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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 1.326 by root, Mon Nov 24 04:56:38 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;
253#define VAR(name,type) type name; 252#define VAR(name,type) type name;
… …
257 256
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 257#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 258
260/* this is a structure representing a perl-level coroutine */ 259/* this is a structure representing a perl-level coroutine */
261struct coro { 260struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 261 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 262 coro_cctx *cctx;
264 263
265 /* process data */ 264 /* state data */
265 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 267 perl_slots *slot; /* basically the saved sp */
268 268
269 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 270 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 271 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 272 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 273 HV *hv; /* the perl hash associated with this coro, if any */
274 void (*on_destroy)(pTHX_ struct coro *coro);
273 275
274 /* statistics */ 276 /* statistics */
275 int usecount; /* number of transfers to this coro */ 277 int usecount; /* number of transfers to this coro */
276 278
277 /* coro process data */ 279 /* coro process data */
278 int prio; 280 int prio;
279 SV *throw; /* exception to be thrown */ 281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
280 283
281 /* async_pool */ 284 /* async_pool */
282 SV *saved_deffh; 285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
283 288
284 /* linked list */ 289 /* linked list */
285 struct coro *next, *prev; 290 struct coro *next, *prev;
286}; 291};
287 292
288typedef struct coro *Coro__State; 293typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 294typedef struct coro *Coro__State_or_hashref;
295
296/* the following variables are effectively part of the perl context */
297/* and get copied between struct coro and these variables */
298/* the mainr easonw e don't support windows process emulation */
299static struct CoroSLF slf_frame; /* the current slf frame */
290 300
291/** Coro ********************************************************************/ 301/** Coro ********************************************************************/
292 302
293#define PRIO_MAX 3 303#define PRIO_MAX 3
294#define PRIO_HIGH 1 304#define PRIO_HIGH 1
… …
299 309
300/* for Coro.pm */ 310/* for Coro.pm */
301static SV *coro_current; 311static SV *coro_current;
302static SV *coro_readyhook; 312static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
314static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 315static struct coro *coro_first;
305#define coro_nready coroapi.nready 316#define coro_nready coroapi.nready
306 317
307/** lowlevel stuff **********************************************************/ 318/** lowlevel stuff **********************************************************/
308 319
… …
334 get_hv (name, create); 345 get_hv (name, create);
335#endif 346#endif
336 return get_hv (name, create); 347 return get_hv (name, create);
337} 348}
338 349
350/* may croak */
351INLINE CV *
352coro_sv_2cv (pTHX_ SV *sv)
353{
354 HV *st;
355 GV *gvp;
356 return sv_2cv (sv, &st, &gvp, 0);
357}
358
339static AV * 359static AV *
340coro_clone_padlist (pTHX_ CV *cv) 360coro_derive_padlist (pTHX_ CV *cv)
341{ 361{
342 AV *padlist = CvPADLIST (cv); 362 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 363 AV *newpadlist, *newpad;
344 364
345 newpadlist = newAV (); 365 newpadlist = newAV ();
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 415 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 416
397 return 0; 417 return 0;
398} 418}
399 419
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 420#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 421#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 422
403static MGVTBL coro_cv_vtbl = { 423static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 424 0, 0, 0, 0,
405 coro_cv_free 425 coro_cv_free
406}; 426};
407 427
428#define CORO_MAGIC_NN(sv, type) \
429 (expect_true (SvMAGIC (sv)->mg_type == type) \
430 ? SvMAGIC (sv) \
431 : mg_find (sv, type))
432
408#define CORO_MAGIC(sv, type) \ 433#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 434 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 435 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 436 : 0)
414 437
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 438#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) 439#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 440
418INLINE struct coro * 441INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 442SvSTATE_ (pTHX_ SV *coro)
420{ 443{
421 HV *stash; 444 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 461 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 462 return (struct coro *)mg->mg_ptr;
440} 463}
441 464
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 465#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
466
467/* faster than SvSTATE, but expects a coroutine hv */
468#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
469#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 470
444/* the next two functions merely cache the padlists */ 471/* the next two functions merely cache the padlists */
445static void 472static void
446get_padlist (pTHX_ CV *cv) 473get_padlist (pTHX_ CV *cv)
447{ 474{
… …
453 else 480 else
454 { 481 {
455#if CORO_PREFER_PERL_FUNCTIONS 482#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 483 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 484 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 485 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 486 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 487 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 488 SvREFCNT_dec (cp);
462#else 489#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 490 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 491#endif
465 } 492 }
466} 493}
467 494
468static void 495static void
… …
514 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
515 } 542 }
516 543
517 PUTBACK; 544 PUTBACK;
518 } 545 }
546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
519} 549}
520 550
521static void 551static void
522save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
523{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
524 { 557 {
525 dSP; 558 dSP;
526 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 628 #undef VAR
596 } 629 }
597} 630}
598 631
599/* 632/*
600 * allocate various perl stacks. This is an exact copy 633 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
604 */ 637 */
605#if CORO_PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
607#else 640#else
608static void 641static void
609coro_init_stacks (pTHX) 642coro_init_stacks (pTHX)
610{ 643{
611 PL_curstackinfo = new_stackinfo(32, 8); 644 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 708 Safefree (PL_retstack);
676#endif 709#endif
677} 710}
678 711
712#define CORO_RSS \
713 rss += sizeof (SYM (curstackinfo)); \
714 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
715 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
716 rss += SYM (tmps_max) * sizeof (SV *); \
717 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
718 rss += SYM (scopestack_max) * sizeof (I32); \
719 rss += SYM (savestack_max) * sizeof (ANY);
720
679static size_t 721static size_t
680coro_rss (pTHX_ struct coro *coro) 722coro_rss (pTHX_ struct coro *coro)
681{ 723{
682 size_t rss = sizeof (*coro); 724 size_t rss = sizeof (*coro);
683 725
684 if (coro->mainstack) 726 if (coro->mainstack)
685 { 727 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 728 if (coro->flags & CF_RUNNING)
690 { 729 {
691 slot = &tmp_slot; 730 #define SYM(sym) PL_ ## sym
692 731 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 732 #undef SYM
696 } 733 }
697 else 734 else
698 slot = coro->slot;
699
700 if (slot)
701 { 735 {
702 rss += sizeof (slot->curstackinfo); 736 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 #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 } 739 }
714 } 740 }
715 741
716 return rss; 742 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} 743}
745 744
746/** coroutine stack handling ************************************************/ 745/** coroutine stack handling ************************************************/
747 746
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 747static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 833
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 834 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 835}
837 836
838static void 837static void
838prepare_nop (pTHX_ struct coro_transfer_args *ta)
839{
840 /* kind of mega-hacky, but works */
841 ta->next = ta->prev = (struct coro *)ta;
842}
843
844static int
845slf_check_nop (pTHX_ struct CoroSLF *frame)
846{
847 return 0;
848}
849
850static int
851slf_check_repeat (pTHX_ struct CoroSLF *frame)
852{
853 return 1;
854}
855
856static UNOP coro_setup_op;
857
858static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 859coro_setup (pTHX_ struct coro *coro)
840{ 860{
841 /* 861 /*
842 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
843 */ 863 */
… …
870 { 890 {
871 dSP; 891 dSP;
872 UNOP myop; 892 UNOP myop;
873 893
874 Zero (&myop, 1, UNOP); 894 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
877 898
878 PUSHMARK (SP); 899 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 900 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 901 PUTBACK;
