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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.151 by root, Wed Sep 19 21:39:15 2007 UTC vs.
Revision 1.200 by root, Sun Oct 7 15:08:23 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
…		…
117	#else	130	#else
118	# define LOCK (void)0	131	# define LOCK (void)0
119	# define UNLOCK (void)0	132	# define UNLOCK (void)0
120	#endif	133	#endif
121		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
122	/* helper storage struct for Coro::AIO */	137	/* helper storage struct for Coro::AIO */
123	struct io_state	138	struct io_state
124	{	139	{
125	int errorno;	140	int errorno;
126	I32 laststype;	141	I32 laststype;
…		…
133	static AV *main_mainstack; /* used to differentiate between $main and others */	148	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	149	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	150	static HV *coro_state_stash, *coro_stash;
136	static SV *coro_mortal; /* will be freed after next transfer */	151	static SV *coro_mortal; /* will be freed after next transfer */
137		152
		153	static GV *irsgv; /* $/ */
		154	static GV *stdoutgv; /* *STDOUT */
		155
		156	static HV *hv_sig; /* %SIG */
		157	static SV *sv_diehook;
		158	static SV *sv_warnhook;
		159
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
138	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
139	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
		167
		168	enum {
		169	CC_MAPPED = 0x01,
		170	CC_NOREUSE = 0x02, /* throw this away after tracing */
		171	CC_TRACE = 0x04,
		172	CC_TRACE_SUB = 0x08, /* trace sub calls */
		173	CC_TRACE_LINE = 0x10, /* trace each statement */
		174	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		175	};
140		176
141	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	178	typedef struct coro_cctx {
143	struct coro_cctx *next;	179	struct coro_cctx *next;
144		180
…		…
153	coro_context cctx;	189	coro_context cctx;
154		190
155	#if CORO_USE_VALGRIND	191	#if CORO_USE_VALGRIND
156	int valgrind_id;	192	int valgrind_id;
157	#endif	193	#endif
158	char inuse, mapped;	194	unsigned char flags;
159	} coro_cctx;	195	} coro_cctx;
160		196
161	enum {	197	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	202	};
167		203
		204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		205	typedef struct {
		206	SV *defsv;
		207	AV *defav;
		208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
		214
		215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		216
168	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
169	struct coro {	218	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	220	coro_cctx *cctx;
172		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots *slot; /* basically the saved sp */
		225
173	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
174	AV *args;	227	AV *args;
175	int refcnt;	228	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	229	int flags; /* CF_ flags */
178		230
179	/* optionally saved, might be zero */	231	/* statistics */
180	AV *defav; /* @_ */	232	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		233
191	/* coro process data */	234	/* coro process data */
192	int prio;	235	int prio;
		236	SV *throw;
		237
		238	/* async_pool */
		239	SV *saved_deffh;
193		240
194	/* linked list */	241	/* linked list */
195	struct coro *next, *prev;	242	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */	243	HV *hv; /* the perl hash associated with this coro, if any */
197	};	244	};
…		…
210		257
211	/* for Coro.pm */	258	/* for Coro.pm */
212	static SV *coro_current;	259	static SV *coro_current;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	261	static int coro_nready;
215	static struct coro *first;	262	static struct coro *coro_first;
216		263
217	/** lowlevel stuff **********************************************************/	264	/** lowlevel stuff **********************************************************/
		265
		266	static SV *
		267	coro_get_sv (const char *name, int create)
		268	{
		269	#if PERL_VERSION_ATLEAST (5,9,0)
		270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		271	get_sv (name, create);
		272	#endif
		273	return get_sv (name, create);
		274	}
		275
		276	static AV *
		277	coro_get_av (const char *name, int create)
		278	{
		279	#if PERL_VERSION_ATLEAST (5,9,0)
		280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		281	get_av (name, create);
		282	#endif
		283	return get_av (name, create);
		284	}
		285
		286	static HV *
		287	coro_get_hv (const char *name, int create)
		288	{
		289	#if PERL_VERSION_ATLEAST (5,9,0)
		290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		291	get_hv (name, create);
		292	#endif
		293	return get_hv (name, create);
		294	}
218		295
219	static AV *	296	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
221	{	298	{
222	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	364	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	366	: 0
290		367
		368	static struct coro *
		369	SvSTATE_ (pTHX_ SV *coro)
		370	{
		371	HV *stash;
		372	MAGIC *mg;
		373
		374	if (SvROK (coro))
		375	coro = SvRV (coro);
		376
		377	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		378	croak ("Coro::State object required");
		379
		380	stash = SvSTASH (coro);
		381	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		382	{
		383	/* very slow, but rare, check */
		384	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		385	croak ("Coro::State object required");
		386	}
		387
		388	mg = CORO_MAGIC (coro);
		389	return (struct coro *)mg->mg_ptr;
		390	}
		391
		392	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		393
291	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
292	static void	395	static void
293	get_padlist (pTHX_ CV *cv)	396	get_padlist (pTHX_ CV *cv)
294	{	397	{
