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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 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 expect_true (SvMAGIC (sv)) \
396 ? expect_true (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
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 481
443/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
444static void 483static void
445get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
446{ 485{
… …
452 else 491 else
453 { 492 {
454#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
461#else 500#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 502#endif
464 } 503 }
465} 504}
466 505
467static void 506static void
… …
474 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);
475 514
476 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
477 516
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
480 519
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 521}
483 522
484/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
489 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
490 c->slot = 0; 529 c->slot = 0;
491 530
492 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
493 532
494 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
498 538
499 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 540 # include "state.h"
501 #undef VAR 541 #undef VAR
502 542
… …
514 } 554 }
515 555
516 PUTBACK; 556 PUTBACK;
517 } 557 }
518 558
519 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
520} 561}
521 562
522static void 563static void
523save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
524{ 565{
566 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
526 568
527 { 569 {
528 dSP; 570 dSP;
529 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
587 629
588 { 630 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 632
591 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
595 638
596 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 640 # include "state.h"
598 #undef VAR 641 #undef VAR
599 } 642 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
607 */ 650 */
608#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
610#else 653#else
611static void 654static void
612coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
613{ 656{
614 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 721 Safefree (PL_retstack);
679#endif 722#endif
680} 723}
681 724
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
682static size_t 734static size_t
683coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
684{ 736{
685 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
686 738
687 if (coro->mainstack) 739 if (coro->mainstack)
688 { 740 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
693 { 742 {
694 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
695 744 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 745 #undef SYM
699 } 746 }
700 else 747 else
701 slot = coro->slot;
702
703 if (slot)
704 { 748 {
705 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 752 }
717 } 753 }
718 754
719 return rss; 755 return rss;
720} 756}
… …
733#endif 769#endif
734 770
735/* 771/*
736 * This overrides the default magic get method of %SIG elements. 772 * This overrides the default magic get method of %SIG elements.
737 * 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
738 * 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
739 * readback here. 775 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 776 */
744static int 777static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 778coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 779{
747 const char *s = MgPV_nolen_const (mg); 780 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 834
802 if (svp) 835 if (svp)
803 { 836 {
804 SV *old = *svp; 837 SV *old = *svp;
805 *svp = newSVsv (sv); 838 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 839 SvREFCNT_dec (old);
807 return 0; 840 return 0;
808 } 841 }
809 } 842 }
810 843
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 855slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 856{
824 return 0; 857 return 0;
825} 858}
826 859
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 869coro_setup (pTHX_ struct coro *coro)
829{ 870{
830 /* 871 /*
831 * emulate part of the perl startup here. 872 * emulate part of the perl startup here.
832 */ 873 */
… …
834 875
835 PL_runops = RUNOPS_DEFAULT; 876 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 877 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 878 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 879 PL_comppad = 0;
880 PL_comppad_name = 0;
881 PL_comppad_name_fill = 0;
882 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 883 PL_curpm = 0;
840 PL_curpad = 0; 884 PL_curpad = 0;
841 PL_localizing = 0; 885 PL_localizing = 0;
842 PL_dirty = 0; 886 PL_dirty = 0;
843 PL_restartop = 0; 887 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 888#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 889 PL_parser = 0;
846#endif 890#endif
891 PL_hints = 0;
847 892
848 /* recreate the die/warn hooks */ 893 /* recreate the die/warn hooks */
849 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 );
850 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);
851 896
852 GvSV (PL_defgv) = newSV (0); 897 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 898 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 899 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 902 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 903 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 904
859 { 905 {
860 dSP; 906 dSP;
861 UNOP myop; 907 UNOP myop;
862 908
863 Zero (&myop, 1, UNOP); 909 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 910 myop.op_next = Nullop;
911 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 912 myop.op_flags = OPf_WANT_VOID;
866 913
867 PUSHMARK (SP); 914 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 915 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 916 PUTBACK;
870 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 919 }
874 920
875 /* 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
876 * 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.
