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Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC vs.
Revision 1.331 by root, Thu Nov 27 12:00:59 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
172 181
173static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 184static SV *rv_diehook;
176static SV *rv_warnhook; 185static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
178 187
179/* async_pool helper stuff */ 188/* async_pool helper stuff */
180static SV *sv_pool_rss; 189static SV *sv_pool_rss;
181static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
183 196
184/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
185static SV *sv_activity; 198static SV *sv_activity;
186 199
187static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 229 int valgrind_id;
217#endif 230#endif
218 unsigned char flags; 231 unsigned char flags;
219} coro_cctx; 232} coro_cctx;
220 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
221enum { 238enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
230{ 247{
231 SV *defsv; 248 SV *defsv;
232 AV *defav; 249 AV *defav;
233 SV *errsv; 250 SV *errsv;
234 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
235#define VAR(name,type) type name; 253#define VAR(name,type) type name;
236# include "state.h" 254# include "state.h"
237#undef VAR 255#undef VAR
238} perl_slots; 256} perl_slots;
239 257
… …
242/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
243struct coro { 261struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 263 coro_cctx *cctx;
246 264
247 /* process data */ 265 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 266 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 267 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
251 269
270 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 275 void (*on_destroy)(pTHX_ struct coro *coro);
257 276
258 /* statistics */ 277 /* statistics */
259 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
260 279
261 /* coro process data */ 280 /* coro process data */
262 int prio; 281 int prio;
263 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
264 284
265 /* async_pool */ 285 /* async_pool */
266 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
267 289
268 /* linked list */ 290 /* linked list */
269 struct coro *next, *prev; 291 struct coro *next, *prev;
270}; 292};
271 293
272typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
274 296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 300static struct CoroSLF slf_frame; /* the current slf frame */
276 301
277/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
278 303
279#define PRIO_MAX 3 304#define PRIO_MAX 3
… …
285 310
286/* for Coro.pm */ 311/* for Coro.pm */
287static SV *coro_current; 312static SV *coro_current;
288static SV *coro_readyhook; 313static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 316static struct coro *coro_first;
291#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
292 318
293/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
294 320
… …
320 get_hv (name, create); 346 get_hv (name, create);
321#endif 347#endif
322 return get_hv (name, create); 348 return get_hv (name, create);
323} 349}
324 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
325static AV * 360static AV *
326coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
327{ 362{
328 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
330 365
331 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
346 381
347static void 382static void
348free_padlist (pTHX_ AV *padlist) 383free_padlist (pTHX_ AV *padlist)
349{ 384{
350 /* may be during global destruction */ 385 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 386 if (!IN_DESTRUCT)
352 { 387 {
353 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
389
354 while (i >= 0) 390 while (i >= 0)
355 { 391 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 392 /* we try to be extra-careful here */
357 if (svp) 393 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 394
359 SV *sv; 395 I32 i = AvFILLp (av);
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 396
397 while (i >= 0)
398 SvREFCNT_dec (AvARRAY (av)[i--]);
399
400 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 401 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 402 }
366 403
404 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 405 SvREFCNT_dec ((SV*)padlist);
368 } 406 }
369} 407}
370 408
371static int 409static int
… …
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 419 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 420
383 return 0; 421 return 0;
384} 422}
385 423
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext 424#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext 425#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 426
389static MGVTBL coro_cv_vtbl = { 427static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 428 0, 0, 0, 0,
391 coro_cv_free 429 coro_cv_free
392}; 430};
393 431
432#define CORO_MAGIC_NN(sv, type) \
433 (expect_true (SvMAGIC (sv)->mg_type == type) \
434 ? SvMAGIC (sv) \
435 : mg_find (sv, type))
436
394#define CORO_MAGIC(sv, type) \ 437#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \ 438 (expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 439 ? CORO_MAGIC_NN (sv, type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0 440 : 0)
400 441
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 442#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) 443#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
403 444
404INLINE struct coro * 445INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro) 446SvSTATE_ (pTHX_ SV *coro)
406{ 447{
407 HV *stash; 448 HV *stash;
… …
425 return (struct coro *)mg->mg_ptr; 466 return (struct coro *)mg->mg_ptr;
426} 467}
427 468
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 469#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429 470
430/* fastert than SvSTATE, but expects a coroutine hv */ 471/* faster than SvSTATE, but expects a coroutine hv */
431INLINE struct coro * 472#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
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)) 473#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 474
443/* the next two functions merely cache the padlists */ 475/* the next two functions merely cache the padlists */
444static void 476static void
445get_padlist (pTHX_ CV *cv) 477get_padlist (pTHX_ CV *cv)
… …
452 else 484 else
453 { 485 {
454#if CORO_PREFER_PERL_FUNCTIONS 486#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 487 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 488 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 489 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 490 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 491 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 492 SvREFCNT_dec (cp);
461#else 493#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 494 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 495#endif
464 } 496 }
465} 497}
466 498
467static void 499static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 506 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 507
476 av = (AV *)mg->mg_obj; 508 av = (AV *)mg->mg_obj;
477 509
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 510 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 511 av_extend (av, AvFILLp (av) + 1);
480 512
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 513 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 514}
483 515
484/** load & save, init *******************************************************/ 516/** load & save, init *******************************************************/
… …
489 perl_slots *slot = c->slot; 521 perl_slots *slot = c->slot;
490 c->slot = 0; 522 c->slot = 0;
491 523
492 PL_mainstack = c->mainstack; 524 PL_mainstack = c->mainstack;
493 525
494 GvSV (PL_defgv) = slot->defsv; 526 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 527 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 528 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 529 GvSV (irsgv) = slot->irsgv;
530 GvHV (PL_hintgv) = slot->hinthv;
498 531
499 #define VAR(name,type) PL_ ## name = slot->name; 532 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 533 # include "state.h"
501 #undef VAR 534 #undef VAR
502 535
… …
514 } 547 }
515 548
516 PUTBACK; 549 PUTBACK;
517 } 550 }
518 551
519 slf_frame = c->slf_frame; 552 slf_frame = c->slf_frame;
553 CORO_THROW = c->except;
520} 554}
521 555
522static void 556static void
523save_perl (pTHX_ Coro__State c) 557save_perl (pTHX_ Coro__State c)
524{ 558{
559 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 560 c->slf_frame = slf_frame;
526 561
527 { 562 {
528 dSP; 563 dSP;
529 I32 cxix = cxstack_ix; 564 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 621 c->mainstack = PL_mainstack;
587 622
588 { 623 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 624 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 625
591 slot->defav = GvAV (PL_defgv); 626 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 627 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 628 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 629 slot->irsgv = GvSV (irsgv);
630 slot->hinthv = GvHV (PL_hintgv);
595 631
596 #define VAR(name,type) slot->name = PL_ ## name; 632 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 633 # include "state.h"
598 #undef VAR 634 #undef VAR
599 } 635 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 640 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 641 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 642 * not usually need a lot of stackspace.
607 */ 643 */
608#if CORO_PREFER_PERL_FUNCTIONS 644#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 645# define coro_init_stacks(thx) init_stacks ()
610#else 646#else
611static void 647static void
612coro_init_stacks (pTHX) 648coro_init_stacks (pTHX)
613{ 649{
614 PL_curstackinfo = new_stackinfo(32, 8); 650 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 714 Safefree (PL_retstack);
679#endif 715#endif
680} 716}
681 717
718#define CORO_RSS \
719 rss += sizeof (SYM (curstackinfo)); \
720 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
721 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
722 rss += SYM (tmps_max) * sizeof (SV *); \
723 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
724 rss += SYM (scopestack_max) * sizeof (I32); \
725 rss += SYM (savestack_max) * sizeof (ANY);
726
682static size_t 727static size_t
683coro_rss (pTHX_ struct coro *coro) 728coro_rss (pTHX_ struct coro *coro)
684{ 729{
685 size_t rss = sizeof (*coro); 730 size_t rss = sizeof (*coro);
686 731
687 if (coro->mainstack) 732 if (coro->mainstack)
688 { 733 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 734 if (coro->flags & CF_RUNNING)
693 { 735 {
694 slot = &tmp_slot; 736 #define SYM(sym) PL_ ## sym
695 737 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 738 #undef SYM
699 } 739 }
700 else 740 else
701 slot = coro->slot;
702
703 if (slot)
704 { 741 {
705 rss += sizeof (slot->curstackinfo); 742 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 743 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 744 #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 } 745 }
717 } 746 }
718 747
719 return rss; 748 return rss;
720} 749}
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 851slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 852{
824 return 0; 853 return 0;
825} 854}
826 855
827static void 856static int
857slf_check_repeat (pTHX_ struct CoroSLF *frame)
858{
859 return 1;
860}
861
862static UNOP coro_setup_op;
863
864static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 865coro_setup (pTHX_ struct coro *coro)
829{ 866{
830 /* 867 /*
831 * emulate part of the perl startup here. 868 * emulate part of the perl startup here.
