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Comparing Coro/Coro/State.xs (file contents):
Revision 1.276 by root, Sat Nov 15 07:49:48 2008 UTC vs.
Revision 1.289 by root, Mon Nov 17 08:25:06 2008 UTC

… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
100 103
101/* 5.8.7 */ 104/* 5.8.7 */
102#ifndef SvRV_set 105#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 107#endif
… …
142#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
143 146
144#include "CoroAPI.h" 147#include "CoroAPI.h"
145 148
146#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 150# if CORO_PTHREAD
152static void *coro_thx; 151static void *coro_thx;
153# endif 152# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 153#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 154
177static double (*nvtime)(); /* so why doesn't it take void? */ 155static double (*nvtime)(); /* so why doesn't it take void? */
178 156
179static U32 cctx_gen; 157static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 158static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 161static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 164
188static GV *irsgv; /* $/ */ 165static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 166static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 167static SV *rv_diehook;
191static SV *rv_warnhook; 168static SV *rv_warnhook;
… …
257/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
258struct coro { 235struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 236 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 237 coro_cctx *cctx;
261 238
262 /* process data */ 239 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 240 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 241 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
266 243
267 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
271 249
272 /* statistics */ 250 /* statistics */
273 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
274 252
275 /* coro process data */ 253 /* coro process data */
… …
284}; 262};
285 263
286typedef struct coro *Coro__State; 264typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 265typedef struct coro *Coro__State_or_hashref;
288 266
267/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 270static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
290 272
291/** Coro ********************************************************************/ 273/** Coro ********************************************************************/
292 274
293#define PRIO_MAX 3 275#define PRIO_MAX 3
294#define PRIO_HIGH 1 276#define PRIO_HIGH 1
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 378
397 return 0; 379 return 0;
398} 380}
399 381
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 383#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 384
403static MGVTBL coro_cv_vtbl = { 385static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 386 0, 0, 0, 0,
405 coro_cv_free 387 coro_cv_free
406}; 388};
407 389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
408#define CORO_MAGIC(sv, type) \ 395#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 396 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 397 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 398 : 0)
414 399
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 402
418INLINE struct coro * 403INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
420{ 405{
421 HV *stash; 406 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
440} 425}
441 426
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 432
444/* the next two functions merely cache the padlists */ 433/* the next two functions merely cache the padlists */
445static void 434static void
446get_padlist (pTHX_ CV *cv) 435get_padlist (pTHX_ CV *cv)
447{ 436{
… …
515 } 504 }
516 505
517 PUTBACK; 506 PUTBACK;
518 } 507 }
519 508
520 slf_frame = c->slf_frame; 509 slf_frame = c->slf_frame;
510 coro_throw = c->throw;
521} 511}
522 512
523static void 513static void
524save_perl (pTHX_ Coro__State c) 514save_perl (pTHX_ Coro__State c)
525{ 515{
516 c->throw = coro_throw;
526 c->slf_frame = slf_frame; 517 c->slf_frame = slf_frame;
527 518
528 { 519 {
529 dSP; 520 dSP;
530 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
… …
811 802
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 804}
814 805
815static void 806static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 807prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 808{
818 /* kind of mega-hacky, but works */ 809 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 810 ta->next = ta->prev = (struct coro *)ta;
820} 811}
821 812
822static int 813static int
823slf_check_nop (aTHX) 814slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 815{
825 return 0; 816 return 0;
826} 817}
827 818
828static void 819static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 820coro_setup (pTHX_ struct coro *coro)
830{ 821{
831 /* 822 /*
832 * emulate part of the perl startup here. 823 * emulate part of the perl startup here.
