ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC vs.
Revision 1.285 by root, Mon Nov 17 04:17:20 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
163 151
164/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
165struct io_state 153struct io_state
166{ 154{
167 AV *res; 155 AV *res;
… …
178static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 168static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 171
190static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 174static SV *rv_diehook;
193static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 196};
215 197
216/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 199typedef struct coro_cctx
200{
218 struct coro_cctx *next; 201 struct coro_cctx *next;
219 202
220 /* the stack */ 203 /* the stack */
221 void *sptr; 204 void *sptr;
222 size_t ssize; 205 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 225};
243 226
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 228typedef struct
229{
246 SV *defsv; 230 SV *defsv;
247 AV *defav; 231 AV *defav;
248 SV *errsv; 232 SV *errsv;
249 SV *irsgv; 233 SV *irsgv;
250#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
254 238
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 240
257/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
258struct coro { 242struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 244 coro_cctx *cctx;
261 245
262 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 248 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
265 250
266 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
270 256
271 /* statistics */ 257 /* statistics */
272 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
273 259
274 /* coro process data */ 260 /* coro process data */
… …
282 struct coro *next, *prev; 268 struct coro *next, *prev;
283}; 269};
284 270
285typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
287 279
288/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
289 281
290#define PRIO_MAX 3 282#define PRIO_MAX 3
291#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
296 288
297/* for Coro.pm */ 289/* for Coro.pm */
298static SV *coro_current; 290static SV *coro_current;
299static SV *coro_readyhook; 291static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready;
302static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
303 295
304/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
305 297
306static SV * 298static SV *
307coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
400static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 393 0, 0, 0, 0,
402 coro_cv_free 394 coro_cv_free
403}; 395};
404 396
405#define CORO_MAGIC(sv, type) \ 397#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 398 expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
408 ? SvMAGIC (sv) \ 400 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \ 401 : mg_find (sv, type) \
410 : 0 402 : 0
411 403
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 404#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) 405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414 406
… …
435 mg = CORO_MAGIC_state (coro); 427 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
437} 429}
438 430
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 445
441/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
442static void 447static void
443get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
444{ 449{
… …
511 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
512 } 517 }
513 518
514 PUTBACK; 519 PUTBACK;
515 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
516} 524}
517 525
518static void 526static void
519save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
520{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
521 { 532 {
522 dSP; 533 dSP;
523 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 603 #undef VAR
593 } 604 }
594} 605}
595 606
596/* 607/*
597 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
601 */ 612 */
602#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
… …
709#endif 720#endif
710 } 721 }
711 } 722 }
712 723
713 return rss; 724 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 725}
734 726
735/** coroutine stack handling ************************************************/ 727/** coroutine stack handling ************************************************/
736 728
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 729static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
823 815
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 817}
826 818
827static void 819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
829{ 834{
830 /* 835 /*
831 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
832 */ 837 */
… …
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN; 877 SPAGAIN;
873 } 878 }
874 879
875 /* this newly created coroutine might be run on an existing cctx which most 880 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 882 */
