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Comparing Coro/Coro/State.xs (file contents):
Revision 1.286 by root, Mon Nov 17 04:19:49 2008 UTC vs.
Revision 1.335 by root, Thu Dec 4 04:31:41 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
172static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 184static SV *rv_diehook;
175static SV *rv_warnhook; 185static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
177 187
178/* async_pool helper stuff */ 188/* async_pool helper stuff */
179static SV *sv_pool_rss; 189static SV *sv_pool_rss;
180static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
181static 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;
182 196
183/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
184static SV *sv_activity; 198static SV *sv_activity;
185 199
186static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
219 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
229{ 247{
230 SV *defsv; 248 SV *defsv;
231 AV *defav; 249 AV *defav;
232 SV *errsv; 250 SV *errsv;
233 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
234#define VAR(name,type) type name; 253#define VAR(name,type) type name;
235# include "state.h" 254# include "state.h"
236#undef VAR 255#undef VAR
237} perl_slots; 256} perl_slots;
238 257
… …
246 /* state data */ 265 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 267 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
250 269
270 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 275 void (*on_destroy)(pTHX_ struct coro *coro);
256 276
257 /* statistics */ 277 /* statistics */
258 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
259 279
260 /* coro process data */ 280 /* coro process data */
261 int prio; 281 int prio;
262 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
263 284
264 /* async_pool */ 285 /* async_pool */
265 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
266 289
267 /* linked list */ 290 /* linked list */
268 struct coro *next, *prev; 291 struct coro *next, *prev;
269}; 292};
270 293
… …
273 296
274/* the following variables are effectively part of the perl context */ 297/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 298/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 299/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 301
280/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
281 303
282#define PRIO_MAX 3 304#define PRIO_MAX 3
283#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
288 310
289/* for Coro.pm */ 311/* for Coro.pm */
290static SV *coro_current; 312static SV *coro_current;
291static SV *coro_readyhook; 313static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
293static struct coro *coro_first; 316static struct coro *coro_first;
294#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
295 318
296/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
297 320
… …
323 get_hv (name, create); 346 get_hv (name, create);
324#endif 347#endif
325 return get_hv (name, create); 348 return get_hv (name, create);
326} 349}
327 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
328static AV * 412static AV *
329coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
330{ 414{
331 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
333 417
334 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 424#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 426 --AvFILLp (padlist);
343 427
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
346 430
347 return newpadlist; 431 return newpadlist;
348} 432}
349 433
350static void 434static void
351free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
352{ 436{
353 /* may be during global destruction */ 437 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
355 { 439 {
356 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
357 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
358 { 443 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
360 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 446 I32 j = AvFILLp (av);
362 SV *sv; 447
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 453 }
369 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
371 } 459 }
372} 460}
373 461
374static int 462static int
… …
383 471
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 473
386 return 0; 474 return 0;
387} 475}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 476
392static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 478 0, 0, 0, 0,
394 coro_cv_free 479 coro_cv_free
395}; 480};
396
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 481
446/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
447static void 483static void
448get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
449{ 485{
… …
455 else 491 else
456 { 492 {
457#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
464#else 500#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 502#endif
467 } 503 }
468} 504}
469 505
470static void 506static void
… …
477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
478 514
479 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
480 516
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
483 519
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 521}
486 522
487/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
492 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
493 c->slot = 0; 529 c->slot = 0;
494 530
495 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
496 532
497 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
501 538
502 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
503 # include "state.h" 540 # include "state.h"
504 #undef VAR 541 #undef VAR
505 542
… …
518 555
519 PUTBACK; 556 PUTBACK;
520 } 557 }
521 558
522 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 560 CORO_THROW = c->except;
524} 561}
525 562
526static void 563static void
527save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
528{ 565{
529 c->throw = coro_throw; 566 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
531 568
532 { 569 {
533 dSP; 570 dSP;
534 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
591 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
592 629
593 { 630 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 632
596 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
598 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
600 638
601 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
602 # include "state.h" 640 # include "state.h"
603 #undef VAR 641 #undef VAR
604 } 642 }
… …
609 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
612 */ 650 */
613#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
615#else 653#else
616static void 654static void
617coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
618{ 656{
619 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 721 Safefree (PL_retstack);
684#endif 722#endif
685} 723}
686 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
687static size_t 734static size_t
688coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
689{ 736{
690 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
691 738
692 if (coro->mainstack) 739 if (coro->mainstack)
693 { 740 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
698 { 742 {
699 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
700 744 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 745 #undef SYM
704 } 746 }
705 else 747 else
706 slot = coro->slot;
707
708 if (slot)
709 { 748 {
710 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 752 }
722 } 753 }
723 754
724 return rss; 755 return rss;
725} 756}
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 858slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 859{
829 return 0; 860 return 0;
830} 861}
831 862
863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 871static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
834{ 873{
835 /* 874 /*
836 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
… …
839 878
840 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 886 PL_curpm = 0;
845 PL_curpad = 0; 887 PL_curpad = 0;
846 PL_localizing = 0; 888 PL_localizing = 0;
847 PL_dirty = 0; 889 PL_dirty = 0;
848 PL_restartop = 0; 890 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 892 PL_parser = 0;
851#endif 893#endif
894 PL_hints = 0;
852 895
853 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
856 899
857 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
861 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 907
864 { 908 {
865 dSP; 909 dSP;
866 UNOP myop; 910 UNOP myop;
867 911
868 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
871 916
872 PUSHMARK (SP); 917 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 919 PUTBACK;
875 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 922 }
879 923
880 /* this newly created coroutine might be run on an existing cctx which most 924 /* this newly created coroutine might be run on an existing cctx which most
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 926 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885 929
