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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 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;
289
290 /* on_enter/on_leave */
291 AV *on_enter;
292 AV *on_leave;
267 293
268 /* linked list */ 294 /* linked list */
269 struct coro *next, *prev; 295 struct coro *next, *prev;
270}; 296};
271 297
272typedef struct coro *Coro__State; 298typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 299typedef struct coro *Coro__State_or_hashref;
274 300
301/* the following variables are effectively part of the perl context */
302/* and get copied between struct coro and these variables */
303/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 304static struct CoroSLF slf_frame; /* the current slf frame */
276 305
277/** Coro ********************************************************************/ 306/** Coro ********************************************************************/
278 307
279#define PRIO_MAX 3 308#define PRIO_MAX 3
… …
285 314
286/* for Coro.pm */ 315/* for Coro.pm */
287static SV *coro_current; 316static SV *coro_current;
288static SV *coro_readyhook; 317static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 318static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
319static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 320static struct coro *coro_first;
291#define coro_nready coroapi.nready 321#define coro_nready coroapi.nready
292 322
293/** lowlevel stuff **********************************************************/ 323/** lowlevel stuff **********************************************************/
294 324
… …
320 get_hv (name, create); 350 get_hv (name, create);
321#endif 351#endif
322 return get_hv (name, create); 352 return get_hv (name, create);
323} 353}
324 354
355/* may croak */
356INLINE CV *
357coro_sv_2cv (pTHX_ SV *sv)
358{
359 HV *st;
360 GV *gvp;
361 CV *cv = sv_2cv (sv, &st, &gvp, 0);
362
363 if (!cv)
364 croak ("code reference expected");
365
366 return cv;
367}
368
369/*****************************************************************************/
370/* magic glue */
371
372#define CORO_MAGIC_type_cv 26
373#define CORO_MAGIC_type_state PERL_MAGIC_ext
374
375#define CORO_MAGIC_NN(sv, type) \
376 (expect_true (SvMAGIC (sv)->mg_type == type) \
377 ? SvMAGIC (sv) \
378 : mg_find (sv, type))
379
380#define CORO_MAGIC(sv, type) \
381 (expect_true (SvMAGIC (sv)) \
382 ? CORO_MAGIC_NN (sv, type) \
383 : 0)
384
385#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
386#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
387
388INLINE struct coro *
389SvSTATE_ (pTHX_ SV *coro)
390{
391 HV *stash;
392 MAGIC *mg;
393
394 if (SvROK (coro))
395 coro = SvRV (coro);
396
397 if (expect_false (SvTYPE (coro) != SVt_PVHV))
398 croak ("Coro::State object required");
399
400 stash = SvSTASH (coro);
401 if (expect_false (stash != coro_stash && stash != coro_state_stash))
402 {
403 /* very slow, but rare, check */
404 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
405 croak ("Coro::State object required");
406 }
407
408 mg = CORO_MAGIC_state (coro);
409 return (struct coro *)mg->mg_ptr;
410}
411
412#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
413
414/* faster than SvSTATE, but expects a coroutine hv */
415#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
416#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
417
418/*****************************************************************************/
419/* padlist management and caching */
420
325static AV * 421static AV *
326coro_clone_padlist (pTHX_ CV *cv) 422coro_derive_padlist (pTHX_ CV *cv)
327{ 423{
328 AV *padlist = CvPADLIST (cv); 424 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 425 AV *newpadlist, *newpad;
330 426
331 newpadlist = newAV (); 427 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 432 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 433#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 434 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 435 --AvFILLp (padlist);
340 436
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 437 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 438 av_store (newpadlist, 1, (SV *)newpad);
343 439
344 return newpadlist; 440 return newpadlist;
345} 441}
346 442
347static void 443static void
348free_padlist (pTHX_ AV *padlist) 444free_padlist (pTHX_ AV *padlist)
349{ 445{
350 /* may be during global destruction */ 446 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 447 if (!IN_DESTRUCT)
352 { 448 {
353 I32 i = AvFILLp (padlist); 449 I32 i = AvFILLp (padlist);
354 while (i >= 0) 450
451 while (i > 0) /* special-case index 0 */
355 { 452 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 453 /* we try to be extra-careful here */
357 if (svp) 454 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 455 I32 j = AvFILLp (av);
359 SV *sv; 456
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 457 while (j >= 0)
458 SvREFCNT_dec (AvARRAY (av)[j--]);
459
460 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 461 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 462 }
366 463
464 SvREFCNT_dec (AvARRAY (padlist)[0]);
465
466 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 467 SvREFCNT_dec ((SV*)padlist);
368 } 468 }
369} 469}
370 470
371static int 471static int
… …
380 480
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 481 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 482
383 return 0; 483 return 0;
384} 484}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 485
389static MGVTBL coro_cv_vtbl = { 486static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 487 0, 0, 0, 0,
391 coro_cv_free 488 coro_cv_free
392}; 489};
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))
442 490
443/* the next two functions merely cache the padlists */ 491/* the next two functions merely cache the padlists */
444static void 492static void
445get_padlist (pTHX_ CV *cv) 493get_padlist (pTHX_ CV *cv)
446{ 494{
… …
452 else 500 else
453 { 501 {
454#if CORO_PREFER_PERL_FUNCTIONS 502#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 503 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 504 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 505 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 506 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 507 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 508 SvREFCNT_dec (cp);
461#else 509#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 510 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 511#endif
464 } 512 }
465} 513}
466 514
467static void 515static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 522 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 523
476 av = (AV *)mg->mg_obj; 524 av = (AV *)mg->mg_obj;
477 525
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 526 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 527 av_extend (av, AvFILLp (av) + 1);
480 528
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 529 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 530}
483 531
484/** load & save, init *******************************************************/ 532/** load & save, init *******************************************************/
533
534static void
535on_enterleave_call (pTHX_ SV *cb);
485 536
486static void 537static void
487load_perl (pTHX_ Coro__State c) 538load_perl (pTHX_ Coro__State c)
488{ 539{
489 perl_slots *slot = c->slot; 540 perl_slots *slot = c->slot;
490 c->slot = 0; 541 c->slot = 0;
491 542
492 PL_mainstack = c->mainstack; 543 PL_mainstack = c->mainstack;
493 544
494 GvSV (PL_defgv) = slot->defsv; 545 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 546 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 547 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 548 GvSV (irsgv) = slot->irsgv;
549 GvHV (PL_hintgv) = slot->hinthv;
498 550
499 #define VAR(name,type) PL_ ## name = slot->name; 551 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 552 # include "state.h"
501 #undef VAR 553 #undef VAR
502 554
… …
514 } 566 }
515 567
516 PUTBACK; 568 PUTBACK;
517 } 569 }
518 570
519 slf_frame = c->slf_frame; 571 slf_frame = c->slf_frame;
572 CORO_THROW = c->except;
573
574 if (expect_false (c->on_enter))
575 {
576 int i;
577
578 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
579 on_enterleave_call (AvARRAY (c->on_enter)[i]);
580 }
520} 581}
521 582
522static void 583static void
523save_perl (pTHX_ Coro__State c) 584save_perl (pTHX_ Coro__State c)
524{ 585{
586 if (expect_false (c->on_leave))
587 {
588 int i;
589
590 for (i = AvFILLp (c->on_leave); i >= 0; --i)
591 on_enterleave_call (AvARRAY (c->on_leave)[i]);
592 }
593
594 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 595 c->slf_frame = slf_frame;
526 596
527 { 597 {
528 dSP; 598 dSP;
529 I32 cxix = cxstack_ix; 599 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 656 c->mainstack = PL_mainstack;
587 657
588 { 658 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 659 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 660
591 slot->defav = GvAV (PL_defgv); 661 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 662 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 663 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 664 slot->irsgv = GvSV (irsgv);
665 slot->hinthv = GvHV (PL_hintgv);
595 666
596 #define VAR(name,type) slot->name = PL_ ## name; 667 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 668 # include "state.h"
598 #undef VAR 669 #undef VAR
599 } 670 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 675 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 676 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 677 * not usually need a lot of stackspace.