877 */ 923 */
878 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 */
879 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 */
880}
881 926
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
882static void 939static void
883coro_destruct (pTHX_ struct coro *coro) 940coro_unwind_stacks (pTHX)
884{ 941{
885 if (!IN_DESTRUCT) 942 if (!IN_DESTRUCT)
886 { 943 {
887 /* restore all saved variables and stuff */ 944 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 945 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 953 POPSTACK_TO (PL_mainstack);
897 954
898 /* unwind main stack */ 955 /* unwind main stack */
899 dounwind (-1); 956 dounwind (-1);
900 } 957 }
958}
959
960static void
961coro_destruct_perl (pTHX_ struct coro *coro)
962{
963 coro_unwind_stacks (aTHX);
901 964
902 SvREFCNT_dec (GvSV (PL_defgv)); 965 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 966 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 967 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 968 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 969 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 970 SvREFCNT_dec (GvSV (irsgv));
971 SvREFCNT_dec (GvHV (PL_hintgv));
908 972
909 SvREFCNT_dec (PL_diehook); 973 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 974 SvREFCNT_dec (PL_warnhook);
911 975
912 SvREFCNT_dec (coro->saved_deffh); 976 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 977 SvREFCNT_dec (coro->rouse_cb);
978 SvREFCNT_dec (coro->invoke_cb);
979 SvREFCNT_dec (coro->invoke_av);
914 980
915 coro_destruct_stacks (aTHX); 981 coro_destruct_stacks (aTHX);
916} 982}
917 983
918INLINE void 984INLINE void
… …
928static int 994static int
929runops_trace (pTHX) 995runops_trace (pTHX)
930{ 996{
931 COP *oldcop = 0; 997 COP *oldcop = 0;
932 int oldcxix = -2; 998 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 999
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1000 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1001 {
938 PERL_ASYNC_CHECK (); 1002 PERL_ASYNC_CHECK ();
939 1003
940 if (cctx->flags & CC_TRACE_ALL) 1004 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1005 {
942 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)
943 { 1007 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1008 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1009 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1010 AV *av = newAV (); /* return values */
947 SV **cb; 1011 SV **cb;
… …
984 1048
985 if (PL_curcop != &PL_compiling) 1049 if (PL_curcop != &PL_compiling)
986 { 1050 {
987 SV **cb; 1051 SV **cb;
988 1052
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1053 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1054 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1055 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1056
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1057 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1058 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1059 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1060 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1061 SV *fullname = sv_2mortal (newSV (0));
999 1062
1000 if (isGV (gv)) 1063 if (isGV (gv))
… …
1005 SAVETMPS; 1068 SAVETMPS;
1006 EXTEND (SP, 3); 1069 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1070 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1071 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1072 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1074 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1077 SPAGAIN;
1015 FREETMPS; 1078 FREETMPS;
… …
1018 } 1081 }
1019 1082
1020 oldcxix = cxstack_ix; 1083 oldcxix = cxstack_ix;
1021 } 1084 }
1022 1085
1023 if (cctx->flags & CC_TRACE_LINE) 1086 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1087 {
1025 dSP; 1088 dSP;
1026 1089
1027 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1091 ENTER;
… …
1047 1110
1048 TAINT_NOT; 1111 TAINT_NOT;
1049 return 0; 1112 return 0;
1050} 1113}
1051 1114
1115static struct CoroSLF cctx_ssl_frame;
1116
1052static void 1117static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1118slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1119{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1120 ta->prev = 0;
1057} 1121}
1058 1122
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1123static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1124slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1125{
1062/* 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 */
1063static void NOINLINE 1132static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1133cctx_prepare (pTHX)
1065{ 1134{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1135 PL_top_env = &PL_start_env;
1070 1136
1071 if (cctx->flags & CC_TRACE) 1137 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1138 PL_runops = runops_trace;
1073 1139
1074 Zero (&myop, 1, UNOP); 1140 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1141 * that can lead to creation of a new cctx */
1076 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));
1077 1144
1078 PUSHMARK (SP); 1145 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1146 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1147
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1148 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1149 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1150}
1087 1151
1088/* 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 */
1089INLINE void 1153INLINE void
1090transfer_tail (pTHX) 1154transfer_tail (pTHX)
1091{ 1155{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1156 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1157}
1107 1158
1108/* 1159/*
1109 * this is a _very_ stripped down perl interpreter ;) 1160 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1161 */
… …
1122 /* normally we would need to skip the entersub here */ 1173 /* normally we would need to skip the entersub here */
1123 /* 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 */
1124 /* PL_nop = PL_nop->op_next */ 1175 /* PL_nop = PL_nop->op_next */
1125 1176
1126 /* inject a fake subroutine call to cctx_init */ 1177 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1178 cctx_prepare (aTHX);
1128 1179
1129 /* cctx_run is the alternative tail of transfer() */ 1180 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1181 transfer_tail (aTHX);
1132 1182
1133 /* 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 */
1134 PL_restartop = PL_op; 1184 PL_restartop = PL_op;
1135 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 */
1136 1190
1137 /* 1191 /*
1138 * 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
1139 * 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)
1140 * 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
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1195 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * 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.
