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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC vs.
Revision 1.189 by root, Fri Oct 5 20:38:43 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
…		…
127	};	128	};
128		129
129	static size_t coro_stacksize = CORO_STACKSIZE;	130	static size_t coro_stacksize = CORO_STACKSIZE;
130	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
131	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;
132	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
133	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
134		136
		137	static GV *irsgv; /* $/ */
		138	static GV *stdoutgv; /* *STDOUT */
		139
		140	/* async_pool helper stuff */
		141	static SV *sv_pool_rss;
		142	static SV *sv_pool_size;
		143	static AV *av_async_pool;
		144
135	static struct coro_cctx *cctx_first;	145	static struct coro_cctx *cctx_first;
136	static int cctx_count, cctx_idle;	146	static int cctx_count, cctx_idle;
		147
		148	enum {
		149	CC_MAPPED = 0x01,
		150	CC_NOREUSE = 0x02, /* throw this away after tracing */
		151	CC_TRACE = 0x04,
		152	CC_TRACE_SUB = 0x08, /* trace sub calls */
		153	CC_TRACE_LINE = 0x10, /* trace each statement */
		154	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		155	};
137		156
138	/* this is a structure representing a c-level coroutine */	157	/* this is a structure representing a c-level coroutine */
139	typedef struct coro_cctx {	158	typedef struct coro_cctx {
140	struct coro_cctx *next;	159	struct coro_cctx *next;
141		160
…		…
150	coro_context cctx;	169	coro_context cctx;
151		170
152	#if CORO_USE_VALGRIND	171	#if CORO_USE_VALGRIND
153	int valgrind_id;	172	int valgrind_id;
154	#endif	173	#endif
155	char inuse, mapped;	174	unsigned char flags;
156	} coro_cctx;	175	} coro_cctx;
157		176
158	enum {	177	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	178	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	179	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	187	coro_cctx *cctx;
169		188
170	/* data associated with this coroutine (initial args) */	189	/* data associated with this coroutine (initial args) */
171	AV *args;	190	AV *args;
172	int refcnt;	191	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	192	int flags; /* CF_ flags */
175		193
176	/* optionally saved, might be zero */	194	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	195	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	196	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	197	SV *errsv; /* $@ */
		198	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	199	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	200	SV *irssv_sv; /* real $/ cache */
182		201
183	#define VAR(name,type) type name;	202	#define VAR(name,type) type name;
184	# include "state.h"	203	# include "state.h"
185	#undef VAR	204	#undef VAR
186		205
		206	/* statistics */
		207	int usecount; /* number of transfers to this coro */
		208
187	/* coro process data */	209	/* coro process data */
188	int prio;	210	int prio;
		211	//SV *throw;
		212
		213	/* async_pool */
		214	SV *saved_deffh;
		215
		216	/* linked list */
		217	struct coro *next, *prev;
		218	HV *hv; /* the perl hash associated with this coro, if any */
189	};	219	};
190		220
191	typedef struct coro *Coro__State;	221	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	222	typedef struct coro *Coro__State_or_hashref;
193		223
…		…
202		232
203	/* for Coro.pm */	233	/* for Coro.pm */
204	static SV *coro_current;	234	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	235	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	236	static int coro_nready;
		237	static struct coro *coro_first;
207		238
208	/** lowlevel stuff **********************************************************/	239	/** lowlevel stuff **********************************************************/
209		240
210	static AV *	241	static AV *
211	coro_clone_padlist (CV *cv)	242	coro_clone_padlist (pTHX_ CV *cv)
212	{	243	{
213	AV *padlist = CvPADLIST (cv);	244	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	245	AV *newpadlist, *newpad;
215		246
216	newpadlist = newAV ();	247	newpadlist = newAV ();
…		…
228		259
229	return newpadlist;	260	return newpadlist;
230	}	261	}
231		262
232	static void	263	static void
233	free_padlist (AV *padlist)	264	free_padlist (pTHX_ AV *padlist)
234	{	265	{
235	/* may be during global destruction */	266	/* may be during global destruction */
236	if (SvREFCNT (padlist))	267	if (SvREFCNT (padlist))
237	{	268	{
238	I32 i = AvFILLp (padlist);	269	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	290	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	291	AV *av = (AV *)mg->mg_obj;
261		292
262	/* casting is fun. */	293	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	294	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	295	free_padlist (aTHX_ padlist);
265		296
266	SvREFCNT_dec (av);	297	SvREFCNT_dec (av);
267		298
268	return 0;	299	return 0;
269	}	300	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	308	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	309	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	310	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	311	: 0
281		312
		313	static struct coro *
		314	SvSTATE_ (pTHX_ SV *coro)
		315	{
		316	HV *stash;
		317	MAGIC *mg;
		318
		319	if (SvROK (coro))
		320	coro = SvRV (coro);
		321
		322	if (SvTYPE (coro) != SVt_PVHV)
		323	croak ("Coro::State object required");
		324
		325	stash = SvSTASH (coro);
		326	if (stash != coro_stash && stash != coro_state_stash)
		327	{
		328	/* very slow, but rare, check */
		329	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		330	croak ("Coro::State object required");
		331	}
		332
		333	mg = CORO_MAGIC (coro);
		334	return (struct coro *)mg->mg_ptr;
		335	}
		336
		337	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		338
282	/* the next two functions merely cache the padlists */	339	/* the next two functions merely cache the padlists */
283	static void	340	static void
284	get_padlist (CV *cv)	341	get_padlist (pTHX_ CV *cv)
285	{	342	{
286	MAGIC *mg = CORO_MAGIC (cv);	343	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	344	AV *av;
