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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 1.331 by root, Thu Nov 27 12:00:59 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;
281 289
282 /* linked list */ 290 /* linked list */
283 struct coro *next, *prev; 291 struct coro *next, *prev;
284}; 292};
285 293
286typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
288 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
290 301
291/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
292 303
293#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
299 310
300/* for Coro.pm */ 311/* for Coro.pm */
301static SV *coro_current; 312static SV *coro_current;
302static SV *coro_readyhook; 313static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 316static struct coro *coro_first;
305#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
339static AV * 360static AV *
340coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
341{ 362{
342 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
344 365
345 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
360 381
361static void 382static void
362free_padlist (pTHX_ AV *padlist) 383free_padlist (pTHX_ AV *padlist)
363{ 384{
364 /* may be during global destruction */ 385 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 386 if (!IN_DESTRUCT)
366 { 387 {
367 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
389
368 while (i >= 0) 390 while (i >= 0)
369 { 391 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 392 /* we try to be extra-careful here */
371 if (svp) 393 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 394
373 SV *sv; 395 I32 i = AvFILLp (av);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 396
397 while (i >= 0)
398 SvREFCNT_dec (AvARRAY (av)[i--]);
399
400 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 401 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 402 }
380 403
404 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 405 SvREFCNT_dec ((SV*)padlist);
382 } 406 }
383} 407}
384 408
385static int 409static int
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 419 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 420
397 return 0; 421 return 0;
398} 422}
399 423
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 424#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 425#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 426
403static MGVTBL coro_cv_vtbl = { 427static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 428 0, 0, 0, 0,
405 coro_cv_free 429 coro_cv_free
406}; 430};
407 431
432#define CORO_MAGIC_NN(sv, type) \
433 (expect_true (SvMAGIC (sv)->mg_type == type) \
434 ? SvMAGIC (sv) \
435 : mg_find (sv, type))
436
408#define CORO_MAGIC(sv, type) \ 437#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 438 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 439 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 440 : 0)
414 441
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 442#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) 443#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 444
418INLINE struct coro * 445INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 446SvSTATE_ (pTHX_ SV *coro)
420{ 447{
421 HV *stash; 448 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 465 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 466 return (struct coro *)mg->mg_ptr;
440} 467}
441 468
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 469#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
470
471/* faster than SvSTATE, but expects a coroutine hv */
472#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
473#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 474
444/* the next two functions merely cache the padlists */ 475/* the next two functions merely cache the padlists */
445static void 476static void
446get_padlist (pTHX_ CV *cv) 477get_padlist (pTHX_ CV *cv)
447{ 478{
… …
453 else 484 else
454 { 485 {
455#if CORO_PREFER_PERL_FUNCTIONS 486#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 487 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 488 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 489 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 490 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 491 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 492 SvREFCNT_dec (cp);
462#else 493#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 494 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 495#endif
465 } 496 }
466} 497}
467 498
468static void 499static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 506 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 507
477 av = (AV *)mg->mg_obj; 508 av = (AV *)mg->mg_obj;
478 509
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 510 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 511 av_extend (av, AvFILLp (av) + 1);
481 512
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 513 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 514}
484 515
485/** load & save, init *******************************************************/ 516/** load & save, init *******************************************************/
… …
490 perl_slots *slot = c->slot; 521 perl_slots *slot = c->slot;
491 c->slot = 0; 522 c->slot = 0;
492 523
493 PL_mainstack = c->mainstack; 524 PL_mainstack = c->mainstack;
494 525
495 GvSV (PL_defgv) = slot->defsv; 526 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 527 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 528 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 529 GvSV (irsgv) = slot->irsgv;
530 GvHV (PL_hintgv) = slot->hinthv;
499 531
500 #define VAR(name,type) PL_ ## name = slot->name; 532 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 533 # include "state.h"
502 #undef VAR 534 #undef VAR
503 535
… …
515 } 547 }
516 548
517 PUTBACK; 549 PUTBACK;
518 } 550 }
519 551
520 slf_frame = c->slf_frame; 552 slf_frame = c->slf_frame;
553 CORO_THROW = c->except;
521} 554}
522 555
523static void 556static void
524save_perl (pTHX_ Coro__State c) 557save_perl (pTHX_ Coro__State c)
525{ 558{
559 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 560 c->slf_frame = slf_frame;
527 561
528 { 562 {
529 dSP; 563 dSP;
530 I32 cxix = cxstack_ix; 564 I32 cxix = cxstack_ix;
… …
587 c->mainstack = PL_mainstack; 621 c->mainstack = PL_mainstack;
588 622
589 { 623 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 624 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 625
592 slot->defav = GvAV (PL_defgv); 626 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 627 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 628 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 629 slot->irsgv = GvSV (irsgv);
630 slot->hinthv = GvHV (PL_hintgv);
596 631
597 #define VAR(name,type) slot->name = PL_ ## name; 632 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 633 # include "state.h"
599 #undef VAR 634 #undef VAR
600 } 635 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 640 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 641 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 642 * not usually need a lot of stackspace.
608 */ 643 */
609#if CORO_PREFER_PERL_FUNCTIONS 644#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 645# define coro_init_stacks(thx) init_stacks ()
611#else 646#else
612static void 647static void
613coro_init_stacks (pTHX) 648coro_init_stacks (pTHX)
614{ 649{
615 PL_curstackinfo = new_stackinfo(32, 8); 650 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 714 Safefree (PL_retstack);
680#endif 715#endif
681} 716}
682 717
718#define CORO_RSS \
719 rss += sizeof (SYM (curstackinfo)); \
720 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
721 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
722 rss += SYM (tmps_max) * sizeof (SV *); \
723 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
724 rss += SYM (scopestack_max) * sizeof (I32); \
725 rss += SYM (savestack_max) * sizeof (ANY);
726
683static size_t 727static size_t
684coro_rss (pTHX_ struct coro *coro) 728coro_rss (pTHX_ struct coro *coro)
685{ 729{
686 size_t rss = sizeof (*coro); 730 size_t rss = sizeof (*coro);
687 731
688 if (coro->mainstack) 732 if (coro->mainstack)
689 { 733 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 734 if (coro->flags & CF_RUNNING)
694 { 735 {
695 slot = &tmp_slot; 736 #define SYM(sym) PL_ ## sym
696 737 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 738 #undef SYM
700 } 739 }
701 else 740 else
702 slot = coro->slot;
703
704 if (slot)
705 { 741 {
706 rss += sizeof (slot->curstackinfo); 742 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 743 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 744 #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 } 745 }
718 } 746 }
719 747
720 return rss; 748 return rss;
721} 749}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 851slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 852{
825 return 0; 853 return 0;
826} 854}
827 855
828static void 856static int
857slf_check_repeat (pTHX_ struct CoroSLF *frame)
858{
859 return 1;
860}
861
862static UNOP coro_setup_op;
863
864static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 865coro_setup (pTHX_ struct coro *coro)
830{ 866{
831 /* 867 /*
832 * emulate part of the perl startup here. 868 * emulate part of the perl startup here.
