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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 1.243 by root, Sat Aug 30 03:07:46 2008 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
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
88	/* prefer perl internal functions over our own? */	111	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	112	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	113	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	114	#endif
92		115
93	/* The next macro should declare a variable stacklevel that contains and approximation	116	/* 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	117	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
98		120
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		122
101	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	127	#else
105	# define attribute(x)	128	# define attribute(x)
106	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
107	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
108		135
109	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
110		137
111	#include "CoroAPI.h"	138	#include "CoroAPI.h"
112		139
…		…
129	};	156	};
130		157
131	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
		161	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
		164
		165	static GV *irsgv; /* $/ */
		166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
136		178
137	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		189	};
139		190
140	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	192	typedef struct coro_cctx {
142	struct coro_cctx *next;	193	struct coro_cctx *next;
143		194
…		…
152	coro_context cctx;	203	coro_context cctx;
153		204
154	#if CORO_USE_VALGRIND	205	#if CORO_USE_VALGRIND
155	int valgrind_id;	206	int valgrind_id;
156	#endif	207	#endif
157	char inuse, mapped;	208	unsigned char flags;
158	} coro_cctx;	209	} coro_cctx;
159		210
160	enum {	211	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	216	};
166		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		230
167	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
168	struct coro {	232	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	234	coro_cctx *cctx;
171		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
172	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
177		244
178	/* optionally saved, might be zero */	245	/* statistics */
179	AV *defav; /* @_ */	246	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		247
190	/* coro process data */	248	/* coro process data */
191	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro *next, *prev;
192	};	257	};
193		258
194	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
196		261
…		…
203	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
204	#define PRIO_MIN -4	269	#define PRIO_MIN -4
205		270
206	/* for Coro.pm */	271	/* for Coro.pm */
207	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	275	static int coro_nready;
		276	static struct coro *coro_first;
210		277
211	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
		290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
212		309
213	static AV *	310	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
215	{	312	{
216	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
217	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
218		315
219	newpadlist = newAV ();	316	newpadlist = newAV ();
220	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
221	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
223	#else	320	#else
224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
225	#endif	322	#endif
226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
264		361
265	/* casting is fun. */	362	/* casting is fun. */
266	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
268		365
269	SvREFCNT_dec (av);
270
271	return 0;	366	return 0;
272	}	367	}
273		368
274	#define PERL_MAGIC_coro PERL_MAGIC_ext	369	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		370	#define CORO_MAGIC_type_state PERL_MAGIC_ext
275		371
276	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	372	static MGVTBL coro_cv_vtbl = {
		373	0, 0, 0, 0,
		374	coro_cv_free
		375	};
277		376
278	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
279	SvMAGIC (cv) \	378	SvMAGIC (sv) \
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
281	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
283	: 0	382	: 0
		383
		384	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		385	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		386
		387	static struct coro *
		388	SvSTATE_ (pTHX_ SV *coro)
		389	{
		390	HV *stash;
		391	MAGIC *mg;
		392
		393	if (SvROK (coro))
		394	coro = SvRV (coro);
		395
		396	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		397	croak ("Coro::State object required");
		398
		399	stash = SvSTASH (coro);
		400	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		401	{
		402	/* very slow, but rare, check */
		403	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		404	croak ("Coro::State object required");
		405	}
		406
		407	mg = CORO_MAGIC_state (coro);
		408	return (struct coro *)mg->mg_ptr;
		409	}
		410
		411	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
284		412
285	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
286	static void	414	static void
287	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
288	{	416	{
289	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
290	AV *av;	418	AV *av;
291		419
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	422	else
295	{	423	{
296	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
306	}	434	}
307		435
308	static void	436	static void
309	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
310	{	438	{
311	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
312	AV *av;	440	AV *av;
313		441
314	if (!mg)	442	if (expect_false (!mg))
315	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();
320	}
321		444
322	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
323		446
324	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
326		449
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	451	}
329		452
330	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
331
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		454
337	static void	455	static void
338	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
339	{	457	{
		458	perl_slots *slot = c->slot;
		459	c->slot = 0;
		460
		461	PL_mainstack = c->mainstack;
		462
		463	GvSV (PL_defgv) = slot->defsv;
		464	GvAV (PL_defgv) = slot->defav;
		465	GvSV (PL_errgv) = slot->errsv;
		466	GvSV (irsgv) = slot->irsgv;
		467
340	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	469	# include "state.h"
342	#undef VAR	470	#undef VAR
343
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
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		471
364	{	472	{
365	dSP;	473	dSP;
		474
366	CV *cv;	475	CV *cv;
367		476
368	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
370	{	479	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
374	}	483	}
375		484
376	PUTBACK;	485	PUTBACK;
377	}	486	}
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	}	487	}
380		488
381	static void	489	static void
382	save_perl (pTHX_ Coro__State c)	490	save_perl (pTHX_ Coro__State c)
383	{	491	{
384	assert (!PL_comppad || AvARRAY (PL_comppad));//D
385	{	492	{
386	dSP;	493	dSP;
387	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	496	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	498	/*
392	* the worst thing you can imagine happens first - we have to save	499	* the worst thing you can imagine happens first - we have to save
393	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
394	*/	501	*/
395		502
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
399	for (;;)	505	for (;;)
400	{	506	{
401	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
402	{	508	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
404		510
405	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406	{	512	{
407	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
408		514
409	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
410	{	516	{
411	EXTEND (SP, 3);	517	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
415		521
