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Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.346 by root, Tue Jun 9 18:56:45 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 */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
172static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 184static SV *rv_diehook;
175static SV *rv_warnhook; 185static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
177 187
178/* async_pool helper stuff */ 188/* async_pool helper stuff */
179static SV *sv_pool_rss; 189static SV *sv_pool_rss;
180static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
181static 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;
182 196
183/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
184static SV *sv_activity; 198static SV *sv_activity;
185 199
186static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
219 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 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 */
225}; 244};
226 245
227/* 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 */
228typedef struct 247typedef struct
229{ 248{
230 SV *defsv; 249 SV *defsv;
231 AV *defav; 250 AV *defav;
232 SV *errsv; 251 SV *errsv;
233 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
234#define VAR(name,type) type name; 254#define VAR(name,type) type name;
235# include "state.h" 255# include "state.h"
236#undef VAR 256#undef VAR
237} perl_slots; 257} perl_slots;
238 258
… …
241/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
242struct coro { 262struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 264 coro_cctx *cctx;
245 265
246 /* process data */ 266 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 267 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 268 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
250 270
271 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 276 void (*on_destroy)(pTHX_ struct coro *coro);
256 277
257 /* statistics */ 278 /* statistics */
258 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
259 280
260 /* coro process data */ 281 /* coro process data */
261 int prio; 282 int prio;
262 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
263 285
264 /* async_pool */ 286 /* async_pool */
265 SV *saved_deffh; 287 SV *saved_deffh;
288 SV *invoke_cb;
289 AV *invoke_av;
290
291 /* on_enter/on_leave */
292 AV *on_enter;
293 AV *on_leave;
266 294
267 /* linked list */ 295 /* linked list */
268 struct coro *next, *prev; 296 struct coro *next, *prev;
269}; 297};
270 298
271typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
273 301
302/* the following variables are effectively part of the perl context */
303/* and get copied between struct coro and these variables */
304/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 305static struct CoroSLF slf_frame; /* the current slf frame */
275 306
276/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
277 308
278#define PRIO_MAX 3 309#define PRIO_MAX 3
… …
284 315
285/* for Coro.pm */ 316/* for Coro.pm */
286static SV *coro_current; 317static SV *coro_current;
287static SV *coro_readyhook; 318static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 319static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
320static CV *cv_coro_run, *cv_coro_terminate;
289static struct coro *coro_first; 321static struct coro *coro_first;
290#define coro_nready coroapi.nready 322#define coro_nready coroapi.nready
291 323
292/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
293 325
… …
319 get_hv (name, create); 351 get_hv (name, create);
320#endif 352#endif
321 return get_hv (name, create); 353 return get_hv (name, create);
322} 354}
323 355
356/* may croak */
357INLINE CV *
358coro_sv_2cv (pTHX_ SV *sv)
359{
360 HV *st;
361 GV *gvp;
362 CV *cv = sv_2cv (sv, &st, &gvp, 0);
363
364 if (!cv)
365 croak ("code reference expected");
366
367 return cv;
368}
369
370/*****************************************************************************/
371/* magic glue */
372
373#define CORO_MAGIC_type_cv 26
374#define CORO_MAGIC_type_state PERL_MAGIC_ext
375
376#define CORO_MAGIC_NN(sv, type) \
377 (expect_true (SvMAGIC (sv)->mg_type == type) \
378 ? SvMAGIC (sv) \
379 : mg_find (sv, type))
380
381#define CORO_MAGIC(sv, type) \
382 (expect_true (SvMAGIC (sv)) \
383 ? CORO_MAGIC_NN (sv, type) \
384 : 0)
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388
389INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414
415/* faster than SvSTATE, but expects a coroutine hv */
416#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
417#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418
419/*****************************************************************************/
420/* padlist management and caching */
421
324static AV * 422static AV *
325coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
326{ 424{
327 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
329 427
330 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 434#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 436 --AvFILLp (padlist);
339 437
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
342 440
343 return newpadlist; 441 return newpadlist;
344} 442}
345 443
346static void 444static void
347free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
348{ 446{
349 /* may be during global destruction */ 447 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
351 { 449 {
352 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
353 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
354 { 453 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
356 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 456 I32 j = AvFILLp (av);
358 SV *sv; 457
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 463 }
365 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
367 } 469 }
368} 470}
369 471
370static int 472static int
… …
379 481
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 483
382 return 0; 484 return 0;
383} 485}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 486
388static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 488 0, 0, 0, 0,
390 coro_cv_free 489 coro_cv_free
391}; 490};
392
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 491
442/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
443static void 493static void
444get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
445{ 495{
… …
451 else 501 else
452 { 502 {
453#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
460#else 510#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 512#endif
463 } 513 }
464} 514}
465 515
466static void 516static void
… …
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 523 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
474 524
475 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
476 526
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
479 529
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 531}
482 532
483/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
484 537
485static void 538static void
486load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
487{ 540{
488 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
489 c->slot = 0; 542 c->slot = 0;
490 543
491 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
492 545
493 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
497 551
498 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
499 # include "state.h" 553 # include "state.h"
500 #undef VAR 554 #undef VAR
501 555
… …
513 } 567 }
514 568
515 PUTBACK; 569 PUTBACK;
516 } 570 }
517 571
518 slf_frame = c->slf_frame; 572 slf_frame = c->slf_frame;
573 CORO_THROW = c->except;
574
575 if (expect_false (c->on_enter))
576 {
577 int i;
578
579 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581 }
519} 582}
520 583
521static void 584static void
522save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
523{ 586{
587 if (expect_false (c->on_leave))
588 {
589 int i;
590
591 for (i = AvFILLp (c->on_leave); i >= 0; --i)
592 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
593 }
594
595 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 596 c->slf_frame = slf_frame;
525 597
526 { 598 {
527 dSP; 599 dSP;
528 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
… …
585 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
586 658
587 { 659 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 661
590 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
592 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
594 667
595 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 669 # include "state.h"
597 #undef VAR 670 #undef VAR
598 } 671 }
… …
603 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
606 */ 679 */
607#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
609#else 682#else
610static void 683static void
611coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
612{ 685{
613 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 750 Safefree (PL_retstack);
678#endif 751#endif
679} 752}
680 753
754#define CORO_RSS \
755 rss += sizeof (SYM (curstackinfo)); \
756 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
757 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
758 rss += SYM (tmps_max) * sizeof (SV *); \
759 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
760 rss += SYM (scopestack_max) * sizeof (I32); \
761 rss += SYM (savestack_max) * sizeof (ANY);
762
681static size_t 763static size_t
682coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
683{ 765{
684 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
685 767
686 if (coro->mainstack) 768 if (coro->mainstack)
687 { 769 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
692 { 771 {
693 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
694 773 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 774 #undef SYM
698 } 775 }
699 else 776 else
700 slot = coro->slot;
701
702 if (slot)
703 { 777 {
704 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 781 }
716 } 782 }
717 783
718 return rss; 784 return rss;
719} 785}
… …
732#endif 798#endif
733 799
734/* 800/*
735 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
738 * readback here. 804 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 805 */
743static int 806static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 808{
746 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 863
801 if (svp) 864 if (svp)
802 { 865 {
803 SV *old = *svp; 866 SV *old = *svp;
804 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
806 return 0; 869 return 0;
807 } 870 }
808 } 871 }
809 872
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 884slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 885{
823 return 0; 886 return 0;
824} 887}
825 888
826static void 889static int
890slf_check_repeat (pTHX_ struct CoroSLF *frame)
891{
892 return 1;
893}
894
895static UNOP coro_setup_op;
896
897static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
828{ 899{
829 /* 900 /*
830 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
831 */ 902 */
… …
833 904
834 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 912 PL_curpm = 0;
839 PL_curpad = 0; 913 PL_curpad = 0;
840 PL_localizing = 0; 914 PL_localizing = 0;
841 PL_dirty = 0; 915 PL_dirty = 0;
842 PL_restartop = 0; 916 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 918 PL_parser = 0;
845#endif 919#endif
920 PL_hints = 0;
846 921
847 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 923 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 924 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
850 925
851 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 929 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
930 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 933
858 { 934 {
859 dSP; 935 dSP;
860 UNOP myop; 936 UNOP myop;
861 937
862 Zero (&myop, 1, UNOP); 938 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
865 942
866 PUSHMARK (SP); 943 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 945 PUTBACK;
869 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 948 }
873 949
