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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.317 by root, Thu Nov 20 06:28:52 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
… …
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. */
121#if __GNUC__ >= 4 127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 129# define STACKLEVEL __builtin_frame_address (0)
123#else 130#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
132# define STACKLEVEL ((void *)&stacklevel)
125#endif 133#endif
126 134
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 136
129#if __GNUC__ >= 3 137#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
141 149
142#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
143 151
144#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
145 154
146#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
147# if CORO_PTHREAD 156# if CORO_PTHREAD
148static void *coro_thx; 157static void *coro_thx;
149# endif 158# endif
150#endif 159#endif
151 160
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static 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);
163 166
164static U32 cctx_gen; 167static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
… …
176static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
177 180
178/* async_pool helper stuff */ 181/* async_pool helper stuff */
179static SV *sv_pool_rss; 182static SV *sv_pool_rss;
180static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
181static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
182 189
183/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
184static SV *sv_activity; 191static SV *sv_activity;
185 192
186static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
241/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
242struct coro { 249struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 251 coro_cctx *cctx;
245 252
246 /* process data */ 253 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 254 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 255 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
250 257
258 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 263 void (*on_destroy)(pTHX_ struct coro *coro);
256 264
257 /* statistics */ 265 /* statistics */
258 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
259 267
260 /* coro process data */ 268 /* coro process data */
261 int prio; 269 int prio;
262 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
263 272
264 /* async_pool */ 273 /* async_pool */
265 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
266 277
267 /* linked list */ 278 /* linked list */
268 struct coro *next, *prev; 279 struct coro *next, *prev;
269}; 280};
270 281
271typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
273 284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 288static struct CoroSLF slf_frame; /* the current slf frame */
275 289
276/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
277 291
278#define PRIO_MAX 3 292#define PRIO_MAX 3
… …
284 298
285/* for Coro.pm */ 299/* for Coro.pm */
286static SV *coro_current; 300static SV *coro_current;
287static SV *coro_readyhook; 301static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
303static CV *cv_coro_run, *cv_coro_terminate;
289static struct coro *coro_first; 304static struct coro *coro_first;
290#define coro_nready coroapi.nready 305#define coro_nready coroapi.nready
291 306
292/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
293 308
… …
317#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create); 334 get_hv (name, create);
320#endif 335#endif
321 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
322} 346}
323 347
324static AV * 348static AV *
325coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
326{ 350{
… …
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 405
382 return 0; 406 return 0;
383} 407}
384 408
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
386#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 411
388static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 413 0, 0, 0, 0,
390 coro_cv_free 414 coro_cv_free
391}; 415};
392 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
393#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \ 423 (expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 424 ? CORO_MAGIC_NN (sv, type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0 425 : 0)
399 426
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402 429
403INLINE struct coro * 430INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
405{ 432{
406 HV *stash; 433 HV *stash;
… …
424 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
425} 452}
426 453
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428 455
429/* fastert than SvSTATE, but expects a coroutine hv */ 456/* faster than SvSTATE, but expects a coroutine hv */
430INLINE struct coro * 457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 459
442/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
443static void 461static void
444get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
… …
451 else 469 else
452 { 470 {
453#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
460#else 478#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
513 } 531 }
514 532
515 PUTBACK; 533 PUTBACK;
516 } 534 }
517 535
518 slf_frame = c->slf_frame; 536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
519} 538}
520 539
521static void 540static void
522save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
523{ 542{
543 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 544 c->slf_frame = slf_frame;
525 545
526 { 546 {
527 dSP; 547 dSP;
528 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
… …
603 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
606 */ 626 */
607#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
609#else 629#else
610static void 630static void
611coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
612{ 632{
613 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 697 Safefree (PL_retstack);
678#endif 698#endif
679} 699}
680 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
681static size_t 710static size_t
682coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
683{ 712{
684 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
685 714
686 if (coro->mainstack) 715 if (coro->mainstack)
687 { 716 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
692 { 718 {
693 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
694 720 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 721 #undef SYM
698 } 722 }
699 else 723 else
700 slot = coro->slot;
701
702 if (slot)
703 { 724 {
704 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 728 }
716 } 729 }
717 730
718 return rss; 731 return rss;
719} 732}
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 834slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 835{
823 return 0; 836 return 0;
824} 837}
825 838
826static void 839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
828{ 843{
829 /* 844 /*
830 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
831 */ 846 */
… …
858 { 873 {
859 dSP; 874 dSP;
860 UNOP myop; 875 UNOP myop;
861 876
862 Zero (&myop, 1, UNOP); 877 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
865 881
