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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC vs.
Revision 1.347 by root, Wed Jun 10 00:00:02 2009 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
172static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 184static SV *rv_diehook;
175static SV *rv_warnhook; 185static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
177 187
178/* async_pool helper stuff */ 188/* async_pool helper stuff */
179static SV *sv_pool_rss; 189static SV *sv_pool_rss;
180static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
182 196
183/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
184static SV *sv_activity; 198static SV *sv_activity;
185 199
186static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
219 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 244};
226 245
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 247typedef struct
229{ 248{
230 SV *defsv; 249 SV *defsv;
231 AV *defav; 250 AV *defav;
232 SV *errsv; 251 SV *errsv;
233 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
234#define VAR(name,type) type name; 254#define VAR(name,type) type name;
235# include "state.h" 255# include "state.h"
236#undef VAR 256#undef VAR
237} perl_slots; 257} perl_slots;
238 258
… …
241/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
242struct coro { 262struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 264 coro_cctx *cctx;
245 265
266 /* ready queue */
267 struct coro *next_ready;
268
246 /* state data */ 269 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 270 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 271 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 272 perl_slots *slot; /* basically the saved sp */
250 273
274 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 275 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 276 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 277 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 278 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 279 void (*on_destroy)(pTHX_ struct coro *coro);
256 280
257 /* statistics */ 281 /* statistics */
258 int usecount; /* number of transfers to this coro */ 282 int usecount; /* number of transfers to this coro */
259 283
260 /* coro process data */ 284 /* coro process data */
261 int prio; 285 int prio;
262 SV *throw; /* exception to be thrown */ 286 SV *except; /* exception to be thrown */
287 SV *rouse_cb;
263 288
264 /* async_pool */ 289 /* async_pool */
265 SV *saved_deffh; 290 SV *saved_deffh;
291 SV *invoke_cb;
292 AV *invoke_av;
293
294 /* on_enter/on_leave */
295 AV *on_enter;
296 AV *on_leave;
266 297
267 /* linked list */ 298 /* linked list */
268 struct coro *next, *prev; 299 struct coro *next, *prev;
269}; 300};
270 301
… …
273 304
274/* the following variables are effectively part of the perl context */ 305/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 306/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 307/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 308static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 309
280/** Coro ********************************************************************/ 310/** Coro ********************************************************************/
281 311
282#define PRIO_MAX 3 312#define PRIO_MAX 3
283#define PRIO_HIGH 1 313#define PRIO_HIGH 1
… …
287#define PRIO_MIN -4 317#define PRIO_MIN -4
288 318
289/* for Coro.pm */ 319/* for Coro.pm */
290static SV *coro_current; 320static SV *coro_current;
291static SV *coro_readyhook; 321static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 322static struct coro *coro_ready [PRIO_MAX - PRIO_MIN + 1][2]; /* head|tail */
323static CV *cv_coro_run, *cv_coro_terminate;
293static struct coro *coro_first; 324static struct coro *coro_first;
294#define coro_nready coroapi.nready 325#define coro_nready coroapi.nready
295 326
296/** lowlevel stuff **********************************************************/ 327/** lowlevel stuff **********************************************************/
297 328
… …
323 get_hv (name, create); 354 get_hv (name, create);
324#endif 355#endif
325 return get_hv (name, create); 356 return get_hv (name, create);
326} 357}
327 358
359/* may croak */
360INLINE CV *
361coro_sv_2cv (pTHX_ SV *sv)
362{
363 HV *st;
364 GV *gvp;
365 CV *cv = sv_2cv (sv, &st, &gvp, 0);
366
367 if (!cv)
368 croak ("code reference expected");
369
370 return cv;
371}
372
373/*****************************************************************************/
374/* magic glue */
375
376#define CORO_MAGIC_type_cv 26
377#define CORO_MAGIC_type_state PERL_MAGIC_ext
378
379#define CORO_MAGIC_NN(sv, type) \
380 (expect_true (SvMAGIC (sv)->mg_type == type) \
381 ? SvMAGIC (sv) \
382 : mg_find (sv, type))
383
384#define CORO_MAGIC(sv, type) \
385 (expect_true (SvMAGIC (sv)) \
386 ? CORO_MAGIC_NN (sv, type) \
387 : 0)
388
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
391
392INLINE struct coro *
393SvSTATE_ (pTHX_ SV *coro)
394{
395 HV *stash;
396 MAGIC *mg;
397
398 if (SvROK (coro))
399 coro = SvRV (coro);
400
401 if (expect_false (SvTYPE (coro) != SVt_PVHV))
402 croak ("Coro::State object required");
403
404 stash = SvSTASH (coro);
405 if (expect_false (stash != coro_stash && stash != coro_state_stash))
406 {
407 /* very slow, but rare, check */
408 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
409 croak ("Coro::State object required");
410 }
411
412 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr;
414}
415
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
417
418/* faster than SvSTATE, but expects a coroutine hv */
419#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
420#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421
422/*****************************************************************************/
423/* padlist management and caching */
424
328static AV * 425static AV *
329coro_clone_padlist (pTHX_ CV *cv) 426coro_derive_padlist (pTHX_ CV *cv)
330{ 427{
331 AV *padlist = CvPADLIST (cv); 428 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 429 AV *newpadlist, *newpad;
333 430
334 newpadlist = newAV (); 431 newpadlist = newAV ();
… …
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 436 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 437#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 438 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 439 --AvFILLp (padlist);
343 440
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 441 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 442 av_store (newpadlist, 1, (SV *)newpad);
346 443
347 return newpadlist; 444 return newpadlist;
348} 445}
349 446
350static void 447static void
351free_padlist (pTHX_ AV *padlist) 448free_padlist (pTHX_ AV *padlist)
352{ 449{
353 /* may be during global destruction */ 450 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 451 if (!IN_DESTRUCT)
355 { 452 {
356 I32 i = AvFILLp (padlist); 453 I32 i = AvFILLp (padlist);
357 while (i >= 0) 454
455 while (i > 0) /* special-case index 0 */
358 { 456 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 457 /* we try to be extra-careful here */
360 if (svp) 458 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 459 I32 j = AvFILLp (av);
362 SV *sv; 460
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 461 while (j >= 0)
462 SvREFCNT_dec (AvARRAY (av)[j--]);
463
464 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 465 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 466 }
369 467
468 SvREFCNT_dec (AvARRAY (padlist)[0]);
469
470 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 471 SvREFCNT_dec ((SV*)padlist);
371 } 472 }
372} 473}
373 474
374static int 475static int
… …
383 484
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 485 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 486
386 return 0; 487 return 0;
387} 488}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 489
392static MGVTBL coro_cv_vtbl = { 490static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 491 0, 0, 0, 0,
394 coro_cv_free 492 coro_cv_free
395}; 493};
396
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 494
446/* the next two functions merely cache the padlists */ 495/* the next two functions merely cache the padlists */
447static void 496static void
448get_padlist (pTHX_ CV *cv) 497get_padlist (pTHX_ CV *cv)
449{ 498{
… …
455 else 504 else
456 { 505 {
457#if CORO_PREFER_PERL_FUNCTIONS 506#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 507 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 508 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 509 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 510 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 511 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 512 SvREFCNT_dec (cp);
464#else 513#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 514 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 515#endif
467 } 516 }
468} 517}
469 518
470static void 519static void
… …
477 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 526 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
478 527
479 av = (AV *)mg->mg_obj; 528 av = (AV *)mg->mg_obj;
480 529
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 530 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 531 av_extend (av, AvFILLp (av) + 1);
483 532
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 533 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 534}
486 535
487/** load & save, init *******************************************************/ 536/** load & save, init *******************************************************/
537
538static void
539on_enterleave_call (pTHX_ SV *cb);
488 540
489static void 541static void
490load_perl (pTHX_ Coro__State c) 542load_perl (pTHX_ Coro__State c)
491{ 543{
492 perl_slots *slot = c->slot; 544 perl_slots *slot = c->slot;
493 c->slot = 0; 545 c->slot = 0;
494 546
495 PL_mainstack = c->mainstack; 547 PL_mainstack = c->mainstack;
496 548
497 GvSV (PL_defgv) = slot->defsv; 549 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav; 550 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv; 551 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv; 552 GvSV (irsgv) = slot->irsgv;
553 GvHV (PL_hintgv) = slot->hinthv;
501 554
502 #define VAR(name,type) PL_ ## name = slot->name; 555 #define VAR(name,type) PL_ ## name = slot->name;
503 # include "state.h" 556 # include "state.h"
504 #undef VAR 557 #undef VAR
505 558
… …
518 571
519 PUTBACK; 572 PUTBACK;
520 } 573 }
521 574
522 slf_frame = c->slf_frame; 575 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 576 CORO_THROW = c->except;
577
578 if (expect_false (c->on_enter))
579 {
580 int i;
581
582 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
583 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
584 }
524} 585}
525 586
526static void 587static void
527save_perl (pTHX_ Coro__State c) 588save_perl (pTHX_ Coro__State c)
528{ 589{
529 c->throw = coro_throw; 590 if (expect_false (c->on_leave))
591 {
592 int i;
593
594 for (i = AvFILLp (c->on_leave); i >= 0; --i)
595 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
596 }
597
598 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 599 c->slf_frame = slf_frame;
531 600
532 { 601 {
533 dSP; 602 dSP;
534 I32 cxix = cxstack_ix; 603 I32 cxix = cxstack_ix;
… …
591 c->mainstack = PL_mainstack; 660 c->mainstack = PL_mainstack;
592 661
593 { 662 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 663 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 664
596 slot->defav = GvAV (PL_defgv); 665 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV; 666 slot->defsv = DEFSV;
598 slot->errsv = ERRSV; 667 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv); 668 slot->irsgv = GvSV (irsgv);
669 slot->hinthv = GvHV (PL_hintgv);
600 670
601 #define VAR(name,type) slot->name = PL_ ## name; 671 #define VAR(name,type) slot->name = PL_ ## name;
602 # include "state.h" 672 # include "state.h"
603 #undef VAR 673 #undef VAR
604 } 674 }
… …
609 * of perl.c:init_stacks, except that it uses less memory 679 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 680 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 681 * not usually need a lot of stackspace.
