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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 1.349 by root, Wed Jun 10 00:47:24 2009 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 */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
226}; 244};
227 245
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 247typedef struct
230{ 248{
231 SV *defsv; 249 SV *defsv;
232 AV *defav; 250 AV *defav;
233 SV *errsv; 251 SV *errsv;
234 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
235#define VAR(name,type) type name; 254#define VAR(name,type) type name;
236# include "state.h" 255# include "state.h"
237#undef VAR 256#undef VAR
238} perl_slots; 257} perl_slots;
239 258
… …
242/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
243struct coro { 262struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 264 coro_cctx *cctx;
246 265
247 /* process data */ 266 /* ready queue */
267 struct coro *next_ready;
268
269 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 270 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 271 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 272 perl_slots *slot; /* basically the saved sp */
251 273
274 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 275 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 276 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 277 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 278 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 279 void (*on_destroy)(pTHX_ struct coro *coro);
257 280
258 /* statistics */ 281 /* statistics */
259 int usecount; /* number of transfers to this coro */ 282 int usecount; /* number of transfers to this coro */
260 283
261 /* coro process data */ 284 /* coro process data */
262 int prio; 285 int prio;
263 SV *throw; /* exception to be thrown */ 286 SV *except; /* exception to be thrown */
287 SV *rouse_cb;
264 288
265 /* async_pool */ 289 /* async_pool */
266 SV *saved_deffh; 290 SV *saved_deffh;
291 SV *invoke_cb;
292 AV *invoke_av;
293
294 /* on_enter/on_leave */
295 AV *on_enter;
296 AV *on_leave;
267 297
268 /* linked list */ 298 /* linked list */
269 struct coro *next, *prev; 299 struct coro *next, *prev;
270}; 300};
271 301
272typedef struct coro *Coro__State; 302typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 303typedef struct coro *Coro__State_or_hashref;
274 304
305/* the following variables are effectively part of the perl context */
306/* and get copied between struct coro and these variables */
307/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 308static struct CoroSLF slf_frame; /* the current slf frame */
276 309
277/** Coro ********************************************************************/ 310/** Coro ********************************************************************/
278 311
279#define PRIO_MAX 3 312#define PRIO_MAX 3
… …
284#define PRIO_MIN -4 317#define PRIO_MIN -4
285 318
286/* for Coro.pm */ 319/* for Coro.pm */
287static SV *coro_current; 320static SV *coro_current;
288static SV *coro_readyhook; 321static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 322static struct coro *coro_ready [PRIO_MAX - PRIO_MIN + 1][2]; /* head|tail */
323static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 324static struct coro *coro_first;
291#define coro_nready coroapi.nready 325#define coro_nready coroapi.nready
292 326
293/** lowlevel stuff **********************************************************/ 327/** lowlevel stuff **********************************************************/
294 328
… …
320 get_hv (name, create); 354 get_hv (name, create);
321#endif 355#endif
322 return get_hv (name, create); 356 return get_hv (name, create);
323} 357}
324 358
359/* may croak */
360INLINE CV *
361coro_sv_2cv (pTHX_ SV *sv)
362{
363 HV *st;
364 GV *gvp;
365 CV *cv = sv_2cv (sv, &st, &gvp, 0);
366
367 if (!cv)
368 croak ("code reference expected");
369
370 return cv;
371}
372
373/*****************************************************************************/
374/* magic glue */
375
376#define CORO_MAGIC_type_cv 26
377#define CORO_MAGIC_type_state PERL_MAGIC_ext
378
379#define CORO_MAGIC_NN(sv, type) \
380 (expect_true (SvMAGIC (sv)->mg_type == type) \
381 ? SvMAGIC (sv) \
382 : mg_find (sv, type))
383
384#define CORO_MAGIC(sv, type) \
385 (expect_true (SvMAGIC (sv)) \
386 ? CORO_MAGIC_NN (sv, type) \
387 : 0)
388
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
391
392INLINE struct coro *
393SvSTATE_ (pTHX_ SV *coro)
394{
395 HV *stash;
396 MAGIC *mg;
397
398 if (SvROK (coro))
399 coro = SvRV (coro);
400
401 if (expect_false (SvTYPE (coro) != SVt_PVHV))
402 croak ("Coro::State object required");
403
404 stash = SvSTASH (coro);
405 if (expect_false (stash != coro_stash && stash != coro_state_stash))
406 {
407 /* very slow, but rare, check */
408 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
409 croak ("Coro::State object required");
410 }
411
412 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr;
414}
415
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
417
418/* faster than SvSTATE, but expects a coroutine hv */
419#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
420#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421
422/*****************************************************************************/
423/* padlist management and caching */
424
325static AV * 425static AV *
326coro_clone_padlist (pTHX_ CV *cv) 426coro_derive_padlist (pTHX_ CV *cv)
327{ 427{
328 AV *padlist = CvPADLIST (cv); 428 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 429 AV *newpadlist, *newpad;
330 430
331 newpadlist = newAV (); 431 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 436 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 437#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 438 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 439 --AvFILLp (padlist);
340 440
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 441 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 442 av_store (newpadlist, 1, (SV *)newpad);
343 443
344 return newpadlist; 444 return newpadlist;
345} 445}
346 446
347static void 447static void
348free_padlist (pTHX_ AV *padlist) 448free_padlist (pTHX_ AV *padlist)
349{ 449{
350 /* may be during global destruction */ 450 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 451 if (!IN_DESTRUCT)
352 { 452 {
353 I32 i = AvFILLp (padlist); 453 I32 i = AvFILLp (padlist);
354 while (i >= 0) 454
455 while (i > 0) /* special-case index 0 */
355 { 456 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 457 /* we try to be extra-careful here */
357 if (svp) 458 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 459 I32 j = AvFILLp (av);
359 SV *sv; 460
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 461 while (j >= 0)
462 SvREFCNT_dec (AvARRAY (av)[j--]);
463
464 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 465 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 466 }
366 467
468 SvREFCNT_dec (AvARRAY (padlist)[0]);
469
470 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 471 SvREFCNT_dec ((SV*)padlist);
368 } 472 }
369} 473}
370 474
371static int 475static int
… …
380 484
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 485 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 486
383 return 0; 487 return 0;
384} 488}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 489
389static MGVTBL coro_cv_vtbl = { 490static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 491 0, 0, 0, 0,
391 coro_cv_free 492 coro_cv_free
392}; 493};
393
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 494
443/* the next two functions merely cache the padlists */ 495/* the next two functions merely cache the padlists */
444static void 496static void
445get_padlist (pTHX_ CV *cv) 497get_padlist (pTHX_ CV *cv)
446{ 498{
… …
452 else 504 else
453 { 505 {
454#if CORO_PREFER_PERL_FUNCTIONS 506#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 507 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 508 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 509 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 510 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 511 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 512 SvREFCNT_dec (cp);
461#else 513#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 514 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 515#endif
464 } 516 }
465} 517}
466 518
467static void 519static void
… …
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 526 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
475 527
476 av = (AV *)mg->mg_obj; 528 av = (AV *)mg->mg_obj;
477 529
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 530 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 531 av_extend (av, AvFILLp (av) + 1);
480 532
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 533 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 534}
483 535
484/** load & save, init *******************************************************/ 536/** load & save, init *******************************************************/
537
538static void
539on_enterleave_call (pTHX_ SV *cb);
485 540
486static void 541static void
487load_perl (pTHX_ Coro__State c) 542load_perl (pTHX_ Coro__State c)
488{ 543{
489 perl_slots *slot = c->slot; 544 perl_slots *slot = c->slot;
490 c->slot = 0; 545 c->slot = 0;
491 546
492 PL_mainstack = c->mainstack; 547 PL_mainstack = c->mainstack;
493 548
494 GvSV (PL_defgv) = slot->defsv; 549 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 550 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 551 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 552 GvSV (irsgv) = slot->irsgv;
553 GvHV (PL_hintgv) = slot->hinthv;
498 554
499 #define VAR(name,type) PL_ ## name = slot->name; 555 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 556 # include "state.h"
501 #undef VAR 557 #undef VAR
502 558
… …
514 } 570 }
515 571
516 PUTBACK; 572 PUTBACK;
517 } 573 }
518 574
519 slf_frame = c->slf_frame; 575 slf_frame = c->slf_frame;
576 CORO_THROW = c->except;
577
578 if (expect_false (c->on_enter))
579 {
580 int i;
581
582 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
583 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
584 }
520} 585}
521 586
522static void 587static void
523save_perl (pTHX_ Coro__State c) 588save_perl (pTHX_ Coro__State c)
524{ 589{
590 if (expect_false (c->on_leave))
591 {
592 int i;
593
594 for (i = AvFILLp (c->on_leave); i >= 0; --i)
595 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
596 }
597
598 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 599 c->slf_frame = slf_frame;
526 600
527 { 601 {
528 dSP; 602 dSP;
529 I32 cxix = cxstack_ix; 603 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 660 c->mainstack = PL_mainstack;
587 661
588 { 662 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 663 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 664
591 slot->defav = GvAV (PL_defgv); 665 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 666 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 667 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 668 slot->irsgv = GvSV (irsgv);
669 slot->hinthv = GvHV (PL_hintgv);
595 670
596 #define VAR(name,type) slot->name = PL_ ## name; 671 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 672 # include "state.h"
598 #undef VAR 673 #undef VAR
599 } 674 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 679 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 680 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 681 * not usually need a lot of stackspace.
