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Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 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
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
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. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline 143# define INLINE static inline
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 162#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 163
174static 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);
175 169
176static U32 cctx_gen; 170static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 174static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 177
185struct transfer_args 178static AV *av_destroy; /* destruction queue */
186{ 179static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
188};
189 181
190static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 184static SV *rv_diehook;
193static SV *rv_warnhook; 185static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
195 187
196/* async_pool helper stuff */ 188/* async_pool helper stuff */
197static SV *sv_pool_rss; 189static SV *sv_pool_rss;
198static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
199static 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;
200 196
201/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
202static SV *sv_activity; 198static SV *sv_activity;
203 199
204static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 210};
215 211
216/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 213typedef struct coro_cctx
214{
218 struct coro_cctx *next; 215 struct coro_cctx *next;
219 216
220 /* the stack */ 217 /* the stack */
221 void *sptr; 218 void *sptr;
222 size_t ssize; 219 size_t ssize;
… …
231#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
232 int valgrind_id; 229 int valgrind_id;
233#endif 230#endif
234 unsigned char flags; 231 unsigned char flags;
235} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
236 237
237enum { 238enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 243};
243 244
244/* 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 */
245typedef struct { 246typedef struct
247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
255#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))
256 259
257/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
258struct coro { 261struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 263 coro_cctx *cctx;
261 264
262 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 267 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
265 269
270 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
269 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);
270 276
271 /* statistics */ 277 /* statistics */
272 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
273 279
274 /* coro process data */ 280 /* coro process data */
275 int prio; 281 int prio;
276 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
277 284
278 /* async_pool */ 285 /* async_pool */
279 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
280 289
281 /* linked list */ 290 /* linked list */
282 struct coro *next, *prev; 291 struct coro *next, *prev;
283}; 292};
284 293
285typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
286typedef 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 */
287 301
288/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
289 303
290#define PRIO_MAX 3 304#define PRIO_MAX 3
291#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
296 310
297/* for Coro.pm */ 311/* for Coro.pm */
298static SV *coro_current; 312static SV *coro_current;
299static SV *coro_readyhook; 313static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
303 318
304/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
305 320
306static SV * 321static SV *
307coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 346 get_hv (name, create);
332#endif 347#endif
333 return get_hv (name, create); 348 return get_hv (name, create);
334} 349}
335 350
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
336static AV * 412static AV *
337coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
338{ 414{
339 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
341 417
342 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 424#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 426 --AvFILLp (padlist);
351 427
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
354 430
355 return newpadlist; 431 return newpadlist;
356} 432}
357 433
358static void 434static void
359free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
360{ 436{
361 /* may be during global destruction */ 437 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
363 { 439 {
364 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
365 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
366 { 443 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
368 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 446 I32 j = AvFILLp (av);
370 SV *sv; 447
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 453 }
377 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
379 } 459 }
380} 460}
381 461
382static int 462static int
… …
391 471
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 473
394 return 0; 474 return 0;
395} 475}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 476
400static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 478 0, 0, 0, 0,
402 coro_cv_free 479 coro_cv_free
403}; 480};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 481
441/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
442static void 483static void
443get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
444{ 485{
… …
450 else 491 else
451 { 492 {
452#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
459#else 500#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 502#endif
462 } 503 }
463} 504}
464 505
465static void 506static void
… …
472 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);
473 514
474 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
475 516
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
478 519
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 521}
481 522
482/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
487 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
488 c->slot = 0; 529 c->slot = 0;
489 530
490 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
491 532
492 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
496 538
497 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 540 # include "state.h"
499 #undef VAR 541 #undef VAR
500 542
… …
511 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
512 } 554 }
513 555
514 PUTBACK; 556 PUTBACK;
515 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
516} 561}
517 562
518static void 563static void
519save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
520{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
521 { 569 {
522 dSP; 570 dSP;
523 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
580 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
581 629
582 { 630 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 632
585 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
589 638
590 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 640 # include "state.h"
592 #undef VAR 641 #undef VAR
593 } 642 }
594} 643}
595 644
596/* 645/*
597 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
601 */ 650 */
602#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
604#else 653#else
605static void 654static void
606coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
607{ 656{
608 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 721 Safefree (PL_retstack);
673#endif 722#endif
674} 723}
675 724
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
676static size_t 734static size_t
677coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
678{ 736{
679 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
680 738
681 if (coro->mainstack) 739 if (coro->mainstack)
682 { 740 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
687 { 742 {
688 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
689 744 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 745 #undef SYM
693 } 746 }
694 else 747 else
695 slot = coro->slot;
696
697 if (slot)
698 { 748 {
699 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 752 }
711 } 753 }
712 754
713 return rss; 755 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 756}
742 757
743/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
744 759
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
754#endif 769#endif
755 770
756/* 771/*
757 * This overrides the default magic get method of %SIG elements. 772 * This overrides the default magic get method of %SIG elements.
