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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 1.323 by root, Sat Nov 22 06:03:10 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
		106	#ifndef Newx
		107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
		108	#endif
100		109
101	/* 5.8.7 */	110	/* 5.8.7 */
102	#ifndef SvRV_set	111	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	112	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	113	#endif
…		…
117	#endif	126	#endif
118		127
119	/* The next macros try to return the current stack pointer, in an as	128	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	129	* portable way as possible. */
121	#if __GNUC__ >= 4	130	#if __GNUC__ >= 4
		131	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	132	# define STACKLEVEL __builtin_frame_address (0)
123	#else	133	#else
124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	134	# define dSTACKLEVEL volatile void *stacklevel
		135	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	136	#endif
126		137
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	138	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		139
129	#if __GNUC__ >= 3	140	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	151	#define expect_true(expr) expect ((expr) != 0, 1)
141		152
142	#define NOINLINE attribute ((noinline))	153	#define NOINLINE attribute ((noinline))
143		154
144	#include "CoroAPI.h"	155	#include "CoroAPI.h"
		156	#define GCoroAPI (&coroapi) /* very sneaky */
145		157
146	#ifdef USE_ITHREADS	158	#ifdef USE_ITHREADS
147	# if CORO_PTHREAD	159	# if CORO_PTHREAD
148	static void *coro_thx;	160	static void *coro_thx;
149	# endif	161	# endif
150	#endif	162	#endif
151		163
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? */	164	static double (*nvtime)(); /* so why doesn't it take void? */
		165
		166	/* we hijack an hopefully unused CV flag for our purposes */
		167	#define CVf_SLF 0x4000
		168	static OP *pp_slf (pTHX);
163		169
164	static U32 cctx_gen;	170	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	171	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	172	static struct CoroAPI coroapi;
167	static AV *main_mainstack; /* used to differentiate between $main and others */	173	static AV *main_mainstack; /* used to differentiate between $main and others */
168	static JMPENV *main_top_env;	174	static JMPENV *main_top_env;
169	static HV *coro_state_stash, *coro_stash;	175	static HV *coro_state_stash, *coro_stash;
170	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	176	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171		177
		178	static AV *av_destroy; /* destruction queue */
		179	static SV *sv_manager; /* the manager coro */
		180
172	static GV *irsgv; /* $/ */	181	static GV *irsgv; /* $/ */
173	static GV *stdoutgv; /* *STDOUT */	182	static GV *stdoutgv; /* *STDOUT */
174	static SV *rv_diehook;	183	static SV *rv_diehook;
175	static SV *rv_warnhook;	184	static SV *rv_warnhook;
176	static HV *hv_sig; /* %SIG */	185	static HV *hv_sig; /* %SIG */
177		186
178	/* async_pool helper stuff */	187	/* async_pool helper stuff */
179	static SV *sv_pool_rss;	188	static SV *sv_pool_rss;
180	static SV *sv_pool_size;	189	static SV *sv_pool_size;
		190	static SV *sv_async_pool_idle; /* description string */
181	static AV *av_async_pool;	191	static AV *av_async_pool; /* idle pool */
		192	static SV *sv_Coro; /* class string */
		193	static CV *cv_pool_handler;
		194	static CV *cv_coro_state_new;
182		195
183	/* Coro::AnyEvent */	196	/* Coro::AnyEvent */
184	static SV *sv_activity;	197	static SV *sv_activity;
185		198
186	static struct coro_cctx *cctx_first;	199	static struct coro_cctx *cctx_first;
…		…
215	int valgrind_id;	228	int valgrind_id;
216	#endif	229	#endif
217	unsigned char flags;	230	unsigned char flags;
218	} coro_cctx;	231	} coro_cctx;
219		232
		233	coro_cctx *cctx_current; /* the currently running cctx */
		234
		235	/*****************************************************************************/
		236
220	enum {	237	enum {
221	CF_RUNNING = 0x0001, /* coroutine is running */	238	CF_RUNNING = 0x0001, /* coroutine is running */
222	CF_READY = 0x0002, /* coroutine is ready */	239	CF_READY = 0x0002, /* coroutine is ready */
223	CF_NEW = 0x0004, /* has never been switched to */	240	CF_NEW = 0x0004, /* has never been switched to */
224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	241	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
…		…
241	/* this is a structure representing a perl-level coroutine */	258	/* this is a structure representing a perl-level coroutine */
242	struct coro {	259	struct coro {
243	/* the C coroutine allocated to this perl coroutine, if any */	260	/* the C coroutine allocated to this perl coroutine, if any */
244	coro_cctx *cctx;	261	coro_cctx *cctx;
245		262
246	/* process data */	263	/* state data */
247	struct CoroSLF slf_frame; /* saved slf frame */	264	struct CoroSLF slf_frame; /* saved slf frame */
248	AV *mainstack;	265	AV *mainstack;
249	perl_slots *slot; /* basically the saved sp */	266	perl_slots *slot; /* basically the saved sp */
250		267
		268	CV *startcv; /* the CV to execute */
251	AV *args; /* data associated with this coroutine (initial args) */	269	AV *args; /* data associated with this coroutine (initial args) */
252	int refcnt; /* coroutines are refcounted, yes */	270	int refcnt; /* coroutines are refcounted, yes */
253	int flags; /* CF_ flags */	271	int flags; /* CF_ flags */
254	HV *hv; /* the perl hash associated with this coro, if any */	272	HV *hv; /* the perl hash associated with this coro, if any */
255	void (*on_destroy)(pTHX_ struct coro *coro);	273	void (*on_destroy)(pTHX_ struct coro *coro);
256		274
257	/* statistics */	275	/* statistics */
258	int usecount; /* number of transfers to this coro */	276	int usecount; /* number of transfers to this coro */
259		277
260	/* coro process data */	278	/* coro process data */
261	int prio;	279	int prio;
262	SV *throw; /* exception to be thrown */	280	SV *except; /* exception to be thrown */
		281	SV *rouse_cb;
263		282
264	/* async_pool */	283	/* async_pool */
265	SV *saved_deffh;	284	SV *saved_deffh;
		285	SV *invoke_cb;
		286	AV *invoke_av;
266		287
267	/* linked list */	288	/* linked list */
268	struct coro *next, *prev;	289	struct coro *next, *prev;
269	};	290	};
270		291
271	typedef struct coro *Coro__State;	292	typedef struct coro *Coro__State;
272	typedef struct coro *Coro__State_or_hashref;	293	typedef struct coro *Coro__State_or_hashref;
273		294
		295	/* the following variables are effectively part of the perl context */
		296	/* and get copied between struct coro and these variables */
		297	/* the mainr easonw e don't support windows process emulation */
274	static struct CoroSLF slf_frame; /* the current slf frame */	298	static struct CoroSLF slf_frame; /* the current slf frame */
275		299
276	/** Coro ********************************************************************/	300	/** Coro ********************************************************************/
277		301
278	#define PRIO_MAX 3	302	#define PRIO_MAX 3
…		…
284		308
285	/* for Coro.pm */	309	/* for Coro.pm */
286	static SV *coro_current;	310	static SV *coro_current;
287	static SV *coro_readyhook;	311	static SV *coro_readyhook;
288	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	312	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		313	static CV *cv_coro_run, *cv_coro_terminate;
289	static struct coro *coro_first;	314	static struct coro *coro_first;
290	#define coro_nready coroapi.nready	315	#define coro_nready coroapi.nready
291		316
292	/** lowlevel stuff **********************************************************/	317	/** lowlevel stuff **********************************************************/
293		318
…		…
319	get_hv (name, create);	344	get_hv (name, create);
320	#endif	345	#endif
321	return get_hv (name, create);	346	return get_hv (name, create);
322	}	347	}
323		348
		349	/* may croak */
		350	INLINE CV *
		351	coro_sv_2cv (pTHX_ SV *sv)
		352	{
		353	HV *st;
		354	GV *gvp;
		355	return sv_2cv (sv, &st, &gvp, 0);
		356	}
		357
324	static AV *	358	static AV *
325	coro_clone_padlist (pTHX_ CV *cv)	359	coro_derive_padlist (pTHX_ CV *cv)
326	{	360	{
327	AV *padlist = CvPADLIST (cv);	361	AV *padlist = CvPADLIST (cv);
328	AV *newpadlist, *newpad;	362	AV *newpadlist, *newpad;
329		363
330	newpadlist = newAV ();	364	newpadlist = newAV ();
…		…
380	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	414	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381		415
382	return 0;	416	return 0;
383	}	417	}
384		418
385	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	419	#define CORO_MAGIC_type_cv 26
386	#define CORO_MAGIC_type_state PERL_MAGIC_ext	420	#define CORO_MAGIC_type_state PERL_MAGIC_ext
387		421
388	static MGVTBL coro_cv_vtbl = {	422	static MGVTBL coro_cv_vtbl = {
389	0, 0, 0, 0,	423	0, 0, 0, 0,
390	coro_cv_free	424	coro_cv_free
391	};	425	};
392		426
		427	#define CORO_MAGIC_NN(sv, type) \
		428	(expect_true (SvMAGIC (sv)->mg_type == type) \
		429	? SvMAGIC (sv) \
		430	: mg_find (sv, type))
		431
393	#define CORO_MAGIC(sv, type) \	432	#define CORO_MAGIC(sv, type) \
394	expect_true (SvMAGIC (sv)) \	433	(expect_true (SvMAGIC (sv)) \
395	? expect_true (SvMAGIC (sv)->mg_type == type) \	434	? CORO_MAGIC_NN (sv, type) \
396	? SvMAGIC (sv) \
397	: mg_find (sv, type) \
398	: 0	435	: 0)
399		436
400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	437	#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)	438	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402		439
403	INLINE struct coro *	440	INLINE struct coro *
404	SvSTATE_ (pTHX_ SV *coro)	441	SvSTATE_ (pTHX_ SV *coro)
405	{	442	{
406	HV *stash;	443	HV *stash;
…		…
424	return (struct coro *)mg->mg_ptr;	461	return (struct coro *)mg->mg_ptr;
425	}	462	}
426		463
427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	464	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428		465
429	/* fastert than SvSTATE, but expects a coroutine hv */	466	/* faster than SvSTATE, but expects a coroutine hv */
430	INLINE struct coro *	467	#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))	468	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441		469
442	/* the next two functions merely cache the padlists */	470	/* the next two functions merely cache the padlists */
443	static void	471	static void
444	get_padlist (pTHX_ CV *cv)	472	get_padlist (pTHX_ CV *cv)
…		…
451	else	479	else
452	{	480	{
453	#if CORO_PREFER_PERL_FUNCTIONS	481	#if CORO_PREFER_PERL_FUNCTIONS
454	/* this is probably cleaner? but also slower! */	482	/* this is probably cleaner? but also slower! */
455	/* in practise, it seems to be less stable */	483	/* in practise, it seems to be less stable */
456	CV *cp = Perl_cv_clone (cv);	484	CV *cp = Perl_cv_clone (aTHX_ cv);
457	CvPADLIST (cv) = CvPADLIST (cp);	485	CvPADLIST (cv) = CvPADLIST (cp);
458	CvPADLIST (cp) = 0;	486	CvPADLIST (cp) = 0;
459	SvREFCNT_dec (cp);	487	SvREFCNT_dec (cp);
460	#else	488	#else
461	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	489	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462	#endif	490	#endif
463	}	491	}
464	}	492	}
465		493
466	static void	494	static void
…		…
513	}	541	}
514		542
515	PUTBACK;	543	PUTBACK;
516	}	544	}
517		545
518	slf_frame = c->slf_frame;	546	slf_frame = c->slf_frame;
		547	CORO_THROW = c->except;
519	}	548	}
520		549
521	static void	550	static void
522	save_perl (pTHX_ Coro__State c)	551	save_perl (pTHX_ Coro__State c)
523	{	552	{
		553	c->except = CORO_THROW;
524	c->slf_frame = slf_frame;	554	c->slf_frame = slf_frame;
525		555
526	{	556	{
527	dSP;	557	dSP;
528	I32 cxix = cxstack_ix;	558	I32 cxix = cxstack_ix;
…		…
603	* of perl.c:init_stacks, except that it uses less memory	633	* of perl.c:init_stacks, except that it uses less memory
604	* on the (sometimes correct) assumption that coroutines do	634	* on the (sometimes correct) assumption that coroutines do
605	* not usually need a lot of stackspace.	635	* not usually need a lot of stackspace.
