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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.146 by root, Sat Mar 17 19:51:57 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;
…		…
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	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	228	int flags; /* CF_ flags */
		229	HV *hv; /* the perl hash associated with this coro, if any */
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	SV *irssv; /* $/ */
183	SV *irssv_sv; /* real $/ cache */
184
185	#define VAR(name,type) type name;
186	# include "state.h"
187	#undef VAR
188		233
189	/* coro process data */	234	/* coro process data */
190	int prio;	235	int prio;
		236	SV *throw; /* exception to be thrown */
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro *next, *prev;
191	};	243	};
192		244
193	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
194	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
195		247
…		…
204		256
205	/* for Coro.pm */	257	/* for Coro.pm */
206	static SV *coro_current;	258	static SV *coro_current;
207	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
208	static int coro_nready;	260	static int coro_nready;
		261	static struct coro *coro_first;
209		262
210	/** 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	}
211		294
212	static AV *	295	static AV *
213	coro_clone_padlist (pTHX_ CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
214	{	297	{
215	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
…		…
279	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
280	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
281	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
282	: 0	365	: 0
283		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
284	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
285	static void	394	static void
286	get_padlist (pTHX_ CV *cv)	395	get_padlist (pTHX_ CV *cv)
287	{	396	{
288	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
289	AV *av;	398	AV *av;
290		399
291	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
292	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
293	else	402	else
294	{	403	{
295	#if CORO_PREFER_PERL_FUNCTIONS	404	#if CORO_PREFER_PERL_FUNCTIONS
296	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
…		…
308	put_padlist (pTHX_ CV *cv)	417	put_padlist (pTHX_ CV *cv)
309	{	418	{
310	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
311	AV *av;	420	AV *av;
312		421
313	if (!mg)	422	if (expect_false (!mg))
314	{	423	{
315	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
316	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
317	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
318	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
319	}	428	}
320		429
321	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
322		431
323	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
324	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
325		434
326	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
327	}	436	}
328		437
329	/** load & save, init *******************************************************/	438	/** load & save, init *******************************************************/
330		439
331	#define SB do {
332	#define SE } while (0)
333
334	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
335
336	static void	440	static void
337	load_perl (pTHX_ Coro__State c)	441	load_perl (pTHX_ Coro__State c)
338	{	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
339	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
340	# include "state.h"	454	# include "state.h"
341	#undef VAR	455	#undef VAR
342		456
343	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
344	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
345	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
346	if (c->irssv)
347	{
348	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
349	SvREFCNT_dec (c->irssv);
350	else
351	{
352	REPLACE_SV (PL_rs, c->irssv);
353	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
354	sv_setsv (c->irssv_sv, PL_rs);
355	}
356	}
357		459
358	{	460	{
359	dSP;	461	dSP;
		462
360	CV *cv;	463	CV *cv;
361		464
362	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
363	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
364	{	467	{
365	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
