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Comparing Coro/Coro/State.xs (file contents):
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 177
188struct transfer_args 178static AV *av_destroy; /* destruction queue */
189{ 179static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 180static SV *sv_idle; /* $Coro::idle */
191};
192 181
193static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 184static SV *rv_diehook;
196static SV *rv_warnhook; 185static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
198 187
199/* async_pool helper stuff */ 188/* async_pool helper stuff */
200static SV *sv_pool_rss; 189static SV *sv_pool_rss;
201static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
203 196
204/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
205static SV *sv_activity; 198static SV *sv_activity;
206 199
207static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 210};
218 211
219/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 213typedef struct coro_cctx
214{
221 struct coro_cctx *next; 215 struct coro_cctx *next;
222 216
223 /* the stack */ 217 /* the stack */
224 void *sptr; 218 void *sptr;
225 size_t ssize; 219 size_t ssize;
… …
234#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
235 int valgrind_id; 229 int valgrind_id;
236#endif 230#endif
237 unsigned char flags; 231 unsigned char flags;
238} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
239 237
240enum { 238enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 243};
246 244
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 246typedef struct
247{
249 SV *defsv; 248 SV *defsv;
250 AV *defav; 249 AV *defav;
251 SV *errsv; 250 SV *errsv;
252 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 253#define VAR(name,type) type name;
254# include "state.h" 254# include "state.h"
255#undef VAR 255#undef VAR
256} perl_slots; 256} perl_slots;
257 257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 259
260/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
261struct coro { 261struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 263 coro_cctx *cctx;
264 264
265 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 267 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
268 269
270 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
273 276
274 /* statistics */ 277 /* statistics */
275 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
276 279
277 /* coro process data */ 280 /* coro process data */
278 int prio; 281 int prio;
279 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
280 284
281 /* async_pool */ 285 /* async_pool */
282 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
283 289
284 /* linked list */ 290 /* linked list */
285 struct coro *next, *prev; 291 struct coro *next, *prev;
286}; 292};
287 293
288typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
290 301
291/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
292 303
293#define PRIO_MAX 3 304#define PRIO_MAX 3
294#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
299 310
300/* for Coro.pm */ 311/* for Coro.pm */
301static SV *coro_current; 312static SV *coro_current;
302static SV *coro_readyhook; 313static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 316static struct coro *coro_first;
305#define coro_nready coroapi.nready 317#define coro_nready coroapi.nready
306 318
307/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
308 320
… …
334 get_hv (name, create); 346 get_hv (name, create);
335#endif 347#endif
336 return get_hv (name, create); 348 return get_hv (name, create);
337} 349}
338 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
339static AV * 360static AV *
340coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
341{ 362{
342 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
344 365
345 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 417
397 return 0; 418 return 0;
398} 419}
399 420
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 421#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 423
403static MGVTBL coro_cv_vtbl = { 424static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 425 0, 0, 0, 0,
405 coro_cv_free 426 coro_cv_free
406}; 427};
407 428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
408#define CORO_MAGIC(sv, type) \ 434#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 435 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 436 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 437 : 0)
414 438
415#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)
416#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)
417 441
418INLINE struct coro * 442INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 443SvSTATE_ (pTHX_ SV *coro)
420{ 444{
421 HV *stash; 445 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 462 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 463 return (struct coro *)mg->mg_ptr;
440} 464}
441 465
442#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))
443 471
444/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
445static void 473static void
446get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
447{ 475{
… …
453 else 481 else
454 { 482 {
455#if CORO_PREFER_PERL_FUNCTIONS 483#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 484 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 485 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 486 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 487 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 488 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 489 SvREFCNT_dec (cp);
462#else 490#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 492#endif
465 } 493 }
466} 494}
467 495
468static void 496static void
… …
490 perl_slots *slot = c->slot; 518 perl_slots *slot = c->slot;
491 c->slot = 0; 519 c->slot = 0;
492 520
493 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
494 522
495 GvSV (PL_defgv) = slot->defsv; 523 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 524 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 525 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
499 528
500 #define VAR(name,type) PL_ ## name = slot->name; 529 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 530 # include "state.h"
502 #undef VAR 531 #undef VAR
503 532
… …
514 CvPADLIST (cv) = (AV *)POPs; 543 CvPADLIST (cv) = (AV *)POPs;
515 } 544 }
516 545
517 PUTBACK; 546 PUTBACK;
518 } 547 }
548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
519} 551}
520 552
521static void 553static void
522save_perl (pTHX_ Coro__State c) 554save_perl (pTHX_ Coro__State c)
523{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
524 { 559 {
525 dSP; 560 dSP;
526 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
583 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
584 619
585 { 620 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 622
588 slot->defav = GvAV (PL_defgv); 623 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 624 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 625 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
592 628
593 #define VAR(name,type) slot->name = PL_ ## name; 629 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 630 # include "state.h"
595 #undef VAR 631 #undef VAR
596 } 632 }
597} 633}
598 634
599/* 635/*
600 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
604 */ 640 */
605#if CORO_PREFER_PERL_FUNCTIONS 641#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 642# define coro_init_stacks(thx) init_stacks ()
607#else 643#else
608static void 644static void
609coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
610{ 646{
611 PL_curstackinfo = new_stackinfo(32, 8); 647 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 711 Safefree (PL_retstack);
