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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.148 by root, Fri Apr 13 12:56:55 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
…		…
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 */
134	static JMPENV *main_top_env;	161	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
136	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;
137		178
138	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
139	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	};
140		190
141	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	192	typedef struct coro_cctx {
143	struct coro_cctx *next;	193	struct coro_cctx *next;
144		194
…		…
153	coro_context cctx;	203	coro_context cctx;
154		204
155	#if CORO_USE_VALGRIND	205	#if CORO_USE_VALGRIND
156	int valgrind_id;	206	int valgrind_id;
157	#endif	207	#endif
158	char inuse, mapped;	208	unsigned char flags;
159	} coro_cctx;	209	} coro_cctx;
160		210
161	enum {	211	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	216	};
167		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
168	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
169	struct coro {	232	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	234	coro_cctx *cctx;
172		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
173	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
178		244
179	/* optionally saved, might be zero */	245	/* statistics */
180	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		247
191	/* coro process data */	248	/* coro process data */
192	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;
193	};	257	};
194		258
195	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
196	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
197		261
…		…
204	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
205	#define PRIO_MIN -4	269	#define PRIO_MIN -4
206		270
207	/* for Coro.pm */	271	/* for Coro.pm */
208	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
210	static int coro_nready;	275	static int coro_nready;
		276	static struct coro *coro_first;
211		277
212	/** 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	}
213		309
214	static AV *	310	static AV *
215	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
216	{	312	{
217	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
218	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
219		315
220	newpadlist = newAV ();	316	newpadlist = newAV ();
221	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
222	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
223	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
224	#else	320	#else
225	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
226	#endif	322	#endif
227	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
265		361
266	/* casting is fun. */	362	/* casting is fun. */
267	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
269		365
270	SvREFCNT_dec (av);
271
272	return 0;	366	return 0;
273	}	367	}
274		368
275	#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
276		371
277	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	};
278		376
279	#define CORO_MAGIC(cv) \	377	#define CORO_MAGIC(sv,type) \
280	SvMAGIC (cv) \	378	SvMAGIC (sv) \
281	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	379	? SvMAGIC (sv)->mg_type == type \
282	? SvMAGIC (cv) \	380	? SvMAGIC (sv) \
283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	381	: mg_find (sv, type) \
284	: 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))
285		412
286	/* the next two functions merely cache the padlists */	413	/* the next two functions merely cache the padlists */
287	static void	414	static void
288	get_padlist (pTHX_ CV *cv)	415	get_padlist (pTHX_ CV *cv)
289	{	416	{
290	MAGIC *mg = CORO_MAGIC (cv);	417	MAGIC *mg = CORO_MAGIC_cv (cv);
291	AV *av;	418	AV *av;
292		419
293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	420	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	421	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295	else	422	else
296	{	423	{
297	#if CORO_PREFER_PERL_FUNCTIONS	424	#if CORO_PREFER_PERL_FUNCTIONS
298	/* this is probably cleaner, but also slower? */	425	/* this is probably cleaner, but also slower? */
…		…
307	}	434	}
308		435
309	static void	436	static void
310	put_padlist (pTHX_ CV *cv)	437	put_padlist (pTHX_ CV *cv)
311	{	438	{
312	MAGIC *mg = CORO_MAGIC (cv);	439	MAGIC *mg = CORO_MAGIC_cv (cv);
313	AV *av;	440	AV *av;
314		441
315	if (!mg)	442	if (expect_false (!mg))
316	{	443	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
317	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319	mg->mg_virtual = &vtbl_coro;
320	mg->mg_obj = (SV *)newAV ();
321	}
322		444
323	av = (AV *)mg->mg_obj;	445	av = (AV *)mg->mg_obj;
324		446
325	if (AvFILLp (av) >= AvMAX (av))	447	if (expect_false (AvFILLp (av) >= AvMAX (av)))
326	av_extend (av, AvMAX (av) + 1);	448	av_extend (av, AvMAX (av) + 1);
327		449
328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	450	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329	}	451	}
330		452
331	/** load & save, init *******************************************************/	453	/** load & save, init *******************************************************/
332
333	#define SB do {
334	#define SE } while (0)
335
336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337		454
338	static void	455	static void
339	load_perl (pTHX_ Coro__State c)	456	load_perl (pTHX_ Coro__State c)
340	{	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
341	#define VAR(name,type) PL_ ## name = c->name;	468	#define VAR(name,type) PL_ ## name = slot->name;
342	# include "state.h"	469	# include "state.h"
343	#undef VAR	470	#undef VAR
344
345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350	if (c->irssv)
351	{
352	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353	{
354	SvREFCNT_dec (c->irssv);
355	c->irssv = 0;
356	}
357	else
358	{
359	REPLACE_SV (PL_rs, c->irssv);
