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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.274 by root, Sat Nov 15 00:08:30 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 2008 UTC

…		…
142	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
143		143
144	#include "CoroAPI.h"	144	#include "CoroAPI.h"
145		145
146	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
147
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	147	# if CORO_PTHREAD
152	static void *coro_thx;	148	static void *coro_thx;
153	# endif	149	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	150	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166
167	/* helper storage struct for Coro::AIO */
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		151
177	static double (*nvtime)(); /* so why doesn't it take void? */	152	static double (*nvtime)(); /* so why doesn't it take void? */
178		153
179	static U32 cctx_gen;	154	static U32 cctx_gen;
180	static size_t cctx_stacksize = CORO_STACKSIZE;	155	static size_t cctx_stacksize = CORO_STACKSIZE;
181	static struct CoroAPI coroapi;	156	static struct CoroAPI coroapi;
182	static AV *main_mainstack; /* used to differentiate between $main and others */	157	static AV *main_mainstack; /* used to differentiate between $main and others */
183	static JMPENV *main_top_env;	158	static JMPENV *main_top_env;
184	static HV *coro_state_stash, *coro_stash;	159	static HV *coro_state_stash, *coro_stash;
185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	160	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;
187		161
188	static GV *irsgv; /* $/ */	162	static GV *irsgv; /* $/ */
189	static GV *stdoutgv; /* *STDOUT */	163	static GV *stdoutgv; /* *STDOUT */
190	static SV *rv_diehook;	164	static SV *rv_diehook;
191	static SV *rv_warnhook;	165	static SV *rv_warnhook;
…		…
257	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
258	struct coro {	232	struct coro {
259	/* the C coroutine allocated to this perl coroutine, if any */	233	/* the C coroutine allocated to this perl coroutine, if any */
260	coro_cctx *cctx;	234	coro_cctx *cctx;
261		235
262	/* process data */	236	/* state data */
263	struct CoroSLF slf_frame; /* saved slf frame */	237	struct CoroSLF slf_frame; /* saved slf frame */
264	AV *mainstack;	238	AV *mainstack;
265	perl_slots *slot; /* basically the saved sp */	239	perl_slots *slot; /* basically the saved sp */
266		240
267	AV *args; /* data associated with this coroutine (initial args) */	241	AV *args; /* data associated with this coroutine (initial args) */
268	int refcnt; /* coroutines are refcounted, yes */	242	int refcnt; /* coroutines are refcounted, yes */
269	int flags; /* CF_ flags */	243	int flags; /* CF_ flags */
270	HV *hv; /* the perl hash associated with this coro, if any */	244	HV *hv; /* the perl hash associated with this coro, if any */
		245	void (*on_destroy)(pTHX_ struct coro *coro);
271		246
272	/* statistics */	247	/* statistics */
273	int usecount; /* number of transfers to this coro */	248	int usecount; /* number of transfers to this coro */
274		249
275	/* coro process data */	250	/* coro process data */
…		…
284	};	259	};
285		260
286	typedef struct coro *Coro__State;	261	typedef struct coro *Coro__State;
287	typedef struct coro *Coro__State_or_hashref;	262	typedef struct coro *Coro__State_or_hashref;
288		263
		264	/* the following variables are effectively part of the perl context */
		265	/* and get copied between struct coro and these variables */
		266	/* the mainr easonw e don't support windows process emulation */
289	static struct CoroSLF slf_frame; /* the current slf frame */	267	static struct CoroSLF slf_frame; /* the current slf frame */
		268	static SV *coro_throw;
290		269
291	/** Coro ********************************************************************/	270	/** Coro ********************************************************************/
292		271
293	#define PRIO_MAX 3	272	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	273	#define PRIO_HIGH 1
…		…
395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	374	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396		375
397	return 0;	376	return 0;
398	}	377	}
399		378
400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	379	#define CORO_MAGIC_type_cv 26
401	#define CORO_MAGIC_type_state PERL_MAGIC_ext	380	#define CORO_MAGIC_type_state PERL_MAGIC_ext
402		381
403	static MGVTBL coro_cv_vtbl = {	382	static MGVTBL coro_cv_vtbl = {
404	0, 0, 0, 0,	383	0, 0, 0, 0,
405	coro_cv_free	384	coro_cv_free
406	};	385	};
407		386
		387	#define CORO_MAGIC_NN(sv, type) \
		388	(expect_true (SvMAGIC (sv)->mg_type == type) \
		389	? SvMAGIC (sv) \
		390	: mg_find (sv, type))
		391
408	#define CORO_MAGIC(sv, type) \	392	#define CORO_MAGIC(sv, type) \
409	SvMAGIC (sv) \	393	(expect_true (SvMAGIC (sv)) \
410	? SvMAGIC (sv)->mg_type == type \	394	? CORO_MAGIC_NN (sv, type) \
411	? SvMAGIC (sv) \
412	: mg_find (sv, type) \
413	: 0	395	: 0)
414		396
415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	397	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	398	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417		399
418	INLINE struct coro *	400	INLINE struct coro *
419	SvSTATE_ (pTHX_ SV *coro)	401	SvSTATE_ (pTHX_ SV *coro)
420	{	402	{
421	HV *stash;	403	HV *stash;
…		…
438	mg = CORO_MAGIC_state (coro);	420	mg = CORO_MAGIC_state (coro);
439	return (struct coro *)mg->mg_ptr;	421	return (struct coro *)mg->mg_ptr;
440	}	422	}
441		423
442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	424	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		425
		426	/* faster than SvSTATE, but expects a coroutine hv */
		427	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		428	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443		429
444	/* the next two functions merely cache the padlists */	430	/* the next two functions merely cache the padlists */
445	static void	431	static void
446	get_padlist (pTHX_ CV *cv)	432	get_padlist (pTHX_ CV *cv)
447	{	433	{
…		…
515	}	501	}
516		502
517	PUTBACK;	503	PUTBACK;
518	}	504	}
519		505
520	slf_frame = c->slf_frame;	506	slf_frame = c->slf_frame;
		507	coro_throw = c->throw;
521	}	508	}
522		509
523	static void	510	static void
524	save_perl (pTHX_ Coro__State c)	511	save_perl (pTHX_ Coro__State c)
525	{	512	{
		513	c->throw = coro_throw;
526	c->slf_frame = slf_frame;	514	c->slf_frame = slf_frame;
527		515
528	{	516	{
529	dSP;	517	dSP;
530	I32 cxix = cxstack_ix;	518	I32 cxix = cxstack_ix;
…		…
811		799
812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	800	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813	}	801	}
814		802
815	static void	803	static void
816	prepare_nop (aTHX_ struct coro_transfer_args *ta)	804	prepare_nop (pTHX_ struct coro_transfer_args *ta)
817	{	805	{
818	/* kind of mega-hacky, but works */	806	/* kind of mega-hacky, but works */
819	ta->next = ta->prev = (struct coro *)ta;	807	ta->next = ta->prev = (struct coro *)ta;
820	}	808	}
821		809
822	static int	810	static int
823	slf_check_nop (aTHX)	811	slf_check_nop (pTHX_ struct CoroSLF *frame)
824	{	812	{
825	return 0;	813	return 0;
826	}	814	}
827		815
828	static void	816	static void NOINLINE /* noinline to keep it out of the transfer fast path */
829	coro_setup (pTHX_ struct coro *coro)	817	coro_setup (pTHX_ struct coro *coro)
830	{	818	{
831	/*	819	/*
832	* emulate part of the perl startup here.	820	* emulate part of the perl startup here.
