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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.176 by root, Sun Sep 30 13:50:38 2007 UTC vs.
Revision 1.254 by root, Fri Nov 7 20:27:47 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	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
		167	static U32 cctx_gen;
130	static size_t coro_stacksize = CORO_STACKSIZE;	168	static size_t cctx_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	169	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	170	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	171	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	172	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	173	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		174
		175	static GV *irsgv; /* $/ */
		176	static GV *stdoutgv; /* *STDOUT */
		177	static SV *rv_diehook;
		178	static SV *rv_warnhook;
		179	static HV *hv_sig; /* %SIG */
136		180
137	/* async_pool helper stuff */	181	/* async_pool helper stuff */
138	static SV *sv_pool_rss;	182	static SV *sv_pool_rss;
139	static SV *sv_pool_size;	183	static SV *sv_pool_size;
140	static AV *av_async_pool;	184	static AV *av_async_pool;
		185
		186	/* Coro::AnyEvent */
		187	static SV *sv_activity;
141		188
142	static struct coro_cctx *cctx_first;	189	static struct coro_cctx *cctx_first;
143	static int cctx_count, cctx_idle;	190	static int cctx_count, cctx_idle;
144		191
145	enum {	192	enum {
…		…
163	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	210	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	211	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165	JMPENV *top_env;	212	JMPENV *top_env;
166	coro_context cctx;	213	coro_context cctx;
167		214
		215	U32 gen;
168	#if CORO_USE_VALGRIND	216	#if CORO_USE_VALGRIND
169	int valgrind_id;	217	int valgrind_id;
170	#endif	218	#endif
171	unsigned char flags;	219	unsigned char flags;
172	} coro_cctx;	220	} coro_cctx;
…		…
176	CF_READY = 0x0002, /* coroutine is ready */	224	CF_READY = 0x0002, /* coroutine is ready */
177	CF_NEW = 0x0004, /* has never been switched to */	225	CF_NEW = 0x0004, /* has never been switched to */
178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	226	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179	};	227	};
180		228
		229	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		230	typedef struct {
		231	SV *defsv;
		232	AV *defav;
		233	SV *errsv;
		234	SV *irsgv;
		235	#define VAR(name,type) type name;
		236	# include "state.h"
		237	#undef VAR
		238	} perl_slots;
		239
		240	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		241
181	/* this is a structure representing a perl-level coroutine */	242	/* this is a structure representing a perl-level coroutine */
182	struct coro {	243	struct coro {
183	/* the c coroutine allocated to this perl coroutine, if any */	244	/* the c coroutine allocated to this perl coroutine, if any */
184	coro_cctx *cctx;	245	coro_cctx *cctx;
185		246
		247	/* process data */
		248	AV *mainstack;
		249	perl_slots *slot; /* basically the saved sp */
		250
186	/* data associated with this coroutine (initial args) */	251	AV *args; /* data associated with this coroutine (initial args) */
187	AV *args;	252	int refcnt; /* coroutines are refcounted, yes */
188	int refcnt;
189	int save; /* CORO_SAVE flags */
190	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
191		254	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		255
204	/* statistics */	256	/* statistics */
205	int usecount; /* number of switches to this coro */	257	int usecount; /* number of transfers to this coro */
206		258
207	/* coro process data */	259	/* coro process data */
208	int prio;	260	int prio;
		261	SV *throw; /* exception to be thrown */
		262
		263	/* async_pool */
		264	SV *saved_deffh;
209		265
210	/* linked list */	266	/* linked list */
211	struct coro *next, *prev;	267	struct coro *next, *prev;
212	HV *hv; /* the perl hash associated with this coro, if any */
213	};	268	};
214		269
215	typedef struct coro *Coro__State;	270	typedef struct coro *Coro__State;
216	typedef struct coro *Coro__State_or_hashref;	271	typedef struct coro *Coro__State_or_hashref;
217		272
…		…
224	#define PRIO_IDLE -3	279	#define PRIO_IDLE -3
225	#define PRIO_MIN -4	280	#define PRIO_MIN -4
226		281
227	/* for Coro.pm */	282	/* for Coro.pm */
228	static SV *coro_current;	283	static SV *coro_current;
		284	static SV *coro_readyhook;
229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	285	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
230	static int coro_nready;	286	static int coro_nready;
231	static struct coro *coro_first;	287	static struct coro *coro_first;
232		288
233	/** lowlevel stuff **********************************************************/	289	/** lowlevel stuff **********************************************************/
234		290
		291	static SV *
		292	coro_get_sv (pTHX_ const char *name, int create)
		293	{
		294	#if PERL_VERSION_ATLEAST (5,10,0)
		295	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		296	get_sv (name, create);
		297	#endif
		298	return get_sv (name, create);
		299	}
		300
		301	static AV *
		302	coro_get_av (pTHX_ const char *name, int create)
		303	{
		304	#if PERL_VERSION_ATLEAST (5,10,0)
		305	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		306	get_av (name, create);
		307	#endif
		308	return get_av (name, create);
		309	}
		310
		311	static HV *
		312	coro_get_hv (pTHX_ const char *name, int create)
		313	{
		314	#if PERL_VERSION_ATLEAST (5,10,0)
		315	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		316	get_hv (name, create);
		317	#endif
		318	return get_hv (name, create);
		319	}
		320
235	static AV *	321	static AV *
236	coro_clone_padlist (pTHX_ CV *cv)	322	coro_clone_padlist (pTHX_ CV *cv)
