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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 1.199 by root, Sun Oct 7 13:53:37 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	static SV *sv_diehook;
		154	static SV *sv_warnhook;
		155
		156	/* async_pool helper stuff */
		157	static SV *sv_pool_rss;
		158	static SV *sv_pool_size;
		159	static AV *av_async_pool;
		160
138	static struct coro_cctx *cctx_first;	161	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	162	static int cctx_count, cctx_idle;
		163
		164	enum {
		165	CC_MAPPED = 0x01,
		166	CC_NOREUSE = 0x02, /* throw this away after tracing */
		167	CC_TRACE = 0x04,
		168	CC_TRACE_SUB = 0x08, /* trace sub calls */
		169	CC_TRACE_LINE = 0x10, /* trace each statement */
		170	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		171	};
140		172
141	/* this is a structure representing a c-level coroutine */	173	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	174	typedef struct coro_cctx {
143	struct coro_cctx *next;	175	struct coro_cctx *next;
144		176
…		…
153	coro_context cctx;	185	coro_context cctx;
154		186
155	#if CORO_USE_VALGRIND	187	#if CORO_USE_VALGRIND
156	int valgrind_id;	188	int valgrind_id;
157	#endif	189	#endif
158	char inuse, mapped;	190	unsigned char flags;
159	} coro_cctx;	191	} coro_cctx;
160		192
161	enum {	193	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	194	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	195	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	196	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	197	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	198	};
167		199
		200	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		201	typedef struct {
		202	SV *defsv;
		203	AV *defav;
		204	SV *errsv;
		205	SV *irsgv;
		206	#define VAR(name,type) type name;
		207	# include "state.h"
		208	#undef VAR
		209	} perl_slots;
		210
		211	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		212
168	/* this is a structure representing a perl-level coroutine */	213	/* this is a structure representing a perl-level coroutine */
169	struct coro {	214	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	215	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	216	coro_cctx *cctx;
172		217
		218	/* process data */
		219	AV *mainstack;
		220	perl_slots *slot; /* basically the saved sp */
		221
173	/* data associated with this coroutine (initial args) */	222	/* data associated with this coroutine (initial args) */
174	AV *args;	223	AV *args;
175	int refcnt;	224	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	225	int flags; /* CF_ flags */
178		226
179	/* optionally saved, might be zero */	227	/* statistics */
180	AV *defav; /* @_ */	228	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		229
191	/* coro process data */	230	/* coro process data */
192	int prio;	231	int prio;
		232	SV *throw;
		233
		234	/* async_pool */
		235	SV *saved_deffh;
193		236
194	/* linked list */	237	/* linked list */
195	struct coro *next, *prev;	238	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */	239	HV *hv; /* the perl hash associated with this coro, if any */
197	};	240	};
…		…
210		253
211	/* for Coro.pm */	254	/* for Coro.pm */
212	static SV *coro_current;	255	static SV *coro_current;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	256	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	257	static int coro_nready;
215	static struct coro *first;	258	static struct coro *coro_first;
216		259
217	/** lowlevel stuff **********************************************************/	260	/** lowlevel stuff **********************************************************/
		261
		262	static SV *
		263	coro_get_sv (const char *name, int create)
		264	{
		265	#if PERL_VERSION_ATLEAST (5,9,0)
		266	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		267	get_sv (name, create);
		268	#endif
		269	return get_sv (name, create);
		270	}
		271
		272	static SV *
		273	coro_get_av (const char *name, int create)
		274	{
		275	#if PERL_VERSION_ATLEAST (5,9,0)
		276	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		277	get_av (name, create);
		278	#endif
		279	return get_av (name, create);
		280	}
218		281
219	static AV *	282	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	283	coro_clone_padlist (pTHX_ CV *cv)
221	{	284	{
222	AV *padlist = CvPADLIST (cv);	285	AV *padlist = CvPADLIST (cv);
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	349	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	350	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	351	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	352	: 0
290		353
		354	static struct coro *
		355	SvSTATE_ (pTHX_ SV *coro)
		356	{
		357	HV *stash;
		358	MAGIC *mg;
		359
		360	if (SvROK (coro))
		361	coro = SvRV (coro);
		362
		363	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		364	croak ("Coro::State object required");
		365
		366	stash = SvSTASH (coro);
		367	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		368	{
		369	/* very slow, but rare, check */
		370	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		371	croak ("Coro::State object required");
		372	}
		373
		374	mg = CORO_MAGIC (coro);
		375	return (struct coro *)mg->mg_ptr;
		376	}
		377
		378	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		379
291	/* the next two functions merely cache the padlists */	380	/* the next two functions merely cache the padlists */
292	static void	381	static void
293	get_padlist (pTHX_ CV *cv)	382	get_padlist (pTHX_ CV *cv)
294	{	383	{
295	MAGIC *mg = CORO_MAGIC (cv);	384	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	385	AV *av;
297		386
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	387	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	388	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	389	else
301	{	390	{
302	#if CORO_PREFER_PERL_FUNCTIONS	391	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	392	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	404	put_padlist (pTHX_ CV *cv)
316	{	405	{
317	MAGIC *mg = CORO_MAGIC (cv);	406	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	407	AV *av;
319		408
320	if (!mg)	409	if (expect_false (!mg))
321	{	410	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	411	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	412	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	413	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	414	mg->mg_obj = (SV *)newAV ();
326	}	415	}
327		416
328	av = (AV *)mg->mg_obj;	417	av = (AV *)mg->mg_obj;
329		418
330	if (AvFILLp (av) >= AvMAX (av))	419	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	420	av_extend (av, AvMAX (av) + 1);
332		421
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	422	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	423	}
335		424
336	/** load & save, init *******************************************************/	425	/** load & save, init *******************************************************/
337		426
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	427	static void
344	load_perl (pTHX_ Coro__State c)	428	load_perl (pTHX_ Coro__State c)
345	{	429	{
		430	perl_slots *slot = c->slot;
		431	c->slot = 0;
		432
		433	PL_mainstack = c->mainstack;
		434
		435	GvSV (PL_defgv) = slot->defsv;
		436	GvAV (PL_defgv) = slot->defav;
		437	GvSV (PL_errgv) = slot->errsv;
		438	GvSV (irsgv) = slot->irsgv;
		439
346	#define VAR(name,type) PL_ ## name = c->name;	440	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	441	# include "state.h"
348	#undef VAR	442	#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		443
