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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.337 by root, Fri Dec 5 18:26:10 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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static 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);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static 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 */
187 181
188static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 184static SV *rv_diehook;
191static SV *rv_warnhook; 185static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
193 187
194/* async_pool helper stuff */ 188/* async_pool helper stuff */
195static SV *sv_pool_rss; 189static SV *sv_pool_rss;
196static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
197static 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;
198 196
199/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
200static SV *sv_activity; 198static SV *sv_activity;
201 199
202static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 229 int valgrind_id;
232#endif 230#endif
233 unsigned char flags; 231 unsigned char flags;
234} coro_cctx; 232} coro_cctx;
235 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
236enum { 238enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
245{ 247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 259
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
267struct coro { 261struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 263 coro_cctx *cctx;
270 264
271 /* process data */ 265 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 267 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
276 269
270 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
281 276
282 /* statistics */ 277 /* statistics */
283 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
284 279
285 /* coro process data */ 280 /* coro process data */
286 int prio; 281 int prio;
287 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
288 284
289 /* async_pool */ 285 /* async_pool */
290 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
291 289
292 /* linked list */ 290 /* linked list */
293 struct coro *next, *prev; 291 struct coro *next, *prev;
294}; 292};
295 293
296typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
298 296
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 */
299static struct slf_frame slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
300 301
301/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
302 303
303#define PRIO_MAX 3 304#define PRIO_MAX 3
304#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
309 310
310/* for Coro.pm */ 311/* for Coro.pm */
311static SV *coro_current; 312static SV *coro_current;
312static SV *coro_readyhook; 313static SV *coro_readyhook;
313static 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;
314static struct coro *coro_first; 316static struct coro *coro_first;
315#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
316 318
317/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
318 320
… …
344 get_hv (name, create); 346 get_hv (name, create);
345#endif 347#endif
346 return get_hv (name, create); 348 return get_hv (name, create);
347} 349}
348 350
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
349static AV * 412static AV *
350coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
351{ 414{
352 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
353 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
354 417
355 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
360 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
361#endif 424#endif
362 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
363 --AvFILLp (padlist); 426 --AvFILLp (padlist);
364 427
365 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
366 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
367 430
368 return newpadlist; 431 return newpadlist;
369} 432}
370 433
371static void 434static void
372free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
373{ 436{
374 /* may be during global destruction */ 437 /* may be during global destruction */
375 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
376 { 439 {
377 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
378 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
379 { 443 {
380 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
381 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
382 { 446 I32 j = AvFILLp (av);
383 SV *sv; 447
384 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
385 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
386
387 SvREFCNT_dec (*svp);
388 }
389 } 453 }
390 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
391 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
392 } 459 }
393} 460}
394 461
395static int 462static int
… …
404 471
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 473
407 return 0; 474 return 0;
408} 475}
409
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext
411#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 476
413static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 478 0, 0, 0, 0,
415 coro_cv_free 479 coro_cv_free
416}; 480};
417
418#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \
420 ? SvMAGIC (sv)->mg_type == type \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0
424
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427
428INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro)
430{
431 HV *stash;
432 MAGIC *mg;
433
434 if (SvROK (coro))
435 coro = SvRV (coro);
436
437 if (expect_false (SvTYPE (coro) != SVt_PVHV))
438 croak ("Coro::State object required");
439
440 stash = SvSTASH (coro);
441 if (expect_false (stash != coro_stash && stash != coro_state_stash))
442 {
443 /* very slow, but rare, check */
444 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
445 croak ("Coro::State object required");
446 }
447
448 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr;
450}
451
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
453 481
454/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
455static void 483static void
456get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
457{ 485{
… …
463 else 491 else
464 { 492 {
465#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
472#else 500#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
474#endif 502#endif
475 } 503 }
476} 504}
477 505
478static void 506static void
… …
485 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);
486 514
487 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
488 516
489 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
490 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
491 519
492 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
493} 521}
494 522
495/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
500 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
501 c->slot = 0; 529 c->slot = 0;
502 530
503 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
504 532
505 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
506 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
507 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
508 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
509 538
510 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
511 # include "state.h" 540 # include "state.h"
512 #undef VAR 541 #undef VAR
513 542
… …
525 } 554 }
526 555
527 PUTBACK; 556 PUTBACK;
528 } 557 }
529 558
530 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 560 CORO_THROW = c->except;
532} 561}
533 562
534static void 563static void
535save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
536{ 565{
537 c->slf_data = coroapi.slf_data; 566 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
539 568
540 { 569 {
541 dSP; 570 dSP;
542 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
599 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
600 629
601 { 630 {
602 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
603 632
604 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
605 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
606 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
607 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
608 638
609 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
610 # include "state.h" 640 # include "state.h"
611 #undef VAR 641 #undef VAR
612 } 642 }
… …
617 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
620 */ 650 */
621#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
623#else 653#else
624static void 654static void
625coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
626{ 656{
627 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
690#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
691 Safefree (PL_retstack); 721 Safefree (PL_retstack);
692#endif 722#endif
693} 723}
694 724
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
695static size_t 734static size_t
696coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
697{ 736{
698 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
699 738
700 if (coro->mainstack) 739 if (coro->mainstack)
701 { 740 {
702 perl_slots tmp_slot;
703 perl_slots *slot;
704
705 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
706 { 742 {
707 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
708 744 CORO_RSS;
709 #define VAR(name,type) slot->name = PL_ ## name;
710 # include "state.h"
711 #undef VAR 745 #undef SYM
712 } 746 }
713 else 747 else
714 slot = coro->slot;
715
716 if (slot)
717 { 748 {
718 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
719 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
720 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
721 rss += slot->tmps_max * sizeof (SV *);
722 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
723 rss += slot->scopestack_max * sizeof (I32);
724 rss += slot->savestack_max * sizeof (ANY);
725
726#if !PERL_VERSION_ATLEAST (5,10,0)
727 rss += slot->retstack_max * sizeof (OP *);
728#endif
729 } 752 }
730 } 753 }
731 754
732 return rss; 755 return rss;
733} 756}
… …
823 846
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 848}
826 849
827static void 850static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 851prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 852{
830 /* kind of mega-hacky, but works */ 853 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 854 ta->next = ta->prev = (struct coro *)ta;
832} 855}
833 856
834static int 857static int
835slf_check_nop (aTHX) 858slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 859{
837 return 0; 860 return 0;
838} 861}
839 862
840static void 863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
842{ 873{
843 /* 874 /*
844 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