879 SSL_HEAD; 883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
885
886 coro_throw = coro->throw;
880} 887}
881 888
882static void 889static void
883coro_destruct (pTHX_ struct coro *coro) 890coro_destruct (pTHX_ struct coro *coro)
884{ 891{
… …
908 915
909 SvREFCNT_dec (PL_diehook); 916 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 917 SvREFCNT_dec (PL_warnhook);
911 918
912 SvREFCNT_dec (coro->saved_deffh); 919 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 920 SvREFCNT_dec (coro_throw);
914 921
915 coro_destruct_stacks (aTHX); 922 coro_destruct_stacks (aTHX);
916} 923}
917 924
918INLINE void 925INLINE void
… …
928static int 935static int
929runops_trace (pTHX) 936runops_trace (pTHX)
930{ 937{
931 COP *oldcop = 0; 938 COP *oldcop = 0;
932 int oldcxix = -2; 939 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
935 942
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 944 {
938 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
1048 TAINT_NOT; 1055 TAINT_NOT;
1049 return 0; 1056 return 0;
1050} 1057}
1051 1058
1052static void 1059static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1054{ 1061{
1055 ta->prev = (struct coro *)cctx; 1062 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1063 ta->next = 0;
1057} 1064}
1058 1065
… …
1087 1094
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1095/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1096INLINE void
1090transfer_tail (pTHX) 1097transfer_tail (pTHX)
1091{ 1098{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1099 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1100}
1108 1101
1109/* 1102/*
1110 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1104 */
… …
1118# endif 1111# endif
1119#endif 1112#endif
1120 { 1113 {
1121 dTHX; 1114 dTHX;
1122 1115
1123 /* we are the alternative tail to pp_set_stacklevel */ 1116 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1117 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
1129 1119
1130 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
1132 1122
1133 /* cctx_run is the alternative tail of transfer() */ 1123 /* cctx_run is the alternative tail of transfer() */
… …
1294/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
1295 1285
1296static void 1286static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1288{
1289 /* TODO: throwing up here is considered harmful */
1290
1299 if (expect_true (prev != next)) 1291 if (expect_true (prev != next))
1300 { 1292 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1303 1295
1304 if (expect_false (next->flags & CF_RUNNING)) 1296 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306 1298
1307 if (expect_false (next->flags & CF_DESTROYED)) 1299 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1309 1301
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1302#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1305#endif
1314 } 1306 }
1315} 1307}
1316 1308
1317/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
1318static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1312{
1321 dSTACKLEVEL; 1313 dSTACKLEVEL;
1322 1314
1323 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1316 if (expect_false (!next))
1325 { 1317 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1320 }
1329 else if (expect_true (prev != next)) 1321 else if (expect_true (prev != next))
1330 { 1322 {
1331 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
… …
1338 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1339 } 1331 }
1340 1332
1341 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1335
1346 /* first get rid of the old state */ 1336 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1337 save_perl (aTHX_ prev);
1348 1338
1349 if (expect_false (next->flags & CF_NEW)) 1339 if (expect_false (next->flags & CF_NEW))
… …
1358 1348
1359 prev__cctx = prev->cctx; 1349 prev__cctx = prev->cctx;
1360 1350
1361 /* possibly untie and reuse the cctx */ 1351 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1352 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1353 prev__cctx->idle_sp == (void *)stacklevel
1364 && !(prev__cctx->flags & CC_TRACE) 1354 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx 1355 && !force_cctx
1366 )) 1356 ))
1367 { 1357 {
1368 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1370 1360
1371 prev->cctx = 0; 1361 prev->cctx = 0;
1372 1362
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1381 1371
1382 ++next->usecount; 1372 ++next->usecount;
1383 1373
1384 if (expect_true (!next->cctx)) 1374 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1375 next->cctx = cctx_get (aTHX);
1386
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1388 transfer_next = next;
1389 1376
1390 if (expect_false (prev__cctx != next->cctx)) 1377 if (expect_false (prev__cctx != next->cctx))
1391 { 1378 {
