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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.319 by root, Thu Nov 20 07:25:01 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
100 106
101/* 5.8.7 */ 107/* 5.8.7 */
102#ifndef SvRV_set 108#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 110#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 123#endif
118 124
119/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
121#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
123 134
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 136
126#if __GNUC__ >= 3 137#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
138 149
139#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
140 151
141#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
142 154
143#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 156# if CORO_PTHREAD
149static void *coro_thx; 157static void *coro_thx;
150# endif 158# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 159#endif
158 160
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173
174static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
175 166
176static U32 cctx_gen; 167static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 171static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 174
185struct transfer_args 175static AV *av_destroy; /* destruction queue */
186{ 176static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next;
188};
189 177
190static GV *irsgv; /* $/ */ 178static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 179static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 180static SV *rv_diehook;
193static SV *rv_warnhook; 181static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 182static HV *hv_sig; /* %SIG */
195 183
196/* async_pool helper stuff */ 184/* async_pool helper stuff */
197static SV *sv_pool_rss; 185static SV *sv_pool_rss;
198static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
191static CV *cv_coro_state_new;
200 192
201/* Coro::AnyEvent */ 193/* Coro::AnyEvent */
202static SV *sv_activity; 194static SV *sv_activity;
203 195
204static struct coro_cctx *cctx_first; 196static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 204 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 205 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 206};
215 207
216/* this is a structure representing a c-level coroutine */ 208/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 209typedef struct coro_cctx
210{
218 struct coro_cctx *next; 211 struct coro_cctx *next;
219 212
220 /* the stack */ 213 /* the stack */
221 void *sptr; 214 void *sptr;
222 size_t ssize; 215 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 233 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 234 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 235};
243 236
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 237/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 238typedef struct
239{
246 SV *defsv; 240 SV *defsv;
247 AV *defav; 241 AV *defav;
248 SV *errsv; 242 SV *errsv;
249 SV *irsgv; 243 SV *irsgv;
250#define VAR(name,type) type name; 244#define VAR(name,type) type name;
… …
254 248
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 249#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 250
257/* this is a structure representing a perl-level coroutine */ 251/* this is a structure representing a perl-level coroutine */
258struct coro { 252struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 253 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 254 coro_cctx *cctx;
261 255
262 /* process data */ 256 /* state data */
257 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 258 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 259 perl_slots *slot; /* basically the saved sp */
265 260
261 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 262 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 263 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 264 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 265 HV *hv; /* the perl hash associated with this coro, if any */
266 void (*on_destroy)(pTHX_ struct coro *coro);
270 267
271 /* statistics */ 268 /* statistics */
272 int usecount; /* number of transfers to this coro */ 269 int usecount; /* number of transfers to this coro */
273 270
274 /* coro process data */ 271 /* coro process data */
275 int prio; 272 int prio;
276 SV *throw; /* exception to be thrown */ 273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
277 275
278 /* async_pool */ 276 /* async_pool */
279 SV *saved_deffh; 277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
280 280
281 /* linked list */ 281 /* linked list */
282 struct coro *next, *prev; 282 struct coro *next, *prev;
283}; 283};
284 284
285typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
287
288/* the following variables are effectively part of the perl context */
289/* and get copied between struct coro and these variables */
290/* the mainr easonw e don't support windows process emulation */
291static struct CoroSLF slf_frame; /* the current slf frame */
287 292
288/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
289 294
290#define PRIO_MAX 3 295#define PRIO_MAX 3
291#define PRIO_HIGH 1 296#define PRIO_HIGH 1
… …
296 301
297/* for Coro.pm */ 302/* for Coro.pm */
298static SV *coro_current; 303static SV *coro_current;
299static SV *coro_readyhook; 304static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 306static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 307static struct coro *coro_first;
308#define coro_nready coroapi.nready
303 309
304/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
305 311
306static SV * 312static SV *
307coro_get_sv (pTHX_ const char *name, int create) 313coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 336 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 337 get_hv (name, create);
332#endif 338#endif
333 return get_hv (name, create); 339 return get_hv (name, create);
340}
341
342/* may croak */
343INLINE CV *
344coro_sv_2cv (pTHX_ SV *sv)
345{
346 HV *st;
347 GV *gvp;
348 return sv_2cv (sv, &st, &gvp, 0);
334} 349}
335 350
336static AV * 351static AV *
337coro_clone_padlist (pTHX_ CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
338{ 353{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 408
394 return 0; 409 return 0;
395} 410}
396 411
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 412#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 414
400static MGVTBL coro_cv_vtbl = { 415static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 416 0, 0, 0, 0,
402 coro_cv_free 417 coro_cv_free
403}; 418};
404 419
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
405#define CORO_MAGIC(sv, type) \ 425#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 426 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 427 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 428 : 0)
411 429
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 430#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 431#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 432
415INLINE struct coro * 433INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 434SvSTATE_ (pTHX_ SV *coro)
417{ 435{
418 HV *stash; 436 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 453 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 454 return (struct coro *)mg->mg_ptr;
437} 455}
438 456
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 457#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
458
459/* faster than SvSTATE, but expects a coroutine hv */
460#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
461#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 462
441/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
442static void 464static void
443get_padlist (pTHX_ CV *cv) 465get_padlist (pTHX_ CV *cv)
444{ 466{
… …
450 else 472 else
451 { 473 {
452#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 475 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 476 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
459#else 481#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 533 CvPADLIST (cv) = (AV *)POPs;
512 } 534 }
513 535
514 PUTBACK; 536 PUTBACK;
515 } 537 }
538
539 slf_frame = c->slf_frame;
540 CORO_THROW = c->except;
516} 541}
517 542
518static void 543static void
519save_perl (pTHX_ Coro__State c) 544save_perl (pTHX_ Coro__State c)
520{ 545{
546 c->except = CORO_THROW;
547 c->slf_frame = slf_frame;
548
521 { 549 {
522 dSP; 550 dSP;
523 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 552 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 553 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 620 #undef VAR
593 } 621 }
594} 622}
595 623
596/* 624/*
597 * allocate various perl stacks. This is an exact copy 625 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
601 */ 629 */
602#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
604#else 632#else
605static void 633static void
606coro_init_stacks (pTHX) 634coro_init_stacks (pTHX)
607{ 635{
608 PL_curstackinfo = new_stackinfo(32, 8); 636 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 700 Safefree (PL_retstack);
673#endif 701#endif
674} 702}
675 703
704#define CORO_RSS \
705 rss += sizeof (SYM (curstackinfo)); \
706 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
708 rss += SYM (tmps_max) * sizeof (SV *); \
709 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
710 rss += SYM (scopestack_max) * sizeof (I32); \
711 rss += SYM (savestack_max) * sizeof (ANY);
712
676static size_t 713static size_t
677coro_rss (pTHX_ struct coro *coro) 714coro_rss (pTHX_ struct coro *coro)
678{ 715{
679 size_t rss = sizeof (*coro); 716 size_t rss = sizeof (*coro);
680 717
681 if (coro->mainstack) 718 if (coro->mainstack)
682 { 719 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 720 if (coro->flags & CF_RUNNING)
687 { 721 {
688 slot = &tmp_slot; 722 #define SYM(sym) PL_ ## sym
689 723 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 724 #undef SYM
693 } 725 }
694 else 726 else
695 slot = coro->slot;
696
697 if (slot)
698 { 727 {
