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Comparing Coro/Coro/State.xs (file contents):
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC vs.
Revision 1.346 by root, Tue Jun 9 18:56:45 2009 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 */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 244};
242 245
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 247typedef struct
245{ 248{
246 SV *defsv; 249 SV *defsv;
247 AV *defav; 250 AV *defav;
248 SV *errsv; 251 SV *errsv;
249 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
250#define VAR(name,type) type name; 254#define VAR(name,type) type name;
251# include "state.h" 255# include "state.h"
252#undef VAR 256#undef VAR
253} perl_slots; 257} perl_slots;
254 258
… …
257/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
258struct coro { 262struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 264 coro_cctx *cctx;
261 265
262 /* process data */ 266 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 267 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 268 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
266 270
271 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
276 void (*on_destroy)(pTHX_ struct coro *coro);
271 277
272 /* statistics */ 278 /* statistics */
273 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
274 280
275 /* coro process data */ 281 /* coro process data */
276 int prio; 282 int prio;
277 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
278 285
279 /* async_pool */ 286 /* async_pool */
280 SV *saved_deffh; 287 SV *saved_deffh;
288 SV *invoke_cb;
289 AV *invoke_av;
290
291 /* on_enter/on_leave */
292 AV *on_enter;
293 AV *on_leave;
281 294
282 /* linked list */ 295 /* linked list */
283 struct coro *next, *prev; 296 struct coro *next, *prev;
284}; 297};
285 298
286typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
288 301
302/* the following variables are effectively part of the perl context */
303/* and get copied between struct coro and these variables */
304/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 305static struct CoroSLF slf_frame; /* the current slf frame */
290 306
291/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
292 308
293#define PRIO_MAX 3 309#define PRIO_MAX 3
… …
299 315
300/* for Coro.pm */ 316/* for Coro.pm */
301static SV *coro_current; 317static SV *coro_current;
302static SV *coro_readyhook; 318static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 319static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
320static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 321static struct coro *coro_first;
305#define coro_nready coroapi.nready 322#define coro_nready coroapi.nready
306 323
307/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
308 325
… …
334 get_hv (name, create); 351 get_hv (name, create);
335#endif 352#endif
336 return get_hv (name, create); 353 return get_hv (name, create);
337} 354}
338 355
356/* may croak */
357INLINE CV *
358coro_sv_2cv (pTHX_ SV *sv)
359{
360 HV *st;
361 GV *gvp;
362 CV *cv = sv_2cv (sv, &st, &gvp, 0);
363
364 if (!cv)
365 croak ("code reference expected");
366
367 return cv;
368}
369
370/*****************************************************************************/
371/* magic glue */
372
373#define CORO_MAGIC_type_cv 26
374#define CORO_MAGIC_type_state PERL_MAGIC_ext
375
376#define CORO_MAGIC_NN(sv, type) \
377 (expect_true (SvMAGIC (sv)->mg_type == type) \
378 ? SvMAGIC (sv) \
379 : mg_find (sv, type))
380
381#define CORO_MAGIC(sv, type) \
382 (expect_true (SvMAGIC (sv)) \
383 ? CORO_MAGIC_NN (sv, type) \
384 : 0)
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388
389INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414
415/* faster than SvSTATE, but expects a coroutine hv */
416#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
417#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418
419/*****************************************************************************/
420/* padlist management and caching */
421
339static AV * 422static AV *
340coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
341{ 424{
342 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
344 427
345 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 434#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 436 --AvFILLp (padlist);
354 437
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
357 440
358 return newpadlist; 441 return newpadlist;
359} 442}
360 443
361static void 444static void
362free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
363{ 446{
364 /* may be during global destruction */ 447 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
366 { 449 {
367 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
368 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
369 { 453 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
371 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 456 I32 j = AvFILLp (av);
373 SV *sv; 457
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 463 }
380 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
382 } 469 }
383} 470}
384 471
385static int 472static int
… …
394 481
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 483
397 return 0; 484 return 0;
398} 485}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 486
403static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 488 0, 0, 0, 0,
405 coro_cv_free 489 coro_cv_free
406}; 490};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 491
444/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
445static void 493static void
446get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
447{ 495{
… …
453 else 501 else
454 { 502 {
455#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
462#else 510#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 512#endif
465 } 513 }
466} 514}
467 515
468static void 516static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 523 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 524
477 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
478 526
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
481 529
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 531}
484 532
485/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
486 537
487static void 538static void
488load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
489{ 540{
490 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
491 c->slot = 0; 542 c->slot = 0;
492 543
493 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
494 545
495 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
499 551
500 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 553 # include "state.h"
502 #undef VAR 554 #undef VAR
503 555
… …
515 } 567 }
516 568
517 PUTBACK; 569 PUTBACK;
518 } 570 }
519 571
520 slf_frame = c->slf_frame; 572 slf_frame = c->slf_frame;
573 CORO_THROW = c->except;
574
575 if (expect_false (c->on_enter))
576 {
577 int i;
578
579 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581 }
521} 582}
522 583
523static void 584static void
524save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
525{ 586{
587 if (expect_false (c->on_leave))
588 {
589 int i;
590
591 for (i = AvFILLp (c->on_leave); i >= 0; --i)
592 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
593 }
594
595 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 596 c->slf_frame = slf_frame;
527 597
528 { 598 {
529 dSP; 599 dSP;
530 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
… …
587 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
588 658
589 { 659 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 661
592 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
596 667
597 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 669 # include "state.h"
599 #undef VAR 670 #undef VAR
600 } 671 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
608 */ 679 */
609#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
611#else 682#else
612static void 683static void
613coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
614{ 685{
615 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 750 Safefree (PL_retstack);
680#endif 751#endif
681} 752}
682 753
754#define CORO_RSS \
755 rss += sizeof (SYM (curstackinfo)); \
756 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
757 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
758 rss += SYM (tmps_max) * sizeof (SV *); \
759 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
760 rss += SYM (scopestack_max) * sizeof (I32); \
761 rss += SYM (savestack_max) * sizeof (ANY);
762
683static size_t 763static size_t
684coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
685{ 765{
686 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
687 767
688 if (coro->mainstack) 768 if (coro->mainstack)
689 { 769 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
694 { 771 {
695 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
696 773 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 774 #undef SYM
700 } 775 }
701 else 776 else
702 slot = coro->slot;
703
704 if (slot)
705 { 777 {
706 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #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 } 781 }
718 } 782 }
719 783
720 return rss; 784 return rss;
721} 785}
… …
734#endif 798#endif
735 799
736/* 800/*
737 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 804 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 805 */
745static int 806static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 808{
748 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 863
803 if (svp) 864 if (svp)
804 { 865 {
805 SV *old = *svp; 866 SV *old = *svp;