845 */ 876 */
… …
847 878
848 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
849 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
850 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
851 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
852 PL_curpm = 0; 886 PL_curpm = 0;
853 PL_curpad = 0; 887 PL_curpad = 0;
854 PL_localizing = 0; 888 PL_localizing = 0;
855 PL_dirty = 0; 889 PL_dirty = 0;
856 PL_restartop = 0; 890 PL_restartop = 0;
857#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
858 PL_parser = 0; 892 PL_parser = 0;
859#endif 893#endif
894 PL_hints = 0;
860 895
861 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
862 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 897 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
863 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
864 899
865 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
866 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
867 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
868 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
869 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
870 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
871 907
872 { 908 {
873 dSP; 909 dSP;
874 UNOP myop; 910 UNOP myop;
875 911
876 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
879 916
880 PUSHMARK (SP); 917 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 919 PUTBACK;
883 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 922 }
887 923
888 /* this newly created coroutine might be run on an existing cctx which most 924 /* this newly created coroutine might be run on an existing cctx which most
889 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 925 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890 */ 926 */
891 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
893}
894 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
895static void 942static void
896coro_destruct (pTHX_ struct coro *coro) 943coro_unwind_stacks (pTHX)
897{ 944{
898 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
899 { 946 {
900 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
901 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
909 POPSTACK_TO (PL_mainstack); 956 POPSTACK_TO (PL_mainstack);
910 957
911 /* unwind main stack */ 958 /* unwind main stack */
912 dounwind (-1); 959 dounwind (-1);
913 } 960 }
961}
962
963static void
964coro_destruct_perl (pTHX_ struct coro *coro)
965{
966 coro_unwind_stacks (aTHX);
914 967
915 SvREFCNT_dec (GvSV (PL_defgv)); 968 SvREFCNT_dec (GvSV (PL_defgv));
916 SvREFCNT_dec (GvAV (PL_defgv)); 969 SvREFCNT_dec (GvAV (PL_defgv));
917 SvREFCNT_dec (GvSV (PL_errgv)); 970 SvREFCNT_dec (GvSV (PL_errgv));
918 SvREFCNT_dec (PL_defoutgv); 971 SvREFCNT_dec (PL_defoutgv);
919 SvREFCNT_dec (PL_rs); 972 SvREFCNT_dec (PL_rs);
920 SvREFCNT_dec (GvSV (irsgv)); 973 SvREFCNT_dec (GvSV (irsgv));
974 SvREFCNT_dec (GvHV (PL_hintgv));
921 975
922 SvREFCNT_dec (PL_diehook); 976 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook); 977 SvREFCNT_dec (PL_warnhook);
924 978
925 SvREFCNT_dec (coro->saved_deffh); 979 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 980 SvREFCNT_dec (coro->rouse_cb);
981 SvREFCNT_dec (coro->invoke_cb);
982 SvREFCNT_dec (coro->invoke_av);
927 983
928 coro_destruct_stacks (aTHX); 984 coro_destruct_stacks (aTHX);
929} 985}
930 986
931INLINE void 987INLINE void
… …
941static int 997static int
942runops_trace (pTHX) 998runops_trace (pTHX)
943{ 999{
944 COP *oldcop = 0; 1000 COP *oldcop = 0;
945 int oldcxix = -2; 1001 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1002
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1003 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1004 {
951 PERL_ASYNC_CHECK (); 1005 PERL_ASYNC_CHECK ();
952 1006
953 if (cctx->flags & CC_TRACE_ALL) 1007 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1008 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1009 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1010 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1011 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1012 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1013 AV *av = newAV (); /* return values */
960 SV **cb; 1014 SV **cb;
… …
997 1051
998 if (PL_curcop != &PL_compiling) 1052 if (PL_curcop != &PL_compiling)
999 { 1053 {
1000 SV **cb; 1054 SV **cb;
1001 1055
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1056 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1057 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1058 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1059
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1060 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1061 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1062 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1063 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1064 SV *fullname = sv_2mortal (newSV (0));
1012 1065
1013 if (isGV (gv)) 1066 if (isGV (gv))
… …
1018 SAVETMPS; 1071 SAVETMPS;
1019 EXTEND (SP, 3); 1072 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1073 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1074 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1075 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1076 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1077 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1078 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1079 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1080 SPAGAIN;
1028 FREETMPS; 1081 FREETMPS;
… …
1031 } 1084 }
1032 1085
1033 oldcxix = cxstack_ix; 1086 oldcxix = cxstack_ix;
1034 } 1087 }
1035 1088
1036 if (cctx->flags & CC_TRACE_LINE) 1089 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1090 {
1038 dSP; 1091 dSP;
1039 1092
1040 PL_runops = RUNOPS_DEFAULT; 1093 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1094 ENTER;
… …
1060 1113
1061 TAINT_NOT; 1114 TAINT_NOT;
1062 return 0; 1115 return 0;
1063} 1116}
1064 1117
1118static struct CoroSLF cctx_ssl_frame;
1119
1065static void 1120static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1121slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1122{
1068 ta->prev = (struct coro *)cctx;
1069 ta->next = 0; 1123 ta->prev = 0;
1070} 1124}
1071 1125
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1126static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1127slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1128{
1075/* also initialises PL_top_env */ 1129 *frame = cctx_ssl_frame;
1130
1131 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1132}
1133
1134/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1135static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1136cctx_prepare (pTHX)
1078{ 1137{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1138 PL_top_env = &PL_start_env;
1083 1139
1084 if (cctx->flags & CC_TRACE) 1140 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1141 PL_runops = runops_trace;
1086 1142
1087 Zero (&myop, 1, UNOP); 1143 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1144 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1145 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1146 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1147
1091 PUSHMARK (SP); 1148 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1149 cctx_ssl_frame = slf_frame;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1150
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1151 slf_frame.prepare = slf_prepare_set_stacklevel;
1095 PUTBACK; 1152 slf_frame.check = slf_check_set_stacklevel;
1096 PL_op = (OP *)&myop;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1153}
1100 1154
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1155/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1156INLINE void
1103transfer_tail (pTHX) 1157transfer_tail (pTHX)
1104{ 1158{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1159 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1160}
1121 1161
1122/* 1162/*
1123 * this is a _very_ stripped down perl interpreter ;) 1163 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1164 */
… …
1136 /* normally we would need to skip the entersub here */ 1176 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1177 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1178 /* PL_nop = PL_nop->op_next */
1139 1179
1140 /* inject a fake subroutine call to cctx_init */ 1180 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1181 cctx_prepare (aTHX);
1142 1182
1143 /* cctx_run is the alternative tail of transfer() */ 1183 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1184 transfer_tail (aTHX);
1146 1185
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1186 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1187 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1188 perl_run (PL_curinterp);
1189 /*
1190 * Unfortunately, there is no way to get at the return values of the
1191 * coro body here, as perl_run destroys these
1192 */
1150 1193
1151 /* 1194 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1195 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1196 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1197 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1198 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1199 * coroutine as Coro has no such concept.
1200 * This actually isn't valid with the pthread backend, but OSes requiring
1201 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1202 */
1158 PL_top_env = main_top_env; 1203 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1204 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1205 }
1161} 1206}
… …
1238cctx_destroy (coro_cctx *cctx) 1283cctx_destroy (coro_cctx *cctx)
1239{ 1284{
1240 if (!cctx) 1285 if (!cctx)
1241 return; 1286 return;
1242 1287
1288 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1289
1243 --cctx_count; 1290 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1291 coro_destroy (&cctx->cctx);
1245 1292
1246 /* coro_transfer creates new, empty cctx's */ 1293 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1294 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1352/** coroutine switching *****************************************************/
1306 1353
1307static void 1354static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1355transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1356{
1357 /* TODO: throwing up here is considered harmful */
1358
1310 if (expect_true (prev != next)) 1359 if (expect_true (prev != next))
1311 { 1360 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1361 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1362 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1363
