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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.310 by root, Wed Nov 19 16:01:32 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
… …
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
100 103
101/* 5.8.7 */ 104/* 5.8.7 */
102#ifndef SvRV_set 105#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 107#endif
… …
117#endif 120#endif
118 121
119/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 123 * portable way as possible. */
121#if __GNUC__ >= 4 124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 126# define STACKLEVEL __builtin_frame_address (0)
123#else 127#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel)
125#endif 130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#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 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#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};
176 157
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 171
188static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 174static SV *rv_diehook;
191static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
252#undef VAR 236#undef VAR
253} perl_slots; 237} perl_slots;
254 238
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 240
257/* this is the per-perl-coro slf frame info */
258/* it is treated like other "global" interpreter data */
259/* and unfortunately is copied around, so kepe it small */
260struct slf_frame
261{
262 void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263 int (*check) (pTHX);
264};
265
266/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
267struct coro { 242struct coro {
268 /* the C coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
269 coro_cctx *cctx; 244 coro_cctx *cctx;
270 245
271 /* process data */ 246 /* state data */
272 struct slf_frame slf_frame; /* saved slf frame */ 247 struct CoroSLF slf_frame; /* saved slf frame */
273 void *slf_data;
274 AV *mainstack; 248 AV *mainstack;
275 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
276 250
251 CV *startcv; /* the CV to execute */
277 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
278 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
279 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
280 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
281 257
282 /* statistics */ 258 /* statistics */
283 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
284 260
285 /* coro process data */ 261 /* coro process data */
286 int prio; 262 int prio;
287 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
288 265
289 /* async_pool */ 266 /* async_pool */
290 SV *saved_deffh; 267 SV *saved_deffh;
291 268
292 /* linked list */ 269 /* linked list */
… …
294}; 271};
295 272
296typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
297typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
298 275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
299static struct slf_frame slf_frame; /* the current slf frame */ 279static struct CoroSLF slf_frame; /* the current slf frame */
300 280
301/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
302 282
303#define PRIO_MAX 3 283#define PRIO_MAX 3
304#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
309 289
310/* for Coro.pm */ 290/* for Coro.pm */
311static SV *coro_current; 291static SV *coro_current;
312static SV *coro_readyhook; 292static SV *coro_readyhook;
313static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
294static CV *cv_coro_run;
314static struct coro *coro_first; 295static struct coro *coro_first;
315#define coro_nready coroapi.nready 296#define coro_nready coroapi.nready
316 297
317/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
318 299
… …
342#if PERL_VERSION_ATLEAST (5,10,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
343 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
344 get_hv (name, create); 325 get_hv (name, create);
345#endif 326#endif
346 return get_hv (name, create); 327 return get_hv (name, create);
328}
329
330/* may croak */
331INLINE CV *
332coro_sv_2cv (SV *sv)
333{
334 HV *st;
335 GV *gvp;
336 return sv_2cv (sv, &st, &gvp, 0);
347} 337}
348 338
349static AV * 339static AV *
350coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
351{ 341{
… …
405 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406 396
407 return 0; 397 return 0;
408} 398}
409 399
410#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv 26
411#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
412 402
413static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
414 0, 0, 0, 0, 404 0, 0, 0, 0,
415 coro_cv_free 405 coro_cv_free
416}; 406};
417 407
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
418#define CORO_MAGIC(sv, type) \ 413#define CORO_MAGIC(sv, type) \
419 SvMAGIC (sv) \ 414 (expect_true (SvMAGIC (sv)) \
420 ? SvMAGIC (sv)->mg_type == type \ 415 ? CORO_MAGIC_NN (sv, type) \
421 ? SvMAGIC (sv) \
422 : mg_find (sv, type) \
423 : 0 416 : 0)
424 417
425#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
427 420
428INLINE struct coro * 421INLINE struct coro *
429SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
430{ 423{
431 HV *stash; 424 HV *stash;
… …
448 mg = CORO_MAGIC_state (coro); 441 mg = CORO_MAGIC_state (coro);
449 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
450} 443}
451 444
452#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
453 450
454/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
455static void 452static void
456get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
457{ 454{
… …
463 else 460 else
464 { 461 {
465#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
466 /* this is probably cleaner? but also slower! */ 463 /* this is probably cleaner? but also slower! */
467 /* in practise, it seems to be less stable */ 464 /* in practise, it seems to be less stable */
468 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
469 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
470 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
471 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
472#else 469#else
473 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
525 } 522 }
526 523
527 PUTBACK; 524 PUTBACK;
528 } 525 }
529 526
530 slf_frame = c->slf_frame; 527 slf_frame = c->slf_frame;
531 coroapi.slf_data = c->slf_data; 528 CORO_THROW = c->except;
532} 529}
533 530
534static void 531static void
535save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
536{ 533{
537 c->slf_data = coroapi.slf_data; 534 c->except = CORO_THROW;
538 c->slf_frame = slf_frame; 535 c->slf_frame = slf_frame;
539 536
540 { 537 {
541 dSP; 538 dSP;
542 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
… …
617 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
618 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
619 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
620 */ 617 */
621#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
622# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
623#else 620#else
624static void 621static void
625coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
626{ 623{
627 PL_curstackinfo = new_stackinfo(32, 8); 624 PL_curstackinfo = new_stackinfo(32, 8);
… …
823 820
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 822}
826 823
827static void 824static void
828prepare_nop (aTHX_ struct coro_transfer_args *ta) 825prepare_nop (pTHX_ struct coro_transfer_args *ta)
829{ 826{
830 /* kind of mega-hacky, but works */ 827 /* kind of mega-hacky, but works */
831 ta->next = ta->prev = (struct coro *)ta; 828 ta->next = ta->prev = (struct coro *)ta;
832} 829}
833 830
834static int 831static int
835slf_check_nop (aTHX) 832slf_check_nop (pTHX_ struct CoroSLF *frame)
836{ 833{
837 return 0; 834 return 0;
838} 835}
839 836
840static void 837static UNOP coro_setup_op;
838
839static void NOINLINE /* noinline to keep it out of the transfer fast path */
841coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
842{ 841{
843 /* 842 /*
844 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
845 */ 844 */
… …
872 { 871 {
873 dSP; 872 dSP;
874 UNOP myop; 873 UNOP myop;
875 874
876 Zero (&myop, 1, UNOP); 875 Zero (&myop, 1, UNOP);
877 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
878 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
879 879
880 PUSHMARK (SP); 880 PUSHMARK (SP);
881 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
882 PUTBACK; 882 PUTBACK;
883 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
885 SPAGAIN;
886 } 885 }
887 886
888 /* this newly created coroutine might be run on an existing cctx which most 887 /* this newly created coroutine might be run on an existing cctx which most
889 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
890 */ 889 */
891 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
892 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM;
896 coro_setup_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */
898
899 PL_op = (OP *)&coro_setup_op;
900
901 /* copy throw, in case it was set before coro_setup */
902 CORO_THROW = coro->except;
893} 903}
894 904
895static void 905static void
896coro_destruct (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
897{ 907{
… …
921 931
922 SvREFCNT_dec (PL_diehook); 932 SvREFCNT_dec (PL_diehook);
923 SvREFCNT_dec (PL_warnhook); 933 SvREFCNT_dec (PL_warnhook);
924 934
925 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
927 937
928 coro_destruct_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
929} 939}
930 940
931INLINE void 941INLINE void
… …
941static int 951static int
942runops_trace (pTHX) 952runops_trace (pTHX)
943{ 953{
944 COP *oldcop = 0; 954 COP *oldcop = 0;
945 int oldcxix = -2; 955 int oldcxix = -2;
946 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
948 958
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 960 {
951 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
1018 SAVETMPS; 1028 SAVETMPS;
1019 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1030 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1032 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1033 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1034 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1037 SPAGAIN;
1028 FREETMPS; 1038 FREETMPS;
… …
1060 1070
1061 TAINT_NOT; 1071 TAINT_NOT;
1062 return 0; 1072 return 0;
1063} 1073}
1064 1074
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame;
1077
1065static void 1078static void
1066prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1067{ 1080{
1068 ta->prev = (struct coro *)cctx; 1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1069 ta->next = 0; 1082 ta->next = 0;
1070} 1083}
1071 1084
1072/* inject a fake call to Coro::State::_cctx_init into the execution */ 1085static int
1073/* _cctx_init should be careful, as it could be called at almost any time */ 1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1074/* during execution of a perl program */ 1087{
1075/* also initialises PL_top_env */ 1088 *frame = cctx_ssl_frame;
1089
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091}
1092
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1076static void NOINLINE 1094static void NOINLINE
1077cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
1078{ 1096{
1079 dSP;
1080 UNOP myop;
1081
1082 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
1083 1098
1084 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
1086 1101
1087 Zero (&myop, 1, UNOP); 1102 /* we already must be executing an SLF op, there is no other valid way
1088 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
1089 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1090 1106
1091 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1092 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
1093 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1109 cctx_ssl_frame = slf_frame;
1094 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
1095 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
1097 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1098 SPAGAIN;
1099} 1113}
1100 1114
1101/* the tail of transfer: execute stuff we can only do after a transfer */ 1115/* the tail of transfer: execute stuff we can only do after a transfer */
1102INLINE void 1116INLINE void
1103transfer_tail (pTHX) 1117transfer_tail (pTHX)
1104{ 1118{
1105 struct coro *next = (struct coro *)transfer_next;
1106 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109 free_coro_mortal (aTHX); 1119 free_coro_mortal (aTHX);
1110 UNLOCK;
1111
1112 if (expect_false (next->throw))
1113 {
1114 SV *exception = sv_2mortal (next->throw);
1115
1116 next->throw = 0;
1117 sv_setsv (ERRSV, exception);
1118 croak (0);
1119 }
1120} 1120}
1121 1121
1122/* 1122/*
1123 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1124 */
… …
1139 1139
1140 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
1142 1142
1143 /* cctx_run is the alternative tail of transfer() */ 1143 /* cctx_run is the alternative tail of transfer() */
1144 /* TODO: throwing an exception here might be deadly, VERIFY */
1145 transfer_tail (aTHX); 1144 transfer_tail (aTHX);
1146 1145
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1146 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1148 perl_run (PL_curinterp);
1149 /*
1150 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these
1152 */
1150 1153
1151 /* 1154 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1155 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1156 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1157 * reason for perl_run to return. We try to exit by jumping to the
… …
1305/** coroutine switching *****************************************************/ 1308/** coroutine switching *****************************************************/
1306 1309
1307static void 1310static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1311transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1312{
1313 /* TODO: throwing up here is considered harmful */
1314
1310 if (expect_true (prev != next)) 1315 if (expect_true (prev != next))
1311 { 1316 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1319
1315 if (expect_false (next->flags & CF_RUNNING)) 1320 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1322
1318 if (expect_false (next->flags & CF_DESTROYED)) 1323 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1325
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1326#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1327 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1329#endif
1325 } 1330 }
1326} 1331}
1327 1332
1328/* always use the TRANSFER macro */ 1333/* always use the TRANSFER macro */
1329static void NOINLINE 1334static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1336{
1332 dSTACKLEVEL; 1337 dSTACKLEVEL;
1333 1338
1334 /* sometimes transfer is only called to set idle_sp */ 1339 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1340 if (expect_false (!next))
1336 { 1341 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1342 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1343 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1344 }
1340 else if (expect_true (prev != next)) 1345 else if (expect_true (prev != next))
1341 { 1346 {
1342 coro_cctx *prev__cctx; 1347 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1354 prev->flags |= CF_RUNNING;
1350 } 1355 }
1351 1356
1352 prev->flags &= ~CF_RUNNING; 1357 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1358 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1359
1357 /* first get rid of the old state */ 1360 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1361 save_perl (aTHX_ prev);
1359 1362
1360 if (expect_false (next->flags & CF_NEW)) 1363 if (expect_false (next->flags & CF_NEW))
… …
1369 1372
1370 prev__cctx = prev->cctx; 1373 prev__cctx = prev->cctx;
1371 1374
1372 /* possibly untie and reuse the cctx */ 1375 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1376 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1377 prev__cctx->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1378 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1379 && !force_cctx
1377 )) 1380 ))
1378 { 1381 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1396 ++next->usecount;
1394 1397
1395 if (expect_true (!next->cctx)) 1398 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1399 next->cctx = cctx_get (aTHX);
1397 1400
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
1401 if (expect_false (prev__cctx != next->cctx)) 1401 if (expect_false (prev__cctx != next->cctx))
1402 { 1402 {
1403 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1419{
1420 if (coro->flags & CF_DESTROYED) 1420 if (coro->flags & CF_DESTROYED)
1421 return 0; 1421 return 0;
1422 1422
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro);
1425
1423 coro->flags |= CF_DESTROYED; 1426 coro->flags |= CF_DESTROYED;
1424 1427
1425 if (coro->flags & CF_READY) 1428 if (coro->flags & CF_READY)
1426 { 1429 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1430 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1431 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1432 --coro_nready;
1431 UNLOCK;
1432 } 1433 }
1433 else 1434 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1436
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1437 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1438 {
1438 struct coro temp; 1439 struct coro temp;
1439 1440
1440 if (coro->flags & CF_RUNNING) 1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1442
1443 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1445 1445
1446 coro_destruct (aTHX_ coro); 1446 coro_destruct (aTHX_ coro);
… …
1449 1449
1450 coro->slot = 0; 1450 coro->slot = 0;
1451 } 1451 }
1452 1452
1453 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1455 SvREFCNT_dec (coro->args);
1456 SvREFCNT_dec (CORO_THROW);
1455 1457
1456 if (coro->next) coro->next->prev = coro->prev; 1458 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1459 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1460 if (coro == coro_first) coro_first = coro->next;
1459 1461
… …
1513 1515
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1517 TRANSFER (ta, 1);
1516} 1518}
1517 1519
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1541}
1542
1518/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1519 1544
1520static void 1545INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1522{ 1547{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1549}
1525 1550
1526static SV * 1551INLINE SV *
1527coro_deq (pTHX) 1552coro_deq (pTHX)
1528{ 1553{
1529 int prio; 1554 int prio;
1530 1555
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1550 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1551 return 0; 1576 return 0;
1552 1577
1553 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1554 1579
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1582
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1583 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1584 ++coro_nready;
1562 1585
1563 UNLOCK;
1564
1565 if (sv_hook) 1586 if (sv_hook)
1566 { 1587 {
1567 dSP; 1588 dSP;
1568 1589
1569 ENTER; 1590 ENTER;
1570 SAVETMPS; 1591 SAVETMPS;
1571 1592
1572 PUSHMARK (SP); 1593 PUSHMARK (SP);
1573 PUTBACK; 1594 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD); 1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1596
1577 FREETMPS; 1597 FREETMPS;
1578 LEAVE; 1598 LEAVE;
1579 } 1599 }
1580 1600
… …
1595{ 1615{
1596 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1597 1617
1598 for (;;) 1618 for (;;)
1599 { 1619 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX); 1620 next_sv = coro_deq (aTHX);
1602 1621
1603 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1605 { 1624 {
1606 dSP; 1625 dSP;
1607 UNLOCK;
1608 1626
1609 ENTER; 1627 ENTER;
1610 SAVETMPS; 1628 SAVETMPS;
1611 1629
1612 PUSHMARK (SP); 1630 PUSHMARK (SP);
1613 PUTBACK; 1631 PUTBACK;
1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1615 SPAGAIN;
1616 1633
1617 FREETMPS; 1634 FREETMPS;
1618 LEAVE; 1635 LEAVE;
1619 continue; 1636 continue;
1620 } 1637 }
1621 1638
1622 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1623 1640
1624 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 { 1643 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1630 continue; 1646 continue;
1631 } 1647 }
1632 1648
1633 --coro_nready; 1649 --coro_nready;
1634 UNLOCK;
1635 break; 1650 break;
1636 } 1651 }
1637 1652
1638 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1641 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1645 1660
1646 LOCK;
1647 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1649 UNLOCK;
1650} 1663}
1651 1664
1652INLINE void 1665INLINE void
1653prepare_cede (pTHX_ struct coro_transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1667{
… …
1718 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1719 { 1732 {
1720 if (!coro->cctx) 1733 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1734 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1724 1737
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1739 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1741 {
… …
1733 else 1746 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1748 }
1736} 1749}
1737 1750
1738#if 0 1751/*****************************************************************************/
1752/* rouse callback */
1753
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755
1756static void
1757coro_rouse_callback (pTHX_ CV *cv)
1758{
1759 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG;
1761
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 {
1764 /* first call, set args */
1765 int i;
1766 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768
1769 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772
1773 /* better take a full copy of the arguments */
1774 while (items--)
1775 av_store (av, items, newSVsv (ST (items)));
1776 }
1777
1778 XSRETURN_EMPTY;
1779}
1780
1739static int 1781static int
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1741{ 1783{
1742 AV *padlist; 1784 SV *data = (SV *)frame->data;
1743 AV *av = (AV *)mg->mg_obj; 1785
1786 if (CORO_THROW)
1787 return 0;
1744 1788
1745 abort (); 1789 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1790 return 1;
1791
1792 /* now push all results on the stack */
1793 {
1794 dSP;
1795 AV *av = (AV *)SvRV (data);
1796 int i;
1797
1798 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801
1802 /* we have stolen the elements, so ste length to zero and free */
1803 AvFILLp (av) = -1;
1804 av_undef (av);
1805
1806 PUTBACK;
1807 }
1746 1808
1747 return 0; 1809 return 0;
1748} 1810}
1749 1811
1750static MGVTBL coro_gensub_vtbl = { 1812static void
1751 0, 0, 0, 0, 1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1814{
1753}; 1815 SV *cb;
1754#endif 1816
1817 if (items)
1818 cb = arg [0];
1819 else
1820 {
1821 struct coro *coro = SvSTATE_current;
1822
1823 if (!coro->rouse_cb)
1824 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1825
1826 cb = sv_2mortal (coro->rouse_cb);
1827 coro->rouse_cb = 0;
1828 }
1829
1830 if (!SvROK (cb)
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,");
1834
1835 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait;
1842 }
1843}
1844
1845static SV *
1846coro_new_rouse_cb (pTHX)
1847{
1848 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1852
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */
1855
1856 SvREFCNT_dec (coro->rouse_cb);
1857 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1858
1859 return cb;
1860}
1861
1862/*****************************************************************************/
1863/* schedule-like-function opcode (SLF) */
1864
1865static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1866static const CV *slf_cv;
1867static SV **slf_argv;
1868static int slf_argc, slf_arga; /* count, allocated */
1869static I32 slf_ax; /* top of stack, for restore */
1870
1871/* this restores the stack in the case we patched the entersub, to */
1872/* recreate the stack frame as perl will on following calls */
1873/* since entersub cleared the stack */
1874static OP *
1875pp_restore (pTHX)
1876{
1877 int i;
1878 SV **SP = PL_stack_base + slf_ax;
1879
1880 PUSHMARK (SP);
1881
1882 EXTEND (SP, slf_argc + 1);
1883
1884 for (i = 0; i < slf_argc; ++i)
1885 PUSHs (sv_2mortal (slf_argv [i]));
1886
1887 PUSHs ((SV *)CvGV (slf_cv));
1888
1889 RETURNOP (slf_restore.op_first);
1890}
1891
1892static void
1893slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1894{
1895 SV **arg = (SV **)slf_frame.data;
1896
1897 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1898}
1899
1900static void
1901slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1902{
1903 if (items != 2)
1904 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1905
1906 frame->prepare = slf_prepare_transfer;
1907 frame->check = slf_check_nop;
1908 frame->data = (void *)arg; /* let's hope it will stay valid */
1909}
1910
1911static void
1912slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1913{
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop;
1916}
1917
1918static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop;
1923}
1924
1925static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{
1928 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop;
1930}
1931
1932/*
1933 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same
1935 * stack offset
1936 * SLF stands for "schedule-like-function".
1937 */
1938static OP *
1939pp_slf (pTHX)
1940{
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942
1943 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare))
1947 {
1948 /* first iteration */
1949 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */
1952 SV *gv = *sp;
1953
1954 /* do a quick consistency check on the "function" object, and if it isn't */
1955 /* for us, divert to the real entersub */
1956 if (SvTYPE (gv) != SVt_PVGV
1957 || !GvCV (gv)
1958 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1959 return PL_ppaddr[OP_ENTERSUB](aTHX);
1960
1961 if (!(PL_op->op_flags & OPf_STACKED))
1962 {
1963 /* ampersand-form of call, use @_ instead of stack */
1964 AV *av = GvAV (PL_defgv);
1965 arg = AvARRAY (av);
1966 items = AvFILLp (av) + 1;
1967 }
1968
1969 /* now call the init function, which needs to set up slf_frame */
1970 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1971 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1972
1973 /* pop args */
1974 SP = PL_stack_base + POPMARK;
1975
1976 PUTBACK;
1977 }
1978
1979 /* now that we have a slf_frame, interpret it! */
1980 /* we use a callback system not to make the code needlessly */
1981 /* complicated, but so we can run multiple perl coros from one cctx */
1982
1983 do
1984 {
1985 struct coro_transfer_args ta;
1986
1987 slf_frame.prepare (aTHX_ &ta);
1988 TRANSFER (ta, 0);
1989
1990 checkmark = PL_stack_sp - PL_stack_base;
1991 }
1992 while (slf_frame.check (aTHX_ &slf_frame));
1993
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995
1996 /* exception handling */
1997 if (expect_false (CORO_THROW))
1998 {
1999 SV *exception = sv_2mortal (CORO_THROW);
2000
2001 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception);
2003 croak (0);
2004 }
2005
2006 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR)
2009 {
2010 dSP;
2011 SV **bot = PL_stack_base + checkmark;
2012
2013 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */
2016 bot [1] = *sp;
2017
2018 SP = bot + 1;
2019
2020 PUTBACK;
2021 }
2022
2023 return NORMAL;
2024}
2025
2026static void
2027api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2028{
2029 int i;
2030 SV **arg = PL_stack_base + ax;
2031 int items = PL_stack_sp - arg + 1;
2032
2033 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2034
2035 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2036 && PL_op->op_ppaddr != pp_slf)
2037 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2038
2039 CvFLAGS (cv) |= CVf_SLF;
2040 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2041 slf_cv = cv;
2042
2043 /* we patch the op, and then re-run the whole call */
2044 /* we have to put the same argument on the stack for this to work */
2045 /* and this will be done by pp_restore */
2046 slf_restore.op_next = (OP *)&slf_restore;
2047 slf_restore.op_type = OP_CUSTOM;
2048 slf_restore.op_ppaddr = pp_restore;
2049 slf_restore.op_first = PL_op;
2050
2051 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2052
2053 if (PL_op->op_flags & OPf_STACKED)
2054 {
2055 if (items > slf_arga)
2056 {
2057 slf_arga = items;
2058 free (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *));
2060 }
2061
2062 slf_argc = items;
2063
2064 for (i = 0; i < items; ++i)
2065 slf_argv [i] = SvREFCNT_inc (arg [i]);
2066 }
2067 else
2068 slf_argc = 0;
2069
2070 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2072
2073 PL_op = (OP *)&slf_restore;
2074}
1755 2075
1756/*****************************************************************************/ 2076/*****************************************************************************/
1757/* PerlIO::cede */ 2077/* PerlIO::cede */
1758 2078
1759typedef struct 2079typedef struct
… …
1827 PerlIOBuf_get_cnt, 2147 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 2148 PerlIOBuf_set_ptrcnt,
1829}; 2149};
1830 2150
1831/*****************************************************************************/ 2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
1832 2153
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP * 2154static SV *
1843pp_restore (pTHX) 2155coro_waitarray_new (pTHX_ int count)
1844{ 2156{
1845 dSP; 2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV ();
2159 SV **ary;
1846 2160
1847 PUSHMARK (SP); 2161 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary;
2164 /*AvARRAY (av) = ary;*/
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2166 AvMAX (av) = 1;
2167 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count);
1848 2169
1849 EXTEND (SP, 3); 2170 return newRV_noinc ((SV *)av);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855} 2171}
1856 2172
1857static void 2173/* semaphore */
1858slf_init_set_stacklevel (pTHX_ SV **arg, int items)
1859{
1860 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861 CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862}
1863 2174
1864static void 2175static void
1865slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2176coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1866{ 2177{
1867 prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); 2178 SV *count_sv = AvARRAY (av)[0];
1868} 2179 IV count = SvIVX (count_sv);
1869 2180
1870static void 2181 count += adjust;
1871slf_init_transfer (pTHX_ SV **arg, int items) 2182 SvIVX (count_sv) = count;
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875 2183
1876 CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ 2184 /* now wake up as many waiters as are expected to lock */
1877} 2185 while (count > 0 && AvFILLp (av) > 0)
1878
1879static void
1880slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881{
1882 SV **arg = (SV **)CORO_SLF_DATA;
1883
1884 prepare_transfer (ta, arg [0], arg [1]);
1885}
1886
1887static void
1888slf_init_nop (pTHX_ SV **arg, int items)
1889{
1890}
1891
1892/* slf_prepare_schedule == prepare_schedule */
1893/* slf_prepare_cede == prepare_cede */
1894/* slf_prepare_notself == prepare_notself */
1895
1896/* we hijack an hopefully unused CV flag for our purposes */
1897#define CVf_SLF 0x4000
1898
1899/*
1900 * these not obviously related functions are all rolled into one
1901 * function to increase chances that they all will call transfer with the same
1902 * stack offset
1903 * SLF stands for "schedule-like-function".
1904 */
1905static OP *
1906pp_slf (pTHX)
1907{
1908 I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910 if (expect_true (!slf_frame.prepare))
1911 { 2186 {
1912 /* first iteration */ 2187 SV *cb;
1913 dSP;
1914 SV **arg = PL_stack_base + TOPMARK + 1;
1915 int items = SP - arg; /* args without function object */
1916 SV *gv = *sp;
1917 struct CoroSLF *slf;
1918 2188
1919 /* do a quick consistency check on the "function" object, and if it isn't */ 2189 /* swap first two elements so we can shift a waiter */
1920 /* for us, divert to the real entersub */ 2190 AvARRAY (av)[0] = AvARRAY (av)[1];
1921 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2191 AvARRAY (av)[1] = count_sv;
1922 return PL_ppaddr[OP_ENTERSUB](aTHX); 2192 cb = av_shift (av);
1923 2193
1924 /* pop args */ 2194 if (SvOBJECT (cb))
1925 SP = PL_stack_base + POPMARK;
1926
1927 if (!(PL_op->op_flags & OPf_STACKED))
1928 { 2195 {
1929 /* ampersand-form of call, use @_ instead of stack */ 2196 api_ready (aTHX_ cb);
1930 AV *av = GvAV (PL_defgv); 2197 --count;
1931 arg = AvARRAY (av);
1932 items = AvFILLp (av) + 1;
1933 } 2198 }
1934 2199 else if (SvTYPE (cb) == SVt_PVCV)
2200 {
2201 dSP;
2202 PUSHMARK (SP);
2203 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1935 PUTBACK; 2204 PUTBACK;
2205 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2206 }
1936 2207
1937 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; 2208 SvREFCNT_dec (cb);
1938 slf_frame.prepare = slf->prepare;
1939 slf_frame.check = slf->check;
1940 slf->init (aTHX_ arg, items);
1941 }
1942
1943 /* now interpret the slf_frame */
1944 /* we use a callback system not to make the code needlessly */
1945 /* complicated, but so we can run multiple perl coros from one cctx */
1946
1947 do
1948 { 2209 }
1949 struct coro_transfer_args ta; 2210}
1950 2211
1951 slf_frame.prepare (aTHX_ &ta); 2212static void
1952 TRANSFER (ta, 0); 2213coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2214{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2217}
1953 2218
1954 checkmark = PL_stack_sp - PL_stack_base; 2219static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{
2222 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0];
2224
2225 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW)
2227 return 0;
2228 else if (SvIVX (count_sv) > 0)
1955 } 2229 {
1956 while (slf_frame.check (aTHX)); 2230 SvSTATE_current->on_destroy = 0;
1957 2231
2232 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else
2235 coro_semaphore_adjust (aTHX_ av, 0);
2236
2237 return 0;
2238 }
2239 else
2240 {
2241 int i;
2242 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */
2245
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current))
2248 return 1;
2249
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2251 return 1;
2252 }
2253}
2254
2255static int
2256slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2257{
2258 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2259}
2260
2261static int
2262slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2263{
2264 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2265}
2266
2267static void
2268slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 AV *av = (AV *)SvRV (arg [0]);
2271
2272 if (SvIVX (AvARRAY (av)[0]) > 0)
2273 {
2274 frame->data = (void *)av;
2275 frame->prepare = prepare_nop;
2276 }
2277 else
2278 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2287 }
2288}
2289
2290static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2294 frame->check = slf_check_semaphore_down;
2295}
2296
2297static void
2298slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2299{
2300 if (items >= 2)
2301 {
2302 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (arg [1]);
2305
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2307
2308 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0);
2310
2311 frame->prepare = prepare_nop;
2312 frame->check = slf_check_nop;
2313 }
2314 else
2315 {
2316 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2317 frame->check = slf_check_semaphore_wait;
2318 }
2319}
2320
2321/* signal */
2322
2323static void
2324coro_signal_wake (pTHX_ AV *av, int count)
2325{
2326 SvIVX (AvARRAY (av)[0]) = 0;
2327
2328 /* now signal count waiters */
2329 while (count > 0 && AvFILLp (av) > 0)
2330 {
2331 SV *cb;
2332
2333 /* swap first two elements so we can shift a waiter */
2334 cb = AvARRAY (av)[0];
2335 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb;
2337
2338 cb = av_shift (av);
2339
2340 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */
2342 SvREFCNT_dec (cb);
2343
2344 --count;
2345 }
2346}
2347
2348static int
2349slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2350{
2351 /* if we are about to throw, also stop waiting */
2352 return SvROK ((SV *)frame->data) && !CORO_THROW;
2353}
2354
2355static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{
2358 AV *av = (AV *)SvRV (arg [0]);
2359
2360 if (SvIVX (AvARRAY (av)[0]))
2361 {
2362 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop;
2365 }
2366 else
2367 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2369
2370 av_push (av, waiter);
2371
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule;
2374 frame->check = slf_check_signal_wait;
2375 }
2376}
2377
2378/*****************************************************************************/
2379/* Coro::AIO */
2380
2381#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2382
2383/* helper storage struct */
2384struct io_state
2385{
2386 int errorno;
2387 I32 laststype; /* U16 in 5.10.0 */
2388 int laststatval;
2389 Stat_t statcache;
2390};
2391
2392static void
2393coro_aio_callback (pTHX_ CV *cv)
2394{
2395 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG;
2397 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state));
2399
2400 av_extend (state, items);
2401
2402 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv);
2405
2406 {
2407 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2408
2409 data->errorno = errno;
2410 data->laststype = PL_laststype;
2411 data->laststatval = PL_laststatval;
2412 data->statcache = PL_statcache;
2413 }
2414
2415 /* now build the result vector out of all the parameters and the data_sv */
2416 {
2417 int i;
2418
2419 for (i = 0; i < items; ++i)
2420 av_push (state, SvREFCNT_inc_NN (ST (i)));
2421 }
2422
2423 av_push (state, data_sv);
2424
2425 api_ready (aTHX_ coro);
2426 SvREFCNT_dec (coro);
2427 SvREFCNT_dec ((AV *)state);
2428}
2429
2430static int
2431slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2432{
2433 AV *state = (AV *)frame->data;
2434
2435 /* if we are about to throw, return early */
2436 /* this does not cancel the aio request, but at least */
2437 /* it quickly returns */
2438 if (CORO_THROW)
2439 return 0;
2440
2441 /* one element that is an RV? repeat! */
2442 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2443 return 1;
2444
2445 /* restore status */
2446 {
2447 SV *data_sv = av_pop (state);
2448 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2449
2450 errno = data->errorno;
2451 PL_laststype = data->laststype;
2452 PL_laststatval = data->laststatval;
2453 PL_statcache = data->statcache;
2454
2455 SvREFCNT_dec (data_sv);
2456 }
2457
2458 /* push result values */
1958 { 2459 {
1959 dSP; 2460 dSP;
1960 SV **bot = PL_stack_base + checkmark; 2461 int i;
1961 int gimme = GIMME_V;
1962 2462
1963 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ 2463 EXTEND (SP, AvFILLp (state) + 1);
1964 2464 for (i = 0; i <= AvFILLp (state); ++i)
1965 /* make sure we put something on the stack in scalar context */ 2465 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966 if (gimme == G_SCALAR)
1967 {
1968 if (sp == bot)
1969 XPUSHs (&PL_sv_undef);
1970
1971 SP = bot + 1;
1972 }
1973 2466
1974 PUTBACK; 2467 PUTBACK;
1975 } 2468 }
1976 2469
1977 return NORMAL; 2470 return 0;
1978} 2471}
1979 2472
1980static void 2473static void
1981api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) 2474slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982{ 2475{
1983 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2476 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2477 SV *coro_hv = SvRV (coro_current);
2478 struct coro *coro = SvSTATE_hv (coro_hv);
1985 2479
1986 if (items > 2) 2480 /* put our coroutine id on the state arg */
1987 croak ("Coro only supports a max of two arguments to SLF functions."); 2481 av_push (state, SvREFCNT_inc_NN (coro_hv));
1988 2482
1989 CvFLAGS (cv) |= CVf_SLF; 2483 /* first see whether we have a non-zero priority and set it as AIO prio */
1990 CvXSUBANY (cv).any_ptr = (void *)slf; 2484 if (coro->prio)
1991 slf_cv = cv; 2485 {
2486 dSP;
1992 2487
1993 /* we patch the op, and then re-run the whole call */ 2488 static SV *prio_cv;
1994 /* we have to put the same argument on the stack for this to work */ 2489 static SV *prio_sv;
1995 /* and this will be done by pp_restore */
1996 slf_restore.op_next = (OP *)&slf_restore;
1997 slf_restore.op_type = OP_NULL;
1998 slf_restore.op_ppaddr = pp_restore;
1999 slf_restore.op_first = PL_op;
2000 2490
2001 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; 2491 if (expect_false (!prio_cv))
2002 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; 2492 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0);
2495 }
2003 2496
2004 PL_op->op_ppaddr = pp_slf; 2497 PUSHMARK (SP);
2498 sv_setiv (prio_sv, coro->prio);
2499 XPUSHs (prio_sv);
2005 2500
2006 PL_op = (OP *)&slf_restore; 2501 PUTBACK;
2502 call_sv (prio_cv, G_VOID | G_DISCARD);
2503 }
2504
2505 /* now call the original request */
2506 {
2507 dSP;
2508 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2509 int i;
2510
2511 PUSHMARK (SP);
2512
2513 /* first push all args to the stack */
2514 EXTEND (SP, items + 1);
2515
2516 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]);
2518
2519 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521
2522 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 }
2526
2527 /* now that the requets is going, we loop toll we have a result */
2528 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req;
2007} 2531}
2532
2533static void
2534coro_aio_req_xs (pTHX_ CV *cv)
2535{
2536 dXSARGS;
2537
2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2539
2540 XSRETURN_EMPTY;
2541}
2542
2543/*****************************************************************************/
2008 2544
2009MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010 2546
2011PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
2012 2548
2013BOOT: 2549BOOT:
2014{ 2550{
2015#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
2016 MUTEX_INIT (&coro_lock);
2017# if CORO_PTHREAD 2552# if CORO_PTHREAD
2018 coro_thx = PERL_GET_CONTEXT; 2553 coro_thx = PERL_GET_CONTEXT;
2019# endif 2554# endif
2020#endif 2555#endif
2021 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
… …
2042 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
2043 2578
2044 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
2045 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
2046 2581
2582 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf,
2587 newSVpv ("coro_slf", 0), 0);
2588
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf,
2591 newSVpv ("coro schedule like function", 0), 0);
2592 }
2593
2047 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
2048 coroapi.rev = CORO_API_REVISION; 2595 coroapi.rev = CORO_API_REVISION;
2596
2049 coroapi.transfer = api_transfer; 2597 coroapi.transfer = api_transfer;
2598
2599 coroapi.sv_state = SvSTATE_;
2050 coroapi.execute_slf = api_execute_slf; 2600 coroapi.execute_slf = api_execute_slf;
2051 coroapi.sv_state = SvSTATE_; 2601 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself;
2052 2605
2053 { 2606 {
2054 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055 2608
2056 if (!svp) croak ("Time::HiRes is required"); 2609 if (!svp) croak ("Time::HiRes is required");
… …
2062 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2063} 2616}
2064 2617
2065SV * 2618SV *
2066new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
2067 CODE: 2622 CODE:
2068{ 2623{
2069 struct coro *coro; 2624 struct coro *coro;
2070 MAGIC *mg; 2625 MAGIC *mg;
2071 HV *hv; 2626 HV *hv;
2627 CV *cb;
2072 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
2073 2643
2074 Newz (0, coro, 1, struct coro); 2644 Newz (0, coro, 1, struct coro);
2075 coro->args = newAV (); 2645 coro->args = newAV ();
2076 coro->flags = CF_NEW; 2646 coro->flags = CF_NEW;
2077 2647
… …
2082 coro->hv = hv = newHV (); 2652 coro->hv = hv = newHV ();
2083 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2084 mg->mg_flags |= MGf_DUP; 2654 mg->mg_flags |= MGf_DUP;
2085 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2086 2656
2657 if (items > 1)
2658 {
2087 av_extend (coro->args, items - 1); 2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
2088 for (i = 1; i < items; i++) 2669 for (i = 2; i < items; i++)
2089 av_push (coro->args, newSVsv (ST (i))); 2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2090} 2672}
2091 OUTPUT: 2673 OUTPUT:
2092 RETVAL 2674 RETVAL
2093 2675
2094void 2676void
2095_set_stacklevel (...) 2677transfer (...)
2678 PROTOTYPE: $$
2096 CODE: 2679 CODE:
2097{ 2680 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2098 static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100}
2101
2102void
2103transfer (...)
2104 CODE:
2105{
2106 static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108}
2109 2681
2110bool 2682bool
2111_destroy (SV *coro_sv) 2683_destroy (SV *coro_sv)
2112 CODE: 2684 CODE:
2113 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2120 CODE: 2692 CODE:
2121 _exit (code); 2693 _exit (code);
2122 2694
2123int 2695int
2124cctx_stacksize (int new_stacksize = 0) 2696cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$
2125 CODE: 2698 CODE:
2126 RETVAL = cctx_stacksize; 2699 RETVAL = cctx_stacksize;
2127 if (new_stacksize) 2700 if (new_stacksize)
2128 { 2701 {
2129 cctx_stacksize = new_stacksize; 2702 cctx_stacksize = new_stacksize;
… …
2132 OUTPUT: 2705 OUTPUT:
2133 RETVAL 2706 RETVAL
2134 2707
2135int 2708int
2136cctx_max_idle (int max_idle = 0) 2709cctx_max_idle (int max_idle = 0)
2710 PROTOTYPE: ;$
2137 CODE: 2711 CODE:
2138 RETVAL = cctx_max_idle; 2712 RETVAL = cctx_max_idle;
2139 if (max_idle > 1) 2713 if (max_idle > 1)
2140 cctx_max_idle = max_idle; 2714 cctx_max_idle = max_idle;
2141 OUTPUT: 2715 OUTPUT:
2142 RETVAL 2716 RETVAL
2143 2717
2144int 2718int
2145cctx_count () 2719cctx_count ()
2720 PROTOTYPE:
2146 CODE: 2721 CODE:
2147 RETVAL = cctx_count; 2722 RETVAL = cctx_count;
2148 OUTPUT: 2723 OUTPUT:
2149 RETVAL 2724 RETVAL
2150 2725
2151int 2726int
2152cctx_idle () 2727cctx_idle ()
2728 PROTOTYPE:
2153 CODE: 2729 CODE:
2154 RETVAL = cctx_idle; 2730 RETVAL = cctx_idle;
2155 OUTPUT: 2731 OUTPUT:
2156 RETVAL 2732 RETVAL
2157 2733
2158void 2734void
2159list () 2735list ()
2736 PROTOTYPE:
2160 PPCODE: 2737 PPCODE:
2161{ 2738{
2162 struct coro *coro; 2739 struct coro *coro;
2163 for (coro = coro_first; coro; coro = coro->next) 2740 for (coro = coro_first; coro; coro = coro->next)
2164 if (coro->hv) 2741 if (coro->hv)
… …
2226 2803
2227void 2804void
2228throw (Coro::State self, SV *throw = &PL_sv_undef) 2805throw (Coro::State self, SV *throw = &PL_sv_undef)
2229 PROTOTYPE: $;$ 2806 PROTOTYPE: $;$
2230 CODE: 2807 CODE:
2808{
2809 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except;
2231 SvREFCNT_dec (self->throw); 2811 SvREFCNT_dec (*throwp);
2232 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2813}
2233 2814
2234void 2815void
2235api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$
2236 C_ARGS: aTHX_ coro, flags 2818 C_ARGS: aTHX_ coro, flags
2237 2819
2238SV * 2820SV *
2239has_cctx (Coro::State coro) 2821has_cctx (Coro::State coro)
2240 PROTOTYPE: $ 2822 PROTOTYPE: $
… …
2265 OUTPUT: 2847 OUTPUT:
2266 RETVAL 2848 RETVAL
2267 2849
2268void 2850void
2269force_cctx () 2851force_cctx ()
2852 PROTOTYPE:
2270 CODE: 2853 CODE:
2271 struct coro *coro = SvSTATE (coro_current);
2272 coro->cctx->idle_sp = 0; 2854 SvSTATE_current->cctx->idle_sp = 0;
2273 2855
2274void 2856void
2275swap_defsv (Coro::State self) 2857swap_defsv (Coro::State self)
2276 PROTOTYPE: $ 2858 PROTOTYPE: $
2277 ALIAS: 2859 ALIAS:
2278 swap_defav = 1 2860 swap_defav = 1
2279 CODE: 2861 CODE:
2280 if (!self->slot) 2862 if (!self->slot)
2281 croak ("cannot swap state with coroutine that has no saved state"); 2863 croak ("cannot swap state with coroutine that has no saved state,");
2282 else 2864 else
2283 { 2865 {
2284 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2866 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286 2868
2287 SV *tmp = *src; *src = *dst; *dst = tmp; 2869 SV *tmp = *src; *src = *dst; *dst = tmp;
2288 } 2870 }
2289 2871
2872
2290MODULE = Coro::State PACKAGE = Coro 2873MODULE = Coro::State PACKAGE = Coro
2291 2874
2292BOOT: 2875BOOT:
2293{ 2876{
2294 int i; 2877 int i;
2295 2878
2296 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2297 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2298 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2299 2882 cv_coro_run = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
2300 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2301 SvREADONLY_on (coro_current); 2884 SvREADONLY_on (coro_current);
2302 2885
2303 coro_stash = gv_stashpv ("Coro", TRUE); 2886 coro_stash = gv_stashpv ("Coro", TRUE);
2304 2887
2305 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
2321 coroapi.ready = api_ready; 2904 coroapi.ready = api_ready;
2322 coroapi.is_ready = api_is_ready; 2905 coroapi.is_ready = api_is_ready;
2323 coroapi.nready = coro_nready; 2906 coroapi.nready = coro_nready;
2324 coroapi.current = coro_current; 2907 coroapi.current = coro_current;
2325 2908
2326 GCoroAPI = &coroapi; 2909 /*GCoroAPI = &coroapi;*/
2327 sv_setiv (sv, (IV)&coroapi); 2910 sv_setiv (sv, (IV)&coroapi);
2328 SvREADONLY_on (sv); 2911 SvREADONLY_on (sv);
2329 } 2912 }
2330} 2913}
2331 2914
2332void 2915void
2333schedule (...) 2916schedule (...)
2334 CODE: 2917 CODE:
2335{ 2918 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336 static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop };
2337 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2338}
2339 2919
2340void 2920void
2341cede (...) 2921cede (...)
2342 CODE: 2922 CODE:
2343{ 2923 CORO_EXECUTE_SLF_XS (slf_init_cede);
2344 static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346}
2347 2924
2348void 2925void
2349cede_notself (...) 2926cede_notself (...)
2350 CODE: 2927 CODE:
2351{ 2928 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352 static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353 api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354}
2355 2929
2356void 2930void
2357_set_current (SV *current) 2931_set_current (SV *current)
2358 PROTOTYPE: $ 2932 PROTOTYPE: $
2359 CODE: 2933 CODE:
… …
2362 2936
2363void 2937void
2364_set_readyhook (SV *hook) 2938_set_readyhook (SV *hook)
2365 PROTOTYPE: $ 2939 PROTOTYPE: $
2366 CODE: 2940 CODE:
2367 LOCK;
2368 SvREFCNT_dec (coro_readyhook); 2941 SvREFCNT_dec (coro_readyhook);
2369 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370 UNLOCK;
2371 2943
2372int 2944int
2373prio (Coro::State coro, int newprio = 0) 2945prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$
2374 ALIAS: 2947 ALIAS:
2375 nice = 1 2948 nice = 1
2376 CODE: 2949 CODE:
2377{ 2950{
2378 RETVAL = coro->prio; 2951 RETVAL = coro->prio;
… …
2410# for async_pool speedup 2983# for async_pool speedup
2411void 2984void
2412_pool_1 (SV *cb) 2985_pool_1 (SV *cb)
2413 CODE: 2986 CODE:
2414{ 2987{
2415 struct coro *coro = SvSTATE (coro_current);
2416 HV *hv = (HV *)SvRV (coro_current); 2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2417 AV *defav = GvAV (PL_defgv); 2990 AV *defav = GvAV (PL_defgv);
2418 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419 AV *invoke_av; 2992 AV *invoke_av;
2420 int i, len; 2993 int i, len;
2421 2994
… …
2442 { 3015 {
2443 av_fill (defav, len - 1); 3016 av_fill (defav, len - 1);
2444 for (i = 0; i < len; ++i) 3017 for (i = 0; i < len; ++i)
2445 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446 } 3019 }
2447
2448 SvREFCNT_dec (invoke);
2449} 3020}
2450 3021
2451void 3022void
2452_pool_2 (SV *cb) 3023_pool_2 (SV *cb)
2453 CODE: 3024 CODE:
2454{ 3025{
2455 struct coro *coro = SvSTATE (coro_current); 3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
2456 3028
2457 sv_setsv (cb, &PL_sv_undef); 3029 sv_setsv (cb, &PL_sv_undef);
2458 3030
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0; 3032 coro->saved_deffh = 0;
… …
2467 SvREFCNT_dec (old); 3039 SvREFCNT_dec (old);
2468 croak ("\3async_pool terminate\2\n"); 3040 croak ("\3async_pool terminate\2\n");
2469 } 3041 }
2470 3042
2471 av_clear (GvAV (PL_defgv)); 3043 av_clear (GvAV (PL_defgv));
2472 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3044 hv_store (hv, "desc", sizeof ("desc") - 1,
2473 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474 3046
2475 coro->prio = 0; 3047 coro->prio = 0;
2476 3048
2477 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478 api_trace (aTHX_ coro_current, 0); 3050 api_trace (aTHX_ coro_current, 0);
2479 3051
2480 av_push (av_async_pool, newSVsv (coro_current)); 3052 av_push (av_async_pool, newSVsv (coro_current));
2481} 3053}
2482 3054
2483#if 0
2484
2485void
2486_generator_call (...)
2487 PROTOTYPE: @
2488 PPCODE:
2489 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490 xxxx
2491 abort ();
2492
2493SV * 3055SV *
2494gensub (SV *sub, ...) 3056rouse_cb ()
2495 PROTOTYPE: &;@ 3057 PROTOTYPE:
2496 CODE: 3058 CODE:
2497{ 3059 RETVAL = coro_new_rouse_cb (aTHX);
2498 struct coro *coro;
2499 MAGIC *mg;
2500 CV *xcv;
2501 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502 int i;
2503
2504 CvGV (ncv) = CvGV (cv);
2505 CvFILE (ncv) = CvFILE (cv);
2506
2507 Newz (0, coro, 1, struct coro);
2508 coro->args = newAV ();
2509 coro->flags = CF_NEW;
2510
2511 av_extend (coro->args, items - 1);
2512 for (i = 1; i < items; i++)
2513 av_push (coro->args, newSVsv (ST (i)));
2514
2515 CvISXSUB_on (ncv);
2516 CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520 CvXSUB (ncv) = CvXSUB (xcv);
2521 CvANON_on (ncv);
2522
2523 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524 RETVAL = newRV_noinc ((SV *)ncv);
2525}
2526 OUTPUT: 3060 OUTPUT:
2527 RETVAL 3061 RETVAL
2528 3062
2529#endif
2530
2531
2532MODULE = Coro::State PACKAGE = Coro::AIO
2533
2534void 3063void
2535_get_state (SV *self) 3064rouse_wait (...)
3065 PROTOTYPE: ;$
2536 PPCODE: 3066 PPCODE:
2537{ 3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2538 AV *defav = GvAV (PL_defgv);
2539 AV *av = newAV ();
2540 int i;
2541 SV *data_sv = newSV (sizeof (struct io_state));
2542 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543 SvCUR_set (data_sv, sizeof (struct io_state));
2544 SvPOK_only (data_sv);
2545 3068
2546 data->errorno = errno;
2547 data->laststype = PL_laststype;
2548 data->laststatval = PL_laststatval;
2549 data->statcache = PL_statcache;
2550 3069
2551 av_extend (av, AvFILLp (defav) + 1 + 1); 3070MODULE = Coro::State PACKAGE = PerlIO::cede
2552 3071
2553 for (i = 0; i <= AvFILLp (defav); ++i) 3072BOOT:
2554 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2555 3074
2556 av_push (av, data_sv);
2557 3075
2558 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3076MODULE = Coro::State PACKAGE = Coro::Semaphore
2559 3077
2560 api_ready (aTHX_ self); 3078SV *
2561} 3079new (SV *klass, SV *count = 0)
3080 CODE:
3081 RETVAL = sv_bless (
3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3083 GvSTASH (CvGV (cv))
3084 );
3085 OUTPUT:
3086 RETVAL
3087
3088# helper for Coro::Channel
3089SV *
3090_alloc (int count)
3091 CODE:
3092 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT:
3094 RETVAL
3095
3096SV *
3097count (SV *self)
3098 CODE:
3099 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3100 OUTPUT:
3101 RETVAL
2562 3102
2563void 3103void
2564_set_state (SV *state) 3104up (SV *self, int adjust = 1)
2565 PROTOTYPE: $ 3105 ALIAS:
3106 adjust = 1
3107 CODE:
3108 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3109
3110void
3111down (...)
3112 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3114
3115void
3116wait (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3119
3120void
3121try (SV *self)
3122 PPCODE:
3123{
3124 AV *av = (AV *)SvRV (self);
3125 SV *count_sv = AvARRAY (av)[0];
3126 IV count = SvIVX (count_sv);
3127
3128 if (count > 0)
3129 {
3130 --count;
3131 SvIVX (count_sv) = count;
3132 XSRETURN_YES;
3133 }
3134 else
3135 XSRETURN_NO;
3136}
3137
3138void
3139waiters (SV *self)
3140 PPCODE:
3141{
3142 AV *av = (AV *)SvRV (self);
3143 int wcount = AvFILLp (av) + 1 - 1;
3144
3145 if (GIMME_V == G_SCALAR)
3146 XPUSHs (sv_2mortal (newSViv (wcount)));
3147 else
3148 {
3149 int i;
3150 EXTEND (SP, wcount);
3151 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 }
3154}
3155
3156MODULE = Coro::State PACKAGE = Coro::Signal
3157
3158SV *
3159new (SV *klass)
2566 PPCODE: 3160 CODE:
3161 RETVAL = sv_bless (
3162 coro_waitarray_new (aTHX_ 0),
3163 GvSTASH (CvGV (cv))
3164 );
3165 OUTPUT:
3166 RETVAL
3167
3168void
3169wait (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3172
3173void
3174broadcast (SV *self)
3175 CODE:
2567{ 3176{
2568 AV *av = (AV *)SvRV (state); 3177 AV *av = (AV *)SvRV (self);
2569 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3178 coro_signal_wake (aTHX_ av, AvFILLp (av));
2570 int i; 3179}
2571 3180
2572 errno = data->errorno; 3181void
2573 PL_laststype = data->laststype; 3182send (SV *self)
2574 PL_laststatval = data->laststatval; 3183 CODE:
2575 PL_statcache = data->statcache; 3184{
3185 AV *av = (AV *)SvRV (self);
2576 3186
2577 EXTEND (SP, AvFILLp (av)); 3187 if (AvFILLp (av))
2578 for (i = 0; i < AvFILLp (av); ++i) 3188 coro_signal_wake (aTHX_ av, 1);
2579 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3189 else
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2580} 3191}
3192
3193IV
3194awaited (SV *self)
3195 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT:
3198 RETVAL
2581 3199
2582 3200
2583MODULE = Coro::State PACKAGE = Coro::AnyEvent 3201MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584 3202
2585BOOT: 3203BOOT:
2586 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587 3205
2588SV * 3206void
2589_schedule (...) 3207_schedule (...)
2590 PROTOTYPE: @
2591 CODE: 3208 CODE:
2592{ 3209{
2593 static int incede; 3210 static int incede;
2594 3211
2595 api_cede_notself (aTHX); 3212 api_cede_notself (aTHX);
… …
2601 sv_setsv (sv_activity, &PL_sv_undef); 3218 sv_setsv (sv_activity, &PL_sv_undef);
2602 if (coro_nready >= incede) 3219 if (coro_nready >= incede)
2603 { 3220 {
2604 PUSHMARK (SP); 3221 PUSHMARK (SP);
2605 PUTBACK; 3222 PUTBACK;
2606 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2607 SPAGAIN;
2608 } 3224 }
2609 3225
2610 --incede; 3226 --incede;
2611} 3227}
2612 3228
2613 3229
2614MODULE = Coro::State PACKAGE = PerlIO::cede 3230MODULE = Coro::State PACKAGE = Coro::AIO
2615 3231
2616BOOT: 3232void
2617 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3233_register (char *target, char *proto, SV *req)
3234 CODE:
3235{
3236 CV *req_cv = coro_sv_2cv (req);
3237 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241}
2618 3242

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