370	{	444	{
371	dSP;	445	dSP;
		446
372	CV *cv;	447	CV *cv;
373		448
374	/* now do the ugly restore mess */	449	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	450	while (expect_true (cv = (CV *)POPs))
376	{	451	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	452	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	453	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	454	CvPADLIST (cv) = (AV *)POPs;
380	}	455	}
…		…
395	/*	470	/*
396	* the worst thing you can imagine happens first - we have to save	471	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	472	* (and reinitialize) all cv's in the whole callchain :(
398	*/	473	*/
399		474
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	475	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	476	/* this loop was inspired by pp_caller */
403	for (;;)	477	for (;;)
404	{	478	{
405	while (cxix >= 0)	479	while (expect_true (cxix >= 0))
406	{	480	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	481	PERL_CONTEXT *cx = &ccstk[cxix--];
408		482
409	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	483	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410	{	484	{
411	CV *cv = cx->blk_sub.cv;	485	CV *cv = cx->blk_sub.cv;
412		486
413	if (CvDEPTH (cv))	487	if (expect_true (CvDEPTH (cv)))
414	{	488	{
415	EXTEND (SP, 3);	489	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	490	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	491	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	492	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	495	get_padlist (aTHX_ cv);
422	}	496	}
423	}	497	}
424	}	498	}
425		499
426	if (top_si->si_type == PERLSI_MAIN)	500	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	501	break;
428		502
429	top_si = top_si->si_prev;	503	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	504	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	505	cxix = top_si->si_cxix;
432	}	506	}
433		507
434	PUTBACK;	508	PUTBACK;
435	}	509	}
436		510
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	511	/* allocate some space on the context stack for our purposes */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	512	{
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	513	/* we manually unroll here, as usually 2 slots is enough */
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	514	int i;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	515	if (SLOT_COUNT >= 1) CXINC;
		516	if (SLOT_COUNT >= 2) CXINC;
		517	if (SLOT_COUNT >= 3) CXINC;
		518	for (i = 3; i < SLOT_COUNT; ++i)
		519	CXINC;
442		520
		521	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		522	}
		523
		524	c->mainstack = PL_mainstack;
		525
		526	{
		527	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		528
		529	slot->defav = GvAV (PL_defgv);
		530	slot->defsv = DEFSV;
		531	slot->errsv = ERRSV;
		532	slot->irsgv = GvSV (irsgv);
		533
443	#define VAR(name,type)c->name = PL_ ## name;	534	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	535	# include "state.h"
445	#undef VAR	536	#undef VAR
		537	}
446	}	538	}
447		539
448	/*	540	/*
449	* allocate various perl stacks. This is an exact copy	541	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	542	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	547	# define coro_init_stacks init_stacks
456	#else	548	#else
457	static void	549	static void
458	coro_init_stacks (pTHX)	550	coro_init_stacks (pTHX)
459	{	551	{
460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	552	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	553	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	554	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	555	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		556
465	PL_stack_base = AvARRAY(PL_curstack);	557	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	558	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	559	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		560
469	New(50,PL_tmps_stack,128,SV*);	561	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	562	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	563	PL_tmps_ix = -1;
472	PL_tmps_max = 128;	564	PL_tmps_max = 32;
473		565
474	New(54,PL_markstack,32,I32);	566	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	567	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 32;	568	PL_markstack_max = PL_markstack + 16;
477		569
478	#ifdef SET_MARK_OFFSET	570	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	571	SET_MARK_OFFSET;
480	#endif	572	#endif
481		573
482	New(54,PL_scopestack,32,I32);	574	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	575	PL_scopestack_ix = 0;
484	PL_scopestack_max = 32;	576	PL_scopestack_max = 8;
485		577
486	New(54,PL_savestack,64,ANY);	578	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	579	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	580	PL_savestack_max = 24;
489		581
490	#if !PERL_VERSION_ATLEAST (5,9,0)	582	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,16,OP*);	583	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	584	PL_retstack_ix = 0;
493	PL_retstack_max = 16;	585	PL_retstack_max = 4;
494	#endif	586	#endif
495	}	587	}
496	#endif	588	#endif
497		589
498	/*	590	/*
499	* destroy the stacks, the callchain etc...	591	* destroy the stacks, the callchain etc...
500	*/	592	*/
501	static void	593	static void
502	coro_destroy_stacks (pTHX)	594	coro_destroy_stacks (pTHX)
503	{	595	{
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)	596	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	597	PL_curstackinfo = PL_curstackinfo->si_next;
523		598
524	while (PL_curstackinfo)	599	while (PL_curstackinfo)
525	{	600	{
…		…
541	Safefree (PL_retstack);	616	Safefree (PL_retstack);
542	#endif	617	#endif
543	}	618	}
544		619
545	static size_t	620	static size_t
546	coro_rss (struct coro *coro)	621	coro_rss (pTHX_ struct coro *coro)
547	{	622	{
548	size_t rss = sizeof (coro);	623	size_t rss = sizeof (*coro);
549		624
550	if (coro->mainstack)	625	if (coro->mainstack)
551	{	626	{
		627	perl_slots tmp_slot;
		628	perl_slots *slot;
		629
		630	if (coro->flags & CF_RUNNING)
		631	{
		632	slot = &tmp_slot;
		633
		634	#define VAR(name,type) slot->name = PL_ ## name;
		635	# include "state.h"
		636	#undef VAR
		637	}
		638	else
		639	slot = coro->slot;
		640
552	rss += sizeof (coro->curstackinfo);	641	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);	642	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	643	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
557
558	rss += coro->tmps_max * sizeof (SV *);	644	rss += slot->tmps_max * sizeof (SV *);
559
560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	645	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
561
562	rss += coro->scopestack_max * sizeof (I32);	646	rss += slot->scopestack_max * sizeof (I32);
563
564	rss += coro->savestack_max * sizeof (ANY);	647	rss += slot->savestack_max * sizeof (ANY);
565		648
566	#if !PERL_VERSION_ATLEAST (5,9,0)	649	#if !PERL_VERSION_ATLEAST (5,9,0)
567	rss += coro->retstack_max * sizeof (OP *);	650	rss += slot->retstack_max * sizeof (OP *);
568	#endif	651	#endif
569	}	652	}
570		653
571	return rss;	654	return rss;
572	}	655	}
573		656
574	/** coroutine stack handling ************************************************/	657	/** coroutine stack handling ************************************************/
575		658
576	static void	659	static void
577	setup_coro (pTHX_ struct coro *coro)	660	coro_setup (pTHX_ struct coro *coro)
578	{	661	{
579	/*	662	/*
580	* emulate part of the perl startup here.	663	* emulate part of the perl startup here.
