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Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
172 181
173static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 184static SV *rv_diehook;
176static SV *rv_warnhook; 185static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
178 187
179/* async_pool helper stuff */ 188/* async_pool helper stuff */
180static SV *sv_pool_rss; 189static SV *sv_pool_rss;
181static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
183 196
184/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
185static SV *sv_activity; 198static SV *sv_activity;
186 199
187static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 229 int valgrind_id;
217#endif 230#endif
218 unsigned char flags; 231 unsigned char flags;
219} coro_cctx; 232} coro_cctx;
220 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
221enum { 238enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
230{ 247{
231 SV *defsv; 248 SV *defsv;
232 AV *defav; 249 AV *defav;
233 SV *errsv; 250 SV *errsv;
234 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
235#define VAR(name,type) type name; 253#define VAR(name,type) type name;
236# include "state.h" 254# include "state.h"
237#undef VAR 255#undef VAR
238} perl_slots; 256} perl_slots;
239 257
… …
242/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
243struct coro { 261struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 263 coro_cctx *cctx;
246 264
247 /* process data */ 265 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 267 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
251 269
270 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 275 void (*on_destroy)(pTHX_ struct coro *coro);
257 276
258 /* statistics */ 277 /* statistics */
259 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
260 279
261 /* coro process data */ 280 /* coro process data */
262 int prio; 281 int prio;
263 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
264 284
265 /* async_pool */ 285 /* async_pool */
266 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
267 289
268 /* linked list */ 290 /* linked list */
269 struct coro *next, *prev; 291 struct coro *next, *prev;
270}; 292};
271 293
272typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
274 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
276 301
277/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
278 303
279#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
285 310
286/* for Coro.pm */ 311/* for Coro.pm */
287static SV *coro_current; 312static SV *coro_current;
288static SV *coro_readyhook; 313static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 316static struct coro *coro_first;
291#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
292 318
293/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
294 320
… …
320 get_hv (name, create); 346 get_hv (name, create);
321#endif 347#endif
322 return get_hv (name, create); 348 return get_hv (name, create);
323} 349}
324 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
325static AV * 412static AV *
326coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
327{ 414{
328 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
330 417
331 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 424#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 426 --AvFILLp (padlist);
340 427
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
343 430
344 return newpadlist; 431 return newpadlist;
345} 432}
346 433
347static void 434static void
348free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
349{ 436{
350 /* may be during global destruction */ 437 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
352 { 439 {
353 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
354 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
355 { 443 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
357 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 446 I32 j = AvFILLp (av);
359 SV *sv; 447
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 453 }
366 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
368 } 459 }
369} 460}
370 461
371static int 462static int
… …
380 471
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 473
383 return 0; 474 return 0;
384} 475}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 476
389static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 478 0, 0, 0, 0,
391 coro_cv_free 479 coro_cv_free
392}; 480};
393
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 481
443/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
444static void 483static void
445get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
446{ 485{
… …
452 else 491 else
453 { 492 {
454#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
461#else 500#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 502#endif
464 } 503 }
465} 504}
466 505
467static void 506static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 514
476 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
477 516
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
480 519
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 521}
483 522
484/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
489 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
490 c->slot = 0; 529 c->slot = 0;
491 530
492 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
493 532
494 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
498 538
499 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 540 # include "state.h"
501 #undef VAR 541 #undef VAR
502 542
… …
514 } 554 }
515 555
516 PUTBACK; 556 PUTBACK;
517 } 557 }
518 558
519 slf_frame = c->slf_frame; 559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
520} 561}
521 562
522static void 563static void
523save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
524{ 565{
566 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 567 c->slf_frame = slf_frame;
526 568
527 { 569 {
528 dSP; 570 dSP;
529 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
587 629
588 { 630 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 632
591 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
595 638
596 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 640 # include "state.h"
598 #undef VAR 641 #undef VAR
599 } 642 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
607 */ 650 */
608#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
610#else 653#else
611static void 654static void
612coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
613{ 656{
614 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 721 Safefree (PL_retstack);
679#endif 722#endif
680} 723}
681 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
682static size_t 734static size_t
683coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
684{ 736{
685 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
686 738
687 if (coro->mainstack) 739 if (coro->mainstack)
688 { 740 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
693 { 742 {
694 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
695 744 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 745 #undef SYM
699 } 746 }
700 else 747 else
701 slot = coro->slot;
702
703 if (slot)
704 { 748 {
705 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 752 }
717 } 753 }
718 754
719 return rss; 755 return rss;
720} 756}
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 858slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 859{
824 return 0; 860 return 0;
825} 861}
826 862
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
829{ 873{
830 /* 874 /*
831 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
832 */ 876 */
… …
834 878
835 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 886 PL_curpm = 0;
840 PL_curpad = 0; 887 PL_curpad = 0;
841 PL_localizing = 0; 888 PL_localizing = 0;
842 PL_dirty = 0; 889 PL_dirty = 0;
843 PL_restartop = 0; 890 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 892 PL_parser = 0;
846#endif 893#endif
894 PL_hints = 0;
847 895
848 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
849 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 );
850 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);
851 899
852 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 907
859 { 908 {
860 dSP; 909 dSP;
861 UNOP myop; 910 UNOP myop;
862 911
863 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
866 916
867 PUSHMARK (SP); 917 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 919 PUTBACK;
870 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 922 }
874 923
875 /* 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
876 * 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.
