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Comparing Coro/Coro/State.xs (file contents):
Revision 1.268 by root, Fri Nov 14 06:41:41 2008 UTC vs.
Revision 1.308 by root, Wed Nov 19 15:09:57 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
… …
117#endif 120#endif
118 121
119/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 123 * portable way as possible. */
121#if __GNUC__ >= 4 124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 126# define STACKLEVEL __builtin_frame_address (0)
123#else 127#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel)
125#endif 130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 157
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192 171
193static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 174static SV *rv_diehook;
196static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 196};
218 197
219/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 199typedef struct coro_cctx
200{
221 struct coro_cctx *next; 201 struct coro_cctx *next;
222 202
223 /* the stack */ 203 /* the stack */
224 void *sptr; 204 void *sptr;
225 size_t ssize; 205 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 225};
246 226
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 228typedef struct
229{
249 SV *defsv; 230 SV *defsv;
250 AV *defav; 231 AV *defav;
251 SV *errsv; 232 SV *errsv;
252 SV *irsgv; 233 SV *irsgv;
253#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
257 238
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 240
260/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
261struct coro { 242struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 244 coro_cctx *cctx;
264 245
265 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 248 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
268 250
251 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
273 257
274 /* statistics */ 258 /* statistics */
275 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
276 260
277 /* coro process data */ 261 /* coro process data */
278 int prio; 262 int prio;
279 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
280 265
281 /* async_pool */ 266 /* async_pool */
282 SV *saved_deffh; 267 SV *saved_deffh;
283 268
284 /* linked list */ 269 /* linked list */
285 struct coro *next, *prev; 270 struct coro *next, *prev;
286}; 271};
287 272
288typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */
290 280
291/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
292 282
293#define PRIO_MAX 3 283#define PRIO_MAX 3
294#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
299 289
300/* for Coro.pm */ 290/* for Coro.pm */
301static SV *coro_current; 291static SV *coro_current;
302static SV *coro_readyhook; 292static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready;
305static struct coro *coro_first; 294static struct coro *coro_first;
295#define coro_nready coroapi.nready
306 296
307/** lowlevel stuff **********************************************************/ 297/** lowlevel stuff **********************************************************/
308 298
309static SV * 299static SV *
310coro_get_sv (pTHX_ const char *name, int create) 300coro_get_sv (pTHX_ const char *name, int create)
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 324 get_hv (name, create);
335#endif 325#endif
336 return get_hv (name, create); 326 return get_hv (name, create);
327}
328
329/* may croak */
330INLINE CV *
331coro_sv_2cv (SV *sv)
332{
333 HV *st;
334 GV *gvp;
335 return sv_2cv (sv, &st, &gvp, 0);
337} 336}
338 337
339static AV * 338static AV *
340coro_clone_padlist (pTHX_ CV *cv) 339coro_clone_padlist (pTHX_ CV *cv)
341{ 340{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 395
397 return 0; 396 return 0;
398} 397}
399 398
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 399#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 400#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 401
403static MGVTBL coro_cv_vtbl = { 402static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 403 0, 0, 0, 0,
405 coro_cv_free 404 coro_cv_free
406}; 405};
407 406
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
408#define CORO_MAGIC(sv, type) \ 412#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 413 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 414 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 415 : 0)
414 416
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 419
418INLINE struct coro * 420INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 421SvSTATE_ (pTHX_ SV *coro)
420{ 422{
421 HV *stash; 423 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 440 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 441 return (struct coro *)mg->mg_ptr;
440} 442}
441 443
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 449
444/* the next two functions merely cache the padlists */ 450/* the next two functions merely cache the padlists */
445static void 451static void
446get_padlist (pTHX_ CV *cv) 452get_padlist (pTHX_ CV *cv)
447{ 453{
… …
453 else 459 else
454 { 460 {
455#if CORO_PREFER_PERL_FUNCTIONS 461#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 462 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 463 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 464 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 465 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 466 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 467 SvREFCNT_dec (cp);
462#else 468#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
514 CvPADLIST (cv) = (AV *)POPs; 520 CvPADLIST (cv) = (AV *)POPs;
515 } 521 }
516 522
517 PUTBACK; 523 PUTBACK;
518 } 524 }
525
526 slf_frame = c->slf_frame;
527 CORO_THROW = c->except;
519} 528}
520 529
521static void 530static void
522save_perl (pTHX_ Coro__State c) 531save_perl (pTHX_ Coro__State c)
523{ 532{
533 c->except = CORO_THROW;
534 c->slf_frame = slf_frame;
535
524 { 536 {
525 dSP; 537 dSP;
526 I32 cxix = cxstack_ix; 538 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 539 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 540 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 607 #undef VAR
596 } 608 }
597} 609}
598 610
599/* 611/*
600 * allocate various perl stacks. This is an exact copy 612 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 613 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 614 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 615 * not usually need a lot of stackspace.
604 */ 616 */
605#if CORO_PREFER_PERL_FUNCTIONS 617#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 618# define coro_init_stacks(thx) init_stacks ()
607#else 619#else
608static void 620static void
609coro_init_stacks (pTHX) 621coro_init_stacks (pTHX)
610{ 622{
611 PL_curstackinfo = new_stackinfo(32, 8); 623 PL_curstackinfo = new_stackinfo(32, 8);
… …
712#endif 724#endif
713 } 725 }
714 } 726 }
715 727
716 return rss; 728 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_set_stacklevel calling us */
722#define SSL_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
724#define SSL_TAIL set_stacklevel_tail (aTHX)
725
726INLINE void
727set_stacklevel_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 729}
745 730
746/** coroutine stack handling ************************************************/ 731/** coroutine stack handling ************************************************/
747 732
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 733static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 819
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 821}
837 822
838static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
840{ 840{
841 /* 841 /*
842 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
843 */ 843 */
… …
870 { 870 {
871 dSP; 871 dSP;
872 UNOP myop; 872 UNOP myop;
873 873
874 Zero (&myop, 1, UNOP); 874 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
877 878
878 PUSHMARK (SP); 879 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 881 PUTBACK;
881 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 884 }
885 885
886 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 888 */
890 SSL_HEAD; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
891} 902}
892 903
893static void 904static void
894coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
895{ 906{
… …
919 930
920 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
922 933
923 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
925 936
926 coro_destruct_stacks (aTHX); 937 coro_destruct_stacks (aTHX);
927} 938}
928 939
929INLINE void 940INLINE void
… …
939static int 950static int
940runops_trace (pTHX) 951runops_trace (pTHX)
941{ 952{
942 COP *oldcop = 0; 953 COP *oldcop = 0;
943 int oldcxix = -2; 954 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 955 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx; 956 coro_cctx *cctx = coro->cctx;
946 957
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 958 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 959 {
949 PERL_ASYNC_CHECK (); 960 PERL_ASYNC_CHECK ();
… …
1016 SAVETMPS; 1027 SAVETMPS;
1017 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1029 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1030 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1031 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1032 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1033 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1034 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1035 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1036 SPAGAIN;
1026 FREETMPS; 1037 FREETMPS;
… …
1058 1069
1059 TAINT_NOT; 1070 TAINT_NOT;
1060 return 0; 1071 return 0;
1061} 1072}
1062 1073
1074static struct coro_cctx *cctx_ssl_cctx;
1075static struct CoroSLF cctx_ssl_frame;
1076
1063static void 1077static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1078slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1079{
1066 ta->prev = (struct coro *)cctx; 1080 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1081 ta->next = 0;
1068} 1082}
1069 1083
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1084static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1085slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1086{
1073/* also initialises PL_top_env */ 1087 *frame = cctx_ssl_frame;
1088
1089 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1090}
1091
1092/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1093static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1094cctx_prepare (pTHX_ coro_cctx *cctx)
1076{ 1095{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1096 PL_top_env = &PL_start_env;
1081 1097
1082 if (cctx->flags & CC_TRACE) 1098 if (cctx->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1099 PL_runops = runops_trace;
1084 1100
