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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC vs.
Revision 1.205 by root, Tue Oct 9 14:07:02 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	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	228	int flags; /* CF_ flags */
		229	HV *hv; /* the perl hash associated with this coro, if any */
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; /* exception to be thrown */
		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 */
197	};	243	};
198		244
199	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
201		247
…		…
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	260	static int coro_nready;
215	static struct coro *coro_first;	261	static struct coro *coro_first;
216		262
217	/** lowlevel stuff **********************************************************/	263	/** lowlevel stuff **********************************************************/
		264
		265	static SV *
		266	coro_get_sv (const char *name, int create)
		267	{
		268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		270	get_sv (name, create);
		271	#endif
		272	return get_sv (name, create);
		273	}
		274
		275	static AV *
		276	coro_get_av (const char *name, int create)
		277	{
		278	#if PERL_VERSION_ATLEAST (5,9,0)
		279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		280	get_av (name, create);
		281	#endif
		282	return get_av (name, create);
		283	}
		284
		285	static HV *
		286	coro_get_hv (const char *name, int create)
		287	{
		288	#if PERL_VERSION_ATLEAST (5,9,0)
		289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		290	get_hv (name, create);
		291	#endif
		292	return get_hv (name, create);
		293	}
218		294
219	static AV *	295	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
221	{	297	{
222	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
…		…
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
289	: 0	365	: 0
290		366
		367	static struct coro *
		368	SvSTATE_ (pTHX_ SV *coro)
		369	{
		370	HV *stash;
		371	MAGIC *mg;
		372
		373	if (SvROK (coro))
		374	coro = SvRV (coro);
		375
		376	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		377	croak ("Coro::State object required");
		378
		379	stash = SvSTASH (coro);
		380	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		381	{
		382	/* very slow, but rare, check */
		383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		384	croak ("Coro::State object required");
		385	}
		386
		387	mg = CORO_MAGIC (coro);
		388	return (struct coro *)mg->mg_ptr;
		389	}
		390
		391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		392
291	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
292	static void	394	static void
293	get_padlist (pTHX_ CV *cv)	395	get_padlist (pTHX_ CV *cv)
294	{	396	{
295	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
296	AV *av;	398	AV *av;
297		399
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	402	else
301	{	403	{
302	#if CORO_PREFER_PERL_FUNCTIONS	404	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
…		…
315	put_padlist (pTHX_ CV *cv)	417	put_padlist (pTHX_ CV *cv)
316	{	418	{
317	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
318	AV *av;	420	AV *av;
319		421
320	if (!mg)	422	if (expect_false (!mg))
321	{	423	{
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
326	}	428	}
327		429
328	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
329		431
330	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
332		434
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	436	}
335		437
336	/** load & save, init *******************************************************/	438	/** load & save, init *******************************************************/
337		439
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	440	static void
344	load_perl (pTHX_ Coro__State c)	441	load_perl (pTHX_ Coro__State c)
345	{	442	{
		443	perl_slots *slot = c->slot;
		444	c->slot = 0;
		445
		446	PL_mainstack = c->mainstack;
		447
		448	GvSV (PL_defgv) = slot->defsv;
		449	GvAV (PL_defgv) = slot->defav;
		450	GvSV (PL_errgv) = slot->errsv;
		451	GvSV (irsgv) = slot->irsgv;
		452
346	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	454	# include "state.h"
348	#undef VAR	455	#undef VAR
349		456
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
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		459
370	{	460	{
371	dSP;	461	dSP;
		462
372	CV *cv;	463	CV *cv;
373		464
374	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
376	{	467	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
380	}	471	}
…		…
399		490
400	XPUSHs (Nullsv);	491	XPUSHs (Nullsv);
401	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
402	for (;;)	493	for (;;)
403	{	494	{
404	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
405	{	496	{
406	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
407		498
408	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	499	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
409	{	500	{
410	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
411		502
412	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
413	{	504	{
414	EXTEND (SP, 3);	505	EXTEND (SP, 3);
415	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
416	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
417	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
420	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
421	}	512	}
422	}	513	}
423	}	514	}
424		515
425	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
426	break;	517	break;
427		518
428	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
429	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
430	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
