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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
…		…
86	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
87	#ifndef CORO_PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define CORO_PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	91	#endif
90		92
91	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
92	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
96		97
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		99
99	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
…		…
124	I32 laststype;	125	I32 laststype;
125	int laststatval;	126	int laststatval;
126	Stat_t statcache;	127	Stat_t statcache;
127	};	128	};
128		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
133		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
134	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		152	};
136		153
137	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	155	typedef struct coro_cctx {
139	struct coro_cctx *next;	156	struct coro_cctx *next;
140		157
141	/* the stack */	158	/* the stack */
142	void *sptr;	159	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
144		161
145	/* cpu state */	162	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	163	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	164	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	165	JMPENV *top_env;
149	coro_context cctx;	166	coro_context cctx;
150		167
151	int inuse;
152
153	#if CORO_USE_VALGRIND	168	#if CORO_USE_VALGRIND
154	int valgrind_id;	169	int valgrind_id;
155	#endif	170	#endif
		171	unsigned char flags;
156	} coro_cctx;	172	} coro_cctx;
157		173
158	enum {	174	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
…		…
175		191
176	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	193	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	194	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	195	SV *errsv; /* $@ */
		196	GV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	197	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	198	SV *irssv_sv; /* real $/ cache */
182		199
183	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
184	# include "state.h"	201	# include "state.h"
185	#undef VAR	202	#undef VAR
186		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
187	/* coro process data */	207	/* coro process data */
188	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro *next, *prev;
		212	HV *hv; /* the perl hash associated with this coro, if any */
189	};	213	};
190		214
191	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
193		217
…		…
202		226
203	/* for Coro.pm */	227	/* for Coro.pm */
204	static SV *coro_current;	228	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	230	static int coro_nready;
		231	static struct coro *coro_first;
207		232
208	/** lowlevel stuff **********************************************************/	233	/** lowlevel stuff **********************************************************/
209		234
210	static AV *	235	static AV *
211	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
212	{	237	{
213	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	239	AV *newpadlist, *newpad;
215		240
216	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
228		253
229	return newpadlist;	254	return newpadlist;
230	}	255	}
231		256
232	static void	257	static void
233	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
234	{	259	{
235	/* may be during global destruction */	260	/* may be during global destruction */
236	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
237	{	262	{
238	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	284	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	285	AV *av = (AV *)mg->mg_obj;
261		286
262	/* casting is fun. */	287	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
265		290
266	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
267		292
268	return 0;	293	return 0;
269	}	294	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	305	: 0
281		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
282	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
283	static void	334	static void
284	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
285	{	336	{
286	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	338	AV *av;
288		339
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
…		…
295	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
299	#else	350	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	352	#endif
302	}	353	}
303	}	354	}
304		355
305	static void	356	static void
306	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
307	{	358	{
308	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	360	AV *av;
310		361
311	if (!mg)	362	if (!mg)
…		…
330	#define SE } while (0)	381	#define SE } while (0)
331		382
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333		384
334	static void	385	static void
335	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
336	{	387	{
337	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	389	# include "state.h"
339	#undef VAR	390	#undef VAR
340		391
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
344	if (c->irssv)	397	if (c->irssv)
345	{	398	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		400	{
347	SvREFCNT_dec (c->irssv);	401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
348	else	404	else
349	{	405	{
350	REPLACE_SV (PL_rs, c->irssv);	406	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);	408	sv_setsv (c->irssv_sv, PL_rs);
…		…
358	CV *cv;	414	CV *cv;
359		415
