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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC vs.
Revision 1.201 by root, Mon Oct 8 01:23:14 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
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		108
100	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	113	#else
104	# define attribute(x)	114	# define attribute(x)
105	# define BARRIER	115	# define BARRIER
		116	# define expect(expr,value) (expr)
106	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
107		121
108	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
109		123
110	#include "CoroAPI.h"	124	#include "CoroAPI.h"
111		125
…		…
116	#else	130	#else
117	# define LOCK (void)0	131	# define LOCK (void)0
118	# define UNLOCK (void)0	132	# define UNLOCK (void)0
119	#endif	133	#endif
120		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
121	/* helper storage struct for Coro::AIO */	137	/* helper storage struct for Coro::AIO */
122	struct io_state	138	struct io_state
123	{	139	{
124	int errorno;	140	int errorno;
125	I32 laststype;	141	I32 laststype;
…		…
132	static AV *main_mainstack; /* used to differentiate between $main and others */	148	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	149	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	150	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	151	static SV *coro_mortal; /* will be freed after next transfer */
136		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
137	/* async_pool helper stuff */	160	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	161	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	162	static SV *sv_pool_size;
140	static AV *av_async_pool;	163	static AV *av_async_pool;
141		164
142	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
144		167
145	enum {	168	enum {
146	CC_MAPPED = 0x01,	169	CC_MAPPED = 0x01,
147	CC_TRACE = 0x02,
148	CC_NOREUSE = 0x04, /* throw this away after tracing */	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,
149	};	175	};
150		176
151	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
152	typedef struct coro_cctx {	178	typedef struct coro_cctx {
153	struct coro_cctx *next;	179	struct coro_cctx *next;
…		…
173	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
174	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
175	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
176	};	202	};
177		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
178	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
179	struct coro {	218	struct coro {
180	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
181	coro_cctx *cctx;	220	coro_cctx *cctx;
182		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots *slot; /* basically the saved sp */
		225
183	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
184	AV *args;	227	AV *args;
185	int refcnt;	228	int refcnt;
186	int save; /* CORO_SAVE flags */
187	int flags; /* CF_ flags */	229	int flags; /* CF_ flags */
188		230
189	/* optionally saved, might be zero */	231	/* statistics */
190	AV *defav; /* @_ */	232	int usecount; /* number of transfers to this coro */
191	SV *defsv; /* $_ */
192	SV *errsv; /* $@ */
193	GV *deffh; /* default filehandle */
194	SV *irssv; /* $/ */
195	SV *irssv_sv; /* real $/ cache */
196
197	#define VAR(name,type) type name;
198	# include "state.h"
199	#undef VAR
200		233
201	/* coro process data */	234	/* coro process data */
202	int prio;	235	int prio;
		236	SV *throw;
		237
		238	/* async_pool */
		239	SV *saved_deffh;
203		240
204	/* linked list */	241	/* linked list */
205	struct coro *next, *prev;	242	struct coro *next, *prev;
206	HV *hv; /* the perl hash associated with this coro, if any */	243	HV *hv; /* the perl hash associated with this coro, if any */
207	};	244	};
…		…
223	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
224	static int coro_nready;	261	static int coro_nready;
225	static struct coro *coro_first;	262	static struct coro *coro_first;
226		263
227	/** 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	}
228		295
229	static AV *	296	static AV *
230	coro_clone_padlist (pTHX_ CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
231	{	298	{
232	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
…		…
296	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
297	? SvMAGIC (cv) \	364	? SvMAGIC (cv) \
298	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
299	: 0	366	: 0
300		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
301	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
302	static void	395	static void
303	get_padlist (pTHX_ CV *cv)	396	get_padlist (pTHX_ CV *cv)
304	{	397	{
305	MAGIC *mg = CORO_MAGIC (cv);	398	MAGIC *mg = CORO_MAGIC (cv);
306	AV *av;	399	AV *av;
307		400
308	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
309	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
310	else	403	else
311	{	404	{
312	#if CORO_PREFER_PERL_FUNCTIONS	405	#if CORO_PREFER_PERL_FUNCTIONS
313	/* this is probably cleaner, but also slower? */	406	/* this is probably cleaner, but also slower? */
…		…
325	put_padlist (pTHX_ CV *cv)	418	put_padlist (pTHX_ CV *cv)
326	{	419	{
327	MAGIC *mg = CORO_MAGIC (cv);	420	MAGIC *mg = CORO_MAGIC (cv);
328	AV *av;	421	AV *av;
329		422
330	if (!mg)	423	if (expect_false (!mg))
