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Comparing Coro/Coro/State.xs (file contents):
Revision 1.279 by root, Sun Nov 16 08:59:16 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; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
187 181
188static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 184static SV *rv_diehook;
191static SV *rv_warnhook; 185static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
193 187
194/* async_pool helper stuff */ 188/* async_pool helper stuff */
195static SV *sv_pool_rss; 189static SV *sv_pool_rss;
196static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
197static 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;
198 196
199/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
200static SV *sv_activity; 198static SV *sv_activity;
201 199
202static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 229 int valgrind_id;
232#endif 230#endif
233 unsigned char flags; 231 unsigned char flags;
234} coro_cctx; 232} coro_cctx;
235 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
236enum { 238enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
257/* this is a structure representing a perl-level coroutine */ 259/* this is a structure representing a perl-level coroutine */
258struct coro { 260struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 261 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 262 coro_cctx *cctx;
261 263
262 /* process data */ 264 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 265 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 266 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 267 perl_slots *slot; /* basically the saved sp */
266 268
269 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 270 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 271 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 272 int flags; /* CF_ flags */
270 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);
271 275
272 /* statistics */ 276 /* statistics */
273 int usecount; /* number of transfers to this coro */ 277 int usecount; /* number of transfers to this coro */
274 278
275 /* coro process data */ 279 /* coro process data */
276 int prio; 280 int prio;
277 SV *throw; /* exception to be thrown */ 281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
278 283
279 /* async_pool */ 284 /* async_pool */
280 SV *saved_deffh; 285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
281 288
282 /* linked list */ 289 /* linked list */
283 struct coro *next, *prev; 290 struct coro *next, *prev;
284}; 291};
285 292
286typedef struct coro *Coro__State; 293typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 294typedef struct coro *Coro__State_or_hashref;
288 295
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 */
289static struct CoroSLF slf_frame; /* the current slf frame */ 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
… …
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
… …
515 } 542 }
516 543
517 PUTBACK; 544 PUTBACK;
518 } 545 }
519 546
520 slf_frame = c->slf_frame; 547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
521} 549}
522 550
523static void 551static void
524save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
525{ 553{
554 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 555 c->slf_frame = slf_frame;
527 556
528 { 557 {
529 dSP; 558 dSP;
530 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
… …
605 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
608 */ 637 */
609#if CORO_PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
611#else 640#else
612static void 641static void
613coro_init_stacks (pTHX) 642coro_init_stacks (pTHX)
614{ 643{
615 PL_curstackinfo = new_stackinfo(32, 8); 644 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 708 Safefree (PL_retstack);
680#endif 709#endif
681} 710}
682 711
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
683static size_t 721static size_t
684coro_rss (pTHX_ struct coro *coro) 722coro_rss (pTHX_ struct coro *coro)
685{ 723{
686 size_t rss = sizeof (*coro); 724 size_t rss = sizeof (*coro);
687 725
688 if (coro->mainstack) 726 if (coro->mainstack)
689 { 727 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 728 if (coro->flags & CF_RUNNING)
694 { 729 {
695 slot = &tmp_slot; 730 #define SYM(sym) PL_ ## sym
696 731 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 732 #undef SYM
700 } 733 }
701 else 734 else
702 slot = coro->slot;
703
704 if (slot)
705 { 735 {
706 rss += sizeof (slot->curstackinfo); 736 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 739 }
718 } 740 }
719 741
720 return rss; 742 return rss;
721} 743}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 845slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 846{
825 return 0; 847 return 0;
826} 848}
827 849
828static void 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 */
829coro_setup (pTHX_ struct coro *coro) 859coro_setup (pTHX_ struct coro *coro)
830{ 860{
831 /* 861 /*
832 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
833 */ 863 */
… …
860 { 890 {
861 dSP; 891 dSP;
862 UNOP myop; 892 UNOP myop;
863 893
864 Zero (&myop, 1, UNOP); 894 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
867 898
868 PUSHMARK (SP); 899 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 900 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 901 PUTBACK;
871 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 904 }