360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361	sv_setsv (c->irssv_sv, PL_rs);
362	}
363	}
364		471
365	{	472	{
366	dSP;	473	dSP;
		474
367	CV *cv;	475	CV *cv;
368		476
369	/* now do the ugly restore mess */	477	/* now do the ugly restore mess */
370	while ((cv = (CV *)POPs))	478	while (expect_true (cv = (CV *)POPs))
371	{	479	{
372	put_padlist (aTHX_ cv); /* mark this padlist as available */	480	put_padlist (aTHX_ cv); /* mark this padlist as available */
373	CvDEPTH (cv) = PTR2IV (POPs);	481	CvDEPTH (cv) = PTR2IV (POPs);
374	CvPADLIST (cv) = (AV *)POPs;	482	CvPADLIST (cv) = (AV *)POPs;
375	}	483	}
376		484
377	PUTBACK;	485	PUTBACK;
378	}	486	}
379	assert (!PL_comppad || AvARRAY (PL_comppad));//D
380	}	487	}
381		488
382	static void	489	static void
383	save_perl (pTHX_ Coro__State c)	490	save_perl (pTHX_ Coro__State c)
384	{	491	{
385	assert (!PL_comppad || AvARRAY (PL_comppad));//D
386	{	492	{
387	dSP;	493	dSP;
388	I32 cxix = cxstack_ix;	494	I32 cxix = cxstack_ix;
389	PERL_CONTEXT *ccstk = cxstack;	495	PERL_CONTEXT *ccstk = cxstack;
390	PERL_SI *top_si = PL_curstackinfo;	496	PERL_SI *top_si = PL_curstackinfo;
…		…
392	/*	498	/*
393	* 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
394	* (and reinitialize) all cv's in the whole callchain :(	500	* (and reinitialize) all cv's in the whole callchain :(
395	*/	501	*/
396		502
397	EXTEND (SP, 3 + 1);
398	PUSHs (Nullsv);	503	XPUSHs (Nullsv);
399	/* this loop was inspired by pp_caller */	504	/* this loop was inspired by pp_caller */
400	for (;;)	505	for (;;)
401	{	506	{
402	while (cxix >= 0)	507	while (expect_true (cxix >= 0))
403	{	508	{
404	PERL_CONTEXT *cx = &ccstk[cxix--];	509	PERL_CONTEXT *cx = &ccstk[cxix--];
405		510
406	if (CxTYPE (cx) == CXt_SUB)	511	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407	{	512	{
408	CV *cv = cx->blk_sub.cv;	513	CV *cv = cx->blk_sub.cv;
409		514
410	if (CvDEPTH (cv))	515	if (expect_true (CvDEPTH (cv)))
411	{	516	{
412	EXTEND (SP, 3);	517	EXTEND (SP, 3);
413	PUSHs ((SV *)CvPADLIST (cv));	518	PUSHs ((SV *)CvPADLIST (cv));
414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	519	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
415	PUSHs ((SV *)cv);	520	PUSHs ((SV *)cv);
416		521
417	CvDEPTH (cv) = 0;	522	CvDEPTH (cv) = 0;
418	get_padlist (aTHX_ cv);	523	get_padlist (aTHX_ cv);
419	}	524	}
420	}	525	}
421	}	526	}
422		527
423	if (top_si->si_type == PERLSI_MAIN)	528	if (expect_true (top_si->si_type == PERLSI_MAIN))
424	break;	529	break;
425		530
426	top_si = top_si->si_prev;	531	top_si = top_si->si_prev;
427	ccstk = top_si->si_cxstack;	532	ccstk = top_si->si_cxstack;
428	cxix = top_si->si_cxix;	533	cxix = top_si->si_cxix;
429	}	534	}
430		535
431	PUTBACK;	536	PUTBACK;
432	}	537	}
433		538
434	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 */
435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	540	/* we manually unroll here, as usually 2 slots is enough */
436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	541	if (SLOT_COUNT >= 1) CXINC;
437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	542	if (SLOT_COUNT >= 2) CXINC;
438	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 */
439		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
440	#define VAR(name,type)c->name = PL_ ## name;	561	#define VAR(name,type) slot->name = PL_ ## name;
441	# include "state.h"	562	# include "state.h"
442	#undef VAR	563	#undef VAR
		564	}
443	}	565	}
444		566
445	/*	567	/*
446	* allocate various perl stacks. This is an exact copy	568	* allocate various perl stacks. This is an exact copy
447	* of perl.c:init_stacks, except that it uses less memory	569	* of perl.c:init_stacks, except that it uses less memory
…		…
452	# define coro_init_stacks init_stacks	574	# define coro_init_stacks init_stacks
453	#else	575	#else
454	static void	576	static void
455	coro_init_stacks (pTHX)	577	coro_init_stacks (pTHX)
456	{	578	{
457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	579	PL_curstackinfo = new_stackinfo(32, 8);
458	PL_curstackinfo->si_type = PERLSI_MAIN;	580	PL_curstackinfo->si_type = PERLSI_MAIN;
459	PL_curstack = PL_curstackinfo->si_stack;	581	PL_curstack = PL_curstackinfo->si_stack;
460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	582	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461		583
462	PL_stack_base = AvARRAY(PL_curstack);	584	PL_stack_base = AvARRAY(PL_curstack);
463	PL_stack_sp = PL_stack_base;	585	PL_stack_sp = PL_stack_base;
464	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	586	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465		587
466	New(50,PL_tmps_stack,128,SV*);	588	New(50,PL_tmps_stack,32,SV*);
467	PL_tmps_floor = -1;	589	PL_tmps_floor = -1;
468	PL_tmps_ix = -1;	590	PL_tmps_ix = -1;
469	PL_tmps_max = 128;	591	PL_tmps_max = 32;
470		592
471	New(54,PL_markstack,32,I32);	593	New(54,PL_markstack,16,I32);
472	PL_markstack_ptr = PL_markstack;	594	PL_markstack_ptr = PL_markstack;
473	PL_markstack_max = PL_markstack + 32;	595	PL_markstack_max = PL_markstack + 16;
474		596
475	#ifdef SET_MARK_OFFSET	597	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	598	SET_MARK_OFFSET;
477	#endif	599	#endif
478		600
479	New(54,PL_scopestack,32,I32);	601	New(54,PL_scopestack,8,I32);
480	PL_scopestack_ix = 0;	602	PL_scopestack_ix = 0;
481	PL_scopestack_max = 32;	603	PL_scopestack_max = 8;
482		604
483	New(54,PL_savestack,64,ANY);	605	New(54,PL_savestack,24,ANY);
484	PL_savestack_ix = 0;	606	PL_savestack_ix = 0;
485	PL_savestack_max = 64;	607	PL_savestack_max = 24;
486		608
487	#if !PERL_VERSION_ATLEAST (5,9,0)	609	#if !PERL_VERSION_ATLEAST (5,10,0)
488	New(54,PL_retstack,16,OP*);	610	New(54,PL_retstack,4,OP*);
489	PL_retstack_ix = 0;	611	PL_retstack_ix = 0;
490	PL_retstack_max = 16;	612	PL_retstack_max = 4;
491	#endif	613	#endif
492	}	614	}
493	#endif	615	#endif
494		616
495	/*	617	/*
496	* destroy the stacks, the callchain etc...	618	* destroy the stacks, the callchain etc...
