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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.344 by root, Mon Dec 15 19:39:40 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 */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
172static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 184static SV *rv_diehook;
175static SV *rv_warnhook; 185static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
177 187
178/* async_pool helper stuff */ 188/* async_pool helper stuff */
179static SV *sv_pool_rss; 189static SV *sv_pool_rss;
180static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
182 196
183/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
184static SV *sv_activity; 198static SV *sv_activity;
185 199
186static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
219 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 244};
226 245
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 247typedef struct
229{ 248{
230 SV *defsv; 249 SV *defsv;
231 AV *defav; 250 AV *defav;
232 SV *errsv; 251 SV *errsv;
233 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
234#define VAR(name,type) type name; 254#define VAR(name,type) type name;
235# include "state.h" 255# include "state.h"
236#undef VAR 256#undef VAR
237} perl_slots; 257} perl_slots;
238 258
… …
241/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
242struct coro { 262struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 264 coro_cctx *cctx;
245 265
246 /* process data */ 266 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 267 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 268 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 269 perl_slots *slot; /* basically the saved sp */
250 270
271 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 272 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 273 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 274 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 275 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 276 void (*on_destroy)(pTHX_ struct coro *coro);
256 277
257 /* statistics */ 278 /* statistics */
258 int usecount; /* number of transfers to this coro */ 279 int usecount; /* number of transfers to this coro */
259 280
260 /* coro process data */ 281 /* coro process data */
261 int prio; 282 int prio;
262 SV *throw; /* exception to be thrown */ 283 SV *except; /* exception to be thrown */
284 SV *rouse_cb;
263 285
264 /* async_pool */ 286 /* async_pool */
265 SV *saved_deffh; 287 SV *saved_deffh;
288 SV *invoke_cb;
289 AV *invoke_av;
290
291 /* on_enter/on_leave */
292 AV *on_enter;
293 AV *on_leave;
266 294
267 /* linked list */ 295 /* linked list */
268 struct coro *next, *prev; 296 struct coro *next, *prev;
269}; 297};
270 298
271typedef struct coro *Coro__State; 299typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 300typedef struct coro *Coro__State_or_hashref;
273 301
302/* the following variables are effectively part of the perl context */
303/* and get copied between struct coro and these variables */
304/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 305static struct CoroSLF slf_frame; /* the current slf frame */
275 306
276/** Coro ********************************************************************/ 307/** Coro ********************************************************************/
277 308
278#define PRIO_MAX 3 309#define PRIO_MAX 3
… …
284 315
285/* for Coro.pm */ 316/* for Coro.pm */
286static SV *coro_current; 317static SV *coro_current;
287static SV *coro_readyhook; 318static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 319static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
320static CV *cv_coro_run, *cv_coro_terminate;
289static struct coro *coro_first; 321static struct coro *coro_first;
290#define coro_nready coroapi.nready 322#define coro_nready coroapi.nready
291 323
292/** lowlevel stuff **********************************************************/ 324/** lowlevel stuff **********************************************************/
293 325
… …
319 get_hv (name, create); 351 get_hv (name, create);
320#endif 352#endif
321 return get_hv (name, create); 353 return get_hv (name, create);
322} 354}
323 355
356/* may croak */
357INLINE CV *
358coro_sv_2cv (pTHX_ SV *sv)
359{
360 HV *st;
361 GV *gvp;
362 CV *cv = sv_2cv (sv, &st, &gvp, 0);
363
364 if (!cv)
365 croak ("code reference expected");
366
367 return cv;
368}
369
370/*****************************************************************************/
371/* magic glue */
372
373#define CORO_MAGIC_type_cv 26
374#define CORO_MAGIC_type_state PERL_MAGIC_ext
375
376#define CORO_MAGIC_NN(sv, type) \
377 (expect_true (SvMAGIC (sv)->mg_type == type) \
378 ? SvMAGIC (sv) \
379 : mg_find (sv, type))
380
381#define CORO_MAGIC(sv, type) \
382 (expect_true (SvMAGIC (sv)) \
383 ? CORO_MAGIC_NN (sv, type) \
384 : 0)
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
388
389INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414
415/* faster than SvSTATE, but expects a coroutine hv */
416#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
417#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418
419/*****************************************************************************/
420/* padlist management and caching */
421
324static AV * 422static AV *
325coro_clone_padlist (pTHX_ CV *cv) 423coro_derive_padlist (pTHX_ CV *cv)
326{ 424{
327 AV *padlist = CvPADLIST (cv); 425 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 426 AV *newpadlist, *newpad;
329 427
330 newpadlist = newAV (); 428 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 433 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 434#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 435 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 436 --AvFILLp (padlist);
339 437
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 438 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 439 av_store (newpadlist, 1, (SV *)newpad);
342 440
343 return newpadlist; 441 return newpadlist;
344} 442}
345 443
346static void 444static void
347free_padlist (pTHX_ AV *padlist) 445free_padlist (pTHX_ AV *padlist)
348{ 446{
349 /* may be during global destruction */ 447 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 448 if (!IN_DESTRUCT)
351 { 449 {
352 I32 i = AvFILLp (padlist); 450 I32 i = AvFILLp (padlist);
353 while (i >= 0) 451
452 while (i > 0) /* special-case index 0 */
354 { 453 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 454 /* we try to be extra-careful here */
356 if (svp) 455 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 456 I32 j = AvFILLp (av);
358 SV *sv; 457
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 458 while (j >= 0)
459 SvREFCNT_dec (AvARRAY (av)[j--]);
460
461 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 462 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 463 }
365 464
465 SvREFCNT_dec (AvARRAY (padlist)[0]);
466
467 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 468 SvREFCNT_dec ((SV*)padlist);
367 } 469 }
368} 470}
369 471
370static int 472static int
… …
379 481
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 482 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 483
382 return 0; 484 return 0;
383} 485}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 486
388static MGVTBL coro_cv_vtbl = { 487static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 488 0, 0, 0, 0,