581	*/	664	*/
582	coro_init_stacks (aTHX);	665	coro_init_stacks (aTHX);
583		666
		667	PL_runops = RUNOPS_DEFAULT;
584	PL_curcop = &PL_compiling;	668	PL_curcop = &PL_compiling;
585	PL_in_eval = EVAL_NULL;	669	PL_in_eval = EVAL_NULL;
586	PL_comppad = 0;	670	PL_comppad = 0;
587	PL_curpm = 0;	671	PL_curpm = 0;
		672	PL_curpad = 0;
588	PL_localizing = 0;	673	PL_localizing = 0;
589	PL_dirty = 0;	674	PL_dirty = 0;
590	PL_restartop = 0;	675	PL_restartop = 0;
		676	PL_diehook = SvREFCNT_inc (sv_diehook);
		677	PL_warnhook = SvREFCNT_inc (sv_warnhook);
		678
		679	GvSV (PL_defgv) = newSV (0);
		680	GvAV (PL_defgv) = coro->args; coro->args = 0;
		681	GvSV (PL_errgv) = newSV (0);
		682	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		683	PL_rs = newSVsv (GvSV (irsgv));
		684	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
591		685
592	{	686	{
593	dSP;	687	dSP;
594	LOGOP myop;	688	LOGOP myop;
595		689
596	SvREFCNT_dec (GvAV (PL_defgv));
597	GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599	Zero (&myop, 1, LOGOP);	690	Zero (&myop, 1, LOGOP);
600	myop.op_next = Nullop;	691	myop.op_next = Nullop;
601	myop.op_flags = OPf_WANT_VOID;	692	myop.op_flags = OPf_WANT_VOID;
602		693
603	PUSHMARK (SP);	694	PUSHMARK (SP);
604	XPUSHs (av_shift (GvAV (PL_defgv)));	695	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605	PUTBACK;	696	PUTBACK;
606	PL_op = (OP *)&myop;	697	PL_op = (OP *)&myop;
607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	698	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608	SPAGAIN;	699	SPAGAIN;
609	}	700	}
610		701
611	ENTER; /* necessary e.g. for dounwind */	702	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		703	}
		704
		705	static void
		706	coro_destroy (pTHX_ struct coro *coro)
		707	{
		708	if (!IN_DESTRUCT)
		709	{
		710	/* restore all saved variables and stuff */
		711	LEAVE_SCOPE (0);
		712	assert (PL_tmps_floor == -1);
		713
		714	/* free all temporaries */
		715	FREETMPS;
		716	assert (PL_tmps_ix == -1);
		717
		718	/* unwind all extra stacks */
		719	POPSTACK_TO (PL_mainstack);
		720
		721	/* unwind main stack */
		722	dounwind (-1);
		723	}
		724
		725	SvREFCNT_dec (GvSV (PL_defgv));
		726	SvREFCNT_dec (GvAV (PL_defgv));
		727	SvREFCNT_dec (GvSV (PL_errgv));
		728	SvREFCNT_dec (PL_defoutgv);
		729	SvREFCNT_dec (PL_rs);
		730	SvREFCNT_dec (GvSV (irsgv));
		731
		732	SvREFCNT_dec (PL_diehook);
		733	SvREFCNT_dec (PL_warnhook);
		734
		735	SvREFCNT_dec (coro->saved_deffh);
		736	SvREFCNT_dec (coro->throw);
		737
		738	coro_destroy_stacks (aTHX);
612	}	739	}
613		740
614	static void	741	static void
615	free_coro_mortal (pTHX)	742	free_coro_mortal (pTHX)
616	{	743	{
617	if (coro_mortal)	744	if (expect_true (coro_mortal))
618	{	745	{
619	SvREFCNT_dec (coro_mortal);	746	SvREFCNT_dec (coro_mortal);
620	coro_mortal = 0;	747	coro_mortal = 0;
621	}	748	}
		749	}
		750
		751	static int
		752	runops_trace (pTHX)
		753	{
		754	COP *oldcop = 0;
		755	int oldcxix = -2;
		756	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		757	coro_cctx *cctx = coro->cctx;
		758
		759	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		760	{
		761	PERL_ASYNC_CHECK ();
		762
		763	if (cctx->flags & CC_TRACE_ALL)
		764	{
		765	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		766	{
		767	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		768	SV **bot, **top;
		769	AV *av = newAV (); /* return values */
		770	SV **cb;
		771	dSP;
		772
		773	GV *gv = CvGV (cx->blk_sub.cv);
		774	SV *fullname = sv_2mortal (newSV (0));
		775	if (isGV (gv))
		776	gv_efullname3 (fullname, gv, 0);
		777
		778	bot = PL_stack_base + cx->blk_oldsp + 1;
		779	top = cx->blk_gimme == G_ARRAY ? SP + 1
		780	: cx->blk_gimme == G_SCALAR ? bot + 1
		781	: bot;
		782
		783	av_extend (av, top - bot);
		784	while (bot < top)
		785	av_push (av, SvREFCNT_inc (*bot++));
		786
		787	PL_runops = RUNOPS_DEFAULT;
		788	ENTER;
		789	SAVETMPS;
		790	EXTEND (SP, 3);
		791	PUSHMARK (SP);
		792	PUSHs (&PL_sv_no);
		793	PUSHs (fullname);
		794	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		795	PUTBACK;
		796	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		797	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		798	SPAGAIN;
		799	FREETMPS;
		800	LEAVE;
		801	PL_runops = runops_trace;
		802	}
		803
		804	if (oldcop != PL_curcop)
		805	{
		806	oldcop = PL_curcop;
		807
		808	if (PL_curcop != &PL_compiling)
		809	{
		810	SV **cb;
		811
		812	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		813	{
		814	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		815
		816	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		817	{
		818	runops_proc_t old_runops = PL_runops;
		819	dSP;
		820	GV *gv = CvGV (cx->blk_sub.cv);
		821	SV *fullname = sv_2mortal (newSV (0));
		822
		823	if (isGV (gv))
		824	gv_efullname3 (fullname, gv, 0);
		825
		826	PL_runops = RUNOPS_DEFAULT;
		827	ENTER;
		828	SAVETMPS;
		829	EXTEND (SP, 3);
		830	PUSHMARK (SP);
		831	PUSHs (&PL_sv_yes);
		832	PUSHs (fullname);
		833	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		834	PUTBACK;
		835	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		836	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		837	SPAGAIN;
		838	FREETMPS;
		839	LEAVE;
		840	PL_runops = runops_trace;
		841	}
