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Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs.
Revision 1.309 by root, Wed Nov 19 15:29:57 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;
170static CV *coro_run_cv;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 171static 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};
189 172
190static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 175static SV *rv_diehook;
193static SV *rv_warnhook; 176static SV *rv_warnhook;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 197};
215 198
216/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 200typedef struct coro_cctx
201{
218 struct coro_cctx *next; 202 struct coro_cctx *next;
219 203
220 /* the stack */ 204 /* the stack */
221 void *sptr; 205 void *sptr;
222 size_t ssize; 206 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 226};
243 227
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 229typedef struct
230{
246 SV *defsv; 231 SV *defsv;
247 AV *defav; 232 AV *defav;
248 SV *errsv; 233 SV *errsv;
249 SV *irsgv; 234 SV *irsgv;
250#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
254 239
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 241
257/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
258struct coro { 243struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 245 coro_cctx *cctx;
261 246
262 /* process data */ 247 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 249 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
265 251
252 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 253 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 254 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 255 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 256 HV *hv; /* the perl hash associated with this coro, if any */
257 void (*on_destroy)(pTHX_ struct coro *coro);
270 258
271 /* statistics */ 259 /* statistics */
272 int usecount; /* number of transfers to this coro */ 260 int usecount; /* number of transfers to this coro */
273 261
274 /* coro process data */ 262 /* coro process data */
275 int prio; 263 int prio;
276 SV *throw; /* exception to be thrown */ 264 SV *except; /* exception to be thrown */
265 SV *rouse_cb;
277 266
278 /* async_pool */ 267 /* async_pool */
279 SV *saved_deffh; 268 SV *saved_deffh;
280 269
281 /* linked list */ 270 /* linked list */
282 struct coro *next, *prev; 271 struct coro *next, *prev;
283}; 272};
284 273
285typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the mainr easonw e don't support windows process emulation */
280static struct CoroSLF slf_frame; /* the current slf frame */
287 281
288/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
289 283
290#define PRIO_MAX 3 284#define PRIO_MAX 3
291#define PRIO_HIGH 1 285#define PRIO_HIGH 1
… …
296 290
297/* for Coro.pm */ 291/* for Coro.pm */
298static SV *coro_current; 292static SV *coro_current;
299static SV *coro_readyhook; 293static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready;
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 (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 somtimes 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
1672INLINE void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{
1675 SV *prev = SvRV (coro_current);
1676
1677 if (coro_nready)
1678 {
1679 prepare_schedule (aTHX_ ta);
1680 api_ready (aTHX_ prev);
1681 }
1682 else
1683 prepare_nop (aTHX_ ta);
1684}
1685
1686static void
1687api_schedule (pTHX)
1688{
1689 struct coro_transfer_args ta;
1690
1691 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1);
1693}
1694
1660static int 1695static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1696api_cede (pTHX)
1662{ 1697{
1663 if (coro_nready) 1698 struct coro_transfer_args ta;
1664 { 1699
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 1700 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 1701
1702 if (expect_true (ta.prev != ta.next))
1703 {
1704 TRANSFER (ta, 1);
1668 return 1; 1705 return 1;
1669 } 1706 }
1670 else 1707 else
1671 return 0; 1708 return 0;
1672} 1709}
1673 1710
1674static void
1675api_schedule (void)
1676{
1677 dTHX;
1678 struct transfer_args ta;
1679
1680 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1);
1682}
1683
1684static int 1711static int
1685api_cede (void) 1712api_cede_notself (pTHX)
1686{ 1713{
1687 dTHX; 1714 if (coro_nready)
1715 {
1688 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1689 1717
1690 prepare_cede (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 1719 TRANSFER (ta, 1);
1695 return 1; 1720 return 1;
1696 } 1721 }
1697 else 1722 else
1698 return 0; 1723 return 0;
1699} 1724}
1700 1725
1701static int 1726static void
1702api_cede_notself (void)
1703{
1704 dTHX;
1705 struct transfer_args ta;
1706
1707 if (prepare_cede_notself (aTHX_ &ta))
1708 {
1709 TRANSFER (ta, 1);
1710 return 1;
1711 }
1712 else
1713 return 0;
1714}
1715
1716static void
1717api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 1728{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1721 1730
1722 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1723 { 1732 {
1724 if (!coro->cctx) 1733 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 1734 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1728 1737
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 1739 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 1741 {
… …
1737 else 1746 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 1748 }
1740} 1749}
1741 1750
1742#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
1743static int 1781static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1745{ 1783{
1746 AV *padlist; 1784 SV *data = (SV *)frame->data;
1747 AV *av = (AV *)mg->mg_obj; 1785
1786 if (CORO_THROW)
1787 return 0;
1748 1788
1749 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 }
1750 1808
1751 return 0; 1809 return 0;
1752} 1810}
1753 1811
1754static MGVTBL coro_gensub_vtbl = { 1812static void
1755 0, 0, 0, 0, 1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 1814{
1757}; 1815 SV *cb;
1758#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}
1759 2075
1760/*****************************************************************************/ 2076/*****************************************************************************/
1761/* PerlIO::cede */ 2077/* PerlIO::cede */
1762 2078
1763typedef struct 2079typedef struct
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 2108 double now = nvtime ();
1793 2109
1794 if (now >= self->next) 2110 if (now >= self->next)
1795 { 2111 {
1796 api_cede (); 2112 api_cede (aTHX);
1797 self->next = now + self->every; 2113 self->next = now + self->every;
1798 } 2114 }
1799 2115
1800 return PerlIOBuf_flush (aTHX_ f); 2116 return PerlIOBuf_flush (aTHX_ f);
1801} 2117}
… …
1831 PerlIOBuf_get_cnt, 2147 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 2148 PerlIOBuf_set_ptrcnt,
1833}; 2149};
1834 2150
1835/*****************************************************************************/ 2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
1836 2153
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP * 2154static SV *
1847pp_restore (pTHX) 2155coro_waitarray_new (pTHX_ int count)
1848{ 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 {
1849 dSP; 2460 dSP;
2461 int i;
1850 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
1851 PUSHMARK (SP); 2511 PUSHMARK (SP);
1852 2512
1853 EXTEND (SP, 3); 2513 /* first push all args to the stack */
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2514 EXTEND (SP, items + 1);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 2515
1858 RETURNOP (ssl_restore.op_first); 2516 for (i = 0; i < items; ++i)
1859} 2517 PUSHs (arg [i]);
1860 2518
1861/* declare prototype */ 2519 /* now push the callback closure */
1862XS(XS_Coro__State__set_stacklevel); 2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2521
1864#define OPpENTERSUB_SSL 15 2522 /* now call the AIO function - we assume our request is uncancelable */
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK; 2523 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 } 2525 }
1918 2526
1919 TRANSFER (ta, 0); 2527 /* now that the requets is going, we loop toll we have a result */
1920 SPAGAIN; 2528 frame->data = (void *)state;
1921 2529 frame->prepare = prepare_schedule;
1922skip: 2530 frame->check = slf_check_aio_req;
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 2531}
2532
2533static void
2534coro_aio_req_xs (pTHX_ CV *cv)
2535{
2536 dXSARGS;
2537
2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2539
2540 XSRETURN_EMPTY;
2541}
2542
2543/*****************************************************************************/
1928 2544
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 2546
1931PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1932 2548
1933# these not obviously related functions are all rolled into the same xs
1934# function to increase chances that they all will call transfer with the same
1935# stack offset
1936void
1937_set_stacklevel (...)
