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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.244 by root, Sun Sep 21 18:29:39 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
9	#include "patchlevel.h"	10	#include "patchlevel.h"
10		11
11	#include <stdio.h>	12	#include <stdio.h>
12	#include <errno.h>	13	#include <errno.h>
13	#include <assert.h>	14	#include <assert.h>
		15
		16	#ifdef WIN32
		17	# undef setjmp
		18	# undef longjmp
		19	# undef _exit
		20	# define setjmp _setjmp // deep magic, don't ask
		21	#else
		22	# include <inttypes.h> /* most portable stdint.h */
		23	#endif
14		24
15	#ifdef HAVE_MMAP	25	#ifdef HAVE_MMAP
16	# include <unistd.h>	26	# include <unistd.h>
17	# include <sys/mman.h>	27	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	28	# ifndef MAP_ANONYMOUS
…		…
70	# ifndef IS_PADCONST	80	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	81	# define IS_PADCONST(v) 0
72	# endif	82	# endif
73	#endif	83	#endif
74		84
		85	/* 5.8.8 */
		86	#ifndef GV_NOTQUAL
		87	# define GV_NOTQUAL 0
		88	#endif
		89	#ifndef newSV
		90	# define newSV(l) NEWSV(0,l)
		91	#endif
		92
		93	/* 5.11 */
		94	#ifndef CxHASARGS
		95	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		96	#endif
		97
75	/* 5.8.7 */	98	/* 5.8.7 */
76	#ifndef SvRV_set	99	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	100	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	101	#endif
79		102
…		…
88	/* prefer perl internal functions over our own? */	111	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	112	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	113	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	114	#endif
92		115
93	/* The next macro should declare a variable stacklevel that contains and approximation	116	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	117	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	118	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	119	#define STACKLEVEL ((void *)&stacklevel)
98		120
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	121	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		122
101	#if __GNUC__ >= 3	123	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	124	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	125	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		126	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	127	#else
105	# define attribute(x)	128	# define attribute(x)
106	# define BARRIER	129	# define BARRIER
		130	# define expect(expr,value) (expr)
107	#endif	131	#endif
		132
		133	#define expect_false(expr) expect ((expr) != 0, 0)
		134	#define expect_true(expr) expect ((expr) != 0, 1)
108		135
109	#define NOINLINE attribute ((noinline))	136	#define NOINLINE attribute ((noinline))
110		137
111	#include "CoroAPI.h"	138	#include "CoroAPI.h"
112		139
…		…
129	};	156	};
130		157
131	static size_t coro_stacksize = CORO_STACKSIZE;	158	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	159	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	160	static AV *main_mainstack; /* used to differentiate between $main and others */
		161	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	162	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	163	static volatile SV *coro_mortal; /* will be freed after next transfer */
		164
		165	static GV *irsgv; /* $/ */
		166	static GV *stdoutgv; /* *STDOUT */
		167	static SV *rv_diehook;
		168	static SV *rv_warnhook;
		169	static HV *hv_sig; /* %SIG */
		170
		171	/* async_pool helper stuff */
		172	static SV *sv_pool_rss;
		173	static SV *sv_pool_size;
		174	static AV *av_async_pool;
		175
		176	/* Coro::AnyEvent */
		177	static SV *sv_activity;
136		178
137	static struct coro_cctx *cctx_first;	179	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	180	static int cctx_count, cctx_idle;
		181
		182	enum {
		183	CC_MAPPED = 0x01,
		184	CC_NOREUSE = 0x02, /* throw this away after tracing */
		185	CC_TRACE = 0x04,
		186	CC_TRACE_SUB = 0x08, /* trace sub calls */
		187	CC_TRACE_LINE = 0x10, /* trace each statement */
		188	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		189	};
139		190
140	/* this is a structure representing a c-level coroutine */	191	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	192	typedef struct coro_cctx {
142	struct coro_cctx *next;	193	struct coro_cctx *next;
143		194
…		…
152	coro_context cctx;	203	coro_context cctx;
153		204
154	#if CORO_USE_VALGRIND	205	#if CORO_USE_VALGRIND
155	int valgrind_id;	206	int valgrind_id;
156	#endif	207	#endif
157	char inuse, mapped;	208	unsigned char flags;
158	} coro_cctx;	209	} coro_cctx;
159		210
160	enum {	211	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	216	};
166		217
		218	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		219	typedef struct {
		220	SV *defsv;
		221	AV *defav;
		222	SV *errsv;
		223	SV *irsgv;
		224	#define VAR(name,type) type name;
		225	# include "state.h"
		226	#undef VAR
		227	} perl_slots;
		228
		229	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		230
167	/* this is a structure representing a perl-level coroutine */	231	/* this is a structure representing a perl-level coroutine */
168	struct coro {	232	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	233	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	234	coro_cctx *cctx;
171		235
		236	/* process data */
		237	AV *mainstack;
		238	perl_slots *slot; /* basically the saved sp */
		239
172	/* data associated with this coroutine (initial args) */	240	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	241	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	242	int flags; /* CF_ flags */
		243	HV *hv; /* the perl hash associated with this coro, if any */
177		244
178	/* optionally saved, might be zero */	245	/* statistics */
179	AV *defav; /* @_ */	246	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	GV *deffh; /* default filehandle */
183	SV *irssv; /* $/ */
184	SV *irssv_sv; /* real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		247
190	/* coro process data */	248	/* coro process data */
191	int prio;	249	int prio;
		250	SV *throw; /* exception to be thrown */
		251
		252	/* async_pool */
		253	SV *saved_deffh;
		254
		255	/* linked list */
		256	struct coro *next, *prev;
192	};	257	};
193		258
194	typedef struct coro *Coro__State;	259	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	260	typedef struct coro *Coro__State_or_hashref;
196		261
…		…
203	#define PRIO_IDLE -3	268	#define PRIO_IDLE -3
204	#define PRIO_MIN -4	269	#define PRIO_MIN -4
205		270
206	/* for Coro.pm */	271	/* for Coro.pm */
207	static SV *coro_current;	272	static SV *coro_current;
		273	static SV *coro_readyhook;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	274	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	275	static int coro_nready;
		276	static struct coro *coro_first;
210		277
211	/** lowlevel stuff **********************************************************/	278	/** lowlevel stuff **********************************************************/
		279
		280	static SV *
		281	coro_get_sv (pTHX_ const char *name, int create)
		282	{
		283	#if PERL_VERSION_ATLEAST (5,10,0)
		284	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		285	get_sv (name, create);
		286	#endif
		287	return get_sv (name, create);
		288	}
		289
		290	static AV *
		291	coro_get_av (pTHX_ const char *name, int create)
		292	{
		293	#if PERL_VERSION_ATLEAST (5,10,0)
		294	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		295	get_av (name, create);
		296	#endif
		297	return get_av (name, create);
		298	}
		299
		300	static HV *
		301	coro_get_hv (pTHX_ const char *name, int create)
		302	{
		303	#if PERL_VERSION_ATLEAST (5,10,0)
		304	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		305	get_hv (name, create);
		306	#endif
		307	return get_hv (name, create);
		308	}
212		309
213	static AV *	310	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	311	coro_clone_padlist (pTHX_ CV *cv)
215	{	312	{
216	AV *padlist = CvPADLIST (cv);	313	AV *padlist = CvPADLIST (cv);
217	AV *newpadlist, *newpad;	314	AV *newpadlist, *newpad;
218		315
219	newpadlist = newAV ();	316	newpadlist = newAV ();
220	AvREAL_off (newpadlist);	317	AvREAL_off (newpadlist);
221	#if PERL_VERSION_ATLEAST (5,9,0)	318	#if PERL_VERSION_ATLEAST (5,10,0)
222	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	319	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
223	#else	320	#else
224	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	321	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
225	#endif	322	#endif
226	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	323	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
