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Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC vs.
Revision 1.334 by root, Fri Nov 28 23:30:55 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline 143# define INLINE static inline
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 162#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 163
174static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
175 169
176static U32 cctx_gen; 170static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 174static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 177
185struct transfer_args 178static AV *av_destroy; /* destruction queue */
186{ 179static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
188};
189 181
190static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 184static SV *rv_diehook;
193static SV *rv_warnhook; 185static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
195 187
196/* async_pool helper stuff */ 188/* async_pool helper stuff */
197static SV *sv_pool_rss; 189static SV *sv_pool_rss;
198static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
200 196
201/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
202static SV *sv_activity; 198static SV *sv_activity;
203 199
204static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 210};
215 211
216/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 213typedef struct coro_cctx
214{
218 struct coro_cctx *next; 215 struct coro_cctx *next;
219 216
220 /* the stack */ 217 /* the stack */
221 void *sptr; 218 void *sptr;
222 size_t ssize; 219 size_t ssize;
… …
231#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
232 int valgrind_id; 229 int valgrind_id;
233#endif 230#endif
234 unsigned char flags; 231 unsigned char flags;
235} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
236 237
237enum { 238enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 243};
243 244
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 246typedef struct
247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 259
257/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
258struct coro { 261struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 263 coro_cctx *cctx;
261 264
262 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 267 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
265 269
270 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
270 276
271 /* statistics */ 277 /* statistics */
272 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
273 279
274 /* coro process data */ 280 /* coro process data */
275 int prio; 281 int prio;
276 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
277 284
278 /* async_pool */ 285 /* async_pool */
279 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
280 289
281 /* linked list */ 290 /* linked list */
282 struct coro *next, *prev; 291 struct coro *next, *prev;
283}; 292};
284 293
285typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
287 301
288/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
289 303
290#define PRIO_MAX 3 304#define PRIO_MAX 3
291#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
296 310
297/* for Coro.pm */ 311/* for Coro.pm */
298static SV *coro_current; 312static SV *coro_current;
299static SV *coro_readyhook; 313static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
303 318
304/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
305 320
306static SV * 321static SV *
307coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 346 get_hv (name, create);
332#endif 347#endif
333 return get_hv (name, create); 348 return get_hv (name, create);
334} 349}
335 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360/*****************************************************************************/
361/* magic glue */
362
363#define CORO_MAGIC_type_cv 26
364#define CORO_MAGIC_type_state PERL_MAGIC_ext
365
366#define CORO_MAGIC_NN(sv, type) \
367 (expect_true (SvMAGIC (sv)->mg_type == type) \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type))
370
371#define CORO_MAGIC(sv, type) \
372 (expect_true (SvMAGIC (sv)) \
373 ? CORO_MAGIC_NN (sv, type) \
374 : 0)
375
376#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
377#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
378
379INLINE struct coro *
380SvSTATE_ (pTHX_ SV *coro)
381{
382 HV *stash;
383 MAGIC *mg;
384
385 if (SvROK (coro))
386 coro = SvRV (coro);
387
388 if (expect_false (SvTYPE (coro) != SVt_PVHV))
389 croak ("Coro::State object required");
390
391 stash = SvSTASH (coro);
392 if (expect_false (stash != coro_stash && stash != coro_state_stash))
393 {
394 /* very slow, but rare, check */
395 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
396 croak ("Coro::State object required");
397 }
398
399 mg = CORO_MAGIC_state (coro);
400 return (struct coro *)mg->mg_ptr;
401}
402
403#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
404
405/* faster than SvSTATE, but expects a coroutine hv */
406#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
407#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
408
409/*****************************************************************************/
410/* padlist management and caching */
411
336static AV * 412static AV *
337coro_clone_padlist (pTHX_ CV *cv) 413coro_derive_padlist (pTHX_ CV *cv)
338{ 414{
339 AV *padlist = CvPADLIST (cv); 415 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 416 AV *newpadlist, *newpad;
341 417
342 newpadlist = newAV (); 418 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 423 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 424#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 425 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 426 --AvFILLp (padlist);
351 427
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 428 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 429 av_store (newpadlist, 1, (SV *)newpad);
354 430
355 return newpadlist; 431 return newpadlist;
356} 432}
357 433
358static void 434static void
359free_padlist (pTHX_ AV *padlist) 435free_padlist (pTHX_ AV *padlist)
360{ 436{
361 /* may be during global destruction */ 437 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 438 if (!IN_DESTRUCT)
363 { 439 {
364 I32 i = AvFILLp (padlist); 440 I32 i = AvFILLp (padlist);
365 while (i >= 0) 441
442 while (i > 0) /* special-case index 0 */
366 { 443 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 444 /* we try to be extra-careful here */
368 if (svp) 445 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 446 I32 j = AvFILLp (av);
370 SV *sv; 447
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 448 while (j >= 0)
449 SvREFCNT_dec (AvARRAY (av)[j--]);
450
451 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 452 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 453 }
377 454
455 SvREFCNT_dec (AvARRAY (padlist)[0]);
456
457 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 458 SvREFCNT_dec ((SV*)padlist);
379 } 459 }
380} 460}
381 461
382static int 462static int
… …
391 471
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 472 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 473
394 return 0; 474 return 0;
395} 475}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 476
400static MGVTBL coro_cv_vtbl = { 477static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 478 0, 0, 0, 0,
402 coro_cv_free 479 coro_cv_free
403}; 480};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 481
441/* the next two functions merely cache the padlists */ 482/* the next two functions merely cache the padlists */
442static void 483static void
443get_padlist (pTHX_ CV *cv) 484get_padlist (pTHX_ CV *cv)
444{ 485{
… …
450 else 491 else
451 { 492 {
452#if CORO_PREFER_PERL_FUNCTIONS 493#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 494 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 495 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 496 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 497 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 498 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 499 SvREFCNT_dec (cp);
459#else 500#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 501 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 502#endif
462 } 503 }
463} 504}
464 505
465static void 506static void
… …
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 513 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
473 514
474 av = (AV *)mg->mg_obj; 515 av = (AV *)mg->mg_obj;
475 516
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 517 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 518 av_extend (av, AvFILLp (av) + 1);
478 519
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 520 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 521}
481 522
482/** load & save, init *******************************************************/ 523/** load & save, init *******************************************************/
… …
487 perl_slots *slot = c->slot; 528 perl_slots *slot = c->slot;
488 c->slot = 0; 529 c->slot = 0;
489 530
490 PL_mainstack = c->mainstack; 531 PL_mainstack = c->mainstack;
491 532
492 GvSV (PL_defgv) = slot->defsv; 533 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 534 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 535 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 536 GvSV (irsgv) = slot->irsgv;
537 GvHV (PL_hintgv) = slot->hinthv;
496 538
497 #define VAR(name,type) PL_ ## name = slot->name; 539 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 540 # include "state.h"
499 #undef VAR 541 #undef VAR
500 542
… …
511 CvPADLIST (cv) = (AV *)POPs; 553 CvPADLIST (cv) = (AV *)POPs;
512 } 554 }
513 555
514 PUTBACK; 556 PUTBACK;
515 } 557 }
558
559 slf_frame = c->slf_frame;
560 CORO_THROW = c->except;
516} 561}
517 562
518static void 563static void
519save_perl (pTHX_ Coro__State c) 564save_perl (pTHX_ Coro__State c)
520{ 565{
566 c->except = CORO_THROW;
567 c->slf_frame = slf_frame;
568
521 { 569 {
522 dSP; 570 dSP;
523 I32 cxix = cxstack_ix; 571 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 572 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 573 PERL_SI *top_si = PL_curstackinfo;
… …
580 c->mainstack = PL_mainstack; 628 c->mainstack = PL_mainstack;
581 629
582 { 630 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 631 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 632
585 slot->defav = GvAV (PL_defgv); 633 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 634 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 635 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 636 slot->irsgv = GvSV (irsgv);
637 slot->hinthv = GvHV (PL_hintgv);
589 638
590 #define VAR(name,type) slot->name = PL_ ## name; 639 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 640 # include "state.h"
592 #undef VAR 641 #undef VAR
593 } 642 }
594} 643}
595 644
596/* 645/*
597 * allocate various perl stacks. This is an exact copy 646 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 647 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 648 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 649 * not usually need a lot of stackspace.
601 */ 650 */
602#if CORO_PREFER_PERL_FUNCTIONS 651#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 652# define coro_init_stacks(thx) init_stacks ()
604#else 653#else
605static void 654static void
606coro_init_stacks (pTHX) 655coro_init_stacks (pTHX)
607{ 656{
608 PL_curstackinfo = new_stackinfo(32, 8); 657 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 720#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 721 Safefree (PL_retstack);
673#endif 722#endif
674} 723}
675 724
725#define CORO_RSS \
726 rss += sizeof (SYM (curstackinfo)); \
727 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
728 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
729 rss += SYM (tmps_max) * sizeof (SV *); \
730 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
731 rss += SYM (scopestack_max) * sizeof (I32); \
732 rss += SYM (savestack_max) * sizeof (ANY);
733
676static size_t 734static size_t
677coro_rss (pTHX_ struct coro *coro) 735coro_rss (pTHX_ struct coro *coro)
678{ 736{
679 size_t rss = sizeof (*coro); 737 size_t rss = sizeof (*coro);
680 738
681 if (coro->mainstack) 739 if (coro->mainstack)
682 { 740 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 741 if (coro->flags & CF_RUNNING)
687 { 742 {
688 slot = &tmp_slot; 743 #define SYM(sym) PL_ ## sym
689 744 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 745 #undef SYM
693 } 746 }
694 else 747 else
695 slot = coro->slot;
696
697 if (slot)
698 { 748 {
699 rss += sizeof (slot->curstackinfo); 749 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 750 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 751 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 752 }
711 } 753 }
712 754
713 return rss; 755 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 756}
734 757
735/** coroutine stack handling ************************************************/ 758/** coroutine stack handling ************************************************/
736 759
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 760static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
823 846
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 847 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 848}
826 849
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 872coro_setup (pTHX_ struct coro *coro)
829{ 873{
830 /* 874 /*
831 * emulate part of the perl startup here. 875 * emulate part of the perl startup here.