295	MAGIC *mg = CORO_MAGIC (cv);	398	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	399	AV *av;
297		400
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	403	else
301	{	404	{
302	#if CORO_PREFER_PERL_FUNCTIONS	405	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	406	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	418	put_padlist (pTHX_ CV *cv)
316	{	419	{
317	MAGIC *mg = CORO_MAGIC (cv);	420	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	421	AV *av;
319		422
320	if (!mg)	423	if (expect_false (!mg))
321	{	424	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
326	}	429	}
327		430
328	av = (AV *)mg->mg_obj;	431	av = (AV *)mg->mg_obj;
329		432
330	if (AvFILLp (av) >= AvMAX (av))	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	434	av_extend (av, AvMAX (av) + 1);
332		435
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	437	}
335		438
336	/** load & save, init *******************************************************/	439	/** load & save, init *******************************************************/
337		440
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	441	static void
344	load_perl (pTHX_ Coro__State c)	442	load_perl (pTHX_ Coro__State c)
345	{	443	{
		444	perl_slots *slot = c->slot;
		445	c->slot = 0;
		446
		447	PL_mainstack = c->mainstack;
		448
		449	GvSV (PL_defgv) = slot->defsv;
		450	GvAV (PL_defgv) = slot->defav;
		451	GvSV (PL_errgv) = slot->errsv;
		452	GvSV (irsgv) = slot->irsgv;
		453
346	#define VAR(name,type) PL_ ## name = c->name;	454	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	455	# include "state.h"
348	#undef VAR	456	#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		457
370	{	458	{
371	dSP;	459	dSP;
		460
372	CV *cv;	461	CV *cv;
373		462
374	/* now do the ugly restore mess */	463	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	464	while (expect_true (cv = (CV *)POPs))
376	{	465	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	466	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	467	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	468	CvPADLIST (cv) = (AV *)POPs;
380	}	469	}
…		…
395	/*	484	/*
396	* the worst thing you can imagine happens first - we have to save	485	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	486	* (and reinitialize) all cv's in the whole callchain :(
398	*/	487	*/
399		488
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	489	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	490	/* this loop was inspired by pp_caller */
403	for (;;)	491	for (;;)
404	{	492	{
405	while (cxix >= 0)	493	while (expect_true (cxix >= 0))
406	{	494	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	495	PERL_CONTEXT *cx = &ccstk[cxix--];
408		496
409	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	497	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410	{	498	{
411	CV *cv = cx->blk_sub.cv;	499	CV *cv = cx->blk_sub.cv;
412		500
413	if (CvDEPTH (cv))	501	if (expect_true (CvDEPTH (cv)))
414	{	502	{
415	EXTEND (SP, 3);	503	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	504	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	505	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	506	PUSHs ((SV *)cv);
…		…
421	get_padlist (aTHX_ cv);	509	get_padlist (aTHX_ cv);
422	}	510	}
423	}	511	}
424	}	512	}
425		513
426	if (top_si->si_type == PERLSI_MAIN)	514	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	515	break;
428		516
429	top_si = top_si->si_prev;	517	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	518	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	519	cxix = top_si->si_cxix;
432	}	520	}
433		521
434	PUTBACK;	522	PUTBACK;
435	}	523	}
436		524
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	525	/* allocate some space on the context stack for our purposes */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	526	{
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	528	int i;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
		530	if (SLOT_COUNT >= 2) CXINC;
		531	if (SLOT_COUNT >= 3) CXINC;
		532	for (i = 3; i < SLOT_COUNT; ++i)
		533	CXINC;
442		534
		535	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		536	}
		537
		538	c->mainstack = PL_mainstack;
		539
		540	{
		541	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		542
		543	slot->defav = GvAV (PL_defgv);
		544	slot->defsv = DEFSV;
		545	slot->errsv = ERRSV;
		546	slot->irsgv = GvSV (irsgv);
		547
443	#define VAR(name,type)c->name = PL_ ## name;	548	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	549	# include "state.h"
445	#undef VAR	550	#undef VAR
		551	}
446	}	552	}
447		553
448	/*	554	/*
449	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	561	# define coro_init_stacks init_stacks
456	#else	562	#else
457	static void	563	static void
458	coro_init_stacks (pTHX)	564	coro_init_stacks (pTHX)
459	{	565	{
460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	566	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		570
465	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		574
469	New(50,PL_tmps_stack,128,SV*);	575	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
472	PL_tmps_max = 128;	578	PL_tmps_max = 32;
473		579
474	New(54,PL_markstack,32,I32);	580	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 32;	582	PL_markstack_max = PL_markstack + 16;
477		583
478	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
480	#endif	586	#endif
481		587
482	New(54,PL_scopestack,32,I32);	588	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
484	PL_scopestack_max = 32;	590	PL_scopestack_max = 8;
485		591
486	New(54,PL_savestack,64,ANY);	592	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
488	PL_savestack_max = 64;	594	PL_savestack_max = 24;
489		595
490	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
491	New(54,PL_retstack,16,OP*);	597	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
