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Comparing Coro/Coro/State.xs (file contents):
Revision 1.285 by root, Mon Nov 17 04:17:20 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static 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);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
172static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 184static SV *rv_diehook;
175static SV *rv_warnhook; 185static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
177 187
178/* async_pool helper stuff */ 188/* async_pool helper stuff */
179static SV *sv_pool_rss; 189static SV *sv_pool_rss;
180static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
181static 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;
182 196
183/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
184static SV *sv_activity; 198static SV *sv_activity;
185 199
186static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 229 int valgrind_id;
216#endif 230#endif
217 unsigned char flags; 231 unsigned char flags;
218} coro_cctx; 232} coro_cctx;
219 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
220enum { 238enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
246 /* state data */ 264 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 265 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 266 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 267 perl_slots *slot; /* basically the saved sp */
250 268
269 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 270 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 271 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 272 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 273 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 274 void (*on_destroy)(pTHX_ struct coro *coro);
256 275
257 /* statistics */ 276 /* statistics */
258 int usecount; /* number of transfers to this coro */ 277 int usecount; /* number of transfers to this coro */
259 278
260 /* coro process data */ 279 /* coro process data */
261 int prio; 280 int prio;
262 SV *throw; /* exception to be thrown */ 281 SV *except; /* exception to be thrown */
282 SV *rouse_cb;
263 283
264 /* async_pool */ 284 /* async_pool */
265 SV *saved_deffh; 285 SV *saved_deffh;
286 SV *invoke_cb;
287 AV *invoke_av;
266 288
267 /* linked list */ 289 /* linked list */
268 struct coro *next, *prev; 290 struct coro *next, *prev;
269}; 291};
270 292
… …
273 295
274/* the following variables are effectively part of the perl context */ 296/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 297/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 298/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 299static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 300
280/** Coro ********************************************************************/ 301/** Coro ********************************************************************/
281 302
282#define PRIO_MAX 3 303#define PRIO_MAX 3
283#define PRIO_HIGH 1 304#define PRIO_HIGH 1
… …
288 309
289/* for Coro.pm */ 310/* for Coro.pm */
290static SV *coro_current; 311static SV *coro_current;
291static SV *coro_readyhook; 312static SV *coro_readyhook;
292static 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;
293static struct coro *coro_first; 315static struct coro *coro_first;
294#define coro_nready coroapi.nready 316#define coro_nready coroapi.nready
295 317
296/** lowlevel stuff **********************************************************/ 318/** lowlevel stuff **********************************************************/
297 319
… …
323 get_hv (name, create); 345 get_hv (name, create);
324#endif 346#endif
325 return get_hv (name, create); 347 return get_hv (name, create);
326} 348}
327 349
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
328static AV * 359static AV *
329coro_clone_padlist (pTHX_ CV *cv) 360coro_derive_padlist (pTHX_ CV *cv)
330{ 361{
331 AV *padlist = CvPADLIST (cv); 362 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 363 AV *newpadlist, *newpad;
333 364
334 newpadlist = newAV (); 365 newpadlist = newAV ();
… …
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 415 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 416
386 return 0; 417 return 0;
387} 418}
388 419
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext 420#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext 421#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 422
392static MGVTBL coro_cv_vtbl = { 423static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 424 0, 0, 0, 0,
394 coro_cv_free 425 coro_cv_free
395}; 426};
396 427
428#define CORO_MAGIC_NN(sv, type) \
429 (expect_true (SvMAGIC (sv)->mg_type == type) \
430 ? SvMAGIC (sv) \
431 : mg_find (sv, type))
432
397#define CORO_MAGIC(sv, type) \ 433#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \ 434 (expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 435 ? CORO_MAGIC_NN (sv, type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0 436 : 0)
403 437
404#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)
405#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)
406 440
407INLINE struct coro * 441INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro) 442SvSTATE_ (pTHX_ SV *coro)
409{ 443{
410 HV *stash; 444 HV *stash;
… …
428 return (struct coro *)mg->mg_ptr; 462 return (struct coro *)mg->mg_ptr;
429} 463}
430 464
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 465#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432 466
433/* fastert than SvSTATE, but expects a coroutine hv */ 467/* faster than SvSTATE, but expects a coroutine hv */
434INLINE struct coro * 468#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 469#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 470
446/* the next two functions merely cache the padlists */ 471/* the next two functions merely cache the padlists */
447static void 472static void
448get_padlist (pTHX_ CV *cv) 473get_padlist (pTHX_ CV *cv)
… …
455 else 480 else
456 { 481 {
457#if CORO_PREFER_PERL_FUNCTIONS 482#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 483 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 484 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 485 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 486 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 487 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 488 SvREFCNT_dec (cp);
464#else 489#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 490 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 491#endif
467 } 492 }
468} 493}
469 494
470static void 495static void
… …
518 543
519 PUTBACK; 544 PUTBACK;
520 } 545 }
521 546
522 slf_frame = c->slf_frame; 547 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 548 CORO_THROW = c->except;
524} 549}
525 550
526static void 551static void
527save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
528{ 553{
529 c->throw = coro_throw; 554 c->except = CORO_THROW;
530 c->slf_frame = slf_frame; 555 c->slf_frame = slf_frame;
531 556
532 { 557 {
533 dSP; 558 dSP;
534 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
… …
609 * of perl.c:init_stacks, except that it uses less memory 634 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 635 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 636 * not usually need a lot of stackspace.