497	*/	619	*/
498	static void	620	static void
499	coro_destroy_stacks (pTHX)	621	coro_destroy_stacks (pTHX)
500	{	622	{
501	if (!IN_DESTRUCT)
502	{
503	/* restore all saved variables and stuff */
504	LEAVE_SCOPE (0);
505	assert (PL_tmps_floor == -1);
506
507	/* free all temporaries */
508	FREETMPS;
509	assert (PL_tmps_ix == -1);
510
511	/* unwind all extra stacks */
512	POPSTACK_TO (PL_mainstack);
513
514	/* unwind main stack */
515	dounwind (-1);
516	}
517
518	while (PL_curstackinfo->si_next)	623	while (PL_curstackinfo->si_next)
519	PL_curstackinfo = PL_curstackinfo->si_next;	624	PL_curstackinfo = PL_curstackinfo->si_next;
520		625
521	while (PL_curstackinfo)	626	while (PL_curstackinfo)
522	{	627	{
…		…
532		637
533	Safefree (PL_tmps_stack);	638	Safefree (PL_tmps_stack);
534	Safefree (PL_markstack);	639	Safefree (PL_markstack);
535	Safefree (PL_scopestack);	640	Safefree (PL_scopestack);
536	Safefree (PL_savestack);	641	Safefree (PL_savestack);
537	#if !PERL_VERSION_ATLEAST (5,9,0)	642	#if !PERL_VERSION_ATLEAST (5,10,0)
538	Safefree (PL_retstack);	643	Safefree (PL_retstack);
539	#endif	644	#endif
540	}	645	}
541		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
542	/** coroutine stack handling ************************************************/	684	/** coroutine stack handling ************************************************/
543		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
544	static void	776	static void
545	setup_coro (pTHX_ struct coro *coro)	777	coro_setup (pTHX_ struct coro *coro)
546	{	778	{
547	/*	779	/*
548	* emulate part of the perl startup here.	780	* emulate part of the perl startup here.
549	*/	781	*/
550	coro_init_stacks (aTHX);	782	coro_init_stacks (aTHX);
551		783
		784	PL_runops = RUNOPS_DEFAULT;
552	PL_curcop = &PL_compiling;	785	PL_curcop = &PL_compiling;
553	PL_in_eval = EVAL_NULL;	786	PL_in_eval = EVAL_NULL;
554	PL_comppad = 0;	787	PL_comppad = 0;
555	PL_curpm = 0;	788	PL_curpm = 0;
		789	PL_curpad = 0;
556	PL_localizing = 0;	790	PL_localizing = 0;
557	PL_dirty = 0;	791	PL_dirty = 0;
558	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);
559		807
560	{	808	{
561	dSP;	809	dSP;
562	LOGOP myop;	810	LOGOP myop;
563		811
564	SvREFCNT_dec (GvAV (PL_defgv));
565	GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567	Zero (&myop, 1, LOGOP);	812	Zero (&myop, 1, LOGOP);
568	myop.op_next = Nullop;	813	myop.op_next = Nullop;
569	myop.op_flags = OPf_WANT_VOID;	814	myop.op_flags = OPf_WANT_VOID;
570		815
571	PUSHMARK (SP);	816	PUSHMARK (SP);
572	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	817	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573	PUTBACK;	818	PUTBACK;
574	PL_op = (OP *)&myop;	819	PL_op = (OP *)&myop;
575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576	SPAGAIN;	821	SPAGAIN;
577	}	822	}
578		823
579	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);
580	}	866	}
581		867
582	static void	868	static void
583	free_coro_mortal (pTHX)	869	free_coro_mortal (pTHX)
584	{	870	{
585	if (coro_mortal)	871	if (expect_true (coro_mortal))
586	{	872	{
587	SvREFCNT_dec (coro_mortal);	873	SvREFCNT_dec (coro_mortal);
588	coro_mortal = 0;	874	coro_mortal = 0;
589	}	875	}
590	}	876	}
591		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
592	/* 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 */
593	/* _cctx_init shoukld be careful, as it could be called at almost any time */	1003	/* _cctx_init should be careful, as it could be called at almost any time */
594	/* during execution of a pelr program */	1004	/* during execution of a perl program */
595	static void NOINLINE	1005	static void NOINLINE
596	prepare_cctx (pTHX_ coro_cctx *cctx)	1006	cctx_prepare (pTHX_ coro_cctx *cctx)
597	{	1007	{
598	dSP;	1008	dSP;
599	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;
600		1015
601	Zero (&myop, 1, LOGOP);	1016	Zero (&myop, 1, LOGOP);
602	myop.op_next = PL_op;	1017	myop.op_next = PL_op;
603	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1018	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604		1019
…		…
614		1029
615	/*	1030	/*
616	* this is a _very_ stripped down perl interpreter ;)	1031	* this is a _very_ stripped down perl interpreter ;)
617	*/	1032	*/
618	static void	1033	static void
619	coro_run (void *arg)	1034	cctx_run (void *arg)
620	{	1035	{
621	dTHX;	1036	dTHX;
622		1037
623	/* coro_run is the alternative tail of transfer(), so unlock here. */	1038	/* cctx_run is the alternative tail of transfer(), so unlock here. */
624	UNLOCK;	1039	UNLOCK;
625		1040
626	PL_top_env = &PL_start_env;	1041	/* we now skip the entersub that lead to transfer() */
		1042	PL_op = PL_op->op_next;
627		1043
628	/* inject a fake subroutine call to cctx_init */	1044	/* inject a fake subroutine call to cctx_init */
629	prepare_cctx (aTHX_ (coro_cctx *)arg);	1045	cctx_prepare (aTHX_ (coro_cctx *)arg);
630		1046
631	/* somebody or something will hit me for both perl_run and PL_restartop */	1047	/* somebody or something will hit me for both perl_run and PL_restartop */
632	PL_restartop = PL_op;	1048	PL_restartop = PL_op;
633	perl_run (PL_curinterp);	1049	perl_run (PL_curinterp);
634		1050
		1051	/*
635	/* If perl-run returns we assume exit() was being called, which */	1052	* If perl-run returns we assume exit() was being called or the coro