1085 Zero (&myop, 1, UNOP); 1101 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1102 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1103 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1104 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1105
1089 PUSHMARK (SP); 1106 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1107 cctx_ssl_cctx = cctx;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1108 cctx_ssl_frame = slf_frame;
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1109
1093 PUTBACK; 1110 slf_frame.prepare = slf_prepare_set_stacklevel;
1094 PL_op = (OP *)&myop; 1111 slf_frame.check = slf_check_set_stacklevel;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1112}
1098 1113
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1114/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1115INLINE void
1101transfer_tail (pTHX) 1116transfer_tail (pTHX)
1102{ 1117{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1118 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1119}
1119 1120
1120/* 1121/*
1121 * this is a _very_ stripped down perl interpreter ;) 1122 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1123 */
… …
1129# endif 1130# endif
1130#endif 1131#endif
1131 { 1132 {
1132 dTHX; 1133 dTHX;
1133 1134
1134 /* we are the alternative tail to pp_set_stacklevel */ 1135 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1136 /* not doing so will re-execute it, which is exactly what we want */
1136 SSL_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1137 /* PL_nop = PL_nop->op_next */
1140 1138
1141 /* inject a fake subroutine call to cctx_init */ 1139 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1140 cctx_prepare (aTHX_ (coro_cctx *)arg);
1143 1141
1144 /* cctx_run is the alternative tail of transfer() */ 1142 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1143 transfer_tail (aTHX);
1146 1144
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1145 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1146 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1147 perl_run (PL_curinterp);
1148 /*
1149 * Unfortunately, there is no way to get at the return values of the
1150 * coro body here, as perl_run destroys these
1151 */
1150 1152
1151 /* 1153 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1154 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1155 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1156 * reason for perl_run to return. We try to exit by jumping to the
… …
1305/** coroutine switching *****************************************************/ 1307/** coroutine switching *****************************************************/
1306 1308
1307static void 1309static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1310transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1311{
1312 /* TODO: throwing up here is considered harmful */
1313
1310 if (expect_true (prev != next)) 1314 if (expect_true (prev != next))
1311 { 1315 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1316 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1317 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1318
1315 if (expect_false (next->flags & CF_RUNNING)) 1319 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1320 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1321
1318 if (expect_false (next->flags & CF_DESTROYED)) 1322 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1323 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1324
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1325#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1326 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1327 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1328#endif
1325 } 1329 }
1326} 1330}
1327 1331
1328/* always use the TRANSFER macro */ 1332/* always use the TRANSFER macro */
1329static void NOINLINE 1333static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1334transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1335{
1332 dSTACKLEVEL; 1336 dSTACKLEVEL;
1333 1337
1334 /* sometimes transfer is only called to set idle_sp */ 1338 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1339 if (expect_false (!next))
1336 { 1340 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1341 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1342 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1343 }
1340 else if (expect_true (prev != next)) 1344 else if (expect_true (prev != next))
1341 { 1345 {
1342 coro_cctx *prev__cctx; 1346 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1353 prev->flags |= CF_RUNNING;
1350 } 1354 }
1351 1355
1352 prev->flags &= ~CF_RUNNING; 1356 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1357 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1358
1357 /* first get rid of the old state */ 1359 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1360 save_perl (aTHX_ prev);
1359 1361
1360 if (expect_false (next->flags & CF_NEW)) 1362 if (expect_false (next->flags & CF_NEW))
… …
1369 1371
1370 prev__cctx = prev->cctx; 1372 prev__cctx = prev->cctx;
1371 1373
1372 /* possibly untie and reuse the cctx */ 1374 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1375 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1376 prev__cctx->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1377 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1378 && !force_cctx
1377 )) 1379 ))
1378 { 1380 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1381 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1395 ++next->usecount;
1394 1396
1395 if (expect_true (!next->cctx)) 1397 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1398 next->cctx = cctx_get (aTHX);
1397 1399
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
1401 if (expect_false (prev__cctx != next->cctx)) 1400 if (expect_false (prev__cctx != next->cctx))
1402 { 1401 {
1403 prev__cctx->top_env = PL_top_env; 1402 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1403 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1404 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1417coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1418{
1420 if (coro->flags & CF_DESTROYED) 1419 if (coro->flags & CF_DESTROYED)
1421 return 0; 1420 return 0;
1422 1421
1422 if (coro->on_destroy)
1423 coro->on_destroy (aTHX_ coro);
1424
1423 coro->flags |= CF_DESTROYED; 1425 coro->flags |= CF_DESTROYED;
1424 1426
1425 if (coro->flags & CF_READY) 1427 if (coro->flags & CF_READY)
1426 { 1428 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1429 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1430 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1431 --coro_nready;
1431 UNLOCK;
1432 } 1432 }
1433 else 1433 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1435
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1436 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1437 {
1438 struct coro temp; 1438 struct coro temp;
1439 1439
1440 if (coro->flags & CF_RUNNING) 1440 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1441
1443 save_perl (aTHX_ &temp); 1442 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1443 load_perl (aTHX_ coro);
1445 1444
1446 coro_destruct (aTHX_ coro); 1445 coro_destruct (aTHX_ coro);
… …
1449 1448
1450 coro->slot = 0; 1449 coro->slot = 0;
1451 } 1450 }
1452 1451
1453 cctx_destroy (coro->cctx); 1452 cctx_destroy (coro->cctx);
1453 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
1455 SvREFCNT_dec (CORO_THROW);
1455 1456
1456 if (coro->next) coro->next->prev = coro->prev; 1457 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1458 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1459 if (coro == coro_first) coro_first = coro->next;
1459 1460
… …
1497# define MGf_DUP 0 1498# define MGf_DUP 0
1498#endif 1499#endif
1499}; 1500};
1500 1501
1501static void 1502static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1503prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1504{
1504 ta->prev = SvSTATE (prev_sv); 1505 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1506 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1507 TRANSFER_CHECK (*ta);
1507} 1508}
1508 1509
1509static void 1510static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1511api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1512{
1512 dTHX;
1513 struct transfer_args ta; 1513 struct coro_transfer_args ta;
1514 1514
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1516 TRANSFER (ta, 1);
1517} 1517}
1518 1518
1519/*****************************************************************************/
1520/* gensub: simple closure generation utility */
1521
1522#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1523
1524/* create a closure from XS, returns a code reference */
1525/* the arg can be accessed via GENSUB_ARG from the callback */
1526/* the callback must use dXSARGS/XSRETURN */
1527static SV *
1528gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1529{
1530 CV *cv = (CV *)newSV (0);
1531
1532 sv_upgrade ((SV *)cv, SVt_PVCV);
1533
1534 CvANON_on (cv);
1535 CvISXSUB_on (cv);
1536 CvXSUB (cv) = xsub;
1537 GENSUB_ARG = arg;
1538
1539 return newRV_noinc ((SV *)cv);
1540}
1541
1519/** Coro ********************************************************************/ 1542/** Coro ********************************************************************/
1520 1543
1521static void 1544INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1545coro_enq (pTHX_ struct coro *coro)
1523{ 1546{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1547 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1525} 1548}
1526 1549
1527static SV * 1550INLINE SV *
1528coro_deq (pTHX) 1551coro_deq (pTHX)
1529{ 1552{
1530 int prio; 1553 int prio;
1531 1554
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1555 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1535 1558
1536 return 0; 1559 return 0;
1537} 1560}
1538 1561
1539static int 1562static int
1540api_ready (SV *coro_sv) 1563api_ready (pTHX_ SV *coro_sv)
1541{ 1564{
1542 dTHX;
1543 struct coro *coro; 1565 struct coro *coro;
1544 SV *sv_hook; 1566 SV *sv_hook;
1545 void (*xs_hook)(void); 1567 void (*xs_hook)(void);
1546 1568
1547 if (SvROK (coro_sv)) 1569 if (SvROK (coro_sv))
… …
1552 if (coro->flags & CF_READY) 1574 if (coro->flags & CF_READY)
1553 return 0; 1575 return 0;
1554 1576
1555 coro->flags |= CF_READY; 1577 coro->flags |= CF_READY;
1556 1578
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1579 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1580 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1581
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1582 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1583 ++coro_nready;
1564 1584
1565 UNLOCK;
1566
1567 if (sv_hook) 1585 if (sv_hook)
1568 { 1586 {
1569 dSP; 1587 dSP;
1570 1588
1571 ENTER; 1589 ENTER;
1572 SAVETMPS; 1590 SAVETMPS;
