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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.149 by root, Sat Apr 14 15:06:05 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;
		234
		235	/* linked list */
		236	struct coro *next, *prev;
		237	HV *hv; /* the perl hash associated with this coro, if any */
193	};	238	};
194		239
195	typedef struct coro *Coro__State;	240	typedef struct coro *Coro__State;
196	typedef struct coro *Coro__State_or_hashref;	241	typedef struct coro *Coro__State_or_hashref;
197		242
…		…
206		251
207	/* for Coro.pm */	252	/* for Coro.pm */
208	static SV *coro_current;	253	static SV *coro_current;
209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	254	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
210	static int coro_nready;	255	static int coro_nready;
		256	static struct coro *coro_first;
211		257
212	/** lowlevel stuff **********************************************************/	258	/** lowlevel stuff **********************************************************/
213		259
214	static AV *	260	static AV *
215	coro_clone_padlist (pTHX_ CV *cv)	261	coro_clone_padlist (pTHX_ CV *cv)
…		…
281	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	327	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
282	? SvMAGIC (cv) \	328	? SvMAGIC (cv) \
283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	329	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
284	: 0	330	: 0
285		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
286	/* the next two functions merely cache the padlists */	358	/* the next two functions merely cache the padlists */
287	static void	359	static void
288	get_padlist (pTHX_ CV *cv)	360	get_padlist (pTHX_ CV *cv)
289	{	361	{
290	MAGIC *mg = CORO_MAGIC (cv);	362	MAGIC *mg = CORO_MAGIC (cv);
291	AV *av;	363	AV *av;
292		364
293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	365	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	366	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295	else	367	else
296	{	368	{
297	#if CORO_PREFER_PERL_FUNCTIONS	369	#if CORO_PREFER_PERL_FUNCTIONS
298	/* this is probably cleaner, but also slower? */	370	/* this is probably cleaner, but also slower? */
…		…
310	put_padlist (pTHX_ CV *cv)	382	put_padlist (pTHX_ CV *cv)
311	{	383	{
312	MAGIC *mg = CORO_MAGIC (cv);	384	MAGIC *mg = CORO_MAGIC (cv);
313	AV *av;	385	AV *av;
314		386
315	if (!mg)	387	if (expect_false (!mg))
316	{	388	{
317	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	389	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	390	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319	mg->mg_virtual = &vtbl_coro;	391	mg->mg_virtual = &vtbl_coro;
320	mg->mg_obj = (SV *)newAV ();	392	mg->mg_obj = (SV *)newAV ();
321	}	393	}
322		394
323	av = (AV *)mg->mg_obj;	395	av = (AV *)mg->mg_obj;
324		396
325	if (AvFILLp (av) >= AvMAX (av))	397	if (expect_false (AvFILLp (av) >= AvMAX (av)))
326	av_extend (av, AvMAX (av) + 1);	398	av_extend (av, AvMAX (av) + 1);
327		399
328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	400	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329	}	401	}
330		402
331	/** load & save, init *******************************************************/	403	/** load & save, init *******************************************************/
332		404
333	#define SB do {
334	#define SE } while (0)
335
336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337
338	static void	405	static void
339	load_perl (pTHX_ Coro__State c)	406	load_perl (pTHX_ Coro__State c)
340	{	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
341	#define VAR(name,type) PL_ ## name = c->name;	418	#define VAR(name,type) PL_ ## name = slot->name;
342	# include "state.h"	419	# include "state.h"
343	#undef VAR	420	#undef VAR
344
345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350	if (c->irssv)
351	{
352	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353	{
354	SvREFCNT_dec (c->irssv);
355	c->irssv = 0;
356	}
357	else
358	{
359	REPLACE_SV (PL_rs, c->irssv);
360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361	sv_setsv (c->irssv_sv, PL_rs);
362	}
363	}
364		421
365	{	422	{
366	dSP;	423	dSP;
		424
367	CV *cv;	425	CV *cv;
368		426
369	/* now do the ugly restore mess */	427	/* now do the ugly restore mess */
370	while ((cv = (CV *)POPs))	428	while (expect_true (cv = (CV *)POPs))
371	{	429	{
372	put_padlist (aTHX_ cv); /* mark this padlist as available */	430	put_padlist (aTHX_ cv); /* mark this padlist as available */
373	CvDEPTH (cv) = PTR2IV (POPs);	431	CvDEPTH (cv) = PTR2IV (POPs);
374	CvPADLIST (cv) = (AV *)POPs;	432	CvPADLIST (cv) = (AV *)POPs;
375	}	433	}
376		434
377	PUTBACK;	435	PUTBACK;
378	}	436	}
379	assert (!PL_comppad || AvARRAY (PL_comppad));//D
380	}	437	}
381		438
382	static void	439	static void
383	save_perl (pTHX_ Coro__State c)	440	save_perl (pTHX_ Coro__State c)
384	{	441	{
385	assert (!PL_comppad || AvARRAY (PL_comppad));//D
