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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.175 by root, Sun Sep 30 13:43:45 2007 UTC vs.
Revision 1.253 by root, Fri Nov 7 20:12:26 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
…		…
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	107	#endif
79		108
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		128
100	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	133	#else
104	# define attribute(x)	134	# define attribute(x)
105	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
106	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
107		141
108	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
109		143
110	#include "CoroAPI.h"	144	#include "CoroAPI.h"
111		145
112	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
113	static perl_mutex coro_mutex;	147	static perl_mutex coro_lock;
114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	148	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	149	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
116	#else	150	#else
117	# define LOCK (void)0	151	# define LOCK (void)0
118	# define UNLOCK (void)0	152	# define UNLOCK (void)0
119	#endif	153	#endif
120		154
121	/* helper storage struct for Coro::AIO */	155	/* helper storage struct for Coro::AIO */
122	struct io_state	156	struct io_state
123	{	157	{
		158	AV *res;
124	int errorno;	159	int errorno;
125	I32 laststype;	160	I32 laststype;
126	int laststatval;	161	int laststatval;
127	Stat_t statcache;	162	Stat_t statcache;
128	};	163	};
129		164
		165	static double (*nvtime)(); /* so why doesn't it take void? */
		166
130	static size_t coro_stacksize = CORO_STACKSIZE;	167	static size_t coro_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	168	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	169	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	170	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	171	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	172	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		173
		174	static GV *irsgv; /* $/ */
		175	static GV *stdoutgv; /* *STDOUT */
		176	static SV *rv_diehook;
		177	static SV *rv_warnhook;
		178	static HV *hv_sig; /* %SIG */
136		179
137	/* async_pool helper stuff */	180	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	181	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	182	static SV *sv_pool_size;
140	static AV *av_async_pool;	183	static AV *av_async_pool;
		184
		185	/* Coro::AnyEvent */
		186	static SV *sv_activity;
141		187
142	static struct coro_cctx *cctx_first;	188	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	189	static int cctx_count, cctx_idle;
144		190
145	enum {	191	enum {
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	222	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	223	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	224	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	225	};
180		226
		227	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		228	typedef struct {
		229	SV *defsv;
		230	AV *defav;
		231	SV *errsv;
		232	SV *irsgv;
		233	#define VAR(name,type) type name;
		234	# include "state.h"
		235	#undef VAR
		236	} perl_slots;
		237
		238	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		239
181	/* this is a structure representing a perl-level coroutine */	240	/* this is a structure representing a perl-level coroutine */
182	struct coro {	241	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	242	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	243	coro_cctx *cctx;
185		244
		245	/* process data */
		246	AV *mainstack;
		247	perl_slots *slot; /* basically the saved sp */
		248
186	/* data associated with this coroutine (initial args) */	249	AV *args; /* data associated with this coroutine (initial args) */
187	AV *args;	250	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	251	int flags; /* CF_ flags */
191		252	HV *hv; /* the perl hash associated with this coro, if any */
192	/* optionally saved, might be zero */
193	AV *defav; /* @_ */
194	SV *defsv; /* $_ */
195	SV *errsv; /* $@ */
196	GV *deffh; /* default filehandle */
197	SV *irssv; /* $/ */
198	SV *irssv_sv; /* real $/ cache */
199
200	#define VAR(name,type) type name;
201	# include "state.h"
202	#undef VAR
203		253
204	/* statistics */	254	/* statistics */
205	int usecount; /* number of switches to this coro */	255	int usecount; /* number of transfers to this coro */
206		256
207	/* coro process data */	257	/* coro process data */
208	int prio;	258	int prio;
		259	SV *throw; /* exception to be thrown */
		260
		261	/* async_pool */
		262	SV *saved_deffh;
209		263
210	/* linked list */	264	/* linked list */
211	struct coro *next, *prev;	265	struct coro *next, *prev;
212	HV *hv; /* the perl hash associated with this coro, if any */
213	};	266	};
214		267
215	typedef struct coro *Coro__State;	268	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	269	typedef struct coro *Coro__State_or_hashref;
217		270
…		…
224	#define PRIO_IDLE -3	277	#define PRIO_IDLE -3
225	#define PRIO_MIN -4	278	#define PRIO_MIN -4
226		279
227	/* for Coro.pm */	280	/* for Coro.pm */
228	static SV *coro_current;	281	static SV *coro_current;
		282	static SV *coro_readyhook;
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	283	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	284	static int coro_nready;
231	static struct coro *coro_first;	285	static struct coro *coro_first;
232		286
233	/** lowlevel stuff **********************************************************/	287	/** lowlevel stuff **********************************************************/
234		288
		289	static SV *
		290	coro_get_sv (pTHX_ const char *name, int create)
		291	{
		292	#if PERL_VERSION_ATLEAST (5,10,0)
		293	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		294	get_sv (name, create);
		295	#endif
		296	return get_sv (name, create);
		297	}
		298
		299	static AV *
		300	coro_get_av (pTHX_ const char *name, int create)
		301	{
		302	#if PERL_VERSION_ATLEAST (5,10,0)
		303	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		304	get_av (name, create);
		305	#endif
		306	return get_av (name, create);
		307	}
		308
		309	static HV *
		310	coro_get_hv (pTHX_ const char *name, int create)
		311	{
		312	#if PERL_VERSION_ATLEAST (5,10,0)
		313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		314	get_hv (name, create);
		315	#endif
		316	return get_hv (name, create);
		317	}
		318
235	static AV *	319	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	320	coro_clone_padlist (pTHX_ CV *cv)
237	{	321	{
238	AV *padlist = CvPADLIST (cv);	322	AV *padlist = CvPADLIST (cv);
239	AV *newpadlist, *newpad;	323	AV *newpadlist, *newpad;
240		324
241	newpadlist = newAV ();	325	newpadlist = newAV ();
242	AvREAL_off (newpadlist);	326	AvREAL_off (newpadlist);
243	#if PERL_VERSION_ATLEAST (5,9,0)	327	#if PERL_VERSION_ATLEAST (5,10,0)
244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	328	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245	#else	329	#else
246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	330	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247	#endif	331	#endif
248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	332	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
249	--AvFILLp (padlist);	333	--AvFILLp (padlist);
250		334
251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	335	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
252	av_store (newpadlist, 1, (SV *)newpad);	336	av_store (newpadlist, 1, (SV *)newpad);
253		337
254	return newpadlist;	338	return newpadlist;
255	}	339	}
256		340
…		…
286		370
287	/* casting is fun. */	371	/* casting is fun. */
288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	372	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289	free_padlist (aTHX_ padlist);	373	free_padlist (aTHX_ padlist);
290		374
291	SvREFCNT_dec (av);	375	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292		376
293	return 0;	377	return 0;
294	}	378	}
295		379
296	#define PERL_MAGIC_coro PERL_MAGIC_ext	380	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		381	#define CORO_MAGIC_type_state PERL_MAGIC_ext
297		382
298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	383	static MGVTBL coro_cv_vtbl = {
		384	0, 0, 0, 0,
		385	coro_cv_free
		386	};
299		387
300	#define CORO_MAGIC(cv) \	388	#define CORO_MAGIC(sv, type) \
301	SvMAGIC (cv) \	389	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	390	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	391	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	392	: mg_find (sv, type) \
305	: 0	393	: 0
		394
		395	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		396	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
306		397
307	static struct coro *	398	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	399	SvSTATE_ (pTHX_ SV *coro)
309	{	400	{
310	HV *stash;	401	HV *stash;
311	MAGIC *mg;	402	MAGIC *mg;
312		403
313	if (SvROK (coro))	404	if (SvROK (coro))
314	coro = SvRV (coro);	405	coro = SvRV (coro);
315		406
316	if (SvTYPE (coro) != SVt_PVHV)	407	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	408	croak ("Coro::State object required");
318		409
319	stash = SvSTASH (coro);	410	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	411	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	412	{
322	/* very slow, but rare, check */	413	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	414	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	415	croak ("Coro::State object required");
325	}	416	}
326		417
327	mg = CORO_MAGIC (coro);	418	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	419	return (struct coro *)mg->mg_ptr;
329	}	420	}
330		421
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	422	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		423
333	/* the next two functions merely cache the padlists */	424	/* the next two functions merely cache the padlists */
334	static void	425	static void
335	get_padlist (pTHX_ CV *cv)	426	get_padlist (pTHX_ CV *cv)
336	{	427	{
337	MAGIC *mg = CORO_MAGIC (cv);	428	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	429	AV *av;
339		430
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	431	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	432	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	433	else
343	{	434	{
344	#if CORO_PREFER_PERL_FUNCTIONS	435	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	436	/* this is probably cleaner? but also slower! */