…		…
269	SvREFCNT_dec (av);	366	SvREFCNT_dec (av);
270		367
271	return 0;	368	return 0;
272	}	369	}
273		370
274	#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
275		373
276	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	};
277		378
278	#define CORO_MAGIC(cv) \	379	#define CORO_MAGIC(sv,type) \
279	SvMAGIC (cv) \	380	SvMAGIC (sv) \
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	381	? SvMAGIC (sv)->mg_type == type \
281	? SvMAGIC (cv) \	382	? SvMAGIC (sv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	383	: mg_find (sv, type) \
283	: 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))
284		414
285	/* the next two functions merely cache the padlists */	415	/* the next two functions merely cache the padlists */
286	static void	416	static void
287	get_padlist (pTHX_ CV *cv)	417	get_padlist (pTHX_ CV *cv)
288	{	418	{
289	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC_cv (cv);
290	AV *av;	420	AV *av;
291		421
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	422	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	423	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	424	else
295	{	425	{
296	#if CORO_PREFER_PERL_FUNCTIONS	426	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	427	/* this is probably cleaner? but also slower! */
		428	/* in practise, it seems to be less stable */
298	CV *cp = Perl_cv_clone (cv);	429	CV *cp = Perl_cv_clone (cv);
299	CvPADLIST (cv) = CvPADLIST (cp);	430	CvPADLIST (cv) = CvPADLIST (cp);
300	CvPADLIST (cp) = 0;	431	CvPADLIST (cp) = 0;
301	SvREFCNT_dec (cp);	432	SvREFCNT_dec (cp);
302	#else	433	#else
…		…
306	}	437	}
307		438
308	static void	439	static void
309	put_padlist (pTHX_ CV *cv)	440	put_padlist (pTHX_ CV *cv)
310	{	441	{
311	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
312	AV *av;	443	AV *av;
313		444
314	if (!mg)	445	if (expect_false (!mg))
315	{	446	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();
320	}
321		447
322	av = (AV *)mg->mg_obj;	448	av = (AV *)mg->mg_obj;
323		449
324	if (AvFILLp (av) >= AvMAX (av))	450	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	451	av_extend (av, AvMAX (av) + 1);
326		452
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	453	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	454	}
329		455
330	/** load & save, init *******************************************************/	456	/** load & save, init *******************************************************/
331
332	#define SB do {
333	#define SE } while (0)
334
335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336		457
337	static void	458	static void
338	load_perl (pTHX_ Coro__State c)	459	load_perl (pTHX_ Coro__State c)
339	{	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
340	#define VAR(name,type) PL_ ## name = c->name;	471	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	472	# include "state.h"
342	#undef VAR	473	#undef VAR
343
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349	if (c->irssv)
350	{
351	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352	{
353	SvREFCNT_dec (c->irssv);
354	c->irssv = 0;
355	}
356	else
357	{
358	REPLACE_SV (PL_rs, c->irssv);
359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360	sv_setsv (c->irssv_sv, PL_rs);
361	}
362	}
363		474
364	{	475	{
365	dSP;	476	dSP;
		477
366	CV *cv;	478	CV *cv;
367		479
368	/* now do the ugly restore mess */	480	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	481	while (expect_true (cv = (CV *)POPs))
370	{	482	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	483	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	484	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	485	CvPADLIST (cv) = (AV *)POPs;
374	}	486	}
375		487
376	PUTBACK;	488	PUTBACK;
377	}	489	}
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	}	490	}
380		491
381	static void	492	static void
382	save_perl (pTHX_ Coro__State c)	493	save_perl (pTHX_ Coro__State c)
383	{	494	{
384	assert (!PL_comppad || AvARRAY (PL_comppad));//D
385	{	495	{
386	dSP;	496	dSP;
387	I32 cxix = cxstack_ix;	497	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	498	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	499	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	501	/*
392	* 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
393	* (and reinitialize) all cv's in the whole callchain :(	503	* (and reinitialize) all cv's in the whole callchain :(
394	*/	504	*/
395		505
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	506	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	507	/* this loop was inspired by pp_caller */
399	for (;;)	508	for (;;)
400	{	509	{
401	while (cxix >= 0)	510	while (expect_true (cxix >= 0))
402	{	511	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	512	PERL_CONTEXT *cx = &ccstk[cxix--];
404		513
405	if (CxTYPE (cx) == CXt_SUB)	514	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406	{	515	{
407	CV *cv = cx->blk_sub.cv;	516	CV *cv = cx->blk_sub.cv;
408		517
409	if (CvDEPTH (cv))	518	if (expect_true (CvDEPTH (cv)))
410	{	519	{
411	EXTEND (SP, 3);	520	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	521	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	522	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	523	PUSHs ((SV *)cv);
415		524
416	CvDEPTH (cv) = 0;	525	CvDEPTH (cv) = 0;
417	get_padlist (aTHX_ cv);	526	get_padlist (aTHX_ cv);
418	}	527	}
419	}	528	}
420	}	529	}
421		530
422	if (top_si->si_type == PERLSI_MAIN)	531	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	532	break;
424		533
425	top_si = top_si->si_prev;	534	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	535	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	536	cxix = top_si->si_cxix;
428	}	537	}
429		538
430	PUTBACK;	539	PUTBACK;
431	}	540	}
432		541
433	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 */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	543	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	544	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	545	if (SLOT_COUNT >= 2) CXINC;
437	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 */
438		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
439	#define VAR(name,type)c->name = PL_ ## name;	564	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	565	# include "state.h"
441	#undef VAR	566	#undef VAR
		567	}
442	}	568	}
443		569
444	/*	570	/*
445	* allocate various perl stacks. This is an exact copy	571	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	572	* of perl.c:init_stacks, except that it uses less memory
…		…
451	# define coro_init_stacks init_stacks	577	# define coro_init_stacks init_stacks
452	#else	578	#else
453	static void	579	static void
454	coro_init_stacks (pTHX)	580	coro_init_stacks (pTHX)
455	{	581	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	582	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	583	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	584	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	585	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		586
461	PL_stack_base = AvARRAY(PL_curstack);	587	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	588	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	589	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		590
465	New(50,PL_tmps_stack,128,SV*);	591	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	592	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	593	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	594	PL_tmps_max = 32;
469		595
470	New(54,PL_markstack,32,I32);	596	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	597	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	598	PL_markstack_max = PL_markstack + 16;
473		599
474	#ifdef SET_MARK_OFFSET	600	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	601	SET_MARK_OFFSET;
476	#endif	602	#endif
477		603
478	New(54,PL_scopestack,32,I32);	604	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	605	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	606	PL_scopestack_max = 8;
481		607
482	New(54,PL_savestack,64,ANY);	608	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	609	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	610	PL_savestack_max = 24;
485		611
486	#if !PERL_VERSION_ATLEAST (5,9,0)	612	#if !PERL_VERSION_ATLEAST (5,10,0)
487	New(54,PL_retstack,16,OP*);	613	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	614	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	615	PL_retstack_max = 4;
490	#endif	616	#endif
491	}	617	}
492	#endif	618	#endif
493		619
494	/*	620	/*
495	* destroy the stacks, the callchain etc...	621	* destroy the stacks, the callchain etc...
