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Comparing Coro/Coro/State.xs (file contents):
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC vs.
Revision 1.328 by root, Tue Nov 25 09:49:43 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
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}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 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 = (void *)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 == (void *)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 /*AvARRAY (av) = ary;*/
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2377 AvMAX (av) = 1;
2378 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count);
1836 2380
1837 EXTEND (SP, 3); 2381 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} 2382}
1845 2383
1846static void 2384/* 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 2385
1852static void 2386static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2387coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2388{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2389 SV *count_sv = AvARRAY (av)[0];
2390 IV count = SvIVX (count_sv);
1856 2391
1857 frame->prepare = slf_prepare_set_stacklevel; 2392 count += adjust;
1858 frame->check = slf_check_nop; 2393 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2394
1862static void 2395 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2396 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (aTHX_ 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 { 2397 {
1921 /* first iteration */ 2398 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 2399
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2400 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2401 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2402 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2403 cb = av_shift (av);
1931 2404
1932 /* pop args */ 2405 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2406 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2407 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2408 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2409 }
1942 2410 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2411 {
1973 if (sp == bot) 2412 dSP;
1974 XPUSHs (&PL_sv_undef); 2413 PUSHMARK (SP);
1975 2414 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2415 PUTBACK;
2416 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2417 }
1978 2418
1979 PUTBACK; 2419 SvREFCNT_dec (cb);
1980 } 2420 }
1981
1982 return NORMAL;
1983} 2421}
1984 2422
1985static void 2423static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2424coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2425{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2426 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2428}
2017
2018/*****************************************************************************/
2019 2429
2020static int 2430static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2432{
2023 AV *av = (AV *)frame->data; 2433 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2434 SV *count_sv = AvARRAY (av)[0];
2025 2435
2436 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW)
2438 return 0;
2026 if (SvIVX (count_sv) > 0) 2439 else if (SvIVX (count_sv) > 0)
2027 { 2440 {
2441 SvSTATE_current->on_destroy = 0;
2442
2443 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2444 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else
2446 coro_semaphore_adjust (aTHX_ av, 0);
2447
2029 return 0; 2448 return 0;
2030 } 2449 }
2031 else 2450 else
2032 { 2451 {
2033 int i; 2452 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2461 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2462 return 1;
2044 } 2463 }
2045} 2464}
2046 2465
2047static void 2466static int
2467slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2468{
2469 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2470}
2471
2472static int
2473slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2474{
2475 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2476}
2477
2478static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2479slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2480{
2050 AV *av = (AV *)SvRV (arg [0]); 2481 AV *av = (AV *)SvRV (arg [0]);
2051 2482
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2483 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2484 {
… …
2058 { 2489 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2490 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2491
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2493 frame->prepare = prepare_schedule;
2063 }
2064 2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2498 }
2499}
2500
2501static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2505 frame->check = slf_check_semaphore_down;
2066
2067} 2506}
2507
2508static void
2509slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 if (items >= 2)
2512 {
2513 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2516
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2518
2519 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0);
2521
2522 frame->prepare = prepare_nop;
2523 frame->check = slf_check_nop;
2524 }
2525 else
2526 {
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_wait;
2529 }
2530}
2531
2532/* signal */
2533
2534static void
2535coro_signal_wake (pTHX_ AV *av, int count)
2536{
2537 SvIVX (AvARRAY (av)[0]) = 0;
2538
2539 /* now signal count waiters */
2540 while (count > 0 && AvFILLp (av) > 0)
2541 {
2542 SV *cb;
2543
2544 /* swap first two elements so we can shift a waiter */
2545 cb = AvARRAY (av)[0];
2546 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb;
2548
2549 cb = av_shift (av);
2550
2551 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */
2553 SvREFCNT_dec (cb);
2554
2555 --count;
2556 }
2557}
2558
2559static int
2560slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2561{
2562 /* if we are about to throw, also stop waiting */
2563 return SvROK ((SV *)frame->data) && !CORO_THROW;
2564}
2565
2566static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{
2569 AV *av = (AV *)SvRV (arg [0]);
2570
2571 if (SvIVX (AvARRAY (av)[0]))
2572 {
2573 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop;
2576 }
2577 else
2578 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2580
2581 av_push (av, waiter);
2582
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule;
2585 frame->check = slf_check_signal_wait;