833	*/	821	*/
…		…
876	/* this newly created coroutine might be run on an existing cctx which most	864	/* this newly created coroutine might be run on an existing cctx which most
877	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	865	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878	*/	866	*/
879	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	867	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	868	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		869
		870	coro_throw = coro->throw;
881	}	871	}
882		872
883	static void	873	static void
884	coro_destruct (pTHX_ struct coro *coro)	874	coro_destruct (pTHX_ struct coro *coro)
885	{	875	{
…		…
909		899
910	SvREFCNT_dec (PL_diehook);	900	SvREFCNT_dec (PL_diehook);
911	SvREFCNT_dec (PL_warnhook);	901	SvREFCNT_dec (PL_warnhook);
912		902
913	SvREFCNT_dec (coro->saved_deffh);	903	SvREFCNT_dec (coro->saved_deffh);
914	SvREFCNT_dec (coro->throw);	904	SvREFCNT_dec (coro_throw);
915		905
916	coro_destruct_stacks (aTHX);	906	coro_destruct_stacks (aTHX);
917	}	907	}
918		908
919	INLINE void	909	INLINE void
…		…
929	static int	919	static int
930	runops_trace (pTHX)	920	runops_trace (pTHX)
931	{	921	{
932	COP *oldcop = 0;	922	COP *oldcop = 0;
933	int oldcxix = -2;	923	int oldcxix = -2;
934	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */	924	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935	coro_cctx *cctx = coro->cctx;	925	coro_cctx *cctx = coro->cctx;
936		926
937	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	927	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938	{	928	{
939	PERL_ASYNC_CHECK ();	929	PERL_ASYNC_CHECK ();
…		…
1088		1078
1089	/* the tail of transfer: execute stuff we can only do after a transfer */	1079	/* the tail of transfer: execute stuff we can only do after a transfer */
1090	INLINE void	1080	INLINE void
1091	transfer_tail (pTHX)	1081	transfer_tail (pTHX)
1092	{	1082	{
1093	struct coro *next = (struct coro *)transfer_next;
1094	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097	free_coro_mortal (aTHX);	1083	free_coro_mortal (aTHX);
1098	UNLOCK;
1099
1100	if (expect_false (next->throw))
1101	{
1102	SV *exception = sv_2mortal (next->throw);
1103
1104	next->throw = 0;
1105	sv_setsv (ERRSV, exception);
1106	croak (0);
1107	}
1108	}	1084	}
1109		1085
1110	/*	1086	/*
1111	* this is a _very_ stripped down perl interpreter ;)	1087	* this is a _very_ stripped down perl interpreter ;)
1112	*/	1088	*/
…		…
1127		1103
1128	/* inject a fake subroutine call to cctx_init */	1104	/* inject a fake subroutine call to cctx_init */
1129	cctx_prepare (aTHX_ (coro_cctx *)arg);	1105	cctx_prepare (aTHX_ (coro_cctx *)arg);
1130		1106
1131	/* cctx_run is the alternative tail of transfer() */	1107	/* cctx_run is the alternative tail of transfer() */
1132	/* TODO: throwing an exception here might be deadly, VERIFY */
1133	transfer_tail (aTHX);	1108	transfer_tail (aTHX);
1134		1109
1135	/* somebody or something will hit me for both perl_run and PL_restartop */	1110	/* somebody or something will hit me for both perl_run and PL_restartop */
1136	PL_restartop = PL_op;	1111	PL_restartop = PL_op;
1137	perl_run (PL_curinterp);	1112	perl_run (PL_curinterp);
…		…
1293	/** coroutine switching *****************************************************/	1268	/** coroutine switching *****************************************************/
1294		1269
1295	static void	1270	static void
1296	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1271	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297	{	1272	{
		1273	/* TODO: throwing up here is considered harmful */
		1274
1298	if (expect_true (prev != next))	1275	if (expect_true (prev != next))
1299	{	1276	{
1300	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1277	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1278	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302		1279
…		…
1312	#endif	1289	#endif
1313	}	1290	}
1314	}	1291	}
1315		1292
1316	/* always use the TRANSFER macro */	1293	/* always use the TRANSFER macro */
1317	static void NOINLINE	1294	static void NOINLINE /* noinline so we have a fixed stackframe */
1318	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1295	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319	{	1296	{
1320	dSTACKLEVEL;	1297	dSTACKLEVEL;
1321		1298
1322	/* sometimes transfer is only called to set idle_sp */	1299	/* sometimes transfer is only called to set idle_sp */
1323	if (expect_false (!next))	1300	if (expect_false (!next))
1324	{	1301	{
1325	((coro_cctx *)prev)->idle_sp = stacklevel;	1302	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1326	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1303	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327	}	1304	}
1328	else if (expect_true (prev != next))	1305	else if (expect_true (prev != next))
1329	{	1306	{
1330	coro_cctx *prev__cctx;	1307	coro_cctx *prev__cctx;
…		…
1337	prev->flags |= CF_RUNNING;	1314	prev->flags |= CF_RUNNING;
1338	}	1315	}
1339		1316
1340	prev->flags &= ~CF_RUNNING;	1317	prev->flags &= ~CF_RUNNING;
1341	next->flags |= CF_RUNNING;	1318	next->flags |= CF_RUNNING;
1342
1343	LOCK;
1344		1319
1345	/* first get rid of the old state */	1320	/* first get rid of the old state */
1346	save_perl (aTHX_ prev);	1321	save_perl (aTHX_ prev);
1347		1322
1348	if (expect_false (next->flags & CF_NEW))	1323	if (expect_false (next->flags & CF_NEW))
…		…
1357		1332
1358	prev__cctx = prev->cctx;	1333	prev__cctx = prev->cctx;
1359		1334
1360	/* possibly untie and reuse the cctx */	1335	/* possibly untie and reuse the cctx */
1361	if (expect_true (	1336	if (expect_true (
1362	prev__cctx->idle_sp == stacklevel	1337	prev__cctx->idle_sp == (void *)stacklevel
1363	&& !(prev__cctx->flags & CC_TRACE)	1338	&& !(prev__cctx->flags & CC_TRACE)
1364	&& !force_cctx	1339	&& !force_cctx
1365	))	1340	))
1366	{	1341	{
1367	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1342	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1381	++next->usecount;	1356	++next->usecount;
