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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.338 by root, Sun Dec 7 15:33:21 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 */
171static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
172 181
173static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 184static SV *rv_diehook;
176static SV *rv_warnhook; 185static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
178 187
179/* async_pool helper stuff */ 188/* async_pool helper stuff */
180static SV *sv_pool_rss; 189static SV *sv_pool_rss;
181static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
182static 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;
183 196
184/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
185static SV *sv_activity; 198static SV *sv_activity;
186 199
187static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 229 int valgrind_id;
217#endif 230#endif
218 unsigned char flags; 231 unsigned char flags;
219} coro_cctx; 232} coro_cctx;
220 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
221enum { 238enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
230{ 247{
231 SV *defsv; 248 SV *defsv;
232 AV *defav; 249 AV *defav;
233 SV *errsv; 250 SV *errsv;
234 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
235#define VAR(name,type) type name; 253#define VAR(name,type) type name;
236# include "state.h" 254# include "state.h"
237#undef VAR 255#undef VAR
238} perl_slots; 256} perl_slots;
239 257
… …
242/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
243struct coro { 261struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 263 coro_cctx *cctx;
246 264
247 /* process data */ 265 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 267 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
251 269
270 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 275 void (*on_destroy)(pTHX_ struct coro *coro);
257 276
258 /* statistics */ 277 /* statistics */
259 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
260 279
261 /* coro process data */ 280 /* coro process data */
262 int prio; 281 int prio;
263 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
264 284
265 /* async_pool */ 285 /* async_pool */
266 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
267 289
268 /* linked list */ 290 /* linked list */
269 struct coro *next, *prev; 291 struct coro *next, *prev;
270}; 292};
271 293
272typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
274 296
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 */
275static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
276 301
277/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
278 303
279#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
285 310
286/* for Coro.pm */ 311/* for Coro.pm */
287static SV *coro_current; 312static SV *coro_current;
288static SV *coro_readyhook; 313static SV *coro_readyhook;
289static 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;
290static struct coro *coro_first; 316static struct coro *coro_first;
291#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
292 318
293/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
294 320
… …
320 get_hv (name, create); 346 get_hv (name, create);
321#endif 347#endif
322 return get_hv (name, create); 348 return get_hv (name, create);
323} 349}
324 350
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
325static AV * 412static AV *
326coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
327{ 414{
328 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
330 417
331 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 424#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 426 --AvFILLp (padlist);
340 427
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
343 430
344 return newpadlist; 431 return newpadlist;
345} 432}
346 433
347static void 434static void
348free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
349{ 436{
350 /* may be during global destruction */ 437 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
352 { 439 {
353 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
354 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
355 { 443 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
357 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 446 I32 j = AvFILLp (av);
359 SV *sv; 447
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 453 }
366 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
368 } 459 }
369} 460}
370 461
371static int 462static int
… …
380 471
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 473
383 return 0; 474 return 0;
384} 475}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 476
389static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 478 0, 0, 0, 0,
391 coro_cv_free 479 coro_cv_free
392}; 480};
393
394#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \
396 ? SvMAGIC (sv)->mg_type == type \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429 481
430/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
431static void 483static void
432get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
433{ 485{
… …
439 else 491 else
440 { 492 {
441#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
448#else 500#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 502#endif
451 } 503 }
452} 504}
453 505
454static void 506static void
… …
461 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);
462 514
463 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
464 516
465 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
467 519
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 521}
470 522
471/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
476 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
477 c->slot = 0; 529 c->slot = 0;
478 530
479 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
480 532
481 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
482 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
483 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
484 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
485 538
486 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
487 # include "state.h" 540 # include "state.h"
488 #undef VAR 541 #undef VAR
489 542
… …
501 } 554 }
502 555
503 PUTBACK; 556 PUTBACK;
504 } 557 }
505 558
506 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
507} 561}
508 562
509static void 563static void
510save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
511{ 565{
566 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
513 568
514 { 569 {
515 dSP; 570 dSP;
516 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
573 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
574 629
575 { 630 {
576 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
577 632
578 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
579 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
580 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
581 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
582 638
583 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
584 # include "state.h" 640 # include "state.h"
585 #undef VAR 641 #undef VAR
586 } 642 }
… …
591 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
594 */ 650 */
595#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
597#else 653#else
598static void 654static void
599coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
600{ 656{
601 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
664#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 721 Safefree (PL_retstack);
666#endif 722#endif
667} 723}
668 724
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
669static size_t 734static size_t
670coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
671{ 736{
672 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
673 738
674 if (coro->mainstack) 739 if (coro->mainstack)
675 { 740 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
680 { 742 {
681 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
682 744 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 745 #undef SYM
686 } 746 }
687 else 747 else
688 slot = coro->slot;
689
690 if (slot)
691 { 748 {
692 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 752 }
704 } 753 }
705 754
706 return rss; 755 return rss;
707} 756}
… …
720#endif 769#endif
721 770
722/* 771/*
723 * This overrides the default magic get method of %SIG elements. 772 * This overrides the default magic get method of %SIG elements.
724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 773 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
725 * and instead of tryign to save and restore the hash elements, we just provide 774 * and instead of trying to save and restore the hash elements, we just provide
726 * readback here. 775 * readback here.
727 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
728 * not expecting this to actually change the hook. This is a potential problem
729 * when a schedule happens then, but we ignore this.
730 */ 776 */
731static int 777static int
732coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 778coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
733{ 779{
734 const char *s = MgPV_nolen_const (mg); 780 const char *s = MgPV_nolen_const (mg);
… …
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788 834
789 if (svp) 835 if (svp)
790 { 836 {
791 SV *old = *svp; 837 SV *old = *svp;
792 *svp = newSVsv (sv); 838 *svp = SvOK (sv) ? newSVsv (sv) : 0;
793 SvREFCNT_dec (old); 839 SvREFCNT_dec (old);
794 return 0; 840 return 0;
795 } 841 }
796 } 842 }
797 843
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 855slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 856{
811 return 0; 857 return 0;
812} 858}
813 859
814static void 860static int
861slf_check_repeat (pTHX_ struct CoroSLF *frame)
862{
863 return 1;
864}
865
866static UNOP coro_setup_op;
867
868static void NOINLINE /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 869coro_setup (pTHX_ struct coro *coro)
816{ 870{
817 /* 871 /*
818 * emulate part of the perl startup here. 872 * emulate part of the perl startup here.
