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Comparing Coro/Coro/State.xs (file contents):
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline 143# define INLINE static inline
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 177
188struct transfer_args 178static AV *av_destroy; /* destruction queue */
189{ 179static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
191};
192 181
193static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 184static SV *rv_diehook;
196static SV *rv_warnhook; 185static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
198 187
199/* async_pool helper stuff */ 188/* async_pool helper stuff */
200static SV *sv_pool_rss; 189static SV *sv_pool_rss;
201static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
203 196
204/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
205static SV *sv_activity; 198static SV *sv_activity;
206 199
207static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 210};
218 211
219/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 213typedef struct coro_cctx
214{
221 struct coro_cctx *next; 215 struct coro_cctx *next;
222 216
223 /* the stack */ 217 /* the stack */
224 void *sptr; 218 void *sptr;
225 size_t ssize; 219 size_t ssize;
… …
234#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
235 int valgrind_id; 229 int valgrind_id;
236#endif 230#endif
237 unsigned char flags; 231 unsigned char flags;
238} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
239 237
240enum { 238enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 243};
246 244
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 246typedef struct
247{
249 SV *defsv; 248 SV *defsv;
250 AV *defav; 249 AV *defav;
251 SV *errsv; 250 SV *errsv;
252 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 253#define VAR(name,type) type name;
254# include "state.h" 254# include "state.h"
255#undef VAR 255#undef VAR
256} perl_slots; 256} perl_slots;
257 257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 259
260/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
261struct coro { 261struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 263 coro_cctx *cctx;
264 264
265 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 267 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
268 269
270 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
273 276
274 /* statistics */ 277 /* statistics */
275 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
276 279
277 /* coro process data */ 280 /* coro process data */
278 int prio; 281 int prio;
279 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
280 284
281 /* async_pool */ 285 /* async_pool */
282 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* on_enter/on_leave */
291 AV *on_enter;
292 AV *on_leave;
283 293
284 /* linked list */ 294 /* linked list */
285 struct coro *next, *prev; 295 struct coro *next, *prev;
286}; 296};
287 297
288typedef struct coro *Coro__State; 298typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 299typedef struct coro *Coro__State_or_hashref;
300
301/* the following variables are effectively part of the perl context */
302/* and get copied between struct coro and these variables */
303/* the mainr easonw e don't support windows process emulation */
304static struct CoroSLF slf_frame; /* the current slf frame */
290 305
291/** Coro ********************************************************************/ 306/** Coro ********************************************************************/
292 307
293#define PRIO_MAX 3 308#define PRIO_MAX 3
294#define PRIO_HIGH 1 309#define PRIO_HIGH 1
… …
299 314
300/* for Coro.pm */ 315/* for Coro.pm */
301static SV *coro_current; 316static SV *coro_current;
302static SV *coro_readyhook; 317static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 318static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
319static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 320static struct coro *coro_first;
305#define coro_nready coroapi.nready 321#define coro_nready coroapi.nready
306 322
307/** lowlevel stuff **********************************************************/ 323/** lowlevel stuff **********************************************************/
308 324
… …
334 get_hv (name, create); 350 get_hv (name, create);
335#endif 351#endif
336 return get_hv (name, create); 352 return get_hv (name, create);
337} 353}
338 354
355/* may croak */
356INLINE CV *
357coro_sv_2cv (pTHX_ SV *sv)
358{
359 HV *st;
360 GV *gvp;
361 CV *cv = sv_2cv (sv, &st, &gvp, 0);
362
363 if (!cv)
364 croak ("code reference expected");
365
366 return cv;
367}
368
369/*****************************************************************************/
370/* magic glue */
371
372#define CORO_MAGIC_type_cv 26
373#define CORO_MAGIC_type_state PERL_MAGIC_ext
374
375#define CORO_MAGIC_NN(sv, type) \
376 (expect_true (SvMAGIC (sv)->mg_type == type) \
377 ? SvMAGIC (sv) \
378 : mg_find (sv, type))
379
380#define CORO_MAGIC(sv, type) \
381 (expect_true (SvMAGIC (sv)) \
382 ? CORO_MAGIC_NN (sv, type) \
383 : 0)
384
385#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
386#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
387
388INLINE struct coro *
389SvSTATE_ (pTHX_ SV *coro)
390{
391 HV *stash;
392 MAGIC *mg;
393
394 if (SvROK (coro))
395 coro = SvRV (coro);
396
397 if (expect_false (SvTYPE (coro) != SVt_PVHV))
398 croak ("Coro::State object required");
399
400 stash = SvSTASH (coro);
401 if (expect_false (stash != coro_stash && stash != coro_state_stash))
402 {
403 /* very slow, but rare, check */
404 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
405 croak ("Coro::State object required");
406 }
407
408 mg = CORO_MAGIC_state (coro);
409 return (struct coro *)mg->mg_ptr;
410}
411
412#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
413
414/* faster than SvSTATE, but expects a coroutine hv */
415#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
416#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
417
418/*****************************************************************************/
419/* padlist management and caching */
420
339static AV * 421static AV *
340coro_clone_padlist (pTHX_ CV *cv) 422coro_derive_padlist (pTHX_ CV *cv)
341{ 423{
342 AV *padlist = CvPADLIST (cv); 424 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 425 AV *newpadlist, *newpad;
344 426
345 newpadlist = newAV (); 427 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 432 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 433#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 434 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 435 --AvFILLp (padlist);
354 436
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 437 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 438 av_store (newpadlist, 1, (SV *)newpad);
357 439
358 return newpadlist; 440 return newpadlist;
359} 441}
360 442
361static void 443static void
362free_padlist (pTHX_ AV *padlist) 444free_padlist (pTHX_ AV *padlist)
363{ 445{
364 /* may be during global destruction */ 446 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 447 if (!IN_DESTRUCT)
366 { 448 {
367 I32 i = AvFILLp (padlist); 449 I32 i = AvFILLp (padlist);
368 while (i >= 0) 450
451 while (i > 0) /* special-case index 0 */
369 { 452 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 453 /* we try to be extra-careful here */
371 if (svp) 454 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 455 I32 j = AvFILLp (av);
373 SV *sv; 456
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 457 while (j >= 0)
458 SvREFCNT_dec (AvARRAY (av)[j--]);
459
460 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 461 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 462 }
380 463
464 SvREFCNT_dec (AvARRAY (padlist)[0]);
465
466 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 467 SvREFCNT_dec ((SV*)padlist);
382 } 468 }
383} 469}
384 470
385static int 471static int
… …
394 480
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 481 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 482
397 return 0; 483 return 0;
398} 484}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 485
403static MGVTBL coro_cv_vtbl = { 486static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 487 0, 0, 0, 0,
405 coro_cv_free 488 coro_cv_free
406}; 489};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 490
444/* the next two functions merely cache the padlists */ 491/* the next two functions merely cache the padlists */
445static void 492static void
446get_padlist (pTHX_ CV *cv) 493get_padlist (pTHX_ CV *cv)
447{ 494{
… …
453 else 500 else
454 { 501 {
455#if CORO_PREFER_PERL_FUNCTIONS 502#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 503 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 504 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 505 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 506 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 507 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 508 SvREFCNT_dec (cp);
462#else 509#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 510 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 511#endif
465 } 512 }
466} 513}
467 514
468static void 515static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 522 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 523
477 av = (AV *)mg->mg_obj; 524 av = (AV *)mg->mg_obj;
478 525
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 526 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 527 av_extend (av, AvFILLp (av) + 1);
481 528
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 529 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 530}
484 531
485/** load & save, init *******************************************************/ 532/** load & save, init *******************************************************/
533
534static void
535on_enterleave_call (pTHX_ SV *cb);
486 536
487static void 537static void
488load_perl (pTHX_ Coro__State c) 538load_perl (pTHX_ Coro__State c)
489{ 539{
490 perl_slots *slot = c->slot; 540 perl_slots *slot = c->slot;
491 c->slot = 0; 541 c->slot = 0;
492 542
493 PL_mainstack = c->mainstack; 543 PL_mainstack = c->mainstack;
494 544
495 GvSV (PL_defgv) = slot->defsv; 545 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 546 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 547 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 548 GvSV (irsgv) = slot->irsgv;
549 GvHV (PL_hintgv) = slot->hinthv;
499 550
500 #define VAR(name,type) PL_ ## name = slot->name; 551 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 552 # include "state.h"
502 #undef VAR 553 #undef VAR
503 554
… …
514 CvPADLIST (cv) = (AV *)POPs; 565 CvPADLIST (cv) = (AV *)POPs;
515 } 566 }
516 567
517 PUTBACK; 568 PUTBACK;
518 } 569 }
570
571 slf_frame = c->slf_frame;
572 CORO_THROW = c->except;
573
574 if (expect_false (c->on_enter))
575 {
576 int i;
577
578 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
579 on_enterleave_call (AvARRAY (c->on_enter)[i]);
580 }
519} 581}
520 582
521static void 583static void
522save_perl (pTHX_ Coro__State c) 584save_perl (pTHX_ Coro__State c)
523{ 585{
586 if (expect_false (c->on_leave))
587 {
588 int i;
589
590 for (i = AvFILLp (c->on_leave); i >= 0; --i)
591 on_enterleave_call (AvARRAY (c->on_leave)[i]);
592 }
593
594 c->except = CORO_THROW;
595 c->slf_frame = slf_frame;
596
524 { 597 {
525 dSP; 598 dSP;
526 I32 cxix = cxstack_ix; 599 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 600 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 601 PERL_SI *top_si = PL_curstackinfo;
… …
583 c->mainstack = PL_mainstack; 656 c->mainstack = PL_mainstack;
584 657
585 { 658 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 659 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 660
588 slot->defav = GvAV (PL_defgv); 661 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 662 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 663 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 664 slot->irsgv = GvSV (irsgv);
665 slot->hinthv = GvHV (PL_hintgv);
592 666
593 #define VAR(name,type) slot->name = PL_ ## name; 667 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 668 # include "state.h"
595 #undef VAR 669 #undef VAR
596 } 670 }
597} 671}
598 672
599/* 673/*
600 * allocate various perl stacks. This is an exact copy 674 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 675 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 676 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 677 * not usually need a lot of stackspace.
