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Comparing Coro/Coro/State.xs (file contents):
Revision 1.275 by root, Sat Nov 15 06:26:52 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
… …
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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 156# if CORO_PTHREAD
152static void *coro_thx; 157static void *coro_thx;
153# endif 158# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 159#endif
161 160
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176
177static 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);
178 166
179static U32 cctx_gen; 167static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 171static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
187 177
188static GV *irsgv; /* $/ */ 178static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 179static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 180static SV *rv_diehook;
191static SV *rv_warnhook; 181static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 182static HV *hv_sig; /* %SIG */
193 183
194/* async_pool helper stuff */ 184/* async_pool helper stuff */
195static SV *sv_pool_rss; 185static SV *sv_pool_rss;
196static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
197static 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;
198 192
199/* Coro::AnyEvent */ 193/* Coro::AnyEvent */
200static SV *sv_activity; 194static SV *sv_activity;
201 195
202static struct coro_cctx *cctx_first; 196static struct coro_cctx *cctx_first;
… …
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 */
263 struct CoroSLF slf_frame; /* saved slf frame */ 257 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 258 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 259 perl_slots *slot; /* basically the saved sp */
266 260
261 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 262 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 263 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 264 int flags; /* CF_ flags */
270 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);
271 267
272 /* statistics */ 268 /* statistics */
273 int usecount; /* number of transfers to this coro */ 269 int usecount; /* number of transfers to this coro */
274 270
275 /* coro process data */ 271 /* coro process data */
276 int prio; 272 int prio;
277 SV *throw; /* exception to be thrown */ 273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
278 275
279 /* async_pool */ 276 /* async_pool */
280 SV *saved_deffh; 277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
281 280
282 /* linked list */ 281 /* linked list */
283 struct coro *next, *prev; 282 struct coro *next, *prev;
284}; 283};
285 284
286typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
288 287
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 */
289static struct CoroSLF slf_frame; /* the current slf frame */ 291static struct CoroSLF slf_frame; /* the current slf frame */
290 292
291/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
292 294
293#define PRIO_MAX 3 295#define PRIO_MAX 3
… …
299 301
300/* for Coro.pm */ 302/* for Coro.pm */
301static SV *coro_current; 303static SV *coro_current;
302static SV *coro_readyhook; 304static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
306static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 307static struct coro *coro_first;
305#define coro_nready coroapi.nready 308#define coro_nready coroapi.nready
306 309
307/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
308 311
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 337 get_hv (name, create);
335#endif 338#endif
336 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);
337} 349}
338 350
339static AV * 351static AV *
340coro_clone_padlist (pTHX_ CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
341{ 353{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 408
397 return 0; 409 return 0;
398} 410}
399 411
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 412#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 414
403static MGVTBL coro_cv_vtbl = { 415static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 416 0, 0, 0, 0,
405 coro_cv_free 417 coro_cv_free
406}; 418};
407 419
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
408#define CORO_MAGIC(sv, type) \ 425#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 426 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 427 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 428 : 0)
414 429
415#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)
416#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)
417 432
418INLINE struct coro * 433INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 434SvSTATE_ (pTHX_ SV *coro)
420{ 435{
421 HV *stash; 436 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 453 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 454 return (struct coro *)mg->mg_ptr;
440} 455}
441 456
442#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))
443 462
444/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
445static void 464static void
446get_padlist (pTHX_ CV *cv) 465get_padlist (pTHX_ CV *cv)
447{ 466{
… …
453 else 472 else
454 { 473 {
455#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 475 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 476 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
462#else 481#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
515 } 534 }
516 535
517 PUTBACK; 536 PUTBACK;
518 } 537 }
519 538
520 slf_frame = c->slf_frame; 539 slf_frame = c->slf_frame;
540 CORO_THROW = c->except;
521} 541}
522 542
523static void 543static void