819 */ 873 */
… …
821 875
822 PL_runops = RUNOPS_DEFAULT; 876 PL_runops = RUNOPS_DEFAULT;
823 PL_curcop = &PL_compiling; 877 PL_curcop = &PL_compiling;
824 PL_in_eval = EVAL_NULL; 878 PL_in_eval = EVAL_NULL;
825 PL_comppad = 0; 879 PL_comppad = 0;
880 PL_comppad_name = 0;
881 PL_comppad_name_fill = 0;
882 PL_comppad_name_floor = 0;
826 PL_curpm = 0; 883 PL_curpm = 0;
827 PL_curpad = 0; 884 PL_curpad = 0;
828 PL_localizing = 0; 885 PL_localizing = 0;
829 PL_dirty = 0; 886 PL_dirty = 0;
830 PL_restartop = 0; 887 PL_restartop = 0;
831#if PERL_VERSION_ATLEAST (5,10,0) 888#if PERL_VERSION_ATLEAST (5,10,0)
832 PL_parser = 0; 889 PL_parser = 0;
833#endif 890#endif
891 PL_hints = 0;
834 892
835 /* recreate the die/warn hooks */ 893 /* recreate the die/warn hooks */
836 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 894 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
837 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 895 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
838 896
839 GvSV (PL_defgv) = newSV (0); 897 GvSV (PL_defgv) = newSV (0);
840 GvAV (PL_defgv) = coro->args; coro->args = 0; 898 GvAV (PL_defgv) = coro->args; coro->args = 0;
841 GvSV (PL_errgv) = newSV (0); 899 GvSV (PL_errgv) = newSV (0);
842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 900 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
901 GvHV (PL_hintgv) = 0;
843 PL_rs = newSVsv (GvSV (irsgv)); 902 PL_rs = newSVsv (GvSV (irsgv));
844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 903 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
845 904
846 { 905 {
847 dSP; 906 dSP;
848 UNOP myop; 907 UNOP myop;
849 908
850 Zero (&myop, 1, UNOP); 909 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 910 myop.op_next = Nullop;
911 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 912 myop.op_flags = OPf_WANT_VOID;
853 913
854 PUSHMARK (SP); 914 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 915 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 916 PUTBACK;
857 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 919 }
861 920
862 /* this newly created coroutine might be run on an existing cctx which most 921 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 922 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 923 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 924 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 925 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
867}
868 926
927 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
928 coro_setup_op.op_next = PL_op;
929 coro_setup_op.op_type = OP_ENTERSUB;
930 coro_setup_op.op_ppaddr = pp_slf;
931 /* no flags etc. required, as an init function won't be called */
932
933 PL_op = (OP *)&coro_setup_op;
934
935 /* copy throw, in case it was set before coro_setup */
936 CORO_THROW = coro->except;
937}
938
869static void 939static void
870coro_destruct (pTHX_ struct coro *coro) 940coro_unwind_stacks (pTHX)
871{ 941{
872 if (!IN_DESTRUCT) 942 if (!IN_DESTRUCT)
873 { 943 {
874 /* restore all saved variables and stuff */ 944 /* restore all saved variables and stuff */
875 LEAVE_SCOPE (0); 945 LEAVE_SCOPE (0);
… …
883 POPSTACK_TO (PL_mainstack); 953 POPSTACK_TO (PL_mainstack);
884 954
885 /* unwind main stack */ 955 /* unwind main stack */
886 dounwind (-1); 956 dounwind (-1);
887 } 957 }
958}
959
960static void
961coro_destruct_perl (pTHX_ struct coro *coro)
962{
963 coro_unwind_stacks (aTHX);
888 964
889 SvREFCNT_dec (GvSV (PL_defgv)); 965 SvREFCNT_dec (GvSV (PL_defgv));
890 SvREFCNT_dec (GvAV (PL_defgv)); 966 SvREFCNT_dec (GvAV (PL_defgv));
891 SvREFCNT_dec (GvSV (PL_errgv)); 967 SvREFCNT_dec (GvSV (PL_errgv));
892 SvREFCNT_dec (PL_defoutgv); 968 SvREFCNT_dec (PL_defoutgv);
893 SvREFCNT_dec (PL_rs); 969 SvREFCNT_dec (PL_rs);
894 SvREFCNT_dec (GvSV (irsgv)); 970 SvREFCNT_dec (GvSV (irsgv));
971 SvREFCNT_dec (GvHV (PL_hintgv));
895 972
896 SvREFCNT_dec (PL_diehook); 973 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 974 SvREFCNT_dec (PL_warnhook);
898 975
899 SvREFCNT_dec (coro->saved_deffh); 976 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 977 SvREFCNT_dec (coro->rouse_cb);
978 SvREFCNT_dec (coro->invoke_cb);
979 SvREFCNT_dec (coro->invoke_av);
901 980
902 coro_destruct_stacks (aTHX); 981 coro_destruct_stacks (aTHX);
903} 982}
904 983
905INLINE void 984INLINE void
… …
915static int 994static int
916runops_trace (pTHX) 995runops_trace (pTHX)
917{ 996{
918 COP *oldcop = 0; 997 COP *oldcop = 0;
919 int oldcxix = -2; 998 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 999
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1000 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 1001 {
925 PERL_ASYNC_CHECK (); 1002 PERL_ASYNC_CHECK ();
926 1003
927 if (cctx->flags & CC_TRACE_ALL) 1004 if (cctx_current->flags & CC_TRACE_ALL)
928 { 1005 {
929 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1006 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
930 { 1007 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1008 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 1009 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 1010 AV *av = newAV (); /* return values */
934 SV **cb; 1011 SV **cb;
… …
971 1048
972 if (PL_curcop != &PL_compiling) 1049 if (PL_curcop != &PL_compiling)
973 { 1050 {
974 SV **cb; 1051 SV **cb;
975 1052
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1053 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
977 { 1054 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1055 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1056
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1057 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1058 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1059 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1060 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1061 SV *fullname = sv_2mortal (newSV (0));
986 1062
987 if (isGV (gv)) 1063 if (isGV (gv))
… …
992 SAVETMPS; 1068 SAVETMPS;
993 EXTEND (SP, 3); 1069 EXTEND (SP, 3);
994 PUSHMARK (SP); 1070 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1071 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1072 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1073 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1074 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1075 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1076 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1077 SPAGAIN;
1002 FREETMPS; 1078 FREETMPS;
… …
1005 } 1081 }
1006 1082
1007 oldcxix = cxstack_ix; 1083 oldcxix = cxstack_ix;
1008 } 1084 }
1009 1085
1010 if (cctx->flags & CC_TRACE_LINE) 1086 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1087 {
1012 dSP; 1088 dSP;
1013 1089
1014 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1091 ENTER;
… …
1034 1110
1035 TAINT_NOT; 1111 TAINT_NOT;
1036 return 0; 1112 return 0;
1037} 1113}
1038 1114
1115static struct CoroSLF cctx_ssl_frame;
1116
1039static void 1117static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1118slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1119{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1120 ta->prev = 0;
1044} 1121}
1045 1122
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1123static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1124slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1125{
1049/* also initialises PL_top_env */ 1126 *frame = cctx_ssl_frame;
1127
1128 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1129}
1130
1131/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1132static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1133cctx_prepare (pTHX)
1052{ 1134{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1135 PL_top_env = &PL_start_env;
1057 1136
1058 if (cctx->flags & CC_TRACE) 1137 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1138 PL_runops = runops_trace;
1060 1139
1061 Zero (&myop, 1, UNOP); 1140 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1141 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1142 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1143 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1144
1065 PUSHMARK (SP); 1145 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1146 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1147
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1148 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1149 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1150}
1074 1151
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1152/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1153INLINE void
1077transfer_tail (pTHX) 1154transfer_tail (pTHX)
1078{ 1155{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1156 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093} 1157}
1094 1158
1095/* 1159/*
1096 * this is a _very_ stripped down perl interpreter ;) 1160 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1161 */
… …
1109 /* normally we would need to skip the entersub here */ 1173 /* normally we would need to skip the entersub here */
1110 /* not doing so will re-execute it, which is exactly what we want */ 1174 /* not doing so will re-execute it, which is exactly what we want */
1111 /* PL_nop = PL_nop->op_next */ 1175 /* PL_nop = PL_nop->op_next */
1112 1176
1113 /* inject a fake subroutine call to cctx_init */ 1177 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1178 cctx_prepare (aTHX);
1115 1179
1116 /* cctx_run is the alternative tail of transfer() */ 1180 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1181 transfer_tail (aTHX);
1119 1182
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1183 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1184 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1185 perl_run (PL_curinterp);
1186 /*
1187 * Unfortunately, there is no way to get at the return values of the
1188 * coro body here, as perl_run destroys these
1189 */
1123 1190
1124 /* 1191 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1192 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1193 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1194 * reason for perl_run to return. We try to exit by jumping to the
1128 * bootstrap-time "top" top_env, as we cannot restore the "main" 1195 * bootstrap-time "top" top_env, as we cannot restore the "main"
1129 * coroutine as Coro has no such concept 1196 * coroutine as Coro has no such concept.
1197 * This actually isn't valid with the pthread backend, but OSes requiring
1198 * that backend are too broken to do it in a standards-compliant way.
