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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.154 by root, Fri Sep 21 01:08:06 2007 UTC vs.
Revision 1.245 by root, Mon Sep 22 05:40:21 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;
193		254
194	/* linked list */	255	/* linked list */
195	struct coro *next, *prev;	256	struct coro *next, *prev;
196	HV *hv; /* the perl hash associated with this coro, if any */
197	};	257	};
198		258
199	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
200	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
201		261
…		…
208	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
209	#define PRIO_MIN -4	269	#define PRIO_MIN -4
210		270
211	/* for Coro.pm */	271	/* for Coro.pm */
212	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214	static int coro_nready;	275	static int coro_nready;
215	static struct coro *coro_first;	276	static struct coro *coro_first;
216		277
217	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
218		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	}
		309
219	static AV *	310	static AV *
220	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
221	{	312	{
222	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
223	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
224		315
225	newpadlist = newAV ();	316	newpadlist = newAV ();
226	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
227	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
228	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229	#else	320	#else
230	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231	#endif	322	#endif
232	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
270		361
271	/* casting is fun. */	362	/* casting is fun. */
272	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	363	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273	free_padlist (aTHX_ padlist);	364	free_padlist (aTHX_ padlist);
274		365
275	SvREFCNT_dec (av);	366	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276		367
277	return 0;	368	return 0;
278	}	369	}
279		370
280	#define PERL_MAGIC_coro PERL_MAGIC_ext	371	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		372	#define CORO_MAGIC_type_state PERL_MAGIC_ext
281		373
282	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	374	static MGVTBL coro_cv_vtbl = {
		375	0, 0, 0, 0,
		376	coro_cv_free
		377	};
283		378
284	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
285	SvMAGIC (cv) \	380	SvMAGIC (sv) \
286	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
287	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
289	: 0	384	: 0
		385
		386	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		387	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		388
		389	static struct coro *
		390	SvSTATE_ (pTHX_ SV *coro)
		391	{
		392	HV *stash;
		393	MAGIC *mg;
		394
		395	if (SvROK (coro))
		396	coro = SvRV (coro);
		397
		398	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		399	croak ("Coro::State object required");
		400
		401	stash = SvSTASH (coro);
		402	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		403	{
		404	/* very slow, but rare, check */
		405	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		406	croak ("Coro::State object required");
		407	}
		408
		409	mg = CORO_MAGIC_state (coro);
		410	return (struct coro *)mg->mg_ptr;
		411	}
		412
		413	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
290		414
291	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
292	static void	416	static void
293	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
294	{	418	{
295	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
296	AV *av;	420	AV *av;
297		421
298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300	else	424	else
301	{	425	{
302	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
303	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
304	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
305	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
306	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
307	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
308	#else	433	#else
…		…
312	}	437	}
313		438
314	static void	439	static void
315	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
316	{	441	{
317	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
318	AV *av;	443	AV *av;
319		444
320	if (!mg)	445	if (expect_false (!mg))
321	{	446	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324	mg->mg_virtual = &vtbl_coro;
325	mg->mg_obj = (SV *)newAV ();
326	}
327		447
328	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
329		449
330	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
331	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
332		452
333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334	}	454	}
335		455
336	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
337
338	#define SB do {
339	#define SE } while (0)
340
341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342		457
343	static void	458	static void
344	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
345	{	460	{
		461	perl_slots *slot = c->slot;
		462	c->slot = 0;
		463
		464	PL_mainstack = c->mainstack;
		465
		466	GvSV (PL_defgv) = slot->defsv;
		467	GvAV (PL_defgv) = slot->defav;
		468	GvSV (PL_errgv) = slot->errsv;
		469	GvSV (irsgv) = slot->irsgv;
		470
346	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
347	# include "state.h"	472	# include "state.h"
348	#undef VAR	473	#undef VAR
349
350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355	if (c->irssv)
356	{
357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358	{
359	SvREFCNT_dec (c->irssv);
360	c->irssv = 0;
361	}
362	else
363	{
364	REPLACE_SV (PL_rs, c->irssv);
365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366	sv_setsv (c->irssv_sv, PL_rs);
367	}
368	}
369		474
370	{	475	{
371	dSP;	476	dSP;
		477
372	CV *cv;	478	CV *cv;
373		479
374	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
375	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
376	{	482	{
377	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
378	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
379	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
380	}	486	}
…		…
395	/*	501	/*
396	* the worst thing you can imagine happens first - we have to save	502	* the worst thing you can imagine happens first - we have to save
397	* (and reinitialize) all cv's in the whole callchain :(	503	* (and reinitialize) all cv's in the whole callchain :(
398	*/	504	*/
399		505
400	EXTEND (SP, 3 + 1);
401	PUSHs (Nullsv);	506	XPUSHs (Nullsv);
402	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
403	for (;;)	508	for (;;)
404	{	509	{
405	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
406	{	511	{
407	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
408		513
409	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410	{	515	{
411	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
412		517
413	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
414	{	519	{
415	EXTEND (SP, 3);	520	EXTEND (SP, 3);
416	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
419		524
420	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
421	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
422	}	527	}
423	}	528	}
424	}	529	}
425		530
426	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
427	break;	532	break;
428		533
429	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
430	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
431	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
432	}	537	}
433		538
434	PUTBACK;	539	PUTBACK;
435	}	540	}
436		541
437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	542	/* allocate some space on the context stack for our purposes */
438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	543	/* we manually unroll here, as usually 2 slots is enough */
439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	544	if (SLOT_COUNT >= 1) CXINC;
440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	545	if (SLOT_COUNT >= 2) CXINC;
441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	546	if (SLOT_COUNT >= 3) CXINC;
		547	{
		548	int i;
		549	for (i = 3; i < SLOT_COUNT; ++i)
		550	CXINC;
		551	}
		552	cxstack_ix -= SLOT_COUNT; /* undo allocation */
442		553
		554	c->mainstack = PL_mainstack;
		555
		556	{
		557	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		558
		559	slot->defav = GvAV (PL_defgv);
		560	slot->defsv = DEFSV;
		561	slot->errsv = ERRSV;
		562	slot->irsgv = GvSV (irsgv);
		563
443	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
444	# include "state.h"	565	# include "state.h"
445	#undef VAR	566	#undef VAR
		567	}
446	}	568	}
447		569
448	/*	570	/*
449	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
450	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
455	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
456	#else	578	#else
457	static void	579	static void
458	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
459	{	581	{
460	PL_curstackinfo = new_stackinfo(64, 4);	582	PL_curstackinfo = new_stackinfo(32, 8);
461	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
462	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464		586
465	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
466	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468		590
469	New(50,PL_tmps_stack,64,SV*);	591	New(50,PL_tmps_stack,32,SV*);
470	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
471	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
472	PL_tmps_max = 64;	594	PL_tmps_max = 32;
473		595
474	New(54,PL_markstack,16,I32);	596	New(54,PL_markstack,16,I32);
475	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
476	PL_markstack_max = PL_markstack + 16;	598	PL_markstack_max = PL_markstack + 16;
477		599
478	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
479	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
480	#endif	602	#endif
481		603
482	New(54,PL_scopestack,16,I32);	604	New(54,PL_scopestack,8,I32);
483	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
484	PL_scopestack_max = 16;	606	PL_scopestack_max = 8;
485		607
486	New(54,PL_savestack,32,ANY);	608	New(54,PL_savestack,24,ANY);
487	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
488	PL_savestack_max = 32;	610	PL_savestack_max = 24;
489		611
490	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
491	New(54,PL_retstack,8,OP*);	613	New(54,PL_retstack,4,OP*);
492	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
493	PL_retstack_max = 8;	615	PL_retstack_max = 4;
494	#endif	616	#endif
495	}	617	}
496	#endif	618	#endif
497		619
498	/*	620	/*
499	* destroy the stacks, the callchain etc...	621	* destroy the stacks, the callchain etc...