360	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
362	{	418	{
363	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
366	}	422	}
367		423
368	PUTBACK;	424	PUTBACK;
369	}	425	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	426	}
372		427
373	static void	428	static void
374	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
375	{	430	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	431	{
378	dSP;	432	dSP;
379	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	435	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	437	/*
384	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
386	*/	440	*/
387		441
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
391	for (;;)	444	for (;;)
392	{	445	{
393	while (cxix >= 0)	446	while (cxix >= 0)
394	{	447	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
396		449
397	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	451	{
399	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
400		453
401	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
402	{	455	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
407		460
408	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
409	get_padlist (cv);	462	get_padlist (aTHX_ cv);
410	}	463	}
411	}	464	}
412	}	465	}
413		466
414	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
415	break;	468	break;
416		469
417	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
420	}	473	}
421		474
422	PUTBACK;	475	PUTBACK;
423	}	476	}
424		477
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
429		483
430	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	485	# include "state.h"
432	#undef VAR	486	#undef VAR
…		…
440	*/	494	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	495	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	496	# define coro_init_stacks init_stacks
443	#else	497	#else
444	static void	498	static void
445	coro_init_stacks ()	499	coro_init_stacks (pTHX)
446	{	500	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		505
452	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		509
456	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	513	PL_tmps_max = 64;
460		514
461	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
464		518
465	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
467	#endif	521	#endif
468		522
469	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
472		526
473	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	529	PL_savestack_max = 64;
476		530
477	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	534	PL_retstack_max = 4;
481	#endif	535	#endif
482	}	536	}
483	#endif	537	#endif
484		538
485	/*	539	/*
486	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
487	*/	541	*/
488	static void	542	static void
489	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
490	{	544	{
491	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
492	{	546	{
493	/* restore all saved variables and stuff */	547	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	582	Safefree (PL_retstack);
529	#endif	583	#endif
530	}	584	}
531		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
532	/** coroutine stack handling ************************************************/	617	/** coroutine stack handling ************************************************/
533		618
534	static void	619	static void
535	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
536	{	621	{
537	/*	622	/*
538	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
539	*/	624	*/
540
541	coro_init_stacks ();	625	coro_init_stacks (aTHX);
542		626
		627	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	630	PL_comppad = 0;
546	PL_curpm = 0;	631	PL_curpm = 0;
547	PL_localizing = 0;	632	PL_localizing = 0;
…		…
558	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	644	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
561		646
562	PUSHMARK (SP);	647	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	649	PUTBACK;
565	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	652	SPAGAIN;
568	}	653	}
569		654
570	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
571	}	656	}
572		657
573	static void	658	static void
574	free_coro_mortal ()	659	free_coro_mortal (pTHX)
575	{	660	{
576	if (coro_mortal)	661	if (coro_mortal)
577	{	662	{
578	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	664	coro_mortal = 0;
580	}	665	}
581	}	666	}
582		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (cctx->flags & CC_TRACE_ALL)
		681	{
		682	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		683	{
		684	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		685	SV **bot, **top;
		686	AV *av = newAV (); /* return values */
		687	SV **cb;
		688	dSP;
		689
		690	GV *gv = CvGV (cx->blk_sub.cv);
		691	SV *fullname = sv_2mortal (newSV (0));
		692	if (isGV (gv))
		693	gv_efullname3 (fullname, gv, 0);
		694
		695	bot = PL_stack_base + cx->blk_oldsp + 1;
		696	top = cx->blk_gimme == G_ARRAY ? SP + 1
		697	: cx->blk_gimme == G_SCALAR ? bot + 1
		698	: bot;
		699
		700	while (bot < top)
		701	av_push (av, SvREFCNT_inc (*bot++));
		702
		703	PL_runops = RUNOPS_DEFAULT;
		704	ENTER;
		705	SAVETMPS;
		706	EXTEND (SP, 3);
		707	PUSHMARK (SP);
		708	PUSHs (&PL_sv_no);
		709	PUSHs (fullname);
		710	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		711	PUTBACK;
		712	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		713	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		714	SPAGAIN;
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = runops_trace;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727