496	*/	622	*/
497	static void	623	static void
498	coro_destroy_stacks (pTHX)	624	coro_destroy_stacks (pTHX)
499	{	625	{
500	if (!IN_DESTRUCT)
501	{
502	/* restore all saved variables and stuff */
503	LEAVE_SCOPE (0);
504	assert (PL_tmps_floor == -1);
505
506	/* free all temporaries */
507	FREETMPS;
508	assert (PL_tmps_ix == -1);
509
510	/* unwind all extra stacks */
511	POPSTACK_TO (PL_mainstack);
512
513	/* unwind main stack */
514	dounwind (-1);
515	}
516
517	while (PL_curstackinfo->si_next)	626	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	627	PL_curstackinfo = PL_curstackinfo->si_next;
519		628
520	while (PL_curstackinfo)	629	while (PL_curstackinfo)
521	{	630	{
…		…
531		640
532	Safefree (PL_tmps_stack);	641	Safefree (PL_tmps_stack);
533	Safefree (PL_markstack);	642	Safefree (PL_markstack);
534	Safefree (PL_scopestack);	643	Safefree (PL_scopestack);
535	Safefree (PL_savestack);	644	Safefree (PL_savestack);
536	#if !PERL_VERSION_ATLEAST (5,9,0)	645	#if !PERL_VERSION_ATLEAST (5,10,0)
537	Safefree (PL_retstack);	646	Safefree (PL_retstack);
538	#endif	647	#endif
539	}	648	}
540		649
		650	static size_t
		651	coro_rss (pTHX_ struct coro *coro)
		652	{
		653	size_t rss = sizeof (*coro);
		654
		655	if (coro->mainstack)
		656	{
		657	perl_slots tmp_slot;
		658	perl_slots *slot;
		659
		660	if (coro->flags & CF_RUNNING)
		661	{
		662	slot = &tmp_slot;
		663
		664	#define VAR(name,type) slot->name = PL_ ## name;
		665	# include "state.h"
		666	#undef VAR
		667	}
		668	else
		669	slot = coro->slot;
		670
		671	rss += sizeof (slot->curstackinfo);
		672	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		673	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		674	rss += slot->tmps_max * sizeof (SV *);
		675	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		676	rss += slot->scopestack_max * sizeof (I32);
		677	rss += slot->savestack_max * sizeof (ANY);
		678
		679	#if !PERL_VERSION_ATLEAST (5,10,0)
		680	rss += slot->retstack_max * sizeof (OP *);
		681	#endif
		682	}
		683
		684	return rss;
		685	}
		686
541	/** coroutine stack handling ************************************************/	687	/** coroutine stack handling ************************************************/
542		688
		689	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		690	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		691	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		692
		693	/* apparently < 5.8.8 */
		694	#ifndef MgPV_nolen_const
		695	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		696	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		697	(const char*)(mg)->mg_ptr)
		698	#endif
		699
		700	/*
		701	* This overrides the default magic get method of %SIG elements.
		702	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		703	* and instead of tryign to save and restore the hash elements, we just provide
		704	* readback here.
		705	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		706	* not expecting this to actually change the hook. This is a potential problem
		707	* when a schedule happens then, but we ignore this.
		708	*/
		709	static int
		710	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		711	{
		712	const char *s = MgPV_nolen_const (mg);
		713
		714	if (*s == '_')
		715	{
		716	SV **svp = 0;
		717
		718	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		719	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		720
		721	if (svp)
		722	{
		723	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		724	return 0;
		725	}
		726	}
		727
		728	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		729	}
		730
		731	static int
		732	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		733	{
		734	const char *s = MgPV_nolen_const (mg);
		735
		736	if (*s == '_')
		737	{
		738	SV **svp = 0;
		739
		740	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		741	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		742
		743	if (svp)
		744	{
		745	SV *old = *svp;
		746	*svp = 0;
		747	SvREFCNT_dec (old);
		748	return 0;
		749	}
		750	}
		751
		752	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		753	}
		754
		755	static int
		756	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		757	{
		758	const char *s = MgPV_nolen_const (mg);
		759
		760	if (*s == '_')
		761	{
		762	SV **svp = 0;
		763
		764	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		765	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		766
		767	if (svp)
		768	{
		769	SV *old = *svp;
		770	*svp = newSVsv (sv);
		771	SvREFCNT_dec (old);
		772	return 0;
		773	}
		774	}
		775
		776	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		777	}
		778
543	static void	779	static void
544	setup_coro (pTHX_ struct coro *coro)	780	coro_setup (pTHX_ struct coro *coro)
545	{	781	{
546	/*	782	/*
547	* emulate part of the perl startup here.	783	* emulate part of the perl startup here.
548	*/	784	*/
549	coro_init_stacks (aTHX);	785	coro_init_stacks (aTHX);
550		786
		787	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	788	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	789	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	790	PL_comppad = 0;
554	PL_curpm = 0;	791	PL_curpm = 0;
		792	PL_curpad = 0;
555	PL_localizing = 0;	793	PL_localizing = 0;
556	PL_dirty = 0;	794	PL_dirty = 0;
557	PL_restartop = 0;	795	PL_restartop = 0;
		796	#if PERL_VERSION_ATLEAST (5,10,0)
		797	PL_parser = 0;
		798	#endif
		799
		800	/* recreate the die/warn hooks */
		801	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		802	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		803
		804	GvSV (PL_defgv) = newSV (0);
		805	GvAV (PL_defgv) = coro->args; coro->args = 0;
		806	GvSV (PL_errgv) = newSV (0);
		807	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		808	PL_rs = newSVsv (GvSV (irsgv));
		809	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
558		810
559	{	811	{
560	dSP;	812	dSP;
561	LOGOP myop;	813	LOGOP myop;
562		814
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	816	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	817	myop.op_flags = OPf_WANT_VOID;
569		818
570	PUSHMARK (SP);	819	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	820	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	821	PUTBACK;
573	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	824	SPAGAIN;
576	}	825	}
577		826
578	ENTER; /* necessary e.g. for dounwind */	827	/* this newly created coroutine might be run on an existing cctx which most
		828	* likely was suspended in set_stacklevel, called from entersub.