1392 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
… …
1407coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1395{
1409 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1410 return 0; 1397 return 0;
1411 1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1401
1412 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1413 1403
1414 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1415 { 1405 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1408 --coro_nready;
1420 UNLOCK;
1421 } 1409 }
1422 else 1410 else
1423 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1424 1412
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1426 { 1414 {
1427 struct coro temp; 1415 struct coro temp;
1428 1416
1429 if (coro->flags & CF_RUNNING) 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1418
1432 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1434 1421
1435 coro_destruct (aTHX_ coro); 1422 coro_destruct (aTHX_ coro);
… …
1486# define MGf_DUP 0 1473# define MGf_DUP 0
1487#endif 1474#endif
1488}; 1475};
1489 1476
1490static void 1477static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1479{
1493 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1496} 1483}
1497 1484
1498static void 1485static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1487{
1501 dTHX;
1502 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1503 1489
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1491 TRANSFER (ta, 1);
1506} 1492}
1507 1493
1508/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1509 1495
1510static void 1496INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1512{ 1498{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1514} 1500}
1515 1501
1516static SV * 1502INLINE SV *
1517coro_deq (pTHX) 1503coro_deq (pTHX)
1518{ 1504{
1519 int prio; 1505 int prio;
1520 1506
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 1510
1525 return 0; 1511 return 0;
1526} 1512}
1527 1513
1528static int 1514static int
1529api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1530{ 1516{
1531 dTHX;
1532 struct coro *coro; 1517 struct coro *coro;
1533 SV *sv_hook; 1518 SV *sv_hook;
1534 void (*xs_hook)(void); 1519 void (*xs_hook)(void);
1535 1520
1536 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
… …
1541 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1542 return 0; 1527 return 0;
1543 1528
1544 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1545 1530
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1533
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1534 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1535 ++coro_nready;
1553 1536
1554 UNLOCK;
1555
1556 if (sv_hook) 1537 if (sv_hook)
1557 { 1538 {
1558 dSP; 1539 dSP;
1559 1540
1560 ENTER; 1541 ENTER;
… …
1574 1555
1575 return 1; 1556 return 1;
1576} 1557}
1577 1558
1578static int 1559static int
1579api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1580{ 1561{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1563}
1585 1564
1586INLINE void 1565INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1588{ 1567{
1589 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1590 1569
1591 for (;;) 1570 for (;;)
1592 { 1571 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX); 1572 next_sv = coro_deq (aTHX);
1595 1573
1596 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv)) 1575 if (expect_false (!next_sv))
1598 { 1576 {
1599 dSP; 1577 dSP;
1600 UNLOCK;
1601 1578
1602 ENTER; 1579 ENTER;
1603 SAVETMPS; 1580 SAVETMPS;
1604 1581
1605 PUSHMARK (SP); 1582 PUSHMARK (SP);
… …
1610 FREETMPS; 1587 FREETMPS;
1611 LEAVE; 1588 LEAVE;
1612 continue; 1589 continue;
1613 } 1590 }
1614 1591
1615 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1616 1593
1617 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED)) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 { 1596 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1623 continue; 1599 continue;
1624 } 1600 }
1625 1601
1626 --coro_nready; 1602 --coro_nready;
1627 UNLOCK;
1628 break; 1603 break;
1629 } 1604 }
1630 1605
1631 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1633 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1634 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1636 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1638 1613
1639 LOCK;
1640 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1642 UNLOCK;
1643} 1616}
1644 1617
1645INLINE void 1618INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1620{
1648 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1650} 1623}
1651 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1652static int 1648static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1654{ 1650{
1655 if (coro_nready) 1651 struct coro_transfer_args ta;
1656 { 1652
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1660 return 1; 1658 return 1;
1661 } 1659 }
1662 else 1660 else
1663 return 0; 1661 return 0;