874 /* this newly created coroutine might be run on an existing cctx which most 950 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 951 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 952 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 953 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 954 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879}
880 955
956 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957 coro_setup_op.op_next = PL_op;
958 coro_setup_op.op_type = OP_ENTERSUB;
959 coro_setup_op.op_ppaddr = pp_slf;
960 /* no flags etc. required, as an init function won't be called */
961
962 PL_op = (OP *)&coro_setup_op;
963
964 /* copy throw, in case it was set before coro_setup */
965 CORO_THROW = coro->except;
966}
967
881static void 968static void
882coro_destruct (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
883{ 970{
884 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
885 { 972 {
886 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
896 983
897 /* unwind main stack */ 984 /* unwind main stack */
898 dounwind (-1); 985 dounwind (-1);
899 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
900 993
901 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
902 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
903 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
904 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
905 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
907 1001
908 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
910 1004
911 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
913 1009
914 coro_destruct_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
915} 1011}
916 1012
917INLINE void 1013INLINE void
… …
927static int 1023static int
928runops_trace (pTHX) 1024runops_trace (pTHX)
929{ 1025{
930 COP *oldcop = 0; 1026 COP *oldcop = 0;
931 int oldcxix = -2; 1027 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1028
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1030 {
937 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
938 1032
939 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1034 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1035 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1036 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1038 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
946 SV **cb; 1040 SV **cb;
… …
983 1077
984 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
985 { 1079 {
986 SV **cb; 1080 SV **cb;
987 1081
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1083 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1085
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1087 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1088 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
998 1091
999 if (isGV (gv)) 1092 if (isGV (gv))
… …
1004 SAVETMPS; 1097 SAVETMPS;
1005 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1099 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1101 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1102 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1103 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1104 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1105 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1106 SPAGAIN;
1014 FREETMPS; 1107 FREETMPS;
… …
1017 } 1110 }
1018 1111
1019 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
1020 } 1113 }
1021 1114
1022 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1116 {
1024 dSP; 1117 dSP;
1025 1118
1026 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1120 ENTER;
… …
1046 1139
1047 TAINT_NOT; 1140 TAINT_NOT;
1048 return 0; 1141 return 0;
1049} 1142}
1050 1143
1144static struct CoroSLF cctx_ssl_frame;
1145
1051static void 1146static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1148{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1149 ta->prev = 0;
1056} 1150}
1057 1151
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1152static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1154{
1061/* also initialises PL_top_env */ 1155 *frame = cctx_ssl_frame;
1156
1157 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1158}
1159
1160/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1161static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1064{ 1163{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1069 1165
1070 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1072 1168
1073 Zero (&myop, 1, UNOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1171 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1172 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1173
1077 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1176
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1179}
1086 1180
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1181/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1182INLINE void
1089transfer_tail (pTHX) 1183transfer_tail (pTHX)
… …
1108 /* normally we would need to skip the entersub here */ 1202 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1203 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1204 /* PL_nop = PL_nop->op_next */
1111 1205
1112 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1114 1208
1115 /* cctx_run is the alternative tail of transfer() */ 1209 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1210 transfer_tail (aTHX);
1117 1211
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1212 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1214 perl_run (PL_curinterp);
1215 /*
1216 * Unfortunately, there is no way to get at the return values of the
1217 * coro body here, as perl_run destroys these
1218 */
1121 1219
1122 /* 1220 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1221 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1222 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1223 * reason for perl_run to return. We try to exit by jumping to the
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * coroutine as Coro has no such concept 1225 * coroutine as Coro has no such concept.
1226 * This actually isn't valid with the pthread backend, but OSes requiring
1227 * that backend are too broken to do it in a standards-compliant way.
1128 */ 1228 */
1129 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1230 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1231 }
1132} 1232}
… …
1209cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1210{ 1310{
1211 if (!cctx) 1311 if (!cctx)
1212 return; 1312 return;
1213 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1214 --cctx_count; 1316 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1317 coro_destroy (&cctx->cctx);
1216 1318
1217 /* coro_transfer creates new, empty cctx's */ 1319 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1320 if (cctx->sptr)
… …
1276/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1277 1379
1278static void 1380static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1281 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1282 { 1386 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1389
1286 if (expect_false (next->flags & CF_RUNNING))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1392
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1396#endif
1296 } 1397 }
1297} 1398}
1298 1399
1299/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1300static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1403{
1303 dSTACKLEVEL; 1404 dSTACKLEVEL;
1304 1405
1305 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1407 if (expect_false (!prev))
1307 { 1408 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1409 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1410 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1411 }
1311 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1312 { 1413 {
1313 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1314 1415
1315 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1316 { 1417 {
1317 /* create a new empty/source context */ 1418 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1321 } 1421 }
1322 1422
1323 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
… …
1334 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1335 } 1435 }
1336 else 1436 else
1337 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1338 1438
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1439 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1440 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1441 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1443 && !force_cctx
1346 )) 1444 ))
1347 { 1445 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1446 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1447 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1448
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1449 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1358 1454
1359 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1360 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1361 1459
1362 ++next->usecount; 1460 ++next->usecount;
1363 1461
1364 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1464
1367 if (expect_false (prev__cctx != next->cctx)) 1465 next->cctx = 0;
1466
1467 if (expect_false (cctx_prev != cctx_current))
1368 { 1468 {
1369 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1472 }
1373 1473
1374 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1375 } 1475 }
1376} 1476}
… …
1384coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1485{
1386 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1387 return 0; 1487 return 0;
1388 1488
1389 if (coro->on_destroy) 1489 if (coro->on_destroy && !PL_dirty)
1390 coro->on_destroy (aTHX_ coro); 1490 coro->on_destroy (aTHX_ coro);
1391 1491
1392 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1393 1493
1394 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
… …
1398 --coro_nready; 1498 --coro_nready;
1399 } 1499 }
1400 else 1500 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1501 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1502
1403 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1404 { 1507 {
1405 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1406 1509
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1510 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1408 1511
1409 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1410 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1411 1514
1412 coro_destruct (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1413 1516
1414 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1415 1518
1416 coro->slot = 0; 1519 coro->slot = 0;
1417 } 1520 }
1418 1521
1419 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1421 1526
1422 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1425 1530
… …
1479 1584
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1482} 1587}
1483 1588
1589/*****************************************************************************/
1590/* gensub: simple closure generation utility */
1591
1592#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594/* create a closure from XS, returns a code reference */
1595/* the arg can be accessed via GENSUB_ARG from the callback */
1596/* the callback must use dXSARGS/XSRETURN */
1597static SV *
1598gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599{
1600 CV *cv = (CV *)newSV (0);
1601
1602 sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604 CvANON_on (cv);
1605 CvISXSUB_on (cv);
1606 CvXSUB (cv) = xsub;
1607 GENSUB_ARG = arg;
1608
1609 return newRV_noinc ((SV *)cv);
1610}
1611
1484/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1485 1613
1486INLINE void 1614INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1615coro_enq (pTHX_ struct coro *coro)
1488{ 1616{
… …
1506{ 1634{
1507 struct coro *coro; 1635 struct coro *coro;
1508 SV *sv_hook; 1636 SV *sv_hook;
1509 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1510 1638
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1515 1640
1516 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1517 return 0; 1642 return 0;
1518 1643
… …
1531 ENTER; 1656 ENTER;