237	{	323	{
238	AV *padlist = CvPADLIST (cv);	324	AV *padlist = CvPADLIST (cv);
239	AV *newpadlist, *newpad;	325	AV *newpadlist, *newpad;
240		326
241	newpadlist = newAV ();	327	newpadlist = newAV ();
242	AvREAL_off (newpadlist);	328	AvREAL_off (newpadlist);
243	#if PERL_VERSION_ATLEAST (5,9,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
244	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	330	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
245	#else	331	#else
246	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	332	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
247	#endif	333	#endif
248	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	334	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
249	--AvFILLp (padlist);	335	--AvFILLp (padlist);
250		336
251	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	337	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
252	av_store (newpadlist, 1, (SV *)newpad);	338	av_store (newpadlist, 1, (SV *)newpad);
253		339
254	return newpadlist;	340	return newpadlist;
255	}	341	}
256		342
…		…
286		372
287	/* casting is fun. */	373	/* casting is fun. */
288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	374	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
289	free_padlist (aTHX_ padlist);	375	free_padlist (aTHX_ padlist);
290		376
291	SvREFCNT_dec (av);	377	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
292		378
293	return 0;	379	return 0;
294	}	380	}
295		381
296	#define PERL_MAGIC_coro PERL_MAGIC_ext	382	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		383	#define CORO_MAGIC_type_state PERL_MAGIC_ext
297		384
298	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	385	static MGVTBL coro_cv_vtbl = {
		386	0, 0, 0, 0,
		387	coro_cv_free
		388	};
299		389
300	#define CORO_MAGIC(cv) \	390	#define CORO_MAGIC(sv, type) \
301	SvMAGIC (cv) \	391	SvMAGIC (sv) \
302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	392	? SvMAGIC (sv)->mg_type == type \
303	? SvMAGIC (cv) \	393	? SvMAGIC (sv) \
304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	394	: mg_find (sv, type) \
305	: 0	395	: 0
		396
		397	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		398	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
306		399
307	static struct coro *	400	static struct coro *
308	SvSTATE_ (pTHX_ SV *coro)	401	SvSTATE_ (pTHX_ SV *coro)
309	{	402	{
310	HV *stash;	403	HV *stash;
311	MAGIC *mg;	404	MAGIC *mg;
312		405
313	if (SvROK (coro))	406	if (SvROK (coro))
314	coro = SvRV (coro);	407	coro = SvRV (coro);
315		408
316	if (SvTYPE (coro) != SVt_PVHV)	409	if (expect_false (SvTYPE (coro) != SVt_PVHV))
317	croak ("Coro::State object required");	410	croak ("Coro::State object required");
318		411
319	stash = SvSTASH (coro);	412	stash = SvSTASH (coro);
320	if (stash != coro_stash && stash != coro_state_stash)	413	if (expect_false (stash != coro_stash && stash != coro_state_stash))
321	{	414	{
322	/* very slow, but rare, check */	415	/* very slow, but rare, check */
323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	416	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
324	croak ("Coro::State object required");	417	croak ("Coro::State object required");
325	}	418	}
326		419
327	mg = CORO_MAGIC (coro);	420	mg = CORO_MAGIC_state (coro);
328	return (struct coro *)mg->mg_ptr;	421	return (struct coro *)mg->mg_ptr;
329	}	422	}
330		423
331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	424	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
332		425
333	/* the next two functions merely cache the padlists */	426	/* the next two functions merely cache the padlists */
334	static void	427	static void
335	get_padlist (pTHX_ CV *cv)	428	get_padlist (pTHX_ CV *cv)
336	{	429	{
337	MAGIC *mg = CORO_MAGIC (cv);	430	MAGIC *mg = CORO_MAGIC_cv (cv);
338	AV *av;	431	AV *av;
339		432
340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	433	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	434	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
342	else	435	else
343	{	436	{
344	#if CORO_PREFER_PERL_FUNCTIONS	437	#if CORO_PREFER_PERL_FUNCTIONS
345	/* this is probably cleaner, but also slower? */	438	/* this is probably cleaner? but also slower! */
		439	/* in practise, it seems to be less stable */
346	CV *cp = Perl_cv_clone (cv);	440	CV *cp = Perl_cv_clone (cv);
347	CvPADLIST (cv) = CvPADLIST (cp);	441	CvPADLIST (cv) = CvPADLIST (cp);
348	CvPADLIST (cp) = 0;	442	CvPADLIST (cp) = 0;
349	SvREFCNT_dec (cp);	443	SvREFCNT_dec (cp);
350	#else	444	#else
…		…
354	}	448	}
355		449
356	static void	450	static void
357	put_padlist (pTHX_ CV *cv)	451	put_padlist (pTHX_ CV *cv)
358	{	452	{
359	MAGIC *mg = CORO_MAGIC (cv);	453	MAGIC *mg = CORO_MAGIC_cv (cv);
360	AV *av;	454	AV *av;
361		455
362	if (!mg)	456	if (expect_false (!mg))
363	{	457	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		458
370	av = (AV *)mg->mg_obj;	459	av = (AV *)mg->mg_obj;
371		460
372	if (AvFILLp (av) >= AvMAX (av))	461	if (expect_false (AvFILLp (av) >= AvMAX (av)))
373	av_extend (av, AvMAX (av) + 1);	462	av_extend (av, AvMAX (av) + 1);
374		463
375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	464	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
376	}	465	}
377		466
378	/** load & save, init *******************************************************/	467	/** 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		468
385	static void	469	static void
386	load_perl (pTHX_ Coro__State c)	470	load_perl (pTHX_ Coro__State c)
387	{	471	{
		472	perl_slots *slot = c->slot;
		473	c->slot = 0;
		474
		475	PL_mainstack = c->mainstack;
		476
		477	GvSV (PL_defgv) = slot->defsv;
		478	GvAV (PL_defgv) = slot->defav;
		479	GvSV (PL_errgv) = slot->errsv;