2586 }
2587}
2588
2589/*****************************************************************************/
2590/* Coro::AIO */
2591
2592#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2593
2594/* helper storage struct */
2595struct io_state
2596{
2597 int errorno;
2598 I32 laststype; /* U16 in 5.10.0 */
2599 int laststatval;
2600 Stat_t statcache;
2601};
2602
2603static void
2604coro_aio_callback (pTHX_ CV *cv)
2605{
2606 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG;
2608 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state));
2610
2611 av_extend (state, items - 1);
2612
2613 sv_upgrade (data_sv, SVt_PV);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616
2617 {
2618 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2619
2620 data->errorno = errno;
2621 data->laststype = PL_laststype;
2622 data->laststatval = PL_laststatval;
2623 data->statcache = PL_statcache;
2624 }
2625
2626 /* now build the result vector out of all the parameters and the data_sv */
2627 {
2628 int i;
2629
2630 for (i = 0; i < items; ++i)
2631 av_push (state, SvREFCNT_inc_NN (ST (i)));
2632 }
2633
2634 av_push (state, data_sv);
2635
2636 api_ready (aTHX_ coro);
2637 SvREFCNT_dec (coro);
2638 SvREFCNT_dec ((AV *)state);
2639}
2640
2641static int
2642slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2643{
2644 AV *state = (AV *)frame->data;
2645
2646 /* if we are about to throw, return early */
2647 /* this does not cancel the aio request, but at least */
2648 /* it quickly returns */
2649 if (CORO_THROW)
2650 return 0;
2651
2652 /* one element that is an RV? repeat! */
2653 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2654 return 1;
2655
2656 /* restore status */
2657 {
2658 SV *data_sv = av_pop (state);
2659 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2660
2661 errno = data->errorno;
2662 PL_laststype = data->laststype;
2663 PL_laststatval = data->laststatval;
2664 PL_statcache = data->statcache;
2665
2666 SvREFCNT_dec (data_sv);
2667 }
2668
2669 /* push result values */
2670 {
2671 dSP;
2672 int i;
2673
2674 EXTEND (SP, AvFILLp (state) + 1);
2675 for (i = 0; i <= AvFILLp (state); ++i)
2676 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2677
2678 PUTBACK;
2679 }
2680
2681 return 0;
2682}
2683
2684static void
2685slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2688 SV *coro_hv = SvRV (coro_current);
2689 struct coro *coro = SvSTATE_hv (coro_hv);
2690
2691 /* put our coroutine id on the state arg */
2692 av_push (state, SvREFCNT_inc_NN (coro_hv));
2693
2694 /* first see whether we have a non-zero priority and set it as AIO prio */
2695 if (coro->prio)
2696 {
2697 dSP;
2698
2699 static SV *prio_cv;
2700 static SV *prio_sv;
2701
2702 if (expect_false (!prio_cv))
2703 {
2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2705 prio_sv = newSViv (0);
2706 }
2707
2708 PUSHMARK (SP);
2709 sv_setiv (prio_sv, coro->prio);
2710 XPUSHs (prio_sv);
2711
2712 PUTBACK;
2713 call_sv (prio_cv, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now call the original request */
2717 {
2718 dSP;
2719 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2720 int i;
2721
2722 PUSHMARK (SP);
2723
2724 /* first push all args to the stack */
2725 EXTEND (SP, items + 1);
2726
2727 for (i = 0; i < items; ++i)
2728 PUSHs (arg [i]);
2729
2730 /* now push the callback closure */
2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2732
2733 /* now call the AIO function - we assume our request is uncancelable */
2734 PUTBACK;
2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
2736 }
2737
2738 /* now that the requets is going, we loop toll we have a result */
2739 frame->data = (void *)state;
2740 frame->prepare = prepare_schedule;
2741 frame->check = slf_check_aio_req;
2742}
2743
2744static void
2745coro_aio_req_xs (pTHX_ CV *cv)
2746{
2747 dXSARGS;
2748
2749 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2750
2751 XSRETURN_EMPTY;
2752}
2753
2754/*****************************************************************************/
2755
2756#if CORO_CLONE
2757# include "clone.c"
2758#endif
2068 2759
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2761
2071PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
2072 2763
2073BOOT: 2764BOOT:
2074{ 2765{
2075#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2767# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2768 coro_thx = PERL_GET_CONTEXT;
2079# endif 2769# endif
2080#endif 2770#endif
2081 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
2772
2773 cctx_current = cctx_new_empty ();
2082 2774
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 2777
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2778 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 2793 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2794 main_top_env = PL_top_env;
2103 2795
2104 while (main_top_env->je_prev) 2796 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2797 main_top_env = main_top_env->je_prev;
2798
2799 {
2800 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2801
2802 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2803 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2804
2805 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2806 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2807 }
2106 2808
2107 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2810 coroapi.rev = CORO_API_REVISION;
2109 2811
2110 coroapi.transfer = api_transfer; 2812 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2831}
2130 2832
2131SV * 2833SV *
2132new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
2133 CODE: 2837 CODE:
2134{ 2838{
2135 struct coro *coro; 2839 struct coro *coro;
2136 MAGIC *mg; 2840 MAGIC *mg;
2137 HV *hv; 2841 HV *hv;
2842 CV *cb;
2138 int i; 2843 int i;
2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
2139 2858
2140 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2860 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
2143 2862
… …
2148 coro->hv = hv = newHV (); 2867 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2869 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2871
2872 if (items > 1)
2873 {
2153 av_extend (coro->args, items - 1); 2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
2154 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
2156} 2887}
2157 OUTPUT: 2888 OUTPUT:
2158 RETVAL 2889 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2890
2165void 2891void
2166transfer (...) 2892transfer (...)