833 */ 869 */
… …
835 871
836 PL_runops = RUNOPS_DEFAULT; 872 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 873 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 874 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 875 PL_comppad = 0;
876 PL_comppad_name = 0;
877 PL_comppad_name_fill = 0;
878 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 879 PL_curpm = 0;
841 PL_curpad = 0; 880 PL_curpad = 0;
842 PL_localizing = 0; 881 PL_localizing = 0;
843 PL_dirty = 0; 882 PL_dirty = 0;
844 PL_restartop = 0; 883 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 884#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 885 PL_parser = 0;
847#endif 886#endif
887 PL_hints = 0;
848 888
849 /* recreate the die/warn hooks */ 889 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 890 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); 891 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 892
853 GvSV (PL_defgv) = newSV (0); 893 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 894 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 895 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 896 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
897 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 898 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 899 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 900
860 { 901 {
861 dSP; 902 dSP;
862 UNOP myop; 903 UNOP myop;
863 904
864 Zero (&myop, 1, UNOP); 905 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 906 myop.op_next = Nullop;
907 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 908 myop.op_flags = OPf_WANT_VOID;
867 909
868 PUSHMARK (SP); 910 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 911 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 912 PUTBACK;
871 PL_op = (OP *)&myop; 913 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 915 }
875 916
876 /* this newly created coroutine might be run on an existing cctx which most 917 /* 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. 918 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 919 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 920 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 */ 921 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
922
923 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
924 coro_setup_op.op_next = PL_op;
925 coro_setup_op.op_type = OP_ENTERSUB;
926 coro_setup_op.op_ppaddr = pp_slf;
927 /* no flags etc. required, as an init function won't be called */
928
929 PL_op = (OP *)&coro_setup_op;
930
931 /* copy throw, in case it was set before coro_setup */
932 CORO_THROW = coro->except;
881} 933}
882 934
883static void 935static void
884coro_destruct (pTHX_ struct coro *coro) 936coro_destruct (pTHX_ struct coro *coro)
885{ 937{
… …
904 SvREFCNT_dec (GvAV (PL_defgv)); 956 SvREFCNT_dec (GvAV (PL_defgv));
905 SvREFCNT_dec (GvSV (PL_errgv)); 957 SvREFCNT_dec (GvSV (PL_errgv));
906 SvREFCNT_dec (PL_defoutgv); 958 SvREFCNT_dec (PL_defoutgv);
907 SvREFCNT_dec (PL_rs); 959 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv)); 960 SvREFCNT_dec (GvSV (irsgv));
961 SvREFCNT_dec (GvHV (PL_hintgv));
909 962
910 SvREFCNT_dec (PL_diehook); 963 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 964 SvREFCNT_dec (PL_warnhook);
912 965
913 SvREFCNT_dec (coro->saved_deffh); 966 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 967 SvREFCNT_dec (coro->rouse_cb);
968 SvREFCNT_dec (coro->invoke_cb);
969 SvREFCNT_dec (coro->invoke_av);
915 970
916 coro_destruct_stacks (aTHX); 971 coro_destruct_stacks (aTHX);
917} 972}
918 973
919INLINE void 974INLINE void
… …
929static int 984static int
930runops_trace (pTHX) 985runops_trace (pTHX)
931{ 986{
932 COP *oldcop = 0; 987 COP *oldcop = 0;
933 int oldcxix = -2; 988 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 989
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 990 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 991 {
939 PERL_ASYNC_CHECK (); 992 PERL_ASYNC_CHECK ();
940 993
941 if (cctx->flags & CC_TRACE_ALL) 994 if (cctx_current->flags & CC_TRACE_ALL)
942 { 995 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 996 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 997 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 998 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 999 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1000 AV *av = newAV (); /* return values */
948 SV **cb; 1001 SV **cb;
… …
985 1038
986 if (PL_curcop != &PL_compiling) 1039 if (PL_curcop != &PL_compiling)
987 { 1040 {
988 SV **cb; 1041 SV **cb;
989 1042
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1043 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1044 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1045 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1046
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1047 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1048 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1049 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1050 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1051 SV *fullname = sv_2mortal (newSV (0));
1000 1052
1001 if (isGV (gv)) 1053 if (isGV (gv))
… …
1006 SAVETMPS; 1058 SAVETMPS;
1007 EXTEND (SP, 3); 1059 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1060 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1061 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1062 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1063 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1064 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1065 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); 1066 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1067 SPAGAIN;
1016 FREETMPS; 1068 FREETMPS;
… …
1019 } 1071 }
1020 1072
1021 oldcxix = cxstack_ix; 1073 oldcxix = cxstack_ix;
1022 } 1074 }
1023 1075
1024 if (cctx->flags & CC_TRACE_LINE) 1076 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1077 {
1026 dSP; 1078 dSP;
1027 1079
1028 PL_runops = RUNOPS_DEFAULT; 1080 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1081 ENTER;
… …
1048 1100
1049 TAINT_NOT; 1101 TAINT_NOT;
1050 return 0; 1102 return 0;
1051} 1103}
1052 1104
1105static struct CoroSLF cctx_ssl_frame;
1106
1053static void 1107static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1108slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1109{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1110 ta->prev = 0;
1058} 1111}
1059 1112
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1113static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1114slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1115{
1063/* also initialises PL_top_env */ 1116 *frame = cctx_ssl_frame;
1117
1118 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1119}
1120
1121/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1122static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1123cctx_prepare (pTHX)
1066{ 1124{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1125 PL_top_env = &PL_start_env;
1071 1126
1072 if (cctx->flags & CC_TRACE) 1127 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1128 PL_runops = runops_trace;
1074 1129
1075 Zero (&myop, 1, UNOP); 1130 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1131 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1132 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1133 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1134
1079 PUSHMARK (SP); 1135 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1136 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1137
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1138 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1139 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1140}
1088 1141
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1142/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1143INLINE void
1091transfer_tail (pTHX) 1144transfer_tail (pTHX)
1092{ 1145{
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); 1146 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} 1147}
1109 1148
1110/* 1149/*
1111 * this is a _very_ stripped down perl interpreter ;) 1150 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1151 */
… …
1124 /* normally we would need to skip the entersub here */ 1163 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1164 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1165 /* PL_nop = PL_nop->op_next */
1127 1166
1128 /* inject a fake subroutine call to cctx_init */ 1167 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1168 cctx_prepare (aTHX);
1130 1169
1131 /* cctx_run is the alternative tail of transfer() */ 1170 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1171 transfer_tail (aTHX);
1134 1172
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1173 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1174 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1175 perl_run (PL_curinterp);
1176 /*
1177 * Unfortunately, there is no way to get at the return values of the
1178 * coro body here, as perl_run destroys these
1179 */
1138 1180
1139 /* 1181 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1182 * 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) 1183 * 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 1184 * 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" 1185 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1186 * coroutine as Coro has no such concept.