833 */ 824 */
… …
876 /* this newly created coroutine might be run on an existing cctx which most 867 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 869 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
872
873 coro_throw = coro->throw;
881} 874}
882 875
883static void 876static void
884coro_destruct (pTHX_ struct coro *coro) 877coro_destruct (pTHX_ struct coro *coro)
885{ 878{
… …
909 902
910 SvREFCNT_dec (PL_diehook); 903 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 904 SvREFCNT_dec (PL_warnhook);
912 905
913 SvREFCNT_dec (coro->saved_deffh); 906 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 907 SvREFCNT_dec (coro_throw);
915 908
916 coro_destruct_stacks (aTHX); 909 coro_destruct_stacks (aTHX);
917} 910}
918 911
919INLINE void 912INLINE void
… …
929static int 922static int
930runops_trace (pTHX) 923runops_trace (pTHX)
931{ 924{
932 COP *oldcop = 0; 925 COP *oldcop = 0;
933 int oldcxix = -2; 926 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx; 928 coro_cctx *cctx = coro->cctx;
936 929
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 931 {
939 PERL_ASYNC_CHECK (); 932 PERL_ASYNC_CHECK ();
… …
1088 1081
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1082/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1083INLINE void
1091transfer_tail (pTHX) 1084transfer_tail (pTHX)
1092{ 1085{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1086 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1087}
1109 1088
1110/* 1089/*
1111 * this is a _very_ stripped down perl interpreter ;) 1090 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1091 */
… …
1127 1106
1128 /* inject a fake subroutine call to cctx_init */ 1107 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1108 cctx_prepare (aTHX_ (coro_cctx *)arg);
1130 1109
1131 /* cctx_run is the alternative tail of transfer() */ 1110 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1111 transfer_tail (aTHX);
1134 1112
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1113 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1114 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1115 perl_run (PL_curinterp);
… …
1293/** coroutine switching *****************************************************/ 1271/** coroutine switching *****************************************************/
1294 1272
1295static void 1273static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1274transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1275{
1276 /* TODO: throwing up here is considered harmful */
1277
1298 if (expect_true (prev != next)) 1278 if (expect_true (prev != next))
1299 { 1279 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302 1282
… …
1312#endif 1292#endif
1313 } 1293 }
1314} 1294}
1315 1295
1316/* always use the TRANSFER macro */ 1296/* always use the TRANSFER macro */
1317static void NOINLINE 1297static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1299{
1320 dSTACKLEVEL; 1300 dSTACKLEVEL;
1321 1301
1322 /* sometimes transfer is only called to set idle_sp */ 1302 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1303 if (expect_false (!next))
1324 { 1304 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1307 }
1328 else if (expect_true (prev != next)) 1308 else if (expect_true (prev != next))
1329 { 1309 {
1330 coro_cctx *prev__cctx; 1310 coro_cctx *prev__cctx;
… …
1337 prev->flags |= CF_RUNNING; 1317 prev->flags |= CF_RUNNING;
1338 } 1318 }
1339 1319
1340 prev->flags &= ~CF_RUNNING; 1320 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1321 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1322
1345 /* first get rid of the old state */ 1323 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1324 save_perl (aTHX_ prev);
1347 1325
1348 if (expect_false (next->flags & CF_NEW)) 1326 if (expect_false (next->flags & CF_NEW))
… …
1357 1335
1358 prev__cctx = prev->cctx; 1336 prev__cctx = prev->cctx;
1359 1337
1360 /* possibly untie and reuse the cctx */ 1338 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1339 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1340 prev__cctx->idle_sp == (void *)stacklevel
1363 && !(prev__cctx->flags & CC_TRACE) 1341 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx 1342 && !force_cctx
1365 )) 1343 ))
1366 { 1344 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1381 ++next->usecount; 1359 ++next->usecount;
1382 1360
1383 if (expect_true (!next->cctx)) 1361 if (expect_true (!next->cctx))
1384 next->cctx = cctx_get (aTHX); 1362 next->cctx = cctx_get (aTHX);
1385 1363
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1388
1389 if (expect_false (prev__cctx != next->cctx)) 1364 if (expect_false (prev__cctx != next->cctx))
1390 { 1365 {
