ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 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 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 746}
734 747
735/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
736 749
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
823 836
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 838}
826 839
827static 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 */
828coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
829{ 863{
830 /* 864 /*
831 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
832 */ 866 */
… …
834 868
835 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 876 PL_curpm = 0;
840 PL_curpad = 0; 877 PL_curpad = 0;
841 PL_localizing = 0; 878 PL_localizing = 0;
842 PL_dirty = 0; 879 PL_dirty = 0;
843 PL_restartop = 0; 880 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 882 PL_parser = 0;
846#endif 883#endif
884 PL_hints = 0;
847 885
848 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
849 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 );
850 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);
851 889
852 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
855 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;
856 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 897
859 { 898 {
860 dSP; 899 dSP;
861 UNOP myop; 900 UNOP myop;
862 901
863 Zero (&myop, 1, UNOP); 902 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
866 906
867 PUSHMARK (SP); 907 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 909 PUTBACK;
870 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 912 }
874 913
875 /* 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
876 * 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.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 916 */
879 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;
880} 930}
881 931
882static void 932static void
883coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
884{ 934{
… …
903 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
908 959
909 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
911 962
912 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
914 967
915 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
916} 969}
917 970
918INLINE void 971INLINE void
… …
928static int 981static int
929runops_trace (pTHX) 982runops_trace (pTHX)
930{ 983{
931 COP *oldcop = 0; 984 COP *oldcop = 0;
932 int oldcxix = -2; 985 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 986
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 988 {
938 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
939 990
940 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
941 { 992 {
942 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)
943 { 994 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 996 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
947 SV **cb; 998 SV **cb;
… …
984 1035
985 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
986 { 1037 {
987 SV **cb; 1038 SV **cb;
988 1039
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1041 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1043
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1045 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1046 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
999 1049
1000 if (isGV (gv)) 1050 if (isGV (gv))
… …
1005 SAVETMPS; 1055 SAVETMPS;
1006 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1057 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1059 PUSHs (fullname);
1010 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);
1011 PUTBACK; 1061 PUTBACK;
1012 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);
1013 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);
1014 SPAGAIN; 1064 SPAGAIN;
1015 FREETMPS; 1065 FREETMPS;
… …
1018 } 1068 }
1019 1069
1020 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
1021 } 1071 }
1022 1072
1023 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1074 {
1025 dSP; 1075 dSP;
1026 1076
1027 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1078 ENTER;
… …
1047 1097
1048 TAINT_NOT; 1098 TAINT_NOT;
1049 return 0; 1099 return 0;
1050} 1100}
1051 1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1052static void 1104static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1106{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1107 ta->prev = 0;
1057} 1108}
1058 1109
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1110static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1112{
1062/* 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 */
1063static void NOINLINE 1119static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1065{ 1121{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1070 1123
1071 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1073 1126
1074 Zero (&myop, 1, UNOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1076 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));
1077 1131
1078 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1134
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1137}
1087 1138
1088/* 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 */
1089INLINE void 1140INLINE void
1090transfer_tail (pTHX) 1141transfer_tail (pTHX)
1091{ 1142{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1143 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1144}
1108 1145
1109/* 1146/*
1110 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1148 */
… …
1118# endif 1155# endif
1119#endif 1156#endif
1120 { 1157 {
1121 dTHX; 1158 dTHX;
1122 1159
1123 /* we are the alternative tail to pp_set_stacklevel */ 1160 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1161 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
1129 1163
1130 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1132 1166
1133 /* cctx_run is the alternative tail of transfer() */ 1167 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1168 transfer_tail (aTHX);
1135 1169
1136 /* 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 */
1137 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1138 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 */
1139 1177
1140 /* 1178 /*
1141 * 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
1142 * 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)
1143 * 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
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * 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.
