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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.311 by root, Thu Nov 20 01:12:08 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
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
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. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
121#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
123 131
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 133
126#if __GNUC__ >= 3 134#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
138 146
139#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
140 148
141#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
142 151
143#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 153# if CORO_PTHREAD
149static void *coro_thx; 154static void *coro_thx;
150# endif 155# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 156#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 157
174static 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);
175 163
176static U32 cctx_gen; 164static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 168static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 171
190static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 174static SV *rv_diehook;
193static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 196};
215 197
216/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 199typedef struct coro_cctx
200{
218 struct coro_cctx *next; 201 struct coro_cctx *next;
219 202
220 /* the stack */ 203 /* the stack */
221 void *sptr; 204 void *sptr;
222 size_t ssize; 205 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 225};
243 226
244/* 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 */
245typedef struct { 228typedef struct
229{
246 SV *defsv; 230 SV *defsv;
247 AV *defav; 231 AV *defav;
248 SV *errsv; 232 SV *errsv;
249 SV *irsgv; 233 SV *irsgv;
250#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
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 a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
258struct coro { 242struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 244 coro_cctx *cctx;
261 245
262 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 248 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
265 250
251 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
269 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);
270 257
271 /* statistics */ 258 /* statistics */
272 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
273 260
274 /* coro process data */ 261 /* coro process data */
275 int prio; 262 int prio;
276 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
277 265
278 /* async_pool */ 266 /* async_pool */
279 SV *saved_deffh; 267 SV *saved_deffh;
280 268
281 /* linked list */ 269 /* linked list */
282 struct coro *next, *prev; 270 struct coro *next, *prev;
283}; 271};
284 272
285typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
286typedef 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 */
287 280
288/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
289 282
290#define PRIO_MAX 3 283#define PRIO_MAX 3
291#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
296 289
297/* for Coro.pm */ 290/* for Coro.pm */
298static SV *coro_current; 291static SV *coro_current;
299static SV *coro_readyhook; 292static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 294static CV *cv_coro_run;
302static struct coro *coro_first; 295static struct coro *coro_first;
296#define coro_nready coroapi.nready
303 297
304/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
305 299
306static SV * 300static SV *
307coro_get_sv (pTHX_ const char *name, int create) 301coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
330 /* 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 */
331 get_hv (name, create); 325 get_hv (name, create);
332#endif 326#endif
333 return get_hv (name, create); 327 return get_hv (name, create);
328}
329
330/* may croak */
331INLINE CV *
332coro_sv_2cv (pTHX_ SV *sv)
333{
334 HV *st;
335 GV *gvp;
336 return sv_2cv (sv, &st, &gvp, 0);
334} 337}
335 338
336static AV * 339static AV *
337coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
338{ 341{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 396
394 return 0; 397 return 0;
395} 398}
396 399
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 402
400static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 404 0, 0, 0, 0,
402 coro_cv_free 405 coro_cv_free
403}; 406};
404 407
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
405#define CORO_MAGIC(sv, type) \ 413#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 414 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 415 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 416 : 0)
411 417