875 905
876 /* 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
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 907 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 908 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 909 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 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;
881} 922}
882 923
883static void 924static void
884coro_destruct (pTHX_ struct coro *coro) 925coro_destruct (pTHX_ struct coro *coro)
885{ 926{
… …
909 950
910 SvREFCNT_dec (PL_diehook); 951 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 952 SvREFCNT_dec (PL_warnhook);
912 953
913 SvREFCNT_dec (coro->saved_deffh); 954 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
915 958
916 coro_destruct_stacks (aTHX); 959 coro_destruct_stacks (aTHX);
917} 960}
918 961
919INLINE void 962INLINE void
… …
929static int 972static int
930runops_trace (pTHX) 973runops_trace (pTHX)
931{ 974{
932 COP *oldcop = 0; 975 COP *oldcop = 0;
933 int oldcxix = -2; 976 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 977
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 979 {
939 PERL_ASYNC_CHECK (); 980 PERL_ASYNC_CHECK ();
940 981
941 if (cctx->flags & CC_TRACE_ALL) 982 if (cctx_current->flags & CC_TRACE_ALL)
942 { 983 {
943 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)
944 { 985 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 987 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 988 AV *av = newAV (); /* return values */
948 SV **cb; 989 SV **cb;
… …
985 1026
986 if (PL_curcop != &PL_compiling) 1027 if (PL_curcop != &PL_compiling)
987 { 1028 {
988 SV **cb; 1029 SV **cb;
989 1030
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1032 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1034
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1036 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1037 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1038 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1039 SV *fullname = sv_2mortal (newSV (0));
1000 1040
1001 if (isGV (gv)) 1041 if (isGV (gv))
… …
1006 SAVETMPS; 1046 SAVETMPS;
1007 EXTEND (SP, 3); 1047 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1048 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1049 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1050 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1052 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1055 SPAGAIN;
1016 FREETMPS; 1056 FREETMPS;
… …
1019 } 1059 }
1020 1060
1021 oldcxix = cxstack_ix; 1061 oldcxix = cxstack_ix;
1022 } 1062 }
1023 1063
1024 if (cctx->flags & CC_TRACE_LINE) 1064 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1065 {
1026 dSP; 1066 dSP;
1027 1067
1028 PL_runops = RUNOPS_DEFAULT; 1068 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1069 ENTER;
… …
1048 1088
1049 TAINT_NOT; 1089 TAINT_NOT;
1050 return 0; 1090 return 0;
1051} 1091}
1052 1092
1093static struct CoroSLF cctx_ssl_frame;
1094
1053static void 1095static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1097{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1098 ta->prev = 0;
1058} 1099}
1059 1100
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1101static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1103{
1063/* 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 */
1064static void NOINLINE 1110static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1111cctx_prepare (pTHX)
1066{ 1112{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
1071 1114
1072 if (cctx->flags & CC_TRACE) 1115 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1116 PL_runops = runops_trace;
1074 1117
1075 Zero (&myop, 1, UNOP); 1118 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1119 * that can lead to creation of a new cctx */
1077 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));
1078 1122
1079 PUSHMARK (SP); 1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1124 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1125
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1126 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1127 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1128}
1088 1129
1089/* 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 */
1090INLINE void 1131INLINE void
1091transfer_tail (pTHX) 1132transfer_tail (pTHX)
1092{ 1133{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1134 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1135}
1109 1136
1110/* 1137/*
1111 * this is a _very_ stripped down perl interpreter ;) 1138 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1139 */
… …
1124 /* normally we would need to skip the entersub here */ 1151 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1152 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1153 /* PL_nop = PL_nop->op_next */
1127 1154
1128 /* inject a fake subroutine call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1156 cctx_prepare (aTHX);
1130 1157
1131 /* cctx_run is the alternative tail of transfer() */ 1158 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1159 transfer_tail (aTHX);
1134 1160
1135 /* 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 */
1136 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
1137 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 */
1138 1168
1139 /* 1169 /*
1140 * 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