607 */ 682 */
608#if CORO_PREFER_PERL_FUNCTIONS 683#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 684# define coro_init_stacks(thx) init_stacks ()
610#else 685#else
611static void 686static void
612coro_init_stacks (pTHX) 687coro_init_stacks (pTHX)
613{ 688{
614 PL_curstackinfo = new_stackinfo(32, 8); 689 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 752#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 753 Safefree (PL_retstack);
679#endif 754#endif
680} 755}
681 756
757#define CORO_RSS \
758 rss += sizeof (SYM (curstackinfo)); \
759 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
760 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
761 rss += SYM (tmps_max) * sizeof (SV *); \
762 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
763 rss += SYM (scopestack_max) * sizeof (I32); \
764 rss += SYM (savestack_max) * sizeof (ANY);
765
682static size_t 766static size_t
683coro_rss (pTHX_ struct coro *coro) 767coro_rss (pTHX_ struct coro *coro)
684{ 768{
685 size_t rss = sizeof (*coro); 769 size_t rss = sizeof (*coro);
686 770
687 if (coro->mainstack) 771 if (coro->mainstack)
688 { 772 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 773 if (coro->flags & CF_RUNNING)
693 { 774 {
694 slot = &tmp_slot; 775 #define SYM(sym) PL_ ## sym
695 776 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 777 #undef SYM
699 } 778 }
700 else 779 else
701 slot = coro->slot;
702
703 if (slot)
704 { 780 {
705 rss += sizeof (slot->curstackinfo); 781 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 782 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 783 #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 } 784 }
717 } 785 }
718 786
719 return rss; 787 return rss;
720} 788}
… …
733#endif 801#endif
734 802
735/* 803/*
736 * This overrides the default magic get method of %SIG elements. 804 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 805 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 806 * and instead of trying to save and restore the hash elements, we just provide
739 * readback here. 807 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 808 */
744static int 809static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 810coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 811{
747 const char *s = MgPV_nolen_const (mg); 812 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 865 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 866
802 if (svp) 867 if (svp)
803 { 868 {
804 SV *old = *svp; 869 SV *old = *svp;
805 *svp = newSVsv (sv); 870 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 871 SvREFCNT_dec (old);
807 return 0; 872 return 0;
808 } 873 }
809 } 874 }
810 875
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 887slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 888{
824 return 0; 889 return 0;
825} 890}
826 891
827static void 892static int
893slf_check_repeat (pTHX_ struct CoroSLF *frame)
894{
895 return 1;
896}
897
898static UNOP coro_setup_op;
899
900static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 901coro_setup (pTHX_ struct coro *coro)
829{ 902{
830 /* 903 /*
831 * emulate part of the perl startup here. 904 * emulate part of the perl startup here.
832 */ 905 */
… …
834 907
835 PL_runops = RUNOPS_DEFAULT; 908 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 909 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 910 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 911 PL_comppad = 0;
912 PL_comppad_name = 0;
913 PL_comppad_name_fill = 0;
914 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 915 PL_curpm = 0;
840 PL_curpad = 0; 916 PL_curpad = 0;
841 PL_localizing = 0; 917 PL_localizing = 0;
842 PL_dirty = 0; 918 PL_dirty = 0;
843 PL_restartop = 0; 919 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 920#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 921 PL_parser = 0;
846#endif 922#endif
923 PL_hints = 0;
847 924
848 /* recreate the die/warn hooks */ 925 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 926 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); 927 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 928
852 GvSV (PL_defgv) = newSV (0); 929 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 930 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 931 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 932 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
933 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 934 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 935 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 936
859 { 937 {
860 dSP; 938 dSP;
861 UNOP myop; 939 UNOP myop;
862 940
863 Zero (&myop, 1, UNOP); 941 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 942 myop.op_next = Nullop;
943 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 944 myop.op_flags = OPf_WANT_VOID;
866 945
867 PUSHMARK (SP); 946 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 947 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 948 PUTBACK;
870 PL_op = (OP *)&myop; 949 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 950 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 951 }
874 952
875 /* this newly created coroutine might be run on an existing cctx which most 953 /* 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. 954 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 955 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 956 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 */ 957 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880}
881 958
959 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
960 coro_setup_op.op_next = PL_op;
961 coro_setup_op.op_type = OP_ENTERSUB;
962 coro_setup_op.op_ppaddr = pp_slf;
963 /* no flags etc. required, as an init function won't be called */
964
965 PL_op = (OP *)&coro_setup_op;
966
967 /* copy throw, in case it was set before coro_setup */
968 CORO_THROW = coro->except;
969}
970
882static void 971static void
883coro_destruct (pTHX_ struct coro *coro) 972coro_unwind_stacks (pTHX)
884{ 973{
885 if (!IN_DESTRUCT) 974 if (!IN_DESTRUCT)
886 { 975 {
887 /* restore all saved variables and stuff */ 976 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 977 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 985 POPSTACK_TO (PL_mainstack);
897 986
898 /* unwind main stack */ 987 /* unwind main stack */
899 dounwind (-1); 988 dounwind (-1);
900 } 989 }
990}
991
992static void
993coro_destruct_perl (pTHX_ struct coro *coro)
994{
995 coro_unwind_stacks (aTHX);
901 996
902 SvREFCNT_dec (GvSV (PL_defgv)); 997 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 998 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 999 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 1000 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 1001 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 1002 SvREFCNT_dec (GvSV (irsgv));
1003 SvREFCNT_dec (GvHV (PL_hintgv));
908 1004
909 SvREFCNT_dec (PL_diehook); 1005 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 1006 SvREFCNT_dec (PL_warnhook);
911 1007
912 SvREFCNT_dec (coro->saved_deffh); 1008 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1009 SvREFCNT_dec (coro->rouse_cb);
1010 SvREFCNT_dec (coro->invoke_cb);
1011 SvREFCNT_dec (coro->invoke_av);
914 1012
915 coro_destruct_stacks (aTHX); 1013 coro_destruct_stacks (aTHX);
916} 1014}
917 1015
918INLINE void 1016INLINE void
… …
928static int 1026static int
929runops_trace (pTHX) 1027runops_trace (pTHX)
930{ 1028{
931 COP *oldcop = 0; 1029 COP *oldcop = 0;
932 int oldcxix = -2; 1030 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1031
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1032 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1033 {
938 PERL_ASYNC_CHECK (); 1034 PERL_ASYNC_CHECK ();
939 1035
940 if (cctx->flags & CC_TRACE_ALL) 1036 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1037 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1038 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1039 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1040 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1041 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1042 AV *av = newAV (); /* return values */
947 SV **cb; 1043 SV **cb;
… …
984 1080
985 if (PL_curcop != &PL_compiling) 1081 if (PL_curcop != &PL_compiling)
986 { 1082 {
987 SV **cb; 1083 SV **cb;
988 1084
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1085 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1086 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1087 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1088
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1089 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1090 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1091 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1092 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1093 SV *fullname = sv_2mortal (newSV (0));
999 1094
1000 if (isGV (gv)) 1095 if (isGV (gv))
… …
1005 SAVETMPS; 1100 SAVETMPS;
1006 EXTEND (SP, 3); 1101 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1102 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1103 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1104 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1105 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1106 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1107 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); 1108 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1109 SPAGAIN;
1015 FREETMPS; 1110 FREETMPS;
… …
1018 } 1113 }
1019 1114
1020 oldcxix = cxstack_ix; 1115 oldcxix = cxstack_ix;
1021 } 1116 }
1022 1117
1023 if (cctx->flags & CC_TRACE_LINE) 1118 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1119 {
1025 dSP; 1120 dSP;
1026 1121
1027 PL_runops = RUNOPS_DEFAULT; 1122 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1123 ENTER;
… …
1047 1142
1048 TAINT_NOT; 1143 TAINT_NOT;
1049 return 0; 1144 return 0;
1050} 1145}
1051 1146
1147static struct CoroSLF cctx_ssl_frame;
1148
1052static void 1149static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1150slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1151{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1152 ta->prev = 0;
1057} 1153}
1058 1154
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1155static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1156slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1157{
1062/* also initialises PL_top_env */ 1158 *frame = cctx_ssl_frame;
1159
1160 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1161}
1162
1163/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1164static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1165cctx_prepare (pTHX)
1065{ 1166{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1167 PL_top_env = &PL_start_env;
1070 1168
1071 if (cctx->flags & CC_TRACE) 1169 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1170 PL_runops = runops_trace;
1073 1171
1074 Zero (&myop, 1, UNOP); 1172 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1173 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1174 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1175 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1176
1078 PUSHMARK (SP); 1177 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1178 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1179
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1180 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1181 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1182}
1087 1183
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1184/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1185INLINE void
1090transfer_tail (pTHX) 1186transfer_tail (pTHX)
1091{ 1187{
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); 1188 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} 1189}
1107 1190
1108/* 1191/*
1109 * this is a _very_ stripped down perl interpreter ;) 1192 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1193 */
… …
1122 /* normally we would need to skip the entersub here */ 1205 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1206 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1207 /* PL_nop = PL_nop->op_next */
1125 1208
1126 /* inject a fake subroutine call to cctx_init */ 1209 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1210 cctx_prepare (aTHX);
1128 1211
1129 /* cctx_run is the alternative tail of transfer() */ 1212 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1213 transfer_tail (aTHX);
1132 1214
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1215 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1216 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1217 perl_run (PL_curinterp);
1218 /*
1219 * Unfortunately, there is no way to get at the return values of the
1220 * coro body here, as perl_run destroys these
1221 */
1136 1222
1137 /* 1223 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1224 * 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) 1225 * 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 1226 * 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" 1227 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * coroutine as Coro has no such concept 1228 * coroutine as Coro has no such concept.