604 */ 678 */
605#if CORO_PREFER_PERL_FUNCTIONS 679#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 680# define coro_init_stacks(thx) init_stacks ()
607#else 681#else
608static void 682static void
609coro_init_stacks (pTHX) 683coro_init_stacks (pTHX)
610{ 684{
611 PL_curstackinfo = new_stackinfo(32, 8); 685 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 748#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 749 Safefree (PL_retstack);
676#endif 750#endif
677} 751}
678 752
753#define CORO_RSS \
754 rss += sizeof (SYM (curstackinfo)); \
755 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
756 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
757 rss += SYM (tmps_max) * sizeof (SV *); \
758 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
759 rss += SYM (scopestack_max) * sizeof (I32); \
760 rss += SYM (savestack_max) * sizeof (ANY);
761
679static size_t 762static size_t
680coro_rss (pTHX_ struct coro *coro) 763coro_rss (pTHX_ struct coro *coro)
681{ 764{
682 size_t rss = sizeof (*coro); 765 size_t rss = sizeof (*coro);
683 766
684 if (coro->mainstack) 767 if (coro->mainstack)
685 { 768 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 769 if (coro->flags & CF_RUNNING)
690 { 770 {
691 slot = &tmp_slot; 771 #define SYM(sym) PL_ ## sym
692 772 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 773 #undef SYM
696 } 774 }
697 else 775 else
698 slot = coro->slot;
699
700 if (slot)
701 { 776 {
702 rss += sizeof (slot->curstackinfo); 777 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 778 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 779 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 780 }
714 } 781 }
715 782
716 return rss; 783 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 784}
745 785
746/** coroutine stack handling ************************************************/ 786/** coroutine stack handling ************************************************/
747 787
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 788static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 797#endif
758 798
759/* 799/*
760 * This overrides the default magic get method of %SIG elements. 800 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 801 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 802 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 803 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 804 */
768static int 805static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 806coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 807{
771 const char *s = MgPV_nolen_const (mg); 808 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 861 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 862
826 if (svp) 863 if (svp)
827 { 864 {
828 SV *old = *svp; 865 SV *old = *svp;
829 *svp = newSVsv (sv); 866 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 867 SvREFCNT_dec (old);
831 return 0; 868 return 0;
832 } 869 }
833 } 870 }
834 871
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 872 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 873}
837 874
838static void 875static void
876prepare_nop (pTHX_ struct coro_transfer_args *ta)
877{
878 /* kind of mega-hacky, but works */
879 ta->next = ta->prev = (struct coro *)ta;
880}
881
882static int
883slf_check_nop (pTHX_ struct CoroSLF *frame)
884{
885 return 0;
886}
887
888static int
889slf_check_repeat (pTHX_ struct CoroSLF *frame)
890{
891 return 1;
892}
893
894static UNOP coro_setup_op;
895
896static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 897coro_setup (pTHX_ struct coro *coro)
840{ 898{
841 /* 899 /*
842 * emulate part of the perl startup here. 900 * emulate part of the perl startup here.
843 */ 901 */
… …
845 903
846 PL_runops = RUNOPS_DEFAULT; 904 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 905 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 906 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 907 PL_comppad = 0;
908 PL_comppad_name = 0;
909 PL_comppad_name_fill = 0;
910 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 911 PL_curpm = 0;
851 PL_curpad = 0; 912 PL_curpad = 0;
852 PL_localizing = 0; 913 PL_localizing = 0;
853 PL_dirty = 0; 914 PL_dirty = 0;
854 PL_restartop = 0; 915 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 916#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 917 PL_parser = 0;
857#endif 918#endif
919 PL_hints = 0;
858 920
859 /* recreate the die/warn hooks */ 921 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 922 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 923 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 924
863 GvSV (PL_defgv) = newSV (0); 925 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 926 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 927 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 928 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
929 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 930 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 931 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 932
870 { 933 {
871 dSP; 934 dSP;
872 UNOP myop; 935 UNOP myop;
873 936
874 Zero (&myop, 1, UNOP); 937 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 938 myop.op_next = Nullop;
939 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 940 myop.op_flags = OPf_WANT_VOID;
877 941
878 PUSHMARK (SP); 942 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 943 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 944 PUTBACK;
881 PL_op = (OP *)&myop; 945 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 946 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 947 }
885 948
886 /* this newly created coroutine might be run on an existing cctx which most 949 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 950 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 951 */
890 SLF_HEAD; 952 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 953 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 954
955 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
956 coro_setup_op.op_next = PL_op;
957 coro_setup_op.op_type = OP_ENTERSUB;
958 coro_setup_op.op_ppaddr = pp_slf;
959 /* no flags etc. required, as an init function won't be called */
960
961 PL_op = (OP *)&coro_setup_op;
962
963 /* copy throw, in case it was set before coro_setup */
964 CORO_THROW = coro->except;
965}
966
893static void 967static void
894coro_destruct (pTHX_ struct coro *coro) 968coro_unwind_stacks (pTHX)
895{ 969{
896 if (!IN_DESTRUCT) 970 if (!IN_DESTRUCT)
897 { 971 {
898 /* restore all saved variables and stuff */ 972 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 973 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 981 POPSTACK_TO (PL_mainstack);
908 982
909 /* unwind main stack */ 983 /* unwind main stack */
910 dounwind (-1); 984 dounwind (-1);
911 } 985 }
986}
987
988static void
989coro_destruct_perl (pTHX_ struct coro *coro)
990{
991 coro_unwind_stacks (aTHX);
912 992
913 SvREFCNT_dec (GvSV (PL_defgv)); 993 SvREFCNT_dec (GvSV (PL_defgv));
914 SvREFCNT_dec (GvAV (PL_defgv)); 994 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv)); 995 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv); 996 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs); 997 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv)); 998 SvREFCNT_dec (GvSV (irsgv));
999 SvREFCNT_dec (GvHV (PL_hintgv));
919 1000
920 SvREFCNT_dec (PL_diehook); 1001 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 1002 SvREFCNT_dec (PL_warnhook);
922 1003
923 SvREFCNT_dec (coro->saved_deffh); 1004 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1005 SvREFCNT_dec (coro->rouse_cb);
1006 SvREFCNT_dec (coro->invoke_cb);
1007 SvREFCNT_dec (coro->invoke_av);
925 1008
926 coro_destruct_stacks (aTHX); 1009 coro_destruct_stacks (aTHX);
927} 1010}
928 1011
929INLINE void 1012INLINE void
… …
939static int 1022static int
940runops_trace (pTHX) 1023runops_trace (pTHX)
941{ 1024{
942 COP *oldcop = 0; 1025 COP *oldcop = 0;
943 int oldcxix = -2; 1026 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1027
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1028 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1029 {
949 PERL_ASYNC_CHECK (); 1030 PERL_ASYNC_CHECK ();
950 1031
951 if (cctx->flags & CC_TRACE_ALL) 1032 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1033 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1034 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1035 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1036 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1037 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1038 AV *av = newAV (); /* return values */
958 SV **cb; 1039 SV **cb;
… …
995 1076
996 if (PL_curcop != &PL_compiling) 1077 if (PL_curcop != &PL_compiling)
997 { 1078 {
998 SV **cb; 1079 SV **cb;
999 1080
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1081 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1082 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1083 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1084
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1085 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1086 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1087 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1088 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1089 SV *fullname = sv_2mortal (newSV (0));
1010 1090
1011 if (isGV (gv)) 1091 if (isGV (gv))
… …
1016 SAVETMPS; 1096 SAVETMPS;
1017 EXTEND (SP, 3); 1097 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1098 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1099 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1100 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1101 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1102 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1103 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1104 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1105 SPAGAIN;
1026 FREETMPS; 1106 FREETMPS;
… …
1029 } 1109 }
1030 1110
1031 oldcxix = cxstack_ix; 1111 oldcxix = cxstack_ix;
1032 } 1112 }
1033 1113
1034 if (cctx->flags & CC_TRACE_LINE) 1114 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1115 {
1036 dSP; 1116 dSP;
1037 1117
1038 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1119 ENTER;
… …
1058 1138
1059 TAINT_NOT; 1139 TAINT_NOT;
1060 return 0; 1140 return 0;
1061} 1141}
1062 1142
1143static struct CoroSLF cctx_ssl_frame;
1144
1063static void 1145static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1146slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1147{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1148 ta->prev = 0;
1068} 1149}
1069 1150
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1151static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1152slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1153{
1073/* also initialises PL_top_env */ 1154 *frame = cctx_ssl_frame;
1155
1156 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1157}
1158
1159/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1160static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1161cctx_prepare (pTHX)
1076{ 1162{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1163 PL_top_env = &PL_start_env;
1081 1164
1082 if (cctx->flags & CC_TRACE) 1165 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1166 PL_runops = runops_trace;
1084 1167
1085 Zero (&myop, 1, UNOP); 1168 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1169 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1170 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1171 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1172
1089 PUSHMARK (SP); 1173 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1174 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1175
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1176 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1177 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1178}
1098 1179
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1180/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1181INLINE void
1101transfer_tail (pTHX) 1182transfer_tail (pTHX)
1102{ 1183{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1184 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1185}
1119 1186
1120/* 1187/*
1121 * this is a _very_ stripped down perl interpreter ;) 1188 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1189 */
… …
1129# endif 1196# endif
1130#endif 1197#endif
1131 { 1198 {
1132 dTHX; 1199 dTHX;
1133 1200
1134 /* we are the alternative tail to pp_set_stacklevel */ 1201 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1202 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1203 /* PL_nop = PL_nop->op_next */
1140 1204
1141 /* inject a fake subroutine call to cctx_init */ 1205 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1206 cctx_prepare (aTHX);
1143 1207
1144 /* cctx_run is the alternative tail of transfer() */ 1208 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1209 transfer_tail (aTHX);
1146 1210
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1211 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1212 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1213 perl_run (PL_curinterp);
1214 /*
1215 * Unfortunately, there is no way to get at the return values of the
1216 * coro body here, as perl_run destroys these
1217 */
1150 1218
1151 /* 1219 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1220 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1221 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1222 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1223 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1224 * coroutine as Coro has no such concept.
1225 * This actually isn't valid with the pthread backend, but OSes requiring
1226 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1227 */
1158 PL_top_env = main_top_env; 1228 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1229 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1230 }
1161} 1231}
… …
1238cctx_destroy (coro_cctx *cctx) 1308cctx_destroy (coro_cctx *cctx)
1239{ 1309{
1240 if (!cctx) 1310 if (!cctx)
1241 return; 1311 return;
1242 1312
1313 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1314
1243 --cctx_count; 1315 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1316 coro_destroy (&cctx->cctx);
1245 1317
1246 /* coro_transfer creates new, empty cctx's */ 1318 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1319 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1377/** coroutine switching *****************************************************/
1306 1378
1307static void 1379static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1380transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1381{
1382 /* TODO: throwing up here is considered harmful */
1383
1310 if (expect_true (prev != next)) 1384 if (expect_true (prev != next))
1311 { 1385 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1386 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1387 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1388
1315 if (expect_false (next->flags & CF_RUNNING)) 1389 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1390 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1391
1318 if (expect_false (next->flags & CF_DESTROYED)) 1392 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1393 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1394
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1395#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1396 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1397 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1398#endif
1325 } 1399 }
1326} 1400}
1327 1401
1328/* always use the TRANSFER macro */ 1402/* always use the TRANSFER macro */
1329static void NOINLINE 1403static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1404transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1405{
1332 dSTACKLEVEL; 1406 dSTACKLEVEL;
1333 1407
1334 /* sometimes transfer is only called to set idle_sp */ 1408 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1409 if (expect_false (!prev))
1336 { 1410 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1411 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1412 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1413 }
1340 else if (expect_true (prev != next)) 1414 else if (expect_true (prev != next))
1341 { 1415 {
1342 coro_cctx *prev__cctx; 1416 coro_cctx *cctx_prev;
1343 1417
1344 if (expect_false (prev->flags & CF_NEW)) 1418 if (expect_false (prev->flags & CF_NEW))
1345 { 1419 {
1346 /* create a new empty/source context */ 1420 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1421 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1422 prev->flags |= CF_RUNNING;
1350 } 1423 }
1351 1424
1352 prev->flags &= ~CF_RUNNING; 1425 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1426 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1427
1357 /* first get rid of the old state */ 1428 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1429 save_perl (aTHX_ prev);
1359 1430
1360 if (expect_false (next->flags & CF_NEW)) 1431 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1436 coro_setup (aTHX_ next);
1366 } 1437 }
1367 else 1438 else
1368 load_perl (aTHX_ next); 1439 load_perl (aTHX_ next);
1369 1440
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1441 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1442 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1443 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1444 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1445 && !force_cctx
1377 )) 1446 ))
1378 { 1447 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1448 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1449 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1450
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1451 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1452 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1453 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1454 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1455 next->cctx = cctx_get (aTHX);
1389 1456
1390 cctx_put (prev__cctx); 1457 cctx_put (cctx_current);
1391 } 1458 }
1459 else
1460 prev->cctx = cctx_current;
1392 1461
1393 ++next->usecount; 1462 ++next->usecount;
1394 1463
1395 if (expect_true (!next->cctx)) 1464 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1465 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1466
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1467 next->cctx = 0;
1399 transfer_next = next;
1400 1468
1401 if (expect_false (prev__cctx != next->cctx)) 1469 if (expect_false (cctx_prev != cctx_current))
1402 { 1470 {
1403 prev__cctx->top_env = PL_top_env; 1471 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1472 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1473 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1474 }
1407 1475
1408 transfer_tail (aTHX); 1476 transfer_tail (aTHX);
1409 } 1477 }
1410} 1478}
… …
1417static int 1485static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1486coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1487{
1420 if (coro->flags & CF_DESTROYED) 1488 if (coro->flags & CF_DESTROYED)
1421 return 0; 1489 return 0;
1490
1491 if (coro->on_destroy)
1492 coro->on_destroy (aTHX_ coro);
1422 1493
1423 coro->flags |= CF_DESTROYED; 1494 coro->flags |= CF_DESTROYED;
1424 1495
1425 if (coro->flags & CF_READY) 1496 if (coro->flags & CF_READY)
1426 { 1497 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1498 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1499 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1500 --coro_nready;
1431 UNLOCK;
1432 } 1501 }
1433 else 1502 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1503 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1504
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1505 if (coro->mainstack
1506 && coro->mainstack != main_mainstack
1507 && coro->slot
1508 && !PL_dirty)
1437 { 1509 {
1438 struct coro temp; 1510 struct coro *current = SvSTATE_current;
1439 1511
1440 if (coro->flags & CF_RUNNING) 1512 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1513
1443 save_perl (aTHX_ &temp); 1514 save_perl (aTHX_ current);
1444 load_perl (aTHX_ coro); 1515 load_perl (aTHX_ coro);
1445 1516
1446 coro_destruct (aTHX_ coro); 1517 coro_destruct_perl (aTHX_ coro);
1447 1518
1448 load_perl (aTHX_ &temp); 1519 load_perl (aTHX_ current);
1449 1520
1450 coro->slot = 0; 1521 coro->slot = 0;
1451 } 1522 }
1452 1523
1453 cctx_destroy (coro->cctx); 1524 cctx_destroy (coro->cctx);
1525 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1526 SvREFCNT_dec (coro->args);
1527 SvREFCNT_dec (CORO_THROW);
1455 1528
1456 if (coro->next) coro->next->prev = coro->prev; 1529 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1530 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1531 if (coro == coro_first) coro_first = coro->next;
1459 1532
… …
1497# define MGf_DUP 0 1570# define MGf_DUP 0
1498#endif 1571#endif
1499}; 1572};
1500 1573
1501static void 1574static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1575prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1576{
1504 ta->prev = SvSTATE (prev_sv); 1577 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1578 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1579 TRANSFER_CHECK (*ta);
1507} 1580}
1508 1581
1509static void 1582static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1583api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1584{
1512 struct transfer_args ta; 1585 struct coro_transfer_args ta;
1513 1586
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1587 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1588 TRANSFER (ta, 1);
1516} 1589}
1517 1590
1591/*****************************************************************************/
1592/* gensub: simple closure generation utility */
1593
1594#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1595
1596/* create a closure from XS, returns a code reference */
1597/* the arg can be accessed via GENSUB_ARG from the callback */
1598/* the callback must use dXSARGS/XSRETURN */
1599static SV *
1600gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1601{
1602 CV *cv = (CV *)newSV (0);
1603
1604 sv_upgrade ((SV *)cv, SVt_PVCV);
1605
1606 CvANON_on (cv);
1607 CvISXSUB_on (cv);
1608 CvXSUB (cv) = xsub;
1609 GENSUB_ARG = arg;
1610
1611 return newRV_noinc ((SV *)cv);
1612}
1613
1518/** Coro ********************************************************************/ 1614/** Coro ********************************************************************/
1519 1615
1520static void 1616INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1617coro_enq (pTHX_ struct coro *coro)
1522{ 1618{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1619 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1620}
1525 1621
1526static SV * 1622INLINE SV *
1527coro_deq (pTHX) 1623coro_deq (pTHX)
1528{ 1624{
1529 int prio; 1625 int prio;
1530 1626
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1627 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1540{ 1636{
1541 struct coro *coro; 1637 struct coro *coro;
1542 SV *sv_hook; 1638 SV *sv_hook;
1543 void (*xs_hook)(void); 1639 void (*xs_hook)(void);
1544 1640
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1641 coro = SvSTATE (coro_sv);
1549 1642
1550 if (coro->flags & CF_READY) 1643 if (coro->flags & CF_READY)
1551 return 0; 1644 return 0;
1552 1645
1553 coro->flags |= CF_READY; 1646 coro->flags |= CF_READY;
1554 1647
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1648 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1649 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1650
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1651 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1652 ++coro_nready;
1562 1653
1563 UNLOCK;
1564
1565 if (sv_hook) 1654 if (sv_hook)
1566 { 1655 {
1567 dSP; 1656 dSP;
1568 1657
1569 ENTER; 1658 ENTER;
1570 SAVETMPS; 1659 SAVETMPS;
1571 1660
1572 PUSHMARK (SP); 1661 PUSHMARK (SP);
1573 PUTBACK; 1662 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1663 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1664
1577 FREETMPS; 1665 FREETMPS;
1578 LEAVE; 1666 LEAVE;
1579 } 1667 }
1580 1668
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1676api_is_ready (pTHX_ SV *coro_sv)
1589{ 1677{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1678 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1679}
1592 1680
1681/* expects to own a reference to next->hv */
1593INLINE void 1682INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1683prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1684{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1685 SV *prev_sv = SvRV (coro_current);
1686
1640 ta->prev = SvSTATE (prev_sv); 1687 ta->prev = SvSTATE_hv (prev_sv);
1688 ta->next = next;
1689
1641 TRANSFER_CHECK (*ta); 1690 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1691
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1692 SvRV_set (coro_current, (SV *)next->hv);
1645 1693
1646 LOCK;
1647 free_coro_mortal (aTHX); 1694 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1695 coro_mortal = prev_sv;
1649 UNLOCK; 1696}
1697
1698static void
1699prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1700{
1701 for (;;)
1702 {
1703 SV *next_sv = coro_deq (aTHX);
1704
1705 if (expect_true (next_sv))
1706 {
1707 struct coro *next = SvSTATE_hv (next_sv);
1708
1709 /* cannot transfer to destroyed coros, skip and look for next */
1710 if (expect_false (next->flags & CF_DESTROYED))
1711 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1712 else
1713 {
1714 next->flags &= ~CF_READY;
1715 --coro_nready;
1716
1717 prepare_schedule_to (aTHX_ ta, next);
1718 break;
1719 }
1720 }
1721 else
1722 {
1723 /* nothing to schedule: call the idle handler */
1724 if (SvROK (sv_idle)
1725 && SvOBJECT (SvRV (sv_idle)))
1726 {
1727 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1728 api_ready (aTHX_ SvRV (sv_idle));
1729 --coro_nready;
1730 }
1731 else
1732 {
1733 dSP;
1734
1735 ENTER;
1736 SAVETMPS;
1737
1738 PUSHMARK (SP);
1739 PUTBACK;
1740 call_sv (sv_idle, G_VOID | G_DISCARD);
1741
1742 FREETMPS;
1743 LEAVE;
1744 }
1745 }
1746 }
1650} 1747}
1651 1748
1652INLINE void 1749INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1750prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1751{
1655 api_ready (aTHX_ coro_current); 1752 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1753 prepare_schedule (aTHX_ ta);
1657} 1754}
1658 1755
1659static void 1756INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1757prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1758{
1662 SV *prev = SvRV (coro_current); 1759 SV *prev = SvRV (coro_current);
1663 1760
1664 if (coro_nready) 1761 if (coro_nready)
1665 { 1762 {
1666 prepare_schedule (aTHX_ ta); 1763 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1764 api_ready (aTHX_ prev);
1668 } 1765 }
1669 else 1766 else
1670 ta->prev = ta->next = SvSTATE (prev); 1767 prepare_nop (aTHX_ ta);
1671} 1768}
1672 1769
1673static void 1770static void
1674api_schedule (pTHX) 1771api_schedule (pTHX)
1675{ 1772{
1676 struct transfer_args ta; 1773 struct coro_transfer_args ta;
1677 1774
1678 prepare_schedule (aTHX_ &ta); 1775 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1776 TRANSFER (ta, 1);
1680} 1777}
1681 1778
1779static void
1780api_schedule_to (pTHX_ SV *coro_sv)
1781{
1782 struct coro_transfer_args ta;
1783 struct coro *next = SvSTATE (coro_sv);
1784
1785 SvREFCNT_inc_NN (coro_sv);
1786 prepare_schedule_to (aTHX_ &ta, next);
1787}
1788
1682static int 1789static int
1683api_cede (pTHX) 1790api_cede (pTHX)
1684{ 1791{
1685 struct transfer_args ta; 1792 struct coro_transfer_args ta;
1686 1793
1687 prepare_cede (aTHX_ &ta); 1794 prepare_cede (aTHX_ &ta);
1688 1795
1689 if (expect_true (ta.prev != ta.next)) 1796 if (expect_true (ta.prev != ta.next))
1690 { 1797 {
… …
1698static int 1805static int
1699api_cede_notself (pTHX) 1806api_cede_notself (pTHX)
1700{ 1807{
1701 if (coro_nready) 1808 if (coro_nready)
1702 { 1809 {
1703 struct transfer_args ta; 1810 struct coro_transfer_args ta;
1704 1811
1705 prepare_cede_notself (aTHX_ &ta); 1812 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1813 TRANSFER (ta, 1);
1707 return 1; 1814 return 1;
1708 } 1815 }
… …
1713static void 1820static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1821api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1822{
1716 struct coro *coro = SvSTATE (coro_sv); 1823 struct coro *coro = SvSTATE (coro_sv);
1717 1824
1825 if (coro->flags & CF_RUNNING)
1826 croak ("cannot enable tracing on a running coroutine, caught");
1827
1718 if (flags & CC_TRACE) 1828 if (flags & CC_TRACE)
1719 { 1829 {
1720 if (!coro->cctx) 1830 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1831 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1832 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1833 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1834
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1835 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1836 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1837 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1838 {
… …
1733 else 1843 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1844 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1845 }
1736} 1846}
1737 1847
1738#if 0 1848static void
1849coro_call_on_destroy (pTHX_ struct coro *coro)
1850{
1851 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1852 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1853
1854 if (on_destroyp)
1855 {
1856 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1857
1858 while (AvFILLp (on_destroy) >= 0)
1859 {
1860 dSP; /* don't disturb outer sp */
1861 SV *cb = av_pop (on_destroy);
1862
1863 PUSHMARK (SP);
1864
1865 if (statusp)
1866 {
1867 int i;
1868 AV *status = (AV *)SvRV (*statusp);
1869 EXTEND (SP, AvFILLp (status) + 1);
1870
1871 for (i = 0; i <= AvFILLp (status); ++i)
1872 PUSHs (AvARRAY (status)[i]);
1873 }
1874
1875 PUTBACK;
1876 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1877 }
1878 }
1879}
1880
1881static void
1882slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883{
1884 int i;
1885 HV *hv = (HV *)SvRV (coro_current);
1886 AV *av = newAV ();
1887
1888 av_extend (av, items - 1);
1889 for (i = 0; i < items; ++i)
1890 av_push (av, SvREFCNT_inc_NN (arg [i]));
1891
1892 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1893
1894 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1895 api_ready (aTHX_ sv_manager);
1896
1897 frame->prepare = prepare_schedule;
1898 frame->check = slf_check_repeat;
1899
1900 /* as a minor optimisation, we could unwind all stacks here */
1901 /* but that puts extra pressure on pp_slf, and is not worth much */
1902 /*coro_unwind_stacks (aTHX);*/
1903}
1904
1905/*****************************************************************************/
1906/* async pool handler */
1907
1739static int 1908static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1909slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1910{
1742 AV *padlist; 1911 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1912 struct coro *coro = (struct coro *)frame->data;
1744 1913
1745 abort (); 1914 if (!coro->invoke_cb)
1915 return 1; /* loop till we have invoke */
1916 else
1917 {
1918 hv_store (hv, "desc", sizeof ("desc") - 1,
1919 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1920
1921 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1922
1923 {
1924 dSP;
1925 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1926 PUTBACK;
1927 }
1928
1929 SvREFCNT_dec (GvAV (PL_defgv));
1930 GvAV (PL_defgv) = coro->invoke_av;
1931 coro->invoke_av = 0;
1932
1933 return 0;
1934 }
1935}
1936
1937static void
1938slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1939{
1940 HV *hv = (HV *)SvRV (coro_current);
1941 struct coro *coro = SvSTATE_hv ((SV *)hv);
1942
1943 if (expect_true (coro->saved_deffh))
1944 {
1945 /* subsequent iteration */
1946 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1947 coro->saved_deffh = 0;
1948
1949 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1950 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1951 {
1952 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1953 coro->invoke_av = newAV ();
1954
1955 frame->prepare = prepare_nop;
1956 }
1957 else
1958 {
1959 av_clear (GvAV (PL_defgv));
1960 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1961
1962 coro->prio = 0;
1963
1964 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1965 api_trace (aTHX_ coro_current, 0);
1966
1967 frame->prepare = prepare_schedule;
1968 av_push (av_async_pool, SvREFCNT_inc (hv));
1969 }
1970 }
1971 else
1972 {
1973 /* first iteration, simply fall through */
1974 frame->prepare = prepare_nop;
1975 }
1976
1977 frame->check = slf_check_pool_handler;
1978 frame->data = (void *)coro;
1979}
1980
1981/*****************************************************************************/
1982/* rouse callback */
1983
1984#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1985
1986static void
1987coro_rouse_callback (pTHX_ CV *cv)
1988{
1989 dXSARGS;
1990 SV *data = (SV *)GENSUB_ARG;
1991
1992 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1993 {
1994 /* first call, set args */
1995 AV *av = newAV ();
1996 SV *coro = SvRV (data);
1997
1998 SvRV_set (data, (SV *)av);
1999 api_ready (aTHX_ coro);
2000 SvREFCNT_dec (coro);
2001
2002 /* better take a full copy of the arguments */
2003 while (items--)
2004 av_store (av, items, newSVsv (ST (items)));
2005 }
2006
2007 XSRETURN_EMPTY;
2008}
2009
2010static int
2011slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2012{
2013 SV *data = (SV *)frame->data;
2014
2015 if (CORO_THROW)
2016 return 0;
2017
2018 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2019 return 1;
2020
2021 /* now push all results on the stack */
2022 {
2023 dSP;
2024 AV *av = (AV *)SvRV (data);
2025 int i;
2026
2027 EXTEND (SP, AvFILLp (av) + 1);
2028 for (i = 0; i <= AvFILLp (av); ++i)
2029 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2030
2031 /* we have stolen the elements, so ste length to zero and free */
2032 AvFILLp (av) = -1;
2033 av_undef (av);
2034
2035 PUTBACK;
2036 }
1746 2037
1747 return 0; 2038 return 0;
1748} 2039}
1749 2040
1750static MGVTBL coro_gensub_vtbl = { 2041static void
1751 0, 0, 0, 0, 2042slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 2043{
1753}; 2044 SV *cb;
1754#endif 2045
2046 if (items)
2047 cb = arg [0];
2048 else
2049 {
2050 struct coro *coro = SvSTATE_current;
2051
2052 if (!coro->rouse_cb)
2053 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2054
2055 cb = sv_2mortal (coro->rouse_cb);
2056 coro->rouse_cb = 0;
2057 }
2058
2059 if (!SvROK (cb)
2060 || SvTYPE (SvRV (cb)) != SVt_PVCV
2061 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2062 croak ("Coro::rouse_wait called with illegal callback argument,");
2063
2064 {
2065 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2066 SV *data = (SV *)GENSUB_ARG;
2067
2068 frame->data = (void *)data;
2069 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2070 frame->check = slf_check_rouse_wait;
2071 }
2072}
2073
2074static SV *
2075coro_new_rouse_cb (pTHX)
2076{
2077 HV *hv = (HV *)SvRV (coro_current);
2078 struct coro *coro = SvSTATE_hv (hv);
2079 SV *data = newRV_inc ((SV *)hv);
2080 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2081
2082 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2083 SvREFCNT_dec (data); /* magicext increases the refcount */
2084
2085 SvREFCNT_dec (coro->rouse_cb);
2086 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2087
2088 return cb;
2089}
2090
2091/*****************************************************************************/
2092/* schedule-like-function opcode (SLF) */
2093
2094static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2095static const CV *slf_cv;
2096static SV **slf_argv;
2097static int slf_argc, slf_arga; /* count, allocated */
2098static I32 slf_ax; /* top of stack, for restore */
2099
2100/* this restores the stack in the case we patched the entersub, to */
2101/* recreate the stack frame as perl will on following calls */
2102/* since entersub cleared the stack */
2103static OP *
2104pp_restore (pTHX)
2105{
2106 int i;
2107 SV **SP = PL_stack_base + slf_ax;
2108
2109 PUSHMARK (SP);
2110
2111 EXTEND (SP, slf_argc + 1);
2112
2113 for (i = 0; i < slf_argc; ++i)
2114 PUSHs (sv_2mortal (slf_argv [i]));
2115
2116 PUSHs ((SV *)CvGV (slf_cv));
2117
2118 RETURNOP (slf_restore.op_first);
2119}
2120
2121static void
2122slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2123{
2124 SV **arg = (SV **)slf_frame.data;
2125
2126 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2127}
2128
2129static void
2130slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 if (items != 2)
2133 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2134
2135 frame->prepare = slf_prepare_transfer;
2136 frame->check = slf_check_nop;
2137 frame->data = (void *)arg; /* let's hope it will stay valid */
2138}
2139
2140static void
2141slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2142{
2143 frame->prepare = prepare_schedule;
2144 frame->check = slf_check_nop;
2145}
2146
2147static void
2148slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2149{
2150 struct coro *next = (struct coro *)slf_frame.data;
2151
2152 SvREFCNT_inc_NN (next->hv);
2153 prepare_schedule_to (aTHX_ ta, next);
2154}
2155
2156static void
2157slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2158{
2159 if (!items)
2160 croak ("Coro::schedule_to expects a coroutine argument, caught");
2161
2162 frame->data = (void *)SvSTATE (arg [0]);
2163 frame->prepare = slf_prepare_schedule_to;
2164 frame->check = slf_check_nop;
2165}
2166
2167static void
2168slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2169{
2170 api_ready (aTHX_ SvRV (coro_current));
2171
2172 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2173}
2174
2175static void
2176slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_cede;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2184{
2185 frame->prepare = prepare_cede_notself;
2186 frame->check = slf_check_nop;
2187}
2188
2189/*
2190 * these not obviously related functions are all rolled into one
2191 * function to increase chances that they all will call transfer with the same
2192 * stack offset
2193 * SLF stands for "schedule-like-function".
2194 */
2195static OP *
2196pp_slf (pTHX)
2197{
2198 I32 checkmark; /* mark SP to see how many elements check has pushed */
2199
2200 /* set up the slf frame, unless it has already been set-up */
2201 /* the latter happens when a new coro has been started */
2202 /* or when a new cctx was attached to an existing coroutine */
2203 if (expect_true (!slf_frame.prepare))
2204 {
2205 /* first iteration */
2206 dSP;
2207 SV **arg = PL_stack_base + TOPMARK + 1;
2208 int items = SP - arg; /* args without function object */
2209 SV *gv = *sp;
2210
2211 /* do a quick consistency check on the "function" object, and if it isn't */
2212 /* for us, divert to the real entersub */
2213 if (SvTYPE (gv) != SVt_PVGV
2214 || !GvCV (gv)
2215 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2216 return PL_ppaddr[OP_ENTERSUB](aTHX);
2217
2218 if (!(PL_op->op_flags & OPf_STACKED))
2219 {
2220 /* ampersand-form of call, use @_ instead of stack */
2221 AV *av = GvAV (PL_defgv);
2222 arg = AvARRAY (av);
2223 items = AvFILLp (av) + 1;
2224 }
2225
2226 /* now call the init function, which needs to set up slf_frame */
2227 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2228 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2229
2230 /* pop args */
2231 SP = PL_stack_base + POPMARK;
2232
2233 PUTBACK;
2234 }
2235
2236 /* now that we have a slf_frame, interpret it! */
2237 /* we use a callback system not to make the code needlessly */
2238 /* complicated, but so we can run multiple perl coros from one cctx */
2239
2240 do
2241 {
2242 struct coro_transfer_args ta;
2243
2244 slf_frame.prepare (aTHX_ &ta);
2245 TRANSFER (ta, 0);
2246
2247 checkmark = PL_stack_sp - PL_stack_base;
2248 }
2249 while (slf_frame.check (aTHX_ &slf_frame));
2250
2251 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2252
2253 /* exception handling */
2254 if (expect_false (CORO_THROW))
2255 {
2256 SV *exception = sv_2mortal (CORO_THROW);
2257
2258 CORO_THROW = 0;
2259 sv_setsv (ERRSV, exception);
2260 croak (0);
2261 }
2262
2263 /* return value handling - mostly like entersub */
2264 /* make sure we put something on the stack in scalar context */
2265 if (GIMME_V == G_SCALAR)
2266 {
2267 dSP;
2268 SV **bot = PL_stack_base + checkmark;
2269
2270 if (sp == bot) /* too few, push undef */
2271 bot [1] = &PL_sv_undef;
2272 else if (sp != bot + 1) /* too many, take last one */
2273 bot [1] = *sp;
2274
2275 SP = bot + 1;
2276
2277 PUTBACK;
2278 }
2279
2280 return NORMAL;
2281}
2282
2283static void
2284api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2285{
2286 int i;
2287 SV **arg = PL_stack_base + ax;
2288 int items = PL_stack_sp - arg + 1;
2289
2290 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2291
2292 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2293 && PL_op->op_ppaddr != pp_slf)
2294 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2295
2296 CvFLAGS (cv) |= CVf_SLF;
2297 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2298 slf_cv = cv;
2299
2300 /* we patch the op, and then re-run the whole call */
2301 /* we have to put the same argument on the stack for this to work */
2302 /* and this will be done by pp_restore */
2303 slf_restore.op_next = (OP *)&slf_restore;
2304 slf_restore.op_type = OP_CUSTOM;
2305 slf_restore.op_ppaddr = pp_restore;
2306 slf_restore.op_first = PL_op;
2307
2308 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2309
2310 if (PL_op->op_flags & OPf_STACKED)
2311 {
2312 if (items > slf_arga)
2313 {
2314 slf_arga = items;
2315 free (slf_argv);
2316 slf_argv = malloc (slf_arga * sizeof (SV *));
2317 }
2318
2319 slf_argc = items;
2320
2321 for (i = 0; i < items; ++i)
2322 slf_argv [i] = SvREFCNT_inc (arg [i]);
2323 }
2324 else
2325 slf_argc = 0;
2326
2327 PL_op->op_ppaddr = pp_slf;
2328 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2329
2330 PL_op = (OP *)&slf_restore;
2331}
2332
2333/*****************************************************************************/
2334/* dynamic wind */
2335
2336static void
2337on_enterleave_call (pTHX_ SV *cb)
2338{
2339 dSP;
2340
2341 PUSHSTACK;
2342
2343 PUSHMARK (SP);
2344 PUTBACK;
2345 call_sv (cb, G_VOID | G_DISCARD);
2346 SPAGAIN;
2347
2348 POPSTACK;
2349}
2350
2351static SV *
2352coro_avp_pop_and_free (AV **avp)
2353{
2354 AV *av = *avp;
2355 SV *res = av_pop (av);
2356
2357 if (AvFILLp (av) < 0)
2358 {
2359 *avp = 0;
2360 SvREFCNT_dec (av);
2361 }
2362
2363 return res;
2364}
2365
2366static void
2367coro_pop_on_enter (pTHX_ void *coro)
2368{
2369 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_enter);
2370 SvREFCNT_dec (cb);
2371}
2372
2373static void
2374coro_pop_on_leave (pTHX_ void *coro)
2375{
2376 SV *cb = coro_avp_pop_and_free (&((struct coro *)coro)->on_leave);
2377 on_enterleave_call (sv_2mortal (cb));
2378}
1755 2379
1756/*****************************************************************************/ 2380/*****************************************************************************/
1757/* PerlIO::cede */ 2381/* PerlIO::cede */
1758 2382
1759typedef struct 2383typedef struct
… …
1827 PerlIOBuf_get_cnt, 2451 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2452 PerlIOBuf_set_ptrcnt,
1829}; 2453};
1830 2454
1831/*****************************************************************************/ 2455/*****************************************************************************/
2456/* Coro::Semaphore & Coro::Signal */
1832 2457
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2458static SV *
1843pp_restore (pTHX) 2459coro_waitarray_new (pTHX_ int count)
1844{ 2460{
1845 dSP; 2461 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2462 AV *av = newAV ();
2463 SV **ary;
1846 2464
2465 /* unfortunately, building manually saves memory */
2466 Newx (ary, 2, SV *);
2467 AvALLOC (av) = ary;
2468#if PERL_VERSION_ATLEAST (5,10,0)
2469 AvARRAY (av) = ary;
2470#else
2471 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2472 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2473 SvPVX ((SV *)av) = (char *)ary;
2474#endif
2475 AvMAX (av) = 1;
2476 AvFILLp (av) = 0;
2477 ary [0] = newSViv (count);
2478
2479 return newRV_noinc ((SV *)av);
2480}
2481
2482/* semaphore */
2483
2484static void
2485coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2486{
2487 SV *count_sv = AvARRAY (av)[0];
2488 IV count = SvIVX (count_sv);
2489
2490 count += adjust;
2491 SvIVX (count_sv) = count;
2492
2493 /* now wake up as many waiters as are expected to lock */
2494 while (count > 0 && AvFILLp (av) > 0)
2495 {
2496 SV *cb;
2497
2498 /* swap first two elements so we can shift a waiter */
2499 AvARRAY (av)[0] = AvARRAY (av)[1];
2500 AvARRAY (av)[1] = count_sv;
2501 cb = av_shift (av);
2502
2503 if (SvOBJECT (cb))
2504 {
2505 api_ready (aTHX_ cb);
2506 --count;
2507 }
2508 else if (SvTYPE (cb) == SVt_PVCV)
2509 {
2510 dSP;
1847 PUSHMARK (SP); 2511 PUSHMARK (SP);
2512 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2513 PUTBACK;
2514 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2515 }
1848 2516
1849 EXTEND (SP, 3); 2517 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2518 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2519}
1856 2520
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2521static void
2522coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2523{
2524 /* call $sem->adjust (0) to possibly wake up some other waiters */
2525 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2526}
1858 2527
1859enum { 2528static int
1860 CORO_SLF_CUSTOM = 0, 2529slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2530{
1862 CORO_SLF_TRANSFER = 2 2531 AV *av = (AV *)frame->data;
2532 SV *count_sv = AvARRAY (av)[0];
2533
2534 /* if we are about to throw, don't actually acquire the lock, just throw */
2535 if (CORO_THROW)
2536 return 0;
2537 else if (SvIVX (count_sv) > 0)
2538 {
2539 SvSTATE_current->on_destroy = 0;
2540
2541 if (acquire)
2542 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2543 else
2544 coro_semaphore_adjust (aTHX_ av, 0);
2545
2546 return 0;
2547 }
2548 else
2549 {
2550 int i;
2551 /* if we were woken up but can't down, we look through the whole */
2552 /* waiters list and only add us if we aren't in there already */
2553 /* this avoids some degenerate memory usage cases */
2554
2555 for (i = 1; i <= AvFILLp (av); ++i)
2556 if (AvARRAY (av)[i] == SvRV (coro_current))
2557 return 1;
2558
2559 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2560 return 1;
2561 }
2562}
2563
2564static int
2565slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2566{
2567 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2568}
2569
2570static int
2571slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2572{
2573 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2574}
2575
2576static void
2577slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2578{
2579 AV *av = (AV *)SvRV (arg [0]);
2580
2581 if (SvIVX (AvARRAY (av)[0]) > 0)
2582 {
2583 frame->data = (void *)av;
2584 frame->prepare = prepare_nop;
2585 }
2586 else
2587 {
2588 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2589
2590 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2591 frame->prepare = prepare_schedule;
2592
2593 /* to avoid race conditions when a woken-up coro gets terminated */
2594 /* we arrange for a temporary on_destroy that calls adjust (0) */
2595 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2596 }
2597}
2598
2599static void
2600slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2601{
2602 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2603 frame->check = slf_check_semaphore_down;
2604}
2605
2606static void
2607slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2608{
2609 if (items >= 2)
2610 {
2611 /* callback form */
2612 AV *av = (AV *)SvRV (arg [0]);
2613 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2614
2615 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2616
2617 if (SvIVX (AvARRAY (av)[0]) > 0)
2618 coro_semaphore_adjust (aTHX_ av, 0);
2619
2620 frame->prepare = prepare_nop;
2621 frame->check = slf_check_nop;
2622 }
2623 else
2624 {
2625 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2626 frame->check = slf_check_semaphore_wait;
2627 }
2628}
2629
2630/* signal */
2631
2632static void
2633coro_signal_wake (pTHX_ AV *av, int count)
2634{
2635 SvIVX (AvARRAY (av)[0]) = 0;
2636
2637 /* now signal count waiters */
2638 while (count > 0 && AvFILLp (av) > 0)
2639 {
2640 SV *cb;
2641
2642 /* swap first two elements so we can shift a waiter */
2643 cb = AvARRAY (av)[0];
2644 AvARRAY (av)[0] = AvARRAY (av)[1];
2645 AvARRAY (av)[1] = cb;
2646
2647 cb = av_shift (av);
2648
2649 api_ready (aTHX_ cb);
2650 sv_setiv (cb, 0); /* signal waiter */
2651 SvREFCNT_dec (cb);
2652
2653 --count;
2654 }
2655}
2656
2657static int
2658slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2659{
2660 /* if we are about to throw, also stop waiting */
2661 return SvROK ((SV *)frame->data) && !CORO_THROW;
2662}
2663
2664static void
2665slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2666{
2667 AV *av = (AV *)SvRV (arg [0]);
2668
2669 if (SvIVX (AvARRAY (av)[0]))
2670 {
2671 SvIVX (AvARRAY (av)[0]) = 0;
2672 frame->prepare = prepare_nop;
2673 frame->check = slf_check_nop;
2674 }
2675 else
2676 {
2677 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2678
2679 av_push (av, waiter);
2680
2681 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2682 frame->prepare = prepare_schedule;
2683 frame->check = slf_check_signal_wait;
2684 }
2685}
2686
2687/*****************************************************************************/
2688/* Coro::AIO */
2689
2690#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2691
2692/* helper storage struct */
2693struct io_state
2694{
2695 int errorno;
2696 I32 laststype; /* U16 in 5.10.0 */
2697 int laststatval;
2698 Stat_t statcache;
1863}; 2699};
1864 2700
1865/* declare prototype */ 2701static void
1866XS(XS_Coro__State__set_stacklevel); 2702coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 2703{
2704 dXSARGS;
2705 AV *state = (AV *)GENSUB_ARG;
2706 SV *coro = av_pop (state);
2707 SV *data_sv = newSV (sizeof (struct io_state));
2708
2709 av_extend (state, items - 1);
2710
2711 sv_upgrade (data_sv, SVt_PV);
2712 SvCUR_set (data_sv, sizeof (struct io_state));
2713 SvPOK_only (data_sv);
2714
2715 {
2716 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2717
2718 data->errorno = errno;
2719 data->laststype = PL_laststype;
2720 data->laststatval = PL_laststatval;
2721 data->statcache = PL_statcache;
2722 }
2723
2724 /* now build the result vector out of all the parameters and the data_sv */
2725 {
2726 int i;
2727
2728 for (i = 0; i < items; ++i)
2729 av_push (state, SvREFCNT_inc_NN (ST (i)));
2730 }
2731
2732 av_push (state, data_sv);
2733
2734 api_ready (aTHX_ coro);
2735 SvREFCNT_dec (coro);
2736 SvREFCNT_dec ((AV *)state);
2737}
2738
2739static int
2740slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2741{
2742 AV *state = (AV *)frame->data;
2743
2744 /* if we are about to throw, return early */
2745 /* this does not cancel the aio request, but at least */
2746 /* it quickly returns */
2747 if (CORO_THROW)
2748 return 0;
2749
2750 /* one element that is an RV? repeat! */
2751 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2752 return 1;
2753
2754 /* restore status */
2755 {
2756 SV *data_sv = av_pop (state);
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 errno = data->errorno;
2760 PL_laststype = data->laststype;
2761 PL_laststatval = data->laststatval;
2762 PL_statcache = data->statcache;
2763
2764 SvREFCNT_dec (data_sv);
2765 }
2766
2767 /* push result values */
2768 {
1877 dSP; 2769 dSP;
1878 struct transfer_args ta; 2770 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 2771
1884 /* do a quick consistency check on the "function" object, and if it isn't */ 2772 EXTEND (SP, AvFILLp (state) + 1);
1885 /* for us, divert to the real entersub */ 2773 for (i = 0; i <= AvFILLp (state); ++i)
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) 2774 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888 2775
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2776 PUTBACK;
2777 }
1901 2778
1902 if (!ix) 2779 return 0;
1903 { 2780}
1904 slf = (struct CoroSLF *)CvSTART (GvCV (*sp)); 2781
1905 ix = slf->prepare (aTHX_ arg, items); 2782static void
2783slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2784{
2785 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2786 SV *coro_hv = SvRV (coro_current);
2787 struct coro *coro = SvSTATE_hv (coro_hv);
2788
2789 /* put our coroutine id on the state arg */
2790 av_push (state, SvREFCNT_inc_NN (coro_hv));
2791
2792 /* first see whether we have a non-zero priority and set it as AIO prio */
2793 if (coro->prio)
1906 } 2794 {
2795 dSP;
1907 2796
1908 switch (ix) 2797 static SV *prio_cv;
2798 static SV *prio_sv;
2799
2800 if (expect_false (!prio_cv))
2801 {
2802 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2803 prio_sv = newSViv (0);
2804 }
2805
2806 PUSHMARK (SP);
2807 sv_setiv (prio_sv, coro->prio);
2808 XPUSHs (prio_sv);
2809
2810 PUTBACK;
2811 call_sv (prio_cv, G_VOID | G_DISCARD);
1909 { 2812 }
1910 case CORO_SLF_SET_STACKLEVEL:
1911 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912 break;
1913 2813
1914 case CORO_SLF_TRANSFER: 2814 /* now call the original request */
1915 if (items != 2) 2815 {
1916 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2816 dSP;
2817 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2818 int i;
1917 2819
1918 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2820 PUSHMARK (SP);
1919 break;
1920 2821
1921 case CORO_SLF_SCHEDULE: 2822 /* first push all args to the stack */
1922 prepare_schedule (aTHX_ &ta); 2823 EXTEND (SP, items + 1);
1923 break;
1924 2824
1925 case CORO_SLF_CEDE: 2825 for (i = 0; i < items; ++i)
1926 prepare_cede (aTHX_ &ta); 2826 PUSHs (arg [i]);
1927 break;
1928 2827
1929 case CORO_SLF_CEDE_NOTSELF: 2828 /* now push the callback closure */
1930 prepare_cede_notself (aTHX_ &ta); 2829 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1931 break;
1932 2830
1933 default: 2831 /* now call the AIO function - we assume our request is uncancelable */
1934 abort ();
1935 }
1936
1937 do
1938 TRANSFER (ta, 0);
1939 while (slf && slf->check (aTHX));
1940
1941 SPAGAIN;
1942
1943 PUTBACK; 2832 PUTBACK;
1944 SLF_TAIL; 2833 call_sv ((SV *)req, G_VOID | G_DISCARD);
1945 SPAGAIN; 2834 }
1946 RETURN;
1947}
1948 2835
1949static void 2836 /* now that the requets is going, we loop toll we have a result */
1950coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2837 frame->data = (void *)state;
1951{ 2838 frame->prepare = prepare_schedule;
1952 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2839 frame->check = slf_check_aio_req;
1953
1954 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1955 slf_cv = cv;
1956
1957 /* we patch the op, and then re-run the whole call */
1958 /* we have to put the same argument on the stack for this to work */
1959 /* and this will be done by pp_restore */
1960 slf_restore.op_next = (OP *)&slf_restore;
1961 slf_restore.op_type = OP_NULL;
1962 slf_restore.op_ppaddr = pp_restore;
1963 slf_restore.op_first = PL_op;
1964
1965 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1966 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1967
1968 PL_op->op_ppaddr = pp_slf;
1969 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1970
1971 PL_op = (OP *)&slf_restore;
1972} 2840}
2841
2842static void
2843coro_aio_req_xs (pTHX_ CV *cv)
2844{
2845 dXSARGS;
2846
2847 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2848
2849 XSRETURN_EMPTY;
2850}
2851
2852/*****************************************************************************/
2853
2854#if CORO_CLONE
2855# include "clone.c"
2856#endif
1973 2857
1974MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2858MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1975 2859
1976PROTOTYPES: DISABLE 2860PROTOTYPES: DISABLE
1977 2861
1978BOOT: 2862BOOT:
1979{ 2863{
1980#ifdef USE_ITHREADS 2864#ifdef USE_ITHREADS
1981 MUTEX_INIT (&coro_lock);
1982# if CORO_PTHREAD 2865# if CORO_PTHREAD
1983 coro_thx = PERL_GET_CONTEXT; 2866 coro_thx = PERL_GET_CONTEXT;
1984# endif 2867# endif
1985#endif 2868#endif
1986 BOOT_PAGESIZE; 2869 BOOT_PAGESIZE;
2870
2871 cctx_current = cctx_new_empty ();
1987 2872
1988 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2873 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1989 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2874 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1990 2875
1991 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2876 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2007 main_top_env = PL_top_env; 2892 main_top_env = PL_top_env;
2008 2893
2009 while (main_top_env->je_prev) 2894 while (main_top_env->je_prev)
2010 main_top_env = main_top_env->je_prev; 2895 main_top_env = main_top_env->je_prev;
2011 2896
2897 {
2898 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2899
2900 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2901 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2902
2903 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2904 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2905 }
2906
2012 coroapi.ver = CORO_API_VERSION; 2907 coroapi.ver = CORO_API_VERSION;
2013 coroapi.rev = CORO_API_REVISION; 2908 coroapi.rev = CORO_API_REVISION;
2909
2014 coroapi.transfer = api_transfer; 2910 coroapi.transfer = api_transfer;
2911
2912 coroapi.sv_state = SvSTATE_;
2913 coroapi.execute_slf = api_execute_slf;
2914 coroapi.prepare_nop = prepare_nop;
2915 coroapi.prepare_schedule = prepare_schedule;
2916 coroapi.prepare_cede = prepare_cede;
2917 coroapi.prepare_cede_notself = prepare_cede_notself;
2015 2918
2016 { 2919 {
2017 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2920 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018 2921
2019 if (!svp) croak ("Time::HiRes is required"); 2922 if (!svp) croak ("Time::HiRes is required");
… …
2025 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2928 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2026} 2929}
2027 2930
2028SV * 2931SV *
2029new (char *klass, ...) 2932new (char *klass, ...)
2933 ALIAS:
2934 Coro::new = 1
2030 CODE: 2935 CODE:
2031{ 2936{
2032 struct coro *coro; 2937 struct coro *coro;
2033 MAGIC *mg; 2938 MAGIC *mg;
2034 HV *hv; 2939 HV *hv;
2940 CV *cb;
2035 int i; 2941 int i;
2942
2943 if (items > 1)
2944 {
2945 cb = coro_sv_2cv (aTHX_ ST (1));
2946
2947 if (!ix)
2948 {
2949 if (CvISXSUB (cb))
2950 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2951
2952 if (!CvROOT (cb))
2953 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2954 }
2955 }
2036 2956
2037 Newz (0, coro, 1, struct coro); 2957 Newz (0, coro, 1, struct coro);
2038 coro->args = newAV (); 2958 coro->args = newAV ();
2039 coro->flags = CF_NEW; 2959 coro->flags = CF_NEW;
2040 2960
… …
2045 coro->hv = hv = newHV (); 2965 coro->hv = hv = newHV ();
2046 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2966 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2047 mg->mg_flags |= MGf_DUP; 2967 mg->mg_flags |= MGf_DUP;
2048 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2968 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2049 2969
2970 if (items > 1)
2971 {
2050 av_extend (coro->args, items - 1); 2972 av_extend (coro->args, items - 1 + ix - 1);
2973
2974 if (ix)
2975 {
2976 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2977 cb = cv_coro_run;
2978 }
2979
2980 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2981
2051 for (i = 1; i < items; i++) 2982 for (i = 2; i < items; i++)
2052 av_push (coro->args, newSVsv (ST (i))); 2983 av_push (coro->args, newSVsv (ST (i)));
2984 }
2053} 2985}
2054 OUTPUT: 2986 OUTPUT:
2055 RETVAL 2987 RETVAL
2056 2988
2057void 2989void
2058_set_stacklevel (...) 2990transfer (...)
2059 ALIAS: 2991 PROTOTYPE: $$
2060 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 2992 CODE:
2061 Coro::State::transfer = CORO_SLF_TRANSFER 2993 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2062 Coro::schedule = CORO_SLF_SCHEDULE
2063 Coro::cede = CORO_SLF_CEDE
2064 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2065 CODE:
2066 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2067 2994
2068bool 2995bool
2069_destroy (SV *coro_sv) 2996_destroy (SV *coro_sv)
2070 CODE: 2997 CODE:
2071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2998 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2076_exit (int code) 3003_exit (int code)
2077 PROTOTYPE: $ 3004 PROTOTYPE: $
2078 CODE: 3005 CODE:
2079 _exit (code); 3006 _exit (code);
2080 3007
3008SV *
3009clone (Coro::State coro)
3010 CODE:
3011{
3012#if CORO_CLONE
3013 struct coro *ncoro = coro_clone (aTHX_ coro);
3014 MAGIC *mg;
3015 /* TODO: too much duplication */
3016 ncoro->hv = newHV ();
3017 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3018 mg->mg_flags |= MGf_DUP;
3019 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3020#else
3021 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3022#endif
3023}
3024 OUTPUT:
3025 RETVAL
3026
2081int 3027int
2082cctx_stacksize (int new_stacksize = 0) 3028cctx_stacksize (int new_stacksize = 0)
3029 PROTOTYPE: ;$
2083 CODE: 3030 CODE:
2084 RETVAL = cctx_stacksize; 3031 RETVAL = cctx_stacksize;
2085 if (new_stacksize) 3032 if (new_stacksize)
2086 { 3033 {
2087 cctx_stacksize = new_stacksize; 3034 cctx_stacksize = new_stacksize;
… …
2090 OUTPUT: 3037 OUTPUT:
2091 RETVAL 3038 RETVAL
2092 3039
2093int 3040int
2094cctx_max_idle (int max_idle = 0) 3041cctx_max_idle (int max_idle = 0)
3042 PROTOTYPE: ;$
2095 CODE: 3043 CODE:
2096 RETVAL = cctx_max_idle; 3044 RETVAL = cctx_max_idle;
2097 if (max_idle > 1) 3045 if (max_idle > 1)
2098 cctx_max_idle = max_idle; 3046 cctx_max_idle = max_idle;
2099 OUTPUT: 3047 OUTPUT:
2100 RETVAL 3048 RETVAL
2101 3049
2102int 3050int
2103cctx_count () 3051cctx_count ()
3052 PROTOTYPE:
2104 CODE: 3053 CODE:
2105 RETVAL = cctx_count; 3054 RETVAL = cctx_count;
2106 OUTPUT: 3055 OUTPUT:
2107 RETVAL 3056 RETVAL
2108 3057
2109int 3058int
2110cctx_idle () 3059cctx_idle ()
3060 PROTOTYPE:
2111 CODE: 3061 CODE:
2112 RETVAL = cctx_idle; 3062 RETVAL = cctx_idle;
2113 OUTPUT: 3063 OUTPUT:
2114 RETVAL 3064 RETVAL
2115 3065
2116void 3066void
2117list () 3067list ()
3068 PROTOTYPE:
2118 PPCODE: 3069 PPCODE:
2119{ 3070{
2120 struct coro *coro; 3071 struct coro *coro;
2121 for (coro = coro_first; coro; coro = coro->next) 3072 for (coro = coro_first; coro; coro = coro->next)
2122 if (coro->hv) 3073 if (coro->hv)
… …
2129 eval = 1 3080 eval = 1
2130 CODE: 3081 CODE:
2131{ 3082{
2132 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3083 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2133 { 3084 {
2134 struct coro temp; 3085 struct coro *current = SvSTATE_current;
2135 3086
2136 if (!(coro->flags & CF_RUNNING)) 3087 if (current != coro)
2137 { 3088 {
2138 PUTBACK; 3089 PUTBACK;
2139 save_perl (aTHX_ &temp); 3090 save_perl (aTHX_ current);
2140 load_perl (aTHX_ coro); 3091 load_perl (aTHX_ coro);
3092 SPAGAIN;
2141 } 3093 }
2142 3094
2143 {
2144 dSP;
2145 ENTER;
2146 SAVETMPS;
2147 PUTBACK;
2148 PUSHSTACK; 3095 PUSHSTACK;
3096
2149 PUSHMARK (SP); 3097 PUSHMARK (SP);
3098 PUTBACK;
2150 3099
2151 if (ix) 3100 if (ix)
2152 eval_sv (coderef, 0); 3101 eval_sv (coderef, 0);
2153 else 3102 else
2154 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3103 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2155 3104
3105 SPAGAIN;
2156 POPSTACK; 3106 POPSTACK;
2157 SPAGAIN;
2158 FREETMPS;
2159 LEAVE;
2160 PUTBACK;
2161 }
2162 3107
2163 if (!(coro->flags & CF_RUNNING)) 3108 if (current != coro)
2164 { 3109 {
3110 PUTBACK;
2165 save_perl (aTHX_ coro); 3111 save_perl (aTHX_ coro);
2166 load_perl (aTHX_ &temp); 3112 load_perl (aTHX_ current);
2167 SPAGAIN; 3113 SPAGAIN;
2168 } 3114 }
2169 } 3115 }
2170} 3116}
2171 3117
… …
2184 3130
2185void 3131void
2186throw (Coro::State self, SV *throw = &PL_sv_undef) 3132throw (Coro::State self, SV *throw = &PL_sv_undef)
2187 PROTOTYPE: $;$ 3133 PROTOTYPE: $;$
2188 CODE: 3134 CODE:
3135{
3136 struct coro *current = SvSTATE_current;
3137 SV **throwp = self == current ? &CORO_THROW : &self->except;
2189 SvREFCNT_dec (self->throw); 3138 SvREFCNT_dec (*throwp);
2190 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3139 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3140}
2191 3141
2192void 3142void
2193api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3143api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3144 PROTOTYPE: $;$
2194 C_ARGS: aTHX_ coro, flags 3145 C_ARGS: aTHX_ coro, flags
2195 3146
2196SV * 3147SV *
2197has_cctx (Coro::State coro) 3148has_cctx (Coro::State coro)
2198 PROTOTYPE: $ 3149 PROTOTYPE: $
2199 CODE: 3150 CODE:
2200 RETVAL = boolSV (!!coro->cctx); 3151 /* maybe manage the running flag differently */
3152 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2201 OUTPUT: 3153 OUTPUT:
2202 RETVAL 3154 RETVAL
2203 3155
2204int 3156int
2205is_traced (Coro::State coro) 3157is_traced (Coro::State coro)
… …
2223 OUTPUT: 3175 OUTPUT:
2224 RETVAL 3176 RETVAL
2225 3177
2226void 3178void
2227force_cctx () 3179force_cctx ()
3180 PROTOTYPE:
2228 CODE: 3181 CODE:
2229 struct coro *coro = SvSTATE (coro_current);
2230 coro->cctx->idle_sp = 0; 3182 cctx_current->idle_sp = 0;
2231 3183
2232void 3184void
2233swap_defsv (Coro::State self) 3185swap_defsv (Coro::State self)
2234 PROTOTYPE: $ 3186 PROTOTYPE: $
2235 ALIAS: 3187 ALIAS:
2236 swap_defav = 1 3188 swap_defav = 1
2237 CODE: 3189 CODE:
2238 if (!self->slot) 3190 if (!self->slot)
2239 croak ("cannot swap state with coroutine that has no saved state"); 3191 croak ("cannot swap state with coroutine that has no saved state,");
2240 else 3192 else
2241 { 3193 {
2242 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3194 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3195 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2244 3196
2245 SV *tmp = *src; *src = *dst; *dst = tmp; 3197 SV *tmp = *src; *src = *dst; *dst = tmp;
2246 } 3198 }
2247 3199
3200
2248MODULE = Coro::State PACKAGE = Coro 3201MODULE = Coro::State PACKAGE = Coro
2249 3202
2250BOOT: 3203BOOT:
2251{ 3204{
2252 int i; 3205 int i;
2253 3206
2254 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2255 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3207 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2256 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3208 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2257 3209 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3210 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2258 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3211 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2259 SvREADONLY_on (coro_current); 3212 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3213 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3214 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3215 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3216
3217 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3218 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3219 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3220 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2260 3221
2261 coro_stash = gv_stashpv ("Coro", TRUE); 3222 coro_stash = gv_stashpv ("Coro", TRUE);
2262 3223
2263 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3224 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2264 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3225 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2272 3233
2273 { 3234 {
2274 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3235 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2275 3236
2276 coroapi.schedule = api_schedule; 3237 coroapi.schedule = api_schedule;
3238 coroapi.schedule_to = api_schedule_to;
2277 coroapi.cede = api_cede; 3239 coroapi.cede = api_cede;
2278 coroapi.cede_notself = api_cede_notself; 3240 coroapi.cede_notself = api_cede_notself;
2279 coroapi.ready = api_ready; 3241 coroapi.ready = api_ready;
2280 coroapi.is_ready = api_is_ready; 3242 coroapi.is_ready = api_is_ready;
2281 coroapi.nready = coro_nready; 3243 coroapi.nready = coro_nready;
2282 coroapi.current = coro_current; 3244 coroapi.current = coro_current;
2283 3245
2284 GCoroAPI = &coroapi; 3246 /*GCoroAPI = &coroapi;*/
2285 sv_setiv (sv, (IV)&coroapi); 3247 sv_setiv (sv, (IV)&coroapi);
2286 SvREADONLY_on (sv); 3248 SvREADONLY_on (sv);
2287 } 3249 }
2288} 3250}
3251
3252void
3253terminate (...)
3254 CODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3256
3257void
3258schedule (...)
3259 CODE:
3260 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3261
3262void
3263schedule_to (...)
3264 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3266
3267void
3268cede_to (...)
3269 CODE:
3270 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3271
3272void
3273cede (...)
3274 CODE:
3275 CORO_EXECUTE_SLF_XS (slf_init_cede);
3276
3277void
3278cede_notself (...)
3279 CODE:
3280 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3281
3282void
3283_cancel (Coro::State self)
3284 CODE:
3285 coro_state_destroy (aTHX_ self);
3286 coro_call_on_destroy (aTHX_ self);
2289 3287
2290void 3288void
2291_set_current (SV *current) 3289_set_current (SV *current)
2292 PROTOTYPE: $ 3290 PROTOTYPE: $
2293 CODE: 3291 CODE:
… …
2296 3294
2297void 3295void
2298_set_readyhook (SV *hook) 3296_set_readyhook (SV *hook)
2299 PROTOTYPE: $ 3297 PROTOTYPE: $
2300 CODE: 3298 CODE:
2301 LOCK;
2302 SvREFCNT_dec (coro_readyhook); 3299 SvREFCNT_dec (coro_readyhook);
2303 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3300 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304 UNLOCK;
2305 3301
2306int 3302int
2307prio (Coro::State coro, int newprio = 0) 3303prio (Coro::State coro, int newprio = 0)
3304 PROTOTYPE: $;$
2308 ALIAS: 3305 ALIAS:
2309 nice = 1 3306 nice = 1
2310 CODE: 3307 CODE:
2311{ 3308{
2312 RETVAL = coro->prio; 3309 RETVAL = coro->prio;
… …
2339 CODE: 3336 CODE:
2340 RETVAL = coro_nready; 3337 RETVAL = coro_nready;
2341 OUTPUT: 3338 OUTPUT:
2342 RETVAL 3339 RETVAL
2343 3340
2344# for async_pool speedup
2345void 3341void
2346_pool_1 (SV *cb) 3342_pool_handler (...)
2347 CODE: 3343 CODE:
2348{ 3344 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2349 struct coro *coro = SvSTATE (coro_current);
2350 HV *hv = (HV *)SvRV (coro_current);
2351 AV *defav = GvAV (PL_defgv);
2352 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2353 AV *invoke_av;
2354 int i, len;
2355 3345
2356 if (!invoke) 3346void
3347async_pool (SV *cv, ...)
3348 PROTOTYPE: &@
3349 PPCODE:
3350{
3351 HV *hv = (HV *)av_pop (av_async_pool);
3352 AV *av = newAV ();
3353 SV *cb = ST (0);
3354 int i;
3355
3356 av_extend (av, items - 2);
3357 for (i = 1; i < items; ++i)
3358 av_push (av, SvREFCNT_inc_NN (ST (i)));
3359
3360 if ((SV *)hv == &PL_sv_undef)
2357 { 3361 {
2358 SV *old = PL_diehook; 3362 PUSHMARK (SP);
2359 PL_diehook = 0; 3363 EXTEND (SP, 2);
2360 SvREFCNT_dec (old); 3364 PUSHs (sv_Coro);
2361 croak ("\3async_pool terminate\2\n"); 3365 PUSHs ((SV *)cv_pool_handler);
3366 PUTBACK;
3367 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3368 SPAGAIN;
3369
3370 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2362 } 3371 }
2363 3372
2364 SvREFCNT_dec (coro->saved_deffh);
2365 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2366
2367 hv_store (hv, "desc", sizeof ("desc") - 1,
2368 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2369
2370 invoke_av = (AV *)SvRV (invoke);
2371 len = av_len (invoke_av);
2372
2373 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2374
2375 if (len > 0)
2376 { 3373 {
2377 av_fill (defav, len - 1); 3374 struct coro *coro = SvSTATE_hv (hv);
2378 for (i = 0; i < len; ++i) 3375
2379 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3376 assert (!coro->invoke_cb);
3377 assert (!coro->invoke_av);
3378 coro->invoke_cb = SvREFCNT_inc (cb);
3379 coro->invoke_av = av;
2380 } 3380 }
2381 3381
3382 api_ready (aTHX_ (SV *)hv);
3383
3384 if (GIMME_V != G_VOID)
3385 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3386 else
2382 SvREFCNT_dec (invoke); 3387 SvREFCNT_dec (hv);
2383} 3388}
2384 3389
2385void 3390SV *
2386_pool_2 (SV *cb) 3391rouse_cb ()
3392 PROTOTYPE:
2387 CODE: 3393 CODE:
2388{ 3394 RETVAL = coro_new_rouse_cb (aTHX);
2389 struct coro *coro = SvSTATE (coro_current);
2390
2391 sv_setsv (cb, &PL_sv_undef);
2392
2393 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2394 coro->saved_deffh = 0;
2395
2396 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2397 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2398 {
2399 SV *old = PL_diehook;
2400 PL_diehook = 0;
2401 SvREFCNT_dec (old);
2402 croak ("\3async_pool terminate\2\n");
2403 }
2404
2405 av_clear (GvAV (PL_defgv));
2406 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2407 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2408
2409 coro->prio = 0;
2410
2411 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2412 api_trace (aTHX_ coro_current, 0);
2413
2414 av_push (av_async_pool, newSVsv (coro_current));
2415}
2416
2417#if 0
2418
2419void
2420_generator_call (...)
2421 PROTOTYPE: @
2422 PPCODE:
2423 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2424 xxxx
2425 abort ();
2426
2427SV *
2428gensub (SV *sub, ...)
2429 PROTOTYPE: &;@
2430 CODE:
2431{
2432 struct coro *coro;
2433 MAGIC *mg;
2434 CV *xcv;
2435 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2436 int i;
2437
2438 CvGV (ncv) = CvGV (cv);
2439 CvFILE (ncv) = CvFILE (cv);
2440
2441 Newz (0, coro, 1, struct coro);
2442 coro->args = newAV ();
2443 coro->flags = CF_NEW;
2444
2445 av_extend (coro->args, items - 1);
2446 for (i = 1; i < items; i++)
2447 av_push (coro->args, newSVsv (ST (i)));
2448
2449 CvISXSUB_on (ncv);
2450 CvXSUBANY (ncv).any_ptr = (void *)coro;
2451
2452 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2453
2454 CvXSUB (ncv) = CvXSUB (xcv);
2455 CvANON_on (ncv);
2456
2457 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2458 RETVAL = newRV_noinc ((SV *)ncv);
2459}
2460 OUTPUT: 3395 OUTPUT:
2461 RETVAL 3396 RETVAL
2462 3397
2463#endif
2464
2465
2466MODULE = Coro::State PACKAGE = Coro::AIO
2467
2468void 3398void
2469_get_state (SV *self) 3399rouse_wait (...)
3400 PROTOTYPE: ;$
2470 PPCODE: 3401 PPCODE:
2471{ 3402 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2472 AV *defav = GvAV (PL_defgv);
2473 AV *av = newAV ();
2474 int i;
2475 SV *data_sv = newSV (sizeof (struct io_state));
2476 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2477 SvCUR_set (data_sv, sizeof (struct io_state));
2478 SvPOK_only (data_sv);
2479
2480 data->errorno = errno;
2481 data->laststype = PL_laststype;
2482 data->laststatval = PL_laststatval;
2483 data->statcache = PL_statcache;
2484
2485 av_extend (av, AvFILLp (defav) + 1 + 1);
2486
2487 for (i = 0; i <= AvFILLp (defav); ++i)
2488 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2489
2490 av_push (av, data_sv);
2491
2492 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2493
2494 api_ready (aTHX_ self);
2495}
2496 3403
2497void 3404void
2498_set_state (SV *state) 3405on_enter (SV *block)
3406 ALIAS:
3407 on_leave = 1
2499 PROTOTYPE: $ 3408 PROTOTYPE: &
2500 PPCODE: 3409 CODE:
2501{ 3410{
3411 struct coro *coro = SvSTATE_current;
3412 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3413
3414 block = (SV *)coro_sv_2cv (block);
3415
3416 if (!*avp)
3417 *avp = newAV ();
3418
3419 av_push (*avp, SvREFCNT_inc (block));
3420
3421 if (!ix)
3422 on_enterleave_call (aTHX_ block);
3423
3424 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3425 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3426 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
3427}
3428
3429
3430MODULE = Coro::State PACKAGE = PerlIO::cede
3431
3432BOOT:
3433 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3434
3435
3436MODULE = Coro::State PACKAGE = Coro::Semaphore
3437
3438SV *
3439new (SV *klass, SV *count = 0)
3440 CODE:
3441 RETVAL = sv_bless (
3442 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3443 GvSTASH (CvGV (cv))
3444 );
3445 OUTPUT:
3446 RETVAL
3447
3448# helper for Coro::Channel
3449SV *
3450_alloc (int count)
3451 CODE:
3452 RETVAL = coro_waitarray_new (aTHX_ count);
3453 OUTPUT:
3454 RETVAL
3455
3456SV *
3457count (SV *self)
3458 CODE:
3459 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3460 OUTPUT:
3461 RETVAL
3462
3463void
3464up (SV *self, int adjust = 1)
3465 ALIAS:
3466 adjust = 1
3467 CODE:
3468 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3469
3470void
3471down (...)
3472 CODE:
3473 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3474
3475void
3476wait (...)
3477 CODE:
3478 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3479
3480void
3481try (SV *self)
3482 PPCODE:
3483{
3484 AV *av = (AV *)SvRV (self);
3485 SV *count_sv = AvARRAY (av)[0];
3486 IV count = SvIVX (count_sv);
3487
3488 if (count > 0)
3489 {
3490 --count;
3491 SvIVX (count_sv) = count;
3492 XSRETURN_YES;
3493 }
3494 else
3495 XSRETURN_NO;
3496}
3497
3498void
3499waiters (SV *self)
3500 PPCODE:
3501{
3502 AV *av = (AV *)SvRV (self);
3503 int wcount = AvFILLp (av) + 1 - 1;
3504
3505 if (GIMME_V == G_SCALAR)
3506 XPUSHs (sv_2mortal (newSViv (wcount)));
3507 else
3508 {
3509 int i;
3510 EXTEND (SP, wcount);
3511 for (i = 1; i <= wcount; ++i)
3512 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3513 }
3514}
3515
3516MODULE = Coro::State PACKAGE = Coro::Signal
3517
3518SV *
3519new (SV *klass)
3520 CODE:
3521 RETVAL = sv_bless (
3522 coro_waitarray_new (aTHX_ 0),
3523 GvSTASH (CvGV (cv))
3524 );
3525 OUTPUT:
3526 RETVAL
3527
3528void
3529wait (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3532
3533void
3534broadcast (SV *self)
3535 CODE:
3536{
2502 AV *av = (AV *)SvRV (state); 3537 AV *av = (AV *)SvRV (self);
2503 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3538 coro_signal_wake (aTHX_ av, AvFILLp (av));
2504 int i; 3539}
2505 3540
2506 errno = data->errorno; 3541void
2507 PL_laststype = data->laststype; 3542send (SV *self)
2508 PL_laststatval = data->laststatval; 3543 CODE:
2509 PL_statcache = data->statcache; 3544{
3545 AV *av = (AV *)SvRV (self);
2510 3546
2511 EXTEND (SP, AvFILLp (av)); 3547 if (AvFILLp (av))
2512 for (i = 0; i < AvFILLp (av); ++i) 3548 coro_signal_wake (aTHX_ av, 1);
2513 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3549 else
3550 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2514} 3551}
3552
3553IV
3554awaited (SV *self)
3555 CODE:
3556 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3557 OUTPUT:
3558 RETVAL
2515 3559
2516 3560
2517MODULE = Coro::State PACKAGE = Coro::AnyEvent 3561MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518 3562
2519BOOT: 3563BOOT:
2520 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3564 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521 3565
2522SV * 3566void
2523_schedule (...) 3567_schedule (...)
2524 PROTOTYPE: @
2525 CODE: 3568 CODE:
2526{ 3569{
2527 static int incede; 3570 static int incede;
2528 3571
2529 api_cede_notself (aTHX); 3572 api_cede_notself (aTHX);
… …
2535 sv_setsv (sv_activity, &PL_sv_undef); 3578 sv_setsv (sv_activity, &PL_sv_undef);
2536 if (coro_nready >= incede) 3579 if (coro_nready >= incede)
2537 { 3580 {
2538 PUSHMARK (SP); 3581 PUSHMARK (SP);
2539 PUTBACK; 3582 PUTBACK;
2540 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3583 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2541 SPAGAIN;
2542 } 3584 }
2543 3585
2544 --incede; 3586 --incede;
2545} 3587}
2546 3588
2547 3589
2548MODULE = Coro::State PACKAGE = PerlIO::cede 3590MODULE = Coro::State PACKAGE = Coro::AIO
2549 3591
2550BOOT: 3592void
2551 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3593_register (char *target, char *proto, SV *req)
3594 CODE:
3595{
3596 CV *req_cv = coro_sv_2cv (aTHX_ req);
3597 /* newXSproto doesn't return the CV on 5.8 */
3598 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3599 sv_setpv ((SV *)slf_cv, proto);
3600 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3601}
2552 3602

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