612 */ 637 */
613#if CORO_PREFER_PERL_FUNCTIONS 638#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 639# define coro_init_stacks(thx) init_stacks ()
615#else 640#else
616static void 641static void
617coro_init_stacks (pTHX) 642coro_init_stacks (pTHX)
618{ 643{
619 PL_curstackinfo = new_stackinfo(32, 8); 644 PL_curstackinfo = new_stackinfo(32, 8);
… …
682#if !PERL_VERSION_ATLEAST (5,10,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 708 Safefree (PL_retstack);
684#endif 709#endif
685} 710}
686 711
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
687static size_t 721static size_t
688coro_rss (pTHX_ struct coro *coro) 722coro_rss (pTHX_ struct coro *coro)
689{ 723{
690 size_t rss = sizeof (*coro); 724 size_t rss = sizeof (*coro);
691 725
692 if (coro->mainstack) 726 if (coro->mainstack)
693 { 727 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 728 if (coro->flags & CF_RUNNING)
698 { 729 {
699 slot = &tmp_slot; 730 #define SYM(sym) PL_ ## sym
700 731 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 732 #undef SYM
704 } 733 }
705 else 734 else
706 slot = coro->slot;
707
708 if (slot)
709 { 735 {
710 rss += sizeof (slot->curstackinfo); 736 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 737 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 738 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 739 }
722 } 740 }
723 741
724 return rss; 742 return rss;
725} 743}
… …
827slf_check_nop (pTHX_ struct CoroSLF *frame) 845slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 846{
829 return 0; 847 return 0;
830} 848}
831 849
850static int
851slf_check_repeat (pTHX_ struct CoroSLF *frame)
852{
853 return 1;
854}
855
856static UNOP coro_setup_op;
857
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 858static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 859coro_setup (pTHX_ struct coro *coro)
834{ 860{
835 /* 861 /*
836 * emulate part of the perl startup here. 862 * emulate part of the perl startup here.
… …
864 { 890 {
865 dSP; 891 dSP;
866 UNOP myop; 892 UNOP myop;
867 893
868 Zero (&myop, 1, UNOP); 894 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 895 myop.op_next = Nullop;
896 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 897 myop.op_flags = OPf_WANT_VOID;
871 898
872 PUSHMARK (SP); 899 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 900 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 901 PUTBACK;
875 PL_op = (OP *)&myop; 902 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 903 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 904 }
879 905
880 /* 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
881 * 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.
882 */ 908 */
883 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 */
884 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 */
885 911
886 coro_throw = coro->throw; 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;
887} 922}
888 923
889static void 924static void
890coro_destruct (pTHX_ struct coro *coro) 925coro_destruct (pTHX_ struct coro *coro)
891{ 926{
… …
915 950
916 SvREFCNT_dec (PL_diehook); 951 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook); 952 SvREFCNT_dec (PL_warnhook);
918 953
919 SvREFCNT_dec (coro->saved_deffh); 954 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 955 SvREFCNT_dec (coro->rouse_cb);
956 SvREFCNT_dec (coro->invoke_cb);
957 SvREFCNT_dec (coro->invoke_av);
921 958
922 coro_destruct_stacks (aTHX); 959 coro_destruct_stacks (aTHX);
923} 960}
924 961
925INLINE void 962INLINE void
… …
935static int 972static int
936runops_trace (pTHX) 973runops_trace (pTHX)
937{ 974{
938 COP *oldcop = 0; 975 COP *oldcop = 0;
939 int oldcxix = -2; 976 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 977
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 978 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 979 {
945 PERL_ASYNC_CHECK (); 980 PERL_ASYNC_CHECK ();
946 981
947 if (cctx->flags & CC_TRACE_ALL) 982 if (cctx_current->flags & CC_TRACE_ALL)
948 { 983 {
949 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)
950 { 985 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 986 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 987 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 988 AV *av = newAV (); /* return values */
954 SV **cb; 989 SV **cb;
… …
991 1026
992 if (PL_curcop != &PL_compiling) 1027 if (PL_curcop != &PL_compiling)
993 { 1028 {
994 SV **cb; 1029 SV **cb;
995 1030
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1031 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1032 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1033 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1034
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1035 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1036 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1037 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1038 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1039 SV *fullname = sv_2mortal (newSV (0));
1006 1040
1007 if (isGV (gv)) 1041 if (isGV (gv))
… …
1012 SAVETMPS; 1046 SAVETMPS;
1013 EXTEND (SP, 3); 1047 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1048 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1049 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1050 PUSHs (fullname);
1017 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);
1018 PUTBACK; 1052 PUTBACK;
1019 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);
1020 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);
1021 SPAGAIN; 1055 SPAGAIN;
1022 FREETMPS; 1056 FREETMPS;
… …
1025 } 1059 }
1026 1060
1027 oldcxix = cxstack_ix; 1061 oldcxix = cxstack_ix;
1028 } 1062 }
1029 1063
1030 if (cctx->flags & CC_TRACE_LINE) 1064 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1065 {
1032 dSP; 1066 dSP;
1033 1067
1034 PL_runops = RUNOPS_DEFAULT; 1068 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1069 ENTER;