366	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
367	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
368	}	471	}
369		472
370	PUTBACK;	473	PUTBACK;
371	}	474	}
372	assert (!PL_comppad || AvARRAY (PL_comppad));//D
373	}	475	}
374		476
375	static void	477	static void
376	save_perl (pTHX_ Coro__State c)	478	save_perl (pTHX_ Coro__State c)
377	{	479	{
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	{	480	{
380	dSP;	481	dSP;
381	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
382	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
383	PERL_SI *top_si = PL_curstackinfo;	484	PERL_SI *top_si = PL_curstackinfo;
…		…
385	/*	486	/*
386	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
387	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
388	*/	489	*/
389		490
390	EXTEND (SP, 3 + 1);
391	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
392	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
393	for (;;)	493	for (;;)
394	{	494	{
395	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
396	{	496	{
397	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
398		498
399	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
400	{	500	{
401	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
402		502
403	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
404	{	504	{
405	EXTEND (SP, 3);	505	EXTEND (SP, 3);
406	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
407	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
408	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
411	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
412	}	512	}
413	}	513	}
414	}	514	}
415		515
416	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
417	break;	517	break;
418		518
419	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
420	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
421	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
422	}	522	}
423		523
424	PUTBACK;	524	PUTBACK;
425	}	525	}
426		526
427	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 */
428	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
429	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
430	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
		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 */
431		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
432	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
433	# include "state.h"	550	# include "state.h"
434	#undef VAR	551	#undef VAR
		552	}
435	}	553	}
436		554
437	/*	555	/*
438	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
439	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
444	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
445	#else	563	#else
446	static void	564	static void
447	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
448	{	566	{
449	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
450	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		571
454	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		575
458	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
459	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
461	PL_tmps_max = 128;	579	PL_tmps_max = 32;
462		580
463	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
464	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
466		584
467	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
469	#endif	587	#endif
470		588
471	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
472	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
473	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
474		592
475	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
476	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
477	PL_savestack_max = 64;	595	PL_savestack_max = 24;
478		596
479	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
481	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
482	PL_retstack_max = 16;	600	PL_retstack_max = 4;
483	#endif	601	#endif
484	}	602	}
485	#endif	603	#endif
486		604
487	/*	605	/*
488	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
489	*/	607	*/
490	static void	608	static void
491	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
492	{	610	{
493	if (!IN_DESTRUCT)
494	{
495	/* restore all saved variables and stuff */
496	LEAVE_SCOPE (0);
497	assert (PL_tmps_floor == -1);
498
499	/* free all temporaries */
