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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC

… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 117#endif
118 118
119/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 120 * portable way as possible. */
121#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
122#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
123 126
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 128
126#if __GNUC__ >= 3 129#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
… …
139#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
140 143
141#include "CoroAPI.h" 144#include "CoroAPI.h"
142 145
143#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 147# if CORO_PTHREAD
149static void *coro_thx; 148static void *coro_thx;
150# endif 149# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 150#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 151
174static double (*nvtime)(); /* so why doesn't it take void? */ 152static double (*nvtime)(); /* so why doesn't it take void? */
175 153
176static U32 cctx_gen; 154static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 158static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 161
190static GV *irsgv; /* $/ */ 162static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 163static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 164static SV *rv_diehook;
193static SV *rv_warnhook; 165static SV *rv_warnhook;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 186};
215 187
216/* this is a structure representing a c-level coroutine */ 188/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 189typedef struct coro_cctx
190{
218 struct coro_cctx *next; 191 struct coro_cctx *next;
219 192
220 /* the stack */ 193 /* the stack */
221 void *sptr; 194 void *sptr;
222 size_t ssize; 195 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 215};
243 216
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 217/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 218typedef struct
219{
246 SV *defsv; 220 SV *defsv;
247 AV *defav; 221 AV *defav;
248 SV *errsv; 222 SV *errsv;
249 SV *irsgv; 223 SV *irsgv;
250#define VAR(name,type) type name; 224#define VAR(name,type) type name;
… …
254 228
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 230
257/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
258struct coro { 232struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 234 coro_cctx *cctx;
261 235
262 /* process data */ 236 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 238 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
265 240
266 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
270 246
271 /* statistics */ 247 /* statistics */
272 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
273 249
274 /* coro process data */ 250 /* coro process data */
… …
282 struct coro *next, *prev; 258 struct coro *next, *prev;
283}; 259};
284 260
285typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
287 269
288/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
289 271
290#define PRIO_MAX 3 272#define PRIO_MAX 3
291#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
296 278
297/* for Coro.pm */ 279/* for Coro.pm */
298static SV *coro_current; 280static SV *coro_current;
299static SV *coro_readyhook; 281static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready;
302static struct coro *coro_first; 283static struct coro *coro_first;
284#define coro_nready coroapi.nready
303 285
304/** lowlevel stuff **********************************************************/ 286/** lowlevel stuff **********************************************************/
305 287
306static SV * 288static SV *
307coro_get_sv (pTHX_ const char *name, int create) 289coro_get_sv (pTHX_ const char *name, int create)
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 375
394 return 0; 376 return 0;
395} 377}
396 378
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 381
400static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 383 0, 0, 0, 0,
402 coro_cv_free 384 coro_cv_free
403}; 385};
404 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
405#define CORO_MAGIC(sv, type) \ 392#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 395 : 0)
411 396
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 399
415INLINE struct coro * 400INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
417{ 402{
418 HV *stash; 403 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
437} 422}
438 423
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 429
441/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
442static void 431static void
443get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
444{ 433{
… …
511 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
512 } 501 }
513 502
514 PUTBACK; 503 PUTBACK;
515 } 504 }
505
506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
516} 508}
517 509
518static void 510static void
519save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
520{ 512{
513 c->throw = coro_throw;
514 c->slf_frame = slf_frame;
515
521 { 516 {
522 dSP; 517 dSP;
523 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 519 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 520 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 587 #undef VAR
593 } 588 }
594} 589}
595 590
596/* 591/*
597 * allocate various perl stacks. This is an exact copy 592 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 593 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 594 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 595 * not usually need a lot of stackspace.