		728	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		729	{
		730	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		731
		732	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		733	{
		734	runops_proc_t old_runops = PL_runops;
		735	dSP;
		736	GV *gv = CvGV (cx->blk_sub.cv);
		737	SV *fullname = sv_2mortal (newSV (0));
		738
		739	if (isGV (gv))
		740	gv_efullname3 (fullname, gv, 0);
		741
		742	PL_runops = RUNOPS_DEFAULT;
		743	ENTER;
		744	SAVETMPS;
		745	EXTEND (SP, 3);
		746	PUSHMARK (SP);
		747	PUSHs (&PL_sv_yes);
		748	PUSHs (fullname);
		749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		750	PUTBACK;
		751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		752	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		753	SPAGAIN;
		754	FREETMPS;
		755	LEAVE;
		756	PL_runops = runops_trace;
		757	}
		758
		759	oldcxix = cxstack_ix;
		760	}
		761
		762	if (cctx->flags & CC_TRACE_LINE)
		763	{
		764	dSP;
		765
		766	PL_runops = RUNOPS_DEFAULT;
		767	ENTER;
		768	SAVETMPS;
		769	EXTEND (SP, 3);
		770	PL_runops = RUNOPS_DEFAULT;
		771	PUSHMARK (SP);
		772	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		773	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		774	PUTBACK;
		775	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		776	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		777	SPAGAIN;
		778	FREETMPS;
		779	LEAVE;
		780	PL_runops = runops_trace;
		781	}
		782	}
		783	}
		784	}
		785	}
		786
		787	TAINT_NOT;
		788	return 0;
		789	}
		790
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	791	/* inject a fake call to Coro::State::_cctx_init into the execution */
		792	/* _cctx_init should be careful, as it could be called at almost any time */
		793	/* during execution of a perl program */
584	static void NOINLINE	794	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	795	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	796	{
587	dSP;	797	dSP;
588	LOGOP myop;	798	LOGOP myop;
		799
		800	PL_top_env = &PL_start_env;
		801
		802	if (cctx->flags & CC_TRACE)
		803	PL_runops = runops_trace;
589		804
590	Zero (&myop, 1, LOGOP);	805	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	806	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	807	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		808
…		…
599	PL_op = (OP *)&myop;	814	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	815	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	816	SPAGAIN;
602	}	817	}
603		818
		819	/*
		820	* this is a _very_ stripped down perl interpreter ;)
		821	*/
604	static void	822	static void
605	coro_run (void *arg)	823	coro_run (void *arg)
606	{	824	{
		825	dTHX;
		826
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	827	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	828	UNLOCK;
609		829
610	/*	830	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	831	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		832
615	/* inject call to cctx_init */	833	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	834	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		835
618	/* somebody will hit me for both perl_run and PL_restartop */	836	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	837	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	838	perl_run (PL_curinterp);
621		839
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	840	/*
623	abort ();	841	* If perl-run returns we assume exit() was being called or the coro
		842	* fell off the end, which seems to be the only valid (non-bug)
		843	* reason for perl_run to return. We try to exit by jumping to the
		844	* bootstrap-time "top" top_env, as we cannot restore the "main"
		845	* coroutine as Coro has no such concept
		846	*/
		847	PL_top_env = main_top_env;
		848	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	849	}
625		850
626	static coro_cctx *	851	static coro_cctx *
627	cctx_new ()	852	cctx_new ()
628	{	853	{
629	coro_cctx *cctx;	854	coro_cctx *cctx;
		855	void *stack_start;
		856	size_t stack_size;
630		857
631	++cctx_count;	858	++cctx_count;
632		859
633	Newz (0, cctx, 1, coro_cctx);	860	Newz (0, cctx, 1, coro_cctx);
634		861
635	#if HAVE_MMAP	862	#if HAVE_MMAP
636		863
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	865	/* mmap supposedly does allocate-on-write for us */
639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		867
641	if (cctx->sptr != (void *)-1)	868	if (cctx->sptr != (void *)-1)
642	{	869	{
643	# if CORO_STACKGUARD	870	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	871	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	872	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	873	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	874	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	875	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	876	}
654	else	877	else
655	#endif	878	#endif
656	{	879	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	880	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	881	New (0, cctx->sptr, coro_stacksize, long);
659		882
660	if (!cctx->sptr)	883	if (!cctx->sptr)
661	{	884	{
662	perror ("FATAL: unable to allocate stack for coroutine");	885	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	886	_exit (EXIT_FAILURE);
664	}	887	}
665		888
666	REGISTER_STACK (	889	stack_start = cctx->sptr;
667	cctx,	890	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	891	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		892
		893	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		895
