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Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC vs.
Revision 1.345 by root, Wed Dec 17 04:57:07 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
172 181
173static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 184static SV *rv_diehook;
176static SV *rv_warnhook; 185static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
178 187
179/* async_pool helper stuff */ 188/* async_pool helper stuff */
180static SV *sv_pool_rss; 189static SV *sv_pool_rss;
181static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
183 196
184/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
185static SV *sv_activity; 198static SV *sv_activity;
186 199
187static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 229 int valgrind_id;
217#endif 230#endif
218 unsigned char flags; 231 unsigned char flags;
219} coro_cctx; 232} coro_cctx;
220 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
221enum { 238enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
226}; 244};
227 245
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 247typedef struct
230{ 248{
231 SV *defsv; 249 SV *defsv;
232 AV *defav; 250 AV *defav;
233 SV *errsv; 251 SV *errsv;
234 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
235#define VAR(name,type) type name; 254#define VAR(name,type) type name;
236# include "state.h" 255# include "state.h"
237#undef VAR 256#undef VAR
238} perl_slots; 257} perl_slots;
239 258
… …
242/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
243struct coro { 262struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 264 coro_cctx *cctx;
246 265
247 /* process data */ 266 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 267 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 268 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
251 270
271 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 276 void (*on_destroy)(pTHX_ struct coro *coro);
257 277
258 /* statistics */ 278 /* statistics */
259 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
260 280
261 /* coro process data */ 281 /* coro process data */
262 int prio; 282 int prio;
263 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
264 285
265 /* async_pool */ 286 /* async_pool */
266 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;
267 294
268 /* linked list */ 295 /* linked list */
269 struct coro *next, *prev; 296 struct coro *next, *prev;
270}; 297};
271 298
272typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
274 301
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 */
275static struct CoroSLF slf_frame; /* the current slf frame */ 305static struct CoroSLF slf_frame; /* the current slf frame */
276 306
277/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
278 308
279#define PRIO_MAX 3 309#define PRIO_MAX 3
… …
285 315
286/* for Coro.pm */ 316/* for Coro.pm */
287static SV *coro_current; 317static SV *coro_current;
288static SV *coro_readyhook; 318static SV *coro_readyhook;
289static 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;
290static struct coro *coro_first; 321static struct coro *coro_first;
291#define coro_nready coroapi.nready 322#define coro_nready coroapi.nready
292 323
293/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
294 325
… …
320 get_hv (name, create); 351 get_hv (name, create);
321#endif 352#endif
322 return get_hv (name, create); 353 return get_hv (name, create);
323} 354}
324 355
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
325static AV * 422static AV *
326coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
327{ 424{
328 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
330 427
331 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 434#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist); 436 --AvFILLp (padlist);
340 437
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
342 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
343 440
344 return newpadlist; 441 return newpadlist;
345} 442}
346 443
347static void 444static void
348free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
349{ 446{
350 /* may be during global destruction */ 447 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
352 { 449 {
353 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
354 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
355 { 453 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
357 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
358 { 456 I32 j = AvFILLp (av);
359 SV *sv; 457
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
361 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
362
363 SvREFCNT_dec (*svp);
364 }
365 } 463 }
366 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
367 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
368 } 469 }
369} 470}
370 471
371static int 472static int
… …
380 481
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 483
383 return 0; 484 return 0;
384} 485}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 486
389static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 488 0, 0, 0, 0,
391 coro_cv_free 489 coro_cv_free
392}; 490};
393
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442 491
443/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
444static void 493static void
445get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
446{ 495{
… …
452 else 501 else
453 { 502 {
454#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
461#else 510#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 512#endif
464 } 513 }
465} 514}
466 515
467static void 516static void
… …
474 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);
475 524
476 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
477 526
478 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
480 529
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 531}
483 532
484/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
485 537
486static void 538static void
487load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
488{ 540{
489 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
490 c->slot = 0; 542 c->slot = 0;
491 543
492 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
493 545
494 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
495 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
496 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
497 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
498 551
499 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
500 # include "state.h" 553 # include "state.h"
501 #undef VAR 554 #undef VAR
502 555
… …
514 } 567 }
515 568
516 PUTBACK; 569 PUTBACK;
517 } 570 }
518 571
519 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 }
520} 582}
521 583
522static void 584static void
523save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
524{ 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;
525 c->slf_frame = slf_frame; 596 c->slf_frame = slf_frame;
526 597
527 { 598 {
528 dSP; 599 dSP;
529 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
… …
586 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
587 658
588 { 659 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 661
591 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
592 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
593 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
594 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
595 667
596 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
597 # include "state.h" 669 # include "state.h"
598 #undef VAR 670 #undef VAR
599 } 671 }
… …
604 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
607 */ 679 */
608#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
610#else 682#else
611static void 683static void
612coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
613{ 685{
614 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
677#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 750 Safefree (PL_retstack);
679#endif 751#endif
680} 752}
681 753
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
682static size_t 763static size_t
683coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
684{ 765{
685 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
686 767
687 if (coro->mainstack) 768 if (coro->mainstack)
688 { 769 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
693 { 771 {
694 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
695 773 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 774 #undef SYM
699 } 775 }
700 else 776 else
701 slot = coro->slot;
702
703 if (slot)
704 { 777 {
705 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 781 }
717 } 782 }
718 783
719 return rss; 784 return rss;
720} 785}
… …
733#endif 798#endif
734 799
735/* 800/*
736 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
739 * readback here. 804 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 805 */
744static int 806static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 808{
747 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801 863
802 if (svp) 864 if (svp)
803 { 865 {
804 SV *old = *svp; 866 SV *old = *svp;
805 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
807 return 0; 869 return 0;
808 } 870 }
809 } 871 }
810 872
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 884slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 885{
824 return 0; 886 return 0;
825} 887}
826 888
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
829{ 899{
830 /* 900 /*
831 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
832 */ 902 */
… …
834 904
835 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 912 PL_curpm = 0;
840 PL_curpad = 0; 913 PL_curpad = 0;
841 PL_localizing = 0; 914 PL_localizing = 0;
842 PL_dirty = 0; 915 PL_dirty = 0;
843 PL_restartop = 0; 916 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 918 PL_parser = 0;
846#endif 919#endif
920 PL_hints = 0;
847 921
848 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
849 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 );
850 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);
851 925
852 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 933
859 { 934 {
860 dSP; 935 dSP;
861 UNOP myop; 936 UNOP myop;
862 937
863 Zero (&myop, 1, UNOP); 938 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
866 942
867 PUSHMARK (SP); 943 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 945 PUTBACK;
870 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 948 }
874 949
875 /* 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
876 * 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.