288		345
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	346	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
…		…
295	CV *cp = Perl_cv_clone (cv);	352	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	353	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	354	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	355	SvREFCNT_dec (cp);
299	#else	356	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	357	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	358	#endif
302	}	359	}
303	}	360	}
304		361
305	static void	362	static void
306	put_padlist (CV *cv)	363	put_padlist (pTHX_ CV *cv)
307	{	364	{
308	MAGIC *mg = CORO_MAGIC (cv);	365	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	366	AV *av;
310		367
311	if (!mg)	368	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	381	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	382	}
326		383
327	/** load & save, init *******************************************************/	384	/** load & save, init *******************************************************/
328		385
329	#define SB do {
330	#define SE } while (0)
331
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334	static void	386	static void
335	load_perl (Coro__State c)	387	load_perl (pTHX_ Coro__State c)
336	{	388	{
337	#define VAR(name,type) PL_ ## name = c->name;	389	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	390	# include "state.h"
339	#undef VAR	391	#undef VAR
340		392
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	393	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	394	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	395	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	396	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		397
356	{	398	{
357	dSP;	399	dSP;
358	CV *cv;	400	CV *cv;
359		401
360	/* now do the ugly restore mess */	402	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	403	while ((cv = (CV *)POPs))
362	{	404	{
363	put_padlist (cv); /* mark this padlist as available */	405	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	406	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	407	CvPADLIST (cv) = (AV *)POPs;
366	}	408	}
367		409
368	PUTBACK;	410	PUTBACK;
369	}	411	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	412	}
372		413
373	static void	414	static void
374	save_perl (Coro__State c)	415	save_perl (pTHX_ Coro__State c)
375	{	416	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	417	{
378	dSP;	418	dSP;
379	I32 cxix = cxstack_ix;	419	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	420	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	421	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	423	/*
384	* the worst thing you can imagine happens first - we have to save	424	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	425	* (and reinitialize) all cv's in the whole callchain :(
386	*/	426	*/
387		427
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	428	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	429	/* this loop was inspired by pp_caller */
391	for (;;)	430	for (;;)
392	{	431	{
393	while (cxix >= 0)	432	while (cxix >= 0)
394	{	433	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	434	PERL_CONTEXT *cx = &ccstk[cxix--];
396		435
397	if (CxTYPE (cx) == CXt_SUB)	436	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	437	{
399	CV *cv = cx->blk_sub.cv;	438	CV *cv = cx->blk_sub.cv;
400		439
401	if (CvDEPTH (cv))	440	if (CvDEPTH (cv))
402	{	441	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	443	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	444	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	445	PUSHs ((SV *)cv);
407		446
408	CvDEPTH (cv) = 0;	447	CvDEPTH (cv) = 0;
409	get_padlist (cv);	448	get_padlist (aTHX_ cv);
410	}	449	}
411	}	450	}
412	}	451	}
413		452
414	if (top_si->si_type == PERLSI_MAIN)	453	if (top_si->si_type == PERLSI_MAIN)
415	break;	454	break;
416		455
417	top_si = top_si->si_prev;	456	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	457	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	458	cxix = top_si->si_cxix;
420	}	459	}
421		460
422	PUTBACK;	461	PUTBACK;
423	}	462	}
424		463
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	464	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	465	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	466	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	467	c->irssv_sv = GvSV (irsgv);
429		468
430	#define VAR(name,type)c->name = PL_ ## name;	469	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	470	# include "state.h"
432	#undef VAR	471	#undef VAR
433	}	472	}
…		…
440	*/	479	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	480	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	481	# define coro_init_stacks init_stacks
443	#else	482	#else
444	static void	483	static void
445	coro_init_stacks ()	484	coro_init_stacks (pTHX)
446	{	485	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	486	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	487	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	488	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		490
452	PL_stack_base = AvARRAY(PL_curstack);	491	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	492	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	493	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		494
456	New(50,PL_tmps_stack,128,SV*);	495	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	496	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	497	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	498	PL_tmps_max = 64;
460		499
461	New(54,PL_markstack,32,I32);	500	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	502	PL_markstack_max = PL_markstack + 16;
464		503
465	#ifdef SET_MARK_OFFSET	504	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
467	#endif	506	#endif
468		507
469	New(54,PL_scopestack,32,I32);	508	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	510	PL_scopestack_max = 16;
472		511
473	New(54,PL_savestack,64,ANY);	512	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	513	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	514	PL_savestack_max = 64;
