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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.202 by root, Mon Oct 8 02:50:23 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
…		…
75	/* 5.8.7 */	76	/* 5.8.7 */
76	#ifndef SvRV_set	77	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	78	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	79	#endif
79		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	90	# undef CORO_STACKGUARD
82	#endif	91	#endif
83		92
84	#ifndef CORO_STACKGUARD	93	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	97	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	99	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	100	#endif
92		101
93	/* The next macro should declare a variable stacklevel that contains and approximation	102	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	103	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
98		106
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		108
101	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	113	#else
105	# define attribute(x)	114	# define attribute(x)
106	# define BARRIER	115	# define BARRIER
		116	# define expect(expr,value) (expr)
107	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
108		121
109	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
110		123
111	#include "CoroAPI.h"	124	#include "CoroAPI.h"
112		125
…		…
117	#else	130	#else
118	# define LOCK (void)0	131	# define LOCK (void)0
119	# define UNLOCK (void)0	132	# define UNLOCK (void)0
120	#endif	133	#endif
121		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
122	/* helper storage struct for Coro::AIO */	137	/* helper storage struct for Coro::AIO */
123	struct io_state	138	struct io_state
124	{	139	{
125	int errorno;	140	int errorno;
126	I32 laststype;	141	I32 laststype;
…		…
129	};	144	};
130		145
131	static size_t coro_stacksize = CORO_STACKSIZE;	146	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	148	static AV *main_mainstack; /* used to differentiate between $main and others */
		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
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
137	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
138	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	};
139		176
140	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	178	typedef struct coro_cctx {
142	struct coro_cctx *next;	179	struct coro_cctx *next;
143		180
…		…
152	coro_context cctx;	189	coro_context cctx;
153		190
154	#if CORO_USE_VALGRIND	191	#if CORO_USE_VALGRIND
155	int valgrind_id;	192	int valgrind_id;
156	#endif	193	#endif
157	char inuse, mapped;	194	unsigned char flags;
158	} coro_cctx;	195	} coro_cctx;
159		196
160	enum {	197	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	202	};
166		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
167	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
168	struct coro {	218	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	220	coro_cctx *cctx;
171		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots *slot; /* basically the saved sp */
		225
172	/* data associated with this coroutine (initial args) */	226	/* data associated with this coroutine (initial args) */
173	AV *args;	227	AV *args;
174	int refcnt;	228	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	229	int flags; /* CF_ flags */
177		230
178	/* optionally saved, might be zero */	231	/* statistics */
179	AV *defav; /* @_ */	232	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	GV *deffh; /* default filehandle */
183	SV *irssv; /* $/ */
184	SV *irssv_sv; /* real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		233
190	/* coro process data */	234	/* coro process data */
191	int prio;	235	int prio;
		236	SV *throw;
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro *next, *prev;
		243	HV *hv; /* the perl hash associated with this coro, if any */
192	};	244	};
193		245
194	typedef struct coro *Coro__State;	246	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	247	typedef struct coro *Coro__State_or_hashref;
196		248
…		…
205		257
206	/* for Coro.pm */	258	/* for Coro.pm */
207	static SV *coro_current;	259	static SV *coro_current;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	261	static int coro_nready;
		262	static struct coro *coro_first;
210		263
211	/** 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	}
212		295
213	static AV *	296	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	297	coro_clone_padlist (pTHX_ CV *cv)
215	{	298	{
216	AV *padlist = CvPADLIST (cv);	299	AV *padlist = CvPADLIST (cv);
…		…
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
281	? SvMAGIC (cv) \	364	? SvMAGIC (cv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
283	: 0	366	: 0
284		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
285	/* the next two functions merely cache the padlists */	394	/* the next two functions merely cache the padlists */
286	static void	395	static void
287	get_padlist (pTHX_ CV *cv)	396	get_padlist (pTHX_ CV *cv)
288	{	397	{
289	MAGIC *mg = CORO_MAGIC (cv);	398	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	399	AV *av;
291		400
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	403	else
295	{	404	{
296	#if CORO_PREFER_PERL_FUNCTIONS	405	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	406	/* this is probably cleaner, but also slower? */
…		…
309	put_padlist (pTHX_ CV *cv)	418	put_padlist (pTHX_ CV *cv)
310	{	419	{
311	MAGIC *mg = CORO_MAGIC (cv);	420	MAGIC *mg = CORO_MAGIC (cv);
312	AV *av;	421	AV *av;
313		422
314	if (!mg)	423	if (expect_false (!mg))
315	{	424	{
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;	427	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();	428	mg->mg_obj = (SV *)newAV ();
320	}	429	}
321		430
322	av = (AV *)mg->mg_obj;	431	av = (AV *)mg->mg_obj;
323		432
324	if (AvFILLp (av) >= AvMAX (av))	433	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	434	av_extend (av, AvMAX (av) + 1);
326		435
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	436	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	437	}
329		438
330	/** load & save, init *******************************************************/	439	/** load & save, init *******************************************************/
331		440
332	#define SB do {
333	#define SE } while (0)
334
335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336
337	static void	441	static void
338	load_perl (pTHX_ Coro__State c)	442	load_perl (pTHX_ Coro__State c)
339	{	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
340	#define VAR(name,type) PL_ ## name = c->name;	454	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	455	# include "state.h"
