coro_mortal (aTHX); 1415 free_coro_mortal (aTHX);
1416}
1417
1418/* try to exit the same way perl's main function would do */
1419/* we do not bother resetting the environment or other things *7
1420/* that are not, uhm, essential */
1421/* this obviously also doesn't work when perl is embedded */
1422static void ecb_noinline ecb_cold
1423perlish_exit (pTHX)
1424{
1425 int exitstatus = perl_destruct (PL_curinterp);
1426 perl_free (PL_curinterp);
1427 exit (exitstatus);
1381} 1428}
1382 1429
1383/* 1430/*
1384 * this is a _very_ stripped down perl interpreter ;) 1431 * this is a _very_ stripped down perl interpreter ;)
1385 */ 1432 */
… …
1414 */ 1461 */
1415 1462
1416 /* 1463 /*
1417 * If perl-run returns we assume exit() was being called or the coro 1464 * If perl-run returns we assume exit() was being called or the coro
1418 * fell off the end, which seems to be the only valid (non-bug) 1465 * fell off the end, which seems to be the only valid (non-bug)
1419 * reason for perl_run to return. We try to exit by jumping to the 1466 * reason for perl_run to return. We try to mimic whatever perl is normally
1420 * bootstrap-time "top" top_env, as we cannot restore the "main" 1467 * doing in that case. YMMV.
1421 * coroutine as Coro has no such concept.
1422 * This actually isn't valid with the pthread backend, but OSes requiring
1423 * that backend are too broken to do it in a standards-compliant way.
1424 */ 1468 */
1425 PL_top_env = main_top_env; 1469 perlish_exit (aTHX);
1426 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1427 } 1470 }
1428} 1471}
1429 1472
1430static coro_cctx * 1473static coro_cctx *
1431cctx_new () 1474cctx_new (void)
1432{ 1475{
1433 coro_cctx *cctx; 1476 coro_cctx *cctx;
1434 1477
1435 ++cctx_count; 1478 ++cctx_count;
1436 New (0, cctx, 1, coro_cctx); 1479 New (0, cctx, 1, coro_cctx);
… …
1442 return cctx; 1485 return cctx;
1443} 1486}
1444 1487
1445/* create a new cctx only suitable as source */ 1488/* create a new cctx only suitable as source */
1446static coro_cctx * 1489static coro_cctx *
1447cctx_new_empty () 1490cctx_new_empty (void)
1448{ 1491{
1449 coro_cctx *cctx = cctx_new (); 1492 coro_cctx *cctx = cctx_new ();
1450 1493
1451 cctx->sptr = 0; 1494 cctx->sptr = 0;
1452 coro_create (&cctx->cctx, 0, 0, 0, 0); 1495 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1454 return cctx; 1497 return cctx;
1455} 1498}
1456 1499
1457/* create a new cctx suitable as destination/running a perl interpreter */ 1500/* create a new cctx suitable as destination/running a perl interpreter */
1458static coro_cctx * 1501static coro_cctx *
1459cctx_new_run () 1502cctx_new_run (void)
1460{ 1503{
1461 coro_cctx *cctx = cctx_new (); 1504 coro_cctx *cctx = cctx_new ();
1462 void *stack_start; 1505 void *stack_start;
1463 size_t stack_size; 1506 size_t stack_size;
1464 1507
1465#if HAVE_MMAP 1508#if HAVE_MMAP
1466 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1509 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1467 /* mmap supposedly does allocate-on-write for us */ 1510 /* mmap supposedly does allocate-on-write for us */
1468 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1511 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
1469 1512
1470 if (cctx->sptr != (void *)-1) 1513 if (cctx->sptr != (void *)-1)
1471 { 1514 {
1472 #if CORO_STACKGUARD 1515 #if CORO_STACKGUARD
1473 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1516 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1688 return; 1731 return;
1689 1732
1690 slf_destroy (aTHX_ coro); 1733 slf_destroy (aTHX_ coro);
1691 1734
1692 coro->flags |= CF_ZOMBIE; 1735 coro->flags |= CF_ZOMBIE;
1693 1736
1694 if (coro->flags & CF_READY) 1737 if (coro->flags & CF_READY)
1695 { 1738 {