500	*/	622	*/
501	static void	623	static void
502	coro_destroy_stacks (pTHX)	624	coro_destroy_stacks (pTHX)
503	{	625	{
504	if (!IN_DESTRUCT)
505	{
506	/* restore all saved variables and stuff */
507	LEAVE_SCOPE (0);
508	assert (PL_tmps_floor == -1);
509
510	/* free all temporaries */
511	FREETMPS;
512	assert (PL_tmps_ix == -1);
513
514	/* unwind all extra stacks */
515	POPSTACK_TO (PL_mainstack);
516
517	/* unwind main stack */
518	dounwind (-1);
519	}
520
521	while (PL_curstackinfo->si_next)	626	while (PL_curstackinfo->si_next)
522	PL_curstackinfo = PL_curstackinfo->si_next;	627	PL_curstackinfo = PL_curstackinfo->si_next;
523		628
524	while (PL_curstackinfo)	629	while (PL_curstackinfo)
525	{	630	{
…		…
535		640
536	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
537	Safefree (PL_markstack);	642	Safefree (PL_markstack);
538	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
539	Safefree (PL_savestack);	644	Safefree (PL_savestack);
540	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
541	Safefree (PL_retstack);	646	Safefree (PL_retstack);
542	#endif	647	#endif
543	}	648	}
544		649
545	static size_t	650	static size_t
546	coro_rss (struct coro *coro)	651	coro_rss (pTHX_ struct coro *coro)
547	{	652	{
548	size_t rss = sizeof (coro);	653	size_t rss = sizeof (*coro);
549		654
550	if (coro->mainstack)	655	if (coro->mainstack)
551	{	656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
552	if (coro->flags & CF_RUNNING)	660	if (coro->flags & CF_RUNNING)
553	{	661	{
		662	slot = &tmp_slot;
		663
554	#define VAR(name,type)coro->name = PL_ ## name;	664	#define VAR(name,type) slot->name = PL_ ## name;
555	# include "state.h"	665	# include "state.h"
556	#undef VAR	666	#undef VAR
557	}	667	}
		668	else
		669	slot = coro->slot;
558		670
		671	if (slot)
		672	{
559	rss += sizeof (coro->curstackinfo);	673	rss += sizeof (slot->curstackinfo);
560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
561	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	674	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
562	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	675	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
563	rss += coro->tmps_max * sizeof (SV *);	676	rss += slot->tmps_max * sizeof (SV *);
564	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	677	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
565	rss += coro->scopestack_max * sizeof (I32);	678	rss += slot->scopestack_max * sizeof (I32);
566	rss += coro->savestack_max * sizeof (ANY);	679	rss += slot->savestack_max * sizeof (ANY);
567		680
568	#if !PERL_VERSION_ATLEAST (5,9,0)	681	#if !PERL_VERSION_ATLEAST (5,10,0)
569	rss += coro->retstack_max * sizeof (OP *);	682	rss += slot->retstack_max * sizeof (OP *);
570	#endif	683	#endif
		684	}
571	}	685	}
572		686
573	return rss;	687	return rss;
574	}	688	}
575		689
576	/** coroutine stack handling ************************************************/	690	/** coroutine stack handling ************************************************/
577		691
		692	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		693	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		694	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		695
		696	/* apparently < 5.8.8 */
		697	#ifndef MgPV_nolen_const
		698	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		699	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		700	(const char*)(mg)->mg_ptr)
		701	#endif
		702
		703	/*
		704	* This overrides the default magic get method of %SIG elements.
		705	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		706	* and instead of tryign to save and restore the hash elements, we just provide
		707	* readback here.
		708	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		709	* not expecting this to actually change the hook. This is a potential problem
		710	* when a schedule happens then, but we ignore this.
		711	*/
		712	static int
		713	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		714	{
		715	const char *s = MgPV_nolen_const (mg);
		716
		717	if (*s == '_')
		718	{
		719	SV **svp = 0;
		720
		721	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		722	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		723
		724	if (svp)
		725	{
		726	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		727	return 0;
		728	}
		729	}
		730
		731	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		732	}
		733
		734	static int
		735	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		736	{
		737	const char *s = MgPV_nolen_const (mg);
		738
		739	if (*s == '_')
		740	{
		741	SV **svp = 0;
		742
		743	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		744	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		745
		746	if (svp)
		747	{
		748	SV *old = *svp;
		749	*svp = 0;
		750	SvREFCNT_dec (old);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = newSVsv (sv);
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		780	}
		781
578	static void	782	static void
579	setup_coro (pTHX_ struct coro *coro)	783	coro_setup (pTHX_ struct coro *coro)
580	{	784	{
581	/*	785	/*
582	* emulate part of the perl startup here.	786	* emulate part of the perl startup here.
583	*/	787	*/
584	coro_init_stacks (aTHX);	788	coro_init_stacks (aTHX);
585		789
		790	PL_runops = RUNOPS_DEFAULT;
586	PL_curcop = &PL_compiling;	791	PL_curcop = &PL_compiling;
587	PL_in_eval = EVAL_NULL;	792	PL_in_eval = EVAL_NULL;
588	PL_comppad = 0;	793	PL_comppad = 0;
589	PL_curpm = 0;	794	PL_curpm = 0;
		795	PL_curpad = 0;
590	PL_localizing = 0;	796	PL_localizing = 0;
591	PL_dirty = 0;	797	PL_dirty = 0;
592	PL_restartop = 0;	798	PL_restartop = 0;
		799	#if PERL_VERSION_ATLEAST (5,10,0)
		800	PL_parser = 0;
		801	#endif
		802
		803	/* recreate the die/warn hooks */
		804	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		805	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		806
		807	GvSV (PL_defgv) = newSV (0);
		808	GvAV (PL_defgv) = coro->args; coro->args = 0;
		809	GvSV (PL_errgv) = newSV (0);
		810	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		811	PL_rs = newSVsv (GvSV (irsgv));
		812	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
593		813
594	{	814	{
595	dSP;	815	dSP;
596	LOGOP myop;	816	LOGOP myop;
597		817
598	SvREFCNT_dec (GvAV (PL_defgv));
599	GvAV (PL_defgv) = coro->args; coro->args = 0;
600
601	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
602	myop.op_next = Nullop;	819	myop.op_next = Nullop;
603	myop.op_flags = OPf_WANT_VOID;	820	myop.op_flags = OPf_WANT_VOID;
604		821
605	PUSHMARK (SP);	822	PUSHMARK (SP);
606	XPUSHs (av_shift (GvAV (PL_defgv)));	823	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
607	PUTBACK;	824	PUTBACK;
608	PL_op = (OP *)&myop;	825	PL_op = (OP *)&myop;
609	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	826	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
610	SPAGAIN;	827	SPAGAIN;
611	}	828	}
612		829
613	ENTER; /* necessary e.g. for dounwind */	830	/* this newly created coroutine might be run on an existing cctx which most
		831	* likely was suspended in set_stacklevel, called from entersub.
