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Comparing Coro/Coro/State.xs (file contents):
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC vs.
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC

… …
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
… …
142#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
143 146
144#include "CoroAPI.h" 147#include "CoroAPI.h"
145 148
146#ifdef USE_ITHREADS 149#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 150# if CORO_PTHREAD
152static void *coro_thx; 151static void *coro_thx;
153# endif 152# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 153#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};
176 154
177static double (*nvtime)(); /* so why doesn't it take void? */ 155static double (*nvtime)(); /* so why doesn't it take void? */
178 156
179static U32 cctx_gen; 157static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 158static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 161static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 163static 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};
192 164
193static GV *irsgv; /* $/ */ 165static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 166static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 167static SV *rv_diehook;
196static SV *rv_warnhook; 168static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 189};
218 190
219/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 192typedef struct coro_cctx
193{
221 struct coro_cctx *next; 194 struct coro_cctx *next;
222 195
223 /* the stack */ 196 /* the stack */
224 void *sptr; 197 void *sptr;
225 size_t ssize; 198 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 216 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 218};
246 219
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 221typedef struct
222{
249 SV *defsv; 223 SV *defsv;
250 AV *defav; 224 AV *defav;
251 SV *errsv; 225 SV *errsv;
252 SV *irsgv; 226 SV *irsgv;
253#define VAR(name,type) type name; 227#define VAR(name,type) type name;
… …
257 231
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 233
260/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
261struct coro { 235struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 236 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 237 coro_cctx *cctx;
264 238
265 /* process data */ 239 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 241 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
268 243
269 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
273 249
274 /* statistics */ 250 /* statistics */
275 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
276 252
277 /* coro process data */ 253 /* coro process data */
… …
285 struct coro *next, *prev; 261 struct coro *next, *prev;
286}; 262};
287 263
288typedef struct coro *Coro__State; 264typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 265typedef struct coro *Coro__State_or_hashref;
266
267/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
290 272
291/** Coro ********************************************************************/ 273/** Coro ********************************************************************/
292 274
293#define PRIO_MAX 3 275#define PRIO_MAX 3
294#define PRIO_HIGH 1 276#define PRIO_HIGH 1
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 378
397 return 0; 379 return 0;
398} 380}
399 381
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 383#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 384
403static MGVTBL coro_cv_vtbl = { 385static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 386 0, 0, 0, 0,
405 coro_cv_free 387 coro_cv_free
406}; 388};
407 389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
408#define CORO_MAGIC(sv, type) \ 395#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 396 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 397 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 398 : 0)
414 399
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#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) 401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 402
418INLINE struct coro * 403INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
420{ 405{
421 HV *stash; 406 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
440} 425}
441 426
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 432
444/* the next two functions merely cache the padlists */ 433/* the next two functions merely cache the padlists */
445static void 434static void
446get_padlist (pTHX_ CV *cv) 435get_padlist (pTHX_ CV *cv)
447{ 436{
… …
514 CvPADLIST (cv) = (AV *)POPs; 503 CvPADLIST (cv) = (AV *)POPs;
515 } 504 }
516 505
517 PUTBACK; 506 PUTBACK;
518 } 507 }
508
509 slf_frame = c->slf_frame;
510 coro_throw = c->throw;
519} 511}
520 512
521static void 513static void
522save_perl (pTHX_ Coro__State c) 514save_perl (pTHX_ Coro__State c)
523{ 515{
516 c->throw = coro_throw;
517 c->slf_frame = slf_frame;
518
524 { 519 {
525 dSP; 520 dSP;
526 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 522 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 523 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 590 #undef VAR
596 } 591 }
597} 592}
598 593
599/* 594/*
600 * allocate various perl stacks. This is an exact copy 595 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 596 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 597 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 598 * not usually need a lot of stackspace.
604 */ 599 */
605#if CORO_PREFER_PERL_FUNCTIONS 600#if CORO_PREFER_PERL_FUNCTIONS
… …
712#endif 707#endif
713 } 708 }
714 } 709 }
715 710
716 return rss; 711 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 712}
745 713
746/** coroutine stack handling ************************************************/ 714/** coroutine stack handling ************************************************/
747 715
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 716static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 802
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 804}
837 805
838static void 806static void
807prepare_nop (pTHX_ struct coro_transfer_args *ta)
808{
809 /* kind of mega-hacky, but works */
810 ta->next = ta->prev = (struct coro *)ta;
811}
812
813static int
814slf_check_nop (pTHX_ struct CoroSLF *frame)
815{
816 return 0;
817}
818
819static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 820coro_setup (pTHX_ struct coro *coro)
840{ 821{
841 /* 822 /*
842 * emulate part of the perl startup here. 823 * emulate part of the perl startup here.