493	PL_retstack_max = 16;	599	PL_retstack_max = 4;
494	#endif	600	#endif
495	}	601	}
496	#endif	602	#endif
497		603
498	/*	604	/*
499	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
500	*/	606	*/
501	static void	607	static void
502	coro_destroy_stacks (pTHX)	608	coro_destroy_stacks (pTHX)
503	{	609	{
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)	610	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
523		612
524	while (PL_curstackinfo)	613	while (PL_curstackinfo)
525	{	614	{
…		…
540	#if !PERL_VERSION_ATLEAST (5,9,0)	629	#if !PERL_VERSION_ATLEAST (5,9,0)
541	Safefree (PL_retstack);	630	Safefree (PL_retstack);
542	#endif	631	#endif
543	}	632	}
544		633
		634	static size_t
		635	coro_rss (pTHX_ struct coro *coro)
		636	{
		637	size_t rss = sizeof (*coro);
		638
		639	if (coro->mainstack)
		640	{
		641	perl_slots tmp_slot;
		642	perl_slots *slot;
		643
		644	if (coro->flags & CF_RUNNING)
		645	{
		646	slot = &tmp_slot;
		647
		648	#define VAR(name,type) slot->name = PL_ ## name;
		649	# include "state.h"
		650	#undef VAR
		651	}
		652	else
		653	slot = coro->slot;
		654
		655	rss += sizeof (slot->curstackinfo);
		656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		658	rss += slot->tmps_max * sizeof (SV *);
		659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		660	rss += slot->scopestack_max * sizeof (I32);
		661	rss += slot->savestack_max * sizeof (ANY);
		662
		663	#if !PERL_VERSION_ATLEAST (5,9,0)
		664	rss += slot->retstack_max * sizeof (OP *);
		665	#endif
		666	}
		667
		668	return rss;
		669	}
		670
545	/** coroutine stack handling ************************************************/	671	/** coroutine stack handling ************************************************/
546		672
547	static void	673	static void
548	setup_coro (pTHX_ struct coro *coro)	674	coro_setup (pTHX_ struct coro *coro)
549	{	675	{
550	/*	676	/*
551	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
552	*/	678	*/
553	coro_init_stacks (aTHX);	679	coro_init_stacks (aTHX);
554		680
		681	PL_runops = RUNOPS_DEFAULT;
555	PL_curcop = &PL_compiling;	682	PL_curcop = &PL_compiling;
556	PL_in_eval = EVAL_NULL;	683	PL_in_eval = EVAL_NULL;
557	PL_comppad = 0;	684	PL_comppad = 0;
558	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
559	PL_localizing = 0;	687	PL_localizing = 0;
560	PL_dirty = 0;	688	PL_dirty = 0;
561	PL_restartop = 0;	689	PL_restartop = 0;
		690	SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		691	SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		692
		693	GvSV (PL_defgv) = newSV (0);
		694	GvAV (PL_defgv) = coro->args; coro->args = 0;
		695	GvSV (PL_errgv) = newSV (0);
		696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		697	PL_rs = newSVsv (GvSV (irsgv));
		698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
562		699
563	{	700	{
564	dSP;	701	dSP;
565	LOGOP myop;	702	LOGOP myop;
566		703
567	SvREFCNT_dec (GvAV (PL_defgv));
568	GvAV (PL_defgv) = coro->args; coro->args = 0;
569
570	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
571	myop.op_next = Nullop;	705	myop.op_next = Nullop;
572	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
573		707
574	PUSHMARK (SP);	708	PUSHMARK (SP);
575	XPUSHs (av_shift (GvAV (PL_defgv)));	709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
576	PUTBACK;	710	PUTBACK;
577	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
578	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
579	SPAGAIN;	713	SPAGAIN;
580	}	714	}
581		715
582	ENTER; /* necessary e.g. for dounwind */	716	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		717	}
		718
		719	static void
		720	coro_destroy (pTHX_ struct coro *coro)
		721	{
		722	if (!IN_DESTRUCT)
		723	{
		724	/* restore all saved variables and stuff */
		725	LEAVE_SCOPE (0);
		726	assert (PL_tmps_floor == -1);
		727
		728	/* free all temporaries */
		729	FREETMPS;
		730	assert (PL_tmps_ix == -1);
		731
		732	/* unwind all extra stacks */
		733	POPSTACK_TO (PL_mainstack);
		734
		735	/* unwind main stack */
		736	dounwind (-1);
		737	}
		738
		739	SvREFCNT_dec (GvSV (PL_defgv));
		740	SvREFCNT_dec (GvAV (PL_defgv));
		741	SvREFCNT_dec (GvSV (PL_errgv));
		742	SvREFCNT_dec (PL_defoutgv);
		743	SvREFCNT_dec (PL_rs);
		744	SvREFCNT_dec (GvSV (irsgv));
		745
		746	SvREFCNT_dec (PL_diehook);
		747	SvREFCNT_dec (PL_warnhook);
		748
		749	SvREFCNT_dec (coro->saved_deffh);
		750	SvREFCNT_dec (coro->throw);
		751
		752	coro_destroy_stacks (aTHX);
583	}	753	}
584		754
585	static void	755	static void
586	free_coro_mortal (pTHX)	756	free_coro_mortal (pTHX)
587	{	757	{
588	if (coro_mortal)	758	if (expect_true (coro_mortal))
589	{	759	{
590	SvREFCNT_dec (coro_mortal);	760	SvREFCNT_dec (coro_mortal);
591	coro_mortal = 0;	761	coro_mortal = 0;
592	}	762	}
		763	}
		764
		765	static int
		766	runops_trace (pTHX)
		767	{
		768	COP *oldcop = 0;
		769	int oldcxix = -2;
		770	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		771	coro_cctx *cctx = coro->cctx;
		772
		773	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		774	{
		775	PERL_ASYNC_CHECK ();
		776
		777	if (cctx->flags & CC_TRACE_ALL)
		778	{
		779	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		780	{
		781	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		782	SV **bot, **top;
		783	AV *av = newAV (); /* return values */
		784	SV **cb;
		785	dSP;
		786
		787	GV *gv = CvGV (cx->blk_sub.cv);
		788	SV *fullname = sv_2mortal (newSV (0));
		789	if (isGV (gv))
		790	gv_efullname3 (fullname, gv, 0);
		791
		792	bot = PL_stack_base + cx->blk_oldsp + 1;
		793	top = cx->blk_gimme == G_ARRAY ? SP + 1
		794	: cx->blk_gimme == G_SCALAR ? bot + 1
		795	: bot;
		796
		797	av_extend (av, top - bot);
		798	while (bot < top)
		799	av_push (av, SvREFCNT_inc (*bot++));
		800
		801	PL_runops = RUNOPS_DEFAULT;
		802	ENTER;
		803	SAVETMPS;
		804	EXTEND (SP, 3);