758 * 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
759 * 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
760 * readback here. 775 * readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */ 776 */
765static int 777static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 778coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{ 779{
768 const char *s = MgPV_nolen_const (mg); 780 const char *s = MgPV_nolen_const (mg);
… …
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 833 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822 834
823 if (svp) 835 if (svp)
824 { 836 {
825 SV *old = *svp; 837 SV *old = *svp;
826 *svp = newSVsv (sv); 838 *svp = SvOK (sv) ? newSVsv (sv) : 0;
827 SvREFCNT_dec (old); 839 SvREFCNT_dec (old);
828 return 0; 840 return 0;
829 } 841 }
830 } 842 }
831 843
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 844 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 845}
834 846
835static 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 */
836coro_setup (pTHX_ struct coro *coro) 869coro_setup (pTHX_ struct coro *coro)
837{ 870{
838 /* 871 /*
839 * emulate part of the perl startup here. 872 * emulate part of the perl startup here.
840 */ 873 */
… …
842 875
843 PL_runops = RUNOPS_DEFAULT; 876 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 877 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 878 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 879 PL_comppad = 0;
880 PL_comppad_name = 0;
881 PL_comppad_name_fill = 0;
882 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 883 PL_curpm = 0;
848 PL_curpad = 0; 884 PL_curpad = 0;
849 PL_localizing = 0; 885 PL_localizing = 0;
850 PL_dirty = 0; 886 PL_dirty = 0;
851 PL_restartop = 0; 887 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 888#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 889 PL_parser = 0;
854#endif 890#endif
891 PL_hints = 0;
855 892
856 /* recreate the die/warn hooks */ 893 /* recreate the die/warn hooks */
857 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 );
858 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);
859 896
860 GvSV (PL_defgv) = newSV (0); 897 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 898 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 899 GvSV (PL_errgv) = newSV (0);
863 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;
864 PL_rs = newSVsv (GvSV (irsgv)); 902 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 903 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 904
867 { 905 {
868 dSP; 906 dSP;
869 UNOP myop; 907 UNOP myop;
870 908
871 Zero (&myop, 1, UNOP); 909 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 910 myop.op_next = Nullop;
911 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 912 myop.op_flags = OPf_WANT_VOID;
874 913
875 PUSHMARK (SP); 914 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 915 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 916 PUTBACK;
878 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 919 }
882 920
883 /* 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
884 * 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.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 923 */
887 SSL_HEAD; 924 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 925 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
889 926
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
890static void 939static void
891coro_destruct (pTHX_ struct coro *coro) 940coro_unwind_stacks (pTHX)
892{ 941{
893 if (!IN_DESTRUCT) 942 if (!IN_DESTRUCT)
894 { 943 {
895 /* restore all saved variables and stuff */ 944 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 945 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 953 POPSTACK_TO (PL_mainstack);
905 954
906 /* unwind main stack */ 955 /* unwind main stack */
907 dounwind (-1); 956 dounwind (-1);
908 } 957 }
958}
959
960static void
961coro_destruct_perl (pTHX_ struct coro *coro)
962{
963 coro_unwind_stacks (aTHX);
909 964
910 SvREFCNT_dec (GvSV (PL_defgv)); 965 SvREFCNT_dec (GvSV (PL_defgv));
911 SvREFCNT_dec (GvAV (PL_defgv)); 966 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv)); 967 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv); 968 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs); 969 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv)); 970 SvREFCNT_dec (GvSV (irsgv));
971 SvREFCNT_dec (GvHV (PL_hintgv));
916 972
917 SvREFCNT_dec (PL_diehook); 973 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 974 SvREFCNT_dec (PL_warnhook);
919 975
920 SvREFCNT_dec (coro->saved_deffh); 976 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 977 SvREFCNT_dec (coro->rouse_cb);
978 SvREFCNT_dec (coro->invoke_cb);
979 SvREFCNT_dec (coro->invoke_av);
922 980
923 coro_destruct_stacks (aTHX); 981 coro_destruct_stacks (aTHX);
924} 982}
925 983
926INLINE void 984INLINE void
… …
936static int 994static int
937runops_trace (pTHX) 995runops_trace (pTHX)
938{ 996{
939 COP *oldcop = 0; 997 COP *oldcop = 0;
940 int oldcxix = -2; 998 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 999
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1000 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1001 {
946 PERL_ASYNC_CHECK (); 1002 PERL_ASYNC_CHECK ();
947 1003
948 if (cctx->flags & CC_TRACE_ALL) 1004 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1005 {
950 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)
951 { 1007 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1008 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1009 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1010 AV *av = newAV (); /* return values */
955 SV **cb; 1011 SV **cb;
… …
992 1048
993 if (PL_curcop != &PL_compiling) 1049 if (PL_curcop != &PL_compiling)
994 { 1050 {
995 SV **cb; 1051 SV **cb;
996 1052
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1053 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1054 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1055 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1056
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1057 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1058 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1059 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1060 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1061 SV *fullname = sv_2mortal (newSV (0));
1007 1062
1008 if (isGV (gv)) 1063 if (isGV (gv))
… …
1013 SAVETMPS; 1068 SAVETMPS;
1014 EXTEND (SP, 3); 1069 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1070 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1071 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1072 PUSHs (fullname);
1018 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);
1019 PUTBACK; 1074 PUTBACK;
1020 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);
1021 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);
1022 SPAGAIN; 1077 SPAGAIN;
1023 FREETMPS; 1078 FREETMPS;
… …
1026 } 1081 }
1027 1082
1028 oldcxix = cxstack_ix; 1083 oldcxix = cxstack_ix;
1029 } 1084 }
1030 1085
1031 if (cctx->flags & CC_TRACE_LINE) 1086 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1087 {
1033 dSP; 1088 dSP;
1034 1089
1035 PL_runops = RUNOPS_DEFAULT; 1090 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1091 ENTER;
… …
1055 1110
1056 TAINT_NOT; 1111 TAINT_NOT;
1057 return 0; 1112 return 0;
1058} 1113}
1059 1114
1115static struct CoroSLF cctx_ssl_frame;
1116
1060static void 1117static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1118slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1119{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1120 ta->prev = 0;
1065} 1121}
1066 1122
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1123static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1124slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1125{
1070/* 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 */
1071static void NOINLINE 1132static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1133cctx_prepare (pTHX)
1073{ 1134{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1135 PL_top_env = &PL_start_env;
1078 1136
1079 if (cctx->flags & CC_TRACE) 1137 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1138 PL_runops = runops_trace;
1081 1139
1082 Zero (&myop, 1, UNOP); 1140 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1141 * that can lead to creation of a new cctx */
1084 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));
1085 1144
1086 PUSHMARK (SP); 1145 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1146 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1147
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1148 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1149 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1150}
1095 1151
1096/* 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 */
1097INLINE void 1153INLINE void
1098transfer_tail (pTHX) 1154transfer_tail (pTHX)
1099{ 1155{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1156 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1157}
1116 1158
1117/* 1159/*
1118 * this is a _very_ stripped down perl interpreter ;) 1160 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1161 */
… …
1126# endif 1168# endif
1127#endif 1169#endif
1128 { 1170 {
1129 dTHX; 1171 dTHX;
1130 1172
1131 /* we are the alternative tail to pp_set_stacklevel */ 1173 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1174 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1175 /* PL_nop = PL_nop->op_next */
1137 1176
1138 /* inject a fake subroutine call to cctx_init */ 1177 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1178 cctx_prepare (aTHX);
1140 1179
1141 /* cctx_run is the alternative tail of transfer() */ 1180 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1181 transfer_tail (aTHX);
1143 1182
1144 /* 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 */
1145 PL_restartop = PL_op; 1184 PL_restartop = PL_op;
1146 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 */
1147 1190
1148 /* 1191 /*
1149 * 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
1150 * 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)
1151 * 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
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1195 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * 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.
1154 */ 1199 */
1155 PL_top_env = main_top_env; 1200 PL_top_env = main_top_env;
1156 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 */
1157 } 1202 }
1158} 1203}
… …
1235cctx_destroy (coro_cctx *cctx) 1280cctx_destroy (coro_cctx *cctx)
1236{ 1281{
1237 if (!cctx) 1282 if (!cctx)
1238 return; 1283 return;
1239 1284
1285 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1286
1240 --cctx_count; 1287 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1288 coro_destroy (&cctx->cctx);
1242 1289
1243 /* coro_transfer creates new, empty cctx's */ 1290 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr) 1291 if (cctx->sptr)
… …
1302/** coroutine switching *****************************************************/ 1349/** coroutine switching *****************************************************/
1303 1350
1304static void 1351static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1352transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1353{
1354 /* TODO: throwing up here is considered harmful */
1355
1307 if (expect_true (prev != next)) 1356 if (expect_true (prev != next))
1308 { 1357 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1358 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 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,");
1311 1360
1312 if (expect_false (next->flags & CF_RUNNING)) 1361 if (expect_false (next->flags & CF_RUNNING))
1313 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,");
1314 1363
1315 if (expect_false (next->flags & CF_DESTROYED)) 1364 if (expect_false (next->flags & CF_DESTROYED))
1316 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,");
1317 1366
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1367#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1368 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 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,");
1321#endif 1370#endif
1322 } 1371 }
1323} 1372}
1324 1373
1325/* always use the TRANSFER macro */ 1374/* always use the TRANSFER macro */
1326static void NOINLINE 1375static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1376transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1377{
