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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 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);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static 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 */
172 181
173static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 184static SV *rv_diehook;
176static SV *rv_warnhook; 185static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
178 187
179/* async_pool helper stuff */ 188/* async_pool helper stuff */
180static SV *sv_pool_rss; 189static SV *sv_pool_rss;
181static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
182static 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;
183 196
184/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
185static SV *sv_activity; 198static SV *sv_activity;
186 199
187static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 229 int valgrind_id;
217#endif 230#endif
218 unsigned char flags; 231 unsigned char flags;
219} coro_cctx; 232} coro_cctx;
220 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
221enum { 238enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
230{ 247{
231 SV *defsv; 248 SV *defsv;
232 AV *defav; 249 AV *defav;
233 SV *errsv; 250 SV *errsv;
234 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
235#define VAR(name,type) type name; 253#define VAR(name,type) type name;
236# include "state.h" 254# include "state.h"
237#undef VAR 255#undef VAR
238} perl_slots; 256} perl_slots;
239 257
… …
242/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
243struct coro { 261struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 263 coro_cctx *cctx;
246 264
247 /* process data */ 265 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 267 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
251 269
270 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 275 void (*on_destroy)(pTHX_ struct coro *coro);
257 276
258 /* statistics */ 277 /* statistics */
259 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
260 279
261 /* coro process data */ 280 /* coro process data */
262 int prio; 281 int prio;
263 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
264 284
265 /* async_pool */ 285 /* async_pool */
266 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
267 289
268 /* linked list */ 290 /* linked list */
269 struct coro *next, *prev; 291 struct coro *next, *prev;
270}; 292};
271 293
272typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
274 296
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 */
275static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
276 301
277/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
278 303
279#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
285 310
286/* for Coro.pm */ 311/* for Coro.pm */
287static SV *coro_current; 312static SV *coro_current;
288static SV *coro_readyhook; 313static SV *coro_readyhook;
289static 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;
290static struct coro *coro_first; 316static struct coro *coro_first;
291#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
292 318
293/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
294 320
… …
320 get_hv (name, create); 346 get_hv (name, create);
321#endif 347#endif
322 return get_hv (name, create); 348 return get_hv (name, create);
323} 349}
324 350
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
325static AV * 360static AV *
326coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
327{ 362{
328 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
330 365
331 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 417
383 return 0; 418 return 0;
384} 419}
385 420
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 423
389static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 425 0, 0, 0, 0,
391 coro_cv_free 426 coro_cv_free
392}; 427};
393 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
394#define CORO_MAGIC(sv, type) \ 434#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \ 435 (expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 436 ? CORO_MAGIC_NN (sv, type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0 437 : 0)
400 438
401#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)
402#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)
403 441
404INLINE struct coro * 442INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
406{ 444{
407 HV *stash; 445 HV *stash;
… …
425 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
426} 464}
427 465
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429 467
430/* fastert than SvSTATE, but expects a coroutine hv */ 468/* faster than SvSTATE, but expects a coroutine hv */
431INLINE struct coro * 469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 471
443/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
444static void 473static void
445get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
… …
452 else 481 else
453 { 482 {
454#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
461#else 490#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 492#endif
464 } 493 }
465} 494}
466 495
467static void 496static void
… …
489 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
490 c->slot = 0; 519 c->slot = 0;
491 520
492 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
493 522
494 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
498 528
499 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 530 # include "state.h"
501 #undef VAR 531 #undef VAR
502 532
… …
514 } 544 }
515 545
516 PUTBACK; 546 PUTBACK;
517 } 547 }
518 548
519 slf_frame = c->slf_frame; 549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
520} 551}
521 552
522static void 553static void
523save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
524{ 555{
556 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 557 c->slf_frame = slf_frame;
526 558
527 { 559 {
528 dSP; 560 dSP;
529 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
587 619
588 { 620 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 622
591 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
595 628
596 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 630 # include "state.h"
598 #undef VAR 631 #undef VAR
599 } 632 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
607 */ 640 */
608#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
610#else 643#else
611static void 644static void
612coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
613{ 646{
614 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 711 Safefree (PL_retstack);
679#endif 712#endif
680} 713}
681 714
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
682static size_t 724static size_t
683coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
684{ 726{
685 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
686 728
687 if (coro->mainstack) 729 if (coro->mainstack)
688 { 730 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
693 { 732 {
694 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
695 734 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 735 #undef SYM
699 } 736 }
700 else 737 else
701 slot = coro->slot;
702
703 if (slot)
704 { 738 {
705 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 742 }
717 } 743 }
718 744
719 return rss; 745 return rss;
720} 746}
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 848slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 849{
824 return 0; 850 return 0;
825} 851}
826 852
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
829{ 863{
830 /* 864 /*
831 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
832 */ 866 */
… …
834 868
835 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 876 PL_curpm = 0;
840 PL_curpad = 0; 877 PL_curpad = 0;
841 PL_localizing = 0; 878 PL_localizing = 0;
842 PL_dirty = 0; 879 PL_dirty = 0;
843 PL_restartop = 0; 880 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 882 PL_parser = 0;
846#endif 883#endif
884 PL_hints = 0;
847 885
848 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
849 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 );
850 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);
851 889
852 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 897
859 { 898 {
860 dSP; 899 dSP;
861 UNOP myop; 900 UNOP myop;
862 901
863 Zero (&myop, 1, UNOP); 902 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
866 906
867 PUSHMARK (SP); 907 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 909 PUTBACK;
870 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 912 }
874 913
875 /* 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
876 * 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.