431	}	522	}
432		523
433	PUTBACK;	524	PUTBACK;
434	}	525	}
435		526
436	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
437	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
438	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
439	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
440	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
441		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
442	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
443	# include "state.h"	550	# include "state.h"
444	#undef VAR	551	#undef VAR
		552	}
445	}	553	}
446		554
447	/*	555	/*
448	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
449	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
454	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
455	#else	563	#else
456	static void	564	static void
457	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
458	{	566	{
459	PL_curstackinfo = new_stackinfo(64, 6);	567	PL_curstackinfo = new_stackinfo(32, 8);
460	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
461	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
462	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
463		571
464	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
465	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
466	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
467		575
468	New(50,PL_tmps_stack,64,SV*);	576	New(50,PL_tmps_stack,32,SV*);
469	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
470	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
471	PL_tmps_max = 64;	579	PL_tmps_max = 32;
472		580
473	New(54,PL_markstack,16,I32);	581	New(54,PL_markstack,16,I32);
474	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
475	PL_markstack_max = PL_markstack + 16;	583	PL_markstack_max = PL_markstack + 16;
476		584
477	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
478	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
479	#endif	587	#endif
480		588
481	New(54,PL_scopestack,16,I32);	589	New(54,PL_scopestack,8,I32);
482	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
483	PL_scopestack_max = 16;	591	PL_scopestack_max = 8;
484		592
485	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
486	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
487	PL_savestack_max = 64;	595	PL_savestack_max = 24;
488		596
489	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
490	New(54,PL_retstack,4,OP*);	598	New(54,PL_retstack,4,OP*);
491	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
492	PL_retstack_max = 4;	600	PL_retstack_max = 4;
…		…
498	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
499	*/	607	*/
500	static void	608	static void
501	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
502	{	610	{
503	if (!IN_DESTRUCT)
504	{
505	/* restore all saved variables and stuff */
506	LEAVE_SCOPE (0);
507	assert (PL_tmps_floor == -1);
508
509	/* free all temporaries */
510	FREETMPS;
511	assert (PL_tmps_ix == -1);
512
513	/* unwind all extra stacks */
514	POPSTACK_TO (PL_mainstack);
515
516	/* unwind main stack */
517	dounwind (-1);
518	}
519
520	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
521	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
522		613
523	while (PL_curstackinfo)	614	while (PL_curstackinfo)
524	{	615	{
…		…
540	Safefree (PL_retstack);	631	Safefree (PL_retstack);
541	#endif	632	#endif
542	}	633	}
543		634
544	static size_t	635	static size_t
545	coro_rss (struct coro *coro)	636	coro_rss (pTHX_ struct coro *coro)
546	{	637	{
547	size_t rss = sizeof (coro);	638	size_t rss = sizeof (*coro);
548		639
549	if (coro->mainstack)	640	if (coro->mainstack)
550	{	641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
551	if (coro->flags & CF_RUNNING)	645	if (coro->flags & CF_RUNNING)
552	{	646	{
		647	slot = &tmp_slot;
		648
553	#define VAR(name,type)coro->name = PL_ ## name;	649	#define VAR(name,type) slot->name = PL_ ## name;
554	# include "state.h"	650	# include "state.h"
555	#undef VAR	651	#undef VAR
556	}	652	}
		653	else
		654	slot = coro->slot;
557		655
558	rss += sizeof (coro->curstackinfo);	656	rss += sizeof (slot->curstackinfo);
559	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
560	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
561	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
562	rss += coro->tmps_max * sizeof (SV *);	659	rss += slot->tmps_max * sizeof (SV *);
563	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
564	rss += coro->scopestack_max * sizeof (I32);	661	rss += slot->scopestack_max * sizeof (I32);
565	rss += coro->savestack_max * sizeof (ANY);	662	rss += slot->savestack_max * sizeof (ANY);
566		663
567	#if !PERL_VERSION_ATLEAST (5,9,0)	664	#if !PERL_VERSION_ATLEAST (5,9,0)
568	rss += coro->retstack_max * sizeof (OP *);	665	rss += slot->retstack_max * sizeof (OP *);
569	#endif	666	#endif
570	}	667	}
571		668
572	return rss;	669	return rss;
573	}	670	}
574		671
575	/** coroutine stack handling ************************************************/	672	/** coroutine stack handling ************************************************/
576		673
577	static void	674	static void
578	setup_coro (pTHX_ struct coro *coro)	675	coro_setup (pTHX_ struct coro *coro)
579	{	676	{
580	/*	677	/*
581	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
582	*/	679	*/
583	coro_init_stacks (aTHX);	680	coro_init_stacks (aTHX);
584		681
		682	PL_runops = RUNOPS_DEFAULT;
585	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
586	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
587	PL_comppad = 0;	685	PL_comppad = 0;
588	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
589	PL_localizing = 0;	688	PL_localizing = 0;
