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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 1.336 by root, Thu Dec 4 17:29:40 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 */
879}
880 929
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;
940}
941
881static void 942static void
882coro_destruct (pTHX_ struct coro *coro) 943coro_destruct_perl (pTHX_ struct coro *coro)
883{ 944{
884 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
885 { 946 {
886 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
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 (("FATAL: tried to destroy current cctx", 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;
1340
1341 /* possibly untie and reuse the cctx */ 1410 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1411 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1412 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1413 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1414 && !force_cctx
1346 )) 1415 ))
1347 { 1416 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1417 /* 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)); 1418 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1419
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 */ 1420 /* 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 */ 1421 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1422 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1423 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1424 next->cctx = cctx_get (aTHX);
1358 1425
1359 cctx_put (prev__cctx); 1426 cctx_put (cctx_current);
1360 } 1427 }
1428 else
1429 prev->cctx = cctx_current;
1361 1430
1362 ++next->usecount; 1431 ++next->usecount;
1363 1432
1364 if (expect_true (!next->cctx)) 1433 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1434 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1435
1367 if (expect_false (prev__cctx != next->cctx)) 1436 next->cctx = 0;
1437
1438 if (expect_false (cctx_prev != cctx_current))
1368 { 1439 {
1369 prev__cctx->top_env = PL_top_env; 1440 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1441 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1442 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1443 }
1373 1444
1374 transfer_tail (aTHX); 1445 transfer_tail (aTHX);
1375 } 1446 }
1376} 1447}
… …
1398 --coro_nready; 1469 --coro_nready;
1399 } 1470 }
1400 else 1471 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1472 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1473
1403 if (coro->mainstack && coro->mainstack != main_mainstack) 1474 if (coro->mainstack
1475 && coro->mainstack != main_mainstack
1476 && coro->slot
1477 && !PL_dirty)
1404 { 1478 {
1405 struct coro temp; 1479 struct coro temp;
1406 1480
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1481 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1408 1482
1409 save_perl (aTHX_ &temp); 1483 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro); 1484 load_perl (aTHX_ coro);
1411 1485
1412 coro_destruct (aTHX_ coro); 1486 coro_destruct_perl (aTHX_ coro);
1413 1487
1414 load_perl (aTHX_ &temp); 1488 load_perl (aTHX_ &temp);
1415 1489
1416 coro->slot = 0; 1490 coro->slot = 0;
1417 } 1491 }
1418 1492
1419 cctx_destroy (coro->cctx); 1493 cctx_destroy (coro->cctx);
1494 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1495 SvREFCNT_dec (coro->args);
1496 SvREFCNT_dec (CORO_THROW);
1421 1497
1422 if (coro->next) coro->next->prev = coro->prev; 1498 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1499 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1500 if (coro == coro_first) coro_first = coro->next;
1425 1501
… …
1479 1555
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1556 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1557 TRANSFER (ta, 1);
1482} 1558}
1483 1559
1560/*****************************************************************************/
1561/* gensub: simple closure generation utility */
1562
1563#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1564
1565/* create a closure from XS, returns a code reference */
1566/* the arg can be accessed via GENSUB_ARG from the callback */
1567/* the callback must use dXSARGS/XSRETURN */
1568static SV *
1569gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1570{
1571 CV *cv = (CV *)newSV (0);
1572
1573 sv_upgrade ((SV *)cv, SVt_PVCV);
1574
1575 CvANON_on (cv);
1576 CvISXSUB_on (cv);
1577 CvXSUB (cv) = xsub;
1578 GENSUB_ARG = arg;
1579
1580 return newRV_noinc ((SV *)cv);
1581}
1582
1484/** Coro ********************************************************************/ 1583/** Coro ********************************************************************/
1485 1584
1486INLINE void 1585INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1586coro_enq (pTHX_ struct coro *coro)
1488{ 1587{
… …
1506{ 1605{
1507 struct coro *coro; 1606 struct coro *coro;
1508 SV *sv_hook; 1607 SV *sv_hook;
1509 void (*xs_hook)(void); 1608 void (*xs_hook)(void);
1510 1609
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1610 coro = SvSTATE (coro_sv);
1515 1611
1516 if (coro->flags & CF_READY) 1612 if (coro->flags & CF_READY)
1517 return 0; 1613 return 0;
1518 1614
… …
1531 ENTER; 1627 ENTER;
1532 SAVETMPS; 1628 SAVETMPS;
1533 1629
1534 PUSHMARK (SP); 1630 PUSHMARK (SP);
1535 PUTBACK; 1631 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1632 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1633
1539 FREETMPS; 1634 FREETMPS;
1540 LEAVE; 1635 LEAVE;
1541 } 1636 }
1542 1637
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1645api_is_ready (pTHX_ SV *coro_sv)
1551{ 1646{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1647 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1648}
1554 1649
1650/* expects to own a reference to next->hv */
1555INLINE void 1651INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1652prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1653{
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); 1654 SV *prev_sv = SvRV (coro_current);
1655