832 */ 869 */
… …
834 871
835 PL_runops = RUNOPS_DEFAULT; 872 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 873 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 874 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 875 PL_comppad = 0;
876 PL_comppad_name = 0;
877 PL_comppad_name_fill = 0;
878 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 879 PL_curpm = 0;
840 PL_curpad = 0; 880 PL_curpad = 0;
841 PL_localizing = 0; 881 PL_localizing = 0;
842 PL_dirty = 0; 882 PL_dirty = 0;
843 PL_restartop = 0; 883 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 884#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 885 PL_parser = 0;
846#endif 886#endif
887 PL_hints = 0;
847 888
848 /* recreate the die/warn hooks */ 889 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 890 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); 891 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 892
852 GvSV (PL_defgv) = newSV (0); 893 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 894 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 895 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 896 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
897 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 898 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 899 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 900
859 { 901 {
860 dSP; 902 dSP;
861 UNOP myop; 903 UNOP myop;
862 904
863 Zero (&myop, 1, UNOP); 905 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 906 myop.op_next = Nullop;
907 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 908 myop.op_flags = OPf_WANT_VOID;
866 909
867 PUSHMARK (SP); 910 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 911 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 912 PUTBACK;
870 PL_op = (OP *)&myop; 913 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 915 }
874 916
875 /* this newly created coroutine might be run on an existing cctx which most 917 /* 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. 918 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 919 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 920 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 */ 921 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
922
923 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
924 coro_setup_op.op_next = PL_op;
925 coro_setup_op.op_type = OP_ENTERSUB;
926 coro_setup_op.op_ppaddr = pp_slf;
927 /* no flags etc. required, as an init function won't be called */
928
929 PL_op = (OP *)&coro_setup_op;
930
931 /* copy throw, in case it was set before coro_setup */
932 CORO_THROW = coro->except;
880} 933}
881 934
882static void 935static void
883coro_destruct (pTHX_ struct coro *coro) 936coro_destruct (pTHX_ struct coro *coro)
884{ 937{
… …
903 SvREFCNT_dec (GvAV (PL_defgv)); 956 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 957 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 958 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 959 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 960 SvREFCNT_dec (GvSV (irsgv));
961 SvREFCNT_dec (GvHV (PL_hintgv));
908 962
909 SvREFCNT_dec (PL_diehook); 963 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 964 SvREFCNT_dec (PL_warnhook);
911 965
912 SvREFCNT_dec (coro->saved_deffh); 966 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 967 SvREFCNT_dec (coro->rouse_cb);
968 SvREFCNT_dec (coro->invoke_cb);
969 SvREFCNT_dec (coro->invoke_av);
914 970
915 coro_destruct_stacks (aTHX); 971 coro_destruct_stacks (aTHX);
916} 972}
917 973
918INLINE void 974INLINE void
… …
928static int 984static int
929runops_trace (pTHX) 985runops_trace (pTHX)
930{ 986{
931 COP *oldcop = 0; 987 COP *oldcop = 0;
932 int oldcxix = -2; 988 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 989
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 990 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 991 {
938 PERL_ASYNC_CHECK (); 992 PERL_ASYNC_CHECK ();
939 993
940 if (cctx->flags & CC_TRACE_ALL) 994 if (cctx_current->flags & CC_TRACE_ALL)
941 { 995 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 996 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 997 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 998 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 999 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1000 AV *av = newAV (); /* return values */
947 SV **cb; 1001 SV **cb;
… …
984 1038
985 if (PL_curcop != &PL_compiling) 1039 if (PL_curcop != &PL_compiling)
986 { 1040 {
987 SV **cb; 1041 SV **cb;
988 1042
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1043 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1044 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1045 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1046
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1047 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1048 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1049 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1050 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1051 SV *fullname = sv_2mortal (newSV (0));
999 1052
1000 if (isGV (gv)) 1053 if (isGV (gv))
… …
1005 SAVETMPS; 1058 SAVETMPS;
1006 EXTEND (SP, 3); 1059 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1060 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1061 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1062 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1063 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1064 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1065 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); 1066 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1067 SPAGAIN;
1015 FREETMPS; 1068 FREETMPS;
… …
1018 } 1071 }
1019 1072
1020 oldcxix = cxstack_ix; 1073 oldcxix = cxstack_ix;
1021 } 1074 }
1022 1075
1023 if (cctx->flags & CC_TRACE_LINE) 1076 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1077 {
1025 dSP; 1078 dSP;
1026 1079
1027 PL_runops = RUNOPS_DEFAULT; 1080 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1081 ENTER;
… …
1047 1100
1048 TAINT_NOT; 1101 TAINT_NOT;
1049 return 0; 1102 return 0;
1050} 1103}
1051 1104
1105static struct CoroSLF cctx_ssl_frame;
1106
1052static void 1107static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1108slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1109{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1110 ta->prev = 0;
1057} 1111}
1058 1112
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1113static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1114slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1115{
1062/* also initialises PL_top_env */ 1116 *frame = cctx_ssl_frame;
1117
1118 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1119}
1120
1121/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1122static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1123cctx_prepare (pTHX)
1065{ 1124{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1125 PL_top_env = &PL_start_env;
1070 1126
1071 if (cctx->flags & CC_TRACE) 1127 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1128 PL_runops = runops_trace;
1073 1129
1074 Zero (&myop, 1, UNOP); 1130 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1131 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1132 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1133 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1134
1078 PUSHMARK (SP); 1135 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1136 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1137
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1138 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1139 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1140}
1087 1141
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1142/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1143INLINE void
1090transfer_tail (pTHX) 1144transfer_tail (pTHX)
1091{ 1145{
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); 1146 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} 1147}
1107 1148
1108/* 1149/*
1109 * this is a _very_ stripped down perl interpreter ;) 1150 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1151 */
… …
1122 /* normally we would need to skip the entersub here */ 1163 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1164 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1165 /* PL_nop = PL_nop->op_next */
1125 1166
1126 /* inject a fake subroutine call to cctx_init */ 1167 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1168 cctx_prepare (aTHX);
1128 1169
1129 /* cctx_run is the alternative tail of transfer() */ 1170 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1171 transfer_tail (aTHX);
1132 1172
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1173 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1174 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1175 perl_run (PL_curinterp);
1176 /*
1177 * Unfortunately, there is no way to get at the return values of the
1178 * coro body here, as perl_run destroys these
1179 */
1136 1180
1137 /* 1181 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1182 * 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) 1183 * 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 1184 * 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" 1185 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * coroutine as Coro has no such concept 1186 * coroutine as Coro has no such concept.
1187 * This actually isn't valid with the pthread backend, but OSes requiring
1188 * that backend are too broken to do it in a standards-compliant way.