806 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
808 return 0; 869 return 0;
809 } 870 }
810 } 871 }
811 872
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 884slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 885{
825 return 0; 886 return 0;
826} 887}
827 888
828static void 889static int
890slf_check_repeat (pTHX_ struct CoroSLF *frame)
891{
892 return 1;
893}
894
895static UNOP coro_setup_op;
896
897static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
830{ 899{
831 /* 900 /*
832 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
833 */ 902 */
… …
835 904
836 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 912 PL_curpm = 0;
841 PL_curpad = 0; 913 PL_curpad = 0;
842 PL_localizing = 0; 914 PL_localizing = 0;
843 PL_dirty = 0; 915 PL_dirty = 0;
844 PL_restartop = 0; 916 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 918 PL_parser = 0;
847#endif 919#endif
920 PL_hints = 0;
848 921
849 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 923 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); 924 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 925
853 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 929 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
930 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 933
860 { 934 {
861 dSP; 935 dSP;
862 UNOP myop; 936 UNOP myop;
863 937
864 Zero (&myop, 1, UNOP); 938 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
867 942
868 PUSHMARK (SP); 943 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 945 PUTBACK;
871 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 948 }
875 949
876 /* this newly created coroutine might be run on an existing cctx which most 950 /* 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. 951 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 952 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 953 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 */ 954 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 955
956 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957 coro_setup_op.op_next = PL_op;
958 coro_setup_op.op_type = OP_ENTERSUB;
959 coro_setup_op.op_ppaddr = pp_slf;
960 /* no flags etc. required, as an init function won't be called */
961
962 PL_op = (OP *)&coro_setup_op;
963
964 /* copy throw, in case it was set before coro_setup */
965 CORO_THROW = coro->except;
966}
967
883static void 968static void
884coro_destruct (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
885{ 970{
886 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
887 { 972 {
888 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
898 983
899 /* unwind main stack */ 984 /* unwind main stack */
900 dounwind (-1); 985 dounwind (-1);
901 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
902 993
903 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
904 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
905 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
906 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
907 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
909 1001
910 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
912 1004
913 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
915 1009
916 coro_destruct_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
917} 1011}
918 1012
919INLINE void 1013INLINE void
… …
929static int 1023static int
930runops_trace (pTHX) 1024runops_trace (pTHX)
931{ 1025{
932 COP *oldcop = 0; 1026 COP *oldcop = 0;
933 int oldcxix = -2; 1027 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1028
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1030 {
939 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
940 1032
941 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1034 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1035 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1036 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1038 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
948 SV **cb; 1040 SV **cb;
… …
985 1077
986 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
987 { 1079 {
988 SV **cb; 1080 SV **cb;
989 1081
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1083 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1085
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1087 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1088 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
1000 1091
1001 if (isGV (gv)) 1092 if (isGV (gv))
… …
1006 SAVETMPS; 1097 SAVETMPS;
1007 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1099 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1101 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1102 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1103 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1104 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); 1105 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1106 SPAGAIN;
1016 FREETMPS; 1107 FREETMPS;
… …
1019 } 1110 }
1020 1111
1021 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
1022 } 1113 }
1023 1114
1024 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1116 {
1026 dSP; 1117 dSP;
1027 1118
1028 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1120 ENTER;
… …
1048 1139
1049 TAINT_NOT; 1140 TAINT_NOT;
1050 return 0; 1141 return 0;
1051} 1142}
1052 1143
1144static struct CoroSLF cctx_ssl_frame;
1145
1053static void 1146static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1148{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1149 ta->prev = 0;
1058} 1150}
1059 1151
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1152static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1154{
1063/* also initialises PL_top_env */ 1155 *frame = cctx_ssl_frame;
1156
1157 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1158}
1159
1160/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1161static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1066{ 1163{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1071 1165
1072 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1074 1168
1075 Zero (&myop, 1, UNOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1171 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1172 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1173
1079 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1176
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1179}
1088 1180
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1181/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1182INLINE void
1091transfer_tail (pTHX) 1183transfer_tail (pTHX)
1092{ 1184{
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); 1185 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} 1186}
1109 1187
1110/* 1188/*
1111 * this is a _very_ stripped down perl interpreter ;) 1189 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1190 */
… …
1124 /* normally we would need to skip the entersub here */ 1202 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1203 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1204 /* PL_nop = PL_nop->op_next */
1127 1205
1128 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1130 1208
1131 /* cctx_run is the alternative tail of transfer() */ 1209 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1210 transfer_tail (aTHX);
1134 1211
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1212 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1214 perl_run (PL_curinterp);
1215 /*
1216 * Unfortunately, there is no way to get at the return values of the
1217 * coro body here, as perl_run destroys these
1218 */
1138 1219
1139 /* 1220 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1221 * 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) 1222 * 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 1223 * 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" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1225 * coroutine as Coro has no such concept.
1226 * This actually isn't valid with the pthread backend, but OSes requiring
1227 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1228 */
1146 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1230 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1231 }
1149} 1232}
… …
1226cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1227{ 1310{
1228 if (!cctx) 1311 if (!cctx)
1229 return; 1312 return;
1230 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1231 --cctx_count; 1316 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1317 coro_destroy (&cctx->cctx);
1233 1318
1234 /* coro_transfer creates new, empty cctx's */ 1319 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1320 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1294 1379
1295static void 1380static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1298 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1299 { 1386 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 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,"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1389
1303 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,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1392
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1396#endif
1313 } 1397 }
1314} 1398}
1315 1399
1316/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1317static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1403{
1320 dSTACKLEVEL; 1404 dSTACKLEVEL;
1321 1405
1322 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1407 if (expect_false (!prev))
1324 { 1408 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1409 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1410 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1411 }