		829	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		830	* so we ENTER here for symmetry
		831	*/
		832	ENTER;
		833	}
		834
		835	static void
		836	coro_destroy (pTHX_ struct coro *coro)
		837	{
		838	if (!IN_DESTRUCT)
		839	{
		840	/* restore all saved variables and stuff */
		841	LEAVE_SCOPE (0);
		842	assert (PL_tmps_floor == -1);
		843
		844	/* free all temporaries */
		845	FREETMPS;
		846	assert (PL_tmps_ix == -1);
		847
		848	/* unwind all extra stacks */
		849	POPSTACK_TO (PL_mainstack);
		850
		851	/* unwind main stack */
		852	dounwind (-1);
		853	}
		854
		855	SvREFCNT_dec (GvSV (PL_defgv));
		856	SvREFCNT_dec (GvAV (PL_defgv));
		857	SvREFCNT_dec (GvSV (PL_errgv));
		858	SvREFCNT_dec (PL_defoutgv);
		859	SvREFCNT_dec (PL_rs);
		860	SvREFCNT_dec (GvSV (irsgv));
		861
		862	SvREFCNT_dec (PL_diehook);
		863	SvREFCNT_dec (PL_warnhook);
		864
		865	SvREFCNT_dec (coro->saved_deffh);
		866	SvREFCNT_dec (coro->throw);
		867
		868	coro_destroy_stacks (aTHX);
579	}	869	}
580		870
581	static void	871	static void
582	free_coro_mortal (pTHX)	872	free_coro_mortal (pTHX)
583	{	873	{
584	if (coro_mortal)	874	if (expect_true (coro_mortal))
585	{	875	{
586	SvREFCNT_dec (coro_mortal);	876	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	877	coro_mortal = 0;
588	}	878	}
589	}	879	}
590		880
		881	static int
		882	runops_trace (pTHX)
		883	{
		884	COP *oldcop = 0;
		885	int oldcxix = -2;
		886	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		887	coro_cctx *cctx = coro->cctx;
		888
		889	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		890	{
		891	PERL_ASYNC_CHECK ();
		892
		893	if (cctx->flags & CC_TRACE_ALL)
		894	{
		895	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		896	{
		897	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		898	SV **bot, **top;
		899	AV *av = newAV (); /* return values */
		900	SV **cb;
		901	dSP;
		902
		903	GV *gv = CvGV (cx->blk_sub.cv);
		904	SV *fullname = sv_2mortal (newSV (0));
		905	if (isGV (gv))
		906	gv_efullname3 (fullname, gv, 0);
		907
		908	bot = PL_stack_base + cx->blk_oldsp + 1;
		909	top = cx->blk_gimme == G_ARRAY ? SP + 1
		910	: cx->blk_gimme == G_SCALAR ? bot + 1
		911	: bot;
		912
		913	av_extend (av, top - bot);
		914	while (bot < top)
		915	av_push (av, SvREFCNT_inc (*bot++));
		916
		917	PL_runops = RUNOPS_DEFAULT;
		918	ENTER;
		919	SAVETMPS;
		920	EXTEND (SP, 3);
		921	PUSHMARK (SP);
		922	PUSHs (&PL_sv_no);
		923	PUSHs (fullname);
		924	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		925	PUTBACK;
		926	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		927	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		928	SPAGAIN;
		929	FREETMPS;
		930	LEAVE;
		931	PL_runops = runops_trace;
		932	}
		933
		934	if (oldcop != PL_curcop)
		935	{
		936	oldcop = PL_curcop;
		937
		938	if (PL_curcop != &PL_compiling)
		939	{
		940	SV **cb;
		941
		942	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		943	{
		944	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		945
		946	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		947	{
		948	runops_proc_t old_runops = PL_runops;
		949	dSP;
		950	GV *gv = CvGV (cx->blk_sub.cv);
		951	SV *fullname = sv_2mortal (newSV (0));
		952
		953	if (isGV (gv))
		954	gv_efullname3 (fullname, gv, 0);
		955
		956	PL_runops = RUNOPS_DEFAULT;
		957	ENTER;
		958	SAVETMPS;
		959	EXTEND (SP, 3);
		960	PUSHMARK (SP);
		961	PUSHs (&PL_sv_yes);
		962	PUSHs (fullname);
		963	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		964	PUTBACK;
		965	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		966	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		967	SPAGAIN;
		968	FREETMPS;
		969	LEAVE;
		970	PL_runops = runops_trace;
		971	}
		972
		973	oldcxix = cxstack_ix;
		974	}
		975
		976	if (cctx->flags & CC_TRACE_LINE)
		977	{
		978	dSP;
		979
		980	PL_runops = RUNOPS_DEFAULT;
		981	ENTER;
		982	SAVETMPS;
		983	EXTEND (SP, 3);
		984	PL_runops = RUNOPS_DEFAULT;
		985	PUSHMARK (SP);
		986	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		987	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		988	PUTBACK;
		989	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		990	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		991	SPAGAIN;
		992	FREETMPS;
		993	LEAVE;
		994	PL_runops = runops_trace;
		995	}
		996	}
		997	}
		998	}
		999	}
		1000
		1001	TAINT_NOT;
		1002	return 0;
		1003	}
		1004
591	/* inject a fake call to Coro::State::_cctx_init into the execution */	1005	/* inject a fake call to Coro::State::_cctx_init into the execution */
		1006	/* _cctx_init should be careful, as it could be called at almost any time */
		1007	/* during execution of a perl program */
592	static void NOINLINE	1008	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	1009	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	1010	{
595	dSP;	1011	dSP;
596	LOGOP myop;	1012	LOGOP myop;
		1013
		1014	PL_top_env = &PL_start_env;
		1015
		1016	if (cctx->flags & CC_TRACE)
		1017	PL_runops = runops_trace;
597		1018
598	Zero (&myop, 1, LOGOP);	1019	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	1020	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1021	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601		1022
…		…
607	PL_op = (OP *)&myop;	1028	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1029	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	1030	SPAGAIN;
610	}	1031	}
611		1032
		1033	/*
		1034	* this is a _very_ stripped down perl interpreter ;)
		1035	*/
612	static void	1036	static void
613	coro_run (void *arg)	1037	cctx_run (void *arg)
614	{	1038	{
615	dTHX;	1039	dTHX;
616		1040
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	1041	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	1042	UNLOCK;
619		1043
620	/*	1044	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	1045	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		1046
625	/* inject call to cctx_init */	1047	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	1048	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		1049
628	/* somebody will hit me for both perl_run and PL_restartop */	1050	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	1051	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	1052	perl_run (PL_curinterp);
631		1053
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	1054	/*
633	abort ();	1055	* If perl-run returns we assume exit() was being called or the coro
		1056	* fell off the end, which seems to be the only valid (non-bug)
		1057	* reason for perl_run to return. We try to exit by jumping to the
		1058	* bootstrap-time "top" top_env, as we cannot restore the "main"
		1059	* coroutine as Coro has no such concept
		1060	*/
		1061	PL_top_env = main_top_env;
		1062	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	1063	}
635		1064
636	static coro_cctx *	1065	static coro_cctx *
637	cctx_new ()	1066	cctx_new ()
638	{	1067	{
…		…
643	++cctx_count;	1072	++cctx_count;
644		1073
645	Newz (0, cctx, 1, coro_cctx);	1074	Newz (0, cctx, 1, coro_cctx);
646		1075
647	#if HAVE_MMAP	1076	#if HAVE_MMAP
648
649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1077	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650	/* mmap supposedly does allocate-on-write for us */	1078	/* mmap supposedly does allocate-on-write for us */
651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1079	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652		1080
653	if (cctx->sptr != (void *)-1)	1081	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	1083	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1084	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	1085	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1086	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1087	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	1088	cctx->flags |= CC_MAPPED;
661	}	1089	}
662	else	1090	else
663	#endif	1091	#endif
664	{	1092	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	1093	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	1102	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	1103	stack_size = cctx->ssize;
676	}	1104	}
677		1105
678	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1106	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1107	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680		1108
681	return cctx;	1109	return cctx;
682	}	1110	}
683		1111
684	static void	1112	static void
…		…
692	#if CORO_USE_VALGRIND	1120	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1121	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1122	#endif
695		1123
696	#if HAVE_MMAP	1124	#if HAVE_MMAP
697	if (cctx->mapped)	1125	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1126	munmap (cctx->sptr, cctx->ssize);
699	else	1127	else
700	#endif	1128	#endif
701	Safefree (cctx->sptr);	1129	Safefree (cctx->sptr);
702		1130
703	Safefree (cctx);	1131	Safefree (cctx);
704	}	1132	}
705		1133
		1134	/* wether this cctx should be destructed */
		1135	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1136
706	static coro_cctx *	1137	static coro_cctx *
707	cctx_get (pTHX)	1138	cctx_get (pTHX)
708	{	1139	{
709	while (cctx_first)	1140	while (expect_true (cctx_first))
