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Comparing Coro/Coro/State.xs (file contents):
Revision 1.274 by root, Sat Nov 15 00:08:30 2008 UTC vs.
Revision 1.329 by root, Tue Nov 25 20:48:41 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
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#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 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
187 181
188static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 184static SV *rv_diehook;
191static SV *rv_warnhook; 185static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
193 187
194/* async_pool helper stuff */ 188/* async_pool helper stuff */
195static SV *sv_pool_rss; 189static SV *sv_pool_rss;
196static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
198 196
199/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
200static SV *sv_activity; 198static SV *sv_activity;
201 199
202static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 229 int valgrind_id;
232#endif 230#endif
233 unsigned char flags; 231 unsigned char flags;
234} coro_cctx; 232} coro_cctx;
235 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
236enum { 238enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
245{ 247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
… …
257/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
258struct coro { 261struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 263 coro_cctx *cctx;
261 264
262 /* process data */ 265 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 267 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
266 269
270 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
271 276
272 /* statistics */ 277 /* statistics */
273 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
274 279
275 /* coro process data */ 280 /* coro process data */
276 int prio; 281 int prio;
277 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
278 284
279 /* async_pool */ 285 /* async_pool */
280 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
281 289
282 /* linked list */ 290 /* linked list */
283 struct coro *next, *prev; 291 struct coro *next, *prev;
284}; 292};
285 293
286typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
288 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
290 301
291/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
292 303
293#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
299 310
300/* for Coro.pm */ 311/* for Coro.pm */
301static SV *coro_current; 312static SV *coro_current;
302static SV *coro_readyhook; 313static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 316static struct coro *coro_first;
305#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
339static AV * 360static AV *
340coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
341{ 362{
342 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
344 365
345 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 417
397 return 0; 418 return 0;
398} 419}
399 420
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 423
403static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 425 0, 0, 0, 0,
405 coro_cv_free 426 coro_cv_free
406}; 427};
407 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
408#define CORO_MAGIC(sv, type) \ 434#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 437 : 0)
414 438
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 439#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) 440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 441
418INLINE struct coro * 442INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
420{ 444{
421 HV *stash; 445 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
440} 464}
441 465
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 471
444/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
445static void 473static void
446get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
447{ 475{
… …
453 else 481 else
454 { 482 {
455#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
462#else 490#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 492#endif
465 } 493 }
466} 494}
467 495
468static void 496static void
… …
490 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
491 c->slot = 0; 519 c->slot = 0;
492 520
493 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
494 522
495 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
499 528
500 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 530 # include "state.h"
502 #undef VAR 531 #undef VAR
503 532
… …
515 } 544 }
516 545
517 PUTBACK; 546 PUTBACK;
518 } 547 }
519 548
520 slf_frame = c->slf_frame; 549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
521} 551}
522 552
523static void 553static void
524save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
525{ 555{
556 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 557 c->slf_frame = slf_frame;
527 558
528 { 559 {
529 dSP; 560 dSP;
530 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
… …
587 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
588 619
589 { 620 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 622
592 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
596 628
597 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 630 # include "state.h"
599 #undef VAR 631 #undef VAR
600 } 632 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
608 */ 640 */
609#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
611#else 643#else
612static void 644static void
613coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
614{ 646{
615 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 711 Safefree (PL_retstack);
680#endif 712#endif
681} 713}
682 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
683static size_t 724static size_t
684coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
685{ 726{
686 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
687 728
688 if (coro->mainstack) 729 if (coro->mainstack)
689 { 730 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
694 { 732 {
695 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
696 734 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 735 #undef SYM
700 } 736 }
701 else 737 else
702 slot = coro->slot;
703
704 if (slot)
705 { 738 {
706 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #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 } 742 }
718 } 743 }
719 744
720 return rss; 745 return rss;
721} 746}
… …
811 836
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 838}
814 839
815static void 840static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 841prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 842{
818 /* kind of mega-hacky, but works */ 843 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 844 ta->next = ta->prev = (struct coro *)ta;
820} 845}
821 846
822static int 847static int
823slf_check_nop (aTHX) 848slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 849{
825 return 0; 850 return 0;
826} 851}
827 852
828static void 853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
830{ 863{
831 /* 864 /*
832 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
833 */ 866 */
… …
835 868
836 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 876 PL_curpm = 0;
841 PL_curpad = 0; 877 PL_curpad = 0;
842 PL_localizing = 0; 878 PL_localizing = 0;