416	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
417	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
418	}	524	}
419	}	525	}
420	}	526	}
421		527
422	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	529	break;
424		530
425	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
428	}	534	}
429		535
430	PUTBACK;	536	PUTBACK;
431	}	537	}
432		538
433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	539	/* allocate some space on the context stack for our purposes */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	543	if (SLOT_COUNT >= 3) CXINC;
		544	{
		545	int i;
		546	for (i = 3; i < SLOT_COUNT; ++i)
		547	CXINC;
		548	}
		549	cxstack_ix -= SLOT_COUNT; /* undo allocation */
438		550
		551	c->mainstack = PL_mainstack;
		552
		553	{
		554	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		555
		556	slot->defav = GvAV (PL_defgv);
		557	slot->defsv = DEFSV;
		558	slot->errsv = ERRSV;
		559	slot->irsgv = GvSV (irsgv);
		560
439	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	562	# include "state.h"
441	#undef VAR	563	#undef VAR
		564	}
442	}	565	}
443		566
444	/*	567	/*
445	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
451	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
452	#else	575	#else
453	static void	576	static void
454	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
455	{	578	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		583
461	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		587
465	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	591	PL_tmps_max = 32;
469		592
470	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
473		596
474	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
476	#endif	599	#endif
477		600
478	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
481		604
482	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	607	PL_savestack_max = 24;
485		608
486	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
487	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	612	PL_retstack_max = 4;
490	#endif	613	#endif
491	}	614	}
492	#endif	615	#endif
493		616
494	/*	617	/*
495	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
496	*/	619	*/
497	static void	620	static void
498	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
499	{	622	{
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)	623	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
519		625
520	while (PL_curstackinfo)	626	while (PL_curstackinfo)
521	{	627	{
…		…
531		637
532	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
533	Safefree (PL_markstack);	639	Safefree (PL_markstack);
534	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
535	Safefree (PL_savestack);	641	Safefree (PL_savestack);
536	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
537	Safefree (PL_retstack);	643	Safefree (PL_retstack);
538	#endif	644	#endif
539	}	645	}
540		646
		647	static size_t
		648	coro_rss (pTHX_ struct coro *coro)
		649	{
		650	size_t rss = sizeof (*coro);
		651
		652	if (coro->mainstack)
		653	{
		654	perl_slots tmp_slot;
		655	perl_slots *slot;
		656
		657	if (coro->flags & CF_RUNNING)
		658	{
		659	slot = &tmp_slot;
		660
		661	#define VAR(name,type) slot->name = PL_ ## name;
		662	# include "state.h"
		663	#undef VAR
		664	}
		665	else
		666	slot = coro->slot;
		667
		668	rss += sizeof (slot->curstackinfo);
		669	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		670	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		671	rss += slot->tmps_max * sizeof (SV *);
		672	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		673	rss += slot->scopestack_max * sizeof (I32);
		674	rss += slot->savestack_max * sizeof (ANY);
		675
		676	#if !PERL_VERSION_ATLEAST (5,10,0)
		677	rss += slot->retstack_max * sizeof (OP *);
		678	#endif
		679	}
		680
		681	return rss;
		682	}
		683
541	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
542		685
		686	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		687	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		688	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		689
		690	/* apparently < 5.8.8 */
		691	#ifndef MgPV_nolen_const
		692	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		693	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		694	(const char*)(mg)->mg_ptr)
		695	#endif
		696
		697	/*
		698	* This overrides the default magic get method of %SIG elements.
		699	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		700	* and instead of tryign to save and restore the hash elements, we just provide
		701	* readback here.
		702	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		703	* not expecting this to actually change the hook. This is a potential problem
		704	* when a schedule happens then, but we ignore this.
		705	*/
		706	static int
		707	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		708	{
		709	const char *s = MgPV_nolen_const (mg);
		710
		711	if (*s == '_')
		712	{
		713	SV **svp = 0;
		714
		715	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		716	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		717
		718	if (svp)
		719	{
		720	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		721	return 0;
		722	}
		723	}
		724
		725	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		726	}
		727
		728	static int
		729	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		730	{
		731	const char *s = MgPV_nolen_const (mg);
		732
		733	if (*s == '_')
		734	{
		735	SV **svp = 0;
		736
		737	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		738	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		739
		740	if (svp)
		741	{
		742	SV *old = *svp;
		743	*svp = 0;
		744	SvREFCNT_dec (old);
		745	return 0;
		746	}
		747	}
		748
		749	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		750	}
		751
		752	static int
		753	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		754	{
		755	const char *s = MgPV_nolen_const (mg);
		756
		757	if (*s == '_')
		758	{
		759	SV **svp = 0;
		760
		761	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		762	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		763
		764	if (svp)
		765	{
		766	SV *old = *svp;
		767	*svp = newSVsv (sv);
		768	SvREFCNT_dec (old);
		769	return 0;
		770	}
		771	}
		772
		773	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		774	}
		775
543	static void	776	static void
544	setup_coro (pTHX_ struct coro *coro)	777	coro_setup (pTHX_ struct coro *coro)
545	{	778	{
546	/*	779	/*
547	* emulate part of the perl startup here.	780	* emulate part of the perl startup here.
548	*/	781	*/
549	coro_init_stacks (aTHX);	782	coro_init_stacks (aTHX);
550		783
		784	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	785	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	786	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	787	PL_comppad = 0;
554	PL_curpm = 0;	788	PL_curpm = 0;
		789	PL_curpad = 0;
555	PL_localizing = 0;	790	PL_localizing = 0;
556	PL_dirty = 0;	791	PL_dirty = 0;
557	PL_restartop = 0;	792	PL_restartop = 0;
		793	#if PERL_VERSION_ATLEAST (5,10,0)
		794	PL_parser = 0;
		795	#endif
		796
		797	/* recreate the die/warn hooks */
		798	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		799	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		800
		801	GvSV (PL_defgv) = newSV (0);
		802	GvAV (PL_defgv) = coro->args; coro->args = 0;
		803	GvSV (PL_errgv) = newSV (0);
		804	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		805	PL_rs = newSVsv (GvSV (irsgv));
		806	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
558		807
559	{	808	{
560	dSP;	809	dSP;
561	LOGOP myop;	810	LOGOP myop;
562		811
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	812	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	813	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	814	myop.op_flags = OPf_WANT_VOID;
569		815
570	PUSHMARK (SP);	816	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	817	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	818	PUTBACK;
573	PL_op = (OP *)&myop;	819	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	821	SPAGAIN;
576	}	822	}
577		823
578	ENTER; /* necessary e.g. for dounwind */	824	/* this newly created coroutine might be run on an existing cctx which most
		825	* likely was suspended in set_stacklevel, called from entersub.