		437	/* in practise, it seems to be less stable */
346	CV *cp = Perl_cv_clone (cv);	438	CV *cp = Perl_cv_clone (cv);
347	CvPADLIST (cv) = CvPADLIST (cp);	439	CvPADLIST (cv) = CvPADLIST (cp);
348	CvPADLIST (cp) = 0;	440	CvPADLIST (cp) = 0;
349	SvREFCNT_dec (cp);	441	SvREFCNT_dec (cp);
350	#else	442	#else
…		…
354	}	446	}
355		447
356	static void	448	static void
357	put_padlist (pTHX_ CV *cv)	449	put_padlist (pTHX_ CV *cv)
358	{	450	{
359	MAGIC *mg = CORO_MAGIC (cv);	451	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	452	AV *av;
361		453
362	if (!mg)	454	if (expect_false (!mg))
363	{	455	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
364	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
365	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
366	mg->mg_virtual = &vtbl_coro;
367	mg->mg_obj = (SV *)newAV ();
368	}
369		456
370	av = (AV *)mg->mg_obj;	457	av = (AV *)mg->mg_obj;
371		458
372	if (AvFILLp (av) >= AvMAX (av))	459	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	460	av_extend (av, AvMAX (av) + 1);
374		461
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	462	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	463	}
377		464
378	/** load & save, init *******************************************************/	465	/** load & save, init *******************************************************/
379
380	#define SB do {
381	#define SE } while (0)
382
383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
384		466
385	static void	467	static void
386	load_perl (pTHX_ Coro__State c)	468	load_perl (pTHX_ Coro__State c)
387	{	469	{
		470	perl_slots *slot = c->slot;
		471	c->slot = 0;
		472
		473	PL_mainstack = c->mainstack;
		474
		475	GvSV (PL_defgv) = slot->defsv;
		476	GvAV (PL_defgv) = slot->defav;
		477	GvSV (PL_errgv) = slot->errsv;
		478	GvSV (irsgv) = slot->irsgv;
		479
388	#define VAR(name,type) PL_ ## name = c->name;	480	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	481	# include "state.h"
390	#undef VAR	482	#undef VAR
391
392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
396
397	if (c->irssv)
398	{
399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
400	{
401	SvREFCNT_dec (c->irssv);
402	c->irssv = 0;
403	}
404	else
405	{
406	REPLACE_SV (PL_rs, c->irssv);
407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
408	sv_setsv (c->irssv_sv, PL_rs);
409	}
410	}
411		483
412	{	484	{
413	dSP;	485	dSP;
		486
414	CV *cv;	487	CV *cv;
415		488
416	/* now do the ugly restore mess */	489	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	490	while (expect_true (cv = (CV *)POPs))
418	{	491	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	492	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	493	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	494	CvPADLIST (cv) = (AV *)POPs;
422	}	495	}
…		…
441		514
442	XPUSHs (Nullsv);	515	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	516	/* this loop was inspired by pp_caller */
444	for (;;)	517	for (;;)
445	{	518	{
446	while (cxix >= 0)	519	while (expect_true (cxix >= 0))
447	{	520	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	521	PERL_CONTEXT *cx = &ccstk[cxix--];
449		522
450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	523	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451	{	524	{
452	CV *cv = cx->blk_sub.cv;	525	CV *cv = cx->blk_sub.cv;
453		526
454	if (CvDEPTH (cv))	527	if (expect_true (CvDEPTH (cv)))
455	{	528	{
456	EXTEND (SP, 3);	529	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	530	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	531	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	532	PUSHs ((SV *)cv);
460		533
461	CvDEPTH (cv) = 0;	534	CvDEPTH (cv) = 0;
462	get_padlist (aTHX_ cv);	535	get_padlist (aTHX_ cv);
463	}	536	}
464	}	537	}
465	}	538	}
466		539
467	if (top_si->si_type == PERLSI_MAIN)	540	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	541	break;
469		542
470	top_si = top_si->si_prev;	543	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	544	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	545	cxix = top_si->si_cxix;
473	}	546	}
474		547
475	PUTBACK;	548	PUTBACK;
476	}	549	}
477		550
478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	551	/* allocate some space on the context stack for our purposes */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	552	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	553	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	554	if (SLOT_COUNT >= 2) CXINC;
482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	555	if (SLOT_COUNT >= 3) CXINC;
		556	{
		557	int i;
		558	for (i = 3; i < SLOT_COUNT; ++i)
		559	CXINC;
		560	}
		561	cxstack_ix -= SLOT_COUNT; /* undo allocation */
483		562
		563	c->mainstack = PL_mainstack;
		564
		565	{
		566	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		567
		568	slot->defav = GvAV (PL_defgv);
		569	slot->defsv = DEFSV;
		570	slot->errsv = ERRSV;
		571	slot->irsgv = GvSV (irsgv);
		572
484	#define VAR(name,type)c->name = PL_ ## name;	573	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	574	# include "state.h"
486	#undef VAR	575	#undef VAR
		576	}
487	}	577	}
488		578
489	/*	579	/*
490	* allocate various perl stacks. This is an exact copy	580	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	581	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	586	# define coro_init_stacks init_stacks
497	#else	587	#else
498	static void	588	static void
499	coro_init_stacks (pTHX)	589	coro_init_stacks (pTHX)
500	{	590	{
501	PL_curstackinfo = new_stackinfo(64, 6);	591	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	592	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	593	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	594	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		595
506	PL_stack_base = AvARRAY(PL_curstack);	596	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	597	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	598	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		599
510	New(50,PL_tmps_stack,64,SV*);	600	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	601	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	602	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	603	PL_tmps_max = 32;
514		604
515	New(54,PL_markstack,16,I32);	605	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	606	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	607	PL_markstack_max = PL_markstack + 16;
518		608
519	#ifdef SET_MARK_OFFSET	609	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	610	SET_MARK_OFFSET;
521	#endif	611	#endif
522		612
523	New(54,PL_scopestack,16,I32);	613	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	614	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	615	PL_scopestack_max = 8;
526		616
527	New(54,PL_savestack,64,ANY);	617	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	618	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	619	PL_savestack_max = 24;
530		620
531	#if !PERL_VERSION_ATLEAST (5,9,0)	621	#if !PERL_VERSION_ATLEAST (5,10,0)
532	New(54,PL_retstack,4,OP*);	622	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	623	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	624	PL_retstack_max = 4;
535	#endif	625	#endif
536	}	626	}
…		…
538		628
539	/*	629	/*
540	* destroy the stacks, the callchain etc...	630	* destroy the stacks, the callchain etc...
541	*/	631	*/
542	static void	632	static void
543	coro_destroy_stacks (pTHX)	633	coro_destruct_stacks (pTHX)
544	{	634	{
545	if (!IN_DESTRUCT)
546	{
547	/* restore all saved variables and stuff */
548	LEAVE_SCOPE (0);
549	assert (PL_tmps_floor == -1);
550
551	/* free all temporaries */
552	FREETMPS;
553	assert (PL_tmps_ix == -1);
554
555	/* unwind all extra stacks */
556	POPSTACK_TO (PL_mainstack);
557
558	/* unwind main stack */
559	dounwind (-1);
560	}
561
562	while (PL_curstackinfo->si_next)	635	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	636	PL_curstackinfo = PL_curstackinfo->si_next;
564		637
565	while (PL_curstackinfo)	638	while (PL_curstackinfo)
566	{	639	{
…		…
576		649
577	Safefree (PL_tmps_stack);	650	Safefree (PL_tmps_stack);
578	Safefree (PL_markstack);	651	Safefree (PL_markstack);
579	Safefree (PL_scopestack);	652	Safefree (PL_scopestack);
580	Safefree (PL_savestack);	653	Safefree (PL_savestack);
581	#if !PERL_VERSION_ATLEAST (5,9,0)	654	#if !PERL_VERSION_ATLEAST (5,10,0)
582	Safefree (PL_retstack);	655	Safefree (PL_retstack);
583	#endif	656	#endif
584	}	657	}
585		658
586	static size_t	659	static size_t
587	coro_rss (pTHX_ struct coro *coro)	660	coro_rss (pTHX_ struct coro *coro)
588	{	661	{
589	size_t rss = sizeof (coro);	662	size_t rss = sizeof (*coro);
590		663
591	if (coro->mainstack)	664	if (coro->mainstack)
592	{	665	{
		666	perl_slots tmp_slot;
		667	perl_slots *slot;
		668
593	if (coro->flags & CF_RUNNING)	669	if (coro->flags & CF_RUNNING)
594	{	670	{
		671	slot = &tmp_slot;
		672
595	#define VAR(name,type)coro->name = PL_ ## name;	673	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	674	# include "state.h"
597	#undef VAR	675	#undef VAR
598	}	676	}
		677	else
		678	slot = coro->slot;
599		679
		680	if (slot)
		681	{
600	rss += sizeof (coro->curstackinfo);	682	rss += sizeof (slot->curstackinfo);
601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	683	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	684	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	685	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	686	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	687	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	688	rss += slot->savestack_max * sizeof (ANY);
608		689
609	#if !PERL_VERSION_ATLEAST (5,9,0)	690	#if !PERL_VERSION_ATLEAST (5,10,0)
610	rss += coro->retstack_max * sizeof (OP *);	691	rss += slot->retstack_max * sizeof (OP *);
611	#endif	692	#endif
		693	}
612	}	694	}
613		695
614	return rss;	696	return rss;
615	}	697	}
616		698
617	/** coroutine stack handling ************************************************/	699	/** coroutine stack handling ************************************************/
618		700
		701	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		702	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		703	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		704
		705	/* apparently < 5.8.8 */
		706	#ifndef MgPV_nolen_const
		707	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		708	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		709	(const char*)(mg)->mg_ptr)
		710	#endif
		711
		712	/*
		713	* This overrides the default magic get method of %SIG elements.
		714	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		715	* and instead of tryign to save and restore the hash elements, we just provide
		716	* readback here.
		717	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		718	* not expecting this to actually change the hook. This is a potential problem
		719	* when a schedule happens then, but we ignore this.
		720	*/
		721	static int
		722	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		723	{
		724	const char *s = MgPV_nolen_const (mg);
		725
		726	if (*s == '_')
		727	{
		728	SV **svp = 0;
		729
		730	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		731	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		732
		733	if (svp)
		734	{
		735	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		736	return 0;
		737	}
		738	}
		739
		740	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		741	}
		742
		743	static int
		744	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		745	{
		746	const char *s = MgPV_nolen_const (mg);
		747
		748	if (*s == '_')
		749	{
		750	SV **svp = 0;
		751
		752	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		753	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		754
		755	if (svp)
		756	{
		757	SV *old = *svp;
		758	*svp = 0;
		759	SvREFCNT_dec (old);
		760	return 0;
		761	}
		762	}
		763
		764	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		765	}
		766
		767	static int
		768	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	const char *s = MgPV_nolen_const (mg);
		771
		772	if (*s == '_')
		773	{
		774	SV **svp = 0;
		775
		776	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		777	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		778
		779	if (svp)
		780	{
		781	SV *old = *svp;
		782	*svp = newSVsv (sv);
		783	SvREFCNT_dec (old);
		784	return 0;
		785	}
		786	}
		787
		788	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		789	}
		790
619	static void	791	static void
620	setup_coro (pTHX_ struct coro *coro)	792	coro_setup (pTHX_ struct coro *coro)
621	{	793	{
622	/*	794	/*
623	* emulate part of the perl startup here.	795	* emulate part of the perl startup here.
624	*/	796	*/
625	coro_init_stacks (aTHX);	797	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	799	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	800	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	801	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	802	PL_comppad = 0;
631	PL_curpm = 0;	803	PL_curpm = 0;
		804	PL_curpad = 0;
632	PL_localizing = 0;	805	PL_localizing = 0;
633	PL_dirty = 0;	806	PL_dirty = 0;
634	PL_restartop = 0;	807	PL_restartop = 0;
		808	#if PERL_VERSION_ATLEAST (5,10,0)
		809	PL_parser = 0;
		810	#endif
		811
		812	/* recreate the die/warn hooks */
		813	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		814	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		815
		816	GvSV (PL_defgv) = newSV (0);
		817	GvAV (PL_defgv) = coro->args; coro->args = 0;
		818	GvSV (PL_errgv) = newSV (0);
		819	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		820	PL_rs = newSVsv (GvSV (irsgv));
		821	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
635		822
636	{	823	{
637	dSP;	824	dSP;
638	LOGOP myop;	825	LOGOP myop;
639		826
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	827	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	828	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	829	myop.op_flags = OPf_WANT_VOID;
646		830
647	PUSHMARK (SP);	831	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	832	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	833	PUTBACK;
650	PL_op = (OP *)&myop;	834	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	835	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	836	SPAGAIN;
653	}	837	}
654		838
655	ENTER; /* necessary e.g. for dounwind */	839	/* this newly created coroutine might be run on an existing cctx which most
		840	* likely was suspended in set_stacklevel, called from entersub.
		841	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		842	* so we ENTER here for symmetry
		843	*/
		844	ENTER;
		845	}
		846
		847	static void
		848	coro_destruct (pTHX_ struct coro *coro)
		849	{
		850	if (!IN_DESTRUCT)
		851	{
		852	/* restore all saved variables and stuff */
		853	LEAVE_SCOPE (0);
		854	assert (PL_tmps_floor == -1);
		855
		856	/* free all temporaries */
		857	FREETMPS;
		858	assert (PL_tmps_ix == -1);
		859
		860	/* unwind all extra stacks */
		861	POPSTACK_TO (PL_mainstack);
		862
		863	/* unwind main stack */
		864	dounwind (-1);
		865	}
		866
		867	SvREFCNT_dec (GvSV (PL_defgv));
		868	SvREFCNT_dec (GvAV (PL_defgv));
		869	SvREFCNT_dec (GvSV (PL_errgv));
		870	SvREFCNT_dec (PL_defoutgv);
		871	SvREFCNT_dec (PL_rs);
		872	SvREFCNT_dec (GvSV (irsgv));
		873
		874	SvREFCNT_dec (PL_diehook);
		875	SvREFCNT_dec (PL_warnhook);
		876
		877	SvREFCNT_dec (coro->saved_deffh);
		878	SvREFCNT_dec (coro->throw);
		879
		880	coro_destruct_stacks (aTHX);
656	}	881	}
657		882
658	static void	883	static void
659	free_coro_mortal (pTHX)	884	free_coro_mortal (pTHX)
660	{	885	{
661	if (coro_mortal)	886	if (expect_true (coro_mortal))
662	{	887	{
663	SvREFCNT_dec (coro_mortal);	888	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	889	coro_mortal = 0;
665	}	890	}
666	}	891	}
…		…
695	bot = PL_stack_base + cx->blk_oldsp + 1;	920	bot = PL_stack_base + cx->blk_oldsp + 1;
696	top = cx->blk_gimme == G_ARRAY ? SP + 1	921	top = cx->blk_gimme == G_ARRAY ? SP + 1
697	: cx->blk_gimme == G_SCALAR ? bot + 1	922	: cx->blk_gimme == G_SCALAR ? bot + 1
698	: bot;	923	: bot;
699		924
		925	av_extend (av, top - bot);
700	while (bot < top)	926	while (bot < top)
701	av_push (av, SvREFCNT_inc (*bot++));	927	av_push (av, SvREFCNT_inc_NN (*bot++));
702		928
703	PL_runops = RUNOPS_DEFAULT;	929	PL_runops = RUNOPS_DEFAULT;
704	ENTER;	930	ENTER;
705	SAVETMPS;	931	SAVETMPS;
706	EXTEND (SP, 3);	932	EXTEND (SP, 3);
…		…
744	SAVETMPS;	970	SAVETMPS;
745	EXTEND (SP, 3);	971	EXTEND (SP, 3);
746	PUSHMARK (SP);	972	PUSHMARK (SP);
747	PUSHs (&PL_sv_yes);	973	PUSHs (&PL_sv_yes);
748	PUSHs (fullname);	974	PUSHs (fullname);
749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	975	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750	PUTBACK;	976	PUTBACK;
751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	977	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
752	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	978	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753	SPAGAIN;	979	SPAGAIN;
754	FREETMPS;	980	FREETMPS;
…		…
790		1016
791	/* inject a fake call to Coro::State::_cctx_init into the execution */	1017	/* inject a fake call to Coro::State::_cctx_init into the execution */
792	/* _cctx_init should be careful, as it could be called at almost any time */	1018	/* _cctx_init should be careful, as it could be called at almost any time */
793	/* during execution of a perl program */	1019	/* during execution of a perl program */
794	static void NOINLINE	1020	static void NOINLINE
795	prepare_cctx (pTHX_ coro_cctx *cctx)	1021	cctx_prepare (pTHX_ coro_cctx *cctx)
796	{	1022	{
797	dSP;	1023	dSP;
798	LOGOP myop;	1024	LOGOP myop;
799		1025
800	PL_top_env = &PL_start_env;	1026	PL_top_env = &PL_start_env;
…		…
818		1044
819	/*	1045	/*
820	* this is a _very_ stripped down perl interpreter ;)	1046	* this is a _very_ stripped down perl interpreter ;)
821	*/	1047	*/
822	static void	1048	static void
823	coro_run (void *arg)	1049	cctx_run (void *arg)
824	{	1050	{
825	dTHX;	1051	dTHX;
826		1052
827	/* coro_run is the alternative tail of transfer(), so unlock here. */	1053	/* cctx_run is the alternative tail of transfer(), so unlock here. */
828	UNLOCK;	1054	UNLOCK;
829		1055
830	/* we now skip the entersub that lead to transfer() */	1056	/* we now skip the entersub that lead to transfer() */
831	PL_op = PL_op->op_next;	1057	PL_op = PL_op->op_next;
832		1058
833	/* inject a fake subroutine call to cctx_init */	1059	/* inject a fake subroutine call to cctx_init */
834	prepare_cctx (aTHX_ (coro_cctx *)arg);	1060	cctx_prepare (aTHX_ (coro_cctx *)arg);
835		1061
836	/* somebody or something will hit me for both perl_run and PL_restartop */	1062	/* somebody or something will hit me for both perl_run and PL_restartop */
837	PL_restartop = PL_op;	1063	PL_restartop = PL_op;
838	perl_run (PL_curinterp);	1064	perl_run (PL_curinterp);
839		1065
…		…
854	coro_cctx *cctx;	1080	coro_cctx *cctx;
855	void *stack_start;	1081	void *stack_start;
856	size_t stack_size;	1082	size_t stack_size;
857		1083
858	++cctx_count;	1084	++cctx_count;
859
860	Newz (0, cctx, 1, coro_cctx);	1085	Newz (0, cctx, 1, coro_cctx);
861		1086
862	#if HAVE_MMAP	1087	#if HAVE_MMAP
863
864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1088	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865	/* mmap supposedly does allocate-on-write for us */	1089	/* mmap supposedly does allocate-on-write for us */
866	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1090	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867		1091
868	if (cctx->sptr != (void *)-1)	1092	if (cctx->sptr != (void *)-1)
…		…
889	stack_start = cctx->sptr;	1113	stack_start = cctx->sptr;
890	stack_size = cctx->ssize;	1114	stack_size = cctx->ssize;
891	}	1115	}
892		1116
893	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1117	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1118	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895		1119
896	return cctx;	1120	return cctx;
897	}	1121	}
898		1122
899	static void	1123	static void
…		…
901	{	1125	{
902	if (!cctx)	1126	if (!cctx)
903	return;	1127	return;
904		1128
905	--cctx_count;	1129	--cctx_count;
		1130	coro_destroy (&cctx->cctx);
906		1131
		1132	/* coro_transfer creates new, empty cctx's */
		1133	if (cctx->sptr)
		1134	{
907	#if CORO_USE_VALGRIND	1135	#if CORO_USE_VALGRIND
908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1136	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
909	#endif	1137	#endif
910		1138
911	#if HAVE_MMAP	1139	#if HAVE_MMAP
912	if (cctx->flags & CC_MAPPED)	1140	if (cctx->flags & CC_MAPPED)
913	munmap (cctx->sptr, cctx->ssize);	1141	munmap (cctx->sptr, cctx->ssize);
914	else	1142	else
915	#endif	1143	#endif
916	Safefree (cctx->sptr);	1144	Safefree (cctx->sptr);
		1145	}
917		1146
918	Safefree (cctx);	1147	Safefree (cctx);
919	}	1148	}
		1149
		1150	/* wether this cctx should be destructed */
		1151	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
920		1152
921	static coro_cctx *	1153	static coro_cctx *
922	cctx_get (pTHX)	1154	cctx_get (pTHX)
923	{	1155	{
924	while (cctx_first)	1156	while (expect_true (cctx_first))
925	{	1157	{
926	coro_cctx *cctx = cctx_first;	1158	coro_cctx *cctx = cctx_first;
927	cctx_first = cctx->next;	1159	cctx_first = cctx->next;
928	--cctx_idle;	1160	--cctx_idle;
929		1161
930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1162	if (expect_true (!CCTX_EXPIRED (cctx)))
931	return cctx;	1163	return cctx;
932		1164
933	cctx_destroy (cctx);	1165	cctx_destroy (cctx);
934	}	1166	}
935		1167
…		…
937	}	1169	}
938		1170
939	static void	1171	static void
940	cctx_put (coro_cctx *cctx)	1172	cctx_put (coro_cctx *cctx)
941	{	1173	{
		1174	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1175
942	/* free another cctx if overlimit */	1176	/* free another cctx if overlimit */
943	if (cctx_idle >= MAX_IDLE_CCTX)	1177	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
944	{	1178	{
945	coro_cctx *first = cctx_first;	1179	coro_cctx *first = cctx_first;
946	cctx_first = first->next;	1180	cctx_first = first->next;
947	--cctx_idle;	1181	--cctx_idle;
948		1182
…		…
954	cctx_first = cctx;	1188	cctx_first = cctx;
955	}	1189	}
956		1190
957	/** coroutine switching *****************************************************/	1191	/** coroutine switching *****************************************************/
958		1192
959	static void NOINLINE	1193	static void
960	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1194	transfer_check (pTHX_ struct coro *prev, struct coro *next)
961	{	1195	{
962	if (prev != next)	1196	if (expect_true (prev != next))
963	{	1197	{
964	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1198	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
965	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1199	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
966		1200
967	if (next->flags & CF_RUNNING)	1201	if (expect_false (next->flags & CF_RUNNING))
968	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1202	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
969		1203
970	if (next->flags & CF_DESTROYED)	1204	if (expect_false (next->flags & CF_DESTROYED))
971	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1205	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
972		1206
		1207	#if !PERL_VERSION_ATLEAST (5,10,0)
973	if (PL_lex_state != LEX_NOTPARSING)	1208	if (expect_false (PL_lex_state != LEX_NOTPARSING))
974	croak ("Coro::State::transfer called while parsing, but this is not supported");	1209	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1210	#endif
975	}	1211	}
976	}	1212	}
977		1213
978	/* always use the TRANSFER macro */	1214	/* always use the TRANSFER macro */
979	static void NOINLINE	1215	static void NOINLINE
980	transfer (pTHX_ struct coro *prev, struct coro *next)	1216	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981	{	1217	{
982	dSTACKLEVEL;	1218	dSTACKLEVEL;
983		1219
984	/* sometimes transfer is only called to set idle_sp */	1220	/* sometimes transfer is only called to set idle_sp */
985	if (!next)	1221	if (expect_false (!next))
986	{	1222	{
987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1223	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
988	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1224	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989	}	1225	}
990	else if (prev != next)	1226	else if (expect_true (prev != next))
991	{	1227	{
		1228	static volatile int has_throw;
992	coro_cctx *prev__cctx;	1229	coro_cctx *prev__cctx;
993		1230
994	if (prev->flags & CF_NEW)	1231	if (expect_false (prev->flags & CF_NEW))
995	{	1232	{
996	/* create a new empty context */	1233	/* create a new empty/source context */
		1234	++cctx_count;
997	Newz (0, prev->cctx, 1, coro_cctx);	1235	New (0, prev->cctx, 1, coro_cctx);
		1236	prev->cctx->sptr = 0;
		1237	coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
		1238
998	prev->flags &= ~CF_NEW;	1239	prev->flags &= ~CF_NEW;
999	prev->flags |= CF_RUNNING;	1240	prev->flags |= CF_RUNNING;
1000	}	1241	}
1001		1242
1002	prev->flags &= ~CF_RUNNING;	1243	prev->flags &= ~CF_RUNNING;
1003	next->flags |= CF_RUNNING;	1244	next->flags |= CF_RUNNING;
1004		1245
1005	LOCK;	1246	LOCK;
1006		1247
		1248	/* first get rid of the old state */
		1249	save_perl (aTHX_ prev);
		1250
1007	if (next->flags & CF_NEW)	1251	if (expect_false (next->flags & CF_NEW))
1008	{	1252	{
1009	/* need to start coroutine */	1253	/* need to start coroutine */
1010	next->flags &= ~CF_NEW;	1254	next->flags &= ~CF_NEW;
1011	/* first get rid of the old state */
1012	save_perl (aTHX_ prev);
1013	/* setup coroutine call */	1255	/* setup coroutine call */
1014	setup_coro (aTHX_ next);	1256	coro_setup (aTHX_ next);
1015	}	1257	}
1016	else	1258	else
1017	{
1018	/* coroutine already started */
1019	save_perl (aTHX_ prev);
1020	load_perl (aTHX_ next);	1259	load_perl (aTHX_ next);
1021	}
1022		1260
1023	prev__cctx = prev->cctx;	1261	prev__cctx = prev->cctx;
1024		1262
1025	/* possibly "free" the cctx */	1263	/* possibly "free" the cctx */
1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1264	if (expect_true (
		1265	prev__cctx->idle_sp == STACKLEVEL
		1266	&& !(prev__cctx->flags & CC_TRACE)
		1267	&& !force_cctx
		1268	))
1027	{	1269	{
1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1270	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1029	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1271	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1030		1272
1031	prev->cctx = 0;	1273	prev->cctx = 0;
1032		1274
		1275	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1276	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1277	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1278	if (!next->cctx)
		1279	next->cctx = cctx_get (aTHX);
		1280
1033	cctx_put (prev__cctx);	1281	cctx_put (prev__cctx);
1034	}	1282	}
1035		1283
1036	++next->usecount;	1284	++next->usecount;
1037		1285
1038	if (!next->cctx)	1286	if (expect_true (!next->cctx))
1039	next->cctx = cctx_get (aTHX);	1287	next->cctx = cctx_get (aTHX);
1040		1288
		1289	has_throw = !!next->throw;
		1290
1041	if (prev__cctx != next->cctx)	1291	if (expect_false (prev__cctx != next->cctx))
1042	{	1292	{
1043	prev__cctx->top_env = PL_top_env;	1293	prev__cctx->top_env = PL_top_env;
1044	PL_top_env = next->cctx->top_env;	1294	PL_top_env = next->cctx->top_env;
1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1295	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046	}	1296	}
1047		1297
1048	free_coro_mortal (aTHX);	1298	free_coro_mortal (aTHX);
1049	UNLOCK;	1299	UNLOCK;
		1300
		1301	if (expect_false (has_throw))
		1302	{
		1303	struct coro *coro = SvSTATE (coro_current);
		1304
		1305	if (coro->throw)
		1306	{
		1307	SV *exception = coro->throw;
		1308	coro->throw = 0;
		1309	sv_setsv (ERRSV, exception);
		1310	croak (0);
		1311	}
		1312	}
1050	}	1313	}
1051	}	1314	}
1052		1315
1053	struct transfer_args	1316	struct transfer_args
1054	{	1317	{
1055	struct coro *prev, *next;	1318	struct coro *prev, *next;
1056	};	1319	};
1057		1320
1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1321	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1059	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1322	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060		1323
1061	/** high level stuff ********************************************************/	1324	/** high level stuff ********************************************************/
1062		1325
1063	static int	1326	static int
…		…
1081		1344
1082	if (coro->mainstack && coro->mainstack != main_mainstack)	1345	if (coro->mainstack && coro->mainstack != main_mainstack)
1083	{	1346	{
1084	struct coro temp;	1347	struct coro temp;
1085		1348
1086	assert (!(coro->flags & CF_RUNNING));
1087
1088	Zero (&temp, 1, struct coro);
1089	temp.save = CORO_SAVE_ALL;
1090
1091	if (coro->flags & CF_RUNNING)	1349	if (coro->flags & CF_RUNNING)
1092	croak ("FATAL: tried to destroy currently running coroutine");	1350	croak ("FATAL: tried to destroy currently running coroutine");
1093		1351
1094	save_perl (aTHX_ &temp);	1352	save_perl (aTHX_ &temp);
1095	load_perl (aTHX_ coro);	1353	load_perl (aTHX_ coro);
1096		1354
1097	coro_destroy_stacks (aTHX);	1355	coro_destruct (aTHX_ coro);
1098		1356
1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1357	load_perl (aTHX_ &temp);
1100		1358
1101	coro->mainstack = 0;	1359	coro->slot = 0;
1102	}	1360	}
1103		1361
1104	cctx_destroy (coro->cctx);	1362	cctx_destroy (coro->cctx);
1105	SvREFCNT_dec (coro->args);	1363	SvREFCNT_dec (coro->args);
1106		1364
…		…
1162	{	1420	{
1163	dTHX;	1421	dTHX;
1164	struct transfer_args ta;	1422	struct transfer_args ta;
1165		1423
1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1424	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167	TRANSFER (ta);	1425	TRANSFER (ta, 1);
1168	}
1169
1170	static int
1171	api_save (SV *coro_sv, int new_save)
1172	{
1173	dTHX;
1174	struct coro *coro = SvSTATE (coro_sv);
1175	int old_save = coro->save;
1176
1177	if (new_save >= 0)
1178	coro->save = new_save;
1179
1180	return old_save;
1181	}	1426	}
1182		1427
1183	/** Coro ********************************************************************/	1428	/** Coro ********************************************************************/
1184		1429
1185	static void	1430	static void
…		…
1187	{	1432	{
1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1433	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1189	}	1434	}
1190		1435
1191	static SV *	1436	static SV *
1192	coro_deq (pTHX_ int min_prio)	1437	coro_deq (pTHX)
1193	{	1438	{
1194	int prio = PRIO_MAX - PRIO_MIN;	1439	int prio;
1195		1440
1196	min_prio -= PRIO_MIN;
1197	if (min_prio < 0)
1198	min_prio = 0;
1199
1200	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1441	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201	if (AvFILLp (coro_ready [prio]) >= 0)	1442	if (AvFILLp (coro_ready [prio]) >= 0)
1202	return av_shift (coro_ready [prio]);	1443	return av_shift (coro_ready [prio]);
1203		1444
1204	return 0;	1445	return 0;
1205	}	1446	}
…		…
1207	static int	1448	static int
1208	api_ready (SV *coro_sv)	1449	api_ready (SV *coro_sv)
1209	{	1450	{
1210	dTHX;	1451	dTHX;
1211	struct coro *coro;	1452	struct coro *coro;
		1453	SV *sv_hook;
		1454	void (*xs_hook)(void);
1212		1455
1213	if (SvROK (coro_sv))	1456	if (SvROK (coro_sv))
1214	coro_sv = SvRV (coro_sv);	1457	coro_sv = SvRV (coro_sv);
1215		1458
1216	coro = SvSTATE (coro_sv);	1459	coro = SvSTATE (coro_sv);
…		…
1219	return 0;	1462	return 0;
1220		1463
1221	coro->flags |= CF_READY;	1464	coro->flags |= CF_READY;
1222		1465
1223	LOCK;	1466	LOCK;
		1467
		1468	sv_hook = coro_nready ? 0 : coro_readyhook;
		1469	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1470
1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1471	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1225	++coro_nready;	1472	++coro_nready;
		1473
1226	UNLOCK;	1474	UNLOCK;
		1475
		1476	if (sv_hook)
		1477	{
		1478	dSP;
		1479
		1480	ENTER;
		1481	SAVETMPS;
		1482
		1483	PUSHMARK (SP);
		1484	PUTBACK;
		1485	call_sv (sv_hook, G_DISCARD);
		1486	SPAGAIN;
		1487
		1488	FREETMPS;
		1489	LEAVE;
		1490	}
		1491
		1492	if (xs_hook)
		1493	xs_hook ();
1227		1494
1228	return 1;	1495	return 1;
1229	}	1496	}
1230		1497
1231	static int	1498	static int
…		…
1241	SV *prev_sv, *next_sv;	1508	SV *prev_sv, *next_sv;
1242		1509
1243	for (;;)	1510	for (;;)
1244	{	1511	{
1245	LOCK;	1512	LOCK;
1246	next_sv = coro_deq (aTHX_ PRIO_MIN);	1513	next_sv = coro_deq (aTHX);
1247		1514
1248	/* nothing to schedule: call the idle handler */	1515	/* nothing to schedule: call the idle handler */
1249	if (!next_sv)	1516	if (expect_false (!next_sv))
1250	{	1517	{
1251	dSP;	1518	dSP;
1252	UNLOCK;	1519	UNLOCK;
1253		1520
1254	ENTER;	1521	ENTER;
1255	SAVETMPS;	1522	SAVETMPS;
1256		1523
1257	PUSHMARK (SP);	1524	PUSHMARK (SP);
1258	PUTBACK;	1525	PUTBACK;
1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1526	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1527	SPAGAIN;
1260		1528
1261	FREETMPS;	1529	FREETMPS;
1262	LEAVE;	1530	LEAVE;
1263	continue;	1531	continue;
1264	}	1532	}
1265		1533
1266	ta->next = SvSTATE (next_sv);	1534	ta->next = SvSTATE (next_sv);
1267		1535
1268	/* cannot transfer to destroyed coros, skip and look for next */	1536	/* cannot transfer to destroyed coros, skip and look for next */
1269	if (ta->next->flags & CF_DESTROYED)	1537	if (expect_false (ta->next->flags & CF_DESTROYED))
1270	{	1538	{
1271	UNLOCK;	1539	UNLOCK;
1272	SvREFCNT_dec (next_sv);	1540	SvREFCNT_dec (next_sv);
1273	/* coro_nready is already taken care of by destroy */	1541	/* coro_nready is already taken care of by destroy */
1274	continue;	1542	continue;
…		…
1319	{	1587	{
1320	dTHX;	1588	dTHX;
1321	struct transfer_args ta;	1589	struct transfer_args ta;
1322		1590
1323	prepare_schedule (aTHX_ &ta);	1591	prepare_schedule (aTHX_ &ta);
1324	TRANSFER (ta);	1592	TRANSFER (ta, 1);
1325	}	1593	}
1326		1594
1327	static int	1595	static int
1328	api_cede (void)	1596	api_cede (void)
1329	{	1597	{
1330	dTHX;	1598	dTHX;
1331	struct transfer_args ta;	1599	struct transfer_args ta;
1332		1600
1333	prepare_cede (aTHX_ &ta);	1601	prepare_cede (aTHX_ &ta);
1334		1602
1335	if (ta.prev != ta.next)	1603	if (expect_true (ta.prev != ta.next))
1336	{	1604	{
1337	TRANSFER (ta);	1605	TRANSFER (ta, 1);
1338	return 1;	1606	return 1;
1339	}	1607	}
1340	else	1608	else
1341	return 0;	1609	return 0;
1342	}	1610	}
…		…
1347	dTHX;	1615	dTHX;
1348	struct transfer_args ta;	1616	struct transfer_args ta;
1349		1617
1350	if (prepare_cede_notself (aTHX_ &ta))	1618	if (prepare_cede_notself (aTHX_ &ta))
1351	{	1619	{
1352	TRANSFER (ta);	1620	TRANSFER (ta, 1);
1353	return 1;	1621	return 1;
1354	}	1622	}
1355	else	1623	else
1356	return 0;	1624	return 0;
1357	}	1625	}
…		…
1376	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1644	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377		1645
1378	if (coro->flags & CF_RUNNING)	1646	if (coro->flags & CF_RUNNING)
1379	PL_runops = RUNOPS_DEFAULT;	1647	PL_runops = RUNOPS_DEFAULT;
1380	else	1648	else
1381	coro->runops = RUNOPS_DEFAULT;	1649	coro->slot->runops = RUNOPS_DEFAULT;
		1650	}
		1651	}
		1652
		1653	static int
		1654	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1655	{
		1656	AV *padlist;
		1657	AV *av = (AV *)mg->mg_obj;
		1658
		1659	abort ();
		1660
		1661	return 0;
		1662	}
		1663
		1664	static MGVTBL coro_gensub_vtbl = {
		1665	0, 0, 0, 0,
		1666	coro_gensub_free
		1667	};
		1668
		1669	/*****************************************************************************/
		1670	/* PerlIO::cede */
		1671
		1672	typedef struct
		1673	{
		1674	PerlIOBuf base;
		1675	NV next, every;
		1676	} PerlIOCede;
		1677
		1678	static IV
		1679	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1680	{
		1681	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1682
		1683	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1684	self->next = nvtime () + self->every;
		1685
		1686	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1687	}
		1688
		1689	static SV *
		1690	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1691	{
		1692	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1693
		1694	return newSVnv (self->every);
		1695	}
		1696
		1697	static IV
		1698	PerlIOCede_flush (pTHX_ PerlIO *f)
		1699	{
		1700	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1701	double now = nvtime ();
		1702
		1703	if (now >= self->next)
1382	}	1704	{
		1705	api_cede ();
		1706	self->next = now + self->every;
		1707	}
		1708
		1709	return PerlIOBuf_flush (aTHX_ f);
1383	}	1710	}
		1711
		1712	static PerlIO_funcs PerlIO_cede =
		1713	{
		1714	sizeof(PerlIO_funcs),
		1715	"cede",
		1716	sizeof(PerlIOCede),
		1717	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1718	PerlIOCede_pushed,
		1719	PerlIOBuf_popped,
		1720	PerlIOBuf_open,
		1721	PerlIOBase_binmode,
		1722	PerlIOCede_getarg,
		1723	PerlIOBase_fileno,
		1724	PerlIOBuf_dup,
		1725	PerlIOBuf_read,
		1726	PerlIOBuf_unread,
		1727	PerlIOBuf_write,
		1728	PerlIOBuf_seek,
		1729	PerlIOBuf_tell,
		1730	PerlIOBuf_close,
		1731	PerlIOCede_flush,
		1732	PerlIOBuf_fill,
		1733	PerlIOBase_eof,
		1734	PerlIOBase_error,
		1735	PerlIOBase_clearerr,
		1736	PerlIOBase_setlinebuf,
		1737	PerlIOBuf_get_base,
		1738	PerlIOBuf_bufsiz,
		1739	PerlIOBuf_get_ptr,
		1740	PerlIOBuf_get_cnt,
		1741	PerlIOBuf_set_ptrcnt,
		1742	};
		1743
1384		1744
1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1745	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386		1746
1387	PROTOTYPES: DISABLE	1747	PROTOTYPES: DISABLE
1388		1748
1389	BOOT:	1749	BOOT:
1390	{	1750	{
1391	#ifdef USE_ITHREADS	1751	#ifdef USE_ITHREADS
1392	MUTEX_INIT (&coro_mutex);	1752	MUTEX_INIT (&coro_lock);
1393	#endif	1753	#endif
1394	BOOT_PAGESIZE;	1754	BOOT_PAGESIZE;
		1755
		1756	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1757	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1758
		1759	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1760	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1761	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1762
		1763	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1764	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1765	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1766
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1767	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1768
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1769	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1770	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1771	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1772	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402		1773
1403	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1404	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1405	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1406	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1407	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1408	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1409	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1410
1411	main_mainstack = PL_mainstack;	1774	main_mainstack = PL_mainstack;
1412	main_top_env = PL_top_env;	1775	main_top_env = PL_top_env;
1413		1776
1414	while (main_top_env->je_prev)	1777	while (main_top_env->je_prev)
1415	main_top_env = main_top_env->je_prev;	1778	main_top_env = main_top_env->je_prev;
1416		1779
1417	coroapi.ver = CORO_API_VERSION;	1780	coroapi.ver = CORO_API_VERSION;
		1781	coroapi.rev = CORO_API_REVISION;
1418	coroapi.transfer = api_transfer;	1782	coroapi.transfer = api_transfer;
		1783
		1784	{
		1785	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1786
		1787	if (!svp) croak ("Time::HiRes is required");
		1788	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1789
		1790	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1791	}
1419		1792
1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1793	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421	}	1794	}
1422		1795
1423	SV *	1796	SV *
1424	new (char *klass, ...)	1797	new (char *klass, ...)
1425	CODE:	1798	CODE:
1426	{	1799	{
1427	struct coro *coro;	1800	struct coro *coro;
		1801	MAGIC *mg;
1428	HV *hv;	1802	HV *hv;
1429	int i;	1803	int i;
1430		1804
1431	Newz (0, coro, 1, struct coro);	1805	Newz (0, coro, 1, struct coro);
1432	coro->args = newAV ();	1806	coro->args = newAV ();
1433	coro->save = CORO_SAVE_DEF;
1434	coro->flags = CF_NEW;	1807	coro->flags = CF_NEW;
1435		1808
1436	if (coro_first) coro_first->prev = coro;	1809	if (coro_first) coro_first->prev = coro;
1437	coro->next = coro_first;	1810	coro->next = coro_first;
1438	coro_first = coro;	1811	coro_first = coro;
1439		1812
1440	coro->hv = hv = newHV ();	1813	coro->hv = hv = newHV ();
1441	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1814	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1815	mg->mg_flags |= MGf_DUP;
1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1816	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443		1817
		1818	av_extend (coro->args, items - 1);
1444	for (i = 1; i < items; i++)	1819	for (i = 1; i < items; i++)
1445	av_push (coro->args, newSVsv (ST (i)));	1820	av_push (coro->args, newSVsv (ST (i)));
1446	}	1821	}
1447	OUTPUT:	1822	OUTPUT:
1448	RETVAL	1823	RETVAL
1449		1824
1450	int	1825	# these not obviously related functions are all rolled into the same xs
1451	save (SV *coro, int new_save = -1)	1826	# function to increase chances that they all will call transfer with the same
1452	CODE:	1827	# stack offset
1453	RETVAL = api_save (coro, new_save);
1454	OUTPUT:
1455	RETVAL
1456
1457	int
1458	save_also (SV *coro_sv, int save_also)
1459	CODE:
1460	{
1461	struct coro *coro = SvSTATE (coro_sv);
1462	RETVAL = coro->save;
1463	coro->save |= save_also;
1464	}
1465	OUTPUT:
1466	RETVAL
1467
1468	void	1828	void
1469	_set_stacklevel (...)	1829	_set_stacklevel (...)
1470	ALIAS:	1830	ALIAS:
1471	Coro::State::transfer = 1	1831	Coro::State::transfer = 1
1472	Coro::schedule = 2	1832	Coro::schedule = 2
…		…
1474	Coro::cede_notself = 4	1834	Coro::cede_notself = 4
1475	CODE:	1835	CODE:
1476	{	1836	{
1477	struct transfer_args ta;	1837	struct transfer_args ta;
1478		1838
		1839	PUTBACK;
1479	switch (ix)	1840	switch (ix)
1480	{	1841	{
1481	case 0:	1842	case 0:
1482	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1843	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1483	ta.next = 0;	1844	ta.next = 0;
1484	break;	1845	break;
1485		1846
1486	case 1:	1847	case 1:
1487	if (items != 2)	1848	if (items != 2)
1488	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1849	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1489		1850
1490	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1851	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1491	break;	1852	break;
1492		1853
1493	case 2:	1854	case 2:
…		…
1502	if (!prepare_cede_notself (aTHX_ &ta))	1863	if (!prepare_cede_notself (aTHX_ &ta))
1503	XSRETURN_EMPTY;	1864	XSRETURN_EMPTY;
1504		1865
1505	break;	1866	break;
1506	}	1867	}
		1868	SPAGAIN;
1507		1869
1508	BARRIER;	1870	BARRIER;
		1871	PUTBACK;
1509	TRANSFER (ta);	1872	TRANSFER (ta, 0);
1510		1873	SPAGAIN; /* might be the sp of a different coroutine now */
1511	if (GIMME_V != G_VOID && ta.next != ta.prev)	1874	/* be extra careful not to ever do anything after TRANSFER */
1512	XSRETURN_YES;
1513	}	1875	}
1514		1876
1515	bool	1877	bool
1516	_destroy (SV *coro_sv)	1878	_destroy (SV *coro_sv)
1517	CODE:	1879	CODE:
1518	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1880	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1519	OUTPUT:	1881	OUTPUT:
1520	RETVAL	1882	RETVAL
1521		1883
1522	void	1884	void
1523	_exit (code)	1885	_exit (int code)
1524	int code
1525	PROTOTYPE: $	1886	PROTOTYPE: $
1526	CODE:	1887	CODE:
1527	_exit (code);	1888	_exit (code);
1528		1889
1529	int	1890	int
…		…
1563	call (Coro::State coro, SV *coderef)	1924	call (Coro::State coro, SV *coderef)
1564	ALIAS:	1925	ALIAS:
1565	eval = 1	1926	eval = 1
1566	CODE:	1927	CODE:
1567	{	1928	{
1568	if (coro->mainstack)	1929	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1569	{	1930	{
1570	struct coro temp;	1931	struct coro temp;
1571	Zero (&temp, 1, struct coro);
1572	temp.save = CORO_SAVE_ALL;
1573		1932
1574	if (!(coro->flags & CF_RUNNING))	1933	if (!(coro->flags & CF_RUNNING))
1575	{	1934	{
		1935	PUTBACK;
1576	save_perl (aTHX_ &temp);	1936	save_perl (aTHX_ &temp);
1577	load_perl (aTHX_ coro);	1937	load_perl (aTHX_ coro);
1578	}	1938	}
1579		1939
1580	{	1940	{
1581	dSP;	1941	dSP;
1582	ENTER;	1942	ENTER;
1583	SAVETMPS;	1943	SAVETMPS;
		1944	PUTBACK;
		1945	PUSHSTACK;
1584	PUSHMARK (SP);	1946	PUSHMARK (SP);
1585	PUTBACK;	1947
1586	if (ix)	1948	if (ix)
1587	eval_sv (coderef, 0);	1949	eval_sv (coderef, 0);
1588	else	1950	else
1589	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1951	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1952
		1953	POPSTACK;
1590	SPAGAIN;	1954	SPAGAIN;
1591	FREETMPS;	1955	FREETMPS;
1592	LEAVE;	1956	LEAVE;
1593	PUTBACK;	1957	PUTBACK;
1594	}	1958	}
1595		1959
1596	if (!(coro->flags & CF_RUNNING))	1960	if (!(coro->flags & CF_RUNNING))
1597	{	1961	{
1598	save_perl (aTHX_ coro);	1962	save_perl (aTHX_ coro);
1599	load_perl (aTHX_ &temp);	1963	load_perl (aTHX_ &temp);
		1964	SPAGAIN;
1600	}	1965	}
1601	}	1966	}
1602	}	1967	}
1603		1968
1604	SV *	1969	SV *
…		…
1616		1981
1617	void	1982	void
1618	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1983	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1619		1984
1620	SV *	1985	SV *
1621	has_stack (Coro::State coro)	1986	has_cctx (Coro::State coro)
1622	PROTOTYPE: $	1987	PROTOTYPE: $
1623	CODE:	1988	CODE:
1624	RETVAL = boolSV (!!coro->cctx);	1989	RETVAL = boolSV (!!coro->cctx);
1625	OUTPUT:	1990	OUTPUT:
1626	RETVAL	1991	RETVAL
…		…
1645	case 1: RETVAL = coro->usecount; break;	2010	case 1: RETVAL = coro->usecount; break;
1646	}	2011	}
1647	OUTPUT:	2012	OUTPUT:
1648	RETVAL	2013	RETVAL
1649		2014
		2015	void
		2016	force_cctx ()
		2017	CODE:
		2018	struct coro *coro = SvSTATE (coro_current);
		2019	coro->cctx->idle_sp = 0;
		2020
		2021	void
		2022	swap_defsv (Coro::State self)
		2023	PROTOTYPE: $
		2024	ALIAS:
		2025	swap_defav = 1
		2026	CODE:
		2027	if (!self->slot)
		2028	croak ("cannot swap state with coroutine that has no saved state");
		2029	else
		2030	{
		2031	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2032	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2033
		2034	SV *tmp = *src; *src = *dst; *dst = tmp;
		2035	}
1650		2036
1651	MODULE = Coro::State PACKAGE = Coro	2037	MODULE = Coro::State PACKAGE = Coro
1652		2038
1653	BOOT:	2039	BOOT:
1654	{	2040	{
1655	int i;	2041	int i;
1656		2042
1657	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1658	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1659	av_async_pool = get_av ("Coro::async_pool", TRUE);	2043	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2044	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2045	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1660		2046
1661	coro_current = get_sv ("Coro::current", FALSE);	2047	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1662	SvREADONLY_on (coro_current);	2048	SvREADONLY_on (coro_current);
1663		2049
1664	coro_stash = gv_stashpv ("Coro", TRUE);	2050	coro_stash = gv_stashpv ("Coro", TRUE);
1665		2051
1666	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2052	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1667	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2053	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1668	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2054	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1669	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2055	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1672		2058
1673	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2059	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1674	coro_ready[i] = newAV ();	2060	coro_ready[i] = newAV ();
1675		2061
1676	{	2062	{
1677	SV *sv = perl_get_sv("Coro::API", 1);	2063	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2064	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1678		2065
1679	coroapi.schedule = api_schedule;	2066	coroapi.schedule = api_schedule;
1680	coroapi.save = api_save;
1681	coroapi.cede = api_cede;	2067	coroapi.cede = api_cede;
1682	coroapi.cede_notself = api_cede_notself;	2068	coroapi.cede_notself = api_cede_notself;
1683	coroapi.ready = api_ready;	2069	coroapi.ready = api_ready;
1684	coroapi.is_ready = api_is_ready;	2070	coroapi.is_ready = api_is_ready;
1685	coroapi.nready = &coro_nready;	2071	coroapi.nready = &coro_nready;
…		…
1694	void	2080	void
1695	_set_current (SV *current)	2081	_set_current (SV *current)
1696	PROTOTYPE: $	2082	PROTOTYPE: $
1697	CODE:	2083	CODE:
1698	SvREFCNT_dec (SvRV (coro_current));	2084	SvREFCNT_dec (SvRV (coro_current));
1699	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2085	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2086
		2087	void
		2088	_set_readyhook (SV *hook)
		2089	PROTOTYPE: $
		2090	CODE:
		2091	LOCK;
		2092	SvREFCNT_dec (coro_readyhook);
		2093	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2094	UNLOCK;
1700		2095
1701	int	2096	int
1702	prio (Coro::State coro, int newprio = 0)	2097	prio (Coro::State coro, int newprio = 0)
1703	ALIAS:	2098	ALIAS:
1704	nice = 1	2099	nice = 1
…		…
1734	CODE:	2129	CODE:
1735	RETVAL = coro_nready;	2130	RETVAL = coro_nready;
1736	OUTPUT:	2131	OUTPUT:
1737	RETVAL	2132	RETVAL
1738		2133
		2134	void
		2135	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2136	PROTOTYPE: $;$
		2137	CODE:
		2138	SvREFCNT_dec (self->throw);
		2139	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2140
1739	# for async_pool speedup	2141	# for async_pool speedup
1740	void	2142	void
1741	_pool_1 (SV *cb)	2143	_pool_1 (SV *cb)
1742	CODE:	2144	CODE:
1743	{	2145	{
1744	int i, len;	2146	struct coro *coro = SvSTATE (coro_current);
1745	HV *hv = (HV *)SvRV (coro_current);	2147	HV *hv = (HV *)SvRV (coro_current);
1746	AV *defav = GvAV (PL_defgv);	2148	AV *defav = GvAV (PL_defgv);
1747	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2149	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1748	AV *invoke_av;	2150	AV *invoke_av;
		2151	int i, len;
1749		2152
1750	if (!invoke)	2153	if (!invoke)
		2154	{
		2155	SV *old = PL_diehook;
		2156	PL_diehook = 0;
		2157	SvREFCNT_dec (old);
1751	croak ("\3terminate\2\n");	2158	croak ("\3async_pool terminate\2\n");
		2159	}
		2160
		2161	SvREFCNT_dec (coro->saved_deffh);
		2162	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1752		2163
1753	hv_store (hv, "desc", sizeof ("desc") - 1,	2164	hv_store (hv, "desc", sizeof ("desc") - 1,
1754	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2165	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1755		2166
1756	invoke_av = (AV *)SvRV (invoke);	2167	invoke_av = (AV *)SvRV (invoke);
…		…
1760		2171
1761	if (len > 0)	2172	if (len > 0)
1762	{	2173	{
1763	av_fill (defav, len - 1);	2174	av_fill (defav, len - 1);
1764	for (i = 0; i < len; ++i)	2175	for (i = 0; i < len; ++i)
1765	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2176	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1766	}	2177	}
1767		2178
1768	SvREFCNT_dec (invoke);	2179	SvREFCNT_dec (invoke);
1769	}	2180	}
1770		2181
…		…
1774	{	2185	{
1775	struct coro *coro = SvSTATE (coro_current);	2186	struct coro *coro = SvSTATE (coro_current);
1776		2187
1777	sv_setsv (cb, &PL_sv_undef);	2188	sv_setsv (cb, &PL_sv_undef);
1778		2189
		2190	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2191	coro->saved_deffh = 0;
		2192
1779	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2193	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1780	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2194	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2195	{
		2196	SV *old = PL_diehook;
		2197	PL_diehook = 0;
		2198	SvREFCNT_dec (old);
1781	croak ("\3terminate\2\n");	2199	croak ("\3async_pool terminate\2\n");
		2200	}
1782		2201
1783	av_clear (GvAV (PL_defgv));	2202	av_clear (GvAV (PL_defgv));
1784	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2203	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1785	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2204	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1786		2205
1787	coro->save = CORO_SAVE_DEF;
1788	coro->prio = 0;	2206	coro->prio = 0;
1789		2207
1790	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2208	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1791	api_trace (coro_current, 0);	2209	api_trace (coro_current, 0);
1792		2210
1793	av_push (av_async_pool, newSVsv (coro_current));	2211	av_push (av_async_pool, newSVsv (coro_current));
1794	}	2212	}
1795		2213
		2214	#if 0
		2215
		2216	void
		2217	_generator_call (...)
		2218	PROTOTYPE: @
		2219	PPCODE:
		2220	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2221	xxxx
		2222	abort ();
		2223
		2224	SV *
		2225	gensub (SV *sub, ...)
		2226	PROTOTYPE: &;@
		2227	CODE:
		2228	{
		2229	struct coro *coro;
		2230	MAGIC *mg;
		2231	CV *xcv;
		2232	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2233	int i;
		2234
		2235	CvGV (ncv) = CvGV (cv);
		2236	CvFILE (ncv) = CvFILE (cv);
		2237
		2238	Newz (0, coro, 1, struct coro);
		2239	coro->args = newAV ();
		2240	coro->flags = CF_NEW;
		2241
		2242	av_extend (coro->args, items - 1);
		2243	for (i = 1; i < items; i++)
		2244	av_push (coro->args, newSVsv (ST (i)));
		2245
		2246	CvISXSUB_on (ncv);
		2247	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2248
		2249	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2250
		2251	CvXSUB (ncv) = CvXSUB (xcv);
		2252	CvANON_on (ncv);
		2253
		2254	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2255	RETVAL = newRV_noinc ((SV *)ncv);
		2256	}
		2257	OUTPUT:
		2258	RETVAL
		2259
		2260	#endif
		2261
1796		2262
1797	MODULE = Coro::State PACKAGE = Coro::AIO	2263	MODULE = Coro::State PACKAGE = Coro::AIO
1798		2264
1799	SV *	2265	void
1800	_get_state ()	2266	_get_state (SV *self)
1801	CODE:	2267	PPCODE:
1802	{	2268	{
1803	struct io_state *data;	2269	AV *defav = GvAV (PL_defgv);
1804		2270	AV *av = newAV ();
		2271	int i;
1805	RETVAL = newSV (sizeof (struct io_state));	2272	SV *data_sv = newSV (sizeof (struct io_state));
1806	data = (struct io_state *)SvPVX (RETVAL);	2273	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1807	SvCUR_set (RETVAL, sizeof (struct io_state));	2274	SvCUR_set (data_sv, sizeof (struct io_state));
1808	SvPOK_only (RETVAL);	2275	SvPOK_only (data_sv);
1809		2276
1810	data->errorno = errno;	2277	data->errorno = errno;
1811	data->laststype = PL_laststype;	2278	data->laststype = PL_laststype;
1812	data->laststatval = PL_laststatval;	2279	data->laststatval = PL_laststatval;
1813	data->statcache = PL_statcache;	2280	data->statcache = PL_statcache;
		2281
		2282	av_extend (av, AvFILLp (defav) + 1 + 1);
		2283
		2284	for (i = 0; i <= AvFILLp (defav); ++i)
		2285	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2286
		2287	av_push (av, data_sv);
		2288
		2289	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2290
		2291	api_ready (self);
1814	}	2292	}
1815	OUTPUT:
1816	RETVAL
1817		2293
1818	void	2294	void
1819	_set_state (char *data_)	2295	_set_state (SV *state)
1820	PROTOTYPE: $	2296	PROTOTYPE: $
1821	CODE:	2297	PPCODE:
1822	{	2298	{
1823	struct io_state *data = (void *)data_;	2299	AV *av = (AV *)SvRV (state);
		2300	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2301	int i;
1824		2302
1825	errno = data->errorno;	2303	errno = data->errorno;
1826	PL_laststype = data->laststype;	2304	PL_laststype = data->laststype;
1827	PL_laststatval = data->laststatval;	2305	PL_laststatval = data->laststatval;
1828	PL_statcache = data->statcache;	2306	PL_statcache = data->statcache;
1829	}
1830		2307
		2308	EXTEND (SP, AvFILLp (av));
		2309	for (i = 0; i < AvFILLp (av); ++i)
		2310	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2311	}
		2312
		2313
		2314	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2315
		2316	BOOT:
		2317	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2318
		2319	SV *
		2320	_schedule (...)
		2321	PROTOTYPE: @
		2322	CODE:
		2323	{
		2324	static int incede;
		2325
		2326	api_cede_notself ();
		2327
		2328	++incede;
		2329	while (coro_nready >= incede && api_cede ())
		2330	;
		2331
		2332	sv_setsv (sv_activity, &PL_sv_undef);
		2333	if (coro_nready >= incede)
		2334	{
		2335	PUSHMARK (SP);
		2336	PUTBACK;
		2337	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2338	SPAGAIN;
		2339	}
		2340
		2341	--incede;
		2342	}
		2343
		2344
		2345	MODULE = Coro::State PACKAGE = PerlIO::cede
		2346
		2347	BOOT:
		2348	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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