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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 1.343 by root, Mon Dec 15 16:41:43 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_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)
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 AV *av = newAV ();
1994 SV *coro = SvRV (data);
1995
1996 SvRV_set (data, (SV *)av);
1997 api_ready (aTHX_ coro);
1998 SvREFCNT_dec (coro);
1999
2000 /* better take a full copy of the arguments */
2001 while (items--)
2002 av_store (av, items, newSVsv (ST (items)));
2003 }
2004
2005 XSRETURN_EMPTY;
2006}
2007
2008static int
2009slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2010{
2011 SV *data = (SV *)frame->data;
2012
2013 if (CORO_THROW)
2014 return 0;
2015
2016 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2017 return 1;
2018
2019 /* now push all results on the stack */
2020 {
2021 dSP;
2022 AV *av = (AV *)SvRV (data);
2023 int i;
2024
2025 EXTEND (SP, AvFILLp (av) + 1);
2026 for (i = 0; i <= AvFILLp (av); ++i)
2027 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2028
2029 /* we have stolen the elements, so ste length to zero and free */
2030 AvFILLp (av) = -1;
2031 av_undef (av);
2032
2033 PUTBACK;
2034 }
2035
2036 return 0;
2037}
2038
2039static void
2040slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2041{
2042 SV *cb;
2043
2044 if (items)
2045 cb = arg [0];
2046 else
2047 {
2048 struct coro *coro = SvSTATE_current;
2049
2050 if (!coro->rouse_cb)
2051 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2052
2053 cb = sv_2mortal (coro->rouse_cb);
2054 coro->rouse_cb = 0;
2055 }
2056
2057 if (!SvROK (cb)
2058 || SvTYPE (SvRV (cb)) != SVt_PVCV
2059 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2060 croak ("Coro::rouse_wait called with illegal callback argument,");
2061
2062 {
2063 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2064 SV *data = (SV *)GENSUB_ARG;
2065
2066 frame->data = (void *)data;
2067 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2068 frame->check = slf_check_rouse_wait;
2069 }
2070}
2071
2072static SV *
2073coro_new_rouse_cb (pTHX)
2074{
2075 HV *hv = (HV *)SvRV (coro_current);
2076 struct coro *coro = SvSTATE_hv (hv);
2077 SV *data = newRV_inc ((SV *)hv);
2078 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2079
2080 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2081 SvREFCNT_dec (data); /* magicext increases the refcount */
2082
2083 SvREFCNT_dec (coro->rouse_cb);
2084 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2085
2086 return cb;
2087}
2088
2089/*****************************************************************************/
2090/* schedule-like-function opcode (SLF) */
2091
2092static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2093static const CV *slf_cv;
2094static SV **slf_argv;
2095static int slf_argc, slf_arga; /* count, allocated */
2096static I32 slf_ax; /* top of stack, for restore */
2097
2098/* this restores the stack in the case we patched the entersub, to */
2099/* recreate the stack frame as perl will on following calls */
2100/* since entersub cleared the stack */
2101static OP *
2102pp_restore (pTHX)
2103{
2104 int i;
2105 SV **SP = PL_stack_base + slf_ax;
2106
2107 PUSHMARK (SP);
2108
2109 EXTEND (SP, slf_argc + 1);
2110
2111 for (i = 0; i < slf_argc; ++i)
2112 PUSHs (sv_2mortal (slf_argv [i]));
2113
2114 PUSHs ((SV *)CvGV (slf_cv));
2115
2116 RETURNOP (slf_restore.op_first);
2117}
2118
2119static void
2120slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2121{
2122 SV **arg = (SV **)slf_frame.data;
2123
2124 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2125}
2126
2127static void
2128slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 if (items != 2)
2131 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2132
2133 frame->prepare = slf_prepare_transfer;
2134 frame->check = slf_check_nop;
2135 frame->data = (void *)arg; /* let's hope it will stay valid */
2136}
2137
2138static void
2139slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2140{
2141 frame->prepare = prepare_schedule;
2142 frame->check = slf_check_nop;
2143}
2144
2145static void
2146slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2147{
2148 struct coro *next = (struct coro *)slf_frame.data;
2149
2150 SvREFCNT_inc_NN (next->hv);
2151 prepare_schedule_to (aTHX_ ta, next);
2152}
2153
2154static void
2155slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 if (!items)
2158 croak ("Coro::schedule_to expects a coroutine argument, caught");
2159
2160 frame->data = (void *)SvSTATE (arg [0]);
2161 frame->prepare = slf_prepare_schedule_to;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2167{
2168 api_ready (aTHX_ SvRV (coro_current));
2169
2170 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2171}
2172
2173static void
2174slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 frame->prepare = prepare_cede;
2177 frame->check = slf_check_nop;
2178}
2179
2180static void
2181slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2182{
2183 frame->prepare = prepare_cede_notself;
2184 frame->check = slf_check_nop;
2185}
2186
2187/*
2188 * these not obviously related functions are all rolled into one
2189 * function to increase chances that they all will call transfer with the same
2190 * stack offset
2191 * SLF stands for "schedule-like-function".