601 */ 596 */
602#if CORO_PREFER_PERL_FUNCTIONS 597#if CORO_PREFER_PERL_FUNCTIONS
… …
709#endif 704#endif
710 } 705 }
711 } 706 }
712 707
713 return rss; 708 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 709}
742 710
743/** coroutine stack handling ************************************************/ 711/** coroutine stack handling ************************************************/
744 712
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 713static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 799
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 801}
834 802
835static void 803static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{
806 /* kind of mega-hacky, but works */
807 ta->next = ta->prev = (struct coro *)ta;
808}
809
810static int
811slf_check_nop (pTHX_ struct CoroSLF *frame)
812{
813 return 0;
814}
815
816static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
837{ 818{
838 /* 819 /*
839 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
840 */ 821 */
… …
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN; 861 SPAGAIN;
881 } 862 }
882 863
883 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 866 */
887 SSL_HEAD; 867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
869
870 coro_throw = coro->throw;
888} 871}
889 872
890static void 873static void
891coro_destruct (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
892{ 875{
… …
916 899
917 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
919 902
920 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
922 905
923 coro_destruct_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
924} 907}
925 908
926INLINE void 909INLINE void
… …
936static int 919static int
937runops_trace (pTHX) 920runops_trace (pTHX)
938{ 921{
939 COP *oldcop = 0; 922 COP *oldcop = 0;
940 int oldcxix = -2; 923 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
943 926
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 928 {
946 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
1056 TAINT_NOT; 1039 TAINT_NOT;
1057 return 0; 1040 return 0;
1058} 1041}
1059 1042
1060static void 1043static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1062{ 1045{
1063 ta->prev = (struct coro *)cctx; 1046 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1047 ta->next = 0;
1065} 1048}
1066 1049
… …
1095 1078
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1079/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1080INLINE void
1098transfer_tail (pTHX) 1081transfer_tail (pTHX)
1099{ 1082{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1083 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1084}
1116 1085
1117/* 1086/*
1118 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1088 */
… …
1126# endif 1095# endif
1127#endif 1096#endif
1128 { 1097 {
1129 dTHX; 1098 dTHX;
1130 1099
1131 /* we are the alternative tail to pp_set_stacklevel */ 1100 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1101 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1102 /* PL_nop = PL_nop->op_next */
1137 1103
1138 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
1140 1106
1141 /* cctx_run is the alternative tail of transfer() */ 1107 /* cctx_run is the alternative tail of transfer() */
… …
1302/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1303 1269
1304static void 1270static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1307 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1308 { 1276 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1311 1279
1312 if (expect_false (next->flags & CF_RUNNING)) 1280 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1314 1282
1315 if (expect_false (next->flags & CF_DESTROYED)) 1283 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1317 1285
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1286#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1287 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1289#endif
1322 } 1290 }
1323} 1291}
1324 1292
1325/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1326static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1296{
1329 dSTACKLEVEL; 1297 dSTACKLEVEL;
1330 1298
1331 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1300 if (expect_false (!next))
1333 { 1301 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1336 } 1304 }
1337 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1338 { 1306 {
1339 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
… …
1346 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1347 } 1315 }
1348 1316
1349 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1319
1354 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1356 1322
1357 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1366 1332
1367 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1368 1334