877 */ 952 */
878 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 */
879 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 */
880}
881 955
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
882static void 968static void
883coro_destruct (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
884{ 970{
885 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
886 { 972 {
887 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
897 983
898 /* unwind main stack */ 984 /* unwind main stack */
899 dounwind (-1); 985 dounwind (-1);
900 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
901 993
902 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
908 1001
909 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
911 1004
912 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
914 1009
915 coro_destruct_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
916} 1011}
917 1012
918INLINE void 1013INLINE void
… …
928static int 1023static int
929runops_trace (pTHX) 1024runops_trace (pTHX)
930{ 1025{
931 COP *oldcop = 0; 1026 COP *oldcop = 0;
932 int oldcxix = -2; 1027 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1028
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1030 {
938 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
939 1032
940 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1034 {
942 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)
943 { 1036 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1038 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
947 SV **cb; 1040 SV **cb;
… …
984 1077
985 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
986 { 1079 {
987 SV **cb; 1080 SV **cb;
988 1081
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1083 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1085
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1087 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1088 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
999 1091
1000 if (isGV (gv)) 1092 if (isGV (gv))
… …
1005 SAVETMPS; 1097 SAVETMPS;
1006 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1099 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1101 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1103 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1106 SPAGAIN;
1015 FREETMPS; 1107 FREETMPS;
… …
1018 } 1110 }
1019 1111
1020 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
1021 } 1113 }
1022 1114
1023 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1116 {
1025 dSP; 1117 dSP;
1026 1118
1027 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1120 ENTER;
… …
1047 1139
1048 TAINT_NOT; 1140 TAINT_NOT;
1049 return 0; 1141 return 0;
1050} 1142}
1051 1143
1144static struct CoroSLF cctx_ssl_frame;
1145
1052static void 1146static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1148{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1149 ta->prev = 0;
1057} 1150}
1058 1151
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1152static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1154{
1062/* 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 */
1063static void NOINLINE 1161static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1065{ 1163{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1070 1165
1071 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1073 1168
1074 Zero (&myop, 1, UNOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1076 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));
1077 1173
1078 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1176
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1179}
1087 1180
1088/* 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 */
1089INLINE void 1182INLINE void
1090transfer_tail (pTHX) 1183transfer_tail (pTHX)
1091{ 1184{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1185 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106} 1186}
1107 1187
1108/* 1188/*
1109 * this is a _very_ stripped down perl interpreter ;) 1189 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1190 */
… …
1122 /* normally we would need to skip the entersub here */ 1202 /* normally we would need to skip the entersub here */
1123 /* 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 */
1124 /* PL_nop = PL_nop->op_next */ 1204 /* PL_nop = PL_nop->op_next */
1125 1205
1126 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1128 1208
1129 /* cctx_run is the alternative tail of transfer() */ 1209 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1210 transfer_tail (aTHX);
1132 1211
1133 /* 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 */
1134 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1135 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 */
1136 1219
1137 /* 1220 /*
1138 * 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
1139 * 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)
1140 * 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
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1142 * 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.
1143 */ 1228 */
1144 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1145 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 */
1146 } 1231 }
1147} 1232}
… …
1224cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1225{ 1310{
1226 if (!cctx) 1311 if (!cctx)
1227 return; 1312 return;
1228 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1229 --cctx_count; 1316 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1317 coro_destroy (&cctx->cctx);
1231 1318
1232 /* coro_transfer creates new, empty cctx's */ 1319 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr) 1320 if (cctx->sptr)
… …
1291/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1292 1379
1293static void 1380static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1296 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1297 { 1386 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1389
1301 if (expect_false (next->flags & CF_RUNNING))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1392
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1396#endif
1311 } 1397 }
1312} 1398}
1313 1399
1314/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1315static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1403{
1318 dSTACKLEVEL; 1404 dSTACKLEVEL;
1319 1405
1320 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1407 if (expect_false (!prev))
1322 { 1408 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1409 cctx_current->idle_sp = STACKLEVEL;
1324 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 */
1325 } 1411 }
1326 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1327 { 1413 {
1328 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1329 1415
1330 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1331 { 1417 {
1332 /* create a new empty/source context */ 1418 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1336 } 1421 }
1337 1422
1338 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
… …
1349 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1350 } 1435 }
1351 else 1436 else
1352 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1353 1438
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1439 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1440 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1441 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1443 && !force_cctx
1361 )) 1444 ))
1362 { 1445 {
1363 /* 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 */
1364 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));
1365 1448
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1449 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1373 1454
1374 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1375 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1376 1459
1377 ++next->usecount; 1460 ++next->usecount;
1378 1461
1379 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1464
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1465 next->cctx = 0;
1383 transfer_next = next;
1384 1466
1385 if (expect_false (prev__cctx != next->cctx)) 1467 if (expect_false (cctx_prev != cctx_current))
1386 { 1468 {
1387 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1472 }
1391 1473
1392 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1393 } 1475 }
1394} 1476}
… …
1402coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1485{
1404 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1405 return 0; 1487 return 0;
1406 1488
1407 if (coro->on_destroy) 1489 if (coro->on_destroy && !PL_dirty)
1408 coro->on_destroy (aTHX_ coro); 1490 coro->on_destroy (aTHX_ coro);
1409 1491
1410 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1411 1493
1412 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
… …
1416 --coro_nready; 1498 --coro_nready;
1417 } 1499 }
1418 else 1500 else
1419 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 */
1420 1502
1421 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1422 { 1507 {
1423 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1424 1509
1425 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));
1426 1511
1427 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1428 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1429 1514