877 */ 926 */
878 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 */
879 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 */
880}
881 929
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
882static void 942static void
883coro_destruct (pTHX_ struct coro *coro) 943coro_unwind_stacks (pTHX)
884{ 944{
885 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
886 { 946 {
887 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 956 POPSTACK_TO (PL_mainstack);
897 957
898 /* unwind main stack */ 958 /* unwind main stack */
899 dounwind (-1); 959 dounwind (-1);
900 } 960 }
961}
962
963static void
964coro_destruct_perl (pTHX_ struct coro *coro)
965{
966 coro_unwind_stacks (aTHX);
901 967
902 SvREFCNT_dec (GvSV (PL_defgv)); 968 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 969 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 970 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 971 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 972 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 973 SvREFCNT_dec (GvSV (irsgv));
974 SvREFCNT_dec (GvHV (PL_hintgv));
908 975
909 SvREFCNT_dec (PL_diehook); 976 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 977 SvREFCNT_dec (PL_warnhook);
911 978
912 SvREFCNT_dec (coro->saved_deffh); 979 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 980 SvREFCNT_dec (coro->rouse_cb);
981 SvREFCNT_dec (coro->invoke_cb);
982 SvREFCNT_dec (coro->invoke_av);
914 983
915 coro_destruct_stacks (aTHX); 984 coro_destruct_stacks (aTHX);
916} 985}
917 986
918INLINE void 987INLINE void
… …
928static int 997static int
929runops_trace (pTHX) 998runops_trace (pTHX)
930{ 999{
931 COP *oldcop = 0; 1000 COP *oldcop = 0;
932 int oldcxix = -2; 1001 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1002
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1003 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1004 {
938 PERL_ASYNC_CHECK (); 1005 PERL_ASYNC_CHECK ();
939 1006
940 if (cctx->flags & CC_TRACE_ALL) 1007 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1008 {
942 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)
943 { 1010 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1011 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1012 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1013 AV *av = newAV (); /* return values */
947 SV **cb; 1014 SV **cb;
… …
984 1051
985 if (PL_curcop != &PL_compiling) 1052 if (PL_curcop != &PL_compiling)
986 { 1053 {
987 SV **cb; 1054 SV **cb;
988 1055
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1056 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1057 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1058 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1059
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1060 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1061 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1062 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1063 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1064 SV *fullname = sv_2mortal (newSV (0));
999 1065
1000 if (isGV (gv)) 1066 if (isGV (gv))
… …
1005 SAVETMPS; 1071 SAVETMPS;
1006 EXTEND (SP, 3); 1072 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1073 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1074 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1075 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1077 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1080 SPAGAIN;
1015 FREETMPS; 1081 FREETMPS;
… …
1018 } 1084 }
1019 1085
1020 oldcxix = cxstack_ix; 1086 oldcxix = cxstack_ix;
1021 } 1087 }
1022 1088
1023 if (cctx->flags & CC_TRACE_LINE) 1089 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1090 {
1025 dSP; 1091 dSP;
1026 1092
1027 PL_runops = RUNOPS_DEFAULT; 1093 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1094 ENTER;
… …
1047 1113
1048 TAINT_NOT; 1114 TAINT_NOT;
1049 return 0; 1115 return 0;
1050} 1116}
1051 1117
1118static struct CoroSLF cctx_ssl_frame;
1119
1052static void 1120static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1121slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1122{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1123 ta->prev = 0;
1057} 1124}
1058 1125
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1126static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1127slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1128{
1062/* 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 */
1063static void NOINLINE 1135static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1136cctx_prepare (pTHX)
1065{ 1137{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1138 PL_top_env = &PL_start_env;
1070 1139
1071 if (cctx->flags & CC_TRACE) 1140 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1141 PL_runops = runops_trace;
1073 1142
1074 Zero (&myop, 1, UNOP); 1143 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1144 * that can lead to creation of a new cctx */
1076 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));
1077 1147
1078 PUSHMARK (SP); 1148 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1149 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1150
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1151 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1152 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1153}
1087 1154
1088/* 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 */
1089INLINE void 1156INLINE void
1090transfer_tail (pTHX) 1157transfer_tail (pTHX)
1091{ 1158{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1159 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1160}
1107 1161
1108/* 1162/*
1109 * this is a _very_ stripped down perl interpreter ;) 1163 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1164 */
… …
1122 /* normally we would need to skip the entersub here */ 1176 /* normally we would need to skip the entersub here */
1123 /* 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 */
1124 /* PL_nop = PL_nop->op_next */ 1178 /* PL_nop = PL_nop->op_next */
1125 1179
1126 /* inject a fake subroutine call to cctx_init */ 1180 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1181 cctx_prepare (aTHX);
1128 1182
1129 /* cctx_run is the alternative tail of transfer() */ 1183 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1184 transfer_tail (aTHX);
1132 1185
1133 /* 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 */
1134 PL_restartop = PL_op; 1187 PL_restartop = PL_op;
1135 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 */
1136 1193
1137 /* 1194 /*
1138 * 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
1139 * 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)
1140 * 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
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1198 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * 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.