1146 */ 1186 */
1147 PL_top_env = main_top_env; 1187 PL_top_env = main_top_env;
1148 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 */
1149 } 1189 }
1150} 1190}
… …
1227cctx_destroy (coro_cctx *cctx) 1267cctx_destroy (coro_cctx *cctx)
1228{ 1268{
1229 if (!cctx) 1269 if (!cctx)
1230 return; 1270 return;
1231 1271
1272 assert (cctx != cctx_current);//D temporary
1273
1232 --cctx_count; 1274 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1275 coro_destroy (&cctx->cctx);
1234 1276
1235 /* coro_transfer creates new, empty cctx's */ 1277 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1278 if (cctx->sptr)
… …
1294/** coroutine switching *****************************************************/ 1336/** coroutine switching *****************************************************/
1295 1337
1296static void 1338static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1339transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1340{
1341 /* TODO: throwing up here is considered harmful */
1342
1299 if (expect_true (prev != next)) 1343 if (expect_true (prev != next))
1300 { 1344 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1303 1347
1304 if (expect_false (next->flags & CF_RUNNING)) 1348 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306 1350
1307 if (expect_false (next->flags & CF_DESTROYED)) 1351 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1309 1353
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1354#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1355 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1357#endif
1314 } 1358 }
1315} 1359}
1316 1360
1317/* always use the TRANSFER macro */ 1361/* always use the TRANSFER macro */
1318static void NOINLINE 1362static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1364{
1321 dSTACKLEVEL; 1365 dSTACKLEVEL;
1322 1366
1323 /* sometimes transfer is only called to set idle_sp */ 1367 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1368 if (expect_false (!prev))
1325 { 1369 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1370 cctx_current->idle_sp = STACKLEVEL;
1327 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 */
1328 } 1372 }
1329 else if (expect_true (prev != next)) 1373 else if (expect_true (prev != next))
1330 { 1374 {
1331 coro_cctx *prev__cctx; 1375 coro_cctx *cctx_prev;
1332 1376
1333 if (expect_false (prev->flags & CF_NEW)) 1377 if (expect_false (prev->flags & CF_NEW))
1334 { 1378 {
1335 /* create a new empty/source context */ 1379 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1380 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1381 prev->flags |= CF_RUNNING;
1339 } 1382 }
1340 1383
1341 prev->flags &= ~CF_RUNNING; 1384 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1385 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1386
1346 /* first get rid of the old state */ 1387 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1388 save_perl (aTHX_ prev);
1348 1389
1349 if (expect_false (next->flags & CF_NEW)) 1390 if (expect_false (next->flags & CF_NEW))
… …
1354 coro_setup (aTHX_ next); 1395 coro_setup (aTHX_ next);
1355 } 1396 }
1356 else 1397 else
1357 load_perl (aTHX_ next); 1398 load_perl (aTHX_ next);
1358 1399
1359 prev__cctx = prev->cctx; 1400 assert (!prev->cctx);//D temporary
1360 1401
1361 /* possibly untie and reuse the cctx */ 1402 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1403 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1404 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1405 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1406 && !force_cctx
1366 )) 1407 ))
1367 { 1408 {
1368 /* 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 */
1369 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));
1370 1411
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1413 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1414 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1415 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1378 1417
1379 cctx_put (prev__cctx); 1418 cctx_put (cctx_current);
1380 } 1419 }
1420 else
1421 prev->cctx = cctx_current;
1381 1422
1382 ++next->usecount; 1423 ++next->usecount;
1383 1424
1384 if (expect_true (!next->cctx)) 1425 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1427
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1428 next->cctx = 0;
1388 transfer_next = next;
1389 1429
1390 if (expect_false (prev__cctx != next->cctx)) 1430 if (expect_false (cctx_prev != cctx_current))
1391 { 1431 {
1392 prev__cctx->top_env = PL_top_env; 1432 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1433 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1435 }
1396 1436
1397 transfer_tail (aTHX); 1437 transfer_tail (aTHX);
1398 } 1438 }
1399} 1439}
… …
1406static int 1446static int
1407coro_state_destroy (pTHX_ struct coro *coro) 1447coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1448{