843 PL_dirty = 0; 879 PL_dirty = 0;
844 PL_restartop = 0; 880 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 882 PL_parser = 0;
847#endif 883#endif
884 PL_hints = 0;
848 885
849 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 889
853 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 897
860 { 898 {
861 dSP; 899 dSP;
862 UNOP myop; 900 UNOP myop;
863 901
864 Zero (&myop, 1, UNOP); 902 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
867 906
868 PUSHMARK (SP); 907 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 909 PUTBACK;
871 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 912 }
875 913
876 /* this newly created coroutine might be run on an existing cctx which most 914 /* 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. 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 916 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 917 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 */ 918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
881} 930}
882 931
883static void 932static void
884coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
885{ 934{
… …
904 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
905 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
906 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
907 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
909 959
910 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
912 962
913 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
915 967
916 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
917} 969}
918 970
919INLINE void 971INLINE void
… …
929static int 981static int
930runops_trace (pTHX) 982runops_trace (pTHX)
931{ 983{
932 COP *oldcop = 0; 984 COP *oldcop = 0;
933 int oldcxix = -2; 985 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 986
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 988 {
939 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
940 990
941 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
942 { 992 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 994 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 996 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
948 SV **cb; 998 SV **cb;
… …
985 1035
986 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
987 { 1037 {
988 SV **cb; 1038 SV **cb;
989 1039
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1041 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1043
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1045 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1046 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
1000 1049
1001 if (isGV (gv)) 1050 if (isGV (gv))
… …
1006 SAVETMPS; 1055 SAVETMPS;
1007 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1057 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1059 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1061 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 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); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1064 SPAGAIN;
1016 FREETMPS; 1065 FREETMPS;
… …
1019 } 1068 }
1020 1069
1021 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
1022 } 1071 }
1023 1072
1024 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1074 {
1026 dSP; 1075 dSP;
1027 1076
1028 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1078 ENTER;
… …
1048 1097
1049 TAINT_NOT; 1098 TAINT_NOT;
1050 return 0; 1099 return 0;
1051} 1100}
1052 1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1053static void 1104static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1106{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1107 ta->prev = 0;
1058} 1108}
1059 1109
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1110static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1112{
1063/* also initialises PL_top_env */ 1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1119static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1066{ 1121{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1071 1123
1072 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1074 1126
1075 Zero (&myop, 1, UNOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1131
1079 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1134
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1137}
1088 1138
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1140INLINE void
1091transfer_tail (pTHX) 1141transfer_tail (pTHX)
1092{ 1142{
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); 1143 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} 1144}
1109 1145
1110/* 1146/*
1111 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1148 */
… …
1124 /* normally we would need to skip the entersub here */ 1160 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1161 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1162 /* PL_nop = PL_nop->op_next */
1127 1163
1128 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1130 1166
1131 /* cctx_run is the alternative tail of transfer() */ 1167 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1168 transfer_tail (aTHX);
1134 1169
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1138 1177
1139 /* 1178 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1179 * 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) 1180 * 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 1181 * reason for perl_run to return. We try to exit by jumping to the
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1186 */
1146 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1189 }
1149} 1190}
… …
1226cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
1227{ 1268{
1228 if (!cctx) 1269 if (!cctx)
1229 return; 1270 return;
1230 1271
1272 assert (cctx != cctx_current);//D temporary
1273
1231 --cctx_count; 1274 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1275 coro_destroy (&cctx->cctx);
1233 1276
1234 /* coro_transfer creates new, empty cctx's */ 1277 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1278 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
1294 1337
1295static void 1338static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1298 if (expect_true (prev != next)) 1343 if (expect_true (prev != next))
1299 { 1344 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1345 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,"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1302 1347
1303 if (expect_false (next->flags & CF_RUNNING)) 1348 if (expect_false (next->flags & CF_RUNNING))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305 1350
1306 if (expect_false (next->flags & CF_DESTROYED)) 1351 if (expect_false (next->flags & CF_DESTROYED))
… …
1312#endif 1357#endif
1313 } 1358 }
1314} 1359}
1315 1360
1316/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
1317static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1364{
1320 dSTACKLEVEL; 1365 dSTACKLEVEL;
1321 1366
1322 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1368 if (expect_false (!prev))
1324 { 1369 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1370 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1372 }
1328 else if (expect_true (prev != next)) 1373 else if (expect_true (prev != next))
1329 { 1374 {
1330 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