832 */ 876 */
… …
834 878
835 PL_runops = RUNOPS_DEFAULT; 879 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 880 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 881 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 882 PL_comppad = 0;
883 PL_comppad_name = 0;
884 PL_comppad_name_fill = 0;
885 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 886 PL_curpm = 0;
840 PL_curpad = 0; 887 PL_curpad = 0;
841 PL_localizing = 0; 888 PL_localizing = 0;
842 PL_dirty = 0; 889 PL_dirty = 0;
843 PL_restartop = 0; 890 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 891#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 892 PL_parser = 0;
846#endif 893#endif
894 PL_hints = 0;
847 895
848 /* recreate the die/warn hooks */ 896 /* recreate the die/warn hooks */
849 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 );
850 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);
851 899
852 GvSV (PL_defgv) = newSV (0); 900 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 901 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 902 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 905 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 906 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 907
859 { 908 {
860 dSP; 909 dSP;
861 UNOP myop; 910 UNOP myop;
862 911
863 Zero (&myop, 1, UNOP); 912 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 913 myop.op_next = Nullop;
914 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 915 myop.op_flags = OPf_WANT_VOID;
866 916
867 PUSHMARK (SP); 917 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 918 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 919 PUTBACK;
870 PL_op = (OP *)&myop; 920 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 921 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 922 }
874 923
875 /* 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
876 * 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.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 926 */
879 SSL_HEAD; 927 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880} 928 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881 929
930 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
931 coro_setup_op.op_next = PL_op;
932 coro_setup_op.op_type = OP_ENTERSUB;
933 coro_setup_op.op_ppaddr = pp_slf;
934 /* no flags etc. required, as an init function won't be called */
935
936 PL_op = (OP *)&coro_setup_op;
937
938 /* copy throw, in case it was set before coro_setup */
939 CORO_THROW = coro->except;
940}
941
882static void 942static void
883coro_destruct (pTHX_ struct coro *coro) 943coro_destruct_perl (pTHX_ struct coro *coro)
884{ 944{
885 if (!IN_DESTRUCT) 945 if (!IN_DESTRUCT)
886 { 946 {
887 /* restore all saved variables and stuff */ 947 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 948 LEAVE_SCOPE (0);
… …
903 SvREFCNT_dec (GvAV (PL_defgv)); 963 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 964 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 965 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 966 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 967 SvREFCNT_dec (GvSV (irsgv));
968 SvREFCNT_dec (GvHV (PL_hintgv));
908 969
909 SvREFCNT_dec (PL_diehook); 970 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 971 SvREFCNT_dec (PL_warnhook);
911 972
912 SvREFCNT_dec (coro->saved_deffh); 973 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 974 SvREFCNT_dec (coro->rouse_cb);
975 SvREFCNT_dec (coro->invoke_cb);
976 SvREFCNT_dec (coro->invoke_av);
914 977
915 coro_destruct_stacks (aTHX); 978 coro_destruct_stacks (aTHX);
916} 979}
917 980
918INLINE void 981INLINE void
… …
928static int 991static int
929runops_trace (pTHX) 992runops_trace (pTHX)
930{ 993{
931 COP *oldcop = 0; 994 COP *oldcop = 0;
932 int oldcxix = -2; 995 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 996
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 997 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 998 {
938 PERL_ASYNC_CHECK (); 999 PERL_ASYNC_CHECK ();
939 1000
940 if (cctx->flags & CC_TRACE_ALL) 1001 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1002 {
942 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)
943 { 1004 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1005 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1006 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1007 AV *av = newAV (); /* return values */
947 SV **cb; 1008 SV **cb;
… …
984 1045
985 if (PL_curcop != &PL_compiling) 1046 if (PL_curcop != &PL_compiling)
986 { 1047 {
987 SV **cb; 1048 SV **cb;
988 1049
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1050 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1051 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1052 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1053
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1054 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1055 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1056 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1057 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1058 SV *fullname = sv_2mortal (newSV (0));
999 1059
1000 if (isGV (gv)) 1060 if (isGV (gv))
… …
1005 SAVETMPS; 1065 SAVETMPS;
1006 EXTEND (SP, 3); 1066 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1067 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1068 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1069 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1071 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1074 SPAGAIN;
1015 FREETMPS; 1075 FREETMPS;
… …
1018 } 1078 }
1019 1079
1020 oldcxix = cxstack_ix; 1080 oldcxix = cxstack_ix;
1021 } 1081 }
1022 1082
1023 if (cctx->flags & CC_TRACE_LINE) 1083 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1084 {
1025 dSP; 1085 dSP;
1026 1086
1027 PL_runops = RUNOPS_DEFAULT; 1087 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1088 ENTER;
… …
1047 1107
1048 TAINT_NOT; 1108 TAINT_NOT;
1049 return 0; 1109 return 0;
1050} 1110}
1051 1111
1112static struct CoroSLF cctx_ssl_frame;
1113
1052static void 1114static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1115slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1116{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1117 ta->prev = 0;
1057} 1118}
1058 1119
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1120static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1121slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1122{
1062/* 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 */
1063static void NOINLINE 1129static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1130cctx_prepare (pTHX)
1065{ 1131{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1132 PL_top_env = &PL_start_env;
1070 1133
1071 if (cctx->flags & CC_TRACE) 1134 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1135 PL_runops = runops_trace;
1073 1136
1074 Zero (&myop, 1, UNOP); 1137 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1138 * that can lead to creation of a new cctx */
1076 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));
1077 1141
1078 PUSHMARK (SP); 1142 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1143 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1144
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1145 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1146 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1147}
1087 1148
1088/* 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 */
1089INLINE void 1150INLINE void
1090transfer_tail (pTHX) 1151transfer_tail (pTHX)
1091{ 1152{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1153 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1154}
1108 1155
1109/* 1156/*
1110 * this is a _very_ stripped down perl interpreter ;) 1157 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1158 */
… …
1118# endif 1165# endif
1119#endif 1166#endif
1120 { 1167 {
1121 dTHX; 1168 dTHX;
1122 1169
1123 /* we are the alternative tail to pp_set_stacklevel */ 1170 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1171 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1172 /* PL_nop = PL_nop->op_next */
1129 1173
1130 /* inject a fake subroutine call to cctx_init */ 1174 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1175 cctx_prepare (aTHX);
1132 1176
1133 /* cctx_run is the alternative tail of transfer() */ 1177 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1178 transfer_tail (aTHX);
1135 1179
1136 /* 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 */
1137 PL_restartop = PL_op; 1181 PL_restartop = PL_op;
1138 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 */
1139 1187
1140 /* 1188 /*
1141 * 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
1142 * 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)
1143 * 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
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1192 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * 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.