886 coro_throw = coro->throw; 930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
888 935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
889static void 942static void
890coro_destruct (pTHX_ struct coro *coro) 943coro_destruct_perl (pTHX_ struct coro *coro)
891{ 944{
892 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
893 { 946 {
894 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
910 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
911 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
912 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
913 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
915 969
916 SvREFCNT_dec (PL_diehook); 970 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook); 971 SvREFCNT_dec (PL_warnhook);
918 972
919 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
921 977
922 coro_destruct_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
923} 979}
924 980
925INLINE void 981INLINE void
… …
935static int 991static int
936runops_trace (pTHX) 992runops_trace (pTHX)
937{ 993{
938 COP *oldcop = 0; 994 COP *oldcop = 0;
939 int oldcxix = -2; 995 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 996
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 998 {
945 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
946 1000
947 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1002 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1003 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1004 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1006 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
954 SV **cb; 1008 SV **cb;
… …
991 1045
992 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
993 { 1047 {
994 SV **cb; 1048 SV **cb;
995 1049
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1051 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1053
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1055 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1056 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
1006 1059
1007 if (isGV (gv)) 1060 if (isGV (gv))
… …
1012 SAVETMPS; 1065 SAVETMPS;
1013 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1067 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1069 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1071 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1074 SPAGAIN;
1022 FREETMPS; 1075 FREETMPS;
… …
1025 } 1078 }
1026 1079
1027 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
1028 } 1081 }
1029 1082
1030 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1084 {
1032 dSP; 1085 dSP;
1033 1086
1034 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1088 ENTER;
… …
1054 1107
1055 TAINT_NOT; 1108 TAINT_NOT;
1056 return 0; 1109 return 0;
1057} 1110}
1058 1111
1112static struct CoroSLF cctx_ssl_frame;
1113
1059static void 1114static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1116{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1117 ta->prev = 0;
1064} 1118}
1065 1119
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1120static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1122{
1069/* also initialises PL_top_env */ 1123 *frame = cctx_ssl_frame;
1124
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126}
1127
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1070static void NOINLINE 1129static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
1072{ 1131{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
1077 1133
1078 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
1080 1136
1081 Zero (&myop, 1, UNOP); 1137 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1139 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1140 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1141
1085 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1144
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1147}
1094 1148
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1149/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1150INLINE void
1097transfer_tail (pTHX) 1151transfer_tail (pTHX)
… …
1116 /* normally we would need to skip the entersub here */ 1170 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1171 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1172 /* PL_nop = PL_nop->op_next */
1119 1173
1120 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
1122 1176
1123 /* cctx_run is the alternative tail of transfer() */ 1177 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1178 transfer_tail (aTHX);
1125 1179
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1180 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1182 perl_run (PL_curinterp);
1183 /*
1184 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these
1186 */
1129 1187
1130 /* 1188 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1189 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1190 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1191 * reason for perl_run to return. We try to exit by jumping to the
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * coroutine as Coro has no such concept 1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
1136 */ 1196 */
1137 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1199 }
1140} 1200}
… …
1217cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
1218{ 1278{
1219 if (!cctx) 1279 if (!cctx)
1220 return; 1280 return;
1221 1281
1282 assert (cctx != cctx_current);//D temporary
1283
1222 --cctx_count; 1284 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1285 coro_destroy (&cctx->cctx);
1224 1286
1225 /* coro_transfer creates new, empty cctx's */ 1287 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1288 if (cctx->sptr)
… …
1289 /* TODO: throwing up here is considered harmful */ 1351 /* TODO: throwing up here is considered harmful */
1290 1352
1291 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
1292 { 1354 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1295 1357
1296 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298 1360
1299 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
… …
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1374{
1313 dSTACKLEVEL; 1375 dSTACKLEVEL;
1314 1376
1315 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1378 if (expect_false (!prev))
1317 { 1379 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1380 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1382 }
1321 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1322 { 1384 {
1323 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1324 1386
1325 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1326 { 1388 {
1327 /* create a new empty/source context */ 1389 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1331 } 1392 }
1332 1393
1333 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
… …
1344 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1345 } 1406 }
1346 else 1407 else
1347 load_perl (aTHX_ next); 1408 load_perl (aTHX_ next);
1348 1409
1349 prev__cctx = prev->cctx; 1410 assert (!prev->cctx);//D temporary
1350 1411
1351 /* possibly untie and reuse the cctx */ 1412 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1413 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1414 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1415 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1416 && !force_cctx
1356 )) 1417 ))
1357 { 1418 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1419 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1420 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1421
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1422 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1423 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1425 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1426 next->cctx = cctx_get (aTHX);
1368 1427
1369 cctx_put (prev__cctx); 1428 cctx_put (cctx_current);
1370 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1371 1432
1372 ++next->usecount; 1433 ++next->usecount;
1373 1434
1374 if (expect_true (!next->cctx)) 1435 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1437
1377 if (expect_false (prev__cctx != next->cctx)) 1438 next->cctx = 0;
1439
1440 if (expect_false (cctx_prev != cctx_current))
1378 { 1441 {
1379 prev__cctx->top_env = PL_top_env; 1442 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1443 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1445 }
1383 1446
1384 transfer_tail (aTHX); 1447 transfer_tail (aTHX);
1385 } 1448 }
1386} 1449}
… …
1408 --coro_nready; 1471 --coro_nready;
1409 } 1472 }
1410 else 1473 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1474 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1475
1413 if (coro->mainstack && coro->mainstack != main_mainstack) 1476 if (coro->mainstack
1477 && coro->mainstack != main_mainstack
1478 && !PL_dirty)
1414 { 1479 {
1415 struct coro temp; 1480 struct coro temp;
1416 1481
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1482 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418 1483