1315 if (expect_false (next->flags & CF_RUNNING)) 1364 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1365 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1366
1318 if (expect_false (next->flags & CF_DESTROYED)) 1367 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1368 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1369
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1370#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1371 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1372 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1373#endif
1325 } 1374 }
1326} 1375}
1327 1376
1328/* always use the TRANSFER macro */ 1377/* always use the TRANSFER macro */
1329static void NOINLINE 1378static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1379transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1380{
1332 dSTACKLEVEL; 1381 dSTACKLEVEL;
1333 1382
1334 /* sometimes transfer is only called to set idle_sp */ 1383 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1384 if (expect_false (!prev))
1336 { 1385 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1386 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1387 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1388 }
1340 else if (expect_true (prev != next)) 1389 else if (expect_true (prev != next))
1341 { 1390 {
1342 coro_cctx *prev__cctx; 1391 coro_cctx *cctx_prev;
1343 1392
1344 if (expect_false (prev->flags & CF_NEW)) 1393 if (expect_false (prev->flags & CF_NEW))
1345 { 1394 {
1346 /* create a new empty/source context */ 1395 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1396 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1397 prev->flags |= CF_RUNNING;
1350 } 1398 }
1351 1399
1352 prev->flags &= ~CF_RUNNING; 1400 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1401 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1402
1357 /* first get rid of the old state */ 1403 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1404 save_perl (aTHX_ prev);
1359 1405
1360 if (expect_false (next->flags & CF_NEW)) 1406 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1411 coro_setup (aTHX_ next);
1366 } 1412 }
1367 else 1413 else
1368 load_perl (aTHX_ next); 1414 load_perl (aTHX_ next);
1369 1415
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1416 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1417 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1418 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1419 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1420 && !force_cctx
1377 )) 1421 ))
1378 { 1422 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1423 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1424 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1425
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1426 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1427 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1428 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1429 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1430 next->cctx = cctx_get (aTHX);
1389 1431
1390 cctx_put (prev__cctx); 1432 cctx_put (cctx_current);
1391 } 1433 }
1434 else
1435 prev->cctx = cctx_current;
1392 1436
1393 ++next->usecount; 1437 ++next->usecount;
1394 1438
1395 if (expect_true (!next->cctx)) 1439 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1440 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1441
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1442 next->cctx = 0;
1399 transfer_next = next;
1400 1443
1401 if (expect_false (prev__cctx != next->cctx)) 1444 if (expect_false (cctx_prev != cctx_current))
1402 { 1445 {
1403 prev__cctx->top_env = PL_top_env; 1446 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1447 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1448 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1449 }
1407 1450
1408 transfer_tail (aTHX); 1451 transfer_tail (aTHX);
1409 } 1452 }
1410} 1453}
… …
1417static int 1460static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1461coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1462{
1420 if (coro->flags & CF_DESTROYED) 1463 if (coro->flags & CF_DESTROYED)
1421 return 0; 1464 return 0;
1465
1466 if (coro->on_destroy)
1467 coro->on_destroy (aTHX_ coro);
1422 1468
1423 coro->flags |= CF_DESTROYED; 1469 coro->flags |= CF_DESTROYED;
1424 1470
1425 if (coro->flags & CF_READY) 1471 if (coro->flags & CF_READY)
1426 { 1472 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1473 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1474 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1475 --coro_nready;
1431 UNLOCK;
1432 } 1476 }
1433 else 1477 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1478 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1479
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1480 if (coro->mainstack
1481 && coro->mainstack != main_mainstack
1482 && coro->slot
1483 && !PL_dirty)
1437 { 1484 {
1438 struct coro temp; 1485 struct coro temp;
1439 1486
1440 if (coro->flags & CF_RUNNING) 1487 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1488
1443 save_perl (aTHX_ &temp); 1489 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1490 load_perl (aTHX_ coro);
1445 1491
1446 coro_destruct (aTHX_ coro); 1492 coro_destruct_perl (aTHX_ coro);
1447 1493
1448 load_perl (aTHX_ &temp); 1494 load_perl (aTHX_ &temp);
1449 1495
1450 coro->slot = 0; 1496 coro->slot = 0;
1451 } 1497 }
1452 1498
1453 cctx_destroy (coro->cctx); 1499 cctx_destroy (coro->cctx);
1500 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1501 SvREFCNT_dec (coro->args);
1502 SvREFCNT_dec (CORO_THROW);
1455 1503
1456 if (coro->next) coro->next->prev = coro->prev; 1504 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1505 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1506 if (coro == coro_first) coro_first = coro->next;
1459 1507
… …
1513 1561
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1562 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1563 TRANSFER (ta, 1);
1516} 1564}
1517 1565
1566/*****************************************************************************/
1567/* gensub: simple closure generation utility */
1568
1569#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1570
1571/* create a closure from XS, returns a code reference */
1572/* the arg can be accessed via GENSUB_ARG from the callback */
1573/* the callback must use dXSARGS/XSRETURN */
1574static SV *
1575gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1576{
1577 CV *cv = (CV *)newSV (0);
1578
1579 sv_upgrade ((SV *)cv, SVt_PVCV);
1580
1581 CvANON_on (cv);
1582 CvISXSUB_on (cv);
1583 CvXSUB (cv) = xsub;
1584 GENSUB_ARG = arg;
1585
1586 return newRV_noinc ((SV *)cv);
1587}
1588
1518/** Coro ********************************************************************/ 1589/** Coro ********************************************************************/
1519 1590
1520static void 1591INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1592coro_enq (pTHX_ struct coro *coro)
1522{ 1593{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1594 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1595}
1525 1596
1526static SV * 1597INLINE SV *
1527coro_deq (pTHX) 1598coro_deq (pTHX)
1528{ 1599{
1529 int prio; 1600 int prio;
1530 1601
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1602 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1540{ 1611{
1541 struct coro *coro; 1612 struct coro *coro;
1542 SV *sv_hook; 1613 SV *sv_hook;
1543 void (*xs_hook)(void); 1614 void (*xs_hook)(void);
1544 1615
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1616 coro = SvSTATE (coro_sv);
1549 1617
1550 if (coro->flags & CF_READY) 1618 if (coro->flags & CF_READY)
1551 return 0; 1619 return 0;
1552 1620
1553 coro->flags |= CF_READY; 1621 coro->flags |= CF_READY;
1554 1622
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1623 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1624 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1625
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1626 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1627 ++coro_nready;
1562 1628
1563 UNLOCK;
1564
1565 if (sv_hook) 1629 if (sv_hook)
1566 { 1630 {
1567 dSP; 1631 dSP;
1568 1632
1569 ENTER; 1633 ENTER;
1570 SAVETMPS; 1634 SAVETMPS;
1571 1635
1572 PUSHMARK (SP); 1636 PUSHMARK (SP);
1573 PUTBACK; 1637 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1638 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1639
1577 FREETMPS; 1640 FREETMPS;
1578 LEAVE; 1641 LEAVE;
1579 } 1642 }
1580 1643
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1651api_is_ready (pTHX_ SV *coro_sv)
1589{ 1652{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1653 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1654}
1592 1655
1656/* expects to own a reference to next->hv */
1593INLINE void 1657INLINE void
1594prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1658prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1659{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1660 SV *prev_sv = SvRV (coro_current);
1661
1640 ta->prev = SvSTATE (prev_sv); 1662 ta->prev = SvSTATE_hv (prev_sv);
1663 ta->next = next;
1664
1641 TRANSFER_CHECK (*ta); 1665 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1666
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1667 SvRV_set (coro_current, (SV *)next->hv);
1645 1668
1646 LOCK;
1647 free_coro_mortal (aTHX); 1669 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1670 coro_mortal = prev_sv;
1649 UNLOCK; 1671}
1672
1673static void
1674prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1675{
1676 for (;;)
1677 {
1678 SV *next_sv = coro_deq (aTHX);
1679
1680 if (expect_true (next_sv))
1681 {
1682 struct coro *next = SvSTATE_hv (next_sv);
1683
1684 /* cannot transfer to destroyed coros, skip and look for next */
1685 if (expect_false (next->flags & CF_DESTROYED))
1686 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1687 else
1688 {
1689 next->flags &= ~CF_READY;
1690 --coro_nready;
1691
1692 prepare_schedule_to (aTHX_ ta, next);
1693 break;
1694 }
1695 }
1696 else
1697 {
1698 /* nothing to schedule: call the idle handler */
1699 if (SvROK (sv_idle)
1700 && SvOBJECT (SvRV (sv_idle)))
1701 {
1702 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1703 api_ready (aTHX_ SvRV (sv_idle));
1704 --coro_nready;
1705 }
1706 else
1707 {
1708 dSP;
1709
1710 ENTER;
1711 SAVETMPS;
1712
1713 PUSHMARK (SP);
1714 PUTBACK;
1715 call_sv (sv_idle, G_VOID | G_DISCARD);
1716
1717 FREETMPS;
1718 LEAVE;
1719 }
1720 }
1721 }
1650} 1722}
1651 1723
1652INLINE void 1724INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1725prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1726{
… …
1675{ 1747{