866 PUSHMARK (SP); 882 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 884 PUTBACK;
869 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 887 }
873 888
874 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 891 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
879} 905}
880 906
881static void 907static void
882coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
883{ 909{
… …
907 933
908 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
910 936
911 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
913 941
914 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
915} 943}
916 944
917INLINE void 945INLINE void
… …
1004 SAVETMPS; 1032 SAVETMPS;
1005 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1034 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1036 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1038 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1041 SPAGAIN;
1014 FREETMPS; 1042 FREETMPS;
… …
1046 1074
1047 TAINT_NOT; 1075 TAINT_NOT;
1048 return 0; 1076 return 0;
1049} 1077}
1050 1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1051static void 1082static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1084{
1054 ta->prev = (struct coro *)cctx; 1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1055 ta->next = 0; 1086 ta->next = 0;
1056} 1087}
1057 1088
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1089static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1091{
1061/* also initialises PL_top_env */ 1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1098static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1100{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1069 1102
1070 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1072 1105
1073 Zero (&myop, 1, UNOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1110
1077 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1113 cctx_ssl_frame = slf_frame;
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1081 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1117}
1086 1118
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1119/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1120INLINE void
1089transfer_tail (pTHX) 1121transfer_tail (pTHX)
… …
1116 transfer_tail (aTHX); 1148 transfer_tail (aTHX);
1117 1149
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1121 1157
1122 /* 1158 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
… …
1276/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1277 1313
1278static void 1314static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1281 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1282 { 1320 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285 1323
… …
1295#endif 1333#endif
1296 } 1334 }
1297} 1335}
1298 1336
1299/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1300static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1340{
1303 dSTACKLEVEL; 1341 dSTACKLEVEL;
1304 1342
1305 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1344 if (expect_false (!next))
1307 { 1345 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1348 }
1311 else if (expect_true (prev != next)) 1349 else if (expect_true (prev != next))
1312 { 1350 {
1313 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
… …
1338 1376
1339 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1340 1378
1341 /* possibly untie and reuse the cctx */ 1379 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1380 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1381 prev__cctx->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx 1383 && !force_cctx
1346 )) 1384 ))
1347 { 1385 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1415 1453
1416 coro->slot = 0; 1454 coro->slot = 0;
1417 } 1455 }
1418 1456
1419 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1421 1461
1422 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1425 1465
… …
1479 1519
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1482} 1522}
1483 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1484/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1485 1548
1486INLINE void 1549INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1550coro_enq (pTHX_ struct coro *coro)
1488{ 1551{
… …
1531 ENTER; 1594 ENTER;
1532 SAVETMPS; 1595 SAVETMPS;
1533 1596
1534 PUSHMARK (SP); 1597 PUSHMARK (SP);
1535 PUTBACK; 1598 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1600
1539 FREETMPS; 1601 FREETMPS;
1540 LEAVE; 1602 LEAVE;
1541 } 1603 }
1542 1604
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1551{ 1613{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1615}
1554 1616
1617/* expects to own a reference to next->hv */
1555INLINE void 1618INLINE void
1619prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, (SV *)next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1634static void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1557{ 1636{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;) 1637 for (;;)
1561 { 1638 {
1562 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1563 1640
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv)) 1641 if (expect_true (next_sv))
1566 { 1642 {
1643 struct coro *next = SvSTATE_hv (next_sv);
1644
1645 /* cannot transfer to destroyed coros, skip and look for next */
1646 if (expect_false (next->flags & CF_DESTROYED))
1647 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1648 else
1649 {
1650 next->flags &= ~CF_READY;
1651 --coro_nready;
1652
1653 return prepare_schedule_to (aTHX_ ta, next);
1654 }
1655 }
1656 else
1657 {
1658 /* nothing to schedule: call the idle handler */
1567 dSP; 1659 dSP;
1568 1660
1569 ENTER; 1661 ENTER;
1570 SAVETMPS; 1662 SAVETMPS;
1571 1663
1572 PUSHMARK (SP); 1664 PUSHMARK (SP);
1573 PUTBACK; 1665 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1666 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1667
1577 FREETMPS; 1668 FREETMPS;
1578 LEAVE; 1669 LEAVE;
1579 continue;
1580 } 1670 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 } 1671 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current);
1598 ta->prev = SvSTATE_hv (prev_sv);
1599 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv);
1603
1604 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv;
1606} 1672}
1607 1673
1608INLINE void 1674INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1676{
… …
1631{ 1697{
1632 struct coro_transfer_args ta; 1698 struct coro_transfer_args ta;
1633 1699
1634 prepare_schedule (aTHX_ &ta); 1700 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1701 TRANSFER (ta, 1);
1702}
1703
1704static void
1705api_schedule_to (pTHX_ SV *coro_sv)
1706{
1707 struct coro_transfer_args ta;
1708 struct coro *next = SvSTATE (coro_sv);
1709
1710 SvREFCNT_inc_NN (coro_sv);
1711 prepare_schedule_to (aTHX_ &ta, next);
1636} 1712}
1637 1713
1638static int 1714static int
1639api_cede (pTHX) 1715api_cede (pTHX)
1640{ 1716{
… …
1687 if (coro->flags & CF_RUNNING) 1763 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1764 PL_runops = RUNOPS_DEFAULT;
1689 else 1765 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1766 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1767 }
1768}
1769
1770/*****************************************************************************/
1771/* async pool handler */
1772
1773static int