500	FREETMPS;
501	assert (PL_tmps_ix == -1);
502
503	/* unwind all extra stacks */
504	POPSTACK_TO (PL_mainstack);
505
506	/* unwind main stack */
507	dounwind (-1);
508	}
509
510	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
511	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
512		613
513	while (PL_curstackinfo)	614	while (PL_curstackinfo)
514	{	615	{
…		…
529	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	631	Safefree (PL_retstack);
531	#endif	632	#endif
532	}	633	}
533		634
		635	static size_t
		636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
534	/** coroutine stack handling ************************************************/	672	/** coroutine stack handling ************************************************/
535		673
536	static void	674	static void
537	setup_coro (pTHX_ struct coro *coro)	675	coro_setup (pTHX_ struct coro *coro)
538	{	676	{
539	/*	677	/*
540	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
541	*/	679	*/
542	coro_init_stacks (aTHX);	680	coro_init_stacks (aTHX);
543		681
		682	PL_runops = RUNOPS_DEFAULT;
544	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
545	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
546	PL_comppad = 0;	685	PL_comppad = 0;
547	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
548	PL_localizing = 0;	688	PL_localizing = 0;
549	PL_dirty = 0;	689	PL_dirty = 0;
550	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);
551		700
552	{	701	{
553	dSP;	702	dSP;
554	LOGOP myop;	703	LOGOP myop;
555		704
556	SvREFCNT_dec (GvAV (PL_defgv));
557	GvAV (PL_defgv) = coro->args; coro->args = 0;
558
559	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
560	myop.op_next = Nullop;	706	myop.op_next = Nullop;
561	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
562		708
563	PUSHMARK (SP);	709	PUSHMARK (SP);
564	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
565	PUTBACK;	711	PUTBACK;
566	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	714	SPAGAIN;
569	}	715	}
570		716
571	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);
572	}	754	}
573		755
574	static void	756	static void
575	free_coro_mortal (pTHX)	757	free_coro_mortal (pTHX)
576	{	758	{
577	if (coro_mortal)	759	if (expect_true (coro_mortal))
578	{	760	{
579	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
580	coro_mortal = 0;	762	coro_mortal = 0;
581	}	763	}
582	}	764	}
583		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;
		888	}
		889
584	/* 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 */
		891	/* _cctx_init should be careful, as it could be called at almost any time */
		892	/* during execution of a perl program */
585	static void NOINLINE	893	static void NOINLINE
586	prepare_cctx (pTHX_ coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
587	{	895	{
588	dSP;	896	dSP;
589	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;
590		903
591	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
592	myop.op_next = PL_op;	905	myop.op_next = PL_op;
593	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	906	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
594		907
…		…
600	PL_op = (OP *)&myop;	913	PL_op = (OP *)&myop;
601	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602	SPAGAIN;	915	SPAGAIN;
603	}	916	}
604		917
		918	/*
		919	* this is a _very_ stripped down perl interpreter ;)
		920	*/
605	static void	921	static void
606	coro_run (void *arg)	922	cctx_run (void *arg)
607	{	923	{
608	dTHX;	924	dTHX;
609		925
610	/* coro_run is the alternative tail of transfer(), so unlock here. */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
611	UNLOCK;	927	UNLOCK;
612		928
613	/*	929	/* we now skip the entersub that lead to transfer() */
614	* this is a _very_ stripped down perl interpreter ;)	930	PL_op = PL_op->op_next;
615	*/
616	PL_top_env = &PL_start_env;
617		931
618	/* inject call to cctx_init */	932	/* inject a fake subroutine call to cctx_init */
619	prepare_cctx (aTHX_ (coro_cctx *)arg);	933	cctx_prepare (aTHX_ (coro_cctx *)arg);
620		934
621	/* somebody will hit me for both perl_run and PL_restartop */	935	/* somebody or something will hit me for both perl_run and PL_restartop */
622	PL_restartop = PL_op;	936	PL_restartop = PL_op;
623	perl_run (PL_curinterp);	937	perl_run (PL_curinterp);
624		938
625	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	939	/*
626	abort ();	940	* If perl-run returns we assume exit() was being called or the coro
		941	* fell off the end, which seems to be the only valid (non-bug)
		942	* reason for perl_run to return. We try to exit by jumping to the
		943	* bootstrap-time "top" top_env, as we cannot restore the "main"
		944	* coroutine as Coro has no such concept
		945	*/
		946	PL_top_env = main_top_env;
		947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
627	}	948	}
628		949
629	static coro_cctx *	950	static coro_cctx *
630	cctx_new ()	951	cctx_new ()
631	{	952	{
632	coro_cctx *cctx;	953	coro_cctx *cctx;
633	void *stack_start;	954	void *stack_start;
634	size_t stack_size;	955	size_t stack_size;
635		956
636	++cctx_count;	957	++cctx_count;
		958	fprintf (stderr, "bp1\n");//D
637		959
638	Newz (0, cctx, 1, coro_cctx);	960	Newz (0, cctx, 1, coro_cctx);
639		961
640	#if HAVE_MMAP	962	#if HAVE_MMAP
641
642	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;
643	/* mmap supposedly does allocate-on-write for us */	964	/* mmap supposedly does allocate-on-write for us */
644	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);
645		966
646	if (cctx->sptr != (void *)-1)	967	if (cctx->sptr != (void *)-1)
…		…
648	# if CORO_STACKGUARD	969	# if CORO_STACKGUARD
649	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	970	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
650	# endif	971	# endif
651	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	972	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
652	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	973	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
653	cctx->mapped = 1;	974	cctx->flags |= CC_MAPPED;
654	}	975	}
655	else	976	else
656	#endif	977	#endif
657	{	978	{
658	cctx->ssize = coro_stacksize * (long)sizeof (long);	979	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
667	stack_start = cctx->sptr;	988	stack_start = cctx->sptr;
668	stack_size = cctx->ssize;	989	stack_size = cctx->ssize;
669	}	990	}
670		991
671	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	992	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	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);
673		994
674	return cctx;	995	return cctx;
675	}	996	}
676		997
677	static void	998	static void
…		…
685	#if CORO_USE_VALGRIND	1006	#if CORO_USE_VALGRIND
686	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1007	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
687	#endif	1008	#endif
688		1009
689	#if HAVE_MMAP	1010	#if HAVE_MMAP
690	if (cctx->mapped)	1011	if (cctx->flags & CC_MAPPED)
691	munmap (cctx->sptr, cctx->ssize);	1012	munmap (cctx->sptr, cctx->ssize);
692	else	1013	else
693	#endif	1014	#endif
694	Safefree (cctx->sptr);	1015	Safefree (cctx->sptr);
695		1016
696	Safefree (cctx);	1017	Safefree (cctx);
697	}	1018	}
698		1019
		1020	/* wether this cctx should be destructed */
		1021	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1022
699	static coro_cctx *	1023	static coro_cctx *
700	cctx_get (pTHX)	1024	cctx_get (pTHX)
701	{	1025	{
702	while (cctx_first)	1026	while (expect_true (cctx_first))
703	{	1027	{
704	coro_cctx *cctx = cctx_first;	1028	coro_cctx *cctx = cctx_first;
705	cctx_first = cctx->next;	1029	cctx_first = cctx->next;
706	--cctx_idle;	1030	--cctx_idle;
707		1031
708	if (cctx->ssize >= coro_stacksize)	1032	if (expect_true (!CCTX_EXPIRED (cctx)))
709	return cctx;	1033	return cctx;
710		1034
711	cctx_destroy (cctx);	1035	cctx_destroy (cctx);
712	}	1036	}
713		1037
714	PL_op = PL_op->op_next;
715	return cctx_new ();	1038	return cctx_new ();
716	}	1039	}
717		1040
718	static void	1041	static void
719	cctx_put (coro_cctx *cctx)	1042	cctx_put (coro_cctx *cctx)
720	{	1043	{
721	/* free another cctx if overlimit */	1044	/* free another cctx if overlimit */
722	if (cctx_idle >= MAX_IDLE_CCTX)	1045	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
723	{	1046	{
724	coro_cctx *first = cctx_first;	1047	coro_cctx *first = cctx_first;
725	cctx_first = first->next;	1048	cctx_first = first->next;
726	--cctx_idle;	1049	--cctx_idle;
727		1050
728	assert (!first->inuse);
729	cctx_destroy (first);	1051	cctx_destroy (first);
730	}	1052	}
731		1053
732	++cctx_idle;	1054	++cctx_idle;
733	cctx->next = cctx_first;	1055	cctx->next = cctx_first;
734	cctx_first = cctx;	1056	cctx_first = cctx;