2192 */
2193static OP *
2194pp_slf (pTHX)
2195{
2196 I32 checkmark; /* mark SP to see how many elements check has pushed */
2197
2198 /* set up the slf frame, unless it has already been set-up */
2199 /* the latter happens when a new coro has been started */
2200 /* or when a new cctx was attached to an existing coroutine */
2201 if (expect_true (!slf_frame.prepare))
2202 {
2203 /* first iteration */
2204 dSP;
2205 SV **arg = PL_stack_base + TOPMARK + 1;
2206 int items = SP - arg; /* args without function object */
2207 SV *gv = *sp;
2208
2209 /* do a quick consistency check on the "function" object, and if it isn't */
2210 /* for us, divert to the real entersub */
2211 if (SvTYPE (gv) != SVt_PVGV
2212 || !GvCV (gv)
2213 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2214 return PL_ppaddr[OP_ENTERSUB](aTHX);
2215
2216 if (!(PL_op->op_flags & OPf_STACKED))
2217 {
2218 /* ampersand-form of call, use @_ instead of stack */
2219 AV *av = GvAV (PL_defgv);
2220 arg = AvARRAY (av);
2221 items = AvFILLp (av) + 1;
2222 }
2223
2224 /* now call the init function, which needs to set up slf_frame */
2225 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2226 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2227
2228 /* pop args */
2229 SP = PL_stack_base + POPMARK;
2230
2231 PUTBACK;
2232 }
2233
2234 /* now that we have a slf_frame, interpret it! */
2235 /* we use a callback system not to make the code needlessly */
2236 /* complicated, but so we can run multiple perl coros from one cctx */
2237
2238 do
2239 {
2240 struct coro_transfer_args ta;
2241
2242 slf_frame.prepare (aTHX_ &ta);
2243 TRANSFER (ta, 0);
2244
2245 checkmark = PL_stack_sp - PL_stack_base;
2246 }
2247 while (slf_frame.check (aTHX_ &slf_frame));
2248
2249 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2250
2251 /* exception handling */
2252 if (expect_false (CORO_THROW))
2253 {
2254 SV *exception = sv_2mortal (CORO_THROW);
2255
2256 CORO_THROW = 0;
2257 sv_setsv (ERRSV, exception);
2258 croak (0);
2259 }
2260
2261 /* return value handling - mostly like entersub */
2262 /* make sure we put something on the stack in scalar context */
2263 if (GIMME_V == G_SCALAR)
2264 {
2265 dSP;
2266 SV **bot = PL_stack_base + checkmark;
2267
2268 if (sp == bot) /* too few, push undef */
2269 bot [1] = &PL_sv_undef;
2270 else if (sp != bot + 1) /* too many, take last one */
2271 bot [1] = *sp;
2272
2273 SP = bot + 1;
2274
2275 PUTBACK;
2276 }
2277
2278 return NORMAL;
2279}
2280
2281static void
2282api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2283{
2284 int i;
2285 SV **arg = PL_stack_base + ax;
2286 int items = PL_stack_sp - arg + 1;
2287
2288 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2289
2290 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2291 && PL_op->op_ppaddr != pp_slf)
2292 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2293
2294 CvFLAGS (cv) |= CVf_SLF;
2295 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2296 slf_cv = cv;
2297
2298 /* we patch the op, and then re-run the whole call */
2299 /* we have to put the same argument on the stack for this to work */
2300 /* and this will be done by pp_restore */
2301 slf_restore.op_next = (OP *)&slf_restore;
2302 slf_restore.op_type = OP_CUSTOM;
2303 slf_restore.op_ppaddr = pp_restore;
2304 slf_restore.op_first = PL_op;
2305
2306 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2307
2308 if (PL_op->op_flags & OPf_STACKED)
2309 {
2310 if (items > slf_arga)
2311 {
2312 slf_arga = items;
2313 free (slf_argv);
2314 slf_argv = malloc (slf_arga * sizeof (SV *));
2315 }
2316
2317 slf_argc = items;
2318
2319 for (i = 0; i < items; ++i)
2320 slf_argv [i] = SvREFCNT_inc (arg [i]);
2321 }
2322 else
2323 slf_argc = 0;
2324
2325 PL_op->op_ppaddr = pp_slf;
2326 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2327
2328 PL_op = (OP *)&slf_restore;
2329}
2330
2331/*****************************************************************************/
2332/* dynamic wind */
2333
2334static void
2335on_enterleave_call (pTHX_ SV *cb)
2336{
2337 dSP;
2338
2339 PUSHSTACK;
2340
2341 PUSHMARK (SP);
2342 PUTBACK;
2343 call_sv (cb, G_VOID | G_DISCARD);
2344 SPAGAIN;
2345
2346 POPSTACK;
2347}
2348
2349static SV *
2350coro_avp_pop_and_free (pTHX_ AV **avp)
2351{
2352 AV *av = *avp;
2353 SV *res = av_pop (av);
2354
2355 if (AvFILLp (av) < 0)
2356 {
2357 *avp = 0;
2358 SvREFCNT_dec (av);
2359 }
2360
2361 return res;
2362}
2363
2364static void
2365coro_pop_on_enter (pTHX_ void *coro)
2366{
2367 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2368 SvREFCNT_dec (cb);
2369}
2370
2371static void
2372coro_pop_on_leave (pTHX_ void *coro)
2373{
2374 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2375 on_enterleave_call (aTHX_ sv_2mortal (cb));
1723} 2376}
1724 2377
1725/*****************************************************************************/ 2378/*****************************************************************************/
1726/* PerlIO::cede */ 2379/* PerlIO::cede */
1727 2380
… …
1796 PerlIOBuf_get_cnt, 2449 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2450 PerlIOBuf_set_ptrcnt,
1798}; 2451};
1799 2452
