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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC vs.
Revision 1.313 by root, Thu Nov 20 03:22:59 2008 UTC

…		…
16		16
17	#ifdef WIN32	17	#ifdef WIN32
18	# undef setjmp	18	# undef setjmp
19	# undef longjmp	19	# undef longjmp
20	# undef _exit	20	# undef _exit
21	# define setjmp _setjmp // deep magic, don't ask	21	# define setjmp _setjmp /* deep magic */
22	#else	22	#else
23	# include <inttypes.h> /* most portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
24	#endif	24	#endif
25		25
26	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
…		…
55		55
56	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61		61
62	#if !PERL_VERSION_ATLEAST (5,6,0)	62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr	63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr	64	# define PL_ppaddr ppaddr
65	# endif	65	# endif
…		…
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
…		…
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. */
121	#if __GNUC__ >= 4	124	#if __GNUC__ >= 4
		125	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	126	# define STACKLEVEL __builtin_frame_address (0)
123	#else	127	#else
124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	128	# define dSTACKLEVEL volatile void *stacklevel
		129	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	130	#endif
126		131
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	132	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		133
129	#if __GNUC__ >= 3	134	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	145	#define expect_true(expr) expect ((expr) != 0, 1)
141		146
142	#define NOINLINE attribute ((noinline))	147	#define NOINLINE attribute ((noinline))
143		148
144	#include "CoroAPI.h"	149	#include "CoroAPI.h"
		150	#define GCoroAPI (&coroapi) /* very sneaky */
145		151
146	#ifdef USE_ITHREADS	152	#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	153	# if CORO_PTHREAD
152	static void *coro_thx;	154	static void *coro_thx;
153	# endif	155	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	156	#endif
161		157
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
177	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);
178		163
179	static U32 cctx_gen;	164	static U32 cctx_gen;
180	static size_t cctx_stacksize = CORO_STACKSIZE;	165	static size_t cctx_stacksize = CORO_STACKSIZE;
181	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
182	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
183	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
184	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
185	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 */
186	static volatile struct coro *transfer_next;
187
188	struct transfer_args
189	{
190	struct coro *prev, *next;
191	};
192		171
193	static GV *irsgv; /* $/ */	172	static GV *irsgv; /* $/ */
194	static GV *stdoutgv; /* *STDOUT */	173	static GV *stdoutgv; /* *STDOUT */
195	static SV *rv_diehook;	174	static SV *rv_diehook;
196	static SV *rv_warnhook;	175	static SV *rv_warnhook;
197	static HV *hv_sig; /* %SIG */	176	static HV *hv_sig; /* %SIG */
198		177
199	/* async_pool helper stuff */	178	/* async_pool helper stuff */
200	static SV *sv_pool_rss;	179	static SV *sv_pool_rss;
201	static SV *sv_pool_size;	180	static SV *sv_pool_size;
		181	static SV *sv_async_pool_idle;
202	static AV *av_async_pool;	182	static AV *av_async_pool;
		183	static SV *sv_Coro;
		184	static CV *cv_pool_handler;
		185	static CV *cv_coro_new;
203		186
204	/* Coro::AnyEvent */	187	/* Coro::AnyEvent */
205	static SV *sv_activity;	188	static SV *sv_activity;
206		189
207	static struct coro_cctx *cctx_first;	190	static struct coro_cctx *cctx_first;
…		…
215	CC_TRACE_LINE = 0x10, /* trace each statement */	198	CC_TRACE_LINE = 0x10, /* trace each statement */
216	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,	199	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217	};	200	};
218		201
219	/* this is a structure representing a c-level coroutine */	202	/* this is a structure representing a c-level coroutine */
220	typedef struct coro_cctx {	203	typedef struct coro_cctx
		204	{
221	struct coro_cctx *next;	205	struct coro_cctx *next;
222		206
223	/* the stack */	207	/* the stack */
224	void *sptr;	208	void *sptr;
225	size_t ssize;	209	size_t ssize;
…		…
243	CF_NEW = 0x0004, /* has never been switched to */	227	CF_NEW = 0x0004, /* has never been switched to */
244	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	228	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245	};	229	};
246		230
247	/* the structure where most of the perl state is stored, overlaid on the cxstack */	231	/* the structure where most of the perl state is stored, overlaid on the cxstack */
248	typedef struct {	232	typedef struct
		233	{
249	SV *defsv;	234	SV *defsv;
250	AV *defav;	235	AV *defav;
251	SV *errsv;	236	SV *errsv;
252	SV *irsgv;	237	SV *irsgv;
253	#define VAR(name,type) type name;	238	#define VAR(name,type) type name;
…		…
257		242
258	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	243	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259		244
260	/* this is a structure representing a perl-level coroutine */	245	/* this is a structure representing a perl-level coroutine */
261	struct coro {	246	struct coro {
262	/* the c coroutine allocated to this perl coroutine, if any */	247	/* the C coroutine allocated to this perl coroutine, if any */
263	coro_cctx *cctx;	248	coro_cctx *cctx;
264		249
265	/* process data */	250	/* state data */
		251	struct CoroSLF slf_frame; /* saved slf frame */
266	AV *mainstack;	252	AV *mainstack;
267	perl_slots *slot; /* basically the saved sp */	253	perl_slots *slot; /* basically the saved sp */
268		254
		255	CV *startcv; /* the CV to execute */
269	AV *args; /* data associated with this coroutine (initial args) */	256	AV *args; /* data associated with this coroutine (initial args) */
270	int refcnt; /* coroutines are refcounted, yes */	257	int refcnt; /* coroutines are refcounted, yes */
271	int flags; /* CF_ flags */	258	int flags; /* CF_ flags */
272	HV *hv; /* the perl hash associated with this coro, if any */	259	HV *hv; /* the perl hash associated with this coro, if any */
		260	void (*on_destroy)(pTHX_ struct coro *coro);
273		261
274	/* statistics */	262	/* statistics */
275	int usecount; /* number of transfers to this coro */	263	int usecount; /* number of transfers to this coro */
276		264
277	/* coro process data */	265	/* coro process data */
278	int prio;	266	int prio;
279	SV *throw; /* exception to be thrown */	267	SV *except; /* exception to be thrown */
		268	SV *rouse_cb;
280		269
281	/* async_pool */	270	/* async_pool */
282	SV *saved_deffh;	271	SV *saved_deffh;
		272	SV *invoke_cb;
		273	AV *invoke_av;
283		274
284	/* linked list */	275	/* linked list */
285	struct coro *next, *prev;	276	struct coro *next, *prev;
286	};	277	};
287		278
288	typedef struct coro *Coro__State;	279	typedef struct coro *Coro__State;
289	typedef struct coro *Coro__State_or_hashref;	280	typedef struct coro *Coro__State_or_hashref;
		281
		282	/* the following variables are effectively part of the perl context */
		283	/* and get copied between struct coro and these variables */
		284	/* the mainr easonw e don't support windows process emulation */
		285	static struct CoroSLF slf_frame; /* the current slf frame */
290		286
291	/** Coro ********************************************************************/	287	/** Coro ********************************************************************/
292		288
293	#define PRIO_MAX 3	289	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	290	#define PRIO_HIGH 1
…		…
299		295
300	/* for Coro.pm */	296	/* for Coro.pm */
301	static SV *coro_current;	297	static SV *coro_current;
302	static SV *coro_readyhook;	298	static SV *coro_readyhook;
303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	299	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		300	static CV *cv_coro_run, *cv_coro_terminate;
304	static struct coro *coro_first;	301	static struct coro *coro_first;
305	#define coro_nready coroapi.nready	302	#define coro_nready coroapi.nready
306		303
307	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
308		305
…		…
332	#if PERL_VERSION_ATLEAST (5,10,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	330	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
334	get_hv (name, create);	331	get_hv (name, create);
335	#endif	332	#endif
336	return get_hv (name, create);	333	return get_hv (name, create);
		334	}
		335
		336	/* may croak */
		337	INLINE CV *
		338	coro_sv_2cv (pTHX_ SV *sv)
		339	{
		340	HV *st;
		341	GV *gvp;
		342	return sv_2cv (sv, &st, &gvp, 0);
337	}	343	}
338		344
339	static AV *	345	static AV *
340	coro_clone_padlist (pTHX_ CV *cv)	346	coro_clone_padlist (pTHX_ CV *cv)
341	{	347	{
…		…
395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	401	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396		402
397	return 0;	403	return 0;
398	}	404	}
399		405
400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	406	#define CORO_MAGIC_type_cv 26
401	#define CORO_MAGIC_type_state PERL_MAGIC_ext	407	#define CORO_MAGIC_type_state PERL_MAGIC_ext
402		408
403	static MGVTBL coro_cv_vtbl = {	409	static MGVTBL coro_cv_vtbl = {
404	0, 0, 0, 0,	410	0, 0, 0, 0,
405	coro_cv_free	411	coro_cv_free
406	};	412	};
407		413
		414	#define CORO_MAGIC_NN(sv, type) \
		415	(expect_true (SvMAGIC (sv)->mg_type == type) \
		416	? SvMAGIC (sv) \
		417	: mg_find (sv, type))
		418
408	#define CORO_MAGIC(sv, type) \	419	#define CORO_MAGIC(sv, type) \
409	SvMAGIC (sv) \	420	(expect_true (SvMAGIC (sv)) \
410	? SvMAGIC (sv)->mg_type == type \	421	? CORO_MAGIC_NN (sv, type) \
411	? SvMAGIC (sv) \
412	: mg_find (sv, type) \
413	: 0	422	: 0)
414		423
415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	424	#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)	425	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417		426
418	INLINE struct coro *	427	INLINE struct coro *
419	SvSTATE_ (pTHX_ SV *coro)	428	SvSTATE_ (pTHX_ SV *coro)
420	{	429	{
421	HV *stash;	430	HV *stash;
…		…
438	mg = CORO_MAGIC_state (coro);	447	mg = CORO_MAGIC_state (coro);
439	return (struct coro *)mg->mg_ptr;	448	return (struct coro *)mg->mg_ptr;
440	}	449	}
441		450
442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	451	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		452
		453	/* faster than SvSTATE, but expects a coroutine hv */
		454	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		455	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443		456
444	/* the next two functions merely cache the padlists */	457	/* the next two functions merely cache the padlists */
445	static void	458	static void
446	get_padlist (pTHX_ CV *cv)	459	get_padlist (pTHX_ CV *cv)
447	{	460	{
…		…
453	else	466	else
454	{	467	{
455	#if CORO_PREFER_PERL_FUNCTIONS	468	#if CORO_PREFER_PERL_FUNCTIONS
456	/* this is probably cleaner? but also slower! */	469	/* this is probably cleaner? but also slower! */
457	/* in practise, it seems to be less stable */	470	/* in practise, it seems to be less stable */
458	CV *cp = Perl_cv_clone (cv);	471	CV *cp = Perl_cv_clone (aTHX_ cv);
459	CvPADLIST (cv) = CvPADLIST (cp);	472	CvPADLIST (cv) = CvPADLIST (cp);
460	CvPADLIST (cp) = 0;	473	CvPADLIST (cp) = 0;
461	SvREFCNT_dec (cp);	474	SvREFCNT_dec (cp);
462	#else	475	#else
463	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	476	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
514	CvPADLIST (cv) = (AV *)POPs;	527	CvPADLIST (cv) = (AV *)POPs;
515	}	528	}
516		529
517	PUTBACK;	530	PUTBACK;
518	}	531	}
		532
		533	slf_frame = c->slf_frame;
		534	CORO_THROW = c->except;
519	}	535	}
520		536
521	static void	537	static void
522	save_perl (pTHX_ Coro__State c)	538	save_perl (pTHX_ Coro__State c)
523	{	539	{
		540	c->except = CORO_THROW;
		541	c->slf_frame = slf_frame;
		542
524	{	543	{
525	dSP;	544	dSP;
526	I32 cxix = cxstack_ix;	545	I32 cxix = cxstack_ix;
527	PERL_CONTEXT *ccstk = cxstack;	546	PERL_CONTEXT *ccstk = cxstack;
528	PERL_SI *top_si = PL_curstackinfo;	547	PERL_SI *top_si = PL_curstackinfo;
…		…
595	#undef VAR	614	#undef VAR
596	}	615	}
597	}	616	}
598		617
599	/*	618	/*
600	* allocate various perl stacks. This is an exact copy	619	* allocate various perl stacks. This is almost an exact copy
601	* of perl.c:init_stacks, except that it uses less memory	620	* of perl.c:init_stacks, except that it uses less memory
602	* on the (sometimes correct) assumption that coroutines do	621	* on the (sometimes correct) assumption that coroutines do
603	* not usually need a lot of stackspace.	622	* not usually need a lot of stackspace.