676#endif 712#endif
677} 713}
678 714
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
679static size_t 724static size_t
680coro_rss (pTHX_ struct coro *coro) 725coro_rss (pTHX_ struct coro *coro)
681{ 726{
682 size_t rss = sizeof (*coro); 727 size_t rss = sizeof (*coro);
683 728
684 if (coro->mainstack) 729 if (coro->mainstack)
685 { 730 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 731 if (coro->flags & CF_RUNNING)
690 { 732 {
691 slot = &tmp_slot; 733 #define SYM(sym) PL_ ## sym
692 734 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 735 #undef SYM
696 } 736 }
697 else 737 else
698 slot = coro->slot;
699
700 if (slot)
701 { 738 {
702 rss += sizeof (slot->curstackinfo); 739 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 740 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 741 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 742 }
714 } 743 }
715 744
716 return rss; 745 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 746}
745 747
746/** coroutine stack handling ************************************************/ 748/** coroutine stack handling ************************************************/
747 749
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 836
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 838}
837 839
838static 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 */
839coro_setup (pTHX_ struct coro *coro) 862coro_setup (pTHX_ struct coro *coro)
840{ 863{
841 /* 864 /*
842 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
843 */ 866 */
… …
845 868
846 PL_runops = RUNOPS_DEFAULT; 869 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 870 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 871 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 876 PL_curpm = 0;
851 PL_curpad = 0; 877 PL_curpad = 0;
852 PL_localizing = 0; 878 PL_localizing = 0;
853 PL_dirty = 0; 879 PL_dirty = 0;
854 PL_restartop = 0; 880 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 881#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 882 PL_parser = 0;
857#endif 883#endif
884 PL_hints = 0;
858 885
859 /* recreate the die/warn hooks */ 886 /* recreate the die/warn hooks */
860 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 );
861 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);
862 889
863 GvSV (PL_defgv) = newSV (0); 890 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 891 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 892 GvSV (PL_errgv) = newSV (0);
866 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;
867 PL_rs = newSVsv (GvSV (irsgv)); 895 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 897
870 { 898 {
871 dSP; 899 dSP;
872 UNOP myop; 900 UNOP myop;
873 901
874 Zero (&myop, 1, UNOP); 902 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 905 myop.op_flags = OPf_WANT_VOID;
877 906
878 PUSHMARK (SP); 907 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 908 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 909 PUTBACK;
881 PL_op = (OP *)&myop; 910 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 912 }
885 913
886 /* 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
887 * 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.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 916 */
890 SLF_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;
891} 930}
892 931
893static void 932static void
894coro_destruct (pTHX_ struct coro *coro) 933coro_destruct (pTHX_ struct coro *coro)
895{ 934{
… …
914 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv)); 954 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv); 955 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs); 956 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv)); 957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
919 959
920 SvREFCNT_dec (PL_diehook); 960 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 961 SvREFCNT_dec (PL_warnhook);
922 962
923 SvREFCNT_dec (coro->saved_deffh); 963 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
925 967
926 coro_destruct_stacks (aTHX); 968 coro_destruct_stacks (aTHX);
927} 969}
928 970
929INLINE void 971INLINE void
… …
939static int 981static int
940runops_trace (pTHX) 982runops_trace (pTHX)
941{ 983{
942 COP *oldcop = 0; 984 COP *oldcop = 0;
943 int oldcxix = -2; 985 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 986
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 988 {
949 PERL_ASYNC_CHECK (); 989 PERL_ASYNC_CHECK ();
950 990
951 if (cctx->flags & CC_TRACE_ALL) 991 if (cctx_current->flags & CC_TRACE_ALL)
952 { 992 {
953 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)
954 { 994 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 996 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 997 AV *av = newAV (); /* return values */
958 SV **cb; 998 SV **cb;
… …
995 1035
996 if (PL_curcop != &PL_compiling) 1036 if (PL_curcop != &PL_compiling)
997 { 1037 {
998 SV **cb; 1038 SV **cb;
999 1039
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1041 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1043
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1045 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1046 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1047 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1048 SV *fullname = sv_2mortal (newSV (0));
1010 1049
1011 if (isGV (gv)) 1050 if (isGV (gv))
… …
1016 SAVETMPS; 1055 SAVETMPS;
1017 EXTEND (SP, 3); 1056 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1057 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1058 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1059 PUSHs (fullname);
1021 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);
1022 PUTBACK; 1061 PUTBACK;
1023 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);
1024 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);
1025 SPAGAIN; 1064 SPAGAIN;
1026 FREETMPS; 1065 FREETMPS;
… …
1029 } 1068 }
1030 1069
1031 oldcxix = cxstack_ix; 1070 oldcxix = cxstack_ix;
1032 } 1071 }
1033 1072
1034 if (cctx->flags & CC_TRACE_LINE) 1073 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1074 {
1036 dSP; 1075 dSP;
1037 1076
1038 PL_runops = RUNOPS_DEFAULT; 1077 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1078 ENTER;
… …
1058 1097
1059 TAINT_NOT; 1098 TAINT_NOT;
1060 return 0; 1099 return 0;
1061} 1100}
1062 1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1063static void 1104static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1106{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1107 ta->prev = 0;
1068} 1108}
1069 1109
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1110static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1112{
1073/* 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 */
1074static void NOINLINE 1119static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1120cctx_prepare (pTHX)
1076{ 1121{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1122 PL_top_env = &PL_start_env;
1081 1123
1082 if (cctx->flags & CC_TRACE) 1124 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1125 PL_runops = runops_trace;
1084 1126
1085 Zero (&myop, 1, UNOP); 1127 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1128 * that can lead to creation of a new cctx */
1087 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));
1088 1131
1089 PUSHMARK (SP); 1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1133 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1134
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1136 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1137}
1098 1138
1099/* 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 */
1100INLINE void 1140INLINE void