1800/*****************************************************************************/ 2453/*****************************************************************************/
2454/* Coro::Semaphore & Coro::Signal */
1801 2455
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 * 2456static SV *
1813pp_restore (pTHX) 2457coro_waitarray_new (pTHX_ int count)
1814{ 2458{
1815 dSP; 2459 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2460 AV *av = newAV ();
2461 SV **ary;
1816 2462
1817 PUSHMARK (SP); 2463 /* unfortunately, building manually saves memory */
2464 Newx (ary, 2, SV *);
2465 AvALLOC (av) = ary;
2466#if PERL_VERSION_ATLEAST (5,10,0)
2467 AvARRAY (av) = ary;
2468#else
2469 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2470 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2471 SvPVX ((SV *)av) = (char *)ary;
2472#endif
2473 AvMAX (av) = 1;
2474 AvFILLp (av) = 0;
2475 ary [0] = newSViv (count);
1818 2476
1819 EXTEND (SP, 3); 2477 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} 2478}
1827 2479
1828static void 2480/* 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 2481
1834static void 2482static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2483coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2484{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2485 SV *count_sv = AvARRAY (av)[0];
2486 IV count = SvIVX (count_sv);
1838 2487
1839 frame->prepare = slf_prepare_set_stacklevel; 2488 count += adjust;
1840 frame->check = slf_check_nop; 2489 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2490
1844static void 2491 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2492 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 { 2493 {
1903 /* first iteration */ 2494 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 2495
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2496 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2497 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2498 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2499 cb = av_shift (av);
1913 2500
1914 /* pop args */ 2501 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2502 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2503 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2504 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2505 }
1924 2506 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 { 2507 {
1955 if (sp == bot) 2508 dSP;
1956 XPUSHs (&PL_sv_undef); 2509 PUSHMARK (SP);
1957 2510 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2511 PUTBACK;
2512 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2513 }
1960 2514
1961 PUTBACK; 2515 SvREFCNT_dec (cb);
1962 } 2516 }
1963
1964 return NORMAL;
1965} 2517}
1966 2518
1967static void 2519static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2520coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1969{ 2521{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2522 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2523 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} 2524}
1999
2000/*****************************************************************************/
2001 2525
2002static int 2526static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2527slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2528{
2005 AV *av = (AV *)frame->data; 2529 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2530 SV *count_sv = AvARRAY (av)[0];
2007 2531
2532 /* if we are about to throw, don't actually acquire the lock, just throw */
2533 if (CORO_THROW)
2534 return 0;
2008 if (SvIVX (count_sv) > 0) 2535 else if (SvIVX (count_sv) > 0)
2009 { 2536 {
2537 SvSTATE_current->on_destroy = 0;
2538
2539 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2540 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2541 else
2542 coro_semaphore_adjust (aTHX_ av, 0);
2543
2011 return 0; 2544 return 0;
2012 } 2545 }
2013 else 2546 else
2014 { 2547 {
2015 int i; 2548 int i;
… …
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2557 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1; 2558 return 1;
2026 } 2559 }
2027} 2560}
2028 2561
2029static void 2562static int
2563slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2564{
2565 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2566}
2567
2568static int
2569slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2570{
2571 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2572}
2573
2574static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2575slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2576{
2032 AV *av = (AV *)SvRV (arg [0]); 2577 AV *av = (AV *)SvRV (arg [0]);
2033 2578
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2579 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2580 {
… …
2040 { 2585 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2586 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2587
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2589 frame->prepare = prepare_schedule;
2045 }
2046 2590
2591 /* to avoid race conditions when a woken-up coro gets terminated */
2592 /* we arrange for a temporary on_destroy that calls adjust (0) */