1229 * This actually isn't valid with the pthread backend, but OSes requiring
1230 * that backend are too broken to do it in a standards-compliant way.
1143 */ 1231 */
1144 PL_top_env = main_top_env; 1232 PL_top_env = main_top_env;
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1233 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1234 }
1147} 1235}
… …
1224cctx_destroy (coro_cctx *cctx) 1312cctx_destroy (coro_cctx *cctx)
1225{ 1313{
1226 if (!cctx) 1314 if (!cctx)
1227 return; 1315 return;
1228 1316
1317 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1318
1229 --cctx_count; 1319 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1320 coro_destroy (&cctx->cctx);
1231 1321
1232 /* coro_transfer creates new, empty cctx's */ 1322 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1323 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1381/** coroutine switching *****************************************************/
1292 1382
1293static void 1383static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1384transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1385{
1386 /* TODO: throwing up here is considered harmful */
1387
1296 if (expect_true (prev != next)) 1388 if (expect_true (prev != next))
1297 { 1389 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1390 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,"); 1391 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1392
1301 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,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED)) 1393 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1394 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1395
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1396#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1397 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1398 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1399#endif
1311 } 1400 }
1312} 1401}
1313 1402
1314/* always use the TRANSFER macro */ 1403/* always use the TRANSFER macro */
1315static void NOINLINE 1404static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1405transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1406{
1318 dSTACKLEVEL; 1407 dSTACKLEVEL;
1319 1408
1320 /* sometimes transfer is only called to set idle_sp */ 1409 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1410 if (expect_false (!prev))
1322 { 1411 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1412 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1413 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1414 }
1326 else if (expect_true (prev != next)) 1415 else if (expect_true (prev != next))
1327 { 1416 {
1328 coro_cctx *prev__cctx; 1417 coro_cctx *cctx_prev;
1329 1418
1330 if (expect_false (prev->flags & CF_NEW)) 1419 if (expect_false (prev->flags & CF_NEW))
1331 { 1420 {
1332 /* create a new empty/source context */ 1421 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1422 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1423 prev->flags |= CF_RUNNING;
1336 } 1424 }
1337 1425
1338 prev->flags &= ~CF_RUNNING; 1426 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1437 coro_setup (aTHX_ next);
1350 } 1438 }
1351 else 1439 else
1352 load_perl (aTHX_ next); 1440 load_perl (aTHX_ next);
1353 1441
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1442 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1443 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1444 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1445 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1446 && !force_cctx
1361 )) 1447 ))
1362 { 1448 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1449 /* 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)); 1450 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1451
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 */ 1452 /* 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 */ 1453 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1454 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1455 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1456 next->cctx = cctx_get (aTHX);
1373 1457
1374 cctx_put (prev__cctx); 1458 cctx_put (cctx_current);
1375 } 1459 }
1460 else
1461 prev->cctx = cctx_current;
1376 1462
1377 ++next->usecount; 1463 ++next->usecount;
1378 1464
1379 if (expect_true (!next->cctx)) 1465 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1466 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1467
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1468 next->cctx = 0;
1383 transfer_next = next;
1384 1469
1385 if (expect_false (prev__cctx != next->cctx)) 1470 if (expect_false (cctx_prev != cctx_current))
1386 { 1471 {
1387 prev__cctx->top_env = PL_top_env; 1472 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1473 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1474 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1475 }
1391 1476
1392 transfer_tail (aTHX); 1477 transfer_tail (aTHX);
1393 } 1478 }
1394} 1479}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1487coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1488{
1404 if (coro->flags & CF_DESTROYED) 1489 if (coro->flags & CF_DESTROYED)
1405 return 0; 1490 return 0;
1406 1491
1407 if (coro->on_destroy) 1492 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1493 coro->on_destroy (aTHX_ coro);
1409 1494
1410 coro->flags |= CF_DESTROYED; 1495 coro->flags |= CF_DESTROYED;
1411 1496
1412 if (coro->flags & CF_READY) 1497 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1501 --coro_nready;
1417 } 1502 }
1418 else 1503 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1504 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1505
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1506 if (coro->mainstack
1507 && coro->mainstack != main_mainstack
1508 && coro->slot
1509 && !PL_dirty)
1422 { 1510 {
1423 struct coro temp; 1511 struct coro *current = SvSTATE_current;
1424 1512
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1513 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1426 1514
1427 save_perl (aTHX_ &temp); 1515 save_perl (aTHX_ current);
1428 load_perl (aTHX_ coro); 1516 load_perl (aTHX_ coro);
1429 1517
1430 coro_destruct (aTHX_ coro); 1518 coro_destruct_perl (aTHX_ coro);
1431 1519
1432 load_perl (aTHX_ &temp); 1520 load_perl (aTHX_ current);
1433 1521
1434 coro->slot = 0; 1522 coro->slot = 0;
1435 } 1523 }
1436 1524
1437 cctx_destroy (coro->cctx); 1525 cctx_destroy (coro->cctx);
1526 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1527 SvREFCNT_dec (coro->args);
1528 SvREFCNT_dec (CORO_THROW);
1439 1529
1440 if (coro->next) coro->next->prev = coro->prev; 1530 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1531 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1532 if (coro == coro_first) coro_first = coro->next;
1443 1533
… …
1497 1587
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1588 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1589 TRANSFER (ta, 1);
1500} 1590}
1501 1591
1592/*****************************************************************************/
1593/* gensub: simple closure generation utility */
1594
1595#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1596
1597/* create a closure from XS, returns a code reference */
1598/* the arg can be accessed via GENSUB_ARG from the callback */
1599/* the callback must use dXSARGS/XSRETURN */
1600static SV *
1601gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1602{
1603 CV *cv = (CV *)newSV (0);
1604
1605 sv_upgrade ((SV *)cv, SVt_PVCV);
1606
1607 CvANON_on (cv);
1608 CvISXSUB_on (cv);
1609 CvXSUB (cv) = xsub;
1610 GENSUB_ARG = arg;
1611
1612 return newRV_noinc ((SV *)cv);
1613}
1614
1502/** Coro ********************************************************************/ 1615/** Coro ********************************************************************/
1503 1616
1504INLINE void 1617INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1618coro_enq (pTHX_ struct coro *coro)
1506{ 1619{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1620 struct coro **ready = coro_ready [coro->prio - PRIO_MIN];
1508}
1509 1621
1510INLINE SV * 1622 SvREFCNT_inc_NN (coro->hv);
1623
1624 coro->next_ready = 0;
1625 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1626 ready [1] = coro;
1627}
1628
1629INLINE struct coro *
1511coro_deq (pTHX) 1630coro_deq (pTHX)
1512{ 1631{
1513 int prio; 1632 int prio;
1514 1633
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1634 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1635 {
1517 return av_shift (coro_ready [prio]); 1636 struct coro **ready = coro_ready [prio];
1637
1638 if (ready [0])
1639 {
1640 struct coro *coro = ready [0];
1641 ready [0] = coro->next_ready;
1642 return coro;
1643 }
1644 }
1518 1645
1519 return 0; 1646 return 0;
1520} 1647}
1521 1648
1522static int 1649static int
… …
1524{ 1651{
1525 struct coro *coro; 1652 struct coro *coro;
1526 SV *sv_hook; 1653 SV *sv_hook;
1527 void (*xs_hook)(void); 1654 void (*xs_hook)(void);
1528 1655
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1656 coro = SvSTATE (coro_sv);
1533 1657
1534 if (coro->flags & CF_READY) 1658 if (coro->flags & CF_READY)
1535 return 0; 1659 return 0;
1536 1660
… …
1549 ENTER; 1673 ENTER;
1550 SAVETMPS; 1674 SAVETMPS;
1551 1675
1552 PUSHMARK (SP); 1676 PUSHMARK (SP);
1553 PUTBACK; 1677 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1678 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1679
1557 FREETMPS; 1680 FREETMPS;
1558 LEAVE; 1681 LEAVE;
1559 } 1682 }
1560 1683
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1691api_is_ready (pTHX_ SV *coro_sv)
1569{ 1692{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1693 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1694}
1572 1695
1696/* expects to own a reference to next->hv */
1573INLINE void 1697INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1698prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1699{
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); 1700 SV *prev_sv = SvRV (coro_current);
1701
1616 ta->prev = SvSTATE_hv (prev_sv); 1702 ta->prev = SvSTATE_hv (prev_sv);
1703 ta->next = next;
1704
1617 TRANSFER_CHECK (*ta); 1705 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1706
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1707 SvRV_set (coro_current, (SV *)next->hv);
1621 1708
1622 free_coro_mortal (aTHX); 1709 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1710 coro_mortal = prev_sv;
1624} 1711}
1625 1712
1713static void
1714prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1715{
1716 for (;;)
1717 {
1718 struct coro *next = coro_deq (aTHX);
1719
1720 if (expect_true (next))
1721 {
1722 /* cannot transfer to destroyed coros, skip and look for next */
1723 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1724 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1725 else
1726 {
1727 next->flags &= ~CF_READY;
1728 --coro_nready;
1729
1730 prepare_schedule_to (aTHX_ ta, next);
1731 break;
1732 }
1733 }
1734 else
1735 {
1736 /* nothing to schedule: call the idle handler */
1737 if (SvROK (sv_idle)
1738 && SvOBJECT (SvRV (sv_idle)))
1739 {