1143 */ 1199 */
1144 PL_top_env = main_top_env; 1200 PL_top_env = main_top_env;
1145 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 */
1146 } 1202 }
1147} 1203}
… …
1224cctx_destroy (coro_cctx *cctx) 1280cctx_destroy (coro_cctx *cctx)
1225{ 1281{
1226 if (!cctx) 1282 if (!cctx)
1227 return; 1283 return;
1228 1284
1285 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1286
1229 --cctx_count; 1287 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1288 coro_destroy (&cctx->cctx);
1231 1289
1232 /* coro_transfer creates new, empty cctx's */ 1290 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1291 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1349/** coroutine switching *****************************************************/
1292 1350
1293static void 1351static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1352transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1353{
1354 /* TODO: throwing up here is considered harmful */
1355
1296 if (expect_true (prev != next)) 1356 if (expect_true (prev != next))
1297 { 1357 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1358 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 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,");
1300 1360
1301 if (expect_false (next->flags & CF_RUNNING)) 1361 if (expect_false (next->flags & CF_RUNNING))
1302 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,");
1303 1363
1304 if (expect_false (next->flags & CF_DESTROYED)) 1364 if (expect_false (next->flags & CF_DESTROYED))
… …
1310#endif 1370#endif
1311 } 1371 }
1312} 1372}
1313 1373
1314/* always use the TRANSFER macro */ 1374/* always use the TRANSFER macro */
1315static void NOINLINE 1375static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1376transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1377{
1318 dSTACKLEVEL; 1378 dSTACKLEVEL;
1319 1379
1320 /* sometimes transfer is only called to set idle_sp */ 1380 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1381 if (expect_false (!prev))
1322 { 1382 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1383 cctx_current->idle_sp = STACKLEVEL;
1324 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 */
1325 } 1385 }
1326 else if (expect_true (prev != next)) 1386 else if (expect_true (prev != next))
1327 { 1387 {
1328 coro_cctx *prev__cctx; 1388 coro_cctx *cctx_prev;
1329 1389
1330 if (expect_false (prev->flags & CF_NEW)) 1390 if (expect_false (prev->flags & CF_NEW))
1331 { 1391 {
1332 /* create a new empty/source context */ 1392 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1393 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1394 prev->flags |= CF_RUNNING;
1336 } 1395 }
1337 1396
1338 prev->flags &= ~CF_RUNNING; 1397 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1408 coro_setup (aTHX_ next);
1350 } 1409 }
1351 else 1410 else
1352 load_perl (aTHX_ next); 1411 load_perl (aTHX_ next);
1353 1412
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1413 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1414 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1415 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1416 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1417 && !force_cctx
1361 )) 1418 ))
1362 { 1419 {
1363 /* 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 */
1364 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));
1365 1422
1366 prev->cctx = 0;
1367
1368 /* 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. */
1369 /* 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 */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1425 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1426 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1427 next->cctx = cctx_get (aTHX);
1373 1428
1374 cctx_put (prev__cctx); 1429 cctx_put (cctx_current);
1375 } 1430 }
1431 else
1432 prev->cctx = cctx_current;
1376 1433
1377 ++next->usecount; 1434 ++next->usecount;
1378 1435
1379 if (expect_true (!next->cctx)) 1436 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1437 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1438
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1439 next->cctx = 0;
1383 transfer_next = next;
1384 1440
1385 if (expect_false (prev__cctx != next->cctx)) 1441 if (expect_false (cctx_prev != cctx_current))
1386 { 1442 {
1387 prev__cctx->top_env = PL_top_env; 1443 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1444 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1445 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1446 }
1391 1447
1392 transfer_tail (aTHX); 1448 transfer_tail (aTHX);
1393 } 1449 }
1394} 1450}
… …
1416 --coro_nready; 1472 --coro_nready;
1417 } 1473 }
1418 else 1474 else
1419 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 */
1420 1476
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1477 if (coro->mainstack
1478 && coro->mainstack != main_mainstack
1479 && coro->slot
1480 && !PL_dirty)
1422 { 1481 {
1423 struct coro temp; 1482 struct coro temp;
1424 1483
1425 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));
1426 1485
1427 save_perl (aTHX_ &temp); 1486 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1487 load_perl (aTHX_ coro);
1429 1488
1430 coro_destruct (aTHX_ coro); 1489 coro_destruct_perl (aTHX_ coro);
1431 1490
1432 load_perl (aTHX_ &temp); 1491 load_perl (aTHX_ &temp);
1433 1492
1434 coro->slot = 0; 1493 coro->slot = 0;
1435 } 1494 }
1436 1495
1437 cctx_destroy (coro->cctx); 1496 cctx_destroy (coro->cctx);
1497 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1498 SvREFCNT_dec (coro->args);
1499 SvREFCNT_dec (CORO_THROW);
1439 1500