607 */ 678 */
608#if CORO_PREFER_PERL_FUNCTIONS 679#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 680# define coro_init_stacks(thx) init_stacks ()
610#else 681#else
611static void 682static void
612coro_init_stacks (pTHX) 683coro_init_stacks (pTHX)
613{ 684{
614 PL_curstackinfo = new_stackinfo(32, 8); 685 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 748#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 749 Safefree (PL_retstack);
679#endif 750#endif
680} 751}
681 752
753#define CORO_RSS \
754 rss += sizeof (SYM (curstackinfo)); \
755 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
756 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
757 rss += SYM (tmps_max) * sizeof (SV *); \
758 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
759 rss += SYM (scopestack_max) * sizeof (I32); \
760 rss += SYM (savestack_max) * sizeof (ANY);
761
682static size_t 762static size_t
683coro_rss (pTHX_ struct coro *coro) 763coro_rss (pTHX_ struct coro *coro)
684{ 764{
685 size_t rss = sizeof (*coro); 765 size_t rss = sizeof (*coro);
686 766
687 if (coro->mainstack) 767 if (coro->mainstack)
688 { 768 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 769 if (coro->flags & CF_RUNNING)
693 { 770 {
694 slot = &tmp_slot; 771 #define SYM(sym) PL_ ## sym
695 772 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 773 #undef SYM
699 } 774 }
700 else 775 else
701 slot = coro->slot;
702
703 if (slot)
704 { 776 {
705 rss += sizeof (slot->curstackinfo); 777 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 778 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 779 #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 } 780 }
717 } 781 }
718 782
719 return rss; 783 return rss;
720} 784}
… …
733#endif 797#endif
734 798
735/* 799/*
736 * This overrides the default magic get method of %SIG elements. 800 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 801 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 802 * and instead of trying to save and restore the hash elements, we just provide
739 * readback here. 803 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 804 */
744static int 805static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 806coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 807{
747 const char *s = MgPV_nolen_const (mg); 808 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 861 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 862
802 if (svp) 863 if (svp)
803 { 864 {
804 SV *old = *svp; 865 SV *old = *svp;
805 *svp = newSVsv (sv); 866 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 867 SvREFCNT_dec (old);
807 return 0; 868 return 0;
808 } 869 }
809 } 870 }
810 871
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 883slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 884{
824 return 0; 885 return 0;
825} 886}
826 887
827static void 888static int
889slf_check_repeat (pTHX_ struct CoroSLF *frame)
890{
891 return 1;
892}
893
894static UNOP coro_setup_op;
895
896static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 897coro_setup (pTHX_ struct coro *coro)
829{ 898{
830 /* 899 /*
831 * emulate part of the perl startup here. 900 * emulate part of the perl startup here.
832 */ 901 */
… …
834 903
835 PL_runops = RUNOPS_DEFAULT; 904 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 905 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 906 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 907 PL_comppad = 0;
908 PL_comppad_name = 0;
909 PL_comppad_name_fill = 0;
910 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 911 PL_curpm = 0;
840 PL_curpad = 0; 912 PL_curpad = 0;
841 PL_localizing = 0; 913 PL_localizing = 0;
842 PL_dirty = 0; 914 PL_dirty = 0;
843 PL_restartop = 0; 915 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 916#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 917 PL_parser = 0;
846#endif 918#endif
919 PL_hints = 0;
847 920
848 /* recreate the die/warn hooks */ 921 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 922 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); 923 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 924
852 GvSV (PL_defgv) = newSV (0); 925 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 926 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 927 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 928 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
929 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 930 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 931 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 932
859 { 933 {
860 dSP; 934 dSP;
861 UNOP myop; 935 UNOP myop;
862 936
863 Zero (&myop, 1, UNOP); 937 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 938 myop.op_next = Nullop;
939 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 940 myop.op_flags = OPf_WANT_VOID;
866 941
867 PUSHMARK (SP); 942 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 943 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 944 PUTBACK;
870 PL_op = (OP *)&myop; 945 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 946 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 947 }
874 948
875 /* this newly created coroutine might be run on an existing cctx which most 949 /* 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. 950 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 951 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 952 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 */ 953 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880}
881 954
955 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
956 coro_setup_op.op_next = PL_op;
957 coro_setup_op.op_type = OP_ENTERSUB;
958 coro_setup_op.op_ppaddr = pp_slf;
959 /* no flags etc. required, as an init function won't be called */
960
961 PL_op = (OP *)&coro_setup_op;
962
963 /* copy throw, in case it was set before coro_setup */
964 CORO_THROW = coro->except;
965}
966
882static void 967static void
883coro_destruct (pTHX_ struct coro *coro) 968coro_unwind_stacks (pTHX)
884{ 969{
885 if (!IN_DESTRUCT) 970 if (!IN_DESTRUCT)
886 { 971 {
887 /* restore all saved variables and stuff */ 972 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 973 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 981 POPSTACK_TO (PL_mainstack);
897 982
898 /* unwind main stack */ 983 /* unwind main stack */
899 dounwind (-1); 984 dounwind (-1);
900 } 985 }
986}
987
988static void
989coro_destruct_perl (pTHX_ struct coro *coro)
990{
991 coro_unwind_stacks (aTHX);
901 992
902 SvREFCNT_dec (GvSV (PL_defgv)); 993 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 994 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 995 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 996 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 997 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 998 SvREFCNT_dec (GvSV (irsgv));
999 SvREFCNT_dec (GvHV (PL_hintgv));
908 1000
909 SvREFCNT_dec (PL_diehook); 1001 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 1002 SvREFCNT_dec (PL_warnhook);
911 1003
912 SvREFCNT_dec (coro->saved_deffh); 1004 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1005 SvREFCNT_dec (coro->rouse_cb);
1006 SvREFCNT_dec (coro->invoke_cb);
1007 SvREFCNT_dec (coro->invoke_av);
914 1008
915 coro_destruct_stacks (aTHX); 1009 coro_destruct_stacks (aTHX);
916} 1010}
917 1011
918INLINE void 1012INLINE void
… …
928static int 1022static int
929runops_trace (pTHX) 1023runops_trace (pTHX)
930{ 1024{
931 COP *oldcop = 0; 1025 COP *oldcop = 0;
932 int oldcxix = -2; 1026 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1027
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1028 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1029 {
938 PERL_ASYNC_CHECK (); 1030 PERL_ASYNC_CHECK ();
939 1031
940 if (cctx->flags & CC_TRACE_ALL) 1032 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1033 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1034 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1035 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1036 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1037 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1038 AV *av = newAV (); /* return values */
947 SV **cb; 1039 SV **cb;
… …
984 1076
985 if (PL_curcop != &PL_compiling) 1077 if (PL_curcop != &PL_compiling)
986 { 1078 {
987 SV **cb; 1079 SV **cb;
988 1080
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1081 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1082 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1083 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1084
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1085 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1086 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1087 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1088 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1089 SV *fullname = sv_2mortal (newSV (0));
999 1090
1000 if (isGV (gv)) 1091 if (isGV (gv))
… …
1005 SAVETMPS; 1096 SAVETMPS;
1006 EXTEND (SP, 3); 1097 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1098 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1099 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1100 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1101 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1102 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1103 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); 1104 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1105 SPAGAIN;
1015 FREETMPS; 1106 FREETMPS;
… …
1018 } 1109 }
1019 1110
1020 oldcxix = cxstack_ix; 1111 oldcxix = cxstack_ix;
1021 } 1112 }
1022 1113
1023 if (cctx->flags & CC_TRACE_LINE) 1114 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1115 {
1025 dSP; 1116 dSP;
1026 1117
1027 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1119 ENTER;
… …
1047 1138
1048 TAINT_NOT; 1139 TAINT_NOT;
1049 return 0; 1140 return 0;
1050} 1141}
1051 1142
1143static struct CoroSLF cctx_ssl_frame;
1144
1052static void 1145static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1146slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1147{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1148 ta->prev = 0;
1057} 1149}
1058 1150
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1151static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1152slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1153{
1062/* also initialises PL_top_env */ 1154 *frame = cctx_ssl_frame;
1155
1156 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1157}
1158
1159/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1160static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1161cctx_prepare (pTHX)
1065{ 1162{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1163 PL_top_env = &PL_start_env;
1070 1164
1071 if (cctx->flags & CC_TRACE) 1165 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1166 PL_runops = runops_trace;
1073 1167
1074 Zero (&myop, 1, UNOP); 1168 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1169 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1170 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1171 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1172
1078 PUSHMARK (SP); 1173 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1174 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1175
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1176 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1177 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1178}
1087 1179
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1180/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1181INLINE void
1090transfer_tail (pTHX) 1182transfer_tail (pTHX)
1091{ 1183{
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); 1184 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} 1185}
1107 1186
1108/* 1187/*
1109 * this is a _very_ stripped down perl interpreter ;) 1188 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1189 */
… …
1122 /* normally we would need to skip the entersub here */ 1201 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1202 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1203 /* PL_nop = PL_nop->op_next */
1125 1204
1126 /* inject a fake subroutine call to cctx_init */ 1205 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1206 cctx_prepare (aTHX);
1128 1207
1129 /* cctx_run is the alternative tail of transfer() */ 1208 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1209 transfer_tail (aTHX);
1132 1210
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1211 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1212 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1213 perl_run (PL_curinterp);
1214 /*
1215 * Unfortunately, there is no way to get at the return values of the
1216 * coro body here, as perl_run destroys these
1217 */
1136 1218
1137 /* 1219 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1220 * 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) 1221 * 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 1222 * 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" 1223 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * coroutine as Coro has no such concept 1224 * coroutine as Coro has no such concept.
1225 * This actually isn't valid with the pthread backend, but OSes requiring
1226 * that backend are too broken to do it in a standards-compliant way.