		805	PUSHMARK (SP);
		806	PUSHs (&PL_sv_no);
		807	PUSHs (fullname);
		808	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		809	PUTBACK;
		810	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		811	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		812	SPAGAIN;
		813	FREETMPS;
		814	LEAVE;
		815	PL_runops = runops_trace;
		816	}
		817
		818	if (oldcop != PL_curcop)
		819	{
		820	oldcop = PL_curcop;
		821
		822	if (PL_curcop != &PL_compiling)
		823	{
		824	SV **cb;
		825
		826	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		827	{
		828	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		829
		830	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		831	{
		832	runops_proc_t old_runops = PL_runops;
		833	dSP;
		834	GV *gv = CvGV (cx->blk_sub.cv);
		835	SV *fullname = sv_2mortal (newSV (0));
		836
		837	if (isGV (gv))
		838	gv_efullname3 (fullname, gv, 0);
		839
		840	PL_runops = RUNOPS_DEFAULT;
		841	ENTER;
		842	SAVETMPS;
		843	EXTEND (SP, 3);
		844	PUSHMARK (SP);
		845	PUSHs (&PL_sv_yes);
		846	PUSHs (fullname);
		847	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		848	PUTBACK;
		849	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		850	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		851	SPAGAIN;
		852	FREETMPS;
		853	LEAVE;
		854	PL_runops = runops_trace;
		855	}
		856
		857	oldcxix = cxstack_ix;
		858	}
		859
		860	if (cctx->flags & CC_TRACE_LINE)
		861	{
		862	dSP;
		863
		864	PL_runops = RUNOPS_DEFAULT;
		865	ENTER;
		866	SAVETMPS;
		867	EXTEND (SP, 3);
		868	PL_runops = RUNOPS_DEFAULT;
		869	PUSHMARK (SP);
		870	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		871	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		872	PUTBACK;
		873	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		874	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		875	SPAGAIN;
		876	FREETMPS;
		877	LEAVE;
		878	PL_runops = runops_trace;
		879	}
		880	}
		881	}
		882	}
		883	}
		884
		885	TAINT_NOT;
		886	return 0;
593	}	887	}
594		888
595	/* inject a fake call to Coro::State::_cctx_init into the execution */	889	/* inject a fake call to Coro::State::_cctx_init into the execution */
596	/* _cctx_init should be careful, as it could be called at almost any time */	890	/* _cctx_init should be careful, as it could be called at almost any time */
597	/* during execution of a perl program */	891	/* during execution of a perl program */
598	static void NOINLINE	892	static void NOINLINE
599	prepare_cctx (pTHX_ coro_cctx *cctx)	893	prepare_cctx (pTHX_ coro_cctx *cctx)
600	{	894	{
601	dSP;	895	dSP;
602	LOGOP myop;	896	LOGOP myop;
		897
		898	PL_top_env = &PL_start_env;
		899
		900	if (cctx->flags & CC_TRACE)
		901	PL_runops = runops_trace;
603		902
604	Zero (&myop, 1, LOGOP);	903	Zero (&myop, 1, LOGOP);
605	myop.op_next = PL_op;	904	myop.op_next = PL_op;
606	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	905	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
607		906
…		…
624	dTHX;	923	dTHX;
625		924
626	/* coro_run is the alternative tail of transfer(), so unlock here. */	925	/* coro_run is the alternative tail of transfer(), so unlock here. */
627	UNLOCK;	926	UNLOCK;
628		927
629	PL_top_env = &PL_start_env;	928	/* we now skip the entersub that lead to transfer() */
		929	PL_op = PL_op->op_next;
630		930
631	/* inject a fake subroutine call to cctx_init */	931	/* inject a fake subroutine call to cctx_init */
632	prepare_cctx (aTHX_ (coro_cctx *)arg);	932	prepare_cctx (aTHX_ (coro_cctx *)arg);
633		933
634	/* somebody or something will hit me for both perl_run and PL_restartop */	934	/* somebody or something will hit me for both perl_run and PL_restartop */
…		…
668	# if CORO_STACKGUARD	968	# if CORO_STACKGUARD
669	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
670	# endif	970	# endif
671	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
672	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
673	cctx->mapped = 1;	973	cctx->flags |= CC_MAPPED;
674	}	974	}
675	else	975	else
676	#endif	976	#endif
677	{	977	{
678	cctx->ssize = coro_stacksize * (long)sizeof (long);	978	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
705	#if CORO_USE_VALGRIND	1005	#if CORO_USE_VALGRIND
706	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
707	#endif	1007	#endif
708		1008
709	#if HAVE_MMAP	1009	#if HAVE_MMAP
710	if (cctx->mapped)	1010	if (cctx->flags & CC_MAPPED)
711	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
712	else	1012	else
713	#endif	1013	#endif
714	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
715		1015
716	Safefree (cctx);	1016	Safefree (cctx);
717	}	1017	}
718		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1021
719	static coro_cctx *	1022	static coro_cctx *
720	cctx_get (pTHX)	1023	cctx_get (pTHX)
721	{	1024	{
722	while (cctx_first)	1025	while (expect_true (cctx_first))
723	{	1026	{
724	coro_cctx *cctx = cctx_first;	1027	coro_cctx *cctx = cctx_first;
725	cctx_first = cctx->next;	1028	cctx_first = cctx->next;
726	--cctx_idle;	1029	--cctx_idle;
727		1030
728	if (cctx->ssize >= coro_stacksize)	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
729	return cctx;	1032	return cctx;
730		1033
731	cctx_destroy (cctx);	1034	cctx_destroy (cctx);
732	}	1035	}
733		1036
734	PL_op = PL_op->op_next;
735	return cctx_new ();	1037	return cctx_new ();
736	}	1038	}
737		1039
738	static void	1040	static void
739	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
740	{	1042	{
741	/* free another cctx if overlimit */	1043	/* free another cctx if overlimit */
742	if (cctx_idle >= MAX_IDLE_CCTX)	1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
743	{	1045	{
744	coro_cctx *first = cctx_first;	1046	coro_cctx *first = cctx_first;
745	cctx_first = first->next;	1047	cctx_first = first->next;
746	--cctx_idle;	1048	--cctx_idle;
747		1049
748	assert (!first->inuse);