710	{	1141	{
711	coro_cctx *cctx = cctx_first;	1142	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1143	cctx_first = cctx->next;
713	--cctx_idle;	1144	--cctx_idle;
714		1145
715	if (cctx->ssize >= coro_stacksize)	1146	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1147	return cctx;
717		1148
718	cctx_destroy (cctx);	1149	cctx_destroy (cctx);
719	}	1150	}
720		1151
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1152	return cctx_new ();
723	}	1153	}
724		1154
725	static void	1155	static void
726	cctx_put (coro_cctx *cctx)	1156	cctx_put (coro_cctx *cctx)
727	{	1157	{
728	/* free another cctx if overlimit */	1158	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1159	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1160	{
731	coro_cctx *first = cctx_first;	1161	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1162	cctx_first = first->next;
733	--cctx_idle;	1163	--cctx_idle;
734		1164
735	assert (!first->inuse);
736	cctx_destroy (first);	1165	cctx_destroy (first);
737	}	1166	}
738		1167
739	++cctx_idle;	1168	++cctx_idle;
740	cctx->next = cctx_first;	1169	cctx->next = cctx_first;
741	cctx_first = cctx;	1170	cctx_first = cctx;
742	}	1171	}
743		1172
744	/** coroutine switching *****************************************************/	1173	/** coroutine switching *****************************************************/
745		1174
746	/* never call directly, always through the coro_state_transfer global variable */	1175	static void
		1176	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1177	{
		1178	if (expect_true (prev != next))
		1179	{
		1180	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1181	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1182
		1183	if (expect_false (next->flags & CF_RUNNING))
		1184	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1185
		1186	if (expect_false (next->flags & CF_DESTROYED))
		1187	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1188
		1189	#if !PERL_VERSION_ATLEAST (5,10,0)
		1190	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		1191	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1192	#endif
		1193	}
		1194	}
		1195
		1196	/* always use the TRANSFER macro */
747	static void NOINLINE	1197	static void NOINLINE
748	transfer (pTHX_ struct coro *prev, struct coro *next)	1198	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
749	{	1199	{
750	dSTACKLEVEL;	1200	dSTACKLEVEL;
		1201	static volatile int has_throw;
751		1202
752	/* sometimes transfer is only called to set idle_sp */	1203	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1204	if (expect_false (!next))
754	{	1205	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1206	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1207	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757	}	1208	}
758	else if (prev != next)	1209	else if (expect_true (prev != next))
759	{	1210	{
760	coro_cctx *prev__cctx;	1211	coro_cctx *prev__cctx;
761		1212
762	if (prev->flags & CF_NEW)	1213	if (expect_false (prev->flags & CF_NEW))
763	{	1214	{
764	/* create a new empty context */	1215	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1216	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1217	prev->flags &= ~CF_NEW;
768	prev->flags |= CF_RUNNING;	1218	prev->flags |= CF_RUNNING;
769	}	1219	}
770		1220
771	/*TODO: must not croak here */
772	if (!prev->flags & CF_RUNNING)
773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775	if (next->flags & CF_RUNNING)
776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778	if (next->flags & CF_DESTROYED)
779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781	prev->flags &= ~CF_RUNNING;	1221	prev->flags &= ~CF_RUNNING;
782	next->flags |= CF_RUNNING;	1222	next->flags |= CF_RUNNING;
783		1223
784	LOCK;	1224	LOCK;
785		1225
		1226	/* first get rid of the old state */
		1227	save_perl (aTHX_ prev);
		1228
786	if (next->flags & CF_NEW)	1229	if (expect_false (next->flags & CF_NEW))
787	{	1230	{
788	/* need to start coroutine */	1231	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1232	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */
791	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1233	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1234	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1235	}
797	else	1236	else
798	{
799	/* coroutine already started */
800	save_perl (aTHX_ prev);
801	load_perl (aTHX_ next);	1237	load_perl (aTHX_ next);
802	}
803		1238
804	prev__cctx = prev->cctx;	1239	prev__cctx = prev->cctx;
805		1240
806	/* possibly "free" the cctx */	1241	/* possibly "free" the cctx */
		1242	if (expect_true (
807	if (prev__cctx->idle_sp == STACKLEVEL)	1243	prev__cctx->idle_sp == STACKLEVEL
		1244	&& !(prev__cctx->flags & CC_TRACE)
		1245	&& !force_cctx
		1246	))
808	{	1247	{
809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1248	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1249	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811		1250
812	prev->cctx = 0;	1251	prev->cctx = 0;
813		1252
		1253	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1254	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1255	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1256	if (!next->cctx)
		1257	next->cctx = cctx_get (aTHX);
		1258
814	cctx_put (prev__cctx);	1259	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1260	}
817		1261
		1262	++next->usecount;
		1263
818	if (!next->cctx)	1264	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1265	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1266
		1267	has_throw = !!next->throw;
		1268
825	if (prev__cctx != next->cctx)	1269	if (expect_false (prev__cctx != next->cctx))
826	{	1270	{
827	prev__cctx->top_env = PL_top_env;	1271	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1272	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1273	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1274	}
831		1275
832	free_coro_mortal (aTHX);	1276	free_coro_mortal (aTHX);
833	UNLOCK;	1277	UNLOCK;
		1278
		1279	if (expect_false (has_throw))
		1280	{
		1281	struct coro *coro = SvSTATE (coro_current);
		1282
		1283	if (coro->throw)
		1284	{
		1285	SV *exception = coro->throw;
		1286	coro->throw = 0;
		1287	sv_setsv (ERRSV, exception);
		1288	croak (0);
		1289	}
		1290	}
834	}	1291	}
835	}	1292	}
836		1293
837	struct transfer_args	1294	struct transfer_args
838	{	1295	{
839	struct coro *prev, *next;	1296	struct coro *prev, *next;
840	};	1297	};
841		1298
		1299	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1300	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843		1301
844	/** high level stuff ********************************************************/	1302	/** high level stuff ********************************************************/
845		1303
846	static int	1304	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1305	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1322
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1323	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1324	{
867	struct coro temp;	1325	struct coro temp;
868		1326
869	assert (!(coro->flags & CF_RUNNING));
870
871	Zero (&temp, 1, struct coro);
872	temp.save = CORO_SAVE_DEF;
873
874	if (coro->flags & CF_RUNNING)	1327	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1328	croak ("FATAL: tried to destroy currently running coroutine");
876		1329
877	save_perl (aTHX_ &temp);	1330	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1331	load_perl (aTHX_ coro);
879		1332
880	coro_destroy_stacks (aTHX);	1333	coro_destroy (aTHX_ coro);
881		1334
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1335	load_perl (aTHX_ &temp);
883		1336
884	coro->mainstack = 0;	1337	coro->slot = 0;
885	}	1338	}
886		1339
887	cctx_destroy (coro->cctx);	1340	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1341	SvREFCNT_dec (coro->args);
889		1342
		1343	if (coro->next) coro->next->prev = coro->prev;
		1344	if (coro->prev) coro->prev->next = coro->next;
		1345	if (coro == coro_first) coro_first = coro->next;
		1346
890	return 1;	1347	return 1;
891	}	1348	}
892		1349
893	static int	1350	static int
894	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1351	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895	{	1352	{
896	struct coro *coro = (struct coro *)mg->mg_ptr;	1353	struct coro *coro = (struct coro *)mg->mg_ptr;
897	mg->mg_ptr = 0;	1354	mg->mg_ptr = 0;
		1355
		1356	coro->hv = 0;
898		1357
899	if (--coro->refcnt < 0)	1358	if (--coro->refcnt < 0)
900	{	1359	{
901	coro_state_destroy (aTHX_ coro);	1360	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1361	Safefree (coro);
…		…
924	#else	1383	#else
925	# define MGf_DUP 0	1384	# define MGf_DUP 0
926	#endif	1385	#endif
927	};	1386	};
928		1387
929	static struct coro *
930	SvSTATE_ (pTHX_ SV *coro)
931	{
932	HV *stash;
933	MAGIC *mg;
934
935	if (SvROK (coro))
936	coro = SvRV (coro);
937
938	stash = SvSTASH (coro);
939	if (stash != coro_stash && stash != coro_state_stash)
940	{
941	/* very slow, but rare, check */
942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943	croak ("Coro::State object required");
944	}
945
946	mg = CORO_MAGIC (coro);
947	return (struct coro *)mg->mg_ptr;
948	}