699 rss += sizeof (slot->curstackinfo); 728 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 729 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 730 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 731 }
711 } 732 }
712 733
713 return rss; 734 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 735}
742 736
743/** coroutine stack handling ************************************************/ 737/** coroutine stack handling ************************************************/
744 738
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 739static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 825
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 826 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 827}
834 828
835static void 829static void
830prepare_nop (pTHX_ struct coro_transfer_args *ta)
831{
832 /* kind of mega-hacky, but works */
833 ta->next = ta->prev = (struct coro *)ta;
834}
835
836static int
837slf_check_nop (pTHX_ struct CoroSLF *frame)
838{
839 return 0;
840}
841
842static int
843slf_check_repeat (pTHX_ struct CoroSLF *frame)
844{
845 return 1;
846}
847
848static UNOP coro_setup_op;
849
850static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 851coro_setup (pTHX_ struct coro *coro)
837{ 852{
838 /* 853 /*
839 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
840 */ 855 */
… …
867 { 882 {
868 dSP; 883 dSP;
869 UNOP myop; 884 UNOP myop;
870 885
871 Zero (&myop, 1, UNOP); 886 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
874 890
875 PUSHMARK (SP); 891 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 892 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 893 PUTBACK;
878 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 896 }
882 897
883 /* this newly created coroutine might be run on an existing cctx which most 898 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 900 */
887 SSL_HEAD; 901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
902 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
903
904 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
905 coro_setup_op.op_next = PL_op;
906 coro_setup_op.op_type = OP_CUSTOM;
907 coro_setup_op.op_ppaddr = pp_slf;
908 /* no flags etc. required, as an init function won't be called */
909
910 PL_op = (OP *)&coro_setup_op;
911
912 /* copy throw, in case it was set before coro_setup */
913 CORO_THROW = coro->except;
888} 914}
889 915
890static void 916static void
891coro_destruct (pTHX_ struct coro *coro) 917coro_destruct (pTHX_ struct coro *coro)
892{ 918{
… …
916 942
917 SvREFCNT_dec (PL_diehook); 943 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 944 SvREFCNT_dec (PL_warnhook);
919 945
920 SvREFCNT_dec (coro->saved_deffh); 946 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
922 950
923 coro_destruct_stacks (aTHX); 951 coro_destruct_stacks (aTHX);
924} 952}
925 953
926INLINE void 954INLINE void
… …
936static int 964static int
937runops_trace (pTHX) 965runops_trace (pTHX)
938{ 966{
939 COP *oldcop = 0; 967 COP *oldcop = 0;
940 int oldcxix = -2; 968 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 969 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx; 970 coro_cctx *cctx = coro->cctx;
943 971
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 973 {
946 PERL_ASYNC_CHECK (); 974 PERL_ASYNC_CHECK ();
… …
998 { 1026 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1028
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1030 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1031 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1032 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1033 SV *fullname = sv_2mortal (newSV (0));
1007 1034
1008 if (isGV (gv)) 1035 if (isGV (gv))
… …
1013 SAVETMPS; 1040 SAVETMPS;
1014 EXTEND (SP, 3); 1041 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1042 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1043 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1044 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1045 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1046 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1049 SPAGAIN;
1023 FREETMPS; 1050 FREETMPS;
… …
1055 1082
1056 TAINT_NOT; 1083 TAINT_NOT;
1057 return 0; 1084 return 0;
1058} 1085}
1059 1086
1087static struct coro_cctx *cctx_ssl_cctx;
1088static struct CoroSLF cctx_ssl_frame;
1089
1060static void 1090static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1091slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1092{
1063 ta->prev = (struct coro *)cctx; 1093 ta->prev = (struct coro *)cctx_ssl_cctx;
1064 ta->next = 0; 1094 ta->next = 0;
1065} 1095}
1066 1096
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1097static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1098slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1099{
1070/* also initialises PL_top_env */ 1100 *frame = cctx_ssl_frame;
1101
1102 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1103}
1104
1105/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1071static void NOINLINE 1106static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1107cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1108{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1109 PL_top_env = &PL_start_env;
1078 1110
1079 if (cctx->flags & CC_TRACE) 1111 if (cctx->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1112 PL_runops = runops_trace;
1081 1113
1082 Zero (&myop, 1, UNOP); 1114 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1115 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1116 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1117 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1118
1086 PUSHMARK (SP); 1119 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1120 cctx_ssl_cctx = cctx;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1121 cctx_ssl_frame = slf_frame;
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1122
1090 PUTBACK; 1123 slf_frame.prepare = slf_prepare_set_stacklevel;
1091 PL_op = (OP *)&myop; 1124 slf_frame.check = slf_check_set_stacklevel;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1125}
1095 1126
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1127/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1128INLINE void
1098transfer_tail (pTHX) 1129transfer_tail (pTHX)
1099{ 1130{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1131 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1132}
1116 1133
1117/* 1134/*
1118 * this is a _very_ stripped down perl interpreter ;) 1135 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1136 */
… …
1126# endif 1143# endif
1127#endif 1144#endif
1128 { 1145 {
1129 dTHX; 1146 dTHX;
1130 1147
1131 /* we are the alternative tail to pp_set_stacklevel */ 1148 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1149 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1150 /* PL_nop = PL_nop->op_next */
1137 1151
1138 /* inject a fake subroutine call to cctx_init */ 1152 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1153 cctx_prepare (aTHX_ (coro_cctx *)arg);
1140 1154
1141 /* cctx_run is the alternative tail of transfer() */ 1155 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1156 transfer_tail (aTHX);
1143 1157
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1158 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1159 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1160 perl_run (PL_curinterp);
1161 /*
1162 * Unfortunately, there is no way to get at the return values of the
1163 * coro body here, as perl_run destroys these
1164 */
1147 1165
1148 /* 1166 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1167 * If perl-run returns we assume exit() was being called or the coro
1150 * fell off the end, which seems to be the only valid (non-bug) 1168 * fell off the end, which seems to be the only valid (non-bug)
1151 * reason for perl_run to return. We try to exit by jumping to the 1169 * reason for perl_run to return. We try to exit by jumping to the
… …
1302/** coroutine switching *****************************************************/ 1320/** coroutine switching *****************************************************/
1303 1321
1304static void 1322static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1323transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1324{
1325 /* TODO: throwing up here is considered harmful */
1326
1307 if (expect_true (prev != next)) 1327 if (expect_true (prev != next))
1308 { 1328 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1329 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1330 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1311 1331
1312 if (expect_false (next->flags & CF_RUNNING)) 1332 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1333 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1314 1334
1315 if (expect_false (next->flags & CF_DESTROYED)) 1335 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1336 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1317 1337
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1338#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1339 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1340 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1341#endif
1322 } 1342 }
1323} 1343}
1324 1344
1325/* always use the TRANSFER macro */ 1345/* always use the TRANSFER macro */
1326static void NOINLINE 1346static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1347transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1348{
1329 dSTACKLEVEL; 1349 dSTACKLEVEL;
1330 1350
1331 /* sometimes transfer is only called to set idle_sp */ 1351 /* sometimes transfer is only called to set idle_sp */
… …
1346 prev->flags |= CF_RUNNING; 1366 prev->flags |= CF_RUNNING;
1347 } 1367 }
1348 1368
1349 prev->flags &= ~CF_RUNNING; 1369 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1370 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1371
1354 /* first get rid of the old state */ 1372 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1373 save_perl (aTHX_ prev);
1356 1374
1357 if (expect_false (next->flags & CF_NEW)) 1375 if (expect_false (next->flags & CF_NEW))
… …
1371 prev__cctx->idle_sp == STACKLEVEL 1389 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1390 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx 1391 && !force_cctx