590	PL_dirty = 0;	689	PL_dirty = 0;
591	PL_restartop = 0;	690	PL_restartop = 0;
		691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		693
		694	GvSV (PL_defgv) = newSV (0);
		695	GvAV (PL_defgv) = coro->args; coro->args = 0;
		696	GvSV (PL_errgv) = newSV (0);
		697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		698	PL_rs = newSVsv (GvSV (irsgv));
		699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
592		700
593	{	701	{
594	dSP;	702	dSP;
595	LOGOP myop;	703	LOGOP myop;
596		704
597	SvREFCNT_dec (GvAV (PL_defgv));
598	GvAV (PL_defgv) = coro->args; coro->args = 0;
599
600	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
601	myop.op_next = Nullop;	706	myop.op_next = Nullop;
602	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
603		708
604	PUSHMARK (SP);	709	PUSHMARK (SP);
605	XPUSHs (av_shift (GvAV (PL_defgv)));	710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
606	PUTBACK;	711	PUTBACK;
607	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	714	SPAGAIN;
610	}	715	}
611		716
612	ENTER; /* necessary e.g. for dounwind */	717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		718	}
		719
		720	static void
		721	coro_destroy (pTHX_ struct coro *coro)
		722	{
		723	if (!IN_DESTRUCT)
		724	{
		725	/* restore all saved variables and stuff */
		726	LEAVE_SCOPE (0);
		727	assert (PL_tmps_floor == -1);
		728
		729	/* free all temporaries */
		730	FREETMPS;
		731	assert (PL_tmps_ix == -1);
		732
		733	/* unwind all extra stacks */
		734	POPSTACK_TO (PL_mainstack);
		735
		736	/* unwind main stack */
		737	dounwind (-1);
		738	}
		739
		740	SvREFCNT_dec (GvSV (PL_defgv));
		741	SvREFCNT_dec (GvAV (PL_defgv));
		742	SvREFCNT_dec (GvSV (PL_errgv));
		743	SvREFCNT_dec (PL_defoutgv);
		744	SvREFCNT_dec (PL_rs);
		745	SvREFCNT_dec (GvSV (irsgv));
		746
		747	SvREFCNT_dec (PL_diehook);
		748	SvREFCNT_dec (PL_warnhook);
		749
		750	SvREFCNT_dec (coro->saved_deffh);
		751	SvREFCNT_dec (coro->throw);
		752
		753	coro_destroy_stacks (aTHX);
613	}	754	}
614		755
615	static void	756	static void
616	free_coro_mortal (pTHX)	757	free_coro_mortal (pTHX)
617	{	758	{
618	if (coro_mortal)	759	if (expect_true (coro_mortal))
619	{	760	{
620	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
621	coro_mortal = 0;	762	coro_mortal = 0;
622	}	763	}
		764	}
		765
		766	static int
		767	runops_trace (pTHX)
		768	{
		769	COP *oldcop = 0;
		770	int oldcxix = -2;
		771	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		772	coro_cctx *cctx = coro->cctx;
		773
		774	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		775	{
		776	PERL_ASYNC_CHECK ();
		777
		778	if (cctx->flags & CC_TRACE_ALL)
		779	{
		780	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		781	{
		782	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		783	SV **bot, **top;
		784	AV *av = newAV (); /* return values */
		785	SV **cb;
		786	dSP;
		787
		788	GV *gv = CvGV (cx->blk_sub.cv);
		789	SV *fullname = sv_2mortal (newSV (0));
		790	if (isGV (gv))
		791	gv_efullname3 (fullname, gv, 0);
		792
		793	bot = PL_stack_base + cx->blk_oldsp + 1;
		794	top = cx->blk_gimme == G_ARRAY ? SP + 1
		795	: cx->blk_gimme == G_SCALAR ? bot + 1
		796	: bot;
		797
		798	av_extend (av, top - bot);
		799	while (bot < top)
		800	av_push (av, SvREFCNT_inc (*bot++));
		801
		802	PL_runops = RUNOPS_DEFAULT;
		803	ENTER;
		804	SAVETMPS;
		805	EXTEND (SP, 3);
		806	PUSHMARK (SP);
		807	PUSHs (&PL_sv_no);
		808	PUSHs (fullname);
		809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		810	PUTBACK;
		811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		812	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		813	SPAGAIN;
		814	FREETMPS;
		815	LEAVE;
		816	PL_runops = runops_trace;
		817	}
		818
		819	if (oldcop != PL_curcop)
		820	{
		821	oldcop = PL_curcop;
		822
		823	if (PL_curcop != &PL_compiling)
		824	{
		825	SV **cb;
		826
		827	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		828	{
		829	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		830
		831	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		832	{
		833	runops_proc_t old_runops = PL_runops;
		834	dSP;
		835	GV *gv = CvGV (cx->blk_sub.cv);
		836	SV *fullname = sv_2mortal (newSV (0));
		837
		838	if (isGV (gv))
		839	gv_efullname3 (fullname, gv, 0);
		840
		841	PL_runops = RUNOPS_DEFAULT;
		842	ENTER;
		843	SAVETMPS;
		844	EXTEND (SP, 3);
		845	PUSHMARK (SP);
		846	PUSHs (&PL_sv_yes);
		847	PUSHs (fullname);
		848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		849	PUTBACK;
		850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		851	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		852	SPAGAIN;
		853	FREETMPS;
		854	LEAVE;
		855	PL_runops = runops_trace;
		856	}
		857
		858	oldcxix = cxstack_ix;
		859	}
		860
		861	if (cctx->flags & CC_TRACE_LINE)
		862	{
		863	dSP;
		864
		865	PL_runops = RUNOPS_DEFAULT;
		866	ENTER;
		867	SAVETMPS;
		868	EXTEND (SP, 3);
		869	PL_runops = RUNOPS_DEFAULT;
		870	PUSHMARK (SP);
		871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		873	PUTBACK;
		874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		875	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		876	SPAGAIN;
		877	FREETMPS;
		878	LEAVE;
		879	PL_runops = runops_trace;
		880	}
		881	}
		882	}
		883	}
		884	}
		885
		886	TAINT_NOT;
		887	return 0;
623	}	888	}
624		889
625	/* inject a fake call to Coro::State::_cctx_init into the execution */	890	/* inject a fake call to Coro::State::_cctx_init into the execution */
626	/* _cctx_init should be careful, as it could be called at almost any time */	891	/* _cctx_init should be careful, as it could be called at almost any time */