1774slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1775{
1776 HV *hv = (HV *)SvRV (coro_current);
1777 struct coro *coro = (struct coro *)frame->data;
1778
1779 if (!coro->invoke_cb)
1780 return 1; /* loop till we have invoke */
1781 else
1782 {
1783 hv_store (hv, "desc", sizeof ("desc") - 1,
1784 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1785
1786 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1787
1788 {
1789 dSP;
1790 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1791 PUTBACK;
1792 }
1793
1794 SvREFCNT_dec (GvAV (PL_defgv));
1795 GvAV (PL_defgv) = coro->invoke_av;
1796 coro->invoke_av = 0;
1797
1798 return 0;
1799 }
1800}
1801
1802static void
1803slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1804{
1805 HV *hv = (HV *)SvRV (coro_current);
1806 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807
1808 if (expect_true (coro->saved_deffh))
1809 {
1810 /* subsequent iteration */
1811 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1812 coro->saved_deffh = 0;
1813
1814 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1815 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1816 {
1817 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1818 coro->invoke_av = newAV ();
1819
1820 frame->prepare = prepare_nop;
1821 }
1822 else
1823 {
1824 av_clear (GvAV (PL_defgv));
1825 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1826
1827 coro->prio = 0;
1828
1829 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1830 api_trace (aTHX_ coro_current, 0);
1831
1832 frame->prepare = prepare_schedule;
1833 av_push (av_async_pool, SvREFCNT_inc (hv));
1834 }
1835 }
1836 else
1837 {
1838 /* first iteration, simply fall through */
1839 frame->prepare = prepare_nop;
1840 }
1841
1842 frame->check = slf_check_pool_handler;
1843 frame->data = (void *)coro;
1844}
1845
1846/*****************************************************************************/
1847/* rouse callback */
1848
1849#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1850
1851static void
1852coro_rouse_callback (pTHX_ CV *cv)
1853{
1854 dXSARGS;
1855 SV *data = (SV *)GENSUB_ARG;
1856
1857 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858 {
1859 /* first call, set args */
1860 AV *av = newAV ();
1861 SV *coro = SvRV (data);
1862
1863 SvRV_set (data, (SV *)av);
1864 api_ready (aTHX_ coro);
1865 SvREFCNT_dec (coro);
1866
1867 /* better take a full copy of the arguments */
1868 while (items--)
1869 av_store (av, items, newSVsv (ST (items)));
1870 }
1871
1872 XSRETURN_EMPTY;
1873}
1874
1875static int
1876slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1877{
1878 SV *data = (SV *)frame->data;
1879
1880 if (CORO_THROW)
1881 return 0;
1882
1883 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1884 return 1;
1885
1886 /* now push all results on the stack */
1887 {
1888 dSP;
1889 AV *av = (AV *)SvRV (data);
1890 int i;
1891
1892 EXTEND (SP, AvFILLp (av) + 1);
1893 for (i = 0; i <= AvFILLp (av); ++i)
1894 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895
1896 /* we have stolen the elements, so ste length to zero and free */
1897 AvFILLp (av) = -1;
1898 av_undef (av);
1899
1900 PUTBACK;
1901 }
1902
1903 return 0;
1904}
1905
1906static void
1907slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1908{
1909 SV *cb;
1910
1911 if (items)
1912 cb = arg [0];
1913 else
1914 {
1915 struct coro *coro = SvSTATE_current;
1916
1917 if (!coro->rouse_cb)
1918 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1919
1920 cb = sv_2mortal (coro->rouse_cb);
1921 coro->rouse_cb = 0;
1922 }
1923
1924 if (!SvROK (cb)
1925 || SvTYPE (SvRV (cb)) != SVt_PVCV
1926 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927 croak ("Coro::rouse_wait called with illegal callback argument,");
1928
1929 {
1930 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1931 SV *data = (SV *)GENSUB_ARG;
1932
1933 frame->data = (void *)data;
1934 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935 frame->check = slf_check_rouse_wait;
1936 }
1937}
1938
1939static SV *
1940coro_new_rouse_cb (pTHX)
1941{
1942 HV *hv = (HV *)SvRV (coro_current);
1943 struct coro *coro = SvSTATE_hv (hv);
1944 SV *data = newRV_inc ((SV *)hv);
1945 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1946
1947 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948 SvREFCNT_dec (data); /* magicext increases the refcount */
1949
1950 SvREFCNT_dec (coro->rouse_cb);
1951 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1952
1953 return cb;
1954}
1955
1956/*****************************************************************************/
1957/* schedule-like-function opcode (SLF) */
1958
1959static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1960static const CV *slf_cv;
1961static SV **slf_argv;
1962static int slf_argc, slf_arga; /* count, allocated */
1963static I32 slf_ax; /* top of stack, for restore */
1964
1965/* this restores the stack in the case we patched the entersub, to */
1966/* recreate the stack frame as perl will on following calls */
1967/* since entersub cleared the stack */
1968static OP *
1969pp_restore (pTHX)
1970{
1971 int i;
1972 SV **SP = PL_stack_base + slf_ax;
1973
1974 PUSHMARK (SP);
1975
1976 EXTEND (SP, slf_argc + 1);
1977
1978 for (i = 0; i < slf_argc; ++i)
1979 PUSHs (sv_2mortal (slf_argv [i]));
1980
1981 PUSHs ((SV *)CvGV (slf_cv));
1982
1983 RETURNOP (slf_restore.op_first);
1984}
1985
1986static void
1987slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1988{
1989 SV **arg = (SV **)slf_frame.data;
1990
1991 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1992}
1993
1994static void
1995slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 if (items != 2)
1998 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1999
2000 frame->prepare = slf_prepare_transfer;
2001 frame->check = slf_check_nop;
2002 frame->data = (void *)arg; /* let's hope it will stay valid */
2003}
2004
2005static void
2006slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_nop;
2010}
2011
2012static void
2013slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2014{
2015 struct coro *next = (struct coro *)slf_frame.data;
2016
2017 SvREFCNT_inc_NN (next->hv);
2018 prepare_schedule_to (aTHX_ ta, next);
2019}
2020
2021static void
2022slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2023{
2024 if (!items)
2025 croak ("Coro::schedule_to expects a coroutine argument, caught");
2026
2027 frame->data = (void *)SvSTATE (arg [0]);
2028 frame->prepare = slf_prepare_schedule_to;
2029 frame->check = slf_check_nop;
2030}
2031
2032static void
2033slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2034{
2035 api_ready (aTHX_ SvRV (coro_current));
2036
2037 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2038}
2039
2040static void
2041slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 frame->prepare = prepare_cede;
2044 frame->check = slf_check_nop;
2045}
2046
2047static void
2048slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{
2050 frame->prepare = prepare_cede_notself;
2051 frame->check = slf_check_nop;
2052}
2053
2054/*
2055 * these not obviously related functions are all rolled into one
2056 * function to increase chances that they all will call transfer with the same
2057 * stack offset
2058 * SLF stands for "schedule-like-function".
