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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.281 by root, Sun Nov 16 10:12:38 2008 UTC vs.
Revision 1.314 by root, Thu Nov 20 03:24:39 2008 UTC

…		…
16		16
17	#ifdef WIN32	17	#ifdef WIN32
18	# undef setjmp	18	# undef setjmp
19	# undef longjmp	19	# undef longjmp
20	# undef _exit	20	# undef _exit
21	# define setjmp _setjmp // deep magic, don't ask	21	# define setjmp _setjmp /* deep magic */
22	#else	22	#else
23	# include <inttypes.h> /* most portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
24	#endif	24	#endif
25		25
26	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
…		…
55		55
56	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))	60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61		61
62	#if !PERL_VERSION_ATLEAST (5,6,0)	62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr	63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr	64	# define PL_ppaddr ppaddr
65	# endif	65	# endif
…		…
95	# define GV_NOTQUAL 0	95	# define GV_NOTQUAL 0
96	#endif	96	#endif
97	#ifndef newSV	97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)	98	# define newSV(l) NEWSV(0,l)
99	#endif	99	#endif
		100	#ifndef CvISXSUB_on
		101	# define CvISXSUB_on(cv) (void)cv
		102	#endif
		103	#ifndef CvISXSUB
		104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
		105	#endif
100		106
101	/* 5.8.7 */	107	/* 5.8.7 */
102	#ifndef SvRV_set	108	#ifndef SvRV_set
103	# define SvRV_set(s,v) SvRV(s) = (v)	109	# define SvRV_set(s,v) SvRV(s) = (v)
104	#endif	110	#endif
…		…
117	#endif	123	#endif
118		124
119	/* The next macros try to return the current stack pointer, in an as	125	/* The next macros try to return the current stack pointer, in an as
120	* portable way as possible. */	126	* portable way as possible. */
121	#if __GNUC__ >= 4	127	#if __GNUC__ >= 4
		128	# define dSTACKLEVEL int stacklevel_dummy
122	# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)	129	# define STACKLEVEL __builtin_frame_address (0)
123	#else	130	#else
124	# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel	131	# define dSTACKLEVEL volatile void *stacklevel
		132	# define STACKLEVEL ((void *)&stacklevel)
125	#endif	133	#endif
126		134
127	#define IN_DESTRUCT (PL_main_cv == Nullcv)	135	#define IN_DESTRUCT (PL_main_cv == Nullcv)
128		136
129	#if __GNUC__ >= 3	137	#if __GNUC__ >= 3
…		…
140	#define expect_true(expr) expect ((expr) != 0, 1)	148	#define expect_true(expr) expect ((expr) != 0, 1)
141		149
142	#define NOINLINE attribute ((noinline))	150	#define NOINLINE attribute ((noinline))
143		151
144	#include "CoroAPI.h"	152	#include "CoroAPI.h"
		153	#define GCoroAPI (&coroapi) /* very sneaky */
145		154
146	#ifdef USE_ITHREADS	155	#ifdef USE_ITHREADS
147	# if CORO_PTHREAD	156	# if CORO_PTHREAD
148	static void *coro_thx;	157	static void *coro_thx;
149	# endif	158	# endif
150	#endif	159	#endif
151		160
152	/* helper storage struct for Coro::AIO */
153	struct io_state
154	{
155	AV *res;
156	int errorno;
157	I32 laststype; /* U16 in 5.10.0 */
158	int laststatval;
159	Stat_t statcache;
160	};
161
162	static double (*nvtime)(); /* so why doesn't it take void? */	161	static double (*nvtime)(); /* so why doesn't it take void? */
		162
		163	/* we hijack an hopefully unused CV flag for our purposes */
		164	#define CVf_SLF 0x4000
		165	static OP *pp_slf (pTHX);
163		166
164	static U32 cctx_gen;	167	static U32 cctx_gen;
165	static size_t cctx_stacksize = CORO_STACKSIZE;	168	static size_t cctx_stacksize = CORO_STACKSIZE;
166	static struct CoroAPI coroapi;	169	static struct CoroAPI coroapi;
167	static AV *main_mainstack; /* used to differentiate between $main and others */	170	static AV *main_mainstack; /* used to differentiate between $main and others */
168	static JMPENV *main_top_env;	171	static JMPENV *main_top_env;
169	static HV *coro_state_stash, *coro_stash;	172	static HV *coro_state_stash, *coro_stash;
170	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	173	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171	static volatile struct coro *transfer_next;
172		174
173	static GV *irsgv; /* $/ */	175	static GV *irsgv; /* $/ */
174	static GV *stdoutgv; /* *STDOUT */	176	static GV *stdoutgv; /* *STDOUT */
175	static SV *rv_diehook;	177	static SV *rv_diehook;
176	static SV *rv_warnhook;	178	static SV *rv_warnhook;
177	static HV *hv_sig; /* %SIG */	179	static HV *hv_sig; /* %SIG */
178		180
179	/* async_pool helper stuff */	181	/* async_pool helper stuff */
180	static SV *sv_pool_rss;	182	static SV *sv_pool_rss;
181	static SV *sv_pool_size;	183	static SV *sv_pool_size;
		184	static SV *sv_async_pool_idle;
182	static AV *av_async_pool;	185	static AV *av_async_pool;
		186	static SV *sv_Coro;
		187	static CV *cv_pool_handler;
		188	static CV *cv_coro_new;
183		189
184	/* Coro::AnyEvent */	190	/* Coro::AnyEvent */
185	static SV *sv_activity;	191	static SV *sv_activity;
186		192
187	static struct coro_cctx *cctx_first;	193	static struct coro_cctx *cctx_first;
…		…
242	/* this is a structure representing a perl-level coroutine */	248	/* this is a structure representing a perl-level coroutine */
243	struct coro {	249	struct coro {
244	/* the C coroutine allocated to this perl coroutine, if any */	250	/* the C coroutine allocated to this perl coroutine, if any */
245	coro_cctx *cctx;	251	coro_cctx *cctx;
246		252
247	/* process data */	253	/* state data */
248	struct CoroSLF slf_frame; /* saved slf frame */	254	struct CoroSLF slf_frame; /* saved slf frame */
249	AV *mainstack;	255	AV *mainstack;
250	perl_slots *slot; /* basically the saved sp */	256	perl_slots *slot; /* basically the saved sp */
251		257
		258	CV *startcv; /* the CV to execute */
252	AV *args; /* data associated with this coroutine (initial args) */	259	AV *args; /* data associated with this coroutine (initial args) */
253	int refcnt; /* coroutines are refcounted, yes */	260	int refcnt; /* coroutines are refcounted, yes */
254	int flags; /* CF_ flags */	261	int flags; /* CF_ flags */
255	HV *hv; /* the perl hash associated with this coro, if any */	262	HV *hv; /* the perl hash associated with this coro, if any */
256	void (*on_destroy)(pTHX_ struct coro *coro);	263	void (*on_destroy)(pTHX_ struct coro *coro);
257		264
258	/* statistics */	265	/* statistics */
259	int usecount; /* number of transfers to this coro */	266	int usecount; /* number of transfers to this coro */
260		267
261	/* coro process data */	268	/* coro process data */
262	int prio;	269	int prio;
263	SV *throw; /* exception to be thrown */	270	SV *except; /* exception to be thrown */
		271	SV *rouse_cb;
264		272
265	/* async_pool */	273	/* async_pool */
266	SV *saved_deffh;	274	SV *saved_deffh;
		275	SV *invoke_cb;
		276	AV *invoke_av;
267		277
268	/* linked list */	278	/* linked list */
269	struct coro *next, *prev;	279	struct coro *next, *prev;
270	};	280	};
271		281
272	typedef struct coro *Coro__State;	282	typedef struct coro *Coro__State;
273	typedef struct coro *Coro__State_or_hashref;	283	typedef struct coro *Coro__State_or_hashref;
274		284
		285	/* the following variables are effectively part of the perl context */
		286	/* and get copied between struct coro and these variables */
		287	/* the mainr easonw e don't support windows process emulation */
275	static struct CoroSLF slf_frame; /* the current slf frame */	288	static struct CoroSLF slf_frame; /* the current slf frame */
276		289
277	/** Coro ********************************************************************/	290	/** Coro ********************************************************************/
278		291
279	#define PRIO_MAX 3	292	#define PRIO_MAX 3