636	/* seems to be the only valid (non-bug) reason for perl_run to return. */	1053	* fell off the end, which seems to be the only valid (non-bug)
637	/* We try to exit by jumping to the bootstrap-time "top" top_env, as */	1054	* reason for perl_run to return. We try to exit by jumping to the
638	/* we cannot restore the "main" coroutine as Coro has no such concept */	1055	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1056	* coroutine as Coro has no such concept
		1057	*/
639	PL_top_env = main_top_env;	1058	PL_top_env = main_top_env;
640	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1059	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
641	}	1060	}
642		1061
643	static coro_cctx *	1062	static coro_cctx *
…		…
650	++cctx_count;	1069	++cctx_count;
651		1070
652	Newz (0, cctx, 1, coro_cctx);	1071	Newz (0, cctx, 1, coro_cctx);
653		1072
654	#if HAVE_MMAP	1073	#if HAVE_MMAP
655
656	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;
657	/* mmap supposedly does allocate-on-write for us */	1075	/* mmap supposedly does allocate-on-write for us */
658	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);
659		1077
660	if (cctx->sptr != (void *)-1)	1078	if (cctx->sptr != (void *)-1)
…		…
662	# if CORO_STACKGUARD	1080	# if CORO_STACKGUARD
663	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1081	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
664	# endif	1082	# endif
665	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1083	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
666	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1084	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
667	cctx->mapped = 1;	1085	cctx->flags |= CC_MAPPED;
668	}	1086	}
669	else	1087	else
670	#endif	1088	#endif
671	{	1089	{
672	cctx->ssize = coro_stacksize * (long)sizeof (long);	1090	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
681	stack_start = cctx->sptr;	1099	stack_start = cctx->sptr;
682	stack_size = cctx->ssize;	1100	stack_size = cctx->ssize;
683	}	1101	}
684		1102
685	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1103	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
686	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);
687		1105
688	return cctx;	1106	return cctx;
689	}	1107	}
690		1108
691	static void	1109	static void
…		…
699	#if CORO_USE_VALGRIND	1117	#if CORO_USE_VALGRIND
700	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1118	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
701	#endif	1119	#endif
702		1120
703	#if HAVE_MMAP	1121	#if HAVE_MMAP
704	if (cctx->mapped)	1122	if (cctx->flags & CC_MAPPED)
705	munmap (cctx->sptr, cctx->ssize);	1123	munmap (cctx->sptr, cctx->ssize);
706	else	1124	else
707	#endif	1125	#endif
708	Safefree (cctx->sptr);	1126	Safefree (cctx->sptr);
709		1127
710	Safefree (cctx);	1128	Safefree (cctx);
711	}	1129	}
712		1130
		1131	/* wether this cctx should be destructed */
		1132	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1133
713	static coro_cctx *	1134	static coro_cctx *
714	cctx_get (pTHX)	1135	cctx_get (pTHX)
715	{	1136	{
716	while (cctx_first)	1137	while (expect_true (cctx_first))
717	{	1138	{
718	coro_cctx *cctx = cctx_first;	1139	coro_cctx *cctx = cctx_first;
719	cctx_first = cctx->next;	1140	cctx_first = cctx->next;
720	--cctx_idle;	1141	--cctx_idle;
721		1142
722	if (cctx->ssize >= coro_stacksize)	1143	if (expect_true (!CCTX_EXPIRED (cctx)))
723	return cctx;	1144	return cctx;
724		1145
725	cctx_destroy (cctx);	1146	cctx_destroy (cctx);
726	}	1147	}
727		1148
728	PL_op = PL_op->op_next;
729	return cctx_new ();	1149	return cctx_new ();
730	}	1150	}
731		1151
732	static void	1152	static void
733	cctx_put (coro_cctx *cctx)	1153	cctx_put (coro_cctx *cctx)
734	{	1154	{
735	/* free another cctx if overlimit */	1155	/* free another cctx if overlimit */
736	if (cctx_idle >= MAX_IDLE_CCTX)	1156	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
737	{	1157	{
738	coro_cctx *first = cctx_first;	1158	coro_cctx *first = cctx_first;
739	cctx_first = first->next;	1159	cctx_first = first->next;
740	--cctx_idle;	1160	--cctx_idle;
741		1161
742	assert (!first->inuse);
743	cctx_destroy (first);	1162	cctx_destroy (first);
744	}	1163	}
745		1164
746	++cctx_idle;	1165	++cctx_idle;
747	cctx->next = cctx_first;	1166	cctx->next = cctx_first;
748	cctx_first = cctx;	1167	cctx_first = cctx;
749	}	1168	}
750		1169
751	/** coroutine switching *****************************************************/	1170	/** coroutine switching *****************************************************/
752		1171
753	/* 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 */
754	static void NOINLINE	1194	static void NOINLINE
755	transfer (pTHX_ struct coro *prev, struct coro *next)	1195	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
756	{	1196	{
757	dSTACKLEVEL;	1197	dSTACKLEVEL;
		1198	static volatile int has_throw;
758		1199
759	/* sometimes transfer is only called to set idle_sp */	1200	/* sometimes transfer is only called to set idle_sp */
760	if (!next)	1201	if (expect_false (!next))
761	{	1202	{
762	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1203	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
763	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 */
764	}	1205	}