1101transfer_tail (pTHX) 1141transfer_tail (pTHX)
1102{ 1142{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1143 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1144}
1119 1145
1120/* 1146/*
1121 * this is a _very_ stripped down perl interpreter ;) 1147 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1148 */
… …
1129# endif 1155# endif
1130#endif 1156#endif
1131 { 1157 {
1132 dTHX; 1158 dTHX;
1133 1159
1134 /* we are the alternative tail to pp_set_stacklevel */ 1160 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1161 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1162 /* PL_nop = PL_nop->op_next */
1140 1163
1141 /* inject a fake subroutine call to cctx_init */ 1164 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1165 cctx_prepare (aTHX);
1143 1166
1144 /* cctx_run is the alternative tail of transfer() */ 1167 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1168 transfer_tail (aTHX);
1146 1169
1147 /* 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 */
1148 PL_restartop = PL_op; 1171 PL_restartop = PL_op;
1149 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 */
1150 1177
1151 /* 1178 /*
1152 * 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
1153 * 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)
1154 * 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
… …
1238cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
1239{ 1266{
1240 if (!cctx) 1267 if (!cctx)
1241 return; 1268 return;
1242 1269
1270 assert (cctx != cctx_current);//D temporary
1271
1243 --cctx_count; 1272 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1273 coro_destroy (&cctx->cctx);
1245 1274
1246 /* coro_transfer creates new, empty cctx's */ 1275 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1276 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
1306 1335
1307static void 1336static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1310 if (expect_true (prev != next)) 1341 if (expect_true (prev != next))
1311 { 1342 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1345
1315 if (expect_false (next->flags & CF_RUNNING)) 1346 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1348
1318 if (expect_false (next->flags & CF_DESTROYED)) 1349 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1351
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1352#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1355#endif
1325 } 1356 }
1326} 1357}
1327 1358
1328/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
1329static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1362{
1332 dSTACKLEVEL; 1363 dSTACKLEVEL;
1333 1364
1334 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1366 if (expect_false (!prev))
1336 { 1367 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1368 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1370 }
1340 else if (expect_true (prev != next)) 1371 else if (expect_true (prev != next))
1341 { 1372 {
1342 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1343 1374
1344 if (expect_false (prev->flags & CF_NEW)) 1375 if (expect_false (prev->flags & CF_NEW))
1345 { 1376 {
1346 /* create a new empty/source context */ 1377 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1350 } 1380 }
1351 1381
1352 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1384
1357 /* first get rid of the old state */ 1385 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1386 save_perl (aTHX_ prev);
1359 1387
1360 if (expect_false (next->flags & CF_NEW)) 1388 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1366 } 1394 }
1367 else 1395 else
1368 load_perl (aTHX_ next); 1396 load_perl (aTHX_ next);
1369 1397
1370 prev__cctx = prev->cctx; 1398 assert (!prev->cctx);//D temporary
1371 1399
1372 /* possibly untie and reuse the cctx */ 1400 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1401 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1402 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1403 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1404 && !force_cctx
1377 )) 1405 ))
1378 { 1406 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1409
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1413 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1414 next->cctx = cctx_get (aTHX);
1389 1415
1390 cctx_put (prev__cctx); 1416 cctx_put (cctx_current);
1391 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1392 1420
1393 ++next->usecount; 1421 ++next->usecount;
1394 1422
1395 if (expect_true (!next->cctx)) 1423 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1425
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1426 next->cctx = 0;
1399 transfer_next = next;
1400 1427
1401 if (expect_false (prev__cctx != next->cctx)) 1428 if (expect_false (cctx_prev != cctx_current))
1402 { 1429 {
1403 prev__cctx->top_env = PL_top_env; 1430 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1431 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1433 }
1407 1434
1408 transfer_tail (aTHX); 1435 transfer_tail (aTHX);
1409 } 1436 }
1410} 1437}
… …
1417static int 1444static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1446{
1420 if (coro->flags & CF_DESTROYED) 1447 if (coro->flags & CF_DESTROYED)
1421 return 0; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1422 1452
1423 coro->flags |= CF_DESTROYED; 1453 coro->flags |= CF_DESTROYED;
1424 1454
1425 if (coro->flags & CF_READY) 1455 if (coro->flags & CF_READY)
1426 { 1456 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1458 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1459 --coro_nready;
1431 UNLOCK;
1432 } 1460 }
1433 else 1461 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1463
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1465 {
1438 struct coro temp; 1466 struct coro temp;
1439 1467
1440 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1469
1443 save_perl (aTHX_ &temp); 1470 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1471 load_perl (aTHX_ coro);
1445 1472
1446 coro_destruct (aTHX_ coro); 1473 coro_destruct (aTHX_ coro);
… …
1449 1476
1450 coro->slot = 0; 1477 coro->slot = 0;
1451 } 1478 }
1452 1479
1453 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1455 1484
1456 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1459 1488
… …
1497# define MGf_DUP 0 1526# define MGf_DUP 0
1498#endif 1527#endif
1499}; 1528};
1500 1529
1501static void 1530static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1532{
1504 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1535 TRANSFER_CHECK (*ta);
1507} 1536}
1508 1537
1509static void 1538static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1540{
1512 struct transfer_args ta; 1541 struct coro_transfer_args ta;
1513 1542
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1544 TRANSFER (ta, 1);
1516} 1545}
1517 1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1518/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1519 1571
1520static void 1572INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1573coro_enq (pTHX_ struct coro *coro)
1522{ 1574{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1576}
1525 1577
1526static SV * 1578INLINE SV *
1527coro_deq (pTHX) 1579coro_deq (pTHX)
1528{ 1580{
1529 int prio; 1581 int prio;
1530 1582
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1540{ 1592{
1541 struct coro *coro; 1593 struct coro *coro;
1542 SV *sv_hook; 1594 SV *sv_hook;
1543 void (*xs_hook)(void); 1595 void (*xs_hook)(void);
1544 1596
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1549 1598
1550 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1551 return 0; 1600 return 0;
1552 1601
1553 coro->flags |= CF_READY; 1602 coro->flags |= CF_READY;
1554 1603
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1606