675	return cctx;	896	return cctx;
676	}	897	}
677		898
678	static void	899	static void
…		…
686	#if CORO_USE_VALGRIND	907	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	909	#endif
689		910
690	#if HAVE_MMAP	911	#if HAVE_MMAP
691	if (cctx->ssize > 0)	912	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	913	munmap (cctx->sptr, cctx->ssize);
693	else	914	else
694	#endif	915	#endif
695	Safefree (cctx->sptr);	916	Safefree (cctx->sptr);
696		917
697	Safefree (cctx);	918	Safefree (cctx);
698	}	919	}
699		920
700	static coro_cctx *	921	static coro_cctx *
701	cctx_get ()	922	cctx_get (pTHX)
702	{	923	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	924	while (cctx_first)
706	{	925	{
707	cctx = cctx_first;	926	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	927	cctx_first = cctx->next;
709	--cctx_idle;	928	--cctx_idle;
710	}	929
711	else	930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
712	{	931	return cctx;
713	cctx = cctx_new ();	932
714	PL_op = PL_op->op_next;	933	cctx_destroy (cctx);
715	}	934	}
716		935
717	return cctx;	936	return cctx_new ();
718	}	937	}
719		938
720	static void	939	static void
721	cctx_put (coro_cctx *cctx)	940	cctx_put (coro_cctx *cctx)
722	{	941	{
…		…
725	{	944	{
726	coro_cctx *first = cctx_first;	945	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	946	cctx_first = first->next;
728	--cctx_idle;	947	--cctx_idle;
729		948
730	assert (!first->inuse);
731	cctx_destroy (first);	949	cctx_destroy (first);
732	}	950	}
733		951
734	++cctx_idle;	952	++cctx_idle;
735	cctx->next = cctx_first;	953	cctx->next = cctx_first;
736	cctx_first = cctx;	954	cctx_first = cctx;
737	}	955	}
738		956
739	/** coroutine switching *****************************************************/	957	/** coroutine switching *****************************************************/
740		958
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	959	static void NOINLINE
		960	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		961	{
		962	if (prev != next)
		963	{
		964	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		966
		967	if (next->flags & CF_RUNNING)
		968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		969
		970	if (next->flags & CF_DESTROYED)
		971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		972
		973	if (PL_lex_state != LEX_NOTPARSING)
		974	croak ("Coro::State::transfer called while parsing, but this is not supported");
		975	}
		976	}
		977
		978	/* always use the TRANSFER macro */
		979	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	980	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	981	{
745	dSTACKLEVEL;	982	dSTACKLEVEL;
746		983
747	/* sometimes transfer is only called to set idle_sp */	984	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	985	if (!next)
…		…
756		993
757	if (prev->flags & CF_NEW)	994	if (prev->flags & CF_NEW)
758	{	995	{
759	/* create a new empty context */	996	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	997	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	998	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	999	prev->flags |= CF_RUNNING;
764	}	1000	}
765
766	/*TODO: must not croak here */
767	if (!prev->flags & CF_RUNNING)
768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
769
770	if (next->flags & CF_RUNNING)
771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
772
773	if (next->flags & CF_DESTROYED)
774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
775		1001
776	prev->flags &= ~CF_RUNNING;	1002	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1003	next->flags |= CF_RUNNING;
778		1004
779	LOCK;	1005	LOCK;
…		…
781	if (next->flags & CF_NEW)	1007	if (next->flags & CF_NEW)
782	{	1008	{
783	/* need to start coroutine */	1009	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1010	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1011	/* first get rid of the old state */
786	save_perl (prev);	1012	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1013	/* setup coroutine call */
788	setup_coro (next);	1014	setup_coro (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1015	}
792	else	1016	else
793	{	1017	{
794	/* coroutine already started */	1018	/* coroutine already started */
795	save_perl (prev);	1019	save_perl (aTHX_ prev);
796	load_perl (next);	1020	load_perl (aTHX_ next);
797	}	1021	}
798		1022
799	prev__cctx = prev->cctx;	1023	prev__cctx = prev->cctx;
800		1024
801	/* possibly "free" the cctx */	1025	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1027	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1030
807	prev->cctx = 0;	1031	prev->cctx = 0;
808		1032
809	cctx_put (prev__cctx);	1033	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1034	}
812		1035
		1036	++next->usecount;
		1037
813	if (!next->cctx)	1038	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1039	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1040
820	if (prev__cctx != next->cctx)	1041	if (prev__cctx != next->cctx)
821	{	1042	{
822	prev__cctx->top_env = PL_top_env;	1043	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1044	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1046	}
826		1047
827	free_coro_mortal ();	1048	free_coro_mortal (aTHX);
828	UNLOCK;	1049	UNLOCK;
829	}	1050	}
830	}	1051	}
831		1052
832	struct transfer_args	1053	struct transfer_args
833	{	1054	{
834	struct coro *prev, *next;	1055	struct coro *prev, *next;
835	};	1056	};
836		1057
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1060