524save_perl (pTHX_ Coro__State c) 544save_perl (pTHX_ Coro__State c)
525{ 545{
546 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 547 c->slf_frame = slf_frame;
527 548
528 { 549 {
529 dSP; 550 dSP;
530 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
… …
605 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
608 */ 629 */
609#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
611#else 632#else
612static void 633static void
613coro_init_stacks (pTHX) 634coro_init_stacks (pTHX)
614{ 635{
615 PL_curstackinfo = new_stackinfo(32, 8); 636 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 700 Safefree (PL_retstack);
680#endif 701#endif
681} 702}
682 703
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
683static size_t 713static size_t
684coro_rss (pTHX_ struct coro *coro) 714coro_rss (pTHX_ struct coro *coro)
685{ 715{
686 size_t rss = sizeof (*coro); 716 size_t rss = sizeof (*coro);
687 717
688 if (coro->mainstack) 718 if (coro->mainstack)
689 { 719 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 720 if (coro->flags & CF_RUNNING)
694 { 721 {
695 slot = &tmp_slot; 722 #define SYM(sym) PL_ ## sym
696 723 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 724 #undef SYM
700 } 725 }
701 else 726 else
702 slot = coro->slot;
703
704 if (slot)
705 { 727 {
706 rss += sizeof (slot->curstackinfo); 728 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 729 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 730 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 731 }
718 } 732 }
719 733
720 return rss; 734 return rss;
721} 735}
… …
811 825
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 826 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 827}
814 828
815static void 829static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 830prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 831{
818 /* kind of mega-hacky, but works */ 832 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 833 ta->next = ta->prev = (struct coro *)ta;
820} 834}
821 835
822static int 836static int
823slf_check_nop (aTHX) 837slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 838{
825 return 0; 839 return 0;
826} 840}
827 841
828static void 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 */
829coro_setup (pTHX_ struct coro *coro) 851coro_setup (pTHX_ struct coro *coro)
830{ 852{
831 /* 853 /*
832 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
833 */ 855 */
… …
860 { 882 {
861 dSP; 883 dSP;
862 UNOP myop; 884 UNOP myop;
863 885
864 Zero (&myop, 1, UNOP); 886 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
867 890
868 PUSHMARK (SP); 891 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 892 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 893 PUTBACK;
871 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 896 }
875 897
876 /* 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
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 900 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 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;
881} 914}
882 915
883static void 916static void
884coro_destruct (pTHX_ struct coro *coro) 917coro_destruct (pTHX_ struct coro *coro)
885{ 918{
… …
909 942
910 SvREFCNT_dec (PL_diehook); 943 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 944 SvREFCNT_dec (PL_warnhook);
912 945
913 SvREFCNT_dec (coro->saved_deffh); 946 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
915 950
916 coro_destruct_stacks (aTHX); 951 coro_destruct_stacks (aTHX);
917} 952}
918 953
919INLINE void 954INLINE void
… …
929static int 964static int
930runops_trace (pTHX) 965runops_trace (pTHX)
931{ 966{
932 COP *oldcop = 0; 967 COP *oldcop = 0;
933 int oldcxix = -2; 968 int oldcxix = -2;
934 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 */
935 coro_cctx *cctx = coro->cctx; 970 coro_cctx *cctx = coro->cctx;
936 971
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 973 {
939 PERL_ASYNC_CHECK (); 974 PERL_ASYNC_CHECK ();
… …
991 { 1026 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1028
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1030 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1031 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1032 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1033 SV *fullname = sv_2mortal (newSV (0));
1000 1034
1001 if (isGV (gv)) 1035 if (isGV (gv))
… …
1006 SAVETMPS; 1040 SAVETMPS;
1007 EXTEND (SP, 3); 1041 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1042 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1043 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1044 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1046 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1049 SPAGAIN;
1016 FREETMPS; 1050 FREETMPS;
… …
1048 1082
1049 TAINT_NOT; 1083 TAINT_NOT;
1050 return 0; 1084 return 0;
1051} 1085}
1052 1086
1087static struct coro_cctx *cctx_ssl_cctx;
1088static struct CoroSLF cctx_ssl_frame;
1089
1053static void 1090static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1091slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1092{
1056 ta->prev = (struct coro *)cctx; 1093 ta->prev = (struct coro *)cctx_ssl_cctx;
1057 ta->next = 0; 1094 ta->next = 0;
1058} 1095}
1059 1096
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1097static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1098slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1099{
1063/* 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 */
1064static void NOINLINE 1106static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1107cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1108{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1109 PL_top_env = &PL_start_env;
