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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.333 by root, Thu Nov 27 12:39:00 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
… …
241/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
242struct coro { 261struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 263 coro_cctx *cctx;
245 264
246 /* process 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
271typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
273 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
275 301
276/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
277 303
278#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
284 310
285/* for Coro.pm */ 311/* for Coro.pm */
286static SV *coro_current; 312static SV *coro_current;
287static SV *coro_readyhook; 313static SV *coro_readyhook;
288static 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;
289static struct coro *coro_first; 316static struct coro *coro_first;
290#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
291 318
292/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
293 320
… …
319 get_hv (name, create); 346 get_hv (name, create);
320#endif 347#endif
321 return get_hv (name, create); 348 return get_hv (name, create);
322} 349}
323 350
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
324static AV * 412static AV *
325coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
326{ 414{
327 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
329 417
330 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 424#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 426 --AvFILLp (padlist);
339 427
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
342 430
343 return newpadlist; 431 return newpadlist;
344} 432}
345 433
346static void 434static void
347free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
348{ 436{
349 /* may be during global destruction */ 437 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
351 { 439 {
352 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
353 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
354 { 443 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
356 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 446 I32 j = AvFILLp (av);
358 SV *sv; 447
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 453 }
365 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
367 } 459 }
368} 460}
369 461
370static int 462static int
… …
379 471
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 473
382 return 0; 474 return 0;
383} 475}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 476
388static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 478 0, 0, 0, 0,
390 coro_cv_free 479 coro_cv_free
391}; 480};
392
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 481
442/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
443static void 483static void
444get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
445{ 485{
… …
451 else 491 else
452 { 492 {
453#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
460#else 500#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 502#endif
463 } 503 }
464} 504}
465 505
466static void 506static void
… …
473 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);
474 514
475 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
476 516
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
479 519
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 521}
482 522
483/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
488 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
489 c->slot = 0; 529 c->slot = 0;
490 530
491 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
492 532
493 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
497 538
498 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
499 # include "state.h" 540 # include "state.h"
500 #undef VAR 541 #undef VAR
501 542
… …
513 } 554 }
514 555
515 PUTBACK; 556 PUTBACK;
516 } 557 }
517 558
518 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
519} 561}
520 562
521static void 563static void
522save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
523{ 565{
566 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
525 568
526 { 569 {
527 dSP; 570 dSP;
528 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
585 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
586 629
587 { 630 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 632
590 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
592 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
594 638
595 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 640 # include "state.h"
597 #undef VAR 641 #undef VAR
598 } 642 }
… …
603 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
606 */ 650 */
607#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
609#else 653#else
610static void 654static void
611coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
612{ 656{
613 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 721 Safefree (PL_retstack);
678#endif 722#endif
679} 723}
680 724
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
681static size_t 734static size_t
682coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
683{ 736{
684 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
685 738
686 if (coro->mainstack) 739 if (coro->mainstack)
687 { 740 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
692 { 742 {
693 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
694 744 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 745 #undef SYM
698 } 746 }
699 else 747 else
700 slot = coro->slot;
701
702 if (slot)
703 { 748 {
704 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 752 }
716 } 753 }
717 754
718 return rss; 755 return rss;
719} 756}
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 858slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 859{
823 return 0; 860 return 0;
824} 861}
825 862
826static void 863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
828{ 873{
829 /* 874 /*
830 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
831 */ 876 */
… …
833 878
834 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 886 PL_curpm = 0;
839 PL_curpad = 0; 887 PL_curpad = 0;
840 PL_localizing = 0; 888 PL_localizing = 0;
841 PL_dirty = 0; 889 PL_dirty = 0;
842 PL_restartop = 0; 890 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 892 PL_parser = 0;
845#endif 893#endif
894 PL_hints = 0;
846 895
847 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
848 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 );
849 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);
850 899
851 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
854 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;
855 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 907
858 { 908 {
859 dSP; 909 dSP;
860 UNOP myop; 910 UNOP myop;
861 911
862 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
865 916
866 PUSHMARK (SP); 917 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 919 PUTBACK;
869 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 922 }
873 923
874 /* 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
875 * 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.
876 */ 926 */
877 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 */
878 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 */
929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
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 */
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;
879} 940}
880 941
881static void 942static void
882coro_destruct (pTHX_ struct coro *coro) 943coro_destruct (pTHX_ struct coro *coro)
883{ 944{
… …
902 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
903 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
904 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
905 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
907 969
908 SvREFCNT_dec (PL_diehook); 970 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 971 SvREFCNT_dec (PL_warnhook);
910 972
911 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
913 977
914 coro_destruct_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
915} 979}
916 980
917INLINE void 981INLINE void
… …
927static int 991static int
928runops_trace (pTHX) 992runops_trace (pTHX)
929{ 993{
930 COP *oldcop = 0; 994 COP *oldcop = 0;
931 int oldcxix = -2; 995 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 996
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 998 {
937 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
938 1000
939 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1002 {
941 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)
942 { 1004 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1006 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
946 SV **cb; 1008 SV **cb;
… …
983 1045
984 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
985 { 1047 {
986 SV **cb; 1048 SV **cb;
987 1049
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1051 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1053
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1055 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1056 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
998 1059
999 if (isGV (gv)) 1060 if (isGV (gv))
… …
1004 SAVETMPS; 1065 SAVETMPS;
1005 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1067 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1069 PUSHs (fullname);
1009 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);
1010 PUTBACK; 1071 PUTBACK;
1011 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);
1012 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);
1013 SPAGAIN; 1074 SPAGAIN;
1014 FREETMPS; 1075 FREETMPS;
… …
1017 } 1078 }
1018 1079
1019 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
1020 } 1081 }
1021 1082
1022 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1084 {
1024 dSP; 1085 dSP;
1025 1086
1026 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1088 ENTER;
… …
1046 1107
1047 TAINT_NOT; 1108 TAINT_NOT;
1048 return 0; 1109 return 0;
1049} 1110}
1050 1111
1112static struct CoroSLF cctx_ssl_frame;
1113
1051static void 1114static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1116{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1117 ta->prev = 0;
1056} 1118}
1057 1119
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1120static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1122{
1061/* 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 */
1062static void NOINLINE 1129static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
1064{ 1131{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
1069 1133
1070 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
1072 1136
1073 Zero (&myop, 1, UNOP); 1137 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
1075 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));
1076 1141
1077 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1144
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1147}
1086 1148
1087/* 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 */
1088INLINE void 1150INLINE void
1089transfer_tail (pTHX) 1151transfer_tail (pTHX)
… …
1108 /* normally we would need to skip the entersub here */ 1170 /* normally we would need to skip the entersub here */
1109 /* 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 */
1110 /* PL_nop = PL_nop->op_next */ 1172 /* PL_nop = PL_nop->op_next */
1111 1173
1112 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
1114 1176
1115 /* cctx_run is the alternative tail of transfer() */ 1177 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1178 transfer_tail (aTHX);
1117 1179
1118 /* 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 */
1119 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
1120 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 */
1121 1187
1122 /* 1188 /*
1123 * 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
1124 * 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)
1125 * 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
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * 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.