604	*/	623	*/
605	#if CORO_PREFER_PERL_FUNCTIONS	624	#if CORO_PREFER_PERL_FUNCTIONS
606	# define coro_init_stacks init_stacks	625	# define coro_init_stacks(thx) init_stacks ()
607	#else	626	#else
608	static void	627	static void
609	coro_init_stacks (pTHX)	628	coro_init_stacks (pTHX)
610	{	629	{
611	PL_curstackinfo = new_stackinfo(32, 8);	630	PL_curstackinfo = new_stackinfo(32, 8);
…		…
674	#if !PERL_VERSION_ATLEAST (5,10,0)	693	#if !PERL_VERSION_ATLEAST (5,10,0)
675	Safefree (PL_retstack);	694	Safefree (PL_retstack);
676	#endif	695	#endif
677	}	696	}
678		697
		698	#define CORO_RSS \
		699	rss += sizeof (SYM (curstackinfo)); \
		700	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		702	rss += SYM (tmps_max) * sizeof (SV *); \
		703	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		704	rss += SYM (scopestack_max) * sizeof (I32); \
		705	rss += SYM (savestack_max) * sizeof (ANY);
		706
679	static size_t	707	static size_t
680	coro_rss (pTHX_ struct coro *coro)	708	coro_rss (pTHX_ struct coro *coro)
681	{	709	{
682	size_t rss = sizeof (*coro);	710	size_t rss = sizeof (*coro);
683		711
684	if (coro->mainstack)	712	if (coro->mainstack)
685	{	713	{
686	perl_slots tmp_slot;
687	perl_slots *slot;
688
689	if (coro->flags & CF_RUNNING)	714	if (coro->flags & CF_RUNNING)
690	{	715	{
691	slot = &tmp_slot;	716	#define SYM(sym) PL_ ## sym
692		717	CORO_RSS;
693	#define VAR(name,type) slot->name = PL_ ## name;
694	# include "state.h"
695	#undef VAR	718	#undef SYM
696	}	719	}
697	else	720	else
698	slot = coro->slot;
699
700	if (slot)
701	{	721	{
702	rss += sizeof (slot->curstackinfo);	722	#define SYM(sym) coro->slot->sym
703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	723	CORO_RSS;
704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	724	#undef SYM
705	rss += slot->tmps_max * sizeof (SV *);
706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707	rss += slot->scopestack_max * sizeof (I32);
708	rss += slot->savestack_max * sizeof (ANY);
709
710	#if !PERL_VERSION_ATLEAST (5,10,0)
711	rss += slot->retstack_max * sizeof (OP *);
712	#endif
713	}	725	}
714	}	726	}
715		727
716	return rss;	728	return rss;
717	}
718
719	/** set stacklevel support **************************************************/
720
721	/* we sometimes need to create the effect of pp_slf calling us */
722	#define SLF_HEAD (void)0
723	/* we sometimes need to create the effect of leaving via pp_slf */
724	#define SLF_TAIL slf_tail (aTHX)
725
726	INLINE void
727	slf_tail (pTHX)
728	{
729	dSP;
730	SV **bot = SP;
731
732	int gimme = GIMME_V;
733
734	/* make sure we put something on the stack in scalar context */
735	if (gimme == G_SCALAR)
736	{
737	if (sp == bot)
738	XPUSHs (&PL_sv_undef);
739
740	SP = bot + 1;
741	}
742
743	PUTBACK;
744	}	729	}
745		730
746	/** coroutine stack handling ************************************************/	731	/** coroutine stack handling ************************************************/
747		732
748	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	733	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
…		…
834		819
835	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	820	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836	}	821	}
837		822
838	static void	823	static void
		824	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		825	{
		826	/* kind of mega-hacky, but works */
		827	ta->next = ta->prev = (struct coro *)ta;
		828	}
		829
		830	static int
		831	slf_check_nop (pTHX_ struct CoroSLF *frame)
		832	{
		833	return 0;
		834	}
		835
		836	static UNOP coro_setup_op;
		837
		838	static void NOINLINE /* noinline to keep it out of the transfer fast path */
839	coro_setup (pTHX_ struct coro *coro)	839	coro_setup (pTHX_ struct coro *coro)
840	{	840	{
841	/*	841	/*
842	* emulate part of the perl startup here.	842	* emulate part of the perl startup here.
843	*/	843	*/
…		…
870	{	870	{
871	dSP;	871	dSP;
872	UNOP myop;	872	UNOP myop;
873		873
874	Zero (&myop, 1, UNOP);	874	Zero (&myop, 1, UNOP);
875	myop.op_next = Nullop;	875	myop.op_next = Nullop;
		876	myop.op_type = OP_ENTERSUB;
876	myop.op_flags = OPf_WANT_VOID;	877	myop.op_flags = OPf_WANT_VOID;
877		878
878	PUSHMARK (SP);	879	PUSHMARK (SP);
879	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	880	PUSHs ((SV *)coro->startcv);
880	PUTBACK;	881	PUTBACK;
881	PL_op = (OP *)&myop;	882	PL_op = (OP *)&myop;
882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	883	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883	SPAGAIN;
884	}	884	}
885		885
886	/* this newly created coroutine might be run on an existing cctx which most	886	/* this newly created coroutine might be run on an existing cctx which most
887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,	887	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888	* so we have to emulate entering pp_set_stacklevel here.
889	*/	888	*/
890	SLF_HEAD;	889	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		890	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		891
		892	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		893	coro_setup_op.op_next = PL_op;
		894	coro_setup_op.op_type = OP_CUSTOM;
		895	coro_setup_op.op_ppaddr = pp_slf;
		896	/* no flags etc. required, as an init function won't be called */
		897
		898	PL_op = (OP *)&coro_setup_op;
		899
		900	/* copy throw, in case it was set before coro_setup */
		901	CORO_THROW = coro->except;
891	}	902	}
892		903
893	static void	904	static void
894	coro_destruct (pTHX_ struct coro *coro)	905	coro_destruct (pTHX_ struct coro *coro)
895	{	906	{
…		…
919		930
920	SvREFCNT_dec (PL_diehook);	931	SvREFCNT_dec (PL_diehook);
921	SvREFCNT_dec (PL_warnhook);	932	SvREFCNT_dec (PL_warnhook);
922		933
923	SvREFCNT_dec (coro->saved_deffh);	934	SvREFCNT_dec (coro->saved_deffh);
924	SvREFCNT_dec (coro->throw);	935	SvREFCNT_dec (coro->rouse_cb);
		936	SvREFCNT_dec (coro->invoke_cb);
		937	SvREFCNT_dec (coro->invoke_av);
925		938
926	coro_destruct_stacks (aTHX);	939	coro_destruct_stacks (aTHX);
927	}	940	}
928		941
929	INLINE void	942	INLINE void
…		…
939	static int	952	static int
940	runops_trace (pTHX)	953	runops_trace (pTHX)
941	{	954	{
942	COP *oldcop = 0;	955	COP *oldcop = 0;
943	int oldcxix = -2;	956	int oldcxix = -2;
944	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */	957	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945	coro_cctx *cctx = coro->cctx;	958	coro_cctx *cctx = coro->cctx;
946		959
947	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	960	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948	{	961	{
949	PERL_ASYNC_CHECK ();	962	PERL_ASYNC_CHECK ();
…		…
1016	SAVETMPS;	1029	SAVETMPS;
1017	EXTEND (SP, 3);	1030	EXTEND (SP, 3);
1018	PUSHMARK (SP);	1031	PUSHMARK (SP);
1019	PUSHs (&PL_sv_yes);	1032	PUSHs (&PL_sv_yes);
1020	PUSHs (fullname);	1033	PUSHs (fullname);
1021	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1034	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022	PUTBACK;	1035	PUTBACK;
1023	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1036	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1037	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025	SPAGAIN;	1038	SPAGAIN;
1026	FREETMPS;	1039	FREETMPS;
…		…
1058		1071
1059	TAINT_NOT;	1072	TAINT_NOT;
1060	return 0;	1073	return 0;
1061	}	1074	}
1062		1075
		1076	static struct coro_cctx *cctx_ssl_cctx;
		1077	static struct CoroSLF cctx_ssl_frame;
		1078
1063	static void	1079	static void
1064	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)	1080	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065	{	1081	{
1066	ta->prev = (struct coro *)cctx;	1082	ta->prev = (struct coro *)cctx_ssl_cctx;
1067	ta->next = 0;	1083	ta->next = 0;
1068	}	1084	}
1069		1085
1070	/* inject a fake call to Coro::State::_cctx_init into the execution */	1086	static int
1071	/* _cctx_init should be careful, as it could be called at almost any time */	1087	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072	/* during execution of a perl program */	1088	{
1073	/* also initialises PL_top_env */	1089	*frame = cctx_ssl_frame;
		1090
		1091	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1092	}
		1093
		1094	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074	static void NOINLINE	1095	static void NOINLINE
1075	cctx_prepare (pTHX_ coro_cctx *cctx)	1096	cctx_prepare (pTHX_ coro_cctx *cctx)
1076	{	1097	{
1077	dSP;
1078	UNOP myop;
1079
1080	PL_top_env = &PL_start_env;	1098	PL_top_env = &PL_start_env;
1081		1099
1082	if (cctx->flags & CC_TRACE)	1100	if (cctx->flags & CC_TRACE)
1083	PL_runops = runops_trace;	1101	PL_runops = runops_trace;
1084		1102
1085	Zero (&myop, 1, UNOP);	1103	/* we already must be executing an SLF op, there is no other valid way
1086	myop.op_next = PL_op;	1104	* that can lead to creation of a new cctx */
1087	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1105	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1106	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088		1107
1089	PUSHMARK (SP);	1108	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090	EXTEND (SP, 2);	1109	cctx_ssl_cctx = cctx;
1091	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1110	cctx_ssl_frame = slf_frame;
1092	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1111
1093	PUTBACK;	1112	slf_frame.prepare = slf_prepare_set_stacklevel;
1094	PL_op = (OP *)&myop;	1113	slf_frame.check = slf_check_set_stacklevel;
1095	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096	SPAGAIN;
1097	}	1114	}
1098		1115
1099	/* the tail of transfer: execute stuff we can only do after a transfer */	1116	/* the tail of transfer: execute stuff we can only do after a transfer */
1100	INLINE void	1117	INLINE void
1101	transfer_tail (pTHX)	1118	transfer_tail (pTHX)
1102	{	1119	{
1103	struct coro *next = (struct coro *)transfer_next;
1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107	free_coro_mortal (aTHX);	1120	free_coro_mortal (aTHX);
1108	UNLOCK;
1109
1110	if (expect_false (next->throw))
1111	{
1112	SV *exception = sv_2mortal (next->throw);
1113
1114	next->throw = 0;
1115	sv_setsv (ERRSV, exception);
1116	croak (0);
1117	}
1118	}	1121	}
1119		1122
1120	/*	1123	/*
1121	* this is a _very_ stripped down perl interpreter ;)	1124	* this is a _very_ stripped down perl interpreter ;)
1122	*/	1125	*/
…		…
1129	# endif	1132	# endif
1130	#endif	1133	#endif
1131	{	1134	{
1132	dTHX;	1135	dTHX;
1133		1136
1134	/* we are the alternative tail to pp_set_stacklevel */	1137	/* normally we would need to skip the entersub here */
1135	/* so do the same things here */	1138	/* not doing so will re-execute it, which is exactly what we want */
1136	SLF_TAIL;
1137
1138	/* we now skip the op that did lead to transfer() */
1139	PL_op = PL_op->op_next;	1139	/* PL_nop = PL_nop->op_next */
1140		1140
1141	/* inject a fake subroutine call to cctx_init */	1141	/* inject a fake subroutine call to cctx_init */
1142	cctx_prepare (aTHX_ (coro_cctx *)arg);	1142	cctx_prepare (aTHX_ (coro_cctx *)arg);
1143		1143
1144	/* cctx_run is the alternative tail of transfer() */	1144	/* cctx_run is the alternative tail of transfer() */
1145	transfer_tail (aTHX);	1145	transfer_tail (aTHX);
1146		1146
1147	/* somebody or something will hit me for both perl_run and PL_restartop */	1147	/* somebody or something will hit me for both perl_run and PL_restartop */
1148	PL_restartop = PL_op;	1148	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1149	perl_run (PL_curinterp);
		1150	/*