412#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)
413#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)
414 420
415INLINE struct coro * 421INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
417{ 423{
418 HV *stash; 424 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 441 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
437} 443}
438 444
439#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))
440 450
441/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
442static void 452static void
443get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
444{ 454{
… …
450 else 460 else
451 { 461 {
452#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 463 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 464 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
459#else 469#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 521 CvPADLIST (cv) = (AV *)POPs;
512 } 522 }
513 523
514 PUTBACK; 524 PUTBACK;
515 } 525 }
526
527 slf_frame = c->slf_frame;
528 CORO_THROW = c->except;
516} 529}
517 530
518static void 531static void
519save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
520{ 533{
534 c->except = CORO_THROW;
535 c->slf_frame = slf_frame;
536
521 { 537 {
522 dSP; 538 dSP;
523 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 540 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 541 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 608 #undef VAR
593 } 609 }
594} 610}
595 611
596/* 612/*
597 * allocate various perl stacks. This is an exact copy 613 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
601 */ 617 */
602#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
604#else 620#else
605static void 621static void
606coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
607{ 623{
608 PL_curstackinfo = new_stackinfo(32, 8); 624 PL_curstackinfo = new_stackinfo(32, 8);
… …
709#endif 725#endif
710 } 726 }
711 } 727 }
712 728
713 return rss; 729 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 730}
742 731
743/** coroutine stack handling ************************************************/ 732/** coroutine stack handling ************************************************/
744 733
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 734static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 820
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 822}
834 823
835static 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 */
836coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
837{ 841{
838 /* 842 /*
839 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
840 */ 844 */
… …
867 { 871 {
868 dSP; 872 dSP;
869 UNOP myop; 873 UNOP myop;
870 874
871 Zero (&myop, 1, UNOP); 875 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
874 879
875 PUSHMARK (SP); 880 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 882 PUTBACK;
878 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 885 }
882 886
883 /* 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
884 * 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.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 889 */
887 SSL_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;
888} 903}
889 904
890static void 905static void
891coro_destruct (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
892{ 907{
… …
916 931
917 SvREFCNT_dec (PL_diehook); 932 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 933 SvREFCNT_dec (PL_warnhook);
919 934
920 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
922 937
923 coro_destruct_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
924} 939}
925 940
926INLINE void 941INLINE void
… …
936static int 951static int
937runops_trace (pTHX) 952runops_trace (pTHX)
938{ 953{
939 COP *oldcop = 0; 954 COP *oldcop = 0;
940 int oldcxix = -2; 955 int oldcxix = -2;
941 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 */
942 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
943 958
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 960 {
946 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
1013 SAVETMPS; 1028 SAVETMPS;
1014 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1030 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1032 PUSHs (fullname);
1018 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);
1019 PUTBACK; 1034 PUTBACK;
1020 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);
1021 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);
1022 SPAGAIN; 1037 SPAGAIN;
1023 FREETMPS; 1038 FREETMPS;
… …
1055 1070
1056 TAINT_NOT; 1071 TAINT_NOT;
1057 return 0; 1072 return 0;
1058} 1073}
1059 1074
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame;
1077
1060static void 1078static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1080{
1063 ta->prev = (struct coro *)cctx; 1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1064 ta->next = 0; 1082 ta->next = 0;