1128 */ 1196 */
1129 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
1130 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 */
1131 } 1199 }
1132} 1200}
… …
1209cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
1210{ 1278{
1211 if (!cctx) 1279 if (!cctx)
1212 return; 1280 return;
1213 1281
1282 assert (cctx != cctx_current);//D temporary
1283
1214 --cctx_count; 1284 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1285 coro_destroy (&cctx->cctx);
1216 1286
1217 /* coro_transfer creates new, empty cctx's */ 1287 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1288 if (cctx->sptr)
… …
1276/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
1277 1347
1278static void 1348static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1350{
1351 /* TODO: throwing up here is considered harmful */
1352
1281 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
1282 { 1354 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 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,");
1285 1357
1286 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
1287 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,");
1288 1360
1289 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
… …
1295#endif 1367#endif
1296 } 1368 }
1297} 1369}
1298 1370
1299/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
1300static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1374{
1303 dSTACKLEVEL; 1375 dSTACKLEVEL;
1304 1376
1305 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1378 if (expect_false (!prev))
1307 { 1379 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1380 cctx_current->idle_sp = STACKLEVEL;
1309 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 */
1310 } 1382 }
1311 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1312 { 1384 {
1313 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1314 1386
1315 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1316 { 1388 {
1317 /* create a new empty/source context */ 1389 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1321 } 1392 }
1322 1393
1323 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
… …
1334 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1335 } 1406 }
1336 else 1407 else
1337 load_perl (aTHX_ next); 1408 load_perl (aTHX_ next);
1338 1409
1339 prev__cctx = prev->cctx; 1410 assert (!prev->cctx);//D temporary
1340 1411
1341 /* possibly untie and reuse the cctx */ 1412 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1413 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1414 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1415 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1416 && !force_cctx
1346 )) 1417 ))
1347 { 1418 {
1348 /* 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 */
1349 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));
1350 1421
1351 prev->cctx = 0;
1352
1353 /* 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. */
1354 /* 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 */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1425 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1426 next->cctx = cctx_get (aTHX);
1358 1427
1359 cctx_put (prev__cctx); 1428 cctx_put (cctx_current);
1360 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1361 1432
1362 ++next->usecount; 1433 ++next->usecount;
1363 1434
1364 if (expect_true (!next->cctx)) 1435 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1437
1367 if (expect_false (prev__cctx != next->cctx)) 1438 next->cctx = 0;
1439
1440 if (expect_false (cctx_prev != cctx_current))
1368 { 1441 {
1369 prev__cctx->top_env = PL_top_env; 1442 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1443 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1445 }
1373 1446
1374 transfer_tail (aTHX); 1447 transfer_tail (aTHX);
1375 } 1448 }
1376} 1449}
… …
1415 1488
1416 coro->slot = 0; 1489 coro->slot = 0;
1417 } 1490 }
1418 1491
1419 cctx_destroy (coro->cctx); 1492 cctx_destroy (coro->cctx);
1493 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1494 SvREFCNT_dec (coro->args);
1495 SvREFCNT_dec (CORO_THROW);
1421 1496
1422 if (coro->next) coro->next->prev = coro->prev; 1497 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1498 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1499 if (coro == coro_first) coro_first = coro->next;
1425 1500
… …
1479 1554
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1555 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1556 TRANSFER (ta, 1);
1482} 1557}
1483 1558
1559/*****************************************************************************/
1560/* gensub: simple closure generation utility */
1561
1562#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1563
1564/* create a closure from XS, returns a code reference */
1565/* the arg can be accessed via GENSUB_ARG from the callback */
1566/* the callback must use dXSARGS/XSRETURN */
1567static SV *
1568gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1569{
1570 CV *cv = (CV *)newSV (0);
1571
1572 sv_upgrade ((SV *)cv, SVt_PVCV);
1573
1574 CvANON_on (cv);
1575 CvISXSUB_on (cv);
1576 CvXSUB (cv) = xsub;
1577 GENSUB_ARG = arg;
1578
1579 return newRV_noinc ((SV *)cv);
1580}
1581
1484/** Coro ********************************************************************/ 1582/** Coro ********************************************************************/
1485 1583
1486INLINE void 1584INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1585coro_enq (pTHX_ struct coro *coro)
1488{ 1586{
… …
1506{ 1604{
1507 struct coro *coro; 1605 struct coro *coro;
1508 SV *sv_hook; 1606 SV *sv_hook;
1509 void (*xs_hook)(void); 1607 void (*xs_hook)(void);
1510 1608
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1609 coro = SvSTATE (coro_sv);
1515 1610
1516 if (coro->flags & CF_READY) 1611 if (coro->flags & CF_READY)
1517 return 0; 1612 return 0;
1518 1613
… …
1531 ENTER; 1626 ENTER;
1532 SAVETMPS; 1627 SAVETMPS;
1533 1628
1534 PUSHMARK (SP); 1629 PUSHMARK (SP);
1535 PUTBACK; 1630 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1631 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1632
1539 FREETMPS; 1633 FREETMPS;
1540 LEAVE; 1634 LEAVE;
1541 } 1635 }
1542 1636