627	/* during execution of a perl program */	892	/* during execution of a perl program */
628	static void NOINLINE	893	static void NOINLINE
629	prepare_cctx (pTHX_ coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
630	{	895	{
631	dSP;	896	dSP;
632	LOGOP myop;	897	LOGOP myop;
		898
		899	PL_top_env = &PL_start_env;
		900
		901	if (cctx->flags & CC_TRACE)
		902	PL_runops = runops_trace;
633		903
634	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
635	myop.op_next = PL_op;	905	myop.op_next = PL_op;
636	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	906	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
637		907
…		…
647		917
648	/*	918	/*
649	* this is a _very_ stripped down perl interpreter ;)	919	* this is a _very_ stripped down perl interpreter ;)
650	*/	920	*/
651	static void	921	static void
652	coro_run (void *arg)	922	cctx_run (void *arg)
653	{	923	{
654	dTHX;	924	dTHX;
655		925
656	/* coro_run is the alternative tail of transfer(), so unlock here. */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
657	UNLOCK;	927	UNLOCK;
658		928
659	PL_top_env = &PL_start_env;	929	/* we now skip the entersub that lead to transfer() */
		930	PL_op = PL_op->op_next;
660		931
661	/* inject a fake subroutine call to cctx_init */	932	/* inject a fake subroutine call to cctx_init */
662	prepare_cctx (aTHX_ (coro_cctx *)arg);	933	cctx_prepare (aTHX_ (coro_cctx *)arg);
663		934
664	/* somebody or something will hit me for both perl_run and PL_restartop */	935	/* somebody or something will hit me for both perl_run and PL_restartop */
665	PL_restartop = PL_op;	936	PL_restartop = PL_op;
666	perl_run (PL_curinterp);	937	perl_run (PL_curinterp);
667		938
…		…
682	coro_cctx *cctx;	953	coro_cctx *cctx;
683	void *stack_start;	954	void *stack_start;
684	size_t stack_size;	955	size_t stack_size;
685		956
686	++cctx_count;	957	++cctx_count;
		958	fprintf (stderr, "bp1\n");//D
687		959
688	Newz (0, cctx, 1, coro_cctx);	960	Newz (0, cctx, 1, coro_cctx);
689		961
690	#if HAVE_MMAP	962	#if HAVE_MMAP
691
692	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	963	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
693	/* mmap supposedly does allocate-on-write for us */	964	/* mmap supposedly does allocate-on-write for us */
694	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	965	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
695		966
696	if (cctx->sptr != (void *)-1)	967	if (cctx->sptr != (void *)-1)
…		…
698	# if CORO_STACKGUARD	969	# if CORO_STACKGUARD
699	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	970	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
700	# endif	971	# endif
701	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	972	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
702	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	973	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
703	cctx->mapped = 1;	974	cctx->flags |= CC_MAPPED;
704	}	975	}
705	else	976	else
706	#endif	977	#endif
707	{	978	{
708	cctx->ssize = coro_stacksize * (long)sizeof (long);	979	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
717	stack_start = cctx->sptr;	988	stack_start = cctx->sptr;
718	stack_size = cctx->ssize;	989	stack_size = cctx->ssize;
719	}	990	}
720		991
721	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	992	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
722	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	993	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
723		994
724	return cctx;	995	return cctx;
725	}	996	}
726		997
727	static void	998	static void
…		…
735	#if CORO_USE_VALGRIND	1006	#if CORO_USE_VALGRIND
736	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1007	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
737	#endif	1008	#endif
738		1009
739	#if HAVE_MMAP	1010	#if HAVE_MMAP
740	if (cctx->mapped)	1011	if (cctx->flags & CC_MAPPED)
741	munmap (cctx->sptr, cctx->ssize);	1012	munmap (cctx->sptr, cctx->ssize);
742	else	1013	else
743	#endif	1014	#endif
744	Safefree (cctx->sptr);	1015	Safefree (cctx->sptr);
745		1016
746	Safefree (cctx);	1017	Safefree (cctx);
747	}	1018	}
748		1019
		1020	/* wether this cctx should be destructed */
		1021	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1022
749	static coro_cctx *	1023	static coro_cctx *
750	cctx_get (pTHX)	1024	cctx_get (pTHX)
751	{	1025	{
752	while (cctx_first)	1026	while (expect_true (cctx_first))
753	{	1027	{
754	coro_cctx *cctx = cctx_first;	1028	coro_cctx *cctx = cctx_first;
755	cctx_first = cctx->next;	1029	cctx_first = cctx->next;
756	--cctx_idle;	1030	--cctx_idle;
757		1031
758	if (cctx->ssize >= coro_stacksize)	1032	if (expect_true (!CCTX_EXPIRED (cctx)))
759	return cctx;	1033	return cctx;
760		1034
761	cctx_destroy (cctx);	1035	cctx_destroy (cctx);
762	}	1036	}
763		1037
764	PL_op = PL_op->op_next;
765	return cctx_new ();	1038	return cctx_new ();
766	}	1039	}
767		1040
768	static void	1041	static void
769	cctx_put (coro_cctx *cctx)	1042	cctx_put (coro_cctx *cctx)
770	{	1043	{
771	/* free another cctx if overlimit */	1044	/* free another cctx if overlimit */
772	if (cctx_idle >= MAX_IDLE_CCTX)	1045	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
773	{	1046	{
774	coro_cctx *first = cctx_first;	1047	coro_cctx *first = cctx_first;
775	cctx_first = first->next;	1048	cctx_first = first->next;
776	--cctx_idle;	1049	--cctx_idle;
777		1050
778	assert (!first->inuse);
779	cctx_destroy (first);	1051	cctx_destroy (first);
780	}	1052	}
781		1053
782	++cctx_idle;	1054	++cctx_idle;
783	cctx->next = cctx_first;	1055	cctx->next = cctx_first;
784	cctx_first = cctx;	1056	cctx_first = cctx;
785	}	1057	}
786		1058