331	{	424	{
332	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
333	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
334	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
335	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
336	}	429	}
337		430
338	av = (AV *)mg->mg_obj;	431	av = (AV *)mg->mg_obj;
339		432
340	if (AvFILLp (av) >= AvMAX (av))	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
341	av_extend (av, AvMAX (av) + 1);	434	av_extend (av, AvMAX (av) + 1);
342		435
343	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
344	}	437	}
345		438
346	/** load & save, init *******************************************************/	439	/** load & save, init *******************************************************/
347		440
348	#define SB do {
349	#define SE } while (0)
350
351	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
352
353	static void	441	static void
354	load_perl (pTHX_ Coro__State c)	442	load_perl (pTHX_ Coro__State c)
355	{	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
356	#define VAR(name,type) PL_ ## name = c->name;	454	#define VAR(name,type) PL_ ## name = slot->name;
357	# include "state.h"	455	# include "state.h"
358	#undef VAR	456	#undef VAR
359
360	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
364
365	if (c->irssv)
366	{
367	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
368	{
369	SvREFCNT_dec (c->irssv);
370	c->irssv = 0;
371	}
372	else
373	{
374	REPLACE_SV (PL_rs, c->irssv);
375	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
376	sv_setsv (c->irssv_sv, PL_rs);
377	}
378	}
379		457
380	{	458	{
381	dSP;	459	dSP;
		460
382	CV *cv;	461	CV *cv;
383		462
384	/* now do the ugly restore mess */	463	/* now do the ugly restore mess */
385	while ((cv = (CV *)POPs))	464	while (expect_true (cv = (CV *)POPs))
386	{	465	{
387	put_padlist (aTHX_ cv); /* mark this padlist as available */	466	put_padlist (aTHX_ cv); /* mark this padlist as available */
388	CvDEPTH (cv) = PTR2IV (POPs);	467	CvDEPTH (cv) = PTR2IV (POPs);
389	CvPADLIST (cv) = (AV *)POPs;	468	CvPADLIST (cv) = (AV *)POPs;
390	}	469	}
…		…
409		488
410	XPUSHs (Nullsv);	489	XPUSHs (Nullsv);
411	/* this loop was inspired by pp_caller */	490	/* this loop was inspired by pp_caller */
412	for (;;)	491	for (;;)
413	{	492	{
414	while (cxix >= 0)	493	while (expect_true (cxix >= 0))
415	{	494	{
416	PERL_CONTEXT *cx = &ccstk[cxix--];	495	PERL_CONTEXT *cx = &ccstk[cxix--];
417		496
418	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	497	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
419	{	498	{
420	CV *cv = cx->blk_sub.cv;	499	CV *cv = cx->blk_sub.cv;
421		500
422	if (CvDEPTH (cv))	501	if (expect_true (CvDEPTH (cv)))
423	{	502	{
424	EXTEND (SP, 3);	503	EXTEND (SP, 3);
425	PUSHs ((SV *)CvPADLIST (cv));	504	PUSHs ((SV *)CvPADLIST (cv));
426	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	505	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
427	PUSHs ((SV *)cv);	506	PUSHs ((SV *)cv);
…		…
430	get_padlist (aTHX_ cv);	509	get_padlist (aTHX_ cv);
431	}	510	}
432	}	511	}
433	}	512	}
434		513
435	if (top_si->si_type == PERLSI_MAIN)	514	if (expect_true (top_si->si_type == PERLSI_MAIN))
436	break;	515	break;
437		516
438	top_si = top_si->si_prev;	517	top_si = top_si->si_prev;
439	ccstk = top_si->si_cxstack;	518	ccstk = top_si->si_cxstack;
440	cxix = top_si->si_cxix;	519	cxix = top_si->si_cxix;
441	}	520	}
442		521
443	PUTBACK;	522	PUTBACK;
444	}	523	}
445		524
446	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 */
447	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	526	{
448	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
449	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	528	int i;
450	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;
451		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
452	#define VAR(name,type)c->name = PL_ ## name;	548	#define VAR(name,type) slot->name = PL_ ## name;
453	# include "state.h"	549	# include "state.h"
454	#undef VAR	550	#undef VAR
		551	}
455	}	552	}
456		553
457	/*	554	/*
458	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
459	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
…		…
464	# define coro_init_stacks init_stacks	561	# define coro_init_stacks init_stacks
465	#else	562	#else
466	static void	563	static void
467	coro_init_stacks (pTHX)	564	coro_init_stacks (pTHX)
468	{	565	{
469	PL_curstackinfo = new_stackinfo(64, 6);	566	PL_curstackinfo = new_stackinfo(32, 8);
470	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		570
474	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		574
478	New(50,PL_tmps_stack,64,SV*);	575	New(50,PL_tmps_stack,32,SV*);
479	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
481	PL_tmps_max = 64;	578	PL_tmps_max = 32;
482		579
483	New(54,PL_markstack,16,I32);	580	New(54,PL_markstack,16,I32);
484	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	582	PL_markstack_max = PL_markstack + 16;
486		583
487	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
489	#endif	586	#endif
490		587
491	New(54,PL_scopestack,16,I32);	588	New(54,PL_scopestack,8,I32);
492	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	590	PL_scopestack_max = 8;
494		591
495	New(54,PL_savestack,64,ANY);	592	New(54,PL_savestack,24,ANY);
496	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