839	/** high level stuff ********************************************************/	1061	/** high level stuff ********************************************************/
840		1062
841	static int	1063	static int
842	coro_state_destroy (struct coro *coro)	1064	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1065	{
844	if (coro->flags & CF_DESTROYED)	1066	if (coro->flags & CF_DESTROYED)
845	return 0;	1067	return 0;
846		1068
847	coro->flags |= CF_DESTROYED;	1069	coro->flags |= CF_DESTROYED;
…		…
867	temp.save = CORO_SAVE_ALL;	1089	temp.save = CORO_SAVE_ALL;
868		1090
869	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
871		1093
872	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
873	load_perl (coro);	1095	load_perl (aTHX_ coro);
874		1096
875	coro_destroy_stacks ();	1097	coro_destroy_stacks (aTHX);
876		1098
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1100
879	coro->mainstack = 0;	1101	coro->mainstack = 0;
880	}	1102	}
881		1103
882	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
884		1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
885	return 1;	1111	return 1;
886	}	1112	}
887		1113
888	static int	1114	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1115	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1116	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1117	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
893		1119
		1120	coro->hv = 0;
		1121
894	if (--coro->refcnt < 0)	1122	if (--coro->refcnt < 0)
895	{	1123	{
896	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1125	Safefree (coro);
898	}	1126	}
899		1127
900	return 0;	1128	return 0;
901	}	1129	}
…		…
919	#else	1147	#else
920	# define MGf_DUP 0	1148	# define MGf_DUP 0
921	#endif	1149	#endif
922	};	1150	};
923		1151
924	static struct coro *
925	SvSTATE (SV *coro)
926	{
927	HV *stash;
928	MAGIC *mg;
929
930	if (SvROK (coro))
931	coro = SvRV (coro);
932
933	stash = SvSTASH (coro);
934	if (stash != coro_stash && stash != coro_state_stash)
935	{
936	/* very slow, but rare, check */
937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938	croak ("Coro::State object required");
939	}
940
941	mg = CORO_MAGIC (coro);
942	return (struct coro *)mg->mg_ptr;
943	}
944
945	static void	1152	static void
946	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1153	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1154	{
948	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
950	}	1158	}
951		1159
952	static void	1160	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1161	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1162	{
		1163	dTHX;
955	struct transfer_args ta;	1164	struct transfer_args ta;
956		1165
957	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	1167	TRANSFER (ta);
959	}	1168	}
960		1169
961	static int	1170	static int
962	api_save (SV *coro_sv, int new_save)	1171	api_save (SV *coro_sv, int new_save)
963	{	1172	{
		1173	dTHX;
964	struct coro *coro = SvSTATE (coro_sv);	1174	struct coro *coro = SvSTATE (coro_sv);
965	int old_save = coro->save;	1175	int old_save = coro->save;
966		1176
967	if (new_save >= 0)	1177	if (new_save >= 0)
968	coro->save = new_save;	1178	coro->save = new_save;
…		…
971	}	1181	}
972		1182
973	/** Coro ********************************************************************/	1183	/** Coro ********************************************************************/
974		1184
975	static void	1185	static void
976	coro_enq (SV *coro_sv)	1186	coro_enq (pTHX_ SV *coro_sv)
977	{	1187	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	1189	}
980		1190
981	static SV *	1191	static SV *
982	coro_deq (int min_prio)	1192	coro_deq (pTHX_ int min_prio)
983	{	1193	{
984	int prio = PRIO_MAX - PRIO_MIN;	1194	int prio = PRIO_MAX - PRIO_MIN;
985		1195
986	min_prio -= PRIO_MIN;	1196	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1197	if (min_prio < 0)
…		…
995	}	1205	}
996		1206
997	static int	1207	static int
998	api_ready (SV *coro_sv)	1208	api_ready (SV *coro_sv)
999	{	1209	{
		1210	dTHX;
1000	struct coro *coro;	1211	struct coro *coro;
1001		1212
1002	if (SvROK (coro_sv))	1213	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1214	coro_sv = SvRV (coro_sv);
1004		1215
…		…
1008	return 0;	1219	return 0;
1009		1220
1010	coro->flags |= CF_READY;	1221	coro->flags |= CF_READY;
1011		1222
1012	LOCK;	1223	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1225	++coro_nready;
1015	UNLOCK;	1226	UNLOCK;
1016		1227
1017	return 1;	1228	return 1;
1018	}	1229	}
1019		1230
1020	static int	1231	static int
1021	api_is_ready (SV *coro_sv)	1232	api_is_ready (SV *coro_sv)
1022	{	1233	{
		1234	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1235	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1236	}
1025		1237
1026	static void	1238	static void
1027	prepare_schedule (struct transfer_args *ta)	1239	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1240	{
1029	SV *prev_sv, *next_sv;	1241	SV *prev_sv, *next_sv;
1030		1242
1031	for (;;)	1243	for (;;)
1032	{	1244	{
1033	LOCK;	1245	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1246	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1247
1036	/* nothing to schedule: call the idle handler */	1248	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1249	if (!next_sv)
1038	{	1250	{
1039	dSP;	1251	dSP;
…		…
1067	break;	1279	break;
1068	}	1280	}
1069		1281
1070	/* free this only after the transfer */	1282	/* free this only after the transfer */
1071	prev_sv = SvRV (coro_current);	1283	prev_sv = SvRV (coro_current);
1072	SvRV_set (coro_current, next_sv);
1073	ta->prev = SvSTATE (prev_sv);	1284	ta->prev = SvSTATE (prev_sv);
