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Comparing Coro/Coro/State.xs (file contents):
Revision 1.275 by root, Sat Nov 15 06:26:52 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC

… …
142#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
143 143
144#include "CoroAPI.h" 144#include "CoroAPI.h"
145 145
146#ifdef USE_ITHREADS 146#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 147# if CORO_PTHREAD
152static void *coro_thx; 148static void *coro_thx;
153# endif 149# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 150#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};
176 151
177static double (*nvtime)(); /* so why doesn't it take void? */ 152static double (*nvtime)(); /* so why doesn't it take void? */
178 153
179static U32 cctx_gen; 154static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 158static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 161
188static GV *irsgv; /* $/ */ 162static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 163static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 164static SV *rv_diehook;
191static SV *rv_warnhook; 165static SV *rv_warnhook;
… …
257/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
258struct coro { 232struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 234 coro_cctx *cctx;
261 235
262 /* process data */ 236 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 237 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 238 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
266 240
267 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
271 246
272 /* statistics */ 247 /* statistics */
273 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
274 249
275 /* coro process data */ 250 /* coro process data */
… …
284}; 259};
285 260
286typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
288 263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
290 269
291/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
292 271
293#define PRIO_MAX 3 272#define PRIO_MAX 3
294#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 375
397 return 0; 376 return 0;
398} 377}
399 378
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 381
403static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 383 0, 0, 0, 0,
405 coro_cv_free 384 coro_cv_free
406}; 385};
407 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
408#define CORO_MAGIC(sv, type) \ 392#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 395 : 0)
414 396
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 399
418INLINE struct coro * 400INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
420{ 402{
421 HV *stash; 403 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
440} 422}
441 423
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 429
444/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
445static void 431static void
446get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
447{ 433{
… …
515 } 501 }
516 502
517 PUTBACK; 503 PUTBACK;
518 } 504 }
519 505
520 slf_frame = c->slf_frame; 506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
521} 508}
522 509
523static void 510static void
524save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
525{ 512{
513 c->throw = coro_throw;
526 c->slf_frame = slf_frame; 514 c->slf_frame = slf_frame;
527 515
528 { 516 {
529 dSP; 517 dSP;
530 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
… …
811 799
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 801}
814 802
815static void 803static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 804prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 805{
818 /* kind of mega-hacky, but works */ 806 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 807 ta->next = ta->prev = (struct coro *)ta;
820} 808}
821 809
822static int 810static int
823slf_check_nop (aTHX) 811slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 812{
825 return 0; 813 return 0;
826} 814}
827 815
828static void 816static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
830{ 818{
831 /* 819 /*
832 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
833 */ 821 */
… …
876 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 866 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 867 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 */ 868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
869
870 coro_throw = coro->throw;
881} 871}
882 872
883static void 873static void
884coro_destruct (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
885{ 875{
… …
909 899
910 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
912 902
913 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
915 905
916 coro_destruct_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
917} 907}
918 908
919INLINE void 909INLINE void
… …
929static int 919static int
930runops_trace (pTHX) 920runops_trace (pTHX)
931{ 921{
932 COP *oldcop = 0; 922 COP *oldcop = 0;
933 int oldcxix = -2; 923 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
936 926
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 928 {
939 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
1088 1078
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1079/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1080INLINE void
1091transfer_tail (pTHX) 1081transfer_tail (pTHX)
1092{ 1082{
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); 1083 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} 1084}
1109 1085
1110/* 1086/*
1111 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1088 */
… …
1127 1103
1128 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
1130 1106
1131 /* cctx_run is the alternative tail of transfer() */ 1107 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1108 transfer_tail (aTHX);
1134 1109
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1110 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1111 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1112 perl_run (PL_curinterp);