606	*/	636	*/
607	#if CORO_PREFER_PERL_FUNCTIONS	637	#if CORO_PREFER_PERL_FUNCTIONS
608	# define coro_init_stacks init_stacks	638	# define coro_init_stacks(thx) init_stacks ()
609	#else	639	#else
610	static void	640	static void
611	coro_init_stacks (pTHX)	641	coro_init_stacks (pTHX)
612	{	642	{
613	PL_curstackinfo = new_stackinfo(32, 8);	643	PL_curstackinfo = new_stackinfo(32, 8);
…		…
676	#if !PERL_VERSION_ATLEAST (5,10,0)	706	#if !PERL_VERSION_ATLEAST (5,10,0)
677	Safefree (PL_retstack);	707	Safefree (PL_retstack);
678	#endif	708	#endif
679	}	709	}
680		710
		711	#define CORO_RSS \
		712	rss += sizeof (SYM (curstackinfo)); \
		713	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		714	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		715	rss += SYM (tmps_max) * sizeof (SV *); \
		716	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		717	rss += SYM (scopestack_max) * sizeof (I32); \
		718	rss += SYM (savestack_max) * sizeof (ANY);
		719
681	static size_t	720	static size_t
682	coro_rss (pTHX_ struct coro *coro)	721	coro_rss (pTHX_ struct coro *coro)
683	{	722	{
684	size_t rss = sizeof (*coro);	723	size_t rss = sizeof (*coro);
685		724
686	if (coro->mainstack)	725	if (coro->mainstack)
687	{	726	{
688	perl_slots tmp_slot;
689	perl_slots *slot;
690
691	if (coro->flags & CF_RUNNING)	727	if (coro->flags & CF_RUNNING)
692	{	728	{
693	slot = &tmp_slot;	729	#define SYM(sym) PL_ ## sym
694		730	CORO_RSS;
695	#define VAR(name,type) slot->name = PL_ ## name;
696	# include "state.h"
697	#undef VAR	731	#undef SYM
698	}	732	}
699	else	733	else
700	slot = coro->slot;
701
702	if (slot)
703	{	734	{
704	rss += sizeof (slot->curstackinfo);	735	#define SYM(sym) coro->slot->sym
705	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	736	CORO_RSS;
706	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	737	#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	}	738	}
716	}	739	}
717		740
718	return rss;	741	return rss;
719	}	742	}
…		…
821	slf_check_nop (pTHX_ struct CoroSLF *frame)	844	slf_check_nop (pTHX_ struct CoroSLF *frame)
822	{	845	{
823	return 0;	846	return 0;
824	}	847	}
825		848
826	static void	849	static int
		850	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		851	{
		852	return 1;
		853	}
		854
		855	static UNOP coro_setup_op;
		856
		857	static void NOINLINE /* noinline to keep it out of the transfer fast path */
827	coro_setup (pTHX_ struct coro *coro)	858	coro_setup (pTHX_ struct coro *coro)
828	{	859	{
829	/*	860	/*
830	* emulate part of the perl startup here.	861	* emulate part of the perl startup here.
831	*/	862	*/
…		…
858	{	889	{
859	dSP;	890	dSP;
860	UNOP myop;	891	UNOP myop;
861		892
862	Zero (&myop, 1, UNOP);	893	Zero (&myop, 1, UNOP);
863	myop.op_next = Nullop;	894	myop.op_next = Nullop;
		895	myop.op_type = OP_ENTERSUB;
864	myop.op_flags = OPf_WANT_VOID;	896	myop.op_flags = OPf_WANT_VOID;
865		897
866	PUSHMARK (SP);	898	PUSHMARK (SP);
867	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	899	PUSHs ((SV *)coro->startcv);
868	PUTBACK;	900	PUTBACK;
869	PL_op = (OP *)&myop;	901	PL_op = (OP *)&myop;
870	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	902	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871	SPAGAIN;
872	}	903	}
873		904
874	/* this newly created coroutine might be run on an existing cctx which most	905	/* 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.	906	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876	*/	907	*/
877	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	908	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 */	909	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		910
		911	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		912	coro_setup_op.op_next = PL_op;
		913	coro_setup_op.op_type = OP_ENTERSUB;
		914	coro_setup_op.op_ppaddr = pp_slf;
		915	/* no flags etc. required, as an init function won't be called */
		916
		917	PL_op = (OP *)&coro_setup_op;
		918
		919	/* copy throw, in case it was set before coro_setup */
		920	CORO_THROW = coro->except;
879	}	921	}
880		922
881	static void	923	static void
882	coro_destruct (pTHX_ struct coro *coro)	924	coro_destruct (pTHX_ struct coro *coro)
883	{	925	{
…		…
907		949
908	SvREFCNT_dec (PL_diehook);	950	SvREFCNT_dec (PL_diehook);
909	SvREFCNT_dec (PL_warnhook);	951	SvREFCNT_dec (PL_warnhook);
910		952
911	SvREFCNT_dec (coro->saved_deffh);	953	SvREFCNT_dec (coro->saved_deffh);
912	SvREFCNT_dec (coro->throw);	954	SvREFCNT_dec (coro->rouse_cb);
		955	SvREFCNT_dec (coro->invoke_cb);
		956	SvREFCNT_dec (coro->invoke_av);
913		957
914	coro_destruct_stacks (aTHX);	958	coro_destruct_stacks (aTHX);
915	}	959	}
916		960
917	INLINE void	961	INLINE void
…		…
927	static int	971	static int
928	runops_trace (pTHX)	972	runops_trace (pTHX)
929	{	973	{
930	COP *oldcop = 0;	974	COP *oldcop = 0;
931	int oldcxix = -2;	975	int oldcxix = -2;
932	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933	coro_cctx *cctx = coro->cctx;
934		976
935	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	977	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936	{	978	{
937	PERL_ASYNC_CHECK ();	979	PERL_ASYNC_CHECK ();
938		980
939	if (cctx->flags & CC_TRACE_ALL)	981	if (cctx_current->flags & CC_TRACE_ALL)
940	{	982	{
941	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	983	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942	{	984	{
943	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	985	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944	SV **bot, **top;	986	SV **bot, **top;
945	AV *av = newAV (); /* return values */	987	AV *av = newAV (); /* return values */
946	SV **cb;	988	SV **cb;
…		…
983		1025
984	if (PL_curcop != &PL_compiling)	1026	if (PL_curcop != &PL_compiling)
985	{	1027	{
986	SV **cb;	1028	SV **cb;
987		1029
988	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1030	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989	{	1031	{
990	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1032	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991		1033
992	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1034	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993	{	1035	{
994	runops_proc_t old_runops = PL_runops;
995	dSP;	1036	dSP;
996	GV *gv = CvGV (cx->blk_sub.cv);	1037	GV *gv = CvGV (cx->blk_sub.cv);
997	SV *fullname = sv_2mortal (newSV (0));	1038	SV *fullname = sv_2mortal (newSV (0));
998		1039
999	if (isGV (gv))	1040	if (isGV (gv))
…		…
1004	SAVETMPS;	1045	SAVETMPS;
1005	EXTEND (SP, 3);	1046	EXTEND (SP, 3);
1006	PUSHMARK (SP);	1047	PUSHMARK (SP);
1007	PUSHs (&PL_sv_yes);	1048	PUSHs (&PL_sv_yes);
1008	PUSHs (fullname);	1049	PUSHs (fullname);
1009	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1050	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010	PUTBACK;	1051	PUTBACK;
1011	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1052	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);	1053	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013	SPAGAIN;	1054	SPAGAIN;
1014	FREETMPS;	1055	FREETMPS;
…		…
1017	}	1058	}
1018		1059
1019	oldcxix = cxstack_ix;	1060	oldcxix = cxstack_ix;
1020	}	1061	}
1021		1062
1022	if (cctx->flags & CC_TRACE_LINE)	1063	if (cctx_current->flags & CC_TRACE_LINE)
1023	{	1064	{
1024	dSP;	1065	dSP;
1025		1066
1026	PL_runops = RUNOPS_DEFAULT;	1067	PL_runops = RUNOPS_DEFAULT;
1027	ENTER;	1068	ENTER;
…		…
1046		1087
1047	TAINT_NOT;	1088	TAINT_NOT;
1048	return 0;	1089	return 0;
1049	}	1090	}
1050		1091
		1092	static struct CoroSLF cctx_ssl_frame;
		1093
1051	static void	1094	static void
1052	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1095	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053	{	1096	{
1054	ta->prev = (struct coro *)cctx;
1055	ta->next = 0;	1097	ta->prev = 0;
1056	}	1098	}
1057		1099
1058	/* inject a fake call to Coro::State::_cctx_init into the execution */	1100	static int
1059	/* _cctx_init should be careful, as it could be called at almost any time */	1101	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060	/* during execution of a perl program */	1102	{
1061	/* also initialises PL_top_env */	1103	*frame = cctx_ssl_frame;
		1104
		1105	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1106	}
		1107
		1108	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062	static void NOINLINE	1109	static void NOINLINE
1063	cctx_prepare (pTHX_ coro_cctx *cctx)	1110	cctx_prepare (pTHX)
1064	{	1111	{
1065	dSP;
1066	UNOP myop;
1067
1068	PL_top_env = &PL_start_env;	1112	PL_top_env = &PL_start_env;
1069		1113
1070	if (cctx->flags & CC_TRACE)	1114	if (cctx_current->flags & CC_TRACE)
1071	PL_runops = runops_trace;	1115	PL_runops = runops_trace;
1072		1116
1073	Zero (&myop, 1, UNOP);	1117	/* we already must be executing an SLF op, there is no other valid way
1074	myop.op_next = PL_op;	1118	* that can lead to creation of a new cctx */
1075	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1119	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1120	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076		1121
1077	PUSHMARK (SP);	1122	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078	EXTEND (SP, 2);	1123	cctx_ssl_frame = slf_frame;
1079	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1124
1080	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1125	slf_frame.prepare = slf_prepare_set_stacklevel;
1081	PUTBACK;	1126	slf_frame.check = slf_check_set_stacklevel;
1082	PL_op = (OP *)&myop;
1083	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084	SPAGAIN;
1085	}	1127	}
1086		1128