843 */ 824 */
… …
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN; 864 SPAGAIN;
884 } 865 }
885 866
886 /* this newly created coroutine might be run on an existing cctx which most 867 /* 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, 868 * 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 */ 869 */
890 SLF_HEAD; 870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
872
873 coro_throw = coro->throw;
891} 874}
892 875
893static void 876static void
894coro_destruct (pTHX_ struct coro *coro) 877coro_destruct (pTHX_ struct coro *coro)
895{ 878{
… …
919 902
920 SvREFCNT_dec (PL_diehook); 903 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 904 SvREFCNT_dec (PL_warnhook);
922 905
923 SvREFCNT_dec (coro->saved_deffh); 906 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 907 SvREFCNT_dec (coro_throw);
925 908
926 coro_destruct_stacks (aTHX); 909 coro_destruct_stacks (aTHX);
927} 910}
928 911
929INLINE void 912INLINE void
… …
939static int 922static int
940runops_trace (pTHX) 923runops_trace (pTHX)
941{ 924{
942 COP *oldcop = 0; 925 COP *oldcop = 0;
943 int oldcxix = -2; 926 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx; 928 coro_cctx *cctx = coro->cctx;
946 929
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 931 {
949 PERL_ASYNC_CHECK (); 932 PERL_ASYNC_CHECK ();
… …
1059 TAINT_NOT; 1042 TAINT_NOT;
1060 return 0; 1043 return 0;
1061} 1044}
1062 1045
1063static void 1046static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1065{ 1048{
1066 ta->prev = (struct coro *)cctx; 1049 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1050 ta->next = 0;
1068} 1051}
1069 1052
… …
1098 1081
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1082/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1083INLINE void
1101transfer_tail (pTHX) 1084transfer_tail (pTHX)
1102{ 1085{
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); 1086 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} 1087}
1119 1088
1120/* 1089/*
1121 * this is a _very_ stripped down perl interpreter ;) 1090 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1091 */
… …
1129# endif 1098# endif
1130#endif 1099#endif
1131 { 1100 {
1132 dTHX; 1101 dTHX;
1133 1102
1134 /* we are the alternative tail to pp_set_stacklevel */ 1103 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1104 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1105 /* PL_nop = PL_nop->op_next */
1140 1106
1141 /* inject a fake subroutine call to cctx_init */ 1107 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1108 cctx_prepare (aTHX_ (coro_cctx *)arg);
1143 1109
1144 /* cctx_run is the alternative tail of transfer() */ 1110 /* cctx_run is the alternative tail of transfer() */
… …
1305/** coroutine switching *****************************************************/ 1271/** coroutine switching *****************************************************/
1306 1272
1307static void 1273static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1274transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1275{
1276 /* TODO: throwing up here is considered harmful */
1277
1310 if (expect_true (prev != next)) 1278 if (expect_true (prev != next))
1311 { 1279 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1280 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"); 1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1282
1315 if (expect_false (next->flags & CF_RUNNING)) 1283 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"); 1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1285
1318 if (expect_false (next->flags & CF_DESTROYED)) 1286 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"); 1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1288
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1289#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1290 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"); 1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1292#endif
1325 } 1293 }
1326} 1294}
1327 1295
1328/* always use the TRANSFER macro */ 1296/* always use the TRANSFER macro */
1329static void NOINLINE 1297static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1299{
1332 dSTACKLEVEL; 1300 dSTACKLEVEL;
1333 1301
1334 /* sometimes transfer is only called to set idle_sp */ 1302 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1303 if (expect_false (!next))
1336 { 1304 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1307 }
1340 else if (expect_true (prev != next)) 1308 else if (expect_true (prev != next))
1341 { 1309 {
1342 coro_cctx *prev__cctx; 1310 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1317 prev->flags |= CF_RUNNING;
1350 } 1318 }
1351 1319
1352 prev->flags &= ~CF_RUNNING; 1320 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1321 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1322
1357 /* first get rid of the old state */ 1323 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1324 save_perl (aTHX_ prev);
1359 1325
1360 if (expect_false (next->flags & CF_NEW)) 1326 if (expect_false (next->flags & CF_NEW))
… …
1369 1335
1370 prev__cctx = prev->cctx; 1336 prev__cctx = prev->cctx;
1371 1337
1372 /* possibly untie and reuse the cctx */ 1338 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1339 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1340 prev__cctx->idle_sp == (void *)stacklevel
1375 && !(prev__cctx->flags & CC_TRACE) 1341 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1342 && !force_cctx
1377 )) 1343 ))