1071 1110
1072 if (cctx->flags & CC_TRACE) 1111 if (cctx->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1112 PL_runops = runops_trace;
1074 1113
1075 Zero (&myop, 1, UNOP); 1114 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1115 * that can lead to creation of a new cctx */
1077 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));
1078 1118
1079 PUSHMARK (SP); 1119 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1120 cctx_ssl_cctx = cctx;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1121 cctx_ssl_frame = slf_frame;
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1122
1083 PUTBACK; 1123 slf_frame.prepare = slf_prepare_set_stacklevel;
1084 PL_op = (OP *)&myop; 1124 slf_frame.check = slf_check_set_stacklevel;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1125}
1088 1126
1089/* 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 */
1090INLINE void 1128INLINE void
1091transfer_tail (pTHX) 1129transfer_tail (pTHX)
1092{ 1130{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1131 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1132}
1109 1133
1110/* 1134/*
1111 * this is a _very_ stripped down perl interpreter ;) 1135 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1136 */
… …
1127 1151
1128 /* inject a fake subroutine call to cctx_init */ 1152 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1153 cctx_prepare (aTHX_ (coro_cctx *)arg);
1130 1154
1131 /* cctx_run is the alternative tail of transfer() */ 1155 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1156 transfer_tail (aTHX);
1134 1157
1135 /* 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 */
1136 PL_restartop = PL_op; 1159 PL_restartop = PL_op;
1137 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 */
1138 1165
1139 /* 1166 /*
1140 * 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
1141 * 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)
1142 * 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
… …
1293/** coroutine switching *****************************************************/ 1320/** coroutine switching *****************************************************/
1294 1321
1295static void 1322static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1323transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1324{
1325 /* TODO: throwing up here is considered harmful */
1326
1298 if (expect_true (prev != next)) 1327 if (expect_true (prev != next))
1299 { 1328 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1329 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1331
… …
1312#endif 1341#endif
1313 } 1342 }
1314} 1343}
1315 1344
1316/* always use the TRANSFER macro */ 1345/* always use the TRANSFER macro */
1317static void NOINLINE 1346static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1347transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1348{
1320 dSTACKLEVEL; 1349 dSTACKLEVEL;
1321 1350
1322 /* sometimes transfer is only called to set idle_sp */ 1351 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1352 if (expect_false (!next))
1324 { 1353 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1354 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1355 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1356 }
1328 else if (expect_true (prev != next)) 1357 else if (expect_true (prev != next))
1329 { 1358 {
1330 coro_cctx *prev__cctx; 1359 coro_cctx *prev__cctx;
… …
1337 prev->flags |= CF_RUNNING; 1366 prev->flags |= CF_RUNNING;
1338 } 1367 }
1339 1368
1340 prev->flags &= ~CF_RUNNING; 1369 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1370 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1371
1345 /* first get rid of the old state */ 1372 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1373 save_perl (aTHX_ prev);
1347 1374
1348 if (expect_false (next->flags & CF_NEW)) 1375 if (expect_false (next->flags & CF_NEW))
… …
1357 1384
1358 prev__cctx = prev->cctx; 1385 prev__cctx = prev->cctx;
1359 1386
1360 /* possibly untie and reuse the cctx */ 1387 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1388 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1389 prev__cctx->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1390 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx 1391 && !force_cctx
1365 )) 1392 ))
1366 { 1393 {
1367 /* 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 */
… …
1381 ++next->usecount; 1408 ++next->usecount;
1382 1409
1383 if (expect_true (!next->cctx)) 1410 if (expect_true (!next->cctx))
1384 next->cctx = cctx_get (aTHX); 1411 next->cctx = cctx_get (aTHX);
1385 1412
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1388
1389 if (expect_false (prev__cctx != next->cctx)) 1413 if (expect_false (prev__cctx != next->cctx))
1390 { 1414 {
1391 prev__cctx->top_env = PL_top_env; 1415 prev__cctx->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1416 PL_top_env = next->cctx->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1417 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1406coro_state_destroy (pTHX_ struct coro *coro) 1430coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1431{
1408 if (coro->flags & CF_DESTROYED) 1432 if (coro->flags & CF_DESTROYED)
1409 return 0; 1433 return 0;
1410 1434
1435 if (coro->on_destroy)
1436 coro->on_destroy (aTHX_ coro);
1437
1411 coro->flags |= CF_DESTROYED; 1438 coro->flags |= CF_DESTROYED;
1412 1439
1413 if (coro->flags & CF_READY) 1440 if (coro->flags & CF_READY)
1414 { 1441 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1442 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1443 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1444 --coro_nready;