386	{	442	{
387	dSP;	443	dSP;
388	I32 cxix = cxstack_ix;	444	I32 cxix = cxstack_ix;
389	PERL_CONTEXT *ccstk = cxstack;	445	PERL_CONTEXT *ccstk = cxstack;
390	PERL_SI *top_si = PL_curstackinfo;	446	PERL_SI *top_si = PL_curstackinfo;
…		…
392	/*	448	/*
393	* 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
394	* (and reinitialize) all cv's in the whole callchain :(	450	* (and reinitialize) all cv's in the whole callchain :(
395	*/	451	*/
396		452
397	EXTEND (SP, 3 + 1);
398	PUSHs (Nullsv);	453	XPUSHs (Nullsv);
399	/* this loop was inspired by pp_caller */	454	/* this loop was inspired by pp_caller */
400	for (;;)	455	for (;;)
401	{	456	{
402	while (cxix >= 0)	457	while (expect_true (cxix >= 0))
403	{	458	{
404	PERL_CONTEXT *cx = &ccstk[cxix--];	459	PERL_CONTEXT *cx = &ccstk[cxix--];
405		460
406	if (CxTYPE (cx) == CXt_SUB)	461	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407	{	462	{
408	CV *cv = cx->blk_sub.cv;	463	CV *cv = cx->blk_sub.cv;
409		464
410	if (CvDEPTH (cv))	465	if (expect_true (CvDEPTH (cv)))
411	{	466	{
412	EXTEND (SP, 3);	467	EXTEND (SP, 3);
413	PUSHs ((SV *)CvPADLIST (cv));	468	PUSHs ((SV *)CvPADLIST (cv));
414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	469	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
415	PUSHs ((SV *)cv);	470	PUSHs ((SV *)cv);
…		…
418	get_padlist (aTHX_ cv);	473	get_padlist (aTHX_ cv);
419	}	474	}
420	}	475	}
421	}	476	}
422		477
423	if (top_si->si_type == PERLSI_MAIN)	478	if (expect_true (top_si->si_type == PERLSI_MAIN))
424	break;	479	break;
425		480
426	top_si = top_si->si_prev;	481	top_si = top_si->si_prev;
427	ccstk = top_si->si_cxstack;	482	ccstk = top_si->si_cxstack;
428	cxix = top_si->si_cxix;	483	cxix = top_si->si_cxix;
429	}	484	}
430		485
431	PUTBACK;	486	PUTBACK;
432	}	487	}
433		488
434	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 */
435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	490	{
436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	491	/* we manually unroll here, as usually 2 slots is enough */
437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	492	int i;
438	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;
439		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
440	#define VAR(name,type)c->name = PL_ ## name;	512	#define VAR(name,type) slot->name = PL_ ## name;
441	# include "state.h"	513	# include "state.h"
442	#undef VAR	514	#undef VAR
		515	}
443	}	516	}
444		517
445	/*	518	/*
446	* allocate various perl stacks. This is an exact copy	519	* allocate various perl stacks. This is an exact copy
447	* of perl.c:init_stacks, except that it uses less memory	520	* of perl.c:init_stacks, except that it uses less memory
…		…
452	# define coro_init_stacks init_stacks	525	# define coro_init_stacks init_stacks
453	#else	526	#else
454	static void	527	static void
455	coro_init_stacks (pTHX)	528	coro_init_stacks (pTHX)
456	{	529	{
457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	530	PL_curstackinfo = new_stackinfo(32, 8);
458	PL_curstackinfo->si_type = PERLSI_MAIN;	531	PL_curstackinfo->si_type = PERLSI_MAIN;
459	PL_curstack = PL_curstackinfo->si_stack;	532	PL_curstack = PL_curstackinfo->si_stack;
460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	533	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461		534
462	PL_stack_base = AvARRAY(PL_curstack);	535	PL_stack_base = AvARRAY(PL_curstack);
463	PL_stack_sp = PL_stack_base;	536	PL_stack_sp = PL_stack_base;
464	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	537	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465		538
466	New(50,PL_tmps_stack,128,SV*);	539	New(50,PL_tmps_stack,32,SV*);
467	PL_tmps_floor = -1;	540	PL_tmps_floor = -1;
468	PL_tmps_ix = -1;	541	PL_tmps_ix = -1;
469	PL_tmps_max = 128;	542	PL_tmps_max = 32;
470		543
471	New(54,PL_markstack,32,I32);	544	New(54,PL_markstack,16,I32);
472	PL_markstack_ptr = PL_markstack;	545	PL_markstack_ptr = PL_markstack;
473	PL_markstack_max = PL_markstack + 32;	546	PL_markstack_max = PL_markstack + 16;
474		547
475	#ifdef SET_MARK_OFFSET	548	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	549	SET_MARK_OFFSET;
477	#endif	550	#endif
478		551
479	New(54,PL_scopestack,32,I32);	552	New(54,PL_scopestack,8,I32);
480	PL_scopestack_ix = 0;	553	PL_scopestack_ix = 0;
481	PL_scopestack_max = 32;	554	PL_scopestack_max = 8;
482		555
483	New(54,PL_savestack,64,ANY);	556	New(54,PL_savestack,24,ANY);
484	PL_savestack_ix = 0;	557	PL_savestack_ix = 0;
485	PL_savestack_max = 64;	558	PL_savestack_max = 24;
486		559
487	#if !PERL_VERSION_ATLEAST (5,9,0)	560	#if !PERL_VERSION_ATLEAST (5,9,0)
488	New(54,PL_retstack,16,OP*);	561	New(54,PL_retstack,4,OP*);
489	PL_retstack_ix = 0;	562	PL_retstack_ix = 0;
490	PL_retstack_max = 16;	563	PL_retstack_max = 4;
491	#endif	564	#endif
492	}	565	}
493	#endif	566	#endif
494		567
495	/*	568	/*
496	* destroy the stacks, the callchain etc...	569	* destroy the stacks, the callchain etc...