735	}	1057	}
736		1058
737	/** coroutine switching *****************************************************/	1059	/** coroutine switching *****************************************************/
738		1060
739	/* 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 */
740	static void NOINLINE	1087	static void NOINLINE
741	transfer (pTHX_ struct coro *prev, struct coro *next)	1088	transfer (pTHX_ struct coro *prev, struct coro *next)
742	{	1089	{
743	dSTACKLEVEL;	1090	dSTACKLEVEL;
744		1091
745	/* sometimes transfer is only called to set idle_sp */	1092	/* sometimes transfer is only called to set idle_sp */
746	if (!next)	1093	if (expect_false (!next))
747	{	1094	{
748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1095	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
749	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 */
750	}	1097	}
751	else if (prev != next)	1098	else if (expect_true (prev != next))
752	{	1099	{
753	coro_cctx *prev__cctx;	1100	coro_cctx *prev__cctx;
754		1101
755	if (prev->flags & CF_NEW)	1102	if (expect_false (prev->flags & CF_NEW))
756	{	1103	{
757	/* create a new empty context */	1104	/* create a new empty context */
758	Newz (0, prev->cctx, 1, coro_cctx);	1105	Newz (0, prev->cctx, 1, coro_cctx);
759	prev->cctx->inuse = 1;
760	prev->flags &= ~CF_NEW;	1106	prev->flags &= ~CF_NEW;
761	prev->flags |= CF_RUNNING;	1107	prev->flags |= CF_RUNNING;
762	}	1108	}
763		1109
764	/*TODO: must not croak here */
765	if (!prev->flags & CF_RUNNING)
766	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
767
768	if (next->flags & CF_RUNNING)
769	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
770
771	if (next->flags & CF_DESTROYED)
772	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
773
774	prev->flags &= ~CF_RUNNING;	1110	prev->flags &= ~CF_RUNNING;
775	next->flags |= CF_RUNNING;	1111	next->flags |= CF_RUNNING;
776		1112
777	LOCK;	1113	LOCK;
778		1114
779	if (next->flags & CF_NEW)	1115	if (expect_false (next->flags & CF_NEW))
780	{	1116	{
781	/* need to start coroutine */	1117	/* need to start coroutine */
782	next->flags &= ~CF_NEW;	1118	next->flags &= ~CF_NEW;
783	/* first get rid of the old state */	1119	/* first get rid of the old state */
784	save_perl (aTHX_ prev);	1120	save_perl (aTHX_ prev);
785	/* setup coroutine call */	1121	/* setup coroutine call */
786	setup_coro (aTHX_ next);	1122	coro_setup (aTHX_ next);
787	/* need a new stack */
788	assert (!next->cctx);
789	}	1123	}
790	else	1124	else
791	{	1125	{
792	/* coroutine already started */	1126	/* coroutine already started */
793	save_perl (aTHX_ prev);	1127	save_perl (aTHX_ prev);
…		…
795	}	1129	}
796		1130
797	prev__cctx = prev->cctx;	1131	prev__cctx = prev->cctx;
798		1132
799	/* possibly "free" the cctx */	1133	/* possibly "free" the cctx */
800	if (prev__cctx->idle_sp == STACKLEVEL)	1134	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
801	{	1135	{
802	/* 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 */
803	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));
804		1138
805	prev->cctx = 0;	1139	prev->cctx = 0;
806		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
807	cctx_put (prev__cctx);	1147	cctx_put (prev__cctx);
808	prev__cctx->inuse = 0;
809	}	1148	}
810		1149
		1150	++next->usecount;
		1151
811	if (!next->cctx)	1152	if (expect_true (!next->cctx))
812	{
813	next->cctx = cctx_get (aTHX);	1153	next->cctx = cctx_get (aTHX);
814	assert (!next->cctx->inuse);
815	next->cctx->inuse = 1;
816	}
817		1154
818	if (prev__cctx != next->cctx)	1155	if (expect_false (prev__cctx != next->cctx))
819	{	1156	{
820	prev__cctx->top_env = PL_top_env;	1157	prev__cctx->top_env = PL_top_env;
821	PL_top_env = next->cctx->top_env;	1158	PL_top_env = next->cctx->top_env;
822	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1159	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
823	}	1160	}
824		1161
825	free_coro_mortal (aTHX);	1162	free_coro_mortal (aTHX);
826	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	}
827	}	1177	}
828	}	1178	}
829		1179
830	struct transfer_args	1180	struct transfer_args
831	{	1181	{
832	struct coro *prev, *next;	1182	struct coro *prev, *next;
833	};	1183	};
834		1184
835	#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)
836		1187