1409 if (coro->flags & CF_DESTROYED) 1449 if (coro->flags & CF_DESTROYED)
1410 return 0; 1450 return 0;
1451
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro);
1411 1454
1412 coro->flags |= CF_DESTROYED; 1455 coro->flags |= CF_DESTROYED;
1413 1456
1414 if (coro->flags & CF_READY) 1457 if (coro->flags & CF_READY)
1415 { 1458 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1459 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1460 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1461 --coro_nready;
1420 UNLOCK;
1421 } 1462 }
1422 else 1463 else
1423 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 */
1424 1465
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1466 if (coro->mainstack && coro->mainstack != main_mainstack)
1426 { 1467 {
1427 struct coro temp; 1468 struct coro temp;
1428 1469
1429 if (coro->flags & CF_RUNNING) 1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1471
1432 save_perl (aTHX_ &temp); 1472 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro); 1473 load_perl (aTHX_ coro);
1434 1474
1435 coro_destruct (aTHX_ coro); 1475 coro_destruct (aTHX_ coro);
… …
1438 1478
1439 coro->slot = 0; 1479 coro->slot = 0;
1440 } 1480 }
1441 1481
1442 cctx_destroy (coro->cctx); 1482 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv);
1443 SvREFCNT_dec (coro->args); 1484 SvREFCNT_dec (coro->args);
1485 SvREFCNT_dec (CORO_THROW);
1444 1486
1445 if (coro->next) coro->next->prev = coro->prev; 1487 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1488 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1489 if (coro == coro_first) coro_first = coro->next;
1448 1490
… …
1486# define MGf_DUP 0 1528# define MGf_DUP 0
1487#endif 1529#endif
1488}; 1530};
1489 1531
1490static void 1532static void
1491prepare_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)
1492{ 1534{
1493 ta->prev = SvSTATE (prev_sv); 1535 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1536 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1537 TRANSFER_CHECK (*ta);
1496} 1538}
1497 1539
1498static void 1540static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1541api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1542{
1501 dTHX;
1502 struct transfer_args ta; 1543 struct coro_transfer_args ta;
1503 1544
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1546 TRANSFER (ta, 1);
1506} 1547}
1507 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
1508/** Coro ********************************************************************/ 1572/** Coro ********************************************************************/
1509 1573
1510static void 1574INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1575coro_enq (pTHX_ struct coro *coro)
1512{ 1576{
1513 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));
1514} 1578}
1515 1579
1516static SV * 1580INLINE SV *
1517coro_deq (pTHX) 1581coro_deq (pTHX)
1518{ 1582{
1519 int prio; 1583 int prio;
1520 1584
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 1588
1525 return 0; 1589 return 0;
1526} 1590}
1527 1591
1528static int 1592static int
1529api_ready (SV *coro_sv) 1593api_ready (pTHX_ SV *coro_sv)
1530{ 1594{
1531 dTHX;
1532 struct coro *coro; 1595 struct coro *coro;
1533 SV *sv_hook; 1596 SV *sv_hook;
1534 void (*xs_hook)(void); 1597 void (*xs_hook)(void);
1535 1598
1536 if (SvROK (coro_sv))
1537 coro_sv = SvRV (coro_sv);
1538
1539 coro = SvSTATE (coro_sv); 1599 coro = SvSTATE (coro_sv);
1540 1600
1541 if (coro->flags & CF_READY) 1601 if (coro->flags & CF_READY)
1542 return 0; 1602 return 0;
1543 1603
1544 coro->flags |= CF_READY; 1604 coro->flags |= CF_READY;
1545 1605
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1608
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1609 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1610 ++coro_nready;
1553 1611
1554 UNLOCK;
1555
1556 if (sv_hook) 1612 if (sv_hook)
1557 { 1613 {
1558 dSP; 1614 dSP;
1559 1615
1560 ENTER; 1616 ENTER;
1561 SAVETMPS; 1617 SAVETMPS;
1562 1618
1563 PUSHMARK (SP); 1619 PUSHMARK (SP);
1564 PUTBACK; 1620 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1622
1568 FREETMPS; 1623 FREETMPS;
1569 LEAVE; 1624 LEAVE;
1570 } 1625 }
1571 1626
… …
1574 1629
1575 return 1; 1630 return 1;
1576} 1631}
1577 1632
1578static int 1633static int
1579api_is_ready (SV *coro_sv) 1634api_is_ready (pTHX_ SV *coro_sv)
1580{ 1635{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1636 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1637}
1585 1638
1639/* expects to own a reference to next->hv */
1586INLINE void 1640INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1588{ 1642{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;)
1592 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX);
1595
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv))
1598 {
1599 dSP;
1600 UNLOCK;
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1609