1143 */ 1189 */
1144 PL_top_env = main_top_env; 1190 PL_top_env = main_top_env;
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1191 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1192 }
1147} 1193}
… …
1224cctx_destroy (coro_cctx *cctx) 1270cctx_destroy (coro_cctx *cctx)
1225{ 1271{
1226 if (!cctx) 1272 if (!cctx)
1227 return; 1273 return;
1228 1274
1275 assert (cctx != cctx_current);//D temporary
1276
1229 --cctx_count; 1277 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1278 coro_destroy (&cctx->cctx);
1231 1279
1232 /* coro_transfer creates new, empty cctx's */ 1280 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1281 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1339/** coroutine switching *****************************************************/
1292 1340
1293static void 1341static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1342transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1343{
1344 /* TODO: throwing up here is considered harmful */
1345
1296 if (expect_true (prev != next)) 1346 if (expect_true (prev != next))
1297 { 1347 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1348 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,"); 1349 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1300 1350
1301 if (expect_false (next->flags & CF_RUNNING)) 1351 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,"); 1352 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303 1353
1304 if (expect_false (next->flags & CF_DESTROYED)) 1354 if (expect_false (next->flags & CF_DESTROYED))
… …
1310#endif 1360#endif
1311 } 1361 }
1312} 1362}
1313 1363
1314/* always use the TRANSFER macro */ 1364/* always use the TRANSFER macro */
1315static void NOINLINE 1365static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1366transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1367{
1318 dSTACKLEVEL; 1368 dSTACKLEVEL;
1319 1369
1320 /* sometimes transfer is only called to set idle_sp */ 1370 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1371 if (expect_false (!prev))
1322 { 1372 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1373 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1374 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1375 }
1326 else if (expect_true (prev != next)) 1376 else if (expect_true (prev != next))
1327 { 1377 {
1328 coro_cctx *prev__cctx; 1378 coro_cctx *cctx_prev;
1329 1379
1330 if (expect_false (prev->flags & CF_NEW)) 1380 if (expect_false (prev->flags & CF_NEW))
1331 { 1381 {
1332 /* create a new empty/source context */ 1382 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1383 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1384 prev->flags |= CF_RUNNING;
1336 } 1385 }
1337 1386
1338 prev->flags &= ~CF_RUNNING; 1387 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1398 coro_setup (aTHX_ next);
1350 } 1399 }
1351 else 1400 else
1352 load_perl (aTHX_ next); 1401 load_perl (aTHX_ next);
1353 1402
1354 prev__cctx = prev->cctx; 1403 assert (!prev->cctx);//D temporary
1355 1404
1356 /* possibly untie and reuse the cctx */ 1405 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1406 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1407 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1408 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1409 && !force_cctx
1361 )) 1410 ))
1362 { 1411 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1412 /* 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)); 1413 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1414
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 */ 1415 /* 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 */ 1416 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1417 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1418 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1419 next->cctx = cctx_get (aTHX);
1373 1420
1374 cctx_put (prev__cctx); 1421 cctx_put (cctx_current);
1375 } 1422 }
1423 else
1424 prev->cctx = cctx_current;
1376 1425
1377 ++next->usecount; 1426 ++next->usecount;
1378 1427
1379 if (expect_true (!next->cctx)) 1428 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1429 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1430
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1431 next->cctx = 0;
1383 transfer_next = next;
1384 1432
1385 if (expect_false (prev__cctx != next->cctx)) 1433 if (expect_false (cctx_prev != cctx_current))
1386 { 1434 {
1387 prev__cctx->top_env = PL_top_env; 1435 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1436 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1437 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1438 }
1391 1439
1392 transfer_tail (aTHX); 1440 transfer_tail (aTHX);
1393 } 1441 }
1394} 1442}
… …
1433 1481
1434 coro->slot = 0; 1482 coro->slot = 0;
1435 } 1483 }
1436 1484
1437 cctx_destroy (coro->cctx); 1485 cctx_destroy (coro->cctx);
1486 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1487 SvREFCNT_dec (coro->args);
1488 SvREFCNT_dec (CORO_THROW);
1439 1489
1440 if (coro->next) coro->next->prev = coro->prev; 1490 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1491 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1492 if (coro == coro_first) coro_first = coro->next;
1443 1493
… …
1497 1547
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1548 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1549 TRANSFER (ta, 1);
1500} 1550}
1501 1551
1552/*****************************************************************************/
1553/* gensub: simple closure generation utility */
1554
1555#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1556
1557/* create a closure from XS, returns a code reference */
1558/* the arg can be accessed via GENSUB_ARG from the callback */
1559/* the callback must use dXSARGS/XSRETURN */
1560static SV *
1561gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1562{
1563 CV *cv = (CV *)newSV (0);
1564
1565 sv_upgrade ((SV *)cv, SVt_PVCV);
1566
1567 CvANON_on (cv);
1568 CvISXSUB_on (cv);
1569 CvXSUB (cv) = xsub;
1570 GENSUB_ARG = arg;
1571
1572 return newRV_noinc ((SV *)cv);
1573}
1574
1502/** Coro ********************************************************************/ 1575/** Coro ********************************************************************/
1503 1576
1504INLINE void 1577INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1578coro_enq (pTHX_ struct coro *coro)
1506{ 1579{
… …
1524{ 1597{
1525 struct coro *coro; 1598 struct coro *coro;
1526 SV *sv_hook; 1599 SV *sv_hook;
1527 void (*xs_hook)(void); 1600 void (*xs_hook)(void);
1528 1601
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1602 coro = SvSTATE (coro_sv);
1533 1603
1534 if (coro->flags & CF_READY) 1604 if (coro->flags & CF_READY)
1535 return 0; 1605 return 0;
1536 1606
… …
1549 ENTER; 1619 ENTER;
1550 SAVETMPS; 1620 SAVETMPS;
1551 1621
1552 PUSHMARK (SP); 1622 PUSHMARK (SP);
1553 PUTBACK; 1623 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1624 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1625
1557 FREETMPS; 1626 FREETMPS;
1558 LEAVE; 1627 LEAVE;
1559 } 1628 }
1560 1629
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1637api_is_ready (pTHX_ SV *coro_sv)
1569{ 1638{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1639 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1640}
1572 1641
1642/* expects to own a reference to next->hv */
1573INLINE void 1643INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1644prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1645{
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); 1646 SV *prev_sv = SvRV (coro_current);
1647
1616 ta->prev = SvSTATE_hv (prev_sv); 1648 ta->prev = SvSTATE_hv (prev_sv);
1649 ta->next = next;
1650
1617 TRANSFER_CHECK (*ta); 1651 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1652
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1653 SvRV_set (coro_current, (SV *)next->hv);
1621 1654
1622 free_coro_mortal (aTHX); 1655 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1656 coro_mortal = prev_sv;
1624} 1657}
1625 1658
1659static void
1660prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1661{
1662 for (;;)
1663 {
1664 SV *next_sv = coro_deq (aTHX);
1665
1666 if (expect_true (next_sv))
1667 {
1668 struct coro *next = SvSTATE_hv (next_sv);
1669
1670 /* cannot transfer to destroyed coros, skip and look for next */
1671 if (expect_false (next->flags & CF_DESTROYED))
1672 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1673 else
1674 {
1675 next->flags &= ~CF_READY;
1676 --coro_nready;
1677
1678 prepare_schedule_to (aTHX_ ta, next);
1679 break;
1680 }
1681 }
1682 else
1683 {
1684 /* nothing to schedule: call the idle handler */
1685 if (SvROK (sv_idle)
1686 && SvOBJECT (SvRV (sv_idle)))
1687 {
1688 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1689 api_ready (aTHX_ SvRV (sv_idle));
1690 --coro_nready;
1691 }
1692 else
1693 {
1694 dSP;
1695
1696 ENTER;
1697 SAVETMPS;
1698
1699 PUSHMARK (SP);
1700 PUTBACK;
1701 call_sv (sv_idle, G_VOID | G_DISCARD);
1702
1703 FREETMPS;
1704 LEAVE;
1705 }
1706 }
1707 }
1708}
1709
1626INLINE void 1710INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1711prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1712{
1629 api_ready (aTHX_ coro_current); 1713 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1714 prepare_schedule (aTHX_ ta);
… …
1649{ 1733{
1650 struct coro_transfer_args ta; 1734 struct coro_transfer_args ta;
1651 1735
1652 prepare_schedule (aTHX_ &ta); 1736 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1737 TRANSFER (ta, 1);
1738}
1739
1740static void
1741api_schedule_to (pTHX_ SV *coro_sv)
1742{
1743 struct coro_transfer_args ta;
1744 struct coro *next = SvSTATE (coro_sv);
1745
1746 SvREFCNT_inc_NN (coro_sv);
1747 prepare_schedule_to (aTHX_ &ta, next);
1654} 1748}
1655 1749
1656static int 1750static int