342	#undef VAR	456	#undef VAR
343		457
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	458	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	459	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349	if (c->irssv)
350	{
351	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352	{
353	SvREFCNT_dec (c->irssv);
354	c->irssv = 0;
355	}
356	else
357	{
358	REPLACE_SV (PL_rs, c->irssv);
359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360	sv_setsv (c->irssv_sv, PL_rs);
361	}
362	}
363		460
364	{	461	{
365	dSP;	462	dSP;
		463
366	CV *cv;	464	CV *cv;
367		465
368	/* now do the ugly restore mess */	466	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	467	while (expect_true (cv = (CV *)POPs))
370	{	468	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	469	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	470	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	471	CvPADLIST (cv) = (AV *)POPs;
374	}	472	}
375		473
376	PUTBACK;	474	PUTBACK;
377	}	475	}
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	}	476	}
380		477
381	static void	478	static void
382	save_perl (pTHX_ Coro__State c)	479	save_perl (pTHX_ Coro__State c)
383	{	480	{
384	assert (!PL_comppad || AvARRAY (PL_comppad));//D
385	{	481	{
386	dSP;	482	dSP;
387	I32 cxix = cxstack_ix;	483	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	484	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	485	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	487	/*
392	* the worst thing you can imagine happens first - we have to save	488	* the worst thing you can imagine happens first - we have to save
393	* (and reinitialize) all cv's in the whole callchain :(	489	* (and reinitialize) all cv's in the whole callchain :(
394	*/	490	*/
395		491
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	492	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	493	/* this loop was inspired by pp_caller */
399	for (;;)	494	for (;;)
400	{	495	{
401	while (cxix >= 0)	496	while (expect_true (cxix >= 0))
402	{	497	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	498	PERL_CONTEXT *cx = &ccstk[cxix--];
404		499
405	if (CxTYPE (cx) == CXt_SUB)	500	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406	{	501	{
407	CV *cv = cx->blk_sub.cv;	502	CV *cv = cx->blk_sub.cv;
408		503
409	if (CvDEPTH (cv))	504	if (expect_true (CvDEPTH (cv)))
410	{	505	{
411	EXTEND (SP, 3);	506	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	507	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	508	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	509	PUSHs ((SV *)cv);
…		…
417	get_padlist (aTHX_ cv);	512	get_padlist (aTHX_ cv);
418	}	513	}
419	}	514	}
420	}	515	}
421		516
422	if (top_si->si_type == PERLSI_MAIN)	517	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	518	break;
424		519
425	top_si = top_si->si_prev;	520	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	521	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	522	cxix = top_si->si_cxix;
428	}	523	}
429		524
430	PUTBACK;	525	PUTBACK;
431	}	526	}
432		527
433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	528	/* allocate some space on the context stack for our purposes */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	529	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	530	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	531	if (SLOT_COUNT >= 2) CXINC;
437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	532	if (SLOT_COUNT >= 3) CXINC;
		533	{
		534	int i;
		535	for (i = 3; i < SLOT_COUNT; ++i)
		536	CXINC;
		537	}
		538	cxstack_ix -= SLOT_COUNT; /* undo allocation */
438		539
		540	c->mainstack = PL_mainstack;
		541
		542	{
		543	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		544
		545	slot->defav = GvAV (PL_defgv);
		546	slot->defsv = DEFSV;
		547	slot->errsv = ERRSV;
		548	slot->irsgv = GvSV (irsgv);
		549
439	#define VAR(name,type)c->name = PL_ ## name;	550	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	551	# include "state.h"
441	#undef VAR	552	#undef VAR
		553	}
442	}	554	}
443		555
444	/*	556	/*
445	* allocate various perl stacks. This is an exact copy	557	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	558	* of perl.c:init_stacks, except that it uses less memory
447	* on the (sometimes correct) assumption that coroutines do	559	* on the (sometimes correct) assumption that coroutines do
448	* not usually need a lot of stackspace.	560	* not usually need a lot of stackspace.
449	*/	561	*/
450	#if CORO_PREFER_PERL_FUNCTIONS	562	#if 1
451	# define coro_init_stacks init_stacks	563	# define coro_init_stacks init_stacks
452	#else	564	#else
453	static void	565	static void
454	coro_init_stacks (pTHX)	566	coro_init_stacks (pTHX)
455	{	567	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	568	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	569	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	570	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	571	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		572
461	PL_stack_base = AvARRAY(PL_curstack);	573	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	574	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	575	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		576
465	New(50,PL_tmps_stack,128,SV*);	577	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	578	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	579	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	580	PL_tmps_max = 32;
469		581
470	New(54,PL_markstack,32,I32);	582	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	583	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	584	PL_markstack_max = PL_markstack + 16;
473		585
474	#ifdef SET_MARK_OFFSET	586	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	587	SET_MARK_OFFSET;
476	#endif	588	#endif
477		589
478	New(54,PL_scopestack,32,I32);	590	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	591	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	592	PL_scopestack_max = 8;
481		593
482	New(54,PL_savestack,64,ANY);	594	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	595	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	596	PL_savestack_max = 24;
485		597
486	#if !PERL_VERSION_ATLEAST (5,9,0)	598	#if !PERL_VERSION_ATLEAST (5,9,0)
487	New(54,PL_retstack,16,OP*);	599	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	600	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	601	PL_retstack_max = 4;
490	#endif	602	#endif
491	}	603	}
492	#endif	604	#endif
493		605
494	/*	606	/*
495	* destroy the stacks, the callchain etc...	607	* destroy the stacks, the callchain etc...
