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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.318 by root, Thu Nov 20 07:02:43 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;
… …
252#undef VAR 246#undef VAR
253} perl_slots; 247} perl_slots;
254 248
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 249#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 250
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 251/* this is a structure representing a perl-level coroutine */
267struct coro { 252struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 253 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 254 coro_cctx *cctx;
270 255
271 /* process data */ 256 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 257 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 258 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 259 perl_slots *slot; /* basically the saved sp */
276 260
261 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 262 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 263 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 264 int flags; /* CF_ flags */
280 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);
281 267
282 /* statistics */ 268 /* statistics */
283 int usecount; /* number of transfers to this coro */ 269 int usecount; /* number of transfers to this coro */
284 270
285 /* coro process data */ 271 /* coro process data */
286 int prio; 272 int prio;
287 SV *throw; /* exception to be thrown */ 273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
288 275
289 /* async_pool */ 276 /* async_pool */
290 SV *saved_deffh; 277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
291 280
292 /* linked list */ 281 /* linked list */
293 struct coro *next, *prev; 282 struct coro *next, *prev;
294}; 283};
295 284
296typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
298 287
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 */
299static struct slf_frame slf_frame; /* the current slf frame */ 291static struct CoroSLF slf_frame; /* the current slf frame */
300 292
301/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
302 294
303#define PRIO_MAX 3 295#define PRIO_MAX 3
304#define PRIO_HIGH 1 296#define PRIO_HIGH 1
… …
309 301
310/* for Coro.pm */ 302/* for Coro.pm */
311static SV *coro_current; 303static SV *coro_current;
312static SV *coro_readyhook; 304static SV *coro_readyhook;
313static 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;
314static struct coro *coro_first; 307static struct coro *coro_first;
315#define coro_nready coroapi.nready 308#define coro_nready coroapi.nready
316 309
317/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
318 311
… …
342#if PERL_VERSION_ATLEAST (5,10,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
343 /* 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 */
344 get_hv (name, create); 337 get_hv (name, create);
345#endif 338#endif
346 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);
347} 349}
348 350
349static AV * 351static AV *
350coro_clone_padlist (pTHX_ CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
351{ 353{
… …
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 408
407 return 0; 409 return 0;
408} 410}
409 411
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext 412#define CORO_MAGIC_type_cv 26
411#define CORO_MAGIC_type_state PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 414
413static MGVTBL coro_cv_vtbl = { 415static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 416 0, 0, 0, 0,
415 coro_cv_free 417 coro_cv_free
416}; 418};
417 419
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
418#define CORO_MAGIC(sv, type) \ 425#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \ 426 (expect_true (SvMAGIC (sv)) \
420 ? SvMAGIC (sv)->mg_type == type \ 427 ? CORO_MAGIC_NN (sv, type) \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0 428 : 0)
424 429
425#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)
426#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)
427 432
428INLINE struct coro * 433INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro) 434SvSTATE_ (pTHX_ SV *coro)
430{ 435{
431 HV *stash; 436 HV *stash;
… …
448 mg = CORO_MAGIC_state (coro); 453 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr; 454 return (struct coro *)mg->mg_ptr;
450} 455}
451 456
452#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))
453 462
454/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
455static void 464static void
456get_padlist (pTHX_ CV *cv) 465get_padlist (pTHX_ CV *cv)
457{ 466{
… …
463 else 472 else
464 { 473 {
465#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 475 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 476 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
472#else 481#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
525 } 534 }
526 535
527 PUTBACK; 536 PUTBACK;
528 } 537 }
529 538
530 slf_frame = c->slf_frame; 539 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 540 CORO_THROW = c->except;
532} 541}
533 542
534static void 543static void
535save_perl (pTHX_ Coro__State c) 544save_perl (pTHX_ Coro__State c)
536{ 545{
537 c->slf_data = coroapi.slf_data; 546 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 547 c->slf_frame = slf_frame;
539 548
540 { 549 {
541 dSP; 550 dSP;
542 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
… …
617 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
620 */ 629 */
621#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
623#else 632#else
624static void 633static void
625coro_init_stacks (pTHX) 634coro_init_stacks (pTHX)
626{ 635{
627 PL_curstackinfo = new_stackinfo(32, 8); 636 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 700 Safefree (PL_retstack);
692#endif 701#endif
693} 702}
694 703
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
695static size_t 713static size_t
696coro_rss (pTHX_ struct coro *coro) 714coro_rss (pTHX_ struct coro *coro)
697{ 715{
698 size_t rss = sizeof (*coro); 716 size_t rss = sizeof (*coro);
699 717
700 if (coro->mainstack) 718 if (coro->mainstack)
701 { 719 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 720 if (coro->flags & CF_RUNNING)
706 { 721 {
707 slot = &tmp_slot; 722 #define SYM(sym) PL_ ## sym
708 723 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 724 #undef SYM
712 } 725 }
713 else 726 else
714 slot = coro->slot;
715
716 if (slot)
717 { 727 {
718 rss += sizeof (slot->curstackinfo); 728 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 729 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 730 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 731 }
730 } 732 }
731 733
732 return rss; 734 return rss;
733} 735}
… …
823 825
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 826 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 827}
826 828
827static void 829static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 830prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 831{
830 /* kind of mega-hacky, but works */ 832 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 833 ta->next = ta->prev = (struct coro *)ta;
832} 834}
833 835
834static int 836static int
835slf_check_nop (aTHX) 837slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 838{
837 return 0; 839 return 0;
838} 840}
839 841
840static 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 */
841coro_setup (pTHX_ struct coro *coro) 851coro_setup (pTHX_ struct coro *coro)
842{ 852{
843 /* 853 /*
844 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
845 */ 855 */
… …
872 { 882 {
873 dSP; 883 dSP;
874 UNOP myop; 884 UNOP myop;
875 885
876 Zero (&myop, 1, UNOP); 886 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
879 890
880 PUSHMARK (SP); 891 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 892 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 893 PUTBACK;
883 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 896 }
887 897
888 /* 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
889 * 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.
890 */ 900 */
891 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 */
892 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;
893} 914}
894 915
895static void 916static void
896coro_destruct (pTHX_ struct coro *coro) 917coro_destruct (pTHX_ struct coro *coro)
897{ 918{
… …
921 942
922 SvREFCNT_dec (PL_diehook); 943 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook); 944 SvREFCNT_dec (PL_warnhook);
924 945
925 SvREFCNT_dec (coro->saved_deffh); 946 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
927 950
928 coro_destruct_stacks (aTHX); 951 coro_destruct_stacks (aTHX);
929} 952}
930 953
931INLINE void 954INLINE void
… …
941static int 964static int
942runops_trace (pTHX) 965runops_trace (pTHX)
943{ 966{
944 COP *oldcop = 0; 967 COP *oldcop = 0;
945 int oldcxix = -2; 968 int oldcxix = -2;
946 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 */
947 coro_cctx *cctx = coro->cctx; 970 coro_cctx *cctx = coro->cctx;
948 971
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 973 {
951 PERL_ASYNC_CHECK (); 974 PERL_ASYNC_CHECK ();
… …
1018 SAVETMPS; 1041 SAVETMPS;
1019 EXTEND (SP, 3); 1042 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1043 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1044 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1045 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1046 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1047 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1048 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1049 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1050 SPAGAIN;
1028 FREETMPS; 1051 FREETMPS;
… …
1060 1083
1061 TAINT_NOT; 1084 TAINT_NOT;
1062 return 0; 1085 return 0;
1063} 1086}
1064 1087
1088static struct coro_cctx *cctx_ssl_cctx;
1089static struct CoroSLF cctx_ssl_frame;
1090
1065static void 1091static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1092slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1093{
1068 ta->prev = (struct coro *)cctx; 1094 ta->prev = (struct coro *)cctx_ssl_cctx;
1069 ta->next = 0; 1095 ta->next = 0;
1070} 1096}
1071 1097
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1098static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1099slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1100{
1075/* also initialises PL_top_env */ 1101 *frame = cctx_ssl_frame;
1102
1103 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1104}
1105
1106/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1107static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1108cctx_prepare (pTHX_ coro_cctx *cctx)
1078{ 1109{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1110 PL_top_env = &PL_start_env;
1083 1111
1084 if (cctx->flags & CC_TRACE) 1112 if (cctx->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1113 PL_runops = runops_trace;
1086 1114
1087 Zero (&myop, 1, UNOP); 1115 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1116 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1117 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1118 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1119
1091 PUSHMARK (SP); 1120 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1121 cctx_ssl_cctx = cctx;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1122 cctx_ssl_frame = slf_frame;
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1123
1095 PUTBACK; 1124 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 PL_op = (OP *)&myop; 1125 slf_frame.check = slf_check_set_stacklevel;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1126}
1100 1127
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1128/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1129INLINE void
1103transfer_tail (pTHX) 1130transfer_tail (pTHX)
1104{ 1131{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1132 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1133}
1121 1134
1122/* 1135/*
1123 * this is a _very_ stripped down perl interpreter ;) 1136 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1137 */
… …
1139 1152
1140 /* inject a fake subroutine call to cctx_init */ 1153 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1154 cctx_prepare (aTHX_ (coro_cctx *)arg);
1142 1155
1143 /* cctx_run is the alternative tail of transfer() */ 1156 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1157 transfer_tail (aTHX);
1146 1158
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1159 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1160 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1161 perl_run (PL_curinterp);
1162 /*
1163 * Unfortunately, there is no way to get at the return values of the
1164 * coro body here, as perl_run destroys these
1165 */
1150 1166
1151 /* 1167 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1168 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1169 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1170 * reason for perl_run to return. We try to exit by jumping to the
… …
1305/** coroutine switching *****************************************************/ 1321/** coroutine switching *****************************************************/
1306 1322
1307static void 1323static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1324transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1325{
1326 /* TODO: throwing up here is considered harmful */
1327
1310 if (expect_true (prev != next)) 1328 if (expect_true (prev != next))
1311 { 1329 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1330 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1331 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1332
1315 if (expect_false (next->flags & CF_RUNNING)) 1333 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1334 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1335
1318 if (expect_false (next->flags & CF_DESTROYED)) 1336 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1338
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1339#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1340 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1341 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1342#endif
1325 } 1343 }
1326} 1344}
1327 1345
1328/* always use the TRANSFER macro */ 1346/* always use the TRANSFER macro */
1329static void NOINLINE 1347static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1348transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1349{
1332 dSTACKLEVEL; 1350 dSTACKLEVEL;
1333 1351
1334 /* sometimes transfer is only called to set idle_sp */ 1352 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1353 if (expect_false (!next))
1336 { 1354 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1355 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1356 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1357 }
1340 else if (expect_true (prev != next)) 1358 else if (expect_true (prev != next))
1341 { 1359 {
1342 coro_cctx *prev__cctx; 1360 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1367 prev->flags |= CF_RUNNING;
1350 } 1368 }
1351 1369
1352 prev->flags &= ~CF_RUNNING; 1370 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1371 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1372