1419 save_perl (aTHX_ &temp); 1484 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro); 1485 load_perl (aTHX_ coro);
1421 1486
1422 coro_destruct (aTHX_ coro); 1487 coro_destruct_perl (aTHX_ coro);
1423 1488
1424 load_perl (aTHX_ &temp); 1489 load_perl (aTHX_ &temp);
1425 1490
1426 coro->slot = 0; 1491 coro->slot = 0;
1427 } 1492 }
1428 1493
1429 cctx_destroy (coro->cctx); 1494 cctx_destroy (coro->cctx);
1495 SvREFCNT_dec (coro->startcv);
1430 SvREFCNT_dec (coro->args); 1496 SvREFCNT_dec (coro->args);
1497 SvREFCNT_dec (CORO_THROW);
1431 1498
1432 if (coro->next) coro->next->prev = coro->prev; 1499 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1500 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1501 if (coro == coro_first) coro_first = coro->next;
1435 1502
… …
1489 1556
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1557 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1558 TRANSFER (ta, 1);
1492} 1559}
1493 1560
1561/*****************************************************************************/
1562/* gensub: simple closure generation utility */
1563
1564#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1565
1566/* create a closure from XS, returns a code reference */
1567/* the arg can be accessed via GENSUB_ARG from the callback */
1568/* the callback must use dXSARGS/XSRETURN */
1569static SV *
1570gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1571{
1572 CV *cv = (CV *)newSV (0);
1573
1574 sv_upgrade ((SV *)cv, SVt_PVCV);
1575
1576 CvANON_on (cv);
1577 CvISXSUB_on (cv);
1578 CvXSUB (cv) = xsub;
1579 GENSUB_ARG = arg;
1580
1581 return newRV_noinc ((SV *)cv);
1582}
1583
1494/** Coro ********************************************************************/ 1584/** Coro ********************************************************************/
1495 1585
1496INLINE void 1586INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1587coro_enq (pTHX_ struct coro *coro)
1498{ 1588{
… …
1516{ 1606{
1517 struct coro *coro; 1607 struct coro *coro;
1518 SV *sv_hook; 1608 SV *sv_hook;
1519 void (*xs_hook)(void); 1609 void (*xs_hook)(void);
1520 1610
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1611 coro = SvSTATE (coro_sv);
1525 1612
1526 if (coro->flags & CF_READY) 1613 if (coro->flags & CF_READY)
1527 return 0; 1614 return 0;
1528 1615
… …
1541 ENTER; 1628 ENTER;
1542 SAVETMPS; 1629 SAVETMPS;
1543 1630
1544 PUSHMARK (SP); 1631 PUSHMARK (SP);
1545 PUTBACK; 1632 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1633 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1634
1549 FREETMPS; 1635 FREETMPS;
1550 LEAVE; 1636 LEAVE;
1551 } 1637 }
1552 1638
… …
1560api_is_ready (pTHX_ SV *coro_sv) 1646api_is_ready (pTHX_ SV *coro_sv)
1561{ 1647{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1648 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1649}
1564 1650
1651/* expects to own a reference to next->hv */
1565INLINE void 1652INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1653prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1654{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1655 SV *prev_sv = SvRV (coro_current);
1656
1608 ta->prev = SvSTATE_hv (prev_sv); 1657 ta->prev = SvSTATE_hv (prev_sv);
1658 ta->next = next;
1659
1609 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1662 SvRV_set (coro_current, (SV *)next->hv);
1613 1663
1614 free_coro_mortal (aTHX); 1664 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1665 coro_mortal = prev_sv;
1616} 1666}
1617 1667
1668static void
1669prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1670{
1671 for (;;)
1672 {
1673 SV *next_sv = coro_deq (aTHX);
1674
1675 if (expect_true (next_sv))
1676 {
1677 struct coro *next = SvSTATE_hv (next_sv);
1678
1679 /* cannot transfer to destroyed coros, skip and look for next */
1680 if (expect_false (next->flags & CF_DESTROYED))
1681 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1682 else
1683 {
1684 next->flags &= ~CF_READY;
1685 --coro_nready;
1686
1687 prepare_schedule_to (aTHX_ ta, next);
1688 break;
1689 }
1690 }
1691 else
1692 {
1693 /* nothing to schedule: call the idle handler */
1694 if (SvROK (sv_idle)
1695 && SvOBJECT (SvRV (sv_idle)))
1696 {
1697 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1698 api_ready (aTHX_ SvRV (sv_idle));
1699 --coro_nready;
1700 }
1701 else
1702 {
1703 dSP;
1704
1705 ENTER;
1706 SAVETMPS;
1707
1708 PUSHMARK (SP);
1709 PUTBACK;
1710 call_sv (sv_idle, G_VOID | G_DISCARD);
1711
1712 FREETMPS;
1713 LEAVE;
1714 }
1715 }
1716 }
1717}
1718
1618INLINE void 1719INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1720prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1721{
1621 api_ready (aTHX_ coro_current); 1722 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1723 prepare_schedule (aTHX_ ta);
… …
1641{ 1742{
1642 struct coro_transfer_args ta; 1743 struct coro_transfer_args ta;
1643 1744
1644 prepare_schedule (aTHX_ &ta); 1745 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 1746 TRANSFER (ta, 1);
1747}
1748
1749static void
1750api_schedule_to (pTHX_ SV *coro_sv)
1751{
1752 struct coro_transfer_args ta;
1753 struct coro *next = SvSTATE (coro_sv);
1754
1755 SvREFCNT_inc_NN (coro_sv);
1756 prepare_schedule_to (aTHX_ &ta, next);
1646} 1757}
1647 1758
1648static int 1759static int
1649api_cede (pTHX) 1760api_cede (pTHX)
1650{ 1761{
… …
1679static void 1790static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1791api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1792{
1682 struct coro *coro = SvSTATE (coro_sv); 1793 struct coro *coro = SvSTATE (coro_sv);
1683 1794
1795 if (coro->flags & CF_RUNNING)
1796 croak ("cannot enable tracing on a running coroutine, caught");
1797
1684 if (flags & CC_TRACE) 1798 if (flags & CC_TRACE)
1685 { 1799 {
1686 if (!coro->cctx) 1800 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1801 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1802 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1803 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 1804
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1805 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 1806 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1807 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 1808 {
… …
1697 if (coro->flags & CF_RUNNING) 1811 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 1812 PL_runops = RUNOPS_DEFAULT;
1699 else 1813 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 1814 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 1815 }
1816}
1817
1818static void
1819coro_call_on_destroy (pTHX_ struct coro *coro)
1820{
1821 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1822 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1823
1824 if (on_destroyp)
1825 {
1826 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1827
1828 while (AvFILLp (on_destroy) >= 0)
1829 {
1830 dSP; /* don't disturb outer sp */
1831 SV *cb = av_pop (on_destroy);
1832
1833 PUSHMARK (SP);
1834
1835 if (statusp)
1836 {
1837 int i;
1838 AV *status = (AV *)SvRV (*statusp);
1839 EXTEND (SP, AvFILLp (status) + 1);
1840
1841 for (i = 0; i <= AvFILLp (status); ++i)
1842 PUSHs (AvARRAY (status)[i]);
1843 }
1844
1845 PUTBACK;
1846 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1847 }
1848 }
1849}
1850
1851static void
1852slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 int i;
1855 HV *hv = (HV *)SvRV (coro_current);
1856 AV *av = newAV ();
1857
1858 av_extend (av, items - 1);
1859 for (i = 0; i < items; ++i)
1860 av_push (av, SvREFCNT_inc_NN (arg [i]));
1861
1862 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1863
1864 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1865 api_ready (aTHX_ sv_manager);
1866
1867 frame->prepare = prepare_schedule;
1868 frame->check = slf_check_repeat;
1869}
1870
1871/*****************************************************************************/
1872/* async pool handler */
1873
1874static int
1875slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1876{
1877 HV *hv = (HV *)SvRV (coro_current);
1878 struct coro *coro = (struct coro *)frame->data;
1879
1880 if (!coro->invoke_cb)
1881 return 1; /* loop till we have invoke */
1882 else
1883 {
1884 hv_store (hv, "desc", sizeof ("desc") - 1,
1885 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1886
1887 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1888
1889 {
1890 dSP;
1891 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1892 PUTBACK;
1893 }
1894
1895 SvREFCNT_dec (GvAV (PL_defgv));
1896 GvAV (PL_defgv) = coro->invoke_av;
1897 coro->invoke_av = 0;
1898
1899 return 0;
1900 }
1901}
1902
1903static void
1904slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1905{
1906 HV *hv = (HV *)SvRV (coro_current);
1907 struct coro *coro = SvSTATE_hv ((SV *)hv);
1908
1909 if (expect_true (coro->saved_deffh))
1910 {
1911 /* subsequent iteration */
1912 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1913 coro->saved_deffh = 0;