497	PL_savestack_max = 64;	594	PL_savestack_max = 24;
498		595
499	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,4,OP*);	597	New(54,PL_retstack,4,OP*);
501	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
502	PL_retstack_max = 4;	599	PL_retstack_max = 4;
…		…
508	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
509	*/	606	*/
510	static void	607	static void
511	coro_destroy_stacks (pTHX)	608	coro_destroy_stacks (pTHX)
512	{	609	{
513	if (!IN_DESTRUCT)
514	{
515	/* restore all saved variables and stuff */
516	LEAVE_SCOPE (0);
517	assert (PL_tmps_floor == -1);
518
519	/* free all temporaries */
520	FREETMPS;
521	assert (PL_tmps_ix == -1);
522
523	/* unwind all extra stacks */
524	POPSTACK_TO (PL_mainstack);
525
526	/* unwind main stack */
527	dounwind (-1);
528	}
529
530	while (PL_curstackinfo->si_next)	610	while (PL_curstackinfo->si_next)
531	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
532		612
533	while (PL_curstackinfo)	613	while (PL_curstackinfo)
534	{	614	{
…		…
550	Safefree (PL_retstack);	630	Safefree (PL_retstack);
551	#endif	631	#endif
552	}	632	}
553		633
554	static size_t	634	static size_t
555	coro_rss (struct coro *coro)	635	coro_rss (pTHX_ struct coro *coro)
556	{	636	{
557	size_t rss = sizeof (coro);	637	size_t rss = sizeof (*coro);
558		638
559	if (coro->mainstack)	639	if (coro->mainstack)
560	{	640	{
		641	perl_slots tmp_slot;
		642	perl_slots *slot;
		643
561	if (coro->flags & CF_RUNNING)	644	if (coro->flags & CF_RUNNING)
562	{	645	{
		646	slot = &tmp_slot;
		647
563	#define VAR(name,type)coro->name = PL_ ## name;	648	#define VAR(name,type) slot->name = PL_ ## name;
564	# include "state.h"	649	# include "state.h"
565	#undef VAR	650	#undef VAR
566	}	651	}
		652	else
		653	slot = coro->slot;
567		654
568	rss += sizeof (coro->curstackinfo);	655	rss += sizeof (slot->curstackinfo);
569	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
571	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
572	rss += coro->tmps_max * sizeof (SV *);	658	rss += slot->tmps_max * sizeof (SV *);
573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
574	rss += coro->scopestack_max * sizeof (I32);	660	rss += slot->scopestack_max * sizeof (I32);
575	rss += coro->savestack_max * sizeof (ANY);	661	rss += slot->savestack_max * sizeof (ANY);
576		662
577	#if !PERL_VERSION_ATLEAST (5,9,0)	663	#if !PERL_VERSION_ATLEAST (5,9,0)
578	rss += coro->retstack_max * sizeof (OP *);	664	rss += slot->retstack_max * sizeof (OP *);
579	#endif	665	#endif
580	}	666	}
581		667
582	return rss;	668	return rss;
583	}	669	}
584		670
585	/** coroutine stack handling ************************************************/	671	/** coroutine stack handling ************************************************/
586		672
587	static void	673	static void
588	setup_coro (pTHX_ struct coro *coro)	674	coro_setup (pTHX_ struct coro *coro)
589	{	675	{
590	/*	676	/*
591	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
592	*/	678	*/
593	coro_init_stacks (aTHX);	679	coro_init_stacks (aTHX);
594		680
		681	PL_runops = RUNOPS_DEFAULT;
595	PL_curcop = &PL_compiling;	682	PL_curcop = &PL_compiling;
596	PL_in_eval = EVAL_NULL;	683	PL_in_eval = EVAL_NULL;
597	PL_comppad = 0;	684	PL_comppad = 0;
598	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
599	PL_localizing = 0;	687	PL_localizing = 0;
600	PL_dirty = 0;	688	PL_dirty = 0;
601	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);
602		699
603	{	700	{
604	dSP;	701	dSP;
605	LOGOP myop;	702	LOGOP myop;
606		703
607	SvREFCNT_dec (GvAV (PL_defgv));
608	GvAV (PL_defgv) = coro->args; coro->args = 0;
609
610	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
611	myop.op_next = Nullop;	705	myop.op_next = Nullop;
612	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
613		707
614	PUSHMARK (SP);	708	PUSHMARK (SP);
615	XPUSHs (av_shift (GvAV (PL_defgv)));	709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
616	PUTBACK;	710	PUTBACK;
617	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
618	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
619	SPAGAIN;	713	SPAGAIN;
620	}	714	}
621		715
622	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);
623	}	753	}
624		754
625	static void	755	static void
626	free_coro_mortal (pTHX)	756	free_coro_mortal (pTHX)
627	{	757	{
628	if (coro_mortal)	758	if (expect_true (coro_mortal))
629	{	759	{
630	SvREFCNT_dec (coro_mortal);	760	SvREFCNT_dec (coro_mortal);
631	coro_mortal = 0;	761	coro_mortal = 0;
632	}	762	}
633	}	763	}
634		764
635	static void
636	do_trace (pTHX)
637	{
638	if (PL_curcop != &PL_compiling)
639	{
640	runops_proc_t old_runops = PL_runops;
641	dSP;
642	ENTER;
643	SAVETMPS;
644	PUSHMARK (SP);
645	PUTBACK;
646	PL_runops = RUNOPS_DEFAULT;
647	call_pv ("Coro::_do_trace", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD | G_NOARGS);
648	PL_runops = old_runops;
649	SPAGAIN;
650	FREETMPS;
651	LEAVE;
652	PUTBACK;
653	}
654	}
655
656	static int	765	static int
657	runops_coro (pTHX)	766	runops_trace (pTHX)
658	{	767	{
659	COP *oldcop = 0;	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;
660		772
661	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	773	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
662	{	774	{
663	PERL_ASYNC_CHECK ();	775	PERL_ASYNC_CHECK ();
664		776
