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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.198 by root, Sun Oct 7 03:58:37 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
…		…
75	/* 5.8.7 */	76	/* 5.8.7 */
76	#ifndef SvRV_set	77	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	78	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	79	#endif
79		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	90	# undef CORO_STACKGUARD
82	#endif	91	#endif
83		92
84	#ifndef CORO_STACKGUARD	93	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	97	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	99	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	100	#endif
92		101
93	/* The next macro should declare a variable stacklevel that contains and approximation	102	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	103	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
98		106
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		108
101	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	113	#else
105	# define attribute(x)	114	# define attribute(x)
106	# define BARRIER	115	# define BARRIER
		116	# define expect(expr,value) (expr)
107	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
108		121
109	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
110		123
111	#include "CoroAPI.h"	124	#include "CoroAPI.h"
112		125
…		…
133	static AV *main_mainstack; /* used to differentiate between $main and others */	146	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	147	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	148	static HV *coro_state_stash, *coro_stash;
136	static SV *coro_mortal; /* will be freed after next transfer */	149	static SV *coro_mortal; /* will be freed after next transfer */
137		150
		151	static GV *irsgv; /* $/ */
		152	static GV *stdoutgv; /* *STDOUT */
		153
		154	/* async_pool helper stuff */
		155	static SV *sv_pool_rss;
		156	static SV *sv_pool_size;
		157	static AV *av_async_pool;
		158
138	static struct coro_cctx *cctx_first;	159	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	160	static int cctx_count, cctx_idle;
		161
		162	enum {
		163	CC_MAPPED = 0x01,
		164	CC_NOREUSE = 0x02, /* throw this away after tracing */
		165	CC_TRACE = 0x04,
		166	CC_TRACE_SUB = 0x08, /* trace sub calls */
		167	CC_TRACE_LINE = 0x10, /* trace each statement */
		168	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		169	};
140		170
141	/* this is a structure representing a c-level coroutine */	171	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	172	typedef struct coro_cctx {
143	struct coro_cctx *next;	173	struct coro_cctx *next;
144		174
…		…
153	coro_context cctx;	183	coro_context cctx;
154		184
155	#if CORO_USE_VALGRIND	185	#if CORO_USE_VALGRIND
156	int valgrind_id;	186	int valgrind_id;
157	#endif	187	#endif
158	char inuse, mapped;	188	unsigned char flags;
159	} coro_cctx;	189	} coro_cctx;
160		190
161	enum {	191	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	192	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	193	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	194	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	195	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	196	};
167		197
		198	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		199	typedef struct {
		200	SV *defsv;
		201	AV *defav;
		202	SV *errsv;
		203	SV *irsgv;
		204	#define VAR(name,type) type name;
		205	# include "state.h"
		206	#undef VAR
		207	} perl_slots;
		208
		209	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		210
168	/* this is a structure representing a perl-level coroutine */	211	/* this is a structure representing a perl-level coroutine */
169	struct coro {	212	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	213	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	214	coro_cctx *cctx;
172		215
		216	/* process data */
		217	AV *mainstack;
		218	perl_slots *slot; /* basically the saved sp */
		219
173	/* data associated with this coroutine (initial args) */	220	/* data associated with this coroutine (initial args) */
174	AV *args;	221	AV *args;
175	int refcnt;	222	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	223	int flags; /* CF_ flags */
178		224
179	/* optionally saved, might be zero */	225	/* statistics */
180	AV *defav; /* @_ */	226	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		227
191	/* coro process data */	228	/* coro process data */
192	int prio;	229	int prio;
		230	SV *throw;
		231
		232	/* async_pool */
		233	SV *saved_deffh;
193		234
194	/* linked list */	235	/* linked list */
195	struct coro *next, *prev;	236	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */	237	HV *hv; /* the perl hash associated with this coro, if any */
197	};	238	};
…		…
210		251
211	/* for Coro.pm */	252	/* for Coro.pm */
212	static SV *coro_current;	253	static SV *coro_current;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	254	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	255	static int coro_nready;
215	static struct coro *first;	256	static struct coro *coro_first;
216		257
217	/** lowlevel stuff **********************************************************/	258	/** lowlevel stuff **********************************************************/
218		259
219	static AV *	260	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	261	coro_clone_padlist (pTHX_ CV *cv)
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	327	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	328	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	329	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	330	: 0
290		331
		332	static struct coro *
		333	SvSTATE_ (pTHX_ SV *coro)
		334	{
		335	HV *stash;
		336	MAGIC *mg;
		337
		338	if (SvROK (coro))
		339	coro = SvRV (coro);
		340
		341	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		342	croak ("Coro::State object required");
		343
		344	stash = SvSTASH (coro);
		345	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		346	{
		347	/* very slow, but rare, check */
		348	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		349	croak ("Coro::State object required");
		350	}
		351
		352	mg = CORO_MAGIC (coro);
		353	return (struct coro *)mg->mg_ptr;
		354	}
		355
		356	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		357
291	/* the next two functions merely cache the padlists */	358	/* the next two functions merely cache the padlists */
292	static void	359	static void
293	get_padlist (pTHX_ CV *cv)	360	get_padlist (pTHX_ CV *cv)
294	{	361	{
295	MAGIC *mg = CORO_MAGIC (cv);	362	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	363	AV *av;
297		364
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	365	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	366	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	367	else
301	{	368	{
302	#if CORO_PREFER_PERL_FUNCTIONS	369	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	370	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	382	put_padlist (pTHX_ CV *cv)
316	{	383	{
317	MAGIC *mg = CORO_MAGIC (cv);	384	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	385	AV *av;
319		386
320	if (!mg)	387	if (expect_false (!mg))
321	{	388	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	389	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	390	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	391	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	392	mg->mg_obj = (SV *)newAV ();
326	}	393	}
327		394
328	av = (AV *)mg->mg_obj;	395	av = (AV *)mg->mg_obj;
329		396
330	if (AvFILLp (av) >= AvMAX (av))	397	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	398	av_extend (av, AvMAX (av) + 1);
332		399
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	400	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	401	}
335		402
336	/** load & save, init *******************************************************/	403	/** load & save, init *******************************************************/
337		404
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342
343	static void	405	static void
344	load_perl (pTHX_ Coro__State c)	406	load_perl (pTHX_ Coro__State c)
345	{	407	{