1532 SAVETMPS; 1657 SAVETMPS;
1533 1658
1534 PUSHMARK (SP); 1659 PUSHMARK (SP);
1535 PUTBACK; 1660 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1662
1539 FREETMPS; 1663 FREETMPS;
1540 LEAVE; 1664 LEAVE;
1541 } 1665 }
1542 1666
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1551{ 1675{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1677}
1554 1678
1679/* expects to own a reference to next->hv */
1555INLINE void 1680INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1682{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1683 SV *prev_sv = SvRV (coro_current);
1684
1598 ta->prev = SvSTATE_hv (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1599 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1689
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1603 1691
1604 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1606} 1694}
1607 1695
1696static void
1697prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698{
1699 for (;;)
1700 {
1701 SV *next_sv = coro_deq (aTHX);
1702
1703 if (expect_true (next_sv))
1704 {
1705 struct coro *next = SvSTATE_hv (next_sv);
1706
1707 /* cannot transfer to destroyed coros, skip and look for next */
1708 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1710 else
1711 {
1712 next->flags &= ~CF_READY;
1713 --coro_nready;
1714
1715 prepare_schedule_to (aTHX_ ta, next);
1716 break;
1717 }
1718 }
1719 else
1720 {
1721 /* nothing to schedule: call the idle handler */
1722 if (SvROK (sv_idle)
1723 && SvOBJECT (SvRV (sv_idle)))
1724 {
1725 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726 api_ready (aTHX_ SvRV (sv_idle));
1727 --coro_nready;
1728 }
1729 else
1730 {
1731 dSP;
1732
1733 ENTER;
1734 SAVETMPS;
1735
1736 PUSHMARK (SP);
1737 PUTBACK;
1738 call_sv (sv_idle, G_VOID | G_DISCARD);
1739
1740 FREETMPS;
1741 LEAVE;
1742 }
1743 }
1744 }
1745}
1746
1608INLINE void 1747INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1749{
1611 api_ready (aTHX_ coro_current); 1750 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1751 prepare_schedule (aTHX_ ta);
… …
1631{ 1770{
1632 struct coro_transfer_args ta; 1771 struct coro_transfer_args ta;
1633 1772
1634 prepare_schedule (aTHX_ &ta); 1773 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1774 TRANSFER (ta, 1);
1775}
1776
1777static void
1778api_schedule_to (pTHX_ SV *coro_sv)
1779{
1780 struct coro_transfer_args ta;
1781 struct coro *next = SvSTATE (coro_sv);
1782
1783 SvREFCNT_inc_NN (coro_sv);
1784 prepare_schedule_to (aTHX_ &ta, next);
1636} 1785}
1637 1786
1638static int 1787static int
1639api_cede (pTHX) 1788api_cede (pTHX)
1640{ 1789{
… …
1669static void 1818static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1820{
1672 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1673 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1674 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1675 { 1827 {
1676 if (!coro->cctx) 1828 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1829 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1832
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1834 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1836 {
… …
1687 if (coro->flags & CF_RUNNING) 1839 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1840 PL_runops = RUNOPS_DEFAULT;
1689 else 1841 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1843 }
1844}
1845
1846static void
1847coro_call_on_destroy (pTHX_ struct coro *coro)
1848{
1849 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1850 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1851
1852 if (on_destroyp)
1853 {
1854 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1855
1856 while (AvFILLp (on_destroy) >= 0)
1857 {
1858 dSP; /* don't disturb outer sp */
1859 SV *cb = av_pop (on_destroy);
1860
1861 PUSHMARK (SP);
1862
1863 if (statusp)
1864 {
1865 int i;
1866 AV *status = (AV *)SvRV (*statusp);
1867 EXTEND (SP, AvFILLp (status) + 1);
1868
1869 for (i = 0; i <= AvFILLp (status); ++i)
1870 PUSHs (AvARRAY (status)[i]);
1871 }
1872
1873 PUTBACK;
1874 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1875 }
1876 }
1877}
1878
1879static void
1880slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1881{
1882 int i;
1883 HV *hv = (HV *)SvRV (coro_current);
1884 AV *av = newAV ();
1885
1886 av_extend (av, items - 1);
1887 for (i = 0; i < items; ++i)
1888 av_push (av, SvREFCNT_inc_NN (arg [i]));
1889
1890 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891
1892 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893 api_ready (aTHX_ sv_manager);
1894
1895 frame->prepare = prepare_schedule;
1896 frame->check = slf_check_repeat;
1897
1898 /* as a minor optimisation, we could unwind all stacks here */
1899 /* but that puts extra pressure on pp_slf, and is not worth much */
1900 /*coro_unwind_stacks (aTHX);*/
1901}
1902
1903/*****************************************************************************/
1904/* async pool handler */
1905
1906static int
1907slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1908{
1909 HV *hv = (HV *)SvRV (coro_current);
1910 struct coro *coro = (struct coro *)frame->data;
1911
1912 if (!coro->invoke_cb)
1913 return 1; /* loop till we have invoke */
1914 else
1915 {
1916 hv_store (hv, "desc", sizeof ("desc") - 1,
1917 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1918
1919 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1920
1921 {
1922 dSP;
1923 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1924 PUTBACK;
1925 }
1926
1927 SvREFCNT_dec (GvAV (PL_defgv));
1928 GvAV (PL_defgv) = coro->invoke_av;
1929 coro->invoke_av = 0;
1930
1931 return 0;
1932 }
1933}
1934
1935static void
1936slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1937{
1938 HV *hv = (HV *)SvRV (coro_current);
1939 struct coro *coro = SvSTATE_hv ((SV *)hv);
1940
1941 if (expect_true (coro->saved_deffh))
1942 {
1943 /* subsequent iteration */
1944 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1945 coro->saved_deffh = 0;
1946
1947 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1948 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1949 {
1950 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1951 coro->invoke_av = newAV ();
1952
1953 frame->prepare = prepare_nop;
1954 }
1955 else
1956 {
1957 av_clear (GvAV (PL_defgv));
1958 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1959
1960 coro->prio = 0;
1961
1962 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1963 api_trace (aTHX_ coro_current, 0);
1964
1965 frame->prepare = prepare_schedule;
1966 av_push (av_async_pool, SvREFCNT_inc (hv));
1967 }
1968 }
1969 else
1970 {
1971 /* first iteration, simply fall through */
1972 frame->prepare = prepare_nop;
1973 }
1974
1975 frame->check = slf_check_pool_handler;
1976 frame->data = (void *)coro;
1977}
1978
1979/*****************************************************************************/
1980/* rouse callback */
1981
1982#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1983
1984static void
1985coro_rouse_callback (pTHX_ CV *cv)
1986{
1987 dXSARGS;
1988 SV *data = (SV *)GENSUB_ARG;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 {
1992 /* first call, set args */
1993 SV *coro = SvRV (data);
1994 AV *av = newAV ();
1995
1996 SvRV_set (data, (SV *)av);
1997
1998 /* better take a full copy of the arguments */
1999 while (items--)
2000 av_store (av, items, newSVsv (ST (items)));
2001
2002 api_ready (aTHX_ coro);
2003 SvREFCNT_dec (coro);
2004 }
2005
2006 XSRETURN_EMPTY;
2007}
2008
2009static int
2010slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2011{
2012 SV *data = (SV *)frame->data;
2013
2014 if (CORO_THROW)
2015 return 0;
2016
2017 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2018 return 1;
2019
2020 /* now push all results on the stack */
2021 {
2022 dSP;
2023 AV *av = (AV *)SvRV (data);
2024 int i;
2025
2026 EXTEND (SP, AvFILLp (av) + 1);
2027 for (i = 0; i <= AvFILLp (av); ++i)
2028 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2029
2030 /* we have stolen the elements, so set length to zero and free */
2031 AvFILLp (av) = -1;
2032 av_undef (av);
2033
2034 PUTBACK;
2035 }
2036
2037 return 0;
2038}
2039
2040static void
2041slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 SV *cb;
2044
2045 if (items)
2046 cb = arg [0];
2047 else
2048 {
2049 struct coro *coro = SvSTATE_current;
2050
2051 if (!coro->rouse_cb)
2052 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2053
2054 cb = sv_2mortal (coro->rouse_cb);
2055 coro->rouse_cb = 0;
2056 }
2057
2058 if (!SvROK (cb)
2059 || SvTYPE (SvRV (cb)) != SVt_PVCV
2060 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2061 croak ("Coro::rouse_wait called with illegal callback argument,");
2062
2063 {
2064 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2065 SV *data = (SV *)GENSUB_ARG;
2066
2067 frame->data = (void *)data;
2068 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2069 frame->check = slf_check_rouse_wait;
2070 }
2071}
2072
2073static SV *
2074coro_new_rouse_cb (pTHX)
2075{
2076 HV *hv = (HV *)SvRV (coro_current);
2077 struct coro *coro = SvSTATE_hv (hv);
2078 SV *data = newRV_inc ((SV *)hv);
2079 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2080
2081 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2082 SvREFCNT_dec (data); /* magicext increases the refcount */
2083
2084 SvREFCNT_dec (coro->rouse_cb);
2085 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2086
2087 return cb;
2088}
2089
2090/*****************************************************************************/
2091/* schedule-like-function opcode (SLF) */
2092
2093static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2094static const CV *slf_cv;
2095static SV **slf_argv;
2096static int slf_argc, slf_arga; /* count, allocated */
2097static I32 slf_ax; /* top of stack, for restore */
2098
2099/* this restores the stack in the case we patched the entersub, to */
2100/* recreate the stack frame as perl will on following calls */
2101/* since entersub cleared the stack */
2102static OP *
2103pp_restore (pTHX)
2104{
2105 int i;
2106 SV **SP = PL_stack_base + slf_ax;
2107
2108 PUSHMARK (SP);
2109
2110 EXTEND (SP, slf_argc + 1);
2111
2112 for (i = 0; i < slf_argc; ++i)
2113 PUSHs (sv_2mortal (slf_argv [i]));
2114
2115 PUSHs ((SV *)CvGV (slf_cv));
2116
2117 RETURNOP (slf_restore.op_first);
2118}
2119
2120static void
2121slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2122{
2123 SV **arg = (SV **)slf_frame.data;
2124
2125 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2126}
2127
2128static void
2129slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (items != 2)
2132 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2133
2134 frame->prepare = slf_prepare_transfer;
2135 frame->check = slf_check_nop;
2136 frame->data = (void *)arg; /* let's hope it will stay valid */
2137}
2138
2139static void
2140slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_schedule;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2148{
2149 struct coro *next = (struct coro *)slf_frame.data;
2150
2151 SvREFCNT_inc_NN (next->hv);
2152 prepare_schedule_to (aTHX_ ta, next);
2153}
2154
2155static void
2156slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2157{
2158 if (!items)
2159 croak ("Coro::schedule_to expects a coroutine argument, caught");
2160
2161 frame->data = (void *)SvSTATE (arg [0]);
2162 frame->prepare = slf_prepare_schedule_to;
2163 frame->check = slf_check_nop;
2164}
2165
2166static void
2167slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2168{
2169 api_ready (aTHX_ SvRV (coro_current));
2170
2171 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2172}
2173
2174static void
2175slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 frame->prepare = prepare_cede;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2183{
2184 frame->prepare = prepare_cede_notself;
2185 frame->check = slf_check_nop;
2186}
2187
2188/*
2189 * these not obviously related functions are all rolled into one
2190 * function to increase chances that they all will call transfer with the same
2191 * stack offset
2192 * SLF stands for "schedule-like-function".