2059 */
2060static OP *
2061pp_slf (pTHX)
2062{
2063 I32 checkmark; /* mark SP to see how many elements check has pushed */
2064
2065 /* set up the slf frame, unless it has already been set-up */
2066 /* the latter happens when a new coro has been started */
2067 /* or when a new cctx was attached to an existing coroutine */
2068 if (expect_true (!slf_frame.prepare))
2069 {
2070 /* first iteration */
2071 dSP;
2072 SV **arg = PL_stack_base + TOPMARK + 1;
2073 int items = SP - arg; /* args without function object */
2074 SV *gv = *sp;
2075
2076 /* do a quick consistency check on the "function" object, and if it isn't */
2077 /* for us, divert to the real entersub */
2078 if (SvTYPE (gv) != SVt_PVGV
2079 || !GvCV (gv)
2080 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2081 return PL_ppaddr[OP_ENTERSUB](aTHX);
2082
2083 if (!(PL_op->op_flags & OPf_STACKED))
2084 {
2085 /* ampersand-form of call, use @_ instead of stack */
2086 AV *av = GvAV (PL_defgv);
2087 arg = AvARRAY (av);
2088 items = AvFILLp (av) + 1;
2089 }
2090
2091 /* now call the init function, which needs to set up slf_frame */
2092 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2093 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2094
2095 /* pop args */
2096 SP = PL_stack_base + POPMARK;
2097
2098 PUTBACK;
2099 }
2100
2101 /* now that we have a slf_frame, interpret it! */
2102 /* we use a callback system not to make the code needlessly */
2103 /* complicated, but so we can run multiple perl coros from one cctx */
2104
2105 do
2106 {
2107 struct coro_transfer_args ta;
2108
2109 slf_frame.prepare (aTHX_ &ta);
2110 TRANSFER (ta, 0);
2111
2112 checkmark = PL_stack_sp - PL_stack_base;
2113 }
2114 while (slf_frame.check (aTHX_ &slf_frame));
2115
2116 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2117
2118 /* exception handling */
2119 if (expect_false (CORO_THROW))
2120 {
2121 SV *exception = sv_2mortal (CORO_THROW);
2122
2123 CORO_THROW = 0;
2124 sv_setsv (ERRSV, exception);
2125 croak (0);
2126 }
2127
2128 /* return value handling - mostly like entersub */
2129 /* make sure we put something on the stack in scalar context */
2130 if (GIMME_V == G_SCALAR)
2131 {
2132 dSP;
2133 SV **bot = PL_stack_base + checkmark;
2134
2135 if (sp == bot) /* too few, push undef */
2136 bot [1] = &PL_sv_undef;
2137 else if (sp != bot + 1) /* too many, take last one */
2138 bot [1] = *sp;
2139
2140 SP = bot + 1;
2141
2142 PUTBACK;
2143 }
2144
2145 return NORMAL;
2146}
2147
2148static void
2149api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2150{
2151 int i;
2152 SV **arg = PL_stack_base + ax;
2153 int items = PL_stack_sp - arg + 1;
2154
2155 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2156
2157 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2158 && PL_op->op_ppaddr != pp_slf)
2159 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2160
2161 CvFLAGS (cv) |= CVf_SLF;
2162 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2163 slf_cv = cv;
2164
2165 /* we patch the op, and then re-run the whole call */
2166 /* we have to put the same argument on the stack for this to work */
2167 /* and this will be done by pp_restore */
2168 slf_restore.op_next = (OP *)&slf_restore;
2169 slf_restore.op_type = OP_CUSTOM;
2170 slf_restore.op_ppaddr = pp_restore;
2171 slf_restore.op_first = PL_op;
2172
2173 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2174
2175 if (PL_op->op_flags & OPf_STACKED)
2176 {
2177 if (items > slf_arga)
2178 {
2179 slf_arga = items;
2180 free (slf_argv);
2181 slf_argv = malloc (slf_arga * sizeof (SV *));
2182 }
2183
2184 slf_argc = items;
2185
2186 for (i = 0; i < items; ++i)
2187 slf_argv [i] = SvREFCNT_inc (arg [i]);
2188 }
2189 else
2190 slf_argc = 0;
2191
2192 PL_op->op_ppaddr = pp_slf;
2193 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2194
2195 PL_op = (OP *)&slf_restore;
1692} 2196}
1693 2197
1694/*****************************************************************************/ 2198/*****************************************************************************/
1695/* PerlIO::cede */ 2199/* PerlIO::cede */
1696 2200
… …
1765 PerlIOBuf_get_cnt, 2269 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2270 PerlIOBuf_set_ptrcnt,
1767}; 2271};
1768 2272
1769/*****************************************************************************/ 2273/*****************************************************************************/
2274/* Coro::Semaphore & Coro::Signal */
1770 2275
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2276static SV *
1782pp_restore (pTHX) 2277coro_waitarray_new (pTHX_ int count)
1783{ 2278{
1784 SV **SP = PL_stack_base + slf_ax; 2279 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280 AV *av = newAV ();
2281 SV **ary;
1785 2282
1786 PUSHMARK (SP); 2283 /* unfortunately, building manually saves memory */
2284 Newx (ary, 2, SV *);
2285 AvALLOC (av) = ary;
2286 /*AvARRAY (av) = ary;*/
2287 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2288 AvMAX (av) = 1;
2289 AvFILLp (av) = 0;
2290 ary [0] = newSViv (count);
1787 2291
1788 EXTEND (SP, 3); 2292 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 2293}
1796 2294
1797static void 2295/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
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 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003 2296
2004static void 2297static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2298coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2299{
2007 SV *count_sv = AvARRAY (av)[0]; 2300 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2312 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2313 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2314 cb = av_shift (av);
2022 2315
2023 if (SvOBJECT (cb)) 2316 if (SvOBJECT (cb))
2317 {
2024 api_ready (aTHX_ cb); 2318 api_ready (aTHX_ cb);
2025 else 2319 --count;
2026 croak ("callbacks not yet supported"); 2320 }
2321 else if (SvTYPE (cb) == SVt_PVCV)
2322 {
2323 dSP;
2324 PUSHMARK (SP);
2325 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2326 PUTBACK;
2327 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2328 }
2027 2329
2028 SvREFCNT_dec (cb); 2330 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2331 }
2032} 2332}
2033 2333
2034static void 2334static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2335coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2337 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2338 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2339}
2040 2340
2041static int 2341static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2342slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2343{
2044 AV *av = (AV *)frame->data; 2344 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2345 SV *count_sv = AvARRAY (av)[0];
2046 2346
2347 /* if we are about to throw, don't actually acquire the lock, just throw */
2348 if (CORO_THROW)
2349 return 0;
2047 if (SvIVX (count_sv) > 0) 2350 else if (SvIVX (count_sv) > 0)
2048 { 2351 {
2049 SvSTATE_current->on_destroy = 0; 2352 SvSTATE_current->on_destroy = 0;
2353
2354 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2355 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2356 else
2357 coro_semaphore_adjust (aTHX_ av, 0);
2358
2051 return 0; 2359 return 0;
2052 } 2360 }
2053 else 2361 else
2054 { 2362 {
2055 int i; 2363 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2372 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2373 return 1;
2066 } 2374 }
2067} 2375}
2068 2376
2069static void 2377static int
2378slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2379{
2380 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2381}
2382
2383static int
2384slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2385{
2386 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2387}
2388
2389static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2390slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2391{
2072 AV *av = (AV *)SvRV (arg [0]); 2392 AV *av = (AV *)SvRV (arg [0]);
2073 2393
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2394 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2395 {
2076 frame->data = (void *)av; 2396 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2397 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2398 }
2080 else 2399 else
2081 { 2400 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2401 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2402
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2403 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2404 frame->prepare = prepare_schedule;
2086 2405
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2406 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2407 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2408 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2409 }
2410}
2092 2411
2412static void
2413slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2414{
2415 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2416 frame->check = slf_check_semaphore_down;
2417}
2094 2418
2419static void
2420slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 if (items >= 2)
2423 {
2424 /* callback form */
2425 AV *av = (AV *)SvRV (arg [0]);
2426 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2427
2428 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2429
2430 if (SvIVX (AvARRAY (av)[0]) > 0)
2431 coro_semaphore_adjust (aTHX_ av, 0);
2432
2433 frame->prepare = prepare_nop;
2434 frame->check = slf_check_nop;
2435 }
2436 else
2437 {
2438 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2439 frame->check = slf_check_semaphore_wait;
2440 }
2441}
2442
2443/* signal */
2444
2445static void
2446coro_signal_wake (pTHX_ AV *av, int count)
2447{
2448 SvIVX (AvARRAY (av)[0]) = 0;
2449
2450 /* now signal count waiters */
2451 while (count > 0 && AvFILLp (av) > 0)
2452 {
2453 SV *cb;
2454
2455 /* swap first two elements so we can shift a waiter */
2456 cb = AvARRAY (av)[0];
2457 AvARRAY (av)[0] = AvARRAY (av)[1];
2458 AvARRAY (av)[1] = cb;
2459
2460 cb = av_shift (av);
2461
2462 api_ready (aTHX_ cb);
2463 sv_setiv (cb, 0); /* signal waiter */
2464 SvREFCNT_dec (cb);
2465
2466 --count;
2467 }
2468}
2469
2470static int
2471slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 /* if we are about to throw, also stop waiting */
2474 return SvROK ((SV *)frame->data) && !CORO_THROW;
2475}
2476
2477static void
2478slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479{
2480 AV *av = (AV *)SvRV (arg [0]);
2481
2482 if (SvIVX (AvARRAY (av)[0]))
2483 {
2484 SvIVX (AvARRAY (av)[0]) = 0;
2485 frame->prepare = prepare_nop;
2486 frame->check = slf_check_nop;
2487 }
2488 else
2489 {
2490 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2491
2492 av_push (av, waiter);
2493
2494 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495 frame->prepare = prepare_schedule;
2496 frame->check = slf_check_signal_wait;
2497 }
2095} 2498}
2096 2499
2097/*****************************************************************************/ 2500/*****************************************************************************/
2501/* Coro::AIO */
2098 2502
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2503#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2504
2101/* create a closure from XS, returns a code reference */ 2505/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2506struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2507{
2107 CV *cv = (CV *)NEWSV (0, 0); 2508 int errorno;
2509 I32 laststype; /* U16 in 5.10.0 */
2510 int laststatval;
2511 Stat_t statcache;
2512};
2108 2513
2514static void
2515coro_aio_callback (pTHX_ CV *cv)
2516{
2517 dXSARGS;
2518 AV *state = (AV *)GENSUB_ARG;
2519 SV *coro = av_pop (state);
2520 SV *data_sv = newSV (sizeof (struct io_state));
2521
2522 av_extend (state, items - 1);
2523
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2524 sv_upgrade (data_sv, SVt_PV);
2525 SvCUR_set (data_sv, sizeof (struct io_state));
2526 SvPOK_only (data_sv);
2110 2527
2111 CvANON_on (cv); 2528 {
2112 CvISXSUB_on (cv); 2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2530
2116 return newRV_noinc ((SV *)cv); 2531 data->errorno = errno;
2532 data->laststype = PL_laststype;
2533 data->laststatval = PL_laststatval;
2534 data->statcache = PL_statcache;
2535 }
2536
2537 /* now build the result vector out of all the parameters and the data_sv */
2538 {
2539 int i;
2540
2541 for (i = 0; i < items; ++i)
2542 av_push (state, SvREFCNT_inc_NN (ST (i)));
2543 }
2544
2545 av_push (state, data_sv);
2546
2547 api_ready (aTHX_ coro);
2548 SvREFCNT_dec (coro);
2549 SvREFCNT_dec ((AV *)state);
2550}
2551
2552static int
2553slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2554{
2555 AV *state = (AV *)frame->data;
2556
2557 /* if we are about to throw, return early */
2558 /* this does not cancel the aio request, but at least */
2559 /* it quickly returns */
2560 if (CORO_THROW)
2561 return 0;
2562
2563 /* one element that is an RV? repeat! */
2564 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2565 return 1;
2566
2567 /* restore status */
2568 {
2569 SV *data_sv = av_pop (state);
2570 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2571
2572 errno = data->errorno;
2573 PL_laststype = data->laststype;
2574 PL_laststatval = data->laststatval;
2575 PL_statcache = data->statcache;
2576
2577 SvREFCNT_dec (data_sv);
2578 }
2579
2580 /* push result values */
2581 {
2582 dSP;
2583 int i;
2584
2585 EXTEND (SP, AvFILLp (state) + 1);
2586 for (i = 0; i <= AvFILLp (state); ++i)
2587 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2588
2589 PUTBACK;
2590 }
2591
2592 return 0;
2593}
2594
2595static void
2596slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2599 SV *coro_hv = SvRV (coro_current);
2600 struct coro *coro = SvSTATE_hv (coro_hv);
2601
2602 /* put our coroutine id on the state arg */
2603 av_push (state, SvREFCNT_inc_NN (coro_hv));
2604
2605 /* first see whether we have a non-zero priority and set it as AIO prio */
2606 if (coro->prio)
2607 {
2608 dSP;
2609
2610 static SV *prio_cv;
2611 static SV *prio_sv;
2612
2613 if (expect_false (!prio_cv))
2614 {
2615 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2616 prio_sv = newSViv (0);
2617 }
2618
2619 PUSHMARK (SP);
2620 sv_setiv (prio_sv, coro->prio);
2621 XPUSHs (prio_sv);
2622
2623 PUTBACK;
2624 call_sv (prio_cv, G_VOID | G_DISCARD);
2625 }
2626
2627 /* now call the original request */
2628 {
2629 dSP;
2630 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2631 int i;
2632
2633 PUSHMARK (SP);
2634
2635 /* first push all args to the stack */
2636 EXTEND (SP, items + 1);
2637
2638 for (i = 0; i < items; ++i)
2639 PUSHs (arg [i]);
2640
2641 /* now push the callback closure */
2642 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2643
2644 /* now call the AIO function - we assume our request is uncancelable */
2645 PUTBACK;
2646 call_sv ((SV *)req, G_VOID | G_DISCARD);
2647 }
2648
2649 /* now that the requets is going, we loop toll we have a result */
2650 frame->data = (void *)state;
2651 frame->prepare = prepare_schedule;
2652 frame->check = slf_check_aio_req;
2653}
2654
2655static void
2656coro_aio_req_xs (pTHX_ CV *cv)
2657{
2658 dXSARGS;
2659
2660 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2661
2662 XSRETURN_EMPTY;
2117} 2663}
2118 2664
2119/*****************************************************************************/ 2665/*****************************************************************************/
2120 2666
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2667MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2737 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2738}
2193 2739
2194SV * 2740SV *
2195new (char *klass, ...) 2741new (char *klass, ...)