1328 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1329 { 1413 {
1330 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1331 1415
1332 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1333 { 1417 {
1334 /* create a new empty/source context */ 1418 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1338 } 1421 }
1339 1422
1340 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1424 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1425
1345 /* first get rid of the old state */ 1426 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1427 save_perl (aTHX_ prev);
1347 1428
1348 if (expect_false (next->flags & CF_NEW)) 1429 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1354 } 1435 }
1355 else 1436 else
1356 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1357 1438
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1439 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1440 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1441 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1443 && !force_cctx
1365 )) 1444 ))
1366 { 1445 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1446 /* 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)); 1447 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1448
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 */ 1449 /* 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 */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1377 1454
1378 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1379 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1380 1459
1381 ++next->usecount; 1460 ++next->usecount;
1382 1461
1383 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1464
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1465 next->cctx = 0;
1387 transfer_next = next;
1388 1466
1389 if (expect_false (prev__cctx != next->cctx)) 1467 if (expect_false (cctx_prev != cctx_current))
1390 { 1468 {
1391 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1472 }
1395 1473
1396 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1397 } 1475 }
1398} 1476}
… …
1405static int 1483static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1485{
1408 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1409 return 0; 1487 return 0;
1488
1489 if (coro->on_destroy && !PL_dirty)
1490 coro->on_destroy (aTHX_ coro);
1410 1491
1411 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1412 1493
1413 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
1414 { 1495 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1496 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1497 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1498 --coro_nready;
1419 UNLOCK;
1420 } 1499 }
1421 else 1500 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1501 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1502
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1425 { 1507 {
1426 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1427 1509
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1510 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1429 1511
1430 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1431 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1432 1514
1433 coro_destruct (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1434 1516
1435 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1436 1518
1437 coro->slot = 0; 1519 coro->slot = 0;
1438 } 1520 }
1439 1521
1440 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1442 1526
1443 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1446 1530
… …
1500 1584
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1503} 1587}
1504 1588
1589/*****************************************************************************/
1590/* gensub: simple closure generation utility */
1591
1592#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594/* create a closure from XS, returns a code reference */
1595/* the arg can be accessed via GENSUB_ARG from the callback */
1596/* the callback must use dXSARGS/XSRETURN */
1597static SV *
1598gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599{
1600 CV *cv = (CV *)newSV (0);
1601
1602 sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604 CvANON_on (cv);
1605 CvISXSUB_on (cv);
1606 CvXSUB (cv) = xsub;
1607 GENSUB_ARG = arg;
1608
1609 return newRV_noinc ((SV *)cv);
1610}
1611
1505/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1506 1613
1507static void 1614INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1615coro_enq (pTHX_ struct coro *coro)
1509{ 1616{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1617 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1618}
1512 1619
1513static SV * 1620INLINE SV *
1514coro_deq (pTHX) 1621coro_deq (pTHX)
1515{ 1622{
1516 int prio; 1623 int prio;
1517 1624
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1625 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1527{ 1634{
1528 struct coro *coro; 1635 struct coro *coro;
1529 SV *sv_hook; 1636 SV *sv_hook;
1530 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1531 1638
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1536 1640
1537 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1538 return 0; 1642 return 0;
1539 1643
1540 coro->flags |= CF_READY; 1644 coro->flags |= CF_READY;
1541 1645
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1646 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1647 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1648
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1649 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1650 ++coro_nready;
1549 1651
1550 UNLOCK;
1551
1552 if (sv_hook) 1652 if (sv_hook)
1553 { 1653 {
1554 dSP; 1654 dSP;
1555 1655
1556 ENTER; 1656 ENTER;
1557 SAVETMPS; 1657 SAVETMPS;
1558 1658
1559 PUSHMARK (SP); 1659 PUSHMARK (SP);
1560 PUTBACK; 1660 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1662
1564 FREETMPS; 1663 FREETMPS;
1565 LEAVE; 1664 LEAVE;
1566 } 1665 }
1567 1666
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1576{ 1675{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1677}
1579 1678
1679/* expects to own a reference to next->hv */
1580INLINE void 1680INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1682{
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); 1683 SV *prev_sv = SvRV (coro_current);
1684
1627 ta->prev = SvSTATE (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1628 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1689
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1632 1691
1633 LOCK;
1634 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1636 UNLOCK; 1694}
1695
1696static void
1697prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698{
1699 for (;;)
1700 {
1701 SV *next_sv = coro_deq (aTHX);
1702
1703 if (expect_true (next_sv))
1704 {
1705 struct coro *next = SvSTATE_hv (next_sv);
1706
1707 /* cannot transfer to destroyed coros, skip and look for next */
1708 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1710 else
1711 {
1712 next->flags &= ~CF_READY;
1713 --coro_nready;
1714
1715 prepare_schedule_to (aTHX_ ta, next);
1716 break;
1717 }
1718 }
1719 else
1720 {
1721 /* nothing to schedule: call the idle handler */
1722 if (SvROK (sv_idle)
1723 && SvOBJECT (SvRV (sv_idle)))
1724 {
1725 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726 api_ready (aTHX_ SvRV (sv_idle));
1727 --coro_nready;
1728 }
1729 else
1730 {
1731 dSP;
1732
1733 ENTER;
1734 SAVETMPS;
1735
1736 PUSHMARK (SP);
1737 PUTBACK;
1738 call_sv (sv_idle, G_VOID | G_DISCARD);
1739
1740 FREETMPS;
1741 LEAVE;
1742 }
1743 }
1744 }
1637} 1745}
1638 1746
1639INLINE void 1747INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1749{
… …
1662{ 1770{
1663 struct coro_transfer_args ta; 1771 struct coro_transfer_args ta;
1664 1772
1665 prepare_schedule (aTHX_ &ta); 1773 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1774 TRANSFER (ta, 1);
1775}
1776
1777static void
1778api_schedule_to (pTHX_ SV *coro_sv)
1779{
1780 struct coro_transfer_args ta;
1781 struct coro *next = SvSTATE (coro_sv);
1782
1783 SvREFCNT_inc_NN (coro_sv);
1784 prepare_schedule_to (aTHX_ &ta, next);
1667} 1785}
1668 1786
1669static int 1787static int
1670api_cede (pTHX) 1788api_cede (pTHX)
1671{ 1789{
… …
1700static void 1818static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1820{
1703 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1704 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1705 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1706 { 1827 {
1707 if (!coro->cctx) 1828 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1829 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1832
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1834 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1836 {
… …
1718 if (coro->flags & CF_RUNNING) 1839 if (coro->flags & CF_RUNNING)
1719 PL_runops = RUNOPS_DEFAULT; 1840 PL_runops = RUNOPS_DEFAULT;
1720 else 1841 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1843 }
1844}
1845
1846static void
1847coro_call_on_destroy (pTHX_ struct coro *coro)
1848{
1849 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1850 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1851
1852 if (on_destroyp)
1853 {
1854 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1855
1856 while (AvFILLp (on_destroy) >= 0)
1857 {
1858 dSP; /* don't disturb outer sp */
1859 SV *cb = av_pop (on_destroy);
1860
1861 PUSHMARK (SP);
1862
1863 if (statusp)
1864 {
1865 int i;
1866 AV *status = (AV *)SvRV (*statusp);
1867 EXTEND (SP, AvFILLp (status) + 1);
1868
1869 for (i = 0; i <= AvFILLp (status); ++i)