665	if (oldcop != PL_curcop)	777	if (cctx->flags & CC_TRACE_ALL)
666	{	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	{
667	oldcop = PL_curcop;	820	oldcop = PL_curcop;
668	do_trace (aTHX);	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	}
669	}	882	}
670	}	883	}
671		884
672	TAINT_NOT;	885	TAINT_NOT;
673	return 0;	886	return 0;
…		…
675		888
676	/* 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 */
677	/* _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 */
678	/* during execution of a perl program */	891	/* during execution of a perl program */
679	static void NOINLINE	892	static void NOINLINE
680	prepare_cctx (pTHX_ coro_cctx *cctx)	893	cctx_prepare (pTHX_ coro_cctx *cctx)
681	{	894	{
682	dSP;	895	dSP;
683	LOGOP myop;	896	LOGOP myop;
684		897
685	PL_top_env = &PL_start_env;	898	PL_top_env = &PL_start_env;
686		899
687	if (cctx->flags & CC_TRACE)	900	if (cctx->flags & CC_TRACE)
688	PL_runops = runops_coro;	901	PL_runops = runops_trace;
689		902
690	Zero (&myop, 1, LOGOP);	903	Zero (&myop, 1, LOGOP);
691	myop.op_next = PL_op;	904	myop.op_next = PL_op;
692	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	905	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
693		906
…		…
703		916
704	/*	917	/*
705	* this is a _very_ stripped down perl interpreter ;)	918	* this is a _very_ stripped down perl interpreter ;)
706	*/	919	*/
707	static void	920	static void
708	coro_run (void *arg)	921	cctx_run (void *arg)
709	{	922	{
710	dTHX;	923	dTHX;
711		924
712	/* coro_run is the alternative tail of transfer(), so unlock here. */	925	/* cctx_run is the alternative tail of transfer(), so unlock here. */
713	UNLOCK;	926	UNLOCK;
714		927
715	/* we now skip the entersub that lead to transfer() */	928	/* we now skip the entersub that lead to transfer() */
716	PL_op = PL_op->op_next;	929	PL_op = PL_op->op_next;
717		930
718	/* inject a fake subroutine call to cctx_init */	931	/* inject a fake subroutine call to cctx_init */
719	prepare_cctx (aTHX_ (coro_cctx *)arg);	932	cctx_prepare (aTHX_ (coro_cctx *)arg);
720		933
721	/* 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 */
722	PL_restartop = PL_op;	935	PL_restartop = PL_op;
723	perl_run (PL_curinterp);	936	perl_run (PL_curinterp);
724		937
…		…
743	++cctx_count;	956	++cctx_count;
744		957
745	Newz (0, cctx, 1, coro_cctx);	958	Newz (0, cctx, 1, coro_cctx);
746		959
747	#if HAVE_MMAP	960	#if HAVE_MMAP
748
749	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	961	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
750	/* mmap supposedly does allocate-on-write for us */	962	/* mmap supposedly does allocate-on-write for us */
751	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	963	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
752		964
753	if (cctx->sptr != (void *)-1)	965	if (cctx->sptr != (void *)-1)
…		…
774	stack_start = cctx->sptr;	986	stack_start = cctx->sptr;
775	stack_size = cctx->ssize;	987	stack_size = cctx->ssize;
776	}	988	}
777		989
778	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	990	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
779	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	991	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
780		992
781	return cctx;	993	return cctx;
782	}	994	}
783		995
784	static void	996	static void
…		…
801	Safefree (cctx->sptr);	1013	Safefree (cctx->sptr);
802		1014
803	Safefree (cctx);	1015	Safefree (cctx);
804	}	1016	}
805		1017
		1018	/* wether this cctx should be destructed */
		1019	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1020
806	static coro_cctx *	1021	static coro_cctx *
807	cctx_get (pTHX)	1022	cctx_get (pTHX)
808	{	1023	{
809	while (cctx_first)	1024	while (expect_true (cctx_first))
810	{	1025	{
811	coro_cctx *cctx = cctx_first;	1026	coro_cctx *cctx = cctx_first;
812	cctx_first = cctx->next;	1027	cctx_first = cctx->next;
813	--cctx_idle;	1028	--cctx_idle;
814		1029
815	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1030	if (expect_true (!CCTX_EXPIRED (cctx)))
816	return cctx;	1031	return cctx;
817		1032
818	cctx_destroy (cctx);	1033	cctx_destroy (cctx);
819	}	1034	}
820		1035
…		…
823		1038
824	static void	1039	static void
825	cctx_put (coro_cctx *cctx)	1040	cctx_put (coro_cctx *cctx)
826	{	1041	{
827	/* free another cctx if overlimit */	1042	/* free another cctx if overlimit */
828	if (cctx_idle >= MAX_IDLE_CCTX)	1043	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
829	{	1044	{
830	coro_cctx *first = cctx_first;	1045	coro_cctx *first = cctx_first;
831	cctx_first = first->next;	1046	cctx_first = first->next;
832	--cctx_idle;	1047	--cctx_idle;
833		1048
…		…
839	cctx_first = cctx;	1054	cctx_first = cctx;
840	}	1055	}
841		1056
842	/** coroutine switching *****************************************************/	1057	/** coroutine switching *****************************************************/
843		1058
844	/* never call directly, always through the coro_state_transfer global variable */	1059	static void
		1060	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1061	{
		1062	if (expect_true (prev != next))
		1063	{
		1064	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1065	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1066
		1067	if (expect_false (next->flags & CF_RUNNING))