2742 ALIAS:
2743 Coro::new = 1
2196 CODE: 2744 CODE:
2197{ 2745{
2198 struct coro *coro; 2746 struct coro *coro;
2199 MAGIC *mg; 2747 MAGIC *mg;
2200 HV *hv; 2748 HV *hv;
2749 CV *cb;
2201 int i; 2750 int i;
2751
2752 if (items > 1)
2753 {
2754 cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756 if (!ix)
2757 {
2758 if (CvISXSUB (cb))
2759 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761 if (!CvROOT (cb))
2762 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763 }
2764 }
2202 2765
2203 Newz (0, coro, 1, struct coro); 2766 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2767 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2768 coro->flags = CF_NEW;
2206 2769
… …
2211 coro->hv = hv = newHV (); 2774 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2775 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP; 2776 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2777 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2778
2779 if (items > 1)
2780 {
2216 av_extend (coro->args, items - 1); 2781 av_extend (coro->args, items - 1 + ix - 1);
2782
2783 if (ix)
2784 {
2785 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786 cb = cv_coro_run;
2787 }
2788
2789 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
2217 for (i = 1; i < items; i++) 2791 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2792 av_push (coro->args, newSVsv (ST (i)));
2793 }
2219} 2794}
2220 OUTPUT: 2795 OUTPUT:
2221 RETVAL 2796 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2797
2228void 2798void
2229transfer (...) 2799transfer (...)
2230 PROTOTYPE: $$ 2800 PROTOTYPE: $$
2231 CODE: 2801 CODE:
… …
2355 2925
2356void 2926void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 2927throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 2928 PROTOTYPE: $;$
2359 CODE: 2929 CODE:
2930{
2931 struct coro *current = SvSTATE_current;
2932 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 2933 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2934 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935}
2362 2936
2363void 2937void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2938api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 2939 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 2940 C_ARGS: aTHX_ coro, flags
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2989 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 2990
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 2991 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 2992 }
2419 2993
2994
2420MODULE = Coro::State PACKAGE = Coro 2995MODULE = Coro::State PACKAGE = Coro
2421 2996
2422BOOT: 2997BOOT:
2423{ 2998{
2424 int i; 2999 int i;
2425 3000
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3002 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3003 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3004 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3005 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3006 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3007
3008 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2432 3012
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3013 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3014
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3015 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3016 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3024
2445 { 3025 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3026 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3027
2448 coroapi.schedule = api_schedule; 3028 coroapi.schedule = api_schedule;
3029 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3030 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3031 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3032 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3033 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3034 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3035 coroapi.current = coro_current;
2455 3036
2456 GCoroAPI = &coroapi; 3037 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3038 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3039 SvREADONLY_on (sv);
2459 } 3040 }
2460} 3041}
2461 3042
2462void 3043void
2463schedule (...) 3044schedule (...)
2464 CODE: 3045 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3046 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047
3048void
3049schedule_to (...)
3050 CODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3052
3053void
3054cede_to (...)
3055 CODE:
3056 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2466 3057
2467void 3058void
2468cede (...) 3059cede (...)
2469 CODE: 3060 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3061 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2525 CODE: 3116 CODE:
2526 RETVAL = coro_nready; 3117 RETVAL = coro_nready;
2527 OUTPUT: 3118 OUTPUT:
2528 RETVAL 3119 RETVAL
2529 3120
2530# for async_pool speedup
2531void 3121void
2532_pool_1 (SV *cb) 3122_pool_handler (...)
2533 CODE: 3123 CODE:
2534{ 3124 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541
2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 {
2563 av_fill (defav, len - 1);
2564 for (i = 0; i < len; ++i)
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2566 }
2567}
2568 3125
2569void 3126void
2570_pool_2 (SV *cb) 3127async_pool (SV *cv, ...)