2593 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2594 }
2595}
2596
2597static void
2598slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2599{
2600 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 2601 frame->check = slf_check_semaphore_down;
2602}
2048 2603
2604static void
2605slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2606{
2607 if (items >= 2)
2608 {
2609 /* callback form */
2610 AV *av = (AV *)SvRV (arg [0]);
2611 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2612
2613 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2614
2615 if (SvIVX (AvARRAY (av)[0]) > 0)
2616 coro_semaphore_adjust (aTHX_ av, 0);
2617
2618 frame->prepare = prepare_nop;
2619 frame->check = slf_check_nop;
2620 }
2621 else
2622 {
2623 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2624 frame->check = slf_check_semaphore_wait;
2625 }
2626}
2627
2628/* signal */
2629
2630static void
2631coro_signal_wake (pTHX_ AV *av, int count)
2632{
2633 SvIVX (AvARRAY (av)[0]) = 0;
2634
2635 /* now signal count waiters */
2636 while (count > 0 && AvFILLp (av) > 0)
2637 {
2638 SV *cb;
2639
2640 /* swap first two elements so we can shift a waiter */
2641 cb = AvARRAY (av)[0];
2642 AvARRAY (av)[0] = AvARRAY (av)[1];
2643 AvARRAY (av)[1] = cb;
2644
2645 cb = av_shift (av);
2646
2647 api_ready (aTHX_ cb);
2648 sv_setiv (cb, 0); /* signal waiter */
2649 SvREFCNT_dec (cb);
2650
2651 --count;
2652 }
2653}
2654
2655static int
2656slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2657{
2658 /* if we are about to throw, also stop waiting */
2659 return SvROK ((SV *)frame->data) && !CORO_THROW;
2660}
2661
2662static void
2663slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664{
2665 AV *av = (AV *)SvRV (arg [0]);
2666
2667 if (SvIVX (AvARRAY (av)[0]))
2668 {
2669 SvIVX (AvARRAY (av)[0]) = 0;
2670 frame->prepare = prepare_nop;
2671 frame->check = slf_check_nop;
2672 }
2673 else
2674 {
2675 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2676
2677 av_push (av, waiter);
2678
2679 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2680 frame->prepare = prepare_schedule;
2681 frame->check = slf_check_signal_wait;
2682 }
2049} 2683}
2050 2684
2051/*****************************************************************************/ 2685/*****************************************************************************/
2686/* Coro::AIO */
2052 2687
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2688#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 2689
2055/* create a closure from XS, returns a code reference */ 2690/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 2691struct io_state
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{ 2692{
2061 CV *cv = (CV *)NEWSV (0, 0); 2693 int errorno;
2694 I32 laststype; /* U16 in 5.10.0 */
2695 int laststatval;
2696 Stat_t statcache;
2697};
2062 2698
2699static void
2700coro_aio_callback (pTHX_ CV *cv)
2701{
2702 dXSARGS;
2703 AV *state = (AV *)GENSUB_ARG;
2704 SV *coro = av_pop (state);
2705 SV *data_sv = newSV (sizeof (struct io_state));
2706
2707 av_extend (state, items - 1);
2708
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 2709 sv_upgrade (data_sv, SVt_PV);
2710 SvCUR_set (data_sv, sizeof (struct io_state));
2711 SvPOK_only (data_sv);
2064 2712
2065 CvANON_on (cv); 2713 {
2066 CvISXSUB_on (cv); 2714 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069 2715
2070 return newRV_noinc ((SV *)cv); 2716 data->errorno = errno;
2717 data->laststype = PL_laststype;
2718 data->laststatval = PL_laststatval;
2719 data->statcache = PL_statcache;
2720 }
2721
2722 /* now build the result vector out of all the parameters and the data_sv */
2723 {
2724 int i;
2725
2726 for (i = 0; i < items; ++i)
2727 av_push (state, SvREFCNT_inc_NN (ST (i)));
2728 }
2729
2730 av_push (state, data_sv);
2731
2732 api_ready (aTHX_ coro);
2733 SvREFCNT_dec (coro);
2734 SvREFCNT_dec ((AV *)state);
2735}
2736
2737static int
2738slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2739{
2740 AV *state = (AV *)frame->data;
2741
2742 /* if we are about to throw, return early */
2743 /* this does not cancel the aio request, but at least */
2744 /* it quickly returns */
2745 if (CORO_THROW)
2746 return 0;
2747
2748 /* one element that is an RV? repeat! */
2749 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2750 return 1;
2751
2752 /* restore status */
2753 {
2754 SV *data_sv = av_pop (state);
2755 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2756
2757 errno = data->errorno;
2758 PL_laststype = data->laststype;
2759 PL_laststatval = data->laststatval;
2760 PL_statcache = data->statcache;
2761
2762 SvREFCNT_dec (data_sv);
2763 }
2764
2765 /* push result values */
2766 {
2767 dSP;
2768 int i;
2769
2770 EXTEND (SP, AvFILLp (state) + 1);
2771 for (i = 0; i <= AvFILLp (state); ++i)
2772 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2773
2774 PUTBACK;
2775 }
2776
2777 return 0;
2778}
2779
2780static void
2781slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2782{
2783 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2784 SV *coro_hv = SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv (coro_hv);
2786
2787 /* put our coroutine id on the state arg */