1430 coro_destruct (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1431 1516
1432 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1433 1518
1434 coro->slot = 0; 1519 coro->slot = 0;
1435 } 1520 }
1436 1521
1437 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1438 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1439 1526
1440 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1443 1530
… …
1497 1584
1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1500} 1587}
1501 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
1502/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1503 1613
1504INLINE void 1614INLINE void
1505coro_enq (pTHX_ struct coro *coro) 1615coro_enq (pTHX_ struct coro *coro)
1506{ 1616{
… …
1524{ 1634{
1525 struct coro *coro; 1635 struct coro *coro;
1526 SV *sv_hook; 1636 SV *sv_hook;
1527 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1528 1638
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1533 1640
1534 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1535 return 0; 1642 return 0;
1536 1643
… …
1549 ENTER; 1656 ENTER;
1550 SAVETMPS; 1657 SAVETMPS;
1551 1658
1552 PUSHMARK (SP); 1659 PUSHMARK (SP);
1553 PUTBACK; 1660 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1555 SPAGAIN;
1556 1662
1557 FREETMPS; 1663 FREETMPS;
1558 LEAVE; 1664 LEAVE;
1559 } 1665 }
1560 1666
… …
1568api_is_ready (pTHX_ SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1569{ 1675{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1677}
1572 1678
1679/* expects to own a reference to next->hv */
1573INLINE void 1680INLINE void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1682{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1683 SV *prev_sv = SvRV (coro_current);
1684
1616 ta->prev = SvSTATE_hv (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1617 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1689
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1621 1691
1622 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1624} 1694}
1625 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
1626INLINE void 1747INLINE void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 1749{
1629 api_ready (aTHX_ coro_current); 1750 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 1751 prepare_schedule (aTHX_ ta);
… …
1649{ 1770{
1650 struct coro_transfer_args ta; 1771 struct coro_transfer_args ta;
1651 1772
1652 prepare_schedule (aTHX_ &ta); 1773 prepare_schedule (aTHX_ &ta);
1653 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);
1654} 1785}
1655 1786
1656static int 1787static int
1657api_cede (pTHX) 1788api_cede (pTHX)
1658{ 1789{
… …
1687static void 1818static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 1820{
1690 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1691 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1692 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1693 { 1827 {
1694 if (!coro->cctx) 1828 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 1829 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 1832
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 1834 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 1836 {
… …
1705 if (coro->flags & CF_RUNNING) 1839 if (coro->flags & CF_RUNNING)
1706 PL_runops = RUNOPS_DEFAULT; 1840 PL_runops = RUNOPS_DEFAULT;
1707 else 1841 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 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 AV *av = newAV ();
1994 SV *coro = SvRV (data);
1995
1996 SvRV_set (data, (SV *)av);
1997 api_ready (aTHX_ coro);
1998 SvREFCNT_dec (coro);
1999
2000 /* better take a full copy of the arguments */
2001 while (items--)
2002 av_store (av, items, newSVsv (ST (items)));
2003 }
2004
2005 XSRETURN_EMPTY;
2006}
2007
2008static int
2009slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2010{
2011 SV *data = (SV *)frame->data;
2012
2013 if (CORO_THROW)
2014 return 0;
2015
2016 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2017 return 1;
2018
2019 /* now push all results on the stack */
2020 {
2021 dSP;
2022 AV *av = (AV *)SvRV (data);
2023 int i;
2024
2025 EXTEND (SP, AvFILLp (av) + 1);
2026 for (i = 0; i <= AvFILLp (av); ++i)
2027 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2028
2029 /* we have stolen the elements, so ste length to zero and free */
2030 AvFILLp (av) = -1;
2031 av_undef (av);
2032
2033 PUTBACK;
2034 }
2035
2036 return 0;
2037}
2038
2039static void
2040slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2041{
2042 SV *cb;
2043
2044 if (items)
2045 cb = arg [0];
2046 else
2047 {
2048 struct coro *coro = SvSTATE_current;
2049
2050 if (!coro->rouse_cb)
2051 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2052
2053 cb = sv_2mortal (coro->rouse_cb);
2054 coro->rouse_cb = 0;
2055 }
2056
2057 if (!SvROK (cb)
2058 || SvTYPE (SvRV (cb)) != SVt_PVCV
2059 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2060 croak ("Coro::rouse_wait called with illegal callback argument,");
2061
2062 {
2063 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2064 SV *data = (SV *)GENSUB_ARG;
2065
2066 frame->data = (void *)data;
2067 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2068 frame->check = slf_check_rouse_wait;
2069 }
2070}
2071
2072static SV *
2073coro_new_rouse_cb (pTHX)
2074{
2075 HV *hv = (HV *)SvRV (coro_current);
2076 struct coro *coro = SvSTATE_hv (hv);
2077 SV *data = newRV_inc ((SV *)hv);
2078 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2079
2080 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2081 SvREFCNT_dec (data); /* magicext increases the refcount */
2082
2083 SvREFCNT_dec (coro->rouse_cb);
2084 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2085
2086 return cb;
2087}
2088
2089/*****************************************************************************/
2090/* schedule-like-function opcode (SLF) */
2091
2092static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2093static const CV *slf_cv;
2094static SV **slf_argv;
2095static int slf_argc, slf_arga; /* count, allocated */
2096static I32 slf_ax; /* top of stack, for restore */
2097
2098/* this restores the stack in the case we patched the entersub, to */
2099/* recreate the stack frame as perl will on following calls */
2100/* since entersub cleared the stack */
2101static OP *
2102pp_restore (pTHX)
2103{
2104 int i;
2105 SV **SP = PL_stack_base + slf_ax;
2106
2107 PUSHMARK (SP);
2108
2109 EXTEND (SP, slf_argc + 1);
2110
2111 for (i = 0; i < slf_argc; ++i)
2112 PUSHs (sv_2mortal (slf_argv [i]));
2113
2114 PUSHs ((SV *)CvGV (slf_cv));
2115
2116 RETURNOP (slf_restore.op_first);
2117}
2118
2119static void
2120slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2121{
2122 SV **arg = (SV **)slf_frame.data;
2123
2124 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2125}
2126
2127static void
2128slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 if (items != 2)
2131 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2132
2133 frame->prepare = slf_prepare_transfer;
2134 frame->check = slf_check_nop;
2135 frame->data = (void *)arg; /* let's hope it will stay valid */
2136}
2137
2138static void
2139slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2140{
2141 frame->prepare = prepare_schedule;
2142 frame->check = slf_check_nop;
2143}
2144
2145static void
2146slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2147{
2148 struct coro *next = (struct coro *)slf_frame.data;
2149
2150 SvREFCNT_inc_NN (next->hv);
2151 prepare_schedule_to (aTHX_ ta, next);
2152}
2153
2154static void
2155slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 if (!items)
2158 croak ("Coro::schedule_to expects a coroutine argument, caught");
2159
2160 frame->data = (void *)SvSTATE (arg [0]);
2161 frame->prepare = slf_prepare_schedule_to;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2167{
2168 api_ready (aTHX_ SvRV (coro_current));
2169
2170 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2171}
2172
2173static void
2174slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 frame->prepare = prepare_cede;
2177 frame->check = slf_check_nop;
2178}
2179
2180static void
2181slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2182{
2183 frame->prepare = prepare_cede_notself;
2184 frame->check = slf_check_nop;
2185}
2186
2187/*
2188 * these not obviously related functions are all rolled into one
2189 * function to increase chances that they all will call transfer with the same
2190 * stack offset
2191 * SLF stands for "schedule-like-function".
2192 */
2193static OP *
2194pp_slf (pTHX)
2195{
2196 I32 checkmark; /* mark SP to see how many elements check has pushed */
2197
2198 /* set up the slf frame, unless it has already been set-up */
2199 /* the latter happens when a new coro has been started */
2200 /* or when a new cctx was attached to an existing coroutine */
2201 if (expect_true (!slf_frame.prepare))
2202 {
2203 /* first iteration */
2204 dSP;
2205 SV **arg = PL_stack_base + TOPMARK + 1;
2206 int items = SP - arg; /* args without function object */
2207 SV *gv = *sp;
2208
2209 /* do a quick consistency check on the "function" object, and if it isn't */
2210 /* for us, divert to the real entersub */