749	cctx_destroy (first);	1050	cctx_destroy (first);
750	}	1051	}
751		1052
752	++cctx_idle;	1053	++cctx_idle;
753	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
754	cctx_first = cctx;	1055	cctx_first = cctx;
755	}	1056	}
756		1057
757	/** coroutine switching *****************************************************/	1058	/** coroutine switching *****************************************************/
758		1059
759	/* never call directly, always through the coro_state_transfer global variable */	1060	static void
		1061	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1062	{
		1063	if (expect_true (prev != next))
		1064	{
		1065	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1066	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1067
		1068	if (expect_false (next->flags & CF_RUNNING))
		1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1070
		1071	if (expect_false (next->flags & CF_DESTROYED))
		1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1073
		1074	if (
		1075	#if PERL_VERSION_ATLEAST (5,9,0)
		1076	expect_false (PL_parser)
		1077	#else
		1078	expect_false (PL_lex_state != LEX_NOTPARSING)
		1079	#endif
		1080	)
		1081	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1082	}
		1083	}
		1084
		1085	/* always use the TRANSFER macro */
760	static void NOINLINE	1086	static void NOINLINE
761	transfer (pTHX_ struct coro *prev, struct coro *next)	1087	transfer (pTHX_ struct coro *prev, struct coro *next)
762	{	1088	{
763	dSTACKLEVEL;	1089	dSTACKLEVEL;
764		1090
765	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
766	if (!next)	1092	if (expect_false (!next))
767	{	1093	{
768	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
769	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1095	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
770	}	1096	}
771	else if (prev != next)	1097	else if (expect_true (prev != next))
772	{	1098	{
773	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
774		1100
775	if (prev->flags & CF_NEW)	1101	if (expect_false (prev->flags & CF_NEW))
776	{	1102	{
777	/* create a new empty context */	1103	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);	1104	Newz (0, prev->cctx, 1, coro_cctx);
779	prev->cctx->inuse = 1;
780	prev->flags &= ~CF_NEW;	1105	prev->flags &= ~CF_NEW;
781	prev->flags |= CF_RUNNING;	1106	prev->flags |= CF_RUNNING;
782	}	1107	}
783		1108
784	/*TODO: must not croak here */
785	if (!prev->flags & CF_RUNNING)
786	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
787
788	if (next->flags & CF_RUNNING)
789	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
790
791	if (next->flags & CF_DESTROYED)
792	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
793
794	prev->flags &= ~CF_RUNNING;	1109	prev->flags &= ~CF_RUNNING;
795	next->flags |= CF_RUNNING;	1110	next->flags |= CF_RUNNING;
796		1111
797	LOCK;	1112	LOCK;
798		1113
799	if (next->flags & CF_NEW)	1114	if (expect_false (next->flags & CF_NEW))
800	{	1115	{
801	/* need to start coroutine */	1116	/* need to start coroutine */
802	next->flags &= ~CF_NEW;	1117	next->flags &= ~CF_NEW;
803	/* first get rid of the old state */	1118	/* first get rid of the old state */
804	save_perl (aTHX_ prev);	1119	save_perl (aTHX_ prev);
805	/* setup coroutine call */	1120	/* setup coroutine call */
806	setup_coro (aTHX_ next);	1121	coro_setup (aTHX_ next);
807	/* need a new stack */
808	assert (!next->cctx);
809	}	1122	}
810	else	1123	else
811	{	1124	{
812	/* coroutine already started */	1125	/* coroutine already started */
813	save_perl (aTHX_ prev);	1126	save_perl (aTHX_ prev);
…		…
815	}	1128	}
816		1129
817	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
818		1131
819	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
820	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
821	{	1134	{
822	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
823	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
824		1137
825	prev->cctx = 0;	1138	prev->cctx = 0;
826		1139
		1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1143	next->cctx = cctx_get (aTHX);
		1144
827	cctx_put (prev__cctx);	1145	cctx_put (prev__cctx);
828	prev__cctx->inuse = 0;
829	}	1146	}
830		1147
		1148	++next->usecount;
		1149
831	if (!next->cctx)	1150	if (expect_true (!next->cctx))
832	{
833	next->cctx = cctx_get (aTHX);	1151	next->cctx = cctx_get (aTHX);
834	assert (!next->cctx->inuse);
835	next->cctx->inuse = 1;
836	}
837		1152
838	if (prev__cctx != next->cctx)	1153	if (expect_false (prev__cctx != next->cctx))
839	{	1154	{
840	prev__cctx->top_env = PL_top_env;	1155	prev__cctx->top_env = PL_top_env;
841	PL_top_env = next->cctx->top_env;	1156	PL_top_env = next->cctx->top_env;
842	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1157	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
843	}	1158	}
844		1159
845	free_coro_mortal (aTHX);	1160	free_coro_mortal (aTHX);
846	UNLOCK;	1161	UNLOCK;
		1162
		1163	if (expect_false (prev->throw || next->throw))
		1164	{
		1165	struct coro *coro = SvSTATE (coro_current);
		1166
		1167	if (coro->throw)
		1168	{
		1169	SV *exception = coro->throw;
		1170	coro->throw = 0;
		1171	sv_setsv (ERRSV, exception);
		1172	croak (0);
		1173	}
		1174	}
847	}	1175	}
848	}	1176	}
849		1177
850	struct transfer_args	1178	struct transfer_args
851	{	1179	{
852	struct coro *prev, *next;	1180	struct coro *prev, *next;
853	};	1181	};
854		1182
855	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1183	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1184	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
856		1185
857	/** high level stuff ********************************************************/	1186	/** high level stuff ********************************************************/
858		1187
859	static int	1188	static int
860	coro_state_destroy (pTHX_ struct coro *coro)	1189	coro_state_destroy (pTHX_ struct coro *coro)