		408	perl_slots *slot = c->slot;
		409	c->slot = 0;
		410
		411	PL_mainstack = c->mainstack;
		412
		413	GvSV (PL_defgv) = slot->defsv;
		414	GvAV (PL_defgv) = slot->defav;
		415	GvSV (PL_errgv) = slot->errsv;
		416	GvSV (irsgv) = slot->irsgv;
		417
346	#define VAR(name,type) PL_ ## name = c->name;	418	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	419	# include "state.h"
348	#undef VAR	420	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		421
370	{	422	{
371	dSP;	423	dSP;
		424
372	CV *cv;	425	CV *cv;
373		426
374	/* now do the ugly restore mess */	427	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	428	while (expect_true (cv = (CV *)POPs))
376	{	429	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	430	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	431	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	432	CvPADLIST (cv) = (AV *)POPs;
380	}	433	}
…		…
395	/*	448	/*
396	* the worst thing you can imagine happens first - we have to save	449	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	450	* (and reinitialize) all cv's in the whole callchain :(
398	*/	451	*/
399		452
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	453	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	454	/* this loop was inspired by pp_caller */
403	for (;;)	455	for (;;)
404	{	456	{
405	while (cxix >= 0)	457	while (expect_true (cxix >= 0))
406	{	458	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	459	PERL_CONTEXT *cx = &ccstk[cxix--];
408		460
409	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	461	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410	{	462	{
411	CV *cv = cx->blk_sub.cv;	463	CV *cv = cx->blk_sub.cv;
412		464
413	if (CvDEPTH (cv))	465	if (expect_true (CvDEPTH (cv)))
414	{	466	{
415	EXTEND (SP, 3);	467	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	468	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	469	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	470	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	473	get_padlist (aTHX_ cv);
422	}	474	}
423	}	475	}
424	}	476	}
425		477
426	if (top_si->si_type == PERLSI_MAIN)	478	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	479	break;
428		480
429	top_si = top_si->si_prev;	481	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	482	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	483	cxix = top_si->si_cxix;
432	}	484	}
433		485
434	PUTBACK;	486	PUTBACK;
435	}	487	}
436		488
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	489	/* allocate some space on the context stack for our purposes */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	490	{
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	491	/* we manually unroll here, as usually 2 slots is enough */
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	492	int i;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	493	if (SLOT_COUNT >= 1) CXINC;
		494	if (SLOT_COUNT >= 2) CXINC;
		495	if (SLOT_COUNT >= 3) CXINC;
		496	for (i = 3; i < SLOT_COUNT; ++i)
		497	CXINC;
442		498
		499	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		500	}
		501
		502	c->mainstack = PL_mainstack;
		503
		504	{
		505	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		506
		507	slot->defav = GvAV (PL_defgv);
		508	slot->defsv = DEFSV;
		509	slot->errsv = ERRSV;
		510	slot->irsgv = GvSV (irsgv);
		511
443	#define VAR(name,type)c->name = PL_ ## name;	512	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	513	# include "state.h"
445	#undef VAR	514	#undef VAR
		515	}
446	}	516	}
447		517
448	/*	518	/*
449	* allocate various perl stacks. This is an exact copy	519	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	520	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	525	# define coro_init_stacks init_stacks
456	#else	526	#else
457	static void	527	static void
458	coro_init_stacks (pTHX)	528	coro_init_stacks (pTHX)
459	{	529	{
460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	530	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	531	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	532	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	533	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		534
465	PL_stack_base = AvARRAY(PL_curstack);	535	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	536	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	537	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		538
469	New(50,PL_tmps_stack,128,SV*);	539	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	540	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	541	PL_tmps_ix = -1;
472	PL_tmps_max = 128;	542	PL_tmps_max = 32;
473		543
474	New(54,PL_markstack,32,I32);	544	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	545	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 32;	546	PL_markstack_max = PL_markstack + 16;
477		547
478	#ifdef SET_MARK_OFFSET	548	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	549	SET_MARK_OFFSET;
480	#endif	550	#endif
481		551
482	New(54,PL_scopestack,32,I32);	552	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	553	PL_scopestack_ix = 0;
484	PL_scopestack_max = 32;	554	PL_scopestack_max = 8;
485		555
486	New(54,PL_savestack,64,ANY);	556	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	557	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	558	PL_savestack_max = 24;
489		559
490	#if !PERL_VERSION_ATLEAST (5,9,0)	560	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,16,OP*);	561	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	562	PL_retstack_ix = 0;
493	PL_retstack_max = 16;	563	PL_retstack_max = 4;
494	#endif	564	#endif
495	}	565	}
496	#endif	566	#endif
497		567
498	/*	568	/*
499	* destroy the stacks, the callchain etc...	569	* destroy the stacks, the callchain etc...
500	*/	570	*/
501	static void	571	static void
502	coro_destroy_stacks (pTHX)	572	coro_destroy_stacks (pTHX)
503	{	573	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	574	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	575	PL_curstackinfo = PL_curstackinfo->si_next;
523		576
524	while (PL_curstackinfo)	577	while (PL_curstackinfo)
525	{	578	{
…		…
541	Safefree (PL_retstack);	594	Safefree (PL_retstack);
542	#endif	595	#endif
543	}	596	}
544		597
545	static size_t	598	static size_t
546	coro_rss (struct coro *coro)	599	coro_rss (pTHX_ struct coro *coro)
547	{	600	{
548	size_t rss = sizeof (coro);	601	size_t rss = sizeof (*coro);
549		602
550	if (coro->mainstack)	603	if (coro->mainstack)
551	{	604	{
		605	perl_slots tmp_slot;
		606	perl_slots *slot;
		607
		608	if (coro->flags & CF_RUNNING)
		609	{
		610	slot = &tmp_slot;
		611
		612	#define VAR(name,type) slot->name = PL_ ## name;
		613	# include "state.h"
		614	#undef VAR
		615	}
		616	else
		617	slot = coro->slot;
		618
552	rss += sizeof (coro->curstackinfo);	619	rss += sizeof (slot->curstackinfo);
553	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
554	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	620	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	621	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
557
558	rss += coro->tmps_max * sizeof (SV *);	622	rss += slot->tmps_max * sizeof (SV *);
559
560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	623	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
561
562	rss += coro->scopestack_max * sizeof (I32);	624	rss += slot->scopestack_max * sizeof (I32);
563
564	rss += coro->savestack_max * sizeof (ANY);	625	rss += slot->savestack_max * sizeof (ANY);
565		626
566	#if !PERL_VERSION_ATLEAST (5,9,0)	627	#if !PERL_VERSION_ATLEAST (5,9,0)
567	rss += coro->retstack_max * sizeof (OP *);	628	rss += slot->retstack_max * sizeof (OP *);
568	#endif	629	#endif
569	}	630	}
570		631
571	return rss;	632	return rss;
572	}	633	}
573		634
574	/** coroutine stack handling ************************************************/	635	/** coroutine stack handling ************************************************/
575		636
576	static void	637	static void
577	setup_coro (pTHX_ struct coro *coro)	638	coro_setup (pTHX_ struct coro *coro)
578	{	639	{
579	/*	640	/*
580	* emulate part of the perl startup here.	641	* emulate part of the perl startup here.