		1151	* Unfortunately, there is no way to get at the return values of the
		1152	* coro body here, as perl_run destroys these
		1153	*/
1150		1154
1151	/*	1155	/*
1152	* If perl-run returns we assume exit() was being called or the coro	1156	* If perl-run returns we assume exit() was being called or the coro
1153	* fell off the end, which seems to be the only valid (non-bug)	1157	* fell off the end, which seems to be the only valid (non-bug)
1154	* reason for perl_run to return. We try to exit by jumping to the	1158	* reason for perl_run to return. We try to exit by jumping to the
…		…
1305	/** coroutine switching *****************************************************/	1309	/** coroutine switching *****************************************************/
1306		1310
1307	static void	1311	static void
1308	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1312	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309	{	1313	{
		1314	/* TODO: throwing up here is considered harmful */
		1315
1310	if (expect_true (prev != next))	1316	if (expect_true (prev != next))
1311	{	1317	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1318	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1319	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1320
1315	if (expect_false (next->flags & CF_RUNNING))	1321	if (expect_false (next->flags & CF_RUNNING))
1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1322	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1323
1318	if (expect_false (next->flags & CF_DESTROYED))	1324	if (expect_false (next->flags & CF_DESTROYED))
1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1325	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1326
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1327	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1328	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1329	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1330	#endif
1325	}	1331	}
1326	}	1332	}
1327		1333
1328	/* always use the TRANSFER macro */	1334	/* always use the TRANSFER macro */
1329	static void NOINLINE	1335	static void NOINLINE /* noinline so we have a fixed stackframe */
1330	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1336	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331	{	1337	{
1332	dSTACKLEVEL;	1338	dSTACKLEVEL;
1333		1339
1334	/* sometimes transfer is only called to set idle_sp */	1340	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1341	if (expect_false (!next))
1336	{	1342	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1343	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1344	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339	}	1345	}
1340	else if (expect_true (prev != next))	1346	else if (expect_true (prev != next))
1341	{	1347	{
1342	coro_cctx *prev__cctx;	1348	coro_cctx *prev__cctx;
…		…
1349	prev->flags |= CF_RUNNING;	1355	prev->flags |= CF_RUNNING;
1350	}	1356	}
1351		1357
1352	prev->flags &= ~CF_RUNNING;	1358	prev->flags &= ~CF_RUNNING;
1353	next->flags |= CF_RUNNING;	1359	next->flags |= CF_RUNNING;
1354
1355	LOCK;
1356		1360
1357	/* first get rid of the old state */	1361	/* first get rid of the old state */
1358	save_perl (aTHX_ prev);	1362	save_perl (aTHX_ prev);
1359		1363
1360	if (expect_false (next->flags & CF_NEW))	1364	if (expect_false (next->flags & CF_NEW))
…		…
1369		1373
1370	prev__cctx = prev->cctx;	1374	prev__cctx = prev->cctx;
1371		1375
1372	/* possibly untie and reuse the cctx */	1376	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1377	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1378	prev__cctx->idle_sp == STACKLEVEL
1375	&& !(prev__cctx->flags & CC_TRACE)	1379	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1380	&& !force_cctx
1377	))	1381	))
1378	{	1382	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1383	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1393	++next->usecount;	1397	++next->usecount;
1394		1398
1395	if (expect_true (!next->cctx))	1399	if (expect_true (!next->cctx))
1396	next->cctx = cctx_get (aTHX);	1400	next->cctx = cctx_get (aTHX);
1397		1401
1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399	transfer_next = next;
1400
1401	if (expect_false (prev__cctx != next->cctx))	1402	if (expect_false (prev__cctx != next->cctx))
1402	{	1403	{
1403	prev__cctx->top_env = PL_top_env;	1404	prev__cctx->top_env = PL_top_env;
1404	PL_top_env = next->cctx->top_env;	1405	PL_top_env = next->cctx->top_env;
1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1406	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1418	coro_state_destroy (pTHX_ struct coro *coro)	1419	coro_state_destroy (pTHX_ struct coro *coro)
1419	{	1420	{
1420	if (coro->flags & CF_DESTROYED)	1421	if (coro->flags & CF_DESTROYED)
1421	return 0;	1422	return 0;
1422		1423
		1424	if (coro->on_destroy)
		1425	coro->on_destroy (aTHX_ coro);
		1426
1423	coro->flags |= CF_DESTROYED;	1427	coro->flags |= CF_DESTROYED;
1424		1428
1425	if (coro->flags & CF_READY)	1429	if (coro->flags & CF_READY)
1426	{	1430	{
1427	/* reduce nready, as destroying a ready coro effectively unreadies it */	1431	/* reduce nready, as destroying a ready coro effectively unreadies it */
1428	/* alternative: look through all ready queues and remove the coro */	1432	/* alternative: look through all ready queues and remove the coro */
1429	LOCK;
1430	--coro_nready;	1433	--coro_nready;
1431	UNLOCK;
1432	}	1434	}
1433	else	1435	else
1434	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1436	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435		1437
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1438	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1439	{
1438	struct coro temp;	1440	struct coro temp;
1439		1441
1440	if (coro->flags & CF_RUNNING)	1442	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1443
1443	save_perl (aTHX_ &temp);	1444	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1445	load_perl (aTHX_ coro);
1445		1446
1446	coro_destruct (aTHX_ coro);	1447	coro_destruct (aTHX_ coro);
…		…
1449		1450
1450	coro->slot = 0;	1451	coro->slot = 0;
1451	}	1452	}
1452		1453
1453	cctx_destroy (coro->cctx);	1454	cctx_destroy (coro->cctx);
		1455	SvREFCNT_dec (coro->startcv);
1454	SvREFCNT_dec (coro->args);	1456	SvREFCNT_dec (coro->args);
		1457	SvREFCNT_dec (CORO_THROW);
1455		1458
1456	if (coro->next) coro->next->prev = coro->prev;	1459	if (coro->next) coro->next->prev = coro->prev;
1457	if (coro->prev) coro->prev->next = coro->next;	1460	if (coro->prev) coro->prev->next = coro->next;
1458	if (coro == coro_first) coro_first = coro->next;	1461	if (coro == coro_first) coro_first = coro->next;
1459		1462
…		…
1497	# define MGf_DUP 0	1500	# define MGf_DUP 0
1498	#endif	1501	#endif
1499	};	1502	};
1500		1503
1501	static void	1504	static void
1502	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1505	prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503	{	1506	{
1504	ta->prev = SvSTATE (prev_sv);	1507	ta->prev = SvSTATE (prev_sv);
1505	ta->next = SvSTATE (next_sv);	1508	ta->next = SvSTATE (next_sv);
1506	TRANSFER_CHECK (*ta);	1509	TRANSFER_CHECK (*ta);
1507	}	1510	}
1508		1511
1509	static void	1512	static void
1510	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)	1513	api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511	{	1514	{
1512	struct transfer_args ta;	1515	struct coro_transfer_args ta;
1513		1516
1514	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1517	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1515	TRANSFER (ta, 1);	1518	TRANSFER (ta, 1);
1516	}	1519	}
1517		1520
		1521	/*****************************************************************************/
		1522	/* gensub: simple closure generation utility */
		1523
		1524	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1525
		1526	/* create a closure from XS, returns a code reference */
		1527	/* the arg can be accessed via GENSUB_ARG from the callback */
		1528	/* the callback must use dXSARGS/XSRETURN */
		1529	static SV *
		1530	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1531	{
		1532	CV *cv = (CV *)newSV (0);
		1533
		1534	sv_upgrade ((SV *)cv, SVt_PVCV);
		1535
		1536	CvANON_on (cv);
		1537	CvISXSUB_on (cv);
		1538	CvXSUB (cv) = xsub;
		1539	GENSUB_ARG = arg;
		1540
		1541	return newRV_noinc ((SV *)cv);
		1542	}
		1543
1518	/** Coro ********************************************************************/	1544	/** Coro ********************************************************************/
1519		1545
1520	static void	1546	INLINE void
1521	coro_enq (pTHX_ SV *coro_sv)	1547	coro_enq (pTHX_ struct coro *coro)
1522	{	1548	{
1523	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1549	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524	}	1550	}
1525		1551
1526	static SV *	1552	INLINE SV *
1527	coro_deq (pTHX)	1553	coro_deq (pTHX)
1528	{	1554	{
1529	int prio;	1555	int prio;
1530		1556
1531	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1557	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1550	if (coro->flags & CF_READY)	1576	if (coro->flags & CF_READY)
1551	return 0;	1577	return 0;
1552		1578
1553	coro->flags |= CF_READY;	1579	coro->flags |= CF_READY;
1554		1580
1555	LOCK;
1556
1557	sv_hook = coro_nready ? 0 : coro_readyhook;	1581	sv_hook = coro_nready ? 0 : coro_readyhook;
1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1582	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559		1583
1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1584	coro_enq (aTHX_ coro);
1561	++coro_nready;	1585	++coro_nready;
1562		1586
1563	UNLOCK;
1564
1565	if (sv_hook)	1587	if (sv_hook)
1566	{	1588	{
1567	dSP;	1589	dSP;
1568		1590
1569	ENTER;	1591	ENTER;
1570	SAVETMPS;	1592	SAVETMPS;
1571		1593
1572	PUSHMARK (SP);	1594	PUSHMARK (SP);
1573	PUTBACK;	1595	PUTBACK;
1574	call_sv (sv_hook, G_DISCARD);	1596	call_sv (sv_hook, G_VOID | G_DISCARD);
1575	SPAGAIN;
1576		1597
1577	FREETMPS;	1598	FREETMPS;
1578	LEAVE;	1599	LEAVE;
1579	}	1600	}
1580		1601
…		…
1589	{	1610	{
1590	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1611	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1591	}	1612	}
1592		1613
1593	INLINE void	1614	INLINE void
1594	prepare_schedule (pTHX_ struct transfer_args *ta)	1615	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1595	{	1616	{
1596	SV *prev_sv, *next_sv;	1617	SV *prev_sv, *next_sv;
1597		1618
1598	for (;;)	1619	for (;;)
1599	{	1620	{
1600	LOCK;
1601	next_sv = coro_deq (aTHX);	1621	next_sv = coro_deq (aTHX);
1602		1622
1603	/* nothing to schedule: call the idle handler */	1623	/* nothing to schedule: call the idle handler */
1604	if (expect_false (!next_sv))	1624	if (expect_false (!next_sv))
1605	{	1625	{
1606	dSP;	1626	dSP;
1607	UNLOCK;
1608		1627
1609	ENTER;	1628	ENTER;
1610	SAVETMPS;	1629	SAVETMPS;
1611		1630
1612	PUSHMARK (SP);	1631	PUSHMARK (SP);
1613	PUTBACK;	1632	PUTBACK;
1614	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1633	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1615	SPAGAIN;
1616		1634
1617	FREETMPS;	1635	FREETMPS;
1618	LEAVE;	1636	LEAVE;
1619	continue;	1637	continue;
1620	}	1638	}
1621		1639
1622	ta->next = SvSTATE (next_sv);	1640	ta->next = SvSTATE_hv (next_sv);
1623		1641
1624	/* cannot transfer to destroyed coros, skip and look for next */	1642	/* cannot transfer to destroyed coros, skip and look for next */
1625	if (expect_false (ta->next->flags & CF_DESTROYED))	1643	if (expect_false (ta->next->flags & CF_DESTROYED))