… …
1054 1088
1055 TAINT_NOT; 1089 TAINT_NOT;
1056 return 0; 1090 return 0;
1057} 1091}
1058 1092
1093static struct CoroSLF cctx_ssl_frame;
1094
1059static void 1095static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1097{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1098 ta->prev = 0;
1064} 1099}
1065 1100
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1101static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1102slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1103{
1069/* 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 */
1070static void NOINLINE 1110static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1111cctx_prepare (pTHX)
1072{ 1112{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1113 PL_top_env = &PL_start_env;
1077 1114
1078 if (cctx->flags & CC_TRACE) 1115 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1116 PL_runops = runops_trace;
1080 1117
1081 Zero (&myop, 1, UNOP); 1118 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1119 * that can lead to creation of a new cctx */
1083 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));
1084 1122
1085 PUSHMARK (SP); 1123 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1124 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1125
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1126 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1127 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1128}
1094 1129
1095/* 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 */
1096INLINE void 1131INLINE void
1097transfer_tail (pTHX) 1132transfer_tail (pTHX)
… …
1116 /* normally we would need to skip the entersub here */ 1151 /* normally we would need to skip the entersub here */
1117 /* 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 */
1118 /* PL_nop = PL_nop->op_next */ 1153 /* PL_nop = PL_nop->op_next */
1119 1154
1120 /* inject a fake subroutine call to cctx_init */ 1155 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1156 cctx_prepare (aTHX);
1122 1157
1123 /* cctx_run is the alternative tail of transfer() */ 1158 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1159 transfer_tail (aTHX);
1125 1160
1126 /* 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 */
1127 PL_restartop = PL_op; 1162 PL_restartop = PL_op;
1128 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 */
1129 1168
1130 /* 1169 /*
1131 * 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
1132 * 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)
1133 * 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
… …
1217cctx_destroy (coro_cctx *cctx) 1256cctx_destroy (coro_cctx *cctx)
1218{ 1257{
1219 if (!cctx) 1258 if (!cctx)
1220 return; 1259 return;
1221 1260
1261 assert (cctx != cctx_current);//D temporary
1262
1222 --cctx_count; 1263 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1264 coro_destroy (&cctx->cctx);
1224 1265
1225 /* coro_transfer creates new, empty cctx's */ 1266 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1267 if (cctx->sptr)
… …
1289 /* TODO: throwing up here is considered harmful */ 1330 /* TODO: throwing up here is considered harmful */
1290 1331
1291 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1292 { 1333 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 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,");
1295 1336
1296 if (expect_false (next->flags & CF_RUNNING)) 1337 if (expect_false (next->flags & CF_RUNNING))
1297 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,");
1298 1339
1299 if (expect_false (next->flags & CF_DESTROYED)) 1340 if (expect_false (next->flags & CF_DESTROYED))
… …
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1353{
1313 dSTACKLEVEL; 1354 dSTACKLEVEL;
1314 1355
1315 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1357 if (expect_false (!prev))
1317 { 1358 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1359 cctx_current->idle_sp = STACKLEVEL;
1319 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 */
1320 } 1361 }
1321 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1322 { 1363 {
1323 coro_cctx *prev__cctx; 1364 coro_cctx *cctx_prev;
1324 1365
1325 if (expect_false (prev->flags & CF_NEW)) 1366 if (expect_false (prev->flags & CF_NEW))
1326 { 1367 {
1327 /* create a new empty/source context */ 1368 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1369 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1370 prev->flags |= CF_RUNNING;
1331 } 1371 }
1332 1372
1333 prev->flags &= ~CF_RUNNING; 1373 prev->flags &= ~CF_RUNNING;
… …
1344 coro_setup (aTHX_ next); 1384 coro_setup (aTHX_ next);
1345 } 1385 }
1346 else 1386 else
1347 load_perl (aTHX_ next); 1387 load_perl (aTHX_ next);
1348 1388
1349 prev__cctx = prev->cctx; 1389 assert (!prev->cctx);//D temporary
1350 1390
1351 /* possibly untie and reuse the cctx */ 1391 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1392 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1393 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1394 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1395 && !force_cctx
1356 )) 1396 ))
1357 { 1397 {
1358 /* 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 */
1359 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));
1360 1400
1361 prev->cctx = 0;
1362
1363 /* 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. */
1364 /* 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 */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1403 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1404 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1405 next->cctx = cctx_get (aTHX);
1368 1406
1369 cctx_put (prev__cctx); 1407 cctx_put (cctx_current);
1370 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1371 1411
1372 ++next->usecount; 1412 ++next->usecount;
1373 1413
1374 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1416
1377 if (expect_false (prev__cctx != next->cctx)) 1417 next->cctx = 0;