		826	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		827	* so we ENTER here for symmetry
		828	*/
		829	ENTER;
		830	}
		831
		832	static void
		833	coro_destroy (pTHX_ struct coro *coro)
		834	{
		835	if (!IN_DESTRUCT)
		836	{
		837	/* restore all saved variables and stuff */
		838	LEAVE_SCOPE (0);
		839	assert (PL_tmps_floor == -1);
		840
		841	/* free all temporaries */
		842	FREETMPS;
		843	assert (PL_tmps_ix == -1);
		844
		845	/* unwind all extra stacks */
		846	POPSTACK_TO (PL_mainstack);
		847
		848	/* unwind main stack */
		849	dounwind (-1);
		850	}
		851
		852	SvREFCNT_dec (GvSV (PL_defgv));
		853	SvREFCNT_dec (GvAV (PL_defgv));
		854	SvREFCNT_dec (GvSV (PL_errgv));
		855	SvREFCNT_dec (PL_defoutgv);
		856	SvREFCNT_dec (PL_rs);
		857	SvREFCNT_dec (GvSV (irsgv));
		858
		859	SvREFCNT_dec (PL_diehook);
		860	SvREFCNT_dec (PL_warnhook);
		861
		862	SvREFCNT_dec (coro->saved_deffh);
		863	SvREFCNT_dec (coro->throw);
		864
		865	coro_destroy_stacks (aTHX);
579	}	866	}
580		867
581	static void	868	static void
582	free_coro_mortal (pTHX)	869	free_coro_mortal (pTHX)
583	{	870	{
584	if (coro_mortal)	871	if (expect_true (coro_mortal))
585	{	872	{
586	SvREFCNT_dec (coro_mortal);	873	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	874	coro_mortal = 0;
588	}	875	}
589	}	876	}
590		877
		878	static int
		879	runops_trace (pTHX)
		880	{
		881	COP *oldcop = 0;
		882	int oldcxix = -2;
		883	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		884	coro_cctx *cctx = coro->cctx;
		885
		886	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		887	{
		888	PERL_ASYNC_CHECK ();
		889
		890	if (cctx->flags & CC_TRACE_ALL)
		891	{
		892	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		893	{
		894	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		895	SV **bot, **top;
		896	AV *av = newAV (); /* return values */
		897	SV **cb;
		898	dSP;
		899
		900	GV *gv = CvGV (cx->blk_sub.cv);
		901	SV *fullname = sv_2mortal (newSV (0));
		902	if (isGV (gv))
		903	gv_efullname3 (fullname, gv, 0);
		904
		905	bot = PL_stack_base + cx->blk_oldsp + 1;
		906	top = cx->blk_gimme == G_ARRAY ? SP + 1
		907	: cx->blk_gimme == G_SCALAR ? bot + 1
		908	: bot;
		909
		910	av_extend (av, top - bot);
		911	while (bot < top)
		912	av_push (av, SvREFCNT_inc (*bot++));
		913
		914	PL_runops = RUNOPS_DEFAULT;
		915	ENTER;
		916	SAVETMPS;
		917	EXTEND (SP, 3);
		918	PUSHMARK (SP);
		919	PUSHs (&PL_sv_no);
		920	PUSHs (fullname);
		921	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		922	PUTBACK;
		923	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		924	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		925	SPAGAIN;
		926	FREETMPS;
		927	LEAVE;
		928	PL_runops = runops_trace;
		929	}
		930
		931	if (oldcop != PL_curcop)
		932	{
		933	oldcop = PL_curcop;
		934
		935	if (PL_curcop != &PL_compiling)
		936	{
		937	SV **cb;
		938
		939	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		940	{
		941	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		942
		943	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		944	{
		945	runops_proc_t old_runops = PL_runops;
		946	dSP;
		947	GV *gv = CvGV (cx->blk_sub.cv);
		948	SV *fullname = sv_2mortal (newSV (0));
		949
		950	if (isGV (gv))
		951	gv_efullname3 (fullname, gv, 0);
		952
		953	PL_runops = RUNOPS_DEFAULT;
		954	ENTER;
		955	SAVETMPS;
		956	EXTEND (SP, 3);
		957	PUSHMARK (SP);
		958	PUSHs (&PL_sv_yes);
		959	PUSHs (fullname);
		960	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		961	PUTBACK;
		962	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		963	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		964	SPAGAIN;
		965	FREETMPS;
		966	LEAVE;
		967	PL_runops = runops_trace;
		968	}
		969
		970	oldcxix = cxstack_ix;
		971	}
		972
		973	if (cctx->flags & CC_TRACE_LINE)
		974	{
		975	dSP;
		976
		977	PL_runops = RUNOPS_DEFAULT;
		978	ENTER;
		979	SAVETMPS;
		980	EXTEND (SP, 3);
		981	PL_runops = RUNOPS_DEFAULT;
		982	PUSHMARK (SP);
		983	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		984	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		985	PUTBACK;
		986	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		987	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		988	SPAGAIN;
		989	FREETMPS;
		990	LEAVE;
		991	PL_runops = runops_trace;
		992	}
		993	}
		994	}
		995	}
		996	}
		997
		998	TAINT_NOT;
		999	return 0;
		1000	}
		1001
591	/* inject a fake call to Coro::State::_cctx_init into the execution */	1002	/* inject a fake call to Coro::State::_cctx_init into the execution */
		1003	/* _cctx_init should be careful, as it could be called at almost any time */
		1004	/* during execution of a perl program */
592	static void NOINLINE	1005	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	1006	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	1007	{
595	dSP;	1008	dSP;
596	LOGOP myop;	1009	LOGOP myop;
		1010
		1011	PL_top_env = &PL_start_env;
		1012
		1013	if (cctx->flags & CC_TRACE)
		1014	PL_runops = runops_trace;
597		1015
598	Zero (&myop, 1, LOGOP);	1016	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	1017	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1018	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601		1019
…		…
607	PL_op = (OP *)&myop;	1025	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1026	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	1027	SPAGAIN;
610	}	1028	}
611		1029
		1030	/*
		1031	* this is a _very_ stripped down perl interpreter ;)
		1032	*/
612	static void	1033	static void
613	coro_run (void *arg)	1034	cctx_run (void *arg)
614	{	1035	{
615	dTHX;	1036	dTHX;
616		1037
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	1038	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	1039	UNLOCK;
619		1040
620	/*	1041	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	1042	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		1043
625	/* inject call to cctx_init */	1044	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	1045	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		1046
628	/* somebody will hit me for both perl_run and PL_restartop */	1047	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	1048	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	1049	perl_run (PL_curinterp);
631		1050
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1051	/*
633	abort ();	1052	* If perl-run returns we assume exit() was being called or the coro
		1053	* fell off the end, which seems to be the only valid (non-bug)
		1054	* reason for perl_run to return. We try to exit by jumping to the
		1055	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1056	* coroutine as Coro has no such concept
		1057	*/
		1058	PL_top_env = main_top_env;
		1059	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	1060	}
635		1061
636	static coro_cctx *	1062	static coro_cctx *
637	cctx_new ()	1063	cctx_new ()
638	{	1064	{
…		…
643	++cctx_count;	1069	++cctx_count;
644		1070
645	Newz (0, cctx, 1, coro_cctx);	1071	Newz (0, cctx, 1, coro_cctx);
646		1072
647	#if HAVE_MMAP	1073	#if HAVE_MMAP
648
649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1074	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650	/* mmap supposedly does allocate-on-write for us */	1075	/* 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);	1076	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652		1077
653	if (cctx->sptr != (void *)-1)	1078	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	1080	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1081	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	1082	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1083	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1084	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	1085	cctx->flags |= CC_MAPPED;
661	}	1086	}
662	else	1087	else
663	#endif	1088	#endif
664	{	1089	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	1090	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	1099	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	1100	stack_size = cctx->ssize;
676	}	1101	}
677		1102
678	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1103	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1104	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680		1105
681	return cctx;	1106	return cctx;
682	}	1107	}
683		1108
684	static void	1109	static void
…		…
692	#if CORO_USE_VALGRIND	1117	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1118	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1119	#endif
695		1120
696	#if HAVE_MMAP	1121	#if HAVE_MMAP
697	if (cctx->mapped)	1122	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1123	munmap (cctx->sptr, cctx->ssize);
699	else	1124	else
700	#endif	1125	#endif
701	Safefree (cctx->sptr);	1126	Safefree (cctx->sptr);
702		1127
703	Safefree (cctx);	1128	Safefree (cctx);
704	}	1129	}
705		1130
		1131	/* wether this cctx should be destructed */
		1132	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1133
706	static coro_cctx *	1134	static coro_cctx *
707	cctx_get (pTHX)	1135	cctx_get (pTHX)
708	{	1136	{
709	while (cctx_first)	1137	while (expect_true (cctx_first))
710	{	1138	{
711	coro_cctx *cctx = cctx_first;	1139	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1140	cctx_first = cctx->next;
713	--cctx_idle;	1141	--cctx_idle;
714		1142
715	if (cctx->ssize >= coro_stacksize)	1143	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1144	return cctx;
717		1145
718	cctx_destroy (cctx);	1146	cctx_destroy (cctx);
719	}	1147	}
720		1148
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1149	return cctx_new ();
723	}	1150	}
724		1151
725	static void	1152	static void
726	cctx_put (coro_cctx *cctx)	1153	cctx_put (coro_cctx *cctx)
727	{	1154	{
728	/* free another cctx if overlimit */	1155	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1156	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1157	{
731	coro_cctx *first = cctx_first;	1158	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1159	cctx_first = first->next;
733	--cctx_idle;	1160	--cctx_idle;
734		1161
735	assert (!first->inuse);
736	cctx_destroy (first);	1162	cctx_destroy (first);
737	}	1163	}
738		1164
739	++cctx_idle;	1165	++cctx_idle;
740	cctx->next = cctx_first;	1166	cctx->next = cctx_first;
741	cctx_first = cctx;	1167	cctx_first = cctx;
742	}	1168	}
743		1169
744	/** coroutine switching *****************************************************/	1170	/** coroutine switching *****************************************************/
745		1171
746	/* never call directly, always through the coro_state_transfer global variable */	1172	static void
		1173	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1174	{
		1175	if (expect_true (prev != next))
		1176	{
		1177	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1178	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1179
		1180	if (expect_false (next->flags & CF_RUNNING))
		1181	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1182
		1183	if (expect_false (next->flags & CF_DESTROYED))
		1184	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1185
		1186	#if !PERL_VERSION_ATLEAST (5,10,0)
		1187	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1188	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1189	#endif
		1190	}
		1191	}
		1192
		1193	/* always use the TRANSFER macro */
747	static void NOINLINE	1194	static void NOINLINE
748	transfer (pTHX_ struct coro *prev, struct coro *next)	1195	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
749	{	1196	{
750	dSTACKLEVEL;	1197	dSTACKLEVEL;
		1198	static volatile int has_throw;
751		1199
752	/* sometimes transfer is only called to set idle_sp */	1200	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1201	if (expect_false (!next))
754	{	1202	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1203	((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 */	1204	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757	}	1205	}
758	else if (prev != next)	1206	else if (expect_true (prev != next))
759	{	1207	{
760	coro_cctx *prev__cctx;	1208	coro_cctx *prev__cctx;
761		1209
762	if (prev->flags & CF_NEW)	1210	if (expect_false (prev->flags & CF_NEW))
763	{	1211	{
764	/* create a new empty context */	1212	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1213	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1214	prev->flags &= ~CF_NEW;
768	prev->flags |= CF_RUNNING;	1215	prev->flags |= CF_RUNNING;
769	}	1216	}
770		1217
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;	1218	prev->flags &= ~CF_RUNNING;
782	next->flags |= CF_RUNNING;	1219	next->flags |= CF_RUNNING;
783		1220
784	LOCK;	1221	LOCK;
785		1222
		1223	/* first get rid of the old state */
		1224	save_perl (aTHX_ prev);
		1225
786	if (next->flags & CF_NEW)	1226	if (expect_false (next->flags & CF_NEW))
787	{	1227	{
788	/* need to start coroutine */	1228	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1229	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */
791	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1230	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1231	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1232	}
797	else	1233	else
798	{
799	/* coroutine already started */
800	save_perl (aTHX_ prev);
801	load_perl (aTHX_ next);	1234	load_perl (aTHX_ next);
802	}
803		1235
804	prev__cctx = prev->cctx;	1236	prev__cctx = prev->cctx;
805		1237
806	/* possibly "free" the cctx */	1238	/* possibly "free" the cctx */
		1239	if (expect_true (
807	if (prev__cctx->idle_sp == STACKLEVEL)	1240	prev__cctx->idle_sp == STACKLEVEL
		1241	&& !(prev__cctx->flags & CC_TRACE)
		1242	&& !force_cctx
		1243	))
808	{	1244	{
809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1245	/* 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));	1246	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811		1247
812	prev->cctx = 0;	1248	prev->cctx = 0;