1369 /* possibly untie and reuse the cctx */ 1335 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1336 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1337 prev__cctx->idle_sp == (void *)stacklevel
1372 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx 1339 && !force_cctx
1374 )) 1340 ))
1375 { 1341 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378 1344
1379 prev->cctx = 0; 1345 prev->cctx = 0;
1380 1346
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1389 1355
1390 ++next->usecount; 1356 ++next->usecount;
1391 1357
1392 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1393 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397 1360
1398 if (expect_false (prev__cctx != next->cctx)) 1361 if (expect_false (prev__cctx != next->cctx))
1399 { 1362 {
1400 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
… …
1415coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1379{
1417 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1418 return 0; 1381 return 0;
1419 1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1385
1420 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1421 1387
1422 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1423 { 1389 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1392 --coro_nready;
1428 UNLOCK;
1429 } 1393 }
1430 else 1394 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1396
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1398 {
1435 struct coro temp; 1399 struct coro temp;
1436 1400
1437 if (coro->flags & CF_RUNNING) 1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1402
1440 save_perl (aTHX_ &temp); 1403 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1404 load_perl (aTHX_ coro);
1442 1405
1443 coro_destruct (aTHX_ coro); 1406 coro_destruct (aTHX_ coro);
… …
1494# define MGf_DUP 0 1457# define MGf_DUP 0
1495#endif 1458#endif
1496}; 1459};
1497 1460
1498static void 1461static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1462prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1463{
1501 ta->prev = SvSTATE (prev_sv); 1464 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1465 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1466 TRANSFER_CHECK (*ta);
1504} 1467}
1505 1468
1506static void 1469static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1470api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1471{
1509 dTHX;
1510 struct transfer_args ta; 1472 struct coro_transfer_args ta;
1511 1473
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1514} 1476}
1515 1477
1516/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1517 1479
1518static void 1480INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1520{ 1482{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1522} 1484}
1523 1485
1524static SV * 1486INLINE SV *
1525coro_deq (pTHX) 1487coro_deq (pTHX)
1526{ 1488{
1527 int prio; 1489 int prio;
1528 1490
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1494
1533 return 0; 1495 return 0;
1534} 1496}
1535 1497
1536static int 1498static int
1537api_ready (SV *coro_sv) 1499api_ready (pTHX_ SV *coro_sv)
1538{ 1500{
1539 dTHX;
1540 struct coro *coro; 1501 struct coro *coro;
1541 SV *sv_hook; 1502 SV *sv_hook;
1542 void (*xs_hook)(void); 1503 void (*xs_hook)(void);
1543 1504
1544 if (SvROK (coro_sv)) 1505 if (SvROK (coro_sv))
… …
1549 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1550 return 0; 1511 return 0;
1551 1512
1552 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1553 1514
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1517
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1518 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1519 ++coro_nready;
1561 1520
1562 UNLOCK;
1563
1564 if (sv_hook) 1521 if (sv_hook)
1565 { 1522 {
1566 dSP; 1523 dSP;
1567 1524
1568 ENTER; 1525 ENTER;
… …
1582 1539
1583 return 1; 1540 return 1;
1584} 1541}
1585 1542
1586static int 1543static int
1587api_is_ready (SV *coro_sv) 1544api_is_ready (pTHX_ SV *coro_sv)
1588{ 1545{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1546 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1547}
1593 1548
1594INLINE void 1549INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1550prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1551{
1597 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1598 1553
1599 for (;;) 1554 for (;;)
1600 { 1555 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1603 1557
1604 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1606 { 1560 {
1607 dSP; 1561 dSP;
1608 UNLOCK;
1609 1562
1610 ENTER; 1563 ENTER;
1611 SAVETMPS; 1564 SAVETMPS;
1612 1565
1613 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1618 FREETMPS; 1571 FREETMPS;
1619 LEAVE; 1572 LEAVE;
1620 continue; 1573 continue;
1621 } 1574 }
1622 1575
1623 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1624 1577
1625 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 { 1580 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1631 continue; 1583 continue;
1632 } 1584 }