1610 FREETMPS;
1611 LEAVE;
1612 continue;
1613 }
1614
1615 ta->next = SvSTATE (next_sv);
1616
1617 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */
1623 continue;
1624 }
1625
1626 --coro_nready;
1627 UNLOCK;
1628 break;
1629 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1643 SV *prev_sv = SvRV (coro_current);
1644
1633 ta->prev = SvSTATE (prev_sv); 1645 ta->prev = SvSTATE_hv (prev_sv);
1646 ta->next = next;
1647
1634 TRANSFER_CHECK (*ta); 1648 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1649
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1650 SvRV_set (coro_current, (SV *)next->hv);
1638 1651
1639 LOCK;
1640 free_coro_mortal (aTHX); 1652 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1653 coro_mortal = prev_sv;
1642 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 }
1643} 1705}
1644 1706
1645INLINE void 1707INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1708prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1709{
1648 api_ready (coro_current); 1710 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1711 prepare_schedule (aTHX_ ta);
1650} 1712}
1651 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
1652static int 1747static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1748api_cede (pTHX)
1654{ 1749{
1655 if (coro_nready) 1750 struct coro_transfer_args ta;
1656 { 1751
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1752 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1753
1754 if (expect_true (ta.prev != ta.next))
1755 {
1756 TRANSFER (ta, 1);
1660 return 1; 1757 return 1;
1661 } 1758 }
1662 else 1759 else
1663 return 0; 1760 return 0;
1664} 1761}
1665 1762
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1763static int
1677api_cede (void) 1764api_cede_notself (pTHX)
1678{ 1765{
1679 dTHX; 1766 if (coro_nready)
1767 {
1680 struct transfer_args ta; 1768 struct coro_transfer_args ta;
1681 1769
1682 prepare_cede (aTHX_ &ta); 1770 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1771 TRANSFER (ta, 1);
1687 return 1; 1772 return 1;
1688 } 1773 }
1689 else 1774 else
1690 return 0; 1775 return 0;
1691} 1776}
1692 1777
1693static int 1778static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1779api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1780{
1711 dTHX;
1712 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");
1713 1785
1714 if (flags & CC_TRACE) 1786 if (flags & CC_TRACE)
1715 { 1787 {
1716 if (!coro->cctx) 1788 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1789 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1790 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1791 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 1792
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1793 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1794 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1795 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1796 {
… …
1729 else 1801 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1802 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1803 }
1732} 1804}
1733 1805
1734#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
1735static int 1862static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1863slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1737{ 1864{
1738 AV *padlist; 1865 HV *hv = (HV *)SvRV (coro_current);
1739 AV *av = (AV *)mg->mg_obj; 1866 struct coro *coro = (struct coro *)frame->data;
1740 1867
1741 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 }
1742 1991
1743 return 0; 1992 return 0;
1744} 1993}
1745 1994
1746static MGVTBL coro_gensub_vtbl = { 1995static void
1747 0, 0, 0, 0, 1996slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 1997{
1749}; 1998 SV *cb;
1750#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}
1751 2286
1752/*****************************************************************************/ 2287/*****************************************************************************/
1753/* PerlIO::cede */ 2288/* PerlIO::cede */
1754 2289
1755typedef struct 2290typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2318 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2319 double now = nvtime ();
1785 2320
1786 if (now >= self->next) 2321 if (now >= self->next)
1787 { 2322 {
1788 api_cede (); 2323 api_cede (aTHX);
1789 self->next = now + self->every; 2324 self->next = now + self->every;
1790 } 2325 }
1791 2326
1792 return PerlIOBuf_flush (aTHX_ f); 2327 return PerlIOBuf_flush (aTHX_ f);
1793} 2328}
… …
1823 PerlIOBuf_get_cnt, 2358 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2359 PerlIOBuf_set_ptrcnt,
1825}; 2360};
1826 2361
1827/*****************************************************************************/ 2362/*****************************************************************************/
2363/* Coro::Semaphore & Coro::Signal */
1828 2364
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2365static SV *
