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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC vs.
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
15		25
16	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
17	# include <unistd.h>	27	# include <unistd.h>
18	# include <sys/mman.h>	28	# include <sys/mman.h>
19	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
71	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
72	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
73	# endif	83	# endif
74	#endif	84	#endif
75		85
		86	/* 5.8.8 */
		87	#ifndef GV_NOTQUAL
		88	# define GV_NOTQUAL 0
		89	#endif
		90	#ifndef newSV
		91	# define newSV(l) NEWSV(0,l)
		92	#endif
		93	#ifndef SvREFCNT_inc_NN
		94	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		95	#endif
		96
		97	/* 5.11 */
		98	#ifndef CxHASARGS
		99	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		100	#endif
		101
76	/* 5.8.7 */	102	/* 5.8.7 */
77	#ifndef SvRV_set	103	#ifndef SvRV_set
78	# define SvRV_set(s,v) SvRV(s) = (v)	104	# define SvRV_set(s,v) SvRV(s) = (v)
79	#endif
80
81	/* 5.8.8 */
82	#ifndef GV_NOTQUAL
83	# define GV_NOTQUAL 0
84	#endif
85	#ifndef newSV
86	# define newSV(l) NEWSV(0,l)
87	#endif	105	#endif
88		106
89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	107	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90	# undef CORO_STACKGUARD	108	# undef CORO_STACKGUARD
91	#endif	109	#endif
…		…
130	#else	148	#else
131	# define LOCK (void)0	149	# define LOCK (void)0
132	# define UNLOCK (void)0	150	# define UNLOCK (void)0
133	#endif	151	#endif
134		152
135	#define strpair(const) const, sizeof (const) - 1
136
137	/* helper storage struct for Coro::AIO */	153	/* helper storage struct for Coro::AIO */
138	struct io_state	154	struct io_state
139	{	155	{
		156	AV *res;
140	int errorno;	157	int errorno;
141	I32 laststype;	158	I32 laststype;
142	int laststatval;	159	int laststatval;
143	Stat_t statcache;	160	Stat_t statcache;
144	};	161	};
145		162
		163	static double (*nvtime)(); /* so why doesn't it take void? */
		164
146	static size_t coro_stacksize = CORO_STACKSIZE;	165	static size_t coro_stacksize = CORO_STACKSIZE;
147	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
148	static AV *main_mainstack; /* used to differentiate between $main and others */	167	static AV *main_mainstack; /* used to differentiate between $main and others */
149	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
150	static HV *coro_state_stash, *coro_stash;	169	static HV *coro_state_stash, *coro_stash;
151	static SV *coro_mortal; /* will be freed after next transfer */	170	static volatile SV *coro_mortal; /* will be freed after next transfer */
152		171
153	static GV *irsgv; /* $/ */	172	static GV *irsgv; /* $/ */
154	static GV *stdoutgv; /* *STDOUT */	173	static GV *stdoutgv; /* *STDOUT */
155		174	static SV *rv_diehook;
		175	static SV *rv_warnhook;
156	static HV *hv_sig; /* %SIG */	176	static HV *hv_sig; /* %SIG */
157	static SV *sv_diehook;
158	static SV *sv_warnhook;
159		177
160	/* async_pool helper stuff */	178	/* async_pool helper stuff */
161	static SV *sv_pool_rss;	179	static SV *sv_pool_rss;
162	static SV *sv_pool_size;	180	static SV *sv_pool_size;
163	static AV *av_async_pool;	181	static AV *av_async_pool;
		182
		183	/* Coro::AnyEvent */
		184	static SV *sv_activity;
164		185
165	static struct coro_cctx *cctx_first;	186	static struct coro_cctx *cctx_first;
166	static int cctx_count, cctx_idle;	187	static int cctx_count, cctx_idle;
167		188
168	enum {	189	enum {
…		…
221		242
222	/* process data */	243	/* process data */
223	AV *mainstack;	244	AV *mainstack;
224	perl_slots *slot; /* basically the saved sp */	245	perl_slots *slot; /* basically the saved sp */
225		246
226	/* data associated with this coroutine (initial args) */	247	AV *args; /* data associated with this coroutine (initial args) */
227	AV *args;	248	int refcnt; /* coroutines are refcounted, yes */
228	int refcnt;
229	int flags; /* CF_ flags */	249	int flags; /* CF_ flags */
		250	HV *hv; /* the perl hash associated with this coro, if any */
230		251
231	/* statistics */	252	/* statistics */
232	int usecount; /* number of transfers to this coro */	253	int usecount; /* number of transfers to this coro */
233		254
234	/* coro process data */	255	/* coro process data */
235	int prio;	256	int prio;
236	SV *throw;	257	SV *throw; /* exception to be thrown */
237		258
238	/* async_pool */	259	/* async_pool */
239	SV *saved_deffh;	260	SV *saved_deffh;
240		261
241	/* linked list */	262	/* linked list */
242	struct coro *next, *prev;	263	struct coro *next, *prev;
243	HV *hv; /* the perl hash associated with this coro, if any */
244	};	264	};
245		265
246	typedef struct coro *Coro__State;	266	typedef struct coro *Coro__State;
247	typedef struct coro *Coro__State_or_hashref;	267	typedef struct coro *Coro__State_or_hashref;
248		268
…		…
255	#define PRIO_IDLE -3	275	#define PRIO_IDLE -3
256	#define PRIO_MIN -4	276	#define PRIO_MIN -4
257		277
258	/* for Coro.pm */	278	/* for Coro.pm */
259	static SV *coro_current;	279	static SV *coro_current;
		280	static SV *coro_readyhook;
260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	281	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
261	static int coro_nready;	282	static int coro_nready;
262	static struct coro *coro_first;	283	static struct coro *coro_first;
263		284
264	/** lowlevel stuff **********************************************************/	285	/** lowlevel stuff **********************************************************/
265		286
266	static SV *	287	static SV *
267	coro_get_sv (const char *name, int create)	288	coro_get_sv (pTHX_ const char *name, int create)
268	{	289	{
269	#if PERL_VERSION_ATLEAST (5,9,0)	290	#if PERL_VERSION_ATLEAST (5,10,0)
270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
271	get_sv (name, create);	292	get_sv (name, create);
272	#endif	293	#endif
273	return get_sv (name, create);	294	return get_sv (name, create);
274	}	295	}
275		296
276	static AV *	297	static AV *
277	coro_get_av (const char *name, int create)	298	coro_get_av (pTHX_ const char *name, int create)
278	{	299	{
279	#if PERL_VERSION_ATLEAST (5,9,0)	300	#if PERL_VERSION_ATLEAST (5,10,0)
280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	301	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
281	get_av (name, create);	302	get_av (name, create);
282	#endif	303	#endif