1626	{	1644	{
1627	UNLOCK;
1628	SvREFCNT_dec (next_sv);	1645	SvREFCNT_dec (next_sv);
1629	/* coro_nready has already been taken care of by destroy */	1646	/* coro_nready has already been taken care of by destroy */
1630	continue;	1647	continue;
1631	}	1648	}
1632		1649
1633	--coro_nready;	1650	--coro_nready;
1634	UNLOCK;
1635	break;	1651	break;
1636	}	1652	}
1637		1653
1638	/* free this only after the transfer */	1654	/* free this only after the transfer */
1639	prev_sv = SvRV (coro_current);	1655	prev_sv = SvRV (coro_current);
1640	ta->prev = SvSTATE (prev_sv);	1656	ta->prev = SvSTATE_hv (prev_sv);
1641	TRANSFER_CHECK (*ta);	1657	TRANSFER_CHECK (*ta);
1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1658	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643	ta->next->flags &= ~CF_READY;	1659	ta->next->flags &= ~CF_READY;
1644	SvRV_set (coro_current, next_sv);	1660	SvRV_set (coro_current, next_sv);
1645		1661
1646	LOCK;
1647	free_coro_mortal (aTHX);	1662	free_coro_mortal (aTHX);
1648	coro_mortal = prev_sv;	1663	coro_mortal = prev_sv;
1649	UNLOCK;
1650	}	1664	}
1651		1665
1652	INLINE void	1666	INLINE void
1653	prepare_cede (pTHX_ struct transfer_args *ta)	1667	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654	{	1668	{
1655	api_ready (aTHX_ coro_current);	1669	api_ready (aTHX_ coro_current);
1656	prepare_schedule (aTHX_ ta);	1670	prepare_schedule (aTHX_ ta);
1657	}	1671	}
1658		1672
1659	static void	1673	INLINE void
1660	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1674	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1661	{	1675	{
1662	SV *prev = SvRV (coro_current);	1676	SV *prev = SvRV (coro_current);
1663		1677
1664	if (coro_nready)	1678	if (coro_nready)
1665	{	1679	{
1666	prepare_schedule (aTHX_ ta);	1680	prepare_schedule (aTHX_ ta);
1667	api_ready (aTHX_ prev);	1681	api_ready (aTHX_ prev);
1668	}	1682	}
1669	else	1683	else
1670	ta->prev = ta->next = SvSTATE (prev);	1684	prepare_nop (aTHX_ ta);
1671	}	1685	}
1672		1686
1673	static void	1687	static void
1674	api_schedule (pTHX)	1688	api_schedule (pTHX)
1675	{	1689	{
1676	struct transfer_args ta;	1690	struct coro_transfer_args ta;
1677		1691
1678	prepare_schedule (aTHX_ &ta);	1692	prepare_schedule (aTHX_ &ta);
1679	TRANSFER (ta, 1);	1693	TRANSFER (ta, 1);
1680	}	1694	}
1681		1695
1682	static int	1696	static int
1683	api_cede (pTHX)	1697	api_cede (pTHX)
1684	{	1698	{
1685	struct transfer_args ta;	1699	struct coro_transfer_args ta;
1686		1700
1687	prepare_cede (aTHX_ &ta);	1701	prepare_cede (aTHX_ &ta);
1688		1702
1689	if (expect_true (ta.prev != ta.next))	1703	if (expect_true (ta.prev != ta.next))
1690	{	1704	{
…		…
1698	static int	1712	static int
1699	api_cede_notself (pTHX)	1713	api_cede_notself (pTHX)
1700	{	1714	{
1701	if (coro_nready)	1715	if (coro_nready)
1702	{	1716	{
1703	struct transfer_args ta;	1717	struct coro_transfer_args ta;
1704		1718
1705	prepare_cede_notself (aTHX_ &ta);	1719	prepare_cede_notself (aTHX_ &ta);
1706	TRANSFER (ta, 1);	1720	TRANSFER (ta, 1);
1707	return 1;	1721	return 1;
1708	}	1722	}
…		…
1718	if (flags & CC_TRACE)	1732	if (flags & CC_TRACE)
1719	{	1733	{
1720	if (!coro->cctx)	1734	if (!coro->cctx)
1721	coro->cctx = cctx_new_run ();	1735	coro->cctx = cctx_new_run ();
1722	else if (!(coro->cctx->flags & CC_TRACE))	1736	else if (!(coro->cctx->flags & CC_TRACE))
1723	croak ("cannot enable tracing on coroutine with custom stack");	1737	croak ("cannot enable tracing on coroutine with custom stack,");
1724		1738
1725	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1739	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726	}	1740	}
1727	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1741	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728	{	1742	{
…		…
1733	else	1747	else
1734	coro->slot->runops = RUNOPS_DEFAULT;	1748	coro->slot->runops = RUNOPS_DEFAULT;
1735	}	1749	}
1736	}	1750	}
1737		1751
1738	#if 0	1752	/*****************************************************************************/
		1753	/* async pool handler */
		1754
1739	static int	1755	static int
1740	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)	1756	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1741	{	1757	{
1742	AV *padlist;	1758	HV *hv = (HV *)SvRV (coro_current);
1743	AV *av = (AV *)mg->mg_obj;	1759	struct coro *coro = (struct coro *)frame->data;
1744		1760
1745	abort ();	1761	if (!coro->invoke_cb)
		1762	return 1; /* loop till we have invoke */
		1763	else
		1764	{
		1765	hv_store (hv, "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1767
		1768	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1769
		1770	{
		1771	dSP;
		1772	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1773	PUTBACK;
		1774	}
		1775
		1776	SvREFCNT_dec (GvAV (PL_defgv));
		1777	GvAV (PL_defgv) = coro->invoke_av;
		1778	coro->invoke_av = 0;
		1779
		1780	return 0;
		1781	}
		1782	}
		1783
		1784	static void
		1785	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1786	{
		1787	HV *hv = (HV *)SvRV (coro_current);
		1788	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1789
		1790	if (expect_true (coro->saved_deffh))
		1791	{
		1792	/* subsequent iteration */
		1793	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1794	coro->saved_deffh = 0;
		1795
		1796	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1797	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1798	{
		1799	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1800	coro->invoke_av = newAV ();
		1801
		1802	frame->prepare = prepare_nop;
		1803	}
		1804	else
		1805	{
		1806	av_clear (GvAV (PL_defgv));
		1807	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1808
		1809	coro->prio = 0;
		1810
		1811	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1812	api_trace (aTHX_ coro_current, 0);
		1813
		1814	frame->prepare = prepare_schedule;
		1815	av_push (av_async_pool, SvREFCNT_inc (hv));
		1816	}
		1817	}
		1818	else
		1819	{
		1820	/* first iteration, simply fall through */
		1821	frame->prepare = prepare_nop;
		1822	}
		1823
		1824	frame->check = slf_check_pool_handler;
		1825	frame->data = (void *)coro;
		1826	}
		1827
		1828	/*****************************************************************************/
		1829	/* rouse callback */
		1830
		1831	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1832
		1833	static void
		1834	coro_rouse_callback (pTHX_ CV *cv)
		1835	{
		1836	dXSARGS;
		1837	SV *data = (SV *)GENSUB_ARG;
		1838
		1839	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1840	{
		1841	/* first call, set args */
		1842	AV *av = newAV ();
		1843	SV *coro = SvRV (data);
		1844
		1845	SvRV_set (data, (SV *)av);
		1846	api_ready (aTHX_ coro);
		1847	SvREFCNT_dec (coro);
		1848
		1849	/* better take a full copy of the arguments */
		1850	while (items--)
		1851	av_store (av, items, newSVsv (ST (items)));
		1852	}
		1853
		1854	XSRETURN_EMPTY;
		1855	}
		1856
		1857	static int
		1858	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1859	{
		1860	SV *data = (SV *)frame->data;
		1861
		1862	if (CORO_THROW)
		1863	return 0;
		1864
		1865	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1866	return 1;
		1867
		1868	/* now push all results on the stack */
		1869	{
		1870	dSP;
		1871	AV *av = (AV *)SvRV (data);
		1872	int i;
		1873
		1874	EXTEND (SP, AvFILLp (av) + 1);
		1875	for (i = 0; i <= AvFILLp (av); ++i)
		1876	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1877
		1878	/* we have stolen the elements, so ste length to zero and free */
		1879	AvFILLp (av) = -1;
		1880	av_undef (av);
		1881
		1882	PUTBACK;
		1883	}
1746		1884
1747	return 0;	1885	return 0;
1748	}	1886	}
1749		1887
1750	static MGVTBL coro_gensub_vtbl = {	1888	static void
1751	0, 0, 0, 0,	1889	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1752	coro_gensub_free	1890	{
1753	};	1891	SV *cb;
1754	#endif	1892
		1893	if (items)
		1894	cb = arg [0];
		1895	else
		1896	{
		1897	struct coro *coro = SvSTATE_current;
		1898
		1899	if (!coro->rouse_cb)
		1900	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1901
		1902	cb = sv_2mortal (coro->rouse_cb);
		1903	coro->rouse_cb = 0;
		1904	}
		1905
		1906	if (!SvROK (cb)
		1907	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1908	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1909	croak ("Coro::rouse_wait called with illegal callback argument,");
		1910
		1911	{
		1912	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1913	SV *data = (SV *)GENSUB_ARG;
		1914
		1915	frame->data = (void *)data;
		1916	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		1917	frame->check = slf_check_rouse_wait;
		1918	}
		1919	}
		1920
		1921	static SV *
		1922	coro_new_rouse_cb (pTHX)
		1923	{
		1924	HV *hv = (HV *)SvRV (coro_current);
		1925	struct coro *coro = SvSTATE_hv (hv);
		1926	SV *data = newRV_inc ((SV *)hv);
		1927	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		1928
		1929	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		1930	SvREFCNT_dec (data); /* magicext increases the refcount */
		1931
		1932	SvREFCNT_dec (coro->rouse_cb);
		1933	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		1934
		1935	return cb;
		1936	}
		1937
		1938	/*****************************************************************************/
		1939	/* schedule-like-function opcode (SLF) */
		1940
		1941	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1942	static const CV *slf_cv;
		1943	static SV **slf_argv;
		1944	static int slf_argc, slf_arga; /* count, allocated */
		1945	static I32 slf_ax; /* top of stack, for restore */
		1946
		1947	/* this restores the stack in the case we patched the entersub, to */
		1948	/* recreate the stack frame as perl will on following calls */
		1949	/* since entersub cleared the stack */
		1950	static OP *
		1951	pp_restore (pTHX)
		1952	{
		1953	int i;
		1954	SV **SP = PL_stack_base + slf_ax;
		1955
		1956	PUSHMARK (SP);
		1957
		1958	EXTEND (SP, slf_argc + 1);
		1959
		1960	for (i = 0; i < slf_argc; ++i)
		1961	PUSHs (sv_2mortal (slf_argv [i]));
		1962
		1963	PUSHs ((SV *)CvGV (slf_cv));
		1964
		1965	RETURNOP (slf_restore.op_first);
		1966	}
		1967
		1968	static void
		1969	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1970	{
		1971	SV **arg = (SV **)slf_frame.data;
		1972
		1973	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1974	}
		1975
		1976	static void
		1977	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1978	{
		1979	if (items != 2)
		1980	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1981
		1982	frame->prepare = slf_prepare_transfer;
		1983	frame->check = slf_check_nop;
		1984	frame->data = (void *)arg; /* let's hope it will stay valid */
		1985	}
		1986
		1987	static void
		1988	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1989	{
		1990	frame->prepare = prepare_schedule;
		1991	frame->check = slf_check_nop;
		1992	}
		1993
		1994	static void
		1995	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1996	{
		1997	frame->prepare = prepare_cede;
		1998	frame->check = slf_check_nop;
		1999	}
		2000
		2001	static void
		2002	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2003	{
		2004	frame->prepare = prepare_cede_notself;
		2005	frame->check = slf_check_nop;
		2006	}
		2007
		2008	/*
		2009	* these not obviously related functions are all rolled into one
		2010	* function to increase chances that they all will call transfer with the same
		2011	* stack offset
		2012	* SLF stands for "schedule-like-function".