787	/** coroutine switching *****************************************************/	1059	/** coroutine switching *****************************************************/
788		1060
789	/* never call directly, always through the coro_state_transfer global variable */	1061	static void
		1062	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1063	{
		1064	if (expect_true (prev != next))
		1065	{
		1066	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1067	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1068
		1069	if (expect_false (next->flags & CF_RUNNING))
		1070	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1071
		1072	if (expect_false (next->flags & CF_DESTROYED))
		1073	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1074
		1075	if (
		1076	#if PERL_VERSION_ATLEAST (5,9,0)
		1077	expect_false (PL_parser)
		1078	#else
		1079	expect_false (PL_lex_state != LEX_NOTPARSING)
		1080	#endif
		1081	)
		1082	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1083	}
		1084	}
		1085
		1086	/* always use the TRANSFER macro */
790	static void NOINLINE	1087	static void NOINLINE
791	transfer (pTHX_ struct coro *prev, struct coro *next)	1088	transfer (pTHX_ struct coro *prev, struct coro *next)
792	{	1089	{
793	dSTACKLEVEL;	1090	dSTACKLEVEL;
794		1091
795	/* sometimes transfer is only called to set idle_sp */	1092	/* sometimes transfer is only called to set idle_sp */
796	if (!next)	1093	if (expect_false (!next))
797	{	1094	{
798	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1095	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
799	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1096	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
800	}	1097	}
801	else if (prev != next)	1098	else if (expect_true (prev != next))
802	{	1099	{
803	coro_cctx *prev__cctx;	1100	coro_cctx *prev__cctx;
804		1101
805	if (prev->flags & CF_NEW)	1102	if (expect_false (prev->flags & CF_NEW))
806	{	1103	{
807	/* create a new empty context */	1104	/* create a new empty context */
808	Newz (0, prev->cctx, 1, coro_cctx);	1105	Newz (0, prev->cctx, 1, coro_cctx);
809	prev->cctx->inuse = 1;
810	prev->flags &= ~CF_NEW;	1106	prev->flags &= ~CF_NEW;
811	prev->flags |= CF_RUNNING;	1107	prev->flags |= CF_RUNNING;
812	}	1108	}
813		1109
814	/*TODO: must not croak here */
815	if (!prev->flags & CF_RUNNING)
816	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
817
818	if (next->flags & CF_RUNNING)
819	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
820
821	if (next->flags & CF_DESTROYED)
822	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
823
824	prev->flags &= ~CF_RUNNING;	1110	prev->flags &= ~CF_RUNNING;
825	next->flags |= CF_RUNNING;	1111	next->flags |= CF_RUNNING;
826		1112
827	LOCK;	1113	LOCK;
828		1114
829	if (next->flags & CF_NEW)	1115	if (expect_false (next->flags & CF_NEW))
830	{	1116	{
831	/* need to start coroutine */	1117	/* need to start coroutine */
832	next->flags &= ~CF_NEW;	1118	next->flags &= ~CF_NEW;
833	/* first get rid of the old state */	1119	/* first get rid of the old state */
834	save_perl (aTHX_ prev);	1120	save_perl (aTHX_ prev);
835	/* setup coroutine call */	1121	/* setup coroutine call */
836	setup_coro (aTHX_ next);	1122	coro_setup (aTHX_ next);
837	/* need a new stack */
838	assert (!next->cctx);
839	}	1123	}
840	else	1124	else
841	{	1125	{
842	/* coroutine already started */	1126	/* coroutine already started */
843	save_perl (aTHX_ prev);	1127	save_perl (aTHX_ prev);
…		…
845	}	1129	}
846		1130
847	prev__cctx = prev->cctx;	1131	prev__cctx = prev->cctx;
848		1132
849	/* possibly "free" the cctx */	1133	/* possibly "free" the cctx */
850	if (prev__cctx->idle_sp == STACKLEVEL)	1134	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
851	{	1135	{
852	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1136	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
853	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1137	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
854		1138
855	prev->cctx = 0;	1139	prev->cctx = 0;
856		1140
		1141	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1142	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1143	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1144	if (!next->cctx)
		1145	next->cctx = cctx_get (aTHX);
		1146
857	cctx_put (prev__cctx);	1147	cctx_put (prev__cctx);
858	prev__cctx->inuse = 0;
859	}	1148	}
860		1149
		1150	++next->usecount;
		1151
861	if (!next->cctx)	1152	if (expect_true (!next->cctx))
862	{
863	next->cctx = cctx_get (aTHX);	1153	next->cctx = cctx_get (aTHX);
864	assert (!next->cctx->inuse);
865	next->cctx->inuse = 1;
866	}
867		1154
868	if (prev__cctx != next->cctx)	1155	if (expect_false (prev__cctx != next->cctx))
869	{	1156	{
870	prev__cctx->top_env = PL_top_env;	1157	prev__cctx->top_env = PL_top_env;
871	PL_top_env = next->cctx->top_env;	1158	PL_top_env = next->cctx->top_env;
872	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1159	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
873	}	1160	}
874		1161
875	free_coro_mortal (aTHX);	1162	free_coro_mortal (aTHX);
876	UNLOCK;	1163	UNLOCK;
		1164
		1165	if (expect_false (prev->throw || next->throw))
		1166	{
		1167	struct coro *coro = SvSTATE (coro_current);
		1168
		1169	if (coro->throw)
		1170	{
		1171	SV *exception = coro->throw;
		1172	coro->throw = 0;
		1173	sv_setsv (ERRSV, exception);
		1174	croak (0);
		1175	}
		1176	}
877	}	1177	}
878	}	1178	}
879		1179
880	struct transfer_args	1180	struct transfer_args
881	{	1181	{
882	struct coro *prev, *next;	1182	struct coro *prev, *next;
883	};	1183	};
884		1184
