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Comparing Coro/Coro/State.xs (file contents):
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC vs.
Revision 1.332 by root, Thu Nov 27 12:20:31 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 177
188struct transfer_args 178static AV *av_destroy; /* destruction queue */
189{ 179static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
191};
192 181
193static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 184static SV *rv_diehook;
196static SV *rv_warnhook; 185static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
198 187
199/* async_pool helper stuff */ 188/* async_pool helper stuff */
200static SV *sv_pool_rss; 189static SV *sv_pool_rss;
201static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
203 196
204/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
205static SV *sv_activity; 198static SV *sv_activity;
206 199
207static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 210};
218 211
219/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 213typedef struct coro_cctx
214{
221 struct coro_cctx *next; 215 struct coro_cctx *next;
222 216
223 /* the stack */ 217 /* the stack */
224 void *sptr; 218 void *sptr;
225 size_t ssize; 219 size_t ssize;
… …
234#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
235 int valgrind_id; 229 int valgrind_id;
236#endif 230#endif
237 unsigned char flags; 231 unsigned char flags;
238} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
239 237
240enum { 238enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 243};
246 244
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 246typedef struct
247{
249 SV *defsv; 248 SV *defsv;
250 AV *defav; 249 AV *defav;
251 SV *errsv; 250 SV *errsv;
252 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 253#define VAR(name,type) type name;
254# include "state.h" 254# include "state.h"
255#undef VAR 255#undef VAR
256} perl_slots; 256} perl_slots;
257 257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 259
260/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
261struct coro { 261struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 263 coro_cctx *cctx;
264 264
265 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 267 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
268 269
270 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
273 276
274 /* statistics */ 277 /* statistics */
275 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
276 279
277 /* coro process data */ 280 /* coro process data */
278 int prio; 281 int prio;
279 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
280 284
281 /* async_pool */ 285 /* async_pool */
282 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
283 289
284 /* linked list */ 290 /* linked list */
285 struct coro *next, *prev; 291 struct coro *next, *prev;
286}; 292};
287 293
288typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
290 301
291/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
292 303
293#define PRIO_MAX 3 304#define PRIO_MAX 3
294#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
299 310
300/* for Coro.pm */ 311/* for Coro.pm */
301static SV *coro_current; 312static SV *coro_current;
302static SV *coro_readyhook; 313static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 316static struct coro *coro_first;
305#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
339static AV * 412static AV *
340coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
341{ 414{
342 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
344 417
345 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 424#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 426 --AvFILLp (padlist);
354 427
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
357 430
358 return newpadlist; 431 return newpadlist;
359} 432}
360 433
361static void 434static void
362free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
363{ 436{
364 /* may be during global destruction */ 437 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
366 { 439 {
367 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
368 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
369 { 443 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
371 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 446 I32 j = AvFILLp (av);
373 SV *sv; 447
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 453 }
380 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
382 } 459 }
383} 460}
384 461
385static int 462static int
… …
394 471
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 473
397 return 0; 474 return 0;
398} 475}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 476
403static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 478 0, 0, 0, 0,
405 coro_cv_free 479 coro_cv_free
406}; 480};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 481
444/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
445static void 483static void
446get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
447{ 485{
… …
453 else 491 else
454 { 492 {
455#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
462#else 500#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 502#endif
465 } 503 }
466} 504}
467 505
468static void 506static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 514
477 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
478 516
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
481 519
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 521}
484 522
485/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
490 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
491 c->slot = 0; 529 c->slot = 0;
492 530
493 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
494 532
495 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
499 538
500 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 540 # include "state.h"
502 #undef VAR 541 #undef VAR
503 542
… …
514 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
515 } 554 }
516 555
517 PUTBACK; 556 PUTBACK;
518 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
519} 561}
520 562
521static void 563static void
522save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
523{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
524 { 569 {
525 dSP; 570 dSP;
526 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
583 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
584 629
585 { 630 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 632
588 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
592 638
593 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 640 # include "state.h"
595 #undef VAR 641 #undef VAR
596 } 642 }
597} 643}
598 644
599/* 645/*
600 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
604 */ 650 */
605#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
607#else 653#else
608static void 654static void
609coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
610{ 656{
611 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 721 Safefree (PL_retstack);
676#endif 722#endif
677} 723}
678 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
679static size_t 734static size_t
680coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
681{ 736{
682 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
683 738
684 if (coro->mainstack) 739 if (coro->mainstack)
685 { 740 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
690 { 742 {
691 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
692 744 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 745 #undef SYM
696 } 746 }
697 else 747 else
698 slot = coro->slot;
699
700 if (slot)
701 { 748 {
702 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 752 }
714 } 753 }
715 754
716 return rss; 755 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 756}
745 757
746/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
747 759
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 846
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 848}
837 849
838static 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 */
839coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
840{ 873{
841 /* 874 /*
842 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
843 */ 876 */
… …
845 878
846 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 886 PL_curpm = 0;
851 PL_curpad = 0; 887 PL_curpad = 0;
852 PL_localizing = 0; 888 PL_localizing = 0;
853 PL_dirty = 0; 889 PL_dirty = 0;
854 PL_restartop = 0; 890 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 892 PL_parser = 0;
857#endif 893#endif
894 PL_hints = 0;
858 895
859 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
860 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 );
861 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);
862 899
863 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
866 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;
867 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 907
870 { 908 {
871 dSP; 909 dSP;
872 UNOP myop; 910 UNOP myop;
873 911
874 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
877 916
878 PUSHMARK (SP); 917 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 919 PUTBACK;
881 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 922 }
885 923
886 /* 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
887 * 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.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 926 */
890 SLF_HEAD; 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
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;
891} 940}
892 941
893static void 942static void
894coro_destruct (pTHX_ struct coro *coro) 943coro_destruct (pTHX_ struct coro *coro)
895{ 944{
… …
914 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
919 969
920 SvREFCNT_dec (PL_diehook); 970 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 971 SvREFCNT_dec (PL_warnhook);
922 972
923 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
925 977
926 coro_destruct_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
927} 979}
928 980
929INLINE void 981INLINE void
… …
939static int 991static int
940runops_trace (pTHX) 992runops_trace (pTHX)
941{ 993{
942 COP *oldcop = 0; 994 COP *oldcop = 0;
943 int oldcxix = -2; 995 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 996
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 998 {
949 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
950 1000
951 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1002 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1003 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1004 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1006 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
958 SV **cb; 1008 SV **cb;
… …
995 1045
996 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
997 { 1047 {
998 SV **cb; 1048 SV **cb;
999 1049
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1051 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1053
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1055 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1056 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
1010 1059
1011 if (isGV (gv)) 1060 if (isGV (gv))
… …
1016 SAVETMPS; 1065 SAVETMPS;
1017 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1067 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1069 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1070 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1071 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1072 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1073 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1074 SPAGAIN;
1026 FREETMPS; 1075 FREETMPS;
… …
1029 } 1078 }
1030 1079
1031 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
1032 } 1081 }
1033 1082
1034 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1084 {
1036 dSP; 1085 dSP;
1037 1086
1038 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1088 ENTER;
… …
1058 1107
1059 TAINT_NOT; 1108 TAINT_NOT;
1060 return 0; 1109 return 0;
1061} 1110}
1062 1111
1112static struct CoroSLF cctx_ssl_frame;
1113
1063static void 1114static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1116{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1117 ta->prev = 0;
1068} 1118}
1069 1119
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1120static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1122{
1073/* also initialises PL_top_env */ 1123 *frame = cctx_ssl_frame;
1124
1125 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1126}
1127
1128/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1129static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
1076{ 1131{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
1081 1133
1082 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
1084 1136
1085 Zero (&myop, 1, UNOP); 1137 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1139 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1140 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1141
1089 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1144
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1147}
1098 1148
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1149/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1150INLINE void
1101transfer_tail (pTHX) 1151transfer_tail (pTHX)
1102{ 1152{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1153 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1154}
1119 1155
1120/* 1156/*
1121 * this is a _very_ stripped down perl interpreter ;) 1157 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1158 */
… …
1129# endif 1165# endif
1130#endif 1166#endif
1131 { 1167 {
1132 dTHX; 1168 dTHX;
1133 1169
1134 /* we are the alternative tail to pp_set_stacklevel */ 1170 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1171 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1172 /* PL_nop = PL_nop->op_next */
1140 1173
1141 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
1143 1176
1144 /* cctx_run is the alternative tail of transfer() */ 1177 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1178 transfer_tail (aTHX);
1146 1179
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1180 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1182 perl_run (PL_curinterp);
1183 /*
1184 * Unfortunately, there is no way to get at the return values of the
1185 * coro body here, as perl_run destroys these
1186 */
1150 1187
1151 /* 1188 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1189 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1190 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1191 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1193 * coroutine as Coro has no such concept.