1146 */ 1196 */
1147 PL_top_env = main_top_env; 1197 PL_top_env = main_top_env;
1148 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 */
1149 } 1199 }
1150} 1200}
… …
1227cctx_destroy (coro_cctx *cctx) 1277cctx_destroy (coro_cctx *cctx)
1228{ 1278{
1229 if (!cctx) 1279 if (!cctx)
1230 return; 1280 return;
1231 1281
1282 assert (cctx != cctx_current);//D temporary
1283
1232 --cctx_count; 1284 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1285 coro_destroy (&cctx->cctx);
1234 1286
1235 /* coro_transfer creates new, empty cctx's */ 1287 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1288 if (cctx->sptr)
… …
1294/** coroutine switching *****************************************************/ 1346/** coroutine switching *****************************************************/
1295 1347
1296static void 1348static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1349transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1350{
1351 /* TODO: throwing up here is considered harmful */
1352
1299 if (expect_true (prev != next)) 1353 if (expect_true (prev != next))
1300 { 1354 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1355 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 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,");
1303 1357
1304 if (expect_false (next->flags & CF_RUNNING)) 1358 if (expect_false (next->flags & CF_RUNNING))
1305 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,");
1306 1360
1307 if (expect_false (next->flags & CF_DESTROYED)) 1361 if (expect_false (next->flags & CF_DESTROYED))
1308 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,");
1309 1363
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1364#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1365 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 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,");
1313#endif 1367#endif
1314 } 1368 }
1315} 1369}
1316 1370
1317/* always use the TRANSFER macro */ 1371/* always use the TRANSFER macro */
1318static void NOINLINE 1372static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1373transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1374{
1321 dSTACKLEVEL; 1375 dSTACKLEVEL;
1322 1376
1323 /* sometimes transfer is only called to set idle_sp */ 1377 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1378 if (expect_false (!prev))
1325 { 1379 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1380 cctx_current->idle_sp = STACKLEVEL;
1327 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 */
1328 } 1382 }
1329 else if (expect_true (prev != next)) 1383 else if (expect_true (prev != next))
1330 { 1384 {
1331 coro_cctx *prev__cctx; 1385 coro_cctx *cctx_prev;
1332 1386
1333 if (expect_false (prev->flags & CF_NEW)) 1387 if (expect_false (prev->flags & CF_NEW))
1334 { 1388 {
1335 /* create a new empty/source context */ 1389 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1390 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1391 prev->flags |= CF_RUNNING;
1339 } 1392 }
1340 1393
1341 prev->flags &= ~CF_RUNNING; 1394 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1395 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1396
1346 /* first get rid of the old state */ 1397 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1398 save_perl (aTHX_ prev);
1348 1399
1349 if (expect_false (next->flags & CF_NEW)) 1400 if (expect_false (next->flags & CF_NEW))
… …
1354 coro_setup (aTHX_ next); 1405 coro_setup (aTHX_ next);
1355 } 1406 }
1356 else 1407 else
1357 load_perl (aTHX_ next); 1408 load_perl (aTHX_ next);
1358 1409
1359 prev__cctx = prev->cctx; 1410 assert (!prev->cctx);//D temporary
1360 1411
1361 /* possibly untie and reuse the cctx */ 1412 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1413 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1414 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1415 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1416 && !force_cctx
1366 )) 1417 ))
1367 { 1418 {
1368 /* 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 */
1369 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));
1370 1421
1371 prev->cctx = 0;
1372
1373 /* 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. */
1374 /* 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 */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1424 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1425 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1426 next->cctx = cctx_get (aTHX);
1378 1427
1379 cctx_put (prev__cctx); 1428 cctx_put (cctx_current);
1380 } 1429 }
1430 else
1431 prev->cctx = cctx_current;
1381 1432
1382 ++next->usecount; 1433 ++next->usecount;
1383 1434
1384 if (expect_true (!next->cctx)) 1435 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1436 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1437
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1438 next->cctx = 0;
1388 transfer_next = next;
1389 1439
1390 if (expect_false (prev__cctx != next->cctx)) 1440 if (expect_false (cctx_prev != cctx_current))
1391 { 1441 {
1392 prev__cctx->top_env = PL_top_env; 1442 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1443 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1444 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1445 }
1396 1446
1397 transfer_tail (aTHX); 1447 transfer_tail (aTHX);
1398 } 1448 }
1399} 1449}
… …
1406static int 1456static int
1407coro_state_destroy (pTHX_ struct coro *coro) 1457coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1458{
1409 if (coro->flags & CF_DESTROYED) 1459 if (coro->flags & CF_DESTROYED)
1410 return 0; 1460 return 0;
1461
1462 if (coro->on_destroy)
1463 coro->on_destroy (aTHX_ coro);
1411 1464
1412 coro->flags |= CF_DESTROYED; 1465 coro->flags |= CF_DESTROYED;
1413 1466
1414 if (coro->flags & CF_READY) 1467 if (coro->flags & CF_READY)
1415 { 1468 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1469 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1470 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1471 --coro_nready;
1420 UNLOCK;
1421 } 1472 }
1422 else 1473 else
1423 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 */
1424 1475
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1476 if (coro->mainstack
1477 && coro->mainstack != main_mainstack
1478 && !PL_dirty)
1426 { 1479 {
1427 struct coro temp; 1480 struct coro temp;
1428 1481
1429 if (coro->flags & CF_RUNNING) 1482 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1483
1432 save_perl (aTHX_ &temp); 1484 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro); 1485 load_perl (aTHX_ coro);
1434 1486
1435 coro_destruct (aTHX_ coro); 1487 coro_destruct_perl (aTHX_ coro);
1436 1488
1437 load_perl (aTHX_ &temp); 1489 load_perl (aTHX_ &temp);
1438 1490
1439 coro->slot = 0; 1491 coro->slot = 0;
1440 } 1492 }
1441 1493
1442 cctx_destroy (coro->cctx); 1494 cctx_destroy (coro->cctx);
1495 SvREFCNT_dec (coro->startcv);
1443 SvREFCNT_dec (coro->args); 1496 SvREFCNT_dec (coro->args);
1497 SvREFCNT_dec (CORO_THROW);
1444 1498
1445 if (coro->next) coro->next->prev = coro->prev; 1499 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1500 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1501 if (coro == coro_first) coro_first = coro->next;
1448 1502
… …
1486# define MGf_DUP 0 1540# define MGf_DUP 0
1487#endif 1541#endif
1488}; 1542};
1489 1543
1490static void 1544static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1545prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1546{
1493 ta->prev = SvSTATE (prev_sv); 1547 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1548 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1549 TRANSFER_CHECK (*ta);
1496} 1550}
1497 1551
1498static void 1552static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1553api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1554{
1501 dTHX;
1502 struct transfer_args ta; 1555 struct coro_transfer_args ta;
1503 1556
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1557 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1558 TRANSFER (ta, 1);
1506} 1559}
1507 1560
1561/*****************************************************************************/
1562/* gensub: simple closure generation utility */
1563
1564#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1565
1566/* create a closure from XS, returns a code reference */
1567/* the arg can be accessed via GENSUB_ARG from the callback */
1568/* the callback must use dXSARGS/XSRETURN */
1569static SV *
1570gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1571{
1572 CV *cv = (CV *)newSV (0);
1573
1574 sv_upgrade ((SV *)cv, SVt_PVCV);
1575
1576 CvANON_on (cv);
1577 CvISXSUB_on (cv);
1578 CvXSUB (cv) = xsub;
1579 GENSUB_ARG = arg;
1580
1581 return newRV_noinc ((SV *)cv);
1582}
1583
1508/** Coro ********************************************************************/ 1584/** Coro ********************************************************************/
1509 1585
1510static void 1586INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1587coro_enq (pTHX_ struct coro *coro)
1512{ 1588{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1589 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1514} 1590}
1515 1591
1516static SV * 1592INLINE SV *
1517coro_deq (pTHX) 1593coro_deq (pTHX)
1518{ 1594{
1519 int prio; 1595 int prio;
1520 1596
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1597 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 1600
1525 return 0; 1601 return 0;
1526} 1602}
1527 1603
1528static int 1604static int
1529api_ready (SV *coro_sv) 1605api_ready (pTHX_ SV *coro_sv)
1530{ 1606{
1531 dTHX;
1532 struct coro *coro; 1607 struct coro *coro;
1533 SV *sv_hook; 1608 SV *sv_hook;
1534 void (*xs_hook)(void); 1609 void (*xs_hook)(void);
1535 1610
1536 if (SvROK (coro_sv))
1537 coro_sv = SvRV (coro_sv);
1538
1539 coro = SvSTATE (coro_sv); 1611 coro = SvSTATE (coro_sv);
1540 1612
1541 if (coro->flags & CF_READY) 1613 if (coro->flags & CF_READY)
1542 return 0; 1614 return 0;
1543 1615
1544 coro->flags |= CF_READY; 1616 coro->flags |= CF_READY;
1545 1617
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1618 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1619 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1620
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1621 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1622 ++coro_nready;
1553 1623
1554 UNLOCK;
1555
1556 if (sv_hook) 1624 if (sv_hook)
1557 { 1625 {
1558 dSP; 1626 dSP;
1559 1627
1560 ENTER; 1628 ENTER;
1561 SAVETMPS; 1629 SAVETMPS;
1562 1630
1563 PUSHMARK (SP); 1631 PUSHMARK (SP);
1564 PUTBACK; 1632 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1633 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1634