		832	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		833	* so we ENTER here for symmetry
		834	*/
		835	ENTER;
		836	}
		837
		838	static void
		839	coro_destroy (pTHX_ struct coro *coro)
		840	{
		841	if (!IN_DESTRUCT)
		842	{
		843	/* restore all saved variables and stuff */
		844	LEAVE_SCOPE (0);
		845	assert (PL_tmps_floor == -1);
		846
		847	/* free all temporaries */
		848	FREETMPS;
		849	assert (PL_tmps_ix == -1);
		850
		851	/* unwind all extra stacks */
		852	POPSTACK_TO (PL_mainstack);
		853
		854	/* unwind main stack */
		855	dounwind (-1);
		856	}
		857
		858	SvREFCNT_dec (GvSV (PL_defgv));
		859	SvREFCNT_dec (GvAV (PL_defgv));
		860	SvREFCNT_dec (GvSV (PL_errgv));
		861	SvREFCNT_dec (PL_defoutgv);
		862	SvREFCNT_dec (PL_rs);
		863	SvREFCNT_dec (GvSV (irsgv));
		864
		865	SvREFCNT_dec (PL_diehook);
		866	SvREFCNT_dec (PL_warnhook);
		867
		868	SvREFCNT_dec (coro->saved_deffh);
		869	SvREFCNT_dec (coro->throw);
		870
		871	coro_destroy_stacks (aTHX);
614	}	872	}
615		873
616	static void	874	static void
617	free_coro_mortal (pTHX)	875	free_coro_mortal (pTHX)
618	{	876	{
619	if (coro_mortal)	877	if (expect_true (coro_mortal))
620	{	878	{
621	SvREFCNT_dec (coro_mortal);	879	SvREFCNT_dec (coro_mortal);
622	coro_mortal = 0;	880	coro_mortal = 0;
623	}	881	}
		882	}
		883
		884	static int
		885	runops_trace (pTHX)
		886	{
		887	COP *oldcop = 0;
		888	int oldcxix = -2;
		889	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		890	coro_cctx *cctx = coro->cctx;
		891
		892	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		893	{
		894	PERL_ASYNC_CHECK ();
		895
		896	if (cctx->flags & CC_TRACE_ALL)
		897	{
		898	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		899	{
		900	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		901	SV **bot, **top;
		902	AV *av = newAV (); /* return values */
		903	SV **cb;
		904	dSP;
		905
		906	GV *gv = CvGV (cx->blk_sub.cv);
		907	SV *fullname = sv_2mortal (newSV (0));
		908	if (isGV (gv))
		909	gv_efullname3 (fullname, gv, 0);
		910
		911	bot = PL_stack_base + cx->blk_oldsp + 1;
		912	top = cx->blk_gimme == G_ARRAY ? SP + 1
		913	: cx->blk_gimme == G_SCALAR ? bot + 1
		914	: bot;
		915
		916	av_extend (av, top - bot);
		917	while (bot < top)
		918	av_push (av, SvREFCNT_inc (*bot++));
		919
		920	PL_runops = RUNOPS_DEFAULT;
		921	ENTER;
		922	SAVETMPS;
		923	EXTEND (SP, 3);
		924	PUSHMARK (SP);
		925	PUSHs (&PL_sv_no);
		926	PUSHs (fullname);
		927	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		928	PUTBACK;
		929	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		930	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		931	SPAGAIN;
		932	FREETMPS;
		933	LEAVE;
		934	PL_runops = runops_trace;
		935	}
		936
		937	if (oldcop != PL_curcop)
		938	{
		939	oldcop = PL_curcop;
		940
		941	if (PL_curcop != &PL_compiling)
		942	{
		943	SV **cb;
		944
		945	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		946	{
		947	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		948
		949	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		950	{
		951	runops_proc_t old_runops = PL_runops;
		952	dSP;
		953	GV *gv = CvGV (cx->blk_sub.cv);
		954	SV *fullname = sv_2mortal (newSV (0));
		955
		956	if (isGV (gv))
		957	gv_efullname3 (fullname, gv, 0);
		958
		959	PL_runops = RUNOPS_DEFAULT;
		960	ENTER;
		961	SAVETMPS;
		962	EXTEND (SP, 3);
		963	PUSHMARK (SP);
		964	PUSHs (&PL_sv_yes);
		965	PUSHs (fullname);
		966	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		967	PUTBACK;
		968	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		969	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		970	SPAGAIN;
		971	FREETMPS;
		972	LEAVE;
		973	PL_runops = runops_trace;
		974	}
		975
		976	oldcxix = cxstack_ix;
		977	}
		978
		979	if (cctx->flags & CC_TRACE_LINE)
		980	{
		981	dSP;
		982
		983	PL_runops = RUNOPS_DEFAULT;
		984	ENTER;
		985	SAVETMPS;
		986	EXTEND (SP, 3);
		987	PL_runops = RUNOPS_DEFAULT;
		988	PUSHMARK (SP);
		989	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		990	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		991	PUTBACK;
		992	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		993	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		994	SPAGAIN;
		995	FREETMPS;
		996	LEAVE;
		997	PL_runops = runops_trace;
		998	}
		999	}
		1000	}
		1001	}
		1002	}
		1003
		1004	TAINT_NOT;
		1005	return 0;
624	}	1006	}
625		1007
626	/* inject a fake call to Coro::State::_cctx_init into the execution */	1008	/* inject a fake call to Coro::State::_cctx_init into the execution */
627	/* _cctx_init should be careful, as it could be called at almost any time */	1009	/* _cctx_init should be careful, as it could be called at almost any time */
628	/* during execution of a perl program */	1010	/* during execution of a perl program */
629	static void NOINLINE	1011	static void NOINLINE
630	prepare_cctx (pTHX_ coro_cctx *cctx)	1012	cctx_prepare (pTHX_ coro_cctx *cctx)
631	{	1013	{
632	dSP;	1014	dSP;
633	LOGOP myop;	1015	LOGOP myop;
		1016
		1017	PL_top_env = &PL_start_env;
		1018
		1019	if (cctx->flags & CC_TRACE)
		1020	PL_runops = runops_trace;
634		1021
635	Zero (&myop, 1, LOGOP);	1022	Zero (&myop, 1, LOGOP);
636	myop.op_next = PL_op;	1023	myop.op_next = PL_op;
637	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1024	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
638		1025
…		…
648		1035
649	/*	1036	/*
650	* this is a _very_ stripped down perl interpreter ;)	1037	* this is a _very_ stripped down perl interpreter ;)
651	*/	1038	*/
652	static void	1039	static void
653	coro_run (void *arg)	1040	cctx_run (void *arg)
654	{	1041	{
655	dTHX;	1042	dTHX;
656		1043
657	/* coro_run is the alternative tail of transfer(), so unlock here. */	1044	/* cctx_run is the alternative tail of transfer(), so unlock here. */
658	UNLOCK;	1045	UNLOCK;
659		1046
660	PL_top_env = &PL_start_env;	1047	/* we now skip the entersub that lead to transfer() */
		1048	PL_op = PL_op->op_next;
661		1049
662	/* inject a fake subroutine call to cctx_init */	1050	/* inject a fake subroutine call to cctx_init */
663	prepare_cctx (aTHX_ (coro_cctx *)arg);	1051	cctx_prepare (aTHX_ (coro_cctx *)arg);
664		1052
665	/* somebody or something will hit me for both perl_run and PL_restartop */	1053	/* somebody or something will hit me for both perl_run and PL_restartop */
666	PL_restartop = PL_op;	1054	PL_restartop = PL_op;
667	perl_run (PL_curinterp);	1055	perl_run (PL_curinterp);
668		1056
…		…
687	++cctx_count;	1075	++cctx_count;
688		1076
689	Newz (0, cctx, 1, coro_cctx);	1077	Newz (0, cctx, 1, coro_cctx);
690		1078
691	#if HAVE_MMAP	1079	#if HAVE_MMAP
692
693	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1080	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
694	/* mmap supposedly does allocate-on-write for us */	1081	/* mmap supposedly does allocate-on-write for us */
695	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1082	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
696		1083
