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Comparing Coro/Coro/State.xs (file contents):
Revision 1.268 by root, Fri Nov 14 06:41:41 2008 UTC vs.
Revision 1.331 by root, Thu Nov 27 12:00:59 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static 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);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 177
188struct transfer_args 178static AV *av_destroy; /* destruction queue */
189{ 179static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
191};
192 181
193static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 184static SV *rv_diehook;
196static SV *rv_warnhook; 185static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
198 187
199/* async_pool helper stuff */ 188/* async_pool helper stuff */
200static SV *sv_pool_rss; 189static SV *sv_pool_rss;
201static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
202static 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;
203 196
204/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
205static SV *sv_activity; 198static SV *sv_activity;
206 199
207static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 210};
218 211
219/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 213typedef struct coro_cctx
214{
221 struct coro_cctx *next; 215 struct coro_cctx *next;
222 216
223 /* the stack */ 217 /* the stack */
224 void *sptr; 218 void *sptr;
225 size_t ssize; 219 size_t ssize;
… …
234#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
235 int valgrind_id; 229 int valgrind_id;
236#endif 230#endif
237 unsigned char flags; 231 unsigned char flags;
238} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
239 237
240enum { 238enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 243};
246 244
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 246typedef struct
247{
249 SV *defsv; 248 SV *defsv;
250 AV *defav; 249 AV *defav;
251 SV *errsv; 250 SV *errsv;
252 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 253#define VAR(name,type) type name;
254# include "state.h" 254# include "state.h"
255#undef VAR 255#undef VAR
256} perl_slots; 256} perl_slots;
257 257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 259
260/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
261struct coro { 261struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 263 coro_cctx *cctx;
264 264
265 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 267 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
268 269
270 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
273 276
274 /* statistics */ 277 /* statistics */
275 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
276 279
277 /* coro process data */ 280 /* coro process data */
278 int prio; 281 int prio;
279 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
280 284
281 /* async_pool */ 285 /* async_pool */
282 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
283 289
284 /* linked list */ 290 /* linked list */
285 struct coro *next, *prev; 291 struct coro *next, *prev;
286}; 292};
287 293
288typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
290 301
291/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
292 303
293#define PRIO_MAX 3 304#define PRIO_MAX 3
294#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
299 310
300/* for Coro.pm */ 311/* for Coro.pm */
301static SV *coro_current; 312static SV *coro_current;
302static SV *coro_readyhook; 313static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
309static SV * 321static SV *
310coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
339static AV * 360static AV *
340coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
341{ 362{
342 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
344 365
345 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
360 381
361static void 382static void
362free_padlist (pTHX_ AV *padlist) 383free_padlist (pTHX_ AV *padlist)
363{ 384{
364 /* may be during global destruction */ 385 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 386 if (!IN_DESTRUCT)
366 { 387 {
367 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
389
368 while (i >= 0) 390 while (i >= 0)
369 { 391 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 392 /* we try to be extra-careful here */
371 if (svp) 393 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 394
373 SV *sv; 395 I32 i = AvFILLp (av);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 396
397 while (i >= 0)
398 SvREFCNT_dec (AvARRAY (av)[i--]);
399
400 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 401 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 402 }
380 403
404 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 405 SvREFCNT_dec ((SV*)padlist);
382 } 406 }
383} 407}
384 408
385static int 409static int
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 419 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 420
397 return 0; 421 return 0;
398} 422}
399 423
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 424#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 425#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 426
403static MGVTBL coro_cv_vtbl = { 427static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 428 0, 0, 0, 0,
405 coro_cv_free 429 coro_cv_free
406}; 430};
407 431
432#define CORO_MAGIC_NN(sv, type) \
433 (expect_true (SvMAGIC (sv)->mg_type == type) \
434 ? SvMAGIC (sv) \
435 : mg_find (sv, type))
436
408#define CORO_MAGIC(sv, type) \ 437#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 438 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 439 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 440 : 0)
414 441
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 442#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 443#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 444
418INLINE struct coro * 445INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 446SvSTATE_ (pTHX_ SV *coro)
420{ 447{
421 HV *stash; 448 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 465 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 466 return (struct coro *)mg->mg_ptr;
440} 467}
441 468
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 469#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
470
471/* faster than SvSTATE, but expects a coroutine hv */
472#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
473#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 474
444/* the next two functions merely cache the padlists */ 475/* the next two functions merely cache the padlists */
445static void 476static void
446get_padlist (pTHX_ CV *cv) 477get_padlist (pTHX_ CV *cv)
447{ 478{
… …
453 else 484 else
454 { 485 {
455#if CORO_PREFER_PERL_FUNCTIONS 486#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 487 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 488 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 489 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 490 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 491 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 492 SvREFCNT_dec (cp);
462#else 493#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 494 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 495#endif
465 } 496 }
466} 497}
467 498
468static void 499static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 506 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 507
477 av = (AV *)mg->mg_obj; 508 av = (AV *)mg->mg_obj;
478 509
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 510 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 511 av_extend (av, AvFILLp (av) + 1);
481 512
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 513 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 514}
484 515
485/** load & save, init *******************************************************/ 516/** load & save, init *******************************************************/
… …
490 perl_slots *slot = c->slot; 521 perl_slots *slot = c->slot;
491 c->slot = 0; 522 c->slot = 0;
492 523
493 PL_mainstack = c->mainstack; 524 PL_mainstack = c->mainstack;
494 525
495 GvSV (PL_defgv) = slot->defsv; 526 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 527 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 528 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 529 GvSV (irsgv) = slot->irsgv;
530 GvHV (PL_hintgv) = slot->hinthv;
499 531
500 #define VAR(name,type) PL_ ## name = slot->name; 532 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 533 # include "state.h"
502 #undef VAR 534 #undef VAR
503 535
… …
514 CvPADLIST (cv) = (AV *)POPs; 546 CvPADLIST (cv) = (AV *)POPs;
515 } 547 }
516 548
517 PUTBACK; 549 PUTBACK;
518 } 550 }
551
552 slf_frame = c->slf_frame;
553 CORO_THROW = c->except;
519} 554}
520 555
521static void 556static void
522save_perl (pTHX_ Coro__State c) 557save_perl (pTHX_ Coro__State c)
523{ 558{
559 c->except = CORO_THROW;
560 c->slf_frame = slf_frame;
561
524 { 562 {
525 dSP; 563 dSP;
526 I32 cxix = cxstack_ix; 564 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 565 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 566 PERL_SI *top_si = PL_curstackinfo;
… …
583 c->mainstack = PL_mainstack; 621 c->mainstack = PL_mainstack;
584 622
585 { 623 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 624 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 625
588 slot->defav = GvAV (PL_defgv); 626 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 627 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 628 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 629 slot->irsgv = GvSV (irsgv);
630 slot->hinthv = GvHV (PL_hintgv);
592 631
593 #define VAR(name,type) slot->name = PL_ ## name; 632 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 633 # include "state.h"
595 #undef VAR 634 #undef VAR
596 } 635 }
597} 636}
598 637
599/* 638/*
600 * allocate various perl stacks. This is an exact copy 639 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 640 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 641 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 642 * not usually need a lot of stackspace.
604 */ 643 */
605#if CORO_PREFER_PERL_FUNCTIONS 644#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 645# define coro_init_stacks(thx) init_stacks ()
607#else 646#else
608static void 647static void
609coro_init_stacks (pTHX) 648coro_init_stacks (pTHX)
610{ 649{
611 PL_curstackinfo = new_stackinfo(32, 8); 650 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 714 Safefree (PL_retstack);
676#endif 715#endif
677} 716}
678 717
718#define CORO_RSS \
719 rss += sizeof (SYM (curstackinfo)); \
720 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
721 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
722 rss += SYM (tmps_max) * sizeof (SV *); \
723 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
724 rss += SYM (scopestack_max) * sizeof (I32); \
725 rss += SYM (savestack_max) * sizeof (ANY);
726
679static size_t 727static size_t
680coro_rss (pTHX_ struct coro *coro) 728coro_rss (pTHX_ struct coro *coro)
681{ 729{
682 size_t rss = sizeof (*coro); 730 size_t rss = sizeof (*coro);
683 731
684 if (coro->mainstack) 732 if (coro->mainstack)
685 { 733 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 734 if (coro->flags & CF_RUNNING)
690 { 735 {
691 slot = &tmp_slot; 736 #define SYM(sym) PL_ ## sym
692 737 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 738 #undef SYM
696 } 739 }
697 else 740 else
698 slot = coro->slot;
699
700 if (slot)
701 { 741 {
702 rss += sizeof (slot->curstackinfo); 742 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 743 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 744 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 745 }
714 } 746 }
715 747
716 return rss; 748 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_set_stacklevel calling us */
722#define SSL_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
724#define SSL_TAIL set_stacklevel_tail (aTHX)
725
726INLINE void
727set_stacklevel_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 749}
745 750
746/** coroutine stack handling ************************************************/ 751/** coroutine stack handling ************************************************/
747 752
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 753static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 839
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 840 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 841}
837 842
838static void 843static void
844prepare_nop (pTHX_ struct coro_transfer_args *ta)
845{
846 /* kind of mega-hacky, but works */
847 ta->next = ta->prev = (struct coro *)ta;
848}
849
850static int
851slf_check_nop (pTHX_ struct CoroSLF *frame)
852{
853 return 0;
854}
855
856static int
857slf_check_repeat (pTHX_ struct CoroSLF *frame)
858{
859 return 1;
860}
861
862static UNOP coro_setup_op;
863
864static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 865coro_setup (pTHX_ struct coro *coro)
840{ 866{
841 /* 867 /*
842 * emulate part of the perl startup here. 868 * emulate part of the perl startup here.