283	return get_av (name, create);	304	return get_av (name, create);
284	}	305	}
285		306
286	static HV *	307	static HV *
287	coro_get_hv (const char *name, int create)	308	coro_get_hv (pTHX_ const char *name, int create)
288	{	309	{
289	#if PERL_VERSION_ATLEAST (5,9,0)	310	#if PERL_VERSION_ATLEAST (5,10,0)
290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	311	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
291	get_hv (name, create);	312	get_hv (name, create);
292	#endif	313	#endif
293	return get_hv (name, create);	314	return get_hv (name, create);
294	}	315	}
…		…
299	AV *padlist = CvPADLIST (cv);	320	AV *padlist = CvPADLIST (cv);
300	AV *newpadlist, *newpad;	321	AV *newpadlist, *newpad;
301		322
302	newpadlist = newAV ();	323	newpadlist = newAV ();
303	AvREAL_off (newpadlist);	324	AvREAL_off (newpadlist);
304	#if PERL_VERSION_ATLEAST (5,9,0)	325	#if PERL_VERSION_ATLEAST (5,10,0)
305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	326	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
306	#else	327	#else
307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
308	#endif	329	#endif
309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	330	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
310	--AvFILLp (padlist);	331	--AvFILLp (padlist);
311		332
312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	333	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
313	av_store (newpadlist, 1, (SV *)newpad);	334	av_store (newpadlist, 1, (SV *)newpad);
314		335
315	return newpadlist;	336	return newpadlist;
316	}	337	}
317		338
…		…
347		368
348	/* casting is fun. */	369	/* casting is fun. */
349	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	370	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
350	free_padlist (aTHX_ padlist);	371	free_padlist (aTHX_ padlist);
351		372
352	SvREFCNT_dec (av);	373	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
353		374
354	return 0;	375	return 0;
355	}	376	}
356		377
357	#define PERL_MAGIC_coro PERL_MAGIC_ext	378	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		379	#define CORO_MAGIC_type_state PERL_MAGIC_ext
358		380
359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	381	static MGVTBL coro_cv_vtbl = {
		382	0, 0, 0, 0,
		383	coro_cv_free
		384	};
360		385
361	#define CORO_MAGIC(cv) \	386	#define CORO_MAGIC(sv,type) \
362	SvMAGIC (cv) \	387	SvMAGIC (sv) \
363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	388	? SvMAGIC (sv)->mg_type == type \
364	? SvMAGIC (cv) \	389	? SvMAGIC (sv) \
365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	390	: mg_find (sv, type) \
366	: 0	391	: 0
		392
		393	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		394	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
367		395
368	static struct coro *	396	static struct coro *
369	SvSTATE_ (pTHX_ SV *coro)	397	SvSTATE_ (pTHX_ SV *coro)
370	{	398	{
371	HV *stash;	399	HV *stash;
…		…
383	/* very slow, but rare, check */	411	/* very slow, but rare, check */
384	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	412	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385	croak ("Coro::State object required");	413	croak ("Coro::State object required");
386	}	414	}
387		415
388	mg = CORO_MAGIC (coro);	416	mg = CORO_MAGIC_state (coro);
389	return (struct coro *)mg->mg_ptr;	417	return (struct coro *)mg->mg_ptr;
390	}	418	}
391		419
392	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	420	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393		421
394	/* the next two functions merely cache the padlists */	422	/* the next two functions merely cache the padlists */
395	static void	423	static void
396	get_padlist (pTHX_ CV *cv)	424	get_padlist (pTHX_ CV *cv)
397	{	425	{
398	MAGIC *mg = CORO_MAGIC (cv);	426	MAGIC *mg = CORO_MAGIC_cv (cv);
399	AV *av;	427	AV *av;
400		428
401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	429	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	430	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
403	else	431	else
404	{	432	{
405	#if CORO_PREFER_PERL_FUNCTIONS	433	#if CORO_PREFER_PERL_FUNCTIONS
406	/* this is probably cleaner, but also slower? */	434	/* this is probably cleaner? but also slower! */
		435	/* in practise, it seems to be less stable */
407	CV *cp = Perl_cv_clone (cv);	436	CV *cp = Perl_cv_clone (cv);
408	CvPADLIST (cv) = CvPADLIST (cp);	437	CvPADLIST (cv) = CvPADLIST (cp);
409	CvPADLIST (cp) = 0;	438	CvPADLIST (cp) = 0;
410	SvREFCNT_dec (cp);	439	SvREFCNT_dec (cp);
411	#else	440	#else
…		…
415	}	444	}
416		445
417	static void	446	static void
418	put_padlist (pTHX_ CV *cv)	447	put_padlist (pTHX_ CV *cv)
419	{	448	{
420	MAGIC *mg = CORO_MAGIC (cv);	449	MAGIC *mg = CORO_MAGIC_cv (cv);
421	AV *av;	450	AV *av;
422		451
423	if (expect_false (!mg))	452	if (expect_false (!mg))
424	{	453	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
427	mg->mg_virtual = &vtbl_coro;
428	mg->mg_obj = (SV *)newAV ();
429	}
430		454
431	av = (AV *)mg->mg_obj;	455	av = (AV *)mg->mg_obj;
432		456
433	if (expect_false (AvFILLp (av) >= AvMAX (av)))	457	if (expect_false (AvFILLp (av) >= AvMAX (av)))
434	av_extend (av, AvMAX (av) + 1);	458	av_extend (av, AvMAX (av) + 1);
…		…
500		524
501	if (expect_true (CvDEPTH (cv)))	525	if (expect_true (CvDEPTH (cv)))
502	{	526	{
503	EXTEND (SP, 3);	527	EXTEND (SP, 3);
504	PUSHs ((SV *)CvPADLIST (cv));	528	PUSHs ((SV *)CvPADLIST (cv));
505	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	529	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
506	PUSHs ((SV *)cv);	530	PUSHs ((SV *)cv);
507		531
508	CvDEPTH (cv) = 0;	532	CvDEPTH (cv) = 0;
509	get_padlist (aTHX_ cv);	533	get_padlist (aTHX_ cv);
510	}	534	}
…		…
521		545
522	PUTBACK;	546	PUTBACK;
523	}	547	}
524		548
525	/* allocate some space on the context stack for our purposes */	549	/* allocate some space on the context stack for our purposes */
		550	/* we manually unroll here, as usually 2 slots is enough */
		551	if (SLOT_COUNT >= 1) CXINC;
		552	if (SLOT_COUNT >= 2) CXINC;
		553	if (SLOT_COUNT >= 3) CXINC;
526	{	554	{
527	/* we manually unroll here, as usually 2 slots is enough */
528	int i;	555	int i;
529	if (SLOT_COUNT >= 1) CXINC;
530	if (SLOT_COUNT >= 2) CXINC;
531	if (SLOT_COUNT >= 3) CXINC;
532	for (i = 3; i < SLOT_COUNT; ++i)	556	for (i = 3; i < SLOT_COUNT; ++i)
533	CXINC;	557	CXINC;
534
535	cxstack_ix -= SLOT_COUNT; /* undo allocation */
536	}	558	}
		559	cxstack_ix -= SLOT_COUNT; /* undo allocation */
537		560