1378 { 1344 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1359 ++next->usecount;
1394 1360
1395 if (expect_true (!next->cctx)) 1361 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1362 next->cctx = cctx_get (aTHX);
1397 1363
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)) 1364 if (expect_false (prev__cctx != next->cctx))
1402 { 1365 {
1403 prev__cctx->top_env = PL_top_env; 1366 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1367 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1382{
1420 if (coro->flags & CF_DESTROYED) 1383 if (coro->flags & CF_DESTROYED)
1421 return 0; 1384 return 0;
1422 1385
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro);
1388
1423 coro->flags |= CF_DESTROYED; 1389 coro->flags |= CF_DESTROYED;
1424 1390
1425 if (coro->flags & CF_READY) 1391 if (coro->flags & CF_READY)
1426 { 1392 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1393 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1394 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1395 --coro_nready;
1431 UNLOCK;
1432 } 1396 }
1433 else 1397 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1399
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1401 {
1438 struct coro temp; 1402 struct coro temp;
1439 1403
1440 if (coro->flags & CF_RUNNING) 1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1405
1443 save_perl (aTHX_ &temp); 1406 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1407 load_perl (aTHX_ coro);
1445 1408
1446 coro_destruct (aTHX_ coro); 1409 coro_destruct (aTHX_ coro);
… …
1497# define MGf_DUP 0 1460# define MGf_DUP 0
1498#endif 1461#endif
1499}; 1462};
1500 1463
1501static void 1464static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1465prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1466{
1504 ta->prev = SvSTATE (prev_sv); 1467 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1468 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1469 TRANSFER_CHECK (*ta);
1507} 1470}
1508 1471
1509static void 1472static void
1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv) 1473api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1474{
1512 struct transfer_args ta; 1475 struct coro_transfer_args ta;
1513 1476
1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1477 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515 TRANSFER (ta, 1); 1478 TRANSFER (ta, 1);
1516} 1479}
1517 1480
1518/** Coro ********************************************************************/ 1481/** Coro ********************************************************************/
1519 1482
1520static void 1483INLINE void
1521coro_enq (pTHX_ SV *coro_sv) 1484coro_enq (pTHX_ struct coro *coro)
1522{ 1485{
1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524} 1487}
1525 1488
1526static SV * 1489INLINE SV *
1527coro_deq (pTHX) 1490coro_deq (pTHX)
1528{ 1491{
1529 int prio; 1492 int prio;
1530 1493
1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1550 if (coro->flags & CF_READY) 1513 if (coro->flags & CF_READY)
1551 return 0; 1514 return 0;
1552 1515
1553 coro->flags |= CF_READY; 1516 coro->flags |= CF_READY;
1554 1517
1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook; 1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559 1520
1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1521 coro_enq (aTHX_ coro);
1561 ++coro_nready; 1522 ++coro_nready;
1562 1523
1563 UNLOCK;
1564
1565 if (sv_hook) 1524 if (sv_hook)
1566 { 1525 {
1567 dSP; 1526 dSP;
1568 1527
1569 ENTER; 1528 ENTER;
… …
1589{ 1548{
1590 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1549 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591} 1550}
1592 1551
1593INLINE void 1552INLINE void
1594prepare_schedule (pTHX_ struct transfer_args *ta) 1553prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1595{ 1554{
1596 SV *prev_sv, *next_sv; 1555 SV *prev_sv, *next_sv;
1597 1556
1598 for (;;) 1557 for (;;)
1599 { 1558 {
1600 LOCK;
1601 next_sv = coro_deq (aTHX); 1559 next_sv = coro_deq (aTHX);
1602 1560
1603 /* nothing to schedule: call the idle handler */ 1561 /* nothing to schedule: call the idle handler */
1604 if (expect_false (!next_sv)) 1562 if (expect_false (!next_sv))
1605 { 1563 {
1606 dSP; 1564 dSP;
1607 UNLOCK;
1608 1565
1609 ENTER; 1566 ENTER;
1610 SAVETMPS; 1567 SAVETMPS;
1611 1568
1612 PUSHMARK (SP); 1569 PUSHMARK (SP);
… …
1617 FREETMPS; 1574 FREETMPS;
1618 LEAVE; 1575 LEAVE;
1619 continue; 1576 continue;
1620 } 1577 }
1621 1578
1622 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE_hv (next_sv);
1623 1580
1624 /* cannot transfer to destroyed coros, skip and look for next */ 1581 /* cannot transfer to destroyed coros, skip and look for next */
1625 if (expect_false (ta->next->flags & CF_DESTROYED)) 1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1626 { 1583 {
1627 UNLOCK;
1628 SvREFCNT_dec (next_sv); 1584 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */ 1585 /* coro_nready has already been taken care of by destroy */
1630 continue; 1586 continue;
1631 } 1587 }
1632 1588
1633 --coro_nready; 1589 --coro_nready;
1634 UNLOCK;
1635 break; 1590 break;
1636 } 1591 }
1637 1592
1638 /* free this only after the transfer */ 1593 /* free this only after the transfer */
1639 prev_sv = SvRV (coro_current); 1594 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv); 1595 ta->prev = SvSTATE_hv (prev_sv);
1641 TRANSFER_CHECK (*ta); 1596 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY; 1598 ta->next->flags &= ~CF_READY;