1187 * This actually isn't valid with the pthread backend, but OSes requiring
1188 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1189 */
1146 PL_top_env = main_top_env; 1190 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1191 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1192 }
1149} 1193}
… …
1226cctx_destroy (coro_cctx *cctx) 1270cctx_destroy (coro_cctx *cctx)
1227{ 1271{
1228 if (!cctx) 1272 if (!cctx)
1229 return; 1273 return;
1230 1274
1275 assert (cctx != cctx_current);//D temporary
1276
1231 --cctx_count; 1277 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1278 coro_destroy (&cctx->cctx);
1233 1279
1234 /* coro_transfer creates new, empty cctx's */ 1280 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1281 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1339/** coroutine switching *****************************************************/
1294 1340
1295static void 1341static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1342transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1343{
1344 /* TODO: throwing up here is considered harmful */
1345
1298 if (expect_true (prev != next)) 1346 if (expect_true (prev != next))
1299 { 1347 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1348 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,"); 1349 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1302 1350
1303 if (expect_false (next->flags & CF_RUNNING)) 1351 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,"); 1352 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305 1353
1306 if (expect_false (next->flags & CF_DESTROYED)) 1354 if (expect_false (next->flags & CF_DESTROYED))
… …
1312#endif 1360#endif
1313 } 1361 }
1314} 1362}
1315 1363
1316/* always use the TRANSFER macro */ 1364/* always use the TRANSFER macro */
1317static void NOINLINE 1365static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1366transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1367{
1320 dSTACKLEVEL; 1368 dSTACKLEVEL;
1321 1369
1322 /* sometimes transfer is only called to set idle_sp */ 1370 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1371 if (expect_false (!prev))
1324 { 1372 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1373 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1374 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1375 }
1328 else if (expect_true (prev != next)) 1376 else if (expect_true (prev != next))
1329 { 1377 {
1330 coro_cctx *prev__cctx; 1378 coro_cctx *cctx_prev;
1331 1379
1332 if (expect_false (prev->flags & CF_NEW)) 1380 if (expect_false (prev->flags & CF_NEW))
1333 { 1381 {
1334 /* create a new empty/source context */ 1382 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1383 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1384 prev->flags |= CF_RUNNING;
1338 } 1385 }
1339 1386
1340 prev->flags &= ~CF_RUNNING; 1387 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1388 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1389
1345 /* first get rid of the old state */ 1390 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1391 save_perl (aTHX_ prev);
1347 1392
1348 if (expect_false (next->flags & CF_NEW)) 1393 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1398 coro_setup (aTHX_ next);
1354 } 1399 }
1355 else 1400 else
1356 load_perl (aTHX_ next); 1401 load_perl (aTHX_ next);
1357 1402
1358 prev__cctx = prev->cctx; 1403 assert (!prev->cctx);//D temporary
1359 1404
1360 /* possibly untie and reuse the cctx */ 1405 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1406 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1407 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1408 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1409 && !force_cctx
1365 )) 1410 ))
1366 { 1411 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1412 /* 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)); 1413 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1414
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 */ 1415 /* 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 */ 1416 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1417 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1418 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1419 next->cctx = cctx_get (aTHX);
1377 1420
1378 cctx_put (prev__cctx); 1421 cctx_put (cctx_current);
1379 } 1422 }
1423 else
1424 prev->cctx = cctx_current;
1380 1425
1381 ++next->usecount; 1426 ++next->usecount;
1382 1427
1383 if (expect_true (!next->cctx)) 1428 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1429 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1430
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1431 next->cctx = 0;
1387 transfer_next = next;
1388 1432
1389 if (expect_false (prev__cctx != next->cctx)) 1433 if (expect_false (cctx_prev != cctx_current))
1390 { 1434 {
1391 prev__cctx->top_env = PL_top_env; 1435 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1436 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1437 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1438 }
1395 1439
1396 transfer_tail (aTHX); 1440 transfer_tail (aTHX);
1397 } 1441 }
1398} 1442}
… …
1405static int 1449static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1450coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1451{
1408 if (coro->flags & CF_DESTROYED) 1452 if (coro->flags & CF_DESTROYED)
1409 return 0; 1453 return 0;
1454
1455 if (coro->on_destroy)
1456 coro->on_destroy (aTHX_ coro);
1410 1457
1411 coro->flags |= CF_DESTROYED; 1458 coro->flags |= CF_DESTROYED;
1412 1459
1413 if (coro->flags & CF_READY) 1460 if (coro->flags & CF_READY)
1414 { 1461 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1462 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1463 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1464 --coro_nready;
1419 UNLOCK;
1420 } 1465 }
1421 else 1466 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1467 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1468
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1469 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1481
1437 coro->slot = 0; 1482 coro->slot = 0;
1438 } 1483 }
1439 1484
1440 cctx_destroy (coro->cctx); 1485 cctx_destroy (coro->cctx);
1486 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1487 SvREFCNT_dec (coro->args);
1488 SvREFCNT_dec (CORO_THROW);
1442 1489
1443 if (coro->next) coro->next->prev = coro->prev; 1490 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1491 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1492 if (coro == coro_first) coro_first = coro->next;
1446 1493
… …
1500 1547
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1548 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1549 TRANSFER (ta, 1);
1503} 1550}
1504 1551
1552/*****************************************************************************/
1553/* gensub: simple closure generation utility */
1554
1555#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1556
1557/* create a closure from XS, returns a code reference */
1558/* the arg can be accessed via GENSUB_ARG from the callback */
1559/* the callback must use dXSARGS/XSRETURN */
1560static SV *
1561gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1562{
1563 CV *cv = (CV *)newSV (0);
1564
1565 sv_upgrade ((SV *)cv, SVt_PVCV);
1566
1567 CvANON_on (cv);
1568 CvISXSUB_on (cv);
1569 CvXSUB (cv) = xsub;
1570 GENSUB_ARG = arg;
1571
1572 return newRV_noinc ((SV *)cv);
1573}
1574
1505/** Coro ********************************************************************/ 1575/** Coro ********************************************************************/
1506 1576
1507static void 1577INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1578coro_enq (pTHX_ struct coro *coro)
1509{ 1579{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1580 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1581}
1512 1582
1513static SV * 1583INLINE SV *
1514coro_deq (pTHX) 1584coro_deq (pTHX)
1515{ 1585{
1516 int prio; 1586 int prio;
1517 1587
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1588 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1527{ 1597{
1528 struct coro *coro; 1598 struct coro *coro;
1529 SV *sv_hook; 1599 SV *sv_hook;
1530 void (*xs_hook)(void); 1600 void (*xs_hook)(void);
1531 1601
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1602 coro = SvSTATE (coro_sv);
1536 1603
1537 if (coro->flags & CF_READY) 1604 if (coro->flags & CF_READY)
1538 return 0; 1605 return 0;
1539 1606
1540 coro->flags |= CF_READY; 1607 coro->flags |= CF_READY;
1541 1608
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1609 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1610 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1611
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1612 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1613 ++coro_nready;
1549 1614
1550 UNLOCK;
1551
1552 if (sv_hook) 1615 if (sv_hook)
1553 { 1616 {
1554 dSP; 1617 dSP;
1555 1618
1556 ENTER; 1619 ENTER;
1557 SAVETMPS; 1620 SAVETMPS;
1558 1621
1559 PUSHMARK (SP); 1622 PUSHMARK (SP);
1560 PUTBACK; 1623 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1624 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1625