2167 PROTOTYPE: $$ 2893 PROTOTYPE: $$
2168 CODE: 2894 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2895 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2896
2171bool 2897bool
2172_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
2173 CODE: 2899 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 2904void
2179_exit (int code) 2905_exit (int code)
2180 PROTOTYPE: $ 2906 PROTOTYPE: $
2181 CODE: 2907 CODE:
2182 _exit (code); 2908 _exit (code);
2909
2910SV *
2911clone (Coro::State coro)
2912 CODE:
2913{
2914#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro);
2916 MAGIC *mg;
2917 /* TODO: too much duplication */
2918 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP;
2921 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2922#else
2923 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2924#endif
2925}
2926 OUTPUT:
2927 RETVAL
2183 2928
2184int 2929int
2185cctx_stacksize (int new_stacksize = 0) 2930cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 2931 PROTOTYPE: ;$
2187 CODE: 2932 CODE:
… …
2292 3037
2293void 3038void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3039throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3040 PROTOTYPE: $;$
2296 CODE: 3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3045 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
2299 3048
2300void 3049void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3051 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3052 C_ARGS: aTHX_ coro, flags
2304 3053
2305SV * 3054SV *
2306has_cctx (Coro::State coro) 3055has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3056 PROTOTYPE: $
2308 CODE: 3057 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3060 OUTPUT:
2311 RETVAL 3061 RETVAL
2312 3062
2313int 3063int
2314is_traced (Coro::State coro) 3064is_traced (Coro::State coro)
… …
2334 3084
2335void 3085void
2336force_cctx () 3086force_cctx ()
2337 PROTOTYPE: 3087 PROTOTYPE:
2338 CODE: 3088 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3089 cctx_current->idle_sp = 0;
2341 3090
2342void 3091void
2343swap_defsv (Coro::State self) 3092swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3093 PROTOTYPE: $
2345 ALIAS: 3094 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3103
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3104 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3105 }
2357 3106
3107
2358MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
2359 3109
2360BOOT: 3110BOOT:
2361{ 3111{
2362 int i; 3112 int i;
2363 3113
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3123
3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3128
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3130
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2382 3140
2383 { 3141 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3143
2386 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
3145 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3150 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
2393 3152
2394 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
2397 } 3156 }
2398} 3157}
2399 3158
2400void 3159void
3160terminate (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163
3164void
2401schedule (...) 3165schedule (...)
2402 CODE: 3166 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3167 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168
3169void
3170schedule_to (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3173
3174void
3175cede_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3178
2405void 3179void
2406cede (...) 3180cede (...)
2407 CODE: 3181 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3182 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3183
2410void 3184void
2411cede_notself (...) 3185cede_notself (...)
2412 CODE: 3186 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
2414 3194
2415void 3195void
2416_set_current (SV *current) 3196_set_current (SV *current)
2417 PROTOTYPE: $ 3197 PROTOTYPE: $
2418 CODE: 3198 CODE:
… …
2421 3201
2422void 3202void
2423_set_readyhook (SV *hook) 3203_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3204 PROTOTYPE: $
2425 CODE: 3205 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3206 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3208
2431int 3209int
2432prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3211 PROTOTYPE: $;$
2434 ALIAS: 3212 ALIAS:
… …
2465 CODE: 3243 CODE:
2466 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
2467 OUTPUT: 3245 OUTPUT:
2468 RETVAL 3246 RETVAL
2469 3247
2470# for async_pool speedup
2471void 3248void
2472_pool_1 (SV *cb) 3249_pool_handler (...)
2473 CODE: 3250 CODE:
2474{ 3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3252
2482 if (!invoke) 3253void
3254async_pool (SV *cv, ...)
