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Comparing Coro/Coro/State.xs (file contents):
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 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_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
187 181
188static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 184static SV *rv_diehook;
191static SV *rv_warnhook; 185static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
193 187
194/* async_pool helper stuff */ 188/* async_pool helper stuff */
195static SV *sv_pool_rss; 189static SV *sv_pool_rss;
196static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
198 196
199/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
200static SV *sv_activity; 198static SV *sv_activity;
201 199
202static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 229 int valgrind_id;
232#endif 230#endif
233 unsigned char flags; 231 unsigned char flags;
234} coro_cctx; 232} coro_cctx;
235 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
236enum { 238enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
245{ 247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
… …
257/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
258struct coro { 261struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 263 coro_cctx *cctx;
261 264
262 /* process data */ 265 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 267 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
266 269
270 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
271 276
272 /* statistics */ 277 /* statistics */
273 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
274 279
275 /* coro process data */ 280 /* coro process data */
276 int prio; 281 int prio;
277 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
278 284
279 /* async_pool */ 285 /* async_pool */
280 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* on_enter/on_leave */
291 AV *on_enter;
292 AV *on_leave;
281 293
282 /* linked list */ 294 /* linked list */
283 struct coro *next, *prev; 295 struct coro *next, *prev;
284}; 296};
285 297
286typedef struct coro *Coro__State; 298typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 299typedef struct coro *Coro__State_or_hashref;
288 300
301/* the following variables are effectively part of the perl context */
302/* and get copied between struct coro and these variables */
303/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 304static struct CoroSLF slf_frame; /* the current slf frame */
290 305
291/** Coro ********************************************************************/ 306/** Coro ********************************************************************/
292 307
293#define PRIO_MAX 3 308#define PRIO_MAX 3
… …
299 314
300/* for Coro.pm */ 315/* for Coro.pm */
301static SV *coro_current; 316static SV *coro_current;
302static SV *coro_readyhook; 317static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 318static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
319static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 320static struct coro *coro_first;
305#define coro_nready coroapi.nready 321#define coro_nready coroapi.nready
306 322
307/** lowlevel stuff **********************************************************/ 323/** lowlevel stuff **********************************************************/
308 324
… …
334 get_hv (name, create); 350 get_hv (name, create);
335#endif 351#endif
336 return get_hv (name, create); 352 return get_hv (name, create);
337} 353}
338 354
355/* may croak */
356INLINE CV *
357coro_sv_2cv (pTHX_ SV *sv)
358{
359 HV *st;
360 GV *gvp;
361 CV *cv = sv_2cv (sv, &st, &gvp, 0);
362
363 if (!cv)
364 croak ("code reference expected");
365
366 return cv;
367}
368
369/*****************************************************************************/
370/* magic glue */
371
372#define CORO_MAGIC_type_cv 26
373#define CORO_MAGIC_type_state PERL_MAGIC_ext
374
375#define CORO_MAGIC_NN(sv, type) \
376 (expect_true (SvMAGIC (sv)->mg_type == type) \
377 ? SvMAGIC (sv) \
378 : mg_find (sv, type))
379
380#define CORO_MAGIC(sv, type) \
381 (expect_true (SvMAGIC (sv)) \
382 ? CORO_MAGIC_NN (sv, type) \
383 : 0)
384
385#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
386#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
387
388INLINE struct coro *
389SvSTATE_ (pTHX_ SV *coro)
390{
391 HV *stash;
392 MAGIC *mg;
393
394 if (SvROK (coro))
395 coro = SvRV (coro);
396
397 if (expect_false (SvTYPE (coro) != SVt_PVHV))
398 croak ("Coro::State object required");
399
400 stash = SvSTASH (coro);
401 if (expect_false (stash != coro_stash && stash != coro_state_stash))
402 {
403 /* very slow, but rare, check */
404 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
405 croak ("Coro::State object required");
406 }
407
408 mg = CORO_MAGIC_state (coro);
409 return (struct coro *)mg->mg_ptr;
410}
411
412#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
413
414/* faster than SvSTATE, but expects a coroutine hv */
415#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
416#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
417
418/*****************************************************************************/
419/* padlist management and caching */
420
339static AV * 421static AV *
340coro_clone_padlist (pTHX_ CV *cv) 422coro_derive_padlist (pTHX_ CV *cv)
341{ 423{
342 AV *padlist = CvPADLIST (cv); 424 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 425 AV *newpadlist, *newpad;
344 426
345 newpadlist = newAV (); 427 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 432 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 433#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 434 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 435 --AvFILLp (padlist);
354 436
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 437 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 438 av_store (newpadlist, 1, (SV *)newpad);
357 439
358 return newpadlist; 440 return newpadlist;
359} 441}
360 442
361static void 443static void
362free_padlist (pTHX_ AV *padlist) 444free_padlist (pTHX_ AV *padlist)
363{ 445{
364 /* may be during global destruction */ 446 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 447 if (!IN_DESTRUCT)
366 { 448 {
367 I32 i = AvFILLp (padlist); 449 I32 i = AvFILLp (padlist);
368 while (i >= 0) 450
451 while (i > 0) /* special-case index 0 */
369 { 452 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 453 /* we try to be extra-careful here */
371 if (svp) 454 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 455 I32 j = AvFILLp (av);
373 SV *sv; 456
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 457 while (j >= 0)
458 SvREFCNT_dec (AvARRAY (av)[j--]);
459
460 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 461 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 462 }
380 463
464 SvREFCNT_dec (AvARRAY (padlist)[0]);
465
466 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 467 SvREFCNT_dec ((SV*)padlist);
382 } 468 }
383} 469}
384 470
385static int 471static int
… …
394 480
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 481 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 482
397 return 0; 483 return 0;
398} 484}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 485
403static MGVTBL coro_cv_vtbl = { 486static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 487 0, 0, 0, 0,
405 coro_cv_free 488 coro_cv_free
406}; 489};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 490
444/* the next two functions merely cache the padlists */ 491/* the next two functions merely cache the padlists */
445static void 492static void
446get_padlist (pTHX_ CV *cv) 493get_padlist (pTHX_ CV *cv)
447{ 494{
… …
453 else 500 else
454 { 501 {
455#if CORO_PREFER_PERL_FUNCTIONS 502#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 503 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 504 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 505 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 506 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 507 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 508 SvREFCNT_dec (cp);
462#else 509#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 510 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 511#endif
465 } 512 }
466} 513}
467 514
468static void 515static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 522 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 523
477 av = (AV *)mg->mg_obj; 524 av = (AV *)mg->mg_obj;
478 525
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 526 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 527 av_extend (av, AvFILLp (av) + 1);
481 528
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 529 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 530}
484 531
485/** load & save, init *******************************************************/ 532/** load & save, init *******************************************************/
533
534static void
535on_enterleave_call (pTHX_ SV *cb);
486 536
487static void 537static void
488load_perl (pTHX_ Coro__State c) 538load_perl (pTHX_ Coro__State c)
489{ 539{
490 perl_slots *slot = c->slot; 540 perl_slots *slot = c->slot;
491 c->slot = 0; 541 c->slot = 0;
492 542
493 PL_mainstack = c->mainstack; 543 PL_mainstack = c->mainstack;
494 544
495 GvSV (PL_defgv) = slot->defsv; 545 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 546 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 547 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 548 GvSV (irsgv) = slot->irsgv;
549 GvHV (PL_hintgv) = slot->hinthv;
499 550
500 #define VAR(name,type) PL_ ## name = slot->name; 551 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 552 # include "state.h"
502 #undef VAR 553 #undef VAR
503 554
… …
515 } 566 }
516 567
517 PUTBACK; 568 PUTBACK;
518 } 569 }
519 570
520 slf_frame = c->slf_frame; 571 slf_frame = c->slf_frame;
572 CORO_THROW = c->except;
573
574 if (expect_false (c->on_enter))
575 {
576 int i;
577
578 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
579 on_enterleave_call (AvARRAY (c->on_enter)[i]);
580 }
521} 581}
522 582
523static void 583static void
524save_perl (pTHX_ Coro__State c) 584save_perl (pTHX_ Coro__State c)
525{ 585{
586 if (expect_false (c->on_leave))
587 {
588 int i;
589
590 for (i = AvFILLp (c->on_leave); i >= 0; --i)
591 on_enterleave_call (AvARRAY (c->on_leave)[i]);
592 }
593
594 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 595 c->slf_frame = slf_frame;
527 596
528 { 597 {
529 dSP; 598 dSP;
530 I32 cxix = cxstack_ix; 599 I32 cxix = cxstack_ix;
… …
587 c->mainstack = PL_mainstack; 656 c->mainstack = PL_mainstack;
588 657
589 { 658 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 659 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 660
592 slot->defav = GvAV (PL_defgv); 661 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 662 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 663 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 664 slot->irsgv = GvSV (irsgv);
665 slot->hinthv = GvHV (PL_hintgv);
596 666
597 #define VAR(name,type) slot->name = PL_ ## name; 667 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 668 # include "state.h"
599 #undef VAR 669 #undef VAR
600 } 670 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 675 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 676 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 677 * not usually need a lot of stackspace.