		842
		843	oldcxix = cxstack_ix;
		844	}
		845
		846	if (cctx->flags & CC_TRACE_LINE)
		847	{
		848	dSP;
		849
		850	PL_runops = RUNOPS_DEFAULT;
		851	ENTER;
		852	SAVETMPS;
		853	EXTEND (SP, 3);
		854	PL_runops = RUNOPS_DEFAULT;
		855	PUSHMARK (SP);
		856	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		857	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		858	PUTBACK;
		859	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		860	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		861	SPAGAIN;
		862	FREETMPS;
		863	LEAVE;
		864	PL_runops = runops_trace;
		865	}
		866	}
		867	}
		868	}
		869	}
		870
		871	TAINT_NOT;
		872	return 0;
622	}	873	}
623		874
624	/* inject a fake call to Coro::State::_cctx_init into the execution */	875	/* 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 */	876	/* _cctx_init should be careful, as it could be called at almost any time */
626	/* during execution of a perl program */	877	/* during execution of a perl program */
627	static void NOINLINE	878	static void NOINLINE
628	prepare_cctx (pTHX_ coro_cctx *cctx)	879	prepare_cctx (pTHX_ coro_cctx *cctx)
629	{	880	{
630	dSP;	881	dSP;
631	LOGOP myop;	882	LOGOP myop;
		883
		884	PL_top_env = &PL_start_env;
		885
		886	if (cctx->flags & CC_TRACE)
		887	PL_runops = runops_trace;
632		888
633	Zero (&myop, 1, LOGOP);	889	Zero (&myop, 1, LOGOP);
634	myop.op_next = PL_op;	890	myop.op_next = PL_op;
635	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	891	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636		892
…		…
653	dTHX;	909	dTHX;
654		910
655	/* coro_run is the alternative tail of transfer(), so unlock here. */	911	/* coro_run is the alternative tail of transfer(), so unlock here. */
656	UNLOCK;	912	UNLOCK;
657		913
658	PL_top_env = &PL_start_env;	914	/* we now skip the entersub that lead to transfer() */
		915	PL_op = PL_op->op_next;
659		916
660	/* inject a fake subroutine call to cctx_init */	917	/* inject a fake subroutine call to cctx_init */
661	prepare_cctx (aTHX_ (coro_cctx *)arg);	918	prepare_cctx (aTHX_ (coro_cctx *)arg);
662		919
663	/* somebody or something will hit me for both perl_run and PL_restartop */	920	/* somebody or something will hit me for both perl_run and PL_restartop */
…		…
697	# if CORO_STACKGUARD	954	# if CORO_STACKGUARD
698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	955	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699	# endif	956	# endif
700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	957	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	958	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702	cctx->mapped = 1;	959	cctx->flags |= CC_MAPPED;
703	}	960	}
704	else	961	else
705	#endif	962	#endif
706	{	963	{
707	cctx->ssize = coro_stacksize * (long)sizeof (long);	964	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
734	#if CORO_USE_VALGRIND	991	#if CORO_USE_VALGRIND
735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	992	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736	#endif	993	#endif
737		994
738	#if HAVE_MMAP	995	#if HAVE_MMAP
739	if (cctx->mapped)	996	if (cctx->flags & CC_MAPPED)
740	munmap (cctx->sptr, cctx->ssize);	997	munmap (cctx->sptr, cctx->ssize);
741	else	998	else
742	#endif	999	#endif
743	Safefree (cctx->sptr);	1000	Safefree (cctx->sptr);
744		1001
745	Safefree (cctx);	1002	Safefree (cctx);
746	}	1003	}
747		1004
		1005	/* wether this cctx should be destructed */
		1006	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1007
748	static coro_cctx *	1008	static coro_cctx *
749	cctx_get (pTHX)	1009	cctx_get (pTHX)
750	{	1010	{
751	while (cctx_first)	1011	while (expect_true (cctx_first))
752	{	1012	{
753	coro_cctx *cctx = cctx_first;	1013	coro_cctx *cctx = cctx_first;
754	cctx_first = cctx->next;	1014	cctx_first = cctx->next;
755	--cctx_idle;	1015	--cctx_idle;
756		1016
757	if (cctx->ssize >= coro_stacksize)	1017	if (expect_true (!CCTX_EXPIRED (cctx)))
758	return cctx;	1018	return cctx;
759		1019
760	cctx_destroy (cctx);	1020	cctx_destroy (cctx);
761	}	1021	}
762		1022
763	PL_op = PL_op->op_next;
764	return cctx_new ();	1023	return cctx_new ();
765	}	1024	}
766		1025
767	static void	1026	static void
768	cctx_put (coro_cctx *cctx)	1027	cctx_put (coro_cctx *cctx)
769	{	1028	{
770	/* free another cctx if overlimit */	1029	/* free another cctx if overlimit */
771	if (cctx_idle >= MAX_IDLE_CCTX)	1030	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
772	{	1031	{
773	coro_cctx *first = cctx_first;	1032	coro_cctx *first = cctx_first;
774	cctx_first = first->next;	1033	cctx_first = first->next;
775	--cctx_idle;	1034	--cctx_idle;
776		1035
777	assert (!first->inuse);
778	cctx_destroy (first);	1036	cctx_destroy (first);
779	}	1037	}
780		1038
781	++cctx_idle;	1039	++cctx_idle;
782	cctx->next = cctx_first;	1040	cctx->next = cctx_first;
783	cctx_first = cctx;	1041	cctx_first = cctx;
784	}	1042	}
785		1043
786	/** coroutine switching *****************************************************/	1044	/** coroutine switching *****************************************************/
787		1045
788	/* never call directly, always through the coro_state_transfer global variable */	1046	static void
		1047	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1048	{
		1049	if (expect_true (prev != next))