390 coro_cv_free 489 coro_cv_free
391}; 490};
392
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 491
442/* the next two functions merely cache the padlists */ 492/* the next two functions merely cache the padlists */
443static void 493static void
444get_padlist (pTHX_ CV *cv) 494get_padlist (pTHX_ CV *cv)
445{ 495{
… …
451 else 501 else
452 { 502 {
453#if CORO_PREFER_PERL_FUNCTIONS 503#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 504 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 505 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 506 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 507 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 508 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 509 SvREFCNT_dec (cp);
460#else 510#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 511 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 512#endif
463 } 513 }
464} 514}
465 515
466static void 516static void
… …
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 523 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
474 524
475 av = (AV *)mg->mg_obj; 525 av = (AV *)mg->mg_obj;
476 526
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 527 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 528 av_extend (av, AvFILLp (av) + 1);
479 529
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 530 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 531}
482 532
483/** load & save, init *******************************************************/ 533/** load & save, init *******************************************************/
534
535static void
536on_enterleave_call (pTHX_ SV *cb);
484 537
485static void 538static void
486load_perl (pTHX_ Coro__State c) 539load_perl (pTHX_ Coro__State c)
487{ 540{
488 perl_slots *slot = c->slot; 541 perl_slots *slot = c->slot;
489 c->slot = 0; 542 c->slot = 0;
490 543
491 PL_mainstack = c->mainstack; 544 PL_mainstack = c->mainstack;
492 545
493 GvSV (PL_defgv) = slot->defsv; 546 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav; 547 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv; 548 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv; 549 GvSV (irsgv) = slot->irsgv;
550 GvHV (PL_hintgv) = slot->hinthv;
497 551
498 #define VAR(name,type) PL_ ## name = slot->name; 552 #define VAR(name,type) PL_ ## name = slot->name;
499 # include "state.h" 553 # include "state.h"
500 #undef VAR 554 #undef VAR
501 555
… …
513 } 567 }
514 568
515 PUTBACK; 569 PUTBACK;
516 } 570 }
517 571
518 slf_frame = c->slf_frame; 572 slf_frame = c->slf_frame;
573 CORO_THROW = c->except;
574
575 if (expect_false (c->on_enter))
576 {
577 int i;
578
579 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581 }
519} 582}
520 583
521static void 584static void
522save_perl (pTHX_ Coro__State c) 585save_perl (pTHX_ Coro__State c)
523{ 586{
587 if (expect_false (c->on_leave))
588 {
589 int i;
590
591 for (i = AvFILLp (c->on_leave); i >= 0; --i)
592 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
593 }
594
595 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 596 c->slf_frame = slf_frame;
525 597
526 { 598 {
527 dSP; 599 dSP;
528 I32 cxix = cxstack_ix; 600 I32 cxix = cxstack_ix;
… …
585 c->mainstack = PL_mainstack; 657 c->mainstack = PL_mainstack;
586 658
587 { 659 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 660 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 661
590 slot->defav = GvAV (PL_defgv); 662 slot->defav = GvAV (PL_defgv);
591 slot->defsv = DEFSV; 663 slot->defsv = DEFSV;
592 slot->errsv = ERRSV; 664 slot->errsv = ERRSV;
593 slot->irsgv = GvSV (irsgv); 665 slot->irsgv = GvSV (irsgv);
666 slot->hinthv = GvHV (PL_hintgv);
594 667
595 #define VAR(name,type) slot->name = PL_ ## name; 668 #define VAR(name,type) slot->name = PL_ ## name;
596 # include "state.h" 669 # include "state.h"
597 #undef VAR 670 #undef VAR
598 } 671 }
… …
603 * of perl.c:init_stacks, except that it uses less memory 676 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 677 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 678 * not usually need a lot of stackspace.
606 */ 679 */
607#if CORO_PREFER_PERL_FUNCTIONS 680#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 681# define coro_init_stacks(thx) init_stacks ()
609#else 682#else
610static void 683static void
611coro_init_stacks (pTHX) 684coro_init_stacks (pTHX)
612{ 685{
613 PL_curstackinfo = new_stackinfo(32, 8); 686 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 749#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 750 Safefree (PL_retstack);
678#endif 751#endif
679} 752}
680 753
754#define CORO_RSS \
755 rss += sizeof (SYM (curstackinfo)); \
756 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
757 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
758 rss += SYM (tmps_max) * sizeof (SV *); \
759 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
760 rss += SYM (scopestack_max) * sizeof (I32); \
761 rss += SYM (savestack_max) * sizeof (ANY);
762
681static size_t 763static size_t
682coro_rss (pTHX_ struct coro *coro) 764coro_rss (pTHX_ struct coro *coro)
683{ 765{
684 size_t rss = sizeof (*coro); 766 size_t rss = sizeof (*coro);
685 767
686 if (coro->mainstack) 768 if (coro->mainstack)
687 { 769 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 770 if (coro->flags & CF_RUNNING)
692 { 771 {
693 slot = &tmp_slot; 772 #define SYM(sym) PL_ ## sym
694 773 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 774 #undef SYM
698 } 775 }
699 else 776 else
700 slot = coro->slot;
701
702 if (slot)
703 { 777 {
704 rss += sizeof (slot->curstackinfo); 778 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 779 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 780 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 781 }
716 } 782 }
717 783
718 return rss; 784 return rss;
719} 785}
… …
732#endif 798#endif
733 799
734/* 800/*
735 * This overrides the default magic get method of %SIG elements. 801 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 802 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 803 * and instead of trying to save and restore the hash elements, we just provide
738 * readback here. 804 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 805 */
743static int 806static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 807coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 808{
746 const char *s = MgPV_nolen_const (mg); 809 const char *s = MgPV_nolen_const (mg);
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 862 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 863
801 if (svp) 864 if (svp)
802 { 865 {
803 SV *old = *svp; 866 SV *old = *svp;
804 *svp = newSVsv (sv); 867 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 868 SvREFCNT_dec (old);
806 return 0; 869 return 0;
807 } 870 }
808 } 871 }
809 872
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 884slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 885{
823 return 0; 886 return 0;
824} 887}
825 888
826static void 889static int
890slf_check_repeat (pTHX_ struct CoroSLF *frame)
891{
892 return 1;
893}
894
895static UNOP coro_setup_op;
896
897static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 898coro_setup (pTHX_ struct coro *coro)
828{ 899{
829 /* 900 /*
830 * emulate part of the perl startup here. 901 * emulate part of the perl startup here.