813		1249
		1250	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1251	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1252	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1253	if (!next->cctx)
		1254	next->cctx = cctx_get (aTHX);
		1255
814	cctx_put (prev__cctx);	1256	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1257	}
817		1258
		1259	++next->usecount;
		1260
818	if (!next->cctx)	1261	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1262	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1263
		1264	has_throw = !!next->throw;
		1265
825	if (prev__cctx != next->cctx)	1266	if (expect_false (prev__cctx != next->cctx))
826	{	1267	{
827	prev__cctx->top_env = PL_top_env;	1268	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1269	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1270	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1271	}
831		1272
832	free_coro_mortal (aTHX);	1273	free_coro_mortal (aTHX);
833	UNLOCK;	1274	UNLOCK;
		1275
		1276	if (expect_false (has_throw))
		1277	{
		1278	struct coro *coro = SvSTATE (coro_current);
		1279
		1280	if (coro->throw)
		1281	{
		1282	SV *exception = coro->throw;
		1283	coro->throw = 0;
		1284	sv_setsv (ERRSV, exception);
		1285	croak (0);
		1286	}
		1287	}
834	}	1288	}
835	}	1289	}
836		1290
837	struct transfer_args	1291	struct transfer_args
838	{	1292	{
839	struct coro *prev, *next;	1293	struct coro *prev, *next;
840	};	1294	};
841		1295
		1296	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1297	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843		1298
844	/** high level stuff ********************************************************/	1299	/** high level stuff ********************************************************/
845		1300
846	static int	1301	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1302	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1319
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1320	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1321	{
867	struct coro temp;	1322	struct coro temp;
868		1323
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)	1324	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1325	croak ("FATAL: tried to destroy currently running coroutine");
876		1326
877	save_perl (aTHX_ &temp);	1327	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1328	load_perl (aTHX_ coro);
879		1329
880	coro_destroy_stacks (aTHX);	1330	coro_destroy (aTHX_ coro);
881		1331
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1332	load_perl (aTHX_ &temp);
883		1333
884	coro->mainstack = 0;	1334	coro->slot = 0;
885	}	1335	}
886		1336
887	cctx_destroy (coro->cctx);	1337	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1338	SvREFCNT_dec (coro->args);
889		1339
		1340	if (coro->next) coro->next->prev = coro->prev;
		1341	if (coro->prev) coro->prev->next = coro->next;
		1342	if (coro == coro_first) coro_first = coro->next;
		1343
890	return 1;	1344	return 1;
891	}	1345	}
892		1346
893	static int	1347	static int
894	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1348	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895	{	1349	{
896	struct coro *coro = (struct coro *)mg->mg_ptr;	1350	struct coro *coro = (struct coro *)mg->mg_ptr;
897	mg->mg_ptr = 0;	1351	mg->mg_ptr = 0;
		1352
		1353	coro->hv = 0;
898		1354
899	if (--coro->refcnt < 0)	1355	if (--coro->refcnt < 0)
900	{	1356	{
901	coro_state_destroy (aTHX_ coro);	1357	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1358	Safefree (coro);
…		…
924	#else	1380	#else
925	# define MGf_DUP 0	1381	# define MGf_DUP 0
926	#endif	1382	#endif
927	};	1383	};
928		1384
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	1385	static void
953	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1386	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
954	{	1387	{
955	ta->prev = SvSTATE (prev_sv);	1388	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1389	ta->next = SvSTATE (next_sv);
		1390	TRANSFER_CHECK (*ta);
957	}	1391	}
958		1392
959	static void	1393	static void
960	api_transfer (SV *prev_sv, SV *next_sv)	1394	api_transfer (SV *prev_sv, SV *next_sv)
961	{	1395	{
962	dTHX;	1396	dTHX;
963	struct transfer_args ta;	1397	struct transfer_args ta;
964		1398
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1399	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1400	TRANSFER (ta, 1);
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	}	1401	}
981		1402
982	/** Coro ********************************************************************/	1403	/** Coro ********************************************************************/
983		1404
984	static void	1405	static void
…		…
986	{	1407	{
987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1408	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
988	}	1409	}
989		1410
990	static SV *	1411	static SV *
991	coro_deq (pTHX_ int min_prio)	1412	coro_deq (pTHX)
992	{	1413	{
993	int prio = PRIO_MAX - PRIO_MIN;	1414	int prio;
994		1415
995	min_prio -= PRIO_MIN;
996	if (min_prio < 0)
997	min_prio = 0;
998
999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1416	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000	if (AvFILLp (coro_ready [prio]) >= 0)	1417	if (AvFILLp (coro_ready [prio]) >= 0)
1001	return av_shift (coro_ready [prio]);	1418	return av_shift (coro_ready [prio]);
1002		1419
1003	return 0;	1420	return 0;
1004	}	1421	}
…		…
1006	static int	1423	static int
1007	api_ready (SV *coro_sv)	1424	api_ready (SV *coro_sv)
1008	{	1425	{
1009	dTHX;	1426	dTHX;
1010	struct coro *coro;	1427	struct coro *coro;
		1428	SV *sv_hook;
		1429	void (*xs_hook)(void);
1011		1430
1012	if (SvROK (coro_sv))	1431	if (SvROK (coro_sv))
1013	coro_sv = SvRV (coro_sv);	1432	coro_sv = SvRV (coro_sv);
1014		1433
1015	coro = SvSTATE (coro_sv);	1434	coro = SvSTATE (coro_sv);
…		…
1018	return 0;	1437	return 0;
1019		1438
1020	coro->flags |= CF_READY;	1439	coro->flags |= CF_READY;
1021		1440
1022	LOCK;	1441	LOCK;
		1442
		1443	sv_hook = coro_nready ? 0 : coro_readyhook;
		1444	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1445
1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1446	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1024	++coro_nready;	1447	++coro_nready;
		1448
1025	UNLOCK;	1449	UNLOCK;
		1450
		1451	if (sv_hook)
		1452	{
		1453	dSP;
		1454
		1455	ENTER;
		1456	SAVETMPS;
		1457
		1458	PUSHMARK (SP);
		1459	PUTBACK;
		1460	call_sv (sv_hook, G_DISCARD);
		1461	SPAGAIN;
		1462
		1463	FREETMPS;
		1464	LEAVE;
		1465	}
		1466
		1467	if (xs_hook)
		1468	xs_hook ();
1026		1469
1027	return 1;	1470	return 1;
1028	}	1471	}
1029		1472
1030	static int	1473	static int
…		…
1040	SV *prev_sv, *next_sv;	1483	SV *prev_sv, *next_sv;
1041		1484
1042	for (;;)	1485	for (;;)
1043	{	1486	{
1044	LOCK;	1487	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1488	next_sv = coro_deq (aTHX);
1046		1489
1047	/* nothing to schedule: call the idle handler */	1490	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1491	if (expect_false (!next_sv))
