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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC vs.
Revision 1.352 by root, Sat Jun 20 08:58:50 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
152static 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);
153 169
154static U32 cctx_gen; 170static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 174static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
162static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 184static SV *rv_diehook;
165static SV *rv_warnhook; 185static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
167 187
168/* async_pool helper stuff */ 188/* async_pool helper stuff */
169static SV *sv_pool_rss; 189static SV *sv_pool_rss;
170static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
171static 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;
172 196
173/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
174static SV *sv_activity; 198static SV *sv_activity;
175 199
176static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
205 int valgrind_id; 229 int valgrind_id;
206#endif 230#endif
207 unsigned char flags; 231 unsigned char flags;
208} coro_cctx; 232} coro_cctx;
209 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
210enum { 238enum {
211 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
214 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 */
215}; 244};
216 245
217/* 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 */
218typedef struct 247typedef struct
219{ 248{
220 SV *defsv; 249 SV *defsv;
221 AV *defav; 250 AV *defav;
222 SV *errsv; 251 SV *errsv;
223 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
224#define VAR(name,type) type name; 254#define VAR(name,type) type name;
225# include "state.h" 255# include "state.h"
226#undef VAR 256#undef VAR
227} perl_slots; 257} perl_slots;
228 258
… …
231/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
232struct coro { 262struct coro {
233 /* the C coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 264 coro_cctx *cctx;
235 265
266 /* ready queue */
267 struct coro *next_ready;
268
236 /* state data */ 269 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 270 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 271 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 272 perl_slots *slot; /* basically the saved sp */
240 273
274 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 275 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */ 276 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 277 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 278 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro); 279 void (*on_destroy)(pTHX_ struct coro *coro);
246 280
247 /* statistics */ 281 /* statistics */
248 int usecount; /* number of transfers to this coro */ 282 int usecount; /* number of transfers to this coro */
249 283
250 /* coro process data */ 284 /* coro process data */
251 int prio; 285 int prio;
252 SV *throw; /* exception to be thrown */ 286 SV *except; /* exception to be thrown */
287 SV *rouse_cb;
253 288
254 /* async_pool */ 289 /* async_pool */
255 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;
256 297
257 /* linked list */ 298 /* linked list */
258 struct coro *next, *prev; 299 struct coro *next, *prev;
259}; 300};
260 301
… …
263 304
264/* the following variables are effectively part of the perl context */ 305/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 306/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 307/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 308static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 309
270/** Coro ********************************************************************/ 310/** Coro ********************************************************************/
271 311
272#define PRIO_MAX 3 312#define PRIO_MAX 3
273#define PRIO_HIGH 1 313#define PRIO_HIGH 1
… …
277#define PRIO_MIN -4 317#define PRIO_MIN -4
278 318
279/* for Coro.pm */ 319/* for Coro.pm */
280static SV *coro_current; 320static SV *coro_current;
281static SV *coro_readyhook; 321static SV *coro_readyhook;
282static 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;
283static struct coro *coro_first; 324static struct coro *coro_first;
284#define coro_nready coroapi.nready 325#define coro_nready coroapi.nready
285 326
286/** lowlevel stuff **********************************************************/ 327/** lowlevel stuff **********************************************************/
287 328
… …
313 get_hv (name, create); 354 get_hv (name, create);
314#endif 355#endif
315 return get_hv (name, create); 356 return get_hv (name, create);
316} 357}
317 358
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
318static AV * 425static AV *
319coro_clone_padlist (pTHX_ CV *cv) 426coro_derive_padlist (pTHX_ CV *cv)
320{ 427{
321 AV *padlist = CvPADLIST (cv); 428 AV *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 429 AV *newpadlist, *newpad;
323 430
324 newpadlist = newAV (); 431 newpadlist = newAV ();
… …
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 436 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 437#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 438 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist); 439 --AvFILLp (padlist);
333 440
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 441 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
335 av_store (newpadlist, 1, (SV *)newpad); 442 av_store (newpadlist, 1, (SV *)newpad);
336 443
337 return newpadlist; 444 return newpadlist;
338} 445}
339 446
340static void 447static void
341free_padlist (pTHX_ AV *padlist) 448free_padlist (pTHX_ AV *padlist)
342{ 449{
343 /* may be during global destruction */ 450 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 451 if (!IN_DESTRUCT)
345 { 452 {
346 I32 i = AvFILLp (padlist); 453 I32 i = AvFILLp (padlist);
347 while (i >= 0) 454
455 while (i > 0) /* special-case index 0 */
348 { 456 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 457 /* we try to be extra-careful here */
350 if (svp) 458 AV *av = (AV *)AvARRAY (padlist)[i--];
351 { 459 I32 j = AvFILLp (av);
352 SV *sv; 460
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 461 while (j >= 0)
462 SvREFCNT_dec (AvARRAY (av)[j--]);
463
464 AvFILLp (av) = -1;
354 SvREFCNT_dec (sv); 465 SvREFCNT_dec (av);
355
356 SvREFCNT_dec (*svp);
357 }
358 } 466 }
359 467
468 SvREFCNT_dec (AvARRAY (padlist)[0]);
469
470 AvFILLp (padlist) = -1;
360 SvREFCNT_dec ((SV*)padlist); 471 SvREFCNT_dec ((SV*)padlist);
361 } 472 }
362} 473}
363 474
364static int 475static int
… …
373 484
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 485 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 486
376 return 0; 487 return 0;
377} 488}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 489
382static MGVTBL coro_cv_vtbl = { 490static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 491 0, 0, 0, 0,
384 coro_cv_free 492 coro_cv_free
385}; 493};
386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429 494
430/* the next two functions merely cache the padlists */ 495/* the next two functions merely cache the padlists */
431static void 496static void
432get_padlist (pTHX_ CV *cv) 497get_padlist (pTHX_ CV *cv)
433{ 498{
… …
439 else 504 else
440 { 505 {
441#if CORO_PREFER_PERL_FUNCTIONS 506#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 507 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 508 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 509 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 510 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 511 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 512 SvREFCNT_dec (cp);
448#else 513#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 514 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 515#endif
451 } 516 }
452} 517}
453 518
454static void 519static void
… …
461 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);
462 527
463 av = (AV *)mg->mg_obj; 528 av = (AV *)mg->mg_obj;
464 529
465 if (expect_false (AvFILLp (av) >= AvMAX (av))) 530 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1); 531 av_extend (av, AvFILLp (av) + 1);
467 532
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 533 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 534}
470 535
471/** load & save, init *******************************************************/ 536/** load & save, init *******************************************************/
537
538static void
539on_enterleave_call (pTHX_ SV *cb);
472 540
473static void 541static void
474load_perl (pTHX_ Coro__State c) 542load_perl (pTHX_ Coro__State c)
475{ 543{
476 perl_slots *slot = c->slot; 544 perl_slots *slot = c->slot;
477 c->slot = 0; 545 c->slot = 0;
478 546
479 PL_mainstack = c->mainstack; 547 PL_mainstack = c->mainstack;
480 548
481 GvSV (PL_defgv) = slot->defsv; 549 GvSV (PL_defgv) = slot->defsv;
482 GvAV (PL_defgv) = slot->defav; 550 GvAV (PL_defgv) = slot->defav;
483 GvSV (PL_errgv) = slot->errsv; 551 GvSV (PL_errgv) = slot->errsv;
484 GvSV (irsgv) = slot->irsgv; 552 GvSV (irsgv) = slot->irsgv;
553 GvHV (PL_hintgv) = slot->hinthv;
485 554
486 #define VAR(name,type) PL_ ## name = slot->name; 555 #define VAR(name,type) PL_ ## name = slot->name;
487 # include "state.h" 556 # include "state.h"
488 #undef VAR 557 #undef VAR
489 558
… …
502 571
503 PUTBACK; 572 PUTBACK;
504 } 573 }
505 574
506 slf_frame = c->slf_frame; 575 slf_frame = c->slf_frame;
507 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 }
508} 585}
509 586
510static void 587static void
511save_perl (pTHX_ Coro__State c) 588save_perl (pTHX_ Coro__State c)
512{ 589{
513 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;
514 c->slf_frame = slf_frame; 599 c->slf_frame = slf_frame;
515 600
516 { 601 {
517 dSP; 602 dSP;
518 I32 cxix = cxstack_ix; 603 I32 cxix = cxstack_ix;
… …
575 c->mainstack = PL_mainstack; 660 c->mainstack = PL_mainstack;
576 661
577 { 662 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 663 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 664
580 slot->defav = GvAV (PL_defgv); 665 slot->defav = GvAV (PL_defgv);
581 slot->defsv = DEFSV; 666 slot->defsv = DEFSV;
582 slot->errsv = ERRSV; 667 slot->errsv = ERRSV;
583 slot->irsgv = GvSV (irsgv); 668 slot->irsgv = GvSV (irsgv);
669 slot->hinthv = GvHV (PL_hintgv);
584 670
585 #define VAR(name,type) slot->name = PL_ ## name; 671 #define VAR(name,type) slot->name = PL_ ## name;
586 # include "state.h" 672 # include "state.h"
587 #undef VAR 673 #undef VAR
588 } 674 }
… …
593 * of perl.c:init_stacks, except that it uses less memory 679 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 680 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 681 * not usually need a lot of stackspace.