877 */ 916 */
878 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 */
879 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;
880} 930}
881 931
882static void 932static void
883coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
884{ 934{
… …
903 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
908 959
909 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
911 962
912 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
914 967
915 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
916} 969}
917 970
918INLINE void 971INLINE void
… …
928static int 981static int
929runops_trace (pTHX) 982runops_trace (pTHX)
930{ 983{
931 COP *oldcop = 0; 984 COP *oldcop = 0;
932 int oldcxix = -2; 985 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 986
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 988 {
938 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
939 990
940 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
941 { 992 {
942 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)
943 { 994 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 996 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
947 SV **cb; 998 SV **cb;
… …
984 1035
985 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
986 { 1037 {
987 SV **cb; 1038 SV **cb;
988 1039
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1041 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1043
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1045 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1046 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
999 1049
1000 if (isGV (gv)) 1050 if (isGV (gv))
… …
1005 SAVETMPS; 1055 SAVETMPS;
1006 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1057 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1059 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1061 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1064 SPAGAIN;
1015 FREETMPS; 1065 FREETMPS;
… …
1018 } 1068 }
1019 1069
1020 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
1021 } 1071 }
1022 1072
1023 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1074 {
1025 dSP; 1075 dSP;
1026 1076
1027 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1078 ENTER;
… …
1047 1097
1048 TAINT_NOT; 1098 TAINT_NOT;
1049 return 0; 1099 return 0;
1050} 1100}
1051 1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1052static void 1104static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1106{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1107 ta->prev = 0;
1057} 1108}
1058 1109
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1110static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1112{
1062/* 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 */
1063static void NOINLINE 1119static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1065{ 1121{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1070 1123
1071 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1073 1126
1074 Zero (&myop, 1, UNOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1076 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));
1077 1131
1078 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1134
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1137}
1087 1138
1088/* 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 */
1089INLINE void 1140INLINE void
1090transfer_tail (pTHX) 1141transfer_tail (pTHX)
1091{ 1142{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1143 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1144}
1107 1145
1108/* 1146/*
1109 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1148 */
… …
1122 /* normally we would need to skip the entersub here */ 1160 /* normally we would need to skip the entersub here */
1123 /* 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 */
1124 /* PL_nop = PL_nop->op_next */ 1162 /* PL_nop = PL_nop->op_next */
1125 1163
1126 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1128 1166
1129 /* cctx_run is the alternative tail of transfer() */ 1167 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1168 transfer_tail (aTHX);
1132 1169
1133 /* 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 */
1134 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1135 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 */
1136 1177
1137 /* 1178 /*
1138 * 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
1139 * 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)
1140 * 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
… …
1224cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
1225{ 1266{
1226 if (!cctx) 1267 if (!cctx)
1227 return; 1268 return;
1228 1269
1270 assert (cctx != cctx_current);//D temporary
1271
1229 --cctx_count; 1272 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1273 coro_destroy (&cctx->cctx);
1231 1274
1232 /* coro_transfer creates new, empty cctx's */ 1275 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1276 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
1292 1335
