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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.316 by root, Thu Nov 20 06:01:40 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
		103	#ifndef CvISXSUB
		104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
		105	#endif
100		106
101	/* 5.8.7 */	107	/* 5.8.7 */
102	#ifndef SvRV_set	108	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	109	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	110	#endif
…		…
117	#endif	123	#endif
118		124
119	/* The next macros try to return the current stack pointer, in an as	125	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	126	* portable way as possible. */
121	#if __GNUC__ >= 4	127	#if __GNUC__ >= 4
		128	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	129	# define STACKLEVEL __builtin_frame_address (0)
123	#else	130	#else
124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	131	# define dSTACKLEVEL volatile void *stacklevel
		132	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	133	#endif
126		134
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	135	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		136
129	#if __GNUC__ >= 3	137	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	148	#define expect_true(expr) expect ((expr) != 0, 1)
141		149
142	#define NOINLINE attribute ((noinline))	150	#define NOINLINE attribute ((noinline))
143		151
144	#include "CoroAPI.h"	152	#include "CoroAPI.h"
		153	#define GCoroAPI (&coroapi) /* very sneaky */
145		154
146	#ifdef USE_ITHREADS	155	#ifdef USE_ITHREADS
147	# if CORO_PTHREAD	156	# if CORO_PTHREAD
148	static void *coro_thx;	157	static void *coro_thx;
149	# endif	158	# endif
150	#endif	159	#endif
151		160
152	/* helper storage struct for Coro::AIO */
153	struct io_state
154	{
155	AV *res;
156	int errorno;
157	I32 laststype; /* U16 in 5.10.0 */
158	int laststatval;
159	Stat_t statcache;
160	};
161
162	static double (*nvtime)(); /* so why doesn't it take void? */	161	static double (*nvtime)(); /* so why doesn't it take void? */
		162
		163	/* we hijack an hopefully unused CV flag for our purposes */
		164	#define CVf_SLF 0x4000
		165	static OP *pp_slf (pTHX);
163		166
164	static U32 cctx_gen;	167	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	168	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	169	static struct CoroAPI coroapi;
167	static AV *main_mainstack; /* used to differentiate between $main and others */	170	static AV *main_mainstack; /* used to differentiate between $main and others */
…		…
176	static HV *hv_sig; /* %SIG */	179	static HV *hv_sig; /* %SIG */
177		180
178	/* async_pool helper stuff */	181	/* async_pool helper stuff */
179	static SV *sv_pool_rss;	182	static SV *sv_pool_rss;
180	static SV *sv_pool_size;	183	static SV *sv_pool_size;
		184	static SV *sv_async_pool_idle;
181	static AV *av_async_pool;	185	static AV *av_async_pool;
		186	static SV *sv_Coro;
		187	static CV *cv_pool_handler;
		188	static CV *cv_coro_state_new;
182		189
183	/* Coro::AnyEvent */	190	/* Coro::AnyEvent */
184	static SV *sv_activity;	191	static SV *sv_activity;
185		192
186	static struct coro_cctx *cctx_first;	193	static struct coro_cctx *cctx_first;
…		…
241	/* this is a structure representing a perl-level coroutine */	248	/* this is a structure representing a perl-level coroutine */
242	struct coro {	249	struct coro {
243	/* the C coroutine allocated to this perl coroutine, if any */	250	/* the C coroutine allocated to this perl coroutine, if any */
244	coro_cctx *cctx;	251	coro_cctx *cctx;
245		252
246	/* process data */	253	/* state data */
247	struct CoroSLF slf_frame; /* saved slf frame */	254	struct CoroSLF slf_frame; /* saved slf frame */
248	AV *mainstack;	255	AV *mainstack;
249	perl_slots *slot; /* basically the saved sp */	256	perl_slots *slot; /* basically the saved sp */
250		257
		258	CV *startcv; /* the CV to execute */
251	AV *args; /* data associated with this coroutine (initial args) */	259	AV *args; /* data associated with this coroutine (initial args) */
252	int refcnt; /* coroutines are refcounted, yes */	260	int refcnt; /* coroutines are refcounted, yes */
253	int flags; /* CF_ flags */	261	int flags; /* CF_ flags */
254	HV *hv; /* the perl hash associated with this coro, if any */	262	HV *hv; /* the perl hash associated with this coro, if any */
255	void (*on_destroy)(pTHX_ struct coro *coro);	263	void (*on_destroy)(pTHX_ struct coro *coro);
256		264
257	/* statistics */	265	/* statistics */
258	int usecount; /* number of transfers to this coro */	266	int usecount; /* number of transfers to this coro */
259		267
260	/* coro process data */	268	/* coro process data */
261	int prio;	269	int prio;
262	SV *throw; /* exception to be thrown */	270	SV *except; /* exception to be thrown */
		271	SV *rouse_cb;
263		272
264	/* async_pool */	273	/* async_pool */
265	SV *saved_deffh;	274	SV *saved_deffh;
		275	SV *invoke_cb;
		276	AV *invoke_av;
266		277
267	/* linked list */	278	/* linked list */
268	struct coro *next, *prev;	279	struct coro *next, *prev;
269	};	280	};
270		281
271	typedef struct coro *Coro__State;	282	typedef struct coro *Coro__State;
272	typedef struct coro *Coro__State_or_hashref;	283	typedef struct coro *Coro__State_or_hashref;
273		284
		285	/* the following variables are effectively part of the perl context */
		286	/* and get copied between struct coro and these variables */
		287	/* the mainr easonw e don't support windows process emulation */
274	static struct CoroSLF slf_frame; /* the current slf frame */	288	static struct CoroSLF slf_frame; /* the current slf frame */
275		289
276	/** Coro ********************************************************************/	290	/** Coro ********************************************************************/
277		291
278	#define PRIO_MAX 3	292	#define PRIO_MAX 3
…		…
284		298
285	/* for Coro.pm */	299	/* for Coro.pm */
286	static SV *coro_current;	300	static SV *coro_current;
287	static SV *coro_readyhook;	301	static SV *coro_readyhook;
288	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		303	static CV *cv_coro_run, *cv_coro_terminate;
289	static struct coro *coro_first;	304	static struct coro *coro_first;
290	#define coro_nready coroapi.nready	305	#define coro_nready coroapi.nready
291		306
292	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
293		308
…		…
317	#if PERL_VERSION_ATLEAST (5,10,0)	332	#if PERL_VERSION_ATLEAST (5,10,0)
318	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
319	get_hv (name, create);	334	get_hv (name, create);
320	#endif	335	#endif
321	return get_hv (name, create);	336	return get_hv (name, create);
		337	}
		338
		339	/* may croak */
		340	INLINE CV *
		341	coro_sv_2cv (pTHX_ SV *sv)
		342	{
		343	HV *st;
		344	GV *gvp;
		345	return sv_2cv (sv, &st, &gvp, 0);
322	}	346	}
323		347
324	static AV *	348	static AV *
325	coro_clone_padlist (pTHX_ CV *cv)	349	coro_clone_padlist (pTHX_ CV *cv)
326	{	350	{
…		…
380	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	404	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381		405
382	return 0;	406	return 0;
383	}	407	}
384		408
385	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	409	#define CORO_MAGIC_type_cv 26
386	#define CORO_MAGIC_type_state PERL_MAGIC_ext	410	#define CORO_MAGIC_type_state PERL_MAGIC_ext
387		411
388	static MGVTBL coro_cv_vtbl = {	412	static MGVTBL coro_cv_vtbl = {
389	0, 0, 0, 0,	413	0, 0, 0, 0,
390	coro_cv_free	414	coro_cv_free
391	};	415	};
392		416
		417	#define CORO_MAGIC_NN(sv, type) \
		418	(expect_true (SvMAGIC (sv)->mg_type == type) \
		419	? SvMAGIC (sv) \
		420	: mg_find (sv, type))
		421
393	#define CORO_MAGIC(sv, type) \	422	#define CORO_MAGIC(sv, type) \
394	expect_true (SvMAGIC (sv)) \	423	(expect_true (SvMAGIC (sv)) \
395	? expect_true (SvMAGIC (sv)->mg_type == type) \	424	? CORO_MAGIC_NN (sv, type) \
396	? SvMAGIC (sv) \
397	: mg_find (sv, type) \
398	: 0	425	: 0)
399		426
400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	427	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	428	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402		429
403	INLINE struct coro *	430	INLINE struct coro *
404	SvSTATE_ (pTHX_ SV *coro)	431	SvSTATE_ (pTHX_ SV *coro)
405	{	432	{
406	HV *stash;	433	HV *stash;
…		…
424	return (struct coro *)mg->mg_ptr;	451	return (struct coro *)mg->mg_ptr;
425	}	452	}
426		453
427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	454	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428		455
429	/* fastert than SvSTATE, but expects a coroutine hv */	456	/* faster than SvSTATE, but expects a coroutine hv */
430	INLINE struct coro *	457	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431	SvSTATE_hv (SV *sv)
432	{
433	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434	? SvMAGIC (sv)
435	: mg_find (sv, CORO_MAGIC_type_state);
436
437	return (struct coro *)mg->mg_ptr;
438	}
439
440	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	458	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441		459
442	/* the next two functions merely cache the padlists */	460	/* the next two functions merely cache the padlists */
443	static void	461	static void
444	get_padlist (pTHX_ CV *cv)	462	get_padlist (pTHX_ CV *cv)
…		…
451	else	469	else
452	{	470	{
453	#if CORO_PREFER_PERL_FUNCTIONS	471	#if CORO_PREFER_PERL_FUNCTIONS
454	/* this is probably cleaner? but also slower! */	472	/* this is probably cleaner? but also slower! */
455	/* in practise, it seems to be less stable */	473	/* in practise, it seems to be less stable */
456	CV *cp = Perl_cv_clone (cv);	474	CV *cp = Perl_cv_clone (aTHX_ cv);
457	CvPADLIST (cv) = CvPADLIST (cp);	475	CvPADLIST (cv) = CvPADLIST (cp);
458	CvPADLIST (cp) = 0;	476	CvPADLIST (cp) = 0;
459	SvREFCNT_dec (cp);	477	SvREFCNT_dec (cp);
460	#else	478	#else
461	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	479	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
513	}	531	}
514		532
515	PUTBACK;	533	PUTBACK;
516	}	534	}
517		535
518	slf_frame = c->slf_frame;	536	slf_frame = c->slf_frame;
		537	CORO_THROW = c->except;
519	}	538	}
520		539
521	static void	540	static void
522	save_perl (pTHX_ Coro__State c)	541	save_perl (pTHX_ Coro__State c)
523	{	542	{
		543	c->except = CORO_THROW;
524	c->slf_frame = slf_frame;	544	c->slf_frame = slf_frame;
525		545
526	{	546	{
527	dSP;	547	dSP;
528	I32 cxix = cxstack_ix;	548	I32 cxix = cxstack_ix;
…		…
603	* of perl.c:init_stacks, except that it uses less memory	623	* of perl.c:init_stacks, except that it uses less memory
604	* on the (sometimes correct) assumption that coroutines do	624	* on the (sometimes correct) assumption that coroutines do
605	* not usually need a lot of stackspace.	625	* not usually need a lot of stackspace.