596 */ 682 */
597#if CORO_PREFER_PERL_FUNCTIONS 683#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 684# define coro_init_stacks(thx) init_stacks ()
599#else 685#else
600static void 686static void
601coro_init_stacks (pTHX) 687coro_init_stacks (pTHX)
602{ 688{
603 PL_curstackinfo = new_stackinfo(32, 8); 689 PL_curstackinfo = new_stackinfo(32, 8);
… …
666#if !PERL_VERSION_ATLEAST (5,10,0) 752#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 753 Safefree (PL_retstack);
668#endif 754#endif
669} 755}
670 756
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
671static size_t 766static size_t
672coro_rss (pTHX_ struct coro *coro) 767coro_rss (pTHX_ struct coro *coro)
673{ 768{
674 size_t rss = sizeof (*coro); 769 size_t rss = sizeof (*coro);
675 770
676 if (coro->mainstack) 771 if (coro->mainstack)
677 { 772 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 773 if (coro->flags & CF_RUNNING)
682 { 774 {
683 slot = &tmp_slot; 775 #define SYM(sym) PL_ ## sym
684 776 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 777 #undef SYM
688 } 778 }
689 else 779 else
690 slot = coro->slot;
691
692 if (slot)
693 { 780 {
694 rss += sizeof (slot->curstackinfo); 781 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 782 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 783 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 784 }
706 } 785 }
707 786
708 return rss; 787 return rss;
709} 788}
… …
722#endif 801#endif
723 802
724/* 803/*
725 * This overrides the default magic get method of %SIG elements. 804 * This overrides the default magic get method of %SIG elements.
726 * 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
727 * 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
728 * readback here. 807 * readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 808 */
733static int 809static int
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 810coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 811{
736 const char *s = MgPV_nolen_const (mg); 812 const char *s = MgPV_nolen_const (mg);
… …
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 865 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790 866
791 if (svp) 867 if (svp)
792 { 868 {
793 SV *old = *svp; 869 SV *old = *svp;
794 *svp = newSVsv (sv); 870 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 871 SvREFCNT_dec (old);
796 return 0; 872 return 0;
797 } 873 }
798 } 874 }
799 875
… …
810static int 886static int
811slf_check_nop (pTHX_ struct CoroSLF *frame) 887slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 888{
813 return 0; 889 return 0;
814} 890}
891
892static int
893slf_check_repeat (pTHX_ struct CoroSLF *frame)
894{
895 return 1;
896}
897
898static UNOP coro_setup_op;
815 899
816static 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 */
817coro_setup (pTHX_ struct coro *coro) 901coro_setup (pTHX_ struct coro *coro)
818{ 902{
819 /* 903 /*
… …
823 907
824 PL_runops = RUNOPS_DEFAULT; 908 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 909 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 910 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 911 PL_comppad = 0;
912 PL_comppad_name = 0;
913 PL_comppad_name_fill = 0;
914 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 915 PL_curpm = 0;
829 PL_curpad = 0; 916 PL_curpad = 0;
830 PL_localizing = 0; 917 PL_localizing = 0;
831 PL_dirty = 0; 918 PL_dirty = 0;
832 PL_restartop = 0; 919 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 920#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 921 PL_parser = 0;
835#endif 922#endif
923 PL_hints = 0;
836 924
837 /* recreate the die/warn hooks */ 925 /* recreate the die/warn hooks */
838 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 );
839 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);
840 928
841 GvSV (PL_defgv) = newSV (0); 929 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 930 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 931 GvSV (PL_errgv) = newSV (0);
844 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;
845 PL_rs = newSVsv (GvSV (irsgv)); 934 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 935 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 936
848 { 937 {
849 dSP; 938 dSP;
850 UNOP myop; 939 UNOP myop;
851 940
852 Zero (&myop, 1, UNOP); 941 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 942 myop.op_next = Nullop;
943 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 944 myop.op_flags = OPf_WANT_VOID;
855 945
856 PUSHMARK (SP); 946 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 947 PUSHs ((SV *)coro->startcv);
858 PUTBACK; 948 PUTBACK;
859 PL_op = (OP *)&myop; 949 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 950 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 951 }
863 952
864 /* 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
865 * 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.
866 */ 955 */
867 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 */
868 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 */
869 958
870 coro_throw = coro->throw; 959 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 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 */
872 964
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
873static void 971static void
874coro_destruct (pTHX_ struct coro *coro) 972coro_unwind_stacks (pTHX)
875{ 973{
876 if (!IN_DESTRUCT) 974 if (!IN_DESTRUCT)
877 { 975 {
878 /* restore all saved variables and stuff */ 976 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 977 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 985 POPSTACK_TO (PL_mainstack);
888 986
889 /* unwind main stack */ 987 /* unwind main stack */
890 dounwind (-1); 988 dounwind (-1);
891 } 989 }
990}
892 991
893 SvREFCNT_dec (GvSV (PL_defgv)); 992static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 993coro_destruct_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 994{
896 SvREFCNT_dec (PL_defoutgv); 995 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 996
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 997 {
998 struct coro *current = SvSTATE_current;
999
1000 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1001
1002 save_perl (aTHX_ current);
1003 load_perl (aTHX_ coro);
1004
1005 coro_unwind_stacks (aTHX);
1006 coro_destruct_stacks (aTHX);
1007
1008 // now save some sv's to be free'd later
1009 svf [0] = GvSV (PL_defgv);
1010 svf [1] = (SV *)GvAV (PL_defgv);
1011 svf [2] = GvSV (PL_errgv);
1012 svf [3] = (SV *)PL_defoutgv;
1013 svf [4] = PL_rs;
1014 svf [5] = GvSV (irsgv);
1015 svf [6] = (SV *)GvHV (PL_hintgv);
1016 svf [7] = PL_diehook;
1017 svf [8] = PL_warnhook;
1018 assert (9 == sizeof (svf) / sizeof (*svf));
1019
1020 load_perl (aTHX_ current);
1021 }
1022
1023 {
1024 int i;
1025
1026 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1027 SvREFCNT_dec (svf [i]);
1028
903 SvREFCNT_dec (coro->saved_deffh); 1029 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1030 SvREFCNT_dec (coro->rouse_cb);
905 1031 SvREFCNT_dec (coro->invoke_cb);
906 coro_destruct_stacks (aTHX); 1032 SvREFCNT_dec (coro->invoke_av);
1033 }
907} 1034}
908 1035
909INLINE void 1036INLINE void
910free_coro_mortal (pTHX) 1037free_coro_mortal (pTHX)
911{ 1038{
… …
919static int 1046static int
920runops_trace (pTHX) 1047runops_trace (pTHX)
921{ 1048{
922 COP *oldcop = 0; 1049 COP *oldcop = 0;
923 int oldcxix = -2; 1050 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1051
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1052 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1053 {
929 PERL_ASYNC_CHECK (); 1054 PERL_ASYNC_CHECK ();
930 1055
931 if (cctx->flags & CC_TRACE_ALL) 1056 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1057 {
933 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1058 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
934 { 1059 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1060 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1061 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1062 AV *av = newAV (); /* return values */
938 SV **cb; 1063 SV **cb;
… …
975 1100
976 if (PL_curcop != &PL_compiling) 1101 if (PL_curcop != &PL_compiling)
977 { 1102 {
978 SV **cb; 1103 SV **cb;
979 1104
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1105 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
981 { 1106 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1107 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1108
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1109 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1110 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1111 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1112 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1113 SV *fullname = sv_2mortal (newSV (0));
990 1114
991 if (isGV (gv)) 1115 if (isGV (gv))
… …
996 SAVETMPS; 1120 SAVETMPS;
997 EXTEND (SP, 3); 1121 EXTEND (SP, 3);
998 PUSHMARK (SP); 1122 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1123 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1124 PUSHs (fullname);
1001 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1125 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1002 PUTBACK; 1126 PUTBACK;
1003 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1127 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1004 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1128 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1005 SPAGAIN; 1129 SPAGAIN;
1006 FREETMPS; 1130 FREETMPS;
… …
1009 } 1133 }
1010 1134
1011 oldcxix = cxstack_ix; 1135 oldcxix = cxstack_ix;
1012 } 1136 }
1013 1137
1014 if (cctx->flags & CC_TRACE_LINE) 1138 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1139 {
1016 dSP; 1140 dSP;
1017 1141
1018 PL_runops = RUNOPS_DEFAULT; 1142 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1143 ENTER;
… …
1038 1162
1039 TAINT_NOT; 1163 TAINT_NOT;
1040 return 0; 1164 return 0;
1041} 1165}
1042 1166
1167static struct CoroSLF cctx_ssl_frame;
1168
1043static void 1169static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1170slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1171{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1172 ta->prev = 0;
1048} 1173}
1049 1174
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1175static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1176slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */ 1177{
1053/* also initialises PL_top_env */ 1178 *frame = cctx_ssl_frame;
1179
1180 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1181}
1182
1183/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1054static void NOINLINE 1184static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx) 1185cctx_prepare (pTHX)
1056{ 1186{
1057 dSP;
1058 UNOP myop;
1059
1060 PL_top_env = &PL_start_env; 1187 PL_top_env = &PL_start_env;
1061 1188
1062 if (cctx->flags & CC_TRACE) 1189 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1190 PL_runops = runops_trace;
1064 1191
1065 Zero (&myop, 1, UNOP); 1192 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1193 * that can lead to creation of a new cctx */
1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1194 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1195 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1068 1196
1069 PUSHMARK (SP); 1197 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1198 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1199
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1200 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1201 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1202}
1078 1203
1079/* the tail of transfer: execute stuff we can only do after a transfer */ 1204/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void 1205INLINE void
1081transfer_tail (pTHX) 1206transfer_tail (pTHX)
… …
1100 /* normally we would need to skip the entersub here */ 1225 /* normally we would need to skip the entersub here */
1101 /* not doing so will re-execute it, which is exactly what we want */ 1226 /* not doing so will re-execute it, which is exactly what we want */
1102 /* PL_nop = PL_nop->op_next */ 1227 /* PL_nop = PL_nop->op_next */
1103 1228
1104 /* inject a fake subroutine call to cctx_init */ 1229 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1230 cctx_prepare (aTHX);
1106 1231
1107 /* cctx_run is the alternative tail of transfer() */ 1232 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1233 transfer_tail (aTHX);
1109 1234
1110 /* somebody or something will hit me for both perl_run and PL_restartop */ 1235 /* somebody or something will hit me for both perl_run and PL_restartop */
1111 PL_restartop = PL_op; 1236 PL_restartop = PL_op;
1112 perl_run (PL_curinterp); 1237 perl_run (PL_curinterp);
1238 /*
1239 * Unfortunately, there is no way to get at the return values of the
1240 * coro body here, as perl_run destroys these
1241 */
1113 1242
1114 /* 1243 /*
1115 * If perl-run returns we assume exit() was being called or the coro 1244 * If perl-run returns we assume exit() was being called or the coro
1116 * fell off the end, which seems to be the only valid (non-bug) 1245 * fell off the end, which seems to be the only valid (non-bug)
1117 * reason for perl_run to return. We try to exit by jumping to the 1246 * reason for perl_run to return. We try to exit by jumping to the
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1247 * bootstrap-time "top" top_env, as we cannot restore the "main"
1119 * coroutine as Coro has no such concept 1248 * coroutine as Coro has no such concept.
1249 * This actually isn't valid with the pthread backend, but OSes requiring
1250 * that backend are too broken to do it in a standards-compliant way.
1120 */ 1251 */
1121 PL_top_env = main_top_env; 1252 PL_top_env = main_top_env;
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1253 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1254 }
1124} 1255}
… …
1201cctx_destroy (coro_cctx *cctx) 1332cctx_destroy (coro_cctx *cctx)
1202{ 1333{
1203 if (!cctx) 1334 if (!cctx)
1204 return; 1335 return;
1205 1336
1337 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1338
1206 --cctx_count; 1339 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1340 coro_destroy (&cctx->cctx);
1208 1341
1209 /* coro_transfer creates new, empty cctx's */ 1342 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr) 1343 if (cctx->sptr)
… …
1273 /* TODO: throwing up here is considered harmful */ 1406 /* TODO: throwing up here is considered harmful */
1274 1407
1275 if (expect_true (prev != next)) 1408 if (expect_true (prev != next))
1276 { 1409 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1410 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1411 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1279 1412
1280 if (expect_false (next->flags & CF_RUNNING))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED)) 1413 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1414 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1285 1415
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1416#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1417 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1418 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1289#endif 1419#endif
… …
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1425transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1426{
1297 dSTACKLEVEL; 1427 dSTACKLEVEL;
1298 1428
1299 /* sometimes transfer is only called to set idle_sp */ 1429 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1430 if (expect_false (!prev))
1301 { 1431 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1432 cctx_current->idle_sp = STACKLEVEL;
1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1433 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1304 } 1434 }
1305 else if (expect_true (prev != next)) 1435 else if (expect_true (prev != next))
1306 { 1436 {
1307 coro_cctx *prev__cctx; 1437 coro_cctx *cctx_prev;
1308 1438
1309 if (expect_false (prev->flags & CF_NEW)) 1439 if (expect_false (prev->flags & CF_NEW))
1310 { 1440 {
1311 /* create a new empty/source context */ 1441 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1442 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1443 prev->flags |= CF_RUNNING;
1315 } 1444 }
1316 1445
1317 prev->flags &= ~CF_RUNNING; 1446 prev->flags &= ~CF_RUNNING;
… …
1328 coro_setup (aTHX_ next); 1457 coro_setup (aTHX_ next);
1329 } 1458 }
1330 else 1459 else
1331 load_perl (aTHX_ next); 1460 load_perl (aTHX_ next);
1332 1461
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1462 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1463 if (expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1464 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1465 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1466 && !force_cctx
1340 )) 1467 ))
1341 { 1468 {
1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1469 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1470 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1344 1471
1345 prev->cctx = 0;
1346
1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1472 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1473 /* without this the next cctx_get might destroy the running cctx while still in use */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1474 if (expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1475 if (expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1476 next->cctx = cctx_get (aTHX);
1352 1477
1353 cctx_put (prev__cctx); 1478 cctx_put (cctx_current);
1354 } 1479 }
1480 else
1481 prev->cctx = cctx_current;
1355 1482
1356 ++next->usecount; 1483 ++next->usecount;
1357 1484
1358 if (expect_true (!next->cctx)) 1485 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1486 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1487
1361 if (expect_false (prev__cctx != next->cctx)) 1488 next->cctx = 0;
1489
1490 if (expect_false (cctx_prev != cctx_current))
1362 { 1491 {
1363 prev__cctx->top_env = PL_top_env; 1492 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1493 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1494 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1495 }
1367 1496
1368 transfer_tail (aTHX); 1497 transfer_tail (aTHX);
1369 } 1498 }
1370} 1499}
… …
1378coro_state_destroy (pTHX_ struct coro *coro) 1507coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1508{
1380 if (coro->flags & CF_DESTROYED) 1509 if (coro->flags & CF_DESTROYED)
1381 return 0; 1510 return 0;
1382 1511
1383 if (coro->on_destroy) 1512 if (coro->on_destroy && !PL_dirty)
1384 coro->on_destroy (aTHX_ coro); 1513 coro->on_destroy (aTHX_ coro);
1385 1514
1386 coro->flags |= CF_DESTROYED; 1515 coro->flags |= CF_DESTROYED;
1387 1516
1388 if (coro->flags & CF_READY) 1517 if (coro->flags & CF_READY)
… …
1392 --coro_nready; 1521 --coro_nready;
1393 } 1522 }
1394 else 1523 else
1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1524 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1396 1525
1397 if (coro->mainstack && coro->mainstack != main_mainstack) 1526 if (coro->mainstack
1398 { 1527 && coro->mainstack != main_mainstack
1399 struct coro temp; 1528 && coro->slot
1400 1529 && !PL_dirty)
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro); 1530 coro_destruct_perl (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412 1531
1413 cctx_destroy (coro->cctx); 1532 cctx_destroy (coro->cctx);
1533 SvREFCNT_dec (coro->startcv);
1414 SvREFCNT_dec (coro->args); 1534 SvREFCNT_dec (coro->args);
1535 SvREFCNT_dec (CORO_THROW);
1415 1536
1416 if (coro->next) coro->next->prev = coro->prev; 1537 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1538 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1539 if (coro == coro_first) coro_first = coro->next;
1419 1540
… …
1473 1594
1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1595 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1475 TRANSFER (ta, 1); 1596 TRANSFER (ta, 1);
1476} 1597}
1477 1598
1599/*****************************************************************************/
1600/* gensub: simple closure generation utility */
1601
1602#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1603
1604/* create a closure from XS, returns a code reference */
1605/* the arg can be accessed via GENSUB_ARG from the callback */
1606/* the callback must use dXSARGS/XSRETURN */
1607static SV *
1608gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1609{
1610 CV *cv = (CV *)newSV (0);
1611
1612 sv_upgrade ((SV *)cv, SVt_PVCV);
1613
1614 CvANON_on (cv);
1615 CvISXSUB_on (cv);
1616 CvXSUB (cv) = xsub;
1617 GENSUB_ARG = arg;
1618
1619 return newRV_noinc ((SV *)cv);
1620}
1621
1478/** Coro ********************************************************************/ 1622/** Coro ********************************************************************/
1479 1623
1480INLINE void 1624INLINE void
1481coro_enq (pTHX_ struct coro *coro) 1625coro_enq (pTHX_ struct coro *coro)
1482{ 1626{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1627 struct coro **ready = coro_ready [coro->prio - PRIO_MIN];
1484}
1485 1628
1486INLINE SV * 1629 SvREFCNT_inc_NN (coro->hv);
1630
1631 coro->next_ready = 0;
1632 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1633 ready [1] = coro;
1634}
1635
1636INLINE struct coro *
1487coro_deq (pTHX) 1637coro_deq (pTHX)
1488{ 1638{
1489 int prio; 1639 int prio;
1490 1640
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1641 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1642 {
1493 return av_shift (coro_ready [prio]); 1643 struct coro **ready = coro_ready [prio];
1644
1645 if (ready [0])
1646 {
1647 struct coro *coro = ready [0];
1648 ready [0] = coro->next_ready;
1649 return coro;
1650 }
1651 }
1494 1652
1495 return 0; 1653 return 0;
1496} 1654}
1497 1655
1498static int 1656static int
… …
1500{ 1658{
1501 struct coro *coro; 1659 struct coro *coro;
1502 SV *sv_hook; 1660 SV *sv_hook;
1503 void (*xs_hook)(void); 1661 void (*xs_hook)(void);
1504 1662
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1663 coro = SvSTATE (coro_sv);
1509 1664
1510 if (coro->flags & CF_READY) 1665 if (coro->flags & CF_READY)
1511 return 0; 1666 return 0;
1512 1667
… …
1525 ENTER; 1680 ENTER;
1526 SAVETMPS; 1681 SAVETMPS;
1527 1682
1528 PUSHMARK (SP); 1683 PUSHMARK (SP);
1529 PUTBACK; 1684 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD); 1685 call_sv (sv_hook, G_VOID | G_DISCARD);
1531 SPAGAIN;
1532 1686
1533 FREETMPS; 1687 FREETMPS;
1534 LEAVE; 1688 LEAVE;
1535 } 1689 }
1536 1690
… …
1544api_is_ready (pTHX_ SV *coro_sv) 1698api_is_ready (pTHX_ SV *coro_sv)
1545{ 1699{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1700 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1701}
1548 1702
1703/* expects to own a reference to next->hv */
1549INLINE void 1704INLINE void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1705prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1706{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1707 SV *prev_sv = SvRV (coro_current);
1708
1592 ta->prev = SvSTATE_hv (prev_sv); 1709 ta->prev = SvSTATE_hv (prev_sv);
1710 ta->next = next;
1711
1593 TRANSFER_CHECK (*ta); 1712 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1713
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1714 SvRV_set (coro_current, (SV *)next->hv);
1597 1715
1598 free_coro_mortal (aTHX); 1716 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1717 coro_mortal = prev_sv;
1600} 1718}
1601 1719
1720static void
1721prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1722{
1723 for (;;)
1724 {
1725 struct coro *next = coro_deq (aTHX);
1726
1727 if (expect_true (next))
1728 {
1729 /* cannot transfer to destroyed coros, skip and look for next */
1730 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1731 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1732 else
1733 {
1734 next->flags &= ~CF_READY;
1735 --coro_nready;
1736
1737 prepare_schedule_to (aTHX_ ta, next);
1738 break;
1739 }
1740 }
1741 else
1742 {
1743 /* nothing to schedule: call the idle handler */
1744 if (SvROK (sv_idle)
1745 && SvOBJECT (SvRV (sv_idle)))
1746 {
1747 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1748 api_ready (aTHX_ SvRV (sv_idle));
1749 --coro_nready;
1750 }
1751 else
1752 {
1753 dSP;
1754
1755 ENTER;
1756 SAVETMPS;
1757
1758 PUSHMARK (SP);
1759 PUTBACK;
1760 call_sv (sv_idle, G_VOID | G_DISCARD);
1761
1762 FREETMPS;
1763 LEAVE;
1764 }
1765 }
1766 }
1767}
1768
1602INLINE void 1769INLINE void
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 1770prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 1771{
1605 api_ready (aTHX_ coro_current); 1772 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 1773 prepare_schedule (aTHX_ ta);
… …
1625{ 1792{
1626 struct coro_transfer_args ta; 1793 struct coro_transfer_args ta;
1627 1794
1628 prepare_schedule (aTHX_ &ta); 1795 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 1796 TRANSFER (ta, 1);
1797}
1798
1799static void
1800api_schedule_to (pTHX_ SV *coro_sv)
1801{
1802 struct coro_transfer_args ta;
1803 struct coro *next = SvSTATE (coro_sv);
1804
1805 SvREFCNT_inc_NN (coro_sv);
1806 prepare_schedule_to (aTHX_ &ta, next);
1630} 1807}
1631 1808
1632static int 1809static int
1633api_cede (pTHX) 1810api_cede (pTHX)
1634{ 1811{
… …
1663static void 1840static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 1841api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 1842{
1666 struct coro *coro = SvSTATE (coro_sv); 1843 struct coro *coro = SvSTATE (coro_sv);
1667 1844
1845 if (coro->flags & CF_RUNNING)
1846 croak ("cannot enable tracing on a running coroutine, caught");
1847
1668 if (flags & CC_TRACE) 1848 if (flags & CC_TRACE)
1669 { 1849 {
1670 if (!coro->cctx) 1850 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 1851 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 1852 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 1853 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 1854
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1855 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 1856 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1857 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 1858 {
… …
1681 if (coro->flags & CF_RUNNING) 1861 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 1862 PL_runops = RUNOPS_DEFAULT;
1683 else 1863 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 1864 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 1865 }
1866}
1867
1868static void
1869coro_call_on_destroy (pTHX_ struct coro *coro)
1870{
1871 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1872 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1873
1874 if (on_destroyp)
1875 {
1876 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1877
1878 while (AvFILLp (on_destroy) >= 0)
1879 {
1880 dSP; /* don't disturb outer sp */
1881 SV *cb = av_pop (on_destroy);
1882
1883 PUSHMARK (SP);
1884
1885 if (statusp)
1886 {
1887 int i;
1888 AV *status = (AV *)SvRV (*statusp);
1889 EXTEND (SP, AvFILLp (status) + 1);
1890
1891 for (i = 0; i <= AvFILLp (status); ++i)
1892 PUSHs (AvARRAY (status)[i]);
1893 }
1894
1895 PUTBACK;
1896 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1897 }
1898 }
1899}
1900
1901static void
1902slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1903{
1904 int i;
1905 HV *hv = (HV *)SvRV (coro_current);
1906 AV *av = newAV ();
1907
1908 av_extend (av, items - 1);
1909 for (i = 0; i < items; ++i)
1910 av_push (av, SvREFCNT_inc_NN (arg [i]));
1911
1912 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1913
1914 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1915 api_ready (aTHX_ sv_manager);
1916
1917 frame->prepare = prepare_schedule;
1918 frame->check = slf_check_repeat;
1919
1920 /* as a minor optimisation, we could unwind all stacks here */
1921 /* but that puts extra pressure on pp_slf, and is not worth much */
1922 /*coro_unwind_stacks (aTHX);*/
1923}
1924
1925/*****************************************************************************/
1926/* async pool handler */
1927
1928static int
1929slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1930{
1931 HV *hv = (HV *)SvRV (coro_current);
1932 struct coro *coro = (struct coro *)frame->data;
1933
1934 if (!coro->invoke_cb)
1935 return 1; /* loop till we have invoke */
1936 else
1937 {
1938 hv_store (hv, "desc", sizeof ("desc") - 1,
1939 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1940
1941 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1942
1943 {
1944 dSP;
1945 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1946 PUTBACK;
1947 }
1948
1949 SvREFCNT_dec (GvAV (PL_defgv));
1950 GvAV (PL_defgv) = coro->invoke_av;
1951 coro->invoke_av = 0;
1952
1953 return 0;
1954 }
1955}
1956
1957static void
1958slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1959{
1960 HV *hv = (HV *)SvRV (coro_current);
1961 struct coro *coro = SvSTATE_hv ((SV *)hv);
1962
1963 if (expect_true (coro->saved_deffh))
1964 {
1965 /* subsequent iteration */
1966 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1967 coro->saved_deffh = 0;
1968
1969 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1970 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1971 {
1972 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1973 coro->invoke_av = newAV ();
1974
1975 frame->prepare = prepare_nop;
1976 }
1977 else
1978 {
1979 av_clear (GvAV (PL_defgv));
1980 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1981
1982 coro->prio = 0;
1983
1984 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1985 api_trace (aTHX_ coro_current, 0);
1986
1987 frame->prepare = prepare_schedule;
1988 av_push (av_async_pool, SvREFCNT_inc (hv));
1989 }
1990 }
1991 else
1992 {
1993 /* first iteration, simply fall through */
1994 frame->prepare = prepare_nop;
1995 }
1996
1997 frame->check = slf_check_pool_handler;
1998 frame->data = (void *)coro;
1999}
2000
2001/*****************************************************************************/
2002/* rouse callback */
2003
2004#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2005
2006static void
2007coro_rouse_callback (pTHX_ CV *cv)
2008{
2009 dXSARGS;
2010 SV *data = (SV *)GENSUB_ARG;
2011
2012 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2013 {
2014 /* first call, set args */
2015 SV *coro = SvRV (data);
2016 AV *av = newAV ();
2017
2018 SvRV_set (data, (SV *)av);
2019
2020 /* better take a full copy of the arguments */
2021 while (items--)
2022 av_store (av, items, newSVsv (ST (items)));
2023
2024 api_ready (aTHX_ coro);
2025 SvREFCNT_dec (coro);
2026 }
2027
2028 XSRETURN_EMPTY;
2029}
2030
2031static int
2032slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2033{
2034 SV *data = (SV *)frame->data;
2035
2036 if (CORO_THROW)
2037 return 0;
2038
2039 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2040 return 1;
2041
2042 /* now push all results on the stack */
2043 {
2044 dSP;
2045 AV *av = (AV *)SvRV (data);
2046 int i;
2047
2048 EXTEND (SP, AvFILLp (av) + 1);
2049 for (i = 0; i <= AvFILLp (av); ++i)
2050 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2051
2052 /* we have stolen the elements, so set length to zero and free */
2053 AvFILLp (av) = -1;
2054 av_undef (av);
2055
2056 PUTBACK;
2057 }
2058
2059 return 0;
2060}
2061
2062static void
2063slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2064{
2065 SV *cb;
2066
2067 if (items)
2068 cb = arg [0];
2069 else
2070 {
2071 struct coro *coro = SvSTATE_current;
2072
2073 if (!coro->rouse_cb)
2074 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2075
2076 cb = sv_2mortal (coro->rouse_cb);
2077 coro->rouse_cb = 0;
2078 }
2079
2080 if (!SvROK (cb)
2081 || SvTYPE (SvRV (cb)) != SVt_PVCV
2082 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2083 croak ("Coro::rouse_wait called with illegal callback argument,");
2084
2085 {
2086 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2087 SV *data = (SV *)GENSUB_ARG;
2088
2089 frame->data = (void *)data;
2090 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2091 frame->check = slf_check_rouse_wait;
2092 }
2093}
2094
2095static SV *
2096coro_new_rouse_cb (pTHX)
2097{
2098 HV *hv = (HV *)SvRV (coro_current);
2099 struct coro *coro = SvSTATE_hv (hv);
2100 SV *data = newRV_inc ((SV *)hv);
2101 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2102
2103 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2104 SvREFCNT_dec (data); /* magicext increases the refcount */
2105
2106 SvREFCNT_dec (coro->rouse_cb);
2107 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2108
2109 return cb;
1686} 2110}
1687 2111
1688/*****************************************************************************/ 2112/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2113/* schedule-like-function opcode (SLF) */
1690 2114
… …
1714 2138
1715 RETURNOP (slf_restore.op_first); 2139 RETURNOP (slf_restore.op_first);
1716} 2140}
1717 2141
1718static void 2142static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2143slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2144{
1737 SV **arg = (SV **)slf_frame.data; 2145 SV **arg = (SV **)slf_frame.data;
1738 2146
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2147 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2164 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2165 frame->check = slf_check_nop;
1758} 2166}
1759 2167
1760static void 2168static void
2169slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2170{
2171 struct coro *next = (struct coro *)slf_frame.data;
2172
2173 SvREFCNT_inc_NN (next->hv);
2174 prepare_schedule_to (aTHX_ ta, next);
2175}
2176
2177static void
2178slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2179{
2180 if (!items)
2181 croak ("Coro::schedule_to expects a coroutine argument, caught");
2182
2183 frame->data = (void *)SvSTATE (arg [0]);
2184 frame->prepare = slf_prepare_schedule_to;
2185 frame->check = slf_check_nop;
2186}
2187
2188static void
2189slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2190{
2191 api_ready (aTHX_ SvRV (coro_current));
2192
2193 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2194}
2195
2196static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2197slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2198{
1763 frame->prepare = prepare_cede; 2199 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2200 frame->check = slf_check_nop;
1765} 2201}
… …
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2204slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{ 2205{
1770 frame->prepare = prepare_cede_notself; 2206 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2207 frame->check = slf_check_nop;
1772} 2208}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776 2209
1777/* 2210/*
1778 * these not obviously related functions are all rolled into one 2211 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2212 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2213 * stack offset
… …
1836 } 2269 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2270 while (slf_frame.check (aTHX_ &slf_frame));
1838 2271
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2272 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2273
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2274 /* exception handling */
1860 if (expect_false (coro_throw)) 2275 if (expect_false (CORO_THROW))
1861 { 2276 {
1862 SV *exception = sv_2mortal (coro_throw); 2277 SV *exception = sv_2mortal (CORO_THROW);
1863 2278
1864 coro_throw = 0; 2279 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2280 sv_setsv (ERRSV, exception);
1866 croak (0); 2281 croak (0);
2282 }
2283
2284 /* return value handling - mostly like entersub */
2285 /* make sure we put something on the stack in scalar context */
2286 if (GIMME_V == G_SCALAR)
2287 {
2288 dSP;
2289 SV **bot = PL_stack_base + checkmark;
2290
2291 if (sp == bot) /* too few, push undef */
2292 bot [1] = &PL_sv_undef;
2293 else if (sp != bot + 1) /* too many, take last one */
2294 bot [1] = *sp;
2295
2296 SP = bot + 1;
2297
2298 PUTBACK;
1867 } 2299 }
1868 2300
1869 return NORMAL; 2301 return NORMAL;
1870} 2302}
1871 2303
… …
1912 } 2344 }
1913 else 2345 else
1914 slf_argc = 0; 2346 slf_argc = 0;
1915 2347
1916 PL_op->op_ppaddr = pp_slf; 2348 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2349 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2350
1919 PL_op = (OP *)&slf_restore; 2351 PL_op = (OP *)&slf_restore;
2352}
2353
2354/*****************************************************************************/
2355/* dynamic wind */
2356
2357static void
2358on_enterleave_call (pTHX_ SV *cb)
2359{
2360 dSP;
2361
2362 PUSHSTACK;
2363
2364 PUSHMARK (SP);
2365 PUTBACK;
2366 call_sv (cb, G_VOID | G_DISCARD);
2367 SPAGAIN;
2368
2369 POPSTACK;
2370}
2371
2372static SV *
2373coro_avp_pop_and_free (pTHX_ AV **avp)
2374{
2375 AV *av = *avp;
2376 SV *res = av_pop (av);
2377
2378 if (AvFILLp (av) < 0)
2379 {
2380 *avp = 0;
2381 SvREFCNT_dec (av);
2382 }
2383
2384 return res;
2385}
2386
2387static void
2388coro_pop_on_enter (pTHX_ void *coro)
2389{
2390 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2391 SvREFCNT_dec (cb);
2392}
2393
2394static void
2395coro_pop_on_leave (pTHX_ void *coro)
2396{
2397 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2398 on_enterleave_call (aTHX_ sv_2mortal (cb));
1920} 2399}
1921 2400
1922/*****************************************************************************/ 2401/*****************************************************************************/
1923/* PerlIO::cede */ 2402/* PerlIO::cede */
1924 2403
… …
1993 PerlIOBuf_get_cnt, 2472 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 2473 PerlIOBuf_set_ptrcnt,
1995}; 2474};
1996 2475
1997/*****************************************************************************/ 2476/*****************************************************************************/
2477/* Coro::Semaphore & Coro::Signal */
2478
2479static SV *
2480coro_waitarray_new (pTHX_ int count)
2481{
2482 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2483 AV *av = newAV ();
2484 SV **ary;
2485
2486 /* unfortunately, building manually saves memory */
2487 Newx (ary, 2, SV *);
2488 AvALLOC (av) = ary;
2489#if PERL_VERSION_ATLEAST (5,10,0)
2490 AvARRAY (av) = ary;
2491#else
2492 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2493 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2494 SvPVX ((SV *)av) = (char *)ary;
2495#endif
2496 AvMAX (av) = 1;
2497 AvFILLp (av) = 0;
2498 ary [0] = newSViv (count);
2499
2500 return newRV_noinc ((SV *)av);
2501}
2502
1998/* Coro::Semaphore */ 2503/* semaphore */
1999 2504
2000static void 2505static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2506coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 2507{
2003 SV *count_sv = AvARRAY (av)[0]; 2508 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 2520 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 2521 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 2522 cb = av_shift (av);
2018 2523
2019 if (SvOBJECT (cb)) 2524 if (SvOBJECT (cb))
2525 {
2020 api_ready (aTHX_ cb); 2526 api_ready (aTHX_ cb);
2021 else 2527 --count;
2022 croak ("callbacks not yet supported"); 2528 }
2529 else if (SvTYPE (cb) == SVt_PVCV)
2530 {
2531 dSP;
2532 PUSHMARK (SP);
2533 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2534 PUTBACK;
2535 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2536 }
2023 2537
2024 SvREFCNT_dec (cb); 2538 SvREFCNT_dec (cb);
2025
2026 --count;
2027 } 2539 }
2028} 2540}
2029 2541
2030static void 2542static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2543coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2545 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2546 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035} 2547}
2036 2548
2037static int 2549static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2550slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 2551{
2040 AV *av = (AV *)frame->data; 2552 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 2553 SV *count_sv = AvARRAY (av)[0];
2042 2554
2555 /* if we are about to throw, don't actually acquire the lock, just throw */
2556 if (CORO_THROW)
2557 return 0;
2043 if (SvIVX (count_sv) > 0) 2558 else if (SvIVX (count_sv) > 0)
2044 { 2559 {
2045 SvSTATE_current->on_destroy = 0; 2560 SvSTATE_current->on_destroy = 0;
2561
2562 if (acquire)
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2563 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2564 else
2565 coro_semaphore_adjust (aTHX_ av, 0);
2566
2047 return 0; 2567 return 0;
2048 } 2568 }
2049 else 2569 else
2050 { 2570 {
2051 int i; 2571 int i;
… …
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2580 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1; 2581 return 1;
2062 } 2582 }
2063} 2583}
2064 2584
2065static void 2585static int
2586slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2587{
2588 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2589}
2590
2591static int
2592slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2593{
2594 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2595}
2596
2597static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2598slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{ 2599{
2068 AV *av = (AV *)SvRV (arg [0]); 2600 AV *av = (AV *)SvRV (arg [0]);
2069 2601
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 2602 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 2603 {
2072 frame->data = (void *)av; 2604 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 2605 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 2606 }
2076 else 2607 else
2077 { 2608 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2609 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 2610
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2611 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 2612 frame->prepare = prepare_schedule;
2082 2613
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 2614 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2615 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2616 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 } 2617 }
2618}
2088 2619
2620static void
2621slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2622{
2623 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2089 frame->check = slf_check_semaphore_down; 2624 frame->check = slf_check_semaphore_down;
2090
2091} 2625}
2092 2626
2093/*****************************************************************************/ 2627static void
2094/* gensub: simple closure generation utility */ 2628slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 2629{
2104 CV *cv = (CV *)newSV (0); 2630 if (items >= 2)
2631 {
2632 /* callback form */
2633 AV *av = (AV *)SvRV (arg [0]);
2634 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2105 2635
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 2636 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2107 2637
2108 CvANON_on (cv); 2638 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 2639 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 2640
2113 return newRV_noinc ((SV *)cv); 2641 frame->prepare = prepare_nop;
2642 frame->check = slf_check_nop;
2643 }
2644 else
2645 {
2646 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2647 frame->check = slf_check_semaphore_wait;
2648 }
2649}
2650
2651/* signal */
2652
2653static void
2654coro_signal_wake (pTHX_ AV *av, int count)
2655{
2656 SvIVX (AvARRAY (av)[0]) = 0;
2657
2658 /* now signal count waiters */
2659 while (count > 0 && AvFILLp (av) > 0)
2660 {
2661 SV *cb;
2662
2663 /* swap first two elements so we can shift a waiter */
2664 cb = AvARRAY (av)[0];
2665 AvARRAY (av)[0] = AvARRAY (av)[1];
2666 AvARRAY (av)[1] = cb;
2667
2668 cb = av_shift (av);
2669
2670 api_ready (aTHX_ cb);
2671 sv_setiv (cb, 0); /* signal waiter */
2672 SvREFCNT_dec (cb);
2673
2674 --count;
2675 }
2676}
2677
2678static int
2679slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 /* if we are about to throw, also stop waiting */
2682 return SvROK ((SV *)frame->data) && !CORO_THROW;
2683}
2684
2685static void
2686slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2687{
2688 AV *av = (AV *)SvRV (arg [0]);
2689
2690 if (SvIVX (AvARRAY (av)[0]))
2691 {
2692 SvIVX (AvARRAY (av)[0]) = 0;
2693 frame->prepare = prepare_nop;
2694 frame->check = slf_check_nop;
2695 }
2696 else
2697 {
2698 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2699
2700 av_push (av, waiter);
2701
2702 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2703 frame->prepare = prepare_schedule;
2704 frame->check = slf_check_signal_wait;
2705 }
2114} 2706}
2115 2707
2116/*****************************************************************************/ 2708/*****************************************************************************/
2117/* Coro::AIO */ 2709/* Coro::AIO */
2118 2710
… …
2133 dXSARGS; 2725 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 2726 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state); 2727 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 2728 SV *data_sv = newSV (sizeof (struct io_state));
2137 2729
2138 av_extend (state, items); 2730 av_extend (state, items - 1);
2139 2731
2140 sv_upgrade (data_sv, SVt_PV); 2732 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 2733 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 2734 SvPOK_only (data_sv);
2143 2735
… …
2168static int 2760static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 2761slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 2762{
2171 AV *state = (AV *)frame->data; 2763 AV *state = (AV *)frame->data;
2172 2764
2765 /* if we are about to throw, return early */
2766 /* this does not cancel the aio request, but at least */
2767 /* it quickly returns */
2768 if (CORO_THROW)
2769 return 0;
2770
2173 /* one element that is an RV? repeat! */ 2771 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 2772 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1; 2773 return 1;
2176 2774
2177 /* restore status */ 2775 /* restore status */
… …
2247 2845
2248 for (i = 0; i < items; ++i) 2846 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 2847 PUSHs (arg [i]);
2250 2848
2251 /* now push the callback closure */ 2849 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 2850 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 2851
2254 /* now call the AIO function - we assume our request is uncancelable */ 2852 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 2853 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 2854 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 2855 }
… …
2263} 2861}
2264 2862
2265static void 2863static void
2266coro_aio_req_xs (pTHX_ CV *cv) 2864coro_aio_req_xs (pTHX_ CV *cv)
2267{ 2865{
2268 dVAR;
2269 dXSARGS; 2866 dXSARGS;
2270 2867
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 2868 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 2869
2273 XSRETURN_EMPTY; 2870 XSRETURN_EMPTY;
2274} 2871}
2275 2872
2276/*****************************************************************************/ 2873/*****************************************************************************/
2874
2875#if CORO_CLONE
2876# include "clone.c"
2877#endif
2277 2878
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2879MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 2880
2280PROTOTYPES: DISABLE 2881PROTOTYPES: DISABLE
2281 2882
… …
2286 coro_thx = PERL_GET_CONTEXT; 2887 coro_thx = PERL_GET_CONTEXT;
2287# endif 2888# endif
2288#endif 2889#endif
2289 BOOT_PAGESIZE; 2890 BOOT_PAGESIZE;
2290 2891
2892 cctx_current = cctx_new_empty ();
2893
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2894 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2895 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 2896
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2897 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2898 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2314 2917
2315 { 2918 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2919 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 2920
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2921 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 2922 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 2923
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2924 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 2925 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 2926 }
2326 2927
2327 coroapi.ver = CORO_API_VERSION; 2928 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 2929 coroapi.rev = CORO_API_REVISION;
2329 2930
… …
2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2949 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2349} 2950}
2350 2951
2351SV * 2952SV *
2352new (char *klass, ...) 2953new (char *klass, ...)