1065} 1083}
1066 1084
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1085static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1087{
1070/* 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 */
1071static void NOINLINE 1094static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1096{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
1078 1098
1079 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
1081 1101
1082 Zero (&myop, 1, UNOP); 1102 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
1084 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));
1085 1106
1086 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1109 cctx_ssl_frame = slf_frame;
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
1090 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
1091 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1113}
1095 1114
1096/* 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 */
1097INLINE void 1116INLINE void
1098transfer_tail (pTHX) 1117transfer_tail (pTHX)
1099{ 1118{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1119 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1120}
1116 1121
1117/* 1122/*
1118 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1124 */
… …
1126# endif 1131# endif
1127#endif 1132#endif
1128 { 1133 {
1129 dTHX; 1134 dTHX;
1130 1135
1131 /* we are the alternative tail to pp_set_stacklevel */ 1136 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1137 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
1137 1139
1138 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
1140 1142
1141 /* cctx_run is the alternative tail of transfer() */ 1143 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1144 transfer_tail (aTHX);
1143 1145
1144 /* 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 */
1145 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
1146 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 */
1147 1153
1148 /* 1154 /*
1149 * 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
1150 * 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)
1151 * 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
… …
1302/** coroutine switching *****************************************************/ 1308/** coroutine switching *****************************************************/
1303 1309
1304static void 1310static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1311transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1312{
1313 /* TODO: throwing up here is considered harmful */
1314
1307 if (expect_true (prev != next)) 1315 if (expect_true (prev != next))
1308 { 1316 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 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,");
1311 1319
1312 if (expect_false (next->flags & CF_RUNNING)) 1320 if (expect_false (next->flags & CF_RUNNING))
1313 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,");
1314 1322
1315 if (expect_false (next->flags & CF_DESTROYED)) 1323 if (expect_false (next->flags & CF_DESTROYED))
1316 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,");
1317 1325
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1326#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1327 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 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,");
1321#endif 1329#endif
1322 } 1330 }
1323} 1331}
1324 1332
1325/* always use the TRANSFER macro */ 1333/* always use the TRANSFER macro */
1326static void NOINLINE 1334static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1336{
1329 dSTACKLEVEL; 1337 dSTACKLEVEL;
1330 1338
1331 /* sometimes transfer is only called to set idle_sp */ 1339 /* sometimes transfer is only called to set idle_sp */
… …
1346 prev->flags |= CF_RUNNING; 1354 prev->flags |= CF_RUNNING;
1347 } 1355 }
1348 1356
1349 prev->flags &= ~CF_RUNNING; 1357 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1358 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1359
1354 /* first get rid of the old state */ 1360 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1361 save_perl (aTHX_ prev);
1356 1362
1357 if (expect_false (next->flags & CF_NEW)) 1363 if (expect_false (next->flags & CF_NEW))
… …
1371 prev__cctx->idle_sp == STACKLEVEL 1377 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1378 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx 1379 && !force_cctx
1374 )) 1380 ))
1375 { 1381 {
1376 /* 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 */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378 1384
1379 prev->cctx = 0; 1385 prev->cctx = 0;
1380 1386
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1389 1395
1390 ++next->usecount; 1396 ++next->usecount;
1391 1397
1392 if (expect_true (!next->cctx)) 1398 if (expect_true (!next->cctx))