1357 /* first get rid of the old state */ 1373 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1374 save_perl (aTHX_ prev);
1359 1375
1360 if (expect_false (next->flags & CF_NEW)) 1376 if (expect_false (next->flags & CF_NEW))
… …
1369 1385
1370 prev__cctx = prev->cctx; 1386 prev__cctx = prev->cctx;
1371 1387
1372 /* possibly untie and reuse the cctx */ 1388 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1389 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1390 prev__cctx->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1391 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1392 && !force_cctx
1377 )) 1393 ))
1378 { 1394 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1409 ++next->usecount;
1394 1410
1395 if (expect_true (!next->cctx)) 1411 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1412 next->cctx = cctx_get (aTHX);
1397 1413
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
1401 if (expect_false (prev__cctx != next->cctx)) 1414 if (expect_false (prev__cctx != next->cctx))
1402 { 1415 {
1403 prev__cctx->top_env = PL_top_env; 1416 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1417 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1418 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1431coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1432{
1420 if (coro->flags & CF_DESTROYED) 1433 if (coro->flags & CF_DESTROYED)
1421 return 0; 1434 return 0;
1422 1435
1436 if (coro->on_destroy)
1437 coro->on_destroy (aTHX_ coro);
1438
1423 coro->flags |= CF_DESTROYED; 1439 coro->flags |= CF_DESTROYED;
1424 1440
1425 if (coro->flags & CF_READY) 1441 if (coro->flags & CF_READY)
1426 { 1442 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1443 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1444 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1445 --coro_nready;
1431 UNLOCK;
1432 } 1446 }
1433 else 1447 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1448 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1449
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1450 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1451 {
1438 struct coro temp; 1452 struct coro temp;
1439 1453
1440 if (coro->flags & CF_RUNNING) 1454 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1455
1443 save_perl (aTHX_ &temp); 1456 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1457 load_perl (aTHX_ coro);
1445 1458
1446 coro_destruct (aTHX_ coro); 1459 coro_destruct (aTHX_ coro);
… …
1449 1462
1450 coro->slot = 0; 1463 coro->slot = 0;
1451 } 1464 }
1452 1465
1453 cctx_destroy (coro->cctx); 1466 cctx_destroy (coro->cctx);
1467 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1468 SvREFCNT_dec (coro->args);
1469 SvREFCNT_dec (CORO_THROW);
1455 1470
1456 if (coro->next) coro->next->prev = coro->prev; 1471 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1472 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1473 if (coro == coro_first) coro_first = coro->next;
1459 1474
… …
1513 1528
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1529 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1530 TRANSFER (ta, 1);
1516} 1531}
1517 1532
1533/*****************************************************************************/
1534/* gensub: simple closure generation utility */
1535
1536#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1537
1538/* create a closure from XS, returns a code reference */
1539/* the arg can be accessed via GENSUB_ARG from the callback */
1540/* the callback must use dXSARGS/XSRETURN */
1541static SV *
1542gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1543{
1544 CV *cv = (CV *)newSV (0);
1545
1546 sv_upgrade ((SV *)cv, SVt_PVCV);
1547
1548 CvANON_on (cv);
1549 CvISXSUB_on (cv);
1550 CvXSUB (cv) = xsub;
1551 GENSUB_ARG = arg;
1552
1553 return newRV_noinc ((SV *)cv);
1554}
1555
1518/** Coro ********************************************************************/ 1556/** Coro ********************************************************************/
1519 1557
1520static void 1558INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1559coro_enq (pTHX_ struct coro *coro)
1522{ 1560{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1561 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1562}
1525 1563
1526static SV * 1564INLINE SV *
1527coro_deq (pTHX) 1565coro_deq (pTHX)
1528{ 1566{
1529 int prio; 1567 int prio;
1530 1568
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1569 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1550 if (coro->flags & CF_READY) 1588 if (coro->flags & CF_READY)
1551 return 0; 1589 return 0;
1552 1590
1553 coro->flags |= CF_READY; 1591 coro->flags |= CF_READY;
1554 1592
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1593 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1594 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1595
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1596 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1597 ++coro_nready;
1562 1598
1563 UNLOCK;
1564
1565 if (sv_hook) 1599 if (sv_hook)
1566 { 1600 {
1567 dSP; 1601 dSP;
1568 1602
1569 ENTER; 1603 ENTER;
1570 SAVETMPS; 1604 SAVETMPS;
1571 1605
1572 PUSHMARK (SP); 1606 PUSHMARK (SP);
1573 PUTBACK; 1607 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1608 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1609
1577 FREETMPS; 1610 FREETMPS;
1578 LEAVE; 1611 LEAVE;
1579 } 1612 }
1580 1613
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1621api_is_ready (pTHX_ SV *coro_sv)
1589{ 1622{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1623 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1624}
1592 1625
1626/* expects to own a reference to next->hv */
1593INLINE void 1627INLINE void
1628prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1629{
1630 SV *prev_sv = SvRV (coro_current);
1631
1632 ta->prev = SvSTATE_hv (prev_sv);
1633 ta->next = next;
1634
1635 TRANSFER_CHECK (*ta);
1636
1637 SvRV_set (coro_current, (SV *)next->hv);
1638
1639 free_coro_mortal (aTHX);
1640 coro_mortal = prev_sv;
1641}
1642
1643static void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1644prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1595{ 1645{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;) 1646 for (;;)
1599 { 1647 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX); 1648 SV *next_sv = coro_deq (aTHX);
1602 1649
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv)) 1650 if (expect_true (next_sv))
1605 { 1651 {
1652 struct coro *next = SvSTATE_hv (next_sv);
1653
1654 /* cannot transfer to destroyed coros, skip and look for next */
1655 if (expect_false (next->flags & CF_DESTROYED))
1656 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1657 else
1658 {
1659 next->flags &= ~CF_READY;
1660 --coro_nready;
1661
1662 return prepare_schedule_to (aTHX_ ta, next);
1663 }
1664 }
1665 else
1666 {
1667 /* nothing to schedule: call the idle handler */
1606 dSP; 1668 dSP;
1607 UNLOCK;
1608 1669
1609 ENTER; 1670 ENTER;
1610 SAVETMPS; 1671 SAVETMPS;
1611 1672
1612 PUSHMARK (SP); 1673 PUSHMARK (SP);
1613 PUTBACK; 1674 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1615 SPAGAIN;
1616 1676
1617 FREETMPS; 1677 FREETMPS;
1618 LEAVE; 1678 LEAVE;
1619 continue;
1620 } 1679 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 } 1680 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv);
1641 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv);
1645
1646 LOCK;
1647 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv;
1649 UNLOCK;
1650} 1681}
1651 1682
1652INLINE void 1683INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1685{
… …
1675{ 1706{
1676 struct coro_transfer_args ta; 1707 struct coro_transfer_args ta;
1677 1708
1678 prepare_schedule (aTHX_ &ta); 1709 prepare_schedule (aTHX_ &ta);
1679 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);
1680} 1721}
1681 1722
1682static int 1723static int
1683api_cede (pTHX) 1724api_cede (pTHX)
1684{ 1725{
… …
1718 if (flags & CC_TRACE) 1759 if (flags & CC_TRACE)
1719 { 1760 {
1720 if (!coro->cctx) 1761 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1762 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1763 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1764 croak ("cannot enable tracing on coroutine with custom stack,");
1724 1765
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1766 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1767 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1768 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1769 {
… …
1733 else 1774 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1775 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1776 }
1736} 1777}
1737 1778
1738#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
1739static int 1835static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1837{
1742 AV *padlist; 1838 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1839 struct coro *coro = (struct coro *)frame->data;
1744 1840
1745 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 }
1746 1964
1747 return 0; 1965 return 0;
1748} 1966}
1749 1967
1750static MGVTBL coro_gensub_vtbl = { 1968static void
1751 0, 0, 0, 0, 1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1970{
1753}; 1971 SV *cb;
1754#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}
1755 2259
1756/*****************************************************************************/ 2260/*****************************************************************************/
1757/* PerlIO::cede */ 2261/* PerlIO::cede */
1758 2262
1759typedef struct 2263typedef struct
… …
1827 PerlIOBuf_get_cnt, 2331 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2332 PerlIOBuf_set_ptrcnt,
1829}; 2333};
1830 2334
1831/*****************************************************************************/ 2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
1832 2337
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2338static SV *
1843pp_restore (pTHX) 2339coro_waitarray_new (pTHX_ int count)
1844{ 2340{
1845 dSP; 2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
1846 2344
1847 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);
1848 2353
1849 EXTEND (SP, 3); 2354 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2355}
1856 2356
1857static void 2357/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2358
1864static void 2359static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2361{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2362 SV *count_sv = AvARRAY (av)[0];
1868} 2363 IV count = SvIVX (count_sv);
1869 2364
1870static void 2365 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2366 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2367
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2368 /* now wake up as many waiters as are expected to lock */
1877} 2369 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2370 {
1912 /* first iteration */ 2371 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2372
1919 /* 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 */
1920 /* for us, divert to the real entersub */ 2374 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2375 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2376 cb = av_shift (av);
1923 2377
1924 /* pop args */ 2378 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2379 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2380 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2381 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2382 }
1934 2383 else if (SvTYPE (cb) == SVt_PVCV)
2384 {
2385 dSP;
2386 PUSHMARK (SP);
2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2388 PUTBACK;
2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2390 }
1936 2391
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2392 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2393 }
1949 struct coro_transfer_args ta; 2394}
1950 2395
1951 slf_frame.prepare (aTHX_ &ta); 2396static void
1952 TRANSFER (ta, 0); 2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2398{
2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2401}
1953 2402
1954 checkmark = PL_stack_sp - PL_stack_base; 2403static int
2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2405{
2406 AV *av = (AV *)frame->data;
2407 SV *count_sv = AvARRAY (av)[0];
2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2412 else if (SvIVX (count_sv) > 0)
1955 } 2413 {
1956 while (slf_frame.check (aTHX)); 2414 SvSTATE_current->on_destroy = 0;
1957 2415
2416 if (acquire)
2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2421 return 0;
2422 }
2423 else
2424 {
2425 int i;
2426 /* if we were woken up but can't down, we look through the whole */
2427 /* waiters list and only add us if we aren't in there already */
2428 /* this avoids some degenerate memory usage cases */
2429
2430 for (i = 1; i <= AvFILLp (av); ++i)
2431 if (AvARRAY (av)[i] == SvRV (coro_current))
2432 return 1;
2433
2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2435 return 1;
2436 }
2437}
2438
2439static int
2440slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2441{
2442 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2443}
2444
2445static int
2446slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2449}
2450
2451static void
2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2453{
2454 AV *av = (AV *)SvRV (arg [0]);
2455
2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2457 {
2458 frame->data = (void *)av;
2459 frame->prepare = prepare_nop;
2460 }
2461 else
2462 {
2463 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2464
2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2466 frame->prepare = prepare_schedule;
2467
2468 /* to avoid race conditions when a woken-up coro gets terminated */
2469 /* we arrange for a temporary on_destroy that calls adjust (0) */
2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2471 }
2472}
2473
2474static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2476{
2477 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2478 frame->check = slf_check_semaphore_down;
2479}
2480
2481static void
2482slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 if (items >= 2)
2485 {
2486 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2489
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2491
2492 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0);