1676 struct coro_transfer_args ta; 1748 struct coro_transfer_args ta;
1677 1749
1678 prepare_schedule (aTHX_ &ta); 1750 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1751 TRANSFER (ta, 1);
1752}
1753
1754static void
1755api_schedule_to (pTHX_ SV *coro_sv)
1756{
1757 struct coro_transfer_args ta;
1758 struct coro *next = SvSTATE (coro_sv);
1759
1760 SvREFCNT_inc_NN (coro_sv);
1761 prepare_schedule_to (aTHX_ &ta, next);
1680} 1762}
1681 1763
1682static int 1764static int
1683api_cede (pTHX) 1765api_cede (pTHX)
1684{ 1766{
… …
1713static void 1795static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1796api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1797{
1716 struct coro *coro = SvSTATE (coro_sv); 1798 struct coro *coro = SvSTATE (coro_sv);
1717 1799
1800 if (coro->flags & CF_RUNNING)
1801 croak ("cannot enable tracing on a running coroutine, caught");
1802
1718 if (flags & CC_TRACE) 1803 if (flags & CC_TRACE)
1719 { 1804 {
1720 if (!coro->cctx) 1805 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1806 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1807 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1808 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1809
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1810 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1811 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1812 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1813 {
… …
1733 else 1818 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1819 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1820 }
1736} 1821}
1737 1822
1738#if 0 1823static void
1824coro_call_on_destroy (pTHX_ struct coro *coro)
1825{
1826 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1827 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1828
1829 if (on_destroyp)
1830 {
1831 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1832
1833 while (AvFILLp (on_destroy) >= 0)
1834 {
1835 dSP; /* don't disturb outer sp */
1836 SV *cb = av_pop (on_destroy);
1837
1838 PUSHMARK (SP);
1839
1840 if (statusp)
1841 {
1842 int i;
1843 AV *status = (AV *)SvRV (*statusp);
1844 EXTEND (SP, AvFILLp (status) + 1);
1845
1846 for (i = 0; i <= AvFILLp (status); ++i)
1847 PUSHs (AvARRAY (status)[i]);
1848 }
1849
1850 PUTBACK;
1851 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1852 }
1853 }
1854}
1855
1856static void
1857slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1858{
1859 int i;
1860 HV *hv = (HV *)SvRV (coro_current);
1861 AV *av = newAV ();
1862
1863 av_extend (av, items - 1);
1864 for (i = 0; i < items; ++i)
1865 av_push (av, SvREFCNT_inc_NN (arg [i]));
1866
1867 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1868
1869 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1870 api_ready (aTHX_ sv_manager);
1871
1872 frame->prepare = prepare_schedule;
1873 frame->check = slf_check_repeat;
1874
1875 /* as a minor optimisation, we could unwind all stacks here */
1876 /* but that puts extra pressure on pp_slf, and is not worth much */
1877 /*coro_unwind_stacks (aTHX);*/
1878}
1879
1880/*****************************************************************************/
1881/* async pool handler */
1882
1739static int 1883static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1884slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1885{
1742 AV *padlist; 1886 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1887 struct coro *coro = (struct coro *)frame->data;
1744 1888
1745 abort (); 1889 if (!coro->invoke_cb)
1890 return 1; /* loop till we have invoke */
1891 else
1892 {
1893 hv_store (hv, "desc", sizeof ("desc") - 1,
1894 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1895
1896 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1897
1898 {
1899 dSP;
1900 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1901 PUTBACK;
1902 }
1903
1904 SvREFCNT_dec (GvAV (PL_defgv));
1905 GvAV (PL_defgv) = coro->invoke_av;
1906 coro->invoke_av = 0;
1907
1908 return 0;
1909 }
1910}
1911
1912static void
1913slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1914{
1915 HV *hv = (HV *)SvRV (coro_current);
1916 struct coro *coro = SvSTATE_hv ((SV *)hv);
1917
1918 if (expect_true (coro->saved_deffh))
1919 {
1920 /* subsequent iteration */
1921 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1922 coro->saved_deffh = 0;
1923
1924 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1925 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1926 {
1927 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1928 coro->invoke_av = newAV ();
1929
1930 frame->prepare = prepare_nop;
1931 }
1932 else
1933 {
1934 av_clear (GvAV (PL_defgv));
1935 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1936
1937 coro->prio = 0;
1938
1939 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1940 api_trace (aTHX_ coro_current, 0);
1941
1942 frame->prepare = prepare_schedule;
1943 av_push (av_async_pool, SvREFCNT_inc (hv));
1944 }
1945 }
1946 else
1947 {
1948 /* first iteration, simply fall through */
1949 frame->prepare = prepare_nop;
1950 }
1951
1952 frame->check = slf_check_pool_handler;
1953 frame->data = (void *)coro;
1954}
1955
1956/*****************************************************************************/
1957/* rouse callback */
1958
1959#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1960
1961static void
1962coro_rouse_callback (pTHX_ CV *cv)
1963{
1964 dXSARGS;
1965 SV *data = (SV *)GENSUB_ARG;
1966
1967 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1968 {
1969 /* first call, set args */
1970 AV *av = newAV ();
1971 SV *coro = SvRV (data);
1972
1973 SvRV_set (data, (SV *)av);
1974 api_ready (aTHX_ coro);
1975 SvREFCNT_dec (coro);
1976
1977 /* better take a full copy of the arguments */
1978 while (items--)
1979 av_store (av, items, newSVsv (ST (items)));
1980 }
1981
1982 XSRETURN_EMPTY;
1983}
1984
1985static int
1986slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1987{
1988 SV *data = (SV *)frame->data;
1989
1990 if (CORO_THROW)
1991 return 0;
1992
1993 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1994 return 1;
1995
1996 /* now push all results on the stack */
1997 {
1998 dSP;
1999 AV *av = (AV *)SvRV (data);
2000 int i;
2001
2002 EXTEND (SP, AvFILLp (av) + 1);
2003 for (i = 0; i <= AvFILLp (av); ++i)
2004 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2005
2006 /* we have stolen the elements, so ste length to zero and free */
2007 AvFILLp (av) = -1;
2008 av_undef (av);
2009
2010 PUTBACK;
2011 }
1746 2012
1747 return 0; 2013 return 0;
1748} 2014}
1749 2015
1750static MGVTBL coro_gensub_vtbl = { 2016static void
1751 0, 0, 0, 0, 2017slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2018{
1753}; 2019 SV *cb;
1754#endif 2020
2021 if (items)
2022 cb = arg [0];
2023 else
2024 {
2025 struct coro *coro = SvSTATE_current;
2026
2027 if (!coro->rouse_cb)
2028 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2029
2030 cb = sv_2mortal (coro->rouse_cb);
2031 coro->rouse_cb = 0;
2032 }
2033
2034 if (!SvROK (cb)
2035 || SvTYPE (SvRV (cb)) != SVt_PVCV
2036 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2037 croak ("Coro::rouse_wait called with illegal callback argument,");
2038
2039 {
2040 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2041 SV *data = (SV *)GENSUB_ARG;
2042
2043 frame->data = (void *)data;
2044 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2045 frame->check = slf_check_rouse_wait;
2046 }
2047}
2048
2049static SV *
2050coro_new_rouse_cb (pTHX)
2051{
2052 HV *hv = (HV *)SvRV (coro_current);
2053 struct coro *coro = SvSTATE_hv (hv);
2054 SV *data = newRV_inc ((SV *)hv);
2055 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2056
2057 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2058 SvREFCNT_dec (data); /* magicext increases the refcount */
2059
2060 SvREFCNT_dec (coro->rouse_cb);
2061 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2062
2063 return cb;
2064}
2065
2066/*****************************************************************************/
2067/* schedule-like-function opcode (SLF) */
2068
2069static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2070static const CV *slf_cv;
2071static SV **slf_argv;
2072static int slf_argc, slf_arga; /* count, allocated */
2073static I32 slf_ax; /* top of stack, for restore */
2074
2075/* this restores the stack in the case we patched the entersub, to */
2076/* recreate the stack frame as perl will on following calls */
2077/* since entersub cleared the stack */
2078static OP *
2079pp_restore (pTHX)
2080{
2081 int i;
2082 SV **SP = PL_stack_base + slf_ax;
2083
2084 PUSHMARK (SP);
2085
2086 EXTEND (SP, slf_argc + 1);
2087
2088 for (i = 0; i < slf_argc; ++i)
2089 PUSHs (sv_2mortal (slf_argv [i]));
2090
2091 PUSHs ((SV *)CvGV (slf_cv));
2092
2093 RETURNOP (slf_restore.op_first);
2094}
2095
2096static void
2097slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2098{
2099 SV **arg = (SV **)slf_frame.data;
2100
2101 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2102}
2103
2104static void
2105slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 if (items != 2)
2108 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2109
2110 frame->prepare = slf_prepare_transfer;
2111 frame->check = slf_check_nop;
2112 frame->data = (void *)arg; /* let's hope it will stay valid */
2113}
2114
2115static void
2116slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2117{
2118 frame->prepare = prepare_schedule;
2119 frame->check = slf_check_nop;
2120}
2121
2122static void
2123slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2124{
2125 struct coro *next = (struct coro *)slf_frame.data;
2126
2127 SvREFCNT_inc_NN (next->hv);
2128 prepare_schedule_to (aTHX_ ta, next);
2129}
2130
2131static void
2132slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 if (!items)
2135 croak ("Coro::schedule_to expects a coroutine argument, caught");
2136
2137 frame->data = (void *)SvSTATE (arg [0]);
2138 frame->prepare = slf_prepare_schedule_to;
2139 frame->check = slf_check_nop;
2140}
2141
2142static void
2143slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2144{
2145 api_ready (aTHX_ SvRV (coro_current));
2146
2147 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2148}
2149
2150static void
2151slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2152{
2153 frame->prepare = prepare_cede;
2154 frame->check = slf_check_nop;
2155}
2156
2157static void
2158slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2159{
2160 frame->prepare = prepare_cede_notself;
2161 frame->check = slf_check_nop;
2162}
2163
2164/*
2165 * these not obviously related functions are all rolled into one
2166 * function to increase chances that they all will call transfer with the same
2167 * stack offset
2168 * SLF stands for "schedule-like-function".