1141 * 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)
1142 * 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
… …
1226cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
1227{ 1257{
1228 if (!cctx) 1258 if (!cctx)
1229 return; 1259 return;
1230 1260
1261 assert (cctx != cctx_current);//D temporary
1262
1231 --cctx_count; 1263 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1264 coro_destroy (&cctx->cctx);
1233 1265
1234 /* coro_transfer creates new, empty cctx's */ 1266 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1267 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1294 1326
1295static void 1327static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1298 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1299 { 1333 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1336
1303 if (expect_false (next->flags & CF_RUNNING)) 1337 if (expect_false (next->flags & CF_RUNNING))
1304 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,");
1305 1339
1306 if (expect_false (next->flags & CF_DESTROYED)) 1340 if (expect_false (next->flags & CF_DESTROYED))
… …
1312#endif 1346#endif
1313 } 1347 }
1314} 1348}
1315 1349
1316/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1317static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1353{
1320 dSTACKLEVEL; 1354 dSTACKLEVEL;
1321 1355
1322 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1357 if (expect_false (!prev))
1324 { 1358 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1359 cctx_current->idle_sp = STACKLEVEL;
1326 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 */
1327 } 1361 }
1328 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1329 { 1363 {
1330 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
1331 1365
1332 if (expect_false (prev->flags & CF_NEW)) 1366 if (expect_false (prev->flags & CF_NEW))
1333 { 1367 {
1334 /* create a new empty/source context */ 1368 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
1338 } 1371 }
1339 1372
1340 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1374 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1375
1345 /* first get rid of the old state */ 1376 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1377 save_perl (aTHX_ prev);
1347 1378
1348 if (expect_false (next->flags & CF_NEW)) 1379 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1384 coro_setup (aTHX_ next);
1354 } 1385 }
1355 else 1386 else
1356 load_perl (aTHX_ next); 1387 load_perl (aTHX_ next);
1357 1388
1358 prev__cctx = prev->cctx; 1389 assert (!prev->cctx);//D temporary
1359 1390
1360 /* possibly untie and reuse the cctx */ 1391 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1392 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1393 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1394 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1395 && !force_cctx
1365 )) 1396 ))
1366 { 1397 {
1367 /* 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 */
1368 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));
1369 1400
1370 prev->cctx = 0;
1371
1372 /* 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. */
1373 /* 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 */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1404 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1405 next->cctx = cctx_get (aTHX);
1377 1406
1378 cctx_put (prev__cctx); 1407 cctx_put (cctx_current);
1379 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1380 1411
1381 ++next->usecount; 1412 ++next->usecount;
1382 1413
1383 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1416
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1417 next->cctx = 0;
1387 transfer_next = next;
1388 1418
1389 if (expect_false (prev__cctx != next->cctx)) 1419 if (expect_false (cctx_prev != cctx_current))
1390 { 1420 {
1391 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1424 }
1395 1425
1396 transfer_tail (aTHX); 1426 transfer_tail (aTHX);
1397 } 1427 }
1398} 1428}
… …
1405static int 1435static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1437{
1408 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
1409 return 0; 1439 return 0;
1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1410 1443
1411 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1412 1445
1413 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
1414 { 1447 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1449 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1450 --coro_nready;
1419 UNLOCK;
1420 } 1451 }
1421 else 1452 else
1422 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 */
1423 1454
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1467
1437 coro->slot = 0; 1468 coro->slot = 0;
1438 } 1469 }
1439 1470
1440 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1442 1475
1443 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1446 1479
… …
1500 1533
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1503} 1536}
1504 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
1505/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1506 1562
1507static void 1563INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1564coro_enq (pTHX_ struct coro *coro)
1509{ 1565{
1510 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));
1511} 1567}
1512 1568
1513static SV * 1569INLINE SV *
1514coro_deq (pTHX) 1570coro_deq (pTHX)
1515{ 1571{
1516 int prio; 1572 int prio;
1517 1573