476		515
477	#if !PERL_VERSION_ATLEAST (5,9,0)	516	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	517	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	518	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	519	PL_retstack_max = 4;
481	#endif	520	#endif
482	}	521	}
483	#endif	522	#endif
484		523
485	/*	524	/*
486	* destroy the stacks, the callchain etc...	525	* destroy the stacks, the callchain etc...
487	*/	526	*/
488	static void	527	static void
489	coro_destroy_stacks ()	528	coro_destroy_stacks (pTHX)
490	{	529	{
491	if (!IN_DESTRUCT)
492	{
493	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);
495	assert (PL_tmps_floor == -1);
496
497	/* free all temporaries */
498	FREETMPS;
499	assert (PL_tmps_ix == -1);
500
501	/* unwind all extra stacks */
502	POPSTACK_TO (PL_mainstack);
503
504	/* unwind main stack */
505	dounwind (-1);
506	}
507
508	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
509	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
510		532
511	while (PL_curstackinfo)	533	while (PL_curstackinfo)
512	{	534	{
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	550	Safefree (PL_retstack);
529	#endif	551	#endif
530	}	552	}
531		553
		554	static size_t
		555	coro_rss (pTHX_ struct coro *coro)
		556	{
		557	size_t rss = sizeof (*coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
532	/** coroutine stack handling ************************************************/	585	/** coroutine stack handling ************************************************/
533		586
534	static void	587	static void
535	setup_coro (struct coro *coro)	588	coro_setup (pTHX_ struct coro *coro)
536	{	589	{
537	/*	590	/*
538	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
539	*/	592	*/
540
541	coro_init_stacks ();	593	coro_init_stacks (aTHX);
542		594
		595	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	596	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	597	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	598	PL_comppad = 0;
546	PL_curpm = 0;	599	PL_curpm = 0;
547	PL_localizing = 0;	600	PL_localizing = 0;
548	PL_dirty = 0;	601	PL_dirty = 0;
549	PL_restartop = 0;	602	PL_restartop = 0;
		603
		604	GvSV (PL_defgv) = NEWSV (0, 0);
		605	GvAV (PL_defgv) = coro->args; coro->args = 0;
		606	GvSV (PL_errgv) = NEWSV (0, 0);
		607	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		608	PL_rs = newSVsv (GvSV (irsgv));
		609	PL_defoutgv = SvREFCNT_inc (stdoutgv);
550		610
551	{	611	{
552	dSP;	612	dSP;
553	LOGOP myop;	613	LOGOP myop;
554		614
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	615	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	616	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	617	myop.op_flags = OPf_WANT_VOID;
561		618
562	PUSHMARK (SP);	619	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	620	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	621	PUTBACK;
565	PL_op = (OP *)&myop;	622	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	623	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	624	SPAGAIN;
568	}	625	}
569		626
570	ENTER; /* necessary e.g. for dounwind */	627	ENTER; /* necessary e.g. for dounwind */
571	}	628	}
572		629
573	static void	630	static void
		631	coro_destroy (pTHX_ struct coro *coro)
		632	{
		633	if (!IN_DESTRUCT)
		634	{
		635	/* restore all saved variables and stuff */
		636	LEAVE_SCOPE (0);
		637	assert (PL_tmps_floor == -1);
		638
		639	/* free all temporaries */
		640	FREETMPS;
		641	assert (PL_tmps_ix == -1);
		642
		643	/* unwind all extra stacks */
		644	POPSTACK_TO (PL_mainstack);
		645
		646	/* unwind main stack */
		647	dounwind (-1);
		648	}
		649
		650	SvREFCNT_dec (GvSV (PL_defgv));
		651	SvREFCNT_dec (GvAV (PL_defgv));
		652	SvREFCNT_dec (GvSV (PL_errgv));
		653	SvREFCNT_dec (PL_defoutgv);
		654	SvREFCNT_dec (PL_rs);
		655	SvREFCNT_dec (GvSV (irsgv));
		656
		657	SvREFCNT_dec (coro->saved_deffh);
		658	//SvREFCNT_dec (coro->throw);
		659
		660	coro_destroy_stacks (aTHX);
		661	}
		662
		663	static void
574	free_coro_mortal ()	664	free_coro_mortal (pTHX)
575	{	665	{
576	if (coro_mortal)	666	if (coro_mortal)
577	{	667	{
578	SvREFCNT_dec (coro_mortal);	668	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	669	coro_mortal = 0;
580	}	670	}
581	}	671	}
582		672
		673	static int
		674	runops_trace (pTHX)
		675	{
		676	COP *oldcop = 0;
		677	int oldcxix = -2;
		678	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		679	coro_cctx *cctx = coro->cctx;
		680
		681	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		682	{
		683	PERL_ASYNC_CHECK ();
		684
		685	if (cctx->flags & CC_TRACE_ALL)
		686	{
		687	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		688	{
		689	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		690	SV **bot, **top;
		691	AV *av = newAV (); /* return values */
		692	SV **cb;
		693	dSP;
		694
		695	GV *gv = CvGV (cx->blk_sub.cv);
		696	SV *fullname = sv_2mortal (newSV (0));
		697	if (isGV (gv))
		698	gv_efullname3 (fullname, gv, 0);
		699
		700	bot = PL_stack_base + cx->blk_oldsp + 1;
		701	top = cx->blk_gimme == G_ARRAY ? SP + 1
		702	: cx->blk_gimme == G_SCALAR ? bot + 1
		703	: bot;
		704
		705	while (bot < top)
		706	av_push (av, SvREFCNT_inc (*bot++));
		707
		708	PL_runops = RUNOPS_DEFAULT;
		709	ENTER;
		710	SAVETMPS;
		711	EXTEND (SP, 3);
		712	PUSHMARK (SP);
		713	PUSHs (&PL_sv_no);
		714	PUSHs (fullname);
		715	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		716	PUTBACK;
		717	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		718	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		719	SPAGAIN;
		720	FREETMPS;
		721	LEAVE;
		722	PL_runops = runops_trace;
		723	}
		724
		725	if (oldcop != PL_curcop)
		726	{
		727	oldcop = PL_curcop;
		728
		729	if (PL_curcop != &PL_compiling)
		730	{
		731	SV **cb;
		732
		733	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		734	{
		735	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		736
		737	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		738	{
		739	runops_proc_t old_runops = PL_runops;
		740	dSP;
		741	GV *gv = CvGV (cx->blk_sub.cv);
		742	SV *fullname = sv_2mortal (newSV (0));