1573 1591
1574 PUSHMARK (SP); 1592 PUSHMARK (SP);
1575 PUTBACK; 1593 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1594 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1595
1579 FREETMPS; 1596 FREETMPS;
1580 LEAVE; 1597 LEAVE;
1581 } 1598 }
1582 1599
… …
1585 1602
1586 return 1; 1603 return 1;
1587} 1604}
1588 1605
1589static int 1606static int
1590api_is_ready (SV *coro_sv) 1607api_is_ready (pTHX_ SV *coro_sv)
1591{ 1608{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1609 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1610}
1596 1611
1597INLINE void 1612INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1613prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1599{ 1614{
1600 SV *prev_sv, *next_sv; 1615 SV *prev_sv, *next_sv;
1601 1616
1602 for (;;) 1617 for (;;)
1603 { 1618 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX); 1619 next_sv = coro_deq (aTHX);
1606 1620
1607 /* nothing to schedule: call the idle handler */ 1621 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv)) 1622 if (expect_false (!next_sv))
1609 { 1623 {
1610 dSP; 1624 dSP;
1611 UNLOCK;
1612 1625
1613 ENTER; 1626 ENTER;
1614 SAVETMPS; 1627 SAVETMPS;
1615 1628
1616 PUSHMARK (SP); 1629 PUSHMARK (SP);
1617 PUTBACK; 1630 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1631 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1619 SPAGAIN;
1620 1632
1621 FREETMPS; 1633 FREETMPS;
1622 LEAVE; 1634 LEAVE;
1623 continue; 1635 continue;
1624 } 1636 }
1625 1637
1626 ta->next = SvSTATE (next_sv); 1638 ta->next = SvSTATE_hv (next_sv);
1627 1639
1628 /* cannot transfer to destroyed coros, skip and look for next */ 1640 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED)) 1641 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 { 1642 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv); 1643 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */ 1644 /* coro_nready has already been taken care of by destroy */
1634 continue; 1645 continue;
1635 } 1646 }
1636 1647
1637 --coro_nready; 1648 --coro_nready;
1638 UNLOCK;
1639 break; 1649 break;
1640 } 1650 }
1641 1651
1642 /* free this only after the transfer */ 1652 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1653 prev_sv = SvRV (coro_current);
1644 ta->prev = SvSTATE (prev_sv); 1654 ta->prev = SvSTATE_hv (prev_sv);
1645 TRANSFER_CHECK (*ta); 1655 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1656 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1647 ta->next->flags &= ~CF_READY; 1657 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1658 SvRV_set (coro_current, next_sv);
1649 1659
1650 LOCK;
1651 free_coro_mortal (aTHX); 1660 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1661 coro_mortal = prev_sv;
1653 UNLOCK;
1654} 1662}
1655 1663
1656INLINE void 1664INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1665prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1666{
1659 api_ready (coro_current); 1667 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1668 prepare_schedule (aTHX_ ta);
1661} 1669}
1662 1670
1663static void 1671INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1672prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1673{
1666 SV *prev = SvRV (coro_current); 1674 SV *prev = SvRV (coro_current);
1667 1675
1668 if (coro_nready) 1676 if (coro_nready)
1669 { 1677 {
1670 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1679 api_ready (aTHX_ prev);
1672 } 1680 }
1673 else 1681 else
1674 ta->prev = ta->next = SvSTATE (prev); 1682 prepare_nop (aTHX_ ta);
1675} 1683}
1676 1684
1677static void 1685static void
1678api_schedule (void) 1686api_schedule (pTHX)
1679{ 1687{
1680 dTHX;
1681 struct transfer_args ta; 1688 struct coro_transfer_args ta;
1682 1689
1683 prepare_schedule (aTHX_ &ta); 1690 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1691 TRANSFER (ta, 1);
1685} 1692}
1686 1693
1687static int 1694static int
1688api_cede (void) 1695api_cede (pTHX)
1689{ 1696{
1690 dTHX;
1691 struct transfer_args ta; 1697 struct coro_transfer_args ta;
1692 1698
1693 prepare_cede (aTHX_ &ta); 1699 prepare_cede (aTHX_ &ta);
1694 1700
1695 if (expect_true (ta.prev != ta.next)) 1701 if (expect_true (ta.prev != ta.next))
1696 { 1702 {
… …
1700 else 1706 else
1701 return 0; 1707 return 0;
1702} 1708}
1703 1709
1704static int 1710static int
1705api_cede_notself (void) 1711api_cede_notself (pTHX)
1706{ 1712{
1707 if (coro_nready) 1713 if (coro_nready)
1708 { 1714 {
1709 dTHX;
1710 struct transfer_args ta; 1715 struct coro_transfer_args ta;
1711 1716
1712 prepare_cede_notself (aTHX_ &ta); 1717 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1718 TRANSFER (ta, 1);
1714 return 1; 1719 return 1;
1715 } 1720 }
1716 else 1721 else
1717 return 0; 1722 return 0;
1718} 1723}
1719 1724
1720static void 1725static void
1721api_trace (SV *coro_sv, int flags) 1726api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1727{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1728 struct coro *coro = SvSTATE (coro_sv);
1725 1729
1726 if (flags & CC_TRACE) 1730 if (flags & CC_TRACE)
1727 { 1731 {
1728 if (!coro->cctx) 1732 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1733 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1734 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1735 croak ("cannot enable tracing on coroutine with custom stack,");
1732 1736
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1737 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1738 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1739 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1740 {
… …
1741 else 1745 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1746 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1747 }
1744} 1748}
1745 1749
1746#if 0 1750/*****************************************************************************/
1751/* rouse callback */
1752
1753#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1754
1755static void
1756coro_rouse_callback (pTHX_ CV *cv)
1757{
1758 dXSARGS;
1759 SV *data = (SV *)GENSUB_ARG;
1760
1761 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1762 {
1763 /* first call, set args */
1764 int i;
1765 AV *av = newAV ();
1766 SV *coro = SvRV (data);
1767
1768 SvRV_set (data, (SV *)av);
1769 api_ready (aTHX_ coro);
1770 SvREFCNT_dec (coro);
1771
1772 /* better take a full copy of the arguments */
1773 while (items--)
1774 av_store (av, items, newSVsv (ST (items)));
1775 }
1776
1777 XSRETURN_EMPTY;
1778}
1779
1747static int 1780static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1781slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1749{ 1782{
1750 AV *padlist; 1783 SV *data = (SV *)frame->data;
1751 AV *av = (AV *)mg->mg_obj; 1784
1785 if (CORO_THROW)
1786 return 0;
1752 1787
1753 abort (); 1788 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1789 return 1;
1790
1791 /* now push all results on the stack */
1792 {
1793 dSP;
1794 AV *av = (AV *)SvRV (data);
1795 int i;
1796
1797 EXTEND (SP, AvFILLp (av) + 1);
1798 for (i = 0; i <= AvFILLp (av); ++i)
1799 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1800
1801 /* we have stolen the elements, so ste length to zero and free */
1802 AvFILLp (av) = -1;
1803 av_undef (av);
1804
1805 PUTBACK;
1806 }
1754 1807
1755 return 0; 1808 return 0;
1756} 1809}
1757 1810
1758static MGVTBL coro_gensub_vtbl = { 1811static void
1759 0, 0, 0, 0, 1812slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 1813{
1761}; 1814 SV *cb;
1762#endif 1815
1816 if (items)
1817 cb = arg [0];
1818 else
1819 {
1820 struct coro *coro = SvSTATE_current;
1821
1822 if (!coro->rouse_cb)
1823 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1824
1825 cb = sv_2mortal (coro->rouse_cb);
1826 coro->rouse_cb = 0;
1827 }
1828
1829 if (!SvROK (cb)
1830 || SvTYPE (SvRV (cb)) != SVt_PVCV
1831 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1832 croak ("Coro::rouse_wait called with illegal callback argument,");
1833
1834 {
1835 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1836 SV *data = (SV *)GENSUB_ARG;
1837
1838 frame->data = (void *)data;
1839 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1840 frame->check = slf_check_rouse_wait;
1841 }
1842}
1843
1844static SV *
1845coro_new_rouse_cb (pTHX)
1846{
1847 HV *hv = (HV *)SvRV (coro_current);
1848 struct coro *coro = SvSTATE_hv (hv);
1849 SV *data = newRV_inc ((SV *)hv);
1850 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1851
1852 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1853 SvREFCNT_dec (data); /* magicext increases the refcount */
1854
1855 SvREFCNT_dec (coro->rouse_cb);
1856 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1857
1858 return cb;
1859}
1860
1861/*****************************************************************************/
1862/* schedule-like-function opcode (SLF) */
1863
1864static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1865static const CV *slf_cv;
1866static SV **slf_argv;
1867static int slf_argc, slf_arga; /* count, allocated */
1868static I32 slf_ax; /* top of stack, for restore */
1869
1870/* this restores the stack in the case we patched the entersub, to */
1871/* recreate the stack frame as perl will on following calls */
1872/* since entersub cleared the stack */
1873static OP *
1874pp_restore (pTHX)
1875{
1876 int i;
1877 SV **SP = PL_stack_base + slf_ax;
1878
1879 PUSHMARK (SP);
1880
1881 EXTEND (SP, slf_argc + 1);
1882
1883 for (i = 0; i < slf_argc; ++i)
1884 PUSHs (sv_2mortal (slf_argv [i]));
1885
1886 PUSHs ((SV *)CvGV (slf_cv));
1887
1888 RETURNOP (slf_restore.op_first);
1889}
1890
1891static void
1892slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1893{
1894 SV **arg = (SV **)slf_frame.data;
1895
1896 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1897}
1898
1899static void
1900slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1901{
1902 if (items != 2)
1903 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1904
1905 frame->prepare = slf_prepare_transfer;
1906 frame->check = slf_check_nop;
1907 frame->data = (void *)arg; /* let's hope it will stay valid */
1908}
1909
1910static void
1911slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1912{
1913 frame->prepare = prepare_schedule;
1914 frame->check = slf_check_nop;
1915}
1916
1917static void
1918slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1919{
1920 frame->prepare = prepare_cede;
1921 frame->check = slf_check_nop;
1922}
1923
1924static void
1925slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1926{
1927 frame->prepare = prepare_cede_notself;
1928 frame->check = slf_check_nop;
1929}
1930
1931/*
1932 * these not obviously related functions are all rolled into one
1933 * function to increase chances that they all will call transfer with the same
1934 * stack offset
1935 * SLF stands for "schedule-like-function".
