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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.263 by root, Wed Nov 12 04:49:06 2008 UTC vs.
Revision 1.301 by root, Wed Nov 19 02:41:31 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
…		…
116	# define CORO_PREFER_PERL_FUNCTIONS 0	119	# define CORO_PREFER_PERL_FUNCTIONS 0
117	#endif	120	#endif
118		121
119	/* The next macros try to return the current stack pointer, in an as	122	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	123	* portable way as possible. */
		124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
		126	# define STACKLEVEL __builtin_frame_address (0)
		127	#else
121	#define dSTACKLEVEL volatile char stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
122	#define STACKLEVEL ((void *)&stacklevel)	129	# define STACKLEVEL ((void *)&stacklevel)
		130	#endif
123		131
124	#define IN_DESTRUCT (PL_main_cv == Nullcv)	132	#define IN_DESTRUCT (PL_main_cv == Nullcv)
125		133
126	#if __GNUC__ >= 3	134	#if __GNUC__ >= 3
127	# define attribute(x) __attribute__(x)	135	# define attribute(x) __attribute__(x)
128	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
129	# define expect(expr,value) __builtin_expect ((expr),(value))	136	# define expect(expr,value) __builtin_expect ((expr),(value))
130	# define INLINE static inline	137	# define INLINE static inline
131	#else	138	#else
132	# define attribute(x)	139	# define attribute(x)
133	# define BARRIER
134	# define expect(expr,value) (expr)	140	# define expect(expr,value) (expr)
135	# define INLINE static	141	# define INLINE static
136	#endif	142	#endif
137		143
138	#define expect_false(expr) expect ((expr) != 0, 0)	144	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	145	#define expect_true(expr) expect ((expr) != 0, 1)
140		146
141	#define NOINLINE attribute ((noinline))	147	#define NOINLINE attribute ((noinline))
142		148
143	#include "CoroAPI.h"	149	#include "CoroAPI.h"
		150	#define GCoroAPI (&coroapi) /* very sneaky */
144		151
145	#ifdef USE_ITHREADS	152	#ifdef USE_ITHREADS
146
147	static perl_mutex coro_lock;
148	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
149	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
150	# if CORO_PTHREAD	153	# if CORO_PTHREAD
151	static void *coro_thx;	154	static void *coro_thx;
152	# endif	155	# endif
153
154	#else
155
156	# define LOCK (void)0
157	# define UNLOCK (void)0
158
159	#endif	156	#endif
160
161	# undef LOCK
162	# define LOCK (void)0
163	# undef UNLOCK
164	# define UNLOCK (void)0
165
166	/* helper storage struct for Coro::AIO */
167	struct io_state
168	{
169	AV *res;
170	int errorno;
171	I32 laststype; /* U16 in 5.10.0 */
172	int laststatval;
173	Stat_t statcache;
174	};
175		157
176	static double (*nvtime)(); /* so why doesn't it take void? */	158	static double (*nvtime)(); /* so why doesn't it take void? */
		159
		160	/* we hijack an hopefully unused CV flag for our purposes */
		161	#define CVf_SLF 0x4000
		162	static OP *pp_slf (pTHX);
177		163
178	static U32 cctx_gen;	164	static U32 cctx_gen;
179	static size_t cctx_stacksize = CORO_STACKSIZE;	165	static size_t cctx_stacksize = CORO_STACKSIZE;
180	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
181	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
182	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
183	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
184	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	170	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
185	static volatile struct coro *transfer_next;
186
187	struct transfer_args
188	{
189	struct coro *prev, *next;
190	};
191		171
192	static GV *irsgv; /* $/ */	172	static GV *irsgv; /* $/ */
193	static GV *stdoutgv; /* *STDOUT */	173	static GV *stdoutgv; /* *STDOUT */
194	static SV *rv_diehook;	174	static SV *rv_diehook;
195	static SV *rv_warnhook;	175	static SV *rv_warnhook;
…		…
214	CC_TRACE_LINE = 0x10, /* trace each statement */	194	CC_TRACE_LINE = 0x10, /* trace each statement */
215	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,	195	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
216	};	196	};
217		197
218	/* this is a structure representing a c-level coroutine */	198	/* this is a structure representing a c-level coroutine */
219	typedef struct coro_cctx {	199	typedef struct coro_cctx
		200	{
220	struct coro_cctx *next;	201	struct coro_cctx *next;
221		202
222	/* the stack */	203	/* the stack */
223	void *sptr;	204	void *sptr;
224	size_t ssize;	205	size_t ssize;
…		…
242	CF_NEW = 0x0004, /* has never been switched to */	223	CF_NEW = 0x0004, /* has never been switched to */
243	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
244	};	225	};
245		226
246	/* the structure where most of the perl state is stored, overlaid on the cxstack */	227	/* the structure where most of the perl state is stored, overlaid on the cxstack */
247	typedef struct {	228	typedef struct
		229	{
248	SV *defsv;	230	SV *defsv;
249	AV *defav;	231	AV *defav;
250	SV *errsv;	232	SV *errsv;
251	SV *irsgv;	233	SV *irsgv;
252	#define VAR(name,type) type name;	234	#define VAR(name,type) type name;
…		…
256		238
257	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	239	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
258		240
259	/* this is a structure representing a perl-level coroutine */	241	/* this is a structure representing a perl-level coroutine */
260	struct coro {	242	struct coro {
261	/* the c coroutine allocated to this perl coroutine, if any */	243	/* the C coroutine allocated to this perl coroutine, if any */
262	coro_cctx *cctx;	244	coro_cctx *cctx;
263		245
264	/* process data */	246	/* state data */
		247	struct CoroSLF slf_frame; /* saved slf frame */
265	AV *mainstack;	248	AV *mainstack;
266	perl_slots *slot; /* basically the saved sp */	249	perl_slots *slot; /* basically the saved sp */
267		250
268	AV *args; /* data associated with this coroutine (initial args) */	251	AV *args; /* data associated with this coroutine (initial args) */
269	int refcnt; /* coroutines are refcounted, yes */	252	int refcnt; /* coroutines are refcounted, yes */
270	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
271	HV *hv; /* the perl hash associated with this coro, if any */	254	HV *hv; /* the perl hash associated with this coro, if any */
		255	void (*on_destroy)(pTHX_ struct coro *coro);
272		256
273	/* statistics */	257	/* statistics */
274	int usecount; /* number of transfers to this coro */	258	int usecount; /* number of transfers to this coro */
275		259
276	/* coro process data */	260	/* coro process data */
277	int prio;	261	int prio;
278	SV *throw; /* exception to be thrown */	262	SV *except; /* exception to be thrown */
279		263
280	/* async_pool */	264	/* async_pool */
281	SV *saved_deffh;	265	SV *saved_deffh;
282		266
283	/* linked list */	267	/* linked list */
284	struct coro *next, *prev;	268	struct coro *next, *prev;
285	};	269	};
286		270
287	typedef struct coro *Coro__State;	271	typedef struct coro *Coro__State;
288	typedef struct coro *Coro__State_or_hashref;	272	typedef struct coro *Coro__State_or_hashref;
		273
		274	/* the following variables are effectively part of the perl context */
		275	/* and get copied between struct coro and these variables */
		276	/* the mainr easonw e don't support windows process emulation */
		277	static struct CoroSLF slf_frame; /* the current slf frame */
289		278
290	/** Coro ********************************************************************/	279	/** Coro ********************************************************************/
291		280
292	#define PRIO_MAX 3	281	#define PRIO_MAX 3
293	#define PRIO_HIGH 1	282	#define PRIO_HIGH 1
…		…
298		287
299	/* for Coro.pm */	288	/* for Coro.pm */
300	static SV *coro_current;	289	static SV *coro_current;
301	static SV *coro_readyhook;	290	static SV *coro_readyhook;
302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	291	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
303	static int coro_nready;
304	static struct coro *coro_first;	292	static struct coro *coro_first;
		293	#define coro_nready coroapi.nready
305		294
306	/** lowlevel stuff **********************************************************/	295	/** lowlevel stuff **********************************************************/
307		296
308	static SV *	297	static SV *
309	coro_get_sv (pTHX_ const char *name, int create)	298	coro_get_sv (pTHX_ const char *name, int create)
…		…
394	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	383	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
395		384
396	return 0;	385	return 0;
397	}	386	}
398		387
399	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	388	#define CORO_MAGIC_type_cv 26
400	#define CORO_MAGIC_type_state PERL_MAGIC_ext	389	#define CORO_MAGIC_type_state PERL_MAGIC_ext
401		390
402	static MGVTBL coro_cv_vtbl = {	391	static MGVTBL coro_cv_vtbl = {
403	0, 0, 0, 0,	392	0, 0, 0, 0,
404	coro_cv_free	393	coro_cv_free
405	};	394	};
406		395
		396	#define CORO_MAGIC_NN(sv, type) \
		397	(expect_true (SvMAGIC (sv)->mg_type == type) \
		398	? SvMAGIC (sv) \
		399	: mg_find (sv, type))
		400
407	#define CORO_MAGIC(sv, type) \	401	#define CORO_MAGIC(sv, type) \
408	SvMAGIC (sv) \	402	(expect_true (SvMAGIC (sv)) \
409	? SvMAGIC (sv)->mg_type == type \	403	? CORO_MAGIC_NN (sv, type) \
410	? SvMAGIC (sv) \
411	: mg_find (sv, type) \
412	: 0	404	: 0)
413		405
414	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	406	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
415	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	407	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
416		408
417	INLINE struct coro *	409	INLINE struct coro *
418	SvSTATE_ (pTHX_ SV *coro)	410	SvSTATE_ (pTHX_ SV *coro)
419	{	411	{
420	HV *stash;	412	HV *stash;
…		…
437	mg = CORO_MAGIC_state (coro);	429	mg = CORO_MAGIC_state (coro);
438	return (struct coro *)mg->mg_ptr;	430	return (struct coro *)mg->mg_ptr;
439	}	431	}
440		432
441	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	433	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		434
		435	/* faster than SvSTATE, but expects a coroutine hv */
		436	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		437	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442		438
443	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
444	static void	440	static void
445	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
446	{	442	{
…		…
513	CvPADLIST (cv) = (AV *)POPs;	509	CvPADLIST (cv) = (AV *)POPs;
514	}	510	}
515		511
516	PUTBACK;	512	PUTBACK;
517	}	513	}
		514
		515	slf_frame = c->slf_frame;
		516	CORO_THROW = c->except;
518	}	517	}
519		518
520	static void	519	static void
521	save_perl (pTHX_ Coro__State c)	520	save_perl (pTHX_ Coro__State c)
522	{	521	{
		522	c->except = CORO_THROW;
		523	c->slf_frame = slf_frame;
		524
523	{	525	{
524	dSP;	526	dSP;
525	I32 cxix = cxstack_ix;	527	I32 cxix = cxstack_ix;
526	PERL_CONTEXT *ccstk = cxstack;	528	PERL_CONTEXT *ccstk = cxstack;
527	PERL_SI *top_si = PL_curstackinfo;	529	PERL_SI *top_si = PL_curstackinfo;
…		…
594	#undef VAR	596	#undef VAR
595	}	597	}
596	}	598	}
597		599
598	/*	600	/*
599	* allocate various perl stacks. This is an exact copy	601	* allocate various perl stacks. This is almost an exact copy
600	* of perl.c:init_stacks, except that it uses less memory	602	* of perl.c:init_stacks, except that it uses less memory
601	* on the (sometimes correct) assumption that coroutines do	603	* on the (sometimes correct) assumption that coroutines do
602	* not usually need a lot of stackspace.	604	* not usually need a lot of stackspace.