1143 */ 1227 */
1144 PL_top_env = main_top_env; 1228 PL_top_env = main_top_env;
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1229 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1230 }
1147} 1231}
… …
1224cctx_destroy (coro_cctx *cctx) 1308cctx_destroy (coro_cctx *cctx)
1225{ 1309{
1226 if (!cctx) 1310 if (!cctx)
1227 return; 1311 return;
1228 1312
1313 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1314
1229 --cctx_count; 1315 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1316 coro_destroy (&cctx->cctx);
1231 1317
1232 /* coro_transfer creates new, empty cctx's */ 1318 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1319 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1377/** coroutine switching *****************************************************/
1292 1378
1293static void 1379static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1380transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1381{
1382 /* TODO: throwing up here is considered harmful */
1383
1296 if (expect_true (prev != next)) 1384 if (expect_true (prev != next))
1297 { 1385 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1386 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,"); 1387 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1300 1388
1301 if (expect_false (next->flags & CF_RUNNING)) 1389 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,"); 1390 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303 1391
1304 if (expect_false (next->flags & CF_DESTROYED)) 1392 if (expect_false (next->flags & CF_DESTROYED))
… …
1310#endif 1398#endif
1311 } 1399 }
1312} 1400}
1313 1401
1314/* always use the TRANSFER macro */ 1402/* always use the TRANSFER macro */
1315static void NOINLINE 1403static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1404transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1405{
1318 dSTACKLEVEL; 1406 dSTACKLEVEL;
1319 1407
1320 /* sometimes transfer is only called to set idle_sp */ 1408 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1409 if (expect_false (!prev))
1322 { 1410 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1411 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1412 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1413 }
1326 else if (expect_true (prev != next)) 1414 else if (expect_true (prev != next))
1327 { 1415 {
1328 coro_cctx *prev__cctx; 1416 coro_cctx *cctx_prev;
1329 1417
1330 if (expect_false (prev->flags & CF_NEW)) 1418 if (expect_false (prev->flags & CF_NEW))
1331 { 1419 {
1332 /* create a new empty/source context */ 1420 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1421 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1422 prev->flags |= CF_RUNNING;
1336 } 1423 }
1337 1424
1338 prev->flags &= ~CF_RUNNING; 1425 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1436 coro_setup (aTHX_ next);
1350 } 1437 }
1351 else 1438 else
1352 load_perl (aTHX_ next); 1439 load_perl (aTHX_ next);
1353 1440
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1441 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1442 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1443 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1444 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1445 && !force_cctx
1361 )) 1446 ))
1362 { 1447 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1448 /* 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)); 1449 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1450
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 */ 1451 /* 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 */ 1452 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1453 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1454 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1455 next->cctx = cctx_get (aTHX);
1373 1456
1374 cctx_put (prev__cctx); 1457 cctx_put (cctx_current);
1375 } 1458 }
1459 else
1460 prev->cctx = cctx_current;
1376 1461
1377 ++next->usecount; 1462 ++next->usecount;
1378 1463
1379 if (expect_true (!next->cctx)) 1464 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1465 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1466
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1467 next->cctx = 0;
1383 transfer_next = next;
1384 1468
1385 if (expect_false (prev__cctx != next->cctx)) 1469 if (expect_false (cctx_prev != cctx_current))
1386 { 1470 {
1387 prev__cctx->top_env = PL_top_env; 1471 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1472 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1473 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1474 }
1391 1475
1392 transfer_tail (aTHX); 1476 transfer_tail (aTHX);
1393 } 1477 }
1394} 1478}
… …
1416 --coro_nready; 1500 --coro_nready;
1417 } 1501 }
1418 else 1502 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1503 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1504
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1505 if (coro->mainstack
1506 && coro->mainstack != main_mainstack
1507 && coro->slot
1508 && !PL_dirty)
1422 { 1509 {
1423 struct coro temp; 1510 struct coro *current = SvSTATE_current;
1424 1511
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1512 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1426 1513
1427 save_perl (aTHX_ &temp); 1514 save_perl (aTHX_ current);
1428 load_perl (aTHX_ coro); 1515 load_perl (aTHX_ coro);
1429 1516
1430 coro_destruct (aTHX_ coro); 1517 coro_destruct_perl (aTHX_ coro);
1431 1518
1432 load_perl (aTHX_ &temp); 1519 load_perl (aTHX_ current);
1433 1520
1434 coro->slot = 0; 1521 coro->slot = 0;
1435 } 1522 }
1436 1523
1437 cctx_destroy (coro->cctx); 1524 cctx_destroy (coro->cctx);
1525 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1526 SvREFCNT_dec (coro->args);
1527 SvREFCNT_dec (CORO_THROW);
1439 1528
1440 if (coro->next) coro->next->prev = coro->prev; 1529 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1530 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1531 if (coro == coro_first) coro_first = coro->next;
1443 1532
… …
1497 1586
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1587 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1588 TRANSFER (ta, 1);
1500} 1589}
1501 1590
1591/*****************************************************************************/
1592/* gensub: simple closure generation utility */
1593
1594#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1595
1596/* create a closure from XS, returns a code reference */
1597/* the arg can be accessed via GENSUB_ARG from the callback */
1598/* the callback must use dXSARGS/XSRETURN */
1599static SV *
1600gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1601{
1602 CV *cv = (CV *)newSV (0);
1603
1604 sv_upgrade ((SV *)cv, SVt_PVCV);
1605
1606 CvANON_on (cv);
1607 CvISXSUB_on (cv);
1608 CvXSUB (cv) = xsub;
1609 GENSUB_ARG = arg;
1610
1611 return newRV_noinc ((SV *)cv);
1612}
1613
1502/** Coro ********************************************************************/ 1614/** Coro ********************************************************************/
1503 1615
1504INLINE void 1616INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1617coro_enq (pTHX_ struct coro *coro)
1506{ 1618{
… …
1524{ 1636{
1525 struct coro *coro; 1637 struct coro *coro;
1526 SV *sv_hook; 1638 SV *sv_hook;
1527 void (*xs_hook)(void); 1639 void (*xs_hook)(void);
1528 1640
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1641 coro = SvSTATE (coro_sv);
1533 1642
1534 if (coro->flags & CF_READY) 1643 if (coro->flags & CF_READY)
1535 return 0; 1644 return 0;
1536 1645
… …
1549 ENTER; 1658 ENTER;
1550 SAVETMPS; 1659 SAVETMPS;
1551 1660
1552 PUSHMARK (SP); 1661 PUSHMARK (SP);
1553 PUTBACK; 1662 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1663 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1664
1557 FREETMPS; 1665 FREETMPS;
1558 LEAVE; 1666 LEAVE;
1559 } 1667 }
1560 1668
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1676api_is_ready (pTHX_ SV *coro_sv)
1569{ 1677{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1678 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1679}
1572 1680
1681/* expects to own a reference to next->hv */
1573INLINE void 1682INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1683prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1684{
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); 1685 SV *prev_sv = SvRV (coro_current);
1686
1616 ta->prev = SvSTATE_hv (prev_sv); 1687 ta->prev = SvSTATE_hv (prev_sv);
1688 ta->next = next;
1689
1617 TRANSFER_CHECK (*ta); 1690 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1691
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1692 SvRV_set (coro_current, (SV *)next->hv);
1621 1693
1622 free_coro_mortal (aTHX); 1694 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1695 coro_mortal = prev_sv;
1624} 1696}
1625 1697
1698static void
1699prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1700{
1701 for (;;)
1702 {
1703 SV *next_sv = coro_deq (aTHX);
1704
1705 if (expect_true (next_sv))
1706 {
1707 struct coro *next = SvSTATE_hv (next_sv);
1708
1709 /* cannot transfer to destroyed coros, skip and look for next */
1710 if (expect_false (next->flags & CF_DESTROYED))
1711 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1712 else
1713 {
1714 next->flags &= ~CF_READY;
1715 --coro_nready;
1716
1717 prepare_schedule_to (aTHX_ ta, next);
1718 break;
1719 }
1720 }
1721 else
1722 {
1723 /* nothing to schedule: call the idle handler */
1724 if (SvROK (sv_idle)
1725 && SvOBJECT (SvRV (sv_idle)))
1726 {
1727 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1728 api_ready (aTHX_ SvRV (sv_idle));
1729 --coro_nready;
1730 }
1731 else
1732 {
1733 dSP;
1734
1735 ENTER;
1736 SAVETMPS;
1737
1738 PUSHMARK (SP);
1739 PUTBACK;
1740 call_sv (sv_idle, G_VOID | G_DISCARD);
1741
1742 FREETMPS;
1743 LEAVE;
1744 }
1745 }
1746 }
1747}
1748
1626INLINE void 1749INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1750prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1751{
1629 api_ready (aTHX_ coro_current); 1752 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1753 prepare_schedule (aTHX_ ta);
… …
1649{ 1772{
1650 struct coro_transfer_args ta; 1773 struct coro_transfer_args ta;
1651 1774