765	else if (prev != next)	1206	else if (expect_true (prev != next))
766	{	1207	{
767	coro_cctx *prev__cctx;	1208	coro_cctx *prev__cctx;
768		1209
769	if (prev->flags & CF_NEW)	1210	if (expect_false (prev->flags & CF_NEW))
770	{	1211	{
771	/* create a new empty context */	1212	/* create a new empty context */
772	Newz (0, prev->cctx, 1, coro_cctx);	1213	Newz (0, prev->cctx, 1, coro_cctx);
773	prev->cctx->inuse = 1;
774	prev->flags &= ~CF_NEW;	1214	prev->flags &= ~CF_NEW;
775	prev->flags |= CF_RUNNING;	1215	prev->flags |= CF_RUNNING;
776	}	1216	}
777		1217
778	/*TODO: must not croak here */
779	if (!prev->flags & CF_RUNNING)
780	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
781
782	if (next->flags & CF_RUNNING)
783	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
784
785	if (next->flags & CF_DESTROYED)
786	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
787
788	prev->flags &= ~CF_RUNNING;	1218	prev->flags &= ~CF_RUNNING;
789	next->flags |= CF_RUNNING;	1219	next->flags |= CF_RUNNING;
790		1220
791	LOCK;	1221	LOCK;
792		1222
		1223	/* first get rid of the old state */
		1224	save_perl (aTHX_ prev);
		1225
793	if (next->flags & CF_NEW)	1226	if (expect_false (next->flags & CF_NEW))
794	{	1227	{
795	/* need to start coroutine */	1228	/* need to start coroutine */
796	next->flags &= ~CF_NEW;	1229	next->flags &= ~CF_NEW;
797	/* first get rid of the old state */
798	save_perl (aTHX_ prev);
799	/* setup coroutine call */	1230	/* setup coroutine call */
800	setup_coro (aTHX_ next);	1231	coro_setup (aTHX_ next);
801	/* need a new stack */
802	assert (!next->cctx);
803	}	1232	}
804	else	1233	else
805	{
806	/* coroutine already started */
807	save_perl (aTHX_ prev);
808	load_perl (aTHX_ next);	1234	load_perl (aTHX_ next);
809	}
810		1235
811	prev__cctx = prev->cctx;	1236	prev__cctx = prev->cctx;
812		1237
813	/* possibly "free" the cctx */	1238	/* possibly "free" the cctx */
		1239	if (expect_true (
814	if (prev__cctx->idle_sp == STACKLEVEL)	1240	prev__cctx->idle_sp == STACKLEVEL
		1241	&& !(prev__cctx->flags & CC_TRACE)
		1242	&& !force_cctx
		1243	))
815	{	1244	{
816	/* 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 */
817	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));
818		1247
819	prev->cctx = 0;	1248	prev->cctx = 0;
820		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
821	cctx_put (prev__cctx);	1256	cctx_put (prev__cctx);
822	prev__cctx->inuse = 0;
823	}	1257	}
824		1258
		1259	++next->usecount;
		1260
825	if (!next->cctx)	1261	if (expect_true (!next->cctx))
826	{
827	next->cctx = cctx_get (aTHX);	1262	next->cctx = cctx_get (aTHX);
828	assert (!next->cctx->inuse);
829	next->cctx->inuse = 1;
830	}
831		1263
		1264	has_throw = !!next->throw;
		1265
832	if (prev__cctx != next->cctx)	1266	if (expect_false (prev__cctx != next->cctx))
833	{	1267	{
834	prev__cctx->top_env = PL_top_env;	1268	prev__cctx->top_env = PL_top_env;
835	PL_top_env = next->cctx->top_env;	1269	PL_top_env = next->cctx->top_env;
836	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1270	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
837	}	1271	}
838		1272
839	free_coro_mortal (aTHX);	1273	free_coro_mortal (aTHX);
840	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	}
841	}	1288	}
842	}	1289	}
843		1290
844	struct transfer_args	1291	struct transfer_args
845	{	1292	{
846	struct coro *prev, *next;	1293	struct coro *prev, *next;
847	};	1294	};
848		1295
		1296	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
849	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1297	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
850		1298
851	/** high level stuff ********************************************************/	1299	/** high level stuff ********************************************************/
852		1300
853	static int	1301	static int
854	coro_state_destroy (pTHX_ struct coro *coro)	1302	coro_state_destroy (pTHX_ struct coro *coro)
…		…
871		1319
872	if (coro->mainstack && coro->mainstack != main_mainstack)	1320	if (coro->mainstack && coro->mainstack != main_mainstack)
873	{	1321	{
874	struct coro temp;	1322	struct coro temp;
875		1323
876	assert (!(coro->flags & CF_RUNNING));
877
878	Zero (&temp, 1, struct coro);
879	temp.save = CORO_SAVE_DEF;
880
881	if (coro->flags & CF_RUNNING)	1324	if (coro->flags & CF_RUNNING)
882	croak ("FATAL: tried to destroy currently running coroutine");	1325	croak ("FATAL: tried to destroy currently running coroutine");
883		1326
884	save_perl (aTHX_ &temp);	1327	save_perl (aTHX_ &temp);
885	load_perl (aTHX_ coro);	1328	load_perl (aTHX_ coro);
886		1329
887	coro_destroy_stacks (aTHX);	1330	coro_destroy (aTHX_ coro);
888		1331
889	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1332	load_perl (aTHX_ &temp);
890		1333
891	coro->mainstack = 0;	1334	coro->slot = 0;
892	}	1335	}
893		1336
894	cctx_destroy (coro->cctx);	1337	cctx_destroy (coro->cctx);
895	SvREFCNT_dec (coro->args);	1338	SvREFCNT_dec (coro->args);
896		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
897	return 1;	1344	return 1;
898	}	1345	}
899		1346
900	static int	1347	static int
901	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1348	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
902	{	1349	{
903	struct coro *coro = (struct coro *)mg->mg_ptr;	1350	struct coro *coro = (struct coro *)mg->mg_ptr;