881 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 904 }
885 905
886 /* this newly created coroutine might be run on an existing cctx which most 906 /* 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, 907 * 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 */ 908 */
890 SLF_HEAD; 909 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
910 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
911
912 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
913 coro_setup_op.op_next = PL_op;
914 coro_setup_op.op_type = OP_ENTERSUB;
915 coro_setup_op.op_ppaddr = pp_slf;
916 /* no flags etc. required, as an init function won't be called */
917
918 PL_op = (OP *)&coro_setup_op;
919
920 /* copy throw, in case it was set before coro_setup */
921 CORO_THROW = coro->except;
891} 922}
892 923
893static void 924static void
894coro_destruct (pTHX_ struct coro *coro) 925coro_destruct (pTHX_ struct coro *coro)
895{ 926{
… …
919 950
920 SvREFCNT_dec (PL_diehook); 951 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 952 SvREFCNT_dec (PL_warnhook);
922 953
923 SvREFCNT_dec (coro->saved_deffh); 954 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
925 958
926 coro_destruct_stacks (aTHX); 959 coro_destruct_stacks (aTHX);
927} 960}
928 961
929INLINE void 962INLINE void
… …
939static int 972static int
940runops_trace (pTHX) 973runops_trace (pTHX)
941{ 974{
942 COP *oldcop = 0; 975 COP *oldcop = 0;
943 int oldcxix = -2; 976 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 977
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 979 {
949 PERL_ASYNC_CHECK (); 980 PERL_ASYNC_CHECK ();
950 981
951 if (cctx->flags & CC_TRACE_ALL) 982 if (cctx_current->flags & CC_TRACE_ALL)
952 { 983 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 984 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 985 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 987 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 988 AV *av = newAV (); /* return values */
958 SV **cb; 989 SV **cb;
… …
995 1026
996 if (PL_curcop != &PL_compiling) 1027 if (PL_curcop != &PL_compiling)
997 { 1028 {
998 SV **cb; 1029 SV **cb;
999 1030
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1032 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1034
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1036 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1037 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1038 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1039 SV *fullname = sv_2mortal (newSV (0));
1010 1040
1011 if (isGV (gv)) 1041 if (isGV (gv))
… …
1016 SAVETMPS; 1046 SAVETMPS;
1017 EXTEND (SP, 3); 1047 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1048 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1049 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1050 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1051 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1052 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1053 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); 1054 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1055 SPAGAIN;
1026 FREETMPS; 1056 FREETMPS;
… …
1029 } 1059 }
1030 1060
1031 oldcxix = cxstack_ix; 1061 oldcxix = cxstack_ix;
1032 } 1062 }
1033 1063
1034 if (cctx->flags & CC_TRACE_LINE) 1064 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1065 {
1036 dSP; 1066 dSP;
1037 1067
1038 PL_runops = RUNOPS_DEFAULT; 1068 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1069 ENTER;
… …
1058 1088
1059 TAINT_NOT; 1089 TAINT_NOT;
1060 return 0; 1090 return 0;
1061} 1091}
1062 1092
1093static struct CoroSLF cctx_ssl_frame;
1094
1063static void 1095static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1097{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1098 ta->prev = 0;
1068} 1099}
1069 1100
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1101static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1103{
1073/* also initialises PL_top_env */ 1104 *frame = cctx_ssl_frame;
1105
1106 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1107}
1108
1109/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1110static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1111cctx_prepare (pTHX)
1076{ 1112{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
1081 1114
1082 if (cctx->flags & CC_TRACE) 1115 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1116 PL_runops = runops_trace;
1084 1117
1085 Zero (&myop, 1, UNOP); 1118 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1119 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1120 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1121 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1122
1089 PUSHMARK (SP); 1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1124 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1125
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1126 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1127 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1128}
1098 1129
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1130/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1131INLINE void
1101transfer_tail (pTHX) 1132transfer_tail (pTHX)
1102{ 1133{
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); 1134 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} 1135}
1119 1136
1120/* 1137/*
1121 * this is a _very_ stripped down perl interpreter ;) 1138 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1139 */
… …
1129# endif 1146# endif
1130#endif 1147#endif
1131 { 1148 {
1132 dTHX; 1149 dTHX;
1133 1150
1134 /* we are the alternative tail to pp_set_stacklevel */ 1151 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1152 /* 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; 1153 /* PL_nop = PL_nop->op_next */
1140 1154
1141 /* inject a fake subroutine call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1156 cctx_prepare (aTHX);
1143 1157
1144 /* cctx_run is the alternative tail of transfer() */ 1158 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1159 transfer_tail (aTHX);
1146 1160
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1161 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1163 perl_run (PL_curinterp);
1164 /*
1165 * Unfortunately, there is no way to get at the return values of the
1166 * coro body here, as perl_run destroys these
1167 */
1150 1168
1151 /* 1169 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1170 * 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) 1171 * 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 1172 * reason for perl_run to return. We try to exit by jumping to the
… …
1238cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
1239{ 1257{
1240 if (!cctx) 1258 if (!cctx)
1241 return; 1259 return;
1242 1260
1261 assert (cctx != cctx_current);//D temporary
1262
1243 --cctx_count; 1263 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1264 coro_destroy (&cctx->cctx);
1245 1265
1246 /* coro_transfer creates new, empty cctx's */ 1266 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1267 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1306 1326
1307static void 1327static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1310 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1311 { 1333 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 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"); 1335 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1314 1336
1315 if (expect_false (next->flags & CF_RUNNING)) 1337 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"); 1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1339
1318 if (expect_false (next->flags & CF_DESTROYED)) 1340 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"); 1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1342
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1343#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1344 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"); 1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1346#endif
1325 } 1347 }
1326} 1348}
1327 1349
1328/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1329static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1353{
1332 dSTACKLEVEL; 1354 dSTACKLEVEL;
1333 1355
1334 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1357 if (expect_false (!prev))
1336 { 1358 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1359 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1361 }
1340 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1341 { 1363 {
1342 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
1343 1365
1344 if (expect_false (prev->flags & CF_NEW)) 1366 if (expect_false (prev->flags & CF_NEW))
1345 { 1367 {
1346 /* create a new empty/source context */ 1368 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
1350 } 1371 }
1351 1372
1352 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1374 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1375
1357 /* first get rid of the old state */ 1376 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1377 save_perl (aTHX_ prev);
1359 1378
1360 if (expect_false (next->flags & CF_NEW)) 1379 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1384 coro_setup (aTHX_ next);
1366 } 1385 }
1367 else 1386 else
1368 load_perl (aTHX_ next); 1387 load_perl (aTHX_ next);
1369 1388
1370 prev__cctx = prev->cctx; 1389 assert (!prev->cctx);//D temporary
1371 1390
1372 /* possibly untie and reuse the cctx */ 1391 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1392 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1393 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1394 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1395 && !force_cctx