1329 dSTACKLEVEL; 1378 dSTACKLEVEL;
1330 1379
1331 /* sometimes transfer is only called to set idle_sp */ 1380 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1381 if (expect_false (!prev))
1333 { 1382 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1383 cctx_current->idle_sp = STACKLEVEL;
1335 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 */
1336 } 1385 }
1337 else if (expect_true (prev != next)) 1386 else if (expect_true (prev != next))
1338 { 1387 {
1339 coro_cctx *prev__cctx; 1388 coro_cctx *cctx_prev;
1340 1389
1341 if (expect_false (prev->flags & CF_NEW)) 1390 if (expect_false (prev->flags & CF_NEW))
1342 { 1391 {
1343 /* create a new empty/source context */ 1392 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1393 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1394 prev->flags |= CF_RUNNING;
1347 } 1395 }
1348 1396
1349 prev->flags &= ~CF_RUNNING; 1397 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1398 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1399
1354 /* first get rid of the old state */ 1400 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1401 save_perl (aTHX_ prev);
1356 1402
1357 if (expect_false (next->flags & CF_NEW)) 1403 if (expect_false (next->flags & CF_NEW))
… …
1362 coro_setup (aTHX_ next); 1408 coro_setup (aTHX_ next);
1363 } 1409 }
1364 else 1410 else
1365 load_perl (aTHX_ next); 1411 load_perl (aTHX_ next);
1366 1412
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1413 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1414 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1415 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1416 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1417 && !force_cctx
1374 )) 1418 ))
1375 { 1419 {
1376 /* 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 */
1377 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));
1378 1422
1379 prev->cctx = 0;
1380
1381 /* 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. */
1382 /* 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 */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1425 if (expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1426 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1427 next->cctx = cctx_get (aTHX);
1386 1428
1387 cctx_put (prev__cctx); 1429 cctx_put (cctx_current);
1388 } 1430 }
1431 else
1432 prev->cctx = cctx_current;
1389 1433
1390 ++next->usecount; 1434 ++next->usecount;
1391 1435
1392 if (expect_true (!next->cctx)) 1436 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1437 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1438
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1439 next->cctx = 0;
1396 transfer_next = next;
1397 1440
1398 if (expect_false (prev__cctx != next->cctx)) 1441 if (expect_false (cctx_prev != cctx_current))
1399 { 1442 {
1400 prev__cctx->top_env = PL_top_env; 1443 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1444 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1445 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1446 }
1404 1447
1405 transfer_tail (aTHX); 1448 transfer_tail (aTHX);
1406 } 1449 }
1407} 1450}
… …
1414static int 1457static int
1415coro_state_destroy (pTHX_ struct coro *coro) 1458coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1459{
1417 if (coro->flags & CF_DESTROYED) 1460 if (coro->flags & CF_DESTROYED)
1418 return 0; 1461 return 0;
1462
1463 if (coro->on_destroy)
1464 coro->on_destroy (aTHX_ coro);
1419 1465
1420 coro->flags |= CF_DESTROYED; 1466 coro->flags |= CF_DESTROYED;
1421 1467
1422 if (coro->flags & CF_READY) 1468 if (coro->flags & CF_READY)
1423 { 1469 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1470 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1471 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1472 --coro_nready;
1428 UNLOCK;
1429 } 1473 }
1430 else 1474 else
1431 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 */
1432 1476
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1477 if (coro->mainstack
1478 && coro->mainstack != main_mainstack
1479 && coro->slot
1480 && !PL_dirty)
1434 { 1481 {
1435 struct coro temp; 1482 struct coro temp;
1436 1483
1437 if (coro->flags & CF_RUNNING) 1484 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1485
1440 save_perl (aTHX_ &temp); 1486 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1487 load_perl (aTHX_ coro);
1442 1488
1443 coro_destruct (aTHX_ coro); 1489 coro_destruct_perl (aTHX_ coro);
1444 1490
1445 load_perl (aTHX_ &temp); 1491 load_perl (aTHX_ &temp);
1446 1492
1447 coro->slot = 0; 1493 coro->slot = 0;
1448 } 1494 }
1449 1495
1450 cctx_destroy (coro->cctx); 1496 cctx_destroy (coro->cctx);
1497 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1498 SvREFCNT_dec (coro->args);
1499 SvREFCNT_dec (CORO_THROW);
1452 1500
1453 if (coro->next) coro->next->prev = coro->prev; 1501 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1502 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1503 if (coro == coro_first) coro_first = coro->next;
1456 1504
… …
1494# define MGf_DUP 0 1542# define MGf_DUP 0
1495#endif 1543#endif
1496}; 1544};
1497 1545
1498static void 1546static void
1499prepare_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)
1500{ 1548{
1501 ta->prev = SvSTATE (prev_sv); 1549 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1550 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1551 TRANSFER_CHECK (*ta);
1504} 1552}
1505 1553
1506static void 1554static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1555api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1556{
1509 dTHX;
1510 struct transfer_args ta; 1557 struct coro_transfer_args ta;
1511 1558
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1559 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1560 TRANSFER (ta, 1);
1514} 1561}
1515 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
1516/** Coro ********************************************************************/ 1586/** Coro ********************************************************************/
1517 1587
1518static void 1588INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1589coro_enq (pTHX_ struct coro *coro)
1520{ 1590{