1740 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1741 api_ready (aTHX_ SvRV (sv_idle));
1742 --coro_nready;
1743 }
1744 else
1745 {
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (sv_idle, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1757 }
1758 }
1759 }
1760}
1761
1626INLINE void 1762INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1763prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1764{
1629 api_ready (aTHX_ coro_current); 1765 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1766 prepare_schedule (aTHX_ ta);
… …
1649{ 1785{
1650 struct coro_transfer_args ta; 1786 struct coro_transfer_args ta;
1651 1787
1652 prepare_schedule (aTHX_ &ta); 1788 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 1789 TRANSFER (ta, 1);
1790}
1791
1792static void
1793api_schedule_to (pTHX_ SV *coro_sv)
1794{
1795 struct coro_transfer_args ta;
1796 struct coro *next = SvSTATE (coro_sv);
1797
1798 SvREFCNT_inc_NN (coro_sv);
1799 prepare_schedule_to (aTHX_ &ta, next);
1654} 1800}
1655 1801
1656static int 1802static int
1657api_cede (pTHX) 1803api_cede (pTHX)
1658{ 1804{
… …
1687static void 1833static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1834api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1835{
1690 struct coro *coro = SvSTATE (coro_sv); 1836 struct coro *coro = SvSTATE (coro_sv);
1691 1837
1838 if (coro->flags & CF_RUNNING)
1839 croak ("cannot enable tracing on a running coroutine, caught");
1840
1692 if (flags & CC_TRACE) 1841 if (flags & CC_TRACE)
1693 { 1842 {
1694 if (!coro->cctx) 1843 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1844 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1845 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1846 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1847
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1848 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1849 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1850 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1851 {
… …
1705 if (coro->flags & CF_RUNNING) 1854 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1855 PL_runops = RUNOPS_DEFAULT;
1707 else 1856 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1857 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 1858 }
1859}
1860
1861static void
1862coro_call_on_destroy (pTHX_ struct coro *coro)
1863{
1864 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1865 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1866
1867 if (on_destroyp)
1868 {
1869 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1870
1871 while (AvFILLp (on_destroy) >= 0)
1872 {
1873 dSP; /* don't disturb outer sp */
1874 SV *cb = av_pop (on_destroy);
1875
1876 PUSHMARK (SP);
1877
1878 if (statusp)
1879 {
1880 int i;
1881 AV *status = (AV *)SvRV (*statusp);
1882 EXTEND (SP, AvFILLp (status) + 1);
1883
1884 for (i = 0; i <= AvFILLp (status); ++i)
1885 PUSHs (AvARRAY (status)[i]);
1886 }
1887
1888 PUTBACK;
1889 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1890 }
1891 }
1892}
1893
1894static void
1895slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 int i;
1898 HV *hv = (HV *)SvRV (coro_current);
1899 AV *av = newAV ();
1900
1901 av_extend (av, items - 1);
1902 for (i = 0; i < items; ++i)
1903 av_push (av, SvREFCNT_inc_NN (arg [i]));
1904
1905 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1906
1907 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1908 api_ready (aTHX_ sv_manager);
1909
1910 frame->prepare = prepare_schedule;
1911 frame->check = slf_check_repeat;
1912
1913 /* as a minor optimisation, we could unwind all stacks here */
1914 /* but that puts extra pressure on pp_slf, and is not worth much */
1915 /*coro_unwind_stacks (aTHX);*/
1916}
1917
1918/*****************************************************************************/
1919/* async pool handler */
1920
1921static int
1922slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1923{
1924 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = (struct coro *)frame->data;
1926
1927 if (!coro->invoke_cb)
1928 return 1; /* loop till we have invoke */
1929 else
1930 {
1931 hv_store (hv, "desc", sizeof ("desc") - 1,
1932 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1933
1934 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1935
1936 {
1937 dSP;
1938 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1939 PUTBACK;
1940 }
1941
1942 SvREFCNT_dec (GvAV (PL_defgv));
1943 GvAV (PL_defgv) = coro->invoke_av;
1944 coro->invoke_av = 0;
1945
1946 return 0;
1947 }
1948}
1949
1950static void
1951slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1952{
1953 HV *hv = (HV *)SvRV (coro_current);
1954 struct coro *coro = SvSTATE_hv ((SV *)hv);
1955
1956 if (expect_true (coro->saved_deffh))
1957 {
1958 /* subsequent iteration */
1959 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1960 coro->saved_deffh = 0;
1961
1962 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1963 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1964 {
1965 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1966 coro->invoke_av = newAV ();
1967
1968 frame->prepare = prepare_nop;
1969 }
1970 else
1971 {
1972 av_clear (GvAV (PL_defgv));
1973 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1974
1975 coro->prio = 0;
1976
1977 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1978 api_trace (aTHX_ coro_current, 0);
1979
1980 frame->prepare = prepare_schedule;
1981 av_push (av_async_pool, SvREFCNT_inc (hv));
1982 }
1983 }
1984 else
1985 {
1986 /* first iteration, simply fall through */
1987 frame->prepare = prepare_nop;
1988 }
1989
1990 frame->check = slf_check_pool_handler;
1991 frame->data = (void *)coro;
1992}
1993
1994/*****************************************************************************/
1995/* rouse callback */
1996
1997#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1998
1999static void
2000coro_rouse_callback (pTHX_ CV *cv)
2001{
2002 dXSARGS;
2003 SV *data = (SV *)GENSUB_ARG;
2004
2005 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2006 {
2007 /* first call, set args */
2008 SV *coro = SvRV (data);
2009 AV *av = newAV ();
2010
2011 SvRV_set (data, (SV *)av);
2012
2013 /* better take a full copy of the arguments */
2014 while (items--)
2015 av_store (av, items, newSVsv (ST (items)));
2016
2017 api_ready (aTHX_ coro);
2018 SvREFCNT_dec (coro);
2019 }
2020
2021 XSRETURN_EMPTY;
2022}
2023
2024static int
2025slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2026{
2027 SV *data = (SV *)frame->data;
2028
2029 if (CORO_THROW)
2030 return 0;
2031
2032 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2033 return 1;
2034
2035 /* now push all results on the stack */
2036 {
2037 dSP;
2038 AV *av = (AV *)SvRV (data);
2039 int i;
2040
2041 EXTEND (SP, AvFILLp (av) + 1);
2042 for (i = 0; i <= AvFILLp (av); ++i)
2043 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2044
2045 /* we have stolen the elements, so set length to zero and free */
2046 AvFILLp (av) = -1;
2047 av_undef (av);
2048
2049 PUTBACK;
2050 }
2051
2052 return 0;
2053}
2054
2055static void
2056slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2057{
2058 SV *cb;
2059
2060 if (items)
2061 cb = arg [0];
2062 else
2063 {
2064 struct coro *coro = SvSTATE_current;
2065
2066 if (!coro->rouse_cb)
2067 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2068
2069 cb = sv_2mortal (coro->rouse_cb);
2070 coro->rouse_cb = 0;
2071 }
2072
2073 if (!SvROK (cb)
2074 || SvTYPE (SvRV (cb)) != SVt_PVCV
2075 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2076 croak ("Coro::rouse_wait called with illegal callback argument,");
2077
2078 {
2079 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2080 SV *data = (SV *)GENSUB_ARG;
2081
2082 frame->data = (void *)data;
2083 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2084 frame->check = slf_check_rouse_wait;
2085 }
2086}
2087
2088static SV *
2089coro_new_rouse_cb (pTHX)
2090{
2091 HV *hv = (HV *)SvRV (coro_current);
2092 struct coro *coro = SvSTATE_hv (hv);
2093 SV *data = newRV_inc ((SV *)hv);
2094 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2095
2096 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2097 SvREFCNT_dec (data); /* magicext increases the refcount */
2098
2099 SvREFCNT_dec (coro->rouse_cb);
2100 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2101
2102 return cb;
2103}
2104
2105/*****************************************************************************/
2106/* schedule-like-function opcode (SLF) */
2107
2108static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2109static const CV *slf_cv;
2110static SV **slf_argv;
2111static int slf_argc, slf_arga; /* count, allocated */
2112static I32 slf_ax; /* top of stack, for restore */
2113
2114/* this restores the stack in the case we patched the entersub, to */
2115/* recreate the stack frame as perl will on following calls */
2116/* since entersub cleared the stack */
2117static OP *
2118pp_restore (pTHX)
2119{
2120 int i;
2121 SV **SP = PL_stack_base + slf_ax;
2122
2123 PUSHMARK (SP);
2124
2125 EXTEND (SP, slf_argc + 1);
2126
2127 for (i = 0; i < slf_argc; ++i)
2128 PUSHs (sv_2mortal (slf_argv [i]));
2129
2130 PUSHs ((SV *)CvGV (slf_cv));
2131
2132 RETURNOP (slf_restore.op_first);
2133}
2134
2135static void
2136slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2137{
2138 SV **arg = (SV **)slf_frame.data;
2139
2140 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2141}
2142
2143static void
2144slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2145{
2146 if (items != 2)
2147 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2148
2149 frame->prepare = slf_prepare_transfer;
2150 frame->check = slf_check_nop;
2151 frame->data = (void *)arg; /* let's hope it will stay valid */
2152}
2153
2154static void
2155slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 frame->prepare = prepare_schedule;
2158 frame->check = slf_check_nop;
2159}
2160
2161static void
2162slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2163{
2164 struct coro *next = (struct coro *)slf_frame.data;
2165
2166 SvREFCNT_inc_NN (next->hv);
2167 prepare_schedule_to (aTHX_ ta, next);
2168}
2169
2170static void
2171slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2172{
2173 if (!items)
2174 croak ("Coro::schedule_to expects a coroutine argument, caught");
2175
2176 frame->data = (void *)SvSTATE (arg [0]);
2177 frame->prepare = slf_prepare_schedule_to;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2183{
2184 api_ready (aTHX_ SvRV (coro_current));
2185
2186 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2187}
2188
2189static void
2190slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2191{
2192 frame->prepare = prepare_cede;
2193 frame->check = slf_check_nop;
2194}
2195
2196static void
2197slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 frame->prepare = prepare_cede_notself;
2200 frame->check = slf_check_nop;
2201}
2202
2203/*
2204 * these not obviously related functions are all rolled into one
2205 * function to increase chances that they all will call transfer with the same
2206 * stack offset
2207 * SLF stands for "schedule-like-function".
