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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.338 by root, Sun Dec 7 15:33:21 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
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
339static AV * 412static AV *
340coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
341{ 414{
342 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
344 417
345 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 424#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 426 --AvFILLp (padlist);
354 427
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
357 430
358 return newpadlist; 431 return newpadlist;
359} 432}
360 433
361static void 434static void
362free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
363{ 436{
364 /* may be during global destruction */ 437 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
366 { 439 {
367 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
368 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
369 { 443 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
371 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 446 I32 j = AvFILLp (av);
373 SV *sv; 447
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 453 }
380 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
382 } 459 }
383} 460}
384 461
385static int 462static int
… …
394 471
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 473
397 return 0; 474 return 0;
398} 475}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 476
403static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 478 0, 0, 0, 0,
405 coro_cv_free 479 coro_cv_free
406}; 480};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#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)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 481
444/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
445static void 483static void
446get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
447{ 485{
… …
453 else 491 else
454 { 492 {
455#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
462#else 500#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 502#endif
465 } 503 }
466} 504}
467 505
468static void 506static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 514
477 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
478 516
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
481 519
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 521}
484 522
485/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
490 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
491 c->slot = 0; 529 c->slot = 0;
492 530
493 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
494 532
495 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
499 538
500 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 540 # include "state.h"
502 #undef VAR 541 #undef VAR
503 542
… …
514 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
515 } 554 }
516 555
517 PUTBACK; 556 PUTBACK;
518 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
519} 561}
520 562
521static void 563static void
522save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
523{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
524 { 569 {
525 dSP; 570 dSP;
526 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
583 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
584 629
585 { 630 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 632
588 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
592 638
593 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 640 # include "state.h"
595 #undef VAR 641 #undef VAR
596 } 642 }
597} 643}
598 644
599/* 645/*
600 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
604 */ 650 */
605#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
607#else 653#else
608static void 654static void
609coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
610{ 656{
611 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 721 Safefree (PL_retstack);
676#endif 722#endif
677} 723}
678 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
679static size_t 734static size_t
680coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
681{ 736{
682 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
683 738
684 if (coro->mainstack) 739 if (coro->mainstack)
685 { 740 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
690 { 742 {
691 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
692 744 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 745 #undef SYM
696 } 746 }
697 else 747 else
698 slot = coro->slot;
699
700 if (slot)
701 { 748 {
702 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #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 } 752 }
714 } 753 }
715 754
716 return rss; 755 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_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} 756}
745 757
746/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
747 759
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 769#endif
758 770
759/* 771/*
760 * This overrides the default magic get method of %SIG elements. 772 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 773 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 774 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 775 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 776 */
768static int 777static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 778coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 779{
771 const char *s = MgPV_nolen_const (mg); 780 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 834
826 if (svp) 835 if (svp)
827 { 836 {
828 SV *old = *svp; 837 SV *old = *svp;
829 *svp = newSVsv (sv); 838 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 839 SvREFCNT_dec (old);
831 return 0; 840 return 0;
832 } 841 }
833 } 842 }
834 843
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 844 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 845}
837 846
838static void 847static void
848prepare_nop (pTHX_ struct coro_transfer_args *ta)
849{
850 /* kind of mega-hacky, but works */
851 ta->next = ta->prev = (struct coro *)ta;
852}
853
854static int
855slf_check_nop (pTHX_ struct CoroSLF *frame)
856{
857 return 0;
858}
859
860static int
861slf_check_repeat (pTHX_ struct CoroSLF *frame)
862{
863 return 1;
864}
865
866static UNOP coro_setup_op;
867
868static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 869coro_setup (pTHX_ struct coro *coro)
840{ 870{
841 /* 871 /*
842 * emulate part of the perl startup here. 872 * emulate part of the perl startup here.
843 */ 873 */
… …
845 875
846 PL_runops = RUNOPS_DEFAULT; 876 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 877 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 878 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 879 PL_comppad = 0;
880 PL_comppad_name = 0;
881 PL_comppad_name_fill = 0;
882 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 883 PL_curpm = 0;
851 PL_curpad = 0; 884 PL_curpad = 0;
852 PL_localizing = 0; 885 PL_localizing = 0;
853 PL_dirty = 0; 886 PL_dirty = 0;
854 PL_restartop = 0; 887 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 888#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 889 PL_parser = 0;
857#endif 890#endif
891 PL_hints = 0;
858 892
859 /* recreate the die/warn hooks */ 893 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 894 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); 895 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 896
863 GvSV (PL_defgv) = newSV (0); 897 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 898 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 899 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 900 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
901 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 902 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 903 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 904
870 { 905 {
871 dSP; 906 dSP;
872 UNOP myop; 907 UNOP myop;
873 908
874 Zero (&myop, 1, UNOP); 909 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 910 myop.op_next = Nullop;
911 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 912 myop.op_flags = OPf_WANT_VOID;
877 913
878 PUSHMARK (SP); 914 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 915 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 916 PUTBACK;
881 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 919 }
885 920
886 /* this newly created coroutine might be run on an existing cctx which most 921 /* 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, 922 * 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 */ 923 */
890 SLF_HEAD; 924 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 925 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 926
927 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
928 coro_setup_op.op_next = PL_op;
929 coro_setup_op.op_type = OP_ENTERSUB;
930 coro_setup_op.op_ppaddr = pp_slf;
931 /* no flags etc. required, as an init function won't be called */
932
933 PL_op = (OP *)&coro_setup_op;
934
935 /* copy throw, in case it was set before coro_setup */
936 CORO_THROW = coro->except;
937}
938
893static void 939static void
894coro_destruct (pTHX_ struct coro *coro) 940coro_unwind_stacks (pTHX)
895{ 941{
896 if (!IN_DESTRUCT) 942 if (!IN_DESTRUCT)
897 { 943 {
898 /* restore all saved variables and stuff */ 944 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 945 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 953 POPSTACK_TO (PL_mainstack);
908 954
909 /* unwind main stack */ 955 /* unwind main stack */
910 dounwind (-1); 956 dounwind (-1);
911 } 957 }
958}
959
960static void
961coro_destruct_perl (pTHX_ struct coro *coro)
962{
963 coro_unwind_stacks (aTHX);
912 964
913 SvREFCNT_dec (GvSV (PL_defgv)); 965 SvREFCNT_dec (GvSV (PL_defgv));
914 SvREFCNT_dec (GvAV (PL_defgv)); 966 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv)); 967 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv); 968 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs); 969 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv)); 970 SvREFCNT_dec (GvSV (irsgv));
971 SvREFCNT_dec (GvHV (PL_hintgv));
919 972
920 SvREFCNT_dec (PL_diehook); 973 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 974 SvREFCNT_dec (PL_warnhook);
922 975
923 SvREFCNT_dec (coro->saved_deffh); 976 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 977 SvREFCNT_dec (coro->rouse_cb);
978 SvREFCNT_dec (coro->invoke_cb);
979 SvREFCNT_dec (coro->invoke_av);
925 980
926 coro_destruct_stacks (aTHX); 981 coro_destruct_stacks (aTHX);
927} 982}
928 983
929INLINE void 984INLINE void
… …
939static int 994static int
940runops_trace (pTHX) 995runops_trace (pTHX)
941{ 996{
942 COP *oldcop = 0; 997 COP *oldcop = 0;
943 int oldcxix = -2; 998 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 999
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1000 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1001 {
949 PERL_ASYNC_CHECK (); 1002 PERL_ASYNC_CHECK ();
950 1003
951 if (cctx->flags & CC_TRACE_ALL) 1004 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1005 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1006 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1007 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1008 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1009 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1010 AV *av = newAV (); /* return values */
958 SV **cb; 1011 SV **cb;
… …
995 1048
996 if (PL_curcop != &PL_compiling) 1049 if (PL_curcop != &PL_compiling)
997 { 1050 {
998 SV **cb; 1051 SV **cb;
999 1052
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1053 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1054 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1055 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1056
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1057 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1058 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1059 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1060 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1061 SV *fullname = sv_2mortal (newSV (0));
1010 1062
1011 if (isGV (gv)) 1063 if (isGV (gv))
… …
1016 SAVETMPS; 1068 SAVETMPS;
1017 EXTEND (SP, 3); 1069 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1070 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1071 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1072 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1073 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1074 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1075 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); 1076 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1077 SPAGAIN;
1026 FREETMPS; 1078 FREETMPS;
… …
1029 } 1081 }
1030 1082
1031 oldcxix = cxstack_ix; 1083 oldcxix = cxstack_ix;
1032 } 1084 }
1033 1085
1034 if (cctx->flags & CC_TRACE_LINE) 1086 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1087 {
1036 dSP; 1088 dSP;
1037 1089
1038 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1091 ENTER;
… …
1058 1110
1059 TAINT_NOT; 1111 TAINT_NOT;
1060 return 0; 1112 return 0;
1061} 1113}
1062 1114
1115static struct CoroSLF cctx_ssl_frame;
1116
1063static void 1117static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1118slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1119{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1120 ta->prev = 0;
1068} 1121}
1069 1122
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1123static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1124slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1125{
1073/* also initialises PL_top_env */ 1126 *frame = cctx_ssl_frame;
1127
1128 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1129}
1130
1131/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1132static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1133cctx_prepare (pTHX)
1076{ 1134{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1135 PL_top_env = &PL_start_env;
1081 1136
1082 if (cctx->flags & CC_TRACE) 1137 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1138 PL_runops = runops_trace;
1084 1139
1085 Zero (&myop, 1, UNOP); 1140 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1141 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1142 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1143 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1144
1089 PUSHMARK (SP); 1145 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1146 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1147
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1148 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1149 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1150}
1098 1151
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1152/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1153INLINE void
1101transfer_tail (pTHX) 1154transfer_tail (pTHX)
1102{ 1155{
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); 1156 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} 1157}
1119 1158
1120/* 1159/*
1121 * this is a _very_ stripped down perl interpreter ;) 1160 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1161 */
… …
1129# endif 1168# endif
1130#endif 1169#endif
1131 { 1170 {
1132 dTHX; 1171 dTHX;
1133 1172
1134 /* we are the alternative tail to pp_set_stacklevel */ 1173 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1174 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1175 /* PL_nop = PL_nop->op_next */
1140 1176
1141 /* inject a fake subroutine call to cctx_init */ 1177 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1178 cctx_prepare (aTHX);
1143 1179
1144 /* cctx_run is the alternative tail of transfer() */ 1180 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1181 transfer_tail (aTHX);
1146 1182
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1183 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1184 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1185 perl_run (PL_curinterp);
1186 /*
1187 * Unfortunately, there is no way to get at the return values of the
1188 * coro body here, as perl_run destroys these
1189 */
1150 1190
1151 /* 1191 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1192 * 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) 1193 * 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 1194 * 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" 1195 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1196 * coroutine as Coro has no such concept.