1143 */ 1202 */
1144 PL_top_env = main_top_env; 1203 PL_top_env = main_top_env;
1145 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 */
1146 } 1205 }
1147} 1206}
… …
1224cctx_destroy (coro_cctx *cctx) 1283cctx_destroy (coro_cctx *cctx)
1225{ 1284{
1226 if (!cctx) 1285 if (!cctx)
1227 return; 1286 return;
1228 1287
1288 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1289
1229 --cctx_count; 1290 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1291 coro_destroy (&cctx->cctx);
1231 1292
1232 /* coro_transfer creates new, empty cctx's */ 1293 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1294 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1352/** coroutine switching *****************************************************/
1292 1353
1293static void 1354static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1355transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1356{
1357 /* TODO: throwing up here is considered harmful */
1358
1296 if (expect_true (prev != next)) 1359 if (expect_true (prev != next))
1297 { 1360 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1361 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1362 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1300 1363
1301 if (expect_false (next->flags & CF_RUNNING)) 1364 if (expect_false (next->flags & CF_RUNNING))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1365 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303 1366
1304 if (expect_false (next->flags & CF_DESTROYED)) 1367 if (expect_false (next->flags & CF_DESTROYED))
… …
1310#endif 1373#endif
1311 } 1374 }
1312} 1375}
1313 1376
1314/* always use the TRANSFER macro */ 1377/* always use the TRANSFER macro */
1315static void NOINLINE 1378static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1379transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1380{
1318 dSTACKLEVEL; 1381 dSTACKLEVEL;
1319 1382
1320 /* sometimes transfer is only called to set idle_sp */ 1383 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1384 if (expect_false (!prev))
1322 { 1385 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1386 cctx_current->idle_sp = STACKLEVEL;
1324 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 */
1325 } 1388 }
1326 else if (expect_true (prev != next)) 1389 else if (expect_true (prev != next))
1327 { 1390 {
1328 coro_cctx *prev__cctx; 1391 coro_cctx *cctx_prev;
1329 1392
1330 if (expect_false (prev->flags & CF_NEW)) 1393 if (expect_false (prev->flags & CF_NEW))
1331 { 1394 {
1332 /* create a new empty/source context */ 1395 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1396 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1397 prev->flags |= CF_RUNNING;
1336 } 1398 }
1337 1399
1338 prev->flags &= ~CF_RUNNING; 1400 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1411 coro_setup (aTHX_ next);
1350 } 1412 }
1351 else 1413 else
1352 load_perl (aTHX_ next); 1414 load_perl (aTHX_ next);
1353 1415
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1416 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1417 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1418 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1419 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1420 && !force_cctx
1361 )) 1421 ))
1362 { 1422 {
1363 /* 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 */
1364 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));
1365 1425
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1426 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1427 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1428 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1429 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1430 next->cctx = cctx_get (aTHX);
1373 1431
1374 cctx_put (prev__cctx); 1432 cctx_put (cctx_current);
1375 } 1433 }
1434 else
1435 prev->cctx = cctx_current;
1376 1436
1377 ++next->usecount; 1437 ++next->usecount;
1378 1438
1379 if (expect_true (!next->cctx)) 1439 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1440 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1441
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1442 next->cctx = 0;
1383 transfer_next = next;
1384 1443
1385 if (expect_false (prev__cctx != next->cctx)) 1444 if (expect_false (cctx_prev != cctx_current))
1386 { 1445 {
1387 prev__cctx->top_env = PL_top_env; 1446 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1447 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1448 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1449 }
1391 1450
1392 transfer_tail (aTHX); 1451 transfer_tail (aTHX);
1393 } 1452 }
1394} 1453}
… …
1416 --coro_nready; 1475 --coro_nready;
1417 } 1476 }
1418 else 1477 else
1419 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 */
1420 1479
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1480 if (coro->mainstack
1481 && coro->mainstack != main_mainstack
1482 && coro->slot
1483 && !PL_dirty)
1422 { 1484 {
1423 struct coro temp; 1485 struct coro temp;
1424 1486
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1487 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1426 1488
1427 save_perl (aTHX_ &temp); 1489 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro); 1490 load_perl (aTHX_ coro);
1429 1491
1430 coro_destruct (aTHX_ coro); 1492 coro_destruct_perl (aTHX_ coro);
1431 1493
1432 load_perl (aTHX_ &temp); 1494 load_perl (aTHX_ &temp);
1433 1495
1434 coro->slot = 0; 1496 coro->slot = 0;
1435 } 1497 }
1436 1498
1437 cctx_destroy (coro->cctx); 1499 cctx_destroy (coro->cctx);
1500 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1501 SvREFCNT_dec (coro->args);
1502 SvREFCNT_dec (CORO_THROW);
1439 1503
1440 if (coro->next) coro->next->prev = coro->prev; 1504 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1505 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1506 if (coro == coro_first) coro_first = coro->next;
1443 1507
… …
1497 1561
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1562 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1563 TRANSFER (ta, 1);
1500} 1564}
1501 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