837	/** high level stuff ********************************************************/	1188	/** high level stuff ********************************************************/
838		1189
839	static int	1190	static int
840	coro_state_destroy (pTHX_ struct coro *coro)	1191	coro_state_destroy (pTHX_ struct coro *coro)
…		…
857		1208
858	if (coro->mainstack && coro->mainstack != main_mainstack)	1209	if (coro->mainstack && coro->mainstack != main_mainstack)
859	{	1210	{
860	struct coro temp;	1211	struct coro temp;
861		1212
862	assert (!(coro->flags & CF_RUNNING));
863
864	Zero (&temp, 1, struct coro);
865	temp.save = CORO_SAVE_ALL;
866
867	if (coro->flags & CF_RUNNING)	1213	if (coro->flags & CF_RUNNING)
868	croak ("FATAL: tried to destroy currently running coroutine");	1214	croak ("FATAL: tried to destroy currently running coroutine");
869		1215
870	save_perl (aTHX_ &temp);	1216	save_perl (aTHX_ &temp);
871	load_perl (aTHX_ coro);	1217	load_perl (aTHX_ coro);
872		1218
873	coro_destroy_stacks (aTHX);	1219	coro_destroy (aTHX_ coro);
874		1220
875	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1221	load_perl (aTHX_ &temp);
876		1222
877	coro->mainstack = 0;	1223	coro->slot = 0;
878	}	1224	}
879		1225
880	cctx_destroy (coro->cctx);	1226	cctx_destroy (coro->cctx);
881	SvREFCNT_dec (coro->args);	1227	SvREFCNT_dec (coro->args);
882		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
883	return 1;	1233	return 1;
884	}	1234	}
885		1235
886	static int	1236	static int
887	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1237	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
888	{	1238	{
889	struct coro *coro = (struct coro *)mg->mg_ptr;	1239	struct coro *coro = (struct coro *)mg->mg_ptr;
890	mg->mg_ptr = 0;	1240	mg->mg_ptr = 0;
		1241
		1242	coro->hv = 0;
891		1243
892	if (--coro->refcnt < 0)	1244	if (--coro->refcnt < 0)
893	{	1245	{
894	coro_state_destroy (aTHX_ coro);	1246	coro_state_destroy (aTHX_ coro);
895	Safefree (coro);	1247	Safefree (coro);
…		…
917	#else	1269	#else
918	# define MGf_DUP 0	1270	# define MGf_DUP 0
919	#endif	1271	#endif
920	};	1272	};
921		1273
922	static struct coro *
923	SvSTATE_ (pTHX_ SV *coro)
924	{
925	HV *stash;
926	MAGIC *mg;
927
928	if (SvROK (coro))
929	coro = SvRV (coro);
930
931	stash = SvSTASH (coro);
932	if (stash != coro_stash && stash != coro_state_stash)
933	{
934	/* very slow, but rare, check */
935	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
936	croak ("Coro::State object required");
937	}
938
939	mg = CORO_MAGIC (coro);
940	return (struct coro *)mg->mg_ptr;
941	}
942
943	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
944
945	static void	1274	static void
946	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)
947	{	1276	{
948	ta->prev = SvSTATE (prev_sv);	1277	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1278	ta->next = SvSTATE (next_sv);
		1279	TRANSFER_CHECK (*ta);
950	}	1280	}
951		1281
952	static void	1282	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1283	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1284	{
955	dTHX;	1285	dTHX;
956	struct transfer_args ta;	1286	struct transfer_args ta;
957		1287
958	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1288	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959	TRANSFER (ta);	1289	TRANSFER (ta);
960	}
961
962	static int
963	api_save (SV *coro_sv, int new_save)
964	{
965	dTHX;
966	struct coro *coro = SvSTATE (coro_sv);
967	int old_save = coro->save;
968
969	if (new_save >= 0)
970	coro->save = new_save;
971
972	return old_save;
973	}	1290	}
974		1291
975	/** Coro ********************************************************************/	1292	/** Coro ********************************************************************/
976		1293
977	static void	1294	static void
…		…
1036	{	1353	{
1037	LOCK;	1354	LOCK;
1038	next_sv = coro_deq (aTHX_ PRIO_MIN);	1355	next_sv = coro_deq (aTHX_ PRIO_MIN);
1039		1356
1040	/* nothing to schedule: call the idle handler */	1357	/* nothing to schedule: call the idle handler */
1041	if (!next_sv)	1358	if (expect_false (!next_sv))
1042	{	1359	{
1043	dSP;	1360	dSP;
1044	UNLOCK;	1361	UNLOCK;
1045		1362
1046	ENTER;	1363	ENTER;
…		…
1056	}	1373	}
1057		1374
1058	ta->next = SvSTATE (next_sv);	1375	ta->next = SvSTATE (next_sv);
1059		1376
1060	/* cannot transfer to destroyed coros, skip and look for next */	1377	/* cannot transfer to destroyed coros, skip and look for next */