603	*/	605	*/
604	#if CORO_PREFER_PERL_FUNCTIONS	606	#if CORO_PREFER_PERL_FUNCTIONS
…		…
725	#ifndef MgPV_nolen_const	727	#ifndef MgPV_nolen_const
726	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \	728	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
727	SvPV_nolen((SV*)((mg)->mg_ptr)) : \	729	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
728	(const char*)(mg)->mg_ptr)	730	(const char*)(mg)->mg_ptr)
729	#endif	731	#endif
730
731	/* we sometimes need to create the effect of entersub calling us */
732	#define ENTERSUB_HEAD ENTER; SAVETMPS
733	/* we somtimes need to create the effect of leaving via entersub */
734	#define ENTERSUB_TAIL LEAVE
735		732
736	/*	733	/*
737	* This overrides the default magic get method of %SIG elements.	734	* This overrides the default magic get method of %SIG elements.
738	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	735	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739	* and instead of tryign to save and restore the hash elements, we just provide	736	* and instead of tryign to save and restore the hash elements, we just provide
…		…
811		808
812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	809	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813	}	810	}
814		811
815	static void	812	static void
		813	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		814	{
		815	/* kind of mega-hacky, but works */
		816	ta->next = ta->prev = (struct coro *)ta;
		817	}
		818
		819	static int
		820	slf_check_nop (pTHX_ struct CoroSLF *frame)
		821	{
		822	return 0;
		823	}
		824
		825	static UNOP coro_setup_op;
		826
		827	static void NOINLINE /* noinline to keep it out of the transfer fast path */
816	coro_setup (pTHX_ struct coro *coro)	828	coro_setup (pTHX_ struct coro *coro)
817	{	829	{
818	/*	830	/*
819	* emulate part of the perl startup here.	831	* emulate part of the perl startup here.
820	*/	832	*/
…		…
847	{	859	{
848	dSP;	860	dSP;
849	UNOP myop;	861	UNOP myop;
850		862
851	Zero (&myop, 1, UNOP);	863	Zero (&myop, 1, UNOP);
852	myop.op_next = Nullop;	864	myop.op_next = Nullop;
853	myop.op_flags = OPf_WANT_VOID;	865	myop.op_flags = OPf_WANT_VOID;
854		866
855	PUSHMARK (SP);	867	PUSHMARK (SP);
856	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
857	PUTBACK;	869	PUTBACK;
…		…
859	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
860	SPAGAIN;	872	SPAGAIN;
861	}	873	}
862		874
863	/* this newly created coroutine might be run on an existing cctx which most	875	/* this newly created coroutine might be run on an existing cctx which most
864	* likely was suspended in set_stacklevel, called from entersub.	876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
865	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
866	* so we ENTER here for symmetry.
867	*/	877	*/
868	ENTERSUB_HEAD;	878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		880
		881	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		882	coro_setup_op.op_next = PL_op;
		883	coro_setup_op.op_type = OP_CUSTOM;
		884	coro_setup_op.op_ppaddr = pp_slf;
		885	/* no flags required, as an init function won't be called */
		886
		887	PL_op = (OP *)&coro_setup_op;
		888
		889	/* copy throw, in case it was set before coro_setup */
		890	CORO_THROW = coro->except;
869	}	891	}
870		892
871	static void	893	static void
872	coro_destruct (pTHX_ struct coro *coro)	894	coro_destruct (pTHX_ struct coro *coro)
873	{	895	{
…		…
897		919
898	SvREFCNT_dec (PL_diehook);	920	SvREFCNT_dec (PL_diehook);
899	SvREFCNT_dec (PL_warnhook);	921	SvREFCNT_dec (PL_warnhook);
900		922
901	SvREFCNT_dec (coro->saved_deffh);	923	SvREFCNT_dec (coro->saved_deffh);
902	SvREFCNT_dec (coro->throw);	924	SvREFCNT_dec (CORO_THROW);
903		925
904	coro_destruct_stacks (aTHX);	926	coro_destruct_stacks (aTHX);
905	}	927	}
906		928
907	INLINE void	929	INLINE void
…		…
917	static int	939	static int
918	runops_trace (pTHX)	940	runops_trace (pTHX)
919	{	941	{
920	COP *oldcop = 0;	942	COP *oldcop = 0;
921	int oldcxix = -2;	943	int oldcxix = -2;
922	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */	944	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
923	coro_cctx *cctx = coro->cctx;	945	coro_cctx *cctx = coro->cctx;
924		946
925	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	947	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
926	{	948	{
927	PERL_ASYNC_CHECK ();	949	PERL_ASYNC_CHECK ();
…		…
1036		1058
1037	TAINT_NOT;	1059	TAINT_NOT;
1038	return 0;	1060	return 0;
1039	}	1061	}
1040		1062
		1063	static struct coro_cctx *cctx_ssl_cctx;
		1064	static struct CoroSLF cctx_ssl_frame;
		1065
1041	static void	1066	static void
1042	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)	1067	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1043	{	1068	{
1044	ta->prev = (struct coro *)cctx;	1069	ta->prev = (struct coro *)cctx_ssl_cctx;
1045	ta->next = 0;	1070	ta->next = 0;
1046	}	1071	}
1047		1072
1048	/* inject a fake call to Coro::State::_cctx_init into the execution */	1073	static int
1049	/* _cctx_init should be careful, as it could be called at almost any time */	1074	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1050	/* during execution of a perl program */	1075	{
1051	/* also initialises PL_top_env */	1076	*frame = cctx_ssl_frame;
		1077
		1078	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1079	}
		1080
		1081	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1052	static void NOINLINE	1082	static void NOINLINE
1053	cctx_prepare (pTHX_ coro_cctx *cctx)	1083	cctx_prepare (pTHX_ coro_cctx *cctx)
1054	{	1084	{
1055	dSP;
1056	UNOP myop;
1057
1058	PL_top_env = &PL_start_env;	1085	PL_top_env = &PL_start_env;
1059		1086
1060	if (cctx->flags & CC_TRACE)	1087	if (cctx->flags & CC_TRACE)
1061	PL_runops = runops_trace;	1088	PL_runops = runops_trace;
1062		1089
1063	Zero (&myop, 1, UNOP);	1090	/* we already must be executing an SLF op, there is no other valid way
1064	myop.op_next = PL_op;	1091	* that can lead to creation of a new cctx */
1065	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1092	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1093	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1066		1094
1067	PUSHMARK (SP);	1095	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1068	EXTEND (SP, 2);	1096	cctx_ssl_cctx = cctx;
1069	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1097	cctx_ssl_frame = slf_frame;
1070	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1098
1071	PUTBACK;	1099	slf_frame.prepare = slf_prepare_set_stacklevel;
1072	PL_op = (OP *)&myop;	1100	slf_frame.check = slf_check_set_stacklevel;
1073	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1074	SPAGAIN;
1075	}	1101	}
1076		1102
1077	/* the tail of transfer: execute stuff we can only do after a transfer */	1103	/* the tail of transfer: execute stuff we can only do after a transfer */
1078	INLINE void	1104	INLINE void
1079	transfer_tail (pTHX)	1105	transfer_tail (pTHX)
1080	{	1106	{
1081	struct coro *next = (struct coro *)transfer_next;
1082	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1083	assert (("FATAL: transfer_next was zero in transfer_tail (please report)", next));
1084
1085	free_coro_mortal (aTHX);	1107	free_coro_mortal (aTHX);
1086	UNLOCK;
1087
1088	if (expect_false (next->throw))
1089	{
1090	SV *exception = sv_2mortal (next->throw);
1091
1092	next->throw = 0;
1093	sv_setsv (ERRSV, exception);
1094	croak (0);
1095	}
1096	}	1108	}
1097		1109
1098	/*	1110	/*
1099	* this is a _very_ stripped down perl interpreter ;)	1111	* this is a _very_ stripped down perl interpreter ;)
1100	*/	1112	*/
…		…
1107	# endif	1119	# endif
1108	#endif	1120	#endif
1109	{	1121	{
1110	dTHX;	1122	dTHX;
1111		1123
1112	/* entersub called ENTER, but we never 'returned', undo that here */	1124	/* normally we would need to skip the entersub here */
1113	ENTERSUB_TAIL;	1125	/* not doing so will re-execute it, which is exactly what we want */
1114
1115	/* we now skip the entersub that did lead to transfer() */
1116	PL_op = PL_op->op_next;	1126	/* PL_nop = PL_nop->op_next */
1117		1127
1118	/* inject a fake subroutine call to cctx_init */	1128	/* inject a fake subroutine call to cctx_init */
1119	cctx_prepare (aTHX_ (coro_cctx *)arg);	1129	cctx_prepare (aTHX_ (coro_cctx *)arg);
1120		1130
1121	/* cctx_run is the alternative tail of transfer() */	1131	/* cctx_run is the alternative tail of transfer() */
…		…