1664} 1662}
1665 1663
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1664static int
1677api_cede (void) 1665api_cede_notself (pTHX)
1678{ 1666{
1679 dTHX; 1667 if (coro_nready)
1668 {
1680 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1681 1670
1682 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1672 TRANSFER (ta, 1);
1687 return 1; 1673 return 1;
1688 } 1674 }
1689 else 1675 else
1690 return 0; 1676 return 0;
1691} 1677}
1692 1678
1693static int 1679static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1681{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1713 1683
1714 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1715 { 1685 {
1716 if (!coro->cctx) 1686 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1687 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1720 1690
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1692 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1694 {
… …
1729 else 1699 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1701 }
1732} 1702}
1733 1703
1734#if 0
1735static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1737{
1738 AV *padlist;
1739 AV *av = (AV *)mg->mg_obj;
1740
1741 abort ();
1742
1743 return 0;
1744}
1745
1746static MGVTBL coro_gensub_vtbl = {
1747 0, 0, 0, 0,
1748 coro_gensub_free
1749};
1750#endif
1751
1752/*****************************************************************************/ 1704/*****************************************************************************/
1753/* PerlIO::cede */ 1705/* PerlIO::cede */
1754 1706
1755typedef struct 1707typedef struct
1756{ 1708{
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 1736 double now = nvtime ();
1785 1737
1786 if (now >= self->next) 1738 if (now >= self->next)
1787 { 1739 {
1788 api_cede (); 1740 api_cede (aTHX);
1789 self->next = now + self->every; 1741 self->next = now + self->every;
1790 } 1742 }
1791 1743
1792 return PerlIOBuf_flush (aTHX_ f); 1744 return PerlIOBuf_flush (aTHX_ f);
1793} 1745}
… …
1824 PerlIOBuf_set_ptrcnt, 1776 PerlIOBuf_set_ptrcnt,
1825}; 1777};
1826 1778
1827/*****************************************************************************/ 1779/*****************************************************************************/
1828 1780
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */ 1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1832static SV *ssl_arg0; 1783static SV **slf_argv;
1833static SV *ssl_arg1; 1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1834 1786
1835/* this restores the stack in the case we patched the entersub, to */ 1787/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */ 1788/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */ 1789/* since entersub cleared the stack */
1838static OP * 1790static OP *
1839pp_restore (pTHX) 1791pp_restore (pTHX)
1840{ 1792{
1841 dSP; 1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1842 1795
1843 PUSHMARK (SP); 1796 PUSHMARK (SP);
1844 1797
1845 EXTEND (SP, 3); 1798 EXTEND (SP, slf_argc + 1);
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 1799
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0; 1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1848 PUSHs ((SV *)CvGV (ssl_cv)); 1803 PUSHs ((SV *)CvGV (slf_cv));
1849 1804
1850 RETURNOP (ssl_restore.op_first); 1805 RETURNOP (slf_restore.op_first);
1851} 1806}
1852 1807
1853/* declare prototype */ 1808static void
1854XS(XS_Coro__State__set_stacklevel); 1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1855 1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
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 * SLF stands for "schedule-like-function".
1872 */
1856static OP * 1873static OP *
1857pp_set_stacklevel (pTHX) 1874pp_slf (pTHX)
1858{ 1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1859 dSP; 1884 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1; 1885 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */ 1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1863 1888
1864 /* do a quick consistency check on the "function" object, and if it isn't */ 1889 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */ 1890 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) 1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1867 return PL_ppaddr[OP_ENTERSUB](aTHX); 1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868 1893
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED)) 1894 if (!(PL_op->op_flags & OPf_STACKED))
1873 { 1895 {
1874 /* ampersand-form of call, use @_ instead of stack */ 1896 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv); 1897 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av); 1898 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1; 1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1878 } 1942 }
1879 1943
1880 PUTBACK; 1944 PUTBACK;
1881 switch (PL_op->op_private & 7) 1945 }
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886 1946