1502/** Coro ********************************************************************/ 1589/** Coro ********************************************************************/
1503 1590
1504INLINE void 1591INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1592coro_enq (pTHX_ struct coro *coro)
1506{ 1593{
… …
1524{ 1611{
1525 struct coro *coro; 1612 struct coro *coro;
1526 SV *sv_hook; 1613 SV *sv_hook;
1527 void (*xs_hook)(void); 1614 void (*xs_hook)(void);
1528 1615
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1616 coro = SvSTATE (coro_sv);
1533 1617
1534 if (coro->flags & CF_READY) 1618 if (coro->flags & CF_READY)
1535 return 0; 1619 return 0;
1536 1620
… …
1549 ENTER; 1633 ENTER;
1550 SAVETMPS; 1634 SAVETMPS;
1551 1635
1552 PUSHMARK (SP); 1636 PUSHMARK (SP);
1553 PUTBACK; 1637 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1638 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1639
1557 FREETMPS; 1640 FREETMPS;
1558 LEAVE; 1641 LEAVE;
1559 } 1642 }
1560 1643
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1651api_is_ready (pTHX_ SV *coro_sv)
1569{ 1652{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1653 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1654}
1572 1655
1656/* expects to own a reference to next->hv */
1573INLINE void 1657INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1658prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1659{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1660 SV *prev_sv = SvRV (coro_current);
1661
1616 ta->prev = SvSTATE_hv (prev_sv); 1662 ta->prev = SvSTATE_hv (prev_sv);
1663 ta->next = next;
1664
1617 TRANSFER_CHECK (*ta); 1665 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1666
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1667 SvRV_set (coro_current, (SV *)next->hv);
1621 1668
1622 free_coro_mortal (aTHX); 1669 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1670 coro_mortal = prev_sv;
1624} 1671}
1625 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 }
1722}
1723
1626INLINE void 1724INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1725prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1726{
1629 api_ready (aTHX_ coro_current); 1727 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1728 prepare_schedule (aTHX_ ta);
… …
1649{ 1747{
1650 struct coro_transfer_args ta; 1748 struct coro_transfer_args ta;
1651 1749
1652 prepare_schedule (aTHX_ &ta); 1750 prepare_schedule (aTHX_ &ta);
1653 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);
1654} 1762}
1655 1763
1656static int 1764static int
1657api_cede (pTHX) 1765api_cede (pTHX)
1658{ 1766{
… …
1687static void 1795static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1796api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1797{
1690 struct coro *coro = SvSTATE (coro_sv); 1798 struct coro *coro = SvSTATE (coro_sv);
1691 1799
1800 if (coro->flags & CF_RUNNING)
1801 croak ("cannot enable tracing on a running coroutine, caught");
1802
1692 if (flags & CC_TRACE) 1803 if (flags & CC_TRACE)
1693 { 1804 {
1694 if (!coro->cctx) 1805 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1806 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1807 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1808 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1809
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1810 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1811 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1812 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1813 {
… …
1705 if (coro->flags & CF_RUNNING) 1816 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1817 PL_runops = RUNOPS_DEFAULT;
1707 else 1818 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1819 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1820 }
1821}
1822
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
1883static int
1884slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1885{
1886 HV *hv = (HV *)SvRV (coro_current);
1887 struct coro *coro = (struct coro *)frame->data;
1888
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 }
2012
2013 return 0;
2014}
2015
2016static void
2017slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2018{
2019 SV *cb;
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;
1710} 2306}
1711 2307
1712/*****************************************************************************/ 2308/*****************************************************************************/
1713/* PerlIO::cede */ 2309/* PerlIO::cede */
1714 2310
… …
1783 PerlIOBuf_get_cnt, 2379 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2380 PerlIOBuf_set_ptrcnt,
1785}; 2381};
1786 2382
1787/*****************************************************************************/ 2383/*****************************************************************************/
2384/* Coro::Semaphore & Coro::Signal */
1788 2385
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2386static SV *
1800pp_restore (pTHX) 2387coro_waitarray_new (pTHX_ int count)
1801{ 2388{
1802 dSP; 2389 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2390 AV *av = newAV ();
2391 SV **ary;
1803 2392
1804 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);
1805 2406
1806 EXTEND (SP, 3); 2407 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2408}
1814 2409
1815static void 2410/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820 2411
1821static void 2412static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust) 2413coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2414{
1994 SV *count_sv = AvARRAY (av)[0]; 2415 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2416 IV count = SvIVX (count_sv);
1996 2417
1997 count += adjust; 2418 count += adjust;
1998 SvIVX (count_sv) = count; 2419 SvIVX (count_sv) = count;
1999 2420
2000 /* now wake up as many waiters as possible */ 2421 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2422 while (count > 0 && AvFILLp (av) > 0)
2002 { 2423 {
2003 SV *cb; 2424 SV *cb;
2004 2425
2005 /* swap first two elements so we can shift a waiter */ 2426 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2427 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2428 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2429 cb = av_shift (av);