1696 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1739 /* reduce nready, as destroying a ready coro effectively unreadies it */
1697 /* alternative: look through all ready queues and remove the coro */ 1740 /* alternative: look through all ready queues and remove the coro */
1698 --coro_nready; 1741 --coro_nready;
… …
1775 TRANSFER (ta, 1); 1818 TRANSFER (ta, 1);
1776} 1819}
1777 1820
1778/** Coro ********************************************************************/ 1821/** Coro ********************************************************************/
1779 1822
1780ECB_INLINE void 1823ecb_inline void
1781coro_enq (pTHX_ struct coro *coro) 1824coro_enq (pTHX_ struct coro *coro)
1782{ 1825{
1783 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1826 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1784 1827
1785 SvREFCNT_inc_NN (coro->hv); 1828 SvREFCNT_inc_NN (coro->hv);
… …
1787 coro->next_ready = 0; 1830 coro->next_ready = 0;
1788 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1831 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1789 ready [1] = coro; 1832 ready [1] = coro;
1790} 1833}
1791 1834
1792ECB_INLINE struct coro * 1835ecb_inline struct coro *
1793coro_deq (pTHX) 1836coro_deq (pTHX)
1794{ 1837{
1795 int prio; 1838 int prio;
1796 1839
1797 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1840 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1850{ 1893{
1851 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1894 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1852} 1895}
1853 1896
1854/* expects to own a reference to next->hv */ 1897/* expects to own a reference to next->hv */
1855ECB_INLINE void 1898ecb_inline void
1856prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1899prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1857{ 1900{
1858 SV *prev_sv = SvRV (coro_current); 1901 SV *prev_sv = SvRV (coro_current);
1859 1902
1860 ta->prev = SvSTATE_hv (prev_sv); 1903 ta->prev = SvSTATE_hv (prev_sv);
… …
1919 } 1962 }
1920 } 1963 }
1921 } 1964 }
1922} 1965}
1923 1966
1924ECB_INLINE void 1967ecb_inline void
1925prepare_cede (pTHX_ struct coro_transfer_args *ta) 1968prepare_cede (pTHX_ struct coro_transfer_args *ta)
1926{ 1969{
1927 api_ready (aTHX_ coro_current); 1970 api_ready (aTHX_ coro_current);
1928 prepare_schedule (aTHX_ ta); 1971 prepare_schedule (aTHX_ ta);
1929} 1972}
1930 1973
1931ECB_INLINE void 1974ecb_inline void
1932prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1975prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1933{ 1976{
1934 SV *prev = SvRV (coro_current); 1977 SV *prev = SvRV (coro_current);
1935 1978
1936 if (coro_nready) 1979 if (coro_nready)
… …
2131 2174
2132static void 2175static void
2133coro_set_status (pTHX_ struct coro *coro, SV **arg, int items) 2176coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2134{ 2177{
2135 AV *av; 2178 AV *av;
2136 2179
2137 if (coro->status) 2180 if (coro->status)
2138 { 2181 {
2139 av = coro->status; 2182 av = coro->status;
2140 av_clear (av); 2183 av_clear (av);
2141 } 2184 }
… …
2188 2231
2189 coro = SvSTATE (arg [0]); 2232 coro = SvSTATE (arg [0]);
2190 coro_hv = coro->hv; 2233 coro_hv = coro->hv;
2191 2234
2192 coro_set_status (aTHX_ coro, arg + 1, items - 1); 2235 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2193 2236
2194 if (ecb_expect_false (coro->flags & CF_NOCANCEL)) 2237 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2195 { 2238 {
2196 /* coro currently busy cancelling something, so just notify it */ 2239 /* coro currently busy cancelling something, so just notify it */
2197 coro->slf_frame.data = (void *)coro; 2240 coro->slf_frame.data = (void *)coro;
2198 2241
… …
2377 2420
2378static int 2421static int
2379slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2380{ 2423{