… …
1293/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1294 1269
1295static void 1270static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1298 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1299 { 1276 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 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,"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302 1279
… …
1312#endif 1289#endif
1313 } 1290 }
1314} 1291}
1315 1292
1316/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1317static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1296{
1320 dSTACKLEVEL; 1297 dSTACKLEVEL;
1321 1298
1322 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1300 if (expect_false (!next))
1324 { 1301 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1302 ((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 */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1304 }
1328 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1329 { 1306 {
1330 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
… …
1337 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1338 } 1315 }
1339 1316
1340 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1319
1345 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1347 1322
1348 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1357 1332
1358 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1359 1334
1360 /* possibly untie and reuse the cctx */ 1335 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1336 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1337 prev__cctx->idle_sp == (void *)stacklevel
1363 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx 1339 && !force_cctx
1365 )) 1340 ))
1366 { 1341 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1381 ++next->usecount; 1356 ++next->usecount;
1382 1357
1383 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1384 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1385 1360
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)) 1361 if (expect_false (prev__cctx != next->cctx))
1390 { 1362 {
1391 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1406coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1379{
1408 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1409 return 0; 1381 return 0;
1410 1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1385
1411 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1412 1387
1413 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1414 { 1389 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1392 --coro_nready;
1419 UNLOCK;
1420 } 1393 }
1421 else 1394 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1396
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1502 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1503} 1476}
1504 1477
1505/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1506 1479
1507static void 1480INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1509{ 1482{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1484}
1512 1485
1513static SV * 1486INLINE SV *
1514coro_deq (pTHX) 1487coro_deq (pTHX)
1515{ 1488{
1516 int prio; 1489 int prio;
1517 1490
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1538 return 0; 1511 return 0;
1539 1512
1540 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1541 1514
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1517
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1518 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1519 ++coro_nready;
1549 1520
1550 UNLOCK;
1551
1552 if (sv_hook) 1521 if (sv_hook)
1553 { 1522 {
1554 dSP; 1523 dSP;
1555 1524
1556 ENTER; 1525 ENTER;
… …
1582{ 1551{
1583 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1584 1553
1585 for (;;) 1554 for (;;)
1586 { 1555 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1589 1557
1590 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1592 { 1560 {
1593 dSP; 1561 dSP;
1594 UNLOCK;
1595 1562
1596 ENTER; 1563 ENTER;
1597 SAVETMPS; 1564 SAVETMPS;
1598 1565
1599 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1604 FREETMPS; 1571 FREETMPS;
1605 LEAVE; 1572 LEAVE;
1606 continue; 1573 continue;
1607 } 1574 }
1608 1575
1609 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1610 1577
1611 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 { 1580 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1617 continue; 1583 continue;
1618 } 1584 }
1619 1585
1620 --coro_nready; 1586 --coro_nready;
1621 UNLOCK;
1622 break; 1587 break;
1623 } 1588 }
1624 1589
1625 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1628 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1632 1597
1633 LOCK;
1634 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1600}
1638 1601
1639INLINE void 1602INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1604{
… …
1720 else 1683 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1685 }
1723} 1686}
1724 1687
1725#if 0 1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1726static int 1718static void
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1728{ 1720{
1729 AV *padlist; 1721 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} 1722}
1736 1723
1737static MGVTBL coro_gensub_vtbl = { 1724static void
1738 0, 0, 0, 0, 1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1726{
1740}; 1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1741#endif 1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1742 1921
1743/*****************************************************************************/ 1922/*****************************************************************************/
1744/* PerlIO::cede */ 1923/* PerlIO::cede */
1745 1924
1746typedef struct 1925typedef struct
… …
1814 PerlIOBuf_get_cnt, 1993 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 1994 PerlIOBuf_set_ptrcnt,
1816}; 1995};
1817 1996
1818/*****************************************************************************/ 1997/*****************************************************************************/
1998/* Coro::Semaphore */
1819 1999
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 2000static void
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1848{ 2002{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); 2003 SV *count_sv = AvARRAY (av)[0];
1850} 2004 IV count = SvIVX (count_sv);
1851 2005
1852static void 2006 count += adjust;
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2007 SvIVX (count_sv) = count;
1854{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1856 2008
1857 frame->prepare = slf_prepare_set_stacklevel; 2009 /* now wake up as many waiters as are expected to lock */
1858 frame->check = slf_check_nop; 2010 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 { 2011 {
1973 if (sp == bot) 2012 SV *cb;
1974 XPUSHs (&PL_sv_undef);
1975 2013
1976 SP = bot + 1; 2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
1977 } 2027 }
1978
1979 PUTBACK;
1980 }
1981
1982 return NORMAL;
1983} 2028}
1984 2029
1985static void 2030static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2032{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2034 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} 2035}
2017
2018/*****************************************************************************/
2019 2036
2020static int 2037static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2022{ 2039{
2023 AV *av = (AV *)frame->data; 2040 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2041 SV *count_sv = AvARRAY (av)[0];
2025 2042
2026 if (SvIVX (count_sv) > 0) 2043 if (SvIVX (count_sv) > 0)
2027 { 2044 {
2045 SvSTATE_current->on_destroy = 0;
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2029 return 0; 2047 return 0;
2030 } 2048 }
2031 else 2049 else
2032 { 2050 {
… …
2043 return 1; 2061 return 1;
2044 } 2062 }
2045} 2063}
2046 2064
2047static void 2065static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2067{
2050 AV *av = (AV *)SvRV (arg [0]); 2068 AV *av = (AV *)SvRV (arg [0]);
2051 2069
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2071 {
2054 frame->data = (void *)av; 2072 frame->data = (void *)av;
2055 frame->prepare = prepare_nop; 2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2056 } 2075 }
2057 else 2076 else
2058 { 2077 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2079
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2087 }
2064 2088
2065 frame->check = slf_check_semaphore_down; 2089 frame->check = slf_check_semaphore_down;
2066 2090
2067} 2091}
2068 2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
2192 dSP;
2193 int i;
2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
2243 PUSHMARK (SP);
2244
2245 /* first push all args to the stack */
2246 EXTEND (SP, items + 1);
2247
2248 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]);
2250
2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253
2254 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 }
2258
2259 /* now that the requets is going, we loop toll we have a result */
2260 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req;
2263}
2264
2265static void
2266coro_aio_req_xs (pTHX_ CV *cv)
2267{
2268 dVAR;
2269 dXSARGS;
2270
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272
2273 XSRETURN_EMPTY;
2274}
2275
2276/*****************************************************************************/
2277
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2279
2071PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
2072 2281
2073BOOT: 2282BOOT:
2074{ 2283{
2075#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2285# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2286 coro_thx = PERL_GET_CONTEXT;
2079# endif 2287# endif
2080#endif 2288#endif
2081 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2309 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
2103 2311
2104 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2106 2326
2107 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2109 2329
2110 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
… …
2158 RETVAL 2378 RETVAL
2159 2379
2160void 2380void
2161_set_stacklevel (...) 2381_set_stacklevel (...)
2162 CODE: 2382 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2164 2384
2165void 2385void
2166transfer (...) 2386transfer (...)
2387 PROTOTYPE: $$
2167 CODE: 2388 CODE:
2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2389 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2169 2390
2170bool 2391bool
2171_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
2172 CODE: 2393 CODE:
2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2291 2512
2292void 2513void
2293throw (Coro::State self, SV *throw = &PL_sv_undef) 2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2294 PROTOTYPE: $;$ 2515 PROTOTYPE: $;$
2295 CODE: 2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2296 SvREFCNT_dec (self->throw); 2520 SvREFCNT_dec (*throwp);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2298 2523
2299void 2524void
2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$ 2526 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags 2527 C_ARGS: aTHX_ coro, flags
… …
2333 2558
2334void 2559void
2335force_cctx () 2560force_cctx ()
2336 PROTOTYPE: 2561 PROTOTYPE:
2337 CODE: 2562 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2340 2564
2341void 2565void
2342swap_defsv (Coro::State self) 2566swap_defsv (Coro::State self)
2343 PROTOTYPE: $ 2567 PROTOTYPE: $
2344 ALIAS: 2568 ALIAS:
… …
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353 2577
2354 SV *tmp = *src; *src = *dst; *dst = tmp; 2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 } 2579 }
2356 2580
2581
2357MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
2358 2583
2359BOOT: 2584BOOT:
2360{ 2585{
2361 int i; 2586 int i;
… …
2397} 2622}
2398 2623
2399void 2624void
2400schedule (...) 2625schedule (...)
2401 CODE: 2626 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2403 2628
2404void 2629void
2405cede (...) 2630cede (...)
2406 CODE: 2631 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2408 2633
2409void 2634void
2410cede_notself (...) 2635cede_notself (...)
2411 CODE: 2636 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2413 2638
2414void 2639void
2415_set_current (SV *current) 2640_set_current (SV *current)
2416 PROTOTYPE: $ 2641 PROTOTYPE: $
2417 CODE: 2642 CODE:
… …
2420 2645
2421void 2646void
2422_set_readyhook (SV *hook) 2647_set_readyhook (SV *hook)
2423 PROTOTYPE: $ 2648 PROTOTYPE: $
2424 CODE: 2649 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook); 2650 SvREFCNT_dec (coro_readyhook);
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2428 UNLOCK;
2429 2652
2430int 2653int
2431prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$ 2655 PROTOTYPE: $;$
2433 ALIAS: 2656 ALIAS:
… …
2469# for async_pool speedup 2692# for async_pool speedup
2470void 2693void
2471_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
2472 CODE: 2695 CODE:
2473{ 2696{
2474 struct coro *coro = SvSTATE (coro_current);
2475 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2476 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2478 AV *invoke_av; 2701 AV *invoke_av;
2479 int i, len; 2702 int i, len;
2480 2703
… …
2507 2730
2508void 2731void
2509_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
2510 CODE: 2733 CODE:
2511{ 2734{
2512 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
2513 2737
2514 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
2515 2739
2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2517 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
… …
2524 SvREFCNT_dec (old); 2748 SvREFCNT_dec (old);
2525 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
2526 } 2750 }
2527 2751
2528 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2531 2755
2532 coro->prio = 0; 2756 coro->prio = 0;
2533 2757
2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2535 api_trace (aTHX_ coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
2536 2760
2537 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
2538} 2762}
2539 2763
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT:
2584 RETVAL
2585
2586#endif
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void
2592_get_state (SV *self)
2593 PROTOTYPE: $
2594 PPCODE:
2595{
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603
2604 data->errorno = errno;
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646SV *
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669
2670 2764
2671MODULE = Coro::State PACKAGE = PerlIO::cede 2765MODULE = Coro::State PACKAGE = PerlIO::cede
2672 2766
2673BOOT: 2767BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2769
2675 2770
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 2772
2678SV * 2773SV *
2679new (SV *klass, SV *count_ = 0) 2774new (SV *klass, SV *count_ = 0)
… …
2697void 2792void
2698up (SV *self, int adjust = 1) 2793up (SV *self, int adjust = 1)
2699 ALIAS: 2794 ALIAS:
2700 adjust = 1 2795 adjust = 1
2701 CODE: 2796 CODE:
2702{ 2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728 2798
2729void 2799void
2730down (SV *self) 2800down (SV *self)
2731 CODE: 2801 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items); 2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2733 2803
2734void 2804void
2735try (SV *self) 2805try (SV *self)
2736 PPCODE: 2806 PPCODE:
2737{ 2807{
… …
2764 for (i = 1; i <= AvFILLp (av); ++i) 2834 for (i = 1; i <= AvFILLp (av); ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i])); 2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2766 } 2836 }
2767} 2837}
2768 2838
2839
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841
2842BOOT:
2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2844
2845void
2846_schedule (...)
2847 CODE:
2848{
2849 static int incede;
2850
2851 api_cede_notself (aTHX);
2852
2853 ++incede;
2854 while (coro_nready >= incede && api_cede (aTHX))
2855 ;
2856
2857 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede)
2859 {
2860 PUSHMARK (SP);
2861 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2863 SPAGAIN;
2864 }
2865
2866 --incede;
2867}
2868
2869
2870MODULE = Coro::State PACKAGE = Coro::AIO
2871
2872void
2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2882

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