1374 )) 1392 ))
1375 { 1393 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1394 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1395 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378 1396
1379 prev->cctx = 0; 1397 prev->cctx = 0;
1380 1398
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1399 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1389 1407
1390 ++next->usecount; 1408 ++next->usecount;
1391 1409
1392 if (expect_true (!next->cctx)) 1410 if (expect_true (!next->cctx))
1393 next->cctx = cctx_get (aTHX); 1411 next->cctx = cctx_get (aTHX);
1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397 1412
1398 if (expect_false (prev__cctx != next->cctx)) 1413 if (expect_false (prev__cctx != next->cctx))
1399 { 1414 {
1400 prev__cctx->top_env = PL_top_env; 1415 prev__cctx->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1416 PL_top_env = next->cctx->top_env;
… …
1415coro_state_destroy (pTHX_ struct coro *coro) 1430coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1431{
1417 if (coro->flags & CF_DESTROYED) 1432 if (coro->flags & CF_DESTROYED)
1418 return 0; 1433 return 0;
1419 1434
1435 if (coro->on_destroy)
1436 coro->on_destroy (aTHX_ coro);
1437
1420 coro->flags |= CF_DESTROYED; 1438 coro->flags |= CF_DESTROYED;
1421 1439
1422 if (coro->flags & CF_READY) 1440 if (coro->flags & CF_READY)
1423 { 1441 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1442 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1443 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1444 --coro_nready;
1428 UNLOCK;
1429 } 1445 }
1430 else 1446 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1447 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1448
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1449 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1450 {
1435 struct coro temp; 1451 struct coro temp;
1436 1452
1437 if (coro->flags & CF_RUNNING) 1453 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1454
1440 save_perl (aTHX_ &temp); 1455 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1456 load_perl (aTHX_ coro);
1442 1457
1443 coro_destruct (aTHX_ coro); 1458 coro_destruct (aTHX_ coro);
… …
1446 1461
1447 coro->slot = 0; 1462 coro->slot = 0;
1448 } 1463 }
1449 1464
1450 cctx_destroy (coro->cctx); 1465 cctx_destroy (coro->cctx);
1466 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1467 SvREFCNT_dec (coro->args);
1468 SvREFCNT_dec (CORO_THROW);
1452 1469
1453 if (coro->next) coro->next->prev = coro->prev; 1470 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1471 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1472 if (coro == coro_first) coro_first = coro->next;
1456 1473
… …
1494# define MGf_DUP 0 1511# define MGf_DUP 0
1495#endif 1512#endif
1496}; 1513};
1497 1514
1498static void 1515static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1516prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1517{
1501 ta->prev = SvSTATE (prev_sv); 1518 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1519 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1520 TRANSFER_CHECK (*ta);
1504} 1521}
1505 1522
1506static void 1523static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1524api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1525{
1509 dTHX;
1510 struct transfer_args ta; 1526 struct coro_transfer_args ta;
1511 1527
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1528 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1529 TRANSFER (ta, 1);
1514} 1530}
1515 1531
1532/*****************************************************************************/
1533/* gensub: simple closure generation utility */
1534
1535#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1536
1537/* create a closure from XS, returns a code reference */
1538/* the arg can be accessed via GENSUB_ARG from the callback */
1539/* the callback must use dXSARGS/XSRETURN */
1540static SV *
1541gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1542{
1543 CV *cv = (CV *)newSV (0);
1544
1545 sv_upgrade ((SV *)cv, SVt_PVCV);
1546
1547 CvANON_on (cv);
1548 CvISXSUB_on (cv);
1549 CvXSUB (cv) = xsub;
1550 GENSUB_ARG = arg;
1551
1552 return newRV_noinc ((SV *)cv);
1553}
1554
1516/** Coro ********************************************************************/ 1555/** Coro ********************************************************************/
1517 1556
1518static void 1557INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1558coro_enq (pTHX_ struct coro *coro)
1520{ 1559{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1560 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1522} 1561}
1523 1562
1524static SV * 1563INLINE SV *
1525coro_deq (pTHX) 1564coro_deq (pTHX)
1526{ 1565{
1527 int prio; 1566 int prio;
1528 1567
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1568 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1571
1533 return 0; 1572 return 0;
1534} 1573}
1535 1574
1536static int 1575static int
1537api_ready (SV *coro_sv) 1576api_ready (pTHX_ SV *coro_sv)
1538{ 1577{
1539 dTHX;
1540 struct coro *coro; 1578 struct coro *coro;
1541 SV *sv_hook; 1579 SV *sv_hook;
1542 void (*xs_hook)(void); 1580 void (*xs_hook)(void);
1543 1581
1544 if (SvROK (coro_sv)) 1582 if (SvROK (coro_sv))
… …
1549 if (coro->flags & CF_READY) 1587 if (coro->flags & CF_READY)
1550 return 0; 1588 return 0;
1551 1589
1552 coro->flags |= CF_READY; 1590 coro->flags |= CF_READY;
1553 1591
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1592 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1593 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1594
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1595 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1596 ++coro_nready;
1561 1597
1562 UNLOCK;
1563
1564 if (sv_hook) 1598 if (sv_hook)
1565 { 1599 {
1566 dSP; 1600 dSP;
1567 1601
1568 ENTER; 1602 ENTER;
1569 SAVETMPS; 1603 SAVETMPS;
1570 1604
1571 PUSHMARK (SP); 1605 PUSHMARK (SP);
1572 PUTBACK; 1606 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1607 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1608
1576 FREETMPS; 1609 FREETMPS;
1577 LEAVE; 1610 LEAVE;
1578 } 1611 }
1579 1612
… …
1582 1615
1583 return 1; 1616 return 1;
1584} 1617}
1585 1618
1586static int 1619static int
1587api_is_ready (SV *coro_sv) 1620api_is_ready (pTHX_ SV *coro_sv)
1588{ 1621{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1622 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1623}
1593 1624
1625/* expects to own a reference to next->hv */
1594INLINE void 1626INLINE void
1627prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1628{
1629 SV *prev_sv = SvRV (coro_current);
1630
1631 ta->prev = SvSTATE_hv (prev_sv);
1632 ta->next = next;
1633
1634 TRANSFER_CHECK (*ta);
1635
1636 SvRV_set (coro_current, (SV *)next->hv);
1637
1638 free_coro_mortal (aTHX);
1639 coro_mortal = prev_sv;
1640}
1641
1642static void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1643prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1644{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;) 1645 for (;;)
1600 { 1646 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1647 SV *next_sv = coro_deq (aTHX);
1603 1648
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1649 if (expect_true (next_sv))
1606 { 1650 {
1651 struct coro *next = SvSTATE_hv (next_sv);
1652
1653 /* cannot transfer to destroyed coros, skip and look for next */
1654 if (expect_false (next->flags & CF_DESTROYED))
1655 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1656 else
1657 {
1658 next->flags &= ~CF_READY;
1659 --coro_nready;
1660
1661 prepare_schedule_to (aTHX_ ta, next);
1662 break;
1663 }
1664 }
1665 else
1666 {
1667 /* nothing to schedule: call the idle handler */
1607 dSP; 1668 dSP;
1608 UNLOCK;
1609 1669
1610 ENTER; 1670 ENTER;
1611 SAVETMPS; 1671 SAVETMPS;
1612 1672
1613 PUSHMARK (SP); 1673 PUSHMARK (SP);
1614 PUTBACK; 1674 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1616 SPAGAIN;
1617 1676
1618 FREETMPS; 1677 FREETMPS;
1619 LEAVE; 1678 LEAVE;
1620 continue;
1621 } 1679 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 } 1680 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv);
1642 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv);
1646
1647 LOCK;
1648 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1681}
1652 1682
1653INLINE void 1683INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1685{
1656 api_ready (coro_current); 1686 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1687 prepare_schedule (aTHX_ ta);
1658} 1688}
1659 1689
1660static void 1690INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1691prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1692{
1663 SV *prev = SvRV (coro_current); 1693 SV *prev = SvRV (coro_current);
1664 1694
1665 if (coro_nready) 1695 if (coro_nready)
1666 { 1696 {
1667 prepare_schedule (aTHX_ ta); 1697 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1698 api_ready (aTHX_ prev);
1669 } 1699 }
1670 else 1700 else
1671 ta->prev = ta->next = SvSTATE (prev); 1701 prepare_nop (aTHX_ ta);
1672} 1702}
1673 1703
1674static void 1704static void
1675api_schedule (void) 1705api_schedule (pTHX)
1676{ 1706{
1677 dTHX;
1678 struct transfer_args ta; 1707 struct coro_transfer_args ta;
1679 1708
1680 prepare_schedule (aTHX_ &ta); 1709 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1710 TRANSFER (ta, 1);
1682} 1711}
1683 1712
1713static void
1714api_schedule_to (pTHX_ SV *coro_sv)
1715{
1716 struct coro_transfer_args ta;
1717 struct coro *next = SvSTATE (coro_sv);
1718
1719 SvREFCNT_inc_NN (coro_sv);
1720 prepare_schedule_to (aTHX_ &ta, next);
1721}
1722
1684static int 1723static int
1685api_cede (void) 1724api_cede (pTHX)
1686{ 1725{
1687 dTHX;
1688 struct transfer_args ta; 1726 struct coro_transfer_args ta;
1689 1727
1690 prepare_cede (aTHX_ &ta); 1728 prepare_cede (aTHX_ &ta);
1691 1729
1692 if (expect_true (ta.prev != ta.next)) 1730 if (expect_true (ta.prev != ta.next))
1693 { 1731 {
… …
1697 else 1735 else
1698 return 0; 1736 return 0;
1699} 1737}
1700 1738
1701static int 1739static int
1702api_cede_notself (void) 1740api_cede_notself (pTHX)
1703{ 1741{
1704 if (coro_nready) 1742 if (coro_nready)
1705 { 1743 {