2494
2495 frame->prepare = prepare_nop;
2496 frame->check = slf_check_nop;
2497 }
2498 else
2499 {
2500 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2501 frame->check = slf_check_semaphore_wait;
2502 }
2503}
2504
2505/* signal */
2506
2507static void
2508coro_signal_wake (pTHX_ AV *av, int count)
2509{
2510 SvIVX (AvARRAY (av)[0]) = 0;
2511
2512 /* now signal count waiters */
2513 while (count > 0 && AvFILLp (av) > 0)
2514 {
2515 SV *cb;
2516
2517 /* swap first two elements so we can shift a waiter */
2518 cb = AvARRAY (av)[0];
2519 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb;
2521
2522 cb = av_shift (av);
2523
2524 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */
2526 SvREFCNT_dec (cb);
2527
2528 --count;
2529 }
2530}
2531
2532static int
2533slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2534{
2535 /* if we are about to throw, also stop waiting */
2536 return SvROK ((SV *)frame->data) && !CORO_THROW;
2537}
2538
2539static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 AV *av = (AV *)SvRV (arg [0]);
2543
2544 if (SvIVX (AvARRAY (av)[0]))
2545 {
2546 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop;
2549 }
2550 else
2551 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2553
2554 av_push (av, waiter);
2555
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule;
2558 frame->check = slf_check_signal_wait;
2559 }
2560}
2561
2562/*****************************************************************************/
2563/* Coro::AIO */
2564
2565#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2566
2567/* helper storage struct */
2568struct io_state
2569{
2570 int errorno;
2571 I32 laststype; /* U16 in 5.10.0 */
2572 int laststatval;
2573 Stat_t statcache;
2574};
2575
2576static void
2577coro_aio_callback (pTHX_ CV *cv)
2578{
2579 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG;
2581 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state));
2583
2584 av_extend (state, items - 1);
2585
2586 sv_upgrade (data_sv, SVt_PV);
2587 SvCUR_set (data_sv, sizeof (struct io_state));
2588 SvPOK_only (data_sv);
2589
2590 {
2591 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2592
2593 data->errorno = errno;
2594 data->laststype = PL_laststype;
2595 data->laststatval = PL_laststatval;
2596 data->statcache = PL_statcache;
2597 }
2598
2599 /* now build the result vector out of all the parameters and the data_sv */
2600 {
2601 int i;
2602
2603 for (i = 0; i < items; ++i)
2604 av_push (state, SvREFCNT_inc_NN (ST (i)));
2605 }
2606
2607 av_push (state, data_sv);
2608
2609 api_ready (aTHX_ coro);
2610 SvREFCNT_dec (coro);
2611 SvREFCNT_dec ((AV *)state);
2612}
2613
2614static int
2615slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2616{
2617 AV *state = (AV *)frame->data;
2618
2619 /* if we are about to throw, return early */
2620 /* this does not cancel the aio request, but at least */
2621 /* it quickly returns */
2622 if (CORO_THROW)
2623 return 0;
2624
2625 /* one element that is an RV? repeat! */
2626 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2627 return 1;
2628
2629 /* restore status */
2630 {
2631 SV *data_sv = av_pop (state);
2632 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2633
2634 errno = data->errorno;
2635 PL_laststype = data->laststype;
2636 PL_laststatval = data->laststatval;
2637 PL_statcache = data->statcache;
2638
2639 SvREFCNT_dec (data_sv);
2640 }
2641
2642 /* push result values */
1958 { 2643 {
1959 dSP; 2644 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2645 int i;
1961 int gimme = GIMME_V;
1962 2646
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2647 EXTEND (SP, AvFILLp (state) + 1);
1964 2648 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2649 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2650
1974 PUTBACK; 2651 PUTBACK;
1975 } 2652 }
1976 2653
1977 return NORMAL; 2654 return 0;
1978} 2655}
1979 2656
1980static void 2657static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2658slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2659{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2660 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2661 SV *coro_hv = SvRV (coro_current);
2662 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2663
1986 if (items > 2) 2664 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2665 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2666
1989 CvFLAGS (cv) |= CVf_SLF; 2667 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2668 if (coro->prio)
1991 slf_cv = cv; 2669 {
2670 dSP;
1992 2671
1993 /* we patch the op, and then re-run the whole call */ 2672 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2673 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2674
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2675 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2676 {
2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2678 prio_sv = newSViv (0);
2679 }
2003 2680
2004 PL_op->op_ppaddr = pp_slf; 2681 PUSHMARK (SP);
2682 sv_setiv (prio_sv, coro->prio);
2683 XPUSHs (prio_sv);
2005 2684
2006 PL_op = (OP *)&slf_restore; 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;
2007} 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/*****************************************************************************/
2008 2728
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2730
2011PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
2012 2732
2013BOOT: 2733BOOT:
2014{ 2734{
2015#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2736# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2737 coro_thx = PERL_GET_CONTEXT;
2019# endif 2738# endif
2020#endif 2739#endif
2021 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
… …
2042 main_top_env = PL_top_env; 2761 main_top_env = PL_top_env;
2043 2762
2044 while (main_top_env->je_prev) 2763 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 2764 main_top_env = main_top_env->je_prev;
2046 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,
2771 newSVpv ("coro_slf", 0), 0);
2772
2773 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2774 hv_store_ent (PL_custom_op_descs, slf,
2775 newSVpv ("coro schedule like function", 0), 0);
2776 }
2777
2047 coroapi.ver = CORO_API_VERSION; 2778 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 2779 coroapi.rev = CORO_API_REVISION;
2780
2049 coroapi.transfer = api_transfer; 2781 coroapi.transfer = api_transfer;
2782
2783 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 2784 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 2785 coroapi.prepare_nop = prepare_nop;
2786 coroapi.prepare_schedule = prepare_schedule;
2787 coroapi.prepare_cede = prepare_cede;
2788 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 2789
2053 { 2790 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2791 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 2792
2056 if (!svp) croak ("Time::HiRes is required"); 2793 if (!svp) croak ("Time::HiRes is required");
… …
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2799 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2063} 2800}
2064 2801
2065SV * 2802SV *
2066new (char *klass, ...) 2803new (char *klass, ...)