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1644api_is_ready (pTHX_ SV *coro_sv)
1551{ 1645{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1646 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1647}
1554 1648
1649/* expects to own a reference to next->hv */
1555INLINE void 1650INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1651prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1652{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1653 SV *prev_sv = SvRV (coro_current);
1654
1598 ta->prev = SvSTATE_hv (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1656 ta->next = next;
1657
1599 TRANSFER_CHECK (*ta); 1658 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1659
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, (SV *)next->hv);
1603 1661
1604 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1606} 1664}
1607 1665
1666static void
1667prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1668{
1669 for (;;)
1670 {
1671 SV *next_sv = coro_deq (aTHX);
1672
1673 if (expect_true (next_sv))
1674 {
1675 struct coro *next = SvSTATE_hv (next_sv);
1676
1677 /* cannot transfer to destroyed coros, skip and look for next */
1678 if (expect_false (next->flags & CF_DESTROYED))
1679 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1680 else
1681 {
1682 next->flags &= ~CF_READY;
1683 --coro_nready;
1684
1685 prepare_schedule_to (aTHX_ ta, next);
1686 break;
1687 }
1688 }
1689 else
1690 {
1691 /* nothing to schedule: call the idle handler */
1692 if (SvROK (sv_idle)
1693 && SvOBJECT (SvRV (sv_idle)))
1694 {
1695 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1696 api_ready (aTHX_ SvRV (sv_idle));
1697 --coro_nready;
1698 }
1699 else
1700 {
1701 dSP;
1702
1703 ENTER;
1704 SAVETMPS;
1705
1706 PUSHMARK (SP);
1707 PUTBACK;
1708 call_sv (sv_idle, G_VOID | G_DISCARD);
1709
1710 FREETMPS;
1711 LEAVE;
1712 }
1713 }
1714 }
1715}
1716
1608INLINE void 1717INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1718prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1719{
1611 api_ready (aTHX_ coro_current); 1720 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1721 prepare_schedule (aTHX_ ta);
… …
1631{ 1740{
1632 struct coro_transfer_args ta; 1741 struct coro_transfer_args ta;
1633 1742
1634 prepare_schedule (aTHX_ &ta); 1743 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1744 TRANSFER (ta, 1);
1745}
1746
1747static void
1748api_schedule_to (pTHX_ SV *coro_sv)
1749{
1750 struct coro_transfer_args ta;
1751 struct coro *next = SvSTATE (coro_sv);
1752
1753 SvREFCNT_inc_NN (coro_sv);
1754 prepare_schedule_to (aTHX_ &ta, next);
1636} 1755}
1637 1756
1638static int 1757static int
1639api_cede (pTHX) 1758api_cede (pTHX)
1640{ 1759{
… …
1669static void 1788static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1789api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1790{
1672 struct coro *coro = SvSTATE (coro_sv); 1791 struct coro *coro = SvSTATE (coro_sv);
1673 1792
1793 if (coro->flags & CF_RUNNING)
1794 croak ("cannot enable tracing on a running coroutine, caught");
1795
1674 if (flags & CC_TRACE) 1796 if (flags & CC_TRACE)
1675 { 1797 {
1676 if (!coro->cctx) 1798 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1799 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1800 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1801 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1802
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1803 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1804 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1805 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1806 {
… …
1687 if (coro->flags & CF_RUNNING) 1809 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1810 PL_runops = RUNOPS_DEFAULT;
1689 else 1811 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1812 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1813 }
1814}
1815
1816static void
1817coro_call_on_destroy (pTHX_ struct coro *coro)
1818{
1819 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1820 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1821
1822 if (on_destroyp)
1823 {
1824 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1825
1826 while (AvFILLp (on_destroy) >= 0)
1827 {
1828 dSP; /* don't disturb outer sp */
1829 SV *cb = av_pop (on_destroy);
1830
1831 PUSHMARK (SP);
1832
1833 if (statusp)
1834 {
1835 int i;
1836 AV *status = (AV *)SvRV (*statusp);
1837 EXTEND (SP, AvFILLp (status) + 1);
1838
1839 for (i = 0; i <= AvFILLp (status); ++i)
1840 PUSHs (AvARRAY (status)[i]);
1841 }
1842
1843 PUTBACK;
1844 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1845 }
1846 }
1847}
1848
1849static void
1850slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1851{
1852 int i;
1853 HV *hv = (HV *)SvRV (coro_current);
1854 AV *av = newAV ();
1855
1856 av_extend (av, items - 1);
1857 for (i = 0; i < items; ++i)
1858 av_push (av, SvREFCNT_inc_NN (arg [i]));
1859
1860 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1861
1862 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1863 api_ready (aTHX_ sv_manager);
1864
1865 frame->prepare = prepare_schedule;
1866 frame->check = slf_check_repeat;
1867}
1868
1869/*****************************************************************************/
1870/* async pool handler */
1871
1872static int
1873slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = (struct coro *)frame->data;
1877
1878 if (!coro->invoke_cb)
1879 return 1; /* loop till we have invoke */
1880 else
1881 {
1882 hv_store (hv, "desc", sizeof ("desc") - 1,
1883 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1884
1885 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1886
1887 {
1888 dSP;
1889 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1890 PUTBACK;
1891 }
1892
1893 SvREFCNT_dec (GvAV (PL_defgv));
1894 GvAV (PL_defgv) = coro->invoke_av;
1895 coro->invoke_av = 0;
1896
1897 return 0;
1898 }
1899}
1900
1901static void
1902slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1903{
1904 HV *hv = (HV *)SvRV (coro_current);
1905 struct coro *coro = SvSTATE_hv ((SV *)hv);
1906
1907 if (expect_true (coro->saved_deffh))
1908 {
1909 /* subsequent iteration */
1910 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1911 coro->saved_deffh = 0;