		1050	{
		1051	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1052	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1053
		1054	if (expect_false (next->flags & CF_RUNNING))
		1055	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1056
		1057	if (expect_false (next->flags & CF_DESTROYED))
		1058	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1059
		1060	if (
		1061	#if PERL_VERSION_ATLEAST (5,9,0)
		1062	expect_false (PL_parser)
		1063	#else
		1064	expect_false (PL_lex_state != LEX_NOTPARSING)
		1065	#endif
		1066	)
		1067	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1068	}
		1069	}
		1070
		1071	/* always use the TRANSFER macro */
789	static void NOINLINE	1072	static void NOINLINE
790	transfer (pTHX_ struct coro *prev, struct coro *next)	1073	transfer (pTHX_ struct coro *prev, struct coro *next)
791	{	1074	{
792	dSTACKLEVEL;	1075	dSTACKLEVEL;
793		1076
794	/* sometimes transfer is only called to set idle_sp */	1077	/* sometimes transfer is only called to set idle_sp */
795	if (!next)	1078	if (expect_false (!next))
796	{	1079	{
797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1080	((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 */	1081	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799	}	1082	}
800	else if (prev != next)	1083	else if (expect_true (prev != next))
801	{	1084	{
802	coro_cctx *prev__cctx;	1085	coro_cctx *prev__cctx;
803		1086
804	if (prev->flags & CF_NEW)	1087	if (expect_false (prev->flags & CF_NEW))
805	{	1088	{
806	/* create a new empty context */	1089	/* create a new empty context */
807	Newz (0, prev->cctx, 1, coro_cctx);	1090	Newz (0, prev->cctx, 1, coro_cctx);
808	prev->cctx->inuse = 1;
809	prev->flags &= ~CF_NEW;	1091	prev->flags &= ~CF_NEW;
810	prev->flags |= CF_RUNNING;	1092	prev->flags |= CF_RUNNING;
811	}	1093	}
812		1094
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;	1095	prev->flags &= ~CF_RUNNING;
824	next->flags |= CF_RUNNING;	1096	next->flags |= CF_RUNNING;
825		1097
826	LOCK;	1098	LOCK;
827		1099
828	if (next->flags & CF_NEW)	1100	if (expect_false (next->flags & CF_NEW))
829	{	1101	{
830	/* need to start coroutine */	1102	/* need to start coroutine */
831	next->flags &= ~CF_NEW;	1103	next->flags &= ~CF_NEW;
832	/* first get rid of the old state */	1104	/* first get rid of the old state */
833	save_perl (aTHX_ prev);	1105	save_perl (aTHX_ prev);
834	/* setup coroutine call */	1106	/* setup coroutine call */
835	setup_coro (aTHX_ next);	1107	coro_setup (aTHX_ next);
836	/* need a new stack */
837	assert (!next->cctx);
838	}	1108	}
839	else	1109	else
840	{	1110	{
841	/* coroutine already started */	1111	/* coroutine already started */
842	save_perl (aTHX_ prev);	1112	save_perl (aTHX_ prev);
…		…
844	}	1114	}
845		1115
846	prev__cctx = prev->cctx;	1116	prev__cctx = prev->cctx;
847		1117
848	/* possibly "free" the cctx */	1118	/* possibly "free" the cctx */
849	if (prev__cctx->idle_sp == STACKLEVEL)	1119	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850	{	1120	{
851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1121	/* 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));	1122	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853		1123
854	prev->cctx = 0;	1124	prev->cctx = 0;
855		1125
		1126	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1127	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1128	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1129	next->cctx = cctx_get (aTHX);
		1130
856	cctx_put (prev__cctx);	1131	cctx_put (prev__cctx);
857	prev__cctx->inuse = 0;
858	}	1132	}
859		1133
		1134	++next->usecount;
		1135
860	if (!next->cctx)	1136	if (expect_true (!next->cctx))
861	{
862	next->cctx = cctx_get (aTHX);	1137	next->cctx = cctx_get (aTHX);
863	assert (!next->cctx->inuse);
864	next->cctx->inuse = 1;
865	}
866		1138
867	if (prev__cctx != next->cctx)	1139	if (expect_false (prev__cctx != next->cctx))
868	{	1140	{
869	prev__cctx->top_env = PL_top_env;	1141	prev__cctx->top_env = PL_top_env;
870	PL_top_env = next->cctx->top_env;	1142	PL_top_env = next->cctx->top_env;
871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1143	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872	}	1144	}
873		1145
874	free_coro_mortal (aTHX);	1146	free_coro_mortal (aTHX);
875	UNLOCK;	1147	UNLOCK;
		1148
		1149	if (expect_false (prev->throw || next->throw))
		1150	{
		1151	struct coro *coro = SvSTATE (coro_current);
		1152
		1153	if (coro->throw)
		1154	{
		1155	SV *exception = coro->throw;
		1156	coro->throw = 0;
		1157	sv_setsv (ERRSV, exception);
		1158	croak (0);
		1159	}
		1160	}
876	}	1161	}
877	}	1162	}
878		1163
879	struct transfer_args	1164	struct transfer_args
880	{	1165	{
881	struct coro *prev, *next;	1166	struct coro *prev, *next;
882	};	1167	};
883		1168
884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1169	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1170	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885		1171
886	/** high level stuff ********************************************************/	1172	/** high level stuff ********************************************************/
887		1173
888	static int	1174	static int
889	coro_state_destroy (pTHX_ struct coro *coro)	1175	coro_state_destroy (pTHX_ struct coro *coro)