2954 ALIAS:
2955 Coro::new = 1
2353 CODE: 2956 CODE:
2354{ 2957{
2355 struct coro *coro; 2958 struct coro *coro;
2356 MAGIC *mg; 2959 MAGIC *mg;
2357 HV *hv; 2960 HV *hv;
2961 CV *cb;
2358 int i; 2962 int i;
2963
2964 if (items > 1)
2965 {
2966 cb = coro_sv_2cv (aTHX_ ST (1));
2967
2968 if (!ix)
2969 {
2970 if (CvISXSUB (cb))
2971 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2972
2973 if (!CvROOT (cb))
2974 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2975 }
2976 }
2359 2977
2360 Newz (0, coro, 1, struct coro); 2978 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV (); 2979 coro->args = newAV ();
2362 coro->flags = CF_NEW; 2980 coro->flags = CF_NEW;
2363 2981
… …
2368 coro->hv = hv = newHV (); 2986 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2987 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP; 2988 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2989 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372 2990
2991 if (items > 1)
2992 {
2373 av_extend (coro->args, items - 1); 2993 av_extend (coro->args, items - 1 + ix - 1);
2994
2995 if (ix)
2996 {
2997 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2998 cb = cv_coro_run;
2999 }
3000
3001 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3002
2374 for (i = 1; i < items; i++) 3003 for (i = 2; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i))); 3004 av_push (coro->args, newSVsv (ST (i)));
3005 }
2376} 3006}
2377 OUTPUT: 3007 OUTPUT:
2378 RETVAL 3008 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3009
2385void 3010void
2386transfer (...) 3011transfer (...)
2387 PROTOTYPE: $$ 3012 PROTOTYPE: $$
2388 CODE: 3013 CODE:
… …
2398void 3023void
2399_exit (int code) 3024_exit (int code)
2400 PROTOTYPE: $ 3025 PROTOTYPE: $
2401 CODE: 3026 CODE:
2402 _exit (code); 3027 _exit (code);
3028
3029SV *
3030clone (Coro::State coro)
3031 CODE:
3032{
3033#if CORO_CLONE
3034 struct coro *ncoro = coro_clone (aTHX_ coro);
3035 MAGIC *mg;
3036 /* TODO: too much duplication */
3037 ncoro->hv = newHV ();
3038 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3039 mg->mg_flags |= MGf_DUP;
3040 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3041#else
3042 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3043#endif
3044}
3045 OUTPUT:
3046 RETVAL
2403 3047
2404int 3048int
2405cctx_stacksize (int new_stacksize = 0) 3049cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3050 PROTOTYPE: ;$
2407 CODE: 3051 CODE:
… …
2457 eval = 1 3101 eval = 1
2458 CODE: 3102 CODE:
2459{ 3103{
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3104 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2461 { 3105 {
2462 struct coro temp; 3106 struct coro *current = SvSTATE_current;
2463 3107
2464 if (!(coro->flags & CF_RUNNING)) 3108 if (current != coro)
2465 { 3109 {
2466 PUTBACK; 3110 PUTBACK;
2467 save_perl (aTHX_ &temp); 3111 save_perl (aTHX_ current);
2468 load_perl (aTHX_ coro); 3112 load_perl (aTHX_ coro);
3113 SPAGAIN;
2469 } 3114 }
2470 3115
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3116 PUSHSTACK;
3117
2477 PUSHMARK (SP); 3118 PUSHMARK (SP);
3119 PUTBACK;
2478 3120
2479 if (ix) 3121 if (ix)
2480 eval_sv (coderef, 0); 3122 eval_sv (coderef, 0);
2481 else 3123 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3124 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3125
2484 POPSTACK; 3126 POPSTACK;
2485 SPAGAIN; 3127 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3128
2491 if (!(coro->flags & CF_RUNNING)) 3129 if (current != coro)
2492 { 3130 {
3131 PUTBACK;
2493 save_perl (aTHX_ coro); 3132 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3133 load_perl (aTHX_ current);
2495 SPAGAIN; 3134 SPAGAIN;
2496 } 3135 }
2497 } 3136 }
2498} 3137}
2499 3138
… …
2503 ALIAS: 3142 ALIAS:
2504 is_ready = CF_READY 3143 is_ready = CF_READY
2505 is_running = CF_RUNNING 3144 is_running = CF_RUNNING
2506 is_new = CF_NEW 3145 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3146 is_destroyed = CF_DESTROYED
3147 is_suspended = CF_SUSPENDED
2508 CODE: 3148 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3149 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3150 OUTPUT:
2511 RETVAL 3151 RETVAL
2512 3152
… …
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3154throw (Coro::State self, SV *throw = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3155 PROTOTYPE: $;$
2516 CODE: 3156 CODE:
2517{ 3157{
2518 struct coro *current = SvSTATE_current; 3158 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3159 SV **throwp = self == current ? &CORO_THROW : &self->except;
2520 SvREFCNT_dec (*throwp); 3160 SvREFCNT_dec (*throwp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3161 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522} 3162}
2523 3163
2524void 3164void
… …
2528 3168
2529SV * 3169SV *
2530has_cctx (Coro::State coro) 3170has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3171 PROTOTYPE: $
2532 CODE: 3172 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3173 /* maybe manage the running flag differently */
3174 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3175 OUTPUT:
2535 RETVAL 3176 RETVAL
2536 3177
2537int 3178int
2538is_traced (Coro::State coro) 3179is_traced (Coro::State coro)
… …
2558 3199
2559void 3200void
2560force_cctx () 3201force_cctx ()
2561 PROTOTYPE: 3202 PROTOTYPE:
2562 CODE: 3203 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3204 cctx_current->idle_sp = 0;
2564 3205
2565void 3206void
2566swap_defsv (Coro::State self) 3207swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3208 PROTOTYPE: $
2568 ALIAS: 3209 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3217 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3218
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3219 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3220 }
2580 3221
3222void
3223cancel (Coro::State self)
3224 CODE:
3225 coro_state_destroy (aTHX_ self);
3226 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3227
2581 3228
2582MODULE = Coro::State PACKAGE = Coro 3229MODULE = Coro::State PACKAGE = Coro
2583 3230
2584BOOT: 3231BOOT:
2585{ 3232{
2586 int i;
2587
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3233 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3234 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 3235 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3236 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3237 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 SvREADONLY_on (coro_current); 3238 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3239 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3240 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3241 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3242
3243 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3244 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3245 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3246 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2594 3247
2595 coro_stash = gv_stashpv ("Coro", TRUE); 3248 coro_stash = gv_stashpv ("Coro", TRUE);
2596 3249
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3250 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3251 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3252 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3253 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3254 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3255 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
2603 3256
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606
2607 { 3257 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3258 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 3259
2610 coroapi.schedule = api_schedule; 3260 coroapi.schedule = api_schedule;
3261 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 3262 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 3263 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 3264 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 3265 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 3266 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 3267 coroapi.current = coro_current;
2617 3268
2618 GCoroAPI = &coroapi; 3269 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 3270 sv_setiv (sv, (IV)&coroapi);
2620 SvREADONLY_on (sv); 3271 SvREADONLY_on (sv);
2621 } 3272 }
2622} 3273}
3274
3275void
3276terminate (...)