2009 2430
2010 if (SvOBJECT (cb)) 2431 if (SvOBJECT (cb))
2432 {
2011 api_ready (aTHX_ cb); 2433 api_ready (aTHX_ cb);
2012 else 2434 --count;
2013 croak ("callbacks not yet supported"); 2435 }
2436 else if (SvTYPE (cb) == SVt_PVCV)
2437 {
2438 dSP;
2439 PUSHMARK (SP);
2440 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2441 PUTBACK;
2442 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2443 }
2014 2444
2015 SvREFCNT_dec (cb); 2445 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2446 }
2019} 2447}
2020 2448
2021static void 2449static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2450coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{ 2451{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2452 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2453 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2454}
2027 2455
2028static int 2456static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2457slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2458{
2031 AV *av = (AV *)frame->data; 2459 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2460 SV *count_sv = AvARRAY (av)[0];
2033 2461
2462 /* if we are about to throw, don't actually acquire the lock, just throw */
2463 if (CORO_THROW)
2464 return 0;
2034 if (SvIVX (count_sv) > 0) 2465 else if (SvIVX (count_sv) > 0)
2035 { 2466 {
2036 SvSTATE_current->on_destroy = 0; 2467 SvSTATE_current->on_destroy = 0;
2468
2469 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2470 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2471 else
2472 coro_semaphore_adjust (aTHX_ av, 0);
2473
2038 return 0; 2474 return 0;
2039 } 2475 }
2040 else 2476 else
2041 { 2477 {
2042 int i; 2478 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2487 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2488 return 1;
2053 } 2489 }
2054} 2490}
2055 2491
2056static void 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
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2505slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2506{
2059 AV *av = (AV *)SvRV (arg [0]); 2507 AV *av = (AV *)SvRV (arg [0]);
2060 2508
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2509 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2510 {
… …
2072 2520
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2521 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2522 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2523 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 } 2524 }
2525}
2077 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);
2078 frame->check = slf_check_semaphore_down; 2531 frame->check = slf_check_semaphore_down;
2532}
2079 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 }
2080} 2613}
2081 2614
2082/*****************************************************************************/ 2615/*****************************************************************************/
2616/* Coro::AIO */
2083 2617
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2618#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 2619
2086/* create a closure from XS, returns a code reference */ 2620/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 2621struct io_state
2088/* the callback must use dXSARGS/XSRETURN */
2089static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091{ 2622{
2092 CV *cv = (CV *)NEWSV (0, 0); 2623 int errorno;
2624 I32 laststype; /* U16 in 5.10.0 */
2625 int laststatval;
2626 Stat_t statcache;
2627};
2093 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
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 2639 sv_upgrade (data_sv, SVt_PV);
2640 SvCUR_set (data_sv, sizeof (struct io_state));
2641 SvPOK_only (data_sv);
2095 2642
2096 CvANON_on (cv); 2643 {
2097 CvISXSUB_on (cv); 2644 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2098 CvXSUB (cv) = xsub;
2099 GENSUB_ARG = arg;
2100 2645
2101 return newRV_noinc ((SV *)cv); 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 */
2696 {
2697 dSP;
2698 int i;
2699
2700 EXTEND (SP, AvFILLp (state) + 1);
2701 for (i = 0; i <= AvFILLp (state); ++i)
2702 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2703
2704 PUTBACK;
2705 }
2706
2707 return 0;
2708}
2709
2710static void
2711slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2712{
2713 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2714 SV *coro_hv = SvRV (coro_current);
2715 struct coro *coro = SvSTATE_hv (coro_hv);
2716
2717 /* put our coroutine id on the state arg */
2718 av_push (state, SvREFCNT_inc_NN (coro_hv));
2719
2720 /* first see whether we have a non-zero priority and set it as AIO prio */
2721 if (coro->prio)
2722 {
2723 dSP;
2724
2725 static SV *prio_cv;
2726 static SV *prio_sv;
2727
2728 if (expect_false (!prio_cv))
2729 {
2730 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2731 prio_sv = newSViv (0);
2732 }
2733
2734 PUSHMARK (SP);
2735 sv_setiv (prio_sv, coro->prio);
2736 XPUSHs (prio_sv);
2737
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;
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;
2102} 2778}
2103 2779
2104/*****************************************************************************/ 2780/*****************************************************************************/
2781
2782#if CORO_CLONE
2783# include "clone.c"
2784#endif
2105 2785
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2786MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 2787
2108PROTOTYPES: DISABLE 2788PROTOTYPES: DISABLE
2109 2789
… …
2114 coro_thx = PERL_GET_CONTEXT; 2794 coro_thx = PERL_GET_CONTEXT;
2115# endif 2795# endif
2116#endif 2796#endif
2117 BOOT_PAGESIZE; 2797 BOOT_PAGESIZE;
2118 2798
2799 cctx_current = cctx_new_empty ();
2800
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2801 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2802 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 2803
2122 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;
2123 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2805 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2142 2824
2143 { 2825 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2826 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 2827
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2828 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 2829 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 2830
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2831 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 2832 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 2833 }
2154 2834
2155 coroapi.ver = CORO_API_VERSION; 2835 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 2836 coroapi.rev = CORO_API_REVISION;
2157 2837
… …
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2856 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2177} 2857}
2178 2858
2179SV * 2859SV *
2180new (char *klass, ...) 2860new (char *klass, ...)
2861 ALIAS:
2862 Coro::new = 1
2181 CODE: 2863 CODE:
2182{ 2864{
2183 struct coro *coro; 2865 struct coro *coro;
2184 MAGIC *mg; 2866 MAGIC *mg;
2185 HV *hv; 2867 HV *hv;
2868 CV *cb;
2186 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 }
2187 2884
2188 Newz (0, coro, 1, struct coro); 2885 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV (); 2886 coro->args = newAV ();
2190 coro->flags = CF_NEW; 2887 coro->flags = CF_NEW;
2191 2888
… …
2196 coro->hv = hv = newHV (); 2893 coro->hv = hv = newHV ();
2197 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);
2198 mg->mg_flags |= MGf_DUP; 2895 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2896 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200 2897
2898 if (items > 1)
2899 {
2201 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
2202 for (i = 1; i < items; i++) 2910 for (i = 2; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i))); 2911 av_push (coro->args, newSVsv (ST (i)));
2912 }
2204} 2913}
2205 OUTPUT: 2914 OUTPUT:
2206 RETVAL 2915 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 2916
2213void 2917void
2214transfer (...) 2918transfer (...)
2215 PROTOTYPE: $$ 2919 PROTOTYPE: $$
2216 CODE: 2920 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2921 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 2922
2219bool 2923bool
2220_destroy (SV *coro_sv) 2924_destroy (SV *coro_sv)
2221 CODE: 2925 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2926 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2226void 2930void
2227_exit (int code) 2931_exit (int code)
2228 PROTOTYPE: $ 2932 PROTOTYPE: $
2229 CODE: 2933 CODE:
2230 _exit (code); 2934 _exit (code);
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
2231 2954
2232int 2955int
2233cctx_stacksize (int new_stacksize = 0) 2956cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 2957 PROTOTYPE: ;$
2235 CODE: 2958 CODE:
… …
2340 3063
2341void 3064void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3065throw (Coro::State self, SV *throw = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3066 PROTOTYPE: $;$
2344 CODE: 3067 CODE:
3068{
3069 struct coro *current = SvSTATE_current;
3070 SV **throwp = self == current ? &CORO_THROW : &self->except;
2345 SvREFCNT_dec (self->throw); 3071 SvREFCNT_dec (*throwp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3072 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3073}
2347 3074
2348void 3075void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3076api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3077 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3078 C_ARGS: aTHX_ coro, flags
2352 3079
2353SV * 3080SV *
2354has_cctx (Coro::State coro) 3081has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3082 PROTOTYPE: $
2356 CODE: 3083 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3084 /* maybe manage the running flag differently */
3085 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3086 OUTPUT:
2359 RETVAL 3087 RETVAL
2360 3088
2361int 3089int
2362is_traced (Coro::State coro) 3090is_traced (Coro::State coro)
… …
2382 3110
2383void 3111void
2384force_cctx () 3112force_cctx ()
2385 PROTOTYPE: 3113 PROTOTYPE:
2386 CODE: 3114 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3115 cctx_current->idle_sp = 0;
2388 3116
2389void 3117void
2390swap_defsv (Coro::State self) 3118swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3119 PROTOTYPE: $
2392 ALIAS: 3120 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3128 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3129
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3130 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3131 }
2404 3132
3133
2405MODULE = Coro::State PACKAGE = Coro 3134MODULE = Coro::State PACKAGE = Coro
2406 3135
2407BOOT: 3136BOOT:
2408{ 3137{
2409 int i; 3138 int i;
2410 3139
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3140 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3141 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3142 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3143 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3144 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 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);
2417 3154
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3155 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3156
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3157 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3158 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2429 3166
2430 { 3167 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3168 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3169
2433 coroapi.schedule = api_schedule; 3170 coroapi.schedule = api_schedule;
3171 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3172 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3173 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3174 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3175 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3176 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3177 coroapi.current = coro_current;
2440 3178
2441 GCoroAPI = &coroapi; 3179 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3180 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3181 SvREADONLY_on (sv);
2444 } 3182 }
2445} 3183}
2446 3184
2447void 3185void
3186terminate (...)
3187 CODE:
3188 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3189
3190void
2448schedule (...) 3191schedule (...)
2449 CODE: 3192 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3193 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3194
3195void
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);
2451 3204
2452void 3205void
2453cede (...) 3206cede (...)
2454 CODE: 3207 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3208 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3209
2457void 3210void
2458cede_notself (...) 3211cede_notself (...)
2459 CODE: 3212 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3213 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3214
3215void
3216_cancel (Coro::State self)
3217 CODE:
3218 coro_state_destroy (aTHX_ self);
3219 coro_call_on_destroy (aTHX_ self);
2461 3220
2462void 3221void
2463_set_current (SV *current) 3222_set_current (SV *current)
2464 PROTOTYPE: $ 3223 PROTOTYPE: $
2465 CODE: 3224 CODE:
… …
2510 CODE: 3269 CODE:
2511 RETVAL = coro_nready; 3270 RETVAL = coro_nready;
2512 OUTPUT: 3271 OUTPUT:
2513 RETVAL 3272 RETVAL
2514 3273
2515# for async_pool speedup
2516void 3274void
2517_pool_1 (SV *cb) 3275_pool_handler (...)
2518 CODE: 3276 CODE:
2519{ 3277 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
2522 AV *defav = GvAV (PL_defgv);
2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524 AV *invoke_av;
2525 int i, len;
2526
2527 if (!invoke)
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 SvREFCNT_dec (coro->saved_deffh);
2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538 hv_store (hv, "desc", sizeof ("desc") - 1,
2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541 invoke_av = (AV *)SvRV (invoke);
2542 len = av_len (invoke_av);
2543
2544 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546 if (len > 0)
2547 {
2548 av_fill (defav, len - 1);
2549 for (i = 0; i < len; ++i)
2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2551 }
2552}
2553 3278
2554void 3279void
2555_pool_2 (SV *cb) 3280async_pool (SV *cv, ...)
2556 CODE:
2557{
2558 struct coro *coro = SvSTATE_current;
2559
2560 sv_setsv (cb, &PL_sv_undef);
2561
2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2563 coro->saved_deffh = 0;
2564
2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
2571 croak ("\3async_pool terminate\2\n");
2572 }
2573
2574 av_clear (GvAV (PL_defgv));
2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578 coro->prio = 0;
2579
2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581 api_trace (aTHX_ coro_current, 0);
2582
2583 av_push (av_async_pool, newSVsv (coro_current));
2584}
2585
2586
2587MODULE = Coro::State PACKAGE = Coro::AIO
2588
2589void
2590_get_state (SV *self)
2591 PROTOTYPE: $ 3281 PROTOTYPE: &@
2592 PPCODE: 3282 PPCODE:
2593{ 3283{
2594 AV *defav = GvAV (PL_defgv); 3284 HV *hv = (HV *)av_pop (av_async_pool);
2595 AV *av = newAV (); 3285 AV *av = newAV ();
3286 SV *cb = ST (0);
2596 int i; 3287 int i;
2597 SV *data_sv = newSV (sizeof (struct io_state));
2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599 SvCUR_set (data_sv, sizeof (struct io_state));
2600 SvPOK_only (data_sv);
2601 3288
2602 data->errorno = errno; 3289 av_extend (av, items - 2);
2603 data->laststype = PL_laststype; 3290 for (i = 1; i < items; ++i)
2604 data->laststatval = PL_laststatval;
2605 data->statcache = PL_statcache;
2606
2607 av_extend (av, AvFILLp (defav) + 1 + 1);
2608
2609 for (i = 0; i <= AvFILLp (defav); ++i)
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3291 av_push (av, SvREFCNT_inc_NN (ST (i)));
2611 3292
2612 av_push (av, data_sv); 3293 if ((SV *)hv == &PL_sv_undef)
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
2617}
2618
2619void
2620_set_state (SV *state)
2621 PROTOTYPE: $
2622 PPCODE:
2623{
2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
2627
2628 errno = data->errorno;
2629 PL_laststype = data->laststype;
2630 PL_laststatval = data->laststatval;
2631 PL_statcache = data->statcache;
2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 { 3294 {
2659 PUSHMARK (SP); 3295 PUSHMARK (SP);
3296 EXTEND (SP, 2);
3297 PUSHs (sv_Coro);
3298 PUSHs ((SV *)cv_pool_handler);
2660 PUTBACK; 3299 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3300 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2662 SPAGAIN; 3301 SPAGAIN;
3302
3303 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2663 } 3304 }
2664 3305
2665 --incede; 3306 {
3307 struct coro *coro = SvSTATE_hv (hv);
3308
3309 assert (!coro->invoke_cb);
3310 assert (!coro->invoke_av);
3311 coro->invoke_cb = SvREFCNT_inc (cb);
3312 coro->invoke_av = av;
3313 }
3314
3315 api_ready (aTHX_ (SV *)hv);
3316
3317 if (GIMME_V != G_VOID)
3318 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3319 else
3320 SvREFCNT_dec (hv);
2666} 3321}
3322
3323SV *
3324rouse_cb ()
3325 PROTOTYPE:
3326 CODE:
3327 RETVAL = coro_new_rouse_cb (aTHX);
3328 OUTPUT:
3329 RETVAL
3330
3331void
3332rouse_wait (...)