1936 */
1937static OP *
1938pp_slf (pTHX)
1939{
1940 I32 checkmark; /* mark SP to see how many elements check has pushed */
1941
1942 /* set up the slf frame, unless it has already been set-up */
1943 /* the latter happens when a new coro has been started */
1944 /* or when a new cctx was attached to an existing coroutine */
1945 if (expect_true (!slf_frame.prepare))
1946 {
1947 /* first iteration */
1948 dSP;
1949 SV **arg = PL_stack_base + TOPMARK + 1;
1950 int items = SP - arg; /* args without function object */
1951 SV *gv = *sp;
1952
1953 /* do a quick consistency check on the "function" object, and if it isn't */
1954 /* for us, divert to the real entersub */
1955 if (SvTYPE (gv) != SVt_PVGV
1956 || !GvCV (gv)
1957 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1958 return PL_ppaddr[OP_ENTERSUB](aTHX);
1959
1960 if (!(PL_op->op_flags & OPf_STACKED))
1961 {
1962 /* ampersand-form of call, use @_ instead of stack */
1963 AV *av = GvAV (PL_defgv);
1964 arg = AvARRAY (av);
1965 items = AvFILLp (av) + 1;
1966 }
1967
1968 /* now call the init function, which needs to set up slf_frame */
1969 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1970 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1971
1972 /* pop args */
1973 SP = PL_stack_base + POPMARK;
1974
1975 PUTBACK;
1976 }
1977
1978 /* now that we have a slf_frame, interpret it! */
1979 /* we use a callback system not to make the code needlessly */
1980 /* complicated, but so we can run multiple perl coros from one cctx */
1981
1982 do
1983 {
1984 struct coro_transfer_args ta;
1985
1986 slf_frame.prepare (aTHX_ &ta);
1987 TRANSFER (ta, 0);
1988
1989 checkmark = PL_stack_sp - PL_stack_base;
1990 }
1991 while (slf_frame.check (aTHX_ &slf_frame));
1992
1993 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1994
1995 /* exception handling */
1996 if (expect_false (CORO_THROW))
1997 {
1998 SV *exception = sv_2mortal (CORO_THROW);
1999
2000 CORO_THROW = 0;
2001 sv_setsv (ERRSV, exception);
2002 croak (0);
2003 }
2004
2005 /* return value handling - mostly like entersub */
2006 /* make sure we put something on the stack in scalar context */
2007 if (GIMME_V == G_SCALAR)
2008 {
2009 dSP;
2010 SV **bot = PL_stack_base + checkmark;
2011
2012 if (sp == bot) /* too few, push undef */
2013 bot [1] = &PL_sv_undef;
2014 else if (sp != bot + 1) /* too many, take last one */
2015 bot [1] = *sp;
2016
2017 SP = bot + 1;
2018
2019 PUTBACK;
2020 }
2021
2022 return NORMAL;
2023}
2024
2025static void
2026api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2027{
2028 int i;
2029 SV **arg = PL_stack_base + ax;
2030 int items = PL_stack_sp - arg + 1;
2031
2032 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2033
2034 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2035 && PL_op->op_ppaddr != pp_slf)
2036 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2037
2038 CvFLAGS (cv) |= CVf_SLF;
2039 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2040 slf_cv = cv;
2041
2042 /* we patch the op, and then re-run the whole call */
2043 /* we have to put the same argument on the stack for this to work */
2044 /* and this will be done by pp_restore */
2045 slf_restore.op_next = (OP *)&slf_restore;
2046 slf_restore.op_type = OP_CUSTOM;
2047 slf_restore.op_ppaddr = pp_restore;
2048 slf_restore.op_first = PL_op;
2049
2050 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2051
2052 if (PL_op->op_flags & OPf_STACKED)
2053 {
2054 if (items > slf_arga)
2055 {
2056 slf_arga = items;
2057 free (slf_argv);
2058 slf_argv = malloc (slf_arga * sizeof (SV *));
2059 }
2060
2061 slf_argc = items;
2062
2063 for (i = 0; i < items; ++i)
2064 slf_argv [i] = SvREFCNT_inc (arg [i]);
2065 }
2066 else
2067 slf_argc = 0;
2068
2069 PL_op->op_ppaddr = pp_slf;
2070 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2071
2072 PL_op = (OP *)&slf_restore;
2073}
1763 2074
1764/*****************************************************************************/ 2075/*****************************************************************************/
1765/* PerlIO::cede */ 2076/* PerlIO::cede */
1766 2077
1767typedef struct 2078typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2106 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2107 double now = nvtime ();
1797 2108
1798 if (now >= self->next) 2109 if (now >= self->next)
1799 { 2110 {
1800 api_cede (); 2111 api_cede (aTHX);
1801 self->next = now + self->every; 2112 self->next = now + self->every;
1802 } 2113 }
1803 2114
1804 return PerlIOBuf_flush (aTHX_ f); 2115 return PerlIOBuf_flush (aTHX_ f);
1805} 2116}
… …
1835 PerlIOBuf_get_cnt, 2146 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2147 PerlIOBuf_set_ptrcnt,
1837}; 2148};
1838 2149
1839/*****************************************************************************/ 2150/*****************************************************************************/
2151/* Coro::Semaphore & Coro::Signal */
1840 2152
1841static const CV *ssl_cv; /* for quick consistency check */
1842
1843static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *ssl_arg0;
1845static SV *ssl_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2153static SV *
1851pp_restore (pTHX) 2154coro_waitarray_new (pTHX_ int count)
1852{ 2155{
2156 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2157 AV *av = newAV ();
2158 SV **ary;
2159
2160 /* unfortunately, building manually saves memory */
2161 Newx (ary, 2, SV *);
2162 AvALLOC (av) = ary;
2163 /*AvARRAY (av) = ary;*/
2164 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2165 AvMAX (av) = 1;
2166 AvFILLp (av) = 0;
2167 ary [0] = newSViv (count);
2168
2169 return newRV_noinc ((SV *)av);
2170}
2171
2172/* semaphore */
2173
2174static void
2175coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2176{
2177 SV *count_sv = AvARRAY (av)[0];
2178 IV count = SvIVX (count_sv);
2179
2180 count += adjust;
2181 SvIVX (count_sv) = count;
2182
2183 /* now wake up as many waiters as are expected to lock */
2184 while (count > 0 && AvFILLp (av) > 0)
2185 {
2186 SV *cb;
2187
2188 /* swap first two elements so we can shift a waiter */
2189 AvARRAY (av)[0] = AvARRAY (av)[1];
2190 AvARRAY (av)[1] = count_sv;
2191 cb = av_shift (av);
2192
2193 if (SvOBJECT (cb))
2194 {
2195 api_ready (aTHX_ cb);
2196 --count;
2197 }
2198 else if (SvTYPE (cb) == SVt_PVCV)
2199 {
2200 dSP;
2201 PUSHMARK (SP);
2202 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2203 PUTBACK;
2204 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2205 }
2206
2207 SvREFCNT_dec (cb);
2208 }
2209}
2210
2211static void
2212coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2213{
2214 /* call $sem->adjust (0) to possibly wake up some other waiters */
2215 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2216}
2217
2218static int
2219slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2220{
2221 AV *av = (AV *)frame->data;
2222 SV *count_sv = AvARRAY (av)[0];
2223
2224 /* if we are about to throw, don't actually acquire the lock, just throw */
2225 if (CORO_THROW)
2226 return 0;
2227 else if (SvIVX (count_sv) > 0)
2228 {
2229 SvSTATE_current->on_destroy = 0;
2230
2231 if (acquire)
2232 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2233 else
2234 coro_semaphore_adjust (aTHX_ av, 0);
2235
2236 return 0;
2237 }
2238 else
2239 {
2240 int i;
2241 /* if we were woken up but can't down, we look through the whole */
2242 /* waiters list and only add us if we aren't in there already */
2243 /* this avoids some degenerate memory usage cases */
2244
2245 for (i = 1; i <= AvFILLp (av); ++i)
2246 if (AvARRAY (av)[i] == SvRV (coro_current))
2247 return 1;
2248
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2250 return 1;
2251 }
2252}
2253
2254static int
2255slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2256{
2257 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2258}
2259
2260static int
2261slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2262{
2263 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2264}
2265
2266static void
2267slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2268{
2269 AV *av = (AV *)SvRV (arg [0]);
2270
2271 if (SvIVX (AvARRAY (av)[0]) > 0)
2272 {
2273 frame->data = (void *)av;
2274 frame->prepare = prepare_nop;
2275 }
2276 else
2277 {
2278 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2279
2280 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2281 frame->prepare = prepare_schedule;
2282
2283 /* to avoid race conditions when a woken-up coro gets terminated */
2284 /* we arrange for a temporary on_destroy that calls adjust (0) */
2285 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2286 }
2287}
2288
2289static void
2290slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2293 frame->check = slf_check_semaphore_down;
2294}
2295
2296static void
2297slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 if (items >= 2)
2300 {
2301 /* callback form */
2302 AV *av = (AV *)SvRV (arg [0]);
2303 CV *cb_cv = coro_sv_2cv (arg [1]);
2304
2305 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2306
2307 if (SvIVX (AvARRAY (av)[0]) > 0)
2308 coro_semaphore_adjust (aTHX_ av, 0);
2309
2310 frame->prepare = prepare_nop;
2311 frame->check = slf_check_nop;
2312 }
2313 else
2314 {
2315 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2316 frame->check = slf_check_semaphore_wait;
2317 }
2318}
2319
2320/* signal */
2321
2322static void
2323coro_signal_wake (pTHX_ AV *av, int count)
2324{
2325 SvIVX (AvARRAY (av)[0]) = 0;
2326
2327 /* now signal count waiters */
2328 while (count > 0 && AvFILLp (av) > 0)
2329 {
2330 SV *cb;
2331
2332 /* swap first two elements so we can shift a waiter */
2333 cb = AvARRAY (av)[0];
2334 AvARRAY (av)[0] = AvARRAY (av)[1];
2335 AvARRAY (av)[1] = cb;
2336
2337 cb = av_shift (av);
2338
2339 api_ready (aTHX_ cb);
2340 sv_setiv (cb, 0); /* signal waiter */
2341 SvREFCNT_dec (cb);
2342
2343 --count;
2344 }
2345}
2346
2347static int
2348slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2349{
2350 /* if we are about to throw, also stop waiting */
2351 return SvROK ((SV *)frame->data) && !CORO_THROW;
2352}
2353
2354static void
2355slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2356{
2357 AV *av = (AV *)SvRV (arg [0]);
2358
2359 if (SvIVX (AvARRAY (av)[0]))
2360 {
2361 SvIVX (AvARRAY (av)[0]) = 0;
2362 frame->prepare = prepare_nop;
2363 frame->check = slf_check_nop;
2364 }
2365 else
2366 {
2367 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2368
2369 av_push (av, waiter);
2370
2371 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2372 frame->prepare = prepare_schedule;
2373 frame->check = slf_check_signal_wait;
2374 }
2375}
2376
2377/*****************************************************************************/
2378/* Coro::AIO */
2379
2380#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2381
2382/* helper storage struct */
2383struct io_state
2384{
2385 int errorno;
2386 I32 laststype; /* U16 in 5.10.0 */
2387 int laststatval;
2388 Stat_t statcache;
2389};
2390
2391static void
2392coro_aio_callback (pTHX_ CV *cv)
2393{
2394 dXSARGS;
2395 AV *state = (AV *)GENSUB_ARG;
2396 SV *coro = av_pop (state);
2397 SV *data_sv = newSV (sizeof (struct io_state));
2398
2399 av_extend (state, items);
2400
2401 sv_upgrade (data_sv, SVt_PV);
2402 SvCUR_set (data_sv, sizeof (struct io_state));
2403 SvPOK_only (data_sv);
2404
2405 {
2406 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2407
2408 data->errorno = errno;
2409 data->laststype = PL_laststype;
2410 data->laststatval = PL_laststatval;
2411 data->statcache = PL_statcache;
2412 }
2413
2414 /* now build the result vector out of all the parameters and the data_sv */
2415 {
2416 int i;
2417
2418 for (i = 0; i < items; ++i)
2419 av_push (state, SvREFCNT_inc_NN (ST (i)));
2420 }
2421
2422 av_push (state, data_sv);
2423
2424 api_ready (aTHX_ coro);
2425 SvREFCNT_dec (coro);
2426 SvREFCNT_dec ((AV *)state);
2427}
2428
2429static int
2430slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2431{
2432 AV *state = (AV *)frame->data;
2433
2434 /* if we are about to throw, return early */
2435 /* this does not cancel the aio request, but at least */
2436 /* it quickly returns */
2437 if (CORO_THROW)
2438 return 0;
2439
2440 /* one element that is an RV? repeat! */
2441 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2442 return 1;
2443
2444 /* restore status */
2445 {
2446 SV *data_sv = av_pop (state);
2447 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2448
2449 errno = data->errorno;
2450 PL_laststype = data->laststype;
2451 PL_laststatval = data->laststatval;
2452 PL_statcache = data->statcache;
2453
2454 SvREFCNT_dec (data_sv);
2455 }
2456
2457 /* push result values */
2458 {
1853 dSP; 2459 dSP;
2460 int i;
1854 2461
2462 EXTEND (SP, AvFILLp (state) + 1);
2463 for (i = 0; i <= AvFILLp (state); ++i)
2464 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2465
2466 PUTBACK;
2467 }
2468
2469 return 0;
2470}
2471
2472static void
2473slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2474{
2475 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2476 SV *coro_hv = SvRV (coro_current);
2477 struct coro *coro = SvSTATE_hv (coro_hv);
2478
2479 /* put our coroutine id on the state arg */
2480 av_push (state, SvREFCNT_inc_NN (coro_hv));
2481
2482 /* first see whether we have a non-zero priority and set it as AIO prio */
2483 if (coro->prio)
2484 {
2485 dSP;
2486
2487 static SV *prio_cv;
2488 static SV *prio_sv;
2489
2490 if (expect_false (!prio_cv))
2491 {
2492 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2493 prio_sv = newSViv (0);
2494 }
2495
2496 PUSHMARK (SP);
2497 sv_setiv (prio_sv, coro->prio);
2498 XPUSHs (prio_sv);
2499
2500 PUTBACK;
2501 call_sv (prio_cv, G_VOID | G_DISCARD);
2502 }
2503
2504 /* now call the original request */
2505 {
2506 dSP;
2507 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2508 int i;
2509
1855 PUSHMARK (SP); 2510 PUSHMARK (SP);
1856 2511
1857 EXTEND (SP, 3); 2512 /* first push all args to the stack */
1858 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2513 EXTEND (SP, items + 1);
1859 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1860 PUSHs ((SV *)CvGV (ssl_cv));
1861 2514
1862 RETURNOP (ssl_restore.op_first); 2515 for (i = 0; i < items; ++i)
1863} 2516 PUSHs (arg [i]);
1864 2517
1865#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2518 /* now push the callback closure */
2519 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2520
1867/* declare prototype */ 2521 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 */
1875static OP *
1876pp_set_stacklevel (pTHX)
1877{
1878 dSP;
1879 struct transfer_args ta;
1880 SV **arg = PL_stack_base + TOPMARK + 1;
1881 int items = SP - arg; /* args without function object */
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK; 2522 PUTBACK;
1900 switch (PL_op->op_private & OPpENTERSUB_SSL) 2523 call_sv ((SV *)req, G_VOID | G_DISCARD);
1901 {
1902 case 0:
1903 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1909
1910 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 prepare_cede_notself (aTHX_ &ta);
1923 break;
1924 } 2524 }
1925 2525
1926 TRANSFER (ta, 0); 2526 /* now that the requets is going, we loop toll we have a result */
1927 SPAGAIN; 2527 frame->data = (void *)state;
1928 2528 frame->prepare = prepare_schedule;
1929skip: 2529 frame->check = slf_check_aio_req;
1930 PUTBACK;
1931 SSL_TAIL;
1932 SPAGAIN;
1933 RETURN;
1934} 2530}
1935 2531
1936static void 2532static void
1937coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2533coro_aio_req_xs (pTHX_ CV *cv)
1938{ 2534{
1939 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2535 dXSARGS;
1940 2536
1941 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2537 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1942 ssl_cv = cv;
1943 2538
1944 /* we patch the op, and then re-run the whole call */ 2539 XSRETURN_EMPTY;
1945 /* we have to put some dummy argument on the stack for this to work */
1946 ssl_restore.op_next = (OP *)&ssl_restore;
1947 ssl_restore.op_type = OP_NULL;
1948 ssl_restore.op_ppaddr = pp_restore;
1949 ssl_restore.op_first = PL_op;
1950
1951 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1952 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1953
1954 PL_op->op_ppaddr = pp_set_stacklevel;
1955 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1956
1957 PL_op = (OP *)&ssl_restore;
1958} 2540}
2541
2542/*****************************************************************************/
1959 2543
1960MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2544MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1961 2545
1962PROTOTYPES: DISABLE 2546PROTOTYPES: DISABLE
1963 2547
1964BOOT: 2548BOOT:
1965{ 2549{
1966#ifdef USE_ITHREADS 2550#ifdef USE_ITHREADS
1967 MUTEX_INIT (&coro_lock);
1968# if CORO_PTHREAD 2551# if CORO_PTHREAD
1969 coro_thx = PERL_GET_CONTEXT; 2552 coro_thx = PERL_GET_CONTEXT;
1970# endif 2553# endif
1971#endif 2554#endif
1972 BOOT_PAGESIZE; 2555 BOOT_PAGESIZE;
… …
1993 main_top_env = PL_top_env; 2576 main_top_env = PL_top_env;
1994 2577
1995 while (main_top_env->je_prev) 2578 while (main_top_env->je_prev)
1996 main_top_env = main_top_env->je_prev; 2579 main_top_env = main_top_env->je_prev;
1997 2580
2581 {
2582 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2583
2584 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2585 hv_store_ent (PL_custom_op_names, slf,
2586 newSVpv ("coro_slf", 0), 0);
2587
2588 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2589 hv_store_ent (PL_custom_op_descs, slf,
2590 newSVpv ("coro schedule like function", 0), 0);
2591 }
2592
1998 coroapi.ver = CORO_API_VERSION; 2593 coroapi.ver = CORO_API_VERSION;
1999 coroapi.rev = CORO_API_REVISION; 2594 coroapi.rev = CORO_API_REVISION;
2595
2000 coroapi.transfer = api_transfer; 2596 coroapi.transfer = api_transfer;
2597
2598 coroapi.sv_state = SvSTATE_;
2599 coroapi.execute_slf = api_execute_slf;
2600 coroapi.prepare_nop = prepare_nop;
2601 coroapi.prepare_schedule = prepare_schedule;
2602 coroapi.prepare_cede = prepare_cede;
2603 coroapi.prepare_cede_notself = prepare_cede_notself;
2001 2604
2002 { 2605 {
2003 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2606 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2004 2607
2005 if (!svp) croak ("Time::HiRes is required"); 2608 if (!svp) croak ("Time::HiRes is required");
… …
2016 CODE: 2619 CODE:
2017{ 2620{
2018 struct coro *coro; 2621 struct coro *coro;
2019 MAGIC *mg; 2622 MAGIC *mg;
2020 HV *hv; 2623 HV *hv;
2624 CV *cb;
2021 int i; 2625 int i;
2626
2627 if (items > 1)
2628 {
2629 cb = coro_sv_2cv (ST (1));
2630
2631 if (CvISXSUB (cb))
2632 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2633
2634 if (!CvROOT (cb))
2635 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2636 }
2022 2637
2023 Newz (0, coro, 1, struct coro); 2638 Newz (0, coro, 1, struct coro);
2024 coro->args = newAV (); 2639 coro->args = newAV ();
2025 coro->flags = CF_NEW; 2640 coro->flags = CF_NEW;
2026 2641
… …
2031 coro->hv = hv = newHV (); 2646 coro->hv = hv = newHV ();
2032 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2647 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2033 mg->mg_flags |= MGf_DUP; 2648 mg->mg_flags |= MGf_DUP;
2034 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2649 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2035 2650
2651 if (items > 1)
2652 {
2653 coro->startcv = SvREFCNT_inc_NN (cb);
2654
2036 av_extend (coro->args, items - 1); 2655 av_extend (coro->args, items - 1);
2037 for (i = 1; i < items; i++) 2656 for (i = 2; i < items; i++)
2038 av_push (coro->args, newSVsv (ST (i))); 2657 av_push (coro->args, newSVsv (ST (i)));
2658 }
2039} 2659}
2040 OUTPUT: 2660 OUTPUT:
2041 RETVAL 2661 RETVAL
2042 2662
2043void 2663void
2044_set_stacklevel (...) 2664transfer (...)