1074		1285	TRANSFER_CHECK (*ta);
1075	assert (ta->next->flags & CF_READY);	1286	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1287	ta->next->flags &= ~CF_READY;
		1288	SvRV_set (coro_current, next_sv);
1077		1289
1078	LOCK;	1290	LOCK;
1079	free_coro_mortal ();	1291	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1292	coro_mortal = prev_sv;
1081	UNLOCK;	1293	UNLOCK;
1082	}	1294	}
1083		1295
1084	static void	1296	static void
1085	prepare_cede (struct transfer_args *ta)	1297	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1298	{
1087	api_ready (coro_current);	1299	api_ready (coro_current);
1088	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
1089	}	1301	}
1090		1302
1091	static int	1303	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1304	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1305	{
1094	if (coro_nready)	1306	if (coro_nready)
1095	{	1307	{
1096	SV *prev = SvRV (coro_current);	1308	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1309	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1310	api_ready (prev);
1099	return 1;	1311	return 1;
1100	}	1312	}
1101	else	1313	else
1102	return 0;	1314	return 0;
1103	}	1315	}
1104		1316
1105	static void	1317	static void
1106	api_schedule (void)	1318	api_schedule (void)
1107	{	1319	{
		1320	dTHX;
1108	struct transfer_args ta;	1321	struct transfer_args ta;
1109		1322
1110	prepare_schedule (&ta);	1323	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1324	TRANSFER (ta);
1112	}	1325	}
1113		1326
1114	static int	1327	static int
1115	api_cede (void)	1328	api_cede (void)
1116	{	1329	{
		1330	dTHX;
1117	struct transfer_args ta;	1331	struct transfer_args ta;
1118		1332
1119	prepare_cede (&ta);	1333	prepare_cede (aTHX_ &ta);
1120		1334
1121	if (ta.prev != ta.next)	1335	if (ta.prev != ta.next)
1122	{	1336	{
1123	TRANSFER (ta);	1337	TRANSFER (ta);
1124	return 1;	1338	return 1;
…		…
1128	}	1342	}
1129		1343
1130	static int	1344	static int
1131	api_cede_notself (void)	1345	api_cede_notself (void)
1132	{	1346	{
		1347	dTHX;
1133	struct transfer_args ta;	1348	struct transfer_args ta;
1134		1349
1135	if (prepare_cede_notself (&ta))	1350	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1351	{
1137	TRANSFER (ta);	1352	TRANSFER (ta);
1138	return 1;	1353	return 1;
1139	}	1354	}
1140	else	1355	else
1141	return 0;	1356	return 0;
1142	}	1357	}
1143		1358
		1359	static void
		1360	api_trace (SV *coro_sv, int flags)
		1361	{
		1362	dTHX;
		1363	struct coro *coro = SvSTATE (coro_sv);
		1364
		1365	if (flags & CC_TRACE)
		1366	{
		1367	if (!coro->cctx)
		1368	coro->cctx = cctx_new ();
		1369	else if (!(coro->cctx->flags & CC_TRACE))
		1370	croak ("cannot enable tracing on coroutine with custom stack");
		1371
		1372	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1373	}
		1374	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1375	{
		1376	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1377
		1378	if (coro->flags & CF_RUNNING)
		1379	PL_runops = RUNOPS_DEFAULT;
		1380	else
		1381	coro->runops = RUNOPS_DEFAULT;
		1382	}
		1383	}
		1384
1144	MODULE = Coro::State PACKAGE = Coro::State	1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145		1386
1146	PROTOTYPES: DISABLE	1387	PROTOTYPES: DISABLE
1147		1388
1148	BOOT:	1389	BOOT:
1149	{	1390	{
…		…
1151	MUTEX_INIT (&coro_mutex);	1392	MUTEX_INIT (&coro_mutex);
1152	#endif	1393	#endif
1153	BOOT_PAGESIZE;	1394	BOOT_PAGESIZE;
1154		1395
1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1156		1402
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1161	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1162		1410
1163	main_mainstack = PL_mainstack;	1411	main_mainstack = PL_mainstack;
		1412	main_top_env = PL_top_env;
		1413
		1414	while (main_top_env->je_prev)
		1415	main_top_env = main_top_env->je_prev;
1164		1416
1165	coroapi.ver = CORO_API_VERSION;	1417	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1418	coroapi.transfer = api_transfer;
1167		1419
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1176	HV *hv;	1428	HV *hv;
1177	int i;	1429	int i;
1178		1430
1179	Newz (0, coro, 1, struct coro);	1431	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1432	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;	1433	coro->save = CORO_SAVE_DEF;
1182	coro->flags = CF_NEW;	1434	coro->flags = CF_NEW;
1183		1435
		1436	if (coro_first) coro_first->prev = coro;
		1437	coro->next = coro_first;
		1438	coro_first = coro;
		1439
1184	hv = newHV ();	1440	coro->hv = hv = newHV ();
1185	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1441	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1186	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187		1443
1188	for (i = 1; i < items; i++)	1444	for (i = 1; i < items; i++)
1189	av_push (coro->args, newSVsv (ST (i)));	1445	av_push (coro->args, newSVsv (ST (i)));
…		…
1196	CODE:	1452	CODE:
1197	RETVAL = api_save (coro, new_save);	1453	RETVAL = api_save (coro, new_save);
1198	OUTPUT:	1454	OUTPUT:
1199	RETVAL	1455	RETVAL
1200		1456
		1457	int
		1458	save_also (SV *coro_sv, int save_also)
		1459	CODE:
		1460	{
		1461	struct coro *coro = SvSTATE (coro_sv);
		1462	RETVAL = coro->save;
		1463	coro->save |= save_also;
		1464	}
		1465	OUTPUT:
		1466	RETVAL
		1467
		1468	# these not obviously related functions are all rolled into the same xs
		1469	# function to increase chances that they all will call transfer with the same
		1470	# stack offset
1201	void	1471	void
1202	_set_stacklevel (...)	1472	_set_stacklevel (...)