1130 */ 1199 */
1131 PL_top_env = main_top_env; 1200 PL_top_env = main_top_env;
1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1201 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 } 1202 }
1134} 1203}
… …
1211cctx_destroy (coro_cctx *cctx) 1280cctx_destroy (coro_cctx *cctx)
1212{ 1281{
1213 if (!cctx) 1282 if (!cctx)
1214 return; 1283 return;
1215 1284
1285 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1286
1216 --cctx_count; 1287 --cctx_count;
1217 coro_destroy (&cctx->cctx); 1288 coro_destroy (&cctx->cctx);
1218 1289
1219 /* coro_transfer creates new, empty cctx's */ 1290 /* coro_transfer creates new, empty cctx's */
1220 if (cctx->sptr) 1291 if (cctx->sptr)
… …
1278/** coroutine switching *****************************************************/ 1349/** coroutine switching *****************************************************/
1279 1350
1280static void 1351static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1352transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1353{
1354 /* TODO: throwing up here is considered harmful */
1355
1283 if (expect_true (prev != next)) 1356 if (expect_true (prev != next))
1284 { 1357 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1358 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1359 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1287 1360
1288 if (expect_false (next->flags & CF_RUNNING)) 1361 if (expect_false (next->flags & CF_RUNNING))
1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1362 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1290 1363
1291 if (expect_false (next->flags & CF_DESTROYED)) 1364 if (expect_false (next->flags & CF_DESTROYED))
… …
1297#endif 1370#endif
1298 } 1371 }
1299} 1372}
1300 1373
1301/* always use the TRANSFER macro */ 1374/* always use the TRANSFER macro */
1302static void NOINLINE 1375static void NOINLINE /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1376transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1377{
1305 dSTACKLEVEL; 1378 dSTACKLEVEL;
1306 1379
1307 /* sometimes transfer is only called to set idle_sp */ 1380 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1381 if (expect_false (!prev))
1309 { 1382 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1383 cctx_current->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1384 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1385 }
1313 else if (expect_true (prev != next)) 1386 else if (expect_true (prev != next))
1314 { 1387 {
1315 coro_cctx *prev__cctx; 1388 coro_cctx *cctx_prev;
1316 1389
1317 if (expect_false (prev->flags & CF_NEW)) 1390 if (expect_false (prev->flags & CF_NEW))
1318 { 1391 {
1319 /* create a new empty/source context */ 1392 /* create a new empty/source context */
1320 prev->cctx = cctx_new_empty ();
1321 prev->flags &= ~CF_NEW; 1393 prev->flags &= ~CF_NEW;
1322 prev->flags |= CF_RUNNING; 1394 prev->flags |= CF_RUNNING;
1323 } 1395 }
1324 1396
1325 prev->flags &= ~CF_RUNNING; 1397 prev->flags &= ~CF_RUNNING;
… …
1336 coro_setup (aTHX_ next); 1408 coro_setup (aTHX_ next);
1337 } 1409 }
1338 else 1410 else
1339 load_perl (aTHX_ next); 1411 load_perl (aTHX_ next);
1340 1412
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */ 1413 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1414 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1415 cctx_current->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1416 && !(cctx_current->flags & CC_TRACE)
1347 && !force_cctx 1417 && !force_cctx
1348 )) 1418 ))
1349 { 1419 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1420 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1421 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1352 1422
1353 prev->cctx = 0;
1354
1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1423 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1424 /* without this the next cctx_get might destroy the running cctx while still in use */
1357 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1425 if (expect_false (CCTX_EXPIRED (cctx_current)))
1358 if (!next->cctx) 1426 if (expect_true (!next->cctx))
1359 next->cctx = cctx_get (aTHX); 1427 next->cctx = cctx_get (aTHX);
1360 1428
1361 cctx_put (prev__cctx); 1429 cctx_put (cctx_current);
1362 } 1430 }
1431 else
1432 prev->cctx = cctx_current;
1363 1433
1364 ++next->usecount; 1434 ++next->usecount;
1365 1435
1366 if (expect_true (!next->cctx)) 1436 cctx_prev = cctx_current;
1367 next->cctx = cctx_get (aTHX); 1437 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1368 1438
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1439 next->cctx = 0;
1370 transfer_next = next;
1371 1440
1372 if (expect_false (prev__cctx != next->cctx)) 1441 if (expect_false (cctx_prev != cctx_current))
1373 { 1442 {
1374 prev__cctx->top_env = PL_top_env; 1443 cctx_prev->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1444 PL_top_env = cctx_current->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1445 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1377 } 1446 }
1378 1447
1379 transfer_tail (aTHX); 1448 transfer_tail (aTHX);
1380 } 1449 }
1381} 1450}
… …
1403 --coro_nready; 1472 --coro_nready;
1404 } 1473 }
1405 else 1474 else
1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1475 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1407 1476
1408 if (coro->mainstack && coro->mainstack != main_mainstack) 1477 if (coro->mainstack
1478 && coro->mainstack != main_mainstack
1479 && coro->slot
1480 && !PL_dirty)
1409 { 1481 {
1410 struct coro temp; 1482 struct coro temp;
1411 1483
1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1484 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1413 1485
1414 save_perl (aTHX_ &temp); 1486 save_perl (aTHX_ &temp);
1415 load_perl (aTHX_ coro); 1487 load_perl (aTHX_ coro);
1416 1488
1417 coro_destruct (aTHX_ coro); 1489 coro_destruct_perl (aTHX_ coro);
1418 1490
1419 load_perl (aTHX_ &temp); 1491 load_perl (aTHX_ &temp);
1420 1492
1421 coro->slot = 0; 1493 coro->slot = 0;
1422 } 1494 }
1423 1495
1424 cctx_destroy (coro->cctx); 1496 cctx_destroy (coro->cctx);
1497 SvREFCNT_dec (coro->startcv);
1425 SvREFCNT_dec (coro->args); 1498 SvREFCNT_dec (coro->args);
1499 SvREFCNT_dec (CORO_THROW);
1426 1500
1427 if (coro->next) coro->next->prev = coro->prev; 1501 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1502 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1503 if (coro == coro_first) coro_first = coro->next;
1430 1504
… …
1484 1558
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1559 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1560 TRANSFER (ta, 1);
1487} 1561}
1488 1562
1563/*****************************************************************************/
1564/* gensub: simple closure generation utility */
1565
1566#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1567
1568/* create a closure from XS, returns a code reference */
1569/* the arg can be accessed via GENSUB_ARG from the callback */
1570/* the callback must use dXSARGS/XSRETURN */
1571static SV *
1572gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1573{
1574 CV *cv = (CV *)newSV (0);
1575
1576 sv_upgrade ((SV *)cv, SVt_PVCV);
1577
1578 CvANON_on (cv);
1579 CvISXSUB_on (cv);
1580 CvXSUB (cv) = xsub;
1581 GENSUB_ARG = arg;
1582
1583 return newRV_noinc ((SV *)cv);
1584}
1585
1489/** Coro ********************************************************************/ 1586/** Coro ********************************************************************/
1490 1587
1491static void 1588INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1589coro_enq (pTHX_ struct coro *coro)
1493{ 1590{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1591 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1592}
1496 1593
1497static SV * 1594INLINE SV *
1498coro_deq (pTHX) 1595coro_deq (pTHX)
1499{ 1596{
1500 int prio; 1597 int prio;
1501 1598
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1599 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1511{ 1608{
1512 struct coro *coro; 1609 struct coro *coro;
1513 SV *sv_hook; 1610 SV *sv_hook;
1514 void (*xs_hook)(void); 1611 void (*xs_hook)(void);
1515 1612
1516 if (SvROK (coro_sv))
1517 coro_sv = SvRV (coro_sv);
1518
1519 coro = SvSTATE (coro_sv); 1613 coro = SvSTATE (coro_sv);
1520 1614
1521 if (coro->flags & CF_READY) 1615 if (coro->flags & CF_READY)
1522 return 0; 1616 return 0;
1523 1617
1524 coro->flags |= CF_READY; 1618 coro->flags |= CF_READY;
1525 1619
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1620 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1621 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1622
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1623 coro_enq (aTHX_ coro);
1530 ++coro_nready; 1624 ++coro_nready;
1531 1625
1532 if (sv_hook) 1626 if (sv_hook)
1533 { 1627 {
1534 dSP; 1628 dSP;
… …
1536 ENTER; 1630 ENTER;
1537 SAVETMPS; 1631 SAVETMPS;
1538 1632
1539 PUSHMARK (SP); 1633 PUSHMARK (SP);
1540 PUTBACK; 1634 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD); 1635 call_sv (sv_hook, G_VOID | G_DISCARD);
1542 SPAGAIN;
1543 1636
1544 FREETMPS; 1637 FREETMPS;
1545 LEAVE; 1638 LEAVE;
1546 } 1639 }
1547 1640
… …
1555api_is_ready (pTHX_ SV *coro_sv) 1648api_is_ready (pTHX_ SV *coro_sv)
1556{ 1649{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1650 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1651}