2193 */
2194static OP *
2195pp_slf (pTHX)
2196{
2197 I32 checkmark; /* mark SP to see how many elements check has pushed */
2198
2199 /* set up the slf frame, unless it has already been set-up */
2200 /* the latter happens when a new coro has been started */
2201 /* or when a new cctx was attached to an existing coroutine */
2202 if (expect_true (!slf_frame.prepare))
2203 {
2204 /* first iteration */
2205 dSP;
2206 SV **arg = PL_stack_base + TOPMARK + 1;
2207 int items = SP - arg; /* args without function object */
2208 SV *gv = *sp;
2209
2210 /* do a quick consistency check on the "function" object, and if it isn't */
2211 /* for us, divert to the real entersub */
2212 if (SvTYPE (gv) != SVt_PVGV
2213 || !GvCV (gv)
2214 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2215 return PL_ppaddr[OP_ENTERSUB](aTHX);
2216
2217 if (!(PL_op->op_flags & OPf_STACKED))
2218 {
2219 /* ampersand-form of call, use @_ instead of stack */
2220 AV *av = GvAV (PL_defgv);
2221 arg = AvARRAY (av);
2222 items = AvFILLp (av) + 1;
2223 }
2224
2225 /* now call the init function, which needs to set up slf_frame */
2226 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2227 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2228
2229 /* pop args */
2230 SP = PL_stack_base + POPMARK;
2231
2232 PUTBACK;
2233 }
2234
2235 /* now that we have a slf_frame, interpret it! */
2236 /* we use a callback system not to make the code needlessly */
2237 /* complicated, but so we can run multiple perl coros from one cctx */
2238
2239 do
2240 {
2241 struct coro_transfer_args ta;
2242
2243 slf_frame.prepare (aTHX_ &ta);
2244 TRANSFER (ta, 0);
2245
2246 checkmark = PL_stack_sp - PL_stack_base;
2247 }
2248 while (slf_frame.check (aTHX_ &slf_frame));
2249
2250 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2251
2252 /* exception handling */
2253 if (expect_false (CORO_THROW))
2254 {
2255 SV *exception = sv_2mortal (CORO_THROW);
2256
2257 CORO_THROW = 0;
2258 sv_setsv (ERRSV, exception);
2259 croak (0);
2260 }
2261
2262 /* return value handling - mostly like entersub */
2263 /* make sure we put something on the stack in scalar context */
2264 if (GIMME_V == G_SCALAR)
2265 {
2266 dSP;
2267 SV **bot = PL_stack_base + checkmark;
2268
2269 if (sp == bot) /* too few, push undef */
2270 bot [1] = &PL_sv_undef;
2271 else if (sp != bot + 1) /* too many, take last one */
2272 bot [1] = *sp;
2273
2274 SP = bot + 1;
2275
2276 PUTBACK;
2277 }
2278
2279 return NORMAL;
2280}
2281
2282static void
2283api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2284{
2285 int i;
2286 SV **arg = PL_stack_base + ax;
2287 int items = PL_stack_sp - arg + 1;
2288
2289 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2290
2291 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2292 && PL_op->op_ppaddr != pp_slf)
2293 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2294
2295 CvFLAGS (cv) |= CVf_SLF;
2296 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2297 slf_cv = cv;
2298
2299 /* we patch the op, and then re-run the whole call */
2300 /* we have to put the same argument on the stack for this to work */
2301 /* and this will be done by pp_restore */
2302 slf_restore.op_next = (OP *)&slf_restore;
2303 slf_restore.op_type = OP_CUSTOM;
2304 slf_restore.op_ppaddr = pp_restore;
2305 slf_restore.op_first = PL_op;
2306
2307 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2308
2309 if (PL_op->op_flags & OPf_STACKED)
2310 {
2311 if (items > slf_arga)
2312 {
2313 slf_arga = items;
2314 free (slf_argv);
2315 slf_argv = malloc (slf_arga * sizeof (SV *));
2316 }
2317
2318 slf_argc = items;
2319
2320 for (i = 0; i < items; ++i)
2321 slf_argv [i] = SvREFCNT_inc (arg [i]);
2322 }
2323 else
2324 slf_argc = 0;
2325
2326 PL_op->op_ppaddr = pp_slf;
2327 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2328
2329 PL_op = (OP *)&slf_restore;
2330}
2331
2332/*****************************************************************************/
2333/* dynamic wind */
2334
2335static void
2336on_enterleave_call (pTHX_ SV *cb)
2337{
2338 dSP;
2339
2340 PUSHSTACK;
2341
2342 PUSHMARK (SP);
2343 PUTBACK;
2344 call_sv (cb, G_VOID | G_DISCARD);
2345 SPAGAIN;
2346
2347 POPSTACK;
2348}
2349
2350static SV *
2351coro_avp_pop_and_free (pTHX_ AV **avp)
2352{
2353 AV *av = *avp;
2354 SV *res = av_pop (av);
2355
2356 if (AvFILLp (av) < 0)
2357 {
2358 *avp = 0;
2359 SvREFCNT_dec (av);
2360 }
2361
2362 return res;
2363}
2364
2365static void
2366coro_pop_on_enter (pTHX_ void *coro)
2367{
2368 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2369 SvREFCNT_dec (cb);
2370}
2371
2372static void
2373coro_pop_on_leave (pTHX_ void *coro)
2374{
2375 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2376 on_enterleave_call (aTHX_ sv_2mortal (cb));
1692} 2377}
1693 2378
1694/*****************************************************************************/ 2379/*****************************************************************************/
1695/* PerlIO::cede */ 2380/* PerlIO::cede */
1696 2381
… …
1765 PerlIOBuf_get_cnt, 2450 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2451 PerlIOBuf_set_ptrcnt,
1767}; 2452};
1768 2453
1769/*****************************************************************************/ 2454/*****************************************************************************/
2455/* Coro::Semaphore & Coro::Signal */
1770 2456
1771static const CV *slf_cv; /* for quick consistency check */
1772
1773static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774static SV *slf_arg0;
1775static SV *slf_arg1;
1776static SV *slf_arg2;
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2457static SV *
1782pp_restore (pTHX) 2458coro_waitarray_new (pTHX_ int count)
1783{ 2459{
1784 dSP; 2460 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2461 AV *av = newAV ();
2462 SV **ary;
1785 2463
1786 PUSHMARK (SP); 2464 /* unfortunately, building manually saves memory */
2465 Newx (ary, 2, SV *);
2466 AvALLOC (av) = ary;
2467#if PERL_VERSION_ATLEAST (5,10,0)
2468 AvARRAY (av) = ary;
2469#else
2470 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2471 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2472 SvPVX ((SV *)av) = (char *)ary;
2473#endif
2474 AvMAX (av) = 1;
2475 AvFILLp (av) = 0;
2476 ary [0] = newSViv (count);
1787 2477
1788 EXTEND (SP, 3); 2478 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 2479}
1796 2480
1797static void 2481/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 PUTBACK;
1903
1904 /* now call the init function, which needs to set up slf_frame */
1905 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908 /* pop args */
1909 SP = PL_stack_base + POPMARK;
1910
1911 PUTBACK;
1912 }
1913
1914 /* now that we have a slf_frame, interpret it! */
1915 /* we use a callback system not to make the code needlessly */
1916 /* complicated, but so we can run multiple perl coros from one cctx */
1917
1918 do
1919 {
1920 struct coro_transfer_args ta;
1921
1922 slf_frame.prepare (aTHX_ &ta);
1923 TRANSFER (ta, 0);
1924
1925 checkmark = PL_stack_sp - PL_stack_base;
1926 }
1927 while (slf_frame.check (aTHX_ &slf_frame));
1928
1929 {
1930 dSP;
1931 SV **bot = PL_stack_base + checkmark;
1932 int gimme = GIMME_V;
1933
1934 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936 /* make sure we put something on the stack in scalar context */
1937 if (gimme == G_SCALAR)
1938 {
1939 if (sp == bot)
1940 XPUSHs (&PL_sv_undef);
1941
1942 SP = bot + 1;
1943 }
1944
1945 PUTBACK;
1946 }
1947
1948 {
1949 struct coro *coro = SvSTATE_current;
1950
1951 if (expect_false (coro->throw))
1952 {
1953 SV *exception = sv_2mortal (coro->throw);
1954
1955 coro->throw = 0;
1956 sv_setsv (ERRSV, exception);
1957 croak (0);
1958 }
1959 }
1960
1961 return NORMAL;
1962}
1963
1964static void
