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Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs.
Revision 1.328 by root, Tue Nov 25 09:49:43 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 162#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 163
174static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
175 169
176static U32 cctx_gen; 170static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 174static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 177
185struct transfer_args 178static AV *av_destroy; /* destruction queue */
186{ 179static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
188};
189 181
190static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 184static SV *rv_diehook;
193static SV *rv_warnhook; 185static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
195 187
196/* async_pool helper stuff */ 188/* async_pool helper stuff */
197static SV *sv_pool_rss; 189static SV *sv_pool_rss;
198static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
200 196
201/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
202static SV *sv_activity; 198static SV *sv_activity;
203 199
204static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 210};
215 211
216/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 213typedef struct coro_cctx
214{
218 struct coro_cctx *next; 215 struct coro_cctx *next;
219 216
220 /* the stack */ 217 /* the stack */
221 void *sptr; 218 void *sptr;
222 size_t ssize; 219 size_t ssize;
… …
231#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
232 int valgrind_id; 229 int valgrind_id;
233#endif 230#endif
234 unsigned char flags; 231 unsigned char flags;
235} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
236 237
237enum { 238enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 243};
243 244
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 246typedef struct
247{
246 SV *defsv; 248 SV *defsv;
247 AV *defav; 249 AV *defav;
248 SV *errsv; 250 SV *errsv;
249 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
250#define VAR(name,type) type name; 253#define VAR(name,type) type name;
251# include "state.h" 254# include "state.h"
252#undef VAR 255#undef VAR
253} perl_slots; 256} perl_slots;
254 257
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 259
257/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
258struct coro { 261struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 263 coro_cctx *cctx;
261 264
262 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 267 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
265 269
270 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
270 276
271 /* statistics */ 277 /* statistics */
272 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
273 279
274 /* coro process data */ 280 /* coro process data */
275 int prio; 281 int prio;
276 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
277 284
278 /* async_pool */ 285 /* async_pool */
279 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
280 289
281 /* linked list */ 290 /* linked list */
282 struct coro *next, *prev; 291 struct coro *next, *prev;
283}; 292};
284 293
285typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
287 301
288/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
289 303
290#define PRIO_MAX 3 304#define PRIO_MAX 3
291#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
296 310
297/* for Coro.pm */ 311/* for Coro.pm */
298static SV *coro_current; 312static SV *coro_current;
299static SV *coro_readyhook; 313static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
303 318
304/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
305 320
306static SV * 321static SV *
307coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 346 get_hv (name, create);
332#endif 347#endif
333 return get_hv (name, create); 348 return get_hv (name, create);
334} 349}
335 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
336static AV * 360static AV *
337coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
338{ 362{
339 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
341 365
342 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 417
394 return 0; 418 return 0;
395} 419}
396 420
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 423
400static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 425 0, 0, 0, 0,
402 coro_cv_free 426 coro_cv_free
403}; 427};
404 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
405#define CORO_MAGIC(sv, type) \ 434#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 437 : 0)
411 438
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 441
415INLINE struct coro * 442INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
417{ 444{
418 HV *stash; 445 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
437} 464}
438 465
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 471
441/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
442static void 473static void
443get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
444{ 475{
… …
450 else 481 else
451 { 482 {
452#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
459#else 490#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 492#endif
462 } 493 }
463} 494}
464 495
465static void 496static void
… …
487 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
488 c->slot = 0; 519 c->slot = 0;
489 520
490 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
491 522
492 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
496 528
497 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 530 # include "state.h"
499 #undef VAR 531 #undef VAR
500 532
… …
511 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
512 } 544 }
513 545
514 PUTBACK; 546 PUTBACK;
515 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
516} 551}
517 552
518static void 553static void
519save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
520{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
521 { 559 {
522 dSP; 560 dSP;
523 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
580 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
581 619
582 { 620 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 622
585 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
589 628
590 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 630 # include "state.h"
592 #undef VAR 631 #undef VAR
593 } 632 }
594} 633}
595 634
596/* 635/*
597 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
601 */ 640 */
602#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
604#else 643#else
605static void 644static void
606coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
607{ 646{
608 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 711 Safefree (PL_retstack);
673#endif 712#endif
674} 713}
675 714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
676static size_t 724static size_t
677coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
678{ 726{
679 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
680 728
681 if (coro->mainstack) 729 if (coro->mainstack)
682 { 730 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
687 { 732 {
688 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
689 734 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 735 #undef SYM
693 } 736 }
694 else 737 else
695 slot = coro->slot;
696
697 if (slot)
698 { 738 {
699 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 742 }
711 } 743 }
712 744
713 return rss; 745 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 746}
742 747
743/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
744 749
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 836
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 838}
834 839
835static void 840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
837{ 863{
838 /* 864 /*
839 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
840 */ 866 */
… …
842 868
843 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 876 PL_curpm = 0;
848 PL_curpad = 0; 877 PL_curpad = 0;
849 PL_localizing = 0; 878 PL_localizing = 0;
850 PL_dirty = 0; 879 PL_dirty = 0;
851 PL_restartop = 0; 880 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 882 PL_parser = 0;
854#endif 883#endif
884 PL_hints = 0;
855 885
856 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
859 889
860 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