1192	cctx->ssize = cctx_stacksize * (long)sizeof (long);	1202	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1193	New (0, cctx->sptr, cctx_stacksize, long);	1203	New (0, cctx->sptr, cctx_stacksize, long);
1194		1204
1195	if (!cctx->sptr)	1205	if (!cctx->sptr)
1196	{	1206	{
1197	perror ("FATAL: unable to allocate stack for coroutine");	1207	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1198	_exit (EXIT_FAILURE);	1208	_exit (EXIT_FAILURE);
1199	}	1209	}
1200		1210
1201	stack_start = cctx->sptr;	1211	stack_start = cctx->sptr;
1202	stack_size = cctx->ssize;	1212	stack_size = cctx->ssize;
…		…
1282	/** coroutine switching *****************************************************/	1292	/** coroutine switching *****************************************************/
1283		1293
1284	static void	1294	static void
1285	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1295	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1286	{	1296	{
		1297	/* TODO: throwing up here is considered harmful */
		1298
1287	if (expect_true (prev != next))	1299	if (expect_true (prev != next))
1288	{	1300	{
1289	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1301	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1290	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1302	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1291		1303
1292	if (expect_false (next->flags & CF_RUNNING))	1304	if (expect_false (next->flags & CF_RUNNING))
1293	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1305	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1294		1306
1295	if (expect_false (next->flags & CF_DESTROYED))	1307	if (expect_false (next->flags & CF_DESTROYED))
1296	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1308	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1297		1309
1298	#if !PERL_VERSION_ATLEAST (5,10,0)	1310	#if !PERL_VERSION_ATLEAST (5,10,0)
1299	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1311	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1300	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1312	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1301	#endif	1313	#endif
1302	}	1314	}
1303	}	1315	}
1304		1316
1305	/* always use the TRANSFER macro */	1317	/* always use the TRANSFER macro */
1306	static void NOINLINE	1318	static void NOINLINE /* noinline so we have a fixed stackframe */
1307	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1319	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1308	{	1320	{
1309	dSTACKLEVEL;	1321	dSTACKLEVEL;
1310		1322
1311	/* sometimes transfer is only called to set idle_sp */	1323	/* sometimes transfer is only called to set idle_sp */
…		…
1326	prev->flags |= CF_RUNNING;	1338	prev->flags |= CF_RUNNING;
1327	}	1339	}
1328		1340
1329	prev->flags &= ~CF_RUNNING;	1341	prev->flags &= ~CF_RUNNING;
1330	next->flags |= CF_RUNNING;	1342	next->flags |= CF_RUNNING;
1331
1332	LOCK;
1333		1343
1334	/* first get rid of the old state */	1344	/* first get rid of the old state */
1335	save_perl (aTHX_ prev);	1345	save_perl (aTHX_ prev);
1336		1346
1337	if (expect_false (next->flags & CF_NEW))	1347	if (expect_false (next->flags & CF_NEW))
…		…
1351	prev__cctx->idle_sp == STACKLEVEL	1361	prev__cctx->idle_sp == STACKLEVEL
1352	&& !(prev__cctx->flags & CC_TRACE)	1362	&& !(prev__cctx->flags & CC_TRACE)
1353	&& !force_cctx	1363	&& !force_cctx
1354	))	1364	))
1355	{	1365	{
1356	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1366	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1357	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1367	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1358		1368
1359	prev->cctx = 0;	1369	prev->cctx = 0;
1360		1370
1361	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1371	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
…		…
1369		1379
1370	++next->usecount;	1380	++next->usecount;
1371		1381
1372	if (expect_true (!next->cctx))	1382	if (expect_true (!next->cctx))
1373	next->cctx = cctx_get (aTHX);	1383	next->cctx = cctx_get (aTHX);
1374
1375	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1376	transfer_next = next;
1377		1384
1378	if (expect_false (prev__cctx != next->cctx))	1385	if (expect_false (prev__cctx != next->cctx))
1379	{	1386	{
1380	prev__cctx->top_env = PL_top_env;	1387	prev__cctx->top_env = PL_top_env;
1381	PL_top_env = next->cctx->top_env;	1388	PL_top_env = next->cctx->top_env;
…		…
1395	coro_state_destroy (pTHX_ struct coro *coro)	1402	coro_state_destroy (pTHX_ struct coro *coro)
1396	{	1403	{
1397	if (coro->flags & CF_DESTROYED)	1404	if (coro->flags & CF_DESTROYED)
1398	return 0;	1405	return 0;
1399		1406
		1407	if (coro->on_destroy)
		1408	coro->on_destroy (aTHX_ coro);
		1409
1400	coro->flags |= CF_DESTROYED;	1410	coro->flags |= CF_DESTROYED;
1401		1411
1402	if (coro->flags & CF_READY)	1412	if (coro->flags & CF_READY)
1403	{	1413	{
1404	/* reduce nready, as destroying a ready coro effectively unreadies it */	1414	/* reduce nready, as destroying a ready coro effectively unreadies it */
1405	/* alternative: look through all ready queues and remove the coro */	1415	/* alternative: look through all ready queues and remove the coro */
1406	LOCK;
1407	--coro_nready;	1416	--coro_nready;
1408	UNLOCK;
1409	}	1417	}
1410	else	1418	else
1411	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1419	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1412		1420
1413	if (coro->mainstack && coro->mainstack != main_mainstack)	1421	if (coro->mainstack && coro->mainstack != main_mainstack)
1414	{	1422	{
1415	struct coro temp;	1423	struct coro temp;
1416		1424
1417	if (coro->flags & CF_RUNNING)	1425	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418	croak ("FATAL: tried to destroy currently running coroutine");
1419		1426
1420	save_perl (aTHX_ &temp);	1427	save_perl (aTHX_ &temp);
1421	load_perl (aTHX_ coro);	1428	load_perl (aTHX_ coro);
1422		1429
1423	coro_destruct (aTHX_ coro);	1430	coro_destruct (aTHX_ coro);
…		…
1474	# define MGf_DUP 0	1481	# define MGf_DUP 0
1475	#endif	1482	#endif
1476	};	1483	};
1477		1484
1478	static void	1485	static void
1479	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1486	prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1480	{	1487	{
1481	ta->prev = SvSTATE (prev_sv);	1488	ta->prev = SvSTATE (prev_sv);
1482	ta->next = SvSTATE (next_sv);	1489	ta->next = SvSTATE (next_sv);
1483	TRANSFER_CHECK (*ta);	1490	TRANSFER_CHECK (*ta);
1484	}	1491	}
1485		1492
1486	static void	1493	static void
1487	api_transfer (SV *prev_sv, SV *next_sv)	1494	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1488	{	1495	{
1489	dTHX;
1490	struct transfer_args ta;	1496	struct coro_transfer_args ta;
1491		1497
1492	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1498	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1493	TRANSFER (ta, 1);	1499	TRANSFER (ta, 1);
1494	}	1500	}
1495		1501
1496	/** Coro ********************************************************************/	1502	/** Coro ********************************************************************/
1497		1503
1498	static void	1504	INLINE void
1499	coro_enq (pTHX_ SV *coro_sv)	1505	coro_enq (pTHX_ struct coro *coro)
1500	{	1506	{
1501	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1507	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1502	}	1508	}
1503		1509
1504	static SV *	1510	INLINE SV *
1505	coro_deq (pTHX)	1511	coro_deq (pTHX)
1506	{	1512	{
1507	int prio;	1513	int prio;
1508		1514
1509	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1515	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1512		1518
1513	return 0;	1519	return 0;
1514	}	1520	}
1515		1521
1516	static int	1522	static int
1517	api_ready (SV *coro_sv)	1523	api_ready (pTHX_ SV *coro_sv)
1518	{	1524	{
1519	dTHX;
1520	struct coro *coro;	1525	struct coro *coro;
1521	SV *sv_hook;	1526	SV *sv_hook;
1522	void (*xs_hook)(void);	1527	void (*xs_hook)(void);
1523		1528
1524	if (SvROK (coro_sv))	1529	if (SvROK (coro_sv))
…		…
1529	if (coro->flags & CF_READY)	1534	if (coro->flags & CF_READY)
1530	return 0;	1535	return 0;
1531		1536
1532	coro->flags |= CF_READY;	1537	coro->flags |= CF_READY;
1533		1538
1534	LOCK;
1535
1536	sv_hook = coro_nready ? 0 : coro_readyhook;	1539	sv_hook = coro_nready ? 0 : coro_readyhook;
1537	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1540	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1538		1541