1887 case 1: 1947 /* exception handling */
1888 if (items != 2) 1948 if (expect_false (coro_throw))
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1908 1951
1909 TRANSFER (ta, 0); 1952 coro_throw = 0;
1910 SPAGAIN; 1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1911 1956
1912skip: 1957 return NORMAL;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006
2007static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{
2010 SV *count_sv = AvARRAY (av)[0];
2011 IV count = SvIVX (count_sv);
2012
2013 count += adjust;
2014 SvIVX (count_sv) = count;
2015
2016 /* now wake up as many waiters as are expected to lock */
2017 while (count > 0 && AvFILLp (av) > 0)
2018 {
2019 SV *cb;
2020
2021 /* swap first two elements so we can shift a waiter */
2022 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av);
2025
2026 if (SvOBJECT (cb))
2027 api_ready (aTHX_ cb);
2028 else
2029 croak ("callbacks not yet supported");
2030
2031 SvREFCNT_dec (cb);
2032
2033 --count;
2034 }
2035}
2036
2037static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2039{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042}
2043
2044static int
2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2046{
2047 AV *av = (AV *)frame->data;
2048 SV *count_sv = AvARRAY (av)[0];
2049
2050 if (SvIVX (count_sv) > 0)
2051 {
2052 SvSTATE_current->on_destroy = 0;
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2054 return 0;
2055 }
2056 else
2057 {
2058 int i;
2059 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */
2062
2063 for (i = 1; i <= AvFILLp (av); ++i)
2064 if (AvARRAY (av)[i] == SvRV (coro_current))
2065 return 1;
2066
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1;
2069 }
2070}
2071
2072static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 AV *av = (AV *)SvRV (arg [0]);
2076
2077 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 {
2079 frame->data = (void *)av;
2080 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 }
2083 else
2084 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 }
2095
2096 frame->check = slf_check_semaphore_down;
2097
2098}
2099
2100/*****************************************************************************/
2101
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2103
2104/* create a closure from XS, returns a code reference */
2105/* the arg can be accessed via GENSUB_ARG from the callback */
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{
2110 CV *cv = (CV *)NEWSV (0, 0);
2111
2112 sv_upgrade ((SV *)cv, SVt_PVCV);
2113
2114 CvANON_on (cv);
2115 CvISXSUB_on (cv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118
2119 return newRV_noinc ((SV *)cv);
2120}
2121
2122/*****************************************************************************/
1918 2123
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2125
1921PROTOTYPES: DISABLE 2126PROTOTYPES: DISABLE
1922 2127
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2128BOOT:
1955{ 2129{
1956#ifdef USE_ITHREADS 2130#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2131# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2132 coro_thx = PERL_GET_CONTEXT;
1960# endif 2133# endif
1961#endif 2134#endif
1962 BOOT_PAGESIZE; 2135 BOOT_PAGESIZE;
1963
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1965 2136
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2139
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2140 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 2156 main_top_env = PL_top_env;
1986 2157
1987 while (main_top_env->je_prev) 2158 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2159 main_top_env = main_top_env->je_prev;
1989 2160
2161 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf,
2166 newSVpv ("coro_slf", 0), 0);
2167
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf,
2170 newSVpv ("coro schedule like function", 0), 0);
2171 }
2172
1990 coroapi.ver = CORO_API_VERSION; 2173 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2174 coroapi.rev = CORO_API_REVISION;
2175
1992 coroapi.transfer = api_transfer; 2176 coroapi.transfer = api_transfer;
2177
2178 coroapi.sv_state = SvSTATE_;
2179 coroapi.execute_slf = api_execute_slf;
2180 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself;
1993 2184
1994 { 2185 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2187
1997 if (!svp) croak ("Time::HiRes is required"); 2188 if (!svp) croak ("Time::HiRes is required");
… …
2029 for (i = 1; i < items; i++) 2220 for (i = 1; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2221 av_push (coro->args, newSVsv (ST (i)));
2031} 2222}
2032 OUTPUT: 2223 OUTPUT:
2033 RETVAL 2224 RETVAL
2225
2226void
2227_set_stacklevel (...)
2228 CODE:
2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2230
2231void
2232transfer (...)
2233 PROTOTYPE: $$
2234 CODE:
2235 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 2236
2035bool 2237bool