612 */ 682 */
613#if CORO_PREFER_PERL_FUNCTIONS 683#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 684# define coro_init_stacks(thx) init_stacks ()
615#else 685#else
616static void 686static void
617coro_init_stacks (pTHX) 687coro_init_stacks (pTHX)
618{ 688{
619 PL_curstackinfo = new_stackinfo(32, 8); 689 PL_curstackinfo = new_stackinfo(32, 8);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 752#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 753 Safefree (PL_retstack);
684#endif 754#endif
685} 755}
686 756
757#define CORO_RSS \
758 rss += sizeof (SYM (curstackinfo)); \
759 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
760 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
761 rss += SYM (tmps_max) * sizeof (SV *); \
762 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
763 rss += SYM (scopestack_max) * sizeof (I32); \
764 rss += SYM (savestack_max) * sizeof (ANY);
765
687static size_t 766static size_t
688coro_rss (pTHX_ struct coro *coro) 767coro_rss (pTHX_ struct coro *coro)
689{ 768{
690 size_t rss = sizeof (*coro); 769 size_t rss = sizeof (*coro);
691 770
692 if (coro->mainstack) 771 if (coro->mainstack)
693 { 772 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 773 if (coro->flags & CF_RUNNING)
698 { 774 {
699 slot = &tmp_slot; 775 #define SYM(sym) PL_ ## sym
700 776 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 777 #undef SYM
704 } 778 }
705 else 779 else
706 slot = coro->slot;
707
708 if (slot)
709 { 780 {
710 rss += sizeof (slot->curstackinfo); 781 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 782 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 783 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 784 }
722 } 785 }
723 786
724 return rss; 787 return rss;
725} 788}
… …
738#endif 801#endif
739 802
740/* 803/*
741 * This overrides the default magic get method of %SIG elements. 804 * This overrides the default magic get method of %SIG elements.
742 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 805 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
743 * and instead of tryign to save and restore the hash elements, we just provide 806 * and instead of trying to save and restore the hash elements, we just provide
744 * readback here. 807 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 808 */
749static int 809static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 810coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 811{
752 const char *s = MgPV_nolen_const (mg); 812 const char *s = MgPV_nolen_const (mg);
… …
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 865 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 866
807 if (svp) 867 if (svp)
808 { 868 {
809 SV *old = *svp; 869 SV *old = *svp;
810 *svp = newSVsv (sv); 870 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 871 SvREFCNT_dec (old);
812 return 0; 872 return 0;
813 } 873 }
814 } 874 }
815 875
… …
826static int 886static int
827slf_check_nop (pTHX_ struct CoroSLF *frame) 887slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 888{
829 return 0; 889 return 0;
830} 890}
891
892static int
893slf_check_repeat (pTHX_ struct CoroSLF *frame)
894{
895 return 1;
896}
897
898static UNOP coro_setup_op;
831 899
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 900static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 901coro_setup (pTHX_ struct coro *coro)
834{ 902{
835 /* 903 /*
… …
839 907
840 PL_runops = RUNOPS_DEFAULT; 908 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 909 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 910 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 911 PL_comppad = 0;
912 PL_comppad_name = 0;
913 PL_comppad_name_fill = 0;
914 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 915 PL_curpm = 0;
845 PL_curpad = 0; 916 PL_curpad = 0;
846 PL_localizing = 0; 917 PL_localizing = 0;
847 PL_dirty = 0; 918 PL_dirty = 0;
848 PL_restartop = 0; 919 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 920#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 921 PL_parser = 0;
851#endif 922#endif
923 PL_hints = 0;
852 924
853 /* recreate the die/warn hooks */ 925 /* recreate the die/warn hooks */
854 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 926 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
855 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 927 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
856 928
857 GvSV (PL_defgv) = newSV (0); 929 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 930 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 931 GvSV (PL_errgv) = newSV (0);
860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 932 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
933 GvHV (PL_hintgv) = 0;
861 PL_rs = newSVsv (GvSV (irsgv)); 934 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 935 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 936
864 { 937 {
865 dSP; 938 dSP;
866 UNOP myop; 939 UNOP myop;
867 940
868 Zero (&myop, 1, UNOP); 941 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 942 myop.op_next = Nullop;
943 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 944 myop.op_flags = OPf_WANT_VOID;
871 945
872 PUSHMARK (SP); 946 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 947 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 948 PUTBACK;
875 PL_op = (OP *)&myop; 949 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 950 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 951 }
879 952
880 /* this newly created coroutine might be run on an existing cctx which most 953 /* this newly created coroutine might be run on an existing cctx which most
881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 954 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
882 */ 955 */
883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 956 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 957 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885 958
886 coro_throw = coro->throw; 959 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 960 coro_setup_op.op_next = PL_op;
961 coro_setup_op.op_type = OP_ENTERSUB;
962 coro_setup_op.op_ppaddr = pp_slf;
963 /* no flags etc. required, as an init function won't be called */
888 964
965 PL_op = (OP *)&coro_setup_op;
966
967 /* copy throw, in case it was set before coro_setup */
968 CORO_THROW = coro->except;
969}
970
889static void 971static void
890coro_destruct (pTHX_ struct coro *coro) 972coro_unwind_stacks (pTHX)
891{ 973{
892 if (!IN_DESTRUCT) 974 if (!IN_DESTRUCT)
893 { 975 {
894 /* restore all saved variables and stuff */ 976 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 977 LEAVE_SCOPE (0);
… …
903 POPSTACK_TO (PL_mainstack); 985 POPSTACK_TO (PL_mainstack);
904 986
905 /* unwind main stack */ 987 /* unwind main stack */
906 dounwind (-1); 988 dounwind (-1);
907 } 989 }
990}
991
992static void
993coro_destruct_perl (pTHX_ struct coro *coro)
994{
995 coro_unwind_stacks (aTHX);
908 996
909 SvREFCNT_dec (GvSV (PL_defgv)); 997 SvREFCNT_dec (GvSV (PL_defgv));
910 SvREFCNT_dec (GvAV (PL_defgv)); 998 SvREFCNT_dec (GvAV (PL_defgv));
911 SvREFCNT_dec (GvSV (PL_errgv)); 999 SvREFCNT_dec (GvSV (PL_errgv));
912 SvREFCNT_dec (PL_defoutgv); 1000 SvREFCNT_dec (PL_defoutgv);
913 SvREFCNT_dec (PL_rs); 1001 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv)); 1002 SvREFCNT_dec (GvSV (irsgv));
1003 SvREFCNT_dec (GvHV (PL_hintgv));
915 1004
916 SvREFCNT_dec (PL_diehook); 1005 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook); 1006 SvREFCNT_dec (PL_warnhook);
918 1007
919 SvREFCNT_dec (coro->saved_deffh); 1008 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1009 SvREFCNT_dec (coro->rouse_cb);
1010 SvREFCNT_dec (coro->invoke_cb);
1011 SvREFCNT_dec (coro->invoke_av);
921 1012
922 coro_destruct_stacks (aTHX); 1013 coro_destruct_stacks (aTHX);
923} 1014}
924 1015
925INLINE void 1016INLINE void
… …
935static int 1026static int
936runops_trace (pTHX) 1027runops_trace (pTHX)
937{ 1028{
938 COP *oldcop = 0; 1029 COP *oldcop = 0;
939 int oldcxix = -2; 1030 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1031
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1032 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1033 {
945 PERL_ASYNC_CHECK (); 1034 PERL_ASYNC_CHECK ();
946 1035
947 if (cctx->flags & CC_TRACE_ALL) 1036 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1037 {
949 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1038 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
950 { 1039 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1040 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1041 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1042 AV *av = newAV (); /* return values */
954 SV **cb; 1043 SV **cb;
… …
991 1080
992 if (PL_curcop != &PL_compiling) 1081 if (PL_curcop != &PL_compiling)
993 { 1082 {
994 SV **cb; 1083 SV **cb;
995 1084
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1085 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1086 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1087 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1088
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1089 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1090 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1091 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1092 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1093 SV *fullname = sv_2mortal (newSV (0));
1006 1094
1007 if (isGV (gv)) 1095 if (isGV (gv))
… …
1012 SAVETMPS; 1100 SAVETMPS;
1013 EXTEND (SP, 3); 1101 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1102 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1103 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1104 PUSHs (fullname);
1017 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1105 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1018 PUTBACK; 1106 PUTBACK;
1019 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1107 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1020 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1108 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1021 SPAGAIN; 1109 SPAGAIN;
1022 FREETMPS; 1110 FREETMPS;
… …
1025 } 1113 }
1026 1114
1027 oldcxix = cxstack_ix; 1115 oldcxix = cxstack_ix;
1028 } 1116 }
1029 1117
1030 if (cctx->flags & CC_TRACE_LINE) 1118 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1119 {
1032 dSP; 1120 dSP;
1033 1121
1034 PL_runops = RUNOPS_DEFAULT; 1122 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1123 ENTER;
… …
1054 1142
1055 TAINT_NOT; 1143 TAINT_NOT;
1056 return 0; 1144 return 0;
1057} 1145}
1058 1146
1147static struct CoroSLF cctx_ssl_frame;
1148
1059static void 1149static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1150slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1151{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1152 ta->prev = 0;
1064} 1153}
1065 1154
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1155static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1156slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1157{
1069/* also initialises PL_top_env */ 1158 *frame = cctx_ssl_frame;
1159
1160 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1161}
1162
1163/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1070static void NOINLINE 1164static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1165cctx_prepare (pTHX)
1072{ 1166{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1167 PL_top_env = &PL_start_env;
1077 1168
1078 if (cctx->flags & CC_TRACE) 1169 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1170 PL_runops = runops_trace;
1080 1171
1081 Zero (&myop, 1, UNOP); 1172 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1173 * that can lead to creation of a new cctx */
1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1174 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1175 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1084 1176
1085 PUSHMARK (SP); 1177 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1178 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1179
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1180 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1181 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1182}
1094 1183
1095/* the tail of transfer: execute stuff we can only do after a transfer */ 1184/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void 1185INLINE void
1097transfer_tail (pTHX) 1186transfer_tail (pTHX)
… …
1116 /* normally we would need to skip the entersub here */ 1205 /* normally we would need to skip the entersub here */
1117 /* not doing so will re-execute it, which is exactly what we want */ 1206 /* not doing so will re-execute it, which is exactly what we want */
1118 /* PL_nop = PL_nop->op_next */ 1207 /* PL_nop = PL_nop->op_next */
1119 1208
1120 /* inject a fake subroutine call to cctx_init */ 1209 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1210 cctx_prepare (aTHX);
1122 1211
1123 /* cctx_run is the alternative tail of transfer() */ 1212 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1213 transfer_tail (aTHX);
1125 1214
1126 /* somebody or something will hit me for both perl_run and PL_restartop */ 1215 /* somebody or something will hit me for both perl_run and PL_restartop */
1127 PL_restartop = PL_op; 1216 PL_restartop = PL_op;
1128 perl_run (PL_curinterp); 1217 perl_run (PL_curinterp);
1218 /*
1219 * Unfortunately, there is no way to get at the return values of the
1220 * coro body here, as perl_run destroys these
1221 */
1129 1222
1130 /* 1223 /*
1131 * If perl-run returns we assume exit() was being called or the coro 1224 * If perl-run returns we assume exit() was being called or the coro
1132 * fell off the end, which seems to be the only valid (non-bug) 1225 * fell off the end, which seems to be the only valid (non-bug)
1133 * reason for perl_run to return. We try to exit by jumping to the 1226 * reason for perl_run to return. We try to exit by jumping to the
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1227 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * coroutine as Coro has no such concept 1228 * coroutine as Coro has no such concept.