1633 1585
1634 --coro_nready; 1586 --coro_nready;
1635 UNLOCK;
1636 break; 1587 break;
1637 } 1588 }
1638 1589
1639 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1642 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1646 1597
1647 LOCK;
1648 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1600}
1652 1601
1653INLINE void 1602INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1604{
1656 api_ready (coro_current); 1605 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1606 prepare_schedule (aTHX_ ta);
1658} 1607}
1659 1608
1660static void 1609INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1611{
1663 SV *prev = SvRV (coro_current); 1612 SV *prev = SvRV (coro_current);
1664 1613
1665 if (coro_nready) 1614 if (coro_nready)
1666 { 1615 {
1667 prepare_schedule (aTHX_ ta); 1616 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1617 api_ready (aTHX_ prev);
1669 } 1618 }
1670 else 1619 else
1671 ta->prev = ta->next = SvSTATE (prev); 1620 prepare_nop (aTHX_ ta);
1672} 1621}
1673 1622
1674static void 1623static void
1675api_schedule (void) 1624api_schedule (pTHX)
1676{ 1625{
1677 dTHX;
1678 struct transfer_args ta; 1626 struct coro_transfer_args ta;
1679 1627
1680 prepare_schedule (aTHX_ &ta); 1628 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1629 TRANSFER (ta, 1);
1682} 1630}
1683 1631
1684static int 1632static int
1685api_cede (void) 1633api_cede (pTHX)
1686{ 1634{
1687 dTHX;
1688 struct transfer_args ta; 1635 struct coro_transfer_args ta;
1689 1636
1690 prepare_cede (aTHX_ &ta); 1637 prepare_cede (aTHX_ &ta);
1691 1638
1692 if (expect_true (ta.prev != ta.next)) 1639 if (expect_true (ta.prev != ta.next))
1693 { 1640 {
… …
1697 else 1644 else
1698 return 0; 1645 return 0;
1699} 1646}
1700 1647
1701static int 1648static int
1702api_cede_notself (void) 1649api_cede_notself (pTHX)
1703{ 1650{
1704 if (coro_nready) 1651 if (coro_nready)
1705 { 1652 {
1706 dTHX;
1707 struct transfer_args ta; 1653 struct coro_transfer_args ta;
1708 1654
1709 prepare_cede_notself (aTHX_ &ta); 1655 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1656 TRANSFER (ta, 1);
1711 return 1; 1657 return 1;
1712 } 1658 }
1713 else 1659 else
1714 return 0; 1660 return 0;
1715} 1661}
1716 1662
1717static void 1663static void
1718api_trace (SV *coro_sv, int flags) 1664api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1665{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1666 struct coro *coro = SvSTATE (coro_sv);
1722 1667
1723 if (flags & CC_TRACE) 1668 if (flags & CC_TRACE)
1724 { 1669 {
1725 if (!coro->cctx) 1670 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1671 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1672 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1673 croak ("cannot enable tracing on coroutine with custom stack,");
1729 1674
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1676 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1678 {
… …
1738 else 1683 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1685 }
1741} 1686}
1742 1687
1743#if 0 1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1744static int 1718static void
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1746{ 1720{
1747 AV *padlist; 1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1748 AV *av = (AV *)mg->mg_obj;
1749
1750 abort ();
1751
1752 return 0;
1753} 1722}
1754 1723
1755static MGVTBL coro_gensub_vtbl = { 1724static void
1756 0, 0, 0, 0, 1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 1726{
1758}; 1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1759#endif 1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1760 1921
1761/*****************************************************************************/ 1922/*****************************************************************************/
1762/* PerlIO::cede */ 1923/* PerlIO::cede */
1763 1924
1764typedef struct 1925typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1953 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 1954 double now = nvtime ();
1794 1955
1795 if (now >= self->next) 1956 if (now >= self->next)
1796 { 1957 {
1797 api_cede (); 1958 api_cede (aTHX);
1798 self->next = now + self->every; 1959 self->next = now + self->every;
1799 } 1960 }
1800 1961
1801 return PerlIOBuf_flush (aTHX_ f); 1962 return PerlIOBuf_flush (aTHX_ f);
1802} 1963}
… …
1832 PerlIOBuf_get_cnt, 1993 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 1994 PerlIOBuf_set_ptrcnt,
1834}; 1995};
1835 1996
1836/*****************************************************************************/ 1997/*****************************************************************************/
1998/* Coro::Semaphore */
1837 1999
1838static const CV *ssl_cv; /* for quick consistency check */ 2000static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{
2003 SV *count_sv = AvARRAY (av)[0];
2004 IV count = SvIVX (count_sv);
1839 2005