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1527{ 1583{
1528 struct coro *coro; 1584 struct coro *coro;
1529 SV *sv_hook; 1585 SV *sv_hook;
1530 void (*xs_hook)(void); 1586 void (*xs_hook)(void);
1531 1587
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
1536 1589
1537 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
1538 return 0; 1591 return 0;
1539 1592
1540 coro->flags |= CF_READY; 1593 coro->flags |= CF_READY;
1541 1594
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1595 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1596 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1597
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1598 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1599 ++coro_nready;
1549 1600
1550 UNLOCK;
1551
1552 if (sv_hook) 1601 if (sv_hook)
1553 { 1602 {
1554 dSP; 1603 dSP;
1555 1604
1556 ENTER; 1605 ENTER;
1557 SAVETMPS; 1606 SAVETMPS;
1558 1607
1559 PUSHMARK (SP); 1608 PUSHMARK (SP);
1560 PUTBACK; 1609 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1611
1564 FREETMPS; 1612 FREETMPS;
1565 LEAVE; 1613 LEAVE;
1566 } 1614 }
1567 1615
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
1576{ 1624{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1626}
1579 1627
1628/* expects to own a reference to next->hv */
1580INLINE void 1629INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1631{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1632 SV *prev_sv = SvRV (coro_current);
1633
1627 ta->prev = SvSTATE (prev_sv); 1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1628 TRANSFER_CHECK (*ta); 1637 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1638
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1639 SvRV_set (coro_current, (SV *)next->hv);
1632 1640
1633 LOCK;
1634 free_coro_mortal (aTHX); 1641 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1642 coro_mortal = prev_sv;
1636 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 }
1637} 1694}
1638 1695
1639INLINE void 1696INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1698{
… …
1662{ 1719{
1663 struct coro_transfer_args ta; 1720 struct coro_transfer_args ta;
1664 1721
1665 prepare_schedule (aTHX_ &ta); 1722 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1724}
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);
1667} 1734}
1668 1735
1669static int 1736static int
1670api_cede (pTHX) 1737api_cede (pTHX)
1671{ 1738{
… …
1700static void 1767static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1768api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1769{
1703 struct coro *coro = SvSTATE (coro_sv); 1770 struct coro *coro = SvSTATE (coro_sv);
1704 1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1705 if (flags & CC_TRACE) 1775 if (flags & CC_TRACE)
1706 { 1776 {
1707 if (!coro->cctx) 1777 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1778 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1779 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1781
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1783 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1785 {
… …
1718 if (coro->flags & CF_RUNNING) 1788 if (coro->flags & CF_RUNNING)
1719 PL_runops = RUNOPS_DEFAULT; 1789 PL_runops = RUNOPS_DEFAULT;
1720 else 1790 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1791 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1792 }
1793}
1794
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
1851static int
1852slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1853{
1854 HV *hv = (HV *)SvRV (coro_current);
1855 struct coro *coro = (struct coro *)frame->data;
1856
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 }
1980
1981 return 0;
1982}
1983
1984static void
1985slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 SV *cb;
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;
1723} 2274}
1724 2275
1725/*****************************************************************************/ 2276/*****************************************************************************/
1726/* PerlIO::cede */ 2277/* PerlIO::cede */
1727 2278
… …
1796 PerlIOBuf_get_cnt, 2347 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2348 PerlIOBuf_set_ptrcnt,
1798}; 2349};
1799 2350
1800/*****************************************************************************/ 2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
1801 2353
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP * 2354static SV *
1813pp_restore (pTHX) 2355coro_waitarray_new (pTHX_ int count)
1814{ 2356{
1815 dSP; 2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2358 AV *av = newAV ();
2359 SV **ary;
1816 2360
1817 PUSHMARK (SP); 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);
1818 2369
1819 EXTEND (SP, 3); 2370 return newRV_noinc ((SV *)av);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826} 2371}
1827 2372
1828static void 2373/* semaphore */
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833 2374
1834static void 2375static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2377{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2378 SV *count_sv = AvARRAY (av)[0];
2379 IV count = SvIVX (count_sv);
1838 2380
1839 frame->prepare = slf_prepare_set_stacklevel; 2381 count += adjust;
1840 frame->check = slf_check_nop; 2382 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2383