2036_destroy (SV *coro_sv) 2238_destroy (SV *coro_sv)
2037 CODE: 2239 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2045 CODE: 2247 CODE:
2046 _exit (code); 2248 _exit (code);
2047 2249
2048int 2250int
2049cctx_stacksize (int new_stacksize = 0) 2251cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$
2050 CODE: 2253 CODE:
2051 RETVAL = cctx_stacksize; 2254 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 2255 if (new_stacksize)
2053 { 2256 {
2054 cctx_stacksize = new_stacksize; 2257 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 2260 OUTPUT:
2058 RETVAL 2261 RETVAL
2059 2262
2060int 2263int
2061cctx_max_idle (int max_idle = 0) 2264cctx_max_idle (int max_idle = 0)
2265 PROTOTYPE: ;$
2062 CODE: 2266 CODE:
2063 RETVAL = cctx_max_idle; 2267 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 2268 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 2269 cctx_max_idle = max_idle;
2066 OUTPUT: 2270 OUTPUT:
2067 RETVAL 2271 RETVAL
2068 2272
2069int 2273int
2070cctx_count () 2274cctx_count ()
2275 PROTOTYPE:
2071 CODE: 2276 CODE:
2072 RETVAL = cctx_count; 2277 RETVAL = cctx_count;
2073 OUTPUT: 2278 OUTPUT:
2074 RETVAL 2279 RETVAL
2075 2280
2076int 2281int
2077cctx_idle () 2282cctx_idle ()
2283 PROTOTYPE:
2078 CODE: 2284 CODE:
2079 RETVAL = cctx_idle; 2285 RETVAL = cctx_idle;
2080 OUTPUT: 2286 OUTPUT:
2081 RETVAL 2287 RETVAL
2082 2288
2083void 2289void
2084list () 2290list ()
2291 PROTOTYPE:
2085 PPCODE: 2292 PPCODE:
2086{ 2293{
2087 struct coro *coro; 2294 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 2295 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 2296 if (coro->hv)
… …
2151 2358
2152void 2359void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 2360throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 2361 PROTOTYPE: $;$
2155 CODE: 2362 CODE:
2363{
2364 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw;
2156 SvREFCNT_dec (self->throw); 2366 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368}
2158 2369
2159void 2370void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$
2373 C_ARGS: aTHX_ coro, flags
2161 2374
2162SV * 2375SV *
2163has_cctx (Coro::State coro) 2376has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 2377 PROTOTYPE: $
2165 CODE: 2378 CODE:
… …
2189 OUTPUT: 2402 OUTPUT:
2190 RETVAL 2403 RETVAL
2191 2404
2192void 2405void
2193force_cctx () 2406force_cctx ()
2407 PROTOTYPE:
2194 CODE: 2408 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 2409 SvSTATE_current->cctx->idle_sp = 0;
2197 2410
2198void 2411void
2199swap_defsv (Coro::State self) 2412swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 2413 PROTOTYPE: $
2201 ALIAS: 2414 ALIAS:
2202 swap_defav = 1 2415 swap_defav = 1
2203 CODE: 2416 CODE:
2204 if (!self->slot) 2417 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 2418 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 2419 else
2207 { 2420 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2421 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 2423
… …
2242 coroapi.schedule = api_schedule; 2455 coroapi.schedule = api_schedule;
2243 coroapi.cede = api_cede; 2456 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 2457 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 2458 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 2459 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 2460 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 2461 coroapi.current = coro_current;
2249 2462
2250 GCoroAPI = &coroapi; 2463 GCoroAPI = &coroapi;
2251 sv_setiv (sv, (IV)&coroapi); 2464 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 2465 SvREADONLY_on (sv);
2253 } 2466 }
2254} 2467}
2468
2469void
2470schedule (...)
2471 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473
2474void
2475cede (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478
2479void
2480cede_notself (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2255 2483
2256void 2484void
2257_set_current (SV *current) 2485_set_current (SV *current)
2258 PROTOTYPE: $ 2486 PROTOTYPE: $
2259 CODE: 2487 CODE:
… …
2262 2490
2263void 2491void
2264_set_readyhook (SV *hook) 2492_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 2493 PROTOTYPE: $
2266 CODE: 2494 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 2495 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 2497
2272int 2498int
2273prio (Coro::State coro, int newprio = 0) 2499prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$
2274 ALIAS: 2501 ALIAS:
2275 nice = 1 2502 nice = 1
2276 CODE: 2503 CODE:
2277{ 2504{
2278 RETVAL = coro->prio; 2505 RETVAL = coro->prio;
… …
2293 2520
2294SV * 2521SV *
2295ready (SV *self) 2522ready (SV *self)
2296 PROTOTYPE: $ 2523 PROTOTYPE: $
2297 CODE: 2524 CODE:
2298 RETVAL = boolSV (api_ready (self)); 2525 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 2526 OUTPUT:
2300 RETVAL 2527 RETVAL
2301 2528
2302int 2529int
2303nready (...) 2530nready (...)