1197 * This actually isn't valid with the pthread backend, but OSes requiring
1198 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1199 */
1158 PL_top_env = main_top_env; 1200 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1201 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1202 }
1161} 1203}
… …
1238cctx_destroy (coro_cctx *cctx) 1280cctx_destroy (coro_cctx *cctx)
1239{ 1281{
1240 if (!cctx) 1282 if (!cctx)
1241 return; 1283 return;
1242 1284
1285 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1286
1243 --cctx_count; 1287 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1288 coro_destroy (&cctx->cctx);
1245 1289
1246 /* coro_transfer creates new, empty cctx's */ 1290 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1291 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1349/** coroutine switching *****************************************************/
1306 1350
1307static void 1351static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1352transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1353{
1354 /* TODO: throwing up here is considered harmful */
1355
1310 if (expect_true (prev != next)) 1356 if (expect_true (prev != next))
1311 { 1357 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1358 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"); 1359 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1360
1315 if (expect_false (next->flags & CF_RUNNING)) 1361 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"); 1362 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1363
1318 if (expect_false (next->flags & CF_DESTROYED)) 1364 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"); 1365 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1366
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1367#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1368 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"); 1369 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1370#endif
1325 } 1371 }
1326} 1372}
1327 1373
1328/* always use the TRANSFER macro */ 1374/* always use the TRANSFER macro */
1329static void NOINLINE 1375static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1376transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1377{
1332 dSTACKLEVEL; 1378 dSTACKLEVEL;
1333 1379
1334 /* sometimes transfer is only called to set idle_sp */ 1380 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1381 if (expect_false (!prev))
1336 { 1382 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1383 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1384 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1385 }
1340 else if (expect_true (prev != next)) 1386 else if (expect_true (prev != next))
1341 { 1387 {
1342 coro_cctx *prev__cctx; 1388 coro_cctx *cctx_prev;
1343 1389
1344 if (expect_false (prev->flags & CF_NEW)) 1390 if (expect_false (prev->flags & CF_NEW))
1345 { 1391 {
1346 /* create a new empty/source context */ 1392 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1393 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1394 prev->flags |= CF_RUNNING;
1350 } 1395 }
1351 1396
1352 prev->flags &= ~CF_RUNNING; 1397 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1398 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1399
1357 /* first get rid of the old state */ 1400 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1401 save_perl (aTHX_ prev);
1359 1402
1360 if (expect_false (next->flags & CF_NEW)) 1403 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1408 coro_setup (aTHX_ next);
1366 } 1409 }
1367 else 1410 else
1368 load_perl (aTHX_ next); 1411 load_perl (aTHX_ next);
1369 1412
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1413 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1414 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1415 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1416 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1417 && !force_cctx
1377 )) 1418 ))
1378 { 1419 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1420 /* 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)); 1421 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1422
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 */ 1423 /* 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 */ 1424 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1425 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1426 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1427 next->cctx = cctx_get (aTHX);
1389 1428
1390 cctx_put (prev__cctx); 1429 cctx_put (cctx_current);
1391 } 1430 }
1431 else
1432 prev->cctx = cctx_current;
1392 1433
1393 ++next->usecount; 1434 ++next->usecount;
1394 1435
1395 if (expect_true (!next->cctx)) 1436 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1437 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1438
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1439 next->cctx = 0;
1399 transfer_next = next;
1400 1440
1401 if (expect_false (prev__cctx != next->cctx)) 1441 if (expect_false (cctx_prev != cctx_current))
1402 { 1442 {
1403 prev__cctx->top_env = PL_top_env; 1443 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1444 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1445 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1446 }
1407 1447
1408 transfer_tail (aTHX); 1448 transfer_tail (aTHX);
1409 } 1449 }
1410} 1450}
… …
1417static int 1457static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1458coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1459{
1420 if (coro->flags & CF_DESTROYED) 1460 if (coro->flags & CF_DESTROYED)
1421 return 0; 1461 return 0;
1462
1463 if (coro->on_destroy)
1464 coro->on_destroy (aTHX_ coro);
1422 1465
1423 coro->flags |= CF_DESTROYED; 1466 coro->flags |= CF_DESTROYED;
1424 1467
1425 if (coro->flags & CF_READY) 1468 if (coro->flags & CF_READY)
1426 { 1469 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1470 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1471 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1472 --coro_nready;
1431 UNLOCK;
1432 } 1473 }
1433 else 1474 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1475 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1476
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1477 if (coro->mainstack
1478 && coro->mainstack != main_mainstack
1479 && coro->slot
1480 && !PL_dirty)
1437 { 1481 {
1438 struct coro temp; 1482 struct coro temp;
1439 1483
1440 if (coro->flags & CF_RUNNING) 1484 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1485
1443 save_perl (aTHX_ &temp); 1486 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1487 load_perl (aTHX_ coro);
1445 1488
1446 coro_destruct (aTHX_ coro); 1489 coro_destruct_perl (aTHX_ coro);
1447 1490
1448 load_perl (aTHX_ &temp); 1491 load_perl (aTHX_ &temp);
1449 1492
1450 coro->slot = 0; 1493 coro->slot = 0;
1451 } 1494 }
1452 1495
1453 cctx_destroy (coro->cctx); 1496 cctx_destroy (coro->cctx);
1497 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1498 SvREFCNT_dec (coro->args);
1499 SvREFCNT_dec (CORO_THROW);
1455 1500
1456 if (coro->next) coro->next->prev = coro->prev; 1501 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1502 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1503 if (coro == coro_first) coro_first = coro->next;
1459 1504
… …
1497# define MGf_DUP 0 1542# define MGf_DUP 0
1498#endif 1543#endif
1499}; 1544};
1500 1545
1501static void 1546static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1547prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1548{
1504 ta->prev = SvSTATE (prev_sv); 1549 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1550 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1551 TRANSFER_CHECK (*ta);
1507} 1552}
1508 1553
1509static void 1554static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1555api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1556{
1512 dTHX;
1513 struct transfer_args ta; 1557 struct coro_transfer_args ta;
1514 1558
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1559 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1560 TRANSFER (ta, 1);
1517} 1561}
1518 1562
1563/*****************************************************************************/
1564/* gensub: simple closure generation utility */
1565
1566#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1567
1568/* create a closure from XS, returns a code reference */
1569/* the arg can be accessed via GENSUB_ARG from the callback */
1570/* the callback must use dXSARGS/XSRETURN */
1571static SV *
1572gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1573{
1574 CV *cv = (CV *)newSV (0);
1575
1576 sv_upgrade ((SV *)cv, SVt_PVCV);
1577
1578 CvANON_on (cv);
1579 CvISXSUB_on (cv);
1580 CvXSUB (cv) = xsub;
1581 GENSUB_ARG = arg;
1582
1583 return newRV_noinc ((SV *)cv);
1584}
1585
1519/** Coro ********************************************************************/ 1586/** Coro ********************************************************************/
1520 1587
1521static void 1588INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1589coro_enq (pTHX_ struct coro *coro)
1523{ 1590{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1591 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1525} 1592}
1526 1593
1527static SV * 1594INLINE SV *
1528coro_deq (pTHX) 1595coro_deq (pTHX)
1529{ 1596{
1530 int prio; 1597 int prio;
1531 1598
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1599 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1535 1602
1536 return 0; 1603 return 0;
1537} 1604}
1538 1605
1539static int 1606static int
1540api_ready (SV *coro_sv) 1607api_ready (pTHX_ SV *coro_sv)
1541{ 1608{
1542 dTHX;
1543 struct coro *coro; 1609 struct coro *coro;
1544 SV *sv_hook; 1610 SV *sv_hook;
1545 void (*xs_hook)(void); 1611 void (*xs_hook)(void);
1546 1612
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1613 coro = SvSTATE (coro_sv);
1551 1614
1552 if (coro->flags & CF_READY) 1615 if (coro->flags & CF_READY)
