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 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.321 by root, Sat Nov 22 02:09:54 2008 UTC

1#define CORO_CLONE 1 //D
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
… …
16 18
17#ifdef WIN32 19#ifdef WIN32
18# undef setjmp 20# undef setjmp
19# undef longjmp 21# undef longjmp
20# undef _exit 22# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 23# define setjmp _setjmp /* deep magic */
22#else 24#else
23# include <inttypes.h> /* most portable stdint.h */ 25# include <inttypes.h> /* most portable stdint.h */
24#endif 26#endif
25 27
26#ifdef HAVE_MMAP 28#ifdef HAVE_MMAP
… …
55 57
56#define PERL_VERSION_ATLEAST(a,b,c) \ 58#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 59 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 60 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 61 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 62 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 63
62#if !PERL_VERSION_ATLEAST (5,6,0) 64#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 65# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 66# define PL_ppaddr ppaddr
65# endif 67# endif
… …
95# define GV_NOTQUAL 0 97# define GV_NOTQUAL 0
96#endif 98#endif
97#ifndef newSV 99#ifndef newSV
98# define newSV(l) NEWSV(0,l) 100# define newSV(l) NEWSV(0,l)
99#endif 101#endif
102#ifndef CvISXSUB_on
103# define CvISXSUB_on(cv) (void)cv
104#endif
105#ifndef CvISXSUB
106# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
107#endif
108#ifndef Newx
109# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
110#endif
100 111
101/* 5.8.7 */ 112/* 5.8.7 */
102#ifndef SvRV_set 113#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 114# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 115#endif
… …
117#endif 128#endif
118 129
119/* The next macros try to return the current stack pointer, in an as 130/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 131 * portable way as possible. */
121#if __GNUC__ >= 4 132#if __GNUC__ >= 4
133# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 134# define STACKLEVEL __builtin_frame_address (0)
123#else 135#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 136# define dSTACKLEVEL volatile void *stacklevel
137# define STACKLEVEL ((void *)&stacklevel)
125#endif 138#endif
126 139
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 140#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 141
129#if __GNUC__ >= 3 142#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 153#define expect_true(expr) expect ((expr) != 0, 1)
141 154
142#define NOINLINE attribute ((noinline)) 155#define NOINLINE attribute ((noinline))
143 156
144#include "CoroAPI.h" 157#include "CoroAPI.h"
158#define GCoroAPI (&coroapi) /* very sneaky */
145 159
146#ifdef USE_ITHREADS 160#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 161# if CORO_PTHREAD
152static void *coro_thx; 162static void *coro_thx;
153# endif 163# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 164#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 165
177static double (*nvtime)(); /* so why doesn't it take void? */ 166static double (*nvtime)(); /* so why doesn't it take void? */
167
168/* we hijack an hopefully unused CV flag for our purposes */
169#define CVf_SLF 0x4000
170static OP *pp_slf (pTHX);
178 171
179static U32 cctx_gen; 172static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 173static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 174static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 175static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 176static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 177static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 178static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 179
180static AV *av_destroy; /* destruction queue */
181static SV *sv_manager; /* the manager coro */
187 182
188static GV *irsgv; /* $/ */ 183static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 184static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 185static SV *rv_diehook;
191static SV *rv_warnhook; 186static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 187static HV *hv_sig; /* %SIG */
193 188
194/* async_pool helper stuff */ 189/* async_pool helper stuff */
195static SV *sv_pool_rss; 190static SV *sv_pool_rss;
196static SV *sv_pool_size; 191static SV *sv_pool_size;
192static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 193static AV *av_async_pool; /* idle pool */
194static SV *sv_Coro; /* class string */
195static CV *cv_pool_handler;
196static CV *cv_coro_state_new;
198 197
199/* Coro::AnyEvent */ 198/* Coro::AnyEvent */
200static SV *sv_activity; 199static SV *sv_activity;
201 200
202static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
… …
252#undef VAR 251#undef VAR
253} perl_slots; 252} perl_slots;
254 253
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 254#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 255
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 256/* this is a structure representing a perl-level coroutine */
267struct coro { 257struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 258 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 259 coro_cctx *cctx;
270 260
271 /* process data */ 261 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 262 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 263 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 264 perl_slots *slot; /* basically the saved sp */
276 265
266 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 269 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 270 HV *hv; /* the perl hash associated with this coro, if any */
271 void (*on_destroy)(pTHX_ struct coro *coro);
281 272
282 /* statistics */ 273 /* statistics */
283 int usecount; /* number of transfers to this coro */ 274 int usecount; /* number of transfers to this coro */
284 275
285 /* coro process data */ 276 /* coro process data */
286 int prio; 277 int prio;
287 SV *throw; /* exception to be thrown */ 278 SV *except; /* exception to be thrown */
279 SV *rouse_cb;
288 280
289 /* async_pool */ 281 /* async_pool */
290 SV *saved_deffh; 282 SV *saved_deffh;
283 SV *invoke_cb;
284 AV *invoke_av;
291 285
292 /* linked list */ 286 /* linked list */
293 struct coro *next, *prev; 287 struct coro *next, *prev;
294}; 288};
295 289
296typedef struct coro *Coro__State; 290typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 291typedef struct coro *Coro__State_or_hashref;
298 292
293/* the following variables are effectively part of the perl context */
294/* and get copied between struct coro and these variables */
295/* the mainr easonw e don't support windows process emulation */
299static struct slf_frame slf_frame; /* the current slf frame */ 296static struct CoroSLF slf_frame; /* the current slf frame */
300 297
301/** Coro ********************************************************************/ 298/** Coro ********************************************************************/
302 299
303#define PRIO_MAX 3 300#define PRIO_MAX 3
304#define PRIO_HIGH 1 301#define PRIO_HIGH 1
… …
309 306
310/* for Coro.pm */ 307/* for Coro.pm */
311static SV *coro_current; 308static SV *coro_current;
312static SV *coro_readyhook; 309static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 310static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
311static CV *cv_coro_run, *cv_coro_terminate;
314static struct coro *coro_first; 312static struct coro *coro_first;
315#define coro_nready coroapi.nready 313#define coro_nready coroapi.nready
316 314
317/** lowlevel stuff **********************************************************/ 315/** lowlevel stuff **********************************************************/
318 316
… …
344 get_hv (name, create); 342 get_hv (name, create);
345#endif 343#endif
346 return get_hv (name, create); 344 return get_hv (name, create);
347} 345}
348 346
347/* may croak */
348INLINE CV *
349coro_sv_2cv (pTHX_ SV *sv)
350{
351 HV *st;
352 GV *gvp;
353 return sv_2cv (sv, &st, &gvp, 0);
354}
355
349static AV * 356static AV *
350coro_clone_padlist (pTHX_ CV *cv) 357coro_derive_padlist (pTHX_ CV *cv)
351{ 358{
352 AV *padlist = CvPADLIST (cv); 359 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 360 AV *newpadlist, *newpad;
354 361
355 newpadlist = newAV (); 362 newpadlist = newAV ();
… …
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 412 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 413
407 return 0; 414 return 0;
408} 415}
409 416
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext 417#define CORO_MAGIC_type_cv 26
411#define CORO_MAGIC_type_state PERL_MAGIC_ext 418#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 419
413static MGVTBL coro_cv_vtbl = { 420static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 421 0, 0, 0, 0,
415 coro_cv_free 422 coro_cv_free
416}; 423};
417 424
425#define CORO_MAGIC_NN(sv, type) \
426 (expect_true (SvMAGIC (sv)->mg_type == type) \
427 ? SvMAGIC (sv) \
428 : mg_find (sv, type))
429
418#define CORO_MAGIC(sv, type) \ 430#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \ 431 (expect_true (SvMAGIC (sv)) \
420 ? SvMAGIC (sv)->mg_type == type \ 432 ? CORO_MAGIC_NN (sv, type) \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0 433 : 0)
424 434
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 435#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 436#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
427 437
428INLINE struct coro * 438INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro) 439SvSTATE_ (pTHX_ SV *coro)
430{ 440{
431 HV *stash; 441 HV *stash;
… …
448 mg = CORO_MAGIC_state (coro); 458 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr; 459 return (struct coro *)mg->mg_ptr;
450} 460}
451 461
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 462#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
463
464/* faster than SvSTATE, but expects a coroutine hv */
465#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
466#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
453 467
454/* the next two functions merely cache the padlists */ 468/* the next two functions merely cache the padlists */
455static void 469static void
456get_padlist (pTHX_ CV *cv) 470get_padlist (pTHX_ CV *cv)
457{ 471{
… …
463 else 477 else
464 { 478 {
465#if CORO_PREFER_PERL_FUNCTIONS 479#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 480 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 481 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 482 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 483 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 484 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 485 SvREFCNT_dec (cp);
472#else 486#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 487 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 488#endif
475 } 489 }
476} 490}
477 491
478static void 492static void
… …
525 } 539 }
526 540
527 PUTBACK; 541 PUTBACK;
528 } 542 }
529 543
530 slf_frame = c->slf_frame; 544 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 545 CORO_THROW = c->except;
532} 546}
533 547
534static void 548static void
535save_perl (pTHX_ Coro__State c) 549save_perl (pTHX_ Coro__State c)
536{ 550{
537 c->slf_data = coroapi.slf_data; 551 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 552 c->slf_frame = slf_frame;
539 553
540 { 554 {
541 dSP; 555 dSP;
542 I32 cxix = cxstack_ix; 556 I32 cxix = cxstack_ix;
… …
617 * of perl.c:init_stacks, except that it uses less memory 631 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 632 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 633 * not usually need a lot of stackspace.