1870 PUSHs (AvARRAY (status)[i]);
1871 }
1872
1873 PUTBACK;
1874 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1875 }
1876 }
1877}
1878
1879static void
1880slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1881{
1882 int i;
1883 HV *hv = (HV *)SvRV (coro_current);
1884 AV *av = newAV ();
1885
1886 av_extend (av, items - 1);
1887 for (i = 0; i < items; ++i)
1888 av_push (av, SvREFCNT_inc_NN (arg [i]));
1889
1890 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891
1892 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893 api_ready (aTHX_ sv_manager);
1894
1895 frame->prepare = prepare_schedule;
1896 frame->check = slf_check_repeat;
1897
1898 /* as a minor optimisation, we could unwind all stacks here */
1899 /* but that puts extra pressure on pp_slf, and is not worth much */
1900 /*coro_unwind_stacks (aTHX);*/
1901}
1902
1903/*****************************************************************************/
1904/* async pool handler */
1905
1906static int
1907slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1908{
1909 HV *hv = (HV *)SvRV (coro_current);
1910 struct coro *coro = (struct coro *)frame->data;
1911
1912 if (!coro->invoke_cb)
1913 return 1; /* loop till we have invoke */
1914 else
1915 {
1916 hv_store (hv, "desc", sizeof ("desc") - 1,
1917 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1918
1919 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1920
1921 {
1922 dSP;
1923 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1924 PUTBACK;
1925 }
1926
1927 SvREFCNT_dec (GvAV (PL_defgv));
1928 GvAV (PL_defgv) = coro->invoke_av;
1929 coro->invoke_av = 0;
1930
1931 return 0;
1932 }
1933}
1934
1935static void
1936slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1937{
1938 HV *hv = (HV *)SvRV (coro_current);
1939 struct coro *coro = SvSTATE_hv ((SV *)hv);
1940
1941 if (expect_true (coro->saved_deffh))
1942 {
1943 /* subsequent iteration */
1944 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1945 coro->saved_deffh = 0;
1946
1947 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1948 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1949 {
1950 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1951 coro->invoke_av = newAV ();
1952
1953 frame->prepare = prepare_nop;
1954 }
1955 else
1956 {
1957 av_clear (GvAV (PL_defgv));
1958 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1959
1960 coro->prio = 0;
1961
1962 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1963 api_trace (aTHX_ coro_current, 0);
1964
1965 frame->prepare = prepare_schedule;
1966 av_push (av_async_pool, SvREFCNT_inc (hv));
1967 }
1968 }
1969 else
1970 {
1971 /* first iteration, simply fall through */
1972 frame->prepare = prepare_nop;
1973 }
1974
1975 frame->check = slf_check_pool_handler;
1976 frame->data = (void *)coro;
1977}
1978
1979/*****************************************************************************/
1980/* rouse callback */
1981
1982#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1983
1984static void
1985coro_rouse_callback (pTHX_ CV *cv)
1986{
1987 dXSARGS;
1988 SV *data = (SV *)GENSUB_ARG;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 {
1992 /* first call, set args */
1993 SV *coro = SvRV (data);
1994 AV *av = newAV ();
1995
1996 SvRV_set (data, (SV *)av);
1997
1998 /* better take a full copy of the arguments */
1999 while (items--)
2000 av_store (av, items, newSVsv (ST (items)));
2001
2002 api_ready (aTHX_ coro);
2003 SvREFCNT_dec (coro);
2004 }
2005
2006 XSRETURN_EMPTY;
2007}
2008
2009static int
2010slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2011{
2012 SV *data = (SV *)frame->data;
2013
2014 if (CORO_THROW)
2015 return 0;
2016
2017 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2018 return 1;
2019
2020 /* now push all results on the stack */
2021 {
2022 dSP;
2023 AV *av = (AV *)SvRV (data);
2024 int i;
2025
2026 EXTEND (SP, AvFILLp (av) + 1);
2027 for (i = 0; i <= AvFILLp (av); ++i)
2028 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2029
2030 /* we have stolen the elements, so set length to zero and free */
2031 AvFILLp (av) = -1;
2032 av_undef (av);
2033
2034 PUTBACK;
2035 }
2036
2037 return 0;
2038}
2039
2040static void
2041slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 SV *cb;
2044
2045 if (items)
2046 cb = arg [0];
2047 else
2048 {
2049 struct coro *coro = SvSTATE_current;
2050
2051 if (!coro->rouse_cb)
2052 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2053
2054 cb = sv_2mortal (coro->rouse_cb);
2055 coro->rouse_cb = 0;
2056 }
2057
2058 if (!SvROK (cb)
2059 || SvTYPE (SvRV (cb)) != SVt_PVCV
2060 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2061 croak ("Coro::rouse_wait called with illegal callback argument,");
2062
2063 {
2064 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2065 SV *data = (SV *)GENSUB_ARG;
2066
2067 frame->data = (void *)data;
2068 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2069 frame->check = slf_check_rouse_wait;
2070 }
2071}
2072
2073static SV *
2074coro_new_rouse_cb (pTHX)
2075{
2076 HV *hv = (HV *)SvRV (coro_current);
2077 struct coro *coro = SvSTATE_hv (hv);
2078 SV *data = newRV_inc ((SV *)hv);
2079 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2080
2081 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2082 SvREFCNT_dec (data); /* magicext increases the refcount */
2083
2084 SvREFCNT_dec (coro->rouse_cb);
2085 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2086
2087 return cb;
2088}
2089
2090/*****************************************************************************/
2091/* schedule-like-function opcode (SLF) */
2092
2093static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2094static const CV *slf_cv;
2095static SV **slf_argv;
2096static int slf_argc, slf_arga; /* count, allocated */
2097static I32 slf_ax; /* top of stack, for restore */
2098
2099/* this restores the stack in the case we patched the entersub, to */
2100/* recreate the stack frame as perl will on following calls */
2101/* since entersub cleared the stack */
2102static OP *
2103pp_restore (pTHX)
2104{
2105 int i;
2106 SV **SP = PL_stack_base + slf_ax;
2107
2108 PUSHMARK (SP);
2109
2110 EXTEND (SP, slf_argc + 1);
2111
2112 for (i = 0; i < slf_argc; ++i)
2113 PUSHs (sv_2mortal (slf_argv [i]));
2114
2115 PUSHs ((SV *)CvGV (slf_cv));
2116
2117 RETURNOP (slf_restore.op_first);
2118}
2119
2120static void
2121slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2122{
2123 SV **arg = (SV **)slf_frame.data;
2124
2125 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2126}
2127
2128static void
2129slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (items != 2)
2132 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2133
2134 frame->prepare = slf_prepare_transfer;
2135 frame->check = slf_check_nop;
2136 frame->data = (void *)arg; /* let's hope it will stay valid */
2137}
2138
2139static void
2140slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_schedule;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2148{
2149 struct coro *next = (struct coro *)slf_frame.data;
2150
2151 SvREFCNT_inc_NN (next->hv);
2152 prepare_schedule_to (aTHX_ ta, next);
2153}
2154
2155static void
2156slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 if (!items)
2159 croak ("Coro::schedule_to expects a coroutine argument, caught");
2160
2161 frame->data = (void *)SvSTATE (arg [0]);
2162 frame->prepare = slf_prepare_schedule_to;
2163 frame->check = slf_check_nop;
2164}
2165
2166static void
2167slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2168{
2169 api_ready (aTHX_ SvRV (coro_current));
2170
2171 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2172}
2173
2174static void
2175slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 frame->prepare = prepare_cede;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2183{
2184 frame->prepare = prepare_cede_notself;
2185 frame->check = slf_check_nop;
2186}
2187
2188/*
2189 * these not obviously related functions are all rolled into one
2190 * function to increase chances that they all will call transfer with the same
2191 * stack offset
2192 * SLF stands for "schedule-like-function".
2193 */
2194static OP *
2195pp_slf (pTHX)
2196{
2197 I32 checkmark; /* mark SP to see how many elements check has pushed */
2198
2199 /* set up the slf frame, unless it has already been set-up */
2200 /* the latter happens when a new coro has been started */
2201 /* or when a new cctx was attached to an existing coroutine */
2202 if (expect_true (!slf_frame.prepare))
2203 {
2204 /* first iteration */
2205 dSP;
2206 SV **arg = PL_stack_base + TOPMARK + 1;
2207 int items = SP - arg; /* args without function object */
2208 SV *gv = *sp;
2209
2210 /* do a quick consistency check on the "function" object, and if it isn't */
2211 /* for us, divert to the real entersub */
2212 if (SvTYPE (gv) != SVt_PVGV
2213 || !GvCV (gv)
2214 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2215 return PL_ppaddr[OP_ENTERSUB](aTHX);
2216
2217 if (!(PL_op->op_flags & OPf_STACKED))
2218 {
2219 /* ampersand-form of call, use @_ instead of stack */
2220 AV *av = GvAV (PL_defgv);
2221 arg = AvARRAY (av);
2222 items = AvFILLp (av) + 1;
2223 }
2224
2225 /* now call the init function, which needs to set up slf_frame */
2226 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2227 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2228
2229 /* pop args */
2230 SP = PL_stack_base + POPMARK;
2231
2232 PUTBACK;
2233 }
2234
2235 /* now that we have a slf_frame, interpret it! */
2236 /* we use a callback system not to make the code needlessly */
2237 /* complicated, but so we can run multiple perl coros from one cctx */