1391 prev__cctx->top_env = PL_top_env; 1366 prev__cctx->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1367 PL_top_env = next->cctx->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1406coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1382{
1408 if (coro->flags & CF_DESTROYED) 1383 if (coro->flags & CF_DESTROYED)
1409 return 0; 1384 return 0;
1410 1385
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro);
1388
1411 coro->flags |= CF_DESTROYED; 1389 coro->flags |= CF_DESTROYED;
1412 1390
1413 if (coro->flags & CF_READY) 1391 if (coro->flags & CF_READY)
1414 { 1392 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1393 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1394 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1395 --coro_nready;
1419 UNLOCK;
1420 } 1396 }
1421 else 1397 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1399
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1400 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1502 TRANSFER (ta, 1); 1478 TRANSFER (ta, 1);
1503} 1479}
1504 1480
1505/** Coro ********************************************************************/ 1481/** Coro ********************************************************************/
1506 1482
1507static void 1483INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1484coro_enq (pTHX_ struct coro *coro)
1509{ 1485{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1487}
1512 1488
1513static SV * 1489INLINE SV *
1514coro_deq (pTHX) 1490coro_deq (pTHX)
1515{ 1491{
1516 int prio; 1492 int prio;
1517 1493
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1513 if (coro->flags & CF_READY)
1538 return 0; 1514 return 0;
1539 1515
1540 coro->flags |= CF_READY; 1516 coro->flags |= CF_READY;
1541 1517
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1520
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1521 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1522 ++coro_nready;
1549 1523
1550 UNLOCK;
1551
1552 if (sv_hook) 1524 if (sv_hook)
1553 { 1525 {
1554 dSP; 1526 dSP;
1555 1527
1556 ENTER; 1528 ENTER;
… …
1582{ 1554{
1583 SV *prev_sv, *next_sv; 1555 SV *prev_sv, *next_sv;
1584 1556
1585 for (;;) 1557 for (;;)
1586 { 1558 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1559 next_sv = coro_deq (aTHX);
1589 1560
1590 /* nothing to schedule: call the idle handler */ 1561 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1562 if (expect_false (!next_sv))
1592 { 1563 {
1593 dSP; 1564 dSP;
1594 UNLOCK;
1595 1565
1596 ENTER; 1566 ENTER;
1597 SAVETMPS; 1567 SAVETMPS;
1598 1568
1599 PUSHMARK (SP); 1569 PUSHMARK (SP);
… …
1604 FREETMPS; 1574 FREETMPS;
1605 LEAVE; 1575 LEAVE;
1606 continue; 1576 continue;
1607 } 1577 }
1608 1578
1609 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE_hv (next_sv);
1610 1580
1611 /* cannot transfer to destroyed coros, skip and look for next */ 1581 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED)) 1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 { 1583 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv); 1584 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */ 1585 /* coro_nready has already been taken care of by destroy */
1617 continue; 1586 continue;
1618 } 1587 }
1619 1588
1620 --coro_nready; 1589 --coro_nready;
1621 UNLOCK;
1622 break; 1590 break;
1623 } 1591 }
1624 1592
1625 /* free this only after the transfer */ 1593 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1594 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv); 1595 ta->prev = SvSTATE_hv (prev_sv);
1628 TRANSFER_CHECK (*ta); 1596 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY; 1598 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1599 SvRV_set (coro_current, next_sv);
1632 1600
1633 LOCK;
1634 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1603}
1638 1604
1639INLINE void 1605INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1606prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1607{
… …
1720 else 1686 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1687 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1688 }
1723} 1689}
1724 1690
1725#if 0 1691/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */
1693
1694static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1695static const CV *slf_cv;
1696static SV **slf_argv;
1697static int slf_argc, slf_arga; /* count, allocated */
1698static I32 slf_ax; /* top of stack, for restore */
1699
1700/* this restores the stack in the case we patched the entersub, to */
1701/* recreate the stack frame as perl will on following calls */
1702/* since entersub cleared the stack */
1703static OP *
1704pp_restore (pTHX)
1705{
1706 int i;
1707 SV **SP = PL_stack_base + slf_ax;
1708
1709 PUSHMARK (SP);
1710
1711 EXTEND (SP, slf_argc + 1);
1712
1713 for (i = 0; i < slf_argc; ++i)
1714 PUSHs (sv_2mortal (slf_argv [i]));
1715
1716 PUSHs ((SV *)CvGV (slf_cv));
1717
1718 RETURNOP (slf_restore.op_first);
1719}
1720