1706 dTHX;
1707 struct transfer_args ta; 1744 struct coro_transfer_args ta;
1708 1745
1709 prepare_cede_notself (aTHX_ &ta); 1746 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1747 TRANSFER (ta, 1);
1711 return 1; 1748 return 1;
1712 } 1749 }
1713 else 1750 else
1714 return 0; 1751 return 0;
1715} 1752}
1716 1753
1717static void 1754static void
1718api_trace (SV *coro_sv, int flags) 1755api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1756{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1757 struct coro *coro = SvSTATE (coro_sv);
1722 1758
1723 if (flags & CC_TRACE) 1759 if (flags & CC_TRACE)
1724 { 1760 {
1725 if (!coro->cctx) 1761 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1762 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1763 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1764 croak ("cannot enable tracing on coroutine with custom stack,");
1729 1765
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1766 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1767 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1768 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1769 {
… …
1738 else 1774 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1775 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1776 }
1741} 1777}
1742 1778
1743#if 0 1779static void
1780coro_call_on_destroy (pTHX_ struct coro *coro)
1781{
1782 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1783 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1784
1785 if (on_destroyp)
1786 {
1787 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1788
1789 while (AvFILLp (on_destroy) >= 0)
1790 {
1791 dSP; /* don't disturb outer sp */
1792 SV *cb = av_pop (on_destroy);
1793
1794 PUSHMARK (SP);
1795
1796 if (statusp)
1797 {
1798 int i;
1799 AV *status = (AV *)SvRV (*statusp);
1800 EXTEND (SP, AvFILLp (status) + 1);
1801
1802 for (i = 0; i <= AvFILLp (status); ++i)
1803 PUSHs (AvARRAY (status)[i]);
1804 }
1805
1806 PUTBACK;
1807 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1808 }
1809 }
1810}
1811
1812static void
1813slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 int i;
1816 HV *hv = (HV *)SvRV (coro_current);
1817 AV *av = newAV ();
1818
1819 av_extend (av, items - 1);
1820 for (i = 0; i < items; ++i)
1821 av_push (av, SvREFCNT_inc_NN (arg [i]));
1822
1823 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1824
1825 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1826 api_ready (aTHX_ sv_manager);
1827
1828 frame->prepare = prepare_schedule;
1829 frame->check = slf_check_repeat;
1830}
1831
1832/*****************************************************************************/
1833/* async pool handler */
1834
1744static int 1835static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1746{ 1837{
1747 AV *padlist; 1838 HV *hv = (HV *)SvRV (coro_current);
1748 AV *av = (AV *)mg->mg_obj; 1839 struct coro *coro = (struct coro *)frame->data;
1749 1840
1750 abort (); 1841 if (!coro->invoke_cb)
1842 return 1; /* loop till we have invoke */
1843 else
1844 {
1845 hv_store (hv, "desc", sizeof ("desc") - 1,
1846 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1847
1848 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1849
1850 {
1851 dSP;
1852 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1853 PUTBACK;
1854 }
1855
1856 SvREFCNT_dec (GvAV (PL_defgv));
1857 GvAV (PL_defgv) = coro->invoke_av;
1858 coro->invoke_av = 0;
1859
1860 return 0;
1861 }
1862}
1863
1864static void
1865slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 HV *hv = (HV *)SvRV (coro_current);
1868 struct coro *coro = SvSTATE_hv ((SV *)hv);
1869
1870 if (expect_true (coro->saved_deffh))
1871 {
1872 /* subsequent iteration */
1873 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1874 coro->saved_deffh = 0;
1875
1876 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1877 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1878 {
1879 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1880 coro->invoke_av = newAV ();
1881
1882 frame->prepare = prepare_nop;
1883 }
1884 else
1885 {
1886 av_clear (GvAV (PL_defgv));
1887 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1888
1889 coro->prio = 0;
1890
1891 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1892 api_trace (aTHX_ coro_current, 0);
1893
1894 frame->prepare = prepare_schedule;
1895 av_push (av_async_pool, SvREFCNT_inc (hv));
1896 }
1897 }
1898 else
1899 {
1900 /* first iteration, simply fall through */
1901 frame->prepare = prepare_nop;
1902 }
1903
1904 frame->check = slf_check_pool_handler;
1905 frame->data = (void *)coro;
1906}
1907
1908/*****************************************************************************/
1909/* rouse callback */
1910
1911#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1912
1913static void
1914coro_rouse_callback (pTHX_ CV *cv)
1915{
1916 dXSARGS;
1917 SV *data = (SV *)GENSUB_ARG;
1918
1919 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1920 {
1921 /* first call, set args */
1922 AV *av = newAV ();
1923 SV *coro = SvRV (data);
1924
1925 SvRV_set (data, (SV *)av);
1926 api_ready (aTHX_ coro);
1927 SvREFCNT_dec (coro);
1928
1929 /* better take a full copy of the arguments */
1930 while (items--)
1931 av_store (av, items, newSVsv (ST (items)));
1932 }
1933
1934 XSRETURN_EMPTY;
1935}
1936
1937static int
1938slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1939{
1940 SV *data = (SV *)frame->data;
1941
1942 if (CORO_THROW)
1943 return 0;
1944
1945 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1946 return 1;
1947
1948 /* now push all results on the stack */
1949 {
1950 dSP;
1951 AV *av = (AV *)SvRV (data);
1952 int i;
1953
1954 EXTEND (SP, AvFILLp (av) + 1);
1955 for (i = 0; i <= AvFILLp (av); ++i)
1956 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1957
1958 /* we have stolen the elements, so ste length to zero and free */
1959 AvFILLp (av) = -1;
1960 av_undef (av);
1961
1962 PUTBACK;
1963 }
1751 1964
1752 return 0; 1965 return 0;
1753} 1966}
1754 1967
1755static MGVTBL coro_gensub_vtbl = { 1968static void
1756 0, 0, 0, 0, 1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 1970{
1758}; 1971 SV *cb;
1759#endif 1972
1973 if (items)
1974 cb = arg [0];
1975 else
1976 {
1977 struct coro *coro = SvSTATE_current;
1978
1979 if (!coro->rouse_cb)
1980 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1981
1982 cb = sv_2mortal (coro->rouse_cb);
1983 coro->rouse_cb = 0;
1984 }
1985
1986 if (!SvROK (cb)
1987 || SvTYPE (SvRV (cb)) != SVt_PVCV
1988 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1989 croak ("Coro::rouse_wait called with illegal callback argument,");
1990
1991 {
1992 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1993 SV *data = (SV *)GENSUB_ARG;
1994
1995 frame->data = (void *)data;
1996 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1997 frame->check = slf_check_rouse_wait;
1998 }
1999}
2000
2001static SV *
2002coro_new_rouse_cb (pTHX)
2003{
2004 HV *hv = (HV *)SvRV (coro_current);
2005 struct coro *coro = SvSTATE_hv (hv);
2006 SV *data = newRV_inc ((SV *)hv);
2007 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2008
2009 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2010 SvREFCNT_dec (data); /* magicext increases the refcount */
2011
2012 SvREFCNT_dec (coro->rouse_cb);
2013 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2014
2015 return cb;
2016}
2017
2018/*****************************************************************************/
2019/* schedule-like-function opcode (SLF) */
2020
2021static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2022static const CV *slf_cv;
2023static SV **slf_argv;
2024static int slf_argc, slf_arga; /* count, allocated */
2025static I32 slf_ax; /* top of stack, for restore */
2026
2027/* this restores the stack in the case we patched the entersub, to */
2028/* recreate the stack frame as perl will on following calls */
2029/* since entersub cleared the stack */
2030static OP *
2031pp_restore (pTHX)
2032{
2033 int i;
2034 SV **SP = PL_stack_base + slf_ax;
2035
2036 PUSHMARK (SP);
2037
2038 EXTEND (SP, slf_argc + 1);
2039
2040 for (i = 0; i < slf_argc; ++i)
2041 PUSHs (sv_2mortal (slf_argv [i]));
2042
2043 PUSHs ((SV *)CvGV (slf_cv));
2044
2045 RETURNOP (slf_restore.op_first);
2046}
2047
2048static void
2049slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2050{
2051 SV **arg = (SV **)slf_frame.data;
2052
2053 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2054}
2055
2056static void
2057slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 if (items != 2)
2060 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2061
2062 frame->prepare = slf_prepare_transfer;
2063 frame->check = slf_check_nop;
2064 frame->data = (void *)arg; /* let's hope it will stay valid */
2065}
2066
2067static void
2068slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 frame->prepare = prepare_schedule;
2071 frame->check = slf_check_nop;
2072}
2073
2074static void
2075slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2076{
2077 struct coro *next = (struct coro *)slf_frame.data;
2078
2079 SvREFCNT_inc_NN (next->hv);
2080 prepare_schedule_to (aTHX_ ta, next);
2081}
2082
2083static void
2084slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (!items)
2087 croak ("Coro::schedule_to expects a coroutine argument, caught");
2088
2089 frame->data = (void *)SvSTATE (arg [0]);
2090 frame->prepare = slf_prepare_schedule_to;
2091 frame->check = slf_check_nop;
2092}
2093
2094static void
2095slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 api_ready (aTHX_ SvRV (coro_current));
2098
2099 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2100}
2101
2102static void
2103slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 frame->prepare = prepare_cede;
2106 frame->check = slf_check_nop;
2107}
2108
2109static void
2110slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2111{
2112 frame->prepare = prepare_cede_notself;
2113 frame->check = slf_check_nop;
2114}
2115
2116/*
2117 * these not obviously related functions are all rolled into one
2118 * function to increase chances that they all will call transfer with the same
2119 * stack offset
2120 * SLF stands for "schedule-like-function".