2238
2239 do
2240 {
2241 struct coro_transfer_args ta;
2242
2243 slf_frame.prepare (aTHX_ &ta);
2244 TRANSFER (ta, 0);
2245
2246 checkmark = PL_stack_sp - PL_stack_base;
2247 }
2248 while (slf_frame.check (aTHX_ &slf_frame));
2249
2250 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2251
2252 /* exception handling */
2253 if (expect_false (CORO_THROW))
2254 {
2255 SV *exception = sv_2mortal (CORO_THROW);
2256
2257 CORO_THROW = 0;
2258 sv_setsv (ERRSV, exception);
2259 croak (0);
2260 }
2261
2262 /* return value handling - mostly like entersub */
2263 /* make sure we put something on the stack in scalar context */
2264 if (GIMME_V == G_SCALAR)
2265 {
2266 dSP;
2267 SV **bot = PL_stack_base + checkmark;
2268
2269 if (sp == bot) /* too few, push undef */
2270 bot [1] = &PL_sv_undef;
2271 else if (sp != bot + 1) /* too many, take last one */
2272 bot [1] = *sp;
2273
2274 SP = bot + 1;
2275
2276 PUTBACK;
2277 }
2278
2279 return NORMAL;
2280}
2281
2282static void
2283api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2284{
2285 int i;
2286 SV **arg = PL_stack_base + ax;
2287 int items = PL_stack_sp - arg + 1;
2288
2289 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2290
2291 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2292 && PL_op->op_ppaddr != pp_slf)
2293 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2294
2295 CvFLAGS (cv) |= CVf_SLF;
2296 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2297 slf_cv = cv;
2298
2299 /* we patch the op, and then re-run the whole call */
2300 /* we have to put the same argument on the stack for this to work */
2301 /* and this will be done by pp_restore */
2302 slf_restore.op_next = (OP *)&slf_restore;
2303 slf_restore.op_type = OP_CUSTOM;
2304 slf_restore.op_ppaddr = pp_restore;
2305 slf_restore.op_first = PL_op;
2306
2307 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2308
2309 if (PL_op->op_flags & OPf_STACKED)
2310 {
2311 if (items > slf_arga)
2312 {
2313 slf_arga = items;
2314 free (slf_argv);
2315 slf_argv = malloc (slf_arga * sizeof (SV *));
2316 }
2317
2318 slf_argc = items;
2319
2320 for (i = 0; i < items; ++i)
2321 slf_argv [i] = SvREFCNT_inc (arg [i]);
2322 }
2323 else
2324 slf_argc = 0;
2325
2326 PL_op->op_ppaddr = pp_slf;
2327 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2328
2329 PL_op = (OP *)&slf_restore;
2330}
2331
2332/*****************************************************************************/
2333/* dynamic wind */
2334
2335static void
2336on_enterleave_call (pTHX_ SV *cb)
2337{
2338 dSP;
2339
2340 PUSHSTACK;
2341
2342 PUSHMARK (SP);
2343 PUTBACK;
2344 call_sv (cb, G_VOID | G_DISCARD);
2345 SPAGAIN;
2346
2347 POPSTACK;
2348}
2349
2350static SV *
2351coro_avp_pop_and_free (pTHX_ AV **avp)
2352{
2353 AV *av = *avp;
2354 SV *res = av_pop (av);
2355
2356 if (AvFILLp (av) < 0)
2357 {
2358 *avp = 0;
2359 SvREFCNT_dec (av);
2360 }
2361
2362 return res;
2363}
2364
2365static void
2366coro_pop_on_enter (pTHX_ void *coro)
2367{
2368 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2369 SvREFCNT_dec (cb);
2370}
2371
2372static void
2373coro_pop_on_leave (pTHX_ void *coro)
2374{
2375 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2376 on_enterleave_call (aTHX_ sv_2mortal (cb));
1723} 2377}
1724 2378
1725/*****************************************************************************/ 2379/*****************************************************************************/
1726/* PerlIO::cede */ 2380/* PerlIO::cede */
1727 2381
… …
1796 PerlIOBuf_get_cnt, 2450 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2451 PerlIOBuf_set_ptrcnt,
1798}; 2452};
1799 2453
1800/*****************************************************************************/ 2454/*****************************************************************************/
2455/* Coro::Semaphore & Coro::Signal */
1801 2456
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP * 2457static SV *
1813pp_restore (pTHX) 2458coro_waitarray_new (pTHX_ int count)
1814{ 2459{
1815 dSP; 2460 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2461 AV *av = newAV ();
2462 SV **ary;
1816 2463
1817 PUSHMARK (SP); 2464 /* unfortunately, building manually saves memory */
2465 Newx (ary, 2, SV *);
2466 AvALLOC (av) = ary;
2467#if PERL_VERSION_ATLEAST (5,10,0)
2468 AvARRAY (av) = ary;
2469#else
2470 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2471 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2472 SvPVX ((SV *)av) = (char *)ary;
2473#endif
2474 AvMAX (av) = 1;
2475 AvFILLp (av) = 0;
2476 ary [0] = newSViv (count);
1818 2477
1819 EXTEND (SP, 3); 2478 return newRV_noinc ((SV *)av);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826} 2479}
1827 2480
1828static void 2481/* semaphore */
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833 2482
1834static void 2483static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2484coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2485{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2486 SV *count_sv = AvARRAY (av)[0];
2487 IV count = SvIVX (count_sv);
1838 2488
1839 frame->prepare = slf_prepare_set_stacklevel; 2489 count += adjust;
1840 frame->check = slf_check_nop; 2490 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2491
1844static void 2492 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2493 while (count > 0 && AvFILLp (av) > 0)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 { 2494 {
1903 /* first iteration */ 2495 SV *cb;
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908 2496
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2497 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2498 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2499 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2500 cb = av_shift (av);
1913 2501
1914 /* pop args */ 2502 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2503 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2504 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2505 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2506 }
1924 2507 else if (SvTYPE (cb) == SVt_PVCV)
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 { 2508 {
1955 if (sp == bot) 2509 dSP;
1956 XPUSHs (&PL_sv_undef); 2510 PUSHMARK (SP);
1957 2511 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2512 PUTBACK;
2513 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2514 }
1960 2515
1961 PUTBACK; 2516 SvREFCNT_dec (cb);
1962 } 2517 }
1963
1964 return NORMAL;
1965} 2518}
1966 2519
1967static void 2520static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2521coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1969{ 2522{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2523 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2524 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998} 2525}
1999
2000/*****************************************************************************/
2001 2526
2002static int 2527static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2528slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2529{
2005 AV *av = (AV *)frame->data; 2530 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2531 SV *count_sv = AvARRAY (av)[0];
2007 2532
2533 /* if we are about to throw, don't actually acquire the lock, just throw */
2534 if (CORO_THROW)
2535 return 0;
2008 if (SvIVX (count_sv) > 0) 2536 else if (SvIVX (count_sv) > 0)
2009 { 2537 {
2538 SvSTATE_current->on_destroy = 0;
2539
2540 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2541 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2542 else
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2011 return 0; 2545 return 0;
2012 } 2546 }
2013 else 2547 else
2014 { 2548 {
2015 int i; 2549 int i;
… …
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2558 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1; 2559 return 1;
2026 } 2560 }
2027} 2561}
2028 2562
2029static void 2563static int
2564slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2565{
2566 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2567}
2568
2569static int
2570slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2571{
2572 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2573}
2574
2575static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2576slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2577{
2032 AV *av = (AV *)SvRV (arg [0]); 2578 AV *av = (AV *)SvRV (arg [0]);
2033 2579
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2580 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2581 {
… …
2040 { 2586 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2587 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2588
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2589 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2590 frame->prepare = prepare_schedule;
2045 }
2046 2591
2592 /* to avoid race conditions when a woken-up coro gets terminated */
2593 /* we arrange for a temporary on_destroy that calls adjust (0) */
2594 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2595 }
2596}
2597
2598static void
2599slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2600{
2601 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 2602 frame->check = slf_check_semaphore_down;
2603}
2048 2604
2605static void
2606slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2607{
2608 if (items >= 2)
2609 {
2610 /* callback form */
2611 AV *av = (AV *)SvRV (arg [0]);
2612 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2613
2614 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2615
2616 if (SvIVX (AvARRAY (av)[0]) > 0)
2617 coro_semaphore_adjust (aTHX_ av, 0);
2618
2619 frame->prepare = prepare_nop;