		2013	*/
		2014	static OP *
		2015	pp_slf (pTHX)
		2016	{
		2017	I32 checkmark; /* mark SP to see how many elements check has pushed */
		2018
		2019	/* set up the slf frame, unless it has already been set-up */
		2020	/* the latter happens when a new coro has been started */
		2021	/* or when a new cctx was attached to an existing coroutine */
		2022	if (expect_true (!slf_frame.prepare))
		2023	{
		2024	/* first iteration */
		2025	dSP;
		2026	SV **arg = PL_stack_base + TOPMARK + 1;
		2027	int items = SP - arg; /* args without function object */
		2028	SV *gv = *sp;
		2029
		2030	/* do a quick consistency check on the "function" object, and if it isn't */
		2031	/* for us, divert to the real entersub */
		2032	if (SvTYPE (gv) != SVt_PVGV
		2033	|| !GvCV (gv)
		2034	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		2035	return PL_ppaddr[OP_ENTERSUB](aTHX);
		2036
		2037	if (!(PL_op->op_flags & OPf_STACKED))
		2038	{
		2039	/* ampersand-form of call, use @_ instead of stack */
		2040	AV *av = GvAV (PL_defgv);
		2041	arg = AvARRAY (av);
		2042	items = AvFILLp (av) + 1;
		2043	}
		2044
		2045	/* now call the init function, which needs to set up slf_frame */
		2046	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		2047	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		2048
		2049	/* pop args */
		2050	SP = PL_stack_base + POPMARK;
		2051
		2052	PUTBACK;
		2053	}
		2054
		2055	/* now that we have a slf_frame, interpret it! */
		2056	/* we use a callback system not to make the code needlessly */
		2057	/* complicated, but so we can run multiple perl coros from one cctx */
		2058
		2059	do
		2060	{
		2061	struct coro_transfer_args ta;
		2062
		2063	slf_frame.prepare (aTHX_ &ta);
		2064	TRANSFER (ta, 0);
		2065
		2066	checkmark = PL_stack_sp - PL_stack_base;
		2067	}
		2068	while (slf_frame.check (aTHX_ &slf_frame));
		2069
		2070	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		2071
		2072	/* exception handling */
		2073	if (expect_false (CORO_THROW))
		2074	{
		2075	SV *exception = sv_2mortal (CORO_THROW);
		2076
		2077	CORO_THROW = 0;
		2078	sv_setsv (ERRSV, exception);
		2079	croak (0);
		2080	}
		2081
		2082	/* return value handling - mostly like entersub */
		2083	/* make sure we put something on the stack in scalar context */
		2084	if (GIMME_V == G_SCALAR)
		2085	{
		2086	dSP;
		2087	SV **bot = PL_stack_base + checkmark;
		2088
		2089	if (sp == bot) /* too few, push undef */
		2090	bot [1] = &PL_sv_undef;
		2091	else if (sp != bot + 1) /* too many, take last one */
		2092	bot [1] = *sp;
		2093
		2094	SP = bot + 1;
		2095
		2096	PUTBACK;
		2097	}
		2098
		2099	return NORMAL;
		2100	}
		2101
		2102	static void
		2103	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2104	{
		2105	int i;
		2106	SV **arg = PL_stack_base + ax;
		2107	int items = PL_stack_sp - arg + 1;
		2108
		2109	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2110
		2111	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2112	&& PL_op->op_ppaddr != pp_slf)
		2113	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2114
		2115	CvFLAGS (cv) |= CVf_SLF;
		2116	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2117	slf_cv = cv;
		2118
		2119	/* we patch the op, and then re-run the whole call */
		2120	/* we have to put the same argument on the stack for this to work */
		2121	/* and this will be done by pp_restore */
		2122	slf_restore.op_next = (OP *)&slf_restore;
		2123	slf_restore.op_type = OP_CUSTOM;
		2124	slf_restore.op_ppaddr = pp_restore;
		2125	slf_restore.op_first = PL_op;
		2126
		2127	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2128
		2129	if (PL_op->op_flags & OPf_STACKED)
		2130	{
		2131	if (items > slf_arga)
		2132	{
		2133	slf_arga = items;
		2134	free (slf_argv);
		2135	slf_argv = malloc (slf_arga * sizeof (SV *));
		2136	}
		2137
		2138	slf_argc = items;
		2139
		2140	for (i = 0; i < items; ++i)
		2141	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2142	}
		2143	else
		2144	slf_argc = 0;
		2145
		2146	PL_op->op_ppaddr = pp_slf;
		2147	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		2148
		2149	PL_op = (OP *)&slf_restore;
		2150	}
1755		2151
1756	/*****************************************************************************/	2152	/*****************************************************************************/
1757	/* PerlIO::cede */	2153	/* PerlIO::cede */
1758		2154
1759	typedef struct	2155	typedef struct
…		…
1827	PerlIOBuf_get_cnt,	2223	PerlIOBuf_get_cnt,
1828	PerlIOBuf_set_ptrcnt,	2224	PerlIOBuf_set_ptrcnt,
1829	};	2225	};
1830		2226
1831	/*****************************************************************************/	2227	/*****************************************************************************/
		2228	/* Coro::Semaphore & Coro::Signal */
1832		2229
1833	static const CV *slf_cv; /* for quick consistency check */
1834
1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836	static SV *slf_arg0;
1837	static SV *slf_arg1;
1838
1839	/* this restores the stack in the case we patched the entersub, to */
1840	/* recreate the stack frame as perl will on following calls */
1841	/* since entersub cleared the stack */
1842	static OP *	2230	static SV *
1843	pp_restore (pTHX)	2231	coro_waitarray_new (pTHX_ int count)
1844	{	2232	{
1845	dSP;	2233	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2234	AV *av = newAV ();
		2235	SV **ary;
1846		2236
		2237	/* unfortunately, building manually saves memory */
		2238	Newx (ary, 2, SV *);
		2239	AvALLOC (av) = ary;
		2240	/*AvARRAY (av) = ary;*/
		2241	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2242	AvMAX (av) = 1;
		2243	AvFILLp (av) = 0;
		2244	ary [0] = newSViv (count);
		2245
		2246	return newRV_noinc ((SV *)av);
		2247	}
		2248
		2249	/* semaphore */
		2250
		2251	static void
		2252	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2253	{
		2254	SV *count_sv = AvARRAY (av)[0];
		2255	IV count = SvIVX (count_sv);
		2256
		2257	count += adjust;
		2258	SvIVX (count_sv) = count;
		2259
		2260	/* now wake up as many waiters as are expected to lock */
		2261	while (count > 0 && AvFILLp (av) > 0)
		2262	{
		2263	SV *cb;
		2264
		2265	/* swap first two elements so we can shift a waiter */
		2266	AvARRAY (av)[0] = AvARRAY (av)[1];
		2267	AvARRAY (av)[1] = count_sv;
		2268	cb = av_shift (av);
		2269
		2270	if (SvOBJECT (cb))
		2271	{
		2272	api_ready (aTHX_ cb);
		2273	--count;
		2274	}
		2275	else if (SvTYPE (cb) == SVt_PVCV)
		2276	{
		2277	dSP;
1847	PUSHMARK (SP);	2278	PUSHMARK (SP);
		2279	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2280	PUTBACK;
		2281	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2282	}
1848		2283
1849	EXTEND (SP, 3);	2284	SvREFCNT_dec (cb);
1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	2285	}
1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852	PUSHs ((SV *)CvGV (slf_cv));
1853
1854	RETURNOP (slf_restore.op_first);
1855	}	2286	}
1856		2287
1857	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */	2288	static void
		2289	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2290	{
		2291	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2292	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2293	}
1858		2294
1859	enum {	2295	static int
1860	CORO_SLF_CUSTOM = 0,	2296	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
1861	CORO_SLF_SET_STACKLEVEL = 1,	2297	{
1862	CORO_SLF_TRANSFER = 2	2298	AV *av = (AV *)frame->data;
		2299	SV *count_sv = AvARRAY (av)[0];
		2300
		2301	/* if we are about to throw, don't actually acquire the lock, just throw */
		2302	if (CORO_THROW)
		2303	return 0;
		2304	else if (SvIVX (count_sv) > 0)
		2305	{
		2306	SvSTATE_current->on_destroy = 0;
		2307
		2308	if (acquire)
		2309	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2310	else
		2311	coro_semaphore_adjust (aTHX_ av, 0);
		2312
		2313	return 0;
		2314	}
		2315	else
		2316	{
		2317	int i;
		2318	/* if we were woken up but can't down, we look through the whole */
		2319	/* waiters list and only add us if we aren't in there already */
		2320	/* this avoids some degenerate memory usage cases */
		2321
		2322	for (i = 1; i <= AvFILLp (av); ++i)
		2323	if (AvARRAY (av)[i] == SvRV (coro_current))
		2324	return 1;
		2325
		2326	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2327	return 1;
		2328	}
		2329	}
		2330
		2331	static int
		2332	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2333	{
		2334	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2335	}
		2336
		2337	static int
		2338	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2339	{
		2340	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2341	}
		2342
		2343	static void
		2344	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2345	{
		2346	AV *av = (AV *)SvRV (arg [0]);
		2347
		2348	if (SvIVX (AvARRAY (av)[0]) > 0)
		2349	{
		2350	frame->data = (void *)av;
		2351	frame->prepare = prepare_nop;
		2352	}
		2353	else
		2354	{
		2355	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2356
		2357	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
		2358	frame->prepare = prepare_schedule;
		2359
		2360	/* to avoid race conditions when a woken-up coro gets terminated */
		2361	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2362	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2363	}
		2364	}
		2365
		2366	static void
		2367	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2368	{
		2369	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2370	frame->check = slf_check_semaphore_down;
		2371	}
		2372
		2373	static void
		2374	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2375	{
		2376	if (items >= 2)
		2377	{
		2378	/* callback form */
		2379	AV *av = (AV *)SvRV (arg [0]);
		2380	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
		2381
		2382	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
		2383
		2384	if (SvIVX (AvARRAY (av)[0]) > 0)
		2385	coro_semaphore_adjust (aTHX_ av, 0);
		2386
		2387	frame->prepare = prepare_nop;
		2388	frame->check = slf_check_nop;
		2389	}
		2390	else
		2391	{
		2392	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2393	frame->check = slf_check_semaphore_wait;
		2394	}
		2395	}
		2396
		2397	/* signal */
		2398
		2399	static void
		2400	coro_signal_wake (pTHX_ AV *av, int count)
		2401	{
		2402	SvIVX (AvARRAY (av)[0]) = 0;
		2403
		2404	/* now signal count waiters */
		2405	while (count > 0 && AvFILLp (av) > 0)
		2406	{
		2407	SV *cb;
		2408
		2409	/* swap first two elements so we can shift a waiter */
		2410	cb = AvARRAY (av)[0];
		2411	AvARRAY (av)[0] = AvARRAY (av)[1];
		2412	AvARRAY (av)[1] = cb;