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1607 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1608 ++coro_nready;
1562 1609
1563 UNLOCK;
1564
1565 if (sv_hook) 1610 if (sv_hook)
1566 { 1611 {
1567 dSP; 1612 dSP;
1568 1613
1569 ENTER; 1614 ENTER;
1570 SAVETMPS; 1615 SAVETMPS;
1571 1616
1572 PUSHMARK (SP); 1617 PUSHMARK (SP);
1573 PUTBACK; 1618 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1620
1577 FREETMPS; 1621 FREETMPS;
1578 LEAVE; 1622 LEAVE;
1579 } 1623 }
1580 1624
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1589{ 1633{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1635}
1592 1636
1637/* expects to own a reference to next->hv */
1593INLINE void 1638INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1640{
1596 SV *prev_sv, *next_sv;
1597
1598 for (;;)
1599 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX);
1602
1603 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv))
1605 {
1606 dSP;
1607 UNLOCK;
1608
1609 ENTER;
1610 SAVETMPS;
1611
1612 PUSHMARK (SP);
1613 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1616
1617 FREETMPS;
1618 LEAVE;
1619 continue;
1620 }
1621
1622 ta->next = SvSTATE (next_sv);
1623
1624 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 UNLOCK;
1635 break;
1636 }
1637
1638 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1640 ta->prev = SvSTATE (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1641 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1647
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1645 1649
1646 LOCK;
1647 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1649 UNLOCK; 1652}
1653
1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1650} 1703}
1651 1704
1652INLINE void 1705INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1707{
1655 api_ready (aTHX_ coro_current); 1708 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
1657} 1710}
1658 1711
1659static void 1712INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1714{
1662 SV *prev = SvRV (coro_current); 1715 SV *prev = SvRV (coro_current);
1663 1716
1664 if (coro_nready) 1717 if (coro_nready)
1665 { 1718 {
1666 prepare_schedule (aTHX_ ta); 1719 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1720 api_ready (aTHX_ prev);
1668 } 1721 }
1669 else 1722 else
1670 ta->prev = ta->next = SvSTATE (prev); 1723 prepare_nop (aTHX_ ta);
1671} 1724}
1672 1725
1673static void 1726static void
1674api_schedule (pTHX) 1727api_schedule (pTHX)
1675{ 1728{
1676 struct transfer_args ta; 1729 struct coro_transfer_args ta;
1677 1730
1678 prepare_schedule (aTHX_ &ta); 1731 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1732 TRANSFER (ta, 1);
1680} 1733}
1681 1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1682static int 1745static int
1683api_cede (pTHX) 1746api_cede (pTHX)
1684{ 1747{
1685 struct transfer_args ta; 1748 struct coro_transfer_args ta;
1686 1749
1687 prepare_cede (aTHX_ &ta); 1750 prepare_cede (aTHX_ &ta);
1688 1751
1689 if (expect_true (ta.prev != ta.next)) 1752 if (expect_true (ta.prev != ta.next))
1690 { 1753 {
… …
1698static int 1761static int
1699api_cede_notself (pTHX) 1762api_cede_notself (pTHX)
1700{ 1763{
1701 if (coro_nready) 1764 if (coro_nready)
1702 { 1765 {
1703 struct transfer_args ta; 1766 struct coro_transfer_args ta;
1704 1767
1705 prepare_cede_notself (aTHX_ &ta); 1768 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1707 return 1; 1770 return 1;
1708 } 1771 }
… …
1713static void 1776static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1778{
1716 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1717 1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1718 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1719 { 1785 {
1720 if (!coro->cctx) 1786 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1787 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1790
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1792 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1794 {
… …
1733 else 1799 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1800 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1801 }
1736} 1802}
1737 1803
1738#if 0 1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1739static int 1860static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1862{
1742 AV *padlist; 1863 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1864 struct coro *coro = (struct coro *)frame->data;
1744 1865
1745 abort (); 1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1746 1989
1747 return 0; 1990 return 0;
1748} 1991}
1749 1992
1750static MGVTBL coro_gensub_vtbl = { 1993static void
1751 0, 0, 0, 0, 1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1995{
1753}; 1996 SV *cb;
1754#endif 1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2033
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */
2036
2037 SvREFCNT_dec (coro->rouse_cb);
2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
1755 2284
1756/*****************************************************************************/ 2285/*****************************************************************************/
1757/* PerlIO::cede */ 2286/* PerlIO::cede */
1758 2287
1759typedef struct 2288typedef struct
… …
1827 PerlIOBuf_get_cnt, 2356 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2357 PerlIOBuf_set_ptrcnt,
1829}; 2358};
1830 2359
1831/*****************************************************************************/ 2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
1832 2362
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2363static SV *
1843pp_restore (pTHX) 2364coro_waitarray_new (pTHX_ int count)
1844{ 2365{
1845 dSP; 2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
1846 2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
2378
2379 return newRV_noinc ((SV *)av);
2380}
2381
2382/* semaphore */
2383
2384static void
2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2386{
2387 SV *count_sv = AvARRAY (av)[0];
2388 IV count = SvIVX (count_sv);
2389
2390 count += adjust;
2391 SvIVX (count_sv) = count;
2392
2393 /* now wake up as many waiters as are expected to lock */
2394 while (count > 0 && AvFILLp (av) > 0)
2395 {
2396 SV *cb;
2397
2398 /* swap first two elements so we can shift a waiter */
2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2400 AvARRAY (av)[1] = count_sv;
2401 cb = av_shift (av);
2402
2403 if (SvOBJECT (cb))
2404 {
2405 api_ready (aTHX_ cb);
2406 --count;
2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
1847 PUSHMARK (SP); 2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
1848 2416
1849 EXTEND (SP, 3); 2417 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2418 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2419}
1856 2420
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2421static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2423{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2426}
1858 2427
1859enum { 2428static int
1860 CORO_SLF_CUSTOM = 0, 2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2430{
1862 CORO_SLF_TRANSFER = 2 2431 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0];
2433
2434 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW)
2436 return 0;
2437 else if (SvIVX (count_sv) > 0)
2438 {
2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2446 return 0;
2447 }
2448 else
2449 {
2450 int i;
2451 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */
2454
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current))
2457 return 1;
2458
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2460 return 1;
2461 }
2462}
2463
2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2478{
2479 AV *av = (AV *)SvRV (arg [0]);
2480