496	*/	608	*/
497	static void	609	static void
498	coro_destroy_stacks (pTHX)	610	coro_destroy_stacks (pTHX)
499	{	611	{
500	if (!IN_DESTRUCT)
501	{
502	/* restore all saved variables and stuff */
503	LEAVE_SCOPE (0);
504	assert (PL_tmps_floor == -1);
505
506	/* free all temporaries */
507	FREETMPS;
508	assert (PL_tmps_ix == -1);
509
510	/* unwind all extra stacks */
511	POPSTACK_TO (PL_mainstack);
512
513	/* unwind main stack */
514	dounwind (-1);
515	}
516
517	while (PL_curstackinfo->si_next)	612	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	613	PL_curstackinfo = PL_curstackinfo->si_next;
519		614
520	while (PL_curstackinfo)	615	while (PL_curstackinfo)
521	{	616	{
…		…
536	#if !PERL_VERSION_ATLEAST (5,9,0)	631	#if !PERL_VERSION_ATLEAST (5,9,0)
537	Safefree (PL_retstack);	632	Safefree (PL_retstack);
538	#endif	633	#endif
539	}	634	}
540		635
		636	static size_t
		637	coro_rss (pTHX_ struct coro *coro)
		638	{
		639	size_t rss = sizeof (*coro);
		640
		641	if (coro->mainstack)
		642	{
		643	perl_slots tmp_slot;
		644	perl_slots *slot;
		645
		646	if (coro->flags & CF_RUNNING)
		647	{
		648	slot = &tmp_slot;
		649
		650	#define VAR(name,type) slot->name = PL_ ## name;
		651	# include "state.h"
		652	#undef VAR
		653	}
		654	else
		655	slot = coro->slot;
		656
		657	rss += sizeof (slot->curstackinfo);
		658	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		659	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		660	rss += slot->tmps_max * sizeof (SV *);
		661	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		662	rss += slot->scopestack_max * sizeof (I32);
		663	rss += slot->savestack_max * sizeof (ANY);
		664
		665	#if !PERL_VERSION_ATLEAST (5,9,0)
		666	rss += slot->retstack_max * sizeof (OP *);
		667	#endif
		668	}
		669
		670	return rss;
		671	}
		672
541	/** coroutine stack handling ************************************************/	673	/** coroutine stack handling ************************************************/
542		674
543	static void	675	static void
544	setup_coro (pTHX_ struct coro *coro)	676	coro_setup (pTHX_ struct coro *coro)
545	{	677	{
546	/*	678	/*
547	* emulate part of the perl startup here.	679	* emulate part of the perl startup here.
548	*/	680	*/
549	coro_init_stacks (aTHX);	681	coro_init_stacks (aTHX);
550		682
		683	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	684	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	685	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	686	PL_comppad = 0;
554	PL_curpm = 0;	687	PL_curpm = 0;
		688	PL_curpad = 0;
555	PL_localizing = 0;	689	PL_localizing = 0;
556	PL_dirty = 0;	690	PL_dirty = 0;
557	PL_restartop = 0;	691	PL_restartop = 0;
		692	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		693	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		694
		695	GvSV (PL_defgv) = newSV (0);
		696	GvAV (PL_defgv) = coro->args; coro->args = 0;
		697	GvSV (PL_errgv) = newSV (0);
		698	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		699	PL_rs = newSVsv (GvSV (irsgv));
		700	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
558		701
559	{	702	{
560	dSP;	703	dSP;
561	LOGOP myop;	704	LOGOP myop;
562		705
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	706	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	707	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	708	myop.op_flags = OPf_WANT_VOID;
569		709
570	PUSHMARK (SP);	710	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	711	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	712	PUTBACK;
573	PL_op = (OP *)&myop;	713	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	714	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	715	SPAGAIN;
576	}	716	}
577		717
578	ENTER; /* necessary e.g. for dounwind */	718	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		719	}
		720
		721	static void
		722	coro_destroy (pTHX_ struct coro *coro)
		723	{
		724	if (!IN_DESTRUCT)
		725	{
		726	/* restore all saved variables and stuff */
		727	LEAVE_SCOPE (0);
		728	assert (PL_tmps_floor == -1);
		729
		730	/* free all temporaries */
		731	FREETMPS;
		732	assert (PL_tmps_ix == -1);
		733
		734	/* unwind all extra stacks */
		735	POPSTACK_TO (PL_mainstack);
		736
		737	/* unwind main stack */
		738	dounwind (-1);
		739	}
		740
		741	SvREFCNT_dec (GvSV (PL_defgv));
		742	SvREFCNT_dec (GvAV (PL_defgv));
		743	SvREFCNT_dec (GvSV (PL_errgv));
		744	SvREFCNT_dec (PL_defoutgv);
		745	SvREFCNT_dec (PL_rs);
		746	SvREFCNT_dec (GvSV (irsgv));
		747
		748	SvREFCNT_dec (PL_diehook);
		749	SvREFCNT_dec (PL_warnhook);
		750
		751	SvREFCNT_dec (coro->saved_deffh);
		752	SvREFCNT_dec (coro->throw);
		753
		754	coro_destroy_stacks (aTHX);
579	}	755	}
580		756
581	static void	757	static void
582	free_coro_mortal (pTHX)	758	free_coro_mortal (pTHX)
583	{	759	{
584	if (coro_mortal)	760	if (expect_true (coro_mortal))
585	{	761	{
586	SvREFCNT_dec (coro_mortal);	762	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	763	coro_mortal = 0;
588	}	764	}
589	}	765	}
590		766
		767	static int
		768	runops_trace (pTHX)
		769	{
		770	COP *oldcop = 0;
		771	int oldcxix = -2;
		772	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		773	coro_cctx *cctx = coro->cctx;
		774