1521 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));
1522} 1592}
1523 1593
1524static SV * 1594INLINE SV *
1525coro_deq (pTHX) 1595coro_deq (pTHX)
1526{ 1596{
1527 int prio; 1597 int prio;
1528 1598
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1599 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1602
1533 return 0; 1603 return 0;
1534} 1604}
1535 1605
1536static int 1606static int
1537api_ready (SV *coro_sv) 1607api_ready (pTHX_ SV *coro_sv)
1538{ 1608{
1539 dTHX;
1540 struct coro *coro; 1609 struct coro *coro;
1541 SV *sv_hook; 1610 SV *sv_hook;
1542 void (*xs_hook)(void); 1611 void (*xs_hook)(void);
1543 1612
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1613 coro = SvSTATE (coro_sv);
1548 1614
1549 if (coro->flags & CF_READY) 1615 if (coro->flags & CF_READY)
1550 return 0; 1616 return 0;
1551 1617
1552 coro->flags |= CF_READY; 1618 coro->flags |= CF_READY;
1553 1619
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1620 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1621 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1622
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1623 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1624 ++coro_nready;
1561 1625
1562 UNLOCK;
1563
1564 if (sv_hook) 1626 if (sv_hook)
1565 { 1627 {
1566 dSP; 1628 dSP;
1567 1629
1568 ENTER; 1630 ENTER;
1569 SAVETMPS; 1631 SAVETMPS;
1570 1632
1571 PUSHMARK (SP); 1633 PUSHMARK (SP);
1572 PUTBACK; 1634 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1635 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1636
1576 FREETMPS; 1637 FREETMPS;
1577 LEAVE; 1638 LEAVE;
1578 } 1639 }
1579 1640
… …
1582 1643
1583 return 1; 1644 return 1;
1584} 1645}
1585 1646
1586static int 1647static int
1587api_is_ready (SV *coro_sv) 1648api_is_ready (pTHX_ SV *coro_sv)
1588{ 1649{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1650 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1651}
1593 1652
1653/* expects to own a reference to next->hv */
1594INLINE void 1654INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1655prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1656{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1657 SV *prev_sv = SvRV (coro_current);
1658
1641 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1660 ta->next = next;
1661
1642 TRANSFER_CHECK (*ta); 1662 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1663
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1664 SvRV_set (coro_current, (SV *)next->hv);
1646 1665
1647 LOCK;
1648 free_coro_mortal (aTHX); 1666 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1667 coro_mortal = prev_sv;
1650 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 }
1651} 1719}
1652 1720
1653INLINE void 1721INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1722prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1723{
1656 api_ready (coro_current); 1724 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1725 prepare_schedule (aTHX_ ta);
1658} 1726}
1659 1727
1728INLINE void
1729prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1730{
1731 SV *prev = SvRV (coro_current);
1732
1733 if (coro_nready)
1734 {
1735 prepare_schedule (aTHX_ ta);
1736 api_ready (aTHX_ prev);
1737 }
1738 else
1739 prepare_nop (aTHX_ ta);
1740}
1741
1742static void
1743api_schedule (pTHX)
1744{
1745 struct coro_transfer_args ta;
1746
1747 prepare_schedule (aTHX_ &ta);
1748 TRANSFER (ta, 1);
1749}
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
1660static int 1761static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1762api_cede (pTHX)
1662{ 1763{
1663 if (coro_nready) 1764 struct coro_transfer_args ta;
1664 { 1765
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 1766 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 1767
1768 if (expect_true (ta.prev != ta.next))
1769 {
1770 TRANSFER (ta, 1);
1668 return 1; 1771 return 1;
1669 } 1772 }
1670 else 1773 else
1671 return 0; 1774 return 0;
1672} 1775}
1673 1776
1674static void
1675api_schedule (void)
1676{
1677 dTHX;
1678 struct transfer_args ta;
1679
1680 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1);
1682}
1683
1684static int 1777static int
1685api_cede (void) 1778api_cede_notself (pTHX)
1686{ 1779{
1687 dTHX; 1780 if (coro_nready)
1781 {
1688 struct transfer_args ta; 1782 struct coro_transfer_args ta;
1689 1783
1690 prepare_cede (aTHX_ &ta); 1784 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 1785 TRANSFER (ta, 1);
1695 return 1; 1786 return 1;
1696 } 1787 }
1697 else 1788 else
1698 return 0; 1789 return 0;
1699} 1790}
1700 1791
1701static int 1792static void
1702api_cede_notself (void)
1703{
1704 dTHX;
1705 struct transfer_args ta;
1706
1707 if (prepare_cede_notself (aTHX_ &ta))
1708 {
1709 TRANSFER (ta, 1);
1710 return 1;
1711 }
1712 else
1713 return 0;
1714}
1715
1716static void
1717api_trace (SV *coro_sv, int flags) 1793api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 1794{
1719 dTHX;
1720 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");
1721 1799
1722 if (flags & CC_TRACE) 1800 if (flags & CC_TRACE)
1723 { 1801 {
1724 if (!coro->cctx) 1802 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 1803 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 1804 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 1805 croak ("cannot enable tracing on coroutine with custom stack, caught");
1728 1806
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1807 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 1808 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1809 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 1810 {
… …
1737 else 1815 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 1816 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 1817 }
1740} 1818}
1741 1819
1742#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
1743static int 1880static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1881slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1745{ 1882{
1746 AV *padlist; 1883 HV *hv = (HV *)SvRV (coro_current);
1747 AV *av = (AV *)mg->mg_obj; 1884 struct coro *coro = (struct coro *)frame->data;
1748 1885
1749 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 }
1750 2009
1751 return 0; 2010 return 0;
1752} 2011}
1753 2012
1754static MGVTBL coro_gensub_vtbl = { 2013static void
1755 0, 0, 0, 0, 2014slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 2015{
1757}; 2016 SV *cb;
1758#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}
1759 2304
1760/*****************************************************************************/ 2305/*****************************************************************************/
1761/* PerlIO::cede */ 2306/* PerlIO::cede */
1762 2307
1763typedef struct 2308typedef struct
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2336 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 2337 double now = nvtime ();
1793 2338
1794 if (now >= self->next) 2339 if (now >= self->next)
1795 { 2340 {
1796 api_cede (); 2341 api_cede (aTHX);
1797 self->next = now + self->every; 2342 self->next = now + self->every;
1798 } 2343 }
1799 2344
1800 return PerlIOBuf_flush (aTHX_ f); 2345 return PerlIOBuf_flush (aTHX_ f);
1801} 2346}
… …
1831 PerlIOBuf_get_cnt, 2376 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 2377 PerlIOBuf_set_ptrcnt,
1833}; 2378};
1834 2379
1835/*****************************************************************************/ 2380/*****************************************************************************/
2381/* Coro::Semaphore & Coro::Signal */
1836 2382
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP * 2383static SV *
1847pp_restore (pTHX) 2384coro_waitarray_new (pTHX_ int count)
1848{ 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 {
1849 dSP; 2694 dSP;
2695 int i;
1850 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
1851 PUSHMARK (SP); 2745 PUSHMARK (SP);
1852 2746
1853 EXTEND (SP, 3); 2747 /* first push all args to the stack */
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2748 EXTEND (SP, items + 1);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 2749
1858 RETURNOP (ssl_restore.op_first); 2750 for (i = 0; i < items; ++i)
1859} 2751 PUSHs (arg [i]);
1860 2752
1861/* declare prototype */ 2753 /* now push the callback closure */
1862XS(XS_Coro__State__set_stacklevel); 2754 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2755
1864#define OPpENTERSUB_SSL 15 2756 /* now call the AIO function - we assume our request is uncancelable */
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK; 2757 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 2758 call_sv ((SV *)req, G_VOID | G_DISCARD);
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 } 2759 }
1918 2760
1919 TRANSFER (ta, 0); 2761 /* now that the requets is going, we loop toll we have a result */
1920 SPAGAIN; 2762 frame->data = (void *)state;
1921 2763 frame->prepare = prepare_schedule;
1922skip: 2764 frame->check = slf_check_aio_req;
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 2765}
2766
2767static void
2768coro_aio_req_xs (pTHX_ CV *cv)
2769{
2770 dXSARGS;
2771
2772 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2773
2774 XSRETURN_EMPTY;
2775}
2776
2777/*****************************************************************************/
2778
2779#if CORO_CLONE
2780# include "clone.c"
2781#endif
1928 2782
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2783MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 2784
1931PROTOTYPES: DISABLE 2785PROTOTYPES: DISABLE
1932 2786
1933# these not obviously related functions are all rolled into the same xs
1934# function to increase chances that they all will call transfer with the same
1935# stack offset
1936void
1937_set_stacklevel (...)
1938 ALIAS:
1939 Coro::State::transfer = 1
1940 Coro::schedule = 2
1941 Coro::cede = 3
1942 Coro::cede_notself = 4
1943 CODE:
1944{
1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT: 2787BOOT:
1967{ 2788{
1968#ifdef USE_ITHREADS 2789#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 2790# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 2791 coro_thx = PERL_GET_CONTEXT;
1972# endif 2792# endif
1973#endif 2793#endif
1974 BOOT_PAGESIZE; 2794 BOOT_PAGESIZE;
2795
2796 cctx_current = cctx_new_empty ();
1975 2797
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2798 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2799 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978 2800
1979 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;
… …
1995 main_top_env = PL_top_env; 2817 main_top_env = PL_top_env;
1996 2818
1997 while (main_top_env->je_prev) 2819 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 2820 main_top_env = main_top_env->je_prev;
1999 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
2000 coroapi.ver = CORO_API_VERSION; 2832 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION; 2833 coroapi.rev = CORO_API_REVISION;
2834
2002 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;
2003 2843
2004 { 2844 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2845 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006 2846
2007 if (!svp) croak ("Time::HiRes is required"); 2847 if (!svp) croak ("Time::HiRes is required");
… …
2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2853 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2014} 2854}
2015 2855
2016SV * 2856SV *
2017new (char *klass, ...) 2857new (char *klass, ...)
2858 ALIAS:
2859 Coro::new = 1
2018 CODE: 2860 CODE:
2019{ 2861{
2020 struct coro *coro; 2862 struct coro *coro;
2021 MAGIC *mg; 2863 MAGIC *mg;
2022 HV *hv; 2864 HV *hv;
2865 CV *cb;
2023 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 }
2024 2881
2025 Newz (0, coro, 1, struct coro); 2882 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV (); 2883 coro->args = newAV ();
2027 coro->flags = CF_NEW; 2884 coro->flags = CF_NEW;
2028 2885
… …
2033 coro->hv = hv = newHV (); 2890 coro->hv = hv = newHV ();
2034 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);
2035 mg->mg_flags |= MGf_DUP; 2892 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2893 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037 2894
2895 if (items > 1)
2896 {
2038 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
2039 for (i = 1; i < items; i++) 2907 for (i = 2; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i))); 2908 av_push (coro->args, newSVsv (ST (i)));
2909 }
2041} 2910}
2042 OUTPUT: 2911 OUTPUT:
2043 RETVAL 2912 RETVAL
2913
2914void
2915transfer (...)
2916 PROTOTYPE: $$
2917 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2044 2919
2045bool 2920bool
2046_destroy (SV *coro_sv) 2921_destroy (SV *coro_sv)
2047 CODE: 2922 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2923 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2053_exit (int code) 2928_exit (int code)
2054 PROTOTYPE: $ 2929 PROTOTYPE: $
2055 CODE: 2930 CODE:
2056 _exit (code); 2931 _exit (code);
2057 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
2058int 2952int
2059cctx_stacksize (int new_stacksize = 0) 2953cctx_stacksize (int new_stacksize = 0)
2954 PROTOTYPE: ;$
2060 CODE: 2955 CODE:
2061 RETVAL = cctx_stacksize; 2956 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 2957 if (new_stacksize)
2063 { 2958 {
2064 cctx_stacksize = new_stacksize; 2959 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 2962 OUTPUT:
2068 RETVAL 2963 RETVAL
2069 2964
2070int 2965int
2071cctx_max_idle (int max_idle = 0) 2966cctx_max_idle (int max_idle = 0)
2967 PROTOTYPE: ;$
2072 CODE: 2968 CODE:
2073 RETVAL = cctx_max_idle; 2969 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 2970 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 2971 cctx_max_idle = max_idle;
2076 OUTPUT: 2972 OUTPUT:
2077 RETVAL 2973 RETVAL
2078 2974
2079int 2975int
2080cctx_count () 2976cctx_count ()
2977 PROTOTYPE:
2081 CODE: 2978 CODE:
2082 RETVAL = cctx_count; 2979 RETVAL = cctx_count;
2083 OUTPUT: 2980 OUTPUT:
2084 RETVAL 2981 RETVAL
2085 2982
2086int 2983int
2087cctx_idle () 2984cctx_idle ()
2985 PROTOTYPE:
2088 CODE: 2986 CODE:
2089 RETVAL = cctx_idle; 2987 RETVAL = cctx_idle;
2090 OUTPUT: 2988 OUTPUT:
2091 RETVAL 2989 RETVAL
2092 2990
2093void 2991void
2094list () 2992list ()
2993 PROTOTYPE:
2095 PPCODE: 2994 PPCODE:
2096{ 2995{
2097 struct coro *coro; 2996 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 2997 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 2998 if (coro->hv)
… …
2161 3060
2162void 3061void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 3062throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$ 3063 PROTOTYPE: $;$
2165 CODE: 3064 CODE:
3065{
3066 struct coro *current = SvSTATE_current;
3067 SV **throwp = self == current ? &CORO_THROW : &self->except;
2166 SvREFCNT_dec (self->throw); 3068 SvREFCNT_dec (*throwp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3069 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3070}
2168 3071
2169void 3072void
2170api_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
2171 3076
2172SV * 3077SV *
2173has_cctx (Coro::State coro) 3078has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 3079 PROTOTYPE: $
2175 CODE: 3080 CODE:
2176 RETVAL = boolSV (!!coro->cctx); 3081 /* maybe manage the running flag differently */
3082 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2177 OUTPUT: 3083 OUTPUT:
2178 RETVAL 3084 RETVAL
2179 3085
2180int 3086int
2181is_traced (Coro::State coro) 3087is_traced (Coro::State coro)
… …
2199 OUTPUT: 3105 OUTPUT:
2200 RETVAL 3106 RETVAL
2201 3107
2202void 3108void
2203force_cctx () 3109force_cctx ()
3110 PROTOTYPE:
2204 CODE: 3111 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 3112 cctx_current->idle_sp = 0;
2207 3113
2208void 3114void
2209swap_defsv (Coro::State self) 3115swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 3116 PROTOTYPE: $
2211 ALIAS: 3117 ALIAS:
2212 swap_defav = 1 3118 swap_defav = 1
2213 CODE: 3119 CODE:
2214 if (!self->slot) 3120 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 3121 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 3122 else
2217 { 3123 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3124 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3125 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 3126
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 3127 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 3128 }
2223 3129
3130
2224MODULE = Coro::State PACKAGE = Coro 3131MODULE = Coro::State PACKAGE = Coro
2225 3132
2226BOOT: 3133BOOT:
2227{ 3134{
2228 int i; 3135 int i;
2229 3136
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3137 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3138 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 3139 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3140 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3141 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2235 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);
2236 3151
2237 coro_stash = gv_stashpv ("Coro", TRUE); 3152 coro_stash = gv_stashpv ("Coro", TRUE);
2238 3153
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3154 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3155 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2248 3163
2249 { 3164 {
2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3165 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2251 3166
2252 coroapi.schedule = api_schedule; 3167 coroapi.schedule = api_schedule;
3168 coroapi.schedule_to = api_schedule_to;
2253 coroapi.cede = api_cede; 3169 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 3170 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 3171 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 3172 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 3173 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 3174 coroapi.current = coro_current;
2259 3175
2260 GCoroAPI = &coroapi; 3176 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 3177 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv); 3178 SvREADONLY_on (sv);
2263 } 3179 }
2264} 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);
2265 3217
2266void 3218void
2267_set_current (SV *current) 3219_set_current (SV *current)
2268 PROTOTYPE: $ 3220 PROTOTYPE: $
2269 CODE: 3221 CODE:
… …
2272 3224
2273void 3225void
2274_set_readyhook (SV *hook) 3226_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 3227 PROTOTYPE: $
2276 CODE: 3228 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 3229 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3230 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281 3231
2282int 3232int
2283prio (Coro::State coro, int newprio = 0) 3233prio (Coro::State coro, int newprio = 0)
3234 PROTOTYPE: $;$
2284 ALIAS: 3235 ALIAS:
2285 nice = 1 3236 nice = 1
2286 CODE: 3237 CODE:
2287{ 3238{
2288 RETVAL = coro->prio; 3239 RETVAL = coro->prio;
… …
2303 3254
2304SV * 3255SV *
2305ready (SV *self) 3256ready (SV *self)
2306 PROTOTYPE: $ 3257 PROTOTYPE: $
2307 CODE: 3258 CODE:
2308 RETVAL = boolSV (api_ready (self)); 3259 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 3260 OUTPUT:
2310 RETVAL 3261 RETVAL
2311 3262
2312int 3263int
2313nready (...) 3264nready (...)