538	c->mainstack = PL_mainstack;	561	c->mainstack = PL_mainstack;
539		562
540	{	563	{
541	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	564	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
591		614
592	New(54,PL_savestack,24,ANY);	615	New(54,PL_savestack,24,ANY);
593	PL_savestack_ix = 0;	616	PL_savestack_ix = 0;
594	PL_savestack_max = 24;	617	PL_savestack_max = 24;
595		618
596	#if !PERL_VERSION_ATLEAST (5,9,0)	619	#if !PERL_VERSION_ATLEAST (5,10,0)
597	New(54,PL_retstack,4,OP*);	620	New(54,PL_retstack,4,OP*);
598	PL_retstack_ix = 0;	621	PL_retstack_ix = 0;
599	PL_retstack_max = 4;	622	PL_retstack_max = 4;
600	#endif	623	#endif
601	}	624	}
…		…
624		647
625	Safefree (PL_tmps_stack);	648	Safefree (PL_tmps_stack);
626	Safefree (PL_markstack);	649	Safefree (PL_markstack);
627	Safefree (PL_scopestack);	650	Safefree (PL_scopestack);
628	Safefree (PL_savestack);	651	Safefree (PL_savestack);
629	#if !PERL_VERSION_ATLEAST (5,9,0)	652	#if !PERL_VERSION_ATLEAST (5,10,0)
630	Safefree (PL_retstack);	653	Safefree (PL_retstack);
631	#endif	654	#endif
632	}	655	}
633		656
634	static size_t	657	static size_t
…		…
650	#undef VAR	673	#undef VAR
651	}	674	}
652	else	675	else
653	slot = coro->slot;	676	slot = coro->slot;
654		677
		678	if (slot)
		679	{
655	rss += sizeof (slot->curstackinfo);	680	rss += sizeof (slot->curstackinfo);
656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	681	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	682	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658	rss += slot->tmps_max * sizeof (SV *);	683	rss += slot->tmps_max * sizeof (SV *);
659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	684	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660	rss += slot->scopestack_max * sizeof (I32);	685	rss += slot->scopestack_max * sizeof (I32);
661	rss += slot->savestack_max * sizeof (ANY);	686	rss += slot->savestack_max * sizeof (ANY);
662		687
663	#if !PERL_VERSION_ATLEAST (5,9,0)	688	#if !PERL_VERSION_ATLEAST (5,10,0)
664	rss += slot->retstack_max * sizeof (OP *);	689	rss += slot->retstack_max * sizeof (OP *);
665	#endif	690	#endif
		691	}
666	}	692	}
667		693
668	return rss;	694	return rss;
669	}	695	}
670		696
671	/** coroutine stack handling ************************************************/	697	/** coroutine stack handling ************************************************/
		698
		699	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		700	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		701	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		702
		703	/* apparently < 5.8.8 */
		704	#ifndef MgPV_nolen_const
		705	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		706	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		707	(const char*)(mg)->mg_ptr)
		708	#endif
		709
		710	/*
		711	* This overrides the default magic get method of %SIG elements.
		712	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		713	* and instead of tryign to save and restore the hash elements, we just provide
		714	* readback here.
		715	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		716	* not expecting this to actually change the hook. This is a potential problem
		717	* when a schedule happens then, but we ignore this.
		718	*/
		719	static int
		720	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		721	{
		722	const char *s = MgPV_nolen_const (mg);
		723
		724	if (*s == '_')
		725	{
		726	SV **svp = 0;
		727
		728	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		729	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		730
		731	if (svp)
		732	{
		733	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		734	return 0;
		735	}
		736	}
		737
		738	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		739	}
		740
		741	static int
		742	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		743	{
		744	const char *s = MgPV_nolen_const (mg);
		745
		746	if (*s == '_')
		747	{
		748	SV **svp = 0;
		749
		750	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		751	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		752
		753	if (svp)
		754	{
		755	SV *old = *svp;
		756	*svp = 0;
		757	SvREFCNT_dec (old);
		758	return 0;
		759	}
		760	}
		761
		762	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		763	}
		764
		765	static int
		766	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	const char *s = MgPV_nolen_const (mg);
		769
		770	if (*s == '_')
		771	{
		772	SV **svp = 0;
		773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	SV *old = *svp;
		780	*svp = newSVsv (sv);
		781	SvREFCNT_dec (old);
		782	return 0;
		783	}
		784	}
		785
		786	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		787	}
672		788
673	static void	789	static void
674	coro_setup (pTHX_ struct coro *coro)	790	coro_setup (pTHX_ struct coro *coro)
675	{	791	{
676	/*	792	/*
…		…
685	PL_curpm = 0;	801	PL_curpm = 0;
686	PL_curpad = 0;	802	PL_curpad = 0;
687	PL_localizing = 0;	803	PL_localizing = 0;
688	PL_dirty = 0;	804	PL_dirty = 0;
689	PL_restartop = 0;	805	PL_restartop = 0;
690	SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	806	#if PERL_VERSION_ATLEAST (5,10,0)
691	SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	807	PL_parser = 0;
		808	#endif
		809
		810	/* recreate the die/warn hooks */
		811	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		812	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
692		813
693	GvSV (PL_defgv) = newSV (0);	814	GvSV (PL_defgv) = newSV (0);
694	GvAV (PL_defgv) = coro->args; coro->args = 0;	815	GvAV (PL_defgv) = coro->args; coro->args = 0;
695	GvSV (PL_errgv) = newSV (0);	816	GvSV (PL_errgv) = newSV (0);
696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	817	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697	PL_rs = newSVsv (GvSV (irsgv));	818	PL_rs = newSVsv (GvSV (irsgv));
698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	819	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
699		820
700	{	821	{
701	dSP;	822	dSP;
702	LOGOP myop;	823	LOGOP myop;
703		824
…		…
711	PL_op = (OP *)&myop;	832	PL_op = (OP *)&myop;
712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	833	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
713	SPAGAIN;	834	SPAGAIN;
714	}	835	}
715		836
716	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	837	/* this newly created coroutine might be run on an existing cctx which most
		838	* likely was suspended in set_stacklevel, called from entersub.