		743
		744	if (isGV (gv))
		745	gv_efullname3 (fullname, gv, 0);
		746
		747	PL_runops = RUNOPS_DEFAULT;
		748	ENTER;
		749	SAVETMPS;
		750	EXTEND (SP, 3);
		751	PUSHMARK (SP);
		752	PUSHs (&PL_sv_yes);
		753	PUSHs (fullname);
		754	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		755	PUTBACK;
		756	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		757	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		758	SPAGAIN;
		759	FREETMPS;
		760	LEAVE;
		761	PL_runops = runops_trace;
		762	}
		763
		764	oldcxix = cxstack_ix;
		765	}
		766
		767	if (cctx->flags & CC_TRACE_LINE)
		768	{
		769	dSP;
		770
		771	PL_runops = RUNOPS_DEFAULT;
		772	ENTER;
		773	SAVETMPS;
		774	EXTEND (SP, 3);
		775	PL_runops = RUNOPS_DEFAULT;
		776	PUSHMARK (SP);
		777	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		778	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		779	PUTBACK;
		780	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		781	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		782	SPAGAIN;
		783	FREETMPS;
		784	LEAVE;
		785	PL_runops = runops_trace;
		786	}
		787	}
		788	}
		789	}
		790	}
		791
		792	TAINT_NOT;
		793	return 0;
		794	}
		795
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	796	/* inject a fake call to Coro::State::_cctx_init into the execution */
		797	/* _cctx_init should be careful, as it could be called at almost any time */
		798	/* during execution of a perl program */
584	static void NOINLINE	799	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	800	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	801	{
587	dSP;	802	dSP;
588	LOGOP myop;	803	LOGOP myop;
		804
		805	PL_top_env = &PL_start_env;
		806
		807	if (cctx->flags & CC_TRACE)
		808	PL_runops = runops_trace;
589		809
590	Zero (&myop, 1, LOGOP);	810	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	811	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	812	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		813
…		…
599	PL_op = (OP *)&myop;	819	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	821	SPAGAIN;
602	}	822	}
603		823
		824	/*
		825	* this is a _very_ stripped down perl interpreter ;)
		826	*/
604	static void	827	static void
605	coro_run (void *arg)	828	coro_run (void *arg)
606	{	829	{
		830	dTHX;
		831
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	832	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	833	UNLOCK;
609		834
610	/*	835	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	836	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		837
615	/* inject call to cctx_init */	838	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	839	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		840
618	/* somebody will hit me for both perl_run and PL_restartop */	841	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	842	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	843	perl_run (PL_curinterp);
621		844
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	845	/*
623	abort ();	846	* If perl-run returns we assume exit() was being called or the coro
		847	* fell off the end, which seems to be the only valid (non-bug)
		848	* reason for perl_run to return. We try to exit by jumping to the
		849	* bootstrap-time "top" top_env, as we cannot restore the "main"
		850	* coroutine as Coro has no such concept
		851	*/
		852	PL_top_env = main_top_env;
		853	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	854	}
625		855
626	static coro_cctx *	856	static coro_cctx *
627	cctx_new ()	857	cctx_new ()
628	{	858	{
…		…
645	# if CORO_STACKGUARD	875	# if CORO_STACKGUARD
646	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	876	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
647	# endif	877	# endif
648	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	878	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	879	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	cctx->mapped = 1;	880	cctx->flags |= CC_MAPPED;
651	}	881	}
652	else	882	else
653	#endif	883	#endif
654	{	884	{
655	cctx->ssize = coro_stacksize * (long)sizeof (long);	885	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
682	#if CORO_USE_VALGRIND	912	#if CORO_USE_VALGRIND
683	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	913	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
684	#endif	914	#endif
685		915
686	#if HAVE_MMAP	916	#if HAVE_MMAP
687	if (cctx->mapped)	917	if (cctx->flags & CC_MAPPED)
688	munmap (cctx->sptr, cctx->ssize);	918	munmap (cctx->sptr, cctx->ssize);
689	else	919	else
690	#endif	920	#endif
691	Safefree (cctx->sptr);	921	Safefree (cctx->sptr);
692		922
693	Safefree (cctx);	923	Safefree (cctx);
694	}	924	}
695		925
696	static coro_cctx *	926	static coro_cctx *
697	cctx_get ()	927	cctx_get (pTHX)
698	{	928	{
699	while (cctx_first)	929	while (cctx_first)
700	{	930	{
701	coro_cctx *cctx = cctx_first;	931	coro_cctx *cctx = cctx_first;
702	cctx_first = cctx->next;	932	cctx_first = cctx->next;
703	--cctx_idle;	933	--cctx_idle;
704		934
705	if (cctx->ssize >= coro_stacksize)	935	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
706	return cctx;	936	return cctx;
707		937
708	cctx_destroy (cctx);	938	cctx_destroy (cctx);
709	}	939	}
710		940
711	PL_op = PL_op->op_next;
712	return cctx_new ();	941	return cctx_new ();
713	}	942	}
714		943
715	static void	944	static void
716	cctx_put (coro_cctx *cctx)	945	cctx_put (coro_cctx *cctx)
…		…
720	{	949	{
721	coro_cctx *first = cctx_first;	950	coro_cctx *first = cctx_first;
722	cctx_first = first->next;	951	cctx_first = first->next;
723	--cctx_idle;	952	--cctx_idle;
724		953
725	assert (!first->inuse);
726	cctx_destroy (first);	954	cctx_destroy (first);
727	}	955	}
728		956
729	++cctx_idle;	957	++cctx_idle;
730	cctx->next = cctx_first;	958	cctx->next = cctx_first;
731	cctx_first = cctx;	959	cctx_first = cctx;
732	}	960	}
733		961
734	/** coroutine switching *****************************************************/	962	/** coroutine switching *****************************************************/
735		963
736	/* never call directly, always through the coro_state_transfer global variable */
737	static void NOINLINE	964	static void NOINLINE