885	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1185	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1186	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
886		1187
887	/** high level stuff ********************************************************/	1188	/** high level stuff ********************************************************/
888		1189
889	static int	1190	static int
890	coro_state_destroy (pTHX_ struct coro *coro)	1191	coro_state_destroy (pTHX_ struct coro *coro)
…		…
907		1208
908	if (coro->mainstack && coro->mainstack != main_mainstack)	1209	if (coro->mainstack && coro->mainstack != main_mainstack)
909	{	1210	{
910	struct coro temp;	1211	struct coro temp;
911		1212
912	assert (!(coro->flags & CF_RUNNING));
913
914	Zero (&temp, 1, struct coro);
915	temp.save = CORO_SAVE_ALL;
916
917	if (coro->flags & CF_RUNNING)	1213	if (coro->flags & CF_RUNNING)
918	croak ("FATAL: tried to destroy currently running coroutine");	1214	croak ("FATAL: tried to destroy currently running coroutine");
919		1215
920	save_perl (aTHX_ &temp);	1216	save_perl (aTHX_ &temp);
921	load_perl (aTHX_ coro);	1217	load_perl (aTHX_ coro);
922		1218
923	coro_destroy_stacks (aTHX);	1219	coro_destroy (aTHX_ coro);
924		1220
925	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1221	load_perl (aTHX_ &temp);
926		1222
927	coro->mainstack = 0;	1223	coro->slot = 0;
928	}	1224	}
929		1225
930	cctx_destroy (coro->cctx);	1226	cctx_destroy (coro->cctx);
931	SvREFCNT_dec (coro->args);	1227	SvREFCNT_dec (coro->args);
932		1228
…		…
973	#else	1269	#else
974	# define MGf_DUP 0	1270	# define MGf_DUP 0
975	#endif	1271	#endif
976	};	1272	};
977		1273
978	static struct coro *
979	SvSTATE_ (pTHX_ SV *coro)
980	{
981	HV *stash;
982	MAGIC *mg;
983
984	if (SvROK (coro))
985	coro = SvRV (coro);
986
987	stash = SvSTASH (coro);
988	if (stash != coro_stash && stash != coro_state_stash)
989	{
990	/* very slow, but rare, check */
991	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
992	croak ("Coro::State object required");
993	}
994
995	mg = CORO_MAGIC (coro);
996	return (struct coro *)mg->mg_ptr;
997	}
998
999	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1000
1001	static void	1274	static void
1002	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1275	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1003	{	1276	{
1004	ta->prev = SvSTATE (prev_sv);	1277	ta->prev = SvSTATE (prev_sv);
1005	ta->next = SvSTATE (next_sv);	1278	ta->next = SvSTATE (next_sv);
		1279	TRANSFER_CHECK (*ta);
1006	}	1280	}
1007		1281
1008	static void	1282	static void
1009	api_transfer (SV *prev_sv, SV *next_sv)	1283	api_transfer (SV *prev_sv, SV *next_sv)
1010	{	1284	{
1011	dTHX;	1285	dTHX;
1012	struct transfer_args ta;	1286	struct transfer_args ta;
1013		1287
1014	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1288	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1015	TRANSFER (ta);	1289	TRANSFER (ta);
1016	}
1017
1018	static int
1019	api_save (SV *coro_sv, int new_save)
1020	{
1021	dTHX;
1022	struct coro *coro = SvSTATE (coro_sv);
1023	int old_save = coro->save;
1024
1025	if (new_save >= 0)
1026	coro->save = new_save;
1027
1028	return old_save;
1029	}	1290	}
1030		1291
1031	/** Coro ********************************************************************/	1292	/** Coro ********************************************************************/
1032		1293
1033	static void	1294	static void
…		…
1092	{	1353	{
1093	LOCK;	1354	LOCK;
1094	next_sv = coro_deq (aTHX_ PRIO_MIN);	1355	next_sv = coro_deq (aTHX_ PRIO_MIN);
1095		1356
1096	/* nothing to schedule: call the idle handler */	1357	/* nothing to schedule: call the idle handler */
1097	if (!next_sv)	1358	if (expect_false (!next_sv))
1098	{	1359	{
1099	dSP;	1360	dSP;
1100	UNLOCK;	1361	UNLOCK;
1101		1362
1102	ENTER;	1363	ENTER;
…		…
1112	}	1373	}
1113		1374
1114	ta->next = SvSTATE (next_sv);	1375	ta->next = SvSTATE (next_sv);
1115		1376
1116	/* cannot transfer to destroyed coros, skip and look for next */	1377	/* cannot transfer to destroyed coros, skip and look for next */
1117	if (ta->next->flags & CF_DESTROYED)	1378	if (expect_false (ta->next->flags & CF_DESTROYED))
1118	{	1379	{
1119	UNLOCK;	1380	UNLOCK;
1120	SvREFCNT_dec (next_sv);	1381	SvREFCNT_dec (next_sv);
1121	/* coro_nready is already taken care of by destroy */	1382	/* coro_nready is already taken care of by destroy */
1122	continue;	1383	continue;
…		…
1127	break;	1388	break;
1128	}	1389	}
1129		1390
1130	/* free this only after the transfer */	1391	/* free this only after the transfer */
1131	prev_sv = SvRV (coro_current);	1392	prev_sv = SvRV (coro_current);
1132	SvRV_set (coro_current, next_sv);
1133	ta->prev = SvSTATE (prev_sv);	1393	ta->prev = SvSTATE (prev_sv);
1134		1394	TRANSFER_CHECK (*ta);
1135	assert (ta->next->flags & CF_READY);	1395	assert (ta->next->flags & CF_READY);
1136	ta->next->flags &= ~CF_READY;	1396	ta->next->flags &= ~CF_READY;
		1397	SvRV_set (coro_current, next_sv);
1137		1398
1138	LOCK;	1399	LOCK;
1139	free_coro_mortal (aTHX);	1400	free_coro_mortal (aTHX);
1140	coro_mortal = prev_sv;	1401	coro_mortal = prev_sv;
1141	UNLOCK;	1402	UNLOCK;
…		…
1178	dTHX;	1439	dTHX;
1179	struct transfer_args ta;	1440	struct transfer_args ta;
1180		1441
1181	prepare_cede (aTHX_ &ta);	1442	prepare_cede (aTHX_ &ta);
1182		1443
1183	if (ta.prev != ta.next)	1444	if (expect_true (ta.prev != ta.next))
1184	{	1445	{
1185	TRANSFER (ta);	1446	TRANSFER (ta);
1186	return 1;	1447	return 1;
1187	}	1448	}
1188	else	1449	else
…		…
1202	}	1463	}
1203	else	1464	else
1204	return 0;	1465	return 0;
1205	}	1466	}
1206		1467
		1468	static void
		1469	api_trace (SV *coro_sv, int flags)
		1470	{
		1471	dTHX;
		1472	struct coro *coro = SvSTATE (coro_sv);
		1473