1393 next->cctx = cctx_get (aTHX); 1399 next->cctx = cctx_get (aTHX);
1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397 1400
1398 if (expect_false (prev__cctx != next->cctx)) 1401 if (expect_false (prev__cctx != next->cctx))
1399 { 1402 {
1400 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
… …
1415coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1419{
1417 if (coro->flags & CF_DESTROYED) 1420 if (coro->flags & CF_DESTROYED)
1418 return 0; 1421 return 0;
1419 1422
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro);
1425
1420 coro->flags |= CF_DESTROYED; 1426 coro->flags |= CF_DESTROYED;
1421 1427
1422 if (coro->flags & CF_READY) 1428 if (coro->flags & CF_READY)
1423 { 1429 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1430 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1431 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1432 --coro_nready;
1428 UNLOCK;
1429 } 1433 }
1430 else 1434 else
1431 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 */
1432 1436
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1437 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1438 {
1435 struct coro temp; 1439 struct coro temp;
1436 1440
1437 if (coro->flags & CF_RUNNING) 1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1442
1440 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1442 1445
1443 coro_destruct (aTHX_ coro); 1446 coro_destruct (aTHX_ coro);
… …
1446 1449
1447 coro->slot = 0; 1450 coro->slot = 0;
1448 } 1451 }
1449 1452
1450 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1455 SvREFCNT_dec (coro->args);
1456 SvREFCNT_dec (CORO_THROW);
1452 1457
1453 if (coro->next) coro->next->prev = coro->prev; 1458 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1459 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1460 if (coro == coro_first) coro_first = coro->next;
1456 1461
… …
1494# define MGf_DUP 0 1499# define MGf_DUP 0
1495#endif 1500#endif
1496}; 1501};
1497 1502
1498static void 1503static void
1499prepare_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)
1500{ 1505{
1501 ta->prev = SvSTATE (prev_sv); 1506 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1507 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1508 TRANSFER_CHECK (*ta);
1504} 1509}
1505 1510
1506static void 1511static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1512api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1513{
1509 dTHX;
1510 struct transfer_args ta; 1514 struct coro_transfer_args ta;
1511 1515
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1517 TRANSFER (ta, 1);
1514} 1518}
1515 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
1516/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1517 1544
1518static void 1545INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1520{ 1547{
1521 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));
1522} 1549}
1523 1550
1524static SV * 1551INLINE SV *
1525coro_deq (pTHX) 1552coro_deq (pTHX)
1526{ 1553{
1527 int prio; 1554 int prio;
1528 1555
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1559
1533 return 0; 1560 return 0;
1534} 1561}
1535 1562
1536static int 1563static int
1537api_ready (SV *coro_sv) 1564api_ready (pTHX_ SV *coro_sv)
1538{ 1565{
1539 dTHX;
1540 struct coro *coro; 1566 struct coro *coro;
1541 SV *sv_hook; 1567 SV *sv_hook;
1542 void (*xs_hook)(void); 1568 void (*xs_hook)(void);
1543 1569
1544 if (SvROK (coro_sv)) 1570 if (SvROK (coro_sv))
… …
1549 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1550 return 0; 1576 return 0;
1551 1577
1552 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1553 1579
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1582
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1583 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1584 ++coro_nready;
1561 1585
1562 UNLOCK;
1563
1564 if (sv_hook) 1586 if (sv_hook)
1565 { 1587 {
1566 dSP; 1588 dSP;
1567 1589
1568 ENTER; 1590 ENTER;
1569 SAVETMPS; 1591 SAVETMPS;
1570 1592
1571 PUSHMARK (SP); 1593 PUSHMARK (SP);
1572 PUTBACK; 1594 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1596
1576 FREETMPS; 1597 FREETMPS;
1577 LEAVE; 1598 LEAVE;
1578 } 1599 }
1579 1600
… …
1582 1603
1583 return 1; 1604 return 1;
1584} 1605}
1585 1606
1586static int 1607static int
1587api_is_ready (SV *coro_sv) 1608api_is_ready (pTHX_ SV *coro_sv)
1588{ 1609{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1610 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1611}
1593 1612
1594INLINE void 1613INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1614prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1615{
1597 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1598 1617
1599 for (;;) 1618 for (;;)
1600 { 1619 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1620 next_sv = coro_deq (aTHX);
1603 1621