1912
1913 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1914 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1915 {
1916 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1917 coro->invoke_av = newAV ();
1918
1919 frame->prepare = prepare_nop;
1920 }
1921 else
1922 {
1923 av_clear (GvAV (PL_defgv));
1924 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1925
1926 coro->prio = 0;
1927
1928 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1929 api_trace (aTHX_ coro_current, 0);
1930
1931 frame->prepare = prepare_schedule;
1932 av_push (av_async_pool, SvREFCNT_inc (hv));
1933 }
1934 }
1935 else
1936 {
1937 /* first iteration, simply fall through */
1938 frame->prepare = prepare_nop;
1939 }
1940
1941 frame->check = slf_check_pool_handler;
1942 frame->data = (void *)coro;
1943}
1944
1945/*****************************************************************************/
1946/* rouse callback */
1947
1948#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1949
1950static void
1951coro_rouse_callback (pTHX_ CV *cv)
1952{
1953 dXSARGS;
1954 SV *data = (SV *)GENSUB_ARG;
1955
1956 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1957 {
1958 /* first call, set args */
1959 AV *av = newAV ();
1960 SV *coro = SvRV (data);
1961
1962 SvRV_set (data, (SV *)av);
1963 api_ready (aTHX_ coro);
1964 SvREFCNT_dec (coro);
1965
1966 /* better take a full copy of the arguments */
1967 while (items--)
1968 av_store (av, items, newSVsv (ST (items)));
1969 }
1970
1971 XSRETURN_EMPTY;
1972}
1973
1974static int
1975slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1976{
1977 SV *data = (SV *)frame->data;
1978
1979 if (CORO_THROW)
1980 return 0;
1981
1982 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1983 return 1;
1984
1985 /* now push all results on the stack */
1986 {
1987 dSP;
1988 AV *av = (AV *)SvRV (data);
1989 int i;
1990
1991 EXTEND (SP, AvFILLp (av) + 1);
1992 for (i = 0; i <= AvFILLp (av); ++i)
1993 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1994
1995 /* we have stolen the elements, so ste length to zero and free */
1996 AvFILLp (av) = -1;
1997 av_undef (av);
1998
1999 PUTBACK;
2000 }
2001
2002 return 0;
2003}
2004
2005static void
2006slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 SV *cb;
2009
2010 if (items)
2011 cb = arg [0];
2012 else
2013 {
2014 struct coro *coro = SvSTATE_current;
2015
2016 if (!coro->rouse_cb)
2017 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2018
2019 cb = sv_2mortal (coro->rouse_cb);
2020 coro->rouse_cb = 0;
2021 }
2022
2023 if (!SvROK (cb)
2024 || SvTYPE (SvRV (cb)) != SVt_PVCV
2025 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2026 croak ("Coro::rouse_wait called with illegal callback argument,");
2027
2028 {
2029 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2030 SV *data = (SV *)GENSUB_ARG;
2031
2032 frame->data = (void *)data;
2033 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2034 frame->check = slf_check_rouse_wait;
2035 }
2036}
2037
2038static SV *
2039coro_new_rouse_cb (pTHX)
2040{
2041 HV *hv = (HV *)SvRV (coro_current);
2042 struct coro *coro = SvSTATE_hv (hv);
2043 SV *data = newRV_inc ((SV *)hv);
2044 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2045
2046 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2047 SvREFCNT_dec (data); /* magicext increases the refcount */
2048
2049 SvREFCNT_dec (coro->rouse_cb);
2050 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2051
2052 return cb;
2053}
2054
2055/*****************************************************************************/
2056/* schedule-like-function opcode (SLF) */
2057
2058static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2059static const CV *slf_cv;
2060static SV **slf_argv;
2061static int slf_argc, slf_arga; /* count, allocated */
2062static I32 slf_ax; /* top of stack, for restore */
2063
2064/* this restores the stack in the case we patched the entersub, to */
2065/* recreate the stack frame as perl will on following calls */
2066/* since entersub cleared the stack */
2067static OP *
2068pp_restore (pTHX)
2069{
2070 int i;
2071 SV **SP = PL_stack_base + slf_ax;
2072
2073 PUSHMARK (SP);
2074
2075 EXTEND (SP, slf_argc + 1);
2076
2077 for (i = 0; i < slf_argc; ++i)
2078 PUSHs (sv_2mortal (slf_argv [i]));
2079
2080 PUSHs ((SV *)CvGV (slf_cv));
2081
2082 RETURNOP (slf_restore.op_first);
2083}
2084
2085static void
2086slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2087{
2088 SV **arg = (SV **)slf_frame.data;
2089
2090 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2091}
2092
2093static void
2094slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{
2096 if (items != 2)
2097 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2098
2099 frame->prepare = slf_prepare_transfer;
2100 frame->check = slf_check_nop;
2101 frame->data = (void *)arg; /* let's hope it will stay valid */
2102}
2103
2104static void
2105slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 frame->prepare = prepare_schedule;
2108 frame->check = slf_check_nop;
2109}
2110
2111static void
2112slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2113{
2114 struct coro *next = (struct coro *)slf_frame.data;
2115
2116 SvREFCNT_inc_NN (next->hv);
2117 prepare_schedule_to (aTHX_ ta, next);
2118}
2119
2120static void
2121slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2122{
2123 if (!items)
2124 croak ("Coro::schedule_to expects a coroutine argument, caught");
2125
2126 frame->data = (void *)SvSTATE (arg [0]);
2127 frame->prepare = slf_prepare_schedule_to;
2128 frame->check = slf_check_nop;
2129}
2130
2131static void
2132slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 api_ready (aTHX_ SvRV (coro_current));
2135
2136 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2137}
2138
2139static void
2140slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2148{
2149 frame->prepare = prepare_cede_notself;
2150 frame->check = slf_check_nop;
2151}
2152
2153/*
2154 * these not obviously related functions are all rolled into one
2155 * function to increase chances that they all will call transfer with the same
2156 * stack offset
2157 * SLF stands for "schedule-like-function".