606	*/	626	*/
607	#if CORO_PREFER_PERL_FUNCTIONS	627	#if CORO_PREFER_PERL_FUNCTIONS
608	# define coro_init_stacks init_stacks	628	# define coro_init_stacks(thx) init_stacks ()
609	#else	629	#else
610	static void	630	static void
611	coro_init_stacks (pTHX)	631	coro_init_stacks (pTHX)
612	{	632	{
613	PL_curstackinfo = new_stackinfo(32, 8);	633	PL_curstackinfo = new_stackinfo(32, 8);
…		…
676	#if !PERL_VERSION_ATLEAST (5,10,0)	696	#if !PERL_VERSION_ATLEAST (5,10,0)
677	Safefree (PL_retstack);	697	Safefree (PL_retstack);
678	#endif	698	#endif
679	}	699	}
680		700
		701	#define CORO_RSS \
		702	rss += sizeof (SYM (curstackinfo)); \
		703	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		705	rss += SYM (tmps_max) * sizeof (SV *); \
		706	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		707	rss += SYM (scopestack_max) * sizeof (I32); \
		708	rss += SYM (savestack_max) * sizeof (ANY);
		709
681	static size_t	710	static size_t
682	coro_rss (pTHX_ struct coro *coro)	711	coro_rss (pTHX_ struct coro *coro)
683	{	712	{
684	size_t rss = sizeof (*coro);	713	size_t rss = sizeof (*coro);
685		714
686	if (coro->mainstack)	715	if (coro->mainstack)
687	{	716	{
688	perl_slots tmp_slot;
689	perl_slots *slot;
690
691	if (coro->flags & CF_RUNNING)	717	if (coro->flags & CF_RUNNING)
692	{	718	{
693	slot = &tmp_slot;	719	#define SYM(sym) PL_ ## sym
694		720	CORO_RSS;
695	#define VAR(name,type) slot->name = PL_ ## name;
696	# include "state.h"
697	#undef VAR	721	#undef SYM
698	}	722	}
699	else	723	else
700	slot = coro->slot;
701
702	if (slot)
703	{	724	{
704	rss += sizeof (slot->curstackinfo);	725	#define SYM(sym) coro->slot->sym
705	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	726	CORO_RSS;
706	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	727	#undef SYM
707	rss += slot->tmps_max * sizeof (SV *);
708	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709	rss += slot->scopestack_max * sizeof (I32);
710	rss += slot->savestack_max * sizeof (ANY);
711
712	#if !PERL_VERSION_ATLEAST (5,10,0)
713	rss += slot->retstack_max * sizeof (OP *);
714	#endif
715	}	728	}
716	}	729	}
717		730
718	return rss;	731	return rss;
719	}	732	}
…		…
821	slf_check_nop (pTHX_ struct CoroSLF *frame)	834	slf_check_nop (pTHX_ struct CoroSLF *frame)
822	{	835	{
823	return 0;	836	return 0;
824	}	837	}
825		838
826	static void	839	static UNOP coro_setup_op;
		840
		841	static void NOINLINE /* noinline to keep it out of the transfer fast path */
827	coro_setup (pTHX_ struct coro *coro)	842	coro_setup (pTHX_ struct coro *coro)
828	{	843	{
829	/*	844	/*
830	* emulate part of the perl startup here.	845	* emulate part of the perl startup here.
831	*/	846	*/
…		…
858	{	873	{
859	dSP;	874	dSP;
860	UNOP myop;	875	UNOP myop;
861		876
862	Zero (&myop, 1, UNOP);	877	Zero (&myop, 1, UNOP);
863	myop.op_next = Nullop;	878	myop.op_next = Nullop;
		879	myop.op_type = OP_ENTERSUB;
864	myop.op_flags = OPf_WANT_VOID;	880	myop.op_flags = OPf_WANT_VOID;
865		881
866	PUSHMARK (SP);	882	PUSHMARK (SP);
867	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	883	PUSHs ((SV *)coro->startcv);
868	PUTBACK;	884	PUTBACK;
869	PL_op = (OP *)&myop;	885	PL_op = (OP *)&myop;
870	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	886	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871	SPAGAIN;
872	}	887	}
873		888
874	/* this newly created coroutine might be run on an existing cctx which most	889	/* this newly created coroutine might be run on an existing cctx which most
875	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	890	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876	*/	891	*/
877	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	892	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	893	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		894
		895	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		896	coro_setup_op.op_next = PL_op;
		897	coro_setup_op.op_type = OP_CUSTOM;
		898	coro_setup_op.op_ppaddr = pp_slf;
		899	/* no flags etc. required, as an init function won't be called */
		900
		901	PL_op = (OP *)&coro_setup_op;
		902
		903	/* copy throw, in case it was set before coro_setup */
		904	CORO_THROW = coro->except;
879	}	905	}
880		906
881	static void	907	static void
882	coro_destruct (pTHX_ struct coro *coro)	908	coro_destruct (pTHX_ struct coro *coro)
883	{	909	{
…		…
907		933
908	SvREFCNT_dec (PL_diehook);	934	SvREFCNT_dec (PL_diehook);
909	SvREFCNT_dec (PL_warnhook);	935	SvREFCNT_dec (PL_warnhook);
910		936
911	SvREFCNT_dec (coro->saved_deffh);	937	SvREFCNT_dec (coro->saved_deffh);
912	SvREFCNT_dec (coro->throw);	938	SvREFCNT_dec (coro->rouse_cb);
		939	SvREFCNT_dec (coro->invoke_cb);
		940	SvREFCNT_dec (coro->invoke_av);
913		941
914	coro_destruct_stacks (aTHX);	942	coro_destruct_stacks (aTHX);
915	}	943	}
916		944
917	INLINE void	945	INLINE void
…		…
1004	SAVETMPS;	1032	SAVETMPS;
1005	EXTEND (SP, 3);	1033	EXTEND (SP, 3);
1006	PUSHMARK (SP);	1034	PUSHMARK (SP);
1007	PUSHs (&PL_sv_yes);	1035	PUSHs (&PL_sv_yes);
1008	PUSHs (fullname);	1036	PUSHs (fullname);
1009	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1037	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010	PUTBACK;	1038	PUTBACK;
1011	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1039	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1040	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013	SPAGAIN;	1041	SPAGAIN;
1014	FREETMPS;	1042	FREETMPS;
…		…
1046		1074
1047	TAINT_NOT;	1075	TAINT_NOT;
1048	return 0;	1076	return 0;
1049	}	1077	}
1050		1078
		1079	static struct coro_cctx *cctx_ssl_cctx;
		1080	static struct CoroSLF cctx_ssl_frame;
		1081
1051	static void	1082	static void
1052	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1083	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053	{	1084	{
1054	ta->prev = (struct coro *)cctx;	1085	ta->prev = (struct coro *)cctx_ssl_cctx;
1055	ta->next = 0;	1086	ta->next = 0;
1056	}	1087	}
1057		1088
1058	/* inject a fake call to Coro::State::_cctx_init into the execution */	1089	static int
1059	/* _cctx_init should be careful, as it could be called at almost any time */	1090	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060	/* during execution of a perl program */	1091	{
1061	/* also initialises PL_top_env */	1092	*frame = cctx_ssl_frame;
		1093
		1094	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1095	}
		1096
		1097	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062	static void NOINLINE	1098	static void NOINLINE
1063	cctx_prepare (pTHX_ coro_cctx *cctx)	1099	cctx_prepare (pTHX_ coro_cctx *cctx)
1064	{	1100	{
1065	dSP;
1066	UNOP myop;
1067
1068	PL_top_env = &PL_start_env;	1101	PL_top_env = &PL_start_env;
1069		1102
1070	if (cctx->flags & CC_TRACE)	1103	if (cctx->flags & CC_TRACE)
1071	PL_runops = runops_trace;	1104	PL_runops = runops_trace;
1072		1105
1073	Zero (&myop, 1, UNOP);	1106	/* we already must be executing an SLF op, there is no other valid way
1074	myop.op_next = PL_op;	1107	* that can lead to creation of a new cctx */
1075	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1108	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1109	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076		1110
1077	PUSHMARK (SP);	1111	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078	EXTEND (SP, 2);	1112	cctx_ssl_cctx = cctx;
1079	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1113	cctx_ssl_frame = slf_frame;
1080	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1114
1081	PUTBACK;	1115	slf_frame.prepare = slf_prepare_set_stacklevel;
1082	PL_op = (OP *)&myop;	1116	slf_frame.check = slf_check_set_stacklevel;
1083	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084	SPAGAIN;
1085	}	1117	}
1086		1118
1087	/* the tail of transfer: execute stuff we can only do after a transfer */	1119	/* the tail of transfer: execute stuff we can only do after a transfer */
1088	INLINE void	1120	INLINE void
1089	transfer_tail (pTHX)	1121	transfer_tail (pTHX)