2208 */
2209static OP *
2210pp_slf (pTHX)
2211{
2212 I32 checkmark; /* mark SP to see how many elements check has pushed */
2213
2214 /* set up the slf frame, unless it has already been set-up */
2215 /* the latter happens when a new coro has been started */
2216 /* or when a new cctx was attached to an existing coroutine */
2217 if (expect_true (!slf_frame.prepare))
2218 {
2219 /* first iteration */
2220 dSP;
2221 SV **arg = PL_stack_base + TOPMARK + 1;
2222 int items = SP - arg; /* args without function object */
2223 SV *gv = *sp;
2224
2225 /* do a quick consistency check on the "function" object, and if it isn't */
2226 /* for us, divert to the real entersub */
2227 if (SvTYPE (gv) != SVt_PVGV
2228 || !GvCV (gv)
2229 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2230 return PL_ppaddr[OP_ENTERSUB](aTHX);
2231
2232 if (!(PL_op->op_flags & OPf_STACKED))
2233 {
2234 /* ampersand-form of call, use @_ instead of stack */
2235 AV *av = GvAV (PL_defgv);
2236 arg = AvARRAY (av);
2237 items = AvFILLp (av) + 1;
2238 }
2239
2240 /* now call the init function, which needs to set up slf_frame */
2241 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2242 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2243
2244 /* pop args */
2245 SP = PL_stack_base + POPMARK;
2246
2247 PUTBACK;
2248 }
2249
2250 /* now that we have a slf_frame, interpret it! */
2251 /* we use a callback system not to make the code needlessly */
2252 /* complicated, but so we can run multiple perl coros from one cctx */
2253
2254 do
2255 {
2256 struct coro_transfer_args ta;
2257
2258 slf_frame.prepare (aTHX_ &ta);
2259 TRANSFER (ta, 0);
2260
2261 checkmark = PL_stack_sp - PL_stack_base;
2262 }
2263 while (slf_frame.check (aTHX_ &slf_frame));
2264
2265 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2266
2267 /* exception handling */
2268 if (expect_false (CORO_THROW))
2269 {
2270 SV *exception = sv_2mortal (CORO_THROW);
2271
2272 CORO_THROW = 0;
2273 sv_setsv (ERRSV, exception);
2274 croak (0);
2275 }
2276
2277 /* return value handling - mostly like entersub */
2278 /* make sure we put something on the stack in scalar context */
2279 if (GIMME_V == G_SCALAR)
2280 {
2281 dSP;
2282 SV **bot = PL_stack_base + checkmark;
2283
2284 if (sp == bot) /* too few, push undef */
2285 bot [1] = &PL_sv_undef;
2286 else if (sp != bot + 1) /* too many, take last one */
2287 bot [1] = *sp;
2288
2289 SP = bot + 1;
2290
2291 PUTBACK;
2292 }
2293
2294 return NORMAL;
2295}
2296
2297static void
2298api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2299{
2300 int i;
2301 SV **arg = PL_stack_base + ax;
2302 int items = PL_stack_sp - arg + 1;
2303
2304 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2305
2306 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2307 && PL_op->op_ppaddr != pp_slf)
2308 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2309
2310 CvFLAGS (cv) |= CVf_SLF;
2311 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2312 slf_cv = cv;
2313
2314 /* we patch the op, and then re-run the whole call */
2315 /* we have to put the same argument on the stack for this to work */
2316 /* and this will be done by pp_restore */
2317 slf_restore.op_next = (OP *)&slf_restore;
2318 slf_restore.op_type = OP_CUSTOM;
2319 slf_restore.op_ppaddr = pp_restore;
2320 slf_restore.op_first = PL_op;
2321
2322 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2323
2324 if (PL_op->op_flags & OPf_STACKED)
2325 {
2326 if (items > slf_arga)
2327 {
2328 slf_arga = items;
2329 free (slf_argv);
2330 slf_argv = malloc (slf_arga * sizeof (SV *));
2331 }
2332
2333 slf_argc = items;
2334
2335 for (i = 0; i < items; ++i)
2336 slf_argv [i] = SvREFCNT_inc (arg [i]);
2337 }
2338 else
2339 slf_argc = 0;
2340
2341 PL_op->op_ppaddr = pp_slf;
2342 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2343
2344 PL_op = (OP *)&slf_restore;
2345}
2346
2347/*****************************************************************************/
2348/* dynamic wind */
2349
2350static void
2351on_enterleave_call (pTHX_ SV *cb)
2352{
2353 dSP;
2354
2355 PUSHSTACK;
2356
2357 PUSHMARK (SP);
2358 PUTBACK;
2359 call_sv (cb, G_VOID | G_DISCARD);
2360 SPAGAIN;
2361
2362 POPSTACK;
2363}
2364
2365static SV *
2366coro_avp_pop_and_free (pTHX_ AV **avp)
2367{
2368 AV *av = *avp;
2369 SV *res = av_pop (av);
2370
2371 if (AvFILLp (av) < 0)
2372 {
2373 *avp = 0;
2374 SvREFCNT_dec (av);
2375 }
2376
2377 return res;
2378}
2379
2380static void
2381coro_pop_on_enter (pTHX_ void *coro)
2382{
2383 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2384 SvREFCNT_dec (cb);
2385}
2386
2387static void
2388coro_pop_on_leave (pTHX_ void *coro)
2389{
2390 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2391 on_enterleave_call (aTHX_ sv_2mortal (cb));
1710} 2392}
1711 2393
1712/*****************************************************************************/ 2394/*****************************************************************************/
1713/* PerlIO::cede */ 2395/* PerlIO::cede */
1714 2396
… …
1783 PerlIOBuf_get_cnt, 2465 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2466 PerlIOBuf_set_ptrcnt,
1785}; 2467};
1786 2468
1787/*****************************************************************************/ 2469/*****************************************************************************/
2470/* Coro::Semaphore & Coro::Signal */
1788 2471
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 * 2472static SV *
1800pp_restore (pTHX) 2473coro_waitarray_new (pTHX_ int count)
1801{ 2474{
1802 dSP; 2475 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2476 AV *av = newAV ();
2477 SV **ary;
1803 2478
1804 PUSHMARK (SP); 2479 /* unfortunately, building manually saves memory */
2480 Newx (ary, 2, SV *);
2481 AvALLOC (av) = ary;
2482#if PERL_VERSION_ATLEAST (5,10,0)
2483 AvARRAY (av) = ary;
2484#else
2485 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2486 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2487 SvPVX ((SV *)av) = (char *)ary;
2488#endif
2489 AvMAX (av) = 1;
2490 AvFILLp (av) = 0;
2491 ary [0] = newSViv (count);
1805 2492
1806 EXTEND (SP, 3); 2493 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} 2494}
1814 2495
1815static void 2496/* 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 2497
1821static void 2498static 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) 2499coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2500{
1994 SV *count_sv = AvARRAY (av)[0]; 2501 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2502 IV count = SvIVX (count_sv);
1996 2503
1997 count += adjust; 2504 count += adjust;
1998 SvIVX (count_sv) = count; 2505 SvIVX (count_sv) = count;
1999 2506
2000 /* now wake up as many waiters as possible */ 2507 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2508 while (count > 0 && AvFILLp (av) > 0)
2002 { 2509 {
2003 SV *cb; 2510 SV *cb;
2004 2511
2005 /* swap first two elements so we can shift a waiter */ 2512 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2513 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2514 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2515 cb = av_shift (av);
2009 2516
2010 if (SvOBJECT (cb)) 2517 if (SvOBJECT (cb))
2518 {
2011 api_ready (aTHX_ cb); 2519 api_ready (aTHX_ cb);
2012 else 2520 --count;
2013 croak ("callbacks not yet supported"); 2521 }
2522 else if (SvTYPE (cb) == SVt_PVCV)
2523 {
2524 dSP;
2525 PUSHMARK (SP);
2526 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2527 PUTBACK;
2528 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2529 }
2014 2530
2015 SvREFCNT_dec (cb); 2531 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2532 }
2019} 2533}
2020 2534
2021static void 2535static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2536coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{ 2537{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2538 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2539 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2540}
2027 2541
2028static int 2542static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2543slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2544{
2031 AV *av = (AV *)frame->data; 2545 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2546 SV *count_sv = AvARRAY (av)[0];
2033 2547
2548 /* if we are about to throw, don't actually acquire the lock, just throw */
2549 if (CORO_THROW)
2550 return 0;
2034 if (SvIVX (count_sv) > 0) 2551 else if (SvIVX (count_sv) > 0)
2035 { 2552 {
2036 SvSTATE_current->on_destroy = 0; 2553 SvSTATE_current->on_destroy = 0;
2554
2555 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2556 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2557 else
2558 coro_semaphore_adjust (aTHX_ av, 0);
2559
2038 return 0; 2560 return 0;
2039 } 2561 }
2040 else 2562 else
2041 { 2563 {
2042 int i; 2564 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2573 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2574 return 1;
2053 } 2575 }
2054} 2576}
2055 2577
2056static void 2578static int
2579slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2580{
2581 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2582}
2583
2584static int
2585slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2586{