831 */ 902 */
… …
833 904
834 PL_runops = RUNOPS_DEFAULT; 905 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 906 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 907 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 908 PL_comppad = 0;
909 PL_comppad_name = 0;
910 PL_comppad_name_fill = 0;
911 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 912 PL_curpm = 0;
839 PL_curpad = 0; 913 PL_curpad = 0;
840 PL_localizing = 0; 914 PL_localizing = 0;
841 PL_dirty = 0; 915 PL_dirty = 0;
842 PL_restartop = 0; 916 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 917#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 918 PL_parser = 0;
845#endif 919#endif
920 PL_hints = 0;
846 921
847 /* recreate the die/warn hooks */ 922 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 923 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 924 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
850 925
851 GvSV (PL_defgv) = newSV (0); 926 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 927 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 928 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 929 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
930 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 931 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 932 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 933
858 { 934 {
859 dSP; 935 dSP;
860 UNOP myop; 936 UNOP myop;
861 937
862 Zero (&myop, 1, UNOP); 938 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 939 myop.op_next = Nullop;
940 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 941 myop.op_flags = OPf_WANT_VOID;
865 942
866 PUSHMARK (SP); 943 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 944 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 945 PUTBACK;
869 PL_op = (OP *)&myop; 946 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 947 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 948 }
873 949
874 /* this newly created coroutine might be run on an existing cctx which most 950 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 951 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 952 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 953 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 954 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879}
880 955
956 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957 coro_setup_op.op_next = PL_op;
958 coro_setup_op.op_type = OP_ENTERSUB;
959 coro_setup_op.op_ppaddr = pp_slf;
960 /* no flags etc. required, as an init function won't be called */
961
962 PL_op = (OP *)&coro_setup_op;
963
964 /* copy throw, in case it was set before coro_setup */
965 CORO_THROW = coro->except;
966}
967
881static void 968static void
882coro_destruct (pTHX_ struct coro *coro) 969coro_unwind_stacks (pTHX)
883{ 970{
884 if (!IN_DESTRUCT) 971 if (!IN_DESTRUCT)
885 { 972 {
886 /* restore all saved variables and stuff */ 973 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 974 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 982 POPSTACK_TO (PL_mainstack);
896 983
897 /* unwind main stack */ 984 /* unwind main stack */
898 dounwind (-1); 985 dounwind (-1);
899 } 986 }
987}
988
989static void
990coro_destruct_perl (pTHX_ struct coro *coro)
991{
992 coro_unwind_stacks (aTHX);
900 993
901 SvREFCNT_dec (GvSV (PL_defgv)); 994 SvREFCNT_dec (GvSV (PL_defgv));
902 SvREFCNT_dec (GvAV (PL_defgv)); 995 SvREFCNT_dec (GvAV (PL_defgv));
903 SvREFCNT_dec (GvSV (PL_errgv)); 996 SvREFCNT_dec (GvSV (PL_errgv));
904 SvREFCNT_dec (PL_defoutgv); 997 SvREFCNT_dec (PL_defoutgv);
905 SvREFCNT_dec (PL_rs); 998 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv)); 999 SvREFCNT_dec (GvSV (irsgv));
1000 SvREFCNT_dec (GvHV (PL_hintgv));
907 1001
908 SvREFCNT_dec (PL_diehook); 1002 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 1003 SvREFCNT_dec (PL_warnhook);
910 1004
911 SvREFCNT_dec (coro->saved_deffh); 1005 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1006 SvREFCNT_dec (coro->rouse_cb);
1007 SvREFCNT_dec (coro->invoke_cb);
1008 SvREFCNT_dec (coro->invoke_av);
913 1009
914 coro_destruct_stacks (aTHX); 1010 coro_destruct_stacks (aTHX);
915} 1011}
916 1012
917INLINE void 1013INLINE void
… …
927static int 1023static int
928runops_trace (pTHX) 1024runops_trace (pTHX)
929{ 1025{
930 COP *oldcop = 0; 1026 COP *oldcop = 0;
931 int oldcxix = -2; 1027 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1028
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1029 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1030 {
937 PERL_ASYNC_CHECK (); 1031 PERL_ASYNC_CHECK ();
938 1032
939 if (cctx->flags & CC_TRACE_ALL) 1033 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1034 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1035 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1036 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1037 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1038 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1039 AV *av = newAV (); /* return values */
946 SV **cb; 1040 SV **cb;
… …
983 1077
984 if (PL_curcop != &PL_compiling) 1078 if (PL_curcop != &PL_compiling)
985 { 1079 {
986 SV **cb; 1080 SV **cb;
987 1081
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1082 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1083 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1084 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1085
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1086 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1087 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1088 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1089 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1090 SV *fullname = sv_2mortal (newSV (0));
998 1091
999 if (isGV (gv)) 1092 if (isGV (gv))
… …
1004 SAVETMPS; 1097 SAVETMPS;
1005 EXTEND (SP, 3); 1098 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1099 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1100 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1101 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1102 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1103 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1104 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1105 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1106 SPAGAIN;
1014 FREETMPS; 1107 FREETMPS;
… …
1017 } 1110 }
1018 1111
1019 oldcxix = cxstack_ix; 1112 oldcxix = cxstack_ix;
1020 } 1113 }
1021 1114
1022 if (cctx->flags & CC_TRACE_LINE) 1115 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1116 {
1024 dSP; 1117 dSP;
1025 1118
1026 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1120 ENTER;
… …
1046 1139
1047 TAINT_NOT; 1140 TAINT_NOT;
1048 return 0; 1141 return 0;
1049} 1142}
1050 1143
1144static struct CoroSLF cctx_ssl_frame;
1145
1051static void 1146static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1147slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1148{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1149 ta->prev = 0;
1056} 1150}
1057 1151
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1152static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1153slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1154{
1061/* also initialises PL_top_env */ 1155 *frame = cctx_ssl_frame;
1156
1157 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1158}
1159
1160/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1161static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1162cctx_prepare (pTHX)
1064{ 1163{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1164 PL_top_env = &PL_start_env;
1069 1165
1070 if (cctx->flags & CC_TRACE) 1166 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1167 PL_runops = runops_trace;
1072 1168
1073 Zero (&myop, 1, UNOP); 1169 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1170 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1171 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1172 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1173
1077 PUSHMARK (SP); 1174 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1175 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1176
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1177 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1178 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1179}
1086 1180
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1181/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1182INLINE void
1089transfer_tail (pTHX) 1183transfer_tail (pTHX)
… …
1108 /* normally we would need to skip the entersub here */ 1202 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1203 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1204 /* PL_nop = PL_nop->op_next */
1111 1205
1112 /* inject a fake subroutine call to cctx_init */ 1206 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1207 cctx_prepare (aTHX);
1114 1208
1115 /* cctx_run is the alternative tail of transfer() */ 1209 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1210 transfer_tail (aTHX);
1117 1211
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1212 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1213 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1214 perl_run (PL_curinterp);
1215 /*
1216 * Unfortunately, there is no way to get at the return values of the
1217 * coro body here, as perl_run destroys these
1218 */
1121 1219
1122 /* 1220 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1221 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1222 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1223 * reason for perl_run to return. We try to exit by jumping to the
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1224 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * coroutine as Coro has no such concept 1225 * coroutine as Coro has no such concept.
1226 * This actually isn't valid with the pthread backend, but OSes requiring
1227 * that backend are too broken to do it in a standards-compliant way.