1839pp_restore (pTHX) 2366coro_waitarray_new (pTHX_ int count)
1840{ 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 {
1841 dSP; 2671 dSP;
2672 int i;
1842 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
1843 PUSHMARK (SP); 2722 PUSHMARK (SP);
1844 2723
1845 EXTEND (SP, 3); 2724 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2725 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2726
1850 RETURNOP (ssl_restore.op_first); 2727 for (i = 0; i < items; ++i)
1851} 2728 PUSHs (arg [i]);
1852 2729
1853/* declare prototype */ 2730 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2732
1856static OP * 2733 /* now call the AIO function - we assume our request is uncancelable */
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK; 2734 PUTBACK;
1881 switch (PL_op->op_private & 7) 2735 call_sv ((SV *)req, G_VOID | G_DISCARD);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 2736 }
1908 2737
1909 TRANSFER (ta, 0); 2738 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2739 frame->data = (void *)state;
1911 2740 frame->prepare = prepare_schedule;
1912skip: 2741 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 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
1918 2759
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2761
1921PROTOTYPES: DISABLE 2762PROTOTYPES: DISABLE
1922 2763
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2764BOOT:
1955{ 2765{
1956#ifdef USE_ITHREADS 2766#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2767# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2768 coro_thx = PERL_GET_CONTEXT;
1960# endif 2769# endif
1961#endif 2770#endif
1962 BOOT_PAGESIZE; 2771 BOOT_PAGESIZE;
1963 2772
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 2773 cctx_current = cctx_new_empty ();
1965 2774
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2777
1969 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;
… …
1985 main_top_env = PL_top_env; 2794 main_top_env = PL_top_env;
1986 2795
1987 while (main_top_env->je_prev) 2796 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2797 main_top_env = main_top_env->je_prev;
1989 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
1990 coroapi.ver = CORO_API_VERSION; 2809 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2810 coroapi.rev = CORO_API_REVISION;
2811
1992 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;
1993 2820
1994 { 2821 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2823
1997 if (!svp) croak ("Time::HiRes is required"); 2824 if (!svp) croak ("Time::HiRes is required");
… …
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2004} 2831}
2005 2832
2006SV * 2833SV *
2007new (char *klass, ...) 2834new (char *klass, ...)
2835 ALIAS:
2836 Coro::new = 1
2008 CODE: 2837 CODE:
2009{ 2838{
2010 struct coro *coro; 2839 struct coro *coro;
2011 MAGIC *mg; 2840 MAGIC *mg;
2012 HV *hv; 2841 HV *hv;
2842 CV *cb;
2013 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 }
2014 2858
2015 Newz (0, coro, 1, struct coro); 2859 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV (); 2860 coro->args = newAV ();
2017 coro->flags = CF_NEW; 2861 coro->flags = CF_NEW;
2018 2862
… …
2023 coro->hv = hv = newHV (); 2867 coro->hv = hv = newHV ();
2024 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);
2025 mg->mg_flags |= MGf_DUP; 2869 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027 2871
2872 if (items > 1)
2873 {
2028 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
2029 for (i = 1; i < items; i++) 2884 for (i = 2; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
2031} 2887}
2032 OUTPUT: 2888 OUTPUT:
2033 RETVAL 2889 RETVAL
2890
2891void
2892transfer (...)
2893 PROTOTYPE: $$
2894 CODE:
2895 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 2896
2035bool 2897bool
2036_destroy (SV *coro_sv) 2898_destroy (SV *coro_sv)
2037 CODE: 2899 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2043_exit (int code) 2905_exit (int code)
2044 PROTOTYPE: $ 2906 PROTOTYPE: $
2045 CODE: 2907 CODE:
2046 _exit (code); 2908 _exit (code);
2047 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
2048int 2929int
2049cctx_stacksize (int new_stacksize = 0) 2930cctx_stacksize (int new_stacksize = 0)
2931 PROTOTYPE: ;$
2050 CODE: 2932 CODE:
2051 RETVAL = cctx_stacksize; 2933 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 2934 if (new_stacksize)
2053 { 2935 {
2054 cctx_stacksize = new_stacksize; 2936 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 2939 OUTPUT:
2058 RETVAL 2940 RETVAL
2059 2941
2060int 2942int
2061cctx_max_idle (int max_idle = 0) 2943cctx_max_idle (int max_idle = 0)
2944 PROTOTYPE: ;$
2062 CODE: 2945 CODE:
2063 RETVAL = cctx_max_idle; 2946 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 2947 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 2948 cctx_max_idle = max_idle;
2066 OUTPUT: 2949 OUTPUT:
2067 RETVAL 2950 RETVAL