1914
1915 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1916 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1917 {
1918 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1919 coro->invoke_av = newAV ();
1920
1921 frame->prepare = prepare_nop;
1922 }
1923 else
1924 {
1925 av_clear (GvAV (PL_defgv));
1926 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1927
1928 coro->prio = 0;
1929
1930 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1931 api_trace (aTHX_ coro_current, 0);
1932
1933 frame->prepare = prepare_schedule;
1934 av_push (av_async_pool, SvREFCNT_inc (hv));
1935 }
1936 }
1937 else
1938 {
1939 /* first iteration, simply fall through */
1940 frame->prepare = prepare_nop;
1941 }
1942
1943 frame->check = slf_check_pool_handler;
1944 frame->data = (void *)coro;
1945}
1946
1947/*****************************************************************************/
1948/* rouse callback */
1949
1950#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1951
1952static void
1953coro_rouse_callback (pTHX_ CV *cv)
1954{
1955 dXSARGS;
1956 SV *data = (SV *)GENSUB_ARG;
1957
1958 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1959 {
1960 /* first call, set args */
1961 AV *av = newAV ();
1962 SV *coro = SvRV (data);
1963
1964 SvRV_set (data, (SV *)av);
1965 api_ready (aTHX_ coro);
1966 SvREFCNT_dec (coro);
1967
1968 /* better take a full copy of the arguments */
1969 while (items--)
1970 av_store (av, items, newSVsv (ST (items)));
1971 }
1972
1973 XSRETURN_EMPTY;
1974}
1975
1976static int
1977slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1978{
1979 SV *data = (SV *)frame->data;
1980
1981 if (CORO_THROW)
1982 return 0;
1983
1984 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1985 return 1;
1986
1987 /* now push all results on the stack */
1988 {
1989 dSP;
1990 AV *av = (AV *)SvRV (data);
1991 int i;
1992
1993 EXTEND (SP, AvFILLp (av) + 1);
1994 for (i = 0; i <= AvFILLp (av); ++i)
1995 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1996
1997 /* we have stolen the elements, so ste length to zero and free */
1998 AvFILLp (av) = -1;
1999 av_undef (av);
2000
2001 PUTBACK;
2002 }
2003
2004 return 0;
2005}
2006
2007static void
2008slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2009{
2010 SV *cb;
2011
2012 if (items)
2013 cb = arg [0];
2014 else
2015 {
2016 struct coro *coro = SvSTATE_current;
2017
2018 if (!coro->rouse_cb)
2019 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2020
2021 cb = sv_2mortal (coro->rouse_cb);
2022 coro->rouse_cb = 0;
2023 }
2024
2025 if (!SvROK (cb)
2026 || SvTYPE (SvRV (cb)) != SVt_PVCV
2027 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2028 croak ("Coro::rouse_wait called with illegal callback argument,");
2029
2030 {
2031 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2032 SV *data = (SV *)GENSUB_ARG;
2033
2034 frame->data = (void *)data;
2035 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2036 frame->check = slf_check_rouse_wait;
2037 }
2038}
2039
2040static SV *
2041coro_new_rouse_cb (pTHX)
2042{
2043 HV *hv = (HV *)SvRV (coro_current);
2044 struct coro *coro = SvSTATE_hv (hv);
2045 SV *data = newRV_inc ((SV *)hv);
2046 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2047
2048 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2049 SvREFCNT_dec (data); /* magicext increases the refcount */
2050
2051 SvREFCNT_dec (coro->rouse_cb);
2052 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2053
2054 return cb;
2055}
2056
2057/*****************************************************************************/
2058/* schedule-like-function opcode (SLF) */
2059
2060static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2061static const CV *slf_cv;
2062static SV **slf_argv;
2063static int slf_argc, slf_arga; /* count, allocated */
2064static I32 slf_ax; /* top of stack, for restore */
2065
2066/* this restores the stack in the case we patched the entersub, to */
2067/* recreate the stack frame as perl will on following calls */
2068/* since entersub cleared the stack */
2069static OP *
2070pp_restore (pTHX)
2071{
2072 int i;
2073 SV **SP = PL_stack_base + slf_ax;
2074
2075 PUSHMARK (SP);
2076
2077 EXTEND (SP, slf_argc + 1);
2078
2079 for (i = 0; i < slf_argc; ++i)
2080 PUSHs (sv_2mortal (slf_argv [i]));
2081
2082 PUSHs ((SV *)CvGV (slf_cv));
2083
2084 RETURNOP (slf_restore.op_first);
2085}
2086
2087static void
2088slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2089{
2090 SV **arg = (SV **)slf_frame.data;
2091
2092 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2093}
2094
2095static void
2096slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097{
2098 if (items != 2)
2099 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2100
2101 frame->prepare = slf_prepare_transfer;
2102 frame->check = slf_check_nop;
2103 frame->data = (void *)arg; /* let's hope it will stay valid */
2104}
2105
2106static void
2107slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_schedule;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2115{
2116 struct coro *next = (struct coro *)slf_frame.data;
2117
2118 SvREFCNT_inc_NN (next->hv);
2119 prepare_schedule_to (aTHX_ ta, next);
2120}
2121
2122static void
2123slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2124{
2125 if (!items)
2126 croak ("Coro::schedule_to expects a coroutine argument, caught");
2127
2128 frame->data = (void *)SvSTATE (arg [0]);
2129 frame->prepare = slf_prepare_schedule_to;
2130 frame->check = slf_check_nop;
2131}
2132
2133static void
2134slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2135{
2136 api_ready (aTHX_ SvRV (coro_current));
2137
2138 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2139}
2140
2141static void
2142slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2143{
2144 frame->prepare = prepare_cede;
2145 frame->check = slf_check_nop;
2146}
2147
2148static void
2149slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2150{
2151 frame->prepare = prepare_cede_notself;
2152 frame->check = slf_check_nop;
2153}
2154
2155/*
2156 * these not obviously related functions are all rolled into one
2157 * function to increase chances that they all will call transfer with the same
2158 * stack offset
2159 * SLF stands for "schedule-like-function".
2160 */
2161static OP *
2162pp_slf (pTHX)
2163{
2164 I32 checkmark; /* mark SP to see how many elements check has pushed */
2165
2166 /* set up the slf frame, unless it has already been set-up */
2167 /* the latter happens when a new coro has been started */
2168 /* or when a new cctx was attached to an existing coroutine */
2169 if (expect_true (!slf_frame.prepare))
2170 {
2171 /* first iteration */
2172 dSP;
2173 SV **arg = PL_stack_base + TOPMARK + 1;
2174 int items = SP - arg; /* args without function object */
2175 SV *gv = *sp;
2176
2177 /* do a quick consistency check on the "function" object, and if it isn't */
2178 /* for us, divert to the real entersub */
2179 if (SvTYPE (gv) != SVt_PVGV
2180 || !GvCV (gv)
2181 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2182 return PL_ppaddr[OP_ENTERSUB](aTHX);
2183
2184 if (!(PL_op->op_flags & OPf_STACKED))
2185 {
2186 /* ampersand-form of call, use @_ instead of stack */
2187 AV *av = GvAV (PL_defgv);
2188 arg = AvARRAY (av);
2189 items = AvFILLp (av) + 1;
2190 }
2191
2192 /* now call the init function, which needs to set up slf_frame */
2193 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2194 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2195
2196 /* pop args */
2197 SP = PL_stack_base + POPMARK;
2198
2199 PUTBACK;
2200 }
2201
2202 /* now that we have a slf_frame, interpret it! */
2203 /* we use a callback system not to make the code needlessly */
2204 /* complicated, but so we can run multiple perl coros from one cctx */
2205
2206 do
2207 {
2208 struct coro_transfer_args ta;
2209
2210 slf_frame.prepare (aTHX_ &ta);
2211 TRANSFER (ta, 0);
2212
2213 checkmark = PL_stack_sp - PL_stack_base;
2214 }
2215 while (slf_frame.check (aTHX_ &slf_frame));
2216
2217 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2218
2219 /* exception handling */
2220 if (expect_false (CORO_THROW))
2221 {
2222 SV *exception = sv_2mortal (CORO_THROW);
2223
2224 CORO_THROW = 0;
2225 sv_setsv (ERRSV, exception);
2226 croak (0);
2227 }
2228
2229 /* return value handling - mostly like entersub */
2230 /* make sure we put something on the stack in scalar context */
2231 if (GIMME_V == G_SCALAR)
2232 {
2233 dSP;
2234 SV **bot = PL_stack_base + checkmark;
2235
2236 if (sp == bot) /* too few, push undef */
2237 bot [1] = &PL_sv_undef;
2238 else if (sp != bot + 1) /* too many, take last one */
2239 bot [1] = *sp;
2240
2241 SP = bot + 1;
2242
2243 PUTBACK;
2244 }
2245
2246 return NORMAL;
2247}
2248
2249static void
2250api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2251{
2252 int i;
2253 SV **arg = PL_stack_base + ax;
2254 int items = PL_stack_sp - arg + 1;
2255
2256 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2257