1087	/* the tail of transfer: execute stuff we can only do after a transfer */	1129	/* the tail of transfer: execute stuff we can only do after a transfer */
1088	INLINE void	1130	INLINE void
1089	transfer_tail (pTHX)	1131	transfer_tail (pTHX)
…		…
1108	/* normally we would need to skip the entersub here */	1150	/* normally we would need to skip the entersub here */
1109	/* not doing so will re-execute it, which is exactly what we want */	1151	/* not doing so will re-execute it, which is exactly what we want */
1110	/* PL_nop = PL_nop->op_next */	1152	/* PL_nop = PL_nop->op_next */
1111		1153
1112	/* inject a fake subroutine call to cctx_init */	1154	/* inject a fake subroutine call to cctx_init */
1113	cctx_prepare (aTHX_ (coro_cctx *)arg);	1155	cctx_prepare (aTHX);
1114		1156
1115	/* cctx_run is the alternative tail of transfer() */	1157	/* cctx_run is the alternative tail of transfer() */
1116	transfer_tail (aTHX);	1158	transfer_tail (aTHX);
1117		1159
1118	/* somebody or something will hit me for both perl_run and PL_restartop */	1160	/* somebody or something will hit me for both perl_run and PL_restartop */
1119	PL_restartop = PL_op;	1161	PL_restartop = PL_op;
1120	perl_run (PL_curinterp);	1162	perl_run (PL_curinterp);
		1163	/*
		1164	* Unfortunately, there is no way to get at the return values of the
		1165	* coro body here, as perl_run destroys these
		1166	*/
1121		1167
1122	/*	1168	/*
1123	* If perl-run returns we assume exit() was being called or the coro	1169	* 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)	1170	* 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	1171	* reason for perl_run to return. We try to exit by jumping to the
…		…
1209	cctx_destroy (coro_cctx *cctx)	1255	cctx_destroy (coro_cctx *cctx)
1210	{	1256	{
1211	if (!cctx)	1257	if (!cctx)
1212	return;	1258	return;
1213		1259
		1260	assert (cctx != cctx_current);//D temporary
		1261
1214	--cctx_count;	1262	--cctx_count;
1215	coro_destroy (&cctx->cctx);	1263	coro_destroy (&cctx->cctx);
1216		1264
1217	/* coro_transfer creates new, empty cctx's */	1265	/* coro_transfer creates new, empty cctx's */
1218	if (cctx->sptr)	1266	if (cctx->sptr)
…		…
1276	/** coroutine switching *****************************************************/	1324	/** coroutine switching *****************************************************/
1277		1325
1278	static void	1326	static void
1279	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1327	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280	{	1328	{
		1329	/* TODO: throwing up here is considered harmful */
		1330
1281	if (expect_true (prev != next))	1331	if (expect_true (prev != next))
1282	{	1332	{
1283	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1333	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,");	1334	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285		1335
…		…
1295	#endif	1345	#endif
1296	}	1346	}
1297	}	1347	}
1298		1348
1299	/* always use the TRANSFER macro */	1349	/* always use the TRANSFER macro */
1300	static void NOINLINE	1350	static void NOINLINE /* noinline so we have a fixed stackframe */
1301	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1351	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302	{	1352	{
1303	dSTACKLEVEL;	1353	dSTACKLEVEL;
1304		1354
1305	/* sometimes transfer is only called to set idle_sp */	1355	/* sometimes transfer is only called to set idle_sp */
1306	if (expect_false (!next))	1356	if (expect_false (!prev))
1307	{	1357	{
1308	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1358	cctx_current->idle_sp = STACKLEVEL;
1309	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1359	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310	}	1360	}
1311	else if (expect_true (prev != next))	1361	else if (expect_true (prev != next))
1312	{	1362	{
1313	coro_cctx *prev__cctx;	1363	coro_cctx *cctx_prev;
1314		1364
1315	if (expect_false (prev->flags & CF_NEW))	1365	if (expect_false (prev->flags & CF_NEW))
1316	{	1366	{
1317	/* create a new empty/source context */	1367	/* create a new empty/source context */
1318	prev->cctx = cctx_new_empty ();
1319	prev->flags &= ~CF_NEW;	1368	prev->flags &= ~CF_NEW;
1320	prev->flags |= CF_RUNNING;	1369	prev->flags |= CF_RUNNING;
1321	}	1370	}
1322		1371
1323	prev->flags &= ~CF_RUNNING;	1372	prev->flags &= ~CF_RUNNING;
…		…
1334	coro_setup (aTHX_ next);	1383	coro_setup (aTHX_ next);
1335	}	1384	}
1336	else	1385	else
1337	load_perl (aTHX_ next);	1386	load_perl (aTHX_ next);
1338		1387
1339	prev__cctx = prev->cctx;
1340
1341	/* possibly untie and reuse the cctx */	1388	/* possibly untie and reuse the cctx */
1342	if (expect_true (	1389	if (expect_true (
1343	prev__cctx->idle_sp == (void *)stacklevel	1390	cctx_current->idle_sp == STACKLEVEL
1344	&& !(prev__cctx->flags & CC_TRACE)	1391	&& !(cctx_current->flags & CC_TRACE)
1345	&& !force_cctx	1392	&& !force_cctx
1346	))	1393	))
1347	{	1394	{
1348	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1395	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1396	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350
1351	prev->cctx = 0;
1352		1397
1353	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1398	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1354	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1399	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1355	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1400	if (expect_false (CCTX_EXPIRED (cctx_current)))
1356	if (!next->cctx)	1401	if (!next->cctx)
1357	next->cctx = cctx_get (aTHX);	1402	next->cctx = cctx_get (aTHX);
1358		1403
1359	cctx_put (prev__cctx);	1404	cctx_put (cctx_current);
		1405	assert (!prev->cctx);//D temporary
1360	}	1406	}
		1407	else
		1408	prev->cctx = cctx_current;
1361		1409
1362	++next->usecount;	1410	++next->usecount;
1363		1411
1364	if (expect_true (!next->cctx))	1412	cctx_prev = cctx_current;
1365	next->cctx = cctx_get (aTHX);	1413	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366		1414
1367	if (expect_false (prev__cctx != next->cctx))	1415	next->cctx = 0;
		1416
		1417	if (expect_false (cctx_prev != cctx_current))
1368	{	1418	{
1369	prev__cctx->top_env = PL_top_env;	1419	cctx_prev->top_env = PL_top_env;
1370	PL_top_env = next->cctx->top_env;	1420	PL_top_env = cctx_current->top_env;
1371	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1421	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372	}	1422	}
1373		1423
1374	transfer_tail (aTHX);	1424	transfer_tail (aTHX);
1375	}	1425	}
1376	}	1426	}
…		…
1415		1465
1416	coro->slot = 0;	1466	coro->slot = 0;
1417	}	1467	}
1418		1468
1419	cctx_destroy (coro->cctx);	1469	cctx_destroy (coro->cctx);
		1470	SvREFCNT_dec (coro->startcv);
1420	SvREFCNT_dec (coro->args);	1471	SvREFCNT_dec (coro->args);
		1472	SvREFCNT_dec (CORO_THROW);
1421		1473
1422	if (coro->next) coro->next->prev = coro->prev;	1474	if (coro->next) coro->next->prev = coro->prev;
1423	if (coro->prev) coro->prev->next = coro->next;	1475	if (coro->prev) coro->prev->next = coro->next;
1424	if (coro == coro_first) coro_first = coro->next;	1476	if (coro == coro_first) coro_first = coro->next;
1425		1477
…		…
1479		1531
1480	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1532	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481	TRANSFER (ta, 1);	1533	TRANSFER (ta, 1);
1482	}	1534	}
1483		1535
		1536	/*****************************************************************************/
		1537	/* gensub: simple closure generation utility */
		1538
		1539	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1540
		1541	/* create a closure from XS, returns a code reference */
		1542	/* the arg can be accessed via GENSUB_ARG from the callback */
		1543	/* the callback must use dXSARGS/XSRETURN */
		1544	static SV *
		1545	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1546	{
		1547	CV *cv = (CV *)newSV (0);
		1548
		1549	sv_upgrade ((SV *)cv, SVt_PVCV);
		1550
		1551	CvANON_on (cv);
		1552	CvISXSUB_on (cv);
		1553	CvXSUB (cv) = xsub;
		1554	GENSUB_ARG = arg;
		1555
		1556	return newRV_noinc ((SV *)cv);
		1557	}
		1558
1484	/** Coro ********************************************************************/	1559	/** Coro ********************************************************************/
1485		1560
1486	INLINE void	1561	INLINE void
1487	coro_enq (pTHX_ struct coro *coro)	1562	coro_enq (pTHX_ struct coro *coro)
1488	{	1563	{
…		…
1531	ENTER;	1606	ENTER;
1532	SAVETMPS;	1607	SAVETMPS;
1533		1608
1534	PUSHMARK (SP);	1609	PUSHMARK (SP);
1535	PUTBACK;	1610	PUTBACK;
1536	call_sv (sv_hook, G_DISCARD);	1611	call_sv (sv_hook, G_VOID | G_DISCARD);
1537	SPAGAIN;
1538		1612
1539	FREETMPS;	1613	FREETMPS;
1540	LEAVE;	1614	LEAVE;
1541	}	1615	}
1542		1616
…		…
1550	api_is_ready (pTHX_ SV *coro_sv)	1624	api_is_ready (pTHX_ SV *coro_sv)
1551	{	1625	{
1552	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1626	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553	}	1627	}
1554		1628
		1629	/* expects to own a reference to next->hv */
1555	INLINE void	1630	INLINE void
		1631	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
		1632	{
		1633	SV *prev_sv = SvRV (coro_current);
		1634
		1635	ta->prev = SvSTATE_hv (prev_sv);
		1636	ta->next = next;
		1637
		1638	TRANSFER_CHECK (*ta);
		1639
		1640	SvRV_set (coro_current, (SV *)next->hv);
		1641
		1642	free_coro_mortal (aTHX);
		1643	coro_mortal = prev_sv;
		1644	}
		1645
		1646	static void
1556	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1647	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1557	{	1648	{
1558	SV *prev_sv, *next_sv;
1559
1560	for (;;)	1649	for (;;)
1561	{	1650	{
1562	next_sv = coro_deq (aTHX);	1651	SV *next_sv = coro_deq (aTHX);