1568 FREETMPS; 1635 FREETMPS;
1569 LEAVE; 1636 LEAVE;
1570 } 1637 }
1571 1638
… …
1574 1641
1575 return 1; 1642 return 1;
1576} 1643}
1577 1644
1578static int 1645static int
1579api_is_ready (SV *coro_sv) 1646api_is_ready (pTHX_ SV *coro_sv)
1580{ 1647{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1648 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1649}
1585 1650
1651/* expects to own a reference to next->hv */
1586INLINE void 1652INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1653prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1588{ 1654{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;)
1592 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX);
1595
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv))
1598 {
1599 dSP;
1600 UNLOCK;
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1609
1610 FREETMPS;
1611 LEAVE;
1612 continue;
1613 }
1614
1615 ta->next = SvSTATE (next_sv);
1616
1617 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */
1623 continue;
1624 }
1625
1626 --coro_nready;
1627 UNLOCK;
1628 break;
1629 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1655 SV *prev_sv = SvRV (coro_current);
1656
1633 ta->prev = SvSTATE (prev_sv); 1657 ta->prev = SvSTATE_hv (prev_sv);
1658 ta->next = next;
1659
1634 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1662 SvRV_set (coro_current, (SV *)next->hv);
1638 1663
1639 LOCK;
1640 free_coro_mortal (aTHX); 1664 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1665 coro_mortal = prev_sv;
1642 UNLOCK; 1666}
1667
1668static void
1669prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1670{
1671 for (;;)
1672 {
1673 SV *next_sv = coro_deq (aTHX);
1674
1675 if (expect_true (next_sv))
1676 {
1677 struct coro *next = SvSTATE_hv (next_sv);
1678
1679 /* cannot transfer to destroyed coros, skip and look for next */
1680 if (expect_false (next->flags & CF_DESTROYED))
1681 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1682 else
1683 {
1684 next->flags &= ~CF_READY;
1685 --coro_nready;
1686
1687 prepare_schedule_to (aTHX_ ta, next);
1688 break;
1689 }
1690 }
1691 else
1692 {
1693 /* nothing to schedule: call the idle handler */
1694 if (SvROK (sv_idle)
1695 && SvOBJECT (SvRV (sv_idle)))
1696 {
1697 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1698 api_ready (aTHX_ SvRV (sv_idle));
1699 --coro_nready;
1700 }
1701 else
1702 {
1703 dSP;
1704
1705 ENTER;
1706 SAVETMPS;
1707
1708 PUSHMARK (SP);
1709 PUTBACK;
1710 call_sv (sv_idle, G_VOID | G_DISCARD);
1711
1712 FREETMPS;
1713 LEAVE;
1714 }
1715 }
1716 }
1643} 1717}
1644 1718
1645INLINE void 1719INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1720prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1721{
1648 api_ready (coro_current); 1722 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1723 prepare_schedule (aTHX_ ta);
1650} 1724}
1651 1725
1726INLINE void
1727prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1728{
1729 SV *prev = SvRV (coro_current);
1730
1731 if (coro_nready)
1732 {
1733 prepare_schedule (aTHX_ ta);
1734 api_ready (aTHX_ prev);
1735 }
1736 else
1737 prepare_nop (aTHX_ ta);
1738}
1739
1740static void
1741api_schedule (pTHX)
1742{
1743 struct coro_transfer_args ta;
1744
1745 prepare_schedule (aTHX_ &ta);
1746 TRANSFER (ta, 1);
1747}
1748
1749static void
1750api_schedule_to (pTHX_ SV *coro_sv)
1751{
1752 struct coro_transfer_args ta;
1753 struct coro *next = SvSTATE (coro_sv);
1754
1755 SvREFCNT_inc_NN (coro_sv);
1756 prepare_schedule_to (aTHX_ &ta, next);
1757}
1758
1652static int 1759static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1760api_cede (pTHX)
1654{ 1761{
1655 if (coro_nready) 1762 struct coro_transfer_args ta;
1656 { 1763
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1764 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1765
1766 if (expect_true (ta.prev != ta.next))
1767 {
1768 TRANSFER (ta, 1);
1660 return 1; 1769 return 1;
1661 } 1770 }
1662 else 1771 else
1663 return 0; 1772 return 0;
1664} 1773}
1665 1774
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1775static int
1677api_cede (void) 1776api_cede_notself (pTHX)
1678{ 1777{
1679 dTHX; 1778 if (coro_nready)
1779 {
1680 struct transfer_args ta; 1780 struct coro_transfer_args ta;
1681 1781
1682 prepare_cede (aTHX_ &ta); 1782 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1783 TRANSFER (ta, 1);
1687 return 1; 1784 return 1;
1688 } 1785 }
1689 else 1786 else
1690 return 0; 1787 return 0;
1691} 1788}
1692 1789
1693static int 1790static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1791api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1792{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 1793 struct coro *coro = SvSTATE (coro_sv);
1794
1795 if (coro->flags & CF_RUNNING)
1796 croak ("cannot enable tracing on a running coroutine, caught");
1713 1797
1714 if (flags & CC_TRACE) 1798 if (flags & CC_TRACE)
1715 { 1799 {
1716 if (!coro->cctx) 1800 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1801 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1802 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1803 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 1804
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1805 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1806 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1807 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1808 {
… …
1729 else 1813 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1814 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1815 }
1732} 1816}
1733 1817
1734#if 0 1818static void
1819coro_call_on_destroy (pTHX_ struct coro *coro)
1820{
1821 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1822 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1823
1824 if (on_destroyp)
1825 {
1826 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1827
1828 while (AvFILLp (on_destroy) >= 0)
1829 {
1830 dSP; /* don't disturb outer sp */
1831 SV *cb = av_pop (on_destroy);
1832
1833 PUSHMARK (SP);
1834
1835 if (statusp)
1836 {
1837 int i;
1838 AV *status = (AV *)SvRV (*statusp);
1839 EXTEND (SP, AvFILLp (status) + 1);
1840
1841 for (i = 0; i <= AvFILLp (status); ++i)
1842 PUSHs (AvARRAY (status)[i]);
1843 }
1844
1845 PUTBACK;
1846 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1847 }
1848 }
1849}
1850
1851static void
1852slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 int i;
1855 HV *hv = (HV *)SvRV (coro_current);
1856 AV *av = newAV ();
1857
1858 av_extend (av, items - 1);
1859 for (i = 0; i < items; ++i)
1860 av_push (av, SvREFCNT_inc_NN (arg [i]));
1861
1862 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1863
1864 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1865 api_ready (aTHX_ sv_manager);
1866
1867 frame->prepare = prepare_schedule;
1868 frame->check = slf_check_repeat;
1869}
1870
1871/*****************************************************************************/
1872/* async pool handler */
1873
1735static int 1874static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1875slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1737{ 1876{
1738 AV *padlist; 1877 HV *hv = (HV *)SvRV (coro_current);
1739 AV *av = (AV *)mg->mg_obj; 1878 struct coro *coro = (struct coro *)frame->data;
1740 1879
1741 abort (); 1880 if (!coro->invoke_cb)
1881 return 1; /* loop till we have invoke */
1882 else
1883 {
1884 hv_store (hv, "desc", sizeof ("desc") - 1,
1885 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1886
1887 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1888
1889 {
1890 dSP;
1891 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1892 PUTBACK;
1893 }
1894
1895 SvREFCNT_dec (GvAV (PL_defgv));
1896 GvAV (PL_defgv) = coro->invoke_av;
1897 coro->invoke_av = 0;
1898
1899 return 0;
1900 }
1901}
1902
1903static void
1904slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1905{
1906 HV *hv = (HV *)SvRV (coro_current);
1907 struct coro *coro = SvSTATE_hv ((SV *)hv);
1908
1909 if (expect_true (coro->saved_deffh))
1910 {
1911 /* subsequent iteration */
1912 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1913 coro->saved_deffh = 0;
1914
1915 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1916 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1917 {
1918 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1919 coro->invoke_av = newAV ();
1920
1921 frame->prepare = prepare_nop;
1922 }
1923 else
1924 {
1925 av_clear (GvAV (PL_defgv));
1926 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1927
1928 coro->prio = 0;
1929
1930 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1931 api_trace (aTHX_ coro_current, 0);
1932
1933 frame->prepare = prepare_schedule;
1934 av_push (av_async_pool, SvREFCNT_inc (hv));
1935 }
1936 }
1937 else
1938 {
1939 /* first iteration, simply fall through */
1940 frame->prepare = prepare_nop;
1941 }
1942
1943 frame->check = slf_check_pool_handler;
1944 frame->data = (void *)coro;
1945}
1946
1947/*****************************************************************************/
1948/* rouse callback */
1949
1950#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1951
1952static void
1953coro_rouse_callback (pTHX_ CV *cv)
1954{
1955 dXSARGS;
1956 SV *data = (SV *)GENSUB_ARG;
1957
1958 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1959 {
1960 /* first call, set args */
1961 AV *av = newAV ();
1962 SV *coro = SvRV (data);
1963
1964 SvRV_set (data, (SV *)av);
1965 api_ready (aTHX_ coro);
1966 SvREFCNT_dec (coro);
1967
1968 /* better take a full copy of the arguments */
1969 while (items--)
1970 av_store (av, items, newSVsv (ST (items)));
1971 }
1972
1973 XSRETURN_EMPTY;
1974}
1975
1976static int
1977slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1978{
1979 SV *data = (SV *)frame->data;
1980
1981 if (CORO_THROW)
1982 return 0;
1983
1984 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1985 return 1;
1986
1987 /* now push all results on the stack */
1988 {
1989 dSP;
1990 AV *av = (AV *)SvRV (data);
1991 int i;
1992
1993 EXTEND (SP, AvFILLp (av) + 1);
1994 for (i = 0; i <= AvFILLp (av); ++i)
1995 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1996
1997 /* we have stolen the elements, so ste length to zero and free */
1998 AvFILLp (av) = -1;
1999 av_undef (av);
2000
2001 PUTBACK;
2002 }
1742 2003
1743 return 0; 2004 return 0;
1744} 2005}
1745 2006
1746static MGVTBL coro_gensub_vtbl = { 2007static void
1747 0, 0, 0, 0, 2008slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 2009{
1749}; 2010 SV *cb;
1750#endif 2011
2012 if (items)
2013 cb = arg [0];
2014 else
2015 {
2016 struct coro *coro = SvSTATE_current;
2017
2018 if (!coro->rouse_cb)
2019 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2020