904	mg->mg_ptr = 0;	1351	mg->mg_ptr = 0;
		1352
		1353	coro->hv = 0;
905		1354
906	if (--coro->refcnt < 0)	1355	if (--coro->refcnt < 0)
907	{	1356	{
908	coro_state_destroy (aTHX_ coro);	1357	coro_state_destroy (aTHX_ coro);
909	Safefree (coro);	1358	Safefree (coro);
…		…
931	#else	1380	#else
932	# define MGf_DUP 0	1381	# define MGf_DUP 0
933	#endif	1382	#endif
934	};	1383	};
935		1384
936	static struct coro *
937	SvSTATE_ (pTHX_ SV *coro)
938	{
939	HV *stash;
940	MAGIC *mg;
941
942	if (SvROK (coro))
943	coro = SvRV (coro);
944
945	stash = SvSTASH (coro);
946	if (stash != coro_stash && stash != coro_state_stash)
947	{
948	/* very slow, but rare, check */
949	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
950	croak ("Coro::State object required");
951	}
952
953	mg = CORO_MAGIC (coro);
954	return (struct coro *)mg->mg_ptr;
955	}
956
957	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
958
959	static void	1385	static void
960	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)
961	{	1387	{
962	ta->prev = SvSTATE (prev_sv);	1388	ta->prev = SvSTATE (prev_sv);
963	ta->next = SvSTATE (next_sv);	1389	ta->next = SvSTATE (next_sv);
		1390	TRANSFER_CHECK (*ta);
964	}	1391	}
965		1392
966	static void	1393	static void
967	api_transfer (SV *prev_sv, SV *next_sv)	1394	api_transfer (SV *prev_sv, SV *next_sv)
968	{	1395	{
969	dTHX;	1396	dTHX;
970	struct transfer_args ta;	1397	struct transfer_args ta;
971		1398
972	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1399	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
973	TRANSFER (ta);	1400	TRANSFER (ta, 1);
974	}
975
976	static int
977	api_save (SV *coro_sv, int new_save)
978	{
979	dTHX;
980	struct coro *coro = SvSTATE (coro_sv);
981	int old_save = coro->save;
982
983	if (new_save >= 0)
984	coro->save = new_save;
985
986	return old_save;
987	}	1401	}
988		1402
989	/** Coro ********************************************************************/	1403	/** Coro ********************************************************************/
990		1404
991	static void	1405	static void
…		…
993	{	1407	{
994	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);
995	}	1409	}
996		1410
997	static SV *	1411	static SV *
998	coro_deq (pTHX_ int min_prio)	1412	coro_deq (pTHX)
999	{	1413	{
1000	int prio = PRIO_MAX - PRIO_MIN;	1414	int prio;
1001		1415
1002	min_prio -= PRIO_MIN;
1003	if (min_prio < 0)
1004	min_prio = 0;
1005
1006	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1416	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1007	if (AvFILLp (coro_ready [prio]) >= 0)	1417	if (AvFILLp (coro_ready [prio]) >= 0)
1008	return av_shift (coro_ready [prio]);	1418	return av_shift (coro_ready [prio]);
1009		1419
1010	return 0;	1420	return 0;
1011	}	1421	}
…		…
1013	static int	1423	static int
1014	api_ready (SV *coro_sv)	1424	api_ready (SV *coro_sv)
1015	{	1425	{
1016	dTHX;	1426	dTHX;
1017	struct coro *coro;	1427	struct coro *coro;
		1428	SV *sv_hook;
		1429	void (*xs_hook)(void);
1018		1430
1019	if (SvROK (coro_sv))	1431	if (SvROK (coro_sv))
1020	coro_sv = SvRV (coro_sv);	1432	coro_sv = SvRV (coro_sv);
1021		1433
1022	coro = SvSTATE (coro_sv);	1434	coro = SvSTATE (coro_sv);
…		…
1025	return 0;	1437	return 0;
1026		1438
1027	coro->flags |= CF_READY;	1439	coro->flags |= CF_READY;
1028		1440
1029	LOCK;	1441	LOCK;
		1442
		1443	sv_hook = coro_nready ? 0 : coro_readyhook;
		1444	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1445
1030	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1446	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1031	++coro_nready;	1447	++coro_nready;
		1448
1032	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 ();
1033		1469
1034	return 1;	1470	return 1;
1035	}	1471	}
1036		1472
1037	static int	1473	static int
…		…
1047	SV *prev_sv, *next_sv;	1483	SV *prev_sv, *next_sv;
1048		1484
1049	for (;;)	1485	for (;;)
1050	{	1486	{
1051	LOCK;	1487	LOCK;
1052	next_sv = coro_deq (aTHX_ PRIO_MIN);	1488	next_sv = coro_deq (aTHX);
1053		1489
1054	/* nothing to schedule: call the idle handler */	1490	/* nothing to schedule: call the idle handler */
1055	if (!next_sv)	1491	if (expect_false (!next_sv))
1056	{	1492	{
1057	dSP;	1493	dSP;
1058	UNLOCK;	1494	UNLOCK;
1059		1495
1060	ENTER;	1496	ENTER;
1061	SAVETMPS;	1497	SAVETMPS;
1062		1498
1063	PUSHMARK (SP);	1499	PUSHMARK (SP);
1064	PUTBACK;	1500	PUTBACK;
1065	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1501	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1502	SPAGAIN;
1066		1503
1067	FREETMPS;	1504	FREETMPS;
1068	LEAVE;	1505	LEAVE;
1069	continue;	1506	continue;
1070	}	1507	}
1071		1508
1072	ta->next = SvSTATE (next_sv);	1509	ta->next = SvSTATE (next_sv);
1073		1510
1074	/* cannot transfer to destroyed coros, skip and look for next */	1511	/* cannot transfer to destroyed coros, skip and look for next */
1075	if (ta->next->flags & CF_DESTROYED)	1512	if (expect_false (ta->next->flags & CF_DESTROYED))
1076	{	1513	{
1077	UNLOCK;	1514	UNLOCK;
1078	SvREFCNT_dec (next_sv);	1515	SvREFCNT_dec (next_sv);
1079	/* coro_nready is already taken care of by destroy */	1516	/* coro_nready is already taken care of by destroy */
1080	continue;	1517	continue;
…		…
1085	break;	1522	break;
1086	}	1523	}
1087		1524
1088	/* free this only after the transfer */	1525	/* free this only after the transfer */