1419 UNLOCK;
1420 } 1445 }
1421 else 1446 else
1422 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 */
1423 1448
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1449 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1461
1437 coro->slot = 0; 1462 coro->slot = 0;
1438 } 1463 }
1439 1464
1440 cctx_destroy (coro->cctx); 1465 cctx_destroy (coro->cctx);
1466 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1467 SvREFCNT_dec (coro->args);
1468 SvREFCNT_dec (CORO_THROW);
1442 1469
1443 if (coro->next) coro->next->prev = coro->prev; 1470 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1471 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1472 if (coro == coro_first) coro_first = coro->next;
1446 1473
… …
1500 1527
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1528 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1529 TRANSFER (ta, 1);
1503} 1530}
1504 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
1505/** Coro ********************************************************************/ 1555/** Coro ********************************************************************/
1506 1556
1507static void 1557INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1558coro_enq (pTHX_ struct coro *coro)
1509{ 1559{
1510 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));
1511} 1561}
1512 1562
1513static SV * 1563INLINE SV *
1514coro_deq (pTHX) 1564coro_deq (pTHX)
1515{ 1565{
1516 int prio; 1566 int prio;
1517 1567
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1568 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1587 if (coro->flags & CF_READY)
1538 return 0; 1588 return 0;
1539 1589
1540 coro->flags |= CF_READY; 1590 coro->flags |= CF_READY;
1541 1591
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1592 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1593 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1594
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1595 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1596 ++coro_nready;
1549 1597
1550 UNLOCK;
1551
1552 if (sv_hook) 1598 if (sv_hook)
1553 { 1599 {
1554 dSP; 1600 dSP;
1555 1601
1556 ENTER; 1602 ENTER;
1557 SAVETMPS; 1603 SAVETMPS;
1558 1604
1559 PUSHMARK (SP); 1605 PUSHMARK (SP);
1560 PUTBACK; 1606 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1607 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1608
1564 FREETMPS; 1609 FREETMPS;
1565 LEAVE; 1610 LEAVE;
1566 } 1611 }
1567 1612
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1620api_is_ready (pTHX_ SV *coro_sv)
1576{ 1621{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1622 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1623}
1579 1624
1625/* expects to own a reference to next->hv */
1580INLINE 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
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1643prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1582{ 1644{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;) 1645 for (;;)
1586 { 1646 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1647 SV *next_sv = coro_deq (aTHX);
1589 1648
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1649 if (expect_true (next_sv))
1592 { 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 */
1593 dSP; 1668 dSP;
1594 UNLOCK;
1595 1669
1596 ENTER; 1670 ENTER;
1597 SAVETMPS; 1671 SAVETMPS;
1598 1672
1599 PUSHMARK (SP); 1673 PUSHMARK (SP);
1600 PUTBACK; 1674 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1602 SPAGAIN;
1603 1676
1604 FREETMPS; 1677 FREETMPS;
1605 LEAVE; 1678 LEAVE;
1606 continue;
1607 } 1679 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 } 1680 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv);
1628 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv);
1632
1633 LOCK;
1634 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1681}
1638 1682
1639INLINE void 1683INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1685{
… …
1662{ 1706{
1663 struct coro_transfer_args ta; 1707 struct coro_transfer_args ta;
1664 1708
1665 prepare_schedule (aTHX_ &ta); 1709 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1710 TRANSFER (ta, 1);
1711}
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);
1667} 1721}
1668 1722
1669static int 1723static int
1670api_cede (pTHX) 1724api_cede (pTHX)
1671{ 1725{
… …
1720 else 1774 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1775 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1776 }
1723} 1777}
1724 1778
1725#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
1726static int 1835static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1837{
1729 AV *padlist; 1838 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1839 struct coro *coro = (struct coro *)frame->data;
1731 1840
1732 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 }
1733 1964
1734 return 0; 1965 return 0;
1735} 1966}
1736 1967
1737static MGVTBL coro_gensub_vtbl = { 1968static void
1738 0, 0, 0, 0, 1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1970{
1740}; 1971 SV *cb;
1741#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}
1742 2259
1743/*****************************************************************************/ 2260/*****************************************************************************/
1744/* PerlIO::cede */ 2261/* PerlIO::cede */
1745 2262
1746typedef struct 2263typedef struct
… …
1814 PerlIOBuf_get_cnt, 2331 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2332 PerlIOBuf_set_ptrcnt,
1816}; 2333};
1817 2334
1818/*****************************************************************************/ 2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