2258 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2259 && PL_op->op_ppaddr != pp_slf)
2260 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2261
2262 CvFLAGS (cv) |= CVf_SLF;
2263 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2264 slf_cv = cv;
2265
2266 /* we patch the op, and then re-run the whole call */
2267 /* we have to put the same argument on the stack for this to work */
2268 /* and this will be done by pp_restore */
2269 slf_restore.op_next = (OP *)&slf_restore;
2270 slf_restore.op_type = OP_CUSTOM;
2271 slf_restore.op_ppaddr = pp_restore;
2272 slf_restore.op_first = PL_op;
2273
2274 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2275
2276 if (PL_op->op_flags & OPf_STACKED)
2277 {
2278 if (items > slf_arga)
2279 {
2280 slf_arga = items;
2281 free (slf_argv);
2282 slf_argv = malloc (slf_arga * sizeof (SV *));
2283 }
2284
2285 slf_argc = items;
2286
2287 for (i = 0; i < items; ++i)
2288 slf_argv [i] = SvREFCNT_inc (arg [i]);
2289 }
2290 else
2291 slf_argc = 0;
2292
2293 PL_op->op_ppaddr = pp_slf;
2294 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2295
2296 PL_op = (OP *)&slf_restore;
1702} 2297}
1703 2298
1704/*****************************************************************************/ 2299/*****************************************************************************/
1705/* PerlIO::cede */ 2300/* PerlIO::cede */
1706 2301
… …
1775 PerlIOBuf_get_cnt, 2370 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2371 PerlIOBuf_set_ptrcnt,
1777}; 2372};
1778 2373
1779/*****************************************************************************/ 2374/*****************************************************************************/
2375/* Coro::Semaphore & Coro::Signal */
1780 2376
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2377static SV *
1791pp_restore (pTHX) 2378coro_waitarray_new (pTHX_ int count)
1792{ 2379{
1793 int i; 2380 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2381 AV *av = newAV ();
2382 SV **ary;
1795 2383
1796 PUSHMARK (SP); 2384 /* unfortunately, building manually saves memory */
2385 Newx (ary, 2, SV *);
2386 AvALLOC (av) = ary;
2387#if PERL_VERSION_ATLEAST (5,10,0)
2388 AvARRAY (av) = ary;
2389#else
2390 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2391 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2392 SvPVX ((SV *)av) = (char *)ary;
2393#endif
2394 AvMAX (av) = 1;
2395 AvFILLp (av) = 0;
2396 ary [0] = newSViv (count);
1797 2397
1798 EXTEND (SP, slf_argc + 1); 2398 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2399}
1807 2400
1808static void 2401/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (PL_op->op_flags & OPf_STACKED)
1988 {
1989 if (items > slf_arga)
1990 {
1991 slf_arga = items;
1992 free (slf_argv);
1993 slf_argv = malloc (slf_arga * sizeof (SV *));
1994 }
1995
1996 slf_argc = items;
1997
1998 for (i = 0; i < items; ++i)
1999 slf_argv [i] = SvREFCNT_inc (arg [i]);
2000 }
2001 else
2002 slf_argc = 0;
2003
2004 PL_op->op_ppaddr = pp_slf;
2005 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007 PL_op = (OP *)&slf_restore;
2008}
2009
2010/*****************************************************************************/
2011 2402
2012static void 2403static void
2013coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2404coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014{ 2405{
2015 SV *count_sv = AvARRAY (av)[0]; 2406 SV *count_sv = AvARRAY (av)[0];
… …
2027 AvARRAY (av)[0] = AvARRAY (av)[1]; 2418 AvARRAY (av)[0] = AvARRAY (av)[1];
2028 AvARRAY (av)[1] = count_sv; 2419 AvARRAY (av)[1] = count_sv;
2029 cb = av_shift (av); 2420 cb = av_shift (av);
2030 2421
2031 if (SvOBJECT (cb)) 2422 if (SvOBJECT (cb))
2423 {
2032 api_ready (aTHX_ cb); 2424 api_ready (aTHX_ cb);
2033 else 2425 --count;
2034 croak ("callbacks not yet supported"); 2426 }
2427 else if (SvTYPE (cb) == SVt_PVCV)
2428 {
2429 dSP;
2430 PUSHMARK (SP);
2431 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2432 PUTBACK;
2433 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2434 }
2035 2435
2036 SvREFCNT_dec (cb); 2436 SvREFCNT_dec (cb);
2037
2038 --count;
2039 } 2437 }
2040} 2438}
2041 2439
2042static void 2440static void
2043coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2441coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2045 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2443 /* call $sem->adjust (0) to possibly wake up some other waiters */
2046 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2444 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2047} 2445}
2048 2446
2049static int 2447static int
2050slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2448slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2051{ 2449{
2052 AV *av = (AV *)frame->data; 2450 AV *av = (AV *)frame->data;
2053 SV *count_sv = AvARRAY (av)[0]; 2451 SV *count_sv = AvARRAY (av)[0];
2054 2452
2453 /* if we are about to throw, don't actually acquire the lock, just throw */
2454 if (CORO_THROW)
2455 return 0;
2055 if (SvIVX (count_sv) > 0) 2456 else if (SvIVX (count_sv) > 0)
2056 { 2457 {
2057 SvSTATE_current->on_destroy = 0; 2458 SvSTATE_current->on_destroy = 0;
2459
2460 if (acquire)
2058 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2461 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2462 else
2463 coro_semaphore_adjust (aTHX_ av, 0);
2464
2059 return 0; 2465 return 0;
2060 } 2466 }
2061 else 2467 else
2062 { 2468 {
2063 int i; 2469 int i;
… …
2072 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2478 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2073 return 1; 2479 return 1;
2074 } 2480 }
2075} 2481}
2076 2482
2077static void 2483static int
2484slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2485{
2486 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2487}
2488
2489static int
2490slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2493}
2494
2495static void
2078slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2496slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2079{ 2497{
2080 AV *av = (AV *)SvRV (arg [0]); 2498 AV *av = (AV *)SvRV (arg [0]);
2081 2499
2082 if (SvIVX (AvARRAY (av)[0]) > 0) 2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2083 { 2501 {
2084 frame->data = (void *)av; 2502 frame->data = (void *)av;
2085 frame->prepare = prepare_nop; 2503 frame->prepare = prepare_nop;
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 } 2504 }
2088 else 2505 else
2089 { 2506 {
2090 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2507 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091 2508
2092 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2509 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093 frame->prepare = prepare_schedule; 2510 frame->prepare = prepare_schedule;
2094 2511
2095 /* to avoid race conditions when a woken-up coro gets terminated */ 2512 /* to avoid race conditions when a woken-up coro gets terminated */
2096 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2513 /* we arrange for a temporary on_destroy that calls adjust (0) */
2097 assert (!SvSTATE_current->on_destroy);//D
2098 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2514 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2099 } 2515 }
2516}
2100 2517
2518static void
2519slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2520{
2521 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2101 frame->check = slf_check_semaphore_down; 2522 frame->check = slf_check_semaphore_down;
2523}
2102 2524
2525static void
2526slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2527{
2528 if (items >= 2)
2529 {
2530 /* callback form */
2531 AV *av = (AV *)SvRV (arg [0]);
2532 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2533
2534 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2535
2536 if (SvIVX (AvARRAY (av)[0]) > 0)
2537 coro_semaphore_adjust (aTHX_ av, 0);
2538
2539 frame->prepare = prepare_nop;
2540 frame->check = slf_check_nop;
2541 }
2542 else
2543 {
2544 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2545 frame->check = slf_check_semaphore_wait;
2546 }
2547}
2548
2549/* signal */
2550
2551static void
2552coro_signal_wake (pTHX_ AV *av, int count)
2553{
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555
2556 /* now signal count waiters */
2557 while (count > 0 && AvFILLp (av) > 0)
2558 {
2559 SV *cb;
2560
2561 /* swap first two elements so we can shift a waiter */
2562 cb = AvARRAY (av)[0];
2563 AvARRAY (av)[0] = AvARRAY (av)[1];
2564 AvARRAY (av)[1] = cb;
2565
2566 cb = av_shift (av);
2567
2568 api_ready (aTHX_ cb);
2569 sv_setiv (cb, 0); /* signal waiter */
2570 SvREFCNT_dec (cb);
2571
2572 --count;
2573 }
2574}
2575
2576static int
2577slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2578{
2579 /* if we are about to throw, also stop waiting */
2580 return SvROK ((SV *)frame->data) && !CORO_THROW;
2581}
2582
2583static void
2584slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2585{
2586 AV *av = (AV *)SvRV (arg [0]);
2587
2588 if (SvIVX (AvARRAY (av)[0]))