1559 1652
1653/* expects to own a reference to next->hv */
1560INLINE void 1654INLINE void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1655prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1562{ 1656{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;)
1566 {
1567 next_sv = coro_deq (aTHX);
1568
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv))
1571 {
1572 dSP;
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1580 SPAGAIN;
1581
1582 FREETMPS;
1583 LEAVE;
1584 continue;
1585 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current); 1657 SV *prev_sv = SvRV (coro_current);
1658
1603 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1660 ta->next = next;
1661
1604 TRANSFER_CHECK (*ta); 1662 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1663
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv); 1664 SvRV_set (coro_current, (SV *)next->hv);
1608 1665
1609 free_coro_mortal (aTHX); 1666 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv; 1667 coro_mortal = prev_sv;
1611} 1668}
1612 1669
1670static void
1671prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1672{
1673 for (;;)
1674 {
1675 SV *next_sv = coro_deq (aTHX);
1676
1677 if (expect_true (next_sv))
1678 {
1679 struct coro *next = SvSTATE_hv (next_sv);
1680
1681 /* cannot transfer to destroyed coros, skip and look for next */
1682 if (expect_false (next->flags & CF_DESTROYED))
1683 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1684 else
1685 {
1686 next->flags &= ~CF_READY;
1687 --coro_nready;
1688
1689 prepare_schedule_to (aTHX_ ta, next);
1690 break;
1691 }
1692 }
1693 else
1694 {
1695 /* nothing to schedule: call the idle handler */
1696 if (SvROK (sv_idle)
1697 && SvOBJECT (SvRV (sv_idle)))
1698 {
1699 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1700 api_ready (aTHX_ SvRV (sv_idle));
1701 --coro_nready;
1702 }
1703 else
1704 {
1705 dSP;
1706
1707 ENTER;
1708 SAVETMPS;
1709
1710 PUSHMARK (SP);
1711 PUTBACK;
1712 call_sv (sv_idle, G_VOID | G_DISCARD);
1713
1714 FREETMPS;
1715 LEAVE;
1716 }
1717 }
1718 }
1719}
1720
1613INLINE void 1721INLINE void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 1722prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 1723{
1616 api_ready (aTHX_ coro_current); 1724 api_ready (aTHX_ coro_current);
1617 prepare_schedule (aTHX_ ta); 1725 prepare_schedule (aTHX_ ta);
… …
1636{ 1744{
1637 struct coro_transfer_args ta; 1745 struct coro_transfer_args ta;
1638 1746
1639 prepare_schedule (aTHX_ &ta); 1747 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 1748 TRANSFER (ta, 1);
1749}
1750
1751static void
1752api_schedule_to (pTHX_ SV *coro_sv)
1753{
1754 struct coro_transfer_args ta;
1755 struct coro *next = SvSTATE (coro_sv);
1756
1757 SvREFCNT_inc_NN (coro_sv);
1758 prepare_schedule_to (aTHX_ &ta, next);
1641} 1759}
1642 1760
1643static int 1761static int
1644api_cede (pTHX) 1762api_cede (pTHX)
1645{ 1763{
… …
1674static void 1792static void
1675api_trace (pTHX_ SV *coro_sv, int flags) 1793api_trace (pTHX_ SV *coro_sv, int flags)
1676{ 1794{
1677 struct coro *coro = SvSTATE (coro_sv); 1795 struct coro *coro = SvSTATE (coro_sv);
1678 1796
1797 if (coro->flags & CF_RUNNING)
1798 croak ("cannot enable tracing on a running coroutine, caught");
1799
1679 if (flags & CC_TRACE) 1800 if (flags & CC_TRACE)
1680 { 1801 {
1681 if (!coro->cctx) 1802 if (!coro->cctx)
1682 coro->cctx = cctx_new_run (); 1803 coro->cctx = cctx_new_run ();
1683 else if (!(coro->cctx->flags & CC_TRACE)) 1804 else if (!(coro->cctx->flags & CC_TRACE))
1684 croak ("cannot enable tracing on coroutine with custom stack,"); 1805 croak ("cannot enable tracing on coroutine with custom stack, caught");
1685 1806
1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1807 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1687 } 1808 }
1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1809 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1689 { 1810 {
… …
1692 if (coro->flags & CF_RUNNING) 1813 if (coro->flags & CF_RUNNING)
1693 PL_runops = RUNOPS_DEFAULT; 1814 PL_runops = RUNOPS_DEFAULT;
1694 else 1815 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 1816 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 1817 }
1818}
1819
1820static void
1821coro_call_on_destroy (pTHX_ struct coro *coro)
1822{
1823 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1824 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1825
1826 if (on_destroyp)
1827 {
1828 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1829
1830 while (AvFILLp (on_destroy) >= 0)
1831 {
1832 dSP; /* don't disturb outer sp */
1833 SV *cb = av_pop (on_destroy);
1834
1835 PUSHMARK (SP);
1836
1837 if (statusp)
1838 {
1839 int i;
1840 AV *status = (AV *)SvRV (*statusp);
1841 EXTEND (SP, AvFILLp (status) + 1);
1842
1843 for (i = 0; i <= AvFILLp (status); ++i)
1844 PUSHs (AvARRAY (status)[i]);
1845 }
1846
1847 PUTBACK;
1848 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1849 }
1850 }
1851}
1852
1853static void
1854slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1855{
1856 int i;
1857 HV *hv = (HV *)SvRV (coro_current);
1858 AV *av = newAV ();
1859
1860 av_extend (av, items - 1);
1861 for (i = 0; i < items; ++i)
1862 av_push (av, SvREFCNT_inc_NN (arg [i]));
1863
1864 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1865
1866 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1867 api_ready (aTHX_ sv_manager);
1868
1869 frame->prepare = prepare_schedule;
1870 frame->check = slf_check_repeat;
1871
1872 /* as a minor optimisation, we could unwind all stacks here */
1873 /* but that puts extra pressure on pp_slf, and is not worth much */
1874 /*coro_unwind_stacks (aTHX);*/
1875}
1876
1877/*****************************************************************************/
1878/* async pool handler */
1879
1880static int
1881slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = (struct coro *)frame->data;
1885
1886 if (!coro->invoke_cb)
1887 return 1; /* loop till we have invoke */
1888 else
1889 {
1890 hv_store (hv, "desc", sizeof ("desc") - 1,
1891 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1892
1893 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1894
1895 {
1896 dSP;
1897 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1898 PUTBACK;
1899 }
1900
1901 SvREFCNT_dec (GvAV (PL_defgv));
1902 GvAV (PL_defgv) = coro->invoke_av;
1903 coro->invoke_av = 0;
1904
1905 return 0;
1906 }
1907}
1908
1909static void
1910slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 HV *hv = (HV *)SvRV (coro_current);
1913 struct coro *coro = SvSTATE_hv ((SV *)hv);
1914
1915 if (expect_true (coro->saved_deffh))
1916 {
1917 /* subsequent iteration */
1918 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1919 coro->saved_deffh = 0;
1920
1921 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1922 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1923 {
1924 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1925 coro->invoke_av = newAV ();
1926
1927 frame->prepare = prepare_nop;
1928 }
1929 else
1930 {
1931 av_clear (GvAV (PL_defgv));
1932 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1933
1934 coro->prio = 0;
1935
1936 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1937 api_trace (aTHX_ coro_current, 0);
1938
1939 frame->prepare = prepare_schedule;
1940 av_push (av_async_pool, SvREFCNT_inc (hv));
1941 }
1942 }
1943 else
1944 {
1945 /* first iteration, simply fall through */
1946 frame->prepare = prepare_nop;
1947 }
1948
1949 frame->check = slf_check_pool_handler;
1950 frame->data = (void *)coro;
1951}
1952
1953/*****************************************************************************/
1954/* rouse callback */
1955
1956#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1957
1958static void
1959coro_rouse_callback (pTHX_ CV *cv)
1960{
1961 dXSARGS;
1962 SV *data = (SV *)GENSUB_ARG;
1963
1964 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1965 {
1966 /* first call, set args */
1967 AV *av = newAV ();
1968 SV *coro = SvRV (data);
1969
1970 SvRV_set (data, (SV *)av);
1971 api_ready (aTHX_ coro);
1972 SvREFCNT_dec (coro);
1973
1974 /* better take a full copy of the arguments */
1975 while (items--)
1976 av_store (av, items, newSVsv (ST (items)));
1977 }
1978
1979 XSRETURN_EMPTY;
1980}
1981
1982static int
1983slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1984{
1985 SV *data = (SV *)frame->data;
1986
1987 if (CORO_THROW)
1988 return 0;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 return 1;
1992
1993 /* now push all results on the stack */
1994 {
1995 dSP;
1996 AV *av = (AV *)SvRV (data);
1997 int i;
1998
1999 EXTEND (SP, AvFILLp (av) + 1);
2000 for (i = 0; i <= AvFILLp (av); ++i)
2001 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2002
2003 /* we have stolen the elements, so ste length to zero and free */
2004 AvFILLp (av) = -1;
2005 av_undef (av);
2006
2007 PUTBACK;
2008 }
2009
2010 return 0;
2011}
2012
2013static void
2014slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2015{
2016 SV *cb;
2017
2018 if (items)
2019 cb = arg [0];
2020 else
2021 {
2022 struct coro *coro = SvSTATE_current;
2023
2024 if (!coro->rouse_cb)
2025 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2026
2027 cb = sv_2mortal (coro->rouse_cb);