1203	ALIAS:	1473	ALIAS:
1204	Coro::State::transfer = 1	1474	Coro::State::transfer = 1
1205	Coro::schedule = 2	1475	Coro::schedule = 2
…		…
1218		1488
1219	case 1:	1489	case 1:
1220	if (items != 2)	1490	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1491	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1492
1223	prepare_transfer (&ta, ST (0), ST (1));	1493	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1494	break;
1225		1495
1226	case 2:	1496	case 2:
1227	prepare_schedule (&ta);	1497	prepare_schedule (aTHX_ &ta);
1228	break;	1498	break;
1229		1499
1230	case 3:	1500	case 3:
1231	prepare_cede (&ta);	1501	prepare_cede (aTHX_ &ta);
1232	break;	1502	break;
1233		1503
1234	case 4:	1504	case 4:
1235	if (!prepare_cede_notself (&ta))	1505	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1506	XSRETURN_EMPTY;
1237		1507
1238	break;	1508	break;
1239	}	1509	}
1240		1510
…		…
1246	}	1516	}
1247		1517
1248	bool	1518	bool
1249	_destroy (SV *coro_sv)	1519	_destroy (SV *coro_sv)
1250	CODE:	1520	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1521	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1522	OUTPUT:
1253	RETVAL	1523	RETVAL
1254		1524
1255	void	1525	void
1256	_exit (code)	1526	_exit (code)
…		…
1258	PROTOTYPE: $	1528	PROTOTYPE: $
1259	CODE:	1529	CODE:
1260	_exit (code);	1530	_exit (code);
1261		1531
1262	int	1532	int
		1533	cctx_stacksize (int new_stacksize = 0)
		1534	CODE:
		1535	RETVAL = coro_stacksize;
		1536	if (new_stacksize)
		1537	coro_stacksize = new_stacksize;
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
1263	cctx_count ()	1542	cctx_count ()
1264	CODE:	1543	CODE:
1265	RETVAL = cctx_count;	1544	RETVAL = cctx_count;
1266	OUTPUT:	1545	OUTPUT:
1267	RETVAL	1546	RETVAL
…		…
1271	CODE:	1550	CODE:
1272	RETVAL = cctx_idle;	1551	RETVAL = cctx_idle;
1273	OUTPUT:	1552	OUTPUT:
1274	RETVAL	1553	RETVAL
1275		1554
		1555	void
		1556	list ()
		1557	PPCODE:
		1558	{
		1559	struct coro *coro;
		1560	for (coro = coro_first; coro; coro = coro->next)
		1561	if (coro->hv)
		1562	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1563	}
		1564
		1565	void
		1566	call (Coro::State coro, SV *coderef)
		1567	ALIAS:
		1568	eval = 1
		1569	CODE:
		1570	{
		1571	if (coro->mainstack)
		1572	{
		1573	struct coro temp;
		1574	Zero (&temp, 1, struct coro);
		1575	temp.save = CORO_SAVE_ALL;
		1576
		1577	if (!(coro->flags & CF_RUNNING))
		1578	{
		1579	save_perl (aTHX_ &temp);
		1580	load_perl (aTHX_ coro);
		1581	}
		1582
		1583	{
		1584	dSP;
		1585	ENTER;
		1586	SAVETMPS;
		1587	PUSHMARK (SP);
		1588	PUTBACK;
		1589	if (ix)
		1590	eval_sv (coderef, 0);
		1591	else
		1592	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1593	SPAGAIN;
		1594	FREETMPS;
		1595	LEAVE;
		1596	PUTBACK;
		1597	}
		1598
		1599	if (!(coro->flags & CF_RUNNING))
		1600	{
		1601	save_perl (aTHX_ coro);
		1602	load_perl (aTHX_ &temp);
		1603	}
		1604	}
		1605	}
		1606
		1607	SV *
		1608	is_ready (Coro::State coro)
		1609	PROTOTYPE: $
		1610	ALIAS:
		1611	is_ready = CF_READY
		1612	is_running = CF_RUNNING
		1613	is_new = CF_NEW
		1614	is_destroyed = CF_DESTROYED
		1615	CODE:
		1616	RETVAL = boolSV (coro->flags & ix);
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	void
		1621	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1622
		1623	SV *
		1624	has_stack (Coro::State coro)
		1625	PROTOTYPE: $
		1626	CODE:
		1627	RETVAL = boolSV (!!coro->cctx);
		1628	OUTPUT:
		1629	RETVAL
		1630
		1631	int
		1632	is_traced (Coro::State coro)
		1633	PROTOTYPE: $
		1634	CODE:
		1635	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1636	OUTPUT:
		1637	RETVAL
		1638
		1639	IV
		1640	rss (Coro::State coro)
		1641	PROTOTYPE: $
		1642	ALIAS:
		1643	usecount = 1
		1644	CODE:
		1645	switch (ix)