1819 2337
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2338static SV *
1831pp_restore (pTHX) 2339coro_waitarray_new (pTHX_ int count)
1832{ 2340{
1833 dSP; 2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
1834 2344
1835 PUSHMARK (SP); 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);
1836 2353
1837 EXTEND (SP, 3); 2354 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2355}
1845 2356
1846static void 2357/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2358
1852static void 2359static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2361{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2362 SV *count_sv = AvARRAY (av)[0];
2363 IV count = SvIVX (count_sv);
1856 2364
1857 frame->prepare = slf_prepare_set_stacklevel; 2365 count += adjust;
1858 frame->check = slf_check_nop; 2366 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2367
1862static void 2368 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2369 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2370 {
1921 /* first iteration */ 2371 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2372
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2373 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2374 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2375 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2376 cb = av_shift (av);
1931 2377
1932 /* pop args */ 2378 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2379 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2380 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2381 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2382 }
1942 2383 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2384 {
1973 if (sp == bot) 2385 dSP;
1974 XPUSHs (&PL_sv_undef); 2386 PUSHMARK (SP);
1975 2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2388 PUTBACK;
2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2390 }
1978 2391
1979 PUTBACK; 2392 SvREFCNT_dec (cb);
1980 } 2393 }
1981
1982 return NORMAL;
1983} 2394}
1984 2395
1985static void 2396static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2398{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2401}
2017
2018/*****************************************************************************/
2019 2402
2020static int 2403static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2405{
2023 AV *av = (AV *)frame->data; 2406 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2407 SV *count_sv = AvARRAY (av)[0];
2025 2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2026 if (SvIVX (count_sv) > 0) 2412 else if (SvIVX (count_sv) > 0)
2027 { 2413 {
2414 SvSTATE_current->on_destroy = 0;
2415
2416 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2029 return 0; 2421 return 0;
2030 } 2422 }
2031 else 2423 else
2032 { 2424 {
2033 int i; 2425 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2435 return 1;
2044 } 2436 }
2045} 2437}
2046 2438
2047static void 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
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2453{
2050 AV *av = (AV *)SvRV (arg [0]); 2454 AV *av = (AV *)SvRV (arg [0]);
2051 2455
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2457 {
… …
2058 { 2462 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2463 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2464
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2466 frame->prepare = prepare_schedule;
2063 }
2064 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);
2065 frame->check = slf_check_semaphore_down; 2478 frame->check = slf_check_semaphore_down;
2066
2067} 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 {
2644 dSP;
2645 int i;
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
2695 PUSHMARK (SP);
2696
2697 /* first push all args to the stack */
2698 EXTEND (SP, items + 1);
2699
2700 for (i = 0; i < items; ++i)
2701 PUSHs (arg [i]);
2702
2703 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2705
2706 /* now call the AIO function - we assume our request is uncancelable */
2707 PUTBACK;
2708 call_sv ((SV *)req, G_VOID | G_DISCARD);
2709 }
2710
2711 /* now that the requets is going, we loop toll we have a result */
2712 frame->data = (void *)state;
2713 frame->prepare = prepare_schedule;
2714 frame->check = slf_check_aio_req;
2715}
2716
2717static void
2718coro_aio_req_xs (pTHX_ CV *cv)
2719{
2720 dXSARGS;
2721
2722 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2723
2724 XSRETURN_EMPTY;
2725}
2726
2727/*****************************************************************************/
2068 2728
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2730
2071PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
2072 2732
2073BOOT: 2733BOOT:
2074{ 2734{
2075#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2736# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2737 coro_thx = PERL_GET_CONTEXT;
2079# endif 2738# endif
2080#endif 2739#endif
2081 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2760 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2761 main_top_env = PL_top_env;
2103 2762
2104 while (main_top_env->je_prev) 2763 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2764 main_top_env = main_top_env->je_prev;
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 }
2106 2775
2107 coroapi.ver = CORO_API_VERSION; 2776 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2777 coroapi.rev = CORO_API_REVISION;
2109 2778
2110 coroapi.transfer = api_transfer; 2779 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2798}
2130 2799
2131SV * 2800SV *
2132new (char *klass, ...) 2801new (char *klass, ...)