		1474	if (flags & CC_TRACE)
		1475	{
		1476	if (!coro->cctx)
		1477	coro->cctx = cctx_new ();
		1478	else if (!(coro->cctx->flags & CC_TRACE))
		1479	croak ("cannot enable tracing on coroutine with custom stack");
		1480
		1481	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1482	}
		1483	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1484	{
		1485	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1486
		1487	if (coro->flags & CF_RUNNING)
		1488	PL_runops = RUNOPS_DEFAULT;
		1489	else
		1490	coro->slot->runops = RUNOPS_DEFAULT;
		1491	}
		1492	}
		1493
1207	MODULE = Coro::State PACKAGE = Coro::State	1494	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1208		1495
1209	PROTOTYPES: DISABLE	1496	PROTOTYPES: DISABLE
1210		1497
1211	BOOT:	1498	BOOT:
1212	{	1499	{
1213	#ifdef USE_ITHREADS	1500	#ifdef USE_ITHREADS
1214	MUTEX_INIT (&coro_mutex);	1501	MUTEX_INIT (&coro_mutex);
1215	#endif	1502	#endif
1216	BOOT_PAGESIZE;	1503	BOOT_PAGESIZE;
1217		1504
		1505	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1506	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1507
		1508	hv_sig = coro_get_hv ("SIG", TRUE);
		1509	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1510	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1511
		1512	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1513	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1514
1218	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1515	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1219		1516
1220	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1222	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1223	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1226	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1227		1521
1228	main_mainstack = PL_mainstack;	1522	main_mainstack = PL_mainstack;
1229	main_top_env = PL_top_env;	1523	main_top_env = PL_top_env;
1230		1524
1231	while (main_top_env->je_prev)	1525	while (main_top_env->je_prev)
…		…
1244	struct coro *coro;	1538	struct coro *coro;
1245	HV *hv;	1539	HV *hv;
1246	int i;	1540	int i;
1247		1541
1248	Newz (0, coro, 1, struct coro);	1542	Newz (0, coro, 1, struct coro);
1249	coro->args = newAV ();	1543	coro->args = newAV ();
1250	coro->save = CORO_SAVE_DEF;
1251	coro->flags = CF_NEW;	1544	coro->flags = CF_NEW;
1252		1545
1253	if (coro_first) coro_first->prev = coro;	1546	if (coro_first) coro_first->prev = coro;
1254	coro->next = coro_first;	1547	coro->next = coro_first;
1255	coro_first = coro;	1548	coro_first = coro;
1256		1549
1257	coro->hv = hv = newHV ();	1550	coro->hv = hv = newHV ();
1258	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1551	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1259	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1552	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1260		1553
		1554	av_extend (coro->args, items - 1);
1261	for (i = 1; i < items; i++)	1555	for (i = 1; i < items; i++)
1262	av_push (coro->args, newSVsv (ST (i)));	1556	av_push (coro->args, newSVsv (ST (i)));
1263	}	1557	}
1264	OUTPUT:	1558	OUTPUT:
1265	RETVAL	1559	RETVAL
1266		1560
1267	int	1561	# these not obviously related functions are all rolled into the same xs
1268	save (SV *coro, int new_save = -1)	1562	# function to increase chances that they all will call transfer with the same
1269	CODE:	1563	# stack offset
1270	RETVAL = api_save (coro, new_save);
1271	OUTPUT:
1272	RETVAL
1273
1274	int
1275	save_also (SV *coro_sv, int save_also)
1276	CODE:
1277	{
1278	struct coro *coro = SvSTATE (coro_sv);
1279	RETVAL = coro->save;
1280	coro->save |= save_also;
1281	}
1282	OUTPUT:
1283	RETVAL
1284
1285	void	1564	void
1286	_set_stacklevel (...)	1565	_set_stacklevel (...)
1287	ALIAS:	1566	ALIAS:
1288	Coro::State::transfer = 1	1567	Coro::State::transfer = 1
1289	Coro::schedule = 2	1568	Coro::schedule = 2
…		…
1323	}	1602	}
1324		1603
1325	BARRIER;	1604	BARRIER;
1326	TRANSFER (ta);	1605	TRANSFER (ta);
1327		1606
1328	if (GIMME_V != G_VOID && ta.next != ta.prev)	1607	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1329	XSRETURN_YES;	1608	XSRETURN_YES;
1330	}	1609	}
1331		1610
1332	bool	1611	bool
1333	_destroy (SV *coro_sv)	1612	_destroy (SV *coro_sv)
…		…
1375	if (coro->hv)	1654	if (coro->hv)
1376	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1655	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1377	}	1656	}
1378		1657
1379	void	1658	void
1380	_eval (Coro::State coro, SV *coderef)	1659	call (Coro::State coro, SV *coderef)
		1660	ALIAS:
		1661	eval = 1
1381	CODE:	1662	CODE:
1382	{	1663	{
1383	if (coro->mainstack)	1664	if (coro->mainstack)
1384	{	1665	{
1385	struct coro temp;	1666	struct coro temp;
1386	Zero (&temp, 1, struct coro);
1387	temp.save = CORO_SAVE_ALL;
1388		1667
1389	if (!(coro->flags & CF_RUNNING))	1668	if (!(coro->flags & CF_RUNNING))
1390	{	1669	{
1391	save_perl (aTHX_ &temp);	1670	save_perl (aTHX_ &temp);
1392	load_perl (aTHX_ coro);	1671	load_perl (aTHX_ coro);
…		…
1396	dSP;	1675	dSP;
1397	ENTER;	1676	ENTER;
1398	SAVETMPS;	1677	SAVETMPS;
1399	PUSHMARK (SP);	1678	PUSHMARK (SP);
1400	PUTBACK;	1679	PUTBACK;
		1680
		1681	if (ix)
		1682	eval_sv (coderef, 0);
		1683	else
1401	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1684	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1685
1402	SPAGAIN;	1686	SPAGAIN;
1403	FREETMPS;	1687	FREETMPS;
1404	LEAVE;	1688	LEAVE;
1405	PUTBACK;	1689	PUTBACK;
1406	}	1690	}
…		…
1410	save_perl (aTHX_ coro);	1694	save_perl (aTHX_ coro);
1411	load_perl (aTHX_ &temp);	1695	load_perl (aTHX_ &temp);
1412	}	1696	}
1413	}	1697	}
1414	}	1698	}
1415		1699
1416	SV *	1700	SV *
1417	is_ready (Coro::State coro)	1701	is_ready (Coro::State coro)