608 */ 678 */
609#if CORO_PREFER_PERL_FUNCTIONS 679#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 680# define coro_init_stacks(thx) init_stacks ()
611#else 681#else
612static void 682static void
613coro_init_stacks (pTHX) 683coro_init_stacks (pTHX)
614{ 684{
615 PL_curstackinfo = new_stackinfo(32, 8); 685 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 748#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 749 Safefree (PL_retstack);
680#endif 750#endif
681} 751}
682 752
753#define CORO_RSS \
754 rss += sizeof (SYM (curstackinfo)); \
755 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
756 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
757 rss += SYM (tmps_max) * sizeof (SV *); \
758 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
759 rss += SYM (scopestack_max) * sizeof (I32); \
760 rss += SYM (savestack_max) * sizeof (ANY);
761
683static size_t 762static size_t
684coro_rss (pTHX_ struct coro *coro) 763coro_rss (pTHX_ struct coro *coro)
685{ 764{
686 size_t rss = sizeof (*coro); 765 size_t rss = sizeof (*coro);
687 766
688 if (coro->mainstack) 767 if (coro->mainstack)
689 { 768 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 769 if (coro->flags & CF_RUNNING)
694 { 770 {
695 slot = &tmp_slot; 771 #define SYM(sym) PL_ ## sym
696 772 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 773 #undef SYM
700 } 774 }
701 else 775 else
702 slot = coro->slot;
703
704 if (slot)
705 { 776 {
706 rss += sizeof (slot->curstackinfo); 777 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 778 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 779 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 780 }
718 } 781 }
719 782
720 return rss; 783 return rss;
721} 784}
… …
734#endif 797#endif
735 798
736/* 799/*
737 * This overrides the default magic get method of %SIG elements. 800 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 801 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide 802 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 803 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 804 */
745static int 805static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 806coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 807{
748 const char *s = MgPV_nolen_const (mg); 808 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 861 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 862
803 if (svp) 863 if (svp)
804 { 864 {
805 SV *old = *svp; 865 SV *old = *svp;
806 *svp = newSVsv (sv); 866 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 867 SvREFCNT_dec (old);
808 return 0; 868 return 0;
809 } 869 }
810 } 870 }
811 871
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 883slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 884{
825 return 0; 885 return 0;
826} 886}
827 887
828static void 888static int
889slf_check_repeat (pTHX_ struct CoroSLF *frame)
890{
891 return 1;
892}
893
894static UNOP coro_setup_op;
895
896static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 897coro_setup (pTHX_ struct coro *coro)
830{ 898{
831 /* 899 /*
832 * emulate part of the perl startup here. 900 * emulate part of the perl startup here.
833 */ 901 */
… …
835 903
836 PL_runops = RUNOPS_DEFAULT; 904 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 905 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 906 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 907 PL_comppad = 0;
908 PL_comppad_name = 0;
909 PL_comppad_name_fill = 0;
910 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 911 PL_curpm = 0;
841 PL_curpad = 0; 912 PL_curpad = 0;
842 PL_localizing = 0; 913 PL_localizing = 0;
843 PL_dirty = 0; 914 PL_dirty = 0;
844 PL_restartop = 0; 915 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 916#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 917 PL_parser = 0;
847#endif 918#endif
919 PL_hints = 0;
848 920
849 /* recreate the die/warn hooks */ 921 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 922 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 923 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 924
853 GvSV (PL_defgv) = newSV (0); 925 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 926 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 927 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 928 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
929 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 930 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 931 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 932
860 { 933 {
861 dSP; 934 dSP;
862 UNOP myop; 935 UNOP myop;
863 936
864 Zero (&myop, 1, UNOP); 937 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 938 myop.op_next = Nullop;
939 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 940 myop.op_flags = OPf_WANT_VOID;
867 941
868 PUSHMARK (SP); 942 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 943 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 944 PUTBACK;
871 PL_op = (OP *)&myop; 945 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 946 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 947 }
875 948
876 /* this newly created coroutine might be run on an existing cctx which most 949 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 950 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 951 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 952 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 953 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 954
955 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
956 coro_setup_op.op_next = PL_op;
957 coro_setup_op.op_type = OP_ENTERSUB;
958 coro_setup_op.op_ppaddr = pp_slf;
959 /* no flags etc. required, as an init function won't be called */
960
961 PL_op = (OP *)&coro_setup_op;
962
963 /* copy throw, in case it was set before coro_setup */
964 CORO_THROW = coro->except;
965}
966
883static void 967static void
884coro_destruct (pTHX_ struct coro *coro) 968coro_unwind_stacks (pTHX)
885{ 969{
886 if (!IN_DESTRUCT) 970 if (!IN_DESTRUCT)
887 { 971 {
888 /* restore all saved variables and stuff */ 972 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 973 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 981 POPSTACK_TO (PL_mainstack);
898 982
899 /* unwind main stack */ 983 /* unwind main stack */
900 dounwind (-1); 984 dounwind (-1);
901 } 985 }
986}
987
988static void
989coro_destruct_perl (pTHX_ struct coro *coro)
990{
991 coro_unwind_stacks (aTHX);
902 992
903 SvREFCNT_dec (GvSV (PL_defgv)); 993 SvREFCNT_dec (GvSV (PL_defgv));
904 SvREFCNT_dec (GvAV (PL_defgv)); 994 SvREFCNT_dec (GvAV (PL_defgv));
905 SvREFCNT_dec (GvSV (PL_errgv)); 995 SvREFCNT_dec (GvSV (PL_errgv));
906 SvREFCNT_dec (PL_defoutgv); 996 SvREFCNT_dec (PL_defoutgv);
907 SvREFCNT_dec (PL_rs); 997 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv)); 998 SvREFCNT_dec (GvSV (irsgv));
999 SvREFCNT_dec (GvHV (PL_hintgv));
909 1000
910 SvREFCNT_dec (PL_diehook); 1001 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 1002 SvREFCNT_dec (PL_warnhook);
912 1003
913 SvREFCNT_dec (coro->saved_deffh); 1004 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1005 SvREFCNT_dec (coro->rouse_cb);
1006 SvREFCNT_dec (coro->invoke_cb);
1007 SvREFCNT_dec (coro->invoke_av);
915 1008
916 coro_destruct_stacks (aTHX); 1009 coro_destruct_stacks (aTHX);
917} 1010}
918 1011
919INLINE void 1012INLINE void
… …
929static int 1022static int
930runops_trace (pTHX) 1023runops_trace (pTHX)
931{ 1024{
932 COP *oldcop = 0; 1025 COP *oldcop = 0;
933 int oldcxix = -2; 1026 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1027
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1028 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1029 {
939 PERL_ASYNC_CHECK (); 1030 PERL_ASYNC_CHECK ();
940 1031
941 if (cctx->flags & CC_TRACE_ALL) 1032 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1033 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1034 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1035 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1036 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1037 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1038 AV *av = newAV (); /* return values */
948 SV **cb; 1039 SV **cb;
… …
985 1076
986 if (PL_curcop != &PL_compiling) 1077 if (PL_curcop != &PL_compiling)
987 { 1078 {
988 SV **cb; 1079 SV **cb;
989 1080
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1081 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1082 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1083 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1084
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1085 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1086 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1087 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1088 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1089 SV *fullname = sv_2mortal (newSV (0));
1000 1090
1001 if (isGV (gv)) 1091 if (isGV (gv))
… …
1006 SAVETMPS; 1096 SAVETMPS;
1007 EXTEND (SP, 3); 1097 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1098 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1099 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1100 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1101 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1102 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1103 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1104 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1105 SPAGAIN;
1016 FREETMPS; 1106 FREETMPS;
… …
1019 } 1109 }
1020 1110
1021 oldcxix = cxstack_ix; 1111 oldcxix = cxstack_ix;
1022 } 1112 }
1023 1113
1024 if (cctx->flags & CC_TRACE_LINE) 1114 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1115 {
1026 dSP; 1116 dSP;
1027 1117
1028 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1119 ENTER;
… …
1048 1138
1049 TAINT_NOT; 1139 TAINT_NOT;
1050 return 0; 1140 return 0;
1051} 1141}
1052 1142
1143static struct CoroSLF cctx_ssl_frame;
1144
1053static void 1145static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1146slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1147{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1148 ta->prev = 0;
1058} 1149}
1059 1150
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1151static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1152slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1153{
1063/* also initialises PL_top_env */ 1154 *frame = cctx_ssl_frame;
1155
1156 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1157}
1158
1159/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1160static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1161cctx_prepare (pTHX)
1066{ 1162{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1163 PL_top_env = &PL_start_env;
1071 1164
1072 if (cctx->flags & CC_TRACE) 1165 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1166 PL_runops = runops_trace;
1074 1167
1075 Zero (&myop, 1, UNOP); 1168 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1169 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1170 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1171 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1172
1079 PUSHMARK (SP); 1173 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1174 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1175
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1176 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1177 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1178}
1088 1179
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1180/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1181INLINE void
1091transfer_tail (pTHX) 1182transfer_tail (pTHX)
1092{ 1183{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1184 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1185}
1109 1186
1110/* 1187/*
1111 * this is a _very_ stripped down perl interpreter ;) 1188 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1189 */
… …
1124 /* normally we would need to skip the entersub here */ 1201 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1202 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1203 /* PL_nop = PL_nop->op_next */
1127 1204
1128 /* inject a fake subroutine call to cctx_init */ 1205 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1206 cctx_prepare (aTHX);
1130 1207
1131 /* cctx_run is the alternative tail of transfer() */ 1208 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1209 transfer_tail (aTHX);
1134 1210
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1211 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1212 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1213 perl_run (PL_curinterp);
1214 /*
1215 * Unfortunately, there is no way to get at the return values of the
1216 * coro body here, as perl_run destroys these
1217 */
1138 1218
1139 /* 1219 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1220 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1221 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1222 * reason for perl_run to return. We try to exit by jumping to the
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1223 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1224 * coroutine as Coro has no such concept.
1225 * This actually isn't valid with the pthread backend, but OSes requiring
1226 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1227 */
1146 PL_top_env = main_top_env; 1228 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1229 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1230 }
1149} 1231}
… …
1226cctx_destroy (coro_cctx *cctx) 1308cctx_destroy (coro_cctx *cctx)
1227{ 1309{
1228 if (!cctx) 1310 if (!cctx)
1229 return; 1311 return;
1230 1312
1313 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1314
1231 --cctx_count; 1315 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1316 coro_destroy (&cctx->cctx);
1233 1317
1234 /* coro_transfer creates new, empty cctx's */ 1318 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1319 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1377/** coroutine switching *****************************************************/
1294 1378
1295static void 1379static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1380transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1381{
1382 /* TODO: throwing up here is considered harmful */
1383
1298 if (expect_true (prev != next)) 1384 if (expect_true (prev != next))
1299 { 1385 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1386 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1387 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1302 1388
1303 if (expect_false (next->flags & CF_RUNNING)) 1389 if (expect_false (next->flags & CF_RUNNING))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1390 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305 1391
1306 if (expect_false (next->flags & CF_DESTROYED)) 1392 if (expect_false (next->flags & CF_DESTROYED))
… …
1312#endif 1398#endif
1313 } 1399 }
1314} 1400}
1315 1401
1316/* always use the TRANSFER macro */ 1402/* always use the TRANSFER macro */
1317static void NOINLINE 1403static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1404transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1405{
1320 dSTACKLEVEL; 1406 dSTACKLEVEL;
1321 1407
1322 /* sometimes transfer is only called to set idle_sp */ 1408 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1409 if (expect_false (!prev))
1324 { 1410 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1411 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1412 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1413 }
1328 else if (expect_true (prev != next)) 1414 else if (expect_true (prev != next))
1329 { 1415 {
1330 coro_cctx *prev__cctx; 1416 coro_cctx *cctx_prev;
1331 1417
1332 if (expect_false (prev->flags & CF_NEW)) 1418 if (expect_false (prev->flags & CF_NEW))
1333 { 1419 {
1334 /* create a new empty/source context */ 1420 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1421 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1422 prev->flags |= CF_RUNNING;
1338 } 1423 }
1339 1424
1340 prev->flags &= ~CF_RUNNING; 1425 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1426 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1427
1345 /* first get rid of the old state */ 1428 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1429 save_perl (aTHX_ prev);
1347 1430
1348 if (expect_false (next->flags & CF_NEW)) 1431 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1436 coro_setup (aTHX_ next);
1354 } 1437 }
1355 else 1438 else
1356 load_perl (aTHX_ next); 1439 load_perl (aTHX_ next);
1357 1440
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1441 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1442 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1443 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1444 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1445 && !force_cctx
1365 )) 1446 ))
1366 { 1447 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1448 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1449 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1450
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1451 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1452 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1453 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1454 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1455 next->cctx = cctx_get (aTHX);
1377 1456
1378 cctx_put (prev__cctx); 1457 cctx_put (cctx_current);
1379 } 1458 }
1459 else
1460 prev->cctx = cctx_current;
1380 1461
1381 ++next->usecount; 1462 ++next->usecount;
1382 1463
1383 if (expect_true (!next->cctx)) 1464 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1465 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1466
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1467 next->cctx = 0;
1387 transfer_next = next;
1388 1468
1389 if (expect_false (prev__cctx != next->cctx)) 1469 if (expect_false (cctx_prev != cctx_current))
1390 { 1470 {
1391 prev__cctx->top_env = PL_top_env; 1471 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1472 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1473 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1474 }
1395 1475
1396 transfer_tail (aTHX); 1476 transfer_tail (aTHX);
1397 } 1477 }
1398} 1478}
… …
1405static int 1485static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1486coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1487{
1408 if (coro->flags & CF_DESTROYED) 1488 if (coro->flags & CF_DESTROYED)
1409 return 0; 1489 return 0;
1490
1491 if (coro->on_destroy)
1492 coro->on_destroy (aTHX_ coro);
1410 1493
1411 coro->flags |= CF_DESTROYED; 1494 coro->flags |= CF_DESTROYED;
1412 1495
1413 if (coro->flags & CF_READY) 1496 if (coro->flags & CF_READY)
1414 { 1497 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1498 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1499 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1500 --coro_nready;
1419 UNLOCK;
1420 } 1501 }
1421 else 1502 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1503 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1504
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1505 if (coro->mainstack
1506 && coro->mainstack != main_mainstack
1507 && coro->slot
1508 && !PL_dirty)
1425 { 1509 {
1426 struct coro temp; 1510 struct coro *current = SvSTATE_current;
1427 1511
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1512 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1429 1513
1430 save_perl (aTHX_ &temp); 1514 save_perl (aTHX_ current);
1431 load_perl (aTHX_ coro); 1515 load_perl (aTHX_ coro);
1432 1516
1433 coro_destruct (aTHX_ coro); 1517 coro_destruct_perl (aTHX_ coro);
1434 1518
1435 load_perl (aTHX_ &temp); 1519 load_perl (aTHX_ current);
1436 1520
1437 coro->slot = 0; 1521 coro->slot = 0;
1438 } 1522 }
1439 1523
1440 cctx_destroy (coro->cctx); 1524 cctx_destroy (coro->cctx);
1525 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1526 SvREFCNT_dec (coro->args);
1527 SvREFCNT_dec (CORO_THROW);
1442 1528
1443 if (coro->next) coro->next->prev = coro->prev; 1529 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1530 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1531 if (coro == coro_first) coro_first = coro->next;
1446 1532
… …
1500 1586
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1587 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1588 TRANSFER (ta, 1);
1503} 1589}
1504 1590
1591/*****************************************************************************/
1592/* gensub: simple closure generation utility */
1593
1594#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1595
1596/* create a closure from XS, returns a code reference */
1597/* the arg can be accessed via GENSUB_ARG from the callback */
1598/* the callback must use dXSARGS/XSRETURN */
1599static SV *
1600gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1601{
1602 CV *cv = (CV *)newSV (0);
1603
1604 sv_upgrade ((SV *)cv, SVt_PVCV);
1605
1606 CvANON_on (cv);
1607 CvISXSUB_on (cv);
1608 CvXSUB (cv) = xsub;
1609 GENSUB_ARG = arg;
1610
1611 return newRV_noinc ((SV *)cv);
1612}
1613
1505/** Coro ********************************************************************/ 1614/** Coro ********************************************************************/
1506 1615
1507static void 1616INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1617coro_enq (pTHX_ struct coro *coro)
1509{ 1618{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1619 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1620}
1512 1621
1513static SV * 1622INLINE SV *
1514coro_deq (pTHX) 1623coro_deq (pTHX)
1515{ 1624{
1516 int prio; 1625 int prio;
1517 1626
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1627 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1527{ 1636{
1528 struct coro *coro; 1637 struct coro *coro;
1529 SV *sv_hook; 1638 SV *sv_hook;
1530 void (*xs_hook)(void); 1639 void (*xs_hook)(void);
1531 1640
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1641 coro = SvSTATE (coro_sv);
1536 1642
1537 if (coro->flags & CF_READY) 1643 if (coro->flags & CF_READY)
1538 return 0; 1644 return 0;
1539 1645
1540 coro->flags |= CF_READY; 1646 coro->flags |= CF_READY;
1541 1647
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1648 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1649 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1650
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1651 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1652 ++coro_nready;
1549 1653
1550 UNLOCK;
1551
1552 if (sv_hook) 1654 if (sv_hook)
1553 { 1655 {
1554 dSP; 1656 dSP;
1555 1657
1556 ENTER; 1658 ENTER;
1557 SAVETMPS; 1659 SAVETMPS;
1558 1660
1559 PUSHMARK (SP); 1661 PUSHMARK (SP);