2802 ALIAS:
2803 Coro::new = 1
2133 CODE: 2804 CODE:
2134{ 2805{
2135 struct coro *coro; 2806 struct coro *coro;
2136 MAGIC *mg; 2807 MAGIC *mg;
2137 HV *hv; 2808 HV *hv;
2809 CV *cb;
2138 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 }
2139 2825
2140 Newz (0, coro, 1, struct coro); 2826 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2827 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2828 coro->flags = CF_NEW;
2143 2829
… …
2148 coro->hv = hv = newHV (); 2834 coro->hv = hv = newHV ();
2149 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);
2150 mg->mg_flags |= MGf_DUP; 2836 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2837 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2838
2839 if (items > 1)
2840 {
2153 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
2154 for (i = 1; i < items; i++) 2851 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2852 av_push (coro->args, newSVsv (ST (i)));
2853 }
2156} 2854}
2157 OUTPUT: 2855 OUTPUT:
2158 RETVAL 2856 RETVAL
2159 2857
2160void 2858void
2161_set_stacklevel (...) 2859transfer (...)
2860 PROTOTYPE: $$
2162 CODE: 2861 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 2862 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2164
2165void
2166transfer (...)
2167 CODE:
2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2169 2863
2170bool 2864bool
2171_destroy (SV *coro_sv) 2865_destroy (SV *coro_sv)
2172 CODE: 2866 CODE:
2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2867 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2291 2985
2292void 2986void
2293throw (Coro::State self, SV *throw = &PL_sv_undef) 2987throw (Coro::State self, SV *throw = &PL_sv_undef)
2294 PROTOTYPE: $;$ 2988 PROTOTYPE: $;$
2295 CODE: 2989 CODE:
2990{
2991 struct coro *current = SvSTATE_current;
2992 SV **throwp = self == current ? &CORO_THROW : &self->except;
2296 SvREFCNT_dec (self->throw); 2993 SvREFCNT_dec (*throwp);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2994 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2995}
2298 2996
2299void 2997void
2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2998api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$ 2999 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags 3000 C_ARGS: aTHX_ coro, flags
… …
2333 3031
2334void 3032void
2335force_cctx () 3033force_cctx ()
2336 PROTOTYPE: 3034 PROTOTYPE:
2337 CODE: 3035 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0; 3036 SvSTATE_current->cctx->idle_sp = 0;
2340 3037
2341void 3038void
2342swap_defsv (Coro::State self) 3039swap_defsv (Coro::State self)
2343 PROTOTYPE: $ 3040 PROTOTYPE: $
2344 ALIAS: 3041 ALIAS:
… …
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3049 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353 3050
2354 SV *tmp = *src; *src = *dst; *dst = tmp; 3051 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 } 3052 }
2356 3053
3054
2357MODULE = Coro::State PACKAGE = Coro 3055MODULE = Coro::State PACKAGE = Coro
2358 3056
2359BOOT: 3057BOOT:
2360{ 3058{
2361 int i; 3059 int i;
2362 3060
2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3061 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3062 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2366 3063 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3064 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3065 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2368 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);
2369 3074
2370 coro_stash = gv_stashpv ("Coro", TRUE); 3075 coro_stash = gv_stashpv ("Coro", TRUE);
2371 3076
2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3077 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2373 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3078 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2381 3086
2382 { 3087 {
2383 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3088 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2384 3089
2385 coroapi.schedule = api_schedule; 3090 coroapi.schedule = api_schedule;
3091 coroapi.schedule_to = api_schedule_to;
2386 coroapi.cede = api_cede; 3092 coroapi.cede = api_cede;
2387 coroapi.cede_notself = api_cede_notself; 3093 coroapi.cede_notself = api_cede_notself;
2388 coroapi.ready = api_ready; 3094 coroapi.ready = api_ready;
2389 coroapi.is_ready = api_is_ready; 3095 coroapi.is_ready = api_is_ready;
2390 coroapi.nready = coro_nready; 3096 coroapi.nready = coro_nready;
2391 coroapi.current = coro_current; 3097 coroapi.current = coro_current;
2392 3098
2393 GCoroAPI = &coroapi; 3099 /*GCoroAPI = &coroapi;*/
2394 sv_setiv (sv, (IV)&coroapi); 3100 sv_setiv (sv, (IV)&coroapi);
2395 SvREADONLY_on (sv); 3101 SvREADONLY_on (sv);
2396 } 3102 }
2397} 3103}
2398 3104
2399void 3105void
3106terminate (...)
3107 CODE:
3108 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3109
3110void
2400schedule (...) 3111schedule (...)
2401 CODE: 3112 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 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);
2403 3124
2404void 3125void
2405cede (...) 3126cede (...)
2406 CODE: 3127 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3128 CORO_EXECUTE_SLF_XS (slf_init_cede);
2408 3129
2409void 3130void
2410cede_notself (...) 3131cede_notself (...)
2411 CODE: 3132 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 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);
2413 3140
2414void 3141void
2415_set_current (SV *current) 3142_set_current (SV *current)
2416 PROTOTYPE: $ 3143 PROTOTYPE: $
2417 CODE: 3144 CODE:
… …
2420 3147
2421void 3148void
2422_set_readyhook (SV *hook) 3149_set_readyhook (SV *hook)
2423 PROTOTYPE: $ 3150 PROTOTYPE: $
2424 CODE: 3151 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook); 3152 SvREFCNT_dec (coro_readyhook);
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3153 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2428 UNLOCK;
2429 3154
2430int 3155int
2431prio (Coro::State coro, int newprio = 0) 3156prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$ 3157 PROTOTYPE: $;$
2433 ALIAS: 3158 ALIAS:
… …
2464 CODE: 3189 CODE:
2465 RETVAL = coro_nready; 3190 RETVAL = coro_nready;
2466 OUTPUT: 3191 OUTPUT:
2467 RETVAL 3192 RETVAL
2468 3193
2469# for async_pool speedup
2470void 3194void
2471_pool_1 (SV *cb) 3195_pool_handler (...)
2472 CODE: 3196 CODE:
2473{ 3197 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2474 struct coro *coro = SvSTATE (coro_current);
2475 HV *hv = (HV *)SvRV (coro_current);
2476 AV *defav = GvAV (PL_defgv);
2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2478 AV *invoke_av;
2479 int i, len;
2480 3198
2481 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)
2482 { 3214 {
2483 SV *old = PL_diehook; 3215 PUSHMARK (SP);
2484 PL_diehook = 0; 3216 EXTEND (SP, 2);
2485 SvREFCNT_dec (old); 3217 PUSHs (sv_Coro);
2486 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));
2487 } 3224 }
2488 3225
2489 SvREFCNT_dec (coro->saved_deffh);
2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2491
2492 hv_store (hv, "desc", sizeof ("desc") - 1,
2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2494
2495 invoke_av = (AV *)SvRV (invoke);
2496 len = av_len (invoke_av);
2497
2498 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2499
2500 if (len > 0)
2501 { 3226 {
2502 av_fill (defav, len - 1); 3227 struct coro *coro = SvSTATE_hv (hv);
2503 for (i = 0; i < len; ++i) 3228
2504 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;
2505 } 3233 }
2506}
2507 3234
2508void 3235 api_ready (aTHX_ (SV *)hv);
2509_pool_2 (SV *cb) 3236
3237 if (GIMME_V != G_VOID)
3238 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3239 else
3240 SvREFCNT_dec (hv);
3241}
3242
3243SV *
3244rouse_cb ()
3245 PROTOTYPE:
2510 CODE: 3246 CODE:
2511{ 3247 RETVAL = coro_new_rouse_cb (aTHX);
2512 struct coro *coro = SvSTATE (coro_current);
2513
2514 sv_setsv (cb, &PL_sv_undef);
2515
2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2517 coro->saved_deffh = 0;
2518
2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2520 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2521 {
2522 SV *old = PL_diehook;
2523 PL_diehook = 0;
2524 SvREFCNT_dec (old);
2525 croak ("\3async_pool terminate\2\n");
2526 }
2527
2528 av_clear (GvAV (PL_defgv));
2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2531
2532 coro->prio = 0;
2533
2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2535 api_trace (aTHX_ coro_current, 0);
2536
2537 av_push (av_async_pool, newSVsv (coro_current));
2538}
2539
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT: 3248 OUTPUT:
2584 RETVAL 3249 RETVAL
2585 3250
2586#endif
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void 3251void
2592_get_state (SV *self) 3252rouse_wait (...)
2593 PROTOTYPE: $ 3253 PROTOTYPE: ;$
2594 PPCODE: 3254 PPCODE:
2595{ 3255 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603
2604 data->errorno = errno;
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646SV *
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669 3256
2670 3257
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3258MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3259
2673BOOT: 3260BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3261 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3262
3263
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3264MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3265
2678SV * 3266SV *
2679new (SV *klass, SV *count_ = 0) 3267new (SV *klass, SV *count = 0)
2680 CODE: 3268 CODE:
2681{ 3269 RETVAL = sv_bless (
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3270 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2683 AV *av = newAV (); 3271 GvSTASH (CvGV (cv))
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3272 );
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3273 OUTPUT:
2686} 3274 RETVAL
3275
3276# helper for Coro::Channel
3277SV *
3278_alloc (int count)
3279 CODE:
3280 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3281 OUTPUT:
2688 RETVAL 3282 RETVAL
2689 3283
2690SV * 3284SV *
2691count (SV *self) 3285count (SV *self)
… …
2697void 3291void
2698up (SV *self, int adjust = 1) 3292up (SV *self, int adjust = 1)
2699 ALIAS: 3293 ALIAS:
2700 adjust = 1 3294 adjust = 1
2701 CODE: 3295 CODE:
2702{ 3296 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728 3297
2729void 3298void
2730down (SV *self) 3299down (...)
2731 CODE: 3300 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items); 3301 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3302
3303void
3304wait (...)
3305 CODE:
3306 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2733 3307
2734void 3308void
2735try (SV *self) 3309try (SV *self)
2736 PPCODE: 3310 PPCODE:
2737{ 3311{
… …
2749 XSRETURN_NO; 3323 XSRETURN_NO;
2750} 3324}
2751 3325
2752void 3326void
2753waiters (SV *self) 3327waiters (SV *self)
2754 CODE: 3328 PPCODE:
2755{ 3329{
2756 AV *av = (AV *)SvRV (self); 3330 AV *av = (AV *)SvRV (self);
3331 int wcount = AvFILLp (av) + 1 - 1;
2757 3332
2758 if (GIMME_V == G_SCALAR) 3333 if (GIMME_V == G_SCALAR)
2759 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3334 XPUSHs (sv_2mortal (newSViv (wcount)));
2760 else 3335 else
2761 { 3336 {
2762 int i; 3337 int i;
2763 EXTEND (SP, AvFILLp (av) + 1 - 1); 3338 EXTEND (SP, wcount);
2764 for (i = 1; i <= AvFILLp (av); ++i) 3339 for (i = 1; i <= wcount; ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i])); 3340 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2766 } 3341 }
2767} 3342}
2768 3343
3344MODULE = Coro::State PACKAGE = Coro::Signal
3345
3346SV *
3347new (SV *klass)
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:
3364{
3365 AV *av = (AV *)SvRV (self);
3366 coro_signal_wake (aTHX_ av, AvFILLp (av));
3367}
3368
3369void
3370send (SV *self)
3371 CODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374
3375 if (AvFILLp (av))
3376 coro_signal_wake (aTHX_ av, 1);
3377 else
3378 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3379}
3380
3381IV
3382awaited (SV *self)
3383 CODE:
3384 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3385 OUTPUT:
3386 RETVAL
3387
3388
3389MODULE = Coro::State PACKAGE = Coro::AnyEvent
3390
3391BOOT:
3392 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3393
3394void
3395_schedule (...)
3396 CODE:
3397{
3398 static int incede;
3399
3400 api_cede_notself (aTHX);
3401
3402 ++incede;
3403 while (coro_nready >= incede && api_cede (aTHX))
3404 ;
3405
3406 sv_setsv (sv_activity, &PL_sv_undef);
3407 if (coro_nready >= incede)
3408 {
3409 PUSHMARK (SP);
3410 PUTBACK;
3411 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3412 }
3413
3414 --incede;
3415}
3416
3417
3418MODULE = Coro::State PACKAGE = Coro::AIO
3419
3420void
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}
3430

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