1598 ta->prev = SvSTATE_hv (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1657 ta->next = next;
1658
1599 TRANSFER_CHECK (*ta); 1659 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1660
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1661 SvRV_set (coro_current, (SV *)next->hv);
1603 1662
1604 free_coro_mortal (aTHX); 1663 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1664 coro_mortal = prev_sv;
1606} 1665}
1607 1666
1667static void
1668prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1669{
1670 for (;;)
1671 {
1672 SV *next_sv = coro_deq (aTHX);
1673
1674 if (expect_true (next_sv))
1675 {
1676 struct coro *next = SvSTATE_hv (next_sv);
1677
1678 /* cannot transfer to destroyed coros, skip and look for next */
1679 if (expect_false (next->flags & CF_DESTROYED))
1680 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1681 else
1682 {
1683 next->flags &= ~CF_READY;
1684 --coro_nready;
1685
1686 prepare_schedule_to (aTHX_ ta, next);
1687 break;
1688 }
1689 }
1690 else
1691 {
1692 /* nothing to schedule: call the idle handler */
1693 if (SvROK (sv_idle)
1694 && SvOBJECT (SvRV (sv_idle)))
1695 {
1696 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1697 api_ready (aTHX_ SvRV (sv_idle));
1698 --coro_nready;
1699 }
1700 else
1701 {
1702 dSP;
1703
1704 ENTER;
1705 SAVETMPS;
1706
1707 PUSHMARK (SP);
1708 PUTBACK;
1709 call_sv (sv_idle, G_VOID | G_DISCARD);
1710
1711 FREETMPS;
1712 LEAVE;
1713 }
1714 }
1715 }
1716}
1717
1608INLINE void 1718INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1719prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1720{
1611 api_ready (aTHX_ coro_current); 1721 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1722 prepare_schedule (aTHX_ ta);
… …
1631{ 1741{
1632 struct coro_transfer_args ta; 1742 struct coro_transfer_args ta;
1633 1743
1634 prepare_schedule (aTHX_ &ta); 1744 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1745 TRANSFER (ta, 1);
1746}
1747
1748static void
1749api_schedule_to (pTHX_ SV *coro_sv)
1750{
1751 struct coro_transfer_args ta;
1752 struct coro *next = SvSTATE (coro_sv);
1753
1754 SvREFCNT_inc_NN (coro_sv);
1755 prepare_schedule_to (aTHX_ &ta, next);
1636} 1756}
1637 1757
1638static int 1758static int
1639api_cede (pTHX) 1759api_cede (pTHX)
1640{ 1760{
… …
1669static void 1789static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1790api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1791{
1672 struct coro *coro = SvSTATE (coro_sv); 1792 struct coro *coro = SvSTATE (coro_sv);
1673 1793
1794 if (coro->flags & CF_RUNNING)
1795 croak ("cannot enable tracing on a running coroutine, caught");
1796
1674 if (flags & CC_TRACE) 1797 if (flags & CC_TRACE)
1675 { 1798 {
1676 if (!coro->cctx) 1799 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1800 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1801 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1802 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1803
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1804 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1805 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1806 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1807 {
… …
1687 if (coro->flags & CF_RUNNING) 1810 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1811 PL_runops = RUNOPS_DEFAULT;
1689 else 1812 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1813 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1814 }
1815}
1816
1817static void
1818coro_call_on_destroy (pTHX_ struct coro *coro)
1819{
1820 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1821 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1822
1823 if (on_destroyp)
1824 {
1825 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1826
1827 while (AvFILLp (on_destroy) >= 0)
1828 {
1829 dSP; /* don't disturb outer sp */
1830 SV *cb = av_pop (on_destroy);
1831
1832 PUSHMARK (SP);
1833
1834 if (statusp)
1835 {
1836 int i;
1837 AV *status = (AV *)SvRV (*statusp);
1838 EXTEND (SP, AvFILLp (status) + 1);
1839
1840 for (i = 0; i <= AvFILLp (status); ++i)
1841 PUSHs (AvARRAY (status)[i]);
1842 }
1843
1844 PUTBACK;
1845 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1846 }
1847 }
1848}
1849
1850static void
1851slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 int i;
1854 HV *hv = (HV *)SvRV (coro_current);
1855 AV *av = newAV ();
1856
1857 av_extend (av, items - 1);
1858 for (i = 0; i < items; ++i)
1859 av_push (av, SvREFCNT_inc_NN (arg [i]));
1860
1861 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1862
1863 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1864 api_ready (aTHX_ sv_manager);
1865
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_repeat;
1868}
1869
1870/*****************************************************************************/
1871/* async pool handler */
1872
1873static int
1874slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1875{
1876 HV *hv = (HV *)SvRV (coro_current);
1877 struct coro *coro = (struct coro *)frame->data;
1878
1879 if (!coro->invoke_cb)
1880 return 1; /* loop till we have invoke */
1881 else
1882 {
1883 hv_store (hv, "desc", sizeof ("desc") - 1,
1884 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1885
1886 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1887
1888 {
1889 dSP;
1890 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1891 PUTBACK;
1892 }
1893
1894 SvREFCNT_dec (GvAV (PL_defgv));
1895 GvAV (PL_defgv) = coro->invoke_av;
1896 coro->invoke_av = 0;
1897
1898 return 0;
1899 }
1900}
1901
1902static void
1903slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 HV *hv = (HV *)SvRV (coro_current);
1906 struct coro *coro = SvSTATE_hv ((SV *)hv);
1907
1908 if (expect_true (coro->saved_deffh))
1909 {
1910 /* subsequent iteration */
1911 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1912 coro->saved_deffh = 0;
1913
1914 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1915 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1916 {