949
950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952	static void	1388	static void
953	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1389	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
954	{	1390	{
955	ta->prev = SvSTATE (prev_sv);	1391	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1392	ta->next = SvSTATE (next_sv);
		1393	TRANSFER_CHECK (*ta);
957	}	1394	}
958		1395
959	static void	1396	static void
960	api_transfer (SV *prev_sv, SV *next_sv)	1397	api_transfer (SV *prev_sv, SV *next_sv)
961	{	1398	{
962	dTHX;	1399	dTHX;
963	struct transfer_args ta;	1400	struct transfer_args ta;
964		1401
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1402	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1403	TRANSFER (ta, 1);
967	}
968
969	static int
970	api_save (SV *coro_sv, int new_save)
971	{
972	dTHX;
973	struct coro *coro = SvSTATE (coro_sv);
974	int old_save = coro->save;
975
976	if (new_save >= 0)
977	coro->save = new_save;
978
979	return old_save;
980	}	1404	}
981		1405
982	/** Coro ********************************************************************/	1406	/** Coro ********************************************************************/
983		1407
984	static void	1408	static void
…		…
986	{	1410	{
987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1411	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
988	}	1412	}
989		1413
990	static SV *	1414	static SV *
991	coro_deq (pTHX_ int min_prio)	1415	coro_deq (pTHX)
992	{	1416	{
993	int prio = PRIO_MAX - PRIO_MIN;	1417	int prio;
994		1418
995	min_prio -= PRIO_MIN;
996	if (min_prio < 0)
997	min_prio = 0;
998
999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1419	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000	if (AvFILLp (coro_ready [prio]) >= 0)	1420	if (AvFILLp (coro_ready [prio]) >= 0)
1001	return av_shift (coro_ready [prio]);	1421	return av_shift (coro_ready [prio]);
1002		1422
1003	return 0;	1423	return 0;
1004	}	1424	}
…		…
1006	static int	1426	static int
1007	api_ready (SV *coro_sv)	1427	api_ready (SV *coro_sv)
1008	{	1428	{
1009	dTHX;	1429	dTHX;
1010	struct coro *coro;	1430	struct coro *coro;
		1431	SV *sv_hook;
		1432	void (*xs_hook)(void);
1011		1433
1012	if (SvROK (coro_sv))	1434	if (SvROK (coro_sv))
1013	coro_sv = SvRV (coro_sv);	1435	coro_sv = SvRV (coro_sv);
1014		1436
1015	coro = SvSTATE (coro_sv);	1437	coro = SvSTATE (coro_sv);
…		…
1018	return 0;	1440	return 0;
1019		1441
1020	coro->flags |= CF_READY;	1442	coro->flags |= CF_READY;
1021		1443
1022	LOCK;	1444	LOCK;
		1445
		1446	sv_hook = coro_nready ? 0 : coro_readyhook;
		1447	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1448
1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1449	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1024	++coro_nready;	1450	++coro_nready;
		1451
1025	UNLOCK;	1452	UNLOCK;
		1453
		1454	if (sv_hook)
		1455	{
		1456	dSP;
		1457
		1458	ENTER;
		1459	SAVETMPS;
		1460
		1461	PUSHMARK (SP);
		1462	PUTBACK;
		1463	call_sv (sv_hook, G_DISCARD);
		1464	SPAGAIN;
		1465
		1466	FREETMPS;
		1467	LEAVE;
		1468	}
		1469
		1470	if (xs_hook)
		1471	xs_hook ();
1026		1472
1027	return 1;	1473	return 1;
1028	}	1474	}
1029		1475
1030	static int	1476	static int
…		…
1040	SV *prev_sv, *next_sv;	1486	SV *prev_sv, *next_sv;
1041		1487
1042	for (;;)	1488	for (;;)
1043	{	1489	{
1044	LOCK;	1490	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1491	next_sv = coro_deq (aTHX);
1046		1492
1047	/* nothing to schedule: call the idle handler */	1493	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1494	if (expect_false (!next_sv))
1049	{	1495	{
1050	dSP;	1496	dSP;
1051	UNLOCK;	1497	UNLOCK;
1052		1498
1053	ENTER;	1499	ENTER;
1054	SAVETMPS;	1500	SAVETMPS;
1055		1501
1056	PUSHMARK (SP);	1502	PUSHMARK (SP);
1057	PUTBACK;	1503	PUTBACK;
1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1504	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1505	SPAGAIN;
1059		1506
1060	FREETMPS;	1507	FREETMPS;
1061	LEAVE;	1508	LEAVE;
1062	continue;	1509	continue;
1063	}	1510	}
1064		1511
1065	ta->next = SvSTATE (next_sv);	1512	ta->next = SvSTATE (next_sv);
1066		1513
1067	/* cannot transfer to destroyed coros, skip and look for next */	1514	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1515	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1516	{
1070	UNLOCK;	1517	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1518	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1519	/* coro_nready is already taken care of by destroy */
1073	continue;	1520	continue;
…		…
1078	break;	1525	break;
1079	}	1526	}
1080		1527
1081	/* free this only after the transfer */	1528	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1529	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1530	ta->prev = SvSTATE (prev_sv);
1085		1531	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1532	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1533	ta->next->flags &= ~CF_READY;
		1534	SvRV_set (coro_current, next_sv);
1088		1535
1089	LOCK;	1536	LOCK;
1090	free_coro_mortal (aTHX);	1537	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1538	coro_mortal = prev_sv;
1092	UNLOCK;	1539	UNLOCK;
…		…
1118	{	1565	{
1119	dTHX;	1566	dTHX;
1120	struct transfer_args ta;	1567	struct transfer_args ta;
1121		1568
1122	prepare_schedule (aTHX_ &ta);	1569	prepare_schedule (aTHX_ &ta);
1123	TRANSFER (ta);	1570	TRANSFER (ta, 1);
1124	}	1571	}
1125		1572
1126	static int	1573	static int
1127	api_cede (void)	1574	api_cede (void)
1128	{	1575	{
1129	dTHX;	1576	dTHX;
1130	struct transfer_args ta;	1577	struct transfer_args ta;
1131		1578
1132	prepare_cede (aTHX_ &ta);	1579	prepare_cede (aTHX_ &ta);
1133		1580
1134	if (ta.prev != ta.next)	1581	if (expect_true (ta.prev != ta.next))
1135	{	1582	{
1136	TRANSFER (ta);	1583	TRANSFER (ta, 1);
1137	return 1;	1584	return 1;
1138	}	1585	}
1139	else	1586	else
1140	return 0;	1587	return 0;
1141	}	1588	}
…		…
1146	dTHX;	1593	dTHX;
1147	struct transfer_args ta;	1594	struct transfer_args ta;
1148		1595
1149	if (prepare_cede_notself (aTHX_ &ta))	1596	if (prepare_cede_notself (aTHX_ &ta))
1150	{	1597	{
1151	TRANSFER (ta);	1598	TRANSFER (ta, 1);
1152	return 1;	1599	return 1;
1153	}	1600	}
1154	else	1601	else
1155	return 0;	1602	return 0;
1156	}	1603	}
1157		1604
		1605	static void
		1606	api_trace (SV *coro_sv, int flags)
		1607	{
		1608	dTHX;
		1609	struct coro *coro = SvSTATE (coro_sv);
		1610
		1611	if (flags & CC_TRACE)
		1612	{
		1613	if (!coro->cctx)
		1614	coro->cctx = cctx_new ();
		1615	else if (!(coro->cctx->flags & CC_TRACE))
		1616	croak ("cannot enable tracing on coroutine with custom stack");
		1617
		1618	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1619	}
		1620	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1621	{
		1622	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1623
		1624	if (coro->flags & CF_RUNNING)
		1625	PL_runops = RUNOPS_DEFAULT;
		1626	else
		1627	coro->slot->runops = RUNOPS_DEFAULT;
		1628	}
		1629	}
		1630
		1631	static int
		1632	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1633	{
		1634	AV *padlist;
		1635	AV *av = (AV *)mg->mg_obj;
		1636
		1637	abort ();
		1638
		1639	return 0;
		1640	}
		1641
		1642	static MGVTBL coro_gensub_vtbl = {
		1643	0, 0, 0, 0,
		1644	coro_gensub_free
		1645	};
		1646
1158	MODULE = Coro::State PACKAGE = Coro::State	1647	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1648
1160	PROTOTYPES: DISABLE	1649	PROTOTYPES: DISABLE
1161		1650
1162	BOOT:	1651	BOOT:
1163	{	1652	{
1164	#ifdef USE_ITHREADS	1653	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1654	MUTEX_INIT (&coro_mutex);
1166	#endif	1655	#endif
1167	BOOT_PAGESIZE;	1656	BOOT_PAGESIZE;
1168		1657
		1658	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1659	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1660
		1661	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1662	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1663	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1664
		1665	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1666	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1667	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1668
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1669	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1670
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1671	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1672	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1673	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1674	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1675
1179	main_mainstack = PL_mainstack;	1676	main_mainstack = PL_mainstack;
		1677	main_top_env = PL_top_env;
1180		1678
		1679	while (main_top_env->je_prev)
		1680	main_top_env = main_top_env->je_prev;
		1681
1181	coroapi.ver = CORO_API_VERSION;	1682	coroapi.ver = CORO_API_VERSION;
		1683	coroapi.rev = CORO_API_REVISION;
1182	coroapi.transfer = api_transfer;	1684	coroapi.transfer = api_transfer;
1183		1685
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1686	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185	}	1687	}
1186		1688
1187	SV *	1689	SV *
1188	new (char *klass, ...)	1690	new (char *klass, ...)