…		…
877		1206
878	if (coro->mainstack && coro->mainstack != main_mainstack)	1207	if (coro->mainstack && coro->mainstack != main_mainstack)
879	{	1208	{
880	struct coro temp;	1209	struct coro temp;
881		1210
882	assert (!(coro->flags & CF_RUNNING));
883
884	Zero (&temp, 1, struct coro);
885	temp.save = CORO_SAVE_ALL;
886
887	if (coro->flags & CF_RUNNING)	1211	if (coro->flags & CF_RUNNING)
888	croak ("FATAL: tried to destroy currently running coroutine");	1212	croak ("FATAL: tried to destroy currently running coroutine");
889		1213
890	save_perl (aTHX_ &temp);	1214	save_perl (aTHX_ &temp);
891	load_perl (aTHX_ coro);	1215	load_perl (aTHX_ coro);
892		1216
893	coro_destroy_stacks (aTHX);	1217	coro_destroy (aTHX_ coro);
894		1218
895	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1219	load_perl (aTHX_ &temp);
896		1220
897	coro->mainstack = 0;	1221	coro->slot = 0;
898	}	1222	}
899		1223
900	cctx_destroy (coro->cctx);	1224	cctx_destroy (coro->cctx);
901	SvREFCNT_dec (coro->args);	1225	SvREFCNT_dec (coro->args);
902		1226
903	if (coro->next) coro->next->prev = coro->prev;	1227	if (coro->next) coro->next->prev = coro->prev;
904	if (coro->prev) coro->prev->next = coro->next;	1228	if (coro->prev) coro->prev->next = coro->next;
905	if (coro == first) first = coro->next;	1229	if (coro == coro_first) coro_first = coro->next;
906		1230
907	return 1;	1231	return 1;
908	}	1232	}
909		1233
910	static int	1234	static int
…		…
943	#else	1267	#else
944	# define MGf_DUP 0	1268	# define MGf_DUP 0
945	#endif	1269	#endif
946	};	1270	};
947		1271
948	static struct coro *
949	SvSTATE_ (pTHX_ SV *coro)
950	{
951	HV *stash;
952	MAGIC *mg;
953
954	if (SvROK (coro))
955	coro = SvRV (coro);
956
957	stash = SvSTASH (coro);
958	if (stash != coro_stash && stash != coro_state_stash)
959	{
960	/* very slow, but rare, check */
961	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
962	croak ("Coro::State object required");
963	}
964
965	mg = CORO_MAGIC (coro);
966	return (struct coro *)mg->mg_ptr;
967	}
968
969	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
970
971	static void	1272	static void
972	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1273	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
973	{	1274	{
974	ta->prev = SvSTATE (prev_sv);	1275	ta->prev = SvSTATE (prev_sv);
975	ta->next = SvSTATE (next_sv);	1276	ta->next = SvSTATE (next_sv);
		1277	TRANSFER_CHECK (*ta);
976	}	1278	}
977		1279
978	static void	1280	static void
979	api_transfer (SV *prev_sv, SV *next_sv)	1281	api_transfer (SV *prev_sv, SV *next_sv)
980	{	1282	{
981	dTHX;	1283	dTHX;
982	struct transfer_args ta;	1284	struct transfer_args ta;
983		1285
984	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1286	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
985	TRANSFER (ta);	1287	TRANSFER (ta);
986	}
987
988	static int
989	api_save (SV *coro_sv, int new_save)
990	{
991	dTHX;
992	struct coro *coro = SvSTATE (coro_sv);
993	int old_save = coro->save;
994
995	if (new_save >= 0)
996	coro->save = new_save;
997
998	return old_save;
999	}	1288	}
1000		1289
1001	/** Coro ********************************************************************/	1290	/** Coro ********************************************************************/
1002		1291
1003	static void	1292	static void
…		…
1062	{	1351	{
1063	LOCK;	1352	LOCK;
1064	next_sv = coro_deq (aTHX_ PRIO_MIN);	1353	next_sv = coro_deq (aTHX_ PRIO_MIN);
1065		1354
1066	/* nothing to schedule: call the idle handler */	1355	/* nothing to schedule: call the idle handler */
1067	if (!next_sv)	1356	if (expect_false (!next_sv))
1068	{	1357	{
1069	dSP;	1358	dSP;
1070	UNLOCK;	1359	UNLOCK;
1071		1360
1072	ENTER;	1361	ENTER;
…		…
1082	}	1371	}
1083		1372
1084	ta->next = SvSTATE (next_sv);	1373	ta->next = SvSTATE (next_sv);
1085		1374
1086	/* cannot transfer to destroyed coros, skip and look for next */	1375	/* cannot transfer to destroyed coros, skip and look for next */
1087	if (ta->next->flags & CF_DESTROYED)	1376	if (expect_false (ta->next->flags & CF_DESTROYED))
1088	{	1377	{
1089	UNLOCK;	1378	UNLOCK;
1090	SvREFCNT_dec (next_sv);	1379	SvREFCNT_dec (next_sv);
1091	/* coro_nready is already taken care of by destroy */	1380	/* coro_nready is already taken care of by destroy */
1092	continue;	1381	continue;
…		…
1097	break;	1386	break;
1098	}	1387	}
1099		1388
1100	/* free this only after the transfer */	1389	/* free this only after the transfer */
1101	prev_sv = SvRV (coro_current);	1390	prev_sv = SvRV (coro_current);
1102	SvRV_set (coro_current, next_sv);
1103	ta->prev = SvSTATE (prev_sv);	1391	ta->prev = SvSTATE (prev_sv);
1104		1392	TRANSFER_CHECK (*ta);
1105	assert (ta->next->flags & CF_READY);	1393	assert (ta->next->flags & CF_READY);
1106	ta->next->flags &= ~CF_READY;	1394	ta->next->flags &= ~CF_READY;
		1395	SvRV_set (coro_current, next_sv);
1107		1396
1108	LOCK;	1397	LOCK;
1109	free_coro_mortal (aTHX);	1398	free_coro_mortal (aTHX);
1110	coro_mortal = prev_sv;	1399	coro_mortal = prev_sv;
1111	UNLOCK;	1400	UNLOCK;
…		…
1148	dTHX;	1437	dTHX;
1149	struct transfer_args ta;	1438	struct transfer_args ta;
1150		1439
1151	prepare_cede (aTHX_ &ta);	1440	prepare_cede (aTHX_ &ta);
1152		1441
1153	if (ta.prev != ta.next)	1442	if (expect_true (ta.prev != ta.next))
1154	{	1443	{
1155	TRANSFER (ta);	1444	TRANSFER (ta);
1156	return 1;	1445	return 1;
1157	}	1446	}
1158	else	1447	else
…		…
1172	}	1461	}
1173	else	1462	else
1174	return 0;	1463	return 0;
1175	}	1464	}
1176		1465
		1466	static void
		1467	api_trace (SV *coro_sv, int flags)
		1468	{
		1469	dTHX;
		1470	struct coro *coro = SvSTATE (coro_sv);
		1471
		1472	if (flags & CC_TRACE)
		1473	{
		1474	if (!coro->cctx)
		1475	coro->cctx = cctx_new ();
		1476	else if (!(coro->cctx->flags & CC_TRACE))
		1477	croak ("cannot enable tracing on coroutine with custom stack");