		775	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		776	{
		777	PERL_ASYNC_CHECK ();
		778
		779	if (cctx->flags & CC_TRACE_ALL)
		780	{
		781	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		782	{
		783	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		784	SV **bot, **top;
		785	AV *av = newAV (); /* return values */
		786	SV **cb;
		787	dSP;
		788
		789	GV *gv = CvGV (cx->blk_sub.cv);
		790	SV *fullname = sv_2mortal (newSV (0));
		791	if (isGV (gv))
		792	gv_efullname3 (fullname, gv, 0);
		793
		794	bot = PL_stack_base + cx->blk_oldsp + 1;
		795	top = cx->blk_gimme == G_ARRAY ? SP + 1
		796	: cx->blk_gimme == G_SCALAR ? bot + 1
		797	: bot;
		798
		799	av_extend (av, top - bot);
		800	while (bot < top)
		801	av_push (av, SvREFCNT_inc (*bot++));
		802
		803	PL_runops = RUNOPS_DEFAULT;
		804	ENTER;
		805	SAVETMPS;
		806	EXTEND (SP, 3);
		807	PUSHMARK (SP);
		808	PUSHs (&PL_sv_no);
		809	PUSHs (fullname);
		810	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		811	PUTBACK;
		812	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		813	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		814	SPAGAIN;
		815	FREETMPS;
		816	LEAVE;
		817	PL_runops = runops_trace;
		818	}
		819
		820	if (oldcop != PL_curcop)
		821	{
		822	oldcop = PL_curcop;
		823
		824	if (PL_curcop != &PL_compiling)
		825	{
		826	SV **cb;
		827
		828	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		829	{
		830	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		831
		832	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		833	{
		834	runops_proc_t old_runops = PL_runops;
		835	dSP;
		836	GV *gv = CvGV (cx->blk_sub.cv);
		837	SV *fullname = sv_2mortal (newSV (0));
		838
		839	if (isGV (gv))
		840	gv_efullname3 (fullname, gv, 0);
		841
		842	PL_runops = RUNOPS_DEFAULT;
		843	ENTER;
		844	SAVETMPS;
		845	EXTEND (SP, 3);
		846	PUSHMARK (SP);
		847	PUSHs (&PL_sv_yes);
		848	PUSHs (fullname);
		849	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		850	PUTBACK;
		851	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		852	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		853	SPAGAIN;
		854	FREETMPS;
		855	LEAVE;
		856	PL_runops = runops_trace;
		857	}
		858
		859	oldcxix = cxstack_ix;
		860	}
		861
		862	if (cctx->flags & CC_TRACE_LINE)
		863	{
		864	dSP;
		865
		866	PL_runops = RUNOPS_DEFAULT;
		867	ENTER;
		868	SAVETMPS;
		869	EXTEND (SP, 3);
		870	PL_runops = RUNOPS_DEFAULT;
		871	PUSHMARK (SP);
		872	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		873	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		874	PUTBACK;
		875	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		876	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		877	SPAGAIN;
		878	FREETMPS;
		879	LEAVE;
		880	PL_runops = runops_trace;
		881	}
		882	}
		883	}
		884	}
		885	}
		886
		887	TAINT_NOT;
		888	return 0;
		889	}
		890
591	/* inject a fake call to Coro::State::_cctx_init into the execution */	891	/* inject a fake call to Coro::State::_cctx_init into the execution */
		892	/* _cctx_init should be careful, as it could be called at almost any time */
		893	/* during execution of a perl program */
592	static void NOINLINE	894	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	895	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	896	{
595	dSP;	897	dSP;
596	LOGOP myop;	898	LOGOP myop;
		899
		900	PL_top_env = &PL_start_env;
		901
		902	if (cctx->flags & CC_TRACE)
		903	PL_runops = runops_trace;
597		904
598	Zero (&myop, 1, LOGOP);	905	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	906	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	907	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601		908
…		…
607	PL_op = (OP *)&myop;	914	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	915	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	916	SPAGAIN;
610	}	917	}
611		918
		919	/*
		920	* this is a _very_ stripped down perl interpreter ;)
		921	*/
612	static void	922	static void
613	coro_run (void *arg)	923	cctx_run (void *arg)
614	{	924	{
615	dTHX;	925	dTHX;
616		926
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	927	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	928	UNLOCK;
619		929
620	/*	930	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	931	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		932
625	/* inject call to cctx_init */	933	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	934	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		935
628	/* somebody will hit me for both perl_run and PL_restartop */	936	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	937	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	938	perl_run (PL_curinterp);
631		939
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	940	/*
633	abort ();	941	* If perl-run returns we assume exit() was being called or the coro
		942	* fell off the end, which seems to be the only valid (non-bug)
		943	* reason for perl_run to return. We try to exit by jumping to the
		944	* bootstrap-time "top" top_env, as we cannot restore the "main"
		945	* coroutine as Coro has no such concept
		946	*/
		947	PL_top_env = main_top_env;
		948	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	949	}
635		950
636	static coro_cctx *	951	static coro_cctx *
