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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.337 by root, Fri Dec 5 18:26:10 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 sometimes 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);
… …
831 846
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 848}
834 849
835static void 850static void
851prepare_nop (pTHX_ struct coro_transfer_args *ta)
852{
853 /* kind of mega-hacky, but works */
854 ta->next = ta->prev = (struct coro *)ta;
855}
856
857static int
858slf_check_nop (pTHX_ struct CoroSLF *frame)
859{
860 return 0;
861}
862
863static int
864slf_check_repeat (pTHX_ struct CoroSLF *frame)
865{
866 return 1;
867}
868
869static UNOP coro_setup_op;
870
871static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
837{ 873{
838 /* 874 /*
839 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
840 */ 876 */
… …
842 878
843 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 886 PL_curpm = 0;
848 PL_curpad = 0; 887 PL_curpad = 0;
849 PL_localizing = 0; 888 PL_localizing = 0;
850 PL_dirty = 0; 889 PL_dirty = 0;
851 PL_restartop = 0; 890 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 892 PL_parser = 0;
854#endif 893#endif
894 PL_hints = 0;
855 895
856 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 897 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); 898 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
859 899
860 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 903 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
904 GvHV (PL_hintgv) = 0;
864 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 907
867 { 908 {
868 dSP; 909 dSP;
869 UNOP myop; 910 UNOP myop;
870 911
871 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
874 916
875 PUSHMARK (SP); 917 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 919 PUTBACK;
878 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 922 }
882 923
883 /* this newly created coroutine might be run on an existing cctx which most 924 /* 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, 925 * 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 */ 926 */
887 SSL_HEAD; 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
889 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
890static void 942static void
891coro_destruct (pTHX_ struct coro *coro) 943coro_unwind_stacks (pTHX)
892{ 944{
893 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
894 { 946 {
895 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 956 POPSTACK_TO (PL_mainstack);
905 957
906 /* unwind main stack */ 958 /* unwind main stack */
907 dounwind (-1); 959 dounwind (-1);
908 } 960 }
961}
962
963static void
964coro_destruct_perl (pTHX_ struct coro *coro)
965{
966 coro_unwind_stacks (aTHX);
909 967
910 SvREFCNT_dec (GvSV (PL_defgv)); 968 SvREFCNT_dec (GvSV (PL_defgv));
911 SvREFCNT_dec (GvAV (PL_defgv)); 969 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv)); 970 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv); 971 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs); 972 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv)); 973 SvREFCNT_dec (GvSV (irsgv));
974 SvREFCNT_dec (GvHV (PL_hintgv));
916 975
917 SvREFCNT_dec (PL_diehook); 976 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 977 SvREFCNT_dec (PL_warnhook);
919 978
920 SvREFCNT_dec (coro->saved_deffh); 979 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 980 SvREFCNT_dec (coro->rouse_cb);
981 SvREFCNT_dec (coro->invoke_cb);
982 SvREFCNT_dec (coro->invoke_av);
922 983
923 coro_destruct_stacks (aTHX); 984 coro_destruct_stacks (aTHX);
924} 985}
925 986
926INLINE void 987INLINE void
… …
936static int 997static int
937runops_trace (pTHX) 998runops_trace (pTHX)
938{ 999{
939 COP *oldcop = 0; 1000 COP *oldcop = 0;
940 int oldcxix = -2; 1001 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1002
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1003 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1004 {
946 PERL_ASYNC_CHECK (); 1005 PERL_ASYNC_CHECK ();
947 1006
948 if (cctx->flags & CC_TRACE_ALL) 1007 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1008 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1009 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1010 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1011 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1012 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1013 AV *av = newAV (); /* return values */
955 SV **cb; 1014 SV **cb;
… …
992 1051
993 if (PL_curcop != &PL_compiling) 1052 if (PL_curcop != &PL_compiling)
994 { 1053 {
995 SV **cb; 1054 SV **cb;
996 1055
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1056 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1057 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1058 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1059
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1060 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1061 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1062 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1063 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1064 SV *fullname = sv_2mortal (newSV (0));
1007 1065
1008 if (isGV (gv)) 1066 if (isGV (gv))
… …
1013 SAVETMPS; 1071 SAVETMPS;
1014 EXTEND (SP, 3); 1072 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1073 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1074 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1075 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1076 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1077 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1078 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); 1079 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1080 SPAGAIN;
1023 FREETMPS; 1081 FREETMPS;
… …
1026 } 1084 }
1027 1085
1028 oldcxix = cxstack_ix; 1086 oldcxix = cxstack_ix;
1029 } 1087 }
1030 1088
1031 if (cctx->flags & CC_TRACE_LINE) 1089 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1090 {
1033 dSP; 1091 dSP;
1034 1092
1035 PL_runops = RUNOPS_DEFAULT; 1093 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1094 ENTER;
… …
1055 1113
1056 TAINT_NOT; 1114 TAINT_NOT;
1057 return 0; 1115 return 0;
1058} 1116}
1059 1117
1118static struct CoroSLF cctx_ssl_frame;
1119
1060static void 1120static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1121slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1122{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1123 ta->prev = 0;
1065} 1124}
1066 1125
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1126static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1127slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1128{
1070/* also initialises PL_top_env */ 1129 *frame = cctx_ssl_frame;
1130
1131 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1132}
1133
1134/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1071static void NOINLINE 1135static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1136cctx_prepare (pTHX)
1073{ 1137{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1138 PL_top_env = &PL_start_env;
1078 1139
1079 if (cctx->flags & CC_TRACE) 1140 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1141 PL_runops = runops_trace;
1081 1142
1082 Zero (&myop, 1, UNOP); 1143 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1144 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1145 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1146 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1147
1086 PUSHMARK (SP); 1148 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1149 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1150
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1151 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1152 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1153}
1095 1154
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1155/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1156INLINE void
1098transfer_tail (pTHX) 1157transfer_tail (pTHX)
1099{ 1158{
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); 1159 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} 1160}
1116 1161
1117/* 1162/*
1118 * this is a _very_ stripped down perl interpreter ;) 1163 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1164 */
… …
1126# endif 1171# endif
1127#endif 1172#endif
1128 { 1173 {
1129 dTHX; 1174 dTHX;
1130 1175
1131 /* we are the alternative tail to pp_set_stacklevel */ 1176 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1177 /* 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; 1178 /* PL_nop = PL_nop->op_next */
1137 1179
1138 /* inject a fake subroutine call to cctx_init */ 1180 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1181 cctx_prepare (aTHX);
1140 1182
1141 /* cctx_run is the alternative tail of transfer() */ 1183 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1184 transfer_tail (aTHX);
1143 1185
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1186 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1187 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1188 perl_run (PL_curinterp);
1189 /*
1190 * Unfortunately, there is no way to get at the return values of the
1191 * coro body here, as perl_run destroys these
1192 */
1147 1193
1148 /* 1194 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1195 * 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) 1196 * 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 1197 * 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" 1198 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * coroutine as Coro has no such concept 1199 * coroutine as Coro has no such concept.
1200 * This actually isn't valid with the pthread backend, but OSes requiring
1201 * that backend are too broken to do it in a standards-compliant way.
1154 */ 1202 */
1155 PL_top_env = main_top_env; 1203 PL_top_env = main_top_env;
1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1204 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 } 1205 }
1158} 1206}
… …
1235cctx_destroy (coro_cctx *cctx) 1283cctx_destroy (coro_cctx *cctx)
1236{ 1284{
1237 if (!cctx) 1285 if (!cctx)
1238 return; 1286 return;
1239 1287
1288 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1289
1240 --cctx_count; 1290 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1291 coro_destroy (&cctx->cctx);
1242 1292
1243 /* coro_transfer creates new, empty cctx's */ 1293 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr) 1294 if (cctx->sptr)
… …
1302/** coroutine switching *****************************************************/ 1352/** coroutine switching *****************************************************/
1303 1353
1304static void 1354static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1355transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1356{
1357 /* TODO: throwing up here is considered harmful */
1358
1307 if (expect_true (prev != next)) 1359 if (expect_true (prev != next))
1308 { 1360 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1361 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"); 1362 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1311 1363
1312 if (expect_false (next->flags & CF_RUNNING)) 1364 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"); 1365 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1314 1366
1315 if (expect_false (next->flags & CF_DESTROYED)) 1367 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"); 1368 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1317 1369
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1370#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1371 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"); 1372 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1373#endif
1322 } 1374 }
1323} 1375}
1324 1376
1325/* always use the TRANSFER macro */ 1377/* always use the TRANSFER macro */
1326static void NOINLINE 1378static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1379transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1380{
1329 dSTACKLEVEL; 1381 dSTACKLEVEL;
1330 1382
1331 /* sometimes transfer is only called to set idle_sp */ 1383 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1384 if (expect_false (!prev))
1333 { 1385 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1386 cctx_current->idle_sp = STACKLEVEL;
1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1387 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1336 } 1388 }
1337 else if (expect_true (prev != next)) 1389 else if (expect_true (prev != next))
1338 { 1390 {
1339 coro_cctx *prev__cctx; 1391 coro_cctx *cctx_prev;
1340 1392
1341 if (expect_false (prev->flags & CF_NEW)) 1393 if (expect_false (prev->flags & CF_NEW))
1342 { 1394 {
1343 /* create a new empty/source context */ 1395 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1396 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1397 prev->flags |= CF_RUNNING;
1347 } 1398 }
1348 1399
1349 prev->flags &= ~CF_RUNNING; 1400 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1401 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1402
1354 /* first get rid of the old state */ 1403 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1404 save_perl (aTHX_ prev);
1356 1405
1357 if (expect_false (next->flags & CF_NEW)) 1406 if (expect_false (next->flags & CF_NEW))
… …
1362 coro_setup (aTHX_ next); 1411 coro_setup (aTHX_ next);
1363 } 1412 }
1364 else 1413 else
1365 load_perl (aTHX_ next); 1414 load_perl (aTHX_ next);
1366 1415
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1416 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1417 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1418 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1419 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1420 && !force_cctx
1374 )) 1421 ))
1375 { 1422 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1423 /* 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)); 1424 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1378 1425
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 */ 1426 /* 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 */ 1427 /* without this the next cctx_get might destroy the running cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1428 if (expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1429 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1430 next->cctx = cctx_get (aTHX);
1386 1431
1387 cctx_put (prev__cctx); 1432 cctx_put (cctx_current);
1388 } 1433 }
1434 else
1435 prev->cctx = cctx_current;
1389 1436
1390 ++next->usecount; 1437 ++next->usecount;
1391 1438
1392 if (expect_true (!next->cctx)) 1439 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1440 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1441
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1442 next->cctx = 0;
1396 transfer_next = next;
1397 1443
1398 if (expect_false (prev__cctx != next->cctx)) 1444 if (expect_false (cctx_prev != cctx_current))
1399 { 1445 {
1400 prev__cctx->top_env = PL_top_env; 1446 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1447 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1448 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1449 }
1404 1450
1405 transfer_tail (aTHX); 1451 transfer_tail (aTHX);
1406 } 1452 }
1407} 1453}
… …
1414static int 1460static int
1415coro_state_destroy (pTHX_ struct coro *coro) 1461coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1462{
1417 if (coro->flags & CF_DESTROYED) 1463 if (coro->flags & CF_DESTROYED)
1418 return 0; 1464 return 0;
1465
1466 if (coro->on_destroy)
1467 coro->on_destroy (aTHX_ coro);
1419 1468
1420 coro->flags |= CF_DESTROYED; 1469 coro->flags |= CF_DESTROYED;
1421 1470
1422 if (coro->flags & CF_READY) 1471 if (coro->flags & CF_READY)
1423 { 1472 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1473 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1474 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1475 --coro_nready;
1428 UNLOCK;
1429 } 1476 }
1430 else 1477 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1478 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1479
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1480 if (coro->mainstack
1481 && coro->mainstack != main_mainstack
1482 && coro->slot
1483 && !PL_dirty)
1434 { 1484 {
1435 struct coro temp; 1485 struct coro temp;
1436 1486
1437 if (coro->flags & CF_RUNNING) 1487 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1488
1440 save_perl (aTHX_ &temp); 1489 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1490 load_perl (aTHX_ coro);
1442 1491
1443 coro_destruct (aTHX_ coro); 1492 coro_destruct_perl (aTHX_ coro);
1444 1493
1445 load_perl (aTHX_ &temp); 1494 load_perl (aTHX_ &temp);
1446 1495
1447 coro->slot = 0; 1496 coro->slot = 0;
1448 } 1497 }
1449 1498
1450 cctx_destroy (coro->cctx); 1499 cctx_destroy (coro->cctx);
1500 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1501 SvREFCNT_dec (coro->args);
1502 SvREFCNT_dec (CORO_THROW);
1452 1503
1453 if (coro->next) coro->next->prev = coro->prev; 1504 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1505 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1506 if (coro == coro_first) coro_first = coro->next;
1456 1507
… …
1494# define MGf_DUP 0 1545# define MGf_DUP 0
1495#endif 1546#endif
1496}; 1547};
1497 1548
1498static void 1549static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1550prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1551{
1501 ta->prev = SvSTATE (prev_sv); 1552 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1553 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1554 TRANSFER_CHECK (*ta);
1504} 1555}
1505 1556
1506static void 1557static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1558api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1559{
1509 dTHX;
1510 struct transfer_args ta; 1560 struct coro_transfer_args ta;
1511 1561
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1562 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1563 TRANSFER (ta, 1);
1514} 1564}
1515 1565
1566/*****************************************************************************/
1567/* gensub: simple closure generation utility */
1568
1569#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1570
1571/* create a closure from XS, returns a code reference */
1572/* the arg can be accessed via GENSUB_ARG from the callback */
1573/* the callback must use dXSARGS/XSRETURN */
1574static SV *
1575gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1576{
1577 CV *cv = (CV *)newSV (0);
1578
1579 sv_upgrade ((SV *)cv, SVt_PVCV);
1580
1581 CvANON_on (cv);
1582 CvISXSUB_on (cv);
1583 CvXSUB (cv) = xsub;
1584 GENSUB_ARG = arg;
1585
1586 return newRV_noinc ((SV *)cv);
1587}
1588
1516/** Coro ********************************************************************/ 1589/** Coro ********************************************************************/
1517 1590
1518static void 1591INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1592coro_enq (pTHX_ struct coro *coro)
1520{ 1593{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1594 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1522} 1595}
1523 1596
1524static SV * 1597INLINE SV *
1525coro_deq (pTHX) 1598coro_deq (pTHX)
1526{ 1599{
1527 int prio; 1600 int prio;
1528 1601
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1602 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1605
1533 return 0; 1606 return 0;
1534} 1607}
1535 1608
1536static int 1609static int
1537api_ready (SV *coro_sv) 1610api_ready (pTHX_ SV *coro_sv)
1538{ 1611{
1539 dTHX;
1540 struct coro *coro; 1612 struct coro *coro;
1541 SV *sv_hook; 1613 SV *sv_hook;
1542 void (*xs_hook)(void); 1614 void (*xs_hook)(void);
1543 1615
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1616 coro = SvSTATE (coro_sv);
1548 1617
1549 if (coro->flags & CF_READY) 1618 if (coro->flags & CF_READY)
1550 return 0; 1619 return 0;
1551 1620
1552 coro->flags |= CF_READY; 1621 coro->flags |= CF_READY;
1553 1622
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1623 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1624 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1625
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1626 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1627 ++coro_nready;
1561 1628
1562 UNLOCK;
1563
1564 if (sv_hook) 1629 if (sv_hook)
1565 { 1630 {
1566 dSP; 1631 dSP;
1567 1632
1568 ENTER; 1633 ENTER;
1569 SAVETMPS; 1634 SAVETMPS;
1570 1635
1571 PUSHMARK (SP); 1636 PUSHMARK (SP);
1572 PUTBACK; 1637 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1638 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1639
1576 FREETMPS; 1640 FREETMPS;
1577 LEAVE; 1641 LEAVE;
1578 } 1642 }
1579 1643
… …
1582 1646
1583 return 1; 1647 return 1;
1584} 1648}
1585 1649
1586static int 1650static int
1587api_is_ready (SV *coro_sv) 1651api_is_ready (pTHX_ SV *coro_sv)
1588{ 1652{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1653 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1654}
1593 1655
1656/* expects to own a reference to next->hv */
1594INLINE void 1657INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1658prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1659{
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); 1660 SV *prev_sv = SvRV (coro_current);
1661
1641 ta->prev = SvSTATE (prev_sv); 1662 ta->prev = SvSTATE_hv (prev_sv);
1663 ta->next = next;
1664
1642 TRANSFER_CHECK (*ta); 1665 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1666
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1667 SvRV_set (coro_current, (SV *)next->hv);
1646 1668
1647 LOCK;
1648 free_coro_mortal (aTHX); 1669 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1670 coro_mortal = prev_sv;
1650 UNLOCK; 1671}
1672
1673static void
1674prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1675{
1676 for (;;)
1677 {
1678 SV *next_sv = coro_deq (aTHX);
1679
1680 if (expect_true (next_sv))
1681 {
1682 struct coro *next = SvSTATE_hv (next_sv);
1683
1684 /* cannot transfer to destroyed coros, skip and look for next */
1685 if (expect_false (next->flags & CF_DESTROYED))
1686 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1687 else
1688 {
1689 next->flags &= ~CF_READY;
1690 --coro_nready;
1691
1692 prepare_schedule_to (aTHX_ ta, next);
1693 break;
1694 }
1695 }
1696 else
1697 {
1698 /* nothing to schedule: call the idle handler */
1699 if (SvROK (sv_idle)
1700 && SvOBJECT (SvRV (sv_idle)))
1701 {
1702 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1703 api_ready (aTHX_ SvRV (sv_idle));
1704 --coro_nready;
1705 }
1706 else
1707 {
1708 dSP;
1709
1710 ENTER;
1711 SAVETMPS;
1712
1713 PUSHMARK (SP);
1714 PUTBACK;
1715 call_sv (sv_idle, G_VOID | G_DISCARD);
1716
1717 FREETMPS;
1718 LEAVE;
1719 }
1720 }
1721 }
1651} 1722}
1652 1723
1653INLINE void 1724INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1725prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1726{
1656 api_ready (coro_current); 1727 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1728 prepare_schedule (aTHX_ ta);
1658} 1729}
1659 1730
1660static void 1731INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1732prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1733{
1663 SV *prev = SvRV (coro_current); 1734 SV *prev = SvRV (coro_current);
1664 1735
1665 if (coro_nready) 1736 if (coro_nready)
1666 { 1737 {
1667 prepare_schedule (aTHX_ ta); 1738 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1739 api_ready (aTHX_ prev);
1669 } 1740 }
1670 else 1741 else
1671 ta->prev = ta->next = SvSTATE (prev); 1742 prepare_nop (aTHX_ ta);
1672} 1743}
1673 1744
1674static void 1745static void
1675api_schedule (void) 1746api_schedule (pTHX)
1676{ 1747{
1677 dTHX;
1678 struct transfer_args ta; 1748 struct coro_transfer_args ta;
1679 1749
1680 prepare_schedule (aTHX_ &ta); 1750 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1751 TRANSFER (ta, 1);
1682} 1752}
1683 1753
1754static void
1755api_schedule_to (pTHX_ SV *coro_sv)
1756{
1757 struct coro_transfer_args ta;
1758 struct coro *next = SvSTATE (coro_sv);
1759
1760 SvREFCNT_inc_NN (coro_sv);
1761 prepare_schedule_to (aTHX_ &ta, next);
1762}
1763
1684static int 1764static int
1685api_cede (void) 1765api_cede (pTHX)
1686{ 1766{
1687 dTHX;
1688 struct transfer_args ta; 1767 struct coro_transfer_args ta;
1689 1768
1690 prepare_cede (aTHX_ &ta); 1769 prepare_cede (aTHX_ &ta);
1691 1770
1692 if (expect_true (ta.prev != ta.next)) 1771 if (expect_true (ta.prev != ta.next))
1693 { 1772 {
… …
1697 else 1776 else
1698 return 0; 1777 return 0;
1699} 1778}
1700 1779
1701static int 1780static int
1702api_cede_notself (void) 1781api_cede_notself (pTHX)
1703{ 1782{
1704 if (coro_nready) 1783 if (coro_nready)
1705 { 1784 {
1706 dTHX;
1707 struct transfer_args ta; 1785 struct coro_transfer_args ta;
1708 1786
1709 prepare_cede_notself (aTHX_ &ta); 1787 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1788 TRANSFER (ta, 1);
1711 return 1; 1789 return 1;
1712 } 1790 }
1713 else 1791 else
1714 return 0; 1792 return 0;
1715} 1793}
1716 1794
1717static void 1795static void
1718api_trace (SV *coro_sv, int flags) 1796api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1797{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1798 struct coro *coro = SvSTATE (coro_sv);
1799
1800 if (coro->flags & CF_RUNNING)
1801 croak ("cannot enable tracing on a running coroutine, caught");
1722 1802
1723 if (flags & CC_TRACE) 1803 if (flags & CC_TRACE)
1724 { 1804 {
1725 if (!coro->cctx) 1805 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1806 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1807 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1808 croak ("cannot enable tracing on coroutine with custom stack, caught");
1729 1809
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1810 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1811 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1812 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1813 {
… …
1738 else 1818 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1819 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1820 }
1741} 1821}
1742 1822
1743#if 0 1823static void
1824coro_call_on_destroy (pTHX_ struct coro *coro)
1825{
1826 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1827 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1828
1829 if (on_destroyp)
1830 {
1831 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1832
1833 while (AvFILLp (on_destroy) >= 0)
1834 {
1835 dSP; /* don't disturb outer sp */
1836 SV *cb = av_pop (on_destroy);
1837
1838 PUSHMARK (SP);
1839
1840 if (statusp)
1841 {
1842 int i;
1843 AV *status = (AV *)SvRV (*statusp);
1844 EXTEND (SP, AvFILLp (status) + 1);
1845
1846 for (i = 0; i <= AvFILLp (status); ++i)
1847 PUSHs (AvARRAY (status)[i]);
1848 }
1849
1850 PUTBACK;
1851 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1852 }
1853 }
1854}
1855
1856static void
1857slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1858{
1859 int i;
1860 HV *hv = (HV *)SvRV (coro_current);
1861 AV *av = newAV ();
1862
1863 av_extend (av, items - 1);
1864 for (i = 0; i < items; ++i)
1865 av_push (av, SvREFCNT_inc_NN (arg [i]));
1866
1867 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1868
1869 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1870 api_ready (aTHX_ sv_manager);
1871
1872 frame->prepare = prepare_schedule;
1873 frame->check = slf_check_repeat;
1874
1875 /* as a minor optimisation, we could unwind all stacks here */
1876 /* but that puts extra pressure on pp_slf, and is not worth much */
1877 /*coro_unwind_stacks (aTHX);*/
1878}
1879
1880/*****************************************************************************/
1881/* async pool handler */
1882
1744static int 1883static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1884slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1746{ 1885{
1747 AV *padlist; 1886 HV *hv = (HV *)SvRV (coro_current);
1748 AV *av = (AV *)mg->mg_obj; 1887 struct coro *coro = (struct coro *)frame->data;
1749 1888
1750 abort (); 1889 if (!coro->invoke_cb)
1890 return 1; /* loop till we have invoke */
1891 else
1892 {
1893 hv_store (hv, "desc", sizeof ("desc") - 1,
1894 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1895
1896 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1897
1898 {
1899 dSP;
1900 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1901 PUTBACK;
1902 }
1903
1904 SvREFCNT_dec (GvAV (PL_defgv));
1905 GvAV (PL_defgv) = coro->invoke_av;
1906 coro->invoke_av = 0;
1907
1908 return 0;
1909 }
1910}
1911
1912static void
1913slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1914{
1915 HV *hv = (HV *)SvRV (coro_current);
1916 struct coro *coro = SvSTATE_hv ((SV *)hv);
1917
1918 if (expect_true (coro->saved_deffh))
1919 {
1920 /* subsequent iteration */
1921 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1922 coro->saved_deffh = 0;
1923
1924 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1925 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1926 {
1927 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1928 coro->invoke_av = newAV ();
1929
1930 frame->prepare = prepare_nop;
1931 }
1932 else
1933 {
1934 av_clear (GvAV (PL_defgv));
1935 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1936
1937 coro->prio = 0;
1938
1939 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1940 api_trace (aTHX_ coro_current, 0);
1941
1942 frame->prepare = prepare_schedule;
1943 av_push (av_async_pool, SvREFCNT_inc (hv));
1944 }
1945 }
1946 else
1947 {
1948 /* first iteration, simply fall through */
1949 frame->prepare = prepare_nop;
1950 }
1951
1952 frame->check = slf_check_pool_handler;
1953 frame->data = (void *)coro;
1954}
1955
1956/*****************************************************************************/
1957/* rouse callback */
1958
1959#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1960
1961static void
1962coro_rouse_callback (pTHX_ CV *cv)
1963{
1964 dXSARGS;
1965 SV *data = (SV *)GENSUB_ARG;
1966
1967 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1968 {
1969 /* first call, set args */
1970 AV *av = newAV ();
1971 SV *coro = SvRV (data);
1972
1973 SvRV_set (data, (SV *)av);
1974 api_ready (aTHX_ coro);
1975 SvREFCNT_dec (coro);
1976
1977 /* better take a full copy of the arguments */
1978 while (items--)
1979 av_store (av, items, newSVsv (ST (items)));
1980 }
1981
1982 XSRETURN_EMPTY;
1983}
1984
1985static int
1986slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1987{
1988 SV *data = (SV *)frame->data;
1989
1990 if (CORO_THROW)
1991 return 0;
1992
1993 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1994 return 1;
1995
1996 /* now push all results on the stack */
1997 {
1998 dSP;
1999 AV *av = (AV *)SvRV (data);
2000 int i;
2001
2002 EXTEND (SP, AvFILLp (av) + 1);
2003 for (i = 0; i <= AvFILLp (av); ++i)
2004 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2005
2006 /* we have stolen the elements, so ste length to zero and free */
2007 AvFILLp (av) = -1;
2008 av_undef (av);
2009
2010 PUTBACK;
2011 }
1751 2012
1752 return 0; 2013 return 0;
1753} 2014}
1754 2015
1755static MGVTBL coro_gensub_vtbl = { 2016static void
1756 0, 0, 0, 0, 2017slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 2018{
1758}; 2019 SV *cb;
1759#endif 2020
2021 if (items)
2022 cb = arg [0];
2023 else
2024 {
2025 struct coro *coro = SvSTATE_current;
2026
2027 if (!coro->rouse_cb)
2028 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2029
2030 cb = sv_2mortal (coro->rouse_cb);
2031 coro->rouse_cb = 0;
2032 }
2033
2034 if (!SvROK (cb)
2035 || SvTYPE (SvRV (cb)) != SVt_PVCV
2036 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2037 croak ("Coro::rouse_wait called with illegal callback argument,");
2038
2039 {
2040 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2041 SV *data = (SV *)GENSUB_ARG;
2042
2043 frame->data = (void *)data;
2044 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2045 frame->check = slf_check_rouse_wait;
2046 }
2047}
2048
2049static SV *
2050coro_new_rouse_cb (pTHX)
2051{
2052 HV *hv = (HV *)SvRV (coro_current);
2053 struct coro *coro = SvSTATE_hv (hv);
2054 SV *data = newRV_inc ((SV *)hv);
2055 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2056
2057 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2058 SvREFCNT_dec (data); /* magicext increases the refcount */
2059
2060 SvREFCNT_dec (coro->rouse_cb);
2061 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2062
2063 return cb;
2064}
2065
2066/*****************************************************************************/
2067/* schedule-like-function opcode (SLF) */
2068
2069static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2070static const CV *slf_cv;
2071static SV **slf_argv;
2072static int slf_argc, slf_arga; /* count, allocated */
2073static I32 slf_ax; /* top of stack, for restore */
2074
2075/* this restores the stack in the case we patched the entersub, to */
2076/* recreate the stack frame as perl will on following calls */
2077/* since entersub cleared the stack */
2078static OP *
2079pp_restore (pTHX)
2080{
2081 int i;
2082 SV **SP = PL_stack_base + slf_ax;
2083
2084 PUSHMARK (SP);
2085
2086 EXTEND (SP, slf_argc + 1);
2087
2088 for (i = 0; i < slf_argc; ++i)
2089 PUSHs (sv_2mortal (slf_argv [i]));
2090
2091 PUSHs ((SV *)CvGV (slf_cv));
2092
2093 RETURNOP (slf_restore.op_first);
2094}
2095
2096static void
2097slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2098{
2099 SV **arg = (SV **)slf_frame.data;
2100
2101 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2102}
2103
2104static void
2105slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 if (items != 2)
2108 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2109
2110 frame->prepare = slf_prepare_transfer;
2111 frame->check = slf_check_nop;
2112 frame->data = (void *)arg; /* let's hope it will stay valid */
2113}
2114
2115static void
2116slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2117{
2118 frame->prepare = prepare_schedule;
2119 frame->check = slf_check_nop;
2120}
2121
2122static void
2123slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2124{
2125 struct coro *next = (struct coro *)slf_frame.data;
2126
2127 SvREFCNT_inc_NN (next->hv);
2128 prepare_schedule_to (aTHX_ ta, next);
2129}
2130
2131static void
2132slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 if (!items)
2135 croak ("Coro::schedule_to expects a coroutine argument, caught");
2136
2137 frame->data = (void *)SvSTATE (arg [0]);
2138 frame->prepare = slf_prepare_schedule_to;
2139 frame->check = slf_check_nop;
2140}
2141
2142static void
2143slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2144{
2145 api_ready (aTHX_ SvRV (coro_current));
2146
2147 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2148}
2149
2150static void
2151slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2152{
2153 frame->prepare = prepare_cede;
2154 frame->check = slf_check_nop;
2155}
2156
2157static void
2158slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2159{
2160 frame->prepare = prepare_cede_notself;
2161 frame->check = slf_check_nop;
2162}
2163
2164/*
2165 * these not obviously related functions are all rolled into one
2166 * function to increase chances that they all will call transfer with the same
2167 * stack offset
2168 * SLF stands for "schedule-like-function".
2169 */
2170static OP *
2171pp_slf (pTHX)
2172{
2173 I32 checkmark; /* mark SP to see how many elements check has pushed */
2174
2175 /* set up the slf frame, unless it has already been set-up */
2176 /* the latter happens when a new coro has been started */
2177 /* or when a new cctx was attached to an existing coroutine */
2178 if (expect_true (!slf_frame.prepare))
2179 {
2180 /* first iteration */
2181 dSP;
2182 SV **arg = PL_stack_base + TOPMARK + 1;
2183 int items = SP - arg; /* args without function object */
2184 SV *gv = *sp;
2185
2186 /* do a quick consistency check on the "function" object, and if it isn't */
2187 /* for us, divert to the real entersub */
2188 if (SvTYPE (gv) != SVt_PVGV
2189 || !GvCV (gv)
2190 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2191 return PL_ppaddr[OP_ENTERSUB](aTHX);
2192
2193 if (!(PL_op->op_flags & OPf_STACKED))
2194 {
2195 /* ampersand-form of call, use @_ instead of stack */
2196 AV *av = GvAV (PL_defgv);
2197 arg = AvARRAY (av);
2198 items = AvFILLp (av) + 1;
2199 }
2200
2201 /* now call the init function, which needs to set up slf_frame */
2202 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2203 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2204
2205 /* pop args */
2206 SP = PL_stack_base + POPMARK;
2207
2208 PUTBACK;
2209 }
2210
2211 /* now that we have a slf_frame, interpret it! */
2212 /* we use a callback system not to make the code needlessly */
2213 /* complicated, but so we can run multiple perl coros from one cctx */
2214
2215 do
2216 {
2217 struct coro_transfer_args ta;
2218
2219 slf_frame.prepare (aTHX_ &ta);
2220 TRANSFER (ta, 0);
2221
2222 checkmark = PL_stack_sp - PL_stack_base;
2223 }
2224 while (slf_frame.check (aTHX_ &slf_frame));
2225
2226 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2227
2228 /* exception handling */
2229 if (expect_false (CORO_THROW))
2230 {
2231 SV *exception = sv_2mortal (CORO_THROW);
2232
2233 CORO_THROW = 0;
2234 sv_setsv (ERRSV, exception);
2235 croak (0);
2236 }
2237
2238 /* return value handling - mostly like entersub */
2239 /* make sure we put something on the stack in scalar context */
2240 if (GIMME_V == G_SCALAR)
2241 {
2242 dSP;
2243 SV **bot = PL_stack_base + checkmark;
2244
2245 if (sp == bot) /* too few, push undef */
2246 bot [1] = &PL_sv_undef;
2247 else if (sp != bot + 1) /* too many, take last one */
2248 bot [1] = *sp;
2249
2250 SP = bot + 1;
2251
2252 PUTBACK;
2253 }
2254
2255 return NORMAL;
2256}
2257
2258static void
2259api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2260{
2261 int i;
2262 SV **arg = PL_stack_base + ax;
2263 int items = PL_stack_sp - arg + 1;
2264
2265 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2266
2267 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2268 && PL_op->op_ppaddr != pp_slf)
2269 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2270
2271 CvFLAGS (cv) |= CVf_SLF;
2272 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2273 slf_cv = cv;
2274
2275 /* we patch the op, and then re-run the whole call */
2276 /* we have to put the same argument on the stack for this to work */
2277 /* and this will be done by pp_restore */
2278 slf_restore.op_next = (OP *)&slf_restore;
2279 slf_restore.op_type = OP_CUSTOM;
2280 slf_restore.op_ppaddr = pp_restore;
2281 slf_restore.op_first = PL_op;
2282
2283 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2284
2285 if (PL_op->op_flags & OPf_STACKED)
2286 {
2287 if (items > slf_arga)
2288 {
2289 slf_arga = items;
2290 free (slf_argv);
2291 slf_argv = malloc (slf_arga * sizeof (SV *));
2292 }
2293
2294 slf_argc = items;
2295
2296 for (i = 0; i < items; ++i)
2297 slf_argv [i] = SvREFCNT_inc (arg [i]);
2298 }
2299 else
2300 slf_argc = 0;
2301
2302 PL_op->op_ppaddr = pp_slf;
2303 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2304
2305 PL_op = (OP *)&slf_restore;
2306}
1760 2307
1761/*****************************************************************************/ 2308/*****************************************************************************/
1762/* PerlIO::cede */ 2309/* PerlIO::cede */
1763 2310
1764typedef struct 2311typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2339 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2340 double now = nvtime ();
1794 2341
1795 if (now >= self->next) 2342 if (now >= self->next)
1796 { 2343 {
1797 api_cede (); 2344 api_cede (aTHX);
1798 self->next = now + self->every; 2345 self->next = now + self->every;
1799 } 2346 }
1800 2347
1801 return PerlIOBuf_flush (aTHX_ f); 2348 return PerlIOBuf_flush (aTHX_ f);
1802} 2349}
… …
1832 PerlIOBuf_get_cnt, 2379 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2380 PerlIOBuf_set_ptrcnt,
1834}; 2381};
1835 2382
1836/*****************************************************************************/ 2383/*****************************************************************************/
2384/* Coro::Semaphore & Coro::Signal */
1837 2385
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2386static SV *
1848pp_restore (pTHX) 2387coro_waitarray_new (pTHX_ int count)
1849{ 2388{
2389 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2390 AV *av = newAV ();
2391 SV **ary;
2392
2393 /* unfortunately, building manually saves memory */
2394 Newx (ary, 2, SV *);
2395 AvALLOC (av) = ary;
2396#if PERL_VERSION_ATLEAST (5,10,0)
2397 AvARRAY (av) = ary;
2398#else
2399 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2400 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2401 SvPVX ((SV *)av) = (char *)ary;
2402#endif
2403 AvMAX (av) = 1;
2404 AvFILLp (av) = 0;
2405 ary [0] = newSViv (count);
2406
2407 return newRV_noinc ((SV *)av);
2408}
2409
2410/* semaphore */
2411
2412static void
2413coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2414{
2415 SV *count_sv = AvARRAY (av)[0];
2416 IV count = SvIVX (count_sv);
2417
2418 count += adjust;
2419 SvIVX (count_sv) = count;
2420
2421 /* now wake up as many waiters as are expected to lock */
2422 while (count > 0 && AvFILLp (av) > 0)
2423 {
2424 SV *cb;
2425
2426 /* swap first two elements so we can shift a waiter */
2427 AvARRAY (av)[0] = AvARRAY (av)[1];
2428 AvARRAY (av)[1] = count_sv;
2429 cb = av_shift (av);
2430
2431 if (SvOBJECT (cb))
2432 {
2433 api_ready (aTHX_ cb);
2434 --count;
2435 }
2436 else if (SvTYPE (cb) == SVt_PVCV)
2437 {
2438 dSP;
2439 PUSHMARK (SP);
2440 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2441 PUTBACK;
2442 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2443 }
2444
2445 SvREFCNT_dec (cb);
2446 }
2447}
2448
2449static void
2450coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2451{
2452 /* call $sem->adjust (0) to possibly wake up some other waiters */
2453 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2454}
2455
2456static int
2457slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2458{
2459 AV *av = (AV *)frame->data;
2460 SV *count_sv = AvARRAY (av)[0];
2461
2462 /* if we are about to throw, don't actually acquire the lock, just throw */
2463 if (CORO_THROW)
2464 return 0;
2465 else if (SvIVX (count_sv) > 0)
2466 {
2467 SvSTATE_current->on_destroy = 0;
2468
2469 if (acquire)
2470 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2471 else
2472 coro_semaphore_adjust (aTHX_ av, 0);
2473
2474 return 0;
2475 }
2476 else
2477 {
2478 int i;
2479 /* if we were woken up but can't down, we look through the whole */
2480 /* waiters list and only add us if we aren't in there already */
2481 /* this avoids some degenerate memory usage cases */
2482
2483 for (i = 1; i <= AvFILLp (av); ++i)
2484 if (AvARRAY (av)[i] == SvRV (coro_current))
2485 return 1;
2486
2487 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2488 return 1;
2489 }
2490}
2491
2492static int
2493slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2494{
2495 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2496}
2497
2498static int
2499slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2500{
2501 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2502}
2503
2504static void
2505slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2506{
2507 AV *av = (AV *)SvRV (arg [0]);
2508
2509 if (SvIVX (AvARRAY (av)[0]) > 0)
2510 {
2511 frame->data = (void *)av;
2512 frame->prepare = prepare_nop;
2513 }
2514 else
2515 {
2516 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2517
2518 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2519 frame->prepare = prepare_schedule;
2520
2521 /* to avoid race conditions when a woken-up coro gets terminated */
2522 /* we arrange for a temporary on_destroy that calls adjust (0) */
2523 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2524 }
2525}
2526
2527static void
2528slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2529{
2530 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2531 frame->check = slf_check_semaphore_down;
2532}
2533
2534static void
2535slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2536{
2537 if (items >= 2)
2538 {
2539 /* callback form */
2540 AV *av = (AV *)SvRV (arg [0]);
2541 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2542
2543 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2544
2545 if (SvIVX (AvARRAY (av)[0]) > 0)
2546 coro_semaphore_adjust (aTHX_ av, 0);
2547
2548 frame->prepare = prepare_nop;
2549 frame->check = slf_check_nop;
2550 }
2551 else
2552 {
2553 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2554 frame->check = slf_check_semaphore_wait;
2555 }
2556}
2557
2558/* signal */
2559
2560static void
2561coro_signal_wake (pTHX_ AV *av, int count)
2562{
2563 SvIVX (AvARRAY (av)[0]) = 0;
2564
2565 /* now signal count waiters */
2566 while (count > 0 && AvFILLp (av) > 0)
2567 {
2568 SV *cb;
2569
2570 /* swap first two elements so we can shift a waiter */
2571 cb = AvARRAY (av)[0];
2572 AvARRAY (av)[0] = AvARRAY (av)[1];
2573 AvARRAY (av)[1] = cb;
2574
2575 cb = av_shift (av);
2576
2577 api_ready (aTHX_ cb);
2578 sv_setiv (cb, 0); /* signal waiter */
2579 SvREFCNT_dec (cb);
2580
2581 --count;
2582 }
2583}
2584
2585static int
2586slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2587{
2588 /* if we are about to throw, also stop waiting */
2589 return SvROK ((SV *)frame->data) && !CORO_THROW;
2590}
2591
2592static void
2593slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2594{
2595 AV *av = (AV *)SvRV (arg [0]);
2596
2597 if (SvIVX (AvARRAY (av)[0]))
2598 {
2599 SvIVX (AvARRAY (av)[0]) = 0;
2600 frame->prepare = prepare_nop;
2601 frame->check = slf_check_nop;
2602 }
2603 else
2604 {
2605 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2606
2607 av_push (av, waiter);
2608
2609 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2610 frame->prepare = prepare_schedule;
2611 frame->check = slf_check_signal_wait;
2612 }
2613}
2614
2615/*****************************************************************************/
2616/* Coro::AIO */
2617
2618#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2619
2620/* helper storage struct */
2621struct io_state
2622{
2623 int errorno;
2624 I32 laststype; /* U16 in 5.10.0 */
2625 int laststatval;
2626 Stat_t statcache;
2627};
2628
2629static void
2630coro_aio_callback (pTHX_ CV *cv)
2631{
2632 dXSARGS;
2633 AV *state = (AV *)GENSUB_ARG;
2634 SV *coro = av_pop (state);
2635 SV *data_sv = newSV (sizeof (struct io_state));
2636
2637 av_extend (state, items - 1);
2638
2639 sv_upgrade (data_sv, SVt_PV);
2640 SvCUR_set (data_sv, sizeof (struct io_state));
2641 SvPOK_only (data_sv);
2642
2643 {
2644 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2645
2646 data->errorno = errno;
2647 data->laststype = PL_laststype;
2648 data->laststatval = PL_laststatval;
2649 data->statcache = PL_statcache;
2650 }
2651
2652 /* now build the result vector out of all the parameters and the data_sv */
2653 {
2654 int i;
2655
2656 for (i = 0; i < items; ++i)
2657 av_push (state, SvREFCNT_inc_NN (ST (i)));
2658 }
2659
2660 av_push (state, data_sv);
2661
2662 api_ready (aTHX_ coro);
2663 SvREFCNT_dec (coro);
2664 SvREFCNT_dec ((AV *)state);
2665}
2666
2667static int
2668slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2669{
2670 AV *state = (AV *)frame->data;
2671
2672 /* if we are about to throw, return early */
2673 /* this does not cancel the aio request, but at least */
2674 /* it quickly returns */
2675 if (CORO_THROW)
2676 return 0;
2677
2678 /* one element that is an RV? repeat! */
2679 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2680 return 1;
2681
2682 /* restore status */
2683 {
2684 SV *data_sv = av_pop (state);
2685 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2686
2687 errno = data->errorno;
2688 PL_laststype = data->laststype;
2689 PL_laststatval = data->laststatval;
2690 PL_statcache = data->statcache;
2691
2692 SvREFCNT_dec (data_sv);
2693 }
2694
2695 /* push result values */
2696 {
1850 dSP; 2697 dSP;
2698 int i;
1851 2699
2700 EXTEND (SP, AvFILLp (state) + 1);
2701 for (i = 0; i <= AvFILLp (state); ++i)
2702 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2703
2704 PUTBACK;
2705 }
2706
2707 return 0;
2708}
2709
2710static void
2711slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2712{
2713 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2714 SV *coro_hv = SvRV (coro_current);
2715 struct coro *coro = SvSTATE_hv (coro_hv);
2716
2717 /* put our coroutine id on the state arg */
2718 av_push (state, SvREFCNT_inc_NN (coro_hv));
2719
2720 /* first see whether we have a non-zero priority and set it as AIO prio */
2721 if (coro->prio)
2722 {
2723 dSP;
2724
2725 static SV *prio_cv;
2726 static SV *prio_sv;
2727
2728 if (expect_false (!prio_cv))
2729 {
2730 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2731 prio_sv = newSViv (0);
2732 }
2733
2734 PUSHMARK (SP);
2735 sv_setiv (prio_sv, coro->prio);
2736 XPUSHs (prio_sv);
2737
2738 PUTBACK;
2739 call_sv (prio_cv, G_VOID | G_DISCARD);
2740 }
2741
2742 /* now call the original request */
2743 {
2744 dSP;
2745 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2746 int i;
2747
1852 PUSHMARK (SP); 2748 PUSHMARK (SP);
1853 2749
1854 EXTEND (SP, 3); 2750 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2751 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2752
1859 RETURNOP (ssl_restore.op_first); 2753 for (i = 0; i < items; ++i)
1860} 2754 PUSHs (arg [i]);
1861 2755
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2756 /* now push the callback closure */
2757 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2758
1864/* declare prototype */ 2759 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2760 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2761 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2762 }
1922 2763
1923 TRANSFER (ta, 0); 2764 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2765 frame->data = (void *)state;
1925 2766 frame->prepare = prepare_schedule;
1926skip: 2767 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2768}
1932 2769
1933static void 2770static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2771coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2772{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2773 dXSARGS;
1937 2774
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2775 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2776
1941 /* we patch the op, and then re-run the whole call */ 2777 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2778}
2779
2780/*****************************************************************************/
2781
2782#if CORO_CLONE
2783# include "clone.c"
2784#endif
1956 2785
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2786MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2787
1959PROTOTYPES: DISABLE 2788PROTOTYPES: DISABLE
1960 2789
1961BOOT: 2790BOOT:
1962{ 2791{
1963#ifdef USE_ITHREADS 2792#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2793# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2794 coro_thx = PERL_GET_CONTEXT;
1967# endif 2795# endif
1968#endif 2796#endif
1969 BOOT_PAGESIZE; 2797 BOOT_PAGESIZE;
2798
2799 cctx_current = cctx_new_empty ();
1970 2800
1971 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2801 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1972 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2802 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1973 2803
1974 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2804 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1990 main_top_env = PL_top_env; 2820 main_top_env = PL_top_env;
1991 2821
1992 while (main_top_env->je_prev) 2822 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2823 main_top_env = main_top_env->je_prev;
1994 2824
2825 {
2826 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2827
2828 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2829 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2830
2831 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2832 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2833 }
2834
1995 coroapi.ver = CORO_API_VERSION; 2835 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2836 coroapi.rev = CORO_API_REVISION;
2837
1997 coroapi.transfer = api_transfer; 2838 coroapi.transfer = api_transfer;
2839
2840 coroapi.sv_state = SvSTATE_;
2841 coroapi.execute_slf = api_execute_slf;
2842 coroapi.prepare_nop = prepare_nop;
2843 coroapi.prepare_schedule = prepare_schedule;
2844 coroapi.prepare_cede = prepare_cede;
2845 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 2846
1999 { 2847 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2848 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2849
2002 if (!svp) croak ("Time::HiRes is required"); 2850 if (!svp) croak ("Time::HiRes is required");
… …
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2856 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2009} 2857}
2010 2858
2011SV * 2859SV *
2012new (char *klass, ...) 2860new (char *klass, ...)
2861 ALIAS:
2862 Coro::new = 1
2013 CODE: 2863 CODE:
2014{ 2864{
2015 struct coro *coro; 2865 struct coro *coro;
2016 MAGIC *mg; 2866 MAGIC *mg;
2017 HV *hv; 2867 HV *hv;
2868 CV *cb;
2018 int i; 2869 int i;
2870
2871 if (items > 1)
2872 {
2873 cb = coro_sv_2cv (aTHX_ ST (1));
2874
2875 if (!ix)
2876 {
2877 if (CvISXSUB (cb))
2878 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2879
2880 if (!CvROOT (cb))
2881 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2882 }
2883 }
2019 2884
2020 Newz (0, coro, 1, struct coro); 2885 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 2886 coro->args = newAV ();
2022 coro->flags = CF_NEW; 2887 coro->flags = CF_NEW;
2023 2888
… …
2028 coro->hv = hv = newHV (); 2893 coro->hv = hv = newHV ();
2029 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2894 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2030 mg->mg_flags |= MGf_DUP; 2895 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2896 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 2897
2898 if (items > 1)
2899 {
2033 av_extend (coro->args, items - 1); 2900 av_extend (coro->args, items - 1 + ix - 1);
2901
2902 if (ix)
2903 {
2904 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2905 cb = cv_coro_run;
2906 }
2907
2908 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2909
2034 for (i = 1; i < items; i++) 2910 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 2911 av_push (coro->args, newSVsv (ST (i)));
2912 }
2036} 2913}
2037 OUTPUT: 2914 OUTPUT:
2038 RETVAL 2915 RETVAL
2039 2916
2040void 2917void
2041_set_stacklevel (...) 2918transfer (...)
2042 ALIAS: 2919 PROTOTYPE: $$
2043 Coro::State::transfer = 1 2920 CODE:
2044 Coro::schedule = 2 2921 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 2922
2050bool 2923bool
2051_destroy (SV *coro_sv) 2924_destroy (SV *coro_sv)
2052 CODE: 2925 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2926 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2058_exit (int code) 2931_exit (int code)
2059 PROTOTYPE: $ 2932 PROTOTYPE: $
2060 CODE: 2933 CODE:
2061 _exit (code); 2934 _exit (code);
2062 2935
2936SV *
2937clone (Coro::State coro)
2938 CODE:
2939{
2940#if CORO_CLONE
2941 struct coro *ncoro = coro_clone (aTHX_ coro);
2942 MAGIC *mg;
2943 /* TODO: too much duplication */
2944 ncoro->hv = newHV ();
2945 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2946 mg->mg_flags |= MGf_DUP;
2947 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2948#else
2949 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2950#endif
2951}
2952 OUTPUT:
2953 RETVAL
2954
2063int 2955int
2064cctx_stacksize (int new_stacksize = 0) 2956cctx_stacksize (int new_stacksize = 0)
2957 PROTOTYPE: ;$
2065 CODE: 2958 CODE:
2066 RETVAL = cctx_stacksize; 2959 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 2960 if (new_stacksize)
2068 { 2961 {
2069 cctx_stacksize = new_stacksize; 2962 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 2965 OUTPUT:
2073 RETVAL 2966 RETVAL
2074 2967
2075int 2968int
2076cctx_max_idle (int max_idle = 0) 2969cctx_max_idle (int max_idle = 0)
2970 PROTOTYPE: ;$
2077 CODE: 2971 CODE:
2078 RETVAL = cctx_max_idle; 2972 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 2973 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 2974 cctx_max_idle = max_idle;
2081 OUTPUT: 2975 OUTPUT:
2082 RETVAL 2976 RETVAL
2083 2977
2084int 2978int
2085cctx_count () 2979cctx_count ()
2980 PROTOTYPE:
2086 CODE: 2981 CODE:
2087 RETVAL = cctx_count; 2982 RETVAL = cctx_count;
2088 OUTPUT: 2983 OUTPUT:
2089 RETVAL 2984 RETVAL
2090 2985
2091int 2986int
2092cctx_idle () 2987cctx_idle ()
2988 PROTOTYPE:
2093 CODE: 2989 CODE:
2094 RETVAL = cctx_idle; 2990 RETVAL = cctx_idle;
2095 OUTPUT: 2991 OUTPUT:
2096 RETVAL 2992 RETVAL
2097 2993
2098void 2994void
2099list () 2995list ()
2996 PROTOTYPE:
2100 PPCODE: 2997 PPCODE:
2101{ 2998{
2102 struct coro *coro; 2999 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 3000 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 3001 if (coro->hv)
… …
2166 3063
2167void 3064void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 3065throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 3066 PROTOTYPE: $;$
2170 CODE: 3067 CODE:
3068{
3069 struct coro *current = SvSTATE_current;
3070 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 3071 SvREFCNT_dec (*throwp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3072 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3073}
2173 3074
2174void 3075void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3076api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3077 PROTOTYPE: $;$
3078 C_ARGS: aTHX_ coro, flags
2176 3079
2177SV * 3080SV *
2178has_cctx (Coro::State coro) 3081has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 3082 PROTOTYPE: $
2180 CODE: 3083 CODE:
2181 RETVAL = boolSV (!!coro->cctx); 3084 /* maybe manage the running flag differently */
3085 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2182 OUTPUT: 3086 OUTPUT:
2183 RETVAL 3087 RETVAL
2184 3088
2185int 3089int
2186is_traced (Coro::State coro) 3090is_traced (Coro::State coro)
… …
2204 OUTPUT: 3108 OUTPUT:
2205 RETVAL 3109 RETVAL
2206 3110
2207void 3111void
2208force_cctx () 3112force_cctx ()
3113 PROTOTYPE:
2209 CODE: 3114 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 3115 cctx_current->idle_sp = 0;
2212 3116
2213void 3117void
2214swap_defsv (Coro::State self) 3118swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 3119 PROTOTYPE: $
2216 ALIAS: 3120 ALIAS:
2217 swap_defav = 1 3121 swap_defav = 1
2218 CODE: 3122 CODE:
2219 if (!self->slot) 3123 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 3124 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 3125 else
2222 { 3126 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3127 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3128 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 3129
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 3130 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 3131 }
2228 3132
3133
2229MODULE = Coro::State PACKAGE = Coro 3134MODULE = Coro::State PACKAGE = Coro
2230 3135
2231BOOT: 3136BOOT:
2232{ 3137{
2233 int i; 3138 int i;
2234 3139
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3140 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3141 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 3142 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3143 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3144 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2240 SvREADONLY_on (coro_current); 3145 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3146 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3147 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3148 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3149
3150 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3151 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3152 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3153 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2241 3154
2242 coro_stash = gv_stashpv ("Coro", TRUE); 3155 coro_stash = gv_stashpv ("Coro", TRUE);
2243 3156
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3157 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3158 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2253 3166
2254 { 3167 {
2255 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3168 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2256 3169
2257 coroapi.schedule = api_schedule; 3170 coroapi.schedule = api_schedule;
3171 coroapi.schedule_to = api_schedule_to;
2258 coroapi.cede = api_cede; 3172 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 3173 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 3174 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 3175 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 3176 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 3177 coroapi.current = coro_current;
2264 3178
2265 GCoroAPI = &coroapi; 3179 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 3180 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 3181 SvREADONLY_on (sv);
2268 } 3182 }
2269} 3183}
3184
3185void
3186terminate (...)
3187 CODE:
3188 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3189
3190void
3191schedule (...)
3192 CODE:
3193 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3194
3195void
3196schedule_to (...)
3197 CODE:
3198 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3199
3200void
3201cede_to (...)
3202 CODE:
3203 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3204
3205void
3206cede (...)
3207 CODE:
3208 CORO_EXECUTE_SLF_XS (slf_init_cede);
3209
3210void
3211cede_notself (...)
3212 CODE:
3213 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3214
3215void
3216_cancel (Coro::State self)
3217 CODE:
3218 coro_state_destroy (aTHX_ self);
3219 coro_call_on_destroy (aTHX_ self);
2270 3220
2271void 3221void
2272_set_current (SV *current) 3222_set_current (SV *current)
2273 PROTOTYPE: $ 3223 PROTOTYPE: $
2274 CODE: 3224 CODE:
… …
2277 3227
2278void 3228void
2279_set_readyhook (SV *hook) 3229_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3230 PROTOTYPE: $
2281 CODE: 3231 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3232 SvREFCNT_dec (coro_readyhook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3233 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 3234
2287int 3235int
2288prio (Coro::State coro, int newprio = 0) 3236prio (Coro::State coro, int newprio = 0)
3237 PROTOTYPE: $;$
2289 ALIAS: 3238 ALIAS:
2290 nice = 1 3239 nice = 1
2291 CODE: 3240 CODE:
2292{ 3241{
2293 RETVAL = coro->prio; 3242 RETVAL = coro->prio;
… …
2308 3257
2309SV * 3258SV *
2310ready (SV *self) 3259ready (SV *self)
2311 PROTOTYPE: $ 3260 PROTOTYPE: $
2312 CODE: 3261 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3262 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3263 OUTPUT:
2315 RETVAL 3264 RETVAL
2316 3265
2317int 3266int
2318nready (...) 3267nready (...)
… …
2320 CODE: 3269 CODE:
2321 RETVAL = coro_nready; 3270 RETVAL = coro_nready;
2322 OUTPUT: 3271 OUTPUT:
2323 RETVAL 3272 RETVAL
2324 3273
2325# for async_pool speedup
2326void 3274void
2327_pool_1 (SV *cb) 3275_pool_handler (...)
2328 CODE: 3276 CODE:
2329{ 3277 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3278
2337 if (!invoke) 3279void
3280async_pool (SV *cv, ...)
3281 PROTOTYPE: &@
3282 PPCODE:
3283{
3284 HV *hv = (HV *)av_pop (av_async_pool);
3285 AV *av = newAV ();
3286 SV *cb = ST (0);
3287 int i;
3288
3289 av_extend (av, items - 2);
3290 for (i = 1; i < items; ++i)
3291 av_push (av, SvREFCNT_inc_NN (ST (i)));
3292
3293 if ((SV *)hv == &PL_sv_undef)
2338 { 3294 {
2339 SV *old = PL_diehook; 3295 PUSHMARK (SP);
2340 PL_diehook = 0; 3296 EXTEND (SP, 2);
2341 SvREFCNT_dec (old); 3297 PUSHs (sv_Coro);
2342 croak ("\3async_pool terminate\2\n"); 3298 PUSHs ((SV *)cv_pool_handler);
3299 PUTBACK;
3300 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3301 SPAGAIN;
3302
3303 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2343 } 3304 }
2344 3305
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 3306 {
2358 av_fill (defav, len - 1); 3307 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 3308
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3309 assert (!coro->invoke_cb);
3310 assert (!coro->invoke_av);
3311 coro->invoke_cb = SvREFCNT_inc (cb);
3312 coro->invoke_av = av;
2361 } 3313 }
2362 3314
3315 api_ready (aTHX_ (SV *)hv);
3316
3317 if (GIMME_V != G_VOID)
3318 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3319 else
2363 SvREFCNT_dec (invoke); 3320 SvREFCNT_dec (hv);
2364} 3321}
2365 3322
2366void 3323SV *
2367_pool_2 (SV *cb) 3324rouse_cb ()
3325 PROTOTYPE:
2368 CODE: 3326 CODE:
2369{ 3327 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3328 OUTPUT:
2442 RETVAL 3329 RETVAL
2443 3330
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3331void
2450_get_state (SV *self) 3332rouse_wait (...)
3333 PROTOTYPE: ;$
2451 PPCODE: 3334 PPCODE:
2452{ 3335 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460 3336
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465 3337
2466 av_extend (av, AvFILLp (defav) + 1 + 1); 3338MODULE = Coro::State PACKAGE = PerlIO::cede
2467 3339
2468 for (i = 0; i <= AvFILLp (defav); ++i) 3340BOOT:
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3341 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2470 3342
2471 av_push (av, data_sv);
2472 3343
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3344MODULE = Coro::State PACKAGE = Coro::Semaphore
2474 3345
2475 api_ready (self); 3346SV *
2476} 3347new (SV *klass, SV *count = 0)
3348 CODE:
3349 RETVAL = sv_bless (
3350 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3351 GvSTASH (CvGV (cv))
3352 );
3353 OUTPUT:
3354 RETVAL
3355
3356# helper for Coro::Channel
3357SV *
3358_alloc (int count)
3359 CODE:
3360 RETVAL = coro_waitarray_new (aTHX_ count);
3361 OUTPUT:
3362 RETVAL
3363
3364SV *
3365count (SV *self)
3366 CODE:
3367 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3368 OUTPUT:
3369 RETVAL
2477 3370
2478void 3371void
2479_set_state (SV *state) 3372up (SV *self, int adjust = 1)
2480 PROTOTYPE: $ 3373 ALIAS:
3374 adjust = 1
3375 CODE:
3376 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3377
3378void
3379down (...)
3380 CODE:
3381 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3382
3383void
3384wait (...)
3385 CODE:
3386 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3387
3388void
3389try (SV *self)
3390 PPCODE:
3391{
3392 AV *av = (AV *)SvRV (self);
3393 SV *count_sv = AvARRAY (av)[0];
3394 IV count = SvIVX (count_sv);
3395
3396 if (count > 0)
3397 {
3398 --count;
3399 SvIVX (count_sv) = count;
3400 XSRETURN_YES;
3401 }
3402 else
3403 XSRETURN_NO;
3404}
3405
3406void
3407waiters (SV *self)
3408 PPCODE:
3409{
3410 AV *av = (AV *)SvRV (self);
3411 int wcount = AvFILLp (av) + 1 - 1;
3412
3413 if (GIMME_V == G_SCALAR)
3414 XPUSHs (sv_2mortal (newSViv (wcount)));
3415 else
3416 {
3417 int i;
3418 EXTEND (SP, wcount);
3419 for (i = 1; i <= wcount; ++i)
3420 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3421 }
3422}
3423
3424MODULE = Coro::State PACKAGE = Coro::Signal
3425
3426SV *
3427new (SV *klass)
2481 PPCODE: 3428 CODE:
3429 RETVAL = sv_bless (
3430 coro_waitarray_new (aTHX_ 0),
3431 GvSTASH (CvGV (cv))
3432 );
3433 OUTPUT:
3434 RETVAL
3435
3436void
3437wait (...)
3438 CODE:
3439 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3440
3441void
3442broadcast (SV *self)
3443 CODE:
2482{ 3444{
2483 AV *av = (AV *)SvRV (state); 3445 AV *av = (AV *)SvRV (self);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3446 coro_signal_wake (aTHX_ av, AvFILLp (av));
2485 int i; 3447}
2486 3448
2487 errno = data->errorno; 3449void
2488 PL_laststype = data->laststype; 3450send (SV *self)
2489 PL_laststatval = data->laststatval; 3451 CODE:
2490 PL_statcache = data->statcache; 3452{
3453 AV *av = (AV *)SvRV (self);
2491 3454
2492 EXTEND (SP, AvFILLp (av)); 3455 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3456 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3457 else
3458 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3459}
3460
3461IV
3462awaited (SV *self)
3463 CODE:
3464 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3465 OUTPUT:
3466 RETVAL
2496 3467
2497 3468
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3469MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3470
2500BOOT: 3471BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3472 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3473
2503SV * 3474void
2504_schedule (...) 3475_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3476 CODE:
2507{ 3477{
2508 static int incede; 3478 static int incede;
2509 3479
2510 api_cede_notself (); 3480 api_cede_notself (aTHX);
2511 3481
2512 ++incede; 3482 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3483 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3484 ;
2515 3485
2516 sv_setsv (sv_activity, &PL_sv_undef); 3486 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3487 if (coro_nready >= incede)
2518 { 3488 {
2519 PUSHMARK (SP); 3489 PUSHMARK (SP);
2520 PUTBACK; 3490 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3491 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3492 }
2524 3493
2525 --incede; 3494 --incede;
2526} 3495}
2527 3496
2528 3497
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3498MODULE = Coro::State PACKAGE = Coro::AIO
2530 3499
2531BOOT: 3500void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3501_register (char *target, char *proto, SV *req)
3502 CODE:
3503{
3504 CV *req_cv = coro_sv_2cv (aTHX_ req);
3505 /* newXSproto doesn't return the CV on 5.8 */
3506 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3507 sv_setpv ((SV *)slf_cv, proto);
3508 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3509}
2533 3510

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