…		…
285		298
286	/* for Coro.pm */	299	/* for Coro.pm */
287	static SV *coro_current;	300	static SV *coro_current;
288	static SV *coro_readyhook;	301	static SV *coro_readyhook;
289	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
		303	static CV *cv_coro_run, *cv_coro_terminate;
290	static struct coro *coro_first;	304	static struct coro *coro_first;
291	#define coro_nready coroapi.nready	305	#define coro_nready coroapi.nready
292		306
293	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
294		308
…		…
318	#if PERL_VERSION_ATLEAST (5,10,0)	332	#if PERL_VERSION_ATLEAST (5,10,0)
319	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
320	get_hv (name, create);	334	get_hv (name, create);
321	#endif	335	#endif
322	return get_hv (name, create);	336	return get_hv (name, create);
		337	}
		338
		339	/* may croak */
		340	INLINE CV *
		341	coro_sv_2cv (pTHX_ SV *sv)
		342	{
		343	HV *st;
		344	GV *gvp;
		345	return sv_2cv (sv, &st, &gvp, 0);
323	}	346	}
324		347
325	static AV *	348	static AV *
326	coro_clone_padlist (pTHX_ CV *cv)	349	coro_clone_padlist (pTHX_ CV *cv)
327	{	350	{
…		…
381	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	404	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382		405
383	return 0;	406	return 0;
384	}	407	}
385		408
386	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	409	#define CORO_MAGIC_type_cv 26
387	#define CORO_MAGIC_type_state PERL_MAGIC_ext	410	#define CORO_MAGIC_type_state PERL_MAGIC_ext
388		411
389	static MGVTBL coro_cv_vtbl = {	412	static MGVTBL coro_cv_vtbl = {
390	0, 0, 0, 0,	413	0, 0, 0, 0,
391	coro_cv_free	414	coro_cv_free
392	};	415	};
393		416
		417	#define CORO_MAGIC_NN(sv, type) \
		418	(expect_true (SvMAGIC (sv)->mg_type == type) \
		419	? SvMAGIC (sv) \
		420	: mg_find (sv, type))
		421
394	#define CORO_MAGIC(sv, type) \	422	#define CORO_MAGIC(sv, type) \
395	expect_true (SvMAGIC (sv)) \	423	(expect_true (SvMAGIC (sv)) \
396	? expect_true (SvMAGIC (sv)->mg_type == type) \	424	? CORO_MAGIC_NN (sv, type) \
397	? SvMAGIC (sv) \
398	: mg_find (sv, type) \
399	: 0	425	: 0)
400		426
401	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	427	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	428	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
403		429
404	INLINE struct coro *	430	INLINE struct coro *
405	SvSTATE_ (pTHX_ SV *coro)	431	SvSTATE_ (pTHX_ SV *coro)
406	{	432	{
407	HV *stash;	433	HV *stash;
…		…
425	return (struct coro *)mg->mg_ptr;	451	return (struct coro *)mg->mg_ptr;
426	}	452	}
427		453
428	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	454	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429		455
430	/* fastert than SvSTATE, but expects a coroutine hv */	456	/* faster than SvSTATE, but expects a coroutine hv */
431	INLINE struct coro *	457	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
432	SvSTATE_hv (SV *sv)
433	{
434	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435	? SvMAGIC (sv)
436	: mg_find (sv, CORO_MAGIC_type_state);
437
438	return (struct coro *)mg->mg_ptr;
439	}
440
441	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))	458	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442		459
443	/* the next two functions merely cache the padlists */	460	/* the next two functions merely cache the padlists */
444	static void	461	static void
445	get_padlist (pTHX_ CV *cv)	462	get_padlist (pTHX_ CV *cv)
…		…
452	else	469	else
453	{	470	{
454	#if CORO_PREFER_PERL_FUNCTIONS	471	#if CORO_PREFER_PERL_FUNCTIONS
455	/* this is probably cleaner? but also slower! */	472	/* this is probably cleaner? but also slower! */
456	/* in practise, it seems to be less stable */	473	/* in practise, it seems to be less stable */
457	CV *cp = Perl_cv_clone (cv);	474	CV *cp = Perl_cv_clone (aTHX_ cv);
458	CvPADLIST (cv) = CvPADLIST (cp);	475	CvPADLIST (cv) = CvPADLIST (cp);
459	CvPADLIST (cp) = 0;	476	CvPADLIST (cp) = 0;
460	SvREFCNT_dec (cp);	477	SvREFCNT_dec (cp);
461	#else	478	#else
462	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	479	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
…		…
514	}	531	}
515		532
516	PUTBACK;	533	PUTBACK;
517	}	534	}
518		535
519	slf_frame = c->slf_frame;	536	slf_frame = c->slf_frame;
		537	CORO_THROW = c->except;
520	}	538	}
521		539
522	static void	540	static void
523	save_perl (pTHX_ Coro__State c)	541	save_perl (pTHX_ Coro__State c)
524	{	542	{
		543	c->except = CORO_THROW;
525	c->slf_frame = slf_frame;	544	c->slf_frame = slf_frame;
526		545
527	{	546	{
528	dSP;	547	dSP;
529	I32 cxix = cxstack_ix;	548	I32 cxix = cxstack_ix;
…		…
604	* of perl.c:init_stacks, except that it uses less memory	623	* of perl.c:init_stacks, except that it uses less memory
605	* on the (sometimes correct) assumption that coroutines do	624	* on the (sometimes correct) assumption that coroutines do
606	* not usually need a lot of stackspace.	625	* not usually need a lot of stackspace.
607	*/	626	*/
608	#if CORO_PREFER_PERL_FUNCTIONS	627	#if CORO_PREFER_PERL_FUNCTIONS
609	# define coro_init_stacks init_stacks	628	# define coro_init_stacks(thx) init_stacks ()
610	#else	629	#else
611	static void	630	static void
612	coro_init_stacks (pTHX)	631	coro_init_stacks (pTHX)
613	{	632	{
614	PL_curstackinfo = new_stackinfo(32, 8);	633	PL_curstackinfo = new_stackinfo(32, 8);
…		…
677	#if !PERL_VERSION_ATLEAST (5,10,0)	696	#if !PERL_VERSION_ATLEAST (5,10,0)
678	Safefree (PL_retstack);	697	Safefree (PL_retstack);
679	#endif	698	#endif
680	}	699	}
681		700
		701	#define CORO_RSS \
		702	rss += sizeof (SYM (curstackinfo)); \
		703	rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
		704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
		705	rss += SYM (tmps_max) * sizeof (SV *); \
		706	rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
		707	rss += SYM (scopestack_max) * sizeof (I32); \
		708	rss += SYM (savestack_max) * sizeof (ANY);
		709
682	static size_t	710	static size_t
683	coro_rss (pTHX_ struct coro *coro)	711	coro_rss (pTHX_ struct coro *coro)
684	{	712	{
685	size_t rss = sizeof (*coro);	713	size_t rss = sizeof (*coro);
686		714
687	if (coro->mainstack)	715	if (coro->mainstack)
688	{	716	{
689	perl_slots tmp_slot;
690	perl_slots *slot;
691
692	if (coro->flags & CF_RUNNING)	717	if (coro->flags & CF_RUNNING)
693	{	718	{
694	slot = &tmp_slot;	719	#define SYM(sym) PL_ ## sym
695		720	CORO_RSS;
696	#define VAR(name,type) slot->name = PL_ ## name;
697	# include "state.h"
698	#undef VAR	721	#undef SYM
699	}	722	}
700	else	723	else
701	slot = coro->slot;
702
703	if (slot)
704	{	724	{
705	rss += sizeof (slot->curstackinfo);	725	#define SYM(sym) coro->slot->sym
706	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	726	CORO_RSS;
707	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	727	#undef SYM
708	rss += slot->tmps_max * sizeof (SV *);
709	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710	rss += slot->scopestack_max * sizeof (I32);
711	rss += slot->savestack_max * sizeof (ANY);
712
713	#if !PERL_VERSION_ATLEAST (5,10,0)
714	rss += slot->retstack_max * sizeof (OP *);
715	#endif
716	}	728	}
717	}	729	}
718		730
719	return rss;	731	return rss;
720	}	732	}
…		…
822	slf_check_nop (pTHX_ struct CoroSLF *frame)	834	slf_check_nop (pTHX_ struct CoroSLF *frame)
823	{	835	{
824	return 0;	836	return 0;
825	}	837	}
826		838
827	static void	839	static UNOP coro_setup_op;
		840
		841	static void NOINLINE /* noinline to keep it out of the transfer fast path */
828	coro_setup (pTHX_ struct coro *coro)	842	coro_setup (pTHX_ struct coro *coro)
829	{	843	{
830	/*	844	/*
831	* emulate part of the perl startup here.	845	* emulate part of the perl startup here.