1917 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1918 coro->invoke_av = newAV ();
1919
1920 frame->prepare = prepare_nop;
1921 }
1922 else
1923 {
1924 av_clear (GvAV (PL_defgv));
1925 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1926
1927 coro->prio = 0;
1928
1929 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1930 api_trace (aTHX_ coro_current, 0);
1931
1932 frame->prepare = prepare_schedule;
1933 av_push (av_async_pool, SvREFCNT_inc (hv));
1934 }
1935 }
1936 else
1937 {
1938 /* first iteration, simply fall through */
1939 frame->prepare = prepare_nop;
1940 }
1941
1942 frame->check = slf_check_pool_handler;
1943 frame->data = (void *)coro;
1944}
1945
1946/*****************************************************************************/
1947/* rouse callback */
1948
1949#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1950
1951static void
1952coro_rouse_callback (pTHX_ CV *cv)
1953{
1954 dXSARGS;
1955 SV *data = (SV *)GENSUB_ARG;
1956
1957 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1958 {
1959 /* first call, set args */
1960 AV *av = newAV ();
1961 SV *coro = SvRV (data);
1962
1963 SvRV_set (data, (SV *)av);
1964 api_ready (aTHX_ coro);
1965 SvREFCNT_dec (coro);
1966
1967 /* better take a full copy of the arguments */
1968 while (items--)
1969 av_store (av, items, newSVsv (ST (items)));
1970 }
1971
1972 XSRETURN_EMPTY;
1973}
1974
1975static int
1976slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1977{
1978 SV *data = (SV *)frame->data;
1979
1980 if (CORO_THROW)
1981 return 0;
1982
1983 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1984 return 1;
1985
1986 /* now push all results on the stack */
1987 {
1988 dSP;
1989 AV *av = (AV *)SvRV (data);
1990 int i;
1991
1992 EXTEND (SP, AvFILLp (av) + 1);
1993 for (i = 0; i <= AvFILLp (av); ++i)
1994 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1995
1996 /* we have stolen the elements, so ste length to zero and free */
1997 AvFILLp (av) = -1;
1998 av_undef (av);
1999
2000 PUTBACK;
2001 }
2002
2003 return 0;
2004}
2005
2006static void
2007slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 SV *cb;
2010
2011 if (items)
2012 cb = arg [0];
2013 else
2014 {
2015 struct coro *coro = SvSTATE_current;
2016
2017 if (!coro->rouse_cb)
2018 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2019
2020 cb = sv_2mortal (coro->rouse_cb);
2021 coro->rouse_cb = 0;
2022 }
2023
2024 if (!SvROK (cb)
2025 || SvTYPE (SvRV (cb)) != SVt_PVCV
2026 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2027 croak ("Coro::rouse_wait called with illegal callback argument,");
2028
2029 {
2030 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2031 SV *data = (SV *)GENSUB_ARG;
2032
2033 frame->data = (void *)data;
2034 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2035 frame->check = slf_check_rouse_wait;
2036 }
2037}
2038
2039static SV *
2040coro_new_rouse_cb (pTHX)
2041{
2042 HV *hv = (HV *)SvRV (coro_current);
2043 struct coro *coro = SvSTATE_hv (hv);
2044 SV *data = newRV_inc ((SV *)hv);
2045 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2046
2047 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2048 SvREFCNT_dec (data); /* magicext increases the refcount */
2049
2050 SvREFCNT_dec (coro->rouse_cb);
2051 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2052
2053 return cb;
2054}
2055
2056/*****************************************************************************/
2057/* schedule-like-function opcode (SLF) */
2058
2059static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2060static const CV *slf_cv;
2061static SV **slf_argv;
2062static int slf_argc, slf_arga; /* count, allocated */
2063static I32 slf_ax; /* top of stack, for restore */
2064
2065/* this restores the stack in the case we patched the entersub, to */
2066/* recreate the stack frame as perl will on following calls */
2067/* since entersub cleared the stack */
2068static OP *
2069pp_restore (pTHX)
2070{
2071 int i;
2072 SV **SP = PL_stack_base + slf_ax;
2073
2074 PUSHMARK (SP);
2075
2076 EXTEND (SP, slf_argc + 1);
2077
2078 for (i = 0; i < slf_argc; ++i)
2079 PUSHs (sv_2mortal (slf_argv [i]));
2080
2081 PUSHs ((SV *)CvGV (slf_cv));
2082
2083 RETURNOP (slf_restore.op_first);
2084}
2085
2086static void
2087slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2088{
2089 SV **arg = (SV **)slf_frame.data;
2090
2091 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2092}
2093
2094static void
2095slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 if (items != 2)
2098 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2099
2100 frame->prepare = slf_prepare_transfer;
2101 frame->check = slf_check_nop;
2102 frame->data = (void *)arg; /* let's hope it will stay valid */
2103}
2104
2105static void
2106slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2107{
2108 frame->prepare = prepare_schedule;
2109 frame->check = slf_check_nop;
2110}
2111
2112static void
2113slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2114{
2115 struct coro *next = (struct coro *)slf_frame.data;
2116
2117 SvREFCNT_inc_NN (next->hv);
2118 prepare_schedule_to (aTHX_ ta, next);
2119}
2120
2121static void
2122slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 if (!items)
2125 croak ("Coro::schedule_to expects a coroutine argument, caught");
2126
2127 frame->data = (void *)SvSTATE (arg [0]);
2128 frame->prepare = slf_prepare_schedule_to;
2129 frame->check = slf_check_nop;
2130}
2131
2132static void
2133slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 api_ready (aTHX_ SvRV (coro_current));
2136
2137 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2138}
2139
2140static void
2141slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_cede;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 frame->prepare = prepare_cede_notself;
2151 frame->check = slf_check_nop;
2152}
2153
2154/*
2155 * these not obviously related functions are all rolled into one
2156 * function to increase chances that they all will call transfer with the same
2157 * stack offset
2158 * SLF stands for "schedule-like-function".