1563		1652
1564	/* nothing to schedule: call the idle handler */
1565	if (expect_false (!next_sv))	1653	if (expect_true (next_sv))
1566	{	1654	{
		1655	struct coro *next = SvSTATE_hv (next_sv);
		1656
		1657	/* cannot transfer to destroyed coros, skip and look for next */
		1658	if (expect_false (next->flags & CF_DESTROYED))
		1659	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
		1660	else
		1661	{
		1662	next->flags &= ~CF_READY;
		1663	--coro_nready;
		1664
		1665	prepare_schedule_to (aTHX_ ta, next);
		1666	break;
		1667	}
		1668	}
		1669	else
		1670	{
		1671	/* nothing to schedule: call the idle handler */
1567	dSP;	1672	dSP;
1568		1673
1569	ENTER;	1674	ENTER;
1570	SAVETMPS;	1675	SAVETMPS;
1571		1676
1572	PUSHMARK (SP);	1677	PUSHMARK (SP);
1573	PUTBACK;	1678	PUTBACK;
1574	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1679	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1575	SPAGAIN;
1576		1680
1577	FREETMPS;	1681	FREETMPS;
1578	LEAVE;	1682	LEAVE;
1579	continue;
1580	}	1683	}
1581
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	{
1587	SvREFCNT_dec (next_sv);
1588	/* coro_nready has already been taken care of by destroy */
1589	continue;
1590	}
1591
1592	--coro_nready;
1593	break;
1594	}	1684	}
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	}	1685	}
1607		1686
1608	INLINE void	1687	INLINE void
1609	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1688	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610	{	1689	{
…		…
1631	{	1710	{
1632	struct coro_transfer_args ta;	1711	struct coro_transfer_args ta;
1633		1712
1634	prepare_schedule (aTHX_ &ta);	1713	prepare_schedule (aTHX_ &ta);
1635	TRANSFER (ta, 1);	1714	TRANSFER (ta, 1);
		1715	}
		1716
		1717	static void
		1718	api_schedule_to (pTHX_ SV *coro_sv)
		1719	{
		1720	struct coro_transfer_args ta;
		1721	struct coro *next = SvSTATE (coro_sv);
		1722
		1723	SvREFCNT_inc_NN (coro_sv);
		1724	prepare_schedule_to (aTHX_ &ta, next);
1636	}	1725	}
1637		1726
1638	static int	1727	static int
1639	api_cede (pTHX)	1728	api_cede (pTHX)
1640	{	1729	{
…		…
1687	if (coro->flags & CF_RUNNING)	1776	if (coro->flags & CF_RUNNING)
1688	PL_runops = RUNOPS_DEFAULT;	1777	PL_runops = RUNOPS_DEFAULT;
1689	else	1778	else
1690	coro->slot->runops = RUNOPS_DEFAULT;	1779	coro->slot->runops = RUNOPS_DEFAULT;
1691	}	1780	}
		1781	}
		1782
		1783	static void
		1784	coro_call_on_destroy (pTHX_ struct coro *coro)
		1785	{
		1786	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1787	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1788
		1789	if (on_destroyp)
		1790	{
		1791	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1792
		1793	while (AvFILLp (on_destroy) >= 0)
		1794	{
		1795	dSP; /* don't disturb outer sp */
		1796	SV *cb = av_pop (on_destroy);
		1797
		1798	PUSHMARK (SP);
		1799
		1800	if (statusp)
		1801	{
		1802	int i;
		1803	AV *status = (AV *)SvRV (*statusp);
		1804	EXTEND (SP, AvFILLp (status) + 1);
		1805
		1806	for (i = 0; i <= AvFILLp (status); ++i)
		1807	PUSHs (AvARRAY (status)[i]);
		1808	}
		1809
		1810	PUTBACK;
		1811	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1812	}
		1813	}
		1814	}
		1815
		1816	static void
		1817	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1818	{
		1819	int i;
		1820	HV *hv = (HV *)SvRV (coro_current);
		1821	AV *av = newAV ();
		1822
		1823	av_extend (av, items - 1);
		1824	for (i = 0; i < items; ++i)
		1825	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1826
		1827	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1828
		1829	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		1830	api_ready (aTHX_ sv_manager);
		1831
		1832	frame->prepare = prepare_schedule;
		1833	frame->check = slf_check_repeat;
		1834	}
		1835
		1836	/*****************************************************************************/
		1837	/* async pool handler */
		1838
		1839	static int
		1840	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1841	{
		1842	HV *hv = (HV *)SvRV (coro_current);
		1843	struct coro *coro = (struct coro *)frame->data;
		1844
		1845	if (!coro->invoke_cb)
		1846	return 1; /* loop till we have invoke */
		1847	else
		1848	{
		1849	hv_store (hv, "desc", sizeof ("desc") - 1,
		1850	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1851
		1852	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1853
		1854	{
		1855	dSP;
		1856	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1857	PUTBACK;
		1858	}
		1859
		1860	SvREFCNT_dec (GvAV (PL_defgv));
		1861	GvAV (PL_defgv) = coro->invoke_av;
		1862	coro->invoke_av = 0;
		1863
		1864	return 0;
		1865	}
		1866	}
		1867
		1868	static void
		1869	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1870	{
		1871	HV *hv = (HV *)SvRV (coro_current);
		1872	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1873
		1874	if (expect_true (coro->saved_deffh))
		1875	{
		1876	/* subsequent iteration */
		1877	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1878	coro->saved_deffh = 0;
		1879
		1880	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1881	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1882	{
		1883	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1884	coro->invoke_av = newAV ();
		1885
		1886	frame->prepare = prepare_nop;
		1887	}
		1888	else
		1889	{
		1890	av_clear (GvAV (PL_defgv));
		1891	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1892
		1893	coro->prio = 0;
		1894
		1895	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1896	api_trace (aTHX_ coro_current, 0);
		1897
		1898	frame->prepare = prepare_schedule;
		1899	av_push (av_async_pool, SvREFCNT_inc (hv));
		1900	}
		1901	}
		1902	else
		1903	{
		1904	/* first iteration, simply fall through */
		1905	frame->prepare = prepare_nop;
		1906	}
		1907
		1908	frame->check = slf_check_pool_handler;
		1909	frame->data = (void *)coro;
		1910	}
		1911
		1912	/*****************************************************************************/
		1913	/* rouse callback */
		1914
		1915	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1916
		1917	static void
		1918	coro_rouse_callback (pTHX_ CV *cv)
		1919	{
		1920	dXSARGS;
		1921	SV *data = (SV *)GENSUB_ARG;
		1922
		1923	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1924	{
		1925	/* first call, set args */
		1926	AV *av = newAV ();
		1927	SV *coro = SvRV (data);
		1928
		1929	SvRV_set (data, (SV *)av);
		1930	api_ready (aTHX_ coro);
		1931	SvREFCNT_dec (coro);
		1932
		1933	/* better take a full copy of the arguments */
		1934	while (items--)
		1935	av_store (av, items, newSVsv (ST (items)));
		1936	}
		1937
		1938	XSRETURN_EMPTY;
		1939	}
		1940
		1941	static int
		1942	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1943	{
		1944	SV *data = (SV *)frame->data;
		1945
		1946	if (CORO_THROW)
		1947	return 0;
		1948
		1949	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1950	return 1;
		1951
		1952	/* now push all results on the stack */
		1953	{
		1954	dSP;
		1955	AV *av = (AV *)SvRV (data);
		1956	int i;
		1957
		1958	EXTEND (SP, AvFILLp (av) + 1);
		1959	for (i = 0; i <= AvFILLp (av); ++i)
		1960	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1961
		1962	/* we have stolen the elements, so ste length to zero and free */
		1963	AvFILLp (av) = -1;
		1964	av_undef (av);
		1965
		1966	PUTBACK;
		1967	}
		1968
		1969	return 0;
		1970	}
		1971
		1972	static void
		1973	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1974	{
		1975	SV *cb;
		1976
		1977	if (items)
		1978	cb = arg [0];
		1979	else
		1980	{
		1981	struct coro *coro = SvSTATE_current;
		1982
		1983	if (!coro->rouse_cb)
		1984	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1985
		1986	cb = sv_2mortal (coro->rouse_cb);
		1987	coro->rouse_cb = 0;
		1988	}
		1989
		1990	if (!SvROK (cb)
		1991	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1992	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1993	croak ("Coro::rouse_wait called with illegal callback argument,");
		1994
		1995	{
		1996	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1997	SV *data = (SV *)GENSUB_ARG;
		1998
		1999	frame->data = (void *)data;
		2000	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		2001	frame->check = slf_check_rouse_wait;
		2002	}
		2003	}
		2004
		2005	static SV *
		2006	coro_new_rouse_cb (pTHX)
		2007	{
		2008	HV *hv = (HV *)SvRV (coro_current);
		2009	struct coro *coro = SvSTATE_hv (hv);
		2010	SV *data = newRV_inc ((SV *)hv);
		2011	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		2012
		2013	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		2014	SvREFCNT_dec (data); /* magicext increases the refcount */
		2015
		2016	SvREFCNT_dec (coro->rouse_cb);
		2017	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		2018
		2019	return cb;
		2020	}
		2021
		2022	/*****************************************************************************/
		2023	/* schedule-like-function opcode (SLF) */
		2024
		2025	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		2026	static const CV *slf_cv;
		2027	static SV **slf_argv;
		2028	static int slf_argc, slf_arga; /* count, allocated */
		2029	static I32 slf_ax; /* top of stack, for restore */
		2030
		2031	/* this restores the stack in the case we patched the entersub, to */
		2032	/* recreate the stack frame as perl will on following calls */
		2033	/* since entersub cleared the stack */
		2034	static OP *
		2035	pp_restore (pTHX)
		2036	{
		2037	int i;
		2038	SV **SP = PL_stack_base + slf_ax;
		2039
		2040	PUSHMARK (SP);
		2041
		2042	EXTEND (SP, slf_argc + 1);
		2043
		2044	for (i = 0; i < slf_argc; ++i)