1539	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1542	coro_enq (aTHX_ coro);
1540	++coro_nready;	1543	++coro_nready;
1541		1544
1542	UNLOCK;
1543
1544	if (sv_hook)	1545	if (sv_hook)
1545	{	1546	{
1546	dSP;	1547	dSP;
1547		1548
1548	ENTER;	1549	ENTER;
1549	SAVETMPS;	1550	SAVETMPS;
1550		1551
1551	PUSHMARK (SP);	1552	PUSHMARK (SP);
1552	PUTBACK;	1553	PUTBACK;
1553	call_sv (sv_hook, G_DISCARD);	1554	call_sv (sv_hook, G_VOID | G_DISCARD);
1554	SPAGAIN;
1555		1555
1556	FREETMPS;	1556	FREETMPS;
1557	LEAVE;	1557	LEAVE;
1558	}	1558	}
1559		1559
…		…
1562		1562
1563	return 1;	1563	return 1;
1564	}	1564	}
1565		1565
1566	static int	1566	static int
1567	api_is_ready (SV *coro_sv)	1567	api_is_ready (pTHX_ SV *coro_sv)
1568	{	1568	{
1569	dTHX;
1570
1571	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1569	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1572	}	1570	}
1573		1571
1574	INLINE void	1572	INLINE void
1575	prepare_schedule (pTHX_ struct transfer_args *ta)	1573	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1576	{	1574	{
1577	SV *prev_sv, *next_sv;	1575	SV *prev_sv, *next_sv;
1578		1576
1579	for (;;)	1577	for (;;)
1580	{	1578	{
1581	LOCK;
1582	next_sv = coro_deq (aTHX);	1579	next_sv = coro_deq (aTHX);
1583		1580
1584	/* nothing to schedule: call the idle handler */	1581	/* nothing to schedule: call the idle handler */
1585	if (expect_false (!next_sv))	1582	if (expect_false (!next_sv))
1586	{	1583	{
1587	dSP;	1584	dSP;
1588	UNLOCK;
1589		1585
1590	ENTER;	1586	ENTER;
1591	SAVETMPS;	1587	SAVETMPS;
1592		1588
1593	PUSHMARK (SP);	1589	PUSHMARK (SP);
1594	PUTBACK;	1590	PUTBACK;
1595	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1591	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1596	SPAGAIN;
1597		1592
1598	FREETMPS;	1593	FREETMPS;
1599	LEAVE;	1594	LEAVE;
1600	continue;	1595	continue;
1601	}	1596	}
1602		1597
1603	ta->next = SvSTATE (next_sv);	1598	ta->next = SvSTATE_hv (next_sv);
1604		1599
1605	/* cannot transfer to destroyed coros, skip and look for next */	1600	/* cannot transfer to destroyed coros, skip and look for next */
1606	if (expect_false (ta->next->flags & CF_DESTROYED))	1601	if (expect_false (ta->next->flags & CF_DESTROYED))
1607	{	1602	{
1608	UNLOCK;
1609	SvREFCNT_dec (next_sv);	1603	SvREFCNT_dec (next_sv);
1610	/* coro_nready has already been taken care of by destroy */	1604	/* coro_nready has already been taken care of by destroy */
1611	continue;	1605	continue;
1612	}	1606	}
1613		1607
1614	--coro_nready;	1608	--coro_nready;
1615	UNLOCK;
1616	break;	1609	break;
1617	}	1610	}
1618		1611
1619	/* free this only after the transfer */	1612	/* free this only after the transfer */
1620	prev_sv = SvRV (coro_current);	1613	prev_sv = SvRV (coro_current);
1621	ta->prev = SvSTATE (prev_sv);	1614	ta->prev = SvSTATE_hv (prev_sv);
1622	TRANSFER_CHECK (*ta);	1615	TRANSFER_CHECK (*ta);
1623	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1616	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1624	ta->next->flags &= ~CF_READY;	1617	ta->next->flags &= ~CF_READY;
1625	SvRV_set (coro_current, next_sv);	1618	SvRV_set (coro_current, next_sv);
1626		1619
1627	LOCK;
1628	free_coro_mortal (aTHX);	1620	free_coro_mortal (aTHX);
1629	coro_mortal = prev_sv;	1621	coro_mortal = prev_sv;
1630	UNLOCK;
1631	}	1622	}
1632		1623
1633	INLINE void	1624	INLINE void
1634	prepare_cede (pTHX_ struct transfer_args *ta)	1625	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1635	{	1626	{
1636	api_ready (coro_current);	1627	api_ready (aTHX_ coro_current);
1637	prepare_schedule (aTHX_ ta);	1628	prepare_schedule (aTHX_ ta);
1638	}	1629	}
1639		1630
		1631	INLINE void
		1632	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
		1633	{
		1634	SV *prev = SvRV (coro_current);
		1635
		1636	if (coro_nready)
		1637	{
		1638	prepare_schedule (aTHX_ ta);
		1639	api_ready (aTHX_ prev);
		1640	}
		1641	else
		1642	prepare_nop (aTHX_ ta);
		1643	}
		1644
		1645	static void
		1646	api_schedule (pTHX)
		1647	{
		1648	struct coro_transfer_args ta;
		1649
		1650	prepare_schedule (aTHX_ &ta);
		1651	TRANSFER (ta, 1);
		1652	}
		1653
1640	static int	1654	static int
1641	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1655	api_cede (pTHX)
1642	{	1656	{
1643	if (coro_nready)	1657	struct coro_transfer_args ta;
1644	{	1658
1645	SV *prev = SvRV (coro_current);
1646	prepare_schedule (aTHX_ ta);	1659	prepare_cede (aTHX_ &ta);
1647	api_ready (prev);	1660
		1661	if (expect_true (ta.prev != ta.next))
		1662	{
		1663	TRANSFER (ta, 1);
1648	return 1;	1664	return 1;
1649	}	1665	}
1650	else	1666	else
1651	return 0;	1667	return 0;
1652	}	1668	}
1653		1669
1654	static void
1655	api_schedule (void)
1656	{
1657	dTHX;
1658	struct transfer_args ta;
1659
1660	prepare_schedule (aTHX_ &ta);
1661	TRANSFER (ta, 1);
1662	}
1663
1664	static int	1670	static int
1665	api_cede (void)	1671	api_cede_notself (pTHX)
1666	{	1672	{
1667	dTHX;	1673	if (coro_nready)
		1674	{
1668	struct transfer_args ta;	1675	struct coro_transfer_args ta;
1669		1676
1670	prepare_cede (aTHX_ &ta);	1677	prepare_cede_notself (aTHX_ &ta);
1671
1672	if (expect_true (ta.prev != ta.next))
1673	{
1674	TRANSFER (ta, 1);	1678	TRANSFER (ta, 1);
1675	return 1;	1679	return 1;
1676	}	1680	}
1677	else	1681	else
1678	return 0;	1682	return 0;
1679	}	1683	}
1680		1684
1681	static int	1685	static void
1682	api_cede_notself (void)
1683	{
1684	dTHX;
1685	struct transfer_args ta;
1686
1687	if (prepare_cede_notself (aTHX_ &ta))
1688	{
1689	TRANSFER (ta, 1);
1690	return 1;
1691	}
1692	else
1693	return 0;
1694	}
1695
1696	static void
1697	api_trace (SV *coro_sv, int flags)	1686	api_trace (pTHX_ SV *coro_sv, int flags)
1698	{	1687	{
1699	dTHX;
1700	struct coro *coro = SvSTATE (coro_sv);	1688	struct coro *coro = SvSTATE (coro_sv);
1701		1689
1702	if (flags & CC_TRACE)	1690	if (flags & CC_TRACE)
1703	{	1691	{
1704	if (!coro->cctx)	1692	if (!coro->cctx)
1705	coro->cctx = cctx_new_run ();	1693	coro->cctx = cctx_new_run ();
1706	else if (!(coro->cctx->flags & CC_TRACE))	1694	else if (!(coro->cctx->flags & CC_TRACE))
1707	croak ("cannot enable tracing on coroutine with custom stack");	1695	croak ("cannot enable tracing on coroutine with custom stack,");
1708		1696
1709	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1697	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1710	}	1698	}
1711	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1699	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1712	{	1700	{
…		…
1717	else	1705	else
1718	coro->slot->runops = RUNOPS_DEFAULT;	1706	coro->slot->runops = RUNOPS_DEFAULT;
1719	}	1707	}
1720	}	1708	}
1721		1709
1722	#if 0	1710	/*****************************************************************************/
		1711	/* schedule-like-function opcode (SLF) */
		1712
		1713	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1714	static const CV *slf_cv;
		1715	static SV **slf_argv;
		1716	static int slf_argc, slf_arga; /* count, allocated */
		1717	static I32 slf_ax; /* top of stack, for restore */
		1718
		1719	/* this restores the stack in the case we patched the entersub, to */
		1720	/* recreate the stack frame as perl will on following calls */
		1721	/* since entersub cleared the stack */
		1722	static OP *
		1723	pp_restore (pTHX)
		1724	{
		1725	int i;
		1726	SV **SP = PL_stack_base + slf_ax;
		1727
		1728	PUSHMARK (SP);
		1729
		1730	EXTEND (SP, slf_argc + 1);
		1731
		1732	for (i = 0; i < slf_argc; ++i)
		1733	PUSHs (sv_2mortal (slf_argv [i]));
		1734
		1735	PUSHs ((SV *)CvGV (slf_cv));
		1736
		1737	RETURNOP (slf_restore.op_first);
		1738	}
		1739
1723	static int	1740	static void
1724	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1741	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1725	{	1742	{
1726	AV *padlist;	1743	SV **arg = (SV **)slf_frame.data;
1727	AV *av = (AV *)mg->mg_obj;
1728		1744
1729	abort ();	1745	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1730
1731	return 0;
1732	}	1746	}
1733		1747
1734	static MGVTBL coro_gensub_vtbl = {	1748	static void
1735	0, 0, 0, 0,	1749	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1736	coro_gensub_free	1750	{
1737	};	1751	if (items != 2)
1738	#endif	1752	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1753
		1754	frame->prepare = slf_prepare_transfer;
		1755	frame->check = slf_check_nop;
		1756	frame->data = (void *)arg; /* let's hope it will stay valid */