1844static void 2384 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2385 while (count > 0 && AvFILLp (av) > 0)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 { 2386 {
1903 /* first iteration */ 2387 SV *cb;
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908 2388
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2389 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2390 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2391 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2392 cb = av_shift (av);
1913 2393
1914 /* pop args */ 2394 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2395 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2396 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2397 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2398 }
1924 2399 else if (SvTYPE (cb) == SVt_PVCV)
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, GvCV (gv), arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 { 2400 {
1955 if (sp == bot) 2401 dSP;
1956 XPUSHs (&PL_sv_undef); 2402 PUSHMARK (SP);
1957 2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2404 PUTBACK;
2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2406 }
1960 2407
1961 PUTBACK; 2408 SvREFCNT_dec (cb);
1962 } 2409 }
1963
1964 return NORMAL;
1965} 2410}
1966 2411
1967static void 2412static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1969{ 2414{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998} 2417}
1999
2000/*****************************************************************************/
2001 2418
2002static int 2419static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2421{
2005 AV *av = (AV *)frame->data; 2422 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2423 SV *count_sv = AvARRAY (av)[0];
2007 2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2008 if (SvIVX (count_sv) > 0) 2428 else if (SvIVX (count_sv) > 0)
2009 { 2429 {
2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2433 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2434 else
2435 coro_semaphore_adjust (aTHX_ av, 0);
2436
2011 return 0; 2437 return 0;
2012 } 2438 }
2013 else 2439 else
2014 { 2440 {
2015 int i; 2441 int i;
… …
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1; 2451 return 1;
2026 } 2452 }
2027} 2453}
2028 2454
2029static void 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
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2468slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2469{
2032 AV *av = (AV *)SvRV (arg [0]); 2470 AV *av = (AV *)SvRV (arg [0]);
2033 2471
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2473 {
… …
2040 { 2478 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2480
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2482 frame->prepare = prepare_schedule;
2045 }
2046 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);
2047 frame->check = slf_check_semaphore_down; 2494 frame->check = slf_check_semaphore_down;
2495}
2048 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 }
2049} 2576}
2050 2577
2051/*****************************************************************************/ 2578/*****************************************************************************/
2579/* Coro::AIO */
2052 2580
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 2582
2055/* create a closure from XS, returns a code reference */ 2583/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 2584struct io_state
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{ 2585{
2061 CV *cv = (CV *)NEWSV (0, 0); 2586 int errorno;
2587 I32 laststype; /* U16 in 5.10.0 */
2588 int laststatval;
2589 Stat_t statcache;
2590};
2062 2591
2592static void
2593coro_aio_callback (pTHX_ CV *cv)
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
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 2602 sv_upgrade (data_sv, SVt_PV);
2603 SvCUR_set (data_sv, sizeof (struct io_state));
2604 SvPOK_only (data_sv);
2064 2605
2065 CvANON_on (cv); 2606 {
2066 CvISXSUB_on (cv); 2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069 2608
2070 return newRV_noinc ((SV *)cv); 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 {
2660 dSP;
2661 int i;
2662
2663 EXTEND (SP, AvFILLp (state) + 1);
2664 for (i = 0; i <= AvFILLp (state); ++i)
2665 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2666
2667 PUTBACK;
2668 }
2669
2670 return 0;
2671}
2672
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)
2685 {
2686 dSP;
2687
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);
2703 }
2704
2705 /* now call the original request */
2706 {
2707 dSP;
2708 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2709 int i;
2710
2711 PUSHMARK (SP);
2712
2713 /* first push all args to the stack */
2714 EXTEND (SP, items + 1);
2715
2716 for (i = 0; i < items; ++i)
2717 PUSHs (arg [i]);
2718
2719 /* now push the callback closure */
2720 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2721
2722 /* now call the AIO function - we assume our request is uncancelable */
2723 PUTBACK;
2724 call_sv ((SV *)req, G_VOID | G_DISCARD);
2725 }
2726
2727 /* now that the requets is going, we loop toll we have a result */
2728 frame->data = (void *)state;
2729 frame->prepare = prepare_schedule;
2730 frame->check = slf_check_aio_req;
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;
2071} 2741}
2072 2742
2073/*****************************************************************************/ 2743/*****************************************************************************/
2074 2744