2381 SV *data = (SV *)frame->data; 2424 SV *data = (SV *)frame->data;
2382 2425
2383 if (CORO_THROW) 2426 if (CORO_THROW)
2384 return 0; 2427 return 0;
2385 2428
2386 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2387 return 1; 2430 return 1;
… …
2423 cb = sv_2mortal (coro->rouse_cb); 2466 cb = sv_2mortal (coro->rouse_cb);
2424 coro->rouse_cb = 0; 2467 coro->rouse_cb = 0;
2425 } 2468 }
2426 2469
2427 if (!SvROK (cb) 2470 if (!SvROK (cb)
2428 || SvTYPE (SvRV (cb)) != SVt_PVCV 2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
2429 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2430 croak ("Coro::rouse_wait called with illegal callback argument,"); 2473 croak ("Coro::rouse_wait called with illegal callback argument,");
2431 2474
2432 { 2475 {
2433 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2936 { 2979 {
2937 int i; 2980 int i;
2938 /* if we were woken up but can't down, we look through the whole */ 2981 /* if we were woken up but can't down, we look through the whole */
2939 /* waiters list and only add us if we aren't in there already */ 2982 /* waiters list and only add us if we aren't in there already */
2940 /* this avoids some degenerate memory usage cases */ 2983 /* this avoids some degenerate memory usage cases */
2941 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug 2984 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2942 if (AvARRAY (av)[i] == coro_hv) 2985 if (AvARRAY (av)[i] == coro_hv)
2943 return 1; 2986 return 1;
2944 2987
2945 av_push (av, SvREFCNT_inc (coro_hv)); 2988 av_push (av, SvREFCNT_inc (coro_hv));
2946 return 1; 2989 return 1;
… …
3323 3366
3324#ifndef __cplusplus 3367#ifndef __cplusplus
3325ecb_cold XS(boot_Coro__State); 3368ecb_cold XS(boot_Coro__State);
3326#endif 3369#endif
3327 3370
3371#if CORO_JIT
3372
3373static void ecb_noinline ecb_cold
3374pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3375{
3376 dSP;
3377 AV *av = newAV ();
3378
3379 av_store (av, 3, newSVuv (d));
3380 av_store (av, 2, newSVuv (c));
3381 av_store (av, 1, newSVuv (b));
3382 av_store (av, 0, newSVuv (a));
3383
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3385
3386 PUTBACK;
3387}
3388
3389static void ecb_noinline ecb_cold
3390jit_init (pTHX)
3391{
3392 dSP;
3393 SV *load, *save;
3394 char *map_base;
3395 char *load_ptr, *save_ptr;
3396 STRLEN load_len, save_len, map_len;
3397 int count;
3398
3399 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3400
3401 PUSHMARK (SP);
3402 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3403 #include "state.h"
3404 count = call_pv ("Coro::State::_jit", G_ARRAY);
3405 SPAGAIN;
3406
3407 save = POPs; save_ptr = SvPVbyte (save, save_len);
3408 load = POPs; load_ptr = SvPVbyte (load, load_len);
3409
3410 map_len = load_len + save_len + 16;
3411
3412 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3413
3414 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3415
3416 load_perl_slots = (load_save_perl_slots_type)map_base;
3417 memcpy (map_base, load_ptr, load_len);
3418
3419 map_base += (load_len + 15) & ~15;
3420
3421 save_perl_slots = (load_save_perl_slots_type)map_base;
3422 memcpy (map_base, save_ptr, save_len);
3423
3424 /* we are good citizens and try to make the page read-only, so the evil evil */
3425 /* hackers might have it a bit more difficult */
3426 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3427
3428 PUTBACK;
3429 eval_pv ("undef &Coro::State::_jit", 1);
3430}
3431
3432#endif
3433
3328MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3434MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
3329 3435
3330PROTOTYPES: DISABLE 3436PROTOTYPES: DISABLE
3331 3437
3332BOOT: 3438BOOT:
… …
3335# if CORO_PTHREAD 3441# if CORO_PTHREAD
3336 coro_thx = PERL_GET_CONTEXT; 3442 coro_thx = PERL_GET_CONTEXT;
3337# endif 3443# endif