2589 {
2590 SvIVX (AvARRAY (av)[0]) = 0;
2591 frame->prepare = prepare_nop;
2592 frame->check = slf_check_nop;
2593 }
2594 else
2595 {
2596 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2597
2598 av_push (av, waiter);
2599
2600 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2601 frame->prepare = prepare_schedule;
2602 frame->check = slf_check_signal_wait;
2603 }
2103} 2604}
2104 2605
2105/*****************************************************************************/ 2606/*****************************************************************************/
2607/* Coro::AIO */
2106 2608
2107#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2609#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2108 2610
2109/* create a closure from XS, returns a code reference */ 2611/* helper storage struct */
2110/* the arg can be accessed via GENSUB_ARG from the callback */ 2612struct io_state
2111/* the callback must use dXSARGS/XSRETURN */
2112static SV *
2113gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2114{ 2613{
2115 CV *cv = (CV *)NEWSV (0, 0); 2614 int errorno;
2615 I32 laststype; /* U16 in 5.10.0 */
2616 int laststatval;
2617 Stat_t statcache;
2618};
2116 2619
2620static void
2621coro_aio_callback (pTHX_ CV *cv)
2622{
2623 dXSARGS;
2624 AV *state = (AV *)GENSUB_ARG;
2625 SV *coro = av_pop (state);
2626 SV *data_sv = newSV (sizeof (struct io_state));
2627
2628 av_extend (state, items - 1);
2629
2117 sv_upgrade ((SV *)cv, SVt_PVCV); 2630 sv_upgrade (data_sv, SVt_PV);
2631 SvCUR_set (data_sv, sizeof (struct io_state));
2632 SvPOK_only (data_sv);
2118 2633
2119 CvANON_on (cv); 2634 {
2120 CvISXSUB_on (cv); 2635 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2121 CvXSUB (cv) = xsub;
2122 GENSUB_ARG = arg;
2123 2636
2124 return newRV_noinc ((SV *)cv); 2637 data->errorno = errno;
2638 data->laststype = PL_laststype;
2639 data->laststatval = PL_laststatval;
2640 data->statcache = PL_statcache;
2641 }
2642
2643 /* now build the result vector out of all the parameters and the data_sv */
2644 {
2645 int i;
2646
2647 for (i = 0; i < items; ++i)
2648 av_push (state, SvREFCNT_inc_NN (ST (i)));
2649 }
2650
2651 av_push (state, data_sv);
2652
2653 api_ready (aTHX_ coro);
2654 SvREFCNT_dec (coro);
2655 SvREFCNT_dec ((AV *)state);
2656}
2657
2658static int
2659slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2660{
2661 AV *state = (AV *)frame->data;
2662
2663 /* if we are about to throw, return early */
2664 /* this does not cancel the aio request, but at least */
2665 /* it quickly returns */
2666 if (CORO_THROW)
2667 return 0;
2668
2669 /* one element that is an RV? repeat! */
2670 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2671 return 1;
2672
2673 /* restore status */
2674 {
2675 SV *data_sv = av_pop (state);
2676 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2677
2678 errno = data->errorno;
2679 PL_laststype = data->laststype;
2680 PL_laststatval = data->laststatval;
2681 PL_statcache = data->statcache;
2682
2683 SvREFCNT_dec (data_sv);
2684 }
2685
2686 /* push result values */
2687 {
2688 dSP;
2689 int i;
2690
2691 EXTEND (SP, AvFILLp (state) + 1);
2692 for (i = 0; i <= AvFILLp (state); ++i)
2693 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2694
2695 PUTBACK;
2696 }
2697
2698 return 0;
2699}
2700
2701static void
2702slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2703{
2704 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2705 SV *coro_hv = SvRV (coro_current);
2706 struct coro *coro = SvSTATE_hv (coro_hv);
2707
2708 /* put our coroutine id on the state arg */
2709 av_push (state, SvREFCNT_inc_NN (coro_hv));
2710
2711 /* first see whether we have a non-zero priority and set it as AIO prio */
2712 if (coro->prio)
2713 {
2714 dSP;
2715
2716 static SV *prio_cv;
2717 static SV *prio_sv;
2718
2719 if (expect_false (!prio_cv))
2720 {
2721 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2722 prio_sv = newSViv (0);
2723 }
2724
2725 PUSHMARK (SP);
2726 sv_setiv (prio_sv, coro->prio);
2727 XPUSHs (prio_sv);
2728
2729 PUTBACK;
2730 call_sv (prio_cv, G_VOID | G_DISCARD);
2731 }
2732
2733 /* now call the original request */
2734 {
2735 dSP;
2736 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2737 int i;
2738
2739 PUSHMARK (SP);
2740
2741 /* first push all args to the stack */
2742 EXTEND (SP, items + 1);
2743
2744 for (i = 0; i < items; ++i)
2745 PUSHs (arg [i]);
2746
2747 /* now push the callback closure */
2748 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2749
2750 /* now call the AIO function - we assume our request is uncancelable */
2751 PUTBACK;
2752 call_sv ((SV *)req, G_VOID | G_DISCARD);
2753 }
2754
2755 /* now that the requets is going, we loop toll we have a result */
2756 frame->data = (void *)state;
2757 frame->prepare = prepare_schedule;
2758 frame->check = slf_check_aio_req;
2759}
2760
2761static void
2762coro_aio_req_xs (pTHX_ CV *cv)
2763{
2764 dXSARGS;
2765
2766 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2767
2768 XSRETURN_EMPTY;
2125} 2769}
2126 2770
2127/*****************************************************************************/ 2771/*****************************************************************************/
2772
2773#if CORO_CLONE
2774# include "clone.c"
2775#endif
2128 2776
2129MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2777MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2130 2778
2131PROTOTYPES: DISABLE 2779PROTOTYPES: DISABLE
2132 2780
… …
2137 coro_thx = PERL_GET_CONTEXT; 2785 coro_thx = PERL_GET_CONTEXT;
2138# endif 2786# endif
2139#endif 2787#endif
2140 BOOT_PAGESIZE; 2788 BOOT_PAGESIZE;
2141 2789
2790 cctx_current = cctx_new_empty ();
2791
2142 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2792 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2143 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2793 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2144 2794
2145 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2795 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2146 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2796 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2165 2815
2166 { 2816 {
2167 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2817 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2168 2818
2169 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2819 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2170 hv_store_ent (PL_custom_op_names, slf, 2820 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2171 newSVpv ("coro_slf", 0), 0);
2172 2821
2173 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2822 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2174 hv_store_ent (PL_custom_op_descs, slf, 2823 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2175 newSVpv ("coro schedule like function", 0), 0);
2176 } 2824 }
2177 2825
2178 coroapi.ver = CORO_API_VERSION; 2826 coroapi.ver = CORO_API_VERSION;
2179 coroapi.rev = CORO_API_REVISION; 2827 coroapi.rev = CORO_API_REVISION;
2180 2828
… …
2199 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2847 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2200} 2848}
2201 2849
2202SV * 2850SV *
2203new (char *klass, ...) 2851new (char *klass, ...)
2852 ALIAS:
2853 Coro::new = 1
2204 CODE: 2854 CODE:
2205{ 2855{
2206 struct coro *coro; 2856 struct coro *coro;
2207 MAGIC *mg; 2857 MAGIC *mg;
2208 HV *hv; 2858 HV *hv;
2859 CV *cb;
2209 int i; 2860 int i;
2861
2862 if (items > 1)
2863 {
2864 cb = coro_sv_2cv (aTHX_ ST (1));
2865
2866 if (!ix)
2867 {
2868 if (CvISXSUB (cb))
2869 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2870
2871 if (!CvROOT (cb))
2872 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2873 }
2874 }
2210 2875
2211 Newz (0, coro, 1, struct coro); 2876 Newz (0, coro, 1, struct coro);
2212 coro->args = newAV (); 2877 coro->args = newAV ();
2213 coro->flags = CF_NEW; 2878 coro->flags = CF_NEW;
2214 2879
… …
2219 coro->hv = hv = newHV (); 2884 coro->hv = hv = newHV ();
2220 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2885 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2221 mg->mg_flags |= MGf_DUP; 2886 mg->mg_flags |= MGf_DUP;
2222 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2887 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2223 2888
2889 if (items > 1)
2890 {
2224 av_extend (coro->args, items - 1); 2891 av_extend (coro->args, items - 1 + ix - 1);
2892
2893 if (ix)
2894 {
2895 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2896 cb = cv_coro_run;
2897 }
2898
2899 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2900
2225 for (i = 1; i < items; i++) 2901 for (i = 2; i < items; i++)
2226 av_push (coro->args, newSVsv (ST (i))); 2902 av_push (coro->args, newSVsv (ST (i)));
2903 }
2227} 2904}
2228 OUTPUT: 2905 OUTPUT:
2229 RETVAL 2906 RETVAL
2230
2231void
2232_set_stacklevel (...)
2233 CODE:
2234 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2235 2907
2236void 2908void
2237transfer (...) 2909transfer (...)