1564 FREETMPS; 1626 FREETMPS;
1565 LEAVE; 1627 LEAVE;
1566 } 1628 }
1567 1629
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1637api_is_ready (pTHX_ SV *coro_sv)
1576{ 1638{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1639 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1640}
1579 1641
1642/* expects to own a reference to next->hv */
1580INLINE void 1643INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1644prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1645{
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); 1646 SV *prev_sv = SvRV (coro_current);
1647
1627 ta->prev = SvSTATE (prev_sv); 1648 ta->prev = SvSTATE_hv (prev_sv);
1649 ta->next = next;
1650
1628 TRANSFER_CHECK (*ta); 1651 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1652
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1653 SvRV_set (coro_current, (SV *)next->hv);
1632 1654
1633 LOCK;
1634 free_coro_mortal (aTHX); 1655 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1656 coro_mortal = prev_sv;
1636 UNLOCK; 1657}
1658
1659static void
1660prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1661{
1662 for (;;)
1663 {
1664 SV *next_sv = coro_deq (aTHX);
1665
1666 if (expect_true (next_sv))
1667 {
1668 struct coro *next = SvSTATE_hv (next_sv);
1669
1670 /* cannot transfer to destroyed coros, skip and look for next */
1671 if (expect_false (next->flags & CF_DESTROYED))
1672 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1673 else
1674 {
1675 next->flags &= ~CF_READY;
1676 --coro_nready;
1677
1678 prepare_schedule_to (aTHX_ ta, next);
1679 break;
1680 }
1681 }
1682 else
1683 {
1684 /* nothing to schedule: call the idle handler */
1685 if (SvROK (sv_idle)
1686 && SvOBJECT (SvRV (sv_idle)))
1687 {
1688 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1689 api_ready (aTHX_ SvRV (sv_idle));
1690 --coro_nready;
1691 }
1692 else
1693 {
1694 dSP;
1695
1696 ENTER;
1697 SAVETMPS;
1698
1699 PUSHMARK (SP);
1700 PUTBACK;
1701 call_sv (sv_idle, G_VOID | G_DISCARD);
1702
1703 FREETMPS;
1704 LEAVE;
1705 }
1706 }
1707 }
1637} 1708}
1638 1709
1639INLINE void 1710INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1711prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1712{
… …
1662{ 1733{
1663 struct coro_transfer_args ta; 1734 struct coro_transfer_args ta;
1664 1735
1665 prepare_schedule (aTHX_ &ta); 1736 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1737 TRANSFER (ta, 1);
1738}
1739
1740static void
1741api_schedule_to (pTHX_ SV *coro_sv)
1742{
1743 struct coro_transfer_args ta;
1744 struct coro *next = SvSTATE (coro_sv);
1745
1746 SvREFCNT_inc_NN (coro_sv);
1747 prepare_schedule_to (aTHX_ &ta, next);
1667} 1748}
1668 1749
1669static int 1750static int
1670api_cede (pTHX) 1751api_cede (pTHX)
1671{ 1752{
… …
1700static void 1781static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1782api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1783{
1703 struct coro *coro = SvSTATE (coro_sv); 1784 struct coro *coro = SvSTATE (coro_sv);
1704 1785
1786 if (coro->flags & CF_RUNNING)
1787 croak ("cannot enable tracing on a running coroutine, caught");
1788
1705 if (flags & CC_TRACE) 1789 if (flags & CC_TRACE)
1706 { 1790 {
1707 if (!coro->cctx) 1791 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1792 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1793 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1794 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1795
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1796 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1797 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1798 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1799 {
… …
1720 else 1804 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1805 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1806 }
1723} 1807}
1724 1808
1725#if 0 1809static void
1810coro_call_on_destroy (pTHX_ struct coro *coro)
1811{
1812 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1813 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1814
1815 if (on_destroyp)
1816 {
1817 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1818
1819 while (AvFILLp (on_destroy) >= 0)
1820 {
1821 dSP; /* don't disturb outer sp */
1822 SV *cb = av_pop (on_destroy);
1823
1824 PUSHMARK (SP);
1825
1826 if (statusp)
1827 {
1828 int i;
1829 AV *status = (AV *)SvRV (*statusp);
1830 EXTEND (SP, AvFILLp (status) + 1);
1831
1832 for (i = 0; i <= AvFILLp (status); ++i)
1833 PUSHs (AvARRAY (status)[i]);
1834 }
1835
1836 PUTBACK;
1837 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1838 }
1839 }
1840}
1841
1842static void
1843slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1844{
1845 int i;
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *av = newAV ();
1848
1849 av_extend (av, items - 1);
1850 for (i = 0; i < items; ++i)
1851 av_push (av, SvREFCNT_inc_NN (arg [i]));
1852
1853 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1854
1855 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1856 api_ready (aTHX_ sv_manager);
1857
1858 frame->prepare = prepare_schedule;
1859 frame->check = slf_check_repeat;
1860}
1861
1862/*****************************************************************************/
1863/* async pool handler */
1864
1726static int 1865static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1866slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1867{
1729 AV *padlist; 1868 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1869 struct coro *coro = (struct coro *)frame->data;
1731 1870
1732 abort (); 1871 if (!coro->invoke_cb)
1872 return 1; /* loop till we have invoke */
1873 else
1874 {
1875 hv_store (hv, "desc", sizeof ("desc") - 1,
1876 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1877
1878 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1879
1880 {
1881 dSP;
1882 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1883 PUTBACK;
1884 }
1885
1886 SvREFCNT_dec (GvAV (PL_defgv));
1887 GvAV (PL_defgv) = coro->invoke_av;
1888 coro->invoke_av = 0;
1889
1890 return 0;
1891 }
1892}
1893
1894static void
1895slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 HV *hv = (HV *)SvRV (coro_current);
1898 struct coro *coro = SvSTATE_hv ((SV *)hv);
1899
1900 if (expect_true (coro->saved_deffh))
1901 {
1902 /* subsequent iteration */
1903 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1904 coro->saved_deffh = 0;
1905
1906 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1907 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1908 {
1909 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1910 coro->invoke_av = newAV ();
1911
1912 frame->prepare = prepare_nop;
1913 }
1914 else
1915 {
1916 av_clear (GvAV (PL_defgv));
1917 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1918
1919 coro->prio = 0;
1920
1921 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1922 api_trace (aTHX_ coro_current, 0);
1923
1924 frame->prepare = prepare_schedule;
1925 av_push (av_async_pool, SvREFCNT_inc (hv));
1926 }
1927 }
1928 else
1929 {
1930 /* first iteration, simply fall through */
1931 frame->prepare = prepare_nop;
1932 }
1933
1934 frame->check = slf_check_pool_handler;
1935 frame->data = (void *)coro;
1936}
1937
1938/*****************************************************************************/
1939/* rouse callback */
1940
1941#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1942
1943static void
1944coro_rouse_callback (pTHX_ CV *cv)
1945{
1946 dXSARGS;
1947 SV *data = (SV *)GENSUB_ARG;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 {
1951 /* first call, set args */
1952 AV *av = newAV ();
1953 SV *coro = SvRV (data);
1954
1955 SvRV_set (data, (SV *)av);
1956 api_ready (aTHX_ coro);
1957 SvREFCNT_dec (coro);
1958
1959 /* better take a full copy of the arguments */
1960 while (items--)
1961 av_store (av, items, newSVsv (ST (items)));
1962 }
1963
1964 XSRETURN_EMPTY;
1965}
1966
1967static int
1968slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1969{
1970 SV *data = (SV *)frame->data;
1971
1972 if (CORO_THROW)
1973 return 0;
1974
1975 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1976 return 1;
1977
1978 /* now push all results on the stack */
1979 {
1980 dSP;
1981 AV *av = (AV *)SvRV (data);
1982 int i;
1983
1984 EXTEND (SP, AvFILLp (av) + 1);
1985 for (i = 0; i <= AvFILLp (av); ++i)
1986 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1987
1988 /* we have stolen the elements, so ste length to zero and free */
1989 AvFILLp (av) = -1;
1990 av_undef (av);
1991
1992 PUTBACK;
1993 }
1733 1994
1734 return 0; 1995 return 0;
1735} 1996}
1736 1997
1737static MGVTBL coro_gensub_vtbl = { 1998static void
1738 0, 0, 0, 0, 1999slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2000{
1740}; 2001 SV *cb;
1741#endif 2002
2003 if (items)
2004 cb = arg [0];
2005 else
2006 {
2007 struct coro *coro = SvSTATE_current;
2008
2009 if (!coro->rouse_cb)
2010 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2011
2012 cb = sv_2mortal (coro->rouse_cb);
2013 coro->rouse_cb = 0;
2014 }
2015
2016 if (!SvROK (cb)
2017 || SvTYPE (SvRV (cb)) != SVt_PVCV
2018 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2019 croak ("Coro::rouse_wait called with illegal callback argument,");