		480	GvSV (irsgv) = slot->irsgv;
		481
388	#define VAR(name,type) PL_ ## name = c->name;	482	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	483	# include "state.h"
390	#undef VAR	484	#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		485
412	{	486	{
413	dSP;	487	dSP;
		488
414	CV *cv;	489	CV *cv;
415		490
416	/* now do the ugly restore mess */	491	/* now do the ugly restore mess */
417	while ((cv = (CV *)POPs))	492	while (expect_true (cv = (CV *)POPs))
418	{	493	{
419	put_padlist (aTHX_ cv); /* mark this padlist as available */	494	put_padlist (aTHX_ cv); /* mark this padlist as available */
420	CvDEPTH (cv) = PTR2IV (POPs);	495	CvDEPTH (cv) = PTR2IV (POPs);
421	CvPADLIST (cv) = (AV *)POPs;	496	CvPADLIST (cv) = (AV *)POPs;
422	}	497	}
…		…
441		516
442	XPUSHs (Nullsv);	517	XPUSHs (Nullsv);
443	/* this loop was inspired by pp_caller */	518	/* this loop was inspired by pp_caller */
444	for (;;)	519	for (;;)
445	{	520	{
446	while (cxix >= 0)	521	while (expect_true (cxix >= 0))
447	{	522	{
448	PERL_CONTEXT *cx = &ccstk[cxix--];	523	PERL_CONTEXT *cx = &ccstk[cxix--];
449		524
450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	525	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
451	{	526	{
452	CV *cv = cx->blk_sub.cv;	527	CV *cv = cx->blk_sub.cv;
453		528
454	if (CvDEPTH (cv))	529	if (expect_true (CvDEPTH (cv)))
455	{	530	{
456	EXTEND (SP, 3);	531	EXTEND (SP, 3);
457	PUSHs ((SV *)CvPADLIST (cv));	532	PUSHs ((SV *)CvPADLIST (cv));
458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	533	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
459	PUSHs ((SV *)cv);	534	PUSHs ((SV *)cv);
460		535
461	CvDEPTH (cv) = 0;	536	CvDEPTH (cv) = 0;
462	get_padlist (aTHX_ cv);	537	get_padlist (aTHX_ cv);
463	}	538	}
464	}	539	}
465	}	540	}
466		541
467	if (top_si->si_type == PERLSI_MAIN)	542	if (expect_true (top_si->si_type == PERLSI_MAIN))
468	break;	543	break;
469		544
470	top_si = top_si->si_prev;	545	top_si = top_si->si_prev;
471	ccstk = top_si->si_cxstack;	546	ccstk = top_si->si_cxstack;
472	cxix = top_si->si_cxix;	547	cxix = top_si->si_cxix;
473	}	548	}
474		549
475	PUTBACK;	550	PUTBACK;
476	}	551	}
477		552
478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	553	/* allocate some space on the context stack for our purposes */
479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	554	/* we manually unroll here, as usually 2 slots is enough */
480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	555	if (SLOT_COUNT >= 1) CXINC;
481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	556	if (SLOT_COUNT >= 2) CXINC;
482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	557	if (SLOT_COUNT >= 3) CXINC;
		558	{
		559	int i;
		560	for (i = 3; i < SLOT_COUNT; ++i)
		561	CXINC;
		562	}
		563	cxstack_ix -= SLOT_COUNT; /* undo allocation */
483		564
		565	c->mainstack = PL_mainstack;
		566
		567	{
		568	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		569
		570	slot->defav = GvAV (PL_defgv);
		571	slot->defsv = DEFSV;
		572	slot->errsv = ERRSV;
		573	slot->irsgv = GvSV (irsgv);
		574
484	#define VAR(name,type)c->name = PL_ ## name;	575	#define VAR(name,type) slot->name = PL_ ## name;
485	# include "state.h"	576	# include "state.h"
486	#undef VAR	577	#undef VAR
		578	}
487	}	579	}
488		580
489	/*	581	/*
490	* allocate various perl stacks. This is an exact copy	582	* allocate various perl stacks. This is an exact copy
491	* of perl.c:init_stacks, except that it uses less memory	583	* of perl.c:init_stacks, except that it uses less memory
…		…
496	# define coro_init_stacks init_stacks	588	# define coro_init_stacks init_stacks
497	#else	589	#else
498	static void	590	static void
499	coro_init_stacks (pTHX)	591	coro_init_stacks (pTHX)
500	{	592	{
501	PL_curstackinfo = new_stackinfo(64, 6);	593	PL_curstackinfo = new_stackinfo(32, 8);
502	PL_curstackinfo->si_type = PERLSI_MAIN;	594	PL_curstackinfo->si_type = PERLSI_MAIN;
503	PL_curstack = PL_curstackinfo->si_stack;	595	PL_curstack = PL_curstackinfo->si_stack;
504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	596	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
505		597
506	PL_stack_base = AvARRAY(PL_curstack);	598	PL_stack_base = AvARRAY(PL_curstack);
507	PL_stack_sp = PL_stack_base;	599	PL_stack_sp = PL_stack_base;
508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	600	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
509		601
510	New(50,PL_tmps_stack,64,SV*);	602	New(50,PL_tmps_stack,32,SV*);
511	PL_tmps_floor = -1;	603	PL_tmps_floor = -1;
512	PL_tmps_ix = -1;	604	PL_tmps_ix = -1;
513	PL_tmps_max = 64;	605	PL_tmps_max = 32;
514		606
515	New(54,PL_markstack,16,I32);	607	New(54,PL_markstack,16,I32);
516	PL_markstack_ptr = PL_markstack;	608	PL_markstack_ptr = PL_markstack;
517	PL_markstack_max = PL_markstack + 16;	609	PL_markstack_max = PL_markstack + 16;
518		610
519	#ifdef SET_MARK_OFFSET	611	#ifdef SET_MARK_OFFSET
520	SET_MARK_OFFSET;	612	SET_MARK_OFFSET;
521	#endif	613	#endif
522		614
523	New(54,PL_scopestack,16,I32);	615	New(54,PL_scopestack,8,I32);
524	PL_scopestack_ix = 0;	616	PL_scopestack_ix = 0;
525	PL_scopestack_max = 16;	617	PL_scopestack_max = 8;
526		618
527	New(54,PL_savestack,64,ANY);	619	New(54,PL_savestack,24,ANY);
528	PL_savestack_ix = 0;	620	PL_savestack_ix = 0;
529	PL_savestack_max = 64;	621	PL_savestack_max = 24;
530		622
531	#if !PERL_VERSION_ATLEAST (5,9,0)	623	#if !PERL_VERSION_ATLEAST (5,10,0)
532	New(54,PL_retstack,4,OP*);	624	New(54,PL_retstack,4,OP*);
533	PL_retstack_ix = 0;	625	PL_retstack_ix = 0;
534	PL_retstack_max = 4;	626	PL_retstack_max = 4;
535	#endif	627	#endif
536	}	628	}
…		…
538		630
539	/*	631	/*
540	* destroy the stacks, the callchain etc...	632	* destroy the stacks, the callchain etc...