		965	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		966	{
		967	if (prev != next)
		968	{
		969	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		970	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		971
		972	if (next->flags & CF_RUNNING)
		973	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		974
		975	if (next->flags & CF_DESTROYED)
		976	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		977
		978	if (PL_lex_state != LEX_NOTPARSING)
		979	croak ("Coro::State::transfer called while parsing, but this is not supported");
		980	}
		981	}
		982
		983	/* always use the TRANSFER macro */
		984	static void NOINLINE
738	transfer (struct coro *prev, struct coro *next)	985	transfer (pTHX_ struct coro *prev, struct coro *next)
739	{	986	{
740	dSTACKLEVEL;	987	dSTACKLEVEL;
741		988
742	/* sometimes transfer is only called to set idle_sp */	989	/* sometimes transfer is only called to set idle_sp */
743	if (!next)	990	if (!next)
…		…
751		998
752	if (prev->flags & CF_NEW)	999	if (prev->flags & CF_NEW)
753	{	1000	{
754	/* create a new empty context */	1001	/* create a new empty context */
755	Newz (0, prev->cctx, 1, coro_cctx);	1002	Newz (0, prev->cctx, 1, coro_cctx);
756	prev->cctx->inuse = 1;
757	prev->flags &= ~CF_NEW;	1003	prev->flags &= ~CF_NEW;
758	prev->flags |= CF_RUNNING;	1004	prev->flags |= CF_RUNNING;
759	}	1005	}
760
761	/*TODO: must not croak here */
762	if (!prev->flags & CF_RUNNING)
763	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
764
765	if (next->flags & CF_RUNNING)
766	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
767
768	if (next->flags & CF_DESTROYED)
769	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
770		1006
771	prev->flags &= ~CF_RUNNING;	1007	prev->flags &= ~CF_RUNNING;
772	next->flags |= CF_RUNNING;	1008	next->flags |= CF_RUNNING;
773		1009
774	LOCK;	1010	LOCK;
…		…
776	if (next->flags & CF_NEW)	1012	if (next->flags & CF_NEW)
777	{	1013	{
778	/* need to start coroutine */	1014	/* need to start coroutine */
779	next->flags &= ~CF_NEW;	1015	next->flags &= ~CF_NEW;
780	/* first get rid of the old state */	1016	/* first get rid of the old state */
781	save_perl (prev);	1017	save_perl (aTHX_ prev);
782	/* setup coroutine call */	1018	/* setup coroutine call */
783	setup_coro (next);	1019	coro_setup (aTHX_ next);
784	/* need a new stack */
785	assert (!next->cctx);
786	}	1020	}
787	else	1021	else
788	{	1022	{
789	/* coroutine already started */	1023	/* coroutine already started */
790	save_perl (prev);	1024	save_perl (aTHX_ prev);
791	load_perl (next);	1025	load_perl (aTHX_ next);
792	}	1026	}
793		1027
794	prev__cctx = prev->cctx;	1028	prev__cctx = prev->cctx;
795		1029
796	/* possibly "free" the cctx */	1030	/* possibly "free" the cctx */
797	if (prev__cctx->idle_sp == STACKLEVEL)	1031	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
798	{	1032	{
799	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1033	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
800	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1034	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
801		1035
802	prev->cctx = 0;	1036	prev->cctx = 0;
803		1037
804	cctx_put (prev__cctx);	1038	cctx_put (prev__cctx);
805	prev__cctx->inuse = 0;
806	}	1039	}
807		1040
		1041	++next->usecount;
		1042
808	if (!next->cctx)	1043	if (!next->cctx)
809	{
810	next->cctx = cctx_get ();	1044	next->cctx = cctx_get (aTHX);
811	assert (!next->cctx->inuse);
812	next->cctx->inuse = 1;
813	}
814		1045
815	if (prev__cctx != next->cctx)	1046	if (prev__cctx != next->cctx)
816	{	1047	{
817	prev__cctx->top_env = PL_top_env;	1048	prev__cctx->top_env = PL_top_env;
818	PL_top_env = next->cctx->top_env;	1049	PL_top_env = next->cctx->top_env;
819	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1050	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
820	}	1051	}
821		1052
822	free_coro_mortal ();	1053	free_coro_mortal (aTHX);
823	UNLOCK;	1054	UNLOCK;
824	}	1055	}
825	}	1056	}
826		1057
827	struct transfer_args	1058	struct transfer_args
828	{	1059	{
829	struct coro *prev, *next;	1060	struct coro *prev, *next;
830	};	1061	};
831		1062
832	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1063	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1064	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
833		1065
834	/** high level stuff ********************************************************/	1066	/** high level stuff ********************************************************/
835		1067
836	static int	1068	static int
837	coro_state_destroy (struct coro *coro)	1069	coro_state_destroy (pTHX_ struct coro *coro)
838	{	1070	{
839	if (coro->flags & CF_DESTROYED)	1071	if (coro->flags & CF_DESTROYED)
840	return 0;	1072	return 0;
841		1073
842	coro->flags |= CF_DESTROYED;	1074	coro->flags |= CF_DESTROYED;
…		…
854		1086
855	if (coro->mainstack && coro->mainstack != main_mainstack)	1087	if (coro->mainstack && coro->mainstack != main_mainstack)
856	{	1088	{
857	struct coro temp;	1089	struct coro temp;
858		1090
859	assert (!(coro->flags & CF_RUNNING));
860
861	Zero (&temp, 1, struct coro);
862	temp.save = CORO_SAVE_ALL;
863
864	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
865	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
866		1093
867	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
868	load_perl (coro);	1095	load_perl (aTHX_ coro);
869		1096
870	coro_destroy_stacks ();	1097	coro_destroy (aTHX_ coro);
871		1098
872	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
873		1100
874	coro->mainstack = 0;	1101	coro->mainstack = 0;
875	}	1102	}
876		1103
877	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
878	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
879		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
880	return 1;	1111	return 1;
881	}	1112	}
882		1113
883	static int	1114	static int
884	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1115	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
885	{	1116	{
886	struct coro *coro = (struct coro *)mg->mg_ptr;	1117	struct coro *coro = (struct coro *)mg->mg_ptr;
887	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