1331 1376
1332 if (expect_false (prev->flags & CF_NEW)) 1377 if (expect_false (prev->flags & CF_NEW))
1333 { 1378 {
1334 /* create a new empty/source context */ 1379 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1338 } 1382 }
1339 1383
1340 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1386
1345 /* first get rid of the old state */ 1387 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1388 save_perl (aTHX_ prev);
1347 1389
1348 if (expect_false (next->flags & CF_NEW)) 1390 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1354 } 1396 }
1355 else 1397 else
1356 load_perl (aTHX_ next); 1398 load_perl (aTHX_ next);
1357 1399
1358 prev__cctx = prev->cctx; 1400 assert (!prev->cctx);//D temporary
1359 1401
1360 /* possibly untie and reuse the cctx */ 1402 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1403 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1404 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1405 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1406 && !force_cctx
1365 )) 1407 ))
1366 { 1408 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1411
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1415 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1377 1417
1378 cctx_put (prev__cctx); 1418 cctx_put (cctx_current);
1379 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1380 1422
1381 ++next->usecount; 1423 ++next->usecount;
1382 1424
1383 if (expect_true (!next->cctx)) 1425 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1427
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1428 next->cctx = 0;
1387 transfer_next = next;
1388 1429
1389 if (expect_false (prev__cctx != next->cctx)) 1430 if (expect_false (cctx_prev != cctx_current))
1390 { 1431 {
1391 prev__cctx->top_env = PL_top_env; 1432 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1433 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1435 }
1395 1436
1396 transfer_tail (aTHX); 1437 transfer_tail (aTHX);
1397 } 1438 }
1398} 1439}
… …
1405static int 1446static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1448{
1408 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1409 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1410 1454
1411 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1412 1456
1413 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1414 { 1458 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1461 --coro_nready;
1419 UNLOCK;
1420 } 1462 }
1421 else 1463 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1465
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1478
1437 coro->slot = 0; 1479 coro->slot = 0;
1438 } 1480 }
1439 1481
1440 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1442 1486
1443 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1446 1490
… …
1500 1544
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1546 TRANSFER (ta, 1);
1503} 1547}
1504 1548
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1570}
1571
1505/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1506 1573
1507static void 1574INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1509{ 1576{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1578}
1512 1579
1513static SV * 1580INLINE SV *
1514coro_deq (pTHX) 1581coro_deq (pTHX)
1515{ 1582{
1516 int prio; 1583 int prio;
1517 1584
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1527{ 1594{
1528 struct coro *coro; 1595 struct coro *coro;
1529 SV *sv_hook; 1596 SV *sv_hook;
1530 void (*xs_hook)(void); 1597 void (*xs_hook)(void);
1531 1598
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1536 1600
1537 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1538 return 0; 1602 return 0;
1539 1603
1540 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1541 1605
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1608
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1609 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1610 ++coro_nready;
1549 1611
1550 UNLOCK;
1551
1552 if (sv_hook) 1612 if (sv_hook)
1553 { 1613 {
1554 dSP; 1614 dSP;
1555 1615
1556 ENTER; 1616 ENTER;
1557 SAVETMPS; 1617 SAVETMPS;
1558 1618
1559 PUSHMARK (SP); 1619 PUSHMARK (SP);
1560 PUTBACK; 1620 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1622
1564 FREETMPS; 1623 FREETMPS;
1565 LEAVE; 1624 LEAVE;
1566 } 1625 }
1567 1626
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1576{ 1635{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1637}
1579 1638
1639/* expects to own a reference to next->hv */
1580INLINE void 1640INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1642{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
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 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1643 SV *prev_sv = SvRV (coro_current);
1644
1627 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1628 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1649
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1632 1651
1633 LOCK;
1634 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1636 UNLOCK; 1654}
1655
1656static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{
1659 for (;;)
1660 {
1661 SV *next_sv = coro_deq (aTHX);
1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1681 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1637} 1705}
1638 1706
1639INLINE void 1707INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1709{
… …
1662{ 1730{
1663 struct coro_transfer_args ta; 1731 struct coro_transfer_args ta;
1664 1732
1665 prepare_schedule (aTHX_ &ta); 1733 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1667} 1745}
1668 1746
1669static int 1747static int
1670api_cede (pTHX) 1748api_cede (pTHX)
1671{ 1749{
… …
1700static void 1778static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1780{
1703 struct coro *coro = SvSTATE (coro_sv); 1781 struct coro *coro = SvSTATE (coro_sv);
1704 1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1785
1705 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1706 { 1787 {
1707 if (!coro->cctx) 1788 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1789 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1792
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1794 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1796 {
… …
1720 else 1801 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1803 }
1723} 1804}
1724 1805
1725#if 0 1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1726static int 1862static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1864{
1729 AV *padlist; 1865 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1866 struct coro *coro = (struct coro *)frame->data;
1731 1867
1732 abort (); 1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1733 1991
1734 return 0; 1992 return 0;
1735} 1993}
1736 1994
1737static MGVTBL coro_gensub_vtbl = { 1995static void
1738 0, 0, 0, 0, 1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1997{
1740}; 1998 SV *cb;
1741#endif 1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
1742 2286
1743/*****************************************************************************/ 2287/*****************************************************************************/
1744/* PerlIO::cede */ 2288/* PerlIO::cede */
1745 2289
1746typedef struct 2290typedef struct
… …