2620 frame->check = slf_check_nop;
2621 }
2622 else
2623 {
2624 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2625 frame->check = slf_check_semaphore_wait;
2626 }
2627}
2628
2629/* signal */
2630
2631static void
2632coro_signal_wake (pTHX_ AV *av, int count)
2633{
2634 SvIVX (AvARRAY (av)[0]) = 0;
2635
2636 /* now signal count waiters */
2637 while (count > 0 && AvFILLp (av) > 0)
2638 {
2639 SV *cb;
2640
2641 /* swap first two elements so we can shift a waiter */
2642 cb = AvARRAY (av)[0];
2643 AvARRAY (av)[0] = AvARRAY (av)[1];
2644 AvARRAY (av)[1] = cb;
2645
2646 cb = av_shift (av);
2647
2648 api_ready (aTHX_ cb);
2649 sv_setiv (cb, 0); /* signal waiter */
2650 SvREFCNT_dec (cb);
2651
2652 --count;
2653 }
2654}
2655
2656static int
2657slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2658{
2659 /* if we are about to throw, also stop waiting */
2660 return SvROK ((SV *)frame->data) && !CORO_THROW;
2661}
2662
2663static void
2664slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2665{
2666 AV *av = (AV *)SvRV (arg [0]);
2667
2668 if (SvIVX (AvARRAY (av)[0]))
2669 {
2670 SvIVX (AvARRAY (av)[0]) = 0;
2671 frame->prepare = prepare_nop;
2672 frame->check = slf_check_nop;
2673 }
2674 else
2675 {
2676 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2677
2678 av_push (av, waiter);
2679
2680 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2681 frame->prepare = prepare_schedule;
2682 frame->check = slf_check_signal_wait;
2683 }
2049} 2684}
2050 2685
2051/*****************************************************************************/ 2686/*****************************************************************************/
2687/* Coro::AIO */
2052 2688
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2689#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 2690
2055/* create a closure from XS, returns a code reference */ 2691/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 2692struct io_state
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{ 2693{
2061 CV *cv = (CV *)NEWSV (0, 0); 2694 int errorno;
2695 I32 laststype; /* U16 in 5.10.0 */
2696 int laststatval;
2697 Stat_t statcache;
2698};
2062 2699
2700static void
2701coro_aio_callback (pTHX_ CV *cv)
2702{
2703 dXSARGS;
2704 AV *state = (AV *)GENSUB_ARG;
2705 SV *coro = av_pop (state);
2706 SV *data_sv = newSV (sizeof (struct io_state));
2707
2708 av_extend (state, items - 1);
2709
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 2710 sv_upgrade (data_sv, SVt_PV);
2711 SvCUR_set (data_sv, sizeof (struct io_state));
2712 SvPOK_only (data_sv);
2064 2713
2065 CvANON_on (cv); 2714 {
2066 CvISXSUB_on (cv); 2715 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069 2716
2070 return newRV_noinc ((SV *)cv); 2717 data->errorno = errno;
2718 data->laststype = PL_laststype;
2719 data->laststatval = PL_laststatval;
2720 data->statcache = PL_statcache;
2721 }
2722
2723 /* now build the result vector out of all the parameters and the data_sv */
2724 {
2725 int i;
2726
2727 for (i = 0; i < items; ++i)
2728 av_push (state, SvREFCNT_inc_NN (ST (i)));
2729 }
2730
2731 av_push (state, data_sv);
2732
2733 api_ready (aTHX_ coro);
2734 SvREFCNT_dec (coro);
2735 SvREFCNT_dec ((AV *)state);
2736}
2737
2738static int
2739slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2740{
2741 AV *state = (AV *)frame->data;
2742
2743 /* if we are about to throw, return early */
2744 /* this does not cancel the aio request, but at least */
2745 /* it quickly returns */
2746 if (CORO_THROW)
2747 return 0;
2748
2749 /* one element that is an RV? repeat! */
2750 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2751 return 1;
2752
2753 /* restore status */
2754 {
2755 SV *data_sv = av_pop (state);
2756 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2757
2758 errno = data->errorno;
2759 PL_laststype = data->laststype;
2760 PL_laststatval = data->laststatval;
2761 PL_statcache = data->statcache;
2762
2763 SvREFCNT_dec (data_sv);
2764 }
2765
2766 /* push result values */
2767 {
2768 dSP;
2769 int i;
2770
2771 EXTEND (SP, AvFILLp (state) + 1);
2772 for (i = 0; i <= AvFILLp (state); ++i)
2773 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2774
2775 PUTBACK;
2776 }
2777
2778 return 0;
2779}
2780
2781static void
2782slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2783{
2784 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2785 SV *coro_hv = SvRV (coro_current);
2786 struct coro *coro = SvSTATE_hv (coro_hv);
2787
2788 /* put our coroutine id on the state arg */
2789 av_push (state, SvREFCNT_inc_NN (coro_hv));
2790
2791 /* first see whether we have a non-zero priority and set it as AIO prio */
2792 if (coro->prio)
2793 {
2794 dSP;
2795
2796 static SV *prio_cv;
2797 static SV *prio_sv;
2798
2799 if (expect_false (!prio_cv))
2800 {
2801 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2802 prio_sv = newSViv (0);
2803 }
2804
2805 PUSHMARK (SP);
2806 sv_setiv (prio_sv, coro->prio);
2807 XPUSHs (prio_sv);
2808
2809 PUTBACK;
2810 call_sv (prio_cv, G_VOID | G_DISCARD);
2811 }
2812
2813 /* now call the original request */
2814 {
2815 dSP;
2816 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2817 int i;
2818
2819 PUSHMARK (SP);
2820
2821 /* first push all args to the stack */
2822 EXTEND (SP, items + 1);
2823
2824 for (i = 0; i < items; ++i)
2825 PUSHs (arg [i]);
2826
2827 /* now push the callback closure */
2828 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2829
2830 /* now call the AIO function - we assume our request is uncancelable */
2831 PUTBACK;
2832 call_sv ((SV *)req, G_VOID | G_DISCARD);
2833 }
2834
2835 /* now that the requets is going, we loop toll we have a result */
2836 frame->data = (void *)state;
2837 frame->prepare = prepare_schedule;
2838 frame->check = slf_check_aio_req;
2839}
2840
2841static void
2842coro_aio_req_xs (pTHX_ CV *cv)
2843{
2844 dXSARGS;
2845
2846 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2847
2848 XSRETURN_EMPTY;
2071} 2849}
2072 2850
2073/*****************************************************************************/ 2851/*****************************************************************************/
2074 2852
2853#if CORO_CLONE
2854# include "clone.c"
2855#endif
2856
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2857MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 2858
2077PROTOTYPES: DISABLE 2859PROTOTYPES: DISABLE
2078 2860
2079BOOT: 2861BOOT:
2080{ 2862{
2081#ifdef USE_ITHREADS 2863#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 2864# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 2865 coro_thx = PERL_GET_CONTEXT;
2085# endif 2866# endif
2086#endif 2867#endif
2087 BOOT_PAGESIZE; 2868 BOOT_PAGESIZE;
2869
2870 cctx_current = cctx_new_empty ();
2088 2871
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2872 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2873 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 2874
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2875 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2107 main_mainstack = PL_mainstack; 2890 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 2891 main_top_env = PL_top_env;
2109 2892
2110 while (main_top_env->je_prev) 2893 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 2894 main_top_env = main_top_env->je_prev;
2895
2896 {
2897 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2898
2899 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2900 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2901
2902 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2903 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2904 }
2112 2905
2113 coroapi.ver = CORO_API_VERSION; 2906 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 2907 coroapi.rev = CORO_API_REVISION;
2115 2908
2116 coroapi.transfer = api_transfer; 2909 coroapi.transfer = api_transfer;
… …
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2927 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2135} 2928}
2136 2929
2137SV * 2930SV *
2138new (char *klass, ...) 2931new (char *klass, ...)
2932 ALIAS:
2933 Coro::new = 1
2139 CODE: 2934 CODE:
2140{ 2935{
2141 struct coro *coro; 2936 struct coro *coro;
2142 MAGIC *mg; 2937 MAGIC *mg;
2143 HV *hv; 2938 HV *hv;
2939 CV *cb;
2144 int i; 2940 int i;
2941
2942 if (items > 1)
2943 {
2944 cb = coro_sv_2cv (aTHX_ ST (1));
2945
2946 if (!ix)
2947 {
2948 if (CvISXSUB (cb))
2949 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2950
2951 if (!CvROOT (cb))
2952 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2953 }
2954 }
2145 2955
2146 Newz (0, coro, 1, struct coro); 2956 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV (); 2957 coro->args = newAV ();
2148 coro->flags = CF_NEW; 2958 coro->flags = CF_NEW;
2149 2959
… …
2154 coro->hv = hv = newHV (); 2964 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2965 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP; 2966 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2967 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158 2968
2969 if (items > 1)
2970 {
2159 av_extend (coro->args, items - 1); 2971 av_extend (coro->args, items - 1 + ix - 1);
2972
2973 if (ix)
2974 {
2975 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2976 cb = cv_coro_run;
2977 }
2978
2979 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2980
2160 for (i = 1; i < items; i++) 2981 for (i = 2; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i))); 2982 av_push (coro->args, newSVsv (ST (i)));
2983 }
2162} 2984}
2163 OUTPUT: 2985 OUTPUT:
2164 RETVAL 2986 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 2987
2171void 2988void
2172transfer (...) 2989transfer (...)