1440 if (coro->next) coro->next->prev = coro->prev; 1501 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1502 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1503 if (coro == coro_first) coro_first = coro->next;
1443 1504
… …
1497 1558
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1559 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1560 TRANSFER (ta, 1);
1500} 1561}
1501 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
1502/** Coro ********************************************************************/ 1586/** Coro ********************************************************************/
1503 1587
1504INLINE void 1588INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1589coro_enq (pTHX_ struct coro *coro)
1506{ 1590{
… …
1524{ 1608{
1525 struct coro *coro; 1609 struct coro *coro;
1526 SV *sv_hook; 1610 SV *sv_hook;
1527 void (*xs_hook)(void); 1611 void (*xs_hook)(void);
1528 1612
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1613 coro = SvSTATE (coro_sv);
1533 1614
1534 if (coro->flags & CF_READY) 1615 if (coro->flags & CF_READY)
1535 return 0; 1616 return 0;
1536 1617
… …
1549 ENTER; 1630 ENTER;
1550 SAVETMPS; 1631 SAVETMPS;
1551 1632
1552 PUSHMARK (SP); 1633 PUSHMARK (SP);
1553 PUTBACK; 1634 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1635 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1636
1557 FREETMPS; 1637 FREETMPS;
1558 LEAVE; 1638 LEAVE;
1559 } 1639 }
1560 1640
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1648api_is_ready (pTHX_ SV *coro_sv)
1569{ 1649{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1650 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1651}
1572 1652
1653/* expects to own a reference to next->hv */
1573INLINE void 1654INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1655prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1656{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1657 SV *prev_sv = SvRV (coro_current);
1658
1616 ta->prev = SvSTATE_hv (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1660 ta->next = next;
1661
1617 TRANSFER_CHECK (*ta); 1662 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1663
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1664 SvRV_set (coro_current, (SV *)next->hv);
1621 1665
1622 free_coro_mortal (aTHX); 1666 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1667 coro_mortal = prev_sv;
1624} 1668}
1625 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
1626INLINE void 1721INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1722prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1723{
1629 api_ready (aTHX_ coro_current); 1724 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1725 prepare_schedule (aTHX_ ta);
… …
1649{ 1744{
1650 struct coro_transfer_args ta; 1745 struct coro_transfer_args ta;
1651 1746
1652 prepare_schedule (aTHX_ &ta); 1747 prepare_schedule (aTHX_ &ta);
1653 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);
1654} 1759}
1655 1760
1656static int 1761static int
1657api_cede (pTHX) 1762api_cede (pTHX)
1658{ 1763{
… …
1687static void 1792static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1793api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1794{
1690 struct coro *coro = SvSTATE (coro_sv); 1795 struct coro *coro = SvSTATE (coro_sv);
1691 1796
1797 if (coro->flags & CF_RUNNING)
1798 croak ("cannot enable tracing on a running coroutine, caught");
1799
1692 if (flags & CC_TRACE) 1800 if (flags & CC_TRACE)
1693 { 1801 {
1694 if (!coro->cctx) 1802 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1803 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1804 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1805 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1806
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1807 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1808 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1809 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1810 {
… …
1705 if (coro->flags & CF_RUNNING) 1813 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1814 PL_runops = RUNOPS_DEFAULT;
1707 else 1815 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1816 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 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;
1710} 2303}
1711 2304
1712/*****************************************************************************/ 2305/*****************************************************************************/
1713/* PerlIO::cede */ 2306/* PerlIO::cede */
1714 2307
… …
1783 PerlIOBuf_get_cnt, 2376 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2377 PerlIOBuf_set_ptrcnt,
1785}; 2378};
1786 2379
1787/*****************************************************************************/ 2380/*****************************************************************************/
2381/* Coro::Semaphore & Coro::Signal */
1788 2382
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2383static SV *
1800pp_restore (pTHX) 2384coro_waitarray_new (pTHX_ int count)
1801{ 2385{
1802 dSP; 2386 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2387 AV *av = newAV ();
2388 SV **ary;
1803 2389
1804 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);
1805 2403
1806 EXTEND (SP, 3); 2404 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2405}
1814 2406
1815static void 2407/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990 2408
1991static void 2409static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2410coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2411{
1994 SV *count_sv = AvARRAY (av)[0]; 2412 SV *count_sv = AvARRAY (av)[0];
… …
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2424 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2425 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2426 cb = av_shift (av);