1377 )) 1396 ))
1378 { 1397 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1398 /* 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)); 1399 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1400
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 */ 1401 /* 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 */ 1402 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1404 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1405 next->cctx = cctx_get (aTHX);
1389 1406
1390 cctx_put (prev__cctx); 1407 cctx_put (cctx_current);
1391 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1392 1411
1393 ++next->usecount; 1412 ++next->usecount;
1394 1413
1395 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1416
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1417 next->cctx = 0;
1399 transfer_next = next;
1400 1418
1401 if (expect_false (prev__cctx != next->cctx)) 1419 if (expect_false (cctx_prev != cctx_current))
1402 { 1420 {
1403 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1424 }
1407 1425
1408 transfer_tail (aTHX); 1426 transfer_tail (aTHX);
1409 } 1427 }
1410} 1428}
… …
1417static int 1435static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1437{
1420 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
1421 return 0; 1439 return 0;
1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1422 1443
1423 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1424 1445
1425 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
1426 { 1447 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1449 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1450 --coro_nready;
1431 UNLOCK;
1432 } 1451 }
1433 else 1452 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1453 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1454
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1456 {
1438 struct coro temp; 1457 struct coro temp;
1439 1458
1440 if (coro->flags & CF_RUNNING) 1459 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1460
1443 save_perl (aTHX_ &temp); 1461 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1462 load_perl (aTHX_ coro);
1445 1463
1446 coro_destruct (aTHX_ coro); 1464 coro_destruct (aTHX_ coro);
… …
1449 1467
1450 coro->slot = 0; 1468 coro->slot = 0;
1451 } 1469 }
1452 1470
1453 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1455 1475
1456 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1459 1479
… …
1497# define MGf_DUP 0 1517# define MGf_DUP 0
1498#endif 1518#endif
1499}; 1519};
1500 1520
1501static void 1521static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1522prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1523{
1504 ta->prev = SvSTATE (prev_sv); 1524 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1525 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1526 TRANSFER_CHECK (*ta);
1507} 1527}
1508 1528
1509static void 1529static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1530api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1531{
1512 struct transfer_args ta; 1532 struct coro_transfer_args ta;
1513 1533
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1516} 1536}
1517 1537
1538/*****************************************************************************/
1539/* gensub: simple closure generation utility */
1540
1541#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1542
1543/* create a closure from XS, returns a code reference */
1544/* the arg can be accessed via GENSUB_ARG from the callback */
1545/* the callback must use dXSARGS/XSRETURN */
1546static SV *
1547gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1548{
1549 CV *cv = (CV *)newSV (0);
1550
1551 sv_upgrade ((SV *)cv, SVt_PVCV);
1552
1553 CvANON_on (cv);
1554 CvISXSUB_on (cv);
1555 CvXSUB (cv) = xsub;
1556 GENSUB_ARG = arg;
1557
1558 return newRV_noinc ((SV *)cv);
1559}
1560
1518/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1519 1562
1520static void 1563INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1564coro_enq (pTHX_ struct coro *coro)
1522{ 1565{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1566 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1567}
1525 1568
1526static SV * 1569INLINE SV *
1527coro_deq (pTHX) 1570coro_deq (pTHX)
1528{ 1571{
1529 int prio; 1572 int prio;
1530 1573
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1540{ 1583{
1541 struct coro *coro; 1584 struct coro *coro;
1542 SV *sv_hook; 1585 SV *sv_hook;
1543 void (*xs_hook)(void); 1586 void (*xs_hook)(void);
1544 1587
1545 if (SvROK (coro_sv))
1546 coro_sv = SvRV (coro_sv);
1547
1548 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
1549 1589
1550 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
1551 return 0; 1591 return 0;
1552 1592
1553 coro->flags |= CF_READY; 1593 coro->flags |= CF_READY;
1554 1594
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1595 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1596 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1597
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1598 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1599 ++coro_nready;
1562 1600
1563 UNLOCK;
1564
1565 if (sv_hook) 1601 if (sv_hook)
1566 { 1602 {
1567 dSP; 1603 dSP;
1568 1604
1569 ENTER; 1605 ENTER;
1570 SAVETMPS; 1606 SAVETMPS;
1571 1607
1572 PUSHMARK (SP); 1608 PUSHMARK (SP);
1573 PUTBACK; 1609 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1611
1577 FREETMPS; 1612 FREETMPS;
1578 LEAVE; 1613 LEAVE;
1579 } 1614 }
1580 1615
… …
1588api_is_ready (pTHX_ SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
1589{ 1624{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1626}
1592 1627
1628/* expects to own a reference to next->hv */
1593INLINE void 1629INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1595{ 1631{
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); 1632 SV *prev_sv = SvRV (coro_current);
1633
1640 ta->prev = SvSTATE (prev_sv); 1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1641 TRANSFER_CHECK (*ta); 1637 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1638
1643 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1639 SvRV_set (coro_current, (SV *)next->hv);
1645 1640
1646 LOCK;
1647 free_coro_mortal (aTHX); 1641 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1642 coro_mortal = prev_sv;
1649 UNLOCK; 1643}
1644
1645static void
1646prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1647{
1648 for (;;)
1649 {
1650 SV *next_sv = coro_deq (aTHX);
1651
1652 if (expect_true (next_sv))
1653 {
1654 struct coro *next = SvSTATE_hv (next_sv);
1655
1656 /* cannot transfer to destroyed coros, skip and look for next */
1657 if (expect_false (next->flags & CF_DESTROYED))
1658 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1659 else
1660 {
1661 next->flags &= ~CF_READY;
1662 --coro_nready;
1663
1664 prepare_schedule_to (aTHX_ ta, next);
1665 break;
1666 }
1667 }
1668 else
1669 {
1670 /* nothing to schedule: call the idle handler */
1671 if (SvROK (sv_idle)
1672 && SvOBJECT (SvRV (sv_idle)))
1673 {
1674 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1675 api_ready (SvRV (sv_idle));
1676 --coro_nready;
1677 }
1678 else
1679 {
1680 dSP;
1681
1682 ENTER;
1683 SAVETMPS;
1684
1685 PUSHMARK (SP);
1686 PUTBACK;
1687 call_sv (sv_idle, G_VOID | G_DISCARD);
1688
1689 FREETMPS;
1690 LEAVE;
1691 }
1692 }
1693 }
1650} 1694}
1651 1695
1652INLINE void 1696INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1698{
1655 api_ready (aTHX_ coro_current); 1699 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1700 prepare_schedule (aTHX_ ta);
1657} 1701}
1658 1702
1659static void 1703INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1704prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1705{
1662 SV *prev = SvRV (coro_current); 1706 SV *prev = SvRV (coro_current);
1663 1707
1664 if (coro_nready) 1708 if (coro_nready)
1665 { 1709 {
1666 prepare_schedule (aTHX_ ta); 1710 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1711 api_ready (aTHX_ prev);
1668 } 1712 }
1669 else 1713 else
1670 ta->prev = ta->next = SvSTATE (prev); 1714 prepare_nop (aTHX_ ta);
1671} 1715}
1672 1716
1673static void 1717static void
1674api_schedule (pTHX) 1718api_schedule (pTHX)
1675{ 1719{
1676 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1677 1721
1678 prepare_schedule (aTHX_ &ta); 1722 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1680} 1724}
1681 1725
1726static void
1727api_schedule_to (pTHX_ SV *coro_sv)
1728{
1729 struct coro_transfer_args ta;
1730 struct coro *next = SvSTATE (coro_sv);
1731
1732 SvREFCNT_inc_NN (coro_sv);
1733 prepare_schedule_to (aTHX_ &ta, next);
1734}
1735
1682static int 1736static int
1683api_cede (pTHX) 1737api_cede (pTHX)
1684{ 1738{
1685 struct transfer_args ta; 1739 struct coro_transfer_args ta;
1686 1740
1687 prepare_cede (aTHX_ &ta); 1741 prepare_cede (aTHX_ &ta);
1688 1742
1689 if (expect_true (ta.prev != ta.next)) 1743 if (expect_true (ta.prev != ta.next))
1690 { 1744 {
… …
1698static int 1752static int
1699api_cede_notself (pTHX) 1753api_cede_notself (pTHX)
1700{ 1754{
1701 if (coro_nready) 1755 if (coro_nready)
1702 { 1756 {
1703 struct transfer_args ta; 1757 struct coro_transfer_args ta;
1704 1758
1705 prepare_cede_notself (aTHX_ &ta); 1759 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1760 TRANSFER (ta, 1);
1707 return 1; 1761 return 1;
1708 } 1762 }
… …
1713static void 1767static void
1714api_trace (pTHX_ SV *coro_sv, int flags) 1768api_trace (pTHX_ SV *coro_sv, int flags)
1715{ 1769{