1189	CODE:	1691	CODE:
1190	{	1692	{
1191	struct coro *coro;	1693	struct coro *coro;
		1694	MAGIC *mg;
1192	HV *hv;	1695	HV *hv;
1193	int i;	1696	int i;
1194		1697
1195	Newz (0, coro, 1, struct coro);	1698	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1699	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1700	coro->flags = CF_NEW;
1199		1701
		1702	if (coro_first) coro_first->prev = coro;
		1703	coro->next = coro_first;
		1704	coro_first = coro;
		1705
1200	hv = newHV ();	1706	coro->hv = hv = newHV ();
1201	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1707	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1708	mg->mg_flags |= MGf_DUP;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1709	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1710
		1711	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1712	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1713	av_push (coro->args, newSVsv (ST (i)));
1206	}	1714	}
1207	OUTPUT:	1715	OUTPUT:
1208	RETVAL	1716	RETVAL
1209		1717
1210	int	1718	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1719	# function to increase chances that they all will call transfer with the same
1212	CODE:	1720	# stack offset
1213	RETVAL = api_save (coro, new_save);
1214	OUTPUT:
1215	RETVAL
1216
1217	int
1218	save_also (SV *coro_sv, int save_also)
1219	CODE:
1220	{
1221	struct coro *coro = SvSTATE (coro_sv);
1222	RETVAL = coro->save;
1223	coro->save |= save_also;
1224	}
1225	OUTPUT:
1226	RETVAL
1227
1228	void	1721	void
1229	_set_stacklevel (...)	1722	_set_stacklevel (...)
1230	ALIAS:	1723	ALIAS:
1231	Coro::State::transfer = 1	1724	Coro::State::transfer = 1
1232	Coro::schedule = 2	1725	Coro::schedule = 2
…		…
1234	Coro::cede_notself = 4	1727	Coro::cede_notself = 4
1235	CODE:	1728	CODE:
1236	{	1729	{
1237	struct transfer_args ta;	1730	struct transfer_args ta;
1238		1731
		1732	PUTBACK;
1239	switch (ix)	1733	switch (ix)
1240	{	1734	{
1241	case 0:	1735	case 0:
1242	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1736	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243	ta.next = 0;	1737	ta.next = 0;
…		…
1262	if (!prepare_cede_notself (aTHX_ &ta))	1756	if (!prepare_cede_notself (aTHX_ &ta))
1263	XSRETURN_EMPTY;	1757	XSRETURN_EMPTY;
1264		1758
1265	break;	1759	break;
1266	}	1760	}
		1761	SPAGAIN;
1267		1762
1268	BARRIER;	1763	BARRIER;
		1764	PUTBACK;
1269	TRANSFER (ta);	1765	TRANSFER (ta, 0);
1270		1766	SPAGAIN; /* might be the sp of a different coroutine now */
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1767	/* be extra careful not to ever do anything after TRANSFER */
1272	XSRETURN_YES;
1273	}	1768	}
1274		1769
1275	bool	1770	bool
1276	_destroy (SV *coro_sv)	1771	_destroy (SV *coro_sv)
1277	CODE:	1772	CODE:
1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1773	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1279	OUTPUT:	1774	OUTPUT:
1280	RETVAL	1775	RETVAL
1281		1776
1282	void	1777	void
1283	_exit (code)	1778	_exit (int code)
1284	int code
1285	PROTOTYPE: $	1779	PROTOTYPE: $
1286	CODE:	1780	CODE:
1287	_exit (code);	1781	_exit (code);
1288		1782
1289	int	1783	int
…		…
1307	CODE:	1801	CODE:
1308	RETVAL = cctx_idle;	1802	RETVAL = cctx_idle;
1309	OUTPUT:	1803	OUTPUT:
1310	RETVAL	1804	RETVAL
1311		1805
		1806	void
		1807	list ()
		1808	PPCODE:
		1809	{
		1810	struct coro *coro;
		1811	for (coro = coro_first; coro; coro = coro->next)
		1812	if (coro->hv)
		1813	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1814	}
		1815
		1816	void
		1817	call (Coro::State coro, SV *coderef)
		1818	ALIAS:
		1819	eval = 1
		1820	CODE:
		1821	{
		1822	if (coro->mainstack)
		1823	{
		1824	struct coro temp;
		1825
		1826	if (!(coro->flags & CF_RUNNING))
		1827	{
		1828	PUTBACK;
		1829	save_perl (aTHX_ &temp);
		1830	load_perl (aTHX_ coro);
		1831	}
		1832
		1833	{
		1834	dSP;
		1835	ENTER;
		1836	SAVETMPS;
		1837	PUTBACK;
		1838	PUSHSTACK;
		1839	PUSHMARK (SP);
		1840
		1841	if (ix)
		1842	eval_sv (coderef, 0);
		1843	else
		1844	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1845
		1846	POPSTACK;
		1847	SPAGAIN;
		1848	FREETMPS;
		1849	LEAVE;
		1850	PUTBACK;
		1851	}
		1852
		1853	if (!(coro->flags & CF_RUNNING))
		1854	{
		1855	save_perl (aTHX_ coro);
		1856	load_perl (aTHX_ &temp);
		1857	SPAGAIN;
		1858	}
		1859	}
		1860	}
		1861
		1862	SV *
		1863	is_ready (Coro::State coro)
		1864	PROTOTYPE: $
		1865	ALIAS:
		1866	is_ready = CF_READY
		1867	is_running = CF_RUNNING
		1868	is_new = CF_NEW
		1869	is_destroyed = CF_DESTROYED
		1870	CODE:
		1871	RETVAL = boolSV (coro->flags & ix);
		1872	OUTPUT:
		1873	RETVAL
		1874
		1875	void
		1876	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1877
		1878	SV *
		1879	has_cctx (Coro::State coro)
		1880	PROTOTYPE: $
		1881	CODE:
		1882	RETVAL = boolSV (!!coro->cctx);
		1883	OUTPUT:
		1884	RETVAL
		1885
		1886	int
		1887	is_traced (Coro::State coro)
		1888	PROTOTYPE: $
		1889	CODE:
		1890	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1891	OUTPUT:
		1892	RETVAL
		1893
		1894	IV
		1895	rss (Coro::State coro)
		1896	PROTOTYPE: $
		1897	ALIAS:
		1898	usecount = 1
		1899	CODE:
		1900	switch (ix)
		1901	{
		1902	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1903	case 1: RETVAL = coro->usecount; break;
		1904	}
		1905	OUTPUT:
		1906	RETVAL
		1907
		1908	void
		1909	force_cctx ()
		1910	CODE:
		1911	struct coro *coro = SvSTATE (coro_current);
		1912	coro->cctx->idle_sp = 0;
		1913
		1914	void
		1915	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1916	PROTOTYPE: $;$
		1917	CODE:
		1918	SvREFCNT_dec (self->throw);
		1919	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1920
		1921	void
		1922	swap_defsv (Coro::State self)
		1923	PROTOTYPE: $
		1924	ALIAS:
		1925	swap_defav = 1
		1926	CODE:
		1927	if (!self->slot)
		1928	croak ("cannot swap state with coroutine that has no saved state");
		1929	else
		1930	{
		1931	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		1932	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		1933
		1934	SV *tmp = *src; *src = *dst; *dst = tmp;
		1935	}
		1936
1312	MODULE = Coro::State PACKAGE = Coro	1937	MODULE = Coro::State PACKAGE = Coro
1313		1938
1314	BOOT:	1939	BOOT:
1315	{	1940	{
1316	int i;	1941	int i;
1317		1942
		1943	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1944	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1945	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1946
		1947	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1948	SvREADONLY_on (coro_current);
		1949
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1950	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1951