2009 2427
2010 if (SvOBJECT (cb)) 2428 if (SvOBJECT (cb))
2429 {
2011 api_ready (aTHX_ cb); 2430 api_ready (aTHX_ cb);
2012 else 2431 --count;
2013 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 }
2014 2441
2015 SvREFCNT_dec (cb); 2442 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2443 }
2019} 2444}
2020 2445
2021static void 2446static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2447coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2449 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2450 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2451}
2027 2452
2028static int 2453static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2454slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2455{
2031 AV *av = (AV *)frame->data; 2456 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2457 SV *count_sv = AvARRAY (av)[0];
2033 2458
2459 /* if we are about to throw, don't actually acquire the lock, just throw */
2460 if (CORO_THROW)
2461 return 0;
2034 if (SvIVX (count_sv) > 0) 2462 else if (SvIVX (count_sv) > 0)
2035 { 2463 {
2036 SvSTATE_current->on_destroy = 0; 2464 SvSTATE_current->on_destroy = 0;
2465
2466 if (acquire)
2037 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
2038 return 0; 2471 return 0;
2039 } 2472 }
2040 else 2473 else
2041 { 2474 {
2042 int i; 2475 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2484 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2485 return 1;
2053 } 2486 }
2054} 2487}
2055 2488
2056static 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
2057slf_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)
2058{ 2503{
2059 AV *av = (AV *)SvRV (arg [0]); 2504 AV *av = (AV *)SvRV (arg [0]);
2060 2505
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2506 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2507 {
2063 frame->data = (void *)av; 2508 frame->data = (void *)av;
2064 frame->prepare = prepare_nop; 2509 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 } 2510 }
2067 else 2511 else
2068 { 2512 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2513 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070 2514
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2515 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule; 2516 frame->prepare = prepare_schedule;
2073 2517
2074 /* to avoid race conditions when a woken-up coro gets terminated */ 2518 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2519 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2520 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2521 }
2522}
2079 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);
2080 frame->check = slf_check_semaphore_down; 2528 frame->check = slf_check_semaphore_down;
2529}
2081 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 }
2082} 2610}
2083 2611
2084/*****************************************************************************/ 2612/*****************************************************************************/
2613/* Coro::AIO */
2085 2614
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2615#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2087 2616
2088/* create a closure from XS, returns a code reference */ 2617/* helper storage struct */
2089/* the arg can be accessed via GENSUB_ARG from the callback */ 2618struct io_state
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{ 2619{
2094 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};
2095 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
2096 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);
2097 2639
2098 CvANON_on (cv); 2640 {
2099 CvISXSUB_on (cv); 2641 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102 2642
2103 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;
2104} 2775}
2105 2776
2106/*****************************************************************************/ 2777/*****************************************************************************/
2778
2779#if CORO_CLONE
2780# include "clone.c"
2781#endif
2107 2782
2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2783MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2109 2784
2110PROTOTYPES: DISABLE 2785PROTOTYPES: DISABLE
2111 2786
… …
2116 coro_thx = PERL_GET_CONTEXT; 2791 coro_thx = PERL_GET_CONTEXT;
2117# endif 2792# endif
2118#endif 2793#endif
2119 BOOT_PAGESIZE; 2794 BOOT_PAGESIZE;
2120 2795
2796 cctx_current = cctx_new_empty ();
2797
2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2798 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2799 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2123 2800
2124 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;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2802 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2144 2821
2145 { 2822 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2823 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147 2824
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2825 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf, 2826 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2150 newSVpv ("coro_slf", 0), 0);
2151 2827
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2828 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf, 2829 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2154 newSVpv ("coro schedule like function", 0), 0);
2155 } 2830 }
2156 2831
2157 coroapi.ver = CORO_API_VERSION; 2832 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION; 2833 coroapi.rev = CORO_API_REVISION;
2159 2834
… …
2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2853 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2179} 2854}
2180 2855
2181SV * 2856SV *
2182new (char *klass, ...) 2857new (char *klass, ...)