		1068	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1069
		1070	if (expect_false (next->flags & CF_DESTROYED))
		1071	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1072
		1073	if (
		1074	#if PERL_VERSION_ATLEAST (5,9,0)
		1075	expect_false (PL_parser)
		1076	#else
		1077	expect_false (PL_lex_state != LEX_NOTPARSING)
		1078	#endif
		1079	)
		1080	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1081	}
		1082	}
		1083
		1084	/* always use the TRANSFER macro */
845	static void NOINLINE	1085	static void NOINLINE
846	transfer (pTHX_ struct coro *prev, struct coro *next)	1086	transfer (pTHX_ struct coro *prev, struct coro *next)
847	{	1087	{
848	dSTACKLEVEL;	1088	dSTACKLEVEL;
849		1089
850	/* sometimes transfer is only called to set idle_sp */	1090	/* sometimes transfer is only called to set idle_sp */
851	if (!next)	1091	if (expect_false (!next))
852	{	1092	{
853	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1093	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
854	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1094	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
855	}	1095	}
856	else if (prev != next)	1096	else if (expect_true (prev != next))
857	{	1097	{
858	coro_cctx *prev__cctx;	1098	coro_cctx *prev__cctx;
859		1099
860	if (prev->flags & CF_NEW)	1100	if (expect_false (prev->flags & CF_NEW))
861	{	1101	{
862	/* create a new empty context */	1102	/* create a new empty context */
863	Newz (0, prev->cctx, 1, coro_cctx);	1103	Newz (0, prev->cctx, 1, coro_cctx);
864	prev->flags &= ~CF_NEW;	1104	prev->flags &= ~CF_NEW;
865	prev->flags |= CF_RUNNING;	1105	prev->flags |= CF_RUNNING;
866	}	1106	}
867		1107
868	/*TODO: must not croak here */
869	if (!prev->flags & CF_RUNNING)
870	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
871
872	if (next->flags & CF_RUNNING)
873	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
874
875	if (next->flags & CF_DESTROYED)
876	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
877
878	prev->flags &= ~CF_RUNNING;	1108	prev->flags &= ~CF_RUNNING;
879	next->flags |= CF_RUNNING;	1109	next->flags |= CF_RUNNING;
880		1110
881	LOCK;	1111	LOCK;
882		1112
883	if (next->flags & CF_NEW)	1113	if (expect_false (next->flags & CF_NEW))
884	{	1114	{
885	/* need to start coroutine */	1115	/* need to start coroutine */
886	next->flags &= ~CF_NEW;	1116	next->flags &= ~CF_NEW;
887	/* first get rid of the old state */	1117	/* first get rid of the old state */
888	save_perl (aTHX_ prev);	1118	save_perl (aTHX_ prev);
889	/* setup coroutine call */	1119	/* setup coroutine call */
890	setup_coro (aTHX_ next);	1120	coro_setup (aTHX_ next);
891	}	1121	}
892	else	1122	else
893	{	1123	{
894	/* coroutine already started */	1124	/* coroutine already started */
895	save_perl (aTHX_ prev);	1125	save_perl (aTHX_ prev);
…		…
897	}	1127	}
898		1128
899	prev__cctx = prev->cctx;	1129	prev__cctx = prev->cctx;
900		1130
901	/* possibly "free" the cctx */	1131	/* possibly "free" the cctx */
902	if (prev__cctx->idle_sp == STACKLEVEL)	1132	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
903	{	1133	{
904	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1134	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
905	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1135	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
906		1136
907	prev->cctx = 0;	1137	prev->cctx = 0;
908		1138
		1139	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1140	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1141	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1142	if (!next->cctx)
		1143	next->cctx = cctx_get (aTHX);
		1144
909	cctx_put (prev__cctx);	1145	cctx_put (prev__cctx);
910	}	1146	}
911		1147
		1148	++next->usecount;
		1149
912	if (!next->cctx)	1150	if (expect_true (!next->cctx))
913	next->cctx = cctx_get (aTHX);	1151	next->cctx = cctx_get (aTHX);
914		1152
915	if (prev__cctx != next->cctx)	1153	if (expect_false (prev__cctx != next->cctx))
916	{	1154	{
917	prev__cctx->top_env = PL_top_env;	1155	prev__cctx->top_env = PL_top_env;
918	PL_top_env = next->cctx->top_env;	1156	PL_top_env = next->cctx->top_env;
919	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1157	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
920	}	1158	}
921		1159
922	free_coro_mortal (aTHX);	1160	free_coro_mortal (aTHX);
923	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	}
924	}	1175	}
925	}	1176	}
926		1177
927	struct transfer_args	1178	struct transfer_args
928	{	1179	{
929	struct coro *prev, *next;	1180	struct coro *prev, *next;
930	};	1181	};
931		1182
932	#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)
933		1185
934	/** high level stuff ********************************************************/	1186	/** high level stuff ********************************************************/
935		1187
936	static int	1188	static int
937	coro_state_destroy (pTHX_ struct coro *coro)	1189	coro_state_destroy (pTHX_ struct coro *coro)
…		…
954		1206
955	if (coro->mainstack && coro->mainstack != main_mainstack)	1207	if (coro->mainstack && coro->mainstack != main_mainstack)
956	{	1208	{
957	struct coro temp;	1209	struct coro temp;
958		1210
959	assert (!(coro->flags & CF_RUNNING));
960
961	Zero (&temp, 1, struct coro);
962	temp.save = CORO_SAVE_ALL;
963