2158 */
2159static OP *
2160pp_slf (pTHX)
2161{
2162 I32 checkmark; /* mark SP to see how many elements check has pushed */
2163
2164 /* set up the slf frame, unless it has already been set-up */
2165 /* the latter happens when a new coro has been started */
2166 /* or when a new cctx was attached to an existing coroutine */
2167 if (expect_true (!slf_frame.prepare))
2168 {
2169 /* first iteration */
2170 dSP;
2171 SV **arg = PL_stack_base + TOPMARK + 1;
2172 int items = SP - arg; /* args without function object */
2173 SV *gv = *sp;
2174
2175 /* do a quick consistency check on the "function" object, and if it isn't */
2176 /* for us, divert to the real entersub */
2177 if (SvTYPE (gv) != SVt_PVGV
2178 || !GvCV (gv)
2179 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2180 return PL_ppaddr[OP_ENTERSUB](aTHX);
2181
2182 if (!(PL_op->op_flags & OPf_STACKED))
2183 {
2184 /* ampersand-form of call, use @_ instead of stack */
2185 AV *av = GvAV (PL_defgv);
2186 arg = AvARRAY (av);
2187 items = AvFILLp (av) + 1;
2188 }
2189
2190 /* now call the init function, which needs to set up slf_frame */
2191 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2192 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2193
2194 /* pop args */
2195 SP = PL_stack_base + POPMARK;
2196
2197 PUTBACK;
2198 }
2199
2200 /* now that we have a slf_frame, interpret it! */
2201 /* we use a callback system not to make the code needlessly */
2202 /* complicated, but so we can run multiple perl coros from one cctx */
2203
2204 do
2205 {
2206 struct coro_transfer_args ta;
2207
2208 slf_frame.prepare (aTHX_ &ta);
2209 TRANSFER (ta, 0);
2210
2211 checkmark = PL_stack_sp - PL_stack_base;
2212 }
2213 while (slf_frame.check (aTHX_ &slf_frame));
2214
2215 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2216
2217 /* exception handling */
2218 if (expect_false (CORO_THROW))
2219 {
2220 SV *exception = sv_2mortal (CORO_THROW);
2221
2222 CORO_THROW = 0;
2223 sv_setsv (ERRSV, exception);
2224 croak (0);
2225 }
2226
2227 /* return value handling - mostly like entersub */
2228 /* make sure we put something on the stack in scalar context */
2229 if (GIMME_V == G_SCALAR)
2230 {
2231 dSP;
2232 SV **bot = PL_stack_base + checkmark;
2233
2234 if (sp == bot) /* too few, push undef */
2235 bot [1] = &PL_sv_undef;
2236 else if (sp != bot + 1) /* too many, take last one */
2237 bot [1] = *sp;
2238
2239 SP = bot + 1;
2240
2241 PUTBACK;
2242 }
2243
2244 return NORMAL;
2245}
2246
2247static void
2248api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2249{
2250 int i;
2251 SV **arg = PL_stack_base + ax;
2252 int items = PL_stack_sp - arg + 1;
2253
2254 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2255
2256 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2257 && PL_op->op_ppaddr != pp_slf)
2258 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2259
2260 CvFLAGS (cv) |= CVf_SLF;
2261 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2262 slf_cv = cv;
2263
2264 /* we patch the op, and then re-run the whole call */
2265 /* we have to put the same argument on the stack for this to work */
2266 /* and this will be done by pp_restore */
2267 slf_restore.op_next = (OP *)&slf_restore;
2268 slf_restore.op_type = OP_CUSTOM;
2269 slf_restore.op_ppaddr = pp_restore;
2270 slf_restore.op_first = PL_op;
2271
2272 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2273
2274 if (PL_op->op_flags & OPf_STACKED)
2275 {
2276 if (items > slf_arga)
2277 {
2278 slf_arga = items;
2279 free (slf_argv);
2280 slf_argv = malloc (slf_arga * sizeof (SV *));
2281 }
2282
2283 slf_argc = items;
2284
2285 for (i = 0; i < items; ++i)
2286 slf_argv [i] = SvREFCNT_inc (arg [i]);
2287 }
2288 else
2289 slf_argc = 0;
2290
2291 PL_op->op_ppaddr = pp_slf;
2292 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2293
2294 PL_op = (OP *)&slf_restore;
1692} 2295}
1693 2296
1694/*****************************************************************************/ 2297/*****************************************************************************/
1695/* PerlIO::cede */ 2298/* PerlIO::cede */
1696 2299
… …
1765 PerlIOBuf_get_cnt, 2368 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2369 PerlIOBuf_set_ptrcnt,
1767}; 2370};
1768 2371
1769/*****************************************************************************/ 2372/*****************************************************************************/
2373/* Coro::Semaphore & Coro::Signal */
1770 2374
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2375static SV *
1782pp_restore (pTHX) 2376coro_waitarray_new (pTHX_ int count)
1783{ 2377{
1784 SV **SP = PL_stack_base + slf_ax; 2378 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2379 AV *av = newAV ();
2380 SV **ary;
1785 2381
1786 PUSHMARK (SP); 2382 /* unfortunately, building manually saves memory */
1787 2383 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2384 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2385#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2386 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2387#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2388 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2389 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2390 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
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 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 2391#endif
2392 AvMAX (av) = 1;
2393 AvFILLp (av) = 0;
2394 ary [0] = newSViv (count);
1978 2395
1979 CvFLAGS (cv) |= CVf_SLF; 2396 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 2397}
2001 2398
2002/*****************************************************************************/ 2399/* semaphore */
2003 2400
2004static void 2401static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2402coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2403{
2007 SV *count_sv = AvARRAY (av)[0]; 2404 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2417 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2418 cb = av_shift (av);
2022 2419
2023 if (SvOBJECT (cb)) 2420 if (SvOBJECT (cb))
2421 {
2024 api_ready (aTHX_ cb); 2422 api_ready (aTHX_ cb);
2025 else 2423 --count;
2026 croak ("callbacks not yet supported"); 2424 }
2425 else if (SvTYPE (cb) == SVt_PVCV)
2426 {
2427 dSP;
2428 PUSHMARK (SP);
2429 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2430 PUTBACK;
2431 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2432 }
2027 2433
2028 SvREFCNT_dec (cb); 2434 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2435 }
2032} 2436}
2033 2437
2034static void 2438static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2439coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2441 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2442 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2443}
2040 2444
2041static int 2445static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2446slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2447{
2044 AV *av = (AV *)frame->data; 2448 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2449 SV *count_sv = AvARRAY (av)[0];
2046 2450
2451 /* if we are about to throw, don't actually acquire the lock, just throw */
2452 if (CORO_THROW)
2453 return 0;
2047 if (SvIVX (count_sv) > 0) 2454 else if (SvIVX (count_sv) > 0)
2048 { 2455 {
2049 SvSTATE_current->on_destroy = 0; 2456 SvSTATE_current->on_destroy = 0;
2457
2458 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2459 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2460 else
2461 coro_semaphore_adjust (aTHX_ av, 0);
2462
2051 return 0; 2463 return 0;
2052 } 2464 }
2053 else 2465 else
2054 { 2466 {
2055 int i; 2467 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2476 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2477 return 1;
2066 } 2478 }
2067} 2479}
2068 2480
2069static void 2481static int
2482slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2483{
2484 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2485}
2486
2487static int
2488slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2489{
2490 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2491}
2492
2493static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2494slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2495{
2072 AV *av = (AV *)SvRV (arg [0]); 2496 AV *av = (AV *)SvRV (arg [0]);
2073 2497
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2498 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2499 {
2076 frame->data = (void *)av; 2500 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2501 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2502 }
2080 else 2503 else
2081 { 2504 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2505 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2506