3338#endif 3444#endif
3339 BOOT_PAGESIZE; 3445 BOOT_PAGESIZE;
3446
3447 /* perl defines these to check for existance first, but why it doesn't */
3448 /* just create them one at init time is not clear to me, except for */
3449 /* programs trying to delete them, but... */
3450 /* anyway, we declare this as invalid and make sure they are initialised here */
3451 DEFSV;
3452 ERRSV;
3340 3453
3341 cctx_current = cctx_new_empty (); 3454 cctx_current = cctx_new_empty ();
3342 3455
3343 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3456 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3344 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3457 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
3387 coroapi.prepare_cede_notself = prepare_cede_notself; 3500 coroapi.prepare_cede_notself = prepare_cede_notself;
3388 3501
3389 time_init (aTHX); 3502 time_init (aTHX);
3390 3503
3391 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3504 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3505#if CORO_JIT
3506 PUTBACK;
3507 jit_init (aTHX);
3508 SPAGAIN;
3509#endif
3392} 3510}
3393 3511
3394SV * 3512SV *
3395new (SV *klass, ...) 3513new (SV *klass, ...)
3396 ALIAS: 3514 ALIAS:
… …
3547 RETVAL = boolSV (coro->flags & ix); 3665 RETVAL = boolSV (coro->flags & ix);
3548 OUTPUT: 3666 OUTPUT:
3549 RETVAL 3667 RETVAL
3550 3668
3551void 3669void
3552throw (Coro::State self, SV *exception = &PL_sv_undef) 3670throw (SV *self, SV *exception = &PL_sv_undef)
3553 PROTOTYPE: $;$ 3671 PROTOTYPE: $;$
3554 CODE: 3672 CODE:
3555{ 3673{
3674 struct coro *coro = SvSTATE (self);
3556 struct coro *current = SvSTATE_current; 3675 struct coro *current = SvSTATE_current;
3557 SV **exceptionp = self == current ? &CORO_THROW : &self->except; 3676 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3558 SvREFCNT_dec (*exceptionp); 3677 SvREFCNT_dec (*exceptionp);
3559 SvGETMAGIC (exception); 3678 SvGETMAGIC (exception);
3560 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0; 3679 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3680
3681 api_ready (aTHX_ self);
3561} 3682}
3562 3683
3563void 3684void
3564api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3685api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3565 PROTOTYPE: $;$ 3686 PROTOTYPE: $;$
… …
3695 3816
3696 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3817 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3697 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3818 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3698 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3819 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3699 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ 3820 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3700 3821
3701 coro_stash = gv_stashpv ("Coro", TRUE); 3822 coro_stash = gv_stashpv ("Coro", TRUE);
3702 3823
3703 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 3824 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3704 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 3825 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3705 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); 3826 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
… …
4046} 4167}
4047 4168
4048MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4169MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4049 4170
4050void 4171void
4051_may_delete (SV *sem, int count, int extra_refs) 4172_may_delete (SV *sem, int count, unsigned int extra_refs)
4052 PPCODE: 4173 PPCODE:
4053{ 4174{
4054 AV *av = (AV *)SvRV (sem); 4175 AV *av = (AV *)SvRV (sem);
4055 4176
4056 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4177 if (SvREFCNT ((SV *)av) == 1 + extra_refs

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