		839	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		840	* so we ENTER here for symmetry
		841	*/
		842	ENTER;
717	}	843	}
718		844
719	static void	845	static void
720	coro_destroy (pTHX_ struct coro *coro)	846	coro_destroy (pTHX_ struct coro *coro)
721	{	847	{
…		…
794	: cx->blk_gimme == G_SCALAR ? bot + 1	920	: cx->blk_gimme == G_SCALAR ? bot + 1
795	: bot;	921	: bot;
796		922
797	av_extend (av, top - bot);	923	av_extend (av, top - bot);
798	while (bot < top)	924	while (bot < top)
799	av_push (av, SvREFCNT_inc (*bot++));	925	av_push (av, SvREFCNT_inc_NN (*bot++));
800		926
801	PL_runops = RUNOPS_DEFAULT;	927	PL_runops = RUNOPS_DEFAULT;
802	ENTER;	928	ENTER;
803	SAVETMPS;	929	SAVETMPS;
804	EXTEND (SP, 3);	930	EXTEND (SP, 3);
805	PUSHMARK (SP);	931	PUSHMARK (SP);
806	PUSHs (&PL_sv_no);	932	PUSHs (&PL_sv_no);
807	PUSHs (fullname);	933	PUSHs (fullname);
808	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	934	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809	PUTBACK;	935	PUTBACK;
810	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	936	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
811	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	937	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
812	SPAGAIN;	938	SPAGAIN;
813	FREETMPS;	939	FREETMPS;
814	LEAVE;	940	LEAVE;
815	PL_runops = runops_trace;	941	PL_runops = runops_trace;
…		…
842	SAVETMPS;	968	SAVETMPS;
843	EXTEND (SP, 3);	969	EXTEND (SP, 3);
844	PUSHMARK (SP);	970	PUSHMARK (SP);
845	PUSHs (&PL_sv_yes);	971	PUSHs (&PL_sv_yes);
846	PUSHs (fullname);	972	PUSHs (fullname);
847	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	973	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
848	PUTBACK;	974	PUTBACK;
849	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	975	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
850	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	976	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
851	SPAGAIN;	977	SPAGAIN;
852	FREETMPS;	978	FREETMPS;
853	LEAVE;	979	LEAVE;
854	PL_runops = runops_trace;	980	PL_runops = runops_trace;
…		…
868	PL_runops = RUNOPS_DEFAULT;	994	PL_runops = RUNOPS_DEFAULT;
869	PUSHMARK (SP);	995	PUSHMARK (SP);
870	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	996	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
871	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	997	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
872	PUTBACK;	998	PUTBACK;
873	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	999	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
874	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1000	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
875	SPAGAIN;	1001	SPAGAIN;
876	FREETMPS;	1002	FREETMPS;
877	LEAVE;	1003	LEAVE;
878	PL_runops = runops_trace;	1004	PL_runops = runops_trace;
…		…
888		1014
889	/* inject a fake call to Coro::State::_cctx_init into the execution */	1015	/* inject a fake call to Coro::State::_cctx_init into the execution */
890	/* _cctx_init should be careful, as it could be called at almost any time */	1016	/* _cctx_init should be careful, as it could be called at almost any time */
891	/* during execution of a perl program */	1017	/* during execution of a perl program */
892	static void NOINLINE	1018	static void NOINLINE
893	prepare_cctx (pTHX_ coro_cctx *cctx)	1019	cctx_prepare (pTHX_ coro_cctx *cctx)
894	{	1020	{
895	dSP;	1021	dSP;
896	LOGOP myop;	1022	LOGOP myop;
897		1023
898	PL_top_env = &PL_start_env;	1024	PL_top_env = &PL_start_env;
…		…
916		1042
917	/*	1043	/*
918	* this is a _very_ stripped down perl interpreter ;)	1044	* this is a _very_ stripped down perl interpreter ;)
919	*/	1045	*/
920	static void	1046	static void
921	coro_run (void *arg)	1047	cctx_run (void *arg)
922	{	1048	{
923	dTHX;	1049	dTHX;
924		1050
925	/* coro_run is the alternative tail of transfer(), so unlock here. */	1051	/* cctx_run is the alternative tail of transfer(), so unlock here. */
926	UNLOCK;	1052	UNLOCK;
927		1053
928	/* we now skip the entersub that lead to transfer() */	1054	/* we now skip the entersub that lead to transfer() */
929	PL_op = PL_op->op_next;	1055	PL_op = PL_op->op_next;
930		1056
931	/* inject a fake subroutine call to cctx_init */	1057	/* inject a fake subroutine call to cctx_init */
932	prepare_cctx (aTHX_ (coro_cctx *)arg);	1058	cctx_prepare (aTHX_ (coro_cctx *)arg);
933		1059
934	/* somebody or something will hit me for both perl_run and PL_restartop */	1060	/* somebody or something will hit me for both perl_run and PL_restartop */
935	PL_restartop = PL_op;	1061	PL_restartop = PL_op;
936	perl_run (PL_curinterp);	1062	perl_run (PL_curinterp);
937		1063
…		…
956	++cctx_count;	1082	++cctx_count;
957		1083
958	Newz (0, cctx, 1, coro_cctx);	1084	Newz (0, cctx, 1, coro_cctx);
959		1085
960	#if HAVE_MMAP	1086	#if HAVE_MMAP
961
962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1087	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963	/* mmap supposedly does allocate-on-write for us */	1088	/* mmap supposedly does allocate-on-write for us */
964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1089	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965		1090
966	if (cctx->sptr != (void *)-1)	1091	if (cctx->sptr != (void *)-1)
…		…
987	stack_start = cctx->sptr;	1112	stack_start = cctx->sptr;
988	stack_size = cctx->ssize;	1113	stack_size = cctx->ssize;
989	}	1114	}
990		1115
991	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1116	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
992	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1117	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993		1118
994	return cctx;	1119	return cctx;
995	}	1120	}
996		1121
997	static void	1122	static void
…		…
1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1194	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070		1195
1071	if (expect_false (next->flags & CF_DESTROYED))	1196	if (expect_false (next->flags & CF_DESTROYED))
1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1197	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1073		1198
1074	if (
1075	#if PERL_VERSION_ATLEAST (5,9,0)	1199	#if !PERL_VERSION_ATLEAST (5,10,0)
1076	expect_false (PL_parser)
1077	#else
1078	expect_false (PL_lex_state != LEX_NOTPARSING)	1200	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079	#endif
1080	)
1081	croak ("Coro::State::transfer called while parsing, but this is not supported");	1201	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1202	#endif
1082	}	1203	}
1083	}	1204	}
1084		1205
1085	/* always use the TRANSFER macro */	1206	/* always use the TRANSFER macro */
1086	static void NOINLINE	1207	static void NOINLINE
1087	transfer (pTHX_ struct coro *prev, struct coro *next)	1208	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088	{	1209	{
1089	dSTACKLEVEL;	1210	dSTACKLEVEL;