2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2482 {
2483 frame->data = (void *)av;
2484 frame->prepare = prepare_nop;
2485 }
2486 else
2487 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2496 }
2497}
2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2503 frame->check = slf_check_semaphore_down;
2504}
2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2585}
2586
2587/*****************************************************************************/
2588/* Coro::AIO */
2589
2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2591
2592/* helper storage struct */
2593struct io_state
2594{
2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
1863}; 2599};
1864 2600
1865/* declare prototype */ 2601static void
1866XS(XS_Coro__State__set_stacklevel); 2602coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2614
2615 {
2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2617
2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
1877 dSP; 2669 dSP;
1878 struct transfer_args ta; 2670 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 2671
1884 /* do a quick consistency check on the "function" object, and if it isn't */ 2672 EXTEND (SP, AvFILLp (state) + 1);
1885 /* for us, divert to the real entersub */ 2673 for (i = 0; i <= AvFILLp (state); ++i)
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) 2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888 2675
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2676 PUTBACK;
2677 }
1901 2678
1902 if (!ix) 2679 return 0;
1903 { 2680}
1904 slf = (struct CoroSLF *)CvSTART (GvCV (*sp)); 2681
1905 ix = slf->prepare (aTHX_ arg, items); 2682static void
2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2684{
2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2686 SV *coro_hv = SvRV (coro_current);
2687 struct coro *coro = SvSTATE_hv (coro_hv);
2688
2689 /* put our coroutine id on the state arg */
2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
2691
2692 /* first see whether we have a non-zero priority and set it as AIO prio */
2693 if (coro->prio)
1906 } 2694 {
2695 dSP;
1907 2696
1908 switch (ix) 2697 static SV *prio_cv;
2698 static SV *prio_sv;
2699
2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
2705
2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
2709
2710 PUTBACK;
2711 call_sv (prio_cv, G_VOID | G_DISCARD);
1909 { 2712 }
1910 case CORO_SLF_SET_STACKLEVEL:
1911 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912 break;
1913 2713
1914 case CORO_SLF_TRANSFER: 2714 /* now call the original request */
1915 if (items != 2) 2715 {
1916 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2716 dSP;
2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
1917 2719
1918 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2720 PUSHMARK (SP);
1919 break;
1920 2721
1921 case CORO_SLF_SCHEDULE: 2722 /* first push all args to the stack */
1922 prepare_schedule (aTHX_ &ta); 2723 EXTEND (SP, items + 1);
1923 break;
1924 2724
1925 case CORO_SLF_CEDE: 2725 for (i = 0; i < items; ++i)
1926 prepare_cede (aTHX_ &ta); 2726 PUSHs (arg [i]);
1927 break;
1928 2727
1929 case CORO_SLF_CEDE_NOTSELF: 2728 /* now push the callback closure */
1930 prepare_cede_notself (aTHX_ &ta); 2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1931 break;
1932 2730
1933 default: 2731 /* now call the AIO function - we assume our request is uncancelable */
1934 abort ();
1935 }
1936
1937 do
1938 TRANSFER (ta, 0);
1939 while (slf && slf->check (aTHX));
1940
1941 SPAGAIN;
1942
1943 PUTBACK; 2732 PUTBACK;
1944 SLF_TAIL; 2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
1945 SPAGAIN; 2734 }
1946 RETURN;
1947}
1948 2735
1949static void 2736 /* now that the requets is going, we loop toll we have a result */
1950coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2737 frame->data = (void *)state;
1951{ 2738 frame->prepare = prepare_schedule;
1952 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2739 frame->check = slf_check_aio_req;
1953
1954 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1955 slf_cv = cv;
1956
1957 /* we patch the op, and then re-run the whole call */
1958 /* we have to put the same argument on the stack for this to work */
1959 /* and this will be done by pp_restore */
1960 slf_restore.op_next = (OP *)&slf_restore;
1961 slf_restore.op_type = OP_NULL;
1962 slf_restore.op_ppaddr = pp_restore;
1963 slf_restore.op_first = PL_op;
1964
1965 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1966 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1967
1968 PL_op->op_ppaddr = pp_slf;
1969 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1970
1971 PL_op = (OP *)&slf_restore;
1972} 2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2750}
2751
2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
1973 2757
1974MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1975 2759
1976PROTOTYPES: DISABLE 2760PROTOTYPES: DISABLE
1977 2761
1978BOOT: 2762BOOT:
1979{ 2763{
1980#ifdef USE_ITHREADS 2764#ifdef USE_ITHREADS
1981 MUTEX_INIT (&coro_lock);
1982# if CORO_PTHREAD 2765# if CORO_PTHREAD
1983 coro_thx = PERL_GET_CONTEXT; 2766 coro_thx = PERL_GET_CONTEXT;
1984# endif 2767# endif
1985#endif 2768#endif
1986 BOOT_PAGESIZE; 2769 BOOT_PAGESIZE;
2770
2771 cctx_current = cctx_new_empty ();
1987 2772
1988 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1989 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1990 2775
1991 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2007 main_top_env = PL_top_env; 2792 main_top_env = PL_top_env;
2008 2793
2009 while (main_top_env->je_prev) 2794 while (main_top_env->je_prev)
2010 main_top_env = main_top_env->je_prev; 2795 main_top_env = main_top_env->je_prev;
2011 2796
2797 {
2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2799
2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2802
2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2805 }
2806
2012 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
2013 coroapi.rev = CORO_API_REVISION; 2808 coroapi.rev = CORO_API_REVISION;
2809
2014 coroapi.transfer = api_transfer; 2810 coroapi.transfer = api_transfer;
2811
2812 coroapi.sv_state = SvSTATE_;
2813 coroapi.execute_slf = api_execute_slf;
2814 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself;
2015 2818
2016 { 2819 {
2017 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018 2821
2019 if (!svp) croak ("Time::HiRes is required"); 2822 if (!svp) croak ("Time::HiRes is required");
… …
2025 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2026} 2829}
2027 2830
2028SV * 2831SV *
2029new (char *klass, ...) 2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
2030 CODE: 2835 CODE:
2031{ 2836{
2032 struct coro *coro; 2837 struct coro *coro;
2033 MAGIC *mg; 2838 MAGIC *mg;
2034 HV *hv; 2839 HV *hv;
2840 CV *cb;
2035 int i; 2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2036 2856
2037 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
2038 coro->args = newAV (); 2858 coro->args = newAV ();
2039 coro->flags = CF_NEW; 2859 coro->flags = CF_NEW;
2040 2860
… …
2045 coro->hv = hv = newHV (); 2865 coro->hv = hv = newHV ();
2046 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2047 mg->mg_flags |= MGf_DUP; 2867 mg->mg_flags |= MGf_DUP;
2048 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2049 2869
2870 if (items > 1)
2871 {
2050 av_extend (coro->args, items - 1); 2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
2051 for (i = 1; i < items; i++) 2882 for (i = 2; i < items; i++)
2052 av_push (coro->args, newSVsv (ST (i))); 2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
2053} 2885}
2054 OUTPUT: 2886 OUTPUT:
2055 RETVAL 2887 RETVAL
2056 2888
2057void 2889void
2058_set_stacklevel (...) 2890transfer (...)
2059 ALIAS: 2891 PROTOTYPE: $$
2060 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 2892 CODE:
2061 Coro::State::transfer = CORO_SLF_TRANSFER 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2062 Coro::schedule = CORO_SLF_SCHEDULE
2063 Coro::cede = CORO_SLF_CEDE
2064 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2065 CODE:
2066 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2067 2894
2068bool 2895bool
2069_destroy (SV *coro_sv) 2896_destroy (SV *coro_sv)
2070 CODE: 2897 CODE:
2071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2076_exit (int code) 2903_exit (int code)
2077 PROTOTYPE: $ 2904 PROTOTYPE: $
2078 CODE: 2905 CODE:
2079 _exit (code); 2906 _exit (code);
2080 2907
2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
2926
2081int 2927int
2082cctx_stacksize (int new_stacksize = 0) 2928cctx_stacksize (int new_stacksize = 0)
2929 PROTOTYPE: ;$
2083 CODE: 2930 CODE:
2084 RETVAL = cctx_stacksize; 2931 RETVAL = cctx_stacksize;
2085 if (new_stacksize) 2932 if (new_stacksize)
2086 { 2933 {
2087 cctx_stacksize = new_stacksize; 2934 cctx_stacksize = new_stacksize;
… …
2090 OUTPUT: 2937 OUTPUT:
2091 RETVAL 2938 RETVAL
2092 2939
2093int 2940int
2094cctx_max_idle (int max_idle = 0) 2941cctx_max_idle (int max_idle = 0)
2942 PROTOTYPE: ;$
2095 CODE: 2943 CODE:
2096 RETVAL = cctx_max_idle; 2944 RETVAL = cctx_max_idle;
2097 if (max_idle > 1) 2945 if (max_idle > 1)
2098 cctx_max_idle = max_idle; 2946 cctx_max_idle = max_idle;
2099 OUTPUT: 2947 OUTPUT:
2100 RETVAL 2948 RETVAL
2101 2949
2102int 2950int
2103cctx_count () 2951cctx_count ()
2952 PROTOTYPE:
2104 CODE: 2953 CODE:
2105 RETVAL = cctx_count; 2954 RETVAL = cctx_count;
2106 OUTPUT: 2955 OUTPUT:
2107 RETVAL 2956 RETVAL
2108 2957
2109int 2958int
2110cctx_idle () 2959cctx_idle ()
2960 PROTOTYPE:
2111 CODE: 2961 CODE:
2112 RETVAL = cctx_idle; 2962 RETVAL = cctx_idle;
2113 OUTPUT: 2963 OUTPUT:
2114 RETVAL 2964 RETVAL
2115 2965
2116void 2966void
2117list () 2967list ()
2968 PROTOTYPE:
2118 PPCODE: 2969 PPCODE:
2119{ 2970{
2120 struct coro *coro; 2971 struct coro *coro;
2121 for (coro = coro_first; coro; coro = coro->next) 2972 for (coro = coro_first; coro; coro = coro->next)
2122 if (coro->hv) 2973 if (coro->hv)
… …
2184 3035
2185void 3036void
2186throw (Coro::State self, SV *throw = &PL_sv_undef) 3037throw (Coro::State self, SV *throw = &PL_sv_undef)
2187 PROTOTYPE: $;$ 3038 PROTOTYPE: $;$
2188 CODE: 3039 CODE:
3040{
3041 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
2189 SvREFCNT_dec (self->throw); 3043 SvREFCNT_dec (*throwp);
2190 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
2191 3046
2192void 3047void
2193api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$
2194 C_ARGS: aTHX_ coro, flags 3050 C_ARGS: aTHX_ coro, flags
2195 3051
2196SV * 3052SV *
2197has_cctx (Coro::State coro) 3053has_cctx (Coro::State coro)
2198 PROTOTYPE: $ 3054 PROTOTYPE: $
2199 CODE: 3055 CODE:
2200 RETVAL = boolSV (!!coro->cctx); 3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2201 OUTPUT: 3058 OUTPUT:
2202 RETVAL 3059 RETVAL
2203 3060
2204int 3061int
2205is_traced (Coro::State coro) 3062is_traced (Coro::State coro)
… …
2223 OUTPUT: 3080 OUTPUT:
2224 RETVAL 3081 RETVAL
2225 3082
2226void 3083void
2227force_cctx () 3084force_cctx ()
3085 PROTOTYPE:
2228 CODE: 3086 CODE:
2229 struct coro *coro = SvSTATE (coro_current);
2230 coro->cctx->idle_sp = 0; 3087 cctx_current->idle_sp = 0;
2231 3088
2232void 3089void
2233swap_defsv (Coro::State self) 3090swap_defsv (Coro::State self)
2234 PROTOTYPE: $ 3091 PROTOTYPE: $
2235 ALIAS: 3092 ALIAS:
2236 swap_defav = 1 3093 swap_defav = 1
2237 CODE: 3094 CODE:
2238 if (!self->slot) 3095 if (!self->slot)
2239 croak ("cannot swap state with coroutine that has no saved state"); 3096 croak ("cannot swap state with coroutine that has no saved state,");
2240 else 3097 else
2241 { 3098 {
2242 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3099 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2244 3101
2245 SV *tmp = *src; *src = *dst; *dst = tmp; 3102 SV *tmp = *src; *src = *dst; *dst = tmp;
2246 } 3103 }
2247 3104
3105
2248MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
2249 3107
2250BOOT: 3108BOOT:
2251{ 3109{
2252 int i; 3110 int i;
2253 3111
2254 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2255 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2256 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2257 3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2258 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2259 SvREADONLY_on (coro_current); 3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2260 3126
2261 coro_stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
2262 3128