697	if (cctx->sptr != (void *)-1)	1084	if (cctx->sptr != (void *)-1)
…		…
699	# if CORO_STACKGUARD	1086	# if CORO_STACKGUARD
700	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1087	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
701	# endif	1088	# endif
702	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1089	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
703	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1090	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
704	cctx->mapped = 1;	1091	cctx->flags |= CC_MAPPED;
705	}	1092	}
706	else	1093	else
707	#endif	1094	#endif
708	{	1095	{
709	cctx->ssize = coro_stacksize * (long)sizeof (long);	1096	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
718	stack_start = cctx->sptr;	1105	stack_start = cctx->sptr;
719	stack_size = cctx->ssize;	1106	stack_size = cctx->ssize;
720	}	1107	}
721		1108
722	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1109	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
723	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1110	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
724		1111
725	return cctx;	1112	return cctx;
726	}	1113	}
727		1114
728	static void	1115	static void
…		…
736	#if CORO_USE_VALGRIND	1123	#if CORO_USE_VALGRIND
737	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1124	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
738	#endif	1125	#endif
739		1126
740	#if HAVE_MMAP	1127	#if HAVE_MMAP
741	if (cctx->mapped)	1128	if (cctx->flags & CC_MAPPED)
742	munmap (cctx->sptr, cctx->ssize);	1129	munmap (cctx->sptr, cctx->ssize);
743	else	1130	else
744	#endif	1131	#endif
745	Safefree (cctx->sptr);	1132	Safefree (cctx->sptr);
746		1133
747	Safefree (cctx);	1134	Safefree (cctx);
748	}	1135	}
749		1136
		1137	/* wether this cctx should be destructed */
		1138	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1139
750	static coro_cctx *	1140	static coro_cctx *
751	cctx_get (pTHX)	1141	cctx_get (pTHX)
752	{	1142	{
753	while (cctx_first)	1143	while (expect_true (cctx_first))
754	{	1144	{
755	coro_cctx *cctx = cctx_first;	1145	coro_cctx *cctx = cctx_first;
756	cctx_first = cctx->next;	1146	cctx_first = cctx->next;
757	--cctx_idle;	1147	--cctx_idle;
758		1148
759	if (cctx->ssize >= coro_stacksize)	1149	if (expect_true (!CCTX_EXPIRED (cctx)))
760	return cctx;	1150	return cctx;
761		1151
762	cctx_destroy (cctx);	1152	cctx_destroy (cctx);
763	}	1153	}
764		1154
765	PL_op = PL_op->op_next;
766	return cctx_new ();	1155	return cctx_new ();
767	}	1156	}
768		1157
769	static void	1158	static void
770	cctx_put (coro_cctx *cctx)	1159	cctx_put (coro_cctx *cctx)
771	{	1160	{
772	/* free another cctx if overlimit */	1161	/* free another cctx if overlimit */
773	if (cctx_idle >= MAX_IDLE_CCTX)	1162	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
774	{	1163	{
775	coro_cctx *first = cctx_first;	1164	coro_cctx *first = cctx_first;
776	cctx_first = first->next;	1165	cctx_first = first->next;
777	--cctx_idle;	1166	--cctx_idle;
778		1167
779	assert (!first->inuse);
780	cctx_destroy (first);	1168	cctx_destroy (first);
781	}	1169	}
782		1170
783	++cctx_idle;	1171	++cctx_idle;
784	cctx->next = cctx_first;	1172	cctx->next = cctx_first;
785	cctx_first = cctx;	1173	cctx_first = cctx;
786	}	1174	}
787		1175
788	/** coroutine switching *****************************************************/	1176	/** coroutine switching *****************************************************/
789		1177
790	/* never call directly, always through the coro_state_transfer global variable */	1178	static void
		1179	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1180	{
		1181	if (expect_true (prev != next))
		1182	{
		1183	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1184	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1185
		1186	if (expect_false (next->flags & CF_RUNNING))
		1187	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1188
		1189	if (expect_false (next->flags & CF_DESTROYED))
		1190	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1191
		1192	#if !PERL_VERSION_ATLEAST (5,10,0)
		1193	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1194	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1195	#endif
		1196	}
		1197	}
		1198
		1199	/* always use the TRANSFER macro */
791	static void NOINLINE	1200	static void NOINLINE
792	transfer (pTHX_ struct coro *prev, struct coro *next)	1201	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
793	{	1202	{
794	dSTACKLEVEL;	1203	dSTACKLEVEL;
		1204	static volatile int has_throw;
795		1205
796	/* sometimes transfer is only called to set idle_sp */	1206	/* sometimes transfer is only called to set idle_sp */
797	if (!next)	1207	if (expect_false (!next))
798	{	1208	{
799	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1209	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
800	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1210	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
801	}	1211	}
802	else if (prev != next)	1212	else if (expect_true (prev != next))
803	{	1213	{
804	coro_cctx *prev__cctx;	1214	coro_cctx *prev__cctx;
805		1215
806	if (prev->flags & CF_NEW)	1216	if (expect_false (prev->flags & CF_NEW))
807	{	1217	{
808	/* create a new empty context */	1218	/* create a new empty context */
809	Newz (0, prev->cctx, 1, coro_cctx);	1219	Newz (0, prev->cctx, 1, coro_cctx);
810	prev->cctx->inuse = 1;
811	prev->flags &= ~CF_NEW;	1220	prev->flags &= ~CF_NEW;
812	prev->flags |= CF_RUNNING;	1221	prev->flags |= CF_RUNNING;
813	}	1222	}
814		1223
815	/*TODO: must not croak here */
816	if (!prev->flags & CF_RUNNING)
817	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
818
819	if (next->flags & CF_RUNNING)
820	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
821
822	if (next->flags & CF_DESTROYED)
823	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
824
825	prev->flags &= ~CF_RUNNING;	1224	prev->flags &= ~CF_RUNNING;
826	next->flags |= CF_RUNNING;	1225	next->flags |= CF_RUNNING;
827		1226
828	LOCK;	1227	LOCK;
829		1228
		1229	/* first get rid of the old state */
		1230	save_perl (aTHX_ prev);
		1231
830	if (next->flags & CF_NEW)	1232	if (expect_false (next->flags & CF_NEW))
831	{	1233	{
832	/* need to start coroutine */	1234	/* need to start coroutine */
833	next->flags &= ~CF_NEW;	1235	next->flags &= ~CF_NEW;
834	/* first get rid of the old state */
835	save_perl (aTHX_ prev);
836	/* setup coroutine call */	1236	/* setup coroutine call */
837	setup_coro (aTHX_ next);	1237	coro_setup (aTHX_ next);
838	/* need a new stack */
839	assert (!next->cctx);
840	}	1238	}
841	else	1239	else
842	{
843	/* coroutine already started */
844	save_perl (aTHX_ prev);
845	load_perl (aTHX_ next);	1240	load_perl (aTHX_ next);
846	}
847		1241
848	prev__cctx = prev->cctx;	1242	prev__cctx = prev->cctx;
849		1243
850	/* possibly "free" the cctx */	1244	/* possibly "free" the cctx */
		1245	if (expect_true (
851	if (prev__cctx->idle_sp == STACKLEVEL)	1246	prev__cctx->idle_sp == STACKLEVEL