2020
2021 {
2022 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2023 SV *data = (SV *)GENSUB_ARG;
2024
2025 frame->data = (void *)data;
2026 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2027 frame->check = slf_check_rouse_wait;
2028 }
2029}
2030
2031static SV *
2032coro_new_rouse_cb (pTHX)
2033{
2034 HV *hv = (HV *)SvRV (coro_current);
2035 struct coro *coro = SvSTATE_hv (hv);
2036 SV *data = newRV_inc ((SV *)hv);
2037 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2038
2039 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2040 SvREFCNT_dec (data); /* magicext increases the refcount */
2041
2042 SvREFCNT_dec (coro->rouse_cb);
2043 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2044
2045 return cb;
2046}
2047
2048/*****************************************************************************/
2049/* schedule-like-function opcode (SLF) */
2050
2051static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2052static const CV *slf_cv;
2053static SV **slf_argv;
2054static int slf_argc, slf_arga; /* count, allocated */
2055static I32 slf_ax; /* top of stack, for restore */
2056
2057/* this restores the stack in the case we patched the entersub, to */
2058/* recreate the stack frame as perl will on following calls */
2059/* since entersub cleared the stack */
2060static OP *
2061pp_restore (pTHX)
2062{
2063 int i;
2064 SV **SP = PL_stack_base + slf_ax;
2065
2066 PUSHMARK (SP);
2067
2068 EXTEND (SP, slf_argc + 1);
2069
2070 for (i = 0; i < slf_argc; ++i)
2071 PUSHs (sv_2mortal (slf_argv [i]));
2072
2073 PUSHs ((SV *)CvGV (slf_cv));
2074
2075 RETURNOP (slf_restore.op_first);
2076}
2077
2078static void
2079slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2080{
2081 SV **arg = (SV **)slf_frame.data;
2082
2083 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2084}
2085
2086static void
2087slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2088{
2089 if (items != 2)
2090 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2091
2092 frame->prepare = slf_prepare_transfer;
2093 frame->check = slf_check_nop;
2094 frame->data = (void *)arg; /* let's hope it will stay valid */
2095}
2096
2097static void
2098slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2099{
2100 frame->prepare = prepare_schedule;
2101 frame->check = slf_check_nop;
2102}
2103
2104static void
2105slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2106{
2107 struct coro *next = (struct coro *)slf_frame.data;
2108
2109 SvREFCNT_inc_NN (next->hv);
2110 prepare_schedule_to (aTHX_ ta, next);
2111}
2112
2113static void
2114slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 if (!items)
2117 croak ("Coro::schedule_to expects a coroutine argument, caught");
2118
2119 frame->data = (void *)SvSTATE (arg [0]);
2120 frame->prepare = slf_prepare_schedule_to;
2121 frame->check = slf_check_nop;
2122}
2123
2124static void
2125slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 api_ready (aTHX_ SvRV (coro_current));
2128
2129 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2130}
2131
2132static void
2133slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 frame->prepare = prepare_cede;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede_notself;
2143 frame->check = slf_check_nop;
2144}
2145
2146/*
2147 * these not obviously related functions are all rolled into one
2148 * function to increase chances that they all will call transfer with the same
2149 * stack offset
2150 * SLF stands for "schedule-like-function".
2151 */
2152static OP *
2153pp_slf (pTHX)
2154{
2155 I32 checkmark; /* mark SP to see how many elements check has pushed */
2156
2157 /* set up the slf frame, unless it has already been set-up */
2158 /* the latter happens when a new coro has been started */
2159 /* or when a new cctx was attached to an existing coroutine */
2160 if (expect_true (!slf_frame.prepare))
2161 {
2162 /* first iteration */
2163 dSP;
2164 SV **arg = PL_stack_base + TOPMARK + 1;
2165 int items = SP - arg; /* args without function object */
2166 SV *gv = *sp;
2167
2168 /* do a quick consistency check on the "function" object, and if it isn't */
2169 /* for us, divert to the real entersub */
2170 if (SvTYPE (gv) != SVt_PVGV
2171 || !GvCV (gv)
2172 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2173 return PL_ppaddr[OP_ENTERSUB](aTHX);
2174
2175 if (!(PL_op->op_flags & OPf_STACKED))
2176 {
2177 /* ampersand-form of call, use @_ instead of stack */
2178 AV *av = GvAV (PL_defgv);
2179 arg = AvARRAY (av);
2180 items = AvFILLp (av) + 1;
2181 }
2182
2183 /* now call the init function, which needs to set up slf_frame */
2184 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2185 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2186
2187 /* pop args */
2188 SP = PL_stack_base + POPMARK;
2189
2190 PUTBACK;
2191 }
2192
2193 /* now that we have a slf_frame, interpret it! */
2194 /* we use a callback system not to make the code needlessly */
2195 /* complicated, but so we can run multiple perl coros from one cctx */
2196
2197 do
2198 {
2199 struct coro_transfer_args ta;
2200
2201 slf_frame.prepare (aTHX_ &ta);
2202 TRANSFER (ta, 0);
2203
2204 checkmark = PL_stack_sp - PL_stack_base;
2205 }
2206 while (slf_frame.check (aTHX_ &slf_frame));
2207
2208 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2209
2210 /* exception handling */
2211 if (expect_false (CORO_THROW))
2212 {
2213 SV *exception = sv_2mortal (CORO_THROW);
2214
2215 CORO_THROW = 0;
2216 sv_setsv (ERRSV, exception);
2217 croak (0);
2218 }
2219
2220 /* return value handling - mostly like entersub */
2221 /* make sure we put something on the stack in scalar context */
2222 if (GIMME_V == G_SCALAR)
2223 {
2224 dSP;
2225 SV **bot = PL_stack_base + checkmark;
2226
2227 if (sp == bot) /* too few, push undef */
2228 bot [1] = &PL_sv_undef;
2229 else if (sp != bot + 1) /* too many, take last one */
2230 bot [1] = *sp;
2231
2232 SP = bot + 1;
2233
2234 PUTBACK;
2235 }
2236
2237 return NORMAL;
2238}
2239
2240static void
2241api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2242{
2243 int i;
2244 SV **arg = PL_stack_base + ax;
2245 int items = PL_stack_sp - arg + 1;
2246
2247 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2248
2249 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2250 && PL_op->op_ppaddr != pp_slf)
2251 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2252
2253 CvFLAGS (cv) |= CVf_SLF;
2254 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2255 slf_cv = cv;
2256
2257 /* we patch the op, and then re-run the whole call */
2258 /* we have to put the same argument on the stack for this to work */
2259 /* and this will be done by pp_restore */
2260 slf_restore.op_next = (OP *)&slf_restore;
2261 slf_restore.op_type = OP_CUSTOM;
2262 slf_restore.op_ppaddr = pp_restore;
2263 slf_restore.op_first = PL_op;
2264
2265 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2266
2267 if (PL_op->op_flags & OPf_STACKED)
2268 {
2269 if (items > slf_arga)
2270 {
2271 slf_arga = items;
2272 free (slf_argv);
2273 slf_argv = malloc (slf_arga * sizeof (SV *));
2274 }
2275
2276 slf_argc = items;
2277
2278 for (i = 0; i < items; ++i)
2279 slf_argv [i] = SvREFCNT_inc (arg [i]);
2280 }
2281 else
2282 slf_argc = 0;
2283
2284 PL_op->op_ppaddr = pp_slf;
2285 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2286
2287 PL_op = (OP *)&slf_restore;
2288}
1742 2289
1743/*****************************************************************************/ 2290/*****************************************************************************/
1744/* PerlIO::cede */ 2291/* PerlIO::cede */
1745 2292
1746typedef struct 2293typedef struct
… …
1814 PerlIOBuf_get_cnt, 2361 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2362 PerlIOBuf_set_ptrcnt,
1816}; 2363};
1817 2364
1818/*****************************************************************************/ 2365/*****************************************************************************/
2366/* Coro::Semaphore & Coro::Signal */
1819 2367
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 * 2368static SV *
1831pp_restore (pTHX) 2369coro_waitarray_new (pTHX_ int count)
1832{ 2370{
1833 dSP; 2371 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2372 AV *av = newAV ();
2373 SV **ary;
1834 2374
1835 PUSHMARK (SP); 2375 /* unfortunately, building manually saves memory */
2376 Newx (ary, 2, SV *);
2377 AvALLOC (av) = ary;
2378#if PERL_VERSION_ATLEAST (5,10,0)
2379 AvARRAY (av) = ary;
2380#else
2381 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2382 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2383 SvPVX ((SV *)av) = (char *)ary;
2384#endif
2385 AvMAX (av) = 1;
2386 AvFILLp (av) = 0;
2387 ary [0] = newSViv (count);
1836 2388
1837 EXTEND (SP, 3); 2389 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} 2390}
1845 2391
1846static void 2392/* 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 2393
1852static void 2394static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2395coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2396{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2397 SV *count_sv = AvARRAY (av)[0];