		1211	static volatile int has_throw;
1090		1212
1091	/* sometimes transfer is only called to set idle_sp */	1213	/* sometimes transfer is only called to set idle_sp */
1092	if (expect_false (!next))	1214	if (expect_false (!next))
1093	{	1215	{
1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1216	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
…		…
1109	prev->flags &= ~CF_RUNNING;	1231	prev->flags &= ~CF_RUNNING;
1110	next->flags |= CF_RUNNING;	1232	next->flags |= CF_RUNNING;
1111		1233
1112	LOCK;	1234	LOCK;
1113		1235
		1236	/* first get rid of the old state */
		1237	save_perl (aTHX_ prev);
		1238
1114	if (expect_false (next->flags & CF_NEW))	1239	if (expect_false (next->flags & CF_NEW))
1115	{	1240	{
1116	/* need to start coroutine */	1241	/* need to start coroutine */
1117	next->flags &= ~CF_NEW;	1242	next->flags &= ~CF_NEW;
1118	/* first get rid of the old state */
1119	save_perl (aTHX_ prev);
1120	/* setup coroutine call */	1243	/* setup coroutine call */
1121	coro_setup (aTHX_ next);	1244	coro_setup (aTHX_ next);
1122	}	1245	}
1123	else	1246	else
1124	{
1125	/* coroutine already started */
1126	save_perl (aTHX_ prev);
1127	load_perl (aTHX_ next);	1247	load_perl (aTHX_ next);
1128	}
1129		1248
1130	prev__cctx = prev->cctx;	1249	prev__cctx = prev->cctx;
1131		1250
1132	/* possibly "free" the cctx */	1251	/* possibly "free" the cctx */
1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1252	if (expect_true (
		1253	prev__cctx->idle_sp == STACKLEVEL
		1254	&& !(prev__cctx->flags & CC_TRACE)
		1255	&& !force_cctx
		1256	))
1134	{	1257	{
1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1258	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1259	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1137		1260
1138	prev->cctx = 0;	1261	prev->cctx = 0;
1139		1262
1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1263	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1264	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1265	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1266	if (!next->cctx)
1143	next->cctx = cctx_get (aTHX);	1267	next->cctx = cctx_get (aTHX);
1144		1268
1145	cctx_put (prev__cctx);	1269	cctx_put (prev__cctx);
1146	}	1270	}
1147		1271
1148	++next->usecount;	1272	++next->usecount;
1149		1273
1150	if (expect_true (!next->cctx))	1274	if (expect_true (!next->cctx))
1151	next->cctx = cctx_get (aTHX);	1275	next->cctx = cctx_get (aTHX);
		1276
		1277	has_throw = !!next->throw;
1152		1278
1153	if (expect_false (prev__cctx != next->cctx))	1279	if (expect_false (prev__cctx != next->cctx))
1154	{	1280	{
1155	prev__cctx->top_env = PL_top_env;	1281	prev__cctx->top_env = PL_top_env;
1156	PL_top_env = next->cctx->top_env;	1282	PL_top_env = next->cctx->top_env;
…		…
1158	}	1284	}
1159		1285
1160	free_coro_mortal (aTHX);	1286	free_coro_mortal (aTHX);
1161	UNLOCK;	1287	UNLOCK;
1162		1288
1163	if (expect_false (prev->throw || next->throw))	1289	if (expect_false (has_throw))
1164	{	1290	{
1165	struct coro *coro = SvSTATE (coro_current);	1291	struct coro *coro = SvSTATE (coro_current);
1166		1292
1167	if (coro->throw)	1293	if (coro->throw)
1168	{	1294	{
…		…
1178	struct transfer_args	1304	struct transfer_args
1179	{	1305	{
1180	struct coro *prev, *next;	1306	struct coro *prev, *next;
1181	};	1307	};
1182		1308
1183	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1309	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1184	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1310	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1185		1311
1186	/** high level stuff ********************************************************/	1312	/** high level stuff ********************************************************/
1187		1313
1188	static int	1314	static int
…		…
1282	{	1408	{
1283	dTHX;	1409	dTHX;
1284	struct transfer_args ta;	1410	struct transfer_args ta;
1285		1411
1286	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1412	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1287	TRANSFER (ta);	1413	TRANSFER (ta, 1);
1288	}	1414	}
1289		1415
1290	/** Coro ********************************************************************/	1416	/** Coro ********************************************************************/
1291		1417
1292	static void	1418	static void
…		…
1294	{	1420	{
1295	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1421	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1296	}	1422	}
1297		1423
1298	static SV *	1424	static SV *
1299	coro_deq (pTHX_ int min_prio)	1425	coro_deq (pTHX)
1300	{	1426	{
1301	int prio = PRIO_MAX - PRIO_MIN;	1427	int prio;
1302		1428
1303	min_prio -= PRIO_MIN;
1304	if (min_prio < 0)
1305	min_prio = 0;
1306
1307	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1429	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1308	if (AvFILLp (coro_ready [prio]) >= 0)	1430	if (AvFILLp (coro_ready [prio]) >= 0)
1309	return av_shift (coro_ready [prio]);	1431	return av_shift (coro_ready [prio]);
1310		1432
1311	return 0;	1433	return 0;
1312	}	1434	}
…		…
1314	static int	1436	static int
1315	api_ready (SV *coro_sv)	1437	api_ready (SV *coro_sv)
1316	{	1438	{
1317	dTHX;	1439	dTHX;
1318	struct coro *coro;	1440	struct coro *coro;
		1441	SV *sv_hook;
		1442	void (*xs_hook)(void);
1319		1443
1320	if (SvROK (coro_sv))	1444	if (SvROK (coro_sv))
1321	coro_sv = SvRV (coro_sv);	1445	coro_sv = SvRV (coro_sv);
1322		1446
1323	coro = SvSTATE (coro_sv);	1447	coro = SvSTATE (coro_sv);
…		…
1326	return 0;	1450	return 0;
1327		1451
1328	coro->flags |= CF_READY;	1452	coro->flags |= CF_READY;
1329		1453
1330	LOCK;	1454	LOCK;
		1455
		1456	sv_hook = coro_nready ? 0 : coro_readyhook;
		1457	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1458
1331	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1459	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1332	++coro_nready;	1460	++coro_nready;
		1461
1333	UNLOCK;	1462	UNLOCK;
		1463
		1464	if (sv_hook)
		1465	{
		1466	dSP;
		1467
		1468	ENTER;
		1469	SAVETMPS;
		1470
		1471	PUSHMARK (SP);
		1472	PUTBACK;
		1473	call_sv (sv_hook, G_DISCARD);
		1474	SPAGAIN;
		1475
		1476	FREETMPS;
		1477	LEAVE;
		1478	}
		1479
		1480	if (xs_hook)
		1481	xs_hook ();
1334		1482
1335	return 1;	1483	return 1;
1336	}	1484	}
1337		1485
1338	static int	1486	static int
…		…
1348	SV *prev_sv, *next_sv;	1496	SV *prev_sv, *next_sv;
1349		1497
1350	for (;;)	1498	for (;;)
1351	{	1499	{
1352	LOCK;	1500	LOCK;
1353	next_sv = coro_deq (aTHX_ PRIO_MIN);	1501	next_sv = coro_deq (aTHX);
1354		1502
1355	/* nothing to schedule: call the idle handler */	1503	/* nothing to schedule: call the idle handler */
1356	if (expect_false (!next_sv))	1504	if (expect_false (!next_sv))
1357	{	1505	{
1358	dSP;	1506	dSP;
…		…
1362	SAVETMPS;	1510	SAVETMPS;
1363		1511
1364	PUSHMARK (SP);	1512	PUSHMARK (SP);
1365	PUTBACK;	1513	PUTBACK;