1128 */ 1228 */
1129 PL_top_env = main_top_env; 1229 PL_top_env = main_top_env;
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1230 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1231 }
1132} 1232}
… …
1209cctx_destroy (coro_cctx *cctx) 1309cctx_destroy (coro_cctx *cctx)
1210{ 1310{
1211 if (!cctx) 1311 if (!cctx)
1212 return; 1312 return;
1213 1313
1314 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1315
1214 --cctx_count; 1316 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1317 coro_destroy (&cctx->cctx);
1216 1318
1217 /* coro_transfer creates new, empty cctx's */ 1319 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1320 if (cctx->sptr)
… …
1276/** coroutine switching *****************************************************/ 1378/** coroutine switching *****************************************************/
1277 1379
1278static void 1380static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1381transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1382{
1383 /* TODO: throwing up here is considered harmful */
1384
1281 if (expect_true (prev != next)) 1385 if (expect_true (prev != next))
1282 { 1386 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1387 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1388 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1389
1286 if (expect_false (next->flags & CF_RUNNING))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED)) 1390 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1391 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1392
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1393#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1394 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1395 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1396#endif
1296 } 1397 }
1297} 1398}
1298 1399
1299/* always use the TRANSFER macro */ 1400/* always use the TRANSFER macro */
1300static void NOINLINE 1401static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1402transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1403{
1303 dSTACKLEVEL; 1404 dSTACKLEVEL;
1304 1405
1305 /* sometimes transfer is only called to set idle_sp */ 1406 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1407 if (expect_false (!prev))
1307 { 1408 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1409 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1410 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1411 }
1311 else if (expect_true (prev != next)) 1412 else if (expect_true (prev != next))
1312 { 1413 {
1313 coro_cctx *prev__cctx; 1414 coro_cctx *cctx_prev;
1314 1415
1315 if (expect_false (prev->flags & CF_NEW)) 1416 if (expect_false (prev->flags & CF_NEW))
1316 { 1417 {
1317 /* create a new empty/source context */ 1418 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1419 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1420 prev->flags |= CF_RUNNING;
1321 } 1421 }
1322 1422
1323 prev->flags &= ~CF_RUNNING; 1423 prev->flags &= ~CF_RUNNING;
… …
1334 coro_setup (aTHX_ next); 1434 coro_setup (aTHX_ next);
1335 } 1435 }
1336 else 1436 else
1337 load_perl (aTHX_ next); 1437 load_perl (aTHX_ next);
1338 1438
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1439 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1440 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1441 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1442 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1443 && !force_cctx
1346 )) 1444 ))
1347 { 1445 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1446 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1447 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1448
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1449 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1450 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1451 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1452 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1453 next->cctx = cctx_get (aTHX);
1358 1454
1359 cctx_put (prev__cctx); 1455 cctx_put (cctx_current);
1360 } 1456 }
1457 else
1458 prev->cctx = cctx_current;
1361 1459
1362 ++next->usecount; 1460 ++next->usecount;
1363 1461
1364 if (expect_true (!next->cctx)) 1462 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1463 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1464
1367 if (expect_false (prev__cctx != next->cctx)) 1465 next->cctx = 0;
1466
1467 if (expect_false (cctx_prev != cctx_current))
1368 { 1468 {
1369 prev__cctx->top_env = PL_top_env; 1469 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1470 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1471 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1472 }
1373 1473
1374 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1375 } 1475 }
1376} 1476}
… …
1384coro_state_destroy (pTHX_ struct coro *coro) 1484coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1485{
1386 if (coro->flags & CF_DESTROYED) 1486 if (coro->flags & CF_DESTROYED)
1387 return 0; 1487 return 0;
1388 1488
1389 if (coro->on_destroy) 1489 if (coro->on_destroy && !PL_dirty)
1390 coro->on_destroy (aTHX_ coro); 1490 coro->on_destroy (aTHX_ coro);
1391 1491
1392 coro->flags |= CF_DESTROYED; 1492 coro->flags |= CF_DESTROYED;
1393 1493
1394 if (coro->flags & CF_READY) 1494 if (coro->flags & CF_READY)
… …
1398 --coro_nready; 1498 --coro_nready;
1399 } 1499 }
1400 else 1500 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1501 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1502
1403 if (coro->mainstack && coro->mainstack != main_mainstack) 1503 if (coro->mainstack
1504 && coro->mainstack != main_mainstack
1505 && coro->slot
1506 && !PL_dirty)
1404 { 1507 {
1405 struct coro temp; 1508 struct coro *current = SvSTATE_current;
1406 1509
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1510 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1408 1511
1409 save_perl (aTHX_ &temp); 1512 save_perl (aTHX_ current);
1410 load_perl (aTHX_ coro); 1513 load_perl (aTHX_ coro);
1411 1514
1412 coro_destruct (aTHX_ coro); 1515 coro_destruct_perl (aTHX_ coro);
1413 1516
1414 load_perl (aTHX_ &temp); 1517 load_perl (aTHX_ current);
1415 1518
1416 coro->slot = 0; 1519 coro->slot = 0;
1417 } 1520 }
1418 1521
1419 cctx_destroy (coro->cctx); 1522 cctx_destroy (coro->cctx);
1523 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1524 SvREFCNT_dec (coro->args);
1525 SvREFCNT_dec (CORO_THROW);
1421 1526
1422 if (coro->next) coro->next->prev = coro->prev; 1527 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1528 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1529 if (coro == coro_first) coro_first = coro->next;
1425 1530
… …
1479 1584
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1585 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1586 TRANSFER (ta, 1);
1482} 1587}
1483 1588
1589/*****************************************************************************/
1590/* gensub: simple closure generation utility */
1591
1592#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594/* create a closure from XS, returns a code reference */
1595/* the arg can be accessed via GENSUB_ARG from the callback */
1596/* the callback must use dXSARGS/XSRETURN */
1597static SV *
1598gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599{
1600 CV *cv = (CV *)newSV (0);
1601
1602 sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604 CvANON_on (cv);
1605 CvISXSUB_on (cv);
1606 CvXSUB (cv) = xsub;
1607 GENSUB_ARG = arg;
1608
1609 return newRV_noinc ((SV *)cv);
1610}
1611
1484/** Coro ********************************************************************/ 1612/** Coro ********************************************************************/
1485 1613
1486INLINE void 1614INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1615coro_enq (pTHX_ struct coro *coro)
1488{ 1616{
… …
1506{ 1634{
1507 struct coro *coro; 1635 struct coro *coro;
1508 SV *sv_hook; 1636 SV *sv_hook;