2745#if CORO_CLONE
2746# include "clone.c"
2747#endif
2748
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 2750
2077PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
2078 2752
2079BOOT: 2753BOOT:
2080{ 2754{
2081#ifdef USE_ITHREADS 2755#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 2756# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 2757 coro_thx = PERL_GET_CONTEXT;
2085# endif 2758# endif
2086#endif 2759#endif
2087 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
2761
2762 cctx_current = cctx_new_empty ();
2088 2763
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 2766
2092 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;
… …
2107 main_mainstack = PL_mainstack; 2782 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 2783 main_top_env = PL_top_env;
2109 2784
2110 while (main_top_env->je_prev) 2785 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 2786 main_top_env = main_top_env->je_prev;
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 }
2112 2797
2113 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 2799 coroapi.rev = CORO_API_REVISION;
2115 2800
2116 coroapi.transfer = api_transfer; 2801 coroapi.transfer = api_transfer;
… …
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2135} 2820}
2136 2821
2137SV * 2822SV *
2138new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
2139 CODE: 2826 CODE:
2140{ 2827{
2141 struct coro *coro; 2828 struct coro *coro;
2142 MAGIC *mg; 2829 MAGIC *mg;
2143 HV *hv; 2830 HV *hv;
2831 CV *cb;
2144 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 }
2145 2847
2146 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV (); 2849 coro->args = newAV ();
2148 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
2149 2851
… …
2154 coro->hv = hv = newHV (); 2856 coro->hv = hv = newHV ();
2155 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);
2156 mg->mg_flags |= MGf_DUP; 2858 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158 2860
2861 if (items > 1)
2862 {
2159 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
2160 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
2162} 2876}
2163 OUTPUT: 2877 OUTPUT:
2164 RETVAL 2878 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 2879
2171void 2880void
2172transfer (...) 2881transfer (...)
2173 PROTOTYPE: $$ 2882 PROTOTYPE: $$
2174 CODE: 2883 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2884 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 2885
2177bool 2886bool
2178_destroy (SV *coro_sv) 2887_destroy (SV *coro_sv)
2179 CODE: 2888 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2889 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2184void 2893void
2185_exit (int code) 2894_exit (int code)
2186 PROTOTYPE: $ 2895 PROTOTYPE: $
2187 CODE: 2896 CODE:
2188 _exit (code); 2897 _exit (code);
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
2189 2917
2190int 2918int
2191cctx_stacksize (int new_stacksize = 0) 2919cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 2920 PROTOTYPE: ;$
2193 CODE: 2921 CODE:
… …
2298 3026
2299void 3027void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3028throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3029 PROTOTYPE: $;$
2302 CODE: 3030 CODE:
3031{
3032 struct coro *current = SvSTATE_current;
3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
2303 SvREFCNT_dec (self->throw); 3034 SvREFCNT_dec (*throwp);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3036}
2305 3037
2306void 3038void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3039api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3040 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3041 C_ARGS: aTHX_ coro, flags
2310 3042
2311SV * 3043SV *
2312has_cctx (Coro::State coro) 3044has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3045 PROTOTYPE: $
2314 CODE: 3046 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3049 OUTPUT:
2317 RETVAL 3050 RETVAL
2318 3051
2319int 3052int
2320is_traced (Coro::State coro) 3053is_traced (Coro::State coro)
… …
2340 3073
2341void 3074void
2342force_cctx () 3075force_cctx ()
2343 PROTOTYPE: 3076 PROTOTYPE:
2344 CODE: 3077 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3078 cctx_current->idle_sp = 0;
2347 3079
2348void 3080void
2349swap_defsv (Coro::State self) 3081swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3082 PROTOTYPE: $
2351 ALIAS: 3083 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3092
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3093 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3094 }
2363 3095
3096
2364MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
2365 3098
2366BOOT: 3099BOOT:
2367{ 3100{
2368 int i; 3101 int i;
2369 3102
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 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);
2376 3117
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3119
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2388 3129
2389 { 3130 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3132
2392 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
3134 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3139 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
2399 3141
2400 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
2403 } 3145 }
2404} 3146}
2405 3147
2406void 3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3152
3153void
2407schedule (...) 3154schedule (...)
2408 CODE: 3155 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 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);
2410 3167
2411void 3168void
2412cede (...) 3169cede (...)
2413 CODE: 3170 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3172
2416void 3173void
2417cede_notself (...) 3174cede_notself (...)
2418 CODE: 3175 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 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);
2420 3183
2421void 3184void
2422_set_current (SV *current) 3185_set_current (SV *current)
2423 PROTOTYPE: $ 3186 PROTOTYPE: $
2424 CODE: 3187 CODE:
… …
2427 3190
2428void 3191void
2429_set_readyhook (SV *hook) 3192_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3193 PROTOTYPE: $
2431 CODE: 3194 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3195 SvREFCNT_dec (coro_readyhook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3196 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
2436 3197
2437int 3198int
2438prio (Coro::State coro, int newprio = 0) 3199prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3200 PROTOTYPE: $;$
2440 ALIAS: 3201 ALIAS:
… …
2471 CODE: 3232 CODE:
2472 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
2473 OUTPUT: 3234 OUTPUT:
2474 RETVAL 3235 RETVAL
2475 3236
2476# for async_pool speedup
2477void 3237void
2478_pool_1 (SV *cb) 3238_pool_handler (...)
2479 CODE: 3239 CODE:
2480{ 3240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487
2488 if (!invoke)
2489 {
2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
2493 croak ("\3async_pool terminate\2\n");
2494 }
2495
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 {
2509 av_fill (defav, len - 1);
2510 for (i = 0; i < len; ++i)
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2512 }
2513}
2514 3241
2515void 3242void
2516_pool_2 (SV *cb) 3243async_pool (SV *cv, ...)
2517 CODE:
2518{
2519 struct coro *coro = SvSTATE (coro_current);
2520
2521 sv_setsv (cb, &PL_sv_undef);
2522
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = Coro::AIO
2549
2550void
2551_get_state (SV *self)
2552 PROTOTYPE: $ 3244 PROTOTYPE: &@
2553 PPCODE: 3245 PPCODE:
2554{ 3246{
2555 AV *defav = GvAV (PL_defgv); 3247 HV *hv = (HV *)av_pop (av_async_pool);
2556 AV *av = newAV (); 3248 AV *av = newAV ();
3249 SV *cb = ST (0);
2557 int i; 3250 int i;
2558 SV *data_sv = newSV (sizeof (struct io_state));
2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2560 SvCUR_set (data_sv, sizeof (struct io_state));
2561 SvPOK_only (data_sv);
2562 3251
2563 data->errorno = errno; 3252 av_extend (av, items - 2);
2564 data->laststype = PL_laststype; 3253 for (i = 1; i < items; ++i)
2565 data->laststatval = PL_laststatval;
2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
2572 3255
2573 av_push (av, data_sv); 3256 if ((SV *)hv == &PL_sv_undef)
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2578}
2579
2580void
2581_set_state (SV *state)
2582 PROTOTYPE: $
2583 PPCODE:
2584{
2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2588
2589 errno = data->errorno;
2590 PL_laststype = data->laststype;
2591 PL_laststatval = data->laststatval;
2592 PL_statcache = data->statcache;
2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 { 3257 {
2620 PUSHMARK (SP); 3258 PUSHMARK (SP);
3259 EXTEND (SP, 2);
3260 PUSHs (sv_Coro);
3261 PUSHs ((SV *)cv_pool_handler);
2621 PUTBACK; 3262 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2623 SPAGAIN; 3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2624 } 3267 }
2625 3268
2626 --incede; 3269 {
3270 struct coro *coro = SvSTATE_hv (hv);
3271
3272 assert (!coro->invoke_cb);
3273 assert (!coro->invoke_av);
3274 coro->invoke_cb = SvREFCNT_inc (cb);
3275 coro->invoke_av = av;
3276 }
3277
3278 api_ready (aTHX_ (SV *)hv);
3279
3280 if (GIMME_V != G_VOID)
3281 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3282 else
3283 SvREFCNT_dec (hv);
2627} 3284}
3285
3286SV *
3287rouse_cb ()
3288 PROTOTYPE:
3289 CODE:
3290 RETVAL = coro_new_rouse_cb (aTHX);
3291 OUTPUT:
3292 RETVAL
3293
3294void
3295rouse_wait (...)