…		…
1116	transfer_tail (aTHX);	1148	transfer_tail (aTHX);
1117		1149
1118	/* somebody or something will hit me for both perl_run and PL_restartop */	1150	/* somebody or something will hit me for both perl_run and PL_restartop */
1119	PL_restartop = PL_op;	1151	PL_restartop = PL_op;
1120	perl_run (PL_curinterp);	1152	perl_run (PL_curinterp);
		1153	/*
		1154	* Unfortunately, there is no way to get at the return values of the
		1155	* coro body here, as perl_run destroys these
		1156	*/
1121		1157
1122	/*	1158	/*
1123	* If perl-run returns we assume exit() was being called or the coro	1159	* If perl-run returns we assume exit() was being called or the coro
1124	* fell off the end, which seems to be the only valid (non-bug)	1160	* fell off the end, which seems to be the only valid (non-bug)
1125	* reason for perl_run to return. We try to exit by jumping to the	1161	* reason for perl_run to return. We try to exit by jumping to the
…		…
1276	/** coroutine switching *****************************************************/	1312	/** coroutine switching *****************************************************/
1277		1313
1278	static void	1314	static void
1279	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1315	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280	{	1316	{
		1317	/* TODO: throwing up here is considered harmful */
		1318
1281	if (expect_true (prev != next))	1319	if (expect_true (prev != next))
1282	{	1320	{
1283	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1321	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1322	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285		1323
…		…
1295	#endif	1333	#endif
1296	}	1334	}
1297	}	1335	}
1298		1336
1299	/* always use the TRANSFER macro */	1337	/* always use the TRANSFER macro */
1300	static void NOINLINE	1338	static void NOINLINE /* noinline so we have a fixed stackframe */
1301	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1339	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302	{	1340	{
1303	dSTACKLEVEL;	1341	dSTACKLEVEL;
1304		1342
1305	/* sometimes transfer is only called to set idle_sp */	1343	/* sometimes transfer is only called to set idle_sp */
1306	if (expect_false (!next))	1344	if (expect_false (!next))
1307	{	1345	{
1308	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1346	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1309	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1347	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310	}	1348	}
1311	else if (expect_true (prev != next))	1349	else if (expect_true (prev != next))
1312	{	1350	{
1313	coro_cctx *prev__cctx;	1351	coro_cctx *prev__cctx;
…		…
1338		1376
1339	prev__cctx = prev->cctx;	1377	prev__cctx = prev->cctx;
1340		1378
1341	/* possibly untie and reuse the cctx */	1379	/* possibly untie and reuse the cctx */
1342	if (expect_true (	1380	if (expect_true (
1343	prev__cctx->idle_sp == (void *)stacklevel	1381	prev__cctx->idle_sp == STACKLEVEL
1344	&& !(prev__cctx->flags & CC_TRACE)	1382	&& !(prev__cctx->flags & CC_TRACE)
1345	&& !force_cctx	1383	&& !force_cctx
1346	))	1384	))
1347	{	1385	{
1348	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1386	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1415		1453
1416	coro->slot = 0;	1454	coro->slot = 0;
1417	}	1455	}
1418		1456
1419	cctx_destroy (coro->cctx);	1457	cctx_destroy (coro->cctx);
		1458	SvREFCNT_dec (coro->startcv);
1420	SvREFCNT_dec (coro->args);	1459	SvREFCNT_dec (coro->args);
		1460	SvREFCNT_dec (CORO_THROW);
1421		1461
1422	if (coro->next) coro->next->prev = coro->prev;	1462	if (coro->next) coro->next->prev = coro->prev;
1423	if (coro->prev) coro->prev->next = coro->next;	1463	if (coro->prev) coro->prev->next = coro->next;
1424	if (coro == coro_first) coro_first = coro->next;	1464	if (coro == coro_first) coro_first = coro->next;
1425		1465
…		…
1479		1519
1480	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1520	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481	TRANSFER (ta, 1);	1521	TRANSFER (ta, 1);
1482	}	1522	}
1483		1523
		1524	/*****************************************************************************/
		1525	/* gensub: simple closure generation utility */
		1526
		1527	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1528
		1529	/* create a closure from XS, returns a code reference */
		1530	/* the arg can be accessed via GENSUB_ARG from the callback */
		1531	/* the callback must use dXSARGS/XSRETURN */
		1532	static SV *
		1533	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1534	{
		1535	CV *cv = (CV *)newSV (0);
		1536
		1537	sv_upgrade ((SV *)cv, SVt_PVCV);
		1538
		1539	CvANON_on (cv);
		1540	CvISXSUB_on (cv);
		1541	CvXSUB (cv) = xsub;
		1542	GENSUB_ARG = arg;
		1543
		1544	return newRV_noinc ((SV *)cv);
		1545	}
		1546
1484	/** Coro ********************************************************************/	1547	/** Coro ********************************************************************/
1485		1548
1486	INLINE void	1549	INLINE void
1487	coro_enq (pTHX_ struct coro *coro)	1550	coro_enq (pTHX_ struct coro *coro)
1488	{	1551	{
…		…
1531	ENTER;	1594	ENTER;
1532	SAVETMPS;	1595	SAVETMPS;
1533		1596
1534	PUSHMARK (SP);	1597	PUSHMARK (SP);
1535	PUTBACK;	1598	PUTBACK;
1536	call_sv (sv_hook, G_DISCARD);	1599	call_sv (sv_hook, G_VOID | G_DISCARD);
1537	SPAGAIN;
1538		1600
1539	FREETMPS;	1601	FREETMPS;
1540	LEAVE;	1602	LEAVE;
1541	}	1603	}
1542		1604
…		…
1550	api_is_ready (pTHX_ SV *coro_sv)	1612	api_is_ready (pTHX_ SV *coro_sv)
1551	{	1613	{
1552	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1614	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553	}	1615	}
1554		1616
		1617	/* expects to own a reference to next->hv */
1555	INLINE void	1618	INLINE void
		1619	prepare_cede_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
		1620	{
		1621	SV *prev_sv = SvRV (coro_current);
		1622
		1623	ta->prev = SvSTATE_hv (prev_sv);
		1624	ta->next = next;
		1625
		1626	TRANSFER_CHECK (*ta);
		1627
		1628	SvRV_set (coro_current, next->hv);
		1629
		1630	free_coro_mortal (aTHX);
		1631	coro_mortal = prev_sv;
		1632	}
		1633
		1634	static void
1556	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1635	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1557	{	1636	{
1558	SV *prev_sv, *next_sv;
1559
1560	for (;;)	1637	for (;;)
1561	{	1638	{
1562	next_sv = coro_deq (aTHX);	1639	SV *next_sv = coro_deq (aTHX);
1563		1640
1564	/* nothing to schedule: call the idle handler */
1565	if (expect_false (!next_sv))	1641	if (expect_false (!next_sv))
1566	{	1642	{
		1643	/* nothing to schedule: call the idle handler */
1567	dSP;	1644	dSP;
1568		1645
1569	ENTER;	1646	ENTER;
1570	SAVETMPS;	1647	SAVETMPS;
1571		1648
1572	PUSHMARK (SP);	1649	PUSHMARK (SP);
1573	PUTBACK;	1650	PUTBACK;
1574	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1651	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1575	SPAGAIN;
1576		1652
1577	FREETMPS;	1653	FREETMPS;
1578	LEAVE;	1654	LEAVE;
1579	continue;
1580	}	1655	}
1581		1656	else
1582	ta->next = SvSTATE_hv (next_sv);
1583
1584	/* cannot transfer to destroyed coros, skip and look for next */
1585	if (expect_false (ta->next->flags & CF_DESTROYED))
1586	{	1657	{
1587	SvREFCNT_dec (next_sv);	1658	struct coro *next = SvSTATE_hv (next_sv);
		1659
		1660	/* cannot transfer to destroyed coros, skip and look for next */
		1661	if (expect_false (next->flags & CF_DESTROYED))
1588	/* coro_nready has already been taken care of by destroy */	1662	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1589	continue;	1663	else
		1664	{
		1665	next->flags &= ~CF_READY;
		1666	--coro_nready;
		1667
		1668	return prepare_cede_to (aTHX_ ta, next);
		1669	}
1590	}	1670	}
1591
1592	--coro_nready;
1593	break;
1594	}	1671	}
1595
1596	/* free this only after the transfer */
1597	prev_sv = SvRV (coro_current);
1598	ta->prev = SvSTATE_hv (prev_sv);
1599	TRANSFER_CHECK (*ta);