1194 * This actually isn't valid with the pthread backend, but OSes requiring
1195 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1196 */
1158 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1198 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1199 }
1161} 1200}
… …
1238cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
1239{ 1278{
1240 if (!cctx) 1279 if (!cctx)
1241 return; 1280 return;
1242 1281
1282 assert (cctx != cctx_current);//D temporary
1283
1243 --cctx_count; 1284 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1285 coro_destroy (&cctx->cctx);
1245 1286
1246 /* coro_transfer creates new, empty cctx's */ 1287 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1288 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
1306 1347
1307static void 1348static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1350{
1351 /* TODO: throwing up here is considered harmful */
1352
1310 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
1311 { 1354 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1356 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1357
1315 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1359 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1360
1318 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1362 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1363
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1364#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1365 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1366 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1367#endif
1325 } 1368 }
1326} 1369}
1327 1370
1328/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
1329static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1374{
1332 dSTACKLEVEL; 1375 dSTACKLEVEL;
1333 1376
1334 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1378 if (expect_false (!prev))
1336 { 1379 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1380 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1381 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1382 }
1340 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1341 { 1384 {
1342 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1343 1386
1344 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1345 { 1388 {
1346 /* create a new empty/source context */ 1389 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1350 } 1392 }
1351 1393
1352 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1395 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1396
1357 /* first get rid of the old state */ 1397 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1398 save_perl (aTHX_ prev);
1359 1399
1360 if (expect_false (next->flags & CF_NEW)) 1400 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1366 } 1406 }
1367 else 1407 else
1368 load_perl (aTHX_ next); 1408 load_perl (aTHX_ next);
1369 1409
1370 prev__cctx = prev->cctx; 1410 assert (!prev->cctx);//D temporary
1371 1411
1372 /* possibly untie and reuse the cctx */ 1412 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1413 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1414 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1415 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1416 && !force_cctx
1377 )) 1417 ))
1378 { 1418 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1419 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1420 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1421
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1422 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1423 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1425 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1426 next->cctx = cctx_get (aTHX);
1389 1427
1390 cctx_put (prev__cctx); 1428 cctx_put (cctx_current);
1391 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1392 1432
1393 ++next->usecount; 1433 ++next->usecount;
1394 1434
1395 if (expect_true (!next->cctx)) 1435 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1437
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1438 next->cctx = 0;
1399 transfer_next = next;
1400 1439
1401 if (expect_false (prev__cctx != next->cctx)) 1440 if (expect_false (cctx_prev != cctx_current))
1402 { 1441 {
1403 prev__cctx->top_env = PL_top_env; 1442 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1443 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1445 }
1407 1446
1408 transfer_tail (aTHX); 1447 transfer_tail (aTHX);
1409 } 1448 }
1410} 1449}
… …
1417static int 1456static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1457coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1458{
1420 if (coro->flags & CF_DESTROYED) 1459 if (coro->flags & CF_DESTROYED)
1421 return 0; 1460 return 0;
1461
1462 if (coro->on_destroy)
1463 coro->on_destroy (aTHX_ coro);
1422 1464
1423 coro->flags |= CF_DESTROYED; 1465 coro->flags |= CF_DESTROYED;
1424 1466
1425 if (coro->flags & CF_READY) 1467 if (coro->flags & CF_READY)
1426 { 1468 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1469 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1470 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1471 --coro_nready;
1431 UNLOCK;
1432 } 1472 }
1433 else 1473 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1474 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1475
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1476 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1477 {
1438 struct coro temp; 1478 struct coro temp;
1439 1479
1440 if (coro->flags & CF_RUNNING) 1480 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1481
1443 save_perl (aTHX_ &temp); 1482 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1483 load_perl (aTHX_ coro);
1445 1484
1446 coro_destruct (aTHX_ coro); 1485 coro_destruct (aTHX_ coro);
… …
1449 1488
1450 coro->slot = 0; 1489 coro->slot = 0;
1451 } 1490 }
1452 1491
1453 cctx_destroy (coro->cctx); 1492 cctx_destroy (coro->cctx);
1493 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1494 SvREFCNT_dec (coro->args);
1495 SvREFCNT_dec (CORO_THROW);
1455 1496
1456 if (coro->next) coro->next->prev = coro->prev; 1497 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1498 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1499 if (coro == coro_first) coro_first = coro->next;
1459 1500
… …
1497# define MGf_DUP 0 1538# define MGf_DUP 0
1498#endif 1539#endif
1499}; 1540};
1500 1541
1501static void 1542static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1543prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1544{
1504 ta->prev = SvSTATE (prev_sv); 1545 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1546 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1547 TRANSFER_CHECK (*ta);
1507} 1548}
1508 1549
1509static void 1550static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1551api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1552{
1512 struct transfer_args ta; 1553 struct coro_transfer_args ta;
1513 1554
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1555 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1556 TRANSFER (ta, 1);
1516} 1557}
1517 1558
1559/*****************************************************************************/
1560/* gensub: simple closure generation utility */
1561
1562#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1563
1564/* create a closure from XS, returns a code reference */
1565/* the arg can be accessed via GENSUB_ARG from the callback */
1566/* the callback must use dXSARGS/XSRETURN */
1567static SV *
1568gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1569{
1570 CV *cv = (CV *)newSV (0);
1571
1572 sv_upgrade ((SV *)cv, SVt_PVCV);
1573
1574 CvANON_on (cv);
1575 CvISXSUB_on (cv);
1576 CvXSUB (cv) = xsub;
1577 GENSUB_ARG = arg;
1578
1579 return newRV_noinc ((SV *)cv);
1580}
1581
1518/** Coro ********************************************************************/ 1582/** Coro ********************************************************************/
1519 1583
1520static void 1584INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1585coro_enq (pTHX_ struct coro *coro)
1522{ 1586{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1587 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1588}
1525 1589
1526static SV * 1590INLINE SV *
1527coro_deq (pTHX) 1591coro_deq (pTHX)
1528{ 1592{
1529 int prio; 1593 int prio;
1530 1594
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1595 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1540{ 1604{
1541 struct coro *coro; 1605 struct coro *coro;
1542 SV *sv_hook; 1606 SV *sv_hook;
1543 void (*xs_hook)(void); 1607 void (*xs_hook)(void);
1544 1608
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1609 coro = SvSTATE (coro_sv);
1549 1610
1550 if (coro->flags & CF_READY) 1611 if (coro->flags & CF_READY)
1551 return 0; 1612 return 0;
1552 1613
1553 coro->flags |= CF_READY; 1614 coro->flags |= CF_READY;
1554 1615
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1616 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1617 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1618
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1619 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1620 ++coro_nready;
1562 1621
1563 UNLOCK;
1564
1565 if (sv_hook) 1622 if (sv_hook)
1566 { 1623 {
1567 dSP; 1624 dSP;
1568 1625
1569 ENTER; 1626 ENTER;
1570 SAVETMPS; 1627 SAVETMPS;
1571 1628
1572 PUSHMARK (SP); 1629 PUSHMARK (SP);
1573 PUTBACK; 1630 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1631 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1632
1577 FREETMPS; 1633 FREETMPS;
1578 LEAVE; 1634 LEAVE;
1579 } 1635 }
1580 1636
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1644api_is_ready (pTHX_ SV *coro_sv)
1589{ 1645{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1646 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1647}
1592 1648
1649/* expects to own a reference to next->hv */
1593INLINE void 1650INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1651prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1652{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1653 SV *prev_sv = SvRV (coro_current);
1654
1640 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1656 ta->next = next;
1657
1641 TRANSFER_CHECK (*ta); 1658 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1659
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, (SV *)next->hv);
1645 1661
1646 LOCK;
1647 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1649 UNLOCK; 1664}
1665
1666static void
1667prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1668{
1669 for (;;)
1670 {
1671 SV *next_sv = coro_deq (aTHX);
1672
1673 if (expect_true (next_sv))
1674 {
1675 struct coro *next = SvSTATE_hv (next_sv);
1676
1677 /* cannot transfer to destroyed coros, skip and look for next */
1678 if (expect_false (next->flags & CF_DESTROYED))
1679 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1680 else
1681 {
1682 next->flags &= ~CF_READY;
1683 --coro_nready;
1684
1685 prepare_schedule_to (aTHX_ ta, next);
1686 break;
1687 }
1688 }
1689 else
1690 {
1691 /* nothing to schedule: call the idle handler */
1692 if (SvROK (sv_idle)
1693 && SvOBJECT (SvRV (sv_idle)))
1694 {
1695 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1696 api_ready (aTHX_ SvRV (sv_idle));
1697 --coro_nready;
1698 }
1699 else
1700 {
1701 dSP;
1702
1703 ENTER;
1704 SAVETMPS;
1705
1706 PUSHMARK (SP);
1707 PUTBACK;
1708 call_sv (sv_idle, G_VOID | G_DISCARD);
1709
1710 FREETMPS;
1711 LEAVE;
1712 }
1713 }
1714 }
1650} 1715}
1651 1716
1652INLINE void 1717INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1718prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1719{
1655 api_ready (aTHX_ coro_current); 1720 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1721 prepare_schedule (aTHX_ ta);
1657} 1722}
1658 1723