1644 SvRV_set (coro_current, next_sv); 1599 SvRV_set (coro_current, next_sv);
1645 1600
1646 LOCK;
1647 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1648 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1649 UNLOCK;
1650} 1603}
1651 1604
1652INLINE void 1605INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta) 1606prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654{ 1607{
1655 api_ready (aTHX_ coro_current); 1608 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta); 1609 prepare_schedule (aTHX_ ta);
1657} 1610}
1658 1611
1659static void 1612INLINE void
1660prepare_cede_notself (pTHX_ struct transfer_args *ta) 1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661{ 1614{
1662 SV *prev = SvRV (coro_current); 1615 SV *prev = SvRV (coro_current);
1663 1616
1664 if (coro_nready) 1617 if (coro_nready)
1665 { 1618 {
1666 prepare_schedule (aTHX_ ta); 1619 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev); 1620 api_ready (aTHX_ prev);
1668 } 1621 }
1669 else 1622 else
1670 ta->prev = ta->next = SvSTATE (prev); 1623 prepare_nop (aTHX_ ta);
1671} 1624}
1672 1625
1673static void 1626static void
1674api_schedule (pTHX) 1627api_schedule (pTHX)
1675{ 1628{
1676 struct transfer_args ta; 1629 struct coro_transfer_args ta;
1677 1630
1678 prepare_schedule (aTHX_ &ta); 1631 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1); 1632 TRANSFER (ta, 1);
1680} 1633}
1681 1634
1682static int 1635static int
1683api_cede (pTHX) 1636api_cede (pTHX)
1684{ 1637{
1685 struct transfer_args ta; 1638 struct coro_transfer_args ta;
1686 1639
1687 prepare_cede (aTHX_ &ta); 1640 prepare_cede (aTHX_ &ta);
1688 1641
1689 if (expect_true (ta.prev != ta.next)) 1642 if (expect_true (ta.prev != ta.next))
1690 { 1643 {
… …
1698static int 1651static int
1699api_cede_notself (pTHX) 1652api_cede_notself (pTHX)
1700{ 1653{
1701 if (coro_nready) 1654 if (coro_nready)
1702 { 1655 {
1703 struct transfer_args ta; 1656 struct coro_transfer_args ta;
1704 1657
1705 prepare_cede_notself (aTHX_ &ta); 1658 prepare_cede_notself (aTHX_ &ta);
1706 TRANSFER (ta, 1); 1659 TRANSFER (ta, 1);
1707 return 1; 1660 return 1;
1708 } 1661 }
… …
1718 if (flags & CC_TRACE) 1671 if (flags & CC_TRACE)
1719 { 1672 {
1720 if (!coro->cctx) 1673 if (!coro->cctx)
1721 coro->cctx = cctx_new_run (); 1674 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE)) 1675 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack"); 1676 croak ("cannot enable tracing on coroutine with custom stack,");
1724 1677
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 } 1679 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 { 1681 {
… …
1733 else 1686 else
1734 coro->slot->runops = RUNOPS_DEFAULT; 1687 coro->slot->runops = RUNOPS_DEFAULT;
1735 } 1688 }
1736} 1689}
1737 1690
1738#if 0 1691/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */
1693
1694static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1695static const CV *slf_cv;
1696static SV **slf_argv;
1697static int slf_argc, slf_arga; /* count, allocated */
1698static I32 slf_ax; /* top of stack, for restore */
1699
1700/* this restores the stack in the case we patched the entersub, to */
1701/* recreate the stack frame as perl will on following calls */
1702/* since entersub cleared the stack */
1703static OP *
1704pp_restore (pTHX)
1705{
1706 int i;
1707 SV **SP = PL_stack_base + slf_ax;
1708
1709 PUSHMARK (SP);
1710
1711 EXTEND (SP, slf_argc + 1);
1712
1713 for (i = 0; i < slf_argc; ++i)
1714 PUSHs (sv_2mortal (slf_argv [i]));
1715
1716 PUSHs ((SV *)CvGV (slf_cv));
1717
1718 RETURNOP (slf_restore.op_first);
1719}
1720
1739static int 1721static void
1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1741{ 1723{
1742 AV *padlist; 1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1743 AV *av = (AV *)mg->mg_obj;
1744
1745 abort ();
1746
1747 return 0;
1748} 1725}
1749 1726
1750static MGVTBL coro_gensub_vtbl = { 1727static void
1751 0, 0, 0, 0, 1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752 coro_gensub_free 1729{
1753}; 1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1754#endif 1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{
1740 SV **arg = (SV **)slf_frame.data;
1741
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1743}
1744
1745static void
1746slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1747{
1748 if (items != 2)
1749 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1750
1751 frame->prepare = slf_prepare_transfer;
1752 frame->check = slf_check_nop;
1753 frame->data = (void *)arg; /* let's hope it will stay valid */
1754}
1755
1756static void
1757slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1758{
1759 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop;
1761}
1762
1763static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{
1766 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop;
1768}
1769
1770static void
1771slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772{
1773 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop;
1775}
1776
1777/* we hijack an hopefully unused CV flag for our purposes */
1778#define CVf_SLF 0x4000
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */
1863 if (expect_false (coro_throw))
1864 {
1865 SV *exception = sv_2mortal (coro_throw);
1866
1867 coro_throw = 0;
1868 sv_setsv (ERRSV, exception);
1869 croak (0);
1870 }
1871
1872 return NORMAL;
1873}
1874
1875static void
1876api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1877{
1878 int i;
1879 SV **arg = PL_stack_base + ax;
1880 int items = PL_stack_sp - arg + 1;
1881
1882 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1883
1884 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1885 && PL_op->op_ppaddr != pp_slf)
1886 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1887
1888 CvFLAGS (cv) |= CVf_SLF;
1889 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1890 slf_cv = cv;
1891
1892 /* we patch the op, and then re-run the whole call */
1893 /* we have to put the same argument on the stack for this to work */
1894 /* and this will be done by pp_restore */
1895 slf_restore.op_next = (OP *)&slf_restore;
1896 slf_restore.op_type = OP_CUSTOM;
1897 slf_restore.op_ppaddr = pp_restore;
1898 slf_restore.op_first = PL_op;
1899
1900 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1901
1902 if (PL_op->op_flags & OPf_STACKED)
1903 {
1904 if (items > slf_arga)
1905 {
1906 slf_arga = items;
1907 free (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *));
1909 }
1910
1911 slf_argc = items;
1912
1913 for (i = 0; i < items; ++i)
1914 slf_argv [i] = SvREFCNT_inc (arg [i]);
1915 }
1916 else
1917 slf_argc = 0;
1918
1919 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1921
1922 PL_op = (OP *)&slf_restore;
1923}
1755 1924
1756/*****************************************************************************/ 1925/*****************************************************************************/
1757/* PerlIO::cede */ 1926/* PerlIO::cede */
1758 1927
1759typedef struct 1928typedef struct
… …
1827 PerlIOBuf_get_cnt, 1996 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt, 1997 PerlIOBuf_set_ptrcnt,
1829}; 1998};
1830 1999
1831/*****************************************************************************/ 2000/*****************************************************************************/
2001/* Coro::Semaphore */
1832 2002
1833static const CV *slf_cv; /* for quick consistency check */ 2003static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{
2006 SV *count_sv = AvARRAY (av)[0];
2007 IV count = SvIVX (count_sv);
1834 2008
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ 2009 count += adjust;
1836static SV *slf_arg0; 2010 SvIVX (count_sv) = count;
1837static SV *slf_arg1;
1838 2011
1839/* this restores the stack in the case we patched the entersub, to */ 2012 /* now wake up as many waiters as are expected to lock */
1840/* recreate the stack frame as perl will on following calls */ 2013 while (count > 0 && AvFILLp (av) > 0)
1841/* since entersub cleared the stack */ 2014 {
2015 SV *cb;
2016
2017 /* swap first two elements so we can shift a waiter */
2018 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av);
2021
2022 if (SvOBJECT (cb))
2023 api_ready (aTHX_ cb);
2024 else
2025 croak ("callbacks not yet supported");
2026
2027 SvREFCNT_dec (cb);
2028
2029 --count;
2030 }
2031}
2032
2033static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2035{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038}
2039
2040static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2042{
2043 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0];
2045
2046 if (SvIVX (count_sv) > 0)
2047 {
2048 SvSTATE_current->on_destroy = 0;
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2050 return 0;
2051 }
2052 else
2053 {
2054 int i;
2055 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */
2058
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current))
2061 return 1;
2062
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064 return 1;
2065 }
2066}
2067
2068static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{
2071 AV *av = (AV *)SvRV (arg [0]);
2072
2073 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 {
2075 frame->data = (void *)av;
2076 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079 else
2080 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 }
2091
2092 frame->check = slf_check_semaphore_down;
2093
2094}
2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
1842static OP * 2104static SV *
1843pp_restore (pTHX) 2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1844{ 2106{
1845 dSP; 2107 CV *cv = (CV *)newSV (0);
1846 2108
1847 PUSHMARK (SP); 2109 sv_upgrade ((SV *)cv, SVt_PVCV);
1848 2110
1849 EXTEND (SP, 3); 2111 CvANON_on (cv);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2112 CvISXSUB_on (cv);
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2113 CvXSUB (cv) = xsub;
1852 PUSHs ((SV *)CvGV (slf_cv)); 2114 GENSUB_ARG = arg;
1853 2115
1854 RETURNOP (slf_restore.op_first); 2116 return newRV_noinc ((SV *)cv);
1855} 2117}
1856 2118
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2119/*****************************************************************************/
2120/* Coro::AIO */
1858 2121
1859enum { 2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
1860 CORO_SLF_CUSTOM = 0, 2123
1861 CORO_SLF_SET_STACKLEVEL = 1, 2124/* helper storage struct */
1862 CORO_SLF_TRANSFER = 2 2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
1863}; 2131};
1864 2132
1865/* declare prototype */ 2133static void
1866XS(XS_Coro__State__set_stacklevel); 2134coro_aio_callback (pTHX_ CV *cv)
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{ 2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
1877 dSP; 2195 dSP;
1878 struct transfer_args ta; 2196 int i;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 2197
1884 /* do a quick consistency check on the "function" object, and if it isn't */ 2198 EXTEND (SP, AvFILLp (state) + 1);
1885 /* for us, divert to the real entersub */ 2199 for (i = 0; i <= AvFILLp (state); ++i)
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) 2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888 2201
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2202 PUTBACK;
2203 }
1901 2204
1902 if (!ix) 2205 return 0;
1903 { 2206}
1904 slf = (struct CoroSLF *)CvSTART (GvCV (*sp)); 2207
1905 ix = slf->prepare (aTHX_ arg, items); 2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
1906 } 2220 {
2221 dSP;
1907 2222
1908 switch (ix) 2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
1909 { 2238 }
1910 case CORO_SLF_SET_STACKLEVEL:
1911 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912 break;
1913 2239
1914 case CORO_SLF_TRANSFER: 2240 /* now call the original request */
1915 if (items != 2) 2241 {
1916 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); 2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
1917 2245
1918 prepare_transfer (aTHX_ &ta, arg [0], arg [1]); 2246 PUSHMARK (SP);
1919 break;
1920 2247
1921 case CORO_SLF_SCHEDULE: 2248 /* first push all args to the stack */
1922 prepare_schedule (aTHX_ &ta); 2249 EXTEND (SP, items + 1);
1923 break;
1924 2250
1925 case CORO_SLF_CEDE: 2251 for (i = 0; i < items; ++i)
1926 prepare_cede (aTHX_ &ta); 2252 PUSHs (arg [i]);
1927 break;
1928 2253
1929 case CORO_SLF_CEDE_NOTSELF: 2254 /* now push the callback closure */
1930 prepare_cede_notself (aTHX_ &ta); 2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1931 break;
1932 2256
1933 default: 2257 /* now call the AIO function - we assume our request is uncancelable */
1934 abort ();
1935 }
1936
1937 do
1938 TRANSFER (ta, 0);
1939 while (slf && slf->check (aTHX));
1940
1941 SPAGAIN;
1942
1943 PUTBACK; 2258 PUTBACK;
1944 SLF_TAIL; 2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
1945 SPAGAIN; 2260 }
1946 RETURN;
1947}
1948 2261
1949static void 2262 /* now that the requets is going, we loop toll we have a result */
1950coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2263 frame->data = (void *)state;
1951{ 2264 frame->prepare = prepare_schedule;
1952 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2265 frame->check = slf_check_aio_req;
1953
1954 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1955 slf_cv = cv;
1956
1957 /* we patch the op, and then re-run the whole call */
1958 /* we have to put the same argument on the stack for this to work */
1959 /* and this will be done by pp_restore */
1960 slf_restore.op_next = (OP *)&slf_restore;
1961 slf_restore.op_type = OP_NULL;
1962 slf_restore.op_ppaddr = pp_restore;
1963 slf_restore.op_first = PL_op;
1964
1965 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1966 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1967
1968 PL_op->op_ppaddr = pp_slf;
1969 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1970
1971 PL_op = (OP *)&slf_restore;
1972} 2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
1973 2279
1974MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1975 2281
1976PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
1977 2283
1978BOOT: 2284BOOT:
1979{ 2285{
1980#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
1981 MUTEX_INIT (&coro_lock);
1982# if CORO_PTHREAD 2287# if CORO_PTHREAD
1983 coro_thx = PERL_GET_CONTEXT; 2288 coro_thx = PERL_GET_CONTEXT;
1984# endif 2289# endif
1985#endif 2290#endif
1986 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
… …
2007 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
2008 2313
2009 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
2010 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
2011 2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2328
2012 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
2013 coroapi.rev = CORO_API_REVISION; 2330 coroapi.rev = CORO_API_REVISION;
2331
2014 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
2333
2334 coroapi.sv_state = SvSTATE_;
2335 coroapi.execute_slf = api_execute_slf;
2336 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself;
2015 2340
2016 { 2341 {
2017 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018 2343
2019 if (!svp) croak ("Time::HiRes is required"); 2344 if (!svp) croak ("Time::HiRes is required");
… …
2054 OUTPUT: 2379 OUTPUT:
2055 RETVAL 2380 RETVAL
2056 2381
2057void 2382void
2058_set_stacklevel (...) 2383_set_stacklevel (...)
2059 ALIAS: 2384 CODE:
2060 _set_stacklevel = CORO_SLF_SET_STACKLEVEL 2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2061 Coro::State::transfer = CORO_SLF_TRANSFER 2386
2062 Coro::schedule = CORO_SLF_SCHEDULE 2387void
2063 Coro::cede = CORO_SLF_CEDE 2388transfer (...)
2064 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF 2389 PROTOTYPE: $$
2065 CODE: 2390 CODE:
2066 coro_slf_patch (aTHX_ cv, ix, &ST (0), items); 2391 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2067 2392
2068bool 2393bool
2069_destroy (SV *coro_sv) 2394_destroy (SV *coro_sv)
2070 CODE: 2395 CODE:
2071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2078 CODE: 2403 CODE:
2079 _exit (code); 2404 _exit (code);
2080 2405
2081int 2406int
2082cctx_stacksize (int new_stacksize = 0) 2407cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$
2083 CODE: 2409 CODE:
2084 RETVAL = cctx_stacksize; 2410 RETVAL = cctx_stacksize;
2085 if (new_stacksize) 2411 if (new_stacksize)
2086 { 2412 {
2087 cctx_stacksize = new_stacksize; 2413 cctx_stacksize = new_stacksize;
… …
2090 OUTPUT: 2416 OUTPUT:
2091 RETVAL 2417 RETVAL
2092 2418