2173 PROTOTYPE: $$ 2990 PROTOTYPE: $$
2174 CODE: 2991 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2992 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 2993
2177bool 2994bool
2178_destroy (SV *coro_sv) 2995_destroy (SV *coro_sv)
2179 CODE: 2996 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2997 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2184void 3001void
2185_exit (int code) 3002_exit (int code)
2186 PROTOTYPE: $ 3003 PROTOTYPE: $
2187 CODE: 3004 CODE:
2188 _exit (code); 3005 _exit (code);
3006
3007SV *
3008clone (Coro::State coro)
3009 CODE:
3010{
3011#if CORO_CLONE
3012 struct coro *ncoro = coro_clone (aTHX_ coro);
3013 MAGIC *mg;
3014 /* TODO: too much duplication */
3015 ncoro->hv = newHV ();
3016 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3017 mg->mg_flags |= MGf_DUP;
3018 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3019#else
3020 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3021#endif
3022}
3023 OUTPUT:
3024 RETVAL
2189 3025
2190int 3026int
2191cctx_stacksize (int new_stacksize = 0) 3027cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3028 PROTOTYPE: ;$
2193 CODE: 3029 CODE:
… …
2243 eval = 1 3079 eval = 1
2244 CODE: 3080 CODE:
2245{ 3081{
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3082 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2247 { 3083 {
2248 struct coro temp; 3084 struct coro *current = SvSTATE_current;
2249 3085
2250 if (!(coro->flags & CF_RUNNING)) 3086 if (current != coro)
2251 { 3087 {
2252 PUTBACK; 3088 PUTBACK;
2253 save_perl (aTHX_ &temp); 3089 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3090 load_perl (aTHX_ coro);
3091 SPAGAIN;
2255 } 3092 }
2256 3093
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3094 PUSHSTACK;
3095
2263 PUSHMARK (SP); 3096 PUSHMARK (SP);
3097 PUTBACK;
2264 3098
2265 if (ix) 3099 if (ix)
2266 eval_sv (coderef, 0); 3100 eval_sv (coderef, 0);
2267 else 3101 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3102 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3103
2270 POPSTACK; 3104 POPSTACK;
2271 SPAGAIN; 3105 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3106
2277 if (!(coro->flags & CF_RUNNING)) 3107 if (current != coro)
2278 { 3108 {
3109 PUTBACK;
2279 save_perl (aTHX_ coro); 3110 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3111 load_perl (aTHX_ current);
2281 SPAGAIN; 3112 SPAGAIN;
2282 } 3113 }
2283 } 3114 }
2284} 3115}
2285 3116
… …
2289 ALIAS: 3120 ALIAS:
2290 is_ready = CF_READY 3121 is_ready = CF_READY
2291 is_running = CF_RUNNING 3122 is_running = CF_RUNNING
2292 is_new = CF_NEW 3123 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3124 is_destroyed = CF_DESTROYED
3125 is_suspended = CF_SUSPENDED
2294 CODE: 3126 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3127 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3128 OUTPUT:
2297 RETVAL 3129 RETVAL
2298 3130
2299void 3131void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3132throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3133 PROTOTYPE: $;$
2302 CODE: 3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
2303 SvREFCNT_dec (self->throw); 3138 SvREFCNT_dec (*throwp);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
2305 3141
2306void 3142void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3144 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3145 C_ARGS: aTHX_ coro, flags
2310 3146
2311SV * 3147SV *
2312has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3149 PROTOTYPE: $
2314 CODE: 3150 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3153 OUTPUT:
2317 RETVAL 3154 RETVAL
2318 3155
2319int 3156int
2320is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2340 3177
2341void 3178void
2342force_cctx () 3179force_cctx ()
2343 PROTOTYPE: 3180 PROTOTYPE:
2344 CODE: 3181 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2347 3183
2348void 3184void
2349swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3186 PROTOTYPE: $
2351 ALIAS: 3187 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3196
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3198 }
2363 3199
3200void
3201cancel (Coro::State self)
3202 CODE:
3203 coro_state_destroy (aTHX_ self);
3204 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3205
3206
2364MODULE = Coro::State PACKAGE = Coro 3207MODULE = Coro::State PACKAGE = Coro
2365 3208
2366BOOT: 3209BOOT:
2367{ 3210{
2368 int i; 3211 int i;
2369 3212
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3213 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3214 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3215 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3216 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3217 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 3218 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3219 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3220 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3221 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3222
3223 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3224 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3225 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3226 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2376 3227
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3228 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3229
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3230 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3231 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2388 3239
2389 { 3240 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3241 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3242
2392 coroapi.schedule = api_schedule; 3243 coroapi.schedule = api_schedule;
3244 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3245 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3246 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3247 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3248 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3249 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3250 coroapi.current = coro_current;
2399 3251
2400 GCoroAPI = &coroapi; 3252 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3253 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3254 SvREADONLY_on (sv);
2403 } 3255 }
2404} 3256}
2405 3257
2406void 3258void
3259terminate (...)
3260 CODE:
3261 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3262
3263void
2407schedule (...) 3264schedule (...)
2408 CODE: 3265 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3266 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3267
3268void
3269schedule_to (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3272
3273void
3274cede_to (...)
3275 CODE:
3276 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 3277
2411void 3278void
2412cede (...) 3279cede (...)
2413 CODE: 3280 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3281 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3282
2416void 3283void
2417cede_notself (...) 3284cede_notself (...)
2418 CODE: 3285 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3286 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 3287
2421void 3288void
2422_set_current (SV *current) 3289_set_current (SV *current)
2423 PROTOTYPE: $ 3290 PROTOTYPE: $
2424 CODE: 3291 CODE:
… …
2427 3294
2428void 3295void
2429_set_readyhook (SV *hook) 3296_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3297 PROTOTYPE: $
2431 CODE: 3298 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3299 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3300 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
2436 3301
2437int 3302int
2438prio (Coro::State coro, int newprio = 0) 3303prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3304 PROTOTYPE: $;$
2440 ALIAS: 3305 ALIAS:
… …
2471 CODE: 3336 CODE:
2472 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2473 OUTPUT: 3338 OUTPUT:
2474 RETVAL 3339 RETVAL
2475 3340
2476# for async_pool speedup
2477void 3341void
2478_pool_1 (SV *cb) 3342suspend (Coro::State self)
3343 PROTOTYPE: $
2479 CODE: 3344 CODE:
2480{ 3345 self->flags |= CF_SUSPENDED;
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487
2488 if (!invoke)
2489 {
2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
2493 croak ("\3async_pool terminate\2\n");
2494 }
2495
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 {
2509 av_fill (defav, len - 1);
2510 for (i = 0; i < len; ++i)
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2512 }
2513}
2514 3346
2515void 3347void
2516_pool_2 (SV *cb) 3348resume (Coro::State self)
3349 PROTOTYPE: $
2517 CODE: 3350 CODE:
2518{ 3351 self->flags &= ~CF_SUSPENDED;
2519 struct coro *coro = SvSTATE (coro_current);
2520
2521 sv_setsv (cb, &PL_sv_undef);
2522
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = Coro::AIO
2549 3352
2550void 3353void
2551_get_state (SV *self) 3354_pool_handler (...)
3355 CODE:
3356 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3357
3358void
3359async_pool (SV *cv, ...)