843 */ 869 */
… …
845 871
846 PL_runops = RUNOPS_DEFAULT; 872 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 873 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 874 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 875 PL_comppad = 0;
876 PL_comppad_name = 0;
877 PL_comppad_name_fill = 0;
878 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 879 PL_curpm = 0;
851 PL_curpad = 0; 880 PL_curpad = 0;
852 PL_localizing = 0; 881 PL_localizing = 0;
853 PL_dirty = 0; 882 PL_dirty = 0;
854 PL_restartop = 0; 883 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 884#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 885 PL_parser = 0;
857#endif 886#endif
887 PL_hints = 0;
858 888
859 /* recreate the die/warn hooks */ 889 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 890 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 891 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 892
863 GvSV (PL_defgv) = newSV (0); 893 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 894 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 895 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 896 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
897 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 898 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 899 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 900
870 { 901 {
871 dSP; 902 dSP;
872 UNOP myop; 903 UNOP myop;
873 904
874 Zero (&myop, 1, UNOP); 905 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 906 myop.op_next = Nullop;
907 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 908 myop.op_flags = OPf_WANT_VOID;
877 909
878 PUSHMARK (SP); 910 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 911 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 912 PUTBACK;
881 PL_op = (OP *)&myop; 913 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 915 }
885 916
886 /* this newly created coroutine might be run on an existing cctx which most 917 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 918 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 919 */
890 SSL_HEAD; 920 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
921 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
922
923 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
924 coro_setup_op.op_next = PL_op;
925 coro_setup_op.op_type = OP_ENTERSUB;
926 coro_setup_op.op_ppaddr = pp_slf;
927 /* no flags etc. required, as an init function won't be called */
928
929 PL_op = (OP *)&coro_setup_op;
930
931 /* copy throw, in case it was set before coro_setup */
932 CORO_THROW = coro->except;
891} 933}
892 934
893static void 935static void
894coro_destruct (pTHX_ struct coro *coro) 936coro_destruct (pTHX_ struct coro *coro)
895{ 937{
… …
914 SvREFCNT_dec (GvAV (PL_defgv)); 956 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv)); 957 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv); 958 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs); 959 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv)); 960 SvREFCNT_dec (GvSV (irsgv));
961 SvREFCNT_dec (GvHV (PL_hintgv));
919 962
920 SvREFCNT_dec (PL_diehook); 963 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 964 SvREFCNT_dec (PL_warnhook);
922 965
923 SvREFCNT_dec (coro->saved_deffh); 966 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 967 SvREFCNT_dec (coro->rouse_cb);
968 SvREFCNT_dec (coro->invoke_cb);
969 SvREFCNT_dec (coro->invoke_av);
925 970
926 coro_destruct_stacks (aTHX); 971 coro_destruct_stacks (aTHX);
927} 972}
928 973
929INLINE void 974INLINE void
… …
939static int 984static int
940runops_trace (pTHX) 985runops_trace (pTHX)
941{ 986{
942 COP *oldcop = 0; 987 COP *oldcop = 0;
943 int oldcxix = -2; 988 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 989
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 990 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 991 {
949 PERL_ASYNC_CHECK (); 992 PERL_ASYNC_CHECK ();
950 993
951 if (cctx->flags & CC_TRACE_ALL) 994 if (cctx_current->flags & CC_TRACE_ALL)
952 { 995 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 996 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 997 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 998 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 999 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1000 AV *av = newAV (); /* return values */
958 SV **cb; 1001 SV **cb;
… …
995 1038
996 if (PL_curcop != &PL_compiling) 1039 if (PL_curcop != &PL_compiling)
997 { 1040 {
998 SV **cb; 1041 SV **cb;
999 1042
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1043 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1044 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1045 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1046
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1047 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1048 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1049 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1050 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1051 SV *fullname = sv_2mortal (newSV (0));
1010 1052
1011 if (isGV (gv)) 1053 if (isGV (gv))
… …
1016 SAVETMPS; 1058 SAVETMPS;
1017 EXTEND (SP, 3); 1059 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1060 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1061 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1062 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1063 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1064 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1065 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1066 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1067 SPAGAIN;
1026 FREETMPS; 1068 FREETMPS;
… …
1029 } 1071 }
1030 1072
1031 oldcxix = cxstack_ix; 1073 oldcxix = cxstack_ix;
1032 } 1074 }
1033 1075
1034 if (cctx->flags & CC_TRACE_LINE) 1076 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1077 {
1036 dSP; 1078 dSP;
1037 1079
1038 PL_runops = RUNOPS_DEFAULT; 1080 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1081 ENTER;
… …
1058 1100
1059 TAINT_NOT; 1101 TAINT_NOT;
1060 return 0; 1102 return 0;
1061} 1103}
1062 1104
1105static struct CoroSLF cctx_ssl_frame;
1106
1063static void 1107static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1108slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1109{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1110 ta->prev = 0;
1068} 1111}
1069 1112
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1113static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1114slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1115{
1073/* also initialises PL_top_env */ 1116 *frame = cctx_ssl_frame;
1117
1118 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1119}
1120
1121/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1122static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1123cctx_prepare (pTHX)
1076{ 1124{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1125 PL_top_env = &PL_start_env;
1081 1126
1082 if (cctx->flags & CC_TRACE) 1127 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1128 PL_runops = runops_trace;
1084 1129
1085 Zero (&myop, 1, UNOP); 1130 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1131 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1132 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1133 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1134
1089 PUSHMARK (SP); 1135 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1136 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1137
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1138 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1139 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1140}
1098 1141
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1142/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1143INLINE void
1101transfer_tail (pTHX) 1144transfer_tail (pTHX)
1102{ 1145{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1146 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1147}
1119 1148
1120/* 1149/*
1121 * this is a _very_ stripped down perl interpreter ;) 1150 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1151 */
… …
1129# endif 1158# endif
1130#endif 1159#endif
1131 { 1160 {
1132 dTHX; 1161 dTHX;
1133 1162
1134 /* we are the alternative tail to pp_set_stacklevel */ 1163 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1164 /* not doing so will re-execute it, which is exactly what we want */
1136 SSL_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1165 /* PL_nop = PL_nop->op_next */
1140 1166
1141 /* inject a fake subroutine call to cctx_init */ 1167 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1168 cctx_prepare (aTHX);
1143 1169
1144 /* cctx_run is the alternative tail of transfer() */ 1170 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1171 transfer_tail (aTHX);
1146 1172
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1173 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1174 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1175 perl_run (PL_curinterp);
1176 /*
1177 * Unfortunately, there is no way to get at the return values of the
1178 * coro body here, as perl_run destroys these
1179 */
1150 1180
1151 /* 1181 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1182 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1183 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1184 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1185 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1186 * coroutine as Coro has no such concept.
1187 * This actually isn't valid with the pthread backend, but OSes requiring
1188 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1189 */
1158 PL_top_env = main_top_env; 1190 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1191 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1192 }
1161} 1193}
… …
1238cctx_destroy (coro_cctx *cctx) 1270cctx_destroy (coro_cctx *cctx)
1239{ 1271{
1240 if (!cctx) 1272 if (!cctx)
1241 return; 1273 return;
1242 1274
1275 assert (cctx != cctx_current);//D temporary
1276
1243 --cctx_count; 1277 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1278 coro_destroy (&cctx->cctx);
1245 1279
1246 /* coro_transfer creates new, empty cctx's */ 1280 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1281 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1339/** coroutine switching *****************************************************/
1306 1340
1307static void 1341static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1342transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1343{
1344 /* TODO: throwing up here is considered harmful */
1345
1310 if (expect_true (prev != next)) 1346 if (expect_true (prev != next))
1311 { 1347 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1348 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1349 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1350
1315 if (expect_false (next->flags & CF_RUNNING)) 1351 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1353
1318 if (expect_false (next->flags & CF_DESTROYED)) 1354 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1355 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1356
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1357#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1358 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1359 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1360#endif
1325 } 1361 }
1326} 1362}
1327 1363