1293static void 1336static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1296 if (expect_true (prev != next)) 1341 if (expect_true (prev != next))
1297 { 1342 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1300 1345
1301 if (expect_false (next->flags & CF_RUNNING)) 1346 if (expect_false (next->flags & CF_RUNNING))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303 1348
1304 if (expect_false (next->flags & CF_DESTROYED)) 1349 if (expect_false (next->flags & CF_DESTROYED))
… …
1310#endif 1355#endif
1311 } 1356 }
1312} 1357}
1313 1358
1314/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
1315static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1362{
1318 dSTACKLEVEL; 1363 dSTACKLEVEL;
1319 1364
1320 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1366 if (expect_false (!prev))
1322 { 1367 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1368 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1370 }
1326 else if (expect_true (prev != next)) 1371 else if (expect_true (prev != next))
1327 { 1372 {
1328 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1329 1374
1330 if (expect_false (prev->flags & CF_NEW)) 1375 if (expect_false (prev->flags & CF_NEW))
1331 { 1376 {
1332 /* create a new empty/source context */ 1377 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1336 } 1380 }
1337 1381
1338 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1350 } 1394 }
1351 else 1395 else
1352 load_perl (aTHX_ next); 1396 load_perl (aTHX_ next);
1353 1397
1354 prev__cctx = prev->cctx; 1398 assert (!prev->cctx);//D temporary
1355 1399
1356 /* possibly untie and reuse the cctx */ 1400 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1401 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1402 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1403 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1404 && !force_cctx
1361 )) 1405 ))
1362 { 1406 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1409
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1413 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1414 next->cctx = cctx_get (aTHX);
1373 1415
1374 cctx_put (prev__cctx); 1416 cctx_put (cctx_current);
1375 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1376 1420
1377 ++next->usecount; 1421 ++next->usecount;
1378 1422
1379 if (expect_true (!next->cctx)) 1423 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1425
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1426 next->cctx = 0;
1383 transfer_next = next;
1384 1427
1385 if (expect_false (prev__cctx != next->cctx)) 1428 if (expect_false (cctx_prev != cctx_current))
1386 { 1429 {
1387 prev__cctx->top_env = PL_top_env; 1430 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1431 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1433 }
1391 1434
1392 transfer_tail (aTHX); 1435 transfer_tail (aTHX);
1393 } 1436 }
1394} 1437}
… …
1433 1476
1434 coro->slot = 0; 1477 coro->slot = 0;
1435 } 1478 }
1436 1479
1437 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1439 1484
1440 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1443 1488
… …
1497 1542
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1544 TRANSFER (ta, 1);
1500} 1545}
1501 1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1502/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1503 1571
1504INLINE void 1572INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1573coro_enq (pTHX_ struct coro *coro)
1506{ 1574{
… …
1524{ 1592{
1525 struct coro *coro; 1593 struct coro *coro;
1526 SV *sv_hook; 1594 SV *sv_hook;
1527 void (*xs_hook)(void); 1595 void (*xs_hook)(void);
1528 1596
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1533 1598
1534 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1535 return 0; 1600 return 0;
1536 1601
… …
1549 ENTER; 1614 ENTER;
1550 SAVETMPS; 1615 SAVETMPS;
1551 1616
1552 PUSHMARK (SP); 1617 PUSHMARK (SP);
1553 PUTBACK; 1618 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1620
1557 FREETMPS; 1621 FREETMPS;
1558 LEAVE; 1622 LEAVE;
1559 } 1623 }
1560 1624
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1569{ 1633{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1635}
1572 1636
1637/* expects to own a reference to next->hv */
1573INLINE void 1638INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1640{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1616 ta->prev = SvSTATE_hv (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1617 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1647
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1621 1649
1622 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1624} 1652}
1625 1653
1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1703}
1704
1626INLINE void 1705INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1707{
1629 api_ready (aTHX_ coro_current); 1708 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
… …
1649{ 1728{
1650 struct coro_transfer_args ta; 1729 struct coro_transfer_args ta;
1651 1730
1652 prepare_schedule (aTHX_ &ta); 1731 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1732 TRANSFER (ta, 1);
1733}
1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1654} 1743}
1655 1744
1656static int 1745static int
1657api_cede (pTHX) 1746api_cede (pTHX)
1658{ 1747{
… …
1687static void 1776static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1778{
1690 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1691 1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1692 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1693 { 1785 {
1694 if (!coro->cctx) 1786 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1787 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1790
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1792 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1794 {
… …
1705 if (coro->flags & CF_RUNNING) 1797 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1798 PL_runops = RUNOPS_DEFAULT;
1707 else 1799 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1800 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1801 }
1802}
1803
1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1860static int
1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1862{
1863 HV *hv = (HV *)SvRV (coro_current);
1864 struct coro *coro = (struct coro *)frame->data;
1865
1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1989
1990 return 0;
1991}
1992
1993static void
1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 SV *cb;
1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2033
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */
2036
2037 SvREFCNT_dec (coro->rouse_cb);
2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
1710} 2283}
1711 2284
1712/*****************************************************************************/ 2285/*****************************************************************************/
1713/* PerlIO::cede */ 2286/* PerlIO::cede */
1714 2287
… …
1783 PerlIOBuf_get_cnt, 2356 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2357 PerlIOBuf_set_ptrcnt,
1785}; 2358};
1786 2359
1787/*****************************************************************************/ 2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
1788 2362
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2363static SV *
1800pp_restore (pTHX) 2364coro_waitarray_new (pTHX_ int count)
1801{ 2365{
1802 dSP; 2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
1803 2369
1804 PUSHMARK (SP); 2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
1805 2378
1806 EXTEND (SP, 3); 2379 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2380}
1814 2381
1815static void 2382/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990 2383
1991static void 2384static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2386{
1994 SV *count_sv = AvARRAY (av)[0]; 2387 SV *count_sv = AvARRAY (av)[0];
… …
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2400 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2401 cb = av_shift (av);
2009 2402
2010 if (SvOBJECT (cb)) 2403 if (SvOBJECT (cb))
2404 {
2011 api_ready (aTHX_ cb); 2405 api_ready (aTHX_ cb);
2012 else 2406 --count;
2013 croak ("callbacks not yet supported"); 2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
2014 2416
2015 SvREFCNT_dec (cb); 2417 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2418 }
2019} 2419}
2020 2420
2021static void 2421static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2426}
2027 2427
2028static int 2428static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2430{
2031 AV *av = (AV *)frame->data; 2431 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2432 SV *count_sv = AvARRAY (av)[0];
2033 2433
2434 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW)
2436 return 0;
2034 if (SvIVX (count_sv) > 0) 2437 else if (SvIVX (count_sv) > 0)
2035 { 2438 {
2036 SvSTATE_current->on_destroy = 0; 2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2038 return 0; 2446 return 0;
2039 } 2447 }
2040 else 2448 else
2041 { 2449 {
2042 int i; 2450 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2460 return 1;
2053 } 2461 }
2054} 2462}
2055 2463
2056static void 2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2478{
2059 AV *av = (AV *)SvRV (arg [0]); 2479 AV *av = (AV *)SvRV (arg [0]);
2060 2480
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2482 {
2063 frame->data = (void *)av; 2483 frame->data = (void *)av;
2064 frame->prepare = prepare_nop; 2484 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 } 2485 }
2067 else 2486 else
2068 { 2487 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070 2489
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule; 2491 frame->prepare = prepare_schedule;
2073 2492
2074 /* to avoid race conditions when a woken-up coro gets terminated */ 2493 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2496 }
2497}
2079 2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2080 frame->check = slf_check_semaphore_down; 2503 frame->check = slf_check_semaphore_down;
2504}
2081 2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2082} 2585}
2083 2586
2084/*****************************************************************************/ 2587/*****************************************************************************/
2588/* Coro::AIO */
2085 2589
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2087 2591
2088/* create a closure from XS, returns a code reference */ 2592/* helper storage struct */
2089/* the arg can be accessed via GENSUB_ARG from the callback */ 2593struct io_state
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{ 2594{
2094 CV *cv = (CV *)NEWSV (0, 0); 2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
2599};
2095 2600
2601static void
2602coro_aio_callback (pTHX_ CV *cv)
2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2096 sv_upgrade ((SV *)cv, SVt_PVCV); 2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2097 2614
2098 CvANON_on (cv); 2615 {
2099 CvISXSUB_on (cv); 2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102 2617
2103 return newRV_noinc ((SV *)cv); 2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
2669 dSP;
2670 int i;
2671
2672 EXTEND (SP, AvFILLp (state) + 1);
2673 for (i = 0; i <= AvFILLp (state); ++i)
2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2675
2676 PUTBACK;
2677 }
2678
2679 return 0;
2680}
2681
2682static void
2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2686 SV *coro_hv = SvRV (coro_current);
2687 struct coro *coro = SvSTATE_hv (coro_hv);
2688
2689 /* put our coroutine id on the state arg */
2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
2691
2692 /* first see whether we have a non-zero priority and set it as AIO prio */
2693 if (coro->prio)
2694 {
2695 dSP;
2696
2697 static SV *prio_cv;
2698 static SV *prio_sv;
2699
2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
2705
2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
2709
2710 PUTBACK;
2711 call_sv (prio_cv, G_VOID | G_DISCARD);
2712 }
2713
2714 /* now call the original request */
2715 {
2716 dSP;
2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
2719
2720 PUSHMARK (SP);
2721
2722 /* first push all args to the stack */
2723 EXTEND (SP, items + 1);
2724
2725 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]);
2727
2728 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730
2731 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 }
2735
2736 /* now that the requets is going, we loop toll we have a result */
2737 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req;
2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2104} 2750}
2105 2751
2106/*****************************************************************************/ 2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
2107 2757
2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2109 2759
2110PROTOTYPES: DISABLE 2760PROTOTYPES: DISABLE
2111 2761
… …
2116 coro_thx = PERL_GET_CONTEXT; 2766 coro_thx = PERL_GET_CONTEXT;
2117# endif 2767# endif
2118#endif 2768#endif
2119 BOOT_PAGESIZE; 2769 BOOT_PAGESIZE;
2120 2770
2771 cctx_current = cctx_new_empty ();
2772
2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2123 2775
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2777 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2144 2796
2145 { 2797 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147 2799
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf, 2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2150 newSVpv ("coro_slf", 0), 0);
2151 2802
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf, 2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2154 newSVpv ("coro schedule like function", 0), 0);
2155 } 2805 }
2156 2806
2157 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION; 2808 coroapi.rev = CORO_API_REVISION;
2159 2809
… …
2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2179} 2829}
2180 2830
2181SV * 2831SV *
2182new (char *klass, ...) 2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
2183 CODE: 2835 CODE:
2184{ 2836{
2185 struct coro *coro; 2837 struct coro *coro;
2186 MAGIC *mg; 2838 MAGIC *mg;
2187 HV *hv; 2839 HV *hv;
2840 CV *cb;
2188 int i; 2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2189 2856
2190 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
2191 coro->args = newAV (); 2858 coro->args = newAV ();
2192 coro->flags = CF_NEW; 2859 coro->flags = CF_NEW;
2193 2860
… …
2198 coro->hv = hv = newHV (); 2865 coro->hv = hv = newHV ();
2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP; 2867 mg->mg_flags |= MGf_DUP;
2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2202 2869
2870 if (items > 1)
2871 {
2203 av_extend (coro->args, items - 1); 2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
2204 for (i = 1; i < items; i++) 2882 for (i = 2; i < items; i++)
2205 av_push (coro->args, newSVsv (ST (i))); 2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
2206} 2885}
2207 OUTPUT: 2886 OUTPUT:
2208 RETVAL 2887 RETVAL
2209
2210void
2211_set_stacklevel (...)
2212 CODE:
2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2214 2888
2215void 2889void
2216transfer (...) 2890transfer (...)
2217 PROTOTYPE: $$ 2891 PROTOTYPE: $$
2218 CODE: 2892 CODE:
2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220 2894
2221bool 2895bool
2222_destroy (SV *coro_sv) 2896_destroy (SV *coro_sv)
2223 CODE: 2897 CODE:
2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2228void 2902void
2229_exit (int code) 2903_exit (int code)
2230 PROTOTYPE: $ 2904 PROTOTYPE: $
2231 CODE: 2905 CODE:
2232 _exit (code); 2906 _exit (code);
2907
2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
2233 2926
2234int 2927int
2235cctx_stacksize (int new_stacksize = 0) 2928cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$ 2929 PROTOTYPE: ;$
2237 CODE: 2930 CODE:
… …
2342 3035
2343void 3036void
2344throw (Coro::State self, SV *throw = &PL_sv_undef) 3037throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$ 3038 PROTOTYPE: $;$
2346 CODE: 3039 CODE:
3040{
3041 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
2347 SvREFCNT_dec (self->throw); 3043 SvREFCNT_dec (*throwp);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
2349 3046
2350void 3047void
2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$ 3049 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags 3050 C_ARGS: aTHX_ coro, flags
2354 3051
2355SV * 3052SV *
2356has_cctx (Coro::State coro) 3053has_cctx (Coro::State coro)
2357 PROTOTYPE: $ 3054 PROTOTYPE: $
2358 CODE: 3055 CODE:
2359 RETVAL = boolSV (!!coro->cctx); 3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2360 OUTPUT: 3058 OUTPUT:
2361 RETVAL 3059 RETVAL
2362 3060
2363int 3061int
2364is_traced (Coro::State coro) 3062is_traced (Coro::State coro)
… …
2384 3082
2385void 3083void
2386force_cctx () 3084force_cctx ()
2387 PROTOTYPE: 3085 PROTOTYPE:
2388 CODE: 3086 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0; 3087 cctx_current->idle_sp = 0;
2390 3088
2391void 3089void
2392swap_defsv (Coro::State self) 3090swap_defsv (Coro::State self)
2393 PROTOTYPE: $ 3091 PROTOTYPE: $
2394 ALIAS: 3092 ALIAS:
… …
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403 3101
2404 SV *tmp = *src; *src = *dst; *dst = tmp; 3102 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 } 3103 }
2406 3104
3105
2407MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
2408 3107
2409BOOT: 3108BOOT:
2410{ 3109{
2411 int i; 3110 int i;
2412 3111
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2416 3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2418 SvREADONLY_on (coro_current); 3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2419 3126
2420 coro_stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
2421 3128
2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2423 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2431 3138
2432 { 3139 {
2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2434 3141
2435 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
3143 coroapi.schedule_to = api_schedule_to;
2436 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
2437 coroapi.cede_notself = api_cede_notself; 3145 coroapi.cede_notself = api_cede_notself;
2438 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
2439 coroapi.is_ready = api_is_ready; 3147 coroapi.is_ready = api_is_ready;
2440 coroapi.nready = coro_nready; 3148 coroapi.nready = coro_nready;
2441 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
2442 3150
2443 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
2444 sv_setiv (sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
2445 SvREADONLY_on (sv); 3153 SvREADONLY_on (sv);
2446 } 3154 }
2447} 3155}
2448 3156
2449void 3157void
3158terminate (...)
3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
2450schedule (...) 3163schedule (...)
2451 CODE: 3164 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2453 3176
2454void 3177void
2455cede (...) 3178cede (...)
2456 CODE: 3179 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
2458 3181
2459void 3182void
2460cede_notself (...) 3183cede_notself (...)
2461 CODE: 3184 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
2463 3192
2464void 3193void
2465_set_current (SV *current) 3194_set_current (SV *current)
2466 PROTOTYPE: $ 3195 PROTOTYPE: $
2467 CODE: 3196 CODE:
… …
2512 CODE: 3241 CODE:
2513 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
2514 OUTPUT: 3243 OUTPUT:
2515 RETVAL 3244 RETVAL
2516 3245
2517# for async_pool speedup
2518void 3246void
2519_pool_1 (SV *cb) 3247_pool_handler (...)
2520 CODE: 3248 CODE:
2521{ 3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
2524 AV *defav = GvAV (PL_defgv);
2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2526 AV *invoke_av;
2527 int i, len;
2528
2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
2534 croak ("\3async_pool terminate\2\n");
2535 }
2536
2537 SvREFCNT_dec (coro->saved_deffh);
2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2539
2540 hv_store (hv, "desc", sizeof ("desc") - 1,
2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2542
2543 invoke_av = (AV *)SvRV (invoke);
2544 len = av_len (invoke_av);
2545
2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2547
2548 if (len > 0)
2549 {
2550 av_fill (defav, len - 1);
2551 for (i = 0; i < len; ++i)
2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2553 }
2554}
2555 3250
2556void 3251void
2557_pool_2 (SV *cb) 3252async_pool (SV *cv, ...)
2558 CODE:
2559{
2560 struct coro *coro = SvSTATE_current;
2561
2562 sv_setsv (cb, &PL_sv_undef);
2563
2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2565 coro->saved_deffh = 0;
2566
2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
2573 croak ("\3async_pool terminate\2\n");
2574 }
2575
2576 av_clear (GvAV (PL_defgv));
2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579
2580 coro->prio = 0;
2581
2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2583 api_trace (aTHX_ coro_current, 0);
2584
2585 av_push (av_async_pool, newSVsv (coro_current));
2586}
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void
2592_get_state (SV *self)
2593 PROTOTYPE: $ 3253 PROTOTYPE: &@
2594 PPCODE: 3254 PPCODE:
2595{ 3255{
2596 AV *defav = GvAV (PL_defgv); 3256 HV *hv = (HV *)av_pop (av_async_pool);
2597 AV *av = newAV (); 3257 AV *av = newAV ();
3258 SV *cb = ST (0);
2598 int i; 3259 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603 3260
2604 data->errorno = errno; 3261 av_extend (av, items - 2);
2605 data->laststype = PL_laststype; 3262 for (i = 1; i < items; ++i)
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
2613 3264
2614 av_push (av, data_sv); 3265 if ((SV *)hv == &PL_sv_undef)
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 { 3266 {
2661 PUSHMARK (SP); 3267 PUSHMARK (SP);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
2662 PUTBACK; 3271 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2664 SPAGAIN; 3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2665 } 3276 }
2666 3277
2667 --incede; 3278 {
3279 struct coro *coro = SvSTATE_hv (hv);
3280
3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
3285 }
3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
3292 SvREFCNT_dec (hv);
2668} 3293}
3294
3295SV *
3296rouse_cb ()
3297 PROTOTYPE:
3298 CODE:
3299 RETVAL = coro_new_rouse_cb (aTHX);
3300 OUTPUT:
3301 RETVAL
3302
3303void
3304rouse_wait (...)
3305 PROTOTYPE: ;$
3306 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2669 3308
2670 3309
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3310MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3311
2673BOOT: 3312BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3314
3315
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3316MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3317
2678SV * 3318SV *
2679new (SV *klass, SV *count_ = 0) 3319new (SV *klass, SV *count = 0)
2680 CODE: 3320 CODE:
2681{ 3321 RETVAL = sv_bless (
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2683 AV *av = newAV (); 3323 GvSTASH (CvGV (cv))
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3324 );
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3325 OUTPUT:
2686} 3326 RETVAL
3327
3328# helper for Coro::Channel
3329SV *
3330_alloc (int count)
3331 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3333 OUTPUT:
2688 RETVAL 3334 RETVAL
2689 3335
2690SV * 3336SV *
2691count (SV *self) 3337count (SV *self)
… …
2700 adjust = 1 3346 adjust = 1
2701 CODE: 3347 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 3349
2704void 3350void
2705down (SV *self) 3351down (...)
2706 CODE: 3352 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2708 3359
2709void 3360void
2710try (SV *self) 3361try (SV *self)
2711 PPCODE: 3362 PPCODE:
2712{ 3363{
… …
2724 XSRETURN_NO; 3375 XSRETURN_NO;
2725} 3376}
2726 3377
2727void 3378void
2728waiters (SV *self) 3379waiters (SV *self)
2729 CODE: 3380 PPCODE:
2730{ 3381{
2731 AV *av = (AV *)SvRV (self); 3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
2732 3384
2733 if (GIMME_V == G_SCALAR) 3385 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3386 XPUSHs (sv_2mortal (newSViv (wcount)));
2735 else 3387 else
2736 { 3388 {
2737 int i; 3389 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1); 3390 EXTEND (SP, wcount);
2739 for (i = 1; i <= AvFILLp (av); ++i) 3391 for (i = 1; i <= wcount; ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i])); 3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2741 } 3393 }
2742} 3394}
2743 3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
3416{
3417 AV *av = (AV *)SvRV (self);
3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
3419}
3420
3421void
3422send (SV *self)
3423 CODE:
3424{
3425 AV *av = (AV *)SvRV (self);
3426
3427 if (AvFILLp (av))
3428 coro_signal_wake (aTHX_ av, 1);
3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
3439
3440
3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
3442
3443BOOT:
3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3445
3446void
3447_schedule (...)
3448 CODE:
3449{
3450 static int incede;
3451
3452 api_cede_notself (aTHX);
3453
3454 ++incede;
3455 while (coro_nready >= incede && api_cede (aTHX))
3456 ;
3457
3458 sv_setsv (sv_activity, &PL_sv_undef);
3459 if (coro_nready >= incede)
3460 {
3461 PUSHMARK (SP);
3462 PUTBACK;
3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3464 }
3465
3466 --incede;
3467}
3468
3469
3470MODULE = Coro::State PACKAGE = Coro::AIO
3471
3472void
3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
3482

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