1049	{	1492	{
1050	dSP;	1493	dSP;
1051	UNLOCK;	1494	UNLOCK;
1052		1495
1053	ENTER;	1496	ENTER;
1054	SAVETMPS;	1497	SAVETMPS;
1055		1498
1056	PUSHMARK (SP);	1499	PUSHMARK (SP);
1057	PUTBACK;	1500	PUTBACK;
1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1501	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1502	SPAGAIN;
1059		1503
1060	FREETMPS;	1504	FREETMPS;
1061	LEAVE;	1505	LEAVE;
1062	continue;	1506	continue;
1063	}	1507	}
1064		1508
1065	ta->next = SvSTATE (next_sv);	1509	ta->next = SvSTATE (next_sv);
1066		1510
1067	/* cannot transfer to destroyed coros, skip and look for next */	1511	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1512	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1513	{
1070	UNLOCK;	1514	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1515	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1516	/* coro_nready is already taken care of by destroy */
1073	continue;	1517	continue;
…		…
1078	break;	1522	break;
1079	}	1523	}
1080		1524
1081	/* free this only after the transfer */	1525	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1526	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1527	ta->prev = SvSTATE (prev_sv);
1085		1528	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1529	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1530	ta->next->flags &= ~CF_READY;
		1531	SvRV_set (coro_current, next_sv);
1088		1532
1089	LOCK;	1533	LOCK;
1090	free_coro_mortal (aTHX);	1534	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1535	coro_mortal = prev_sv;
1092	UNLOCK;	1536	UNLOCK;
…		…
1118	{	1562	{
1119	dTHX;	1563	dTHX;
1120	struct transfer_args ta;	1564	struct transfer_args ta;
1121		1565
1122	prepare_schedule (aTHX_ &ta);	1566	prepare_schedule (aTHX_ &ta);
1123	TRANSFER (ta);	1567	TRANSFER (ta, 1);
1124	}	1568	}
1125		1569
1126	static int	1570	static int
1127	api_cede (void)	1571	api_cede (void)
1128	{	1572	{
1129	dTHX;	1573	dTHX;
1130	struct transfer_args ta;	1574	struct transfer_args ta;
1131		1575
1132	prepare_cede (aTHX_ &ta);	1576	prepare_cede (aTHX_ &ta);
1133		1577
1134	if (ta.prev != ta.next)	1578	if (expect_true (ta.prev != ta.next))
1135	{	1579	{
1136	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1137	return 1;	1581	return 1;
1138	}	1582	}
1139	else	1583	else
1140	return 0;	1584	return 0;
1141	}	1585	}
…		…
1146	dTHX;	1590	dTHX;
1147	struct transfer_args ta;	1591	struct transfer_args ta;
1148		1592
1149	if (prepare_cede_notself (aTHX_ &ta))	1593	if (prepare_cede_notself (aTHX_ &ta))
1150	{	1594	{
1151	TRANSFER (ta);	1595	TRANSFER (ta, 1);
1152	return 1;	1596	return 1;
1153	}	1597	}
1154	else	1598	else
1155	return 0;	1599	return 0;
1156	}	1600	}
1157		1601
		1602	static void
		1603	api_trace (SV *coro_sv, int flags)
		1604	{
		1605	dTHX;
		1606	struct coro *coro = SvSTATE (coro_sv);
		1607
		1608	if (flags & CC_TRACE)
		1609	{
		1610	if (!coro->cctx)
		1611	coro->cctx = cctx_new ();
		1612	else if (!(coro->cctx->flags & CC_TRACE))
		1613	croak ("cannot enable tracing on coroutine with custom stack");
		1614
		1615	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1616	}
		1617	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1618	{
		1619	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1620
		1621	if (coro->flags & CF_RUNNING)
		1622	PL_runops = RUNOPS_DEFAULT;
		1623	else
		1624	coro->slot->runops = RUNOPS_DEFAULT;
		1625	}
		1626	}
		1627
		1628	static int
		1629	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1630	{
		1631	AV *padlist;
		1632	AV *av = (AV *)mg->mg_obj;
		1633
		1634	abort ();
		1635
		1636	return 0;
		1637	}
		1638
		1639	static MGVTBL coro_gensub_vtbl = {
		1640	0, 0, 0, 0,
		1641	coro_gensub_free
		1642	};
		1643
1158	MODULE = Coro::State PACKAGE = Coro::State	1644	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1645
1160	PROTOTYPES: DISABLE	1646	PROTOTYPES: DISABLE
1161		1647
1162	BOOT:	1648	BOOT:
1163	{	1649	{
1164	#ifdef USE_ITHREADS	1650	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1651	MUTEX_INIT (&coro_mutex);
1166	#endif	1652	#endif
1167	BOOT_PAGESIZE;	1653	BOOT_PAGESIZE;
1168		1654
		1655	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1656	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1657
		1658	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1659	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1660	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1661
		1662	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1663	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1664	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1665
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1666	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1667
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1668	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1669	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));	1670	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1672
1179	main_mainstack = PL_mainstack;	1673	main_mainstack = PL_mainstack;
		1674	main_top_env = PL_top_env;
1180		1675
		1676	while (main_top_env->je_prev)
		1677	main_top_env = main_top_env->je_prev;
		1678
1181	coroapi.ver = CORO_API_VERSION;	1679	coroapi.ver = CORO_API_VERSION;
		1680	coroapi.rev = CORO_API_REVISION;
1182	coroapi.transfer = api_transfer;	1681	coroapi.transfer = api_transfer;
1183		1682
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1683	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185	}	1684	}
1186		1685
1187	SV *	1686	SV *
1188	new (char *klass, ...)	1687	new (char *klass, ...)
1189	CODE:	1688	CODE:
1190	{	1689	{
1191	struct coro *coro;	1690	struct coro *coro;
		1691	MAGIC *mg;
1192	HV *hv;	1692	HV *hv;
1193	int i;	1693	int i;
1194		1694
1195	Newz (0, coro, 1, struct coro);	1695	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1696	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1697	coro->flags = CF_NEW;
1199		1698
		1699	if (coro_first) coro_first->prev = coro;
		1700	coro->next = coro_first;
		1701	coro_first = coro;
		1702
1200	hv = newHV ();	1703	coro->hv = hv = newHV ();
1201	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1704	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1705	mg->mg_flags |= MGf_DUP;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1706	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1707
		1708	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1709	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1710	av_push (coro->args, newSVsv (ST (i)));
1206	}	1711	}
1207	OUTPUT:	1712	OUTPUT:
1208	RETVAL	1713	RETVAL
1209		1714
1210	int	1715	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1716	# function to increase chances that they all will call transfer with the same
1212	CODE:	1717	# 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	1718	void
1229	_set_stacklevel (...)	1719	_set_stacklevel (...)