3296 PROTOTYPE: ;$
3297 PPCODE:
3298 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2628 3299
2629 3300
2630MODULE = Coro::State PACKAGE = PerlIO::cede 3301MODULE = Coro::State PACKAGE = PerlIO::cede
2631 3302
2632BOOT: 3303BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 3305
3306
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 3307MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 3308
2637SV * 3309SV *
2638new (SV *klass, SV *count_ = 0) 3310new (SV *klass, SV *count = 0)
2639 CODE: 3311 CODE:
2640{ 3312 RETVAL = sv_bless (
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3313 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2642 AV *av = newAV (); 3314 GvSTASH (CvGV (cv))
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3315 );
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3316 OUTPUT:
2645} 3317 RETVAL
3318
3319# helper for Coro::Channel
3320SV *
3321_alloc (int count)
3322 CODE:
3323 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 3324 OUTPUT:
2647 RETVAL 3325 RETVAL
2648 3326
2649SV * 3327SV *
2650count (SV *self) 3328count (SV *self)
… …
2656void 3334void
2657up (SV *self, int adjust = 1) 3335up (SV *self, int adjust = 1)
2658 ALIAS: 3336 ALIAS:
2659 adjust = 1 3337 adjust = 1
2660 CODE: 3338 CODE:
2661{ 3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687 3340
2688void 3341void
2689down (SV *self) 3342down (...)
2690 CODE: 3343 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 3350
2693void 3351void
2694try (SV *self) 3352try (SV *self)
2695 PPCODE: 3353 PPCODE:
2696{ 3354{
… …
2708 XSRETURN_NO; 3366 XSRETURN_NO;
2709} 3367}
2710 3368
2711void 3369void
2712waiters (SV *self) 3370waiters (SV *self)
2713 CODE: 3371 PPCODE:
2714{ 3372{
2715 AV *av = (AV *)SvRV (self); 3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
2716 3375
2717 if (GIMME_V == G_SCALAR) 3376 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3377 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 3378 else
2720 { 3379 {
2721 int i; 3380 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 3381 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 3382 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 3384 }
2726} 3385}
2727 3386
3387MODULE = Coro::State PACKAGE = Coro::Signal
3388
3389SV *
3390new (SV *klass)
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:
3407{
3408 AV *av = (AV *)SvRV (self);
3409 coro_signal_wake (aTHX_ av, AvFILLp (av));
3410}
3411
3412void
3413send (SV *self)
3414 CODE:
3415{
3416 AV *av = (AV *)SvRV (self);
3417
3418 if (AvFILLp (av))
3419 coro_signal_wake (aTHX_ av, 1);
3420 else
3421 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3422}
3423
3424IV
3425awaited (SV *self)
3426 CODE:
3427 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3428 OUTPUT:
3429 RETVAL
3430
3431
3432MODULE = Coro::State PACKAGE = Coro::AnyEvent
3433
3434BOOT:
3435 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3436
3437void
3438_schedule (...)
3439 CODE:
3440{
3441 static int incede;
3442
3443 api_cede_notself (aTHX);
3444
3445 ++incede;
3446 while (coro_nready >= incede && api_cede (aTHX))
3447 ;
3448
3449 sv_setsv (sv_activity, &PL_sv_undef);
3450 if (coro_nready >= incede)
3451 {
3452 PUSHMARK (SP);
3453 PUTBACK;
3454 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3455 }
3456
3457 --incede;
3458}
3459
3460
3461MODULE = Coro::State PACKAGE = Coro::AIO
3462
3463void
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}
3473

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