2121 */
2122static OP *
2123pp_slf (pTHX)
2124{
2125 I32 checkmark; /* mark SP to see how many elements check has pushed */
2126
2127 /* set up the slf frame, unless it has already been set-up */
2128 /* the latter happens when a new coro has been started */
2129 /* or when a new cctx was attached to an existing coroutine */
2130 if (expect_true (!slf_frame.prepare))
2131 {
2132 /* first iteration */
2133 dSP;
2134 SV **arg = PL_stack_base + TOPMARK + 1;
2135 int items = SP - arg; /* args without function object */
2136 SV *gv = *sp;
2137
2138 /* do a quick consistency check on the "function" object, and if it isn't */
2139 /* for us, divert to the real entersub */
2140 if (SvTYPE (gv) != SVt_PVGV
2141 || !GvCV (gv)
2142 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2143 return PL_ppaddr[OP_ENTERSUB](aTHX);
2144
2145 if (!(PL_op->op_flags & OPf_STACKED))
2146 {
2147 /* ampersand-form of call, use @_ instead of stack */
2148 AV *av = GvAV (PL_defgv);
2149 arg = AvARRAY (av);
2150 items = AvFILLp (av) + 1;
2151 }
2152
2153 /* now call the init function, which needs to set up slf_frame */
2154 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2155 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2156
2157 /* pop args */
2158 SP = PL_stack_base + POPMARK;
2159
2160 PUTBACK;
2161 }
2162
2163 /* now that we have a slf_frame, interpret it! */
2164 /* we use a callback system not to make the code needlessly */
2165 /* complicated, but so we can run multiple perl coros from one cctx */
2166
2167 do
2168 {
2169 struct coro_transfer_args ta;
2170
2171 slf_frame.prepare (aTHX_ &ta);
2172 TRANSFER (ta, 0);
2173
2174 checkmark = PL_stack_sp - PL_stack_base;
2175 }
2176 while (slf_frame.check (aTHX_ &slf_frame));
2177
2178 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2179
2180 /* exception handling */
2181 if (expect_false (CORO_THROW))
2182 {
2183 SV *exception = sv_2mortal (CORO_THROW);
2184
2185 CORO_THROW = 0;
2186 sv_setsv (ERRSV, exception);
2187 croak (0);
2188 }
2189
2190 /* return value handling - mostly like entersub */
2191 /* make sure we put something on the stack in scalar context */
2192 if (GIMME_V == G_SCALAR)
2193 {
2194 dSP;
2195 SV **bot = PL_stack_base + checkmark;
2196
2197 if (sp == bot) /* too few, push undef */
2198 bot [1] = &PL_sv_undef;
2199 else if (sp != bot + 1) /* too many, take last one */
2200 bot [1] = *sp;
2201
2202 SP = bot + 1;
2203
2204 PUTBACK;
2205 }
2206
2207 return NORMAL;
2208}
2209
2210static void
2211api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2212{
2213 int i;
2214 SV **arg = PL_stack_base + ax;
2215 int items = PL_stack_sp - arg + 1;
2216
2217 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2218
2219 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2220 && PL_op->op_ppaddr != pp_slf)
2221 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2222
2223 CvFLAGS (cv) |= CVf_SLF;
2224 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2225 slf_cv = cv;
2226
2227 /* we patch the op, and then re-run the whole call */
2228 /* we have to put the same argument on the stack for this to work */
2229 /* and this will be done by pp_restore */
2230 slf_restore.op_next = (OP *)&slf_restore;
2231 slf_restore.op_type = OP_CUSTOM;
2232 slf_restore.op_ppaddr = pp_restore;
2233 slf_restore.op_first = PL_op;
2234
2235 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2236
2237 if (PL_op->op_flags & OPf_STACKED)
2238 {
2239 if (items > slf_arga)
2240 {
2241 slf_arga = items;
2242 free (slf_argv);
2243 slf_argv = malloc (slf_arga * sizeof (SV *));
2244 }
2245
2246 slf_argc = items;
2247
2248 for (i = 0; i < items; ++i)
2249 slf_argv [i] = SvREFCNT_inc (arg [i]);
2250 }
2251 else
2252 slf_argc = 0;
2253
2254 PL_op->op_ppaddr = pp_slf;
2255 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2256
2257 PL_op = (OP *)&slf_restore;
2258}
1760 2259
1761/*****************************************************************************/ 2260/*****************************************************************************/
1762/* PerlIO::cede */ 2261/* PerlIO::cede */
1763 2262
1764typedef struct 2263typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2291 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2292 double now = nvtime ();
1794 2293
1795 if (now >= self->next) 2294 if (now >= self->next)
1796 { 2295 {
1797 api_cede (); 2296 api_cede (aTHX);
1798 self->next = now + self->every; 2297 self->next = now + self->every;
1799 } 2298 }
1800 2299
1801 return PerlIOBuf_flush (aTHX_ f); 2300 return PerlIOBuf_flush (aTHX_ f);
1802} 2301}
… …
1832 PerlIOBuf_get_cnt, 2331 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2332 PerlIOBuf_set_ptrcnt,
1834}; 2333};
1835 2334
1836/*****************************************************************************/ 2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
1837 2337
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2338static SV *
1848pp_restore (pTHX) 2339coro_waitarray_new (pTHX_ int count)
1849{ 2340{
2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
2344
2345 /* unfortunately, building manually saves memory */
2346 Newx (ary, 2, SV *);
2347 AvALLOC (av) = ary;
2348 /*AvARRAY (av) = ary;*/
2349 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2350 AvMAX (av) = 1;
2351 AvFILLp (av) = 0;
2352 ary [0] = newSViv (count);
2353
2354 return newRV_noinc ((SV *)av);
2355}
2356
2357/* semaphore */
2358
2359static void
2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2361{
2362 SV *count_sv = AvARRAY (av)[0];
2363 IV count = SvIVX (count_sv);
2364
2365 count += adjust;
2366 SvIVX (count_sv) = count;
2367
2368 /* now wake up as many waiters as are expected to lock */
2369 while (count > 0 && AvFILLp (av) > 0)
2370 {
2371 SV *cb;
2372
2373 /* swap first two elements so we can shift a waiter */
2374 AvARRAY (av)[0] = AvARRAY (av)[1];
2375 AvARRAY (av)[1] = count_sv;
2376 cb = av_shift (av);
2377
2378 if (SvOBJECT (cb))
2379 {
2380 api_ready (aTHX_ cb);
2381 --count;
2382 }
2383 else if (SvTYPE (cb) == SVt_PVCV)
2384 {
2385 dSP;
2386 PUSHMARK (SP);
2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2388 PUTBACK;
2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2390 }
2391
2392 SvREFCNT_dec (cb);
2393 }
2394}
2395
2396static void
2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2398{
2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2401}
2402
2403static int
2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2405{
2406 AV *av = (AV *)frame->data;
2407 SV *count_sv = AvARRAY (av)[0];
2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2412 else if (SvIVX (count_sv) > 0)
2413 {
2414 SvSTATE_current->on_destroy = 0;
2415
2416 if (acquire)
2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2421 return 0;
2422 }
2423 else
2424 {
2425 int i;
2426 /* if we were woken up but can't down, we look through the whole */
2427 /* waiters list and only add us if we aren't in there already */
2428 /* this avoids some degenerate memory usage cases */
2429
2430 for (i = 1; i <= AvFILLp (av); ++i)
2431 if (AvARRAY (av)[i] == SvRV (coro_current))
2432 return 1;
2433
2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2435 return 1;
2436 }
2437}
2438
2439static int
2440slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2441{
2442 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2443}
2444
2445static int
2446slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2449}
2450
2451static void
2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2453{
2454 AV *av = (AV *)SvRV (arg [0]);
2455
2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2457 {
2458 frame->data = (void *)av;
2459 frame->prepare = prepare_nop;
2460 }
2461 else
2462 {
2463 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2464
2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2466 frame->prepare = prepare_schedule;
2467
2468 /* to avoid race conditions when a woken-up coro gets terminated */
2469 /* we arrange for a temporary on_destroy that calls adjust (0) */
2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2471 }
2472}
2473
2474static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2476{