2552 PROTOTYPE: $ 3360 PROTOTYPE: &@
2553 PPCODE: 3361 PPCODE:
2554{ 3362{
2555 AV *defav = GvAV (PL_defgv); 3363 HV *hv = (HV *)av_pop (av_async_pool);
2556 AV *av = newAV (); 3364 AV *av = newAV ();
3365 SV *cb = ST (0);
2557 int i; 3366 int i;
2558 SV *data_sv = newSV (sizeof (struct io_state));
2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2560 SvCUR_set (data_sv, sizeof (struct io_state));
2561 SvPOK_only (data_sv);
2562 3367
2563 data->errorno = errno; 3368 av_extend (av, items - 2);
2564 data->laststype = PL_laststype; 3369 for (i = 1; i < items; ++i)
2565 data->laststatval = PL_laststatval;
2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3370 av_push (av, SvREFCNT_inc_NN (ST (i)));
2572 3371
2573 av_push (av, data_sv); 3372 if ((SV *)hv == &PL_sv_undef)
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2578}
2579
2580void
2581_set_state (SV *state)
2582 PROTOTYPE: $
2583 PPCODE:
2584{
2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2588
2589 errno = data->errorno;
2590 PL_laststype = data->laststype;
2591 PL_laststatval = data->laststatval;
2592 PL_statcache = data->statcache;
2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 { 3373 {
2620 PUSHMARK (SP); 3374 PUSHMARK (SP);
3375 EXTEND (SP, 2);
3376 PUSHs (sv_Coro);
3377 PUSHs ((SV *)cv_pool_handler);
2621 PUTBACK; 3378 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3379 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2623 SPAGAIN; 3380 SPAGAIN;
3381
3382 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2624 } 3383 }
2625 3384
2626 --incede; 3385 {
3386 struct coro *coro = SvSTATE_hv (hv);
3387
3388 assert (!coro->invoke_cb);
3389 assert (!coro->invoke_av);
3390 coro->invoke_cb = SvREFCNT_inc (cb);
3391 coro->invoke_av = av;
3392 }
3393
3394 api_ready (aTHX_ (SV *)hv);
3395
3396 if (GIMME_V != G_VOID)
3397 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3398 else
3399 SvREFCNT_dec (hv);
3400}
3401
3402SV *
3403rouse_cb ()
3404 PROTOTYPE:
3405 CODE:
3406 RETVAL = coro_new_rouse_cb (aTHX);
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411rouse_wait (...)
3412 PROTOTYPE: ;$
3413 PPCODE:
3414 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3415
3416void
3417on_enter (SV *block)
3418 ALIAS:
3419 on_leave = 1
3420 PROTOTYPE: &
3421 CODE:
3422{
3423 struct coro *coro = SvSTATE_current;
3424 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3425
3426 block = (SV *)coro_sv_2cv (aTHX_ block);
3427
3428 if (!*avp)
3429 *avp = newAV ();
3430
3431 av_push (*avp, SvREFCNT_inc (block));
3432
3433 if (!ix)
3434 on_enterleave_call (aTHX_ block);
3435
3436 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3437 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3438 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627} 3439}
2628 3440
2629 3441
2630MODULE = Coro::State PACKAGE = PerlIO::cede 3442MODULE = Coro::State PACKAGE = PerlIO::cede
2631 3443
2632BOOT: 3444BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3445 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 3446
3447
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 3448MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 3449
2637SV * 3450SV *
2638new (SV *klass, SV *count_ = 0) 3451new (SV *klass, SV *count = 0)
2639 CODE: 3452 CODE:
2640{ 3453 RETVAL = sv_bless (
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3454 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2642 AV *av = newAV (); 3455 GvSTASH (CvGV (cv))
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3456 );
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3457 OUTPUT:
2645} 3458 RETVAL
3459
3460# helper for Coro::Channel and others
3461SV *
3462_alloc (int count)
3463 CODE:
3464 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 3465 OUTPUT:
2647 RETVAL 3466 RETVAL
2648 3467
2649SV * 3468SV *
2650count (SV *self) 3469count (SV *self)
… …
2656void 3475void
2657up (SV *self, int adjust = 1) 3476up (SV *self, int adjust = 1)
2658 ALIAS: 3477 ALIAS:
2659 adjust = 1 3478 adjust = 1
2660 CODE: 3479 CODE:
2661{ 3480 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687 3481
2688void 3482void
2689down (SV *self) 3483down (...)
2690 CODE: 3484 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3485 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3486
3487void
3488wait (...)
3489 CODE:
3490 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 3491
2693void 3492void
2694try (SV *self) 3493try (SV *self)
2695 PPCODE: 3494 PPCODE:
2696{ 3495{
… …
2708 XSRETURN_NO; 3507 XSRETURN_NO;
2709} 3508}
2710 3509
2711void 3510void
2712waiters (SV *self) 3511waiters (SV *self)
2713 CODE: 3512 PPCODE:
2714{ 3513{
2715 AV *av = (AV *)SvRV (self); 3514 AV *av = (AV *)SvRV (self);
3515 int wcount = AvFILLp (av) + 1 - 1;
2716 3516
2717 if (GIMME_V == G_SCALAR) 3517 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3518 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 3519 else
2720 { 3520 {
2721 int i; 3521 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 3522 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 3523 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 3524 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 3525 }
2726} 3526}
2727 3527
3528MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3529
3530void
3531_may_delete (SV *sem, int count, int extra_refs)
3532 PPCODE:
3533{
3534 AV *av = (AV *)SvRV (sem);
3535
3536 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3537 && AvFILLp (av) == 0 /* no waiters, just count */
3538 && SvIV (AvARRAY (av)[0]) == count)
3539 XSRETURN_YES;
3540
3541 XSRETURN_NO;
3542}
3543
3544MODULE = Coro::State PACKAGE = Coro::Signal
3545
3546SV *
3547new (SV *klass)
3548 CODE:
3549 RETVAL = sv_bless (
3550 coro_waitarray_new (aTHX_ 0),
3551 GvSTASH (CvGV (cv))
3552 );
3553 OUTPUT:
3554 RETVAL
3555
3556void
3557wait (...)
3558 CODE:
3559 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3560
3561void
3562broadcast (SV *self)
3563 CODE:
3564{
3565 AV *av = (AV *)SvRV (self);
3566 coro_signal_wake (aTHX_ av, AvFILLp (av));
3567}
3568
3569void
3570send (SV *self)
3571 CODE:
3572{
3573 AV *av = (AV *)SvRV (self);
3574
3575 if (AvFILLp (av))
3576 coro_signal_wake (aTHX_ av, 1);
3577 else
3578 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3579}
3580
3581IV
3582awaited (SV *self)
3583 CODE:
3584 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3585 OUTPUT:
3586 RETVAL
3587
3588
3589MODULE = Coro::State PACKAGE = Coro::AnyEvent
3590
3591BOOT:
3592 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3593
3594void
3595_schedule (...)
3596 CODE:
3597{
3598 static int incede;
3599
3600 api_cede_notself (aTHX);
3601
3602 ++incede;
3603 while (coro_nready >= incede && api_cede (aTHX))
3604 ;
3605
3606 sv_setsv (sv_activity, &PL_sv_undef);
3607 if (coro_nready >= incede)
3608 {
3609 PUSHMARK (SP);
3610 PUTBACK;
3611 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3612 }
3613
3614 --incede;
3615}
3616
3617
3618MODULE = Coro::State PACKAGE = Coro::AIO
3619
3620void
3621_register (char *target, char *proto, SV *req)
3622 CODE:
3623{
3624 CV *req_cv = coro_sv_2cv (aTHX_ req);
3625 /* newXSproto doesn't return the CV on 5.8 */
3626 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3627 sv_setpv ((SV *)slf_cv, proto);
3628 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3629}
3630

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