1560 PUTBACK; 1662 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1663 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1664
1564 FREETMPS; 1665 FREETMPS;
1565 LEAVE; 1666 LEAVE;
1566 } 1667 }
1567 1668
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1676api_is_ready (pTHX_ SV *coro_sv)
1576{ 1677{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1678 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1679}
1579 1680
1681/* expects to own a reference to next->hv */
1580INLINE void 1682INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1683prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1684{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1685 SV *prev_sv = SvRV (coro_current);
1686
1627 ta->prev = SvSTATE (prev_sv); 1687 ta->prev = SvSTATE_hv (prev_sv);
1688 ta->next = next;
1689
1628 TRANSFER_CHECK (*ta); 1690 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1691
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1692 SvRV_set (coro_current, (SV *)next->hv);
1632 1693
1633 LOCK;
1634 free_coro_mortal (aTHX); 1694 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1695 coro_mortal = prev_sv;
1636 UNLOCK; 1696}
1697
1698static void
1699prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1700{
1701 for (;;)
1702 {
1703 SV *next_sv = coro_deq (aTHX);
1704
1705 if (expect_true (next_sv))
1706 {
1707 struct coro *next = SvSTATE_hv (next_sv);
1708
1709 /* cannot transfer to destroyed coros, skip and look for next */
1710 if (expect_false (next->flags & CF_DESTROYED))
1711 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1712 else
1713 {
1714 next->flags &= ~CF_READY;
1715 --coro_nready;
1716
1717 prepare_schedule_to (aTHX_ ta, next);
1718 break;
1719 }
1720 }
1721 else
1722 {
1723 /* nothing to schedule: call the idle handler */
1724 if (SvROK (sv_idle)
1725 && SvOBJECT (SvRV (sv_idle)))
1726 {
1727 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1728 api_ready (aTHX_ SvRV (sv_idle));
1729 --coro_nready;
1730 }
1731 else
1732 {
1733 dSP;
1734
1735 ENTER;
1736 SAVETMPS;
1737
1738 PUSHMARK (SP);
1739 PUTBACK;
1740 call_sv (sv_idle, G_VOID | G_DISCARD);
1741
1742 FREETMPS;
1743 LEAVE;
1744 }
1745 }
1746 }
1637} 1747}
1638 1748
1639INLINE void 1749INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1750prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1751{
… …
1662{ 1772{
1663 struct coro_transfer_args ta; 1773 struct coro_transfer_args ta;
1664 1774
1665 prepare_schedule (aTHX_ &ta); 1775 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1776 TRANSFER (ta, 1);
1777}
1778
1779static void
1780api_schedule_to (pTHX_ SV *coro_sv)
1781{
1782 struct coro_transfer_args ta;
1783 struct coro *next = SvSTATE (coro_sv);
1784
1785 SvREFCNT_inc_NN (coro_sv);
1786 prepare_schedule_to (aTHX_ &ta, next);
1667} 1787}
1668 1788
1669static int 1789static int
1670api_cede (pTHX) 1790api_cede (pTHX)
1671{ 1791{
… …
1700static void 1820static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1821api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1822{
1703 struct coro *coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1704 1824
1825 if (coro->flags & CF_RUNNING)
1826 croak ("cannot enable tracing on a running coroutine, caught");
1827
1705 if (flags & CC_TRACE) 1828 if (flags & CC_TRACE)
1706 { 1829 {
1707 if (!coro->cctx) 1830 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1831 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1832 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1833 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1834
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1835 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1836 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1837 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1838 {
… …
1720 else 1843 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1844 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1845 }
1723} 1846}
1724 1847
1725#if 0 1848static void
1849coro_call_on_destroy (pTHX_ struct coro *coro)
1850{
1851 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1852 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1853
1854 if (on_destroyp)
1855 {
1856 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1857
1858 while (AvFILLp (on_destroy) >= 0)
1859 {
1860 dSP; /* don't disturb outer sp */
1861 SV *cb = av_pop (on_destroy);
1862
1863 PUSHMARK (SP);
1864
1865 if (statusp)
1866 {
1867 int i;
1868 AV *status = (AV *)SvRV (*statusp);
1869 EXTEND (SP, AvFILLp (status) + 1);
1870
1871 for (i = 0; i <= AvFILLp (status); ++i)
1872 PUSHs (AvARRAY (status)[i]);
1873 }
1874
1875 PUTBACK;
1876 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1877 }
1878 }
1879}
1880
1881static void
1882slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883{
1884 int i;
1885 HV *hv = (HV *)SvRV (coro_current);
1886 AV *av = newAV ();
1887
1888 av_extend (av, items - 1);
1889 for (i = 0; i < items; ++i)
1890 av_push (av, SvREFCNT_inc_NN (arg [i]));
1891
1892 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1893
1894 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1895 api_ready (aTHX_ sv_manager);
1896
1897 frame->prepare = prepare_schedule;
1898 frame->check = slf_check_repeat;
1899
1900 /* as a minor optimisation, we could unwind all stacks here */
1901 /* but that puts extra pressure on pp_slf, and is not worth much */
1902 /*coro_unwind_stacks (aTHX);*/
1903}
1904
1905/*****************************************************************************/
1906/* async pool handler */
1907
1726static int 1908static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1909slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1910{
1729 AV *padlist; 1911 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1912 struct coro *coro = (struct coro *)frame->data;
1731 1913
1732 abort (); 1914 if (!coro->invoke_cb)
1915 return 1; /* loop till we have invoke */
1916 else
1917 {
1918 hv_store (hv, "desc", sizeof ("desc") - 1,
1919 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1920
1921 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1922
1923 {
1924 dSP;
1925 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1926 PUTBACK;
1927 }
1928
1929 SvREFCNT_dec (GvAV (PL_defgv));
1930 GvAV (PL_defgv) = coro->invoke_av;
1931 coro->invoke_av = 0;
1932
1933 return 0;
1934 }
1935}
1936
1937static void
1938slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1939{
1940 HV *hv = (HV *)SvRV (coro_current);
1941 struct coro *coro = SvSTATE_hv ((SV *)hv);
1942
1943 if (expect_true (coro->saved_deffh))
1944 {
1945 /* subsequent iteration */
1946 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1947 coro->saved_deffh = 0;
1948
1949 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1950 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1951 {
1952 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1953 coro->invoke_av = newAV ();
1954
1955 frame->prepare = prepare_nop;
1956 }
1957 else
1958 {
1959 av_clear (GvAV (PL_defgv));
1960 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1961
1962 coro->prio = 0;
1963
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (aTHX_ coro_current, 0);
1966
1967 frame->prepare = prepare_schedule;
1968 av_push (av_async_pool, SvREFCNT_inc (hv));
1969 }
1970 }
1971 else
1972 {
1973 /* first iteration, simply fall through */
1974 frame->prepare = prepare_nop;
1975 }
1976
1977 frame->check = slf_check_pool_handler;
1978 frame->data = (void *)coro;
1979}
1980
1981/*****************************************************************************/
1982/* rouse callback */
1983
1984#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1985
1986static void
1987coro_rouse_callback (pTHX_ CV *cv)
1988{
1989 dXSARGS;
1990 SV *data = (SV *)GENSUB_ARG;
1991
1992 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1993 {
1994 /* first call, set args */
1995 AV *av = newAV ();
1996 SV *coro = SvRV (data);
1997
1998 SvRV_set (data, (SV *)av);
1999 api_ready (aTHX_ coro);
2000 SvREFCNT_dec (coro);
2001
2002 /* better take a full copy of the arguments */
2003 while (items--)
2004 av_store (av, items, newSVsv (ST (items)));
2005 }
2006
2007 XSRETURN_EMPTY;
2008}
2009
2010static int
2011slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2012{
2013 SV *data = (SV *)frame->data;
2014
2015 if (CORO_THROW)
2016 return 0;
2017
2018 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2019 return 1;
2020
2021 /* now push all results on the stack */
2022 {
2023 dSP;
2024 AV *av = (AV *)SvRV (data);
2025 int i;
2026
2027 EXTEND (SP, AvFILLp (av) + 1);
2028 for (i = 0; i <= AvFILLp (av); ++i)
2029 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2030
2031 /* we have stolen the elements, so ste length to zero and free */
2032 AvFILLp (av) = -1;
2033 av_undef (av);
2034
2035 PUTBACK;
2036 }
1733 2037
1734 return 0; 2038 return 0;
1735} 2039}
1736 2040
1737static MGVTBL coro_gensub_vtbl = { 2041static void
1738 0, 0, 0, 0, 2042slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2043{
1740}; 2044 SV *cb;
1741#endif 2045
2046 if (items)
2047 cb = arg [0];
2048 else
2049 {
2050 struct coro *coro = SvSTATE_current;
2051
2052 if (!coro->rouse_cb)
2053 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2054
2055 cb = sv_2mortal (coro->rouse_cb);
2056 coro->rouse_cb = 0;
2057 }
2058
2059 if (!SvROK (cb)
2060 || SvTYPE (SvRV (cb)) != SVt_PVCV
2061 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2062 croak ("Coro::rouse_wait called with illegal callback argument,");
2063
2064 {
2065 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2066 SV *data = (SV *)GENSUB_ARG;
2067
2068 frame->data = (void *)data;
2069 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2070 frame->check = slf_check_rouse_wait;
2071 }
2072}
2073
2074static SV *
2075coro_new_rouse_cb (pTHX)
2076{
2077 HV *hv = (HV *)SvRV (coro_current);
2078 struct coro *coro = SvSTATE_hv (hv);
2079 SV *data = newRV_inc ((SV *)hv);
2080 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2081
2082 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2083 SvREFCNT_dec (data); /* magicext increases the refcount */
2084
2085 SvREFCNT_dec (coro->rouse_cb);
2086 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2087
2088 return cb;
2089}
2090
2091/*****************************************************************************/
2092/* schedule-like-function opcode (SLF) */
2093
2094static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2095static const CV *slf_cv;
2096static SV **slf_argv;
2097static int slf_argc, slf_arga; /* count, allocated */
2098static I32 slf_ax; /* top of stack, for restore */
2099
2100/* this restores the stack in the case we patched the entersub, to */
2101/* recreate the stack frame as perl will on following calls */
2102/* since entersub cleared the stack */
2103static OP *
2104pp_restore (pTHX)
2105{
2106 int i;
2107 SV **SP = PL_stack_base + slf_ax;
2108
2109 PUSHMARK (SP);
2110
2111 EXTEND (SP, slf_argc + 1);
2112
2113 for (i = 0; i < slf_argc; ++i)
2114 PUSHs (sv_2mortal (slf_argv [i]));
2115
2116 PUSHs ((SV *)CvGV (slf_cv));
2117
2118 RETURNOP (slf_restore.op_first);
2119}
2120
2121static void
2122slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2123{
2124 SV **arg = (SV **)slf_frame.data;
2125
2126 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2127}
2128
2129static void
2130slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 if (items != 2)
2133 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2134
2135 frame->prepare = slf_prepare_transfer;
2136 frame->check = slf_check_nop;
2137 frame->data = (void *)arg; /* let's hope it will stay valid */
2138}
2139
2140static void
2141slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_schedule;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2149{
2150 struct coro *next = (struct coro *)slf_frame.data;
2151
2152 SvREFCNT_inc_NN (next->hv);
2153 prepare_schedule_to (aTHX_ ta, next);
2154}
2155
2156static void
2157slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2158{
2159 if (!items)
2160 croak ("Coro::schedule_to expects a coroutine argument, caught");
2161
2162 frame->data = (void *)SvSTATE (arg [0]);
2163 frame->prepare = slf_prepare_schedule_to;
2164 frame->check = slf_check_nop;
2165}
2166
2167static void
2168slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 api_ready (aTHX_ SvRV (coro_current));
2171
2172 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2173}
2174
2175static void
2176slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_cede;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 frame->prepare = prepare_cede_notself;
2186 frame->check = slf_check_nop;
2187}
2188
2189/*
2190 * these not obviously related functions are all rolled into one
2191 * function to increase chances that they all will call transfer with the same
2192 * stack offset
2193 * SLF stands for "schedule-like-function".
2194 */
2195static OP *
2196pp_slf (pTHX)
2197{
2198 I32 checkmark; /* mark SP to see how many elements check has pushed */
2199
2200 /* set up the slf frame, unless it has already been set-up */
2201 /* the latter happens when a new coro has been started */
2202 /* or when a new cctx was attached to an existing coroutine */
2203 if (expect_true (!slf_frame.prepare))
2204 {
2205 /* first iteration */
2206 dSP;
2207 SV **arg = PL_stack_base + TOPMARK + 1;
2208 int items = SP - arg; /* args without function object */
2209 SV *gv = *sp;
2210
2211 /* do a quick consistency check on the "function" object, and if it isn't */
2212 /* for us, divert to the real entersub */
2213 if (SvTYPE (gv) != SVt_PVGV
2214 || !GvCV (gv)
2215 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2216 return PL_ppaddr[OP_ENTERSUB](aTHX);
2217
2218 if (!(PL_op->op_flags & OPf_STACKED))
2219 {
2220 /* ampersand-form of call, use @_ instead of stack */
2221 AV *av = GvAV (PL_defgv);
2222 arg = AvARRAY (av);
2223 items = AvFILLp (av) + 1;
2224 }
2225
2226 /* now call the init function, which needs to set up slf_frame */
2227 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2228 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2229
2230 /* pop args */
2231 SP = PL_stack_base + POPMARK;
2232
2233 PUTBACK;
2234 }
2235
2236 /* now that we have a slf_frame, interpret it! */
2237 /* we use a callback system not to make the code needlessly */
2238 /* complicated, but so we can run multiple perl coros from one cctx */
2239
2240 do
2241 {
2242 struct coro_transfer_args ta;
2243
2244 slf_frame.prepare (aTHX_ &ta);
2245 TRANSFER (ta, 0);
2246
2247 checkmark = PL_stack_sp - PL_stack_base;
2248 }
2249 while (slf_frame.check (aTHX_ &slf_frame));
2250
2251 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2252
2253 /* exception handling */
2254 if (expect_false (CORO_THROW))
2255 {
2256 SV *exception = sv_2mortal (CORO_THROW);
2257
2258 CORO_THROW = 0;
2259 sv_setsv (ERRSV, exception);
2260 croak (0);
2261 }
2262
2263 /* return value handling - mostly like entersub */
2264 /* make sure we put something on the stack in scalar context */
2265 if (GIMME_V == G_SCALAR)
2266 {
2267 dSP;
2268 SV **bot = PL_stack_base + checkmark;
2269
2270 if (sp == bot) /* too few, push undef */
2271 bot [1] = &PL_sv_undef;
2272 else if (sp != bot + 1) /* too many, take last one */
2273 bot [1] = *sp;
2274
2275 SP = bot + 1;
2276
2277 PUTBACK;
2278 }
2279
2280 return NORMAL;
2281}
2282
2283static void
2284api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2285{
2286 int i;
2287 SV **arg = PL_stack_base + ax;
2288 int items = PL_stack_sp - arg + 1;
2289
2290 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2291
2292 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2293 && PL_op->op_ppaddr != pp_slf)
2294 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2295
2296 CvFLAGS (cv) |= CVf_SLF;
2297 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2298 slf_cv = cv;
2299
2300 /* we patch the op, and then re-run the whole call */
2301 /* we have to put the same argument on the stack for this to work */
2302 /* and this will be done by pp_restore */
2303 slf_restore.op_next = (OP *)&slf_restore;
2304 slf_restore.op_type = OP_CUSTOM;
2305 slf_restore.op_ppaddr = pp_restore;
2306 slf_restore.op_first = PL_op;
2307
2308 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2309
2310 if (PL_op->op_flags & OPf_STACKED)
2311 {
2312 if (items > slf_arga)
2313 {
2314 slf_arga = items;
2315 free (slf_argv);
2316 slf_argv = malloc (slf_arga * sizeof (SV *));
2317 }
2318
2319 slf_argc = items;
2320
2321 for (i = 0; i < items; ++i)
2322 slf_argv [i] = SvREFCNT_inc (arg [i]);
2323 }
2324 else
2325 slf_argc = 0;
2326
2327 PL_op->op_ppaddr = pp_slf;
2328 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2329
2330 PL_op = (OP *)&slf_restore;
2331}
2332
2333/*****************************************************************************/
2334/* dynamic wind */
2335
2336static void
2337on_enterleave_call (pTHX_ SV *cb)
2338{
2339 dSP;
2340
2341 PUSHSTACK;
2342
2343 PUSHMARK (SP);
2344 PUTBACK;
2345 call_sv (cb, G_VOID | G_DISCARD);
2346 SPAGAIN;
2347
2348 POPSTACK;
2349}
2350
2351static SV *
2352coro_avp_pop_and_free (AV **avp)
2353{
2354 AV *av = *avp;
2355 SV *res = av_pop (av);
2356
2357 if (AvFILLp (av) < 0)
2358 {
2359 *avp = 0;
2360 SvREFCNT_dec (av);
2361 }
2362
2363 return res;
2364}
2365
2366static void
2367coro_pop_on_enter (pTHX_ void *coro)
2368{
2369 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_enter);
2370 SvREFCNT_dec (cb);
2371}
2372
2373static void
2374coro_pop_on_leave (pTHX_ void *coro)
2375{
2376 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_leave);
2377 on_enterleave_call (sv_2mortal (cb));
2378}
1742 2379
1743/*****************************************************************************/ 2380/*****************************************************************************/
1744/* PerlIO::cede */ 2381/* PerlIO::cede */
1745 2382
1746typedef struct 2383typedef struct
… …
1814 PerlIOBuf_get_cnt, 2451 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2452 PerlIOBuf_set_ptrcnt,
1816}; 2453};
1817 2454
1818/*****************************************************************************/ 2455/*****************************************************************************/
2456/* Coro::Semaphore & Coro::Signal */
1819 2457
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2458static SV *
1831pp_restore (pTHX) 2459coro_waitarray_new (pTHX_ int count)
1832{ 2460{
1833 dSP; 2461 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2462 AV *av = newAV ();
2463 SV **ary;
1834 2464
1835 PUSHMARK (SP); 2465 /* unfortunately, building manually saves memory */
2466 Newx (ary, 2, SV *);
2467 AvALLOC (av) = ary;
2468#if PERL_VERSION_ATLEAST (5,10,0)
2469 AvARRAY (av) = ary;
2470#else
2471 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2472 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2473 SvPVX ((SV *)av) = (char *)ary;
2474#endif
2475 AvMAX (av) = 1;
2476 AvFILLp (av) = 0;
2477 ary [0] = newSViv (count);
1836 2478
1837 EXTEND (SP, 3); 2479 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2480}
1845 2481
1846static void 2482/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2483
1852static void 2484static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2485coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2486{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2487 SV *count_sv = AvARRAY (av)[0];
2488 IV count = SvIVX (count_sv);
1856 2489
1857 frame->prepare = slf_prepare_set_stacklevel; 2490 count += adjust;
1858 frame->check = slf_check_nop; 2491 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2492
1862static void 2493 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2494 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2495 {
1921 /* first iteration */ 2496 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2497
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2498 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2499 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2500 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2501 cb = av_shift (av);
1931 2502
1932 /* pop args */ 2503 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2504 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2505 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2506 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2507 }
1942 2508 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2509 {
1973 if (sp == bot) 2510 dSP;
1974 XPUSHs (&PL_sv_undef); 2511 PUSHMARK (SP);
1975 2512 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2513 PUTBACK;
2514 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2515 }
1978 2516
1979 PUTBACK; 2517 SvREFCNT_dec (cb);
1980 } 2518 }
1981
1982 return NORMAL;
1983} 2519}
1984 2520
1985static void 2521static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2522coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2523{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2524 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2525 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2526}
2017
2018/*****************************************************************************/
2019 2527
2020static int 2528static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2529slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2530{
2023 AV *av = (AV *)frame->data; 2531 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2532 SV *count_sv = AvARRAY (av)[0];
2025 2533
2534 /* if we are about to throw, don't actually acquire the lock, just throw */
2535 if (CORO_THROW)
2536 return 0;
2026 if (SvIVX (count_sv) > 0) 2537 else if (SvIVX (count_sv) > 0)
2027 { 2538 {
2539 SvSTATE_current->on_destroy = 0;
2540
2541 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2542 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2543 else
2544 coro_semaphore_adjust (aTHX_ av, 0);
2545
2029 return 0; 2546 return 0;
2030 } 2547 }
2031 else 2548 else
2032 { 2549 {
2033 int i; 2550 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2559 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2560 return 1;
2044 } 2561 }
2045} 2562}
2046 2563
2047static void 2564static int
2565slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2566{
2567 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2568}
2569
2570static int
2571slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2572{
2573 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2574}
2575
2576static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2577slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2578{
2050 AV *av = (AV *)SvRV (arg [0]); 2579 AV *av = (AV *)SvRV (arg [0]);
2051 2580
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2581 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2582 {
… …
2058 { 2587 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2588 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2589
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2590 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2591 frame->prepare = prepare_schedule;
2063 }
2064 2592
2593 /* to avoid race conditions when a woken-up coro gets terminated */
2594 /* we arrange for a temporary on_destroy that calls adjust (0) */
2595 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2596 }
2597}
2598
2599static void
2600slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2601{
2602 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2603 frame->check = slf_check_semaphore_down;
2066
2067} 2604}
2605
2606static void
2607slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2608{
2609 if (items >= 2)
2610 {
2611 /* callback form */
2612 AV *av = (AV *)SvRV (arg [0]);
2613 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2614
2615 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2616
2617 if (SvIVX (AvARRAY (av)[0]) > 0)
2618 coro_semaphore_adjust (aTHX_ av, 0);
2619
2620 frame->prepare = prepare_nop;
2621 frame->check = slf_check_nop;
2622 }
2623 else
2624 {
2625 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2626 frame->check = slf_check_semaphore_wait;
2627 }
2628}
2629
2630/* signal */
2631
2632static void
2633coro_signal_wake (pTHX_ AV *av, int count)
2634{
2635 SvIVX (AvARRAY (av)[0]) = 0;
2636
2637 /* now signal count waiters */
2638 while (count > 0 && AvFILLp (av) > 0)
2639 {
2640 SV *cb;
2641
2642 /* swap first two elements so we can shift a waiter */
2643 cb = AvARRAY (av)[0];
2644 AvARRAY (av)[0] = AvARRAY (av)[1];
2645 AvARRAY (av)[1] = cb;
2646
2647 cb = av_shift (av);
2648
2649 api_ready (aTHX_ cb);
2650 sv_setiv (cb, 0); /* signal waiter */
2651 SvREFCNT_dec (cb);
2652
2653 --count;
2654 }
2655}
2656
2657static int
2658slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2659{
2660 /* if we are about to throw, also stop waiting */
2661 return SvROK ((SV *)frame->data) && !CORO_THROW;
2662}
2663
2664static void
2665slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2666{
2667 AV *av = (AV *)SvRV (arg [0]);
2668
2669 if (SvIVX (AvARRAY (av)[0]))
2670 {
2671 SvIVX (AvARRAY (av)[0]) = 0;
2672 frame->prepare = prepare_nop;
2673 frame->check = slf_check_nop;
2674 }
2675 else
2676 {
2677 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2678
2679 av_push (av, waiter);
2680
2681 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2682 frame->prepare = prepare_schedule;
2683 frame->check = slf_check_signal_wait;
2684 }
2685}
2686
2687/*****************************************************************************/
2688/* Coro::AIO */
2689
2690#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2691
2692/* helper storage struct */
2693struct io_state
2694{
2695 int errorno;
2696 I32 laststype; /* U16 in 5.10.0 */
2697 int laststatval;
2698 Stat_t statcache;
2699};
2700
2701static void
2702coro_aio_callback (pTHX_ CV *cv)
2703{
2704 dXSARGS;
2705 AV *state = (AV *)GENSUB_ARG;
2706 SV *coro = av_pop (state);
2707 SV *data_sv = newSV (sizeof (struct io_state));
2708
2709 av_extend (state, items - 1);
2710
2711 sv_upgrade (data_sv, SVt_PV);
2712 SvCUR_set (data_sv, sizeof (struct io_state));
2713 SvPOK_only (data_sv);
2714
2715 {
2716 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2717
2718 data->errorno = errno;
2719 data->laststype = PL_laststype;
2720 data->laststatval = PL_laststatval;
2721 data->statcache = PL_statcache;
2722 }
2723
2724 /* now build the result vector out of all the parameters and the data_sv */
2725 {
2726 int i;
2727
2728 for (i = 0; i < items; ++i)
2729 av_push (state, SvREFCNT_inc_NN (ST (i)));
2730 }
2731
2732 av_push (state, data_sv);
2733
2734 api_ready (aTHX_ coro);
2735 SvREFCNT_dec (coro);
2736 SvREFCNT_dec ((AV *)state);
2737}
2738
2739static int
2740slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2741{
2742 AV *state = (AV *)frame->data;
2743
2744 /* if we are about to throw, return early */
2745 /* this does not cancel the aio request, but at least */
2746 /* it quickly returns */
2747 if (CORO_THROW)
2748 return 0;
2749
2750 /* one element that is an RV? repeat! */
2751 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2752 return 1;
2753
2754 /* restore status */
2755 {
2756 SV *data_sv = av_pop (state);
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 errno = data->errorno;
2760 PL_laststype = data->laststype;
2761 PL_laststatval = data->laststatval;
2762 PL_statcache = data->statcache;
2763
2764 SvREFCNT_dec (data_sv);
2765 }
2766
2767 /* push result values */
2768 {
2769 dSP;
2770 int i;
2771
2772 EXTEND (SP, AvFILLp (state) + 1);
2773 for (i = 0; i <= AvFILLp (state); ++i)
2774 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2775
2776 PUTBACK;
2777 }
2778
2779 return 0;
2780}
2781
2782static void
2783slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2784{
2785 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2786 SV *coro_hv = SvRV (coro_current);
2787 struct coro *coro = SvSTATE_hv (coro_hv);
2788
2789 /* put our coroutine id on the state arg */
2790 av_push (state, SvREFCNT_inc_NN (coro_hv));
2791
2792 /* first see whether we have a non-zero priority and set it as AIO prio */
2793 if (coro->prio)
2794 {
2795 dSP;
2796
2797 static SV *prio_cv;
2798 static SV *prio_sv;
2799
2800 if (expect_false (!prio_cv))
2801 {
2802 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2803 prio_sv = newSViv (0);
2804 }
2805
2806 PUSHMARK (SP);
2807 sv_setiv (prio_sv, coro->prio);
2808 XPUSHs (prio_sv);
2809
2810 PUTBACK;
2811 call_sv (prio_cv, G_VOID | G_DISCARD);
2812 }
2813
2814 /* now call the original request */
2815 {
2816 dSP;
2817 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2818 int i;
2819
2820 PUSHMARK (SP);
2821
2822 /* first push all args to the stack */
2823 EXTEND (SP, items + 1);
2824
2825 for (i = 0; i < items; ++i)
2826 PUSHs (arg [i]);
2827
2828 /* now push the callback closure */
2829 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2830
2831 /* now call the AIO function - we assume our request is uncancelable */
2832 PUTBACK;
2833 call_sv ((SV *)req, G_VOID | G_DISCARD);
2834 }
2835
2836 /* now that the requets is going, we loop toll we have a result */
2837 frame->data = (void *)state;
2838 frame->prepare = prepare_schedule;
2839 frame->check = slf_check_aio_req;
2840}
2841
2842static void
2843coro_aio_req_xs (pTHX_ CV *cv)
2844{
2845 dXSARGS;
2846
2847 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2848
2849 XSRETURN_EMPTY;
2850}
2851
2852/*****************************************************************************/
2853
2854#if CORO_CLONE
2855# include "clone.c"
2856#endif
2068 2857
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2858MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2859
2071PROTOTYPES: DISABLE 2860PROTOTYPES: DISABLE
2072 2861
2073BOOT: 2862BOOT:
2074{ 2863{
2075#ifdef USE_ITHREADS 2864#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2865# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2866 coro_thx = PERL_GET_CONTEXT;
2079# endif 2867# endif
2080#endif 2868#endif
2081 BOOT_PAGESIZE; 2869 BOOT_PAGESIZE;
2870
2871 cctx_current = cctx_new_empty ();
2082 2872
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2873 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2874 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 2875
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2876 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 2891 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2892 main_top_env = PL_top_env;
2103 2893
2104 while (main_top_env->je_prev) 2894 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2895 main_top_env = main_top_env->je_prev;
2896
2897 {
2898 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2899
2900 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2901 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2902
2903 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2904 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2905 }
2106 2906
2107 coroapi.ver = CORO_API_VERSION; 2907 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2908 coroapi.rev = CORO_API_REVISION;
2109 2909
2110 coroapi.transfer = api_transfer; 2910 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2928 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2929}
2130 2930
2131SV * 2931SV *
2132new (char *klass, ...) 2932new (char *klass, ...)
2933 ALIAS:
2934 Coro::new = 1
2133 CODE: 2935 CODE:
2134{ 2936{
2135 struct coro *coro; 2937 struct coro *coro;
2136 MAGIC *mg; 2938 MAGIC *mg;
2137 HV *hv; 2939 HV *hv;
2940 CV *cb;
2138 int i; 2941 int i;
2942
2943 if (items > 1)
2944 {
2945 cb = coro_sv_2cv (aTHX_ ST (1));
2946
2947 if (!ix)
2948 {
2949 if (CvISXSUB (cb))
2950 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2951
2952 if (!CvROOT (cb))
2953 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2954 }
2955 }
2139 2956
2140 Newz (0, coro, 1, struct coro); 2957 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2958 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2959 coro->flags = CF_NEW;
2143 2960
… …
2148 coro->hv = hv = newHV (); 2965 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2966 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2967 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2968 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2969
2970 if (items > 1)
2971 {
2153 av_extend (coro->args, items - 1); 2972 av_extend (coro->args, items - 1 + ix - 1);
2973
2974 if (ix)
2975 {
2976 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2977 cb = cv_coro_run;
2978 }
2979
2980 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2981
2154 for (i = 1; i < items; i++) 2982 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2983 av_push (coro->args, newSVsv (ST (i)));
2984 }
2156} 2985}
2157 OUTPUT: 2986 OUTPUT:
2158 RETVAL 2987 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2988
2165void 2989void
2166transfer (...) 2990transfer (...)
2167 PROTOTYPE: $$ 2991 PROTOTYPE: $$
2168 CODE: 2992 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2993 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2994
2171bool 2995bool
2172_destroy (SV *coro_sv) 2996_destroy (SV *coro_sv)
2173 CODE: 2997 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2998 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 3002void
2179_exit (int code) 3003_exit (int code)
2180 PROTOTYPE: $ 3004 PROTOTYPE: $
2181 CODE: 3005 CODE:
2182 _exit (code); 3006 _exit (code);
3007
3008SV *
3009clone (Coro::State coro)
3010 CODE:
3011{
3012#if CORO_CLONE
3013 struct coro *ncoro = coro_clone (aTHX_ coro);
3014 MAGIC *mg;
3015 /* TODO: too much duplication */
3016 ncoro->hv = newHV ();
3017 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3018 mg->mg_flags |= MGf_DUP;
3019 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3020#else
3021 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3022#endif
3023}
3024 OUTPUT:
3025 RETVAL
2183 3026
2184int 3027int
2185cctx_stacksize (int new_stacksize = 0) 3028cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 3029 PROTOTYPE: ;$
2187 CODE: 3030 CODE:
… …
2237 eval = 1 3080 eval = 1
2238 CODE: 3081 CODE:
2239{ 3082{
2240 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2241 { 3084 {
2242 struct coro temp; 3085 struct coro *current = SvSTATE_current;
2243 3086
2244 if (!(coro->flags & CF_RUNNING)) 3087 if (current != coro)
2245 { 3088 {
2246 PUTBACK; 3089 PUTBACK;
2247 save_perl (aTHX_ &temp); 3090 save_perl (aTHX_ current);
2248 load_perl (aTHX_ coro); 3091 load_perl (aTHX_ coro);
3092 SPAGAIN;
2249 } 3093 }
2250 3094
2251 {
2252 dSP;
2253 ENTER;
2254 SAVETMPS;
2255 PUTBACK;
2256 PUSHSTACK; 3095 PUSHSTACK;
3096
2257 PUSHMARK (SP); 3097 PUSHMARK (SP);
3098 PUTBACK;
2258 3099
2259 if (ix) 3100 if (ix)
2260 eval_sv (coderef, 0); 3101 eval_sv (coderef, 0);
2261 else 3102 else
2262 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3103 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2263 3104
3105 SPAGAIN;
2264 POPSTACK; 3106 POPSTACK;
2265 SPAGAIN;
2266 FREETMPS;
2267 LEAVE;
2268 PUTBACK;
2269 }
2270 3107
2271 if (!(coro->flags & CF_RUNNING)) 3108 if (current != coro)
2272 { 3109 {
3110 PUTBACK;
2273 save_perl (aTHX_ coro); 3111 save_perl (aTHX_ coro);
2274 load_perl (aTHX_ &temp); 3112 load_perl (aTHX_ current);
2275 SPAGAIN; 3113 SPAGAIN;
2276 } 3114 }
2277 } 3115 }
2278} 3116}
2279 3117
… …
2292 3130
2293void 3131void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3132throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3133 PROTOTYPE: $;$
2296 CODE: 3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3138 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
2299 3141
2300void 3142void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3144 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3145 C_ARGS: aTHX_ coro, flags
2304 3146
2305SV * 3147SV *
2306has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3149 PROTOTYPE: $
2308 CODE: 3150 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3153 OUTPUT:
2311 RETVAL 3154 RETVAL
2312 3155
2313int 3156int
2314is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2334 3177
2335void 3178void
2336force_cctx () 3179force_cctx ()
2337 PROTOTYPE: 3180 PROTOTYPE:
2338 CODE: 3181 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2341 3183
2342void 3184void
2343swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3186 PROTOTYPE: $
2345 ALIAS: 3187 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3196
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3198 }
2357 3199
3200
2358MODULE = Coro::State PACKAGE = Coro 3201MODULE = Coro::State PACKAGE = Coro
2359 3202
2360BOOT: 3203BOOT:
2361{ 3204{
2362 int i; 3205 int i;
2363 3206
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3207 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3208 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3209 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3210 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3211 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3212 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3213 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3214 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3215 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3216
3217 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3218 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3219 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3220 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3221
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3222 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3223
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3224 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3225 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2382 3233
2383 { 3234 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3235 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3236
2386 coroapi.schedule = api_schedule; 3237 coroapi.schedule = api_schedule;
3238 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3239 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3240 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3241 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3242 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3243 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3244 coroapi.current = coro_current;
2393 3245
2394 GCoroAPI = &coroapi; 3246 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3247 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3248 SvREADONLY_on (sv);
2397 } 3249 }
2398} 3250}
2399 3251
2400void 3252void
3253terminate (...)