1814 PerlIOBuf_get_cnt, 2358 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2359 PerlIOBuf_set_ptrcnt,
1816}; 2360};
1817 2361
1818/*****************************************************************************/ 2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
1819 2364
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 * 2365static SV *
1831pp_restore (pTHX) 2366coro_waitarray_new (pTHX_ int count)
1832{ 2367{
1833 dSP; 2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
1834 2371
1835 PUSHMARK (SP); 2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375#if PERL_VERSION_ATLEAST (5,10,0)
2376 AvARRAY (av) = ary;
2377#else
2378 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2379 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2380 SvPVX ((SV *)av) = (char *)ary;
2381#endif
2382 AvMAX (av) = 1;
2383 AvFILLp (av) = 0;
2384 ary [0] = newSViv (count);
1836 2385
1837 EXTEND (SP, 3); 2386 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} 2387}
1845 2388
1846static void 2389/* 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 2390
1852static void 2391static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2392coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2393{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2394 SV *count_sv = AvARRAY (av)[0];
2395 IV count = SvIVX (count_sv);
1856 2396
1857 frame->prepare = slf_prepare_set_stacklevel; 2397 count += adjust;
1858 frame->check = slf_check_nop; 2398 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2399
1862static void 2400 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2401 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 { 2402 {
1921 /* first iteration */ 2403 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 2404
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2405 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2406 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2407 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2408 cb = av_shift (av);
1931 2409
1932 /* pop args */ 2410 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2411 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2412 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2413 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2414 }
1942 2415 else if (SvTYPE (cb) == SVt_PVCV)
2416 {
2417 dSP;
2418 PUSHMARK (SP);
2419 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1943 PUTBACK; 2420 PUTBACK;
2421 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2422 }
1944 2423
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items); 2424 SvREFCNT_dec (cb);
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 { 2425 }
1954 struct coro_transfer_args ta; 2426}
1955 2427
1956 slf_frame.prepare (aTHX_ &ta); 2428static void
1957 TRANSFER (ta, 0); 2429coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2430{
2431 /* call $sem->adjust (0) to possibly wake up some other waiters */
2432 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2433}
1958 2434
1959 checkmark = PL_stack_sp - PL_stack_base; 2435static int
2436slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2437{
2438 AV *av = (AV *)frame->data;
2439 SV *count_sv = AvARRAY (av)[0];
2440
2441 /* if we are about to throw, don't actually acquire the lock, just throw */
2442 if (CORO_THROW)
2443 return 0;
2444 else if (SvIVX (count_sv) > 0)
1960 } 2445 {
1961 while (slf_frame.check (aTHX_ &slf_frame)); 2446 SvSTATE_current->on_destroy = 0;
1962 2447
2448 if (acquire)
2449 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2450 else
2451 coro_semaphore_adjust (aTHX_ av, 0);
2452
2453 return 0;
2454 }
2455 else
2456 {
2457 int i;
2458 /* if we were woken up but can't down, we look through the whole */
2459 /* waiters list and only add us if we aren't in there already */
2460 /* this avoids some degenerate memory usage cases */
2461
2462 for (i = 1; i <= AvFILLp (av); ++i)
2463 if (AvARRAY (av)[i] == SvRV (coro_current))
2464 return 1;
2465
2466 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2467 return 1;
2468 }
2469}
2470
2471static int
2472slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2473{
2474 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2475}
2476
2477static int
2478slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2479{
2480 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2481}
2482
2483static void
2484slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2485{
2486 AV *av = (AV *)SvRV (arg [0]);
2487
2488 if (SvIVX (AvARRAY (av)[0]) > 0)
2489 {
2490 frame->data = (void *)av;
2491 frame->prepare = prepare_nop;
2492 }
2493 else
2494 {
2495 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2496
2497 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2498 frame->prepare = prepare_schedule;
2499
2500 /* to avoid race conditions when a woken-up coro gets terminated */
2501 /* we arrange for a temporary on_destroy that calls adjust (0) */
2502 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2503 }
2504}
2505
2506static void
2507slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2510 frame->check = slf_check_semaphore_down;
2511}
2512
2513static void
2514slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2515{
2516 if (items >= 2)
2517 {
2518 /* callback form */
2519 AV *av = (AV *)SvRV (arg [0]);
2520 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2521
2522 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2523
2524 if (SvIVX (AvARRAY (av)[0]) > 0)
2525 coro_semaphore_adjust (aTHX_ av, 0);
2526
2527 frame->prepare = prepare_nop;
2528 frame->check = slf_check_nop;
2529 }
2530 else
2531 {
2532 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2533 frame->check = slf_check_semaphore_wait;
2534 }
2535}
2536
2537/* signal */
2538
2539static void
2540coro_signal_wake (pTHX_ AV *av, int count)
2541{
2542 SvIVX (AvARRAY (av)[0]) = 0;
2543
2544 /* now signal count waiters */
2545 while (count > 0 && AvFILLp (av) > 0)
2546 {
2547 SV *cb;
2548
2549 /* swap first two elements so we can shift a waiter */
2550 cb = AvARRAY (av)[0];
2551 AvARRAY (av)[0] = AvARRAY (av)[1];
2552 AvARRAY (av)[1] = cb;
2553
2554 cb = av_shift (av);
2555
2556 api_ready (aTHX_ cb);
2557 sv_setiv (cb, 0); /* signal waiter */
2558 SvREFCNT_dec (cb);
2559
2560 --count;
2561 }
2562}
2563
2564static int
2565slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2566{
2567 /* if we are about to throw, also stop waiting */
2568 return SvROK ((SV *)frame->data) && !CORO_THROW;
2569}
2570
2571static void
2572slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 AV *av = (AV *)SvRV (arg [0]);
2575
2576 if (SvIVX (AvARRAY (av)[0]))
2577 {
2578 SvIVX (AvARRAY (av)[0]) = 0;
2579 frame->prepare = prepare_nop;
2580 frame->check = slf_check_nop;
2581 }
2582 else
2583 {
2584 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2585
2586 av_push (av, waiter);
2587
2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2589 frame->prepare = prepare_schedule;
2590 frame->check = slf_check_signal_wait;
2591 }
2592}
2593
2594/*****************************************************************************/
2595/* Coro::AIO */
2596
2597#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2598
2599/* helper storage struct */
2600struct io_state
2601{
2602 int errorno;
2603 I32 laststype; /* U16 in 5.10.0 */
