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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 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
148	static 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
152	static void *coro_thx;	151	static 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 */
168	struct 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
177	static double (*nvtime)(); /* so why doesn't it take void? */	155	static double (*nvtime)(); /* so why doesn't it take void? */
178		156
179	static U32 cctx_gen;	157	static U32 cctx_gen;
180	static size_t cctx_stacksize = CORO_STACKSIZE;	158	static size_t cctx_stacksize = CORO_STACKSIZE;
181	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
182	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
183	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
184	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	163	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;
187		164
188	static GV *irsgv; /* $/ */	165	static GV *irsgv; /* $/ */
189	static GV *stdoutgv; /* *STDOUT */	166	static GV *stdoutgv; /* *STDOUT */
190	static SV *rv_diehook;	167	static SV *rv_diehook;
191	static SV *rv_warnhook;	168	static SV *rv_warnhook;
…		…
252	#undef VAR	229	#undef VAR
253	} perl_slots;	230	} perl_slots;
254		231
255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	232	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256		233
257	/* this is the per-perl-coro slf frame info */
258	/* it is treated like other "global" interpreter data */
259	/* and unfortunately is copied around, so kepe it small */
260	struct slf_frame
261	{
262	void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */
263	int (*check) (pTHX);
264	};
265
266	/* this is a structure representing a perl-level coroutine */	234	/* this is a structure representing a perl-level coroutine */
267	struct coro {	235	struct coro {
268	/* the C coroutine allocated to this perl coroutine, if any */	236	/* the C coroutine allocated to this perl coroutine, if any */
269	coro_cctx *cctx;	237	coro_cctx *cctx;
270		238
271	/* process data */	239	/* state data */
272	struct slf_frame slf_frame; /* saved slf frame */	240	struct CoroSLF slf_frame; /* saved slf frame */
273	void *slf_data;
274	AV *mainstack;	241	AV *mainstack;
275	perl_slots *slot; /* basically the saved sp */	242	perl_slots *slot; /* basically the saved sp */
276		243
277	AV *args; /* data associated with this coroutine (initial args) */	244	AV *args; /* data associated with this coroutine (initial args) */
278	int refcnt; /* coroutines are refcounted, yes */	245	int refcnt; /* coroutines are refcounted, yes */
279	int flags; /* CF_ flags */	246	int flags; /* CF_ flags */
280	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);
281		249
282	/* statistics */	250	/* statistics */
283	int usecount; /* number of transfers to this coro */	251	int usecount; /* number of transfers to this coro */
284		252
285	/* coro process data */	253	/* coro process data */
…		…
294	};	262	};
295		263
296	typedef struct coro *Coro__State;	264	typedef struct coro *Coro__State;
297	typedef struct coro *Coro__State_or_hashref;	265	typedef struct coro *Coro__State_or_hashref;
298		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 */
299	static struct slf_frame slf_frame; /* the current slf frame */	270	static struct CoroSLF slf_frame; /* the current slf frame */
		271	static SV *coro_throw;
300		272
301	/** Coro ********************************************************************/	273	/** Coro ********************************************************************/
302		274
303	#define PRIO_MAX 3	275	#define PRIO_MAX 3
304	#define PRIO_HIGH 1	276	#define PRIO_HIGH 1
…		…
405	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	377	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
406		378
407	return 0;	379	return 0;
408	}	380	}
409		381
410	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	382	#define CORO_MAGIC_type_cv 26
411	#define CORO_MAGIC_type_state PERL_MAGIC_ext	383	#define CORO_MAGIC_type_state PERL_MAGIC_ext
412		384
413	static MGVTBL coro_cv_vtbl = {	385	static MGVTBL coro_cv_vtbl = {
414	0, 0, 0, 0,	386	0, 0, 0, 0,
415	coro_cv_free	387	coro_cv_free
416	};	388	};
417		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
418	#define CORO_MAGIC(sv, type) \	395	#define CORO_MAGIC(sv, type) \
419	SvMAGIC (sv) \	396	(expect_true (SvMAGIC (sv)) \
420	? SvMAGIC (sv)->mg_type == type \	397	? CORO_MAGIC_NN (sv, type) \
421	? SvMAGIC (sv) \
422	: mg_find (sv, type) \
423	: 0	398	: 0)
424		399
425	#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)
426	#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)
427		402
428	INLINE struct coro *	403	INLINE struct coro *
429	SvSTATE_ (pTHX_ SV *coro)	404	SvSTATE_ (pTHX_ SV *coro)
430	{	405	{
431	HV *stash;	406	HV *stash;
…		…
448	mg = CORO_MAGIC_state (coro);	423	mg = CORO_MAGIC_state (coro);
449	return (struct coro *)mg->mg_ptr;	424	return (struct coro *)mg->mg_ptr;
450	}	425	}
451		426
452	#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))
453		432
454	/* the next two functions merely cache the padlists */	433	/* the next two functions merely cache the padlists */
455	static void	434	static void
456	get_padlist (pTHX_ CV *cv)	435	get_padlist (pTHX_ CV *cv)
457	{	436	{
…		…
525	}	504	}
526		505
527	PUTBACK;	506	PUTBACK;
528	}	507	}
529		508
530	slf_frame = c->slf_frame;	509	slf_frame = c->slf_frame;
531	coroapi.slf_data = c->slf_data;	510	coro_throw = c->throw;
532	}	511	}
533		512
534	static void	513	static void
535	save_perl (pTHX_ Coro__State c)	514	save_perl (pTHX_ Coro__State c)
536	{	515	{
537	c->slf_data = coroapi.slf_data;	516	c->throw = coro_throw;
538	c->slf_frame = slf_frame;	517	c->slf_frame = slf_frame;
539		518
540	{	519	{
541	dSP;	520	dSP;
542	I32 cxix = cxstack_ix;	521	I32 cxix = cxstack_ix;
…		…
823		802
824	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825	}	804	}
826		805
827	static void	806	static void
828	prepare_nop (aTHX_ struct coro_transfer_args *ta)	807	prepare_nop (pTHX_ struct coro_transfer_args *ta)
829	{	808	{
830	/* kind of mega-hacky, but works */	809	/* kind of mega-hacky, but works */
831	ta->next = ta->prev = (struct coro *)ta;	810	ta->next = ta->prev = (struct coro *)ta;
832	}	811	}
833		812
834	static int	813	static int
835	slf_check_nop (aTHX)	814	slf_check_nop (pTHX_ struct CoroSLF *frame)
836	{	815	{
837	return 0;	816	return 0;
838	}	817	}
839		818
840	static void	819	static void NOINLINE /* noinline to keep it out of the transfer fast path */
841	coro_setup (pTHX_ struct coro *coro)	820	coro_setup (pTHX_ struct coro *coro)
842	{	821	{
843	/*	822	/*
844	* emulate part of the perl startup here.	823	* emulate part of the perl startup here.
845	*/	824	*/
…		…
888	/* 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
889	* 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.
890	*/	869	*/
891	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 */
892	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;
893	}	874	}
894		875
895	static void	876	static void
896	coro_destruct (pTHX_ struct coro *coro)	877	coro_destruct (pTHX_ struct coro *coro)
897	{	878	{
…		…
921		902
922	SvREFCNT_dec (PL_diehook);	903	SvREFCNT_dec (PL_diehook);
923	SvREFCNT_dec (PL_warnhook);	904	SvREFCNT_dec (PL_warnhook);
924		905
925	SvREFCNT_dec (coro->saved_deffh);	906	SvREFCNT_dec (coro->saved_deffh);
926	SvREFCNT_dec (coro->throw);	907	SvREFCNT_dec (coro_throw);
927		908
928	coro_destruct_stacks (aTHX);	909	coro_destruct_stacks (aTHX);
929	}	910	}
930		911
931	INLINE void	912	INLINE void
…		…
941	static int	922	static int
942	runops_trace (pTHX)	923	runops_trace (pTHX)
943	{	924	{
944	COP *oldcop = 0;	925	COP *oldcop = 0;
945	int oldcxix = -2;	926	int oldcxix = -2;
946	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 */
947	coro_cctx *cctx = coro->cctx;	928	coro_cctx *cctx = coro->cctx;
948		929
949	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	930	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950	{	931	{
951	PERL_ASYNC_CHECK ();	932	PERL_ASYNC_CHECK ();
…		…
1100		1081
1101	/* 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 */
1102	INLINE void	1083	INLINE void
1103	transfer_tail (pTHX)	1084	transfer_tail (pTHX)
1104	{	1085	{
1105	struct coro *next = (struct coro *)transfer_next;
1106	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109	free_coro_mortal (aTHX);	1086	free_coro_mortal (aTHX);
1110	UNLOCK;
1111
1112	if (expect_false (next->throw))
1113	{
1114	SV *exception = sv_2mortal (next->throw);
1115
1116	next->throw = 0;
1117	sv_setsv (ERRSV, exception);
1118	croak (0);
1119	}
1120	}	1087	}
1121		1088
1122	/*	1089	/*
1123	* this is a _very_ stripped down perl interpreter ;)	1090	* this is a _very_ stripped down perl interpreter ;)
1124	*/	1091	*/
…		…
1139		1106
1140	/* inject a fake subroutine call to cctx_init */	1107	/* inject a fake subroutine call to cctx_init */
1141	cctx_prepare (aTHX_ (coro_cctx *)arg);	1108	cctx_prepare (aTHX_ (coro_cctx *)arg);
1142		1109
1143	/* cctx_run is the alternative tail of transfer() */	1110	/* cctx_run is the alternative tail of transfer() */
1144	/* TODO: throwing an exception here might be deadly, VERIFY */
1145	transfer_tail (aTHX);	1111	transfer_tail (aTHX);
1146		1112
1147	/* 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 */
1148	PL_restartop = PL_op;	1114	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1115	perl_run (PL_curinterp);
…		…
1305	/** coroutine switching *****************************************************/	1271	/** coroutine switching *****************************************************/
1306		1272
1307	static void	1273	static void
1308	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1274	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309	{	1275	{
		1276	/* TODO: throwing up here is considered harmful */
		1277
1310	if (expect_true (prev != next))	1278	if (expect_true (prev != next))
1311	{	1279	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1280	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1281	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1282
1315	if (expect_false (next->flags & CF_RUNNING))	1283	if (expect_false (next->flags & CF_RUNNING))
1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1284	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1285
1318	if (expect_false (next->flags & CF_DESTROYED))	1286	if (expect_false (next->flags & CF_DESTROYED))
1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1287	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1288
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1289	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1290	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1291	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1292	#endif
1325	}	1293	}
1326	}	1294	}
1327		1295
1328	/* always use the TRANSFER macro */	1296	/* always use the TRANSFER macro */
1329	static void NOINLINE	1297	static void NOINLINE /* noinline so we have a fixed stackframe */
1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1298	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331	{	1299	{
1332	dSTACKLEVEL;	1300	dSTACKLEVEL;
1333		1301
1334	/* sometimes transfer is only called to set idle_sp */	1302	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1303	if (expect_false (!next))
1336	{	1304	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1305	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1306	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339	}	1307	}
1340	else if (expect_true (prev != next))	1308	else if (expect_true (prev != next))
1341	{	1309	{
1342	coro_cctx *prev__cctx;	1310	coro_cctx *prev__cctx;
…		…
1349	prev->flags |= CF_RUNNING;	1317	prev->flags |= CF_RUNNING;
1350	}	1318	}
1351		1319
1352	prev->flags &= ~CF_RUNNING;	1320	prev->flags &= ~CF_RUNNING;
1353	next->flags |= CF_RUNNING;	1321	next->flags |= CF_RUNNING;
1354
1355	LOCK;
1356		1322
1357	/* first get rid of the old state */	1323	/* first get rid of the old state */
1358	save_perl (aTHX_ prev);	1324	save_perl (aTHX_ prev);
1359		1325
1360	if (expect_false (next->flags & CF_NEW))	1326	if (expect_false (next->flags & CF_NEW))
…		…
1369		1335
1370	prev__cctx = prev->cctx;	1336	prev__cctx = prev->cctx;
1371		1337
1372	/* possibly untie and reuse the cctx */	1338	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1339	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1340	prev__cctx->idle_sp == (void *)stacklevel
1375	&& !(prev__cctx->flags & CC_TRACE)	1341	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1342	&& !force_cctx
1377	))	1343	))
1378	{	1344	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1345	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1393	++next->usecount;	1359	++next->usecount;
1394		1360
1395	if (expect_true (!next->cctx))	1361	if (expect_true (!next->cctx))
1396	next->cctx = cctx_get (aTHX);	1362	next->cctx = cctx_get (aTHX);
1397		1363
1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399	transfer_next = next;
1400
1401	if (expect_false (prev__cctx != next->cctx))	1364	if (expect_false (prev__cctx != next->cctx))
1402	{	1365	{
1403	prev__cctx->top_env = PL_top_env;	1366	prev__cctx->top_env = PL_top_env;
1404	PL_top_env = next->cctx->top_env;	1367	PL_top_env = next->cctx->top_env;
1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1368	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1418	coro_state_destroy (pTHX_ struct coro *coro)	1381	coro_state_destroy (pTHX_ struct coro *coro)
1419	{	1382	{
1420	if (coro->flags & CF_DESTROYED)	1383	if (coro->flags & CF_DESTROYED)
1421	return 0;	1384	return 0;
1422		1385
		1386	if (coro->on_destroy)
		1387	coro->on_destroy (aTHX_ coro);
		1388
1423	coro->flags |= CF_DESTROYED;	1389	coro->flags |= CF_DESTROYED;
1424		1390
1425	if (coro->flags & CF_READY)	1391	if (coro->flags & CF_READY)
1426	{	1392	{
1427	/* reduce nready, as destroying a ready coro effectively unreadies it */	1393	/* reduce nready, as destroying a ready coro effectively unreadies it */
1428	/* alternative: look through all ready queues and remove the coro */	1394	/* alternative: look through all ready queues and remove the coro */
1429	LOCK;
1430	--coro_nready;	1395	--coro_nready;
1431	UNLOCK;
1432	}	1396	}
1433	else	1397	else
1434	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1398	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435		1399
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1400	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1401	{
1438	struct coro temp;	1402	struct coro temp;
1439		1403
1440	if (coro->flags & CF_RUNNING)	1404	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1405
1443	save_perl (aTHX_ &temp);	1406	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1407	load_perl (aTHX_ coro);
1445		1408
1446	coro_destruct (aTHX_ coro);	1409	coro_destruct (aTHX_ coro);
…		…
1515	TRANSFER (ta, 1);	1478	TRANSFER (ta, 1);
1516	}	1479	}
1517		1480
1518	/** Coro ********************************************************************/	1481	/** Coro ********************************************************************/
1519		1482
1520	static void	1483	INLINE void
1521	coro_enq (pTHX_ SV *coro_sv)	1484	coro_enq (pTHX_ struct coro *coro)
1522	{	1485	{
1523	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1486	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524	}	1487	}
1525		1488
1526	static SV *	1489	INLINE SV *
1527	coro_deq (pTHX)	1490	coro_deq (pTHX)
1528	{	1491	{
1529	int prio;	1492	int prio;
1530		1493
1531	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1494	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1550	if (coro->flags & CF_READY)	1513	if (coro->flags & CF_READY)
1551	return 0;	1514	return 0;
1552		1515
1553	coro->flags |= CF_READY;	1516	coro->flags |= CF_READY;
1554		1517
1555	LOCK;
1556
1557	sv_hook = coro_nready ? 0 : coro_readyhook;	1518	sv_hook = coro_nready ? 0 : coro_readyhook;
1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1519	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559		1520
1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1521	coro_enq (aTHX_ coro);
1561	++coro_nready;	1522	++coro_nready;
1562		1523
1563	UNLOCK;
1564
1565	if (sv_hook)	1524	if (sv_hook)
1566	{	1525	{
1567	dSP;	1526	dSP;
1568		1527
1569	ENTER;	1528	ENTER;
…		…
1595	{	1554	{
1596	SV *prev_sv, *next_sv;	1555	SV *prev_sv, *next_sv;
1597		1556
1598	for (;;)	1557	for (;;)
1599	{	1558	{
1600	LOCK;
1601	next_sv = coro_deq (aTHX);	1559	next_sv = coro_deq (aTHX);
1602		1560
1603	/* nothing to schedule: call the idle handler */	1561	/* nothing to schedule: call the idle handler */
1604	if (expect_false (!next_sv))	1562	if (expect_false (!next_sv))
1605	{	1563	{
1606	dSP;	1564	dSP;
1607	UNLOCK;
1608		1565
1609	ENTER;	1566	ENTER;
1610	SAVETMPS;	1567	SAVETMPS;
1611		1568
1612	PUSHMARK (SP);	1569	PUSHMARK (SP);
…		…
1617	FREETMPS;	1574	FREETMPS;
1618	LEAVE;	1575	LEAVE;
1619	continue;	1576	continue;
1620	}	1577	}
1621		1578
1622	ta->next = SvSTATE (next_sv);	1579	ta->next = SvSTATE_hv (next_sv);
1623		1580
1624	/* cannot transfer to destroyed coros, skip and look for next */	1581	/* cannot transfer to destroyed coros, skip and look for next */
1625	if (expect_false (ta->next->flags & CF_DESTROYED))	1582	if (expect_false (ta->next->flags & CF_DESTROYED))
1626	{	1583	{
1627	UNLOCK;
1628	SvREFCNT_dec (next_sv);	1584	SvREFCNT_dec (next_sv);
1629	/* coro_nready has already been taken care of by destroy */	1585	/* coro_nready has already been taken care of by destroy */
1630	continue;	1586	continue;
1631	}	1587	}
1632		1588
1633	--coro_nready;	1589	--coro_nready;
1634	UNLOCK;
1635	break;	1590	break;
1636	}	1591	}
1637		1592
1638	/* free this only after the transfer */	1593	/* free this only after the transfer */
1639	prev_sv = SvRV (coro_current);	1594	prev_sv = SvRV (coro_current);
1640	ta->prev = SvSTATE (prev_sv);	1595	ta->prev = SvSTATE_hv (prev_sv);
1641	TRANSFER_CHECK (*ta);	1596	TRANSFER_CHECK (*ta);
1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1597	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643	ta->next->flags &= ~CF_READY;	1598	ta->next->flags &= ~CF_READY;
1644	SvRV_set (coro_current, next_sv);	1599	SvRV_set (coro_current, next_sv);
1645		1600
1646	LOCK;
1647	free_coro_mortal (aTHX);	1601	free_coro_mortal (aTHX);
1648	coro_mortal = prev_sv;	1602	coro_mortal = prev_sv;
1649	UNLOCK;
1650	}	1603	}
1651		1604
1652	INLINE void	1605	INLINE void
1653	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1606	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654	{	1607	{
…		…
1718	if (flags & CC_TRACE)	1671	if (flags & CC_TRACE)
1719	{	1672	{
1720	if (!coro->cctx)	1673	if (!coro->cctx)
1721	coro->cctx = cctx_new_run ();	1674	coro->cctx = cctx_new_run ();
1722	else if (!(coro->cctx->flags & CC_TRACE))	1675	else if (!(coro->cctx->flags & CC_TRACE))
1723	croak ("cannot enable tracing on coroutine with custom stack");	1676	croak ("cannot enable tracing on coroutine with custom stack,");
1724		1677
1725	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1678	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726	}	1679	}
1727	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1680	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728	{	1681	{
…		…
1733	else	1686	else
1734	coro->slot->runops = RUNOPS_DEFAULT;	1687	coro->slot->runops = RUNOPS_DEFAULT;
1735	}	1688	}
1736	}	1689	}
1737		1690
1738	#if 0	1691	/*****************************************************************************/
		1692	/* schedule-like-function opcode (SLF) */
		1693
		1694	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1695	static const CV *slf_cv;
		1696	static SV **slf_argv;
		1697	static int slf_argc, slf_arga; /* count, allocated */
		1698	static 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 */
		1703	static OP *
		1704	pp_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
1739	static int	1721	static void
1740	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1722	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1741	{	1723	{
1742	AV *padlist;	1724	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1743	AV *av = (AV *)mg->mg_obj;
1744
1745	abort ();
1746
1747	return 0;
1748	}	1725	}
1749		1726
1750	static MGVTBL coro_gensub_vtbl = {	1727	static void
1751	0, 0, 0, 0,	1728	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752	coro_gensub_free	1729	{
1753	};	1730	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1754	#endif	1731
		1732	frame->prepare = slf_prepare_set_stacklevel;
		1733	frame->check = slf_check_nop;
		1734	frame->data = (void *)SvIV (arg [0]);
		1735	}
		1736
		1737	static void
		1738	slf_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
		1745	static void
		1746	slf_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
		1756	static void
		1757	slf_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
		1763	static void
		1764	slf_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
		1770	static void
		1771	slf_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	*/
		1786	static OP *
		1787	pp_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
		1875	static void
		1876	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1877	{
		1878	int i;
		1879	SV **arg = PL_stack_base + ax;
		1880	int items = PL_stack_sp - arg + 1;
		1881
		1882	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1883
		1884	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1885	&& PL_op->op_ppaddr != pp_slf)
		1886	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1887
		1888	CvFLAGS (cv) |= CVf_SLF;
		1889	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1890	slf_cv = cv;
		1891
		1892	/* we patch the op, and then re-run the whole call */
		1893	/* we have to put the same argument on the stack for this to work */
		1894	/* and this will be done by pp_restore */
		1895	slf_restore.op_next = (OP *)&slf_restore;
		1896	slf_restore.op_type = OP_CUSTOM;
		1897	slf_restore.op_ppaddr = pp_restore;
		1898	slf_restore.op_first = PL_op;
		1899
		1900	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1901
		1902	if (PL_op->op_flags & OPf_STACKED)
		1903	{
		1904	if (items > slf_arga)
		1905	{
		1906	slf_arga = items;
		1907	free (slf_argv);
		1908	slf_argv = malloc (slf_arga * sizeof (SV *));
		1909	}
		1910
		1911	slf_argc = items;
		1912
		1913	for (i = 0; i < items; ++i)
		1914	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1915	}
		1916	else
		1917	slf_argc = 0;
		1918
		1919	PL_op->op_ppaddr = pp_slf;
		1920	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1921
		1922	PL_op = (OP *)&slf_restore;
		1923	}
1755		1924
1756	/*****************************************************************************/	1925	/*****************************************************************************/
1757	/* PerlIO::cede */	1926	/* PerlIO::cede */
1758		1927
1759	typedef struct	1928	typedef struct
…		…
1827	PerlIOBuf_get_cnt,	1996	PerlIOBuf_get_cnt,
1828	PerlIOBuf_set_ptrcnt,	1997	PerlIOBuf_set_ptrcnt,
1829	};	1998	};
1830		1999
1831	/*****************************************************************************/	2000	/*****************************************************************************/
		2001	/* Coro::Semaphore */
1832		2002
1833	static const CV *slf_cv; /* for quick consistency check */	2003	static void
		2004	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2005	{
		2006	SV *count_sv = AvARRAY (av)[0];
		2007	IV count = SvIVX (count_sv);
1834		2008
1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */	2009	count += adjust;
1836	static SV *slf_arg0;	2010	SvIVX (count_sv) = count;
1837	static SV *slf_arg1;
1838		2011
1839	/* this restores the stack in the case we patched the entersub, to */	2012	/* now wake up as many waiters as are expected to lock */
1840	/* recreate the stack frame as perl will on following calls */	2013	while (count > 0 && AvFILLp (av) > 0)
1841	/* since entersub cleared the stack */	2014	{
		2015	SV *cb;
		2016
		2017	/* swap first two elements so we can shift a waiter */
		2018	AvARRAY (av)[0] = AvARRAY (av)[1];
		2019	AvARRAY (av)[1] = count_sv;
		2020	cb = av_shift (av);
		2021
		2022	if (SvOBJECT (cb))
		2023	api_ready (aTHX_ cb);
		2024	else
		2025	croak ("callbacks not yet supported");
		2026
		2027	SvREFCNT_dec (cb);
		2028
		2029	--count;
		2030	}
		2031	}
		2032
		2033	static void
		2034	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2035	{
		2036	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2037	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2038	}
		2039
		2040	static int
		2041	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2042	{
		2043	AV *av = (AV *)frame->data;
		2044	SV *count_sv = AvARRAY (av)[0];
		2045
		2046	if (SvIVX (count_sv) > 0)
		2047	{
		2048	SvSTATE_current->on_destroy = 0;
		2049	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2050	return 0;
		2051	}
		2052	else
		2053	{
		2054	int i;
		2055	/* if we were woken up but can't down, we look through the whole */
		2056	/* waiters list and only add us if we aren't in there already */
		2057	/* this avoids some degenerate memory usage cases */
		2058
		2059	for (i = 1; i <= AvFILLp (av); ++i)
		2060	if (AvARRAY (av)[i] == SvRV (coro_current))
		2061	return 1;
		2062
		2063	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2064	return 1;
		2065	}
		2066	}
		2067
		2068	static void
		2069	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2070	{
		2071	AV *av = (AV *)SvRV (arg [0]);
		2072
		2073	if (SvIVX (AvARRAY (av)[0]) > 0)
		2074	{
		2075	frame->data = (void *)av;
		2076	frame->prepare = prepare_nop;
		2077	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2078	}
		2079	else
		2080	{
		2081	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2082
		2083	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
		2084	frame->prepare = prepare_schedule;
		2085
		2086	/* to avoid race conditions when a woken-up coro gets terminated */
		2087	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2088	assert (!SvSTATE_current->on_destroy);//D
		2089	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2090	}
		2091
		2092	frame->check = slf_check_semaphore_down;
		2093
		2094	}
		2095
		2096	/*****************************************************************************/
		2097	/* gensub: simple closure generation utility */
		2098
		2099	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2100
		2101	/* create a closure from XS, returns a code reference */
		2102	/* the arg can be accessed via GENSUB_ARG from the callback */
		2103	/* the callback must use dXSARGS/XSRETURN */
1842	static OP *	2104	static SV *
1843	pp_restore (pTHX)	2105	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1844	{	2106	{
1845	dSP;	2107	CV *cv = (CV *)newSV (0);
1846		2108
1847	PUSHMARK (SP);	2109	sv_upgrade ((SV *)cv, SVt_PVCV);
1848		2110
1849	EXTEND (SP, 3);	2111	CvANON_on (cv);
1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	2112	CvISXSUB_on (cv);
1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	2113	CvXSUB (cv) = xsub;
1852	PUSHs ((SV *)CvGV (slf_cv));	2114	GENSUB_ARG = arg;
1853		2115
1854	RETURNOP (slf_restore.op_first);	2116	return newRV_noinc ((SV *)cv);
1855	}	2117	}
1856		2118
		2119	/*****************************************************************************/
		2120	/* Coro::AIO */
		2121
		2122	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2123
		2124	/* helper storage struct */
		2125	struct io_state
		2126	{
		2127	int errorno;
		2128	I32 laststype; /* U16 in 5.10.0 */
		2129	int laststatval;
		2130	Stat_t statcache;
		2131	};
		2132
		2133	static void
		2134	coro_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
1857	static void	2171	static int
1858	slf_init_set_stacklevel (pTHX_ SV **arg, int items)	2172	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
1859	{	2173	{
1860	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));	2174	AV *state = (AV *)frame->data;
1861	CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862	}
1863		2175
1864	static void	2176	/* one element that is an RV? repeat! */
1865	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	2177	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
1866	{	2178	return 1;
1867	prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA);
1868	}
1869		2179
1870	static void	2180	/* restore status */
1871	slf_init_transfer (pTHX_ SV **arg, int items)
1872	{
1873	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1875
1876	CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */
1877	}
1878
1879	static void
1880	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1881	{
1882	SV **arg = (SV **)CORO_SLF_DATA;
1883
1884	prepare_transfer (ta, arg [0], arg [1]);
1885	}
1886
1887	static void
1888	slf_init_nop (pTHX_ SV **arg, int items)
1889	{
1890	}
1891
1892	/* slf_prepare_schedule == prepare_schedule */
1893	/* slf_prepare_cede == prepare_cede */
1894	/* slf_prepare_notself == prepare_notself */
1895
1896	/* we hijack an hopefully unused CV flag for our purposes */
1897	#define CVf_SLF 0x4000
1898
1899	/*
1900	* these not obviously related functions are all rolled into one
1901	* function to increase chances that they all will call transfer with the same
1902	* stack offset
1903	* SLF stands for "schedule-like-function".
1904	*/
1905	static OP *
1906	pp_slf (pTHX)
1907	{
1908	I32 checkmark; /* mark SP to see how many elements check has pushed */
1909
1910	if (expect_true (!slf_frame.prepare))
1911	{	2181	{
1912	/* first iteration */	2182	SV *data_sv = av_pop (state);
1913	dSP;	2183	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1914	SV **arg = PL_stack_base + TOPMARK + 1;
1915	int items = SP - arg; /* args without function object */
1916	SV *gv = *sp;
1917	struct CoroSLF *slf;
1918		2184
1919	/* do a quick consistency check on the "function" object, and if it isn't */	2185	errno = data->errorno;
1920	/* for us, divert to the real entersub */	2186	PL_laststype = data->laststype;
1921	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))	2187	PL_laststatval = data->laststatval;
1922	return PL_ppaddr[OP_ENTERSUB](aTHX);	2188	PL_statcache = data->statcache;
1923		2189
1924	/* pop args */	2190	SvREFCNT_dec (data_sv);
1925	SP = PL_stack_base + POPMARK;
1926
1927	if (!(PL_op->op_flags & OPf_STACKED))
1928	{
1929	/* ampersand-form of call, use @_ instead of stack */
1930	AV *av = GvAV (PL_defgv);
1931	arg = AvARRAY (av);
1932	items = AvFILLp (av) + 1;
1933	}
1934
1935	PUTBACK;
1936
1937	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;
1938	slf_frame.prepare = slf->prepare;
1939	slf_frame.check = slf->check;
1940	slf->init (aTHX_ arg, items);
1941	}	2191	}
1942		2192
1943	/* now interpret the slf_frame */	2193	/* push result values */
1944	/* we use a callback system not to make the code needlessly */
1945	/* complicated, but so we can run multiple perl coros from one cctx */
1946
1947	do
1948	{
1949	struct coro_transfer_args ta;
1950
1951	slf_frame.prepare (aTHX_ &ta);
1952	TRANSFER (ta, 0);
1953
1954	checkmark = PL_stack_sp - PL_stack_base;
1955	}
1956	while (slf_frame.check (aTHX));
1957
1958	{	2194	{
1959	dSP;	2195	dSP;
1960	SV **bot = PL_stack_base + checkmark;	2196	int i;
1961	int gimme = GIMME_V;
1962		2197
1963	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	2198	EXTEND (SP, AvFILLp (state) + 1);
1964		2199	for (i = 0; i <= AvFILLp (state); ++i)
1965	/* make sure we put something on the stack in scalar context */	2200	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1966	if (gimme == G_SCALAR)
1967	{
1968	if (sp == bot)
1969	XPUSHs (&PL_sv_undef);
1970
1971	SP = bot + 1;
1972	}
1973		2201
1974	PUTBACK;	2202	PUTBACK;
1975	}	2203	}
1976		2204
1977	return NORMAL;	2205	return 0;
1978	}	2206	}
1979		2207
1980	static void	2208	static void
1981	api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items)	2209	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1982	{	2210	{
1983	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));	2211	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
1984	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	2212	SV *coro_hv = SvRV (coro_current);
		2213	struct coro *coro = SvSTATE_hv (coro_hv);
1985		2214
1986	if (items > 2)	2215	/* put our coroutine id on the state arg */
1987	croak ("Coro only supports a max of two arguments to SLF functions.");	2216	av_push (state, SvREFCNT_inc_NN (coro_hv));
1988		2217
1989	CvFLAGS (cv) |= CVf_SLF;	2218	/* first see whether we have a non-zero priority and set it as AIO prio */
1990	CvXSUBANY (cv).any_ptr = (void *)slf;	2219	if (coro->prio)
1991	slf_cv = cv;	2220	{
		2221	dSP;
1992		2222
1993	/* we patch the op, and then re-run the whole call */	2223	static SV *prio_cv;
1994	/* we have to put the same argument on the stack for this to work */	2224	static SV *prio_sv;
1995	/* and this will be done by pp_restore */
1996	slf_restore.op_next = (OP *)&slf_restore;
1997	slf_restore.op_type = OP_NULL;
1998	slf_restore.op_ppaddr = pp_restore;
1999	slf_restore.op_first = PL_op;
2000		2225
2001	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	2226	if (expect_false (!prio_cv))
2002	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	2227	{
		2228	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2229	prio_sv = newSViv (0);
		2230	}
2003		2231
2004	PL_op->op_ppaddr = pp_slf;	2232	PUSHMARK (SP);
		2233	sv_setiv (prio_sv, coro->prio);
		2234	XPUSHs (prio_sv);
2005		2235
2006	PL_op = (OP *)&slf_restore;	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;
2007	}	2266	}
		2267
		2268	static void
		2269	coro_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	/*****************************************************************************/
2008		2279
2009	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2280	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010		2281
2011	PROTOTYPES: DISABLE	2282	PROTOTYPES: DISABLE
2012		2283
2013	BOOT:	2284	BOOT:
2014	{	2285	{
2015	#ifdef USE_ITHREADS	2286	#ifdef USE_ITHREADS
2016	MUTEX_INIT (&coro_lock);
2017	# if CORO_PTHREAD	2287	# if CORO_PTHREAD
2018	coro_thx = PERL_GET_CONTEXT;	2288	coro_thx = PERL_GET_CONTEXT;
2019	# endif	2289	# endif
2020	#endif	2290	#endif
2021	BOOT_PAGESIZE;	2291	BOOT_PAGESIZE;
…		…
2042	main_top_env = PL_top_env;	2312	main_top_env = PL_top_env;
2043		2313
2044	while (main_top_env->je_prev)	2314	while (main_top_env->je_prev)
2045	main_top_env = main_top_env->je_prev;	2315	main_top_env = main_top_env->je_prev;
2046		2316
		2317	{
		2318	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2319
		2320	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2321	hv_store_ent (PL_custom_op_names, slf,
		2322	newSVpv ("coro_slf", 0), 0);
		2323
		2324	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2325	hv_store_ent (PL_custom_op_descs, slf,
		2326	newSVpv ("coro schedule like function", 0), 0);
		2327	}
		2328
2047	coroapi.ver = CORO_API_VERSION;	2329	coroapi.ver = CORO_API_VERSION;
2048	coroapi.rev = CORO_API_REVISION;	2330	coroapi.rev = CORO_API_REVISION;
		2331
2049	coroapi.transfer = api_transfer;	2332	coroapi.transfer = api_transfer;
		2333
		2334	coroapi.sv_state = SvSTATE_;
2050	coroapi.execute_slf = api_execute_slf;	2335	coroapi.execute_slf = api_execute_slf;
2051	coroapi.sv_state = SvSTATE_;	2336	coroapi.prepare_nop = prepare_nop;
		2337	coroapi.prepare_schedule = prepare_schedule;
		2338	coroapi.prepare_cede = prepare_cede;
		2339	coroapi.prepare_cede_notself = prepare_cede_notself;
2052		2340
2053	{	2341	{
2054	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2342	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055		2343
2056	if (!svp) croak ("Time::HiRes is required");	2344	if (!svp) croak ("Time::HiRes is required");
…		…
2092	RETVAL	2380	RETVAL
2093		2381
2094	void	2382	void
2095	_set_stacklevel (...)	2383	_set_stacklevel (...)
2096	CODE:	2384	CODE:
2097	{	2385	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2098	static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2100	}
2101		2386
2102	void	2387	void
2103	transfer (...)	2388	transfer (...)
		2389	PROTOTYPE: $$
2104	CODE:	2390	CODE:
2105	{	2391	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2106	static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2108	}
2109		2392
2110	bool	2393	bool
2111	_destroy (SV *coro_sv)	2394	_destroy (SV *coro_sv)
2112	CODE:	2395	CODE:
2113	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2396	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2120	CODE:	2403	CODE:
2121	_exit (code);	2404	_exit (code);
2122		2405
2123	int	2406	int
2124	cctx_stacksize (int new_stacksize = 0)	2407	cctx_stacksize (int new_stacksize = 0)
		2408	PROTOTYPE: ;$
2125	CODE:	2409	CODE:
2126	RETVAL = cctx_stacksize;	2410	RETVAL = cctx_stacksize;
2127	if (new_stacksize)	2411	if (new_stacksize)
2128	{	2412	{
2129	cctx_stacksize = new_stacksize;	2413	cctx_stacksize = new_stacksize;
…		…
2132	OUTPUT:	2416	OUTPUT:
2133	RETVAL	2417	RETVAL
2134		2418
2135	int	2419	int
2136	cctx_max_idle (int max_idle = 0)	2420	cctx_max_idle (int max_idle = 0)
		2421	PROTOTYPE: ;$
2137	CODE:	2422	CODE:
2138	RETVAL = cctx_max_idle;	2423	RETVAL = cctx_max_idle;
2139	if (max_idle > 1)	2424	if (max_idle > 1)
2140	cctx_max_idle = max_idle;	2425	cctx_max_idle = max_idle;
2141	OUTPUT:	2426	OUTPUT:
2142	RETVAL	2427	RETVAL
2143		2428
2144	int	2429	int
2145	cctx_count ()	2430	cctx_count ()
		2431	PROTOTYPE:
2146	CODE:	2432	CODE:
2147	RETVAL = cctx_count;	2433	RETVAL = cctx_count;
2148	OUTPUT:	2434	OUTPUT:
2149	RETVAL	2435	RETVAL
2150		2436
2151	int	2437	int
2152	cctx_idle ()	2438	cctx_idle ()
		2439	PROTOTYPE:
2153	CODE:	2440	CODE:
2154	RETVAL = cctx_idle;	2441	RETVAL = cctx_idle;
2155	OUTPUT:	2442	OUTPUT:
2156	RETVAL	2443	RETVAL
2157		2444
2158	void	2445	void
2159	list ()	2446	list ()
		2447	PROTOTYPE:
2160	PPCODE:	2448	PPCODE:
2161	{	2449	{
2162	struct coro *coro;	2450	struct coro *coro;
2163	for (coro = coro_first; coro; coro = coro->next)	2451	for (coro = coro_first; coro; coro = coro->next)
2164	if (coro->hv)	2452	if (coro->hv)
…		…
2226		2514
2227	void	2515	void
2228	throw (Coro::State self, SV *throw = &PL_sv_undef)	2516	throw (Coro::State self, SV *throw = &PL_sv_undef)
2229	PROTOTYPE: $;$	2517	PROTOTYPE: $;$
2230	CODE:	2518	CODE:
		2519	{
		2520	struct coro *current = SvSTATE_current;
		2521	SV **throwp = self == current ? &coro_throw : &self->throw;
2231	SvREFCNT_dec (self->throw);	2522	SvREFCNT_dec (*throwp);
2232	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2523	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2524	}
2233		2525
2234	void	2526	void
2235	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2527	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2528	PROTOTYPE: $;$
2236	C_ARGS: aTHX_ coro, flags	2529	C_ARGS: aTHX_ coro, flags
2237		2530
2238	SV *	2531	SV *
2239	has_cctx (Coro::State coro)	2532	has_cctx (Coro::State coro)
2240	PROTOTYPE: $	2533	PROTOTYPE: $
…		…
2265	OUTPUT:	2558	OUTPUT:
2266	RETVAL	2559	RETVAL
2267		2560
2268	void	2561	void
2269	force_cctx ()	2562	force_cctx ()
		2563	PROTOTYPE:
2270	CODE:	2564	CODE:
2271	struct coro *coro = SvSTATE (coro_current);
2272	coro->cctx->idle_sp = 0;	2565	SvSTATE_current->cctx->idle_sp = 0;
2273		2566
2274	void	2567	void
2275	swap_defsv (Coro::State self)	2568	swap_defsv (Coro::State self)
2276	PROTOTYPE: $	2569	PROTOTYPE: $
2277	ALIAS:	2570	ALIAS:
2278	swap_defav = 1	2571	swap_defav = 1
2279	CODE:	2572	CODE:
2280	if (!self->slot)	2573	if (!self->slot)
2281	croak ("cannot swap state with coroutine that has no saved state");	2574	croak ("cannot swap state with coroutine that has no saved state,");
2282	else	2575	else
2283	{	2576	{
2284	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);	2577	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2578	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2286		2579
2287	SV *tmp = *src; *src = *dst; *dst = tmp;	2580	SV *tmp = *src; *src = *dst; *dst = tmp;
2288	}	2581	}
		2582
2289		2583
2290	MODULE = Coro::State PACKAGE = Coro	2584	MODULE = Coro::State PACKAGE = Coro
2291		2585
2292	BOOT:	2586	BOOT:
2293	{	2587	{
…		…
2330	}	2624	}
2331		2625
2332	void	2626	void
2333	schedule (...)	2627	schedule (...)
2334	CODE:	2628	CODE:
2335	{	2629	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2336	static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop };
2337	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2338	}
2339		2630
2340	void	2631	void
2341	cede (...)	2632	cede (...)
2342	CODE:	2633	CODE:
2343	{	2634	CORO_EXECUTE_SLF_XS (slf_init_cede);
2344	static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2346	}
2347		2635
2348	void	2636	void
2349	cede_notself (...)	2637	cede_notself (...)
2350	CODE:	2638	CODE:
2351	{	2639	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2352	static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);
2354	}
2355		2640
2356	void	2641	void
2357	_set_current (SV *current)	2642	_set_current (SV *current)
2358	PROTOTYPE: $	2643	PROTOTYPE: $
2359	CODE:	2644	CODE:
…		…
2362		2647
2363	void	2648	void
2364	_set_readyhook (SV *hook)	2649	_set_readyhook (SV *hook)
2365	PROTOTYPE: $	2650	PROTOTYPE: $
2366	CODE:	2651	CODE:
2367	LOCK;
2368	SvREFCNT_dec (coro_readyhook);	2652	SvREFCNT_dec (coro_readyhook);
2369	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2653	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370	UNLOCK;
2371		2654
2372	int	2655	int
2373	prio (Coro::State coro, int newprio = 0)	2656	prio (Coro::State coro, int newprio = 0)
		2657	PROTOTYPE: $;$
2374	ALIAS:	2658	ALIAS:
2375	nice = 1	2659	nice = 1
2376	CODE:	2660	CODE:
2377	{	2661	{
2378	RETVAL = coro->prio;	2662	RETVAL = coro->prio;
…		…
2410	# for async_pool speedup	2694	# for async_pool speedup
2411	void	2695	void
2412	_pool_1 (SV *cb)	2696	_pool_1 (SV *cb)
2413	CODE:	2697	CODE:
2414	{	2698	{
2415	struct coro *coro = SvSTATE (coro_current);
2416	HV *hv = (HV *)SvRV (coro_current);	2699	HV *hv = (HV *)SvRV (coro_current);
		2700	struct coro *coro = SvSTATE_hv ((SV *)hv);
2417	AV *defav = GvAV (PL_defgv);	2701	AV *defav = GvAV (PL_defgv);
2418	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2702	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419	AV *invoke_av;	2703	AV *invoke_av;
2420	int i, len;	2704	int i, len;
2421		2705
…		…
2442	{	2726	{
2443	av_fill (defav, len - 1);	2727	av_fill (defav, len - 1);
2444	for (i = 0; i < len; ++i)	2728	for (i = 0; i < len; ++i)
2445	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2729	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446	}	2730	}
2447
2448	SvREFCNT_dec (invoke);
2449	}	2731	}
2450		2732
2451	void	2733	void
2452	_pool_2 (SV *cb)	2734	_pool_2 (SV *cb)
2453	CODE:	2735	CODE:
2454	{	2736	{
2455	struct coro *coro = SvSTATE (coro_current);	2737	HV *hv = (HV *)SvRV (coro_current);
		2738	struct coro *coro = SvSTATE_hv ((SV *)hv);
2456		2739
2457	sv_setsv (cb, &PL_sv_undef);	2740	sv_setsv (cb, &PL_sv_undef);
2458		2741
2459	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2742	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460	coro->saved_deffh = 0;	2743	coro->saved_deffh = 0;
…		…
2467	SvREFCNT_dec (old);	2750	SvREFCNT_dec (old);
2468	croak ("\3async_pool terminate\2\n");	2751	croak ("\3async_pool terminate\2\n");
2469	}	2752	}
2470		2753
2471	av_clear (GvAV (PL_defgv));	2754	av_clear (GvAV (PL_defgv));
2472	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2755	hv_store (hv, "desc", sizeof ("desc") - 1,
2473	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2756	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474		2757
2475	coro->prio = 0;	2758	coro->prio = 0;
2476		2759
2477	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2760	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478	api_trace (aTHX_ coro_current, 0);	2761	api_trace (aTHX_ coro_current, 0);
2479		2762
2480	av_push (av_async_pool, newSVsv (coro_current));	2763	av_push (av_async_pool, newSVsv (coro_current));
2481	}	2764	}
2482		2765
2483	#if 0
2484		2766
2485	void	2767	MODULE = Coro::State PACKAGE = PerlIO::cede
2486	_generator_call (...)	2768
2487	PROTOTYPE: @	2769	BOOT:
2488	PPCODE:	2770	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2489	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);	2771
2490	xxxx	2772
2491	abort ();	2773	MODULE = Coro::State PACKAGE = Coro::Semaphore
2492		2774
2493	SV *	2775	SV *
2494	gensub (SV *sub, ...)	2776	new (SV *klass, SV *count_ = 0)
2495	PROTOTYPE: &;@	2777	CODE:
2496	CODE:
2497	{	2778	{
2498	struct coro *coro;	2779	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2499	MAGIC *mg;	2780	AV *av = newAV ();
2500	CV *xcv;	2781	SV **ary;
2501	CV *ncv = (CV *)newSV_type (SVt_PVCV);
2502	int i;
2503		2782
2504	CvGV (ncv) = CvGV (cv);	2783	/* unfortunately, building manually saves memory */
2505	CvFILE (ncv) = CvFILE (cv);	2784	Newx (ary, 2, SV *);
		2785	AvALLOC (av) = ary;
		2786	AvARRAY (av) = ary;
		2787	AvMAX (av) = 1;
		2788	AvFILLp (av) = 0;
		2789	ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2506		2790
2507	Newz (0, coro, 1, struct coro);	2791	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2508	coro->args = newAV ();
2509	coro->flags = CF_NEW;
2510
2511	av_extend (coro->args, items - 1);
2512	for (i = 1; i < items; i++)
2513	av_push (coro->args, newSVsv (ST (i)));
2514
2515	CvISXSUB_on (ncv);
2516	CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520	CvXSUB (ncv) = CvXSUB (xcv);
2521	CvANON_on (ncv);
2522
2523	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2524	RETVAL = newRV_noinc ((SV *)ncv);
2525	}	2792	}
2526	OUTPUT:	2793	OUTPUT:
2527	RETVAL	2794	RETVAL
2528		2795
2529	#endif	2796	SV *
2530		2797	count (SV *self)
2531		2798	CODE:
2532	MODULE = Coro::State PACKAGE = Coro::AIO	2799	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2800	OUTPUT:
		2801	RETVAL
2533		2802
2534	void	2803	void
2535	_get_state (SV *self)	2804	up (SV *self, int adjust = 1)
2536	PPCODE:	2805	ALIAS:
2537	{	2806	adjust = 1
2538	AV *defav = GvAV (PL_defgv);	2807	CODE:
2539	AV *av = newAV ();	2808	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2540	int i;
2541	SV *data_sv = newSV (sizeof (struct io_state));
2542	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2543	SvCUR_set (data_sv, sizeof (struct io_state));
2544	SvPOK_only (data_sv);
2545
2546	data->errorno = errno;
2547	data->laststype = PL_laststype;
2548	data->laststatval = PL_laststatval;
2549	data->statcache = PL_statcache;
2550
2551	av_extend (av, AvFILLp (defav) + 1 + 1);
2552
2553	for (i = 0; i <= AvFILLp (defav); ++i)
2554	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2555
2556	av_push (av, data_sv);
2557
2558	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2559
2560	api_ready (aTHX_ self);
2561	}
2562		2809
2563	void	2810	void
2564	_set_state (SV *state)	2811	down (SV *self)
2565	PROTOTYPE: $	2812	CODE:
2566	PPCODE:	2813	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		2814
		2815	void
		2816	try (SV *self)
		2817	PPCODE:
2567	{	2818	{
2568	AV *av = (AV *)SvRV (state);	2819	AV *av = (AV *)SvRV (self);
2569	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);	2820	SV *count_sv = AvARRAY (av)[0];
		2821	IV count = SvIVX (count_sv);
		2822
		2823	if (count > 0)
		2824	{
		2825	--count;
		2826	SvIVX (count_sv) = count;
		2827	XSRETURN_YES;
		2828	}
		2829	else
		2830	XSRETURN_NO;
		2831	}
		2832
		2833	void
		2834	waiters (SV *self)
		2835	CODE:
		2836	{
		2837	AV *av = (AV *)SvRV (self);
		2838
		2839	if (GIMME_V == G_SCALAR)
		2840	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2841	else
		2842	{
2570	int i;	2843	int i;
2571
2572	errno = data->errorno;
2573	PL_laststype = data->laststype;
2574	PL_laststatval = data->laststatval;
2575	PL_statcache = data->statcache;
2576
2577	EXTEND (SP, AvFILLp (av));	2844	EXTEND (SP, AvFILLp (av) + 1 - 1);
2578	for (i = 0; i < AvFILLp (av); ++i)	2845	for (i = 1; i <= AvFILLp (av); ++i)
2579	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	2846	PUSHs (newSVsv (AvARRAY (av)[i]));
		2847	}
2580	}	2848	}
2581		2849
2582		2850
2583	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2851	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584		2852
2585	BOOT:	2853	BOOT:
2586	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2854	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587		2855
2588	SV *	2856	void
2589	_schedule (...)	2857	_schedule (...)
2590	PROTOTYPE: @
2591	CODE:	2858	CODE:
2592	{	2859	{
2593	static int incede;	2860	static int incede;
2594		2861
2595	api_cede_notself (aTHX);	2862	api_cede_notself (aTHX);
…		…
2609		2876
2610	--incede;	2877	--incede;
2611	}	2878	}
2612		2879
2613		2880
2614	MODULE = Coro::State PACKAGE = PerlIO::cede	2881	MODULE = Coro::State PACKAGE = Coro::AIO
2615		2882
2616	BOOT:	2883	void
2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2884	_register (char *target, char *proto, SV *req)
		2885	CODE:
		2886	{
		2887	HV *st;
		2888	GV *gvp;
		2889	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		2890	/* newXSproto doesn't return the CV on 5.8 */
		2891	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		2892	sv_setpv ((SV *)slf_cv, proto);
		2893	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		2894	}
2618		2895

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