1230	ALIAS:	1720	ALIAS:
1231	Coro::State::transfer = 1	1721	Coro::State::transfer = 1
1232	Coro::schedule = 2	1722	Coro::schedule = 2
…		…
1234	Coro::cede_notself = 4	1724	Coro::cede_notself = 4
1235	CODE:	1725	CODE:
1236	{	1726	{
1237	struct transfer_args ta;	1727	struct transfer_args ta;
1238		1728
		1729	PUTBACK;
1239	switch (ix)	1730	switch (ix)
1240	{	1731	{
1241	case 0:	1732	case 0:
1242	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1733	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243	ta.next = 0;	1734	ta.next = 0;
…		…
1262	if (!prepare_cede_notself (aTHX_ &ta))	1753	if (!prepare_cede_notself (aTHX_ &ta))
1263	XSRETURN_EMPTY;	1754	XSRETURN_EMPTY;
1264		1755
1265	break;	1756	break;
1266	}	1757	}
		1758	SPAGAIN;
1267		1759
1268	BARRIER;	1760	BARRIER;
		1761	PUTBACK;
1269	TRANSFER (ta);	1762	TRANSFER (ta, 0);
1270		1763	SPAGAIN; /* might be the sp of a different coroutine now */
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1764	/* be extra careful not to ever do anything after TRANSFER */
1272	XSRETURN_YES;
1273	}	1765	}
1274		1766
1275	bool	1767	bool
1276	_destroy (SV *coro_sv)	1768	_destroy (SV *coro_sv)
1277	CODE:	1769	CODE:
1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1770	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1279	OUTPUT:	1771	OUTPUT:
1280	RETVAL	1772	RETVAL
1281		1773
1282	void	1774	void
1283	_exit (code)	1775	_exit (int code)
1284	int code
1285	PROTOTYPE: $	1776	PROTOTYPE: $
1286	CODE:	1777	CODE:
1287	_exit (code);	1778	_exit (code);
1288		1779
1289	int	1780	int
…		…
1307	CODE:	1798	CODE:
1308	RETVAL = cctx_idle;	1799	RETVAL = cctx_idle;
1309	OUTPUT:	1800	OUTPUT:
1310	RETVAL	1801	RETVAL
1311		1802
		1803	void
		1804	list ()
		1805	PPCODE:
		1806	{
		1807	struct coro *coro;
		1808	for (coro = coro_first; coro; coro = coro->next)
		1809	if (coro->hv)
		1810	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1811	}
		1812
		1813	void
		1814	call (Coro::State coro, SV *coderef)
		1815	ALIAS:
		1816	eval = 1
		1817	CODE:
		1818	{
		1819	if (coro->mainstack)
		1820	{
		1821	struct coro temp;
		1822
		1823	if (!(coro->flags & CF_RUNNING))
		1824	{
		1825	PUTBACK;
		1826	save_perl (aTHX_ &temp);
		1827	load_perl (aTHX_ coro);
		1828	}
		1829
		1830	{
		1831	dSP;
		1832	ENTER;
		1833	SAVETMPS;
		1834	PUTBACK;
		1835	PUSHSTACK;
		1836	PUSHMARK (SP);
		1837
		1838	if (ix)
		1839	eval_sv (coderef, 0);
		1840	else
		1841	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1842
		1843	POPSTACK;
		1844	SPAGAIN;
		1845	FREETMPS;
		1846	LEAVE;
		1847	PUTBACK;
		1848	}
		1849
		1850	if (!(coro->flags & CF_RUNNING))
		1851	{
		1852	save_perl (aTHX_ coro);
		1853	load_perl (aTHX_ &temp);
		1854	SPAGAIN;
		1855	}
		1856	}
		1857	}
		1858
		1859	SV *
		1860	is_ready (Coro::State coro)
		1861	PROTOTYPE: $
		1862	ALIAS:
		1863	is_ready = CF_READY
		1864	is_running = CF_RUNNING
		1865	is_new = CF_NEW
		1866	is_destroyed = CF_DESTROYED
		1867	CODE:
		1868	RETVAL = boolSV (coro->flags & ix);
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	void
		1873	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1874
		1875	SV *
		1876	has_cctx (Coro::State coro)
		1877	PROTOTYPE: $
		1878	CODE:
		1879	RETVAL = boolSV (!!coro->cctx);
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	is_traced (Coro::State coro)
		1885	PROTOTYPE: $
		1886	CODE:
		1887	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1888	OUTPUT:
		1889	RETVAL
		1890
		1891	IV
		1892	rss (Coro::State coro)
		1893	PROTOTYPE: $
		1894	ALIAS:
		1895	usecount = 1
		1896	CODE:
		1897	switch (ix)
		1898	{
		1899	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1900	case 1: RETVAL = coro->usecount; break;
		1901	}
		1902	OUTPUT:
		1903	RETVAL
		1904
		1905	void
		1906	force_cctx ()
		1907	CODE:
		1908	struct coro *coro = SvSTATE (coro_current);
		1909	coro->cctx->idle_sp = 0;
		1910
		1911	void
		1912	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1913	PROTOTYPE: $;$
		1914	CODE:
		1915	SvREFCNT_dec (self->throw);
		1916	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1917
		1918	void
		1919	swap_defsv (Coro::State self)
		1920	PROTOTYPE: $
		1921	ALIAS:
		1922	swap_defav = 1
		1923	CODE:
		1924	if (!self->slot)
		1925	croak ("cannot swap state with coroutine that has no saved state");
		1926	else
		1927	{
		1928	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1929	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1930
		1931	SV *tmp = *src; *src = *dst; *dst = tmp;
		1932	}
		1933
1312	MODULE = Coro::State PACKAGE = Coro	1934	MODULE = Coro::State PACKAGE = Coro
1313		1935
1314	BOOT:	1936	BOOT:
1315	{	1937	{
1316	int i;	1938	int i;
1317		1939
		1940	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1941	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1942	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1943
		1944	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1945	SvREADONLY_on (coro_current);
		1946
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1947	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1948
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1949	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1950	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1951	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1952	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1953	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1954	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1955
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1956	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1957	coro_ready[i] = newAV ();
1332		1958
1333	{	1959	{
1334	SV *sv = perl_get_sv("Coro::API", 1);	1960	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1961	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335		1962
1336	coroapi.schedule = api_schedule;	1963	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1964	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1965	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1966	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1967	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1968	coroapi.nready = &coro_nready;
…		…
1352	_set_current (SV *current)	1978	_set_current (SV *current)
1353	PROTOTYPE: $	1979	PROTOTYPE: $
1354	CODE:	1980	CODE:
1355	SvREFCNT_dec (SvRV (coro_current));	1981	SvREFCNT_dec (SvRV (coro_current));
1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1982	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1983
		1984	void
		1985	_set_readyhook (SV *hook)
		1986	PROTOTYPE: $
		1987	CODE:
		1988	LOCK;
		1989	SvREFCNT_dec (coro_readyhook);
		1990	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1991	UNLOCK;
1357		1992
1358	int	1993	int
1359	prio (Coro::State coro, int newprio = 0)	1994	prio (Coro::State coro, int newprio = 0)
1360	ALIAS:	1995	ALIAS:
1361	nice = 1	1996	nice = 1
…		…
1383	CODE:	2018	CODE:
1384	RETVAL = boolSV (api_ready (self));	2019	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	2020	OUTPUT:
1386	RETVAL	2021	RETVAL
1387		2022
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	2023	int
1397	nready (...)	2024	nready (...)