1366	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1514	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1515	SPAGAIN;
1367		1516
1368	FREETMPS;	1517	FREETMPS;
1369	LEAVE;	1518	LEAVE;
1370	continue;	1519	continue;
1371	}	1520	}
…		…
1426	{	1575	{
1427	dTHX;	1576	dTHX;
1428	struct transfer_args ta;	1577	struct transfer_args ta;
1429		1578
1430	prepare_schedule (aTHX_ &ta);	1579	prepare_schedule (aTHX_ &ta);
1431	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1432	}	1581	}
1433		1582
1434	static int	1583	static int
1435	api_cede (void)	1584	api_cede (void)
1436	{	1585	{
…		…
1439		1588
1440	prepare_cede (aTHX_ &ta);	1589	prepare_cede (aTHX_ &ta);
1441		1590
1442	if (expect_true (ta.prev != ta.next))	1591	if (expect_true (ta.prev != ta.next))
1443	{	1592	{
1444	TRANSFER (ta);	1593	TRANSFER (ta, 1);
1445	return 1;	1594	return 1;
1446	}	1595	}
1447	else	1596	else
1448	return 0;	1597	return 0;
1449	}	1598	}
…		…
1454	dTHX;	1603	dTHX;
1455	struct transfer_args ta;	1604	struct transfer_args ta;
1456		1605
1457	if (prepare_cede_notself (aTHX_ &ta))	1606	if (prepare_cede_notself (aTHX_ &ta))
1458	{	1607	{
1459	TRANSFER (ta);	1608	TRANSFER (ta, 1);
1460	return 1;	1609	return 1;
1461	}	1610	}
1462	else	1611	else
1463	return 0;	1612	return 0;
1464	}	1613	}
…		…
1487	else	1636	else
1488	coro->slot->runops = RUNOPS_DEFAULT;	1637	coro->slot->runops = RUNOPS_DEFAULT;
1489	}	1638	}
1490	}	1639	}
1491		1640
		1641	static int
		1642	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1643	{
		1644	AV *padlist;
		1645	AV *av = (AV *)mg->mg_obj;
		1646
		1647	abort ();
		1648
		1649	return 0;
		1650	}
		1651
		1652	static MGVTBL coro_gensub_vtbl = {
		1653	0, 0, 0, 0,
		1654	coro_gensub_free
		1655	};
		1656
		1657	/*****************************************************************************/
		1658	/* PerlIO::cede */
		1659
		1660	typedef struct
		1661	{
		1662	PerlIOBuf base;
		1663	NV next, every;
		1664	} PerlIOCede;
		1665
		1666	static IV
		1667	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1668	{
		1669	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1670
		1671	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1672	self->next = nvtime () + self->every;
		1673
		1674	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1675	}
		1676
		1677	static SV *
		1678	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1679	{
		1680	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1681
		1682	return newSVnv (self->every);
		1683	}
		1684
		1685	static IV
		1686	PerlIOCede_flush (pTHX_ PerlIO *f)
		1687	{
		1688	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1689	double now = nvtime ();
		1690
		1691	if (now >= self->next)
		1692	{
		1693	api_cede ();
		1694	self->next = now + self->every;
		1695	}
		1696
		1697	return PerlIOBuf_flush (aTHX_ f);
		1698	}
		1699
		1700	static PerlIO_funcs PerlIO_cede =
		1701	{
		1702	sizeof(PerlIO_funcs),
		1703	"cede",
		1704	sizeof(PerlIOCede),
		1705	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1706	PerlIOCede_pushed,
		1707	PerlIOBuf_popped,
		1708	PerlIOBuf_open,
		1709	PerlIOBase_binmode,
		1710	PerlIOCede_getarg,
		1711	PerlIOBase_fileno,
		1712	PerlIOBuf_dup,
		1713	PerlIOBuf_read,
		1714	PerlIOBuf_unread,
		1715	PerlIOBuf_write,
		1716	PerlIOBuf_seek,
		1717	PerlIOBuf_tell,
		1718	PerlIOBuf_close,
		1719	PerlIOCede_flush,
		1720	PerlIOBuf_fill,
		1721	PerlIOBase_eof,
		1722	PerlIOBase_error,
		1723	PerlIOBase_clearerr,
		1724	PerlIOBase_setlinebuf,
		1725	PerlIOBuf_get_base,
		1726	PerlIOBuf_bufsiz,
		1727	PerlIOBuf_get_ptr,
		1728	PerlIOBuf_get_cnt,
		1729	PerlIOBuf_set_ptrcnt,
		1730	};
		1731
		1732
1492	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1733	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1493		1734
1494	PROTOTYPES: DISABLE	1735	PROTOTYPES: DISABLE
1495		1736
1496	BOOT:	1737	BOOT:
…		…
1501	BOOT_PAGESIZE;	1742	BOOT_PAGESIZE;
1502		1743
1503	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1744	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1504	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1745	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1505		1746
		1747	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1748	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1749	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1750
1506	hv_sig = coro_get_hv ("SIG", TRUE);	1751	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1507	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1752	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1508	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1753	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1509
1510	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1511	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1512		1754
1513	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1755	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1514		1756
1515	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1757	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1516	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1758	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1521	main_top_env = PL_top_env;	1763	main_top_env = PL_top_env;
1522		1764
1523	while (main_top_env->je_prev)	1765	while (main_top_env->je_prev)
1524	main_top_env = main_top_env->je_prev;	1766	main_top_env = main_top_env->je_prev;
1525		1767
1526	coroapi.ver = CORO_API_VERSION;	1768	coroapi.ver = CORO_API_VERSION;
		1769	coroapi.rev = CORO_API_REVISION;
1527	coroapi.transfer = api_transfer;	1770	coroapi.transfer = api_transfer;
		1771
		1772	{
		1773	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1774
		1775	if (!svp) croak ("Time::HiRes is required");
		1776	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1777
		1778	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1779	}
1528		1780
1529	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1781	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1530	}	1782	}
1531		1783
1532	SV *	1784	SV *
1533	new (char *klass, ...)	1785	new (char *klass, ...)
1534	CODE:	1786	CODE:
1535	{	1787	{
1536	struct coro *coro;	1788	struct coro *coro;
		1789	MAGIC *mg;
1537	HV *hv;	1790	HV *hv;
1538	int i;	1791	int i;
1539		1792
1540	Newz (0, coro, 1, struct coro);	1793	Newz (0, coro, 1, struct coro);
1541	coro->args = newAV ();	1794	coro->args = newAV ();
…		…
1544	if (coro_first) coro_first->prev = coro;	1797	if (coro_first) coro_first->prev = coro;
1545	coro->next = coro_first;	1798	coro->next = coro_first;
1546	coro_first = coro;	1799	coro_first = coro;
1547		1800
1548	coro->hv = hv = newHV ();	1801	coro->hv = hv = newHV ();
1549	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1802	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1803	mg->mg_flags |= MGf_DUP;
1550	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1804	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1551		1805