1061	if (ta->next->flags & CF_DESTROYED)	1378	if (expect_false (ta->next->flags & CF_DESTROYED))
1062	{	1379	{
1063	UNLOCK;	1380	UNLOCK;
1064	SvREFCNT_dec (next_sv);	1381	SvREFCNT_dec (next_sv);
1065	/* coro_nready is already taken care of by destroy */	1382	/* coro_nready is already taken care of by destroy */
1066	continue;	1383	continue;
…		…
1071	break;	1388	break;
1072	}	1389	}
1073		1390
1074	/* free this only after the transfer */	1391	/* free this only after the transfer */
1075	prev_sv = SvRV (coro_current);	1392	prev_sv = SvRV (coro_current);
1076	SvRV_set (coro_current, next_sv);
1077	ta->prev = SvSTATE (prev_sv);	1393	ta->prev = SvSTATE (prev_sv);
1078		1394	TRANSFER_CHECK (*ta);
1079	assert (ta->next->flags & CF_READY);	1395	assert (ta->next->flags & CF_READY);
1080	ta->next->flags &= ~CF_READY;	1396	ta->next->flags &= ~CF_READY;
		1397	SvRV_set (coro_current, next_sv);
1081		1398
1082	LOCK;	1399	LOCK;
1083	free_coro_mortal (aTHX);	1400	free_coro_mortal (aTHX);
1084	coro_mortal = prev_sv;	1401	coro_mortal = prev_sv;
1085	UNLOCK;	1402	UNLOCK;
…		…
1122	dTHX;	1439	dTHX;
1123	struct transfer_args ta;	1440	struct transfer_args ta;
1124		1441
1125	prepare_cede (aTHX_ &ta);	1442	prepare_cede (aTHX_ &ta);
1126		1443
1127	if (ta.prev != ta.next)	1444	if (expect_true (ta.prev != ta.next))
1128	{	1445	{
1129	TRANSFER (ta);	1446	TRANSFER (ta);
1130	return 1;	1447	return 1;
1131	}	1448	}
1132	else	1449	else
…		…
1146	}	1463	}
1147	else	1464	else
1148	return 0;	1465	return 0;
1149	}	1466	}
1150		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
1151	MODULE = Coro::State PACKAGE = Coro::State	1494	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1152		1495
1153	PROTOTYPES: DISABLE	1496	PROTOTYPES: DISABLE
1154		1497
1155	BOOT:	1498	BOOT:
1156	{	1499	{
1157	#ifdef USE_ITHREADS	1500	#ifdef USE_ITHREADS
1158	MUTEX_INIT (&coro_mutex);	1501	MUTEX_INIT (&coro_mutex);
1159	#endif	1502	#endif
1160	BOOT_PAGESIZE;	1503	BOOT_PAGESIZE;
1161		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
1162	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1515	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1163		1516
		1517	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1518	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1164	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1165	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1166	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1167	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1168	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1169		1521
1170	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;
1171		1527
1172	coroapi.ver = CORO_API_VERSION;	1528	coroapi.ver = CORO_API_VERSION;
1173	coroapi.transfer = api_transfer;	1529	coroapi.transfer = api_transfer;
1174		1530
1175	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1531	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1182	struct coro *coro;	1538	struct coro *coro;
1183	HV *hv;	1539	HV *hv;
1184	int i;	1540	int i;
1185		1541
1186	Newz (0, coro, 1, struct coro);	1542	Newz (0, coro, 1, struct coro);
1187	coro->args = newAV ();	1543	coro->args = newAV ();
1188	coro->save = CORO_SAVE_ALL;
1189	coro->flags = CF_NEW;	1544	coro->flags = CF_NEW;
1190		1545
		1546	if (coro_first) coro_first->prev = coro;
		1547	coro->next = coro_first;
		1548	coro_first = coro;
		1549
1191	hv = newHV ();	1550	coro->hv = hv = newHV ();
1192	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;
1193	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1552	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1194		1553
		1554	av_extend (coro->args, items - 1);
1195	for (i = 1; i < items; i++)	1555	for (i = 1; i < items; i++)
1196	av_push (coro->args, newSVsv (ST (i)));	1556	av_push (coro->args, newSVsv (ST (i)));
1197	}	1557	}
1198	OUTPUT:	1558	OUTPUT:
1199	RETVAL	1559	RETVAL
1200		1560
1201	int	1561	# these not obviously related functions are all rolled into the same xs
1202	save (SV *coro, int new_save = -1)	1562	# function to increase chances that they all will call transfer with the same
1203	CODE:	1563	# stack offset
1204	RETVAL = api_save (coro, new_save);
1205	OUTPUT:
1206	RETVAL
1207
1208	void	1564	void
1209	_set_stacklevel (...)	1565	_set_stacklevel (...)