1089	prev_sv = SvRV (coro_current);	1526	prev_sv = SvRV (coro_current);
1090	SvRV_set (coro_current, next_sv);
1091	ta->prev = SvSTATE (prev_sv);	1527	ta->prev = SvSTATE (prev_sv);
1092		1528	TRANSFER_CHECK (*ta);
1093	assert (ta->next->flags & CF_READY);	1529	assert (ta->next->flags & CF_READY);
1094	ta->next->flags &= ~CF_READY;	1530	ta->next->flags &= ~CF_READY;
		1531	SvRV_set (coro_current, next_sv);
1095		1532
1096	LOCK;	1533	LOCK;
1097	free_coro_mortal (aTHX);	1534	free_coro_mortal (aTHX);
1098	coro_mortal = prev_sv;	1535	coro_mortal = prev_sv;
1099	UNLOCK;	1536	UNLOCK;
…		…
1125	{	1562	{
1126	dTHX;	1563	dTHX;
1127	struct transfer_args ta;	1564	struct transfer_args ta;
1128		1565
1129	prepare_schedule (aTHX_ &ta);	1566	prepare_schedule (aTHX_ &ta);
1130	TRANSFER (ta);	1567	TRANSFER (ta, 1);
1131	}	1568	}
1132		1569
1133	static int	1570	static int
1134	api_cede (void)	1571	api_cede (void)
1135	{	1572	{
1136	dTHX;	1573	dTHX;
1137	struct transfer_args ta;	1574	struct transfer_args ta;
1138		1575
1139	prepare_cede (aTHX_ &ta);	1576	prepare_cede (aTHX_ &ta);
1140		1577
1141	if (ta.prev != ta.next)	1578	if (expect_true (ta.prev != ta.next))
1142	{	1579	{
1143	TRANSFER (ta);	1580	TRANSFER (ta, 1);
1144	return 1;	1581	return 1;
1145	}	1582	}
1146	else	1583	else
1147	return 0;	1584	return 0;
1148	}	1585	}
…		…
1153	dTHX;	1590	dTHX;
1154	struct transfer_args ta;	1591	struct transfer_args ta;
1155		1592
1156	if (prepare_cede_notself (aTHX_ &ta))	1593	if (prepare_cede_notself (aTHX_ &ta))
1157	{	1594	{
1158	TRANSFER (ta);	1595	TRANSFER (ta, 1);
1159	return 1;	1596	return 1;
1160	}	1597	}
1161	else	1598	else
1162	return 0;	1599	return 0;
1163	}	1600	}
1164		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
1165	MODULE = Coro::State PACKAGE = Coro::State	1644	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1166		1645
1167	PROTOTYPES: DISABLE	1646	PROTOTYPES: DISABLE
1168		1647
1169	BOOT:	1648	BOOT:
1170	{	1649	{
1171	#ifdef USE_ITHREADS	1650	#ifdef USE_ITHREADS
1172	MUTEX_INIT (&coro_mutex);	1651	MUTEX_INIT (&coro_mutex);
1173	#endif	1652	#endif
1174	BOOT_PAGESIZE;	1653	BOOT_PAGESIZE;
1175		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
1176	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1666	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1177		1667
1178	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1668	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1179	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1669	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1180	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1181	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1182	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1183	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1670	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1184	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1185		1672
1186	main_mainstack = PL_mainstack;	1673	main_mainstack = PL_mainstack;
1187	main_top_env = PL_top_env;	1674	main_top_env = PL_top_env;
1188		1675
1189	while (main_top_env->je_prev)	1676	while (main_top_env->je_prev)
1190	main_top_env = main_top_env->je_prev;	1677	main_top_env = main_top_env->je_prev;
1191		1678
1192	coroapi.ver = CORO_API_VERSION;	1679	coroapi.ver = CORO_API_VERSION;
		1680	coroapi.rev = CORO_API_REVISION;
1193	coroapi.transfer = api_transfer;	1681	coroapi.transfer = api_transfer;
1194		1682
1195	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1683	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1196	}	1684	}
1197		1685
1198	SV *	1686	SV *
1199	new (char *klass, ...)	1687	new (char *klass, ...)
1200	CODE:	1688	CODE:
1201	{	1689	{
1202	struct coro *coro;	1690	struct coro *coro;
		1691	MAGIC *mg;
1203	HV *hv;	1692	HV *hv;
1204	int i;	1693	int i;
1205		1694
1206	Newz (0, coro, 1, struct coro);	1695	Newz (0, coro, 1, struct coro);
1207	coro->args = newAV ();	1696	coro->args = newAV ();
1208	coro->save = CORO_SAVE_DEF;
1209	coro->flags = CF_NEW;	1697	coro->flags = CF_NEW;
1210		1698
		1699	if (coro_first) coro_first->prev = coro;
		1700	coro->next = coro_first;
		1701	coro_first = coro;
		1702
1211	hv = newHV ();	1703	coro->hv = hv = newHV ();
1212	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;
1213	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1706	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1214		1707
		1708	av_extend (coro->args, items - 1);
1215	for (i = 1; i < items; i++)	1709	for (i = 1; i < items; i++)
1216	av_push (coro->args, newSVsv (ST (i)));	1710	av_push (coro->args, newSVsv (ST (i)));
1217	}	1711	}
1218	OUTPUT:	1712	OUTPUT:
1219	RETVAL	1713	RETVAL
1220		1714
1221	int	1715	# these not obviously related functions are all rolled into the same xs
1222	save (SV *coro, int new_save = -1)	1716	# function to increase chances that they all will call transfer with the same
1223	CODE:	1717	# stack offset
1224	RETVAL = api_save (coro, new_save);
1225	OUTPUT:
1226	RETVAL
1227
1228	int
1229	save_also (SV *coro_sv, int save_also)
1230	CODE:
1231	{
1232	struct coro *coro = SvSTATE (coro_sv);
1233	RETVAL = coro->save;
1234	coro->save |= save_also;
1235	}
1236	OUTPUT:
1237	RETVAL
1238
1239	void	1718	void
1240	_set_stacklevel (...)	1719	_set_stacklevel (...)