2238 PROTOTYPE: $$ 2910 PROTOTYPE: $$
2239 CODE: 2911 CODE:
… …
2249void 2921void
2250_exit (int code) 2922_exit (int code)
2251 PROTOTYPE: $ 2923 PROTOTYPE: $
2252 CODE: 2924 CODE:
2253 _exit (code); 2925 _exit (code);
2926
2927SV *
2928clone (Coro::State coro)
2929 CODE:
2930{
2931#if CORO_CLONE
2932 struct coro *ncoro = coro_clone (aTHX_ coro);
2933 MAGIC *mg;
2934 /* TODO: too much duplication */
2935 ncoro->hv = newHV ();
2936 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2937 mg->mg_flags |= MGf_DUP;
2938 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2939#else
2940 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2941#endif
2942}
2943 OUTPUT:
2944 RETVAL
2254 2945
2255int 2946int
2256cctx_stacksize (int new_stacksize = 0) 2947cctx_stacksize (int new_stacksize = 0)
2257 PROTOTYPE: ;$ 2948 PROTOTYPE: ;$
2258 CODE: 2949 CODE:
… …
2365throw (Coro::State self, SV *throw = &PL_sv_undef) 3056throw (Coro::State self, SV *throw = &PL_sv_undef)
2366 PROTOTYPE: $;$ 3057 PROTOTYPE: $;$
2367 CODE: 3058 CODE:
2368{ 3059{
2369 struct coro *current = SvSTATE_current; 3060 struct coro *current = SvSTATE_current;
2370 SV **throwp = self == current ? &coro_throw : &self->throw; 3061 SV **throwp = self == current ? &CORO_THROW : &self->except;
2371 SvREFCNT_dec (*throwp); 3062 SvREFCNT_dec (*throwp);
2372 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3063 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2373} 3064}
2374 3065
2375void 3066void
… …
2379 3070
2380SV * 3071SV *
2381has_cctx (Coro::State coro) 3072has_cctx (Coro::State coro)
2382 PROTOTYPE: $ 3073 PROTOTYPE: $
2383 CODE: 3074 CODE:
2384 RETVAL = boolSV (!!coro->cctx); 3075 /* maybe manage the running flag differently */
3076 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2385 OUTPUT: 3077 OUTPUT:
2386 RETVAL 3078 RETVAL
2387 3079
2388int 3080int
2389is_traced (Coro::State coro) 3081is_traced (Coro::State coro)
… …
2409 3101
2410void 3102void
2411force_cctx () 3103force_cctx ()
2412 PROTOTYPE: 3104 PROTOTYPE:
2413 CODE: 3105 CODE:
2414 SvSTATE_current->cctx->idle_sp = 0; 3106 cctx_current->idle_sp = 0;
2415 3107
2416void 3108void
2417swap_defsv (Coro::State self) 3109swap_defsv (Coro::State self)
2418 PROTOTYPE: $ 3110 PROTOTYPE: $
2419 ALIAS: 3111 ALIAS:
… …
2427 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3119 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2428 3120
2429 SV *tmp = *src; *src = *dst; *dst = tmp; 3121 SV *tmp = *src; *src = *dst; *dst = tmp;
2430 } 3122 }
2431 3123
3124
2432MODULE = Coro::State PACKAGE = Coro 3125MODULE = Coro::State PACKAGE = Coro
2433 3126
2434BOOT: 3127BOOT:
2435{ 3128{
2436 int i; 3129 int i;
2437 3130
2438 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2439 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3131 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2440 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3132 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2441 3133 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3134 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2442 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3135 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2443 SvREADONLY_on (coro_current); 3136 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3137 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3138 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3139 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3140
3141 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3142 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3143 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3144 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2444 3145
2445 coro_stash = gv_stashpv ("Coro", TRUE); 3146 coro_stash = gv_stashpv ("Coro", TRUE);
2446 3147
2447 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3148 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2448 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3149 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2456 3157
2457 { 3158 {
2458 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3159 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2459 3160
2460 coroapi.schedule = api_schedule; 3161 coroapi.schedule = api_schedule;
3162 coroapi.schedule_to = api_schedule_to;
2461 coroapi.cede = api_cede; 3163 coroapi.cede = api_cede;
2462 coroapi.cede_notself = api_cede_notself; 3164 coroapi.cede_notself = api_cede_notself;
2463 coroapi.ready = api_ready; 3165 coroapi.ready = api_ready;
2464 coroapi.is_ready = api_is_ready; 3166 coroapi.is_ready = api_is_ready;
2465 coroapi.nready = coro_nready; 3167 coroapi.nready = coro_nready;
2466 coroapi.current = coro_current; 3168 coroapi.current = coro_current;
2467 3169
2468 GCoroAPI = &coroapi; 3170 /*GCoroAPI = &coroapi;*/
2469 sv_setiv (sv, (IV)&coroapi); 3171 sv_setiv (sv, (IV)&coroapi);
2470 SvREADONLY_on (sv); 3172 SvREADONLY_on (sv);
2471 } 3173 }
2472} 3174}
3175
3176void
3177terminate (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2473 3180
2474void 3181void
2475schedule (...) 3182schedule (...)
2476 CODE: 3183 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3184 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2478 3185
2479void 3186void
3187schedule_to (...)
3188 CODE:
3189 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3190
3191void
3192cede_to (...)
3193 CODE:
3194 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3195
3196void
2480cede (...) 3197cede (...)
2481 CODE: 3198 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede); 3199 CORO_EXECUTE_SLF_XS (slf_init_cede);
2483 3200
2484void 3201void
2485cede_notself (...) 3202cede_notself (...)
2486 CODE: 3203 CODE:
2487 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3204 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3205
3206void
3207_cancel (Coro::State self)
3208 CODE:
3209 coro_state_destroy (aTHX_ self);
3210 coro_call_on_destroy (aTHX_ self);
2488 3211
2489void 3212void
2490_set_current (SV *current) 3213_set_current (SV *current)
2491 PROTOTYPE: $ 3214 PROTOTYPE: $
2492 CODE: 3215 CODE:
… …
2537 CODE: 3260 CODE:
2538 RETVAL = coro_nready; 3261 RETVAL = coro_nready;
2539 OUTPUT: 3262 OUTPUT:
2540 RETVAL 3263 RETVAL
2541 3264
2542# for async_pool speedup
2543void 3265void
2544_pool_1 (SV *cb) 3266_pool_handler (...)
2545 CODE: 3267 CODE:
2546{ 3268 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2547 HV *hv = (HV *)SvRV (coro_current);
2548 struct coro *coro = SvSTATE_hv ((SV *)hv);
2549 AV *defav = GvAV (PL_defgv);
2550 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2551 AV *invoke_av;
2552 int i, len;
2553
2554 if (!invoke)
2555 {
2556 SV *old = PL_diehook;
2557 PL_diehook = 0;
2558 SvREFCNT_dec (old);
2559 croak ("\3async_pool terminate\2\n");
2560 }
2561
2562 SvREFCNT_dec (coro->saved_deffh);
2563 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2564
2565 hv_store (hv, "desc", sizeof ("desc") - 1,
2566 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2567
2568 invoke_av = (AV *)SvRV (invoke);
2569 len = av_len (invoke_av);
2570
2571 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2572
2573 if (len > 0)
2574 {
2575 av_fill (defav, len - 1);
2576 for (i = 0; i < len; ++i)
2577 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2578 }
2579}
2580 3269
2581void 3270void
2582_pool_2 (SV *cb) 3271async_pool (SV *cv, ...)