1382		1357
1383	if (expect_true (!next->cctx))	1358	if (expect_true (!next->cctx))
1384	next->cctx = cctx_get (aTHX);	1359	next->cctx = cctx_get (aTHX);
1385		1360
1386	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387	transfer_next = next;
1388
1389	if (expect_false (prev__cctx != next->cctx))	1361	if (expect_false (prev__cctx != next->cctx))
1390	{	1362	{
1391	prev__cctx->top_env = PL_top_env;	1363	prev__cctx->top_env = PL_top_env;
1392	PL_top_env = next->cctx->top_env;	1364	PL_top_env = next->cctx->top_env;
1393	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1365	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1406	coro_state_destroy (pTHX_ struct coro *coro)	1378	coro_state_destroy (pTHX_ struct coro *coro)
1407	{	1379	{
1408	if (coro->flags & CF_DESTROYED)	1380	if (coro->flags & CF_DESTROYED)
1409	return 0;	1381	return 0;
1410		1382
		1383	if (coro->on_destroy)
		1384	coro->on_destroy (aTHX_ coro);
		1385
1411	coro->flags |= CF_DESTROYED;	1386	coro->flags |= CF_DESTROYED;
1412		1387
1413	if (coro->flags & CF_READY)	1388	if (coro->flags & CF_READY)
1414	{	1389	{
1415	/* reduce nready, as destroying a ready coro effectively unreadies it */	1390	/* reduce nready, as destroying a ready coro effectively unreadies it */
1416	/* alternative: look through all ready queues and remove the coro */	1391	/* alternative: look through all ready queues and remove the coro */
1417	LOCK;
1418	--coro_nready;	1392	--coro_nready;
1419	UNLOCK;
1420	}	1393	}
1421	else	1394	else
1422	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1395	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423		1396
1424	if (coro->mainstack && coro->mainstack != main_mainstack)	1397	if (coro->mainstack && coro->mainstack != main_mainstack)
…		…
1502	TRANSFER (ta, 1);	1475	TRANSFER (ta, 1);
1503	}	1476	}
1504		1477
1505	/** Coro ********************************************************************/	1478	/** Coro ********************************************************************/
1506		1479
1507	static void	1480	INLINE void
1508	coro_enq (pTHX_ SV *coro_sv)	1481	coro_enq (pTHX_ struct coro *coro)
1509	{	1482	{
1510	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1483	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511	}	1484	}
1512		1485
1513	static SV *	1486	INLINE SV *
1514	coro_deq (pTHX)	1487	coro_deq (pTHX)
1515	{	1488	{
1516	int prio;	1489	int prio;
1517		1490
1518	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1491	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1537	if (coro->flags & CF_READY)	1510	if (coro->flags & CF_READY)
1538	return 0;	1511	return 0;
1539		1512
1540	coro->flags |= CF_READY;	1513	coro->flags |= CF_READY;
1541		1514
1542	LOCK;
1543
1544	sv_hook = coro_nready ? 0 : coro_readyhook;	1515	sv_hook = coro_nready ? 0 : coro_readyhook;
1545	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1516	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546		1517
1547	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1518	coro_enq (aTHX_ coro);
1548	++coro_nready;	1519	++coro_nready;
1549		1520
1550	UNLOCK;
1551
1552	if (sv_hook)	1521	if (sv_hook)
1553	{	1522	{
1554	dSP;	1523	dSP;
1555		1524
1556	ENTER;	1525	ENTER;
…		…
1582	{	1551	{
1583	SV *prev_sv, *next_sv;	1552	SV *prev_sv, *next_sv;
1584		1553
1585	for (;;)	1554	for (;;)
1586	{	1555	{
1587	LOCK;
1588	next_sv = coro_deq (aTHX);	1556	next_sv = coro_deq (aTHX);
1589		1557
1590	/* nothing to schedule: call the idle handler */	1558	/* nothing to schedule: call the idle handler */
1591	if (expect_false (!next_sv))	1559	if (expect_false (!next_sv))
1592	{	1560	{
1593	dSP;	1561	dSP;
1594	UNLOCK;
1595		1562
1596	ENTER;	1563	ENTER;
1597	SAVETMPS;	1564	SAVETMPS;
1598		1565
1599	PUSHMARK (SP);	1566	PUSHMARK (SP);
…		…
1604	FREETMPS;	1571	FREETMPS;
1605	LEAVE;	1572	LEAVE;
1606	continue;	1573	continue;
1607	}	1574	}
1608		1575
1609	ta->next = SvSTATE (next_sv);	1576	ta->next = SvSTATE_hv (next_sv);
1610		1577
1611	/* cannot transfer to destroyed coros, skip and look for next */	1578	/* cannot transfer to destroyed coros, skip and look for next */
1612	if (expect_false (ta->next->flags & CF_DESTROYED))	1579	if (expect_false (ta->next->flags & CF_DESTROYED))
1613	{	1580	{
1614	UNLOCK;
1615	SvREFCNT_dec (next_sv);	1581	SvREFCNT_dec (next_sv);
1616	/* coro_nready has already been taken care of by destroy */	1582	/* coro_nready has already been taken care of by destroy */
1617	continue;	1583	continue;
1618	}	1584	}
1619		1585
1620	--coro_nready;	1586	--coro_nready;
1621	UNLOCK;
1622	break;	1587	break;
1623	}	1588	}
1624		1589
1625	/* free this only after the transfer */	1590	/* free this only after the transfer */
1626	prev_sv = SvRV (coro_current);	1591	prev_sv = SvRV (coro_current);
1627	ta->prev = SvSTATE (prev_sv);	1592	ta->prev = SvSTATE_hv (prev_sv);
1628	TRANSFER_CHECK (*ta);	1593	TRANSFER_CHECK (*ta);
1629	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1594	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630	ta->next->flags &= ~CF_READY;	1595	ta->next->flags &= ~CF_READY;
1631	SvRV_set (coro_current, next_sv);	1596	SvRV_set (coro_current, next_sv);
1632		1597
1633	LOCK;
1634	free_coro_mortal (aTHX);	1598	free_coro_mortal (aTHX);
1635	coro_mortal = prev_sv;	1599	coro_mortal = prev_sv;
1636	UNLOCK;
1637	}	1600	}
1638		1601
1639	INLINE void	1602	INLINE void
1640	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1603	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641	{	1604	{
…		…
1720	else	1683	else
1721	coro->slot->runops = RUNOPS_DEFAULT;	1684	coro->slot->runops = RUNOPS_DEFAULT;
1722	}	1685	}
1723	}	1686	}
1724		1687
1725	#if 0	1688	/*****************************************************************************/
		1689	/* schedule-like-function opcode (SLF) */
		1690
		1691	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1692	static const CV *slf_cv;
		1693	static SV **slf_argv;
		1694	static int slf_argc, slf_arga; /* count, allocated */