541	*/	633	*/
542	static void	634	static void
543	coro_destroy_stacks (pTHX)	635	coro_destruct_stacks (pTHX)
544	{	636	{
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)	637	while (PL_curstackinfo->si_next)
563	PL_curstackinfo = PL_curstackinfo->si_next;	638	PL_curstackinfo = PL_curstackinfo->si_next;
564		639
565	while (PL_curstackinfo)	640	while (PL_curstackinfo)
566	{	641	{
…		…
576		651
577	Safefree (PL_tmps_stack);	652	Safefree (PL_tmps_stack);
578	Safefree (PL_markstack);	653	Safefree (PL_markstack);
579	Safefree (PL_scopestack);	654	Safefree (PL_scopestack);
580	Safefree (PL_savestack);	655	Safefree (PL_savestack);
581	#if !PERL_VERSION_ATLEAST (5,9,0)	656	#if !PERL_VERSION_ATLEAST (5,10,0)
582	Safefree (PL_retstack);	657	Safefree (PL_retstack);
583	#endif	658	#endif
584	}	659	}
585		660
586	static size_t	661	static size_t
587	coro_rss (pTHX_ struct coro *coro)	662	coro_rss (pTHX_ struct coro *coro)
588	{	663	{
589	size_t rss = sizeof (coro);	664	size_t rss = sizeof (*coro);
590		665
591	if (coro->mainstack)	666	if (coro->mainstack)
592	{	667	{
		668	perl_slots tmp_slot;
		669	perl_slots *slot;
		670
593	if (coro->flags & CF_RUNNING)	671	if (coro->flags & CF_RUNNING)
594	{	672	{
		673	slot = &tmp_slot;
		674
595	#define VAR(name,type)coro->name = PL_ ## name;	675	#define VAR(name,type) slot->name = PL_ ## name;
596	# include "state.h"	676	# include "state.h"
597	#undef VAR	677	#undef VAR
598	}	678	}
		679	else
		680	slot = coro->slot;
599		681
		682	if (slot)
		683	{
600	rss += sizeof (coro->curstackinfo);	684	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);	685	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	686	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
604	rss += coro->tmps_max * sizeof (SV *);	687	rss += slot->tmps_max * sizeof (SV *);
605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	688	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
606	rss += coro->scopestack_max * sizeof (I32);	689	rss += slot->scopestack_max * sizeof (I32);
607	rss += coro->savestack_max * sizeof (ANY);	690	rss += slot->savestack_max * sizeof (ANY);
608		691
609	#if !PERL_VERSION_ATLEAST (5,9,0)	692	#if !PERL_VERSION_ATLEAST (5,10,0)
610	rss += coro->retstack_max * sizeof (OP *);	693	rss += slot->retstack_max * sizeof (OP *);
611	#endif	694	#endif
		695	}
612	}	696	}
613		697
614	return rss;	698	return rss;
615	}	699	}
616		700
617	/** coroutine stack handling ************************************************/	701	/** coroutine stack handling ************************************************/
618		702
		703	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		704	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		705	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		706
		707	/* apparently < 5.8.8 */
		708	#ifndef MgPV_nolen_const
		709	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		710	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		711	(const char*)(mg)->mg_ptr)
		712	#endif
		713
		714	/*
		715	* This overrides the default magic get method of %SIG elements.
		716	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		717	* and instead of tryign to save and restore the hash elements, we just provide
		718	* readback here.
		719	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		720	* not expecting this to actually change the hook. This is a potential problem
		721	* when a schedule happens then, but we ignore this.
		722	*/
		723	static int
		724	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		725	{
		726	const char *s = MgPV_nolen_const (mg);
		727
		728	if (*s == '_')
		729	{
		730	SV **svp = 0;
		731
		732	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		733	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		734
		735	if (svp)
		736	{
		737	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		738	return 0;
		739	}
		740	}
		741
		742	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		743	}
		744
		745	static int
		746	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		747	{
		748	const char *s = MgPV_nolen_const (mg);
		749
		750	if (*s == '_')
		751	{
		752	SV **svp = 0;
		753
		754	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		755	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		756
		757	if (svp)
		758	{
		759	SV *old = *svp;
		760	*svp = 0;
		761	SvREFCNT_dec (old);
		762	return 0;
		763	}
		764	}
		765
		766	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		767	}
		768
		769	static int
		770	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		771	{
		772	const char *s = MgPV_nolen_const (mg);
		773
		774	if (*s == '_')
		775	{
		776	SV **svp = 0;
		777
		778	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		779	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		780
		781	if (svp)
		782	{
		783	SV *old = *svp;
		784	*svp = newSVsv (sv);
		785	SvREFCNT_dec (old);
		786	return 0;
		787	}
		788	}
		789
		790	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		791	}
		792
619	static void	793	static void
620	setup_coro (pTHX_ struct coro *coro)	794	coro_setup (pTHX_ struct coro *coro)
621	{	795	{
622	/*	796	/*
623	* emulate part of the perl startup here.	797	* emulate part of the perl startup here.