1328/* always use the TRANSFER macro */ 1364/* always use the TRANSFER macro */
1329static void NOINLINE 1365static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1366transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1367{
1332 dSTACKLEVEL; 1368 dSTACKLEVEL;
1333 1369
1334 /* sometimes transfer is only called to set idle_sp */ 1370 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1371 if (expect_false (!prev))
1336 { 1372 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1373 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1374 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1375 }
1340 else if (expect_true (prev != next)) 1376 else if (expect_true (prev != next))
1341 { 1377 {
1342 coro_cctx *prev__cctx; 1378 coro_cctx *cctx_prev;
1343 1379
1344 if (expect_false (prev->flags & CF_NEW)) 1380 if (expect_false (prev->flags & CF_NEW))
1345 { 1381 {
1346 /* create a new empty/source context */ 1382 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1383 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1384 prev->flags |= CF_RUNNING;
1350 } 1385 }
1351 1386
1352 prev->flags &= ~CF_RUNNING; 1387 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1388 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1389
1357 /* first get rid of the old state */ 1390 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1391 save_perl (aTHX_ prev);
1359 1392
1360 if (expect_false (next->flags & CF_NEW)) 1393 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1398 coro_setup (aTHX_ next);
1366 } 1399 }
1367 else 1400 else
1368 load_perl (aTHX_ next); 1401 load_perl (aTHX_ next);
1369 1402
1370 prev__cctx = prev->cctx; 1403 assert (!prev->cctx);//D temporary
1371 1404
1372 /* possibly untie and reuse the cctx */ 1405 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1406 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1407 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1408 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1409 && !force_cctx
1377 )) 1410 ))
1378 { 1411 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1412 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1413 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1414
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1415 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1416 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1417 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1418 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1419 next->cctx = cctx_get (aTHX);
1389 1420
1390 cctx_put (prev__cctx); 1421 cctx_put (cctx_current);
1391 } 1422 }
1423 else
1424 prev->cctx = cctx_current;
1392 1425
1393 ++next->usecount; 1426 ++next->usecount;
1394 1427
1395 if (expect_true (!next->cctx)) 1428 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1429 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1430
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1431 next->cctx = 0;
1399 transfer_next = next;
1400 1432
1401 if (expect_false (prev__cctx != next->cctx)) 1433 if (expect_false (cctx_prev != cctx_current))
1402 { 1434 {
1403 prev__cctx->top_env = PL_top_env; 1435 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1436 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1437 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1438 }
1407 1439
1408 transfer_tail (aTHX); 1440 transfer_tail (aTHX);
1409 } 1441 }
1410} 1442}
… …
1417static int 1449static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1450coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1451{
1420 if (coro->flags & CF_DESTROYED) 1452 if (coro->flags & CF_DESTROYED)
1421 return 0; 1453 return 0;
1454
1455 if (coro->on_destroy)
1456 coro->on_destroy (aTHX_ coro);
1422 1457
1423 coro->flags |= CF_DESTROYED; 1458 coro->flags |= CF_DESTROYED;
1424 1459
1425 if (coro->flags & CF_READY) 1460 if (coro->flags & CF_READY)
1426 { 1461 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1462 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1463 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1464 --coro_nready;
1431 UNLOCK;
1432 } 1465 }
1433 else 1466 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1467 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1468
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1469 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1470 {
1438 struct coro temp; 1471 struct coro temp;
1439 1472
1440 if (coro->flags & CF_RUNNING) 1473 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1474
1443 save_perl (aTHX_ &temp); 1475 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1476 load_perl (aTHX_ coro);
1445 1477
1446 coro_destruct (aTHX_ coro); 1478 coro_destruct (aTHX_ coro);
… …
1449 1481
1450 coro->slot = 0; 1482 coro->slot = 0;
1451 } 1483 }
1452 1484
1453 cctx_destroy (coro->cctx); 1485 cctx_destroy (coro->cctx);
1486 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1487 SvREFCNT_dec (coro->args);
1488 SvREFCNT_dec (CORO_THROW);
1455 1489
1456 if (coro->next) coro->next->prev = coro->prev; 1490 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1491 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1492 if (coro == coro_first) coro_first = coro->next;
1459 1493
… …
1497# define MGf_DUP 0 1531# define MGf_DUP 0
1498#endif 1532#endif
1499}; 1533};
1500 1534
1501static void 1535static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1536prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1537{
1504 ta->prev = SvSTATE (prev_sv); 1538 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1539 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1540 TRANSFER_CHECK (*ta);
1507} 1541}
1508 1542
1509static void 1543static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1544api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1545{
1512 dTHX;
1513 struct transfer_args ta; 1546 struct coro_transfer_args ta;
1514 1547
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1548 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1549 TRANSFER (ta, 1);
1517} 1550}
1518 1551
1552/*****************************************************************************/
1553/* gensub: simple closure generation utility */
1554
1555#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1556
1557/* create a closure from XS, returns a code reference */
1558/* the arg can be accessed via GENSUB_ARG from the callback */
1559/* the callback must use dXSARGS/XSRETURN */
1560static SV *
1561gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1562{
1563 CV *cv = (CV *)newSV (0);
1564
1565 sv_upgrade ((SV *)cv, SVt_PVCV);
1566
1567 CvANON_on (cv);
1568 CvISXSUB_on (cv);
1569 CvXSUB (cv) = xsub;
1570 GENSUB_ARG = arg;
1571
1572 return newRV_noinc ((SV *)cv);
1573}
1574
1519/** Coro ********************************************************************/ 1575/** Coro ********************************************************************/
1520 1576
1521static void 1577INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1578coro_enq (pTHX_ struct coro *coro)
1523{ 1579{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1580 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1525} 1581}
1526 1582
1527static SV * 1583INLINE SV *
1528coro_deq (pTHX) 1584coro_deq (pTHX)
1529{ 1585{
1530 int prio; 1586 int prio;
1531 1587
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1588 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1535 1591
1536 return 0; 1592 return 0;
1537} 1593}
1538 1594
1539static int 1595static int
1540api_ready (SV *coro_sv) 1596api_ready (pTHX_ SV *coro_sv)
1541{ 1597{
1542 dTHX;
1543 struct coro *coro; 1598 struct coro *coro;
1544 SV *sv_hook; 1599 SV *sv_hook;
1545 void (*xs_hook)(void); 1600 void (*xs_hook)(void);
1546 1601
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1602 coro = SvSTATE (coro_sv);
1551 1603
1552 if (coro->flags & CF_READY) 1604 if (coro->flags & CF_READY)
1553 return 0; 1605 return 0;
1554 1606
1555 coro->flags |= CF_READY; 1607 coro->flags |= CF_READY;
1556 1608
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1609 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1610 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1611
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1612 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1613 ++coro_nready;
1564 1614
1565 UNLOCK;
1566
1567 if (sv_hook) 1615 if (sv_hook)
1568 { 1616 {
1569 dSP; 1617 dSP;
1570 1618
1571 ENTER; 1619 ENTER;
1572 SAVETMPS; 1620 SAVETMPS;
1573 1621
1574 PUSHMARK (SP); 1622 PUSHMARK (SP);
1575 PUTBACK; 1623 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1624 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1625
1579 FREETMPS; 1626 FREETMPS;
1580 LEAVE; 1627 LEAVE;
1581 } 1628 }
1582 1629
… …
1585 1632
1586 return 1; 1633 return 1;
1587} 1634}
1588 1635
1589static int 1636static int
1590api_is_ready (SV *coro_sv) 1637api_is_ready (pTHX_ SV *coro_sv)
1591{ 1638{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1639 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1640}
1596 1641
1642/* expects to own a reference to next->hv */
1597INLINE void 1643INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1644prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1645{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1646 SV *prev_sv = SvRV (coro_current);
1647
1644 ta->prev = SvSTATE (prev_sv); 1648 ta->prev = SvSTATE_hv (prev_sv);
1649 ta->next = next;
1650
1645 TRANSFER_CHECK (*ta); 1651 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1652
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1653 SvRV_set (coro_current, (SV *)next->hv);
1649 1654
1650 LOCK;
1651 free_coro_mortal (aTHX); 1655 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1656 coro_mortal = prev_sv;
1653 UNLOCK; 1657}
1658
1659static void
1660prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1661{
1662 for (;;)
1663 {
1664 SV *next_sv = coro_deq (aTHX);
1665
1666 if (expect_true (next_sv))
1667 {
1668 struct coro *next = SvSTATE_hv (next_sv);
1669
1670 /* cannot transfer to destroyed coros, skip and look for next */
1671 if (expect_false (next->flags & CF_DESTROYED))
1672 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1673 else
1674 {
1675 next->flags &= ~CF_READY;
1676 --coro_nready;
1677
1678 prepare_schedule_to (aTHX_ ta, next);
1679 break;
1680 }
1681 }
1682 else
1683 {
1684 /* nothing to schedule: call the idle handler */
1685 if (SvROK (sv_idle)
1686 && SvOBJECT (SvRV (sv_idle)))
1687 {
1688 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1689 api_ready (aTHX_ SvRV (sv_idle));
1690 --coro_nready;
1691 }
1692 else
1693 {
1694 dSP;
1695
1696 ENTER;
1697 SAVETMPS;
1698
1699 PUSHMARK (SP);
1700 PUTBACK;
1701 call_sv (sv_idle, G_VOID | G_DISCARD);
1702
1703 FREETMPS;
1704 LEAVE;
1705 }
1706 }
1707 }
1654} 1708}
1655 1709
1656INLINE void 1710INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1711prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1712{
1659 api_ready (coro_current); 1713 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1714 prepare_schedule (aTHX_ ta);
1661} 1715}
1662 1716
1663static void 1717INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1718prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1719{
1666 SV *prev = SvRV (coro_current); 1720 SV *prev = SvRV (coro_current);
1667 1721
1668 if (coro_nready) 1722 if (coro_nready)
1669 { 1723 {
1670 prepare_schedule (aTHX_ ta); 1724 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1725 api_ready (aTHX_ prev);