		2413
		2414	cb = av_shift (av);
		2415
		2416	api_ready (aTHX_ cb);
		2417	sv_setiv (cb, 0); /* signal waiter */
		2418	SvREFCNT_dec (cb);
		2419
		2420	--count;
		2421	}
		2422	}
		2423
		2424	static int
		2425	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2426	{
		2427	/* if we are about to throw, also stop waiting */
		2428	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2429	}
		2430
		2431	static void
		2432	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2433	{
		2434	AV *av = (AV *)SvRV (arg [0]);
		2435
		2436	if (SvIVX (AvARRAY (av)[0]))
		2437	{
		2438	SvIVX (AvARRAY (av)[0]) = 0;
		2439	frame->prepare = prepare_nop;
		2440	frame->check = slf_check_nop;
		2441	}
		2442	else
		2443	{
		2444	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2445
		2446	av_push (av, waiter);
		2447
		2448	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2449	frame->prepare = prepare_schedule;
		2450	frame->check = slf_check_signal_wait;
		2451	}
		2452	}
		2453
		2454	/*****************************************************************************/
		2455	/* Coro::AIO */
		2456
		2457	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
		2458
		2459	/* helper storage struct */
		2460	struct io_state
		2461	{
		2462	int errorno;
		2463	I32 laststype; /* U16 in 5.10.0 */
		2464	int laststatval;
		2465	Stat_t statcache;
1863	};	2466	};
1864		2467
1865	/* declare prototype */	2468	static void
1866	XS(XS_Coro__State__set_stacklevel);	2469	coro_aio_callback (pTHX_ CV *cv)
1867
1868	/*
1869	* these not obviously related functions are all rolled into one
1870	* function to increase chances that they all will call transfer with the same
1871	* stack offset
1872	* SLF stands for "schedule-like-function".
1873	*/
1874	static OP *
1875	pp_slf (pTHX)
1876	{	2470	{
		2471	dXSARGS;
		2472	AV *state = (AV *)GENSUB_ARG;
		2473	SV *coro = av_pop (state);
		2474	SV *data_sv = newSV (sizeof (struct io_state));
		2475
		2476	av_extend (state, items - 1);
		2477
		2478	sv_upgrade (data_sv, SVt_PV);
		2479	SvCUR_set (data_sv, sizeof (struct io_state));
		2480	SvPOK_only (data_sv);
		2481
		2482	{
		2483	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2484
		2485	data->errorno = errno;
		2486	data->laststype = PL_laststype;
		2487	data->laststatval = PL_laststatval;
		2488	data->statcache = PL_statcache;
		2489	}
		2490
		2491	/* now build the result vector out of all the parameters and the data_sv */
		2492	{
		2493	int i;
		2494
		2495	for (i = 0; i < items; ++i)
		2496	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2497	}
		2498
		2499	av_push (state, data_sv);
		2500
		2501	api_ready (aTHX_ coro);
		2502	SvREFCNT_dec (coro);
		2503	SvREFCNT_dec ((AV *)state);
		2504	}
		2505
		2506	static int
		2507	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2508	{
		2509	AV *state = (AV *)frame->data;
		2510
		2511	/* if we are about to throw, return early */
		2512	/* this does not cancel the aio request, but at least */
		2513	/* it quickly returns */
		2514	if (CORO_THROW)
		2515	return 0;
		2516
		2517	/* one element that is an RV? repeat! */
		2518	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2519	return 1;
		2520
		2521	/* restore status */
		2522	{
		2523	SV *data_sv = av_pop (state);
		2524	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2525
		2526	errno = data->errorno;
		2527	PL_laststype = data->laststype;
		2528	PL_laststatval = data->laststatval;
		2529	PL_statcache = data->statcache;
		2530
		2531	SvREFCNT_dec (data_sv);
		2532	}
		2533
		2534	/* push result values */
		2535	{
1877	dSP;	2536	dSP;
1878	struct transfer_args ta;	2537	int i;
1879	SV **arg = PL_stack_base + TOPMARK + 1;
1880	int items = SP - arg; /* args without function object */
1881	int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882	struct CoroSLF *slf = 0;
1883	SV *gv = *sp;
1884		2538
1885	/* do a quick consistency check on the "function" object, and if it isn't */	2539	EXTEND (SP, AvFILLp (state) + 1);
1886	/* for us, divert to the real entersub */	2540	for (i = 0; i <= AvFILLp (state); ++i)
1887	if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel)	2541	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
1888	return PL_ppaddr[OP_ENTERSUB](aTHX);
1889		2542
1890	/* pop args */
1891	SP = PL_stack_base + POPMARK;
1892
1893	if (!(PL_op->op_flags & OPf_STACKED))
1894	{
1895	/* ampersand-form of call, use @_ instead of stack */
1896	AV *av = GvAV (PL_defgv);
1897	arg = AvARRAY (av);
1898	items = AvFILLp (av) + 1;
1899	}
1900
1901	PUTBACK;	2543	PUTBACK;
		2544	}
1902		2545
1903	if (!ix)	2546	return 0;
1904	{	2547	}
1905	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;	2548
1906	ix = slf->prepare (aTHX_ arg, items);	2549	static void
		2550	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2551	{
		2552	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2553	SV *coro_hv = SvRV (coro_current);
		2554	struct coro *coro = SvSTATE_hv (coro_hv);
		2555
		2556	/* put our coroutine id on the state arg */
		2557	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2558
		2559	/* first see whether we have a non-zero priority and set it as AIO prio */
		2560	if (coro->prio)
1907	}	2561	{
		2562	dSP;
1908		2563
1909	switch (ix)	2564	static SV *prio_cv;
		2565	static SV *prio_sv;
		2566
		2567	if (expect_false (!prio_cv))
		2568	{
		2569	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2570	prio_sv = newSViv (0);
		2571	}
		2572
		2573	PUSHMARK (SP);
		2574	sv_setiv (prio_sv, coro->prio);
		2575	XPUSHs (prio_sv);
		2576
		2577	PUTBACK;
		2578	call_sv (prio_cv, G_VOID | G_DISCARD);
1910	{	2579	}
1911	case CORO_SLF_SET_STACKLEVEL:
1912	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913	break;
1914		2580
1915	case CORO_SLF_TRANSFER:	2581	/* now call the original request */
1916	if (items != 2)	2582	{
1917	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);	2583	dSP;
		2584	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2585	int i;
1918		2586
1919	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);	2587	PUSHMARK (SP);
1920	break;
1921		2588
1922	case CORO_SLF_SCHEDULE:	2589	/* first push all args to the stack */
1923	prepare_schedule (aTHX_ &ta);	2590	EXTEND (SP, items + 1);
1924	break;
1925		2591
1926	case CORO_SLF_CEDE:	2592	for (i = 0; i < items; ++i)
1927	prepare_cede (aTHX_ &ta);	2593	PUSHs (arg [i]);
1928	break;
1929		2594
1930	case CORO_SLF_CEDE_NOTSELF:	2595	/* now push the callback closure */
1931	prepare_cede_notself (aTHX_ &ta);	2596	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1932	break;
1933		2597
1934	default:	2598	/* now call the AIO function - we assume our request is uncancelable */
1935	abort ();
1936	}
1937
1938	do
1939	TRANSFER (ta, 0);
1940	while (slf && slf->check (aTHX));
1941
1942	SPAGAIN;
1943
1944	PUTBACK;	2599	PUTBACK;
1945	SLF_TAIL;	2600	call_sv ((SV *)req, G_VOID | G_DISCARD);
1946	SPAGAIN;	2601	}
1947	RETURN;
1948	}
1949		2602
1950	static void	2603	/* now that the requets is going, we loop toll we have a result */
1951	coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)	2604	frame->data = (void *)state;
1952	{	2605	frame->prepare = prepare_schedule;
1953	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));	2606	frame->check = slf_check_aio_req;
1954
1955	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956	slf_cv = cv;
1957
1958	/* we patch the op, and then re-run the whole call */
1959	/* we have to put the same argument on the stack for this to work */
1960	/* and this will be done by pp_restore */
1961	slf_restore.op_next = (OP *)&slf_restore;
1962	slf_restore.op_type = OP_NULL;
1963	slf_restore.op_ppaddr = pp_restore;
1964	slf_restore.op_first = PL_op;
1965
1966	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969	PL_op->op_ppaddr = pp_slf;
1970	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972	PL_op = (OP *)&slf_restore;
1973	}	2607	}
1974		2608
1975	static void	2609	static void
1976	api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items)	2610	coro_aio_req_xs (pTHX_ CV *cv)
1977	{	2611	{
1978	CvXSUBANY (cv).any_ptr = (void *)slf;	2612	dXSARGS;
1979	coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items);	2613
		2614	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2615
		2616	XSRETURN_EMPTY;
1980	}	2617	}
		2618
		2619	/*****************************************************************************/
1981		2620
1982	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2621	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1983		2622
1984	PROTOTYPES: DISABLE	2623	PROTOTYPES: DISABLE
1985		2624
1986	BOOT:	2625	BOOT:
1987	{	2626	{
1988	#ifdef USE_ITHREADS	2627	#ifdef USE_ITHREADS
1989	MUTEX_INIT (&coro_lock);
1990	# if CORO_PTHREAD	2628	# if CORO_PTHREAD
1991	coro_thx = PERL_GET_CONTEXT;	2629	coro_thx = PERL_GET_CONTEXT;
1992	# endif	2630	# endif
1993	#endif	2631	#endif
1994	BOOT_PAGESIZE;	2632	BOOT_PAGESIZE;
…		…
2015	main_top_env = PL_top_env;	2653	main_top_env = PL_top_env;
2016		2654
2017	while (main_top_env->je_prev)	2655	while (main_top_env->je_prev)
2018	main_top_env = main_top_env->je_prev;	2656	main_top_env = main_top_env->je_prev;
2019		2657
		2658	{
		2659	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2660
		2661	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2662	hv_store_ent (PL_custom_op_names, slf,
		2663	newSVpv ("coro_slf", 0), 0);
		2664
		2665	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2666	hv_store_ent (PL_custom_op_descs, slf,
		2667	newSVpv ("coro schedule like function", 0), 0);
		2668	}
		2669
2020	coroapi.ver = CORO_API_VERSION;	2670	coroapi.ver = CORO_API_VERSION;
2021	coroapi.rev = CORO_API_REVISION;	2671	coroapi.rev = CORO_API_REVISION;
		2672
2022	coroapi.transfer = api_transfer;	2673	coroapi.transfer = api_transfer;
		2674
		2675	coroapi.sv_state = SvSTATE_;
2023	coroapi.execute_slf = api_execute_slf;	2676	coroapi.execute_slf = api_execute_slf;
		2677	coroapi.prepare_nop = prepare_nop;
		2678	coroapi.prepare_schedule = prepare_schedule;
		2679	coroapi.prepare_cede = prepare_cede;
		2680	coroapi.prepare_cede_notself = prepare_cede_notself;
2024		2681
2025	{	2682	{
2026	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2683	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027		2684
2028	if (!svp) croak ("Time::HiRes is required");	2685	if (!svp) croak ("Time::HiRes is required");
…		…
2034	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2691	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2035	}	2692	}
2036		2693
2037	SV *	2694	SV *
2038	new (char *klass, ...)	2695	new (char *klass, ...)
		2696	ALIAS:
		2697	Coro::new = 1
2039	CODE:	2698	CODE:
2040	{	2699	{
2041	struct coro *coro;	2700	struct coro *coro;
2042	MAGIC *mg;	2701	MAGIC *mg;
2043	HV *hv;	2702	HV *hv;
		2703	CV *cb;
2044	int i;	2704	int i;
		2705
		2706	if (items > 1)
		2707	{
		2708	cb = coro_sv_2cv (aTHX_ ST (1));
		2709
		2710	if (!ix)
		2711	{
		2712	if (CvISXSUB (cb))
		2713	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2714
		2715	if (!CvROOT (cb))
		2716	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2717	}
		2718	}
2045		2719
2046	Newz (0, coro, 1, struct coro);	2720	Newz (0, coro, 1, struct coro);
2047	coro->args = newAV ();	2721	coro->args = newAV ();
2048	coro->flags = CF_NEW;	2722	coro->flags = CF_NEW;
2049		2723
…		…
2054	coro->hv = hv = newHV ();	2728	coro->hv = hv = newHV ();
2055	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2729	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056	mg->mg_flags |= MGf_DUP;	2730	mg->mg_flags |= MGf_DUP;
2057	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2731	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2058		2732
		2733	if (items > 1)
		2734	{
2059	av_extend (coro->args, items - 1);	2735	av_extend (coro->args, items - 1 + ix - 1);
		2736
		2737	if (ix)
		2738	{
		2739	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2740	cb = cv_coro_run;
		2741	}
		2742
		2743	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2744
2060	for (i = 1; i < items; i++)	2745	for (i = 2; i < items; i++)
2061	av_push (coro->args, newSVsv (ST (i)));	2746	av_push (coro->args, newSVsv (ST (i)));
		2747	}
2062	}	2748	}
2063	OUTPUT:	2749	OUTPUT:
2064	RETVAL	2750	RETVAL
2065		2751
2066	void	2752	void
2067	_set_stacklevel (...)	2753	transfer (...)
2068	ALIAS:	2754	PROTOTYPE: $$
2069	_set_stacklevel = CORO_SLF_SET_STACKLEVEL	2755	CODE:
2070	Coro::State::transfer = CORO_SLF_TRANSFER	2756	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2071	Coro::schedule = CORO_SLF_SCHEDULE
2072	Coro::cede = CORO_SLF_CEDE
2073	Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
2074	CODE:
2075	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2076		2757
2077	bool	2758	bool
2078	_destroy (SV *coro_sv)	2759	_destroy (SV *coro_sv)
2079	CODE:	2760	CODE:
2080	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2761	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2087	CODE:	2768	CODE:
2088	_exit (code);	2769	_exit (code);
2089		2770
2090	int	2771	int
2091	cctx_stacksize (int new_stacksize = 0)	2772	cctx_stacksize (int new_stacksize = 0)
		2773	PROTOTYPE: ;$
2092	CODE:	2774	CODE:
2093	RETVAL = cctx_stacksize;	2775	RETVAL = cctx_stacksize;
2094	if (new_stacksize)	2776	if (new_stacksize)
2095	{	2777	{
2096	cctx_stacksize = new_stacksize;	2778	cctx_stacksize = new_stacksize;
…		…
2099	OUTPUT:	2781	OUTPUT:
2100	RETVAL	2782	RETVAL
2101		2783
2102	int	2784	int
2103	cctx_max_idle (int max_idle = 0)	2785	cctx_max_idle (int max_idle = 0)
		2786	PROTOTYPE: ;$
2104	CODE:	2787	CODE:
2105	RETVAL = cctx_max_idle;	2788	RETVAL = cctx_max_idle;
2106	if (max_idle > 1)	2789	if (max_idle > 1)
2107	cctx_max_idle = max_idle;	2790	cctx_max_idle = max_idle;
2108	OUTPUT:	2791	OUTPUT:
2109	RETVAL	2792	RETVAL
2110		2793
2111	int	2794	int
2112	cctx_count ()	2795	cctx_count ()
		2796	PROTOTYPE:
2113	CODE:	2797	CODE:
2114	RETVAL = cctx_count;	2798	RETVAL = cctx_count;
2115	OUTPUT:	2799	OUTPUT:
2116	RETVAL	2800	RETVAL
2117		2801
2118	int	2802	int
2119	cctx_idle ()	2803	cctx_idle ()
		2804	PROTOTYPE:
2120	CODE:	2805	CODE:
2121	RETVAL = cctx_idle;	2806	RETVAL = cctx_idle;
2122	OUTPUT:	2807	OUTPUT:
2123	RETVAL	2808	RETVAL
2124		2809
2125	void	2810	void
2126	list ()	2811	list ()
		2812	PROTOTYPE:
2127	PPCODE:	2813	PPCODE:
2128	{	2814	{
2129	struct coro *coro;	2815	struct coro *coro;
2130	for (coro = coro_first; coro; coro = coro->next)	2816	for (coro = coro_first; coro; coro = coro->next)
2131	if (coro->hv)	2817	if (coro->hv)
…		…
2193		2879
2194	void	2880	void
2195	throw (Coro::State self, SV *throw = &PL_sv_undef)	2881	throw (Coro::State self, SV *throw = &PL_sv_undef)
2196	PROTOTYPE: $;$	2882	PROTOTYPE: $;$
2197	CODE:	2883	CODE:
		2884	{
		2885	struct coro *current = SvSTATE_current;
		2886	SV **throwp = self == current ? &CORO_THROW : &self->except;
2198	SvREFCNT_dec (self->throw);	2887	SvREFCNT_dec (*throwp);
2199	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2888	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2889	}
2200		2890
2201	void	2891	void
2202	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2892	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		2893	PROTOTYPE: $;$
2203	C_ARGS: aTHX_ coro, flags	2894	C_ARGS: aTHX_ coro, flags
2204		2895
2205	SV *	2896	SV *
2206	has_cctx (Coro::State coro)	2897	has_cctx (Coro::State coro)
2207	PROTOTYPE: $	2898	PROTOTYPE: $
…		…
2232	OUTPUT:	2923	OUTPUT:
2233	RETVAL	2924	RETVAL
2234		2925
2235	void	2926	void
2236	force_cctx ()	2927	force_cctx ()
		2928	PROTOTYPE:
2237	CODE:	2929	CODE:
2238	struct coro *coro = SvSTATE (coro_current);
2239	coro->cctx->idle_sp = 0;	2930	SvSTATE_current->cctx->idle_sp = 0;
2240		2931
2241	void	2932	void
2242	swap_defsv (Coro::State self)	2933	swap_defsv (Coro::State self)
2243	PROTOTYPE: $	2934	PROTOTYPE: $
2244	ALIAS:	2935	ALIAS:
2245	swap_defav = 1	2936	swap_defav = 1
2246	CODE:	2937	CODE:
2247	if (!self->slot)	2938	if (!self->slot)
2248	croak ("cannot swap state with coroutine that has no saved state");	2939	croak ("cannot swap state with coroutine that has no saved state,");
2249	else	2940	else
2250	{	2941	{
2251	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);	2942	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2943	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253		2944
2254	SV *tmp = *src; *src = *dst; *dst = tmp;	2945	SV *tmp = *src; *src = *dst; *dst = tmp;
2255	}	2946	}
2256		2947
		2948
2257	MODULE = Coro::State PACKAGE = Coro	2949	MODULE = Coro::State PACKAGE = Coro
2258		2950
2259	BOOT:	2951	BOOT:
2260	{	2952	{
2261	int i;	2953	int i;
2262		2954
2263	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	2955	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2956	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2957	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266		2958	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		2959	cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2267	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2960	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2268	SvREADONLY_on (coro_current);	2961	SvREADONLY_on (coro_current);
		2962
		2963	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		2964	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		2965	cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
		2966	cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2269		2967
2270	coro_stash = gv_stashpv ("Coro", TRUE);	2968	coro_stash = gv_stashpv ("Coro", TRUE);
2271		2969
2272	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2970	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2273	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2971	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2288	coroapi.ready = api_ready;	2986	coroapi.ready = api_ready;
2289	coroapi.is_ready = api_is_ready;	2987	coroapi.is_ready = api_is_ready;
2290	coroapi.nready = coro_nready;	2988	coroapi.nready = coro_nready;
2291	coroapi.current = coro_current;	2989	coroapi.current = coro_current;
2292		2990
2293	GCoroAPI = &coroapi;	2991	/*GCoroAPI = &coroapi;*/
2294	sv_setiv (sv, (IV)&coroapi);	2992	sv_setiv (sv, (IV)&coroapi);
2295	SvREADONLY_on (sv);	2993	SvREADONLY_on (sv);
2296	}	2994	}
2297	}	2995	}
		2996
		2997	void
		2998	schedule (...)
		2999	CODE:
		3000	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		3001
		3002	void
		3003	cede (...)
		3004	CODE:
		3005	CORO_EXECUTE_SLF_XS (slf_init_cede);
		3006
		3007	void
		3008	cede_notself (...)
		3009	CODE:
		3010	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2298		3011
2299	void	3012	void
2300	_set_current (SV *current)	3013	_set_current (SV *current)
2301	PROTOTYPE: $	3014	PROTOTYPE: $
2302	CODE:	3015	CODE:
…		…
2305		3018
2306	void	3019	void
2307	_set_readyhook (SV *hook)	3020	_set_readyhook (SV *hook)
2308	PROTOTYPE: $	3021	PROTOTYPE: $
2309	CODE:	3022	CODE:
2310	LOCK;
2311	SvREFCNT_dec (coro_readyhook);	3023	SvREFCNT_dec (coro_readyhook);
2312	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3024	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2313	UNLOCK;
2314		3025
2315	int	3026	int
2316	prio (Coro::State coro, int newprio = 0)	3027	prio (Coro::State coro, int newprio = 0)
		3028	PROTOTYPE: $;$
2317	ALIAS:	3029	ALIAS:
2318	nice = 1	3030	nice = 1
2319	CODE:	3031	CODE:
2320	{	3032	{
2321	RETVAL = coro->prio;	3033	RETVAL = coro->prio;
…		…
2348	CODE:	3060	CODE:
2349	RETVAL = coro_nready;	3061	RETVAL = coro_nready;
2350	OUTPUT:	3062	OUTPUT:
2351	RETVAL	3063	RETVAL
2352		3064
2353	# for async_pool speedup
2354	void	3065	void
2355	_pool_1 (SV *cb)	3066	_pool_handler (...)
2356	CODE:	3067	CODE:
2357	{	3068	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2358	struct coro *coro = SvSTATE (coro_current);
2359	HV *hv = (HV *)SvRV (coro_current);
2360	AV *defav = GvAV (PL_defgv);
2361	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362	AV *invoke_av;
2363	int i, len;
2364		3069
2365	if (!invoke)	3070	void
		3071	async_pool (SV *cv, ...)
		3072	PROTOTYPE: &@
		3073	PPCODE:
		3074	{
		3075	HV *hv = (HV *)av_pop (av_async_pool);
		3076	AV *av = newAV ();
		3077	SV *cb = ST (0);
		3078	int i;
		3079
		3080	av_extend (av, items - 2);
		3081	for (i = 1; i < items; ++i)
		3082	av_push (av, SvREFCNT_inc_NN (ST (i)));
		3083
		3084	if ((SV *)hv == &PL_sv_undef)
2366	{	3085	{
2367	SV *old = PL_diehook;	3086	PUSHMARK (SP);
2368	PL_diehook = 0;	3087	EXTEND (SP, 2);
2369	SvREFCNT_dec (old);	3088	PUSHs (sv_Coro);
2370	croak ("\3async_pool terminate\2\n");	3089	PUSHs ((SV *)cv_pool_handler);
		3090	PUTBACK;
		3091	call_sv ((SV *)cv_coro_new, G_SCALAR);
		3092	SPAGAIN;
		3093
		3094	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2371	}	3095	}
2372		3096
2373	SvREFCNT_dec (coro->saved_deffh);
2374	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376	hv_store (hv, "desc", sizeof ("desc") - 1,
2377	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379	invoke_av = (AV *)SvRV (invoke);
2380	len = av_len (invoke_av);
2381
2382	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384	if (len > 0)
2385	{	3097	{
2386	av_fill (defav, len - 1);	3098	struct coro *coro = SvSTATE_hv (hv);
2387	for (i = 0; i < len; ++i)	3099
2388	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	3100	assert (!coro->invoke_cb);
		3101	assert (!coro->invoke_av);
		3102	coro->invoke_cb = SvREFCNT_inc (cb);
		3103	coro->invoke_av = av;
2389	}	3104	}
2390		3105
		3106	api_ready (aTHX_ (SV *)hv);
		3107
		3108	if (GIMME_V != G_VOID)
		3109	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3110	else
2391	SvREFCNT_dec (invoke);	3111	SvREFCNT_dec (hv);
2392	}	3112	}
2393		3113
2394	void	3114	SV *
2395	_pool_2 (SV *cb)	3115	rouse_cb ()
		3116	PROTOTYPE:
2396	CODE:	3117	CODE:
2397	{	3118	RETVAL = coro_new_rouse_cb (aTHX);
2398	struct coro *coro = SvSTATE (coro_current);
2399
2400	sv_setsv (cb, &PL_sv_undef);
2401
2402	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403	coro->saved_deffh = 0;
2404
2405	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407	{
2408	SV *old = PL_diehook;
2409	PL_diehook = 0;
2410	SvREFCNT_dec (old);
2411	croak ("\3async_pool terminate\2\n");
2412	}
2413
2414	av_clear (GvAV (PL_defgv));
2415	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418	coro->prio = 0;
2419
2420	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421	api_trace (aTHX_ coro_current, 0);
2422
2423	av_push (av_async_pool, newSVsv (coro_current));
2424	}
2425
2426	#if 0
2427
2428	void
2429	_generator_call (...)
2430	PROTOTYPE: @
2431	PPCODE:
2432	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433	xxxx
2434	abort ();
2435
2436	SV *
2437	gensub (SV *sub, ...)
2438	PROTOTYPE: &;@
2439	CODE:
2440	{
2441	struct coro *coro;
2442	MAGIC *mg;
2443	CV *xcv;
2444	CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445	int i;
2446
2447	CvGV (ncv) = CvGV (cv);
2448	CvFILE (ncv) = CvFILE (cv);
2449
2450	Newz (0, coro, 1, struct coro);
2451	coro->args = newAV ();
2452	coro->flags = CF_NEW;
2453
2454	av_extend (coro->args, items - 1);
2455	for (i = 1; i < items; i++)
2456	av_push (coro->args, newSVsv (ST (i)));
2457
2458	CvISXSUB_on (ncv);
2459	CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463	CvXSUB (ncv) = CvXSUB (xcv);
2464	CvANON_on (ncv);
2465
2466	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467	RETVAL = newRV_noinc ((SV *)ncv);
2468	}
2469	OUTPUT:	3119	OUTPUT:
2470	RETVAL	3120	RETVAL
2471		3121
2472	#endif
2473
2474
2475	MODULE = Coro::State PACKAGE = Coro::AIO
2476
2477	void	3122	void
2478	_get_state (SV *self)	3123	rouse_wait (...)
		3124	PROTOTYPE: ;$
2479	PPCODE:	3125	PPCODE:
2480	{	3126	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2481	AV *defav = GvAV (PL_defgv);
2482	AV *av = newAV ();
2483	int i;
2484	SV *data_sv = newSV (sizeof (struct io_state));
2485	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2486	SvCUR_set (data_sv, sizeof (struct io_state));
2487	SvPOK_only (data_sv);
2488		3127
2489	data->errorno = errno;
2490	data->laststype = PL_laststype;
2491	data->laststatval = PL_laststatval;
2492	data->statcache = PL_statcache;
2493		3128
2494	av_extend (av, AvFILLp (defav) + 1 + 1);	3129	MODULE = Coro::State PACKAGE = PerlIO::cede
2495		3130
2496	for (i = 0; i <= AvFILLp (defav); ++i)	3131	BOOT:
2497	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));	3132	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2498		3133
2499	av_push (av, data_sv);
2500		3134
2501	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	3135	MODULE = Coro::State PACKAGE = Coro::Semaphore
2502		3136
2503	api_ready (aTHX_ self);	3137	SV *
2504	}	3138	new (SV *klass, SV *count = 0)
		3139	CODE:
		3140	RETVAL = sv_bless (
		3141	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
		3142	GvSTASH (CvGV (cv))
		3143	);
		3144	OUTPUT:
		3145	RETVAL
		3146
		3147	# helper for Coro::Channel
		3148	SV *
		3149	_alloc (int count)
		3150	CODE:
		3151	RETVAL = coro_waitarray_new (aTHX_ count);
		3152	OUTPUT:
		3153	RETVAL
		3154
		3155	SV *
		3156	count (SV *self)
		3157	CODE:
		3158	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		3159	OUTPUT:
		3160	RETVAL
2505		3161
2506	void	3162	void
2507	_set_state (SV *state)	3163	up (SV *self, int adjust = 1)
2508	PROTOTYPE: $	3164	ALIAS:
		3165	adjust = 1
		3166	CODE:
		3167	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
		3168
		3169	void
		3170	down (...)
		3171	CODE:
		3172	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3173
		3174	void
		3175	wait (...)
		3176	CODE:
		3177	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
		3178
		3179	void
		3180	try (SV *self)
		3181	PPCODE:
		3182	{
		3183	AV *av = (AV *)SvRV (self);
		3184	SV *count_sv = AvARRAY (av)[0];
		3185	IV count = SvIVX (count_sv);
		3186
		3187	if (count > 0)
		3188	{
		3189	--count;
		3190	SvIVX (count_sv) = count;
		3191	XSRETURN_YES;
		3192	}
		3193	else
		3194	XSRETURN_NO;
		3195	}
		3196
		3197	void
		3198	waiters (SV *self)
		3199	PPCODE:
		3200	{
		3201	AV *av = (AV *)SvRV (self);
		3202	int wcount = AvFILLp (av) + 1 - 1;
		3203
		3204	if (GIMME_V == G_SCALAR)
		3205	XPUSHs (sv_2mortal (newSViv (wcount)));
		3206	else
		3207	{
		3208	int i;
		3209	EXTEND (SP, wcount);
		3210	for (i = 1; i <= wcount; ++i)
		3211	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
		3212	}
		3213	}
		3214
		3215	MODULE = Coro::State PACKAGE = Coro::Signal
		3216
		3217	SV *
		3218	new (SV *klass)
2509	PPCODE:	3219	CODE:
		3220	RETVAL = sv_bless (
		3221	coro_waitarray_new (aTHX_ 0),
		3222	GvSTASH (CvGV (cv))
		3223	);
		3224	OUTPUT:
		3225	RETVAL
		3226
		3227	void
		3228	wait (...)
		3229	CODE:
		3230	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3231
		3232	void
		3233	broadcast (SV *self)
		3234	CODE:
2510	{	3235	{
2511	AV *av = (AV *)SvRV (state);	3236	AV *av = (AV *)SvRV (self);
2512	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);	3237	coro_signal_wake (aTHX_ av, AvFILLp (av));
2513	int i;	3238	}
2514		3239
2515	errno = data->errorno;	3240	void
2516	PL_laststype = data->laststype;	3241	send (SV *self)
2517	PL_laststatval = data->laststatval;	3242	CODE:
2518	PL_statcache = data->statcache;	3243	{
		3244	AV *av = (AV *)SvRV (self);
2519		3245
2520	EXTEND (SP, AvFILLp (av));	3246	if (AvFILLp (av))
2521	for (i = 0; i < AvFILLp (av); ++i)	3247	coro_signal_wake (aTHX_ av, 1);
2522	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));	3248	else
		3249	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2523	}	3250	}
		3251
		3252	IV
		3253	awaited (SV *self)
		3254	CODE:
		3255	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3256	OUTPUT:
		3257	RETVAL
2524		3258
2525		3259
2526	MODULE = Coro::State PACKAGE = Coro::AnyEvent	3260	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527		3261
2528	BOOT:	3262	BOOT:
2529	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	3263	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530		3264
2531	SV *	3265	void
2532	_schedule (...)	3266	_schedule (...)
2533	PROTOTYPE: @
2534	CODE:	3267	CODE:
2535	{	3268	{
2536	static int incede;	3269	static int incede;
2537		3270
2538	api_cede_notself (aTHX);	3271	api_cede_notself (aTHX);
…		…
2544	sv_setsv (sv_activity, &PL_sv_undef);	3277	sv_setsv (sv_activity, &PL_sv_undef);
2545	if (coro_nready >= incede)	3278	if (coro_nready >= incede)
2546	{	3279	{
2547	PUSHMARK (SP);	3280	PUSHMARK (SP);
2548	PUTBACK;	3281	PUTBACK;
2549	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3282	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2550	SPAGAIN;
2551	}	3283	}
2552		3284
2553	--incede;	3285	--incede;
2554	}	3286	}
2555		3287
2556		3288
2557	MODULE = Coro::State PACKAGE = PerlIO::cede	3289	MODULE = Coro::State PACKAGE = Coro::AIO
2558		3290
2559	BOOT:	3291	void
2560	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3292	_register (char *target, char *proto, SV *req)
		3293	CODE:
		3294	{
		3295	CV *req_cv = coro_sv_2cv (aTHX_ req);
		3296	/* newXSproto doesn't return the CV on 5.8 */
		3297	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3298	sv_setpv ((SV *)slf_cv, proto);
		3299	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3300	}
2561		3301

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