2263 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2264 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2272 3138
2273 { 3139 {
2274 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2275 3141
2276 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
3143 coroapi.schedule_to = api_schedule_to;
2277 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
2278 coroapi.cede_notself = api_cede_notself; 3145 coroapi.cede_notself = api_cede_notself;
2279 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
2280 coroapi.is_ready = api_is_ready; 3147 coroapi.is_ready = api_is_ready;
2281 coroapi.nready = coro_nready; 3148 coroapi.nready = coro_nready;
2282 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
2283 3150
2284 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
2285 sv_setiv (sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
2286 SvREADONLY_on (sv); 3153 SvREADONLY_on (sv);
2287 } 3154 }
2288} 3155}
3156
3157void
3158terminate (...)
3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
3163schedule (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3176
3177void
3178cede (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
3181
3182void
3183cede_notself (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
2289 3192
2290void 3193void
2291_set_current (SV *current) 3194_set_current (SV *current)
2292 PROTOTYPE: $ 3195 PROTOTYPE: $
2293 CODE: 3196 CODE:
… …
2296 3199
2297void 3200void
2298_set_readyhook (SV *hook) 3201_set_readyhook (SV *hook)
2299 PROTOTYPE: $ 3202 PROTOTYPE: $
2300 CODE: 3203 CODE:
2301 LOCK;
2302 SvREFCNT_dec (coro_readyhook); 3204 SvREFCNT_dec (coro_readyhook);
2303 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304 UNLOCK;
2305 3206
2306int 3207int
2307prio (Coro::State coro, int newprio = 0) 3208prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$
2308 ALIAS: 3210 ALIAS:
2309 nice = 1 3211 nice = 1
2310 CODE: 3212 CODE:
2311{ 3213{
2312 RETVAL = coro->prio; 3214 RETVAL = coro->prio;
… …
2339 CODE: 3241 CODE:
2340 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
2341 OUTPUT: 3243 OUTPUT:
2342 RETVAL 3244 RETVAL
2343 3245
2344# for async_pool speedup
2345void 3246void
2346_pool_1 (SV *cb) 3247_pool_handler (...)
2347 CODE: 3248 CODE:
2348{ 3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2349 struct coro *coro = SvSTATE (coro_current);
2350 HV *hv = (HV *)SvRV (coro_current);
2351 AV *defav = GvAV (PL_defgv);
2352 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2353 AV *invoke_av;
2354 int i, len;
2355 3250
2356 if (!invoke) 3251void
3252async_pool (SV *cv, ...)
3253 PROTOTYPE: &@
3254 PPCODE:
3255{
3256 HV *hv = (HV *)av_pop (av_async_pool);
3257 AV *av = newAV ();
3258 SV *cb = ST (0);
3259 int i;
3260
3261 av_extend (av, items - 2);
3262 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264
3265 if ((SV *)hv == &PL_sv_undef)
2357 { 3266 {
2358 SV *old = PL_diehook; 3267 PUSHMARK (SP);
2359 PL_diehook = 0; 3268 EXTEND (SP, 2);
2360 SvREFCNT_dec (old); 3269 PUSHs (sv_Coro);
2361 croak ("\3async_pool terminate\2\n"); 3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2362 } 3276 }
2363 3277
2364 SvREFCNT_dec (coro->saved_deffh);
2365 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2366
2367 hv_store (hv, "desc", sizeof ("desc") - 1,
2368 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2369
2370 invoke_av = (AV *)SvRV (invoke);
2371 len = av_len (invoke_av);
2372
2373 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2374
2375 if (len > 0)
2376 { 3278 {
2377 av_fill (defav, len - 1); 3279 struct coro *coro = SvSTATE_hv (hv);
2378 for (i = 0; i < len; ++i) 3280
2379 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
2380 } 3285 }
2381 3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
2382 SvREFCNT_dec (invoke); 3292 SvREFCNT_dec (hv);
2383} 3293}
2384 3294
2385void 3295SV *
2386_pool_2 (SV *cb) 3296rouse_cb ()
3297 PROTOTYPE:
2387 CODE: 3298 CODE:
2388{ 3299 RETVAL = coro_new_rouse_cb (aTHX);
2389 struct coro *coro = SvSTATE (coro_current);
2390
2391 sv_setsv (cb, &PL_sv_undef);
2392
2393 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2394 coro->saved_deffh = 0;
2395
2396 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2397 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2398 {
2399 SV *old = PL_diehook;
2400 PL_diehook = 0;
2401 SvREFCNT_dec (old);
2402 croak ("\3async_pool terminate\2\n");
2403 }
2404
2405 av_clear (GvAV (PL_defgv));
2406 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2407 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2408
2409 coro->prio = 0;
2410
2411 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2412 api_trace (aTHX_ coro_current, 0);
2413
2414 av_push (av_async_pool, newSVsv (coro_current));
2415}
2416
2417#if 0
2418
2419void
2420_generator_call (...)