		1757	}
		1758
		1759	static void
		1760	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1761	{
		1762	frame->prepare = prepare_schedule;
		1763	frame->check = slf_check_nop;
		1764	}
		1765
		1766	static void
		1767	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1768	{
		1769	frame->prepare = prepare_cede;
		1770	frame->check = slf_check_nop;
		1771	}
		1772
		1773	static void
		1774	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1775	{
		1776	frame->prepare = prepare_cede_notself;
		1777	frame->check = slf_check_nop;
		1778	}
		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	/* exception handling */
		1845	if (expect_false (CORO_THROW))
		1846	{
		1847	SV *exception = sv_2mortal (CORO_THROW);
		1848
		1849	CORO_THROW = 0;
		1850	sv_setsv (ERRSV, exception);
		1851	croak (0);
		1852	}
		1853
		1854	/* return value handling - mostly like entersub */
		1855	/* make sure we put something on the stack in scalar context */
		1856	if (GIMME_V == G_SCALAR)
		1857	{
		1858	dSP;
		1859	SV **bot = PL_stack_base + checkmark;
		1860
		1861	if (sp == bot) /* too few, push undef */
		1862	bot [1] = &PL_sv_undef;
		1863	else if (sp != bot + 1) /* too many, take last one */
		1864	bot [1] = *sp;
		1865
		1866	SP = bot + 1;
		1867
		1868	PUTBACK;
		1869	}
		1870
		1871	return NORMAL;
		1872	}
		1873
		1874	static void
		1875	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		1876	{
		1877	int i;
		1878	SV **arg = PL_stack_base + ax;
		1879	int items = PL_stack_sp - arg + 1;
		1880
		1881	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1882
		1883	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1884	&& PL_op->op_ppaddr != pp_slf)
		1885	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1886
		1887	CvFLAGS (cv) |= CVf_SLF;
		1888	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		1889	slf_cv = cv;
		1890
		1891	/* we patch the op, and then re-run the whole call */
		1892	/* we have to put the same argument on the stack for this to work */
		1893	/* and this will be done by pp_restore */
		1894	slf_restore.op_next = (OP *)&slf_restore;
		1895	slf_restore.op_type = OP_CUSTOM;
		1896	slf_restore.op_ppaddr = pp_restore;
		1897	slf_restore.op_first = PL_op;
		1898
		1899	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		1900
		1901	if (PL_op->op_flags & OPf_STACKED)
		1902	{
		1903	if (items > slf_arga)
		1904	{
		1905	slf_arga = items;
		1906	free (slf_argv);
		1907	slf_argv = malloc (slf_arga * sizeof (SV *));
		1908	}
		1909
		1910	slf_argc = items;
		1911
		1912	for (i = 0; i < items; ++i)
		1913	slf_argv [i] = SvREFCNT_inc (arg [i]);
		1914	}
		1915	else
		1916	slf_argc = 0;
		1917
		1918	PL_op->op_ppaddr = pp_slf;
		1919	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		1920
		1921	PL_op = (OP *)&slf_restore;
		1922	}
1739		1923
1740	/*****************************************************************************/	1924	/*****************************************************************************/
1741	/* PerlIO::cede */	1925	/* PerlIO::cede */
1742		1926
1743	typedef struct	1927	typedef struct
…		…
1771	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1955	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1772	double now = nvtime ();	1956	double now = nvtime ();
1773		1957
1774	if (now >= self->next)	1958	if (now >= self->next)
1775	{	1959	{
1776	api_cede ();	1960	api_cede (aTHX);
1777	self->next = now + self->every;	1961	self->next = now + self->every;
1778	}	1962	}
1779		1963
1780	return PerlIOBuf_flush (aTHX_ f);	1964	return PerlIOBuf_flush (aTHX_ f);
1781	}	1965	}
…		…
1810	PerlIOBuf_get_ptr,	1994	PerlIOBuf_get_ptr,
1811	PerlIOBuf_get_cnt,	1995	PerlIOBuf_get_cnt,
1812	PerlIOBuf_set_ptrcnt,	1996	PerlIOBuf_set_ptrcnt,
1813	};	1997	};
1814		1998
		1999	/*****************************************************************************/
		2000	/* Coro::Semaphore & Coro::Signal */
		2001
		2002	static SV *
		2003	coro_waitarray_new (pTHX_ int count)
		2004	{
		2005	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2006	AV *av = newAV ();
		2007	SV **ary;
		2008
		2009	/* unfortunately, building manually saves memory */
		2010	Newx (ary, 2, SV *);
		2011	AvALLOC (av) = ary;
		2012	AvARRAY (av) = ary;
		2013	AvMAX (av) = 1;
		2014	AvFILLp (av) = 0;
		2015	ary [0] = newSViv (count);
		2016
		2017	return newRV_noinc ((SV *)av);
		2018	}
		2019
		2020	/* semaphore */
		2021
		2022	static void
		2023	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2024	{
		2025	SV *count_sv = AvARRAY (av)[0];
		2026	IV count = SvIVX (count_sv);
		2027
		2028	count += adjust;
		2029	SvIVX (count_sv) = count;
		2030
		2031	/* now wake up as many waiters as are expected to lock */
		2032	while (count > 0 && AvFILLp (av) > 0)
		2033	{
		2034	SV *cb;
		2035
		2036	/* swap first two elements so we can shift a waiter */
		2037	AvARRAY (av)[0] = AvARRAY (av)[1];
		2038	AvARRAY (av)[1] = count_sv;
		2039	cb = av_shift (av);
		2040
		2041	if (SvOBJECT (cb))
		2042	api_ready (aTHX_ cb);
		2043	else
		2044	croak ("callbacks not yet supported");
		2045
		2046	SvREFCNT_dec (cb);
		2047
		2048	--count;
		2049	}
		2050	}
		2051
		2052	static void
		2053	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2054	{
		2055	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2056	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2057	}
		2058
		2059	static int
		2060	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
		2061	{
		2062	AV *av = (AV *)frame->data;
		2063	SV *count_sv = AvARRAY (av)[0];
		2064
		2065	/* if we are about to throw, don't actually acquire the lock, just throw */
		2066	if (CORO_THROW)
		2067	return 0;
		2068	else if (SvIVX (count_sv) > 0)
		2069	{
		2070	SvSTATE_current->on_destroy = 0;
		2071
		2072	if (acquire)
		2073	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2074	else
		2075	coro_semaphore_adjust (aTHX_ av, 0);
		2076
		2077	return 0;
		2078	}
		2079	else
		2080	{
		2081	int i;
		2082	/* if we were woken up but can't down, we look through the whole */
		2083	/* waiters list and only add us if we aren't in there already */
		2084	/* this avoids some degenerate memory usage cases */
		2085
		2086	for (i = 1; i <= AvFILLp (av); ++i)
		2087	if (AvARRAY (av)[i] == SvRV (coro_current))
		2088	return 1;
		2089
		2090	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2091	return 1;
		2092	}
		2093	}
		2094
		2095	static int
		2096	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2097	{
		2098	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2099	}
		2100
		2101	static int
		2102	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2103	{
		2104	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2105	}
		2106
		2107	static void
		2108	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2109	{
		2110	AV *av = (AV *)SvRV (arg [0]);
		2111
		2112	if (SvIVX (AvARRAY (av)[0]) > 0)
		2113	{
		2114	frame->data = (void *)av;
		2115	frame->prepare = prepare_nop;
		2116	}
		2117	else
		2118	{
		2119	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2120
		2121	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
		2122	frame->prepare = prepare_schedule;
		2123
		2124	/* to avoid race conditions when a woken-up coro gets terminated */
		2125	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2126	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2127	}
		2128	}
		2129
		2130	static void
		2131	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2132	{
		2133	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2134	frame->check = slf_check_semaphore_down;
		2135	}
		2136
		2137	static void
		2138	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2139	{
		2140	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2141	frame->check = slf_check_semaphore_wait;
		2142	}
		2143
		2144	/* signal */
		2145
		2146	static void
		2147	coro_signal_wake (pTHX_ AV *av, int count)
		2148	{
		2149	SvIVX (AvARRAY (av)[0]) = 0;
		2150
		2151	/* now signal count waiters */
		2152	while (count > 0 && AvFILLp (av) > 0)
		2153	{
		2154	SV *cb;
		2155
		2156	/* swap first two elements so we can shift a waiter */
		2157	cb = AvARRAY (av)[0];
		2158	AvARRAY (av)[0] = AvARRAY (av)[1];
		2159	AvARRAY (av)[1] = cb;
		2160
		2161	cb = av_shift (av);
		2162
		2163	api_ready (aTHX_ cb);
		2164	sv_setiv (cb, 0); /* signal waiter */
		2165	SvREFCNT_dec (cb);
		2166