1552	av_extend (coro->args, items - 1);	1806	av_extend (coro->args, items - 1);
1553	for (i = 1; i < items; i++)	1807	for (i = 1; i < items; i++)
1554	av_push (coro->args, newSVsv (ST (i)));	1808	av_push (coro->args, newSVsv (ST (i)));
…		…
1568	Coro::cede_notself = 4	1822	Coro::cede_notself = 4
1569	CODE:	1823	CODE:
1570	{	1824	{
1571	struct transfer_args ta;	1825	struct transfer_args ta;
1572		1826
		1827	PUTBACK;
1573	switch (ix)	1828	switch (ix)
1574	{	1829	{
1575	case 0:	1830	case 0:
1576	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1831	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1577	ta.next = 0;	1832	ta.next = 0;
…		…
1596	if (!prepare_cede_notself (aTHX_ &ta))	1851	if (!prepare_cede_notself (aTHX_ &ta))
1597	XSRETURN_EMPTY;	1852	XSRETURN_EMPTY;
1598		1853
1599	break;	1854	break;
1600	}	1855	}
		1856	SPAGAIN;
1601		1857
1602	BARRIER;	1858	BARRIER;
		1859	PUTBACK;
1603	TRANSFER (ta);	1860	TRANSFER (ta, 0);
1604		1861	SPAGAIN; /* might be the sp of a different coroutine now */
1605	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1862	/* be extra careful not to ever do anything after TRANSFER */
1606	XSRETURN_YES;
1607	}	1863	}
1608		1864
1609	bool	1865	bool
1610	_destroy (SV *coro_sv)	1866	_destroy (SV *coro_sv)
1611	CODE:	1867	CODE:
1612	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1868	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1613	OUTPUT:	1869	OUTPUT:
1614	RETVAL	1870	RETVAL
1615		1871
1616	void	1872	void
1617	_exit (code)	1873	_exit (int code)
1618	int code
1619	PROTOTYPE: $	1874	PROTOTYPE: $
1620	CODE:	1875	CODE:
1621	_exit (code);	1876	_exit (code);
1622		1877
1623	int	1878	int
…		…
1657	call (Coro::State coro, SV *coderef)	1912	call (Coro::State coro, SV *coderef)
1658	ALIAS:	1913	ALIAS:
1659	eval = 1	1914	eval = 1
1660	CODE:	1915	CODE:
1661	{	1916	{
1662	if (coro->mainstack)	1917	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1663	{	1918	{
1664	struct coro temp;	1919	struct coro temp;
1665		1920
1666	if (!(coro->flags & CF_RUNNING))	1921	if (!(coro->flags & CF_RUNNING))
1667	{	1922	{
		1923	PUTBACK;
1668	save_perl (aTHX_ &temp);	1924	save_perl (aTHX_ &temp);
1669	load_perl (aTHX_ coro);	1925	load_perl (aTHX_ coro);
1670	}	1926	}
1671		1927
1672	{	1928	{
1673	dSP;	1929	dSP;
1674	ENTER;	1930	ENTER;
1675	SAVETMPS;	1931	SAVETMPS;
		1932	PUTBACK;
		1933	PUSHSTACK;
1676	PUSHMARK (SP);	1934	PUSHMARK (SP);
1677	PUTBACK;
1678		1935
1679	if (ix)	1936	if (ix)
1680	eval_sv (coderef, 0);	1937	eval_sv (coderef, 0);
1681	else	1938	else
1682	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1939	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1683		1940
		1941	POPSTACK;
1684	SPAGAIN;	1942	SPAGAIN;
1685	FREETMPS;	1943	FREETMPS;
1686	LEAVE;	1944	LEAVE;
1687	PUTBACK;	1945	PUTBACK;
1688	}	1946	}
1689		1947
1690	if (!(coro->flags & CF_RUNNING))	1948	if (!(coro->flags & CF_RUNNING))
1691	{	1949	{
1692	save_perl (aTHX_ coro);	1950	save_perl (aTHX_ coro);
1693	load_perl (aTHX_ &temp);	1951	load_perl (aTHX_ &temp);
		1952	SPAGAIN;
1694	}	1953	}
1695	}	1954	}
1696	}	1955	}
1697		1956
1698	SV *	1957	SV *
…		…
1710		1969
1711	void	1970	void
1712	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1971	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1713		1972
1714	SV *	1973	SV *
1715	has_stack (Coro::State coro)	1974	has_cctx (Coro::State coro)
1716	PROTOTYPE: $	1975	PROTOTYPE: $
1717	CODE:	1976	CODE:
1718	RETVAL = boolSV (!!coro->cctx);	1977	RETVAL = boolSV (!!coro->cctx);
1719	OUTPUT:	1978	OUTPUT:
1720	RETVAL	1979	RETVAL
…		…
1739	case 1: RETVAL = coro->usecount; break;	1998	case 1: RETVAL = coro->usecount; break;
1740	}	1999	}
1741	OUTPUT:	2000	OUTPUT:
1742	RETVAL	2001	RETVAL
1743		2002
		2003	void
		2004	force_cctx ()
		2005	CODE:
		2006	struct coro *coro = SvSTATE (coro_current);
		2007	coro->cctx->idle_sp = 0;
		2008
		2009	void
		2010	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2011	PROTOTYPE: $;$
		2012	CODE:
		2013	SvREFCNT_dec (self->throw);
		2014	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2015
		2016	void
		2017	swap_defsv (Coro::State self)
		2018	PROTOTYPE: $
		2019	ALIAS:
		2020	swap_defav = 1
		2021	CODE:
		2022	if (!self->slot)
		2023	croak ("cannot swap state with coroutine that has no saved state");
		2024	else
		2025	{
		2026	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2027	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2028
		2029	SV *tmp = *src; *src = *dst; *dst = tmp;
		2030	}
1744		2031
1745	MODULE = Coro::State PACKAGE = Coro	2032	MODULE = Coro::State PACKAGE = Coro
1746		2033
1747	BOOT:	2034	BOOT:
1748	{	2035	{
1749	int i;	2036	int i;
1750		2037
1751	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1752	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1753	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2038	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2039	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2040	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1754		2041
1755	coro_current = coro_get_sv ("Coro::current", FALSE);	2042	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1756	SvREADONLY_on (coro_current);	2043	SvREADONLY_on (coro_current);
1757		2044
1758	coro_stash = gv_stashpv ("Coro", TRUE);	2045	coro_stash = gv_stashpv ("Coro", TRUE);
1759		2046
1760	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2047	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1788	void	2075	void
1789	_set_current (SV *current)	2076	_set_current (SV *current)
1790	PROTOTYPE: $	2077	PROTOTYPE: $
1791	CODE:	2078	CODE:
1792	SvREFCNT_dec (SvRV (coro_current));	2079	SvREFCNT_dec (SvRV (coro_current));
1793	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2080	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2081
		2082	void
		2083	_set_readyhook (SV *hook)
		2084	PROTOTYPE: $
		2085	CODE:
		2086	LOCK;
		2087	SvREFCNT_dec (coro_readyhook);
		2088	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2089	UNLOCK;
1794		2090
1795	int	2091	int
1796	prio (Coro::State coro, int newprio = 0)	2092	prio (Coro::State coro, int newprio = 0)
1797	ALIAS:	2093	ALIAS:
1798	nice = 1	2094	nice = 1
…		…
1828	CODE:	2124	CODE:
1829	RETVAL = coro_nready;	2125	RETVAL = coro_nready;
1830	OUTPUT:	2126	OUTPUT:
1831	RETVAL	2127	RETVAL
1832		2128
1833	void
1834	throw (Coro::State self, SV *throw = &PL_sv_undef)
1835	PROTOTYPE: $;$
1836	CODE:
1837	SvREFCNT_dec (self->throw);
1838	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1839
1840	# for async_pool speedup	2129	# for async_pool speedup
1841	void	2130	void
1842	_pool_1 (SV *cb)	2131	_pool_1 (SV *cb)
1843	CODE:	2132	CODE:
1844	{	2133	{
1845	struct coro *coro = SvSTATE (coro_current);	2134	struct coro *coro = SvSTATE (coro_current);
1846	HV *hv = (HV *)SvRV (coro_current);	2135	HV *hv = (HV *)SvRV (coro_current);
1847	AV *defav = GvAV (PL_defgv);	2136	AV *defav = GvAV (PL_defgv);
1848	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2137	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1849	AV *invoke_av;	2138	AV *invoke_av;
1850	int i, len;	2139	int i, len;
1851		2140
1852	if (!invoke)	2141	if (!invoke)
		2142	{
		2143	SV *old = PL_diehook;
		2144	PL_diehook = 0;
		2145	SvREFCNT_dec (old);
1853	croak ("\3async_pool terminate\2\n");	2146	croak ("\3async_pool terminate\2\n");
		2147	}
1854		2148
1855	SvREFCNT_dec (coro->saved_deffh);	2149	SvREFCNT_dec (coro->saved_deffh);
1856	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2150	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857		2151
1858	hv_store (hv, "desc", sizeof ("desc") - 1,	2152	hv_store (hv, "desc", sizeof ("desc") - 1,
1859	newSVpvn (strpair ("[async_pool]")), 0);	2153	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1860		2154
1861	invoke_av = (AV *)SvRV (invoke);	2155	invoke_av = (AV *)SvRV (invoke);
1862	len = av_len (invoke_av);	2156	len = av_len (invoke_av);
1863		2157
1864	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2158	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1865		2159
1866	if (len > 0)	2160	if (len > 0)
1867	{	2161	{
1868	av_fill (defav, len - 1);	2162	av_fill (defav, len - 1);
1869	for (i = 0; i < len; ++i)	2163	for (i = 0; i < len; ++i)
1870	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2164	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1871	}	2165	}
1872		2166
1873	SvREFCNT_dec (invoke);	2167	SvREFCNT_dec (invoke);
1874	}	2168	}
1875		2169
…		…
1884	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2178	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1885	coro->saved_deffh = 0;	2179	coro->saved_deffh = 0;
1886		2180
1887	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2181	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1888	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2182	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2183	{
		2184	SV *old = PL_diehook;
		2185	PL_diehook = 0;
		2186	SvREFCNT_dec (old);
1889	croak ("\3async_pool terminate\2\n");	2187	croak ("\3async_pool terminate\2\n");
		2188	}
1890		2189
1891	av_clear (GvAV (PL_defgv));	2190	av_clear (GvAV (PL_defgv));
1892	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2191	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1893	newSVpvn (strpair ("[async_pool idle]")), 0);	2192	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1894		2193
1895	coro->prio = 0;	2194	coro->prio = 0;
1896		2195
1897	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2196	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898	api_trace (coro_current, 0);	2197	api_trace (coro_current, 0);
1899		2198
1900	av_push (av_async_pool, newSVsv (coro_current));	2199	av_push (av_async_pool, newSVsv (coro_current));
1901	}	2200	}
1902		2201
		2202	#if 0
		2203
		2204	void
		2205	_generator_call (...)
		2206	PROTOTYPE: @
		2207	PPCODE:
		2208	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2209	xxxx
		2210	abort ();
		2211
		2212	SV *
		2213	gensub (SV *sub, ...)
		2214	PROTOTYPE: &;@
		2215	CODE:
		2216	{
		2217	struct coro *coro;
		2218	MAGIC *mg;
		2219	CV *xcv;
		2220	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2221	int i;
		2222
		2223	CvGV (ncv) = CvGV (cv);
		2224	CvFILE (ncv) = CvFILE (cv);
		2225
		2226	Newz (0, coro, 1, struct coro);
		2227	coro->args = newAV ();
		2228	coro->flags = CF_NEW;
		2229
		2230	av_extend (coro->args, items - 1);
		2231	for (i = 1; i < items; i++)
		2232	av_push (coro->args, newSVsv (ST (i)));
		2233
		2234	CvISXSUB_on (ncv);
		2235	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2236
		2237	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2238
		2239	CvXSUB (ncv) = CvXSUB (xcv);
		2240	CvANON_on (ncv);
		2241
		2242	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2243	RETVAL = newRV_noinc ((SV *)ncv);
		2244	}
		2245	OUTPUT:
		2246	RETVAL
		2247
		2248	#endif
		2249
1903		2250
1904	MODULE = Coro::State PACKAGE = Coro::AIO	2251	MODULE = Coro::State PACKAGE = Coro::AIO
1905		2252
1906	SV *	2253	void
1907	_get_state ()	2254	_get_state (SV *self)
1908	CODE:	2255	PPCODE:
1909	{	2256	{
1910	struct io_state *data;	2257	AV *defav = GvAV (PL_defgv);
1911		2258	AV *av = newAV ();
		2259	int i;
1912	RETVAL = newSV (sizeof (struct io_state));	2260	SV *data_sv = newSV (sizeof (struct io_state));
1913	data = (struct io_state *)SvPVX (RETVAL);	2261	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1914	SvCUR_set (RETVAL, sizeof (struct io_state));	2262	SvCUR_set (data_sv, sizeof (struct io_state));
1915	SvPOK_only (RETVAL);	2263	SvPOK_only (data_sv);
1916		2264
1917	data->errorno = errno;	2265	data->errorno = errno;
1918	data->laststype = PL_laststype;	2266	data->laststype = PL_laststype;
1919	data->laststatval = PL_laststatval;	2267	data->laststatval = PL_laststatval;
1920	data->statcache = PL_statcache;	2268	data->statcache = PL_statcache;
		2269
		2270	av_extend (av, AvFILLp (defav) + 1 + 1);
		2271
		2272	for (i = 0; i <= AvFILLp (defav); ++i)
		2273	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2274
		2275	av_push (av, data_sv);
		2276
		2277	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2278
		2279	api_ready (self);
1921	}	2280	}
1922	OUTPUT:
1923	RETVAL
1924		2281
1925	void	2282	void
1926	_set_state (char *data_)	2283	_set_state (SV *state)
1927	PROTOTYPE: $	2284	PROTOTYPE: $
1928	CODE:	2285	PPCODE:
1929	{	2286	{
1930	struct io_state *data = (void *)data_;	2287	AV *av = (AV *)SvRV (state);
		2288	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2289	int i;
1931		2290
1932	errno = data->errorno;	2291	errno = data->errorno;
1933	PL_laststype = data->laststype;	2292	PL_laststype = data->laststype;
1934	PL_laststatval = data->laststatval;	2293	PL_laststatval = data->laststatval;
1935	PL_statcache = data->statcache;	2294	PL_statcache = data->statcache;
1936	}
1937		2295
		2296	EXTEND (SP, AvFILLp (av));
		2297	for (i = 0; i < AvFILLp (av); ++i)
		2298	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2299	}
		2300
		2301
		2302	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2303
		2304	BOOT:
		2305	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2306
		2307	SV *
		2308	_schedule (...)
		2309	PROTOTYPE: @
		2310	CODE:
		2311	{
		2312	static int incede;
		2313
		2314	api_cede_notself ();
		2315
		2316	++incede;
		2317	while (coro_nready >= incede && api_cede ())
		2318	;
		2319
		2320	sv_setsv (sv_activity, &PL_sv_undef);
		2321	if (coro_nready >= incede)
		2322	{
		2323	PUSHMARK (SP);
		2324	PUTBACK;
		2325	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2326	SPAGAIN;
		2327	}
		2328
		2329	--incede;
		2330	}
		2331
		2332
		2333	MODULE = Coro::State PACKAGE = PerlIO::cede
		2334
		2335	BOOT:
		2336	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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