2211 if (SvTYPE (gv) != SVt_PVGV
2212 || !GvCV (gv)
2213 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2214 return PL_ppaddr[OP_ENTERSUB](aTHX);
2215
2216 if (!(PL_op->op_flags & OPf_STACKED))
2217 {
2218 /* ampersand-form of call, use @_ instead of stack */
2219 AV *av = GvAV (PL_defgv);
2220 arg = AvARRAY (av);
2221 items = AvFILLp (av) + 1;
2222 }
2223
2224 /* now call the init function, which needs to set up slf_frame */
2225 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2226 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2227
2228 /* pop args */
2229 SP = PL_stack_base + POPMARK;
2230
2231 PUTBACK;
2232 }
2233
2234 /* now that we have a slf_frame, interpret it! */
2235 /* we use a callback system not to make the code needlessly */
2236 /* complicated, but so we can run multiple perl coros from one cctx */
2237
2238 do
2239 {
2240 struct coro_transfer_args ta;
2241
2242 slf_frame.prepare (aTHX_ &ta);
2243 TRANSFER (ta, 0);
2244
2245 checkmark = PL_stack_sp - PL_stack_base;
2246 }
2247 while (slf_frame.check (aTHX_ &slf_frame));
2248
2249 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2250
2251 /* exception handling */
2252 if (expect_false (CORO_THROW))
2253 {
2254 SV *exception = sv_2mortal (CORO_THROW);
2255
2256 CORO_THROW = 0;
2257 sv_setsv (ERRSV, exception);
2258 croak (0);
2259 }
2260
2261 /* return value handling - mostly like entersub */
2262 /* make sure we put something on the stack in scalar context */
2263 if (GIMME_V == G_SCALAR)
2264 {
2265 dSP;
2266 SV **bot = PL_stack_base + checkmark;
2267
2268 if (sp == bot) /* too few, push undef */
2269 bot [1] = &PL_sv_undef;
2270 else if (sp != bot + 1) /* too many, take last one */
2271 bot [1] = *sp;
2272
2273 SP = bot + 1;
2274
2275 PUTBACK;
2276 }
2277
2278 return NORMAL;
2279}
2280
2281static void
2282api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2283{
2284 int i;
2285 SV **arg = PL_stack_base + ax;
2286 int items = PL_stack_sp - arg + 1;
2287
2288 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2289
2290 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2291 && PL_op->op_ppaddr != pp_slf)
2292 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2293
2294 CvFLAGS (cv) |= CVf_SLF;
2295 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2296 slf_cv = cv;
2297
2298 /* we patch the op, and then re-run the whole call */
2299 /* we have to put the same argument on the stack for this to work */
2300 /* and this will be done by pp_restore */
2301 slf_restore.op_next = (OP *)&slf_restore;
2302 slf_restore.op_type = OP_CUSTOM;
2303 slf_restore.op_ppaddr = pp_restore;
2304 slf_restore.op_first = PL_op;
2305
2306 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2307
2308 if (PL_op->op_flags & OPf_STACKED)
2309 {
2310 if (items > slf_arga)
2311 {
2312 slf_arga = items;
2313 free (slf_argv);
2314 slf_argv = malloc (slf_arga * sizeof (SV *));
2315 }
2316
2317 slf_argc = items;
2318
2319 for (i = 0; i < items; ++i)
2320 slf_argv [i] = SvREFCNT_inc (arg [i]);
2321 }
2322 else
2323 slf_argc = 0;
2324
2325 PL_op->op_ppaddr = pp_slf;
2326 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2327
2328 PL_op = (OP *)&slf_restore;
2329}
2330
2331/*****************************************************************************/
2332/* dynamic wind */
2333
2334static void
2335on_enterleave_call (pTHX_ SV *cb)
2336{
2337 dSP;
2338
2339 PUSHSTACK;
2340
2341 PUSHMARK (SP);
2342 PUTBACK;
2343 call_sv (cb, G_VOID | G_DISCARD);
2344 SPAGAIN;
2345
2346 POPSTACK;
2347}
2348
2349static SV *
2350coro_avp_pop_and_free (pTHX_ AV **avp)
2351{
2352 AV *av = *avp;
2353 SV *res = av_pop (av);
2354
2355 if (AvFILLp (av) < 0)
2356 {
2357 *avp = 0;
2358 SvREFCNT_dec (av);
2359 }
2360
2361 return res;
2362}
2363
2364static void
2365coro_pop_on_enter (pTHX_ void *coro)
2366{
2367 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2368 SvREFCNT_dec (cb);
2369}
2370
2371static void
2372coro_pop_on_leave (pTHX_ void *coro)
2373{
2374 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2375 on_enterleave_call (aTHX_ sv_2mortal (cb));
1710} 2376}
1711 2377
1712/*****************************************************************************/ 2378/*****************************************************************************/
1713/* PerlIO::cede */ 2379/* PerlIO::cede */
1714 2380
… …
1783 PerlIOBuf_get_cnt, 2449 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 2450 PerlIOBuf_set_ptrcnt,
1785}; 2451};
1786 2452
1787/*****************************************************************************/ 2453/*****************************************************************************/
2454/* Coro::Semaphore & Coro::Signal */
1788 2455
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 2456static SV *
1800pp_restore (pTHX) 2457coro_waitarray_new (pTHX_ int count)
1801{ 2458{
1802 dSP; 2459 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2460 AV *av = newAV ();
2461 SV **ary;
1803 2462
1804 PUSHMARK (SP); 2463 /* unfortunately, building manually saves memory */
2464 Newx (ary, 2, SV *);
2465 AvALLOC (av) = ary;
2466#if PERL_VERSION_ATLEAST (5,10,0)
2467 AvARRAY (av) = ary;
2468#else
2469 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2470 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2471 SvPVX ((SV *)av) = (char *)ary;
2472#endif
2473 AvMAX (av) = 1;
2474 AvFILLp (av) = 0;
2475 ary [0] = newSViv (count);
1805 2476
1806 EXTEND (SP, 3); 2477 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 2478}
1814 2479
1815static void 2480/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820 2481
1821static void 2482static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, int adjust) 2483coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 2484{
1994 SV *count_sv = AvARRAY (av)[0]; 2485 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv); 2486 IV count = SvIVX (count_sv);
1996 2487
1997 count += adjust; 2488 count += adjust;
1998 SvIVX (count_sv) = count; 2489 SvIVX (count_sv) = count;
1999 2490
2000 /* now wake up as many waiters as possible */ 2491 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) >= count) 2492 while (count > 0 && AvFILLp (av) > 0)
2002 { 2493 {
2003 SV *cb; 2494 SV *cb;
2004 2495
2005 /* swap first two elements so we can shift a waiter */ 2496 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 2497 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 2498 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 2499 cb = av_shift (av);
2009 2500
2010 if (SvOBJECT (cb)) 2501 if (SvOBJECT (cb))
2502 {
2011 api_ready (aTHX_ cb); 2503 api_ready (aTHX_ cb);
2012 else 2504 --count;
2013 croak ("callbacks not yet supported"); 2505 }
2506 else if (SvTYPE (cb) == SVt_PVCV)
2507 {
2508 dSP;
2509 PUSHMARK (SP);
2510 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2511 PUTBACK;
2512 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2513 }
2014 2514
2015 SvREFCNT_dec (cb); 2515 SvREFCNT_dec (cb);
2016
2017 --count;
2018 } 2516 }
2019} 2517}
2020 2518
2021static void 2519static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2520coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{ 2521{
2024 /* call $sem->adjust (0) to possibly wake up some waiters */ 2522 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2523 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026} 2524}
2027 2525
2028static int 2526static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2527slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 2528{
2031 AV *av = (AV *)frame->data; 2529 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 2530 SV *count_sv = AvARRAY (av)[0];
2033 2531
2532 /* if we are about to throw, don't actually acquire the lock, just throw */
2533 if (CORO_THROW)
2534 return 0;
2034 if (SvIVX (count_sv) > 0) 2535 else if (SvIVX (count_sv) > 0)
2035 { 2536 {
2036 SvSTATE_current->on_destroy = 0; 2537 SvSTATE_current->on_destroy = 0;
2538
2539 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2540 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2541 else
2542 coro_semaphore_adjust (aTHX_ av, 0);
2543
2038 return 0; 2544 return 0;
2039 } 2545 }
2040 else 2546 else
2041 { 2547 {
2042 int i; 2548 int i;
… …
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2557 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1; 2558 return 1;
2053 } 2559 }
2054} 2560}
2055 2561
2056static void 2562static int
2563slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2564{
2565 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2566}
2567
2568static int
2569slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2570{
2571 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2572}
2573
2574static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2575slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 2576{
2059 AV *av = (AV *)SvRV (arg [0]); 2577 AV *av = (AV *)SvRV (arg [0]);
2060 2578
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 2579 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 2580 {
… …
2072 2590
2073 /* to avoid race conditions when a woken-up coro gets terminated */ 2591 /* to avoid race conditions when a woken-up coro gets terminated */
2074 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2592 /* we arrange for a temporary on_destroy that calls adjust (0) */
2075 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2593 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076 } 2594 }
2595}
2077 2596
2597static void
2598slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2599{
2600 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078 frame->check = slf_check_semaphore_down; 2601 frame->check = slf_check_semaphore_down;
2602}
2079 2603
2604static void
2605slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2606{
2607 if (items >= 2)
2608 {
2609 /* callback form */
2610 AV *av = (AV *)SvRV (arg [0]);
2611 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2612
2613 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2614
2615 if (SvIVX (AvARRAY (av)[0]) > 0)
2616 coro_semaphore_adjust (aTHX_ av, 0);
2617
2618 frame->prepare = prepare_nop;
2619 frame->check = slf_check_nop;
2620 }
2621 else
2622 {
2623 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2624 frame->check = slf_check_semaphore_wait;
2625 }
2626}
2627
2628/* signal */
2629
2630static void
2631coro_signal_wake (pTHX_ AV *av, int count)
2632{
2633 SvIVX (AvARRAY (av)[0]) = 0;
2634
2635 /* now signal count waiters */
2636 while (count > 0 && AvFILLp (av) > 0)
2637 {
2638 SV *cb;
2639
2640 /* swap first two elements so we can shift a waiter */
2641 cb = AvARRAY (av)[0];
2642 AvARRAY (av)[0] = AvARRAY (av)[1];
2643 AvARRAY (av)[1] = cb;
2644
2645 cb = av_shift (av);
2646
2647 api_ready (aTHX_ cb);
2648 sv_setiv (cb, 0); /* signal waiter */
2649 SvREFCNT_dec (cb);
2650
2651 --count;
2652 }
2653}
2654
2655static int
2656slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2657{
2658 /* if we are about to throw, also stop waiting */
2659 return SvROK ((SV *)frame->data) && !CORO_THROW;
2660}
2661
2662static void
2663slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664{
2665 AV *av = (AV *)SvRV (arg [0]);
2666
2667 if (SvIVX (AvARRAY (av)[0]))
2668 {
2669 SvIVX (AvARRAY (av)[0]) = 0;
2670 frame->prepare = prepare_nop;
2671 frame->check = slf_check_nop;
2672 }
2673 else
2674 {
2675 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2676
2677 av_push (av, waiter);
2678
2679 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2680 frame->prepare = prepare_schedule;
2681 frame->check = slf_check_signal_wait;
2682 }
2080} 2683}
2081 2684
2082/*****************************************************************************/ 2685/*****************************************************************************/
2686/* Coro::AIO */
2083 2687
2084#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2688#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085 2689
2086/* create a closure from XS, returns a code reference */ 2690/* helper storage struct */
2087/* the arg can be accessed via GENSUB_ARG from the callback */ 2691struct io_state
2088/* the callback must use dXSARGS/XSRETURN */
2089static SV *
2090gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091{ 2692{
2092 CV *cv = (CV *)NEWSV (0, 0); 2693 int errorno;
2694 I32 laststype; /* U16 in 5.10.0 */
2695 int laststatval;
2696 Stat_t statcache;
2697};
2093 2698
2699static void
2700coro_aio_callback (pTHX_ CV *cv)
2701{
2702 dXSARGS;
2703 AV *state = (AV *)GENSUB_ARG;
2704 SV *coro = av_pop (state);
2705 SV *data_sv = newSV (sizeof (struct io_state));
2706
2707 av_extend (state, items - 1);
2708
2094 sv_upgrade ((SV *)cv, SVt_PVCV); 2709 sv_upgrade (data_sv, SVt_PV);
2710 SvCUR_set (data_sv, sizeof (struct io_state));
2711 SvPOK_only (data_sv);
2095 2712
2096 CvANON_on (cv); 2713 {
2097 CvISXSUB_on (cv); 2714 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2098 CvXSUB (cv) = xsub;
2099 GENSUB_ARG = arg;
2100 2715
2101 return newRV_noinc ((SV *)cv); 2716 data->errorno = errno;
2717 data->laststype = PL_laststype;
2718 data->laststatval = PL_laststatval;
2719 data->statcache = PL_statcache;
2720 }
2721
2722 /* now build the result vector out of all the parameters and the data_sv */
2723 {
2724 int i;
2725
2726 for (i = 0; i < items; ++i)
2727 av_push (state, SvREFCNT_inc_NN (ST (i)));
2728 }
2729
2730 av_push (state, data_sv);
2731
2732 api_ready (aTHX_ coro);
2733 SvREFCNT_dec (coro);
2734 SvREFCNT_dec ((AV *)state);
2735}
2736
2737static int
2738slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2739{
2740 AV *state = (AV *)frame->data;
2741
2742 /* if we are about to throw, return early */
2743 /* this does not cancel the aio request, but at least */
2744 /* it quickly returns */
2745 if (CORO_THROW)
2746 return 0;
2747
2748 /* one element that is an RV? repeat! */
2749 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2750 return 1;
2751
2752 /* restore status */
2753 {
2754 SV *data_sv = av_pop (state);
2755 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2756
2757 errno = data->errorno;
2758 PL_laststype = data->laststype;
2759 PL_laststatval = data->laststatval;
2760 PL_statcache = data->statcache;
2761
2762 SvREFCNT_dec (data_sv);
2763 }
2764
2765 /* push result values */
2766 {
2767 dSP;
2768 int i;
2769
2770 EXTEND (SP, AvFILLp (state) + 1);
2771 for (i = 0; i <= AvFILLp (state); ++i)
2772 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2773
2774 PUTBACK;
2775 }
2776
2777 return 0;
2778}
2779
2780static void
2781slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2782{
2783 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2784 SV *coro_hv = SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv (coro_hv);
2786
2787 /* put our coroutine id on the state arg */
2788 av_push (state, SvREFCNT_inc_NN (coro_hv));
2789
2790 /* first see whether we have a non-zero priority and set it as AIO prio */
2791 if (coro->prio)
2792 {
2793 dSP;
2794
2795 static SV *prio_cv;
2796 static SV *prio_sv;
2797
2798 if (expect_false (!prio_cv))
2799 {
2800 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2801 prio_sv = newSViv (0);
2802 }
2803
2804 PUSHMARK (SP);
2805 sv_setiv (prio_sv, coro->prio);
2806 XPUSHs (prio_sv);
2807
2808 PUTBACK;
2809 call_sv (prio_cv, G_VOID | G_DISCARD);
2810 }
2811
2812 /* now call the original request */
2813 {
2814 dSP;
2815 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2816 int i;
2817
2818 PUSHMARK (SP);
2819
2820 /* first push all args to the stack */
2821 EXTEND (SP, items + 1);
2822
2823 for (i = 0; i < items; ++i)
2824 PUSHs (arg [i]);
2825
2826 /* now push the callback closure */
2827 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2828
2829 /* now call the AIO function - we assume our request is uncancelable */
2830 PUTBACK;
2831 call_sv ((SV *)req, G_VOID | G_DISCARD);
2832 }
2833
2834 /* now that the requets is going, we loop toll we have a result */
2835 frame->data = (void *)state;
2836 frame->prepare = prepare_schedule;
2837 frame->check = slf_check_aio_req;
2838}
2839
2840static void
2841coro_aio_req_xs (pTHX_ CV *cv)
2842{
2843 dXSARGS;
2844
2845 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2846
2847 XSRETURN_EMPTY;
2102} 2848}
2103 2849
2104/*****************************************************************************/ 2850/*****************************************************************************/
2851
2852#if CORO_CLONE
2853# include "clone.c"
2854#endif
2105 2855
2106MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2856MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2107 2857
2108PROTOTYPES: DISABLE 2858PROTOTYPES: DISABLE
2109 2859
… …
2114 coro_thx = PERL_GET_CONTEXT; 2864 coro_thx = PERL_GET_CONTEXT;
2115# endif 2865# endif
2116#endif 2866#endif
2117 BOOT_PAGESIZE; 2867 BOOT_PAGESIZE;
2118 2868
2869 cctx_current = cctx_new_empty ();
2870
2119 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2871 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2120 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2872 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2121 2873
2122 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2874 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2123 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2875 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2142 2894
2143 { 2895 {
2144 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2896 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2145 2897
2146 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2898 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2147 hv_store_ent (PL_custom_op_names, slf, 2899 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2148 newSVpv ("coro_slf", 0), 0);
2149 2900
2150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2901 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2151 hv_store_ent (PL_custom_op_descs, slf, 2902 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2152 newSVpv ("coro schedule like function", 0), 0);
2153 } 2903 }
2154 2904
2155 coroapi.ver = CORO_API_VERSION; 2905 coroapi.ver = CORO_API_VERSION;
2156 coroapi.rev = CORO_API_REVISION; 2906 coroapi.rev = CORO_API_REVISION;
2157 2907
… …
2176 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2926 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2177} 2927}
2178 2928
2179SV * 2929SV *
2180new (char *klass, ...) 2930new (char *klass, ...)
2931 ALIAS:
2932 Coro::new = 1
2181 CODE: 2933 CODE:
2182{ 2934{
2183 struct coro *coro; 2935 struct coro *coro;
2184 MAGIC *mg; 2936 MAGIC *mg;
2185 HV *hv; 2937 HV *hv;
2938 CV *cb;
2186 int i; 2939 int i;
2940
2941 if (items > 1)
2942 {
2943 cb = coro_sv_2cv (aTHX_ ST (1));
2944
2945 if (!ix)
2946 {
2947 if (CvISXSUB (cb))
2948 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2949
2950 if (!CvROOT (cb))
2951 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2952 }
2953 }
2187 2954
2188 Newz (0, coro, 1, struct coro); 2955 Newz (0, coro, 1, struct coro);
2189 coro->args = newAV (); 2956 coro->args = newAV ();
2190 coro->flags = CF_NEW; 2957 coro->flags = CF_NEW;
2191 2958
… …
2196 coro->hv = hv = newHV (); 2963 coro->hv = hv = newHV ();
2197 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2964 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198 mg->mg_flags |= MGf_DUP; 2965 mg->mg_flags |= MGf_DUP;
2199 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2966 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200 2967
2968 if (items > 1)
2969 {
2201 av_extend (coro->args, items - 1); 2970 av_extend (coro->args, items - 1 + ix - 1);
2971
2972 if (ix)
2973 {
2974 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2975 cb = cv_coro_run;
2976 }
2977
2978 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2979
2202 for (i = 1; i < items; i++) 2980 for (i = 2; i < items; i++)
2203 av_push (coro->args, newSVsv (ST (i))); 2981 av_push (coro->args, newSVsv (ST (i)));
2982 }
2204} 2983}
2205 OUTPUT: 2984 OUTPUT:
2206 RETVAL 2985 RETVAL
2207
2208void
2209_set_stacklevel (...)
2210 CODE:
2211 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212 2986
2213void 2987void
2214transfer (...) 2988transfer (...)
2215 PROTOTYPE: $$ 2989 PROTOTYPE: $$
2216 CODE: 2990 CODE:
2217 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2991 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218 2992
2219bool 2993bool
2220_destroy (SV *coro_sv) 2994_destroy (SV *coro_sv)
2221 CODE: 2995 CODE:
2222 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2996 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2226void 3000void
2227_exit (int code) 3001_exit (int code)
2228 PROTOTYPE: $ 3002 PROTOTYPE: $
2229 CODE: 3003 CODE:
2230 _exit (code); 3004 _exit (code);
3005
3006SV *
3007clone (Coro::State coro)
3008 CODE:
3009{
3010#if CORO_CLONE
3011 struct coro *ncoro = coro_clone (aTHX_ coro);
3012 MAGIC *mg;
3013 /* TODO: too much duplication */
3014 ncoro->hv = newHV ();
3015 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3016 mg->mg_flags |= MGf_DUP;
3017 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3018#else
3019 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3020#endif
3021}
3022 OUTPUT:
3023 RETVAL
2231 3024
2232int 3025int
2233cctx_stacksize (int new_stacksize = 0) 3026cctx_stacksize (int new_stacksize = 0)
2234 PROTOTYPE: ;$ 3027 PROTOTYPE: ;$
2235 CODE: 3028 CODE:
… …
2285 eval = 1 3078 eval = 1
2286 CODE: 3079 CODE:
2287{ 3080{
2288 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3081 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2289 { 3082 {
2290 struct coro temp; 3083 struct coro *current = SvSTATE_current;
2291 3084
2292 if (!(coro->flags & CF_RUNNING)) 3085 if (current != coro)
2293 { 3086 {
2294 PUTBACK; 3087 PUTBACK;
2295 save_perl (aTHX_ &temp); 3088 save_perl (aTHX_ current);
2296 load_perl (aTHX_ coro); 3089 load_perl (aTHX_ coro);
3090 SPAGAIN;
2297 } 3091 }
2298 3092
2299 {
2300 dSP;
2301 ENTER;
2302 SAVETMPS;
2303 PUTBACK;
2304 PUSHSTACK; 3093 PUSHSTACK;
3094
2305 PUSHMARK (SP); 3095 PUSHMARK (SP);
3096 PUTBACK;
2306 3097
2307 if (ix) 3098 if (ix)
2308 eval_sv (coderef, 0); 3099 eval_sv (coderef, 0);
2309 else 3100 else
2310 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3101 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2311 3102
2312 POPSTACK; 3103 POPSTACK;
2313 SPAGAIN; 3104 SPAGAIN;
2314 FREETMPS;
2315 LEAVE;
2316 PUTBACK;
2317 }
2318 3105
2319 if (!(coro->flags & CF_RUNNING)) 3106 if (current != coro)
2320 { 3107 {
3108 PUTBACK;
2321 save_perl (aTHX_ coro); 3109 save_perl (aTHX_ coro);
2322 load_perl (aTHX_ &temp); 3110 load_perl (aTHX_ current);
2323 SPAGAIN; 3111 SPAGAIN;
2324 } 3112 }
2325 } 3113 }
2326} 3114}
2327 3115
… …
2331 ALIAS: 3119 ALIAS:
2332 is_ready = CF_READY 3120 is_ready = CF_READY
2333 is_running = CF_RUNNING 3121 is_running = CF_RUNNING
2334 is_new = CF_NEW 3122 is_new = CF_NEW
2335 is_destroyed = CF_DESTROYED 3123 is_destroyed = CF_DESTROYED
3124 is_suspended = CF_SUSPENDED
2336 CODE: 3125 CODE:
2337 RETVAL = boolSV (coro->flags & ix); 3126 RETVAL = boolSV (coro->flags & ix);
2338 OUTPUT: 3127 OUTPUT:
2339 RETVAL 3128 RETVAL
2340 3129
2341void 3130void
2342throw (Coro::State self, SV *throw = &PL_sv_undef) 3131throw (Coro::State self, SV *throw = &PL_sv_undef)
2343 PROTOTYPE: $;$ 3132 PROTOTYPE: $;$
2344 CODE: 3133 CODE:
3134{
3135 struct coro *current = SvSTATE_current;
3136 SV **throwp = self == current ? &CORO_THROW : &self->except;
2345 SvREFCNT_dec (self->throw); 3137 SvREFCNT_dec (*throwp);
2346 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3138 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3139}
2347 3140
2348void 3141void
2349api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3142api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350 PROTOTYPE: $;$ 3143 PROTOTYPE: $;$
2351 C_ARGS: aTHX_ coro, flags 3144 C_ARGS: aTHX_ coro, flags
2352 3145
2353SV * 3146SV *
2354has_cctx (Coro::State coro) 3147has_cctx (Coro::State coro)
2355 PROTOTYPE: $ 3148 PROTOTYPE: $
2356 CODE: 3149 CODE:
2357 RETVAL = boolSV (!!coro->cctx); 3150 /* maybe manage the running flag differently */
3151 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2358 OUTPUT: 3152 OUTPUT:
2359 RETVAL 3153 RETVAL
2360 3154
2361int 3155int
2362is_traced (Coro::State coro) 3156is_traced (Coro::State coro)
… …
2382 3176
2383void 3177void
2384force_cctx () 3178force_cctx ()
2385 PROTOTYPE: 3179 PROTOTYPE:
2386 CODE: 3180 CODE:
2387 SvSTATE_current->cctx->idle_sp = 0; 3181 cctx_current->idle_sp = 0;
2388 3182
2389void 3183void
2390swap_defsv (Coro::State self) 3184swap_defsv (Coro::State self)
2391 PROTOTYPE: $ 3185 PROTOTYPE: $
2392 ALIAS: 3186 ALIAS:
… …
2400 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3194 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401 3195
2402 SV *tmp = *src; *src = *dst; *dst = tmp; 3196 SV *tmp = *src; *src = *dst; *dst = tmp;
2403 } 3197 }
2404 3198
3199void
3200cancel (Coro::State self)
3201 CODE:
3202 coro_state_destroy (aTHX_ self);
3203 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3204
3205
2405MODULE = Coro::State PACKAGE = Coro 3206MODULE = Coro::State PACKAGE = Coro
2406 3207
2407BOOT: 3208BOOT:
2408{ 3209{
2409 int i; 3210 int i;
2410 3211
2411 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3212 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3213 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414 3214 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3215 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2415 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3216 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2416 SvREADONLY_on (coro_current); 3217 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3218 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3219 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3220 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3221
3222 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3223 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3224 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3225 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2417 3226
2418 coro_stash = gv_stashpv ("Coro", TRUE); 3227 coro_stash = gv_stashpv ("Coro", TRUE);
2419 3228
2420 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2421 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2429 3238
2430 { 3239 {
2431 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2432 3241
2433 coroapi.schedule = api_schedule; 3242 coroapi.schedule = api_schedule;
3243 coroapi.schedule_to = api_schedule_to;
2434 coroapi.cede = api_cede; 3244 coroapi.cede = api_cede;
2435 coroapi.cede_notself = api_cede_notself; 3245 coroapi.cede_notself = api_cede_notself;
2436 coroapi.ready = api_ready; 3246 coroapi.ready = api_ready;
2437 coroapi.is_ready = api_is_ready; 3247 coroapi.is_ready = api_is_ready;
2438 coroapi.nready = coro_nready; 3248 coroapi.nready = coro_nready;
2439 coroapi.current = coro_current; 3249 coroapi.current = coro_current;
2440 3250
2441 GCoroAPI = &coroapi; 3251 /*GCoroAPI = &coroapi;*/
2442 sv_setiv (sv, (IV)&coroapi); 3252 sv_setiv (sv, (IV)&coroapi);
2443 SvREADONLY_on (sv); 3253 SvREADONLY_on (sv);
2444 } 3254 }
2445} 3255}
2446 3256
2447void 3257void
3258terminate (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3261
3262void
2448schedule (...) 3263schedule (...)
2449 CODE: 3264 CODE:
2450 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3265 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3266
3267void
3268schedule_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3271
3272void
3273cede_to (...)
3274 CODE:
3275 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2451 3276
2452void 3277void
2453cede (...) 3278cede (...)
2454 CODE: 3279 CODE:
2455 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3280 CORO_EXECUTE_SLF_XS (slf_init_cede);
2456 3281
2457void 3282void
2458cede_notself (...) 3283cede_notself (...)
2459 CODE: 3284 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3285 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2461 3286
2462void 3287void
2463_set_current (SV *current) 3288_set_current (SV *current)
2464 PROTOTYPE: $ 3289 PROTOTYPE: $
2465 CODE: 3290 CODE:
… …
2510 CODE: 3335 CODE:
2511 RETVAL = coro_nready; 3336 RETVAL = coro_nready;
2512 OUTPUT: 3337 OUTPUT:
2513 RETVAL 3338 RETVAL
2514 3339
2515# for async_pool speedup
2516void 3340void
2517_pool_1 (SV *cb) 3341suspend (Coro::State self)
3342 PROTOTYPE: $
2518 CODE: 3343 CODE:
2519{ 3344 self->flags |= CF_SUSPENDED;
2520 HV *hv = (HV *)SvRV (coro_current);
2521 struct coro *coro = SvSTATE_hv ((SV *)hv);
2522 AV *defav = GvAV (PL_defgv);
2523 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524 AV *invoke_av;
2525 int i, len;
2526
2527 if (!invoke)
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 SvREFCNT_dec (coro->saved_deffh);
2536 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538 hv_store (hv, "desc", sizeof ("desc") - 1,
2539 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541 invoke_av = (AV *)SvRV (invoke);
2542 len = av_len (invoke_av);
2543
2544 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546 if (len > 0)
2547 {
2548 av_fill (defav, len - 1);
2549 for (i = 0; i < len; ++i)
2550 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2551 }
2552}
2553 3345
2554void 3346void
2555_pool_2 (SV *cb) 3347resume (Coro::State self)
3348 PROTOTYPE: $
2556 CODE: 3349 CODE:
2557{ 3350 self->flags &= ~CF_SUSPENDED;
2558 struct coro *coro = SvSTATE_current;
2559
2560 sv_setsv (cb, &PL_sv_undef);
2561
2562 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2563 coro->saved_deffh = 0;
2564
2565 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567 {
2568 SV *old = PL_diehook;
2569 PL_diehook = 0;
2570 SvREFCNT_dec (old);
2571 croak ("\3async_pool terminate\2\n");
2572 }
2573
2574 av_clear (GvAV (PL_defgv));
2575 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578 coro->prio = 0;
2579
2580 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581 api_trace (aTHX_ coro_current, 0);
2582
2583 av_push (av_async_pool, newSVsv (coro_current));
2584}
2585
2586
2587MODULE = Coro::State PACKAGE = Coro::AIO
2588 3351
2589void 3352void
2590_get_state (SV *self) 3353_pool_handler (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3356
3357void
3358async_pool (SV *cv, ...)
2591 PROTOTYPE: $ 3359 PROTOTYPE: &@
2592 PPCODE: 3360 PPCODE:
2593{ 3361{
2594 AV *defav = GvAV (PL_defgv); 3362 HV *hv = (HV *)av_pop (av_async_pool);
2595 AV *av = newAV (); 3363 AV *av = newAV ();
3364 SV *cb = ST (0);
2596 int i; 3365 int i;
2597 SV *data_sv = newSV (sizeof (struct io_state));
2598 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599 SvCUR_set (data_sv, sizeof (struct io_state));
2600 SvPOK_only (data_sv);
2601 3366
2602 data->errorno = errno; 3367 av_extend (av, items - 2);
2603 data->laststype = PL_laststype; 3368 for (i = 1; i < items; ++i)
2604 data->laststatval = PL_laststatval;
2605 data->statcache = PL_statcache;
2606
2607 av_extend (av, AvFILLp (defav) + 1 + 1);
2608
2609 for (i = 0; i <= AvFILLp (defav); ++i)
2610 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3369 av_push (av, SvREFCNT_inc_NN (ST (i)));
2611 3370
2612 av_push (av, data_sv); 3371 if ((SV *)hv == &PL_sv_undef)
2613
2614 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616 api_ready (aTHX_ self);
2617}
2618
2619void
2620_set_state (SV *state)
2621 PROTOTYPE: $
2622 PPCODE:
2623{
2624 AV *av = (AV *)SvRV (state);
2625 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626 int i;
2627
2628 errno = data->errorno;
2629 PL_laststype = data->laststype;
2630 PL_laststatval = data->laststatval;
2631 PL_statcache = data->statcache;
2632
2633 EXTEND (SP, AvFILLp (av));
2634 for (i = 0; i < AvFILLp (av); ++i)
2635 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636}
2637
2638
2639MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641BOOT:
2642 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644void
2645_schedule (...)
2646 CODE:
2647{
2648 static int incede;
2649
2650 api_cede_notself (aTHX);
2651
2652 ++incede;
2653 while (coro_nready >= incede && api_cede (aTHX))
2654 ;
2655
2656 sv_setsv (sv_activity, &PL_sv_undef);
2657 if (coro_nready >= incede)
2658 { 3372 {
2659 PUSHMARK (SP); 3373 PUSHMARK (SP);
3374 EXTEND (SP, 2);
3375 PUSHs (sv_Coro);
3376 PUSHs ((SV *)cv_pool_handler);
2660 PUTBACK; 3377 PUTBACK;
2661 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3378 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2662 SPAGAIN; 3379 SPAGAIN;
3380
3381 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2663 } 3382 }
2664 3383
2665 --incede; 3384 {
3385 struct coro *coro = SvSTATE_hv (hv);
3386
3387 assert (!coro->invoke_cb);
3388 assert (!coro->invoke_av);
3389 coro->invoke_cb = SvREFCNT_inc (cb);
3390 coro->invoke_av = av;
3391 }
3392
3393 api_ready (aTHX_ (SV *)hv);
3394
3395 if (GIMME_V != G_VOID)
3396 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3397 else
3398 SvREFCNT_dec (hv);
3399}
3400
3401SV *
3402rouse_cb ()
3403 PROTOTYPE:
3404 CODE:
3405 RETVAL = coro_new_rouse_cb (aTHX);
3406 OUTPUT:
3407 RETVAL
3408
3409void
3410rouse_wait (...)
3411 PROTOTYPE: ;$
3412 PPCODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3414
3415void
3416on_enter (SV *block)
3417 ALIAS:
3418 on_leave = 1
3419 PROTOTYPE: &
3420 CODE:
3421{
3422 struct coro *coro = SvSTATE_current;
3423 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3424
3425 block = (SV *)coro_sv_2cv (aTHX_ block);
3426
3427 if (!*avp)
3428 *avp = newAV ();
3429
3430 av_push (*avp, SvREFCNT_inc (block));
3431
3432 if (!ix)
3433 on_enterleave_call (aTHX_ block);
3434
3435 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3436 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3437 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
2666} 3438}
2667 3439
2668 3440
2669MODULE = Coro::State PACKAGE = PerlIO::cede 3441MODULE = Coro::State PACKAGE = PerlIO::cede
2670 3442
2671BOOT: 3443BOOT:
2672 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3444 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673 3445
3446
2674MODULE = Coro::State PACKAGE = Coro::Semaphore 3447MODULE = Coro::State PACKAGE = Coro::Semaphore
2675 3448
2676SV * 3449SV *
2677new (SV *klass, SV *count_ = 0) 3450new (SV *klass, SV *count = 0)
2678 CODE: 3451 CODE:
2679{ 3452 RETVAL = sv_bless (
2680 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3453 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2681 AV *av = newAV (); 3454 GvSTASH (CvGV (cv))
2682 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3455 );
2683 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3456 OUTPUT:
2684} 3457 RETVAL
3458
3459# helper for Coro::Channel and others
3460SV *
3461_alloc (int count)
3462 CODE:
3463 RETVAL = coro_waitarray_new (aTHX_ count);
2685 OUTPUT: 3464 OUTPUT:
2686 RETVAL 3465 RETVAL
2687 3466
2688SV * 3467SV *
2689count (SV *self) 3468count (SV *self)
… …
2698 adjust = 1 3477 adjust = 1
2699 CODE: 3478 CODE:
2700 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3479 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701 3480
2702void 3481void
2703down (SV *self) 3482down (...)
2704 CODE: 3483 CODE:
2705 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3484 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3485
3486void
3487wait (...)
3488 CODE:
3489 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706 3490
2707void 3491void
2708try (SV *self) 3492try (SV *self)
2709 PPCODE: 3493 PPCODE:
2710{ 3494{
… …
2722 XSRETURN_NO; 3506 XSRETURN_NO;
2723} 3507}
2724 3508
2725void 3509void
2726waiters (SV *self) 3510waiters (SV *self)
2727 CODE: 3511 PPCODE:
2728{ 3512{
2729 AV *av = (AV *)SvRV (self); 3513 AV *av = (AV *)SvRV (self);
3514 int wcount = AvFILLp (av) + 1 - 1;
2730 3515
2731 if (GIMME_V == G_SCALAR) 3516 if (GIMME_V == G_SCALAR)
2732 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3517 XPUSHs (sv_2mortal (newSViv (wcount)));
2733 else 3518 else
2734 { 3519 {
2735 int i; 3520 int i;
2736 EXTEND (SP, AvFILLp (av) + 1 - 1); 3521 EXTEND (SP, wcount);
2737 for (i = 1; i <= AvFILLp (av); ++i) 3522 for (i = 1; i <= wcount; ++i)
2738 PUSHs (newSVsv (AvARRAY (av)[i])); 3523 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739 } 3524 }
2740} 3525}
2741 3526
3527MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3528
3529void
3530_may_delete (SV *sem, int count, int extra_refs)
3531 PPCODE:
3532{
3533 AV *av = (AV *)SvRV (sem);
3534
3535 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3536 && AvFILLp (av) == 0 /* no waiters, just count */
3537 && SvIV (AvARRAY (av)[0]) == count)
3538 XSRETURN_YES;
3539
3540 XSRETURN_NO;
3541}
3542
3543MODULE = Coro::State PACKAGE = Coro::Signal
3544
3545SV *
3546new (SV *klass)
3547 CODE:
3548 RETVAL = sv_bless (
3549 coro_waitarray_new (aTHX_ 0),
3550 GvSTASH (CvGV (cv))
3551 );
3552 OUTPUT:
3553 RETVAL
3554
3555void
3556wait (...)
3557 CODE:
3558 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3559
3560void
3561broadcast (SV *self)
3562 CODE:
3563{
3564 AV *av = (AV *)SvRV (self);
3565 coro_signal_wake (aTHX_ av, AvFILLp (av));
3566}
3567
3568void
3569send (SV *self)
3570 CODE:
3571{
3572 AV *av = (AV *)SvRV (self);
3573
3574 if (AvFILLp (av))
3575 coro_signal_wake (aTHX_ av, 1);
3576 else
3577 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3578}
3579
3580IV
3581awaited (SV *self)
3582 CODE:
3583 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3584 OUTPUT:
3585 RETVAL
3586
3587
3588MODULE = Coro::State PACKAGE = Coro::AnyEvent
3589
3590BOOT:
3591 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3592
3593void
3594_schedule (...)
3595 CODE:
3596{
3597 static int incede;
3598
3599 api_cede_notself (aTHX);
3600
3601 ++incede;
3602 while (coro_nready >= incede && api_cede (aTHX))
3603 ;
3604
3605 sv_setsv (sv_activity, &PL_sv_undef);
3606 if (coro_nready >= incede)
3607 {
3608 PUSHMARK (SP);
3609 PUTBACK;
3610 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3611 }
3612
3613 --incede;
3614}
3615
3616
3617MODULE = Coro::State PACKAGE = Coro::AIO
3618
3619void
3620_register (char *target, char *proto, SV *req)
3621 CODE:
3622{
3623 CV *req_cv = coro_sv_2cv (aTHX_ req);
3624 /* newXSproto doesn't return the CV on 5.8 */
3625 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3626 sv_setpv ((SV *)slf_cv, proto);
3627 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3628}
3629

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