1398	PROTOTYPE:	2025	PROTOTYPE:
1399	CODE:	2026	CODE:
1400	RETVAL = coro_nready;	2027	RETVAL = coro_nready;
1401	OUTPUT:	2028	OUTPUT:
1402	RETVAL	2029	RETVAL
1403		2030
		2031	# for async_pool speedup
		2032	void
		2033	_pool_1 (SV *cb)
		2034	CODE:
		2035	{
		2036	struct coro *coro = SvSTATE (coro_current);
		2037	HV *hv = (HV *)SvRV (coro_current);
		2038	AV *defav = GvAV (PL_defgv);
		2039	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2040	AV *invoke_av;
		2041	int i, len;
		2042
		2043	if (!invoke)
		2044	{
		2045	SV *old = PL_diehook;
		2046	PL_diehook = 0;
		2047	SvREFCNT_dec (old);
		2048	croak ("\3async_pool terminate\2\n");
		2049	}
		2050
		2051	SvREFCNT_dec (coro->saved_deffh);
		2052	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2053
		2054	hv_store (hv, "desc", sizeof ("desc") - 1,
		2055	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2056
		2057	invoke_av = (AV *)SvRV (invoke);
		2058	len = av_len (invoke_av);
		2059
		2060	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2061
		2062	if (len > 0)
		2063	{
		2064	av_fill (defav, len - 1);
		2065	for (i = 0; i < len; ++i)
		2066	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2067	}
		2068
		2069	SvREFCNT_dec (invoke);
		2070	}
		2071
		2072	void
		2073	_pool_2 (SV *cb)
		2074	CODE:
		2075	{
		2076	struct coro *coro = SvSTATE (coro_current);
		2077
		2078	sv_setsv (cb, &PL_sv_undef);
		2079
		2080	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2081	coro->saved_deffh = 0;
		2082
		2083	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2084	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2085	{
		2086	SV *old = PL_diehook;
		2087	PL_diehook = 0;
		2088	SvREFCNT_dec (old);
		2089	croak ("\3async_pool terminate\2\n");
		2090	}
		2091
		2092	av_clear (GvAV (PL_defgv));
		2093	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2094	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2095
		2096	coro->prio = 0;
		2097
		2098	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2099	api_trace (coro_current, 0);
		2100
		2101	av_push (av_async_pool, newSVsv (coro_current));
		2102	}
		2103
		2104	#if 0
		2105
		2106	void
		2107	_generator_call (...)
		2108	PROTOTYPE: @
		2109	PPCODE:
		2110	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2111	xxxx
		2112	abort ();
		2113
		2114	SV *
		2115	gensub (SV *sub, ...)
		2116	PROTOTYPE: &;@
		2117	CODE:
		2118	{
		2119	struct coro *coro;
		2120	MAGIC *mg;
		2121	CV *xcv;
		2122	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2123	int i;
		2124
		2125	CvGV (ncv) = CvGV (cv);
		2126	CvFILE (ncv) = CvFILE (cv);
		2127
		2128	Newz (0, coro, 1, struct coro);
		2129	coro->args = newAV ();
		2130	coro->flags = CF_NEW;
		2131
		2132	av_extend (coro->args, items - 1);
		2133	for (i = 1; i < items; i++)
		2134	av_push (coro->args, newSVsv (ST (i)));
		2135
		2136	CvISXSUB_on (ncv);
		2137	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2138
		2139	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2140
		2141	CvXSUB (ncv) = CvXSUB (xcv);
		2142	CvANON_on (ncv);
		2143
		2144	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2145	RETVAL = newRV_noinc ((SV *)ncv);
		2146	}
		2147	OUTPUT:
		2148	RETVAL
		2149
		2150	#endif
		2151
		2152
1404	MODULE = Coro::State PACKAGE = Coro::AIO	2153	MODULE = Coro::State PACKAGE = Coro::AIO
1405		2154
1406	SV *	2155	SV *
1407	_get_state ()	2156	_get_state ()
1408	CODE:	2157	CODE:
…		…
1433	PL_laststype = data->laststype;	2182	PL_laststype = data->laststype;
1434	PL_laststatval = data->laststatval;	2183	PL_laststatval = data->laststatval;
1435	PL_statcache = data->statcache;	2184	PL_statcache = data->statcache;
1436	}	2185	}
1437		2186
		2187
		2188	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2189
		2190	BOOT:
		2191	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2192
		2193	SV *
		2194	_schedule (...)
		2195	PROTOTYPE: @
		2196	CODE:
		2197	{
		2198	static int incede;
		2199
		2200	api_cede_notself ();
		2201
		2202	++incede;
		2203	while (coro_nready >= incede && api_cede ())
		2204	;
		2205
		2206	sv_setsv (sv_activity, &PL_sv_undef);
		2207	if (coro_nready >= incede)
		2208	{
		2209	PUSHMARK (SP);
		2210	PUTBACK;
		2211	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2212	SPAGAIN;
		2213	}
		2214
		2215	--incede;
		2216	}
		2217

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