497	*/	570	*/
498	static void	571	static void
499	coro_destroy_stacks (pTHX)	572	coro_destroy_stacks (pTHX)
500	{	573	{
501	if (!IN_DESTRUCT)
502	{
503	/* restore all saved variables and stuff */
504	LEAVE_SCOPE (0);
505	assert (PL_tmps_floor == -1);
506
507	/* free all temporaries */
508	FREETMPS;
509	assert (PL_tmps_ix == -1);
510
511	/* unwind all extra stacks */
512	POPSTACK_TO (PL_mainstack);
513
514	/* unwind main stack */
515	dounwind (-1);
516	}
517
518	while (PL_curstackinfo->si_next)	574	while (PL_curstackinfo->si_next)
519	PL_curstackinfo = PL_curstackinfo->si_next;	575	PL_curstackinfo = PL_curstackinfo->si_next;
520		576
521	while (PL_curstackinfo)	577	while (PL_curstackinfo)
522	{	578	{
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	593	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	594	Safefree (PL_retstack);
539	#endif	595	#endif
540	}	596	}
541		597
		598	static size_t
		599	coro_rss (pTHX_ struct coro *coro)
		600	{
		601	size_t rss = sizeof (*coro);
		602
		603	if (coro->mainstack)
		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
		619	rss += sizeof (slot->curstackinfo);
		620	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		621	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		622	rss += slot->tmps_max * sizeof (SV *);
		623	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		624	rss += slot->scopestack_max * sizeof (I32);
		625	rss += slot->savestack_max * sizeof (ANY);
		626
		627	#if !PERL_VERSION_ATLEAST (5,9,0)
		628	rss += slot->retstack_max * sizeof (OP *);
		629	#endif
		630	}
		631
		632	return rss;
		633	}
		634
542	/** coroutine stack handling ************************************************/	635	/** coroutine stack handling ************************************************/
543		636
544	static void	637	static void
545	setup_coro (pTHX_ struct coro *coro)	638	coro_setup (pTHX_ struct coro *coro)
546	{	639	{
547	/*	640	/*
548	* emulate part of the perl startup here.	641	* emulate part of the perl startup here.
549	*/	642	*/
550	coro_init_stacks (aTHX);	643	coro_init_stacks (aTHX);
551		644
		645	PL_runops = RUNOPS_DEFAULT;
552	PL_curcop = &PL_compiling;	646	PL_curcop = &PL_compiling;
553	PL_in_eval = EVAL_NULL;	647	PL_in_eval = EVAL_NULL;
554	PL_comppad = 0;	648	PL_comppad = 0;
555	PL_curpm = 0;	649	PL_curpm = 0;
		650	PL_curpad = 0;
556	PL_localizing = 0;	651	PL_localizing = 0;
557	PL_dirty = 0;	652	PL_dirty = 0;
558	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);
559		663
560	{	664	{
561	dSP;	665	dSP;
562	LOGOP myop;	666	LOGOP myop;
563		667
564	SvREFCNT_dec (GvAV (PL_defgv));
565	GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567	Zero (&myop, 1, LOGOP);	668	Zero (&myop, 1, LOGOP);
568	myop.op_next = Nullop;	669	myop.op_next = Nullop;
569	myop.op_flags = OPf_WANT_VOID;	670	myop.op_flags = OPf_WANT_VOID;
570		671
571	PUSHMARK (SP);	672	PUSHMARK (SP);
572	XPUSHs (av_shift (GvAV (PL_defgv)));	673	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573	PUTBACK;	674	PUTBACK;
574	PL_op = (OP *)&myop;	675	PL_op = (OP *)&myop;
575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	676	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576	SPAGAIN;	677	SPAGAIN;
577	}	678	}
578		679
579	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);
580	}	717	}
581		718
582	static void	719	static void
583	free_coro_mortal (pTHX)	720	free_coro_mortal (pTHX)
584	{	721	{
585	if (coro_mortal)	722	if (expect_true (coro_mortal))
586	{	723	{
587	SvREFCNT_dec (coro_mortal);	724	SvREFCNT_dec (coro_mortal);
588	coro_mortal = 0;	725	coro_mortal = 0;
589	}	726	}
590	}	727	}
591		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;
		851	}
		852
592	/* 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 */
593	/* _cctx_init shoukld 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 */
594	/* during execution of a pelr program */	855	/* during execution of a perl program */
595	static void NOINLINE	856	static void NOINLINE
596	prepare_cctx (pTHX_ coro_cctx *cctx)	857	prepare_cctx (pTHX_ coro_cctx *cctx)
597	{	858	{
598	dSP;	859	dSP;
599	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;
600		866
601	Zero (&myop, 1, LOGOP);	867	Zero (&myop, 1, LOGOP);