…		…
906		1192
907	if (coro->mainstack && coro->mainstack != main_mainstack)	1193	if (coro->mainstack && coro->mainstack != main_mainstack)
908	{	1194	{
909	struct coro temp;	1195	struct coro temp;
910		1196
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)	1197	if (coro->flags & CF_RUNNING)
917	croak ("FATAL: tried to destroy currently running coroutine");	1198	croak ("FATAL: tried to destroy currently running coroutine");
918		1199
919	save_perl (aTHX_ &temp);	1200	save_perl (aTHX_ &temp);
920	load_perl (aTHX_ coro);	1201	load_perl (aTHX_ coro);
921		1202
922	coro_destroy_stacks (aTHX);	1203	coro_destroy (aTHX_ coro);
923		1204
924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1205	load_perl (aTHX_ &temp);
925		1206
926	coro->mainstack = 0;	1207	coro->slot = 0;
927	}	1208	}
928		1209
929	cctx_destroy (coro->cctx);	1210	cctx_destroy (coro->cctx);
930	SvREFCNT_dec (coro->args);	1211	SvREFCNT_dec (coro->args);
931		1212
932	if (coro->next) coro->next->prev = coro->prev;	1213	if (coro->next) coro->next->prev = coro->prev;
933	if (coro->prev) coro->prev->next = coro->next;	1214	if (coro->prev) coro->prev->next = coro->next;
934	if (coro == first) first = coro->next;	1215	if (coro == coro_first) coro_first = coro->next;
935		1216
936	return 1;	1217	return 1;
937	}	1218	}
938		1219
939	static int	1220	static int
…		…
972	#else	1253	#else
973	# define MGf_DUP 0	1254	# define MGf_DUP 0
974	#endif	1255	#endif
975	};	1256	};
976		1257
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	1258	static void
1001	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1259	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002	{	1260	{
1003	ta->prev = SvSTATE (prev_sv);	1261	ta->prev = SvSTATE (prev_sv);
1004	ta->next = SvSTATE (next_sv);	1262	ta->next = SvSTATE (next_sv);
		1263	TRANSFER_CHECK (*ta);
1005	}	1264	}
1006		1265
1007	static void	1266	static void
1008	api_transfer (SV *prev_sv, SV *next_sv)	1267	api_transfer (SV *prev_sv, SV *next_sv)
1009	{	1268	{
1010	dTHX;	1269	dTHX;
1011	struct transfer_args ta;	1270	struct transfer_args ta;
1012		1271
1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1272	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014	TRANSFER (ta);	1273	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	}	1274	}
1029		1275
1030	/** Coro ********************************************************************/	1276	/** Coro ********************************************************************/
1031		1277
1032	static void	1278	static void
…		…
1091	{	1337	{
1092	LOCK;	1338	LOCK;
1093	next_sv = coro_deq (aTHX_ PRIO_MIN);	1339	next_sv = coro_deq (aTHX_ PRIO_MIN);
1094		1340
1095	/* nothing to schedule: call the idle handler */	1341	/* nothing to schedule: call the idle handler */
1096	if (!next_sv)	1342	if (expect_false (!next_sv))
1097	{	1343	{
1098	dSP;	1344	dSP;
1099	UNLOCK;	1345	UNLOCK;
1100		1346
1101	ENTER;	1347	ENTER;
…		…
1111	}	1357	}
1112		1358
1113	ta->next = SvSTATE (next_sv);	1359	ta->next = SvSTATE (next_sv);
1114		1360
1115	/* cannot transfer to destroyed coros, skip and look for next */	1361	/* cannot transfer to destroyed coros, skip and look for next */
1116	if (ta->next->flags & CF_DESTROYED)	1362	if (expect_false (ta->next->flags & CF_DESTROYED))
1117	{	1363	{
1118	UNLOCK;	1364	UNLOCK;
1119	SvREFCNT_dec (next_sv);	1365	SvREFCNT_dec (next_sv);
1120	/* coro_nready is already taken care of by destroy */	1366	/* coro_nready is already taken care of by destroy */
1121	continue;	1367	continue;
…		…
1126	break;	1372	break;
1127	}	1373	}
1128		1374
1129	/* free this only after the transfer */	1375	/* free this only after the transfer */
1130	prev_sv = SvRV (coro_current);	1376	prev_sv = SvRV (coro_current);
1131	SvRV_set (coro_current, next_sv);
1132	ta->prev = SvSTATE (prev_sv);	1377	ta->prev = SvSTATE (prev_sv);
1133		1378	TRANSFER_CHECK (*ta);
1134	assert (ta->next->flags & CF_READY);	1379	assert (ta->next->flags & CF_READY);
1135	ta->next->flags &= ~CF_READY;	1380	ta->next->flags &= ~CF_READY;
		1381	SvRV_set (coro_current, next_sv);
1136		1382
1137	LOCK;	1383	LOCK;
1138	free_coro_mortal (aTHX);	1384	free_coro_mortal (aTHX);
1139	coro_mortal = prev_sv;	1385	coro_mortal = prev_sv;
1140	UNLOCK;	1386	UNLOCK;
…		…
1177	dTHX;	1423	dTHX;
1178	struct transfer_args ta;	1424	struct transfer_args ta;
1179		1425
1180	prepare_cede (aTHX_ &ta);	1426	prepare_cede (aTHX_ &ta);
1181		1427
1182	if (ta.prev != ta.next)	1428	if (expect_true (ta.prev != ta.next))
1183	{	1429	{
1184	TRANSFER (ta);	1430	TRANSFER (ta);
1185	return 1;	1431	return 1;
1186	}	1432	}
1187	else	1433	else
…		…
1201	}	1447	}
1202	else	1448	else
1203	return 0;	1449	return 0;
1204	}	1450	}
1205		1451
		1452	static void
		1453	api_trace (SV *coro_sv, int flags)
		1454	{
		1455	dTHX;
		1456	struct coro *coro = SvSTATE (coro_sv);
		1457
		1458	if (flags & CC_TRACE)
		1459	{
		1460	if (!coro->cctx)
		1461	coro->cctx = cctx_new ();
		1462	else if (!(coro->cctx->flags & CC_TRACE))
		1463	croak ("cannot enable tracing on coroutine with custom stack");
		1464
		1465	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1466	}
		1467	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1468	{
		1469	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1470