624	*/	798	*/
625	coro_init_stacks (aTHX);	799	coro_init_stacks (aTHX);
…		…
627	PL_runops = RUNOPS_DEFAULT;	801	PL_runops = RUNOPS_DEFAULT;
628	PL_curcop = &PL_compiling;	802	PL_curcop = &PL_compiling;
629	PL_in_eval = EVAL_NULL;	803	PL_in_eval = EVAL_NULL;
630	PL_comppad = 0;	804	PL_comppad = 0;
631	PL_curpm = 0;	805	PL_curpm = 0;
		806	PL_curpad = 0;
632	PL_localizing = 0;	807	PL_localizing = 0;
633	PL_dirty = 0;	808	PL_dirty = 0;
634	PL_restartop = 0;	809	PL_restartop = 0;
		810	#if PERL_VERSION_ATLEAST (5,10,0)
		811	PL_parser = 0;
		812	#endif
		813
		814	/* recreate the die/warn hooks */
		815	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		816	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
		817
		818	GvSV (PL_defgv) = newSV (0);
		819	GvAV (PL_defgv) = coro->args; coro->args = 0;
		820	GvSV (PL_errgv) = newSV (0);
		821	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		822	PL_rs = newSVsv (GvSV (irsgv));
		823	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
635		824
636	{	825	{
637	dSP;	826	dSP;
638	LOGOP myop;	827	LOGOP myop;
639		828
640	SvREFCNT_dec (GvAV (PL_defgv));
641	GvAV (PL_defgv) = coro->args; coro->args = 0;
642
643	Zero (&myop, 1, LOGOP);	829	Zero (&myop, 1, LOGOP);
644	myop.op_next = Nullop;	830	myop.op_next = Nullop;
645	myop.op_flags = OPf_WANT_VOID;	831	myop.op_flags = OPf_WANT_VOID;
646		832
647	PUSHMARK (SP);	833	PUSHMARK (SP);
648	XPUSHs (av_shift (GvAV (PL_defgv)));	834	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
649	PUTBACK;	835	PUTBACK;
650	PL_op = (OP *)&myop;	836	PL_op = (OP *)&myop;
651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	837	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
652	SPAGAIN;	838	SPAGAIN;
653	}	839	}
654		840
655	ENTER; /* necessary e.g. for dounwind */	841	/* this newly created coroutine might be run on an existing cctx which most
		842	* likely was suspended in set_stacklevel, called from entersub.
		843	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		844	* so we ENTER here for symmetry
		845	*/
		846	ENTER;
		847	}
		848
		849	static void
		850	coro_destruct (pTHX_ struct coro *coro)
		851	{
		852	if (!IN_DESTRUCT)
		853	{
		854	/* restore all saved variables and stuff */
		855	LEAVE_SCOPE (0);
		856	assert (PL_tmps_floor == -1);
		857
		858	/* free all temporaries */
		859	FREETMPS;
		860	assert (PL_tmps_ix == -1);
		861
		862	/* unwind all extra stacks */
		863	POPSTACK_TO (PL_mainstack);
		864
		865	/* unwind main stack */
		866	dounwind (-1);
		867	}
		868
		869	SvREFCNT_dec (GvSV (PL_defgv));
		870	SvREFCNT_dec (GvAV (PL_defgv));
		871	SvREFCNT_dec (GvSV (PL_errgv));
		872	SvREFCNT_dec (PL_defoutgv);
		873	SvREFCNT_dec (PL_rs);
		874	SvREFCNT_dec (GvSV (irsgv));
		875
		876	SvREFCNT_dec (PL_diehook);
		877	SvREFCNT_dec (PL_warnhook);
		878
		879	SvREFCNT_dec (coro->saved_deffh);
		880	SvREFCNT_dec (coro->throw);
		881
		882	coro_destruct_stacks (aTHX);
656	}	883	}
657		884
658	static void	885	static void
659	free_coro_mortal (pTHX)	886	free_coro_mortal (pTHX)
660	{	887	{
661	if (coro_mortal)	888	if (expect_true (coro_mortal))
662	{	889	{
663	SvREFCNT_dec (coro_mortal);	890	SvREFCNT_dec (coro_mortal);
664	coro_mortal = 0;	891	coro_mortal = 0;
665	}	892	}
666	}	893	}
…		…
695	bot = PL_stack_base + cx->blk_oldsp + 1;	922	bot = PL_stack_base + cx->blk_oldsp + 1;
696	top = cx->blk_gimme == G_ARRAY ? SP + 1	923	top = cx->blk_gimme == G_ARRAY ? SP + 1
697	: cx->blk_gimme == G_SCALAR ? bot + 1	924	: cx->blk_gimme == G_SCALAR ? bot + 1
698	: bot;	925	: bot;
699		926
		927	av_extend (av, top - bot);
700	while (bot < top)	928	while (bot < top)
701	av_push (av, SvREFCNT_inc (*bot++));	929	av_push (av, SvREFCNT_inc_NN (*bot++));
702		930
703	PL_runops = RUNOPS_DEFAULT;	931	PL_runops = RUNOPS_DEFAULT;
704	ENTER;	932	ENTER;
705	SAVETMPS;	933	SAVETMPS;
706	EXTEND (SP, 3);	934	EXTEND (SP, 3);
…		…
744	SAVETMPS;	972	SAVETMPS;
745	EXTEND (SP, 3);	973	EXTEND (SP, 3);
746	PUSHMARK (SP);	974	PUSHMARK (SP);
747	PUSHs (&PL_sv_yes);	975	PUSHs (&PL_sv_yes);
748	PUSHs (fullname);	976	PUSHs (fullname);
749	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	977	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
750	PUTBACK;	978	PUTBACK;
751	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	979	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);	980	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
753	SPAGAIN;	981	SPAGAIN;
754	FREETMPS;	982	FREETMPS;
…		…
790		1018
791	/* inject a fake call to Coro::State::_cctx_init into the execution */	1019	/* 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 */	1020	/* _cctx_init should be careful, as it could be called at almost any time */
793	/* during execution of a perl program */	1021	/* during execution of a perl program */
794	static void NOINLINE	1022	static void NOINLINE
795	prepare_cctx (pTHX_ coro_cctx *cctx)	1023	cctx_prepare (pTHX_ coro_cctx *cctx)
796	{	1024	{
797	dSP;	1025	dSP;
798	LOGOP myop;	1026	LOGOP myop;
799		1027
800	PL_top_env = &PL_start_env;	1028	PL_top_env = &PL_start_env;
…		…
818		1046
819	/*	1047	/*
820	* this is a _very_ stripped down perl interpreter ;)	1048	* this is a _very_ stripped down perl interpreter ;)
821	*/	1049	*/
822	static void	1050	static void
823	coro_run (void *arg)	1051	cctx_run (void *arg)
824	{	1052	{
825	dTHX;	1053	dTHX;
826		1054
827	/* coro_run is the alternative tail of transfer(), so unlock here. */	1055	/* cctx_run is the alternative tail of transfer(), so unlock here. */