		1646	{
		1647	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1648	case 1: RETVAL = coro->usecount; break;
		1649	}
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653
1276	MODULE = Coro::State PACKAGE = Coro	1654	MODULE = Coro::State PACKAGE = Coro
1277		1655
1278	BOOT:	1656	BOOT:
1279	{	1657	{
1280	int i;	1658	int i;
		1659
		1660	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1661	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1662	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1663
		1664	coro_current = get_sv ("Coro::current", FALSE);
		1665	SvREADONLY_on (coro_current);
1281		1666
1282	coro_stash = gv_stashpv ("Coro", TRUE);	1667	coro_stash = gv_stashpv ("Coro", TRUE);
1283		1668
1284	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1669	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1670	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1671	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1672	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1673	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1674	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290
1291	coro_current = get_sv ("Coro::current", FALSE);
1292	SvREADONLY_on (coro_current);
1293		1675
1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1676	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295	coro_ready[i] = newAV ();	1677	coro_ready[i] = newAV ();
1296		1678
1297	{	1679	{
…		…
1347	CODE:	1729	CODE:
1348	RETVAL = boolSV (api_ready (self));	1730	RETVAL = boolSV (api_ready (self));
1349	OUTPUT:	1731	OUTPUT:
1350	RETVAL	1732	RETVAL
1351		1733
1352	SV *
1353	is_ready (SV *self)
1354	PROTOTYPE: $
1355	CODE:
1356	RETVAL = boolSV (api_is_ready (self));
1357	OUTPUT:
1358	RETVAL
1359
1360	int	1734	int
1361	nready (...)	1735	nready (...)
1362	PROTOTYPE:	1736	PROTOTYPE:
1363	CODE:	1737	CODE:
1364	RETVAL = coro_nready;	1738	RETVAL = coro_nready;
1365	OUTPUT:	1739	OUTPUT:
1366	RETVAL	1740	RETVAL
1367		1741
		1742	# for async_pool speedup
		1743	void
		1744	_pool_1 (SV *cb)
		1745	CODE:
		1746	{
		1747	int i, len;
		1748	HV *hv = (HV *)SvRV (coro_current);
		1749	AV *defav = GvAV (PL_defgv);
		1750	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1751	AV *invoke_av;
		1752
		1753	if (!invoke)
		1754	croak ("\3terminate\2\n");
		1755
		1756	hv_store (hv, "desc", sizeof ("desc") - 1,
		1757	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1758
		1759	invoke_av = (AV *)SvRV (invoke);
		1760	len = av_len (invoke_av);
		1761
		1762	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1763
		1764	if (len > 0)
		1765	{
		1766	av_fill (defav, len - 1);
		1767	for (i = 0; i < len; ++i)
		1768	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1769	}
		1770
		1771	SvREFCNT_dec (invoke);
		1772	}
		1773
		1774	void
		1775	_pool_2 (SV *cb)
		1776	CODE:
		1777	{
		1778	struct coro *coro = SvSTATE (coro_current);
		1779
		1780	sv_setsv (cb, &PL_sv_undef);
		1781
		1782	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1783	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1784	croak ("\3terminate\2\n");
		1785
		1786	av_clear (GvAV (PL_defgv));
		1787	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1788	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1789
		1790	coro->save = CORO_SAVE_DEF;
		1791	coro->prio = 0;
		1792
		1793	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1794	api_trace (coro_current, 0);
		1795
		1796	av_push (av_async_pool, newSVsv (coro_current));
		1797	}
		1798
		1799
1368	MODULE = Coro::State PACKAGE = Coro::AIO	1800	MODULE = Coro::State PACKAGE = Coro::AIO
1369		1801
1370	SV *	1802	SV *
1371	_get_state ()	1803	_get_state ()
1372	CODE:	1804	CODE:

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