2788 av_push (state, SvREFCNT_inc_NN (coro_hv));
2789
2790 /* first see whether we have a non-zero priority and set it as AIO prio */
2791 if (coro->prio)
2792 {
2793 dSP;
2794
2795 static SV *prio_cv;
2796 static SV *prio_sv;
2797
2798 if (expect_false (!prio_cv))
2799 {
2800 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2801 prio_sv = newSViv (0);
2802 }
2803
2804 PUSHMARK (SP);
2805 sv_setiv (prio_sv, coro->prio);
2806 XPUSHs (prio_sv);
2807
2808 PUTBACK;
2809 call_sv (prio_cv, G_VOID | G_DISCARD);
2810 }
2811
2812 /* now call the original request */
2813 {
2814 dSP;
2815 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2816 int i;
2817
2818 PUSHMARK (SP);
2819
2820 /* first push all args to the stack */
2821 EXTEND (SP, items + 1);
2822
2823 for (i = 0; i < items; ++i)
2824 PUSHs (arg [i]);
2825
2826 /* now push the callback closure */
2827 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2828
2829 /* now call the AIO function - we assume our request is uncancelable */
2830 PUTBACK;
2831 call_sv ((SV *)req, G_VOID | G_DISCARD);
2832 }
2833
2834 /* now that the requets is going, we loop toll we have a result */
2835 frame->data = (void *)state;
2836 frame->prepare = prepare_schedule;
2837 frame->check = slf_check_aio_req;
2838}
2839
2840static void
2841coro_aio_req_xs (pTHX_ CV *cv)
2842{
2843 dXSARGS;
2844
2845 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2846
2847 XSRETURN_EMPTY;
2071} 2848}
2072 2849
2073/*****************************************************************************/ 2850/*****************************************************************************/
2074 2851
2852#if CORO_CLONE
2853# include "clone.c"
2854#endif
2855
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2856MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 2857
2077PROTOTYPES: DISABLE 2858PROTOTYPES: DISABLE
2078 2859
2079BOOT: 2860BOOT:
2080{ 2861{
2081#ifdef USE_ITHREADS 2862#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 2863# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 2864 coro_thx = PERL_GET_CONTEXT;
2085# endif 2865# endif
2086#endif 2866#endif
2087 BOOT_PAGESIZE; 2867 BOOT_PAGESIZE;
2868
2869 cctx_current = cctx_new_empty ();
2088 2870
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2871 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2872 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 2873
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2874 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2107 main_mainstack = PL_mainstack; 2889 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 2890 main_top_env = PL_top_env;
2109 2891
2110 while (main_top_env->je_prev) 2892 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 2893 main_top_env = main_top_env->je_prev;
2894
2895 {
2896 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2897
2898 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2899 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2900
2901 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2902 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2903 }
2112 2904
2113 coroapi.ver = CORO_API_VERSION; 2905 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 2906 coroapi.rev = CORO_API_REVISION;
2115 2907
2116 coroapi.transfer = api_transfer; 2908 coroapi.transfer = api_transfer;
… …
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2926 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2135} 2927}
2136 2928
2137SV * 2929SV *
2138new (char *klass, ...) 2930new (char *klass, ...)
2931 ALIAS:
2932 Coro::new = 1
2139 CODE: 2933 CODE:
2140{ 2934{
2141 struct coro *coro; 2935 struct coro *coro;
2142 MAGIC *mg; 2936 MAGIC *mg;
2143 HV *hv; 2937 HV *hv;
2938 CV *cb;
2144 int i; 2939 int i;
2940
2941 if (items > 1)
2942 {
2943 cb = coro_sv_2cv (aTHX_ ST (1));
2944
2945 if (!ix)
2946 {
2947 if (CvISXSUB (cb))
2948 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2949
2950 if (!CvROOT (cb))
2951 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2952 }
2953 }
2145 2954
2146 Newz (0, coro, 1, struct coro); 2955 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV (); 2956 coro->args = newAV ();
2148 coro->flags = CF_NEW; 2957 coro->flags = CF_NEW;
2149 2958
… …
2154 coro->hv = hv = newHV (); 2963 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2964 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP; 2965 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2966 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158 2967
2968 if (items > 1)
2969 {
2159 av_extend (coro->args, items - 1); 2970 av_extend (coro->args, items - 1 + ix - 1);
2971
2972 if (ix)
2973 {
2974 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2975 cb = cv_coro_run;
2976 }
2977
2978 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2979
2160 for (i = 1; i < items; i++) 2980 for (i = 2; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i))); 2981 av_push (coro->args, newSVsv (ST (i)));
2982 }
2162} 2983}
2163 OUTPUT: 2984 OUTPUT:
2164 RETVAL 2985 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 2986
2171void 2987void
2172transfer (...) 2988transfer (...)