		1247	&& !(prev__cctx->flags & CC_TRACE)
		1248	&& !force_cctx
		1249	))
852	{	1250	{
853	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1251	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
854	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1252	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
855		1253
856	prev->cctx = 0;	1254	prev->cctx = 0;
857		1255
		1256	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1257	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1258	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1259	if (!next->cctx)
		1260	next->cctx = cctx_get (aTHX);
		1261
858	cctx_put (prev__cctx);	1262	cctx_put (prev__cctx);
859	prev__cctx->inuse = 0;
860	}	1263	}
861		1264
		1265	++next->usecount;
		1266
862	if (!next->cctx)	1267	if (expect_true (!next->cctx))
863	{
864	next->cctx = cctx_get (aTHX);	1268	next->cctx = cctx_get (aTHX);
865	assert (!next->cctx->inuse);
866	next->cctx->inuse = 1;
867	}
868		1269
		1270	has_throw = !!next->throw;
		1271
869	if (prev__cctx != next->cctx)	1272	if (expect_false (prev__cctx != next->cctx))
870	{	1273	{
871	prev__cctx->top_env = PL_top_env;	1274	prev__cctx->top_env = PL_top_env;
872	PL_top_env = next->cctx->top_env;	1275	PL_top_env = next->cctx->top_env;
873	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1276	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
874	}	1277	}
875		1278
876	free_coro_mortal (aTHX);	1279	free_coro_mortal (aTHX);
877	UNLOCK;	1280	UNLOCK;
		1281
		1282	if (expect_false (has_throw))
		1283	{
		1284	struct coro *coro = SvSTATE (coro_current);
		1285
		1286	if (coro->throw)
		1287	{
		1288	SV *exception = coro->throw;
		1289	coro->throw = 0;
		1290	sv_setsv (ERRSV, exception);
		1291	croak (0);
		1292	}
		1293	}
878	}	1294	}
879	}	1295	}
880		1296
881	struct transfer_args	1297	struct transfer_args
882	{	1298	{
883	struct coro *prev, *next;	1299	struct coro *prev, *next;
884	};	1300	};
885		1301
		1302	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
886	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1303	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
887		1304
888	/** high level stuff ********************************************************/	1305	/** high level stuff ********************************************************/
889		1306
890	static int	1307	static int
891	coro_state_destroy (pTHX_ struct coro *coro)	1308	coro_state_destroy (pTHX_ struct coro *coro)
…		…
908		1325
909	if (coro->mainstack && coro->mainstack != main_mainstack)	1326	if (coro->mainstack && coro->mainstack != main_mainstack)
910	{	1327	{
911	struct coro temp;	1328	struct coro temp;
912		1329
913	assert (!(coro->flags & CF_RUNNING));
914
915	Zero (&temp, 1, struct coro);
916	temp.save = CORO_SAVE_ALL;
917
918	if (coro->flags & CF_RUNNING)	1330	if (coro->flags & CF_RUNNING)
919	croak ("FATAL: tried to destroy currently running coroutine");	1331	croak ("FATAL: tried to destroy currently running coroutine");
920		1332
921	save_perl (aTHX_ &temp);	1333	save_perl (aTHX_ &temp);
922	load_perl (aTHX_ coro);	1334	load_perl (aTHX_ coro);
923		1335
924	coro_destroy_stacks (aTHX);	1336	coro_destroy (aTHX_ coro);
925		1337
926	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1338	load_perl (aTHX_ &temp);
927		1339
928	coro->mainstack = 0;	1340	coro->slot = 0;
929	}	1341	}
930		1342
931	cctx_destroy (coro->cctx);	1343	cctx_destroy (coro->cctx);
932	SvREFCNT_dec (coro->args);	1344	SvREFCNT_dec (coro->args);
933		1345
…		…
974	#else	1386	#else
975	# define MGf_DUP 0	1387	# define MGf_DUP 0
976	#endif	1388	#endif
977	};	1389	};
978		1390
979	static struct coro *
980	SvSTATE_ (pTHX_ SV *coro)
981	{
982	HV *stash;
983	MAGIC *mg;
984
985	if (SvROK (coro))
986	coro = SvRV (coro);
987
988	stash = SvSTASH (coro);
989	if (stash != coro_stash && stash != coro_state_stash)
990	{
991	/* very slow, but rare, check */
992	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
993	croak ("Coro::State object required");
994	}
995
996	mg = CORO_MAGIC (coro);
997	return (struct coro *)mg->mg_ptr;
998	}
999
1000	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1001
1002	static void	1391	static void
1003	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1392	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1004	{	1393	{
1005	ta->prev = SvSTATE (prev_sv);	1394	ta->prev = SvSTATE (prev_sv);
1006	ta->next = SvSTATE (next_sv);	1395	ta->next = SvSTATE (next_sv);
		1396	TRANSFER_CHECK (*ta);
1007	}	1397	}
1008		1398
1009	static void	1399	static void
1010	api_transfer (SV *prev_sv, SV *next_sv)	1400	api_transfer (SV *prev_sv, SV *next_sv)
1011	{	1401	{
1012	dTHX;	1402	dTHX;
1013	struct transfer_args ta;	1403	struct transfer_args ta;
1014		1404
1015	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1405	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1016	TRANSFER (ta);	1406	TRANSFER (ta, 1);
1017	}
1018
1019	static int
1020	api_save (SV *coro_sv, int new_save)
1021	{
1022	dTHX;
1023	struct coro *coro = SvSTATE (coro_sv);
1024	int old_save = coro->save;
1025
1026	if (new_save >= 0)
1027	coro->save = new_save;
1028
1029	return old_save;
1030	}	1407	}
1031		1408
1032	/** Coro ********************************************************************/	1409	/** Coro ********************************************************************/
1033		1410
1034	static void	1411	static void
…		…
1036	{	1413	{
1037	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1414	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1038	}	1415	}
1039		1416
1040	static SV *	1417	static SV *
1041	coro_deq (pTHX_ int min_prio)	1418	coro_deq (pTHX)
1042	{	1419	{
1043	int prio = PRIO_MAX - PRIO_MIN;	1420	int prio;
1044		1421
1045	min_prio -= PRIO_MIN;
1046	if (min_prio < 0)
1047	min_prio = 0;
1048
1049	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1422	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1050	if (AvFILLp (coro_ready [prio]) >= 0)	1423	if (AvFILLp (coro_ready [prio]) >= 0)
1051	return av_shift (coro_ready [prio]);	1424	return av_shift (coro_ready [prio]);
1052		1425
1053	return 0;	1426	return 0;
1054	}	1427	}
…		…
1056	static int	1429	static int
1057	api_ready (SV *coro_sv)	1430	api_ready (SV *coro_sv)
1058	{	1431	{
1059	dTHX;	1432	dTHX;
1060	struct coro *coro;	1433	struct coro *coro;
		1434	SV *sv_hook;
		1435	void (*xs_hook)(void);
1061		1436
1062	if (SvROK (coro_sv))	1437	if (SvROK (coro_sv))
1063	coro_sv = SvRV (coro_sv);	1438	coro_sv = SvRV (coro_sv);
1064		1439
1065	coro = SvSTATE (coro_sv);	1440	coro = SvSTATE (coro_sv);
…		…
1068	return 0;	1443	return 0;
1069		1444
1070	coro->flags |= CF_READY;	1445	coro->flags |= CF_READY;
1071		1446
1072	LOCK;	1447	LOCK;
		1448
		1449	sv_hook = coro_nready ? 0 : coro_readyhook;
		1450	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1451
1073	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1452	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1074	++coro_nready;	1453	++coro_nready;
		1454