1716 struct coro *coro = SvSTATE (coro_sv); 1770 struct coro *coro = SvSTATE (coro_sv);
1717 1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1718 if (flags & CC_TRACE) 1775 if (flags & CC_TRACE)
1719 { 1776 {
1720 if (!coro->cctx) 1777 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1778 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1779 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1724 1781
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1783 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1785 {
… …
1733 else 1790 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1791 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1792 }
1736} 1793}
1737 1794
1738#if 0 1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro)
1797{
1798 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1799 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1800
1801 if (on_destroyp)
1802 {
1803 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1804
1805 while (AvFILLp (on_destroy) >= 0)
1806 {
1807 dSP; /* don't disturb outer sp */
1808 SV *cb = av_pop (on_destroy);
1809
1810 PUSHMARK (SP);
1811
1812 if (statusp)
1813 {
1814 int i;
1815 AV *status = (AV *)SvRV (*statusp);
1816 EXTEND (SP, AvFILLp (status) + 1);
1817
1818 for (i = 0; i <= AvFILLp (status); ++i)
1819 PUSHs (AvARRAY (status)[i]);
1820 }
1821
1822 PUTBACK;
1823 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1824 }
1825 }
1826}
1827
1828static void
1829slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1830{
1831 int i;
1832 HV *hv = (HV *)SvRV (coro_current);
1833 AV *av = newAV ();
1834
1835 av_extend (av, items - 1);
1836 for (i = 0; i < items; ++i)
1837 av_push (av, SvREFCNT_inc_NN (arg [i]));
1838
1839 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1840
1841 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1842 api_ready (aTHX_ sv_manager);
1843
1844 frame->prepare = prepare_schedule;
1845 frame->check = slf_check_repeat;
1846}
1847
1848/*****************************************************************************/
1849/* async pool handler */
1850
1739static int 1851static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1852slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741{ 1853{
1742 AV *padlist; 1854 HV *hv = (HV *)SvRV (coro_current);
1743 AV *av = (AV *)mg->mg_obj; 1855 struct coro *coro = (struct coro *)frame->data;
1744 1856
1745 abort (); 1857 if (!coro->invoke_cb)
1858 return 1; /* loop till we have invoke */
1859 else
1860 {
1861 hv_store (hv, "desc", sizeof ("desc") - 1,
1862 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1863
1864 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1865
1866 {
1867 dSP;
1868 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1869 PUTBACK;
1870 }
1871
1872 SvREFCNT_dec (GvAV (PL_defgv));
1873 GvAV (PL_defgv) = coro->invoke_av;
1874 coro->invoke_av = 0;
1875
1876 return 0;
1877 }
1878}
1879
1880static void
1881slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1882{
1883 HV *hv = (HV *)SvRV (coro_current);
1884 struct coro *coro = SvSTATE_hv ((SV *)hv);
1885
1886 if (expect_true (coro->saved_deffh))
1887 {
1888 /* subsequent iteration */
1889 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1890 coro->saved_deffh = 0;
1891
1892 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1893 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1894 {
1895 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1896 coro->invoke_av = newAV ();
1897
1898 frame->prepare = prepare_nop;
1899 }
1900 else
1901 {
1902 av_clear (GvAV (PL_defgv));
1903 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1904
1905 coro->prio = 0;
1906
1907 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908 api_trace (aTHX_ coro_current, 0);
1909
1910 frame->prepare = prepare_schedule;
1911 av_push (av_async_pool, SvREFCNT_inc (hv));
1912 }
1913 }
1914 else
1915 {
1916 /* first iteration, simply fall through */
1917 frame->prepare = prepare_nop;
1918 }
1919
1920 frame->check = slf_check_pool_handler;
1921 frame->data = (void *)coro;
1922}
1923
1924/*****************************************************************************/
1925/* rouse callback */
1926
1927#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1928
1929static void
1930coro_rouse_callback (pTHX_ CV *cv)
1931{
1932 dXSARGS;
1933 SV *data = (SV *)GENSUB_ARG;
1934
1935 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1936 {
1937 /* first call, set args */
1938 AV *av = newAV ();
1939 SV *coro = SvRV (data);
1940
1941 SvRV_set (data, (SV *)av);
1942 api_ready (aTHX_ coro);
1943 SvREFCNT_dec (coro);
1944
1945 /* better take a full copy of the arguments */
1946 while (items--)
1947 av_store (av, items, newSVsv (ST (items)));
1948 }
1949
1950 XSRETURN_EMPTY;
1951}
1952
1953static int
1954slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1955{
1956 SV *data = (SV *)frame->data;
1957
1958 if (CORO_THROW)
1959 return 0;
1960
1961 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1962 return 1;
1963
1964 /* now push all results on the stack */
1965 {
1966 dSP;
1967 AV *av = (AV *)SvRV (data);
1968 int i;
1969
1970 EXTEND (SP, AvFILLp (av) + 1);
1971 for (i = 0; i <= AvFILLp (av); ++i)
1972 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1973
1974 /* we have stolen the elements, so ste length to zero and free */
1975 AvFILLp (av) = -1;
1976 av_undef (av);
1977
1978 PUTBACK;
1979 }
1746 1980
1747 return 0; 1981 return 0;
1748} 1982}
1749 1983
1750static MGVTBL coro_gensub_vtbl = { 1984static void
1751 0, 0, 0, 0, 1985slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1986{
1753}; 1987 SV *cb;
1754#endif 1988
1989 if (items)
1990 cb = arg [0];
1991 else
1992 {
1993 struct coro *coro = SvSTATE_current;
1994
1995 if (!coro->rouse_cb)
1996 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1997
1998 cb = sv_2mortal (coro->rouse_cb);
1999 coro->rouse_cb = 0;
2000 }
2001
2002 if (!SvROK (cb)
2003 || SvTYPE (SvRV (cb)) != SVt_PVCV
2004 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2005 croak ("Coro::rouse_wait called with illegal callback argument,");
2006
2007 {
2008 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2009 SV *data = (SV *)GENSUB_ARG;
2010
2011 frame->data = (void *)data;
2012 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2013 frame->check = slf_check_rouse_wait;
2014 }
2015}
2016
2017static SV *
2018coro_new_rouse_cb (pTHX)
2019{
2020 HV *hv = (HV *)SvRV (coro_current);
2021 struct coro *coro = SvSTATE_hv (hv);
2022 SV *data = newRV_inc ((SV *)hv);
2023 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2024
2025 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2026 SvREFCNT_dec (data); /* magicext increases the refcount */
2027
2028 SvREFCNT_dec (coro->rouse_cb);
2029 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2030
2031 return cb;
2032}
2033
2034/*****************************************************************************/
2035/* schedule-like-function opcode (SLF) */
2036
2037static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2038static const CV *slf_cv;
2039static SV **slf_argv;
2040static int slf_argc, slf_arga; /* count, allocated */
2041static I32 slf_ax; /* top of stack, for restore */
2042
2043/* this restores the stack in the case we patched the entersub, to */
2044/* recreate the stack frame as perl will on following calls */
2045/* since entersub cleared the stack */
2046static OP *
2047pp_restore (pTHX)
2048{
2049 int i;
2050 SV **SP = PL_stack_base + slf_ax;
2051
2052 PUSHMARK (SP);
2053
2054 EXTEND (SP, slf_argc + 1);
2055
2056 for (i = 0; i < slf_argc; ++i)
2057 PUSHs (sv_2mortal (slf_argv [i]));
2058
2059 PUSHs ((SV *)CvGV (slf_cv));
2060
2061 RETURNOP (slf_restore.op_first);
2062}
2063
2064static void
2065slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2066{
2067 SV **arg = (SV **)slf_frame.data;
2068
2069 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2070}
2071
2072static void
2073slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 if (items != 2)
2076 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2077
2078 frame->prepare = slf_prepare_transfer;
2079 frame->check = slf_check_nop;
2080 frame->data = (void *)arg; /* let's hope it will stay valid */
2081}
2082
2083static void
2084slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 frame->prepare = prepare_schedule;
2087 frame->check = slf_check_nop;
2088}
2089
2090static void
2091slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2092{
2093 struct coro *next = (struct coro *)slf_frame.data;
2094
2095 SvREFCNT_inc_NN (next->hv);
2096 prepare_schedule_to (aTHX_ ta, next);
2097}
2098
2099static void
2100slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 if (!items)
2103 croak ("Coro::schedule_to expects a coroutine argument, caught");
2104
2105 frame->data = (void *)SvSTATE (arg [0]);
2106 frame->prepare = slf_prepare_schedule_to;
2107 frame->check = slf_check_nop;
2108}
2109
2110static void
2111slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 api_ready (aTHX_ SvRV (coro_current));
2114
2115 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2116}
2117
2118static void
2119slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2120{
2121 frame->prepare = prepare_cede;
2122 frame->check = slf_check_nop;
2123}
2124
2125static void
2126slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2127{
2128 frame->prepare = prepare_cede_notself;
2129 frame->check = slf_check_nop;
2130}
2131
2132/*
2133 * these not obviously related functions are all rolled into one
2134 * function to increase chances that they all will call transfer with the same
2135 * stack offset
2136 * SLF stands for "schedule-like-function".