3277 CODE:
3278 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2623 3279
2624void 3280void
2625schedule (...) 3281schedule (...)
2626 CODE: 3282 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3283 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3284
3285void
3286schedule_to (...)
3287 CODE:
3288 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3289
3290void
3291cede_to (...)
3292 CODE:
3293 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2628 3294
2629void 3295void
2630cede (...) 3296cede (...)
2631 CODE: 3297 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 3298 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2687 CODE: 3353 CODE:
2688 RETVAL = coro_nready; 3354 RETVAL = coro_nready;
2689 OUTPUT: 3355 OUTPUT:
2690 RETVAL 3356 RETVAL
2691 3357
2692# for async_pool speedup
2693void 3358void
2694_pool_1 (SV *cb) 3359suspend (Coro::State self)
3360 PROTOTYPE: $
2695 CODE: 3361 CODE:
2696{ 3362 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 3363
2704 if (!invoke) 3364void
3365resume (Coro::State self)
3366 PROTOTYPE: $
3367 CODE:
3368 self->flags &= ~CF_SUSPENDED;
3369
3370void
3371_pool_handler (...)
3372 CODE:
3373 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3374
3375void
3376async_pool (SV *cv, ...)
3377 PROTOTYPE: &@
3378 PPCODE:
3379{
3380 HV *hv = (HV *)av_pop (av_async_pool);
3381 AV *av = newAV ();
3382 SV *cb = ST (0);
3383 int i;
3384
3385 av_extend (av, items - 2);
3386 for (i = 1; i < items; ++i)
3387 av_push (av, SvREFCNT_inc_NN (ST (i)));
3388
3389 if ((SV *)hv == &PL_sv_undef)
2705 { 3390 {
2706 SV *old = PL_diehook; 3391 PUSHMARK (SP);
2707 PL_diehook = 0; 3392 EXTEND (SP, 2);
2708 SvREFCNT_dec (old); 3393 PUSHs (sv_Coro);
2709 croak ("\3async_pool terminate\2\n"); 3394 PUSHs ((SV *)cv_pool_handler);
3395 PUTBACK;
3396 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3397 SPAGAIN;
3398
3399 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2710 } 3400 }
2711 3401
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 3402 {
2725 av_fill (defav, len - 1); 3403 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 3404
2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3405 assert (!coro->invoke_cb);
3406 assert (!coro->invoke_av);
3407 coro->invoke_cb = SvREFCNT_inc (cb);
3408 coro->invoke_av = av;
2728 } 3409 }
3410
3411 api_ready (aTHX_ (SV *)hv);
3412
3413 if (GIMME_V != G_VOID)
3414 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3415 else
3416 SvREFCNT_dec (hv);
2729} 3417}
3418
3419SV *
3420rouse_cb ()
3421 PROTOTYPE:
3422 CODE:
3423 RETVAL = coro_new_rouse_cb (aTHX);
3424 OUTPUT:
3425 RETVAL
2730 3426
2731void 3427void
2732_pool_2 (SV *cb) 3428rouse_wait (...)
3429 PROTOTYPE: ;$
3430 PPCODE:
3431 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3432
3433void
3434on_enter (SV *block)
3435 ALIAS:
3436 on_leave = 1
3437 PROTOTYPE: &
2733 CODE: 3438 CODE:
2734{ 3439{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 3440 struct coro *coro = SvSTATE_current;
3441 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 3442
2738 sv_setsv (cb, &PL_sv_undef); 3443 block = (SV *)coro_sv_2cv (aTHX_ block);
2739 3444
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3445 if (!*avp)
2741 coro->saved_deffh = 0; 3446 *avp = newAV ();
2742 3447
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 3448 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 3449
2752 av_clear (GvAV (PL_defgv)); 3450 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 3451 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 3452
2756 coro->prio = 0; 3453 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 3454 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3455 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 3456}
2763 3457
2764 3458
2765MODULE = Coro::State PACKAGE = PerlIO::cede 3459MODULE = Coro::State PACKAGE = PerlIO::cede
2766 3460
… …
2769 3463
2770 3464
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 3465MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 3466
2773SV * 3467SV *
2774new (SV *klass, SV *count_ = 0) 3468new (SV *klass, SV *count = 0)
2775 CODE: 3469 CODE:
2776{ 3470 RETVAL = sv_bless (
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3471 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2778 AV *av = newAV (); 3472 GvSTASH (CvGV (cv))
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3473 );
2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3474 OUTPUT:
2781} 3475 RETVAL
3476
3477# helper for Coro::Channel and others
3478SV *
3479_alloc (int count)
3480 CODE:
3481 RETVAL = coro_waitarray_new (aTHX_ count);
2782 OUTPUT: 3482 OUTPUT:
2783 RETVAL 3483 RETVAL
2784 3484
2785SV * 3485SV *
2786count (SV *self) 3486count (SV *self)
… …
2795 adjust = 1 3495 adjust = 1
2796 CODE: 3496 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3497 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798 3498
2799void 3499void
2800down (SV *self) 3500down (...)
2801 CODE: 3501 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3502 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3503
3504void
3505wait (...)
3506 CODE:
3507 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 3508
2804void 3509void
2805try (SV *self) 3510try (SV *self)
2806 PPCODE: 3511 PPCODE:
2807{ 3512{
… …
2819 XSRETURN_NO; 3524 XSRETURN_NO;
2820} 3525}
2821 3526
2822void 3527void
2823waiters (SV *self) 3528waiters (SV *self)
2824 CODE: 3529 PPCODE:
2825{ 3530{
2826 AV *av = (AV *)SvRV (self); 3531 AV *av = (AV *)SvRV (self);
3532 int wcount = AvFILLp (av) + 1 - 1;
2827 3533
2828 if (GIMME_V == G_SCALAR) 3534 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3535 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 3536 else
2831 { 3537 {
2832 int i; 3538 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 3539 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 3540 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 3541 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 3542 }
2837} 3543}
3544
3545MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3546
3547void
3548_may_delete (SV *sem, int count, int extra_refs)
3549 PPCODE:
3550{
3551 AV *av = (AV *)SvRV (sem);
3552
3553 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3554 && AvFILLp (av) == 0 /* no waiters, just count */
3555 && SvIV (AvARRAY (av)[0]) == count)
3556 XSRETURN_YES;
3557
3558 XSRETURN_NO;
3559}
3560
3561MODULE = Coro::State PACKAGE = Coro::Signal
3562
3563SV *
3564new (SV *klass)
3565 CODE:
3566 RETVAL = sv_bless (
3567 coro_waitarray_new (aTHX_ 0),
3568 GvSTASH (CvGV (cv))
3569 );
3570 OUTPUT:
3571 RETVAL
3572
3573void
3574wait (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3577
3578void
3579broadcast (SV *self)
3580 CODE:
3581{
3582 AV *av = (AV *)SvRV (self);
3583 coro_signal_wake (aTHX_ av, AvFILLp (av));
3584}
3585
3586void
3587send (SV *self)
3588 CODE:
3589{
3590 AV *av = (AV *)SvRV (self);
3591
3592 if (AvFILLp (av))
3593 coro_signal_wake (aTHX_ av, 1);
3594 else
3595 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3596}
3597
3598IV
3599awaited (SV *self)
3600 CODE:
3601 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3602 OUTPUT:
3603 RETVAL
2838 3604
2839 3605
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 3606MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 3607
2842BOOT: 3608BOOT:
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 3623 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 3624 if (coro_nready >= incede)
2859 { 3625 {
2860 PUSHMARK (SP); 3626 PUSHMARK (SP);
2861 PUTBACK; 3627 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3628 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 3629 }
2865 3630
2866 --incede; 3631 --incede;
2867} 3632}
2868 3633
… …
2871 3636
2872void 3637void
2873_register (char *target, char *proto, SV *req) 3638_register (char *target, char *proto, SV *req)
2874 CODE: 3639 CODE:
2875{ 3640{
2876 HV *st; 3641 CV *req_cv = coro_sv_2cv (aTHX_ req);
2877 GV *gvp; 3642 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 3643 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3644 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 3645 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 3646}
2882 3647

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