		2045	PUSHs (sv_2mortal (slf_argv [i]));
		2046
		2047	PUSHs ((SV *)CvGV (slf_cv));
		2048
		2049	RETURNOP (slf_restore.op_first);
		2050	}
		2051
		2052	static void
		2053	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		2054	{
		2055	SV **arg = (SV **)slf_frame.data;
		2056
		2057	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		2058	}
		2059
		2060	static void
		2061	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2062	{
		2063	if (items != 2)
		2064	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		2065
		2066	frame->prepare = slf_prepare_transfer;
		2067	frame->check = slf_check_nop;
		2068	frame->data = (void *)arg; /* let's hope it will stay valid */
		2069	}
		2070
		2071	static void
		2072	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2073	{
		2074	frame->prepare = prepare_schedule;
		2075	frame->check = slf_check_nop;
		2076	}
		2077
		2078	static void
		2079	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2080	{
		2081	struct coro *next = (struct coro *)slf_frame.data;
		2082
		2083	SvREFCNT_inc_NN (next->hv);
		2084	prepare_schedule_to (aTHX_ ta, next);
		2085	}
		2086
		2087	static void
		2088	slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2089	{
		2090	if (!items)
		2091	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2092
		2093	frame->data = (void *)SvSTATE (arg [0]);
		2094	frame->prepare = slf_prepare_schedule_to;
		2095	frame->check = slf_check_nop;
		2096	}
		2097
		2098	static void
		2099	slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2100	{
		2101	api_ready (aTHX_ SvRV (coro_current));
		2102
		2103	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
		2104	}
		2105
		2106	static void
		2107	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2108	{
		2109	frame->prepare = prepare_cede;
		2110	frame->check = slf_check_nop;
		2111	}
		2112
		2113	static void
		2114	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2115	{
		2116	frame->prepare = prepare_cede_notself;
		2117	frame->check = slf_check_nop;
		2118	}
		2119
		2120	/*
		2121	* these not obviously related functions are all rolled into one
		2122	* function to increase chances that they all will call transfer with the same
		2123	* stack offset
		2124	* SLF stands for "schedule-like-function".
		2125	*/
		2126	static OP *
		2127	pp_slf (pTHX)
		2128	{
		2129	I32 checkmark; /* mark SP to see how many elements check has pushed */
		2130
		2131	/* set up the slf frame, unless it has already been set-up */
		2132	/* the latter happens when a new coro has been started */
		2133	/* or when a new cctx was attached to an existing coroutine */
		2134	if (expect_true (!slf_frame.prepare))
		2135	{
		2136	/* first iteration */
		2137	dSP;
		2138	SV **arg = PL_stack_base + TOPMARK + 1;
		2139	int items = SP - arg; /* args without function object */
		2140	SV *gv = *sp;
		2141
		2142	/* do a quick consistency check on the "function" object, and if it isn't */
		2143	/* for us, divert to the real entersub */
		2144	if (SvTYPE (gv) != SVt_PVGV
		2145	|| !GvCV (gv)
		2146	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		2147	return PL_ppaddr[OP_ENTERSUB](aTHX);
		2148
		2149	if (!(PL_op->op_flags & OPf_STACKED))
		2150	{
		2151	/* ampersand-form of call, use @_ instead of stack */
		2152	AV *av = GvAV (PL_defgv);
		2153	arg = AvARRAY (av);
		2154	items = AvFILLp (av) + 1;
		2155	}
		2156
		2157	/* now call the init function, which needs to set up slf_frame */
		2158	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		2159	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		2160
		2161	/* pop args */
		2162	SP = PL_stack_base + POPMARK;
		2163
		2164	PUTBACK;
		2165	}
		2166
		2167	/* now that we have a slf_frame, interpret it! */
		2168	/* we use a callback system not to make the code needlessly */
		2169	/* complicated, but so we can run multiple perl coros from one cctx */
		2170
		2171	do
		2172	{
		2173	struct coro_transfer_args ta;
		2174
		2175	slf_frame.prepare (aTHX_ &ta);
		2176	TRANSFER (ta, 0);
		2177
		2178	checkmark = PL_stack_sp - PL_stack_base;
		2179	}
		2180	while (slf_frame.check (aTHX_ &slf_frame));
		2181
		2182	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		2183
		2184	/* exception handling */
		2185	if (expect_false (CORO_THROW))
		2186	{
		2187	SV *exception = sv_2mortal (CORO_THROW);
		2188
		2189	CORO_THROW = 0;
		2190	sv_setsv (ERRSV, exception);
		2191	croak (0);
		2192	}
		2193
		2194	/* return value handling - mostly like entersub */
		2195	/* make sure we put something on the stack in scalar context */
		2196	if (GIMME_V == G_SCALAR)
		2197	{
		2198	dSP;
		2199	SV **bot = PL_stack_base + checkmark;
		2200
		2201	if (sp == bot) /* too few, push undef */
		2202	bot [1] = &PL_sv_undef;
		2203	else if (sp != bot + 1) /* too many, take last one */
		2204	bot [1] = *sp;
		2205
		2206	SP = bot + 1;
		2207
		2208	PUTBACK;
		2209	}
		2210
		2211	return NORMAL;
		2212	}
		2213
		2214	static void
		2215	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2216	{
		2217	int i;
		2218	SV **arg = PL_stack_base + ax;
		2219	int items = PL_stack_sp - arg + 1;
		2220
		2221	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2222
		2223	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2224	&& PL_op->op_ppaddr != pp_slf)
		2225	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2226
		2227	CvFLAGS (cv) |= CVf_SLF;
		2228	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2229	slf_cv = cv;
		2230
		2231	/* we patch the op, and then re-run the whole call */
		2232	/* we have to put the same argument on the stack for this to work */
		2233	/* and this will be done by pp_restore */
		2234	slf_restore.op_next = (OP *)&slf_restore;
		2235	slf_restore.op_type = OP_CUSTOM;
		2236	slf_restore.op_ppaddr = pp_restore;
		2237	slf_restore.op_first = PL_op;
		2238
		2239	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2240
		2241	if (PL_op->op_flags & OPf_STACKED)
		2242	{
		2243	if (items > slf_arga)
		2244	{
		2245	slf_arga = items;
		2246	free (slf_argv);
		2247	slf_argv = malloc (slf_arga * sizeof (SV *));
		2248	}
		2249
		2250	slf_argc = items;
		2251
		2252	for (i = 0; i < items; ++i)
		2253	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2254	}
		2255	else
		2256	slf_argc = 0;
		2257
		2258	PL_op->op_ppaddr = pp_slf;
		2259	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
		2260
		2261	PL_op = (OP *)&slf_restore;
1692	}	2262	}
1693		2263
1694	/*****************************************************************************/	2264	/*****************************************************************************/
1695	/* PerlIO::cede */	2265	/* PerlIO::cede */
1696		2266
…		…
1765	PerlIOBuf_get_cnt,	2335	PerlIOBuf_get_cnt,
1766	PerlIOBuf_set_ptrcnt,	2336	PerlIOBuf_set_ptrcnt,
1767	};	2337	};
1768		2338
1769	/*****************************************************************************/	2339	/*****************************************************************************/
		2340	/* Coro::Semaphore & Coro::Signal */
1770		2341
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 *	2342	static SV *
1782	pp_restore (pTHX)	2343	coro_waitarray_new (pTHX_ int count)
1783	{	2344	{
1784	dSP;	2345	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2346	AV *av = newAV ();
		2347	SV **ary;
1785		2348
1786	PUSHMARK (SP);	2349	/* unfortunately, building manually saves memory */
		2350	Newx (ary, 2, SV *);
		2351	AvALLOC (av) = ary;
		2352	/*AvARRAY (av) = ary;*/
		2353	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2354	AvMAX (av) = 1;
		2355	AvFILLp (av) = 0;
		2356	ary [0] = newSViv (count);
1787		2357
1788	EXTEND (SP, 3);	2358	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	}	2359	}
1796		2360
1797	static void	2361	/* 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		2362
1999	static void	2363	static void
2000	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)	2364	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001	{	2365	{
2002	SV *count_sv = AvARRAY (av)[0];	2366	SV *count_sv = AvARRAY (av)[0];
…		…
2014	AvARRAY (av)[0] = AvARRAY (av)[1];	2378	AvARRAY (av)[0] = AvARRAY (av)[1];
2015	AvARRAY (av)[1] = count_sv;	2379	AvARRAY (av)[1] = count_sv;
2016	cb = av_shift (av);	2380	cb = av_shift (av);
2017		2381
2018	if (SvOBJECT (cb))	2382	if (SvOBJECT (cb))
		2383	{
2019	api_ready (aTHX_ cb);	2384	api_ready (aTHX_ cb);
2020	else	2385	--count;
2021	croak ("callbacks not yet supported");	2386	}
		2387	else if (SvTYPE (cb) == SVt_PVCV)
		2388	{
		2389	dSP;
		2390	PUSHMARK (SP);
		2391	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2392	PUTBACK;
		2393	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2394	}
2022		2395
2023	SvREFCNT_dec (cb);	2396	SvREFCNT_dec (cb);
2024
2025	--count;
2026	}	2397	}
2027	}	2398	}
2028		2399
2029	static void	2400	static void
2030	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2401	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
…		…
2032	/* call $sem->adjust (0) to possibly wake up some other waiters */	2403	/* call $sem->adjust (0) to possibly wake up some other waiters */
2033	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2404	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2034	}	2405	}
2035		2406
2036	static int	2407	static int
2037	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2408	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2038	{	2409	{
2039	AV *av = (AV *)frame->data;	2410	AV *av = (AV *)frame->data;
2040	SV *count_sv = AvARRAY (av)[0];	2411	SV *count_sv = AvARRAY (av)[0];
2041		2412