581	*/	642	*/
582	coro_init_stacks (aTHX);	643	coro_init_stacks (aTHX);
583		644
		645	PL_runops = RUNOPS_DEFAULT;
584	PL_curcop = &PL_compiling;	646	PL_curcop = &PL_compiling;
585	PL_in_eval = EVAL_NULL;	647	PL_in_eval = EVAL_NULL;
586	PL_comppad = 0;	648	PL_comppad = 0;
587	PL_curpm = 0;	649	PL_curpm = 0;
		650	PL_curpad = 0;
588	PL_localizing = 0;	651	PL_localizing = 0;
589	PL_dirty = 0;	652	PL_dirty = 0;
590	PL_restartop = 0;	653	PL_restartop = 0;
		654	PL_diehook = 0;
		655	PL_warnhook = 0;
		656
		657	GvSV (PL_defgv) = newSV (0);
		658	GvAV (PL_defgv) = coro->args; coro->args = 0;
		659	GvSV (PL_errgv) = newSV (0);
		660	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		661	PL_rs = newSVsv (GvSV (irsgv));
		662	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
591		663
592	{	664	{
593	dSP;	665	dSP;
594	LOGOP myop;	666	LOGOP myop;
595		667
596	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599	Zero (&myop, 1, LOGOP);	668	Zero (&myop, 1, LOGOP);
600	myop.op_next = Nullop;	669	myop.op_next = Nullop;
601	myop.op_flags = OPf_WANT_VOID;	670	myop.op_flags = OPf_WANT_VOID;
602		671
603	PUSHMARK (SP);	672	PUSHMARK (SP);
604	XPUSHs (av_shift (GvAV (PL_defgv)));	673	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605	PUTBACK;	674	PUTBACK;
606	PL_op = (OP *)&myop;	675	PL_op = (OP *)&myop;
607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608	SPAGAIN;	677	SPAGAIN;
609	}	678	}
610		679
611	ENTER; /* necessary e.g. for dounwind */	680	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		681	}
		682
		683	static void
		684	coro_destroy (pTHX_ struct coro *coro)
		685	{
		686	if (!IN_DESTRUCT)
		687	{
		688	/* restore all saved variables and stuff */
		689	LEAVE_SCOPE (0);
		690	assert (PL_tmps_floor == -1);
		691
		692	/* free all temporaries */
		693	FREETMPS;
		694	assert (PL_tmps_ix == -1);
		695
		696	/* unwind all extra stacks */
		697	POPSTACK_TO (PL_mainstack);
		698
		699	/* unwind main stack */
		700	dounwind (-1);
		701	}
		702
		703	SvREFCNT_dec (GvSV (PL_defgv));
		704	SvREFCNT_dec (GvAV (PL_defgv));
		705	SvREFCNT_dec (GvSV (PL_errgv));
		706	SvREFCNT_dec (PL_defoutgv);
		707	SvREFCNT_dec (PL_rs);
		708	SvREFCNT_dec (GvSV (irsgv));
		709
		710	SvREFCNT_dec (PL_diehook);
		711	SvREFCNT_dec (PL_warnhook);
		712
		713	SvREFCNT_dec (coro->saved_deffh);
		714	SvREFCNT_dec (coro->throw);
		715
		716	coro_destroy_stacks (aTHX);
612	}	717	}
613		718
614	static void	719	static void
615	free_coro_mortal (pTHX)	720	free_coro_mortal (pTHX)
616	{	721	{
617	if (coro_mortal)	722	if (expect_true (coro_mortal))
618	{	723	{
619	SvREFCNT_dec (coro_mortal);	724	SvREFCNT_dec (coro_mortal);
620	coro_mortal = 0;	725	coro_mortal = 0;
621	}	726	}
		727	}
		728
		729	static int
		730	runops_trace (pTHX)
		731	{
		732	COP *oldcop = 0;
		733	int oldcxix = -2;
		734	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		735	coro_cctx *cctx = coro->cctx;
		736
		737	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		738	{
		739	PERL_ASYNC_CHECK ();
		740
		741	if (cctx->flags & CC_TRACE_ALL)
		742	{
		743	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		744	{
		745	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		746	SV **bot, **top;
		747	AV *av = newAV (); /* return values */
		748	SV **cb;
		749	dSP;
		750
		751	GV *gv = CvGV (cx->blk_sub.cv);
		752	SV *fullname = sv_2mortal (newSV (0));
		753	if (isGV (gv))
		754	gv_efullname3 (fullname, gv, 0);
		755
		756	bot = PL_stack_base + cx->blk_oldsp + 1;
		757	top = cx->blk_gimme == G_ARRAY ? SP + 1
		758	: cx->blk_gimme == G_SCALAR ? bot + 1
		759	: bot;
		760
		761	av_extend (av, top - bot);
		762	while (bot < top)
		763	av_push (av, SvREFCNT_inc (*bot++));
		764
		765	PL_runops = RUNOPS_DEFAULT;
		766	ENTER;
		767	SAVETMPS;
		768	EXTEND (SP, 3);
		769	PUSHMARK (SP);
		770	PUSHs (&PL_sv_no);
		771	PUSHs (fullname);
		772	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		773	PUTBACK;
		774	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		775	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		776	SPAGAIN;
		777	FREETMPS;
		778	LEAVE;
		779	PL_runops = runops_trace;
		780	}
		781
		782	if (oldcop != PL_curcop)
		783	{
		784	oldcop = PL_curcop;
		785
		786	if (PL_curcop != &PL_compiling)
		787	{
		788	SV **cb;
		789
		790	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		791	{
		792	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		793
		794	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		795	{
		796	runops_proc_t old_runops = PL_runops;
		797	dSP;
		798	GV *gv = CvGV (cx->blk_sub.cv);
		799	SV *fullname = sv_2mortal (newSV (0));
		800
		801	if (isGV (gv))
		802	gv_efullname3 (fullname, gv, 0);
		803
		804	PL_runops = RUNOPS_DEFAULT;
		805	ENTER;
		806	SAVETMPS;
		807	EXTEND (SP, 3);
		808	PUSHMARK (SP);
		809	PUSHs (&PL_sv_yes);
		810	PUSHs (fullname);
		811	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		812	PUTBACK;
		813	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		814	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		815	SPAGAIN;
		816	FREETMPS;
		817	LEAVE;
		818	PL_runops = runops_trace;
		819	}
		820
		821	oldcxix = cxstack_ix;
		822	}
		823
		824	if (cctx->flags & CC_TRACE_LINE)
		825	{
		826	dSP;
		827
		828	PL_runops = RUNOPS_DEFAULT;
		829	ENTER;
		830	SAVETMPS;
		831	EXTEND (SP, 3);
		832	PL_runops = RUNOPS_DEFAULT;
		833	PUSHMARK (SP);
		834	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		835	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		836	PUTBACK;
		837	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		838	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		839	SPAGAIN;
		840	FREETMPS;
		841	LEAVE;
		842	PL_runops = runops_trace;
		843	}
		844	}
		845	}
		846	}
		847	}
		848
		849	TAINT_NOT;
		850	return 0;
622	}	851	}
623		852
624	/* inject a fake call to Coro::State::_cctx_init into the execution */	853	/* inject a fake call to Coro::State::_cctx_init into the execution */
625	/* _cctx_init should be careful, as it could be called at almost any time */	854	/* _cctx_init should be careful, as it could be called at almost any time */
626	/* during execution of a perl program */	855	/* during execution of a perl program */
627	static void NOINLINE	856	static void NOINLINE
628	prepare_cctx (pTHX_ coro_cctx *cctx)	857	prepare_cctx (pTHX_ coro_cctx *cctx)
629	{	858	{
630	dSP;	859	dSP;
631	LOGOP myop;	860	LOGOP myop;
		861
		862	PL_top_env = &PL_start_env;
		863
		864	if (cctx->flags & CC_TRACE)
		865	PL_runops = runops_trace;
632		866
633	Zero (&myop, 1, LOGOP);	867	Zero (&myop, 1, LOGOP);
634	myop.op_next = PL_op;	868	myop.op_next = PL_op;
635	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	869	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636		870
…		…
653	dTHX;	887	dTHX;
654		888
655	/* coro_run is the alternative tail of transfer(), so unlock here. */	889	/* coro_run is the alternative tail of transfer(), so unlock here. */
656	UNLOCK;	890	UNLOCK;
657		891
658	PL_top_env = &PL_start_env;	892	/* we now skip the entersub that lead to transfer() */
		893	PL_op = PL_op->op_next;
659		894
660	/* inject a fake subroutine call to cctx_init */	895	/* inject a fake subroutine call to cctx_init */
661	prepare_cctx (aTHX_ (coro_cctx *)arg);	896	prepare_cctx (aTHX_ (coro_cctx *)arg);
662		897
663	/* somebody or something will hit me for both perl_run and PL_restartop */	898	/* somebody or something will hit me for both perl_run and PL_restartop */
…		…
697	# if CORO_STACKGUARD	932	# if CORO_STACKGUARD
698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	933	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699	# endif	934	# endif
700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	935	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	936	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702	cctx->mapped = 1;	937	cctx->flags |= CC_MAPPED;
703	}	938	}
704	else	939	else
705	#endif	940	#endif
706	{	941	{
707	cctx->ssize = coro_stacksize * (long)sizeof (long);	942	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
734	#if CORO_USE_VALGRIND	969	#if CORO_USE_VALGRIND
735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	970	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736	#endif	971	#endif
737		972
738	#if HAVE_MMAP	973	#if HAVE_MMAP
739	if (cctx->mapped)	974	if (cctx->flags & CC_MAPPED)
740	munmap (cctx->sptr, cctx->ssize);	975	munmap (cctx->sptr, cctx->ssize);
741	else	976	else
742	#endif	977	#endif
743	Safefree (cctx->sptr);	978	Safefree (cctx->sptr);
744		979
745	Safefree (cctx);	980	Safefree (cctx);
746	}	981	}
747		982
		983	/* wether this cctx should be destructed */
		984	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		985
748	static coro_cctx *	986	static coro_cctx *
749	cctx_get (pTHX)	987	cctx_get (pTHX)
750	{	988	{
751	while (cctx_first)	989	while (expect_true (cctx_first))
752	{	990	{
753	coro_cctx *cctx = cctx_first;	991	coro_cctx *cctx = cctx_first;
754	cctx_first = cctx->next;	992	cctx_first = cctx->next;
755	--cctx_idle;	993	--cctx_idle;
756		994
757	if (cctx->ssize >= coro_stacksize)	995	if (expect_true (!CCTX_EXPIRED (cctx)))
758	return cctx;	996	return cctx;
759		997
760	cctx_destroy (cctx);	998	cctx_destroy (cctx);
761	}	999	}
762		1000
763	PL_op = PL_op->op_next;
764	return cctx_new ();	1001	return cctx_new ();
765	}	1002	}
766		1003
767	static void	1004	static void
768	cctx_put (coro_cctx *cctx)	1005	cctx_put (coro_cctx *cctx)
769	{	1006	{
770	/* free another cctx if overlimit */	1007	/* free another cctx if overlimit */
771	if (cctx_idle >= MAX_IDLE_CCTX)	1008	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
772	{	1009	{
773	coro_cctx *first = cctx_first;	1010	coro_cctx *first = cctx_first;
774	cctx_first = first->next;	1011	cctx_first = first->next;
775	--cctx_idle;	1012	--cctx_idle;
776		1013
777	assert (!first->inuse);
778	cctx_destroy (first);	1014	cctx_destroy (first);
779	}	1015	}
780		1016
781	++cctx_idle;	1017	++cctx_idle;
782	cctx->next = cctx_first;	1018	cctx->next = cctx_first;
783	cctx_first = cctx;	1019	cctx_first = cctx;
784	}	1020	}
785		1021
786	/** coroutine switching *****************************************************/	1022	/** coroutine switching *****************************************************/
787		1023
788	/* never call directly, always through the coro_state_transfer global variable */	1024	static void
		1025	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1026	{
		1027	if (expect_true (prev != next))
		1028	{
		1029	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1030	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1031
		1032	if (expect_false (next->flags & CF_RUNNING))
		1033	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1034
		1035	if (expect_false (next->flags & CF_DESTROYED))
		1036	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1037
		1038	if (
		1039	#if PERL_VERSION_ATLEAST (5,9,0)
		1040	expect_false (PL_parser)
		1041	#else
		1042	expect_false (PL_lex_state != LEX_NOTPARSING)
		1043	#endif
		1044	)