2028 coro->rouse_cb = 0;
2029 }
2030
2031 if (!SvROK (cb)
2032 || SvTYPE (SvRV (cb)) != SVt_PVCV
2033 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2034 croak ("Coro::rouse_wait called with illegal callback argument,");
2035
2036 {
2037 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2038 SV *data = (SV *)GENSUB_ARG;
2039
2040 frame->data = (void *)data;
2041 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2042 frame->check = slf_check_rouse_wait;
2043 }
2044}
2045
2046static SV *
2047coro_new_rouse_cb (pTHX)
2048{
2049 HV *hv = (HV *)SvRV (coro_current);
2050 struct coro *coro = SvSTATE_hv (hv);
2051 SV *data = newRV_inc ((SV *)hv);
2052 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2053
2054 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2055 SvREFCNT_dec (data); /* magicext increases the refcount */
2056
2057 SvREFCNT_dec (coro->rouse_cb);
2058 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2059
2060 return cb;
2061}
2062
2063/*****************************************************************************/
2064/* schedule-like-function opcode (SLF) */
2065
2066static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2067static const CV *slf_cv;
2068static SV **slf_argv;
2069static int slf_argc, slf_arga; /* count, allocated */
2070static I32 slf_ax; /* top of stack, for restore */
2071
2072/* this restores the stack in the case we patched the entersub, to */
2073/* recreate the stack frame as perl will on following calls */
2074/* since entersub cleared the stack */
2075static OP *
2076pp_restore (pTHX)
2077{
2078 int i;
2079 SV **SP = PL_stack_base + slf_ax;
2080
2081 PUSHMARK (SP);
2082
2083 EXTEND (SP, slf_argc + 1);
2084
2085 for (i = 0; i < slf_argc; ++i)
2086 PUSHs (sv_2mortal (slf_argv [i]));
2087
2088 PUSHs ((SV *)CvGV (slf_cv));
2089
2090 RETURNOP (slf_restore.op_first);
2091}
2092
2093static void
2094slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2095{
2096 SV **arg = (SV **)slf_frame.data;
2097
2098 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2099}
2100
2101static void
2102slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2103{
2104 if (items != 2)
2105 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2106
2107 frame->prepare = slf_prepare_transfer;
2108 frame->check = slf_check_nop;
2109 frame->data = (void *)arg; /* let's hope it will stay valid */
2110}
2111
2112static void
2113slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2114{
2115 frame->prepare = prepare_schedule;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2121{
2122 struct coro *next = (struct coro *)slf_frame.data;
2123
2124 SvREFCNT_inc_NN (next->hv);
2125 prepare_schedule_to (aTHX_ ta, next);
2126}
2127
2128static void
2129slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (!items)
2132 croak ("Coro::schedule_to expects a coroutine argument, caught");
2133
2134 frame->data = (void *)SvSTATE (arg [0]);
2135 frame->prepare = slf_prepare_schedule_to;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 api_ready (aTHX_ SvRV (coro_current));
2143
2144 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2145}
2146
2147static void
2148slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 frame->prepare = prepare_cede;
2151 frame->check = slf_check_nop;
2152}
2153
2154static void
2155slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 frame->prepare = prepare_cede_notself;
2158 frame->check = slf_check_nop;
2159}
2160
2161/*
2162 * these not obviously related functions are all rolled into one
2163 * function to increase chances that they all will call transfer with the same
2164 * stack offset
2165 * SLF stands for "schedule-like-function".
2166 */
2167static OP *
2168pp_slf (pTHX)
2169{
2170 I32 checkmark; /* mark SP to see how many elements check has pushed */
2171
2172 /* set up the slf frame, unless it has already been set-up */
2173 /* the latter happens when a new coro has been started */
2174 /* or when a new cctx was attached to an existing coroutine */
2175 if (expect_true (!slf_frame.prepare))
2176 {
2177 /* first iteration */
2178 dSP;
2179 SV **arg = PL_stack_base + TOPMARK + 1;
2180 int items = SP - arg; /* args without function object */
2181 SV *gv = *sp;
2182
2183 /* do a quick consistency check on the "function" object, and if it isn't */
2184 /* for us, divert to the real entersub */
2185 if (SvTYPE (gv) != SVt_PVGV
2186 || !GvCV (gv)
2187 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2188 return PL_ppaddr[OP_ENTERSUB](aTHX);
2189
2190 if (!(PL_op->op_flags & OPf_STACKED))
2191 {
2192 /* ampersand-form of call, use @_ instead of stack */
2193 AV *av = GvAV (PL_defgv);
2194 arg = AvARRAY (av);
2195 items = AvFILLp (av) + 1;
2196 }
2197
2198 /* now call the init function, which needs to set up slf_frame */
2199 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2200 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2201
2202 /* pop args */
2203 SP = PL_stack_base + POPMARK;
2204
2205 PUTBACK;
2206 }
2207
2208 /* now that we have a slf_frame, interpret it! */
2209 /* we use a callback system not to make the code needlessly */
2210 /* complicated, but so we can run multiple perl coros from one cctx */
2211
2212 do
2213 {
2214 struct coro_transfer_args ta;
2215
2216 slf_frame.prepare (aTHX_ &ta);
2217 TRANSFER (ta, 0);
2218
2219 checkmark = PL_stack_sp - PL_stack_base;
2220 }
2221 while (slf_frame.check (aTHX_ &slf_frame));
2222
2223 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2224
2225 /* exception handling */
2226 if (expect_false (CORO_THROW))
2227 {
2228 SV *exception = sv_2mortal (CORO_THROW);
2229
2230 CORO_THROW = 0;
2231 sv_setsv (ERRSV, exception);
2232 croak (0);
2233 }
2234
2235 /* return value handling - mostly like entersub */
2236 /* make sure we put something on the stack in scalar context */
2237 if (GIMME_V == G_SCALAR)
2238 {
2239 dSP;
2240 SV **bot = PL_stack_base + checkmark;
2241
2242 if (sp == bot) /* too few, push undef */
2243 bot [1] = &PL_sv_undef;
2244 else if (sp != bot + 1) /* too many, take last one */
2245 bot [1] = *sp;
2246
2247 SP = bot + 1;
2248
2249 PUTBACK;
2250 }
2251
2252 return NORMAL;
2253}
2254
2255static void
2256api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2257{
2258 int i;
2259 SV **arg = PL_stack_base + ax;
2260 int items = PL_stack_sp - arg + 1;
2261
2262 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2263
2264 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2265 && PL_op->op_ppaddr != pp_slf)
2266 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2267
2268 CvFLAGS (cv) |= CVf_SLF;
2269 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2270 slf_cv = cv;
2271
2272 /* we patch the op, and then re-run the whole call */
2273 /* we have to put the same argument on the stack for this to work */
2274 /* and this will be done by pp_restore */
2275 slf_restore.op_next = (OP *)&slf_restore;
2276 slf_restore.op_type = OP_CUSTOM;
2277 slf_restore.op_ppaddr = pp_restore;
2278 slf_restore.op_first = PL_op;
2279
2280 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2281
2282 if (PL_op->op_flags & OPf_STACKED)
2283 {
2284 if (items > slf_arga)
2285 {
2286 slf_arga = items;
2287 free (slf_argv);
2288 slf_argv = malloc (slf_arga * sizeof (SV *));
2289 }
2290
2291 slf_argc = items;
2292
2293 for (i = 0; i < items; ++i)
2294 slf_argv [i] = SvREFCNT_inc (arg [i]);
2295 }
2296 else
2297 slf_argc = 0;
2298
2299 PL_op->op_ppaddr = pp_slf;
2300 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2301
2302 PL_op = (OP *)&slf_restore;
1697} 2303}
1698 2304
1699/*****************************************************************************/ 2305/*****************************************************************************/
1700/* PerlIO::cede */ 2306/* PerlIO::cede */
1701 2307
… …
1770 PerlIOBuf_get_cnt, 2376 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 2377 PerlIOBuf_set_ptrcnt,
1772}; 2378};
1773 2379
1774/*****************************************************************************/ 2380/*****************************************************************************/
2381/* Coro::Semaphore & Coro::Signal */
1775 2382
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 2383static SV *
1787pp_restore (pTHX) 2384coro_waitarray_new (pTHX_ int count)
1788{ 2385{
1789 dSP; 2386 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2387 AV *av = newAV ();
2388 SV **ary;
1790 2389
1791 PUSHMARK (SP); 2390 /* unfortunately, building manually saves memory */
2391 Newx (ary, 2, SV *);
2392 AvALLOC (av) = ary;
2393#if PERL_VERSION_ATLEAST (5,10,0)
2394 AvARRAY (av) = ary;
2395#else
2396 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2397 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2398 SvPVX ((SV *)av) = (char *)ary;
2399#endif
2400 AvMAX (av) = 1;
2401 AvFILLp (av) = 0;
2402 ary [0] = newSViv (count);
1792 2403
1793 EXTEND (SP, 3); 2404 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 2405}
1801 2406
1802static void 2407/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 2408
1808static void 2409static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 2410coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 2411{
1981 SV *count_sv = AvARRAY (av)[0]; 2412 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 2413 IV count = SvIVX (count_sv);