1418	PROTOTYPE: $	1702	PROTOTYPE: $
1419	ALIAS:	1703	ALIAS:
1420	is_ready = CF_READY	1704	is_ready = CF_READY
…		…
1424	CODE:	1708	CODE:
1425	RETVAL = boolSV (coro->flags & ix);	1709	RETVAL = boolSV (coro->flags & ix);
1426	OUTPUT:	1710	OUTPUT:
1427	RETVAL	1711	RETVAL
1428		1712
		1713	void
		1714	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1715
		1716	SV *
		1717	has_stack (Coro::State coro)
		1718	PROTOTYPE: $
		1719	CODE:
		1720	RETVAL = boolSV (!!coro->cctx);
		1721	OUTPUT:
		1722	RETVAL
		1723
		1724	int
		1725	is_traced (Coro::State coro)
		1726	PROTOTYPE: $
		1727	CODE:
		1728	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1729	OUTPUT:
		1730	RETVAL
		1731
1429	IV	1732	IV
1430	rss (Coro::State coro)	1733	rss (Coro::State coro)
1431	PROTOTYPE: $	1734	PROTOTYPE: $
		1735	ALIAS:
		1736	usecount = 1
1432	CODE:	1737	CODE:
1433	RETVAL = coro_rss (coro);	1738	switch (ix)
		1739	{
		1740	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1741	case 1: RETVAL = coro->usecount; break;
		1742	}
1434	OUTPUT:	1743	OUTPUT:
1435	RETVAL	1744	RETVAL
1436		1745
1437		1746
1438	MODULE = Coro::State PACKAGE = Coro	1747	MODULE = Coro::State PACKAGE = Coro
1439		1748
1440	BOOT:	1749	BOOT:
1441	{	1750	{
1442	int i;	1751	int i;
1443		1752
		1753	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1754	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1755	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1756
		1757	coro_current = coro_get_sv ("Coro::current", FALSE);
		1758	SvREADONLY_on (coro_current);
		1759
1444	coro_stash = gv_stashpv ("Coro", TRUE);	1760	coro_stash = gv_stashpv ("Coro", TRUE);
1445		1761
1446	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1762	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1447	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1763	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1448	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1764	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1449	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1765	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1450	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1766	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1451	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1767	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1452		1768
1453	coro_current = get_sv ("Coro::current", FALSE);
1454	SvREADONLY_on (coro_current);
1455
1456	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1769	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1457	coro_ready[i] = newAV ();	1770	coro_ready[i] = newAV ();
1458		1771
1459	{	1772	{
1460	SV *sv = perl_get_sv("Coro::API", 1);	1773	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1774	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1461		1775
1462	coroapi.schedule = api_schedule;	1776	coroapi.schedule = api_schedule;
1463	coroapi.save = api_save;
1464	coroapi.cede = api_cede;	1777	coroapi.cede = api_cede;
1465	coroapi.cede_notself = api_cede_notself;	1778	coroapi.cede_notself = api_cede_notself;
1466	coroapi.ready = api_ready;	1779	coroapi.ready = api_ready;
1467	coroapi.is_ready = api_is_ready;	1780	coroapi.is_ready = api_is_ready;
1468	coroapi.nready = &coro_nready;	1781	coroapi.nready = &coro_nready;
…		…
1517	CODE:	1830	CODE:
1518	RETVAL = coro_nready;	1831	RETVAL = coro_nready;
1519	OUTPUT:	1832	OUTPUT:
1520	RETVAL	1833	RETVAL
1521		1834
		1835	void
		1836	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1837	PROTOTYPE: $;$
		1838	CODE:
		1839	SvREFCNT_dec (self->throw);
		1840	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1841
		1842	# for async_pool speedup
		1843	void
		1844	_pool_1 (SV *cb)
		1845	CODE:
		1846	{
		1847	struct coro *coro = SvSTATE (coro_current);
		1848	HV *hv = (HV *)SvRV (coro_current);
		1849	AV *defav = GvAV (PL_defgv);
		1850	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1851	AV *invoke_av;
		1852	int i, len;
		1853
		1854	if (!invoke)
		1855	croak ("\3async_pool terminate\2\n");
		1856
		1857	SvREFCNT_dec (coro->saved_deffh);
		1858	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1859
		1860	hv_store (hv, "desc", sizeof ("desc") - 1,
		1861	newSVpvn (strpair ("[async_pool]")), 0);
		1862
		1863	invoke_av = (AV *)SvRV (invoke);
		1864	len = av_len (invoke_av);
		1865
		1866	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1867
		1868	if (len > 0)
		1869	{
		1870	av_fill (defav, len - 1);
		1871	for (i = 0; i < len; ++i)
		1872	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1873	}
		1874
		1875	SvREFCNT_dec (invoke);
		1876	}
		1877
		1878	void
		1879	_pool_2 (SV *cb)
		1880	CODE:
		1881	{
		1882	struct coro *coro = SvSTATE (coro_current);
		1883
		1884	sv_setsv (cb, &PL_sv_undef);
		1885
		1886	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1887	coro->saved_deffh = 0;
		1888
		1889	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1890	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1891	croak ("\3async_pool terminate\2\n");
		1892
		1893	av_clear (GvAV (PL_defgv));
		1894	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1895	newSVpvn (strpair ("[async_pool idle]")), 0);
		1896
		1897	coro->prio = 0;
		1898
		1899	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1900	api_trace (coro_current, 0);
		1901
		1902	av_push (av_async_pool, newSVsv (coro_current));
		1903	}
		1904
		1905
1522	MODULE = Coro::State PACKAGE = Coro::AIO	1906	MODULE = Coro::State PACKAGE = Coro::AIO
1523		1907
1524	SV *	1908	SV *
1525	_get_state ()	1909	_get_state ()
1526	CODE:	1910	CODE:

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