888		1119
		1120	coro->hv = 0;
		1121
889	if (--coro->refcnt < 0)	1122	if (--coro->refcnt < 0)
890	{	1123	{
891	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
892	Safefree (coro);	1125	Safefree (coro);
893	}	1126	}
894		1127
895	return 0;	1128	return 0;
896	}	1129	}
…		…
914	#else	1147	#else
915	# define MGf_DUP 0	1148	# define MGf_DUP 0
916	#endif	1149	#endif
917	};	1150	};
918		1151
919	static struct coro *
920	SvSTATE (SV *coro)
921	{
922	HV *stash;
923	MAGIC *mg;
924
925	if (SvROK (coro))
926	coro = SvRV (coro);
927
928	stash = SvSTASH (coro);
929	if (stash != coro_stash && stash != coro_state_stash)
930	{
931	/* very slow, but rare, check */
932	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
933	croak ("Coro::State object required");
934	}
935
936	mg = CORO_MAGIC (coro);
937	return (struct coro *)mg->mg_ptr;
938	}
939
940	static void	1152	static void
941	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)
942	{	1154	{
943	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
944	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
945	}	1158	}
946		1159
947	static void	1160	static void
948	api_transfer (SV *prev_sv, SV *next_sv)	1161	api_transfer (SV *prev_sv, SV *next_sv)
949	{	1162	{
		1163	dTHX;
950	struct transfer_args ta;	1164	struct transfer_args ta;
951		1165
952	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
953	TRANSFER (ta);	1167	TRANSFER (ta);
954	}	1168	}
955		1169
956	static int
957	api_save (SV *coro_sv, int new_save)
958	{
959	struct coro *coro = SvSTATE (coro_sv);
960	int old_save = coro->save;
961
962	if (new_save >= 0)
963	coro->save = new_save;
964
965	return old_save;
966	}
967
968	/** Coro ********************************************************************/	1170	/** Coro ********************************************************************/
969		1171
970	static void	1172	static void
971	coro_enq (SV *coro_sv)	1173	coro_enq (pTHX_ SV *coro_sv)
972	{	1174	{
973	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1175	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
974	}	1176	}
975		1177
976	static SV *	1178	static SV *
977	coro_deq (int min_prio)	1179	coro_deq (pTHX_ int min_prio)
978	{	1180	{
979	int prio = PRIO_MAX - PRIO_MIN;	1181	int prio = PRIO_MAX - PRIO_MIN;
980		1182
981	min_prio -= PRIO_MIN;	1183	min_prio -= PRIO_MIN;
982	if (min_prio < 0)	1184	if (min_prio < 0)
…		…
990	}	1192	}
991		1193
992	static int	1194	static int
993	api_ready (SV *coro_sv)	1195	api_ready (SV *coro_sv)
994	{	1196	{
		1197	dTHX;
995	struct coro *coro;	1198	struct coro *coro;
996		1199
997	if (SvROK (coro_sv))	1200	if (SvROK (coro_sv))
998	coro_sv = SvRV (coro_sv);	1201	coro_sv = SvRV (coro_sv);
999		1202
…		…
1003	return 0;	1206	return 0;
1004		1207
1005	coro->flags |= CF_READY;	1208	coro->flags |= CF_READY;
1006		1209
1007	LOCK;	1210	LOCK;
1008	coro_enq (SvREFCNT_inc (coro_sv));	1211	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1009	++coro_nready;	1212	++coro_nready;
1010	UNLOCK;	1213	UNLOCK;
1011		1214
1012	return 1;	1215	return 1;
1013	}	1216	}
1014		1217
1015	static int	1218	static int
1016	api_is_ready (SV *coro_sv)	1219	api_is_ready (SV *coro_sv)
1017	{	1220	{
		1221	dTHX;
1018	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1222	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1019	}	1223	}
1020		1224
1021	static void	1225	static void
1022	prepare_schedule (struct transfer_args *ta)	1226	prepare_schedule (pTHX_ struct transfer_args *ta)
1023	{	1227	{
1024	SV *prev_sv, *next_sv;	1228	SV *prev_sv, *next_sv;
1025		1229
1026	for (;;)	1230	for (;;)
1027	{	1231	{
1028	LOCK;	1232	LOCK;
1029	next_sv = coro_deq (PRIO_MIN);	1233	next_sv = coro_deq (aTHX_ PRIO_MIN);
1030		1234
1031	/* nothing to schedule: call the idle handler */	1235	/* nothing to schedule: call the idle handler */
1032	if (!next_sv)	1236	if (!next_sv)
1033	{	1237	{
1034	dSP;	1238	dSP;
…		…
1062	break;	1266	break;
1063	}	1267	}
1064		1268
1065	/* free this only after the transfer */	1269	/* free this only after the transfer */
1066	prev_sv = SvRV (coro_current);	1270	prev_sv = SvRV (coro_current);
1067	SvRV_set (coro_current, next_sv);
1068	ta->prev = SvSTATE (prev_sv);	1271	ta->prev = SvSTATE (prev_sv);
1069		1272	TRANSFER_CHECK (*ta);
1070	assert (ta->next->flags & CF_READY);	1273	assert (ta->next->flags & CF_READY);
1071	ta->next->flags &= ~CF_READY;	1274	ta->next->flags &= ~CF_READY;
		1275	SvRV_set (coro_current, next_sv);
1072		1276
1073	LOCK;	1277	LOCK;
1074	free_coro_mortal ();	1278	free_coro_mortal (aTHX);
1075	coro_mortal = prev_sv;	1279	coro_mortal = prev_sv;
1076	UNLOCK;	1280	UNLOCK;
1077	}	1281	}
1078		1282
1079	static void	1283	static void
1080	prepare_cede (struct transfer_args *ta)	1284	prepare_cede (pTHX_ struct transfer_args *ta)
1081	{	1285	{
1082	api_ready (coro_current);	1286	api_ready (coro_current);
1083	prepare_schedule (ta);	1287	prepare_schedule (aTHX_ ta);
1084	}	1288	}
1085		1289
1086	static int	1290	static int
1087	prepare_cede_notself (struct transfer_args *ta)	1291	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1088	{	1292	{
1089	if (coro_nready)	1293	if (coro_nready)
1090	{	1294	{
1091	SV *prev = SvRV (coro_current);	1295	SV *prev = SvRV (coro_current);
1092	prepare_schedule (ta);	1296	prepare_schedule (aTHX_ ta);
1093	api_ready (prev);	1297	api_ready (prev);
1094	return 1;	1298	return 1;
1095	}	1299	}
1096	else	1300	else
1097	return 0;	1301	return 0;
1098	}	1302	}
1099		1303
1100	static void	1304	static void
1101	api_schedule (void)	1305	api_schedule (void)
1102	{	1306	{
		1307	dTHX;
1103	struct transfer_args ta;	1308	struct transfer_args ta;
1104		1309
1105	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
1106	TRANSFER (ta);	1311	TRANSFER (ta);
1107	}	1312	}
1108		1313
1109	static int	1314	static int
1110	api_cede (void)	1315	api_cede (void)
1111	{	1316	{
		1317	dTHX;
1112	struct transfer_args ta;	1318	struct transfer_args ta;
1113		1319
1114	prepare_cede (&ta);	1320	prepare_cede (aTHX_ &ta);
1115		1321
1116	if (ta.prev != ta.next)	1322	if (ta.prev != ta.next)
1117	{	1323	{
1118	TRANSFER (ta);	1324	TRANSFER (ta);
1119	return 1;	1325	return 1;
…		…
1123	}	1329	}
1124		1330
1125	static int	1331	static int
1126	api_cede_notself (void)	1332	api_cede_notself (void)
1127	{	1333	{
		1334	dTHX;
1128	struct transfer_args ta;	1335	struct transfer_args ta;
1129		1336
1130	if (prepare_cede_notself (&ta))	1337	if (prepare_cede_notself (aTHX_ &ta))
1131	{	1338	{
1132	TRANSFER (ta);	1339	TRANSFER (ta);
1133	return 1;	1340	return 1;
1134	}	1341	}
1135	else	1342	else
1136	return 0;	1343	return 0;
1137	}	1344	}
1138		1345
		1346	static void
		1347	api_trace (SV *coro_sv, int flags)
		1348	{
		1349	dTHX;
		1350	struct coro *coro = SvSTATE (coro_sv);
		1351
		1352	if (flags & CC_TRACE)
		1353	{
		1354	if (!coro->cctx)
		1355	coro->cctx = cctx_new ();
		1356	else if (!(coro->cctx->flags & CC_TRACE))
		1357	croak ("cannot enable tracing on coroutine with custom stack");
		1358
		1359	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1360	}
		1361	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1362	{
		1363	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1364
		1365	if (coro->flags & CF_RUNNING)
		1366	PL_runops = RUNOPS_DEFAULT;
		1367	else
		1368	coro->runops = RUNOPS_DEFAULT;
		1369	}
		1370	}
		1371
1139	MODULE = Coro::State PACKAGE = Coro::State	1372	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1140		1373
1141	PROTOTYPES: DISABLE	1374	PROTOTYPES: DISABLE
1142		1375
1143	BOOT:	1376	BOOT:
1144	{	1377	{
1145	#ifdef USE_ITHREADS	1378	#ifdef USE_ITHREADS
1146	MUTEX_INIT (&coro_mutex);	1379	MUTEX_INIT (&coro_mutex);
1147	#endif	1380	#endif
1148	BOOT_PAGESIZE;	1381	BOOT_PAGESIZE;
1149		1382
		1383	irsgv = gv_fetchpv ("/" , GV_ADD, SVt_PV);
		1384	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD, SVt_PVIO);
		1385
1150	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1386	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1151		1387
		1388	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1389	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1152	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1390	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1153	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1154	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1155	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1156	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1391	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1157		1392
1158	main_mainstack = PL_mainstack;	1393	main_mainstack = PL_mainstack;
		1394	main_top_env = PL_top_env;
		1395
		1396	while (main_top_env->je_prev)
		1397	main_top_env = main_top_env->je_prev;
1159		1398
1160	coroapi.ver = CORO_API_VERSION;	1399	coroapi.ver = CORO_API_VERSION;
1161	coroapi.transfer = api_transfer;	1400	coroapi.transfer = api_transfer;
1162		1401
1163	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1402	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1170	struct coro *coro;	1409	struct coro *coro;
1171	HV *hv;	1410	HV *hv;
1172	int i;	1411	int i;
1173		1412
1174	Newz (0, coro, 1, struct coro);	1413	Newz (0, coro, 1, struct coro);
1175	coro->args = newAV ();	1414	coro->args = newAV ();
1176	coro->save = CORO_SAVE_ALL;
1177	coro->flags = CF_NEW;	1415	coro->flags = CF_NEW;
1178		1416
		1417	if (coro_first) coro_first->prev = coro;
		1418	coro->next = coro_first;
		1419	coro_first = coro;
		1420
1179	hv = newHV ();	1421	coro->hv = hv = newHV ();
1180	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1422	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1181	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1423	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1182		1424
1183	for (i = 1; i < items; i++)	1425	for (i = 1; i < items; i++)
1184	av_push (coro->args, newSVsv (ST (i)));	1426	av_push (coro->args, newSVsv (ST (i)));
1185	}	1427	}
1186	OUTPUT:	1428	OUTPUT:
1187	RETVAL	1429	RETVAL
1188		1430
1189	int	1431	# these not obviously related functions are all rolled into the same xs
1190	save (SV *coro, int new_save = -1)	1432	# function to increase chances that they all will call transfer with the same
1191	CODE:	1433	# stack offset
1192	RETVAL = api_save (coro, new_save);
1193	OUTPUT:
1194	RETVAL
1195
1196	void	1434	void
1197	_set_stacklevel (...)	1435	_set_stacklevel (...)
1198	ALIAS:	1436	ALIAS:
1199	Coro::State::transfer = 1	1437	Coro::State::transfer = 1
1200	Coro::schedule = 2	1438	Coro::schedule = 2
…		…
1213		1451
1214	case 1:	1452	case 1:
1215	if (items != 2)	1453	if (items != 2)
1216	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1454	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1217		1455
1218	prepare_transfer (&ta, ST (0), ST (1));	1456	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1219	break;	1457	break;
1220		1458
1221	case 2:	1459	case 2:
1222	prepare_schedule (&ta);	1460	prepare_schedule (aTHX_ &ta);
1223	break;	1461	break;
1224		1462
1225	case 3:	1463	case 3:
1226	prepare_cede (&ta);	1464	prepare_cede (aTHX_ &ta);
1227	break;	1465	break;
1228		1466
1229	case 4:	1467	case 4:
1230	if (!prepare_cede_notself (&ta))	1468	if (!prepare_cede_notself (aTHX_ &ta))
1231	XSRETURN_EMPTY;	1469	XSRETURN_EMPTY;
1232		1470
1233	break;	1471	break;
1234	}	1472	}
1235		1473
…		…
1241	}	1479	}
1242		1480
1243	bool	1481	bool
1244	_destroy (SV *coro_sv)	1482	_destroy (SV *coro_sv)
1245	CODE:	1483	CODE:
1246	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1484	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1247	OUTPUT:	1485	OUTPUT:
1248	RETVAL	1486	RETVAL
1249		1487
1250	void	1488	void
1251	_exit (code)	1489	_exit (code)
…		…
1275	CODE:	1513	CODE:
1276	RETVAL = cctx_idle;	1514	RETVAL = cctx_idle;
1277	OUTPUT:	1515	OUTPUT:
1278	RETVAL	1516	RETVAL
1279		1517
		1518	void
		1519	list ()
		1520	PPCODE:
		1521	{
		1522	struct coro *coro;
		1523	for (coro = coro_first; coro; coro = coro->next)
		1524	if (coro->hv)
		1525	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1526	}
		1527
		1528	void
		1529	call (Coro::State coro, SV *coderef)
		1530	ALIAS:
		1531	eval = 1
		1532	CODE:
		1533	{
		1534	if (coro->mainstack)
		1535	{
		1536	struct coro temp;
		1537	Zero (&temp, 1, struct coro);
		1538