2173 PROTOTYPE: $$ 2989 PROTOTYPE: $$
2174 CODE: 2990 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2991 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 2992
2177bool 2993bool
2178_destroy (SV *coro_sv) 2994_destroy (SV *coro_sv)
2179 CODE: 2995 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2996 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2184void 3000void
2185_exit (int code) 3001_exit (int code)
2186 PROTOTYPE: $ 3002 PROTOTYPE: $
2187 CODE: 3003 CODE:
2188 _exit (code); 3004 _exit (code);
3005
3006SV *
3007clone (Coro::State coro)
3008 CODE:
3009{
3010#if CORO_CLONE
3011 struct coro *ncoro = coro_clone (aTHX_ coro);
3012 MAGIC *mg;
3013 /* TODO: too much duplication */
3014 ncoro->hv = newHV ();
3015 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3016 mg->mg_flags |= MGf_DUP;
3017 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3018#else
3019 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3020#endif
3021}
3022 OUTPUT:
3023 RETVAL
2189 3024
2190int 3025int
2191cctx_stacksize (int new_stacksize = 0) 3026cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3027 PROTOTYPE: ;$
2193 CODE: 3028 CODE:
… …
2243 eval = 1 3078 eval = 1
2244 CODE: 3079 CODE:
2245{ 3080{
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3081 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2247 { 3082 {
2248 struct coro temp; 3083 struct coro *current = SvSTATE_current;
2249 3084
2250 if (!(coro->flags & CF_RUNNING)) 3085 if (current != coro)
2251 { 3086 {
2252 PUTBACK; 3087 PUTBACK;
2253 save_perl (aTHX_ &temp); 3088 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3089 load_perl (aTHX_ coro);
3090 SPAGAIN;
2255 } 3091 }
2256 3092
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3093 PUSHSTACK;
3094
2263 PUSHMARK (SP); 3095 PUSHMARK (SP);
3096 PUTBACK;
2264 3097
2265 if (ix) 3098 if (ix)
2266 eval_sv (coderef, 0); 3099 eval_sv (coderef, 0);
2267 else 3100 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3101 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3102
2270 POPSTACK; 3103 POPSTACK;
2271 SPAGAIN; 3104 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3105
2277 if (!(coro->flags & CF_RUNNING)) 3106 if (current != coro)
2278 { 3107 {
3108 PUTBACK;
2279 save_perl (aTHX_ coro); 3109 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3110 load_perl (aTHX_ current);
2281 SPAGAIN; 3111 SPAGAIN;
2282 } 3112 }
2283 } 3113 }
2284} 3114}
2285 3115
… …
2289 ALIAS: 3119 ALIAS:
2290 is_ready = CF_READY 3120 is_ready = CF_READY
2291 is_running = CF_RUNNING 3121 is_running = CF_RUNNING
2292 is_new = CF_NEW 3122 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3123 is_destroyed = CF_DESTROYED
3124 is_suspended = CF_SUSPENDED
2294 CODE: 3125 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3126 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3127 OUTPUT:
2297 RETVAL 3128 RETVAL
2298 3129
2299void 3130void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3131throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3132 PROTOTYPE: $;$
2302 CODE: 3133 CODE:
3134{
3135 struct coro *current = SvSTATE_current;
3136 SV **throwp = self == current ? &CORO_THROW : &self->except;
2303 SvREFCNT_dec (self->throw); 3137 SvREFCNT_dec (*throwp);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3138 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3139}
2305 3140
2306void 3141void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3142api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3143 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3144 C_ARGS: aTHX_ coro, flags
2310 3145
2311SV * 3146SV *
2312has_cctx (Coro::State coro) 3147has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3148 PROTOTYPE: $
2314 CODE: 3149 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3150 /* maybe manage the running flag differently */
3151 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3152 OUTPUT:
2317 RETVAL 3153 RETVAL
2318 3154
2319int 3155int
2320is_traced (Coro::State coro) 3156is_traced (Coro::State coro)
… …
2340 3176
2341void 3177void
2342force_cctx () 3178force_cctx ()
2343 PROTOTYPE: 3179 PROTOTYPE:
2344 CODE: 3180 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3181 cctx_current->idle_sp = 0;
2347 3182
2348void 3183void
2349swap_defsv (Coro::State self) 3184swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3185 PROTOTYPE: $
2351 ALIAS: 3186 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3194 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3195
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3196 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3197 }
2363 3198
3199void
3200cancel (Coro::State self)
3201 CODE:
3202 coro_state_destroy (aTHX_ self);
3203 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3204
3205
2364MODULE = Coro::State PACKAGE = Coro 3206MODULE = Coro::State PACKAGE = Coro
2365 3207
2366BOOT: 3208BOOT:
2367{ 3209{
2368 int i; 3210 int i;
2369 3211
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3212 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3213 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3214 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3215 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3216 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 3217 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3218 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3219 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3220 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3221
3222 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3223 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3224 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3225 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2376 3226
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3227 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3228
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2388 3238
2389 { 3239 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3241
2392 coroapi.schedule = api_schedule; 3242 coroapi.schedule = api_schedule;
3243 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3244 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3245 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3246 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3247 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3248 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3249 coroapi.current = coro_current;
2399 3250
2400 GCoroAPI = &coroapi; 3251 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3252 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3253 SvREADONLY_on (sv);
2403 } 3254 }
2404} 3255}
2405 3256
2406void 3257void
3258terminate (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3261
3262void
2407schedule (...) 3263schedule (...)