1965api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1966{
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 if (items > 3)
1974 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976 CvFLAGS (cv) |= CVf_SLF;
1977 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978 slf_cv = cv;
1979
1980 /* we patch the op, and then re-run the whole call */
1981 /* we have to put the same argument on the stack for this to work */
1982 /* and this will be done by pp_restore */
1983 slf_restore.op_next = (OP *)&slf_restore;
1984 slf_restore.op_type = OP_CUSTOM;
1985 slf_restore.op_ppaddr = pp_restore;
1986 slf_restore.op_first = PL_op;
1987
1988 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992 PL_op->op_ppaddr = pp_slf;
1993
1994 PL_op = (OP *)&slf_restore;
1995}
1996
1997/*****************************************************************************/
1998 2482
1999static void 2483static void
2000coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2484coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001{ 2485{
2002 SV *count_sv = AvARRAY (av)[0]; 2486 SV *count_sv = AvARRAY (av)[0];
… …
2014 AvARRAY (av)[0] = AvARRAY (av)[1]; 2498 AvARRAY (av)[0] = AvARRAY (av)[1];
2015 AvARRAY (av)[1] = count_sv; 2499 AvARRAY (av)[1] = count_sv;
2016 cb = av_shift (av); 2500 cb = av_shift (av);
2017 2501
2018 if (SvOBJECT (cb)) 2502 if (SvOBJECT (cb))
2503 {
2019 api_ready (aTHX_ cb); 2504 api_ready (aTHX_ cb);
2020 else 2505 --count;
2021 croak ("callbacks not yet supported"); 2506 }
2507 else if (SvTYPE (cb) == SVt_PVCV)
2508 {
2509 dSP;
2510 PUSHMARK (SP);
2511 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2512 PUTBACK;
2513 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2514 }
2022 2515
2023 SvREFCNT_dec (cb); 2516 SvREFCNT_dec (cb);
2024
2025 --count;
2026 } 2517 }
2027} 2518}
2028 2519
2029static void 2520static void
2030coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2521coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2032 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2523 /* call $sem->adjust (0) to possibly wake up some other waiters */
2033 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2524 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2034} 2525}
2035 2526
2036static int 2527static int
2037slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2528slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2038{ 2529{
2039 AV *av = (AV *)frame->data; 2530 AV *av = (AV *)frame->data;
2040 SV *count_sv = AvARRAY (av)[0]; 2531 SV *count_sv = AvARRAY (av)[0];
2041 2532
2533 /* if we are about to throw, don't actually acquire the lock, just throw */
2534 if (CORO_THROW)
2535 return 0;
2042 if (SvIVX (count_sv) > 0) 2536 else if (SvIVX (count_sv) > 0)
2043 { 2537 {
2044 SvSTATE_current->on_destroy = 0; 2538 SvSTATE_current->on_destroy = 0;
2539
2540 if (acquire)
2045 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2541 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2542 else
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2046 return 0; 2545 return 0;
2047 } 2546 }
2048 else 2547 else
2049 { 2548 {
2050 int i; 2549 int i;
… …
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2558 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 return 1; 2559 return 1;
2061 } 2560 }
2062} 2561}
2063 2562
2064static void 2563static int
2564slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2565{
2566 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2567}
2568
2569static int
2570slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2571{
2572 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2573}
2574
2575static void
2065slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2576slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{ 2577{
2067 AV *av = (AV *)SvRV (arg [0]); 2578 AV *av = (AV *)SvRV (arg [0]);
2068 2579
2069 if (SvIVX (AvARRAY (av)[0]) > 0) 2580 if (SvIVX (AvARRAY (av)[0]) > 0)
2070 { 2581 {
2071 frame->data = (void *)av; 2582 frame->data = (void *)av;
2072 frame->prepare = prepare_nop; 2583 frame->prepare = prepare_nop;
2073 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074 } 2584 }
2075 else 2585 else
2076 { 2586 {
2077 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2587 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078 2588
2079 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2589 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080 frame->prepare = prepare_schedule; 2590 frame->prepare = prepare_schedule;
2081 2591
2082 /* to avoid race conditions when a woken-up coro gets terminated */ 2592 /* to avoid race conditions when a woken-up coro gets terminated */
2083 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2593 /* we arrange for a temporary on_destroy that calls adjust (0) */
2084 assert (!SvSTATE_current->on_destroy);//D
2085 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2594 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086 } 2595 }
2596}
2087 2597
2598static void
2599slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2600{
2601 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2088 frame->check = slf_check_semaphore_down; 2602 frame->check = slf_check_semaphore_down;
2603}
2089 2604
2605static void
2606slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2607{
2608 if (items >= 2)
2609 {
2610 /* callback form */
2611 AV *av = (AV *)SvRV (arg [0]);
2612 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2613
2614 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2615
2616 if (SvIVX (AvARRAY (av)[0]) > 0)
2617 coro_semaphore_adjust (aTHX_ av, 0);
2618
2619 frame->prepare = prepare_nop;
2620 frame->check = slf_check_nop;
2621 }
2622 else
2623 {
2624 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2625 frame->check = slf_check_semaphore_wait;
2626 }
2627}
2628
2629/* signal */
2630
2631static void
2632coro_signal_wake (pTHX_ AV *av, int count)
2633{
2634 SvIVX (AvARRAY (av)[0]) = 0;
2635
2636 /* now signal count waiters */
2637 while (count > 0 && AvFILLp (av) > 0)
2638 {
2639 SV *cb;
2640
2641 /* swap first two elements so we can shift a waiter */
2642 cb = AvARRAY (av)[0];
2643 AvARRAY (av)[0] = AvARRAY (av)[1];
2644 AvARRAY (av)[1] = cb;
2645
2646 cb = av_shift (av);
2647
2648 api_ready (aTHX_ cb);
2649 sv_setiv (cb, 0); /* signal waiter */
2650 SvREFCNT_dec (cb);
2651
2652 --count;
2653 }
2654}
2655
2656static int
2657slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2658{
2659 /* if we are about to throw, also stop waiting */
2660 return SvROK ((SV *)frame->data) && !CORO_THROW;
2661}
2662
2663static void
2664slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2665{
2666 AV *av = (AV *)SvRV (arg [0]);
2667
2668 if (SvIVX (AvARRAY (av)[0]))
2669 {
2670 SvIVX (AvARRAY (av)[0]) = 0;
2671 frame->prepare = prepare_nop;
2672 frame->check = slf_check_nop;
2673 }
2674 else
2675 {
2676 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2677
2678 av_push (av, waiter);
2679
2680 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2681 frame->prepare = prepare_schedule;
2682 frame->check = slf_check_signal_wait;
2683 }
2090} 2684}
2091 2685
2092/*****************************************************************************/ 2686/*****************************************************************************/
2687/* Coro::AIO */
2093 2688
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2689#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2095 2690
2096/* create a closure from XS, returns a code reference */ 2691/* helper storage struct */
2097/* the arg can be accessed via GENSUB_ARG from the callback */ 2692struct io_state
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 2693{
2102 CV *cv = (CV *)NEWSV (0, 0); 2694 int errorno;
2695 I32 laststype; /* U16 in 5.10.0 */
2696 int laststatval;
2697 Stat_t statcache;
2698};
2103 2699
2700static void
2701coro_aio_callback (pTHX_ CV *cv)
2702{
2703 dXSARGS;
2704 AV *state = (AV *)GENSUB_ARG;
2705 SV *coro = av_pop (state);
2706 SV *data_sv = newSV (sizeof (struct io_state));
2707
2708 av_extend (state, items - 1);
2709
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 2710 sv_upgrade (data_sv, SVt_PV);
2711 SvCUR_set (data_sv, sizeof (struct io_state));
2712 SvPOK_only (data_sv);
2105 2713
2106 CvANON_on (cv); 2714 {
2107 CvISXSUB_on (cv); 2715 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 2716
2111 return newRV_noinc ((SV *)cv); 2717 data->errorno = errno;
2718 data->laststype = PL_laststype;
2719 data->laststatval = PL_laststatval;
2720 data->statcache = PL_statcache;
2721 }
2722
2723 /* now build the result vector out of all the parameters and the data_sv */
2724 {
2725 int i;
2726
2727 for (i = 0; i < items; ++i)
2728 av_push (state, SvREFCNT_inc_NN (ST (i)));
2729 }
2730
2731 av_push (state, data_sv);
2732
2733 api_ready (aTHX_ coro);
2734 SvREFCNT_dec (coro);
2735 SvREFCNT_dec ((AV *)state);
2736}
2737
2738static int
2739slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2740{
2741 AV *state = (AV *)frame->data;
2742
2743 /* if we are about to throw, return early */
2744 /* this does not cancel the aio request, but at least */
2745 /* it quickly returns */
2746 if (CORO_THROW)
2747 return 0;
2748
2749 /* one element that is an RV? repeat! */
2750 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2751 return 1;
2752
2753 /* restore status */
2754 {
2755 SV *data_sv = av_pop (state);
2756 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2757
2758 errno = data->errorno;
2759 PL_laststype = data->laststype;
2760 PL_laststatval = data->laststatval;
2761 PL_statcache = data->statcache;
2762
2763 SvREFCNT_dec (data_sv);
2764 }
2765
2766 /* push result values */
2767 {
2768 dSP;
2769 int i;
2770
2771 EXTEND (SP, AvFILLp (state) + 1);
2772 for (i = 0; i <= AvFILLp (state); ++i)
2773 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2774
2775 PUTBACK;
2776 }
2777
2778 return 0;
2779}
2780
2781static void
2782slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2783{
2784 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2785 SV *coro_hv = SvRV (coro_current);
2786 struct coro *coro = SvSTATE_hv (coro_hv);
2787
2788 /* put our coroutine id on the state arg */
2789 av_push (state, SvREFCNT_inc_NN (coro_hv));
2790
2791 /* first see whether we have a non-zero priority and set it as AIO prio */
2792 if (coro->prio)
2793 {
2794 dSP;
2795
2796 static SV *prio_cv;
2797 static SV *prio_sv;
2798
2799 if (expect_false (!prio_cv))
2800 {
2801 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2802 prio_sv = newSViv (0);
2803 }
2804
2805 PUSHMARK (SP);
2806 sv_setiv (prio_sv, coro->prio);
2807 XPUSHs (prio_sv);
2808
2809 PUTBACK;
2810 call_sv (prio_cv, G_VOID | G_DISCARD);
2811 }
2812
2813 /* now call the original request */
2814 {
2815 dSP;
2816 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2817 int i;
2818
2819 PUSHMARK (SP);
2820
2821 /* first push all args to the stack */
2822 EXTEND (SP, items + 1);
2823
2824 for (i = 0; i < items; ++i)
2825 PUSHs (arg [i]);
2826
2827 /* now push the callback closure */
2828 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2829
2830 /* now call the AIO function - we assume our request is uncancelable */
2831 PUTBACK;
2832 call_sv ((SV *)req, G_VOID | G_DISCARD);
2833 }
2834
2835 /* now that the requets is going, we loop toll we have a result */
2836 frame->data = (void *)state;
2837 frame->prepare = prepare_schedule;
2838 frame->check = slf_check_aio_req;
2839}
2840
2841static void
2842coro_aio_req_xs (pTHX_ CV *cv)
2843{
2844 dXSARGS;
2845
2846 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2847
2848 XSRETURN_EMPTY;
2112} 2849}
2113 2850
2114/*****************************************************************************/ 2851/*****************************************************************************/
2852
2853#if CORO_CLONE
2854# include "clone.c"
2855#endif
2115 2856
2116MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2857MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2117 2858
2118PROTOTYPES: DISABLE 2859PROTOTYPES: DISABLE
2119 2860
… …
2124 coro_thx = PERL_GET_CONTEXT; 2865 coro_thx = PERL_GET_CONTEXT;
2125# endif 2866# endif
2126#endif 2867#endif
2127 BOOT_PAGESIZE; 2868 BOOT_PAGESIZE;
2128 2869
2870 cctx_current = cctx_new_empty ();
2871
2129 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2872 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2130 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2873 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2131 2874
2132 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2875 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2133 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2876 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2152 2895
2153 { 2896 {
2154 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2897 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155 2898
2156 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2899 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157 hv_store_ent (PL_custom_op_names, slf, 2900 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2158 newSVpv ("coro_slf", 0), 0);
2159 2901
2160 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2902 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161 hv_store_ent (PL_custom_op_descs, slf, 2903 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2162 newSVpv ("coro schedule like function", 0), 0);
2163 } 2904 }
2164 2905
2165 coroapi.ver = CORO_API_VERSION; 2906 coroapi.ver = CORO_API_VERSION;
2166 coroapi.rev = CORO_API_REVISION; 2907 coroapi.rev = CORO_API_REVISION;
2167 2908
… …
2186 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2927 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2187} 2928}
2188 2929
2189SV * 2930SV *
2190new (char *klass, ...) 2931new (char *klass, ...)
2932 ALIAS:
2933 Coro::new = 1
2191 CODE: 2934 CODE:
2192{ 2935{
2193 struct coro *coro; 2936 struct coro *coro;
2194 MAGIC *mg; 2937 MAGIC *mg;
2195 HV *hv; 2938 HV *hv;
2939 CV *cb;
2196 int i; 2940 int i;
2941
2942 if (items > 1)
2943 {
2944 cb = coro_sv_2cv (aTHX_ ST (1));
2945
2946 if (!ix)
2947 {
2948 if (CvISXSUB (cb))
2949 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2950
2951 if (!CvROOT (cb))
2952 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2953 }
2954 }
2197 2955
2198 Newz (0, coro, 1, struct coro); 2956 Newz (0, coro, 1, struct coro);
2199 coro->args = newAV (); 2957 coro->args = newAV ();
2200 coro->flags = CF_NEW; 2958 coro->flags = CF_NEW;
2201 2959
… …
2206 coro->hv = hv = newHV (); 2964 coro->hv = hv = newHV ();
2207 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2965 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208 mg->mg_flags |= MGf_DUP; 2966 mg->mg_flags |= MGf_DUP;
2209 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2967 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2210 2968
2969 if (items > 1)
2970 {
2211 av_extend (coro->args, items - 1); 2971 av_extend (coro->args, items - 1 + ix - 1);
2972
2973 if (ix)
2974 {
2975 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2976 cb = cv_coro_run;
2977 }
2978
2979 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2980
2212 for (i = 1; i < items; i++) 2981 for (i = 2; i < items; i++)
2213 av_push (coro->args, newSVsv (ST (i))); 2982 av_push (coro->args, newSVsv (ST (i)));
2983 }
2214} 2984}
2215 OUTPUT: 2985 OUTPUT:
2216 RETVAL 2986 RETVAL
2217
2218void
2219_set_stacklevel (...)
2220 CODE:
2221 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222 2987
2223void 2988void
2224transfer (...) 2989transfer (...)
2225 PROTOTYPE: $$ 2990 PROTOTYPE: $$
2226 CODE: 2991 CODE:
2227 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2992 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228 2993
2229bool 2994bool
2230_destroy (SV *coro_sv) 2995_destroy (SV *coro_sv)
2231 CODE: 2996 CODE:
2232 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2997 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2236void 3001void
2237_exit (int code) 3002_exit (int code)
2238 PROTOTYPE: $ 3003 PROTOTYPE: $
2239 CODE: 3004 CODE:
2240 _exit (code); 3005 _exit (code);
3006
3007SV *
3008clone (Coro::State coro)
3009 CODE:
3010{
3011#if CORO_CLONE
3012 struct coro *ncoro = coro_clone (aTHX_ coro);
3013 MAGIC *mg;
3014 /* TODO: too much duplication */
3015 ncoro->hv = newHV ();
3016 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3017 mg->mg_flags |= MGf_DUP;
3018 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3019#else
3020 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3021#endif
3022}
3023 OUTPUT:
3024 RETVAL
2241 3025
2242int 3026int
2243cctx_stacksize (int new_stacksize = 0) 3027cctx_stacksize (int new_stacksize = 0)
2244 PROTOTYPE: ;$ 3028 PROTOTYPE: ;$
2245 CODE: 3029 CODE:
… …
2295 eval = 1 3079 eval = 1
2296 CODE: 3080 CODE:
2297{ 3081{
2298 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3082 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2299 { 3083 {
2300 struct coro temp; 3084 struct coro *current = SvSTATE_current;
2301 3085
2302 if (!(coro->flags & CF_RUNNING)) 3086 if (current != coro)
2303 { 3087 {
2304 PUTBACK; 3088 PUTBACK;
2305 save_perl (aTHX_ &temp); 3089 save_perl (aTHX_ current);
2306 load_perl (aTHX_ coro); 3090 load_perl (aTHX_ coro);
3091 SPAGAIN;
2307 } 3092 }
2308 3093
2309 {
2310 dSP;
2311 ENTER;
2312 SAVETMPS;
2313 PUTBACK;
2314 PUSHSTACK; 3094 PUSHSTACK;
3095
2315 PUSHMARK (SP); 3096 PUSHMARK (SP);
3097 PUTBACK;
2316 3098
2317 if (ix) 3099 if (ix)
2318 eval_sv (coderef, 0); 3100 eval_sv (coderef, 0);
2319 else 3101 else
2320 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3102 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2321 3103
2322 POPSTACK; 3104 POPSTACK;
2323 SPAGAIN; 3105 SPAGAIN;
2324 FREETMPS;
2325 LEAVE;
2326 PUTBACK;
2327 }
2328 3106
2329 if (!(coro->flags & CF_RUNNING)) 3107 if (current != coro)
2330 { 3108 {
3109 PUTBACK;
2331 save_perl (aTHX_ coro); 3110 save_perl (aTHX_ coro);
2332 load_perl (aTHX_ &temp); 3111 load_perl (aTHX_ current);
2333 SPAGAIN; 3112 SPAGAIN;
2334 } 3113 }
2335 } 3114 }
2336} 3115}
2337 3116
… …
2341 ALIAS: 3120 ALIAS:
2342 is_ready = CF_READY 3121 is_ready = CF_READY
2343 is_running = CF_RUNNING 3122 is_running = CF_RUNNING
2344 is_new = CF_NEW 3123 is_new = CF_NEW
2345 is_destroyed = CF_DESTROYED 3124 is_destroyed = CF_DESTROYED
3125 is_suspended = CF_SUSPENDED
2346 CODE: 3126 CODE:
2347 RETVAL = boolSV (coro->flags & ix); 3127 RETVAL = boolSV (coro->flags & ix);
2348 OUTPUT: 3128 OUTPUT:
2349 RETVAL 3129 RETVAL
2350 3130
2351void 3131void
2352throw (Coro::State self, SV *throw = &PL_sv_undef) 3132throw (Coro::State self, SV *throw = &PL_sv_undef)
2353 PROTOTYPE: $;$ 3133 PROTOTYPE: $;$
2354 CODE: 3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
2355 SvREFCNT_dec (self->throw); 3138 SvREFCNT_dec (*throwp);
2356 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
2357 3141
2358void 3142void
2359api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360 PROTOTYPE: $;$ 3144 PROTOTYPE: $;$
2361 C_ARGS: aTHX_ coro, flags 3145 C_ARGS: aTHX_ coro, flags
2362 3146
2363SV * 3147SV *
2364has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2365 PROTOTYPE: $ 3149 PROTOTYPE: $
2366 CODE: 3150 CODE:
2367 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2368 OUTPUT: 3153 OUTPUT:
2369 RETVAL 3154 RETVAL
2370 3155
2371int 3156int
2372is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2392 3177
2393void 3178void
2394force_cctx () 3179force_cctx ()
2395 PROTOTYPE: 3180 PROTOTYPE:
2396 CODE: 3181 CODE:
2397 SvSTATE_current->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2398 3183
2399void 3184void
2400swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2401 PROTOTYPE: $ 3186 PROTOTYPE: $
2402 ALIAS: 3187 ALIAS:
… …
2410 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411 3196
2412 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2413 } 3198 }
2414 3199
3200void
3201cancel (Coro::State self)
3202 CODE:
3203 coro_state_destroy (aTHX_ self);
3204 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3205
3206
2415MODULE = Coro::State PACKAGE = Coro 3207MODULE = Coro::State PACKAGE = Coro
2416 3208
2417BOOT: 3209BOOT:
2418{ 3210{
2419 int i; 3211 int i;
2420 3212
2421 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3213 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3214 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2424 3215 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3216 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2425 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3217 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2426 SvREADONLY_on (coro_current); 3218 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3219 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3220 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3221 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3222
3223 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3224 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3225 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3226 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2427 3227
2428 coro_stash = gv_stashpv ("Coro", TRUE); 3228 coro_stash = gv_stashpv ("Coro", TRUE);
2429 3229
2430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3230 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3231 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2439 3239
2440 { 3240 {
2441 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3241 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2442 3242
2443 coroapi.schedule = api_schedule; 3243 coroapi.schedule = api_schedule;
3244 coroapi.schedule_to = api_schedule_to;
2444 coroapi.cede = api_cede; 3245 coroapi.cede = api_cede;
2445 coroapi.cede_notself = api_cede_notself; 3246 coroapi.cede_notself = api_cede_notself;
2446 coroapi.ready = api_ready; 3247 coroapi.ready = api_ready;
2447 coroapi.is_ready = api_is_ready; 3248 coroapi.is_ready = api_is_ready;
2448 coroapi.nready = coro_nready; 3249 coroapi.nready = coro_nready;
2449 coroapi.current = coro_current; 3250 coroapi.current = coro_current;
2450 3251
2451 GCoroAPI = &coroapi; 3252 /*GCoroAPI = &coroapi;*/
2452 sv_setiv (sv, (IV)&coroapi); 3253 sv_setiv (sv, (IV)&coroapi);
2453 SvREADONLY_on (sv); 3254 SvREADONLY_on (sv);
2454 } 3255 }
2455} 3256}
2456 3257
2457void 3258void
3259terminate (...)
3260 CODE:
3261 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3262
3263void
2458schedule (...) 3264schedule (...)
2459 CODE: 3265 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3266 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3267
3268void
3269schedule_to (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3272
3273void
3274cede_to (...)
3275 CODE:
3276 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2461 3277
2462void 3278void
2463cede (...) 3279cede (...)
2464 CODE: 3280 CODE:
2465 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3281 CORO_EXECUTE_SLF_XS (slf_init_cede);
2466 3282
2467void 3283void
2468cede_notself (...) 3284cede_notself (...)
2469 CODE: 3285 CODE:
2470 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3286 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2471 3287
2472void 3288void
2473_set_current (SV *current) 3289_set_current (SV *current)
2474 PROTOTYPE: $ 3290 PROTOTYPE: $
2475 CODE: 3291 CODE:
… …
2520 CODE: 3336 CODE:
2521 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2522 OUTPUT: 3338 OUTPUT:
2523 RETVAL 3339 RETVAL
2524 3340
2525# for async_pool speedup
2526void 3341void
2527_pool_1 (SV *cb) 3342suspend (Coro::State self)
3343 PROTOTYPE: $
2528 CODE: 3344 CODE:
2529{ 3345 self->flags |= CF_SUSPENDED;
2530 HV *hv = (HV *)SvRV (coro_current);
2531 struct coro *coro = SvSTATE_hv ((SV *)hv);
2532 AV *defav = GvAV (PL_defgv);
2533 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2534 AV *invoke_av;
2535 int i, len;
2536
2537 if (!invoke)
2538 {
2539 SV *old = PL_diehook;
2540 PL_diehook = 0;
2541 SvREFCNT_dec (old);
2542 croak ("\3async_pool terminate\2\n");
2543 }
2544
2545 SvREFCNT_dec (coro->saved_deffh);
2546 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2547
2548 hv_store (hv, "desc", sizeof ("desc") - 1,
2549 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2550
2551 invoke_av = (AV *)SvRV (invoke);
2552 len = av_len (invoke_av);
2553
2554 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2555
2556 if (len > 0)
2557 {
2558 av_fill (defav, len - 1);
2559 for (i = 0; i < len; ++i)
2560 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2561 }
2562}
2563 3346
2564void 3347void
2565_pool_2 (SV *cb) 3348resume (Coro::State self)
3349 PROTOTYPE: $
2566 CODE: 3350 CODE:
2567{ 3351 self->flags &= ~CF_SUSPENDED;
2568 struct coro *coro = SvSTATE_current;
2569
2570 sv_setsv (cb, &PL_sv_undef);
2571
2572 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2573 coro->saved_deffh = 0;
2574
2575 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2576 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2577 {
2578 SV *old = PL_diehook;
2579 PL_diehook = 0;
2580 SvREFCNT_dec (old);
2581 croak ("\3async_pool terminate\2\n");
2582 }
2583
2584 av_clear (GvAV (PL_defgv));
2585 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2586 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2587
2588 coro->prio = 0;
2589
2590 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2591 api_trace (aTHX_ coro_current, 0);
2592
2593 av_push (av_async_pool, newSVsv (coro_current));
2594}
2595
2596
2597MODULE = Coro::State PACKAGE = Coro::AIO
2598 3352
2599void 3353void
2600_get_state (SV *self) 3354_pool_handler (...)
3355 CODE:
3356 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3357
3358void
3359async_pool (SV *cv, ...)