2169 */
2170static OP *
2171pp_slf (pTHX)
2172{
2173 I32 checkmark; /* mark SP to see how many elements check has pushed */
2174
2175 /* set up the slf frame, unless it has already been set-up */
2176 /* the latter happens when a new coro has been started */
2177 /* or when a new cctx was attached to an existing coroutine */
2178 if (expect_true (!slf_frame.prepare))
2179 {
2180 /* first iteration */
2181 dSP;
2182 SV **arg = PL_stack_base + TOPMARK + 1;
2183 int items = SP - arg; /* args without function object */
2184 SV *gv = *sp;
2185
2186 /* do a quick consistency check on the "function" object, and if it isn't */
2187 /* for us, divert to the real entersub */
2188 if (SvTYPE (gv) != SVt_PVGV
2189 || !GvCV (gv)
2190 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2191 return PL_ppaddr[OP_ENTERSUB](aTHX);
2192
2193 if (!(PL_op->op_flags & OPf_STACKED))
2194 {
2195 /* ampersand-form of call, use @_ instead of stack */
2196 AV *av = GvAV (PL_defgv);
2197 arg = AvARRAY (av);
2198 items = AvFILLp (av) + 1;
2199 }
2200
2201 /* now call the init function, which needs to set up slf_frame */
2202 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2203 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2204
2205 /* pop args */
2206 SP = PL_stack_base + POPMARK;
2207
2208 PUTBACK;
2209 }
2210
2211 /* now that we have a slf_frame, interpret it! */
2212 /* we use a callback system not to make the code needlessly */
2213 /* complicated, but so we can run multiple perl coros from one cctx */
2214
2215 do
2216 {
2217 struct coro_transfer_args ta;
2218
2219 slf_frame.prepare (aTHX_ &ta);
2220 TRANSFER (ta, 0);
2221
2222 checkmark = PL_stack_sp - PL_stack_base;
2223 }
2224 while (slf_frame.check (aTHX_ &slf_frame));
2225
2226 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2227
2228 /* exception handling */
2229 if (expect_false (CORO_THROW))
2230 {
2231 SV *exception = sv_2mortal (CORO_THROW);
2232
2233 CORO_THROW = 0;
2234 sv_setsv (ERRSV, exception);
2235 croak (0);
2236 }
2237
2238 /* return value handling - mostly like entersub */
2239 /* make sure we put something on the stack in scalar context */
2240 if (GIMME_V == G_SCALAR)
2241 {
2242 dSP;
2243 SV **bot = PL_stack_base + checkmark;
2244
2245 if (sp == bot) /* too few, push undef */
2246 bot [1] = &PL_sv_undef;
2247 else if (sp != bot + 1) /* too many, take last one */
2248 bot [1] = *sp;
2249
2250 SP = bot + 1;
2251
2252 PUTBACK;
2253 }
2254
2255 return NORMAL;
2256}
2257
2258static void
2259api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2260{
2261 int i;
2262 SV **arg = PL_stack_base + ax;
2263 int items = PL_stack_sp - arg + 1;
2264
2265 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2266
2267 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2268 && PL_op->op_ppaddr != pp_slf)
2269 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2270
2271 CvFLAGS (cv) |= CVf_SLF;
2272 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2273 slf_cv = cv;
2274
2275 /* we patch the op, and then re-run the whole call */
2276 /* we have to put the same argument on the stack for this to work */
2277 /* and this will be done by pp_restore */
2278 slf_restore.op_next = (OP *)&slf_restore;
2279 slf_restore.op_type = OP_CUSTOM;
2280 slf_restore.op_ppaddr = pp_restore;
2281 slf_restore.op_first = PL_op;
2282
2283 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2284
2285 if (PL_op->op_flags & OPf_STACKED)
2286 {
2287 if (items > slf_arga)
2288 {
2289 slf_arga = items;
2290 free (slf_argv);
2291 slf_argv = malloc (slf_arga * sizeof (SV *));
2292 }
2293
2294 slf_argc = items;
2295
2296 for (i = 0; i < items; ++i)
2297 slf_argv [i] = SvREFCNT_inc (arg [i]);
2298 }
2299 else
2300 slf_argc = 0;
2301
2302 PL_op->op_ppaddr = pp_slf;
2303 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2304
2305 PL_op = (OP *)&slf_restore;
2306}
1755 2307
1756/*****************************************************************************/ 2308/*****************************************************************************/
1757/* PerlIO::cede */ 2309/* PerlIO::cede */
1758 2310
1759typedef struct 2311typedef struct
… …
1827 PerlIOBuf_get_cnt, 2379 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2380 PerlIOBuf_set_ptrcnt,
1829}; 2381};
1830 2382
1831/*****************************************************************************/ 2383/*****************************************************************************/
2384/* Coro::Semaphore & Coro::Signal */
1832 2385
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2386static SV *
1843pp_restore (pTHX) 2387coro_waitarray_new (pTHX_ int count)
1844{ 2388{
1845 dSP; 2389 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2390 AV *av = newAV ();
2391 SV **ary;
1846 2392
1847 PUSHMARK (SP); 2393 /* unfortunately, building manually saves memory */
2394 Newx (ary, 2, SV *);
2395 AvALLOC (av) = ary;
2396#if PERL_VERSION_ATLEAST (5,10,0)
2397 AvARRAY (av) = ary;
2398#else
2399 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2400 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2401 SvPVX ((SV *)av) = (char *)ary;
2402#endif
2403 AvMAX (av) = 1;
2404 AvFILLp (av) = 0;
2405 ary [0] = newSViv (count);
1848 2406
1849 EXTEND (SP, 3); 2407 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2408}
1856 2409
1857static void 2410/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2411
1864static void 2412static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2413coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2414{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2415 SV *count_sv = AvARRAY (av)[0];
1868} 2416 IV count = SvIVX (count_sv);
1869 2417
1870static void 2418 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2419 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2420
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2421 /* now wake up as many waiters as are expected to lock */
1877} 2422 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2423 {
1912 /* first iteration */ 2424 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2425
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2426 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2427 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2428 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2429 cb = av_shift (av);
1923 2430
1924 /* pop args */ 2431 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2432 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2433 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2434 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2435 }
1934 2436 else if (SvTYPE (cb) == SVt_PVCV)
2437 {
2438 dSP;
2439 PUSHMARK (SP);
2440 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2441 PUTBACK;
2442 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2443 }
1936 2444
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2445 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2446 }
1949 struct coro_transfer_args ta; 2447}
1950 2448
1951 slf_frame.prepare (aTHX_ &ta); 2449static void
1952 TRANSFER (ta, 0); 2450coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2451{
2452 /* call $sem->adjust (0) to possibly wake up some other waiters */
2453 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2454}
1953 2455
1954 checkmark = PL_stack_sp - PL_stack_base; 2456static int
2457slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2458{
2459 AV *av = (AV *)frame->data;
2460 SV *count_sv = AvARRAY (av)[0];
2461
2462 /* if we are about to throw, don't actually acquire the lock, just throw */
2463 if (CORO_THROW)
2464 return 0;
2465 else if (SvIVX (count_sv) > 0)
1955 } 2466 {
1956 while (slf_frame.check (aTHX)); 2467 SvSTATE_current->on_destroy = 0;
1957 2468
2469 if (acquire)
2470 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2471 else
2472 coro_semaphore_adjust (aTHX_ av, 0);
2473
2474 return 0;
2475 }
2476 else
2477 {
2478 int i;
2479 /* if we were woken up but can't down, we look through the whole */
2480 /* waiters list and only add us if we aren't in there already */
2481 /* this avoids some degenerate memory usage cases */
2482
2483 for (i = 1; i <= AvFILLp (av); ++i)
2484 if (AvARRAY (av)[i] == SvRV (coro_current))
2485 return 1;
2486
2487 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2488 return 1;
2489 }
2490}
2491
2492static int
2493slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2494{
2495 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2496}
2497
2498static int
2499slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2500{
2501 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2502}
2503
2504static void
2505slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2506{
2507 AV *av = (AV *)SvRV (arg [0]);
2508
2509 if (SvIVX (AvARRAY (av)[0]) > 0)
2510 {
2511 frame->data = (void *)av;
2512 frame->prepare = prepare_nop;
2513 }
2514 else
2515 {
2516 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2517
2518 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2519 frame->prepare = prepare_schedule;
2520
2521 /* to avoid race conditions when a woken-up coro gets terminated */
2522 /* we arrange for a temporary on_destroy that calls adjust (0) */
2523 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2524 }
2525}
2526
2527static void