637	cctx_new ()	952	cctx_new ()
638	{	953	{
…		…
643	++cctx_count;	958	++cctx_count;
644		959
645	Newz (0, cctx, 1, coro_cctx);	960	Newz (0, cctx, 1, coro_cctx);
646		961
647	#if HAVE_MMAP	962	#if HAVE_MMAP
648
649	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;
650	/* mmap supposedly does allocate-on-write for us */	964	/* mmap supposedly does allocate-on-write for us */
651	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);
652		966
653	if (cctx->sptr != (void *)-1)	967	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	969	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	970	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	971	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	972	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	973	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	974	cctx->flags |= CC_MAPPED;
661	}	975	}
662	else	976	else
663	#endif	977	#endif
664	{	978	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	979	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	988	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	989	stack_size = cctx->ssize;
676	}	990	}
677		991
678	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	992	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679	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);
680		994
681	return cctx;	995	return cctx;
682	}	996	}
683		997
684	static void	998	static void
…		…
692	#if CORO_USE_VALGRIND	1006	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1007	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1008	#endif
695		1009
696	#if HAVE_MMAP	1010	#if HAVE_MMAP
697	if (cctx->mapped)	1011	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1012	munmap (cctx->sptr, cctx->ssize);
699	else	1013	else
700	#endif	1014	#endif
701	Safefree (cctx->sptr);	1015	Safefree (cctx->sptr);
702		1016
703	Safefree (cctx);	1017	Safefree (cctx);
704	}	1018	}
705		1019
		1020	/* wether this cctx should be destructed */
		1021	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1022
706	static coro_cctx *	1023	static coro_cctx *
707	cctx_get (pTHX)	1024	cctx_get (pTHX)
708	{	1025	{
709	while (cctx_first)	1026	while (expect_true (cctx_first))
710	{	1027	{
711	coro_cctx *cctx = cctx_first;	1028	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1029	cctx_first = cctx->next;
713	--cctx_idle;	1030	--cctx_idle;
714		1031
715	if (cctx->ssize >= coro_stacksize)	1032	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1033	return cctx;
717		1034
718	cctx_destroy (cctx);	1035	cctx_destroy (cctx);
719	}	1036	}
720		1037
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1038	return cctx_new ();
723	}	1039	}
724		1040
725	static void	1041	static void
726	cctx_put (coro_cctx *cctx)	1042	cctx_put (coro_cctx *cctx)
727	{	1043	{
728	/* free another cctx if overlimit */	1044	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1045	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1046	{
731	coro_cctx *first = cctx_first;	1047	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1048	cctx_first = first->next;
733	--cctx_idle;	1049	--cctx_idle;
734		1050
735	assert (!first->inuse);
736	cctx_destroy (first);	1051	cctx_destroy (first);
737	}	1052	}
738		1053
739	++cctx_idle;	1054	++cctx_idle;
740	cctx->next = cctx_first;	1055	cctx->next = cctx_first;
741	cctx_first = cctx;	1056	cctx_first = cctx;
742	}	1057	}
743		1058
744	/** coroutine switching *****************************************************/	1059	/** coroutine switching *****************************************************/
745		1060
746	/* 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 */
747	static void NOINLINE	1087	static void NOINLINE
748	transfer (pTHX_ struct coro *prev, struct coro *next)	1088	transfer (pTHX_ struct coro *prev, struct coro *next)
749	{	1089	{
750	dSTACKLEVEL;	1090	dSTACKLEVEL;
751		1091
752	/* sometimes transfer is only called to set idle_sp */	1092	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1093	if (expect_false (!next))
754	{	1094	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1095	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756	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 */
757	}	1097	}
758	else if (prev != next)	1098	else if (expect_true (prev != next))
759	{	1099	{
760	coro_cctx *prev__cctx;	1100	coro_cctx *prev__cctx;
761		1101
762	if (prev->flags & CF_NEW)	1102	if (expect_false (prev->flags & CF_NEW))
763	{	1103	{
764	/* create a new empty context */	1104	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1105	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1106	prev->flags &= ~CF_NEW;
768	prev->flags |= CF_RUNNING;	1107	prev->flags |= CF_RUNNING;
769	}	1108	}
770		1109
771	/*TODO: must not croak here */
772	if (!prev->flags & CF_RUNNING)
773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775	if (next->flags & CF_RUNNING)
776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778	if (next->flags & CF_DESTROYED)
779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781	prev->flags &= ~CF_RUNNING;	1110	prev->flags &= ~CF_RUNNING;
782	next->flags |= CF_RUNNING;	1111	next->flags |= CF_RUNNING;
783		1112
784	LOCK;	1113	LOCK;
785		1114