2159 */
2160static OP *
2161pp_slf (pTHX)
2162{
2163 I32 checkmark; /* mark SP to see how many elements check has pushed */
2164
2165 /* set up the slf frame, unless it has already been set-up */
2166 /* the latter happens when a new coro has been started */
2167 /* or when a new cctx was attached to an existing coroutine */
2168 if (expect_true (!slf_frame.prepare))
2169 {
2170 /* first iteration */
2171 dSP;
2172 SV **arg = PL_stack_base + TOPMARK + 1;
2173 int items = SP - arg; /* args without function object */
2174 SV *gv = *sp;
2175
2176 /* do a quick consistency check on the "function" object, and if it isn't */
2177 /* for us, divert to the real entersub */
2178 if (SvTYPE (gv) != SVt_PVGV
2179 || !GvCV (gv)
2180 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2181 return PL_ppaddr[OP_ENTERSUB](aTHX);
2182
2183 if (!(PL_op->op_flags & OPf_STACKED))
2184 {
2185 /* ampersand-form of call, use @_ instead of stack */
2186 AV *av = GvAV (PL_defgv);
2187 arg = AvARRAY (av);
2188 items = AvFILLp (av) + 1;
2189 }
2190
2191 /* now call the init function, which needs to set up slf_frame */
2192 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2193 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2194
2195 /* pop args */
2196 SP = PL_stack_base + POPMARK;
2197
2198 PUTBACK;
2199 }
2200
2201 /* now that we have a slf_frame, interpret it! */
2202 /* we use a callback system not to make the code needlessly */
2203 /* complicated, but so we can run multiple perl coros from one cctx */
2204
2205 do
2206 {
2207 struct coro_transfer_args ta;
2208
2209 slf_frame.prepare (aTHX_ &ta);
2210 TRANSFER (ta, 0);
2211
2212 checkmark = PL_stack_sp - PL_stack_base;
2213 }
2214 while (slf_frame.check (aTHX_ &slf_frame));
2215
2216 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2217
2218 /* exception handling */
2219 if (expect_false (CORO_THROW))
2220 {
2221 SV *exception = sv_2mortal (CORO_THROW);
2222
2223 CORO_THROW = 0;
2224 sv_setsv (ERRSV, exception);
2225 croak (0);
2226 }
2227
2228 /* return value handling - mostly like entersub */
2229 /* make sure we put something on the stack in scalar context */
2230 if (GIMME_V == G_SCALAR)
2231 {
2232 dSP;
2233 SV **bot = PL_stack_base + checkmark;
2234
2235 if (sp == bot) /* too few, push undef */
2236 bot [1] = &PL_sv_undef;
2237 else if (sp != bot + 1) /* too many, take last one */
2238 bot [1] = *sp;
2239
2240 SP = bot + 1;
2241
2242 PUTBACK;
2243 }
2244
2245 return NORMAL;
2246}
2247
2248static void
2249api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2250{
2251 int i;
2252 SV **arg = PL_stack_base + ax;
2253 int items = PL_stack_sp - arg + 1;
2254
2255 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2256
2257 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2258 && PL_op->op_ppaddr != pp_slf)
2259 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2260
2261 CvFLAGS (cv) |= CVf_SLF;
2262 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2263 slf_cv = cv;
2264
2265 /* we patch the op, and then re-run the whole call */
2266 /* we have to put the same argument on the stack for this to work */
2267 /* and this will be done by pp_restore */
2268 slf_restore.op_next = (OP *)&slf_restore;
2269 slf_restore.op_type = OP_CUSTOM;
2270 slf_restore.op_ppaddr = pp_restore;
2271 slf_restore.op_first = PL_op;
2272
2273 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2274
2275 if (PL_op->op_flags & OPf_STACKED)
2276 {
2277 if (items > slf_arga)
2278 {
2279 slf_arga = items;
2280 free (slf_argv);
2281 slf_argv = malloc (slf_arga * sizeof (SV *));
2282 }
2283
2284 slf_argc = items;
2285
2286 for (i = 0; i < items; ++i)
2287 slf_argv [i] = SvREFCNT_inc (arg [i]);
2288 }
2289 else
2290 slf_argc = 0;
2291
2292 PL_op->op_ppaddr = pp_slf;
2293 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2294
2295 PL_op = (OP *)&slf_restore;
1692} 2296}
1693 2297
1694/*****************************************************************************/ 2298/*****************************************************************************/
1695/* PerlIO::cede */ 2299/* PerlIO::cede */
1696 2300
… …
1765 PerlIOBuf_get_cnt, 2369 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2370 PerlIOBuf_set_ptrcnt,
1767}; 2371};
1768 2372
1769/*****************************************************************************/ 2373/*****************************************************************************/
2374/* Coro::Semaphore & Coro::Signal */
1770 2375
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 * 2376static SV *
1782pp_restore (pTHX) 2377coro_waitarray_new (pTHX_ int count)
1783{ 2378{
1784 SV **SP = PL_stack_base + slf_ax; 2379 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2380 AV *av = newAV ();
2381 SV **ary;
1785 2382
1786 PUSHMARK (SP); 2383 /* unfortunately, building manually saves memory */
1787 2384 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2385 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2386#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2387 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2388#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2389 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2390 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2391 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 2392#endif
2393 AvMAX (av) = 1;
2394 AvFILLp (av) = 0;
2395 ary [0] = newSViv (count);
1978 2396
1979 CvFLAGS (cv) |= CVf_SLF; 2397 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} 2398}
2001 2399
2002/*****************************************************************************/ 2400/* semaphore */
2003 2401
2004static void 2402static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2403coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2404{