2528slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2529{
2530 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2531 frame->check = slf_check_semaphore_down;
2532}
2533
2534static void
2535slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2536{
2537 if (items >= 2)
2538 {
2539 /* callback form */
2540 AV *av = (AV *)SvRV (arg [0]);
2541 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2542
2543 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2544
2545 if (SvIVX (AvARRAY (av)[0]) > 0)
2546 coro_semaphore_adjust (aTHX_ av, 0);
2547
2548 frame->prepare = prepare_nop;
2549 frame->check = slf_check_nop;
2550 }
2551 else
2552 {
2553 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2554 frame->check = slf_check_semaphore_wait;
2555 }
2556}
2557
2558/* signal */
2559
2560static void
2561coro_signal_wake (pTHX_ AV *av, int count)
2562{
2563 SvIVX (AvARRAY (av)[0]) = 0;
2564
2565 /* now signal count waiters */
2566 while (count > 0 && AvFILLp (av) > 0)
2567 {
2568 SV *cb;
2569
2570 /* swap first two elements so we can shift a waiter */
2571 cb = AvARRAY (av)[0];
2572 AvARRAY (av)[0] = AvARRAY (av)[1];
2573 AvARRAY (av)[1] = cb;
2574
2575 cb = av_shift (av);
2576
2577 api_ready (aTHX_ cb);
2578 sv_setiv (cb, 0); /* signal waiter */
2579 SvREFCNT_dec (cb);
2580
2581 --count;
2582 }
2583}
2584
2585static int
2586slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2587{
2588 /* if we are about to throw, also stop waiting */
2589 return SvROK ((SV *)frame->data) && !CORO_THROW;
2590}
2591
2592static void
2593slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2594{
2595 AV *av = (AV *)SvRV (arg [0]);
2596
2597 if (SvIVX (AvARRAY (av)[0]))
2598 {
2599 SvIVX (AvARRAY (av)[0]) = 0;
2600 frame->prepare = prepare_nop;
2601 frame->check = slf_check_nop;
2602 }
2603 else
2604 {
2605 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2606
2607 av_push (av, waiter);
2608
2609 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2610 frame->prepare = prepare_schedule;
2611 frame->check = slf_check_signal_wait;
2612 }
2613}
2614
2615/*****************************************************************************/
2616/* Coro::AIO */
2617
2618#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2619
2620/* helper storage struct */
2621struct io_state
2622{
2623 int errorno;
2624 I32 laststype; /* U16 in 5.10.0 */
2625 int laststatval;
2626 Stat_t statcache;
2627};
2628
2629static void
2630coro_aio_callback (pTHX_ CV *cv)
2631{
2632 dXSARGS;
2633 AV *state = (AV *)GENSUB_ARG;
2634 SV *coro = av_pop (state);
2635 SV *data_sv = newSV (sizeof (struct io_state));
2636
2637 av_extend (state, items - 1);
2638
2639 sv_upgrade (data_sv, SVt_PV);
2640 SvCUR_set (data_sv, sizeof (struct io_state));
2641 SvPOK_only (data_sv);
2642
2643 {
2644 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2645
2646 data->errorno = errno;
2647 data->laststype = PL_laststype;
2648 data->laststatval = PL_laststatval;
2649 data->statcache = PL_statcache;
2650 }
2651
2652 /* now build the result vector out of all the parameters and the data_sv */
2653 {
2654 int i;
2655
2656 for (i = 0; i < items; ++i)
2657 av_push (state, SvREFCNT_inc_NN (ST (i)));
2658 }
2659
2660 av_push (state, data_sv);
2661
2662 api_ready (aTHX_ coro);
2663 SvREFCNT_dec (coro);
2664 SvREFCNT_dec ((AV *)state);
2665}
2666
2667static int
2668slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2669{
2670 AV *state = (AV *)frame->data;
2671
2672 /* if we are about to throw, return early */
2673 /* this does not cancel the aio request, but at least */
2674 /* it quickly returns */
2675 if (CORO_THROW)
2676 return 0;
2677
2678 /* one element that is an RV? repeat! */
2679 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2680 return 1;
2681
2682 /* restore status */
2683 {
2684 SV *data_sv = av_pop (state);
2685 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2686
2687 errno = data->errorno;
2688 PL_laststype = data->laststype;
2689 PL_laststatval = data->laststatval;
2690 PL_statcache = data->statcache;
2691
2692 SvREFCNT_dec (data_sv);
2693 }
2694
2695 /* push result values */
1958 { 2696 {
1959 dSP; 2697 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2698 int i;
1961 int gimme = GIMME_V;
1962 2699
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2700 EXTEND (SP, AvFILLp (state) + 1);
1964 2701 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2702 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2703
1974 PUTBACK; 2704 PUTBACK;
1975 } 2705 }
1976 2706
1977 return NORMAL; 2707 return 0;
1978} 2708}
1979 2709
1980static void 2710static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2711slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2712{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2713 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2714 SV *coro_hv = SvRV (coro_current);
2715 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2716
1986 if (items > 2) 2717 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2718 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2719
1989 CvFLAGS (cv) |= CVf_SLF; 2720 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2721 if (coro->prio)
1991 slf_cv = cv; 2722 {
2723 dSP;
1992 2724
1993 /* we patch the op, and then re-run the whole call */ 2725 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2726 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2727
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2728 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2729 {
2730 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2731 prio_sv = newSViv (0);
2732 }
2003 2733
2004 PL_op->op_ppaddr = pp_slf; 2734 PUSHMARK (SP);
2735 sv_setiv (prio_sv, coro->prio);
2736 XPUSHs (prio_sv);
2005 2737
2006 PL_op = (OP *)&slf_restore; 2738 PUTBACK;
2739 call_sv (prio_cv, G_VOID | G_DISCARD);
2740 }
2741
2742 /* now call the original request */
2743 {
2744 dSP;
2745 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2746 int i;
2747
2748 PUSHMARK (SP);
2749
2750 /* first push all args to the stack */
2751 EXTEND (SP, items + 1);
2752
2753 for (i = 0; i < items; ++i)
2754 PUSHs (arg [i]);
2755
2756 /* now push the callback closure */
2757 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2758
2759 /* now call the AIO function - we assume our request is uncancelable */
2760 PUTBACK;
2761 call_sv ((SV *)req, G_VOID | G_DISCARD);
2762 }
2763
2764 /* now that the requets is going, we loop toll we have a result */
2765 frame->data = (void *)state;
2766 frame->prepare = prepare_schedule;
2767 frame->check = slf_check_aio_req;
2007} 2768}
2769
2770static void
2771coro_aio_req_xs (pTHX_ CV *cv)
2772{
2773 dXSARGS;
2774
2775 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2776
2777 XSRETURN_EMPTY;
2778}
2779
2780/*****************************************************************************/
2781
2782#if CORO_CLONE
2783# include "clone.c"
2784#endif
2008 2785
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2786MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2787
2011PROTOTYPES: DISABLE 2788PROTOTYPES: DISABLE
2012 2789
2013BOOT: 2790BOOT:
2014{ 2791{
2015#ifdef USE_ITHREADS 2792#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2793# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2794 coro_thx = PERL_GET_CONTEXT;
2019# endif 2795# endif
2020#endif 2796#endif
2021 BOOT_PAGESIZE; 2797 BOOT_PAGESIZE;
2798
2799 cctx_current = cctx_new_empty ();
2022 2800
2023 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2801 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2024 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2802 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2025 2803
2026 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2804 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2042 main_top_env = PL_top_env; 2820 main_top_env = PL_top_env;
2043 2821
2044 while (main_top_env->je_prev) 2822 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 2823 main_top_env = main_top_env->je_prev;
2046 2824
2825 {
2826 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2827
2828 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2829 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2830
2831 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2832 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2833 }
2834
2047 coroapi.ver = CORO_API_VERSION; 2835 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 2836 coroapi.rev = CORO_API_REVISION;
2837
2049 coroapi.transfer = api_transfer; 2838 coroapi.transfer = api_transfer;
2839
2840 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 2841 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 2842 coroapi.prepare_nop = prepare_nop;
2843 coroapi.prepare_schedule = prepare_schedule;
2844 coroapi.prepare_cede = prepare_cede;
2845 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 2846
2053 { 2847 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2848 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 2849
2056 if (!svp) croak ("Time::HiRes is required"); 2850 if (!svp) croak ("Time::HiRes is required");
… …
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2856 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2063} 2857}
2064 2858
2065SV * 2859SV *
2066new (char *klass, ...) 2860new (char *klass, ...)