1600	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1601	ta->next->flags &= ~CF_READY;
1602	SvRV_set (coro_current, next_sv);
1603
1604	free_coro_mortal (aTHX);
1605	coro_mortal = prev_sv;
1606	}	1672	}
1607		1673
1608	INLINE void	1674	INLINE void
1609	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1675	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610	{	1676	{
…		…
1687	if (coro->flags & CF_RUNNING)	1753	if (coro->flags & CF_RUNNING)
1688	PL_runops = RUNOPS_DEFAULT;	1754	PL_runops = RUNOPS_DEFAULT;
1689	else	1755	else
1690	coro->slot->runops = RUNOPS_DEFAULT;	1756	coro->slot->runops = RUNOPS_DEFAULT;
1691	}	1757	}
		1758	}
		1759
		1760	/*****************************************************************************/
		1761	/* async pool handler */
		1762
		1763	static int
		1764	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1765	{
		1766	HV *hv = (HV *)SvRV (coro_current);
		1767	struct coro *coro = (struct coro *)frame->data;
		1768
		1769	if (!coro->invoke_cb)
		1770	return 1; /* loop till we have invoke */
		1771	else
		1772	{
		1773	hv_store (hv, "desc", sizeof ("desc") - 1,
		1774	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1775
		1776	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1777
		1778	{
		1779	dSP;
		1780	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1781	PUTBACK;
		1782	}
		1783
		1784	SvREFCNT_dec (GvAV (PL_defgv));
		1785	GvAV (PL_defgv) = coro->invoke_av;
		1786	coro->invoke_av = 0;
		1787
		1788	return 0;
		1789	}
		1790	}
		1791
		1792	static void
		1793	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1794	{
		1795	HV *hv = (HV *)SvRV (coro_current);
		1796	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1797
		1798	if (expect_true (coro->saved_deffh))
		1799	{
		1800	/* subsequent iteration */
		1801	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1802	coro->saved_deffh = 0;
		1803
		1804	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1805	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1806	{
		1807	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1808	coro->invoke_av = newAV ();
		1809
		1810	frame->prepare = prepare_nop;
		1811	}
		1812	else
		1813	{
		1814	av_clear (GvAV (PL_defgv));
		1815	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1816
		1817	coro->prio = 0;
		1818
		1819	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1820	api_trace (aTHX_ coro_current, 0);
		1821
		1822	frame->prepare = prepare_schedule;
		1823	av_push (av_async_pool, SvREFCNT_inc (hv));
		1824	}
		1825	}
		1826	else
		1827	{
		1828	/* first iteration, simply fall through */
		1829	frame->prepare = prepare_nop;
		1830	}
		1831
		1832	frame->check = slf_check_pool_handler;
		1833	frame->data = (void *)coro;
		1834	}
		1835
		1836	/*****************************************************************************/
		1837	/* rouse callback */
		1838
		1839	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1840
		1841	static void
		1842	coro_rouse_callback (pTHX_ CV *cv)
		1843	{
		1844	dXSARGS;
		1845	SV *data = (SV *)GENSUB_ARG;
		1846
		1847	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1848	{
		1849	/* first call, set args */
		1850	AV *av = newAV ();
		1851	SV *coro = SvRV (data);
		1852
		1853	SvRV_set (data, (SV *)av);
		1854	api_ready (aTHX_ coro);
		1855	SvREFCNT_dec (coro);
		1856
		1857	/* better take a full copy of the arguments */
		1858	while (items--)
		1859	av_store (av, items, newSVsv (ST (items)));
		1860	}
		1861
		1862	XSRETURN_EMPTY;
		1863	}
		1864
		1865	static int
		1866	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1867	{
		1868	SV *data = (SV *)frame->data;
		1869
		1870	if (CORO_THROW)
		1871	return 0;
		1872
		1873	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1874	return 1;
		1875
		1876	/* now push all results on the stack */
		1877	{
		1878	dSP;
		1879	AV *av = (AV *)SvRV (data);
		1880	int i;
		1881
		1882	EXTEND (SP, AvFILLp (av) + 1);
		1883	for (i = 0; i <= AvFILLp (av); ++i)
		1884	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1885
		1886	/* we have stolen the elements, so ste length to zero and free */
		1887	AvFILLp (av) = -1;
		1888	av_undef (av);
		1889
		1890	PUTBACK;
		1891	}
		1892
		1893	return 0;
		1894	}
		1895
		1896	static void
		1897	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1898	{
		1899	SV *cb;
		1900
		1901	if (items)
		1902	cb = arg [0];
		1903	else
		1904	{
		1905	struct coro *coro = SvSTATE_current;
		1906
		1907	if (!coro->rouse_cb)
		1908	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1909
		1910	cb = sv_2mortal (coro->rouse_cb);
		1911	coro->rouse_cb = 0;
		1912	}
		1913
		1914	if (!SvROK (cb)
		1915	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1916	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1917	croak ("Coro::rouse_wait called with illegal callback argument,");
		1918
		1919	{
		1920	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1921	SV *data = (SV *)GENSUB_ARG;
		1922
		1923	frame->data = (void *)data;
		1924	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		1925	frame->check = slf_check_rouse_wait;
		1926	}
		1927	}
		1928
		1929	static SV *
		1930	coro_new_rouse_cb (pTHX)
		1931	{
		1932	HV *hv = (HV *)SvRV (coro_current);
		1933	struct coro *coro = SvSTATE_hv (hv);
		1934	SV *data = newRV_inc ((SV *)hv);
		1935	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		1936
		1937	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		1938	SvREFCNT_dec (data); /* magicext increases the refcount */
		1939
		1940	SvREFCNT_dec (coro->rouse_cb);
		1941	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		1942
		1943	return cb;
		1944	}
		1945
		1946	/*****************************************************************************/
		1947	/* schedule-like-function opcode (SLF) */
		1948
		1949	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1950	static const CV *slf_cv;
		1951	static SV **slf_argv;
		1952	static int slf_argc, slf_arga; /* count, allocated */
		1953	static I32 slf_ax; /* top of stack, for restore */
		1954
		1955	/* this restores the stack in the case we patched the entersub, to */
		1956	/* recreate the stack frame as perl will on following calls */
		1957	/* since entersub cleared the stack */
		1958	static OP *
		1959	pp_restore (pTHX)
		1960	{
		1961	int i;
		1962	SV **SP = PL_stack_base + slf_ax;
		1963
		1964	PUSHMARK (SP);
		1965
		1966	EXTEND (SP, slf_argc + 1);
		1967
		1968	for (i = 0; i < slf_argc; ++i)
		1969	PUSHs (sv_2mortal (slf_argv [i]));
		1970
		1971	PUSHs ((SV *)CvGV (slf_cv));
		1972
		1973	RETURNOP (slf_restore.op_first);
		1974	}
		1975
		1976	static void
		1977	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1978	{
		1979	SV **arg = (SV **)slf_frame.data;
		1980
		1981	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1982	}
		1983
		1984	static void
		1985	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1986	{
		1987	if (items != 2)
		1988	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1989
		1990	frame->prepare = slf_prepare_transfer;
		1991	frame->check = slf_check_nop;
		1992	frame->data = (void *)arg; /* let's hope it will stay valid */
		1993	}
		1994
		1995	static void
		1996	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1997	{
		1998	frame->prepare = prepare_schedule;
		1999	frame->check = slf_check_nop;
		2000	}
		2001
		2002	static void
		2003	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2004	{
		2005	frame->prepare = prepare_cede;
		2006	frame->check = slf_check_nop;
		2007	}
		2008
		2009	static void
		2010	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2011	{
		2012	frame->prepare = prepare_cede_notself;
		2013	frame->check = slf_check_nop;
		2014	}
		2015
		2016	/*
		2017	* these not obviously related functions are all rolled into one
		2018	* function to increase chances that they all will call transfer with the same
		2019	* stack offset
		2020	* SLF stands for "schedule-like-function".