		1695	static I32 slf_ax; /* top of stack, for restore */
		1696
		1697	/* this restores the stack in the case we patched the entersub, to */
		1698	/* recreate the stack frame as perl will on following calls */
		1699	/* since entersub cleared the stack */
		1700	static OP *
		1701	pp_restore (pTHX)
		1702	{
		1703	int i;
		1704	SV **SP = PL_stack_base + slf_ax;
		1705
		1706	PUSHMARK (SP);
		1707
		1708	EXTEND (SP, slf_argc + 1);
		1709
		1710	for (i = 0; i < slf_argc; ++i)
		1711	PUSHs (sv_2mortal (slf_argv [i]));
		1712
		1713	PUSHs ((SV *)CvGV (slf_cv));
		1714
		1715	RETURNOP (slf_restore.op_first);
		1716	}
		1717
1726	static int	1718	static void
1727	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1719	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1728	{	1720	{
1729	AV *padlist;	1721	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1730	AV *av = (AV *)mg->mg_obj;
1731
1732	abort ();
1733
1734	return 0;
1735	}	1722	}
1736		1723
1737	static MGVTBL coro_gensub_vtbl = {	1724	static void
1738	0, 0, 0, 0,	1725	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739	coro_gensub_free	1726	{
1740	};	1727	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1741	#endif	1728
		1729	frame->prepare = slf_prepare_set_stacklevel;
		1730	frame->check = slf_check_nop;
		1731	frame->data = (void *)SvIV (arg [0]);
		1732	}
		1733
		1734	static void
		1735	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1736	{
		1737	SV **arg = (SV **)slf_frame.data;
		1738
		1739	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1740	}
		1741
		1742	static void
		1743	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1744	{
		1745	if (items != 2)
		1746	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1747
		1748	frame->prepare = slf_prepare_transfer;
		1749	frame->check = slf_check_nop;
		1750	frame->data = (void *)arg; /* let's hope it will stay valid */
		1751	}
		1752
		1753	static void
		1754	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1755	{
		1756	frame->prepare = prepare_schedule;
		1757	frame->check = slf_check_nop;
		1758	}
		1759
		1760	static void
		1761	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1762	{
		1763	frame->prepare = prepare_cede;
		1764	frame->check = slf_check_nop;
		1765	}
		1766
		1767	static void
		1768	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1769	{
		1770	frame->prepare = prepare_cede_notself;
		1771	frame->check = slf_check_nop;
		1772	}
		1773
		1774	/* we hijack an hopefully unused CV flag for our purposes */
		1775	#define CVf_SLF 0x4000
		1776
		1777	/*
		1778	* these not obviously related functions are all rolled into one
		1779	* function to increase chances that they all will call transfer with the same
		1780	* stack offset
		1781	* SLF stands for "schedule-like-function".
		1782	*/
		1783	static OP *
		1784	pp_slf (pTHX)
		1785	{
		1786	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1787
		1788	/* set up the slf frame, unless it has already been set-up */
		1789	/* the latter happens when a new coro has been started */
		1790	/* or when a new cctx was attached to an existing coroutine */
		1791	if (expect_true (!slf_frame.prepare))
		1792	{
		1793	/* first iteration */
		1794	dSP;
		1795	SV **arg = PL_stack_base + TOPMARK + 1;
		1796	int items = SP - arg; /* args without function object */
		1797	SV *gv = *sp;
		1798
		1799	/* do a quick consistency check on the "function" object, and if it isn't */
		1800	/* for us, divert to the real entersub */
		1801	if (SvTYPE (gv) != SVt_PVGV
		1802	|| !GvCV (gv)
		1803	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		1804	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1805
		1806	if (!(PL_op->op_flags & OPf_STACKED))
		1807	{
		1808	/* ampersand-form of call, use @_ instead of stack */
		1809	AV *av = GvAV (PL_defgv);
		1810	arg = AvARRAY (av);
		1811	items = AvFILLp (av) + 1;
		1812	}
		1813
		1814	/* now call the init function, which needs to set up slf_frame */
		1815	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1816	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1817
		1818	/* pop args */
		1819	SP = PL_stack_base + POPMARK;
		1820
		1821	PUTBACK;
		1822	}
		1823
		1824	/* now that we have a slf_frame, interpret it! */
		1825	/* we use a callback system not to make the code needlessly */
		1826	/* complicated, but so we can run multiple perl coros from one cctx */
		1827
		1828	do
		1829	{
		1830	struct coro_transfer_args ta;
		1831
		1832	slf_frame.prepare (aTHX_ &ta);
		1833	TRANSFER (ta, 0);
		1834
		1835	checkmark = PL_stack_sp - PL_stack_base;
		1836	}
		1837	while (slf_frame.check (aTHX_ &slf_frame));
		1838
		1839	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		1840
		1841	/* return value handling - mostly like entersub */
		1842	{
		1843	dSP;
		1844	SV **bot = PL_stack_base + checkmark;
		1845	int gimme = GIMME_V;
		1846
		1847	/* make sure we put something on the stack in scalar context */
		1848	if (gimme == G_SCALAR)
		1849	{
		1850	if (sp == bot)
		1851	XPUSHs (&PL_sv_undef);
		1852
		1853	SP = bot + 1;
		1854	}
		1855
		1856	PUTBACK;
		1857	}
		1858
		1859	/* exception handling */
		1860	if (expect_false (coro_throw))
		1861	{
		1862	SV *exception = sv_2mortal (coro_throw);
		1863
		1864	coro_throw = 0;
		1865	sv_setsv (ERRSV, exception);
		1866	croak (0);
		1867	}
		1868
		1869	return NORMAL;
		1870	}
		1871
		1872	static void
		1873	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1874	{
		1875	int i;
		1876	SV **arg = PL_stack_base + ax;
		1877	int items = PL_stack_sp - arg + 1;
		1878
		1879	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1880
		1881	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1882	&& PL_op->op_ppaddr != pp_slf)
		1883	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1884
		1885	CvFLAGS (cv) |= CVf_SLF;
		1886	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1887	slf_cv = cv;
		1888
		1889	/* we patch the op, and then re-run the whole call */