		2167	--count;
		2168	}
		2169	}
		2170
		2171	static int
		2172	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2173	{
		2174	/* if we are about to throw, also stop waiting */
		2175	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2176	}
		2177
		2178	static void
		2179	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2180	{
		2181	AV *av = (AV *)SvRV (arg [0]);
		2182
		2183	if (SvIVX (AvARRAY (av)[0]))
		2184	{
		2185	SvIVX (AvARRAY (av)[0]) = 0;
		2186	frame->prepare = prepare_nop;
		2187	frame->check = slf_check_nop;
		2188	}
		2189	else
		2190	{
		2191	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2192
		2193	av_push (av, waiter);
		2194
		2195	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2196	frame->prepare = prepare_schedule;
		2197	frame->check = slf_check_signal_wait;
		2198	}
		2199	}
		2200
		2201	/*****************************************************************************/
		2202	/* gensub: simple closure generation utility */
		2203
		2204	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2205
		2206	/* create a closure from XS, returns a code reference */
		2207	/* the arg can be accessed via GENSUB_ARG from the callback */
		2208	/* the callback must use dXSARGS/XSRETURN */
		2209	static SV *
		2210	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		2211	{
		2212	CV *cv = (CV *)newSV (0);
		2213
		2214	sv_upgrade ((SV *)cv, SVt_PVCV);
		2215
		2216	CvANON_on (cv);
		2217	CvISXSUB_on (cv);
		2218	CvXSUB (cv) = xsub;
		2219	GENSUB_ARG = arg;
		2220
		2221	return newRV_noinc ((SV *)cv);
		2222	}
		2223
		2224	/*****************************************************************************/
		2225	/* Coro::AIO */
		2226
		2227	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2228
		2229	/* helper storage struct */
		2230	struct io_state
		2231	{
		2232	int errorno;
		2233	I32 laststype; /* U16 in 5.10.0 */
		2234	int laststatval;
		2235	Stat_t statcache;
		2236	};
		2237
		2238	static void
		2239	coro_aio_callback (pTHX_ CV *cv)
		2240	{
		2241	dXSARGS;
		2242	AV *state = (AV *)GENSUB_ARG;
		2243	SV *coro = av_pop (state);
		2244	SV *data_sv = newSV (sizeof (struct io_state));
		2245
		2246	av_extend (state, items);
		2247
		2248	sv_upgrade (data_sv, SVt_PV);
		2249	SvCUR_set (data_sv, sizeof (struct io_state));
		2250	SvPOK_only (data_sv);
		2251
		2252	{
		2253	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2254
		2255	data->errorno = errno;
		2256	data->laststype = PL_laststype;
		2257	data->laststatval = PL_laststatval;
		2258	data->statcache = PL_statcache;
		2259	}
		2260
		2261	/* now build the result vector out of all the parameters and the data_sv */
		2262	{
		2263	int i;
		2264
		2265	for (i = 0; i < items; ++i)
		2266	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2267	}
		2268
		2269	av_push (state, data_sv);
		2270
		2271	api_ready (aTHX_ coro);
		2272	SvREFCNT_dec (coro);
		2273	SvREFCNT_dec ((AV *)state);
		2274	}
		2275
		2276	static int
		2277	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2278	{
		2279	AV *state = (AV *)frame->data;
		2280
		2281	/* if we are about to throw, return early */
		2282	/* this does not cancel the aio request, but at least */
		2283	/* it quickly returns */
		2284	if (CORO_THROW)
		2285	return 0;
		2286
		2287	/* one element that is an RV? repeat! */
		2288	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2289	return 1;
		2290
		2291	/* restore status */
		2292	{
		2293	SV *data_sv = av_pop (state);
		2294	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2295
		2296	errno = data->errorno;
		2297	PL_laststype = data->laststype;
		2298	PL_laststatval = data->laststatval;
		2299	PL_statcache = data->statcache;
		2300
		2301	SvREFCNT_dec (data_sv);
		2302	}
		2303
		2304	/* push result values */
		2305	{
		2306	dSP;
		2307	int i;
		2308
		2309	EXTEND (SP, AvFILLp (state) + 1);
		2310	for (i = 0; i <= AvFILLp (state); ++i)
		2311	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2312
		2313	PUTBACK;
		2314	}
		2315
		2316	return 0;
		2317	}
		2318
		2319	static void
		2320	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2321	{
		2322	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2323	SV *coro_hv = SvRV (coro_current);
		2324	struct coro *coro = SvSTATE_hv (coro_hv);
		2325
		2326	/* put our coroutine id on the state arg */
		2327	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2328
		2329	/* first see whether we have a non-zero priority and set it as AIO prio */
		2330	if (coro->prio)
		2331	{
		2332	dSP;
		2333
		2334	static SV *prio_cv;
		2335	static SV *prio_sv;
		2336
		2337	if (expect_false (!prio_cv))
		2338	{
		2339	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2340	prio_sv = newSViv (0);
		2341	}
		2342
		2343	PUSHMARK (SP);
		2344	sv_setiv (prio_sv, coro->prio);
		2345	XPUSHs (prio_sv);
		2346
		2347	PUTBACK;
		2348	call_sv (prio_cv, G_VOID | G_DISCARD);
		2349	}
		2350
		2351	/* now call the original request */
		2352	{
		2353	dSP;
		2354	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2355	int i;
		2356
		2357	PUSHMARK (SP);
		2358
		2359	/* first push all args to the stack */
		2360	EXTEND (SP, items + 1);
		2361
		2362	for (i = 0; i < items; ++i)
		2363	PUSHs (arg [i]);
		2364
		2365	/* now push the callback closure */
		2366	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2367
		2368	/* now call the AIO function - we assume our request is uncancelable */
		2369	PUTBACK;
		2370	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2371	}
		2372
		2373	/* now that the requets is going, we loop toll we have a result */
		2374	frame->data = (void *)state;
		2375	frame->prepare = prepare_schedule;
		2376	frame->check = slf_check_aio_req;
		2377	}
		2378
		2379	static void
		2380	coro_aio_req_xs (pTHX_ CV *cv)
		2381	{
		2382	dXSARGS;
		2383
		2384	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2385
		2386	XSRETURN_EMPTY;
		2387	}
		2388
		2389	/*****************************************************************************/
1815		2390
1816	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2391	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1817		2392
1818	PROTOTYPES: DISABLE	2393	PROTOTYPES: DISABLE
1819		2394
1820	BOOT:	2395	BOOT:
1821	{	2396	{
1822	#ifdef USE_ITHREADS	2397	#ifdef USE_ITHREADS
1823	MUTEX_INIT (&coro_lock);
1824	# if CORO_PTHREAD	2398	# if CORO_PTHREAD
1825	coro_thx = PERL_GET_CONTEXT;	2399	coro_thx = PERL_GET_CONTEXT;
1826	# endif	2400	# endif
1827	#endif	2401	#endif
1828	BOOT_PAGESIZE;	2402	BOOT_PAGESIZE;
…		…
1849	main_top_env = PL_top_env;	2423	main_top_env = PL_top_env;
1850		2424
1851	while (main_top_env->je_prev)	2425	while (main_top_env->je_prev)
1852	main_top_env = main_top_env->je_prev;	2426	main_top_env = main_top_env->je_prev;
1853		2427
		2428	{
		2429	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2430
		2431	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2432	hv_store_ent (PL_custom_op_names, slf,
		2433	newSVpv ("coro_slf", 0), 0);
		2434
		2435	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2436	hv_store_ent (PL_custom_op_descs, slf,
		2437	newSVpv ("coro schedule like function", 0), 0);
		2438	}
		2439
1854	coroapi.ver = CORO_API_VERSION;	2440	coroapi.ver = CORO_API_VERSION;
1855	coroapi.rev = CORO_API_REVISION;	2441	coroapi.rev = CORO_API_REVISION;
		2442
1856	coroapi.transfer = api_transfer;	2443	coroapi.transfer = api_transfer;
		2444
		2445	coroapi.sv_state = SvSTATE_;
		2446	coroapi.execute_slf = api_execute_slf;
		2447	coroapi.prepare_nop = prepare_nop;
		2448	coroapi.prepare_schedule = prepare_schedule;
		2449	coroapi.prepare_cede = prepare_cede;
		2450	coroapi.prepare_cede_notself = prepare_cede_notself;
1857		2451
1858	{	2452	{
1859	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2453	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1860		2454
1861	if (!svp) croak ("Time::HiRes is required");	2455	if (!svp) croak ("Time::HiRes is required");
…		…
1894	av_push (coro->args, newSVsv (ST (i)));	2488	av_push (coro->args, newSVsv (ST (i)));
1895	}	2489	}
1896	OUTPUT:	2490	OUTPUT:
1897	RETVAL	2491	RETVAL
1898		2492
1899	# these not obviously related functions are all rolled into the same xs
1900	# function to increase chances that they all will call transfer with the same
1901	# stack offset
1902	void	2493	void
1903	_set_stacklevel (...)	2494	transfer (...)