2398 IV count = SvIVX (count_sv);
1856 2399
1857 frame->prepare = slf_prepare_set_stacklevel; 2400 count += adjust;
1858 frame->check = slf_check_nop; 2401 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2402
1862static void 2403 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2404 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 { 2405 {
1921 /* first iteration */ 2406 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 2407
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2408 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2409 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2410 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2411 cb = av_shift (av);
1931 2412
1932 /* pop args */ 2413 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2414 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2415 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2416 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2417 }
1942 2418 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 { 2419 {
1973 if (sp == bot) 2420 dSP;
1974 XPUSHs (&PL_sv_undef); 2421 PUSHMARK (SP);
1975 2422 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2423 PUTBACK;
2424 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2425 }
1978 2426
1979 PUTBACK; 2427 SvREFCNT_dec (cb);
1980 } 2428 }
1981
1982 return NORMAL;
1983} 2429}
1984 2430
1985static void 2431static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2432coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2433{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2434 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2435 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} 2436}
2017
2018/*****************************************************************************/
2019 2437
2020static int 2438static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2439slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2440{
2023 AV *av = (AV *)frame->data; 2441 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2442 SV *count_sv = AvARRAY (av)[0];
2025 2443
2444 /* if we are about to throw, don't actually acquire the lock, just throw */
2445 if (CORO_THROW)
2446 return 0;
2026 if (SvIVX (count_sv) > 0) 2447 else if (SvIVX (count_sv) > 0)
2027 { 2448 {
2449 SvSTATE_current->on_destroy = 0;
2450
2451 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2452 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2453 else
2454 coro_semaphore_adjust (aTHX_ av, 0);
2455
2029 return 0; 2456 return 0;
2030 } 2457 }
2031 else 2458 else
2032 { 2459 {
2033 int i; 2460 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2469 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2470 return 1;
2044 } 2471 }
2045} 2472}
2046 2473
2047static void 2474static int
2475slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2476{
2477 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2478}
2479
2480static int
2481slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2482{
2483 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2484}
2485
2486static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2487slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2488{
2050 AV *av = (AV *)SvRV (arg [0]); 2489 AV *av = (AV *)SvRV (arg [0]);
2051 2490
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2491 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2492 {
… …
2058 { 2497 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2498 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2499
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2500 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2501 frame->prepare = prepare_schedule;
2063 }
2064 2502
2503 /* to avoid race conditions when a woken-up coro gets terminated */
2504 /* we arrange for a temporary on_destroy that calls adjust (0) */
2505 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2506 }
2507}
2508
2509static void
2510slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2511{
2512 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2513 frame->check = slf_check_semaphore_down;
2066
2067} 2514}
2515
2516static void
2517slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 if (items >= 2)
2520 {
2521 /* callback form */
2522 AV *av = (AV *)SvRV (arg [0]);
2523 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2524
2525 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2526
2527 if (SvIVX (AvARRAY (av)[0]) > 0)
2528 coro_semaphore_adjust (aTHX_ av, 0);
2529
2530 frame->prepare = prepare_nop;
2531 frame->check = slf_check_nop;
2532 }
2533 else
2534 {
2535 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2536 frame->check = slf_check_semaphore_wait;
2537 }
2538}
2539
2540/* signal */
2541
2542static void
2543coro_signal_wake (pTHX_ AV *av, int count)
2544{
2545 SvIVX (AvARRAY (av)[0]) = 0;
2546
2547 /* now signal count waiters */
2548 while (count > 0 && AvFILLp (av) > 0)
2549 {
2550 SV *cb;
2551
2552 /* swap first two elements so we can shift a waiter */
2553 cb = AvARRAY (av)[0];
2554 AvARRAY (av)[0] = AvARRAY (av)[1];
2555 AvARRAY (av)[1] = cb;
2556
2557 cb = av_shift (av);
2558
2559 api_ready (aTHX_ cb);
2560 sv_setiv (cb, 0); /* signal waiter */
2561 SvREFCNT_dec (cb);
2562
2563 --count;
2564 }
2565}
2566
2567static int
2568slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2569{
2570 /* if we are about to throw, also stop waiting */
2571 return SvROK ((SV *)frame->data) && !CORO_THROW;
2572}
2573
2574static void
2575slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 AV *av = (AV *)SvRV (arg [0]);
2578
2579 if (SvIVX (AvARRAY (av)[0]))
2580 {
2581 SvIVX (AvARRAY (av)[0]) = 0;
2582 frame->prepare = prepare_nop;
2583 frame->check = slf_check_nop;
2584 }
2585 else
2586 {
2587 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2588
2589 av_push (av, waiter);
2590
2591 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2592 frame->prepare = prepare_schedule;
2593 frame->check = slf_check_signal_wait;
2594 }
2595}
2596
2597/*****************************************************************************/
2598/* Coro::AIO */
2599
2600#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2601
2602/* helper storage struct */
2603struct io_state
2604{
2605 int errorno;
2606 I32 laststype; /* U16 in 5.10.0 */
2607 int laststatval;
2608 Stat_t statcache;
2609};
2610
2611static void
2612coro_aio_callback (pTHX_ CV *cv)
2613{
2614 dXSARGS;
2615 AV *state = (AV *)GENSUB_ARG;
2616 SV *coro = av_pop (state);
2617 SV *data_sv = newSV (sizeof (struct io_state));
2618
2619 av_extend (state, items - 1);
2620
2621 sv_upgrade (data_sv, SVt_PV);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624
2625 {
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627
2628 data->errorno = errno;
2629 data->laststype = PL_laststype;
2630 data->laststatval = PL_laststatval;
2631 data->statcache = PL_statcache;
2632 }
2633
2634 /* now build the result vector out of all the parameters and the data_sv */
2635 {
2636 int i;
2637
2638 for (i = 0; i < items; ++i)
2639 av_push (state, SvREFCNT_inc_NN (ST (i)));
2640 }
2641
2642 av_push (state, data_sv);
2643
2644 api_ready (aTHX_ coro);
2645 SvREFCNT_dec (coro);
2646 SvREFCNT_dec ((AV *)state);
2647}
2648
2649static int
2650slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2651{
2652 AV *state = (AV *)frame->data;
2653
2654 /* if we are about to throw, return early */
2655 /* this does not cancel the aio request, but at least */
2656 /* it quickly returns */
2657 if (CORO_THROW)
2658 return 0;
2659
2660 /* one element that is an RV? repeat! */
2661 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2662 return 1;
2663
2664 /* restore status */
2665 {
2666 SV *data_sv = av_pop (state);
2667 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2668
2669 errno = data->errorno;
2670 PL_laststype = data->laststype;
2671 PL_laststatval = data->laststatval;
2672 PL_statcache = data->statcache;
2673
2674 SvREFCNT_dec (data_sv);
2675 }
2676
2677 /* push result values */
2678 {
2679 dSP;
2680 int i;
2681
2682 EXTEND (SP, AvFILLp (state) + 1);
2683 for (i = 0; i <= AvFILLp (state); ++i)
2684 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2685
2686 PUTBACK;
2687 }
2688
2689 return 0;
2690}
2691
2692static void
2693slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2694{
2695 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2696 SV *coro_hv = SvRV (coro_current);
2697 struct coro *coro = SvSTATE_hv (coro_hv);
2698
2699 /* put our coroutine id on the state arg */
2700 av_push (state, SvREFCNT_inc_NN (coro_hv));
2701
2702 /* first see whether we have a non-zero priority and set it as AIO prio */
2703 if (coro->prio)
2704 {
2705 dSP;
2706
2707 static SV *prio_cv;
2708 static SV *prio_sv;
2709
2710 if (expect_false (!prio_cv))
2711 {
2712 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2713 prio_sv = newSViv (0);
2714 }
2715
2716 PUSHMARK (SP);
2717 sv_setiv (prio_sv, coro->prio);
2718 XPUSHs (prio_sv);
2719
2720 PUTBACK;
2721 call_sv (prio_cv, G_VOID | G_DISCARD);
2722 }
2723
2724 /* now call the original request */
2725 {
2726 dSP;
2727 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2728 int i;
2729
2730 PUSHMARK (SP);
2731
2732 /* first push all args to the stack */
2733 EXTEND (SP, items + 1);
2734
2735 for (i = 0; i < items; ++i)
2736 PUSHs (arg [i]);
2737
2738 /* now push the callback closure */
2739 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2740
2741 /* now call the AIO function - we assume our request is uncancelable */
2742 PUTBACK;
2743 call_sv ((SV *)req, G_VOID | G_DISCARD);
2744 }
2745
2746 /* now that the requets is going, we loop toll we have a result */
2747 frame->data = (void *)state;
2748 frame->prepare = prepare_schedule;
2749 frame->check = slf_check_aio_req;
2750}
2751
2752static void
2753coro_aio_req_xs (pTHX_ CV *cv)
2754{
2755 dXSARGS;
2756
2757 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2758
2759 XSRETURN_EMPTY;
2760}
2761
2762/*****************************************************************************/
2763
2764#if CORO_CLONE
2765# include "clone.c"
2766#endif
2068 2767
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2768MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2769
2071PROTOTYPES: DISABLE 2770PROTOTYPES: DISABLE
2072 2771
2073BOOT: 2772BOOT:
2074{ 2773{
2075#ifdef USE_ITHREADS 2774#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2775# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2776 coro_thx = PERL_GET_CONTEXT;
2079# endif 2777# endif
2080#endif 2778#endif
2081 BOOT_PAGESIZE; 2779 BOOT_PAGESIZE;
2780
2781 cctx_current = cctx_new_empty ();
2082 2782
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2783 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2784 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 2785
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2786 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 2801 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2802 main_top_env = PL_top_env;
2103 2803
2104 while (main_top_env->je_prev) 2804 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2805 main_top_env = main_top_env->je_prev;
2806
2807 {
2808 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2809
2810 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2811 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2812
2813 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2814 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2815 }
2106 2816
2107 coroapi.ver = CORO_API_VERSION; 2817 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2818 coroapi.rev = CORO_API_REVISION;
2109 2819
2110 coroapi.transfer = api_transfer; 2820 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2838 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2839}
2130 2840
2131SV * 2841SV *
2132new (char *klass, ...) 2842new (char *klass, ...)
2843 ALIAS:
2844 Coro::new = 1
2133 CODE: 2845 CODE:
2134{ 2846{
2135 struct coro *coro; 2847 struct coro *coro;
2136 MAGIC *mg; 2848 MAGIC *mg;
2137 HV *hv; 2849 HV *hv;
2850 CV *cb;
2138 int i; 2851 int i;
2852
2853 if (items > 1)
2854 {
2855 cb = coro_sv_2cv (aTHX_ ST (1));
2856
2857 if (!ix)
2858 {
2859 if (CvISXSUB (cb))
2860 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2861
2862 if (!CvROOT (cb))
2863 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2864 }
2865 }
2139 2866
2140 Newz (0, coro, 1, struct coro); 2867 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2868 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2869 coro->flags = CF_NEW;
2143 2870
… …
2148 coro->hv = hv = newHV (); 2875 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2876 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2877 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2878 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2879
2880 if (items > 1)
2881 {
2153 av_extend (coro->args, items - 1); 2882 av_extend (coro->args, items - 1 + ix - 1);
2883
2884 if (ix)
2885 {
2886 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2887 cb = cv_coro_run;
2888 }
2889
2890 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2891
2154 for (i = 1; i < items; i++) 2892 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2893 av_push (coro->args, newSVsv (ST (i)));
2894 }
2156} 2895}
2157 OUTPUT: 2896 OUTPUT:
2158 RETVAL 2897 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2898
2165void 2899void
2166transfer (...) 2900transfer (...)
2167 PROTOTYPE: $$ 2901 PROTOTYPE: $$
2168 CODE: 2902 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2903 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2904
2171bool 2905bool
2172_destroy (SV *coro_sv) 2906_destroy (SV *coro_sv)
2173 CODE: 2907 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 2912void
2179_exit (int code) 2913_exit (int code)
2180 PROTOTYPE: $ 2914 PROTOTYPE: $
2181 CODE: 2915 CODE:
2182 _exit (code); 2916 _exit (code);
2917
2918SV *
2919clone (Coro::State coro)
2920 CODE:
2921{
2922#if CORO_CLONE
2923 struct coro *ncoro = coro_clone (coro);
2924 MAGIC *mg;
2925 /* TODO: too much duplication */
2926 ncoro->hv = newHV ();
2927 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2928 mg->mg_flags |= MGf_DUP;
2929 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2930#else
2931 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2932#endif
2933}
2934 OUTPUT:
2935 RETVAL
2183 2936
2184int 2937int
2185cctx_stacksize (int new_stacksize = 0) 2938cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 2939 PROTOTYPE: ;$
2187 CODE: 2940 CODE:
… …
2292 3045
2293void 3046void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3047throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3048 PROTOTYPE: $;$
2296 CODE: 3049 CODE:
3050{
3051 struct coro *current = SvSTATE_current;
3052 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3053 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3054 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3055}
2299 3056
2300void 3057void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3058api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3059 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3060 C_ARGS: aTHX_ coro, flags
2304 3061
2305SV * 3062SV *
2306has_cctx (Coro::State coro) 3063has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3064 PROTOTYPE: $
2308 CODE: 3065 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3066 /* maybe manage the running flag differently */
3067 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3068 OUTPUT:
2311 RETVAL 3069 RETVAL
2312 3070
2313int 3071int
2314is_traced (Coro::State coro) 3072is_traced (Coro::State coro)
… …
2334 3092
2335void 3093void
2336force_cctx () 3094force_cctx ()
2337 PROTOTYPE: 3095 PROTOTYPE:
2338 CODE: 3096 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3097 cctx_current->idle_sp = 0;
2341 3098
2342void 3099void
2343swap_defsv (Coro::State self) 3100swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3101 PROTOTYPE: $
2345 ALIAS: 3102 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3110 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3111
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3112 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3113 }
2357 3114
3115
2358MODULE = Coro::State PACKAGE = Coro 3116MODULE = Coro::State PACKAGE = Coro
2359 3117
2360BOOT: 3118BOOT:
2361{ 3119{
2362 int i; 3120 int i;
2363 3121
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3122 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3123 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3124 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3125 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3126 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3128 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3129 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3130 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3131
3132 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3133 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3134 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3135 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3136
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3137 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3138
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3139 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3140 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2382 3148
2383 { 3149 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3150 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3151
2386 coroapi.schedule = api_schedule; 3152 coroapi.schedule = api_schedule;
3153 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3154 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3155 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3156 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3157 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3158 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3159 coroapi.current = coro_current;
2393 3160
2394 GCoroAPI = &coroapi; 3161 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3162 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3163 SvREADONLY_on (sv);
2397 } 3164 }
2398} 3165}
2399 3166
2400void 3167void
3168terminate (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3171
3172void
2401schedule (...) 3173schedule (...)
2402 CODE: 3174 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3175 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3176
3177void
3178schedule_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3181
3182void
3183cede_to (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3186
2405void 3187void
2406cede (...) 3188cede (...)
2407 CODE: 3189 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3190 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3191
2410void 3192void
2411cede_notself (...) 3193cede_notself (...)
2412 CODE: 3194 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3195 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3196
3197void
3198_cancel (Coro::State self)
3199 CODE:
3200 coro_state_destroy (aTHX_ self);
3201 coro_call_on_destroy (aTHX_ self);
2414 3202
2415void 3203void
2416_set_current (SV *current) 3204_set_current (SV *current)
2417 PROTOTYPE: $ 3205 PROTOTYPE: $
2418 CODE: 3206 CODE:
… …
2421 3209
2422void 3210void
2423_set_readyhook (SV *hook) 3211_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3212 PROTOTYPE: $
2425 CODE: 3213 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3214 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3215 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3216
2431int 3217int
2432prio (Coro::State coro, int newprio = 0) 3218prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3219 PROTOTYPE: $;$
2434 ALIAS: 3220 ALIAS:
… …
2465 CODE: 3251 CODE:
2466 RETVAL = coro_nready; 3252 RETVAL = coro_nready;
2467 OUTPUT: 3253 OUTPUT:
2468 RETVAL 3254 RETVAL
2469 3255
2470# for async_pool speedup
2471void 3256void
2472_pool_1 (SV *cb) 3257_pool_handler (...)
2473 CODE: 3258 CODE:
2474{ 3259 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 3260
2482 if (!invoke) 3261void
3262async_pool (SV *cv, ...)
3263 PROTOTYPE: &@
3264 PPCODE:
3265{
3266 HV *hv = (HV *)av_pop (av_async_pool);
3267 AV *av = newAV ();
3268 SV *cb = ST (0);
3269 int i;
3270
3271 av_extend (av, items - 2);
3272 for (i = 1; i < items; ++i)
3273 av_push (av, SvREFCNT_inc_NN (ST (i)));
3274
3275 if ((SV *)hv == &PL_sv_undef)
2483 { 3276 {
2484 SV *old = PL_diehook; 3277 PUSHMARK (SP);
2485 PL_diehook = 0; 3278 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3279 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3280 PUSHs ((SV *)cv_pool_handler);
3281 PUTBACK;
3282 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3283 SPAGAIN;
3284
3285 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3286 }
2489 3287
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 { 3288 {
2503 av_fill (defav, len - 1); 3289 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3290
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3291 assert (!coro->invoke_cb);
3292 assert (!coro->invoke_av);
3293 coro->invoke_cb = SvREFCNT_inc (cb);
3294 coro->invoke_av = av;
2506 } 3295 }
2507}
2508 3296
2509void 3297 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3298
3299 if (GIMME_V != G_VOID)
3300 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3301 else
3302 SvREFCNT_dec (hv);
3303}
3304
3305SV *
3306rouse_cb ()
3307 PROTOTYPE:
2511 CODE: 3308 CODE:
2512{ 3309 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: 3310 OUTPUT:
2585 RETVAL 3311 RETVAL
2586 3312
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3313void
2593_get_state (SV *self) 3314rouse_wait (...)
2594 PROTOTYPE: $ 3315 PROTOTYPE: ;$
2595 PPCODE: 3316 PPCODE:
2596{ 3317 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621
2622void
2623_set_state (SV *state)
2624 PROTOTYPE: $
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE:
2650{
2651 static int incede;
2652
2653 api_cede_notself (aTHX);
2654
2655 ++incede;
2656 while (coro_nready >= incede && api_cede (aTHX))
2657 ;
2658
2659 sv_setsv (sv_activity, &PL_sv_undef);
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667
2668 --incede;
2669}
2670 3318
2671 3319
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3320MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3321
2674BOOT: 3322BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3324
3325
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3326MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3327
2679SV * 3328SV *
2680new (SV *klass, SV *count_ = 0) 3329new (SV *klass, SV *count = 0)
2681 CODE: 3330 CODE:
2682{ 3331 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3332 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3333 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3334 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3335 OUTPUT:
2687} 3336 RETVAL
3337
3338# helper for Coro::Channel
3339SV *
3340_alloc (int count)
3341 CODE:
3342 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3343 OUTPUT:
2689 RETVAL 3344 RETVAL
2690 3345
2691SV * 3346SV *
2692count (SV *self) 3347count (SV *self)
… …
2698void 3353void
2699up (SV *self, int adjust = 1) 3354up (SV *self, int adjust = 1)
2700 ALIAS: 3355 ALIAS:
2701 adjust = 1 3356 adjust = 1
2702 CODE: 3357 CODE:
2703{ 3358 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 3359
2730void 3360void
2731down (SV *self) 3361down (...)
2732 CODE: 3362 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3364
3365void
3366wait (...)
3367 CODE:
3368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3369
2735void 3370void
2736try (SV *self) 3371try (SV *self)
2737 PPCODE: 3372 PPCODE:
2738{ 3373{
… …
2750 XSRETURN_NO; 3385 XSRETURN_NO;
2751} 3386}
2752 3387
2753void 3388void
2754waiters (SV *self) 3389waiters (SV *self)
2755 CODE: 3390 PPCODE:
2756{ 3391{
2757 AV *av = (AV *)SvRV (self); 3392 AV *av = (AV *)SvRV (self);
3393 int wcount = AvFILLp (av) + 1 - 1;
2758 3394
2759 if (GIMME_V == G_SCALAR) 3395 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3396 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3397 else
2762 { 3398 {
2763 int i; 3399 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3400 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3401 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3402 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3403 }
2768} 3404}
2769 3405
3406MODULE = Coro::State PACKAGE = Coro::Signal
3407
3408SV *
3409new (SV *klass)
3410 CODE:
3411 RETVAL = sv_bless (
3412 coro_waitarray_new (aTHX_ 0),
3413 GvSTASH (CvGV (cv))
3414 );
3415 OUTPUT:
3416 RETVAL
3417
3418void
3419wait (...)
3420 CODE:
3421 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3422
3423void
3424broadcast (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428 coro_signal_wake (aTHX_ av, AvFILLp (av));
3429}
3430
3431void
3432send (SV *self)
3433 CODE:
3434{
3435 AV *av = (AV *)SvRV (self);
3436
3437 if (AvFILLp (av))
3438 coro_signal_wake (aTHX_ av, 1);
3439 else
3440 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3441}
3442
3443IV
3444awaited (SV *self)
3445 CODE:
3446 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3447 OUTPUT:
3448 RETVAL
3449
3450
3451MODULE = Coro::State PACKAGE = Coro::AnyEvent
3452
3453BOOT:
3454 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3455
3456void
3457_schedule (...)
3458 CODE:
3459{
3460 static int incede;
3461
3462 api_cede_notself (aTHX);
3463
3464 ++incede;
3465 while (coro_nready >= incede && api_cede (aTHX))
3466 ;
3467
3468 sv_setsv (sv_activity, &PL_sv_undef);
3469 if (coro_nready >= incede)
3470 {
3471 PUSHMARK (SP);
3472 PUTBACK;
3473 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3474 }
3475
3476 --incede;
3477}
3478
3479
3480MODULE = Coro::State PACKAGE = Coro::AIO
3481
3482void
3483_register (char *target, char *proto, SV *req)
3484 CODE:
3485{
3486 CV *req_cv = coro_sv_2cv (aTHX_ req);
3487 /* newXSproto doesn't return the CV on 5.8 */
3488 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3489 sv_setpv ((SV *)slf_cv, proto);
3490 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3491}
3492

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