1075	UNLOCK;	1455	UNLOCK;
		1456
		1457	if (sv_hook)
		1458	{
		1459	dSP;
		1460
		1461	ENTER;
		1462	SAVETMPS;
		1463
		1464	PUSHMARK (SP);
		1465	PUTBACK;
		1466	call_sv (sv_hook, G_DISCARD);
		1467	SPAGAIN;
		1468
		1469	FREETMPS;
		1470	LEAVE;
		1471	}
		1472
		1473	if (xs_hook)
		1474	xs_hook ();
1076		1475
1077	return 1;	1476	return 1;
1078	}	1477	}
1079		1478
1080	static int	1479	static int
…		…
1090	SV *prev_sv, *next_sv;	1489	SV *prev_sv, *next_sv;
1091		1490
1092	for (;;)	1491	for (;;)
1093	{	1492	{
1094	LOCK;	1493	LOCK;
1095	next_sv = coro_deq (aTHX_ PRIO_MIN);	1494	next_sv = coro_deq (aTHX);
1096		1495
1097	/* nothing to schedule: call the idle handler */	1496	/* nothing to schedule: call the idle handler */
1098	if (!next_sv)	1497	if (expect_false (!next_sv))
1099	{	1498	{
1100	dSP;	1499	dSP;
1101	UNLOCK;	1500	UNLOCK;
1102		1501
1103	ENTER;	1502	ENTER;
1104	SAVETMPS;	1503	SAVETMPS;
1105		1504
1106	PUSHMARK (SP);	1505	PUSHMARK (SP);
1107	PUTBACK;	1506	PUTBACK;
1108	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1507	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1508	SPAGAIN;
1109		1509
1110	FREETMPS;	1510	FREETMPS;
1111	LEAVE;	1511	LEAVE;
1112	continue;	1512	continue;
1113	}	1513	}
1114		1514
1115	ta->next = SvSTATE (next_sv);	1515	ta->next = SvSTATE (next_sv);
1116		1516
1117	/* cannot transfer to destroyed coros, skip and look for next */	1517	/* cannot transfer to destroyed coros, skip and look for next */
1118	if (ta->next->flags & CF_DESTROYED)	1518	if (expect_false (ta->next->flags & CF_DESTROYED))
1119	{	1519	{
1120	UNLOCK;	1520	UNLOCK;
1121	SvREFCNT_dec (next_sv);	1521	SvREFCNT_dec (next_sv);
1122	/* coro_nready is already taken care of by destroy */	1522	/* coro_nready is already taken care of by destroy */
1123	continue;	1523	continue;
…		…
1128	break;	1528	break;
1129	}	1529	}
1130		1530
1131	/* free this only after the transfer */	1531	/* free this only after the transfer */
1132	prev_sv = SvRV (coro_current);	1532	prev_sv = SvRV (coro_current);
1133	SvRV_set (coro_current, next_sv);
1134	ta->prev = SvSTATE (prev_sv);	1533	ta->prev = SvSTATE (prev_sv);
1135		1534	TRANSFER_CHECK (*ta);
1136	assert (ta->next->flags & CF_READY);	1535	assert (ta->next->flags & CF_READY);
1137	ta->next->flags &= ~CF_READY;	1536	ta->next->flags &= ~CF_READY;
		1537	SvRV_set (coro_current, next_sv);
1138		1538
1139	LOCK;	1539	LOCK;
1140	free_coro_mortal (aTHX);	1540	free_coro_mortal (aTHX);
1141	coro_mortal = prev_sv;	1541	coro_mortal = prev_sv;
1142	UNLOCK;	1542	UNLOCK;
…		…
1168	{	1568	{
1169	dTHX;	1569	dTHX;
1170	struct transfer_args ta;	1570	struct transfer_args ta;
1171		1571
1172	prepare_schedule (aTHX_ &ta);	1572	prepare_schedule (aTHX_ &ta);
1173	TRANSFER (ta);	1573	TRANSFER (ta, 1);
1174	}	1574	}
1175		1575
1176	static int	1576	static int
1177	api_cede (void)	1577	api_cede (void)
1178	{	1578	{
1179	dTHX;	1579	dTHX;
1180	struct transfer_args ta;	1580	struct transfer_args ta;
1181		1581
1182	prepare_cede (aTHX_ &ta);	1582	prepare_cede (aTHX_ &ta);
1183		1583
1184	if (ta.prev != ta.next)	1584	if (expect_true (ta.prev != ta.next))
1185	{	1585	{
1186	TRANSFER (ta);	1586	TRANSFER (ta, 1);
1187	return 1;	1587	return 1;
1188	}	1588	}
1189	else	1589	else
1190	return 0;	1590	return 0;
1191	}	1591	}
…		…
1196	dTHX;	1596	dTHX;
1197	struct transfer_args ta;	1597	struct transfer_args ta;
1198		1598
1199	if (prepare_cede_notself (aTHX_ &ta))	1599	if (prepare_cede_notself (aTHX_ &ta))
1200	{	1600	{
1201	TRANSFER (ta);	1601	TRANSFER (ta, 1);
1202	return 1;	1602	return 1;
1203	}	1603	}
1204	else	1604	else
1205	return 0;	1605	return 0;
1206	}	1606	}
1207		1607
		1608	static void
		1609	api_trace (SV *coro_sv, int flags)
		1610	{
		1611	dTHX;
		1612	struct coro *coro = SvSTATE (coro_sv);
		1613
		1614	if (flags & CC_TRACE)
		1615	{
		1616	if (!coro->cctx)
		1617	coro->cctx = cctx_new ();
		1618	else if (!(coro->cctx->flags & CC_TRACE))
		1619	croak ("cannot enable tracing on coroutine with custom stack");
		1620
		1621	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1622	}
		1623	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1624	{
		1625	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1626
		1627	if (coro->flags & CF_RUNNING)
		1628	PL_runops = RUNOPS_DEFAULT;
		1629	else
		1630	coro->slot->runops = RUNOPS_DEFAULT;
		1631	}
		1632	}
		1633
		1634	static int
		1635	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1636	{
		1637	AV *padlist;
		1638	AV *av = (AV *)mg->mg_obj;
		1639
		1640	abort ();
		1641
		1642	return 0;
		1643	}
		1644
		1645	static MGVTBL coro_gensub_vtbl = {
		1646	0, 0, 0, 0,
		1647	coro_gensub_free
		1648	};
		1649
1208	MODULE = Coro::State PACKAGE = Coro::State	1650	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1209		1651
1210	PROTOTYPES: DISABLE	1652	PROTOTYPES: DISABLE
1211		1653
1212	BOOT:	1654	BOOT:
1213	{	1655	{
1214	#ifdef USE_ITHREADS	1656	#ifdef USE_ITHREADS
1215	MUTEX_INIT (&coro_mutex);	1657	MUTEX_INIT (&coro_mutex);
1216	#endif	1658	#endif
1217	BOOT_PAGESIZE;	1659	BOOT_PAGESIZE;
1218		1660
		1661	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1662	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1663
		1664	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1665	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1666	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1667
		1668	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1669	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1670	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1671
1219	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1672	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1220		1673
1221	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1222	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1675	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1223	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1224	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1225	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1226	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1676	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1227	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1677	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1228		1678
1229	main_mainstack = PL_mainstack;	1679	main_mainstack = PL_mainstack;
1230	main_top_env = PL_top_env;	1680	main_top_env = PL_top_env;
1231		1681
1232	while (main_top_env->je_prev)	1682	while (main_top_env->je_prev)
1233	main_top_env = main_top_env->je_prev;	1683	main_top_env = main_top_env->je_prev;
1234		1684
1235	coroapi.ver = CORO_API_VERSION;	1685	coroapi.ver = CORO_API_VERSION;
		1686	coroapi.rev = CORO_API_REVISION;
1236	coroapi.transfer = api_transfer;	1687	coroapi.transfer = api_transfer;
1237		1688
1238	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1689	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1239	}	1690	}
1240		1691
1241	SV *	1692	SV *
1242	new (char *klass, ...)	1693	new (char *klass, ...)