2408 CODE: 3264 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3265 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3266
3267void
3268schedule_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3271
3272void
3273cede_to (...)
3274 CODE:
3275 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 3276
2411void 3277void
2412cede (...) 3278cede (...)
2413 CODE: 3279 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3280 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3281
2416void 3282void
2417cede_notself (...) 3283cede_notself (...)
2418 CODE: 3284 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3285 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 3286
2421void 3287void
2422_set_current (SV *current) 3288_set_current (SV *current)
2423 PROTOTYPE: $ 3289 PROTOTYPE: $
2424 CODE: 3290 CODE:
… …
2427 3293
2428void 3294void
2429_set_readyhook (SV *hook) 3295_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3296 PROTOTYPE: $
2431 CODE: 3297 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3298 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3299 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
2436 3300
2437int 3301int
2438prio (Coro::State coro, int newprio = 0) 3302prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3303 PROTOTYPE: $;$
2440 ALIAS: 3304 ALIAS:
… …
2471 CODE: 3335 CODE:
2472 RETVAL = coro_nready; 3336 RETVAL = coro_nready;
2473 OUTPUT: 3337 OUTPUT:
2474 RETVAL 3338 RETVAL
2475 3339
2476# for async_pool speedup
2477void 3340void
2478_pool_1 (SV *cb) 3341_pool_handler (...)
2479 CODE: 3342 CODE:
2480{ 3343 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
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 3344
2515void 3345void
2516_pool_2 (SV *cb) 3346async_pool (SV *cv, ...)
2517 CODE:
2518{
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
2550void
2551_get_state (SV *self)
2552 PROTOTYPE: $ 3347 PROTOTYPE: &@
2553 PPCODE: 3348 PPCODE:
2554{ 3349{
2555 AV *defav = GvAV (PL_defgv); 3350 HV *hv = (HV *)av_pop (av_async_pool);
2556 AV *av = newAV (); 3351 AV *av = newAV ();
3352 SV *cb = ST (0);
2557 int i; 3353 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 3354
2563 data->errorno = errno; 3355 av_extend (av, items - 2);
2564 data->laststype = PL_laststype; 3356 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])); 3357 av_push (av, SvREFCNT_inc_NN (ST (i)));
2572 3358
2573 av_push (av, data_sv); 3359 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 { 3360 {
2620 PUSHMARK (SP); 3361 PUSHMARK (SP);
3362 EXTEND (SP, 2);
3363 PUSHs (sv_Coro);
3364 PUSHs ((SV *)cv_pool_handler);
2621 PUTBACK; 3365 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3366 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2623 SPAGAIN; 3367 SPAGAIN;
3368
3369 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2624 } 3370 }
2625 3371
2626 --incede; 3372 {
3373 struct coro *coro = SvSTATE_hv (hv);
3374
3375 assert (!coro->invoke_cb);
3376 assert (!coro->invoke_av);
3377 coro->invoke_cb = SvREFCNT_inc (cb);
3378 coro->invoke_av = av;
3379 }
3380
3381 api_ready (aTHX_ (SV *)hv);
3382
3383 if (GIMME_V != G_VOID)
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3385 else
3386 SvREFCNT_dec (hv);
3387}
3388
3389SV *
3390rouse_cb ()
3391 PROTOTYPE:
3392 CODE:
3393 RETVAL = coro_new_rouse_cb (aTHX);
3394 OUTPUT:
3395 RETVAL
3396
3397void
3398rouse_wait (...)