3254 CODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3256
3257void
2401schedule (...) 3258schedule (...)
2402 CODE: 3259 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3260 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3261
3262void
3263schedule_to (...)
3264 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3266
3267void
3268cede_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3271
2405void 3272void
2406cede (...) 3273cede (...)
2407 CODE: 3274 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3275 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3276
2410void 3277void
2411cede_notself (...) 3278cede_notself (...)
2412 CODE: 3279 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3280 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3281
3282void
3283_cancel (Coro::State self)
3284 CODE:
3285 coro_state_destroy (aTHX_ self);
3286 coro_call_on_destroy (aTHX_ self);
2414 3287
2415void 3288void
2416_set_current (SV *current) 3289_set_current (SV *current)
2417 PROTOTYPE: $ 3290 PROTOTYPE: $
2418 CODE: 3291 CODE:
… …
2421 3294
2422void 3295void
2423_set_readyhook (SV *hook) 3296_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3297 PROTOTYPE: $
2425 CODE: 3298 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3299 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3300 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3301
2431int 3302int
2432prio (Coro::State coro, int newprio = 0) 3303prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3304 PROTOTYPE: $;$
2434 ALIAS: 3305 ALIAS:
… …
2465 CODE: 3336 CODE:
2466 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2467 OUTPUT: 3338 OUTPUT:
2468 RETVAL 3339 RETVAL
2469 3340
2470# for async_pool speedup
2471void 3341void
2472_pool_1 (SV *cb) 3342_pool_handler (...)
2473 CODE: 3343 CODE:
2474{ 3344 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3345
2482 if (!invoke) 3346void
3347async_pool (SV *cv, ...)
3348 PROTOTYPE: &@
3349 PPCODE:
3350{
3351 HV *hv = (HV *)av_pop (av_async_pool);
3352 AV *av = newAV ();
3353 SV *cb = ST (0);
3354 int i;
3355
3356 av_extend (av, items - 2);
3357 for (i = 1; i < items; ++i)
3358 av_push (av, SvREFCNT_inc_NN (ST (i)));
3359
3360 if ((SV *)hv == &PL_sv_undef)
2483 { 3361 {
2484 SV *old = PL_diehook; 3362 PUSHMARK (SP);
2485 PL_diehook = 0; 3363 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3364 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3365 PUSHs ((SV *)cv_pool_handler);
3366 PUTBACK;
3367 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3368 SPAGAIN;
3369
3370 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3371 }
2489 3372
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3373 {
2503 av_fill (defav, len - 1); 3374 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3375
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3376 assert (!coro->invoke_cb);
3377 assert (!coro->invoke_av);
3378 coro->invoke_cb = SvREFCNT_inc (cb);
3379 coro->invoke_av = av;
2506 } 3380 }
2507}
2508 3381
2509void 3382 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3383
3384 if (GIMME_V != G_VOID)
3385 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3386 else
3387 SvREFCNT_dec (hv);
3388}
3389
3390SV *
3391rouse_cb ()
3392 PROTOTYPE:
2511 CODE: 3393 CODE:
2512{ 3394 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3395 OUTPUT:
2585 RETVAL 3396 RETVAL
2586 3397
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3398void
2593_get_state (SV *self) 3399rouse_wait (...)
2594 PROTOTYPE: $ 3400 PROTOTYPE: ;$
2595 PPCODE: 3401 PPCODE:
2596{ 3402 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621 3403
2622void 3404void
2623_set_state (SV *state) 3405on_enter (SV *block)
3406 ALIAS:
3407 on_leave = 1
2624 PROTOTYPE: $ 3408 PROTOTYPE: &
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE: 3409 CODE:
2650{ 3410{
2651 static int incede; 3411 struct coro *coro = SvSTATE_current;
3412 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2652 3413
2653 api_cede_notself (aTHX); 3414 block = (SV *)coro_sv_2cv (block);
2654 3415
2655 ++incede; 3416 if (!*avp)
2656 while (coro_nready >= incede && api_cede (aTHX)) 3417 *avp = newAV ();
2657 ;
2658 3418
2659 sv_setsv (sv_activity, &PL_sv_undef); 3419 av_push (*avp, SvREFCNT_inc (block));
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667 3420
2668 --incede; 3421 if (!ix)
3422 on_enterleave_call (aTHX_ block);
3423
3424 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3425 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3426 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
2669} 3427}
2670 3428
2671 3429
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3430MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3431
2674BOOT: 3432BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3433 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3434
3435
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3436MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3437
2679SV * 3438SV *
2680new (SV *klass, SV *count_ = 0) 3439new (SV *klass, SV *count = 0)
2681 CODE: 3440 CODE:
2682{ 3441 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3442 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3443 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3444 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3445 OUTPUT:
2687} 3446 RETVAL
3447
3448# helper for Coro::Channel
3449SV *
3450_alloc (int count)
3451 CODE:
3452 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3453 OUTPUT:
2689 RETVAL 3454 RETVAL
2690 3455
2691SV * 3456SV *
2692count (SV *self) 3457count (SV *self)
… …
2698void 3463void
2699up (SV *self, int adjust = 1) 3464up (SV *self, int adjust = 1)
2700 ALIAS: 3465 ALIAS:
2701 adjust = 1 3466 adjust = 1
2702 CODE: 3467 CODE:
2703{ 3468 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (aTHX_ cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3469
2730void 3470void
2731down (SV *self) 3471down (...)
2732 CODE: 3472 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3473 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3474
3475void
3476wait (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3479
2735void 3480void
2736try (SV *self) 3481try (SV *self)
2737 PPCODE: 3482 PPCODE:
2738{ 3483{
… …
2750 XSRETURN_NO; 3495 XSRETURN_NO;
2751} 3496}
2752 3497
2753void 3498void
2754waiters (SV *self) 3499waiters (SV *self)
2755 CODE: 3500 PPCODE:
2756{ 3501{
2757 AV *av = (AV *)SvRV (self); 3502 AV *av = (AV *)SvRV (self);
3503 int wcount = AvFILLp (av) + 1 - 1;
2758 3504
2759 if (GIMME_V == G_SCALAR) 3505 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3506 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3507 else
2762 { 3508 {
2763 int i; 3509 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3510 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3511 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3512 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3513 }
2768} 3514}
2769 3515
3516MODULE = Coro::State PACKAGE = Coro::Signal
3517
3518SV *
3519new (SV *klass)
3520 CODE:
3521 RETVAL = sv_bless (
3522 coro_waitarray_new (aTHX_ 0),
3523 GvSTASH (CvGV (cv))
3524 );
3525 OUTPUT:
3526 RETVAL
3527
3528void
3529wait (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3532
3533void
3534broadcast (SV *self)
3535 CODE:
3536{
3537 AV *av = (AV *)SvRV (self);
3538 coro_signal_wake (aTHX_ av, AvFILLp (av));
3539}
3540
3541void
3542send (SV *self)
3543 CODE:
3544{
3545 AV *av = (AV *)SvRV (self);
3546
3547 if (AvFILLp (av))
3548 coro_signal_wake (aTHX_ av, 1);
3549 else
3550 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3551}
3552
3553IV
3554awaited (SV *self)
3555 CODE:
3556 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3557 OUTPUT:
3558 RETVAL
3559
3560
3561MODULE = Coro::State PACKAGE = Coro::AnyEvent
3562
3563BOOT:
3564 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3565
3566void
3567_schedule (...)
3568 CODE:
3569{
3570 static int incede;
3571
3572 api_cede_notself (aTHX);
3573
3574 ++incede;
3575 while (coro_nready >= incede && api_cede (aTHX))
3576 ;
3577
3578 sv_setsv (sv_activity, &PL_sv_undef);
3579 if (coro_nready >= incede)
3580 {
3581 PUSHMARK (SP);
3582 PUTBACK;
3583 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3584 }
3585
3586 --incede;
3587}
3588
3589
3590MODULE = Coro::State PACKAGE = Coro::AIO
3591
3592void
3593_register (char *target, char *proto, SV *req)
3594 CODE:
3595{
3596 CV *req_cv = coro_sv_2cv (aTHX_ req);
3597 /* newXSproto doesn't return the CV on 5.8 */
3598 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3599 sv_setpv ((SV *)slf_cv, proto);
3600 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3601}
3602

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