2604 int laststatval;
2605 Stat_t statcache;
2606};
2607
2608static void
2609coro_aio_callback (pTHX_ CV *cv)
2610{
2611 dXSARGS;
2612 AV *state = (AV *)GENSUB_ARG;
2613 SV *coro = av_pop (state);
2614 SV *data_sv = newSV (sizeof (struct io_state));
2615
2616 av_extend (state, items - 1);
2617
2618 sv_upgrade (data_sv, SVt_PV);
2619 SvCUR_set (data_sv, sizeof (struct io_state));
2620 SvPOK_only (data_sv);
2621
2622 {
2623 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2624
2625 data->errorno = errno;
2626 data->laststype = PL_laststype;
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629 }
2630
2631 /* now build the result vector out of all the parameters and the data_sv */
2632 {
2633 int i;
2634
2635 for (i = 0; i < items; ++i)
2636 av_push (state, SvREFCNT_inc_NN (ST (i)));
2637 }
2638
2639 av_push (state, data_sv);
2640
2641 api_ready (aTHX_ coro);
2642 SvREFCNT_dec (coro);
2643 SvREFCNT_dec ((AV *)state);
2644}
2645
2646static int
2647slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2648{
2649 AV *state = (AV *)frame->data;
2650
2651 /* if we are about to throw, return early */
2652 /* this does not cancel the aio request, but at least */
2653 /* it quickly returns */
2654 if (CORO_THROW)
2655 return 0;
2656
2657 /* one element that is an RV? repeat! */
2658 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2659 return 1;
2660
2661 /* restore status */
2662 {
2663 SV *data_sv = av_pop (state);
2664 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2665
2666 errno = data->errorno;
2667 PL_laststype = data->laststype;
2668 PL_laststatval = data->laststatval;
2669 PL_statcache = data->statcache;
2670
2671 SvREFCNT_dec (data_sv);
2672 }
2673
2674 /* push result values */
1963 { 2675 {
1964 dSP; 2676 dSP;
1965 SV **bot = PL_stack_base + checkmark; 2677 int i;
1966 int gimme = GIMME_V;
1967 2678
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2679 EXTEND (SP, AvFILLp (state) + 1);
1969 2680 for (i = 0; i <= AvFILLp (state); ++i)
1970 /* make sure we put something on the stack in scalar context */ 2681 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971 if (gimme == G_SCALAR)
1972 {
1973 if (sp == bot)
1974 XPUSHs (&PL_sv_undef);
1975
1976 SP = bot + 1;
1977 }
1978 2682
1979 PUTBACK; 2683 PUTBACK;
1980 } 2684 }
1981 2685
1982 return NORMAL; 2686 return 0;
1983} 2687}
1984 2688
1985static void 2689static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2690slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987{ 2691{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2692 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2693 SV *coro_hv = SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv (coro_hv);
1989 2695
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] 2696 /* put our coroutine id on the state arg */
1991 && PL_op->op_ppaddr != pp_slf) 2697 av_push (state, SvREFCNT_inc_NN (coro_hv));
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993 2698
1994 if (items > 3) 2699 /* first see whether we have a non-zero priority and set it as AIO prio */
1995 croak ("Coro only supports up to three arguments to SLF functions currently, caught"); 2700 if (coro->prio)
2701 {
2702 dSP;
1996 2703
1997 CvFLAGS (cv) |= CVf_SLF; 2704 static SV *prio_cv;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb; 2705 static SV *prio_sv;
1999 slf_cv = cv;
2000 2706
2001 /* we patch the op, and then re-run the whole call */ 2707 if (expect_false (!prio_cv))
2002 /* we have to put the same argument on the stack for this to work */ 2708 {
2003 /* and this will be done by pp_restore */ 2709 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004 slf_restore.op_next = (OP *)&slf_restore; 2710 prio_sv = newSViv (0);
2005 slf_restore.op_type = OP_NULL; 2711 }
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008 2712
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2713 PUSHMARK (SP);
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2714 sv_setiv (prio_sv, coro->prio);
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; 2715 XPUSHs (prio_sv);
2012 2716
2013 PL_op->op_ppaddr = pp_slf; 2717 PUTBACK;
2718 call_sv (prio_cv, G_VOID | G_DISCARD);
2719 }
2014 2720
2015 PL_op = (OP *)&slf_restore; 2721 /* now call the original request */
2722 {
2723 dSP;
2724 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2725 int i;
2726
2727 PUSHMARK (SP);
2728
2729 /* first push all args to the stack */
2730 EXTEND (SP, items + 1);
2731
2732 for (i = 0; i < items; ++i)
2733 PUSHs (arg [i]);
2734
2735 /* now push the callback closure */
2736 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2737
2738 /* now call the AIO function - we assume our request is uncancelable */
2739 PUTBACK;
2740 call_sv ((SV *)req, G_VOID | G_DISCARD);
2741 }
2742
2743 /* now that the requets is going, we loop toll we have a result */
2744 frame->data = (void *)state;
2745 frame->prepare = prepare_schedule;
2746 frame->check = slf_check_aio_req;
2016} 2747}
2748
2749static void
2750coro_aio_req_xs (pTHX_ CV *cv)
2751{
2752 dXSARGS;
2753
2754 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2755
2756 XSRETURN_EMPTY;
2757}
2758
2759/*****************************************************************************/
2760
2761#if CORO_CLONE
2762# include "clone.c"
2763#endif
2017 2764
2018MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2765MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019 2766
2020PROTOTYPES: DISABLE 2767PROTOTYPES: DISABLE
2021 2768
2022BOOT: 2769BOOT:
2023{ 2770{
2024#ifdef USE_ITHREADS 2771#ifdef USE_ITHREADS
2025 MUTEX_INIT (&coro_lock);
2026# if CORO_PTHREAD 2772# if CORO_PTHREAD
2027 coro_thx = PERL_GET_CONTEXT; 2773 coro_thx = PERL_GET_CONTEXT;
2028# endif 2774# endif
2029#endif 2775#endif
2030 BOOT_PAGESIZE; 2776 BOOT_PAGESIZE;
2777
2778 cctx_current = cctx_new_empty ();
2031 2779
2032 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2780 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2033 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2781 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2034 2782
2035 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2783 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2050 main_mainstack = PL_mainstack; 2798 main_mainstack = PL_mainstack;
2051 main_top_env = PL_top_env; 2799 main_top_env = PL_top_env;
2052 2800
2053 while (main_top_env->je_prev) 2801 while (main_top_env->je_prev)
2054 main_top_env = main_top_env->je_prev; 2802 main_top_env = main_top_env->je_prev;
2803
2804 {
2805 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2806
2807 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2808 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2809
2810 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2811 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2812 }
2055 2813
2056 coroapi.ver = CORO_API_VERSION; 2814 coroapi.ver = CORO_API_VERSION;
2057 coroapi.rev = CORO_API_REVISION; 2815 coroapi.rev = CORO_API_REVISION;
2058 2816
2059 coroapi.transfer = api_transfer; 2817 coroapi.transfer = api_transfer;
… …
2077 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2835 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2078} 2836}
2079 2837
2080SV * 2838SV *
2081new (char *klass, ...) 2839new (char *klass, ...)