1210	ALIAS:	1566	ALIAS:
1211	Coro::State::transfer = 1	1567	Coro::State::transfer = 1
1212	Coro::schedule = 2	1568	Coro::schedule = 2
…		…
1246	}	1602	}
1247		1603
1248	BARRIER;	1604	BARRIER;
1249	TRANSFER (ta);	1605	TRANSFER (ta);
1250		1606
1251	if (GIMME_V != G_VOID && ta.next != ta.prev)	1607	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1252	XSRETURN_YES;	1608	XSRETURN_YES;
1253	}	1609	}
1254		1610
1255	bool	1611	bool
1256	_destroy (SV *coro_sv)	1612	_destroy (SV *coro_sv)
…		…
1287	CODE:	1643	CODE:
1288	RETVAL = cctx_idle;	1644	RETVAL = cctx_idle;
1289	OUTPUT:	1645	OUTPUT:
1290	RETVAL	1646	RETVAL
1291		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
1292	MODULE = Coro::State PACKAGE = Coro	1747	MODULE = Coro::State PACKAGE = Coro
1293		1748
1294	BOOT:	1749	BOOT:
1295	{	1750	{
1296	int i;	1751	int i;
1297		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
1298	coro_stash = gv_stashpv ("Coro", TRUE);	1760	coro_stash = gv_stashpv ("Coro", TRUE);
1299		1761
1300	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1762	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1301	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1763	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1302	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1764	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1303	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1765	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1304	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1766	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1305	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1767	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1306		1768
1307	coro_current = get_sv ("Coro::current", FALSE);
1308	SvREADONLY_on (coro_current);
1309
1310	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1769	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1311	coro_ready[i] = newAV ();	1770	coro_ready[i] = newAV ();
1312		1771
1313	{	1772	{
1314	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 */
1315		1775
1316	coroapi.schedule = api_schedule;	1776	coroapi.schedule = api_schedule;
1317	coroapi.save = api_save;
1318	coroapi.cede = api_cede;	1777	coroapi.cede = api_cede;
1319	coroapi.cede_notself = api_cede_notself;	1778	coroapi.cede_notself = api_cede_notself;
1320	coroapi.ready = api_ready;	1779	coroapi.ready = api_ready;
1321	coroapi.is_ready = api_is_ready;	1780	coroapi.is_ready = api_is_ready;
1322	coroapi.nready = &coro_nready;	1781	coroapi.nready = &coro_nready;
…		…
1363	CODE:	1822	CODE:
1364	RETVAL = boolSV (api_ready (self));	1823	RETVAL = boolSV (api_ready (self));
1365	OUTPUT:	1824	OUTPUT:
1366	RETVAL	1825	RETVAL
1367		1826
1368	SV *
1369	is_ready (SV *self)
1370	PROTOTYPE: $
1371	CODE:
1372	RETVAL = boolSV (api_is_ready (self));
1373	OUTPUT:
1374	RETVAL
1375
1376	int	1827	int
1377	nready (...)	1828	nready (...)
1378	PROTOTYPE:	1829	PROTOTYPE:
1379	CODE:	1830	CODE:
1380	RETVAL = coro_nready;	1831	RETVAL = coro_nready;
1381	OUTPUT:	1832	OUTPUT:
1382	RETVAL	1833	RETVAL
1383		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
1384	MODULE = Coro::State PACKAGE = Coro::AIO	1906	MODULE = Coro::State PACKAGE = Coro::AIO
1385		1907
1386	SV *	1908	SV *
1387	_get_state ()	1909	_get_state ()
1388	CODE:	1910	CODE:

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