620 */ 634 */
621#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 636# define coro_init_stacks(thx) init_stacks ()
623#else 637#else
624static void 638static void
625coro_init_stacks (pTHX) 639coro_init_stacks (pTHX)
626{ 640{
627 PL_curstackinfo = new_stackinfo(32, 8); 641 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 704#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 705 Safefree (PL_retstack);
692#endif 706#endif
693} 707}
694 708
709#define CORO_RSS \
710 rss += sizeof (SYM (curstackinfo)); \
711 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
713 rss += SYM (tmps_max) * sizeof (SV *); \
714 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
715 rss += SYM (scopestack_max) * sizeof (I32); \
716 rss += SYM (savestack_max) * sizeof (ANY);
717
695static size_t 718static size_t
696coro_rss (pTHX_ struct coro *coro) 719coro_rss (pTHX_ struct coro *coro)
697{ 720{
698 size_t rss = sizeof (*coro); 721 size_t rss = sizeof (*coro);
699 722
700 if (coro->mainstack) 723 if (coro->mainstack)
701 { 724 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 725 if (coro->flags & CF_RUNNING)
706 { 726 {
707 slot = &tmp_slot; 727 #define SYM(sym) PL_ ## sym
708 728 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 729 #undef SYM
712 } 730 }
713 else 731 else
714 slot = coro->slot;
715
716 if (slot)
717 { 732 {
718 rss += sizeof (slot->curstackinfo); 733 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 734 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 735 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 736 }
730 } 737 }
731 738
732 return rss; 739 return rss;
733} 740}
… …
823 830
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 831 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 832}
826 833
827static void 834static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 835prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 836{
830 /* kind of mega-hacky, but works */ 837 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 838 ta->next = ta->prev = (struct coro *)ta;
832} 839}
833 840
834static int 841static int
835slf_check_nop (aTHX) 842slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 843{
837 return 0; 844 return 0;
838} 845}
839 846
840static void 847static int
848slf_check_repeat (pTHX_ struct CoroSLF *frame)
849{
850 return 1;
851}
852
853static UNOP coro_setup_op;
854
855static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 856coro_setup (pTHX_ struct coro *coro)
842{ 857{
843 /* 858 /*
844 * emulate part of the perl startup here. 859 * emulate part of the perl startup here.
845 */ 860 */
… …
872 { 887 {
873 dSP; 888 dSP;
874 UNOP myop; 889 UNOP myop;
875 890
876 Zero (&myop, 1, UNOP); 891 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 892 myop.op_next = Nullop;
893 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 894 myop.op_flags = OPf_WANT_VOID;
879 895
880 PUSHMARK (SP); 896 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 897 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 898 PUTBACK;
883 PL_op = (OP *)&myop; 899 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 900 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 901 }
887 902
888 /* this newly created coroutine might be run on an existing cctx which most 903 /* this newly created coroutine might be run on an existing cctx which most
889 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 904 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890 */ 905 */
891 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 906 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 907 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
908
909 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
910 coro_setup_op.op_next = PL_op;
911 coro_setup_op.op_type = OP_ENTERSUB;
912 coro_setup_op.op_ppaddr = pp_slf;
913 /* no flags etc. required, as an init function won't be called */
914
915 PL_op = (OP *)&coro_setup_op;
916
917 /* copy throw, in case it was set before coro_setup */
918 CORO_THROW = coro->except;
893} 919}
894 920
895static void 921static void
896coro_destruct (pTHX_ struct coro *coro) 922coro_destruct (pTHX_ struct coro *coro)
897{ 923{
… …
921 947
922 SvREFCNT_dec (PL_diehook); 948 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook); 949 SvREFCNT_dec (PL_warnhook);
924 950
925 SvREFCNT_dec (coro->saved_deffh); 951 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 952 SvREFCNT_dec (coro->rouse_cb);
953 SvREFCNT_dec (coro->invoke_cb);
954 SvREFCNT_dec (coro->invoke_av);
927 955
928 coro_destruct_stacks (aTHX); 956 coro_destruct_stacks (aTHX);
929} 957}
930 958
931INLINE void 959INLINE void
… …
941static int 969static int
942runops_trace (pTHX) 970runops_trace (pTHX)
943{ 971{
944 COP *oldcop = 0; 972 COP *oldcop = 0;
945 int oldcxix = -2; 973 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 974 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx; 975 coro_cctx *cctx = coro->cctx;
948 976
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 978 {
951 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
… …
1003 { 1031 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1033
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1035 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1036 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
1012 1039
1013 if (isGV (gv)) 1040 if (isGV (gv))
… …
1018 SAVETMPS; 1045 SAVETMPS;
1019 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1047 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1049 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1051 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1054 SPAGAIN;
1028 FREETMPS; 1055 FREETMPS;
… …
1060 1087
1061 TAINT_NOT; 1088 TAINT_NOT;
1062 return 0; 1089 return 0;
1063} 1090}
1064 1091
1092static struct coro_cctx *cctx_ssl_cctx;
1093static struct CoroSLF cctx_ssl_frame;
1094
1065static void 1095static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1097{
1068 ta->prev = (struct coro *)cctx; 1098 ta->prev = (struct coro *)cctx_ssl_cctx;
1069 ta->next = 0; 1099 ta->next = 0;
1070} 1100}
1071 1101
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1103slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1104{
1075/* also initialises PL_top_env */ 1105 *frame = cctx_ssl_frame;
1106
1107 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1108}
1109
1110/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1111static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1112cctx_prepare (pTHX_ coro_cctx *cctx)
1078{ 1113{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1114 PL_top_env = &PL_start_env;
1083 1115
1084 if (cctx->flags & CC_TRACE) 1116 if (cctx->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1117 PL_runops = runops_trace;
1086 1118
1087 Zero (&myop, 1, UNOP); 1119 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1120 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1121 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1122 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1123
1091 PUSHMARK (SP); 1124 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1125 cctx_ssl_cctx = cctx;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1126 cctx_ssl_frame = slf_frame;
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1127
1095 PUTBACK; 1128 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 PL_op = (OP *)&myop; 1129 slf_frame.check = slf_check_set_stacklevel;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1130}
1100 1131
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1132/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1133INLINE void
1103transfer_tail (pTHX) 1134transfer_tail (pTHX)
1104{ 1135{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1136 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1137}
1121 1138
1122/* 1139/*
1123 * this is a _very_ stripped down perl interpreter ;) 1140 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1141 */
… …
1139 1156
1140 /* inject a fake subroutine call to cctx_init */ 1157 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1158 cctx_prepare (aTHX_ (coro_cctx *)arg);
1142 1159
1143 /* cctx_run is the alternative tail of transfer() */ 1160 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1161 transfer_tail (aTHX);
1146 1162