1652 prepare_schedule (aTHX_ &ta); 1775 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1776 TRANSFER (ta, 1);
1777}
1778
1779static void
1780api_schedule_to (pTHX_ SV *coro_sv)
1781{
1782 struct coro_transfer_args ta;
1783 struct coro *next = SvSTATE (coro_sv);
1784
1785 SvREFCNT_inc_NN (coro_sv);
1786 prepare_schedule_to (aTHX_ &ta, next);
1654} 1787}
1655 1788
1656static int 1789static int
1657api_cede (pTHX) 1790api_cede (pTHX)
1658{ 1791{
… …
1687static void 1820static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1821api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1822{
1690 struct coro *coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1691 1824
1825 if (coro->flags & CF_RUNNING)
1826 croak ("cannot enable tracing on a running coroutine, caught");
1827
1692 if (flags & CC_TRACE) 1828 if (flags & CC_TRACE)
1693 { 1829 {
1694 if (!coro->cctx) 1830 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1831 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1832 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1833 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1834
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1835 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1836 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1837 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1838 {
… …
1705 if (coro->flags & CF_RUNNING) 1841 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1842 PL_runops = RUNOPS_DEFAULT;
1707 else 1843 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1844 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1845 }
1846}
1847
1848static void
1849coro_call_on_destroy (pTHX_ struct coro *coro)
1850{
1851 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1852 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1853
1854 if (on_destroyp)
1855 {
1856 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1857
1858 while (AvFILLp (on_destroy) >= 0)
1859 {
1860 dSP; /* don't disturb outer sp */
1861 SV *cb = av_pop (on_destroy);
1862
1863 PUSHMARK (SP);
1864
1865 if (statusp)
1866 {
1867 int i;
1868 AV *status = (AV *)SvRV (*statusp);
1869 EXTEND (SP, AvFILLp (status) + 1);
1870
1871 for (i = 0; i <= AvFILLp (status); ++i)
1872 PUSHs (AvARRAY (status)[i]);
1873 }
1874
1875 PUTBACK;
1876 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1877 }
1878 }
1879}
1880
1881static void
1882slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883{
1884 int i;
1885 HV *hv = (HV *)SvRV (coro_current);
1886 AV *av = newAV ();
1887
1888 av_extend (av, items - 1);
1889 for (i = 0; i < items; ++i)
1890 av_push (av, SvREFCNT_inc_NN (arg [i]));
1891
1892 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1893
1894 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1895 api_ready (aTHX_ sv_manager);
1896
1897 frame->prepare = prepare_schedule;
1898 frame->check = slf_check_repeat;
1899
1900 /* as a minor optimisation, we could unwind all stacks here */
1901 /* but that puts extra pressure on pp_slf, and is not worth much */
1902 /*coro_unwind_stacks (aTHX);*/
1903}
1904
1905/*****************************************************************************/
1906/* async pool handler */
1907
1908static int
1909slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1910{
1911 HV *hv = (HV *)SvRV (coro_current);
1912 struct coro *coro = (struct coro *)frame->data;
1913
1914 if (!coro->invoke_cb)
1915 return 1; /* loop till we have invoke */
1916 else
1917 {
1918 hv_store (hv, "desc", sizeof ("desc") - 1,
1919 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1920
1921 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1922
1923 {
1924 dSP;
1925 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1926 PUTBACK;
1927 }
1928
1929 SvREFCNT_dec (GvAV (PL_defgv));
1930 GvAV (PL_defgv) = coro->invoke_av;
1931 coro->invoke_av = 0;
1932
1933 return 0;
1934 }
1935}
1936
1937static void
1938slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1939{
1940 HV *hv = (HV *)SvRV (coro_current);
1941 struct coro *coro = SvSTATE_hv ((SV *)hv);
1942
1943 if (expect_true (coro->saved_deffh))
1944 {
1945 /* subsequent iteration */
1946 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1947 coro->saved_deffh = 0;
1948
1949 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1950 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1951 {
1952 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1953 coro->invoke_av = newAV ();
1954
1955 frame->prepare = prepare_nop;
1956 }
1957 else
1958 {
1959 av_clear (GvAV (PL_defgv));
1960 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1961
1962 coro->prio = 0;
1963
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (aTHX_ coro_current, 0);
1966
1967 frame->prepare = prepare_schedule;
1968 av_push (av_async_pool, SvREFCNT_inc (hv));
1969 }
1970 }
1971 else
1972 {
1973 /* first iteration, simply fall through */
1974 frame->prepare = prepare_nop;
1975 }
1976
1977 frame->check = slf_check_pool_handler;
1978 frame->data = (void *)coro;
1979}
1980
1981/*****************************************************************************/
1982/* rouse callback */
1983
1984#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1985
1986static void
1987coro_rouse_callback (pTHX_ CV *cv)
1988{
1989 dXSARGS;
1990 SV *data = (SV *)GENSUB_ARG;
1991
1992 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1993 {
1994 /* first call, set args */
1995 AV *av = newAV ();
1996 SV *coro = SvRV (data);
1997
1998 SvRV_set (data, (SV *)av);
1999 api_ready (aTHX_ coro);
2000 SvREFCNT_dec (coro);
2001
2002 /* better take a full copy of the arguments */
2003 while (items--)
2004 av_store (av, items, newSVsv (ST (items)));
2005 }
2006
2007 XSRETURN_EMPTY;
2008}
2009
2010static int
2011slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2012{
2013 SV *data = (SV *)frame->data;
2014
2015 if (CORO_THROW)
2016 return 0;
2017
2018 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2019 return 1;
2020
2021 /* now push all results on the stack */
2022 {
2023 dSP;
2024 AV *av = (AV *)SvRV (data);
2025 int i;
2026
2027 EXTEND (SP, AvFILLp (av) + 1);
2028 for (i = 0; i <= AvFILLp (av); ++i)
2029 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2030
2031 /* we have stolen the elements, so ste length to zero and free */
2032 AvFILLp (av) = -1;
2033 av_undef (av);
2034
2035 PUTBACK;
2036 }
2037
2038 return 0;
2039}
2040
2041static void
2042slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2043{
2044 SV *cb;
2045
2046 if (items)
2047 cb = arg [0];
2048 else
2049 {
2050 struct coro *coro = SvSTATE_current;
2051
2052 if (!coro->rouse_cb)
2053 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2054
2055 cb = sv_2mortal (coro->rouse_cb);
2056 coro->rouse_cb = 0;
2057 }
2058
2059 if (!SvROK (cb)
2060 || SvTYPE (SvRV (cb)) != SVt_PVCV
2061 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2062 croak ("Coro::rouse_wait called with illegal callback argument,");
2063
2064 {
2065 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2066 SV *data = (SV *)GENSUB_ARG;
2067
2068 frame->data = (void *)data;
2069 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2070 frame->check = slf_check_rouse_wait;
2071 }
2072}
2073
2074static SV *
2075coro_new_rouse_cb (pTHX)
2076{
2077 HV *hv = (HV *)SvRV (coro_current);
2078 struct coro *coro = SvSTATE_hv (hv);
2079 SV *data = newRV_inc ((SV *)hv);
2080 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2081
2082 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2083 SvREFCNT_dec (data); /* magicext increases the refcount */
2084
2085 SvREFCNT_dec (coro->rouse_cb);
2086 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2087
2088 return cb;
2089}
2090
2091/*****************************************************************************/
2092/* schedule-like-function opcode (SLF) */
2093
2094static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2095static const CV *slf_cv;
2096static SV **slf_argv;
2097static int slf_argc, slf_arga; /* count, allocated */
2098static I32 slf_ax; /* top of stack, for restore */
2099
2100/* this restores the stack in the case we patched the entersub, to */
2101/* recreate the stack frame as perl will on following calls */
2102/* since entersub cleared the stack */
2103static OP *
2104pp_restore (pTHX)
2105{
2106 int i;
2107 SV **SP = PL_stack_base + slf_ax;
2108
2109 PUSHMARK (SP);
2110
2111 EXTEND (SP, slf_argc + 1);
2112
2113 for (i = 0; i < slf_argc; ++i)
2114 PUSHs (sv_2mortal (slf_argv [i]));
2115
2116 PUSHs ((SV *)CvGV (slf_cv));
2117
2118 RETURNOP (slf_restore.op_first);
2119}
2120
2121static void
2122slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2123{
2124 SV **arg = (SV **)slf_frame.data;
2125
2126 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2127}
2128
2129static void
2130slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 if (items != 2)
2133 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2134
2135 frame->prepare = slf_prepare_transfer;
2136 frame->check = slf_check_nop;
2137 frame->data = (void *)arg; /* let's hope it will stay valid */
2138}
2139
2140static void
2141slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_schedule;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2149{
2150 struct coro *next = (struct coro *)slf_frame.data;
2151
2152 SvREFCNT_inc_NN (next->hv);
2153 prepare_schedule_to (aTHX_ ta, next);
2154}
2155
2156static void
2157slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2158{
2159 if (!items)
2160 croak ("Coro::schedule_to expects a coroutine argument, caught");
2161
2162 frame->data = (void *)SvSTATE (arg [0]);
2163 frame->prepare = slf_prepare_schedule_to;
2164 frame->check = slf_check_nop;
2165}
2166
2167static void
2168slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 api_ready (aTHX_ SvRV (coro_current));
2171
2172 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2173}
2174
2175static void
2176slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_cede;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 frame->prepare = prepare_cede_notself;
2186 frame->check = slf_check_nop;
2187}
2188
2189/*
2190 * these not obviously related functions are all rolled into one
2191 * function to increase chances that they all will call transfer with the same
2192 * stack offset
2193 * SLF stands for "schedule-like-function".