2601 PROTOTYPE: $ 3360 PROTOTYPE: &@
2602 PPCODE: 3361 PPCODE:
2603{ 3362{
2604 AV *defav = GvAV (PL_defgv); 3363 HV *hv = (HV *)av_pop (av_async_pool);
2605 AV *av = newAV (); 3364 AV *av = newAV ();
3365 SV *cb = ST (0);
2606 int i; 3366 int i;
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2609 SvCUR_set (data_sv, sizeof (struct io_state));
2610 SvPOK_only (data_sv);
2611 3367
2612 data->errorno = errno; 3368 av_extend (av, items - 2);
2613 data->laststype = PL_laststype; 3369 for (i = 1; i < items; ++i)
2614 data->laststatval = PL_laststatval;
2615 data->statcache = PL_statcache;
2616
2617 av_extend (av, AvFILLp (defav) + 1 + 1);
2618
2619 for (i = 0; i <= AvFILLp (defav); ++i)
2620 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3370 av_push (av, SvREFCNT_inc_NN (ST (i)));
2621 3371
2622 av_push (av, data_sv); 3372 if ((SV *)hv == &PL_sv_undef)
2623
2624 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626 api_ready (aTHX_ self);
2627}
2628
2629void
2630_set_state (SV *state)
2631 PROTOTYPE: $
2632 PPCODE:
2633{
2634 AV *av = (AV *)SvRV (state);
2635 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636 int i;
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 EXTEND (SP, AvFILLp (av));
2644 for (i = 0; i < AvFILLp (av); ++i)
2645 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646}
2647
2648
2649MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651BOOT:
2652 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654void
2655_schedule (...)
2656 CODE:
2657{
2658 static int incede;
2659
2660 api_cede_notself (aTHX);
2661
2662 ++incede;
2663 while (coro_nready >= incede && api_cede (aTHX))
2664 ;
2665
2666 sv_setsv (sv_activity, &PL_sv_undef);
2667 if (coro_nready >= incede)
2668 { 3373 {
2669 PUSHMARK (SP); 3374 PUSHMARK (SP);
3375 EXTEND (SP, 2);
3376 PUSHs (sv_Coro);
3377 PUSHs ((SV *)cv_pool_handler);
2670 PUTBACK; 3378 PUTBACK;
2671 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3379 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2672 SPAGAIN; 3380 SPAGAIN;
3381
3382 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2673 } 3383 }
2674 3384
2675 --incede; 3385 {
3386 struct coro *coro = SvSTATE_hv (hv);
3387
3388 assert (!coro->invoke_cb);
3389 assert (!coro->invoke_av);
3390 coro->invoke_cb = SvREFCNT_inc (cb);
3391 coro->invoke_av = av;
3392 }
3393
3394 api_ready (aTHX_ (SV *)hv);
3395
3396 if (GIMME_V != G_VOID)
3397 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3398 else
3399 SvREFCNT_dec (hv);
3400}
3401
3402SV *
3403rouse_cb ()
3404 PROTOTYPE:
3405 CODE:
3406 RETVAL = coro_new_rouse_cb (aTHX);
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411rouse_wait (...)
3412 PROTOTYPE: ;$
3413 PPCODE:
3414 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3415
3416void
3417on_enter (SV *block)
3418 ALIAS:
3419 on_leave = 1
3420 PROTOTYPE: &
3421 CODE:
3422{
3423 struct coro *coro = SvSTATE_current;
3424 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3425
3426 block = (SV *)coro_sv_2cv (aTHX_ block);
3427
3428 if (!*avp)
3429 *avp = newAV ();
3430
3431 av_push (*avp, SvREFCNT_inc (block));
3432
3433 if (!ix)
3434 on_enterleave_call (aTHX_ block);
3435
3436 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3437 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3438 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2676} 3439}
2677 3440
2678 3441
2679MODULE = Coro::State PACKAGE = PerlIO::cede 3442MODULE = Coro::State PACKAGE = PerlIO::cede
2680 3443
2681BOOT: 3444BOOT:
2682 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3445 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683 3446
3447
2684MODULE = Coro::State PACKAGE = Coro::Semaphore 3448MODULE = Coro::State PACKAGE = Coro::Semaphore
2685 3449
2686SV * 3450SV *
2687new (SV *klass, SV *count_ = 0) 3451new (SV *klass, SV *count = 0)
2688 CODE: 3452 CODE:
2689{ 3453 RETVAL = sv_bless (
2690 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3454 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2691 AV *av = newAV (); 3455 GvSTASH (CvGV (cv))
2692 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3456 );
2693 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3457 OUTPUT:
2694} 3458 RETVAL
3459
3460# helper for Coro::Channel and others
3461SV *
3462_alloc (int count)
3463 CODE:
3464 RETVAL = coro_waitarray_new (aTHX_ count);
2695 OUTPUT: 3465 OUTPUT:
2696 RETVAL 3466 RETVAL
2697 3467
2698SV * 3468SV *
2699count (SV *self) 3469count (SV *self)
… …
2708 adjust = 1 3478 adjust = 1
2709 CODE: 3479 CODE:
2710 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3480 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711 3481
2712void 3482void
2713down (SV *self) 3483down (...)
2714 CODE: 3484 CODE:
2715 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3485 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3486
3487void
3488wait (...)
3489 CODE:
3490 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2716 3491
2717void 3492void
2718try (SV *self) 3493try (SV *self)
2719 PPCODE: 3494 PPCODE:
2720{ 3495{
… …
2732 XSRETURN_NO; 3507 XSRETURN_NO;
2733} 3508}
2734 3509
2735void 3510void
2736waiters (SV *self) 3511waiters (SV *self)
2737 CODE: 3512 PPCODE:
2738{ 3513{
2739 AV *av = (AV *)SvRV (self); 3514 AV *av = (AV *)SvRV (self);
3515 int wcount = AvFILLp (av) + 1 - 1;
2740 3516
2741 if (GIMME_V == G_SCALAR) 3517 if (GIMME_V == G_SCALAR)
2742 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3518 XPUSHs (sv_2mortal (newSViv (wcount)));
2743 else 3519 else
2744 { 3520 {
2745 int i; 3521 int i;
2746 EXTEND (SP, AvFILLp (av) + 1 - 1); 3522 EXTEND (SP, wcount);
2747 for (i = 1; i <= AvFILLp (av); ++i) 3523 for (i = 1; i <= wcount; ++i)
2748 PUSHs (newSVsv (AvARRAY (av)[i])); 3524 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749 } 3525 }
2750} 3526}
2751 3527
3528MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3529
3530void
3531_may_delete (SV *sem, int count, int extra_refs)
3532 PPCODE:
3533{
3534 AV *av = (AV *)SvRV (sem);
3535
3536 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3537 && AvFILLp (av) == 0 /* no waiters, just count */
3538 && SvIV (AvARRAY (av)[0]) == count)
3539 XSRETURN_YES;
3540
3541 XSRETURN_NO;
3542}
3543
3544MODULE = Coro::State PACKAGE = Coro::Signal
3545
3546SV *
3547new (SV *klass)
3548 CODE:
3549 RETVAL = sv_bless (
3550 coro_waitarray_new (aTHX_ 0),
3551 GvSTASH (CvGV (cv))
3552 );
3553 OUTPUT:
3554 RETVAL
3555
3556void
3557wait (...)
3558 CODE:
3559 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3560
3561void
3562broadcast (SV *self)
3563 CODE:
3564{
3565 AV *av = (AV *)SvRV (self);
3566 coro_signal_wake (aTHX_ av, AvFILLp (av));
3567}
3568
3569void
3570send (SV *self)
3571 CODE:
3572{
3573 AV *av = (AV *)SvRV (self);
3574
3575 if (AvFILLp (av))
3576 coro_signal_wake (aTHX_ av, 1);
3577 else
3578 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3579}
3580
3581IV
3582awaited (SV *self)
3583 CODE:
3584 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3585 OUTPUT:
3586 RETVAL
3587
3588
3589MODULE = Coro::State PACKAGE = Coro::AnyEvent
3590
3591BOOT:
3592 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3593
3594void
3595_schedule (...)
3596 CODE:
3597{
3598 static int incede;
3599
3600 api_cede_notself (aTHX);
3601
3602 ++incede;
3603 while (coro_nready >= incede && api_cede (aTHX))
3604 ;
3605
3606 sv_setsv (sv_activity, &PL_sv_undef);
3607 if (coro_nready >= incede)
3608 {
3609 PUSHMARK (SP);
3610 PUTBACK;
3611 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3612 }
3613
3614 --incede;
3615}
3616
3617
3618MODULE = Coro::State PACKAGE = Coro::AIO
3619
3620void
3621_register (char *target, char *proto, SV *req)
3622 CODE:
3623{
3624 CV *req_cv = coro_sv_2cv (aTHX_ req);
3625 /* newXSproto doesn't return the CV on 5.8 */
3626 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3627 sv_setpv ((SV *)slf_cv, proto);
3628 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3629}
3630

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