2093int 2419int
2094cctx_max_idle (int max_idle = 0) 2420cctx_max_idle (int max_idle = 0)
2421 PROTOTYPE: ;$
2095 CODE: 2422 CODE:
2096 RETVAL = cctx_max_idle; 2423 RETVAL = cctx_max_idle;
2097 if (max_idle > 1) 2424 if (max_idle > 1)
2098 cctx_max_idle = max_idle; 2425 cctx_max_idle = max_idle;
2099 OUTPUT: 2426 OUTPUT:
2100 RETVAL 2427 RETVAL
2101 2428
2102int 2429int
2103cctx_count () 2430cctx_count ()
2431 PROTOTYPE:
2104 CODE: 2432 CODE:
2105 RETVAL = cctx_count; 2433 RETVAL = cctx_count;
2106 OUTPUT: 2434 OUTPUT:
2107 RETVAL 2435 RETVAL
2108 2436
2109int 2437int
2110cctx_idle () 2438cctx_idle ()
2439 PROTOTYPE:
2111 CODE: 2440 CODE:
2112 RETVAL = cctx_idle; 2441 RETVAL = cctx_idle;
2113 OUTPUT: 2442 OUTPUT:
2114 RETVAL 2443 RETVAL
2115 2444
2116void 2445void
2117list () 2446list ()
2447 PROTOTYPE:
2118 PPCODE: 2448 PPCODE:
2119{ 2449{
2120 struct coro *coro; 2450 struct coro *coro;
2121 for (coro = coro_first; coro; coro = coro->next) 2451 for (coro = coro_first; coro; coro = coro->next)
2122 if (coro->hv) 2452 if (coro->hv)
… …
2184 2514
2185void 2515void
2186throw (Coro::State self, SV *throw = &PL_sv_undef) 2516throw (Coro::State self, SV *throw = &PL_sv_undef)
2187 PROTOTYPE: $;$ 2517 PROTOTYPE: $;$
2188 CODE: 2518 CODE:
2519{
2520 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw;
2189 SvREFCNT_dec (self->throw); 2522 SvREFCNT_dec (*throwp);
2190 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524}
2191 2525
2192void 2526void
2193api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$
2194 C_ARGS: aTHX_ coro, flags 2529 C_ARGS: aTHX_ coro, flags
2195 2530
2196SV * 2531SV *
2197has_cctx (Coro::State coro) 2532has_cctx (Coro::State coro)
2198 PROTOTYPE: $ 2533 PROTOTYPE: $
… …
2223 OUTPUT: 2558 OUTPUT:
2224 RETVAL 2559 RETVAL
2225 2560
2226void 2561void
2227force_cctx () 2562force_cctx ()
2563 PROTOTYPE:
2228 CODE: 2564 CODE:
2229 struct coro *coro = SvSTATE (coro_current);
2230 coro->cctx->idle_sp = 0; 2565 SvSTATE_current->cctx->idle_sp = 0;
2231 2566
2232void 2567void
2233swap_defsv (Coro::State self) 2568swap_defsv (Coro::State self)
2234 PROTOTYPE: $ 2569 PROTOTYPE: $
2235 ALIAS: 2570 ALIAS:
2236 swap_defav = 1 2571 swap_defav = 1
2237 CODE: 2572 CODE:
2238 if (!self->slot) 2573 if (!self->slot)
2239 croak ("cannot swap state with coroutine that has no saved state"); 2574 croak ("cannot swap state with coroutine that has no saved state,");
2240 else 2575 else
2241 { 2576 {
2242 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2577 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2244 2579
2245 SV *tmp = *src; *src = *dst; *dst = tmp; 2580 SV *tmp = *src; *src = *dst; *dst = tmp;
2246 } 2581 }
2582
2247 2583
2248MODULE = Coro::State PACKAGE = Coro 2584MODULE = Coro::State PACKAGE = Coro
2249 2585
2250BOOT: 2586BOOT:
2251{ 2587{
… …
2286 SvREADONLY_on (sv); 2622 SvREADONLY_on (sv);
2287 } 2623 }
2288} 2624}
2289 2625
2290void 2626void
2627schedule (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630
2631void
2632cede (...)
2633 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635
2636void
2637cede_notself (...)
2638 CODE:
2639 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2640
2641void
2291_set_current (SV *current) 2642_set_current (SV *current)
2292 PROTOTYPE: $ 2643 PROTOTYPE: $
2293 CODE: 2644 CODE:
2294 SvREFCNT_dec (SvRV (coro_current)); 2645 SvREFCNT_dec (SvRV (coro_current));
2295 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 2646 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2296 2647
2297void 2648void
2298_set_readyhook (SV *hook) 2649_set_readyhook (SV *hook)
2299 PROTOTYPE: $ 2650 PROTOTYPE: $
2300 CODE: 2651 CODE:
2301 LOCK;
2302 SvREFCNT_dec (coro_readyhook); 2652 SvREFCNT_dec (coro_readyhook);
2303 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304 UNLOCK;
2305 2654
2306int 2655int
2307prio (Coro::State coro, int newprio = 0) 2656prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$
2308 ALIAS: 2658 ALIAS:
2309 nice = 1 2659 nice = 1
2310 CODE: 2660 CODE:
2311{ 2661{
2312 RETVAL = coro->prio; 2662 RETVAL = coro->prio;
… …
2344# for async_pool speedup 2694# for async_pool speedup
2345void 2695void
2346_pool_1 (SV *cb) 2696_pool_1 (SV *cb)
2347 CODE: 2697 CODE:
2348{ 2698{
2349 struct coro *coro = SvSTATE (coro_current);
2350 HV *hv = (HV *)SvRV (coro_current); 2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2351 AV *defav = GvAV (PL_defgv); 2701 AV *defav = GvAV (PL_defgv);
2352 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2353 AV *invoke_av; 2703 AV *invoke_av;
2354 int i, len; 2704 int i, len;
2355 2705
… …
2376 { 2726 {
2377 av_fill (defav, len - 1); 2727 av_fill (defav, len - 1);
2378 for (i = 0; i < len; ++i) 2728 for (i = 0; i < len; ++i)
2379 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2380 } 2730 }
2381
2382 SvREFCNT_dec (invoke);
2383} 2731}
2384 2732
2385void 2733void
2386_pool_2 (SV *cb) 2734_pool_2 (SV *cb)
2387 CODE: 2735 CODE:
2388{ 2736{
2389 struct coro *coro = SvSTATE (coro_current); 2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv);
2390 2739
2391 sv_setsv (cb, &PL_sv_undef); 2740 sv_setsv (cb, &PL_sv_undef);
2392 2741
2393 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2394 coro->saved_deffh = 0; 2743 coro->saved_deffh = 0;
… …
2401 SvREFCNT_dec (old); 2750 SvREFCNT_dec (old);
2402 croak ("\3async_pool terminate\2\n"); 2751 croak ("\3async_pool terminate\2\n");
2403 } 2752 }
2404 2753
2405 av_clear (GvAV (PL_defgv)); 2754 av_clear (GvAV (PL_defgv));