1672 } 1726 }
1673 else 1727 else
1674 ta->prev = ta->next = SvSTATE (prev); 1728 prepare_nop (aTHX_ ta);
1675} 1729}
1676 1730
1677static void 1731static void
1678api_schedule (void) 1732api_schedule (pTHX)
1679{ 1733{
1680 dTHX;
1681 struct transfer_args ta; 1734 struct coro_transfer_args ta;
1682 1735
1683 prepare_schedule (aTHX_ &ta); 1736 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1737 TRANSFER (ta, 1);
1685} 1738}
1686 1739
1740static void
1741api_schedule_to (pTHX_ SV *coro_sv)
1742{
1743 struct coro_transfer_args ta;
1744 struct coro *next = SvSTATE (coro_sv);
1745
1746 SvREFCNT_inc_NN (coro_sv);
1747 prepare_schedule_to (aTHX_ &ta, next);
1748}
1749
1687static int 1750static int
1688api_cede (void) 1751api_cede (pTHX)
1689{ 1752{
1690 dTHX;
1691 struct transfer_args ta; 1753 struct coro_transfer_args ta;
1692 1754
1693 prepare_cede (aTHX_ &ta); 1755 prepare_cede (aTHX_ &ta);
1694 1756
1695 if (expect_true (ta.prev != ta.next)) 1757 if (expect_true (ta.prev != ta.next))
1696 { 1758 {
… …
1700 else 1762 else
1701 return 0; 1763 return 0;
1702} 1764}
1703 1765
1704static int 1766static int
1705api_cede_notself (void) 1767api_cede_notself (pTHX)
1706{ 1768{
1707 if (coro_nready) 1769 if (coro_nready)
1708 { 1770 {
1709 dTHX;
1710 struct transfer_args ta; 1771 struct coro_transfer_args ta;
1711 1772
1712 prepare_cede_notself (aTHX_ &ta); 1773 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1774 TRANSFER (ta, 1);
1714 return 1; 1775 return 1;
1715 } 1776 }
1716 else 1777 else
1717 return 0; 1778 return 0;
1718} 1779}
1719 1780
1720static void 1781static void
1721api_trace (SV *coro_sv, int flags) 1782api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1783{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1784 struct coro *coro = SvSTATE (coro_sv);
1785
1786 if (coro->flags & CF_RUNNING)
1787 croak ("cannot enable tracing on a running coroutine, caught");
1725 1788
1726 if (flags & CC_TRACE) 1789 if (flags & CC_TRACE)
1727 { 1790 {
1728 if (!coro->cctx) 1791 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1792 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1793 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1794 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 1795
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1796 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1797 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1798 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1799 {
… …
1741 else 1804 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1805 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1806 }
1744} 1807}
1745 1808
1746#if 0 1809static void
1810coro_call_on_destroy (pTHX_ struct coro *coro)
1811{
1812 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1813 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1814
1815 if (on_destroyp)
1816 {
1817 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1818
1819 while (AvFILLp (on_destroy) >= 0)
1820 {
1821 dSP; /* don't disturb outer sp */
1822 SV *cb = av_pop (on_destroy);
1823
1824 PUSHMARK (SP);
1825
1826 if (statusp)
1827 {
1828 int i;
1829 AV *status = (AV *)SvRV (*statusp);
1830 EXTEND (SP, AvFILLp (status) + 1);
1831
1832 for (i = 0; i <= AvFILLp (status); ++i)
1833 PUSHs (AvARRAY (status)[i]);
1834 }
1835
1836 PUTBACK;
1837 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1838 }
1839 }
1840}
1841
1842static void
1843slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1844{
1845 int i;
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *av = newAV ();
1848
1849 av_extend (av, items - 1);
1850 for (i = 0; i < items; ++i)
1851 av_push (av, SvREFCNT_inc_NN (arg [i]));
1852
1853 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1854
1855 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1856 api_ready (aTHX_ sv_manager);
1857
1858 frame->prepare = prepare_schedule;
1859 frame->check = slf_check_repeat;
1860}
1861
1862/*****************************************************************************/
1863/* async pool handler */
1864
1747static int 1865static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1866slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 1867{
1750 AV *padlist; 1868 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 1869 struct coro *coro = (struct coro *)frame->data;
1752 1870
1753 abort (); 1871 if (!coro->invoke_cb)
1872 return 1; /* loop till we have invoke */
1873 else
1874 {
1875 hv_store (hv, "desc", sizeof ("desc") - 1,
1876 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1877
1878 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1879
1880 {
1881 dSP;
1882 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1883 PUTBACK;
1884 }
1885
1886 SvREFCNT_dec (GvAV (PL_defgv));
1887 GvAV (PL_defgv) = coro->invoke_av;
1888 coro->invoke_av = 0;
1889
1890 return 0;
1891 }
1892}
1893
1894static void
1895slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 HV *hv = (HV *)SvRV (coro_current);
1898 struct coro *coro = SvSTATE_hv ((SV *)hv);
1899
1900 if (expect_true (coro->saved_deffh))
1901 {
1902 /* subsequent iteration */
1903 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1904 coro->saved_deffh = 0;
1905
1906 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1907 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1908 {
1909 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1910 coro->invoke_av = newAV ();
1911
1912 frame->prepare = prepare_nop;
1913 }
1914 else
1915 {
1916 av_clear (GvAV (PL_defgv));
1917 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1918
1919 coro->prio = 0;
1920
1921 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1922 api_trace (aTHX_ coro_current, 0);
1923
1924 frame->prepare = prepare_schedule;
1925 av_push (av_async_pool, SvREFCNT_inc (hv));
1926 }
1927 }
1928 else
1929 {
1930 /* first iteration, simply fall through */
1931 frame->prepare = prepare_nop;
1932 }
1933
1934 frame->check = slf_check_pool_handler;
1935 frame->data = (void *)coro;
1936}
1937
1938/*****************************************************************************/
1939/* rouse callback */
1940
1941#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1942
1943static void
1944coro_rouse_callback (pTHX_ CV *cv)
1945{
1946 dXSARGS;
1947 SV *data = (SV *)GENSUB_ARG;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 {
1951 /* first call, set args */
1952 AV *av = newAV ();
1953 SV *coro = SvRV (data);
1954
1955 SvRV_set (data, (SV *)av);
1956 api_ready (aTHX_ coro);
1957 SvREFCNT_dec (coro);
1958
1959 /* better take a full copy of the arguments */
1960 while (items--)
1961 av_store (av, items, newSVsv (ST (items)));
1962 }
1963
1964 XSRETURN_EMPTY;
1965}
1966
1967static int
1968slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1969{
1970 SV *data = (SV *)frame->data;
1971
1972 if (CORO_THROW)
1973 return 0;
1974
1975 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1976 return 1;
1977
1978 /* now push all results on the stack */
1979 {
1980 dSP;
1981 AV *av = (AV *)SvRV (data);
1982 int i;
1983
1984 EXTEND (SP, AvFILLp (av) + 1);
1985 for (i = 0; i <= AvFILLp (av); ++i)
1986 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1987
1988 /* we have stolen the elements, so ste length to zero and free */
1989 AvFILLp (av) = -1;
1990 av_undef (av);
1991
1992 PUTBACK;
1993 }
1754 1994
1755 return 0; 1995 return 0;
1756} 1996}
1757 1997
1758static MGVTBL coro_gensub_vtbl = { 1998static void
1759 0, 0, 0, 0, 1999slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2000{
1761}; 2001 SV *cb;
1762#endif 2002
2003 if (items)
2004 cb = arg [0];
2005 else
2006 {
2007 struct coro *coro = SvSTATE_current;
2008
2009 if (!coro->rouse_cb)
2010 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2011
2012 cb = sv_2mortal (coro->rouse_cb);
2013 coro->rouse_cb = 0;
2014 }
2015
2016 if (!SvROK (cb)
2017 || SvTYPE (SvRV (cb)) != SVt_PVCV
2018 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2019 croak ("Coro::rouse_wait called with illegal callback argument,");
2020
2021 {
2022 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2023 SV *data = (SV *)GENSUB_ARG;
2024
2025 frame->data = (void *)data;
2026 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2027 frame->check = slf_check_rouse_wait;
2028 }
2029}
2030
2031static SV *
2032coro_new_rouse_cb (pTHX)
2033{
2034 HV *hv = (HV *)SvRV (coro_current);
2035 struct coro *coro = SvSTATE_hv (hv);
2036 SV *data = newRV_inc ((SV *)hv);
2037 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2038
2039 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2040 SvREFCNT_dec (data); /* magicext increases the refcount */
2041
2042 SvREFCNT_dec (coro->rouse_cb);
2043 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2044
2045 return cb;
2046}
2047
2048/*****************************************************************************/
2049/* schedule-like-function opcode (SLF) */
2050
2051static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2052static const CV *slf_cv;
2053static SV **slf_argv;
2054static int slf_argc, slf_arga; /* count, allocated */
2055static I32 slf_ax; /* top of stack, for restore */
2056
2057/* this restores the stack in the case we patched the entersub, to */
2058/* recreate the stack frame as perl will on following calls */
2059/* since entersub cleared the stack */
2060static OP *
2061pp_restore (pTHX)
2062{
2063 int i;
2064 SV **SP = PL_stack_base + slf_ax;
2065
2066 PUSHMARK (SP);
2067
2068 EXTEND (SP, slf_argc + 1);
2069
2070 for (i = 0; i < slf_argc; ++i)
2071 PUSHs (sv_2mortal (slf_argv [i]));
2072
2073 PUSHs ((SV *)CvGV (slf_cv));
2074
2075 RETURNOP (slf_restore.op_first);
2076}
2077
2078static void
2079slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2080{
2081 SV **arg = (SV **)slf_frame.data;
2082
2083 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2084}
2085
2086static void
2087slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2088{
2089 if (items != 2)
2090 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2091
2092 frame->prepare = slf_prepare_transfer;
2093 frame->check = slf_check_nop;
2094 frame->data = (void *)arg; /* let's hope it will stay valid */
2095}
2096
2097static void
2098slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2099{
2100 frame->prepare = prepare_schedule;
2101 frame->check = slf_check_nop;
2102}
2103
2104static void
2105slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2106{
2107 struct coro *next = (struct coro *)slf_frame.data;
2108
2109 SvREFCNT_inc_NN (next->hv);
2110 prepare_schedule_to (aTHX_ ta, next);
2111}
2112
2113static void
2114slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 if (!items)
2117 croak ("Coro::schedule_to expects a coroutine argument, caught");
2118
2119 frame->data = (void *)SvSTATE (arg [0]);
2120 frame->prepare = slf_prepare_schedule_to;
2121 frame->check = slf_check_nop;
2122}
2123
2124static void
2125slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 api_ready (aTHX_ SvRV (coro_current));
2128
2129 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2130}
2131
2132static void
2133slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2134{
2135 frame->prepare = prepare_cede;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede_notself;
2143 frame->check = slf_check_nop;
2144}
2145
2146/*
2147 * these not obviously related functions are all rolled into one
2148 * function to increase chances that they all will call transfer with the same
2149 * stack offset
2150 * SLF stands for "schedule-like-function".
2151 */
2152static OP *
2153pp_slf (pTHX)
2154{
2155 I32 checkmark; /* mark SP to see how many elements check has pushed */
2156
2157 /* set up the slf frame, unless it has already been set-up */
2158 /* the latter happens when a new coro has been started */
2159 /* or when a new cctx was attached to an existing coroutine */
2160 if (expect_true (!slf_frame.prepare))
2161 {
2162 /* first iteration */
2163 dSP;
2164 SV **arg = PL_stack_base + TOPMARK + 1;
2165 int items = SP - arg; /* args without function object */
2166 SV *gv = *sp;
2167
2168 /* do a quick consistency check on the "function" object, and if it isn't */
2169 /* for us, divert to the real entersub */
2170 if (SvTYPE (gv) != SVt_PVGV
2171 || !GvCV (gv)
2172 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2173 return PL_ppaddr[OP_ENTERSUB](aTHX);
2174
2175 if (!(PL_op->op_flags & OPf_STACKED))
2176 {
2177 /* ampersand-form of call, use @_ instead of stack */
2178 AV *av = GvAV (PL_defgv);
2179 arg = AvARRAY (av);
2180 items = AvFILLp (av) + 1;
2181 }
2182
2183 /* now call the init function, which needs to set up slf_frame */
2184 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2185 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2186
2187 /* pop args */
2188 SP = PL_stack_base + POPMARK;
2189
2190 PUTBACK;
2191 }
2192
2193 /* now that we have a slf_frame, interpret it! */
2194 /* we use a callback system not to make the code needlessly */
2195 /* complicated, but so we can run multiple perl coros from one cctx */
2196
2197 do
2198 {
2199 struct coro_transfer_args ta;
2200
2201 slf_frame.prepare (aTHX_ &ta);
2202 TRANSFER (ta, 0);
2203
2204 checkmark = PL_stack_sp - PL_stack_base;
2205 }
2206 while (slf_frame.check (aTHX_ &slf_frame));
2207
2208 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2209
2210 /* exception handling */
2211 if (expect_false (CORO_THROW))
2212 {
2213 SV *exception = sv_2mortal (CORO_THROW);
2214
2215 CORO_THROW = 0;
2216 sv_setsv (ERRSV, exception);
2217 croak (0);
2218 }
2219
2220 /* return value handling - mostly like entersub */
2221 /* make sure we put something on the stack in scalar context */
2222 if (GIMME_V == G_SCALAR)
2223 {
2224 dSP;
2225 SV **bot = PL_stack_base + checkmark;
2226
2227 if (sp == bot) /* too few, push undef */
2228 bot [1] = &PL_sv_undef;
2229 else if (sp != bot + 1) /* too many, take last one */
2230 bot [1] = *sp;
2231
2232 SP = bot + 1;
2233
2234 PUTBACK;
2235 }
2236
2237 return NORMAL;
2238}
2239
2240static void
2241api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2242{
2243 int i;
2244 SV **arg = PL_stack_base + ax;
2245 int items = PL_stack_sp - arg + 1;
2246
2247 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2248
2249 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2250 && PL_op->op_ppaddr != pp_slf)
2251 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2252
2253 CvFLAGS (cv) |= CVf_SLF;
2254 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2255 slf_cv = cv;
2256
2257 /* we patch the op, and then re-run the whole call */
2258 /* we have to put the same argument on the stack for this to work */
2259 /* and this will be done by pp_restore */
2260 slf_restore.op_next = (OP *)&slf_restore;
2261 slf_restore.op_type = OP_CUSTOM;
2262 slf_restore.op_ppaddr = pp_restore;
2263 slf_restore.op_first = PL_op;
2264
2265 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2266
2267 if (PL_op->op_flags & OPf_STACKED)
2268 {
2269 if (items > slf_arga)
2270 {
2271 slf_arga = items;
2272 free (slf_argv);
2273 slf_argv = malloc (slf_arga * sizeof (SV *));
2274 }
2275
2276 slf_argc = items;
2277
2278 for (i = 0; i < items; ++i)
2279 slf_argv [i] = SvREFCNT_inc (arg [i]);
2280 }
2281 else
2282 slf_argc = 0;
2283
2284 PL_op->op_ppaddr = pp_slf;
2285 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2286
2287 PL_op = (OP *)&slf_restore;
2288}
1763 2289
1764/*****************************************************************************/ 2290/*****************************************************************************/
1765/* PerlIO::cede */ 2291/* PerlIO::cede */
1766 2292
1767typedef struct 2293typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2321 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2322 double now = nvtime ();
1797 2323
1798 if (now >= self->next) 2324 if (now >= self->next)
1799 { 2325 {
1800 api_cede (); 2326 api_cede (aTHX);
1801 self->next = now + self->every; 2327 self->next = now + self->every;
1802 } 2328 }
1803 2329
1804 return PerlIOBuf_flush (aTHX_ f); 2330 return PerlIOBuf_flush (aTHX_ f);
1805} 2331}
… …
1835 PerlIOBuf_get_cnt, 2361 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2362 PerlIOBuf_set_ptrcnt,
1837}; 2363};
1838 2364
1839/*****************************************************************************/ 2365/*****************************************************************************/
2366/* Coro::Semaphore & Coro::Signal */
1840 2367
1841static const CV *ssl_cv; /* for quick consistency check */
1842
1843static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *ssl_arg0;
1845static SV *ssl_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2368static SV *
1851pp_restore (pTHX) 2369coro_waitarray_new (pTHX_ int count)
1852{ 2370{
2371 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2372 AV *av = newAV ();
2373 SV **ary;
2374
2375 /* unfortunately, building manually saves memory */
2376 Newx (ary, 2, SV *);
2377 AvALLOC (av) = ary;
2378#if PERL_VERSION_ATLEAST (5,10,0)
2379 AvARRAY (av) = ary;
2380#else
2381 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2382 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2383 SvPVX ((SV *)av) = (char *)ary;
2384#endif
2385 AvMAX (av) = 1;
2386 AvFILLp (av) = 0;
2387 ary [0] = newSViv (count);
2388
2389 return newRV_noinc ((SV *)av);
2390}
2391
2392/* semaphore */
2393
2394static void
2395coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2396{
2397 SV *count_sv = AvARRAY (av)[0];
2398 IV count = SvIVX (count_sv);
2399
2400 count += adjust;
2401 SvIVX (count_sv) = count;
2402
2403 /* now wake up as many waiters as are expected to lock */
2404 while (count > 0 && AvFILLp (av) > 0)
2405 {
2406 SV *cb;
2407
2408 /* swap first two elements so we can shift a waiter */
2409 AvARRAY (av)[0] = AvARRAY (av)[1];
2410 AvARRAY (av)[1] = count_sv;
2411 cb = av_shift (av);
2412
2413 if (SvOBJECT (cb))
2414 {
2415 api_ready (aTHX_ cb);
2416 --count;
2417 }
2418 else if (SvTYPE (cb) == SVt_PVCV)
2419 {
2420 dSP;
2421 PUSHMARK (SP);
2422 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2423 PUTBACK;
2424 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2425 }
2426
2427 SvREFCNT_dec (cb);
2428 }
2429}
2430
2431static void
2432coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2433{
2434 /* call $sem->adjust (0) to possibly wake up some other waiters */
2435 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2436}
2437
2438static int
2439slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2440{
2441 AV *av = (AV *)frame->data;
2442 SV *count_sv = AvARRAY (av)[0];
2443
2444 /* if we are about to throw, don't actually acquire the lock, just throw */
2445 if (CORO_THROW)
2446 return 0;
2447 else if (SvIVX (count_sv) > 0)
2448 {
2449 SvSTATE_current->on_destroy = 0;
2450
2451 if (acquire)
2452 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2453 else
2454 coro_semaphore_adjust (aTHX_ av, 0);
2455
2456 return 0;
2457 }
2458 else
2459 {
2460 int i;
2461 /* if we were woken up but can't down, we look through the whole */
2462 /* waiters list and only add us if we aren't in there already */
2463 /* this avoids some degenerate memory usage cases */
2464
2465 for (i = 1; i <= AvFILLp (av); ++i)
2466 if (AvARRAY (av)[i] == SvRV (coro_current))
2467 return 1;
2468
2469 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2470 return 1;
2471 }
2472}
2473
2474static int
2475slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2476{
2477 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2478}
2479
2480static int
2481slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2482{
2483 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2484}
2485
2486static void
2487slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2488{
2489 AV *av = (AV *)SvRV (arg [0]);
2490
2491 if (SvIVX (AvARRAY (av)[0]) > 0)
2492 {
2493 frame->data = (void *)av;
2494 frame->prepare = prepare_nop;
2495 }
2496 else
2497 {
2498 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2499
2500 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2501 frame->prepare = prepare_schedule;
2502
2503 /* to avoid race conditions when a woken-up coro gets terminated */
2504 /* we arrange for a temporary on_destroy that calls adjust (0) */
2505 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2506 }
2507}
2508
2509static void
2510slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2511{
2512 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2513 frame->check = slf_check_semaphore_down;
2514}
2515
2516static void
2517slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 if (items >= 2)
2520 {
2521 /* callback form */
2522 AV *av = (AV *)SvRV (arg [0]);
2523 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2524
2525 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2526
2527 if (SvIVX (AvARRAY (av)[0]) > 0)
2528 coro_semaphore_adjust (aTHX_ av, 0);
2529
2530 frame->prepare = prepare_nop;
2531 frame->check = slf_check_nop;
2532 }
2533 else
2534 {
2535 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2536 frame->check = slf_check_semaphore_wait;
2537 }
2538}
2539
2540/* signal */
2541
2542static void
2543coro_signal_wake (pTHX_ AV *av, int count)
2544{
2545 SvIVX (AvARRAY (av)[0]) = 0;
2546
2547 /* now signal count waiters */
2548 while (count > 0 && AvFILLp (av) > 0)
2549 {
2550 SV *cb;
2551
2552 /* swap first two elements so we can shift a waiter */
2553 cb = AvARRAY (av)[0];
2554 AvARRAY (av)[0] = AvARRAY (av)[1];
2555 AvARRAY (av)[1] = cb;
2556
2557 cb = av_shift (av);
2558
2559 api_ready (aTHX_ cb);
2560 sv_setiv (cb, 0); /* signal waiter */
2561 SvREFCNT_dec (cb);
2562
2563 --count;
2564 }
2565}
2566
2567static int
2568slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2569{
2570 /* if we are about to throw, also stop waiting */
2571 return SvROK ((SV *)frame->data) && !CORO_THROW;
2572}
2573
2574static void
2575slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 AV *av = (AV *)SvRV (arg [0]);
2578
2579 if (SvIVX (AvARRAY (av)[0]))
2580 {
2581 SvIVX (AvARRAY (av)[0]) = 0;
2582 frame->prepare = prepare_nop;
2583 frame->check = slf_check_nop;
2584 }
2585 else
2586 {
2587 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2588
2589 av_push (av, waiter);
2590
2591 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2592 frame->prepare = prepare_schedule;
2593 frame->check = slf_check_signal_wait;
2594 }
2595}
2596
2597/*****************************************************************************/
2598/* Coro::AIO */
2599
2600#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2601
2602/* helper storage struct */
2603struct io_state
2604{
2605 int errorno;
2606 I32 laststype; /* U16 in 5.10.0 */
2607 int laststatval;
2608 Stat_t statcache;
2609};
2610
2611static void
2612coro_aio_callback (pTHX_ CV *cv)
2613{
2614 dXSARGS;
2615 AV *state = (AV *)GENSUB_ARG;
2616 SV *coro = av_pop (state);
2617 SV *data_sv = newSV (sizeof (struct io_state));
2618
2619 av_extend (state, items - 1);
2620
2621 sv_upgrade (data_sv, SVt_PV);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624
2625 {
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627
2628 data->errorno = errno;
2629 data->laststype = PL_laststype;
2630 data->laststatval = PL_laststatval;
2631 data->statcache = PL_statcache;
2632 }
2633
2634 /* now build the result vector out of all the parameters and the data_sv */
2635 {
2636 int i;
2637
2638 for (i = 0; i < items; ++i)
2639 av_push (state, SvREFCNT_inc_NN (ST (i)));
2640 }
2641
2642 av_push (state, data_sv);
2643
2644 api_ready (aTHX_ coro);
2645 SvREFCNT_dec (coro);
2646 SvREFCNT_dec ((AV *)state);
2647}
2648
2649static int
2650slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2651{
2652 AV *state = (AV *)frame->data;
2653
2654 /* if we are about to throw, return early */
2655 /* this does not cancel the aio request, but at least */
2656 /* it quickly returns */
2657 if (CORO_THROW)
2658 return 0;
2659
2660 /* one element that is an RV? repeat! */
2661 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2662 return 1;
2663
2664 /* restore status */
2665 {
2666 SV *data_sv = av_pop (state);
2667 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2668
2669 errno = data->errorno;
2670 PL_laststype = data->laststype;
2671 PL_laststatval = data->laststatval;
2672 PL_statcache = data->statcache;
2673
2674 SvREFCNT_dec (data_sv);
2675 }
2676
2677 /* push result values */
2678 {
1853 dSP; 2679 dSP;
2680 int i;
1854 2681
2682 EXTEND (SP, AvFILLp (state) + 1);
2683 for (i = 0; i <= AvFILLp (state); ++i)
2684 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2685
2686 PUTBACK;
2687 }
2688
2689 return 0;
2690}
2691
2692static void
2693slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2694{
2695 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2696 SV *coro_hv = SvRV (coro_current);
2697 struct coro *coro = SvSTATE_hv (coro_hv);
2698
2699 /* put our coroutine id on the state arg */
2700 av_push (state, SvREFCNT_inc_NN (coro_hv));
2701
2702 /* first see whether we have a non-zero priority and set it as AIO prio */
2703 if (coro->prio)
2704 {
2705 dSP;
2706
2707 static SV *prio_cv;
2708 static SV *prio_sv;
2709
2710 if (expect_false (!prio_cv))
2711 {
2712 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2713 prio_sv = newSViv (0);
2714 }
2715
2716 PUSHMARK (SP);
2717 sv_setiv (prio_sv, coro->prio);
2718 XPUSHs (prio_sv);
2719
2720 PUTBACK;
2721 call_sv (prio_cv, G_VOID | G_DISCARD);
2722 }
2723
2724 /* now call the original request */
2725 {
2726 dSP;
2727 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2728 int i;
2729
1855 PUSHMARK (SP); 2730 PUSHMARK (SP);
1856 2731
1857 EXTEND (SP, 3); 2732 /* first push all args to the stack */
1858 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2733 EXTEND (SP, items + 1);
1859 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1860 PUSHs ((SV *)CvGV (ssl_cv));
1861 2734
1862 RETURNOP (ssl_restore.op_first); 2735 for (i = 0; i < items; ++i)
1863} 2736 PUSHs (arg [i]);
1864 2737
1865#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2738 /* now push the callback closure */
2739 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2740
1867/* declare prototype */ 2741 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 */
1875static OP *
1876pp_set_stacklevel (pTHX)
1877{
1878 dSP;
1879 struct transfer_args ta;
1880 SV **arg = PL_stack_base + TOPMARK + 1;
1881 int items = SP - arg; /* args without function object */
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK; 2742 PUTBACK;
1900 switch (PL_op->op_private & OPpENTERSUB_SSL) 2743 call_sv ((SV *)req, G_VOID | G_DISCARD);
1901 {
1902 case 0:
1903 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1909
1910 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 prepare_cede_notself (aTHX_ &ta);
1923 break;
1924 } 2744 }
1925 2745
1926 TRANSFER (ta, 0); 2746 /* now that the requets is going, we loop toll we have a result */
1927 SPAGAIN; 2747 frame->data = (void *)state;
1928 2748 frame->prepare = prepare_schedule;
1929skip: 2749 frame->check = slf_check_aio_req;
1930 PUTBACK;
1931 SSL_TAIL;
1932 SPAGAIN;
1933 RETURN;
1934} 2750}
1935 2751
1936static void 2752static void
1937coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2753coro_aio_req_xs (pTHX_ CV *cv)
1938{ 2754{
1939 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2755 dXSARGS;
1940 2756
1941 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2757 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1942 ssl_cv = cv;
1943 2758
1944 /* we patch the op, and then re-run the whole call */ 2759 XSRETURN_EMPTY;
1945 /* we have to put some dummy argument on the stack for this to work */
1946 ssl_restore.op_next = (OP *)&ssl_restore;
1947 ssl_restore.op_type = OP_NULL;
1948 ssl_restore.op_ppaddr = pp_restore;
1949 ssl_restore.op_first = PL_op;
1950
1951 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1952 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1953
1954 PL_op->op_ppaddr = pp_set_stacklevel;
1955 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1956
1957 PL_op = (OP *)&ssl_restore;
1958} 2760}
2761
2762/*****************************************************************************/
2763
2764#if CORO_CLONE
2765# include "clone.c"
2766#endif
1959 2767
1960MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2768MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1961 2769
1962PROTOTYPES: DISABLE 2770PROTOTYPES: DISABLE
1963 2771
1964BOOT: 2772BOOT:
1965{ 2773{
1966#ifdef USE_ITHREADS 2774#ifdef USE_ITHREADS
1967 MUTEX_INIT (&coro_lock);
1968# if CORO_PTHREAD 2775# if CORO_PTHREAD
1969 coro_thx = PERL_GET_CONTEXT; 2776 coro_thx = PERL_GET_CONTEXT;
1970# endif 2777# endif
1971#endif 2778#endif
1972 BOOT_PAGESIZE; 2779 BOOT_PAGESIZE;
2780
2781 cctx_current = cctx_new_empty ();
1973 2782
1974 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2783 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1975 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2784 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1976 2785
1977 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2786 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1993 main_top_env = PL_top_env; 2802 main_top_env = PL_top_env;
1994 2803
1995 while (main_top_env->je_prev) 2804 while (main_top_env->je_prev)
1996 main_top_env = main_top_env->je_prev; 2805 main_top_env = main_top_env->je_prev;
1997 2806
2807 {
2808 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2809
2810 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2811 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2812
2813 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2814 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2815 }
2816
1998 coroapi.ver = CORO_API_VERSION; 2817 coroapi.ver = CORO_API_VERSION;
1999 coroapi.rev = CORO_API_REVISION; 2818 coroapi.rev = CORO_API_REVISION;
2819
2000 coroapi.transfer = api_transfer; 2820 coroapi.transfer = api_transfer;
2821
2822 coroapi.sv_state = SvSTATE_;
2823 coroapi.execute_slf = api_execute_slf;
2824 coroapi.prepare_nop = prepare_nop;
2825 coroapi.prepare_schedule = prepare_schedule;
2826 coroapi.prepare_cede = prepare_cede;
2827 coroapi.prepare_cede_notself = prepare_cede_notself;
2001 2828
2002 { 2829 {
2003 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2830 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2004 2831
2005 if (!svp) croak ("Time::HiRes is required"); 2832 if (!svp) croak ("Time::HiRes is required");
… …
2011 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2838 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2012} 2839}
2013 2840
2014SV * 2841SV *
2015new (char *klass, ...) 2842new (char *klass, ...)
2843 ALIAS:
2844 Coro::new = 1
2016 CODE: 2845 CODE:
2017{ 2846{
2018 struct coro *coro; 2847 struct coro *coro;
2019 MAGIC *mg; 2848 MAGIC *mg;
2020 HV *hv; 2849 HV *hv;
2850 CV *cb;
2021 int i; 2851 int i;
2852
2853 if (items > 1)
2854 {
2855 cb = coro_sv_2cv (aTHX_ ST (1));
2856
2857 if (!ix)
2858 {
2859 if (CvISXSUB (cb))
2860 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2861
2862 if (!CvROOT (cb))
2863 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2864 }
2865 }
2022 2866
2023 Newz (0, coro, 1, struct coro); 2867 Newz (0, coro, 1, struct coro);
2024 coro->args = newAV (); 2868 coro->args = newAV ();
2025 coro->flags = CF_NEW; 2869 coro->flags = CF_NEW;
2026 2870
… …
2031 coro->hv = hv = newHV (); 2875 coro->hv = hv = newHV ();
2032 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2876 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2033 mg->mg_flags |= MGf_DUP; 2877 mg->mg_flags |= MGf_DUP;
2034 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2878 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2035 2879
2880 if (items > 1)
2881 {
2036 av_extend (coro->args, items - 1); 2882 av_extend (coro->args, items - 1 + ix - 1);
2883
2884 if (ix)
2885 {
2886 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2887 cb = cv_coro_run;
2888 }
2889
2890 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2891
2037 for (i = 1; i < items; i++) 2892 for (i = 2; i < items; i++)
2038 av_push (coro->args, newSVsv (ST (i))); 2893 av_push (coro->args, newSVsv (ST (i)));
2894 }
2039} 2895}
2040 OUTPUT: 2896 OUTPUT:
2041 RETVAL 2897 RETVAL
2042 2898
2043void 2899void
2044_set_stacklevel (...) 2900transfer (...)
2045 ALIAS: 2901 PROTOTYPE: $$
2046 Coro::State::transfer = 1 2902 CODE:
2047 Coro::schedule = 2 2903 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2048 Coro::cede = 3
2049 Coro::cede_notself = 4
2050 CODE:
2051 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2052 2904
2053bool 2905bool
2054_destroy (SV *coro_sv) 2906_destroy (SV *coro_sv)
2055 CODE: 2907 CODE:
2056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2908 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2061_exit (int code) 2913_exit (int code)
2062 PROTOTYPE: $ 2914 PROTOTYPE: $
2063 CODE: 2915 CODE:
2064 _exit (code); 2916 _exit (code);
2065 2917
2918SV *
2919clone (Coro::State coro)
2920 CODE:
2921{
2922#if CORO_CLONE
2923 struct coro *ncoro = coro_clone (coro);
2924 MAGIC *mg;
2925 /* TODO: too much duplication */
2926 ncoro->hv = newHV ();
2927 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2928 mg->mg_flags |= MGf_DUP;
2929 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2930#else
2931 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2932#endif
2933}
2934 OUTPUT:
2935 RETVAL
2936
2066int 2937int
2067cctx_stacksize (int new_stacksize = 0) 2938cctx_stacksize (int new_stacksize = 0)
2939 PROTOTYPE: ;$
2068 CODE: 2940 CODE:
2069 RETVAL = cctx_stacksize; 2941 RETVAL = cctx_stacksize;
2070 if (new_stacksize) 2942 if (new_stacksize)
2071 { 2943 {
2072 cctx_stacksize = new_stacksize; 2944 cctx_stacksize = new_stacksize;
… …
2075 OUTPUT: 2947 OUTPUT:
2076 RETVAL 2948 RETVAL
2077 2949
2078int 2950int
2079cctx_max_idle (int max_idle = 0) 2951cctx_max_idle (int max_idle = 0)
2952 PROTOTYPE: ;$
2080 CODE: 2953 CODE:
2081 RETVAL = cctx_max_idle; 2954 RETVAL = cctx_max_idle;
2082 if (max_idle > 1) 2955 if (max_idle > 1)
2083 cctx_max_idle = max_idle; 2956 cctx_max_idle = max_idle;
2084 OUTPUT: 2957 OUTPUT:
2085 RETVAL 2958 RETVAL
2086 2959
2087int 2960int
2088cctx_count () 2961cctx_count ()
2962 PROTOTYPE:
2089 CODE: 2963 CODE:
2090 RETVAL = cctx_count; 2964 RETVAL = cctx_count;
2091 OUTPUT: 2965 OUTPUT:
2092 RETVAL 2966 RETVAL
2093 2967
2094int 2968int
2095cctx_idle () 2969cctx_idle ()
2970 PROTOTYPE:
2096 CODE: 2971 CODE:
2097 RETVAL = cctx_idle; 2972 RETVAL = cctx_idle;
2098 OUTPUT: 2973 OUTPUT:
2099 RETVAL 2974 RETVAL
2100 2975
2101void 2976void
2102list () 2977list ()
2978 PROTOTYPE:
2103 PPCODE: 2979 PPCODE:
2104{ 2980{
2105 struct coro *coro; 2981 struct coro *coro;
2106 for (coro = coro_first; coro; coro = coro->next) 2982 for (coro = coro_first; coro; coro = coro->next)
2107 if (coro->hv) 2983 if (coro->hv)
… …
2169 3045
2170void 3046void
2171throw (Coro::State self, SV *throw = &PL_sv_undef) 3047throw (Coro::State self, SV *throw = &PL_sv_undef)
2172 PROTOTYPE: $;$ 3048 PROTOTYPE: $;$
2173 CODE: 3049 CODE:
3050{
3051 struct coro *current = SvSTATE_current;
3052 SV **throwp = self == current ? &CORO_THROW : &self->except;
2174 SvREFCNT_dec (self->throw); 3053 SvREFCNT_dec (*throwp);
2175 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3054 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3055}
2176 3056
2177void 3057void
2178api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3058api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3059 PROTOTYPE: $;$
3060 C_ARGS: aTHX_ coro, flags
2179 3061
2180SV * 3062SV *
2181has_cctx (Coro::State coro) 3063has_cctx (Coro::State coro)
2182 PROTOTYPE: $ 3064 PROTOTYPE: $
2183 CODE: 3065 CODE:
2184 RETVAL = boolSV (!!coro->cctx); 3066 /* maybe manage the running flag differently */
3067 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2185 OUTPUT: 3068 OUTPUT:
2186 RETVAL 3069 RETVAL
2187 3070
2188int 3071int
2189is_traced (Coro::State coro) 3072is_traced (Coro::State coro)
… …
2207 OUTPUT: 3090 OUTPUT:
2208 RETVAL 3091 RETVAL
2209 3092
2210void 3093void
2211force_cctx () 3094force_cctx ()
3095 PROTOTYPE:
2212 CODE: 3096 CODE:
2213 struct coro *coro = SvSTATE (coro_current);
2214 coro->cctx->idle_sp = 0; 3097 cctx_current->idle_sp = 0;
2215 3098
2216void 3099void
2217swap_defsv (Coro::State self) 3100swap_defsv (Coro::State self)
2218 PROTOTYPE: $ 3101 PROTOTYPE: $
2219 ALIAS: 3102 ALIAS:
2220 swap_defav = 1 3103 swap_defav = 1
2221 CODE: 3104 CODE:
2222 if (!self->slot) 3105 if (!self->slot)
2223 croak ("cannot swap state with coroutine that has no saved state"); 3106 croak ("cannot swap state with coroutine that has no saved state,");
2224 else 3107 else
2225 { 3108 {
2226 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3109 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2227 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3110 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2228 3111
2229 SV *tmp = *src; *src = *dst; *dst = tmp; 3112 SV *tmp = *src; *src = *dst; *dst = tmp;
2230 } 3113 }
2231 3114
3115
2232MODULE = Coro::State PACKAGE = Coro 3116MODULE = Coro::State PACKAGE = Coro
2233 3117
2234BOOT: 3118BOOT:
2235{ 3119{
2236 int i; 3120 int i;
2237 3121
2238 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2239 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3122 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2240 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3123 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2241 3124 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3125 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2242 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3126 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2243 SvREADONLY_on (coro_current); 3127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3128 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3129 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3130 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3131
3132 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3133 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3134 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3135 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2244 3136
2245 coro_stash = gv_stashpv ("Coro", TRUE); 3137 coro_stash = gv_stashpv ("Coro", TRUE);
2246 3138
2247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3139 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3140 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2256 3148
2257 { 3149 {
2258 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3150 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2259 3151
2260 coroapi.schedule = api_schedule; 3152 coroapi.schedule = api_schedule;
3153 coroapi.schedule_to = api_schedule_to;
2261 coroapi.cede = api_cede; 3154 coroapi.cede = api_cede;
2262 coroapi.cede_notself = api_cede_notself; 3155 coroapi.cede_notself = api_cede_notself;
2263 coroapi.ready = api_ready; 3156 coroapi.ready = api_ready;
2264 coroapi.is_ready = api_is_ready; 3157 coroapi.is_ready = api_is_ready;
2265 coroapi.nready = &coro_nready; 3158 coroapi.nready = coro_nready;
2266 coroapi.current = coro_current; 3159 coroapi.current = coro_current;
2267 3160
2268 GCoroAPI = &coroapi; 3161 /*GCoroAPI = &coroapi;*/
2269 sv_setiv (sv, (IV)&coroapi); 3162 sv_setiv (sv, (IV)&coroapi);
2270 SvREADONLY_on (sv); 3163 SvREADONLY_on (sv);
2271 } 3164 }
2272} 3165}
3166
3167void
3168terminate (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3171
3172void
3173schedule (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3176
3177void
3178schedule_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3181
3182void
3183cede_to (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3186
3187void
3188cede (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_cede);
3191
3192void
3193cede_notself (...)
3194 CODE:
3195 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3196
3197void
3198_cancel (Coro::State self)
3199 CODE:
3200 coro_state_destroy (aTHX_ self);
3201 coro_call_on_destroy (aTHX_ self);
2273 3202
2274void 3203void
2275_set_current (SV *current) 3204_set_current (SV *current)
2276 PROTOTYPE: $ 3205 PROTOTYPE: $
2277 CODE: 3206 CODE:
… …
2280 3209
2281void 3210void
2282_set_readyhook (SV *hook) 3211_set_readyhook (SV *hook)
2283 PROTOTYPE: $ 3212 PROTOTYPE: $
2284 CODE: 3213 CODE:
2285 LOCK;
2286 SvREFCNT_dec (coro_readyhook); 3214 SvREFCNT_dec (coro_readyhook);
2287 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3215 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2288 UNLOCK;
2289 3216
2290int 3217int
2291prio (Coro::State coro, int newprio = 0) 3218prio (Coro::State coro, int newprio = 0)
3219 PROTOTYPE: $;$
2292 ALIAS: 3220 ALIAS:
2293 nice = 1 3221 nice = 1
2294 CODE: 3222 CODE:
2295{ 3223{
2296 RETVAL = coro->prio; 3224 RETVAL = coro->prio;
… …
2311 3239
2312SV * 3240SV *
2313ready (SV *self) 3241ready (SV *self)
2314 PROTOTYPE: $ 3242 PROTOTYPE: $
2315 CODE: 3243 CODE:
2316 RETVAL = boolSV (api_ready (self)); 3244 RETVAL = boolSV (api_ready (aTHX_ self));
2317 OUTPUT: 3245 OUTPUT:
2318 RETVAL 3246 RETVAL
2319 3247
2320int 3248int
2321nready (...) 3249nready (...)
… …
2323 CODE: 3251 CODE:
2324 RETVAL = coro_nready; 3252 RETVAL = coro_nready;
2325 OUTPUT: 3253 OUTPUT:
2326 RETVAL 3254 RETVAL
2327 3255
2328# for async_pool speedup
2329void 3256void
2330_pool_1 (SV *cb) 3257_pool_handler (...)
2331 CODE: 3258 CODE:
2332{ 3259 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2333 struct coro *coro = SvSTATE (coro_current);
2334 HV *hv = (HV *)SvRV (coro_current);
2335 AV *defav = GvAV (PL_defgv);
2336 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2337 AV *invoke_av;
2338 int i, len;
2339 3260
2340 if (!invoke) 3261void
3262async_pool (SV *cv, ...)