1243	CODE:	1694	CODE:
1244	{	1695	{
1245	struct coro *coro;	1696	struct coro *coro;
		1697	MAGIC *mg;
1246	HV *hv;	1698	HV *hv;
1247	int i;	1699	int i;
1248		1700
1249	Newz (0, coro, 1, struct coro);	1701	Newz (0, coro, 1, struct coro);
1250	coro->args = newAV ();	1702	coro->args = newAV ();
1251	coro->save = CORO_SAVE_DEF;
1252	coro->flags = CF_NEW;	1703	coro->flags = CF_NEW;
1253		1704
1254	if (coro_first) coro_first->prev = coro;	1705	if (coro_first) coro_first->prev = coro;
1255	coro->next = coro_first;	1706	coro->next = coro_first;
1256	coro_first = coro;	1707	coro_first = coro;
1257		1708
1258	coro->hv = hv = newHV ();	1709	coro->hv = hv = newHV ();
1259	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1710	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1711	mg->mg_flags |= MGf_DUP;
1260	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1712	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1261		1713
		1714	av_extend (coro->args, items - 1);
1262	for (i = 1; i < items; i++)	1715	for (i = 1; i < items; i++)
1263	av_push (coro->args, newSVsv (ST (i)));	1716	av_push (coro->args, newSVsv (ST (i)));
1264	}	1717	}
1265	OUTPUT:	1718	OUTPUT:
1266	RETVAL	1719	RETVAL
1267		1720
1268	int	1721	# these not obviously related functions are all rolled into the same xs
1269	save (SV *coro, int new_save = -1)	1722	# function to increase chances that they all will call transfer with the same
1270	CODE:	1723	# stack offset
1271	RETVAL = api_save (coro, new_save);
1272	OUTPUT:
1273	RETVAL
1274
1275	int
1276	save_also (SV *coro_sv, int save_also)
1277	CODE:
1278	{
1279	struct coro *coro = SvSTATE (coro_sv);
1280	RETVAL = coro->save;
1281	coro->save |= save_also;
1282	}
1283	OUTPUT:
1284	RETVAL
1285
1286	void	1724	void
1287	_set_stacklevel (...)	1725	_set_stacklevel (...)
1288	ALIAS:	1726	ALIAS:
1289	Coro::State::transfer = 1	1727	Coro::State::transfer = 1
1290	Coro::schedule = 2	1728	Coro::schedule = 2
…		…
1292	Coro::cede_notself = 4	1730	Coro::cede_notself = 4
1293	CODE:	1731	CODE:
1294	{	1732	{
1295	struct transfer_args ta;	1733	struct transfer_args ta;
1296		1734
		1735	PUTBACK;
1297	switch (ix)	1736	switch (ix)
1298	{	1737	{
1299	case 0:	1738	case 0:
1300	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1739	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1301	ta.next = 0;	1740	ta.next = 0;
…		…
1320	if (!prepare_cede_notself (aTHX_ &ta))	1759	if (!prepare_cede_notself (aTHX_ &ta))
1321	XSRETURN_EMPTY;	1760	XSRETURN_EMPTY;
1322		1761
1323	break;	1762	break;
1324	}	1763	}
		1764	SPAGAIN;
1325		1765
1326	BARRIER;	1766	BARRIER;
		1767	PUTBACK;
1327	TRANSFER (ta);	1768	TRANSFER (ta, 0);
1328		1769	SPAGAIN; /* might be the sp of a different coroutine now */
1329	if (GIMME_V != G_VOID && ta.next != ta.prev)	1770	/* be extra careful not to ever do anything after TRANSFER */
1330	XSRETURN_YES;
1331	}	1771	}
1332		1772
1333	bool	1773	bool
1334	_destroy (SV *coro_sv)	1774	_destroy (SV *coro_sv)
1335	CODE:	1775	CODE:
1336	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1776	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1337	OUTPUT:	1777	OUTPUT:
1338	RETVAL	1778	RETVAL
1339		1779
1340	void	1780	void
1341	_exit (code)	1781	_exit (int code)
1342	int code
1343	PROTOTYPE: $	1782	PROTOTYPE: $
1344	CODE:	1783	CODE:
1345	_exit (code);	1784	_exit (code);
1346		1785
1347	int	1786	int
…		…
1376	if (coro->hv)	1815	if (coro->hv)
1377	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));	1816	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1378	}	1817	}
1379		1818
1380	void	1819	void
1381	_eval (Coro::State coro, SV *coderef)	1820	call (Coro::State coro, SV *coderef)
		1821	ALIAS:
		1822	eval = 1
1382	CODE:	1823	CODE:
1383	{	1824	{
1384	if (coro->mainstack)	1825	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1385	{	1826	{
1386	struct coro temp;	1827	struct coro temp;
1387	Zero (&temp, 1, struct coro);
1388	temp.save = CORO_SAVE_ALL;
1389		1828
1390	if (!(coro->flags & CF_RUNNING))	1829	if (!(coro->flags & CF_RUNNING))
1391	{	1830	{
		1831	PUTBACK;
1392	save_perl (aTHX_ &temp);	1832	save_perl (aTHX_ &temp);
1393	load_perl (aTHX_ coro);	1833	load_perl (aTHX_ coro);
1394	}	1834	}
1395		1835
1396	{	1836	{
1397	dSP;	1837	dSP;
1398	ENTER;	1838	ENTER;
1399	SAVETMPS;	1839	SAVETMPS;
		1840	PUTBACK;
		1841	PUSHSTACK;
1400	PUSHMARK (SP);	1842	PUSHMARK (SP);
1401	PUTBACK;	1843
		1844	if (ix)
		1845	eval_sv (coderef, 0);
		1846	else
1402	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1847	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1848
		1849	POPSTACK;
1403	SPAGAIN;	1850	SPAGAIN;
1404	FREETMPS;	1851	FREETMPS;
1405	LEAVE;	1852	LEAVE;
1406	PUTBACK;	1853	PUTBACK;
1407	}	1854	}
1408		1855
1409	if (!(coro->flags & CF_RUNNING))	1856	if (!(coro->flags & CF_RUNNING))
1410	{	1857	{
1411	save_perl (aTHX_ coro);	1858	save_perl (aTHX_ coro);
1412	load_perl (aTHX_ &temp);	1859	load_perl (aTHX_ &temp);
		1860	SPAGAIN;
1413	}	1861	}
1414	}	1862	}
1415	}	1863	}
1416		1864
1417	SV *	1865	SV *
1418	is_ready (Coro::State coro)	1866	is_ready (Coro::State coro)
1419	PROTOTYPE: $	1867	PROTOTYPE: $
1420	ALIAS:	1868	ALIAS:
1421	is_ready = CF_READY	1869	is_ready = CF_READY
…		…
1425	CODE:	1873	CODE:
1426	RETVAL = boolSV (coro->flags & ix);	1874	RETVAL = boolSV (coro->flags & ix);
1427	OUTPUT:	1875	OUTPUT:
1428	RETVAL	1876	RETVAL
1429		1877
		1878	void
		1879	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1880
		1881	SV *
		1882	has_cctx (Coro::State coro)
		1883	PROTOTYPE: $
		1884	CODE:
		1885	RETVAL = boolSV (!!coro->cctx);
		1886	OUTPUT:
		1887	RETVAL
		1888
		1889	int
		1890	is_traced (Coro::State coro)
		1891	PROTOTYPE: $
		1892	CODE:
		1893	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1894	OUTPUT:
		1895	RETVAL
		1896
1430	IV	1897	IV
1431	rss (Coro::State coro)	1898	rss (Coro::State coro)
1432	PROTOTYPE: $	1899	PROTOTYPE: $
		1900	ALIAS:
		1901	usecount = 1
1433	CODE:	1902	CODE:
1434	RETVAL = coro_rss (coro);	1903	switch (ix)
		1904	{
		1905	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1906	case 1: RETVAL = coro->usecount; break;
		1907	}
1435	OUTPUT:	1908	OUTPUT:
1436	RETVAL	1909	RETVAL
1437		1910
		1911	void
		1912	force_cctx ()
		1913	CODE:
		1914	struct coro *coro = SvSTATE (coro_current);
		1915	coro->cctx->idle_sp = 0;
		1916
		1917	void
		1918	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1919	PROTOTYPE: $;$
		1920	CODE:
		1921	SvREFCNT_dec (self->throw);
		1922	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1923
		1924	void
		1925	swap_defsv (Coro::State self)
		1926	PROTOTYPE: $
		1927	ALIAS:
		1928	swap_defav = 1
		1929	CODE:
		1930	if (!self->slot)
		1931	croak ("cannot swap state with coroutine that has no saved state");
		1932	else
		1933	{
		1934	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1935	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1936
		1937	SV *tmp = *src; *src = *dst; *dst = tmp;
		1938	}
1438		1939
1439	MODULE = Coro::State PACKAGE = Coro	1940	MODULE = Coro::State PACKAGE = Coro
1440		1941
1441	BOOT:	1942	BOOT:
1442	{	1943	{
1443	int i;	1944	int i;
1444		1945