		1045	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1046	}
		1047	}
		1048
		1049	/* always use the TRANSFER macro */
789	static void NOINLINE	1050	static void NOINLINE
790	transfer (pTHX_ struct coro *prev, struct coro *next)	1051	transfer (pTHX_ struct coro *prev, struct coro *next)
791	{	1052	{
792	dSTACKLEVEL;	1053	dSTACKLEVEL;
793		1054
794	/* sometimes transfer is only called to set idle_sp */	1055	/* sometimes transfer is only called to set idle_sp */
795	if (!next)	1056	if (expect_false (!next))
796	{	1057	{
797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1058	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
798	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1059	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799	}	1060	}
800	else if (prev != next)	1061	else if (expect_true (prev != next))
801	{	1062	{
802	coro_cctx *prev__cctx;	1063	coro_cctx *prev__cctx;
803		1064
804	if (prev->flags & CF_NEW)	1065	if (expect_false (prev->flags & CF_NEW))
805	{	1066	{
806	/* create a new empty context */	1067	/* create a new empty context */
807	Newz (0, prev->cctx, 1, coro_cctx);	1068	Newz (0, prev->cctx, 1, coro_cctx);
808	prev->cctx->inuse = 1;
809	prev->flags &= ~CF_NEW;	1069	prev->flags &= ~CF_NEW;
810	prev->flags |= CF_RUNNING;	1070	prev->flags |= CF_RUNNING;
811	}	1071	}
812		1072
813	/*TODO: must not croak here */
814	if (!prev->flags & CF_RUNNING)
815	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
816
817	if (next->flags & CF_RUNNING)
818	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
819
820	if (next->flags & CF_DESTROYED)
821	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
822
823	prev->flags &= ~CF_RUNNING;	1073	prev->flags &= ~CF_RUNNING;
824	next->flags |= CF_RUNNING;	1074	next->flags |= CF_RUNNING;
825		1075
826	LOCK;	1076	LOCK;
827		1077
828	if (next->flags & CF_NEW)	1078	if (expect_false (next->flags & CF_NEW))
829	{	1079	{
830	/* need to start coroutine */	1080	/* need to start coroutine */
831	next->flags &= ~CF_NEW;	1081	next->flags &= ~CF_NEW;
832	/* first get rid of the old state */	1082	/* first get rid of the old state */
833	save_perl (aTHX_ prev);	1083	save_perl (aTHX_ prev);
834	/* setup coroutine call */	1084	/* setup coroutine call */
835	setup_coro (aTHX_ next);	1085	coro_setup (aTHX_ next);
836	/* need a new stack */
837	assert (!next->cctx);
838	}	1086	}
839	else	1087	else
840	{	1088	{
841	/* coroutine already started */	1089	/* coroutine already started */
842	save_perl (aTHX_ prev);	1090	save_perl (aTHX_ prev);
…		…
844	}	1092	}
845		1093
846	prev__cctx = prev->cctx;	1094	prev__cctx = prev->cctx;
847		1095
848	/* possibly "free" the cctx */	1096	/* possibly "free" the cctx */
849	if (prev__cctx->idle_sp == STACKLEVEL)	1097	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850	{	1098	{
851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1099	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
852	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1100	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853		1101
854	prev->cctx = 0;	1102	prev->cctx = 0;
855		1103
		1104	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1105	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1106	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1107	next->cctx = cctx_get (aTHX);
		1108
856	cctx_put (prev__cctx);	1109	cctx_put (prev__cctx);
857	prev__cctx->inuse = 0;
858	}	1110	}
859		1111
		1112	++next->usecount;
		1113
860	if (!next->cctx)	1114	if (expect_true (!next->cctx))
861	{
862	next->cctx = cctx_get (aTHX);	1115	next->cctx = cctx_get (aTHX);
863	assert (!next->cctx->inuse);
864	next->cctx->inuse = 1;
865	}
866		1116
867	if (prev__cctx != next->cctx)	1117	if (expect_false (prev__cctx != next->cctx))
868	{	1118	{
869	prev__cctx->top_env = PL_top_env;	1119	prev__cctx->top_env = PL_top_env;
870	PL_top_env = next->cctx->top_env;	1120	PL_top_env = next->cctx->top_env;
871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1121	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872	}	1122	}
873		1123
874	free_coro_mortal (aTHX);	1124	free_coro_mortal (aTHX);
875	UNLOCK;	1125	UNLOCK;
		1126
		1127	if (expect_false (prev->throw || next->throw))
		1128	{
		1129	struct coro *coro = SvSTATE (coro_current);
		1130
		1131	if (coro->throw)
		1132	{
		1133	SV *exception = coro->throw;
		1134	coro->throw = 0;
		1135	sv_setsv (ERRSV, exception);
		1136	croak (0);
		1137	}
		1138	}
876	}	1139	}
877	}	1140	}
878		1141
879	struct transfer_args	1142	struct transfer_args
880	{	1143	{
881	struct coro *prev, *next;	1144	struct coro *prev, *next;
882	};	1145	};
883		1146
884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1147	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1148	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885		1149
886	/** high level stuff ********************************************************/	1150	/** high level stuff ********************************************************/
887		1151
888	static int	1152	static int
889	coro_state_destroy (pTHX_ struct coro *coro)	1153	coro_state_destroy (pTHX_ struct coro *coro)
…		…
906		1170
907	if (coro->mainstack && coro->mainstack != main_mainstack)	1171	if (coro->mainstack && coro->mainstack != main_mainstack)
908	{	1172	{
909	struct coro temp;	1173	struct coro temp;
910		1174
911	assert (!(coro->flags & CF_RUNNING));
912
913	Zero (&temp, 1, struct coro);
914	temp.save = CORO_SAVE_ALL;
915
916	if (coro->flags & CF_RUNNING)	1175	if (coro->flags & CF_RUNNING)