1938 ALIAS:
1939 Coro::State::transfer = 1
1940 Coro::schedule = 2
1941 Coro::cede = 3
1942 Coro::cede_notself = 4
1943 CODE:
1944{
1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT: 2549BOOT:
1967{ 2550{
1968#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 2552# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 2553 coro_thx = PERL_GET_CONTEXT;
1972# endif 2554# endif
1973#endif 2555#endif
1974 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
… …
1995 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
1996 2578
1997 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
1999 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
2000 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION; 2595 coroapi.rev = CORO_API_REVISION;
2596
2002 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;
2003 2605
2004 { 2606 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006 2608
2007 if (!svp) croak ("Time::HiRes is required"); 2609 if (!svp) croak ("Time::HiRes is required");
… …
2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2014} 2616}
2015 2617
2016SV * 2618SV *
2017new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
2018 CODE: 2622 CODE:
2019{ 2623{
2020 struct coro *coro; 2624 struct coro *coro;
2021 MAGIC *mg; 2625 MAGIC *mg;
2022 HV *hv; 2626 HV *hv;
2627 CV *cb;
2023 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (ST (1));
2633
2634 if (CvISXSUB (cb))
2635 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2636
2637 if (!CvROOT (cb))
2638 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2639 }
2024 2640
2025 Newz (0, coro, 1, struct coro); 2641 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV (); 2642 coro->args = newAV ();
2027 coro->flags = CF_NEW; 2643 coro->flags = CF_NEW;
2028 2644
… …
2033 coro->hv = hv = newHV (); 2649 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2650 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP; 2651 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2652 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037 2653
2654 if (items > 1)
2655 {
2038 av_extend (coro->args, items - 1); 2656 av_extend (coro->args, items - 1 + ix);
2657
2658 if (ix)
2659 {
2660 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2661 cb = coro_run_cv;
2662 }
2663
2664 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2665
2039 for (i = 1; i < items; i++) 2666 for (i = 2; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i))); 2667 av_push (coro->args, newSVsv (ST (i)));
2668 }
2041} 2669}
2042 OUTPUT: 2670 OUTPUT:
2043 RETVAL 2671 RETVAL
2672
2673void
2674transfer (...)
2675 PROTOTYPE: $$
2676 CODE:
2677 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2044 2678
2045bool 2679bool
2046_destroy (SV *coro_sv) 2680_destroy (SV *coro_sv)
2047 CODE: 2681 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2682 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2055 CODE: 2689 CODE:
2056 _exit (code); 2690 _exit (code);
2057 2691
2058int 2692int
2059cctx_stacksize (int new_stacksize = 0) 2693cctx_stacksize (int new_stacksize = 0)
2694 PROTOTYPE: ;$
2060 CODE: 2695 CODE:
2061 RETVAL = cctx_stacksize; 2696 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 2697 if (new_stacksize)
2063 { 2698 {
2064 cctx_stacksize = new_stacksize; 2699 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 2702 OUTPUT:
2068 RETVAL 2703 RETVAL
2069 2704
2070int 2705int
2071cctx_max_idle (int max_idle = 0) 2706cctx_max_idle (int max_idle = 0)
2707 PROTOTYPE: ;$
2072 CODE: 2708 CODE:
2073 RETVAL = cctx_max_idle; 2709 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 2710 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 2711 cctx_max_idle = max_idle;
2076 OUTPUT: 2712 OUTPUT:
2077 RETVAL 2713 RETVAL
2078 2714
2079int 2715int
2080cctx_count () 2716cctx_count ()
2717 PROTOTYPE:
2081 CODE: 2718 CODE:
2082 RETVAL = cctx_count; 2719 RETVAL = cctx_count;
2083 OUTPUT: 2720 OUTPUT:
2084 RETVAL 2721 RETVAL
2085 2722
2086int 2723int
2087cctx_idle () 2724cctx_idle ()
2725 PROTOTYPE:
2088 CODE: 2726 CODE:
2089 RETVAL = cctx_idle; 2727 RETVAL = cctx_idle;
2090 OUTPUT: 2728 OUTPUT:
2091 RETVAL 2729 RETVAL
2092 2730
2093void 2731void
2094list () 2732list ()
2733 PROTOTYPE:
2095 PPCODE: 2734 PPCODE:
2096{ 2735{
2097 struct coro *coro; 2736 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 2737 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 2738 if (coro->hv)
… …
2161 2800
2162void 2801void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 2802throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$ 2803 PROTOTYPE: $;$
2165 CODE: 2804 CODE:
2805{
2806 struct coro *current = SvSTATE_current;
2807 SV **throwp = self == current ? &CORO_THROW : &self->except;
2166 SvREFCNT_dec (self->throw); 2808 SvREFCNT_dec (*throwp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2809 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2810}
2168 2811
2169void 2812void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2814 PROTOTYPE: $;$
2815 C_ARGS: aTHX_ coro, flags
2171 2816
2172SV * 2817SV *
2173has_cctx (Coro::State coro) 2818has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 2819 PROTOTYPE: $
2175 CODE: 2820 CODE:
… …
2199 OUTPUT: 2844 OUTPUT:
2200 RETVAL 2845 RETVAL
2201 2846
2202void 2847void
2203force_cctx () 2848force_cctx ()
2849 PROTOTYPE:
2204 CODE: 2850 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 2851 SvSTATE_current->cctx->idle_sp = 0;
2207 2852
2208void 2853void
2209swap_defsv (Coro::State self) 2854swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 2855 PROTOTYPE: $
2211 ALIAS: 2856 ALIAS:
2212 swap_defav = 1 2857 swap_defav = 1
2213 CODE: 2858 CODE:
2214 if (!self->slot) 2859 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 2860 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 2861 else
2217 { 2862 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2863 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2864 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 2865
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 2866 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 2867 }
2223 2868
2869
2224MODULE = Coro::State PACKAGE = Coro 2870MODULE = Coro::State PACKAGE = Coro
2225 2871
2226BOOT: 2872BOOT:
2227{ 2873{
2228 int i; 2874 int i;
2229 2875
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2876 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2877 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2878 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 2879 coro_run_cv = get_cv (aTHX_ "Coro::_terminate", GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2880 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2235 SvREADONLY_on (coro_current); 2881 SvREADONLY_on (coro_current);
2236 2882
2237 coro_stash = gv_stashpv ("Coro", TRUE); 2883 coro_stash = gv_stashpv ("Coro", TRUE);
2238 2884
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2885 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
2252 coroapi.schedule = api_schedule; 2898 coroapi.schedule = api_schedule;
2253 coroapi.cede = api_cede; 2899 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 2900 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 2901 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 2902 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 2903 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 2904 coroapi.current = coro_current;
2259 2905
2260 GCoroAPI = &coroapi; 2906 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 2907 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv); 2908 SvREADONLY_on (sv);
2263 } 2909 }
2264} 2910}
2911
2912void
2913schedule (...)
2914 CODE:
2915 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2916
2917void
2918cede (...)
2919 CODE:
2920 CORO_EXECUTE_SLF_XS (slf_init_cede);
2921
2922void
2923cede_notself (...)
2924 CODE:
2925 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2265 2926
2266void 2927void
2267_set_current (SV *current) 2928_set_current (SV *current)
2268 PROTOTYPE: $ 2929 PROTOTYPE: $
2269 CODE: 2930 CODE:
… …
2272 2933
2273void 2934void
2274_set_readyhook (SV *hook) 2935_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 2936 PROTOTYPE: $
2276 CODE: 2937 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 2938 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2939 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281 2940
2282int 2941int
2283prio (Coro::State coro, int newprio = 0) 2942prio (Coro::State coro, int newprio = 0)
2943 PROTOTYPE: $;$
2284 ALIAS: 2944 ALIAS:
2285 nice = 1 2945 nice = 1
2286 CODE: 2946 CODE:
2287{ 2947{
2288 RETVAL = coro->prio; 2948 RETVAL = coro->prio;
… …
2303 2963
2304SV * 2964SV *
2305ready (SV *self) 2965ready (SV *self)
2306 PROTOTYPE: $ 2966 PROTOTYPE: $
2307 CODE: 2967 CODE:
2308 RETVAL = boolSV (api_ready (self)); 2968 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 2969 OUTPUT:
2310 RETVAL 2970 RETVAL
2311 2971
2312int 2972int
2313nready (...) 2973nready (...)
… …
2320# for async_pool speedup 2980# for async_pool speedup
2321void 2981void
2322_pool_1 (SV *cb) 2982_pool_1 (SV *cb)
2323 CODE: 2983 CODE:
2324{ 2984{
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current); 2985 HV *hv = (HV *)SvRV (coro_current);
2986 struct coro *coro = SvSTATE_hv ((SV *)hv);
2327 AV *defav = GvAV (PL_defgv); 2987 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2988 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av; 2989 AV *invoke_av;
2330 int i, len; 2990 int i, len;
2331 2991
… …
2352 { 3012 {
2353 av_fill (defav, len - 1); 3013 av_fill (defav, len - 1);
2354 for (i = 0; i < len; ++i) 3014 for (i = 0; i < len; ++i)
2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3015 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2356 } 3016 }
2357
2358 SvREFCNT_dec (invoke);
2359} 3017}
2360 3018
2361void 3019void
2362_pool_2 (SV *cb) 3020_pool_2 (SV *cb)
2363 CODE: 3021 CODE:
2364{ 3022{
2365 struct coro *coro = SvSTATE (coro_current); 3023 HV *hv = (HV *)SvRV (coro_current);
3024 struct coro *coro = SvSTATE_hv ((SV *)hv);
2366 3025
2367 sv_setsv (cb, &PL_sv_undef); 3026 sv_setsv (cb, &PL_sv_undef);
2368 3027
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3028 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0; 3029 coro->saved_deffh = 0;
… …
2377 SvREFCNT_dec (old); 3036 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n"); 3037 croak ("\3async_pool terminate\2\n");
2379 } 3038 }
2380 3039
2381 av_clear (GvAV (PL_defgv)); 3040 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3041 hv_store (hv, "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3042 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384 3043
2385 coro->prio = 0; 3044 coro->prio = 0;
2386 3045
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3046 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0); 3047 api_trace (aTHX_ coro_current, 0);
2389 3048
2390 av_push (av_async_pool, newSVsv (coro_current)); 3049 av_push (av_async_pool, newSVsv (coro_current));
2391} 3050}
2392 3051
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV * 3052SV *
2404gensub (SV *sub, ...) 3053rouse_cb ()
2405 PROTOTYPE: &;@ 3054 PROTOTYPE:
2406 CODE: 3055 CODE:
2407{ 3056 RETVAL = coro_new_rouse_cb (aTHX);
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT: 3057 OUTPUT:
2437 RETVAL 3058 RETVAL
2438 3059
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 3060void
2445_get_state (SV *self) 3061rouse_wait (...)
3062 PROTOTYPE: ;$
2446 PPCODE: 3063 PPCODE:
2447{ 3064 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2448 AV *defav = GvAV (PL_defgv);
2449 AV *av = newAV ();
2450 int i;
2451 SV *data_sv = newSV (sizeof (struct io_state));
2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2453 SvCUR_set (data_sv, sizeof (struct io_state));
2454 SvPOK_only (data_sv);
2455 3065
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460 3066
2461 av_extend (av, AvFILLp (defav) + 1 + 1); 3067MODULE = Coro::State PACKAGE = PerlIO::cede
2462 3068
2463 for (i = 0; i <= AvFILLp (defav); ++i) 3069BOOT:
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3070 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2465 3071
2466 av_push (av, data_sv);
2467 3072
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3073MODULE = Coro::State PACKAGE = Coro::Semaphore
2469 3074
2470 api_ready (self); 3075SV *
2471} 3076new (SV *klass, SV *count = 0)
3077 CODE:
3078 RETVAL = sv_bless (
3079 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3080 GvSTASH (CvGV (cv))
3081 );
3082 OUTPUT:
3083 RETVAL
3084
3085# helper for Coro::Channel
3086SV *
3087_alloc (int count)
3088 CODE:
3089 RETVAL = coro_waitarray_new (aTHX_ count);
3090 OUTPUT:
3091 RETVAL
3092
3093SV *
3094count (SV *self)
3095 CODE:
3096 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3097 OUTPUT:
3098 RETVAL
2472 3099
2473void 3100void
2474_set_state (SV *state) 3101up (SV *self, int adjust = 1)
2475 PROTOTYPE: $ 3102 ALIAS:
3103 adjust = 1
3104 CODE:
3105 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3106
3107void
3108down (...)
3109 CODE:
3110 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3111
3112void
3113wait (...)
3114 CODE:
3115 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3116
3117void
3118try (SV *self)
3119 PPCODE:
3120{
3121 AV *av = (AV *)SvRV (self);
3122 SV *count_sv = AvARRAY (av)[0];
3123 IV count = SvIVX (count_sv);
3124
3125 if (count > 0)
3126 {
3127 --count;
3128 SvIVX (count_sv) = count;
3129 XSRETURN_YES;
3130 }
3131 else
3132 XSRETURN_NO;
3133}
3134
3135void
3136waiters (SV *self)
3137 PPCODE:
3138{
3139 AV *av = (AV *)SvRV (self);
3140 int wcount = AvFILLp (av) + 1 - 1;
3141
3142 if (GIMME_V == G_SCALAR)
3143 XPUSHs (sv_2mortal (newSViv (wcount)));
3144 else
3145 {
3146 int i;
3147 EXTEND (SP, wcount);
3148 for (i = 1; i <= wcount; ++i)
3149 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3150 }
3151}
3152
3153MODULE = Coro::State PACKAGE = Coro::Signal
3154
3155SV *
3156new (SV *klass)
2476 PPCODE: 3157 CODE:
3158 RETVAL = sv_bless (
3159 coro_waitarray_new (aTHX_ 0),
3160 GvSTASH (CvGV (cv))
3161 );
3162 OUTPUT:
3163 RETVAL
3164
3165void
3166wait (...)
3167 CODE:
3168 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3169
3170void
3171broadcast (SV *self)
3172 CODE:
2477{ 3173{
2478 AV *av = (AV *)SvRV (state); 3174 AV *av = (AV *)SvRV (self);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3175 coro_signal_wake (aTHX_ av, AvFILLp (av));
2480 int i; 3176}
2481 3177
2482 errno = data->errorno; 3178void
2483 PL_laststype = data->laststype; 3179send (SV *self)
2484 PL_laststatval = data->laststatval; 3180 CODE:
2485 PL_statcache = data->statcache; 3181{
3182 AV *av = (AV *)SvRV (self);
2486 3183
2487 EXTEND (SP, AvFILLp (av)); 3184 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 3185 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3186 else
3187 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 3188}
3189
3190IV
3191awaited (SV *self)
3192 CODE:
3193 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3194 OUTPUT:
3195 RETVAL
2491 3196
2492 3197
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 3198MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 3199
2495BOOT: 3200BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3201 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 3202
2498SV * 3203void
2499_schedule (...) 3204_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 3205 CODE:
2502{ 3206{
2503 static int incede; 3207 static int incede;
2504 3208
2505 api_cede_notself (); 3209 api_cede_notself (aTHX);
2506 3210
2507 ++incede; 3211 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 3212 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 3213 ;
2510 3214
2511 sv_setsv (sv_activity, &PL_sv_undef); 3215 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 3216 if (coro_nready >= incede)
2513 { 3217 {
2514 PUSHMARK (SP); 3218 PUSHMARK (SP);
2515 PUTBACK; 3219 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3220 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 3221 }
2519 3222
2520 --incede; 3223 --incede;
2521} 3224}
2522 3225
2523 3226
2524MODULE = Coro::State PACKAGE = PerlIO::cede 3227MODULE = Coro::State PACKAGE = Coro::AIO
2525 3228
2526BOOT: 3229void
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3230_register (char *target, char *proto, SV *req)
3231 CODE:
3232{
3233 CV *req_cv = coro_sv_2cv (req);
3234 /* newXSproto doesn't return the CV on 5.8 */
3235 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3236 sv_setpv ((SV *)slf_cv, proto);
3237 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3238}
2528 3239

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