786	if (next->flags & CF_NEW)	1115	if (expect_false (next->flags & CF_NEW))
787	{	1116	{
788	/* need to start coroutine */	1117	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1118	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */	1119	/* first get rid of the old state */
791	save_perl (aTHX_ prev);	1120	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1121	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1122	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1123	}
797	else	1124	else
798	{	1125	{
799	/* coroutine already started */	1126	/* coroutine already started */
800	save_perl (aTHX_ prev);	1127	save_perl (aTHX_ prev);
…		…
802	}	1129	}
803		1130
804	prev__cctx = prev->cctx;	1131	prev__cctx = prev->cctx;
805		1132
806	/* possibly "free" the cctx */	1133	/* possibly "free" the cctx */
807	if (prev__cctx->idle_sp == STACKLEVEL)	1134	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
808	{	1135	{
809	/* 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 */
810	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));
811		1138
812	prev->cctx = 0;	1139	prev->cctx = 0;
813		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
814	cctx_put (prev__cctx);	1147	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1148	}
817		1149
		1150	++next->usecount;
		1151
818	if (!next->cctx)	1152	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1153	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1154
825	if (prev__cctx != next->cctx)	1155	if (expect_false (prev__cctx != next->cctx))
826	{	1156	{
827	prev__cctx->top_env = PL_top_env;	1157	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1158	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1159	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1160	}
831		1161
832	free_coro_mortal (aTHX);	1162	free_coro_mortal (aTHX);
833	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	}
834	}	1177	}
835	}	1178	}
836		1179
837	struct transfer_args	1180	struct transfer_args
838	{	1181	{
839	struct coro *prev, *next;	1182	struct coro *prev, *next;
840	};	1183	};
841		1184
842	#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)
843		1187
844	/** high level stuff ********************************************************/	1188	/** high level stuff ********************************************************/
845		1189
846	static int	1190	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1191	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1208
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1209	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1210	{
867	struct coro temp;	1211	struct coro temp;
868		1212
869	assert (!(coro->flags & CF_RUNNING));
870
871	Zero (&temp, 1, struct coro);
872	temp.save = CORO_SAVE_DEF;
873
874	if (coro->flags & CF_RUNNING)	1213	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1214	croak ("FATAL: tried to destroy currently running coroutine");
876		1215
877	save_perl (aTHX_ &temp);	1216	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1217	load_perl (aTHX_ coro);
879		1218
880	coro_destroy_stacks (aTHX);	1219	coro_destroy (aTHX_ coro);
881		1220
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1221	load_perl (aTHX_ &temp);
883		1222
884	coro->mainstack = 0;	1223	coro->slot = 0;
885	}	1224	}
886		1225
887	cctx_destroy (coro->cctx);	1226	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1227	SvREFCNT_dec (coro->args);
889		1228
		1229	if (coro->next) coro->next->prev = coro->prev;
		1230	if (coro->prev) coro->prev->next = coro->next;
		1231	if (coro == coro_first) coro_first = coro->next;
		1232
890	return 1;	1233	return 1;
891	}	1234	}
892		1235
893	static int	1236	static int
894	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1237	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895	{	1238	{
896	struct coro *coro = (struct coro *)mg->mg_ptr;	1239	struct coro *coro = (struct coro *)mg->mg_ptr;
897	mg->mg_ptr = 0;	1240	mg->mg_ptr = 0;
		1241
		1242	coro->hv = 0;
898		1243
899	if (--coro->refcnt < 0)	1244	if (--coro->refcnt < 0)
900	{	1245	{
901	coro_state_destroy (aTHX_ coro);	1246	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1247	Safefree (coro);
…		…
924	#else	1269	#else
925	# define MGf_DUP 0	1270	# define MGf_DUP 0
926	#endif	1271	#endif
927	};	1272	};
928		1273
929	static struct coro *
930	SvSTATE_ (pTHX_ SV *coro)
931	{
932	HV *stash;
933	MAGIC *mg;
934
935	if (SvROK (coro))
936	coro = SvRV (coro);
937
938	stash = SvSTASH (coro);
939	if (stash != coro_stash && stash != coro_state_stash)
940	{
941	/* very slow, but rare, check */
942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943	croak ("Coro::State object required");
944	}
945
946	mg = CORO_MAGIC (coro);
947	return (struct coro *)mg->mg_ptr;
948	}
949
950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952	static void	1274	static void
953	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)
954	{	1276	{
955	ta->prev = SvSTATE (prev_sv);	1277	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1278	ta->next = SvSTATE (next_sv);
		1279	TRANSFER_CHECK (*ta);
957	}	1280	}
958		1281
959	static void	1282	static void
960	api_transfer (SV *prev_sv, SV *next_sv)	1283	api_transfer (SV *prev_sv, SV *next_sv)
961	{	1284	{
962	dTHX;	1285	dTHX;