1659static void 1724INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1725prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1726{
1662 SV *prev = SvRV (coro_current); 1727 SV *prev = SvRV (coro_current);
1663 1728
1664 if (coro_nready) 1729 if (coro_nready)
1665 { 1730 {
1666 prepare_schedule (aTHX_ ta); 1731 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1732 api_ready (aTHX_ prev);
1668 } 1733 }
1669 else 1734 else
1670 ta->prev = ta->next = SvSTATE (prev); 1735 prepare_nop (aTHX_ ta);
1671} 1736}
1672 1737
1673static void 1738static void
1674api_schedule (pTHX) 1739api_schedule (pTHX)
1675{ 1740{
1676 struct transfer_args ta; 1741 struct coro_transfer_args ta;
1677 1742
1678 prepare_schedule (aTHX_ &ta); 1743 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1744 TRANSFER (ta, 1);
1680} 1745}
1681 1746
1747static void
1748api_schedule_to (pTHX_ SV *coro_sv)
1749{
1750 struct coro_transfer_args ta;
1751 struct coro *next = SvSTATE (coro_sv);
1752
1753 SvREFCNT_inc_NN (coro_sv);
1754 prepare_schedule_to (aTHX_ &ta, next);
1755}
1756
1682static int 1757static int
1683api_cede (pTHX) 1758api_cede (pTHX)
1684{ 1759{
1685 struct transfer_args ta; 1760 struct coro_transfer_args ta;
1686 1761
1687 prepare_cede (aTHX_ &ta); 1762 prepare_cede (aTHX_ &ta);
1688 1763
1689 if (expect_true (ta.prev != ta.next)) 1764 if (expect_true (ta.prev != ta.next))
1690 { 1765 {
… …
1698static int 1773static int
1699api_cede_notself (pTHX) 1774api_cede_notself (pTHX)
1700{ 1775{
1701 if (coro_nready) 1776 if (coro_nready)
1702 { 1777 {
1703 struct transfer_args ta; 1778 struct coro_transfer_args ta;
1704 1779
1705 prepare_cede_notself (aTHX_ &ta); 1780 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1781 TRANSFER (ta, 1);
1707 return 1; 1782 return 1;
1708 } 1783 }
… …
1713static void 1788static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1789api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1790{
1716 struct coro *coro = SvSTATE (coro_sv); 1791 struct coro *coro = SvSTATE (coro_sv);
1717 1792
1793 if (coro->flags & CF_RUNNING)
1794 croak ("cannot enable tracing on a running coroutine, caught");
1795
1718 if (flags & CC_TRACE) 1796 if (flags & CC_TRACE)
1719 { 1797 {
1720 if (!coro->cctx) 1798 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1799 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1800 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1801 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1802
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1803 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1804 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1805 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1806 {
… …
1733 else 1811 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1812 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1813 }
1736} 1814}
1737 1815
1738#if 0 1816static void
1817coro_call_on_destroy (pTHX_ struct coro *coro)
1818{
1819 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1820 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1821
1822 if (on_destroyp)
1823 {
1824 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1825
1826 while (AvFILLp (on_destroy) >= 0)
1827 {
1828 dSP; /* don't disturb outer sp */
1829 SV *cb = av_pop (on_destroy);
1830
1831 PUSHMARK (SP);
1832
1833 if (statusp)
1834 {
1835 int i;
1836 AV *status = (AV *)SvRV (*statusp);
1837 EXTEND (SP, AvFILLp (status) + 1);
1838
1839 for (i = 0; i <= AvFILLp (status); ++i)
1840 PUSHs (AvARRAY (status)[i]);
1841 }
1842
1843 PUTBACK;
1844 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1845 }
1846 }
1847}
1848
1849static void
1850slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1851{
1852 int i;
1853 HV *hv = (HV *)SvRV (coro_current);
1854 AV *av = newAV ();
1855
1856 av_extend (av, items - 1);
1857 for (i = 0; i < items; ++i)
1858 av_push (av, SvREFCNT_inc_NN (arg [i]));
1859
1860 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1861
1862 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1863 api_ready (aTHX_ sv_manager);
1864
1865 frame->prepare = prepare_schedule;
1866 frame->check = slf_check_repeat;
1867}
1868
1869/*****************************************************************************/
1870/* async pool handler */
1871
1739static int 1872static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1873slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1874{
1742 AV *padlist; 1875 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1876 struct coro *coro = (struct coro *)frame->data;
1744 1877
1745 abort (); 1878 if (!coro->invoke_cb)
1879 return 1; /* loop till we have invoke */
1880 else
1881 {
1882 hv_store (hv, "desc", sizeof ("desc") - 1,
1883 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1884
1885 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1886
1887 {
1888 dSP;
1889 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1890 PUTBACK;
1891 }
1892
1893 SvREFCNT_dec (GvAV (PL_defgv));
1894 GvAV (PL_defgv) = coro->invoke_av;
1895 coro->invoke_av = 0;
1896
1897 return 0;
1898 }
1899}
1900
1901static void
1902slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1903{
1904 HV *hv = (HV *)SvRV (coro_current);
1905 struct coro *coro = SvSTATE_hv ((SV *)hv);
1906
1907 if (expect_true (coro->saved_deffh))
1908 {
1909 /* subsequent iteration */
1910 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1911 coro->saved_deffh = 0;
1912
1913 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1914 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1915 {
1916 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1917 coro->invoke_av = newAV ();
1918
1919 frame->prepare = prepare_nop;
1920 }
1921 else
1922 {
1923 av_clear (GvAV (PL_defgv));
1924 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1925
1926 coro->prio = 0;
1927
1928 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1929 api_trace (aTHX_ coro_current, 0);
1930
1931 frame->prepare = prepare_schedule;
1932 av_push (av_async_pool, SvREFCNT_inc (hv));
1933 }
1934 }
1935 else
1936 {
1937 /* first iteration, simply fall through */
1938 frame->prepare = prepare_nop;
1939 }
1940
1941 frame->check = slf_check_pool_handler;
1942 frame->data = (void *)coro;
1943}
1944
1945/*****************************************************************************/
1946/* rouse callback */
1947
1948#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1949
1950static void
1951coro_rouse_callback (pTHX_ CV *cv)
1952{
1953 dXSARGS;
1954 SV *data = (SV *)GENSUB_ARG;
1955
1956 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1957 {
1958 /* first call, set args */
1959 AV *av = newAV ();
1960 SV *coro = SvRV (data);
1961
1962 SvRV_set (data, (SV *)av);
1963 api_ready (aTHX_ coro);
1964 SvREFCNT_dec (coro);
1965
1966 /* better take a full copy of the arguments */
1967 while (items--)
1968 av_store (av, items, newSVsv (ST (items)));
1969 }
1970
1971 XSRETURN_EMPTY;
1972}
1973
1974static int
1975slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1976{
1977 SV *data = (SV *)frame->data;
1978
1979 if (CORO_THROW)
1980 return 0;
1981
1982 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1983 return 1;
1984
1985 /* now push all results on the stack */
1986 {
1987 dSP;
1988 AV *av = (AV *)SvRV (data);
1989 int i;
1990
1991 EXTEND (SP, AvFILLp (av) + 1);
1992 for (i = 0; i <= AvFILLp (av); ++i)
1993 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1994
1995 /* we have stolen the elements, so ste length to zero and free */
1996 AvFILLp (av) = -1;
1997 av_undef (av);
1998
1999 PUTBACK;
2000 }
1746 2001
1747 return 0; 2002 return 0;
1748} 2003}
1749 2004
1750static MGVTBL coro_gensub_vtbl = { 2005static void
1751 0, 0, 0, 0, 2006slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2007{
1753}; 2008 SV *cb;
1754#endif 2009
2010 if (items)
2011 cb = arg [0];
2012 else
2013 {
2014 struct coro *coro = SvSTATE_current;
2015
2016 if (!coro->rouse_cb)
2017 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2018
2019 cb = sv_2mortal (coro->rouse_cb);
2020 coro->rouse_cb = 0;
2021 }
2022
2023 if (!SvROK (cb)
2024 || SvTYPE (SvRV (cb)) != SVt_PVCV
2025 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2026 croak ("Coro::rouse_wait called with illegal callback argument,");
2027
2028 {
2029 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2030 SV *data = (SV *)GENSUB_ARG;
2031
2032 frame->data = (void *)data;
2033 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2034 frame->check = slf_check_rouse_wait;
2035 }
2036}
2037
2038static SV *
2039coro_new_rouse_cb (pTHX)
2040{
2041 HV *hv = (HV *)SvRV (coro_current);
2042 struct coro *coro = SvSTATE_hv (hv);
2043 SV *data = newRV_inc ((SV *)hv);
2044 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2045
2046 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2047 SvREFCNT_dec (data); /* magicext increases the refcount */
2048
2049 SvREFCNT_dec (coro->rouse_cb);
2050 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2051
2052 return cb;
2053}
2054
2055/*****************************************************************************/
2056/* schedule-like-function opcode (SLF) */
2057
2058static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2059static const CV *slf_cv;
2060static SV **slf_argv;
2061static int slf_argc, slf_arga; /* count, allocated */
2062static I32 slf_ax; /* top of stack, for restore */
2063
2064/* this restores the stack in the case we patched the entersub, to */
2065/* recreate the stack frame as perl will on following calls */
2066/* since entersub cleared the stack */
2067static OP *
2068pp_restore (pTHX)
2069{
2070 int i;
2071 SV **SP = PL_stack_base + slf_ax;
2072
2073 PUSHMARK (SP);
2074
2075 EXTEND (SP, slf_argc + 1);
2076
2077 for (i = 0; i < slf_argc; ++i)
2078 PUSHs (sv_2mortal (slf_argv [i]));
2079
2080 PUSHs ((SV *)CvGV (slf_cv));
2081
2082 RETURNOP (slf_restore.op_first);
2083}
2084
2085static void
2086slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2087{
2088 SV **arg = (SV **)slf_frame.data;
2089
2090 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2091}
2092
2093static void
2094slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{
2096 if (items != 2)
2097 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2098
2099 frame->prepare = slf_prepare_transfer;
2100 frame->check = slf_check_nop;
2101 frame->data = (void *)arg; /* let's hope it will stay valid */
2102}
2103
2104static void
2105slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2106{
2107 frame->prepare = prepare_schedule;
2108 frame->check = slf_check_nop;
2109}
2110
2111static void
2112slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2113{
2114 struct coro *next = (struct coro *)slf_frame.data;
2115
2116 SvREFCNT_inc_NN (next->hv);
2117 prepare_schedule_to (aTHX_ ta, next);
2118}
2119
2120static void
2121slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2122{
2123 if (!items)
2124 croak ("Coro::schedule_to expects a coroutine argument, caught");
2125
2126 frame->data = (void *)SvSTATE (arg [0]);
2127 frame->prepare = slf_prepare_schedule_to;
2128 frame->check = slf_check_nop;
2129}
2130
2131static void
2132slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2133{
2134 api_ready (aTHX_ SvRV (coro_current));
2135
2136 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2137}
2138
2139static void
2140slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2141{
2142 frame->prepare = prepare_cede;
2143 frame->check = slf_check_nop;
2144}
2145
2146static void
2147slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2148{
2149 frame->prepare = prepare_cede_notself;
2150 frame->check = slf_check_nop;
2151}
2152
2153/*
2154 * these not obviously related functions are all rolled into one
2155 * function to increase chances that they all will call transfer with the same
2156 * stack offset
2157 * SLF stands for "schedule-like-function".