3333 PROTOTYPE: ;$
3334 PPCODE:
3335 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2667 3336
2668 3337
2669MODULE = Coro::State PACKAGE = PerlIO::cede 3338MODULE = Coro::State PACKAGE = PerlIO::cede
2670 3339
2671BOOT: 3340BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3341 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 3342
3343
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 3344MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 3345
2676SV * 3346SV *
2677new (SV *klass, SV *count_ = 0) 3347new (SV *klass, SV *count = 0)
2678 CODE: 3348 CODE:
2679{ 3349 RETVAL = sv_bless (
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3350 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2681 AV *av = newAV (); 3351 GvSTASH (CvGV (cv))
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3352 );
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3353 OUTPUT:
2684} 3354 RETVAL
3355
3356# helper for Coro::Channel
3357SV *
3358_alloc (int count)
3359 CODE:
3360 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 3361 OUTPUT:
2686 RETVAL 3362 RETVAL
2687 3363
2688SV * 3364SV *
2689count (SV *self) 3365count (SV *self)
… …
2698 adjust = 1 3374 adjust = 1
2699 CODE: 3375 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3376 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 3377
2702void 3378void
2703down (SV *self) 3379down (...)
2704 CODE: 3380 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3381 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3382
3383void
3384wait (...)
3385 CODE:
3386 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 3387
2707void 3388void
2708try (SV *self) 3389try (SV *self)
2709 PPCODE: 3390 PPCODE:
2710{ 3391{
… …
2722 XSRETURN_NO; 3403 XSRETURN_NO;
2723} 3404}
2724 3405
2725void 3406void
2726waiters (SV *self) 3407waiters (SV *self)
2727 CODE: 3408 PPCODE:
2728{ 3409{
2729 AV *av = (AV *)SvRV (self); 3410 AV *av = (AV *)SvRV (self);
3411 int wcount = AvFILLp (av) + 1 - 1;
2730 3412
2731 if (GIMME_V == G_SCALAR) 3413 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3414 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 3415 else
2734 { 3416 {
2735 int i; 3417 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 3418 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 3419 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 3420 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 3421 }
2740} 3422}
2741 3423
3424MODULE = Coro::State PACKAGE = Coro::Signal
3425
3426SV *
3427new (SV *klass)
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:
3444{
3445 AV *av = (AV *)SvRV (self);
3446 coro_signal_wake (aTHX_ av, AvFILLp (av));
3447}
3448
3449void
3450send (SV *self)
3451 CODE:
3452{
3453 AV *av = (AV *)SvRV (self);
3454
3455 if (AvFILLp (av))
3456 coro_signal_wake (aTHX_ av, 1);
3457 else
3458 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3459}
3460
3461IV
3462awaited (SV *self)
3463 CODE:
3464 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3465 OUTPUT:
3466 RETVAL
3467
3468
3469MODULE = Coro::State PACKAGE = Coro::AnyEvent
3470
3471BOOT:
3472 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3473
3474void
3475_schedule (...)
3476 CODE:
3477{
3478 static int incede;
3479
3480 api_cede_notself (aTHX);
3481
3482 ++incede;
3483 while (coro_nready >= incede && api_cede (aTHX))
3484 ;
3485
3486 sv_setsv (sv_activity, &PL_sv_undef);
3487 if (coro_nready >= incede)
3488 {
3489 PUSHMARK (SP);
3490 PUTBACK;
3491 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3492 }
3493
3494 --incede;
3495}
3496
3497
3498MODULE = Coro::State PACKAGE = Coro::AIO
3499
3500void
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}
3510

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