1983 2414
1984 count += adjust; 2415 count += adjust;
1985 SvIVX (count_sv) = count; 2416 SvIVX (count_sv) = count;
1986 2417
1987 /* now wake up as many waiters as possible */ 2418 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 2419 while (count > 0 && AvFILLp (av) > 0)
1989 { 2420 {
1990 SV *cb; 2421 SV *cb;
1991 2422
1992 /* swap first two elements so we can shift a waiter */ 2423 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 2424 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 2425 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 2426 cb = av_shift (av);
1996 2427
1997 if (SvOBJECT (cb)) 2428 if (SvOBJECT (cb))
2429 {
1998 api_ready (aTHX_ cb); 2430 api_ready (aTHX_ cb);
1999 else 2431 --count;
2000 croak ("callbacks not yet supported"); 2432 }
2433 else if (SvTYPE (cb) == SVt_PVCV)
2434 {
2435 dSP;
2436 PUSHMARK (SP);
2437 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2438 PUTBACK;
2439 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2440 }
2001 2441
2002 SvREFCNT_dec (cb); 2442 SvREFCNT_dec (cb);
2003
2004 --count;
2005 } 2443 }
2006} 2444}
2007 2445
2008static void 2446static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2447coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{ 2448{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 2449 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 2450 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2013} 2451}
2014 2452
2015static int 2453static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2454slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 2455{
2018 AV *av = (AV *)frame->data; 2456 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 2457 SV *count_sv = AvARRAY (av)[0];
2020 2458
2459 /* if we are about to throw, don't actually acquire the lock, just throw */
2460 if (CORO_THROW)
2461 return 0;
2021 if (SvIVX (count_sv) > 0) 2462 else if (SvIVX (count_sv) > 0)
2022 { 2463 {
2023 SvSTATE (coro_current)->on_destroy = 0; 2464 SvSTATE_current->on_destroy = 0;
2465
2466 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2467 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2468 else
2469 coro_semaphore_adjust (aTHX_ av, 0);
2470
2025 return 0; 2471 return 0;
2026 } 2472 }
2027 else 2473 else
2028 { 2474 {
2029 int i; 2475 int i;
… …
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2484 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1; 2485 return 1;
2040 } 2486 }
2041} 2487}
2042 2488
2043static void 2489static int
2490slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2493}
2494
2495static int
2496slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2497{
2498 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2499}
2500
2501static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2502slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 2503{
2046 AV *av = (AV *)SvRV (arg [0]); 2504 AV *av = (AV *)SvRV (arg [0]);
2047 2505
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 2506 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 2507 {
… …
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2515 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 2516 frame->prepare = prepare_schedule;
2059 2517
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 2518 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2519 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 2520 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2521 }
2522}
2064 2523
2524static void
2525slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2528 frame->check = slf_check_semaphore_down;
2529}
2066 2530
2531static void
2532slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2533{
2534 if (items >= 2)
2535 {
2536 /* callback form */
2537 AV *av = (AV *)SvRV (arg [0]);
2538 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2539
2540 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2541
2542 if (SvIVX (AvARRAY (av)[0]) > 0)
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2545 frame->prepare = prepare_nop;
2546 frame->check = slf_check_nop;
2547 }
2548 else
2549 {
2550 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2551 frame->check = slf_check_semaphore_wait;
2552 }
2553}
2554
2555/* signal */
2556
2557static void
2558coro_signal_wake (pTHX_ AV *av, int count)
2559{
2560 SvIVX (AvARRAY (av)[0]) = 0;
2561
2562 /* now signal count waiters */
2563 while (count > 0 && AvFILLp (av) > 0)
2564 {
2565 SV *cb;
2566
2567 /* swap first two elements so we can shift a waiter */
2568 cb = AvARRAY (av)[0];
2569 AvARRAY (av)[0] = AvARRAY (av)[1];
2570 AvARRAY (av)[1] = cb;
2571
2572 cb = av_shift (av);
2573
2574 api_ready (aTHX_ cb);
2575 sv_setiv (cb, 0); /* signal waiter */
2576 SvREFCNT_dec (cb);
2577
2578 --count;
2579 }
2580}
2581
2582static int
2583slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2584{
2585 /* if we are about to throw, also stop waiting */
2586 return SvROK ((SV *)frame->data) && !CORO_THROW;
2587}
2588
2589static void
2590slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2591{
2592 AV *av = (AV *)SvRV (arg [0]);
2593
2594 if (SvIVX (AvARRAY (av)[0]))
2595 {
2596 SvIVX (AvARRAY (av)[0]) = 0;
2597 frame->prepare = prepare_nop;
2598 frame->check = slf_check_nop;
2599 }
2600 else
2601 {
2602 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2603
2604 av_push (av, waiter);
2605
2606 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2607 frame->prepare = prepare_schedule;
2608 frame->check = slf_check_signal_wait;
2609 }
2067} 2610}
2068 2611
2069/*****************************************************************************/ 2612/*****************************************************************************/
2613/* Coro::AIO */
2070 2614
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2615#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 2616
2073/* create a closure from XS, returns a code reference */ 2617/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 2618struct io_state
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{ 2619{
2079 CV *cv = (CV *)NEWSV (0, 0); 2620 int errorno;
2621 I32 laststype; /* U16 in 5.10.0 */
2622 int laststatval;
2623 Stat_t statcache;
2624};
2080 2625
2626static void
2627coro_aio_callback (pTHX_ CV *cv)
2628{
2629 dXSARGS;
2630 AV *state = (AV *)GENSUB_ARG;
2631 SV *coro = av_pop (state);
2632 SV *data_sv = newSV (sizeof (struct io_state));
2633
2634 av_extend (state, items - 1);
2635
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 2636 sv_upgrade (data_sv, SVt_PV);
2637 SvCUR_set (data_sv, sizeof (struct io_state));
2638 SvPOK_only (data_sv);
2082 2639
2083 CvANON_on (cv); 2640 {
2084 CvISXSUB_on (cv); 2641 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087 2642
2088 return newRV_noinc ((SV *)cv); 2643 data->errorno = errno;
2644 data->laststype = PL_laststype;
2645 data->laststatval = PL_laststatval;
2646 data->statcache = PL_statcache;
2647 }
2648
2649 /* now build the result vector out of all the parameters and the data_sv */
2650 {
2651 int i;
2652
2653 for (i = 0; i < items; ++i)
2654 av_push (state, SvREFCNT_inc_NN (ST (i)));
2655 }
2656
2657 av_push (state, data_sv);
2658
2659 api_ready (aTHX_ coro);
2660 SvREFCNT_dec (coro);
2661 SvREFCNT_dec ((AV *)state);
2662}
2663
2664static int
2665slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2666{
2667 AV *state = (AV *)frame->data;
2668
2669 /* if we are about to throw, return early */
2670 /* this does not cancel the aio request, but at least */
2671 /* it quickly returns */
2672 if (CORO_THROW)
2673 return 0;
2674
2675 /* one element that is an RV? repeat! */
2676 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2677 return 1;
2678
2679 /* restore status */
2680 {
2681 SV *data_sv = av_pop (state);
2682 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2683
2684 errno = data->errorno;
2685 PL_laststype = data->laststype;
2686 PL_laststatval = data->laststatval;
2687 PL_statcache = data->statcache;
2688
2689 SvREFCNT_dec (data_sv);
2690 }
2691
2692 /* push result values */
2693 {
2694 dSP;
2695 int i;
2696
2697 EXTEND (SP, AvFILLp (state) + 1);
2698 for (i = 0; i <= AvFILLp (state); ++i)
2699 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2700
2701 PUTBACK;
2702 }
2703
2704 return 0;
2705}
2706
2707static void
2708slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2711 SV *coro_hv = SvRV (coro_current);
2712 struct coro *coro = SvSTATE_hv (coro_hv);
2713
2714 /* put our coroutine id on the state arg */
2715 av_push (state, SvREFCNT_inc_NN (coro_hv));
2716
2717 /* first see whether we have a non-zero priority and set it as AIO prio */
2718 if (coro->prio)
2719 {
2720 dSP;
2721
2722 static SV *prio_cv;
2723 static SV *prio_sv;
2724
2725 if (expect_false (!prio_cv))
2726 {
2727 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2728 prio_sv = newSViv (0);
2729 }
2730
2731 PUSHMARK (SP);
2732 sv_setiv (prio_sv, coro->prio);
2733 XPUSHs (prio_sv);
2734
2735 PUTBACK;
2736 call_sv (prio_cv, G_VOID | G_DISCARD);
2737 }
2738
2739 /* now call the original request */
2740 {
2741 dSP;
2742 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2743 int i;
2744
2745 PUSHMARK (SP);
2746
2747 /* first push all args to the stack */
2748 EXTEND (SP, items + 1);
2749
2750 for (i = 0; i < items; ++i)
2751 PUSHs (arg [i]);
2752
2753 /* now push the callback closure */
2754 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2755
2756 /* now call the AIO function - we assume our request is uncancelable */
2757 PUTBACK;
2758 call_sv ((SV *)req, G_VOID | G_DISCARD);
2759 }
2760
2761 /* now that the requets is going, we loop toll we have a result */
2762 frame->data = (void *)state;
2763 frame->prepare = prepare_schedule;
2764 frame->check = slf_check_aio_req;
2765}
2766
2767static void
2768coro_aio_req_xs (pTHX_ CV *cv)
2769{
2770 dXSARGS;
2771
2772 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2773
2774 XSRETURN_EMPTY;
2089} 2775}
2090 2776
2091/*****************************************************************************/ 2777/*****************************************************************************/
2092 2778
2779#if CORO_CLONE
2780# include "clone.c"
2781#endif
2782
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2783MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2094 2784
2095PROTOTYPES: DISABLE 2785PROTOTYPES: DISABLE
2096 2786
2097BOOT: 2787BOOT:
2098{ 2788{
2099#ifdef USE_ITHREADS 2789#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 2790# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 2791 coro_thx = PERL_GET_CONTEXT;
2103# endif 2792# endif
2104#endif 2793#endif
2105 BOOT_PAGESIZE; 2794 BOOT_PAGESIZE;
2795
2796 cctx_current = cctx_new_empty ();
2106 2797
2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2798 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2799 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2109 2800
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2801 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2130 2821
2131 { 2822 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2823 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 2824
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2825 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 2826 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 2827
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2828 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 2829 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 2830 }
2142 2831
2143 coroapi.ver = CORO_API_VERSION; 2832 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 2833 coroapi.rev = CORO_API_REVISION;
2145 2834
… …
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2853 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2165} 2854}
2166 2855
2167SV * 2856SV *
2168new (char *klass, ...) 2857new (char *klass, ...)
2858 ALIAS:
2859 Coro::new = 1
2169 CODE: 2860 CODE:
2170{ 2861{
2171 struct coro *coro; 2862 struct coro *coro;
2172 MAGIC *mg; 2863 MAGIC *mg;
2173 HV *hv; 2864 HV *hv;
2865 CV *cb;
2174 int i; 2866 int i;
2867
2868 if (items > 1)
2869 {
2870 cb = coro_sv_2cv (aTHX_ ST (1));
2871
2872 if (!ix)
2873 {
2874 if (CvISXSUB (cb))
2875 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2876
2877 if (!CvROOT (cb))
2878 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2879 }
2880 }
2175 2881
2176 Newz (0, coro, 1, struct coro); 2882 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV (); 2883 coro->args = newAV ();
2178 coro->flags = CF_NEW; 2884 coro->flags = CF_NEW;
2179 2885
… …
2184 coro->hv = hv = newHV (); 2890 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2891 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP; 2892 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2893 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188 2894
2895 if (items > 1)
2896 {
2189 av_extend (coro->args, items - 1); 2897 av_extend (coro->args, items - 1 + ix - 1);
2898
2899 if (ix)
2900 {
2901 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2902 cb = cv_coro_run;
2903 }
2904
2905 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2906
2190 for (i = 1; i < items; i++) 2907 for (i = 2; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i))); 2908 av_push (coro->args, newSVsv (ST (i)));
2909 }
2192} 2910}
2193 OUTPUT: 2911 OUTPUT:
2194 RETVAL 2912 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 2913
2201void 2914void
2202transfer (...) 2915transfer (...)
2203 PROTOTYPE: $$ 2916 PROTOTYPE: $$
2204 CODE: 2917 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2918 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 2919
2207bool 2920bool
2208_destroy (SV *coro_sv) 2921_destroy (SV *coro_sv)
2209 CODE: 2922 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2923 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2214void 2927void
2215_exit (int code) 2928_exit (int code)
2216 PROTOTYPE: $ 2929 PROTOTYPE: $
2217 CODE: 2930 CODE:
2218 _exit (code); 2931 _exit (code);
2932
2933SV *
2934clone (Coro::State coro)
2935 CODE:
2936{
2937#if CORO_CLONE
2938 struct coro *ncoro = coro_clone (aTHX_ coro);
2939 MAGIC *mg;
2940 /* TODO: too much duplication */
2941 ncoro->hv = newHV ();
2942 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2943 mg->mg_flags |= MGf_DUP;
2944 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2945#else
2946 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2947#endif
2948}
2949 OUTPUT:
2950 RETVAL
2219 2951
2220int 2952int
2221cctx_stacksize (int new_stacksize = 0) 2953cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$ 2954 PROTOTYPE: ;$
2223 CODE: 2955 CODE:
… …
2328 3060
2329void 3061void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 3062throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$ 3063 PROTOTYPE: $;$
2332 CODE: 3064 CODE:
3065{
3066 struct coro *current = SvSTATE_current;
3067 SV **throwp = self == current ? &CORO_THROW : &self->except;
2333 SvREFCNT_dec (self->throw); 3068 SvREFCNT_dec (*throwp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3069 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3070}
2335 3071
2336void 3072void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3073api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 3074 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3075 C_ARGS: aTHX_ coro, flags
2340 3076
2341SV * 3077SV *
2342has_cctx (Coro::State coro) 3078has_cctx (Coro::State coro)
2343 PROTOTYPE: $ 3079 PROTOTYPE: $
2344 CODE: 3080 CODE:
2345 RETVAL = boolSV (!!coro->cctx); 3081 /* maybe manage the running flag differently */
3082 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2346 OUTPUT: 3083 OUTPUT:
2347 RETVAL 3084 RETVAL
2348 3085
2349int 3086int
2350is_traced (Coro::State coro) 3087is_traced (Coro::State coro)
… …
2370 3107
2371void 3108void
2372force_cctx () 3109force_cctx ()
2373 PROTOTYPE: 3110 PROTOTYPE:
2374 CODE: 3111 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3112 cctx_current->idle_sp = 0;
2377 3113
2378void 3114void
2379swap_defsv (Coro::State self) 3115swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3116 PROTOTYPE: $
2381 ALIAS: 3117 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3125 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3126
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3127 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3128 }
2393 3129
3130
2394MODULE = Coro::State PACKAGE = Coro 3131MODULE = Coro::State PACKAGE = Coro
2395 3132
2396BOOT: 3133BOOT:
2397{ 3134{
2398 int i; 3135 int i;
2399 3136
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3137 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3138 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 3139 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3140 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3141 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 3142 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3143 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3144 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3145 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3146
3147 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3148 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3149 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3150 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2406 3151
2407 coro_stash = gv_stashpv ("Coro", TRUE); 3152 coro_stash = gv_stashpv ("Coro", TRUE);
2408 3153
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3154 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3155 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2418 3163
2419 { 3164 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3165 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 3166
2422 coroapi.schedule = api_schedule; 3167 coroapi.schedule = api_schedule;
3168 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 3169 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 3170 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 3171 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 3172 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 3173 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 3174 coroapi.current = coro_current;
2429 3175
2430 GCoroAPI = &coroapi; 3176 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 3177 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 3178 SvREADONLY_on (sv);
2433 } 3179 }
2434} 3180}
2435 3181
2436void 3182void
3183terminate (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3186
3187void
2437schedule (...) 3188schedule (...)
2438 CODE: 3189 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3190 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3191
3192void
3193schedule_to (...)
3194 CODE:
3195 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3196
3197void
3198cede_to (...)
3199 CODE:
3200 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 3201
2441void 3202void
2442cede (...) 3203cede (...)
2443 CODE: 3204 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3205 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 3206
2446void 3207void
2447cede_notself (...) 3208cede_notself (...)
2448 CODE: 3209 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3210 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3211
3212void
3213_cancel (Coro::State self)
3214 CODE:
3215 coro_state_destroy (aTHX_ self);
3216 coro_call_on_destroy (aTHX_ self);
2450 3217
2451void 3218void
2452_set_current (SV *current) 3219_set_current (SV *current)
2453 PROTOTYPE: $ 3220 PROTOTYPE: $
2454 CODE: 3221 CODE:
… …
2499 CODE: 3266 CODE:
2500 RETVAL = coro_nready; 3267 RETVAL = coro_nready;
2501 OUTPUT: 3268 OUTPUT:
2502 RETVAL 3269 RETVAL
2503 3270
2504# for async_pool speedup
2505void 3271void
2506_pool_1 (SV *cb) 3272_pool_handler (...)
2507 CODE: 3273 CODE:
2508{ 3274 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515
2516 if (!invoke)
2517 {
2518 SV *old = PL_diehook;
2519 PL_diehook = 0;
2520 SvREFCNT_dec (old);
2521 croak ("\3async_pool terminate\2\n");
2522 }
2523
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 {
2537 av_fill (defav, len - 1);
2538 for (i = 0; i < len; ++i)
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2540 }
2541}
2542 3275
2543void 3276void
2544_pool_2 (SV *cb) 3277async_pool (SV *cv, ...)
2545 CODE:
2546{
2547 struct coro *coro = SvSTATE (coro_current);
2548
2549 sv_setsv (cb, &PL_sv_undef);
2550
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $ 3278 PROTOTYPE: &@
2581 PPCODE: 3279 PPCODE:
2582{ 3280{
2583 AV *defav = GvAV (PL_defgv); 3281 HV *hv = (HV *)av_pop (av_async_pool);
2584 AV *av = newAV (); 3282 AV *av = newAV ();
3283 SV *cb = ST (0);
2585 int i; 3284 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 3285
2591 data->errorno = errno; 3286 av_extend (av, items - 2);
2592 data->laststype = PL_laststype; 3287 for (i = 1; i < items; ++i)
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3288 av_push (av, SvREFCNT_inc_NN (ST (i)));
2600 3289
2601 av_push (av, data_sv); 3290 if ((SV *)hv == &PL_sv_undef)
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 { 3291 {
2648 PUSHMARK (SP); 3292 PUSHMARK (SP);
3293 EXTEND (SP, 2);
3294 PUSHs (sv_Coro);
3295 PUSHs ((SV *)cv_pool_handler);
2649 PUTBACK; 3296 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3297 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2651 SPAGAIN; 3298 SPAGAIN;
3299
3300 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2652 } 3301 }
2653 3302
2654 --incede; 3303 {
3304 struct coro *coro = SvSTATE_hv (hv);
3305
3306 assert (!coro->invoke_cb);
3307 assert (!coro->invoke_av);
3308 coro->invoke_cb = SvREFCNT_inc (cb);
3309 coro->invoke_av = av;
3310 }
3311
3312 api_ready (aTHX_ (SV *)hv);
3313
3314 if (GIMME_V != G_VOID)
3315 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3316 else
3317 SvREFCNT_dec (hv);
2655} 3318}
3319
3320SV *
3321rouse_cb ()
3322 PROTOTYPE:
3323 CODE:
3324 RETVAL = coro_new_rouse_cb (aTHX);
3325 OUTPUT:
3326 RETVAL
3327
3328void
3329rouse_wait (...)
3330 PROTOTYPE: ;$
3331 PPCODE:
3332 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2656 3333
2657 3334
2658MODULE = Coro::State PACKAGE = PerlIO::cede 3335MODULE = Coro::State PACKAGE = PerlIO::cede
2659 3336
2660BOOT: 3337BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3338 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 3339
3340
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 3341MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 3342
2665SV * 3343SV *
2666new (SV *klass, SV *count_ = 0) 3344new (SV *klass, SV *count = 0)
2667 CODE: 3345 CODE:
2668{ 3346 RETVAL = sv_bless (
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3347 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2670 AV *av = newAV (); 3348 GvSTASH (CvGV (cv))
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3349 );
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3350 OUTPUT:
2673} 3351 RETVAL
3352
3353# helper for Coro::Channel
3354SV *
3355_alloc (int count)
3356 CODE:
3357 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 3358 OUTPUT:
2675 RETVAL 3359 RETVAL
2676 3360
2677SV * 3361SV *
2678count (SV *self) 3362count (SV *self)
… …
2684void 3368void
2685up (SV *self, int adjust = 1) 3369up (SV *self, int adjust = 1)
2686 ALIAS: 3370 ALIAS:
2687 adjust = 1 3371 adjust = 1
2688 CODE: 3372 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 3373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2690 3374
2691void 3375void
2692down (SV *self) 3376down (...)
2693 CODE: 3377 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3378 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3379
3380void
3381wait (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 3384
2696void 3385void
2697try (SV *self) 3386try (SV *self)
2698 PPCODE: 3387 PPCODE:
2699{ 3388{
… …
2711 XSRETURN_NO; 3400 XSRETURN_NO;
2712} 3401}
2713 3402
2714void 3403void
2715waiters (SV *self) 3404waiters (SV *self)
2716 CODE: 3405 PPCODE:
2717{ 3406{
2718 AV *av = (AV *)SvRV (self); 3407 AV *av = (AV *)SvRV (self);
3408 int wcount = AvFILLp (av) + 1 - 1;
2719 3409
2720 if (GIMME_V == G_SCALAR) 3410 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3411 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 3412 else
2723 { 3413 {
2724 int i; 3414 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 3415 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 3416 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 3417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 3418 }
2729} 3419}
2730 3420
3421MODULE = Coro::State PACKAGE = Coro::Signal
3422
3423SV *
3424new (SV *klass)
3425 CODE:
3426 RETVAL = sv_bless (
3427 coro_waitarray_new (aTHX_ 0),
3428 GvSTASH (CvGV (cv))
3429 );
3430 OUTPUT:
3431 RETVAL
3432
3433void
3434wait (...)
3435 CODE:
3436 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3437
3438void
3439broadcast (SV *self)
3440 CODE:
3441{
3442 AV *av = (AV *)SvRV (self);
3443 coro_signal_wake (aTHX_ av, AvFILLp (av));
3444}
3445
3446void
3447send (SV *self)
3448 CODE:
3449{
3450 AV *av = (AV *)SvRV (self);
3451
3452 if (AvFILLp (av))
3453 coro_signal_wake (aTHX_ av, 1);
3454 else
3455 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3456}
3457
3458IV
3459awaited (SV *self)
3460 CODE:
3461 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3462 OUTPUT:
3463 RETVAL
3464
3465
3466MODULE = Coro::State PACKAGE = Coro::AnyEvent
3467
3468BOOT:
3469 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3470
3471void
3472_schedule (...)
3473 CODE:
3474{
3475 static int incede;
3476
3477 api_cede_notself (aTHX);
3478
3479 ++incede;
3480 while (coro_nready >= incede && api_cede (aTHX))
3481 ;
3482
3483 sv_setsv (sv_activity, &PL_sv_undef);
3484 if (coro_nready >= incede)
3485 {
3486 PUSHMARK (SP);
3487 PUTBACK;
3488 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3489 }
3490
3491 --incede;
3492}
3493
3494
3495MODULE = Coro::State PACKAGE = Coro::AIO
3496
3497void
3498_register (char *target, char *proto, SV *req)
3499 CODE:
3500{
3501 CV *req_cv = coro_sv_2cv (aTHX_ req);
3502 /* newXSproto doesn't return the CV on 5.8 */
3503 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3504 sv_setpv ((SV *)slf_cv, proto);
3505 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3506}
3507

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