2861 ALIAS:
2862 Coro::new = 1
2067 CODE: 2863 CODE:
2068{ 2864{
2069 struct coro *coro; 2865 struct coro *coro;
2070 MAGIC *mg; 2866 MAGIC *mg;
2071 HV *hv; 2867 HV *hv;
2868 CV *cb;
2072 int i; 2869 int i;
2870
2871 if (items > 1)
2872 {
2873 cb = coro_sv_2cv (aTHX_ ST (1));
2874
2875 if (!ix)
2876 {
2877 if (CvISXSUB (cb))
2878 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2879
2880 if (!CvROOT (cb))
2881 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2882 }
2883 }
2073 2884
2074 Newz (0, coro, 1, struct coro); 2885 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV (); 2886 coro->args = newAV ();
2076 coro->flags = CF_NEW; 2887 coro->flags = CF_NEW;
2077 2888
… …
2082 coro->hv = hv = newHV (); 2893 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2894 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP; 2895 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2896 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086 2897
2898 if (items > 1)
2899 {
2087 av_extend (coro->args, items - 1); 2900 av_extend (coro->args, items - 1 + ix - 1);
2901
2902 if (ix)
2903 {
2904 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2905 cb = cv_coro_run;
2906 }
2907
2908 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2909
2088 for (i = 1; i < items; i++) 2910 for (i = 2; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i))); 2911 av_push (coro->args, newSVsv (ST (i)));
2912 }
2090} 2913}
2091 OUTPUT: 2914 OUTPUT:
2092 RETVAL 2915 RETVAL
2093 2916
2094void 2917void
2095_set_stacklevel (...) 2918transfer (...)
2919 PROTOTYPE: $$
2096 CODE: 2920 CODE:
2097{ 2921 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101
2102void
2103transfer (...)
2104 CODE:
2105{
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 2922
2110bool 2923bool
2111_destroy (SV *coro_sv) 2924_destroy (SV *coro_sv)
2112 CODE: 2925 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2926 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2118_exit (int code) 2931_exit (int code)
2119 PROTOTYPE: $ 2932 PROTOTYPE: $
2120 CODE: 2933 CODE:
2121 _exit (code); 2934 _exit (code);
2122 2935
2936SV *
2937clone (Coro::State coro)
2938 CODE:
2939{
2940#if CORO_CLONE
2941 struct coro *ncoro = coro_clone (aTHX_ coro);
2942 MAGIC *mg;
2943 /* TODO: too much duplication */
2944 ncoro->hv = newHV ();
2945 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2946 mg->mg_flags |= MGf_DUP;
2947 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2948#else
2949 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2950#endif
2951}
2952 OUTPUT:
2953 RETVAL
2954
2123int 2955int
2124cctx_stacksize (int new_stacksize = 0) 2956cctx_stacksize (int new_stacksize = 0)
2957 PROTOTYPE: ;$
2125 CODE: 2958 CODE:
2126 RETVAL = cctx_stacksize; 2959 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 2960 if (new_stacksize)
2128 { 2961 {
2129 cctx_stacksize = new_stacksize; 2962 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 2965 OUTPUT:
2133 RETVAL 2966 RETVAL
2134 2967
2135int 2968int
2136cctx_max_idle (int max_idle = 0) 2969cctx_max_idle (int max_idle = 0)
2970 PROTOTYPE: ;$
2137 CODE: 2971 CODE:
2138 RETVAL = cctx_max_idle; 2972 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 2973 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 2974 cctx_max_idle = max_idle;
2141 OUTPUT: 2975 OUTPUT:
2142 RETVAL 2976 RETVAL
2143 2977
2144int 2978int
2145cctx_count () 2979cctx_count ()
2980 PROTOTYPE:
2146 CODE: 2981 CODE:
2147 RETVAL = cctx_count; 2982 RETVAL = cctx_count;
2148 OUTPUT: 2983 OUTPUT:
2149 RETVAL 2984 RETVAL
2150 2985
2151int 2986int
2152cctx_idle () 2987cctx_idle ()
2988 PROTOTYPE:
2153 CODE: 2989 CODE:
2154 RETVAL = cctx_idle; 2990 RETVAL = cctx_idle;
2155 OUTPUT: 2991 OUTPUT:
2156 RETVAL 2992 RETVAL
2157 2993
2158void 2994void
2159list () 2995list ()
2996 PROTOTYPE:
2160 PPCODE: 2997 PPCODE:
2161{ 2998{
2162 struct coro *coro; 2999 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 3000 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 3001 if (coro->hv)
… …
2226 3063
2227void 3064void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 3065throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 3066 PROTOTYPE: $;$
2230 CODE: 3067 CODE:
3068{
3069 struct coro *current = SvSTATE_current;
3070 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 3071 SvREFCNT_dec (*throwp);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3072 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3073}
2233 3074
2234void 3075void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3076api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3077 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 3078 C_ARGS: aTHX_ coro, flags
2237 3079
2238SV * 3080SV *
2239has_cctx (Coro::State coro) 3081has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 3082 PROTOTYPE: $
2241 CODE: 3083 CODE:
2242 RETVAL = boolSV (!!coro->cctx); 3084 /* maybe manage the running flag differently */
3085 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2243 OUTPUT: 3086 OUTPUT:
2244 RETVAL 3087 RETVAL
2245 3088
2246int 3089int
2247is_traced (Coro::State coro) 3090is_traced (Coro::State coro)
… …
2265 OUTPUT: 3108 OUTPUT:
2266 RETVAL 3109 RETVAL
2267 3110
2268void 3111void
2269force_cctx () 3112force_cctx ()
3113 PROTOTYPE:
2270 CODE: 3114 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 3115 cctx_current->idle_sp = 0;
2273 3116
2274void 3117void
2275swap_defsv (Coro::State self) 3118swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 3119 PROTOTYPE: $
2277 ALIAS: 3120 ALIAS:
2278 swap_defav = 1 3121 swap_defav = 1
2279 CODE: 3122 CODE:
2280 if (!self->slot) 3123 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 3124 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 3125 else
2283 { 3126 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3127 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3128 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 3129
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 3130 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 3131 }
2289 3132
3133
2290MODULE = Coro::State PACKAGE = Coro 3134MODULE = Coro::State PACKAGE = Coro
2291 3135
2292BOOT: 3136BOOT:
2293{ 3137{
2294 int i; 3138 int i;
2295 3139
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3140 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3141 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 3142 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3143 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3144 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2301 SvREADONLY_on (coro_current); 3145 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3146 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3147 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3148 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3149
3150 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3151 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3152 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3153 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2302 3154
2303 coro_stash = gv_stashpv ("Coro", TRUE); 3155 coro_stash = gv_stashpv ("Coro", TRUE);
2304 3156
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3157 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2306 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3158 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2314 3166
2315 { 3167 {
2316 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3168 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2317 3169
2318 coroapi.schedule = api_schedule; 3170 coroapi.schedule = api_schedule;
3171 coroapi.schedule_to = api_schedule_to;
2319 coroapi.cede = api_cede; 3172 coroapi.cede = api_cede;
2320 coroapi.cede_notself = api_cede_notself; 3173 coroapi.cede_notself = api_cede_notself;
2321 coroapi.ready = api_ready; 3174 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 3175 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 3176 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 3177 coroapi.current = coro_current;
2325 3178
2326 GCoroAPI = &coroapi; 3179 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 3180 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 3181 SvREADONLY_on (sv);
2329 } 3182 }
2330} 3183}
2331 3184
2332void 3185void
3186terminate (...)
3187 CODE:
3188 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3189
3190void
2333schedule (...) 3191schedule (...)
2334 CODE: 3192 CODE:
2335{ 3193 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; 3194
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3195void
2338} 3196schedule_to (...)
3197 CODE:
3198 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3199
3200void
3201cede_to (...)
3202 CODE:
3203 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2339 3204
2340void 3205void
2341cede (...) 3206cede (...)
2342 CODE: 3207 CODE:
2343{ 3208 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 3209
2348void 3210void
2349cede_notself (...) 3211cede_notself (...)
2350 CODE: 3212 CODE:
2351{ 3213 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop }; 3214
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items); 3215void
2354} 3216_cancel (Coro::State self)
3217 CODE:
3218 coro_state_destroy (aTHX_ self);
3219 coro_call_on_destroy (aTHX_ self);
2355 3220
2356void 3221void
2357_set_current (SV *current) 3222_set_current (SV *current)
2358 PROTOTYPE: $ 3223 PROTOTYPE: $
2359 CODE: 3224 CODE:
… …
2362 3227
2363void 3228void
2364_set_readyhook (SV *hook) 3229_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 3230 PROTOTYPE: $
2366 CODE: 3231 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 3232 SvREFCNT_dec (coro_readyhook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3233 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 3234
2372int 3235int
2373prio (Coro::State coro, int newprio = 0) 3236prio (Coro::State coro, int newprio = 0)
3237 PROTOTYPE: $;$
2374 ALIAS: 3238 ALIAS:
2375 nice = 1 3239 nice = 1
2376 CODE: 3240 CODE:
2377{ 3241{
2378 RETVAL = coro->prio; 3242 RETVAL = coro->prio;
… …
2405 CODE: 3269 CODE:
2406 RETVAL = coro_nready; 3270 RETVAL = coro_nready;
2407 OUTPUT: 3271 OUTPUT:
2408 RETVAL 3272 RETVAL
2409 3273
2410# for async_pool speedup
2411void 3274void
2412_pool_1 (SV *cb) 3275_pool_handler (...)