2068 2951
2069int 2952int
2070cctx_count () 2953cctx_count ()
2954 PROTOTYPE:
2071 CODE: 2955 CODE:
2072 RETVAL = cctx_count; 2956 RETVAL = cctx_count;
2073 OUTPUT: 2957 OUTPUT:
2074 RETVAL 2958 RETVAL
2075 2959
2076int 2960int
2077cctx_idle () 2961cctx_idle ()
2962 PROTOTYPE:
2078 CODE: 2963 CODE:
2079 RETVAL = cctx_idle; 2964 RETVAL = cctx_idle;
2080 OUTPUT: 2965 OUTPUT:
2081 RETVAL 2966 RETVAL
2082 2967
2083void 2968void
2084list () 2969list ()
2970 PROTOTYPE:
2085 PPCODE: 2971 PPCODE:
2086{ 2972{
2087 struct coro *coro; 2973 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 2974 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 2975 if (coro->hv)
… …
2151 3037
2152void 3038void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3039throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3040 PROTOTYPE: $;$
2155 CODE: 3041 CODE:
3042{
3043 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 3045 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3047}
2158 3048
2159void 3049void
2160api_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
2161 3053
2162SV * 3054SV *
2163has_cctx (Coro::State coro) 3055has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3056 PROTOTYPE: $
2165 CODE: 3057 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3058 /* maybe manage the running flag differently */
3059 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3060 OUTPUT:
2168 RETVAL 3061 RETVAL
2169 3062
2170int 3063int
2171is_traced (Coro::State coro) 3064is_traced (Coro::State coro)
… …
2189 OUTPUT: 3082 OUTPUT:
2190 RETVAL 3083 RETVAL
2191 3084
2192void 3085void
2193force_cctx () 3086force_cctx ()
3087 PROTOTYPE:
2194 CODE: 3088 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3089 cctx_current->idle_sp = 0;
2197 3090
2198void 3091void
2199swap_defsv (Coro::State self) 3092swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3093 PROTOTYPE: $
2201 ALIAS: 3094 ALIAS:
2202 swap_defav = 1 3095 swap_defav = 1
2203 CODE: 3096 CODE:
2204 if (!self->slot) 3097 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3098 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3099 else
2207 { 3100 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3101 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3103
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3104 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3105 }
2213 3106
3107
2214MODULE = Coro::State PACKAGE = Coro 3108MODULE = Coro::State PACKAGE = Coro
2215 3109
2216BOOT: 3110BOOT:
2217{ 3111{
2218 int i; 3112 int i;
2219 3113
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 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);
2226 3128
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3129 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3130
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2238 3140
2239 { 3141 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3143
2242 coroapi.schedule = api_schedule; 3144 coroapi.schedule = api_schedule;
3145 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3146 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3147 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3148 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3149 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3150 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3151 coroapi.current = coro_current;
2249 3152
2250 GCoroAPI = &coroapi; 3153 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3154 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3155 SvREADONLY_on (sv);
2253 } 3156 }
2254} 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);
2255 3194
2256void 3195void
2257_set_current (SV *current) 3196_set_current (SV *current)
2258 PROTOTYPE: $ 3197 PROTOTYPE: $
2259 CODE: 3198 CODE:
… …
2262 3201
2263void 3202void
2264_set_readyhook (SV *hook) 3203_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3204 PROTOTYPE: $
2266 CODE: 3205 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3206 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 3208
2272int 3209int
2273prio (Coro::State coro, int newprio = 0) 3210prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$
2274 ALIAS: 3212 ALIAS:
2275 nice = 1 3213 nice = 1
2276 CODE: 3214 CODE:
2277{ 3215{
2278 RETVAL = coro->prio; 3216 RETVAL = coro->prio;
… …
2293 3231
2294SV * 3232SV *
2295ready (SV *self) 3233ready (SV *self)
2296 PROTOTYPE: $ 3234 PROTOTYPE: $
2297 CODE: 3235 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3236 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3237 OUTPUT:
2300 RETVAL 3238 RETVAL
2301 3239
2302int 3240int
2303nready (...) 3241nready (...)
… …
2305 CODE: 3243 CODE:
2306 RETVAL = coro_nready; 3244 RETVAL = coro_nready;
2307 OUTPUT: 3245 OUTPUT:
2308 RETVAL 3246 RETVAL
2309 3247
2310# for async_pool speedup
2311void 3248void
2312_pool_1 (SV *cb) 3249_pool_handler (...)