828	UNLOCK;	1056	UNLOCK;
829		1057
830	/* we now skip the entersub that lead to transfer() */	1058	/* we now skip the entersub that lead to transfer() */
831	PL_op = PL_op->op_next;	1059	PL_op = PL_op->op_next;
832		1060
833	/* inject a fake subroutine call to cctx_init */	1061	/* inject a fake subroutine call to cctx_init */
834	prepare_cctx (aTHX_ (coro_cctx *)arg);	1062	cctx_prepare (aTHX_ (coro_cctx *)arg);
835		1063
836	/* somebody or something will hit me for both perl_run and PL_restartop */	1064	/* somebody or something will hit me for both perl_run and PL_restartop */
837	PL_restartop = PL_op;	1065	PL_restartop = PL_op;
838	perl_run (PL_curinterp);	1066	perl_run (PL_curinterp);
839		1067
…		…
854	coro_cctx *cctx;	1082	coro_cctx *cctx;
855	void *stack_start;	1083	void *stack_start;
856	size_t stack_size;	1084	size_t stack_size;
857		1085
858	++cctx_count;	1086	++cctx_count;
859
860	Newz (0, cctx, 1, coro_cctx);	1087	Newz (0, cctx, 1, coro_cctx);
861		1088
		1089	cctx->gen = cctx_gen;
		1090
862	#if HAVE_MMAP	1091	#if HAVE_MMAP
863
864	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1092	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
865	/* mmap supposedly does allocate-on-write for us */	1093	/* 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);	1094	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
867		1095
868	if (cctx->sptr != (void *)-1)	1096	if (cctx->sptr != (void *)-1)
869	{	1097	{
…		…
875	cctx->flags |= CC_MAPPED;	1103	cctx->flags |= CC_MAPPED;
876	}	1104	}
877	else	1105	else
878	#endif	1106	#endif
879	{	1107	{
880	cctx->ssize = coro_stacksize * (long)sizeof (long);	1108	cctx->ssize = cctx_stacksize * (long)sizeof (long);
881	New (0, cctx->sptr, coro_stacksize, long);	1109	New (0, cctx->sptr, cctx_stacksize, long);
882		1110
883	if (!cctx->sptr)	1111	if (!cctx->sptr)
884	{	1112	{
885	perror ("FATAL: unable to allocate stack for coroutine");	1113	perror ("FATAL: unable to allocate stack for coroutine");
886	_exit (EXIT_FAILURE);	1114	_exit (EXIT_FAILURE);
…		…
889	stack_start = cctx->sptr;	1117	stack_start = cctx->sptr;
890	stack_size = cctx->ssize;	1118	stack_size = cctx->ssize;
891	}	1119	}
892		1120
893	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1121	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
894	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1122	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
895		1123
896	return cctx;	1124	return cctx;
897	}	1125	}
898		1126
899	static void	1127	static void
…		…
901	{	1129	{
902	if (!cctx)	1130	if (!cctx)
903	return;	1131	return;
904		1132
905	--cctx_count;	1133	--cctx_count;
		1134	coro_destroy (&cctx->cctx);
906		1135
		1136	/* coro_transfer creates new, empty cctx's */
		1137	if (cctx->sptr)
		1138	{
907	#if CORO_USE_VALGRIND	1139	#if CORO_USE_VALGRIND
908	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1140	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
909	#endif	1141	#endif
910		1142
911	#if HAVE_MMAP	1143	#if HAVE_MMAP
912	if (cctx->flags & CC_MAPPED)	1144	if (cctx->flags & CC_MAPPED)
913	munmap (cctx->sptr, cctx->ssize);	1145	munmap (cctx->sptr, cctx->ssize);
914	else	1146	else
915	#endif	1147	#endif
916	Safefree (cctx->sptr);	1148	Safefree (cctx->sptr);
		1149	}
917		1150
918	Safefree (cctx);	1151	Safefree (cctx);
919	}	1152	}
		1153
		1154	/* wether this cctx should be destructed */
		1155	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
920		1156
921	static coro_cctx *	1157	static coro_cctx *
922	cctx_get (pTHX)	1158	cctx_get (pTHX)
923	{	1159	{
924	while (cctx_first)	1160	while (expect_true (cctx_first))
925	{	1161	{
926	coro_cctx *cctx = cctx_first;	1162	coro_cctx *cctx = cctx_first;
927	cctx_first = cctx->next;	1163	cctx_first = cctx->next;
928	--cctx_idle;	1164	--cctx_idle;
929		1165
930	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1166	if (expect_true (!CCTX_EXPIRED (cctx)))
931	return cctx;	1167	return cctx;
932		1168
933	cctx_destroy (cctx);	1169	cctx_destroy (cctx);
934	}	1170	}
935		1171
…		…
937	}	1173	}
938		1174
939	static void	1175	static void
940	cctx_put (coro_cctx *cctx)	1176	cctx_put (coro_cctx *cctx)
941	{	1177	{
		1178	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1179
942	/* free another cctx if overlimit */	1180	/* free another cctx if overlimit */
943	if (cctx_idle >= MAX_IDLE_CCTX)	1181	if (expect_false (cctx_idle >= cctx_max_idle))
944	{	1182	{
945	coro_cctx *first = cctx_first;	1183	coro_cctx *first = cctx_first;
946	cctx_first = first->next;	1184	cctx_first = first->next;
947	--cctx_idle;	1185	--cctx_idle;
948		1186
…		…
954	cctx_first = cctx;	1192	cctx_first = cctx;
955	}	1193	}
956		1194
957	/** coroutine switching *****************************************************/	1195	/** coroutine switching *****************************************************/
958		1196
959	static void NOINLINE	1197	static void
960	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1198	transfer_check (pTHX_ struct coro *prev, struct coro *next)
961	{	1199	{
962	if (prev != next)	1200	if (expect_true (prev != next))
963	{	1201	{
964	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1202	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");	1203	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
966		1204
967	if (next->flags & CF_RUNNING)	1205	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");	1206	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