2840 ALIAS:
2841 Coro::new = 1
2082 CODE: 2842 CODE:
2083{ 2843{
2084 struct coro *coro; 2844 struct coro *coro;
2085 MAGIC *mg; 2845 MAGIC *mg;
2086 HV *hv; 2846 HV *hv;
2847 CV *cb;
2087 int i; 2848 int i;
2849
2850 if (items > 1)
2851 {
2852 cb = coro_sv_2cv (aTHX_ ST (1));
2853
2854 if (!ix)
2855 {
2856 if (CvISXSUB (cb))
2857 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2858
2859 if (!CvROOT (cb))
2860 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2861 }
2862 }
2088 2863
2089 Newz (0, coro, 1, struct coro); 2864 Newz (0, coro, 1, struct coro);
2090 coro->args = newAV (); 2865 coro->args = newAV ();
2091 coro->flags = CF_NEW; 2866 coro->flags = CF_NEW;
2092 2867
… …
2097 coro->hv = hv = newHV (); 2872 coro->hv = hv = newHV ();
2098 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2099 mg->mg_flags |= MGf_DUP; 2874 mg->mg_flags |= MGf_DUP;
2100 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2101 2876
2877 if (items > 1)
2878 {
2102 av_extend (coro->args, items - 1); 2879 av_extend (coro->args, items - 1 + ix - 1);
2880
2881 if (ix)
2882 {
2883 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2884 cb = cv_coro_run;
2885 }
2886
2887 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2888
2103 for (i = 1; i < items; i++) 2889 for (i = 2; i < items; i++)
2104 av_push (coro->args, newSVsv (ST (i))); 2890 av_push (coro->args, newSVsv (ST (i)));
2891 }
2105} 2892}
2106 OUTPUT: 2893 OUTPUT:
2107 RETVAL 2894 RETVAL
2108 2895
2109void 2896void
2110_set_stacklevel (...) 2897transfer (...)
2898 PROTOTYPE: $$
2111 CODE: 2899 CODE:
2112 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 2900 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2113
2114void
2115transfer (...)
2116 CODE:
2117 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2118 2901
2119bool 2902bool
2120_destroy (SV *coro_sv) 2903_destroy (SV *coro_sv)
2121 CODE: 2904 CODE:
2122 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2905 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2127_exit (int code) 2910_exit (int code)
2128 PROTOTYPE: $ 2911 PROTOTYPE: $
2129 CODE: 2912 CODE:
2130 _exit (code); 2913 _exit (code);
2131 2914
2915SV *
2916clone (Coro::State coro)
2917 CODE:
2918{
2919#if CORO_CLONE
2920 struct coro *ncoro = coro_clone (coro);
2921 MAGIC *mg;
2922 /* TODO: too much duplication */
2923 ncoro->hv = newHV ();
2924 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2925 mg->mg_flags |= MGf_DUP;
2926 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2927#else
2928 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2929#endif
2930}
2931 OUTPUT:
2932 RETVAL
2933
2132int 2934int
2133cctx_stacksize (int new_stacksize = 0) 2935cctx_stacksize (int new_stacksize = 0)
2936 PROTOTYPE: ;$
2134 CODE: 2937 CODE:
2135 RETVAL = cctx_stacksize; 2938 RETVAL = cctx_stacksize;
2136 if (new_stacksize) 2939 if (new_stacksize)
2137 { 2940 {
2138 cctx_stacksize = new_stacksize; 2941 cctx_stacksize = new_stacksize;
… …
2141 OUTPUT: 2944 OUTPUT:
2142 RETVAL 2945 RETVAL
2143 2946
2144int 2947int
2145cctx_max_idle (int max_idle = 0) 2948cctx_max_idle (int max_idle = 0)
2949 PROTOTYPE: ;$
2146 CODE: 2950 CODE:
2147 RETVAL = cctx_max_idle; 2951 RETVAL = cctx_max_idle;
2148 if (max_idle > 1) 2952 if (max_idle > 1)
2149 cctx_max_idle = max_idle; 2953 cctx_max_idle = max_idle;
2150 OUTPUT: 2954 OUTPUT:
2151 RETVAL 2955 RETVAL
2152 2956
2153int 2957int
2154cctx_count () 2958cctx_count ()
2959 PROTOTYPE:
2155 CODE: 2960 CODE:
2156 RETVAL = cctx_count; 2961 RETVAL = cctx_count;
2157 OUTPUT: 2962 OUTPUT:
2158 RETVAL 2963 RETVAL
2159 2964
2160int 2965int
2161cctx_idle () 2966cctx_idle ()
2967 PROTOTYPE:
2162 CODE: 2968 CODE:
2163 RETVAL = cctx_idle; 2969 RETVAL = cctx_idle;
2164 OUTPUT: 2970 OUTPUT:
2165 RETVAL 2971 RETVAL
2166 2972
2167void 2973void
2168list () 2974list ()
2975 PROTOTYPE:
2169 PPCODE: 2976 PPCODE:
2170{ 2977{
2171 struct coro *coro; 2978 struct coro *coro;
2172 for (coro = coro_first; coro; coro = coro->next) 2979 for (coro = coro_first; coro; coro = coro->next)
2173 if (coro->hv) 2980 if (coro->hv)
… …
2235 3042
2236void 3043void
2237throw (Coro::State self, SV *throw = &PL_sv_undef) 3044throw (Coro::State self, SV *throw = &PL_sv_undef)
2238 PROTOTYPE: $;$ 3045 PROTOTYPE: $;$
2239 CODE: 3046 CODE:
3047{
3048 struct coro *current = SvSTATE_current;
3049 SV **throwp = self == current ? &CORO_THROW : &self->except;
2240 SvREFCNT_dec (self->throw); 3050 SvREFCNT_dec (*throwp);
2241 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3051 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3052}
2242 3053
2243void 3054void
2244api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3055api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3056 PROTOTYPE: $;$
2245 C_ARGS: aTHX_ coro, flags 3057 C_ARGS: aTHX_ coro, flags
2246 3058
2247SV * 3059SV *
2248has_cctx (Coro::State coro) 3060has_cctx (Coro::State coro)
2249 PROTOTYPE: $ 3061 PROTOTYPE: $
2250 CODE: 3062 CODE:
2251 RETVAL = boolSV (!!coro->cctx); 3063 /* maybe manage the running flag differently */
3064 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2252 OUTPUT: 3065 OUTPUT:
2253 RETVAL 3066 RETVAL
2254 3067
2255int 3068int