2858 ALIAS:
2859 Coro::new = 1
2183 CODE: 2860 CODE:
2184{ 2861{
2185 struct coro *coro; 2862 struct coro *coro;
2186 MAGIC *mg; 2863 MAGIC *mg;
2187 HV *hv; 2864 HV *hv;
2865 CV *cb;
2188 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 }
2189 2881
2190 Newz (0, coro, 1, struct coro); 2882 Newz (0, coro, 1, struct coro);
2191 coro->args = newAV (); 2883 coro->args = newAV ();
2192 coro->flags = CF_NEW; 2884 coro->flags = CF_NEW;
2193 2885
… …
2198 coro->hv = hv = newHV (); 2890 coro->hv = hv = newHV ();
2199 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);
2200 mg->mg_flags |= MGf_DUP; 2892 mg->mg_flags |= MGf_DUP;
2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2893 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2202 2894
2895 if (items > 1)
2896 {
2203 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
2204 for (i = 1; i < items; i++) 2907 for (i = 2; i < items; i++)
2205 av_push (coro->args, newSVsv (ST (i))); 2908 av_push (coro->args, newSVsv (ST (i)));
2909 }
2206} 2910}
2207 OUTPUT: 2911 OUTPUT:
2208 RETVAL 2912 RETVAL
2209
2210void
2211_set_stacklevel (...)
2212 CODE:
2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2214 2913
2215void 2914void
2216transfer (...) 2915transfer (...)
2217 PROTOTYPE: $$ 2916 PROTOTYPE: $$
2218 CODE: 2917 CODE:
2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2918 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220 2919
2221bool 2920bool
2222_destroy (SV *coro_sv) 2921_destroy (SV *coro_sv)
2223 CODE: 2922 CODE:
2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2923 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2228void 2927void
2229_exit (int code) 2928_exit (int code)
2230 PROTOTYPE: $ 2929 PROTOTYPE: $
2231 CODE: 2930 CODE:
2232 _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
2233 2951
2234int 2952int
2235cctx_stacksize (int new_stacksize = 0) 2953cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$ 2954 PROTOTYPE: ;$
2237 CODE: 2955 CODE:
… …
2342 3060
2343void 3061void
2344throw (Coro::State self, SV *throw = &PL_sv_undef) 3062throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$ 3063 PROTOTYPE: $;$
2346 CODE: 3064 CODE:
3065{
3066 struct coro *current = SvSTATE_current;
3067 SV **throwp = self == current ? &CORO_THROW : &self->except;
2347 SvREFCNT_dec (self->throw); 3068 SvREFCNT_dec (*throwp);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3069 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3070}
2349 3071
2350void 3072void
2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3073api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$ 3074 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags 3075 C_ARGS: aTHX_ coro, flags
2354 3076
2355SV * 3077SV *
2356has_cctx (Coro::State coro) 3078has_cctx (Coro::State coro)
2357 PROTOTYPE: $ 3079 PROTOTYPE: $
2358 CODE: 3080 CODE:
2359 RETVAL = boolSV (!!coro->cctx); 3081 /* maybe manage the running flag differently */
3082 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2360 OUTPUT: 3083 OUTPUT:
2361 RETVAL 3084 RETVAL
2362 3085
2363int 3086int
2364is_traced (Coro::State coro) 3087is_traced (Coro::State coro)
… …
2384 3107
2385void 3108void
2386force_cctx () 3109force_cctx ()
2387 PROTOTYPE: 3110 PROTOTYPE:
2388 CODE: 3111 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0; 3112 cctx_current->idle_sp = 0;
2390 3113
2391void 3114void
2392swap_defsv (Coro::State self) 3115swap_defsv (Coro::State self)
2393 PROTOTYPE: $ 3116 PROTOTYPE: $
2394 ALIAS: 3117 ALIAS:
… …
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3125 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403 3126
2404 SV *tmp = *src; *src = *dst; *dst = tmp; 3127 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 } 3128 }