3399 PROTOTYPE: ;$
3400 PPCODE:
3401 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3402
3403void
3404on_enter (SV *block)
3405 ALIAS:
3406 on_leave = 1
3407 PROTOTYPE: &
3408 CODE:
3409{
3410 struct coro *coro = SvSTATE_current;
3411 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3412
3413 block = (SV *)coro_sv_2cv (aTHX_ block);
3414
3415 if (!*avp)
3416 *avp = newAV ();
3417
3418 av_push (*avp, SvREFCNT_inc (block));
3419
3420 if (!ix)
3421 on_enterleave_call (aTHX_ block);
3422
3423 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3424 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3425 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
2627} 3426}
2628 3427
2629 3428
2630MODULE = Coro::State PACKAGE = PerlIO::cede 3429MODULE = Coro::State PACKAGE = PerlIO::cede
2631 3430
2632BOOT: 3431BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3432 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 3433
3434
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 3435MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 3436
2637SV * 3437SV *
2638new (SV *klass, SV *count_ = 0) 3438new (SV *klass, SV *count = 0)
2639 CODE: 3439 CODE:
2640{ 3440 RETVAL = sv_bless (
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3441 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2642 AV *av = newAV (); 3442 GvSTASH (CvGV (cv))
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3443 );
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3444 OUTPUT:
2645} 3445 RETVAL
3446
3447# helper for Coro::Channel and others
3448SV *
3449_alloc (int count)
3450 CODE:
3451 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 3452 OUTPUT:
2647 RETVAL 3453 RETVAL
2648 3454
2649SV * 3455SV *
2650count (SV *self) 3456count (SV *self)
… …
2656void 3462void
2657up (SV *self, int adjust = 1) 3463up (SV *self, int adjust = 1)
2658 ALIAS: 3464 ALIAS:
2659 adjust = 1 3465 adjust = 1
2660 CODE: 3466 CODE:
2661{ 3467 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 3468
2688void 3469void
2689down (SV *self) 3470down (...)
2690 CODE: 3471 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3472 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3473
3474void
3475wait (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 3478
2693void 3479void
2694try (SV *self) 3480try (SV *self)
2695 PPCODE: 3481 PPCODE:
2696{ 3482{
… …
2708 XSRETURN_NO; 3494 XSRETURN_NO;
2709} 3495}
2710 3496
2711void 3497void
2712waiters (SV *self) 3498waiters (SV *self)
2713 CODE: 3499 PPCODE:
2714{ 3500{
2715 AV *av = (AV *)SvRV (self); 3501 AV *av = (AV *)SvRV (self);
3502 int wcount = AvFILLp (av) + 1 - 1;
2716 3503
2717 if (GIMME_V == G_SCALAR) 3504 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3505 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 3506 else
2720 { 3507 {
2721 int i; 3508 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 3509 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 3510 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 3511 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 3512 }
2726} 3513}
2727 3514
3515MODULE = Coro::State PACKAGE = Coro::Signal
3516
3517SV *
3518new (SV *klass)
3519 CODE:
3520 RETVAL = sv_bless (
3521 coro_waitarray_new (aTHX_ 0),
3522 GvSTASH (CvGV (cv))
3523 );
3524 OUTPUT:
3525 RETVAL
3526
3527void
3528wait (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3531
3532void
3533broadcast (SV *self)
3534 CODE:
3535{
3536 AV *av = (AV *)SvRV (self);
3537 coro_signal_wake (aTHX_ av, AvFILLp (av));
3538}
3539
3540void
3541send (SV *self)
3542 CODE:
3543{
3544 AV *av = (AV *)SvRV (self);
3545
3546 if (AvFILLp (av))
3547 coro_signal_wake (aTHX_ av, 1);
3548 else
3549 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3550}
3551
3552IV
3553awaited (SV *self)
3554 CODE:
3555 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3556 OUTPUT:
3557 RETVAL
3558
3559
3560MODULE = Coro::State PACKAGE = Coro::AnyEvent
3561
3562BOOT:
3563 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3564
3565void
3566_schedule (...)
3567 CODE:
3568{
3569 static int incede;
3570
3571 api_cede_notself (aTHX);
3572
3573 ++incede;
3574 while (coro_nready >= incede && api_cede (aTHX))
3575 ;
3576
3577 sv_setsv (sv_activity, &PL_sv_undef);
3578 if (coro_nready >= incede)
3579 {
3580 PUSHMARK (SP);
3581 PUTBACK;
3582 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3583 }
3584
3585 --incede;
3586}
3587
3588
3589MODULE = Coro::State PACKAGE = Coro::AIO
3590
3591void
3592_register (char *target, char *proto, SV *req)
3593 CODE:
3594{
3595 CV *req_cv = coro_sv_2cv (aTHX_ req);
3596 /* newXSproto doesn't return the CV on 5.8 */
3597 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3598 sv_setpv ((SV *)slf_cv, proto);
3599 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3600}
3601

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