		2021	*/
		2022	static OP *
		2023	pp_slf (pTHX)
		2024	{
		2025	I32 checkmark; /* mark SP to see how many elements check has pushed */
		2026
		2027	/* set up the slf frame, unless it has already been set-up */
		2028	/* the latter happens when a new coro has been started */
		2029	/* or when a new cctx was attached to an existing coroutine */
		2030	if (expect_true (!slf_frame.prepare))
		2031	{
		2032	/* first iteration */
		2033	dSP;
		2034	SV **arg = PL_stack_base + TOPMARK + 1;
		2035	int items = SP - arg; /* args without function object */
		2036	SV *gv = *sp;
		2037
		2038	/* do a quick consistency check on the "function" object, and if it isn't */
		2039	/* for us, divert to the real entersub */
		2040	if (SvTYPE (gv) != SVt_PVGV
		2041	|| !GvCV (gv)
		2042	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		2043	return PL_ppaddr[OP_ENTERSUB](aTHX);
		2044
		2045	if (!(PL_op->op_flags & OPf_STACKED))
		2046	{
		2047	/* ampersand-form of call, use @_ instead of stack */
		2048	AV *av = GvAV (PL_defgv);
		2049	arg = AvARRAY (av);
		2050	items = AvFILLp (av) + 1;
		2051	}
		2052
		2053	/* now call the init function, which needs to set up slf_frame */
		2054	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		2055	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		2056
		2057	/* pop args */
		2058	SP = PL_stack_base + POPMARK;
		2059
		2060	PUTBACK;
		2061	}
		2062
		2063	/* now that we have a slf_frame, interpret it! */
		2064	/* we use a callback system not to make the code needlessly */
		2065	/* complicated, but so we can run multiple perl coros from one cctx */
		2066
		2067	do
		2068	{
		2069	struct coro_transfer_args ta;
		2070
		2071	slf_frame.prepare (aTHX_ &ta);
		2072	TRANSFER (ta, 0);
		2073
		2074	checkmark = PL_stack_sp - PL_stack_base;
		2075	}
		2076	while (slf_frame.check (aTHX_ &slf_frame));
		2077
		2078	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		2079
		2080	/* exception handling */
		2081	if (expect_false (CORO_THROW))
		2082	{
		2083	SV *exception = sv_2mortal (CORO_THROW);
		2084
		2085	CORO_THROW = 0;
		2086	sv_setsv (ERRSV, exception);
		2087	croak (0);
		2088	}
		2089
		2090	/* return value handling - mostly like entersub */
		2091	/* make sure we put something on the stack in scalar context */
		2092	if (GIMME_V == G_SCALAR)
		2093	{
		2094	dSP;
		2095	SV **bot = PL_stack_base + checkmark;
		2096
		2097	if (sp == bot) /* too few, push undef */
		2098	bot [1] = &PL_sv_undef;
		2099	else if (sp != bot + 1) /* too many, take last one */
		2100	bot [1] = *sp;
		2101
		2102	SP = bot + 1;
		2103
		2104	PUTBACK;
		2105	}
		2106
		2107	return NORMAL;
		2108	}
		2109
		2110	static void
		2111	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2112	{
		2113	int i;
		2114	SV **arg = PL_stack_base + ax;
		2115	int items = PL_stack_sp - arg + 1;
		2116
		2117	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2118
		2119	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2120	&& PL_op->op_ppaddr != pp_slf)
		2121	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2122
		2123	CvFLAGS (cv) |= CVf_SLF;
		2124	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2125	slf_cv = cv;
		2126
		2127	/* we patch the op, and then re-run the whole call */
		2128	/* we have to put the same argument on the stack for this to work */
		2129	/* and this will be done by pp_restore */
		2130	slf_restore.op_next = (OP *)&slf_restore;
		2131	slf_restore.op_type = OP_CUSTOM;
		2132	slf_restore.op_ppaddr = pp_restore;
		2133	slf_restore.op_first = PL_op;
		2134
		2135	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2136
		2137	if (PL_op->op_flags & OPf_STACKED)
		2138	{
		2139	if (items > slf_arga)
		2140	{
		2141	slf_arga = items;
		2142	free (slf_argv);
		2143	slf_argv = malloc (slf_arga * sizeof (SV *));
		2144	}
		2145
		2146	slf_argc = items;
		2147
		2148	for (i = 0; i < items; ++i)
		2149	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2150	}
		2151	else
		2152	slf_argc = 0;
		2153
		2154	PL_op->op_ppaddr = pp_slf;
		2155	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		2156
		2157	PL_op = (OP *)&slf_restore;
1692	}	2158	}
1693		2159
1694	/*****************************************************************************/	2160	/*****************************************************************************/
1695	/* PerlIO::cede */	2161	/* PerlIO::cede */
1696		2162
…		…
1765	PerlIOBuf_get_cnt,	2231	PerlIOBuf_get_cnt,
1766	PerlIOBuf_set_ptrcnt,	2232	PerlIOBuf_set_ptrcnt,
1767	};	2233	};
1768		2234
1769	/*****************************************************************************/	2235	/*****************************************************************************/
		2236	/* Coro::Semaphore & Coro::Signal */
1770		2237
1771	static const CV *slf_cv; /* for quick consistency check */
1772
1773	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774	static SV *slf_arg0;
1775	static SV *slf_arg1;
1776	static SV *slf_arg2;
1777
1778	/* this restores the stack in the case we patched the entersub, to */
1779	/* recreate the stack frame as perl will on following calls */
1780	/* since entersub cleared the stack */
1781	static OP *	2238	static SV *
1782	pp_restore (pTHX)	2239	coro_waitarray_new (pTHX_ int count)
1783	{	2240	{
1784	dSP;	2241	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2242	AV *av = newAV ();
		2243	SV **ary;
1785		2244
1786	PUSHMARK (SP);	2245	/* unfortunately, building manually saves memory */
		2246	Newx (ary, 2, SV *);
		2247	AvALLOC (av) = ary;
		2248	/*AvARRAY (av) = ary;*/
		2249	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2250	AvMAX (av) = 1;
		2251	AvFILLp (av) = 0;
		2252	ary [0] = newSViv (count);
1787		2253
1788	EXTEND (SP, 3);	2254	return newRV_noinc ((SV *)av);
1789	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792	PUSHs ((SV *)CvGV (slf_cv));
1793
1794	RETURNOP (slf_restore.op_first);
1795	}	2255	}
1796		2256
1797	static void	2257	/* semaphore */
1798	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799	{
1800	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801	}
1802
1803	static void
1804	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805	{
1806	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808	frame->prepare = slf_prepare_set_stacklevel;
1809	frame->check = slf_check_nop;
1810	frame->data = (void *)SvIV (arg [0]);
1811	}
1812
1813	static void
1814	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815	{
1816	SV **arg = (SV **)slf_frame.data;
1817
1818	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820	/* if the destination has ->throw set, then copy it */
1821	/* into the current coro's throw slot, so it will be raised */
1822	/* after the schedule */
1823	if (expect_false (ta->next->throw))
1824	{
1825	struct coro *coro = SvSTATE_current;
1826	SvREFCNT_dec (coro->throw);
1827	coro->throw = ta->next->throw;
1828	ta->next->throw = 0;
1829	}
1830	}
1831
1832	static void
1833	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834	{
1835	if (items != 2)
1836	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838	frame->prepare = slf_prepare_transfer;
1839	frame->check = slf_check_nop;
1840	frame->data = (void *)arg; /* let's hope it will stay valid */
1841	}
1842
1843	static void
1844	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845	{
1846	frame->prepare = prepare_schedule;
1847	frame->check = slf_check_nop;
1848	}
1849
1850	static void
1851	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852	{
1853	frame->prepare = prepare_cede;
1854	frame->check = slf_check_nop;
1855	}
1856
1857	static void
1858	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859	{
1860	frame->prepare = prepare_cede_notself;
1861	frame->check = slf_check_nop;
1862	}
1863
1864	/* we hijack an hopefully unused CV flag for our purposes */
1865	#define CVf_SLF 0x4000
1866
1867	/*
1868	* these not obviously related functions are all rolled into one
1869	* function to increase chances that they all will call transfer with the same
1870	* stack offset
1871	* SLF stands for "schedule-like-function".
1872	*/
1873	static OP *
1874	pp_slf (pTHX)
1875	{
1876	I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878	/* set up the slf frame, unless it has already been set-up */
1879	/* the latter happens when a new coro has been started */
1880	/* or when a new cctx was attached to an existing coroutine */
1881	if (expect_true (!slf_frame.prepare))
1882	{
1883	/* first iteration */
1884	dSP;
1885	SV **arg = PL_stack_base + TOPMARK + 1;
1886	int items = SP - arg; /* args without function object */
1887	SV *gv = *sp;
1888
1889	/* do a quick consistency check on the "function" object, and if it isn't */
1890	/* for us, divert to the real entersub */
1891	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892	return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894	if (!(PL_op->op_flags & OPf_STACKED))
1895	{
1896	/* ampersand-form of call, use @_ instead of stack */
1897	AV *av = GvAV (PL_defgv);
1898	arg = AvARRAY (av);
1899	items = AvFILLp (av) + 1;
1900	}
1901
1902	PUTBACK;
1903
1904	/* now call the init function, which needs to set up slf_frame */
1905	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908	/* pop args */
1909	SP = PL_stack_base + POPMARK;
1910
1911	PUTBACK;
1912	}
1913
1914	/* now that we have a slf_frame, interpret it! */
1915	/* we use a callback system not to make the code needlessly */
1916	/* complicated, but so we can run multiple perl coros from one cctx */
1917
1918	do
1919	{
1920	struct coro_transfer_args ta;
1921
1922	slf_frame.prepare (aTHX_ &ta);
1923	TRANSFER (ta, 0);
1924
1925	checkmark = PL_stack_sp - PL_stack_base;
1926	}
1927	while (slf_frame.check (aTHX_ &slf_frame));
1928
1929	{
1930	dSP;
1931	SV **bot = PL_stack_base + checkmark;
1932	int gimme = GIMME_V;
1933
1934	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936	/* make sure we put something on the stack in scalar context */
1937	if (gimme == G_SCALAR)
1938	{
1939	if (sp == bot)
1940	XPUSHs (&PL_sv_undef);
1941
1942	SP = bot + 1;
1943	}
1944
1945	PUTBACK;
1946	}
1947
1948	{
1949	struct coro *coro = SvSTATE_current;
1950
1951	if (expect_false (coro->throw))
1952	{
1953	SV *exception = sv_2mortal (coro->throw);
1954
1955	coro->throw = 0;
1956	sv_setsv (ERRSV, exception);
1957	croak (0);
1958	}
1959	}
1960
1961	return NORMAL;
1962	}
1963
1964	static void
1965	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1966	{
1967	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970	&& PL_op->op_ppaddr != pp_slf)
1971	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973	if (items > 3)
1974	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976	CvFLAGS (cv) |= CVf_SLF;
1977	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978	slf_cv = cv;
1979
1980	/* we patch the op, and then re-run the whole call */
1981	/* we have to put the same argument on the stack for this to work */
1982	/* and this will be done by pp_restore */
1983	slf_restore.op_next = (OP *)&slf_restore;
1984	slf_restore.op_type = OP_CUSTOM;
1985	slf_restore.op_ppaddr = pp_restore;
1986	slf_restore.op_first = PL_op;
1987
1988	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992	PL_op->op_ppaddr = pp_slf;
1993
1994	PL_op = (OP *)&slf_restore;
1995	}
1996
1997	/*****************************************************************************/
1998		2258
1999	static void	2259	static void
2000	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2260	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001	{	2261	{
2002	SV *count_sv = AvARRAY (av)[0];	2262	SV *count_sv = AvARRAY (av)[0];
…		…
2014	AvARRAY (av)[0] = AvARRAY (av)[1];	2274	AvARRAY (av)[0] = AvARRAY (av)[1];