… …
2315 CODE: 3266 CODE:
2316 RETVAL = coro_nready; 3267 RETVAL = coro_nready;
2317 OUTPUT: 3268 OUTPUT:
2318 RETVAL 3269 RETVAL
2319 3270
2320# for async_pool speedup
2321void 3271void
2322_pool_1 (SV *cb) 3272_pool_handler (...)
2323 CODE: 3273 CODE:
2324{ 3274 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current);
2327 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av;
2330 int i, len;
2331 3275
2332 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)
2333 { 3291 {
2334 SV *old = PL_diehook; 3292 PUSHMARK (SP);
2335 PL_diehook = 0; 3293 EXTEND (SP, 2);
2336 SvREFCNT_dec (old); 3294 PUSHs (sv_Coro);
2337 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));
2338 } 3301 }
2339 3302
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2342
2343 hv_store (hv, "desc", sizeof ("desc") - 1,
2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2345
2346 invoke_av = (AV *)SvRV (invoke);
2347 len = av_len (invoke_av);
2348
2349 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2350
2351 if (len > 0)
2352 { 3303 {
2353 av_fill (defav, len - 1); 3304 struct coro *coro = SvSTATE_hv (hv);
2354 for (i = 0; i < len; ++i) 3305
2355 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;
2356 } 3310 }
2357 3311
3312 api_ready (aTHX_ (SV *)hv);
3313
3314 if (GIMME_V != G_VOID)
3315 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3316 else
2358 SvREFCNT_dec (invoke); 3317 SvREFCNT_dec (hv);
2359} 3318}
2360 3319
2361void 3320SV *
2362_pool_2 (SV *cb) 3321rouse_cb ()
3322 PROTOTYPE:
2363 CODE: 3323 CODE:
2364{ 3324 RETVAL = coro_new_rouse_cb (aTHX);
2365 struct coro *coro = SvSTATE (coro_current);
2366
2367 sv_setsv (cb, &PL_sv_undef);
2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n");
2379 }
2380
2381 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384
2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
2390 av_push (av_async_pool, newSVsv (coro_current));
2391}
2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT: 3325 OUTPUT:
2437 RETVAL 3326 RETVAL
2438 3327
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 3328void
2445_get_state (SV *self) 3329rouse_wait (...)
3330 PROTOTYPE: ;$
2446 PPCODE: 3331 PPCODE:
2447{ 3332 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2448 AV *defav = GvAV (PL_defgv);
2449 AV *av = newAV ();
2450 int i;
2451 SV *data_sv = newSV (sizeof (struct io_state));
2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2453 SvCUR_set (data_sv, sizeof (struct io_state));
2454 SvPOK_only (data_sv);
2455 3333
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460 3334
2461 av_extend (av, AvFILLp (defav) + 1 + 1); 3335MODULE = Coro::State PACKAGE = PerlIO::cede
2462 3336
2463 for (i = 0; i <= AvFILLp (defav); ++i) 3337BOOT:
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3338 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2465 3339
2466 av_push (av, data_sv);
2467 3340
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3341MODULE = Coro::State PACKAGE = Coro::Semaphore
2469 3342
2470 api_ready (self); 3343SV *
2471} 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
2472 3367
2473void 3368void
2474_set_state (SV *state) 3369up (SV *self, int adjust = 1)
2475 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)
2476 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:
2477{ 3441{
2478 AV *av = (AV *)SvRV (state); 3442 AV *av = (AV *)SvRV (self);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3443 coro_signal_wake (aTHX_ av, AvFILLp (av));
2480 int i; 3444}
2481 3445
2482 errno = data->errorno; 3446void
2483 PL_laststype = data->laststype; 3447send (SV *self)
2484 PL_laststatval = data->laststatval; 3448 CODE:
2485 PL_statcache = data->statcache; 3449{
3450 AV *av = (AV *)SvRV (self);
2486 3451
2487 EXTEND (SP, AvFILLp (av)); 3452 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 3453 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3454 else
3455 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 3456}
3457
3458IV
3459awaited (SV *self)
3460 CODE:
3461 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3462 OUTPUT:
3463 RETVAL
2491 3464
2492 3465
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 3466MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 3467
2495BOOT: 3468BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3469 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 3470
2498SV * 3471void
2499_schedule (...) 3472_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 3473 CODE:
2502{ 3474{
2503 static int incede; 3475 static int incede;
2504 3476
2505 api_cede_notself (); 3477 api_cede_notself (aTHX);
2506 3478
2507 ++incede; 3479 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 3480 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 3481 ;
2510 3482
2511 sv_setsv (sv_activity, &PL_sv_undef); 3483 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 3484 if (coro_nready >= incede)
2513 { 3485 {
2514 PUSHMARK (SP); 3486 PUSHMARK (SP);
2515 PUTBACK; 3487 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3488 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 3489 }
2519 3490
2520 --incede; 3491 --incede;
2521} 3492}
2522 3493
2523 3494
2524MODULE = Coro::State PACKAGE = PerlIO::cede 3495MODULE = Coro::State PACKAGE = Coro::AIO
2525 3496
2526BOOT: 3497void
2527 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}
2528 3507

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