832	*/	846	*/
…		…
859	{	873	{
860	dSP;	874	dSP;
861	UNOP myop;	875	UNOP myop;
862		876
863	Zero (&myop, 1, UNOP);	877	Zero (&myop, 1, UNOP);
864	myop.op_next = Nullop;	878	myop.op_next = Nullop;
		879	myop.op_type = OP_ENTERSUB;
865	myop.op_flags = OPf_WANT_VOID;	880	myop.op_flags = OPf_WANT_VOID;
866		881
867	PUSHMARK (SP);	882	PUSHMARK (SP);
868	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	883	PUSHs ((SV *)coro->startcv);
869	PUTBACK;	884	PUTBACK;
870	PL_op = (OP *)&myop;	885	PL_op = (OP *)&myop;
871	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	886	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872	SPAGAIN;
873	}	887	}
874		888
875	/* this newly created coroutine might be run on an existing cctx which most	889	/* this newly created coroutine might be run on an existing cctx which most
876	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	890	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877	*/	891	*/
878	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	892	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	893	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		894
		895	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
		896	coro_setup_op.op_next = PL_op;
		897	coro_setup_op.op_type = OP_CUSTOM;
		898	coro_setup_op.op_ppaddr = pp_slf;
		899	/* no flags etc. required, as an init function won't be called */
		900
		901	PL_op = (OP *)&coro_setup_op;
		902
		903	/* copy throw, in case it was set before coro_setup */
		904	CORO_THROW = coro->except;
880	}	905	}
881		906
882	static void	907	static void
883	coro_destruct (pTHX_ struct coro *coro)	908	coro_destruct (pTHX_ struct coro *coro)
884	{	909	{
…		…
908		933
909	SvREFCNT_dec (PL_diehook);	934	SvREFCNT_dec (PL_diehook);
910	SvREFCNT_dec (PL_warnhook);	935	SvREFCNT_dec (PL_warnhook);
911		936
912	SvREFCNT_dec (coro->saved_deffh);	937	SvREFCNT_dec (coro->saved_deffh);
913	SvREFCNT_dec (coro->throw);	938	SvREFCNT_dec (coro->rouse_cb);
		939	SvREFCNT_dec (coro->invoke_cb);
		940	SvREFCNT_dec (coro->invoke_av);
914		941
915	coro_destruct_stacks (aTHX);	942	coro_destruct_stacks (aTHX);
916	}	943	}
917		944
918	INLINE void	945	INLINE void
…		…
1005	SAVETMPS;	1032	SAVETMPS;
1006	EXTEND (SP, 3);	1033	EXTEND (SP, 3);
1007	PUSHMARK (SP);	1034	PUSHMARK (SP);
1008	PUSHs (&PL_sv_yes);	1035	PUSHs (&PL_sv_yes);
1009	PUSHs (fullname);	1036	PUSHs (fullname);
1010	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1037	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011	PUTBACK;	1038	PUTBACK;
1012	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1039	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1040	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014	SPAGAIN;	1041	SPAGAIN;
1015	FREETMPS;	1042	FREETMPS;
…		…
1047		1074
1048	TAINT_NOT;	1075	TAINT_NOT;
1049	return 0;	1076	return 0;
1050	}	1077	}
1051		1078
		1079	static struct coro_cctx *cctx_ssl_cctx;
		1080	static struct CoroSLF cctx_ssl_frame;
		1081
1052	static void	1082	static void
1053	prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)	1083	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054	{	1084	{
1055	ta->prev = (struct coro *)cctx;	1085	ta->prev = (struct coro *)cctx_ssl_cctx;
1056	ta->next = 0;	1086	ta->next = 0;
1057	}	1087	}
1058		1088
1059	/* inject a fake call to Coro::State::_cctx_init into the execution */	1089	static int
1060	/* _cctx_init should be careful, as it could be called at almost any time */	1090	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061	/* during execution of a perl program */	1091	{
1062	/* also initialises PL_top_env */	1092	*frame = cctx_ssl_frame;
		1093
		1094	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
		1095	}
		1096
		1097	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063	static void NOINLINE	1098	static void NOINLINE
1064	cctx_prepare (pTHX_ coro_cctx *cctx)	1099	cctx_prepare (pTHX_ coro_cctx *cctx)
1065	{	1100	{
1066	dSP;
1067	UNOP myop;
1068
1069	PL_top_env = &PL_start_env;	1101	PL_top_env = &PL_start_env;
1070		1102
1071	if (cctx->flags & CC_TRACE)	1103	if (cctx->flags & CC_TRACE)
1072	PL_runops = runops_trace;	1104	PL_runops = runops_trace;
1073		1105
1074	Zero (&myop, 1, UNOP);	1106	/* we already must be executing an SLF op, there is no other valid way
1075	myop.op_next = PL_op;	1107	* that can lead to creation of a new cctx */
1076	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1108	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
		1109	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077		1110
1078	PUSHMARK (SP);	1111	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079	EXTEND (SP, 2);	1112	cctx_ssl_cctx = cctx;
1080	PUSHs (sv_2mortal (newSViv ((IV)cctx)));	1113	cctx_ssl_frame = slf_frame;
1081	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1114
1082	PUTBACK;	1115	slf_frame.prepare = slf_prepare_set_stacklevel;
1083	PL_op = (OP *)&myop;	1116	slf_frame.check = slf_check_set_stacklevel;
1084	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085	SPAGAIN;
1086	}	1117	}
1087		1118
1088	/* the tail of transfer: execute stuff we can only do after a transfer */	1119	/* the tail of transfer: execute stuff we can only do after a transfer */
1089	INLINE void	1120	INLINE void
1090	transfer_tail (pTHX)	1121	transfer_tail (pTHX)
1091	{	1122	{
1092	struct coro *next = (struct coro *)transfer_next;
1093	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096	free_coro_mortal (aTHX);	1123	free_coro_mortal (aTHX);
1097
1098	if (expect_false (next->throw))
1099	{
1100	SV *exception = sv_2mortal (next->throw);
1101
1102	next->throw = 0;
1103	sv_setsv (ERRSV, exception);
1104	croak (0);
1105	}
1106	}	1124	}
1107		1125
1108	/*	1126	/*
1109	* this is a _very_ stripped down perl interpreter ;)	1127	* this is a _very_ stripped down perl interpreter ;)
1110	*/	1128	*/
…		…
1125		1143
1126	/* inject a fake subroutine call to cctx_init */	1144	/* inject a fake subroutine call to cctx_init */
1127	cctx_prepare (aTHX_ (coro_cctx *)arg);	1145	cctx_prepare (aTHX_ (coro_cctx *)arg);
1128		1146
1129	/* cctx_run is the alternative tail of transfer() */	1147	/* cctx_run is the alternative tail of transfer() */
1130	/* TODO: throwing an exception here might be deadly, VERIFY */
1131	transfer_tail (aTHX);	1148	transfer_tail (aTHX);
1132		1149
1133	/* somebody or something will hit me for both perl_run and PL_restartop */	1150	/* somebody or something will hit me for both perl_run and PL_restartop */
1134	PL_restartop = PL_op;	1151	PL_restartop = PL_op;
1135	perl_run (PL_curinterp);	1152	perl_run (PL_curinterp);
		1153	/*
		1154	* Unfortunately, there is no way to get at the return values of the
		1155	* coro body here, as perl_run destroys these
		1156	*/
1136		1157
1137	/*	1158	/*
1138	* If perl-run returns we assume exit() was being called or the coro	1159	* If perl-run returns we assume exit() was being called or the coro
1139	* fell off the end, which seems to be the only valid (non-bug)	1160	* fell off the end, which seems to be the only valid (non-bug)
1140	* reason for perl_run to return. We try to exit by jumping to the	1161	* reason for perl_run to return. We try to exit by jumping to the
…		…
1291	/** coroutine switching *****************************************************/	1312	/** coroutine switching *****************************************************/
1292		1313
1293	static void	1314	static void
1294	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1315	transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295	{	1316	{
		1317	/* TODO: throwing up here is considered harmful */
		1318
1296	if (expect_true (prev != next))	1319	if (expect_true (prev != next))
1297	{	1320	{
1298	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1321	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1322	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1300		1323
…		…
1310	#endif	1333	#endif
1311	}	1334	}
1312	}	1335	}
1313		1336
1314	/* always use the TRANSFER macro */	1337	/* always use the TRANSFER macro */
1315	static void NOINLINE	1338	static void NOINLINE /* noinline so we have a fixed stackframe */
1316	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1339	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317	{	1340	{
1318	dSTACKLEVEL;	1341	dSTACKLEVEL;
1319		1342
1320	/* sometimes transfer is only called to set idle_sp */	1343	/* sometimes transfer is only called to set idle_sp */
1321	if (expect_false (!next))	1344	if (expect_false (!next))
1322	{	1345	{
1323	((coro_cctx *)prev)->idle_sp = (void *)stacklevel;	1346	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1324	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1347	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325	}	1348	}
1326	else if (expect_true (prev != next))	1349	else if (expect_true (prev != next))
1327	{	1350	{
1328	coro_cctx *prev__cctx;	1351	coro_cctx *prev__cctx;
…		…
1353		1376
1354	prev__cctx = prev->cctx;	1377	prev__cctx = prev->cctx;
1355		1378
1356	/* possibly untie and reuse the cctx */	1379	/* possibly untie and reuse the cctx */
1357	if (expect_true (	1380	if (expect_true (
1358	prev__cctx->idle_sp == (void *)stacklevel	1381	prev__cctx->idle_sp == STACKLEVEL
1359	&& !(prev__cctx->flags & CC_TRACE)	1382	&& !(prev__cctx->flags & CC_TRACE)
1360	&& !force_cctx	1383	&& !force_cctx
1361	))	1384	))
1362	{	1385	{
1363	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1386	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1377	++next->usecount;	1400	++next->usecount;
1378		1401
1379	if (expect_true (!next->cctx))	1402	if (expect_true (!next->cctx))
1380	next->cctx = cctx_get (aTHX);	1403	next->cctx = cctx_get (aTHX);
1381		1404
1382	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383	transfer_next = next;
1384
1385	if (expect_false (prev__cctx != next->cctx))	1405	if (expect_false (prev__cctx != next->cctx))
1386	{	1406	{
1387	prev__cctx->top_env = PL_top_env;	1407	prev__cctx->top_env = PL_top_env;
1388	PL_top_env = next->cctx->top_env;	1408	PL_top_env = next->cctx->top_env;
1389	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1409	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1433		1453