2587 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2588}
2589
2590static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2591slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2592{
2059 AV *av = (AV *)SvRV (arg [0]); 2593 AV *av = (AV *)SvRV (arg [0]);
2060 2594
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2595 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2596 {
… …
2072 2606
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2607 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2608 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2609 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 } 2610 }
2611}
2077 2612
2613static void
2614slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2615{
2616 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078 frame->check = slf_check_semaphore_down; 2617 frame->check = slf_check_semaphore_down;
2618}
2079 2619
2620static void
2621slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2622{
2623 if (items >= 2)
2624 {
2625 /* callback form */
2626 AV *av = (AV *)SvRV (arg [0]);
2627 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2628
2629 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2630
2631 if (SvIVX (AvARRAY (av)[0]) > 0)
2632 coro_semaphore_adjust (aTHX_ av, 0);
2633
2634 frame->prepare = prepare_nop;
2635 frame->check = slf_check_nop;
2636 }
2637 else
2638 {
2639 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2640 frame->check = slf_check_semaphore_wait;
2641 }
2642}
2643
2644/* signal */
2645
2646static void
2647coro_signal_wake (pTHX_ AV *av, int count)
2648{
2649 SvIVX (AvARRAY (av)[0]) = 0;
2650
2651 /* now signal count waiters */
2652 while (count > 0 && AvFILLp (av) > 0)
2653 {
2654 SV *cb;
2655
2656 /* swap first two elements so we can shift a waiter */
2657 cb = AvARRAY (av)[0];
2658 AvARRAY (av)[0] = AvARRAY (av)[1];
2659 AvARRAY (av)[1] = cb;
2660
2661 cb = av_shift (av);
2662
2663 api_ready (aTHX_ cb);
2664 sv_setiv (cb, 0); /* signal waiter */
2665 SvREFCNT_dec (cb);
2666
2667 --count;
2668 }
2669}
2670
2671static int
2672slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2673{
2674 /* if we are about to throw, also stop waiting */
2675 return SvROK ((SV *)frame->data) && !CORO_THROW;
2676}
2677
2678static void
2679slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2680{
2681 AV *av = (AV *)SvRV (arg [0]);
2682
2683 if (SvIVX (AvARRAY (av)[0]))
2684 {
2685 SvIVX (AvARRAY (av)[0]) = 0;
2686 frame->prepare = prepare_nop;
2687 frame->check = slf_check_nop;
2688 }
2689 else
2690 {
2691 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2692
2693 av_push (av, waiter);
2694
2695 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2696 frame->prepare = prepare_schedule;
2697 frame->check = slf_check_signal_wait;
2698 }
2080} 2699}
2081 2700
2082/*****************************************************************************/ 2701/*****************************************************************************/
2702/* Coro::AIO */
2083 2703
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2704#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 2705
2086/* create a closure from XS, returns a code reference */ 2706/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 2707struct io_state
2088/* the callback must use dXSARGS/XSRETURN */
2089static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091{ 2708{
2092 CV *cv = (CV *)NEWSV (0, 0); 2709 int errorno;
2710 I32 laststype; /* U16 in 5.10.0 */
2711 int laststatval;
2712 Stat_t statcache;
2713};
2093 2714
2715static void
2716coro_aio_callback (pTHX_ CV *cv)
2717{
2718 dXSARGS;
2719 AV *state = (AV *)GENSUB_ARG;
2720 SV *coro = av_pop (state);
2721 SV *data_sv = newSV (sizeof (struct io_state));
2722
2723 av_extend (state, items - 1);
2724
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 2725 sv_upgrade (data_sv, SVt_PV);
2726 SvCUR_set (data_sv, sizeof (struct io_state));
2727 SvPOK_only (data_sv);
2095 2728
2096 CvANON_on (cv); 2729 {
2097 CvISXSUB_on (cv); 2730 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2098 CvXSUB (cv) = xsub;
2099 GENSUB_ARG = arg;
2100 2731
2101 return newRV_noinc ((SV *)cv); 2732 data->errorno = errno;
2733 data->laststype = PL_laststype;
2734 data->laststatval = PL_laststatval;
2735 data->statcache = PL_statcache;
2736 }
2737
2738 /* now build the result vector out of all the parameters and the data_sv */
2739 {
2740 int i;
2741
2742 for (i = 0; i < items; ++i)
2743 av_push (state, SvREFCNT_inc_NN (ST (i)));
2744 }
2745
2746 av_push (state, data_sv);
2747
2748 api_ready (aTHX_ coro);
2749 SvREFCNT_dec (coro);
2750 SvREFCNT_dec ((AV *)state);
2751}
2752
2753static int
2754slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2755{
2756 AV *state = (AV *)frame->data;
2757
2758 /* if we are about to throw, return early */
2759 /* this does not cancel the aio request, but at least */
2760 /* it quickly returns */
2761 if (CORO_THROW)
2762 return 0;
2763
2764 /* one element that is an RV? repeat! */
2765 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2766 return 1;
2767
2768 /* restore status */
2769 {
2770 SV *data_sv = av_pop (state);
2771 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2772
2773 errno = data->errorno;
2774 PL_laststype = data->laststype;
2775 PL_laststatval = data->laststatval;
2776 PL_statcache = data->statcache;
2777
2778 SvREFCNT_dec (data_sv);
2779 }
2780
2781 /* push result values */
2782 {
2783 dSP;
2784 int i;
2785
2786 EXTEND (SP, AvFILLp (state) + 1);
2787 for (i = 0; i <= AvFILLp (state); ++i)
2788 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2789
2790 PUTBACK;
2791 }
2792
2793 return 0;
2794}
2795
2796static void
2797slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2798{
2799 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2800 SV *coro_hv = SvRV (coro_current);
2801 struct coro *coro = SvSTATE_hv (coro_hv);
2802
2803 /* put our coroutine id on the state arg */
2804 av_push (state, SvREFCNT_inc_NN (coro_hv));
2805
2806 /* first see whether we have a non-zero priority and set it as AIO prio */
2807 if (coro->prio)
2808 {
2809 dSP;
2810
2811 static SV *prio_cv;
2812 static SV *prio_sv;
2813
2814 if (expect_false (!prio_cv))
2815 {
2816 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2817 prio_sv = newSViv (0);
2818 }
2819
2820 PUSHMARK (SP);
2821 sv_setiv (prio_sv, coro->prio);
2822 XPUSHs (prio_sv);
2823
2824 PUTBACK;
2825 call_sv (prio_cv, G_VOID | G_DISCARD);
2826 }
2827
2828 /* now call the original request */
2829 {
2830 dSP;
2831 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2832 int i;
2833
2834 PUSHMARK (SP);
2835
2836 /* first push all args to the stack */
2837 EXTEND (SP, items + 1);
2838
2839 for (i = 0; i < items; ++i)
2840 PUSHs (arg [i]);
2841
2842 /* now push the callback closure */
2843 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2844
2845 /* now call the AIO function - we assume our request is uncancelable */
2846 PUTBACK;
2847 call_sv ((SV *)req, G_VOID | G_DISCARD);
2848 }
2849
2850 /* now that the requets is going, we loop toll we have a result */
2851 frame->data = (void *)state;
2852 frame->prepare = prepare_schedule;
2853 frame->check = slf_check_aio_req;
2854}
2855
2856static void
2857coro_aio_req_xs (pTHX_ CV *cv)
2858{
2859 dXSARGS;
2860
2861 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2862
2863 XSRETURN_EMPTY;
2102} 2864}
2103 2865
2104/*****************************************************************************/ 2866/*****************************************************************************/
2867
2868#if CORO_CLONE
2869# include "clone.c"
2870#endif
2105 2871
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2872MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 2873
2108PROTOTYPES: DISABLE 2874PROTOTYPES: DISABLE
2109 2875
… …
2114 coro_thx = PERL_GET_CONTEXT; 2880 coro_thx = PERL_GET_CONTEXT;
2115# endif 2881# endif
2116#endif 2882#endif
2117 BOOT_PAGESIZE; 2883 BOOT_PAGESIZE;
2118 2884
2885 cctx_current = cctx_new_empty ();
2886
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2887 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2888 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 2889
2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2890 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; 2891 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2142 2910
2143 { 2911 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2912 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 2913
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2914 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 2915 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 2916
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2917 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 2918 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 2919 }
2154 2920
2155 coroapi.ver = CORO_API_VERSION; 2921 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 2922 coroapi.rev = CORO_API_REVISION;
2157 2923
… …
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2942 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2177} 2943}
2178 2944
2179SV * 2945SV *
2180new (char *klass, ...) 2946new (char *klass, ...)