1657api_cede (pTHX) 1751api_cede (pTHX)
1658{ 1752{
… …
1687static void 1781static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1782api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1783{
1690 struct coro *coro = SvSTATE (coro_sv); 1784 struct coro *coro = SvSTATE (coro_sv);
1691 1785
1786 if (coro->flags & CF_RUNNING)
1787 croak ("cannot enable tracing on a running coroutine, caught");
1788
1692 if (flags & CC_TRACE) 1789 if (flags & CC_TRACE)
1693 { 1790 {
1694 if (!coro->cctx) 1791 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1792 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1793 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1794 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1795
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1796 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1797 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1798 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1799 {
… …
1705 if (coro->flags & CF_RUNNING) 1802 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1803 PL_runops = RUNOPS_DEFAULT;
1707 else 1804 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1805 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1806 }
1807}
1808
1809static void
1810coro_call_on_destroy (pTHX_ struct coro *coro)
1811{
1812 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1813 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1814
1815 if (on_destroyp)
1816 {
1817 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1818
1819 while (AvFILLp (on_destroy) >= 0)
1820 {
1821 dSP; /* don't disturb outer sp */
1822 SV *cb = av_pop (on_destroy);
1823
1824 PUSHMARK (SP);
1825
1826 if (statusp)
1827 {
1828 int i;
1829 AV *status = (AV *)SvRV (*statusp);
1830 EXTEND (SP, AvFILLp (status) + 1);
1831
1832 for (i = 0; i <= AvFILLp (status); ++i)
1833 PUSHs (AvARRAY (status)[i]);
1834 }
1835
1836 PUTBACK;
1837 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1838 }
1839 }
1840}
1841
1842static void
1843slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1844{
1845 int i;
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *av = newAV ();
1848
1849 av_extend (av, items - 1);
1850 for (i = 0; i < items; ++i)
1851 av_push (av, SvREFCNT_inc_NN (arg [i]));
1852
1853 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1854
1855 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1856 api_ready (aTHX_ sv_manager);
1857
1858 frame->prepare = prepare_schedule;
1859 frame->check = slf_check_repeat;
1860}
1861
1862/*****************************************************************************/
1863/* async pool handler */
1864
1865static int
1866slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1867{
1868 HV *hv = (HV *)SvRV (coro_current);
1869 struct coro *coro = (struct coro *)frame->data;
1870
1871 if (!coro->invoke_cb)
1872 return 1; /* loop till we have invoke */
1873 else
1874 {
1875 hv_store (hv, "desc", sizeof ("desc") - 1,
1876 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1877
1878 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1879
1880 {
1881 dSP;
1882 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1883 PUTBACK;
1884 }
1885
1886 SvREFCNT_dec (GvAV (PL_defgv));
1887 GvAV (PL_defgv) = coro->invoke_av;
1888 coro->invoke_av = 0;
1889
1890 return 0;
1891 }
1892}
1893
1894static void
1895slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 HV *hv = (HV *)SvRV (coro_current);
1898 struct coro *coro = SvSTATE_hv ((SV *)hv);
1899
1900 if (expect_true (coro->saved_deffh))
1901 {
1902 /* subsequent iteration */
1903 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1904 coro->saved_deffh = 0;
1905
1906 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1907 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1908 {
1909 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1910 coro->invoke_av = newAV ();
1911
1912 frame->prepare = prepare_nop;
1913 }
1914 else
1915 {
1916 av_clear (GvAV (PL_defgv));
1917 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1918
1919 coro->prio = 0;
1920
1921 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1922 api_trace (aTHX_ coro_current, 0);
1923
1924 frame->prepare = prepare_schedule;
1925 av_push (av_async_pool, SvREFCNT_inc (hv));
1926 }
1927 }
1928 else
1929 {
1930 /* first iteration, simply fall through */
1931 frame->prepare = prepare_nop;
1932 }
1933
1934 frame->check = slf_check_pool_handler;
1935 frame->data = (void *)coro;
1936}
1937
1938/*****************************************************************************/
1939/* rouse callback */
1940
1941#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1942
1943static void
1944coro_rouse_callback (pTHX_ CV *cv)
1945{
1946 dXSARGS;
1947 SV *data = (SV *)GENSUB_ARG;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 {
1951 /* first call, set args */
1952 AV *av = newAV ();
1953 SV *coro = SvRV (data);
1954
1955 SvRV_set (data, (SV *)av);
1956 api_ready (aTHX_ coro);
1957 SvREFCNT_dec (coro);
1958
1959 /* better take a full copy of the arguments */
1960 while (items--)
1961 av_store (av, items, newSVsv (ST (items)));
1962 }
1963
1964 XSRETURN_EMPTY;
1965}
1966
1967static int
1968slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1969{
1970 SV *data = (SV *)frame->data;
1971
1972 if (CORO_THROW)
1973 return 0;
1974
1975 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1976 return 1;
1977
1978 /* now push all results on the stack */
1979 {
1980 dSP;
1981 AV *av = (AV *)SvRV (data);
1982 int i;
1983
1984 EXTEND (SP, AvFILLp (av) + 1);
1985 for (i = 0; i <= AvFILLp (av); ++i)
1986 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1987
1988 /* we have stolen the elements, so ste length to zero and free */
1989 AvFILLp (av) = -1;
1990 av_undef (av);
1991
1992 PUTBACK;
1993 }
1994
1995 return 0;
1996}
1997
1998static void
1999slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2000{
2001 SV *cb;
2002
2003 if (items)
2004 cb = arg [0];
2005 else
2006 {
2007 struct coro *coro = SvSTATE_current;
2008
2009 if (!coro->rouse_cb)
2010 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2011
2012 cb = sv_2mortal (coro->rouse_cb);
2013 coro->rouse_cb = 0;
2014 }
2015
2016 if (!SvROK (cb)
2017 || SvTYPE (SvRV (cb)) != SVt_PVCV
2018 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2019 croak ("Coro::rouse_wait called with illegal callback argument,");
2020
2021 {
2022 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2023 SV *data = (SV *)GENSUB_ARG;
2024
2025 frame->data = (void *)data;
2026 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2027 frame->check = slf_check_rouse_wait;
2028 }
2029}
2030
2031static SV *
2032coro_new_rouse_cb (pTHX)
2033{
2034 HV *hv = (HV *)SvRV (coro_current);
2035 struct coro *coro = SvSTATE_hv (hv);
2036 SV *data = newRV_inc ((SV *)hv);
2037 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2038
2039 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2040 SvREFCNT_dec (data); /* magicext increases the refcount */
2041
2042 SvREFCNT_dec (coro->rouse_cb);
2043 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2044
2045 return cb;
2046}
2047
2048/*****************************************************************************/
2049/* schedule-like-function opcode (SLF) */
2050
2051static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2052static const CV *slf_cv;
2053static SV **slf_argv;
2054static int slf_argc, slf_arga; /* count, allocated */
2055static I32 slf_ax; /* top of stack, for restore */
2056
2057/* this restores the stack in the case we patched the entersub, to */
2058/* recreate the stack frame as perl will on following calls */
2059/* since entersub cleared the stack */
2060static OP *
2061pp_restore (pTHX)
2062{
2063 int i;
2064 SV **SP = PL_stack_base + slf_ax;
2065
2066 PUSHMARK (SP);
2067
2068 EXTEND (SP, slf_argc + 1);
2069
2070 for (i = 0; i < slf_argc; ++i)
2071 PUSHs (sv_2mortal (slf_argv [i]));
2072
2073 PUSHs ((SV *)CvGV (slf_cv));
2074
2075 RETURNOP (slf_restore.op_first);
2076}
2077
2078static void
2079slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2080{
2081 SV **arg = (SV **)slf_frame.data;
2082
2083 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2084}
2085
2086static void
2087slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2088{
2089 if (items != 2)
2090 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2091
2092 frame->prepare = slf_prepare_transfer;
2093 frame->check = slf_check_nop;
2094 frame->data = (void *)arg; /* let's hope it will stay valid */
2095}
2096
2097static void
2098slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2099{
2100 frame->prepare = prepare_schedule;
2101 frame->check = slf_check_nop;
2102}
2103
2104static void
2105slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2106{
2107 struct coro *next = (struct coro *)slf_frame.data;
2108
2109 SvREFCNT_inc_NN (next->hv);
2110 prepare_schedule_to (aTHX_ ta, next);
2111}
2112
2113static void
2114slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 if (!items)
2117 croak ("Coro::schedule_to expects a coroutine argument, caught");
2118
2119 frame->data = (void *)SvSTATE (arg [0]);
2120 frame->prepare = slf_prepare_schedule_to;
2121 frame->check = slf_check_nop;
2122}
2123
2124static void
2125slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 api_ready (aTHX_ SvRV (coro_current));
2128
2129 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2130}
2131
2132static void
2133slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 frame->prepare = prepare_cede;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede_notself;
2143 frame->check = slf_check_nop;
2144}
2145
2146/*
2147 * these not obviously related functions are all rolled into one
2148 * function to increase chances that they all will call transfer with the same
2149 * stack offset
2150 * SLF stands for "schedule-like-function".