2007 SV *count_sv = AvARRAY (av)[0]; 2405 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2417 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2418 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2419 cb = av_shift (av);
2022 2420
2023 if (SvOBJECT (cb)) 2421 if (SvOBJECT (cb))
2422 {
2024 api_ready (aTHX_ cb); 2423 api_ready (aTHX_ cb);
2025 else 2424 --count;
2026 croak ("callbacks not yet supported"); 2425 }
2426 else if (SvTYPE (cb) == SVt_PVCV)
2427 {
2428 dSP;
2429 PUSHMARK (SP);
2430 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2431 PUTBACK;
2432 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2433 }
2027 2434
2028 SvREFCNT_dec (cb); 2435 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2436 }
2032} 2437}
2033 2438
2034static void 2439static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2440coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2442 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2443 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2444}
2040 2445
2041static int 2446static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2447slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2448{
2044 AV *av = (AV *)frame->data; 2449 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2450 SV *count_sv = AvARRAY (av)[0];
2046 2451
2452 /* if we are about to throw, don't actually acquire the lock, just throw */
2453 if (CORO_THROW)
2454 return 0;
2047 if (SvIVX (count_sv) > 0) 2455 else if (SvIVX (count_sv) > 0)
2048 { 2456 {
2049 SvSTATE_current->on_destroy = 0; 2457 SvSTATE_current->on_destroy = 0;
2458
2459 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2460 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2461 else
2462 coro_semaphore_adjust (aTHX_ av, 0);
2463
2051 return 0; 2464 return 0;
2052 } 2465 }
2053 else 2466 else
2054 { 2467 {
2055 int i; 2468 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2477 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2478 return 1;
2066 } 2479 }
2067} 2480}
2068 2481
2069static void 2482static int
2483slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2484{
2485 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2486}
2487
2488static int
2489slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2490{
2491 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2492}
2493
2494static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2495slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2496{
2072 AV *av = (AV *)SvRV (arg [0]); 2497 AV *av = (AV *)SvRV (arg [0]);
2073 2498
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2499 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2500 {
2076 frame->data = (void *)av; 2501 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2502 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2503 }
2080 else 2504 else
2081 { 2505 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2506 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2507
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2508 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2509 frame->prepare = prepare_schedule;
2086 2510
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2511 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2512 /* 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; 2513 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2514 }
2515}
2092 2516
2517static void
2518slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2519{
2520 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2521 frame->check = slf_check_semaphore_down;
2522}
2094 2523
2524static void
2525slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 if (items >= 2)
2528 {
2529 /* callback form */
2530 AV *av = (AV *)SvRV (arg [0]);
2531 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2532
2533 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2534
2535 if (SvIVX (AvARRAY (av)[0]) > 0)
2536 coro_semaphore_adjust (aTHX_ av, 0);
2537
2538 frame->prepare = prepare_nop;
2539 frame->check = slf_check_nop;
2540 }
2541 else
2542 {
2543 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2544 frame->check = slf_check_semaphore_wait;
2545 }
2546}
2547
2548/* signal */
2549
2550static void
2551coro_signal_wake (pTHX_ AV *av, int count)
2552{
2553 SvIVX (AvARRAY (av)[0]) = 0;
2554
2555 /* now signal count waiters */
2556 while (count > 0 && AvFILLp (av) > 0)
2557 {
2558 SV *cb;
2559
2560 /* swap first two elements so we can shift a waiter */
2561 cb = AvARRAY (av)[0];
2562 AvARRAY (av)[0] = AvARRAY (av)[1];
2563 AvARRAY (av)[1] = cb;
2564
2565 cb = av_shift (av);
2566
2567 api_ready (aTHX_ cb);
2568 sv_setiv (cb, 0); /* signal waiter */
2569 SvREFCNT_dec (cb);
2570
2571 --count;
2572 }
2573}
2574
2575static int
2576slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2577{
2578 /* if we are about to throw, also stop waiting */
2579 return SvROK ((SV *)frame->data) && !CORO_THROW;
2580}
2581
2582static void
2583slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2584{
2585 AV *av = (AV *)SvRV (arg [0]);
2586
2587 if (SvIVX (AvARRAY (av)[0]))
2588 {
2589 SvIVX (AvARRAY (av)[0]) = 0;
2590 frame->prepare = prepare_nop;
2591 frame->check = slf_check_nop;
2592 }
2593 else
2594 {
2595 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2596
2597 av_push (av, waiter);
2598
2599 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2600 frame->prepare = prepare_schedule;
2601 frame->check = slf_check_signal_wait;
2602 }
2095} 2603}
2096 2604
2097/*****************************************************************************/ 2605/*****************************************************************************/
2606/* Coro::AIO */
2098 2607
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2608#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2609
2101/* create a closure from XS, returns a code reference */ 2610/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2611struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2612{