2045 ALIAS: 2665 PROTOTYPE: $$
2046 Coro::State::transfer = 1 2666 CODE:
2047 Coro::schedule = 2 2667 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2048 Coro::cede = 3
2049 Coro::cede_notself = 4
2050 CODE:
2051 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2052 2668
2053bool 2669bool
2054_destroy (SV *coro_sv) 2670_destroy (SV *coro_sv)
2055 CODE: 2671 CODE:
2056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2672 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2063 CODE: 2679 CODE:
2064 _exit (code); 2680 _exit (code);
2065 2681
2066int 2682int
2067cctx_stacksize (int new_stacksize = 0) 2683cctx_stacksize (int new_stacksize = 0)
2684 PROTOTYPE: ;$
2068 CODE: 2685 CODE:
2069 RETVAL = cctx_stacksize; 2686 RETVAL = cctx_stacksize;
2070 if (new_stacksize) 2687 if (new_stacksize)
2071 { 2688 {
2072 cctx_stacksize = new_stacksize; 2689 cctx_stacksize = new_stacksize;
… …
2075 OUTPUT: 2692 OUTPUT:
2076 RETVAL 2693 RETVAL
2077 2694
2078int 2695int
2079cctx_max_idle (int max_idle = 0) 2696cctx_max_idle (int max_idle = 0)
2697 PROTOTYPE: ;$
2080 CODE: 2698 CODE:
2081 RETVAL = cctx_max_idle; 2699 RETVAL = cctx_max_idle;
2082 if (max_idle > 1) 2700 if (max_idle > 1)
2083 cctx_max_idle = max_idle; 2701 cctx_max_idle = max_idle;
2084 OUTPUT: 2702 OUTPUT:
2085 RETVAL 2703 RETVAL
2086 2704
2087int 2705int
2088cctx_count () 2706cctx_count ()
2707 PROTOTYPE:
2089 CODE: 2708 CODE:
2090 RETVAL = cctx_count; 2709 RETVAL = cctx_count;
2091 OUTPUT: 2710 OUTPUT:
2092 RETVAL 2711 RETVAL
2093 2712
2094int 2713int
2095cctx_idle () 2714cctx_idle ()
2715 PROTOTYPE:
2096 CODE: 2716 CODE:
2097 RETVAL = cctx_idle; 2717 RETVAL = cctx_idle;
2098 OUTPUT: 2718 OUTPUT:
2099 RETVAL 2719 RETVAL
2100 2720
2101void 2721void
2102list () 2722list ()
2723 PROTOTYPE:
2103 PPCODE: 2724 PPCODE:
2104{ 2725{
2105 struct coro *coro; 2726 struct coro *coro;
2106 for (coro = coro_first; coro; coro = coro->next) 2727 for (coro = coro_first; coro; coro = coro->next)
2107 if (coro->hv) 2728 if (coro->hv)
… …
2169 2790
2170void 2791void
2171throw (Coro::State self, SV *throw = &PL_sv_undef) 2792throw (Coro::State self, SV *throw = &PL_sv_undef)
2172 PROTOTYPE: $;$ 2793 PROTOTYPE: $;$
2173 CODE: 2794 CODE:
2795{
2796 struct coro *current = SvSTATE_current;
2797 SV **throwp = self == current ? &CORO_THROW : &self->except;
2174 SvREFCNT_dec (self->throw); 2798 SvREFCNT_dec (*throwp);
2175 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2799 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2800}
2176 2801
2177void 2802void
2178api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2803api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2804 PROTOTYPE: $;$
2805 C_ARGS: aTHX_ coro, flags
2179 2806
2180SV * 2807SV *
2181has_cctx (Coro::State coro) 2808has_cctx (Coro::State coro)
2182 PROTOTYPE: $ 2809 PROTOTYPE: $
2183 CODE: 2810 CODE:
… …
2207 OUTPUT: 2834 OUTPUT:
2208 RETVAL 2835 RETVAL
2209 2836
2210void 2837void
2211force_cctx () 2838force_cctx ()
2839 PROTOTYPE:
2212 CODE: 2840 CODE:
2213 struct coro *coro = SvSTATE (coro_current);
2214 coro->cctx->idle_sp = 0; 2841 SvSTATE_current->cctx->idle_sp = 0;
2215 2842
2216void 2843void
2217swap_defsv (Coro::State self) 2844swap_defsv (Coro::State self)
2218 PROTOTYPE: $ 2845 PROTOTYPE: $
2219 ALIAS: 2846 ALIAS:
2220 swap_defav = 1 2847 swap_defav = 1
2221 CODE: 2848 CODE:
2222 if (!self->slot) 2849 if (!self->slot)
2223 croak ("cannot swap state with coroutine that has no saved state"); 2850 croak ("cannot swap state with coroutine that has no saved state,");
2224 else 2851 else
2225 { 2852 {
2226 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2853 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2227 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2854 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2228 2855
2229 SV *tmp = *src; *src = *dst; *dst = tmp; 2856 SV *tmp = *src; *src = *dst; *dst = tmp;
2230 } 2857 }
2858
2231 2859
2232MODULE = Coro::State PACKAGE = Coro 2860MODULE = Coro::State PACKAGE = Coro
2233 2861
2234BOOT: 2862BOOT:
2235{ 2863{
… …
2260 coroapi.schedule = api_schedule; 2888 coroapi.schedule = api_schedule;
2261 coroapi.cede = api_cede; 2889 coroapi.cede = api_cede;
2262 coroapi.cede_notself = api_cede_notself; 2890 coroapi.cede_notself = api_cede_notself;
2263 coroapi.ready = api_ready; 2891 coroapi.ready = api_ready;
2264 coroapi.is_ready = api_is_ready; 2892 coroapi.is_ready = api_is_ready;
2265 coroapi.nready = &coro_nready; 2893 coroapi.nready = coro_nready;
2266 coroapi.current = coro_current; 2894 coroapi.current = coro_current;
2267 2895
2268 GCoroAPI = &coroapi; 2896 /*GCoroAPI = &coroapi;*/
2269 sv_setiv (sv, (IV)&coroapi); 2897 sv_setiv (sv, (IV)&coroapi);
2270 SvREADONLY_on (sv); 2898 SvREADONLY_on (sv);
2271 } 2899 }
2272} 2900}
2901
2902void
2903schedule (...)
2904 CODE:
2905 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2906
2907void
2908cede (...)
2909 CODE:
2910 CORO_EXECUTE_SLF_XS (slf_init_cede);
2911
2912void
2913cede_notself (...)
2914 CODE:
2915 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2273 2916
2274void 2917void
2275_set_current (SV *current) 2918_set_current (SV *current)
2276 PROTOTYPE: $ 2919 PROTOTYPE: $
2277 CODE: 2920 CODE:
… …
2280 2923
2281void 2924void
2282_set_readyhook (SV *hook) 2925_set_readyhook (SV *hook)
2283 PROTOTYPE: $ 2926 PROTOTYPE: $
2284 CODE: 2927 CODE:
2285 LOCK;
2286 SvREFCNT_dec (coro_readyhook); 2928 SvREFCNT_dec (coro_readyhook);
2287 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2929 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2288 UNLOCK;
2289 2930
2290int 2931int
2291prio (Coro::State coro, int newprio = 0) 2932prio (Coro::State coro, int newprio = 0)
2933 PROTOTYPE: $;$
2292 ALIAS: 2934 ALIAS:
2293 nice = 1 2935 nice = 1
2294 CODE: 2936 CODE:
2295{ 2937{
2296 RETVAL = coro->prio; 2938 RETVAL = coro->prio;
… …
2311 2953
2312SV * 2954SV *
2313ready (SV *self) 2955ready (SV *self)
2314 PROTOTYPE: $ 2956 PROTOTYPE: $
2315 CODE: 2957 CODE:
2316 RETVAL = boolSV (api_ready (self)); 2958 RETVAL = boolSV (api_ready (aTHX_ self));
2317 OUTPUT: 2959 OUTPUT:
2318 RETVAL 2960 RETVAL
2319 2961
2320int 2962int
2321nready (...) 2963nready (...)
… …
2328# for async_pool speedup 2970# for async_pool speedup
2329void 2971void
2330_pool_1 (SV *cb) 2972_pool_1 (SV *cb)
2331 CODE: 2973 CODE:
2332{ 2974{
2333 struct coro *coro = SvSTATE (coro_current);
2334 HV *hv = (HV *)SvRV (coro_current); 2975 HV *hv = (HV *)SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv ((SV *)hv);
2335 AV *defav = GvAV (PL_defgv); 2977 AV *defav = GvAV (PL_defgv);
2336 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2978 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2337 AV *invoke_av; 2979 AV *invoke_av;
2338 int i, len; 2980 int i, len;
2339 2981
… …
2360 { 3002 {
2361 av_fill (defav, len - 1); 3003 av_fill (defav, len - 1);
2362 for (i = 0; i < len; ++i) 3004 for (i = 0; i < len; ++i)
2363 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3005 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2364 } 3006 }
2365
2366 SvREFCNT_dec (invoke);
2367} 3007}
2368 3008
2369void 3009void
2370_pool_2 (SV *cb) 3010_pool_2 (SV *cb)
2371 CODE: 3011 CODE:
2372{ 3012{
2373 struct coro *coro = SvSTATE (coro_current); 3013 HV *hv = (HV *)SvRV (coro_current);
3014 struct coro *coro = SvSTATE_hv ((SV *)hv);
2374 3015
2375 sv_setsv (cb, &PL_sv_undef); 3016 sv_setsv (cb, &PL_sv_undef);
2376 3017
2377 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2378 coro->saved_deffh = 0; 3019 coro->saved_deffh = 0;
… …
2385 SvREFCNT_dec (old); 3026 SvREFCNT_dec (old);
2386 croak ("\3async_pool terminate\2\n"); 3027 croak ("\3async_pool terminate\2\n");
2387 } 3028 }
2388 3029
2389 av_clear (GvAV (PL_defgv)); 3030 av_clear (GvAV (PL_defgv));
2390 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3031 hv_store (hv, "desc", sizeof ("desc") - 1,
2391 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3032 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2392 3033
2393 coro->prio = 0; 3034 coro->prio = 0;
2394 3035
2395 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3036 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2396 api_trace (coro_current, 0); 3037 api_trace (aTHX_ coro_current, 0);
2397 3038
2398 av_push (av_async_pool, newSVsv (coro_current)); 3039 av_push (av_async_pool, newSVsv (coro_current));
2399} 3040}
2400 3041
2401#if 0
2402
2403void
2404_generator_call (...)
2405 PROTOTYPE: @
2406 PPCODE:
2407 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2408 xxxx
2409 abort ();
2410
2411SV * 3042SV *
2412gensub (SV *sub, ...) 3043rouse_cb ()
2413 PROTOTYPE: &;@ 3044 PROTOTYPE:
2414 CODE: 3045 CODE:
2415{ 3046 RETVAL = coro_new_rouse_cb (aTHX);
2416 struct coro *coro;
2417 MAGIC *mg;
2418 CV *xcv;
2419 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2420 int i;
2421
2422 CvGV (ncv) = CvGV (cv);
2423 CvFILE (ncv) = CvFILE (cv);
2424
2425 Newz (0, coro, 1, struct coro);
2426 coro->args = newAV ();
2427 coro->flags = CF_NEW;
2428
2429 av_extend (coro->args, items - 1);
2430 for (i = 1; i < items; i++)
2431 av_push (coro->args, newSVsv (ST (i)));
2432
2433 CvISXSUB_on (ncv);
2434 CvXSUBANY (ncv).any_ptr = (void *)coro;
2435
2436 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2437
2438 CvXSUB (ncv) = CvXSUB (xcv);
2439 CvANON_on (ncv);
2440
2441 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2442 RETVAL = newRV_noinc ((SV *)ncv);
2443}
2444 OUTPUT: 3047 OUTPUT:
2445 RETVAL 3048 RETVAL
2446 3049
2447#endif
2448
2449
2450MODULE = Coro::State PACKAGE = Coro::AIO
2451
2452void 3050void
2453_get_state (SV *self) 3051rouse_wait (...)
3052 PROTOTYPE: ;$
2454 PPCODE: 3053 PPCODE:
2455{ 3054 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2456 AV *defav = GvAV (PL_defgv);
2457 AV *av = newAV ();
2458 int i;
2459 SV *data_sv = newSV (sizeof (struct io_state));
2460 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2461 SvCUR_set (data_sv, sizeof (struct io_state));
2462 SvPOK_only (data_sv);
2463 3055
2464 data->errorno = errno;
2465 data->laststype = PL_laststype;
2466 data->laststatval = PL_laststatval;
2467 data->statcache = PL_statcache;
2468 3056
2469 av_extend (av, AvFILLp (defav) + 1 + 1); 3057MODULE = Coro::State PACKAGE = PerlIO::cede
2470 3058
2471 for (i = 0; i <= AvFILLp (defav); ++i) 3059BOOT:
2472 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3060 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2473 3061
2474 av_push (av, data_sv);
2475 3062
2476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3063MODULE = Coro::State PACKAGE = Coro::Semaphore
2477 3064
2478 api_ready (self); 3065SV *
2479} 3066new (SV *klass, SV *count = 0)
3067 CODE:
3068 RETVAL = sv_bless (
3069 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3070 GvSTASH (CvGV (cv))
3071 );
3072 OUTPUT:
3073 RETVAL
3074
3075# helper for Coro::Channel
3076SV *
3077_alloc (int count)
3078 CODE:
3079 RETVAL = coro_waitarray_new (aTHX_ count);
3080 OUTPUT:
3081 RETVAL
3082
3083SV *
3084count (SV *self)
3085 CODE:
3086 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3087 OUTPUT:
3088 RETVAL
2480 3089
2481void 3090void
2482_set_state (SV *state) 3091up (SV *self, int adjust = 1)
2483 PROTOTYPE: $ 3092 ALIAS:
3093 adjust = 1
3094 CODE:
3095 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3096
3097void
3098down (...)
3099 CODE:
3100 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3101
3102void
3103wait (...)
3104 CODE:
3105 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3106
3107void
3108try (SV *self)
3109 PPCODE:
3110{
3111 AV *av = (AV *)SvRV (self);
3112 SV *count_sv = AvARRAY (av)[0];
3113 IV count = SvIVX (count_sv);
3114
3115 if (count > 0)
3116 {
3117 --count;
3118 SvIVX (count_sv) = count;
3119 XSRETURN_YES;
3120 }
3121 else
3122 XSRETURN_NO;
3123}
3124
3125void
3126waiters (SV *self)
3127 PPCODE:
3128{
3129 AV *av = (AV *)SvRV (self);
3130 int wcount = AvFILLp (av) + 1 - 1;
3131
3132 if (GIMME_V == G_SCALAR)
3133 XPUSHs (sv_2mortal (newSViv (wcount)));
3134 else
3135 {
3136 int i;
3137 EXTEND (SP, wcount);
3138 for (i = 1; i <= wcount; ++i)
3139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3140 }
3141}
3142
3143MODULE = Coro::State PACKAGE = Coro::Signal
3144
3145SV *
3146new (SV *klass)
2484 PPCODE: 3147 CODE:
3148 RETVAL = sv_bless (
3149 coro_waitarray_new (aTHX_ 0),
3150 GvSTASH (CvGV (cv))
3151 );
3152 OUTPUT:
3153 RETVAL
3154
3155void
3156wait (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3159
3160void
3161broadcast (SV *self)
3162 CODE:
2485{ 3163{
2486 AV *av = (AV *)SvRV (state); 3164 AV *av = (AV *)SvRV (self);
2487 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3165 coro_signal_wake (aTHX_ av, AvFILLp (av));
2488 int i; 3166}
2489 3167
2490 errno = data->errorno; 3168void
2491 PL_laststype = data->laststype; 3169send (SV *self)
2492 PL_laststatval = data->laststatval; 3170 CODE:
2493 PL_statcache = data->statcache; 3171{
3172 AV *av = (AV *)SvRV (self);
2494 3173
2495 EXTEND (SP, AvFILLp (av)); 3174 if (AvFILLp (av))
2496 for (i = 0; i < AvFILLp (av); ++i) 3175 coro_signal_wake (aTHX_ av, 1);
2497 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3176 else
3177 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2498} 3178}
3179
3180IV
3181awaited (SV *self)
3182 CODE:
3183 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3184 OUTPUT:
3185 RETVAL
2499 3186
2500 3187
2501MODULE = Coro::State PACKAGE = Coro::AnyEvent 3188MODULE = Coro::State PACKAGE = Coro::AnyEvent
2502 3189
2503BOOT: 3190BOOT:
2504 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3191 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2505 3192
2506SV * 3193void
2507_schedule (...) 3194_schedule (...)
2508 PROTOTYPE: @
2509 CODE: 3195 CODE:
2510{ 3196{
2511 static int incede; 3197 static int incede;
2512 3198
2513 api_cede_notself (); 3199 api_cede_notself (aTHX);
2514 3200
2515 ++incede; 3201 ++incede;
2516 while (coro_nready >= incede && api_cede ()) 3202 while (coro_nready >= incede && api_cede (aTHX))
2517 ; 3203 ;
2518 3204
2519 sv_setsv (sv_activity, &PL_sv_undef); 3205 sv_setsv (sv_activity, &PL_sv_undef);
2520 if (coro_nready >= incede) 3206 if (coro_nready >= incede)
2521 { 3207 {
2522 PUSHMARK (SP); 3208 PUSHMARK (SP);
2523 PUTBACK; 3209 PUTBACK;
2524 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3210 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2525 SPAGAIN;
2526 } 3211 }
2527 3212
2528 --incede; 3213 --incede;
2529} 3214}
2530 3215
2531 3216
2532MODULE = Coro::State PACKAGE = PerlIO::cede 3217MODULE = Coro::State PACKAGE = Coro::AIO
2533 3218
2534BOOT: 3219void
2535 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3220_register (char *target, char *proto, SV *req)
3221 CODE:
3222{
3223 CV *req_cv = coro_sv_2cv (req);
3224 /* newXSproto doesn't return the CV on 5.8 */
3225 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3226 sv_setpv ((SV *)slf_cv, proto);
3227 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3228}
2536 3229

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