2151 */
2152static OP *
2153pp_slf (pTHX)
2154{
2155 I32 checkmark; /* mark SP to see how many elements check has pushed */
2156
2157 /* set up the slf frame, unless it has already been set-up */
2158 /* the latter happens when a new coro has been started */
2159 /* or when a new cctx was attached to an existing coroutine */
2160 if (expect_true (!slf_frame.prepare))
2161 {
2162 /* first iteration */
2163 dSP;
2164 SV **arg = PL_stack_base + TOPMARK + 1;
2165 int items = SP - arg; /* args without function object */
2166 SV *gv = *sp;
2167
2168 /* do a quick consistency check on the "function" object, and if it isn't */
2169 /* for us, divert to the real entersub */
2170 if (SvTYPE (gv) != SVt_PVGV
2171 || !GvCV (gv)
2172 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2173 return PL_ppaddr[OP_ENTERSUB](aTHX);
2174
2175 if (!(PL_op->op_flags & OPf_STACKED))
2176 {
2177 /* ampersand-form of call, use @_ instead of stack */
2178 AV *av = GvAV (PL_defgv);
2179 arg = AvARRAY (av);
2180 items = AvFILLp (av) + 1;
2181 }
2182
2183 /* now call the init function, which needs to set up slf_frame */
2184 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2185 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2186
2187 /* pop args */
2188 SP = PL_stack_base + POPMARK;
2189
2190 PUTBACK;
2191 }
2192
2193 /* now that we have a slf_frame, interpret it! */
2194 /* we use a callback system not to make the code needlessly */
2195 /* complicated, but so we can run multiple perl coros from one cctx */
2196
2197 do
2198 {
2199 struct coro_transfer_args ta;
2200
2201 slf_frame.prepare (aTHX_ &ta);
2202 TRANSFER (ta, 0);
2203
2204 checkmark = PL_stack_sp - PL_stack_base;
2205 }
2206 while (slf_frame.check (aTHX_ &slf_frame));
2207
2208 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2209
2210 /* exception handling */
2211 if (expect_false (CORO_THROW))
2212 {
2213 SV *exception = sv_2mortal (CORO_THROW);
2214
2215 CORO_THROW = 0;
2216 sv_setsv (ERRSV, exception);
2217 croak (0);
2218 }
2219
2220 /* return value handling - mostly like entersub */
2221 /* make sure we put something on the stack in scalar context */
2222 if (GIMME_V == G_SCALAR)
2223 {
2224 dSP;
2225 SV **bot = PL_stack_base + checkmark;
2226
2227 if (sp == bot) /* too few, push undef */
2228 bot [1] = &PL_sv_undef;
2229 else if (sp != bot + 1) /* too many, take last one */
2230 bot [1] = *sp;
2231
2232 SP = bot + 1;
2233
2234 PUTBACK;
2235 }
2236
2237 return NORMAL;
2238}
2239
2240static void
2241api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2242{
2243 int i;
2244 SV **arg = PL_stack_base + ax;
2245 int items = PL_stack_sp - arg + 1;
2246
2247 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2248
2249 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2250 && PL_op->op_ppaddr != pp_slf)
2251 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2252
2253 CvFLAGS (cv) |= CVf_SLF;
2254 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2255 slf_cv = cv;
2256
2257 /* we patch the op, and then re-run the whole call */
2258 /* we have to put the same argument on the stack for this to work */
2259 /* and this will be done by pp_restore */
2260 slf_restore.op_next = (OP *)&slf_restore;
2261 slf_restore.op_type = OP_CUSTOM;
2262 slf_restore.op_ppaddr = pp_restore;
2263 slf_restore.op_first = PL_op;
2264
2265 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2266
2267 if (PL_op->op_flags & OPf_STACKED)
2268 {
2269 if (items > slf_arga)
2270 {
2271 slf_arga = items;
2272 free (slf_argv);
2273 slf_argv = malloc (slf_arga * sizeof (SV *));
2274 }
2275
2276 slf_argc = items;
2277
2278 for (i = 0; i < items; ++i)
2279 slf_argv [i] = SvREFCNT_inc (arg [i]);
2280 }
2281 else
2282 slf_argc = 0;
2283
2284 PL_op->op_ppaddr = pp_slf;
2285 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2286
2287 PL_op = (OP *)&slf_restore;
1710} 2288}
1711 2289
1712/*****************************************************************************/ 2290/*****************************************************************************/
1713/* PerlIO::cede */ 2291/* PerlIO::cede */
1714 2292
… …
1783 PerlIOBuf_get_cnt, 2361 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2362 PerlIOBuf_set_ptrcnt,
1785}; 2363};
1786 2364
1787/*****************************************************************************/ 2365/*****************************************************************************/
2366/* Coro::Semaphore & Coro::Signal */
1788 2367
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 * 2368static SV *
1800pp_restore (pTHX) 2369coro_waitarray_new (pTHX_ int count)
1801{ 2370{
1802 dSP; 2371 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2372 AV *av = newAV ();
2373 SV **ary;
1803 2374
1804 PUSHMARK (SP); 2375 /* unfortunately, building manually saves memory */
2376 Newx (ary, 2, SV *);
2377 AvALLOC (av) = ary;
2378#if PERL_VERSION_ATLEAST (5,10,0)
2379 AvARRAY (av) = ary;
2380#else
2381 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2382 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2383 SvPVX ((SV *)av) = (char *)ary;
2384#endif
2385 AvMAX (av) = 1;
2386 AvFILLp (av) = 0;
2387 ary [0] = newSViv (count);
1805 2388
1806 EXTEND (SP, 3); 2389 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} 2390}
1814 2391
1815static void 2392/* 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 2393
1821static void 2394static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust) 2395coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2396{
1994 SV *count_sv = AvARRAY (av)[0]; 2397 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2398 IV count = SvIVX (count_sv);
1996 2399
1997 count += adjust; 2400 count += adjust;
1998 SvIVX (count_sv) = count; 2401 SvIVX (count_sv) = count;
1999 2402
2000 /* now wake up as many waiters as possible */ 2403 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2404 while (count > 0 && AvFILLp (av) > 0)
2002 { 2405 {
2003 SV *cb; 2406 SV *cb;
2004 2407
2005 /* swap first two elements so we can shift a waiter */ 2408 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2409 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2410 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2411 cb = av_shift (av);
2009 2412
2010 if (SvOBJECT (cb)) 2413 if (SvOBJECT (cb))
2414 {
2011 api_ready (aTHX_ cb); 2415 api_ready (aTHX_ cb);
2012 else 2416 --count;
2013 croak ("callbacks not yet supported"); 2417 }
2418 else if (SvTYPE (cb) == SVt_PVCV)
2419 {
2420 dSP;
2421 PUSHMARK (SP);
2422 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2423 PUTBACK;
2424 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2425 }
2014 2426
2015 SvREFCNT_dec (cb); 2427 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2428 }
2019} 2429}
2020 2430
2021static void 2431static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2432coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{ 2433{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2434 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2435 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2436}
2027 2437
2028static int 2438static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2439slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2440{
2031 AV *av = (AV *)frame->data; 2441 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2442 SV *count_sv = AvARRAY (av)[0];
2033 2443
2444 /* if we are about to throw, don't actually acquire the lock, just throw */
2445 if (CORO_THROW)
2446 return 0;
2034 if (SvIVX (count_sv) > 0) 2447 else if (SvIVX (count_sv) > 0)
2035 { 2448 {
2036 SvSTATE_current->on_destroy = 0; 2449 SvSTATE_current->on_destroy = 0;
2450
2451 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2452 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2453 else
2454 coro_semaphore_adjust (aTHX_ av, 0);
2455
2038 return 0; 2456 return 0;
2039 } 2457 }
2040 else 2458 else
2041 { 2459 {
2042 int i; 2460 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2469 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2470 return 1;
2053 } 2471 }
2054} 2472}
2055 2473
2056static void 2474static int
2475slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2476{
2477 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2478}
2479
2480static int
2481slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2482{
2483 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2484}
2485
2486static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2487slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2488{
2059 AV *av = (AV *)SvRV (arg [0]); 2489 AV *av = (AV *)SvRV (arg [0]);
2060 2490
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2491 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2492 {
… …
2072 2502
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2503 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2504 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2505 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 } 2506 }
2507}
2077 2508
2509static void
2510slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2511{
2512 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078 frame->check = slf_check_semaphore_down; 2513 frame->check = slf_check_semaphore_down;
2514}
2079 2515
2516static void
2517slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 if (items >= 2)
2520 {
2521 /* callback form */
2522 AV *av = (AV *)SvRV (arg [0]);
2523 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2524
2525 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2526
2527 if (SvIVX (AvARRAY (av)[0]) > 0)
2528 coro_semaphore_adjust (aTHX_ av, 0);
2529
2530 frame->prepare = prepare_nop;
2531 frame->check = slf_check_nop;
2532 }
2533 else
2534 {
2535 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2536 frame->check = slf_check_semaphore_wait;
2537 }
2538}
2539
2540/* signal */
2541
2542static void
2543coro_signal_wake (pTHX_ AV *av, int count)
2544{
2545 SvIVX (AvARRAY (av)[0]) = 0;
2546
2547 /* now signal count waiters */
2548 while (count > 0 && AvFILLp (av) > 0)
2549 {
2550 SV *cb;
2551
2552 /* swap first two elements so we can shift a waiter */
2553 cb = AvARRAY (av)[0];
2554 AvARRAY (av)[0] = AvARRAY (av)[1];
2555 AvARRAY (av)[1] = cb;
2556
2557 cb = av_shift (av);
2558
2559 api_ready (aTHX_ cb);
2560 sv_setiv (cb, 0); /* signal waiter */
2561 SvREFCNT_dec (cb);
2562
2563 --count;
2564 }
2565}
2566
2567static int
2568slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2569{
2570 /* if we are about to throw, also stop waiting */
2571 return SvROK ((SV *)frame->data) && !CORO_THROW;
2572}
2573
2574static void
2575slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 AV *av = (AV *)SvRV (arg [0]);
2578
2579 if (SvIVX (AvARRAY (av)[0]))
2580 {
2581 SvIVX (AvARRAY (av)[0]) = 0;
2582 frame->prepare = prepare_nop;
2583 frame->check = slf_check_nop;
2584 }
2585 else
2586 {
2587 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2588
2589 av_push (av, waiter);
2590
2591 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2592 frame->prepare = prepare_schedule;
2593 frame->check = slf_check_signal_wait;
2594 }
2080} 2595}
2081 2596
2082/*****************************************************************************/ 2597/*****************************************************************************/
2598/* Coro::AIO */
2083 2599
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2600#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 2601
2086/* create a closure from XS, returns a code reference */ 2602/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 2603struct io_state
2088/* the callback must use dXSARGS/XSRETURN */
2089static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091{ 2604{
2092 CV *cv = (CV *)NEWSV (0, 0); 2605 int errorno;
2606 I32 laststype; /* U16 in 5.10.0 */
2607 int laststatval;
2608 Stat_t statcache;
2609};
2093 2610
2611static void
2612coro_aio_callback (pTHX_ CV *cv)
2613{
2614 dXSARGS;
2615 AV *state = (AV *)GENSUB_ARG;
2616 SV *coro = av_pop (state);
2617 SV *data_sv = newSV (sizeof (struct io_state));
2618
2619 av_extend (state, items - 1);
2620
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 2621 sv_upgrade (data_sv, SVt_PV);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2095 2624
2096 CvANON_on (cv); 2625 {
2097 CvISXSUB_on (cv); 2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2098 CvXSUB (cv) = xsub;
2099 GENSUB_ARG = arg;
2100 2627
2101 return newRV_noinc ((SV *)cv); 2628 data->errorno = errno;
2629 data->laststype = PL_laststype;
2630 data->laststatval = PL_laststatval;
2631 data->statcache = PL_statcache;
2632 }
2633
2634 /* now build the result vector out of all the parameters and the data_sv */
2635 {
2636 int i;
2637
2638 for (i = 0; i < items; ++i)
2639 av_push (state, SvREFCNT_inc_NN (ST (i)));
2640 }
2641
2642 av_push (state, data_sv);
2643
2644 api_ready (aTHX_ coro);
2645 SvREFCNT_dec (coro);
2646 SvREFCNT_dec ((AV *)state);
2647}
2648
2649static int
2650slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2651{
2652 AV *state = (AV *)frame->data;
2653
2654 /* if we are about to throw, return early */
2655 /* this does not cancel the aio request, but at least */
2656 /* it quickly returns */
2657 if (CORO_THROW)
2658 return 0;
2659
2660 /* one element that is an RV? repeat! */
2661 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2662 return 1;
2663
2664 /* restore status */
2665 {
2666 SV *data_sv = av_pop (state);
2667 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2668
2669 errno = data->errorno;
2670 PL_laststype = data->laststype;
2671 PL_laststatval = data->laststatval;
2672 PL_statcache = data->statcache;
2673
2674 SvREFCNT_dec (data_sv);
2675 }
2676
2677 /* push result values */
2678 {
2679 dSP;
2680 int i;
2681
2682 EXTEND (SP, AvFILLp (state) + 1);
2683 for (i = 0; i <= AvFILLp (state); ++i)
2684 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2685
2686 PUTBACK;
2687 }
2688
2689 return 0;
2690}
2691
2692static void
2693slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2694{
2695 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2696 SV *coro_hv = SvRV (coro_current);
2697 struct coro *coro = SvSTATE_hv (coro_hv);
2698
2699 /* put our coroutine id on the state arg */
2700 av_push (state, SvREFCNT_inc_NN (coro_hv));
2701
2702 /* first see whether we have a non-zero priority and set it as AIO prio */
2703 if (coro->prio)
2704 {
2705 dSP;
2706
2707 static SV *prio_cv;
2708 static SV *prio_sv;
2709
2710 if (expect_false (!prio_cv))
2711 {
2712 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2713 prio_sv = newSViv (0);
2714 }
2715
2716 PUSHMARK (SP);
2717 sv_setiv (prio_sv, coro->prio);
2718 XPUSHs (prio_sv);
2719
2720 PUTBACK;
2721 call_sv (prio_cv, G_VOID | G_DISCARD);
2722 }
2723
2724 /* now call the original request */
2725 {
2726 dSP;
2727 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2728 int i;
2729
2730 PUSHMARK (SP);
2731
2732 /* first push all args to the stack */
2733 EXTEND (SP, items + 1);
2734
2735 for (i = 0; i < items; ++i)
2736 PUSHs (arg [i]);
2737
2738 /* now push the callback closure */
2739 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2740
2741 /* now call the AIO function - we assume our request is uncancelable */
2742 PUTBACK;
2743 call_sv ((SV *)req, G_VOID | G_DISCARD);
2744 }
2745
2746 /* now that the requets is going, we loop toll we have a result */
2747 frame->data = (void *)state;
2748 frame->prepare = prepare_schedule;
2749 frame->check = slf_check_aio_req;
2750}
2751
2752static void
2753coro_aio_req_xs (pTHX_ CV *cv)
2754{
2755 dXSARGS;
2756
2757 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2758
2759 XSRETURN_EMPTY;
2102} 2760}
2103 2761
2104/*****************************************************************************/ 2762/*****************************************************************************/
2763
2764#if CORO_CLONE
2765# include "clone.c"
2766#endif
2105 2767
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2768MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 2769
2108PROTOTYPES: DISABLE 2770PROTOTYPES: DISABLE
2109 2771
… …
2114 coro_thx = PERL_GET_CONTEXT; 2776 coro_thx = PERL_GET_CONTEXT;
2115# endif 2777# endif
2116#endif 2778#endif
2117 BOOT_PAGESIZE; 2779 BOOT_PAGESIZE;
2118 2780
2781 cctx_current = cctx_new_empty ();
2782
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2783 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2784 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 2785
2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2786 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2123 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2787 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2142 2806
2143 { 2807 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2808 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 2809
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2810 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 2811 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 2812
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2813 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 2814 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 2815 }
2154 2816
2155 coroapi.ver = CORO_API_VERSION; 2817 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 2818 coroapi.rev = CORO_API_REVISION;
2157 2819
… …
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2838 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2177} 2839}
2178 2840
2179SV * 2841SV *
2180new (char *klass, ...) 2842new (char *klass, ...)
2843 ALIAS:
2844 Coro::new = 1
2181 CODE: 2845 CODE:
2182{ 2846{
2183 struct coro *coro; 2847 struct coro *coro;
2184 MAGIC *mg; 2848 MAGIC *mg;
2185 HV *hv; 2849 HV *hv;
2850 CV *cb;
2186 int i; 2851 int i;
2852
2853 if (items > 1)
2854 {
2855 cb = coro_sv_2cv (aTHX_ ST (1));
2856
2857 if (!ix)
2858 {
2859 if (CvISXSUB (cb))
2860 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2861
2862 if (!CvROOT (cb))
2863 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2864 }
2865 }
2187 2866
2188 Newz (0, coro, 1, struct coro); 2867 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV (); 2868 coro->args = newAV ();
2190 coro->flags = CF_NEW; 2869 coro->flags = CF_NEW;
2191 2870
… …
2196 coro->hv = hv = newHV (); 2875 coro->hv = hv = newHV ();
2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2876 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP; 2877 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2878 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200 2879
2880 if (items > 1)
2881 {
2201 av_extend (coro->args, items - 1); 2882 av_extend (coro->args, items - 1 + ix - 1);
2883
2884 if (ix)
2885 {
2886 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2887 cb = cv_coro_run;
2888 }
2889
2890 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2891
2202 for (i = 1; i < items; i++) 2892 for (i = 2; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i))); 2893 av_push (coro->args, newSVsv (ST (i)));
2894 }
2204} 2895}
2205 OUTPUT: 2896 OUTPUT:
2206 RETVAL 2897 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 2898
2213void 2899void
2214transfer (...) 2900transfer (...)
2215 PROTOTYPE: $$ 2901 PROTOTYPE: $$
2216 CODE: 2902 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2903 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 2904
2219bool 2905bool
2220_destroy (SV *coro_sv) 2906_destroy (SV *coro_sv)
2221 CODE: 2907 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2226void 2912void
2227_exit (int code) 2913_exit (int code)
2228 PROTOTYPE: $ 2914 PROTOTYPE: $
2229 CODE: 2915 CODE:
2230 _exit (code); 2916 _exit (code);
2917
2918SV *
2919clone (Coro::State coro)
2920 CODE:
2921{
2922#if CORO_CLONE
2923 struct coro *ncoro = coro_clone (coro);
2924 MAGIC *mg;
2925 /* TODO: too much duplication */
2926 ncoro->hv = newHV ();
2927 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2928 mg->mg_flags |= MGf_DUP;
2929 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2930#else
2931 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2932#endif
2933}
2934 OUTPUT:
2935 RETVAL
2231 2936
2232int 2937int
2233cctx_stacksize (int new_stacksize = 0) 2938cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 2939 PROTOTYPE: ;$
2235 CODE: 2940 CODE:
… …
2340 3045
2341void 3046void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3047throw (Coro::State self, SV *throw = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3048 PROTOTYPE: $;$
2344 CODE: 3049 CODE:
3050{
3051 struct coro *current = SvSTATE_current;
3052 SV **throwp = self == current ? &CORO_THROW : &self->except;
2345 SvREFCNT_dec (self->throw); 3053 SvREFCNT_dec (*throwp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3054 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3055}
2347 3056
2348void 3057void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3058api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3059 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3060 C_ARGS: aTHX_ coro, flags
2352 3061
2353SV * 3062SV *
2354has_cctx (Coro::State coro) 3063has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3064 PROTOTYPE: $
2356 CODE: 3065 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3066 /* maybe manage the running flag differently */
3067 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3068 OUTPUT:
2359 RETVAL 3069 RETVAL
2360 3070
2361int 3071int
2362is_traced (Coro::State coro) 3072is_traced (Coro::State coro)
… …
2382 3092
2383void 3093void
2384force_cctx () 3094force_cctx ()
2385 PROTOTYPE: 3095 PROTOTYPE:
2386 CODE: 3096 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3097 cctx_current->idle_sp = 0;
2388 3098
2389void 3099void
2390swap_defsv (Coro::State self) 3100swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3101 PROTOTYPE: $
2392 ALIAS: 3102 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3110 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3111
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3112 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3113 }
2404 3114
3115
2405MODULE = Coro::State PACKAGE = Coro 3116MODULE = Coro::State PACKAGE = Coro
2406 3117
2407BOOT: 3118BOOT:
2408{ 3119{
2409 int i; 3120 int i;
2410 3121
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3122 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3123 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3124 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3125 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3126 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 SvREADONLY_on (coro_current); 3127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3128 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3129 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3130 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3131
3132 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3133 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3134 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3135 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2417 3136
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3137 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3138
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3139 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3140 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2429 3148
2430 { 3149 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3150 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3151
2433 coroapi.schedule = api_schedule; 3152 coroapi.schedule = api_schedule;
3153 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3154 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3155 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3156 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3157 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3158 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3159 coroapi.current = coro_current;
2440 3160
2441 GCoroAPI = &coroapi; 3161 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3162 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3163 SvREADONLY_on (sv);
2444 } 3164 }
2445} 3165}
2446 3166
2447void 3167void
3168terminate (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3171
3172void
2448schedule (...) 3173schedule (...)
2449 CODE: 3174 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3175 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3176
3177void
3178schedule_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3181
3182void
3183cede_to (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2451 3186
2452void 3187void
2453cede (...) 3188cede (...)
2454 CODE: 3189 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3190 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3191
2457void 3192void
2458cede_notself (...) 3193cede_notself (...)
2459 CODE: 3194 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3195 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3196
3197void
3198_cancel (Coro::State self)
3199 CODE:
3200 coro_state_destroy (aTHX_ self);
3201 coro_call_on_destroy (aTHX_ self);
2461 3202
2462void 3203void
2463_set_current (SV *current) 3204_set_current (SV *current)
2464 PROTOTYPE: $ 3205 PROTOTYPE: $
2465 CODE: 3206 CODE:
… …
2510 CODE: 3251 CODE:
2511 RETVAL = coro_nready; 3252 RETVAL = coro_nready;
2512 OUTPUT: 3253 OUTPUT:
2513 RETVAL 3254 RETVAL
2514 3255
2515# for async_pool speedup
2516void 3256void
2517_pool_1 (SV *cb) 3257_pool_handler (...)
2518 CODE: 3258 CODE:
2519{ 3259 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
2522 AV *defav = GvAV (PL_defgv);
2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524 AV *invoke_av;
2525 int i, len;
2526
2527 if (!invoke)
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 SvREFCNT_dec (coro->saved_deffh);
2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538 hv_store (hv, "desc", sizeof ("desc") - 1,
2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541 invoke_av = (AV *)SvRV (invoke);
2542 len = av_len (invoke_av);
2543
2544 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546 if (len > 0)
2547 {
2548 av_fill (defav, len - 1);
2549 for (i = 0; i < len; ++i)
2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2551 }
2552}
2553 3260
2554void 3261void
2555_pool_2 (SV *cb) 3262async_pool (SV *cv, ...)
2556 CODE:
2557{
2558 struct coro *coro = SvSTATE_current;
2559
2560 sv_setsv (cb, &PL_sv_undef);
2561
2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2563 coro->saved_deffh = 0;
2564
2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
2571 croak ("\3async_pool terminate\2\n");
2572 }
2573
2574 av_clear (GvAV (PL_defgv));
2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578 coro->prio = 0;
2579
2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581 api_trace (aTHX_ coro_current, 0);
2582
2583 av_push (av_async_pool, newSVsv (coro_current));
2584}
2585
2586
2587MODULE = Coro::State PACKAGE = Coro::AIO
2588
2589void
2590_get_state (SV *self)
2591 PROTOTYPE: $ 3263 PROTOTYPE: &@
2592 PPCODE: 3264 PPCODE:
2593{ 3265{
2594 AV *defav = GvAV (PL_defgv); 3266 HV *hv = (HV *)av_pop (av_async_pool);
2595 AV *av = newAV (); 3267 AV *av = newAV ();
3268 SV *cb = ST (0);
2596 int i; 3269 int i;
2597 SV *data_sv = newSV (sizeof (struct io_state));
2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599 SvCUR_set (data_sv, sizeof (struct io_state));
2600 SvPOK_only (data_sv);
2601 3270
2602 data->errorno = errno; 3271 av_extend (av, items - 2);
2603 data->laststype = PL_laststype; 3272 for (i = 1; i < items; ++i)
2604 data->laststatval = PL_laststatval;
2605 data->statcache = PL_statcache;
2606
2607 av_extend (av, AvFILLp (defav) + 1 + 1);
2608
2609 for (i = 0; i <= AvFILLp (defav); ++i)
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3273 av_push (av, SvREFCNT_inc_NN (ST (i)));
2611 3274
2612 av_push (av, data_sv); 3275 if ((SV *)hv == &PL_sv_undef)
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
2617}
2618
2619void
2620_set_state (SV *state)
2621 PROTOTYPE: $
2622 PPCODE:
2623{
2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
2627
2628 errno = data->errorno;
2629 PL_laststype = data->laststype;
2630 PL_laststatval = data->laststatval;
2631 PL_statcache = data->statcache;
2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 { 3276 {
2659 PUSHMARK (SP); 3277 PUSHMARK (SP);
3278 EXTEND (SP, 2);
3279 PUSHs (sv_Coro);
3280 PUSHs ((SV *)cv_pool_handler);
2660 PUTBACK; 3281 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3282 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2662 SPAGAIN; 3283 SPAGAIN;
3284
3285 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2663 } 3286 }
2664 3287
2665 --incede; 3288 {
3289 struct coro *coro = SvSTATE_hv (hv);
3290
3291 assert (!coro->invoke_cb);
3292 assert (!coro->invoke_av);
3293 coro->invoke_cb = SvREFCNT_inc (cb);
3294 coro->invoke_av = av;
3295 }
3296
3297 api_ready (aTHX_ (SV *)hv);
3298
3299 if (GIMME_V != G_VOID)
3300 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3301 else
3302 SvREFCNT_dec (hv);
2666} 3303}
3304
3305SV *
3306rouse_cb ()
3307 PROTOTYPE:
3308 CODE:
3309 RETVAL = coro_new_rouse_cb (aTHX);
3310 OUTPUT:
3311 RETVAL
3312
3313void
3314rouse_wait (...)
3315 PROTOTYPE: ;$
3316 PPCODE:
3317 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2667 3318
2668 3319
2669MODULE = Coro::State PACKAGE = PerlIO::cede 3320MODULE = Coro::State PACKAGE = PerlIO::cede
2670 3321
2671BOOT: 3322BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 3324
3325
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 3326MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 3327
2676SV * 3328SV *
2677new (SV *klass, SV *count_ = 0) 3329new (SV *klass, SV *count = 0)
2678 CODE: 3330 CODE:
2679{ 3331 RETVAL = sv_bless (
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3332 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2681 AV *av = newAV (); 3333 GvSTASH (CvGV (cv))
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3334 );
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3335 OUTPUT:
2684} 3336 RETVAL
3337
3338# helper for Coro::Channel
3339SV *
3340_alloc (int count)
3341 CODE:
3342 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 3343 OUTPUT:
2686 RETVAL 3344 RETVAL
2687 3345
2688SV * 3346SV *
2689count (SV *self) 3347count (SV *self)
… …
2698 adjust = 1 3356 adjust = 1
2699 CODE: 3357 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 3359
2702void 3360void
2703down (SV *self) 3361down (...)
2704 CODE: 3362 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3364
3365void
3366wait (...)
3367 CODE:
3368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 3369
2707void 3370void
2708try (SV *self) 3371try (SV *self)
2709 PPCODE: 3372 PPCODE:
2710{ 3373{
… …
2722 XSRETURN_NO; 3385 XSRETURN_NO;
2723} 3386}
2724 3387
2725void 3388void
2726waiters (SV *self) 3389waiters (SV *self)
2727 CODE: 3390 PPCODE:
2728{ 3391{
2729 AV *av = (AV *)SvRV (self); 3392 AV *av = (AV *)SvRV (self);
3393 int wcount = AvFILLp (av) + 1 - 1;
2730 3394
2731 if (GIMME_V == G_SCALAR) 3395 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3396 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 3397 else
2734 { 3398 {
2735 int i; 3399 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 3400 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 3401 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 3402 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 3403 }
2740} 3404}
2741 3405
3406MODULE = Coro::State PACKAGE = Coro::Signal
3407
3408SV *
3409new (SV *klass)
3410 CODE:
3411 RETVAL = sv_bless (
3412 coro_waitarray_new (aTHX_ 0),
3413 GvSTASH (CvGV (cv))
3414 );
3415 OUTPUT:
3416 RETVAL
3417
3418void
3419wait (...)
3420 CODE:
3421 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3422
3423void
3424broadcast (SV *self)
3425 CODE:
3426{
3427 AV *av = (AV *)SvRV (self);
3428 coro_signal_wake (aTHX_ av, AvFILLp (av));
3429}
3430
3431void
3432send (SV *self)
3433 CODE:
3434{
3435 AV *av = (AV *)SvRV (self);
3436
3437 if (AvFILLp (av))
3438 coro_signal_wake (aTHX_ av, 1);
3439 else
3440 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3441}
3442
3443IV
3444awaited (SV *self)
3445 CODE:
3446 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3447 OUTPUT:
3448 RETVAL
3449
3450
3451MODULE = Coro::State PACKAGE = Coro::AnyEvent
3452
3453BOOT:
3454 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3455
3456void
3457_schedule (...)
3458 CODE:
3459{
3460 static int incede;
3461
3462 api_cede_notself (aTHX);
3463
3464 ++incede;
3465 while (coro_nready >= incede && api_cede (aTHX))
3466 ;
3467
3468 sv_setsv (sv_activity, &PL_sv_undef);
3469 if (coro_nready >= incede)
3470 {
3471 PUSHMARK (SP);
3472 PUTBACK;
3473 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3474 }
3475
3476 --incede;
3477}
3478
3479
3480MODULE = Coro::State PACKAGE = Coro::AIO
3481
3482void
3483_register (char *target, char *proto, SV *req)
3484 CODE:
3485{
3486 CV *req_cv = coro_sv_2cv (aTHX_ req);
3487 /* newXSproto doesn't return the CV on 5.8 */
3488 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3489 sv_setpv ((SV *)slf_cv, proto);
3490 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3491}
3492

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