1434	coro->slot = 0;	1454	coro->slot = 0;
1435	}	1455	}
1436		1456
1437	cctx_destroy (coro->cctx);	1457	cctx_destroy (coro->cctx);
		1458	SvREFCNT_dec (coro->startcv);
1438	SvREFCNT_dec (coro->args);	1459	SvREFCNT_dec (coro->args);
		1460	SvREFCNT_dec (CORO_THROW);
1439		1461
1440	if (coro->next) coro->next->prev = coro->prev;	1462	if (coro->next) coro->next->prev = coro->prev;
1441	if (coro->prev) coro->prev->next = coro->next;	1463	if (coro->prev) coro->prev->next = coro->next;
1442	if (coro == coro_first) coro_first = coro->next;	1464	if (coro == coro_first) coro_first = coro->next;
1443		1465
…		…
1497		1519
1498	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1520	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1499	TRANSFER (ta, 1);	1521	TRANSFER (ta, 1);
1500	}	1522	}
1501		1523
		1524	/*****************************************************************************/
		1525	/* gensub: simple closure generation utility */
		1526
		1527	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		1528
		1529	/* create a closure from XS, returns a code reference */
		1530	/* the arg can be accessed via GENSUB_ARG from the callback */
		1531	/* the callback must use dXSARGS/XSRETURN */
		1532	static SV *
		1533	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
		1534	{
		1535	CV *cv = (CV *)newSV (0);
		1536
		1537	sv_upgrade ((SV *)cv, SVt_PVCV);
		1538
		1539	CvANON_on (cv);
		1540	CvISXSUB_on (cv);
		1541	CvXSUB (cv) = xsub;
		1542	GENSUB_ARG = arg;
		1543
		1544	return newRV_noinc ((SV *)cv);
		1545	}
		1546
1502	/** Coro ********************************************************************/	1547	/** Coro ********************************************************************/
1503		1548
1504	INLINE void	1549	INLINE void
1505	coro_enq (pTHX_ struct coro *coro)	1550	coro_enq (pTHX_ struct coro *coro)
1506	{	1551	{
…		…
1549	ENTER;	1594	ENTER;
1550	SAVETMPS;	1595	SAVETMPS;
1551		1596
1552	PUSHMARK (SP);	1597	PUSHMARK (SP);
1553	PUTBACK;	1598	PUTBACK;
1554	call_sv (sv_hook, G_DISCARD);	1599	call_sv (sv_hook, G_VOID | G_DISCARD);
1555	SPAGAIN;
1556		1600
1557	FREETMPS;	1601	FREETMPS;
1558	LEAVE;	1602	LEAVE;
1559	}	1603	}
1560		1604
…		…
1587	ENTER;	1631	ENTER;
1588	SAVETMPS;	1632	SAVETMPS;
1589		1633
1590	PUSHMARK (SP);	1634	PUSHMARK (SP);
1591	PUTBACK;	1635	PUTBACK;
1592	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1636	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1593	SPAGAIN;
1594		1637
1595	FREETMPS;	1638	FREETMPS;
1596	LEAVE;	1639	LEAVE;
1597	continue;	1640	continue;
1598	}	1641	}
…		…
1705	if (coro->flags & CF_RUNNING)	1748	if (coro->flags & CF_RUNNING)
1706	PL_runops = RUNOPS_DEFAULT;	1749	PL_runops = RUNOPS_DEFAULT;
1707	else	1750	else
1708	coro->slot->runops = RUNOPS_DEFAULT;	1751	coro->slot->runops = RUNOPS_DEFAULT;
1709	}	1752	}
		1753	}
		1754
		1755	/*****************************************************************************/
		1756	/* async pool handler */
		1757
		1758	static int
		1759	slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
		1760	{
		1761	HV *hv = (HV *)SvRV (coro_current);
		1762	struct coro *coro = (struct coro *)frame->data;
		1763
		1764	if (!coro->invoke_cb)
		1765	return 1; /* loop till we have invoke */
		1766	else
		1767	{
		1768	hv_store (hv, "desc", sizeof ("desc") - 1,
		1769	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1770
		1771	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
		1772
		1773	{
		1774	dSP;
		1775	XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
		1776	PUTBACK;
		1777	}
		1778
		1779	SvREFCNT_dec (GvAV (PL_defgv));
		1780	GvAV (PL_defgv) = coro->invoke_av;
		1781	coro->invoke_av = 0;
		1782
		1783	return 0;
		1784	}
		1785	}
		1786
		1787	static void
		1788	slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1789	{
		1790	HV *hv = (HV *)SvRV (coro_current);
		1791	struct coro *coro = SvSTATE_hv ((SV *)hv);
		1792
		1793	if (expect_true (coro->saved_deffh))
		1794	{
		1795	/* subsequent iteration */
		1796	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1797	coro->saved_deffh = 0;
		1798
		1799	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
		1800	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1801	{
		1802	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
		1803	coro->invoke_av = newAV ();
		1804
		1805	frame->prepare = prepare_nop;
		1806	}
		1807	else
		1808	{
		1809	av_clear (GvAV (PL_defgv));
		1810	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
		1811
		1812	coro->prio = 0;
		1813
		1814	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1815	api_trace (aTHX_ coro_current, 0);
		1816
		1817	frame->prepare = prepare_schedule;
		1818	av_push (av_async_pool, SvREFCNT_inc (hv));
		1819	}
		1820	}
		1821	else
		1822	{
		1823	/* first iteration, simply fall through */
		1824	frame->prepare = prepare_nop;
		1825	}
		1826
		1827	frame->check = slf_check_pool_handler;
		1828	frame->data = (void *)coro;
		1829	}
		1830
		1831	/*****************************************************************************/
		1832	/* rouse callback */
		1833
		1834	#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
		1835
		1836	static void
		1837	coro_rouse_callback (pTHX_ CV *cv)
		1838	{
		1839	dXSARGS;
		1840	SV *data = (SV *)GENSUB_ARG;
		1841
		1842	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1843	{
		1844	/* first call, set args */
		1845	AV *av = newAV ();
		1846	SV *coro = SvRV (data);
		1847
		1848	SvRV_set (data, (SV *)av);
		1849	api_ready (aTHX_ coro);
		1850	SvREFCNT_dec (coro);
		1851
		1852	/* better take a full copy of the arguments */
		1853	while (items--)
		1854	av_store (av, items, newSVsv (ST (items)));
		1855	}
		1856
		1857	XSRETURN_EMPTY;
		1858	}
		1859
		1860	static int
		1861	slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
		1862	{
		1863	SV *data = (SV *)frame->data;
		1864
		1865	if (CORO_THROW)
		1866	return 0;
		1867
		1868	if (SvTYPE (SvRV (data)) != SVt_PVAV)
		1869	return 1;
		1870
		1871	/* now push all results on the stack */
		1872	{
		1873	dSP;
		1874	AV *av = (AV *)SvRV (data);
		1875	int i;
		1876
		1877	EXTEND (SP, AvFILLp (av) + 1);
		1878	for (i = 0; i <= AvFILLp (av); ++i)
		1879	PUSHs (sv_2mortal (AvARRAY (av)[i]));
		1880
		1881	/* we have stolen the elements, so ste length to zero and free */
		1882	AvFILLp (av) = -1;
		1883	av_undef (av);
		1884
		1885	PUTBACK;
		1886	}
		1887
		1888	return 0;
		1889	}
		1890
		1891	static void
		1892	slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1893	{
		1894	SV *cb;
		1895
		1896	if (items)
		1897	cb = arg [0];
		1898	else
		1899	{
		1900	struct coro *coro = SvSTATE_current;
		1901
		1902	if (!coro->rouse_cb)
		1903	croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
		1904
		1905	cb = sv_2mortal (coro->rouse_cb);
		1906	coro->rouse_cb = 0;
		1907	}
		1908
		1909	if (!SvROK (cb)
		1910	|| SvTYPE (SvRV (cb)) != SVt_PVCV
		1911	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
		1912	croak ("Coro::rouse_wait called with illegal callback argument,");
		1913
		1914	{
		1915	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
		1916	SV *data = (SV *)GENSUB_ARG;
		1917
		1918	frame->data = (void *)data;
		1919	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
		1920	frame->check = slf_check_rouse_wait;
		1921	}
		1922	}
		1923
		1924	static SV *
		1925	coro_new_rouse_cb (pTHX)
		1926	{
		1927	HV *hv = (HV *)SvRV (coro_current);
		1928	struct coro *coro = SvSTATE_hv (hv);
		1929	SV *data = newRV_inc ((SV *)hv);
		1930	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
		1931
		1932	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
		1933	SvREFCNT_dec (data); /* magicext increases the refcount */
		1934
		1935	SvREFCNT_dec (coro->rouse_cb);
		1936	coro->rouse_cb = SvREFCNT_inc_NN (cb);
		1937
		1938	return cb;
		1939	}
		1940
		1941	/*****************************************************************************/
		1942	/* schedule-like-function opcode (SLF) */
		1943
		1944	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
		1945	static const CV *slf_cv;
		1946	static SV **slf_argv;
		1947	static int slf_argc, slf_arga; /* count, allocated */
		1948	static I32 slf_ax; /* top of stack, for restore */
		1949
		1950	/* this restores the stack in the case we patched the entersub, to */
		1951	/* recreate the stack frame as perl will on following calls */
		1952	/* since entersub cleared the stack */
		1953	static OP *
		1954	pp_restore (pTHX)
		1955	{
		1956	int i;
		1957	SV **SP = PL_stack_base + slf_ax;
		1958
		1959	PUSHMARK (SP);
		1960
		1961	EXTEND (SP, slf_argc + 1);
		1962
		1963	for (i = 0; i < slf_argc; ++i)
		1964	PUSHs (sv_2mortal (slf_argv [i]));
		1965
		1966	PUSHs ((SV *)CvGV (slf_cv));
		1967
		1968	RETURNOP (slf_restore.op_first);
		1969	}
		1970
		1971	static void
		1972	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1973	{
		1974	SV **arg = (SV **)slf_frame.data;
		1975
		1976	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1977	}
		1978
		1979	static void
		1980	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1981	{
		1982	if (items != 2)
		1983	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1984
		1985	frame->prepare = slf_prepare_transfer;
		1986	frame->check = slf_check_nop;
		1987	frame->data = (void *)arg; /* let's hope it will stay valid */
		1988	}
		1989
		1990	static void
		1991	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1992	{
		1993	frame->prepare = prepare_schedule;
		1994	frame->check = slf_check_nop;
		1995	}
		1996
		1997	static void
		1998	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1999	{
		2000	frame->prepare = prepare_cede;
		2001	frame->check = slf_check_nop;
		2002	}
		2003
		2004	static void
		2005	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2006	{
		2007	frame->prepare = prepare_cede_notself;
		2008	frame->check = slf_check_nop;
		2009	}
		2010
		2011	/*
		2012	* these not obviously related functions are all rolled into one
		2013	* function to increase chances that they all will call transfer with the same
		2014	* stack offset
		2015	* SLF stands for "schedule-like-function".
		2016	*/
		2017	static OP *
		2018	pp_slf (pTHX)
		2019	{
		2020	I32 checkmark; /* mark SP to see how many elements check has pushed */
		2021
		2022	/* set up the slf frame, unless it has already been set-up */
		2023	/* the latter happens when a new coro has been started */
		2024	/* or when a new cctx was attached to an existing coroutine */
		2025	if (expect_true (!slf_frame.prepare))
		2026	{
		2027	/* first iteration */
		2028	dSP;
		2029	SV **arg = PL_stack_base + TOPMARK + 1;
		2030	int items = SP - arg; /* args without function object */
		2031	SV *gv = *sp;
		2032
		2033	/* do a quick consistency check on the "function" object, and if it isn't */
		2034	/* for us, divert to the real entersub */
		2035	if (SvTYPE (gv) != SVt_PVGV
		2036	|| !GvCV (gv)
		2037	|| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
		2038	return PL_ppaddr[OP_ENTERSUB](aTHX);
		2039
		2040	if (!(PL_op->op_flags & OPf_STACKED))
		2041	{
		2042	/* ampersand-form of call, use @_ instead of stack */
		2043	AV *av = GvAV (PL_defgv);
		2044	arg = AvARRAY (av);
		2045	items = AvFILLp (av) + 1;
		2046	}
		2047
		2048	/* now call the init function, which needs to set up slf_frame */
		2049	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		2050	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		2051
		2052	/* pop args */
		2053	SP = PL_stack_base + POPMARK;
		2054
		2055	PUTBACK;
		2056	}
		2057
		2058	/* now that we have a slf_frame, interpret it! */
		2059	/* we use a callback system not to make the code needlessly */
		2060	/* complicated, but so we can run multiple perl coros from one cctx */
		2061
		2062	do
		2063	{
		2064	struct coro_transfer_args ta;
		2065
		2066	slf_frame.prepare (aTHX_ &ta);
		2067	TRANSFER (ta, 0);
		2068
		2069	checkmark = PL_stack_sp - PL_stack_base;
		2070	}
		2071	while (slf_frame.check (aTHX_ &slf_frame));
		2072
		2073	slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
		2074
		2075	/* exception handling */
		2076	if (expect_false (CORO_THROW))
		2077	{
		2078	SV *exception = sv_2mortal (CORO_THROW);
		2079
		2080	CORO_THROW = 0;
		2081	sv_setsv (ERRSV, exception);
		2082	croak (0);
		2083	}
		2084
		2085	/* return value handling - mostly like entersub */
		2086	/* make sure we put something on the stack in scalar context */
		2087	if (GIMME_V == G_SCALAR)
		2088	{
		2089	dSP;
		2090	SV **bot = PL_stack_base + checkmark;
		2091
		2092	if (sp == bot) /* too few, push undef */
		2093	bot [1] = &PL_sv_undef;
		2094	else if (sp != bot + 1) /* too many, take last one */
		2095	bot [1] = *sp;
		2096
		2097	SP = bot + 1;
		2098
		2099	PUTBACK;
		2100	}
		2101
		2102	return NORMAL;
		2103	}
		2104
		2105	static void
		2106	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
		2107	{
		2108	int i;
		2109	SV **arg = PL_stack_base + ax;
		2110	int items = PL_stack_sp - arg + 1;
		2111
		2112	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		2113
		2114	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		2115	&& PL_op->op_ppaddr != pp_slf)
		2116	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		2117
		2118	CvFLAGS (cv) |= CVf_SLF;
		2119	CvXSUBANY (cv).any_ptr = (void *)init_cb;
		2120	slf_cv = cv;
		2121
		2122	/* we patch the op, and then re-run the whole call */
		2123	/* we have to put the same argument on the stack for this to work */
		2124	/* and this will be done by pp_restore */
		2125	slf_restore.op_next = (OP *)&slf_restore;
		2126	slf_restore.op_type = OP_CUSTOM;
		2127	slf_restore.op_ppaddr = pp_restore;
		2128	slf_restore.op_first = PL_op;
		2129
		2130	slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
		2131
		2132	if (PL_op->op_flags & OPf_STACKED)
		2133	{
		2134	if (items > slf_arga)
		2135	{
		2136	slf_arga = items;
		2137	free (slf_argv);
		2138	slf_argv = malloc (slf_arga * sizeof (SV *));
		2139	}
		2140
		2141	slf_argc = items;
		2142
		2143	for (i = 0; i < items; ++i)
		2144	slf_argv [i] = SvREFCNT_inc (arg [i]);
		2145	}
		2146	else
		2147	slf_argc = 0;
		2148
		2149	PL_op->op_ppaddr = pp_slf;
		2150	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
		2151
		2152	PL_op = (OP *)&slf_restore;
1710	}	2153	}
1711		2154
1712	/*****************************************************************************/	2155	/*****************************************************************************/
1713	/* PerlIO::cede */	2156	/* PerlIO::cede */
1714		2157
…		…
1783	PerlIOBuf_get_cnt,	2226	PerlIOBuf_get_cnt,
1784	PerlIOBuf_set_ptrcnt,	2227	PerlIOBuf_set_ptrcnt,
1785	};	2228	};
1786		2229
1787	/*****************************************************************************/	2230	/*****************************************************************************/
		2231	/* Coro::Semaphore & Coro::Signal */
1788		2232
1789	static const CV *slf_cv; /* for quick consistency check */
1790
1791	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792	static SV *slf_arg0;
1793	static SV *slf_arg1;
1794	static SV *slf_arg2;
1795
1796	/* this restores the stack in the case we patched the entersub, to */
1797	/* recreate the stack frame as perl will on following calls */
1798	/* since entersub cleared the stack */
1799	static OP *	2233	static SV *
1800	pp_restore (pTHX)	2234	coro_waitarray_new (pTHX_ int count)
1801	{	2235	{
1802	dSP;	2236	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2237	AV *av = newAV ();
		2238	SV **ary;
1803		2239
1804	PUSHMARK (SP);	2240	/* unfortunately, building manually saves memory */
		2241	Newx (ary, 2, SV *);
		2242	AvALLOC (av) = ary;
		2243	/*AvARRAY (av) = ary;*/
		2244	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
		2245	AvMAX (av) = 1;
		2246	AvFILLp (av) = 0;
		2247	ary [0] = newSViv (count);
1805		2248
1806	EXTEND (SP, 3);	2249	return newRV_noinc ((SV *)av);
1807	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810	PUSHs ((SV *)CvGV (slf_cv));
1811
1812	RETURNOP (slf_restore.op_first);
1813	}	2250	}
1814		2251
1815	static void	2252	/* semaphore */
1816	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817	{
1818	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819	}
1820		2253
1821	static void	2254	static void
1822	slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823	{
1824	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826	frame->prepare = slf_prepare_set_stacklevel;
1827	frame->check = slf_check_nop;
1828	frame->data = (void *)SvIV (arg [0]);
1829	}
1830
1831	static void
1832	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833	{
1834	SV **arg = (SV **)slf_frame.data;
1835
1836	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837	}
1838
1839	static void
1840	slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841	{
1842	if (items != 2)
1843	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845	frame->prepare = slf_prepare_transfer;
1846	frame->check = slf_check_nop;
1847	frame->data = (void *)arg; /* let's hope it will stay valid */
1848	}
1849
1850	static void
1851	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852	{
1853	frame->prepare = prepare_schedule;
1854	frame->check = slf_check_nop;
1855	}
1856
1857	static void
1858	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859	{
1860	frame->prepare = prepare_cede;
1861	frame->check = slf_check_nop;
1862	}
1863
1864	static void
1865	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866	{
1867	frame->prepare = prepare_cede_notself;
1868	frame->check = slf_check_nop;
1869	}
1870
1871	/* we hijack an hopefully unused CV flag for our purposes */
1872	#define CVf_SLF 0x4000
1873
1874	/*
1875	* these not obviously related functions are all rolled into one
1876	* function to increase chances that they all will call transfer with the same
1877	* stack offset
1878	* SLF stands for "schedule-like-function".
1879	*/
1880	static OP *
1881	pp_slf (pTHX)
1882	{
1883	I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885	/* set up the slf frame, unless it has already been set-up */
1886	/* the latter happens when a new coro has been started */
1887	/* or when a new cctx was attached to an existing coroutine */
1888	if (expect_true (!slf_frame.prepare))
1889	{
1890	/* first iteration */
1891	dSP;
1892	SV **arg = PL_stack_base + TOPMARK + 1;
1893	int items = SP - arg; /* args without function object */
1894	SV *gv = *sp;
1895
1896	/* do a quick consistency check on the "function" object, and if it isn't */
1897	/* for us, divert to the real entersub */
1898	if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899	return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901	/* pop args */
1902	SP = PL_stack_base + POPMARK;
1903
1904	if (!(PL_op->op_flags & OPf_STACKED))
1905	{
1906	/* ampersand-form of call, use @_ instead of stack */
1907	AV *av = GvAV (PL_defgv);
1908	arg = AvARRAY (av);
1909	items = AvFILLp (av) + 1;
1910	}
1911
1912	PUTBACK;
1913
1914	/* now call the init function, which needs to set up slf_frame */
1915	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1917	}
1918
1919	/* now that we have a slf_frame, interpret it! */
1920	/* we use a callback system not to make the code needlessly */
1921	/* complicated, but so we can run multiple perl coros from one cctx */
1922
1923	do
1924	{
1925	struct coro_transfer_args ta;
1926
1927	slf_frame.prepare (aTHX_ &ta);
1928	TRANSFER (ta, 0);
1929
1930	checkmark = PL_stack_sp - PL_stack_base;
1931	}
1932	while (slf_frame.check (aTHX_ &slf_frame));
1933
1934	{
1935	dSP;
1936	SV **bot = PL_stack_base + checkmark;
1937	int gimme = GIMME_V;
1938
1939	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941	/* make sure we put something on the stack in scalar context */
1942	if (gimme == G_SCALAR)
1943	{
1944	if (sp == bot)
1945	XPUSHs (&PL_sv_undef);
1946
1947	SP = bot + 1;
1948	}
1949
1950	PUTBACK;
1951	}
1952
1953	return NORMAL;
1954	}
1955
1956	static void
1957	api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958	{
1959	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962	&& PL_op->op_ppaddr != pp_slf)
1963	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965	if (items > 3)
1966	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968	CvFLAGS (cv) |= CVf_SLF;
1969	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970	slf_cv = cv;
1971
1972	/* we patch the op, and then re-run the whole call */
1973	/* we have to put the same argument on the stack for this to work */
1974	/* and this will be done by pp_restore */
1975	slf_restore.op_next = (OP *)&slf_restore;
1976	slf_restore.op_type = OP_CUSTOM;
1977	slf_restore.op_ppaddr = pp_restore;
1978	slf_restore.op_first = PL_op;
1979
1980	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984	PL_op->op_ppaddr = pp_slf;
1985
1986	PL_op = (OP *)&slf_restore;
1987	}
1988
1989	/*****************************************************************************/
1990
1991	static void
1992	coro_semaphore_adjust (pTHX_ AV *av, int adjust)	2255	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993	{	2256	{
1994	SV *count_sv = AvARRAY (av)[0];	2257	SV *count_sv = AvARRAY (av)[0];
1995	IV count = SvIVX (count_sv);	2258	IV count = SvIVX (count_sv);
1996		2259
1997	count += adjust;	2260	count += adjust;
1998	SvIVX (count_sv) = count;	2261	SvIVX (count_sv) = count;
1999		2262
2000	/* now wake up as many waiters as possible */	2263	/* now wake up as many waiters as are expected to lock */
2001	while (count > 0 && AvFILLp (av) >= count)	2264	while (count > 0 && AvFILLp (av) > 0)
2002	{	2265	{
2003	SV *cb;	2266	SV *cb;
2004		2267
2005	/* swap first two elements so we can shift a waiter */	2268	/* swap first two elements so we can shift a waiter */
2006	AvARRAY (av)[0] = AvARRAY (av)[1];	2269	AvARRAY (av)[0] = AvARRAY (av)[1];
2007	AvARRAY (av)[1] = count_sv;	2270	AvARRAY (av)[1] = count_sv;
2008	cb = av_shift (av);	2271	cb = av_shift (av);
2009		2272
2010	if (SvOBJECT (cb))	2273	if (SvOBJECT (cb))
		2274	{
2011	api_ready (aTHX_ cb);	2275	api_ready (aTHX_ cb);
2012	else	2276	--count;
2013	croak ("callbacks not yet supported");	2277	}
		2278	else if (SvTYPE (cb) == SVt_PVCV)
		2279	{
		2280	dSP;
		2281	PUSHMARK (SP);
		2282	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2283	PUTBACK;
		2284	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2285	}
2014		2286
2015	SvREFCNT_dec (cb);	2287	SvREFCNT_dec (cb);
2016
2017	--count;
2018	}	2288	}
2019	}	2289	}
2020		2290
2021	static void	2291	static void
2022	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2292	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023	{	2293	{
2024	/* call $sem->adjust (0) to possibly wake up some waiters */	2294	/* call $sem->adjust (0) to possibly wake up some other waiters */
2025	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2295	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026	}	2296	}
2027		2297
2028	static int	2298	static int
2029	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)	2299	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030	{	2300	{
2031	AV *av = (AV *)frame->data;	2301	AV *av = (AV *)frame->data;
2032	SV *count_sv = AvARRAY (av)[0];	2302	SV *count_sv = AvARRAY (av)[0];
2033		2303
		2304	/* if we are about to throw, don't actually acquire the lock, just throw */
		2305	if (CORO_THROW)
		2306	return 0;
2034	if (SvIVX (count_sv) > 0)	2307	else if (SvIVX (count_sv) > 0)
2035	{	2308	{
2036	SvSTATE_current->on_destroy = 0;	2309	SvSTATE_current->on_destroy = 0;
		2310
		2311	if (acquire)
2037	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2312	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2313	else
		2314	coro_semaphore_adjust (aTHX_ av, 0);
		2315
2038	return 0;	2316	return 0;
2039	}	2317	}
2040	else	2318	else
2041	{	2319	{
2042	int i;	2320	int i;
…		…
2051	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2329	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052	return 1;	2330	return 1;
2053	}	2331	}
2054	}	2332	}
2055		2333
2056	static void	2334	static int
		2335	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2336	{
		2337	return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
		2338	}
		2339
		2340	static int
		2341	slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
		2342	{
		2343	return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
		2344	}
		2345
		2346	static void
2057	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2347	slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058	{	2348	{
2059	AV *av = (AV *)SvRV (arg [0]);	2349	AV *av = (AV *)SvRV (arg [0]);
2060		2350
2061	if (SvIVX (AvARRAY (av)[0]) > 0)	2351	if (SvIVX (AvARRAY (av)[0]) > 0)
2062	{	2352	{
…		…
2072		2362
2073	/* to avoid race conditions when a woken-up coro gets terminated */	2363	/* to avoid race conditions when a woken-up coro gets terminated */
2074	/* we arrange for a temporary on_destroy that calls adjust (0) */	2364	/* we arrange for a temporary on_destroy that calls adjust (0) */
2075	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2365	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2076	}	2366	}
		2367	}
2077		2368
		2369	static void
		2370	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2371	{
		2372	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2078	frame->check = slf_check_semaphore_down;	2373	frame->check = slf_check_semaphore_down;
		2374	}
2079		2375
		2376	static void
		2377	slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2378	{
		2379	if (items >= 2)
		2380	{
		2381	/* callback form */
		2382	AV *av = (AV *)SvRV (arg [0]);
		2383	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
		2384
		2385	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
		2386
		2387	if (SvIVX (AvARRAY (av)[0]) > 0)
		2388	coro_semaphore_adjust (aTHX_ av, 0);
		2389
		2390	frame->prepare = prepare_nop;
		2391	frame->check = slf_check_nop;
		2392	}
		2393	else
		2394	{
		2395	slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
		2396	frame->check = slf_check_semaphore_wait;
		2397	}
		2398	}
		2399
		2400	/* signal */
		2401
		2402	static void
		2403	coro_signal_wake (pTHX_ AV *av, int count)
		2404	{
		2405	SvIVX (AvARRAY (av)[0]) = 0;
		2406
		2407	/* now signal count waiters */
		2408	while (count > 0 && AvFILLp (av) > 0)
		2409	{
		2410	SV *cb;
		2411
		2412	/* swap first two elements so we can shift a waiter */
		2413	cb = AvARRAY (av)[0];
		2414	AvARRAY (av)[0] = AvARRAY (av)[1];
		2415	AvARRAY (av)[1] = cb;
		2416
		2417	cb = av_shift (av);
		2418
		2419	api_ready (aTHX_ cb);
		2420	sv_setiv (cb, 0); /* signal waiter */
		2421	SvREFCNT_dec (cb);
		2422
		2423	--count;
		2424	}
		2425	}
		2426
		2427	static int
		2428	slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
		2429	{
		2430	/* if we are about to throw, also stop waiting */
		2431	return SvROK ((SV *)frame->data) && !CORO_THROW;
		2432	}
		2433
		2434	static void
		2435	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2436	{
		2437	AV *av = (AV *)SvRV (arg [0]);
		2438
		2439	if (SvIVX (AvARRAY (av)[0]))
		2440	{
		2441	SvIVX (AvARRAY (av)[0]) = 0;
		2442	frame->prepare = prepare_nop;
		2443	frame->check = slf_check_nop;
		2444	}
		2445	else
		2446	{
		2447	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
		2448
		2449	av_push (av, waiter);
		2450
		2451	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
		2452	frame->prepare = prepare_schedule;
		2453	frame->check = slf_check_signal_wait;
		2454	}
2080	}	2455	}
2081		2456
2082	/*****************************************************************************/	2457	/*****************************************************************************/
		2458	/* Coro::AIO */
2083		2459
2084	#define GENSUB_ARG CvXSUBANY (cv).any_ptr	2460	#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2085		2461
2086	/* create a closure from XS, returns a code reference */	2462	/* helper storage struct */
2087	/* the arg can be accessed via GENSUB_ARG from the callback */	2463	struct io_state
2088	/* the callback must use dXSARGS/XSRETURN */
2089	static SV *
2090	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2091	{	2464	{
2092	CV *cv = (CV *)NEWSV (0, 0);	2465	int errorno;
		2466	I32 laststype; /* U16 in 5.10.0 */
		2467	int laststatval;
		2468	Stat_t statcache;
		2469	};
2093		2470
		2471	static void
		2472	coro_aio_callback (pTHX_ CV *cv)
		2473	{
		2474	dXSARGS;
		2475	AV *state = (AV *)GENSUB_ARG;
		2476	SV *coro = av_pop (state);
		2477	SV *data_sv = newSV (sizeof (struct io_state));
		2478
		2479	av_extend (state, items - 1);
		2480
2094	sv_upgrade ((SV *)cv, SVt_PVCV);	2481	sv_upgrade (data_sv, SVt_PV);
		2482	SvCUR_set (data_sv, sizeof (struct io_state));
		2483	SvPOK_only (data_sv);
2095		2484
2096	CvANON_on (cv);	2485	{
2097	CvISXSUB_on (cv);	2486	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2098	CvXSUB (cv) = xsub;
2099	GENSUB_ARG = arg;
2100		2487
2101	return newRV_noinc ((SV *)cv);	2488	data->errorno = errno;
		2489	data->laststype = PL_laststype;
		2490	data->laststatval = PL_laststatval;
		2491	data->statcache = PL_statcache;
		2492	}
		2493
		2494	/* now build the result vector out of all the parameters and the data_sv */
		2495	{
		2496	int i;
		2497
		2498	for (i = 0; i < items; ++i)
		2499	av_push (state, SvREFCNT_inc_NN (ST (i)));
		2500	}
		2501
		2502	av_push (state, data_sv);
		2503
		2504	api_ready (aTHX_ coro);
		2505	SvREFCNT_dec (coro);
		2506	SvREFCNT_dec ((AV *)state);
		2507	}
		2508
		2509	static int
		2510	slf_check_aio_req (pTHX_ struct CoroSLF *frame)
		2511	{
		2512	AV *state = (AV *)frame->data;
		2513
		2514	/* if we are about to throw, return early */
		2515	/* this does not cancel the aio request, but at least */
		2516	/* it quickly returns */
		2517	if (CORO_THROW)
		2518	return 0;
		2519
		2520	/* one element that is an RV? repeat! */
		2521	if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
		2522	return 1;
		2523
		2524	/* restore status */
		2525	{
		2526	SV *data_sv = av_pop (state);
		2527	struct io_state *data = (struct io_state *)SvPVX (data_sv);
		2528
		2529	errno = data->errorno;
		2530	PL_laststype = data->laststype;
		2531	PL_laststatval = data->laststatval;
		2532	PL_statcache = data->statcache;
		2533
		2534	SvREFCNT_dec (data_sv);
		2535	}
		2536
		2537	/* push result values */
		2538	{
		2539	dSP;
		2540	int i;
		2541
		2542	EXTEND (SP, AvFILLp (state) + 1);
		2543	for (i = 0; i <= AvFILLp (state); ++i)
		2544	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
		2545
		2546	PUTBACK;
		2547	}
		2548
		2549	return 0;
		2550	}
		2551
		2552	static void
		2553	slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2554	{
		2555	AV *state = (AV *)sv_2mortal ((SV *)newAV ());
		2556	SV *coro_hv = SvRV (coro_current);
		2557	struct coro *coro = SvSTATE_hv (coro_hv);
		2558
		2559	/* put our coroutine id on the state arg */
		2560	av_push (state, SvREFCNT_inc_NN (coro_hv));
		2561
		2562	/* first see whether we have a non-zero priority and set it as AIO prio */
		2563	if (coro->prio)
		2564	{
		2565	dSP;
		2566
		2567	static SV *prio_cv;
		2568	static SV *prio_sv;
		2569
		2570	if (expect_false (!prio_cv))
		2571	{
		2572	prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
		2573	prio_sv = newSViv (0);
		2574	}
		2575
		2576	PUSHMARK (SP);
		2577	sv_setiv (prio_sv, coro->prio);
		2578	XPUSHs (prio_sv);
		2579
		2580	PUTBACK;
		2581	call_sv (prio_cv, G_VOID | G_DISCARD);
		2582	}
		2583
		2584	/* now call the original request */
		2585	{
		2586	dSP;
		2587	CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
		2588	int i;
		2589
		2590	PUSHMARK (SP);
		2591
		2592	/* first push all args to the stack */
		2593	EXTEND (SP, items + 1);
		2594
		2595	for (i = 0; i < items; ++i)
		2596	PUSHs (arg [i]);
		2597
		2598	/* now push the callback closure */
		2599	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
		2600
		2601	/* now call the AIO function - we assume our request is uncancelable */
		2602	PUTBACK;
		2603	call_sv ((SV *)req, G_VOID | G_DISCARD);
		2604	}
		2605
		2606	/* now that the requets is going, we loop toll we have a result */
		2607	frame->data = (void *)state;
		2608	frame->prepare = prepare_schedule;
		2609	frame->check = slf_check_aio_req;
		2610	}
		2611
		2612	static void
		2613	coro_aio_req_xs (pTHX_ CV *cv)
		2614	{
		2615	dXSARGS;
		2616
		2617	CORO_EXECUTE_SLF_XS (slf_init_aio_req);
		2618
		2619	XSRETURN_EMPTY;
2102	}	2620	}
2103		2621
2104	/*****************************************************************************/	2622	/*****************************************************************************/
2105		2623
2106	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2624	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
…		…
2176	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2694	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2177	}	2695	}
2178		2696
2179	SV *	2697	SV *
2180	new (char *klass, ...)	2698	new (char *klass, ...)
		2699	ALIAS:
		2700	Coro::new = 1
2181	CODE:	2701	CODE:
2182	{	2702	{
2183	struct coro *coro;	2703	struct coro *coro;
2184	MAGIC *mg;	2704	MAGIC *mg;
2185	HV *hv;	2705	HV *hv;
		2706	CV *cb;
2186	int i;	2707	int i;
		2708
		2709	if (items > 1)
		2710	{
		2711	cb = coro_sv_2cv (aTHX_ ST (1));
		2712
		2713	if (!ix)
		2714	{
		2715	if (CvISXSUB (cb))
		2716	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2717
		2718	if (!CvROOT (cb))
		2719	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2720	}
		2721	}
2187		2722
2188	Newz (0, coro, 1, struct coro);	2723	Newz (0, coro, 1, struct coro);
2189	coro->args = newAV ();	2724	coro->args = newAV ();
2190	coro->flags = CF_NEW;	2725	coro->flags = CF_NEW;
2191		2726
…		…
2196	coro->hv = hv = newHV ();	2731	coro->hv = hv = newHV ();
2197	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);	2732	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2198	mg->mg_flags |= MGf_DUP;	2733	mg->mg_flags |= MGf_DUP;
2199	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2734	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2200		2735
		2736	if (items > 1)
		2737	{
2201	av_extend (coro->args, items - 1);	2738	av_extend (coro->args, items - 1 + ix - 1);
		2739
		2740	if (ix)
		2741	{
		2742	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2743	cb = cv_coro_run;
		2744	}
		2745
		2746	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2747
2202	for (i = 1; i < items; i++)	2748	for (i = 2; i < items; i++)
2203	av_push (coro->args, newSVsv (ST (i)));	2749	av_push (coro->args, newSVsv (ST (i)));
		2750	}
2204	}	2751	}
2205	OUTPUT:	2752	OUTPUT:
2206	RETVAL	2753	RETVAL
2207
2208	void
2209	_set_stacklevel (...)
2210	CODE:
2211	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2212		2754
2213	void	2755	void
2214	transfer (...)	2756	transfer (...)
2215	PROTOTYPE: $$	2757	PROTOTYPE: $$
2216	CODE:	2758	CODE:
2217	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);	2759	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2218		2760
2219	bool	2761	bool
2220	_destroy (SV *coro_sv)	2762	_destroy (SV *coro_sv)
2221	CODE:	2763	CODE:
2222	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2764	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2340		2882
2341	void	2883	void
2342	throw (Coro::State self, SV *throw = &PL_sv_undef)	2884	throw (Coro::State self, SV *throw = &PL_sv_undef)
2343	PROTOTYPE: $;$	2885	PROTOTYPE: $;$
2344	CODE:	2886	CODE:
		2887	{
		2888	struct coro *current = SvSTATE_current;
		2889	SV **throwp = self == current ? &CORO_THROW : &self->except;
2345	SvREFCNT_dec (self->throw);	2890	SvREFCNT_dec (*throwp);
2346	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2891	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
		2892	}
2347		2893
2348	void	2894	void
2349	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2895	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2350	PROTOTYPE: $;$	2896	PROTOTYPE: $;$
2351	C_ARGS: aTHX_ coro, flags	2897	C_ARGS: aTHX_ coro, flags
…		…
2400	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	2946	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2401		2947
2402	SV *tmp = *src; *src = *dst; *dst = tmp;	2948	SV *tmp = *src; *src = *dst; *dst = tmp;
2403	}	2949	}
2404		2950
		2951
2405	MODULE = Coro::State PACKAGE = Coro	2952	MODULE = Coro::State PACKAGE = Coro
2406		2953
2407	BOOT:	2954	BOOT:
2408	{	2955	{
2409	int i;	2956	int i;
2410		2957
2411	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	2958	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2412	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2959	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2413	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2960	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2414		2961	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
		2962	cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2415	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2963	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2416	SvREADONLY_on (coro_current);	2964	SvREADONLY_on (coro_current);
		2965
		2966	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
		2967	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
		2968	cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
		2969	cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2417		2970
2418	coro_stash = gv_stashpv ("Coro", TRUE);	2971	coro_stash = gv_stashpv ("Coro", TRUE);
2419		2972
2420	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2973	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2421	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2974	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
…		…
2436	coroapi.ready = api_ready;	2989	coroapi.ready = api_ready;
2437	coroapi.is_ready = api_is_ready;	2990	coroapi.is_ready = api_is_ready;
2438	coroapi.nready = coro_nready;	2991	coroapi.nready = coro_nready;
2439	coroapi.current = coro_current;	2992	coroapi.current = coro_current;
2440		2993
2441	GCoroAPI = &coroapi;	2994	/*GCoroAPI = &coroapi;*/
2442	sv_setiv (sv, (IV)&coroapi);	2995	sv_setiv (sv, (IV)&coroapi);
2443	SvREADONLY_on (sv);	2996	SvREADONLY_on (sv);
2444	}	2997	}
2445	}	2998	}
2446		2999
2447	void	3000	void
2448	schedule (...)	3001	schedule (...)
2449	CODE:	3002	CODE:
2450	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);	3003	CORO_EXECUTE_SLF_XS (slf_init_schedule);
2451		3004
2452	void	3005	void
2453	cede (...)	3006	cede (...)
2454	CODE:	3007	CODE:
2455	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);	3008	CORO_EXECUTE_SLF_XS (slf_init_cede);
2456		3009
2457	void	3010	void
2458	cede_notself (...)	3011	cede_notself (...)
2459	CODE:	3012	CODE:
2460	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);	3013	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2461		3014
2462	void	3015	void
2463	_set_current (SV *current)	3016	_set_current (SV *current)
2464	PROTOTYPE: $	3017	PROTOTYPE: $
2465	CODE:	3018	CODE:
…		…
2510	CODE:	3063	CODE:
2511	RETVAL = coro_nready;	3064	RETVAL = coro_nready;
2512	OUTPUT:	3065	OUTPUT:
2513	RETVAL	3066	RETVAL
2514		3067
2515	# for async_pool speedup
2516	void	3068	void
2517	_pool_1 (SV *cb)	3069	_pool_handler (...)
2518	CODE:	3070	CODE:
2519	{	3071	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2520	HV *hv = (HV *)SvRV (coro_current);
2521	struct coro *coro = SvSTATE_hv ((SV *)hv);
2522	AV *defav = GvAV (PL_defgv);
2523	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2524	AV *invoke_av;
2525	int i, len;
2526
2527	if (!invoke)
2528	{
2529	SV *old = PL_diehook;
2530	PL_diehook = 0;
2531	SvREFCNT_dec (old);
2532	croak ("\3async_pool terminate\2\n");
2533	}
2534
2535	SvREFCNT_dec (coro->saved_deffh);
2536	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2537
2538	hv_store (hv, "desc", sizeof ("desc") - 1,
2539	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2540
2541	invoke_av = (AV *)SvRV (invoke);
2542	len = av_len (invoke_av);
2543
2544	sv_setsv (cb, AvARRAY (invoke_av)[0]);
2545
2546	if (len > 0)
2547	{
2548	av_fill (defav, len - 1);
2549	for (i = 0; i < len; ++i)
2550	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2551	}
2552	}
2553		3072
2554	void	3073	void
2555	_pool_2 (SV *cb)	3074	async_pool (SV *cv, ...)
2556	CODE:
2557	{
2558	struct coro *coro = SvSTATE_current;
2559
2560	sv_setsv (cb, &PL_sv_undef);
2561
2562	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2563	coro->saved_deffh = 0;
2564
2565	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2566	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2567	{
2568	SV *old = PL_diehook;
2569	PL_diehook = 0;
2570	SvREFCNT_dec (old);
2571	croak ("\3async_pool terminate\2\n");
2572	}
2573
2574	av_clear (GvAV (PL_defgv));
2575	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2576	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2577
2578	coro->prio = 0;
2579
2580	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2581	api_trace (aTHX_ coro_current, 0);
2582
2583	av_push (av_async_pool, newSVsv (coro_current));
2584	}
2585
2586
2587	MODULE = Coro::State PACKAGE = Coro::AIO
2588
2589	void
2590	_get_state (SV *self)
2591	PROTOTYPE: $	3075	PROTOTYPE: &@
2592	PPCODE:	3076	PPCODE:
2593	{	3077	{
2594	AV *defav = GvAV (PL_defgv);	3078	HV *hv = (HV *)av_pop (av_async_pool);
2595	AV *av = newAV ();	3079	AV *av = newAV ();
		3080	SV *cb = ST (0);
2596	int i;	3081	int i;
2597	SV *data_sv = newSV (sizeof (struct io_state));
2598	struct io_state *data = (struct io_state *)SvPVX (data_sv);
2599	SvCUR_set (data_sv, sizeof (struct io_state));
2600	SvPOK_only (data_sv);
2601		3082
2602	data->errorno = errno;	3083	av_extend (av, items - 2);
2603	data->laststype = PL_laststype;	3084	for (i = 1; i < items; ++i)
2604	data->laststatval = PL_laststatval;
2605	data->statcache = PL_statcache;
2606
2607	av_extend (av, AvFILLp (defav) + 1 + 1);
2608
2609	for (i = 0; i <= AvFILLp (defav); ++i)
2610	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));	3085	av_push (av, SvREFCNT_inc_NN (ST (i)));
2611		3086
2612	av_push (av, data_sv);	3087	if ((SV *)hv == &PL_sv_undef)
2613
2614	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2615
2616	api_ready (aTHX_ self);
2617	}
2618
2619	void
2620	_set_state (SV *state)
2621	PROTOTYPE: $
2622	PPCODE:
2623	{
2624	AV *av = (AV *)SvRV (state);
2625	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2626	int i;
2627
2628	errno = data->errorno;
2629	PL_laststype = data->laststype;
2630	PL_laststatval = data->laststatval;
2631	PL_statcache = data->statcache;
2632
2633	EXTEND (SP, AvFILLp (av));
2634	for (i = 0; i < AvFILLp (av); ++i)
2635	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2636	}
2637
2638
2639	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2640
2641	BOOT:
2642	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2643
2644	void
2645	_schedule (...)
2646	CODE:
2647	{
2648	static int incede;
2649
2650	api_cede_notself (aTHX);
2651
2652	++incede;
2653	while (coro_nready >= incede && api_cede (aTHX))
2654	;
2655
2656	sv_setsv (sv_activity, &PL_sv_undef);
2657	if (coro_nready >= incede)
2658	{	3088	{
2659	PUSHMARK (SP);	3089	PUSHMARK (SP);
		3090	EXTEND (SP, 2);
		3091	PUSHs (sv_Coro);
		3092	PUSHs ((SV *)cv_pool_handler);
2660	PUTBACK;	3093	PUTBACK;
2661	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);	3094	call_sv ((SV *)cv_coro_new, G_SCALAR);
2662	SPAGAIN;	3095	SPAGAIN;
		3096
		3097	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2663	}	3098	}
2664		3099
2665	--incede;	3100	{
		3101	struct coro *coro = SvSTATE_hv (hv);
		3102
		3103	assert (!coro->invoke_cb);
		3104	assert (!coro->invoke_av);
		3105	coro->invoke_cb = SvREFCNT_inc (cb);
		3106	coro->invoke_av = av;
		3107	}
		3108
		3109	api_ready (aTHX_ (SV *)hv);
		3110
		3111	if (GIMME_V != G_VOID)
		3112	XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
		3113	else
		3114	SvREFCNT_dec (hv);
2666	}	3115	}
		3116
		3117	SV *
		3118	rouse_cb ()
		3119	PROTOTYPE:
		3120	CODE:
		3121	RETVAL = coro_new_rouse_cb (aTHX);
		3122	OUTPUT:
		3123	RETVAL
		3124
		3125	void
		3126	rouse_wait (...)
		3127	PROTOTYPE: ;$
		3128	PPCODE:
		3129	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2667		3130
2668		3131
2669	MODULE = Coro::State PACKAGE = PerlIO::cede	3132	MODULE = Coro::State PACKAGE = PerlIO::cede
2670		3133
2671	BOOT:	3134	BOOT:
2672	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3135	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2673		3136
		3137
2674	MODULE = Coro::State PACKAGE = Coro::Semaphore	3138	MODULE = Coro::State PACKAGE = Coro::Semaphore
2675		3139
2676	SV *	3140	SV *
2677	new (SV *klass, SV *count_ = 0)	3141	new (SV *klass, SV *count = 0)
2678	CODE:	3142	CODE:
2679	{	3143	RETVAL = sv_bless (
2680	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	3144	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2681	AV *av = newAV ();	3145	GvSTASH (CvGV (cv))
2682	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));	3146	);
2683	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));	3147	OUTPUT:
2684	}	3148	RETVAL
		3149
		3150	# helper for Coro::Channel
		3151	SV *
		3152	_alloc (int count)
		3153	CODE:
		3154	RETVAL = coro_waitarray_new (aTHX_ count);
2685	OUTPUT:	3155	OUTPUT:
2686	RETVAL	3156	RETVAL
2687		3157
2688	SV *	3158	SV *
2689	count (SV *self)	3159	count (SV *self)
…		…
2698	adjust = 1	3168	adjust = 1
2699	CODE:	3169	CODE:
2700	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);	3170	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2701		3171
2702	void	3172	void
2703	down (SV *self)	3173	down (...)
2704	CODE:	3174	CODE:
2705	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);	3175	CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
		3176
		3177	void
		3178	wait (...)
		3179	CODE:
		3180	CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2706		3181
2707	void	3182	void
2708	try (SV *self)	3183	try (SV *self)
2709	PPCODE:	3184	PPCODE:
2710	{	3185	{
…		…
2722	XSRETURN_NO;	3197	XSRETURN_NO;
2723	}	3198	}
2724		3199
2725	void	3200	void
2726	waiters (SV *self)	3201	waiters (SV *self)
2727	CODE:	3202	PPCODE:
2728	{	3203	{
2729	AV *av = (AV *)SvRV (self);	3204	AV *av = (AV *)SvRV (self);
		3205	int wcount = AvFILLp (av) + 1 - 1;
2730		3206
2731	if (GIMME_V == G_SCALAR)	3207	if (GIMME_V == G_SCALAR)
2732	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));	3208	XPUSHs (sv_2mortal (newSViv (wcount)));
2733	else	3209	else
2734	{	3210	{
2735	int i;	3211	int i;
2736	EXTEND (SP, AvFILLp (av) + 1 - 1);	3212	EXTEND (SP, wcount);
2737	for (i = 1; i <= AvFILLp (av); ++i)	3213	for (i = 1; i <= wcount; ++i)
2738	PUSHs (newSVsv (AvARRAY (av)[i]));	3214	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2739	}	3215	}
2740	}	3216	}
2741		3217
		3218	MODULE = Coro::State PACKAGE = Coro::Signal
		3219
		3220	SV *
		3221	new (SV *klass)
		3222	CODE:
		3223	RETVAL = sv_bless (
		3224	coro_waitarray_new (aTHX_ 0),
		3225	GvSTASH (CvGV (cv))
		3226	);
		3227	OUTPUT:
		3228	RETVAL
		3229
		3230	void
		3231	wait (...)
		3232	CODE:
		3233	CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
		3234
		3235	void
		3236	broadcast (SV *self)
		3237	CODE:
		3238	{
		3239	AV *av = (AV *)SvRV (self);
		3240	coro_signal_wake (aTHX_ av, AvFILLp (av));
		3241	}
		3242
		3243	void
		3244	send (SV *self)
		3245	CODE:
		3246	{
		3247	AV *av = (AV *)SvRV (self);
		3248
		3249	if (AvFILLp (av))
		3250	coro_signal_wake (aTHX_ av, 1);
		3251	else
		3252	SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
		3253	}
		3254
		3255	IV
		3256	awaited (SV *self)
		3257	CODE:
		3258	RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
		3259	OUTPUT:
		3260	RETVAL
		3261
		3262
		3263	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		3264
		3265	BOOT:
		3266	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		3267
		3268	void
		3269	_schedule (...)
		3270	CODE:
		3271	{
		3272	static int incede;
		3273
		3274	api_cede_notself (aTHX);
		3275
		3276	++incede;
		3277	while (coro_nready >= incede && api_cede (aTHX))
		3278	;
		3279
		3280	sv_setsv (sv_activity, &PL_sv_undef);
		3281	if (coro_nready >= incede)
		3282	{
		3283	PUSHMARK (SP);
		3284	PUTBACK;
		3285	call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		3286	}
		3287
		3288	--incede;
		3289	}
		3290
		3291
		3292	MODULE = Coro::State PACKAGE = Coro::AIO
		3293
		3294	void
		3295	_register (char *target, char *proto, SV *req)
		3296	CODE:
		3297	{
		3298	CV *req_cv = coro_sv_2cv (aTHX_ req);
		3299	/* newXSproto doesn't return the CV on 5.8 */
		3300	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
		3301	sv_setpv ((SV *)slf_cv, proto);
		3302	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
		3303	}
		3304

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