2421 PROTOTYPE: @
2422 PPCODE:
2423 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2424 xxxx
2425 abort ();
2426
2427SV *
2428gensub (SV *sub, ...)
2429 PROTOTYPE: &;@
2430 CODE:
2431{
2432 struct coro *coro;
2433 MAGIC *mg;
2434 CV *xcv;
2435 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2436 int i;
2437
2438 CvGV (ncv) = CvGV (cv);
2439 CvFILE (ncv) = CvFILE (cv);
2440
2441 Newz (0, coro, 1, struct coro);
2442 coro->args = newAV ();
2443 coro->flags = CF_NEW;
2444
2445 av_extend (coro->args, items - 1);
2446 for (i = 1; i < items; i++)
2447 av_push (coro->args, newSVsv (ST (i)));
2448
2449 CvISXSUB_on (ncv);
2450 CvXSUBANY (ncv).any_ptr = (void *)coro;
2451
2452 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2453
2454 CvXSUB (ncv) = CvXSUB (xcv);
2455 CvANON_on (ncv);
2456
2457 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2458 RETVAL = newRV_noinc ((SV *)ncv);
2459}
2460 OUTPUT: 3300 OUTPUT:
2461 RETVAL 3301 RETVAL
2462 3302
2463#endif
2464
2465
2466MODULE = Coro::State PACKAGE = Coro::AIO
2467
2468void 3303void
2469_get_state (SV *self) 3304rouse_wait (...)
3305 PROTOTYPE: ;$
2470 PPCODE: 3306 PPCODE:
2471{ 3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2472 AV *defav = GvAV (PL_defgv);
2473 AV *av = newAV ();
2474 int i;
2475 SV *data_sv = newSV (sizeof (struct io_state));
2476 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2477 SvCUR_set (data_sv, sizeof (struct io_state));
2478 SvPOK_only (data_sv);
2479 3308
2480 data->errorno = errno;
2481 data->laststype = PL_laststype;
2482 data->laststatval = PL_laststatval;
2483 data->statcache = PL_statcache;
2484 3309
2485 av_extend (av, AvFILLp (defav) + 1 + 1); 3310MODULE = Coro::State PACKAGE = PerlIO::cede
2486 3311
2487 for (i = 0; i <= AvFILLp (defav); ++i) 3312BOOT:
2488 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2489 3314
2490 av_push (av, data_sv);
2491 3315
2492 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3316MODULE = Coro::State PACKAGE = Coro::Semaphore
2493 3317
2494 api_ready (aTHX_ self); 3318SV *
2495} 3319new (SV *klass, SV *count = 0)
3320 CODE:
3321 RETVAL = sv_bless (
3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3323 GvSTASH (CvGV (cv))
3324 );
3325 OUTPUT:
3326 RETVAL
3327
3328# helper for Coro::Channel
3329SV *
3330_alloc (int count)
3331 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT:
3334 RETVAL
3335
3336SV *
3337count (SV *self)
3338 CODE:
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT:
3341 RETVAL
2496 3342
2497void 3343void
2498_set_state (SV *state) 3344up (SV *self, int adjust = 1)
2499 PROTOTYPE: $ 3345 ALIAS:
3346 adjust = 1
3347 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3349
3350void
3351down (...)
3352 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3359
3360void
3361try (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 SV *count_sv = AvARRAY (av)[0];
3366 IV count = SvIVX (count_sv);
3367
3368 if (count > 0)
3369 {
3370 --count;
3371 SvIVX (count_sv) = count;
3372 XSRETURN_YES;
3373 }
3374 else
3375 XSRETURN_NO;
3376}
3377
3378void
3379waiters (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
3384
3385 if (GIMME_V == G_SCALAR)
3386 XPUSHs (sv_2mortal (newSViv (wcount)));
3387 else
3388 {
3389 int i;
3390 EXTEND (SP, wcount);
3391 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 }
3394}
3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
2500 PPCODE: 3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
2501{ 3416{
2502 AV *av = (AV *)SvRV (state); 3417 AV *av = (AV *)SvRV (self);
2503 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
2504 int i; 3419}
2505 3420
2506 errno = data->errorno; 3421void
2507 PL_laststype = data->laststype; 3422send (SV *self)
2508 PL_laststatval = data->laststatval; 3423 CODE:
2509 PL_statcache = data->statcache; 3424{
3425 AV *av = (AV *)SvRV (self);
2510 3426
2511 EXTEND (SP, AvFILLp (av)); 3427 if (AvFILLp (av))
2512 for (i = 0; i < AvFILLp (av); ++i) 3428 coro_signal_wake (aTHX_ av, 1);
2513 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2514} 3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
2515 3439
2516 3440
2517MODULE = Coro::State PACKAGE = Coro::AnyEvent 3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518 3442
2519BOOT: 3443BOOT:
2520 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521 3445
2522SV * 3446void
2523_schedule (...) 3447_schedule (...)
2524 PROTOTYPE: @
2525 CODE: 3448 CODE:
2526{ 3449{
2527 static int incede; 3450 static int incede;
2528 3451
2529 api_cede_notself (aTHX); 3452 api_cede_notself (aTHX);
… …
2535 sv_setsv (sv_activity, &PL_sv_undef); 3458 sv_setsv (sv_activity, &PL_sv_undef);
2536 if (coro_nready >= incede) 3459 if (coro_nready >= incede)
2537 { 3460 {
2538 PUSHMARK (SP); 3461 PUSHMARK (SP);
2539 PUTBACK; 3462 PUTBACK;
2540 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2541 SPAGAIN;
2542 } 3464 }
2543 3465
2544 --incede; 3466 --incede;
2545} 3467}
2546 3468
2547 3469
2548MODULE = Coro::State PACKAGE = PerlIO::cede 3470MODULE = Coro::State PACKAGE = Coro::AIO
2549 3471
2550BOOT: 3472void
2551 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
2552 3482

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