1229 * This actually isn't valid with the pthread backend, but OSes requiring
1230 * that backend are too broken to do it in a standards-compliant way.
1136 */ 1231 */
1137 PL_top_env = main_top_env; 1232 PL_top_env = main_top_env;
1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1233 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 } 1234 }
1140} 1235}
… …
1217cctx_destroy (coro_cctx *cctx) 1312cctx_destroy (coro_cctx *cctx)
1218{ 1313{
1219 if (!cctx) 1314 if (!cctx)
1220 return; 1315 return;
1221 1316
1317 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1318
1222 --cctx_count; 1319 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1320 coro_destroy (&cctx->cctx);
1224 1321
1225 /* coro_transfer creates new, empty cctx's */ 1322 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1323 if (cctx->sptr)
… …
1289 /* TODO: throwing up here is considered harmful */ 1386 /* TODO: throwing up here is considered harmful */
1290 1387
1291 if (expect_true (prev != next)) 1388 if (expect_true (prev != next))
1292 { 1389 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1390 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1391 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1295 1392
1296 if (expect_false (next->flags & CF_RUNNING))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED)) 1393 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1394 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1301 1395
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1396#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1397 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1398 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1305#endif 1399#endif
… …
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1405transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1406{
1313 dSTACKLEVEL; 1407 dSTACKLEVEL;
1314 1408
1315 /* sometimes transfer is only called to set idle_sp */ 1409 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1410 if (expect_false (!prev))
1317 { 1411 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1412 cctx_current->idle_sp = STACKLEVEL;
1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1413 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1320 } 1414 }
1321 else if (expect_true (prev != next)) 1415 else if (expect_true (prev != next))
1322 { 1416 {
1323 coro_cctx *prev__cctx; 1417 coro_cctx *cctx_prev;
1324 1418
1325 if (expect_false (prev->flags & CF_NEW)) 1419 if (expect_false (prev->flags & CF_NEW))
1326 { 1420 {
1327 /* create a new empty/source context */ 1421 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1422 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1423 prev->flags |= CF_RUNNING;
1331 } 1424 }
1332 1425
1333 prev->flags &= ~CF_RUNNING; 1426 prev->flags &= ~CF_RUNNING;
… …
1344 coro_setup (aTHX_ next); 1437 coro_setup (aTHX_ next);
1345 } 1438 }
1346 else 1439 else
1347 load_perl (aTHX_ next); 1440 load_perl (aTHX_ next);
1348 1441
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1442 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1443 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1444 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1445 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1446 && !force_cctx
1356 )) 1447 ))
1357 { 1448 {
1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1449 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1450 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1360 1451
1361 prev->cctx = 0;
1362
1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1452 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1453 /* without this the next cctx_get might destroy the running cctx while still in use */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1454 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1455 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1456 next->cctx = cctx_get (aTHX);
1368 1457
1369 cctx_put (prev__cctx); 1458 cctx_put (cctx_current);
1370 } 1459 }
1460 else
1461 prev->cctx = cctx_current;
1371 1462
1372 ++next->usecount; 1463 ++next->usecount;
1373 1464
1374 if (expect_true (!next->cctx)) 1465 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1466 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1467
1377 if (expect_false (prev__cctx != next->cctx)) 1468 next->cctx = 0;
1469
1470 if (expect_false (cctx_prev != cctx_current))
1378 { 1471 {
1379 prev__cctx->top_env = PL_top_env; 1472 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1473 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1474 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1475 }
1383 1476
1384 transfer_tail (aTHX); 1477 transfer_tail (aTHX);
1385 } 1478 }
1386} 1479}
… …
1394coro_state_destroy (pTHX_ struct coro *coro) 1487coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1488{
1396 if (coro->flags & CF_DESTROYED) 1489 if (coro->flags & CF_DESTROYED)
1397 return 0; 1490 return 0;
1398 1491
1399 if (coro->on_destroy) 1492 if (coro->on_destroy && !PL_dirty)
1400 coro->on_destroy (aTHX_ coro); 1493 coro->on_destroy (aTHX_ coro);
1401 1494
1402 coro->flags |= CF_DESTROYED; 1495 coro->flags |= CF_DESTROYED;
1403 1496
1404 if (coro->flags & CF_READY) 1497 if (coro->flags & CF_READY)
… …
1408 --coro_nready; 1501 --coro_nready;
1409 } 1502 }
1410 else 1503 else
1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1504 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412 1505
1413 if (coro->mainstack && coro->mainstack != main_mainstack) 1506 if (coro->mainstack
1507 && coro->mainstack != main_mainstack
1508 && coro->slot
1509 && !PL_dirty)
1414 { 1510 {
1415 struct coro temp; 1511 struct coro *current = SvSTATE_current;
1416 1512
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1513 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1418 1514
1419 save_perl (aTHX_ &temp); 1515 save_perl (aTHX_ current);
1420 load_perl (aTHX_ coro); 1516 load_perl (aTHX_ coro);
1421 1517
1422 coro_destruct (aTHX_ coro); 1518 coro_destruct_perl (aTHX_ coro);
1423 1519
1424 load_perl (aTHX_ &temp); 1520 load_perl (aTHX_ current);
1425 1521
1426 coro->slot = 0; 1522 coro->slot = 0;
1427 } 1523 }
1428 1524
1429 cctx_destroy (coro->cctx); 1525 cctx_destroy (coro->cctx);
1526 SvREFCNT_dec (coro->startcv);
1430 SvREFCNT_dec (coro->args); 1527 SvREFCNT_dec (coro->args);
1528 SvREFCNT_dec (CORO_THROW);
1431 1529
1432 if (coro->next) coro->next->prev = coro->prev; 1530 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1531 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1532 if (coro == coro_first) coro_first = coro->next;
1435 1533
… …
1489 1587
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1588 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1589 TRANSFER (ta, 1);
1492} 1590}
1493 1591
1592/*****************************************************************************/
1593/* gensub: simple closure generation utility */
1594
1595#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1596
1597/* create a closure from XS, returns a code reference */
1598/* the arg can be accessed via GENSUB_ARG from the callback */
1599/* the callback must use dXSARGS/XSRETURN */
1600static SV *
1601gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1602{
1603 CV *cv = (CV *)newSV (0);
1604
1605 sv_upgrade ((SV *)cv, SVt_PVCV);
1606
1607 CvANON_on (cv);
1608 CvISXSUB_on (cv);
1609 CvXSUB (cv) = xsub;
1610 GENSUB_ARG = arg;
1611
1612 return newRV_noinc ((SV *)cv);
1613}
1614
1494/** Coro ********************************************************************/ 1615/** Coro ********************************************************************/
1495 1616
1496INLINE void 1617INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1618coro_enq (pTHX_ struct coro *coro)
1498{ 1619{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1620 struct coro **ready = coro_ready [coro->prio - PRIO_MIN];
1500}
1501 1621
1502INLINE SV * 1622 SvREFCNT_inc_NN (coro->hv);
1623
1624 coro->next_ready = 0;
1625 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1626 ready [1] = coro;
1627}
1628
1629INLINE struct coro *
1503coro_deq (pTHX) 1630coro_deq (pTHX)
1504{ 1631{
1505 int prio; 1632 int prio;
1506 1633
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1634 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1635 {
1509 return av_shift (coro_ready [prio]); 1636 struct coro **ready = coro_ready [prio];
1510 1637
1511 return 0; 1638 if (ready [0])
1639 {
1640 struct coro *coro = ready [0];
1641 ready [0] = coro->next_ready;
1642 return coro;
1643 }
1644 }
1512} 1645}
1513 1646
1514static int 1647static int
1515api_ready (pTHX_ SV *coro_sv) 1648api_ready (pTHX_ SV *coro_sv)
1516{ 1649{
1517 struct coro *coro; 1650 struct coro *coro;
1518 SV *sv_hook; 1651 SV *sv_hook;
1519 void (*xs_hook)(void); 1652 void (*xs_hook)(void);
1520 1653
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1654 coro = SvSTATE (coro_sv);
1525 1655
1526 if (coro->flags & CF_READY) 1656 if (coro->flags & CF_READY)
1527 return 0; 1657 return 0;
1528 1658
… …
1541 ENTER; 1671 ENTER;
1542 SAVETMPS; 1672 SAVETMPS;
1543 1673
1544 PUSHMARK (SP); 1674 PUSHMARK (SP);
1545 PUTBACK; 1675 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1676 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1677
1549 FREETMPS; 1678 FREETMPS;
1550 LEAVE; 1679 LEAVE;
1551 } 1680 }
1552 1681
… …
1560api_is_ready (pTHX_ SV *coro_sv) 1689api_is_ready (pTHX_ SV *coro_sv)
1561{ 1690{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1691 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1692}
1564 1693
1694/* expects to own a reference to next->hv */
1565INLINE void 1695INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1696prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1697{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1698 SV *prev_sv = SvRV (coro_current);
1699
1608 ta->prev = SvSTATE_hv (prev_sv); 1700 ta->prev = SvSTATE_hv (prev_sv);
1701 ta->next = next;
1702
1609 TRANSFER_CHECK (*ta); 1703 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1704
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1705 SvRV_set (coro_current, (SV *)next->hv);
1613 1706
1614 free_coro_mortal (aTHX); 1707 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1708 coro_mortal = prev_sv;
1616} 1709}
1617 1710
1711static void
1712prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1713{
1714 for (;;)
1715 {
1716 struct coro *next = coro_deq (aTHX);
1717
1718 if (expect_true (next))
1719 {
1720 /* cannot transfer to destroyed coros, skip and look for next */
1721 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1722 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1723 else
1724 {
1725 next->flags &= ~CF_READY;
1726 --coro_nready;
1727
1728 prepare_schedule_to (aTHX_ ta, next);
1729 break;
1730 }
1731 }
1732 else
1733 {
1734 /* nothing to schedule: call the idle handler */
1735 if (SvROK (sv_idle)
1736 && SvOBJECT (SvRV (sv_idle)))
1737 {
1738 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1739 api_ready (aTHX_ SvRV (sv_idle));
1740 --coro_nready;
1741 }
1742 else
1743 {
1744 dSP;
1745
1746 ENTER;
1747 SAVETMPS;
1748
1749 PUSHMARK (SP);
1750 PUTBACK;
1751 call_sv (sv_idle, G_VOID | G_DISCARD);
1752
1753 FREETMPS;
1754 LEAVE;
1755 }
1756 }
1757 }
1758}
1759
1618INLINE void 1760INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1761prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1762{
1621 api_ready (aTHX_ coro_current); 1763 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1764 prepare_schedule (aTHX_ ta);
… …
1641{ 1783{
1642 struct coro_transfer_args ta; 1784 struct coro_transfer_args ta;
1643 1785
1644 prepare_schedule (aTHX_ &ta); 1786 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1); 1787 TRANSFER (ta, 1);
1788}
1789
1790static void
1791api_schedule_to (pTHX_ SV *coro_sv)
1792{
1793 struct coro_transfer_args ta;
1794 struct coro *next = SvSTATE (coro_sv);
1795
1796 SvREFCNT_inc_NN (coro_sv);
1797 prepare_schedule_to (aTHX_ &ta, next);
1646} 1798}
1647 1799
1648static int 1800static int
1649api_cede (pTHX) 1801api_cede (pTHX)
1650{ 1802{
… …
1679static void 1831static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1832api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1833{
1682 struct coro *coro = SvSTATE (coro_sv); 1834 struct coro *coro = SvSTATE (coro_sv);
1683 1835
1836 if (coro->flags & CF_RUNNING)
1837 croak ("cannot enable tracing on a running coroutine, caught");
1838
1684 if (flags & CC_TRACE) 1839 if (flags & CC_TRACE)
1685 { 1840 {
1686 if (!coro->cctx) 1841 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1842 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1843 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1844 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 1845
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1846 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 1847 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1848 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 1849 {
… …
1697 if (coro->flags & CF_RUNNING) 1852 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 1853 PL_runops = RUNOPS_DEFAULT;
1699 else 1854 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 1855 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 1856 }
1857}
1858
1859static void
1860coro_call_on_destroy (pTHX_ struct coro *coro)
1861{
1862 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1863 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1864
1865 if (on_destroyp)
1866 {
1867 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1868
1869 while (AvFILLp (on_destroy) >= 0)
1870 {
1871 dSP; /* don't disturb outer sp */
1872 SV *cb = av_pop (on_destroy);
1873
1874 PUSHMARK (SP);
1875
1876 if (statusp)
1877 {
1878 int i;
1879 AV *status = (AV *)SvRV (*statusp);
1880 EXTEND (SP, AvFILLp (status) + 1);
1881
1882 for (i = 0; i <= AvFILLp (status); ++i)
1883 PUSHs (AvARRAY (status)[i]);
1884 }
1885
1886 PUTBACK;
1887 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1888 }
1889 }
1890}
1891
1892static void
1893slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1894{
1895 int i;
1896 HV *hv = (HV *)SvRV (coro_current);
1897 AV *av = newAV ();
1898
1899 av_extend (av, items - 1);
1900 for (i = 0; i < items; ++i)
1901 av_push (av, SvREFCNT_inc_NN (arg [i]));
1902
1903 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1904
1905 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1906 api_ready (aTHX_ sv_manager);
1907
1908 frame->prepare = prepare_schedule;
1909 frame->check = slf_check_repeat;
1910
1911 /* as a minor optimisation, we could unwind all stacks here */
1912 /* but that puts extra pressure on pp_slf, and is not worth much */
1913 /*coro_unwind_stacks (aTHX);*/
1914}
1915
1916/*****************************************************************************/
1917/* async pool handler */
1918
1919static int
1920slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1921{
1922 HV *hv = (HV *)SvRV (coro_current);
1923 struct coro *coro = (struct coro *)frame->data;
1924
1925 if (!coro->invoke_cb)
1926 return 1; /* loop till we have invoke */
1927 else
1928 {
1929 hv_store (hv, "desc", sizeof ("desc") - 1,
1930 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1931
1932 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1933
1934 {
1935 dSP;
1936 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1937 PUTBACK;
1938 }
1939
1940 SvREFCNT_dec (GvAV (PL_defgv));
1941 GvAV (PL_defgv) = coro->invoke_av;
1942 coro->invoke_av = 0;
1943
1944 return 0;
1945 }
1946}
1947
1948static void
1949slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1950{
1951 HV *hv = (HV *)SvRV (coro_current);
1952 struct coro *coro = SvSTATE_hv ((SV *)hv);
1953
1954 if (expect_true (coro->saved_deffh))
1955 {
1956 /* subsequent iteration */
1957 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1958 coro->saved_deffh = 0;
1959
1960 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1961 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1962 {
1963 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1964 coro->invoke_av = newAV ();
1965
1966 frame->prepare = prepare_nop;
1967 }
1968 else
1969 {
1970 av_clear (GvAV (PL_defgv));
1971 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1972
1973 coro->prio = 0;
1974
1975 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1976 api_trace (aTHX_ coro_current, 0);
1977
1978 frame->prepare = prepare_schedule;
1979 av_push (av_async_pool, SvREFCNT_inc (hv));
1980 }
1981 }
1982 else
1983 {
1984 /* first iteration, simply fall through */
1985 frame->prepare = prepare_nop;
1986 }
1987
1988 frame->check = slf_check_pool_handler;
1989 frame->data = (void *)coro;
1990}
1991
1992/*****************************************************************************/
1993/* rouse callback */
1994
1995#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1996
1997static void
1998coro_rouse_callback (pTHX_ CV *cv)
1999{
2000 dXSARGS;
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2004 {
2005 /* first call, set args */
2006 SV *coro = SvRV (data);
2007 AV *av = newAV ();
2008
2009 SvRV_set (data, (SV *)av);
2010
2011 /* better take a full copy of the arguments */
2012 while (items--)
2013 av_store (av, items, newSVsv (ST (items)));
2014
2015 api_ready (aTHX_ coro);
2016 SvREFCNT_dec (coro);
2017 }
2018
2019 XSRETURN_EMPTY;
2020}
2021
2022static int
2023slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2024{
2025 SV *data = (SV *)frame->data;
2026
2027 if (CORO_THROW)
2028 return 0;
2029
2030 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2031 return 1;
2032
2033 /* now push all results on the stack */
2034 {
2035 dSP;
2036 AV *av = (AV *)SvRV (data);
2037 int i;
2038
2039 EXTEND (SP, AvFILLp (av) + 1);
2040 for (i = 0; i <= AvFILLp (av); ++i)
2041 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2042
2043 /* we have stolen the elements, so set length to zero and free */
2044 AvFILLp (av) = -1;
2045 av_undef (av);
2046
2047 PUTBACK;
2048 }
2049
2050 return 0;
2051}
2052
2053static void
2054slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2055{
2056 SV *cb;
2057
2058 if (items)
2059 cb = arg [0];
2060 else
2061 {
2062 struct coro *coro = SvSTATE_current;
2063
2064 if (!coro->rouse_cb)
2065 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2066
2067 cb = sv_2mortal (coro->rouse_cb);
2068 coro->rouse_cb = 0;
2069 }
2070
2071 if (!SvROK (cb)
2072 || SvTYPE (SvRV (cb)) != SVt_PVCV
2073 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2074 croak ("Coro::rouse_wait called with illegal callback argument,");
2075
2076 {
2077 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2078 SV *data = (SV *)GENSUB_ARG;
2079
2080 frame->data = (void *)data;
2081 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2082 frame->check = slf_check_rouse_wait;
2083 }
2084}
2085
2086static SV *
2087coro_new_rouse_cb (pTHX)
2088{
2089 HV *hv = (HV *)SvRV (coro_current);
2090 struct coro *coro = SvSTATE_hv (hv);
2091 SV *data = newRV_inc ((SV *)hv);
2092 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2093
2094 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2095 SvREFCNT_dec (data); /* magicext increases the refcount */
2096
2097 SvREFCNT_dec (coro->rouse_cb);
2098 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2099
2100 return cb;
2101}
2102
2103/*****************************************************************************/
2104/* schedule-like-function opcode (SLF) */
2105
2106static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2107static const CV *slf_cv;
2108static SV **slf_argv;
2109static int slf_argc, slf_arga; /* count, allocated */
2110static I32 slf_ax; /* top of stack, for restore */
2111
2112/* this restores the stack in the case we patched the entersub, to */
2113/* recreate the stack frame as perl will on following calls */
2114/* since entersub cleared the stack */
2115static OP *
2116pp_restore (pTHX)
2117{
2118 int i;
2119 SV **SP = PL_stack_base + slf_ax;
2120
2121 PUSHMARK (SP);
2122
2123 EXTEND (SP, slf_argc + 1);
2124
2125 for (i = 0; i < slf_argc; ++i)
2126 PUSHs (sv_2mortal (slf_argv [i]));
2127
2128 PUSHs ((SV *)CvGV (slf_cv));
2129
2130 RETURNOP (slf_restore.op_first);
2131}
2132
2133static void
2134slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2135{
2136 SV **arg = (SV **)slf_frame.data;
2137
2138 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2139}
2140
2141static void
2142slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2143{
2144 if (items != 2)
2145 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2146
2147 frame->prepare = slf_prepare_transfer;
2148 frame->check = slf_check_nop;
2149 frame->data = (void *)arg; /* let's hope it will stay valid */
2150}
2151
2152static void
2153slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2154{
2155 frame->prepare = prepare_schedule;
2156 frame->check = slf_check_nop;
2157}
2158
2159static void
2160slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2161{
2162 struct coro *next = (struct coro *)slf_frame.data;
2163
2164 SvREFCNT_inc_NN (next->hv);
2165 prepare_schedule_to (aTHX_ ta, next);
2166}
2167
2168static void
2169slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2170{
2171 if (!items)
2172 croak ("Coro::schedule_to expects a coroutine argument, caught");
2173
2174 frame->data = (void *)SvSTATE (arg [0]);
2175 frame->prepare = slf_prepare_schedule_to;
2176 frame->check = slf_check_nop;
2177}
2178
2179static void
2180slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2181{
2182 api_ready (aTHX_ SvRV (coro_current));
2183
2184 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2185}
2186
2187static void
2188slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2189{
2190 frame->prepare = prepare_cede;
2191 frame->check = slf_check_nop;
2192}
2193
2194static void
2195slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2196{
2197 frame->prepare = prepare_cede_notself;
2198 frame->check = slf_check_nop;
2199}
2200
2201/*
2202 * these not obviously related functions are all rolled into one
2203 * function to increase chances that they all will call transfer with the same
2204 * stack offset
2205 * SLF stands for "schedule-like-function".
2206 */
2207static OP *
2208pp_slf (pTHX)
2209{
2210 I32 checkmark; /* mark SP to see how many elements check has pushed */
2211
2212 /* set up the slf frame, unless it has already been set-up */
2213 /* the latter happens when a new coro has been started */
2214 /* or when a new cctx was attached to an existing coroutine */
2215 if (expect_true (!slf_frame.prepare))
2216 {
2217 /* first iteration */
2218 dSP;
2219 SV **arg = PL_stack_base + TOPMARK + 1;
2220 int items = SP - arg; /* args without function object */
2221 SV *gv = *sp;
2222
2223 /* do a quick consistency check on the "function" object, and if it isn't */
2224 /* for us, divert to the real entersub */
2225 if (SvTYPE (gv) != SVt_PVGV
2226 || !GvCV (gv)
2227 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2228 return PL_ppaddr[OP_ENTERSUB](aTHX);
2229
2230 if (!(PL_op->op_flags & OPf_STACKED))
2231 {
2232 /* ampersand-form of call, use @_ instead of stack */
2233 AV *av = GvAV (PL_defgv);
2234 arg = AvARRAY (av);
2235 items = AvFILLp (av) + 1;
2236 }
2237
2238 /* now call the init function, which needs to set up slf_frame */
2239 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2240 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2241
2242 /* pop args */
2243 SP = PL_stack_base + POPMARK;
2244
2245 PUTBACK;
2246 }
2247
2248 /* now that we have a slf_frame, interpret it! */
2249 /* we use a callback system not to make the code needlessly */
2250 /* complicated, but so we can run multiple perl coros from one cctx */
2251
2252 do
2253 {
2254 struct coro_transfer_args ta;
2255
2256 slf_frame.prepare (aTHX_ &ta);
2257 TRANSFER (ta, 0);
2258
2259 checkmark = PL_stack_sp - PL_stack_base;
2260 }
2261 while (slf_frame.check (aTHX_ &slf_frame));
2262
2263 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2264
2265 /* exception handling */
2266 if (expect_false (CORO_THROW))
2267 {
2268 SV *exception = sv_2mortal (CORO_THROW);
2269
2270 CORO_THROW = 0;
2271 sv_setsv (ERRSV, exception);
2272 croak (0);
2273 }
2274
2275 /* return value handling - mostly like entersub */
2276 /* make sure we put something on the stack in scalar context */
2277 if (GIMME_V == G_SCALAR)
2278 {
2279 dSP;
2280 SV **bot = PL_stack_base + checkmark;
2281
2282 if (sp == bot) /* too few, push undef */
2283 bot [1] = &PL_sv_undef;
2284 else if (sp != bot + 1) /* too many, take last one */
2285 bot [1] = *sp;
2286
2287 SP = bot + 1;
2288
2289 PUTBACK;
2290 }
2291
2292 return NORMAL;
2293}
2294
2295static void
2296api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2297{
2298 int i;
2299 SV **arg = PL_stack_base + ax;
2300 int items = PL_stack_sp - arg + 1;
2301
2302 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2303
2304 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2305 && PL_op->op_ppaddr != pp_slf)
2306 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2307
2308 CvFLAGS (cv) |= CVf_SLF;
2309 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2310 slf_cv = cv;
2311
2312 /* we patch the op, and then re-run the whole call */
2313 /* we have to put the same argument on the stack for this to work */
2314 /* and this will be done by pp_restore */
2315 slf_restore.op_next = (OP *)&slf_restore;
2316 slf_restore.op_type = OP_CUSTOM;
2317 slf_restore.op_ppaddr = pp_restore;
2318 slf_restore.op_first = PL_op;
2319
2320 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2321
2322 if (PL_op->op_flags & OPf_STACKED)
2323 {
2324 if (items > slf_arga)
2325 {
2326 slf_arga = items;
2327 free (slf_argv);
2328 slf_argv = malloc (slf_arga * sizeof (SV *));
2329 }
2330
2331 slf_argc = items;
2332
2333 for (i = 0; i < items; ++i)
2334 slf_argv [i] = SvREFCNT_inc (arg [i]);
2335 }
2336 else
2337 slf_argc = 0;
2338
2339 PL_op->op_ppaddr = pp_slf;
2340 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2341
2342 PL_op = (OP *)&slf_restore;
2343}
2344
2345/*****************************************************************************/
2346/* dynamic wind */
2347
2348static void
2349on_enterleave_call (pTHX_ SV *cb)
2350{
2351 dSP;
2352
2353 PUSHSTACK;
2354
2355 PUSHMARK (SP);
2356 PUTBACK;
2357 call_sv (cb, G_VOID | G_DISCARD);
2358 SPAGAIN;
2359
2360 POPSTACK;
2361}
2362
2363static SV *
2364coro_avp_pop_and_free (pTHX_ AV **avp)
2365{
2366 AV *av = *avp;
2367 SV *res = av_pop (av);
2368
2369 if (AvFILLp (av) < 0)
2370 {
2371 *avp = 0;
2372 SvREFCNT_dec (av);
2373 }
2374
2375 return res;
2376}
2377
2378static void
2379coro_pop_on_enter (pTHX_ void *coro)
2380{
2381 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2382 SvREFCNT_dec (cb);
2383}
2384
2385static void
2386coro_pop_on_leave (pTHX_ void *coro)
2387{
2388 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2389 on_enterleave_call (aTHX_ sv_2mortal (cb));
1702} 2390}
1703 2391
1704/*****************************************************************************/ 2392/*****************************************************************************/
1705/* PerlIO::cede */ 2393/* PerlIO::cede */
1706 2394
… …
1775 PerlIOBuf_get_cnt, 2463 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2464 PerlIOBuf_set_ptrcnt,
1777}; 2465};
1778 2466
1779/*****************************************************************************/ 2467/*****************************************************************************/
2468/* Coro::Semaphore & Coro::Signal */
1780 2469
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2470static SV *
1791pp_restore (pTHX) 2471coro_waitarray_new (pTHX_ int count)
1792{ 2472{
1793 int i; 2473 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2474 AV *av = newAV ();
2475 SV **ary;
1795 2476
1796 PUSHMARK (SP); 2477 /* unfortunately, building manually saves memory */
2478 Newx (ary, 2, SV *);
2479 AvALLOC (av) = ary;
2480#if PERL_VERSION_ATLEAST (5,10,0)
2481 AvARRAY (av) = ary;
2482#else
2483 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2484 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2485 SvPVX ((SV *)av) = (char *)ary;
2486#endif
2487 AvMAX (av) = 1;
2488 AvFILLp (av) = 0;
2489 ary [0] = newSViv (count);
1797 2490
1798 EXTEND (SP, slf_argc + 1); 2491 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2492}
1807 2493
1808static void 2494/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
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 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 2495
2007static void 2496static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2497coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 2498{
2010 SV *count_sv = AvARRAY (av)[0]; 2499 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 2511 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 2512 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 2513 cb = av_shift (av);
2025 2514
2026 if (SvOBJECT (cb)) 2515 if (SvOBJECT (cb))
2516 {
2027 api_ready (aTHX_ cb); 2517 api_ready (aTHX_ cb);
2028 else 2518 --count;
2029 croak ("callbacks not yet supported"); 2519 }
2520 else if (SvTYPE (cb) == SVt_PVCV)
2521 {
2522 dSP;
2523 PUSHMARK (SP);
2524 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2525 PUTBACK;
2526 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2527 }
2030 2528
2031 SvREFCNT_dec (cb); 2529 SvREFCNT_dec (cb);
2032
2033 --count;
2034 } 2530 }
2035} 2531}
2036 2532
2037static void 2533static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2534coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2536 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2537 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042} 2538}
2043 2539
2044static int 2540static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2541slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 2542{
2047 AV *av = (AV *)frame->data; 2543 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 2544 SV *count_sv = AvARRAY (av)[0];
2049 2545
2546 /* if we are about to throw, don't actually acquire the lock, just throw */
2547 if (CORO_THROW)
2548 return 0;
2050 if (SvIVX (count_sv) > 0) 2549 else if (SvIVX (count_sv) > 0)
2051 { 2550 {
2052 SvSTATE_current->on_destroy = 0; 2551 SvSTATE_current->on_destroy = 0;
2552
2553 if (acquire)
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2554 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2555 else
2556 coro_semaphore_adjust (aTHX_ av, 0);
2557
2054 return 0; 2558 return 0;
2055 } 2559 }
2056 else 2560 else
2057 { 2561 {
2058 int i; 2562 int i;
… …
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2571 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1; 2572 return 1;
2069 } 2573 }
2070} 2574}
2071 2575
2072static void 2576static int
2577slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2578{
2579 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2580}
2581
2582static int
2583slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2584{
2585 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2586}
2587
2588static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2589slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{ 2590{
2075 AV *av = (AV *)SvRV (arg [0]); 2591 AV *av = (AV *)SvRV (arg [0]);
2076 2592
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 2593 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 2594 {
2079 frame->data = (void *)av; 2595 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 2596 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 2597 }
2083 else 2598 else
2084 { 2599 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2600 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 2601
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2602 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 2603 frame->prepare = prepare_schedule;
2089 2604
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 2605 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2606 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2607 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 } 2608 }
2609}
2095 2610
2611static void
2612slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2613{
2614 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2096 frame->check = slf_check_semaphore_down; 2615 frame->check = slf_check_semaphore_down;
2616}
2097 2617
2618static void
2619slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2620{
2621 if (items >= 2)
2622 {
2623 /* callback form */
2624 AV *av = (AV *)SvRV (arg [0]);
2625 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2626
2627 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2628
2629 if (SvIVX (AvARRAY (av)[0]) > 0)
2630 coro_semaphore_adjust (aTHX_ av, 0);
2631
2632 frame->prepare = prepare_nop;
2633 frame->check = slf_check_nop;
2634 }
2635 else
2636 {
2637 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2638 frame->check = slf_check_semaphore_wait;
2639 }
2640}
2641
2642/* signal */
2643
2644static void
2645coro_signal_wake (pTHX_ AV *av, int count)
2646{
2647 SvIVX (AvARRAY (av)[0]) = 0;
2648
2649 /* now signal count waiters */
2650 while (count > 0 && AvFILLp (av) > 0)
2651 {
2652 SV *cb;
2653
2654 /* swap first two elements so we can shift a waiter */
2655 cb = AvARRAY (av)[0];
2656 AvARRAY (av)[0] = AvARRAY (av)[1];
2657 AvARRAY (av)[1] = cb;
2658
2659 cb = av_shift (av);
2660
2661 api_ready (aTHX_ cb);
2662 sv_setiv (cb, 0); /* signal waiter */
2663 SvREFCNT_dec (cb);
2664
2665 --count;
2666 }
2667}
2668
2669static int
2670slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2671{
2672 /* if we are about to throw, also stop waiting */
2673 return SvROK ((SV *)frame->data) && !CORO_THROW;
2674}
2675
2676static void
2677slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2678{
2679 AV *av = (AV *)SvRV (arg [0]);
2680
2681 if (SvIVX (AvARRAY (av)[0]))
2682 {
2683 SvIVX (AvARRAY (av)[0]) = 0;
2684 frame->prepare = prepare_nop;
2685 frame->check = slf_check_nop;
2686 }
2687 else
2688 {
2689 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2690
2691 av_push (av, waiter);
2692
2693 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2694 frame->prepare = prepare_schedule;
2695 frame->check = slf_check_signal_wait;
2696 }
2098} 2697}
2099 2698
2100/*****************************************************************************/ 2699/*****************************************************************************/
2700/* Coro::AIO */
2101 2701
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2702#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 2703
2104/* create a closure from XS, returns a code reference */ 2704/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 2705struct io_state
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{ 2706{
2110 CV *cv = (CV *)NEWSV (0, 0); 2707 int errorno;
2708 I32 laststype; /* U16 in 5.10.0 */
2709 int laststatval;
2710 Stat_t statcache;
2711};
2111 2712
2713static void
2714coro_aio_callback (pTHX_ CV *cv)
2715{
2716 dXSARGS;
2717 AV *state = (AV *)GENSUB_ARG;
2718 SV *coro = av_pop (state);
2719 SV *data_sv = newSV (sizeof (struct io_state));
2720
2721 av_extend (state, items - 1);
2722
2112 sv_upgrade ((SV *)cv, SVt_PVCV); 2723 sv_upgrade (data_sv, SVt_PV);
2724 SvCUR_set (data_sv, sizeof (struct io_state));
2725 SvPOK_only (data_sv);
2113 2726
2114 CvANON_on (cv); 2727 {
2115 CvISXSUB_on (cv); 2728 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118 2729
2119 return newRV_noinc ((SV *)cv); 2730 data->errorno = errno;
2731 data->laststype = PL_laststype;
2732 data->laststatval = PL_laststatval;
2733 data->statcache = PL_statcache;
2734 }
2735
2736 /* now build the result vector out of all the parameters and the data_sv */
2737 {
2738 int i;
2739
2740 for (i = 0; i < items; ++i)
2741 av_push (state, SvREFCNT_inc_NN (ST (i)));
2742 }
2743
2744 av_push (state, data_sv);
2745
2746 api_ready (aTHX_ coro);
2747 SvREFCNT_dec (coro);
2748 SvREFCNT_dec ((AV *)state);
2749}
2750
2751static int
2752slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2753{
2754 AV *state = (AV *)frame->data;
2755
2756 /* if we are about to throw, return early */
2757 /* this does not cancel the aio request, but at least */
2758 /* it quickly returns */
2759 if (CORO_THROW)
2760 return 0;
2761
2762 /* one element that is an RV? repeat! */
2763 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2764 return 1;
2765
2766 /* restore status */
2767 {
2768 SV *data_sv = av_pop (state);
2769 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2770
2771 errno = data->errorno;
2772 PL_laststype = data->laststype;
2773 PL_laststatval = data->laststatval;
2774 PL_statcache = data->statcache;
2775
2776 SvREFCNT_dec (data_sv);
2777 }
2778
2779 /* push result values */
2780 {
2781 dSP;
2782 int i;
2783
2784 EXTEND (SP, AvFILLp (state) + 1);
2785 for (i = 0; i <= AvFILLp (state); ++i)
2786 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2787
2788 PUTBACK;
2789 }
2790
2791 return 0;
2792}
2793
2794static void
2795slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2796{
2797 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2798 SV *coro_hv = SvRV (coro_current);
2799 struct coro *coro = SvSTATE_hv (coro_hv);
2800
2801 /* put our coroutine id on the state arg */
2802 av_push (state, SvREFCNT_inc_NN (coro_hv));
2803
2804 /* first see whether we have a non-zero priority and set it as AIO prio */
2805 if (coro->prio)
2806 {
2807 dSP;
2808
2809 static SV *prio_cv;
2810 static SV *prio_sv;
2811
2812 if (expect_false (!prio_cv))
2813 {
2814 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2815 prio_sv = newSViv (0);
2816 }
2817
2818 PUSHMARK (SP);
2819 sv_setiv (prio_sv, coro->prio);
2820 XPUSHs (prio_sv);
2821
2822 PUTBACK;
2823 call_sv (prio_cv, G_VOID | G_DISCARD);
2824 }
2825
2826 /* now call the original request */
2827 {
2828 dSP;
2829 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2830 int i;
2831
2832 PUSHMARK (SP);
2833
2834 /* first push all args to the stack */
2835 EXTEND (SP, items + 1);
2836
2837 for (i = 0; i < items; ++i)
2838 PUSHs (arg [i]);
2839
2840 /* now push the callback closure */
2841 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2842
2843 /* now call the AIO function - we assume our request is uncancelable */
2844 PUTBACK;
2845 call_sv ((SV *)req, G_VOID | G_DISCARD);
2846 }
2847
2848 /* now that the requets is going, we loop toll we have a result */
2849 frame->data = (void *)state;
2850 frame->prepare = prepare_schedule;
2851 frame->check = slf_check_aio_req;
2852}
2853
2854static void
2855coro_aio_req_xs (pTHX_ CV *cv)
2856{
2857 dXSARGS;
2858
2859 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2860
2861 XSRETURN_EMPTY;
2120} 2862}
2121 2863
2122/*****************************************************************************/ 2864/*****************************************************************************/
2865
2866#if CORO_CLONE
2867# include "clone.c"
2868#endif
2123 2869
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2870MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 2871
2126PROTOTYPES: DISABLE 2872PROTOTYPES: DISABLE
2127 2873
… …
2132 coro_thx = PERL_GET_CONTEXT; 2878 coro_thx = PERL_GET_CONTEXT;
2133# endif 2879# endif
2134#endif 2880#endif
2135 BOOT_PAGESIZE; 2881 BOOT_PAGESIZE;
2136 2882
2883 cctx_current = cctx_new_empty ();
2884
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2885 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2886 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 2887
2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2888 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2889 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2160 2908
2161 { 2909 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2910 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 2911
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2912 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 2913 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 2914
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2915 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 2916 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 2917 }
2172 2918
2173 coroapi.ver = CORO_API_VERSION; 2919 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 2920 coroapi.rev = CORO_API_REVISION;
2175 2921
… …
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2940 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2195} 2941}
2196 2942
2197SV * 2943SV *
2198new (char *klass, ...) 2944new (char *klass, ...)
2945 ALIAS:
2946 Coro::new = 1
2199 CODE: 2947 CODE:
2200{ 2948{
2201 struct coro *coro; 2949 struct coro *coro;
2202 MAGIC *mg; 2950 MAGIC *mg;
2203 HV *hv; 2951 HV *hv;
2952 CV *cb;
2204 int i; 2953 int i;
2954
2955 if (items > 1)
2956 {
2957 cb = coro_sv_2cv (aTHX_ ST (1));
2958
2959 if (!ix)
2960 {
2961 if (CvISXSUB (cb))
2962 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2963
2964 if (!CvROOT (cb))
2965 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2966 }
2967 }
2205 2968
2206 Newz (0, coro, 1, struct coro); 2969 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV (); 2970 coro->args = newAV ();
2208 coro->flags = CF_NEW; 2971 coro->flags = CF_NEW;
2209 2972
… …
2214 coro->hv = hv = newHV (); 2977 coro->hv = hv = newHV ();
2215 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2978 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2216 mg->mg_flags |= MGf_DUP; 2979 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2980 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218 2981
2982 if (items > 1)
2983 {
2219 av_extend (coro->args, items - 1); 2984 av_extend (coro->args, items - 1 + ix - 1);
2985
2986 if (ix)
2987 {
2988 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2989 cb = cv_coro_run;
2990 }
2991
2992 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2993
2220 for (i = 1; i < items; i++) 2994 for (i = 2; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i))); 2995 av_push (coro->args, newSVsv (ST (i)));
2996 }
2222} 2997}
2223 OUTPUT: 2998 OUTPUT:
2224 RETVAL 2999 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 3000
2231void 3001void
2232transfer (...) 3002transfer (...)
2233 PROTOTYPE: $$ 3003 PROTOTYPE: $$
2234 CODE: 3004 CODE:
… …
2244void 3014void
2245_exit (int code) 3015_exit (int code)
2246 PROTOTYPE: $ 3016 PROTOTYPE: $
2247 CODE: 3017 CODE:
2248 _exit (code); 3018 _exit (code);
3019
3020SV *
3021clone (Coro::State coro)
3022 CODE:
3023{
3024#if CORO_CLONE
3025 struct coro *ncoro = coro_clone (aTHX_ coro);
3026 MAGIC *mg;
3027 /* TODO: too much duplication */
3028 ncoro->hv = newHV ();
3029 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3030 mg->mg_flags |= MGf_DUP;
3031 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3032#else
3033 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3034#endif
3035}
3036 OUTPUT:
3037 RETVAL
2249 3038
2250int 3039int
2251cctx_stacksize (int new_stacksize = 0) 3040cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 3041 PROTOTYPE: ;$
2253 CODE: 3042 CODE:
… …
2303 eval = 1 3092 eval = 1
2304 CODE: 3093 CODE:
2305{ 3094{
2306 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3095 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2307 { 3096 {
2308 struct coro temp; 3097 struct coro *current = SvSTATE_current;
2309 3098
2310 if (!(coro->flags & CF_RUNNING)) 3099 if (current != coro)
2311 { 3100 {
2312 PUTBACK; 3101 PUTBACK;
2313 save_perl (aTHX_ &temp); 3102 save_perl (aTHX_ current);
2314 load_perl (aTHX_ coro); 3103 load_perl (aTHX_ coro);
3104 SPAGAIN;
2315 } 3105 }
2316 3106
2317 {
2318 dSP;
2319 ENTER;
2320 SAVETMPS;
2321 PUTBACK;
2322 PUSHSTACK; 3107 PUSHSTACK;
3108
2323 PUSHMARK (SP); 3109 PUSHMARK (SP);
3110 PUTBACK;
2324 3111
2325 if (ix) 3112 if (ix)
2326 eval_sv (coderef, 0); 3113 eval_sv (coderef, 0);
2327 else 3114 else
2328 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3115 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2329 3116
2330 POPSTACK; 3117 POPSTACK;
2331 SPAGAIN; 3118 SPAGAIN;
2332 FREETMPS;
2333 LEAVE;
2334 PUTBACK;
2335 }
2336 3119
2337 if (!(coro->flags & CF_RUNNING)) 3120 if (current != coro)
2338 { 3121 {
3122 PUTBACK;
2339 save_perl (aTHX_ coro); 3123 save_perl (aTHX_ coro);
2340 load_perl (aTHX_ &temp); 3124 load_perl (aTHX_ current);
2341 SPAGAIN; 3125 SPAGAIN;
2342 } 3126 }
2343 } 3127 }
2344} 3128}
2345 3129
… …
2349 ALIAS: 3133 ALIAS:
2350 is_ready = CF_READY 3134 is_ready = CF_READY
2351 is_running = CF_RUNNING 3135 is_running = CF_RUNNING
2352 is_new = CF_NEW 3136 is_new = CF_NEW
2353 is_destroyed = CF_DESTROYED 3137 is_destroyed = CF_DESTROYED
3138 is_suspended = CF_SUSPENDED
2354 CODE: 3139 CODE:
2355 RETVAL = boolSV (coro->flags & ix); 3140 RETVAL = boolSV (coro->flags & ix);
2356 OUTPUT: 3141 OUTPUT:
2357 RETVAL 3142 RETVAL
2358 3143
… …
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3145throw (Coro::State self, SV *throw = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3146 PROTOTYPE: $;$
2362 CODE: 3147 CODE:
2363{ 3148{
2364 struct coro *current = SvSTATE_current; 3149 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3150 SV **throwp = self == current ? &CORO_THROW : &self->except;
2366 SvREFCNT_dec (*throwp); 3151 SvREFCNT_dec (*throwp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3152 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368} 3153}
2369 3154
2370void 3155void
… …
2374 3159
2375SV * 3160SV *
2376has_cctx (Coro::State coro) 3161has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3162 PROTOTYPE: $
2378 CODE: 3163 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3164 /* maybe manage the running flag differently */
3165 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3166 OUTPUT:
2381 RETVAL 3167 RETVAL
2382 3168
2383int 3169int
2384is_traced (Coro::State coro) 3170is_traced (Coro::State coro)
… …
2404 3190
2405void 3191void
2406force_cctx () 3192force_cctx ()
2407 PROTOTYPE: 3193 PROTOTYPE:
2408 CODE: 3194 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3195 cctx_current->idle_sp = 0;
2410 3196
2411void 3197void
2412swap_defsv (Coro::State self) 3198swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3199 PROTOTYPE: $
2414 ALIAS: 3200 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3208 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3209
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3210 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3211 }
2426 3212
3213void
3214cancel (Coro::State self)
3215 CODE:
3216 coro_state_destroy (aTHX_ self);
3217 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3218
3219
2427MODULE = Coro::State PACKAGE = Coro 3220MODULE = Coro::State PACKAGE = Coro
2428 3221
2429BOOT: 3222BOOT:
2430{ 3223{
2431 int i; 3224 int i;
2432 3225
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3226 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3227 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 3228 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3229 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3230 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 SvREADONLY_on (coro_current); 3231 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3232 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3233 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3234 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3235
3236 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3237 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3238 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3239 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2439 3240
2440 coro_stash = gv_stashpv ("Coro", TRUE); 3241 coro_stash = gv_stashpv ("Coro", TRUE);
2441 3242
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3243 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3244 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
2444 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3245 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
2445 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3246 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
2446 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3247 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
2447 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3248 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
2448 3249
2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2450 coro_ready[i] = newAV ();
2451
2452 { 3250 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3251 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 3252
2455 coroapi.schedule = api_schedule; 3253 coroapi.schedule = api_schedule;
3254 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 3255 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 3256 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 3257 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 3258 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 3259 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 3260 coroapi.current = coro_current;
2462 3261
2463 GCoroAPI = &coroapi; 3262 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 3263 sv_setiv (sv, (IV)&coroapi);
2465 SvREADONLY_on (sv); 3264 SvREADONLY_on (sv);
2466 } 3265 }
2467} 3266}
3267
3268void
3269terminate (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2468 3272
2469void 3273void
2470schedule (...) 3274schedule (...)
2471 CODE: 3275 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3276 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3277
3278void
3279schedule_to (...)
3280 CODE:
3281 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3282
3283void
3284cede_to (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2473 3287
2474void 3288void
2475cede (...) 3289cede (...)
2476 CODE: 3290 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 3291 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2532 CODE: 3346 CODE:
2533 RETVAL = coro_nready; 3347 RETVAL = coro_nready;
2534 OUTPUT: 3348 OUTPUT:
2535 RETVAL 3349 RETVAL
2536 3350
2537# for async_pool speedup
2538void 3351void
2539_pool_1 (SV *cb) 3352suspend (Coro::State self)
3353 PROTOTYPE: $
2540 CODE: 3354 CODE:
2541{ 3355 self->flags |= CF_SUSPENDED;
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548
2549 if (!invoke)
2550 {
2551 SV *old = PL_diehook;
2552 PL_diehook = 0;
2553 SvREFCNT_dec (old);
2554 croak ("\3async_pool terminate\2\n");
2555 }
2556
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 {
2570 av_fill (defav, len - 1);
2571 for (i = 0; i < len; ++i)
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2573 }
2574}
2575 3356
2576void 3357void
2577_pool_2 (SV *cb) 3358resume (Coro::State self)
3359 PROTOTYPE: $
2578 CODE: 3360 CODE:
2579{ 3361 self->flags &= ~CF_SUSPENDED;
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
2582
2583 sv_setsv (cb, &PL_sv_undef);
2584
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611 3362
2612void 3363void
2613_get_state (SV *self) 3364_pool_handler (...)
3365 CODE:
3366 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3367
3368void
3369async_pool (SV *cv, ...)
2614 PROTOTYPE: $ 3370 PROTOTYPE: &@
2615 PPCODE: 3371 PPCODE:
2616{ 3372{
2617 AV *defav = GvAV (PL_defgv); 3373 HV *hv = (HV *)av_pop (av_async_pool);
2618 AV *av = newAV (); 3374 AV *av = newAV ();
3375 SV *cb = ST (0);
2619 int i; 3376 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 3377
2625 data->errorno = errno; 3378 av_extend (av, items - 2);
2626 data->laststype = PL_laststype; 3379 for (i = 1; i < items; ++i)
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629
2630 av_extend (av, AvFILLp (defav) + 1 + 1);
2631
2632 for (i = 0; i <= AvFILLp (defav); ++i)
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3380 av_push (av, SvREFCNT_inc_NN (ST (i)));
2634 3381
2635 av_push (av, data_sv); 3382 if ((SV *)hv == &PL_sv_undef)
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 { 3383 {
2682 PUSHMARK (SP); 3384 PUSHMARK (SP);
3385 EXTEND (SP, 2);
3386 PUSHs (sv_Coro);
3387 PUSHs ((SV *)cv_pool_handler);
2683 PUTBACK; 3388 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3389 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2685 SPAGAIN; 3390 SPAGAIN;
3391
3392 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2686 } 3393 }
2687 3394
2688 --incede; 3395 {
3396 struct coro *coro = SvSTATE_hv (hv);
3397
3398 assert (!coro->invoke_cb);
3399 assert (!coro->invoke_av);
3400 coro->invoke_cb = SvREFCNT_inc (cb);
3401 coro->invoke_av = av;
3402 }
3403
3404 api_ready (aTHX_ (SV *)hv);
3405
3406 if (GIMME_V != G_VOID)
3407 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3408 else
3409 SvREFCNT_dec (hv);
3410}
3411
3412SV *
3413rouse_cb ()
3414 PROTOTYPE:
3415 CODE:
3416 RETVAL = coro_new_rouse_cb (aTHX);
3417 OUTPUT:
3418 RETVAL
3419
3420void
3421rouse_wait (...)
3422 PROTOTYPE: ;$
3423 PPCODE:
3424 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3425
3426void
3427on_enter (SV *block)
3428 ALIAS:
3429 on_leave = 1
3430 PROTOTYPE: &
3431 CODE:
3432{
3433 struct coro *coro = SvSTATE_current;
3434 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3435
3436 block = (SV *)coro_sv_2cv (aTHX_ block);
3437
3438 if (!*avp)
3439 *avp = newAV ();
3440
3441 av_push (*avp, SvREFCNT_inc (block));
3442
3443 if (!ix)
3444 on_enterleave_call (aTHX_ block);
3445
3446 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3447 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3448 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2689} 3449}
2690 3450
2691 3451
2692MODULE = Coro::State PACKAGE = PerlIO::cede 3452MODULE = Coro::State PACKAGE = PerlIO::cede
2693 3453
2694BOOT: 3454BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3455 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 3456
3457
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 3458MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 3459
2699SV * 3460SV *
2700new (SV *klass, SV *count_ = 0) 3461new (SV *klass, SV *count = 0)
2701 CODE: 3462 CODE:
2702{ 3463 RETVAL = sv_bless (
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3464 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2704 AV *av = newAV (); 3465 GvSTASH (CvGV (cv))
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3466 );
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3467 OUTPUT:
2707} 3468 RETVAL
3469
3470# helper for Coro::Channel and others
3471SV *
3472_alloc (int count)
3473 CODE:
3474 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 3475 OUTPUT:
2709 RETVAL 3476 RETVAL
2710 3477
2711SV * 3478SV *
2712count (SV *self) 3479count (SV *self)
… …
2721 adjust = 1 3488 adjust = 1
2722 CODE: 3489 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3490 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724 3491
2725void 3492void
2726down (SV *self) 3493down (...)
2727 CODE: 3494 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3495 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3496
3497void
3498wait (...)
3499 CODE:
3500 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 3501
2730void 3502void
2731try (SV *self) 3503try (SV *self)
2732 PPCODE: 3504 PPCODE:
2733{ 3505{
… …
2745 XSRETURN_NO; 3517 XSRETURN_NO;
2746} 3518}
2747 3519
2748void 3520void
2749waiters (SV *self) 3521waiters (SV *self)
2750 CODE: 3522 PPCODE:
2751{ 3523{
2752 AV *av = (AV *)SvRV (self); 3524 AV *av = (AV *)SvRV (self);
3525 int wcount = AvFILLp (av) + 1 - 1;
2753 3526
2754 if (GIMME_V == G_SCALAR) 3527 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3528 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 3529 else
2757 { 3530 {
2758 int i; 3531 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 3532 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 3533 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 3534 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 3535 }
2763} 3536}
2764 3537
3538MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3539
3540void
3541_may_delete (SV *sem, int count, int extra_refs)
3542 PPCODE:
3543{
3544 AV *av = (AV *)SvRV (sem);
3545
3546 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3547 && AvFILLp (av) == 0 /* no waiters, just count */
3548 && SvIV (AvARRAY (av)[0]) == count)
3549 XSRETURN_YES;
3550
3551 XSRETURN_NO;
3552}
3553
3554MODULE = Coro::State PACKAGE = Coro::Signal
3555
3556SV *
3557new (SV *klass)
3558 CODE:
3559 RETVAL = sv_bless (
3560 coro_waitarray_new (aTHX_ 0),
3561 GvSTASH (CvGV (cv))
3562 );
3563 OUTPUT:
3564 RETVAL
3565
3566void
3567wait (...)
3568 CODE:
3569 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3570
3571void
3572broadcast (SV *self)
3573 CODE:
3574{
3575 AV *av = (AV *)SvRV (self);
3576 coro_signal_wake (aTHX_ av, AvFILLp (av));
3577}
3578
3579void
3580send (SV *self)
3581 CODE:
3582{
3583 AV *av = (AV *)SvRV (self);
3584
3585 if (AvFILLp (av))
3586 coro_signal_wake (aTHX_ av, 1);
3587 else
3588 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3589}
3590
3591IV
3592awaited (SV *self)
3593 CODE:
3594 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3595 OUTPUT:
3596 RETVAL
3597
3598
3599MODULE = Coro::State PACKAGE = Coro::AnyEvent
3600
3601BOOT:
3602 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3603
3604void
3605_schedule (...)
3606 CODE:
3607{
3608 static int incede;
3609
3610 api_cede_notself (aTHX);
3611
3612 ++incede;
3613 while (coro_nready >= incede && api_cede (aTHX))
3614 ;
3615
3616 sv_setsv (sv_activity, &PL_sv_undef);
3617 if (coro_nready >= incede)
3618 {
3619 PUSHMARK (SP);
3620 PUTBACK;
3621 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3622 }
3623
3624 --incede;
3625}
3626
3627
3628MODULE = Coro::State PACKAGE = Coro::AIO
3629
3630void
3631_register (char *target, char *proto, SV *req)
3632 CODE:
3633{
3634 CV *req_cv = coro_sv_2cv (aTHX_ req);
3635 /* newXSproto doesn't return the CV on 5.8 */
3636 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3637 sv_setpv ((SV *)slf_cv, proto);
3638 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3639}
3640

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