2021 cb = sv_2mortal (coro->rouse_cb);
2022 coro->rouse_cb = 0;
2023 }
2024
2025 if (!SvROK (cb)
2026 || SvTYPE (SvRV (cb)) != SVt_PVCV
2027 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2028 croak ("Coro::rouse_wait called with illegal callback argument,");
2029
2030 {
2031 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2032 SV *data = (SV *)GENSUB_ARG;
2033
2034 frame->data = (void *)data;
2035 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2036 frame->check = slf_check_rouse_wait;
2037 }
2038}
2039
2040static SV *
2041coro_new_rouse_cb (pTHX)
2042{
2043 HV *hv = (HV *)SvRV (coro_current);
2044 struct coro *coro = SvSTATE_hv (hv);
2045 SV *data = newRV_inc ((SV *)hv);
2046 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2047
2048 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2049 SvREFCNT_dec (data); /* magicext increases the refcount */
2050
2051 SvREFCNT_dec (coro->rouse_cb);
2052 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2053
2054 return cb;
2055}
2056
2057/*****************************************************************************/
2058/* schedule-like-function opcode (SLF) */
2059
2060static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2061static const CV *slf_cv;
2062static SV **slf_argv;
2063static int slf_argc, slf_arga; /* count, allocated */
2064static I32 slf_ax; /* top of stack, for restore */
2065
2066/* this restores the stack in the case we patched the entersub, to */
2067/* recreate the stack frame as perl will on following calls */
2068/* since entersub cleared the stack */
2069static OP *
2070pp_restore (pTHX)
2071{
2072 int i;
2073 SV **SP = PL_stack_base + slf_ax;
2074
2075 PUSHMARK (SP);
2076
2077 EXTEND (SP, slf_argc + 1);
2078
2079 for (i = 0; i < slf_argc; ++i)
2080 PUSHs (sv_2mortal (slf_argv [i]));
2081
2082 PUSHs ((SV *)CvGV (slf_cv));
2083
2084 RETURNOP (slf_restore.op_first);
2085}
2086
2087static void
2088slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2089{
2090 SV **arg = (SV **)slf_frame.data;
2091
2092 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2093}
2094
2095static void
2096slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097{
2098 if (items != 2)
2099 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2100
2101 frame->prepare = slf_prepare_transfer;
2102 frame->check = slf_check_nop;
2103 frame->data = (void *)arg; /* let's hope it will stay valid */
2104}
2105
2106static void
2107slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_schedule;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2115{
2116 struct coro *next = (struct coro *)slf_frame.data;
2117
2118 SvREFCNT_inc_NN (next->hv);
2119 prepare_schedule_to (aTHX_ ta, next);
2120}
2121
2122static void
2123slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2124{
2125 if (!items)
2126 croak ("Coro::schedule_to expects a coroutine argument, caught");
2127
2128 frame->data = (void *)SvSTATE (arg [0]);
2129 frame->prepare = slf_prepare_schedule_to;
2130 frame->check = slf_check_nop;
2131}
2132
2133static void
2134slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2135{
2136 api_ready (aTHX_ SvRV (coro_current));
2137
2138 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2139}
2140
2141static void
2142slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2143{
2144 frame->prepare = prepare_cede;
2145 frame->check = slf_check_nop;
2146}
2147
2148static void
2149slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2150{
2151 frame->prepare = prepare_cede_notself;
2152 frame->check = slf_check_nop;
2153}
2154
2155/*
2156 * these not obviously related functions are all rolled into one
2157 * function to increase chances that they all will call transfer with the same
2158 * stack offset
2159 * SLF stands for "schedule-like-function".
2160 */
2161static OP *
2162pp_slf (pTHX)
2163{
2164 I32 checkmark; /* mark SP to see how many elements check has pushed */
2165
2166 /* set up the slf frame, unless it has already been set-up */
2167 /* the latter happens when a new coro has been started */
2168 /* or when a new cctx was attached to an existing coroutine */
2169 if (expect_true (!slf_frame.prepare))
2170 {
2171 /* first iteration */
2172 dSP;
2173 SV **arg = PL_stack_base + TOPMARK + 1;
2174 int items = SP - arg; /* args without function object */
2175 SV *gv = *sp;
2176
2177 /* do a quick consistency check on the "function" object, and if it isn't */
2178 /* for us, divert to the real entersub */
2179 if (SvTYPE (gv) != SVt_PVGV
2180 || !GvCV (gv)
2181 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2182 return PL_ppaddr[OP_ENTERSUB](aTHX);
2183
2184 if (!(PL_op->op_flags & OPf_STACKED))
2185 {
2186 /* ampersand-form of call, use @_ instead of stack */
2187 AV *av = GvAV (PL_defgv);
2188 arg = AvARRAY (av);
2189 items = AvFILLp (av) + 1;
2190 }
2191
2192 /* now call the init function, which needs to set up slf_frame */
2193 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2194 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2195
2196 /* pop args */
2197 SP = PL_stack_base + POPMARK;
2198
2199 PUTBACK;
2200 }
2201
2202 /* now that we have a slf_frame, interpret it! */
2203 /* we use a callback system not to make the code needlessly */
2204 /* complicated, but so we can run multiple perl coros from one cctx */
2205
2206 do
2207 {
2208 struct coro_transfer_args ta;
2209
2210 slf_frame.prepare (aTHX_ &ta);
2211 TRANSFER (ta, 0);
2212
2213 checkmark = PL_stack_sp - PL_stack_base;
2214 }
2215 while (slf_frame.check (aTHX_ &slf_frame));
2216
2217 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2218
2219 /* exception handling */
2220 if (expect_false (CORO_THROW))
2221 {
2222 SV *exception = sv_2mortal (CORO_THROW);
2223
2224 CORO_THROW = 0;
2225 sv_setsv (ERRSV, exception);
2226 croak (0);
2227 }
2228
2229 /* return value handling - mostly like entersub */
2230 /* make sure we put something on the stack in scalar context */
2231 if (GIMME_V == G_SCALAR)
2232 {
2233 dSP;
2234 SV **bot = PL_stack_base + checkmark;
2235
2236 if (sp == bot) /* too few, push undef */
2237 bot [1] = &PL_sv_undef;
2238 else if (sp != bot + 1) /* too many, take last one */
2239 bot [1] = *sp;
2240
2241 SP = bot + 1;
2242
2243 PUTBACK;
2244 }
2245
2246 return NORMAL;
2247}
2248
2249static void
2250api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2251{
2252 int i;
2253 SV **arg = PL_stack_base + ax;
2254 int items = PL_stack_sp - arg + 1;
2255
2256 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2257
2258 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2259 && PL_op->op_ppaddr != pp_slf)
2260 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2261
2262 CvFLAGS (cv) |= CVf_SLF;
2263 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2264 slf_cv = cv;
2265
2266 /* we patch the op, and then re-run the whole call */
2267 /* we have to put the same argument on the stack for this to work */
2268 /* and this will be done by pp_restore */
2269 slf_restore.op_next = (OP *)&slf_restore;
2270 slf_restore.op_type = OP_CUSTOM;
2271 slf_restore.op_ppaddr = pp_restore;
2272 slf_restore.op_first = PL_op;
2273
2274 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2275
2276 if (PL_op->op_flags & OPf_STACKED)
2277 {
2278 if (items > slf_arga)
2279 {
2280 slf_arga = items;
2281 free (slf_argv);
2282 slf_argv = malloc (slf_arga * sizeof (SV *));
2283 }
2284
2285 slf_argc = items;
2286
2287 for (i = 0; i < items; ++i)
2288 slf_argv [i] = SvREFCNT_inc (arg [i]);
2289 }
2290 else
2291 slf_argc = 0;
2292
2293 PL_op->op_ppaddr = pp_slf;
2294 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2295
2296 PL_op = (OP *)&slf_restore;
2297}
1751 2298
1752/*****************************************************************************/ 2299/*****************************************************************************/
1753/* PerlIO::cede */ 2300/* PerlIO::cede */
1754 2301
1755typedef struct 2302typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2330 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2331 double now = nvtime ();
1785 2332
1786 if (now >= self->next) 2333 if (now >= self->next)
1787 { 2334 {
1788 api_cede (); 2335 api_cede (aTHX);
1789 self->next = now + self->every; 2336 self->next = now + self->every;
1790 } 2337 }
1791 2338
1792 return PerlIOBuf_flush (aTHX_ f); 2339 return PerlIOBuf_flush (aTHX_ f);
1793} 2340}
… …
1823 PerlIOBuf_get_cnt, 2370 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2371 PerlIOBuf_set_ptrcnt,
1825}; 2372};
1826 2373
1827/*****************************************************************************/ 2374/*****************************************************************************/
2375/* Coro::Semaphore & Coro::Signal */
1828 2376
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2377static SV *
1839pp_restore (pTHX) 2378coro_waitarray_new (pTHX_ int count)
1840{ 2379{
2380 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2381 AV *av = newAV ();
2382 SV **ary;
2383
2384 /* unfortunately, building manually saves memory */
2385 Newx (ary, 2, SV *);
2386 AvALLOC (av) = ary;
2387#if PERL_VERSION_ATLEAST (5,10,0)
2388 AvARRAY (av) = ary;
2389#else
2390 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2391 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2392 SvPVX ((SV *)av) = (char *)ary;
2393#endif
2394 AvMAX (av) = 1;
2395 AvFILLp (av) = 0;
2396 ary [0] = newSViv (count);
2397
2398 return newRV_noinc ((SV *)av);
2399}
2400
2401/* semaphore */
2402
2403static void
2404coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2405{
2406 SV *count_sv = AvARRAY (av)[0];
2407 IV count = SvIVX (count_sv);
2408
2409 count += adjust;
2410 SvIVX (count_sv) = count;
2411
2412 /* now wake up as many waiters as are expected to lock */
2413 while (count > 0 && AvFILLp (av) > 0)
2414 {
2415 SV *cb;
2416
2417 /* swap first two elements so we can shift a waiter */
2418 AvARRAY (av)[0] = AvARRAY (av)[1];
2419 AvARRAY (av)[1] = count_sv;
2420 cb = av_shift (av);
2421
2422 if (SvOBJECT (cb))
2423 {
2424 api_ready (aTHX_ cb);
2425 --count;
2426 }
2427 else if (SvTYPE (cb) == SVt_PVCV)
2428 {
2429 dSP;
2430 PUSHMARK (SP);
2431 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2432 PUTBACK;
2433 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2434 }
2435
2436 SvREFCNT_dec (cb);
2437 }
2438}
2439
2440static void
2441coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2442{
2443 /* call $sem->adjust (0) to possibly wake up some other waiters */
2444 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2445}
2446
2447static int
2448slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2449{
2450 AV *av = (AV *)frame->data;
2451 SV *count_sv = AvARRAY (av)[0];
2452
2453 /* if we are about to throw, don't actually acquire the lock, just throw */