2137 */
2138static OP *
2139pp_slf (pTHX)
2140{
2141 I32 checkmark; /* mark SP to see how many elements check has pushed */
2142
2143 /* set up the slf frame, unless it has already been set-up */
2144 /* the latter happens when a new coro has been started */
2145 /* or when a new cctx was attached to an existing coroutine */
2146 if (expect_true (!slf_frame.prepare))
2147 {
2148 /* first iteration */
2149 dSP;
2150 SV **arg = PL_stack_base + TOPMARK + 1;
2151 int items = SP - arg; /* args without function object */
2152 SV *gv = *sp;
2153
2154 /* do a quick consistency check on the "function" object, and if it isn't */
2155 /* for us, divert to the real entersub */
2156 if (SvTYPE (gv) != SVt_PVGV
2157 || !GvCV (gv)
2158 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2159 return PL_ppaddr[OP_ENTERSUB](aTHX);
2160
2161 if (!(PL_op->op_flags & OPf_STACKED))
2162 {
2163 /* ampersand-form of call, use @_ instead of stack */
2164 AV *av = GvAV (PL_defgv);
2165 arg = AvARRAY (av);
2166 items = AvFILLp (av) + 1;
2167 }
2168
2169 /* now call the init function, which needs to set up slf_frame */
2170 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2171 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2172
2173 /* pop args */
2174 SP = PL_stack_base + POPMARK;
2175
2176 PUTBACK;
2177 }
2178
2179 /* now that we have a slf_frame, interpret it! */
2180 /* we use a callback system not to make the code needlessly */
2181 /* complicated, but so we can run multiple perl coros from one cctx */
2182
2183 do
2184 {
2185 struct coro_transfer_args ta;
2186
2187 slf_frame.prepare (aTHX_ &ta);
2188 TRANSFER (ta, 0);
2189
2190 checkmark = PL_stack_sp - PL_stack_base;
2191 }
2192 while (slf_frame.check (aTHX_ &slf_frame));
2193
2194 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2195
2196 /* exception handling */
2197 if (expect_false (CORO_THROW))
2198 {
2199 SV *exception = sv_2mortal (CORO_THROW);
2200
2201 CORO_THROW = 0;
2202 sv_setsv (ERRSV, exception);
2203 croak (0);
2204 }
2205
2206 /* return value handling - mostly like entersub */
2207 /* make sure we put something on the stack in scalar context */
2208 if (GIMME_V == G_SCALAR)
2209 {
2210 dSP;
2211 SV **bot = PL_stack_base + checkmark;
2212
2213 if (sp == bot) /* too few, push undef */
2214 bot [1] = &PL_sv_undef;
2215 else if (sp != bot + 1) /* too many, take last one */
2216 bot [1] = *sp;
2217
2218 SP = bot + 1;
2219
2220 PUTBACK;
2221 }
2222
2223 return NORMAL;
2224}
2225
2226static void
2227api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2228{
2229 int i;
2230 SV **arg = PL_stack_base + ax;
2231 int items = PL_stack_sp - arg + 1;
2232
2233 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2234
2235 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2236 && PL_op->op_ppaddr != pp_slf)
2237 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2238
2239 CvFLAGS (cv) |= CVf_SLF;
2240 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2241 slf_cv = cv;
2242
2243 /* we patch the op, and then re-run the whole call */
2244 /* we have to put the same argument on the stack for this to work */
2245 /* and this will be done by pp_restore */
2246 slf_restore.op_next = (OP *)&slf_restore;
2247 slf_restore.op_type = OP_CUSTOM;
2248 slf_restore.op_ppaddr = pp_restore;
2249 slf_restore.op_first = PL_op;
2250
2251 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2252
2253 if (PL_op->op_flags & OPf_STACKED)
2254 {
2255 if (items > slf_arga)
2256 {
2257 slf_arga = items;
2258 free (slf_argv);
2259 slf_argv = malloc (slf_arga * sizeof (SV *));
2260 }
2261
2262 slf_argc = items;
2263
2264 for (i = 0; i < items; ++i)
2265 slf_argv [i] = SvREFCNT_inc (arg [i]);
2266 }
2267 else
2268 slf_argc = 0;
2269
2270 PL_op->op_ppaddr = pp_slf;
2271 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2272
2273 PL_op = (OP *)&slf_restore;
2274}
1755 2275
1756/*****************************************************************************/ 2276/*****************************************************************************/
1757/* PerlIO::cede */ 2277/* PerlIO::cede */
1758 2278
1759typedef struct 2279typedef struct
… …
1827 PerlIOBuf_get_cnt, 2347 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2348 PerlIOBuf_set_ptrcnt,
1829}; 2349};
1830 2350
1831/*****************************************************************************/ 2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
1832 2353
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 * 2354static SV *
1843pp_restore (pTHX) 2355coro_waitarray_new (pTHX_ int count)
1844{ 2356{
1845 dSP; 2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2358 AV *av = newAV ();
2359 SV **ary;
1846 2360
2361 /* unfortunately, building manually saves memory */
2362 Newx (ary, 2, SV *);
2363 AvALLOC (av) = ary;
2364 /*AvARRAY (av) = ary;*/
2365 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2366 AvMAX (av) = 1;
2367 AvFILLp (av) = 0;
2368 ary [0] = newSViv (count);
2369
2370 return newRV_noinc ((SV *)av);
2371}
2372
2373/* semaphore */
2374
2375static void
2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2377{
2378 SV *count_sv = AvARRAY (av)[0];
2379 IV count = SvIVX (count_sv);
2380
2381 count += adjust;
2382 SvIVX (count_sv) = count;
2383
2384 /* now wake up as many waiters as are expected to lock */
2385 while (count > 0 && AvFILLp (av) > 0)
2386 {
2387 SV *cb;
2388
2389 /* swap first two elements so we can shift a waiter */
2390 AvARRAY (av)[0] = AvARRAY (av)[1];
2391 AvARRAY (av)[1] = count_sv;
2392 cb = av_shift (av);
2393
2394 if (SvOBJECT (cb))
2395 {
2396 api_ready (aTHX_ cb);
2397 --count;
2398 }
2399 else if (SvTYPE (cb) == SVt_PVCV)
2400 {
2401 dSP;
1847 PUSHMARK (SP); 2402 PUSHMARK (SP);
2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2404 PUTBACK;
2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2406 }
1848 2407
1849 EXTEND (SP, 3); 2408 SvREFCNT_dec (cb);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2409 }
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2410}
1856 2411
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2412static void
2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2414{
2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2417}
1858 2418
1859enum { 2419static int
1860 CORO_SLF_CUSTOM = 0, 2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861 CORO_SLF_SET_STACKLEVEL = 1, 2421{
1862 CORO_SLF_TRANSFER = 2 2422 AV *av = (AV *)frame->data;
2423 SV *count_sv = AvARRAY (av)[0];
2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2428 else if (SvIVX (count_sv) > 0)
2429 {
2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2433 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2434 else
2435 coro_semaphore_adjust (aTHX_ av, 0);
2436
2437 return 0;
2438 }
2439 else
2440 {
2441 int i;
2442 /* if we were woken up but can't down, we look through the whole */
2443 /* waiters list and only add us if we aren't in there already */
2444 /* this avoids some degenerate memory usage cases */
2445
2446 for (i = 1; i <= AvFILLp (av); ++i)
2447 if (AvARRAY (av)[i] == SvRV (coro_current))
2448 return 1;
2449
2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2451 return 1;
2452 }
2453}
2454
2455static int
2456slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2457{
2458 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2459}
2460
2461static int
2462slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2463{
2464 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2465}
2466
2467static void
2468slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2469{
2470 AV *av = (AV *)SvRV (arg [0]);
2471
2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2473 {
2474 frame->data = (void *)av;
2475 frame->prepare = prepare_nop;
2476 }
2477 else
2478 {
2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2480
2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2482 frame->prepare = prepare_schedule;
2483
2484 /* to avoid race conditions when a woken-up coro gets terminated */
2485 /* we arrange for a temporary on_destroy that calls adjust (0) */
2486 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2487 }
2488}
2489
2490static void
2491slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2492{
2493 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2494 frame->check = slf_check_semaphore_down;
2495}
2496
2497static void
2498slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2499{
2500 if (items >= 2)
2501 {
2502 /* callback form */
2503 AV *av = (AV *)SvRV (arg [0]);
2504 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2505
2506 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2507
2508 if (SvIVX (AvARRAY (av)[0]) > 0)
2509 coro_semaphore_adjust (aTHX_ av, 0);
2510
2511 frame->prepare = prepare_nop;
2512 frame->check = slf_check_nop;
2513 }
2514 else
2515 {
2516 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2517 frame->check = slf_check_semaphore_wait;
2518 }
2519}
2520
2521/* signal */
2522
2523static void
2524coro_signal_wake (pTHX_ AV *av, int count)
2525{
2526 SvIVX (AvARRAY (av)[0]) = 0;
2527
2528 /* now signal count waiters */
2529 while (count > 0 && AvFILLp (av) > 0)
2530 {
2531 SV *cb;
2532
2533 /* swap first two elements so we can shift a waiter */
2534 cb = AvARRAY (av)[0];
2535 AvARRAY (av)[0] = AvARRAY (av)[1];
2536 AvARRAY (av)[1] = cb;
2537
2538 cb = av_shift (av);
2539
2540 api_ready (aTHX_ cb);
2541 sv_setiv (cb, 0); /* signal waiter */
2542 SvREFCNT_dec (cb);
2543
2544 --count;
2545 }
2546}
2547
2548static int
2549slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2550{
2551 /* if we are about to throw, also stop waiting */
2552 return SvROK ((SV *)frame->data) && !CORO_THROW;
2553}
2554