2158 */
2159static OP *
2160pp_slf (pTHX)
2161{
2162 I32 checkmark; /* mark SP to see how many elements check has pushed */
2163
2164 /* set up the slf frame, unless it has already been set-up */
2165 /* the latter happens when a new coro has been started */
2166 /* or when a new cctx was attached to an existing coroutine */
2167 if (expect_true (!slf_frame.prepare))
2168 {
2169 /* first iteration */
2170 dSP;
2171 SV **arg = PL_stack_base + TOPMARK + 1;
2172 int items = SP - arg; /* args without function object */
2173 SV *gv = *sp;
2174
2175 /* do a quick consistency check on the "function" object, and if it isn't */
2176 /* for us, divert to the real entersub */
2177 if (SvTYPE (gv) != SVt_PVGV
2178 || !GvCV (gv)
2179 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2180 return PL_ppaddr[OP_ENTERSUB](aTHX);
2181
2182 if (!(PL_op->op_flags & OPf_STACKED))
2183 {
2184 /* ampersand-form of call, use @_ instead of stack */
2185 AV *av = GvAV (PL_defgv);
2186 arg = AvARRAY (av);
2187 items = AvFILLp (av) + 1;
2188 }
2189
2190 /* now call the init function, which needs to set up slf_frame */
2191 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2192 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2193
2194 /* pop args */
2195 SP = PL_stack_base + POPMARK;
2196
2197 PUTBACK;
2198 }
2199
2200 /* now that we have a slf_frame, interpret it! */
2201 /* we use a callback system not to make the code needlessly */
2202 /* complicated, but so we can run multiple perl coros from one cctx */
2203
2204 do
2205 {
2206 struct coro_transfer_args ta;
2207
2208 slf_frame.prepare (aTHX_ &ta);
2209 TRANSFER (ta, 0);
2210
2211 checkmark = PL_stack_sp - PL_stack_base;
2212 }
2213 while (slf_frame.check (aTHX_ &slf_frame));
2214
2215 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2216
2217 /* exception handling */
2218 if (expect_false (CORO_THROW))
2219 {
2220 SV *exception = sv_2mortal (CORO_THROW);
2221
2222 CORO_THROW = 0;
2223 sv_setsv (ERRSV, exception);
2224 croak (0);
2225 }
2226
2227 /* return value handling - mostly like entersub */
2228 /* make sure we put something on the stack in scalar context */
2229 if (GIMME_V == G_SCALAR)
2230 {
2231 dSP;
2232 SV **bot = PL_stack_base + checkmark;
2233
2234 if (sp == bot) /* too few, push undef */
2235 bot [1] = &PL_sv_undef;
2236 else if (sp != bot + 1) /* too many, take last one */
2237 bot [1] = *sp;
2238
2239 SP = bot + 1;
2240
2241 PUTBACK;
2242 }
2243
2244 return NORMAL;
2245}
2246
2247static void
2248api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2249{
2250 int i;
2251 SV **arg = PL_stack_base + ax;
2252 int items = PL_stack_sp - arg + 1;
2253
2254 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2255
2256 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2257 && PL_op->op_ppaddr != pp_slf)
2258 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2259
2260 CvFLAGS (cv) |= CVf_SLF;
2261 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2262 slf_cv = cv;
2263
2264 /* we patch the op, and then re-run the whole call */
2265 /* we have to put the same argument on the stack for this to work */
2266 /* and this will be done by pp_restore */
2267 slf_restore.op_next = (OP *)&slf_restore;
2268 slf_restore.op_type = OP_CUSTOM;
2269 slf_restore.op_ppaddr = pp_restore;
2270 slf_restore.op_first = PL_op;
2271
2272 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2273
2274 if (PL_op->op_flags & OPf_STACKED)
2275 {
2276 if (items > slf_arga)
2277 {
2278 slf_arga = items;
2279 free (slf_argv);
2280 slf_argv = malloc (slf_arga * sizeof (SV *));
2281 }
2282
2283 slf_argc = items;
2284
2285 for (i = 0; i < items; ++i)
2286 slf_argv [i] = SvREFCNT_inc (arg [i]);
2287 }
2288 else
2289 slf_argc = 0;
2290
2291 PL_op->op_ppaddr = pp_slf;
2292 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2293
2294 PL_op = (OP *)&slf_restore;
2295}
1755 2296
1756/*****************************************************************************/ 2297/*****************************************************************************/
1757/* PerlIO::cede */ 2298/* PerlIO::cede */
1758 2299
1759typedef struct 2300typedef struct
… …
1827 PerlIOBuf_get_cnt, 2368 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2369 PerlIOBuf_set_ptrcnt,
1829}; 2370};
1830 2371
1831/*****************************************************************************/ 2372/*****************************************************************************/
2373/* Coro::Semaphore & Coro::Signal */
1832 2374
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2375static SV *
1843pp_restore (pTHX) 2376coro_waitarray_new (pTHX_ int count)
1844{ 2377{
1845 dSP; 2378 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2379 AV *av = newAV ();
2380 SV **ary;
1846 2381
2382 /* unfortunately, building manually saves memory */
2383 Newx (ary, 2, SV *);
2384 AvALLOC (av) = ary;
2385#if PERL_VERSION_ATLEAST (5,10,0)
2386 AvARRAY (av) = ary;
2387#else
2388 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2389 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2390 SvPVX ((SV *)av) = (char *)ary;
2391#endif
2392 AvMAX (av) = 1;
2393 AvFILLp (av) = 0;
2394 ary [0] = newSViv (count);
2395
2396 return newRV_noinc ((SV *)av);
2397}
2398
2399/* semaphore */
2400
2401static void
2402coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2403{
2404 SV *count_sv = AvARRAY (av)[0];
2405 IV count = SvIVX (count_sv);
2406
2407 count += adjust;
2408 SvIVX (count_sv) = count;
2409
2410 /* now wake up as many waiters as are expected to lock */
2411 while (count > 0 && AvFILLp (av) > 0)
2412 {
2413 SV *cb;
2414
2415 /* swap first two elements so we can shift a waiter */
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = count_sv;
2418 cb = av_shift (av);
2419
2420 if (SvOBJECT (cb))
2421 {
2422 api_ready (aTHX_ cb);
2423 --count;
2424 }
2425 else if (SvTYPE (cb) == SVt_PVCV)
2426 {
2427 dSP;
1847 PUSHMARK (SP); 2428 PUSHMARK (SP);
2429 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2430 PUTBACK;
2431 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2432 }
1848 2433
1849 EXTEND (SP, 3); 2434 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2435 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2436}
1856 2437
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2438static void
2439coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2440{
2441 /* call $sem->adjust (0) to possibly wake up some other waiters */
2442 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2443}
1858 2444
1859enum { 2445static int
1860 CORO_SLF_CUSTOM = 0, 2446slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2447{
1862 CORO_SLF_TRANSFER = 2 2448 AV *av = (AV *)frame->data;
2449 SV *count_sv = AvARRAY (av)[0];
2450
2451 /* if we are about to throw, don't actually acquire the lock, just throw */
2452 if (CORO_THROW)
2453 return 0;
2454 else if (SvIVX (count_sv) > 0)
2455 {
2456 SvSTATE_current->on_destroy = 0;
2457
2458 if (acquire)
2459 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2460 else
2461 coro_semaphore_adjust (aTHX_ av, 0);
2462
2463 return 0;
2464 }
2465 else
2466 {
2467 int i;