2107 CV *cv = (CV *)NEWSV (0, 0); 2613 int errorno;
2614 I32 laststype; /* U16 in 5.10.0 */
2615 int laststatval;
2616 Stat_t statcache;
2617};
2108 2618
2619static void
2620coro_aio_callback (pTHX_ CV *cv)
2621{
2622 dXSARGS;
2623 AV *state = (AV *)GENSUB_ARG;
2624 SV *coro = av_pop (state);
2625 SV *data_sv = newSV (sizeof (struct io_state));
2626
2627 av_extend (state, items - 1);
2628
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2629 sv_upgrade (data_sv, SVt_PV);
2630 SvCUR_set (data_sv, sizeof (struct io_state));
2631 SvPOK_only (data_sv);
2110 2632
2111 CvANON_on (cv); 2633 {
2112 CvISXSUB_on (cv); 2634 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2635
2116 return newRV_noinc ((SV *)cv); 2636 data->errorno = errno;
2637 data->laststype = PL_laststype;
2638 data->laststatval = PL_laststatval;
2639 data->statcache = PL_statcache;
2640 }
2641
2642 /* now build the result vector out of all the parameters and the data_sv */
2643 {
2644 int i;
2645
2646 for (i = 0; i < items; ++i)
2647 av_push (state, SvREFCNT_inc_NN (ST (i)));
2648 }
2649
2650 av_push (state, data_sv);
2651
2652 api_ready (aTHX_ coro);
2653 SvREFCNT_dec (coro);
2654 SvREFCNT_dec ((AV *)state);
2655}
2656
2657static int
2658slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2659{
2660 AV *state = (AV *)frame->data;
2661
2662 /* if we are about to throw, return early */
2663 /* this does not cancel the aio request, but at least */
2664 /* it quickly returns */
2665 if (CORO_THROW)
2666 return 0;
2667
2668 /* one element that is an RV? repeat! */
2669 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2670 return 1;
2671
2672 /* restore status */
2673 {
2674 SV *data_sv = av_pop (state);
2675 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2676
2677 errno = data->errorno;
2678 PL_laststype = data->laststype;
2679 PL_laststatval = data->laststatval;
2680 PL_statcache = data->statcache;
2681
2682 SvREFCNT_dec (data_sv);
2683 }
2684
2685 /* push result values */
2686 {
2687 dSP;
2688 int i;
2689
2690 EXTEND (SP, AvFILLp (state) + 1);
2691 for (i = 0; i <= AvFILLp (state); ++i)
2692 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2693
2694 PUTBACK;
2695 }
2696
2697 return 0;
2698}
2699
2700static void
2701slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2702{
2703 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2704 SV *coro_hv = SvRV (coro_current);
2705 struct coro *coro = SvSTATE_hv (coro_hv);
2706
2707 /* put our coroutine id on the state arg */
2708 av_push (state, SvREFCNT_inc_NN (coro_hv));
2709
2710 /* first see whether we have a non-zero priority and set it as AIO prio */
2711 if (coro->prio)
2712 {
2713 dSP;
2714
2715 static SV *prio_cv;
2716 static SV *prio_sv;
2717
2718 if (expect_false (!prio_cv))
2719 {
2720 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2721 prio_sv = newSViv (0);
2722 }
2723
2724 PUSHMARK (SP);
2725 sv_setiv (prio_sv, coro->prio);
2726 XPUSHs (prio_sv);
2727
2728 PUTBACK;
2729 call_sv (prio_cv, G_VOID | G_DISCARD);
2730 }
2731
2732 /* now call the original request */
2733 {
2734 dSP;
2735 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2736 int i;
2737
2738 PUSHMARK (SP);
2739
2740 /* first push all args to the stack */
2741 EXTEND (SP, items + 1);
2742
2743 for (i = 0; i < items; ++i)
2744 PUSHs (arg [i]);
2745
2746 /* now push the callback closure */
2747 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2748
2749 /* now call the AIO function - we assume our request is uncancelable */
2750 PUTBACK;
2751 call_sv ((SV *)req, G_VOID | G_DISCARD);
2752 }
2753
2754 /* now that the requets is going, we loop toll we have a result */
2755 frame->data = (void *)state;
2756 frame->prepare = prepare_schedule;
2757 frame->check = slf_check_aio_req;
2758}
2759
2760static void
2761coro_aio_req_xs (pTHX_ CV *cv)
2762{
2763 dXSARGS;
2764
2765 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2766
2767 XSRETURN_EMPTY;
2117} 2768}
2118 2769
2119/*****************************************************************************/ 2770/*****************************************************************************/
2771
2772#if CORO_CLONE
2773# include "clone.c"
2774#endif
2120 2775
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2776MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 2777
2123PROTOTYPES: DISABLE 2778PROTOTYPES: DISABLE
2124 2779
… …
2129 coro_thx = PERL_GET_CONTEXT; 2784 coro_thx = PERL_GET_CONTEXT;
2130# endif 2785# endif
2131#endif 2786#endif
2132 BOOT_PAGESIZE; 2787 BOOT_PAGESIZE;
2133 2788
2789 cctx_current = cctx_new_empty ();
2790
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2791 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2792 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 2793
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2794 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; 2795 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 2814
2158 { 2815 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2816 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 2817
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2818 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 2819 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 2820
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2821 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 2822 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 2823 }
2169 2824
2170 coroapi.ver = CORO_API_VERSION; 2825 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 2826 coroapi.rev = CORO_API_REVISION;
2172 2827
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2846 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2847}
2193 2848
2194SV * 2849SV *
2195new (char *klass, ...) 2850new (char *klass, ...)