3263 PROTOTYPE: &@
3264 PPCODE:
3265{
3266 HV *hv = (HV *)av_pop (av_async_pool);
3267 AV *av = newAV ();
3268 SV *cb = ST (0);
3269 int i;
3270
3271 av_extend (av, items - 2);
3272 for (i = 1; i < items; ++i)
3273 av_push (av, SvREFCNT_inc_NN (ST (i)));
3274
3275 if ((SV *)hv == &PL_sv_undef)
2341 { 3276 {
2342 SV *old = PL_diehook; 3277 PUSHMARK (SP);
2343 PL_diehook = 0; 3278 EXTEND (SP, 2);
2344 SvREFCNT_dec (old); 3279 PUSHs (sv_Coro);
2345 croak ("\3async_pool terminate\2\n"); 3280 PUSHs ((SV *)cv_pool_handler);
3281 PUTBACK;
3282 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3283 SPAGAIN;
3284
3285 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2346 } 3286 }
2347 3287
2348 SvREFCNT_dec (coro->saved_deffh);
2349 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2350
2351 hv_store (hv, "desc", sizeof ("desc") - 1,
2352 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2353
2354 invoke_av = (AV *)SvRV (invoke);
2355 len = av_len (invoke_av);
2356
2357 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2358
2359 if (len > 0)
2360 { 3288 {
2361 av_fill (defav, len - 1); 3289 struct coro *coro = SvSTATE_hv (hv);
2362 for (i = 0; i < len; ++i) 3290
2363 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3291 assert (!coro->invoke_cb);
3292 assert (!coro->invoke_av);
3293 coro->invoke_cb = SvREFCNT_inc (cb);
3294 coro->invoke_av = av;
2364 } 3295 }
2365 3296
3297 api_ready (aTHX_ (SV *)hv);
3298
3299 if (GIMME_V != G_VOID)
3300 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3301 else
2366 SvREFCNT_dec (invoke); 3302 SvREFCNT_dec (hv);
2367} 3303}
2368 3304
2369void 3305SV *
2370_pool_2 (SV *cb) 3306rouse_cb ()
3307 PROTOTYPE:
2371 CODE: 3308 CODE:
2372{ 3309 RETVAL = coro_new_rouse_cb (aTHX);
2373 struct coro *coro = SvSTATE (coro_current);
2374
2375 sv_setsv (cb, &PL_sv_undef);
2376
2377 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2378 coro->saved_deffh = 0;
2379
2380 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2381 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2382 {
2383 SV *old = PL_diehook;
2384 PL_diehook = 0;
2385 SvREFCNT_dec (old);
2386 croak ("\3async_pool terminate\2\n");
2387 }
2388
2389 av_clear (GvAV (PL_defgv));
2390 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2391 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2392
2393 coro->prio = 0;
2394
2395 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2396 api_trace (coro_current, 0);
2397
2398 av_push (av_async_pool, newSVsv (coro_current));
2399}
2400
2401#if 0
2402
2403void
2404_generator_call (...)
2405 PROTOTYPE: @
2406 PPCODE:
2407 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2408 xxxx
2409 abort ();
2410
2411SV *
2412gensub (SV *sub, ...)
2413 PROTOTYPE: &;@
2414 CODE:
2415{
2416 struct coro *coro;
2417 MAGIC *mg;
2418 CV *xcv;
2419 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2420 int i;
2421
2422 CvGV (ncv) = CvGV (cv);
2423 CvFILE (ncv) = CvFILE (cv);
2424
2425 Newz (0, coro, 1, struct coro);
2426 coro->args = newAV ();
2427 coro->flags = CF_NEW;
2428
2429 av_extend (coro->args, items - 1);
2430 for (i = 1; i < items; i++)
2431 av_push (coro->args, newSVsv (ST (i)));
2432
2433 CvISXSUB_on (ncv);
2434 CvXSUBANY (ncv).any_ptr = (void *)coro;
2435
2436 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2437
2438 CvXSUB (ncv) = CvXSUB (xcv);
2439 CvANON_on (ncv);
2440
2441 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2442 RETVAL = newRV_noinc ((SV *)ncv);
2443}
2444 OUTPUT: 3310 OUTPUT:
2445 RETVAL 3311 RETVAL
2446 3312
2447#endif
2448
2449
2450MODULE = Coro::State PACKAGE = Coro::AIO
2451
2452void 3313void
2453_get_state (SV *self) 3314rouse_wait (...)
3315 PROTOTYPE: ;$
2454 PPCODE: 3316 PPCODE:
2455{ 3317 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2456 AV *defav = GvAV (PL_defgv);
2457 AV *av = newAV ();
2458 int i;
2459 SV *data_sv = newSV (sizeof (struct io_state));
2460 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2461 SvCUR_set (data_sv, sizeof (struct io_state));
2462 SvPOK_only (data_sv);
2463 3318
2464 data->errorno = errno;
2465 data->laststype = PL_laststype;
2466 data->laststatval = PL_laststatval;
2467 data->statcache = PL_statcache;
2468 3319
2469 av_extend (av, AvFILLp (defav) + 1 + 1); 3320MODULE = Coro::State PACKAGE = PerlIO::cede
2470 3321
2471 for (i = 0; i <= AvFILLp (defav); ++i) 3322BOOT:
2472 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2473 3324
2474 av_push (av, data_sv);
2475 3325
2476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3326MODULE = Coro::State PACKAGE = Coro::Semaphore
2477 3327
2478 api_ready (self); 3328SV *
2479} 3329new (SV *klass, SV *count = 0)
3330 CODE:
3331 RETVAL = sv_bless (
3332 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3333 GvSTASH (CvGV (cv))
3334 );
3335 OUTPUT:
3336 RETVAL
3337
3338# helper for Coro::Channel
3339SV *
3340_alloc (int count)
3341 CODE:
3342 RETVAL = coro_waitarray_new (aTHX_ count);
3343 OUTPUT:
3344 RETVAL
3345
3346SV *
3347count (SV *self)
3348 CODE:
3349 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3350 OUTPUT:
3351 RETVAL
2480 3352
2481void 3353void
2482_set_state (SV *state) 3354up (SV *self, int adjust = 1)
2483 PROTOTYPE: $ 3355 ALIAS:
3356 adjust = 1
3357 CODE:
3358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3359
3360void
3361down (...)
3362 CODE:
3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3364
3365void
3366wait (...)
3367 CODE:
3368 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3369
3370void
3371try (SV *self)
3372 PPCODE:
3373{
3374 AV *av = (AV *)SvRV (self);
3375 SV *count_sv = AvARRAY (av)[0];
3376 IV count = SvIVX (count_sv);
3377
3378 if (count > 0)
3379 {
3380 --count;
3381 SvIVX (count_sv) = count;
3382 XSRETURN_YES;
3383 }
3384 else
3385 XSRETURN_NO;
3386}
3387
3388void
3389waiters (SV *self)
3390 PPCODE:
3391{
3392 AV *av = (AV *)SvRV (self);
3393 int wcount = AvFILLp (av) + 1 - 1;
3394
3395 if (GIMME_V == G_SCALAR)
3396 XPUSHs (sv_2mortal (newSViv (wcount)));
3397 else
3398 {
3399 int i;
3400 EXTEND (SP, wcount);
3401 for (i = 1; i <= wcount; ++i)
3402 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3403 }
3404}
3405
3406MODULE = Coro::State PACKAGE = Coro::Signal
3407
3408SV *
3409new (SV *klass)
2484 PPCODE: 3410 CODE:
3411 RETVAL = sv_bless (
3412 coro_waitarray_new (aTHX_ 0),
3413 GvSTASH (CvGV (cv))
3414 );
3415 OUTPUT:
3416 RETVAL
3417
3418void
3419wait (...)
3420 CODE:
3421 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3422
3423void
3424broadcast (SV *self)
3425 CODE:
2485{ 3426{
2486 AV *av = (AV *)SvRV (state); 3427 AV *av = (AV *)SvRV (self);
2487 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3428 coro_signal_wake (aTHX_ av, AvFILLp (av));
2488 int i; 3429}
2489 3430
2490 errno = data->errorno; 3431void
2491 PL_laststype = data->laststype; 3432send (SV *self)
2492 PL_laststatval = data->laststatval; 3433 CODE:
2493 PL_statcache = data->statcache; 3434{
3435 AV *av = (AV *)SvRV (self);
2494 3436
2495 EXTEND (SP, AvFILLp (av)); 3437 if (AvFILLp (av))
2496 for (i = 0; i < AvFILLp (av); ++i) 3438 coro_signal_wake (aTHX_ av, 1);
2497 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3439 else
3440 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2498} 3441}
3442
3443IV
3444awaited (SV *self)
3445 CODE:
3446 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3447 OUTPUT:
3448 RETVAL
2499 3449
2500 3450
2501MODULE = Coro::State PACKAGE = Coro::AnyEvent 3451MODULE = Coro::State PACKAGE = Coro::AnyEvent
2502 3452
2503BOOT: 3453BOOT:
2504 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3454 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2505 3455
2506SV * 3456void
2507_schedule (...) 3457_schedule (...)
2508 PROTOTYPE: @
2509 CODE: 3458 CODE:
2510{ 3459{
2511 static int incede; 3460 static int incede;
2512 3461
2513 api_cede_notself (); 3462 api_cede_notself (aTHX);
2514 3463
2515 ++incede; 3464 ++incede;
2516 while (coro_nready >= incede && api_cede ()) 3465 while (coro_nready >= incede && api_cede (aTHX))
2517 ; 3466 ;
2518 3467
2519 sv_setsv (sv_activity, &PL_sv_undef); 3468 sv_setsv (sv_activity, &PL_sv_undef);
2520 if (coro_nready >= incede) 3469 if (coro_nready >= incede)
2521 { 3470 {
2522 PUSHMARK (SP); 3471 PUSHMARK (SP);
2523 PUTBACK; 3472 PUTBACK;
2524 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3473 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2525 SPAGAIN;
2526 } 3474 }
2527 3475
2528 --incede; 3476 --incede;
2529} 3477}
2530 3478
2531 3479
2532MODULE = Coro::State PACKAGE = PerlIO::cede 3480MODULE = Coro::State PACKAGE = Coro::AIO
2533 3481
2534BOOT: 3482void
2535 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3483_register (char *target, char *proto, SV *req)
3484 CODE:
3485{
3486 CV *req_cv = coro_sv_2cv (aTHX_ req);
3487 /* newXSproto doesn't return the CV on 5.8 */
3488 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3489 sv_setpv ((SV *)slf_cv, proto);
3490 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3491}
2536 3492

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