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */ 2006 count += adjust;
1841static SV *ssl_arg0; 2007 SvIVX (count_sv) = count;
1842static SV *ssl_arg1;
1843 2008
1844/* this restores the stack in the case we patched the entersub, to */ 2009 /* now wake up as many waiters as are expected to lock */
1845/* recreate the stack frame as perl will on following calls */ 2010 while (count > 0 && AvFILLp (av) > 0)
1846/* since entersub cleared the stack */ 2011 {
2012 SV *cb;
2013
2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
2027 }
2028}
2029
2030static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2032{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035}
2036
2037static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2039{
2040 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0];
2042
2043 if (SvIVX (count_sv) > 0)
2044 {
2045 SvSTATE_current->on_destroy = 0;
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2047 return 0;
2048 }
2049 else
2050 {
2051 int i;
2052 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */
2055
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current))
2058 return 1;
2059
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1;
2062 }
2063}
2064
2065static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{
2068 AV *av = (AV *)SvRV (arg [0]);
2069
2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 {
2072 frame->data = (void *)av;
2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 }
2076 else
2077 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088
2089 frame->check = slf_check_semaphore_down;
2090
2091}
2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
1847static OP * 2101static SV *
1848pp_restore (pTHX) 2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1849{ 2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
1850 dSP; 2192 dSP;
2193 int i;
1851 2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
1852 PUSHMARK (SP); 2243 PUSHMARK (SP);
1853 2244
1854 EXTEND (SP, 3); 2245 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2246 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2247
1859 RETURNOP (ssl_restore.op_first); 2248 for (i = 0; i < items; ++i)
1860} 2249 PUSHs (arg [i]);
1861 2250
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2253
1864/* declare prototype */ 2254 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2255 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2257 }
1922 2258
1923 TRANSFER (ta, 0); 2259 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2260 frame->data = (void *)state;
1925 2261 frame->prepare = prepare_schedule;
1926skip: 2262 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2263}
1932 2264
1933static void 2265static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2266coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2267{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2268 dVAR;
2269 dXSARGS;
1937 2270
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2272
1941 /* we patch the op, and then re-run the whole call */ 2273 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2274}
2275
2276/*****************************************************************************/
1956 2277
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2279
1959PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
1960 2281
1961BOOT: 2282BOOT:
1962{ 2283{
1963#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2285# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2286 coro_thx = PERL_GET_CONTEXT;
1967# endif 2287# endif
1968#endif 2288#endif
1969 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
… …
1990 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
1991 2311
1992 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
1994 2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2326
1995 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2329
1997 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
2331
2332 coroapi.sv_state = SvSTATE_;
2333 coroapi.execute_slf = api_execute_slf;
2334 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 2338
1999 { 2339 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2341
2002 if (!svp) croak ("Time::HiRes is required"); 2342 if (!svp) croak ("Time::HiRes is required");
… …
2037 OUTPUT: 2377 OUTPUT:
2038 RETVAL 2378 RETVAL
2039 2379
2040void 2380void
2041_set_stacklevel (...) 2381_set_stacklevel (...)
2042 ALIAS: 2382 CODE:
2043 Coro::State::transfer = 1 2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2044 Coro::schedule = 2 2384
2045 Coro::cede = 3 2385void
2046 Coro::cede_notself = 4 2386transfer (...)
2047 CODE: 2387 PROTOTYPE: $$
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items); 2388 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2049 2390
2050bool 2391bool
2051_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
2052 CODE: 2393 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2060 CODE: 2401 CODE:
2061 _exit (code); 2402 _exit (code);
2062 2403
2063int 2404int
2064cctx_stacksize (int new_stacksize = 0) 2405cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$
2065 CODE: 2407 CODE:
2066 RETVAL = cctx_stacksize; 2408 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 2409 if (new_stacksize)
2068 { 2410 {
2069 cctx_stacksize = new_stacksize; 2411 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 2414 OUTPUT:
2073 RETVAL 2415 RETVAL
2074 2416
2075int 2417int
2076cctx_max_idle (int max_idle = 0) 2418cctx_max_idle (int max_idle = 0)
2419 PROTOTYPE: ;$
2077 CODE: 2420 CODE:
2078 RETVAL = cctx_max_idle; 2421 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 2422 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 2423 cctx_max_idle = max_idle;
2081 OUTPUT: 2424 OUTPUT:
2082 RETVAL 2425 RETVAL
2083 2426
2084int 2427int
2085cctx_count () 2428cctx_count ()
2429 PROTOTYPE:
2086 CODE: 2430 CODE:
2087 RETVAL = cctx_count; 2431 RETVAL = cctx_count;
2088 OUTPUT: 2432 OUTPUT:
2089 RETVAL 2433 RETVAL
2090 2434
2091int 2435int
2092cctx_idle () 2436cctx_idle ()
2437 PROTOTYPE:
2093 CODE: 2438 CODE:
2094 RETVAL = cctx_idle; 2439 RETVAL = cctx_idle;
2095 OUTPUT: 2440 OUTPUT:
2096 RETVAL 2441 RETVAL
2097 2442
2098void 2443void
2099list () 2444list ()
2445 PROTOTYPE:
2100 PPCODE: 2446 PPCODE:
2101{ 2447{
2102 struct coro *coro; 2448 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 2449 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 2450 if (coro->hv)
… …
2166 2512
2167void 2513void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 2515 PROTOTYPE: $;$
2170 CODE: 2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2171 SvREFCNT_dec (self->throw); 2520 SvREFCNT_dec (*throwp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2173 2523
2174void 2524void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$
2527 C_ARGS: aTHX_ coro, flags
2176 2528
2177SV * 2529SV *
2178has_cctx (Coro::State coro) 2530has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 2531 PROTOTYPE: $
2180 CODE: 2532 CODE:
… …
2204 OUTPUT: 2556 OUTPUT:
2205 RETVAL 2557 RETVAL
2206 2558
2207void 2559void
2208force_cctx () 2560force_cctx ()
2561 PROTOTYPE:
2209 CODE: 2562 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2212 2564
2213void 2565void
2214swap_defsv (Coro::State self) 2566swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 2567 PROTOTYPE: $
2216 ALIAS: 2568 ALIAS:
2217 swap_defav = 1 2569 swap_defav = 1
2218 CODE: 2570 CODE:
2219 if (!self->slot) 2571 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 2572 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 2573 else
2222 { 2574 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2575 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 2577
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 2579 }
2580
2228 2581
2229MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
2230 2583
2231BOOT: 2584BOOT:
2232{ 2585{
… …
2257 coroapi.schedule = api_schedule; 2610 coroapi.schedule = api_schedule;
2258 coroapi.cede = api_cede; 2611 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 2612 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 2613 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 2614 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 2615 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 2616 coroapi.current = coro_current;
2264 2617
2265 GCoroAPI = &coroapi; 2618 GCoroAPI = &coroapi;
2266 sv_setiv (sv, (IV)&coroapi); 2619 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 2620 SvREADONLY_on (sv);
2268 } 2621 }
2269} 2622}
2623
2624void
2625schedule (...)
2626 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628
2629void
2630cede (...)
2631 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633
2634void
2635cede_notself (...)
2636 CODE:
2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2270 2638
2271void 2639void
2272_set_current (SV *current) 2640_set_current (SV *current)
2273 PROTOTYPE: $ 2641 PROTOTYPE: $
2274 CODE: 2642 CODE:
… …
2277 2645
2278void 2646void
2279_set_readyhook (SV *hook) 2647_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 2648 PROTOTYPE: $
2281 CODE: 2649 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 2650 SvREFCNT_dec (coro_readyhook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 2652
2287int 2653int
2288prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$
2289 ALIAS: 2656 ALIAS:
2290 nice = 1 2657 nice = 1
2291 CODE: 2658 CODE:
2292{ 2659{
2293 RETVAL = coro->prio; 2660 RETVAL = coro->prio;
… …
2308 2675
2309SV * 2676SV *
2310ready (SV *self) 2677ready (SV *self)
2311 PROTOTYPE: $ 2678 PROTOTYPE: $
2312 CODE: 2679 CODE:
2313 RETVAL = boolSV (api_ready (self)); 2680 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 2681 OUTPUT:
2315 RETVAL 2682 RETVAL
2316 2683
2317int 2684int
2318nready (...) 2685nready (...)
… …
2325# for async_pool speedup 2692# for async_pool speedup
2326void 2693void
2327_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
2328 CODE: 2695 CODE:
2329{ 2696{
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2332 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av; 2701 AV *invoke_av;
2335 int i, len; 2702 int i, len;
2336 2703
… …
2357 { 2724 {
2358 av_fill (defav, len - 1); 2725 av_fill (defav, len - 1);
2359 for (i = 0; i < len; ++i) 2726 for (i = 0; i < len; ++i)
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2361 } 2728 }
2362
2363 SvREFCNT_dec (invoke);
2364} 2729}
2365 2730
2366void 2731void
2367_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
2368 CODE: 2733 CODE:
2369{ 2734{
2370 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
2371 2737
2372 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
2373 2739
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
… …
2382 SvREFCNT_dec (old); 2748 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
2384 } 2750 }
2385 2751
2386 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389 2755
2390 coro->prio = 0; 2756 coro->prio = 0;
2391 2757
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
2394 2760
2395 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
2396} 2762}
2397 2763
2398#if 0
2399 2764
2400void 2765MODULE = Coro::State PACKAGE = PerlIO::cede
2401_generator_call (...) 2766
2402 PROTOTYPE: @ 2767BOOT:
2403 PPCODE: 2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2769
2405 xxxx 2770
2406 abort (); 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2407 2772
2408SV * 2773SV *
2409gensub (SV *sub, ...) 2774new (SV *klass, SV *count_ = 0)
2410 PROTOTYPE: &;@ 2775 CODE:
2411 CODE:
2412{ 2776{
2413 struct coro *coro; 2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2414 MAGIC *mg; 2778 AV *av = newAV ();
2415 CV *xcv; 2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV); 2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440} 2781}
2441 OUTPUT: 2782 OUTPUT:
2442 RETVAL 2783 RETVAL
2443 2784
2444#endif 2785SV *
2445 2786count (SV *self)
2446 2787 CODE:
2447MODULE = Coro::State PACKAGE = Coro::AIO 2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT:
2790 RETVAL
2448 2791
2449void 2792void
2450_get_state (SV *self) 2793up (SV *self, int adjust = 1)
2451 PPCODE: 2794 ALIAS:
2452{ 2795 adjust = 1
2453 AV *defav = GvAV (PL_defgv); 2796 CODE:
2454 AV *av = newAV (); 2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465
2466 av_extend (av, AvFILLp (defav) + 1 + 1);
2467
2468 for (i = 0; i <= AvFILLp (defav); ++i)
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2470
2471 av_push (av, data_sv);
2472
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2474
2475 api_ready (self);
2476}
2477 2798
2478void 2799void
2479_set_state (SV *state) 2800down (SV *self)
2480 PROTOTYPE: $ 2801 CODE:
2481 PPCODE: 2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2803
2804void
2805try (SV *self)
2806 PPCODE:
2482{ 2807{
2483 AV *av = (AV *)SvRV (state); 2808 AV *av = (AV *)SvRV (self);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2809 SV *count_sv = AvARRAY (av)[0];
2810 IV count = SvIVX (count_sv);
2811
2812 if (count > 0)
2813 {
2814 --count;
2815 SvIVX (count_sv) = count;
2816 XSRETURN_YES;
2817 }
2818 else
2819 XSRETURN_NO;
2820}
2821
2822void
2823waiters (SV *self)
2824 CODE:
2825{
2826 AV *av = (AV *)SvRV (self);
2827
2828 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2830 else
2831 {
2485 int i; 2832 int i;
2486
2487 errno = data->errorno;
2488 PL_laststype = data->laststype;
2489 PL_laststatval = data->laststatval;
2490 PL_statcache = data->statcache;
2491
2492 EXTEND (SP, AvFILLp (av)); 2833 EXTEND (SP, AvFILLp (av) + 1 - 1);
2493 for (i = 0; i < AvFILLp (av); ++i) 2834 for (i = 1; i <= AvFILLp (av); ++i)
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2836 }
2495} 2837}
2496 2838
2497 2839
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 2841
2500BOOT: 2842BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 2844
2503SV * 2845void
2504_schedule (...) 2846_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 2847 CODE:
2507{ 2848{
2508 static int incede; 2849 static int incede;
2509 2850
2510 api_cede_notself (); 2851 api_cede_notself (aTHX);
2511 2852
2512 ++incede; 2853 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 2854 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 2855 ;
2515 2856
2516 sv_setsv (sv_activity, &PL_sv_undef); 2857 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 2858 if (coro_nready >= incede)
2518 { 2859 {
… …
2524 2865
2525 --incede; 2866 --incede;
2526} 2867}
2527 2868
2528 2869
2529MODULE = Coro::State PACKAGE = PerlIO::cede 2870MODULE = Coro::State PACKAGE = Coro::AIO
2530 2871
2531BOOT: 2872void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2533 2882

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