963	struct transfer_args ta;	1286	struct transfer_args ta;
964		1287
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1288	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1289	TRANSFER (ta);
967	}
968
969	static int
970	api_save (SV *coro_sv, int new_save)
971	{
972	dTHX;
973	struct coro *coro = SvSTATE (coro_sv);
974	int old_save = coro->save;
975
976	if (new_save >= 0)
977	coro->save = new_save;
978
979	return old_save;
980	}	1290	}
981		1291
982	/** Coro ********************************************************************/	1292	/** Coro ********************************************************************/
983		1293
984	static void	1294	static void
…		…
1043	{	1353	{
1044	LOCK;	1354	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1355	next_sv = coro_deq (aTHX_ PRIO_MIN);
1046		1356
1047	/* nothing to schedule: call the idle handler */	1357	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1358	if (expect_false (!next_sv))
1049	{	1359	{
1050	dSP;	1360	dSP;
1051	UNLOCK;	1361	UNLOCK;
1052		1362
1053	ENTER;	1363	ENTER;
…		…
1063	}	1373	}
1064		1374
1065	ta->next = SvSTATE (next_sv);	1375	ta->next = SvSTATE (next_sv);
1066		1376
1067	/* cannot transfer to destroyed coros, skip and look for next */	1377	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1378	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1379	{
1070	UNLOCK;	1380	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1381	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1382	/* coro_nready is already taken care of by destroy */
1073	continue;	1383	continue;
…		…
1078	break;	1388	break;
1079	}	1389	}
1080		1390
1081	/* free this only after the transfer */	1391	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1392	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1393	ta->prev = SvSTATE (prev_sv);
1085		1394	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1395	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1396	ta->next->flags &= ~CF_READY;
		1397	SvRV_set (coro_current, next_sv);
1088		1398
1089	LOCK;	1399	LOCK;
1090	free_coro_mortal (aTHX);	1400	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1401	coro_mortal = prev_sv;
1092	UNLOCK;	1402	UNLOCK;
…		…
1129	dTHX;	1439	dTHX;
1130	struct transfer_args ta;	1440	struct transfer_args ta;
1131		1441
1132	prepare_cede (aTHX_ &ta);	1442	prepare_cede (aTHX_ &ta);
1133		1443
1134	if (ta.prev != ta.next)	1444	if (expect_true (ta.prev != ta.next))
1135	{	1445	{
1136	TRANSFER (ta);	1446	TRANSFER (ta);
1137	return 1;	1447	return 1;
1138	}	1448	}
1139	else	1449	else
…		…
1153	}	1463	}
1154	else	1464	else
1155	return 0;	1465	return 0;
1156	}	1466	}
1157		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
1158	MODULE = Coro::State PACKAGE = Coro::State	1494	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1495
1160	PROTOTYPES: DISABLE	1496	PROTOTYPES: DISABLE
1161		1497
1162	BOOT:	1498	BOOT:
1163	{	1499	{
1164	#ifdef USE_ITHREADS	1500	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1501	MUTEX_INIT (&coro_mutex);
1166	#endif	1502	#endif
1167	BOOT_PAGESIZE;	1503	BOOT_PAGESIZE;
1168		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
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1515	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1516
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1521
1179	main_mainstack = PL_mainstack;	1522	main_mainstack = PL_mainstack;
		1523	main_top_env = PL_top_env;
		1524
		1525	while (main_top_env->je_prev)
		1526	main_top_env = main_top_env->je_prev;
1180		1527
1181	coroapi.ver = CORO_API_VERSION;	1528	coroapi.ver = CORO_API_VERSION;
1182	coroapi.transfer = api_transfer;	1529	coroapi.transfer = api_transfer;
1183		1530
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1531	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1191	struct coro *coro;	1538	struct coro *coro;
1192	HV *hv;	1539	HV *hv;
1193	int i;	1540	int i;
1194		1541
1195	Newz (0, coro, 1, struct coro);	1542	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1543	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1544	coro->flags = CF_NEW;
1199		1545
		1546	if (coro_first) coro_first->prev = coro;
		1547	coro->next = coro_first;
		1548	coro_first = coro;
		1549
1200	hv = newHV ();	1550	coro->hv = hv = newHV ();
1201	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;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1552	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1553
		1554	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1555	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1556	av_push (coro->args, newSVsv (ST (i)));
1206	}	1557	}
1207	OUTPUT:	1558	OUTPUT:
1208	RETVAL	1559	RETVAL
1209		1560
1210	int	1561	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1562	# function to increase chances that they all will call transfer with the same
1212	CODE:	1563	# stack offset
1213	RETVAL = api_save (coro, new_save);
1214	OUTPUT:
1215	RETVAL
1216
1217	int
1218	save_also (SV *coro_sv, int save_also)
1219	CODE:
1220	{
1221	struct coro *coro = SvSTATE (coro_sv);
1222	RETVAL = coro->save;
1223	coro->save |= save_also;
1224	}
1225	OUTPUT:
1226	RETVAL
1227
1228	void	1564	void
1229	_set_stacklevel (...)	1565	_set_stacklevel (...)