2947 ALIAS:
2948 Coro::new = 1
2181 CODE: 2949 CODE:
2182{ 2950{
2183 struct coro *coro; 2951 struct coro *coro;
2184 MAGIC *mg; 2952 MAGIC *mg;
2185 HV *hv; 2953 HV *hv;
2954 CV *cb;
2186 int i; 2955 int i;
2956
2957 if (items > 1)
2958 {
2959 cb = coro_sv_2cv (aTHX_ ST (1));
2960
2961 if (!ix)
2962 {
2963 if (CvISXSUB (cb))
2964 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2965
2966 if (!CvROOT (cb))
2967 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2968 }
2969 }
2187 2970
2188 Newz (0, coro, 1, struct coro); 2971 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV (); 2972 coro->args = newAV ();
2190 coro->flags = CF_NEW; 2973 coro->flags = CF_NEW;
2191 2974
… …
2196 coro->hv = hv = newHV (); 2979 coro->hv = hv = newHV ();
2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2980 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP; 2981 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2982 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200 2983
2984 if (items > 1)
2985 {
2201 av_extend (coro->args, items - 1); 2986 av_extend (coro->args, items - 1 + ix - 1);
2987
2988 if (ix)
2989 {
2990 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2991 cb = cv_coro_run;
2992 }
2993
2994 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2995
2202 for (i = 1; i < items; i++) 2996 for (i = 2; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i))); 2997 av_push (coro->args, newSVsv (ST (i)));
2998 }
2204} 2999}
2205 OUTPUT: 3000 OUTPUT:
2206 RETVAL 3001 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 3002
2213void 3003void
2214transfer (...) 3004transfer (...)
2215 PROTOTYPE: $$ 3005 PROTOTYPE: $$
2216 CODE: 3006 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3007 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 3008
2219bool 3009bool
2220_destroy (SV *coro_sv) 3010_destroy (SV *coro_sv)
2221 CODE: 3011 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3012 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2226void 3016void
2227_exit (int code) 3017_exit (int code)
2228 PROTOTYPE: $ 3018 PROTOTYPE: $
2229 CODE: 3019 CODE:
2230 _exit (code); 3020 _exit (code);
3021
3022SV *
3023clone (Coro::State coro)
3024 CODE:
3025{
3026#if CORO_CLONE
3027 struct coro *ncoro = coro_clone (aTHX_ coro);
3028 MAGIC *mg;
3029 /* TODO: too much duplication */
3030 ncoro->hv = newHV ();
3031 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3032 mg->mg_flags |= MGf_DUP;
3033 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3034#else
3035 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3036#endif
3037}
3038 OUTPUT:
3039 RETVAL
2231 3040
2232int 3041int
2233cctx_stacksize (int new_stacksize = 0) 3042cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 3043 PROTOTYPE: ;$
2235 CODE: 3044 CODE:
… …
2285 eval = 1 3094 eval = 1
2286 CODE: 3095 CODE:
2287{ 3096{
2288 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3097 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2289 { 3098 {
2290 struct coro temp; 3099 struct coro *current = SvSTATE_current;
2291 3100
2292 if (!(coro->flags & CF_RUNNING)) 3101 if (current != coro)
2293 { 3102 {
2294 PUTBACK; 3103 PUTBACK;
2295 save_perl (aTHX_ &temp); 3104 save_perl (aTHX_ current);
2296 load_perl (aTHX_ coro); 3105 load_perl (aTHX_ coro);
3106 SPAGAIN;
2297 } 3107 }
2298 3108
2299 {
2300 dSP;
2301 ENTER;
2302 SAVETMPS;
2303 PUTBACK;
2304 PUSHSTACK; 3109 PUSHSTACK;
3110
2305 PUSHMARK (SP); 3111 PUSHMARK (SP);
3112 PUTBACK;
2306 3113
2307 if (ix) 3114 if (ix)
2308 eval_sv (coderef, 0); 3115 eval_sv (coderef, 0);
2309 else 3116 else
2310 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3117 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2311 3118
2312 POPSTACK; 3119 POPSTACK;
2313 SPAGAIN; 3120 SPAGAIN;
2314 FREETMPS;
2315 LEAVE;
2316 PUTBACK;
2317 }
2318 3121
2319 if (!(coro->flags & CF_RUNNING)) 3122 if (current != coro)
2320 { 3123 {
3124 PUTBACK;
2321 save_perl (aTHX_ coro); 3125 save_perl (aTHX_ coro);
2322 load_perl (aTHX_ &temp); 3126 load_perl (aTHX_ current);
2323 SPAGAIN; 3127 SPAGAIN;
2324 } 3128 }
2325 } 3129 }
2326} 3130}
2327 3131
… …
2331 ALIAS: 3135 ALIAS:
2332 is_ready = CF_READY 3136 is_ready = CF_READY
2333 is_running = CF_RUNNING 3137 is_running = CF_RUNNING
2334 is_new = CF_NEW 3138 is_new = CF_NEW
2335 is_destroyed = CF_DESTROYED 3139 is_destroyed = CF_DESTROYED
3140 is_suspended = CF_SUSPENDED
2336 CODE: 3141 CODE:
2337 RETVAL = boolSV (coro->flags & ix); 3142 RETVAL = boolSV (coro->flags & ix);
2338 OUTPUT: 3143 OUTPUT:
2339 RETVAL 3144 RETVAL
2340 3145
2341void 3146void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3147throw (Coro::State self, SV *throw = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3148 PROTOTYPE: $;$
2344 CODE: 3149 CODE:
3150{
3151 struct coro *current = SvSTATE_current;
3152 SV **throwp = self == current ? &CORO_THROW : &self->except;
2345 SvREFCNT_dec (self->throw); 3153 SvREFCNT_dec (*throwp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3154 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3155}
2347 3156
2348void 3157void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3158api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3159 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3160 C_ARGS: aTHX_ coro, flags
2352 3161
2353SV * 3162SV *
2354has_cctx (Coro::State coro) 3163has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3164 PROTOTYPE: $
2356 CODE: 3165 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3166 /* maybe manage the running flag differently */
3167 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3168 OUTPUT:
2359 RETVAL 3169 RETVAL
2360 3170
2361int 3171int
2362is_traced (Coro::State coro) 3172is_traced (Coro::State coro)
… …
2382 3192
2383void 3193void
2384force_cctx () 3194force_cctx ()
2385 PROTOTYPE: 3195 PROTOTYPE:
2386 CODE: 3196 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3197 cctx_current->idle_sp = 0;
2388 3198
2389void 3199void
2390swap_defsv (Coro::State self) 3200swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3201 PROTOTYPE: $
2392 ALIAS: 3202 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3210 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3211
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3212 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3213 }
2404 3214
3215void
3216cancel (Coro::State self)
3217 CODE:
3218 coro_state_destroy (aTHX_ self);
3219 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3220
3221
2405MODULE = Coro::State PACKAGE = Coro 3222MODULE = Coro::State PACKAGE = Coro
2406 3223
2407BOOT: 3224BOOT:
2408{ 3225{
2409 int i;
2410
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3226 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3227 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3228 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3229 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3230 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 SvREADONLY_on (coro_current); 3231 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3232 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3233 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3234 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3235
3236 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3237 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3238 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3239 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2417 3240
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3241 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3242
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3243 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3244 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
2422 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3245 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
2423 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3246 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
2424 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3247 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
2425 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3248 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
2426 3249
2427 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2428 coro_ready[i] = newAV ();
2429
2430 { 3250 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3251 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3252
2433 coroapi.schedule = api_schedule; 3253 coroapi.schedule = api_schedule;
3254 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3255 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3256 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3257 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3258 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3259 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3260 coroapi.current = coro_current;
2440 3261
2441 GCoroAPI = &coroapi; 3262 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3263 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3264 SvREADONLY_on (sv);
2444 } 3265 }
2445} 3266}
2446 3267
2447void 3268void
3269terminate (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3272
3273void
2448schedule (...) 3274schedule (...)