2851 ALIAS:
2852 Coro::new = 1
2196 CODE: 2853 CODE:
2197{ 2854{
2198 struct coro *coro; 2855 struct coro *coro;
2199 MAGIC *mg; 2856 MAGIC *mg;
2200 HV *hv; 2857 HV *hv;
2858 CV *cb;
2201 int i; 2859 int i;
2860
2861 if (items > 1)
2862 {
2863 cb = coro_sv_2cv (aTHX_ ST (1));
2864
2865 if (!ix)
2866 {
2867 if (CvISXSUB (cb))
2868 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2869
2870 if (!CvROOT (cb))
2871 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2872 }
2873 }
2202 2874
2203 Newz (0, coro, 1, struct coro); 2875 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2876 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2877 coro->flags = CF_NEW;
2206 2878
… …
2211 coro->hv = hv = newHV (); 2883 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2884 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP; 2885 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2886 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2887
2888 if (items > 1)
2889 {
2216 av_extend (coro->args, items - 1); 2890 av_extend (coro->args, items - 1 + ix - 1);
2891
2892 if (ix)
2893 {
2894 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2895 cb = cv_coro_run;
2896 }
2897
2898 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2899
2217 for (i = 1; i < items; i++) 2900 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2901 av_push (coro->args, newSVsv (ST (i)));
2902 }
2219} 2903}
2220 OUTPUT: 2904 OUTPUT:
2221 RETVAL 2905 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2906
2228void 2907void
2229transfer (...) 2908transfer (...)
2230 PROTOTYPE: $$ 2909 PROTOTYPE: $$
2231 CODE: 2910 CODE:
… …
2241void 2920void
2242_exit (int code) 2921_exit (int code)
2243 PROTOTYPE: $ 2922 PROTOTYPE: $
2244 CODE: 2923 CODE:
2245 _exit (code); 2924 _exit (code);
2925
2926SV *
2927clone (Coro::State coro)
2928 CODE:
2929{
2930#if CORO_CLONE
2931 struct coro *ncoro = coro_clone (aTHX_ coro);
2932 MAGIC *mg;
2933 /* TODO: too much duplication */
2934 ncoro->hv = newHV ();
2935 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2936 mg->mg_flags |= MGf_DUP;
2937 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2938#else
2939 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2940#endif
2941}
2942 OUTPUT:
2943 RETVAL
2246 2944
2247int 2945int
2248cctx_stacksize (int new_stacksize = 0) 2946cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 2947 PROTOTYPE: ;$
2250 CODE: 2948 CODE:
… …
2355 3053
2356void 3054void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3055throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3056 PROTOTYPE: $;$
2359 CODE: 3057 CODE:
3058{
3059 struct coro *current = SvSTATE_current;
3060 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3061 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3062 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3063}
2362 3064
2363void 3065void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3066api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3067 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3068 C_ARGS: aTHX_ coro, flags
2367 3069
2368SV * 3070SV *
2369has_cctx (Coro::State coro) 3071has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3072 PROTOTYPE: $
2371 CODE: 3073 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3074 /* maybe manage the running flag differently */
3075 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3076 OUTPUT:
2374 RETVAL 3077 RETVAL
2375 3078
2376int 3079int
2377is_traced (Coro::State coro) 3080is_traced (Coro::State coro)
… …
2397 3100
2398void 3101void
2399force_cctx () 3102force_cctx ()
2400 PROTOTYPE: 3103 PROTOTYPE:
2401 CODE: 3104 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3105 cctx_current->idle_sp = 0;
2403 3106
2404void 3107void
2405swap_defsv (Coro::State self) 3108swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3109 PROTOTYPE: $
2407 ALIAS: 3110 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3118 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3119
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3120 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3121 }
2419 3122
3123
2420MODULE = Coro::State PACKAGE = Coro 3124MODULE = Coro::State PACKAGE = Coro
2421 3125
2422BOOT: 3126BOOT:
2423{ 3127{
2424 int i; 3128 int i;
2425 3129
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3130 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3131 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3132 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3133 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3134 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3135 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3136 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3137 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3138 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3139
3140 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3141 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3142 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3143 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2432 3144
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3145 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3146
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3147 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3148 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3156
2445 { 3157 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3158 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3159
2448 coroapi.schedule = api_schedule; 3160 coroapi.schedule = api_schedule;
3161 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3162 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3163 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3164 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3165 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3166 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3167 coroapi.current = coro_current;
2455 3168
2456 GCoroAPI = &coroapi; 3169 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3170 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3171 SvREADONLY_on (sv);
2459 } 3172 }
2460} 3173}
3174
3175void
3176terminate (...)
3177 CODE:
3178 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3179
2462void 3180void
2463schedule (...) 3181schedule (...)
2464 CODE: 3182 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3183 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466 3184
2467void 3185void
3186schedule_to (...)
3187 CODE:
3188 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3189
3190void
3191cede_to (...)
3192 CODE:
3193 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3194
3195void
2468cede (...) 3196cede (...)
2469 CODE: 3197 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3198 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471 3199
2472void 3200void
2473cede_notself (...) 3201cede_notself (...)
2474 CODE: 3202 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3203 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3204
3205void
3206_cancel (Coro::State self)
3207 CODE:
3208 coro_state_destroy (aTHX_ self);
3209 coro_call_on_destroy (aTHX_ self);
2476 3210
2477void 3211void
2478_set_current (SV *current) 3212_set_current (SV *current)
2479 PROTOTYPE: $ 3213 PROTOTYPE: $
2480 CODE: 3214 CODE:
… …
2525 CODE: 3259 CODE:
2526 RETVAL = coro_nready; 3260 RETVAL = coro_nready;
2527 OUTPUT: 3261 OUTPUT:
2528 RETVAL 3262 RETVAL
2529 3263
2530# for async_pool speedup
2531void 3264void
2532_pool_1 (SV *cb) 3265_pool_handler (...)