		1478
		1479	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1480	}
		1481	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1482	{
		1483	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1484
		1485	if (coro->flags & CF_RUNNING)
		1486	PL_runops = RUNOPS_DEFAULT;
		1487	else
		1488	coro->slot->runops = RUNOPS_DEFAULT;
		1489	}
		1490	}
		1491
1177	MODULE = Coro::State PACKAGE = Coro::State	1492	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1178		1493
1179	PROTOTYPES: DISABLE	1494	PROTOTYPES: DISABLE
1180		1495
1181	BOOT:	1496	BOOT:
1182	{	1497	{
1183	#ifdef USE_ITHREADS	1498	#ifdef USE_ITHREADS
1184	MUTEX_INIT (&coro_mutex);	1499	MUTEX_INIT (&coro_mutex);
1185	#endif	1500	#endif
1186	BOOT_PAGESIZE;	1501	BOOT_PAGESIZE;
1187		1502
		1503	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1504	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1505
		1506	hv_sig = coro_get_hv ("SIG", TRUE);
		1507	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1508	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1509
		1510	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1511	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1512
1188	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1513	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1189		1514
1190	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1515	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1191	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1192	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1193	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1194	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1195	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1196	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1197		1519
1198	main_mainstack = PL_mainstack;	1520	main_mainstack = PL_mainstack;
1199	main_top_env = PL_top_env;	1521	main_top_env = PL_top_env;
1200		1522
1201	while (main_top_env->je_prev)	1523	while (main_top_env->je_prev)
…		…
1214	struct coro *coro;	1536	struct coro *coro;
1215	HV *hv;	1537	HV *hv;
1216	int i;	1538	int i;
1217		1539
1218	Newz (0, coro, 1, struct coro);	1540	Newz (0, coro, 1, struct coro);
1219	coro->args = newAV ();	1541	coro->args = newAV ();
1220	coro->save = CORO_SAVE_DEF;
1221	coro->flags = CF_NEW;	1542	coro->flags = CF_NEW;
1222		1543
1223	if (first) first->prev = coro;	1544	if (coro_first) coro_first->prev = coro;
1224	coro->next = first;	1545	coro->next = coro_first;
1225	first = coro;	1546	coro_first = coro;
1226		1547
1227	coro->hv = hv = newHV ();	1548	coro->hv = hv = newHV ();
1228	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1549	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1229	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1550	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1230		1551
		1552	av_extend (coro->args, items - 1);
1231	for (i = 1; i < items; i++)	1553	for (i = 1; i < items; i++)
1232	av_push (coro->args, newSVsv (ST (i)));	1554	av_push (coro->args, newSVsv (ST (i)));
1233	}	1555	}
1234	OUTPUT:	1556	OUTPUT:
1235	RETVAL	1557	RETVAL
1236		1558
1237	int	1559	# these not obviously related functions are all rolled into the same xs
1238	save (SV *coro, int new_save = -1)	1560	# function to increase chances that they all will call transfer with the same
1239	CODE:	1561	# stack offset
1240	RETVAL = api_save (coro, new_save);
1241	OUTPUT:
1242	RETVAL
1243
1244	int
1245	save_also (SV *coro_sv, int save_also)
1246	CODE:
1247	{
1248	struct coro *coro = SvSTATE (coro_sv);
1249	RETVAL = coro->save;
1250	coro->save |= save_also;
1251	}
1252	OUTPUT:
1253	RETVAL
1254
1255	void	1562	void
1256	_set_stacklevel (...)	1563	_set_stacklevel (...)
1257	ALIAS:	1564	ALIAS:
1258	Coro::State::transfer = 1	1565	Coro::State::transfer = 1
1259	Coro::schedule = 2	1566	Coro::schedule = 2
…		…
1293	}	1600	}
1294		1601
1295	BARRIER;	1602	BARRIER;
1296	TRANSFER (ta);	1603	TRANSFER (ta);
1297		1604
1298	if (GIMME_V != G_VOID && ta.next != ta.prev)	1605	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1299	XSRETURN_YES;	1606	XSRETURN_YES;
1300	}	1607	}
1301		1608
1302	bool	1609	bool
1303	_destroy (SV *coro_sv)	1610	_destroy (SV *coro_sv)
…		…
1339	void	1646	void
1340	list ()	1647	list ()
1341	PPCODE:	1648	PPCODE:
1342	{	1649	{
1343	struct coro *coro;	1650	struct coro *coro;
1344	for (coro = first; coro; coro = coro->next)	1651	for (coro = coro_first; coro; coro = coro->next)
1345	if (coro->hv)	1652	if (coro->hv)
1346	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1653	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1347	}	1654	}
1348		1655
1349	void	1656	void
1350	_eval (SV *coro_sv, SV *coderef)	1657	call (Coro::State coro, SV *coderef)
		1658	ALIAS:
		1659	eval = 1
1351	CODE:	1660	CODE:
1352	{	1661	{
1353	struct coro *coro = SvSTATE (coro_sv);
1354	if (coro->mainstack)	1662	if (coro->mainstack)
1355	{	1663	{
1356	struct coro temp;	1664	struct coro temp;
1357	Zero (&temp, 1, struct coro);
1358	temp.save = CORO_SAVE_ALL;
1359		1665
1360	if (!(coro->flags & CF_RUNNING))	1666	if (!(coro->flags & CF_RUNNING))
1361	{	1667	{
1362	save_perl (aTHX_ &temp);	1668	save_perl (aTHX_ &temp);
1363	load_perl (aTHX_ coro);	1669	load_perl (aTHX_ coro);
…		…
1367	dSP;	1673	dSP;
1368	ENTER;	1674	ENTER;
1369	SAVETMPS;	1675	SAVETMPS;
1370	PUSHMARK (SP);	1676	PUSHMARK (SP);
1371	PUTBACK;	1677	PUTBACK;
		1678
		1679	if (ix)
		1680	eval_sv (coderef, 0);
		1681	else
1372	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1682	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1683
1373	SPAGAIN;	1684	SPAGAIN;
1374	FREETMPS;	1685	FREETMPS;
1375	LEAVE;	1686	LEAVE;
1376	PUTBACK;	1687	PUTBACK;
1377	}	1688	}
…		…
1381	save_perl (aTHX_ coro);	1692	save_perl (aTHX_ coro);
1382	load_perl (aTHX_ &temp);	1693	load_perl (aTHX_ &temp);
