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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.273 by root, Fri Nov 14 23:48:10 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;
…		…
257	/* this is a structure representing a perl-level coroutine */	234	/* this is a structure representing a perl-level coroutine */
258	struct coro {	235	struct coro {
259	/* the C coroutine allocated to this perl coroutine, if any */	236	/* the C coroutine allocated to this perl coroutine, if any */
260	coro_cctx *cctx;	237	coro_cctx *cctx;
261		238
262	/* process data */	239	/* state data */
263	struct CoroSLF slf_frame; /* saved slf frame */	240	struct CoroSLF slf_frame; /* saved slf frame */
264	AV *mainstack;	241	AV *mainstack;
265	perl_slots *slot; /* basically the saved sp */	242	perl_slots *slot; /* basically the saved sp */
266		243
267	AV *args; /* data associated with this coroutine (initial args) */	244	AV *args; /* data associated with this coroutine (initial args) */
268	int refcnt; /* coroutines are refcounted, yes */	245	int refcnt; /* coroutines are refcounted, yes */
269	int flags; /* CF_ flags */	246	int flags; /* CF_ flags */
270	HV *hv; /* the perl hash associated with this coro, if any */	247	HV *hv; /* the perl hash associated with this coro, if any */
		248	void (*on_destroy)(pTHX_ struct coro *coro);
271		249
272	/* statistics */	250	/* statistics */
273	int usecount; /* number of transfers to this coro */	251	int usecount; /* number of transfers to this coro */
274		252
275	/* coro process data */	253	/* coro process data */
…		…
284	};	262	};
285		263
286	typedef struct coro *Coro__State;	264	typedef struct coro *Coro__State;
287	typedef struct coro *Coro__State_or_hashref;	265	typedef struct coro *Coro__State_or_hashref;
288		266
		267	/* the following variables are effectively part of the perl context */
		268	/* and get copied between struct coro and these variables */
		269	/* the mainr easonw e don't support windows process emulation */
289	static struct CoroSLF slf_frame; /* the current slf frame */	270	static struct CoroSLF slf_frame; /* the current slf frame */
		271	static SV *coro_throw;
290		272
291	/** Coro ********************************************************************/	273	/** Coro ********************************************************************/
292		274
293	#define PRIO_MAX 3	275	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	276	#define PRIO_HIGH 1
…		…
395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	377	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396		378
397	return 0;	379	return 0;
398	}	380	}
399		381
400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	382	#define CORO_MAGIC_type_cv 26
401	#define CORO_MAGIC_type_state PERL_MAGIC_ext	383	#define CORO_MAGIC_type_state PERL_MAGIC_ext
402		384
403	static MGVTBL coro_cv_vtbl = {	385	static MGVTBL coro_cv_vtbl = {
404	0, 0, 0, 0,	386	0, 0, 0, 0,
405	coro_cv_free	387	coro_cv_free
406	};	388	};
407		389
		390	#define CORO_MAGIC_NN(sv, type) \
		391	(expect_true (SvMAGIC (sv)->mg_type == type) \
		392	? SvMAGIC (sv) \
		393	: mg_find (sv, type))
		394
408	#define CORO_MAGIC(sv, type) \	395	#define CORO_MAGIC(sv, type) \
409	SvMAGIC (sv) \	396	(expect_true (SvMAGIC (sv)) \
410	? SvMAGIC (sv)->mg_type == type \	397	? CORO_MAGIC_NN (sv, type) \
411	? SvMAGIC (sv) \
412	: mg_find (sv, type) \
413	: 0	398	: 0)
414		399
415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	401	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417		402
418	INLINE struct coro *	403	INLINE struct coro *
419	SvSTATE_ (pTHX_ SV *coro)	404	SvSTATE_ (pTHX_ SV *coro)
420	{	405	{
421	HV *stash;	406	HV *stash;
…		…
438	mg = CORO_MAGIC_state (coro);	423	mg = CORO_MAGIC_state (coro);
439	return (struct coro *)mg->mg_ptr;	424	return (struct coro *)mg->mg_ptr;
440	}	425	}
441		426
442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		428
		429	/* faster than SvSTATE, but expects a coroutine hv */
		430	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		431	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443		432
444	/* the next two functions merely cache the padlists */	433	/* the next two functions merely cache the padlists */
445	static void	434	static void
446	get_padlist (pTHX_ CV *cv)	435	get_padlist (pTHX_ CV *cv)
447	{	436	{
…		…
515	}	504	}
516		505
517	PUTBACK;	506	PUTBACK;
518	}	507	}
519		508
520	slf_frame = c->slf_frame;	509	slf_frame = c->slf_frame;
		510	coro_throw = c->throw;
521	}	511	}
522		512
523	static void	513	static void
524	save_perl (pTHX_ Coro__State c)	514	save_perl (pTHX_ Coro__State c)
525	{	515	{
		516	c->throw = coro_throw;
526	c->slf_frame = slf_frame;	517	c->slf_frame = slf_frame;
527		518
528	{	519	{
529	dSP;	520	dSP;
530	I32 cxix = cxstack_ix;	521	I32 cxix = cxstack_ix;
…		…
811		802
812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813	}	804	}
814		805
815	static void	806	static void
816	prepare_nop (aTHX_ struct coro_transfer_args *ta)	807	prepare_nop (pTHX_ struct coro_transfer_args *ta)
817	{	808	{
818	/* kind of mega-hacky, but works */	809	/* kind of mega-hacky, but works */
819	ta->next = ta->prev = (struct coro *)ta;	810	ta->next = ta->prev = (struct coro *)ta;
820	}	811	}
821		812
822	static int	813	static int
823	slf_check_nop (aTHX)	814	slf_check_nop (pTHX_ struct CoroSLF *frame)
824	{	815	{
825	return 0;	816	return 0;
826	}	817	}
827		818
828	static void	819	static void NOINLINE /* noinline to keep it out of the transfer fast path */
829	coro_setup (pTHX_ struct coro *coro)	820	coro_setup (pTHX_ struct coro *coro)
830	{	821	{
831	/*	822	/*
832	* emulate part of the perl startup here.	823	* emulate part of the perl startup here.
833	*/	824	*/
…		…
876	/* this newly created coroutine might be run on an existing cctx which most	867	/* this newly created coroutine might be run on an existing cctx which most
877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	868	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878	*/	869	*/
879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	870	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	871	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		872
		873	coro_throw = coro->throw;
881	}	874	}
882		875
883	static void	876	static void
884	coro_destruct (pTHX_ struct coro *coro)	877	coro_destruct (pTHX_ struct coro *coro)
885	{	878	{
…		…
909		902
910	SvREFCNT_dec (PL_diehook);	903	SvREFCNT_dec (PL_diehook);
911	SvREFCNT_dec (PL_warnhook);	904	SvREFCNT_dec (PL_warnhook);
912		905
913	SvREFCNT_dec (coro->saved_deffh);	906	SvREFCNT_dec (coro->saved_deffh);
914	SvREFCNT_dec (coro->throw);	907	SvREFCNT_dec (coro_throw);
915		908
916	coro_destruct_stacks (aTHX);	909	coro_destruct_stacks (aTHX);
917	}	910	}
918		911
919	INLINE void	912	INLINE void
…		…
929	static int	922	static int
930	runops_trace (pTHX)	923	runops_trace (pTHX)
931	{	924	{
932	COP *oldcop = 0;	925	COP *oldcop = 0;
933	int oldcxix = -2;	926	int oldcxix = -2;
934	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */	927	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935	coro_cctx *cctx = coro->cctx;	928	coro_cctx *cctx = coro->cctx;
936		929
937	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	930	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938	{	931	{
939	PERL_ASYNC_CHECK ();	932	PERL_ASYNC_CHECK ();
…		…
1088		1081
1089	/* the tail of transfer: execute stuff we can only do after a transfer */	1082	/* the tail of transfer: execute stuff we can only do after a transfer */
1090	INLINE void	1083	INLINE void
1091	transfer_tail (pTHX)	1084	transfer_tail (pTHX)
1092	{	1085	{
1093	struct coro *next = (struct coro *)transfer_next;
1094	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097	free_coro_mortal (aTHX);	1086	free_coro_mortal (aTHX);
1098	UNLOCK;
1099
1100	if (expect_false (next->throw))
1101	{
1102	SV *exception = sv_2mortal (next->throw);
1103
1104	next->throw = 0;
1105	sv_setsv (ERRSV, exception);
1106	croak (0);
1107	}
1108	}	1087	}
1109		1088
1110	/*	1089	/*
1111	* this is a _very_ stripped down perl interpreter ;)	1090	* this is a _very_ stripped down perl interpreter ;)
1112	*/	1091	*/
…		…
1127		1106
1128	/* inject a fake subroutine call to cctx_init */	1107	/* inject a fake subroutine call to cctx_init */
1129	cctx_prepare (aTHX_ (coro_cctx *)arg);	1108	cctx_prepare (aTHX_ (coro_cctx *)arg);
1130		1109
1131	/* cctx_run is the alternative tail of transfer() */	1110	/* cctx_run is the alternative tail of transfer() */
1132	/* TODO: throwing an exception here might be deadly, VERIFY */
1133	transfer_tail (aTHX);	1111	transfer_tail (aTHX);
1134		1112
1135	/* somebody or something will hit me for both perl_run and PL_restartop */	1113	/* somebody or something will hit me for both perl_run and PL_restartop */
1136	PL_restartop = PL_op;	1114	PL_restartop = PL_op;
1137	perl_run (PL_curinterp);	1115	perl_run (PL_curinterp);
…		…
1293	/** coroutine switching *****************************************************/	1271	/** coroutine switching *****************************************************/
1294		1272
1295	static void	1273	static void
1296	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1274	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297	{	1275	{
		1276	/* TODO: throwing up here is considered harmful */
		1277
1298	if (expect_true (prev != next))	1278	if (expect_true (prev != next))
1299	{	1279	{
1300	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1280	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1281	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302		1282
…		…
1312	#endif	1292	#endif
1313	}	1293	}
1314	}	1294	}
1315		1295
1316	/* always use the TRANSFER macro */	1296	/* always use the TRANSFER macro */
1317	static void NOINLINE	1297	static void NOINLINE /* noinline so we have a fixed stackframe */
1318	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1298	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319	{	1299	{
1320	dSTACKLEVEL;	1300	dSTACKLEVEL;
1321		1301
1322	/* sometimes transfer is only called to set idle_sp */	1302	/* sometimes transfer is only called to set idle_sp */
1323	if (expect_false (!next))	1303	if (expect_false (!next))
1324	{	1304	{
1325	((coro_cctx *)prev)->idle_sp = stacklevel;	1305	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1326	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1306	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327	}	1307	}
1328	else if (expect_true (prev != next))	1308	else if (expect_true (prev != next))
1329	{	1309	{
1330	coro_cctx *prev__cctx;	1310	coro_cctx *prev__cctx;
…		…
1337	prev->flags |= CF_RUNNING;	1317	prev->flags |= CF_RUNNING;
1338	}	1318	}
1339		1319
1340	prev->flags &= ~CF_RUNNING;	1320	prev->flags &= ~CF_RUNNING;
1341	next->flags |= CF_RUNNING;	1321	next->flags |= CF_RUNNING;
1342
1343	LOCK;
1344		1322
1345	/* first get rid of the old state */	1323	/* first get rid of the old state */
1346	save_perl (aTHX_ prev);	1324	save_perl (aTHX_ prev);
1347		1325
1348	if (expect_false (next->flags & CF_NEW))	1326	if (expect_false (next->flags & CF_NEW))
…		…
1357		1335
1358	prev__cctx = prev->cctx;	1336	prev__cctx = prev->cctx;
1359		1337
1360	/* possibly untie and reuse the cctx */	1338	/* possibly untie and reuse the cctx */
1361	if (expect_true (	1339	if (expect_true (
1362	prev__cctx->idle_sp == stacklevel	1340	prev__cctx->idle_sp == (void *)stacklevel
1363	&& !(prev__cctx->flags & CC_TRACE)	1341	&& !(prev__cctx->flags & CC_TRACE)
1364	&& !force_cctx	1342	&& !force_cctx
1365	))	1343	))
1366	{	1344	{
1367	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1345	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1381	++next->usecount;	1359	++next->usecount;
1382		1360
1383	if (expect_true (!next->cctx))	1361	if (expect_true (!next->cctx))
1384	next->cctx = cctx_get (aTHX);	1362	next->cctx = cctx_get (aTHX);
1385		1363
1386	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387	transfer_next = next;
1388
1389	if (expect_false (prev__cctx != next->cctx))	1364	if (expect_false (prev__cctx != next->cctx))
1390	{	1365	{
1391	prev__cctx->top_env = PL_top_env;	1366	prev__cctx->top_env = PL_top_env;
1392	PL_top_env = next->cctx->top_env;	1367	PL_top_env = next->cctx->top_env;
1393	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1368	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1406	coro_state_destroy (pTHX_ struct coro *coro)	1381	coro_state_destroy (pTHX_ struct coro *coro)
1407	{	1382	{
1408	if (coro->flags & CF_DESTROYED)	1383	if (coro->flags & CF_DESTROYED)
1409	return 0;	1384	return 0;
1410		1385
		1386	if (coro->on_destroy)
		1387	coro->on_destroy (aTHX_ coro);
		1388
1411	coro->flags |= CF_DESTROYED;	1389	coro->flags |= CF_DESTROYED;
1412		1390
1413	if (coro->flags & CF_READY)	1391	if (coro->flags & CF_READY)
1414	{	1392	{
1415	/* reduce nready, as destroying a ready coro effectively unreadies it */	1393	/* reduce nready, as destroying a ready coro effectively unreadies it */
1416	/* alternative: look through all ready queues and remove the coro */	1394	/* alternative: look through all ready queues and remove the coro */
1417	LOCK;
1418	--coro_nready;	1395	--coro_nready;
1419	UNLOCK;
1420	}	1396	}
1421	else	1397	else
1422	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1398	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423		1399
1424	if (coro->mainstack && coro->mainstack != main_mainstack)	1400	if (coro->mainstack && coro->mainstack != main_mainstack)
…		…
1502	TRANSFER (ta, 1);	1478	TRANSFER (ta, 1);
1503	}	1479	}
1504		1480
1505	/** Coro ********************************************************************/	1481	/** Coro ********************************************************************/
1506		1482
1507	static void	1483	INLINE void
1508	coro_enq (pTHX_ SV *coro_sv)	1484	coro_enq (pTHX_ struct coro *coro)
1509	{	1485	{
1510	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1486	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511	}	1487	}
1512		1488
1513	static SV *	1489	INLINE SV *
1514	coro_deq (pTHX)	1490	coro_deq (pTHX)
1515	{	1491	{
1516	int prio;	1492	int prio;
1517		1493
1518	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1494	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1537	if (coro->flags & CF_READY)	1513	if (coro->flags & CF_READY)
1538	return 0;	1514	return 0;
1539		1515
1540	coro->flags |= CF_READY;	1516	coro->flags |= CF_READY;
1541		1517
1542	LOCK;
1543
1544	sv_hook = coro_nready ? 0 : coro_readyhook;	1518	sv_hook = coro_nready ? 0 : coro_readyhook;
1545	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1519	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546		1520
1547	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1521	coro_enq (aTHX_ coro);
1548	++coro_nready;	1522	++coro_nready;
1549		1523
1550	UNLOCK;
1551
1552	if (sv_hook)	1524	if (sv_hook)
1553	{	1525	{
1554	dSP;	1526	dSP;
1555		1527
1556	ENTER;	1528	ENTER;
…		…
1582	{	1554	{
1583	SV *prev_sv, *next_sv;	1555	SV *prev_sv, *next_sv;
1584		1556
1585	for (;;)	1557	for (;;)
1586	{	1558	{
1587	LOCK;
1588	next_sv = coro_deq (aTHX);	1559	next_sv = coro_deq (aTHX);
1589		1560
1590	/* nothing to schedule: call the idle handler */	1561	/* nothing to schedule: call the idle handler */
1591	if (expect_false (!next_sv))	1562	if (expect_false (!next_sv))
1592	{	1563	{
1593	dSP;	1564	dSP;
1594	UNLOCK;
1595		1565
1596	ENTER;	1566	ENTER;
1597	SAVETMPS;	1567	SAVETMPS;
1598		1568
1599	PUSHMARK (SP);	1569	PUSHMARK (SP);
…		…
1604	FREETMPS;	1574	FREETMPS;
1605	LEAVE;	1575	LEAVE;
1606	continue;	1576	continue;
1607	}	1577	}
1608		1578
1609	ta->next = SvSTATE (next_sv);	1579	ta->next = SvSTATE_hv (next_sv);
1610		1580
1611	/* cannot transfer to destroyed coros, skip and look for next */	1581	/* cannot transfer to destroyed coros, skip and look for next */
1612	if (expect_false (ta->next->flags & CF_DESTROYED))	1582	if (expect_false (ta->next->flags & CF_DESTROYED))
1613	{	1583	{
1614	UNLOCK;
1615	SvREFCNT_dec (next_sv);	1584	SvREFCNT_dec (next_sv);
1616	/* coro_nready has already been taken care of by destroy */	1585	/* coro_nready has already been taken care of by destroy */
1617	continue;	1586	continue;
1618	}	1587	}
1619		1588
1620	--coro_nready;	1589	--coro_nready;
1621	UNLOCK;
1622	break;	1590	break;
1623	}	1591	}
1624		1592
1625	/* free this only after the transfer */	1593	/* free this only after the transfer */
1626	prev_sv = SvRV (coro_current);	1594	prev_sv = SvRV (coro_current);
1627	ta->prev = SvSTATE (prev_sv);	1595	ta->prev = SvSTATE_hv (prev_sv);
1628	TRANSFER_CHECK (*ta);	1596	TRANSFER_CHECK (*ta);
1629	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1597	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630	ta->next->flags &= ~CF_READY;	1598	ta->next->flags &= ~CF_READY;
1631	SvRV_set (coro_current, next_sv);	1599	SvRV_set (coro_current, next_sv);
1632		1600
1633	LOCK;
1634	free_coro_mortal (aTHX);	1601	free_coro_mortal (aTHX);
1635	coro_mortal = prev_sv;	1602	coro_mortal = prev_sv;
1636	UNLOCK;
1637	}	1603	}
1638		1604
1639	INLINE void	1605	INLINE void
1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1606	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641	{	1607	{
…		…
1720	else	1686	else
1721	coro->slot->runops = RUNOPS_DEFAULT;	1687	coro->slot->runops = RUNOPS_DEFAULT;
1722	}	1688	}
1723	}	1689	}
1724		1690
1725	#if 0	1691	/*****************************************************************************/
		1692	/* schedule-like-function opcode (SLF) */
		1693
		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
1726	static int	1721	static void
1727	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1722	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1728	{	1723	{
1729	AV *padlist;	1724	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1730	AV *av = (AV *)mg->mg_obj;
1731
1732	abort ();
1733
1734	return 0;
1735	}	1725	}
1736		1726
1737	static MGVTBL coro_gensub_vtbl = {	1727	static void
1738	0, 0, 0, 0,	1728	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739	coro_gensub_free	1729	{
1740	};	1730	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1741	#endif	1731
		1732	frame->prepare = slf_prepare_set_stacklevel;
		1733	frame->check = slf_check_nop;
		1734	frame->data = (void *)SvIV (arg [0]);
		1735	}
		1736
		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	}
1742		1924
1743	/*****************************************************************************/	1925	/*****************************************************************************/
1744	/* PerlIO::cede */	1926	/* PerlIO::cede */
1745		1927
1746	typedef struct	1928	typedef struct
…		…
1814	PerlIOBuf_get_cnt,	1996	PerlIOBuf_get_cnt,
1815	PerlIOBuf_set_ptrcnt,	1997	PerlIOBuf_set_ptrcnt,
1816	};	1998	};
1817		1999
1818	/*****************************************************************************/	2000	/*****************************************************************************/
		2001	/* Coro::Semaphore */
1819		2002
1820	static const CV *slf_cv; /* for quick consistency check */	2003	static void
1821		2004	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1822	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823	static SV *slf_arg0;
1824	static SV *slf_arg1;
1825	static 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 */
1830	static OP *
1831	pp_restore (pTHX)
1832	{	2005	{
1833	dSP;	2006	SV *count_sv = AvARRAY (av)[0];
		2007	IV count = SvIVX (count_sv);
1834		2008
1835	PUSHMARK (SP);	2009	count += adjust;
		2010	SvIVX (count_sv) = count;
1836		2011
1837	EXTEND (SP, 3);	2012	/* now wake up as many waiters as are expected to lock */
1838	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	2013	while (count > 0 && AvFILLp (av) > 0)
1839	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	2014	{
1840	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));	2015	SV *cb;
1841	PUSHs ((SV *)CvGV (slf_cv));
1842		2016
1843	RETURNOP (slf_restore.op_first);	2017	/* swap first two elements so we can shift a waiter */
1844	}	2018	AvARRAY (av)[0] = AvARRAY (av)[1];
		2019	AvARRAY (av)[1] = count_sv;
		2020	cb = av_shift (av);
1845		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
1846	static void	2040	static int
1847	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	2041	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1848	{	2042	{
1849	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850	}
1851
1852	static void
1853	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854	{
1855	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1856
1857	frame->prepare = slf_prepare_set_stacklevel;
1858	frame->check = slf_check_nop;
1859	frame->data = (void *)SvIV (arg [0]);
1860	}
1861
1862	static void
1863	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1864	{
1865	SV **arg = (SV **)slf_frame.data;	2043	AV *av = (AV *)frame->data;
		2044	SV *count_sv = AvARRAY (av)[0];
1866		2045
1867	prepare_transfer (ta, arg [0], arg [1]);	2046	if (SvIVX (count_sv) > 0)
1868	}	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 */
1869		2058
1870	static void	2059	for (i = 1; i <= AvFILLp (av); ++i)
1871	slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2060	if (AvARRAY (av)[i] == SvRV (coro_current))
1872	{	2061	return 1;
1873	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875		2062
1876	frame->prepare = slf_prepare_transfer;	2063	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1877	frame->check = slf_check_nop;	2064	return 1;
1878	frame->data = (void *)arg; /* let's hope it will stay valid */	2065	}
1879	}	2066	}
1880		2067
1881	static void	2068	static void
1882	slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2069	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883	{	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));
1884	frame->prepare = prepare_schedule;	2084	frame->prepare = prepare_schedule;
		2085
		2086	/* to avoid race conditions when a woken-up coro gets terminated */
		2087	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2088	assert (!SvSTATE_current->on_destroy);//D
		2089	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2090	}
		2091
1885	frame->check = slf_check_nop;	2092	frame->check = slf_check_semaphore_down;
1886	}
1887		2093
1888	static void
1889	slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890	{
1891	frame->prepare = prepare_cede;
1892	frame->check = slf_check_nop;
1893	}	2094	}
1894		2095
1895	static void	2096	/*****************************************************************************/
1896	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2097	/* gensub: simple closure generation utility */
1897	{
1898	frame->prepare = prepare_cede_notself;
1899	frame->check = slf_check_nop;
1900	}
1901		2098
1902	/* we hijack an hopefully unused CV flag for our purposes */	2099	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1903	#define CVf_SLF 0x4000
1904		2100
1905	/*	2101	/* create a closure from XS, returns a code reference */
1906	* these not obviously related functions are all rolled into one	2102	/* the arg can be accessed via GENSUB_ARG from the callback */
1907	* function to increase chances that they all will call transfer with the same	2103	/* the callback must use dXSARGS/XSRETURN */
1908	* stack offset
1909	* SLF stands for "schedule-like-function".
1910	*/
1911	static OP *	2104	static SV *
1912	pp_slf (pTHX)	2105	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1913	{	2106	{
1914	I32 checkmark; /* mark SP to see how many elements check has pushed */	2107	CV *cv = (CV *)newSV (0);
1915		2108
1916	/* set up the slf frame, unless it has already been set-up */	2109	sv_upgrade ((SV *)cv, SVt_PVCV);
1917	/* the latter happens when a new coro has been started */	2110
1918	/* or when a new cctx was attached to an existing coroutine */	2111	CvANON_on (cv);
1919	if (expect_true (!slf_frame.prepare))	2112	CvISXSUB_on (cv);
		2113	CvXSUB (cv) = xsub;
		2114	GENSUB_ARG = arg;
		2115
		2116	return newRV_noinc ((SV *)cv);
		2117	}
		2118
		2119	/*****************************************************************************/
		2120	/* Coro::AIO */
		2121
		2122	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2123
		2124	/* helper storage struct */
		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
1920	{	2147	{
1921	/* first iteration */	2148	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1922	dSP;
1923	SV **arg = PL_stack_base + TOPMARK + 1;
1924	int items = SP - arg; /* args without function object */
1925	SV *gv = *sp;
1926		2149
1927	/* do a quick consistency check on the "function" object, and if it isn't */	2150	data->errorno = errno;
1928	/* for us, divert to the real entersub */	2151	data->laststype = PL_laststype;
1929	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))	2152	data->laststatval = PL_laststatval;
1930	return PL_ppaddr[OP_ENTERSUB](aTHX);	2153	data->statcache = PL_statcache;
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	}	2154	}
1947		2155
1948	/* now interpret the slf_frame */	2156	/* now build the result vector out of all the parameters and the data_sv */
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	{	2157	{
1954	struct coro_transfer_args ta;	2158	int i;
1955		2159
1956	slf_frame.prepare (aTHX_ &ta);	2160	for (i = 0; i < items; ++i)
1957	TRANSFER (ta, 0);	2161	av_push (state, SvREFCNT_inc_NN (ST (i)));
1958
1959	checkmark = PL_stack_sp - PL_stack_base;
1960	}	2162	}
1961	while (slf_frame.check (aTHX_ &slf_frame));
1962		2163
		2164	av_push (state, data_sv);
		2165
		2166	api_ready (aTHX_ coro);
		2167	SvREFCNT_dec (coro);
		2168	SvREFCNT_dec ((AV *)state);
		2169	}
		2170
		2171	static int
		2172	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2173	{
		2174	AV *state = (AV *)frame->data;
		2175
		2176	/* one element that is an RV? repeat! */
		2177	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2178	return 1;
		2179
		2180	/* restore status */
		2181	{
		2182	SV *data_sv = av_pop (state);
		2183	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2184
		2185	errno = data->errorno;
		2186	PL_laststype = data->laststype;
		2187	PL_laststatval = data->laststatval;
		2188	PL_statcache = data->statcache;
		2189
		2190	SvREFCNT_dec (data_sv);
		2191	}
		2192
		2193	/* push result values */
1963	{	2194	{
1964	dSP;	2195	dSP;
1965	SV **bot = PL_stack_base + checkmark;	2196	int i;
1966	int gimme = GIMME_V;
1967		2197
1968	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	2198	EXTEND (SP, AvFILLp (state) + 1);
1969		2199	for (i = 0; i <= AvFILLp (state); ++i)
1970	/* make sure we put something on the stack in scalar context */	2200	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1971	if (gimme == G_SCALAR)
1972	{
1973	if (sp == bot)
1974	XPUSHs (&PL_sv_undef);
1975
1976	SP = bot + 1;
1977	}
1978		2201
1979	PUTBACK;	2202	PUTBACK;
1980	}	2203	}
1981		2204
1982	return NORMAL;	2205	return 0;
1983	}	2206	}
1984		2207
1985	static void	2208	static void
1986	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)	2209	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987	{	2210	{
1988	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	2211	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2212	SV *coro_hv = SvRV (coro_current);
		2213	struct coro *coro = SvSTATE_hv (coro_hv);
1989		2214
1990	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]	2215	/* put our coroutine id on the state arg */
1991	&& PL_op->op_ppaddr != pp_slf)	2216	av_push (state, SvREFCNT_inc_NN (coro_hv));
1992	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught");
1993		2217
1994	if (items > 3)	2218	/* first see whether we have a non-zero priority and set it as AIO prio */
1995	croak ("Coro only supports up to three arguments to SLF functions currently, caught");	2219	if (coro->prio)
		2220	{
		2221	dSP;
1996		2222
1997	CvFLAGS (cv) |= CVf_SLF;	2223	static SV *prio_cv;
1998	CvXSUBANY (cv).any_ptr = (void *)init_cb;	2224	static SV *prio_sv;
1999	slf_cv = cv;
2000		2225
2001	/* we patch the op, and then re-run the whole call */	2226	if (expect_false (!prio_cv))
2002	/* we have to put the same argument on the stack for this to work */	2227	{
2003	/* and this will be done by pp_restore */	2228	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004	slf_restore.op_next = (OP *)&slf_restore;	2229	prio_sv = newSViv (0);
2005	slf_restore.op_type = OP_NULL;	2230	}
2006	slf_restore.op_ppaddr = pp_restore;
2007	slf_restore.op_first = PL_op;
2008		2231
2009	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	2232	PUSHMARK (SP);
2010	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	2233	sv_setiv (prio_sv, coro->prio);
2011	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;	2234	XPUSHs (prio_sv);
2012		2235
2013	PL_op->op_ppaddr = pp_slf;	2236	PUTBACK;
		2237	call_sv (prio_cv, G_VOID | G_DISCARD);
		2238	}
2014		2239
2015	PL_op = (OP *)&slf_restore;	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;
2016	}	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	/*****************************************************************************/
2017		2279
2018	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2280	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019		2281
2020	PROTOTYPES: DISABLE	2282	PROTOTYPES: DISABLE
2021		2283
2022	BOOT:	2284	BOOT:
2023	{	2285	{
2024	#ifdef USE_ITHREADS	2286	#ifdef USE_ITHREADS
2025	MUTEX_INIT (&coro_lock);
2026	# if CORO_PTHREAD	2287	# if CORO_PTHREAD
2027	coro_thx = PERL_GET_CONTEXT;	2288	coro_thx = PERL_GET_CONTEXT;
2028	# endif	2289	# endif
2029	#endif	2290	#endif
2030	BOOT_PAGESIZE;	2291	BOOT_PAGESIZE;
…		…
2050	main_mainstack = PL_mainstack;	2311	main_mainstack = PL_mainstack;
2051	main_top_env = PL_top_env;	2312	main_top_env = PL_top_env;
2052		2313
2053	while (main_top_env->je_prev)	2314	while (main_top_env->je_prev)
2054	main_top_env = main_top_env->je_prev;	2315	main_top_env = main_top_env->je_prev;
		2316
		2317	{
		2318	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2319
		2320	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2321	hv_store_ent (PL_custom_op_names, slf,
		2322	newSVpv ("coro_slf", 0), 0);
		2323
		2324	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2325	hv_store_ent (PL_custom_op_descs, slf,
		2326	newSVpv ("coro schedule like function", 0), 0);
		2327	}
2055		2328
2056	coroapi.ver = CORO_API_VERSION;	2329	coroapi.ver = CORO_API_VERSION;
2057	coroapi.rev = CORO_API_REVISION;	2330	coroapi.rev = CORO_API_REVISION;
2058		2331
2059	coroapi.transfer = api_transfer;	2332	coroapi.transfer = api_transfer;
…		…
2107	RETVAL	2380	RETVAL
2108		2381
2109	void	2382	void
2110	_set_stacklevel (...)	2383	_set_stacklevel (...)
2111	CODE:	2384	CODE:
2112	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);	2385	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2113		2386
2114	void	2387	void
2115	transfer (...)	2388	transfer (...)
		2389	PROTOTYPE: $$
2116	CODE:	2390	CODE:
2117	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2391	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2118		2392
2119	bool	2393	bool
2120	_destroy (SV *coro_sv)	2394	_destroy (SV *coro_sv)
2121	CODE:	2395	CODE:
2122	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2396	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2129	CODE:	2403	CODE:
2130	_exit (code);	2404	_exit (code);
2131		2405
2132	int	2406	int
2133	cctx_stacksize (int new_stacksize = 0)	2407	cctx_stacksize (int new_stacksize = 0)
		2408	PROTOTYPE: ;$
2134	CODE:	2409	CODE:
2135	RETVAL = cctx_stacksize;	2410	RETVAL = cctx_stacksize;
2136	if (new_stacksize)	2411	if (new_stacksize)
2137	{	2412	{
2138	cctx_stacksize = new_stacksize;	2413	cctx_stacksize = new_stacksize;
…		…
2141	OUTPUT:	2416	OUTPUT:
2142	RETVAL	2417	RETVAL
2143		2418
2144	int	2419	int
2145	cctx_max_idle (int max_idle = 0)	2420	cctx_max_idle (int max_idle = 0)
		2421	PROTOTYPE: ;$
2146	CODE:	2422	CODE:
2147	RETVAL = cctx_max_idle;	2423	RETVAL = cctx_max_idle;
2148	if (max_idle > 1)	2424	if (max_idle > 1)
2149	cctx_max_idle = max_idle;	2425	cctx_max_idle = max_idle;
2150	OUTPUT:	2426	OUTPUT:
2151	RETVAL	2427	RETVAL
2152		2428
2153	int	2429	int
2154	cctx_count ()	2430	cctx_count ()
		2431	PROTOTYPE:
2155	CODE:	2432	CODE:
2156	RETVAL = cctx_count;	2433	RETVAL = cctx_count;
2157	OUTPUT:	2434	OUTPUT:
2158	RETVAL	2435	RETVAL
2159		2436
2160	int	2437	int
2161	cctx_idle ()	2438	cctx_idle ()
		2439	PROTOTYPE:
2162	CODE:	2440	CODE:
2163	RETVAL = cctx_idle;	2441	RETVAL = cctx_idle;
2164	OUTPUT:	2442	OUTPUT:
2165	RETVAL	2443	RETVAL
2166		2444
2167	void	2445	void
2168	list ()	2446	list ()
		2447	PROTOTYPE:
2169	PPCODE:	2448	PPCODE:
2170	{	2449	{
2171	struct coro *coro;	2450	struct coro *coro;
2172	for (coro = coro_first; coro; coro = coro->next)	2451	for (coro = coro_first; coro; coro = coro->next)
2173	if (coro->hv)	2452	if (coro->hv)
…		…
2235		2514
2236	void	2515	void
2237	throw (Coro::State self, SV *throw = &PL_sv_undef)	2516	throw (Coro::State self, SV *throw = &PL_sv_undef)
2238	PROTOTYPE: $;$	2517	PROTOTYPE: $;$
2239	CODE:	2518	CODE:
		2519	{
		2520	struct coro *current = SvSTATE_current;
		2521	SV **throwp = self == current ? &coro_throw : &self->throw;
2240	SvREFCNT_dec (self->throw);	2522	SvREFCNT_dec (*throwp);
2241	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2523	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2524	}
2242		2525
2243	void	2526	void
2244	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: $;$
2245	C_ARGS: aTHX_ coro, flags	2529	C_ARGS: aTHX_ coro, flags
2246		2530
2247	SV *	2531	SV *
2248	has_cctx (Coro::State coro)	2532	has_cctx (Coro::State coro)
2249	PROTOTYPE: $	2533	PROTOTYPE: $
…		…
2274	OUTPUT:	2558	OUTPUT:
2275	RETVAL	2559	RETVAL
2276		2560
2277	void	2561	void
2278	force_cctx ()	2562	force_cctx ()
		2563	PROTOTYPE:
2279	CODE:	2564	CODE:
2280	struct coro *coro = SvSTATE (coro_current);
2281	coro->cctx->idle_sp = 0;	2565	SvSTATE_current->cctx->idle_sp = 0;
2282		2566
2283	void	2567	void
2284	swap_defsv (Coro::State self)	2568	swap_defsv (Coro::State self)
2285	PROTOTYPE: $	2569	PROTOTYPE: $
2286	ALIAS:	2570	ALIAS:
…		…
2294	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2578	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295		2579
2296	SV *tmp = *src; *src = *dst; *dst = tmp;	2580	SV *tmp = *src; *src = *dst; *dst = tmp;
2297	}	2581	}
2298		2582
		2583
2299	MODULE = Coro::State PACKAGE = Coro	2584	MODULE = Coro::State PACKAGE = Coro
2300		2585
2301	BOOT:	2586	BOOT:
2302	{	2587	{
2303	int i;	2588	int i;
…		…
2339	}	2624	}
2340		2625
2341	void	2626	void
2342	schedule (...)	2627	schedule (...)
2343	CODE:	2628	CODE:
2344	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items);	2629	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2345		2630
2346	void	2631	void
2347	cede (...)	2632	cede (...)
2348	CODE:	2633	CODE:
2349	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items);	2634	CORO_EXECUTE_SLF_XS (slf_init_cede);
2350		2635
2351	void	2636	void
2352	cede_notself (...)	2637	cede_notself (...)
2353	CODE:	2638	CODE:
2354	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items);	2639	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
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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