1604 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1606 { 1624 {
1607 dSP; 1625 dSP;
1608 UNLOCK;
1609 1626
1610 ENTER; 1627 ENTER;
1611 SAVETMPS; 1628 SAVETMPS;
1612 1629
1613 PUSHMARK (SP); 1630 PUSHMARK (SP);
1614 PUTBACK; 1631 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1616 SPAGAIN;
1617 1633
1618 FREETMPS; 1634 FREETMPS;
1619 LEAVE; 1635 LEAVE;
1620 continue; 1636 continue;
1621 } 1637 }
1622 1638
1623 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1624 1640
1625 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 { 1643 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1631 continue; 1646 continue;
1632 } 1647 }
1633 1648
1634 --coro_nready; 1649 --coro_nready;
1635 UNLOCK;
1636 break; 1650 break;
1637 } 1651 }
1638 1652
1639 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1642 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1643 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));
1644 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1646 1660
1647 LOCK;
1648 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1663}
1652 1664
1653INLINE void 1665INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1667{
1656 api_ready (coro_current); 1668 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1669 prepare_schedule (aTHX_ ta);
1658} 1670}
1659 1671
1660static void 1672INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1674{
1663 SV *prev = SvRV (coro_current); 1675 SV *prev = SvRV (coro_current);
1664 1676
1665 if (coro_nready) 1677 if (coro_nready)
1666 { 1678 {
1667 prepare_schedule (aTHX_ ta); 1679 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1680 api_ready (aTHX_ prev);
1669 } 1681 }
1670 else 1682 else
1671 ta->prev = ta->next = SvSTATE (prev); 1683 prepare_nop (aTHX_ ta);
1672} 1684}
1673 1685
1674static void 1686static void
1675api_schedule (void) 1687api_schedule (pTHX)
1676{ 1688{
1677 dTHX;
1678 struct transfer_args ta; 1689 struct coro_transfer_args ta;
1679 1690
1680 prepare_schedule (aTHX_ &ta); 1691 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1692 TRANSFER (ta, 1);
1682} 1693}
1683 1694
1684static int 1695static int
1685api_cede (void) 1696api_cede (pTHX)
1686{ 1697{
1687 dTHX;
1688 struct transfer_args ta; 1698 struct coro_transfer_args ta;
1689 1699
1690 prepare_cede (aTHX_ &ta); 1700 prepare_cede (aTHX_ &ta);
1691 1701
1692 if (expect_true (ta.prev != ta.next)) 1702 if (expect_true (ta.prev != ta.next))
1693 { 1703 {
… …
1697 else 1707 else
1698 return 0; 1708 return 0;
1699} 1709}
1700 1710
1701static int 1711static int
1702api_cede_notself (void) 1712api_cede_notself (pTHX)
1703{ 1713{
1704 if (coro_nready) 1714 if (coro_nready)
1705 { 1715 {
1706 dTHX;
1707 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1708 1717
1709 prepare_cede_notself (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1719 TRANSFER (ta, 1);
1711 return 1; 1720 return 1;
1712 } 1721 }
1713 else 1722 else
1714 return 0; 1723 return 0;
1715} 1724}
1716 1725
1717static void 1726static void
1718api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1728{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1722 1730
1723 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1724 { 1732 {
1725 if (!coro->cctx) 1733 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1734 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1729 1737
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1739 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1741 {
… …
1738 else 1746 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1748 }
1741} 1749}
1742 1750
1743#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
1744static int 1781static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1746{ 1783{
1747 AV *padlist; 1784 SV *data = (SV *)frame->data;
1748 AV *av = (AV *)mg->mg_obj; 1785
1786 if (CORO_THROW)
1787 return 0;
1749 1788
1750 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 }
1751 1808
1752 return 0; 1809 return 0;
1753} 1810}
1754 1811
1755static MGVTBL coro_gensub_vtbl = { 1812static void
1756 0, 0, 0, 0, 1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 1814{
1758}; 1815 SV *cb;
1759#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}
1760 2075
1761/*****************************************************************************/ 2076/*****************************************************************************/
1762/* PerlIO::cede */ 2077/* PerlIO::cede */
1763 2078
1764typedef struct 2079typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2108 double now = nvtime ();
1794 2109
1795 if (now >= self->next) 2110 if (now >= self->next)
1796 { 2111 {
1797 api_cede (); 2112 api_cede (aTHX);
1798 self->next = now + self->every; 2113 self->next = now + self->every;
1799 } 2114 }
1800 2115
1801 return PerlIOBuf_flush (aTHX_ f); 2116 return PerlIOBuf_flush (aTHX_ f);