1418
1419 if (expect_false (cctx_prev != cctx_current))
1378 { 1420 {
1379 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1424 }
1383 1425
1384 transfer_tail (aTHX); 1426 transfer_tail (aTHX);
1385 } 1427 }
1386} 1428}
… …
1425 1467
1426 coro->slot = 0; 1468 coro->slot = 0;
1427 } 1469 }
1428 1470
1429 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1430 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1431 1475
1432 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1435 1479
… …
1489 1533
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1492} 1536}
1493 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
1494/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1495 1562
1496INLINE void 1563INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1564coro_enq (pTHX_ struct coro *coro)
1498{ 1565{
… …
1516{ 1583{
1517 struct coro *coro; 1584 struct coro *coro;
1518 SV *sv_hook; 1585 SV *sv_hook;
1519 void (*xs_hook)(void); 1586 void (*xs_hook)(void);
1520 1587
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1588 coro = SvSTATE (coro_sv);
1525 1589
1526 if (coro->flags & CF_READY) 1590 if (coro->flags & CF_READY)
1527 return 0; 1591 return 0;
1528 1592
… …
1541 ENTER; 1605 ENTER;
1542 SAVETMPS; 1606 SAVETMPS;
1543 1607
1544 PUSHMARK (SP); 1608 PUSHMARK (SP);
1545 PUTBACK; 1609 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1610 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1611
1549 FREETMPS; 1612 FREETMPS;
1550 LEAVE; 1613 LEAVE;
1551 } 1614 }
1552 1615
… …
1560api_is_ready (pTHX_ SV *coro_sv) 1623api_is_ready (pTHX_ SV *coro_sv)
1561{ 1624{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1625 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1626}
1564 1627
1628/* expects to own a reference to next->hv */
1565INLINE void 1629INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1630prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1631{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1632 SV *prev_sv = SvRV (coro_current);
1633
1608 ta->prev = SvSTATE_hv (prev_sv); 1634 ta->prev = SvSTATE_hv (prev_sv);
1635 ta->next = next;
1636
1609 TRANSFER_CHECK (*ta); 1637 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1638
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1639 SvRV_set (coro_current, (SV *)next->hv);
1613 1640
1614 free_coro_mortal (aTHX); 1641 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1642 coro_mortal = prev_sv;
1616} 1643}
1617 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 }
1694}
1695
1618INLINE void 1696INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1697prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1698{
1621 api_ready (aTHX_ coro_current); 1699 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1700 prepare_schedule (aTHX_ ta);
… …
1641{ 1719{
1642 struct coro_transfer_args ta; 1720 struct coro_transfer_args ta;
1643 1721
1644 prepare_schedule (aTHX_ &ta); 1722 prepare_schedule (aTHX_ &ta);
1645 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);
1646} 1734}
1647 1735
1648static int 1736static int
1649api_cede (pTHX) 1737api_cede (pTHX)
1650{ 1738{
… …
1679static void 1767static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1768api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1769{
1682 struct coro *coro = SvSTATE (coro_sv); 1770 struct coro *coro = SvSTATE (coro_sv);
1683 1771
1772 if (coro->flags & CF_RUNNING)
1773 croak ("cannot enable tracing on a running coroutine, caught");
1774
1684 if (flags & CC_TRACE) 1775 if (flags & CC_TRACE)
1685 { 1776 {
1686 if (!coro->cctx) 1777 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1778 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1779 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1780 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 1781
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1782 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 1783 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1784 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 1785 {
… …
1697 if (coro->flags & CF_RUNNING) 1788 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 1789 PL_runops = RUNOPS_DEFAULT;
1699 else 1790 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 1791 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 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;
1702} 2274}
1703 2275
1704/*****************************************************************************/ 2276/*****************************************************************************/
1705/* PerlIO::cede */ 2277/* PerlIO::cede */
1706 2278
… …
1775 PerlIOBuf_get_cnt, 2347 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2348 PerlIOBuf_set_ptrcnt,
1777}; 2349};
1778 2350
1779/*****************************************************************************/ 2351/*****************************************************************************/
2352/* Coro::Semaphore & Coro::Signal */
1780 2353
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2354static SV *
1791pp_restore (pTHX) 2355coro_waitarray_new (pTHX_ int count)
1792{ 2356{
1793 int i; 2357 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2358 AV *av = newAV ();
2359 SV **ary;
1795 2360
1796 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);
1797 2369
1798 EXTEND (SP, slf_argc + 1); 2370 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2371}
1807 2372
1808static void 2373/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006 2374
2007static void 2375static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2376coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{ 2377{
2010 SV *count_sv = AvARRAY (av)[0]; 2378 SV *count_sv = AvARRAY (av)[0];
… …
2022 AvARRAY (av)[0] = AvARRAY (av)[1]; 2390 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv; 2391 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av); 2392 cb = av_shift (av);