2256is_traced (Coro::State coro) 3069is_traced (Coro::State coro)
… …
2274 OUTPUT: 3087 OUTPUT:
2275 RETVAL 3088 RETVAL
2276 3089
2277void 3090void
2278force_cctx () 3091force_cctx ()
3092 PROTOTYPE:
2279 CODE: 3093 CODE:
2280 struct coro *coro = SvSTATE (coro_current);
2281 coro->cctx->idle_sp = 0; 3094 cctx_current->idle_sp = 0;
2282 3095
2283void 3096void
2284swap_defsv (Coro::State self) 3097swap_defsv (Coro::State self)
2285 PROTOTYPE: $ 3098 PROTOTYPE: $
2286 ALIAS: 3099 ALIAS:
… …
2294 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3107 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295 3108
2296 SV *tmp = *src; *src = *dst; *dst = tmp; 3109 SV *tmp = *src; *src = *dst; *dst = tmp;
2297 } 3110 }
2298 3111
3112
2299MODULE = Coro::State PACKAGE = Coro 3113MODULE = Coro::State PACKAGE = Coro
2300 3114
2301BOOT: 3115BOOT:
2302{ 3116{
2303 int i; 3117 int i;
2304 3118
2305 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2306 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3119 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2307 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3120 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2308 3121 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3122 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2309 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3123 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2310 SvREADONLY_on (coro_current); 3124 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3125 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3126 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3127 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3128
3129 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3130 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3131 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3132 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2311 3133
2312 coro_stash = gv_stashpv ("Coro", TRUE); 3134 coro_stash = gv_stashpv ("Coro", TRUE);
2313 3135
2314 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2315 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2323 3145
2324 { 3146 {
2325 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3147 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2326 3148
2327 coroapi.schedule = api_schedule; 3149 coroapi.schedule = api_schedule;
3150 coroapi.schedule_to = api_schedule_to;
2328 coroapi.cede = api_cede; 3151 coroapi.cede = api_cede;
2329 coroapi.cede_notself = api_cede_notself; 3152 coroapi.cede_notself = api_cede_notself;
2330 coroapi.ready = api_ready; 3153 coroapi.ready = api_ready;
2331 coroapi.is_ready = api_is_ready; 3154 coroapi.is_ready = api_is_ready;
2332 coroapi.nready = coro_nready; 3155 coroapi.nready = coro_nready;
2333 coroapi.current = coro_current; 3156 coroapi.current = coro_current;
2334 3157
2335 GCoroAPI = &coroapi; 3158 /*GCoroAPI = &coroapi;*/
2336 sv_setiv (sv, (IV)&coroapi); 3159 sv_setiv (sv, (IV)&coroapi);
2337 SvREADONLY_on (sv); 3160 SvREADONLY_on (sv);
2338 } 3161 }
2339} 3162}
2340 3163
2341void 3164void
3165terminate (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3168
3169void
2342schedule (...) 3170schedule (...)
2343 CODE: 3171 CODE:
2344 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 3172 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3173
3174void
3175schedule_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3178
3179void
3180cede_to (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2345 3183
2346void 3184void
2347cede (...) 3185cede (...)
2348 CODE: 3186 CODE:
2349 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3187 CORO_EXECUTE_SLF_XS (slf_init_cede);
2350 3188
2351void 3189void
2352cede_notself (...) 3190cede_notself (...)
2353 CODE: 3191 CODE:
2354 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3192 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3193
3194void
3195_cancel (Coro::State self)
3196 CODE:
3197 coro_state_destroy (aTHX_ self);
3198 coro_call_on_destroy (aTHX_ self);
2355 3199
2356void 3200void
2357_set_current (SV *current) 3201_set_current (SV *current)
2358 PROTOTYPE: $ 3202 PROTOTYPE: $
2359 CODE: 3203 CODE:
… …
2362 3206
2363void 3207void
2364_set_readyhook (SV *hook) 3208_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3209 PROTOTYPE: $
2366 CODE: 3210 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3211 SvREFCNT_dec (coro_readyhook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3212 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 3213
2372int 3214int
2373prio (Coro::State coro, int newprio = 0) 3215prio (Coro::State coro, int newprio = 0)
3216 PROTOTYPE: $;$
2374 ALIAS: 3217 ALIAS:
2375 nice = 1 3218 nice = 1
2376 CODE: 3219 CODE:
2377{ 3220{
2378 RETVAL = coro->prio; 3221 RETVAL = coro->prio;
… …
2405 CODE: 3248 CODE:
2406 RETVAL = coro_nready; 3249 RETVAL = coro_nready;
2407 OUTPUT: 3250 OUTPUT:
2408 RETVAL 3251 RETVAL
2409 3252
2410# for async_pool speedup
2411void 3253void
2412_pool_1 (SV *cb) 3254_pool_handler (...)
2413 CODE: 3255 CODE:
2414{ 3256 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 3257
2422 if (!invoke) 3258void
3259async_pool (SV *cv, ...)
3260 PROTOTYPE: &@
3261 PPCODE:
3262{
3263 HV *hv = (HV *)av_pop (av_async_pool);
3264 AV *av = newAV ();
3265 SV *cb = ST (0);
3266 int i;
3267
3268 av_extend (av, items - 2);
3269 for (i = 1; i < items; ++i)
3270 av_push (av, SvREFCNT_inc_NN (ST (i)));
3271
3272 if ((SV *)hv == &PL_sv_undef)
2423 { 3273 {
2424 SV *old = PL_diehook; 3274 PUSHMARK (SP);
2425 PL_diehook = 0; 3275 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3276 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3277 PUSHs ((SV *)cv_pool_handler);
3278 PUTBACK;
3279 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3280 SPAGAIN;
3281
3282 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3283 }
2429 3284
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 { 3285 {
2443 av_fill (defav, len - 1); 3286 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3287
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3288 assert (!coro->invoke_cb);
3289 assert (!coro->invoke_av);
3290 coro->invoke_cb = SvREFCNT_inc (cb);
3291 coro->invoke_av = av;
2446 } 3292 }
2447 3293
3294 api_ready (aTHX_ (SV *)hv);
3295
3296 if (GIMME_V != G_VOID)
3297 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3298 else
2448 SvREFCNT_dec (invoke); 3299 SvREFCNT_dec (hv);
2449} 3300}
2450 3301
2451void 3302SV *
2452_pool_2 (SV *cb) 3303rouse_cb ()
3304 PROTOTYPE:
2453 CODE: 3305 CODE:
2454{ 3306 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: 3307 OUTPUT:
2527 RETVAL 3308 RETVAL
2528 3309
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3310void
2535_get_state (SV *self) 3311rouse_wait (...)
3312 PROTOTYPE: ;$
2536 PPCODE: 3313 PPCODE:
2537{ 3314 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 3315
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550 3316
2551 av_extend (av, AvFILLp (defav) + 1 + 1); 3317MODULE = Coro::State PACKAGE = PerlIO::cede
2552 3318
2553 for (i = 0; i <= AvFILLp (defav); ++i) 3319BOOT:
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3320 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555 3321
2556 av_push (av, data_sv);
2557 3322
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3323MODULE = Coro::State PACKAGE = Coro::Semaphore
2559 3324
2560 api_ready (aTHX_ self); 3325SV *
2561} 3326new (SV *klass, SV *count = 0)
3327 CODE:
3328 RETVAL = sv_bless (
3329 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3330 GvSTASH (CvGV (cv))
3331 );
3332 OUTPUT:
3333 RETVAL
3334
3335# helper for Coro::Channel
3336SV *
3337_alloc (int count)
3338 CODE:
3339 RETVAL = coro_waitarray_new (aTHX_ count);
3340 OUTPUT:
3341 RETVAL
3342
3343SV *
3344count (SV *self)
3345 CODE:
3346 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3347 OUTPUT:
3348 RETVAL
2562 3349
2563void 3350void
2564_set_state (SV *state) 3351up (SV *self, int adjust = 1)
2565 PROTOTYPE: $ 3352 ALIAS:
3353 adjust = 1
3354 CODE:
3355 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3356
3357void
3358down (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3361
3362void
3363wait (...)
3364 CODE:
3365 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3366
3367void
3368try (SV *self)
3369 PPCODE:
3370{
3371 AV *av = (AV *)SvRV (self);
3372 SV *count_sv = AvARRAY (av)[0];
3373 IV count = SvIVX (count_sv);
3374
3375 if (count > 0)
3376 {
3377 --count;
3378 SvIVX (count_sv) = count;
3379 XSRETURN_YES;
3380 }
3381 else
3382 XSRETURN_NO;
3383}
3384
3385void
3386waiters (SV *self)
3387 PPCODE:
3388{
3389 AV *av = (AV *)SvRV (self);
3390 int wcount = AvFILLp (av) + 1 - 1;
3391
3392 if (GIMME_V == G_SCALAR)
3393 XPUSHs (sv_2mortal (newSViv (wcount)));
3394 else
3395 {
3396 int i;
3397 EXTEND (SP, wcount);
3398 for (i = 1; i <= wcount; ++i)
3399 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3400 }
3401}
3402
3403MODULE = Coro::State PACKAGE = Coro::Signal
3404
3405SV *
3406new (SV *klass)
2566 PPCODE: 3407 CODE:
3408 RETVAL = sv_bless (
3409 coro_waitarray_new (aTHX_ 0),
3410 GvSTASH (CvGV (cv))
3411 );
3412 OUTPUT:
3413 RETVAL
3414
3415void
3416wait (...)
3417 CODE:
3418 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3419
3420void
3421broadcast (SV *self)
3422 CODE:
2567{ 3423{
2568 AV *av = (AV *)SvRV (state); 3424 AV *av = (AV *)SvRV (self);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3425 coro_signal_wake (aTHX_ av, AvFILLp (av));
2570 int i; 3426}
2571 3427
2572 errno = data->errorno; 3428void
2573 PL_laststype = data->laststype; 3429send (SV *self)
2574 PL_laststatval = data->laststatval; 3430 CODE:
2575 PL_statcache = data->statcache; 3431{
3432 AV *av = (AV *)SvRV (self);
2576 3433
2577 EXTEND (SP, AvFILLp (av)); 3434 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3435 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3436 else
3437 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3438}
3439
3440IV
3441awaited (SV *self)
3442 CODE:
3443 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3444 OUTPUT:
3445 RETVAL
2581 3446
2582 3447
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3448MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3449
2585BOOT: 3450BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3451 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3452
2588SV * 3453void
2589_schedule (...) 3454_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3455 CODE:
2592{ 3456{
2593 static int incede; 3457 static int incede;
2594 3458
2595 api_cede_notself (aTHX); 3459 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3465 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3466 if (coro_nready >= incede)
2603 { 3467 {
2604 PUSHMARK (SP); 3468 PUSHMARK (SP);
2605 PUTBACK; 3469 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3470 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3471 }
2609 3472
2610 --incede; 3473 --incede;
2611} 3474}
2612 3475
2613 3476
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3477MODULE = Coro::State PACKAGE = Coro::AIO
2615 3478
2616BOOT: 3479void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3480_register (char *target, char *proto, SV *req)
3481 CODE:
3482{
3483 CV *req_cv = coro_sv_2cv (aTHX_ req);
3484 /* newXSproto doesn't return the CV on 5.8 */
3485 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3486 sv_setpv ((SV *)slf_cv, proto);
3487 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3488}
2618 3489

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