		2413	/* if we are about to throw, don't actually acquire the lock, just throw */
		2414	if (CORO_THROW)
		2415	return 0;
2042	if (SvIVX (count_sv) > 0)	2416	else if (SvIVX (count_sv) > 0)
2043	{	2417	{
2044	SvSTATE_current->on_destroy = 0;	2418	SvSTATE_current->on_destroy = 0;
		2419
		2420	if (acquire)
2045	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2421	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2422	else
		2423	coro_semaphore_adjust (aTHX_ av, 0);
		2424
2046	return 0;	2425	return 0;
2047	}	2426	}
2048	else	2427	else
2049	{	2428	{
2050	int i;	2429	int i;
…		…
2059	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2438	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060	return 1;	2439	return 1;
2061	}	2440	}
2062	}	2441	}
2063		2442
2064	static void	2443	static int
		2444	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2445	{
		2446	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2447	}
		2448
		2449	static int
		2450	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2451	{
		2452	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2453	}
		2454
		2455	static void
2065	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2456	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066	{	2457	{
2067	AV *av = (AV *)SvRV (arg [0]);	2458	AV *av = (AV *)SvRV (arg [0]);
2068		2459
2069	if (SvIVX (AvARRAY (av)[0]) > 0)	2460	if (SvIVX (AvARRAY (av)[0]) > 0)
2070	{	2461	{
2071	frame->data = (void *)av;	2462	frame->data = (void *)av;
2072	frame->prepare = prepare_nop;	2463	frame->prepare = prepare_nop;
2073	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074	}	2464	}
2075	else	2465	else
2076	{	2466	{
2077	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2467	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078		2468
2079	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2469	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080	frame->prepare = prepare_schedule;	2470	frame->prepare = prepare_schedule;
2081		2471
2082	/* to avoid race conditions when a woken-up coro gets terminated */	2472	/* to avoid race conditions when a woken-up coro gets terminated */
2083	/* we arrange for a temporary on_destroy that calls adjust (0) */	2473	/* 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;	2474	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2086	}	2475	}
		2476	}
2087		2477
		2478	static void
		2479	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2480	{
		2481	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2088	frame->check = slf_check_semaphore_down;	2482	frame->check = slf_check_semaphore_down;
		2483	}
2089		2484
		2485	static void
		2486	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2487	{
		2488	if (items >= 2)
		2489	{
		2490	/* callback form */
		2491	AV *av = (AV *)SvRV (arg [0]);
		2492	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
		2493
		2494	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
		2495
		2496	if (SvIVX (AvARRAY (av)[0]) > 0)
		2497	coro_semaphore_adjust (aTHX_ av, 0);
		2498
		2499	frame->prepare = prepare_nop;
		2500	frame->check = slf_check_nop;
		2501	}
		2502	else
		2503	{
		2504	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2505	frame->check = slf_check_semaphore_wait;
		2506	}
		2507	}
		2508
		2509	/* signal */
		2510
		2511	static void
		2512	coro_signal_wake (pTHX_ AV *av, int count)
		2513	{
		2514	SvIVX (AvARRAY (av)[0]) = 0;
		2515
		2516	/* now signal count waiters */
		2517	while (count > 0 && AvFILLp (av) > 0)
		2518	{
		2519	SV *cb;
		2520
		2521	/* swap first two elements so we can shift a waiter */
		2522	cb = AvARRAY (av)[0];
		2523	AvARRAY (av)[0] = AvARRAY (av)[1];
		2524	AvARRAY (av)[1] = cb;
		2525
		2526	cb = av_shift (av);
		2527
		2528	api_ready (aTHX_ cb);
		2529	sv_setiv (cb, 0); /* signal waiter */
		2530	SvREFCNT_dec (cb);
		2531
		2532	--count;
		2533	}
		2534	}
		2535
		2536	static int
		2537	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2538	{
		2539	/* if we are about to throw, also stop waiting */
		2540	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2541	}
		2542
		2543	static void
		2544	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2545	{
		2546	AV *av = (AV *)SvRV (arg [0]);
		2547
		2548	if (SvIVX (AvARRAY (av)[0]))
		2549	{
		2550	SvIVX (AvARRAY (av)[0]) = 0;
		2551	frame->prepare = prepare_nop;
		2552	frame->check = slf_check_nop;
		2553	}
		2554	else
		2555	{
		2556	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2557
		2558	av_push (av, waiter);
		2559
		2560	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2561	frame->prepare = prepare_schedule;
		2562	frame->check = slf_check_signal_wait;
		2563	}
2090	}	2564	}
2091		2565
2092	/*****************************************************************************/	2566	/*****************************************************************************/
		2567	/* Coro::AIO */
2093		2568
2094	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2569	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2095		2570
2096	/* create a closure from XS, returns a code reference */	2571	/* helper storage struct */
2097	/* the arg can be accessed via GENSUB_ARG from the callback */	2572	struct io_state
2098	/* the callback must use dXSARGS/XSRETURN */
2099	static SV *
2100	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101	{	2573	{
2102	CV *cv = (CV *)NEWSV (0, 0);	2574	int errorno;
		2575	I32 laststype; /* U16 in 5.10.0 */
		2576	int laststatval;
		2577	Stat_t statcache;
		2578	};
2103		2579
		2580	static void
		2581	coro_aio_callback (pTHX_ CV *cv)
		2582	{
		2583	dXSARGS;
		2584	AV *state = (AV *)GENSUB_ARG;
		2585	SV *coro = av_pop (state);
		2586	SV *data_sv = newSV (sizeof (struct io_state));
		2587
		2588	av_extend (state, items - 1);
		2589
2104	sv_upgrade ((SV *)cv, SVt_PVCV);	2590	sv_upgrade (data_sv, SVt_PV);
		2591	SvCUR_set (data_sv, sizeof (struct io_state));
		2592	SvPOK_only (data_sv);
2105		2593
2106	CvANON_on (cv);	2594	{
2107	CvISXSUB_on (cv);	2595	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2108	CvXSUB (cv) = xsub;
2109	GENSUB_ARG = arg;
2110		2596
2111	return newRV_noinc ((SV *)cv);	2597	data->errorno = errno;
		2598	data->laststype = PL_laststype;
		2599	data->laststatval = PL_laststatval;
		2600	data->statcache = PL_statcache;
		2601	}
		2602
		2603	/* now build the result vector out of all the parameters and the data_sv */
		2604	{
		2605	int i;
		2606
		2607	for (i = 0; i < items; ++i)
		2608	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2609	}
		2610
		2611	av_push (state, data_sv);
		2612
		2613	api_ready (aTHX_ coro);
		2614	SvREFCNT_dec (coro);
		2615	SvREFCNT_dec ((AV *)state);
		2616	}
		2617
		2618	static int
		2619	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2620	{
		2621	AV *state = (AV *)frame->data;
		2622
		2623	/* if we are about to throw, return early */
		2624	/* this does not cancel the aio request, but at least */
		2625	/* it quickly returns */
		2626	if (CORO_THROW)
		2627	return 0;
		2628
		2629	/* one element that is an RV? repeat! */
		2630	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2631	return 1;
		2632
		2633	/* restore status */
		2634	{
		2635	SV *data_sv = av_pop (state);
		2636	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2637
		2638	errno = data->errorno;
		2639	PL_laststype = data->laststype;
		2640	PL_laststatval = data->laststatval;
		2641	PL_statcache = data->statcache;
		2642
		2643	SvREFCNT_dec (data_sv);
		2644	}
		2645
		2646	/* push result values */
		2647	{
		2648	dSP;
		2649	int i;
		2650
		2651	EXTEND (SP, AvFILLp (state) + 1);
		2652	for (i = 0; i <= AvFILLp (state); ++i)
		2653	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2654
		2655	PUTBACK;
		2656	}
		2657
		2658	return 0;
		2659	}
		2660
		2661	static void
		2662	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2663	{
		2664	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2665	SV *coro_hv = SvRV (coro_current);
		2666	struct coro *coro = SvSTATE_hv (coro_hv);
		2667
		2668	/* put our coroutine id on the state arg */
		2669	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2670
		2671	/* first see whether we have a non-zero priority and set it as AIO prio */
		2672	if (coro->prio)
		2673	{
		2674	dSP;
		2675
		2676	static SV *prio_cv;
		2677	static SV *prio_sv;
		2678
		2679	if (expect_false (!prio_cv))
		2680	{
		2681	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2682	prio_sv = newSViv (0);
		2683	}
		2684
		2685	PUSHMARK (SP);
		2686	sv_setiv (prio_sv, coro->prio);
		2687	XPUSHs (prio_sv);
		2688
		2689	PUTBACK;
		2690	call_sv (prio_cv, G_VOID | G_DISCARD);
		2691	}
		2692
		2693	/* now call the original request */
		2694	{
		2695	dSP;
		2696	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2697	int i;
		2698
		2699	PUSHMARK (SP);
		2700
		2701	/* first push all args to the stack */
		2702	EXTEND (SP, items + 1);
		2703
		2704	for (i = 0; i < items; ++i)
		2705	PUSHs (arg [i]);
		2706
		2707	/* now push the callback closure */
		2708	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2709
		2710	/* now call the AIO function - we assume our request is uncancelable */
		2711	PUTBACK;
		2712	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2713	}
		2714
		2715	/* now that the requets is going, we loop toll we have a result */
		2716	frame->data = (void *)state;
		2717	frame->prepare = prepare_schedule;
		2718	frame->check = slf_check_aio_req;
		2719	}
		2720
		2721	static void
		2722	coro_aio_req_xs (pTHX_ CV *cv)
		2723	{
		2724	dXSARGS;
		2725
		2726	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2727
		2728	XSRETURN_EMPTY;
2112	}	2729	}
2113		2730
2114	/*****************************************************************************/	2731	/*****************************************************************************/
		2732
		2733	#if CORO_CLONE
		2734	# include "clone.c"
		2735	#endif
2115		2736
2116	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2737	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2117		2738
2118	PROTOTYPES: DISABLE	2739	PROTOTYPES: DISABLE
2119		2740
…		…
2124	coro_thx = PERL_GET_CONTEXT;	2745	coro_thx = PERL_GET_CONTEXT;
2125	# endif	2746	# endif
2126	#endif	2747	#endif
2127	BOOT_PAGESIZE;	2748	BOOT_PAGESIZE;
2128		2749
		2750	cctx_current = cctx_new_empty ();
		2751
2129	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	2752	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2130	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	2753	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2131		2754
2132	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2755	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2133	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	2756	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2152		2775
2153	{	2776	{
2154	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	2777	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155		2778
2156	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	2779	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157	hv_store_ent (PL_custom_op_names, slf,	2780	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2158	newSVpv ("coro_slf", 0), 0);
2159		2781
2160	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	2782	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161	hv_store_ent (PL_custom_op_descs, slf,	2783	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2162	newSVpv ("coro schedule like function", 0), 0);
2163	}	2784	}
2164		2785
2165	coroapi.ver = CORO_API_VERSION;	2786	coroapi.ver = CORO_API_VERSION;
2166	coroapi.rev = CORO_API_REVISION;	2787	coroapi.rev = CORO_API_REVISION;
2167		2788
…		…
2186	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2807	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2187	}	2808	}
2188		2809
2189	SV *	2810	SV *
2190	new (char *klass, ...)	2811	new (char *klass, ...)
		2812	ALIAS:
		2813	Coro::new = 1
2191	CODE:	2814	CODE:
2192	{	2815	{
2193	struct coro *coro;	2816	struct coro *coro;
2194	MAGIC *mg;	2817	MAGIC *mg;
2195	HV *hv;	2818	HV *hv;
		2819	CV *cb;
2196	int i;	2820	int i;
		2821
		2822	if (items > 1)
		2823	{
		2824	cb = coro_sv_2cv (aTHX_ ST (1));
		2825
		2826	if (!ix)
		2827	{
		2828	if (CvISXSUB (cb))
		2829	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2830
		2831	if (!CvROOT (cb))
		2832	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2833	}
		2834	}
2197		2835
2198	Newz (0, coro, 1, struct coro);	2836	Newz (0, coro, 1, struct coro);
2199	coro->args = newAV ();	2837	coro->args = newAV ();
2200	coro->flags = CF_NEW;	2838	coro->flags = CF_NEW;
2201		2839
…		…
2206	coro->hv = hv = newHV ();	2844	coro->hv = hv = newHV ();
2207	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2845	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208	mg->mg_flags |= MGf_DUP;	2846	mg->mg_flags |= MGf_DUP;
2209	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2847	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2210		2848
		2849	if (items > 1)
		2850	{
2211	av_extend (coro->args, items - 1);	2851	av_extend (coro->args, items - 1 + ix - 1);
		2852
		2853	if (ix)
		2854	{
		2855	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2856	cb = cv_coro_run;
		2857	}
		2858
		2859	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2860
2212	for (i = 1; i < items; i++)	2861	for (i = 2; i < items; i++)
2213	av_push (coro->args, newSVsv (ST (i)));	2862	av_push (coro->args, newSVsv (ST (i)));
		2863	}
2214	}	2864	}
2215	OUTPUT:	2865	OUTPUT:
2216	RETVAL	2866	RETVAL
2217
2218	void
2219	_set_stacklevel (...)
2220	CODE:
2221	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222		2867
2223	void	2868	void
2224	transfer (...)	2869	transfer (...)
2225	PROTOTYPE: $$	2870	PROTOTYPE: $$
2226	CODE:	2871	CODE:
2227	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2872	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228		2873
2229	bool	2874	bool
2230	_destroy (SV *coro_sv)	2875	_destroy (SV *coro_sv)
2231	CODE:	2876	CODE:
2232	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2877	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2236	void	2881	void
2237	_exit (int code)	2882	_exit (int code)
2238	PROTOTYPE: $	2883	PROTOTYPE: $
2239	CODE:	2884	CODE:
2240	_exit (code);	2885	_exit (code);
		2886
		2887	SV *
		2888	clone (Coro::State coro)
		2889	CODE:
		2890	{
		2891	#if CORO_CLONE
		2892	struct coro *ncoro = coro_clone (coro);
		2893	MAGIC *mg;
		2894	/* TODO: too much duplication */
		2895	ncoro->hv = newHV ();
		2896	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		2897	mg->mg_flags |= MGf_DUP;
		2898	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		2899	#else
		2900	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		2901	#endif
		2902	}
		2903	OUTPUT:
		2904	RETVAL
2241		2905
2242	int	2906	int
2243	cctx_stacksize (int new_stacksize = 0)	2907	cctx_stacksize (int new_stacksize = 0)
2244	PROTOTYPE: ;$	2908	PROTOTYPE: ;$
2245	CODE:	2909	CODE:
…		…
2350		3014
2351	void	3015	void
2352	throw (Coro::State self, SV *throw = &PL_sv_undef)	3016	throw (Coro::State self, SV *throw = &PL_sv_undef)
2353	PROTOTYPE: $;$	3017	PROTOTYPE: $;$
2354	CODE:	3018	CODE:
		3019	{
		3020	struct coro *current = SvSTATE_current;
		3021	SV **throwp = self == current ? &CORO_THROW : &self->except;
2355	SvREFCNT_dec (self->throw);	3022	SvREFCNT_dec (*throwp);
2356	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	3023	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		3024	}
2357		3025
2358	void	3026	void
2359	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3027	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360	PROTOTYPE: $;$	3028	PROTOTYPE: $;$
2361	C_ARGS: aTHX_ coro, flags	3029	C_ARGS: aTHX_ coro, flags
2362		3030
2363	SV *	3031	SV *
2364	has_cctx (Coro::State coro)	3032	has_cctx (Coro::State coro)
2365	PROTOTYPE: $	3033	PROTOTYPE: $
2366	CODE:	3034	CODE:
2367	RETVAL = boolSV (!!coro->cctx);	3035	/* maybe manage the running flag differently */
		3036	RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2368	OUTPUT:	3037	OUTPUT:
2369	RETVAL	3038	RETVAL
2370		3039
2371	int	3040	int
2372	is_traced (Coro::State coro)	3041	is_traced (Coro::State coro)
…		…
2392		3061
2393	void	3062	void
2394	force_cctx ()	3063	force_cctx ()
2395	PROTOTYPE:	3064	PROTOTYPE:
2396	CODE:	3065	CODE:
2397	SvSTATE_current->cctx->idle_sp = 0;	3066	cctx_current->idle_sp = 0;
2398		3067
2399	void	3068	void
2400	swap_defsv (Coro::State self)	3069	swap_defsv (Coro::State self)
2401	PROTOTYPE: $	3070	PROTOTYPE: $
2402	ALIAS:	3071	ALIAS:
…		…
2410	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3079	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411		3080
2412	SV *tmp = *src; *src = *dst; *dst = tmp;	3081	SV *tmp = *src; *src = *dst; *dst = tmp;
2413	}	3082	}
2414		3083
		3084
2415	MODULE = Coro::State PACKAGE = Coro	3085	MODULE = Coro::State PACKAGE = Coro
2416		3086
2417	BOOT:	3087	BOOT:
2418	{	3088	{
2419	int i;	3089	int i;
2420		3090
2421	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3091	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3092	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2424		3093	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		3094	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2425	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	3095	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2426	SvREADONLY_on (coro_current);	3096	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3097	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3098	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3099
		3100	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		3101	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		3102	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
		3103	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2427		3104
2428	coro_stash = gv_stashpv ("Coro", TRUE);	3105	coro_stash = gv_stashpv ("Coro", TRUE);
2429		3106
2430	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3107	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2431	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3108	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2439		3116
2440	{	3117	{
2441	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3118	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2442		3119
2443	coroapi.schedule = api_schedule;	3120	coroapi.schedule = api_schedule;
		3121	coroapi.schedule_to = api_schedule_to;
2444	coroapi.cede = api_cede;	3122	coroapi.cede = api_cede;
2445	coroapi.cede_notself = api_cede_notself;	3123	coroapi.cede_notself = api_cede_notself;
2446	coroapi.ready = api_ready;	3124	coroapi.ready = api_ready;
2447	coroapi.is_ready = api_is_ready;	3125	coroapi.is_ready = api_is_ready;
2448	coroapi.nready = coro_nready;	3126	coroapi.nready = coro_nready;
2449	coroapi.current = coro_current;	3127	coroapi.current = coro_current;
2450		3128
2451	GCoroAPI = &coroapi;	3129	/*GCoroAPI = &coroapi;*/
2452	sv_setiv (sv, (IV)&coroapi);	3130	sv_setiv (sv, (IV)&coroapi);
2453	SvREADONLY_on (sv);	3131	SvREADONLY_on (sv);
2454	}	3132	}
2455	}	3133	}
2456		3134
2457	void	3135	void
		3136	terminate (...)