2413 CODE: 3276 CODE:
2414{ 3277 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current);
2417 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av;
2420 int i, len;
2421 3278
2422 if (!invoke) 3279void
3280async_pool (SV *cv, ...)
3281 PROTOTYPE: &@
3282 PPCODE:
3283{
3284 HV *hv = (HV *)av_pop (av_async_pool);
3285 AV *av = newAV ();
3286 SV *cb = ST (0);
3287 int i;
3288
3289 av_extend (av, items - 2);
3290 for (i = 1; i < items; ++i)
3291 av_push (av, SvREFCNT_inc_NN (ST (i)));
3292
3293 if ((SV *)hv == &PL_sv_undef)
2423 { 3294 {
2424 SV *old = PL_diehook; 3295 PUSHMARK (SP);
2425 PL_diehook = 0; 3296 EXTEND (SP, 2);
2426 SvREFCNT_dec (old); 3297 PUSHs (sv_Coro);
2427 croak ("\3async_pool terminate\2\n"); 3298 PUSHs ((SV *)cv_pool_handler);
3299 PUTBACK;
3300 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3301 SPAGAIN;
3302
3303 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2428 } 3304 }
2429 3305
2430 SvREFCNT_dec (coro->saved_deffh);
2431 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2432
2433 hv_store (hv, "desc", sizeof ("desc") - 1,
2434 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2435
2436 invoke_av = (AV *)SvRV (invoke);
2437 len = av_len (invoke_av);
2438
2439 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2440
2441 if (len > 0)
2442 { 3306 {
2443 av_fill (defav, len - 1); 3307 struct coro *coro = SvSTATE_hv (hv);
2444 for (i = 0; i < len; ++i) 3308
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3309 assert (!coro->invoke_cb);
3310 assert (!coro->invoke_av);
3311 coro->invoke_cb = SvREFCNT_inc (cb);
3312 coro->invoke_av = av;
2446 } 3313 }
2447 3314
3315 api_ready (aTHX_ (SV *)hv);
3316
3317 if (GIMME_V != G_VOID)
3318 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3319 else
2448 SvREFCNT_dec (invoke); 3320 SvREFCNT_dec (hv);
2449} 3321}
2450 3322
2451void 3323SV *
2452_pool_2 (SV *cb) 3324rouse_cb ()
3325 PROTOTYPE:
2453 CODE: 3326 CODE:
2454{ 3327 RETVAL = coro_new_rouse_cb (aTHX);
2455 struct coro *coro = SvSTATE (coro_current);
2456
2457 sv_setsv (cb, &PL_sv_undef);
2458
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 SV *old = PL_diehook;
2466 PL_diehook = 0;
2467 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n");
2469 }
2470
2471 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474
2475 coro->prio = 0;
2476
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0);
2479
2480 av_push (av_async_pool, newSVsv (coro_current));
2481}
2482
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV *
2494gensub (SV *sub, ...)
2495 PROTOTYPE: &;@
2496 CODE:
2497{
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3328 OUTPUT:
2527 RETVAL 3329 RETVAL
2528 3330
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3331void
2535_get_state (SV *self) 3332rouse_wait (...)
3333 PROTOTYPE: ;$
2536 PPCODE: 3334 PPCODE:
2537{ 3335 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545 3336
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550 3337
2551 av_extend (av, AvFILLp (defav) + 1 + 1); 3338MODULE = Coro::State PACKAGE = PerlIO::cede
2552 3339
2553 for (i = 0; i <= AvFILLp (defav); ++i) 3340BOOT:
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3341 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555 3342
2556 av_push (av, data_sv);
2557 3343
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3344MODULE = Coro::State PACKAGE = Coro::Semaphore
2559 3345
2560 api_ready (aTHX_ self); 3346SV *
2561} 3347new (SV *klass, SV *count = 0)
3348 CODE:
3349 RETVAL = sv_bless (
3350 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3351 GvSTASH (CvGV (cv))
3352 );
3353 OUTPUT:
3354 RETVAL
3355
3356# helper for Coro::Channel
3357SV *
3358_alloc (int count)
3359 CODE:
3360 RETVAL = coro_waitarray_new (aTHX_ count);
3361 OUTPUT:
3362 RETVAL
3363
3364SV *
3365count (SV *self)
3366 CODE:
3367 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3368 OUTPUT:
3369 RETVAL
2562 3370
2563void 3371void
2564_set_state (SV *state) 3372up (SV *self, int adjust = 1)
2565 PROTOTYPE: $ 3373 ALIAS:
3374 adjust = 1
3375 CODE:
3376 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3377
3378void
3379down (...)
3380 CODE:
3381 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3382
3383void
3384wait (...)
3385 CODE:
3386 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3387
3388void
3389try (SV *self)
3390 PPCODE:
3391{
3392 AV *av = (AV *)SvRV (self);
3393 SV *count_sv = AvARRAY (av)[0];
3394 IV count = SvIVX (count_sv);
3395
3396 if (count > 0)
3397 {
3398 --count;
3399 SvIVX (count_sv) = count;
3400 XSRETURN_YES;
3401 }
3402 else
3403 XSRETURN_NO;
3404}
3405
3406void
3407waiters (SV *self)
3408 PPCODE:
3409{
3410 AV *av = (AV *)SvRV (self);
3411 int wcount = AvFILLp (av) + 1 - 1;
3412
3413 if (GIMME_V == G_SCALAR)
3414 XPUSHs (sv_2mortal (newSViv (wcount)));
3415 else
3416 {
3417 int i;
3418 EXTEND (SP, wcount);
3419 for (i = 1; i <= wcount; ++i)
3420 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3421 }
3422}
3423
3424MODULE = Coro::State PACKAGE = Coro::Signal
3425
3426SV *
3427new (SV *klass)
2566 PPCODE: 3428 CODE:
3429 RETVAL = sv_bless (
3430 coro_waitarray_new (aTHX_ 0),
3431 GvSTASH (CvGV (cv))
3432 );
3433 OUTPUT:
3434 RETVAL
3435
3436void
3437wait (...)
3438 CODE:
3439 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3440
3441void
3442broadcast (SV *self)
3443 CODE:
2567{ 3444{
2568 AV *av = (AV *)SvRV (state); 3445 AV *av = (AV *)SvRV (self);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3446 coro_signal_wake (aTHX_ av, AvFILLp (av));
2570 int i; 3447}
2571 3448
2572 errno = data->errorno; 3449void
2573 PL_laststype = data->laststype; 3450send (SV *self)
2574 PL_laststatval = data->laststatval; 3451 CODE:
2575 PL_statcache = data->statcache; 3452{
3453 AV *av = (AV *)SvRV (self);
2576 3454
2577 EXTEND (SP, AvFILLp (av)); 3455 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3456 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3457 else
3458 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3459}
3460
3461IV
3462awaited (SV *self)
3463 CODE:
3464 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3465 OUTPUT:
3466 RETVAL
2581 3467
2582 3468
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3469MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3470
2585BOOT: 3471BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3472 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3473
2588SV * 3474void
2589_schedule (...) 3475_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3476 CODE:
2592{ 3477{
2593 static int incede; 3478 static int incede;
2594 3479
2595 api_cede_notself (aTHX); 3480 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3486 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3487 if (coro_nready >= incede)
2603 { 3488 {
2604 PUSHMARK (SP); 3489 PUSHMARK (SP);
2605 PUTBACK; 3490 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3491 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3492 }
2609 3493
2610 --incede; 3494 --incede;
2611} 3495}
2612 3496
2613 3497
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3498MODULE = Coro::State PACKAGE = Coro::AIO
2615 3499
2616BOOT: 3500void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3501_register (char *target, char *proto, SV *req)
3502 CODE:
3503{
3504 CV *req_cv = coro_sv_2cv (aTHX_ req);
3505 /* newXSproto doesn't return the CV on 5.8 */
3506 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3507 sv_setpv ((SV *)slf_cv, proto);
3508 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3509}
2618 3510

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