2406 3129
3130
2407MODULE = Coro::State PACKAGE = Coro 3131MODULE = Coro::State PACKAGE = Coro
2408 3132
2409BOOT: 3133BOOT:
2410{ 3134{
2411 int i; 3135 int i;
2412 3136
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3137 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3138 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2416 3139 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3140 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3141 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2418 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);
2419 3151
2420 coro_stash = gv_stashpv ("Coro", TRUE); 3152 coro_stash = gv_stashpv ("Coro", TRUE);
2421 3153
2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3154 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2423 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3155 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2431 3163
2432 { 3164 {
2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3165 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2434 3166
2435 coroapi.schedule = api_schedule; 3167 coroapi.schedule = api_schedule;
3168 coroapi.schedule_to = api_schedule_to;
2436 coroapi.cede = api_cede; 3169 coroapi.cede = api_cede;
2437 coroapi.cede_notself = api_cede_notself; 3170 coroapi.cede_notself = api_cede_notself;
2438 coroapi.ready = api_ready; 3171 coroapi.ready = api_ready;
2439 coroapi.is_ready = api_is_ready; 3172 coroapi.is_ready = api_is_ready;
2440 coroapi.nready = coro_nready; 3173 coroapi.nready = coro_nready;
2441 coroapi.current = coro_current; 3174 coroapi.current = coro_current;
2442 3175
2443 GCoroAPI = &coroapi; 3176 /*GCoroAPI = &coroapi;*/
2444 sv_setiv (sv, (IV)&coroapi); 3177 sv_setiv (sv, (IV)&coroapi);
2445 SvREADONLY_on (sv); 3178 SvREADONLY_on (sv);
2446 } 3179 }
2447} 3180}
2448 3181
2449void 3182void
3183terminate (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3186
3187void
2450schedule (...) 3188schedule (...)
2451 CODE: 3189 CODE:
2452 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);
2453 3201
2454void 3202void
2455cede (...) 3203cede (...)
2456 CODE: 3204 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3205 CORO_EXECUTE_SLF_XS (slf_init_cede);
2458 3206
2459void 3207void
2460cede_notself (...) 3208cede_notself (...)
2461 CODE: 3209 CODE:
2462 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);
2463 3217
2464void 3218void
2465_set_current (SV *current) 3219_set_current (SV *current)
2466 PROTOTYPE: $ 3220 PROTOTYPE: $
2467 CODE: 3221 CODE:
… …
2512 CODE: 3266 CODE:
2513 RETVAL = coro_nready; 3267 RETVAL = coro_nready;
2514 OUTPUT: 3268 OUTPUT:
2515 RETVAL 3269 RETVAL
2516 3270
2517# for async_pool speedup
2518void 3271void
2519_pool_1 (SV *cb) 3272_pool_handler (...)
2520 CODE: 3273 CODE:
2521{ 3274 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
2524 AV *defav = GvAV (PL_defgv);
2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2526 AV *invoke_av;
2527 int i, len;
2528
2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
2534 croak ("\3async_pool terminate\2\n");
2535 }
2536
2537 SvREFCNT_dec (coro->saved_deffh);
2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2539
2540 hv_store (hv, "desc", sizeof ("desc") - 1,
2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2542
2543 invoke_av = (AV *)SvRV (invoke);
2544 len = av_len (invoke_av);
2545
2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2547
2548 if (len > 0)
2549 {
2550 av_fill (defav, len - 1);
2551 for (i = 0; i < len; ++i)
2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2553 }
2554}
2555 3275
2556void 3276void
2557_pool_2 (SV *cb) 3277async_pool (SV *cv, ...)