1802} 2117}
… …
1832 PerlIOBuf_get_cnt, 2147 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2148 PerlIOBuf_set_ptrcnt,
1834}; 2149};
1835 2150
1836/*****************************************************************************/ 2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
1837 2153
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2154static SV *
1848pp_restore (pTHX) 2155coro_waitarray_new (pTHX_ int count)
1849{ 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 (aTHX_ 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 {
1850 dSP; 2460 dSP;
2461 int i;
1851 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
1852 PUSHMARK (SP); 2511 PUSHMARK (SP);
1853 2512
1854 EXTEND (SP, 3); 2513 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2514 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2515
1859 RETURNOP (ssl_restore.op_first); 2516 for (i = 0; i < items; ++i)
1860} 2517 PUSHs (arg [i]);
1861 2518
1862#define OPpENTERSUB_SSL 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))));
1863 2521
1864/* declare prototype */ 2522 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2523 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2525 }
1922 2526
1923 TRANSFER (ta, 0); 2527 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2528 frame->data = (void *)state;
1925 2529 frame->prepare = prepare_schedule;
1926skip: 2530 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2531}
1932 2532
1933static void 2533static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2534coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2535{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2536 dXSARGS;
1937 2537
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2539
1941 /* we patch the op, and then re-run the whole call */ 2540 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2541}
2542
2543/*****************************************************************************/
1956 2544
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2546
1959PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1960 2548
1961BOOT: 2549BOOT:
1962{ 2550{
1963#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2552# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2553 coro_thx = PERL_GET_CONTEXT;
1967# endif 2554# endif
1968#endif 2555#endif
1969 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
… …
1990 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
1991 2578
1992 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
1994 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
1995 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2595 coroapi.rev = CORO_API_REVISION;
2596
1997 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;
1998 2605
1999 { 2606 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2608
2002 if (!svp) croak ("Time::HiRes is required"); 2609 if (!svp) croak ("Time::HiRes is required");
… …
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2009} 2616}
2010 2617
2011SV * 2618SV *
2012new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
2013 CODE: 2622 CODE:
2014{ 2623{
2015 struct coro *coro; 2624 struct coro *coro;
2016 MAGIC *mg; 2625 MAGIC *mg;
2017 HV *hv; 2626 HV *hv;
2627 CV *cb;
2018 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (aTHX_ 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 }
2019 2643
2020 Newz (0, coro, 1, struct coro); 2644 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 2645 coro->args = newAV ();
2022 coro->flags = CF_NEW; 2646 coro->flags = CF_NEW;
2023 2647
… …
2028 coro->hv = hv = newHV (); 2652 coro->hv = hv = newHV ();
2029 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);
2030 mg->mg_flags |= MGf_DUP; 2654 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 2656
2657 if (items > 1)
2658 {
2033 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
2034 for (i = 1; i < items; i++) 2669 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2036} 2672}
2037 OUTPUT: 2673 OUTPUT:
2038 RETVAL 2674 RETVAL
2039 2675
2040void 2676void
2041_set_stacklevel (...) 2677transfer (...)
2042 ALIAS: 2678 PROTOTYPE: $$
2043 Coro::State::transfer = 1 2679 CODE:
2044 Coro::schedule = 2 2680 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 2681
2050bool 2682bool
2051_destroy (SV *coro_sv) 2683_destroy (SV *coro_sv)
2052 CODE: 2684 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2060 CODE: 2692 CODE:
2061 _exit (code); 2693 _exit (code);
2062 2694
2063int 2695int
2064cctx_stacksize (int new_stacksize = 0) 2696cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$
2065 CODE: 2698 CODE:
2066 RETVAL = cctx_stacksize; 2699 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 2700 if (new_stacksize)
2068 { 2701 {
2069 cctx_stacksize = new_stacksize; 2702 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 2705 OUTPUT:
2073 RETVAL 2706 RETVAL
2074 2707
2075int 2708int
2076cctx_max_idle (int max_idle = 0) 2709cctx_max_idle (int max_idle = 0)
2710 PROTOTYPE: ;$
2077 CODE: 2711 CODE:
2078 RETVAL = cctx_max_idle; 2712 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 2713 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 2714 cctx_max_idle = max_idle;
2081 OUTPUT: 2715 OUTPUT:
2082 RETVAL 2716 RETVAL
2083 2717
2084int 2718int
2085cctx_count () 2719cctx_count ()
2720 PROTOTYPE:
2086 CODE: 2721 CODE:
2087 RETVAL = cctx_count; 2722 RETVAL = cctx_count;
2088 OUTPUT: 2723 OUTPUT:
2089 RETVAL 2724 RETVAL
2090 2725
2091int 2726int
2092cctx_idle () 2727cctx_idle ()
2728 PROTOTYPE:
2093 CODE: 2729 CODE:
2094 RETVAL = cctx_idle; 2730 RETVAL = cctx_idle;
2095 OUTPUT: 2731 OUTPUT:
2096 RETVAL 2732 RETVAL
2097 2733
2098void 2734void
2099list () 2735list ()
2736 PROTOTYPE:
2100 PPCODE: 2737 PPCODE:
2101{ 2738{
2102 struct coro *coro; 2739 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 2740 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 2741 if (coro->hv)
… …
2166 2803
2167void 2804void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 2805throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 2806 PROTOTYPE: $;$
2170 CODE: 2807 CODE:
2808{
2809 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 2811 SvREFCNT_dec (*throwp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2813}
2173 2814
2174void 2815void
2175api_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
2176 2819
2177SV * 2820SV *
2178has_cctx (Coro::State coro) 2821has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 2822 PROTOTYPE: $
2180 CODE: 2823 CODE:
… …
2204 OUTPUT: 2847 OUTPUT:
2205 RETVAL 2848 RETVAL
2206 2849
2207void 2850void
2208force_cctx () 2851force_cctx ()
2852 PROTOTYPE:
2209 CODE: 2853 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 2854 SvSTATE_current->cctx->idle_sp = 0;
2212 2855
2213void 2856void
2214swap_defsv (Coro::State self) 2857swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 2858 PROTOTYPE: $
2216 ALIAS: 2859 ALIAS:
2217 swap_defav = 1 2860 swap_defav = 1
2218 CODE: 2861 CODE:
2219 if (!self->slot) 2862 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 2863 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 2864 else
2222 { 2865 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2866 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 2868
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 2869 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 2870 }
2228 2871
2872
2229MODULE = Coro::State PACKAGE = Coro 2873MODULE = Coro::State PACKAGE = Coro
2230 2874
2231BOOT: 2875BOOT:
2232{ 2876{
2233 int i; 2877 int i;
2234 2878
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 2882 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2240 SvREADONLY_on (coro_current); 2884 SvREADONLY_on (coro_current);
2241 2885
2242 coro_stash = gv_stashpv ("Coro", TRUE); 2886 coro_stash = gv_stashpv ("Coro", TRUE);
2243 2887
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
2257 coroapi.schedule = api_schedule; 2901 coroapi.schedule = api_schedule;
2258 coroapi.cede = api_cede; 2902 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 2903 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 2904 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 2905 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 2906 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 2907 coroapi.current = coro_current;
2264 2908
2265 GCoroAPI = &coroapi; 2909 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 2910 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 2911 SvREADONLY_on (sv);
2268 } 2912 }
2269} 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);
2270 2929
2271void 2930void
2272_set_current (SV *current) 2931_set_current (SV *current)
2273 PROTOTYPE: $ 2932 PROTOTYPE: $
2274 CODE: 2933 CODE:
… …
2277 2936
2278void 2937void
2279_set_readyhook (SV *hook) 2938_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 2939 PROTOTYPE: $
2281 CODE: 2940 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 2941 SvREFCNT_dec (coro_readyhook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 2943
2287int 2944int
2288prio (Coro::State coro, int newprio = 0) 2945prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$
2289 ALIAS: 2947 ALIAS:
2290 nice = 1 2948 nice = 1
2291 CODE: 2949 CODE:
2292{ 2950{
2293 RETVAL = coro->prio; 2951 RETVAL = coro->prio;
… …
2308 2966
2309SV * 2967SV *
2310ready (SV *self) 2968ready (SV *self)
2311 PROTOTYPE: $ 2969 PROTOTYPE: $
2312 CODE: 2970 CODE:
2313 RETVAL = boolSV (api_ready (self)); 2971 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 2972 OUTPUT:
2315 RETVAL 2973 RETVAL
2316 2974
2317int 2975int
2318nready (...) 2976nready (...)
… …
2325# for async_pool speedup 2983# for async_pool speedup
2326void 2984void
2327_pool_1 (SV *cb) 2985_pool_1 (SV *cb)
2328 CODE: 2986 CODE:
2329{ 2987{
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current); 2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2332 AV *defav = GvAV (PL_defgv); 2990 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av; 2992 AV *invoke_av;
2335 int i, len; 2993 int i, len;
2336 2994
… …
2357 { 3015 {
2358 av_fill (defav, len - 1); 3016 av_fill (defav, len - 1);
2359 for (i = 0; i < len; ++i) 3017 for (i = 0; i < len; ++i)
2360 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]));
2361 } 3019 }
2362
2363 SvREFCNT_dec (invoke);
2364} 3020}
2365 3021
2366void 3022void
2367_pool_2 (SV *cb) 3023_pool_2 (SV *cb)
2368 CODE: 3024 CODE:
2369{ 3025{
2370 struct coro *coro = SvSTATE (coro_current); 3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
2371 3028
2372 sv_setsv (cb, &PL_sv_undef); 3029 sv_setsv (cb, &PL_sv_undef);
2373 3030
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0; 3032 coro->saved_deffh = 0;
… …
2382 SvREFCNT_dec (old); 3039 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n"); 3040 croak ("\3async_pool terminate\2\n");
2384 } 3041 }
2385 3042
2386 av_clear (GvAV (PL_defgv)); 3043 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3044 hv_store (hv, "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389 3046
2390 coro->prio = 0; 3047 coro->prio = 0;
2391 3048
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0); 3050 api_trace (aTHX_ coro_current, 0);
2394 3051
2395 av_push (av_async_pool, newSVsv (coro_current)); 3052 av_push (av_async_pool, newSVsv (coro_current));
2396} 3053}
2397 3054
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV * 3055SV *
2409gensub (SV *sub, ...) 3056rouse_cb ()
2410 PROTOTYPE: &;@ 3057 PROTOTYPE:
2411 CODE: 3058 CODE:
2412{ 3059 RETVAL = coro_new_rouse_cb (aTHX);
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3060 OUTPUT:
2442 RETVAL 3061 RETVAL
2443 3062
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3063void
2450_get_state (SV *self) 3064rouse_wait (...)
3065 PROTOTYPE: ;$
2451 PPCODE: 3066 PPCODE:
2452{ 3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460 3068
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465 3069
2466 av_extend (av, AvFILLp (defav) + 1 + 1); 3070MODULE = Coro::State PACKAGE = PerlIO::cede
2467 3071
2468 for (i = 0; i <= AvFILLp (defav); ++i) 3072BOOT:
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2470 3074
2471 av_push (av, data_sv);
2472 3075
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3076MODULE = Coro::State PACKAGE = Coro::Semaphore
2474 3077
2475 api_ready (self); 3078SV *
2476} 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
2477 3102
2478void 3103void
2479_set_state (SV *state) 3104up (SV *self, int adjust = 1)
2480 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)
2481 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:
2482{ 3176{
2483 AV *av = (AV *)SvRV (state); 3177 AV *av = (AV *)SvRV (self);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3178 coro_signal_wake (aTHX_ av, AvFILLp (av));
2485 int i; 3179}
2486 3180
2487 errno = data->errorno; 3181void
2488 PL_laststype = data->laststype; 3182send (SV *self)
2489 PL_laststatval = data->laststatval; 3183 CODE:
2490 PL_statcache = data->statcache; 3184{
3185 AV *av = (AV *)SvRV (self);
2491 3186
2492 EXTEND (SP, AvFILLp (av)); 3187 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3188 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3189 else
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3191}
3192
3193IV
3194awaited (SV *self)
3195 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT:
3198 RETVAL
2496 3199
2497 3200
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3201MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3202
2500BOOT: 3203BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3205
2503SV * 3206void
2504_schedule (...) 3207_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3208 CODE:
2507{ 3209{
2508 static int incede; 3210 static int incede;
2509 3211
2510 api_cede_notself (); 3212 api_cede_notself (aTHX);
2511 3213
2512 ++incede; 3214 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3215 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3216 ;
2515 3217
2516 sv_setsv (sv_activity, &PL_sv_undef); 3218 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3219 if (coro_nready >= incede)
2518 { 3220 {
2519 PUSHMARK (SP); 3221 PUSHMARK (SP);
2520 PUTBACK; 3222 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3224 }
2524 3225
2525 --incede; 3226 --incede;
2526} 3227}
2527 3228
2528 3229
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3230MODULE = Coro::State PACKAGE = Coro::AIO
2530 3231
2531BOOT: 3232void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3233_register (char *target, char *proto, SV *req)
3234 CODE:
3235{
3236 CV *req_cv = coro_sv_2cv (aTHX_ 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}
2533 3242

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