		3137	CODE:
		3138	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3139
		3140	void
2458	schedule (...)	3141	schedule (...)
2459	CODE:	3142	CODE:
2460	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);	3143	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		3144
		3145	void
		3146	schedule_to (...)
		3147	CODE:
		3148	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3149
		3150	void
		3151	cede_to (...)
		3152	CODE:
		3153	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2461		3154
2462	void	3155	void
2463	cede (...)	3156	cede (...)
2464	CODE:	3157	CODE:
2465	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);	3158	CORO_EXECUTE_SLF_XS (slf_init_cede);
2466		3159
2467	void	3160	void
2468	cede_notself (...)	3161	cede_notself (...)
2469	CODE:	3162	CODE:
2470	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);	3163	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
		3164
		3165	void
		3166	_cancel (Coro::State self)
		3167	CODE:
		3168	coro_state_destroy (aTHX_ self);
		3169	coro_call_on_destroy (aTHX_ self);
2471		3170
2472	void	3171	void
2473	_set_current (SV *current)	3172	_set_current (SV *current)
2474	PROTOTYPE: $	3173	PROTOTYPE: $
2475	CODE:	3174	CODE:
…		…
2520	CODE:	3219	CODE:
2521	RETVAL = coro_nready;	3220	RETVAL = coro_nready;
2522	OUTPUT:	3221	OUTPUT:
2523	RETVAL	3222	RETVAL
2524		3223
2525	# for async_pool speedup
2526	void	3224	void
2527	_pool_1 (SV *cb)	3225	_pool_handler (...)
2528	CODE:	3226	CODE:
2529	{	3227	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		3228
2564	void	3229	void
2565	_pool_2 (SV *cb)	3230	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: $	3231	PROTOTYPE: &@
2602	PPCODE:	3232	PPCODE:
2603	{	3233	{
2604	AV *defav = GvAV (PL_defgv);	3234	HV *hv = (HV *)av_pop (av_async_pool);
2605	AV *av = newAV ();	3235	AV *av = newAV ();
		3236	SV *cb = ST (0);
2606	int i;	3237	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		3238
2612	data->errorno = errno;	3239	av_extend (av, items - 2);
2613	data->laststype = PL_laststype;	3240	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]));	3241	av_push (av, SvREFCNT_inc_NN (ST (i)));
2621		3242
2622	av_push (av, data_sv);	3243	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	{	3244	{
2669	PUSHMARK (SP);	3245	PUSHMARK (SP);
		3246	EXTEND (SP, 2);
		3247	PUSHs (sv_Coro);
		3248	PUSHs ((SV *)cv_pool_handler);
2670	PUTBACK;	3249	PUTBACK;
2671	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3250	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2672	SPAGAIN;	3251	SPAGAIN;
		3252
		3253	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2673	}	3254	}
2674		3255
2675	--incede;	3256	{
		3257	struct coro *coro = SvSTATE_hv (hv);
		3258
		3259	assert (!coro->invoke_cb);
		3260	assert (!coro->invoke_av);
		3261	coro->invoke_cb = SvREFCNT_inc (cb);
		3262	coro->invoke_av = av;
		3263	}
		3264
		3265	api_ready (aTHX_ (SV *)hv);
		3266
		3267	if (GIMME_V != G_VOID)
		3268	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3269	else
		3270	SvREFCNT_dec (hv);
2676	}	3271	}
		3272
		3273	SV *
		3274	rouse_cb ()
		3275	PROTOTYPE:
		3276	CODE:
		3277	RETVAL = coro_new_rouse_cb (aTHX);
		3278	OUTPUT:
		3279	RETVAL
		3280
		3281	void
		3282	rouse_wait (...)
		3283	PROTOTYPE: ;$
		3284	PPCODE:
		3285	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2677		3286
2678		3287
2679	MODULE = Coro::State PACKAGE = PerlIO::cede	3288	MODULE = Coro::State PACKAGE = PerlIO::cede
2680		3289
2681	BOOT:	3290	BOOT:
2682	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3291	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683		3292
		3293
2684	MODULE = Coro::State PACKAGE = Coro::Semaphore	3294	MODULE = Coro::State PACKAGE = Coro::Semaphore
2685		3295
2686	SV *	3296	SV *
2687	new (SV *klass, SV *count_ = 0)	3297	new (SV *klass, SV *count = 0)
2688	CODE:	3298	CODE:
2689	{	3299	RETVAL = sv_bless (
2690	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3300	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2691	AV *av = newAV ();	3301	GvSTASH (CvGV (cv))
2692	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	3302	);
2693	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	3303	OUTPUT:
2694	}	3304	RETVAL
		3305
		3306	# helper for Coro::Channel
		3307	SV *
		3308	_alloc (int count)
		3309	CODE:
		3310	RETVAL = coro_waitarray_new (aTHX_ count);
2695	OUTPUT:	3311	OUTPUT:
2696	RETVAL	3312	RETVAL
2697		3313
2698	SV *	3314	SV *
2699	count (SV *self)	3315	count (SV *self)
…		…
2708	adjust = 1	3324	adjust = 1
2709	CODE:	3325	CODE:
2710	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3326	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711		3327
2712	void	3328	void
2713	down (SV *self)	3329	down (...)
2714	CODE:	3330	CODE:
2715	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);	3331	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3332
		3333	void
		3334	wait (...)
		3335	CODE:
		3336	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2716		3337
2717	void	3338	void
2718	try (SV *self)	3339	try (SV *self)
2719	PPCODE:	3340	PPCODE:
2720	{	3341	{
…		…
2732	XSRETURN_NO;	3353	XSRETURN_NO;
2733	}	3354	}
2734		3355
2735	void	3356	void
2736	waiters (SV *self)	3357	waiters (SV *self)
2737	CODE:	3358	PPCODE:
2738	{	3359	{
2739	AV *av = (AV *)SvRV (self);	3360	AV *av = (AV *)SvRV (self);
		3361	int wcount = AvFILLp (av) + 1 - 1;
2740		3362
2741	if (GIMME_V == G_SCALAR)	3363	if (GIMME_V == G_SCALAR)
2742	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3364	XPUSHs (sv_2mortal (newSViv (wcount)));
2743	else	3365	else
2744	{	3366	{
2745	int i;	3367	int i;
2746	EXTEND (SP, AvFILLp (av) + 1 - 1);	3368	EXTEND (SP, wcount);
2747	for (i = 1; i <= AvFILLp (av); ++i)	3369	for (i = 1; i <= wcount; ++i)
2748	PUSHs (newSVsv (AvARRAY (av)[i]));	3370	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749	}	3371	}
2750	}	3372	}
2751		3373
		3374	MODULE = Coro::State PACKAGE = Coro::Signal
		3375
		3376	SV *
		3377	new (SV *klass)
		3378	CODE:
		3379	RETVAL = sv_bless (
		3380	coro_waitarray_new (aTHX_ 0),
		3381	GvSTASH (CvGV (cv))
		3382	);
		3383	OUTPUT:
		3384	RETVAL
		3385
		3386	void
		3387	wait (...)
		3388	CODE:
		3389	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3390
		3391	void
		3392	broadcast (SV *self)
		3393	CODE:
		3394	{
		3395	AV *av = (AV *)SvRV (self);
		3396	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3397	}
		3398
		3399	void
		3400	send (SV *self)
		3401	CODE:
		3402	{
		3403	AV *av = (AV *)SvRV (self);
		3404
		3405	if (AvFILLp (av))
		3406	coro_signal_wake (aTHX_ av, 1);
		3407	else
		3408	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3409	}
		3410
		3411	IV
		3412	awaited (SV *self)
		3413	CODE:
		3414	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3415	OUTPUT:
		3416	RETVAL
		3417
		3418
		3419	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		3420
		3421	BOOT:
		3422	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		3423
		3424	void
		3425	_schedule (...)
		3426	CODE:
		3427	{
		3428	static int incede;
		3429
		3430	api_cede_notself (aTHX);
		3431
		3432	++incede;
		3433	while (coro_nready >= incede && api_cede (aTHX))
		3434	;
		3435
		3436	sv_setsv (sv_activity, &PL_sv_undef);
		3437	if (coro_nready >= incede)
		3438	{
		3439	PUSHMARK (SP);
		3440	PUTBACK;
		3441	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		3442	}
		3443
		3444	--incede;
		3445	}
		3446
		3447
		3448	MODULE = Coro::State PACKAGE = Coro::AIO
		3449
		3450	void
		3451	_register (char *target, char *proto, SV *req)
		3452	CODE:
		3453	{
		3454	CV *req_cv = coro_sv_2cv (aTHX_ req);
		3455	/* newXSproto doesn't return the CV on 5.8 */
		3456	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3457	sv_setpv ((SV *)slf_cv, proto);
		3458	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3459	}
		3460

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