2015	AvARRAY (av)[1] = count_sv;	2275	AvARRAY (av)[1] = count_sv;
2016	cb = av_shift (av);	2276	cb = av_shift (av);
2017		2277
2018	if (SvOBJECT (cb))	2278	if (SvOBJECT (cb))
		2279	{
2019	api_ready (aTHX_ cb);	2280	api_ready (aTHX_ cb);
2020	else	2281	--count;
2021	croak ("callbacks not yet supported");	2282	}
		2283	else if (SvTYPE (cb) == SVt_PVCV)
		2284	{
		2285	dSP;
		2286	PUSHMARK (SP);
		2287	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2288	PUTBACK;
		2289	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2290	}
2022		2291
2023	SvREFCNT_dec (cb);	2292	SvREFCNT_dec (cb);
2024
2025	--count;
2026	}	2293	}
2027	}	2294	}
2028		2295
2029	static void	2296	static void
2030	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2297	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2032	/* call $sem->adjust (0) to possibly wake up some other waiters */	2299	/* call $sem->adjust (0) to possibly wake up some other waiters */
2033	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2300	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2034	}	2301	}
2035		2302
2036	static int	2303	static int
2037	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2304	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2038	{	2305	{
2039	AV *av = (AV *)frame->data;	2306	AV *av = (AV *)frame->data;
2040	SV *count_sv = AvARRAY (av)[0];	2307	SV *count_sv = AvARRAY (av)[0];
2041		2308
		2309	/* if we are about to throw, don't actually acquire the lock, just throw */
		2310	if (CORO_THROW)
		2311	return 0;
2042	if (SvIVX (count_sv) > 0)	2312	else if (SvIVX (count_sv) > 0)
2043	{	2313	{
2044	SvSTATE_current->on_destroy = 0;	2314	SvSTATE_current->on_destroy = 0;
		2315
		2316	if (acquire)
2045	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2317	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2318	else
		2319	coro_semaphore_adjust (aTHX_ av, 0);
		2320
2046	return 0;	2321	return 0;
2047	}	2322	}
2048	else	2323	else
2049	{	2324	{
2050	int i;	2325	int i;
…		…
2059	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2334	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060	return 1;	2335	return 1;
2061	}	2336	}
2062	}	2337	}
2063		2338
2064	static void	2339	static int
		2340	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2341	{
		2342	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2343	}
		2344
		2345	static int
		2346	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2347	{
		2348	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2349	}
		2350
		2351	static void
2065	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2352	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066	{	2353	{
2067	AV *av = (AV *)SvRV (arg [0]);	2354	AV *av = (AV *)SvRV (arg [0]);
2068		2355
2069	if (SvIVX (AvARRAY (av)[0]) > 0)	2356	if (SvIVX (AvARRAY (av)[0]) > 0)
2070	{	2357	{
2071	frame->data = (void *)av;	2358	frame->data = (void *)av;
2072	frame->prepare = prepare_nop;	2359	frame->prepare = prepare_nop;
2073	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074	}	2360	}
2075	else	2361	else
2076	{	2362	{
2077	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2363	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078		2364
2079	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2365	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080	frame->prepare = prepare_schedule;	2366	frame->prepare = prepare_schedule;
2081		2367
2082	/* to avoid race conditions when a woken-up coro gets terminated */	2368	/* to avoid race conditions when a woken-up coro gets terminated */
2083	/* we arrange for a temporary on_destroy that calls adjust (0) */	2369	/* we arrange for a temporary on_destroy that calls adjust (0) */
2084	assert (!SvSTATE_current->on_destroy);//D
2085	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2370	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086	}	2371	}
		2372	}
2087		2373
		2374	static void
		2375	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2376	{
		2377	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2088	frame->check = slf_check_semaphore_down;	2378	frame->check = slf_check_semaphore_down;
		2379	}
2089		2380
		2381	static void
		2382	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2383	{
		2384	if (items >= 2)
		2385	{
		2386	/* callback form */
		2387	AV *av = (AV *)SvRV (arg [0]);
		2388	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
		2389
		2390	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
		2391
		2392	if (SvIVX (AvARRAY (av)[0]) > 0)
		2393	coro_semaphore_adjust (aTHX_ av, 0);
		2394
		2395	frame->prepare = prepare_nop;
		2396	frame->check = slf_check_nop;
		2397	}
		2398	else
		2399	{
		2400	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2401	frame->check = slf_check_semaphore_wait;
		2402	}
		2403	}
		2404
		2405	/* signal */
		2406
		2407	static void
		2408	coro_signal_wake (pTHX_ AV *av, int count)
		2409	{
		2410	SvIVX (AvARRAY (av)[0]) = 0;
		2411
		2412	/* now signal count waiters */
		2413	while (count > 0 && AvFILLp (av) > 0)
		2414	{
		2415	SV *cb;
		2416
		2417	/* swap first two elements so we can shift a waiter */
		2418	cb = AvARRAY (av)[0];
		2419	AvARRAY (av)[0] = AvARRAY (av)[1];
		2420	AvARRAY (av)[1] = cb;
		2421
		2422	cb = av_shift (av);
		2423
		2424	api_ready (aTHX_ cb);
		2425	sv_setiv (cb, 0); /* signal waiter */
		2426	SvREFCNT_dec (cb);
		2427
		2428	--count;
		2429	}
		2430	}
		2431
		2432	static int
		2433	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2434	{
		2435	/* if we are about to throw, also stop waiting */
		2436	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2437	}
		2438
		2439	static void
		2440	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2441	{
		2442	AV *av = (AV *)SvRV (arg [0]);
		2443
		2444	if (SvIVX (AvARRAY (av)[0]))
		2445	{
		2446	SvIVX (AvARRAY (av)[0]) = 0;
		2447	frame->prepare = prepare_nop;
		2448	frame->check = slf_check_nop;
		2449	}
		2450	else
		2451	{
		2452	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2453
		2454	av_push (av, waiter);
		2455
		2456	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2457	frame->prepare = prepare_schedule;
		2458	frame->check = slf_check_signal_wait;
		2459	}
2090	}	2460	}
2091		2461
2092	/*****************************************************************************/	2462	/*****************************************************************************/
		2463	/* Coro::AIO */
2093		2464
2094	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2465	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2095		2466
2096	/* create a closure from XS, returns a code reference */	2467	/* helper storage struct */
2097	/* the arg can be accessed via GENSUB_ARG from the callback */	2468	struct io_state
2098	/* the callback must use dXSARGS/XSRETURN */
2099	static SV *
2100	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101	{	2469	{
2102	CV *cv = (CV *)NEWSV (0, 0);	2470	int errorno;
		2471	I32 laststype; /* U16 in 5.10.0 */
		2472	int laststatval;
		2473	Stat_t statcache;
		2474	};
2103		2475
		2476	static void
		2477	coro_aio_callback (pTHX_ CV *cv)
		2478	{
		2479	dXSARGS;
		2480	AV *state = (AV *)GENSUB_ARG;
		2481	SV *coro = av_pop (state);
		2482	SV *data_sv = newSV (sizeof (struct io_state));
		2483
		2484	av_extend (state, items - 1);
		2485
2104	sv_upgrade ((SV *)cv, SVt_PVCV);	2486	sv_upgrade (data_sv, SVt_PV);
		2487	SvCUR_set (data_sv, sizeof (struct io_state));
		2488	SvPOK_only (data_sv);
2105		2489
2106	CvANON_on (cv);	2490	{
2107	CvISXSUB_on (cv);	2491	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2108	CvXSUB (cv) = xsub;
2109	GENSUB_ARG = arg;
2110		2492
2111	return newRV_noinc ((SV *)cv);	2493	data->errorno = errno;
		2494	data->laststype = PL_laststype;
		2495	data->laststatval = PL_laststatval;
		2496	data->statcache = PL_statcache;
		2497	}
		2498
		2499	/* now build the result vector out of all the parameters and the data_sv */
		2500	{
		2501	int i;
		2502
		2503	for (i = 0; i < items; ++i)
		2504	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2505	}
		2506
		2507	av_push (state, data_sv);
		2508
		2509	api_ready (aTHX_ coro);
		2510	SvREFCNT_dec (coro);
		2511	SvREFCNT_dec ((AV *)state);
		2512	}
		2513
		2514	static int
		2515	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2516	{
		2517	AV *state = (AV *)frame->data;
		2518
		2519	/* if we are about to throw, return early */
		2520	/* this does not cancel the aio request, but at least */
		2521	/* it quickly returns */
		2522	if (CORO_THROW)
		2523	return 0;
		2524
		2525	/* one element that is an RV? repeat! */
		2526	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2527	return 1;
		2528
		2529	/* restore status */
		2530	{
		2531	SV *data_sv = av_pop (state);
		2532	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2533
		2534	errno = data->errorno;
		2535	PL_laststype = data->laststype;
		2536	PL_laststatval = data->laststatval;
		2537	PL_statcache = data->statcache;
		2538
		2539	SvREFCNT_dec (data_sv);
		2540	}
		2541
		2542	/* push result values */
		2543	{
		2544	dSP;
		2545	int i;
		2546
		2547	EXTEND (SP, AvFILLp (state) + 1);
		2548	for (i = 0; i <= AvFILLp (state); ++i)
		2549	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2550
		2551	PUTBACK;
		2552	}
		2553
		2554	return 0;
		2555	}
		2556
		2557	static void
		2558	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2559	{
		2560	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2561	SV *coro_hv = SvRV (coro_current);
		2562	struct coro *coro = SvSTATE_hv (coro_hv);
		2563
		2564	/* put our coroutine id on the state arg */
		2565	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2566
		2567	/* first see whether we have a non-zero priority and set it as AIO prio */
		2568	if (coro->prio)
		2569	{
		2570	dSP;
		2571
		2572	static SV *prio_cv;
		2573	static SV *prio_sv;
		2574
		2575	if (expect_false (!prio_cv))
		2576	{
		2577	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2578	prio_sv = newSViv (0);
		2579	}
		2580
		2581	PUSHMARK (SP);
		2582	sv_setiv (prio_sv, coro->prio);
		2583	XPUSHs (prio_sv);
		2584
		2585	PUTBACK;
		2586	call_sv (prio_cv, G_VOID | G_DISCARD);
		2587	}
		2588
		2589	/* now call the original request */
		2590	{
		2591	dSP;
		2592	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2593	int i;
		2594
		2595	PUSHMARK (SP);
		2596
		2597	/* first push all args to the stack */
		2598	EXTEND (SP, items + 1);
		2599
		2600	for (i = 0; i < items; ++i)
		2601	PUSHs (arg [i]);
		2602
		2603	/* now push the callback closure */
		2604	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2605
		2606	/* now call the AIO function - we assume our request is uncancelable */
		2607	PUTBACK;
		2608	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2609	}
		2610
		2611	/* now that the requets is going, we loop toll we have a result */
		2612	frame->data = (void *)state;
		2613	frame->prepare = prepare_schedule;
		2614	frame->check = slf_check_aio_req;
		2615	}
		2616
		2617	static void
		2618	coro_aio_req_xs (pTHX_ CV *cv)
		2619	{
		2620	dXSARGS;
		2621
		2622	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2623
		2624	XSRETURN_EMPTY;
2112	}	2625	}
2113		2626
2114	/*****************************************************************************/	2627	/*****************************************************************************/
2115		2628
2116	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2629	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
…		…
2186	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2699	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2187	}	2700	}
2188		2701
2189	SV *	2702	SV *
2190	new (char *klass, ...)	2703	new (char *klass, ...)
		2704	ALIAS:
		2705	Coro::new = 1
2191	CODE:	2706	CODE:
2192	{	2707	{
2193	struct coro *coro;	2708	struct coro *coro;
2194	MAGIC *mg;	2709	MAGIC *mg;
2195	HV *hv;	2710	HV *hv;
		2711	CV *cb;
2196	int i;	2712	int i;
		2713
		2714	if (items > 1)
		2715	{
		2716	cb = coro_sv_2cv (aTHX_ ST (1));
		2717
		2718	if (!ix)
		2719	{
		2720	if (CvISXSUB (cb))
		2721	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2722
		2723	if (!CvROOT (cb))
		2724	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2725	}
		2726	}
2197		2727
2198	Newz (0, coro, 1, struct coro);	2728	Newz (0, coro, 1, struct coro);
2199	coro->args = newAV ();	2729	coro->args = newAV ();
2200	coro->flags = CF_NEW;	2730	coro->flags = CF_NEW;
2201		2731
…		…
2206	coro->hv = hv = newHV ();	2736	coro->hv = hv = newHV ();
2207	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2737	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208	mg->mg_flags |= MGf_DUP;	2738	mg->mg_flags |= MGf_DUP;
2209	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2739	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2210		2740
		2741	if (items > 1)
		2742	{
2211	av_extend (coro->args, items - 1);	2743	av_extend (coro->args, items - 1 + ix - 1);
		2744
		2745	if (ix)
		2746	{
		2747	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2748	cb = cv_coro_run;
		2749	}
		2750
		2751	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2752
2212	for (i = 1; i < items; i++)	2753	for (i = 2; i < items; i++)
2213	av_push (coro->args, newSVsv (ST (i)));	2754	av_push (coro->args, newSVsv (ST (i)));
		2755	}
2214	}	2756	}
2215	OUTPUT:	2757	OUTPUT:
2216	RETVAL	2758	RETVAL
2217
2218	void
2219	_set_stacklevel (...)
2220	CODE:
2221	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222		2759
2223	void	2760	void
2224	transfer (...)	2761	transfer (...)
2225	PROTOTYPE: $$	2762	PROTOTYPE: $$
2226	CODE:	2763	CODE:
2227	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2764	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228		2765
2229	bool	2766	bool
2230	_destroy (SV *coro_sv)	2767	_destroy (SV *coro_sv)
2231	CODE:	2768	CODE:
2232	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2769	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2350		2887
2351	void	2888	void
2352	throw (Coro::State self, SV *throw = &PL_sv_undef)	2889	throw (Coro::State self, SV *throw = &PL_sv_undef)
2353	PROTOTYPE: $;$	2890	PROTOTYPE: $;$
2354	CODE:	2891	CODE:
		2892	{
		2893	struct coro *current = SvSTATE_current;
		2894	SV **throwp = self == current ? &CORO_THROW : &self->except;
2355	SvREFCNT_dec (self->throw);	2895	SvREFCNT_dec (*throwp);
2356	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2896	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2897	}
2357		2898
2358	void	2899	void
2359	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2900	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360	PROTOTYPE: $;$	2901	PROTOTYPE: $;$
2361	C_ARGS: aTHX_ coro, flags	2902	C_ARGS: aTHX_ coro, flags
…		…
2410	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2951	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411		2952
2412	SV *tmp = *src; *src = *dst; *dst = tmp;	2953	SV *tmp = *src; *src = *dst; *dst = tmp;
2413	}	2954	}
2414		2955
		2956
2415	MODULE = Coro::State PACKAGE = Coro	2957	MODULE = Coro::State PACKAGE = Coro
2416		2958
2417	BOOT:	2959	BOOT:
2418	{	2960	{
2419	int i;	2961	int i;
2420		2962
2421	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	2963	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2964	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2965	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2424		2966	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		2967	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2425	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2968	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2426	SvREADONLY_on (coro_current);	2969
		2970	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		2971	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		2972	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
		2973	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2427		2974
2428	coro_stash = gv_stashpv ("Coro", TRUE);	2975	coro_stash = gv_stashpv ("Coro", TRUE);
2429		2976
2430	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2977	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2431	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2978	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2446	coroapi.ready = api_ready;	2993	coroapi.ready = api_ready;
2447	coroapi.is_ready = api_is_ready;	2994	coroapi.is_ready = api_is_ready;
2448	coroapi.nready = coro_nready;	2995	coroapi.nready = coro_nready;
2449	coroapi.current = coro_current;	2996	coroapi.current = coro_current;
2450		2997
2451	GCoroAPI = &coroapi;	2998	/*GCoroAPI = &coroapi;*/
2452	sv_setiv (sv, (IV)&coroapi);	2999	sv_setiv (sv, (IV)&coroapi);
2453	SvREADONLY_on (sv);	3000	SvREADONLY_on (sv);
2454	}	3001	}
2455	}	3002	}
2456		3003
2457	void	3004	void
2458	schedule (...)	3005	schedule (...)
2459	CODE:	3006	CODE:
2460	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);	3007	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2461		3008
2462	void	3009	void
2463	cede (...)	3010	cede (...)
2464	CODE:	3011	CODE:
2465	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);	3012	CORO_EXECUTE_SLF_XS (slf_init_cede);
2466		3013
2467	void	3014	void
2468	cede_notself (...)	3015	cede_notself (...)
2469	CODE:	3016	CODE:
2470	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);	3017	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2471		3018
2472	void	3019	void
2473	_set_current (SV *current)	3020	_set_current (SV *current)
2474	PROTOTYPE: $	3021	PROTOTYPE: $
2475	CODE:	3022	CODE:
…		…
2520	CODE:	3067	CODE:
2521	RETVAL = coro_nready;	3068	RETVAL = coro_nready;
2522	OUTPUT:	3069	OUTPUT:
2523	RETVAL	3070	RETVAL
2524		3071
2525	# for async_pool speedup
2526	void	3072	void
2527	_pool_1 (SV *cb)	3073	_pool_handler (...)
2528	CODE:	3074	CODE:
2529	{	3075	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2530	HV *hv = (HV *)SvRV (coro_current);
2531	struct coro *coro = SvSTATE_hv ((SV *)hv);
2532	AV *defav = GvAV (PL_defgv);
2533	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2534	AV *invoke_av;
2535	int i, len;
2536
2537	if (!invoke)
2538	{
2539	SV *old = PL_diehook;
2540	PL_diehook = 0;
2541	SvREFCNT_dec (old);
2542	croak ("\3async_pool terminate\2\n");
2543	}
2544
2545	SvREFCNT_dec (coro->saved_deffh);
2546	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2547
2548	hv_store (hv, "desc", sizeof ("desc") - 1,
2549	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2550
2551	invoke_av = (AV *)SvRV (invoke);
2552	len = av_len (invoke_av);
2553
2554	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2555
2556	if (len > 0)
2557	{
2558	av_fill (defav, len - 1);
2559	for (i = 0; i < len; ++i)
2560	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2561	}
2562	}
2563		3076
2564	void	3077	void
2565	_pool_2 (SV *cb)	3078	async_pool (SV *cv, ...)
2566	CODE:
2567	{
2568	struct coro *coro = SvSTATE_current;
2569
2570	sv_setsv (cb, &PL_sv_undef);
2571
2572	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2573	coro->saved_deffh = 0;
2574
2575	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2576	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2577	{
2578	SV *old = PL_diehook;
2579	PL_diehook = 0;
2580	SvREFCNT_dec (old);
2581	croak ("\3async_pool terminate\2\n");
2582	}
2583
2584	av_clear (GvAV (PL_defgv));
2585	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2586	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2587
2588	coro->prio = 0;
2589
2590	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2591	api_trace (aTHX_ coro_current, 0);
2592
2593	av_push (av_async_pool, newSVsv (coro_current));
2594	}
2595
2596
2597	MODULE = Coro::State PACKAGE = Coro::AIO
2598
2599	void
2600	_get_state (SV *self)
2601	PROTOTYPE: $	3079	PROTOTYPE: &@
2602	PPCODE:	3080	PPCODE:
2603	{	3081	{
2604	AV *defav = GvAV (PL_defgv);	3082	HV *hv = (HV *)av_pop (av_async_pool);
2605	AV *av = newAV ();	3083	AV *av = newAV ();
		3084	SV *cb = ST (0);
2606	int i;	3085	int i;
2607	SV *data_sv = newSV (sizeof (struct io_state));
2608	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2609	SvCUR_set (data_sv, sizeof (struct io_state));
2610	SvPOK_only (data_sv);
2611		3086
2612	data->errorno = errno;	3087	av_extend (av, items - 2);
2613	data->laststype = PL_laststype;	3088	for (i = 1; i < items; ++i)
2614	data->laststatval = PL_laststatval;
2615	data->statcache = PL_statcache;
2616
2617	av_extend (av, AvFILLp (defav) + 1 + 1);
2618
2619	for (i = 0; i <= AvFILLp (defav); ++i)
2620	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));	3089	av_push (av, SvREFCNT_inc_NN (ST (i)));
2621		3090
2622	av_push (av, data_sv);	3091	if ((SV *)hv == &PL_sv_undef)
2623
2624	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626	api_ready (aTHX_ self);
2627	}
2628
2629	void
2630	_set_state (SV *state)
2631	PROTOTYPE: $
2632	PPCODE:
2633	{
2634	AV *av = (AV *)SvRV (state);
2635	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636	int i;
2637
2638	errno = data->errorno;
2639	PL_laststype = data->laststype;
2640	PL_laststatval = data->laststatval;
2641	PL_statcache = data->statcache;
2642
2643	EXTEND (SP, AvFILLp (av));
2644	for (i = 0; i < AvFILLp (av); ++i)
2645	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646	}
2647
2648
2649	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651	BOOT:
2652	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654	void
2655	_schedule (...)
2656	CODE:
2657	{
2658	static int incede;
2659
2660	api_cede_notself (aTHX);
2661
2662	++incede;
2663	while (coro_nready >= incede && api_cede (aTHX))
2664	;
2665
2666	sv_setsv (sv_activity, &PL_sv_undef);
2667	if (coro_nready >= incede)
2668	{	3092	{
2669	PUSHMARK (SP);	3093	PUSHMARK (SP);
		3094	EXTEND (SP, 2);
		3095	PUSHs (sv_Coro);
		3096	PUSHs ((SV *)cv_pool_handler);
2670	PUTBACK;	3097	PUTBACK;
2671	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3098	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2672	SPAGAIN;	3099	SPAGAIN;
		3100
		3101	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2673	}	3102	}
2674		3103
2675	--incede;	3104	{
		3105	struct coro *coro = SvSTATE_hv (hv);
		3106
		3107	assert (!coro->invoke_cb);
		3108	assert (!coro->invoke_av);
		3109	coro->invoke_cb = SvREFCNT_inc (cb);
		3110	coro->invoke_av = av;
		3111	}
		3112
		3113	api_ready (aTHX_ (SV *)hv);
		3114
		3115	if (GIMME_V != G_VOID)
		3116	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3117	else
		3118	SvREFCNT_dec (hv);
2676	}	3119	}
		3120
		3121	SV *
		3122	rouse_cb ()
		3123	PROTOTYPE:
		3124	CODE:
		3125	RETVAL = coro_new_rouse_cb (aTHX);
		3126	OUTPUT:
		3127	RETVAL
		3128
		3129	void
		3130	rouse_wait (...)
		3131	PROTOTYPE: ;$
		3132	PPCODE:
		3133	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2677		3134
2678		3135
2679	MODULE = Coro::State PACKAGE = PerlIO::cede	3136	MODULE = Coro::State PACKAGE = PerlIO::cede
2680		3137
2681	BOOT:	3138	BOOT:
2682	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3139	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683		3140
		3141
2684	MODULE = Coro::State PACKAGE = Coro::Semaphore	3142	MODULE = Coro::State PACKAGE = Coro::Semaphore
2685		3143
2686	SV *	3144	SV *
2687	new (SV *klass, SV *count_ = 0)	3145	new (SV *klass, SV *count = 0)
2688	CODE:	3146	CODE:
2689	{	3147	RETVAL = sv_bless (
2690	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3148	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2691	AV *av = newAV ();	3149	GvSTASH (CvGV (cv))
2692	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	3150	);
2693	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	3151	OUTPUT:
2694	}	3152	RETVAL
		3153
		3154	# helper for Coro::Channel
		3155	SV *
		3156	_alloc (int count)
		3157	CODE:
		3158	RETVAL = coro_waitarray_new (aTHX_ count);
2695	OUTPUT:	3159	OUTPUT:
2696	RETVAL	3160	RETVAL
2697		3161
2698	SV *	3162	SV *
2699	count (SV *self)	3163	count (SV *self)
…		…
2708	adjust = 1	3172	adjust = 1
2709	CODE:	3173	CODE:
2710	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3174	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711		3175
2712	void	3176	void
2713	down (SV *self)	3177	down (...)
2714	CODE:	3178	CODE:
2715	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);	3179	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3180
		3181	void
		3182	wait (...)
		3183	CODE:
		3184	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2716		3185
2717	void	3186	void
2718	try (SV *self)	3187	try (SV *self)
2719	PPCODE:	3188	PPCODE:
2720	{	3189	{
…		…
2732	XSRETURN_NO;	3201	XSRETURN_NO;
2733	}	3202	}
2734		3203
2735	void	3204	void
2736	waiters (SV *self)	3205	waiters (SV *self)
2737	CODE:	3206	PPCODE:
2738	{	3207	{
2739	AV *av = (AV *)SvRV (self);	3208	AV *av = (AV *)SvRV (self);
		3209	int wcount = AvFILLp (av) + 1 - 1;
2740		3210
2741	if (GIMME_V == G_SCALAR)	3211	if (GIMME_V == G_SCALAR)
2742	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3212	XPUSHs (sv_2mortal (newSViv (wcount)));
2743	else	3213	else
2744	{	3214	{
2745	int i;	3215	int i;
2746	EXTEND (SP, AvFILLp (av) + 1 - 1);	3216	EXTEND (SP, wcount);
2747	for (i = 1; i <= AvFILLp (av); ++i)	3217	for (i = 1; i <= wcount; ++i)
2748	PUSHs (newSVsv (AvARRAY (av)[i]));	3218	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749	}	3219	}
2750	}	3220	}
2751		3221
		3222	MODULE = Coro::State PACKAGE = Coro::Signal
		3223
		3224	SV *
		3225	new (SV *klass)
		3226	CODE:
		3227	RETVAL = sv_bless (
		3228	coro_waitarray_new (aTHX_ 0),
		3229	GvSTASH (CvGV (cv))
		3230	);
		3231	OUTPUT:
		3232	RETVAL
		3233
		3234	void
		3235	wait (...)
		3236	CODE:
		3237	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3238
		3239	void
		3240	broadcast (SV *self)
		3241	CODE:
		3242	{
		3243	AV *av = (AV *)SvRV (self);
		3244	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3245	}
		3246
		3247	void
		3248	send (SV *self)
		3249	CODE:
		3250	{
		3251	AV *av = (AV *)SvRV (self);
		3252
		3253	if (AvFILLp (av))
		3254	coro_signal_wake (aTHX_ av, 1);
		3255	else
		3256	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3257	}
		3258
		3259	IV
		3260	awaited (SV *self)
		3261	CODE:
		3262	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3263	OUTPUT:
		3264	RETVAL
		3265
		3266
		3267	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		3268
		3269	BOOT:
		3270	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		3271
		3272	void
		3273	_schedule (...)
		3274	CODE:
		3275	{
		3276	static int incede;
		3277
		3278	api_cede_notself (aTHX);
		3279
		3280	++incede;
		3281	while (coro_nready >= incede && api_cede (aTHX))
		3282	;
		3283
		3284	sv_setsv (sv_activity, &PL_sv_undef);
		3285	if (coro_nready >= incede)
		3286	{
		3287	PUSHMARK (SP);
		3288	PUTBACK;
		3289	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		3290	}
		3291
		3292	--incede;
		3293	}
		3294
		3295
		3296	MODULE = Coro::State PACKAGE = Coro::AIO
		3297
		3298	void
		3299	_register (char *target, char *proto, SV *req)
		3300	CODE:
		3301	{
		3302	CV *req_cv = coro_sv_2cv (aTHX_ req);
		3303	/* newXSproto doesn't return the CV on 5.8 */
		3304	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3305	sv_setpv ((SV *)slf_cv, proto);
		3306	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3307	}
		3308

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