2025 2393
2026 if (SvOBJECT (cb)) 2394 if (SvOBJECT (cb))
2395 {
2027 api_ready (aTHX_ cb); 2396 api_ready (aTHX_ cb);
2028 else 2397 --count;
2029 croak ("callbacks not yet supported"); 2398 }
2399 else if (SvTYPE (cb) == SVt_PVCV)
2400 {
2401 dSP;
2402 PUSHMARK (SP);
2403 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2404 PUTBACK;
2405 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2406 }
2030 2407
2031 SvREFCNT_dec (cb); 2408 SvREFCNT_dec (cb);
2032
2033 --count;
2034 } 2409 }
2035} 2410}
2036 2411
2037static void 2412static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2413coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2415 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2416 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042} 2417}
2043 2418
2044static int 2419static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2420slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2046{ 2421{
2047 AV *av = (AV *)frame->data; 2422 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0]; 2423 SV *count_sv = AvARRAY (av)[0];
2049 2424
2425 /* if we are about to throw, don't actually acquire the lock, just throw */
2426 if (CORO_THROW)
2427 return 0;
2050 if (SvIVX (count_sv) > 0) 2428 else if (SvIVX (count_sv) > 0)
2051 { 2429 {
2052 SvSTATE_current->on_destroy = 0; 2430 SvSTATE_current->on_destroy = 0;
2431
2432 if (acquire)
2053 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
2054 return 0; 2437 return 0;
2055 } 2438 }
2056 else 2439 else
2057 { 2440 {
2058 int i; 2441 int i;
… …
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2450 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1; 2451 return 1;
2069 } 2452 }
2070} 2453}
2071 2454
2072static 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
2073slf_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)
2074{ 2469{
2075 AV *av = (AV *)SvRV (arg [0]); 2470 AV *av = (AV *)SvRV (arg [0]);
2076 2471
2077 if (SvIVX (AvARRAY (av)[0]) > 0) 2472 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 { 2473 {
2079 frame->data = (void *)av; 2474 frame->data = (void *)av;
2080 frame->prepare = prepare_nop; 2475 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 } 2476 }
2083 else 2477 else
2084 { 2478 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2479 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086 2480
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2481 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule; 2482 frame->prepare = prepare_schedule;
2089 2483
2090 /* to avoid race conditions when a woken-up coro gets terminated */ 2484 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2485 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2486 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 } 2487 }
2488}
2095 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);
2096 frame->check = slf_check_semaphore_down; 2494 frame->check = slf_check_semaphore_down;
2495}
2097 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 }
2098} 2576}
2099 2577
2100/*****************************************************************************/ 2578/*****************************************************************************/
2579/* Coro::AIO */
2101 2580
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2581#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2103 2582
2104/* create a closure from XS, returns a code reference */ 2583/* helper storage struct */
2105/* the arg can be accessed via GENSUB_ARG from the callback */ 2584struct io_state
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{ 2585{
2110 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};
2111 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
2112 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);
2113 2605
2114 CvANON_on (cv); 2606 {
2115 CvISXSUB_on (cv); 2607 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118 2608
2119 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;
2120} 2741}
2121 2742
2122/*****************************************************************************/ 2743/*****************************************************************************/
2744
2745#if CORO_CLONE
2746# include "clone.c"
2747#endif
2123 2748
2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2125 2750
2126PROTOTYPES: DISABLE 2751PROTOTYPES: DISABLE
2127 2752
… …
2132 coro_thx = PERL_GET_CONTEXT; 2757 coro_thx = PERL_GET_CONTEXT;
2133# endif 2758# endif
2134#endif 2759#endif
2135 BOOT_PAGESIZE; 2760 BOOT_PAGESIZE;
2136 2761
2762 cctx_current = cctx_new_empty ();
2763
2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2764 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2765 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2139 2766
2140 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;
2141 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2768 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2160 2787
2161 { 2788 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2789 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163 2790
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2791 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf, 2792 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2166 newSVpv ("coro_slf", 0), 0);
2167 2793
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2794 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf, 2795 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2170 newSVpv ("coro schedule like function", 0), 0);
2171 } 2796 }
2172 2797
2173 coroapi.ver = CORO_API_VERSION; 2798 coroapi.ver = CORO_API_VERSION;
2174 coroapi.rev = CORO_API_REVISION; 2799 coroapi.rev = CORO_API_REVISION;
2175 2800
… …
2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2819 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2195} 2820}
2196 2821
2197SV * 2822SV *
2198new (char *klass, ...) 2823new (char *klass, ...)