3255 PROTOTYPE: &@
3256 PPCODE:
3257{
3258 HV *hv = (HV *)av_pop (av_async_pool);
3259 AV *av = newAV ();
3260 SV *cb = ST (0);
3261 int i;
3262
3263 av_extend (av, items - 2);
3264 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i)));
3266
3267 if ((SV *)hv == &PL_sv_undef)
2483 { 3268 {
2484 SV *old = PL_diehook; 3269 PUSHMARK (SP);
2485 PL_diehook = 0; 3270 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3271 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3278 }
2489 3279
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3280 {
2503 av_fill (defav, len - 1); 3281 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3282
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3283 assert (!coro->invoke_cb);
3284 assert (!coro->invoke_av);
3285 coro->invoke_cb = SvREFCNT_inc (cb);
3286 coro->invoke_av = av;
2506 } 3287 }
2507}
2508 3288
2509void 3289 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
3294 SvREFCNT_dec (hv);
3295}
3296
3297SV *
3298rouse_cb ()
3299 PROTOTYPE:
2511 CODE: 3300 CODE:
2512{ 3301 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3302 OUTPUT:
2585 RETVAL 3303 RETVAL
2586 3304
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3305void
2593_get_state (SV *self) 3306rouse_wait (...)
2594 PROTOTYPE: $ 3307 PROTOTYPE: ;$
2595 PPCODE: 3308 PPCODE:
2596{ 3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621
2622void
2623_set_state (SV *state)
2624 PROTOTYPE: $
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE:
2650{
2651 static int incede;
2652
2653 api_cede_notself (aTHX);
2654
2655 ++incede;
2656 while (coro_nready >= incede && api_cede (aTHX))
2657 ;
2658
2659 sv_setsv (sv_activity, &PL_sv_undef);
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667
2668 --incede;
2669}
2670 3310
2671 3311
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3312MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3313
2674BOOT: 3314BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3316
3317
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3318MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3319
2679SV * 3320SV *
2680new (SV *klass, SV *count_ = 0) 3321new (SV *klass, SV *count = 0)
2681 CODE: 3322 CODE:
2682{ 3323 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3325 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3326 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3327 OUTPUT:
2687} 3328 RETVAL
3329
3330# helper for Coro::Channel
3331SV *
3332_alloc (int count)
3333 CODE:
3334 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3335 OUTPUT:
2689 RETVAL 3336 RETVAL
2690 3337
2691SV * 3338SV *
2692count (SV *self) 3339count (SV *self)
… …
2698void 3345void
2699up (SV *self, int adjust = 1) 3346up (SV *self, int adjust = 1)
2700 ALIAS: 3347 ALIAS:
2701 adjust = 1 3348 adjust = 1
2702 CODE: 3349 CODE:
2703{ 3350 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (aTHX_ cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3351
2730void 3352void
2731down (SV *self) 3353down (...)
2732 CODE: 3354 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3355 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3356
3357void
3358wait (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3361
2735void 3362void
2736try (SV *self) 3363try (SV *self)
2737 PPCODE: 3364 PPCODE:
2738{ 3365{
… …
2750 XSRETURN_NO; 3377 XSRETURN_NO;
2751} 3378}
2752 3379
2753void 3380void
2754waiters (SV *self) 3381waiters (SV *self)
2755 CODE: 3382 PPCODE:
2756{ 3383{
2757 AV *av = (AV *)SvRV (self); 3384 AV *av = (AV *)SvRV (self);
3385 int wcount = AvFILLp (av) + 1 - 1;
2758 3386
2759 if (GIMME_V == G_SCALAR) 3387 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3388 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3389 else
2762 { 3390 {
2763 int i; 3391 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3392 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3393 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3395 }
2768} 3396}
2769 3397
3398MODULE = Coro::State PACKAGE = Coro::Signal
3399
3400SV *
3401new (SV *klass)
3402 CODE:
3403 RETVAL = sv_bless (
3404 coro_waitarray_new (aTHX_ 0),
3405 GvSTASH (CvGV (cv))
3406 );
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411wait (...)
3412 CODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3414
3415void
3416broadcast (SV *self)
3417 CODE:
3418{
3419 AV *av = (AV *)SvRV (self);
3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
3421}
3422
3423void
3424send (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428
3429 if (AvFILLp (av))
3430 coro_signal_wake (aTHX_ av, 1);
3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
3441
3442
3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
3444
3445BOOT:
3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3447
3448void
3449_schedule (...)
3450 CODE:
3451{
3452 static int incede;
3453
3454 api_cede_notself (aTHX);
3455
3456 ++incede;
3457 while (coro_nready >= incede && api_cede (aTHX))
3458 ;
3459
3460 sv_setsv (sv_activity, &PL_sv_undef);
3461 if (coro_nready >= incede)
3462 {
3463 PUSHMARK (SP);
3464 PUTBACK;
3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3466 }
3467
3468 --incede;
3469}
3470
3471
3472MODULE = Coro::State PACKAGE = Coro::AIO
3473
3474void
3475_register (char *target, char *proto, SV *req)
3476 CODE:
3477{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req);
3479 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483}
3484

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