864 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 897
867 { 898 {
868 dSP; 899 dSP;
869 UNOP myop; 900 UNOP myop;
870 901
871 Zero (&myop, 1, UNOP); 902 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
874 906
875 PUSHMARK (SP); 907 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 909 PUTBACK;
878 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 912 }
882 913
883 /* this newly created coroutine might be run on an existing cctx which most 914 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 916 */
887 SSL_HEAD; 917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
888} 930}
889 931
890static void 932static void
891coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
892{ 934{
… …
911 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
916 959
917 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
919 962
920 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
922 967
923 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
924} 969}
925 970
926INLINE void 971INLINE void
… …
936static int 981static int
937runops_trace (pTHX) 982runops_trace (pTHX)
938{ 983{
939 COP *oldcop = 0; 984 COP *oldcop = 0;
940 int oldcxix = -2; 985 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 986
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 988 {
946 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
947 990
948 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
949 { 992 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 994 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 996 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
955 SV **cb; 998 SV **cb;
… …
992 1035
993 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
994 { 1037 {
995 SV **cb; 1038 SV **cb;
996 1039
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1041 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1043
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1045 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1046 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
1007 1049
1008 if (isGV (gv)) 1050 if (isGV (gv))
… …
1013 SAVETMPS; 1055 SAVETMPS;
1014 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1057 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1059 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1061 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1064 SPAGAIN;
1023 FREETMPS; 1065 FREETMPS;
… …
1026 } 1068 }
1027 1069
1028 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
1029 } 1071 }
1030 1072
1031 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1074 {
1033 dSP; 1075 dSP;
1034 1076
1035 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1078 ENTER;
… …
1055 1097
1056 TAINT_NOT; 1098 TAINT_NOT;
1057 return 0; 1099 return 0;
1058} 1100}
1059 1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1060static void 1104static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1106{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1107 ta->prev = 0;
1065} 1108}
1066 1109
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1110static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1112{
1070/* also initialises PL_top_env */ 1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1071static void NOINLINE 1119static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1073{ 1121{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1078 1123
1079 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1081 1126
1082 Zero (&myop, 1, UNOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1131
1086 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1134
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1137}
1095 1138
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1139/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1140INLINE void
1098transfer_tail (pTHX) 1141transfer_tail (pTHX)
1099{ 1142{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1143 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1144}
1116 1145
1117/* 1146/*
1118 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1148 */
… …
1126# endif 1155# endif
1127#endif 1156#endif
1128 { 1157 {
1129 dTHX; 1158 dTHX;
1130 1159
1131 /* we are the alternative tail to pp_set_stacklevel */ 1160 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1161 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
1137 1163
1138 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1140 1166
1141 /* cctx_run is the alternative tail of transfer() */ 1167 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1168 transfer_tail (aTHX);
1143 1169
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1172 perl_run (PL_curinterp);
1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1147 1177
1148 /* 1178 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1179 * If perl-run returns we assume exit() was being called or the coro
1150 * fell off the end, which seems to be the only valid (non-bug) 1180 * fell off the end, which seems to be the only valid (non-bug)
1151 * reason for perl_run to return. We try to exit by jumping to the 1181 * reason for perl_run to return. We try to exit by jumping to the
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * coroutine as Coro has no such concept 1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1154 */ 1186 */
1155 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 } 1189 }
1158} 1190}
… …
1235cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
1236{ 1268{
1237 if (!cctx) 1269 if (!cctx)
1238 return; 1270 return;
1239 1271
1272 assert (cctx != cctx_current);//D temporary
1273
1240 --cctx_count; 1274 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1275 coro_destroy (&cctx->cctx);
1242 1276
1243 /* coro_transfer creates new, empty cctx's */ 1277 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr) 1278 if (cctx->sptr)
… …
1302/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
1303 1337
1304static void 1338static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1307 if (expect_true (prev != next)) 1343 if (expect_true (prev != next))
1308 { 1344 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1311 1347
1312 if (expect_false (next->flags & CF_RUNNING)) 1348 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1314 1350
1315 if (expect_false (next->flags & CF_DESTROYED)) 1351 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1317 1353
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1354#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1357#endif
1322 } 1358 }
1323} 1359}
1324 1360
1325/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
1326static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1364{
1329 dSTACKLEVEL; 1365 dSTACKLEVEL;
1330 1366
1331 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1368 if (expect_false (!prev))
1333 { 1369 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1336 } 1372 }
1337 else if (expect_true (prev != next)) 1373 else if (expect_true (prev != next))
1338 { 1374 {
1339 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
1340 1376
1341 if (expect_false (prev->flags & CF_NEW)) 1377 if (expect_false (prev->flags & CF_NEW))
1342 { 1378 {
1343 /* create a new empty/source context */ 1379 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1347 } 1382 }
1348 1383
1349 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1386
1354 /* first get rid of the old state */ 1387 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1388 save_perl (aTHX_ prev);
1356 1389
1357 if (expect_false (next->flags & CF_NEW)) 1390 if (expect_false (next->flags & CF_NEW))
… …
1362 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1363 } 1396 }
1364 else 1397 else
1365 load_perl (aTHX_ next); 1398 load_perl (aTHX_ next);
1366 1399
1367 prev__cctx = prev->cctx; 1400 assert (!prev->cctx);//D temporary
1368 1401
1369 /* possibly untie and reuse the cctx */ 1402 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1403 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1404 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1405 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1406 && !force_cctx
1374 )) 1407 ))
1375 { 1408 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1378 1411
1379 prev->cctx = 0;
1380
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1415 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1386 1417
1387 cctx_put (prev__cctx); 1418 cctx_put (cctx_current);
1388 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1389 1422
1390 ++next->usecount; 1423 ++next->usecount;
1391 1424
1392 if (expect_true (!next->cctx)) 1425 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1427
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1428 next->cctx = 0;
1396 transfer_next = next;
1397 1429
1398 if (expect_false (prev__cctx != next->cctx)) 1430 if (expect_false (cctx_prev != cctx_current))
1399 { 1431 {
1400 prev__cctx->top_env = PL_top_env; 1432 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1433 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1435 }
1404 1436
1405 transfer_tail (aTHX); 1437 transfer_tail (aTHX);
1406 } 1438 }
1407} 1439}
… …
1414static int 1446static int
1415coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1448{
1417 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1418 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1419 1454
1420 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1421 1456
1422 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1423 { 1458 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1461 --coro_nready;
1428 UNLOCK;
1429 } 1462 }
1430 else 1463 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1465
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1467 {
1435 struct coro temp; 1468 struct coro temp;
1436 1469
1437 if (coro->flags & CF_RUNNING) 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1471
1440 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1442 1474
1443 coro_destruct (aTHX_ coro); 1475 coro_destruct (aTHX_ coro);
… …
1446 1478
1447 coro->slot = 0; 1479 coro->slot = 0;
1448 } 1480 }
1449 1481
1450 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1452 1486
1453 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1456 1490
… …
1494# define MGf_DUP 0 1528# define MGf_DUP 0
1495#endif 1529#endif
1496}; 1530};
1497 1531
1498static void 1532static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1533prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1534{
1501 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1504} 1538}
1505 1539
1506static void 1540static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1542{
1509 dTHX;
1510 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1511 1544
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1546 TRANSFER (ta, 1);
1514} 1547}
1515 1548
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1570}
1571
1516/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1517 1573
1518static void 1574INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1520{ 1576{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1522} 1578}
1523 1579
1524static SV * 1580INLINE SV *
1525coro_deq (pTHX) 1581coro_deq (pTHX)
1526{ 1582{
1527 int prio; 1583 int prio;
1528 1584
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1588
1533 return 0; 1589 return 0;
1534} 1590}
1535 1591
1536static int 1592static int
1537api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1538{ 1594{
1539 dTHX;
1540 struct coro *coro; 1595 struct coro *coro;
1541 SV *sv_hook; 1596 SV *sv_hook;
1542 void (*xs_hook)(void); 1597 void (*xs_hook)(void);
1543 1598
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1548 1600
1549 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1550 return 0; 1602 return 0;
1551 1603
1552 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1553 1605
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1608
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1609 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1610 ++coro_nready;
1561 1611
1562 UNLOCK;
1563
1564 if (sv_hook) 1612 if (sv_hook)
1565 { 1613 {
1566 dSP; 1614 dSP;
1567 1615
1568 ENTER; 1616 ENTER;
1569 SAVETMPS; 1617 SAVETMPS;
1570 1618
1571 PUSHMARK (SP); 1619 PUSHMARK (SP);
1572 PUTBACK; 1620 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1622
1576 FREETMPS; 1623 FREETMPS;
1577 LEAVE; 1624 LEAVE;
1578 } 1625 }
1579 1626
… …
1582 1629
1583 return 1; 1630 return 1;
1584} 1631}
1585 1632
1586static int 1633static int
1587api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1588{ 1635{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1637}
1593 1638
1639/* expects to own a reference to next->hv */
1594INLINE void 1640INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1642{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1643 SV *prev_sv = SvRV (coro_current);
1644
1641 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1642 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1649
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1646 1651
1647 LOCK;
1648 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1650 UNLOCK; 1654}
1655
1656static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{
1659 for (;;)
1660 {
1661 SV *next_sv = coro_deq (aTHX);
1662
1663 if (expect_true (next_sv))
1664 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1670 else
1671 {
1672 next->flags &= ~CF_READY;
1673 --coro_nready;
1674
1675 prepare_schedule_to (aTHX_ ta, next);
1676 break;
1677 }
1678 }
1679 else
1680 {
1681 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle)))
1684 {
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready;
1688 }
1689 else
1690 {
1691 dSP;
1692
1693 ENTER;
1694 SAVETMPS;
1695
1696 PUSHMARK (SP);
1697 PUTBACK;
1698 call_sv (sv_idle, G_VOID | G_DISCARD);
1699
1700 FREETMPS;
1701 LEAVE;
1702 }
1703 }
1704 }
1651} 1705}
1652 1706
1653INLINE void 1707INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1709{
1656 api_ready (coro_current); 1710 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1711 prepare_schedule (aTHX_ ta);
1658} 1712}
1659 1713
1714INLINE void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{
1717 SV *prev = SvRV (coro_current);
1718
1719 if (coro_nready)
1720 {
1721 prepare_schedule (aTHX_ ta);
1722 api_ready (aTHX_ prev);
1723 }
1724 else
1725 prepare_nop (aTHX_ ta);
1726}
1727
1728static void
1729api_schedule (pTHX)
1730{
1731 struct coro_transfer_args ta;
1732
1733 prepare_schedule (aTHX_ &ta);
1734 TRANSFER (ta, 1);
1735}
1736
1737static void
1738api_schedule_to (pTHX_ SV *coro_sv)
1739{
1740 struct coro_transfer_args ta;
1741 struct coro *next = SvSTATE (coro_sv);
1742
1743 SvREFCNT_inc_NN (coro_sv);
1744 prepare_schedule_to (aTHX_ &ta, next);
1745}
1746
1660static int 1747static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1748api_cede (pTHX)
1662{ 1749{
1663 if (coro_nready) 1750 struct coro_transfer_args ta;
1664 { 1751
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 1752 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1668 return 1; 1757 return 1;
1669 } 1758 }
1670 else 1759 else
1671 return 0; 1760 return 0;
1672} 1761}
1673 1762
1674static void
1675api_schedule (void)
1676{
1677 dTHX;
1678 struct transfer_args ta;
1679
1680 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1);
1682}
1683
1684static int 1763static int
1685api_cede (void) 1764api_cede_notself (pTHX)
1686{ 1765{
1687 dTHX; 1766 if (coro_nready)
1767 {
1688 struct transfer_args ta; 1768 struct coro_transfer_args ta;
1689 1769
1690 prepare_cede (aTHX_ &ta); 1770 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 1771 TRANSFER (ta, 1);
1695 return 1; 1772 return 1;
1696 } 1773 }
1697 else 1774 else
1698 return 0; 1775 return 0;
1699} 1776}
1700 1777
1701static int 1778static void
1702api_cede_notself (void)
1703{
1704 dTHX;
1705 struct transfer_args ta;
1706
1707 if (prepare_cede_notself (aTHX_ &ta))
1708 {
1709 TRANSFER (ta, 1);
1710 return 1;
1711 }
1712 else
1713 return 0;
1714}
1715
1716static void
1717api_trace (SV *coro_sv, int flags) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 1780{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv); 1781 struct coro *coro = SvSTATE (coro_sv);
1782
1783 if (coro->flags & CF_RUNNING)
1784 croak ("cannot enable tracing on a running coroutine, caught");
1721 1785
1722 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1723 { 1787 {
1724 if (!coro->cctx) 1788 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 1789 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1728 1792
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 1794 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 1796 {
… …
1737 else 1801 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 1803 }
1740} 1804}
1741 1805
1742#if 0 1806static void
1807coro_call_on_destroy (pTHX_ struct coro *coro)
1808{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811
1812 if (on_destroyp)
1813 {
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815
1816 while (AvFILLp (on_destroy) >= 0)
1817 {
1818 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP);
1822
1823 if (statusp)
1824 {
1825 int i;
1826 AV *status = (AV *)SvRV (*statusp);
1827 EXTEND (SP, AvFILLp (status) + 1);
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 }
1832
1833 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1835 }
1836 }
1837}
1838
1839static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845
1846 av_extend (av, items - 1);
1847 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i]));
1849
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1851
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager);
1854
1855 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat;
1857}
1858
1859/*****************************************************************************/
1860/* async pool handler */
1861
1743static int 1862static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1745{ 1864{
1746 AV *padlist; 1865 HV *hv = (HV *)SvRV (coro_current);
1747 AV *av = (AV *)mg->mg_obj; 1866 struct coro *coro = (struct coro *)frame->data;
1748 1867
1749 abort (); 1868 if (!coro->invoke_cb)
1869 return 1; /* loop till we have invoke */
1870 else
1871 {
1872 hv_store (hv, "desc", sizeof ("desc") - 1,
1873 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1874
1875 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1876
1877 {
1878 dSP;
1879 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1880 PUTBACK;
1881 }
1882
1883 SvREFCNT_dec (GvAV (PL_defgv));
1884 GvAV (PL_defgv) = coro->invoke_av;
1885 coro->invoke_av = 0;
1886
1887 return 0;
1888 }
1889}
1890
1891static void
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{
1894 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896
1897 if (expect_true (coro->saved_deffh))
1898 {
1899 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0;
1902
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1907 coro->invoke_av = newAV ();
1908
1909 frame->prepare = prepare_nop;
1910 }
1911 else
1912 {
1913 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1915
1916 coro->prio = 0;
1917
1918 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1919 api_trace (aTHX_ coro_current, 0);
1920
1921 frame->prepare = prepare_schedule;
1922 av_push (av_async_pool, SvREFCNT_inc (hv));
1923 }
1924 }
1925 else
1926 {
1927 /* first iteration, simply fall through */
1928 frame->prepare = prepare_nop;
1929 }
1930
1931 frame->check = slf_check_pool_handler;
1932 frame->data = (void *)coro;
1933}
1934
1935/*****************************************************************************/
1936/* rouse callback */
1937
1938#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1939
1940static void
1941coro_rouse_callback (pTHX_ CV *cv)
1942{
1943 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG;
1945
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 {
1948 /* first call, set args */
1949 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951
1952 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955
1956 /* better take a full copy of the arguments */
1957 while (items--)
1958 av_store (av, items, newSVsv (ST (items)));
1959 }
1960
1961 XSRETURN_EMPTY;
1962}
1963
1964static int
1965slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1966{
1967 SV *data = (SV *)frame->data;
1968
1969 if (CORO_THROW)
1970 return 0;
1971
1972 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1973 return 1;
1974
1975 /* now push all results on the stack */
1976 {
1977 dSP;
1978 AV *av = (AV *)SvRV (data);
1979 int i;
1980
1981 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984
1985 /* we have stolen the elements, so ste length to zero and free */
1986 AvFILLp (av) = -1;
1987 av_undef (av);
1988
1989 PUTBACK;
1990 }
1750 1991
1751 return 0; 1992 return 0;
1752} 1993}
1753 1994
1754static MGVTBL coro_gensub_vtbl = { 1995static void
1755 0, 0, 0, 0, 1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 1997{
1757}; 1998 SV *cb;
1758#endif 1999
2000 if (items)
2001 cb = arg [0];
2002 else
2003 {
2004 struct coro *coro = SvSTATE_current;
2005
2006 if (!coro->rouse_cb)
2007 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2008
2009 cb = sv_2mortal (coro->rouse_cb);
2010 coro->rouse_cb = 0;
2011 }
2012
2013 if (!SvROK (cb)
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,");
2017
2018 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG;
2021
2022 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait;
2025 }
2026}
2027
2028static SV *
2029coro_new_rouse_cb (pTHX)
2030{
2031 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2035
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */
2038
2039 SvREFCNT_dec (coro->rouse_cb);
2040 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2041
2042 return cb;
2043}
2044
2045/*****************************************************************************/
2046/* schedule-like-function opcode (SLF) */
2047
2048static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2049static const CV *slf_cv;
2050static SV **slf_argv;
2051static int slf_argc, slf_arga; /* count, allocated */
2052static I32 slf_ax; /* top of stack, for restore */
2053
2054/* this restores the stack in the case we patched the entersub, to */
2055/* recreate the stack frame as perl will on following calls */
2056/* since entersub cleared the stack */
2057static OP *
2058pp_restore (pTHX)
2059{
2060 int i;
2061 SV **SP = PL_stack_base + slf_ax;
2062
2063 PUSHMARK (SP);
2064
2065 EXTEND (SP, slf_argc + 1);
2066
2067 for (i = 0; i < slf_argc; ++i)
2068 PUSHs (sv_2mortal (slf_argv [i]));
2069
2070 PUSHs ((SV *)CvGV (slf_cv));
2071
2072 RETURNOP (slf_restore.op_first);
2073}
2074
2075static void
2076slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2077{
2078 SV **arg = (SV **)slf_frame.data;
2079
2080 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2081}
2082
2083static void
2084slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (items != 2)
2087 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2088
2089 frame->prepare = slf_prepare_transfer;
2090 frame->check = slf_check_nop;
2091 frame->data = (void *)arg; /* let's hope it will stay valid */
2092}
2093
2094static void
2095slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 frame->prepare = prepare_schedule;
2098 frame->check = slf_check_nop;
2099}
2100
2101static void
2102slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2103{
2104 struct coro *next = (struct coro *)slf_frame.data;
2105
2106 SvREFCNT_inc_NN (next->hv);
2107 prepare_schedule_to (aTHX_ ta, next);
2108}
2109
2110static void
2111slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 if (!items)
2114 croak ("Coro::schedule_to expects a coroutine argument, caught");
2115
2116 frame->data = (void *)SvSTATE (arg [0]);
2117 frame->prepare = slf_prepare_schedule_to;
2118 frame->check = slf_check_nop;
2119}
2120
2121static void
2122slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2123{
2124 api_ready (aTHX_ SvRV (coro_current));
2125
2126 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2127}
2128
2129static void
2130slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2131{
2132 frame->prepare = prepare_cede;
2133 frame->check = slf_check_nop;
2134}
2135
2136static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{
2139 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop;
2141}
2142
2143/*
2144 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same
2146 * stack offset
2147 * SLF stands for "schedule-like-function".
2148 */
2149static OP *
2150pp_slf (pTHX)
2151{
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153
2154 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare))
2158 {
2159 /* first iteration */
2160 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */
2163 SV *gv = *sp;
2164
2165 /* do a quick consistency check on the "function" object, and if it isn't */
2166 /* for us, divert to the real entersub */
2167 if (SvTYPE (gv) != SVt_PVGV
2168 || !GvCV (gv)
2169 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2170 return PL_ppaddr[OP_ENTERSUB](aTHX);
2171
2172 if (!(PL_op->op_flags & OPf_STACKED))
2173 {
2174 /* ampersand-form of call, use @_ instead of stack */
2175 AV *av = GvAV (PL_defgv);
2176 arg = AvARRAY (av);
2177 items = AvFILLp (av) + 1;
2178 }
2179
2180 /* now call the init function, which needs to set up slf_frame */
2181 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2182 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2183
2184 /* pop args */
2185 SP = PL_stack_base + POPMARK;
2186
2187 PUTBACK;
2188 }
2189
2190 /* now that we have a slf_frame, interpret it! */
2191 /* we use a callback system not to make the code needlessly */
2192 /* complicated, but so we can run multiple perl coros from one cctx */
2193
2194 do
2195 {
2196 struct coro_transfer_args ta;
2197
2198 slf_frame.prepare (aTHX_ &ta);
2199 TRANSFER (ta, 0);
2200
2201 checkmark = PL_stack_sp - PL_stack_base;
2202 }
2203 while (slf_frame.check (aTHX_ &slf_frame));
2204
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206
2207 /* exception handling */
2208 if (expect_false (CORO_THROW))
2209 {
2210 SV *exception = sv_2mortal (CORO_THROW);
2211
2212 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception);
2214 croak (0);
2215 }
2216
2217 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR)
2220 {
2221 dSP;
2222 SV **bot = PL_stack_base + checkmark;
2223
2224 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */
2227 bot [1] = *sp;
2228
2229 SP = bot + 1;
2230
2231 PUTBACK;
2232 }
2233
2234 return NORMAL;
2235}
2236
2237static void
2238api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2239{
2240 int i;
2241 SV **arg = PL_stack_base + ax;
2242 int items = PL_stack_sp - arg + 1;
2243
2244 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2245
2246 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2247 && PL_op->op_ppaddr != pp_slf)
2248 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2249
2250 CvFLAGS (cv) |= CVf_SLF;
2251 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2252 slf_cv = cv;
2253
2254 /* we patch the op, and then re-run the whole call */
2255 /* we have to put the same argument on the stack for this to work */
2256 /* and this will be done by pp_restore */
2257 slf_restore.op_next = (OP *)&slf_restore;
2258 slf_restore.op_type = OP_CUSTOM;
2259 slf_restore.op_ppaddr = pp_restore;
2260 slf_restore.op_first = PL_op;
2261
2262 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2263
2264 if (PL_op->op_flags & OPf_STACKED)
2265 {
2266 if (items > slf_arga)
2267 {
2268 slf_arga = items;
2269 free (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *));
2271 }
2272
2273 slf_argc = items;
2274
2275 for (i = 0; i < items; ++i)
2276 slf_argv [i] = SvREFCNT_inc (arg [i]);
2277 }
2278 else
2279 slf_argc = 0;
2280
2281 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283
2284 PL_op = (OP *)&slf_restore;
2285}
1759 2286
1760/*****************************************************************************/ 2287/*****************************************************************************/
1761/* PerlIO::cede */ 2288/* PerlIO::cede */
1762 2289
1763typedef struct 2290typedef struct
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 2319 double now = nvtime ();
1793 2320
1794 if (now >= self->next) 2321 if (now >= self->next)
1795 { 2322 {
1796 api_cede (); 2323 api_cede (aTHX);
1797 self->next = now + self->every; 2324 self->next = now + self->every;
1798 } 2325 }
1799 2326
1800 return PerlIOBuf_flush (aTHX_ f); 2327 return PerlIOBuf_flush (aTHX_ f);
1801} 2328}
… …
1831 PerlIOBuf_get_cnt, 2358 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 2359 PerlIOBuf_set_ptrcnt,
1833}; 2360};
1834 2361
1835/*****************************************************************************/ 2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
1836 2364
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP * 2365static SV *
1847pp_restore (pTHX) 2366coro_waitarray_new (pTHX_ int count)
1848{ 2367{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV ();
2370 SV **ary;
2371
2372 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary;
2375 /*AvARRAY (av) = ary;*/
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2377 AvMAX (av) = 1;
2378 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count);
2380
2381 return newRV_noinc ((SV *)av);
2382}
2383
2384/* semaphore */
2385
2386static void
2387coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2388{
2389 SV *count_sv = AvARRAY (av)[0];
2390 IV count = SvIVX (count_sv);
2391
2392 count += adjust;
2393 SvIVX (count_sv) = count;
2394
2395 /* now wake up as many waiters as are expected to lock */
2396 while (count > 0 && AvFILLp (av) > 0)
2397 {
2398 SV *cb;
2399
2400 /* swap first two elements so we can shift a waiter */
2401 AvARRAY (av)[0] = AvARRAY (av)[1];
2402 AvARRAY (av)[1] = count_sv;
2403 cb = av_shift (av);
2404
2405 if (SvOBJECT (cb))
2406 {
2407 api_ready (aTHX_ cb);
2408 --count;
2409 }
2410 else if (SvTYPE (cb) == SVt_PVCV)
2411 {
2412 dSP;
2413 PUSHMARK (SP);
2414 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2415 PUTBACK;
2416 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2417 }
2418
2419 SvREFCNT_dec (cb);
2420 }
2421}
2422
2423static void
2424coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2425{
2426 /* call $sem->adjust (0) to possibly wake up some other waiters */
2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2428}
2429
2430static int
2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2432{
2433 AV *av = (AV *)frame->data;
2434 SV *count_sv = AvARRAY (av)[0];
2435
2436 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW)
2438 return 0;
2439 else if (SvIVX (count_sv) > 0)
2440 {
2441 SvSTATE_current->on_destroy = 0;
2442
2443 if (acquire)
2444 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else
2446 coro_semaphore_adjust (aTHX_ av, 0);
2447
2448 return 0;
2449 }
2450 else
2451 {
2452 int i;
2453 /* if we were woken up but can't down, we look through the whole */
2454 /* waiters list and only add us if we aren't in there already */
2455 /* this avoids some degenerate memory usage cases */
2456
2457 for (i = 1; i <= AvFILLp (av); ++i)
2458 if (AvARRAY (av)[i] == SvRV (coro_current))
2459 return 1;
2460
2461 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2462 return 1;
2463 }
2464}
2465
2466static int
2467slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2468{
2469 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2470}
2471
2472static int
2473slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2474{
2475 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2476}
2477
2478static void
2479slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 AV *av = (AV *)SvRV (arg [0]);
2482
2483 if (SvIVX (AvARRAY (av)[0]) > 0)
2484 {
2485 frame->data = (void *)av;
2486 frame->prepare = prepare_nop;
2487 }
2488 else
2489 {
2490 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2491
2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2493 frame->prepare = prepare_schedule;
2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2498 }
2499}
2500
2501static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2503{
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_down;
2506}
2507
2508static void
2509slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2510{
2511 if (items >= 2)
2512 {
2513 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2516
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2518
2519 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0);
2521
2522 frame->prepare = prepare_nop;
2523 frame->check = slf_check_nop;
2524 }
2525 else
2526 {
2527 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2528 frame->check = slf_check_semaphore_wait;
2529 }
2530}
2531
2532/* signal */
2533
2534static void
2535coro_signal_wake (pTHX_ AV *av, int count)
2536{
2537 SvIVX (AvARRAY (av)[0]) = 0;
2538
2539 /* now signal count waiters */
2540 while (count > 0 && AvFILLp (av) > 0)
2541 {
2542 SV *cb;
2543
2544 /* swap first two elements so we can shift a waiter */
2545 cb = AvARRAY (av)[0];
2546 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb;
2548
2549 cb = av_shift (av);
2550
2551 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */
2553 SvREFCNT_dec (cb);
2554
2555 --count;
2556 }
2557}
2558
2559static int
2560slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2561{
2562 /* if we are about to throw, also stop waiting */
2563 return SvROK ((SV *)frame->data) && !CORO_THROW;
2564}
2565
2566static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{
2569 AV *av = (AV *)SvRV (arg [0]);
2570
2571 if (SvIVX (AvARRAY (av)[0]))
2572 {
2573 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop;
2576 }
2577 else
2578 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2580
2581 av_push (av, waiter);
2582
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule;
2585 frame->check = slf_check_signal_wait;
2586 }
2587}
2588
2589/*****************************************************************************/
2590/* Coro::AIO */
2591
2592#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2593
2594/* helper storage struct */
2595struct io_state
2596{
2597 int errorno;
2598 I32 laststype; /* U16 in 5.10.0 */
2599 int laststatval;
2600 Stat_t statcache;
2601};
2602
2603static void
2604coro_aio_callback (pTHX_ CV *cv)
2605{
2606 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG;
2608 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state));
2610
2611 av_extend (state, items - 1);
2612
2613 sv_upgrade (data_sv, SVt_PV);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616
2617 {
2618 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2619
2620 data->errorno = errno;
2621 data->laststype = PL_laststype;
2622 data->laststatval = PL_laststatval;
2623 data->statcache = PL_statcache;
2624 }
2625
2626 /* now build the result vector out of all the parameters and the data_sv */
2627 {
2628 int i;
2629
2630 for (i = 0; i < items; ++i)
2631 av_push (state, SvREFCNT_inc_NN (ST (i)));
2632 }
2633
2634 av_push (state, data_sv);
2635
2636 api_ready (aTHX_ coro);
2637 SvREFCNT_dec (coro);
2638 SvREFCNT_dec ((AV *)state);
2639}
2640
2641static int
2642slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2643{
2644 AV *state = (AV *)frame->data;
2645
2646 /* if we are about to throw, return early */
2647 /* this does not cancel the aio request, but at least */
2648 /* it quickly returns */
2649 if (CORO_THROW)
2650 return 0;
2651
2652 /* one element that is an RV? repeat! */
2653 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2654 return 1;
2655
2656 /* restore status */
2657 {
2658 SV *data_sv = av_pop (state);
2659 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2660
2661 errno = data->errorno;
2662 PL_laststype = data->laststype;
2663 PL_laststatval = data->laststatval;
2664 PL_statcache = data->statcache;
2665
2666 SvREFCNT_dec (data_sv);
2667 }
2668
2669 /* push result values */
2670 {
1849 dSP; 2671 dSP;
2672 int i;
1850 2673
2674 EXTEND (SP, AvFILLp (state) + 1);
2675 for (i = 0; i <= AvFILLp (state); ++i)
2676 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2677
2678 PUTBACK;
2679 }
2680
2681 return 0;
2682}
2683
2684static void
2685slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2688 SV *coro_hv = SvRV (coro_current);
2689 struct coro *coro = SvSTATE_hv (coro_hv);
2690
2691 /* put our coroutine id on the state arg */
2692 av_push (state, SvREFCNT_inc_NN (coro_hv));
2693
2694 /* first see whether we have a non-zero priority and set it as AIO prio */
2695 if (coro->prio)
2696 {
2697 dSP;
2698
2699 static SV *prio_cv;
2700 static SV *prio_sv;
2701
2702 if (expect_false (!prio_cv))
2703 {
2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2705 prio_sv = newSViv (0);
2706 }
2707
2708 PUSHMARK (SP);
2709 sv_setiv (prio_sv, coro->prio);
2710 XPUSHs (prio_sv);
2711
2712 PUTBACK;
2713 call_sv (prio_cv, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now call the original request */
2717 {
2718 dSP;
2719 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2720 int i;
2721
1851 PUSHMARK (SP); 2722 PUSHMARK (SP);
1852 2723
1853 EXTEND (SP, 3); 2724 /* first push all args to the stack */
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2725 EXTEND (SP, items + 1);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 2726
1858 RETURNOP (ssl_restore.op_first); 2727 for (i = 0; i < items; ++i)
1859} 2728 PUSHs (arg [i]);
1860 2729
1861/* declare prototype */ 2730 /* now push the callback closure */
1862XS(XS_Coro__State__set_stacklevel); 2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2732
1864#define OPpENTERSUB_SSL 15 2733 /* now call the AIO function - we assume our request is uncancelable */
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK; 2734 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 } 2736 }
1918 2737
1919 TRANSFER (ta, 0); 2738 /* now that the requets is going, we loop toll we have a result */
1920 SPAGAIN; 2739 frame->data = (void *)state;
1921 2740 frame->prepare = prepare_schedule;
1922skip: 2741 frame->check = slf_check_aio_req;
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 2742}
2743
2744static void
2745coro_aio_req_xs (pTHX_ CV *cv)
2746{
2747 dXSARGS;
2748
2749 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2750
2751 XSRETURN_EMPTY;
2752}
2753
2754/*****************************************************************************/
2755
2756#if CORO_CLONE
2757# include "clone.c"
2758#endif
1928 2759
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 2761
1931PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
1932 2763
1933# these not obviously related functions are all rolled into the same xs
1934# function to increase chances that they all will call transfer with the same
1935# stack offset
1936void
1937_set_stacklevel (...)
1938 ALIAS:
1939 Coro::State::transfer = 1
1940 Coro::schedule = 2
1941 Coro::cede = 3
1942 Coro::cede_notself = 4
1943 CODE:
1944{
1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT: 2764BOOT:
1967{ 2765{
1968#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 2767# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 2768 coro_thx = PERL_GET_CONTEXT;
1972# endif 2769# endif
1973#endif 2770#endif
1974 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
2772
2773 cctx_current = cctx_new_empty ();
1975 2774
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978 2777
1979 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2778 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1995 main_top_env = PL_top_env; 2794 main_top_env = PL_top_env;
1996 2795
1997 while (main_top_env->je_prev) 2796 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 2797 main_top_env = main_top_env->je_prev;
1999 2798
2799 {
2800 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2801
2802 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2803 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2804
2805 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2806 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2807 }
2808
2000 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION; 2810 coroapi.rev = CORO_API_REVISION;
2811
2002 coroapi.transfer = api_transfer; 2812 coroapi.transfer = api_transfer;
2813
2814 coroapi.sv_state = SvSTATE_;
2815 coroapi.execute_slf = api_execute_slf;
2816 coroapi.prepare_nop = prepare_nop;
2817 coroapi.prepare_schedule = prepare_schedule;
2818 coroapi.prepare_cede = prepare_cede;
2819 coroapi.prepare_cede_notself = prepare_cede_notself;
2003 2820
2004 { 2821 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006 2823
2007 if (!svp) croak ("Time::HiRes is required"); 2824 if (!svp) croak ("Time::HiRes is required");
… …
2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2014} 2831}
2015 2832
2016SV * 2833SV *
2017new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
2018 CODE: 2837 CODE:
2019{ 2838{
2020 struct coro *coro; 2839 struct coro *coro;
2021 MAGIC *mg; 2840 MAGIC *mg;
2022 HV *hv; 2841 HV *hv;
2842 CV *cb;
2023 int i; 2843 int i;
2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
2024 2858
2025 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV (); 2860 coro->args = newAV ();
2027 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
2028 2862
… …
2033 coro->hv = hv = newHV (); 2867 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP; 2869 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037 2871
2872 if (items > 1)
2873 {
2038 av_extend (coro->args, items - 1); 2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
2039 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
2041} 2887}
2042 OUTPUT: 2888 OUTPUT:
2043 RETVAL 2889 RETVAL
2890
2891void
2892transfer (...)
2893 PROTOTYPE: $$
2894 CODE:
2895 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2044 2896
2045bool 2897bool
2046_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
2047 CODE: 2899 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2053_exit (int code) 2905_exit (int code)
2054 PROTOTYPE: $ 2906 PROTOTYPE: $
2055 CODE: 2907 CODE:
2056 _exit (code); 2908 _exit (code);
2057 2909
2910SV *
2911clone (Coro::State coro)
2912 CODE:
2913{
2914#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro);
2916 MAGIC *mg;
2917 /* TODO: too much duplication */
2918 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP;
2921 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2922#else
2923 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2924#endif
2925}
2926 OUTPUT:
2927 RETVAL
2928
2058int 2929int
2059cctx_stacksize (int new_stacksize = 0) 2930cctx_stacksize (int new_stacksize = 0)
2931 PROTOTYPE: ;$
2060 CODE: 2932 CODE:
2061 RETVAL = cctx_stacksize; 2933 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 2934 if (new_stacksize)
2063 { 2935 {
2064 cctx_stacksize = new_stacksize; 2936 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 2939 OUTPUT:
2068 RETVAL 2940 RETVAL
2069 2941
2070int 2942int
2071cctx_max_idle (int max_idle = 0) 2943cctx_max_idle (int max_idle = 0)
2944 PROTOTYPE: ;$
2072 CODE: 2945 CODE:
2073 RETVAL = cctx_max_idle; 2946 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 2947 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 2948 cctx_max_idle = max_idle;
2076 OUTPUT: 2949 OUTPUT:
2077 RETVAL 2950 RETVAL
2078 2951
2079int 2952int
2080cctx_count () 2953cctx_count ()
2954 PROTOTYPE:
2081 CODE: 2955 CODE:
2082 RETVAL = cctx_count; 2956 RETVAL = cctx_count;
2083 OUTPUT: 2957 OUTPUT:
2084 RETVAL 2958 RETVAL
2085 2959
2086int 2960int
2087cctx_idle () 2961cctx_idle ()
2962 PROTOTYPE:
2088 CODE: 2963 CODE:
2089 RETVAL = cctx_idle; 2964 RETVAL = cctx_idle;
2090 OUTPUT: 2965 OUTPUT:
2091 RETVAL 2966 RETVAL
2092 2967
2093void 2968void
2094list () 2969list ()
2970 PROTOTYPE:
2095 PPCODE: 2971 PPCODE:
2096{ 2972{
2097 struct coro *coro; 2973 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 2974 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 2975 if (coro->hv)
… …
2161 3037
2162void 3038void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 3039throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$ 3040 PROTOTYPE: $;$
2165 CODE: 3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
2166 SvREFCNT_dec (self->throw); 3045 SvREFCNT_dec (*throwp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
2168 3048
2169void 3049void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3051 PROTOTYPE: $;$
3052 C_ARGS: aTHX_ coro, flags
2171 3053
2172SV * 3054SV *
2173has_cctx (Coro::State coro) 3055has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 3056 PROTOTYPE: $
2175 CODE: 3057 CODE:
2176 RETVAL = boolSV (!!coro->cctx); 3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2177 OUTPUT: 3060 OUTPUT:
2178 RETVAL 3061 RETVAL
2179 3062
2180int 3063int
2181is_traced (Coro::State coro) 3064is_traced (Coro::State coro)
… …
2199 OUTPUT: 3082 OUTPUT:
2200 RETVAL 3083 RETVAL
2201 3084
2202void 3085void
2203force_cctx () 3086force_cctx ()
3087 PROTOTYPE:
2204 CODE: 3088 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 3089 cctx_current->idle_sp = 0;
2207 3090
2208void 3091void
2209swap_defsv (Coro::State self) 3092swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 3093 PROTOTYPE: $
2211 ALIAS: 3094 ALIAS:
2212 swap_defav = 1 3095 swap_defav = 1
2213 CODE: 3096 CODE:
2214 if (!self->slot) 3097 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 3098 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 3099 else
2217 { 3100 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3101 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 3103
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 3104 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 3105 }
2223 3106
3107
2224MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
2225 3109
2226BOOT: 3110BOOT:
2227{ 3111{
2228 int i; 3112 int i;
2229 3113
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2235 SvREADONLY_on (coro_current); 3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3123
3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2236 3128
2237 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
2238 3130
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2248 3140
2249 { 3141 {
2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2251 3143
2252 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
3145 coroapi.schedule_to = api_schedule_to;
2253 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 3150 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
2259 3152
2260 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
2263 } 3156 }
2264} 3157}
3158
3159void
3160terminate (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163
3164void
3165schedule (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168
3169void
3170schedule_to (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3173
3174void
3175cede_to (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3178
3179void
3180cede (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_cede);
3183
3184void
3185cede_notself (...)
3186 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
2265 3194
2266void 3195void
2267_set_current (SV *current) 3196_set_current (SV *current)
2268 PROTOTYPE: $ 3197 PROTOTYPE: $
2269 CODE: 3198 CODE:
… …
2272 3201
2273void 3202void
2274_set_readyhook (SV *hook) 3203_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 3204 PROTOTYPE: $
2276 CODE: 3205 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 3206 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281 3208
2282int 3209int
2283prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$
2284 ALIAS: 3212 ALIAS:
2285 nice = 1 3213 nice = 1
2286 CODE: 3214 CODE:
2287{ 3215{
2288 RETVAL = coro->prio; 3216 RETVAL = coro->prio;
… …
2303 3231
2304SV * 3232SV *
2305ready (SV *self) 3233ready (SV *self)
2306 PROTOTYPE: $ 3234 PROTOTYPE: $
2307 CODE: 3235 CODE:
2308 RETVAL = boolSV (api_ready (self)); 3236 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 3237 OUTPUT:
2310 RETVAL 3238 RETVAL
2311 3239
2312int 3240int
2313nready (...) 3241nready (...)
… …
2315 CODE: 3243 CODE:
2316 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
2317 OUTPUT: 3245 OUTPUT:
2318 RETVAL 3246 RETVAL
2319 3247
2320# for async_pool speedup
2321void 3248void
2322_pool_1 (SV *cb) 3249_pool_handler (...)
2323 CODE: 3250 CODE:
2324{ 3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current);
2327 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av;
2330 int i, len;
2331 3252
2332 if (!invoke) 3253void
3254async_pool (SV *cv, ...)