2194 */
2195static OP *
2196pp_slf (pTHX)
2197{
2198 I32 checkmark; /* mark SP to see how many elements check has pushed */
2199
2200 /* set up the slf frame, unless it has already been set-up */
2201 /* the latter happens when a new coro has been started */
2202 /* or when a new cctx was attached to an existing coroutine */
2203 if (expect_true (!slf_frame.prepare))
2204 {
2205 /* first iteration */
2206 dSP;
2207 SV **arg = PL_stack_base + TOPMARK + 1;
2208 int items = SP - arg; /* args without function object */
2209 SV *gv = *sp;
2210
2211 /* do a quick consistency check on the "function" object, and if it isn't */
2212 /* for us, divert to the real entersub */
2213 if (SvTYPE (gv) != SVt_PVGV
2214 || !GvCV (gv)
2215 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2216 return PL_ppaddr[OP_ENTERSUB](aTHX);
2217
2218 if (!(PL_op->op_flags & OPf_STACKED))
2219 {
2220 /* ampersand-form of call, use @_ instead of stack */
2221 AV *av = GvAV (PL_defgv);
2222 arg = AvARRAY (av);
2223 items = AvFILLp (av) + 1;
2224 }
2225
2226 /* now call the init function, which needs to set up slf_frame */
2227 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2228 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2229
2230 /* pop args */
2231 SP = PL_stack_base + POPMARK;
2232
2233 PUTBACK;
2234 }
2235
2236 /* now that we have a slf_frame, interpret it! */
2237 /* we use a callback system not to make the code needlessly */
2238 /* complicated, but so we can run multiple perl coros from one cctx */
2239
2240 do
2241 {
2242 struct coro_transfer_args ta;
2243
2244 slf_frame.prepare (aTHX_ &ta);
2245 TRANSFER (ta, 0);
2246
2247 checkmark = PL_stack_sp - PL_stack_base;
2248 }
2249 while (slf_frame.check (aTHX_ &slf_frame));
2250
2251 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2252
2253 /* exception handling */
2254 if (expect_false (CORO_THROW))
2255 {
2256 SV *exception = sv_2mortal (CORO_THROW);
2257
2258 CORO_THROW = 0;
2259 sv_setsv (ERRSV, exception);
2260 croak (0);
2261 }
2262
2263 /* return value handling - mostly like entersub */
2264 /* make sure we put something on the stack in scalar context */
2265 if (GIMME_V == G_SCALAR)
2266 {
2267 dSP;
2268 SV **bot = PL_stack_base + checkmark;
2269
2270 if (sp == bot) /* too few, push undef */
2271 bot [1] = &PL_sv_undef;
2272 else if (sp != bot + 1) /* too many, take last one */
2273 bot [1] = *sp;
2274
2275 SP = bot + 1;
2276
2277 PUTBACK;
2278 }
2279
2280 return NORMAL;
2281}
2282
2283static void
2284api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2285{
2286 int i;
2287 SV **arg = PL_stack_base + ax;
2288 int items = PL_stack_sp - arg + 1;
2289
2290 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2291
2292 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2293 && PL_op->op_ppaddr != pp_slf)
2294 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2295
2296 CvFLAGS (cv) |= CVf_SLF;
2297 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2298 slf_cv = cv;
2299
2300 /* we patch the op, and then re-run the whole call */
2301 /* we have to put the same argument on the stack for this to work */
2302 /* and this will be done by pp_restore */
2303 slf_restore.op_next = (OP *)&slf_restore;
2304 slf_restore.op_type = OP_CUSTOM;
2305 slf_restore.op_ppaddr = pp_restore;
2306 slf_restore.op_first = PL_op;
2307
2308 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2309
2310 if (PL_op->op_flags & OPf_STACKED)
2311 {
2312 if (items > slf_arga)
2313 {
2314 slf_arga = items;
2315 free (slf_argv);
2316 slf_argv = malloc (slf_arga * sizeof (SV *));
2317 }
2318
2319 slf_argc = items;
2320
2321 for (i = 0; i < items; ++i)
2322 slf_argv [i] = SvREFCNT_inc (arg [i]);
2323 }
2324 else
2325 slf_argc = 0;
2326
2327 PL_op->op_ppaddr = pp_slf;
2328 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2329
2330 PL_op = (OP *)&slf_restore;
2331}
2332
2333/*****************************************************************************/
2334/* dynamic wind */
2335
2336static void
2337on_enterleave_call (pTHX_ SV *cb)
2338{
2339 dSP;
2340
2341 PUSHSTACK;
2342
2343 PUSHMARK (SP);
2344 PUTBACK;
2345 call_sv (cb, G_VOID | G_DISCARD);
2346 SPAGAIN;
2347
2348 POPSTACK;
2349}
2350
2351static SV *
2352coro_avp_pop_and_free (AV **avp)
2353{
2354 AV *av = *avp;
2355 SV *res = av_pop (av);
2356
2357 if (AvFILLp (av) < 0)
2358 {
2359 *avp = 0;
2360 SvREFCNT_dec (av);
2361 }
2362
2363 return res;
2364}
2365
2366static void
2367coro_pop_on_enter (pTHX_ void *coro)
2368{
2369 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_enter);
2370 SvREFCNT_dec (cb);
2371}
2372
2373static void
2374coro_pop_on_leave (pTHX_ void *coro)
2375{
2376 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_leave);
2377 on_enterleave_call (sv_2mortal (cb));
1710} 2378}
1711 2379
1712/*****************************************************************************/ 2380/*****************************************************************************/
1713/* PerlIO::cede */ 2381/* PerlIO::cede */
1714 2382
… …
1783 PerlIOBuf_get_cnt, 2451 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2452 PerlIOBuf_set_ptrcnt,
1785}; 2453};
1786 2454
1787/*****************************************************************************/ 2455/*****************************************************************************/
2456/* Coro::Semaphore & Coro::Signal */
1788 2457
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 * 2458static SV *
1800pp_restore (pTHX) 2459coro_waitarray_new (pTHX_ int count)
1801{ 2460{
1802 dSP; 2461 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2462 AV *av = newAV ();
2463 SV **ary;
1803 2464
1804 PUSHMARK (SP); 2465 /* unfortunately, building manually saves memory */
2466 Newx (ary, 2, SV *);
2467 AvALLOC (av) = ary;
2468#if PERL_VERSION_ATLEAST (5,10,0)
2469 AvARRAY (av) = ary;
2470#else
2471 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2472 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2473 SvPVX ((SV *)av) = (char *)ary;
2474#endif
2475 AvMAX (av) = 1;
2476 AvFILLp (av) = 0;
2477 ary [0] = newSViv (count);
1805 2478
1806 EXTEND (SP, 3); 2479 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} 2480}
1814 2481
1815static void 2482/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990 2483
1991static void 2484static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2485coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2486{
1994 SV *count_sv = AvARRAY (av)[0]; 2487 SV *count_sv = AvARRAY (av)[0];
… …
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2499 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2500 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2501 cb = av_shift (av);
2009 2502
2010 if (SvOBJECT (cb)) 2503 if (SvOBJECT (cb))
2504 {
2011 api_ready (aTHX_ cb); 2505 api_ready (aTHX_ cb);
2012 else 2506 --count;
2013 croak ("callbacks not yet supported"); 2507 }
2508 else if (SvTYPE (cb) == SVt_PVCV)
2509 {
2510 dSP;
2511 PUSHMARK (SP);
2512 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2513 PUTBACK;
2514 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2515 }
2014 2516
2015 SvREFCNT_dec (cb); 2517 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2518 }
2019} 2519}
2020 2520
2021static void 2521static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2522coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2524 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2525 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2526}
2027 2527
2028static int 2528static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2529slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2530{
2031 AV *av = (AV *)frame->data; 2531 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2532 SV *count_sv = AvARRAY (av)[0];
2033 2533
2534 /* if we are about to throw, don't actually acquire the lock, just throw */
2535 if (CORO_THROW)
2536 return 0;
2034 if (SvIVX (count_sv) > 0) 2537 else if (SvIVX (count_sv) > 0)
2035 { 2538 {
2036 SvSTATE_current->on_destroy = 0; 2539 SvSTATE_current->on_destroy = 0;
2540
2541 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2542 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2543 else
2544 coro_semaphore_adjust (aTHX_ av, 0);
2545
2038 return 0; 2546 return 0;
2039 } 2547 }
2040 else 2548 else
2041 { 2549 {
2042 int i; 2550 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2559 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2560 return 1;
2053 } 2561 }
2054} 2562}
2055 2563
2056static void 2564static int
2565slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2566{
2567 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2568}
2569
2570static int
2571slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2572{
2573 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2574}
2575
2576static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2577slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2578{
2059 AV *av = (AV *)SvRV (arg [0]); 2579 AV *av = (AV *)SvRV (arg [0]);
2060 2580
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2581 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2582 {
2063 frame->data = (void *)av; 2583 frame->data = (void *)av;
2064 frame->prepare = prepare_nop; 2584 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 } 2585 }
2067 else 2586 else
2068 { 2587 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2588 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070 2589
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2590 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule; 2591 frame->prepare = prepare_schedule;
2073 2592
2074 /* to avoid race conditions when a woken-up coro gets terminated */ 2593 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2594 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2595 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 } 2596 }
2597}
2079 2598
2599static void
2600slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2601{
2602 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2080 frame->check = slf_check_semaphore_down; 2603 frame->check = slf_check_semaphore_down;
2604}
2081 2605
2606static void
2607slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2608{
2609 if (items >= 2)
2610 {
2611 /* callback form */
2612 AV *av = (AV *)SvRV (arg [0]);
2613 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2614
2615 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2616
2617 if (SvIVX (AvARRAY (av)[0]) > 0)
2618 coro_semaphore_adjust (aTHX_ av, 0);
2619
2620 frame->prepare = prepare_nop;
2621 frame->check = slf_check_nop;
2622 }
2623 else
2624 {
2625 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2626 frame->check = slf_check_semaphore_wait;
2627 }
2628}
2629
2630/* signal */
2631
2632static void
2633coro_signal_wake (pTHX_ AV *av, int count)
2634{
2635 SvIVX (AvARRAY (av)[0]) = 0;
2636
2637 /* now signal count waiters */
2638 while (count > 0 && AvFILLp (av) > 0)
2639 {
2640 SV *cb;
2641
2642 /* swap first two elements so we can shift a waiter */
2643 cb = AvARRAY (av)[0];
2644 AvARRAY (av)[0] = AvARRAY (av)[1];
2645 AvARRAY (av)[1] = cb;
2646
2647 cb = av_shift (av);
2648
2649 api_ready (aTHX_ cb);
2650 sv_setiv (cb, 0); /* signal waiter */
2651 SvREFCNT_dec (cb);
2652
2653 --count;
2654 }
2655}
2656
2657static int
2658slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2659{
2660 /* if we are about to throw, also stop waiting */
2661 return SvROK ((SV *)frame->data) && !CORO_THROW;
2662}
2663
2664static void
2665slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2666{
2667 AV *av = (AV *)SvRV (arg [0]);
2668
2669 if (SvIVX (AvARRAY (av)[0]))
2670 {
2671 SvIVX (AvARRAY (av)[0]) = 0;
2672 frame->prepare = prepare_nop;
2673 frame->check = slf_check_nop;
2674 }
2675 else
2676 {
2677 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2678
2679 av_push (av, waiter);
2680
2681 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2682 frame->prepare = prepare_schedule;
2683 frame->check = slf_check_signal_wait;
2684 }
2082} 2685}
2083 2686
2084/*****************************************************************************/ 2687/*****************************************************************************/
2688/* Coro::AIO */
2085 2689
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2690#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2087 2691
2088/* create a closure from XS, returns a code reference */ 2692/* helper storage struct */
2089/* the arg can be accessed via GENSUB_ARG from the callback */ 2693struct io_state
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{ 2694{
2094 CV *cv = (CV *)NEWSV (0, 0); 2695 int errorno;
2696 I32 laststype; /* U16 in 5.10.0 */
2697 int laststatval;
2698 Stat_t statcache;
2699};
2095 2700
2701static void
2702coro_aio_callback (pTHX_ CV *cv)
2703{
2704 dXSARGS;
2705 AV *state = (AV *)GENSUB_ARG;
2706 SV *coro = av_pop (state);
2707 SV *data_sv = newSV (sizeof (struct io_state));
2708
2709 av_extend (state, items - 1);
2710
2096 sv_upgrade ((SV *)cv, SVt_PVCV); 2711 sv_upgrade (data_sv, SVt_PV);
2712 SvCUR_set (data_sv, sizeof (struct io_state));
2713 SvPOK_only (data_sv);
2097 2714
2098 CvANON_on (cv); 2715 {
2099 CvISXSUB_on (cv); 2716 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102 2717
2103 return newRV_noinc ((SV *)cv); 2718 data->errorno = errno;
2719 data->laststype = PL_laststype;
2720 data->laststatval = PL_laststatval;
2721 data->statcache = PL_statcache;
2722 }
2723
2724 /* now build the result vector out of all the parameters and the data_sv */
2725 {
2726 int i;
2727
2728 for (i = 0; i < items; ++i)
2729 av_push (state, SvREFCNT_inc_NN (ST (i)));
2730 }
2731
2732 av_push (state, data_sv);
2733
2734 api_ready (aTHX_ coro);
2735 SvREFCNT_dec (coro);
2736 SvREFCNT_dec ((AV *)state);
2737}
2738
2739static int
2740slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2741{
2742 AV *state = (AV *)frame->data;
2743
2744 /* if we are about to throw, return early */
2745 /* this does not cancel the aio request, but at least */
2746 /* it quickly returns */
2747 if (CORO_THROW)
2748 return 0;
2749
2750 /* one element that is an RV? repeat! */
2751 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2752 return 1;
2753
2754 /* restore status */
2755 {
2756 SV *data_sv = av_pop (state);
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 errno = data->errorno;
2760 PL_laststype = data->laststype;
2761 PL_laststatval = data->laststatval;
2762 PL_statcache = data->statcache;
2763
2764 SvREFCNT_dec (data_sv);
2765 }
2766
2767 /* push result values */
2768 {
2769 dSP;
2770 int i;
2771
2772 EXTEND (SP, AvFILLp (state) + 1);
2773 for (i = 0; i <= AvFILLp (state); ++i)
2774 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2775
2776 PUTBACK;
2777 }
2778
2779 return 0;
2780}
2781
2782static void
2783slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2784{
2785 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2786 SV *coro_hv = SvRV (coro_current);
2787 struct coro *coro = SvSTATE_hv (coro_hv);
2788
2789 /* put our coroutine id on the state arg */
2790 av_push (state, SvREFCNT_inc_NN (coro_hv));
2791
2792 /* first see whether we have a non-zero priority and set it as AIO prio */
2793 if (coro->prio)
2794 {
2795 dSP;
2796
2797 static SV *prio_cv;
2798 static SV *prio_sv;
2799
2800 if (expect_false (!prio_cv))
2801 {
2802 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2803 prio_sv = newSViv (0);
2804 }
2805
2806 PUSHMARK (SP);
2807 sv_setiv (prio_sv, coro->prio);
2808 XPUSHs (prio_sv);
2809
2810 PUTBACK;
2811 call_sv (prio_cv, G_VOID | G_DISCARD);
2812 }
2813
2814 /* now call the original request */
2815 {
2816 dSP;
2817 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2818 int i;
2819
2820 PUSHMARK (SP);
2821
2822 /* first push all args to the stack */
2823 EXTEND (SP, items + 1);
2824
2825 for (i = 0; i < items; ++i)
2826 PUSHs (arg [i]);
2827
2828 /* now push the callback closure */
2829 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2830
2831 /* now call the AIO function - we assume our request is uncancelable */
2832 PUTBACK;
2833 call_sv ((SV *)req, G_VOID | G_DISCARD);
2834 }
2835
2836 /* now that the requets is going, we loop toll we have a result */
2837 frame->data = (void *)state;
2838 frame->prepare = prepare_schedule;
2839 frame->check = slf_check_aio_req;
2840}
2841
2842static void
2843coro_aio_req_xs (pTHX_ CV *cv)
2844{
2845 dXSARGS;
2846
2847 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2848
2849 XSRETURN_EMPTY;
2104} 2850}
2105 2851
2106/*****************************************************************************/ 2852/*****************************************************************************/
2853
2854#if CORO_CLONE
2855# include "clone.c"
2856#endif
2107 2857
2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2858MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2109 2859
2110PROTOTYPES: DISABLE 2860PROTOTYPES: DISABLE
2111 2861
… …
2116 coro_thx = PERL_GET_CONTEXT; 2866 coro_thx = PERL_GET_CONTEXT;
2117# endif 2867# endif
2118#endif 2868#endif
2119 BOOT_PAGESIZE; 2869 BOOT_PAGESIZE;
2120 2870
2871 cctx_current = cctx_new_empty ();
2872
2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2873 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2874 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2123 2875
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2876 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2877 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2144 2896
2145 { 2897 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2898 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147 2899
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2900 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf, 2901 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2150 newSVpv ("coro_slf", 0), 0);
2151 2902
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2903 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf, 2904 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2154 newSVpv ("coro schedule like function", 0), 0);
2155 } 2905 }
2156 2906
2157 coroapi.ver = CORO_API_VERSION; 2907 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION; 2908 coroapi.rev = CORO_API_REVISION;
2159 2909
… …
2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2928 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2179} 2929}
2180 2930
2181SV * 2931SV *
2182new (char *klass, ...) 2932new (char *klass, ...)
2933 ALIAS:
2934 Coro::new = 1
2183 CODE: 2935 CODE:
2184{ 2936{
2185 struct coro *coro; 2937 struct coro *coro;
2186 MAGIC *mg; 2938 MAGIC *mg;
2187 HV *hv; 2939 HV *hv;
2940 CV *cb;
2188 int i; 2941 int i;
2942
2943 if (items > 1)
2944 {
2945 cb = coro_sv_2cv (aTHX_ ST (1));
2946
2947 if (!ix)
2948 {
2949 if (CvISXSUB (cb))
2950 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2951
2952 if (!CvROOT (cb))
2953 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2954 }
2955 }
2189 2956
2190 Newz (0, coro, 1, struct coro); 2957 Newz (0, coro, 1, struct coro);
2191 coro->args = newAV (); 2958 coro->args = newAV ();
2192 coro->flags = CF_NEW; 2959 coro->flags = CF_NEW;
2193 2960
… …
2198 coro->hv = hv = newHV (); 2965 coro->hv = hv = newHV ();
2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2966 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP; 2967 mg->mg_flags |= MGf_DUP;
2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2968 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2202 2969
2970 if (items > 1)
2971 {
2203 av_extend (coro->args, items - 1); 2972 av_extend (coro->args, items - 1 + ix - 1);
2973
2974 if (ix)
2975 {
2976 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2977 cb = cv_coro_run;
2978 }
2979
2980 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2981
2204 for (i = 1; i < items; i++) 2982 for (i = 2; i < items; i++)
2205 av_push (coro->args, newSVsv (ST (i))); 2983 av_push (coro->args, newSVsv (ST (i)));
2984 }
2206} 2985}
2207 OUTPUT: 2986 OUTPUT:
2208 RETVAL 2987 RETVAL
2209
2210void
2211_set_stacklevel (...)
2212 CODE:
2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2214 2988
2215void 2989void
2216transfer (...) 2990transfer (...)
2217 PROTOTYPE: $$ 2991 PROTOTYPE: $$
2218 CODE: 2992 CODE:
2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2993 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220 2994
2221bool 2995bool
2222_destroy (SV *coro_sv) 2996_destroy (SV *coro_sv)
2223 CODE: 2997 CODE:
2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2998 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2228void 3002void
2229_exit (int code) 3003_exit (int code)
2230 PROTOTYPE: $ 3004 PROTOTYPE: $
2231 CODE: 3005 CODE:
2232 _exit (code); 3006 _exit (code);
3007
3008SV *
3009clone (Coro::State coro)
3010 CODE:
3011{
3012#if CORO_CLONE
3013 struct coro *ncoro = coro_clone (aTHX_ coro);
3014 MAGIC *mg;
3015 /* TODO: too much duplication */
3016 ncoro->hv = newHV ();
3017 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3018 mg->mg_flags |= MGf_DUP;
3019 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3020#else
3021 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3022#endif
3023}
3024 OUTPUT:
3025 RETVAL
2233 3026
2234int 3027int
2235cctx_stacksize (int new_stacksize = 0) 3028cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$ 3029 PROTOTYPE: ;$
2237 CODE: 3030 CODE:
… …
2287 eval = 1 3080 eval = 1
2288 CODE: 3081 CODE:
2289{ 3082{
2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2291 { 3084 {
2292 struct coro temp; 3085 struct coro *current = SvSTATE_current;
2293 3086
2294 if (!(coro->flags & CF_RUNNING)) 3087 if (current != coro)
2295 { 3088 {
2296 PUTBACK; 3089 PUTBACK;
2297 save_perl (aTHX_ &temp); 3090 save_perl (aTHX_ current);
2298 load_perl (aTHX_ coro); 3091 load_perl (aTHX_ coro);
3092 SPAGAIN;
2299 } 3093 }
2300 3094
2301 {
2302 dSP;
2303 ENTER;
2304 SAVETMPS;
2305 PUTBACK;
2306 PUSHSTACK; 3095 PUSHSTACK;
3096
2307 PUSHMARK (SP); 3097 PUSHMARK (SP);
3098 PUTBACK;
2308 3099
2309 if (ix) 3100 if (ix)
2310 eval_sv (coderef, 0); 3101 eval_sv (coderef, 0);
2311 else 3102 else
2312 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3103 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2313 3104
3105 SPAGAIN;
2314 POPSTACK; 3106 POPSTACK;
2315 SPAGAIN;
2316 FREETMPS;
2317 LEAVE;
2318 PUTBACK;
2319 }
2320 3107
2321 if (!(coro->flags & CF_RUNNING)) 3108 if (current != coro)
2322 { 3109 {
3110 PUTBACK;
2323 save_perl (aTHX_ coro); 3111 save_perl (aTHX_ coro);
2324 load_perl (aTHX_ &temp); 3112 load_perl (aTHX_ current);
2325 SPAGAIN; 3113 SPAGAIN;
2326 } 3114 }
2327 } 3115 }
2328} 3116}
2329 3117
… …
2342 3130
2343void 3131void
2344throw (Coro::State self, SV *throw = &PL_sv_undef) 3132throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$ 3133 PROTOTYPE: $;$
2346 CODE: 3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
2347 SvREFCNT_dec (self->throw); 3138 SvREFCNT_dec (*throwp);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
2349 3141
2350void 3142void
2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$ 3144 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags 3145 C_ARGS: aTHX_ coro, flags
2354 3146
2355SV * 3147SV *
2356has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2357 PROTOTYPE: $ 3149 PROTOTYPE: $
2358 CODE: 3150 CODE:
2359 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2360 OUTPUT: 3153 OUTPUT:
2361 RETVAL 3154 RETVAL
2362 3155
2363int 3156int
2364is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2384 3177
2385void 3178void
2386force_cctx () 3179force_cctx ()
2387 PROTOTYPE: 3180 PROTOTYPE:
2388 CODE: 3181 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2390 3183
2391void 3184void
2392swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2393 PROTOTYPE: $ 3186 PROTOTYPE: $
2394 ALIAS: 3187 ALIAS:
… …
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403 3196
2404 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 } 3198 }
2406 3199
3200
2407MODULE = Coro::State PACKAGE = Coro 3201MODULE = Coro::State PACKAGE = Coro
2408 3202
2409BOOT: 3203BOOT:
2410{ 3204{
2411 int i; 3205 int i;
2412 3206
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3207 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3208 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2416 3209 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3210 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3211 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2418 SvREADONLY_on (coro_current); 3212 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3213 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3214 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3215 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3216
3217 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3218 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3219 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3220 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2419 3221
2420 coro_stash = gv_stashpv ("Coro", TRUE); 3222 coro_stash = gv_stashpv ("Coro", TRUE);
2421 3223
2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3224 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2423 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3225 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2431 3233
2432 { 3234 {
2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3235 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2434 3236
2435 coroapi.schedule = api_schedule; 3237 coroapi.schedule = api_schedule;
3238 coroapi.schedule_to = api_schedule_to;
2436 coroapi.cede = api_cede; 3239 coroapi.cede = api_cede;
2437 coroapi.cede_notself = api_cede_notself; 3240 coroapi.cede_notself = api_cede_notself;
2438 coroapi.ready = api_ready; 3241 coroapi.ready = api_ready;
2439 coroapi.is_ready = api_is_ready; 3242 coroapi.is_ready = api_is_ready;
2440 coroapi.nready = coro_nready; 3243 coroapi.nready = coro_nready;
2441 coroapi.current = coro_current; 3244 coroapi.current = coro_current;
2442 3245
2443 GCoroAPI = &coroapi; 3246 /*GCoroAPI = &coroapi;*/
2444 sv_setiv (sv, (IV)&coroapi); 3247 sv_setiv (sv, (IV)&coroapi);
2445 SvREADONLY_on (sv); 3248 SvREADONLY_on (sv);
2446 } 3249 }
2447} 3250}
2448 3251
2449void 3252void
3253terminate (...)
3254 CODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3256
3257void
2450schedule (...) 3258schedule (...)
2451 CODE: 3259 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3260 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3261
3262void
3263schedule_to (...)
3264 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3266
3267void
3268cede_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2453 3271
2454void 3272void
2455cede (...) 3273cede (...)
2456 CODE: 3274 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3275 CORO_EXECUTE_SLF_XS (slf_init_cede);
2458 3276
2459void 3277void
2460cede_notself (...) 3278cede_notself (...)
2461 CODE: 3279 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3280 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3281
3282void
3283_cancel (Coro::State self)
3284 CODE:
3285 coro_state_destroy (aTHX_ self);
3286 coro_call_on_destroy (aTHX_ self);
2463 3287
2464void 3288void
2465_set_current (SV *current) 3289_set_current (SV *current)
2466 PROTOTYPE: $ 3290 PROTOTYPE: $
2467 CODE: 3291 CODE:
… …
2512 CODE: 3336 CODE:
2513 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2514 OUTPUT: 3338 OUTPUT:
2515 RETVAL 3339 RETVAL
2516 3340
2517# for async_pool speedup
2518void 3341void
2519_pool_1 (SV *cb) 3342_pool_handler (...)
2520 CODE: 3343 CODE:
2521{ 3344 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
2524 AV *defav = GvAV (PL_defgv);
2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2526 AV *invoke_av;
2527 int i, len;
2528
2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
2534 croak ("\3async_pool terminate\2\n");
2535 }
2536
2537 SvREFCNT_dec (coro->saved_deffh);
2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2539
2540 hv_store (hv, "desc", sizeof ("desc") - 1,
2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2542
2543 invoke_av = (AV *)SvRV (invoke);
2544 len = av_len (invoke_av);
2545
2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2547
2548 if (len > 0)
2549 {
2550 av_fill (defav, len - 1);
2551 for (i = 0; i < len; ++i)
2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2553 }
2554}
2555 3345
2556void 3346void
2557_pool_2 (SV *cb) 3347async_pool (SV *cv, ...)
2558 CODE:
2559{
2560 struct coro *coro = SvSTATE_current;
2561
2562 sv_setsv (cb, &PL_sv_undef);
2563
2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2565 coro->saved_deffh = 0;
2566
2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
2573 croak ("\3async_pool terminate\2\n");
2574 }
2575
2576 av_clear (GvAV (PL_defgv));
2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579
2580 coro->prio = 0;
2581
2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2583 api_trace (aTHX_ coro_current, 0);
2584
2585 av_push (av_async_pool, newSVsv (coro_current));
2586}
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void
2592_get_state (SV *self)
2593 PROTOTYPE: $ 3348 PROTOTYPE: &@
2594 PPCODE: 3349 PPCODE:
2595{ 3350{
2596 AV *defav = GvAV (PL_defgv); 3351 HV *hv = (HV *)av_pop (av_async_pool);
2597 AV *av = newAV (); 3352 AV *av = newAV ();
3353 SV *cb = ST (0);
2598 int i; 3354 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603 3355
2604 data->errorno = errno; 3356 av_extend (av, items - 2);
2605 data->laststype = PL_laststype; 3357 for (i = 1; i < items; ++i)
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3358 av_push (av, SvREFCNT_inc_NN (ST (i)));
2613 3359
2614 av_push (av, data_sv); 3360 if ((SV *)hv == &PL_sv_undef)
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 { 3361 {
2661 PUSHMARK (SP); 3362 PUSHMARK (SP);
3363 EXTEND (SP, 2);
3364 PUSHs (sv_Coro);
3365 PUSHs ((SV *)cv_pool_handler);
2662 PUTBACK; 3366 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3367 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2664 SPAGAIN; 3368 SPAGAIN;
3369
3370 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2665 } 3371 }
2666 3372
2667 --incede; 3373 {
3374 struct coro *coro = SvSTATE_hv (hv);
3375
3376 assert (!coro->invoke_cb);
3377 assert (!coro->invoke_av);
3378 coro->invoke_cb = SvREFCNT_inc (cb);
3379 coro->invoke_av = av;
3380 }
3381
3382 api_ready (aTHX_ (SV *)hv);
3383
3384 if (GIMME_V != G_VOID)
3385 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3386 else
3387 SvREFCNT_dec (hv);
3388}
3389
3390SV *
3391rouse_cb ()
3392 PROTOTYPE:
3393 CODE:
3394 RETVAL = coro_new_rouse_cb (aTHX);
3395 OUTPUT:
3396 RETVAL
3397
3398void
3399rouse_wait (...)
3400 PROTOTYPE: ;$
3401 PPCODE:
3402 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3403
3404void
3405on_enter (SV *block)
3406 ALIAS:
3407 on_leave = 1
3408 PROTOTYPE: &
3409 CODE:
3410{
3411 struct coro *coro = SvSTATE_current;
3412 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3413
3414 block = (SV *)coro_sv_2cv (block);
3415
3416 if (!*avp)
3417 *avp = newAV ();
3418
3419 av_push (*avp, SvREFCNT_inc (block));
3420
3421 if (!ix)
3422 on_enterleave_call (aTHX_ block);
3423
3424 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3425 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3426 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
2668} 3427}
2669 3428
2670 3429
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3430MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3431
2673BOOT: 3432BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3433 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3434
3435
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3436MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3437
2678SV * 3438SV *
2679new (SV *klass, SV *count_ = 0) 3439new (SV *klass, SV *count = 0)
2680 CODE: 3440 CODE:
2681{ 3441 RETVAL = sv_bless (
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3442 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2683 AV *av = newAV (); 3443 GvSTASH (CvGV (cv))
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3444 );
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3445 OUTPUT:
2686} 3446 RETVAL
3447
3448# helper for Coro::Channel
3449SV *
3450_alloc (int count)
3451 CODE:
3452 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3453 OUTPUT:
2688 RETVAL 3454 RETVAL
2689 3455
2690SV * 3456SV *
2691count (SV *self) 3457count (SV *self)
… …
2700 adjust = 1 3466 adjust = 1
2701 CODE: 3467 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3468 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 3469
2704void 3470void
2705down (SV *self) 3471down (...)
2706 CODE: 3472 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3473 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3474
3475void
3476wait (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2708 3479
2709void 3480void
2710try (SV *self) 3481try (SV *self)
2711 PPCODE: 3482 PPCODE:
2712{ 3483{
… …
2724 XSRETURN_NO; 3495 XSRETURN_NO;
2725} 3496}
2726 3497
2727void 3498void
2728waiters (SV *self) 3499waiters (SV *self)
2729 CODE: 3500 PPCODE:
2730{ 3501{
2731 AV *av = (AV *)SvRV (self); 3502 AV *av = (AV *)SvRV (self);
3503 int wcount = AvFILLp (av) + 1 - 1;
2732 3504
2733 if (GIMME_V == G_SCALAR) 3505 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3506 XPUSHs (sv_2mortal (newSViv (wcount)));
2735 else 3507 else
2736 { 3508 {
2737 int i; 3509 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1); 3510 EXTEND (SP, wcount);
2739 for (i = 1; i <= AvFILLp (av); ++i) 3511 for (i = 1; i <= wcount; ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i])); 3512 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2741 } 3513 }
2742} 3514}
2743 3515
3516MODULE = Coro::State PACKAGE = Coro::Signal
3517
3518SV *
3519new (SV *klass)
3520 CODE:
3521 RETVAL = sv_bless (
3522 coro_waitarray_new (aTHX_ 0),
3523 GvSTASH (CvGV (cv))
3524 );
3525 OUTPUT:
3526 RETVAL
3527
3528void
3529wait (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3532
3533void
3534broadcast (SV *self)
3535 CODE:
3536{
3537 AV *av = (AV *)SvRV (self);
3538 coro_signal_wake (aTHX_ av, AvFILLp (av));
3539}
3540
3541void
3542send (SV *self)
3543 CODE:
3544{
3545 AV *av = (AV *)SvRV (self);
3546
3547 if (AvFILLp (av))
3548 coro_signal_wake (aTHX_ av, 1);
3549 else
3550 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3551}
3552
3553IV
3554awaited (SV *self)
3555 CODE:
3556 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3557 OUTPUT:
3558 RETVAL
3559
3560
3561MODULE = Coro::State PACKAGE = Coro::AnyEvent
3562
3563BOOT:
3564 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3565
3566void
3567_schedule (...)
3568 CODE:
3569{
3570 static int incede;
3571
3572 api_cede_notself (aTHX);
3573
3574 ++incede;
3575 while (coro_nready >= incede && api_cede (aTHX))
3576 ;
3577
3578 sv_setsv (sv_activity, &PL_sv_undef);
3579 if (coro_nready >= incede)
3580 {
3581 PUSHMARK (SP);
3582 PUTBACK;
3583 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3584 }
3585
3586 --incede;
3587}
3588
3589
3590MODULE = Coro::State PACKAGE = Coro::AIO
3591
3592void
3593_register (char *target, char *proto, SV *req)
3594 CODE:
3595{
3596 CV *req_cv = coro_sv_2cv (aTHX_ req);
3597 /* newXSproto doesn't return the CV on 5.8 */
3598 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3599 sv_setpv ((SV *)slf_cv, proto);
3600 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3601}
3602

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