1509 void (*xs_hook)(void); 1637 void (*xs_hook)(void);
1510 1638
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1639 coro = SvSTATE (coro_sv);
1515 1640
1516 if (coro->flags & CF_READY) 1641 if (coro->flags & CF_READY)
1517 return 0; 1642 return 0;
1518 1643
… …
1531 ENTER; 1656 ENTER;
1532 SAVETMPS; 1657 SAVETMPS;
1533 1658
1534 PUSHMARK (SP); 1659 PUSHMARK (SP);
1535 PUTBACK; 1660 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1661 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1662
1539 FREETMPS; 1663 FREETMPS;
1540 LEAVE; 1664 LEAVE;
1541 } 1665 }
1542 1666
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1674api_is_ready (pTHX_ SV *coro_sv)
1551{ 1675{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1676 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1677}
1554 1678
1679/* expects to own a reference to next->hv */
1555INLINE void 1680INLINE void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1681prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1682{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1683 SV *prev_sv = SvRV (coro_current);
1684
1598 ta->prev = SvSTATE_hv (prev_sv); 1685 ta->prev = SvSTATE_hv (prev_sv);
1686 ta->next = next;
1687
1599 TRANSFER_CHECK (*ta); 1688 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1689
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1690 SvRV_set (coro_current, (SV *)next->hv);
1603 1691
1604 free_coro_mortal (aTHX); 1692 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1693 coro_mortal = prev_sv;
1606} 1694}
1607 1695
1696static void
1697prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698{
1699 for (;;)
1700 {
1701 SV *next_sv = coro_deq (aTHX);
1702
1703 if (expect_true (next_sv))
1704 {
1705 struct coro *next = SvSTATE_hv (next_sv);
1706
1707 /* cannot transfer to destroyed coros, skip and look for next */
1708 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1710 else
1711 {
1712 next->flags &= ~CF_READY;
1713 --coro_nready;
1714
1715 prepare_schedule_to (aTHX_ ta, next);
1716 break;
1717 }
1718 }
1719 else
1720 {
1721 /* nothing to schedule: call the idle handler */
1722 if (SvROK (sv_idle)
1723 && SvOBJECT (SvRV (sv_idle)))
1724 {
1725 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726 api_ready (aTHX_ SvRV (sv_idle));
1727 --coro_nready;
1728 }
1729 else
1730 {
1731 dSP;
1732
1733 ENTER;
1734 SAVETMPS;
1735
1736 PUSHMARK (SP);
1737 PUTBACK;
1738 call_sv (sv_idle, G_VOID | G_DISCARD);
1739
1740 FREETMPS;
1741 LEAVE;
1742 }
1743 }
1744 }
1745}
1746
1608INLINE void 1747INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1748prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1749{
1611 api_ready (aTHX_ coro_current); 1750 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1751 prepare_schedule (aTHX_ ta);
… …
1631{ 1770{
1632 struct coro_transfer_args ta; 1771 struct coro_transfer_args ta;
1633 1772
1634 prepare_schedule (aTHX_ &ta); 1773 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1774 TRANSFER (ta, 1);
1775}
1776
1777static void
1778api_schedule_to (pTHX_ SV *coro_sv)
1779{
1780 struct coro_transfer_args ta;
1781 struct coro *next = SvSTATE (coro_sv);
1782
1783 SvREFCNT_inc_NN (coro_sv);
1784 prepare_schedule_to (aTHX_ &ta, next);
1636} 1785}
1637 1786
1638static int 1787static int
1639api_cede (pTHX) 1788api_cede (pTHX)
1640{ 1789{
… …
1669static void 1818static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1819api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1820{
1672 struct coro *coro = SvSTATE (coro_sv); 1821 struct coro *coro = SvSTATE (coro_sv);
1673 1822
1823 if (coro->flags & CF_RUNNING)
1824 croak ("cannot enable tracing on a running coroutine, caught");
1825
1674 if (flags & CC_TRACE) 1826 if (flags & CC_TRACE)
1675 { 1827 {
1676 if (!coro->cctx) 1828 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1829 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1830 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1831 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1832
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1833 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1834 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1835 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1836 {
… …
1687 if (coro->flags & CF_RUNNING) 1839 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1840 PL_runops = RUNOPS_DEFAULT;
1689 else 1841 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1842 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1843 }
1844}
1845
1846static void
1847coro_call_on_destroy (pTHX_ struct coro *coro)
1848{
1849 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1850 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1851
1852 if (on_destroyp)
1853 {
1854 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1855
1856 while (AvFILLp (on_destroy) >= 0)
1857 {
1858 dSP; /* don't disturb outer sp */
1859 SV *cb = av_pop (on_destroy);
1860
1861 PUSHMARK (SP);
1862
1863 if (statusp)
1864 {
1865 int i;
1866 AV *status = (AV *)SvRV (*statusp);
1867 EXTEND (SP, AvFILLp (status) + 1);
1868
1869 for (i = 0; i <= AvFILLp (status); ++i)
1870 PUSHs (AvARRAY (status)[i]);
1871 }
1872
1873 PUTBACK;
1874 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1875 }
1876 }
1877}
1878
1879static void
1880slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1881{
1882 int i;
1883 HV *hv = (HV *)SvRV (coro_current);
1884 AV *av = newAV ();
1885
1886 av_extend (av, items - 1);
1887 for (i = 0; i < items; ++i)
1888 av_push (av, SvREFCNT_inc_NN (arg [i]));
1889
1890 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891
1892 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893 api_ready (aTHX_ sv_manager);
1894
1895 frame->prepare = prepare_schedule;
1896 frame->check = slf_check_repeat;
1897
1898 /* as a minor optimisation, we could unwind all stacks here */
1899 /* but that puts extra pressure on pp_slf, and is not worth much */
1900 /*coro_unwind_stacks (aTHX);*/
1901}
1902
1903/*****************************************************************************/
1904/* async pool handler */
1905
1906static int
1907slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1908{
1909 HV *hv = (HV *)SvRV (coro_current);
1910 struct coro *coro = (struct coro *)frame->data;
1911
1912 if (!coro->invoke_cb)
1913 return 1; /* loop till we have invoke */
1914 else
1915 {
1916 hv_store (hv, "desc", sizeof ("desc") - 1,
1917 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1918
1919 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1920
1921 {
1922 dSP;
1923 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1924 PUTBACK;
1925 }
1926
1927 SvREFCNT_dec (GvAV (PL_defgv));
1928 GvAV (PL_defgv) = coro->invoke_av;
1929 coro->invoke_av = 0;
1930
1931 return 0;
1932 }
1933}
1934
1935static void
1936slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1937{
1938 HV *hv = (HV *)SvRV (coro_current);
1939 struct coro *coro = SvSTATE_hv ((SV *)hv);
1940
1941 if (expect_true (coro->saved_deffh))
1942 {
1943 /* subsequent iteration */
1944 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1945 coro->saved_deffh = 0;
1946
1947 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1948 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1949 {
1950 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1951 coro->invoke_av = newAV ();
1952
1953 frame->prepare = prepare_nop;
1954 }
1955 else
1956 {
1957 av_clear (GvAV (PL_defgv));
1958 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1959
1960 coro->prio = 0;
1961
1962 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1963 api_trace (aTHX_ coro_current, 0);
1964
1965 frame->prepare = prepare_schedule;
1966 av_push (av_async_pool, SvREFCNT_inc (hv));
1967 }
1968 }
1969 else
1970 {
1971 /* first iteration, simply fall through */
1972 frame->prepare = prepare_nop;
1973 }
1974
1975 frame->check = slf_check_pool_handler;
1976 frame->data = (void *)coro;
1977}
1978
1979/*****************************************************************************/
1980/* rouse callback */
1981
1982#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1983
1984static void
1985coro_rouse_callback (pTHX_ CV *cv)
1986{
1987 dXSARGS;
1988 SV *data = (SV *)GENSUB_ARG;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 {
1992 /* first call, set args */
1993 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));
1692} 2376}
1693 2377
1694/*****************************************************************************/ 2378/*****************************************************************************/
1695/* PerlIO::cede */ 2379/* PerlIO::cede */
1696 2380
… …
1765 PerlIOBuf_get_cnt, 2449 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2450 PerlIOBuf_set_ptrcnt,
1767}; 2451};
1768 2452
1769/*****************************************************************************/ 2453/*****************************************************************************/
2454/* Coro::Semaphore & Coro::Signal */
1770 2455
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2456static SV *
1782pp_restore (pTHX) 2457coro_waitarray_new (pTHX_ int count)
1783{ 2458{
1784 SV **SP = PL_stack_base + slf_ax; 2459 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2460 AV *av = newAV ();
2461 SV **ary;
1785 2462
1786 PUSHMARK (SP); 2463 /* unfortunately, building manually saves memory */
1787 2464 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2465 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2466#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2467 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2468#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2469 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2470 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2471 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 2472#endif
2473 AvMAX (av) = 1;
2474 AvFILLp (av) = 0;
2475 ary [0] = newSViv (count);
1978 2476
1979 CvFLAGS (cv) |= CVf_SLF; 2477 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 2478}
2001 2479
2002/*****************************************************************************/ 2480/* semaphore */
2003 2481
2004static void 2482static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2483coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2484{
2007 SV *count_sv = AvARRAY (av)[0]; 2485 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2497 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2498 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2499 cb = av_shift (av);
2022 2500
2023 if (SvOBJECT (cb)) 2501 if (SvOBJECT (cb))
2502 {
2024 api_ready (aTHX_ cb); 2503 api_ready (aTHX_ cb);
2025 else 2504 --count;
2026 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 }
2027 2514
2028 SvREFCNT_dec (cb); 2515 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2516 }
2032} 2517}
2033 2518
2034static void 2519static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2520coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2522 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2523 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2524}
2040 2525
2041static int 2526static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2527slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2528{
2044 AV *av = (AV *)frame->data; 2529 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2530 SV *count_sv = AvARRAY (av)[0];
2046 2531
2532 /* if we are about to throw, don't actually acquire the lock, just throw */
2533 if (CORO_THROW)
2534 return 0;
2047 if (SvIVX (count_sv) > 0) 2535 else if (SvIVX (count_sv) > 0)
2048 { 2536 {
2049 SvSTATE_current->on_destroy = 0; 2537 SvSTATE_current->on_destroy = 0;
2538
2539 if (acquire)
2050 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
2051 return 0; 2544 return 0;
2052 } 2545 }
2053 else 2546 else
2054 { 2547 {
2055 int i; 2548 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2557 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2558 return 1;
2066 } 2559 }
2067} 2560}
2068 2561
2069static 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
2070slf_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)
2071{ 2576{
2072 AV *av = (AV *)SvRV (arg [0]); 2577 AV *av = (AV *)SvRV (arg [0]);
2073 2578
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2579 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2580 {
2076 frame->data = (void *)av; 2581 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2582 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2583 }
2080 else 2584 else
2081 { 2585 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2586 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2587
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2588 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2589 frame->prepare = prepare_schedule;
2086 2590
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2591 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2592 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2593 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2594 }
2595}
2092 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);
2093 frame->check = slf_check_semaphore_down; 2601 frame->check = slf_check_semaphore_down;
2602}
2094 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 }
2095} 2683}
2096 2684
2097/*****************************************************************************/ 2685/*****************************************************************************/
2686/* Coro::AIO */
2098 2687
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2688#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2689
2101/* create a closure from XS, returns a code reference */ 2690/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2691struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2692{
2107 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};
2108 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
2109 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);
2110 2712
2111 CvANON_on (cv); 2713 {
2112 CvISXSUB_on (cv); 2714 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2715
2116 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;
2117} 2848}
2118 2849
2119/*****************************************************************************/ 2850/*****************************************************************************/
2851
2852#if CORO_CLONE
2853# include "clone.c"
2854#endif
2120 2855
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2856MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 2857
2123PROTOTYPES: DISABLE 2858PROTOTYPES: DISABLE
2124 2859
… …
2129 coro_thx = PERL_GET_CONTEXT; 2864 coro_thx = PERL_GET_CONTEXT;
2130# endif 2865# endif
2131#endif 2866#endif
2132 BOOT_PAGESIZE; 2867 BOOT_PAGESIZE;
2133 2868
2869 cctx_current = cctx_new_empty ();
2870
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2871 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2872 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 2873
2137 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;
2138 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;
… …
2157 2894
2158 { 2895 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2896 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 2897
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2898 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 2899 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 2900
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2901 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 2902 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 2903 }
2169 2904
2170 coroapi.ver = CORO_API_VERSION; 2905 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 2906 coroapi.rev = CORO_API_REVISION;
2172 2907
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2926 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2927}
2193 2928
2194SV * 2929SV *
2195new (char *klass, ...) 2930new (char *klass, ...)
2931 ALIAS:
2932 Coro::new = 1
2196 CODE: 2933 CODE:
2197{ 2934{
2198 struct coro *coro; 2935 struct coro *coro;
2199 MAGIC *mg; 2936 MAGIC *mg;
2200 HV *hv; 2937 HV *hv;
2938 CV *cb;
2201 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 }
2202 2954
2203 Newz (0, coro, 1, struct coro); 2955 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2956 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2957 coro->flags = CF_NEW;
2206 2958
… …
2211 coro->hv = hv = newHV (); 2963 coro->hv = hv = newHV ();
2212 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);
2213 mg->mg_flags |= MGf_DUP; 2965 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2966 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2967
2968 if (items > 1)
2969 {
2216 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
2217 for (i = 1; i < items; i++) 2980 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2981 av_push (coro->args, newSVsv (ST (i)));
2982 }
2219} 2983}
2220 OUTPUT: 2984 OUTPUT:
2221 RETVAL 2985 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2986
2228void 2987void
2229transfer (...) 2988transfer (...)
2230 PROTOTYPE: $$ 2989 PROTOTYPE: $$
2231 CODE: 2990 CODE:
… …
2241void 3000void
2242_exit (int code) 3001_exit (int code)
2243 PROTOTYPE: $ 3002 PROTOTYPE: $
2244 CODE: 3003 CODE:
2245 _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
2246 3024
2247int 3025int
2248cctx_stacksize (int new_stacksize = 0) 3026cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 3027 PROTOTYPE: ;$
2250 CODE: 3028 CODE:
… …
2300 eval = 1 3078 eval = 1
2301 CODE: 3079 CODE:
2302{ 3080{
2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3081 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2304 { 3082 {
2305 struct coro temp; 3083 struct coro *current = SvSTATE_current;
2306 3084
2307 if (!(coro->flags & CF_RUNNING)) 3085 if (current != coro)
2308 { 3086 {
2309 PUTBACK; 3087 PUTBACK;
2310 save_perl (aTHX_ &temp); 3088 save_perl (aTHX_ current);
2311 load_perl (aTHX_ coro); 3089 load_perl (aTHX_ coro);
3090 SPAGAIN;
2312 } 3091 }
2313 3092
2314 {
2315 dSP;
2316 ENTER;
2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK; 3093 PUSHSTACK;
3094
2320 PUSHMARK (SP); 3095 PUSHMARK (SP);
3096 PUTBACK;
2321 3097
2322 if (ix) 3098 if (ix)
2323 eval_sv (coderef, 0); 3099 eval_sv (coderef, 0);
2324 else 3100 else
2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3101 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 3102
2327 POPSTACK; 3103 POPSTACK;
2328 SPAGAIN; 3104 SPAGAIN;
2329 FREETMPS;
2330 LEAVE;
2331 PUTBACK;
2332 }
2333 3105
2334 if (!(coro->flags & CF_RUNNING)) 3106 if (current != coro)
2335 { 3107 {
3108 PUTBACK;
2336 save_perl (aTHX_ coro); 3109 save_perl (aTHX_ coro);
2337 load_perl (aTHX_ &temp); 3110 load_perl (aTHX_ current);
2338 SPAGAIN; 3111 SPAGAIN;
2339 } 3112 }
2340 } 3113 }
2341} 3114}
2342 3115
… …
2346 ALIAS: 3119 ALIAS:
2347 is_ready = CF_READY 3120 is_ready = CF_READY
2348 is_running = CF_RUNNING 3121 is_running = CF_RUNNING
2349 is_new = CF_NEW 3122 is_new = CF_NEW
2350 is_destroyed = CF_DESTROYED 3123 is_destroyed = CF_DESTROYED
3124 is_suspended = CF_SUSPENDED
2351 CODE: 3125 CODE:
2352 RETVAL = boolSV (coro->flags & ix); 3126 RETVAL = boolSV (coro->flags & ix);
2353 OUTPUT: 3127 OUTPUT:
2354 RETVAL 3128 RETVAL
2355 3129
2356void 3130void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3131throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3132 PROTOTYPE: $;$
2359 CODE: 3133 CODE:
3134{
3135 struct coro *current = SvSTATE_current;
3136 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3137 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3138 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3139}
2362 3140
2363void 3141void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3142api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3143 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3144 C_ARGS: aTHX_ coro, flags
2367 3145
2368SV * 3146SV *
2369has_cctx (Coro::State coro) 3147has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3148 PROTOTYPE: $
2371 CODE: 3149 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3150 /* maybe manage the running flag differently */
3151 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3152 OUTPUT:
2374 RETVAL 3153 RETVAL
2375 3154
2376int 3155int
2377is_traced (Coro::State coro) 3156is_traced (Coro::State coro)
… …
2397 3176
2398void 3177void
2399force_cctx () 3178force_cctx ()
2400 PROTOTYPE: 3179 PROTOTYPE:
2401 CODE: 3180 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3181 cctx_current->idle_sp = 0;
2403 3182
2404void 3183void
2405swap_defsv (Coro::State self) 3184swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3185 PROTOTYPE: $
2407 ALIAS: 3186 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3194 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3195
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3196 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3197 }
2419 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
2420MODULE = Coro::State PACKAGE = Coro 3206MODULE = Coro::State PACKAGE = Coro
2421 3207
2422BOOT: 3208BOOT:
2423{ 3209{
2424 int i; 3210 int i;
2425 3211
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3212 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3213 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3214 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3215 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3216 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 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);
2432 3226
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3227 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3228
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3238
2445 { 3239 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3241
2448 coroapi.schedule = api_schedule; 3242 coroapi.schedule = api_schedule;
3243 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3244 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3245 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3246 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3247 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3248 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3249 coroapi.current = coro_current;
2455 3250
2456 GCoroAPI = &coroapi; 3251 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3252 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3253 SvREADONLY_on (sv);
2459 } 3254 }
2460} 3255}
3256
3257void
3258terminate (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3261
2462void 3262void
2463schedule (...) 3263schedule (...)
2464 CODE: 3264 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 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);
2466 3276
2467void 3277void
2468cede (...) 3278cede (...)
2469 CODE: 3279 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3280 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2525 CODE: 3335 CODE:
2526 RETVAL = coro_nready; 3336 RETVAL = coro_nready;
2527 OUTPUT: 3337 OUTPUT:
2528 RETVAL 3338 RETVAL
2529 3339
2530# for async_pool speedup
2531void 3340void
2532_pool_1 (SV *cb) 3341_pool_handler (...)
2533 CODE: 3342 CODE:
2534{ 3343 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541
2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 {
2563 av_fill (defav, len - 1);
2564 for (i = 0; i < len; ++i)
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2566 }
2567}
2568 3344
2569void 3345void
2570_pool_2 (SV *cb) 3346async_pool (SV *cv, ...)
2571 CODE:
2572{
2573 struct coro *coro = SvSTATE_current;
2574
2575 sv_setsv (cb, &PL_sv_undef);
2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $ 3347 PROTOTYPE: &@
2607 PPCODE: 3348 PPCODE:
2608{ 3349{
2609 AV *defav = GvAV (PL_defgv); 3350 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3351 AV *av = newAV ();
3352 SV *cb = ST (0);
2611 int i; 3353 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3354
2617 data->errorno = errno; 3355 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3356 for (i = 1; i < items; ++i)
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3357 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3358
2627 av_push (av, data_sv); 3359 if ((SV *)hv == &PL_sv_undef)
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 { 3360 {
2674 PUSHMARK (SP); 3361 PUSHMARK (SP);
3362 EXTEND (SP, 2);
3363 PUSHs (sv_Coro);
3364 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3365 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3366 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3367 SPAGAIN;
3368
3369 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3370 }
2679 3371
2680 --incede; 3372 {
3373 struct coro *coro = SvSTATE_hv (hv);
3374
3375 assert (!coro->invoke_cb);
3376 assert (!coro->invoke_av);
3377 coro->invoke_cb = SvREFCNT_inc (cb);
3378 coro->invoke_av = av;
3379 }
3380
3381 api_ready (aTHX_ (SV *)hv);
3382
3383 if (GIMME_V != G_VOID)
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3385 else
3386 SvREFCNT_dec (hv);
3387}
3388
3389SV *
3390rouse_cb ()
3391 PROTOTYPE:
3392 CODE:
3393 RETVAL = coro_new_rouse_cb (aTHX);
3394 OUTPUT:
3395 RETVAL
3396
3397void
3398rouse_wait (...)
3399 PROTOTYPE: ;$
3400 PPCODE:
3401 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3402
3403void
3404on_enter (SV *block)
3405 ALIAS:
3406 on_leave = 1
3407 PROTOTYPE: &
3408 CODE:
3409{
3410 struct coro *coro = SvSTATE_current;
3411 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3412
3413 block = (SV *)coro_sv_2cv (aTHX_ block);
3414
3415 if (!*avp)
3416 *avp = newAV ();
3417
3418 av_push (*avp, SvREFCNT_inc (block));
3419
3420 if (!ix)
3421 on_enterleave_call (aTHX_ block);
3422
3423 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3424 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3425 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
2681} 3426}
2682 3427
2683 3428
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3429MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3430
2686BOOT: 3431BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3432 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3433
3434
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3435MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3436
2691SV * 3437SV *
2692new (SV *klass, SV *count_ = 0) 3438new (SV *klass, SV *count = 0)
2693 CODE: 3439 CODE:
2694{ 3440 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3441 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3442 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3443 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3444 OUTPUT:
2699} 3445 RETVAL
3446
3447# helper for Coro::Channel and others
3448SV *
3449_alloc (int count)
3450 CODE:
3451 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3452 OUTPUT:
2701 RETVAL 3453 RETVAL
2702 3454
2703SV * 3455SV *
2704count (SV *self) 3456count (SV *self)
… …
2713 adjust = 1 3465 adjust = 1
2714 CODE: 3466 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3467 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3468
2717void 3469void
2718down (SV *self) 3470down (...)
2719 CODE: 3471 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3472 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3473
3474void
3475wait (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3478
2722void 3479void
2723try (SV *self) 3480try (SV *self)
2724 PPCODE: 3481 PPCODE:
2725{ 3482{
… …
2737 XSRETURN_NO; 3494 XSRETURN_NO;
2738} 3495}
2739 3496
2740void 3497void
2741waiters (SV *self) 3498waiters (SV *self)
2742 CODE: 3499 PPCODE:
2743{ 3500{
2744 AV *av = (AV *)SvRV (self); 3501 AV *av = (AV *)SvRV (self);
3502 int wcount = AvFILLp (av) + 1 - 1;
2745 3503
2746 if (GIMME_V == G_SCALAR) 3504 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3505 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3506 else
2749 { 3507 {
2750 int i; 3508 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3509 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3510 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3511 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3512 }
2755} 3513}
2756 3514
3515MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3516
3517void
3518_may_delete (SV *sem, int count, int extra_refs)
3519 PPCODE:
3520{
3521 AV *av = (AV *)SvRV (sem);
3522
3523 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3524 && AvFILLp (av) == 0 /* no waiters, just count */
3525 && SvIV (AvARRAY (av)[0]) == count)
3526 XSRETURN_YES;
3527
3528 XSRETURN_NO;
3529}
3530
3531MODULE = Coro::State PACKAGE = Coro::Signal
3532
3533SV *
3534new (SV *klass)
3535 CODE:
3536 RETVAL = sv_bless (
3537 coro_waitarray_new (aTHX_ 0),
3538 GvSTASH (CvGV (cv))
3539 );
3540 OUTPUT:
3541 RETVAL
3542
3543void
3544wait (...)
3545 CODE:
3546 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3547
3548void
3549broadcast (SV *self)
3550 CODE:
3551{
3552 AV *av = (AV *)SvRV (self);
3553 coro_signal_wake (aTHX_ av, AvFILLp (av));
3554}
3555
3556void
3557send (SV *self)
3558 CODE:
3559{
3560 AV *av = (AV *)SvRV (self);
3561
3562 if (AvFILLp (av))
3563 coro_signal_wake (aTHX_ av, 1);
3564 else
3565 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3566}
3567
3568IV
3569awaited (SV *self)
3570 CODE:
3571 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3572 OUTPUT:
3573 RETVAL
3574
3575
3576MODULE = Coro::State PACKAGE = Coro::AnyEvent
3577
3578BOOT:
3579 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3580
3581void
3582_schedule (...)
3583 CODE:
3584{
3585 static int incede;
3586
3587 api_cede_notself (aTHX);
3588
3589 ++incede;
3590 while (coro_nready >= incede && api_cede (aTHX))
3591 ;
3592
3593 sv_setsv (sv_activity, &PL_sv_undef);
3594 if (coro_nready >= incede)
3595 {
3596 PUSHMARK (SP);
3597 PUTBACK;
3598 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3599 }
3600
3601 --incede;
3602}
3603
3604
3605MODULE = Coro::State PACKAGE = Coro::AIO
3606
3607void
3608_register (char *target, char *proto, SV *req)
3609 CODE:
3610{
3611 CV *req_cv = coro_sv_2cv (aTHX_ req);
3612 /* newXSproto doesn't return the CV on 5.8 */
3613 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3614 sv_setpv ((SV *)slf_cv, proto);
3615 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3616}
3617

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