		1946	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1947	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1948	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1949
		1950	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1951	SvREADONLY_on (coro_current);
		1952
1445	coro_stash = gv_stashpv ("Coro", TRUE);	1953	coro_stash = gv_stashpv ("Coro", TRUE);
1446		1954
1447	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1955	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1448	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1956	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1449	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1957	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1450	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1958	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1451	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1959	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1452	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1960	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1453		1961
1454	coro_current = get_sv ("Coro::current", FALSE);
1455	SvREADONLY_on (coro_current);
1456
1457	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1962	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1458	coro_ready[i] = newAV ();	1963	coro_ready[i] = newAV ();
1459		1964
1460	{	1965	{
1461	SV *sv = perl_get_sv("Coro::API", 1);	1966	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1967	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1462		1968
1463	coroapi.schedule = api_schedule;	1969	coroapi.schedule = api_schedule;
1464	coroapi.save = api_save;
1465	coroapi.cede = api_cede;	1970	coroapi.cede = api_cede;
1466	coroapi.cede_notself = api_cede_notself;	1971	coroapi.cede_notself = api_cede_notself;
1467	coroapi.ready = api_ready;	1972	coroapi.ready = api_ready;
1468	coroapi.is_ready = api_is_ready;	1973	coroapi.is_ready = api_is_ready;
1469	coroapi.nready = &coro_nready;	1974	coroapi.nready = &coro_nready;
…		…
1479	_set_current (SV *current)	1984	_set_current (SV *current)
1480	PROTOTYPE: $	1985	PROTOTYPE: $
1481	CODE:	1986	CODE:
1482	SvREFCNT_dec (SvRV (coro_current));	1987	SvREFCNT_dec (SvRV (coro_current));
1483	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1988	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1989
		1990	void
		1991	_set_readyhook (SV *hook)
		1992	PROTOTYPE: $
		1993	CODE:
		1994	LOCK;
		1995	SvREFCNT_dec (coro_readyhook);
		1996	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1997	UNLOCK;
1484		1998
1485	int	1999	int
1486	prio (Coro::State coro, int newprio = 0)	2000	prio (Coro::State coro, int newprio = 0)
1487	ALIAS:	2001	ALIAS:
1488	nice = 1	2002	nice = 1
…		…
1518	CODE:	2032	CODE:
1519	RETVAL = coro_nready;	2033	RETVAL = coro_nready;
1520	OUTPUT:	2034	OUTPUT:
1521	RETVAL	2035	RETVAL
1522		2036
		2037	# for async_pool speedup
		2038	void
		2039	_pool_1 (SV *cb)
		2040	CODE:
		2041	{
		2042	struct coro *coro = SvSTATE (coro_current);
		2043	HV *hv = (HV *)SvRV (coro_current);
		2044	AV *defav = GvAV (PL_defgv);
		2045	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2046	AV *invoke_av;
		2047	int i, len;
		2048
		2049	if (!invoke)
		2050	{
		2051	SV *old = PL_diehook;
		2052	PL_diehook = 0;
		2053	SvREFCNT_dec (old);
		2054	croak ("\3async_pool terminate\2\n");
		2055	}
		2056
		2057	SvREFCNT_dec (coro->saved_deffh);
		2058	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2059
		2060	hv_store (hv, "desc", sizeof ("desc") - 1,
		2061	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2062
		2063	invoke_av = (AV *)SvRV (invoke);
		2064	len = av_len (invoke_av);
		2065
		2066	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2067
		2068	if (len > 0)
		2069	{
		2070	av_fill (defav, len - 1);
		2071	for (i = 0; i < len; ++i)
		2072	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2073	}
		2074
		2075	SvREFCNT_dec (invoke);
		2076	}
		2077
		2078	void
		2079	_pool_2 (SV *cb)
		2080	CODE:
		2081	{
		2082	struct coro *coro = SvSTATE (coro_current);
		2083
		2084	sv_setsv (cb, &PL_sv_undef);
		2085
		2086	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2087	coro->saved_deffh = 0;
		2088
		2089	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2090	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2091	{
		2092	SV *old = PL_diehook;
		2093	PL_diehook = 0;
		2094	SvREFCNT_dec (old);
		2095	croak ("\3async_pool terminate\2\n");
		2096	}
		2097
		2098	av_clear (GvAV (PL_defgv));
		2099	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2100	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2101
		2102	coro->prio = 0;
		2103
		2104	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2105	api_trace (coro_current, 0);
		2106
		2107	av_push (av_async_pool, newSVsv (coro_current));
		2108	}
		2109
		2110	#if 0
		2111
		2112	void
		2113	_generator_call (...)
		2114	PROTOTYPE: @
		2115	PPCODE:
		2116	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2117	xxxx
		2118	abort ();
		2119
		2120	SV *
		2121	gensub (SV *sub, ...)
		2122	PROTOTYPE: &;@
		2123	CODE:
		2124	{
		2125	struct coro *coro;
		2126	MAGIC *mg;
		2127	CV *xcv;
		2128	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2129	int i;
		2130
		2131	CvGV (ncv) = CvGV (cv);
		2132	CvFILE (ncv) = CvFILE (cv);
		2133
		2134	Newz (0, coro, 1, struct coro);
		2135	coro->args = newAV ();
		2136	coro->flags = CF_NEW;
		2137
		2138	av_extend (coro->args, items - 1);
		2139	for (i = 1; i < items; i++)
		2140	av_push (coro->args, newSVsv (ST (i)));
		2141
		2142	CvISXSUB_on (ncv);
		2143	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2144
		2145	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2146
		2147	CvXSUB (ncv) = CvXSUB (xcv);
		2148	CvANON_on (ncv);
		2149
		2150	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2151	RETVAL = newRV_noinc ((SV *)ncv);
		2152	}
		2153	OUTPUT:
		2154	RETVAL
		2155
		2156	#endif
		2157
		2158
1523	MODULE = Coro::State PACKAGE = Coro::AIO	2159	MODULE = Coro::State PACKAGE = Coro::AIO
1524		2160
1525	SV *	2161	SV *
1526	_get_state ()	2162	_get_state ()
1527	CODE:	2163	CODE:
…		…
1552	PL_laststype = data->laststype;	2188	PL_laststype = data->laststype;
1553	PL_laststatval = data->laststatval;	2189	PL_laststatval = data->laststatval;
1554	PL_statcache = data->statcache;	2190	PL_statcache = data->statcache;
1555	}	2191	}
1556		2192
		2193
		2194	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2195
		2196	BOOT:
		2197	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2198
		2199	SV *
		2200	_schedule (...)
		2201	PROTOTYPE: @
		2202	CODE:
		2203	{
		2204	static int incede;
		2205
		2206	api_cede_notself ();
		2207
		2208	++incede;
		2209	while (coro_nready >= incede && api_cede ())
		2210	;
		2211
		2212	sv_setsv (sv_activity, &PL_sv_undef);
		2213	if (coro_nready >= incede)
		2214	{
		2215	PUSHMARK (SP);
		2216	PUTBACK;
		2217	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2218	SPAGAIN;
		2219	}
		2220
		2221	--incede;
		2222	}
		2223

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