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1952	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1953	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1954	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1955	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1956	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1957	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1958
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1959	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1960	coro_ready[i] = newAV ();
1332		1961
1333	{	1962	{
1334	SV *sv = perl_get_sv("Coro::API", 1);	1963	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1964	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335		1965
1336	coroapi.schedule = api_schedule;	1966	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1967	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1968	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1969	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1970	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1971	coroapi.nready = &coro_nready;
…		…
1352	_set_current (SV *current)	1981	_set_current (SV *current)
1353	PROTOTYPE: $	1982	PROTOTYPE: $
1354	CODE:	1983	CODE:
1355	SvREFCNT_dec (SvRV (coro_current));	1984	SvREFCNT_dec (SvRV (coro_current));
1356	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	1985	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1986
		1987	void
		1988	_set_readyhook (SV *hook)
		1989	PROTOTYPE: $
		1990	CODE:
		1991	LOCK;
		1992	SvREFCNT_dec (coro_readyhook);
		1993	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		1994	UNLOCK;
1357		1995
1358	int	1996	int
1359	prio (Coro::State coro, int newprio = 0)	1997	prio (Coro::State coro, int newprio = 0)
1360	ALIAS:	1998	ALIAS:
1361	nice = 1	1999	nice = 1
…		…
1383	CODE:	2021	CODE:
1384	RETVAL = boolSV (api_ready (self));	2022	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	2023	OUTPUT:
1386	RETVAL	2024	RETVAL
1387		2025
1388	SV *
1389	is_ready (SV *self)
1390	PROTOTYPE: $
1391	CODE:
1392	RETVAL = boolSV (api_is_ready (self));
1393	OUTPUT:
1394	RETVAL
1395
1396	int	2026	int
1397	nready (...)	2027	nready (...)
1398	PROTOTYPE:	2028	PROTOTYPE:
1399	CODE:	2029	CODE:
1400	RETVAL = coro_nready;	2030	RETVAL = coro_nready;
1401	OUTPUT:	2031	OUTPUT:
1402	RETVAL	2032	RETVAL
1403		2033
		2034	# for async_pool speedup
		2035	void
		2036	_pool_1 (SV *cb)
		2037	CODE:
		2038	{
		2039	struct coro *coro = SvSTATE (coro_current);
		2040	HV *hv = (HV *)SvRV (coro_current);
		2041	AV *defav = GvAV (PL_defgv);
		2042	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		2043	AV *invoke_av;
		2044	int i, len;
		2045
		2046	if (!invoke)
		2047	{
		2048	SV *old = PL_diehook;
		2049	PL_diehook = 0;
		2050	SvREFCNT_dec (old);
		2051	croak ("\3async_pool terminate\2\n");
		2052	}
		2053
		2054	SvREFCNT_dec (coro->saved_deffh);
		2055	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		2056
		2057	hv_store (hv, "desc", sizeof ("desc") - 1,
		2058	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		2059
		2060	invoke_av = (AV *)SvRV (invoke);
		2061	len = av_len (invoke_av);
		2062
		2063	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		2064
		2065	if (len > 0)
		2066	{
		2067	av_fill (defav, len - 1);
		2068	for (i = 0; i < len; ++i)
		2069	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		2070	}
		2071
		2072	SvREFCNT_dec (invoke);
		2073	}
		2074
		2075	void
		2076	_pool_2 (SV *cb)
		2077	CODE:
		2078	{
		2079	struct coro *coro = SvSTATE (coro_current);
		2080
		2081	sv_setsv (cb, &PL_sv_undef);
		2082
		2083	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2084	coro->saved_deffh = 0;
		2085
		2086	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		2087	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2088	{
		2089	SV *old = PL_diehook;
		2090	PL_diehook = 0;
		2091	SvREFCNT_dec (old);
		2092	croak ("\3async_pool terminate\2\n");
		2093	}
		2094
		2095	av_clear (GvAV (PL_defgv));
		2096	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		2097	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		2098
		2099	coro->prio = 0;
		2100
		2101	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		2102	api_trace (coro_current, 0);
		2103
		2104	av_push (av_async_pool, newSVsv (coro_current));
		2105	}
		2106
		2107	#if 0
		2108
		2109	void
		2110	_generator_call (...)
		2111	PROTOTYPE: @
		2112	PPCODE:
		2113	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2114	xxxx
		2115	abort ();
		2116
		2117	SV *
		2118	gensub (SV *sub, ...)
		2119	PROTOTYPE: &;@
		2120	CODE:
		2121	{
		2122	struct coro *coro;
		2123	MAGIC *mg;
		2124	CV *xcv;
		2125	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2126	int i;
		2127
		2128	CvGV (ncv) = CvGV (cv);
		2129	CvFILE (ncv) = CvFILE (cv);
		2130
		2131	Newz (0, coro, 1, struct coro);
		2132	coro->args = newAV ();
		2133	coro->flags = CF_NEW;
		2134
		2135	av_extend (coro->args, items - 1);
		2136	for (i = 1; i < items; i++)
		2137	av_push (coro->args, newSVsv (ST (i)));
		2138
		2139	CvISXSUB_on (ncv);
		2140	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2141
		2142	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2143
		2144	CvXSUB (ncv) = CvXSUB (xcv);
		2145	CvANON_on (ncv);
		2146
		2147	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2148	RETVAL = newRV_noinc ((SV *)ncv);
		2149	}
		2150	OUTPUT:
		2151	RETVAL
		2152
		2153	#endif
		2154
		2155
1404	MODULE = Coro::State PACKAGE = Coro::AIO	2156	MODULE = Coro::State PACKAGE = Coro::AIO
1405		2157
1406	SV *	2158	SV *
1407	_get_state ()	2159	_get_state ()
1408	CODE:	2160	CODE:
…		…
1433	PL_laststype = data->laststype;	2185	PL_laststype = data->laststype;
1434	PL_laststatval = data->laststatval;	2186	PL_laststatval = data->laststatval;
1435	PL_statcache = data->statcache;	2187	PL_statcache = data->statcache;
1436	}	2188	}
1437		2189
		2190
		2191	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2192
		2193	BOOT:
		2194	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2195
		2196	SV *
		2197	_schedule (...)
		2198	PROTOTYPE: @
		2199	CODE:
		2200	{
		2201	static int incede;
		2202
		2203	api_cede_notself ();
		2204
		2205	++incede;
		2206	while (coro_nready >= incede && api_cede ())
		2207	;
		2208
		2209	sv_setsv (sv_activity, &PL_sv_undef);
		2210	if (coro_nready >= incede)
		2211	{
		2212	PUSHMARK (SP);
		2213	PUTBACK;
		2214	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2215	SPAGAIN;
		2216	}
		2217
		2218	--incede;
		2219	}
		2220

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