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2507 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2508 frame->prepare = prepare_schedule;
2086 2509
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2510 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2511 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2512 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2513 }
2514}
2092 2515
2516static void
2517slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2520 frame->check = slf_check_semaphore_down;
2521}
2094 2522
2523static void
2524slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2525{
2526 if (items >= 2)
2527 {
2528 /* callback form */
2529 AV *av = (AV *)SvRV (arg [0]);
2530 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2531
2532 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2533
2534 if (SvIVX (AvARRAY (av)[0]) > 0)
2535 coro_semaphore_adjust (aTHX_ av, 0);
2536
2537 frame->prepare = prepare_nop;
2538 frame->check = slf_check_nop;
2539 }
2540 else
2541 {
2542 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2543 frame->check = slf_check_semaphore_wait;
2544 }
2545}
2546
2547/* signal */
2548
2549static void
2550coro_signal_wake (pTHX_ AV *av, int count)
2551{
2552 SvIVX (AvARRAY (av)[0]) = 0;
2553
2554 /* now signal count waiters */
2555 while (count > 0 && AvFILLp (av) > 0)
2556 {
2557 SV *cb;
2558
2559 /* swap first two elements so we can shift a waiter */
2560 cb = AvARRAY (av)[0];
2561 AvARRAY (av)[0] = AvARRAY (av)[1];
2562 AvARRAY (av)[1] = cb;
2563
2564 cb = av_shift (av);
2565
2566 api_ready (aTHX_ cb);
2567 sv_setiv (cb, 0); /* signal waiter */
2568 SvREFCNT_dec (cb);
2569
2570 --count;
2571 }
2572}
2573
2574static int
2575slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2576{
2577 /* if we are about to throw, also stop waiting */
2578 return SvROK ((SV *)frame->data) && !CORO_THROW;
2579}
2580
2581static void
2582slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2583{
2584 AV *av = (AV *)SvRV (arg [0]);
2585
2586 if (SvIVX (AvARRAY (av)[0]))
2587 {
2588 SvIVX (AvARRAY (av)[0]) = 0;
2589 frame->prepare = prepare_nop;
2590 frame->check = slf_check_nop;
2591 }
2592 else
2593 {
2594 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2595
2596 av_push (av, waiter);
2597
2598 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2599 frame->prepare = prepare_schedule;
2600 frame->check = slf_check_signal_wait;
2601 }
2095} 2602}
2096 2603
2097/*****************************************************************************/ 2604/*****************************************************************************/
2605/* Coro::AIO */
2098 2606
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2607#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2608
2101/* create a closure from XS, returns a code reference */ 2609/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2610struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2611{
2107 CV *cv = (CV *)NEWSV (0, 0); 2612 int errorno;
2613 I32 laststype; /* U16 in 5.10.0 */
2614 int laststatval;
2615 Stat_t statcache;
2616};
2108 2617
2618static void
2619coro_aio_callback (pTHX_ CV *cv)
2620{
2621 dXSARGS;
2622 AV *state = (AV *)GENSUB_ARG;
2623 SV *coro = av_pop (state);
2624 SV *data_sv = newSV (sizeof (struct io_state));
2625
2626 av_extend (state, items - 1);
2627
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2628 sv_upgrade (data_sv, SVt_PV);
2629 SvCUR_set (data_sv, sizeof (struct io_state));
2630 SvPOK_only (data_sv);
2110 2631
2111 CvANON_on (cv); 2632 {
2112 CvISXSUB_on (cv); 2633 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2634
2116 return newRV_noinc ((SV *)cv); 2635 data->errorno = errno;
2636 data->laststype = PL_laststype;
2637 data->laststatval = PL_laststatval;
2638 data->statcache = PL_statcache;
2639 }
2640
2641 /* now build the result vector out of all the parameters and the data_sv */
2642 {
2643 int i;
2644
2645 for (i = 0; i < items; ++i)
2646 av_push (state, SvREFCNT_inc_NN (ST (i)));
2647 }
2648
2649 av_push (state, data_sv);
2650
2651 api_ready (aTHX_ coro);
2652 SvREFCNT_dec (coro);
2653 SvREFCNT_dec ((AV *)state);
2654}
2655
2656static int
2657slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2658{
2659 AV *state = (AV *)frame->data;
2660
2661 /* if we are about to throw, return early */
2662 /* this does not cancel the aio request, but at least */
2663 /* it quickly returns */
2664 if (CORO_THROW)
2665 return 0;
2666
2667 /* one element that is an RV? repeat! */
2668 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2669 return 1;
2670
2671 /* restore status */
2672 {
2673 SV *data_sv = av_pop (state);
2674 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2675
2676 errno = data->errorno;
2677 PL_laststype = data->laststype;
2678 PL_laststatval = data->laststatval;
2679 PL_statcache = data->statcache;
2680
2681 SvREFCNT_dec (data_sv);
2682 }
2683
2684 /* push result values */
2685 {
2686 dSP;
2687 int i;
2688
2689 EXTEND (SP, AvFILLp (state) + 1);
2690 for (i = 0; i <= AvFILLp (state); ++i)
2691 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2692
2693 PUTBACK;
2694 }
2695
2696 return 0;
2697}
2698
2699static void
2700slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2701{
2702 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2703 SV *coro_hv = SvRV (coro_current);
2704 struct coro *coro = SvSTATE_hv (coro_hv);
2705
2706 /* put our coroutine id on the state arg */
2707 av_push (state, SvREFCNT_inc_NN (coro_hv));
2708
2709 /* first see whether we have a non-zero priority and set it as AIO prio */
2710 if (coro->prio)
2711 {
2712 dSP;
2713
2714 static SV *prio_cv;
2715 static SV *prio_sv;
2716
2717 if (expect_false (!prio_cv))
2718 {
2719 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2720 prio_sv = newSViv (0);
2721 }
2722
2723 PUSHMARK (SP);
2724 sv_setiv (prio_sv, coro->prio);
2725 XPUSHs (prio_sv);
2726
2727 PUTBACK;
2728 call_sv (prio_cv, G_VOID | G_DISCARD);
2729 }
2730
2731 /* now call the original request */
2732 {
2733 dSP;
2734 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2735 int i;
2736
2737 PUSHMARK (SP);
2738
2739 /* first push all args to the stack */
2740 EXTEND (SP, items + 1);
2741
2742 for (i = 0; i < items; ++i)
2743 PUSHs (arg [i]);
2744
2745 /* now push the callback closure */
2746 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2747
2748 /* now call the AIO function - we assume our request is uncancelable */
2749 PUTBACK;
2750 call_sv ((SV *)req, G_VOID | G_DISCARD);
2751 }
2752
2753 /* now that the requets is going, we loop toll we have a result */
2754 frame->data = (void *)state;
2755 frame->prepare = prepare_schedule;
2756 frame->check = slf_check_aio_req;
2757}
2758
2759static void
2760coro_aio_req_xs (pTHX_ CV *cv)
2761{
2762 dXSARGS;
2763
2764 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2765
2766 XSRETURN_EMPTY;
2117} 2767}
2118 2768
2119/*****************************************************************************/ 2769/*****************************************************************************/
2770
2771#if CORO_CLONE
2772# include "clone.c"
2773#endif
2120 2774
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2775MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 2776
2123PROTOTYPES: DISABLE 2777PROTOTYPES: DISABLE
2124 2778
… …
2129 coro_thx = PERL_GET_CONTEXT; 2783 coro_thx = PERL_GET_CONTEXT;
2130# endif 2784# endif
2131#endif 2785#endif
2132 BOOT_PAGESIZE; 2786 BOOT_PAGESIZE;
2133 2787
2788 cctx_current = cctx_new_empty ();
2789
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2790 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2791 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 2792
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2793 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2794 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 2813
2158 { 2814 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2815 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 2816
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2817 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 2818 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 2819
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2820 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 2821 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 2822 }
2169 2823
2170 coroapi.ver = CORO_API_VERSION; 2824 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 2825 coroapi.rev = CORO_API_REVISION;
2172 2826
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2845 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2846}
2193 2847
2194SV * 2848SV *
2195new (char *klass, ...) 2849new (char *klass, ...)