2571 CODE:
2572{
2573 struct coro *coro = SvSTATE_current;
2574
2575 sv_setsv (cb, &PL_sv_undef);
2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $ 3128 PROTOTYPE: &@
2607 PPCODE: 3129 PPCODE:
2608{ 3130{
2609 AV *defav = GvAV (PL_defgv); 3131 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3132 AV *av = newAV ();
3133 SV *cb = ST (0);
2611 int i; 3134 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3135
2617 data->errorno = errno; 3136 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3137 for (i = 1; i < items; ++i)
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3138 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3139
2627 av_push (av, data_sv); 3140 if ((SV *)hv == &PL_sv_undef)
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 { 3141 {
2674 PUSHMARK (SP); 3142 PUSHMARK (SP);
3143 EXTEND (SP, 2);
3144 PUSHs (sv_Coro);
3145 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3146 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3147 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3148 SPAGAIN;
3149
3150 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3151 }
2679 3152
2680 --incede; 3153 {
3154 struct coro *coro = SvSTATE_hv (hv);
3155
3156 assert (!coro->invoke_cb);
3157 assert (!coro->invoke_av);
3158 coro->invoke_cb = SvREFCNT_inc (cb);
3159 coro->invoke_av = av;
3160 }
3161
3162 api_ready (aTHX_ (SV *)hv);
3163
3164 if (GIMME_V != G_VOID)
3165 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3166 else
3167 SvREFCNT_dec (hv);
2681} 3168}
3169
3170SV *
3171rouse_cb ()
3172 PROTOTYPE:
3173 CODE:
3174 RETVAL = coro_new_rouse_cb (aTHX);
3175 OUTPUT:
3176 RETVAL
3177
3178void
3179rouse_wait (...)
3180 PROTOTYPE: ;$
3181 PPCODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2682 3183
2683 3184
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3185MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3186
2686BOOT: 3187BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3188 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3189
3190
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3191MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3192
2691SV * 3193SV *
2692new (SV *klass, SV *count_ = 0) 3194new (SV *klass, SV *count = 0)
2693 CODE: 3195 CODE:
2694{ 3196 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3197 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3198 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3199 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3200 OUTPUT:
2699} 3201 RETVAL
3202
3203# helper for Coro::Channel
3204SV *
3205_alloc (int count)
3206 CODE:
3207 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3208 OUTPUT:
2701 RETVAL 3209 RETVAL
2702 3210
2703SV * 3211SV *
2704count (SV *self) 3212count (SV *self)
… …
2713 adjust = 1 3221 adjust = 1
2714 CODE: 3222 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3223 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3224
2717void 3225void
2718down (SV *self) 3226down (...)
2719 CODE: 3227 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3228 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3234
2722void 3235void
2723try (SV *self) 3236try (SV *self)
2724 PPCODE: 3237 PPCODE:
2725{ 3238{
… …
2737 XSRETURN_NO; 3250 XSRETURN_NO;
2738} 3251}
2739 3252
2740void 3253void
2741waiters (SV *self) 3254waiters (SV *self)
2742 CODE: 3255 PPCODE:
2743{ 3256{
2744 AV *av = (AV *)SvRV (self); 3257 AV *av = (AV *)SvRV (self);
3258 int wcount = AvFILLp (av) + 1 - 1;
2745 3259
2746 if (GIMME_V == G_SCALAR) 3260 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3261 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3262 else
2749 { 3263 {
2750 int i; 3264 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3265 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3266 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3267 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3268 }
2755} 3269}
2756 3270
3271MODULE = Coro::State PACKAGE = Coro::Signal
3272
3273SV *
3274new (SV *klass)
3275 CODE:
3276 RETVAL = sv_bless (
3277 coro_waitarray_new (aTHX_ 0),
3278 GvSTASH (CvGV (cv))
3279 );
3280 OUTPUT:
3281 RETVAL
3282
3283void
3284wait (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3287
3288void
3289broadcast (SV *self)
3290 CODE:
3291{
3292 AV *av = (AV *)SvRV (self);
3293 coro_signal_wake (aTHX_ av, AvFILLp (av));
3294}
3295
3296void
3297send (SV *self)
3298 CODE:
3299{
3300 AV *av = (AV *)SvRV (self);
3301
3302 if (AvFILLp (av))
3303 coro_signal_wake (aTHX_ av, 1);
3304 else
3305 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3306}
3307
3308IV
3309awaited (SV *self)
3310 CODE:
3311 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3312 OUTPUT:
3313 RETVAL
3314
3315
3316MODULE = Coro::State PACKAGE = Coro::AnyEvent
3317
3318BOOT:
3319 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3320
3321void
3322_schedule (...)
3323 CODE:
3324{
3325 static int incede;
3326
3327 api_cede_notself (aTHX);
3328
3329 ++incede;
3330 while (coro_nready >= incede && api_cede (aTHX))
3331 ;
3332
3333 sv_setsv (sv_activity, &PL_sv_undef);
3334 if (coro_nready >= incede)
3335 {
3336 PUSHMARK (SP);
3337 PUTBACK;
3338 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3339 }
3340
3341 --incede;
3342}
3343
3344
3345MODULE = Coro::State PACKAGE = Coro::AIO
3346
3347void
3348_register (char *target, char *proto, SV *req)
3349 CODE:
3350{
3351 CV *req_cv = coro_sv_2cv (aTHX_ req);
3352 /* newXSproto doesn't return the CV on 5.8 */
3353 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354 sv_setpv ((SV *)slf_cv, proto);
3355 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356}
3357

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