1904	ALIAS:	2495	PROTOTYPE: $$
1905	Coro::State::transfer = 1	2496	CODE:
1906	Coro::schedule = 2	2497	CORO_EXECUTE_SLF_XS (slf_init_transfer);
1907	Coro::cede = 3
1908	Coro::cede_notself = 4
1909	CODE:
1910	{
1911	struct transfer_args ta;
1912
1913	PUTBACK;
1914	switch (ix)
1915	{
1916	case 0:
1917	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1918	break;
1919
1920	case 1:
1921	if (items != 2)
1922	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1923
1924	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1925	break;
1926
1927	case 2:
1928	prepare_schedule (aTHX_ &ta);
1929	break;
1930
1931	case 3:
1932	prepare_cede (aTHX_ &ta);
1933	break;
1934
1935	case 4:
1936	if (!prepare_cede_notself (aTHX_ &ta))
1937	XSRETURN_EMPTY;
1938
1939	break;
1940	}
1941	SPAGAIN;
1942
1943	BARRIER;
1944	PUTBACK;
1945	TRANSFER (ta, 0);
1946	SPAGAIN; /* might be the sp of a different coroutine now */
1947	/* be extra careful not to ever do anything after TRANSFER */
1948	}
1949		2498
1950	bool	2499	bool
1951	_destroy (SV *coro_sv)	2500	_destroy (SV *coro_sv)
1952	CODE:	2501	CODE:
1953	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2502	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1960	CODE:	2509	CODE:
1961	_exit (code);	2510	_exit (code);
1962		2511
1963	int	2512	int
1964	cctx_stacksize (int new_stacksize = 0)	2513	cctx_stacksize (int new_stacksize = 0)
		2514	PROTOTYPE: ;$
1965	CODE:	2515	CODE:
1966	RETVAL = cctx_stacksize;	2516	RETVAL = cctx_stacksize;
1967	if (new_stacksize)	2517	if (new_stacksize)
1968	{	2518	{
1969	cctx_stacksize = new_stacksize;	2519	cctx_stacksize = new_stacksize;
…		…
1972	OUTPUT:	2522	OUTPUT:
1973	RETVAL	2523	RETVAL
1974		2524
1975	int	2525	int
1976	cctx_max_idle (int max_idle = 0)	2526	cctx_max_idle (int max_idle = 0)
		2527	PROTOTYPE: ;$
1977	CODE:	2528	CODE:
1978	RETVAL = cctx_max_idle;	2529	RETVAL = cctx_max_idle;
1979	if (max_idle > 1)	2530	if (max_idle > 1)
1980	cctx_max_idle = max_idle;	2531	cctx_max_idle = max_idle;
1981	OUTPUT:	2532	OUTPUT:
1982	RETVAL	2533	RETVAL
1983		2534
1984	int	2535	int
1985	cctx_count ()	2536	cctx_count ()
		2537	PROTOTYPE:
1986	CODE:	2538	CODE:
1987	RETVAL = cctx_count;	2539	RETVAL = cctx_count;
1988	OUTPUT:	2540	OUTPUT:
1989	RETVAL	2541	RETVAL
1990		2542
1991	int	2543	int
1992	cctx_idle ()	2544	cctx_idle ()
		2545	PROTOTYPE:
1993	CODE:	2546	CODE:
1994	RETVAL = cctx_idle;	2547	RETVAL = cctx_idle;
1995	OUTPUT:	2548	OUTPUT:
1996	RETVAL	2549	RETVAL
1997		2550
1998	void	2551	void
1999	list ()	2552	list ()
		2553	PROTOTYPE:
2000	PPCODE:	2554	PPCODE:
2001	{	2555	{
2002	struct coro *coro;	2556	struct coro *coro;
2003	for (coro = coro_first; coro; coro = coro->next)	2557	for (coro = coro_first; coro; coro = coro->next)
2004	if (coro->hv)	2558	if (coro->hv)
…		…
2066		2620
2067	void	2621	void
2068	throw (Coro::State self, SV *throw = &PL_sv_undef)	2622	throw (Coro::State self, SV *throw = &PL_sv_undef)
2069	PROTOTYPE: $;$	2623	PROTOTYPE: $;$
2070	CODE:	2624	CODE:
		2625	{
		2626	struct coro *current = SvSTATE_current;
		2627	SV **throwp = self == current ? &CORO_THROW : &self->except;
2071	SvREFCNT_dec (self->throw);	2628	SvREFCNT_dec (*throwp);
2072	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2629	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2630	}
2073		2631
2074	void	2632	void
2075	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2633	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2634	PROTOTYPE: $;$
		2635	C_ARGS: aTHX_ coro, flags
2076		2636
2077	SV *	2637	SV *
2078	has_cctx (Coro::State coro)	2638	has_cctx (Coro::State coro)
2079	PROTOTYPE: $	2639	PROTOTYPE: $
2080	CODE:	2640	CODE:
…		…
2104	OUTPUT:	2664	OUTPUT:
2105	RETVAL	2665	RETVAL
2106		2666
2107	void	2667	void
2108	force_cctx ()	2668	force_cctx ()
		2669	PROTOTYPE:
2109	CODE:	2670	CODE:
2110	struct coro *coro = SvSTATE (coro_current);
2111	coro->cctx->idle_sp = 0;	2671	SvSTATE_current->cctx->idle_sp = 0;
2112		2672
2113	void	2673	void
2114	swap_defsv (Coro::State self)	2674	swap_defsv (Coro::State self)
2115	PROTOTYPE: $	2675	PROTOTYPE: $
2116	ALIAS:	2676	ALIAS:
2117	swap_defav = 1	2677	swap_defav = 1
2118	CODE:	2678	CODE:
2119	if (!self->slot)	2679	if (!self->slot)
2120	croak ("cannot swap state with coroutine that has no saved state");	2680	croak ("cannot swap state with coroutine that has no saved state,");
2121	else	2681	else
2122	{	2682	{
2123	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);	2683	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2124	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2684	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2125		2685
2126	SV *tmp = *src; *src = *dst; *dst = tmp;	2686	SV *tmp = *src; *src = *dst; *dst = tmp;
2127	}	2687	}
		2688
2128		2689
2129	MODULE = Coro::State PACKAGE = Coro	2690	MODULE = Coro::State PACKAGE = Coro
2130		2691
2131	BOOT:	2692	BOOT:
2132	{	2693	{
…		…
2157	coroapi.schedule = api_schedule;	2718	coroapi.schedule = api_schedule;
2158	coroapi.cede = api_cede;	2719	coroapi.cede = api_cede;
2159	coroapi.cede_notself = api_cede_notself;	2720	coroapi.cede_notself = api_cede_notself;
2160	coroapi.ready = api_ready;	2721	coroapi.ready = api_ready;
2161	coroapi.is_ready = api_is_ready;	2722	coroapi.is_ready = api_is_ready;
2162	coroapi.nready = &coro_nready;	2723	coroapi.nready = coro_nready;
2163	coroapi.current = coro_current;	2724	coroapi.current = coro_current;
2164		2725
2165	GCoroAPI = &coroapi;	2726	/*GCoroAPI = &coroapi;*/
2166	sv_setiv (sv, (IV)&coroapi);	2727	sv_setiv (sv, (IV)&coroapi);
2167	SvREADONLY_on (sv);	2728	SvREADONLY_on (sv);
2168	}	2729	}
2169	}	2730	}
		2731
		2732	void
		2733	schedule (...)
		2734	CODE:
		2735	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		2736
		2737	void
		2738	cede (...)
		2739	CODE:
		2740	CORO_EXECUTE_SLF_XS (slf_init_cede);
		2741
		2742	void
		2743	cede_notself (...)
		2744	CODE:
		2745	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2170		2746
2171	void	2747	void
2172	_set_current (SV *current)	2748	_set_current (SV *current)
2173	PROTOTYPE: $	2749	PROTOTYPE: $
2174	CODE:	2750	CODE:
…		…
2177		2753
2178	void	2754	void
2179	_set_readyhook (SV *hook)	2755	_set_readyhook (SV *hook)
2180	PROTOTYPE: $	2756	PROTOTYPE: $
2181	CODE:	2757	CODE:
2182	LOCK;
2183	SvREFCNT_dec (coro_readyhook);	2758	SvREFCNT_dec (coro_readyhook);
2184	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2759	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2185	UNLOCK;
2186		2760
2187	int	2761	int
2188	prio (Coro::State coro, int newprio = 0)	2762	prio (Coro::State coro, int newprio = 0)
		2763	PROTOTYPE: $;$
2189	ALIAS:	2764	ALIAS:
2190	nice = 1	2765	nice = 1
2191	CODE:	2766	CODE:
2192	{	2767	{
2193	RETVAL = coro->prio;	2768	RETVAL = coro->prio;
…		…
2208		2783
2209	SV *	2784	SV *
2210	ready (SV *self)	2785	ready (SV *self)
2211	PROTOTYPE: $	2786	PROTOTYPE: $
2212	CODE:	2787	CODE:
2213	RETVAL = boolSV (api_ready (self));	2788	RETVAL = boolSV (api_ready (aTHX_ self));
2214	OUTPUT:	2789	OUTPUT:
2215	RETVAL	2790	RETVAL
2216		2791
2217	int	2792	int
2218	nready (...)	2793	nready (...)
…		…
2225	# for async_pool speedup	2800	# for async_pool speedup
2226	void	2801	void
2227	_pool_1 (SV *cb)	2802	_pool_1 (SV *cb)
2228	CODE:	2803	CODE:
2229	{	2804	{
2230	struct coro *coro = SvSTATE (coro_current);
2231	HV *hv = (HV *)SvRV (coro_current);	2805	HV *hv = (HV *)SvRV (coro_current);
		2806	struct coro *coro = SvSTATE_hv ((SV *)hv);
2232	AV *defav = GvAV (PL_defgv);	2807	AV *defav = GvAV (PL_defgv);
2233	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2808	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2234	AV *invoke_av;	2809	AV *invoke_av;
2235	int i, len;	2810	int i, len;
2236		2811
…		…
2257	{	2832	{
2258	av_fill (defav, len - 1);	2833	av_fill (defav, len - 1);
2259	for (i = 0; i < len; ++i)	2834	for (i = 0; i < len; ++i)
2260	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2835	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2261	}	2836	}
2262
2263	SvREFCNT_dec (invoke);
2264	}	2837	}
2265		2838
2266	void	2839	void
2267	_pool_2 (SV *cb)	2840	_pool_2 (SV *cb)
2268	CODE:	2841	CODE:
2269	{	2842	{
2270	struct coro *coro = SvSTATE (coro_current);	2843	HV *hv = (HV *)SvRV (coro_current);
		2844	struct coro *coro = SvSTATE_hv ((SV *)hv);
2271		2845
2272	sv_setsv (cb, &PL_sv_undef);	2846	sv_setsv (cb, &PL_sv_undef);
2273		2847
2274	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2848	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2275	coro->saved_deffh = 0;	2849	coro->saved_deffh = 0;
…		…
2282	SvREFCNT_dec (old);	2856	SvREFCNT_dec (old);
2283	croak ("\3async_pool terminate\2\n");	2857	croak ("\3async_pool terminate\2\n");
2284	}	2858	}
2285		2859
2286	av_clear (GvAV (PL_defgv));	2860	av_clear (GvAV (PL_defgv));
2287	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2861	hv_store (hv, "desc", sizeof ("desc") - 1,
2288	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2862	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2289		2863
2290	coro->prio = 0;	2864	coro->prio = 0;
2291		2865
2292	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2866	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2293	api_trace (coro_current, 0);	2867	api_trace (aTHX_ coro_current, 0);
2294		2868
2295	av_push (av_async_pool, newSVsv (coro_current));	2869	av_push (av_async_pool, newSVsv (coro_current));
2296	}	2870	}
2297		2871
2298	#if 0
2299		2872
2300	void	2873	MODULE = Coro::State PACKAGE = PerlIO::cede
2301	_generator_call (...)	2874
2302	PROTOTYPE: @	2875	BOOT:
2303	PPCODE:	2876	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2304	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);	2877
2305	xxxx	2878
2306	abort ();	2879	MODULE = Coro::State PACKAGE = Coro::Semaphore
2307		2880
2308	SV *	2881	SV *
2309	gensub (SV *sub, ...)	2882	new (SV *klass, SV *count = 0)
2310	PROTOTYPE: &;@	2883	CODE:
2311	CODE:	2884	RETVAL = sv_bless (
2312	{	2885	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2313	struct coro *coro;	2886	GvSTASH (CvGV (cv))
2314	MAGIC *mg;	2887	);
2315	CV *xcv;
2316	CV *ncv = (CV *)newSV_type (SVt_PVCV);
2317	int i;
2318
2319	CvGV (ncv) = CvGV (cv);
2320	CvFILE (ncv) = CvFILE (cv);
2321
2322	Newz (0, coro, 1, struct coro);
2323	coro->args = newAV ();
2324	coro->flags = CF_NEW;
2325
2326	av_extend (coro->args, items - 1);
2327	for (i = 1; i < items; i++)
2328	av_push (coro->args, newSVsv (ST (i)));
2329
2330	CvISXSUB_on (ncv);
2331	CvXSUBANY (ncv).any_ptr = (void *)coro;
2332
2333	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2334
2335	CvXSUB (ncv) = CvXSUB (xcv);
2336	CvANON_on (ncv);
2337
2338	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2339	RETVAL = newRV_noinc ((SV *)ncv);
2340	}
2341	OUTPUT:	2888	OUTPUT:
2342	RETVAL	2889	RETVAL
2343		2890
2344	#endif	2891	# helper for Coro::Channel
		2892	SV *
		2893	_alloc (int count)
		2894	CODE:
		2895	RETVAL = coro_waitarray_new (aTHX_ count);
		2896	OUTPUT:
		2897	RETVAL
2345		2898
2346		2899	SV *
2347	MODULE = Coro::State PACKAGE = Coro::AIO	2900	count (SV *self)
		2901	CODE:
		2902	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2903	OUTPUT:
		2904	RETVAL
2348		2905
2349	void	2906	void
2350	_get_state (SV *self)	2907	up (SV *self, int adjust = 1)
2351	PPCODE:	2908	ALIAS:
2352	{	2909	adjust = 1
2353	AV *defav = GvAV (PL_defgv);	2910	CODE:
2354	AV *av = newAV ();	2911	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2355	int i;
2356	SV *data_sv = newSV (sizeof (struct io_state));
2357	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2358	SvCUR_set (data_sv, sizeof (struct io_state));
2359	SvPOK_only (data_sv);
2360
2361	data->errorno = errno;
2362	data->laststype = PL_laststype;
2363	data->laststatval = PL_laststatval;
2364	data->statcache = PL_statcache;
2365
2366	av_extend (av, AvFILLp (defav) + 1 + 1);
2367
2368	for (i = 0; i <= AvFILLp (defav); ++i)
2369	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2370
2371	av_push (av, data_sv);
2372
2373	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2374
2375	api_ready (self);
2376	}
2377		2912
2378	void	2913	void
2379	_set_state (SV *state)	2914	down (SV *self)
2380	PROTOTYPE: $	2915	CODE:
		2916	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		2917
		2918	void
		2919	wait (SV *self)
		2920	CODE:
		2921	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
		2922
		2923	void
		2924	try (SV *self)
		2925	PPCODE:
		2926	{
		2927	AV *av = (AV *)SvRV (self);
		2928	SV *count_sv = AvARRAY (av)[0];
		2929	IV count = SvIVX (count_sv);
		2930
		2931	if (count > 0)
		2932	{
		2933	--count;
		2934	SvIVX (count_sv) = count;
		2935	XSRETURN_YES;
		2936	}
		2937	else
		2938	XSRETURN_NO;
		2939	}
		2940
		2941	void
		2942	waiters (SV *self)
		2943	PPCODE:
		2944	{
		2945	AV *av = (AV *)SvRV (self);
		2946	int wcount = AvFILLp (av) + 1 - 1;
		2947
		2948	if (GIMME_V == G_SCALAR)
		2949	XPUSHs (sv_2mortal (newSViv (wcount)));
		2950	else
		2951	{
		2952	int i;
		2953	EXTEND (SP, wcount);
		2954	for (i = 1; i <= wcount; ++i)
		2955	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
		2956	}
		2957	}
		2958
		2959	MODULE = Coro::State PACKAGE = Coro::Signal
		2960
		2961	SV *
		2962	new (SV *klass)
2381	PPCODE:	2963	CODE:
		2964	RETVAL = sv_bless (
		2965	coro_waitarray_new (aTHX_ 0),
		2966	GvSTASH (CvGV (cv))
		2967	);
		2968	OUTPUT:
		2969	RETVAL
		2970
		2971	void
		2972	wait (SV *self)
		2973	CODE:
		2974	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		2975
		2976	void
		2977	broadcast (SV *self)
		2978	CODE:
2382	{	2979	{
2383	AV *av = (AV *)SvRV (state);	2980	AV *av = (AV *)SvRV (self);
2384	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);	2981	coro_signal_wake (aTHX_ av, AvFILLp (av));
2385	int i;	2982	}
2386		2983
2387	errno = data->errorno;	2984	void
2388	PL_laststype = data->laststype;	2985	send (SV *self)
2389	PL_laststatval = data->laststatval;	2986	CODE:
2390	PL_statcache = data->statcache;	2987	{
		2988	AV *av = (AV *)SvRV (self);
2391		2989
2392	EXTEND (SP, AvFILLp (av));	2990	if (AvFILLp (av))
2393	for (i = 0; i < AvFILLp (av); ++i)	2991	coro_signal_wake (aTHX_ av, 1);
2394	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	2992	else
		2993	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2395	}	2994	}
		2995
		2996	IV
		2997	awaited (SV *self)
		2998	CODE:
		2999	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3000	OUTPUT:
		3001	RETVAL
2396		3002
2397		3003
2398	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3004	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2399		3005
2400	BOOT:	3006	BOOT:
2401	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	3007	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2402		3008
2403	SV *	3009	void
2404	_schedule (...)	3010	_schedule (...)
2405	PROTOTYPE: @
2406	CODE:	3011	CODE:
2407	{	3012	{
2408	static int incede;	3013	static int incede;
2409		3014
2410	api_cede_notself ();	3015	api_cede_notself (aTHX);
2411		3016
2412	++incede;	3017	++incede;
2413	while (coro_nready >= incede && api_cede ())	3018	while (coro_nready >= incede && api_cede (aTHX))
2414	;	3019	;
2415		3020
2416	sv_setsv (sv_activity, &PL_sv_undef);	3021	sv_setsv (sv_activity, &PL_sv_undef);
2417	if (coro_nready >= incede)	3022	if (coro_nready >= incede)
2418	{	3023	{
2419	PUSHMARK (SP);	3024	PUSHMARK (SP);
2420	PUTBACK;	3025	PUTBACK;
2421	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3026	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2422	SPAGAIN;
2423	}	3027	}
2424		3028
2425	--incede;	3029	--incede;
2426	}	3030	}
2427		3031
2428		3032
2429	MODULE = Coro::State PACKAGE = PerlIO::cede	3033	MODULE = Coro::State PACKAGE = Coro::AIO
2430		3034
2431	BOOT:	3035	void
2432	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3036	_register (char *target, char *proto, SV *req)
		3037	CODE:
		3038	{
		3039	HV *st;
		3040	GV *gvp;
		3041	CV *req_cv = sv_2cv (req, &st, &gvp, 0);
		3042	/* newXSproto doesn't return the CV on 5.8 */
		3043	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3044	sv_setpv ((SV *)slf_cv, proto);
		3045	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3046	}
2433		3047

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