2804 ALIAS:
2805 Coro::new = 1
2067 CODE: 2806 CODE:
2068{ 2807{
2069 struct coro *coro; 2808 struct coro *coro;
2070 MAGIC *mg; 2809 MAGIC *mg;
2071 HV *hv; 2810 HV *hv;
2811 CV *cb;
2072 int i; 2812 int i;
2813
2814 if (items > 1)
2815 {
2816 cb = coro_sv_2cv (aTHX_ ST (1));
2817
2818 if (!ix)
2819 {
2820 if (CvISXSUB (cb))
2821 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2822
2823 if (!CvROOT (cb))
2824 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2825 }
2826 }
2073 2827
2074 Newz (0, coro, 1, struct coro); 2828 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV (); 2829 coro->args = newAV ();
2076 coro->flags = CF_NEW; 2830 coro->flags = CF_NEW;
2077 2831
… …
2082 coro->hv = hv = newHV (); 2836 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2837 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP; 2838 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2839 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086 2840
2841 if (items > 1)
2842 {
2087 av_extend (coro->args, items - 1); 2843 av_extend (coro->args, items - 1 + ix - 1);
2844
2845 if (ix)
2846 {
2847 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2848 cb = cv_coro_run;
2849 }
2850
2851 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2852
2088 for (i = 1; i < items; i++) 2853 for (i = 2; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i))); 2854 av_push (coro->args, newSVsv (ST (i)));
2855 }
2090} 2856}
2091 OUTPUT: 2857 OUTPUT:
2092 RETVAL 2858 RETVAL
2093 2859
2094void 2860void
2095_set_stacklevel (...) 2861transfer (...)
2862 PROTOTYPE: $$
2096 CODE: 2863 CODE:
2097{ 2864 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101
2102void
2103transfer (...)
2104 CODE:
2105{
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 2865
2110bool 2866bool
2111_destroy (SV *coro_sv) 2867_destroy (SV *coro_sv)
2112 CODE: 2868 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2869 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2120 CODE: 2876 CODE:
2121 _exit (code); 2877 _exit (code);
2122 2878
2123int 2879int
2124cctx_stacksize (int new_stacksize = 0) 2880cctx_stacksize (int new_stacksize = 0)
2881 PROTOTYPE: ;$
2125 CODE: 2882 CODE:
2126 RETVAL = cctx_stacksize; 2883 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 2884 if (new_stacksize)
2128 { 2885 {
2129 cctx_stacksize = new_stacksize; 2886 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 2889 OUTPUT:
2133 RETVAL 2890 RETVAL
2134 2891
2135int 2892int
2136cctx_max_idle (int max_idle = 0) 2893cctx_max_idle (int max_idle = 0)
2894 PROTOTYPE: ;$
2137 CODE: 2895 CODE:
2138 RETVAL = cctx_max_idle; 2896 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 2897 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 2898 cctx_max_idle = max_idle;
2141 OUTPUT: 2899 OUTPUT:
2142 RETVAL 2900 RETVAL
2143 2901
2144int 2902int
2145cctx_count () 2903cctx_count ()
2904 PROTOTYPE:
2146 CODE: 2905 CODE:
2147 RETVAL = cctx_count; 2906 RETVAL = cctx_count;
2148 OUTPUT: 2907 OUTPUT:
2149 RETVAL 2908 RETVAL
2150 2909
2151int 2910int
2152cctx_idle () 2911cctx_idle ()
2912 PROTOTYPE:
2153 CODE: 2913 CODE:
2154 RETVAL = cctx_idle; 2914 RETVAL = cctx_idle;
2155 OUTPUT: 2915 OUTPUT:
2156 RETVAL 2916 RETVAL
2157 2917
2158void 2918void
2159list () 2919list ()
2920 PROTOTYPE:
2160 PPCODE: 2921 PPCODE:
2161{ 2922{
2162 struct coro *coro; 2923 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 2924 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 2925 if (coro->hv)
… …
2226 2987
2227void 2988void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 2989throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 2990 PROTOTYPE: $;$
2230 CODE: 2991 CODE:
2992{
2993 struct coro *current = SvSTATE_current;
2994 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 2995 SvREFCNT_dec (*throwp);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2996 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2997}
2233 2998
2234void 2999void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3000api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3001 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3002 C_ARGS: aTHX_ coro, flags
2237 3003
2238SV * 3004SV *
2239has_cctx (Coro::State coro) 3005has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3006 PROTOTYPE: $
… …
2265 OUTPUT: 3031 OUTPUT:
2266 RETVAL 3032 RETVAL
2267 3033
2268void 3034void
2269force_cctx () 3035force_cctx ()
3036 PROTOTYPE:
2270 CODE: 3037 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3038 SvSTATE_current->cctx->idle_sp = 0;
2273 3039
2274void 3040void
2275swap_defsv (Coro::State self) 3041swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3042 PROTOTYPE: $
2277 ALIAS: 3043 ALIAS:
2278 swap_defav = 1 3044 swap_defav = 1
2279 CODE: 3045 CODE:
2280 if (!self->slot) 3046 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3047 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3048 else
2283 { 3049 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3050 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3051 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3052
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3053 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3054 }
2289 3055
3056
2290MODULE = Coro::State PACKAGE = Coro 3057MODULE = Coro::State PACKAGE = Coro
2291 3058
2292BOOT: 3059BOOT:
2293{ 3060{
2294 int i; 3061 int i;
2295 3062