2477 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2478 frame->check = slf_check_semaphore_down;
2479}
2480
2481static void
2482slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 if (items >= 2)
2485 {
2486 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2489
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2491
2492 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0);
2494
2495 frame->prepare = prepare_nop;
2496 frame->check = slf_check_nop;
2497 }
2498 else
2499 {
2500 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2501 frame->check = slf_check_semaphore_wait;
2502 }
2503}
2504
2505/* signal */
2506
2507static void
2508coro_signal_wake (pTHX_ AV *av, int count)
2509{
2510 SvIVX (AvARRAY (av)[0]) = 0;
2511
2512 /* now signal count waiters */
2513 while (count > 0 && AvFILLp (av) > 0)
2514 {
2515 SV *cb;
2516
2517 /* swap first two elements so we can shift a waiter */
2518 cb = AvARRAY (av)[0];
2519 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb;
2521
2522 cb = av_shift (av);
2523
2524 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */
2526 SvREFCNT_dec (cb);
2527
2528 --count;
2529 }
2530}
2531
2532static int
2533slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2534{
2535 /* if we are about to throw, also stop waiting */
2536 return SvROK ((SV *)frame->data) && !CORO_THROW;
2537}
2538
2539static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 AV *av = (AV *)SvRV (arg [0]);
2543
2544 if (SvIVX (AvARRAY (av)[0]))
2545 {
2546 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop;
2549 }
2550 else
2551 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2553
2554 av_push (av, waiter);
2555
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule;
2558 frame->check = slf_check_signal_wait;
2559 }
2560}
2561
2562/*****************************************************************************/
2563/* Coro::AIO */
2564
2565#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2566
2567/* helper storage struct */
2568struct io_state
2569{
2570 int errorno;
2571 I32 laststype; /* U16 in 5.10.0 */
2572 int laststatval;
2573 Stat_t statcache;
2574};
2575
2576static void
2577coro_aio_callback (pTHX_ CV *cv)
2578{
2579 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG;
2581 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state));
2583
2584 av_extend (state, items - 1);
2585
2586 sv_upgrade (data_sv, SVt_PV);
2587 SvCUR_set (data_sv, sizeof (struct io_state));
2588 SvPOK_only (data_sv);
2589
2590 {
2591 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2592
2593 data->errorno = errno;
2594 data->laststype = PL_laststype;
2595 data->laststatval = PL_laststatval;
2596 data->statcache = PL_statcache;
2597 }
2598
2599 /* now build the result vector out of all the parameters and the data_sv */
2600 {
2601 int i;
2602
2603 for (i = 0; i < items; ++i)
2604 av_push (state, SvREFCNT_inc_NN (ST (i)));
2605 }
2606
2607 av_push (state, data_sv);
2608
2609 api_ready (aTHX_ coro);
2610 SvREFCNT_dec (coro);
2611 SvREFCNT_dec ((AV *)state);
2612}
2613
2614static int
2615slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2616{
2617 AV *state = (AV *)frame->data;
2618
2619 /* if we are about to throw, return early */
2620 /* this does not cancel the aio request, but at least */
2621 /* it quickly returns */
2622 if (CORO_THROW)
2623 return 0;
2624
2625 /* one element that is an RV? repeat! */
2626 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2627 return 1;
2628
2629 /* restore status */
2630 {
2631 SV *data_sv = av_pop (state);
2632 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2633
2634 errno = data->errorno;
2635 PL_laststype = data->laststype;
2636 PL_laststatval = data->laststatval;
2637 PL_statcache = data->statcache;
2638
2639 SvREFCNT_dec (data_sv);
2640 }
2641
2642 /* push result values */
2643 {
1850 dSP; 2644 dSP;
2645 int i;
1851 2646
2647 EXTEND (SP, AvFILLp (state) + 1);
2648 for (i = 0; i <= AvFILLp (state); ++i)
2649 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2650
2651 PUTBACK;
2652 }
2653
2654 return 0;
2655}
2656
2657static void
2658slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2659{
2660 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2661 SV *coro_hv = SvRV (coro_current);
2662 struct coro *coro = SvSTATE_hv (coro_hv);
2663
2664 /* put our coroutine id on the state arg */
2665 av_push (state, SvREFCNT_inc_NN (coro_hv));
2666
2667 /* first see whether we have a non-zero priority and set it as AIO prio */
2668 if (coro->prio)
2669 {
2670 dSP;
2671
2672 static SV *prio_cv;
2673 static SV *prio_sv;
2674
2675 if (expect_false (!prio_cv))
2676 {
2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2678 prio_sv = newSViv (0);
2679 }
2680
2681 PUSHMARK (SP);
2682 sv_setiv (prio_sv, coro->prio);
2683 XPUSHs (prio_sv);
2684
2685 PUTBACK;
2686 call_sv (prio_cv, G_VOID | G_DISCARD);
2687 }
2688
2689 /* now call the original request */
2690 {
2691 dSP;
2692 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2693 int i;
2694
1852 PUSHMARK (SP); 2695 PUSHMARK (SP);
1853 2696
1854 EXTEND (SP, 3); 2697 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2698 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2699
1859 RETURNOP (ssl_restore.op_first); 2700 for (i = 0; i < items; ++i)
1860} 2701 PUSHs (arg [i]);
1861 2702
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2703 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2705
1864/* declare prototype */ 2706 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2707 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2708 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2709 }
1922 2710
1923 TRANSFER (ta, 0); 2711 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2712 frame->data = (void *)state;
1925 2713 frame->prepare = prepare_schedule;
1926skip: 2714 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2715}
1932 2716
1933static void 2717static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2718coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2719{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2720 dXSARGS;
1937 2721
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2722 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2723
1941 /* we patch the op, and then re-run the whole call */ 2724 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2725}
2726
2727/*****************************************************************************/
1956 2728
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2730
1959PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
1960 2732
1961BOOT: 2733BOOT:
1962{ 2734{
1963#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2736# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2737 coro_thx = PERL_GET_CONTEXT;
1967# endif 2738# endif
1968#endif 2739#endif
1969 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
… …
1990 main_top_env = PL_top_env; 2761 main_top_env = PL_top_env;
1991 2762
1992 while (main_top_env->je_prev) 2763 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2764 main_top_env = main_top_env->je_prev;
1994 2765
2766 {
2767 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2768
2769 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2770 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2771
2772 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2773 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2774 }
2775
1995 coroapi.ver = CORO_API_VERSION; 2776 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2777 coroapi.rev = CORO_API_REVISION;
2778
1997 coroapi.transfer = api_transfer; 2779 coroapi.transfer = api_transfer;
2780
2781 coroapi.sv_state = SvSTATE_;
2782 coroapi.execute_slf = api_execute_slf;
2783 coroapi.prepare_nop = prepare_nop;
2784 coroapi.prepare_schedule = prepare_schedule;
2785 coroapi.prepare_cede = prepare_cede;
2786 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 2787
1999 { 2788 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2790
2002 if (!svp) croak ("Time::HiRes is required"); 2791 if (!svp) croak ("Time::HiRes is required");
… …
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2009} 2798}
2010 2799
2011SV * 2800SV *
2012new (char *klass, ...) 2801new (char *klass, ...)
2802 ALIAS:
2803 Coro::new = 1
2013 CODE: 2804 CODE:
2014{ 2805{
2015 struct coro *coro; 2806 struct coro *coro;
2016 MAGIC *mg; 2807 MAGIC *mg;
2017 HV *hv; 2808 HV *hv;
2809 CV *cb;
2018 int i; 2810 int i;
2811
2812 if (items > 1)
2813 {
2814 cb = coro_sv_2cv (aTHX_ ST (1));
2815
2816 if (!ix)
2817 {
2818 if (CvISXSUB (cb))
2819 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2820
2821 if (!CvROOT (cb))
2822 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2823 }
2824 }
2019 2825
2020 Newz (0, coro, 1, struct coro); 2826 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 2827 coro->args = newAV ();
2022 coro->flags = CF_NEW; 2828 coro->flags = CF_NEW;
2023 2829
… …
2028 coro->hv = hv = newHV (); 2834 coro->hv = hv = newHV ();
2029 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2835 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2030 mg->mg_flags |= MGf_DUP; 2836 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2837 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 2838
2839 if (items > 1)
2840 {
2033 av_extend (coro->args, items - 1); 2841 av_extend (coro->args, items - 1 + ix - 1);
2842
2843 if (ix)
2844 {
2845 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2846 cb = cv_coro_run;
2847 }
2848
2849 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2850
2034 for (i = 1; i < items; i++) 2851 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 2852 av_push (coro->args, newSVsv (ST (i)));
2853 }
2036} 2854}
2037 OUTPUT: 2855 OUTPUT:
2038 RETVAL 2856 RETVAL
2039 2857
2040void 2858void
2041_set_stacklevel (...) 2859transfer (...)
2042 ALIAS: 2860 PROTOTYPE: $$
2043 Coro::State::transfer = 1 2861 CODE:
2044 Coro::schedule = 2 2862 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 2863
2050bool 2864bool
2051_destroy (SV *coro_sv) 2865_destroy (SV *coro_sv)
2052 CODE: 2866 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2867 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2060 CODE: 2874 CODE:
2061 _exit (code); 2875 _exit (code);
2062 2876
2063int 2877int
2064cctx_stacksize (int new_stacksize = 0) 2878cctx_stacksize (int new_stacksize = 0)
2879 PROTOTYPE: ;$
2065 CODE: 2880 CODE:
2066 RETVAL = cctx_stacksize; 2881 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 2882 if (new_stacksize)
2068 { 2883 {
2069 cctx_stacksize = new_stacksize; 2884 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 2887 OUTPUT:
2073 RETVAL 2888 RETVAL
2074 2889
2075int 2890int
2076cctx_max_idle (int max_idle = 0) 2891cctx_max_idle (int max_idle = 0)
2892 PROTOTYPE: ;$
2077 CODE: 2893 CODE:
2078 RETVAL = cctx_max_idle; 2894 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 2895 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 2896 cctx_max_idle = max_idle;
2081 OUTPUT: 2897 OUTPUT:
2082 RETVAL 2898 RETVAL
2083 2899
2084int 2900int
2085cctx_count () 2901cctx_count ()
2902 PROTOTYPE:
2086 CODE: 2903 CODE:
2087 RETVAL = cctx_count; 2904 RETVAL = cctx_count;
2088 OUTPUT: 2905 OUTPUT:
2089 RETVAL 2906 RETVAL
2090 2907
2091int 2908int
2092cctx_idle () 2909cctx_idle ()
2910 PROTOTYPE:
2093 CODE: 2911 CODE:
2094 RETVAL = cctx_idle; 2912 RETVAL = cctx_idle;
2095 OUTPUT: 2913 OUTPUT:
2096 RETVAL 2914 RETVAL
2097 2915
2098void 2916void
2099list () 2917list ()
2918 PROTOTYPE:
2100 PPCODE: 2919 PPCODE:
2101{ 2920{
2102 struct coro *coro; 2921 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 2922 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 2923 if (coro->hv)
… …
2166 2985
2167void 2986void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 2987throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 2988 PROTOTYPE: $;$
2170 CODE: 2989 CODE:
2990{
2991 struct coro *current = SvSTATE_current;
2992 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 2993 SvREFCNT_dec (*throwp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2994 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2995}
2173 2996
2174void 2997void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2998api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2999 PROTOTYPE: $;$
3000 C_ARGS: aTHX_ coro, flags
2176 3001
2177SV * 3002SV *
2178has_cctx (Coro::State coro) 3003has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 3004 PROTOTYPE: $
2180 CODE: 3005 CODE:
… …
2204 OUTPUT: 3029 OUTPUT:
2205 RETVAL 3030 RETVAL
2206 3031
2207void 3032void
2208force_cctx () 3033force_cctx ()
3034 PROTOTYPE:
2209 CODE: 3035 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 3036 SvSTATE_current->cctx->idle_sp = 0;
2212 3037
2213void 3038void
2214swap_defsv (Coro::State self) 3039swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 3040 PROTOTYPE: $
2216 ALIAS: 3041 ALIAS:
2217 swap_defav = 1 3042 swap_defav = 1
2218 CODE: 3043 CODE:
2219 if (!self->slot) 3044 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 3045 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 3046 else
2222 { 3047 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3048 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3049 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 3050
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 3051 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 3052 }
2228 3053
3054
2229MODULE = Coro::State PACKAGE = Coro 3055MODULE = Coro::State PACKAGE = Coro
2230 3056
2231BOOT: 3057BOOT:
2232{ 3058{
2233 int i; 3059 int i;
2234 3060
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3061 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3062 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 3063 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3064 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3065 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2240 SvREADONLY_on (coro_current); 3066 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3067 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3068 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3069
3070 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3071 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3072 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3073 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2241 3074
2242 coro_stash = gv_stashpv ("Coro", TRUE); 3075 coro_stash = gv_stashpv ("Coro", TRUE);
2243 3076
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3077 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3078 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2253 3086
2254 { 3087 {
2255 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3088 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2256 3089
2257 coroapi.schedule = api_schedule; 3090 coroapi.schedule = api_schedule;
3091 coroapi.schedule_to = api_schedule_to;
2258 coroapi.cede = api_cede; 3092 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 3093 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 3094 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 3095 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 3096 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 3097 coroapi.current = coro_current;
2264 3098
2265 GCoroAPI = &coroapi; 3099 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 3100 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 3101 SvREADONLY_on (sv);
2268 } 3102 }
2269} 3103}
3104
3105void
3106terminate (...)
3107 CODE:
3108 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3109
3110void
3111schedule (...)
3112 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3114
3115void
3116schedule_to (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3119
3120void
3121cede_to (...)
3122 CODE:
3123 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3124
3125void
3126cede (...)
3127 CODE:
3128 CORO_EXECUTE_SLF_XS (slf_init_cede);
3129
3130void
3131cede_notself (...)