1383	}	1694	}
1384	}	1695	}
1385	}	1696	}
1386		1697
1387	SV *	1698	SV *
1388	is_ready (SV *coro_sv)	1699	is_ready (Coro::State coro)
1389	PROTOTYPE: $	1700	PROTOTYPE: $
1390	ALIAS:	1701	ALIAS:
1391	is_ready = CF_READY	1702	is_ready = CF_READY
1392	is_running = CF_RUNNING	1703	is_running = CF_RUNNING
1393	is_new = CF_NEW	1704	is_new = CF_NEW
1394	is_destroyed = CF_DESTROYED	1705	is_destroyed = CF_DESTROYED
1395	CODE:	1706	CODE:
1396	struct coro *coro = SvSTATE (coro_sv);
1397	RETVAL = boolSV (coro->flags & ix);	1707	RETVAL = boolSV (coro->flags & ix);
1398	OUTPUT:	1708	OUTPUT:
1399	RETVAL	1709	RETVAL
1400		1710
		1711	void
		1712	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1713
		1714	SV *
		1715	has_stack (Coro::State coro)
		1716	PROTOTYPE: $
		1717	CODE:
		1718	RETVAL = boolSV (!!coro->cctx);
		1719	OUTPUT:
		1720	RETVAL
		1721
		1722	int
		1723	is_traced (Coro::State coro)
		1724	PROTOTYPE: $
		1725	CODE:
		1726	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	IV
		1731	rss (Coro::State coro)
		1732	PROTOTYPE: $
		1733	ALIAS:
		1734	usecount = 1
		1735	CODE:
		1736	switch (ix)
		1737	{
		1738	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1739	case 1: RETVAL = coro->usecount; break;
		1740	}
		1741	OUTPUT:
		1742	RETVAL
		1743
1401		1744
1402	MODULE = Coro::State PACKAGE = Coro	1745	MODULE = Coro::State PACKAGE = Coro
1403		1746
1404	BOOT:	1747	BOOT:
1405	{	1748	{
1406	int i;	1749	int i;
1407		1750
		1751	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1752	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1753	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1754
		1755	coro_current = coro_get_sv ("Coro::current", FALSE);
		1756	SvREADONLY_on (coro_current);
		1757
1408	coro_stash = gv_stashpv ("Coro", TRUE);	1758	coro_stash = gv_stashpv ("Coro", TRUE);
1409		1759
1410	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1760	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1411	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1761	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1412	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1762	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1413	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1763	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1414	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1764	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1415	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1765	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1416		1766
1417	coro_current = get_sv ("Coro::current", FALSE);
1418	SvREADONLY_on (coro_current);
1419
1420	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1767	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1421	coro_ready[i] = newAV ();	1768	coro_ready[i] = newAV ();
1422		1769
1423	{	1770	{
1424	SV *sv = perl_get_sv("Coro::API", 1);	1771	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1772	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1425		1773
1426	coroapi.schedule = api_schedule;	1774	coroapi.schedule = api_schedule;
1427	coroapi.save = api_save;
1428	coroapi.cede = api_cede;	1775	coroapi.cede = api_cede;
1429	coroapi.cede_notself = api_cede_notself;	1776	coroapi.cede_notself = api_cede_notself;
1430	coroapi.ready = api_ready;	1777	coroapi.ready = api_ready;
1431	coroapi.is_ready = api_is_ready;	1778	coroapi.is_ready = api_is_ready;
1432	coroapi.nready = &coro_nready;	1779	coroapi.nready = &coro_nready;
…		…
1481	CODE:	1828	CODE:
1482	RETVAL = coro_nready;	1829	RETVAL = coro_nready;
1483	OUTPUT:	1830	OUTPUT:
1484	RETVAL	1831	RETVAL
1485		1832
		1833	void
		1834	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1835	PROTOTYPE: $;$
		1836	CODE:
		1837	SvREFCNT_dec (self->throw);
		1838	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1839
		1840	# for async_pool speedup
		1841	void
		1842	_pool_1 (SV *cb)
		1843	CODE:
		1844	{
		1845	struct coro *coro = SvSTATE (coro_current);
		1846	HV *hv = (HV *)SvRV (coro_current);
		1847	AV *defav = GvAV (PL_defgv);
		1848	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1849	AV *invoke_av;
		1850	int i, len;
		1851
		1852	if (!invoke)
		1853	croak ("\3async_pool terminate\2\n");
		1854
		1855	SvREFCNT_dec (coro->saved_deffh);
		1856	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1857
		1858	hv_store (hv, "desc", sizeof ("desc") - 1,
		1859	newSVpvn (strpair ("[async_pool]")), 0);
		1860
		1861	invoke_av = (AV *)SvRV (invoke);
		1862	len = av_len (invoke_av);
		1863
		1864	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1865
		1866	if (len > 0)
		1867	{
		1868	av_fill (defav, len - 1);
		1869	for (i = 0; i < len; ++i)
		1870	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1871	}
		1872
		1873	SvREFCNT_dec (invoke);
		1874	}
		1875
		1876	void
		1877	_pool_2 (SV *cb)
		1878	CODE:
		1879	{
		1880	struct coro *coro = SvSTATE (coro_current);
		1881
		1882	sv_setsv (cb, &PL_sv_undef);
		1883
		1884	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1885	coro->saved_deffh = 0;
		1886
		1887	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1888	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1889	croak ("\3async_pool terminate\2\n");
		1890
		1891	av_clear (GvAV (PL_defgv));
		1892	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1893	newSVpvn (strpair ("[async_pool idle]")), 0);
		1894
		1895	coro->prio = 0;
		1896
		1897	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1898	api_trace (coro_current, 0);
		1899
		1900	av_push (av_async_pool, newSVsv (coro_current));
		1901	}
		1902
		1903
1486	MODULE = Coro::State PACKAGE = Coro::AIO	1904	MODULE = Coro::State PACKAGE = Coro::AIO
1487		1905
1488	SV *	1906	SV *
1489	_get_state ()	1907	_get_state ()
1490	CODE:	1908	CODE:

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