964	if (coro->flags & CF_RUNNING)	1211	if (coro->flags & CF_RUNNING)
965	croak ("FATAL: tried to destroy currently running coroutine");	1212	croak ("FATAL: tried to destroy currently running coroutine");
966		1213
967	save_perl (aTHX_ &temp);	1214	save_perl (aTHX_ &temp);
968	load_perl (aTHX_ coro);	1215	load_perl (aTHX_ coro);
969		1216
970	coro_destroy_stacks (aTHX);	1217	coro_destroy (aTHX_ coro);
971		1218
972	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1219	load_perl (aTHX_ &temp);
973		1220
974	coro->mainstack = 0;	1221	coro->slot = 0;
975	}	1222	}
976		1223
977	cctx_destroy (coro->cctx);	1224	cctx_destroy (coro->cctx);
978	SvREFCNT_dec (coro->args);	1225	SvREFCNT_dec (coro->args);
979		1226
…		…
1020	#else	1267	#else
1021	# define MGf_DUP 0	1268	# define MGf_DUP 0
1022	#endif	1269	#endif
1023	};	1270	};
1024		1271
1025	static struct coro *
1026	SvSTATE_ (pTHX_ SV *coro)
1027	{
1028	HV *stash;
1029	MAGIC *mg;
1030
1031	if (SvROK (coro))
1032	coro = SvRV (coro);
1033
1034	stash = SvSTASH (coro);
1035	if (stash != coro_stash && stash != coro_state_stash)
1036	{
1037	/* very slow, but rare, check */
1038	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1039	croak ("Coro::State object required");
1040	}
1041
1042	mg = CORO_MAGIC (coro);
1043	return (struct coro *)mg->mg_ptr;
1044	}
1045
1046	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1047
1048	static void	1272	static void
1049	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)
1050	{	1274	{
1051	ta->prev = SvSTATE (prev_sv);	1275	ta->prev = SvSTATE (prev_sv);
1052	ta->next = SvSTATE (next_sv);	1276	ta->next = SvSTATE (next_sv);
		1277	TRANSFER_CHECK (*ta);
1053	}	1278	}
1054		1279
1055	static void	1280	static void
1056	api_transfer (SV *prev_sv, SV *next_sv)	1281	api_transfer (SV *prev_sv, SV *next_sv)
1057	{	1282	{
1058	dTHX;	1283	dTHX;
1059	struct transfer_args ta;	1284	struct transfer_args ta;
1060		1285
1061	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1286	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1062	TRANSFER (ta);	1287	TRANSFER (ta);
1063	}
1064
1065	static int
1066	api_save (SV *coro_sv, int new_save)
1067	{
1068	dTHX;
1069	struct coro *coro = SvSTATE (coro_sv);
1070	int old_save = coro->save;
1071
1072	if (new_save >= 0)
1073	coro->save = new_save;
1074
1075	return old_save;
1076	}	1288	}
1077		1289
1078	/** Coro ********************************************************************/	1290	/** Coro ********************************************************************/
1079		1291
1080	static void	1292	static void
…		…
1139	{	1351	{
1140	LOCK;	1352	LOCK;
1141	next_sv = coro_deq (aTHX_ PRIO_MIN);	1353	next_sv = coro_deq (aTHX_ PRIO_MIN);
1142		1354
1143	/* nothing to schedule: call the idle handler */	1355	/* nothing to schedule: call the idle handler */
1144	if (!next_sv)	1356	if (expect_false (!next_sv))
1145	{	1357	{
1146	dSP;	1358	dSP;
1147	UNLOCK;	1359	UNLOCK;
1148		1360
1149	ENTER;	1361	ENTER;
…		…
1159	}	1371	}
1160		1372
1161	ta->next = SvSTATE (next_sv);	1373	ta->next = SvSTATE (next_sv);
1162		1374
1163	/* cannot transfer to destroyed coros, skip and look for next */	1375	/* cannot transfer to destroyed coros, skip and look for next */
1164	if (ta->next->flags & CF_DESTROYED)	1376	if (expect_false (ta->next->flags & CF_DESTROYED))
1165	{	1377	{
1166	UNLOCK;	1378	UNLOCK;
1167	SvREFCNT_dec (next_sv);	1379	SvREFCNT_dec (next_sv);
1168	/* coro_nready is already taken care of by destroy */	1380	/* coro_nready is already taken care of by destroy */
1169	continue;	1381	continue;
…		…
1174	break;	1386	break;
1175	}	1387	}
1176		1388
1177	/* free this only after the transfer */	1389	/* free this only after the transfer */
1178	prev_sv = SvRV (coro_current);	1390	prev_sv = SvRV (coro_current);
1179	SvRV_set (coro_current, next_sv);
1180	ta->prev = SvSTATE (prev_sv);	1391	ta->prev = SvSTATE (prev_sv);
1181		1392	TRANSFER_CHECK (*ta);
1182	assert (ta->next->flags & CF_READY);	1393	assert (ta->next->flags & CF_READY);
1183	ta->next->flags &= ~CF_READY;	1394	ta->next->flags &= ~CF_READY;
		1395	SvRV_set (coro_current, next_sv);
1184		1396
1185	LOCK;	1397	LOCK;
1186	free_coro_mortal (aTHX);	1398	free_coro_mortal (aTHX);
1187	coro_mortal = prev_sv;	1399	coro_mortal = prev_sv;
1188	UNLOCK;	1400	UNLOCK;
…		…
1225	dTHX;	1437	dTHX;
1226	struct transfer_args ta;	1438	struct transfer_args ta;
1227		1439
1228	prepare_cede (aTHX_ &ta);	1440	prepare_cede (aTHX_ &ta);
1229		1441
1230	if (ta.prev != ta.next)	1442	if (expect_true (ta.prev != ta.next))
1231	{	1443	{
1232	TRANSFER (ta);	1444	TRANSFER (ta);
1233	return 1;	1445	return 1;
1234	}	1446	}
1235	else	1447	else
…		…
1249	}	1461	}
1250	else	1462	else
1251	return 0;	1463	return 0;
1252	}	1464	}
1253		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
1254	MODULE = Coro::State PACKAGE = Coro::State	1492	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1255		1493
1256	PROTOTYPES: DISABLE	1494	PROTOTYPES: DISABLE
1257		1495
1258	BOOT:	1496	BOOT:
1259	{	1497	{
1260	#ifdef USE_ITHREADS	1498	#ifdef USE_ITHREADS
1261	MUTEX_INIT (&coro_mutex);	1499	MUTEX_INIT (&coro_mutex);
1262	#endif	1500	#endif
1263	BOOT_PAGESIZE;	1501	BOOT_PAGESIZE;
1264		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
1265	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1513	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1266		1514
1267	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1515	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1268	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1269	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1270	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1271	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1272	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1273	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1274		1519
1275	main_mainstack = PL_mainstack;	1520	main_mainstack = PL_mainstack;
1276	main_top_env = PL_top_env;	1521	main_top_env = PL_top_env;
1277		1522
1278	while (main_top_env->je_prev)	1523	while (main_top_env->je_prev)
…		…
1291	struct coro *coro;	1536	struct coro *coro;
1292	HV *hv;	1537	HV *hv;
1293	int i;	1538	int i;
1294		1539
1295	Newz (0, coro, 1, struct coro);	1540	Newz (0, coro, 1, struct coro);
1296	coro->args = newAV ();	1541	coro->args = newAV ();
1297	coro->save = CORO_SAVE_DEF;
1298	coro->flags = CF_NEW;	1542	coro->flags = CF_NEW;
1299		1543
1300	if (coro_first) coro_first->prev = coro;	1544	if (coro_first) coro_first->prev = coro;
1301	coro->next = coro_first;	1545	coro->next = coro_first;
1302	coro_first = coro;	1546	coro_first = coro;
1303		1547
1304	coro->hv = hv = newHV ();	1548	coro->hv = hv = newHV ();
1305	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;
1306	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1550	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1307		1551
		1552	av_extend (coro->args, items - 1);
1308	for (i = 1; i < items; i++)	1553	for (i = 1; i < items; i++)
1309	av_push (coro->args, newSVsv (ST (i)));	1554	av_push (coro->args, newSVsv (ST (i)));
1310	}	1555	}
1311	OUTPUT:	1556	OUTPUT:
1312	RETVAL	1557	RETVAL
1313		1558
1314	int	1559	# these not obviously related functions are all rolled into the same xs
1315	save (SV *coro, int new_save = -1)	1560	# function to increase chances that they all will call transfer with the same
1316	CODE:	1561	# stack offset
1317	RETVAL = api_save (coro, new_save);
1318	OUTPUT:
1319	RETVAL
1320
1321	int
1322	save_also (SV *coro_sv, int save_also)
1323	CODE:
1324	{
1325	struct coro *coro = SvSTATE (coro_sv);
1326	RETVAL = coro->save;
1327	coro->save |= save_also;
1328	}
1329	OUTPUT:
1330	RETVAL
1331
1332	void	1562	void
1333	_set_stacklevel (...)	1563	_set_stacklevel (...)
1334	ALIAS:	1564	ALIAS:
1335	Coro::State::transfer = 1	1565	Coro::State::transfer = 1
1336	Coro::schedule = 2	1566	Coro::schedule = 2
…		…
1370	}	1600	}
1371		1601
1372	BARRIER;	1602	BARRIER;
1373	TRANSFER (ta);	1603	TRANSFER (ta);
1374		1604
1375	if (GIMME_V != G_VOID && ta.next != ta.prev)	1605	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1376	XSRETURN_YES;	1606	XSRETURN_YES;
1377	}	1607	}
1378		1608
1379	bool	1609	bool
1380	_destroy (SV *coro_sv)	1610	_destroy (SV *coro_sv)
…		…
1430	CODE:	1660	CODE:
1431	{	1661	{
1432	if (coro->mainstack)	1662	if (coro->mainstack)
1433	{	1663	{
1434	struct coro temp;	1664	struct coro temp;
1435	Zero (&temp, 1, struct coro);
1436	temp.save = CORO_SAVE_ALL;
1437		1665
1438	if (!(coro->flags & CF_RUNNING))	1666	if (!(coro->flags & CF_RUNNING))
1439	{	1667	{
1440	save_perl (aTHX_ &temp);	1668	save_perl (aTHX_ &temp);
1441	load_perl (aTHX_ coro);	1669	load_perl (aTHX_ coro);
…		…
1445	dSP;	1673	dSP;
1446	ENTER;	1674	ENTER;
1447	SAVETMPS;	1675	SAVETMPS;
1448	PUSHMARK (SP);	1676	PUSHMARK (SP);
1449	PUTBACK;	1677	PUTBACK;
		1678
1450	if (ix)	1679	if (ix)
1451	eval_sv (coderef, 0);	1680	eval_sv (coderef, 0);
1452	else	1681	else
1453	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1682	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1683
1454	SPAGAIN;	1684	SPAGAIN;
1455	FREETMPS;	1685	FREETMPS;
1456	LEAVE;	1686	LEAVE;
1457	PUTBACK;	1687	PUTBACK;
1458	}	1688	}
…		…
1462	save_perl (aTHX_ coro);	1692	save_perl (aTHX_ coro);
1463	load_perl (aTHX_ &temp);	1693	load_perl (aTHX_ &temp);
1464	}	1694	}
1465	}	1695	}
1466	}	1696	}
1467		1697
1468	SV *	1698	SV *
1469	is_ready (Coro::State coro)	1699	is_ready (Coro::State coro)
1470	PROTOTYPE: $	1700	PROTOTYPE: $
1471	ALIAS:	1701	ALIAS:
1472	is_ready = CF_READY	1702	is_ready = CF_READY
…		…
1477	RETVAL = boolSV (coro->flags & ix);	1707	RETVAL = boolSV (coro->flags & ix);
1478	OUTPUT:	1708	OUTPUT:
1479	RETVAL	1709	RETVAL
1480		1710
1481	void	1711	void
1482	trace (Coro::State coro, int enable = 0)	1712	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1483	CODE:
1484	if (enable)
1485	{
1486	if (coro->flags & CF_RUNNING)
1487	croak ("cannot enable tracing on running coroutine");
1488
1489	if (coro->cctx)
1490	croak ("cannot enable tracing on coroutine with custom stack");
1491
1492	coro->cctx = cctx_new ();
1493	coro->cctx->flags |= CC_TRACE;
1494	}
1495	else
1496	if (coro->cctx && coro->cctx->flags & CC_TRACE)
1497	{
1498	coro->cctx->flags &= ~CC_TRACE;
1499	coro->cctx->flags |= CC_NOREUSE;
1500	}
1501		1713
1502	SV *	1714	SV *
1503	has_stack (Coro::State coro)	1715	has_stack (Coro::State coro)
1504	PROTOTYPE: $	1716	PROTOTYPE: $
1505	CODE:	1717	CODE:
1506	RETVAL = boolSV (!!coro->cctx);	1718	RETVAL = boolSV (!!coro->cctx);
1507	OUTPUT:	1719	OUTPUT:
1508	RETVAL	1720	RETVAL
1509		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
1510	IV	1730	IV
1511	rss (Coro::State coro)	1731	rss (Coro::State coro)
1512	PROTOTYPE: $	1732	PROTOTYPE: $
		1733	ALIAS:
		1734	usecount = 1
1513	CODE:	1735	CODE:
1514	RETVAL = coro_rss (coro);	1736	switch (ix)
		1737	{
		1738	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1739	case 1: RETVAL = coro->usecount; break;
		1740	}
1515	OUTPUT:	1741	OUTPUT:
1516	RETVAL	1742	RETVAL
1517		1743
1518		1744
1519	MODULE = Coro::State PACKAGE = Coro	1745	MODULE = Coro::State PACKAGE = Coro
1520		1746
1521	BOOT:	1747	BOOT:
1522	{	1748	{
1523	int i;	1749	int i;
1524		1750
1525	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);	1751	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1526	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);	1752	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1527	av_async_pool = get_av ("Coro::async_pool", TRUE);	1753	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1528		1754
1529	coro_current = get_sv ("Coro::current", FALSE);	1755	coro_current = coro_get_sv ("Coro::current", FALSE);
1530	SvREADONLY_on (coro_current);	1756	SvREADONLY_on (coro_current);
1531		1757
1532	coro_stash = gv_stashpv ("Coro", TRUE);	1758	coro_stash = gv_stashpv ("Coro", TRUE);
1533		1759
1534	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1760	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1535	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1761	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1536	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1762	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1537	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1763	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1540		1766
1541	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1767	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1542	coro_ready[i] = newAV ();	1768	coro_ready[i] = newAV ();
1543		1769
1544	{	1770	{
1545	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 */
1546		1773
1547	coroapi.schedule = api_schedule;	1774	coroapi.schedule = api_schedule;
1548	coroapi.save = api_save;
1549	coroapi.cede = api_cede;	1775	coroapi.cede = api_cede;
1550	coroapi.cede_notself = api_cede_notself;	1776	coroapi.cede_notself = api_cede_notself;
1551	coroapi.ready = api_ready;	1777	coroapi.ready = api_ready;
1552	coroapi.is_ready = api_is_ready;	1778	coroapi.is_ready = api_is_ready;
1553	coroapi.nready = &coro_nready;	1779	coroapi.nready = &coro_nready;
…		…
1602	CODE:	1828	CODE:
1603	RETVAL = coro_nready;	1829	RETVAL = coro_nready;
1604	OUTPUT:	1830	OUTPUT:
1605	RETVAL	1831	RETVAL
1606		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
1607	# for async_pool speedup	1840	# for async_pool speedup
1608	void	1841	void
1609	_pool_1 (SV *cb)	1842	_pool_1 (SV *cb)
1610	CODE:	1843	CODE:
1611	{	1844	{
1612	int i, len;	1845	struct coro *coro = SvSTATE (coro_current);
1613	HV *hv = (HV *)SvRV (coro_current);	1846	HV *hv = (HV *)SvRV (coro_current);
1614	AV *defav = GvAV (PL_defgv);	1847	AV *defav = GvAV (PL_defgv);
1615	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	1848	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1616	AV *invoke_av;	1849	AV *invoke_av;
		1850	int i, len;
1617		1851
1618	if (!invoke)	1852	if (!invoke)
1619	croak ("\3terminate\2\n");	1853	croak ("\3async_pool terminate\2\n");
		1854
		1855	SvREFCNT_dec (coro->saved_deffh);
		1856	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1620		1857
1621	hv_store (hv, "desc", sizeof ("desc") - 1,	1858	hv_store (hv, "desc", sizeof ("desc") - 1,
1622	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	1859	newSVpvn (strpair ("[async_pool]")), 0);
1623		1860
1624	invoke_av = (AV *)SvRV (invoke);	1861	invoke_av = (AV *)SvRV (invoke);
1625	len = av_len (invoke_av);	1862	len = av_len (invoke_av);
1626		1863
1627	sv_setsv (cb, AvARRAY (invoke_av)[0]);	1864	sv_setsv (cb, AvARRAY (invoke_av)[0]);
…		…
1642	{	1879	{
1643	struct coro *coro = SvSTATE (coro_current);	1880	struct coro *coro = SvSTATE (coro_current);
1644		1881
1645	sv_setsv (cb, &PL_sv_undef);	1882	sv_setsv (cb, &PL_sv_undef);
1646		1883
		1884	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1885	coro->saved_deffh = 0;
		1886
1647	if (coro_rss (coro) > SvIV (sv_pool_rss)	1887	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1648	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	1888	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1649	croak ("\3terminate\2\n");	1889	croak ("\3async_pool terminate\2\n");
1650		1890
1651	av_clear (GvAV (PL_defgv));	1891	av_clear (GvAV (PL_defgv));
1652	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	1892	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1653	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	1893	newSVpvn (strpair ("[async_pool idle]")), 0);
1654	coro->save = CORO_SAVE_DEF;	1894
1655	coro->prio = 0;	1895	coro->prio = 0;
		1896
		1897	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1898	api_trace (coro_current, 0);
		1899
1656	av_push (av_async_pool, newSVsv (coro_current));	1900	av_push (av_async_pool, newSVsv (coro_current));
1657	}	1901	}
1658		1902
1659		1903
1660	MODULE = Coro::State PACKAGE = Coro::AIO	1904	MODULE = Coro::State PACKAGE = Coro::AIO

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