3132 CODE:
3133 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3134
3135void
3136_cancel (Coro::State self)
3137 CODE:
3138 coro_state_destroy (aTHX_ self);
3139 coro_call_on_destroy (aTHX_ self);
2270 3140
2271void 3141void
2272_set_current (SV *current) 3142_set_current (SV *current)
2273 PROTOTYPE: $ 3143 PROTOTYPE: $
2274 CODE: 3144 CODE:
… …
2277 3147
2278void 3148void
2279_set_readyhook (SV *hook) 3149_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3150 PROTOTYPE: $
2281 CODE: 3151 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3152 SvREFCNT_dec (coro_readyhook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3153 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 3154
2287int 3155int
2288prio (Coro::State coro, int newprio = 0) 3156prio (Coro::State coro, int newprio = 0)
3157 PROTOTYPE: $;$
2289 ALIAS: 3158 ALIAS:
2290 nice = 1 3159 nice = 1
2291 CODE: 3160 CODE:
2292{ 3161{
2293 RETVAL = coro->prio; 3162 RETVAL = coro->prio;
… …
2308 3177
2309SV * 3178SV *
2310ready (SV *self) 3179ready (SV *self)
2311 PROTOTYPE: $ 3180 PROTOTYPE: $
2312 CODE: 3181 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3182 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3183 OUTPUT:
2315 RETVAL 3184 RETVAL
2316 3185
2317int 3186int
2318nready (...) 3187nready (...)
… …
2320 CODE: 3189 CODE:
2321 RETVAL = coro_nready; 3190 RETVAL = coro_nready;
2322 OUTPUT: 3191 OUTPUT:
2323 RETVAL 3192 RETVAL
2324 3193
2325# for async_pool speedup
2326void 3194void
2327_pool_1 (SV *cb) 3195_pool_handler (...)
2328 CODE: 3196 CODE:
2329{ 3197 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3198
2337 if (!invoke) 3199void
3200async_pool (SV *cv, ...)
3201 PROTOTYPE: &@
3202 PPCODE:
3203{
3204 HV *hv = (HV *)av_pop (av_async_pool);
3205 AV *av = newAV ();
3206 SV *cb = ST (0);
3207 int i;
3208
3209 av_extend (av, items - 2);
3210 for (i = 1; i < items; ++i)
3211 av_push (av, SvREFCNT_inc_NN (ST (i)));
3212
3213 if ((SV *)hv == &PL_sv_undef)
2338 { 3214 {
2339 SV *old = PL_diehook; 3215 PUSHMARK (SP);
2340 PL_diehook = 0; 3216 EXTEND (SP, 2);
2341 SvREFCNT_dec (old); 3217 PUSHs (sv_Coro);
2342 croak ("\3async_pool terminate\2\n"); 3218 PUSHs ((SV *)cv_pool_handler);
3219 PUTBACK;
3220 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3221 SPAGAIN;
3222
3223 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2343 } 3224 }
2344 3225
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 3226 {
2358 av_fill (defav, len - 1); 3227 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 3228
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3229 assert (!coro->invoke_cb);
3230 assert (!coro->invoke_av);
3231 coro->invoke_cb = SvREFCNT_inc (cb);
3232 coro->invoke_av = av;
2361 } 3233 }
2362 3234
3235 api_ready (aTHX_ (SV *)hv);
3236
3237 if (GIMME_V != G_VOID)
3238 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3239 else
2363 SvREFCNT_dec (invoke); 3240 SvREFCNT_dec (hv);
2364} 3241}
2365 3242
2366void 3243SV *
2367_pool_2 (SV *cb) 3244rouse_cb ()
3245 PROTOTYPE:
2368 CODE: 3246 CODE:
2369{ 3247 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3248 OUTPUT:
2442 RETVAL 3249 RETVAL
2443 3250
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3251void
2450_get_state (SV *self) 3252rouse_wait (...)
3253 PROTOTYPE: ;$
2451 PPCODE: 3254 PPCODE:
2452{ 3255 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460 3256
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465 3257
2466 av_extend (av, AvFILLp (defav) + 1 + 1); 3258MODULE = Coro::State PACKAGE = PerlIO::cede
2467 3259
2468 for (i = 0; i <= AvFILLp (defav); ++i) 3260BOOT:
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3261 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2470 3262
2471 av_push (av, data_sv);
2472 3263
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3264MODULE = Coro::State PACKAGE = Coro::Semaphore
2474 3265
2475 api_ready (self); 3266SV *
2476} 3267new (SV *klass, SV *count = 0)
3268 CODE:
3269 RETVAL = sv_bless (
3270 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3271 GvSTASH (CvGV (cv))
3272 );
3273 OUTPUT:
3274 RETVAL
3275
3276# helper for Coro::Channel
3277SV *
3278_alloc (int count)
3279 CODE:
3280 RETVAL = coro_waitarray_new (aTHX_ count);
3281 OUTPUT:
3282 RETVAL
3283
3284SV *
3285count (SV *self)
3286 CODE:
3287 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3288 OUTPUT:
3289 RETVAL
2477 3290
2478void 3291void
2479_set_state (SV *state) 3292up (SV *self, int adjust = 1)
2480 PROTOTYPE: $ 3293 ALIAS:
3294 adjust = 1
3295 CODE:
3296 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3297
3298void
3299down (...)
3300 CODE:
3301 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3302
3303void
3304wait (...)
3305 CODE:
3306 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3307
3308void
3309try (SV *self)
3310 PPCODE:
3311{
3312 AV *av = (AV *)SvRV (self);
3313 SV *count_sv = AvARRAY (av)[0];
3314 IV count = SvIVX (count_sv);
3315
3316 if (count > 0)
3317 {
3318 --count;
3319 SvIVX (count_sv) = count;
3320 XSRETURN_YES;
3321 }
3322 else
3323 XSRETURN_NO;
3324}
3325
3326void
3327waiters (SV *self)
3328 PPCODE:
3329{
3330 AV *av = (AV *)SvRV (self);
3331 int wcount = AvFILLp (av) + 1 - 1;
3332
3333 if (GIMME_V == G_SCALAR)
3334 XPUSHs (sv_2mortal (newSViv (wcount)));
3335 else
3336 {
3337 int i;
3338 EXTEND (SP, wcount);
3339 for (i = 1; i <= wcount; ++i)
3340 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3341 }
3342}
3343
3344MODULE = Coro::State PACKAGE = Coro::Signal
3345
3346SV *
3347new (SV *klass)
2481 PPCODE: 3348 CODE:
3349 RETVAL = sv_bless (
3350 coro_waitarray_new (aTHX_ 0),
3351 GvSTASH (CvGV (cv))
3352 );
3353 OUTPUT:
3354 RETVAL
3355
3356void
3357wait (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3360
3361void
3362broadcast (SV *self)
3363 CODE:
2482{ 3364{
2483 AV *av = (AV *)SvRV (state); 3365 AV *av = (AV *)SvRV (self);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3366 coro_signal_wake (aTHX_ av, AvFILLp (av));
2485 int i; 3367}
2486 3368
2487 errno = data->errorno; 3369void
2488 PL_laststype = data->laststype; 3370send (SV *self)
2489 PL_laststatval = data->laststatval; 3371 CODE:
2490 PL_statcache = data->statcache; 3372{
3373 AV *av = (AV *)SvRV (self);
2491 3374
2492 EXTEND (SP, AvFILLp (av)); 3375 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3376 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3377 else
3378 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3379}
3380
3381IV
3382awaited (SV *self)
3383 CODE:
3384 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3385 OUTPUT:
3386 RETVAL
2496 3387
2497 3388
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3389MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3390
2500BOOT: 3391BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3392 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3393
2503SV * 3394void
2504_schedule (...) 3395_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3396 CODE:
2507{ 3397{
2508 static int incede; 3398 static int incede;
2509 3399
2510 api_cede_notself (); 3400 api_cede_notself (aTHX);
2511 3401
2512 ++incede; 3402 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3403 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3404 ;
2515 3405
2516 sv_setsv (sv_activity, &PL_sv_undef); 3406 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3407 if (coro_nready >= incede)
2518 { 3408 {
2519 PUSHMARK (SP); 3409 PUSHMARK (SP);
2520 PUTBACK; 3410 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3411 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3412 }
2524 3413
2525 --incede; 3414 --incede;
2526} 3415}
2527 3416
2528 3417
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3418MODULE = Coro::State PACKAGE = Coro::AIO
2530 3419
2531BOOT: 3420void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3421_register (char *target, char *proto, SV *req)
3422 CODE:
3423{
3424 CV *req_cv = coro_sv_2cv (aTHX_ req);
3425 /* newXSproto doesn't return the CV on 5.8 */
3426 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3427 sv_setpv ((SV *)slf_cv, proto);
3428 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3429}
2533 3430

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