2449 CODE: 3275 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3276 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3277
3278void
3279schedule_to (...)
3280 CODE:
3281 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3282
3283void
3284cede_to (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2451 3287
2452void 3288void
2453cede (...) 3289cede (...)
2454 CODE: 3290 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3291 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3292
2457void 3293void
2458cede_notself (...) 3294cede_notself (...)
2459 CODE: 3295 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3296 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2461 3297
2462void 3298void
2463_set_current (SV *current) 3299_set_current (SV *current)
2464 PROTOTYPE: $ 3300 PROTOTYPE: $
2465 CODE: 3301 CODE:
… …
2510 CODE: 3346 CODE:
2511 RETVAL = coro_nready; 3347 RETVAL = coro_nready;
2512 OUTPUT: 3348 OUTPUT:
2513 RETVAL 3349 RETVAL
2514 3350
2515# for async_pool speedup
2516void 3351void
2517_pool_1 (SV *cb) 3352suspend (Coro::State self)
3353 PROTOTYPE: $
2518 CODE: 3354 CODE:
2519{ 3355 self->flags |= CF_SUSPENDED;
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 3356
2554void 3357void
2555_pool_2 (SV *cb) 3358resume (Coro::State self)
3359 PROTOTYPE: $
2556 CODE: 3360 CODE:
2557{ 3361 self->flags &= ~CF_SUSPENDED;
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 3362
2589void 3363void
2590_get_state (SV *self) 3364_pool_handler (...)
3365 CODE:
3366 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3367
3368void
3369async_pool (SV *cv, ...)
2591 PROTOTYPE: $ 3370 PROTOTYPE: &@
2592 PPCODE: 3371 PPCODE:
2593{ 3372{
2594 AV *defav = GvAV (PL_defgv); 3373 HV *hv = (HV *)av_pop (av_async_pool);
2595 AV *av = newAV (); 3374 AV *av = newAV ();
3375 SV *cb = ST (0);
2596 int i; 3376 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 3377
2602 data->errorno = errno; 3378 av_extend (av, items - 2);
2603 data->laststype = PL_laststype; 3379 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])); 3380 av_push (av, SvREFCNT_inc_NN (ST (i)));
2611 3381
2612 av_push (av, data_sv); 3382 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 { 3383 {
2659 PUSHMARK (SP); 3384 PUSHMARK (SP);
3385 EXTEND (SP, 2);
3386 PUSHs (sv_Coro);
3387 PUSHs ((SV *)cv_pool_handler);
2660 PUTBACK; 3388 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3389 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2662 SPAGAIN; 3390 SPAGAIN;
3391
3392 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2663 } 3393 }
2664 3394
2665 --incede; 3395 {
3396 struct coro *coro = SvSTATE_hv (hv);
3397
3398 assert (!coro->invoke_cb);
3399 assert (!coro->invoke_av);
3400 coro->invoke_cb = SvREFCNT_inc (cb);
3401 coro->invoke_av = av;
3402 }
3403
3404 api_ready (aTHX_ (SV *)hv);
3405
3406 if (GIMME_V != G_VOID)
3407 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3408 else
3409 SvREFCNT_dec (hv);
3410}
3411
3412SV *
3413rouse_cb ()
3414 PROTOTYPE:
3415 CODE:
3416 RETVAL = coro_new_rouse_cb (aTHX);
3417 OUTPUT:
3418 RETVAL
3419
3420void
3421rouse_wait (...)
3422 PROTOTYPE: ;$
3423 PPCODE:
3424 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3425
3426void
3427on_enter (SV *block)
3428 ALIAS:
3429 on_leave = 1
3430 PROTOTYPE: &
3431 CODE:
3432{
3433 struct coro *coro = SvSTATE_current;
3434 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3435
3436 block = (SV *)coro_sv_2cv (aTHX_ block);
3437
3438 if (!*avp)
3439 *avp = newAV ();
3440
3441 av_push (*avp, SvREFCNT_inc (block));
3442
3443 if (!ix)
3444 on_enterleave_call (aTHX_ block);
3445
3446 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3447 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3448 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2666} 3449}
2667 3450
2668 3451
2669MODULE = Coro::State PACKAGE = PerlIO::cede 3452MODULE = Coro::State PACKAGE = PerlIO::cede
2670 3453
2671BOOT: 3454BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3455 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 3456
3457
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 3458MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 3459
2676SV * 3460SV *
2677new (SV *klass, SV *count_ = 0) 3461new (SV *klass, SV *count = 0)
2678 CODE: 3462 CODE:
2679{ 3463 RETVAL = sv_bless (
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3464 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2681 AV *av = newAV (); 3465 GvSTASH (CvGV (cv))
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3466 );
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3467 OUTPUT:
2684} 3468 RETVAL
3469
3470# helper for Coro::Channel and others
3471SV *
3472_alloc (int count)
3473 CODE:
3474 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 3475 OUTPUT:
2686 RETVAL 3476 RETVAL
2687 3477
2688SV * 3478SV *
2689count (SV *self) 3479count (SV *self)
… …
2698 adjust = 1 3488 adjust = 1
2699 CODE: 3489 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3490 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 3491
2702void 3492void
2703down (SV *self) 3493down (...)
2704 CODE: 3494 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3495 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3496
3497void
3498wait (...)
3499 CODE:
3500 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 3501
2707void 3502void
2708try (SV *self) 3503try (SV *self)
2709 PPCODE: 3504 PPCODE:
2710{ 3505{
… …
2722 XSRETURN_NO; 3517 XSRETURN_NO;
2723} 3518}
2724 3519
2725void 3520void
2726waiters (SV *self) 3521waiters (SV *self)
2727 CODE: 3522 PPCODE:
2728{ 3523{
2729 AV *av = (AV *)SvRV (self); 3524 AV *av = (AV *)SvRV (self);
3525 int wcount = AvFILLp (av) + 1 - 1;
2730 3526
2731 if (GIMME_V == G_SCALAR) 3527 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3528 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 3529 else
2734 { 3530 {
2735 int i; 3531 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 3532 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 3533 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 3534 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 3535 }
2740} 3536}
2741 3537
3538MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3539
3540void
3541_may_delete (SV *sem, int count, int extra_refs)
3542 PPCODE:
3543{
3544 AV *av = (AV *)SvRV (sem);
3545
3546 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3547 && AvFILLp (av) == 0 /* no waiters, just count */
3548 && SvIV (AvARRAY (av)[0]) == count)
3549 XSRETURN_YES;
3550
3551 XSRETURN_NO;
3552}
3553
3554MODULE = Coro::State PACKAGE = Coro::Signal
3555
3556SV *
3557new (SV *klass)
3558 CODE:
3559 RETVAL = sv_bless (
3560 coro_waitarray_new (aTHX_ 0),
3561 GvSTASH (CvGV (cv))
3562 );
3563 OUTPUT:
3564 RETVAL
3565
3566void
3567wait (...)
3568 CODE:
3569 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3570
3571void
3572broadcast (SV *self)
3573 CODE:
3574{
3575 AV *av = (AV *)SvRV (self);
3576 coro_signal_wake (aTHX_ av, AvFILLp (av));
3577}
3578
3579void
3580send (SV *self)
3581 CODE:
3582{
3583 AV *av = (AV *)SvRV (self);
3584
3585 if (AvFILLp (av))
3586 coro_signal_wake (aTHX_ av, 1);
3587 else
3588 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3589}
3590
3591IV
3592awaited (SV *self)
3593 CODE:
3594 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3595 OUTPUT:
3596 RETVAL
3597
3598
3599MODULE = Coro::State PACKAGE = Coro::AnyEvent
3600
3601BOOT:
3602 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3603
3604void
3605_schedule (...)
3606 CODE:
3607{
3608 static int incede;
3609
3610 api_cede_notself (aTHX);
3611
3612 ++incede;
3613 while (coro_nready >= incede && api_cede (aTHX))
3614 ;
3615
3616 sv_setsv (sv_activity, &PL_sv_undef);
3617 if (coro_nready >= incede)
3618 {
3619 PUSHMARK (SP);
3620 PUTBACK;
3621 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3622 }
3623
3624 --incede;
3625}
3626
3627
3628MODULE = Coro::State PACKAGE = Coro::AIO
3629
3630void
3631_register (char *target, char *proto, SV *req)
3632 CODE:
3633{
3634 CV *req_cv = coro_sv_2cv (aTHX_ req);
3635 /* newXSproto doesn't return the CV on 5.8 */
3636 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3637 sv_setpv ((SV *)slf_cv, proto);
3638 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3639}
3640

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