2555static void
2556slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 AV *av = (AV *)SvRV (arg [0]);
2559
2560 if (SvIVX (AvARRAY (av)[0]))
2561 {
2562 SvIVX (AvARRAY (av)[0]) = 0;
2563 frame->prepare = prepare_nop;
2564 frame->check = slf_check_nop;
2565 }
2566 else
2567 {
2568 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2569
2570 av_push (av, waiter);
2571
2572 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2573 frame->prepare = prepare_schedule;
2574 frame->check = slf_check_signal_wait;
2575 }
2576}
2577
2578/*****************************************************************************/
2579/* Coro::AIO */
2580
2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2582
2583/* helper storage struct */
2584struct io_state
2585{
2586 int errorno;
2587 I32 laststype; /* U16 in 5.10.0 */
2588 int laststatval;
2589 Stat_t statcache;
1863}; 2590};
1864 2591
1865/* declare prototype */ 2592static void
1866XS(XS_Coro__State__set_stacklevel); 2593coro_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{ 2594{
2595 dXSARGS;
2596 AV *state = (AV *)GENSUB_ARG;
2597 SV *coro = av_pop (state);
2598 SV *data_sv = newSV (sizeof (struct io_state));
2599
2600 av_extend (state, items - 1);
2601
2602 sv_upgrade (data_sv, SVt_PV);
2603 SvCUR_set (data_sv, sizeof (struct io_state));
2604 SvPOK_only (data_sv);
2605
2606 {
2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2608
2609 data->errorno = errno;
2610 data->laststype = PL_laststype;
2611 data->laststatval = PL_laststatval;
2612 data->statcache = PL_statcache;
2613 }
2614
2615 /* now build the result vector out of all the parameters and the data_sv */
2616 {
2617 int i;
2618
2619 for (i = 0; i < items; ++i)
2620 av_push (state, SvREFCNT_inc_NN (ST (i)));
2621 }
2622
2623 av_push (state, data_sv);
2624
2625 api_ready (aTHX_ coro);
2626 SvREFCNT_dec (coro);
2627 SvREFCNT_dec ((AV *)state);
2628}
2629
2630static int
2631slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2632{
2633 AV *state = (AV *)frame->data;
2634
2635 /* if we are about to throw, return early */
2636 /* this does not cancel the aio request, but at least */
2637 /* it quickly returns */
2638 if (CORO_THROW)
2639 return 0;
2640
2641 /* one element that is an RV? repeat! */
2642 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2643 return 1;
2644
2645 /* restore status */
2646 {
2647 SV *data_sv = av_pop (state);
2648 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2649
2650 errno = data->errorno;
2651 PL_laststype = data->laststype;
2652 PL_laststatval = data->laststatval;
2653 PL_statcache = data->statcache;
2654
2655 SvREFCNT_dec (data_sv);
2656 }
2657
2658 /* push result values */
2659 {
1877 dSP; 2660 dSP;
1878 struct transfer_args ta; 2661 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 2662
1884 /* do a quick consistency check on the "function" object, and if it isn't */ 2663 EXTEND (SP, AvFILLp (state) + 1);
1885 /* for us, divert to the real entersub */ 2664 for (i = 0; i <= AvFILLp (state); ++i)
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) 2665 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888 2666
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; 2667 PUTBACK;
2668 }
1901 2669
1902 if (!ix) 2670 return 0;
1903 { 2671}
1904 slf = (struct CoroSLF *)CvSTART (GvCV (*sp)); 2672
1905 ix = slf->prepare (aTHX_ arg, items); 2673static void
2674slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2675{
2676 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2677 SV *coro_hv = SvRV (coro_current);
2678 struct coro *coro = SvSTATE_hv (coro_hv);
2679
2680 /* put our coroutine id on the state arg */
2681 av_push (state, SvREFCNT_inc_NN (coro_hv));
2682
2683 /* first see whether we have a non-zero priority and set it as AIO prio */
2684 if (coro->prio)
1906 } 2685 {
2686 dSP;
1907 2687
1908 switch (ix) 2688 static SV *prio_cv;
2689 static SV *prio_sv;
2690
2691 if (expect_false (!prio_cv))
2692 {
2693 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2694 prio_sv = newSViv (0);
2695 }
2696
2697 PUSHMARK (SP);
2698 sv_setiv (prio_sv, coro->prio);
2699 XPUSHs (prio_sv);
2700
2701 PUTBACK;
2702 call_sv (prio_cv, G_VOID | G_DISCARD);
1909 { 2703 }
1910 case CORO_SLF_SET_STACKLEVEL:
1911 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912 break;
1913 2704
1914 case CORO_SLF_TRANSFER: 2705 /* now call the original request */
1915 if (items != 2) 2706 {
1916 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2707 dSP;
2708 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2709 int i;
1917 2710
1918 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2711 PUSHMARK (SP);
1919 break;
1920 2712
1921 case CORO_SLF_SCHEDULE: 2713 /* first push all args to the stack */
1922 prepare_schedule (aTHX_ &ta); 2714 EXTEND (SP, items + 1);
1923 break;
1924 2715
1925 case CORO_SLF_CEDE: 2716 for (i = 0; i < items; ++i)
1926 prepare_cede (aTHX_ &ta); 2717 PUSHs (arg [i]);
1927 break;
1928 2718
1929 case CORO_SLF_CEDE_NOTSELF: 2719 /* now push the callback closure */
1930 prepare_cede_notself (aTHX_ &ta); 2720 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1931 break;
1932 2721
1933 default: 2722 /* 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; 2723 PUTBACK;
1944 SLF_TAIL; 2724 call_sv ((SV *)req, G_VOID | G_DISCARD);
1945 SPAGAIN; 2725 }
1946 RETURN;
1947}
1948 2726
1949static void 2727 /* 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) 2728 frame->data = (void *)state;
1951{ 2729 frame->prepare = prepare_schedule;
1952 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2730 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} 2731}
2732
2733static void
2734coro_aio_req_xs (pTHX_ CV *cv)
2735{
2736 dXSARGS;
2737
2738 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2739
2740 XSRETURN_EMPTY;
2741}
2742
2743/*****************************************************************************/
2744
2745#if CORO_CLONE
2746# include "clone.c"
2747#endif
1973 2748
1974MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1975 2750
1976PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
1977 2752
1978BOOT: 2753BOOT:
1979{ 2754{
1980#ifdef USE_ITHREADS 2755#ifdef USE_ITHREADS
1981 MUTEX_INIT (&coro_lock);
1982# if CORO_PTHREAD 2756# if CORO_PTHREAD
1983 coro_thx = PERL_GET_CONTEXT; 2757 coro_thx = PERL_GET_CONTEXT;
1984# endif 2758# endif
1985#endif 2759#endif
1986 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
2761
2762 cctx_current = cctx_new_empty ();
1987 2763
1988 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1989 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1990 2766
1991 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2767 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2007 main_top_env = PL_top_env; 2783 main_top_env = PL_top_env;
2008 2784
2009 while (main_top_env->je_prev) 2785 while (main_top_env->je_prev)
2010 main_top_env = main_top_env->je_prev; 2786 main_top_env = main_top_env->je_prev;
2011 2787
2788 {
2789 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2790
2791 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2792 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2793
2794 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2795 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2796 }
2797
2012 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
2013 coroapi.rev = CORO_API_REVISION; 2799 coroapi.rev = CORO_API_REVISION;
2800
2014 coroapi.transfer = api_transfer; 2801 coroapi.transfer = api_transfer;
2802
2803 coroapi.sv_state = SvSTATE_;
2804 coroapi.execute_slf = api_execute_slf;
2805 coroapi.prepare_nop = prepare_nop;
2806 coroapi.prepare_schedule = prepare_schedule;
2807 coroapi.prepare_cede = prepare_cede;
2808 coroapi.prepare_cede_notself = prepare_cede_notself;
2015 2809
2016 { 2810 {
2017 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2811 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018 2812
2019 if (!svp) croak ("Time::HiRes is required"); 2813 if (!svp) croak ("Time::HiRes is required");
… …
2025 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2026} 2820}
2027 2821
2028SV * 2822SV *
2029new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
2030 CODE: 2826 CODE:
2031{ 2827{
2032 struct coro *coro; 2828 struct coro *coro;
2033 MAGIC *mg; 2829 MAGIC *mg;
2034 HV *hv; 2830 HV *hv;
2831 CV *cb;
2035 int i; 2832 int i;
2833
2834 if (items > 1)
2835 {
2836 cb = coro_sv_2cv (aTHX_ ST (1));
2837
2838 if (!ix)
2839 {
2840 if (CvISXSUB (cb))
2841 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2842
2843 if (!CvROOT (cb))
2844 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2845 }
2846 }
2036 2847
2037 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
2038 coro->args = newAV (); 2849 coro->args = newAV ();
2039 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
2040 2851
… …
2045 coro->hv = hv = newHV (); 2856 coro->hv = hv = newHV ();
2046 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2857 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2047 mg->mg_flags |= MGf_DUP; 2858 mg->mg_flags |= MGf_DUP;
2048 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2049 2860
2861 if (items > 1)
2862 {
2050 av_extend (coro->args, items - 1); 2863 av_extend (coro->args, items - 1 + ix - 1);
2864
2865 if (ix)
2866 {
2867 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2868 cb = cv_coro_run;
2869 }
2870
2871 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2872
2051 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
2052 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
2053} 2876}
2054 OUTPUT: 2877 OUTPUT:
2055 RETVAL 2878 RETVAL
2056 2879
2057void 2880void
2058_set_stacklevel (...) 2881transfer (...)