1230	ALIAS:	1566	ALIAS:
1231	Coro::State::transfer = 1	1567	Coro::State::transfer = 1
1232	Coro::schedule = 2	1568	Coro::schedule = 2
…		…
1266	}	1602	}
1267		1603
1268	BARRIER;	1604	BARRIER;
1269	TRANSFER (ta);	1605	TRANSFER (ta);
1270		1606
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1607	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1272	XSRETURN_YES;	1608	XSRETURN_YES;
1273	}	1609	}
1274		1610
1275	bool	1611	bool
1276	_destroy (SV *coro_sv)	1612	_destroy (SV *coro_sv)
…		…
1307	CODE:	1643	CODE:
1308	RETVAL = cctx_idle;	1644	RETVAL = cctx_idle;
1309	OUTPUT:	1645	OUTPUT:
1310	RETVAL	1646	RETVAL
1311		1647
		1648	void
		1649	list ()
		1650	PPCODE:
		1651	{
		1652	struct coro *coro;
		1653	for (coro = coro_first; coro; coro = coro->next)
		1654	if (coro->hv)
		1655	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1656	}
		1657
		1658	void
		1659	call (Coro::State coro, SV *coderef)
		1660	ALIAS:
		1661	eval = 1
		1662	CODE:
		1663	{
		1664	if (coro->mainstack)
		1665	{
		1666	struct coro temp;
		1667
		1668	if (!(coro->flags & CF_RUNNING))
		1669	{
		1670	save_perl (aTHX_ &temp);
		1671	load_perl (aTHX_ coro);
		1672	}
		1673
		1674	{
		1675	dSP;
		1676	ENTER;
		1677	SAVETMPS;
		1678	PUSHMARK (SP);
		1679	PUTBACK;
		1680
		1681	if (ix)
		1682	eval_sv (coderef, 0);
		1683	else
		1684	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1685
		1686	SPAGAIN;
		1687	FREETMPS;
		1688	LEAVE;
		1689	PUTBACK;
		1690	}
		1691
		1692	if (!(coro->flags & CF_RUNNING))
		1693	{
		1694	save_perl (aTHX_ coro);
		1695	load_perl (aTHX_ &temp);
		1696	}
		1697	}
		1698	}
		1699
		1700	SV *
		1701	is_ready (Coro::State coro)
		1702	PROTOTYPE: $
		1703	ALIAS:
		1704	is_ready = CF_READY
		1705	is_running = CF_RUNNING
		1706	is_new = CF_NEW
		1707	is_destroyed = CF_DESTROYED
		1708	CODE:
		1709	RETVAL = boolSV (coro->flags & ix);
		1710	OUTPUT:
		1711	RETVAL
		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
		1732	IV
		1733	rss (Coro::State coro)
		1734	PROTOTYPE: $
		1735	ALIAS:
		1736	usecount = 1
		1737	CODE:
		1738	switch (ix)
		1739	{
		1740	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1741	case 1: RETVAL = coro->usecount; break;
		1742	}
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746
1312	MODULE = Coro::State PACKAGE = Coro	1747	MODULE = Coro::State PACKAGE = Coro
1313		1748
1314	BOOT:	1749	BOOT:
1315	{	1750	{
1316	int i;	1751	int i;
1317		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
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1760	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1761
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1762	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1763	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1764	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1765	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1766	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1767	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1768
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1769	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1770	coro_ready[i] = newAV ();
1332		1771
1333	{	1772	{
1334	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 */
1335		1775
1336	coroapi.schedule = api_schedule;	1776	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1777	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1778	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1779	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1780	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1781	coroapi.nready = &coro_nready;
…		…
1383	CODE:	1822	CODE:
1384	RETVAL = boolSV (api_ready (self));	1823	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	1824	OUTPUT:
1386	RETVAL	1825	RETVAL
1387		1826
1388	SV *
1389	is_ready (SV *self)
1390	PROTOTYPE: $
1391	CODE:
1392	RETVAL = boolSV (api_is_ready (self));
1393	OUTPUT:
1394	RETVAL
1395
1396	int	1827	int
1397	nready (...)	1828	nready (...)
1398	PROTOTYPE:	1829	PROTOTYPE:
1399	CODE:	1830	CODE:
1400	RETVAL = coro_nready;	1831	RETVAL = coro_nready;
1401	OUTPUT:	1832	OUTPUT:
1402	RETVAL	1833	RETVAL
1403		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
1404	MODULE = Coro::State PACKAGE = Coro::AIO	1906	MODULE = Coro::State PACKAGE = Coro::AIO
1405		1907
1406	SV *	1908	SV *
1407	_get_state ()	1909	_get_state ()
1408	CODE:	1910	CODE:

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