… …
2310# for async_pool speedup 2537# for async_pool speedup
2311void 2538void
2312_pool_1 (SV *cb) 2539_pool_1 (SV *cb)
2313 CODE: 2540 CODE:
2314{ 2541{
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current); 2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2317 AV *defav = GvAV (PL_defgv); 2544 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av; 2546 AV *invoke_av;
2320 int i, len; 2547 int i, len;
2321 2548
… …
2342 { 2569 {
2343 av_fill (defav, len - 1); 2570 av_fill (defav, len - 1);
2344 for (i = 0; i < len; ++i) 2571 for (i = 0; i < len; ++i)
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2346 } 2573 }
2347
2348 SvREFCNT_dec (invoke);
2349} 2574}
2350 2575
2351void 2576void
2352_pool_2 (SV *cb) 2577_pool_2 (SV *cb)
2353 CODE: 2578 CODE:
2354{ 2579{
2355 struct coro *coro = SvSTATE (coro_current); 2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
2356 2582
2357 sv_setsv (cb, &PL_sv_undef); 2583 sv_setsv (cb, &PL_sv_undef);
2358 2584
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0; 2586 coro->saved_deffh = 0;
… …
2367 SvREFCNT_dec (old); 2593 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n"); 2594 croak ("\3async_pool terminate\2\n");
2369 } 2595 }
2370 2596
2371 av_clear (GvAV (PL_defgv)); 2597 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374 2600
2375 coro->prio = 0; 2601 coro->prio = 0;
2376 2602
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0); 2604 api_trace (aTHX_ coro_current, 0);
2379 2605
2380 av_push (av_async_pool, newSVsv (coro_current)); 2606 av_push (av_async_pool, newSVsv (coro_current));
2381} 2607}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT:
2427 RETVAL
2428
2429#endif
2430 2608
2431 2609
2432MODULE = Coro::State PACKAGE = Coro::AIO 2610MODULE = Coro::State PACKAGE = Coro::AIO
2433 2611
2434void 2612void
2435_get_state (SV *self) 2613_get_state (SV *self)
2614 PROTOTYPE: $
2436 PPCODE: 2615 PPCODE:
2437{ 2616{
2438 AV *defav = GvAV (PL_defgv); 2617 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV (); 2618 AV *av = newAV ();
2440 int i; 2619 int i;
… …
2455 2634
2456 av_push (av, data_sv); 2635 av_push (av, data_sv);
2457 2636
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2459 2638
2460 api_ready (self); 2639 api_ready (aTHX_ self);
2461} 2640}
2462 2641
2463void 2642void
2464_set_state (SV *state) 2643_set_state (SV *state)
2465 PROTOTYPE: $ 2644 PROTOTYPE: $
… …
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 2663
2485BOOT: 2664BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 2666
2488SV * 2667void
2489_schedule (...) 2668_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 2669 CODE:
2492{ 2670{
2493 static int incede; 2671 static int incede;
2494 2672
2495 api_cede_notself (); 2673 api_cede_notself (aTHX);
2496 2674
2497 ++incede; 2675 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 2676 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 2677 ;
2500 2678
2501 sv_setsv (sv_activity, &PL_sv_undef); 2679 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 2680 if (coro_nready >= incede)
2503 { 2681 {
… …
2514MODULE = Coro::State PACKAGE = PerlIO::cede 2692MODULE = Coro::State PACKAGE = PerlIO::cede
2515 2693
2516BOOT: 2694BOOT:
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2695 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2518 2696
2697MODULE = Coro::State PACKAGE = Coro::Semaphore
2698
2699SV *
2700new (SV *klass, SV *count_ = 0)
2701 CODE:
2702{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2704 AV *av = newAV ();
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2707}
2708 OUTPUT:
2709 RETVAL
2710
2711SV *
2712count (SV *self)
2713 CODE:
2714 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2715 OUTPUT:
2716 RETVAL
2717
2718void
2719up (SV *self, int adjust = 1)
2720 ALIAS:
2721 adjust = 1
2722 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724
2725void
2726down (SV *self)
2727 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2729
2730void
2731try (SV *self)
2732 PPCODE:
2733{
2734 AV *av = (AV *)SvRV (self);
2735 SV *count_sv = AvARRAY (av)[0];
2736 IV count = SvIVX (count_sv);
2737
2738 if (count > 0)
2739 {
2740 --count;
2741 SvIVX (count_sv) = count;
2742 XSRETURN_YES;
2743 }
2744 else
2745 XSRETURN_NO;
2746}
2747
2748void
2749waiters (SV *self)
2750 CODE:
2751{
2752 AV *av = (AV *)SvRV (self);
2753
2754 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2756 else
2757 {
2758 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1);
2760 for (i = 1; i <= AvFILLp (av); ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i]));
2762 }
2763}
2764

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines