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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.195 by root, Sat Oct 6 00:35:41 2007 UTC vs.
Revision 1.258 by root, Sun Nov 9 23:08:49 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"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
41	#else	52	#else
42	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
43	#endif	54	#endif
44		55
45	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
46	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
47		58
48	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
49	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
50	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
51	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif
79
80	/* 5.8.8 */
81	#ifndef GV_NOTQUAL
82	# define GV_NOTQUAL 0
83	#endif
84	#ifndef newSV
85	# define newSV(l) NEWSV(0,l)
86	#endif	107	#endif
87		108
88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	109	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89	# undef CORO_STACKGUARD	110	# undef CORO_STACKGUARD
90	#endif	111	#endif
…		…
121	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
122		143
123	#include "CoroAPI.h"	144	#include "CoroAPI.h"
124		145
125	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
126	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
127	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
128	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
129	#else	155	#else
		156
130	# define LOCK (void)0	157	# define LOCK (void)0
131	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
132	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
133		166
134	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
135	struct io_state	168	struct io_state
136	{	169	{
		170	AV *res;
137	int errorno;	171	int errorno;
138	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
139	int laststatval;	173	int laststatval;
140	Stat_t statcache;	174	Stat_t statcache;
141	};	175	};
142		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
143	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
144	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
145	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
146	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
147	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
148	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
149		186
150	static GV *irsgv; /* $/ */	187	static GV *irsgv; /* $/ */
151	static GV *stdoutgv; /* *STDOUT */	188	static GV *stdoutgv; /* *STDOUT */
		189	static SV *rv_diehook;
		190	static SV *rv_warnhook;
		191	static HV *hv_sig; /* %SIG */
152		192
153	/* async_pool helper stuff */	193	/* async_pool helper stuff */
154	static SV *sv_pool_rss;	194	static SV *sv_pool_rss;
155	static SV *sv_pool_size;	195	static SV *sv_pool_size;
156	static AV *av_async_pool;	196	static AV *av_async_pool;
		197
		198	/* Coro::AnyEvent */
		199	static SV *sv_activity;
157		200
158	static struct coro_cctx *cctx_first;	201	static struct coro_cctx *cctx_first;
159	static int cctx_count, cctx_idle;	202	static int cctx_count, cctx_idle;
160		203
161	enum {	204	enum {
…		…
179	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	222	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
180	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	223	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
181	JMPENV *top_env;	224	JMPENV *top_env;
182	coro_context cctx;	225	coro_context cctx;
183		226
		227	U32 gen;
184	#if CORO_USE_VALGRIND	228	#if CORO_USE_VALGRIND
185	int valgrind_id;	229	int valgrind_id;
186	#endif	230	#endif
187	unsigned char flags;	231	unsigned char flags;
188	} coro_cctx;	232	} coro_cctx;
…		…
192	CF_READY = 0x0002, /* coroutine is ready */	236	CF_READY = 0x0002, /* coroutine is ready */
193	CF_NEW = 0x0004, /* has never been switched to */	237	CF_NEW = 0x0004, /* has never been switched to */
194	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	238	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
195	};	239	};
196		240
		241	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		242	typedef struct {
		243	SV *defsv;
		244	AV *defav;
		245	SV *errsv;
		246	SV *irsgv;
		247	#define VAR(name,type) type name;
		248	# include "state.h"
		249	#undef VAR
		250	} perl_slots;
		251
		252	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		253
197	/* this is a structure representing a perl-level coroutine */	254	/* this is a structure representing a perl-level coroutine */
198	struct coro {	255	struct coro {
199	/* the c coroutine allocated to this perl coroutine, if any */	256	/* the c coroutine allocated to this perl coroutine, if any */
200	coro_cctx *cctx;	257	coro_cctx *cctx;
201		258
		259	/* process data */
		260	AV *mainstack;
		261	perl_slots *slot; /* basically the saved sp */
		262
202	/* data associated with this coroutine (initial args) */	263	AV *args; /* data associated with this coroutine (initial args) */
203	AV *args;	264	int refcnt; /* coroutines are refcounted, yes */
204	int refcnt;
205	int flags; /* CF_ flags */	265	int flags; /* CF_ flags */
206		266	HV *hv; /* the perl hash associated with this coro, if any */
207	/* optionally saved, might be zero */
208	AV *defav; /* @_ */
209	SV *defsv; /* $_ */
210	SV *errsv; /* $@ */
211	SV *deffh; /* default filehandle */
212	SV *irssv; /* $/ */
213	SV *irssv_sv; /* real $/ cache */
214
215	#define VAR(name,type) type name;
216	# include "state.h"
217	#undef VAR
218		267
219	/* statistics */	268	/* statistics */
220	int usecount; /* number of transfers to this coro */	269	int usecount; /* number of transfers to this coro */
221		270
222	/* coro process data */	271	/* coro process data */
223	int prio;	272	int prio;
224	//SV *throw;	273	SV *throw; /* exception to be thrown */
225		274
226	/* async_pool */	275	/* async_pool */
227	SV *saved_deffh;	276	SV *saved_deffh;
228		277
229	/* linked list */	278	/* linked list */
230	struct coro *next, *prev;	279	struct coro *next, *prev;
231	HV *hv; /* the perl hash associated with this coro, if any */
232	};	280	};
233		281
234	typedef struct coro *Coro__State;	282	typedef struct coro *Coro__State;
235	typedef struct coro *Coro__State_or_hashref;	283	typedef struct coro *Coro__State_or_hashref;
236		284
…		…
243	#define PRIO_IDLE -3	291	#define PRIO_IDLE -3
244	#define PRIO_MIN -4	292	#define PRIO_MIN -4
245		293
246	/* for Coro.pm */	294	/* for Coro.pm */
247	static SV *coro_current;	295	static SV *coro_current;
		296	static SV *coro_readyhook;
248	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	297	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
249	static int coro_nready;	298	static int coro_nready;
250	static struct coro *coro_first;	299	static struct coro *coro_first;
251		300
252	/** lowlevel stuff **********************************************************/	301	/** lowlevel stuff **********************************************************/
253		302
		303	static SV *
		304	coro_get_sv (pTHX_ const char *name, int create)
		305	{
		306	#if PERL_VERSION_ATLEAST (5,10,0)
		307	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		308	get_sv (name, create);
		309	#endif
		310	return get_sv (name, create);
		311	}
		312
		313	static AV *
		314	coro_get_av (pTHX_ const char *name, int create)
		315	{
		316	#if PERL_VERSION_ATLEAST (5,10,0)
		317	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		318	get_av (name, create);
		319	#endif
		320	return get_av (name, create);
		321	}
		322
		323	static HV *
		324	coro_get_hv (pTHX_ const char *name, int create)
		325	{
		326	#if PERL_VERSION_ATLEAST (5,10,0)
		327	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		328	get_hv (name, create);
		329	#endif
		330	return get_hv (name, create);
		331	}
		332
254	static AV *	333	static AV *
255	coro_clone_padlist (pTHX_ CV *cv)	334	coro_clone_padlist (pTHX_ CV *cv)
256	{	335	{
257	AV *padlist = CvPADLIST (cv);	336	AV *padlist = CvPADLIST (cv);
258	AV *newpadlist, *newpad;	337	AV *newpadlist, *newpad;
259		338
260	newpadlist = newAV ();	339	newpadlist = newAV ();
261	AvREAL_off (newpadlist);	340	AvREAL_off (newpadlist);
262	#if PERL_VERSION_ATLEAST (5,9,0)	341	#if PERL_VERSION_ATLEAST (5,10,0)
263	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	342	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
264	#else	343	#else
265	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	344	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
266	#endif	345	#endif
267	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	346	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
268	--AvFILLp (padlist);	347	--AvFILLp (padlist);
269		348
270	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	349	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
271	av_store (newpadlist, 1, (SV *)newpad);	350	av_store (newpadlist, 1, (SV *)newpad);
272		351
273	return newpadlist;	352	return newpadlist;
274	}	353	}
275		354
…		…
305		384
306	/* casting is fun. */	385	/* casting is fun. */
307	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	386	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
308	free_padlist (aTHX_ padlist);	387	free_padlist (aTHX_ padlist);
309		388
310	SvREFCNT_dec (av);	389	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
311		390
312	return 0;	391	return 0;
313	}	392	}
314		393
315	#define PERL_MAGIC_coro PERL_MAGIC_ext	394	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		395	#define CORO_MAGIC_type_state PERL_MAGIC_ext
316		396
317	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	397	static MGVTBL coro_cv_vtbl = {
		398	0, 0, 0, 0,
		399	coro_cv_free
		400	};
318		401
319	#define CORO_MAGIC(cv) \	402	#define CORO_MAGIC(sv, type) \
320	SvMAGIC (cv) \	403	SvMAGIC (sv) \
321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	404	? SvMAGIC (sv)->mg_type == type \
322	? SvMAGIC (cv) \	405	? SvMAGIC (sv) \
323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	406	: mg_find (sv, type) \
324	: 0	407	: 0
		408
		409	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		410	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
325		411
326	static struct coro *	412	static struct coro *
327	SvSTATE_ (pTHX_ SV *coro)	413	SvSTATE_ (pTHX_ SV *coro)
328	{	414	{
329	HV *stash;	415	HV *stash;
…		…
341	/* very slow, but rare, check */	427	/* very slow, but rare, check */
342	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	428	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
343	croak ("Coro::State object required");	429	croak ("Coro::State object required");
344	}	430	}
345		431
346	mg = CORO_MAGIC (coro);	432	mg = CORO_MAGIC_state (coro);
347	return (struct coro *)mg->mg_ptr;	433	return (struct coro *)mg->mg_ptr;
348	}	434	}
349		435
350	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	436	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
351		437
352	/* the next two functions merely cache the padlists */	438	/* the next two functions merely cache the padlists */
353	static void	439	static void
354	get_padlist (pTHX_ CV *cv)	440	get_padlist (pTHX_ CV *cv)
355	{	441	{
356	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
357	AV *av;	443	AV *av;
358		444
359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	445	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	446	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
361	else	447	else
362	{	448	{
363	#if CORO_PREFER_PERL_FUNCTIONS	449	#if CORO_PREFER_PERL_FUNCTIONS
364	/* this is probably cleaner, but also slower? */	450	/* this is probably cleaner? but also slower! */
		451	/* in practise, it seems to be less stable */
365	CV *cp = Perl_cv_clone (cv);	452	CV *cp = Perl_cv_clone (cv);
366	CvPADLIST (cv) = CvPADLIST (cp);	453	CvPADLIST (cv) = CvPADLIST (cp);
367	CvPADLIST (cp) = 0;	454	CvPADLIST (cp) = 0;
368	SvREFCNT_dec (cp);	455	SvREFCNT_dec (cp);
369	#else	456	#else
…		…
373	}	460	}
374		461
375	static void	462	static void
376	put_padlist (pTHX_ CV *cv)	463	put_padlist (pTHX_ CV *cv)
377	{	464	{
378	MAGIC *mg = CORO_MAGIC (cv);	465	MAGIC *mg = CORO_MAGIC_cv (cv);
379	AV *av;	466	AV *av;
380		467
381	if (expect_false (!mg))	468	if (expect_false (!mg))
382	{	469	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
385	mg->mg_virtual = &vtbl_coro;
386	mg->mg_obj = (SV *)newAV ();
387	}
388		470
389	av = (AV *)mg->mg_obj;	471	av = (AV *)mg->mg_obj;
390		472
391	if (expect_false (AvFILLp (av) >= AvMAX (av)))	473	if (expect_false (AvFILLp (av) >= AvMAX (av)))
392	av_extend (av, AvMAX (av) + 1);	474	av_extend (av, AvMAX (av) + 1);
…		…
397	/** load & save, init *******************************************************/	479	/** load & save, init *******************************************************/
398		480
399	static void	481	static void
400	load_perl (pTHX_ Coro__State c)	482	load_perl (pTHX_ Coro__State c)
401	{	483	{
		484	perl_slots *slot = c->slot;
		485	c->slot = 0;
		486
		487	PL_mainstack = c->mainstack;
		488
		489	GvSV (PL_defgv) = slot->defsv;
		490	GvAV (PL_defgv) = slot->defav;
		491	GvSV (PL_errgv) = slot->errsv;
		492	GvSV (irsgv) = slot->irsgv;
		493
402	#define VAR(name,type) PL_ ## name = c->name;	494	#define VAR(name,type) PL_ ## name = slot->name;
403	# include "state.h"	495	# include "state.h"
404	#undef VAR	496	#undef VAR
405
406	GvSV (PL_defgv) = c->defsv;
407	GvAV (PL_defgv) = c->defav;
408	GvSV (PL_errgv) = c->errsv;
409	GvSV (irsgv) = c->irssv_sv;
410		497
411	{	498	{
412	dSP;	499	dSP;
		500
413	CV *cv;	501	CV *cv;
414		502
415	/* now do the ugly restore mess */	503	/* now do the ugly restore mess */
416	while (expect_true (cv = (CV *)POPs))	504	while (expect_true (cv = (CV *)POPs))
417	{	505	{
…		…
452		540
453	if (expect_true (CvDEPTH (cv)))	541	if (expect_true (CvDEPTH (cv)))
454	{	542	{
455	EXTEND (SP, 3);	543	EXTEND (SP, 3);
456	PUSHs ((SV *)CvPADLIST (cv));	544	PUSHs ((SV *)CvPADLIST (cv));
457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	545	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
458	PUSHs ((SV *)cv);	546	PUSHs ((SV *)cv);
459		547
460	CvDEPTH (cv) = 0;	548	CvDEPTH (cv) = 0;
461	get_padlist (aTHX_ cv);	549	get_padlist (aTHX_ cv);
462	}	550	}
…		…
472	}	560	}
473		561
474	PUTBACK;	562	PUTBACK;
475	}	563	}
476		564
		565	/* allocate some space on the context stack for our purposes */
		566	/* we manually unroll here, as usually 2 slots is enough */
		567	if (SLOT_COUNT >= 1) CXINC;
		568	if (SLOT_COUNT >= 2) CXINC;
		569	if (SLOT_COUNT >= 3) CXINC;
		570	{
		571	int i;
		572	for (i = 3; i < SLOT_COUNT; ++i)
		573	CXINC;
		574	}
		575	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		576
		577	c->mainstack = PL_mainstack;
		578
		579	{
		580	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		581
477	c->defav = GvAV (PL_defgv);	582	slot->defav = GvAV (PL_defgv);
478	c->defsv = DEFSV;	583	slot->defsv = DEFSV;
479	c->errsv = ERRSV;	584	slot->errsv = ERRSV;
480	c->irssv_sv = GvSV (irsgv);	585	slot->irsgv = GvSV (irsgv);
481		586
482	#define VAR(name,type)c->name = PL_ ## name;	587	#define VAR(name,type) slot->name = PL_ ## name;
483	# include "state.h"	588	# include "state.h"
484	#undef VAR	589	#undef VAR
		590	}
485	}	591	}
486		592
487	/*	593	/*
488	* allocate various perl stacks. This is an exact copy	594	* allocate various perl stacks. This is an exact copy
489	* of perl.c:init_stacks, except that it uses less memory	595	* of perl.c:init_stacks, except that it uses less memory
…		…
494	# define coro_init_stacks init_stacks	600	# define coro_init_stacks init_stacks
495	#else	601	#else
496	static void	602	static void
497	coro_init_stacks (pTHX)	603	coro_init_stacks (pTHX)
498	{	604	{
499	PL_curstackinfo = new_stackinfo(64, 6);	605	PL_curstackinfo = new_stackinfo(32, 8);
500	PL_curstackinfo->si_type = PERLSI_MAIN;	606	PL_curstackinfo->si_type = PERLSI_MAIN;
501	PL_curstack = PL_curstackinfo->si_stack;	607	PL_curstack = PL_curstackinfo->si_stack;
502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	608	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
503		609
504	PL_stack_base = AvARRAY(PL_curstack);	610	PL_stack_base = AvARRAY(PL_curstack);
505	PL_stack_sp = PL_stack_base;	611	PL_stack_sp = PL_stack_base;
506	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	612	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
507		613
508	New(50,PL_tmps_stack,64,SV*);	614	New(50,PL_tmps_stack,32,SV*);
509	PL_tmps_floor = -1;	615	PL_tmps_floor = -1;
510	PL_tmps_ix = -1;	616	PL_tmps_ix = -1;
511	PL_tmps_max = 64;	617	PL_tmps_max = 32;
512		618
513	New(54,PL_markstack,16,I32);	619	New(54,PL_markstack,16,I32);
514	PL_markstack_ptr = PL_markstack;	620	PL_markstack_ptr = PL_markstack;
515	PL_markstack_max = PL_markstack + 16;	621	PL_markstack_max = PL_markstack + 16;
516		622
517	#ifdef SET_MARK_OFFSET	623	#ifdef SET_MARK_OFFSET
518	SET_MARK_OFFSET;	624	SET_MARK_OFFSET;
519	#endif	625	#endif
520		626
521	New(54,PL_scopestack,16,I32);	627	New(54,PL_scopestack,8,I32);
522	PL_scopestack_ix = 0;	628	PL_scopestack_ix = 0;
523	PL_scopestack_max = 16;	629	PL_scopestack_max = 8;
524		630
525	New(54,PL_savestack,64,ANY);	631	New(54,PL_savestack,24,ANY);
526	PL_savestack_ix = 0;	632	PL_savestack_ix = 0;
527	PL_savestack_max = 64;	633	PL_savestack_max = 24;
528		634
529	#if !PERL_VERSION_ATLEAST (5,9,0)	635	#if !PERL_VERSION_ATLEAST (5,10,0)
530	New(54,PL_retstack,4,OP*);	636	New(54,PL_retstack,4,OP*);
531	PL_retstack_ix = 0;	637	PL_retstack_ix = 0;
532	PL_retstack_max = 4;	638	PL_retstack_max = 4;
533	#endif	639	#endif
534	}	640	}
…		…
536		642
537	/*	643	/*
538	* destroy the stacks, the callchain etc...	644	* destroy the stacks, the callchain etc...
539	*/	645	*/
540	static void	646	static void
541	coro_destroy_stacks (pTHX)	647	coro_destruct_stacks (pTHX)
542	{	648	{
543	while (PL_curstackinfo->si_next)	649	while (PL_curstackinfo->si_next)
544	PL_curstackinfo = PL_curstackinfo->si_next;	650	PL_curstackinfo = PL_curstackinfo->si_next;
545		651
546	while (PL_curstackinfo)	652	while (PL_curstackinfo)
…		…
557		663
558	Safefree (PL_tmps_stack);	664	Safefree (PL_tmps_stack);
559	Safefree (PL_markstack);	665	Safefree (PL_markstack);
560	Safefree (PL_scopestack);	666	Safefree (PL_scopestack);
561	Safefree (PL_savestack);	667	Safefree (PL_savestack);
562	#if !PERL_VERSION_ATLEAST (5,9,0)	668	#if !PERL_VERSION_ATLEAST (5,10,0)
563	Safefree (PL_retstack);	669	Safefree (PL_retstack);
564	#endif	670	#endif
565	}	671	}
566		672
567	static size_t	673	static size_t
…		…
569	{	675	{
570	size_t rss = sizeof (*coro);	676	size_t rss = sizeof (*coro);
571		677
572	if (coro->mainstack)	678	if (coro->mainstack)
573	{	679	{
		680	perl_slots tmp_slot;
		681	perl_slots *slot;
		682
574	if (coro->flags & CF_RUNNING)	683	if (coro->flags & CF_RUNNING)
575	{	684	{
		685	slot = &tmp_slot;
		686
576	#define VAR(name,type)coro->name = PL_ ## name;	687	#define VAR(name,type) slot->name = PL_ ## name;
577	# include "state.h"	688	# include "state.h"
578	#undef VAR	689	#undef VAR
579	}	690	}
		691	else
		692	slot = coro->slot;
580		693
		694	if (slot)
		695	{
581	rss += sizeof (coro->curstackinfo);	696	rss += sizeof (slot->curstackinfo);
582	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
583	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	697	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
584	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	698	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
585	rss += coro->tmps_max * sizeof (SV *);	699	rss += slot->tmps_max * sizeof (SV *);
586	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	700	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
587	rss += coro->scopestack_max * sizeof (I32);	701	rss += slot->scopestack_max * sizeof (I32);
588	rss += coro->savestack_max * sizeof (ANY);	702	rss += slot->savestack_max * sizeof (ANY);
589		703
590	#if !PERL_VERSION_ATLEAST (5,9,0)	704	#if !PERL_VERSION_ATLEAST (5,10,0)
591	rss += coro->retstack_max * sizeof (OP *);	705	rss += slot->retstack_max * sizeof (OP *);
592	#endif	706	#endif
		707	}
593	}	708	}
594		709
595	return rss;	710	return rss;
596	}	711	}
597		712
598	/** coroutine stack handling ************************************************/	713	/** coroutine stack handling ************************************************/
		714
		715	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		716	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		718
		719	/* apparently < 5.8.8 */
		720	#ifndef MgPV_nolen_const
		721	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		722	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		723	(const char*)(mg)->mg_ptr)
		724	#endif
		725
		726	/*
		727	* This overrides the default magic get method of %SIG elements.
		728	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		729	* and instead of tryign to save and restore the hash elements, we just provide
		730	* readback here.
		731	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		732	* not expecting this to actually change the hook. This is a potential problem
		733	* when a schedule happens then, but we ignore this.
		734	*/
		735	static int
		736	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		737	{
		738	const char *s = MgPV_nolen_const (mg);
		739
		740	if (*s == '_')
		741	{
		742	SV **svp = 0;
		743
		744	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		745	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		746
		747	if (svp)
		748	{
		749	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		750	return 0;
		751	}
		752	}
		753
		754	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		755	}
		756
		757	static int
		758	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		759	{
		760	const char *s = MgPV_nolen_const (mg);
		761
		762	if (*s == '_')
		763	{
		764	SV **svp = 0;
		765
		766	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		767	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		768
		769	if (svp)
		770	{
		771	SV *old = *svp;
		772	*svp = 0;
		773	SvREFCNT_dec (old);
		774	return 0;
		775	}
		776	}
		777
		778	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		779	}
		780
		781	static int
		782	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	const char *s = MgPV_nolen_const (mg);
		785
		786	if (*s == '_')
		787	{
		788	SV **svp = 0;
		789
		790	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		791	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		792
		793	if (svp)
		794	{
		795	SV *old = *svp;
		796	*svp = newSVsv (sv);
		797	SvREFCNT_dec (old);
		798	return 0;
		799	}
		800	}
		801
		802	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		803	}
599		804
600	static void	805	static void
601	coro_setup (pTHX_ struct coro *coro)	806	coro_setup (pTHX_ struct coro *coro)
602	{	807	{
603	/*	808	/*
…		…
608	PL_runops = RUNOPS_DEFAULT;	813	PL_runops = RUNOPS_DEFAULT;
609	PL_curcop = &PL_compiling;	814	PL_curcop = &PL_compiling;
610	PL_in_eval = EVAL_NULL;	815	PL_in_eval = EVAL_NULL;
611	PL_comppad = 0;	816	PL_comppad = 0;
612	PL_curpm = 0;	817	PL_curpm = 0;
613	PL_curpad = 1;	818	PL_curpad = 0;
614	PL_localizing = 0;	819	PL_localizing = 0;
615	PL_dirty = 0;	820	PL_dirty = 0;
616	PL_restartop = 0;	821	PL_restartop = 0;
		822	#if PERL_VERSION_ATLEAST (5,10,0)
		823	PL_parser = 0;
		824	#endif
		825
		826	/* recreate the die/warn hooks */
		827	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		828	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
617		829
618	GvSV (PL_defgv) = newSV (0);	830	GvSV (PL_defgv) = newSV (0);
619	GvAV (PL_defgv) = coro->args; coro->args = 0;	831	GvAV (PL_defgv) = coro->args; coro->args = 0;
620	GvSV (PL_errgv) = newSV (0);	832	GvSV (PL_errgv) = newSV (0);
621	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	833	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
622	PL_rs = newSVsv (GvSV (irsgv));	834	PL_rs = newSVsv (GvSV (irsgv));
623	PL_defoutgv = SvREFCNT_inc (stdoutgv);	835	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
624		836
625	{	837	{
626	dSP;	838	dSP;
627	LOGOP myop;	839	LOGOP myop;
628		840
…		…
636	PL_op = (OP *)&myop;	848	PL_op = (OP *)&myop;
637	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	849	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
638	SPAGAIN;	850	SPAGAIN;
639	}	851	}
640		852
641	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	853	/* this newly created coroutine might be run on an existing cctx which most
		854	* likely was suspended in set_stacklevel, called from entersub.
		855	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		856	* so we ENTER here for symmetry
		857	*/
		858	ENTER;
642	}	859	}
643		860
644	static void	861	static void
645	coro_destroy (pTHX_ struct coro *coro)	862	coro_destruct (pTHX_ struct coro *coro)
646	{	863	{
647	if (!IN_DESTRUCT)	864	if (!IN_DESTRUCT)
648	{	865	{
649	/* restore all saved variables and stuff */	866	/* restore all saved variables and stuff */
650	LEAVE_SCOPE (0);	867	LEAVE_SCOPE (0);
…		…
666	SvREFCNT_dec (GvSV (PL_errgv));	883	SvREFCNT_dec (GvSV (PL_errgv));
667	SvREFCNT_dec (PL_defoutgv);	884	SvREFCNT_dec (PL_defoutgv);
668	SvREFCNT_dec (PL_rs);	885	SvREFCNT_dec (PL_rs);
669	SvREFCNT_dec (GvSV (irsgv));	886	SvREFCNT_dec (GvSV (irsgv));
670		887
		888	SvREFCNT_dec (PL_diehook);
		889	SvREFCNT_dec (PL_warnhook);
		890
671	SvREFCNT_dec (coro->saved_deffh);	891	SvREFCNT_dec (coro->saved_deffh);
672	//SvREFCNT_dec (coro->throw);	892	SvREFCNT_dec (coro->throw);
673		893
674	coro_destroy_stacks (aTHX);	894	coro_destruct_stacks (aTHX);
675	}	895	}
676		896
677	static void	897	static void
678	free_coro_mortal (pTHX)	898	free_coro_mortal (pTHX)
679	{	899	{
…		…
716	: cx->blk_gimme == G_SCALAR ? bot + 1	936	: cx->blk_gimme == G_SCALAR ? bot + 1
717	: bot;	937	: bot;
718		938
719	av_extend (av, top - bot);	939	av_extend (av, top - bot);
720	while (bot < top)	940	while (bot < top)
721	av_push (av, SvREFCNT_inc (*bot++));	941	av_push (av, SvREFCNT_inc_NN (*bot++));
722		942
723	PL_runops = RUNOPS_DEFAULT;	943	PL_runops = RUNOPS_DEFAULT;
724	ENTER;	944	ENTER;
725	SAVETMPS;	945	SAVETMPS;
726	EXTEND (SP, 3);	946	EXTEND (SP, 3);
…		…
764	SAVETMPS;	984	SAVETMPS;
765	EXTEND (SP, 3);	985	EXTEND (SP, 3);
766	PUSHMARK (SP);	986	PUSHMARK (SP);
767	PUSHs (&PL_sv_yes);	987	PUSHs (&PL_sv_yes);
768	PUSHs (fullname);	988	PUSHs (fullname);
769	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	989	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
770	PUTBACK;	990	PUTBACK;
771	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	991	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
772	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	992	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
773	SPAGAIN;	993	SPAGAIN;
774	FREETMPS;	994	FREETMPS;
…		…
810		1030
811	/* inject a fake call to Coro::State::_cctx_init into the execution */	1031	/* inject a fake call to Coro::State::_cctx_init into the execution */
812	/* _cctx_init should be careful, as it could be called at almost any time */	1032	/* _cctx_init should be careful, as it could be called at almost any time */
813	/* during execution of a perl program */	1033	/* during execution of a perl program */
814	static void NOINLINE	1034	static void NOINLINE
815	prepare_cctx (pTHX_ coro_cctx *cctx)	1035	cctx_prepare (pTHX_ coro_cctx *cctx)
816	{	1036	{
817	dSP;	1037	dSP;
818	LOGOP myop;	1038	LOGOP myop;
819		1039
820	PL_top_env = &PL_start_env;	1040	PL_top_env = &PL_start_env;
…		…
838		1058
839	/*	1059	/*
840	* this is a _very_ stripped down perl interpreter ;)	1060	* this is a _very_ stripped down perl interpreter ;)
841	*/	1061	*/
842	static void	1062	static void
843	coro_run (void *arg)	1063	cctx_run (void *arg)
844	{	1064	{
		1065	#ifdef USE_ITHREADS
		1066	# if CORO_PTHREAD
		1067	PERL_SET_CONTEXT (coro_thx);
		1068	# endif
		1069	#endif
		1070	{
845	dTHX;	1071	dTHX;
846		1072
847	/* coro_run is the alternative tail of transfer(), so unlock here. */	1073	/* cctx_run is the alternative tail of transfer(), so unlock here. */
848	UNLOCK;	1074	UNLOCK;
849		1075
850	/* we now skip the entersub that lead to transfer() */	1076	/* we now skip the entersub that lead to transfer() */
851	PL_op = PL_op->op_next;	1077	PL_op = PL_op->op_next;
852		1078
853	/* inject a fake subroutine call to cctx_init */	1079	/* inject a fake subroutine call to cctx_init */
854	prepare_cctx (aTHX_ (coro_cctx *)arg);	1080	cctx_prepare (aTHX_ (coro_cctx *)arg);
855		1081
856	/* somebody or something will hit me for both perl_run and PL_restartop */	1082	/* somebody or something will hit me for both perl_run and PL_restartop */
857	PL_restartop = PL_op;	1083	PL_restartop = PL_op;
858	perl_run (PL_curinterp);	1084	perl_run (PL_curinterp);
859		1085
860	/*	1086	/*
861	* If perl-run returns we assume exit() was being called or the coro	1087	* If perl-run returns we assume exit() was being called or the coro
862	* fell off the end, which seems to be the only valid (non-bug)	1088	* fell off the end, which seems to be the only valid (non-bug)
863	* reason for perl_run to return. We try to exit by jumping to the	1089	* reason for perl_run to return. We try to exit by jumping to the
864	* bootstrap-time "top" top_env, as we cannot restore the "main"	1090	* bootstrap-time "top" top_env, as we cannot restore the "main"
865	* coroutine as Coro has no such concept	1091	* coroutine as Coro has no such concept
866	*/	1092	*/
867	PL_top_env = main_top_env;	1093	PL_top_env = main_top_env;
868	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1094	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1095	}
869	}	1096	}
870		1097
871	static coro_cctx *	1098	static coro_cctx *
872	cctx_new ()	1099	cctx_new ()
873	{	1100	{
874	coro_cctx *cctx;	1101	coro_cctx *cctx;
		1102
		1103	++cctx_count;
		1104	New (0, cctx, 1, coro_cctx);
		1105
		1106	cctx->gen = cctx_gen;
		1107	cctx->flags = 0;
		1108
		1109	return cctx;
		1110	}
		1111
		1112	/* create a new cctx only suitable as source */
		1113	static coro_cctx *
		1114	cctx_new_empty ()
		1115	{
		1116	coro_cctx *cctx = cctx_new ();
		1117
		1118	cctx->sptr = 0;
		1119	cctx->idle_sp = 0; /* should never be a valid address */
		1120	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1121
		1122	return cctx;
		1123	}
		1124
		1125	/* create a new cctx suitable as destination/running a perl interpreter */
		1126	static coro_cctx *
		1127	cctx_new_run ()
		1128	{
		1129	coro_cctx *cctx = cctx_new ();
875	void *stack_start;	1130	void *stack_start;
876	size_t stack_size;	1131	size_t stack_size;
877		1132
878	++cctx_count;
879
880	Newz (0, cctx, 1, coro_cctx);
881
882	#if HAVE_MMAP	1133	#if HAVE_MMAP
883
884	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1134	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
885	/* mmap supposedly does allocate-on-write for us */	1135	/* mmap supposedly does allocate-on-write for us */
886	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1136	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
887		1137
888	if (cctx->sptr != (void *)-1)	1138	if (cctx->sptr != (void *)-1)
889	{	1139	{
…		…
895	cctx->flags |= CC_MAPPED;	1145	cctx->flags |= CC_MAPPED;
896	}	1146	}
897	else	1147	else
898	#endif	1148	#endif
899	{	1149	{
900	cctx->ssize = coro_stacksize * (long)sizeof (long);	1150	cctx->ssize = cctx_stacksize * (long)sizeof (long);
901	New (0, cctx->sptr, coro_stacksize, long);	1151	New (0, cctx->sptr, cctx_stacksize, long);
902		1152
903	if (!cctx->sptr)	1153	if (!cctx->sptr)
904	{	1154	{
905	perror ("FATAL: unable to allocate stack for coroutine");	1155	perror ("FATAL: unable to allocate stack for coroutine");
906	_exit (EXIT_FAILURE);	1156	_exit (EXIT_FAILURE);
…		…
909	stack_start = cctx->sptr;	1159	stack_start = cctx->sptr;
910	stack_size = cctx->ssize;	1160	stack_size = cctx->ssize;
911	}	1161	}
912		1162
913	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1163	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
914	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1164	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
915		1165
916	return cctx;	1166	return cctx;
917	}	1167	}
918		1168
919	static void	1169	static void
…		…
921	{	1171	{
922	if (!cctx)	1172	if (!cctx)
923	return;	1173	return;
924		1174
925	--cctx_count;	1175	--cctx_count;
		1176	coro_destroy (&cctx->cctx);
926		1177
		1178	/* coro_transfer creates new, empty cctx's */
		1179	if (cctx->sptr)
		1180	{
927	#if CORO_USE_VALGRIND	1181	#if CORO_USE_VALGRIND
928	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1182	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
929	#endif	1183	#endif
930		1184
931	#if HAVE_MMAP	1185	#if HAVE_MMAP
932	if (cctx->flags & CC_MAPPED)	1186	if (cctx->flags & CC_MAPPED)
933	munmap (cctx->sptr, cctx->ssize);	1187	munmap (cctx->sptr, cctx->ssize);
934	else	1188	else
935	#endif	1189	#endif
936	Safefree (cctx->sptr);	1190	Safefree (cctx->sptr);
		1191	}
937		1192
938	Safefree (cctx);	1193	Safefree (cctx);
939	}	1194	}
940		1195
941	/* wether this cctx should be destructed */	1196	/* wether this cctx should be destructed */
942	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1197	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
943		1198
944	static coro_cctx *	1199	static coro_cctx *
945	cctx_get (pTHX)	1200	cctx_get (pTHX)
946	{	1201	{
947	while (expect_true (cctx_first))	1202	while (expect_true (cctx_first))
…		…
954	return cctx;	1209	return cctx;
955		1210
956	cctx_destroy (cctx);	1211	cctx_destroy (cctx);
957	}	1212	}
958		1213
959	return cctx_new ();	1214	return cctx_new_run ();
960	}	1215	}
961		1216
962	static void	1217	static void
963	cctx_put (coro_cctx *cctx)	1218	cctx_put (coro_cctx *cctx)
964	{	1219	{
		1220	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1221
965	/* free another cctx if overlimit */	1222	/* free another cctx if overlimit */
966	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1223	if (expect_false (cctx_idle >= cctx_max_idle))
967	{	1224	{
968	coro_cctx *first = cctx_first;	1225	coro_cctx *first = cctx_first;
969	cctx_first = first->next;	1226	cctx_first = first->next;
970	--cctx_idle;	1227	--cctx_idle;
971		1228
…		…
991	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1248	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
992		1249
993	if (expect_false (next->flags & CF_DESTROYED))	1250	if (expect_false (next->flags & CF_DESTROYED))
994	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1251	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
995		1252
		1253	#if !PERL_VERSION_ATLEAST (5,10,0)
996	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1254	if (expect_false (PL_lex_state != LEX_NOTPARSING))
997	croak ("Coro::State::transfer called while parsing, but this is not supported");	1255	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1256	#endif
998	}	1257	}
999	}	1258	}
1000		1259
1001	/* always use the TRANSFER macro */	1260	/* always use the TRANSFER macro */
1002	static void NOINLINE	1261	static void NOINLINE
1003	transfer (pTHX_ struct coro *prev, struct coro *next)	1262	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1004	{	1263	{
1005	dSTACKLEVEL;	1264	dSTACKLEVEL;
1006		1265
1007	/* sometimes transfer is only called to set idle_sp */	1266	/* sometimes transfer is only called to set idle_sp */
1008	if (expect_false (!next))	1267	if (expect_false (!next))
…		…
1010	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1269	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1011	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1270	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1012	}	1271	}
1013	else if (expect_true (prev != next))	1272	else if (expect_true (prev != next))
1014	{	1273	{
		1274	static volatile int has_throw;
1015	coro_cctx *prev__cctx;	1275	coro_cctx *prev__cctx;
1016		1276
1017	if (expect_false (prev->flags & CF_NEW))	1277	if (expect_false (prev->flags & CF_NEW))
1018	{	1278	{
1019	/* create a new empty context */	1279	/* create a new empty/source context */
1020	Newz (0, prev->cctx, 1, coro_cctx);	1280	prev->cctx = cctx_new_empty ();
1021	prev->flags &= ~CF_NEW;	1281	prev->flags &= ~CF_NEW;
1022	prev->flags |= CF_RUNNING;	1282	prev->flags |= CF_RUNNING;
1023	}	1283	}
1024		1284
1025	prev->flags &= ~CF_RUNNING;	1285	prev->flags &= ~CF_RUNNING;
1026	next->flags |= CF_RUNNING;	1286	next->flags |= CF_RUNNING;
1027		1287
1028	LOCK;	1288	LOCK;
		1289
		1290	/* first get rid of the old state */
		1291	save_perl (aTHX_ prev);
1029		1292
1030	if (expect_false (next->flags & CF_NEW))	1293	if (expect_false (next->flags & CF_NEW))
1031	{	1294	{
1032	/* need to start coroutine */	1295	/* need to start coroutine */
1033	next->flags &= ~CF_NEW;	1296	next->flags &= ~CF_NEW;
1034	/* first get rid of the old state */
1035	save_perl (aTHX_ prev);
1036	/* setup coroutine call */	1297	/* setup coroutine call */
1037	coro_setup (aTHX_ next);	1298	coro_setup (aTHX_ next);
1038	}	1299	}
1039	else	1300	else
1040	{
1041	/* coroutine already started */
1042	save_perl (aTHX_ prev);
1043	load_perl (aTHX_ next);	1301	load_perl (aTHX_ next);
1044	}
1045		1302
1046	prev__cctx = prev->cctx;	1303	prev__cctx = prev->cctx;
1047		1304
1048	/* possibly "free" the cctx */	1305	/* possibly "free" the cctx */
1049	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1306	if (expect_true (
		1307	prev__cctx->idle_sp == STACKLEVEL
		1308	&& !(prev__cctx->flags & CC_TRACE)
		1309	&& !force_cctx
		1310	))
1050	{	1311	{
1051	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1312	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1052	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1313	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1053		1314
1054	prev->cctx = 0;	1315	prev->cctx = 0;
1055		1316
1056	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1317	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1057	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1318	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1058	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1319	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1320	if (!next->cctx)
1059	next->cctx = cctx_get (aTHX);	1321	next->cctx = cctx_get (aTHX);
1060		1322
1061	cctx_put (prev__cctx);	1323	cctx_put (prev__cctx);
1062	}	1324	}
1063		1325
1064	++next->usecount;	1326	++next->usecount;
1065		1327
1066	if (expect_true (!next->cctx))	1328	if (expect_true (!next->cctx))
1067	next->cctx = cctx_get (aTHX);	1329	next->cctx = cctx_get (aTHX);
		1330
		1331	has_throw = !!next->throw;
1068		1332
1069	if (expect_false (prev__cctx != next->cctx))	1333	if (expect_false (prev__cctx != next->cctx))
1070	{	1334	{
1071	prev__cctx->top_env = PL_top_env;	1335	prev__cctx->top_env = PL_top_env;
1072	PL_top_env = next->cctx->top_env;	1336	PL_top_env = next->cctx->top_env;
1073	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1337	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1074	}	1338	}
1075		1339
1076	free_coro_mortal (aTHX);	1340	free_coro_mortal (aTHX);
1077	UNLOCK;	1341	UNLOCK;
		1342
		1343	if (expect_false (has_throw))
		1344	{
		1345	struct coro *coro = SvSTATE (coro_current);
		1346
		1347	if (coro->throw)
		1348	{
		1349	SV *exception = coro->throw;
		1350	coro->throw = 0;
		1351	sv_setsv (ERRSV, exception);
		1352	croak (0);
		1353	}
		1354	}
1078	}	1355	}
1079	}	1356	}
1080		1357
1081	struct transfer_args	1358	struct transfer_args
1082	{	1359	{
1083	struct coro *prev, *next;	1360	struct coro *prev, *next;
1084	};	1361	};
1085		1362
1086	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1363	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1087	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1364	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1088		1365
1089	/** high level stuff ********************************************************/	1366	/** high level stuff ********************************************************/
1090		1367
1091	static int	1368	static int
…		…
1115	croak ("FATAL: tried to destroy currently running coroutine");	1392	croak ("FATAL: tried to destroy currently running coroutine");
1116		1393
1117	save_perl (aTHX_ &temp);	1394	save_perl (aTHX_ &temp);
1118	load_perl (aTHX_ coro);	1395	load_perl (aTHX_ coro);
1119		1396
1120	coro_destroy (aTHX_ coro);	1397	coro_destruct (aTHX_ coro);
1121		1398
1122	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1399	load_perl (aTHX_ &temp);
1123		1400
1124	coro->mainstack = 0;	1401	coro->slot = 0;
1125	}	1402	}
1126		1403
1127	cctx_destroy (coro->cctx);	1404	cctx_destroy (coro->cctx);
1128	SvREFCNT_dec (coro->args);	1405	SvREFCNT_dec (coro->args);
1129		1406
…		…
1185	{	1462	{
1186	dTHX;	1463	dTHX;
1187	struct transfer_args ta;	1464	struct transfer_args ta;
1188		1465
1189	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1466	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1190	TRANSFER (ta);	1467	TRANSFER (ta, 1);
1191	}	1468	}
1192		1469
1193	/** Coro ********************************************************************/	1470	/** Coro ********************************************************************/
1194		1471
1195	static void	1472	static void
…		…
1197	{	1474	{
1198	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1475	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1199	}	1476	}
1200		1477
1201	static SV *	1478	static SV *
1202	coro_deq (pTHX_ int min_prio)	1479	coro_deq (pTHX)
1203	{	1480	{
1204	int prio = PRIO_MAX - PRIO_MIN;	1481	int prio;
1205		1482
1206	min_prio -= PRIO_MIN;
1207	if (min_prio < 0)
1208	min_prio = 0;
1209
1210	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1483	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1211	if (AvFILLp (coro_ready [prio]) >= 0)	1484	if (AvFILLp (coro_ready [prio]) >= 0)
1212	return av_shift (coro_ready [prio]);	1485	return av_shift (coro_ready [prio]);
1213		1486
1214	return 0;	1487	return 0;
1215	}	1488	}
…		…
1217	static int	1490	static int
1218	api_ready (SV *coro_sv)	1491	api_ready (SV *coro_sv)
1219	{	1492	{
1220	dTHX;	1493	dTHX;
1221	struct coro *coro;	1494	struct coro *coro;
		1495	SV *sv_hook;
		1496	void (*xs_hook)(void);
1222		1497
1223	if (SvROK (coro_sv))	1498	if (SvROK (coro_sv))
1224	coro_sv = SvRV (coro_sv);	1499	coro_sv = SvRV (coro_sv);
1225		1500
1226	coro = SvSTATE (coro_sv);	1501	coro = SvSTATE (coro_sv);
…		…
1229	return 0;	1504	return 0;
1230		1505
1231	coro->flags |= CF_READY;	1506	coro->flags |= CF_READY;
1232		1507
1233	LOCK;	1508	LOCK;
		1509
		1510	sv_hook = coro_nready ? 0 : coro_readyhook;
		1511	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1512
1234	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1513	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1235	++coro_nready;	1514	++coro_nready;
		1515
1236	UNLOCK;	1516	UNLOCK;
		1517
		1518	if (sv_hook)
		1519	{
		1520	dSP;
		1521
		1522	ENTER;
		1523	SAVETMPS;
		1524
		1525	PUSHMARK (SP);
		1526	PUTBACK;
		1527	call_sv (sv_hook, G_DISCARD);
		1528	SPAGAIN;
		1529
		1530	FREETMPS;
		1531	LEAVE;
		1532	}
		1533
		1534	if (xs_hook)
		1535	xs_hook ();
1237		1536
1238	return 1;	1537	return 1;
1239	}	1538	}
1240		1539
1241	static int	1540	static int
…		…
1251	SV *prev_sv, *next_sv;	1550	SV *prev_sv, *next_sv;
1252		1551
1253	for (;;)	1552	for (;;)
1254	{	1553	{
1255	LOCK;	1554	LOCK;
1256	next_sv = coro_deq (aTHX_ PRIO_MIN);	1555	next_sv = coro_deq (aTHX);
1257		1556
1258	/* nothing to schedule: call the idle handler */	1557	/* nothing to schedule: call the idle handler */
1259	if (expect_false (!next_sv))	1558	if (expect_false (!next_sv))
1260	{	1559	{
1261	dSP;	1560	dSP;
…		…
1265	SAVETMPS;	1564	SAVETMPS;
1266		1565
1267	PUSHMARK (SP);	1566	PUSHMARK (SP);
1268	PUTBACK;	1567	PUTBACK;
1269	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1568	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1569	SPAGAIN;
1270		1570
1271	FREETMPS;	1571	FREETMPS;
1272	LEAVE;	1572	LEAVE;
1273	continue;	1573	continue;
1274	}	1574	}
…		…
1329	{	1629	{
1330	dTHX;	1630	dTHX;
1331	struct transfer_args ta;	1631	struct transfer_args ta;
1332		1632
1333	prepare_schedule (aTHX_ &ta);	1633	prepare_schedule (aTHX_ &ta);
1334	TRANSFER (ta);	1634	TRANSFER (ta, 1);
1335	}	1635	}
1336		1636
1337	static int	1637	static int
1338	api_cede (void)	1638	api_cede (void)
1339	{	1639	{
…		…
1342		1642
1343	prepare_cede (aTHX_ &ta);	1643	prepare_cede (aTHX_ &ta);
1344		1644
1345	if (expect_true (ta.prev != ta.next))	1645	if (expect_true (ta.prev != ta.next))
1346	{	1646	{
1347	TRANSFER (ta);	1647	TRANSFER (ta, 1);
1348	return 1;	1648	return 1;
1349	}	1649	}
1350	else	1650	else
1351	return 0;	1651	return 0;
1352	}	1652	}
…		…
1357	dTHX;	1657	dTHX;
1358	struct transfer_args ta;	1658	struct transfer_args ta;
1359		1659
1360	if (prepare_cede_notself (aTHX_ &ta))	1660	if (prepare_cede_notself (aTHX_ &ta))
1361	{	1661	{
1362	TRANSFER (ta);	1662	TRANSFER (ta, 1);
1363	return 1;	1663	return 1;
1364	}	1664	}
1365	else	1665	else
1366	return 0;	1666	return 0;
1367	}	1667	}
…		…
1373	struct coro *coro = SvSTATE (coro_sv);	1673	struct coro *coro = SvSTATE (coro_sv);
1374		1674
1375	if (flags & CC_TRACE)	1675	if (flags & CC_TRACE)
1376	{	1676	{
1377	if (!coro->cctx)	1677	if (!coro->cctx)
1378	coro->cctx = cctx_new ();	1678	coro->cctx = cctx_new_run ();
1379	else if (!(coro->cctx->flags & CC_TRACE))	1679	else if (!(coro->cctx->flags & CC_TRACE))
1380	croak ("cannot enable tracing on coroutine with custom stack");	1680	croak ("cannot enable tracing on coroutine with custom stack");
1381		1681
1382	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1682	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1383	}	1683	}
…		…
1386	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1686	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1387		1687
1388	if (coro->flags & CF_RUNNING)	1688	if (coro->flags & CF_RUNNING)
1389	PL_runops = RUNOPS_DEFAULT;	1689	PL_runops = RUNOPS_DEFAULT;
1390	else	1690	else
1391	coro->runops = RUNOPS_DEFAULT;	1691	coro->slot->runops = RUNOPS_DEFAULT;
		1692	}
		1693	}
		1694
		1695	#if 0
		1696	static int
		1697	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1698	{
		1699	AV *padlist;
		1700	AV *av = (AV *)mg->mg_obj;
		1701
		1702	abort ();
		1703
		1704	return 0;
		1705	}
		1706
		1707	static MGVTBL coro_gensub_vtbl = {
		1708	0, 0, 0, 0,
		1709	coro_gensub_free
		1710	};
		1711	#endif
		1712
		1713	/*****************************************************************************/
		1714	/* PerlIO::cede */
		1715
		1716	typedef struct
		1717	{
		1718	PerlIOBuf base;
		1719	NV next, every;
		1720	} PerlIOCede;
		1721
		1722	static IV
		1723	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1724	{
		1725	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1726
		1727	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1728	self->next = nvtime () + self->every;
		1729
		1730	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1731	}
		1732
		1733	static SV *
		1734	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1735	{
		1736	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1737
		1738	return newSVnv (self->every);
		1739	}
		1740
		1741	static IV
		1742	PerlIOCede_flush (pTHX_ PerlIO *f)
		1743	{
		1744	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1745	double now = nvtime ();
		1746
		1747	if (now >= self->next)
1392	}	1748	{
		1749	api_cede ();
		1750	self->next = now + self->every;
		1751	}
		1752
		1753	return PerlIOBuf_flush (aTHX_ f);
1393	}	1754	}
		1755
		1756	static PerlIO_funcs PerlIO_cede =
		1757	{
		1758	sizeof(PerlIO_funcs),
		1759	"cede",
		1760	sizeof(PerlIOCede),
		1761	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1762	PerlIOCede_pushed,
		1763	PerlIOBuf_popped,
		1764	PerlIOBuf_open,
		1765	PerlIOBase_binmode,
		1766	PerlIOCede_getarg,
		1767	PerlIOBase_fileno,
		1768	PerlIOBuf_dup,
		1769	PerlIOBuf_read,
		1770	PerlIOBuf_unread,
		1771	PerlIOBuf_write,
		1772	PerlIOBuf_seek,
		1773	PerlIOBuf_tell,
		1774	PerlIOBuf_close,
		1775	PerlIOCede_flush,
		1776	PerlIOBuf_fill,
		1777	PerlIOBase_eof,
		1778	PerlIOBase_error,
		1779	PerlIOBase_clearerr,
		1780	PerlIOBase_setlinebuf,
		1781	PerlIOBuf_get_base,
		1782	PerlIOBuf_bufsiz,
		1783	PerlIOBuf_get_ptr,
		1784	PerlIOBuf_get_cnt,
		1785	PerlIOBuf_set_ptrcnt,
		1786	};
		1787
1394		1788
1395	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1789	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1396		1790
1397	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
1398		1792
1399	BOOT:	1793	BOOT:
1400	{	1794	{
1401	#ifdef USE_ITHREADS	1795	#ifdef USE_ITHREADS
1402	MUTEX_INIT (&coro_mutex);	1796	MUTEX_INIT (&coro_lock);
		1797	# if CORO_PTHREAD
		1798	coro_thx = PERL_GET_CONTEXT;
		1799	# endif
1403	#endif	1800	#endif
1404	BOOT_PAGESIZE;	1801	BOOT_PAGESIZE;
1405		1802
1406	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1803	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1407	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1804	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1805
		1806	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1807	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1808	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1809
		1810	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1811	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1812	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1408		1813
1409	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1814	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1410		1815
1411	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1816	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1412	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1817	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1417	main_top_env = PL_top_env;	1822	main_top_env = PL_top_env;
1418		1823
1419	while (main_top_env->je_prev)	1824	while (main_top_env->je_prev)
1420	main_top_env = main_top_env->je_prev;	1825	main_top_env = main_top_env->je_prev;
1421		1826
1422	coroapi.ver = CORO_API_VERSION;	1827	coroapi.ver = CORO_API_VERSION;
		1828	coroapi.rev = CORO_API_REVISION;
1423	coroapi.transfer = api_transfer;	1829	coroapi.transfer = api_transfer;
		1830
		1831	{
		1832	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1833
		1834	if (!svp) croak ("Time::HiRes is required");
		1835	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1836
		1837	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1838	}
1424		1839
1425	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1840	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1426	}	1841	}
1427		1842
1428	SV *	1843	SV *
1429	new (char *klass, ...)	1844	new (char *klass, ...)
1430	CODE:	1845	CODE:
1431	{	1846	{
1432	struct coro *coro;	1847	struct coro *coro;
		1848	MAGIC *mg;
1433	HV *hv;	1849	HV *hv;
1434	int i;	1850	int i;
1435		1851
1436	Newz (0, coro, 1, struct coro);	1852	Newz (0, coro, 1, struct coro);
1437	coro->args = newAV ();	1853	coro->args = newAV ();
…		…
1440	if (coro_first) coro_first->prev = coro;	1856	if (coro_first) coro_first->prev = coro;
1441	coro->next = coro_first;	1857	coro->next = coro_first;
1442	coro_first = coro;	1858	coro_first = coro;
1443		1859
1444	coro->hv = hv = newHV ();	1860	coro->hv = hv = newHV ();
1445	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1861	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1862	mg->mg_flags |= MGf_DUP;
1446	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1863	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1447		1864
1448	av_extend (coro->args, items - 1);	1865	av_extend (coro->args, items - 1);
1449	for (i = 1; i < items; i++)	1866	for (i = 1; i < items; i++)
1450	av_push (coro->args, newSVsv (ST (i)));	1867	av_push (coro->args, newSVsv (ST (i)));
…		…
1464	Coro::cede_notself = 4	1881	Coro::cede_notself = 4
1465	CODE:	1882	CODE:
1466	{	1883	{
1467	struct transfer_args ta;	1884	struct transfer_args ta;
1468		1885
		1886	PUTBACK;
1469	switch (ix)	1887	switch (ix)
1470	{	1888	{
1471	case 0:	1889	case 0:
1472	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1890	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1473	ta.next = 0;	1891	ta.next = 0;
1474	break;	1892	break;
1475		1893
1476	case 1:	1894	case 1:
1477	if (items != 2)	1895	if (items != 2)
1478	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1896	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1479		1897
1480	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1898	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1481	break;	1899	break;
1482		1900
1483	case 2:	1901	case 2:
…		…
1492	if (!prepare_cede_notself (aTHX_ &ta))	1910	if (!prepare_cede_notself (aTHX_ &ta))
1493	XSRETURN_EMPTY;	1911	XSRETURN_EMPTY;
1494		1912
1495	break;	1913	break;
1496	}	1914	}
		1915	SPAGAIN;
1497		1916
1498	BARRIER;	1917	BARRIER;
		1918	PUTBACK;
1499	TRANSFER (ta);	1919	TRANSFER (ta, 0);
1500		1920	SPAGAIN; /* might be the sp of a different coroutine now */
1501	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1921	/* be extra careful not to ever do anything after TRANSFER */
1502	XSRETURN_YES;
1503	}	1922	}
1504		1923
1505	bool	1924	bool
1506	_destroy (SV *coro_sv)	1925	_destroy (SV *coro_sv)
1507	CODE:	1926	CODE:
1508	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1927	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1509	OUTPUT:	1928	OUTPUT:
1510	RETVAL	1929	RETVAL
1511		1930
1512	void	1931	void
1513	_exit (code)	1932	_exit (int code)
1514	int code
1515	PROTOTYPE: $	1933	PROTOTYPE: $
1516	CODE:	1934	CODE:
1517	_exit (code);	1935	_exit (code);
1518		1936
1519	int	1937	int
1520	cctx_stacksize (int new_stacksize = 0)	1938	cctx_stacksize (int new_stacksize = 0)
1521	CODE:	1939	CODE:
1522	RETVAL = coro_stacksize;	1940	RETVAL = cctx_stacksize;
1523	if (new_stacksize)	1941	if (new_stacksize)
		1942	{
1524	coro_stacksize = new_stacksize;	1943	cctx_stacksize = new_stacksize;
		1944	++cctx_gen;
		1945	}
		1946	OUTPUT:
		1947	RETVAL
		1948
		1949	int
		1950	cctx_max_idle (int max_idle = 0)
		1951	CODE:
		1952	RETVAL = cctx_max_idle;
		1953	if (max_idle > 1)
		1954	cctx_max_idle = max_idle;
1525	OUTPUT:	1955	OUTPUT:
1526	RETVAL	1956	RETVAL
1527		1957
1528	int	1958	int
1529	cctx_count ()	1959	cctx_count ()
…		…
1553	call (Coro::State coro, SV *coderef)	1983	call (Coro::State coro, SV *coderef)
1554	ALIAS:	1984	ALIAS:
1555	eval = 1	1985	eval = 1
1556	CODE:	1986	CODE:
1557	{	1987	{
1558	if (coro->mainstack)	1988	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1559	{	1989	{
1560	struct coro temp;	1990	struct coro temp;
1561	Zero (&temp, 1, struct coro);
1562		1991
1563	if (!(coro->flags & CF_RUNNING))	1992	if (!(coro->flags & CF_RUNNING))
1564	{	1993	{
		1994	PUTBACK;
1565	save_perl (aTHX_ &temp);	1995	save_perl (aTHX_ &temp);
1566	load_perl (aTHX_ coro);	1996	load_perl (aTHX_ coro);
1567	}	1997	}
1568		1998
1569	{	1999	{
1570	dSP;	2000	dSP;
1571	ENTER;	2001	ENTER;
1572	SAVETMPS;	2002	SAVETMPS;
		2003	PUTBACK;
		2004	PUSHSTACK;
1573	PUSHMARK (SP);	2005	PUSHMARK (SP);
1574	PUTBACK;	2006
1575	if (ix)	2007	if (ix)
1576	eval_sv (coderef, 0);	2008	eval_sv (coderef, 0);
1577	else	2009	else
1578	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2010	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		2011
		2012	POPSTACK;
1579	SPAGAIN;	2013	SPAGAIN;
1580	FREETMPS;	2014	FREETMPS;
1581	LEAVE;	2015	LEAVE;
1582	PUTBACK;	2016	PUTBACK;
1583	}	2017	}
1584		2018
1585	if (!(coro->flags & CF_RUNNING))	2019	if (!(coro->flags & CF_RUNNING))
1586	{	2020	{
1587	save_perl (aTHX_ coro);	2021	save_perl (aTHX_ coro);
1588	load_perl (aTHX_ &temp);	2022	load_perl (aTHX_ &temp);
		2023	SPAGAIN;
1589	}	2024	}
1590	}	2025	}
1591	}	2026	}
1592		2027
1593	SV *	2028	SV *
…		…
1605		2040
1606	void	2041	void
1607	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2042	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1608		2043
1609	SV *	2044	SV *
1610	has_stack (Coro::State coro)	2045	has_cctx (Coro::State coro)
1611	PROTOTYPE: $	2046	PROTOTYPE: $
1612	CODE:	2047	CODE:
1613	RETVAL = boolSV (!!coro->cctx);	2048	RETVAL = boolSV (!!coro->cctx);
1614	OUTPUT:	2049	OUTPUT:
1615	RETVAL	2050	RETVAL
…		…
1620	CODE:	2055	CODE:
1621	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2056	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1622	OUTPUT:	2057	OUTPUT:
1623	RETVAL	2058	RETVAL
1624		2059
1625	IV	2060	UV
1626	rss (Coro::State coro)	2061	rss (Coro::State coro)
1627	PROTOTYPE: $	2062	PROTOTYPE: $
1628	ALIAS:	2063	ALIAS:
1629	usecount = 1	2064	usecount = 1
1630	CODE:	2065	CODE:
…		…
1634	case 1: RETVAL = coro->usecount; break;	2069	case 1: RETVAL = coro->usecount; break;
1635	}	2070	}
1636	OUTPUT:	2071	OUTPUT:
1637	RETVAL	2072	RETVAL
1638		2073
		2074	void
		2075	force_cctx ()
		2076	CODE:
		2077	struct coro *coro = SvSTATE (coro_current);
		2078	coro->cctx->idle_sp = 0;
		2079
		2080	void
		2081	swap_defsv (Coro::State self)
		2082	PROTOTYPE: $
		2083	ALIAS:
		2084	swap_defav = 1
		2085	CODE:
		2086	if (!self->slot)
		2087	croak ("cannot swap state with coroutine that has no saved state");
		2088	else
		2089	{
		2090	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2091	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2092
		2093	SV *tmp = *src; *src = *dst; *dst = tmp;
		2094	}
1639		2095
1640	MODULE = Coro::State PACKAGE = Coro	2096	MODULE = Coro::State PACKAGE = Coro
1641		2097
1642	BOOT:	2098	BOOT:
1643	{	2099	{
1644	int i;	2100	int i;
1645		2101
1646	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1647	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1648	av_async_pool = get_av ("Coro::async_pool", TRUE);	2102	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2103	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2104	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1649		2105
1650	coro_current = get_sv ("Coro::current", FALSE);	2106	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1651	SvREADONLY_on (coro_current);	2107	SvREADONLY_on (coro_current);
1652		2108
1653	coro_stash = gv_stashpv ("Coro", TRUE);	2109	coro_stash = gv_stashpv ("Coro", TRUE);
1654		2110
1655	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1656	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1657	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1658	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1661		2117
1662	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2118	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1663	coro_ready[i] = newAV ();	2119	coro_ready[i] = newAV ();
1664		2120
1665	{	2121	{
1666	SV *sv = perl_get_sv("Coro::API", 1);	2122	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2123	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1667		2124
1668	coroapi.schedule = api_schedule;	2125	coroapi.schedule = api_schedule;
1669	coroapi.cede = api_cede;	2126	coroapi.cede = api_cede;
1670	coroapi.cede_notself = api_cede_notself;	2127	coroapi.cede_notself = api_cede_notself;
1671	coroapi.ready = api_ready;	2128	coroapi.ready = api_ready;
…		…
1682	void	2139	void
1683	_set_current (SV *current)	2140	_set_current (SV *current)
1684	PROTOTYPE: $	2141	PROTOTYPE: $
1685	CODE:	2142	CODE:
1686	SvREFCNT_dec (SvRV (coro_current));	2143	SvREFCNT_dec (SvRV (coro_current));
1687	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2144	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2145
		2146	void
		2147	_set_readyhook (SV *hook)
		2148	PROTOTYPE: $
		2149	CODE:
		2150	LOCK;
		2151	SvREFCNT_dec (coro_readyhook);
		2152	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2153	UNLOCK;
1688		2154
1689	int	2155	int
1690	prio (Coro::State coro, int newprio = 0)	2156	prio (Coro::State coro, int newprio = 0)
1691	ALIAS:	2157	ALIAS:
1692	nice = 1	2158	nice = 1
…		…
1722	CODE:	2188	CODE:
1723	RETVAL = coro_nready;	2189	RETVAL = coro_nready;
1724	OUTPUT:	2190	OUTPUT:
1725	RETVAL	2191	RETVAL
1726		2192
		2193	void
		2194	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2195	PROTOTYPE: $;$
		2196	CODE:
		2197	SvREFCNT_dec (self->throw);
		2198	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2199
1727	# for async_pool speedup	2200	# for async_pool speedup
1728	void	2201	void
1729	_pool_1 (SV *cb)	2202	_pool_1 (SV *cb)
1730	CODE:	2203	CODE:
1731	{	2204	{
…		…
1735	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2208	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1736	AV *invoke_av;	2209	AV *invoke_av;
1737	int i, len;	2210	int i, len;
1738		2211
1739	if (!invoke)	2212	if (!invoke)
		2213	{
		2214	SV *old = PL_diehook;
		2215	PL_diehook = 0;
		2216	SvREFCNT_dec (old);
1740	croak ("\3terminate\2\n");	2217	croak ("\3async_pool terminate\2\n");
		2218	}
1741		2219
1742	SvREFCNT_dec (coro->saved_deffh);	2220	SvREFCNT_dec (coro->saved_deffh);
1743	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2221	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1744		2222
1745	hv_store (hv, "desc", sizeof ("desc") - 1,	2223	hv_store (hv, "desc", sizeof ("desc") - 1,
1746	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2224	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1747		2225
1748	invoke_av = (AV *)SvRV (invoke);	2226	invoke_av = (AV *)SvRV (invoke);
…		…
1752		2230
1753	if (len > 0)	2231	if (len > 0)
1754	{	2232	{
1755	av_fill (defav, len - 1);	2233	av_fill (defav, len - 1);
1756	for (i = 0; i < len; ++i)	2234	for (i = 0; i < len; ++i)
1757	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2235	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1758	}	2236	}
1759		2237
1760	SvREFCNT_dec (invoke);	2238	SvREFCNT_dec (invoke);
1761	}	2239	}
1762		2240
…		…
1769	sv_setsv (cb, &PL_sv_undef);	2247	sv_setsv (cb, &PL_sv_undef);
1770		2248
1771	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2249	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1772	coro->saved_deffh = 0;	2250	coro->saved_deffh = 0;
1773		2251
1774	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2252	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1775	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2253	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2254	{
		2255	SV *old = PL_diehook;
		2256	PL_diehook = 0;
		2257	SvREFCNT_dec (old);
1776	croak ("\3terminate\2\n");	2258	croak ("\3async_pool terminate\2\n");
		2259	}
1777		2260
1778	av_clear (GvAV (PL_defgv));	2261	av_clear (GvAV (PL_defgv));
1779	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2262	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1780	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2263	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1781		2264
…		…
1785	api_trace (coro_current, 0);	2268	api_trace (coro_current, 0);
1786		2269
1787	av_push (av_async_pool, newSVsv (coro_current));	2270	av_push (av_async_pool, newSVsv (coro_current));
1788	}	2271	}
1789		2272
		2273	#if 0
		2274
		2275	void
		2276	_generator_call (...)
		2277	PROTOTYPE: @
		2278	PPCODE:
		2279	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2280	xxxx
		2281	abort ();
		2282
		2283	SV *
		2284	gensub (SV *sub, ...)
		2285	PROTOTYPE: &;@
		2286	CODE:
		2287	{
		2288	struct coro *coro;
		2289	MAGIC *mg;
		2290	CV *xcv;
		2291	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2292	int i;
		2293
		2294	CvGV (ncv) = CvGV (cv);
		2295	CvFILE (ncv) = CvFILE (cv);
		2296
		2297	Newz (0, coro, 1, struct coro);
		2298	coro->args = newAV ();
		2299	coro->flags = CF_NEW;
		2300
		2301	av_extend (coro->args, items - 1);
		2302	for (i = 1; i < items; i++)
		2303	av_push (coro->args, newSVsv (ST (i)));
		2304
		2305	CvISXSUB_on (ncv);
		2306	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2307
		2308	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2309
		2310	CvXSUB (ncv) = CvXSUB (xcv);
		2311	CvANON_on (ncv);
		2312
		2313	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2314	RETVAL = newRV_noinc ((SV *)ncv);
		2315	}
		2316	OUTPUT:
		2317	RETVAL
		2318
		2319	#endif
		2320
1790		2321
1791	MODULE = Coro::State PACKAGE = Coro::AIO	2322	MODULE = Coro::State PACKAGE = Coro::AIO
1792		2323
1793	SV *	2324	void
1794	_get_state ()	2325	_get_state (SV *self)
1795	CODE:	2326	PPCODE:
1796	{	2327	{
1797	struct io_state *data;	2328	AV *defav = GvAV (PL_defgv);
1798		2329	AV *av = newAV ();
		2330	int i;
1799	RETVAL = newSV (sizeof (struct io_state));	2331	SV *data_sv = newSV (sizeof (struct io_state));
1800	data = (struct io_state *)SvPVX (RETVAL);	2332	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1801	SvCUR_set (RETVAL, sizeof (struct io_state));	2333	SvCUR_set (data_sv, sizeof (struct io_state));
1802	SvPOK_only (RETVAL);	2334	SvPOK_only (data_sv);
1803		2335
1804	data->errorno = errno;	2336	data->errorno = errno;
1805	data->laststype = PL_laststype;	2337	data->laststype = PL_laststype;
1806	data->laststatval = PL_laststatval;	2338	data->laststatval = PL_laststatval;
1807	data->statcache = PL_statcache;	2339	data->statcache = PL_statcache;
		2340
		2341	av_extend (av, AvFILLp (defav) + 1 + 1);
		2342
		2343	for (i = 0; i <= AvFILLp (defav); ++i)
		2344	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2345
		2346	av_push (av, data_sv);
		2347
		2348	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2349
		2350	api_ready (self);
1808	}	2351	}
1809	OUTPUT:
1810	RETVAL
1811		2352
1812	void	2353	void
1813	_set_state (char *data_)	2354	_set_state (SV *state)
1814	PROTOTYPE: $	2355	PROTOTYPE: $
1815	CODE:	2356	PPCODE:
1816	{	2357	{
1817	struct io_state *data = (void *)data_;	2358	AV *av = (AV *)SvRV (state);
		2359	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2360	int i;
1818		2361
1819	errno = data->errorno;	2362	errno = data->errorno;
1820	PL_laststype = data->laststype;	2363	PL_laststype = data->laststype;
1821	PL_laststatval = data->laststatval;	2364	PL_laststatval = data->laststatval;
1822	PL_statcache = data->statcache;	2365	PL_statcache = data->statcache;
1823	}
1824		2366
		2367	EXTEND (SP, AvFILLp (av));
		2368	for (i = 0; i < AvFILLp (av); ++i)
		2369	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2370	}
		2371
		2372
		2373	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2374
		2375	BOOT:
		2376	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2377
		2378	SV *
		2379	_schedule (...)
		2380	PROTOTYPE: @
		2381	CODE:
		2382	{
		2383	static int incede;
		2384
		2385	api_cede_notself ();
		2386
		2387	++incede;
		2388	while (coro_nready >= incede && api_cede ())
		2389	;
		2390
		2391	sv_setsv (sv_activity, &PL_sv_undef);
		2392	if (coro_nready >= incede)
		2393	{
		2394	PUSHMARK (SP);
		2395	PUTBACK;
		2396	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2397	SPAGAIN;
		2398	}
		2399
		2400	--incede;
		2401	}
		2402
		2403
		2404	MODULE = Coro::State PACKAGE = PerlIO::cede
		2405
		2406	BOOT:
		2407	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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