2059 ALIAS: 2882 PROTOTYPE: $$
2060 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 2883 CODE:
2061 Coro::State::transfer = CORO_SLF_TRANSFER 2884 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 2885
2068bool 2886bool
2069_destroy (SV *coro_sv) 2887_destroy (SV *coro_sv)
2070 CODE: 2888 CODE:
2071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2889 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2076_exit (int code) 2894_exit (int code)
2077 PROTOTYPE: $ 2895 PROTOTYPE: $
2078 CODE: 2896 CODE:
2079 _exit (code); 2897 _exit (code);
2080 2898
2899SV *
2900clone (Coro::State coro)
2901 CODE:
2902{
2903#if CORO_CLONE
2904 struct coro *ncoro = coro_clone (coro);
2905 MAGIC *mg;
2906 /* TODO: too much duplication */
2907 ncoro->hv = newHV ();
2908 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2909 mg->mg_flags |= MGf_DUP;
2910 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2911#else
2912 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2913#endif
2914}
2915 OUTPUT:
2916 RETVAL
2917
2081int 2918int
2082cctx_stacksize (int new_stacksize = 0) 2919cctx_stacksize (int new_stacksize = 0)
2920 PROTOTYPE: ;$
2083 CODE: 2921 CODE:
2084 RETVAL = cctx_stacksize; 2922 RETVAL = cctx_stacksize;
2085 if (new_stacksize) 2923 if (new_stacksize)
2086 { 2924 {
2087 cctx_stacksize = new_stacksize; 2925 cctx_stacksize = new_stacksize;
… …
2090 OUTPUT: 2928 OUTPUT:
2091 RETVAL 2929 RETVAL
2092 2930
2093int 2931int
2094cctx_max_idle (int max_idle = 0) 2932cctx_max_idle (int max_idle = 0)
2933 PROTOTYPE: ;$
2095 CODE: 2934 CODE:
2096 RETVAL = cctx_max_idle; 2935 RETVAL = cctx_max_idle;
2097 if (max_idle > 1) 2936 if (max_idle > 1)
2098 cctx_max_idle = max_idle; 2937 cctx_max_idle = max_idle;
2099 OUTPUT: 2938 OUTPUT:
2100 RETVAL 2939 RETVAL
2101 2940
2102int 2941int
2103cctx_count () 2942cctx_count ()
2943 PROTOTYPE:
2104 CODE: 2944 CODE:
2105 RETVAL = cctx_count; 2945 RETVAL = cctx_count;
2106 OUTPUT: 2946 OUTPUT:
2107 RETVAL 2947 RETVAL
2108 2948
2109int 2949int
2110cctx_idle () 2950cctx_idle ()
2951 PROTOTYPE:
2111 CODE: 2952 CODE:
2112 RETVAL = cctx_idle; 2953 RETVAL = cctx_idle;
2113 OUTPUT: 2954 OUTPUT:
2114 RETVAL 2955 RETVAL
2115 2956
2116void 2957void
2117list () 2958list ()
2959 PROTOTYPE:
2118 PPCODE: 2960 PPCODE:
2119{ 2961{
2120 struct coro *coro; 2962 struct coro *coro;
2121 for (coro = coro_first; coro; coro = coro->next) 2963 for (coro = coro_first; coro; coro = coro->next)
2122 if (coro->hv) 2964 if (coro->hv)
… …
2184 3026
2185void 3027void
2186throw (Coro::State self, SV *throw = &PL_sv_undef) 3028throw (Coro::State self, SV *throw = &PL_sv_undef)
2187 PROTOTYPE: $;$ 3029 PROTOTYPE: $;$
2188 CODE: 3030 CODE:
3031{
3032 struct coro *current = SvSTATE_current;
3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
2189 SvREFCNT_dec (self->throw); 3034 SvREFCNT_dec (*throwp);
2190 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3036}
2191 3037
2192void 3038void
2193api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3039api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3040 PROTOTYPE: $;$
2194 C_ARGS: aTHX_ coro, flags 3041 C_ARGS: aTHX_ coro, flags
2195 3042
2196SV * 3043SV *
2197has_cctx (Coro::State coro) 3044has_cctx (Coro::State coro)
2198 PROTOTYPE: $ 3045 PROTOTYPE: $
2199 CODE: 3046 CODE:
2200 RETVAL = boolSV (!!coro->cctx); 3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2201 OUTPUT: 3049 OUTPUT:
2202 RETVAL 3050 RETVAL
2203 3051
2204int 3052int
2205is_traced (Coro::State coro) 3053is_traced (Coro::State coro)
… …
2223 OUTPUT: 3071 OUTPUT:
2224 RETVAL 3072 RETVAL
2225 3073
2226void 3074void
2227force_cctx () 3075force_cctx ()
3076 PROTOTYPE:
2228 CODE: 3077 CODE:
2229 struct coro *coro = SvSTATE (coro_current);
2230 coro->cctx->idle_sp = 0; 3078 cctx_current->idle_sp = 0;
2231 3079
2232void 3080void
2233swap_defsv (Coro::State self) 3081swap_defsv (Coro::State self)
2234 PROTOTYPE: $ 3082 PROTOTYPE: $
2235 ALIAS: 3083 ALIAS:
2236 swap_defav = 1 3084 swap_defav = 1
2237 CODE: 3085 CODE:
2238 if (!self->slot) 3086 if (!self->slot)
2239 croak ("cannot swap state with coroutine that has no saved state"); 3087 croak ("cannot swap state with coroutine that has no saved state,");
2240 else 3088 else
2241 { 3089 {
2242 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2244 3092
2245 SV *tmp = *src; *src = *dst; *dst = tmp; 3093 SV *tmp = *src; *src = *dst; *dst = tmp;
2246 } 3094 }
2247 3095
3096
2248MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
2249 3098
2250BOOT: 3099BOOT:
2251{ 3100{
2252 int i; 3101 int i;
2253 3102
2254 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2255 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2256 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2257 3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2258 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2259 SvREADONLY_on (coro_current); 3108 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3109 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3110 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3111 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3112
3113 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3114 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3115 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3116 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2260 3117
2261 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
2262 3119
2263 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2264 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2272 3129
2273 { 3130 {
2274 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2275 3132
2276 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
3134 coroapi.schedule_to = api_schedule_to;
2277 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
2278 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
2279 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
2280 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
2281 coroapi.nready = coro_nready; 3139 coroapi.nready = coro_nready;
2282 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
2283 3141
2284 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
2285 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
2286 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
2287 } 3145 }
2288} 3146}
3147
3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3152
3153void
3154schedule (...)
3155 CODE:
3156 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3157
3158void
3159schedule_to (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3162
3163void
3164cede_to (...)
3165 CODE:
3166 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3167
3168void
3169cede (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
3172
3173void
3174cede_notself (...)
3175 CODE:
3176 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3177
3178void
3179_cancel (Coro::State self)
3180 CODE:
3181 coro_state_destroy (aTHX_ self);
3182 coro_call_on_destroy (aTHX_ self);
2289 3183
2290void 3184void
2291_set_current (SV *current) 3185_set_current (SV *current)
2292 PROTOTYPE: $ 3186 PROTOTYPE: $
2293 CODE: 3187 CODE:
… …
2296 3190
2297void 3191void
2298_set_readyhook (SV *hook) 3192_set_readyhook (SV *hook)
2299 PROTOTYPE: $ 3193 PROTOTYPE: $
2300 CODE: 3194 CODE:
2301 LOCK;
2302 SvREFCNT_dec (coro_readyhook); 3195 SvREFCNT_dec (coro_readyhook);
2303 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3196 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304 UNLOCK;
2305 3197
2306int 3198int
2307prio (Coro::State coro, int newprio = 0) 3199prio (Coro::State coro, int newprio = 0)
3200 PROTOTYPE: $;$
2308 ALIAS: 3201 ALIAS:
2309 nice = 1 3202 nice = 1
2310 CODE: 3203 CODE:
2311{ 3204{
2312 RETVAL = coro->prio; 3205 RETVAL = coro->prio;
… …
2339 CODE: 3232 CODE:
2340 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
2341 OUTPUT: 3234 OUTPUT:
2342 RETVAL 3235 RETVAL
2343 3236
2344# for async_pool speedup
2345void 3237void
2346_pool_1 (SV *cb) 3238_pool_handler (...)
2347 CODE: 3239 CODE:
2348{ 3240 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 3241
2356 if (!invoke) 3242void
3243async_pool (SV *cv, ...)
3244 PROTOTYPE: &@
3245 PPCODE:
3246{
3247 HV *hv = (HV *)av_pop (av_async_pool);
3248 AV *av = newAV ();
3249 SV *cb = ST (0);
3250 int i;
3251
3252 av_extend (av, items - 2);
3253 for (i = 1; i < items; ++i)
3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
3255
3256 if ((SV *)hv == &PL_sv_undef)
2357 { 3257 {
2358 SV *old = PL_diehook; 3258 PUSHMARK (SP);
2359 PL_diehook = 0; 3259 EXTEND (SP, 2);
2360 SvREFCNT_dec (old); 3260 PUSHs (sv_Coro);
2361 croak ("\3async_pool terminate\2\n"); 3261 PUSHs ((SV *)cv_pool_handler);
3262 PUTBACK;
3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2362 } 3267 }
2363 3268
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 { 3269 {
2377 av_fill (defav, len - 1); 3270 struct coro *coro = SvSTATE_hv (hv);
2378 for (i = 0; i < len; ++i) 3271
2379 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3272 assert (!coro->invoke_cb);
3273 assert (!coro->invoke_av);
3274 coro->invoke_cb = SvREFCNT_inc (cb);
3275 coro->invoke_av = av;
2380 } 3276 }
2381 3277
3278 api_ready (aTHX_ (SV *)hv);
3279
3280 if (GIMME_V != G_VOID)
3281 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3282 else
2382 SvREFCNT_dec (invoke); 3283 SvREFCNT_dec (hv);
2383} 3284}
2384 3285
2385void 3286SV *
2386_pool_2 (SV *cb) 3287rouse_cb ()
3288 PROTOTYPE:
2387 CODE: 3289 CODE:
2388{ 3290 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: 3291 OUTPUT:
2461 RETVAL 3292 RETVAL
2462 3293
2463#endif
2464
2465
2466MODULE = Coro::State PACKAGE = Coro::AIO
2467
2468void 3294void
2469_get_state (SV *self) 3295rouse_wait (...)
3296 PROTOTYPE: ;$
2470 PPCODE: 3297 PPCODE:
2471{ 3298 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 3299
2480 data->errorno = errno;
2481 data->laststype = PL_laststype;
2482 data->laststatval = PL_laststatval;
2483 data->statcache = PL_statcache;
2484 3300
2485 av_extend (av, AvFILLp (defav) + 1 + 1); 3301MODULE = Coro::State PACKAGE = PerlIO::cede
2486 3302
2487 for (i = 0; i <= AvFILLp (defav); ++i) 3303BOOT:
2488 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2489 3305
2490 av_push (av, data_sv);
2491 3306
2492 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3307MODULE = Coro::State PACKAGE = Coro::Semaphore
2493 3308
2494 api_ready (aTHX_ self); 3309SV *
2495} 3310new (SV *klass, SV *count = 0)
3311 CODE:
3312 RETVAL = sv_bless (
3313 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3314 GvSTASH (CvGV (cv))
3315 );
3316 OUTPUT:
3317 RETVAL
3318
3319# helper for Coro::Channel
3320SV *
3321_alloc (int count)
3322 CODE:
3323 RETVAL = coro_waitarray_new (aTHX_ count);
3324 OUTPUT:
3325 RETVAL
3326
3327SV *
3328count (SV *self)
3329 CODE:
3330 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3331 OUTPUT:
3332 RETVAL
2496 3333
2497void 3334void
2498_set_state (SV *state) 3335up (SV *self, int adjust = 1)
2499 PROTOTYPE: $ 3336 ALIAS:
3337 adjust = 1
3338 CODE:
3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3340
3341void
3342down (...)
3343 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3350
3351void
3352try (SV *self)
3353 PPCODE:
3354{
3355 AV *av = (AV *)SvRV (self);
3356 SV *count_sv = AvARRAY (av)[0];
3357 IV count = SvIVX (count_sv);
3358
3359 if (count > 0)
3360 {
3361 --count;
3362 SvIVX (count_sv) = count;
3363 XSRETURN_YES;
3364 }
3365 else
3366 XSRETURN_NO;
3367}
3368
3369void
3370waiters (SV *self)
3371 PPCODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
3375
3376 if (GIMME_V == G_SCALAR)
3377 XPUSHs (sv_2mortal (newSViv (wcount)));
3378 else
3379 {
3380 int i;
3381 EXTEND (SP, wcount);
3382 for (i = 1; i <= wcount; ++i)
3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3384 }
3385}
3386
3387MODULE = Coro::State PACKAGE = Coro::Signal
3388
3389SV *
3390new (SV *klass)
2500 PPCODE: 3391 CODE:
3392 RETVAL = sv_bless (
3393 coro_waitarray_new (aTHX_ 0),
3394 GvSTASH (CvGV (cv))
3395 );
3396 OUTPUT:
3397 RETVAL
3398
3399void
3400wait (...)
3401 CODE:
3402 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3403
3404void
3405broadcast (SV *self)
3406 CODE:
2501{ 3407{
2502 AV *av = (AV *)SvRV (state); 3408 AV *av = (AV *)SvRV (self);
2503 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3409 coro_signal_wake (aTHX_ av, AvFILLp (av));
2504 int i; 3410}
2505 3411
2506 errno = data->errorno; 3412void
2507 PL_laststype = data->laststype; 3413send (SV *self)
2508 PL_laststatval = data->laststatval; 3414 CODE:
2509 PL_statcache = data->statcache; 3415{
3416 AV *av = (AV *)SvRV (self);
2510 3417
2511 EXTEND (SP, AvFILLp (av)); 3418 if (AvFILLp (av))
2512 for (i = 0; i < AvFILLp (av); ++i) 3419 coro_signal_wake (aTHX_ av, 1);
2513 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3420 else
3421 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2514} 3422}
3423
3424IV
3425awaited (SV *self)
3426 CODE:
3427 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3428 OUTPUT:
3429 RETVAL
2515 3430
2516 3431
2517MODULE = Coro::State PACKAGE = Coro::AnyEvent 3432MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518 3433
2519BOOT: 3434BOOT:
2520 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3435 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521 3436
2522SV * 3437void
2523_schedule (...) 3438_schedule (...)
2524 PROTOTYPE: @
2525 CODE: 3439 CODE:
2526{ 3440{
2527 static int incede; 3441 static int incede;
2528 3442
2529 api_cede_notself (aTHX); 3443 api_cede_notself (aTHX);
… …
2535 sv_setsv (sv_activity, &PL_sv_undef); 3449 sv_setsv (sv_activity, &PL_sv_undef);
2536 if (coro_nready >= incede) 3450 if (coro_nready >= incede)
2537 { 3451 {
2538 PUSHMARK (SP); 3452 PUSHMARK (SP);
2539 PUTBACK; 3453 PUTBACK;
2540 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3454 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2541 SPAGAIN;
2542 } 3455 }
2543 3456
2544 --incede; 3457 --incede;
2545} 3458}
2546 3459
2547 3460
2548MODULE = Coro::State PACKAGE = PerlIO::cede 3461MODULE = Coro::State PACKAGE = Coro::AIO
2549 3462
2550BOOT: 3463void
2551 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3464_register (char *target, char *proto, SV *req)
3465 CODE:
3466{
3467 CV *req_cv = coro_sv_2cv (aTHX_ req);
3468 /* newXSproto doesn't return the CV on 5.8 */
3469 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3470 sv_setpv ((SV *)slf_cv, proto);
3471 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3472}
2552 3473

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