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1163 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1164 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1165 perl_run (PL_curinterp);
1166 /*
1167 * Unfortunately, there is no way to get at the return values of the
1168 * coro body here, as perl_run destroys these
1169 */
1150 1170
1151 /* 1171 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1172 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1173 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1174 * reason for perl_run to return. We try to exit by jumping to the
… …
1305/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1306 1326
1307static void 1327static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1310 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1311 { 1333 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1335 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1336
1315 if (expect_false (next->flags & CF_RUNNING)) 1337 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1339
1318 if (expect_false (next->flags & CF_DESTROYED)) 1340 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1342
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1343#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1344 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1346#endif
1325 } 1347 }
1326} 1348}
1327 1349
1328/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1329static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1353{
1332 dSTACKLEVEL; 1354 dSTACKLEVEL;
1333 1355
1334 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1357 if (expect_false (!next))
1336 { 1358 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1359 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1361 }
1340 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1341 { 1363 {
1342 coro_cctx *prev__cctx; 1364 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1371 prev->flags |= CF_RUNNING;
1350 } 1372 }
1351 1373
1352 prev->flags &= ~CF_RUNNING; 1374 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1375 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1376
1357 /* first get rid of the old state */ 1377 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1378 save_perl (aTHX_ prev);
1359 1379
1360 if (expect_false (next->flags & CF_NEW)) 1380 if (expect_false (next->flags & CF_NEW))
… …
1369 1389
1370 prev__cctx = prev->cctx; 1390 prev__cctx = prev->cctx;
1371 1391
1372 /* possibly untie and reuse the cctx */ 1392 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1393 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1394 prev__cctx->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1395 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1396 && !force_cctx
1377 )) 1397 ))
1378 { 1398 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1399 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1413 ++next->usecount;
1394 1414
1395 if (expect_true (!next->cctx)) 1415 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1397 1417
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
1401 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (prev__cctx != next->cctx))
1402 { 1419 {
1403 prev__cctx->top_env = PL_top_env; 1420 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1421 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1436{
1420 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1421 return 0; 1438 return 0;
1422 1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1442
1423 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1424 1444
1425 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1426 { 1446 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1449 --coro_nready;
1431 UNLOCK;
1432 } 1450 }
1433 else 1451 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1453
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1455 {
1438 struct coro temp; 1456 struct coro temp;
1439 1457
1440 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1459
1443 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1445 1462
1446 coro_destruct (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
… …
1449 1466
1450 coro->slot = 0; 1467 coro->slot = 0;
1451 } 1468 }
1452 1469
1453 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1455 1474
1456 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1459 1478
… …
1513 1532
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1516} 1535}
1517 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1518/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1519 1561
1520static void 1562INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1522{ 1564{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1566}
1525 1567
1526static SV * 1568INLINE SV *
1527coro_deq (pTHX) 1569coro_deq (pTHX)
1528{ 1570{
1529 int prio; 1571 int prio;
1530 1572
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1550 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1551 return 0; 1593 return 0;
1552 1594
1553 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1554 1596
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1599
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1600 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1601 ++coro_nready;
1562 1602
1563 UNLOCK;
1564
1565 if (sv_hook) 1603 if (sv_hook)
1566 { 1604 {
1567 dSP; 1605 dSP;
1568 1606
1569 ENTER; 1607 ENTER;
1570 SAVETMPS; 1608 SAVETMPS;
1571 1609
1572 PUSHMARK (SP); 1610 PUSHMARK (SP);
1573 PUTBACK; 1611 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1613
1577 FREETMPS; 1614 FREETMPS;
1578 LEAVE; 1615 LEAVE;
1579 } 1616 }
1580 1617
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1589{ 1626{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1628}
1592 1629
1630/* expects to own a reference to next->hv */
1593INLINE void 1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1647static void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1595{ 1649{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;) 1650 for (;;)
1599 { 1651 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1602 1653
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1605 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1606 dSP; 1673 dSP;
1607 UNLOCK;
1608 1674
1609 ENTER; 1675 ENTER;
1610 SAVETMPS; 1676 SAVETMPS;
1611 1677
1612 PUSHMARK (SP); 1678 PUSHMARK (SP);
1613 PUTBACK; 1679 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1615 SPAGAIN;
1616 1681
1617 FREETMPS; 1682 FREETMPS;
1618 LEAVE; 1683 LEAVE;
1619 continue;
1620 } 1684 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 } 1685 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv);
1641 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv);
1645
1646 LOCK;
1647 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv;
1649 UNLOCK;
1650} 1686}
1651 1687
1652INLINE void 1688INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1690{
… …
1675{ 1711{
1676 struct coro_transfer_args ta; 1712 struct coro_transfer_args ta;
1677 1713
1678 prepare_schedule (aTHX_ &ta); 1714 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1680} 1726}
1681 1727
1682static int 1728static int
1683api_cede (pTHX) 1729api_cede (pTHX)
1684{ 1730{
… …
1718 if (flags & CC_TRACE) 1764 if (flags & CC_TRACE)
1719 { 1765 {
1720 if (!coro->cctx) 1766 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1767 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1768 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1769 croak ("cannot enable tracing on coroutine with custom stack,");
1724 1770
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1771 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1772 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1773 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1774 {
… …
1733 else 1779 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1780 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1781 }
1736} 1782}
1737 1783
1738#if 0 1784static void
1785coro_call_on_destroy (pTHX_ struct coro *coro)
1786{
1787 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1788 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1789
1790 if (on_destroyp)
1791 {
1792 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1793
1794 while (AvFILLp (on_destroy) >= 0)
1795 {
1796 dSP; /* don't disturb outer sp */
1797 SV *cb = av_pop (on_destroy);
1798
1799 PUSHMARK (SP);
1800
1801 if (statusp)
1802 {
1803 int i;
1804 AV *status = (AV *)SvRV (*statusp);
1805 EXTEND (SP, AvFILLp (status) + 1);
1806
1807 for (i = 0; i <= AvFILLp (status); ++i)
1808 PUSHs (AvARRAY (status)[i]);
1809 }
1810
1811 PUTBACK;
1812 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1813 }
1814 }
1815}
1816
1817static void
1818slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1819{
1820 int i;
1821 HV *hv = (HV *)SvRV (coro_current);
1822 AV *av = newAV ();
1823
1824 av_extend (av, items - 1);
1825 for (i = 0; i < items; ++i)
1826 av_push (av, SvREFCNT_inc_NN (arg [i]));
1827
1828 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1829
1830 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1831 api_ready (aTHX_ sv_manager);
1832
1833 frame->prepare = prepare_schedule;
1834 frame->check = slf_check_repeat;
1835}
1836
1837/*****************************************************************************/
1838/* async pool handler */
1839
1739static int 1840static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1841slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1842{
1742 AV *padlist; 1843 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1844 struct coro *coro = (struct coro *)frame->data;
1744 1845
1745 abort (); 1846 if (!coro->invoke_cb)
1847 return 1; /* loop till we have invoke */
1848 else
1849 {
1850 hv_store (hv, "desc", sizeof ("desc") - 1,
1851 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1852
1853 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1854
1855 {
1856 dSP;
1857 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1858 PUTBACK;
1859 }
1860
1861 SvREFCNT_dec (GvAV (PL_defgv));
1862 GvAV (PL_defgv) = coro->invoke_av;
1863 coro->invoke_av = 0;
1864
1865 return 0;
1866 }
1867}
1868
1869static void
1870slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1871{
1872 HV *hv = (HV *)SvRV (coro_current);
1873 struct coro *coro = SvSTATE_hv ((SV *)hv);
1874
1875 if (expect_true (coro->saved_deffh))
1876 {
1877 /* subsequent iteration */
1878 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1879 coro->saved_deffh = 0;
1880
1881 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1882 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1883 {
1884 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1885 coro->invoke_av = newAV ();
1886
1887 frame->prepare = prepare_nop;
1888 }
1889 else
1890 {
1891 av_clear (GvAV (PL_defgv));
1892 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1893
1894 coro->prio = 0;
1895
1896 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1897 api_trace (aTHX_ coro_current, 0);
1898
1899 frame->prepare = prepare_schedule;
1900 av_push (av_async_pool, SvREFCNT_inc (hv));
1901 }
1902 }
1903 else
1904 {
1905 /* first iteration, simply fall through */
1906 frame->prepare = prepare_nop;
1907 }
1908
1909 frame->check = slf_check_pool_handler;
1910 frame->data = (void *)coro;
1911}
1912
1913/*****************************************************************************/
1914/* rouse callback */
1915
1916#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1917
1918static void
1919coro_rouse_callback (pTHX_ CV *cv)
1920{
1921 dXSARGS;
1922 SV *data = (SV *)GENSUB_ARG;
1923
1924 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1925 {
1926 /* first call, set args */
1927 AV *av = newAV ();
1928 SV *coro = SvRV (data);
1929
1930 SvRV_set (data, (SV *)av);
1931 api_ready (aTHX_ coro);
1932 SvREFCNT_dec (coro);
1933
1934 /* better take a full copy of the arguments */
1935 while (items--)
1936 av_store (av, items, newSVsv (ST (items)));
1937 }
1938
1939 XSRETURN_EMPTY;
1940}
1941
1942static int
1943slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1944{
1945 SV *data = (SV *)frame->data;
1946
1947 if (CORO_THROW)
1948 return 0;
1949
1950 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1951 return 1;
1952
1953 /* now push all results on the stack */
1954 {
1955 dSP;
1956 AV *av = (AV *)SvRV (data);
1957 int i;
1958
1959 EXTEND (SP, AvFILLp (av) + 1);
1960 for (i = 0; i <= AvFILLp (av); ++i)
1961 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1962
1963 /* we have stolen the elements, so ste length to zero and free */
1964 AvFILLp (av) = -1;
1965 av_undef (av);
1966
1967 PUTBACK;
1968 }
1746 1969
1747 return 0; 1970 return 0;
1748} 1971}
1749 1972
1750static MGVTBL coro_gensub_vtbl = { 1973static void
1751 0, 0, 0, 0, 1974slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1975{
1753}; 1976 SV *cb;
1754#endif 1977
1978 if (items)
1979 cb = arg [0];
1980 else
1981 {
1982 struct coro *coro = SvSTATE_current;
1983
1984 if (!coro->rouse_cb)
1985 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1986
1987 cb = sv_2mortal (coro->rouse_cb);
1988 coro->rouse_cb = 0;
1989 }
1990
1991 if (!SvROK (cb)
1992 || SvTYPE (SvRV (cb)) != SVt_PVCV
1993 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1994 croak ("Coro::rouse_wait called with illegal callback argument,");
1995
1996 {
1997 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1998 SV *data = (SV *)GENSUB_ARG;
1999
2000 frame->data = (void *)data;
2001 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2002 frame->check = slf_check_rouse_wait;
2003 }
2004}
2005
2006static SV *
2007coro_new_rouse_cb (pTHX)
2008{
2009 HV *hv = (HV *)SvRV (coro_current);
2010 struct coro *coro = SvSTATE_hv (hv);
2011 SV *data = newRV_inc ((SV *)hv);
2012 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2013
2014 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2015 SvREFCNT_dec (data); /* magicext increases the refcount */
2016
2017 SvREFCNT_dec (coro->rouse_cb);
2018 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2019
2020 return cb;
2021}
2022
2023/*****************************************************************************/
2024/* schedule-like-function opcode (SLF) */
2025
2026static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2027static const CV *slf_cv;
2028static SV **slf_argv;
2029static int slf_argc, slf_arga; /* count, allocated */
2030static I32 slf_ax; /* top of stack, for restore */
2031
2032/* this restores the stack in the case we patched the entersub, to */
2033/* recreate the stack frame as perl will on following calls */
2034/* since entersub cleared the stack */
2035static OP *
2036pp_restore (pTHX)
2037{
2038 int i;
2039 SV **SP = PL_stack_base + slf_ax;
2040
2041 PUSHMARK (SP);
2042
2043 EXTEND (SP, slf_argc + 1);
2044
2045 for (i = 0; i < slf_argc; ++i)
2046 PUSHs (sv_2mortal (slf_argv [i]));
2047
2048 PUSHs ((SV *)CvGV (slf_cv));
2049
2050 RETURNOP (slf_restore.op_first);
2051}
2052
2053static void
2054slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2055{
2056 SV **arg = (SV **)slf_frame.data;
2057
2058 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2059}
2060
2061static void
2062slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2063{
2064 if (items != 2)
2065 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2066
2067 frame->prepare = slf_prepare_transfer;
2068 frame->check = slf_check_nop;
2069 frame->data = (void *)arg; /* let's hope it will stay valid */
2070}
2071
2072static void
2073slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 frame->prepare = prepare_schedule;
2076 frame->check = slf_check_nop;
2077}
2078
2079static void
2080slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2081{
2082 struct coro *next = (struct coro *)slf_frame.data;
2083
2084 SvREFCNT_inc_NN (next->hv);
2085 prepare_schedule_to (aTHX_ ta, next);
2086}
2087
2088static void
2089slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2090{
2091 if (!items)
2092 croak ("Coro::schedule_to expects a coroutine argument, caught");
2093
2094 frame->data = (void *)SvSTATE (arg [0]);
2095 frame->prepare = slf_prepare_schedule_to;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 api_ready (aTHX_ SvRV (coro_current));
2103
2104 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2105}
2106
2107static void
2108slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2109{
2110 frame->prepare = prepare_cede;
2111 frame->check = slf_check_nop;
2112}
2113
2114static void
2115slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2116{
2117 frame->prepare = prepare_cede_notself;
2118 frame->check = slf_check_nop;
2119}
2120
2121/*
2122 * these not obviously related functions are all rolled into one
2123 * function to increase chances that they all will call transfer with the same
2124 * stack offset
2125 * SLF stands for "schedule-like-function".
2126 */
2127static OP *
2128pp_slf (pTHX)
2129{
2130 I32 checkmark; /* mark SP to see how many elements check has pushed */
2131
2132 /* set up the slf frame, unless it has already been set-up */
2133 /* the latter happens when a new coro has been started */
2134 /* or when a new cctx was attached to an existing coroutine */
2135 if (expect_true (!slf_frame.prepare))
2136 {
2137 /* first iteration */
2138 dSP;
2139 SV **arg = PL_stack_base + TOPMARK + 1;
2140 int items = SP - arg; /* args without function object */
2141 SV *gv = *sp;
2142
2143 /* do a quick consistency check on the "function" object, and if it isn't */
2144 /* for us, divert to the real entersub */
2145 if (SvTYPE (gv) != SVt_PVGV
2146 || !GvCV (gv)
2147 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2148 return PL_ppaddr[OP_ENTERSUB](aTHX);
2149
2150 if (!(PL_op->op_flags & OPf_STACKED))
2151 {
2152 /* ampersand-form of call, use @_ instead of stack */
2153 AV *av = GvAV (PL_defgv);
2154 arg = AvARRAY (av);
2155 items = AvFILLp (av) + 1;
2156 }
2157
2158 /* now call the init function, which needs to set up slf_frame */
2159 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2160 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2161
2162 /* pop args */
2163 SP = PL_stack_base + POPMARK;
2164
2165 PUTBACK;
2166 }
2167
2168 /* now that we have a slf_frame, interpret it! */
2169 /* we use a callback system not to make the code needlessly */
2170 /* complicated, but so we can run multiple perl coros from one cctx */
2171
2172 do
2173 {
2174 struct coro_transfer_args ta;
2175
2176 slf_frame.prepare (aTHX_ &ta);
2177 TRANSFER (ta, 0);
2178
2179 checkmark = PL_stack_sp - PL_stack_base;
2180 }
2181 while (slf_frame.check (aTHX_ &slf_frame));
2182
2183 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2184
2185 /* exception handling */
2186 if (expect_false (CORO_THROW))
2187 {
2188 SV *exception = sv_2mortal (CORO_THROW);
2189
2190 CORO_THROW = 0;
2191 sv_setsv (ERRSV, exception);
2192 croak (0);
2193 }
2194
2195 /* return value handling - mostly like entersub */
2196 /* make sure we put something on the stack in scalar context */
2197 if (GIMME_V == G_SCALAR)
2198 {
2199 dSP;
2200 SV **bot = PL_stack_base + checkmark;
2201
2202 if (sp == bot) /* too few, push undef */
2203 bot [1] = &PL_sv_undef;
2204 else if (sp != bot + 1) /* too many, take last one */
2205 bot [1] = *sp;
2206
2207 SP = bot + 1;
2208
2209 PUTBACK;
2210 }
2211
2212 return NORMAL;
2213}
2214
2215static void
2216api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2217{
2218 int i;
2219 SV **arg = PL_stack_base + ax;
2220 int items = PL_stack_sp - arg + 1;
2221
2222 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2223
2224 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2225 && PL_op->op_ppaddr != pp_slf)
2226 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2227
2228 CvFLAGS (cv) |= CVf_SLF;
2229 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2230 slf_cv = cv;
2231
2232 /* we patch the op, and then re-run the whole call */
2233 /* we have to put the same argument on the stack for this to work */
2234 /* and this will be done by pp_restore */
2235 slf_restore.op_next = (OP *)&slf_restore;
2236 slf_restore.op_type = OP_CUSTOM;
2237 slf_restore.op_ppaddr = pp_restore;
2238 slf_restore.op_first = PL_op;
2239
2240 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2241
2242 if (PL_op->op_flags & OPf_STACKED)
2243 {
2244 if (items > slf_arga)
2245 {
2246 slf_arga = items;
2247 free (slf_argv);
2248 slf_argv = malloc (slf_arga * sizeof (SV *));
2249 }
2250
2251 slf_argc = items;
2252
2253 for (i = 0; i < items; ++i)
2254 slf_argv [i] = SvREFCNT_inc (arg [i]);
2255 }
2256 else
2257 slf_argc = 0;
2258
2259 PL_op->op_ppaddr = pp_slf;
2260 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2261
2262 PL_op = (OP *)&slf_restore;
2263}
1755 2264
1756/*****************************************************************************/ 2265/*****************************************************************************/
1757/* PerlIO::cede */ 2266/* PerlIO::cede */
1758 2267
1759typedef struct 2268typedef struct
… …
1827 PerlIOBuf_get_cnt, 2336 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2337 PerlIOBuf_set_ptrcnt,
1829}; 2338};
1830 2339
1831/*****************************************************************************/ 2340/*****************************************************************************/
2341/* Coro::Semaphore & Coro::Signal */
1832 2342
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2343static SV *
1843pp_restore (pTHX) 2344coro_waitarray_new (pTHX_ int count)
1844{ 2345{
1845 dSP; 2346 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2347 AV *av = newAV ();
2348 SV **ary;
1846 2349
1847 PUSHMARK (SP); 2350 /* unfortunately, building manually saves memory */
2351 Newx (ary, 2, SV *);
2352 AvALLOC (av) = ary;
2353 /*AvARRAY (av) = ary;*/
2354 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2355 AvMAX (av) = 1;
2356 AvFILLp (av) = 0;
2357 ary [0] = newSViv (count);
1848 2358
1849 EXTEND (SP, 3); 2359 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2360}
1856 2361
1857static void 2362/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2363
1864static void 2364static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2365coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2366{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2367 SV *count_sv = AvARRAY (av)[0];
1868} 2368 IV count = SvIVX (count_sv);
1869 2369
1870static void 2370 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2371 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2372
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2373 /* now wake up as many waiters as are expected to lock */
1877} 2374 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2375 {
1912 /* first iteration */ 2376 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2377
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2378 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2379 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2380 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2381 cb = av_shift (av);
1923 2382
1924 /* pop args */ 2383 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2384 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2385 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2386 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2387 }
1934 2388 else if (SvTYPE (cb) == SVt_PVCV)
2389 {
2390 dSP;
2391 PUSHMARK (SP);
2392 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2393 PUTBACK;
2394 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2395 }
1936 2396
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2397 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2398 }
1949 struct coro_transfer_args ta; 2399}
1950 2400
1951 slf_frame.prepare (aTHX_ &ta); 2401static void
1952 TRANSFER (ta, 0); 2402coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2403{
2404 /* call $sem->adjust (0) to possibly wake up some other waiters */
2405 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2406}
1953 2407
1954 checkmark = PL_stack_sp - PL_stack_base; 2408static int
2409slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2410{
2411 AV *av = (AV *)frame->data;
2412 SV *count_sv = AvARRAY (av)[0];
2413
2414 /* if we are about to throw, don't actually acquire the lock, just throw */
2415 if (CORO_THROW)
2416 return 0;
2417 else if (SvIVX (count_sv) > 0)
1955 } 2418 {
1956 while (slf_frame.check (aTHX)); 2419 SvSTATE_current->on_destroy = 0;
1957 2420
2421 if (acquire)
2422 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2423 else
2424 coro_semaphore_adjust (aTHX_ av, 0);
2425
2426 return 0;
2427 }
2428 else
2429 {
2430 int i;
2431 /* if we were woken up but can't down, we look through the whole */
2432 /* waiters list and only add us if we aren't in there already */
2433 /* this avoids some degenerate memory usage cases */
2434
2435 for (i = 1; i <= AvFILLp (av); ++i)
2436 if (AvARRAY (av)[i] == SvRV (coro_current))
2437 return 1;
2438
2439 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2440 return 1;
2441 }
2442}
2443
2444static int
2445slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2446{
2447 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2448}
2449
2450static int
2451slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2452{
2453 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2454}
2455
2456static void
2457slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2458{
2459 AV *av = (AV *)SvRV (arg [0]);
2460
2461 if (SvIVX (AvARRAY (av)[0]) > 0)
2462 {
2463 frame->data = (void *)av;
2464 frame->prepare = prepare_nop;
2465 }
2466 else
2467 {
2468 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2469
2470 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2471 frame->prepare = prepare_schedule;
2472
2473 /* to avoid race conditions when a woken-up coro gets terminated */
2474 /* we arrange for a temporary on_destroy that calls adjust (0) */
2475 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2476 }
2477}
2478
2479static void
2480slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2481{
2482 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2483 frame->check = slf_check_semaphore_down;
2484}
2485
2486static void
2487slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2488{
2489 if (items >= 2)
2490 {
2491 /* callback form */
2492 AV *av = (AV *)SvRV (arg [0]);
2493 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2494
2495 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2496
2497 if (SvIVX (AvARRAY (av)[0]) > 0)
2498 coro_semaphore_adjust (aTHX_ av, 0);
2499
2500 frame->prepare = prepare_nop;
2501 frame->check = slf_check_nop;
2502 }
2503 else
2504 {
2505 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2506 frame->check = slf_check_semaphore_wait;
2507 }
2508}
2509
2510/* signal */
2511
2512static void
2513coro_signal_wake (pTHX_ AV *av, int count)
2514{
2515 SvIVX (AvARRAY (av)[0]) = 0;
2516
2517 /* now signal count waiters */
2518 while (count > 0 && AvFILLp (av) > 0)
2519 {
2520 SV *cb;
2521
2522 /* swap first two elements so we can shift a waiter */
2523 cb = AvARRAY (av)[0];
2524 AvARRAY (av)[0] = AvARRAY (av)[1];
2525 AvARRAY (av)[1] = cb;
2526
2527 cb = av_shift (av);
2528
2529 api_ready (aTHX_ cb);
2530 sv_setiv (cb, 0); /* signal waiter */
2531 SvREFCNT_dec (cb);
2532
2533 --count;
2534 }
2535}
2536
2537static int
2538slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2539{
2540 /* if we are about to throw, also stop waiting */
2541 return SvROK ((SV *)frame->data) && !CORO_THROW;
2542}
2543
2544static void
2545slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{
2547 AV *av = (AV *)SvRV (arg [0]);
2548
2549 if (SvIVX (AvARRAY (av)[0]))
2550 {
2551 SvIVX (AvARRAY (av)[0]) = 0;
2552 frame->prepare = prepare_nop;
2553 frame->check = slf_check_nop;
2554 }
2555 else
2556 {
2557 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2558
2559 av_push (av, waiter);
2560
2561 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2562 frame->prepare = prepare_schedule;
2563 frame->check = slf_check_signal_wait;
2564 }
2565}
2566
2567/*****************************************************************************/
2568/* Coro::AIO */
2569
2570#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2571
2572/* helper storage struct */
2573struct io_state
2574{
2575 int errorno;
2576 I32 laststype; /* U16 in 5.10.0 */
2577 int laststatval;
2578 Stat_t statcache;
2579};
2580
2581static void
2582coro_aio_callback (pTHX_ CV *cv)
2583{
2584 dXSARGS;
2585 AV *state = (AV *)GENSUB_ARG;
2586 SV *coro = av_pop (state);
2587 SV *data_sv = newSV (sizeof (struct io_state));
2588
2589 av_extend (state, items - 1);
2590
2591 sv_upgrade (data_sv, SVt_PV);
2592 SvCUR_set (data_sv, sizeof (struct io_state));
2593 SvPOK_only (data_sv);
2594
2595 {
2596 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2597
2598 data->errorno = errno;
2599 data->laststype = PL_laststype;
2600 data->laststatval = PL_laststatval;
2601 data->statcache = PL_statcache;
2602 }
2603
2604 /* now build the result vector out of all the parameters and the data_sv */
2605 {
2606 int i;
2607
2608 for (i = 0; i < items; ++i)
2609 av_push (state, SvREFCNT_inc_NN (ST (i)));
2610 }
2611
2612 av_push (state, data_sv);
2613
2614 api_ready (aTHX_ coro);
2615 SvREFCNT_dec (coro);
2616 SvREFCNT_dec ((AV *)state);
2617}
2618
2619static int
2620slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2621{
2622 AV *state = (AV *)frame->data;
2623
2624 /* if we are about to throw, return early */
2625 /* this does not cancel the aio request, but at least */
2626 /* it quickly returns */
2627 if (CORO_THROW)
2628 return 0;
2629
2630 /* one element that is an RV? repeat! */
2631 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2632 return 1;
2633
2634 /* restore status */
2635 {
2636 SV *data_sv = av_pop (state);
2637 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2638
2639 errno = data->errorno;
2640 PL_laststype = data->laststype;
2641 PL_laststatval = data->laststatval;
2642 PL_statcache = data->statcache;
2643
2644 SvREFCNT_dec (data_sv);
2645 }
2646
2647 /* push result values */
1958 { 2648 {
1959 dSP; 2649 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2650 int i;
1961 int gimme = GIMME_V;
1962 2651
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2652 EXTEND (SP, AvFILLp (state) + 1);
1964 2653 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2654 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2655
1974 PUTBACK; 2656 PUTBACK;
1975 } 2657 }
1976 2658
1977 return NORMAL; 2659 return 0;
1978} 2660}
1979 2661
1980static void 2662static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2663slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2664{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2665 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2666 SV *coro_hv = SvRV (coro_current);
2667 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2668
1986 if (items > 2) 2669 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2670 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2671
1989 CvFLAGS (cv) |= CVf_SLF; 2672 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2673 if (coro->prio)
1991 slf_cv = cv; 2674 {
2675 dSP;
1992 2676
1993 /* we patch the op, and then re-run the whole call */ 2677 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2678 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2679
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2680 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2681 {
2682 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2683 prio_sv = newSViv (0);
2684 }
2003 2685
2004 PL_op->op_ppaddr = pp_slf; 2686 PUSHMARK (SP);
2687 sv_setiv (prio_sv, coro->prio);
2688 XPUSHs (prio_sv);
2005 2689
2006 PL_op = (OP *)&slf_restore; 2690 PUTBACK;
2691 call_sv (prio_cv, G_VOID | G_DISCARD);
2692 }
2693
2694 /* now call the original request */
2695 {
2696 dSP;
2697 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2698 int i;
2699
2700 PUSHMARK (SP);
2701
2702 /* first push all args to the stack */
2703 EXTEND (SP, items + 1);
2704
2705 for (i = 0; i < items; ++i)
2706 PUSHs (arg [i]);
2707
2708 /* now push the callback closure */
2709 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2710
2711 /* now call the AIO function - we assume our request is uncancelable */
2712 PUTBACK;
2713 call_sv ((SV *)req, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now that the requets is going, we loop toll we have a result */
2717 frame->data = (void *)state;
2718 frame->prepare = prepare_schedule;
2719 frame->check = slf_check_aio_req;
2007} 2720}
2721
2722static void
2723coro_aio_req_xs (pTHX_ CV *cv)
2724{
2725 dXSARGS;
2726
2727 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2728
2729 XSRETURN_EMPTY;
2730}
2731
2732/*****************************************************************************/
2733
2734#if CORO_CLONE
2735# include "clone.c"
2736#endif
2008 2737
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2738MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2739
2011PROTOTYPES: DISABLE 2740PROTOTYPES: DISABLE
2012 2741
2013BOOT: 2742BOOT:
2014{ 2743{
2015#ifdef USE_ITHREADS 2744#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2745# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2746 coro_thx = PERL_GET_CONTEXT;
2019# endif 2747# endif
2020#endif 2748#endif
2021 BOOT_PAGESIZE; 2749 BOOT_PAGESIZE;
… …
2042 main_top_env = PL_top_env; 2770 main_top_env = PL_top_env;
2043 2771
2044 while (main_top_env->je_prev) 2772 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 2773 main_top_env = main_top_env->je_prev;
2046 2774
2775 {
2776 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2777
2778 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2779 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2780
2781 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2782 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2783 }
2784
2047 coroapi.ver = CORO_API_VERSION; 2785 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 2786 coroapi.rev = CORO_API_REVISION;
2787
2049 coroapi.transfer = api_transfer; 2788 coroapi.transfer = api_transfer;
2789
2790 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 2791 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 2792 coroapi.prepare_nop = prepare_nop;
2793 coroapi.prepare_schedule = prepare_schedule;
2794 coroapi.prepare_cede = prepare_cede;
2795 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 2796
2053 { 2797 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2798 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 2799
2056 if (!svp) croak ("Time::HiRes is required"); 2800 if (!svp) croak ("Time::HiRes is required");
… …
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2806 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2063} 2807}
2064 2808
2065SV * 2809SV *
2066new (char *klass, ...) 2810new (char *klass, ...)
2811 ALIAS:
2812 Coro::new = 1
2067 CODE: 2813 CODE:
2068{ 2814{
2069 struct coro *coro; 2815 struct coro *coro;
2070 MAGIC *mg; 2816 MAGIC *mg;
2071 HV *hv; 2817 HV *hv;
2818 CV *cb;
2072 int i; 2819 int i;
2820
2821 if (items > 1)
2822 {
2823 cb = coro_sv_2cv (aTHX_ ST (1));
2824
2825 if (!ix)
2826 {
2827 if (CvISXSUB (cb))
2828 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2829
2830 if (!CvROOT (cb))
2831 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2832 }
2833 }
2073 2834
2074 Newz (0, coro, 1, struct coro); 2835 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV (); 2836 coro->args = newAV ();
2076 coro->flags = CF_NEW; 2837 coro->flags = CF_NEW;
2077 2838
… …
2082 coro->hv = hv = newHV (); 2843 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2844 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP; 2845 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2846 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086 2847
2848 if (items > 1)
2849 {
2087 av_extend (coro->args, items - 1); 2850 av_extend (coro->args, items - 1 + ix - 1);
2851
2852 if (ix)
2853 {
2854 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2855 cb = cv_coro_run;
2856 }
2857
2858 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2859
2088 for (i = 1; i < items; i++) 2860 for (i = 2; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i))); 2861 av_push (coro->args, newSVsv (ST (i)));
2862 }
2090} 2863}
2091 OUTPUT: 2864 OUTPUT:
2092 RETVAL 2865 RETVAL
2093 2866
2094void 2867void
2095_set_stacklevel (...) 2868transfer (...)
2869 PROTOTYPE: $$
2096 CODE: 2870 CODE:
2097{ 2871 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101
2102void
2103transfer (...)
2104 CODE:
2105{
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 2872
2110bool 2873bool
2111_destroy (SV *coro_sv) 2874_destroy (SV *coro_sv)
2112 CODE: 2875 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2876 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2118_exit (int code) 2881_exit (int code)
2119 PROTOTYPE: $ 2882 PROTOTYPE: $
2120 CODE: 2883 CODE:
2121 _exit (code); 2884 _exit (code);
2122 2885
2886#if CORO_CLONE
2887
2888SV *
2889clone (Coro::State coro)
2890 CODE:
2891{
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899}
2900 OUTPUT:
2901 RETVAL
2902
2903#endif
2904
2123int 2905int
2124cctx_stacksize (int new_stacksize = 0) 2906cctx_stacksize (int new_stacksize = 0)
2907 PROTOTYPE: ;$
2125 CODE: 2908 CODE:
2126 RETVAL = cctx_stacksize; 2909 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 2910 if (new_stacksize)
2128 { 2911 {
2129 cctx_stacksize = new_stacksize; 2912 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 2915 OUTPUT:
2133 RETVAL 2916 RETVAL
2134 2917
2135int 2918int
2136cctx_max_idle (int max_idle = 0) 2919cctx_max_idle (int max_idle = 0)
2920 PROTOTYPE: ;$
2137 CODE: 2921 CODE:
2138 RETVAL = cctx_max_idle; 2922 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 2923 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 2924 cctx_max_idle = max_idle;
2141 OUTPUT: 2925 OUTPUT:
2142 RETVAL 2926 RETVAL
2143 2927
2144int 2928int
2145cctx_count () 2929cctx_count ()
2930 PROTOTYPE:
2146 CODE: 2931 CODE:
2147 RETVAL = cctx_count; 2932 RETVAL = cctx_count;
2148 OUTPUT: 2933 OUTPUT:
2149 RETVAL 2934 RETVAL
2150 2935
2151int 2936int
2152cctx_idle () 2937cctx_idle ()
2938 PROTOTYPE:
2153 CODE: 2939 CODE:
2154 RETVAL = cctx_idle; 2940 RETVAL = cctx_idle;
2155 OUTPUT: 2941 OUTPUT:
2156 RETVAL 2942 RETVAL
2157 2943
2158void 2944void
2159list () 2945list ()
2946 PROTOTYPE:
2160 PPCODE: 2947 PPCODE:
2161{ 2948{
2162 struct coro *coro; 2949 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 2950 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 2951 if (coro->hv)
… …
2226 3013
2227void 3014void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3015throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3016 PROTOTYPE: $;$
2230 CODE: 3017 CODE:
3018{
3019 struct coro *current = SvSTATE_current;
3020 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3021 SvREFCNT_dec (*throwp);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3022 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3023}
2233 3024
2234void 3025void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3026api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3027 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3028 C_ARGS: aTHX_ coro, flags
2237 3029
2238SV * 3030SV *
2239has_cctx (Coro::State coro) 3031has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3032 PROTOTYPE: $
… …
2265 OUTPUT: 3057 OUTPUT:
2266 RETVAL 3058 RETVAL
2267 3059
2268void 3060void
2269force_cctx () 3061force_cctx ()
3062 PROTOTYPE:
2270 CODE: 3063 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3064 SvSTATE_current->cctx->idle_sp = 0;
2273 3065
2274void 3066void
2275swap_defsv (Coro::State self) 3067swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3068 PROTOTYPE: $
2277 ALIAS: 3069 ALIAS:
2278 swap_defav = 1 3070 swap_defav = 1
2279 CODE: 3071 CODE:
2280 if (!self->slot) 3072 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3073 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3074 else
2283 { 3075 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3076 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3077 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3078
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3079 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3080 }
2289 3081
3082
2290MODULE = Coro::State PACKAGE = Coro 3083MODULE = Coro::State PACKAGE = Coro
2291 3084
2292BOOT: 3085BOOT:
2293{ 3086{
2294 int i; 3087 int i;
2295 3088
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3089 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3090 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3091 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3092 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3093 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3094 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3095 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3096 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3097
3098 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3099 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3100 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3101 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2302 3102
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3103 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3104
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3105 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3106 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2314 3114
2315 { 3115 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3116 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3117
2318 coroapi.schedule = api_schedule; 3118 coroapi.schedule = api_schedule;
3119 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3120 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3121 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3122 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3123 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3124 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3125 coroapi.current = coro_current;
2325 3126
2326 GCoroAPI = &coroapi; 3127 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3128 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3129 SvREADONLY_on (sv);
2329 } 3130 }
2330} 3131}
2331 3132
2332void 3133void
3134terminate (...)
3135 CODE:
3136 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3137
3138void
2333schedule (...) 3139schedule (...)
2334 CODE: 3140 CODE:
2335{ 3141 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3142
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3143void
2338} 3144schedule_to (...)
3145 CODE:
3146 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3147
3148void
3149cede_to (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3152
2340void 3153void
2341cede (...) 3154cede (...)
2342 CODE: 3155 CODE:
2343{ 3156 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3157
2348void 3158void
2349cede_notself (...) 3159cede_notself (...)
2350 CODE: 3160 CODE:
2351{ 3161 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop }; 3162
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3163void
2354} 3164_cancel (Coro::State self)
3165 CODE:
3166 coro_state_destroy (aTHX_ self);
3167 coro_call_on_destroy (aTHX_ self);
2355 3168
2356void 3169void
2357_set_current (SV *current) 3170_set_current (SV *current)
2358 PROTOTYPE: $ 3171 PROTOTYPE: $
2359 CODE: 3172 CODE:
… …
2362 3175
2363void 3176void
2364_set_readyhook (SV *hook) 3177_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3178 PROTOTYPE: $
2366 CODE: 3179 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3180 SvREFCNT_dec (coro_readyhook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3181 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 3182
2372int 3183int
2373prio (Coro::State coro, int newprio = 0) 3184prio (Coro::State coro, int newprio = 0)
3185 PROTOTYPE: $;$
2374 ALIAS: 3186 ALIAS:
2375 nice = 1 3187 nice = 1
2376 CODE: 3188 CODE:
2377{ 3189{
2378 RETVAL = coro->prio; 3190 RETVAL = coro->prio;
… …
2405 CODE: 3217 CODE:
2406 RETVAL = coro_nready; 3218 RETVAL = coro_nready;
2407 OUTPUT: 3219 OUTPUT:
2408 RETVAL 3220 RETVAL
2409 3221
2410# for async_pool speedup
2411void 3222void
2412_pool_1 (SV *cb) 3223_pool_handler (...)
2413 CODE: 3224 CODE:
2414{ 3225 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3226
2422 if (!invoke) 3227void
3228async_pool (SV *cv, ...)
3229 PROTOTYPE: &@
3230 PPCODE:
3231{
3232 HV *hv = (HV *)av_pop (av_async_pool);
3233 AV *av = newAV ();
3234 SV *cb = ST (0);
3235 int i;
3236
3237 av_extend (av, items - 2);
3238 for (i = 1; i < items; ++i)
3239 av_push (av, SvREFCNT_inc_NN (ST (i)));
3240
3241 if ((SV *)hv == &PL_sv_undef)
2423 { 3242 {
2424 SV *old = PL_diehook; 3243 PUSHMARK (SP);
2425 PL_diehook = 0; 3244 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3245 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3246 PUSHs ((SV *)cv_pool_handler);
3247 PUTBACK;
3248 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3249 SPAGAIN;
3250
3251 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3252 }
2429 3253
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3254 {
2443 av_fill (defav, len - 1); 3255 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3256
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3257 assert (!coro->invoke_cb);
3258 assert (!coro->invoke_av);
3259 coro->invoke_cb = SvREFCNT_inc (cb);
3260 coro->invoke_av = av;
2446 } 3261 }
2447 3262
3263 api_ready (aTHX_ (SV *)hv);
3264
3265 if (GIMME_V != G_VOID)
3266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3267 else
2448 SvREFCNT_dec (invoke); 3268 SvREFCNT_dec (hv);
2449} 3269}
2450 3270
2451void 3271SV *
2452_pool_2 (SV *cb) 3272rouse_cb ()
3273 PROTOTYPE:
2453 CODE: 3274 CODE:
2454{ 3275 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3276 OUTPUT:
2527 RETVAL 3277 RETVAL
2528 3278
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3279void
2535_get_state (SV *self) 3280rouse_wait (...)
3281 PROTOTYPE: ;$
2536 PPCODE: 3282 PPCODE:
2537{ 3283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545 3284
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550 3285
2551 av_extend (av, AvFILLp (defav) + 1 + 1); 3286MODULE = Coro::State PACKAGE = PerlIO::cede
2552 3287
2553 for (i = 0; i <= AvFILLp (defav); ++i) 3288BOOT:
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3289 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555 3290
2556 av_push (av, data_sv);
2557 3291
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3292MODULE = Coro::State PACKAGE = Coro::Semaphore
2559 3293
2560 api_ready (aTHX_ self); 3294SV *
2561} 3295new (SV *klass, SV *count = 0)
3296 CODE:
3297 RETVAL = sv_bless (
3298 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3299 GvSTASH (CvGV (cv))
3300 );
3301 OUTPUT:
3302 RETVAL
3303
3304# helper for Coro::Channel
3305SV *
3306_alloc (int count)
3307 CODE:
3308 RETVAL = coro_waitarray_new (aTHX_ count);
3309 OUTPUT:
3310 RETVAL
3311
3312SV *
3313count (SV *self)
3314 CODE:
3315 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3316 OUTPUT:
3317 RETVAL
2562 3318
2563void 3319void
2564_set_state (SV *state) 3320up (SV *self, int adjust = 1)
2565 PROTOTYPE: $ 3321 ALIAS:
3322 adjust = 1
3323 CODE:
3324 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3325
3326void
3327down (...)
3328 CODE:
3329 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3330
3331void
3332wait (...)
3333 CODE:
3334 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3335
3336void
3337try (SV *self)
3338 PPCODE:
3339{
3340 AV *av = (AV *)SvRV (self);
3341 SV *count_sv = AvARRAY (av)[0];
3342 IV count = SvIVX (count_sv);
3343
3344 if (count > 0)
3345 {
3346 --count;
3347 SvIVX (count_sv) = count;
3348 XSRETURN_YES;
3349 }
3350 else
3351 XSRETURN_NO;
3352}
3353
3354void
3355waiters (SV *self)
3356 PPCODE:
3357{
3358 AV *av = (AV *)SvRV (self);
3359 int wcount = AvFILLp (av) + 1 - 1;
3360
3361 if (GIMME_V == G_SCALAR)
3362 XPUSHs (sv_2mortal (newSViv (wcount)));
3363 else
3364 {
3365 int i;
3366 EXTEND (SP, wcount);
3367 for (i = 1; i <= wcount; ++i)
3368 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3369 }
3370}
3371
3372MODULE = Coro::State PACKAGE = Coro::Signal
3373
3374SV *
3375new (SV *klass)
2566 PPCODE: 3376 CODE:
3377 RETVAL = sv_bless (
3378 coro_waitarray_new (aTHX_ 0),
3379 GvSTASH (CvGV (cv))
3380 );
3381 OUTPUT:
3382 RETVAL
3383
3384void
3385wait (...)
3386 CODE:
3387 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3388
3389void
3390broadcast (SV *self)
3391 CODE:
2567{ 3392{
2568 AV *av = (AV *)SvRV (state); 3393 AV *av = (AV *)SvRV (self);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3394 coro_signal_wake (aTHX_ av, AvFILLp (av));
2570 int i; 3395}
2571 3396
2572 errno = data->errorno; 3397void
2573 PL_laststype = data->laststype; 3398send (SV *self)
2574 PL_laststatval = data->laststatval; 3399 CODE:
2575 PL_statcache = data->statcache; 3400{
3401 AV *av = (AV *)SvRV (self);
2576 3402
2577 EXTEND (SP, AvFILLp (av)); 3403 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3404 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3405 else
3406 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3407}
3408
3409IV
3410awaited (SV *self)
3411 CODE:
3412 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3413 OUTPUT:
3414 RETVAL
2581 3415
2582 3416
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3417MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3418
2585BOOT: 3419BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3420 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3421
2588SV * 3422void
2589_schedule (...) 3423_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3424 CODE:
2592{ 3425{
2593 static int incede; 3426 static int incede;
2594 3427
2595 api_cede_notself (aTHX); 3428 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3434 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3435 if (coro_nready >= incede)
2603 { 3436 {
2604 PUSHMARK (SP); 3437 PUSHMARK (SP);
2605 PUTBACK; 3438 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3439 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3440 }
2609 3441
2610 --incede; 3442 --incede;
2611} 3443}
2612 3444
2613 3445
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3446MODULE = Coro::State PACKAGE = Coro::AIO
2615 3447
2616BOOT: 3448void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3449_register (char *target, char *proto, SV *req)
3450 CODE:
3451{
3452 CV *req_cv = coro_sv_2cv (aTHX_ req);
3453 /* newXSproto doesn't return the CV on 5.8 */
3454 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3455 sv_setpv ((SV *)slf_cv, proto);
3456 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3457}
2618 3458

Diff Legend

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