2850 ALIAS:
2851 Coro::new = 1
2196 CODE: 2852 CODE:
2197{ 2853{
2198 struct coro *coro; 2854 struct coro *coro;
2199 MAGIC *mg; 2855 MAGIC *mg;
2200 HV *hv; 2856 HV *hv;
2857 CV *cb;
2201 int i; 2858 int i;
2859
2860 if (items > 1)
2861 {
2862 cb = coro_sv_2cv (aTHX_ ST (1));
2863
2864 if (!ix)
2865 {
2866 if (CvISXSUB (cb))
2867 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2868
2869 if (!CvROOT (cb))
2870 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2871 }
2872 }
2202 2873
2203 Newz (0, coro, 1, struct coro); 2874 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2875 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2876 coro->flags = CF_NEW;
2206 2877
… …
2211 coro->hv = hv = newHV (); 2882 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2883 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP; 2884 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2885 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2886
2887 if (items > 1)
2888 {
2216 av_extend (coro->args, items - 1); 2889 av_extend (coro->args, items - 1 + ix - 1);
2890
2891 if (ix)
2892 {
2893 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2894 cb = cv_coro_run;
2895 }
2896
2897 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2898
2217 for (i = 1; i < items; i++) 2899 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2900 av_push (coro->args, newSVsv (ST (i)));
2901 }
2219} 2902}
2220 OUTPUT: 2903 OUTPUT:
2221 RETVAL 2904 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2905
2228void 2906void
2229transfer (...) 2907transfer (...)
2230 PROTOTYPE: $$ 2908 PROTOTYPE: $$
2231 CODE: 2909 CODE:
… …
2241void 2919void
2242_exit (int code) 2920_exit (int code)
2243 PROTOTYPE: $ 2921 PROTOTYPE: $
2244 CODE: 2922 CODE:
2245 _exit (code); 2923 _exit (code);
2924
2925SV *
2926clone (Coro::State coro)
2927 CODE:
2928{
2929#if CORO_CLONE
2930 struct coro *ncoro = coro_clone (aTHX_ coro);
2931 MAGIC *mg;
2932 /* TODO: too much duplication */
2933 ncoro->hv = newHV ();
2934 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2935 mg->mg_flags |= MGf_DUP;
2936 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2937#else
2938 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2939#endif
2940}
2941 OUTPUT:
2942 RETVAL
2246 2943
2247int 2944int
2248cctx_stacksize (int new_stacksize = 0) 2945cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 2946 PROTOTYPE: ;$
2250 CODE: 2947 CODE:
… …
2355 3052
2356void 3053void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3054throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3055 PROTOTYPE: $;$
2359 CODE: 3056 CODE:
3057{
3058 struct coro *current = SvSTATE_current;
3059 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3060 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3061 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3062}
2362 3063
2363void 3064void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3065api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3066 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3067 C_ARGS: aTHX_ coro, flags
2367 3068
2368SV * 3069SV *
2369has_cctx (Coro::State coro) 3070has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3071 PROTOTYPE: $
2371 CODE: 3072 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3073 /* maybe manage the running flag differently */
3074 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3075 OUTPUT:
2374 RETVAL 3076 RETVAL
2375 3077
2376int 3078int
2377is_traced (Coro::State coro) 3079is_traced (Coro::State coro)
… …
2397 3099
2398void 3100void
2399force_cctx () 3101force_cctx ()
2400 PROTOTYPE: 3102 PROTOTYPE:
2401 CODE: 3103 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3104 cctx_current->idle_sp = 0;
2403 3105
2404void 3106void
2405swap_defsv (Coro::State self) 3107swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3108 PROTOTYPE: $
2407 ALIAS: 3109 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3117 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3118
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3119 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3120 }
2419 3121
3122
2420MODULE = Coro::State PACKAGE = Coro 3123MODULE = Coro::State PACKAGE = Coro
2421 3124
2422BOOT: 3125BOOT:
2423{ 3126{
2424 int i; 3127 int i;
2425 3128
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3129 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3130 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3131 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3132 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3133 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3134 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3135 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3136 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3137 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3138
3139 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3140 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3141 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3142 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2432 3143
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3144 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3145
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3146 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3147 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3155
2445 { 3156 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3157 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3158
2448 coroapi.schedule = api_schedule; 3159 coroapi.schedule = api_schedule;
3160 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3161 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3162 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3163 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3164 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3165 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3166 coroapi.current = coro_current;
2455 3167
2456 GCoroAPI = &coroapi; 3168 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3169 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3170 SvREADONLY_on (sv);
2459 } 3171 }
2460} 3172}
3173
3174void
3175terminate (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3178
2462void 3179void
2463schedule (...) 3180schedule (...)
2464 CODE: 3181 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3182 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466 3183
2467void 3184void
3185schedule_to (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3188
3189void
3190cede_to (...)
3191 CODE:
3192 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3193
3194void
2468cede (...) 3195cede (...)
2469 CODE: 3196 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3197 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471 3198
2472void 3199void
2473cede_notself (...) 3200cede_notself (...)