1553 return 0; 1616 return 0;
1554 1617
1555 coro->flags |= CF_READY; 1618 coro->flags |= CF_READY;
1556 1619
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1620 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1621 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1622
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1623 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1624 ++coro_nready;
1564 1625
1565 UNLOCK;
1566
1567 if (sv_hook) 1626 if (sv_hook)
1568 { 1627 {
1569 dSP; 1628 dSP;
1570 1629
1571 ENTER; 1630 ENTER;
1572 SAVETMPS; 1631 SAVETMPS;
1573 1632
1574 PUSHMARK (SP); 1633 PUSHMARK (SP);
1575 PUTBACK; 1634 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1635 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1636
1579 FREETMPS; 1637 FREETMPS;
1580 LEAVE; 1638 LEAVE;
1581 } 1639 }
1582 1640
… …
1585 1643
1586 return 1; 1644 return 1;
1587} 1645}
1588 1646
1589static int 1647static int
1590api_is_ready (SV *coro_sv) 1648api_is_ready (pTHX_ SV *coro_sv)
1591{ 1649{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1650 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1651}
1596 1652
1653/* expects to own a reference to next->hv */
1597INLINE void 1654INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1655prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1656{
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); 1657 SV *prev_sv = SvRV (coro_current);
1658
1644 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1660 ta->next = next;
1661
1645 TRANSFER_CHECK (*ta); 1662 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1663
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1664 SvRV_set (coro_current, (SV *)next->hv);
1649 1665
1650 LOCK;
1651 free_coro_mortal (aTHX); 1666 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1667 coro_mortal = prev_sv;
1653 UNLOCK; 1668}
1669
1670static void
1671prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1672{
1673 for (;;)
1674 {
1675 SV *next_sv = coro_deq (aTHX);
1676
1677 if (expect_true (next_sv))
1678 {
1679 struct coro *next = SvSTATE_hv (next_sv);
1680
1681 /* cannot transfer to destroyed coros, skip and look for next */
1682 if (expect_false (next->flags & CF_DESTROYED))
1683 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1684 else
1685 {
1686 next->flags &= ~CF_READY;
1687 --coro_nready;
1688
1689 prepare_schedule_to (aTHX_ ta, next);
1690 break;
1691 }
1692 }
1693 else
1694 {
1695 /* nothing to schedule: call the idle handler */
1696 if (SvROK (sv_idle)
1697 && SvOBJECT (SvRV (sv_idle)))
1698 {
1699 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1700 api_ready (aTHX_ SvRV (sv_idle));
1701 --coro_nready;
1702 }
1703 else
1704 {
1705 dSP;
1706
1707 ENTER;
1708 SAVETMPS;
1709
1710 PUSHMARK (SP);
1711 PUTBACK;
1712 call_sv (sv_idle, G_VOID | G_DISCARD);
1713
1714 FREETMPS;
1715 LEAVE;
1716 }
1717 }
1718 }
1654} 1719}
1655 1720
1656INLINE void 1721INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1722prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1723{
1659 api_ready (coro_current); 1724 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1725 prepare_schedule (aTHX_ ta);
1661} 1726}
1662 1727
1663static void 1728INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1730{
1666 SV *prev = SvRV (coro_current); 1731 SV *prev = SvRV (coro_current);
1667 1732
1668 if (coro_nready) 1733 if (coro_nready)
1669 { 1734 {
1670 prepare_schedule (aTHX_ ta); 1735 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1736 api_ready (aTHX_ prev);
1672 } 1737 }
1673 else 1738 else
1674 ta->prev = ta->next = SvSTATE (prev); 1739 prepare_nop (aTHX_ ta);
1675} 1740}
1676 1741
1677static void 1742static void
1678api_schedule (void) 1743api_schedule (pTHX)
1679{ 1744{
1680 dTHX;
1681 struct transfer_args ta; 1745 struct coro_transfer_args ta;
1682 1746
1683 prepare_schedule (aTHX_ &ta); 1747 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1748 TRANSFER (ta, 1);
1685} 1749}
1686 1750
1751static void
1752api_schedule_to (pTHX_ SV *coro_sv)
1753{
1754 struct coro_transfer_args ta;
1755 struct coro *next = SvSTATE (coro_sv);
1756
1757 SvREFCNT_inc_NN (coro_sv);
1758 prepare_schedule_to (aTHX_ &ta, next);
1759}
1760
1687static int 1761static int
1688api_cede (void) 1762api_cede (pTHX)
1689{ 1763{
1690 dTHX;
1691 struct transfer_args ta; 1764 struct coro_transfer_args ta;
1692 1765
1693 prepare_cede (aTHX_ &ta); 1766 prepare_cede (aTHX_ &ta);
1694 1767
1695 if (expect_true (ta.prev != ta.next)) 1768 if (expect_true (ta.prev != ta.next))
1696 { 1769 {
… …
1700 else 1773 else
1701 return 0; 1774 return 0;
1702} 1775}
1703 1776
1704static int 1777static int
1705api_cede_notself (void) 1778api_cede_notself (pTHX)
1706{ 1779{
1707 if (coro_nready) 1780 if (coro_nready)
1708 { 1781 {
1709 dTHX;
1710 struct transfer_args ta; 1782 struct coro_transfer_args ta;
1711 1783
1712 prepare_cede_notself (aTHX_ &ta); 1784 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1785 TRANSFER (ta, 1);
1714 return 1; 1786 return 1;
1715 } 1787 }
1716 else 1788 else
1717 return 0; 1789 return 0;
1718} 1790}
1719 1791
1720static void 1792static void
1721api_trace (SV *coro_sv, int flags) 1793api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1794{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1795 struct coro *coro = SvSTATE (coro_sv);
1796
1797 if (coro->flags & CF_RUNNING)
1798 croak ("cannot enable tracing on a running coroutine, caught");
1725 1799
1726 if (flags & CC_TRACE) 1800 if (flags & CC_TRACE)
1727 { 1801 {
1728 if (!coro->cctx) 1802 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1803 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1804 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1805 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 1806
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1807 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1808 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1809 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1810 {
… …
1741 else 1815 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1816 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1817 }
1744} 1818}
1745 1819
1746#if 0 1820static void
1821coro_call_on_destroy (pTHX_ struct coro *coro)
1822{
1823 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1824 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1825
1826 if (on_destroyp)
1827 {
1828 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1829
1830 while (AvFILLp (on_destroy) >= 0)
1831 {
1832 dSP; /* don't disturb outer sp */
1833 SV *cb = av_pop (on_destroy);
1834
1835 PUSHMARK (SP);
1836
1837 if (statusp)
1838 {
1839 int i;
1840 AV *status = (AV *)SvRV (*statusp);
1841 EXTEND (SP, AvFILLp (status) + 1);
1842
1843 for (i = 0; i <= AvFILLp (status); ++i)
1844 PUSHs (AvARRAY (status)[i]);
1845 }
1846
1847 PUTBACK;
1848 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1849 }
1850 }
1851}
1852
1853static void
1854slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1855{
1856 int i;
1857 HV *hv = (HV *)SvRV (coro_current);
1858 AV *av = newAV ();
1859
1860 av_extend (av, items - 1);
1861 for (i = 0; i < items; ++i)
1862 av_push (av, SvREFCNT_inc_NN (arg [i]));
1863
1864 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1865
1866 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1867 api_ready (aTHX_ sv_manager);
1868
1869 frame->prepare = prepare_schedule;
1870 frame->check = slf_check_repeat;
1871
1872 /* as a minor optimisation, we could unwind all stacks here */
1873 /* but that puts extra pressure on pp_slf, and is not worth much */
1874 /*coro_unwind_stacks (aTHX);*/
1875}
1876
1877/*****************************************************************************/
1878/* async pool handler */
1879
1747static int 1880static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1881slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 1882{
1750 AV *padlist; 1883 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 1884 struct coro *coro = (struct coro *)frame->data;
1752 1885
1753 abort (); 1886 if (!coro->invoke_cb)
1887 return 1; /* loop till we have invoke */
1888 else
1889 {
1890 hv_store (hv, "desc", sizeof ("desc") - 1,
1891 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1892
1893 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1894
1895 {
1896 dSP;
1897 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1898 PUTBACK;
1899 }
1900
1901 SvREFCNT_dec (GvAV (PL_defgv));
1902 GvAV (PL_defgv) = coro->invoke_av;
1903 coro->invoke_av = 0;
1904
1905 return 0;
1906 }
1907}
1908
1909static void
1910slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 HV *hv = (HV *)SvRV (coro_current);
1913 struct coro *coro = SvSTATE_hv ((SV *)hv);
1914
1915 if (expect_true (coro->saved_deffh))
1916 {
1917 /* subsequent iteration */
1918 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1919 coro->saved_deffh = 0;
1920
1921 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1922 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1923 {
1924 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1925 coro->invoke_av = newAV ();
1926
1927 frame->prepare = prepare_nop;
1928 }
1929 else
1930 {
1931 av_clear (GvAV (PL_defgv));
1932 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1933
1934 coro->prio = 0;
1935
1936 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1937 api_trace (aTHX_ coro_current, 0);
1938
1939 frame->prepare = prepare_schedule;
1940 av_push (av_async_pool, SvREFCNT_inc (hv));
1941 }
1942 }
1943 else
1944 {
1945 /* first iteration, simply fall through */
1946 frame->prepare = prepare_nop;
1947 }
1948
1949 frame->check = slf_check_pool_handler;
1950 frame->data = (void *)coro;
1951}
1952
1953/*****************************************************************************/
1954/* rouse callback */
1955
1956#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1957
1958static void
1959coro_rouse_callback (pTHX_ CV *cv)
1960{
1961 dXSARGS;
1962 SV *data = (SV *)GENSUB_ARG;
1963
1964 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1965 {
1966 /* first call, set args */
1967 AV *av = newAV ();
1968 SV *coro = SvRV (data);
1969
1970 SvRV_set (data, (SV *)av);
1971 api_ready (aTHX_ coro);
1972 SvREFCNT_dec (coro);
1973
1974 /* better take a full copy of the arguments */
1975 while (items--)
1976 av_store (av, items, newSVsv (ST (items)));
1977 }
1978
1979 XSRETURN_EMPTY;
1980}
1981
1982static int
1983slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1984{
1985 SV *data = (SV *)frame->data;
1986
1987 if (CORO_THROW)
1988 return 0;
1989
1990 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991 return 1;
1992
1993 /* now push all results on the stack */
1994 {
1995 dSP;
1996 AV *av = (AV *)SvRV (data);
1997 int i;
1998
1999 EXTEND (SP, AvFILLp (av) + 1);
2000 for (i = 0; i <= AvFILLp (av); ++i)
2001 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2002
2003 /* we have stolen the elements, so ste length to zero and free */
2004 AvFILLp (av) = -1;
2005 av_undef (av);
2006
2007 PUTBACK;
2008 }
1754 2009
1755 return 0; 2010 return 0;
1756} 2011}
1757 2012
1758static MGVTBL coro_gensub_vtbl = { 2013static void
1759 0, 0, 0, 0, 2014slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2015{
1761}; 2016 SV *cb;
1762#endif 2017
2018 if (items)
2019 cb = arg [0];
2020 else
2021 {
2022 struct coro *coro = SvSTATE_current;
2023
2024 if (!coro->rouse_cb)
2025 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2026
2027 cb = sv_2mortal (coro->rouse_cb);
2028 coro->rouse_cb = 0;
2029 }
2030
2031 if (!SvROK (cb)
2032 || SvTYPE (SvRV (cb)) != SVt_PVCV
2033 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2034 croak ("Coro::rouse_wait called with illegal callback argument,");
2035
2036 {
2037 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2038 SV *data = (SV *)GENSUB_ARG;
2039
2040 frame->data = (void *)data;
2041 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2042 frame->check = slf_check_rouse_wait;
2043 }
2044}
2045
2046static SV *
2047coro_new_rouse_cb (pTHX)
2048{
2049 HV *hv = (HV *)SvRV (coro_current);
2050 struct coro *coro = SvSTATE_hv (hv);
2051 SV *data = newRV_inc ((SV *)hv);
2052 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2053
2054 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2055 SvREFCNT_dec (data); /* magicext increases the refcount */
2056
2057 SvREFCNT_dec (coro->rouse_cb);
2058 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2059
2060 return cb;
2061}
2062
2063/*****************************************************************************/
2064/* schedule-like-function opcode (SLF) */
2065
2066static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2067static const CV *slf_cv;
2068static SV **slf_argv;
2069static int slf_argc, slf_arga; /* count, allocated */
2070static I32 slf_ax; /* top of stack, for restore */
2071
2072/* this restores the stack in the case we patched the entersub, to */
2073/* recreate the stack frame as perl will on following calls */
2074/* since entersub cleared the stack */
2075static OP *
2076pp_restore (pTHX)
2077{
2078 int i;
2079 SV **SP = PL_stack_base + slf_ax;
2080
2081 PUSHMARK (SP);
2082
2083 EXTEND (SP, slf_argc + 1);
2084
2085 for (i = 0; i < slf_argc; ++i)
2086 PUSHs (sv_2mortal (slf_argv [i]));
2087
2088 PUSHs ((SV *)CvGV (slf_cv));
2089
2090 RETURNOP (slf_restore.op_first);
2091}
2092
2093static void
2094slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2095{
2096 SV **arg = (SV **)slf_frame.data;
2097
2098 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2099}
2100
2101static void
2102slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2103{
2104 if (items != 2)
2105 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2106
2107 frame->prepare = slf_prepare_transfer;
2108 frame->check = slf_check_nop;
2109 frame->data = (void *)arg; /* let's hope it will stay valid */
2110}
2111
2112static void
2113slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2114{
2115 frame->prepare = prepare_schedule;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2121{
2122 struct coro *next = (struct coro *)slf_frame.data;
2123
2124 SvREFCNT_inc_NN (next->hv);
2125 prepare_schedule_to (aTHX_ ta, next);
2126}
2127
2128static void
2129slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 if (!items)
2132 croak ("Coro::schedule_to expects a coroutine argument, caught");
2133
2134 frame->data = (void *)SvSTATE (arg [0]);
2135 frame->prepare = slf_prepare_schedule_to;
2136 frame->check = slf_check_nop;
2137}
2138
2139static void
2140slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 api_ready (aTHX_ SvRV (coro_current));
2143
2144 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2145}
2146
2147static void
2148slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 frame->prepare = prepare_cede;
2151 frame->check = slf_check_nop;
2152}
2153
2154static void
2155slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 frame->prepare = prepare_cede_notself;
2158 frame->check = slf_check_nop;
2159}
2160
2161/*
2162 * these not obviously related functions are all rolled into one
2163 * function to increase chances that they all will call transfer with the same
2164 * stack offset
2165 * SLF stands for "schedule-like-function".
2166 */
2167static OP *
2168pp_slf (pTHX)
2169{
2170 I32 checkmark; /* mark SP to see how many elements check has pushed */
2171
2172 /* set up the slf frame, unless it has already been set-up */
2173 /* the latter happens when a new coro has been started */
2174 /* or when a new cctx was attached to an existing coroutine */
2175 if (expect_true (!slf_frame.prepare))
2176 {
2177 /* first iteration */
2178 dSP;
2179 SV **arg = PL_stack_base + TOPMARK + 1;
2180 int items = SP - arg; /* args without function object */
2181 SV *gv = *sp;
2182
2183 /* do a quick consistency check on the "function" object, and if it isn't */
2184 /* for us, divert to the real entersub */
2185 if (SvTYPE (gv) != SVt_PVGV
2186 || !GvCV (gv)
2187 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2188 return PL_ppaddr[OP_ENTERSUB](aTHX);
2189
2190 if (!(PL_op->op_flags & OPf_STACKED))
2191 {
2192 /* ampersand-form of call, use @_ instead of stack */
2193 AV *av = GvAV (PL_defgv);
2194 arg = AvARRAY (av);
2195 items = AvFILLp (av) + 1;
2196 }
2197
2198 /* now call the init function, which needs to set up slf_frame */
2199 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2200 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2201
2202 /* pop args */
2203 SP = PL_stack_base + POPMARK;
2204
2205 PUTBACK;
2206 }
2207
2208 /* now that we have a slf_frame, interpret it! */
2209 /* we use a callback system not to make the code needlessly */
2210 /* complicated, but so we can run multiple perl coros from one cctx */
2211
2212 do
2213 {
2214 struct coro_transfer_args ta;
2215
2216 slf_frame.prepare (aTHX_ &ta);
2217 TRANSFER (ta, 0);
2218
2219 checkmark = PL_stack_sp - PL_stack_base;
2220 }
2221 while (slf_frame.check (aTHX_ &slf_frame));
2222
2223 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2224
2225 /* exception handling */
2226 if (expect_false (CORO_THROW))
2227 {
2228 SV *exception = sv_2mortal (CORO_THROW);
2229
2230 CORO_THROW = 0;
2231 sv_setsv (ERRSV, exception);
2232 croak (0);
2233 }
2234
2235 /* return value handling - mostly like entersub */
2236 /* make sure we put something on the stack in scalar context */
2237 if (GIMME_V == G_SCALAR)
2238 {
2239 dSP;
2240 SV **bot = PL_stack_base + checkmark;
2241
2242 if (sp == bot) /* too few, push undef */
2243 bot [1] = &PL_sv_undef;
2244 else if (sp != bot + 1) /* too many, take last one */
2245 bot [1] = *sp;
2246
2247 SP = bot + 1;
2248
2249 PUTBACK;
2250 }
2251
2252 return NORMAL;
2253}
2254
2255static void
2256api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2257{
2258 int i;
2259 SV **arg = PL_stack_base + ax;
2260 int items = PL_stack_sp - arg + 1;
2261
2262 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2263
2264 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2265 && PL_op->op_ppaddr != pp_slf)
2266 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2267
2268 CvFLAGS (cv) |= CVf_SLF;
2269 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2270 slf_cv = cv;
2271
2272 /* we patch the op, and then re-run the whole call */
2273 /* we have to put the same argument on the stack for this to work */
2274 /* and this will be done by pp_restore */
2275 slf_restore.op_next = (OP *)&slf_restore;
2276 slf_restore.op_type = OP_CUSTOM;
2277 slf_restore.op_ppaddr = pp_restore;
2278 slf_restore.op_first = PL_op;
2279
2280 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2281
2282 if (PL_op->op_flags & OPf_STACKED)
2283 {
2284 if (items > slf_arga)
2285 {
2286 slf_arga = items;
2287 free (slf_argv);
2288 slf_argv = malloc (slf_arga * sizeof (SV *));
2289 }
2290
2291 slf_argc = items;
2292
2293 for (i = 0; i < items; ++i)
2294 slf_argv [i] = SvREFCNT_inc (arg [i]);
2295 }
2296 else
2297 slf_argc = 0;
2298
2299 PL_op->op_ppaddr = pp_slf;
2300 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2301
2302 PL_op = (OP *)&slf_restore;
2303}
1763 2304
1764/*****************************************************************************/ 2305/*****************************************************************************/
1765/* PerlIO::cede */ 2306/* PerlIO::cede */
1766 2307
1767typedef struct 2308typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2336 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2337 double now = nvtime ();
1797 2338
1798 if (now >= self->next) 2339 if (now >= self->next)
1799 { 2340 {
1800 api_cede (); 2341 api_cede (aTHX);
1801 self->next = now + self->every; 2342 self->next = now + self->every;
1802 } 2343 }
1803 2344
1804 return PerlIOBuf_flush (aTHX_ f); 2345 return PerlIOBuf_flush (aTHX_ f);
1805} 2346}
… …
1835 PerlIOBuf_get_cnt, 2376 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2377 PerlIOBuf_set_ptrcnt,
1837}; 2378};
1838 2379
1839/*****************************************************************************/ 2380/*****************************************************************************/
2381/* Coro::Semaphore & Coro::Signal */
1840 2382
1841static const CV *slf_cv; /* for quick consistency check */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *slf_arg0;
1845static SV *slf_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 * 2383static SV *
1851pp_restore (pTHX) 2384coro_waitarray_new (pTHX_ int count)
1852{ 2385{
2386 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2387 AV *av = newAV ();
2388 SV **ary;
2389
2390 /* unfortunately, building manually saves memory */
2391 Newx (ary, 2, SV *);
2392 AvALLOC (av) = ary;
2393#if PERL_VERSION_ATLEAST (5,10,0)
2394 AvARRAY (av) = ary;
2395#else
2396 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2397 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2398 SvPVX ((SV *)av) = (char *)ary;
2399#endif
2400 AvMAX (av) = 1;
2401 AvFILLp (av) = 0;
2402 ary [0] = newSViv (count);
2403
2404 return newRV_noinc ((SV *)av);
2405}
2406
2407/* semaphore */
2408
2409static void
2410coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2411{
2412 SV *count_sv = AvARRAY (av)[0];
2413 IV count = SvIVX (count_sv);
2414
2415 count += adjust;
2416 SvIVX (count_sv) = count;
2417
2418 /* now wake up as many waiters as are expected to lock */
2419 while (count > 0 && AvFILLp (av) > 0)
2420 {
2421 SV *cb;
2422
2423 /* swap first two elements so we can shift a waiter */
2424 AvARRAY (av)[0] = AvARRAY (av)[1];
2425 AvARRAY (av)[1] = count_sv;
2426 cb = av_shift (av);
2427
2428 if (SvOBJECT (cb))
2429 {
2430 api_ready (aTHX_ cb);
2431 --count;
2432 }
2433 else if (SvTYPE (cb) == SVt_PVCV)
2434 {
2435 dSP;
2436 PUSHMARK (SP);
2437 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2438 PUTBACK;
2439 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2440 }
2441
2442 SvREFCNT_dec (cb);
2443 }
2444}
2445
2446static void
2447coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2448{
2449 /* call $sem->adjust (0) to possibly wake up some other waiters */
2450 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2451}
2452
2453static int
2454slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2455{
2456 AV *av = (AV *)frame->data;
2457 SV *count_sv = AvARRAY (av)[0];
2458
2459 /* if we are about to throw, don't actually acquire the lock, just throw */
2460 if (CORO_THROW)
2461 return 0;
2462 else if (SvIVX (count_sv) > 0)
2463 {
2464 SvSTATE_current->on_destroy = 0;
2465
2466 if (acquire)
2467 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2468 else
2469 coro_semaphore_adjust (aTHX_ av, 0);
2470
2471 return 0;
2472 }
2473 else
2474 {
2475 int i;
2476 /* if we were woken up but can't down, we look through the whole */
2477 /* waiters list and only add us if we aren't in there already */
2478 /* this avoids some degenerate memory usage cases */
2479
2480 for (i = 1; i <= AvFILLp (av); ++i)
2481 if (AvARRAY (av)[i] == SvRV (coro_current))
2482 return 1;
2483
2484 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2485 return 1;
2486 }
2487}
2488
2489static int
2490slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2493}
2494
2495static int
2496slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2497{
2498 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2499}
2500
2501static void
2502slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 AV *av = (AV *)SvRV (arg [0]);
2505
2506 if (SvIVX (AvARRAY (av)[0]) > 0)
2507 {
2508 frame->data = (void *)av;
2509 frame->prepare = prepare_nop;
2510 }
2511 else
2512 {
2513 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2514
2515 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2516 frame->prepare = prepare_schedule;
2517
2518 /* to avoid race conditions when a woken-up coro gets terminated */
2519 /* we arrange for a temporary on_destroy that calls adjust (0) */
2520 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2521 }
2522}
2523
2524static void
2525slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2526{
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_down;
2529}
2530
2531static void
2532slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2533{
2534 if (items >= 2)
2535 {
2536 /* callback form */
2537 AV *av = (AV *)SvRV (arg [0]);
2538 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2539
2540 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2541
2542 if (SvIVX (AvARRAY (av)[0]) > 0)
2543 coro_semaphore_adjust (aTHX_ av, 0);
2544
2545 frame->prepare = prepare_nop;
2546 frame->check = slf_check_nop;
2547 }
2548 else
2549 {
2550 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2551 frame->check = slf_check_semaphore_wait;
2552 }
2553}
2554
2555/* signal */
2556
2557static void
2558coro_signal_wake (pTHX_ AV *av, int count)
2559{
2560 SvIVX (AvARRAY (av)[0]) = 0;
2561
2562 /* now signal count waiters */
2563 while (count > 0 && AvFILLp (av) > 0)
2564 {
2565 SV *cb;
2566
2567 /* swap first two elements so we can shift a waiter */
2568 cb = AvARRAY (av)[0];
2569 AvARRAY (av)[0] = AvARRAY (av)[1];
2570 AvARRAY (av)[1] = cb;
2571
2572 cb = av_shift (av);
2573
2574 api_ready (aTHX_ cb);
2575 sv_setiv (cb, 0); /* signal waiter */
2576 SvREFCNT_dec (cb);
2577
2578 --count;
2579 }
2580}
2581
2582static int
2583slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2584{
2585 /* if we are about to throw, also stop waiting */
2586 return SvROK ((SV *)frame->data) && !CORO_THROW;
2587}
2588
2589static void
2590slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2591{
2592 AV *av = (AV *)SvRV (arg [0]);
2593
2594 if (SvIVX (AvARRAY (av)[0]))
2595 {
2596 SvIVX (AvARRAY (av)[0]) = 0;
2597 frame->prepare = prepare_nop;
2598 frame->check = slf_check_nop;
2599 }
2600 else
2601 {
2602 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2603
2604 av_push (av, waiter);
2605
2606 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2607 frame->prepare = prepare_schedule;
2608 frame->check = slf_check_signal_wait;
2609 }
2610}
2611
2612/*****************************************************************************/
2613/* Coro::AIO */
2614
2615#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2616
2617/* helper storage struct */
2618struct io_state
2619{
2620 int errorno;
2621 I32 laststype; /* U16 in 5.10.0 */
2622 int laststatval;
2623 Stat_t statcache;
2624};
2625
2626static void
2627coro_aio_callback (pTHX_ CV *cv)
2628{
2629 dXSARGS;
2630 AV *state = (AV *)GENSUB_ARG;
2631 SV *coro = av_pop (state);
2632 SV *data_sv = newSV (sizeof (struct io_state));
2633
2634 av_extend (state, items - 1);
2635
2636 sv_upgrade (data_sv, SVt_PV);
2637 SvCUR_set (data_sv, sizeof (struct io_state));
2638 SvPOK_only (data_sv);
2639
2640 {
2641 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2642
2643 data->errorno = errno;
2644 data->laststype = PL_laststype;
2645 data->laststatval = PL_laststatval;
2646 data->statcache = PL_statcache;
2647 }
2648
2649 /* now build the result vector out of all the parameters and the data_sv */
2650 {
2651 int i;
2652
2653 for (i = 0; i < items; ++i)
2654 av_push (state, SvREFCNT_inc_NN (ST (i)));
2655 }
2656
2657 av_push (state, data_sv);
2658
2659 api_ready (aTHX_ coro);
2660 SvREFCNT_dec (coro);
2661 SvREFCNT_dec ((AV *)state);
2662}
2663
2664static int
2665slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2666{
2667 AV *state = (AV *)frame->data;
2668
2669 /* if we are about to throw, return early */
2670 /* this does not cancel the aio request, but at least */
2671 /* it quickly returns */
2672 if (CORO_THROW)
2673 return 0;
2674
2675 /* one element that is an RV? repeat! */
2676 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2677 return 1;
2678
2679 /* restore status */
2680 {
2681 SV *data_sv = av_pop (state);
2682 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2683
2684 errno = data->errorno;
2685 PL_laststype = data->laststype;
2686 PL_laststatval = data->laststatval;
2687 PL_statcache = data->statcache;
2688
2689 SvREFCNT_dec (data_sv);
2690 }
2691
2692 /* push result values */
2693 {
1853 dSP; 2694 dSP;
2695 int i;
1854 2696
2697 EXTEND (SP, AvFILLp (state) + 1);
2698 for (i = 0; i <= AvFILLp (state); ++i)
2699 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2700
2701 PUTBACK;
2702 }
2703
2704 return 0;
2705}
2706
2707static void
2708slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2711 SV *coro_hv = SvRV (coro_current);
2712 struct coro *coro = SvSTATE_hv (coro_hv);
2713
2714 /* put our coroutine id on the state arg */
2715 av_push (state, SvREFCNT_inc_NN (coro_hv));
2716
2717 /* first see whether we have a non-zero priority and set it as AIO prio */
2718 if (coro->prio)
2719 {
2720 dSP;
2721
2722 static SV *prio_cv;
2723 static SV *prio_sv;
2724
2725 if (expect_false (!prio_cv))
2726 {
2727 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2728 prio_sv = newSViv (0);
2729 }
2730
2731 PUSHMARK (SP);
2732 sv_setiv (prio_sv, coro->prio);
2733 XPUSHs (prio_sv);
2734
2735 PUTBACK;
2736 call_sv (prio_cv, G_VOID | G_DISCARD);
2737 }
2738
2739 /* now call the original request */
2740 {
2741 dSP;
2742 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2743 int i;
2744
1855 PUSHMARK (SP); 2745 PUSHMARK (SP);
1856 2746
1857 EXTEND (SP, 3); 2747 /* first push all args to the stack */
1858 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2748 EXTEND (SP, items + 1);
1859 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1860 PUSHs ((SV *)CvGV (slf_cv));
1861 2749
1862 RETURNOP (slf_restore.op_first); 2750 for (i = 0; i < items; ++i)
1863} 2751 PUSHs (arg [i]);
1864 2752
1865#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2753 /* now push the callback closure */
2754 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2755
1867/* declare prototype */ 2756 /* 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 * SLF stands for "schedule-like-function".
1875 */
1876static OP *
1877pp_slf (pTHX)
1878{
1879 dSP;
1880 struct transfer_args ta;
1881 SV **arg = PL_stack_base + TOPMARK + 1;
1882 int items = SP - arg; /* args without function object */
1883
1884 /* do a quick consistency check on the "function" object, and if it isn't */
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2757 PUTBACK;
1901 switch (PL_op->op_private & OPpENTERSUB_SLF) 2758 call_sv ((SV *)req, G_VOID | G_DISCARD);
1902 {
1903 case 0:
1904 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905 break;
1906
1907 case 1:
1908 if (items != 2)
1909 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912 break;
1913
1914 case 2:
1915 prepare_schedule (aTHX_ &ta);
1916 break;
1917
1918 case 3:
1919 prepare_cede (aTHX_ &ta);
1920 break;
1921
1922 case 4:
1923 prepare_cede_notself (aTHX_ &ta);
1924 break;
1925
1926 case 5:
1927 abort ();
1928
1929 default:
1930 abort ();
1931 } 2759 }
1932 2760
1933 TRANSFER (ta, 0); 2761 /* now that the requets is going, we loop toll we have a result */
1934 SPAGAIN; 2762 frame->data = (void *)state;
1935 2763 frame->prepare = prepare_schedule;
1936 PUTBACK; 2764 frame->check = slf_check_aio_req;
1937 SLF_TAIL;
1938 SPAGAIN;
1939 RETURN;
1940} 2765}
1941 2766
1942static void 2767static void
1943coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2768coro_aio_req_xs (pTHX_ CV *cv)
1944{ 2769{
1945 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2770 dXSARGS;
1946 2771
1947 assert (("FATAL: SLF call with illegal CV value", CvGV (cv))); 2772 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1948 slf_cv = cv;
1949 2773
1950 /* we patch the op, and then re-run the whole call */ 2774 XSRETURN_EMPTY;
1951 /* we have to put the same argument on the stack for this to work */
1952 /* and this will be done by pp_restore */
1953 slf_restore.op_next = (OP *)&slf_restore;
1954 slf_restore.op_type = OP_NULL;
1955 slf_restore.op_ppaddr = pp_restore;
1956 slf_restore.op_first = PL_op;
1957
1958 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1959 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1960
1961 PL_op->op_ppaddr = pp_slf;
1962 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1963
1964 PL_op = (OP *)&slf_restore;
1965} 2775}
2776
2777/*****************************************************************************/
2778
2779#if CORO_CLONE
2780# include "clone.c"
2781#endif
1966 2782
1967MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2783MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968 2784
1969PROTOTYPES: DISABLE 2785PROTOTYPES: DISABLE
1970 2786
1971BOOT: 2787BOOT:
1972{ 2788{
1973#ifdef USE_ITHREADS 2789#ifdef USE_ITHREADS
1974 MUTEX_INIT (&coro_lock);
1975# if CORO_PTHREAD 2790# if CORO_PTHREAD
1976 coro_thx = PERL_GET_CONTEXT; 2791 coro_thx = PERL_GET_CONTEXT;
1977# endif 2792# endif
1978#endif 2793#endif
1979 BOOT_PAGESIZE; 2794 BOOT_PAGESIZE;
2795
2796 cctx_current = cctx_new_empty ();
1980 2797
1981 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2798 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1982 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2799 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1983 2800
1984 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2801 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2000 main_top_env = PL_top_env; 2817 main_top_env = PL_top_env;
2001 2818
2002 while (main_top_env->je_prev) 2819 while (main_top_env->je_prev)
2003 main_top_env = main_top_env->je_prev; 2820 main_top_env = main_top_env->je_prev;
2004 2821
2822 {
2823 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2824
2825 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2826 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2827
2828 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2829 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2830 }
2831
2005 coroapi.ver = CORO_API_VERSION; 2832 coroapi.ver = CORO_API_VERSION;
2006 coroapi.rev = CORO_API_REVISION; 2833 coroapi.rev = CORO_API_REVISION;
2834
2007 coroapi.transfer = api_transfer; 2835 coroapi.transfer = api_transfer;
2836
2837 coroapi.sv_state = SvSTATE_;
2838 coroapi.execute_slf = api_execute_slf;
2839 coroapi.prepare_nop = prepare_nop;
2840 coroapi.prepare_schedule = prepare_schedule;
2841 coroapi.prepare_cede = prepare_cede;
2842 coroapi.prepare_cede_notself = prepare_cede_notself;
2008 2843
2009 { 2844 {
2010 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2845 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2011 2846
2012 if (!svp) croak ("Time::HiRes is required"); 2847 if (!svp) croak ("Time::HiRes is required");
… …
2018 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2853 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2019} 2854}
2020 2855
2021SV * 2856SV *
2022new (char *klass, ...) 2857new (char *klass, ...)
2858 ALIAS:
2859 Coro::new = 1
2023 CODE: 2860 CODE:
2024{ 2861{
2025 struct coro *coro; 2862 struct coro *coro;
2026 MAGIC *mg; 2863 MAGIC *mg;
2027 HV *hv; 2864 HV *hv;
2865 CV *cb;
2028 int i; 2866 int i;
2867
2868 if (items > 1)
2869 {
2870 cb = coro_sv_2cv (aTHX_ ST (1));
2871
2872 if (!ix)
2873 {
2874 if (CvISXSUB (cb))
2875 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2876
2877 if (!CvROOT (cb))
2878 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2879 }
2880 }
2029 2881
2030 Newz (0, coro, 1, struct coro); 2882 Newz (0, coro, 1, struct coro);
2031 coro->args = newAV (); 2883 coro->args = newAV ();
2032 coro->flags = CF_NEW; 2884 coro->flags = CF_NEW;
2033 2885
… …
2038 coro->hv = hv = newHV (); 2890 coro->hv = hv = newHV ();
2039 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2891 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2040 mg->mg_flags |= MGf_DUP; 2892 mg->mg_flags |= MGf_DUP;
2041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2893 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2042 2894
2895 if (items > 1)
2896 {
2043 av_extend (coro->args, items - 1); 2897 av_extend (coro->args, items - 1 + ix - 1);
2898
2899 if (ix)
2900 {
2901 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2902 cb = cv_coro_run;
2903 }
2904
2905 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2906
2044 for (i = 1; i < items; i++) 2907 for (i = 2; i < items; i++)
2045 av_push (coro->args, newSVsv (ST (i))); 2908 av_push (coro->args, newSVsv (ST (i)));
2909 }
2046} 2910}
2047 OUTPUT: 2911 OUTPUT:
2048 RETVAL 2912 RETVAL
2049 2913
2050void 2914void
2051_set_stacklevel (...) 2915transfer (...)
2052 ALIAS: 2916 PROTOTYPE: $$
2053 Coro::State::transfer = 1 2917 CODE:
2054 Coro::schedule = 2 2918 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2055 Coro::cede = 3
2056 Coro::cede_notself = 4
2057 CODE:
2058 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2059 2919
2060bool 2920bool
2061_destroy (SV *coro_sv) 2921_destroy (SV *coro_sv)
2062 CODE: 2922 CODE:
2063 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2923 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2068_exit (int code) 2928_exit (int code)
2069 PROTOTYPE: $ 2929 PROTOTYPE: $
2070 CODE: 2930 CODE:
2071 _exit (code); 2931 _exit (code);
2072 2932
2933SV *
2934clone (Coro::State coro)
2935 CODE:
2936{
2937#if CORO_CLONE
2938 struct coro *ncoro = coro_clone (aTHX_ coro);
2939 MAGIC *mg;
2940 /* TODO: too much duplication */
2941 ncoro->hv = newHV ();
2942 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2943 mg->mg_flags |= MGf_DUP;
2944 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2945#else
2946 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2947#endif
2948}
2949 OUTPUT:
2950 RETVAL
2951
2073int 2952int
2074cctx_stacksize (int new_stacksize = 0) 2953cctx_stacksize (int new_stacksize = 0)
2954 PROTOTYPE: ;$
2075 CODE: 2955 CODE:
2076 RETVAL = cctx_stacksize; 2956 RETVAL = cctx_stacksize;
2077 if (new_stacksize) 2957 if (new_stacksize)
2078 { 2958 {
2079 cctx_stacksize = new_stacksize; 2959 cctx_stacksize = new_stacksize;
… …
2082 OUTPUT: 2962 OUTPUT:
2083 RETVAL 2963 RETVAL
2084 2964
2085int 2965int
2086cctx_max_idle (int max_idle = 0) 2966cctx_max_idle (int max_idle = 0)
2967 PROTOTYPE: ;$
2087 CODE: 2968 CODE:
2088 RETVAL = cctx_max_idle; 2969 RETVAL = cctx_max_idle;
2089 if (max_idle > 1) 2970 if (max_idle > 1)
2090 cctx_max_idle = max_idle; 2971 cctx_max_idle = max_idle;
2091 OUTPUT: 2972 OUTPUT:
2092 RETVAL 2973 RETVAL
2093 2974
2094int 2975int
2095cctx_count () 2976cctx_count ()
2977 PROTOTYPE:
2096 CODE: 2978 CODE:
2097 RETVAL = cctx_count; 2979 RETVAL = cctx_count;
2098 OUTPUT: 2980 OUTPUT:
2099 RETVAL 2981 RETVAL
2100 2982
2101int 2983int
2102cctx_idle () 2984cctx_idle ()
2985 PROTOTYPE:
2103 CODE: 2986 CODE:
2104 RETVAL = cctx_idle; 2987 RETVAL = cctx_idle;
2105 OUTPUT: 2988 OUTPUT:
2106 RETVAL 2989 RETVAL
2107 2990
2108void 2991void
2109list () 2992list ()
2993 PROTOTYPE:
2110 PPCODE: 2994 PPCODE:
2111{ 2995{
2112 struct coro *coro; 2996 struct coro *coro;
2113 for (coro = coro_first; coro; coro = coro->next) 2997 for (coro = coro_first; coro; coro = coro->next)
2114 if (coro->hv) 2998 if (coro->hv)
… …
2176 3060
2177void 3061void
2178throw (Coro::State self, SV *throw = &PL_sv_undef) 3062throw (Coro::State self, SV *throw = &PL_sv_undef)
2179 PROTOTYPE: $;$ 3063 PROTOTYPE: $;$
2180 CODE: 3064 CODE:
3065{
3066 struct coro *current = SvSTATE_current;
3067 SV **throwp = self == current ? &CORO_THROW : &self->except;
2181 SvREFCNT_dec (self->throw); 3068 SvREFCNT_dec (*throwp);
2182 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3069 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3070}
2183 3071
2184void 3072void
2185api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3073api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3074 PROTOTYPE: $;$
3075 C_ARGS: aTHX_ coro, flags
2186 3076
2187SV * 3077SV *
2188has_cctx (Coro::State coro) 3078has_cctx (Coro::State coro)
2189 PROTOTYPE: $ 3079 PROTOTYPE: $
2190 CODE: 3080 CODE:
2191 RETVAL = boolSV (!!coro->cctx); 3081 /* maybe manage the running flag differently */
3082 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2192 OUTPUT: 3083 OUTPUT:
2193 RETVAL 3084 RETVAL
2194 3085
2195int 3086int
2196is_traced (Coro::State coro) 3087is_traced (Coro::State coro)
… …
2214 OUTPUT: 3105 OUTPUT:
2215 RETVAL 3106 RETVAL
2216 3107
2217void 3108void
2218force_cctx () 3109force_cctx ()
3110 PROTOTYPE:
2219 CODE: 3111 CODE:
2220 struct coro *coro = SvSTATE (coro_current);
2221 coro->cctx->idle_sp = 0; 3112 cctx_current->idle_sp = 0;
2222 3113
2223void 3114void
2224swap_defsv (Coro::State self) 3115swap_defsv (Coro::State self)
2225 PROTOTYPE: $ 3116 PROTOTYPE: $
2226 ALIAS: 3117 ALIAS:
2227 swap_defav = 1 3118 swap_defav = 1
2228 CODE: 3119 CODE:
2229 if (!self->slot) 3120 if (!self->slot)
2230 croak ("cannot swap state with coroutine that has no saved state"); 3121 croak ("cannot swap state with coroutine that has no saved state,");
2231 else 3122 else
2232 { 3123 {
2233 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3124 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3125 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2235 3126
2236 SV *tmp = *src; *src = *dst; *dst = tmp; 3127 SV *tmp = *src; *src = *dst; *dst = tmp;
2237 } 3128 }
2238 3129
3130
2239MODULE = Coro::State PACKAGE = Coro 3131MODULE = Coro::State PACKAGE = Coro
2240 3132
2241BOOT: 3133BOOT:
2242{ 3134{
2243 int i; 3135 int i;
2244 3136
2245 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2246 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3137 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2247 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3138 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2248 3139 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3140 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2249 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3141 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2250 SvREADONLY_on (coro_current); 3142 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3143 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3144 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3145 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3146
3147 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3148 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3149 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3150 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2251 3151
2252 coro_stash = gv_stashpv ("Coro", TRUE); 3152 coro_stash = gv_stashpv ("Coro", TRUE);
2253 3153
2254 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3154 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2255 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3155 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2263 3163
2264 { 3164 {
2265 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3165 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2266 3166
2267 coroapi.schedule = api_schedule; 3167 coroapi.schedule = api_schedule;
3168 coroapi.schedule_to = api_schedule_to;
2268 coroapi.cede = api_cede; 3169 coroapi.cede = api_cede;
2269 coroapi.cede_notself = api_cede_notself; 3170 coroapi.cede_notself = api_cede_notself;
2270 coroapi.ready = api_ready; 3171 coroapi.ready = api_ready;
2271 coroapi.is_ready = api_is_ready; 3172 coroapi.is_ready = api_is_ready;
2272 coroapi.nready = &coro_nready; 3173 coroapi.nready = coro_nready;
2273 coroapi.current = coro_current; 3174 coroapi.current = coro_current;
2274 3175
2275 GCoroAPI = &coroapi; 3176 /*GCoroAPI = &coroapi;*/
2276 sv_setiv (sv, (IV)&coroapi); 3177 sv_setiv (sv, (IV)&coroapi);
2277 SvREADONLY_on (sv); 3178 SvREADONLY_on (sv);
2278 } 3179 }
2279} 3180}
3181
3182void
3183terminate (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3186
3187void
3188schedule (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3191
3192void
3193schedule_to (...)
3194 CODE:
3195 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3196
3197void
3198cede_to (...)
3199 CODE:
3200 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3201
3202void
3203cede (...)
3204 CODE:
3205 CORO_EXECUTE_SLF_XS (slf_init_cede);
3206
3207void
3208cede_notself (...)
3209 CODE:
3210 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3211
3212void
3213_cancel (Coro::State self)
3214 CODE:
3215 coro_state_destroy (aTHX_ self);
3216 coro_call_on_destroy (aTHX_ self);
2280 3217
2281void 3218void
2282_set_current (SV *current) 3219_set_current (SV *current)
2283 PROTOTYPE: $ 3220 PROTOTYPE: $
2284 CODE: 3221 CODE:
… …
2287 3224
2288void 3225void
2289_set_readyhook (SV *hook) 3226_set_readyhook (SV *hook)
2290 PROTOTYPE: $ 3227 PROTOTYPE: $
2291 CODE: 3228 CODE:
2292 LOCK;
2293 SvREFCNT_dec (coro_readyhook); 3229 SvREFCNT_dec (coro_readyhook);
2294 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3230 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2295 UNLOCK;
2296 3231
2297int 3232int
2298prio (Coro::State coro, int newprio = 0) 3233prio (Coro::State coro, int newprio = 0)
3234 PROTOTYPE: $;$
2299 ALIAS: 3235 ALIAS:
2300 nice = 1 3236 nice = 1
2301 CODE: 3237 CODE:
2302{ 3238{
2303 RETVAL = coro->prio; 3239 RETVAL = coro->prio;
… …
2318 3254
2319SV * 3255SV *
2320ready (SV *self) 3256ready (SV *self)
2321 PROTOTYPE: $ 3257 PROTOTYPE: $
2322 CODE: 3258 CODE:
2323 RETVAL = boolSV (api_ready (self)); 3259 RETVAL = boolSV (api_ready (aTHX_ self));
2324 OUTPUT: 3260 OUTPUT:
2325 RETVAL 3261 RETVAL
2326 3262
2327int 3263int
2328nready (...) 3264nready (...)
… …
2330 CODE: 3266 CODE:
2331 RETVAL = coro_nready; 3267 RETVAL = coro_nready;
2332 OUTPUT: 3268 OUTPUT:
2333 RETVAL 3269 RETVAL
2334 3270
2335# for async_pool speedup
2336void 3271void
2337_pool_1 (SV *cb) 3272_pool_handler (...)
2338 CODE: 3273 CODE:
2339{ 3274 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2340 struct coro *coro = SvSTATE (coro_current);
2341 HV *hv = (HV *)SvRV (coro_current);
2342 AV *defav = GvAV (PL_defgv);
2343 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2344 AV *invoke_av;
2345 int i, len;
2346 3275
2347 if (!invoke) 3276void
3277async_pool (SV *cv, ...)
3278 PROTOTYPE: &@
3279 PPCODE:
3280{
3281 HV *hv = (HV *)av_pop (av_async_pool);
3282 AV *av = newAV ();
3283 SV *cb = ST (0);
3284 int i;
3285
3286 av_extend (av, items - 2);
3287 for (i = 1; i < items; ++i)
3288 av_push (av, SvREFCNT_inc_NN (ST (i)));
3289
3290 if ((SV *)hv == &PL_sv_undef)
2348 { 3291 {
2349 SV *old = PL_diehook; 3292 PUSHMARK (SP);
2350 PL_diehook = 0; 3293 EXTEND (SP, 2);
2351 SvREFCNT_dec (old); 3294 PUSHs (sv_Coro);
2352 croak ("\3async_pool terminate\2\n"); 3295 PUSHs ((SV *)cv_pool_handler);
3296 PUTBACK;
3297 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3298 SPAGAIN;
3299
3300 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2353 } 3301 }
2354 3302
2355 SvREFCNT_dec (coro->saved_deffh);
2356 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2357
2358 hv_store (hv, "desc", sizeof ("desc") - 1,
2359 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2360
2361 invoke_av = (AV *)SvRV (invoke);
2362 len = av_len (invoke_av);
2363
2364 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2365
2366 if (len > 0)
2367 { 3303 {
2368 av_fill (defav, len - 1); 3304 struct coro *coro = SvSTATE_hv (hv);
2369 for (i = 0; i < len; ++i) 3305
2370 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3306 assert (!coro->invoke_cb);
3307 assert (!coro->invoke_av);
3308 coro->invoke_cb = SvREFCNT_inc (cb);
3309 coro->invoke_av = av;
2371 } 3310 }
2372 3311
3312 api_ready (aTHX_ (SV *)hv);
3313
3314 if (GIMME_V != G_VOID)
3315 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3316 else
2373 SvREFCNT_dec (invoke); 3317 SvREFCNT_dec (hv);
2374} 3318}
2375 3319
2376void 3320SV *
2377_pool_2 (SV *cb) 3321rouse_cb ()
3322 PROTOTYPE:
2378 CODE: 3323 CODE:
2379{ 3324 RETVAL = coro_new_rouse_cb (aTHX);
2380 struct coro *coro = SvSTATE (coro_current);
2381
2382 sv_setsv (cb, &PL_sv_undef);
2383
2384 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2385 coro->saved_deffh = 0;
2386
2387 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2388 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2389 {
2390 SV *old = PL_diehook;
2391 PL_diehook = 0;
2392 SvREFCNT_dec (old);
2393 croak ("\3async_pool terminate\2\n");
2394 }
2395
2396 av_clear (GvAV (PL_defgv));
2397 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2398 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399
2400 coro->prio = 0;
2401
2402 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403 api_trace (coro_current, 0);
2404
2405 av_push (av_async_pool, newSVsv (coro_current));
2406}
2407
2408#if 0
2409
2410void
2411_generator_call (...)
2412 PROTOTYPE: @
2413 PPCODE:
2414 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415 xxxx
2416 abort ();
2417
2418SV *
2419gensub (SV *sub, ...)
2420 PROTOTYPE: &;@
2421 CODE:
2422{
2423 struct coro *coro;
2424 MAGIC *mg;
2425 CV *xcv;
2426 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2427 int i;
2428
2429 CvGV (ncv) = CvGV (cv);
2430 CvFILE (ncv) = CvFILE (cv);
2431
2432 Newz (0, coro, 1, struct coro);
2433 coro->args = newAV ();
2434 coro->flags = CF_NEW;
2435
2436 av_extend (coro->args, items - 1);
2437 for (i = 1; i < items; i++)
2438 av_push (coro->args, newSVsv (ST (i)));
2439
2440 CvISXSUB_on (ncv);
2441 CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445 CvXSUB (ncv) = CvXSUB (xcv);
2446 CvANON_on (ncv);
2447
2448 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2449 RETVAL = newRV_noinc ((SV *)ncv);
2450}
2451 OUTPUT: 3325 OUTPUT:
2452 RETVAL 3326 RETVAL
2453 3327
2454#endif
2455
2456
2457MODULE = Coro::State PACKAGE = Coro::AIO
2458
2459void 3328void
2460_get_state (SV *self) 3329rouse_wait (...)
3330 PROTOTYPE: ;$
2461 PPCODE: 3331 PPCODE:
2462{ 3332 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2463 AV *defav = GvAV (PL_defgv);
2464 AV *av = newAV ();
2465 int i;
2466 SV *data_sv = newSV (sizeof (struct io_state));
2467 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2468 SvCUR_set (data_sv, sizeof (struct io_state));
2469 SvPOK_only (data_sv);
2470 3333
2471 data->errorno = errno;
2472 data->laststype = PL_laststype;
2473 data->laststatval = PL_laststatval;
2474 data->statcache = PL_statcache;
2475 3334
2476 av_extend (av, AvFILLp (defav) + 1 + 1); 3335MODULE = Coro::State PACKAGE = PerlIO::cede
2477 3336
2478 for (i = 0; i <= AvFILLp (defav); ++i) 3337BOOT:
2479 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3338 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2480 3339
2481 av_push (av, data_sv);
2482 3340
2483 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3341MODULE = Coro::State PACKAGE = Coro::Semaphore
2484 3342
2485 api_ready (self); 3343SV *
2486} 3344new (SV *klass, SV *count = 0)
3345 CODE:
3346 RETVAL = sv_bless (
3347 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3348 GvSTASH (CvGV (cv))
3349 );
3350 OUTPUT:
3351 RETVAL
3352
3353# helper for Coro::Channel
3354SV *
3355_alloc (int count)
3356 CODE:
3357 RETVAL = coro_waitarray_new (aTHX_ count);
3358 OUTPUT:
3359 RETVAL
3360
3361SV *
3362count (SV *self)
3363 CODE:
3364 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3365 OUTPUT:
3366 RETVAL
2487 3367
2488void 3368void
2489_set_state (SV *state) 3369up (SV *self, int adjust = 1)
2490 PROTOTYPE: $ 3370 ALIAS:
3371 adjust = 1
3372 CODE:
3373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3374
3375void
3376down (...)
3377 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3379
3380void
3381wait (...)
3382 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3384
3385void
3386try (SV *self)
3387 PPCODE:
3388{
3389 AV *av = (AV *)SvRV (self);
3390 SV *count_sv = AvARRAY (av)[0];
3391 IV count = SvIVX (count_sv);
3392
3393 if (count > 0)
3394 {
3395 --count;
3396 SvIVX (count_sv) = count;
3397 XSRETURN_YES;
3398 }
3399 else
3400 XSRETURN_NO;
3401}
3402
3403void
3404waiters (SV *self)
3405 PPCODE:
3406{
3407 AV *av = (AV *)SvRV (self);
3408 int wcount = AvFILLp (av) + 1 - 1;
3409
3410 if (GIMME_V == G_SCALAR)
3411 XPUSHs (sv_2mortal (newSViv (wcount)));
3412 else
3413 {
3414 int i;
3415 EXTEND (SP, wcount);
3416 for (i = 1; i <= wcount; ++i)
3417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3418 }
3419}
3420
3421MODULE = Coro::State PACKAGE = Coro::Signal
3422
3423SV *
3424new (SV *klass)
2491 PPCODE: 3425 CODE:
3426 RETVAL = sv_bless (
3427 coro_waitarray_new (aTHX_ 0),
3428 GvSTASH (CvGV (cv))
3429 );
3430 OUTPUT:
3431 RETVAL
3432
3433void
3434wait (...)
3435 CODE:
3436 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3437
3438void
3439broadcast (SV *self)
3440 CODE:
2492{ 3441{
2493 AV *av = (AV *)SvRV (state); 3442 AV *av = (AV *)SvRV (self);
2494 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3443 coro_signal_wake (aTHX_ av, AvFILLp (av));
2495 int i; 3444}
2496 3445
2497 errno = data->errorno; 3446void
2498 PL_laststype = data->laststype; 3447send (SV *self)
2499 PL_laststatval = data->laststatval; 3448 CODE:
2500 PL_statcache = data->statcache; 3449{
3450 AV *av = (AV *)SvRV (self);
2501 3451
2502 EXTEND (SP, AvFILLp (av)); 3452 if (AvFILLp (av))
2503 for (i = 0; i < AvFILLp (av); ++i) 3453 coro_signal_wake (aTHX_ av, 1);
2504 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3454 else
3455 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2505} 3456}
3457
3458IV
3459awaited (SV *self)
3460 CODE:
3461 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3462 OUTPUT:
3463 RETVAL
2506 3464
2507 3465
2508MODULE = Coro::State PACKAGE = Coro::AnyEvent 3466MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509 3467
2510BOOT: 3468BOOT:
2511 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3469 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512 3470
2513SV * 3471void
2514_schedule (...) 3472_schedule (...)
2515 PROTOTYPE: @
2516 CODE: 3473 CODE:
2517{ 3474{
2518 static int incede; 3475 static int incede;
2519 3476
2520 api_cede_notself (); 3477 api_cede_notself (aTHX);
2521 3478
2522 ++incede; 3479 ++incede;
2523 while (coro_nready >= incede && api_cede ()) 3480 while (coro_nready >= incede && api_cede (aTHX))
2524 ; 3481 ;
2525 3482
2526 sv_setsv (sv_activity, &PL_sv_undef); 3483 sv_setsv (sv_activity, &PL_sv_undef);
2527 if (coro_nready >= incede) 3484 if (coro_nready >= incede)
2528 { 3485 {
2529 PUSHMARK (SP); 3486 PUSHMARK (SP);
2530 PUTBACK; 3487 PUTBACK;
2531 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3488 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 SPAGAIN;
2533 } 3489 }
2534 3490
2535 --incede; 3491 --incede;
2536} 3492}
2537 3493
2538 3494
2539MODULE = Coro::State PACKAGE = PerlIO::cede 3495MODULE = Coro::State PACKAGE = Coro::AIO
2540 3496
2541BOOT: 3497void
2542 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3498_register (char *target, char *proto, SV *req)
3499 CODE:
3500{
3501 CV *req_cv = coro_sv_2cv (aTHX_ req);
3502 /* newXSproto doesn't return the CV on 5.8 */
3503 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3504 sv_setpv ((SV *)slf_cv, proto);
3505 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3506}
2543 3507

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