2533 CODE: 3266 CODE:
2534{ 3267 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 3268
2569void 3269void
2570_pool_2 (SV *cb) 3270async_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: $ 3271 PROTOTYPE: &@
2607 PPCODE: 3272 PPCODE:
2608{ 3273{
2609 AV *defav = GvAV (PL_defgv); 3274 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3275 AV *av = newAV ();
3276 SV *cb = ST (0);
2611 int i; 3277 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 3278
2617 data->errorno = errno; 3279 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3280 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])); 3281 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3282
2627 av_push (av, data_sv); 3283 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 { 3284 {
2674 PUSHMARK (SP); 3285 PUSHMARK (SP);
3286 EXTEND (SP, 2);
3287 PUSHs (sv_Coro);
3288 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3289 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3290 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3291 SPAGAIN;
3292
3293 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3294 }
2679 3295
2680 --incede; 3296 {
3297 struct coro *coro = SvSTATE_hv (hv);
3298
3299 assert (!coro->invoke_cb);
3300 assert (!coro->invoke_av);
3301 coro->invoke_cb = SvREFCNT_inc (cb);
3302 coro->invoke_av = av;
3303 }
3304
3305 api_ready (aTHX_ (SV *)hv);
3306
3307 if (GIMME_V != G_VOID)
3308 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3309 else
3310 SvREFCNT_dec (hv);
2681} 3311}
3312
3313SV *
3314rouse_cb ()
3315 PROTOTYPE:
3316 CODE:
3317 RETVAL = coro_new_rouse_cb (aTHX);
3318 OUTPUT:
3319 RETVAL
3320
3321void
3322rouse_wait (...)
3323 PROTOTYPE: ;$
3324 PPCODE:
3325 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2682 3326
2683 3327
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3328MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3329
2686BOOT: 3330BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3331 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3332
3333
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3334MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3335
2691SV * 3336SV *
2692new (SV *klass, SV *count_ = 0) 3337new (SV *klass, SV *count = 0)
2693 CODE: 3338 CODE:
2694{ 3339 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3340 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3341 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3342 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3343 OUTPUT:
2699} 3344 RETVAL
3345
3346# helper for Coro::Channel
3347SV *
3348_alloc (int count)
3349 CODE:
3350 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3351 OUTPUT:
2701 RETVAL 3352 RETVAL
2702 3353
2703SV * 3354SV *
2704count (SV *self) 3355count (SV *self)
… …
2713 adjust = 1 3364 adjust = 1
2714 CODE: 3365 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3366 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3367
2717void 3368void
2718down (SV *self) 3369down (...)
2719 CODE: 3370 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3371 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3372
3373void
3374wait (...)
3375 CODE:
3376 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3377
2722void 3378void
2723try (SV *self) 3379try (SV *self)
2724 PPCODE: 3380 PPCODE:
2725{ 3381{
… …
2737 XSRETURN_NO; 3393 XSRETURN_NO;
2738} 3394}
2739 3395
2740void 3396void
2741waiters (SV *self) 3397waiters (SV *self)
2742 CODE: 3398 PPCODE:
2743{ 3399{
2744 AV *av = (AV *)SvRV (self); 3400 AV *av = (AV *)SvRV (self);
3401 int wcount = AvFILLp (av) + 1 - 1;
2745 3402
2746 if (GIMME_V == G_SCALAR) 3403 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3404 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3405 else
2749 { 3406 {
2750 int i; 3407 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3408 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3409 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3410 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3411 }
2755} 3412}
2756 3413
3414MODULE = Coro::State PACKAGE = Coro::Signal
3415
3416SV *
3417new (SV *klass)
3418 CODE:
3419 RETVAL = sv_bless (
3420 coro_waitarray_new (aTHX_ 0),
3421 GvSTASH (CvGV (cv))
3422 );
3423 OUTPUT:
3424 RETVAL
3425
3426void
3427wait (...)
3428 CODE:
3429 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3430
3431void
3432broadcast (SV *self)
3433 CODE:
3434{
3435 AV *av = (AV *)SvRV (self);
3436 coro_signal_wake (aTHX_ av, AvFILLp (av));
3437}
3438
3439void
3440send (SV *self)
3441 CODE:
3442{
3443 AV *av = (AV *)SvRV (self);
3444
3445 if (AvFILLp (av))
3446 coro_signal_wake (aTHX_ av, 1);
3447 else
3448 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3449}
3450
3451IV
3452awaited (SV *self)
3453 CODE:
3454 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3455 OUTPUT:
3456 RETVAL
3457
3458
3459MODULE = Coro::State PACKAGE = Coro::AnyEvent
3460
3461BOOT:
3462 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3463
3464void
3465_schedule (...)
3466 CODE:
3467{
3468 static int incede;
3469
3470 api_cede_notself (aTHX);
3471
3472 ++incede;
3473 while (coro_nready >= incede && api_cede (aTHX))
3474 ;
3475
3476 sv_setsv (sv_activity, &PL_sv_undef);
3477 if (coro_nready >= incede)
3478 {
3479 PUSHMARK (SP);
3480 PUTBACK;
3481 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3482 }
3483
3484 --incede;
3485}
3486
3487
3488MODULE = Coro::State PACKAGE = Coro::AIO
3489
3490void
3491_register (char *target, char *proto, SV *req)
3492 CODE:
3493{
3494 CV *req_cv = coro_sv_2cv (aTHX_ req);
3495 /* newXSproto doesn't return the CV on 5.8 */
3496 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3497 sv_setpv ((SV *)slf_cv, proto);
3498 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3499}
3500

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