2583 CODE:
2584{
2585 HV *hv = (HV *)SvRV (coro_current);
2586 struct coro *coro = SvSTATE_hv ((SV *)hv);
2587
2588 sv_setsv (cb, &PL_sv_undef);
2589
2590 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2591 coro->saved_deffh = 0;
2592
2593 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2594 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2595 {
2596 SV *old = PL_diehook;
2597 PL_diehook = 0;
2598 SvREFCNT_dec (old);
2599 croak ("\3async_pool terminate\2\n");
2600 }
2601
2602 av_clear (GvAV (PL_defgv));
2603 hv_store (hv, "desc", sizeof ("desc") - 1,
2604 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2605
2606 coro->prio = 0;
2607
2608 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2609 api_trace (aTHX_ coro_current, 0);
2610
2611 av_push (av_async_pool, newSVsv (coro_current));
2612}
2613
2614
2615MODULE = Coro::State PACKAGE = Coro::AIO
2616
2617void
2618_get_state (SV *self)
2619 PROTOTYPE: $ 3272 PROTOTYPE: &@
2620 PPCODE: 3273 PPCODE:
2621{ 3274{
2622 AV *defav = GvAV (PL_defgv); 3275 HV *hv = (HV *)av_pop (av_async_pool);
2623 AV *av = newAV (); 3276 AV *av = newAV ();
3277 SV *cb = ST (0);
2624 int i; 3278 int i;
2625 SV *data_sv = newSV (sizeof (struct io_state));
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627 SvCUR_set (data_sv, sizeof (struct io_state));
2628 SvPOK_only (data_sv);
2629 3279
2630 data->errorno = errno; 3280 av_extend (av, items - 2);
2631 data->laststype = PL_laststype; 3281 for (i = 1; i < items; ++i)
2632 data->laststatval = PL_laststatval;
2633 data->statcache = PL_statcache;
2634
2635 av_extend (av, AvFILLp (defav) + 1 + 1);
2636
2637 for (i = 0; i <= AvFILLp (defav); ++i)
2638 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3282 av_push (av, SvREFCNT_inc_NN (ST (i)));
2639 3283
2640 av_push (av, data_sv); 3284 if ((SV *)hv == &PL_sv_undef)
2641
2642 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2643
2644 api_ready (aTHX_ self);
2645}
2646
2647void
2648_set_state (SV *state)
2649 PROTOTYPE: $
2650 PPCODE:
2651{
2652 AV *av = (AV *)SvRV (state);
2653 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2654 int i;
2655
2656 errno = data->errorno;
2657 PL_laststype = data->laststype;
2658 PL_laststatval = data->laststatval;
2659 PL_statcache = data->statcache;
2660
2661 EXTEND (SP, AvFILLp (av));
2662 for (i = 0; i < AvFILLp (av); ++i)
2663 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2664}
2665
2666
2667MODULE = Coro::State PACKAGE = Coro::AnyEvent
2668
2669BOOT:
2670 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2671
2672void
2673_schedule (...)
2674 CODE:
2675{
2676 static int incede;
2677
2678 api_cede_notself (aTHX);
2679
2680 ++incede;
2681 while (coro_nready >= incede && api_cede (aTHX))
2682 ;
2683
2684 sv_setsv (sv_activity, &PL_sv_undef);
2685 if (coro_nready >= incede)
2686 { 3285 {
2687 PUSHMARK (SP); 3286 PUSHMARK (SP);
3287 EXTEND (SP, 2);
3288 PUSHs (sv_Coro);
3289 PUSHs ((SV *)cv_pool_handler);
2688 PUTBACK; 3290 PUTBACK;
2689 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3291 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2690 SPAGAIN; 3292 SPAGAIN;
3293
3294 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2691 } 3295 }
2692 3296
2693 --incede; 3297 {
3298 struct coro *coro = SvSTATE_hv (hv);
3299
3300 assert (!coro->invoke_cb);
3301 assert (!coro->invoke_av);
3302 coro->invoke_cb = SvREFCNT_inc (cb);
3303 coro->invoke_av = av;
3304 }
3305
3306 api_ready (aTHX_ (SV *)hv);
3307
3308 if (GIMME_V != G_VOID)
3309 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3310 else
3311 SvREFCNT_dec (hv);
2694} 3312}
3313
3314SV *
3315rouse_cb ()
3316 PROTOTYPE:
3317 CODE:
3318 RETVAL = coro_new_rouse_cb (aTHX);
3319 OUTPUT:
3320 RETVAL
3321
3322void
3323rouse_wait (...)
3324 PROTOTYPE: ;$
3325 PPCODE:
3326 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2695 3327
2696 3328
2697MODULE = Coro::State PACKAGE = PerlIO::cede 3329MODULE = Coro::State PACKAGE = PerlIO::cede
2698 3330
2699BOOT: 3331BOOT:
2700 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3332 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701 3333
3334
2702MODULE = Coro::State PACKAGE = Coro::Semaphore 3335MODULE = Coro::State PACKAGE = Coro::Semaphore
2703 3336
2704SV * 3337SV *
2705new (SV *klass, SV *count_ = 0) 3338new (SV *klass, SV *count = 0)
2706 CODE: 3339 CODE:
2707{ 3340 RETVAL = sv_bless (
2708 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3341 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2709 AV *av = newAV (); 3342 GvSTASH (CvGV (cv))
2710 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3343 );
2711 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3344 OUTPUT:
2712} 3345 RETVAL
3346
3347# helper for Coro::Channel
3348SV *
3349_alloc (int count)
3350 CODE:
3351 RETVAL = coro_waitarray_new (aTHX_ count);
2713 OUTPUT: 3352 OUTPUT:
2714 RETVAL 3353 RETVAL
2715 3354
2716SV * 3355SV *
2717count (SV *self) 3356count (SV *self)
… …
2726 adjust = 1 3365 adjust = 1
2727 CODE: 3366 CODE:
2728 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3367 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2729 3368
2730void 3369void
2731down (SV *self) 3370down (...)
2732 CODE: 3371 CODE:
2733 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3372 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3373
3374void
3375wait (...)
3376 CODE:
3377 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3378
2735void 3379void
2736try (SV *self) 3380try (SV *self)
2737 PPCODE: 3381 PPCODE:
2738{ 3382{
… …
2750 XSRETURN_NO; 3394 XSRETURN_NO;
2751} 3395}
2752 3396
2753void 3397void
2754waiters (SV *self) 3398waiters (SV *self)
2755 CODE: 3399 PPCODE:
2756{ 3400{
2757 AV *av = (AV *)SvRV (self); 3401 AV *av = (AV *)SvRV (self);
3402 int wcount = AvFILLp (av) + 1 - 1;
2758 3403
2759 if (GIMME_V == G_SCALAR) 3404 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3405 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3406 else
2762 { 3407 {
2763 int i; 3408 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3409 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3410 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3411 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3412 }
2768} 3413}
2769 3414
3415MODULE = Coro::State PACKAGE = Coro::Signal
3416
3417SV *
3418new (SV *klass)
3419 CODE:
3420 RETVAL = sv_bless (
3421 coro_waitarray_new (aTHX_ 0),
3422 GvSTASH (CvGV (cv))
3423 );
3424 OUTPUT:
3425 RETVAL
3426
3427void
3428wait (...)
3429 CODE:
3430 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3431
3432void
3433broadcast (SV *self)
3434 CODE:
3435{
3436 AV *av = (AV *)SvRV (self);
3437 coro_signal_wake (aTHX_ av, AvFILLp (av));
3438}
3439
3440void
3441send (SV *self)
3442 CODE:
3443{
3444 AV *av = (AV *)SvRV (self);
3445
3446 if (AvFILLp (av))
3447 coro_signal_wake (aTHX_ av, 1);
3448 else
3449 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3450}
3451
3452IV
3453awaited (SV *self)
3454 CODE:
3455 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3456 OUTPUT:
3457 RETVAL
3458
3459
3460MODULE = Coro::State PACKAGE = Coro::AnyEvent
3461
3462BOOT:
3463 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3464
3465void
3466_schedule (...)
3467 CODE:
3468{
3469 static int incede;
3470
3471 api_cede_notself (aTHX);
3472
3473 ++incede;
3474 while (coro_nready >= incede && api_cede (aTHX))
3475 ;
3476
3477 sv_setsv (sv_activity, &PL_sv_undef);
3478 if (coro_nready >= incede)
3479 {
3480 PUSHMARK (SP);
3481 PUTBACK;
3482 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3483 }
3484
3485 --incede;
3486}
3487
3488
3489MODULE = Coro::State PACKAGE = Coro::AIO
3490
3491void
3492_register (char *target, char *proto, SV *req)
3493 CODE:
3494{
3495 CV *req_cv = coro_sv_2cv (aTHX_ req);
3496 /* newXSproto doesn't return the CV on 5.8 */
3497 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3498 sv_setpv ((SV *)slf_cv, proto);
3499 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3500}
3501

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