1241	ALIAS:	1720	ALIAS:
1242	Coro::State::transfer = 1	1721	Coro::State::transfer = 1
1243	Coro::schedule = 2	1722	Coro::schedule = 2
…		…
1245	Coro::cede_notself = 4	1724	Coro::cede_notself = 4
1246	CODE:	1725	CODE:
1247	{	1726	{
1248	struct transfer_args ta;	1727	struct transfer_args ta;
1249		1728
		1729	PUTBACK;
1250	switch (ix)	1730	switch (ix)
1251	{	1731	{
1252	case 0:	1732	case 0:
1253	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1733	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1254	ta.next = 0;	1734	ta.next = 0;
…		…
1273	if (!prepare_cede_notself (aTHX_ &ta))	1753	if (!prepare_cede_notself (aTHX_ &ta))
1274	XSRETURN_EMPTY;	1754	XSRETURN_EMPTY;
1275		1755
1276	break;	1756	break;
1277	}	1757	}
		1758	SPAGAIN;
1278		1759
1279	BARRIER;	1760	BARRIER;
		1761	PUTBACK;
1280	TRANSFER (ta);	1762	TRANSFER (ta, 0);
1281		1763	SPAGAIN; /* might be the sp of a different coroutine now */
1282	if (GIMME_V != G_VOID && ta.next != ta.prev)	1764	/* be extra careful not to ever do anything after TRANSFER */
1283	XSRETURN_YES;
1284	}	1765	}
1285		1766
1286	bool	1767	bool
1287	_destroy (SV *coro_sv)	1768	_destroy (SV *coro_sv)
1288	CODE:	1769	CODE:
1289	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1770	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1290	OUTPUT:	1771	OUTPUT:
1291	RETVAL	1772	RETVAL
1292		1773
1293	void	1774	void
1294	_exit (code)	1775	_exit (int code)
1295	int code
1296	PROTOTYPE: $	1776	PROTOTYPE: $
1297	CODE:	1777	CODE:
1298	_exit (code);	1778	_exit (code);
1299		1779
1300	int	1780	int
…		…
1318	CODE:	1798	CODE:
1319	RETVAL = cctx_idle;	1799	RETVAL = cctx_idle;
1320	OUTPUT:	1800	OUTPUT:
1321	RETVAL	1801	RETVAL
1322		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
1323	MODULE = Coro::State PACKAGE = Coro	1934	MODULE = Coro::State PACKAGE = Coro
1324		1935
1325	BOOT:	1936	BOOT:
1326	{	1937	{
1327	int i;	1938	int i;
1328		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
1329	coro_stash = gv_stashpv ("Coro", TRUE);	1947	coro_stash = gv_stashpv ("Coro", TRUE);
1330		1948
1331	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1949	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1332	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1950	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1333	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1951	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1334	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1952	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1335	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1953	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1336	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1954	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1337		1955
1338	coro_current = get_sv ("Coro::current", FALSE);
1339	SvREADONLY_on (coro_current);
1340
1341	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1956	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1342	coro_ready[i] = newAV ();	1957	coro_ready[i] = newAV ();
1343		1958
1344	{	1959	{
1345	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 */
1346		1962
1347	coroapi.schedule = api_schedule;	1963	coroapi.schedule = api_schedule;
1348	coroapi.save = api_save;
1349	coroapi.cede = api_cede;	1964	coroapi.cede = api_cede;
1350	coroapi.cede_notself = api_cede_notself;	1965	coroapi.cede_notself = api_cede_notself;
1351	coroapi.ready = api_ready;	1966	coroapi.ready = api_ready;
1352	coroapi.is_ready = api_is_ready;	1967	coroapi.is_ready = api_is_ready;
1353	coroapi.nready = &coro_nready;	1968	coroapi.nready = &coro_nready;
…		…
1363	_set_current (SV *current)	1978	_set_current (SV *current)
1364	PROTOTYPE: $	1979	PROTOTYPE: $
1365	CODE:	1980	CODE:
1366	SvREFCNT_dec (SvRV (coro_current));	1981	SvREFCNT_dec (SvRV (coro_current));
1367	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;
1368		1992
1369	int	1993	int
1370	prio (Coro::State coro, int newprio = 0)	1994	prio (Coro::State coro, int newprio = 0)
1371	ALIAS:	1995	ALIAS:
1372	nice = 1	1996	nice = 1
…		…
1394	CODE:	2018	CODE:
1395	RETVAL = boolSV (api_ready (self));	2019	RETVAL = boolSV (api_ready (self));
1396	OUTPUT:	2020	OUTPUT:
1397	RETVAL	2021	RETVAL
1398		2022
1399	SV *
1400	is_ready (SV *self)
1401	PROTOTYPE: $
1402	CODE:
1403	RETVAL = boolSV (api_is_ready (self));
1404	OUTPUT:
1405	RETVAL
1406
1407	int	2023	int
1408	nready (...)	2024	nready (...)
1409	PROTOTYPE:	2025	PROTOTYPE:
1410	CODE:	2026	CODE:
1411	RETVAL = coro_nready;	2027	RETVAL = coro_nready;
1412	OUTPUT:	2028	OUTPUT:
1413	RETVAL	2029	RETVAL
1414		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
1415	MODULE = Coro::State PACKAGE = Coro::AIO	2153	MODULE = Coro::State PACKAGE = Coro::AIO
1416		2154
1417	SV *	2155	SV *
1418	_get_state ()	2156	_get_state ()
1419	CODE:	2157	CODE:
…		…
1444	PL_laststype = data->laststype;	2182	PL_laststype = data->laststype;
1445	PL_laststatval = data->laststatval;	2183	PL_laststatval = data->laststatval;
1446	PL_statcache = data->statcache;	2184	PL_statcache = data->statcache;
1447	}	2185	}
1448		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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