2454 if (CORO_THROW)
2455 return 0;
2456 else if (SvIVX (count_sv) > 0)
2457 {
2458 SvSTATE_current->on_destroy = 0;
2459
2460 if (acquire)
2461 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2462 else
2463 coro_semaphore_adjust (aTHX_ av, 0);
2464
2465 return 0;
2466 }
2467 else
2468 {
2469 int i;
2470 /* if we were woken up but can't down, we look through the whole */
2471 /* waiters list and only add us if we aren't in there already */
2472 /* this avoids some degenerate memory usage cases */
2473
2474 for (i = 1; i <= AvFILLp (av); ++i)
2475 if (AvARRAY (av)[i] == SvRV (coro_current))
2476 return 1;
2477
2478 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2479 return 1;
2480 }
2481}
2482
2483static int
2484slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2485{
2486 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2487}
2488
2489static int
2490slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2491{
2492 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2493}
2494
2495static void
2496slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2497{
2498 AV *av = (AV *)SvRV (arg [0]);
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 {
2502 frame->data = (void *)av;
2503 frame->prepare = prepare_nop;
2504 }
2505 else
2506 {
2507 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2508
2509 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2510 frame->prepare = prepare_schedule;
2511
2512 /* to avoid race conditions when a woken-up coro gets terminated */
2513 /* we arrange for a temporary on_destroy that calls adjust (0) */
2514 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2515 }
2516}
2517
2518static void
2519slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2520{
2521 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2522 frame->check = slf_check_semaphore_down;
2523}
2524
2525static void
2526slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2527{
2528 if (items >= 2)
2529 {
2530 /* callback form */
2531 AV *av = (AV *)SvRV (arg [0]);
2532 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2533
2534 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2535
2536 if (SvIVX (AvARRAY (av)[0]) > 0)
2537 coro_semaphore_adjust (aTHX_ av, 0);
2538
2539 frame->prepare = prepare_nop;
2540 frame->check = slf_check_nop;
2541 }
2542 else
2543 {
2544 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2545 frame->check = slf_check_semaphore_wait;
2546 }
2547}
2548
2549/* signal */
2550
2551static void
2552coro_signal_wake (pTHX_ AV *av, int count)
2553{
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555
2556 /* now signal count waiters */
2557 while (count > 0 && AvFILLp (av) > 0)
2558 {
2559 SV *cb;
2560
2561 /* swap first two elements so we can shift a waiter */
2562 cb = AvARRAY (av)[0];
2563 AvARRAY (av)[0] = AvARRAY (av)[1];
2564 AvARRAY (av)[1] = cb;
2565
2566 cb = av_shift (av);
2567
2568 api_ready (aTHX_ cb);
2569 sv_setiv (cb, 0); /* signal waiter */
2570 SvREFCNT_dec (cb);
2571
2572 --count;
2573 }
2574}
2575
2576static int
2577slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2578{
2579 /* if we are about to throw, also stop waiting */
2580 return SvROK ((SV *)frame->data) && !CORO_THROW;
2581}
2582
2583static void
2584slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2585{
2586 AV *av = (AV *)SvRV (arg [0]);
2587
2588 if (SvIVX (AvARRAY (av)[0]))
2589 {
2590 SvIVX (AvARRAY (av)[0]) = 0;
2591 frame->prepare = prepare_nop;
2592 frame->check = slf_check_nop;
2593 }
2594 else
2595 {
2596 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2597
2598 av_push (av, waiter);
2599
2600 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2601 frame->prepare = prepare_schedule;
2602 frame->check = slf_check_signal_wait;
2603 }
2604}
2605
2606/*****************************************************************************/
2607/* Coro::AIO */
2608
2609#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2610
2611/* helper storage struct */
2612struct io_state
2613{
2614 int errorno;
2615 I32 laststype; /* U16 in 5.10.0 */
2616 int laststatval;
2617 Stat_t statcache;
2618};
2619
2620static void
2621coro_aio_callback (pTHX_ CV *cv)
2622{
2623 dXSARGS;
2624 AV *state = (AV *)GENSUB_ARG;
2625 SV *coro = av_pop (state);
2626 SV *data_sv = newSV (sizeof (struct io_state));
2627
2628 av_extend (state, items - 1);
2629
2630 sv_upgrade (data_sv, SVt_PV);
2631 SvCUR_set (data_sv, sizeof (struct io_state));
2632 SvPOK_only (data_sv);
2633
2634 {
2635 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2636
2637 data->errorno = errno;
2638 data->laststype = PL_laststype;
2639 data->laststatval = PL_laststatval;
2640 data->statcache = PL_statcache;
2641 }
2642
2643 /* now build the result vector out of all the parameters and the data_sv */
2644 {
2645 int i;
2646
2647 for (i = 0; i < items; ++i)
2648 av_push (state, SvREFCNT_inc_NN (ST (i)));
2649 }
2650
2651 av_push (state, data_sv);
2652
2653 api_ready (aTHX_ coro);
2654 SvREFCNT_dec (coro);
2655 SvREFCNT_dec ((AV *)state);
2656}
2657
2658static int
2659slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2660{
2661 AV *state = (AV *)frame->data;
2662
2663 /* if we are about to throw, return early */
2664 /* this does not cancel the aio request, but at least */
2665 /* it quickly returns */
2666 if (CORO_THROW)
2667 return 0;
2668
2669 /* one element that is an RV? repeat! */
2670 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2671 return 1;
2672
2673 /* restore status */
2674 {
2675 SV *data_sv = av_pop (state);
2676 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2677
2678 errno = data->errorno;
2679 PL_laststype = data->laststype;
2680 PL_laststatval = data->laststatval;
2681 PL_statcache = data->statcache;
2682
2683 SvREFCNT_dec (data_sv);
2684 }
2685
2686 /* push result values */
2687 {
1841 dSP; 2688 dSP;
2689 int i;
1842 2690
2691 EXTEND (SP, AvFILLp (state) + 1);
2692 for (i = 0; i <= AvFILLp (state); ++i)
2693 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2694
2695 PUTBACK;
2696 }
2697
2698 return 0;
2699}
2700
2701static void
2702slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2703{
2704 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2705 SV *coro_hv = SvRV (coro_current);
2706 struct coro *coro = SvSTATE_hv (coro_hv);
2707
2708 /* put our coroutine id on the state arg */
2709 av_push (state, SvREFCNT_inc_NN (coro_hv));
2710
2711 /* first see whether we have a non-zero priority and set it as AIO prio */
2712 if (coro->prio)
2713 {
2714 dSP;
2715
2716 static SV *prio_cv;
2717 static SV *prio_sv;
2718
2719 if (expect_false (!prio_cv))
2720 {
2721 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2722 prio_sv = newSViv (0);
2723 }
2724
2725 PUSHMARK (SP);
2726 sv_setiv (prio_sv, coro->prio);
2727 XPUSHs (prio_sv);
2728
2729 PUTBACK;
2730 call_sv (prio_cv, G_VOID | G_DISCARD);
2731 }
2732
2733 /* now call the original request */
2734 {
2735 dSP;
2736 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2737 int i;
2738
1843 PUSHMARK (SP); 2739 PUSHMARK (SP);
1844 2740
1845 EXTEND (SP, 3); 2741 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2742 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2743
1850 RETURNOP (ssl_restore.op_first); 2744 for (i = 0; i < items; ++i)
1851} 2745 PUSHs (arg [i]);
1852 2746
1853/* declare prototype */ 2747 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2748 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2749
1856static OP * 2750 /* now call the AIO function - we assume our request is uncancelable */
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK; 2751 PUTBACK;
1881 switch (PL_op->op_private & 7) 2752 call_sv ((SV *)req, G_VOID | G_DISCARD);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 2753 }
1908 2754
1909 TRANSFER (ta, 0); 2755 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2756 frame->data = (void *)state;
1911 2757 frame->prepare = prepare_schedule;
1912skip: 2758 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 2759}
2760
2761static void
2762coro_aio_req_xs (pTHX_ CV *cv)
2763{
2764 dXSARGS;
2765
2766 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2767
2768 XSRETURN_EMPTY;
2769}
2770
2771/*****************************************************************************/
2772
2773#if CORO_CLONE
2774# include "clone.c"
2775#endif
1918 2776
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2777MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2778
1921PROTOTYPES: DISABLE 2779PROTOTYPES: DISABLE
1922 2780
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2781BOOT:
1955{ 2782{
1956#ifdef USE_ITHREADS 2783#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2784# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2785 coro_thx = PERL_GET_CONTEXT;
1960# endif 2786# endif
1961#endif 2787#endif
1962 BOOT_PAGESIZE; 2788 BOOT_PAGESIZE;
1963 2789
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 2790 cctx_current = cctx_new_empty ();
1965 2791
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2792 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2793 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2794
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2795 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 2811 main_top_env = PL_top_env;
1986 2812
1987 while (main_top_env->je_prev) 2813 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2814 main_top_env = main_top_env->je_prev;
1989 2815
2816 {
2817 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2818
2819 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2820 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2821
2822 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2823 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2824 }
2825
1990 coroapi.ver = CORO_API_VERSION; 2826 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2827 coroapi.rev = CORO_API_REVISION;
2828
1992 coroapi.transfer = api_transfer; 2829 coroapi.transfer = api_transfer;
2830
2831 coroapi.sv_state = SvSTATE_;
2832 coroapi.execute_slf = api_execute_slf;
2833 coroapi.prepare_nop = prepare_nop;
2834 coroapi.prepare_schedule = prepare_schedule;
2835 coroapi.prepare_cede = prepare_cede;
2836 coroapi.prepare_cede_notself = prepare_cede_notself;
1993 2837
1994 { 2838 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2839 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2840
1997 if (!svp) croak ("Time::HiRes is required"); 2841 if (!svp) croak ("Time::HiRes is required");
… …
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2847 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2004} 2848}
2005 2849
2006SV * 2850SV *
2007new (char *klass, ...) 2851new (char *klass, ...)