2474 CODE: 3201 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3202 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3203
3204void
3205_cancel (Coro::State self)
3206 CODE:
3207 coro_state_destroy (aTHX_ self);
3208 coro_call_on_destroy (aTHX_ self);
2476 3209
2477void 3210void
2478_set_current (SV *current) 3211_set_current (SV *current)
2479 PROTOTYPE: $ 3212 PROTOTYPE: $
2480 CODE: 3213 CODE:
… …
2525 CODE: 3258 CODE:
2526 RETVAL = coro_nready; 3259 RETVAL = coro_nready;
2527 OUTPUT: 3260 OUTPUT:
2528 RETVAL 3261 RETVAL
2529 3262
2530# for async_pool speedup
2531void 3263void
2532_pool_1 (SV *cb) 3264_pool_handler (...)
2533 CODE: 3265 CODE:
2534{ 3266 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541
2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 {
2563 av_fill (defav, len - 1);
2564 for (i = 0; i < len; ++i)
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2566 }
2567}
2568 3267
2569void 3268void
2570_pool_2 (SV *cb) 3269async_pool (SV *cv, ...)
2571 CODE:
2572{
2573 struct coro *coro = SvSTATE_current;
2574
2575 sv_setsv (cb, &PL_sv_undef);
2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $ 3270 PROTOTYPE: &@
2607 PPCODE: 3271 PPCODE:
2608{ 3272{
2609 AV *defav = GvAV (PL_defgv); 3273 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3274 AV *av = newAV ();
3275 SV *cb = ST (0);
2611 int i; 3276 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3277
2617 data->errorno = errno; 3278 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3279 for (i = 1; i < items; ++i)
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3280 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3281
2627 av_push (av, data_sv); 3282 if ((SV *)hv == &PL_sv_undef)
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 { 3283 {
2674 PUSHMARK (SP); 3284 PUSHMARK (SP);
3285 EXTEND (SP, 2);
3286 PUSHs (sv_Coro);
3287 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3288 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3289 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3290 SPAGAIN;
3291
3292 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3293 }
2679 3294
2680 --incede; 3295 {
3296 struct coro *coro = SvSTATE_hv (hv);
3297
3298 assert (!coro->invoke_cb);
3299 assert (!coro->invoke_av);
3300 coro->invoke_cb = SvREFCNT_inc (cb);
3301 coro->invoke_av = av;
3302 }
3303
3304 api_ready (aTHX_ (SV *)hv);
3305
3306 if (GIMME_V != G_VOID)
3307 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3308 else
3309 SvREFCNT_dec (hv);
2681} 3310}
3311
3312SV *
3313rouse_cb ()
3314 PROTOTYPE:
3315 CODE:
3316 RETVAL = coro_new_rouse_cb (aTHX);
3317 OUTPUT:
3318 RETVAL
3319
3320void
3321rouse_wait (...)
3322 PROTOTYPE: ;$
3323 PPCODE:
3324 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2682 3325
2683 3326
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3327MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3328
2686BOOT: 3329BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3330 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3331
3332
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3333MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3334
2691SV * 3335SV *
2692new (SV *klass, SV *count_ = 0) 3336new (SV *klass, SV *count = 0)
2693 CODE: 3337 CODE:
2694{ 3338 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3339 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3340 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3341 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3342 OUTPUT:
2699} 3343 RETVAL
3344
3345# helper for Coro::Channel
3346SV *
3347_alloc (int count)
3348 CODE:
3349 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3350 OUTPUT:
2701 RETVAL 3351 RETVAL
2702 3352
2703SV * 3353SV *
2704count (SV *self) 3354count (SV *self)
… …
2713 adjust = 1 3363 adjust = 1
2714 CODE: 3364 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3365 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3366
2717void 3367void
2718down (SV *self) 3368down (...)
2719 CODE: 3369 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3370 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3371
3372void
3373wait (...)
3374 CODE:
3375 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3376
2722void 3377void
2723try (SV *self) 3378try (SV *self)
2724 PPCODE: 3379 PPCODE:
2725{ 3380{
… …
2737 XSRETURN_NO; 3392 XSRETURN_NO;
2738} 3393}
2739 3394
2740void 3395void
2741waiters (SV *self) 3396waiters (SV *self)
2742 CODE: 3397 PPCODE:
2743{ 3398{
2744 AV *av = (AV *)SvRV (self); 3399 AV *av = (AV *)SvRV (self);
3400 int wcount = AvFILLp (av) + 1 - 1;
2745 3401
2746 if (GIMME_V == G_SCALAR) 3402 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3403 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3404 else
2749 { 3405 {
2750 int i; 3406 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3407 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3408 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3409 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3410 }
2755} 3411}
2756 3412
3413MODULE = Coro::State PACKAGE = Coro::Signal
3414
3415SV *
3416new (SV *klass)
3417 CODE:
3418 RETVAL = sv_bless (
3419 coro_waitarray_new (aTHX_ 0),
3420 GvSTASH (CvGV (cv))
3421 );
3422 OUTPUT:
3423 RETVAL
3424
3425void
3426wait (...)
3427 CODE:
3428 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3429
3430void
3431broadcast (SV *self)
3432 CODE:
3433{
3434 AV *av = (AV *)SvRV (self);
3435 coro_signal_wake (aTHX_ av, AvFILLp (av));
3436}
3437
3438void
3439send (SV *self)
3440 CODE:
3441{
3442 AV *av = (AV *)SvRV (self);
3443
3444 if (AvFILLp (av))
3445 coro_signal_wake (aTHX_ av, 1);
3446 else
3447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3448}
3449
3450IV
3451awaited (SV *self)
3452 CODE:
3453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3454 OUTPUT:
3455 RETVAL
3456
3457
3458MODULE = Coro::State PACKAGE = Coro::AnyEvent
3459
3460BOOT:
3461 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3462
3463void
3464_schedule (...)
3465 CODE:
3466{
3467 static int incede;
3468
3469 api_cede_notself (aTHX);
3470
3471 ++incede;
3472 while (coro_nready >= incede && api_cede (aTHX))
3473 ;
3474
3475 sv_setsv (sv_activity, &PL_sv_undef);
3476 if (coro_nready >= incede)
3477 {
3478 PUSHMARK (SP);
3479 PUTBACK;
3480 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3481 }
3482
3483 --incede;
3484}
3485
3486
3487MODULE = Coro::State PACKAGE = Coro::AIO
3488
3489void
3490_register (char *target, char *proto, SV *req)
3491 CODE:
3492{
3493 CV *req_cv = coro_sv_2cv (aTHX_ req);
3494 /* newXSproto doesn't return the CV on 5.8 */
3495 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3496 sv_setpv ((SV *)slf_cv, proto);
3497 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3498}
3499

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