2468 /* if we were woken up but can't down, we look through the whole */
2469 /* waiters list and only add us if we aren't in there already */
2470 /* this avoids some degenerate memory usage cases */
2471
2472 for (i = 1; i <= AvFILLp (av); ++i)
2473 if (AvARRAY (av)[i] == SvRV (coro_current))
2474 return 1;
2475
2476 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2477 return 1;
2478 }
2479}
2480
2481static int
2482slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2483{
2484 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2485}
2486
2487static int
2488slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2489{
2490 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2491}
2492
2493static void
2494slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2495{
2496 AV *av = (AV *)SvRV (arg [0]);
2497
2498 if (SvIVX (AvARRAY (av)[0]) > 0)
2499 {
2500 frame->data = (void *)av;
2501 frame->prepare = prepare_nop;
2502 }
2503 else
2504 {
2505 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2506
2507 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2508 frame->prepare = prepare_schedule;
2509
2510 /* to avoid race conditions when a woken-up coro gets terminated */
2511 /* we arrange for a temporary on_destroy that calls adjust (0) */
2512 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2513 }
2514}
2515
2516static void
2517slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2518{
2519 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2520 frame->check = slf_check_semaphore_down;
2521}
2522
2523static void
2524slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2525{
2526 if (items >= 2)
2527 {
2528 /* callback form */
2529 AV *av = (AV *)SvRV (arg [0]);
2530 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2531
2532 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2533
2534 if (SvIVX (AvARRAY (av)[0]) > 0)
2535 coro_semaphore_adjust (aTHX_ av, 0);
2536
2537 frame->prepare = prepare_nop;
2538 frame->check = slf_check_nop;
2539 }
2540 else
2541 {
2542 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2543 frame->check = slf_check_semaphore_wait;
2544 }
2545}
2546
2547/* signal */
2548
2549static void
2550coro_signal_wake (pTHX_ AV *av, int count)
2551{
2552 SvIVX (AvARRAY (av)[0]) = 0;
2553
2554 /* now signal count waiters */
2555 while (count > 0 && AvFILLp (av) > 0)
2556 {
2557 SV *cb;
2558
2559 /* swap first two elements so we can shift a waiter */
2560 cb = AvARRAY (av)[0];
2561 AvARRAY (av)[0] = AvARRAY (av)[1];
2562 AvARRAY (av)[1] = cb;
2563
2564 cb = av_shift (av);
2565
2566 api_ready (aTHX_ cb);
2567 sv_setiv (cb, 0); /* signal waiter */
2568 SvREFCNT_dec (cb);
2569
2570 --count;
2571 }
2572}
2573
2574static int
2575slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2576{
2577 /* if we are about to throw, also stop waiting */
2578 return SvROK ((SV *)frame->data) && !CORO_THROW;
2579}
2580
2581static void
2582slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2583{
2584 AV *av = (AV *)SvRV (arg [0]);
2585
2586 if (SvIVX (AvARRAY (av)[0]))
2587 {
2588 SvIVX (AvARRAY (av)[0]) = 0;
2589 frame->prepare = prepare_nop;
2590 frame->check = slf_check_nop;
2591 }
2592 else
2593 {
2594 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2595
2596 av_push (av, waiter);
2597
2598 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2599 frame->prepare = prepare_schedule;
2600 frame->check = slf_check_signal_wait;
2601 }
2602}
2603
2604/*****************************************************************************/
2605/* Coro::AIO */
2606
2607#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2608
2609/* helper storage struct */
2610struct io_state
2611{
2612 int errorno;
2613 I32 laststype; /* U16 in 5.10.0 */
2614 int laststatval;
2615 Stat_t statcache;
1863}; 2616};
1864 2617
1865/* declare prototype */ 2618static void
1866XS(XS_Coro__State__set_stacklevel); 2619coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 2620{
2621 dXSARGS;
2622 AV *state = (AV *)GENSUB_ARG;
2623 SV *coro = av_pop (state);
2624 SV *data_sv = newSV (sizeof (struct io_state));
2625
2626 av_extend (state, items - 1);
2627
2628 sv_upgrade (data_sv, SVt_PV);
2629 SvCUR_set (data_sv, sizeof (struct io_state));
2630 SvPOK_only (data_sv);
2631
2632 {
2633 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2634
2635 data->errorno = errno;
2636 data->laststype = PL_laststype;
2637 data->laststatval = PL_laststatval;
2638 data->statcache = PL_statcache;
2639 }
2640
2641 /* now build the result vector out of all the parameters and the data_sv */
2642 {
2643 int i;
2644
2645 for (i = 0; i < items; ++i)
2646 av_push (state, SvREFCNT_inc_NN (ST (i)));
2647 }
2648
2649 av_push (state, data_sv);
2650
2651 api_ready (aTHX_ coro);
2652 SvREFCNT_dec (coro);
2653 SvREFCNT_dec ((AV *)state);
2654}
2655
2656static int
2657slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2658{
2659 AV *state = (AV *)frame->data;
2660
2661 /* if we are about to throw, return early */
2662 /* this does not cancel the aio request, but at least */
2663 /* it quickly returns */
2664 if (CORO_THROW)
2665 return 0;
2666
2667 /* one element that is an RV? repeat! */
2668 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2669 return 1;
2670
2671 /* restore status */
2672 {
2673 SV *data_sv = av_pop (state);
2674 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2675
2676 errno = data->errorno;
2677 PL_laststype = data->laststype;
2678 PL_laststatval = data->laststatval;
2679 PL_statcache = data->statcache;
2680
2681 SvREFCNT_dec (data_sv);
2682 }
2683
2684 /* push result values */
2685 {
1877 dSP; 2686 dSP;
1878 struct transfer_args ta; 2687 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 SV *gv = *sp;
1884 2688
1885 /* do a quick consistency check on the "function" object, and if it isn't */ 2689 EXTEND (SP, AvFILLp (state) + 1);
1886 /* for us, divert to the real entersub */ 2690 for (i = 0; i <= AvFILLp (state); ++i)
1887 if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel) 2691 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1888 return PL_ppaddr[OP_ENTERSUB](aTHX);
1889 2692
1890 /* pop args */
1891 SP = PL_stack_base + POPMARK;
1892
1893 if (!(PL_op->op_flags & OPf_STACKED))
1894 {
1895 /* ampersand-form of call, use @_ instead of stack */
1896 AV *av = GvAV (PL_defgv);
1897 arg = AvARRAY (av);
1898 items = AvFILLp (av) + 1;
1899 }
1900
1901 PUTBACK; 2693 PUTBACK;
2694 }
1902 2695
1903 if (!ix) 2696 return 0;
1904 { 2697}
1905 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2698
1906 ix = slf->prepare (aTHX_ arg, items); 2699static void
2700slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2701{
2702 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2703 SV *coro_hv = SvRV (coro_current);
2704 struct coro *coro = SvSTATE_hv (coro_hv);
2705
2706 /* put our coroutine id on the state arg */
2707 av_push (state, SvREFCNT_inc_NN (coro_hv));
2708
2709 /* first see whether we have a non-zero priority and set it as AIO prio */
2710 if (coro->prio)
1907 } 2711 {
2712 dSP;
1908 2713
1909 switch (ix) 2714 static SV *prio_cv;
2715 static SV *prio_sv;
2716
2717 if (expect_false (!prio_cv))
2718 {
2719 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2720 prio_sv = newSViv (0);
2721 }
2722
2723 PUSHMARK (SP);
2724 sv_setiv (prio_sv, coro->prio);
2725 XPUSHs (prio_sv);
2726
2727 PUTBACK;
2728 call_sv (prio_cv, G_VOID | G_DISCARD);
1910 { 2729 }
1911 case CORO_SLF_SET_STACKLEVEL:
1912 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913 break;
1914 2730
1915 case CORO_SLF_TRANSFER: 2731 /* now call the original request */
1916 if (items != 2) 2732 {
1917 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2733 dSP;
2734 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2735 int i;
1918 2736
1919 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2737 PUSHMARK (SP);
1920 break;
1921 2738
1922 case CORO_SLF_SCHEDULE: 2739 /* first push all args to the stack */
1923 prepare_schedule (aTHX_ &ta); 2740 EXTEND (SP, items + 1);
1924 break;
1925 2741
1926 case CORO_SLF_CEDE: 2742 for (i = 0; i < items; ++i)
1927 prepare_cede (aTHX_ &ta); 2743 PUSHs (arg [i]);
1928 break;
1929 2744
1930 case CORO_SLF_CEDE_NOTSELF: 2745 /* now push the callback closure */
1931 prepare_cede_notself (aTHX_ &ta); 2746 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1932 break;
1933 2747
1934 default: 2748 /* now call the AIO function - we assume our request is uncancelable */
1935 abort ();
1936 }
1937
1938 do
1939 TRANSFER (ta, 0);
1940 while (slf && slf->check (aTHX));
1941
1942 SPAGAIN;
1943
1944 PUTBACK; 2749 PUTBACK;
1945 SLF_TAIL; 2750 call_sv ((SV *)req, G_VOID | G_DISCARD);
1946 SPAGAIN; 2751 }
1947 RETURN;
1948}
1949 2752
1950static void 2753 /* now that the requets is going, we loop toll we have a result */
1951coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2754 frame->data = (void *)state;
1952{ 2755 frame->prepare = prepare_schedule;
1953 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2756 frame->check = slf_check_aio_req;
1954
1955 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956 slf_cv = cv;
1957
1958 /* we patch the op, and then re-run the whole call */
1959 /* we have to put the same argument on the stack for this to work */
1960 /* and this will be done by pp_restore */
1961 slf_restore.op_next = (OP *)&slf_restore;
1962 slf_restore.op_type = OP_NULL;
1963 slf_restore.op_ppaddr = pp_restore;
1964 slf_restore.op_first = PL_op;
1965
1966 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969 PL_op->op_ppaddr = pp_slf;
1970 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972 PL_op = (OP *)&slf_restore;
1973} 2757}
1974 2758
1975static void 2759static void
1976api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2760coro_aio_req_xs (pTHX_ CV *cv)
1977{ 2761{
1978 CvXSUBANY (cv).any_ptr = (void *)slf; 2762 dXSARGS;
1979 coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items); 2763
2764 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2765
2766 XSRETURN_EMPTY;
1980} 2767}
2768
2769/*****************************************************************************/
2770
2771#if CORO_CLONE
2772# include "clone.c"
2773#endif
1981 2774
1982MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2775MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1983 2776
1984PROTOTYPES: DISABLE 2777PROTOTYPES: DISABLE
1985 2778
1986BOOT: 2779BOOT:
1987{ 2780{
1988#ifdef USE_ITHREADS 2781#ifdef USE_ITHREADS
1989 MUTEX_INIT (&coro_lock);
1990# if CORO_PTHREAD 2782# if CORO_PTHREAD
1991 coro_thx = PERL_GET_CONTEXT; 2783 coro_thx = PERL_GET_CONTEXT;
1992# endif 2784# endif
1993#endif 2785#endif
1994 BOOT_PAGESIZE; 2786 BOOT_PAGESIZE;
2787
2788 cctx_current = cctx_new_empty ();
1995 2789
1996 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2790 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1997 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2791 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1998 2792
1999 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2793 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2015 main_top_env = PL_top_env; 2809 main_top_env = PL_top_env;
2016 2810
2017 while (main_top_env->je_prev) 2811 while (main_top_env->je_prev)
2018 main_top_env = main_top_env->je_prev; 2812 main_top_env = main_top_env->je_prev;
2019 2813
2814 {
2815 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2816
2817 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2818 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2819
2820 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2821 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2822 }
2823
2020 coroapi.ver = CORO_API_VERSION; 2824 coroapi.ver = CORO_API_VERSION;
2021 coroapi.rev = CORO_API_REVISION; 2825 coroapi.rev = CORO_API_REVISION;
2826
2022 coroapi.transfer = api_transfer; 2827 coroapi.transfer = api_transfer;
2828
2829 coroapi.sv_state = SvSTATE_;
2023 coroapi.execute_slf = api_execute_slf; 2830 coroapi.execute_slf = api_execute_slf;
2831 coroapi.prepare_nop = prepare_nop;
2832 coroapi.prepare_schedule = prepare_schedule;
2833 coroapi.prepare_cede = prepare_cede;
2834 coroapi.prepare_cede_notself = prepare_cede_notself;
2024 2835
2025 { 2836 {
2026 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2837 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027 2838
2028 if (!svp) croak ("Time::HiRes is required"); 2839 if (!svp) croak ("Time::HiRes is required");
… …
2034 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2845 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2035} 2846}
2036 2847
2037SV * 2848SV *
2038new (char *klass, ...) 2849new (char *klass, ...)
2850 ALIAS:
2851 Coro::new = 1
2039 CODE: 2852 CODE:
2040{ 2853{
2041 struct coro *coro; 2854 struct coro *coro;
2042 MAGIC *mg; 2855 MAGIC *mg;
2043 HV *hv; 2856 HV *hv;
2857 CV *cb;
2044 int i; 2858 int i;
2859
2860 if (items > 1)
2861 {
2862 cb = coro_sv_2cv (aTHX_ ST (1));
2863
2864 if (!ix)
2865 {
2866 if (CvISXSUB (cb))
2867 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2868
2869 if (!CvROOT (cb))
2870 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2871 }
2872 }
2045 2873
2046 Newz (0, coro, 1, struct coro); 2874 Newz (0, coro, 1, struct coro);
2047 coro->args = newAV (); 2875 coro->args = newAV ();
2048 coro->flags = CF_NEW; 2876 coro->flags = CF_NEW;
2049 2877
… …
2054 coro->hv = hv = newHV (); 2882 coro->hv = hv = newHV ();
2055 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2883 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056 mg->mg_flags |= MGf_DUP; 2884 mg->mg_flags |= MGf_DUP;
2057 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2885 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2058 2886
2887 if (items > 1)
2888 {
2059 av_extend (coro->args, items - 1); 2889 av_extend (coro->args, items - 1 + ix - 1);
2890
2891 if (ix)
2892 {
2893 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2894 cb = cv_coro_run;
2895 }
2896
2897 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2898
2060 for (i = 1; i < items; i++) 2899 for (i = 2; i < items; i++)
2061 av_push (coro->args, newSVsv (ST (i))); 2900 av_push (coro->args, newSVsv (ST (i)));
2901 }
2062} 2902}
2063 OUTPUT: 2903 OUTPUT:
2064 RETVAL 2904 RETVAL
2065 2905
2066void 2906void
2067_set_stacklevel (...) 2907transfer (...)
2068 ALIAS: 2908 PROTOTYPE: $$
2069 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 2909 CODE:
2070 Coro::State::transfer = CORO_SLF_TRANSFER 2910 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2071 Coro::schedule = CORO_SLF_SCHEDULE
2072 Coro::cede = CORO_SLF_CEDE
2073 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2074 CODE:
2075 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2076 2911
2077bool 2912bool
2078_destroy (SV *coro_sv) 2913_destroy (SV *coro_sv)
2079 CODE: 2914 CODE:
2080 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2915 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2085_exit (int code) 2920_exit (int code)
2086 PROTOTYPE: $ 2921 PROTOTYPE: $
2087 CODE: 2922 CODE:
2088 _exit (code); 2923 _exit (code);
2089 2924
2925SV *
2926clone (Coro::State coro)
2927 CODE:
2928{
2929#if CORO_CLONE
2930 struct coro *ncoro = coro_clone (coro);
2931 MAGIC *mg;
2932 /* TODO: too much duplication */
2933 ncoro->hv = newHV ();
2934 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2935 mg->mg_flags |= MGf_DUP;
2936 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2937#else
2938 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2939#endif
2940}
2941 OUTPUT:
2942 RETVAL
2943
2090int 2944int
2091cctx_stacksize (int new_stacksize = 0) 2945cctx_stacksize (int new_stacksize = 0)
2946 PROTOTYPE: ;$
2092 CODE: 2947 CODE:
2093 RETVAL = cctx_stacksize; 2948 RETVAL = cctx_stacksize;
2094 if (new_stacksize) 2949 if (new_stacksize)
2095 { 2950 {
2096 cctx_stacksize = new_stacksize; 2951 cctx_stacksize = new_stacksize;
… …
2099 OUTPUT: 2954 OUTPUT:
2100 RETVAL 2955 RETVAL
2101 2956
2102int 2957int
2103cctx_max_idle (int max_idle = 0) 2958cctx_max_idle (int max_idle = 0)
2959 PROTOTYPE: ;$
2104 CODE: 2960 CODE:
2105 RETVAL = cctx_max_idle; 2961 RETVAL = cctx_max_idle;
2106 if (max_idle > 1) 2962 if (max_idle > 1)
2107 cctx_max_idle = max_idle; 2963 cctx_max_idle = max_idle;
2108 OUTPUT: 2964 OUTPUT:
2109 RETVAL 2965 RETVAL
2110 2966
2111int 2967int
2112cctx_count () 2968cctx_count ()
2969 PROTOTYPE:
2113 CODE: 2970 CODE:
2114 RETVAL = cctx_count; 2971 RETVAL = cctx_count;
2115 OUTPUT: 2972 OUTPUT:
2116 RETVAL 2973 RETVAL
2117 2974
2118int 2975int
2119cctx_idle () 2976cctx_idle ()
2977 PROTOTYPE:
2120 CODE: 2978 CODE:
2121 RETVAL = cctx_idle; 2979 RETVAL = cctx_idle;
2122 OUTPUT: 2980 OUTPUT:
2123 RETVAL 2981 RETVAL
2124 2982
2125void 2983void
2126list () 2984list ()
2985 PROTOTYPE:
2127 PPCODE: 2986 PPCODE:
2128{ 2987{
2129 struct coro *coro; 2988 struct coro *coro;
2130 for (coro = coro_first; coro; coro = coro->next) 2989 for (coro = coro_first; coro; coro = coro->next)
2131 if (coro->hv) 2990 if (coro->hv)
… …
2193 3052
2194void 3053void
2195throw (Coro::State self, SV *throw = &PL_sv_undef) 3054throw (Coro::State self, SV *throw = &PL_sv_undef)
2196 PROTOTYPE: $;$ 3055 PROTOTYPE: $;$
2197 CODE: 3056 CODE:
3057{
3058 struct coro *current = SvSTATE_current;
3059 SV **throwp = self == current ? &CORO_THROW : &self->except;
2198 SvREFCNT_dec (self->throw); 3060 SvREFCNT_dec (*throwp);
2199 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3061 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3062}
2200 3063
2201void 3064void
2202api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3065api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3066 PROTOTYPE: $;$
2203 C_ARGS: aTHX_ coro, flags 3067 C_ARGS: aTHX_ coro, flags
2204 3068
2205SV * 3069SV *
2206has_cctx (Coro::State coro) 3070has_cctx (Coro::State coro)
2207 PROTOTYPE: $ 3071 PROTOTYPE: $
2208 CODE: 3072 CODE:
2209 RETVAL = boolSV (!!coro->cctx); 3073 /* maybe manage the running flag differently */
3074 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2210 OUTPUT: 3075 OUTPUT:
2211 RETVAL 3076 RETVAL
2212 3077
2213int 3078int
2214is_traced (Coro::State coro) 3079is_traced (Coro::State coro)
… …
2232 OUTPUT: 3097 OUTPUT:
2233 RETVAL 3098 RETVAL
2234 3099
2235void 3100void
2236force_cctx () 3101force_cctx ()
3102 PROTOTYPE:
2237 CODE: 3103 CODE:
2238 struct coro *coro = SvSTATE (coro_current);
2239 coro->cctx->idle_sp = 0; 3104 cctx_current->idle_sp = 0;
2240 3105
2241void 3106void
2242swap_defsv (Coro::State self) 3107swap_defsv (Coro::State self)
2243 PROTOTYPE: $ 3108 PROTOTYPE: $
2244 ALIAS: 3109 ALIAS:
2245 swap_defav = 1 3110 swap_defav = 1
2246 CODE: 3111 CODE:
2247 if (!self->slot) 3112 if (!self->slot)
2248 croak ("cannot swap state with coroutine that has no saved state"); 3113 croak ("cannot swap state with coroutine that has no saved state,");
2249 else 3114 else
2250 { 3115 {
2251 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3116 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3117 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253 3118
2254 SV *tmp = *src; *src = *dst; *dst = tmp; 3119 SV *tmp = *src; *src = *dst; *dst = tmp;
2255 } 3120 }
2256 3121
3122
2257MODULE = Coro::State PACKAGE = Coro 3123MODULE = Coro::State PACKAGE = Coro
2258 3124
2259BOOT: 3125BOOT:
2260{ 3126{
2261 int i; 3127 int i;
2262 3128
2263 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3129 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3130 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266 3131 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3132 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2267 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3133 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2268 SvREADONLY_on (coro_current); 3134 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3135 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3136 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3137 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3138
3139 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3140 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3141 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3142 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2269 3143
2270 coro_stash = gv_stashpv ("Coro", TRUE); 3144 coro_stash = gv_stashpv ("Coro", TRUE);
2271 3145
2272 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3146 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2273 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3147 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2281 3155
2282 { 3156 {
2283 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3157 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2284 3158
2285 coroapi.schedule = api_schedule; 3159 coroapi.schedule = api_schedule;
3160 coroapi.schedule_to = api_schedule_to;
2286 coroapi.cede = api_cede; 3161 coroapi.cede = api_cede;
2287 coroapi.cede_notself = api_cede_notself; 3162 coroapi.cede_notself = api_cede_notself;
2288 coroapi.ready = api_ready; 3163 coroapi.ready = api_ready;
2289 coroapi.is_ready = api_is_ready; 3164 coroapi.is_ready = api_is_ready;
2290 coroapi.nready = coro_nready; 3165 coroapi.nready = coro_nready;
2291 coroapi.current = coro_current; 3166 coroapi.current = coro_current;
2292 3167
2293 GCoroAPI = &coroapi; 3168 /*GCoroAPI = &coroapi;*/
2294 sv_setiv (sv, (IV)&coroapi); 3169 sv_setiv (sv, (IV)&coroapi);
2295 SvREADONLY_on (sv); 3170 SvREADONLY_on (sv);
2296 } 3171 }
2297} 3172}
3173
3174void
3175terminate (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3178
3179void
3180schedule (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3183
3184void
3185schedule_to (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3188
3189void
3190cede_to (...)
3191 CODE:
3192 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3193
3194void
3195cede (...)
3196 CODE:
3197 CORO_EXECUTE_SLF_XS (slf_init_cede);
3198
3199void
3200cede_notself (...)
3201 CODE:
3202 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3203
3204void
3205_cancel (Coro::State self)
3206 CODE:
3207 coro_state_destroy (aTHX_ self);
3208 coro_call_on_destroy (aTHX_ self);
2298 3209
2299void 3210void
2300_set_current (SV *current) 3211_set_current (SV *current)
2301 PROTOTYPE: $ 3212 PROTOTYPE: $
2302 CODE: 3213 CODE:
… …
2305 3216
2306void 3217void
2307_set_readyhook (SV *hook) 3218_set_readyhook (SV *hook)
2308 PROTOTYPE: $ 3219 PROTOTYPE: $
2309 CODE: 3220 CODE:
2310 LOCK;
2311 SvREFCNT_dec (coro_readyhook); 3221 SvREFCNT_dec (coro_readyhook);
2312 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3222 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2313 UNLOCK;
2314 3223
2315int 3224int
2316prio (Coro::State coro, int newprio = 0) 3225prio (Coro::State coro, int newprio = 0)
3226 PROTOTYPE: $;$
2317 ALIAS: 3227 ALIAS:
2318 nice = 1 3228 nice = 1
2319 CODE: 3229 CODE:
2320{ 3230{
2321 RETVAL = coro->prio; 3231 RETVAL = coro->prio;
… …
2348 CODE: 3258 CODE:
2349 RETVAL = coro_nready; 3259 RETVAL = coro_nready;
2350 OUTPUT: 3260 OUTPUT:
2351 RETVAL 3261 RETVAL
2352 3262
2353# for async_pool speedup
2354void 3263void
2355_pool_1 (SV *cb) 3264_pool_handler (...)
2356 CODE: 3265 CODE:
2357{ 3266 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2358 struct coro *coro = SvSTATE (coro_current);
2359 HV *hv = (HV *)SvRV (coro_current);
2360 AV *defav = GvAV (PL_defgv);
2361 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362 AV *invoke_av;
2363 int i, len;
2364 3267
2365 if (!invoke) 3268void
3269async_pool (SV *cv, ...)
3270 PROTOTYPE: &@
3271 PPCODE:
3272{
3273 HV *hv = (HV *)av_pop (av_async_pool);
3274 AV *av = newAV ();
3275 SV *cb = ST (0);
3276 int i;
3277
3278 av_extend (av, items - 2);
3279 for (i = 1; i < items; ++i)
3280 av_push (av, SvREFCNT_inc_NN (ST (i)));
3281
3282 if ((SV *)hv == &PL_sv_undef)
2366 { 3283 {
2367 SV *old = PL_diehook; 3284 PUSHMARK (SP);
2368 PL_diehook = 0; 3285 EXTEND (SP, 2);
2369 SvREFCNT_dec (old); 3286 PUSHs (sv_Coro);
2370 croak ("\3async_pool terminate\2\n"); 3287 PUSHs ((SV *)cv_pool_handler);
3288 PUTBACK;
3289 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3290 SPAGAIN;
3291
3292 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2371 } 3293 }
2372 3294
2373 SvREFCNT_dec (coro->saved_deffh);
2374 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 invoke_av = (AV *)SvRV (invoke);
2380 len = av_len (invoke_av);
2381
2382 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384 if (len > 0)
2385 { 3295 {
2386 av_fill (defav, len - 1); 3296 struct coro *coro = SvSTATE_hv (hv);
2387 for (i = 0; i < len; ++i) 3297
2388 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3298 assert (!coro->invoke_cb);
3299 assert (!coro->invoke_av);
3300 coro->invoke_cb = SvREFCNT_inc (cb);
3301 coro->invoke_av = av;
2389 } 3302 }
2390 3303
3304 api_ready (aTHX_ (SV *)hv);
3305
3306 if (GIMME_V != G_VOID)
3307 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3308 else
2391 SvREFCNT_dec (invoke); 3309 SvREFCNT_dec (hv);
2392} 3310}
2393 3311
2394void 3312SV *
2395_pool_2 (SV *cb) 3313rouse_cb ()
3314 PROTOTYPE:
2396 CODE: 3315 CODE:
2397{ 3316 RETVAL = coro_new_rouse_cb (aTHX);
2398 struct coro *coro = SvSTATE (coro_current);
2399
2400 sv_setsv (cb, &PL_sv_undef);
2401
2402 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403 coro->saved_deffh = 0;
2404
2405 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407 {
2408 SV *old = PL_diehook;
2409 PL_diehook = 0;
2410 SvREFCNT_dec (old);
2411 croak ("\3async_pool terminate\2\n");
2412 }
2413
2414 av_clear (GvAV (PL_defgv));
2415 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 av_push (av_async_pool, newSVsv (coro_current));
2424}
2425
2426#if 0
2427
2428void
2429_generator_call (...)
2430 PROTOTYPE: @
2431 PPCODE:
2432 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433 xxxx
2434 abort ();
2435
2436SV *
2437gensub (SV *sub, ...)
2438 PROTOTYPE: &;@
2439 CODE:
2440{
2441 struct coro *coro;
2442 MAGIC *mg;
2443 CV *xcv;
2444 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445 int i;
2446
2447 CvGV (ncv) = CvGV (cv);
2448 CvFILE (ncv) = CvFILE (cv);
2449
2450 Newz (0, coro, 1, struct coro);
2451 coro->args = newAV ();
2452 coro->flags = CF_NEW;
2453
2454 av_extend (coro->args, items - 1);
2455 for (i = 1; i < items; i++)
2456 av_push (coro->args, newSVsv (ST (i)));
2457
2458 CvISXSUB_on (ncv);
2459 CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463 CvXSUB (ncv) = CvXSUB (xcv);
2464 CvANON_on (ncv);
2465
2466 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467 RETVAL = newRV_noinc ((SV *)ncv);
2468}
2469 OUTPUT: 3317 OUTPUT:
2470 RETVAL 3318 RETVAL
2471 3319
2472#endif
2473
2474
2475MODULE = Coro::State PACKAGE = Coro::AIO
2476
2477void 3320void
2478_get_state (SV *self) 3321rouse_wait (...)
3322 PROTOTYPE: ;$
2479 PPCODE: 3323 PPCODE:
2480{ 3324 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2481 AV *defav = GvAV (PL_defgv);
2482 AV *av = newAV ();
2483 int i;
2484 SV *data_sv = newSV (sizeof (struct io_state));
2485 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2486 SvCUR_set (data_sv, sizeof (struct io_state));
2487 SvPOK_only (data_sv);
2488 3325
2489 data->errorno = errno;
2490 data->laststype = PL_laststype;
2491 data->laststatval = PL_laststatval;
2492 data->statcache = PL_statcache;
2493 3326
2494 av_extend (av, AvFILLp (defav) + 1 + 1); 3327MODULE = Coro::State PACKAGE = PerlIO::cede
2495 3328
2496 for (i = 0; i <= AvFILLp (defav); ++i) 3329BOOT:
2497 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3330 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2498 3331
2499 av_push (av, data_sv);
2500 3332
2501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3333MODULE = Coro::State PACKAGE = Coro::Semaphore
2502 3334
2503 api_ready (aTHX_ self); 3335SV *
2504} 3336new (SV *klass, SV *count = 0)
3337 CODE:
3338 RETVAL = sv_bless (
3339 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3340 GvSTASH (CvGV (cv))
3341 );
3342 OUTPUT:
3343 RETVAL
3344
3345# helper for Coro::Channel
3346SV *
3347_alloc (int count)
3348 CODE:
3349 RETVAL = coro_waitarray_new (aTHX_ count);
3350 OUTPUT:
3351 RETVAL
3352
3353SV *
3354count (SV *self)
3355 CODE:
3356 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3357 OUTPUT:
3358 RETVAL
2505 3359
2506void 3360void
2507_set_state (SV *state) 3361up (SV *self, int adjust = 1)
2508 PROTOTYPE: $ 3362 ALIAS:
3363 adjust = 1
3364 CODE:
3365 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3366
3367void
3368down (...)
3369 CODE:
3370 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3371
3372void
3373wait (...)
3374 CODE:
3375 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3376
3377void
3378try (SV *self)
3379 PPCODE:
3380{
3381 AV *av = (AV *)SvRV (self);
3382 SV *count_sv = AvARRAY (av)[0];
3383 IV count = SvIVX (count_sv);
3384
3385 if (count > 0)
3386 {
3387 --count;
3388 SvIVX (count_sv) = count;
3389 XSRETURN_YES;
3390 }
3391 else
3392 XSRETURN_NO;
3393}
3394
3395void
3396waiters (SV *self)
3397 PPCODE:
3398{
3399 AV *av = (AV *)SvRV (self);
3400 int wcount = AvFILLp (av) + 1 - 1;
3401
3402 if (GIMME_V == G_SCALAR)
3403 XPUSHs (sv_2mortal (newSViv (wcount)));
3404 else
3405 {
3406 int i;
3407 EXTEND (SP, wcount);
3408 for (i = 1; i <= wcount; ++i)
3409 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3410 }
3411}
3412
3413MODULE = Coro::State PACKAGE = Coro::Signal
3414
3415SV *
3416new (SV *klass)
2509 PPCODE: 3417 CODE:
3418 RETVAL = sv_bless (
3419 coro_waitarray_new (aTHX_ 0),
3420 GvSTASH (CvGV (cv))
3421 );
3422 OUTPUT:
3423 RETVAL
3424
3425void
3426wait (...)
3427 CODE:
3428 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3429
3430void
3431broadcast (SV *self)
3432 CODE:
2510{ 3433{
2511 AV *av = (AV *)SvRV (state); 3434 AV *av = (AV *)SvRV (self);
2512 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3435 coro_signal_wake (aTHX_ av, AvFILLp (av));
2513 int i; 3436}
2514 3437
2515 errno = data->errorno; 3438void
2516 PL_laststype = data->laststype; 3439send (SV *self)
2517 PL_laststatval = data->laststatval; 3440 CODE:
2518 PL_statcache = data->statcache; 3441{
3442 AV *av = (AV *)SvRV (self);
2519 3443
2520 EXTEND (SP, AvFILLp (av)); 3444 if (AvFILLp (av))
2521 for (i = 0; i < AvFILLp (av); ++i) 3445 coro_signal_wake (aTHX_ av, 1);
2522 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3446 else
3447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2523} 3448}
3449
3450IV
3451awaited (SV *self)
3452 CODE:
3453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3454 OUTPUT:
3455 RETVAL
2524 3456
2525 3457
2526MODULE = Coro::State PACKAGE = Coro::AnyEvent 3458MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527 3459
2528BOOT: 3460BOOT:
2529 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3461 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530 3462
2531SV * 3463void
2532_schedule (...) 3464_schedule (...)
2533 PROTOTYPE: @
2534 CODE: 3465 CODE:
2535{ 3466{
2536 static int incede; 3467 static int incede;
2537 3468
2538 api_cede_notself (aTHX); 3469 api_cede_notself (aTHX);
… …
2544 sv_setsv (sv_activity, &PL_sv_undef); 3475 sv_setsv (sv_activity, &PL_sv_undef);
2545 if (coro_nready >= incede) 3476 if (coro_nready >= incede)
2546 { 3477 {
2547 PUSHMARK (SP); 3478 PUSHMARK (SP);
2548 PUTBACK; 3479 PUTBACK;
2549 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3480 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2550 SPAGAIN;
2551 } 3481 }
2552 3482
2553 --incede; 3483 --incede;
2554} 3484}
2555 3485
2556 3486
2557MODULE = Coro::State PACKAGE = PerlIO::cede 3487MODULE = Coro::State PACKAGE = Coro::AIO
2558 3488
2559BOOT: 3489void
2560 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3490_register (char *target, char *proto, SV *req)
3491 CODE:
3492{
3493 CV *req_cv = coro_sv_2cv (aTHX_ req);
3494 /* newXSproto doesn't return the CV on 5.8 */
3495 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3496 sv_setpv ((SV *)slf_cv, proto);
3497 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3498}
2561 3499

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