602	myop.op_next = PL_op;	868	myop.op_next = PL_op;
603	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	869	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604		870
…		…
621	dTHX;	887	dTHX;
622		888
623	/* coro_run is the alternative tail of transfer(), so unlock here. */	889	/* coro_run is the alternative tail of transfer(), so unlock here. */
624	UNLOCK;	890	UNLOCK;
625		891
626	PL_top_env = &PL_start_env;	892	/* we now skip the entersub that lead to transfer() */
		893	PL_op = PL_op->op_next;
627		894
628	/* inject a fake subroutine call to cctx_init */	895	/* inject a fake subroutine call to cctx_init */
629	prepare_cctx (aTHX_ (coro_cctx *)arg);	896	prepare_cctx (aTHX_ (coro_cctx *)arg);
630		897
631	/* 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 */
…		…
665	# if CORO_STACKGUARD	932	# if CORO_STACKGUARD
666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	933	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
667	# endif	934	# endif
668	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	935	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
669	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	936	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
670	cctx->mapped = 1;	937	cctx->flags |= CC_MAPPED;
671	}	938	}
672	else	939	else
673	#endif	940	#endif
674	{	941	{
675	cctx->ssize = coro_stacksize * (long)sizeof (long);	942	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
702	#if CORO_USE_VALGRIND	969	#if CORO_USE_VALGRIND
703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	970	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
704	#endif	971	#endif
705		972
706	#if HAVE_MMAP	973	#if HAVE_MMAP
707	if (cctx->mapped)	974	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	975	munmap (cctx->sptr, cctx->ssize);
709	else	976	else
710	#endif	977	#endif
711	Safefree (cctx->sptr);	978	Safefree (cctx->sptr);
712		979
713	Safefree (cctx);	980	Safefree (cctx);
714	}	981	}
715		982
		983	/* wether this cctx should be destructed */
		984	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		985
716	static coro_cctx *	986	static coro_cctx *
717	cctx_get (pTHX)	987	cctx_get (pTHX)
718	{	988	{
719	while (cctx_first)	989	while (expect_true (cctx_first))
720	{	990	{
721	coro_cctx *cctx = cctx_first;	991	coro_cctx *cctx = cctx_first;
722	cctx_first = cctx->next;	992	cctx_first = cctx->next;
723	--cctx_idle;	993	--cctx_idle;
724		994
725	if (cctx->ssize >= coro_stacksize)	995	if (expect_true (!CCTX_EXPIRED (cctx)))
726	return cctx;	996	return cctx;
727		997
728	cctx_destroy (cctx);	998	cctx_destroy (cctx);
729	}	999	}
730		1000
731	PL_op = PL_op->op_next;
732	return cctx_new ();	1001	return cctx_new ();
733	}	1002	}
734		1003
735	static void	1004	static void
736	cctx_put (coro_cctx *cctx)	1005	cctx_put (coro_cctx *cctx)
737	{	1006	{
738	/* free another cctx if overlimit */	1007	/* free another cctx if overlimit */
739	if (cctx_idle >= MAX_IDLE_CCTX)	1008	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
740	{	1009	{
741	coro_cctx *first = cctx_first;	1010	coro_cctx *first = cctx_first;
742	cctx_first = first->next;	1011	cctx_first = first->next;
743	--cctx_idle;	1012	--cctx_idle;
744		1013
745	assert (!first->inuse);
746	cctx_destroy (first);	1014	cctx_destroy (first);
747	}	1015	}
748		1016
749	++cctx_idle;	1017	++cctx_idle;
750	cctx->next = cctx_first;	1018	cctx->next = cctx_first;
751	cctx_first = cctx;	1019	cctx_first = cctx;
752	}	1020	}
753		1021
754	/** coroutine switching *****************************************************/	1022	/** coroutine switching *****************************************************/
755		1023
756	/* 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 */
757	static void NOINLINE	1050	static void NOINLINE
758	transfer (pTHX_ struct coro *prev, struct coro *next)	1051	transfer (pTHX_ struct coro *prev, struct coro *next)
759	{	1052	{
760	dSTACKLEVEL;	1053	dSTACKLEVEL;
761		1054
762	/* sometimes transfer is only called to set idle_sp */	1055	/* sometimes transfer is only called to set idle_sp */
763	if (!next)	1056	if (expect_false (!next))
764	{	1057	{
765	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1058	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
766	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 */
767	}	1060	}
768	else if (prev != next)	1061	else if (expect_true (prev != next))
769	{	1062	{
770	coro_cctx *prev__cctx;	1063	coro_cctx *prev__cctx;
771		1064
772	if (prev->flags & CF_NEW)	1065	if (expect_false (prev->flags & CF_NEW))
773	{	1066	{
774	/* create a new empty context */	1067	/* create a new empty context */
775	Newz (0, prev->cctx, 1, coro_cctx);	1068	Newz (0, prev->cctx, 1, coro_cctx);
776	prev->cctx->inuse = 1;
777	prev->flags &= ~CF_NEW;	1069	prev->flags &= ~CF_NEW;
778	prev->flags |= CF_RUNNING;	1070	prev->flags |= CF_RUNNING;
779	}	1071	}
780		1072
781	/*TODO: must not croak here */
782	if (!prev->flags & CF_RUNNING)
783	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
784
785	if (next->flags & CF_RUNNING)
786	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
787
788	if (next->flags & CF_DESTROYED)
789	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
790
791	prev->flags &= ~CF_RUNNING;	1073	prev->flags &= ~CF_RUNNING;
792	next->flags |= CF_RUNNING;	1074	next->flags |= CF_RUNNING;
793		1075
794	LOCK;	1076	LOCK;
795		1077
796	if (next->flags & CF_NEW)	1078	if (expect_false (next->flags & CF_NEW))
797	{	1079	{
798	/* need to start coroutine */	1080	/* need to start coroutine */
799	next->flags &= ~CF_NEW;	1081	next->flags &= ~CF_NEW;
800	/* first get rid of the old state */	1082	/* first get rid of the old state */
801	save_perl (aTHX_ prev);	1083	save_perl (aTHX_ prev);
802	/* setup coroutine call */	1084	/* setup coroutine call */
803	setup_coro (aTHX_ next);	1085	coro_setup (aTHX_ next);
804	/* need a new stack */
805	assert (!next->cctx);
806	}	1086	}
807	else	1087	else
808	{	1088	{
809	/* coroutine already started */	1089	/* coroutine already started */
810	save_perl (aTHX_ prev);	1090	save_perl (aTHX_ prev);
…		…
812	}	1092	}
813		1093
814	prev__cctx = prev->cctx;	1094	prev__cctx = prev->cctx;
815		1095
816	/* possibly "free" the cctx */	1096	/* possibly "free" the cctx */
817	if (prev__cctx->idle_sp == STACKLEVEL)	1097	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
818	{	1098	{
819	/* 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 */
820	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));
821		1101
822	prev->cctx = 0;	1102	prev->cctx = 0;
823		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
824	cctx_put (prev__cctx);	1109	cctx_put (prev__cctx);
825	prev__cctx->inuse = 0;
826	}	1110	}
827		1111
		1112	++next->usecount;
		1113
828	if (!next->cctx)	1114	if (expect_true (!next->cctx))
829	{
830	next->cctx = cctx_get (aTHX);	1115	next->cctx = cctx_get (aTHX);
831	assert (!next->cctx->inuse);
832	next->cctx->inuse = 1;
833	}
834		1116
835	if (prev__cctx != next->cctx)	1117	if (expect_false (prev__cctx != next->cctx))
836	{	1118	{
837	prev__cctx->top_env = PL_top_env;	1119	prev__cctx->top_env = PL_top_env;
838	PL_top_env = next->cctx->top_env;	1120	PL_top_env = next->cctx->top_env;
839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1121	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
840	}	1122	}
841		1123
842	free_coro_mortal (aTHX);	1124	free_coro_mortal (aTHX);
843	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	}
844	}	1139	}
845	}	1140	}
846		1141
847	struct transfer_args	1142	struct transfer_args
848	{	1143	{
849	struct coro *prev, *next;	1144	struct coro *prev, *next;
850	};	1145	};
851		1146
852	#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)
853		1149
854	/** high level stuff ********************************************************/	1150	/** high level stuff ********************************************************/
855		1151
856	static int	1152	static int
857	coro_state_destroy (pTHX_ struct coro *coro)	1153	coro_state_destroy (pTHX_ struct coro *coro)
…		…
874		1170
875	if (coro->mainstack && coro->mainstack != main_mainstack)	1171	if (coro->mainstack && coro->mainstack != main_mainstack)
876	{	1172	{
877	struct coro temp;	1173	struct coro temp;
878		1174
879	assert (!(coro->flags & CF_RUNNING));
880
881	Zero (&temp, 1, struct coro);
882	temp.save = CORO_SAVE_DEF;
883