969		1207
970	if (next->flags & CF_DESTROYED)	1208	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");	1209	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
972		1210
		1211	#if !PERL_VERSION_ATLEAST (5,10,0)
973	if (PL_lex_state != LEX_NOTPARSING)	1212	if (expect_false (PL_lex_state != LEX_NOTPARSING))
974	croak ("Coro::State::transfer called while parsing, but this is not supported");	1213	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1214	#endif
975	}	1215	}
976	}	1216	}
977		1217
978	/* always use the TRANSFER macro */	1218	/* always use the TRANSFER macro */
979	static void NOINLINE	1219	static void NOINLINE
980	transfer (pTHX_ struct coro *prev, struct coro *next)	1220	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
981	{	1221	{
982	dSTACKLEVEL;	1222	dSTACKLEVEL;
983		1223
984	/* sometimes transfer is only called to set idle_sp */	1224	/* sometimes transfer is only called to set idle_sp */
985	if (!next)	1225	if (expect_false (!next))
986	{	1226	{
987	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1227	((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 */	1228	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
989	}	1229	}
990	else if (prev != next)	1230	else if (expect_true (prev != next))
991	{	1231	{
		1232	static volatile int has_throw;
992	coro_cctx *prev__cctx;	1233	coro_cctx *prev__cctx;
993		1234
994	if (prev->flags & CF_NEW)	1235	if (expect_false (prev->flags & CF_NEW))
995	{	1236	{
996	/* create a new empty context */	1237	/* create a new empty/source context */
		1238	++cctx_count;
997	Newz (0, prev->cctx, 1, coro_cctx);	1239	New (0, prev->cctx, 1, coro_cctx);
		1240	prev->cctx->sptr = 0;
		1241	coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
		1242
998	prev->flags &= ~CF_NEW;	1243	prev->flags &= ~CF_NEW;
999	prev->flags |= CF_RUNNING;	1244	prev->flags |= CF_RUNNING;
1000	}	1245	}
1001		1246
1002	prev->flags &= ~CF_RUNNING;	1247	prev->flags &= ~CF_RUNNING;
1003	next->flags |= CF_RUNNING;	1248	next->flags |= CF_RUNNING;
1004		1249
1005	LOCK;	1250	LOCK;
1006		1251
		1252	/* first get rid of the old state */
		1253	save_perl (aTHX_ prev);
		1254
1007	if (next->flags & CF_NEW)	1255	if (expect_false (next->flags & CF_NEW))
1008	{	1256	{
1009	/* need to start coroutine */	1257	/* need to start coroutine */
1010	next->flags &= ~CF_NEW;	1258	next->flags &= ~CF_NEW;
1011	/* first get rid of the old state */
1012	save_perl (aTHX_ prev);
1013	/* setup coroutine call */	1259	/* setup coroutine call */
1014	setup_coro (aTHX_ next);	1260	coro_setup (aTHX_ next);
1015	}	1261	}
1016	else	1262	else
1017	{
1018	/* coroutine already started */
1019	save_perl (aTHX_ prev);
1020	load_perl (aTHX_ next);	1263	load_perl (aTHX_ next);
1021	}
1022		1264
1023	prev__cctx = prev->cctx;	1265	prev__cctx = prev->cctx;
1024		1266
1025	/* possibly "free" the cctx */	1267	/* possibly "free" the cctx */
1026	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1268	if (expect_true (
		1269	prev__cctx->idle_sp == STACKLEVEL
		1270	&& !(prev__cctx->flags & CC_TRACE)
		1271	&& !force_cctx
		1272	))
1027	{	1273	{
1028	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1274	/* 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));	1275	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1030		1276
1031	prev->cctx = 0;	1277	prev->cctx = 0;
1032		1278
		1279	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1280	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1281	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1282	if (!next->cctx)
		1283	next->cctx = cctx_get (aTHX);
		1284
1033	cctx_put (prev__cctx);	1285	cctx_put (prev__cctx);
1034	}	1286	}
1035		1287
1036	++next->usecount;	1288	++next->usecount;
1037		1289
1038	if (!next->cctx)	1290	if (expect_true (!next->cctx))
1039	next->cctx = cctx_get (aTHX);	1291	next->cctx = cctx_get (aTHX);
1040		1292
		1293	has_throw = !!next->throw;
		1294
1041	if (prev__cctx != next->cctx)	1295	if (expect_false (prev__cctx != next->cctx))
1042	{	1296	{
1043	prev__cctx->top_env = PL_top_env;	1297	prev__cctx->top_env = PL_top_env;
1044	PL_top_env = next->cctx->top_env;	1298	PL_top_env = next->cctx->top_env;
1045	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1299	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1046	}	1300	}
1047		1301
1048	free_coro_mortal (aTHX);	1302	free_coro_mortal (aTHX);
1049	UNLOCK;	1303	UNLOCK;
		1304
		1305	if (expect_false (has_throw))
		1306	{
		1307	struct coro *coro = SvSTATE (coro_current);
		1308
		1309	if (coro->throw)
		1310	{
		1311	SV *exception = coro->throw;
		1312	coro->throw = 0;
		1313	sv_setsv (ERRSV, exception);
		1314	croak (0);
		1315	}
		1316	}
1050	}	1317	}
1051	}	1318	}
1052		1319
1053	struct transfer_args	1320	struct transfer_args
1054	{	1321	{
1055	struct coro *prev, *next;	1322	struct coro *prev, *next;
1056	};	1323	};
1057		1324
1058	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1325	#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)	1326	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1060		1327
1061	/** high level stuff ********************************************************/	1328	/** high level stuff ********************************************************/
1062		1329
1063	static int	1330	static int
…		…
1081		1348
1082	if (coro->mainstack && coro->mainstack != main_mainstack)	1349	if (coro->mainstack && coro->mainstack != main_mainstack)