		1471	if (coro->flags & CF_RUNNING)
		1472	PL_runops = RUNOPS_DEFAULT;
		1473	else
		1474	coro->slot->runops = RUNOPS_DEFAULT;
		1475	}
		1476	}
		1477
1206	MODULE = Coro::State PACKAGE = Coro::State	1478	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207		1479
1208	PROTOTYPES: DISABLE	1480	PROTOTYPES: DISABLE
1209		1481
1210	BOOT:	1482	BOOT:
1211	{	1483	{
1212	#ifdef USE_ITHREADS	1484	#ifdef USE_ITHREADS
1213	MUTEX_INIT (&coro_mutex);	1485	MUTEX_INIT (&coro_mutex);
1214	#endif	1486	#endif
1215	BOOT_PAGESIZE;	1487	BOOT_PAGESIZE;
1216		1488
		1489	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1490	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1491
		1492	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1493	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1494
		1495	if (!PL_diehook) PL_diehook = SvREFCNT_inc (sv_diehook);
		1496	if (!PL_warnhook) PL_warnhook = SvREFCNT_inc (sv_warnhook);
		1497
1217	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1498	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218		1499
1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1500	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1501	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));	1502	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1503	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226		1504
1227	main_mainstack = PL_mainstack;	1505	main_mainstack = PL_mainstack;
1228	main_top_env = PL_top_env;	1506	main_top_env = PL_top_env;
1229		1507
1230	while (main_top_env->je_prev)	1508	while (main_top_env->je_prev)
…		…
1243	struct coro *coro;	1521	struct coro *coro;
1244	HV *hv;	1522	HV *hv;
1245	int i;	1523	int i;
1246		1524
1247	Newz (0, coro, 1, struct coro);	1525	Newz (0, coro, 1, struct coro);
1248	coro->args = newAV ();	1526	coro->args = newAV ();
1249	coro->save = CORO_SAVE_DEF;
1250	coro->flags = CF_NEW;	1527	coro->flags = CF_NEW;
1251		1528
1252	if (first) first->prev = coro;	1529	if (coro_first) coro_first->prev = coro;
1253	coro->next = first;	1530	coro->next = coro_first;
1254	first = coro;	1531	coro_first = coro;
1255		1532
1256	coro->hv = hv = newHV ();	1533	coro->hv = hv = newHV ();
1257	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1534	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));	1535	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259		1536
		1537	av_extend (coro->args, items - 1);
1260	for (i = 1; i < items; i++)	1538	for (i = 1; i < items; i++)
1261	av_push (coro->args, newSVsv (ST (i)));	1539	av_push (coro->args, newSVsv (ST (i)));
1262	}	1540	}
1263	OUTPUT:	1541	OUTPUT:
1264	RETVAL	1542	RETVAL
1265		1543
1266	int	1544	# these not obviously related functions are all rolled into the same xs
1267	save (SV *coro, int new_save = -1)	1545	# function to increase chances that they all will call transfer with the same
1268	CODE:	1546	# 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	1547	void
1285	_set_stacklevel (...)	1548	_set_stacklevel (...)
1286	ALIAS:	1549	ALIAS:
1287	Coro::State::transfer = 1	1550	Coro::State::transfer = 1
1288	Coro::schedule = 2	1551	Coro::schedule = 2
…		…
1322	}	1585	}
1323		1586
1324	BARRIER;	1587	BARRIER;
1325	TRANSFER (ta);	1588	TRANSFER (ta);
1326		1589
1327	if (GIMME_V != G_VOID && ta.next != ta.prev)	1590	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1328	XSRETURN_YES;	1591	XSRETURN_YES;
1329	}	1592	}
1330		1593
1331	bool	1594	bool
1332	_destroy (SV *coro_sv)	1595	_destroy (SV *coro_sv)
…		…
1368	void	1631	void
1369	list ()	1632	list ()
1370	PPCODE:	1633	PPCODE:
1371	{	1634	{
1372	struct coro *coro;	1635	struct coro *coro;
1373	for (coro = first; coro; coro = coro->next)	1636	for (coro = coro_first; coro; coro = coro->next)
1374	if (coro->hv)	1637	if (coro->hv)
1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1638	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376	}	1639	}
1377		1640
1378	void	1641	void
1379	_eval (Coro::State coro, SV *coderef)	1642	call (Coro::State coro, SV *coderef)
		1643	ALIAS:
		1644	eval = 1
1380	CODE:	1645	CODE:
1381	{	1646	{
1382	if (coro->mainstack)	1647	if (coro->mainstack)
1383	{	1648	{
1384	struct coro temp;	1649	struct coro temp;
1385	Zero (&temp, 1, struct coro);
1386	temp.save = CORO_SAVE_ALL;
1387		1650
1388	if (!(coro->flags & CF_RUNNING))	1651	if (!(coro->flags & CF_RUNNING))
1389	{	1652	{
1390	save_perl (aTHX_ &temp);	1653	save_perl (aTHX_ &temp);
1391	load_perl (aTHX_ coro);	1654	load_perl (aTHX_ coro);
…		…
1395	dSP;	1658	dSP;
1396	ENTER;	1659	ENTER;
1397	SAVETMPS;	1660	SAVETMPS;
1398	PUSHMARK (SP);	1661	PUSHMARK (SP);
1399	PUTBACK;	1662	PUTBACK;
		1663
		1664	if (ix)
		1665	eval_sv (coderef, 0);
		1666	else
1400	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1667	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1668
1401	SPAGAIN;	1669	SPAGAIN;
1402	FREETMPS;	1670	FREETMPS;
1403	LEAVE;	1671	LEAVE;
1404	PUTBACK;	1672	PUTBACK;
1405	}	1673	}
…		…
1409	save_perl (aTHX_ coro);	1677	save_perl (aTHX_ coro);
1410	load_perl (aTHX_ &temp);	1678	load_perl (aTHX_ &temp);
1411	}	1679	}
1412	}	1680	}
1413	}	1681	}
1414		1682
1415	SV *	1683	SV *
1416	is_ready (Coro::State coro)	1684	is_ready (Coro::State coro)
1417	PROTOTYPE: $	1685	PROTOTYPE: $
1418	ALIAS:	1686	ALIAS:
1419	is_ready = CF_READY	1687	is_ready = CF_READY