2558 CODE:
2559{
2560 struct coro *coro = SvSTATE_current;
2561
2562 sv_setsv (cb, &PL_sv_undef);
2563
2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2565 coro->saved_deffh = 0;
2566
2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
2573 croak ("\3async_pool terminate\2\n");
2574 }
2575
2576 av_clear (GvAV (PL_defgv));
2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579
2580 coro->prio = 0;
2581
2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2583 api_trace (aTHX_ coro_current, 0);
2584
2585 av_push (av_async_pool, newSVsv (coro_current));
2586}
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void
2592_get_state (SV *self)
2593 PROTOTYPE: $ 3278 PROTOTYPE: &@
2594 PPCODE: 3279 PPCODE:
2595{ 3280{
2596 AV *defav = GvAV (PL_defgv); 3281 HV *hv = (HV *)av_pop (av_async_pool);
2597 AV *av = newAV (); 3282 AV *av = newAV ();
3283 SV *cb = ST (0);
2598 int i; 3284 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603 3285
2604 data->errorno = errno; 3286 av_extend (av, items - 2);
2605 data->laststype = PL_laststype; 3287 for (i = 1; i < items; ++i)
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3288 av_push (av, SvREFCNT_inc_NN (ST (i)));
2613 3289
2614 av_push (av, data_sv); 3290 if ((SV *)hv == &PL_sv_undef)
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 { 3291 {
2661 PUSHMARK (SP); 3292 PUSHMARK (SP);
3293 EXTEND (SP, 2);
3294 PUSHs (sv_Coro);
3295 PUSHs ((SV *)cv_pool_handler);
2662 PUTBACK; 3296 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3297 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2664 SPAGAIN; 3298 SPAGAIN;
3299
3300 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2665 } 3301 }
2666 3302
2667 --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);
2668} 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);
2669 3333
2670 3334
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3335MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3336
2673BOOT: 3337BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3338 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3339
3340
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3341MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3342
2678SV * 3343SV *
2679new (SV *klass, SV *count_ = 0) 3344new (SV *klass, SV *count = 0)
2680 CODE: 3345 CODE:
2681{ 3346 RETVAL = sv_bless (
2682 /* 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),
2683 AV *av = newAV (); 3348 GvSTASH (CvGV (cv))
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3349 );
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3350 OUTPUT:
2686} 3351 RETVAL
3352
3353# helper for Coro::Channel
3354SV *
3355_alloc (int count)
3356 CODE:
3357 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3358 OUTPUT:
2688 RETVAL 3359 RETVAL
2689 3360
2690SV * 3361SV *
2691count (SV *self) 3362count (SV *self)
… …
2700 adjust = 1 3371 adjust = 1
2701 CODE: 3372 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 3374
2704void 3375void
2705down (SV *self) 3376down (...)
2706 CODE: 3377 CODE:
2707 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);
2708 3384
2709void 3385void
2710try (SV *self) 3386try (SV *self)
2711 PPCODE: 3387 PPCODE:
2712{ 3388{
… …
2724 XSRETURN_NO; 3400 XSRETURN_NO;
2725} 3401}
2726 3402
2727void 3403void
2728waiters (SV *self) 3404waiters (SV *self)
2729 CODE: 3405 PPCODE:
2730{ 3406{
2731 AV *av = (AV *)SvRV (self); 3407 AV *av = (AV *)SvRV (self);
3408 int wcount = AvFILLp (av) + 1 - 1;
2732 3409
2733 if (GIMME_V == G_SCALAR) 3410 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3411 XPUSHs (sv_2mortal (newSViv (wcount)));
2735 else 3412 else
2736 { 3413 {
2737 int i; 3414 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1); 3415 EXTEND (SP, wcount);
2739 for (i = 1; i <= AvFILLp (av); ++i) 3416 for (i = 1; i <= wcount; ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i])); 3417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2741 } 3418 }
2742} 3419}
2743 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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