2313 CODE: 3250 CODE:
2314{ 3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current);
2317 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av;
2320 int i, len;
2321 3252
2322 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)
2323 { 3268 {
2324 SV *old = PL_diehook; 3269 PUSHMARK (SP);
2325 PL_diehook = 0; 3270 EXTEND (SP, 2);
2326 SvREFCNT_dec (old); 3271 PUSHs (sv_Coro);
2327 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));
2328 } 3278 }
2329 3279
2330 SvREFCNT_dec (coro->saved_deffh);
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 hv_store (hv, "desc", sizeof ("desc") - 1,
2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2335
2336 invoke_av = (AV *)SvRV (invoke);
2337 len = av_len (invoke_av);
2338
2339 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2340
2341 if (len > 0)
2342 { 3280 {
2343 av_fill (defav, len - 1); 3281 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3282
2345 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;
2346 } 3287 }
2347 3288
3289 api_ready (aTHX_ (SV *)hv);
3290
3291 if (GIMME_V != G_VOID)
3292 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3293 else
2348 SvREFCNT_dec (invoke); 3294 SvREFCNT_dec (hv);
2349} 3295}
2350 3296
2351void 3297SV *
2352_pool_2 (SV *cb) 3298rouse_cb ()
3299 PROTOTYPE:
2353 CODE: 3300 CODE:
2354{ 3301 RETVAL = coro_new_rouse_cb (aTHX);
2355 struct coro *coro = SvSTATE (coro_current);
2356
2357 sv_setsv (cb, &PL_sv_undef);
2358
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0;
2361
2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n");
2369 }
2370
2371 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374
2375 coro->prio = 0;
2376
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0);
2379
2380 av_push (av_async_pool, newSVsv (coro_current));
2381}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 3302 OUTPUT:
2427 RETVAL 3303 RETVAL
2428 3304
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 3305void
2435_get_state (SV *self) 3306rouse_wait (...)
3307 PROTOTYPE: ;$
2436 PPCODE: 3308 PPCODE:
2437{ 3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445 3310
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450 3311
2451 av_extend (av, AvFILLp (defav) + 1 + 1); 3312MODULE = Coro::State PACKAGE = PerlIO::cede
2452 3313
2453 for (i = 0; i <= AvFILLp (defav); ++i) 3314BOOT:
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3315 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2455 3316
2456 av_push (av, data_sv);
2457 3317
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3318MODULE = Coro::State PACKAGE = Coro::Semaphore
2459 3319
2460 api_ready (self); 3320SV *
2461} 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
2462 3344
2463void 3345void
2464_set_state (SV *state) 3346up (SV *self, int adjust = 1)
2465 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)
2466 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:
2467{ 3418{
2468 AV *av = (AV *)SvRV (state); 3419 AV *av = (AV *)SvRV (self);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3420 coro_signal_wake (aTHX_ av, AvFILLp (av));
2470 int i; 3421}
2471 3422
2472 errno = data->errorno; 3423void
2473 PL_laststype = data->laststype; 3424send (SV *self)
2474 PL_laststatval = data->laststatval; 3425 CODE:
2475 PL_statcache = data->statcache; 3426{
3427 AV *av = (AV *)SvRV (self);
2476 3428
2477 EXTEND (SP, AvFILLp (av)); 3429 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3430 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3431 else
3432 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3433}
3434
3435IV
3436awaited (SV *self)
3437 CODE:
3438 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3439 OUTPUT:
3440 RETVAL
2481 3441
2482 3442
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3443MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3444
2485BOOT: 3445BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3446 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3447
2488SV * 3448void
2489_schedule (...) 3449_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3450 CODE:
2492{ 3451{
2493 static int incede; 3452 static int incede;
2494 3453
2495 api_cede_notself (); 3454 api_cede_notself (aTHX);
2496 3455
2497 ++incede; 3456 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3457 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3458 ;
2500 3459
2501 sv_setsv (sv_activity, &PL_sv_undef); 3460 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3461 if (coro_nready >= incede)
2503 { 3462 {
2504 PUSHMARK (SP); 3463 PUSHMARK (SP);
2505 PUTBACK; 3464 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3465 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3466 }
2509 3467
2510 --incede; 3468 --incede;
2511} 3469}
2512 3470
2513 3471
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3472MODULE = Coro::State PACKAGE = Coro::AIO
2515 3473
2516BOOT: 3474void
2517 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}
2518 3484

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines