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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 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
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192 171
193static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 174static SV *rv_diehook;
196static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 196};
218 197
219/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 199typedef struct coro_cctx
200{
221 struct coro_cctx *next; 201 struct coro_cctx *next;
222 202
223 /* the stack */ 203 /* the stack */
224 void *sptr; 204 void *sptr;
225 size_t ssize; 205 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 225};
246 226
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 228typedef struct
229{
249 SV *defsv; 230 SV *defsv;
250 AV *defav; 231 AV *defav;
251 SV *errsv; 232 SV *errsv;
252 SV *irsgv; 233 SV *irsgv;
253#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
257 238
258#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))
259 240
260/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
261struct coro { 242struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 244 coro_cctx *cctx;
264 245
265 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 248 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
268 250
251 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
272 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);
273 257
274 /* statistics */ 258 /* statistics */
275 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
276 260
277 /* coro process data */ 261 /* coro process data */
278 int prio; 262 int prio;
279 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
280 265
281 /* async_pool */ 266 /* async_pool */
282 SV *saved_deffh; 267 SV *saved_deffh;
283 268
284 /* linked list */ 269 /* linked list */
285 struct coro *next, *prev; 270 struct coro *next, *prev;
286}; 271};
287 272
288typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
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 */
279static struct CoroSLF slf_frame; /* the current slf frame */
290 280
291/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
292 282
293#define PRIO_MAX 3 283#define PRIO_MAX 3
294#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
299 289
300/* for Coro.pm */ 290/* for Coro.pm */
301static SV *coro_current; 291static SV *coro_current;
302static SV *coro_readyhook; 292static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready; 294static CV *cv_coro_run;
305static struct coro *coro_first; 295static struct coro *coro_first;
296#define coro_nready coroapi.nready
306 297
307/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
308 299
309static SV * 300static SV *
310coro_get_sv (pTHX_ const char *name, int create) 301coro_get_sv (pTHX_ const char *name, int create)
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 325 get_hv (name, create);
335#endif 326#endif
336 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);
337} 337}
338 338
339static AV * 339static AV *
340coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
341{ 341{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 396
397 return 0; 397 return 0;
398} 398}
399 399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 402
403static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 404 0, 0, 0, 0,
405 coro_cv_free 405 coro_cv_free
406}; 406};
407 407
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
408#define CORO_MAGIC(sv, type) \ 413#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 414 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 415 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 416 : 0)
414 417
415#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)
416#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)
417 420
418INLINE struct coro * 421INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
420{ 423{
421 HV *stash; 424 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 441 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
440} 443}
441 444
442#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))
443 450
444/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
445static void 452static void
446get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
447{ 454{
… …
453 else 460 else
454 { 461 {
455#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 463 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 464 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
462#else 469#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
514 CvPADLIST (cv) = (AV *)POPs; 521 CvPADLIST (cv) = (AV *)POPs;
515 } 522 }
516 523
517 PUTBACK; 524 PUTBACK;
518 } 525 }
526
527 slf_frame = c->slf_frame;
528 CORO_THROW = c->except;
519} 529}
520 530
521static void 531static void
522save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
523{ 533{
534 c->except = CORO_THROW;
535 c->slf_frame = slf_frame;
536
524 { 537 {
525 dSP; 538 dSP;
526 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 540 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 541 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 608 #undef VAR
596 } 609 }
597} 610}
598 611
599/* 612/*
600 * allocate various perl stacks. This is an exact copy 613 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
604 */ 617 */
605#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
607#else 620#else
608static void 621static void
609coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
610{ 623{
611 PL_curstackinfo = new_stackinfo(32, 8); 624 PL_curstackinfo = new_stackinfo(32, 8);
… …
712#endif 725#endif
713 } 726 }
714 } 727 }
715 728
716 return rss; 729 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 730}
745 731
746/** coroutine stack handling ************************************************/ 732/** coroutine stack handling ************************************************/
747 733
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 734static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 820
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 822}
837 823
838static void 824static void
825prepare_nop (pTHX_ struct coro_transfer_args *ta)
826{
827 /* kind of mega-hacky, but works */
828 ta->next = ta->prev = (struct coro *)ta;
829}
830
831static int
832slf_check_nop (pTHX_ struct CoroSLF *frame)
833{
834 return 0;
835}
836
837static UNOP coro_setup_op;
838
839static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
840{ 841{
841 /* 842 /*
842 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
843 */ 844 */
… …
870 { 871 {
871 dSP; 872 dSP;
872 UNOP myop; 873 UNOP myop;
873 874
874 Zero (&myop, 1, UNOP); 875 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
877 879
878 PUSHMARK (SP); 880 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 882 PUTBACK;
881 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 885 }
885 886
886 /* 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
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 889 */
890 SLF_HEAD; 890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
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;
891} 903}
892 904
893static void 905static void
894coro_destruct (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
895{ 907{
… …
919 931
920 SvREFCNT_dec (PL_diehook); 932 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 933 SvREFCNT_dec (PL_warnhook);
922 934
923 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
925 937
926 coro_destruct_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
927} 939}
928 940
929INLINE void 941INLINE void
… …
939static int 951static int
940runops_trace (pTHX) 952runops_trace (pTHX)
941{ 953{
942 COP *oldcop = 0; 954 COP *oldcop = 0;
943 int oldcxix = -2; 955 int oldcxix = -2;
944 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 */
945 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
946 958
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 960 {
949 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
1016 SAVETMPS; 1028 SAVETMPS;
1017 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1030 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1032 PUSHs (fullname);
1021 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);
1022 PUTBACK; 1034 PUTBACK;
1023 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);
1024 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);
1025 SPAGAIN; 1037 SPAGAIN;
1026 FREETMPS; 1038 FREETMPS;
… …
1058 1070
1059 TAINT_NOT; 1071 TAINT_NOT;
1060 return 0; 1072 return 0;
1061} 1073}
1062 1074
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame;
1077
1063static void 1078static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1080{
1066 ta->prev = (struct coro *)cctx; 1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1082 ta->next = 0;
1068} 1083}
1069 1084
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1085static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1087{
1073/* 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 */
1074static void NOINLINE 1094static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
1076{ 1096{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
1081 1098
1082 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
1084 1101
1085 Zero (&myop, 1, UNOP); 1102 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
1087 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));
1088 1106
1089 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1109 cctx_ssl_frame = slf_frame;
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
1093 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
1094 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1113}
1098 1114
1099/* 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 */
1100INLINE void 1116INLINE void
1101transfer_tail (pTHX) 1117transfer_tail (pTHX)
1102{ 1118{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1119 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1120}
1119 1121
1120/* 1122/*
1121 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1124 */
… …
1129# endif 1131# endif
1130#endif 1132#endif
1131 { 1133 {
1132 dTHX; 1134 dTHX;
1133 1135
1134 /* we are the alternative tail to pp_set_stacklevel */ 1136 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1137 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
1140 1139
1141 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
1143 1142
1144 /* cctx_run is the alternative tail of transfer() */ 1143 /* cctx_run is the alternative tail of transfer() */
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
… …
1497# define MGf_DUP 0 1499# define MGf_DUP 0
1498#endif 1500#endif
1499}; 1501};
1500 1502
1501static void 1503static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1504prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1505{
1504 ta->prev = SvSTATE (prev_sv); 1506 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1507 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1508 TRANSFER_CHECK (*ta);
1507} 1509}
1508 1510
1509static void 1511static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1512api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1513{
1512 dTHX;
1513 struct transfer_args ta; 1514 struct coro_transfer_args ta;
1514 1515
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1517 TRANSFER (ta, 1);
1517} 1518}
1518 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
1519/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1520 1544
1521static void 1545INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1523{ 1547{
1524 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));
1525} 1549}
1526 1550
1527static SV * 1551INLINE SV *
1528coro_deq (pTHX) 1552coro_deq (pTHX)
1529{ 1553{
1530 int prio; 1554 int prio;
1531 1555
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1535 1559
1536 return 0; 1560 return 0;
1537} 1561}
1538 1562
1539static int 1563static int
1540api_ready (SV *coro_sv) 1564api_ready (pTHX_ SV *coro_sv)
1541{ 1565{
1542 dTHX;
1543 struct coro *coro; 1566 struct coro *coro;
1544 SV *sv_hook; 1567 SV *sv_hook;
1545 void (*xs_hook)(void); 1568 void (*xs_hook)(void);
1546 1569
1547 if (SvROK (coro_sv)) 1570 if (SvROK (coro_sv))
… …
1552 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1553 return 0; 1576 return 0;
1554 1577
1555 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1556 1579
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1582
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1583 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1584 ++coro_nready;
1564 1585
1565 UNLOCK;
1566
1567 if (sv_hook) 1586 if (sv_hook)
1568 { 1587 {
1569 dSP; 1588 dSP;
1570 1589
1571 ENTER; 1590 ENTER;
1572 SAVETMPS; 1591 SAVETMPS;
1573 1592
1574 PUSHMARK (SP); 1593 PUSHMARK (SP);
1575 PUTBACK; 1594 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1596
1579 FREETMPS; 1597 FREETMPS;
1580 LEAVE; 1598 LEAVE;
1581 } 1599 }
1582 1600
… …
1585 1603
1586 return 1; 1604 return 1;
1587} 1605}
1588 1606
1589static int 1607static int
1590api_is_ready (SV *coro_sv) 1608api_is_ready (pTHX_ SV *coro_sv)
1591{ 1609{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1610 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1611}
1596 1612
1597INLINE void 1613INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1614prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1599{ 1615{
1600 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1601 1617
1602 for (;;) 1618 for (;;)
1603 { 1619 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX); 1620 next_sv = coro_deq (aTHX);
1606 1621
1607 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1609 { 1624 {
1610 dSP; 1625 dSP;
1611 UNLOCK;
1612 1626
1613 ENTER; 1627 ENTER;
1614 SAVETMPS; 1628 SAVETMPS;
1615 1629
1616 PUSHMARK (SP); 1630 PUSHMARK (SP);
1617 PUTBACK; 1631 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1619 SPAGAIN;
1620 1633
1621 FREETMPS; 1634 FREETMPS;
1622 LEAVE; 1635 LEAVE;
1623 continue; 1636 continue;
1624 } 1637 }
1625 1638
1626 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1627 1640
1628 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 { 1643 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1634 continue; 1646 continue;
1635 } 1647 }
1636 1648
1637 --coro_nready; 1649 --coro_nready;
1638 UNLOCK;
1639 break; 1650 break;
1640 } 1651 }
1641 1652
1642 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1644 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1645 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1646 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));
1647 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1649 1660
1650 LOCK;
1651 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1653 UNLOCK;
1654} 1663}
1655 1664
1656INLINE void 1665INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1667{
1659 api_ready (coro_current); 1668 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1669 prepare_schedule (aTHX_ ta);
1661} 1670}
1662 1671
1663static void 1672INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1674{
1666 SV *prev = SvRV (coro_current); 1675 SV *prev = SvRV (coro_current);
1667 1676
1668 if (coro_nready) 1677 if (coro_nready)
1669 { 1678 {
1670 prepare_schedule (aTHX_ ta); 1679 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1680 api_ready (aTHX_ prev);
1672 } 1681 }
1673 else 1682 else
1674 ta->prev = ta->next = SvSTATE (prev); 1683 prepare_nop (aTHX_ ta);
1675} 1684}
1676 1685
1677static void 1686static void
1678api_schedule (void) 1687api_schedule (pTHX)
1679{ 1688{
1680 dTHX;
1681 struct transfer_args ta; 1689 struct coro_transfer_args ta;
1682 1690
1683 prepare_schedule (aTHX_ &ta); 1691 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1692 TRANSFER (ta, 1);
1685} 1693}
1686 1694
1687static int 1695static int
1688api_cede (void) 1696api_cede (pTHX)
1689{ 1697{
1690 dTHX;
1691 struct transfer_args ta; 1698 struct coro_transfer_args ta;
1692 1699
1693 prepare_cede (aTHX_ &ta); 1700 prepare_cede (aTHX_ &ta);
1694 1701
1695 if (expect_true (ta.prev != ta.next)) 1702 if (expect_true (ta.prev != ta.next))
1696 { 1703 {
… …
1700 else 1707 else
1701 return 0; 1708 return 0;
1702} 1709}
1703 1710
1704static int 1711static int
1705api_cede_notself (void) 1712api_cede_notself (pTHX)
1706{ 1713{
1707 if (coro_nready) 1714 if (coro_nready)
1708 { 1715 {
1709 dTHX;
1710 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1711 1717
1712 prepare_cede_notself (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1719 TRANSFER (ta, 1);
1714 return 1; 1720 return 1;
1715 } 1721 }
1716 else 1722 else
1717 return 0; 1723 return 0;
1718} 1724}
1719 1725
1720static void 1726static void
1721api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1728{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1725 1730
1726 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1727 { 1732 {
1728 if (!coro->cctx) 1733 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1734 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1732 1737
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1739 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1741 {
… …
1741 else 1746 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1748 }
1744} 1749}
1745 1750
1746#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
1747static int 1781static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1749{ 1783{
1750 AV *padlist; 1784 SV *data = (SV *)frame->data;
1751 AV *av = (AV *)mg->mg_obj; 1785
1786 if (CORO_THROW)
1787 return 0;
1752 1788
1753 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 }
1754 1808
1755 return 0; 1809 return 0;
1756} 1810}
1757 1811
1758static MGVTBL coro_gensub_vtbl = { 1812static void
1759 0, 0, 0, 0, 1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 1814{
1761}; 1815 SV *cb;
1762#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}
1763 2075
1764/*****************************************************************************/ 2076/*****************************************************************************/
1765/* PerlIO::cede */ 2077/* PerlIO::cede */
1766 2078
1767typedef struct 2079typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2108 double now = nvtime ();
1797 2109
1798 if (now >= self->next) 2110 if (now >= self->next)
1799 { 2111 {
1800 api_cede (); 2112 api_cede (aTHX);
1801 self->next = now + self->every; 2113 self->next = now + self->every;
1802 } 2114 }
1803 2115
1804 return PerlIOBuf_flush (aTHX_ f); 2116 return PerlIOBuf_flush (aTHX_ f);
1805} 2117}
… …
1835 PerlIOBuf_get_cnt, 2147 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2148 PerlIOBuf_set_ptrcnt,
1837}; 2149};
1838 2150
1839/*****************************************************************************/ 2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
1840 2153
1841static const CV *slf_cv; /* for quick consistency check */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *slf_arg0;
1845static SV *slf_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2154static SV *
1851pp_restore (pTHX) 2155coro_waitarray_new (pTHX_ int count)
1852{ 2156{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV ();
2159 SV **ary;
2160
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);
2169
2170 return newRV_noinc ((SV *)av);
2171}
2172
2173/* semaphore */
2174
2175static void
2176coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2177{
2178 SV *count_sv = AvARRAY (av)[0];
2179 IV count = SvIVX (count_sv);
2180
2181 count += adjust;
2182 SvIVX (count_sv) = count;
2183
2184 /* now wake up as many waiters as are expected to lock */
2185 while (count > 0 && AvFILLp (av) > 0)
2186 {
2187 SV *cb;
2188
2189 /* swap first two elements so we can shift a waiter */
2190 AvARRAY (av)[0] = AvARRAY (av)[1];
2191 AvARRAY (av)[1] = count_sv;
2192 cb = av_shift (av);
2193
2194 if (SvOBJECT (cb))
2195 {
2196 api_ready (aTHX_ cb);
2197 --count;
2198 }
2199 else if (SvTYPE (cb) == SVt_PVCV)
2200 {
2201 dSP;
2202 PUSHMARK (SP);
2203 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2204 PUTBACK;
2205 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2206 }
2207
2208 SvREFCNT_dec (cb);
2209 }
2210}
2211
2212static void
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}
2218
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)
2229 {
2230 SvSTATE_current->on_destroy = 0;
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 */
2459 {
1853 dSP; 2460 dSP;
2461 int i;
1854 2462
2463 EXTEND (SP, AvFILLp (state) + 1);
2464 for (i = 0; i <= AvFILLp (state); ++i)
2465 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2466
2467 PUTBACK;
2468 }
2469
2470 return 0;
2471}
2472
2473static void
2474slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2475{
2476 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2477 SV *coro_hv = SvRV (coro_current);
2478 struct coro *coro = SvSTATE_hv (coro_hv);
2479
2480 /* put our coroutine id on the state arg */
2481 av_push (state, SvREFCNT_inc_NN (coro_hv));
2482
2483 /* first see whether we have a non-zero priority and set it as AIO prio */
2484 if (coro->prio)
2485 {
2486 dSP;
2487
2488 static SV *prio_cv;
2489 static SV *prio_sv;
2490
2491 if (expect_false (!prio_cv))
2492 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0);
2495 }
2496
2497 PUSHMARK (SP);
2498 sv_setiv (prio_sv, coro->prio);
2499 XPUSHs (prio_sv);
2500
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
1855 PUSHMARK (SP); 2511 PUSHMARK (SP);
1856 2512
1857 EXTEND (SP, 3); 2513 /* first push all args to the stack */
1858 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2514 EXTEND (SP, items + 1);
1859 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1860 PUSHs ((SV *)CvGV (slf_cv));
1861 2515
1862 RETURNOP (slf_restore.op_first); 2516 for (i = 0; i < items; ++i)
1863} 2517 PUSHs (arg [i]);
1864 2518
1865#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2519 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2521
1867/* declare prototype */ 2522 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 * SLF stands for "schedule-like-function".
1875 */
1876static OP *
1877pp_slf (pTHX)
1878{
1879 dSP;
1880 struct transfer_args ta;
1881 SV **arg = PL_stack_base + TOPMARK + 1;
1882 int items = SP - arg; /* args without function object */
1883
1884 /* do a quick consistency check on the "function" object, and if it isn't */
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2523 PUTBACK;
1901 switch (PL_op->op_private & OPpENTERSUB_SLF) 2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
1902 {
1903 case 0:
1904 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905 break;
1906
1907 case 1:
1908 if (items != 2)
1909 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912 break;
1913
1914 case 2:
1915 prepare_schedule (aTHX_ &ta);
1916 break;
1917
1918 case 3:
1919 prepare_cede (aTHX_ &ta);
1920 break;
1921
1922 case 4:
1923 prepare_cede_notself (aTHX_ &ta);
1924 break;
1925
1926 case 5:
1927 abort ();
1928
1929 default:
1930 abort ();
1931 } 2525 }
1932 2526
1933 TRANSFER (ta, 0); 2527 /* now that the requets is going, we loop toll we have a result */
1934 SPAGAIN; 2528 frame->data = (void *)state;
1935 2529 frame->prepare = prepare_schedule;
1936 PUTBACK; 2530 frame->check = slf_check_aio_req;
1937 SLF_TAIL;
1938 SPAGAIN;
1939 RETURN;
1940} 2531}
1941 2532
1942static void 2533static void
1943coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2534coro_aio_req_xs (pTHX_ CV *cv)
1944{ 2535{
1945 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2536 dXSARGS;
1946 2537
1947 assert (("FATAL: SLF call with illegal CV value", CvGV (cv))); 2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1948 slf_cv = cv;
1949 2539
1950 /* we patch the op, and then re-run the whole call */ 2540 XSRETURN_EMPTY;
1951 /* we have to put the same argument on the stack for this to work */
1952 /* and this will be done by pp_restore */
1953 slf_restore.op_next = (OP *)&slf_restore;
1954 slf_restore.op_type = OP_NULL;
1955 slf_restore.op_ppaddr = pp_restore;
1956 slf_restore.op_first = PL_op;
1957
1958 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1959 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1960
1961 PL_op->op_ppaddr = pp_slf;
1962 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1963
1964 PL_op = (OP *)&slf_restore;
1965} 2541}
2542
2543/*****************************************************************************/
1966 2544
1967MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968 2546
1969PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1970 2548
1971BOOT: 2549BOOT:
1972{ 2550{
1973#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1974 MUTEX_INIT (&coro_lock);
1975# if CORO_PTHREAD 2552# if CORO_PTHREAD
1976 coro_thx = PERL_GET_CONTEXT; 2553 coro_thx = PERL_GET_CONTEXT;
1977# endif 2554# endif
1978#endif 2555#endif
1979 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
… …
2000 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
2001 2578
2002 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
2003 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
2004 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
2005 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
2006 coroapi.rev = CORO_API_REVISION; 2595 coroapi.rev = CORO_API_REVISION;
2596
2007 coroapi.transfer = api_transfer; 2597 coroapi.transfer = api_transfer;
2598
2599 coroapi.sv_state = SvSTATE_;
2600 coroapi.execute_slf = api_execute_slf;
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;
2008 2605
2009 { 2606 {
2010 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2011 2608
2012 if (!svp) croak ("Time::HiRes is required"); 2609 if (!svp) croak ("Time::HiRes is required");
… …
2018 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2019} 2616}
2020 2617
2021SV * 2618SV *
2022new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
2023 CODE: 2622 CODE:
2024{ 2623{
2025 struct coro *coro; 2624 struct coro *coro;
2026 MAGIC *mg; 2625 MAGIC *mg;
2027 HV *hv; 2626 HV *hv;
2627 CV *cb;
2028 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 }
2029 2643
2030 Newz (0, coro, 1, struct coro); 2644 Newz (0, coro, 1, struct coro);
2031 coro->args = newAV (); 2645 coro->args = newAV ();
2032 coro->flags = CF_NEW; 2646 coro->flags = CF_NEW;
2033 2647
… …
2038 coro->hv = hv = newHV (); 2652 coro->hv = hv = newHV ();
2039 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);
2040 mg->mg_flags |= MGf_DUP; 2654 mg->mg_flags |= MGf_DUP;
2041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2042 2656
2657 if (items > 1)
2658 {
2043 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
2044 for (i = 1; i < items; i++) 2669 for (i = 2; i < items; i++)
2045 av_push (coro->args, newSVsv (ST (i))); 2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2046} 2672}
2047 OUTPUT: 2673 OUTPUT:
2048 RETVAL 2674 RETVAL
2049 2675
2050void 2676void
2051_set_stacklevel (...) 2677transfer (...)
2052 ALIAS: 2678 PROTOTYPE: $$
2053 Coro::State::transfer = 1 2679 CODE:
2054 Coro::schedule = 2 2680 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2055 Coro::cede = 3
2056 Coro::cede_notself = 4
2057 CODE:
2058 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2059 2681
2060bool 2682bool
2061_destroy (SV *coro_sv) 2683_destroy (SV *coro_sv)
2062 CODE: 2684 CODE:
2063 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2070 CODE: 2692 CODE:
2071 _exit (code); 2693 _exit (code);
2072 2694
2073int 2695int
2074cctx_stacksize (int new_stacksize = 0) 2696cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$
2075 CODE: 2698 CODE:
2076 RETVAL = cctx_stacksize; 2699 RETVAL = cctx_stacksize;
2077 if (new_stacksize) 2700 if (new_stacksize)
2078 { 2701 {
2079 cctx_stacksize = new_stacksize; 2702 cctx_stacksize = new_stacksize;
… …
2082 OUTPUT: 2705 OUTPUT:
2083 RETVAL 2706 RETVAL
2084 2707
2085int 2708int
2086cctx_max_idle (int max_idle = 0) 2709cctx_max_idle (int max_idle = 0)
2710 PROTOTYPE: ;$
2087 CODE: 2711 CODE:
2088 RETVAL = cctx_max_idle; 2712 RETVAL = cctx_max_idle;
2089 if (max_idle > 1) 2713 if (max_idle > 1)
2090 cctx_max_idle = max_idle; 2714 cctx_max_idle = max_idle;
2091 OUTPUT: 2715 OUTPUT:
2092 RETVAL 2716 RETVAL
2093 2717
2094int 2718int
2095cctx_count () 2719cctx_count ()
2720 PROTOTYPE:
2096 CODE: 2721 CODE:
2097 RETVAL = cctx_count; 2722 RETVAL = cctx_count;
2098 OUTPUT: 2723 OUTPUT:
2099 RETVAL 2724 RETVAL
2100 2725
2101int 2726int
2102cctx_idle () 2727cctx_idle ()
2728 PROTOTYPE:
2103 CODE: 2729 CODE:
2104 RETVAL = cctx_idle; 2730 RETVAL = cctx_idle;
2105 OUTPUT: 2731 OUTPUT:
2106 RETVAL 2732 RETVAL
2107 2733
2108void 2734void
2109list () 2735list ()
2736 PROTOTYPE:
2110 PPCODE: 2737 PPCODE:
2111{ 2738{
2112 struct coro *coro; 2739 struct coro *coro;
2113 for (coro = coro_first; coro; coro = coro->next) 2740 for (coro = coro_first; coro; coro = coro->next)
2114 if (coro->hv) 2741 if (coro->hv)
… …
2176 2803
2177void 2804void
2178throw (Coro::State self, SV *throw = &PL_sv_undef) 2805throw (Coro::State self, SV *throw = &PL_sv_undef)
2179 PROTOTYPE: $;$ 2806 PROTOTYPE: $;$
2180 CODE: 2807 CODE:
2808{
2809 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except;
2181 SvREFCNT_dec (self->throw); 2811 SvREFCNT_dec (*throwp);
2182 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2813}
2183 2814
2184void 2815void
2185api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$
2818 C_ARGS: aTHX_ coro, flags
2186 2819
2187SV * 2820SV *
2188has_cctx (Coro::State coro) 2821has_cctx (Coro::State coro)
2189 PROTOTYPE: $ 2822 PROTOTYPE: $
2190 CODE: 2823 CODE:
… …
2214 OUTPUT: 2847 OUTPUT:
2215 RETVAL 2848 RETVAL
2216 2849
2217void 2850void
2218force_cctx () 2851force_cctx ()
2852 PROTOTYPE:
2219 CODE: 2853 CODE:
2220 struct coro *coro = SvSTATE (coro_current);
2221 coro->cctx->idle_sp = 0; 2854 SvSTATE_current->cctx->idle_sp = 0;
2222 2855
2223void 2856void
2224swap_defsv (Coro::State self) 2857swap_defsv (Coro::State self)
2225 PROTOTYPE: $ 2858 PROTOTYPE: $
2226 ALIAS: 2859 ALIAS:
2227 swap_defav = 1 2860 swap_defav = 1
2228 CODE: 2861 CODE:
2229 if (!self->slot) 2862 if (!self->slot)
2230 croak ("cannot swap state with coroutine that has no saved state"); 2863 croak ("cannot swap state with coroutine that has no saved state,");
2231 else 2864 else
2232 { 2865 {
2233 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2866 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2235 2868
2236 SV *tmp = *src; *src = *dst; *dst = tmp; 2869 SV *tmp = *src; *src = *dst; *dst = tmp;
2237 } 2870 }
2238 2871
2872
2239MODULE = Coro::State PACKAGE = Coro 2873MODULE = Coro::State PACKAGE = Coro
2240 2874
2241BOOT: 2875BOOT:
2242{ 2876{
2243 int i; 2877 int i;
2244 2878
2245 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2246 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2247 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2248 2882 cv_coro_run = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
2249 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2250 SvREADONLY_on (coro_current); 2884 SvREADONLY_on (coro_current);
2251 2885
2252 coro_stash = gv_stashpv ("Coro", TRUE); 2886 coro_stash = gv_stashpv ("Coro", TRUE);
2253 2887
2254 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
2267 coroapi.schedule = api_schedule; 2901 coroapi.schedule = api_schedule;
2268 coroapi.cede = api_cede; 2902 coroapi.cede = api_cede;
2269 coroapi.cede_notself = api_cede_notself; 2903 coroapi.cede_notself = api_cede_notself;
2270 coroapi.ready = api_ready; 2904 coroapi.ready = api_ready;
2271 coroapi.is_ready = api_is_ready; 2905 coroapi.is_ready = api_is_ready;
2272 coroapi.nready = &coro_nready; 2906 coroapi.nready = coro_nready;
2273 coroapi.current = coro_current; 2907 coroapi.current = coro_current;
2274 2908
2275 GCoroAPI = &coroapi; 2909 /*GCoroAPI = &coroapi;*/
2276 sv_setiv (sv, (IV)&coroapi); 2910 sv_setiv (sv, (IV)&coroapi);
2277 SvREADONLY_on (sv); 2911 SvREADONLY_on (sv);
2278 } 2912 }
2279} 2913}
2914
2915void
2916schedule (...)
2917 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2919
2920void
2921cede (...)
2922 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede);
2924
2925void
2926cede_notself (...)
2927 CODE:
2928 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2280 2929
2281void 2930void
2282_set_current (SV *current) 2931_set_current (SV *current)
2283 PROTOTYPE: $ 2932 PROTOTYPE: $
2284 CODE: 2933 CODE:
… …
2287 2936
2288void 2937void
2289_set_readyhook (SV *hook) 2938_set_readyhook (SV *hook)
2290 PROTOTYPE: $ 2939 PROTOTYPE: $
2291 CODE: 2940 CODE:
2292 LOCK;
2293 SvREFCNT_dec (coro_readyhook); 2941 SvREFCNT_dec (coro_readyhook);
2294 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2295 UNLOCK;
2296 2943
2297int 2944int
2298prio (Coro::State coro, int newprio = 0) 2945prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$
2299 ALIAS: 2947 ALIAS:
2300 nice = 1 2948 nice = 1
2301 CODE: 2949 CODE:
2302{ 2950{
2303 RETVAL = coro->prio; 2951 RETVAL = coro->prio;
… …
2318 2966
2319SV * 2967SV *
2320ready (SV *self) 2968ready (SV *self)
2321 PROTOTYPE: $ 2969 PROTOTYPE: $
2322 CODE: 2970 CODE:
2323 RETVAL = boolSV (api_ready (self)); 2971 RETVAL = boolSV (api_ready (aTHX_ self));
2324 OUTPUT: 2972 OUTPUT:
2325 RETVAL 2973 RETVAL
2326 2974
2327int 2975int
2328nready (...) 2976nready (...)
… …
2335# for async_pool speedup 2983# for async_pool speedup
2336void 2984void
2337_pool_1 (SV *cb) 2985_pool_1 (SV *cb)
2338 CODE: 2986 CODE:
2339{ 2987{
2340 struct coro *coro = SvSTATE (coro_current);
2341 HV *hv = (HV *)SvRV (coro_current); 2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2342 AV *defav = GvAV (PL_defgv); 2990 AV *defav = GvAV (PL_defgv);
2343 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2344 AV *invoke_av; 2992 AV *invoke_av;
2345 int i, len; 2993 int i, len;
2346 2994
… …
2367 { 3015 {
2368 av_fill (defav, len - 1); 3016 av_fill (defav, len - 1);
2369 for (i = 0; i < len; ++i) 3017 for (i = 0; i < len; ++i)
2370 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]));
2371 } 3019 }
2372
2373 SvREFCNT_dec (invoke);
2374} 3020}
2375 3021
2376void 3022void
2377_pool_2 (SV *cb) 3023_pool_2 (SV *cb)
2378 CODE: 3024 CODE:
2379{ 3025{
2380 struct coro *coro = SvSTATE (coro_current); 3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
2381 3028
2382 sv_setsv (cb, &PL_sv_undef); 3029 sv_setsv (cb, &PL_sv_undef);
2383 3030
2384 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2385 coro->saved_deffh = 0; 3032 coro->saved_deffh = 0;
… …
2392 SvREFCNT_dec (old); 3039 SvREFCNT_dec (old);
2393 croak ("\3async_pool terminate\2\n"); 3040 croak ("\3async_pool terminate\2\n");
2394 } 3041 }
2395 3042
2396 av_clear (GvAV (PL_defgv)); 3043 av_clear (GvAV (PL_defgv));
2397 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3044 hv_store (hv, "desc", sizeof ("desc") - 1,
2398 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399 3046
2400 coro->prio = 0; 3047 coro->prio = 0;
2401 3048
2402 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403 api_trace (coro_current, 0); 3050 api_trace (aTHX_ coro_current, 0);
2404 3051
2405 av_push (av_async_pool, newSVsv (coro_current)); 3052 av_push (av_async_pool, newSVsv (coro_current));
2406} 3053}
2407 3054
2408#if 0
2409
2410void
2411_generator_call (...)
2412 PROTOTYPE: @
2413 PPCODE:
2414 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415 xxxx
2416 abort ();
2417
2418SV * 3055SV *
2419gensub (SV *sub, ...) 3056rouse_cb ()
2420 PROTOTYPE: &;@ 3057 PROTOTYPE:
2421 CODE: 3058 CODE:
2422{ 3059 RETVAL = coro_new_rouse_cb (aTHX);
2423 struct coro *coro;
2424 MAGIC *mg;
2425 CV *xcv;
2426 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2427 int i;
2428
2429 CvGV (ncv) = CvGV (cv);
2430 CvFILE (ncv) = CvFILE (cv);
2431
2432 Newz (0, coro, 1, struct coro);
2433 coro->args = newAV ();
2434 coro->flags = CF_NEW;
2435
2436 av_extend (coro->args, items - 1);
2437 for (i = 1; i < items; i++)
2438 av_push (coro->args, newSVsv (ST (i)));
2439
2440 CvISXSUB_on (ncv);
2441 CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445 CvXSUB (ncv) = CvXSUB (xcv);
2446 CvANON_on (ncv);
2447
2448 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2449 RETVAL = newRV_noinc ((SV *)ncv);
2450}
2451 OUTPUT: 3060 OUTPUT:
2452 RETVAL 3061 RETVAL
2453 3062
2454#endif
2455
2456
2457MODULE = Coro::State PACKAGE = Coro::AIO
2458
2459void 3063void
2460_get_state (SV *self) 3064rouse_wait (...)
3065 PROTOTYPE: ;$
2461 PPCODE: 3066 PPCODE:
2462{ 3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2463 AV *defav = GvAV (PL_defgv);
2464 AV *av = newAV ();
2465 int i;
2466 SV *data_sv = newSV (sizeof (struct io_state));
2467 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2468 SvCUR_set (data_sv, sizeof (struct io_state));
2469 SvPOK_only (data_sv);
2470 3068
2471 data->errorno = errno;
2472 data->laststype = PL_laststype;
2473 data->laststatval = PL_laststatval;
2474 data->statcache = PL_statcache;
2475 3069
2476 av_extend (av, AvFILLp (defav) + 1 + 1); 3070MODULE = Coro::State PACKAGE = PerlIO::cede
2477 3071
2478 for (i = 0; i <= AvFILLp (defav); ++i) 3072BOOT:
2479 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2480 3074
2481 av_push (av, data_sv);
2482 3075
2483 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3076MODULE = Coro::State PACKAGE = Coro::Semaphore
2484 3077
2485 api_ready (self); 3078SV *
2486} 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
2487 3102
2488void 3103void
2489_set_state (SV *state) 3104up (SV *self, int adjust = 1)
2490 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)
2491 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:
2492{ 3176{
2493 AV *av = (AV *)SvRV (state); 3177 AV *av = (AV *)SvRV (self);
2494 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3178 coro_signal_wake (aTHX_ av, AvFILLp (av));
2495 int i; 3179}
2496 3180
2497 errno = data->errorno; 3181void
2498 PL_laststype = data->laststype; 3182send (SV *self)
2499 PL_laststatval = data->laststatval; 3183 CODE:
2500 PL_statcache = data->statcache; 3184{
3185 AV *av = (AV *)SvRV (self);
2501 3186
2502 EXTEND (SP, AvFILLp (av)); 3187 if (AvFILLp (av))
2503 for (i = 0; i < AvFILLp (av); ++i) 3188 coro_signal_wake (aTHX_ av, 1);
2504 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3189 else
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2505} 3191}
3192
3193IV
3194awaited (SV *self)
3195 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT:
3198 RETVAL
2506 3199
2507 3200
2508MODULE = Coro::State PACKAGE = Coro::AnyEvent 3201MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509 3202
2510BOOT: 3203BOOT:
2511 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512 3205
2513SV * 3206void
2514_schedule (...) 3207_schedule (...)
2515 PROTOTYPE: @
2516 CODE: 3208 CODE:
2517{ 3209{
2518 static int incede; 3210 static int incede;
2519 3211
2520 api_cede_notself (); 3212 api_cede_notself (aTHX);
2521 3213
2522 ++incede; 3214 ++incede;
2523 while (coro_nready >= incede && api_cede ()) 3215 while (coro_nready >= incede && api_cede (aTHX))
2524 ; 3216 ;
2525 3217
2526 sv_setsv (sv_activity, &PL_sv_undef); 3218 sv_setsv (sv_activity, &PL_sv_undef);
2527 if (coro_nready >= incede) 3219 if (coro_nready >= incede)
2528 { 3220 {
2529 PUSHMARK (SP); 3221 PUSHMARK (SP);
2530 PUTBACK; 3222 PUTBACK;
2531 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 SPAGAIN;
2533 } 3224 }
2534 3225
2535 --incede; 3226 --incede;
2536} 3227}
2537 3228
2538 3229
2539MODULE = Coro::State PACKAGE = PerlIO::cede 3230MODULE = Coro::State PACKAGE = Coro::AIO
2540 3231
2541BOOT: 3232void
2542 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}
2543 3242

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