884	if (coro->flags & CF_RUNNING)	1175	if (coro->flags & CF_RUNNING)
885	croak ("FATAL: tried to destroy currently running coroutine");	1176	croak ("FATAL: tried to destroy currently running coroutine");
886		1177
887	save_perl (aTHX_ &temp);	1178	save_perl (aTHX_ &temp);
888	load_perl (aTHX_ coro);	1179	load_perl (aTHX_ coro);
889		1180
890	coro_destroy_stacks (aTHX);	1181	coro_destroy (aTHX_ coro);
891		1182
892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1183	load_perl (aTHX_ &temp);
893		1184
894	coro->mainstack = 0;	1185	coro->slot = 0;
895	}	1186	}
896		1187
897	cctx_destroy (coro->cctx);	1188	cctx_destroy (coro->cctx);
898	SvREFCNT_dec (coro->args);	1189	SvREFCNT_dec (coro->args);
899		1190
		1191	if (coro->next) coro->next->prev = coro->prev;
		1192	if (coro->prev) coro->prev->next = coro->next;
		1193	if (coro == coro_first) coro_first = coro->next;
		1194
900	return 1;	1195	return 1;
901	}	1196	}
902		1197
903	static int	1198	static int
904	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1199	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
905	{	1200	{
906	struct coro *coro = (struct coro *)mg->mg_ptr;	1201	struct coro *coro = (struct coro *)mg->mg_ptr;
907	mg->mg_ptr = 0;	1202	mg->mg_ptr = 0;
		1203
		1204	coro->hv = 0;
908		1205
909	if (--coro->refcnt < 0)	1206	if (--coro->refcnt < 0)
910	{	1207	{
911	coro_state_destroy (aTHX_ coro);	1208	coro_state_destroy (aTHX_ coro);
912	Safefree (coro);	1209	Safefree (coro);
…		…
934	#else	1231	#else
935	# define MGf_DUP 0	1232	# define MGf_DUP 0
936	#endif	1233	#endif
937	};	1234	};
938		1235
939	static struct coro *
940	SvSTATE_ (pTHX_ SV *coro)
941	{
942	HV *stash;
943	MAGIC *mg;
944
945	if (SvROK (coro))
946	coro = SvRV (coro);
947
948	stash = SvSTASH (coro);
949	if (stash != coro_stash && stash != coro_state_stash)
950	{
951	/* very slow, but rare, check */
952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
953	croak ("Coro::State object required");
954	}
955
956	mg = CORO_MAGIC (coro);
957	return (struct coro *)mg->mg_ptr;
958	}
959
960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
961
962	static void	1236	static void
963	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)
964	{	1238	{
965	ta->prev = SvSTATE (prev_sv);	1239	ta->prev = SvSTATE (prev_sv);
966	ta->next = SvSTATE (next_sv);	1240	ta->next = SvSTATE (next_sv);
		1241	TRANSFER_CHECK (*ta);
967	}	1242	}
968		1243
969	static void	1244	static void
970	api_transfer (SV *prev_sv, SV *next_sv)	1245	api_transfer (SV *prev_sv, SV *next_sv)
971	{	1246	{
972	dTHX;	1247	dTHX;
973	struct transfer_args ta;	1248	struct transfer_args ta;
974		1249
975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1250	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
976	TRANSFER (ta);	1251	TRANSFER (ta);
977	}
978
979	static int
980	api_save (SV *coro_sv, int new_save)
981	{
982	dTHX;
983	struct coro *coro = SvSTATE (coro_sv);
984	int old_save = coro->save;
985
986	if (new_save >= 0)
987	coro->save = new_save;
988
989	return old_save;
990	}	1252	}
991		1253
992	/** Coro ********************************************************************/	1254	/** Coro ********************************************************************/
993		1255
994	static void	1256	static void
…		…
1053	{	1315	{
1054	LOCK;	1316	LOCK;
1055	next_sv = coro_deq (aTHX_ PRIO_MIN);	1317	next_sv = coro_deq (aTHX_ PRIO_MIN);
1056		1318
1057	/* nothing to schedule: call the idle handler */	1319	/* nothing to schedule: call the idle handler */
1058	if (!next_sv)	1320	if (expect_false (!next_sv))
1059	{	1321	{
1060	dSP;	1322	dSP;
1061	UNLOCK;	1323	UNLOCK;
1062		1324
1063	ENTER;	1325	ENTER;
…		…
1073	}	1335	}
1074		1336
1075	ta->next = SvSTATE (next_sv);	1337	ta->next = SvSTATE (next_sv);
1076		1338
1077	/* cannot transfer to destroyed coros, skip and look for next */	1339	/* cannot transfer to destroyed coros, skip and look for next */
1078	if (ta->next->flags & CF_DESTROYED)	1340	if (expect_false (ta->next->flags & CF_DESTROYED))
1079	{	1341	{
1080	UNLOCK;	1342	UNLOCK;
1081	SvREFCNT_dec (next_sv);	1343	SvREFCNT_dec (next_sv);
1082	/* coro_nready is already taken care of by destroy */	1344	/* coro_nready is already taken care of by destroy */
1083	continue;	1345	continue;
…		…
1088	break;	1350	break;
1089	}	1351	}
1090		1352
1091	/* free this only after the transfer */	1353	/* free this only after the transfer */
1092	prev_sv = SvRV (coro_current);	1354	prev_sv = SvRV (coro_current);
1093	SvRV_set (coro_current, next_sv);
1094	ta->prev = SvSTATE (prev_sv);	1355	ta->prev = SvSTATE (prev_sv);
1095		1356	TRANSFER_CHECK (*ta);
1096	assert (ta->next->flags & CF_READY);	1357	assert (ta->next->flags & CF_READY);
1097	ta->next->flags &= ~CF_READY;	1358	ta->next->flags &= ~CF_READY;
		1359	SvRV_set (coro_current, next_sv);
1098		1360
1099	LOCK;	1361	LOCK;
1100	free_coro_mortal (aTHX);	1362	free_coro_mortal (aTHX);
1101	coro_mortal = prev_sv;	1363	coro_mortal = prev_sv;
1102	UNLOCK;	1364	UNLOCK;
…		…
1139	dTHX;	1401	dTHX;
1140	struct transfer_args ta;	1402	struct transfer_args ta;
1141		1403
1142	prepare_cede (aTHX_ &ta);	1404	prepare_cede (aTHX_ &ta);
1143		1405
1144	if (ta.prev != ta.next)	1406	if (expect_true (ta.prev != ta.next))
1145	{	1407	{
1146	TRANSFER (ta);	1408	TRANSFER (ta);
1147	return 1;	1409	return 1;
1148	}	1410	}
1149	else	1411	else
…		…
1163	}	1425	}
1164	else	1426	else
1165	return 0;	1427	return 0;
1166	}	1428	}
1167		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
1168	MODULE = Coro::State PACKAGE = Coro::State	1456	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1169		1457
1170	PROTOTYPES: DISABLE	1458	PROTOTYPES: DISABLE
1171		1459
1172	BOOT:	1460	BOOT:
1173	{	1461	{
1174	#ifdef USE_ITHREADS	1462	#ifdef USE_ITHREADS
1175	MUTEX_INIT (&coro_mutex);	1463	MUTEX_INIT (&coro_mutex);
1176	#endif	1464	#endif
1177	BOOT_PAGESIZE;	1465	BOOT_PAGESIZE;
1178		1466
		1467	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1468	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1469
1179	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1470	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1180		1471
1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1472	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1473	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1184	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1185	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1186	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1474	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1475	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1188		1476
1189	main_mainstack = PL_mainstack;	1477	main_mainstack = PL_mainstack;
1190	main_top_env = PL_top_env;	1478	main_top_env = PL_top_env;
1191		1479
1192	while (main_top_env->je_prev)	1480	while (main_top_env->je_prev)
…		…
1205	struct coro *coro;	1493	struct coro *coro;
1206	HV *hv;	1494	HV *hv;
1207	int i;	1495	int i;
1208		1496
1209	Newz (0, coro, 1, struct coro);	1497	Newz (0, coro, 1, struct coro);
1210	coro->args = newAV ();	1498	coro->args = newAV ();
1211	coro->save = CORO_SAVE_DEF;
1212	coro->flags = CF_NEW;	1499	coro->flags = CF_NEW;
1213		1500
		1501	if (coro_first) coro_first->prev = coro;
		1502	coro->next = coro_first;
		1503	coro_first = coro;
		1504
1214	hv = newHV ();	1505	coro->hv = hv = newHV ();
1215	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;
1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1507	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1217		1508
		1509	av_extend (coro->args, items - 1);
1218	for (i = 1; i < items; i++)	1510	for (i = 1; i < items; i++)
1219	av_push (coro->args, newSVsv (ST (i)));	1511	av_push (coro->args, newSVsv (ST (i)));
1220	}	1512	}
1221	OUTPUT:	1513	OUTPUT:
1222	RETVAL	1514	RETVAL
1223		1515
1224	int	1516	# these not obviously related functions are all rolled into the same xs
1225	save (SV *coro, int new_save = -1)	1517	# function to increase chances that they all will call transfer with the same
1226	CODE:	1518	# stack offset
1227	RETVAL = api_save (coro, new_save);
1228	OUTPUT:
1229	RETVAL
1230
1231	int
1232	save_also (SV *coro_sv, int save_also)
1233	CODE:
1234	{
1235	struct coro *coro = SvSTATE (coro_sv);
1236	RETVAL = coro->save;
1237	coro->save |= save_also;
1238	}
1239	OUTPUT:
1240	RETVAL
1241
1242	void	1519	void
1243	_set_stacklevel (...)	1520	_set_stacklevel (...)
1244	ALIAS:	1521	ALIAS:
1245	Coro::State::transfer = 1	1522	Coro::State::transfer = 1
1246	Coro::schedule = 2	1523	Coro::schedule = 2
…		…
1280	}	1557	}
1281		1558
1282	BARRIER;	1559	BARRIER;
1283	TRANSFER (ta);	1560	TRANSFER (ta);
1284		1561
1285	if (GIMME_V != G_VOID && ta.next != ta.prev)	1562	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1286	XSRETURN_YES;	1563	XSRETURN_YES;
1287	}	1564	}
1288		1565
1289	bool	1566	bool
1290	_destroy (SV *coro_sv)	1567	_destroy (SV *coro_sv)
…		…
1321	CODE:	1598	CODE:
1322	RETVAL = cctx_idle;	1599	RETVAL = cctx_idle;
1323	OUTPUT:	1600	OUTPUT:
1324	RETVAL	1601	RETVAL
1325		1602
		1603	void
		1604	list ()
		1605	PPCODE:
		1606	{
		1607	struct coro *coro;
		1608	for (coro = coro_first; coro; coro = coro->next)
		1609	if (coro->hv)
		1610	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1611	}
		1612
		1613	void
		1614	call (Coro::State coro, SV *coderef)
		1615	ALIAS:
		1616	eval = 1
		1617	CODE:
		1618	{
		1619	if (coro->mainstack)
		1620	{
		1621	struct coro temp;
		1622
		1623	if (!(coro->flags & CF_RUNNING))
		1624	{
		1625	save_perl (aTHX_ &temp);
		1626	load_perl (aTHX_ coro);
		1627	}
		1628
		1629	{
		1630	dSP;
		1631	ENTER;
		1632	SAVETMPS;
		1633	PUSHMARK (SP);
		1634	PUTBACK;
		1635
		1636	if (ix)
		1637	eval_sv (coderef, 0);
		1638	else
		1639	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1640
		1641	SPAGAIN;
		1642	FREETMPS;
		1643	LEAVE;
		1644	PUTBACK;
		1645	}
		1646
		1647	if (!(coro->flags & CF_RUNNING))
		1648	{
		1649	save_perl (aTHX_ coro);
		1650	load_perl (aTHX_ &temp);
		1651	}
		1652	}
		1653	}
		1654
		1655	SV *
		1656	is_ready (Coro::State coro)
		1657	PROTOTYPE: $
		1658	ALIAS:
		1659	is_ready = CF_READY
		1660	is_running = CF_RUNNING
		1661	is_new = CF_NEW
		1662	is_destroyed = CF_DESTROYED
		1663	CODE:
		1664	RETVAL = boolSV (coro->flags & ix);
		1665	OUTPUT:
		1666	RETVAL
		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
		1687	IV
		1688	rss (Coro::State coro)
		1689	PROTOTYPE: $
		1690	ALIAS:
		1691	usecount = 1
		1692	CODE:
		1693	switch (ix)
		1694	{
		1695	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1696	case 1: RETVAL = coro->usecount; break;
		1697	}
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701
1326	MODULE = Coro::State PACKAGE = Coro	1702	MODULE = Coro::State PACKAGE = Coro
1327		1703
1328	BOOT:	1704	BOOT:
1329	{	1705	{
1330	int i;	1706	int i;
1331		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
1332	coro_stash = gv_stashpv ("Coro", TRUE);	1718	coro_stash = gv_stashpv ("Coro", TRUE);
1333		1719
1334	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1720	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1335	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1721	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1336	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1722	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1337	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1723	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1338	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1724	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1339	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1725	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1340		1726
1341	coro_current = get_sv ("Coro::current", FALSE);
1342	SvREADONLY_on (coro_current);
1343
1344	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1727	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1345	coro_ready[i] = newAV ();	1728	coro_ready[i] = newAV ();
1346		1729
1347	{	1730	{
1348	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 */
1349		1733
1350	coroapi.schedule = api_schedule;	1734	coroapi.schedule = api_schedule;
1351	coroapi.save = api_save;
1352	coroapi.cede = api_cede;	1735	coroapi.cede = api_cede;
1353	coroapi.cede_notself = api_cede_notself;	1736	coroapi.cede_notself = api_cede_notself;
1354	coroapi.ready = api_ready;	1737	coroapi.ready = api_ready;
1355	coroapi.is_ready = api_is_ready;	1738	coroapi.is_ready = api_is_ready;
1356	coroapi.nready = &coro_nready;	1739	coroapi.nready = &coro_nready;
…		…
1397	CODE:	1780	CODE:
1398	RETVAL = boolSV (api_ready (self));	1781	RETVAL = boolSV (api_ready (self));
1399	OUTPUT:	1782	OUTPUT:
1400	RETVAL	1783	RETVAL
1401		1784
1402	SV *
1403	is_ready (SV *self)
1404	PROTOTYPE: $
1405	CODE:
1406	RETVAL = boolSV (api_is_ready (self));
1407	OUTPUT:
1408	RETVAL
1409
1410	int	1785	int
1411	nready (...)	1786	nready (...)
1412	PROTOTYPE:	1787	PROTOTYPE:
1413	CODE:	1788	CODE:
1414	RETVAL = coro_nready;	1789	RETVAL = coro_nready;
1415	OUTPUT:	1790	OUTPUT:
1416	RETVAL	1791	RETVAL
1417		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
1418	MODULE = Coro::State PACKAGE = Coro::AIO	1864	MODULE = Coro::State PACKAGE = Coro::AIO
1419		1865
1420	SV *	1866	SV *
1421	_get_state ()	1867	_get_state ()
1422	CODE:	1868	CODE:

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