2406 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2755 hv_store (hv, "desc", sizeof ("desc") - 1,
2407 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2408 2757
2409 coro->prio = 0; 2758 coro->prio = 0;
2410 2759
2411 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2412 api_trace (aTHX_ coro_current, 0); 2761 api_trace (aTHX_ coro_current, 0);
2413 2762
2414 av_push (av_async_pool, newSVsv (coro_current)); 2763 av_push (av_async_pool, newSVsv (coro_current));
2415} 2764}
2416 2765
2417#if 0
2418 2766
2419void 2767MODULE = Coro::State PACKAGE = PerlIO::cede
2420_generator_call (...) 2768
2421 PROTOTYPE: @ 2769BOOT:
2422 PPCODE: 2770 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2423 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2771
2424 xxxx 2772
2425 abort (); 2773MODULE = Coro::State PACKAGE = Coro::Semaphore
2426 2774
2427SV * 2775SV *
2428gensub (SV *sub, ...) 2776new (SV *klass, SV *count_ = 0)
2429 PROTOTYPE: &;@ 2777 CODE:
2430 CODE:
2431{ 2778{
2432 struct coro *coro; 2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2433 MAGIC *mg; 2780 AV *av = newAV ();
2434 CV *xcv; 2781 SV **ary;
2435 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2436 int i;
2437 2782
2438 CvGV (ncv) = CvGV (cv); 2783 /* unfortunately, building manually saves memory */
2439 CvFILE (ncv) = CvFILE (cv); 2784 Newx (ary, 2, SV *);
2785 AvALLOC (av) = ary;
2786 AvARRAY (av) = ary;
2787 AvMAX (av) = 1;
2788 AvFILLp (av) = 0;
2789 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2440 2790
2441 Newz (0, coro, 1, struct coro); 2791 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2442 coro->args = newAV ();
2443 coro->flags = CF_NEW;
2444
2445 av_extend (coro->args, items - 1);
2446 for (i = 1; i < items; i++)
2447 av_push (coro->args, newSVsv (ST (i)));
2448
2449 CvISXSUB_on (ncv);
2450 CvXSUBANY (ncv).any_ptr = (void *)coro;
2451
2452 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2453
2454 CvXSUB (ncv) = CvXSUB (xcv);
2455 CvANON_on (ncv);
2456
2457 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2458 RETVAL = newRV_noinc ((SV *)ncv);
2459} 2792}
2460 OUTPUT: 2793 OUTPUT:
2461 RETVAL 2794 RETVAL
2462 2795
2463#endif 2796SV *
2464 2797count (SV *self)
2465 2798 CODE:
2466MODULE = Coro::State PACKAGE = Coro::AIO 2799 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2800 OUTPUT:
2801 RETVAL
2467 2802
2468void 2803void
2469_get_state (SV *self) 2804up (SV *self, int adjust = 1)
2470 PPCODE: 2805 ALIAS:
2471{ 2806 adjust = 1
2472 AV *defav = GvAV (PL_defgv); 2807 CODE:
2473 AV *av = newAV (); 2808 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2474 int i;
2475 SV *data_sv = newSV (sizeof (struct io_state));
2476 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2477 SvCUR_set (data_sv, sizeof (struct io_state));
2478 SvPOK_only (data_sv);
2479
2480 data->errorno = errno;
2481 data->laststype = PL_laststype;
2482 data->laststatval = PL_laststatval;
2483 data->statcache = PL_statcache;
2484
2485 av_extend (av, AvFILLp (defav) + 1 + 1);
2486
2487 for (i = 0; i <= AvFILLp (defav); ++i)
2488 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2489
2490 av_push (av, data_sv);
2491
2492 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2493
2494 api_ready (aTHX_ self);
2495}
2496 2809
2497void 2810void
2498_set_state (SV *state) 2811down (SV *self)
2499 PROTOTYPE: $ 2812 CODE:
2500 PPCODE: 2813 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2814
2815void
2816try (SV *self)
2817 PPCODE:
2501{ 2818{
2502 AV *av = (AV *)SvRV (state); 2819 AV *av = (AV *)SvRV (self);
2503 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2820 SV *count_sv = AvARRAY (av)[0];
2821 IV count = SvIVX (count_sv);
2822
2823 if (count > 0)
2824 {
2825 --count;
2826 SvIVX (count_sv) = count;
2827 XSRETURN_YES;
2828 }
2829 else
2830 XSRETURN_NO;
2831}
2832
2833void
2834waiters (SV *self)
2835 CODE:
2836{
2837 AV *av = (AV *)SvRV (self);
2838
2839 if (GIMME_V == G_SCALAR)
2840 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2841 else
2842 {
2504 int i; 2843 int i;
2505
2506 errno = data->errorno;
2507 PL_laststype = data->laststype;
2508 PL_laststatval = data->laststatval;
2509 PL_statcache = data->statcache;
2510
2511 EXTEND (SP, AvFILLp (av)); 2844 EXTEND (SP, AvFILLp (av) + 1 - 1);
2512 for (i = 0; i < AvFILLp (av); ++i) 2845 for (i = 1; i <= AvFILLp (av); ++i)
2513 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2846 PUSHs (newSVsv (AvARRAY (av)[i]));
2847 }
2514} 2848}
2515 2849
2516 2850
2517MODULE = Coro::State PACKAGE = Coro::AnyEvent 2851MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518 2852
2519BOOT: 2853BOOT:
2520 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2854 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521 2855
2522SV * 2856void
2523_schedule (...) 2857_schedule (...)
2524 PROTOTYPE: @
2525 CODE: 2858 CODE:
2526{ 2859{
2527 static int incede; 2860 static int incede;
2528 2861
2529 api_cede_notself (aTHX); 2862 api_cede_notself (aTHX);
… …
2543 2876
2544 --incede; 2877 --incede;
2545} 2878}
2546 2879
2547 2880
2548MODULE = Coro::State PACKAGE = PerlIO::cede 2881MODULE = Coro::State PACKAGE = Coro::AIO
2549 2882
2550BOOT: 2883void
2551 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2884_register (char *target, char *proto, SV *req)
2885 CODE:
2886{
2887 HV *st;
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894}
2552 2895

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