2852 ALIAS:
2853 Coro::new = 1
2008 CODE: 2854 CODE:
2009{ 2855{
2010 struct coro *coro; 2856 struct coro *coro;
2011 MAGIC *mg; 2857 MAGIC *mg;
2012 HV *hv; 2858 HV *hv;
2859 CV *cb;
2013 int i; 2860 int i;
2861
2862 if (items > 1)
2863 {
2864 cb = coro_sv_2cv (aTHX_ ST (1));
2865
2866 if (!ix)
2867 {
2868 if (CvISXSUB (cb))
2869 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2870
2871 if (!CvROOT (cb))
2872 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2873 }
2874 }
2014 2875
2015 Newz (0, coro, 1, struct coro); 2876 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV (); 2877 coro->args = newAV ();
2017 coro->flags = CF_NEW; 2878 coro->flags = CF_NEW;
2018 2879
… …
2023 coro->hv = hv = newHV (); 2884 coro->hv = hv = newHV ();
2024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2885 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2025 mg->mg_flags |= MGf_DUP; 2886 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2887 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027 2888
2889 if (items > 1)
2890 {
2028 av_extend (coro->args, items - 1); 2891 av_extend (coro->args, items - 1 + ix - 1);
2892
2893 if (ix)
2894 {
2895 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2896 cb = cv_coro_run;
2897 }
2898
2899 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2900
2029 for (i = 1; i < items; i++) 2901 for (i = 2; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2902 av_push (coro->args, newSVsv (ST (i)));
2903 }
2031} 2904}
2032 OUTPUT: 2905 OUTPUT:
2033 RETVAL 2906 RETVAL
2907
2908void
2909transfer (...)
2910 PROTOTYPE: $$
2911 CODE:
2912 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 2913
2035bool 2914bool
2036_destroy (SV *coro_sv) 2915_destroy (SV *coro_sv)
2037 CODE: 2916 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2917 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2043_exit (int code) 2922_exit (int code)
2044 PROTOTYPE: $ 2923 PROTOTYPE: $
2045 CODE: 2924 CODE:
2046 _exit (code); 2925 _exit (code);
2047 2926
2927SV *
2928clone (Coro::State coro)
2929 CODE:
2930{
2931#if CORO_CLONE
2932 struct coro *ncoro = coro_clone (aTHX_ coro);
2933 MAGIC *mg;
2934 /* TODO: too much duplication */
2935 ncoro->hv = newHV ();
2936 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2937 mg->mg_flags |= MGf_DUP;
2938 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2939#else
2940 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2941#endif
2942}
2943 OUTPUT:
2944 RETVAL
2945
2048int 2946int
2049cctx_stacksize (int new_stacksize = 0) 2947cctx_stacksize (int new_stacksize = 0)
2948 PROTOTYPE: ;$
2050 CODE: 2949 CODE:
2051 RETVAL = cctx_stacksize; 2950 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 2951 if (new_stacksize)
2053 { 2952 {
2054 cctx_stacksize = new_stacksize; 2953 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 2956 OUTPUT:
2058 RETVAL 2957 RETVAL
2059 2958
2060int 2959int
2061cctx_max_idle (int max_idle = 0) 2960cctx_max_idle (int max_idle = 0)
2961 PROTOTYPE: ;$
2062 CODE: 2962 CODE:
2063 RETVAL = cctx_max_idle; 2963 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 2964 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 2965 cctx_max_idle = max_idle;
2066 OUTPUT: 2966 OUTPUT:
2067 RETVAL 2967 RETVAL
2068 2968
2069int 2969int
2070cctx_count () 2970cctx_count ()
2971 PROTOTYPE:
2071 CODE: 2972 CODE:
2072 RETVAL = cctx_count; 2973 RETVAL = cctx_count;
2073 OUTPUT: 2974 OUTPUT:
2074 RETVAL 2975 RETVAL
2075 2976
2076int 2977int
2077cctx_idle () 2978cctx_idle ()
2979 PROTOTYPE:
2078 CODE: 2980 CODE:
2079 RETVAL = cctx_idle; 2981 RETVAL = cctx_idle;
2080 OUTPUT: 2982 OUTPUT:
2081 RETVAL 2983 RETVAL
2082 2984
2083void 2985void
2084list () 2986list ()
2987 PROTOTYPE:
2085 PPCODE: 2988 PPCODE:
2086{ 2989{
2087 struct coro *coro; 2990 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 2991 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 2992 if (coro->hv)
… …
2151 3054
2152void 3055void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3056throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3057 PROTOTYPE: $;$
2155 CODE: 3058 CODE:
3059{
3060 struct coro *current = SvSTATE_current;
3061 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 3062 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3063 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3064}
2158 3065
2159void 3066void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3068 PROTOTYPE: $;$
3069 C_ARGS: aTHX_ coro, flags
2161 3070
2162SV * 3071SV *
2163has_cctx (Coro::State coro) 3072has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3073 PROTOTYPE: $
2165 CODE: 3074 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3075 /* maybe manage the running flag differently */
3076 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3077 OUTPUT:
2168 RETVAL 3078 RETVAL
2169 3079
2170int 3080int
2171is_traced (Coro::State coro) 3081is_traced (Coro::State coro)
… …
2189 OUTPUT: 3099 OUTPUT:
2190 RETVAL 3100 RETVAL
2191 3101
2192void 3102void
2193force_cctx () 3103force_cctx ()
3104 PROTOTYPE:
2194 CODE: 3105 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3106 cctx_current->idle_sp = 0;
2197 3107
2198void 3108void
2199swap_defsv (Coro::State self) 3109swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3110 PROTOTYPE: $
2201 ALIAS: 3111 ALIAS:
2202 swap_defav = 1 3112 swap_defav = 1
2203 CODE: 3113 CODE:
2204 if (!self->slot) 3114 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3115 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3116 else
2207 { 3117 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3118 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3119 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3120
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3121 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3122 }
2213 3123
3124
2214MODULE = Coro::State PACKAGE = Coro 3125MODULE = Coro::State PACKAGE = Coro
2215 3126
2216BOOT: 3127BOOT:
2217{ 3128{
2218 int i; 3129 int i;
2219 3130
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3131 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3132 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3133 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3134 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3135 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 SvREADONLY_on (coro_current); 3136 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3137 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3138 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3139 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3140
3141 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3142 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3143 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3144 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2226 3145
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3146 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3147
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3148 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3149 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2238 3157
2239 { 3158 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3159 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3160
2242 coroapi.schedule = api_schedule; 3161 coroapi.schedule = api_schedule;
3162 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3163 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3164 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3165 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3166 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3167 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3168 coroapi.current = coro_current;
2249 3169
2250 GCoroAPI = &coroapi; 3170 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3171 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3172 SvREADONLY_on (sv);
2253 } 3173 }
2254} 3174}
3175
3176void
3177terminate (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3180
3181void
3182schedule (...)
3183 CODE:
3184 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3185
3186void
3187schedule_to (...)
3188 CODE:
3189 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3190
3191void
3192cede_to (...)
3193 CODE:
3194 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3195
3196void
3197cede (...)
3198 CODE:
3199 CORO_EXECUTE_SLF_XS (slf_init_cede);
3200
3201void
3202cede_notself (...)
3203 CODE:
3204 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3205
3206void
3207_cancel (Coro::State self)
3208 CODE:
3209 coro_state_destroy (aTHX_ self);
3210 coro_call_on_destroy (aTHX_ self);
2255 3211
2256void 3212void
2257_set_current (SV *current) 3213_set_current (SV *current)
2258 PROTOTYPE: $ 3214 PROTOTYPE: $
2259 CODE: 3215 CODE:
… …
2262 3218
2263void 3219void
2264_set_readyhook (SV *hook) 3220_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3221 PROTOTYPE: $
2266 CODE: 3222 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3223 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3224 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 3225
2272int 3226int
2273prio (Coro::State coro, int newprio = 0) 3227prio (Coro::State coro, int newprio = 0)
3228 PROTOTYPE: $;$
2274 ALIAS: 3229 ALIAS:
2275 nice = 1 3230 nice = 1
2276 CODE: 3231 CODE:
2277{ 3232{
2278 RETVAL = coro->prio; 3233 RETVAL = coro->prio;
… …
2293 3248
2294SV * 3249SV *
2295ready (SV *self) 3250ready (SV *self)
2296 PROTOTYPE: $ 3251 PROTOTYPE: $
2297 CODE: 3252 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3253 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3254 OUTPUT:
2300 RETVAL 3255 RETVAL
2301 3256
2302int 3257int
2303nready (...) 3258nready (...)
… …
2305 CODE: 3260 CODE:
2306 RETVAL = coro_nready; 3261 RETVAL = coro_nready;
2307 OUTPUT: 3262 OUTPUT:
2308 RETVAL 3263 RETVAL
2309 3264
2310# for async_pool speedup
2311void 3265void
2312_pool_1 (SV *cb) 3266_pool_handler (...)
2313 CODE: 3267 CODE:
2314{ 3268 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current);
2317 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av;
2320 int i, len;
2321 3269
2322 if (!invoke) 3270void
3271async_pool (SV *cv, ...)
3272 PROTOTYPE: &@
3273 PPCODE:
3274{
3275 HV *hv = (HV *)av_pop (av_async_pool);
3276 AV *av = newAV ();
3277 SV *cb = ST (0);
3278 int i;
3279
3280 av_extend (av, items - 2);
3281 for (i = 1; i < items; ++i)
3282 av_push (av, SvREFCNT_inc_NN (ST (i)));
3283
3284 if ((SV *)hv == &PL_sv_undef)
2323 { 3285 {
2324 SV *old = PL_diehook; 3286 PUSHMARK (SP);
2325 PL_diehook = 0; 3287 EXTEND (SP, 2);
2326 SvREFCNT_dec (old); 3288 PUSHs (sv_Coro);
2327 croak ("\3async_pool terminate\2\n"); 3289 PUSHs ((SV *)cv_pool_handler);
3290 PUTBACK;
3291 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3292 SPAGAIN;
3293
3294 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2328 } 3295 }
2329 3296
2330 SvREFCNT_dec (coro->saved_deffh);
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 hv_store (hv, "desc", sizeof ("desc") - 1,
2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2335
2336 invoke_av = (AV *)SvRV (invoke);
2337 len = av_len (invoke_av);
2338
2339 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2340
2341 if (len > 0)
2342 { 3297 {
2343 av_fill (defav, len - 1); 3298 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3299
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3300 assert (!coro->invoke_cb);
3301 assert (!coro->invoke_av);
3302 coro->invoke_cb = SvREFCNT_inc (cb);
3303 coro->invoke_av = av;
2346 } 3304 }
2347 3305
3306 api_ready (aTHX_ (SV *)hv);
3307
3308 if (GIMME_V != G_VOID)
3309 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3310 else
2348 SvREFCNT_dec (invoke); 3311 SvREFCNT_dec (hv);
2349} 3312}
2350 3313
2351void 3314SV *
2352_pool_2 (SV *cb) 3315rouse_cb ()
3316 PROTOTYPE:
2353 CODE: 3317 CODE:
2354{ 3318 RETVAL = coro_new_rouse_cb (aTHX);
2355 struct coro *coro = SvSTATE (coro_current);
2356
2357 sv_setsv (cb, &PL_sv_undef);
2358
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0;
2361
2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n");
2369 }
2370
2371 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374
2375 coro->prio = 0;
2376
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0);
2379
2380 av_push (av_async_pool, newSVsv (coro_current));
2381}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 3319 OUTPUT:
2427 RETVAL 3320 RETVAL
2428 3321
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 3322void
2435_get_state (SV *self) 3323rouse_wait (...)
3324 PROTOTYPE: ;$
2436 PPCODE: 3325 PPCODE:
2437{ 3326 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445 3327
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450 3328
2451 av_extend (av, AvFILLp (defav) + 1 + 1); 3329MODULE = Coro::State PACKAGE = PerlIO::cede
2452 3330
2453 for (i = 0; i <= AvFILLp (defav); ++i) 3331BOOT:
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3332 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2455 3333
2456 av_push (av, data_sv);
2457 3334
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3335MODULE = Coro::State PACKAGE = Coro::Semaphore
2459 3336
2460 api_ready (self); 3337SV *
2461} 3338new (SV *klass, SV *count = 0)
3339 CODE:
3340 RETVAL = sv_bless (
3341 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3342 GvSTASH (CvGV (cv))
3343 );
3344 OUTPUT:
3345 RETVAL
3346
3347# helper for Coro::Channel
3348SV *
3349_alloc (int count)
3350 CODE:
3351 RETVAL = coro_waitarray_new (aTHX_ count);
3352 OUTPUT:
3353 RETVAL
3354
3355SV *
3356count (SV *self)
3357 CODE:
3358 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3359 OUTPUT:
3360 RETVAL
2462 3361
2463void 3362void
2464_set_state (SV *state) 3363up (SV *self, int adjust = 1)
2465 PROTOTYPE: $ 3364 ALIAS:
3365 adjust = 1
3366 CODE:
3367 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3368
3369void
3370down (...)
3371 CODE:
3372 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3373
3374void
3375wait (...)
3376 CODE:
3377 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3378
3379void
3380try (SV *self)
3381 PPCODE:
3382{
3383 AV *av = (AV *)SvRV (self);
3384 SV *count_sv = AvARRAY (av)[0];
3385 IV count = SvIVX (count_sv);
3386
3387 if (count > 0)
3388 {
3389 --count;
3390 SvIVX (count_sv) = count;
3391 XSRETURN_YES;
3392 }
3393 else
3394 XSRETURN_NO;
3395}
3396
3397void
3398waiters (SV *self)
3399 PPCODE:
3400{
3401 AV *av = (AV *)SvRV (self);
3402 int wcount = AvFILLp (av) + 1 - 1;
3403
3404 if (GIMME_V == G_SCALAR)
3405 XPUSHs (sv_2mortal (newSViv (wcount)));
3406 else
3407 {
3408 int i;
3409 EXTEND (SP, wcount);
3410 for (i = 1; i <= wcount; ++i)
3411 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3412 }
3413}
3414
3415MODULE = Coro::State PACKAGE = Coro::Signal
3416
3417SV *
3418new (SV *klass)
2466 PPCODE: 3419 CODE:
3420 RETVAL = sv_bless (
3421 coro_waitarray_new (aTHX_ 0),
3422 GvSTASH (CvGV (cv))
3423 );
3424 OUTPUT:
3425 RETVAL
3426
3427void
3428wait (...)
3429 CODE:
3430 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3431
3432void
3433broadcast (SV *self)
3434 CODE:
2467{ 3435{
2468 AV *av = (AV *)SvRV (state); 3436 AV *av = (AV *)SvRV (self);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3437 coro_signal_wake (aTHX_ av, AvFILLp (av));
2470 int i; 3438}
2471 3439
2472 errno = data->errorno; 3440void
2473 PL_laststype = data->laststype; 3441send (SV *self)
2474 PL_laststatval = data->laststatval; 3442 CODE:
2475 PL_statcache = data->statcache; 3443{
3444 AV *av = (AV *)SvRV (self);
2476 3445
2477 EXTEND (SP, AvFILLp (av)); 3446 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3447 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3448 else
3449 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3450}
3451
3452IV
3453awaited (SV *self)
3454 CODE:
3455 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3456 OUTPUT:
3457 RETVAL
2481 3458
2482 3459
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3460MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3461
2485BOOT: 3462BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3463 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3464
2488SV * 3465void
2489_schedule (...) 3466_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3467 CODE:
2492{ 3468{
2493 static int incede; 3469 static int incede;
2494 3470
2495 api_cede_notself (); 3471 api_cede_notself (aTHX);
2496 3472
2497 ++incede; 3473 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3474 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3475 ;
2500 3476
2501 sv_setsv (sv_activity, &PL_sv_undef); 3477 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3478 if (coro_nready >= incede)
2503 { 3479 {
2504 PUSHMARK (SP); 3480 PUSHMARK (SP);
2505 PUTBACK; 3481 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3482 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3483 }
2509 3484
2510 --incede; 3485 --incede;
2511} 3486}
2512 3487
2513 3488
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3489MODULE = Coro::State PACKAGE = Coro::AIO
2515 3490
2516BOOT: 3491void
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3492_register (char *target, char *proto, SV *req)
3493 CODE:
3494{
3495 CV *req_cv = coro_sv_2cv (aTHX_ req);
3496 /* newXSproto doesn't return the CV on 5.8 */
3497 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3498 sv_setpv ((SV *)slf_cv, proto);
3499 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3500}
2518 3501

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