		1539	if (!(coro->flags & CF_RUNNING))
		1540	{
		1541	save_perl (aTHX_ &temp);
		1542	load_perl (aTHX_ coro);
		1543	}
		1544
		1545	{
		1546	dSP;
		1547	ENTER;
		1548	SAVETMPS;
		1549	PUSHMARK (SP);
		1550	PUTBACK;
		1551	if (ix)
		1552	eval_sv (coderef, 0);
		1553	else
		1554	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1555	SPAGAIN;
		1556	FREETMPS;
		1557	LEAVE;
		1558	PUTBACK;
		1559	}
		1560
		1561	if (!(coro->flags & CF_RUNNING))
		1562	{
		1563	save_perl (aTHX_ coro);
		1564	load_perl (aTHX_ &temp);
		1565	}
		1566	}
		1567	}
		1568
		1569	SV *
		1570	is_ready (Coro::State coro)
		1571	PROTOTYPE: $
		1572	ALIAS:
		1573	is_ready = CF_READY
		1574	is_running = CF_RUNNING
		1575	is_new = CF_NEW
		1576	is_destroyed = CF_DESTROYED
		1577	CODE:
		1578	RETVAL = boolSV (coro->flags & ix);
		1579	OUTPUT:
		1580	RETVAL
		1581
		1582	void
		1583	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1584
		1585	SV *
		1586	has_stack (Coro::State coro)
		1587	PROTOTYPE: $
		1588	CODE:
		1589	RETVAL = boolSV (!!coro->cctx);
		1590	OUTPUT:
		1591	RETVAL
		1592
		1593	int
		1594	is_traced (Coro::State coro)
		1595	PROTOTYPE: $
		1596	CODE:
		1597	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	IV
		1602	rss (Coro::State coro)
		1603	PROTOTYPE: $
		1604	ALIAS:
		1605	usecount = 1
		1606	CODE:
		1607	switch (ix)
		1608	{
		1609	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1610	case 1: RETVAL = coro->usecount; break;
		1611	}
		1612	OUTPUT:
		1613	RETVAL
		1614
		1615
1280	MODULE = Coro::State PACKAGE = Coro	1616	MODULE = Coro::State PACKAGE = Coro
1281		1617
1282	BOOT:	1618	BOOT:
1283	{	1619	{
1284	int i;	1620	int i;
		1621
		1622	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1623	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1624	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1625
		1626	coro_current = get_sv ("Coro::current", FALSE);
		1627	SvREADONLY_on (coro_current);
1285		1628
1286	coro_stash = gv_stashpv ("Coro", TRUE);	1629	coro_stash = gv_stashpv ("Coro", TRUE);
1287		1630
1288	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1631	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1289	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1632	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1290	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1633	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1291	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1634	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1292	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1635	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1293	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1636	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1294		1637
1295	coro_current = get_sv ("Coro::current", FALSE);
1296	SvREADONLY_on (coro_current);
1297
1298	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1638	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1299	coro_ready[i] = newAV ();	1639	coro_ready[i] = newAV ();
1300		1640
1301	{	1641	{
1302	SV *sv = perl_get_sv("Coro::API", 1);	1642	SV *sv = perl_get_sv("Coro::API", 1);
1303		1643
1304	coroapi.schedule = api_schedule;	1644	coroapi.schedule = api_schedule;
1305	coroapi.save = api_save;
1306	coroapi.cede = api_cede;	1645	coroapi.cede = api_cede;
1307	coroapi.cede_notself = api_cede_notself;	1646	coroapi.cede_notself = api_cede_notself;
1308	coroapi.ready = api_ready;	1647	coroapi.ready = api_ready;
1309	coroapi.is_ready = api_is_ready;	1648	coroapi.is_ready = api_is_ready;
1310	coroapi.nready = &coro_nready;	1649	coroapi.nready = &coro_nready;
…		…
1351	CODE:	1690	CODE:
1352	RETVAL = boolSV (api_ready (self));	1691	RETVAL = boolSV (api_ready (self));
1353	OUTPUT:	1692	OUTPUT:
1354	RETVAL	1693	RETVAL
1355		1694
1356	SV *
1357	is_ready (SV *self)
1358	PROTOTYPE: $
1359	CODE:
1360	RETVAL = boolSV (api_is_ready (self));
1361	OUTPUT:
1362	RETVAL
1363
1364	int	1695	int
1365	nready (...)	1696	nready (...)
1366	PROTOTYPE:	1697	PROTOTYPE:
1367	CODE:	1698	CODE:
1368	RETVAL = coro_nready;	1699	RETVAL = coro_nready;
1369	OUTPUT:	1700	OUTPUT:
1370	RETVAL	1701	RETVAL
1371		1702
		1703	# for async_pool speedup
		1704	void
		1705	_pool_1 (SV *cb)
		1706	CODE:
		1707	{
		1708	struct coro *coro = SvSTATE (coro_current);
		1709	HV *hv = (HV *)SvRV (coro_current);
		1710	AV *defav = GvAV (PL_defgv);
		1711	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1712	AV *invoke_av;
		1713	int i, len;
		1714
		1715	if (!invoke)
		1716	croak ("\3terminate\2\n");
		1717
		1718	SvREFCNT_dec (coro->saved_deffh);
		1719	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1720
		1721	hv_store (hv, "desc", sizeof ("desc") - 1,
		1722	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1723
		1724	invoke_av = (AV *)SvRV (invoke);
		1725	len = av_len (invoke_av);
		1726
		1727	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1728
		1729	if (len > 0)
		1730	{
		1731	av_fill (defav, len - 1);
		1732	for (i = 0; i < len; ++i)
		1733	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1734	}
		1735
		1736	SvREFCNT_dec (invoke);
		1737	}
		1738
		1739	void
		1740	_pool_2 (SV *cb)
		1741	CODE:
		1742	{
		1743	struct coro *coro = SvSTATE (coro_current);
		1744
		1745	sv_setsv (cb, &PL_sv_undef);
		1746
		1747	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1748	coro->saved_deffh = 0;
		1749
		1750	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1751	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1752	croak ("\3terminate\2\n");
		1753
		1754	av_clear (GvAV (PL_defgv));
		1755	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1756	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1757
		1758	coro->prio = 0;
		1759
		1760	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1761	api_trace (coro_current, 0);
		1762
		1763	av_push (av_async_pool, newSVsv (coro_current));
		1764	}
		1765
		1766
1372	MODULE = Coro::State PACKAGE = Coro::AIO	1767	MODULE = Coro::State PACKAGE = Coro::AIO
1373		1768
1374	SV *	1769	SV *
1375	_get_state ()	1770	_get_state ()
1376	CODE:	1771	CODE:

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