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3063 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3064 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3065 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3066 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3067 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3068 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3069 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3070 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3071
3072 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3073 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3074 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3075 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2302 3076
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3077 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3078
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3079 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3080 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2314 3088
2315 { 3089 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3090 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3091
2318 coroapi.schedule = api_schedule; 3092 coroapi.schedule = api_schedule;
3093 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3094 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3095 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3096 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3097 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3098 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3099 coroapi.current = coro_current;
2325 3100
2326 GCoroAPI = &coroapi; 3101 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3102 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3103 SvREADONLY_on (sv);
2329 } 3104 }
2330} 3105}
2331 3106
2332void 3107void
3108terminate (...)
3109 CODE:
3110 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3111
3112void
2333schedule (...) 3113schedule (...)
2334 CODE: 3114 CODE:
2335{ 3115 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3116
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3117void
2338} 3118schedule_to (...)
3119 CODE:
3120 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3121
3122void
3123cede_to (...)
3124 CODE:
3125 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3126
2340void 3127void
2341cede (...) 3128cede (...)
2342 CODE: 3129 CODE:
2343{ 3130 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3131
2348void 3132void
2349cede_notself (...) 3133cede_notself (...)
2350 CODE: 3134 CODE:
2351{ 3135 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop }; 3136
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3137void
2354} 3138_cancel (Coro::State self)
3139 CODE:
3140 coro_state_destroy (aTHX_ self);
3141 coro_call_on_destroy (aTHX_ self);
2355 3142
2356void 3143void
2357_set_current (SV *current) 3144_set_current (SV *current)
2358 PROTOTYPE: $ 3145 PROTOTYPE: $
2359 CODE: 3146 CODE:
… …
2362 3149
2363void 3150void
2364_set_readyhook (SV *hook) 3151_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3152 PROTOTYPE: $
2366 CODE: 3153 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3154 SvREFCNT_dec (coro_readyhook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3155 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 3156
2372int 3157int
2373prio (Coro::State coro, int newprio = 0) 3158prio (Coro::State coro, int newprio = 0)
3159 PROTOTYPE: $;$
2374 ALIAS: 3160 ALIAS:
2375 nice = 1 3161 nice = 1
2376 CODE: 3162 CODE:
2377{ 3163{
2378 RETVAL = coro->prio; 3164 RETVAL = coro->prio;
… …
2405 CODE: 3191 CODE:
2406 RETVAL = coro_nready; 3192 RETVAL = coro_nready;
2407 OUTPUT: 3193 OUTPUT:
2408 RETVAL 3194 RETVAL
2409 3195
2410# for async_pool speedup
2411void 3196void
2412_pool_1 (SV *cb) 3197_pool_handler (...)
2413 CODE: 3198 CODE:
2414{ 3199 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3200
2422 if (!invoke) 3201void
3202async_pool (SV *cv, ...)
3203 PROTOTYPE: &@
3204 PPCODE:
3205{
3206 HV *hv = (HV *)av_pop (av_async_pool);
3207 AV *av = newAV ();
3208 SV *cb = ST (0);
3209 int i;
3210
3211 av_extend (av, items - 2);
3212 for (i = 1; i < items; ++i)
3213 av_push (av, SvREFCNT_inc_NN (ST (i)));
3214
3215 if ((SV *)hv == &PL_sv_undef)
2423 { 3216 {
2424 SV *old = PL_diehook; 3217 PUSHMARK (SP);
2425 PL_diehook = 0; 3218 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3219 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3220 PUSHs ((SV *)cv_pool_handler);
3221 PUTBACK;
3222 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3223 SPAGAIN;
3224
3225 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3226 }
2429 3227
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3228 {
2443 av_fill (defav, len - 1); 3229 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3230
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3231 assert (!coro->invoke_cb);
3232 assert (!coro->invoke_av);
3233 coro->invoke_cb = SvREFCNT_inc (cb);
3234 coro->invoke_av = av;
2446 } 3235 }
2447 3236
3237 api_ready (aTHX_ (SV *)hv);
3238
3239 if (GIMME_V != G_VOID)
3240 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3241 else
2448 SvREFCNT_dec (invoke); 3242 SvREFCNT_dec (hv);
2449} 3243}
2450 3244
2451void 3245SV *
2452_pool_2 (SV *cb) 3246rouse_cb ()
3247 PROTOTYPE:
2453 CODE: 3248 CODE:
2454{ 3249 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3250 OUTPUT:
2527 RETVAL 3251 RETVAL
2528 3252
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3253void
2535_get_state (SV *self) 3254rouse_wait (...)
3255 PROTOTYPE: ;$
2536 PPCODE: 3256 PPCODE:
2537{ 3257 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545 3258
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550 3259
2551 av_extend (av, AvFILLp (defav) + 1 + 1); 3260MODULE = Coro::State PACKAGE = PerlIO::cede
2552 3261
2553 for (i = 0; i <= AvFILLp (defav); ++i) 3262BOOT:
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3263 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555 3264
2556 av_push (av, data_sv);
2557 3265
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3266MODULE = Coro::State PACKAGE = Coro::Semaphore
2559 3267
2560 api_ready (aTHX_ self); 3268SV *
2561} 3269new (SV *klass, SV *count = 0)
3270 CODE:
3271 RETVAL = sv_bless (
3272 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3273 GvSTASH (CvGV (cv))
3274 );
3275 OUTPUT:
3276 RETVAL
3277
3278# helper for Coro::Channel
3279SV *
3280_alloc (int count)
3281 CODE:
3282 RETVAL = coro_waitarray_new (aTHX_ count);
3283 OUTPUT:
3284 RETVAL
3285
3286SV *
3287count (SV *self)
3288 CODE:
3289 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3290 OUTPUT:
3291 RETVAL
2562 3292
2563void 3293void
2564_set_state (SV *state) 3294up (SV *self, int adjust = 1)
2565 PROTOTYPE: $ 3295 ALIAS:
3296 adjust = 1
3297 CODE:
3298 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3299
3300void
3301down (...)
3302 CODE:
3303 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3304
3305void
3306wait (...)
3307 CODE:
3308 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3309
3310void
3311try (SV *self)
3312 PPCODE:
3313{
3314 AV *av = (AV *)SvRV (self);
3315 SV *count_sv = AvARRAY (av)[0];
3316 IV count = SvIVX (count_sv);
3317
3318 if (count > 0)
3319 {
3320 --count;
3321 SvIVX (count_sv) = count;
3322 XSRETURN_YES;
3323 }
3324 else
3325 XSRETURN_NO;
3326}
3327
3328void
3329waiters (SV *self)
3330 PPCODE:
3331{
3332 AV *av = (AV *)SvRV (self);
3333 int wcount = AvFILLp (av) + 1 - 1;
3334
3335 if (GIMME_V == G_SCALAR)
3336 XPUSHs (sv_2mortal (newSViv (wcount)));
3337 else
3338 {
3339 int i;
3340 EXTEND (SP, wcount);
3341 for (i = 1; i <= wcount; ++i)
3342 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3343 }
3344}
3345
3346MODULE = Coro::State PACKAGE = Coro::Signal
3347
3348SV *
3349new (SV *klass)
2566 PPCODE: 3350 CODE:
3351 RETVAL = sv_bless (
3352 coro_waitarray_new (aTHX_ 0),
3353 GvSTASH (CvGV (cv))
3354 );
3355 OUTPUT:
3356 RETVAL
3357
3358void
3359wait (...)
3360 CODE:
3361 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3362
3363void
3364broadcast (SV *self)
3365 CODE:
2567{ 3366{
2568 AV *av = (AV *)SvRV (state); 3367 AV *av = (AV *)SvRV (self);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3368 coro_signal_wake (aTHX_ av, AvFILLp (av));
2570 int i; 3369}
2571 3370
2572 errno = data->errorno; 3371void
2573 PL_laststype = data->laststype; 3372send (SV *self)
2574 PL_laststatval = data->laststatval; 3373 CODE:
2575 PL_statcache = data->statcache; 3374{
3375 AV *av = (AV *)SvRV (self);
2576 3376
2577 EXTEND (SP, AvFILLp (av)); 3377 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3378 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3379 else
3380 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3381}
3382
3383IV
3384awaited (SV *self)
3385 CODE:
3386 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3387 OUTPUT:
3388 RETVAL
2581 3389
2582 3390
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3391MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3392
2585BOOT: 3393BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3395
2588SV * 3396void
2589_schedule (...) 3397_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3398 CODE:
2592{ 3399{
2593 static int incede; 3400 static int incede;
2594 3401
2595 api_cede_notself (aTHX); 3402 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3408 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3409 if (coro_nready >= incede)
2603 { 3410 {
2604 PUSHMARK (SP); 3411 PUSHMARK (SP);
2605 PUTBACK; 3412 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3413 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3414 }
2609 3415
2610 --incede; 3416 --incede;
2611} 3417}
2612 3418
2613 3419
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3420MODULE = Coro::State PACKAGE = Coro::AIO
2615 3421
2616BOOT: 3422void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3423_register (char *target, char *proto, SV *req)
3424 CODE:
3425{
3426 CV *req_cv = coro_sv_2cv (aTHX_ req);
3427 /* newXSproto doesn't return the CV on 5.8 */
3428 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3429 sv_setpv ((SV *)slf_cv, proto);
3430 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3431}
2618 3432

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