2824 ALIAS:
2825 Coro::new = 1
2199 CODE: 2826 CODE:
2200{ 2827{
2201 struct coro *coro; 2828 struct coro *coro;
2202 MAGIC *mg; 2829 MAGIC *mg;
2203 HV *hv; 2830 HV *hv;
2831 CV *cb;
2204 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 }
2205 2847
2206 Newz (0, coro, 1, struct coro); 2848 Newz (0, coro, 1, struct coro);
2207 coro->args = newAV (); 2849 coro->args = newAV ();
2208 coro->flags = CF_NEW; 2850 coro->flags = CF_NEW;
2209 2851
… …
2214 coro->hv = hv = newHV (); 2856 coro->hv = hv = newHV ();
2215 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);
2216 mg->mg_flags |= MGf_DUP; 2858 mg->mg_flags |= MGf_DUP;
2217 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2859 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2218 2860
2861 if (items > 1)
2862 {
2219 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
2220 for (i = 1; i < items; i++) 2873 for (i = 2; i < items; i++)
2221 av_push (coro->args, newSVsv (ST (i))); 2874 av_push (coro->args, newSVsv (ST (i)));
2875 }
2222} 2876}
2223 OUTPUT: 2877 OUTPUT:
2224 RETVAL 2878 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230 2879
2231void 2880void
2232transfer (...) 2881transfer (...)
2233 PROTOTYPE: $$ 2882 PROTOTYPE: $$
2234 CODE: 2883 CODE:
… …
2244void 2893void
2245_exit (int code) 2894_exit (int code)
2246 PROTOTYPE: $ 2895 PROTOTYPE: $
2247 CODE: 2896 CODE:
2248 _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
2249 2917
2250int 2918int
2251cctx_stacksize (int new_stacksize = 0) 2919cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$ 2920 PROTOTYPE: ;$
2253 CODE: 2921 CODE:
… …
2360throw (Coro::State self, SV *throw = &PL_sv_undef) 3028throw (Coro::State self, SV *throw = &PL_sv_undef)
2361 PROTOTYPE: $;$ 3029 PROTOTYPE: $;$
2362 CODE: 3030 CODE:
2363{ 3031{
2364 struct coro *current = SvSTATE_current; 3032 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw; 3033 SV **throwp = self == current ? &CORO_THROW : &self->except;
2366 SvREFCNT_dec (*throwp); 3034 SvREFCNT_dec (*throwp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3035 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368} 3036}
2369 3037
2370void 3038void
… …
2374 3042
2375SV * 3043SV *
2376has_cctx (Coro::State coro) 3044has_cctx (Coro::State coro)
2377 PROTOTYPE: $ 3045 PROTOTYPE: $
2378 CODE: 3046 CODE:
2379 RETVAL = boolSV (!!coro->cctx); 3047 /* maybe manage the running flag differently */
3048 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2380 OUTPUT: 3049 OUTPUT:
2381 RETVAL 3050 RETVAL
2382 3051
2383int 3052int
2384is_traced (Coro::State coro) 3053is_traced (Coro::State coro)
… …
2404 3073
2405void 3074void
2406force_cctx () 3075force_cctx ()
2407 PROTOTYPE: 3076 PROTOTYPE:
2408 CODE: 3077 CODE:
2409 SvSTATE_current->cctx->idle_sp = 0; 3078 cctx_current->idle_sp = 0;
2410 3079
2411void 3080void
2412swap_defsv (Coro::State self) 3081swap_defsv (Coro::State self)
2413 PROTOTYPE: $ 3082 PROTOTYPE: $
2414 ALIAS: 3083 ALIAS:
… …
2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2423 3092
2424 SV *tmp = *src; *src = *dst; *dst = tmp; 3093 SV *tmp = *src; *src = *dst; *dst = tmp;
2425 } 3094 }
2426 3095
3096
2427MODULE = Coro::State PACKAGE = Coro 3097MODULE = Coro::State PACKAGE = Coro
2428 3098
2429BOOT: 3099BOOT:
2430{ 3100{
2431 int i; 3101 int i;
2432 3102
2433 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2434 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2435 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2436 3105 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3106 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2437 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3107 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2438 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);