917	croak ("FATAL: tried to destroy currently running coroutine");	1176	croak ("FATAL: tried to destroy currently running coroutine");
918		1177
919	save_perl (aTHX_ &temp);	1178	save_perl (aTHX_ &temp);
920	load_perl (aTHX_ coro);	1179	load_perl (aTHX_ coro);
921		1180
922	coro_destroy_stacks (aTHX);	1181	coro_destroy (aTHX_ coro);
923		1182
924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1183	load_perl (aTHX_ &temp);
925		1184
926	coro->mainstack = 0;	1185	coro->slot = 0;
927	}	1186	}
928		1187
929	cctx_destroy (coro->cctx);	1188	cctx_destroy (coro->cctx);
930	SvREFCNT_dec (coro->args);	1189	SvREFCNT_dec (coro->args);
931		1190
932	if (coro->next) coro->next->prev = coro->prev;	1191	if (coro->next) coro->next->prev = coro->prev;
933	if (coro->prev) coro->prev->next = coro->next;	1192	if (coro->prev) coro->prev->next = coro->next;
934	if (coro == first) first = coro->next;	1193	if (coro == coro_first) coro_first = coro->next;
935		1194
936	return 1;	1195	return 1;
937	}	1196	}
938		1197
939	static int	1198	static int
…		…
972	#else	1231	#else
973	# define MGf_DUP 0	1232	# define MGf_DUP 0
974	#endif	1233	#endif
975	};	1234	};
976		1235
977	static struct coro *
978	SvSTATE_ (pTHX_ SV *coro)
979	{
980	HV *stash;
981	MAGIC *mg;
982
983	if (SvROK (coro))
984	coro = SvRV (coro);
985
986	stash = SvSTASH (coro);
987	if (stash != coro_stash && stash != coro_state_stash)
988	{
989	/* very slow, but rare, check */
990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
991	croak ("Coro::State object required");
992	}
993
994	mg = CORO_MAGIC (coro);
995	return (struct coro *)mg->mg_ptr;
996	}
997
998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
999
1000	static void	1236	static void
1001	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1237	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002	{	1238	{
1003	ta->prev = SvSTATE (prev_sv);	1239	ta->prev = SvSTATE (prev_sv);
1004	ta->next = SvSTATE (next_sv);	1240	ta->next = SvSTATE (next_sv);
		1241	TRANSFER_CHECK (*ta);
1005	}	1242	}
1006		1243
1007	static void	1244	static void
1008	api_transfer (SV *prev_sv, SV *next_sv)	1245	api_transfer (SV *prev_sv, SV *next_sv)
1009	{	1246	{
1010	dTHX;	1247	dTHX;
1011	struct transfer_args ta;	1248	struct transfer_args ta;
1012		1249
1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1250	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014	TRANSFER (ta);	1251	TRANSFER (ta);
1015	}
1016
1017	static int
1018	api_save (SV *coro_sv, int new_save)
1019	{
1020	dTHX;
1021	struct coro *coro = SvSTATE (coro_sv);
1022	int old_save = coro->save;
1023
1024	if (new_save >= 0)
1025	coro->save = new_save;
1026
1027	return old_save;
1028	}	1252	}
1029		1253
1030	/** Coro ********************************************************************/	1254	/** Coro ********************************************************************/
1031		1255
1032	static void	1256	static void
…		…
1091	{	1315	{
1092	LOCK;	1316	LOCK;
1093	next_sv = coro_deq (aTHX_ PRIO_MIN);	1317	next_sv = coro_deq (aTHX_ PRIO_MIN);
1094		1318
1095	/* nothing to schedule: call the idle handler */	1319	/* nothing to schedule: call the idle handler */
1096	if (!next_sv)	1320	if (expect_false (!next_sv))
1097	{	1321	{
1098	dSP;	1322	dSP;
1099	UNLOCK;	1323	UNLOCK;
1100		1324
1101	ENTER;	1325	ENTER;
…		…
1111	}	1335	}
1112		1336
1113	ta->next = SvSTATE (next_sv);	1337	ta->next = SvSTATE (next_sv);
1114		1338
1115	/* cannot transfer to destroyed coros, skip and look for next */	1339	/* cannot transfer to destroyed coros, skip and look for next */
1116	if (ta->next->flags & CF_DESTROYED)	1340	if (expect_false (ta->next->flags & CF_DESTROYED))
1117	{	1341	{
1118	UNLOCK;	1342	UNLOCK;
1119	SvREFCNT_dec (next_sv);	1343	SvREFCNT_dec (next_sv);
1120	/* coro_nready is already taken care of by destroy */	1344	/* coro_nready is already taken care of by destroy */
1121	continue;	1345	continue;
…		…
1126	break;	1350	break;
1127	}	1351	}
1128		1352
1129	/* free this only after the transfer */	1353	/* free this only after the transfer */
1130	prev_sv = SvRV (coro_current);	1354	prev_sv = SvRV (coro_current);
1131	SvRV_set (coro_current, next_sv);
1132	ta->prev = SvSTATE (prev_sv);	1355	ta->prev = SvSTATE (prev_sv);
1133		1356	TRANSFER_CHECK (*ta);
1134	assert (ta->next->flags & CF_READY);	1357	assert (ta->next->flags & CF_READY);
1135	ta->next->flags &= ~CF_READY;	1358	ta->next->flags &= ~CF_READY;
		1359	SvRV_set (coro_current, next_sv);
1136		1360
1137	LOCK;	1361	LOCK;
1138	free_coro_mortal (aTHX);	1362	free_coro_mortal (aTHX);
1139	coro_mortal = prev_sv;	1363	coro_mortal = prev_sv;
1140	UNLOCK;	1364	UNLOCK;
…		…
1177	dTHX;	1401	dTHX;
1178	struct transfer_args ta;	1402	struct transfer_args ta;
1179		1403
1180	prepare_cede (aTHX_ &ta);	1404	prepare_cede (aTHX_ &ta);
1181		1405
1182	if (ta.prev != ta.next)	1406	if (expect_true (ta.prev != ta.next))
1183	{	1407	{
1184	TRANSFER (ta);	1408	TRANSFER (ta);
1185	return 1;	1409	return 1;
1186	}	1410	}
1187	else	1411	else
…		…
1201	}	1425	}
1202	else	1426	else
1203	return 0;	1427	return 0;
1204	}	1428	}
1205		1429
		1430	static void
		1431	api_trace (SV *coro_sv, int flags)
		1432	{
		1433	dTHX;
		1434	struct coro *coro = SvSTATE (coro_sv);
		1435
		1436	if (flags & CC_TRACE)
		1437	{
		1438	if (!coro->cctx)
		1439	coro->cctx = cctx_new ();
		1440	else if (!(coro->cctx->flags & CC_TRACE))
		1441	croak ("cannot enable tracing on coroutine with custom stack");
		1442
		1443	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1444	}
		1445	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1446	{
		1447	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1448
		1449	if (coro->flags & CF_RUNNING)
		1450	PL_runops = RUNOPS_DEFAULT;
		1451	else
		1452	coro->slot->runops = RUNOPS_DEFAULT;
		1453	}
		1454	}
		1455
1206	MODULE = Coro::State PACKAGE = Coro::State	1456	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207		1457
1208	PROTOTYPES: DISABLE	1458	PROTOTYPES: DISABLE
1209		1459
1210	BOOT:	1460	BOOT:
1211	{	1461	{
1212	#ifdef USE_ITHREADS	1462	#ifdef USE_ITHREADS
1213	MUTEX_INIT (&coro_mutex);	1463	MUTEX_INIT (&coro_mutex);
1214	#endif	1464	#endif
1215	BOOT_PAGESIZE;	1465	BOOT_PAGESIZE;
1216		1466
		1467	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1468	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1469
1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1470	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218		1471
1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1472	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1473	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1221	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1222	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1223	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1224	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1474	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1475	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226		1476
1227	main_mainstack = PL_mainstack;	1477	main_mainstack = PL_mainstack;
1228	main_top_env = PL_top_env;	1478	main_top_env = PL_top_env;
1229		1479
1230	while (main_top_env->je_prev)	1480	while (main_top_env->je_prev)
…		…
1243	struct coro *coro;	1493	struct coro *coro;
1244	HV *hv;	1494	HV *hv;
1245	int i;	1495	int i;
1246		1496
1247	Newz (0, coro, 1, struct coro);	1497	Newz (0, coro, 1, struct coro);
1248	coro->args = newAV ();	1498	coro->args = newAV ();
1249	coro->save = CORO_SAVE_DEF;
1250	coro->flags = CF_NEW;	1499	coro->flags = CF_NEW;
1251		1500
1252	if (first) first->prev = coro;	1501	if (coro_first) coro_first->prev = coro;
1253	coro->next = first;	1502	coro->next = coro_first;
1254	first = coro;	1503	coro_first = coro;
1255		1504
1256	coro->hv = hv = newHV ();	1505	coro->hv = hv = newHV ();
1257	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1506	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1507	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259		1508
		1509	av_extend (coro->args, items - 1);
1260	for (i = 1; i < items; i++)	1510	for (i = 1; i < items; i++)
1261	av_push (coro->args, newSVsv (ST (i)));	1511	av_push (coro->args, newSVsv (ST (i)));
1262	}	1512	}
1263	OUTPUT:	1513	OUTPUT:
1264	RETVAL	1514	RETVAL
1265		1515
1266	int	1516	# these not obviously related functions are all rolled into the same xs
1267	save (SV *coro, int new_save = -1)	1517	# function to increase chances that they all will call transfer with the same
1268	CODE:	1518	# stack offset
1269	RETVAL = api_save (coro, new_save);
1270	OUTPUT:
1271	RETVAL
1272
1273	int
1274	save_also (SV *coro_sv, int save_also)
1275	CODE:
1276	{
1277	struct coro *coro = SvSTATE (coro_sv);
1278	RETVAL = coro->save;
1279	coro->save |= save_also;
1280	}
1281	OUTPUT:
1282	RETVAL
1283
1284	void	1519	void
1285	_set_stacklevel (...)	1520	_set_stacklevel (...)
1286	ALIAS:	1521	ALIAS:
1287	Coro::State::transfer = 1	1522	Coro::State::transfer = 1
1288	Coro::schedule = 2	1523	Coro::schedule = 2
…		…
1322	}	1557	}
1323		1558
1324	BARRIER;	1559	BARRIER;
1325	TRANSFER (ta);	1560	TRANSFER (ta);
1326		1561
1327	if (GIMME_V != G_VOID && ta.next != ta.prev)	1562	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1328	XSRETURN_YES;	1563	XSRETURN_YES;
1329	}	1564	}
1330		1565
1331	bool	1566	bool
1332	_destroy (SV *coro_sv)	1567	_destroy (SV *coro_sv)
…		…
1368	void	1603	void
1369	list ()	1604	list ()
1370	PPCODE:	1605	PPCODE:
1371	{	1606	{
1372	struct coro *coro;	1607	struct coro *coro;
1373	for (coro = first; coro; coro = coro->next)	1608	for (coro = coro_first; coro; coro = coro->next)
1374	if (coro->hv)	1609	if (coro->hv)
1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1610	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376	}	1611	}
1377		1612
1378	void	1613	void
1379	_eval (Coro::State coro, SV *coderef)	1614	call (Coro::State coro, SV *coderef)
		1615	ALIAS:
		1616	eval = 1
1380	CODE:	1617	CODE:
1381	{	1618	{
1382	if (coro->mainstack)	1619	if (coro->mainstack)
1383	{	1620	{
1384	struct coro temp;	1621	struct coro temp;
1385	Zero (&temp, 1, struct coro);
1386	temp.save = CORO_SAVE_ALL;
1387		1622
1388	if (!(coro->flags & CF_RUNNING))	1623	if (!(coro->flags & CF_RUNNING))
1389	{	1624	{
1390	save_perl (aTHX_ &temp);	1625	save_perl (aTHX_ &temp);
1391	load_perl (aTHX_ coro);	1626	load_perl (aTHX_ coro);
…		…
1395	dSP;	1630	dSP;
1396	ENTER;	1631	ENTER;
1397	SAVETMPS;	1632	SAVETMPS;
1398	PUSHMARK (SP);	1633	PUSHMARK (SP);
1399	PUTBACK;	1634	PUTBACK;
		1635
		1636	if (ix)
		1637	eval_sv (coderef, 0);
		1638	else
1400	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1639	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1640
1401	SPAGAIN;	1641	SPAGAIN;
1402	FREETMPS;	1642	FREETMPS;
1403	LEAVE;	1643	LEAVE;
1404	PUTBACK;	1644	PUTBACK;
1405	}	1645	}
…		…
1409	save_perl (aTHX_ coro);	1649	save_perl (aTHX_ coro);
1410	load_perl (aTHX_ &temp);	1650	load_perl (aTHX_ &temp);
1411	}	1651	}
1412	}	1652	}
1413	}	1653	}
1414		1654
1415	SV *	1655	SV *
1416	is_ready (Coro::State coro)	1656	is_ready (Coro::State coro)
1417	PROTOTYPE: $	1657	PROTOTYPE: $
1418	ALIAS:	1658	ALIAS:
1419	is_ready = CF_READY	1659	is_ready = CF_READY
…		…
1423	CODE:	1663	CODE:
1424	RETVAL = boolSV (coro->flags & ix);	1664	RETVAL = boolSV (coro->flags & ix);
1425	OUTPUT:	1665	OUTPUT:
1426	RETVAL	1666	RETVAL
1427		1667
		1668	void
		1669	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1670
		1671	SV *
		1672	has_stack (Coro::State coro)
		1673	PROTOTYPE: $
		1674	CODE:
		1675	RETVAL = boolSV (!!coro->cctx);
		1676	OUTPUT:
		1677	RETVAL
		1678
		1679	int
		1680	is_traced (Coro::State coro)
		1681	PROTOTYPE: $
		1682	CODE:
		1683	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1684	OUTPUT:
		1685	RETVAL
		1686
1428	IV	1687	IV
1429	rss (Coro::State coro)	1688	rss (Coro::State coro)
1430	PROTOTYPE: $	1689	PROTOTYPE: $
		1690	ALIAS:
		1691	usecount = 1
1431	CODE:	1692	CODE:
1432	RETVAL = coro_rss (coro);	1693	switch (ix)
		1694	{
		1695	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1696	case 1: RETVAL = coro->usecount; break;
		1697	}
1433	OUTPUT:	1698	OUTPUT:
1434	RETVAL	1699	RETVAL
1435		1700
1436		1701
1437	MODULE = Coro::State PACKAGE = Coro	1702	MODULE = Coro::State PACKAGE = Coro
1438		1703
1439	BOOT:	1704	BOOT:
1440	{	1705	{
1441	int i;	1706	int i;
1442		1707
		1708	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1709	get_sv ("Coro::POOL_RSS" , TRUE); /* silence stupid 5.10 warning */
		1710	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1711	get_sv ("Coro::POOL_SIZE" , TRUE); /* silence stupid 5.10 warning */
		1712	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1713	get_av ("Coro::async_pool", TRUE); /* silence stupid 5.10 warning */
		1714
		1715	coro_current = get_sv ("Coro::current", FALSE);
		1716	SvREADONLY_on (coro_current);
		1717
1443	coro_stash = gv_stashpv ("Coro", TRUE);	1718	coro_stash = gv_stashpv ("Coro", TRUE);
1444		1719
1445	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1720	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1721	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1722	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1723	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1724	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1725	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451		1726
1452	coro_current = get_sv ("Coro::current", FALSE);
1453	SvREADONLY_on (coro_current);
1454
1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1727	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456	coro_ready[i] = newAV ();	1728	coro_ready[i] = newAV ();
1457		1729
1458	{	1730	{
1459	SV *sv = perl_get_sv("Coro::API", 1);	1731	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1732	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1460		1733
1461	coroapi.schedule = api_schedule;	1734	coroapi.schedule = api_schedule;
1462	coroapi.save = api_save;
1463	coroapi.cede = api_cede;	1735	coroapi.cede = api_cede;
1464	coroapi.cede_notself = api_cede_notself;	1736	coroapi.cede_notself = api_cede_notself;
1465	coroapi.ready = api_ready;	1737	coroapi.ready = api_ready;
1466	coroapi.is_ready = api_is_ready;	1738	coroapi.is_ready = api_is_ready;
1467	coroapi.nready = &coro_nready;	1739	coroapi.nready = &coro_nready;
…		…
1516	CODE:	1788	CODE:
1517	RETVAL = coro_nready;	1789	RETVAL = coro_nready;
1518	OUTPUT:	1790	OUTPUT:
1519	RETVAL	1791	RETVAL
1520		1792
		1793	void
		1794	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1795	PROTOTYPE: $;$
		1796	CODE:
		1797	SvREFCNT_dec (self->throw);
		1798	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1799
		1800	# for async_pool speedup
		1801	void
		1802	_pool_1 (SV *cb)
		1803	CODE:
		1804	{
		1805	struct coro *coro = SvSTATE (coro_current);
		1806	HV *hv = (HV *)SvRV (coro_current);
		1807	AV *defav = GvAV (PL_defgv);
		1808	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1809	AV *invoke_av;
		1810	int i, len;
		1811
		1812	if (!invoke)
		1813	croak ("\3async_pool terminate\2\n");
		1814
		1815	SvREFCNT_dec (coro->saved_deffh);
		1816	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1817
		1818	hv_store (hv, "desc", sizeof ("desc") - 1,
		1819	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1820
		1821	invoke_av = (AV *)SvRV (invoke);
		1822	len = av_len (invoke_av);
		1823
		1824	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1825
		1826	if (len > 0)
		1827	{
		1828	av_fill (defav, len - 1);
		1829	for (i = 0; i < len; ++i)
		1830	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1831	}
		1832
		1833	SvREFCNT_dec (invoke);
		1834	}
		1835
		1836	void
		1837	_pool_2 (SV *cb)
		1838	CODE:
		1839	{
		1840	struct coro *coro = SvSTATE (coro_current);
		1841
		1842	sv_setsv (cb, &PL_sv_undef);
		1843
		1844	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1845	coro->saved_deffh = 0;
		1846
		1847	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1848	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1849	croak ("\3async_pool terminate\2\n");
		1850
		1851	av_clear (GvAV (PL_defgv));
		1852	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1853	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1854
		1855	coro->prio = 0;
		1856
		1857	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1858	api_trace (coro_current, 0);
		1859
		1860	av_push (av_async_pool, newSVsv (coro_current));
		1861	}
		1862
		1863
1521	MODULE = Coro::State PACKAGE = Coro::AIO	1864	MODULE = Coro::State PACKAGE = Coro::AIO
1522		1865
1523	SV *	1866	SV *
1524	_get_state ()	1867	_get_state ()
1525	CODE:	1868	CODE:

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