…		…
1423	CODE:	1691	CODE:
1424	RETVAL = boolSV (coro->flags & ix);	1692	RETVAL = boolSV (coro->flags & ix);
1425	OUTPUT:	1693	OUTPUT:
1426	RETVAL	1694	RETVAL
1427		1695
		1696	void
		1697	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1698
		1699	SV *
		1700	has_stack (Coro::State coro)
		1701	PROTOTYPE: $
		1702	CODE:
		1703	RETVAL = boolSV (!!coro->cctx);
		1704	OUTPUT:
		1705	RETVAL
		1706
		1707	int
		1708	is_traced (Coro::State coro)
		1709	PROTOTYPE: $
		1710	CODE:
		1711	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1712	OUTPUT:
		1713	RETVAL
		1714
1428	IV	1715	IV
1429	rss (Coro::State coro)	1716	rss (Coro::State coro)
1430	PROTOTYPE: $	1717	PROTOTYPE: $
		1718	ALIAS:
		1719	usecount = 1
1431	CODE:	1720	CODE:
1432	RETVAL = coro_rss (coro);	1721	switch (ix)
		1722	{
		1723	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1724	case 1: RETVAL = coro->usecount; break;
		1725	}
1433	OUTPUT:	1726	OUTPUT:
1434	RETVAL	1727	RETVAL
1435		1728
1436		1729
1437	MODULE = Coro::State PACKAGE = Coro	1730	MODULE = Coro::State PACKAGE = Coro
1438		1731
1439	BOOT:	1732	BOOT:
1440	{	1733	{
1441	int i;	1734	int i;
1442		1735
		1736	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1737	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1738	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1739
		1740	coro_current = coro_get_sv ("Coro::current", FALSE);
		1741	SvREADONLY_on (coro_current);
		1742
1443	coro_stash = gv_stashpv ("Coro", TRUE);	1743	coro_stash = gv_stashpv ("Coro", TRUE);
1444		1744
1445	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1745	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1746	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1747	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1748	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1749	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1750	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451		1751
1452	coro_current = get_sv ("Coro::current", FALSE);
1453	SvREADONLY_on (coro_current);
1454
1455	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1752	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456	coro_ready[i] = newAV ();	1753	coro_ready[i] = newAV ();
1457		1754
1458	{	1755	{
1459	SV *sv = perl_get_sv("Coro::API", 1);	1756	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1757	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1460		1758
1461	coroapi.schedule = api_schedule;	1759	coroapi.schedule = api_schedule;
1462	coroapi.save = api_save;
1463	coroapi.cede = api_cede;	1760	coroapi.cede = api_cede;
1464	coroapi.cede_notself = api_cede_notself;	1761	coroapi.cede_notself = api_cede_notself;
1465	coroapi.ready = api_ready;	1762	coroapi.ready = api_ready;
1466	coroapi.is_ready = api_is_ready;	1763	coroapi.is_ready = api_is_ready;
1467	coroapi.nready = &coro_nready;	1764	coroapi.nready = &coro_nready;
…		…
1516	CODE:	1813	CODE:
1517	RETVAL = coro_nready;	1814	RETVAL = coro_nready;
1518	OUTPUT:	1815	OUTPUT:
1519	RETVAL	1816	RETVAL
1520		1817
		1818	void
		1819	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1820	PROTOTYPE: $;$
		1821	CODE:
		1822	SvREFCNT_dec (self->throw);
		1823	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1824
		1825	# for async_pool speedup
		1826	void
		1827	_pool_1 (SV *cb)
		1828	CODE:
		1829	{
		1830	struct coro *coro = SvSTATE (coro_current);
		1831	HV *hv = (HV *)SvRV (coro_current);
		1832	AV *defav = GvAV (PL_defgv);
		1833	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1834	AV *invoke_av;
		1835	int i, len;
		1836
		1837	if (!invoke)
		1838	croak ("\3async_pool terminate\2\n");
		1839
		1840	SvREFCNT_dec (coro->saved_deffh);
		1841	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1842
		1843	hv_store (hv, "desc", sizeof ("desc") - 1,
		1844	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1845
		1846	invoke_av = (AV *)SvRV (invoke);
		1847	len = av_len (invoke_av);
		1848
		1849	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1850
		1851	if (len > 0)
		1852	{
		1853	av_fill (defav, len - 1);
		1854	for (i = 0; i < len; ++i)
		1855	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1856	}
		1857
		1858	SvREFCNT_dec (invoke);
		1859	}
		1860
		1861	void
		1862	_pool_2 (SV *cb)
		1863	CODE:
		1864	{
		1865	struct coro *coro = SvSTATE (coro_current);
		1866
		1867	sv_setsv (cb, &PL_sv_undef);
		1868
		1869	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1870	coro->saved_deffh = 0;
		1871
		1872	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1873	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1874	croak ("\3async_pool terminate\2\n");
		1875
		1876	av_clear (GvAV (PL_defgv));
		1877	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1878	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1879
		1880	coro->prio = 0;
		1881
		1882	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1883	api_trace (coro_current, 0);
		1884
		1885	av_push (av_async_pool, newSVsv (coro_current));
		1886	}
		1887
		1888
1521	MODULE = Coro::State PACKAGE = Coro::AIO	1889	MODULE = Coro::State PACKAGE = Coro::AIO
1522		1890
1523	SV *	1891	SV *
1524	_get_state ()	1892	_get_state ()
1525	CODE:	1893	CODE:

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