2439 3117
2440 coro_stash = gv_stashpv ("Coro", TRUE); 3118 coro_stash = gv_stashpv ("Coro", TRUE);
2441 3119
2442 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3120 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2443 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3121 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2451 3129
2452 { 3130 {
2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3131 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2454 3132
2455 coroapi.schedule = api_schedule; 3133 coroapi.schedule = api_schedule;
3134 coroapi.schedule_to = api_schedule_to;
2456 coroapi.cede = api_cede; 3135 coroapi.cede = api_cede;
2457 coroapi.cede_notself = api_cede_notself; 3136 coroapi.cede_notself = api_cede_notself;
2458 coroapi.ready = api_ready; 3137 coroapi.ready = api_ready;
2459 coroapi.is_ready = api_is_ready; 3138 coroapi.is_ready = api_is_ready;
2460 coroapi.nready = coro_nready; 3139 coroapi.nready = coro_nready;
2461 coroapi.current = coro_current; 3140 coroapi.current = coro_current;
2462 3141
2463 GCoroAPI = &coroapi; 3142 /*GCoroAPI = &coroapi;*/
2464 sv_setiv (sv, (IV)&coroapi); 3143 sv_setiv (sv, (IV)&coroapi);
2465 SvREADONLY_on (sv); 3144 SvREADONLY_on (sv);
2466 } 3145 }
2467} 3146}
3147
3148void
3149terminate (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2468 3152
2469void 3153void
2470schedule (...) 3154schedule (...)
2471 CODE: 3155 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3156 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473 3157
2474void 3158void
3159schedule_to (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3162
3163void
3164cede_to (...)
3165 CODE:
3166 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3167
3168void
2475cede (...) 3169cede (...)
2476 CODE: 3170 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede); 3171 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478 3172
2479void 3173void
2480cede_notself (...) 3174cede_notself (...)
2481 CODE: 3175 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 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);
2483 3183
2484void 3184void
2485_set_current (SV *current) 3185_set_current (SV *current)
2486 PROTOTYPE: $ 3186 PROTOTYPE: $
2487 CODE: 3187 CODE:
… …
2532 CODE: 3232 CODE:
2533 RETVAL = coro_nready; 3233 RETVAL = coro_nready;
2534 OUTPUT: 3234 OUTPUT:
2535 RETVAL 3235 RETVAL
2536 3236
2537# for async_pool speedup
2538void 3237void
2539_pool_1 (SV *cb) 3238_pool_handler (...)
2540 CODE: 3239 CODE:
2541{ 3240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2544 AV *defav = GvAV (PL_defgv);
2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2546 AV *invoke_av;
2547 int i, len;
2548
2549 if (!invoke)
2550 {
2551 SV *old = PL_diehook;
2552 PL_diehook = 0;
2553 SvREFCNT_dec (old);
2554 croak ("\3async_pool terminate\2\n");
2555 }
2556
2557 SvREFCNT_dec (coro->saved_deffh);
2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2559
2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2562
2563 invoke_av = (AV *)SvRV (invoke);
2564 len = av_len (invoke_av);
2565
2566 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2567
2568 if (len > 0)
2569 {
2570 av_fill (defav, len - 1);
2571 for (i = 0; i < len; ++i)
2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2573 }
2574}
2575 3241
2576void 3242void
2577_pool_2 (SV *cb) 3243async_pool (SV *cv, ...)
2578 CODE:
2579{
2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
2582
2583 sv_setsv (cb, &PL_sv_undef);
2584
2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2586 coro->saved_deffh = 0;
2587
2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2590 {
2591 SV *old = PL_diehook;
2592 PL_diehook = 0;
2593 SvREFCNT_dec (old);
2594 croak ("\3async_pool terminate\2\n");
2595 }
2596
2597 av_clear (GvAV (PL_defgv));
2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2600
2601 coro->prio = 0;
2602
2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2604 api_trace (aTHX_ coro_current, 0);
2605
2606 av_push (av_async_pool, newSVsv (coro_current));
2607}
2608
2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2611
2612void
2613_get_state (SV *self)
2614 PROTOTYPE: $ 3244 PROTOTYPE: &@
2615 PPCODE: 3245 PPCODE:
2616{ 3246{
2617 AV *defav = GvAV (PL_defgv); 3247 HV *hv = (HV *)av_pop (av_async_pool);
2618 AV *av = newAV (); 3248 AV *av = newAV ();
3249 SV *cb = ST (0);
2619 int i; 3250 int i;
2620 SV *data_sv = newSV (sizeof (struct io_state));
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622 SvCUR_set (data_sv, sizeof (struct io_state));
2623 SvPOK_only (data_sv);
2624 3251
2625 data->errorno = errno; 3252 av_extend (av, items - 2);
2626 data->laststype = PL_laststype; 3253 for (i = 1; i < items; ++i)
2627 data->laststatval = PL_laststatval;
2628 data->statcache = PL_statcache;
2629
2630 av_extend (av, AvFILLp (defav) + 1 + 1);
2631
2632 for (i = 0; i <= AvFILLp (defav); ++i)
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3254 av_push (av, SvREFCNT_inc_NN (ST (i)));
2634 3255
2635 av_push (av, data_sv); 3256 if ((SV *)hv == &PL_sv_undef)
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2640}
2641
2642void
2643_set_state (SV *state)
2644 PROTOTYPE: $
2645 PPCODE:
2646{
2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2650
2651 errno = data->errorno;
2652 PL_laststype = data->laststype;
2653 PL_laststatval = data->laststatval;
2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2659}
2660
2661
2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2663
2664BOOT:
2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2666
2667void
2668_schedule (...)
2669 CODE:
2670{
2671 static int incede;
2672
2673 api_cede_notself (aTHX);
2674
2675 ++incede;
2676 while (coro_nready >= incede && api_cede (aTHX))
2677 ;
2678
2679 sv_setsv (sv_activity, &PL_sv_undef);
2680 if (coro_nready >= incede)
2681 { 3257 {
2682 PUSHMARK (SP); 3258 PUSHMARK (SP);
3259 EXTEND (SP, 2);
3260 PUSHs (sv_Coro);
3261 PUSHs ((SV *)cv_pool_handler);
2683 PUTBACK; 3262 PUTBACK;
2684 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3263 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2685 SPAGAIN; 3264 SPAGAIN;
3265
3266 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2686 } 3267 }
2687 3268
2688 --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);
2689} 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);
2690 3299
2691 3300
2692MODULE = Coro::State PACKAGE = PerlIO::cede 3301MODULE = Coro::State PACKAGE = PerlIO::cede
2693 3302
2694BOOT: 3303BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3304 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696 3305
3306
2697MODULE = Coro::State PACKAGE = Coro::Semaphore 3307MODULE = Coro::State PACKAGE = Coro::Semaphore
2698 3308
2699SV * 3309SV *
2700new (SV *klass, SV *count_ = 0) 3310new (SV *klass, SV *count = 0)
2701 CODE: 3311 CODE:
2702{ 3312 RETVAL = sv_bless (
2703 /* 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),
2704 AV *av = newAV (); 3314 GvSTASH (CvGV (cv))
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3315 );
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3316 OUTPUT:
2707} 3317 RETVAL
3318
3319# helper for Coro::Channel
3320SV *
3321_alloc (int count)
3322 CODE:
3323 RETVAL = coro_waitarray_new (aTHX_ count);
2708 OUTPUT: 3324 OUTPUT:
2709 RETVAL 3325 RETVAL
2710 3326
2711SV * 3327SV *
2712count (SV *self) 3328count (SV *self)
… …
2721 adjust = 1 3337 adjust = 1
2722 CODE: 3338 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3339 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724 3340
2725void 3341void
2726down (SV *self) 3342down (...)
2727 CODE: 3343 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3344 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3345
3346void
3347wait (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2729 3350
2730void 3351void
2731try (SV *self) 3352try (SV *self)
2732 PPCODE: 3353 PPCODE:
2733{ 3354{
… …
2745 XSRETURN_NO; 3366 XSRETURN_NO;
2746} 3367}
2747 3368
2748void 3369void
2749waiters (SV *self) 3370waiters (SV *self)
2750 CODE: 3371 PPCODE:
2751{ 3372{
2752 AV *av = (AV *)SvRV (self); 3373 AV *av = (AV *)SvRV (self);
3374 int wcount = AvFILLp (av) + 1 - 1;
2753 3375
2754 if (GIMME_V == G_SCALAR) 3376 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3377 XPUSHs (sv_2mortal (newSViv (wcount)));
2756 else 3378 else
2757 { 3379 {
2758 int i; 3380 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1); 3381 EXTEND (SP, wcount);
2760 for (i = 1; i <= AvFILLp (av); ++i) 3382 for (i = 1; i <= wcount; ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i])); 3383 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2762 } 3384 }
2763} 3385}
2764 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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