1726static int 1721static void
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1728{ 1723{
1729 AV *padlist; 1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1730 AV *av = (AV *)mg->mg_obj;
1731
1732 abort ();
1733
1734 return 0;
1735} 1725}
1736 1726
1737static MGVTBL coro_gensub_vtbl = { 1727static void
1738 0, 0, 0, 0, 1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1729{
1740}; 1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1741#endif 1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{
1740 SV **arg = (SV **)slf_frame.data;
1741
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1743}
1744
1745static void
1746slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1747{
1748 if (items != 2)
1749 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1750
1751 frame->prepare = slf_prepare_transfer;
1752 frame->check = slf_check_nop;
1753 frame->data = (void *)arg; /* let's hope it will stay valid */
1754}
1755
1756static void
1757slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1758{
1759 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop;
1761}
1762
1763static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{
1766 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop;
1768}
1769
1770static void
1771slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772{
1773 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop;
1775}
1776
1777/* we hijack an hopefully unused CV flag for our purposes */
1778#define CVf_SLF 0x4000
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */
1863 if (expect_false (coro_throw))
1864 {
1865 SV *exception = sv_2mortal (coro_throw);
1866
1867 coro_throw = 0;
1868 sv_setsv (ERRSV, exception);
1869 croak (0);
1870 }
1871
1872 return NORMAL;
1873}
1874
1875static void
1876api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1877{
1878 int i;
1879 SV **arg = PL_stack_base + ax;
1880 int items = PL_stack_sp - arg + 1;
1881
1882 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1883
1884 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1885 && PL_op->op_ppaddr != pp_slf)
1886 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1887
1888 CvFLAGS (cv) |= CVf_SLF;
1889 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1890 slf_cv = cv;
1891
1892 /* we patch the op, and then re-run the whole call */
1893 /* we have to put the same argument on the stack for this to work */
1894 /* and this will be done by pp_restore */
1895 slf_restore.op_next = (OP *)&slf_restore;
1896 slf_restore.op_type = OP_CUSTOM;
1897 slf_restore.op_ppaddr = pp_restore;
1898 slf_restore.op_first = PL_op;
1899
1900 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1901
1902 if (PL_op->op_flags & OPf_STACKED)
1903 {
1904 if (items > slf_arga)
1905 {
1906 slf_arga = items;
1907 free (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *));
1909 }
1910
1911 slf_argc = items;
1912
1913 for (i = 0; i < items; ++i)
1914 slf_argv [i] = SvREFCNT_inc (arg [i]);
1915 }
1916 else
1917 slf_argc = 0;
1918
1919 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1921
1922 PL_op = (OP *)&slf_restore;
1923}
1742 1924
1743/*****************************************************************************/ 1925/*****************************************************************************/
1744/* PerlIO::cede */ 1926/* PerlIO::cede */
1745 1927
1746typedef struct 1928typedef struct
… …
1814 PerlIOBuf_get_cnt, 1996 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 1997 PerlIOBuf_set_ptrcnt,
1816}; 1998};
1817 1999
1818/*****************************************************************************/ 2000/*****************************************************************************/
2001/* Coro::Semaphore */
1819 2002
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP *
1831pp_restore (pTHX)
1832{
1833 dSP;
1834
1835 PUSHMARK (SP);
1836
1837 EXTEND (SP, 3);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844}
1845
1846static void 2003static void
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1848{ 2005{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); 2006 SV *count_sv = AvARRAY (av)[0];
1850} 2007 IV count = SvIVX (count_sv);
1851 2008
1852static void 2009 count += adjust;
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2010 SvIVX (count_sv) = count;
1854{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1856 2011
1857 frame->prepare = slf_prepare_set_stacklevel; 2012 /* now wake up as many waiters as are expected to lock */
1858 frame->check = slf_check_nop; 2013 while (count > 0 && AvFILLp (av) > 0)
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861
1862static void
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 {
1921 /* first iteration */
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926
1927 /* do a quick consistency check on the "function" object, and if it isn't */
1928 /* for us, divert to the real entersub */
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1930 return PL_ppaddr[OP_ENTERSUB](aTHX);
1931
1932 /* pop args */
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 {
1937 /* ampersand-form of call, use @_ instead of stack */
1938 AV *av = GvAV (PL_defgv);
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 }
1942
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2014 {
1973 if (sp == bot) 2015 SV *cb;
1974 XPUSHs (&PL_sv_undef);
1975 2016
1976 SP = bot + 1; 2017 /* swap first two elements so we can shift a waiter */
2018 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av);
2021
2022 if (SvOBJECT (cb))
2023 api_ready (aTHX_ cb);
2024 else
2025 croak ("callbacks not yet supported");
2026
2027 SvREFCNT_dec (cb);
2028
2029 --count;
1977 } 2030 }
1978
1979 PUTBACK;
1980 }
1981
1982 return NORMAL;
1983} 2031}
1984 2032
1985static void 2033static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2034coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2035{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2036 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2038}
2017
2018/*****************************************************************************/
2019 2039
2020static int 2040static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2022{ 2042{
2023 AV *av = (AV *)frame->data; 2043 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2044 SV *count_sv = AvARRAY (av)[0];
2025 2045
2026 if (SvIVX (count_sv) > 0) 2046 if (SvIVX (count_sv) > 0)
2027 { 2047 {
2048 SvSTATE_current->on_destroy = 0;
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2049 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2029 return 0; 2050 return 0;
2030 } 2051 }
2031 else 2052 else
2032 { 2053 {
… …
2043 return 1; 2064 return 1;
2044 } 2065 }
2045} 2066}
2046 2067
2047static void 2068static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2070{
2050 AV *av = (AV *)SvRV (arg [0]); 2071 AV *av = (AV *)SvRV (arg [0]);
2051 2072
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2073 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2074 {
2054 frame->data = (void *)av; 2075 frame->data = (void *)av;
2055 frame->prepare = prepare_nop; 2076 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2056 } 2078 }
2057 else 2079 else
2058 { 2080 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2081 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2082
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2084 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2090 }
2064 2091
2065 frame->check = slf_check_semaphore_down; 2092 frame->check = slf_check_semaphore_down;
2066 2093
2067} 2094}
2068 2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)newSV (0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120/* Coro::AIO */
2121
2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2123
2124/* helper storage struct */
2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
2131};
2132
2133static void
2134coro_aio_callback (pTHX_ CV *cv)
2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
2195 dSP;
2196 int i;
2197
2198 EXTEND (SP, AvFILLp (state) + 1);
2199 for (i = 0; i <= AvFILLp (state); ++i)
2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
2220 {
2221 dSP;
2222
2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
2238 }
2239
2240 /* now call the original request */
2241 {
2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
2245
2246 PUSHMARK (SP);
2247
2248 /* first push all args to the stack */
2249 EXTEND (SP, items + 1);
2250
2251 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]);
2253
2254 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256
2257 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 }
2261
2262 /* now that the requets is going, we loop toll we have a result */
2263 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req;
2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
2279
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2281
2071PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
2072 2283
2073BOOT: 2284BOOT:
2074{ 2285{
2075#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2287# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2288 coro_thx = PERL_GET_CONTEXT;
2079# endif 2289# endif
2080#endif 2290#endif
2081 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2311 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
2103 2313
2104 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2106 2328
2107 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2330 coroapi.rev = CORO_API_REVISION;
2109 2331
2110 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
… …
2158 RETVAL 2380 RETVAL
2159 2381
2160void 2382void
2161_set_stacklevel (...) 2383_set_stacklevel (...)
2162 CODE: 2384 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2164 2386
2165void 2387void
2166transfer (...) 2388transfer (...)
2167 PROTOTYPE: $$ 2389 PROTOTYPE: $$
2168 CODE: 2390 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2391 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2392
2171bool 2393bool
2172_destroy (SV *coro_sv) 2394_destroy (SV *coro_sv)
2173 CODE: 2395 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2292 2514
2293void 2515void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 2516throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 2517 PROTOTYPE: $;$
2296 CODE: 2518 CODE:
2519{
2520 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw;
2297 SvREFCNT_dec (self->throw); 2522 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524}
2299 2525
2300void 2526void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 2528 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 2529 C_ARGS: aTHX_ coro, flags
… …
2334 2560
2335void 2561void
2336force_cctx () 2562force_cctx ()
2337 PROTOTYPE: 2563 PROTOTYPE:
2338 CODE: 2564 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 2565 SvSTATE_current->cctx->idle_sp = 0;
2341 2566
2342void 2567void
2343swap_defsv (Coro::State self) 2568swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 2569 PROTOTYPE: $
2345 ALIAS: 2570 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 2579
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 2580 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 2581 }
2357 2582
2583
2358MODULE = Coro::State PACKAGE = Coro 2584MODULE = Coro::State PACKAGE = Coro
2359 2585
2360BOOT: 2586BOOT:
2361{ 2587{
2362 int i; 2588 int i;
… …
2398} 2624}
2399 2625
2400void 2626void
2401schedule (...) 2627schedule (...)
2402 CODE: 2628 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 2629 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2404 2630
2405void 2631void
2406cede (...) 2632cede (...)
2407 CODE: 2633 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 2634 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 2635
2410void 2636void
2411cede_notself (...) 2637cede_notself (...)
2412 CODE: 2638 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 2639 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 2640
2415void 2641void
2416_set_current (SV *current) 2642_set_current (SV *current)
2417 PROTOTYPE: $ 2643 PROTOTYPE: $
2418 CODE: 2644 CODE:
… …
2421 2647
2422void 2648void
2423_set_readyhook (SV *hook) 2649_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 2650 PROTOTYPE: $
2425 CODE: 2651 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 2652 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 2654
2431int 2655int
2432prio (Coro::State coro, int newprio = 0) 2656prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 2657 PROTOTYPE: $;$
2434 ALIAS: 2658 ALIAS:
… …
2470# for async_pool speedup 2694# for async_pool speedup
2471void 2695void
2472_pool_1 (SV *cb) 2696_pool_1 (SV *cb)
2473 CODE: 2697 CODE:
2474{ 2698{
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current); 2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2477 AV *defav = GvAV (PL_defgv); 2701 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av; 2703 AV *invoke_av;
2480 int i, len; 2704 int i, len;
2481 2705
… …
2508 2732
2509void 2733void
2510_pool_2 (SV *cb) 2734_pool_2 (SV *cb)
2511 CODE: 2735 CODE:
2512{ 2736{
2513 struct coro *coro = SvSTATE (coro_current); 2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv);
2514 2739
2515 sv_setsv (cb, &PL_sv_undef); 2740 sv_setsv (cb, &PL_sv_undef);
2516 2741
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0; 2743 coro->saved_deffh = 0;
… …
2525 SvREFCNT_dec (old); 2750 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n"); 2751 croak ("\3async_pool terminate\2\n");
2527 } 2752 }
2528 2753
2529 av_clear (GvAV (PL_defgv)); 2754 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2755 hv_store (hv, "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532 2757
2533 coro->prio = 0; 2758 coro->prio = 0;
2534 2759
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0); 2761 api_trace (aTHX_ coro_current, 0);
2537 2762
2538 av_push (av_async_pool, newSVsv (coro_current)); 2763 av_push (av_async_pool, newSVsv (coro_current));
2539} 2764}
2540 2765
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT:
2585 RETVAL
2586
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void
2593_get_state (SV *self)
2594 PROTOTYPE: $
2595 PPCODE:
2596{
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621
2622void
2623_set_state (SV *state)
2624 PROTOTYPE: $
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647SV *
2648_schedule (...)
2649 CODE:
2650{
2651 static int incede;
2652
2653 api_cede_notself (aTHX);
2654
2655 ++incede;
2656 while (coro_nready >= incede && api_cede (aTHX))
2657 ;
2658
2659 sv_setsv (sv_activity, &PL_sv_undef);
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667
2668 --incede;
2669}
2670
2671 2766
2672MODULE = Coro::State PACKAGE = PerlIO::cede 2767MODULE = Coro::State PACKAGE = PerlIO::cede
2673 2768
2674BOOT: 2769BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2770 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2771
2676 2772
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 2773MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 2774
2679SV * 2775SV *
2680new (SV *klass, SV *count_ = 0) 2776new (SV *klass, SV *count_ = 0)
2681 CODE: 2777 CODE:
2682{ 2778{
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2684 AV *av = newAV (); 2780 AV *av = newAV ();
2781 SV **ary;
2782
2783 /* unfortunately, building manually saves memory */
2784 Newx (ary, 2, SV *);
2785 AvALLOC (av) = ary;
2786 AvARRAY (av) = ary;
2787 AvMAX (av) = 1;
2788 AvFILLp (av) = 0;
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 2789 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2790
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 2791 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2687} 2792}
2688 OUTPUT: 2793 OUTPUT:
2689 RETVAL 2794 RETVAL
2690 2795
… …
2698void 2803void
2699up (SV *self, int adjust = 1) 2804up (SV *self, int adjust = 1)
2700 ALIAS: 2805 ALIAS:
2701 adjust = 1 2806 adjust = 1
2702 CODE: 2807 CODE:
2703{ 2808 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 2809
2730void 2810void
2731down (SV *self) 2811down (SV *self)
2732 CODE: 2812 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 2813 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2734 2814
2735void 2815void
2736try (SV *self) 2816try (SV *self)
2737 PPCODE: 2817 PPCODE:
2738{ 2818{
… …
2765 for (i = 1; i <= AvFILLp (av); ++i) 2845 for (i = 1; i <= AvFILLp (av); ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 2846 PUSHs (newSVsv (AvARRAY (av)[i]));
2767 } 2847 }
2768} 2848}
2769 2849
2850
2851MODULE = Coro::State PACKAGE = Coro::AnyEvent
2852
2853BOOT:
2854 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2855
2856void
2857_schedule (...)
2858 CODE:
2859{
2860 static int incede;
2861
2862 api_cede_notself (aTHX);
2863
2864 ++incede;
2865 while (coro_nready >= incede && api_cede (aTHX))
2866 ;
2867
2868 sv_setsv (sv_activity, &PL_sv_undef);
2869 if (coro_nready >= incede)
2870 {
2871 PUSHMARK (SP);
2872 PUTBACK;
2873 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2874 SPAGAIN;
2875 }
2876
2877 --incede;
2878}
2879
2880
2881MODULE = Coro::State PACKAGE = Coro::AIO
2882
2883void
2884_register (char *target, char *proto, SV *req)
2885 CODE:
2886{
2887 HV *st;
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894}
2895

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