		1890	/* we have to put the same argument on the stack for this to work */
		1891	/* and this will be done by pp_restore */
		1892	slf_restore.op_next = (OP *)&slf_restore;
		1893	slf_restore.op_type = OP_CUSTOM;
		1894	slf_restore.op_ppaddr = pp_restore;
		1895	slf_restore.op_first = PL_op;
		1896
		1897	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1898
		1899	if (PL_op->op_flags & OPf_STACKED)
		1900	{
		1901	if (items > slf_arga)
		1902	{
		1903	slf_arga = items;
		1904	free (slf_argv);
		1905	slf_argv = malloc (slf_arga * sizeof (SV *));
		1906	}
		1907
		1908	slf_argc = items;
		1909
		1910	for (i = 0; i < items; ++i)
		1911	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1912	}
		1913	else
		1914	slf_argc = 0;
		1915
		1916	PL_op->op_ppaddr = pp_slf;
		1917	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1918
		1919	PL_op = (OP *)&slf_restore;
		1920	}
1742		1921
1743	/*****************************************************************************/	1922	/*****************************************************************************/
1744	/* PerlIO::cede */	1923	/* PerlIO::cede */
1745		1924
1746	typedef struct	1925	typedef struct
…		…
1814	PerlIOBuf_get_cnt,	1993	PerlIOBuf_get_cnt,
1815	PerlIOBuf_set_ptrcnt,	1994	PerlIOBuf_set_ptrcnt,
1816	};	1995	};
1817		1996
1818	/*****************************************************************************/	1997	/*****************************************************************************/
		1998	/* Coro::Semaphore */
1819		1999
1820	static const CV *slf_cv; /* for quick consistency check */	2000	static void
1821		2001	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	{	2002	{
1833	dSP;	2003	SV *count_sv = AvARRAY (av)[0];
		2004	IV count = SvIVX (count_sv);
1834		2005
1835	PUSHMARK (SP);	2006	count += adjust;
		2007	SvIVX (count_sv) = count;
1836		2008
1837	EXTEND (SP, 3);	2009	/* now wake up as many waiters as are expected to lock */
1838	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	2010	while (count > 0 && AvFILLp (av) > 0)
1839	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	2011	{
1840	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));	2012	SV *cb;
1841	PUSHs ((SV *)CvGV (slf_cv));
1842		2013
1843	RETURNOP (slf_restore.op_first);	2014	/* swap first two elements so we can shift a waiter */
1844	}	2015	AvARRAY (av)[0] = AvARRAY (av)[1];
		2016	AvARRAY (av)[1] = count_sv;
		2017	cb = av_shift (av);
1845		2018
		2019	if (SvOBJECT (cb))
		2020	api_ready (aTHX_ cb);
		2021	else
		2022	croak ("callbacks not yet supported");
		2023
		2024	SvREFCNT_dec (cb);
		2025
		2026	--count;
		2027	}
		2028	}
		2029
		2030	static void
		2031	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2032	{
		2033	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2034	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2035	}
		2036
1846	static void	2037	static int
1847	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	2038	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1848	{	2039	{
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;	2040	AV *av = (AV *)frame->data;
		2041	SV *count_sv = AvARRAY (av)[0];
1866		2042
1867	prepare_transfer (ta, arg [0], arg [1]);	2043	if (SvIVX (count_sv) > 0)
1868	}	2044	{
		2045	SvSTATE_current->on_destroy = 0;
		2046	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2047	return 0;
		2048	}
		2049	else
		2050	{
		2051	int i;
		2052	/* if we were woken up but can't down, we look through the whole */
		2053	/* waiters list and only add us if we aren't in there already */
		2054	/* this avoids some degenerate memory usage cases */
1869		2055
1870	static void	2056	for (i = 1; i <= AvFILLp (av); ++i)
1871	slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2057	if (AvARRAY (av)[i] == SvRV (coro_current))
1872	{	2058	return 1;
1873	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875		2059
1876	frame->prepare = slf_prepare_transfer;	2060	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1877	frame->check = slf_check_nop;	2061	return 1;
1878	frame->data = (void *)arg; /* let's hope it will stay valid */	2062	}
1879	}	2063	}
1880		2064
1881	static void	2065	static void
1882	slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2066	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1883	{	2067	{
		2068	AV *av = (AV *)SvRV (arg [0]);
		2069
		2070	if (SvIVX (AvARRAY (av)[0]) > 0)
		2071	{
		2072	frame->data = (void *)av;
		2073	frame->prepare = prepare_nop;
		2074	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2075	}
		2076	else
		2077	{
		2078	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2079
		2080	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
1884	frame->prepare = prepare_schedule;	2081	frame->prepare = prepare_schedule;
		2082
		2083	/* to avoid race conditions when a woken-up coro gets terminated */
		2084	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2085	assert (!SvSTATE_current->on_destroy);//D
		2086	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2087	}
		2088
1885	frame->check = slf_check_nop;	2089	frame->check = slf_check_semaphore_down;
1886	}
1887		2090
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	}	2091	}
1894		2092
1895	static void	2093	/*****************************************************************************/
1896	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)	2094	/* gensub: simple closure generation utility */
1897	{
1898	frame->prepare = prepare_cede_notself;
1899	frame->check = slf_check_nop;
1900	}
1901		2095
1902	/* we hijack an hopefully unused CV flag for our purposes */	2096	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1903	#define CVf_SLF 0x4000
1904		2097
1905	/*	2098	/* create a closure from XS, returns a code reference */
1906	* these not obviously related functions are all rolled into one	2099	/* 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	2100	/* the callback must use dXSARGS/XSRETURN */
1908	* stack offset
1909	* SLF stands for "schedule-like-function".
1910	*/
1911	static OP *	2101	static SV *
1912	pp_slf (pTHX)	2102	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1913	{	2103	{
1914	I32 checkmark; /* mark SP to see how many elements check has pushed */	2104	CV *cv = (CV *)newSV (0);
1915		2105
1916	/* set up the slf frame, unless it has already been set-up */	2106	sv_upgrade ((SV *)cv, SVt_PVCV);
1917	/* the latter happens when a new coro has been started */	2107
1918	/* or when a new cctx was attached to an existing coroutine */	2108	CvANON_on (cv);
1919	if (expect_true (!slf_frame.prepare))	2109	CvISXSUB_on (cv);
		2110	CvXSUB (cv) = xsub;
		2111	GENSUB_ARG = arg;
		2112
		2113	return newRV_noinc ((SV *)cv);
		2114	}
		2115
		2116	/*****************************************************************************/
		2117	/* Coro::AIO */
		2118
		2119	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2120
		2121	/* helper storage struct */
		2122	struct io_state
		2123	{
		2124	int errorno;
		2125	I32 laststype; /* U16 in 5.10.0 */
		2126	int laststatval;
		2127	Stat_t statcache;
		2128	};
		2129
		2130	static void
		2131	coro_aio_callback (pTHX_ CV *cv)
		2132	{
		2133	dXSARGS;
		2134	AV *state = (AV *)GENSUB_ARG;
		2135	SV *coro = av_pop (state);
		2136	SV *data_sv = newSV (sizeof (struct io_state));
		2137
		2138	av_extend (state, items);
		2139
		2140	sv_upgrade (data_sv, SVt_PV);
		2141	SvCUR_set (data_sv, sizeof (struct io_state));
		2142	SvPOK_only (data_sv);
		2143
1920	{	2144	{
1921	/* first iteration */	2145	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		2146
1927	/* do a quick consistency check on the "function" object, and if it isn't */	2147	data->errorno = errno;
1928	/* for us, divert to the real entersub */	2148	data->laststype = PL_laststype;
1929	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))	2149	data->laststatval = PL_laststatval;
1930	return PL_ppaddr[OP_ENTERSUB](aTHX);	2150	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	}	2151	}
1947		2152
1948	/* now interpret the slf_frame */	2153	/* 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	{	2154	{
1954	struct coro_transfer_args ta;	2155	int i;
1955		2156
1956	slf_frame.prepare (aTHX_ &ta);	2157	for (i = 0; i < items; ++i)
1957	TRANSFER (ta, 0);	2158	av_push (state, SvREFCNT_inc_NN (ST (i)));
1958
1959	checkmark = PL_stack_sp - PL_stack_base;
1960	}	2159	}
1961	while (slf_frame.check (aTHX_ &slf_frame));
1962		2160
		2161	av_push (state, data_sv);
		2162
		2163	api_ready (aTHX_ coro);
		2164	SvREFCNT_dec (coro);
		2165	SvREFCNT_dec ((AV *)state);
		2166	}
		2167
		2168	static int
		2169	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2170	{
		2171	AV *state = (AV *)frame->data;
		2172
		2173	/* one element that is an RV? repeat! */
		2174	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2175	return 1;
		2176
		2177	/* restore status */
		2178	{
		2179	SV *data_sv = av_pop (state);
		2180	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2181
		2182	errno = data->errorno;
		2183	PL_laststype = data->laststype;
		2184	PL_laststatval = data->laststatval;
		2185	PL_statcache = data->statcache;
		2186
		2187	SvREFCNT_dec (data_sv);
		2188	}
		2189
		2190	/* push result values */
1963	{	2191	{
1964	dSP;	2192	dSP;
1965	SV **bot = PL_stack_base + checkmark;	2193	int i;
1966	int gimme = GIMME_V;
1967		2194
1968	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	2195	EXTEND (SP, AvFILLp (state) + 1);
1969		2196	for (i = 0; i <= AvFILLp (state); ++i)
1970	/* make sure we put something on the stack in scalar context */	2197	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		2198
1979	PUTBACK;	2199	PUTBACK;
1980	}	2200	}
1981		2201
1982	return NORMAL;	2202	return 0;
1983	}	2203	}
1984		2204
1985	static void	2205	static void
1986	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)	2206	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1987	{	2207	{
1988	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	2208	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2209	SV *coro_hv = SvRV (coro_current);
		2210	struct coro *coro = SvSTATE_hv (coro_hv);
1989		2211
1990	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]	2212	/* put our coroutine id on the state arg */
1991	&& PL_op->op_ppaddr != pp_slf)	2213	av_push (state, SvREFCNT_inc_NN (coro_hv));
1992	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993		2214
1994	if (items > 3)	2215	/* 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");	2216	if (coro->prio)
		2217	{
		2218	dSP;
1996		2219
1997	CvFLAGS (cv) |= CVf_SLF;	2220	static SV *prio_cv;
1998	CvXSUBANY (cv).any_ptr = (void *)init_cb;	2221	static SV *prio_sv;
1999	slf_cv = cv;
2000		2222
2001	/* we patch the op, and then re-run the whole call */	2223	if (expect_false (!prio_cv))
2002	/* we have to put the same argument on the stack for this to work */	2224	{
2003	/* and this will be done by pp_restore */	2225	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2004	slf_restore.op_next = (OP *)&slf_restore;	2226	prio_sv = newSViv (0);
2005	slf_restore.op_type = OP_NULL;	2227	}
2006	slf_restore.op_ppaddr = pp_restore;
2007	slf_restore.op_first = PL_op;
2008		2228
2009	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	2229	PUSHMARK (SP);
2010	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	2230	sv_setiv (prio_sv, coro->prio);
2011	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;	2231	XPUSHs (prio_sv);
2012		2232
2013	PL_op->op_ppaddr = pp_slf;	2233	PUTBACK;
		2234	call_sv (prio_cv, G_VOID | G_DISCARD);
		2235	}
2014		2236
2015	PL_op = (OP *)&slf_restore;	2237	/* now call the original request */
		2238	{
		2239	dSP;
		2240	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2241	int i;
		2242
		2243	PUSHMARK (SP);
		2244
		2245	/* first push all args to the stack */
		2246	EXTEND (SP, items + 1);
		2247
		2248	for (i = 0; i < items; ++i)
		2249	PUSHs (arg [i]);
		2250
		2251	/* now push the callback closure */
		2252	PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2253
		2254	/* now call the AIO function - we assume our request is uncancelable */
		2255	PUTBACK;
		2256	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2257	}
		2258
		2259	/* now that the requets is going, we loop toll we have a result */
		2260	frame->data = (void *)state;
		2261	frame->prepare = prepare_schedule;
		2262	frame->check = slf_check_aio_req;
2016	}	2263	}
		2264
		2265	static void
		2266	coro_aio_req_xs (pTHX_ CV *cv)
		2267	{
		2268	dVAR;
		2269	dXSARGS;
		2270
		2271	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2272
		2273	XSRETURN_EMPTY;
		2274	}
		2275
		2276	/*****************************************************************************/
2017		2277
2018	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2278	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2019		2279
2020	PROTOTYPES: DISABLE	2280	PROTOTYPES: DISABLE
2021		2281
2022	BOOT:	2282	BOOT:
2023	{	2283	{
2024	#ifdef USE_ITHREADS	2284	#ifdef USE_ITHREADS
2025	MUTEX_INIT (&coro_lock);
2026	# if CORO_PTHREAD	2285	# if CORO_PTHREAD
2027	coro_thx = PERL_GET_CONTEXT;	2286	coro_thx = PERL_GET_CONTEXT;
2028	# endif	2287	# endif
2029	#endif	2288	#endif
2030	BOOT_PAGESIZE;	2289	BOOT_PAGESIZE;
…		…
2050	main_mainstack = PL_mainstack;	2309	main_mainstack = PL_mainstack;
2051	main_top_env = PL_top_env;	2310	main_top_env = PL_top_env;
2052		2311
2053	while (main_top_env->je_prev)	2312	while (main_top_env->je_prev)
2054	main_top_env = main_top_env->je_prev;	2313	main_top_env = main_top_env->je_prev;
		2314
		2315	{
		2316	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2317
		2318	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2319	hv_store_ent (PL_custom_op_names, slf,
		2320	newSVpv ("coro_slf", 0), 0);
		2321
		2322	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2323	hv_store_ent (PL_custom_op_descs, slf,
		2324	newSVpv ("coro schedule like function", 0), 0);
		2325	}
2055		2326
2056	coroapi.ver = CORO_API_VERSION;	2327	coroapi.ver = CORO_API_VERSION;
2057	coroapi.rev = CORO_API_REVISION;	2328	coroapi.rev = CORO_API_REVISION;
2058		2329
2059	coroapi.transfer = api_transfer;	2330	coroapi.transfer = api_transfer;
…		…
2107	RETVAL	2378	RETVAL
2108		2379
2109	void	2380	void
2110	_set_stacklevel (...)	2381	_set_stacklevel (...)
2111	CODE:	2382	CODE:
2112	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);	2383	CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2113		2384
2114	void	2385	void
2115	transfer (...)	2386	transfer (...)
		2387	PROTOTYPE: $$
2116	CODE:	2388	CODE:
2117	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2389	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2118		2390
2119	bool	2391	bool
2120	_destroy (SV *coro_sv)	2392	_destroy (SV *coro_sv)
2121	CODE:	2393	CODE:
2122	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2394	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2129	CODE:	2401	CODE:
2130	_exit (code);	2402	_exit (code);
2131		2403
2132	int	2404	int
2133	cctx_stacksize (int new_stacksize = 0)	2405	cctx_stacksize (int new_stacksize = 0)
		2406	PROTOTYPE: ;$
2134	CODE:	2407	CODE:
2135	RETVAL = cctx_stacksize;	2408	RETVAL = cctx_stacksize;
2136	if (new_stacksize)	2409	if (new_stacksize)
2137	{	2410	{
2138	cctx_stacksize = new_stacksize;	2411	cctx_stacksize = new_stacksize;
…		…
2141	OUTPUT:	2414	OUTPUT:
2142	RETVAL	2415	RETVAL
2143		2416
2144	int	2417	int
2145	cctx_max_idle (int max_idle = 0)	2418	cctx_max_idle (int max_idle = 0)
		2419	PROTOTYPE: ;$
2146	CODE:	2420	CODE:
2147	RETVAL = cctx_max_idle;	2421	RETVAL = cctx_max_idle;
2148	if (max_idle > 1)	2422	if (max_idle > 1)
2149	cctx_max_idle = max_idle;	2423	cctx_max_idle = max_idle;
2150	OUTPUT:	2424	OUTPUT:
2151	RETVAL	2425	RETVAL
2152		2426
2153	int	2427	int
2154	cctx_count ()	2428	cctx_count ()
		2429	PROTOTYPE:
2155	CODE:	2430	CODE:
2156	RETVAL = cctx_count;	2431	RETVAL = cctx_count;
2157	OUTPUT:	2432	OUTPUT:
2158	RETVAL	2433	RETVAL
2159		2434
2160	int	2435	int
2161	cctx_idle ()	2436	cctx_idle ()
		2437	PROTOTYPE:
2162	CODE:	2438	CODE:
2163	RETVAL = cctx_idle;	2439	RETVAL = cctx_idle;
2164	OUTPUT:	2440	OUTPUT:
2165	RETVAL	2441	RETVAL
2166		2442
2167	void	2443	void
2168	list ()	2444	list ()
		2445	PROTOTYPE:
2169	PPCODE:	2446	PPCODE:
2170	{	2447	{
2171	struct coro *coro;	2448	struct coro *coro;
2172	for (coro = coro_first; coro; coro = coro->next)	2449	for (coro = coro_first; coro; coro = coro->next)
2173	if (coro->hv)	2450	if (coro->hv)
…		…
2235		2512
2236	void	2513	void
2237	throw (Coro::State self, SV *throw = &PL_sv_undef)	2514	throw (Coro::State self, SV *throw = &PL_sv_undef)
2238	PROTOTYPE: $;$	2515	PROTOTYPE: $;$
2239	CODE:	2516	CODE:
		2517	{
		2518	struct coro *current = SvSTATE_current;
		2519	SV **throwp = self == current ? &coro_throw : &self->throw;
2240	SvREFCNT_dec (self->throw);	2520	SvREFCNT_dec (*throwp);
2241	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2521	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2522	}
2242		2523
2243	void	2524	void
2244	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2525	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2526	PROTOTYPE: $;$
2245	C_ARGS: aTHX_ coro, flags	2527	C_ARGS: aTHX_ coro, flags
2246		2528
2247	SV *	2529	SV *
2248	has_cctx (Coro::State coro)	2530	has_cctx (Coro::State coro)
2249	PROTOTYPE: $	2531	PROTOTYPE: $
…		…
2274	OUTPUT:	2556	OUTPUT:
2275	RETVAL	2557	RETVAL
2276		2558
2277	void	2559	void
2278	force_cctx ()	2560	force_cctx ()
		2561	PROTOTYPE:
2279	CODE:	2562	CODE:
2280	struct coro *coro = SvSTATE (coro_current);
2281	coro->cctx->idle_sp = 0;	2563	SvSTATE_current->cctx->idle_sp = 0;
2282		2564
2283	void	2565	void
2284	swap_defsv (Coro::State self)	2566	swap_defsv (Coro::State self)
2285	PROTOTYPE: $	2567	PROTOTYPE: $
2286	ALIAS:	2568	ALIAS:
…		…
2294	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2576	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2295		2577
2296	SV *tmp = *src; *src = *dst; *dst = tmp;	2578	SV *tmp = *src; *src = *dst; *dst = tmp;
2297	}	2579	}
2298		2580
		2581
2299	MODULE = Coro::State PACKAGE = Coro	2582	MODULE = Coro::State PACKAGE = Coro
2300		2583
2301	BOOT:	2584	BOOT:
2302	{	2585	{
2303	int i;	2586	int i;
…		…
2339	}	2622	}
2340		2623
2341	void	2624	void
2342	schedule (...)	2625	schedule (...)
2343	CODE:	2626	CODE:
2344	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items);	2627	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2345		2628
2346	void	2629	void
2347	cede (...)	2630	cede (...)
2348	CODE:	2631	CODE:
2349	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items);	2632	CORO_EXECUTE_SLF_XS (slf_init_cede);
2350		2633
2351	void	2634	void
2352	cede_notself (...)	2635	cede_notself (...)
2353	CODE:	2636	CODE:
2354	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items);	2637	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2355		2638
2356	void	2639	void
2357	_set_current (SV *current)	2640	_set_current (SV *current)
2358	PROTOTYPE: $	2641	PROTOTYPE: $
2359	CODE:	2642	CODE:
…		…
2362		2645
2363	void	2646	void
2364	_set_readyhook (SV *hook)	2647	_set_readyhook (SV *hook)
2365	PROTOTYPE: $	2648	PROTOTYPE: $
2366	CODE:	2649	CODE:
2367	LOCK;
2368	SvREFCNT_dec (coro_readyhook);	2650	SvREFCNT_dec (coro_readyhook);
2369	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2651	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370	UNLOCK;
2371		2652
2372	int	2653	int
2373	prio (Coro::State coro, int newprio = 0)	2654	prio (Coro::State coro, int newprio = 0)
		2655	PROTOTYPE: $;$
2374	ALIAS:	2656	ALIAS:
2375	nice = 1	2657	nice = 1
2376	CODE:	2658	CODE:
2377	{	2659	{
2378	RETVAL = coro->prio;	2660	RETVAL = coro->prio;
…		…
2410	# for async_pool speedup	2692	# for async_pool speedup
2411	void	2693	void
2412	_pool_1 (SV *cb)	2694	_pool_1 (SV *cb)
2413	CODE:	2695	CODE:
2414	{	2696	{
2415	struct coro *coro = SvSTATE (coro_current);
2416	HV *hv = (HV *)SvRV (coro_current);	2697	HV *hv = (HV *)SvRV (coro_current);
		2698	struct coro *coro = SvSTATE_hv ((SV *)hv);
2417	AV *defav = GvAV (PL_defgv);	2699	AV *defav = GvAV (PL_defgv);
2418	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2700	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419	AV *invoke_av;	2701	AV *invoke_av;
2420	int i, len;	2702	int i, len;
2421		2703
…		…
2442	{	2724	{
2443	av_fill (defav, len - 1);	2725	av_fill (defav, len - 1);
2444	for (i = 0; i < len; ++i)	2726	for (i = 0; i < len; ++i)
2445	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2727	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446	}	2728	}
2447
2448	SvREFCNT_dec (invoke);
2449	}	2729	}
2450		2730
2451	void	2731	void
2452	_pool_2 (SV *cb)	2732	_pool_2 (SV *cb)
2453	CODE:	2733	CODE:
2454	{	2734	{
2455	struct coro *coro = SvSTATE (coro_current);	2735	HV *hv = (HV *)SvRV (coro_current);
		2736	struct coro *coro = SvSTATE_hv ((SV *)hv);
2456		2737
2457	sv_setsv (cb, &PL_sv_undef);	2738	sv_setsv (cb, &PL_sv_undef);
2458		2739
2459	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2740	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460	coro->saved_deffh = 0;	2741	coro->saved_deffh = 0;
…		…
2467	SvREFCNT_dec (old);	2748	SvREFCNT_dec (old);
2468	croak ("\3async_pool terminate\2\n");	2749	croak ("\3async_pool terminate\2\n");
2469	}	2750	}
2470		2751
2471	av_clear (GvAV (PL_defgv));	2752	av_clear (GvAV (PL_defgv));
2472	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2753	hv_store (hv, "desc", sizeof ("desc") - 1,
2473	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2754	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2474		2755
2475	coro->prio = 0;	2756	coro->prio = 0;
2476		2757
2477	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2758	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2478	api_trace (aTHX_ coro_current, 0);	2759	api_trace (aTHX_ coro_current, 0);
2479		2760
2480	av_push (av_async_pool, newSVsv (coro_current));	2761	av_push (av_async_pool, newSVsv (coro_current));
2481	}	2762	}
2482		2763
2483	#if 0
2484		2764
2485	void	2765	MODULE = Coro::State PACKAGE = PerlIO::cede
2486	_generator_call (...)	2766
2487	PROTOTYPE: @	2767	BOOT:
2488	PPCODE:	2768	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2489	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);	2769
2490	xxxx	2770
2491	abort ();	2771	MODULE = Coro::State PACKAGE = Coro::Semaphore
2492		2772
2493	SV *	2773	SV *
2494	gensub (SV *sub, ...)	2774	new (SV *klass, SV *count_ = 0)
2495	PROTOTYPE: &;@	2775	CODE:
2496	CODE:
2497	{	2776	{
2498	struct coro *coro;	2777	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2499	MAGIC *mg;	2778	AV *av = newAV ();
2500	CV *xcv;	2779	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2501	CV *ncv = (CV *)newSV_type (SVt_PVCV);	2780	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2502	int i;
2503
2504	CvGV (ncv) = CvGV (cv);
2505	CvFILE (ncv) = CvFILE (cv);
2506
2507	Newz (0, coro, 1, struct coro);
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	}	2781	}
2526	OUTPUT:	2782	OUTPUT:
2527	RETVAL	2783	RETVAL
2528		2784
2529	#endif	2785	SV *
2530		2786	count (SV *self)
2531		2787	CODE:
2532	MODULE = Coro::State PACKAGE = Coro::AIO	2788	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2789	OUTPUT:
		2790	RETVAL
2533		2791
2534	void	2792	void
2535	_get_state (SV *self)	2793	up (SV *self, int adjust = 1)
2536	PPCODE:	2794	ALIAS:
2537	{	2795	adjust = 1
2538	AV *defav = GvAV (PL_defgv);	2796	CODE:
2539	AV *av = newAV ();	2797	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		2798
2563	void	2799	void
2564	_set_state (SV *state)	2800	down (SV *self)
2565	PROTOTYPE: $	2801	CODE:
2566	PPCODE:	2802	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		2803
		2804	void
		2805	try (SV *self)
		2806	PPCODE:
2567	{	2807	{
2568	AV *av = (AV *)SvRV (state);	2808	AV *av = (AV *)SvRV (self);
2569	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);	2809	SV *count_sv = AvARRAY (av)[0];
		2810	IV count = SvIVX (count_sv);
		2811
		2812	if (count > 0)
		2813	{
		2814	--count;
		2815	SvIVX (count_sv) = count;
		2816	XSRETURN_YES;
		2817	}
		2818	else
		2819	XSRETURN_NO;
		2820	}
		2821
		2822	void
		2823	waiters (SV *self)
		2824	CODE:
		2825	{
		2826	AV *av = (AV *)SvRV (self);
		2827
		2828	if (GIMME_V == G_SCALAR)
		2829	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2830	else
		2831	{
2570	int i;	2832	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));	2833	EXTEND (SP, AvFILLp (av) + 1 - 1);
2578	for (i = 0; i < AvFILLp (av); ++i)	2834	for (i = 1; i <= AvFILLp (av); ++i)
2579	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	2835	PUSHs (newSVsv (AvARRAY (av)[i]));
		2836	}
2580	}	2837	}
2581		2838
2582		2839
2583	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2840	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584		2841
2585	BOOT:	2842	BOOT:
2586	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2843	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587		2844
2588	SV *	2845	void
2589	_schedule (...)	2846	_schedule (...)
2590	PROTOTYPE: @
2591	CODE:	2847	CODE:
2592	{	2848	{
2593	static int incede;	2849	static int incede;
2594		2850
2595	api_cede_notself (aTHX);	2851	api_cede_notself (aTHX);
…		…
2609		2865
2610	--incede;	2866	--incede;
2611	}	2867	}
2612		2868
2613		2869
2614	MODULE = Coro::State PACKAGE = PerlIO::cede	2870	MODULE = Coro::State PACKAGE = Coro::AIO
2615		2871
2616	BOOT:	2872	void
2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2873	_register (char *target, char *proto, SV *req)
		2874	CODE:
		2875	{
		2876	HV *st;
		2877	GV *gvp;
		2878	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		2879	CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
		2880	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		2881	}
2618		2882

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