3255 PROTOTYPE: &@
3256 PPCODE:
3257{
3258 HV *hv = (HV *)av_pop (av_async_pool);
3259 AV *av = newAV ();
3260 SV *cb = ST (0);
3261 int i;
3262
3263 av_extend (av, items - 2);
3264 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i)));
3266
3267 if ((SV *)hv == &PL_sv_undef)
2333 { 3268 {
2334 SV *old = PL_diehook; 3269 PUSHMARK (SP);
2335 PL_diehook = 0; 3270 EXTEND (SP, 2);
2336 SvREFCNT_dec (old); 3271 PUSHs (sv_Coro);
2337 croak ("\3async_pool terminate\2\n"); 3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2338 } 3278 }
2339 3279
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2342
2343 hv_store (hv, "desc", sizeof ("desc") - 1,
2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2345
2346 invoke_av = (AV *)SvRV (invoke);
2347 len = av_len (invoke_av);
2348
2349 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2350
2351 if (len > 0)
2352 { 3280 {
2353 av_fill (defav, len - 1); 3281 struct coro *coro = SvSTATE_hv (hv);
2354 for (i = 0; i < len; ++i) 3282
2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3283 assert (!coro->invoke_cb);
3284 assert (!coro->invoke_av);
3285 coro->invoke_cb = SvREFCNT_inc (cb);
3286 coro->invoke_av = av;
2356 } 3287 }
2357 3288
3289 api_ready (aTHX_ (SV *)hv);
3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
2358 SvREFCNT_dec (invoke); 3294 SvREFCNT_dec (hv);
2359} 3295}
2360 3296
2361void 3297SV *
2362_pool_2 (SV *cb) 3298rouse_cb ()
3299 PROTOTYPE:
2363 CODE: 3300 CODE:
2364{ 3301 RETVAL = coro_new_rouse_cb (aTHX);
2365 struct coro *coro = SvSTATE (coro_current);
2366
2367 sv_setsv (cb, &PL_sv_undef);
2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n");
2379 }
2380
2381 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384
2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
2390 av_push (av_async_pool, newSVsv (coro_current));
2391}
2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT: 3302 OUTPUT:
2437 RETVAL 3303 RETVAL
2438 3304
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 3305void
2445_get_state (SV *self) 3306rouse_wait (...)
3307 PROTOTYPE: ;$
2446 PPCODE: 3308 PPCODE:
2447{ 3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2448 AV *defav = GvAV (PL_defgv);
2449 AV *av = newAV ();
2450 int i;
2451 SV *data_sv = newSV (sizeof (struct io_state));
2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2453 SvCUR_set (data_sv, sizeof (struct io_state));
2454 SvPOK_only (data_sv);
2455 3310
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460 3311
2461 av_extend (av, AvFILLp (defav) + 1 + 1); 3312MODULE = Coro::State PACKAGE = PerlIO::cede
2462 3313
2463 for (i = 0; i <= AvFILLp (defav); ++i) 3314BOOT:
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2465 3316
2466 av_push (av, data_sv);
2467 3317
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3318MODULE = Coro::State PACKAGE = Coro::Semaphore
2469 3319
2470 api_ready (self); 3320SV *
2471} 3321new (SV *klass, SV *count = 0)
3322 CODE:
3323 RETVAL = sv_bless (
3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3325 GvSTASH (CvGV (cv))
3326 );
3327 OUTPUT:
3328 RETVAL
3329
3330# helper for Coro::Channel
3331SV *
3332_alloc (int count)
3333 CODE:
3334 RETVAL = coro_waitarray_new (aTHX_ count);
3335 OUTPUT:
3336 RETVAL
3337
3338SV *
3339count (SV *self)
3340 CODE:
3341 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3342 OUTPUT:
3343 RETVAL
2472 3344
2473void 3345void
2474_set_state (SV *state) 3346up (SV *self, int adjust = 1)
2475 PROTOTYPE: $ 3347 ALIAS:
3348 adjust = 1
3349 CODE:
3350 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3351
3352void
3353down (...)
3354 CODE:
3355 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3356
3357void
3358wait (...)
3359 CODE:
3360 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3361
3362void
3363try (SV *self)
3364 PPCODE:
3365{
3366 AV *av = (AV *)SvRV (self);
3367 SV *count_sv = AvARRAY (av)[0];
3368 IV count = SvIVX (count_sv);
3369
3370 if (count > 0)
3371 {
3372 --count;
3373 SvIVX (count_sv) = count;
3374 XSRETURN_YES;
3375 }
3376 else
3377 XSRETURN_NO;
3378}
3379
3380void
3381waiters (SV *self)
3382 PPCODE:
3383{
3384 AV *av = (AV *)SvRV (self);
3385 int wcount = AvFILLp (av) + 1 - 1;
3386
3387 if (GIMME_V == G_SCALAR)
3388 XPUSHs (sv_2mortal (newSViv (wcount)));
3389 else
3390 {
3391 int i;
3392 EXTEND (SP, wcount);
3393 for (i = 1; i <= wcount; ++i)
3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3395 }
3396}
3397
3398MODULE = Coro::State PACKAGE = Coro::Signal
3399
3400SV *
3401new (SV *klass)
2476 PPCODE: 3402 CODE:
3403 RETVAL = sv_bless (
3404 coro_waitarray_new (aTHX_ 0),
3405 GvSTASH (CvGV (cv))
3406 );
3407 OUTPUT:
3408 RETVAL
3409
3410void
3411wait (...)
3412 CODE:
3413 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3414
3415void
3416broadcast (SV *self)
3417 CODE:
2477{ 3418{
2478 AV *av = (AV *)SvRV (state); 3419 AV *av = (AV *)SvRV (self);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
2480 int i; 3421}
2481 3422
2482 errno = data->errorno; 3423void
2483 PL_laststype = data->laststype; 3424send (SV *self)
2484 PL_laststatval = data->laststatval; 3425 CODE:
2485 PL_statcache = data->statcache; 3426{
3427 AV *av = (AV *)SvRV (self);
2486 3428
2487 EXTEND (SP, AvFILLp (av)); 3429 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 3430 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
2491 3441
2492 3442
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 3444
2495BOOT: 3445BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 3447
2498SV * 3448void
2499_schedule (...) 3449_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 3450 CODE:
2502{ 3451{
2503 static int incede; 3452 static int incede;
2504 3453
2505 api_cede_notself (); 3454 api_cede_notself (aTHX);
2506 3455
2507 ++incede; 3456 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 3457 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 3458 ;
2510 3459
2511 sv_setsv (sv_activity, &PL_sv_undef); 3460 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 3461 if (coro_nready >= incede)
2513 { 3462 {
2514 PUSHMARK (SP); 3463 PUSHMARK (SP);
2515 PUTBACK; 3464 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 3466 }
2519 3467
2520 --incede; 3468 --incede;
2521} 3469}
2522 3470
2523 3471
2524MODULE = Coro::State PACKAGE = PerlIO::cede 3472MODULE = Coro::State PACKAGE = Coro::AIO
2525 3473
2526BOOT: 3474void
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3475_register (char *target, char *proto, SV *req)
3476 CODE:
3477{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req);
3479 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483}
2528 3484

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