1083	{	1350	{
1084	struct coro temp;	1351	struct coro temp;
1085		1352
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)	1353	if (coro->flags & CF_RUNNING)
1092	croak ("FATAL: tried to destroy currently running coroutine");	1354	croak ("FATAL: tried to destroy currently running coroutine");
1093		1355
1094	save_perl (aTHX_ &temp);	1356	save_perl (aTHX_ &temp);
1095	load_perl (aTHX_ coro);	1357	load_perl (aTHX_ coro);
1096		1358
1097	coro_destroy_stacks (aTHX);	1359	coro_destruct (aTHX_ coro);
1098		1360
1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1361	load_perl (aTHX_ &temp);
1100		1362
1101	coro->mainstack = 0;	1363	coro->slot = 0;
1102	}	1364	}
1103		1365
1104	cctx_destroy (coro->cctx);	1366	cctx_destroy (coro->cctx);
1105	SvREFCNT_dec (coro->args);	1367	SvREFCNT_dec (coro->args);
1106		1368
…		…
1162	{	1424	{
1163	dTHX;	1425	dTHX;
1164	struct transfer_args ta;	1426	struct transfer_args ta;
1165		1427
1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1428	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1167	TRANSFER (ta);	1429	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	}	1430	}
1182		1431
1183	/** Coro ********************************************************************/	1432	/** Coro ********************************************************************/
1184		1433
1185	static void	1434	static void
…		…
1187	{	1436	{
1188	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1437	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1189	}	1438	}
1190		1439
1191	static SV *	1440	static SV *
1192	coro_deq (pTHX_ int min_prio)	1441	coro_deq (pTHX)
1193	{	1442	{
1194	int prio = PRIO_MAX - PRIO_MIN;	1443	int prio;
1195		1444
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; )	1445	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1201	if (AvFILLp (coro_ready [prio]) >= 0)	1446	if (AvFILLp (coro_ready [prio]) >= 0)
1202	return av_shift (coro_ready [prio]);	1447	return av_shift (coro_ready [prio]);
1203		1448
1204	return 0;	1449	return 0;
1205	}	1450	}
…		…
1207	static int	1452	static int
1208	api_ready (SV *coro_sv)	1453	api_ready (SV *coro_sv)
1209	{	1454	{
1210	dTHX;	1455	dTHX;
1211	struct coro *coro;	1456	struct coro *coro;
		1457	SV *sv_hook;
		1458	void (*xs_hook)(void);
1212		1459
1213	if (SvROK (coro_sv))	1460	if (SvROK (coro_sv))
1214	coro_sv = SvRV (coro_sv);	1461	coro_sv = SvRV (coro_sv);
1215		1462
1216	coro = SvSTATE (coro_sv);	1463	coro = SvSTATE (coro_sv);
…		…
1219	return 0;	1466	return 0;
1220		1467
1221	coro->flags |= CF_READY;	1468	coro->flags |= CF_READY;
1222		1469
1223	LOCK;	1470	LOCK;
		1471
		1472	sv_hook = coro_nready ? 0 : coro_readyhook;
		1473	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1474
1224	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1475	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1225	++coro_nready;	1476	++coro_nready;
		1477
1226	UNLOCK;	1478	UNLOCK;
		1479
		1480	if (sv_hook)
		1481	{
		1482	dSP;
		1483
		1484	ENTER;
		1485	SAVETMPS;
		1486
		1487	PUSHMARK (SP);
		1488	PUTBACK;
		1489	call_sv (sv_hook, G_DISCARD);
		1490	SPAGAIN;
		1491
		1492	FREETMPS;
		1493	LEAVE;
		1494	}
		1495
		1496	if (xs_hook)
		1497	xs_hook ();
1227		1498
1228	return 1;	1499	return 1;
1229	}	1500	}
1230		1501
1231	static int	1502	static int
…		…
1241	SV *prev_sv, *next_sv;	1512	SV *prev_sv, *next_sv;
1242		1513
1243	for (;;)	1514	for (;;)
1244	{	1515	{
1245	LOCK;	1516	LOCK;
1246	next_sv = coro_deq (aTHX_ PRIO_MIN);	1517	next_sv = coro_deq (aTHX);
1247		1518
1248	/* nothing to schedule: call the idle handler */	1519	/* nothing to schedule: call the idle handler */
1249	if (!next_sv)	1520	if (expect_false (!next_sv))
1250	{	1521	{
1251	dSP;	1522	dSP;
1252	UNLOCK;	1523	UNLOCK;
1253		1524
1254	ENTER;	1525	ENTER;
1255	SAVETMPS;	1526	SAVETMPS;
1256		1527
1257	PUSHMARK (SP);	1528	PUSHMARK (SP);
1258	PUTBACK;	1529	PUTBACK;
1259	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1530	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1531	SPAGAIN;
1260		1532
1261	FREETMPS;	1533	FREETMPS;
1262	LEAVE;	1534	LEAVE;
1263	continue;	1535	continue;
1264	}	1536	}
1265		1537
1266	ta->next = SvSTATE (next_sv);	1538	ta->next = SvSTATE (next_sv);
1267		1539
1268	/* cannot transfer to destroyed coros, skip and look for next */	1540	/* cannot transfer to destroyed coros, skip and look for next */
1269	if (ta->next->flags & CF_DESTROYED)	1541	if (expect_false (ta->next->flags & CF_DESTROYED))
1270	{	1542	{
1271	UNLOCK;	1543	UNLOCK;
1272	SvREFCNT_dec (next_sv);	1544	SvREFCNT_dec (next_sv);
1273	/* coro_nready is already taken care of by destroy */	1545	/* coro_nready is already taken care of by destroy */
1274	continue;	1546	continue;
…		…
1319	{	1591	{
1320	dTHX;	1592	dTHX;
1321	struct transfer_args ta;	1593	struct transfer_args ta;
1322		1594
1323	prepare_schedule (aTHX_ &ta);	1595	prepare_schedule (aTHX_ &ta);
1324	TRANSFER (ta);	1596	TRANSFER (ta, 1);
1325	}	1597	}
1326		1598
1327	static int	1599	static int
1328	api_cede (void)	1600	api_cede (void)
1329	{	1601	{
1330	dTHX;	1602	dTHX;
1331	struct transfer_args ta;	1603	struct transfer_args ta;
1332		1604
1333	prepare_cede (aTHX_ &ta);	1605	prepare_cede (aTHX_ &ta);
1334		1606
1335	if (ta.prev != ta.next)	1607	if (expect_true (ta.prev != ta.next))
1336	{	1608	{
1337	TRANSFER (ta);	1609	TRANSFER (ta, 1);
1338	return 1;	1610	return 1;
1339	}	1611	}
1340	else	1612	else
1341	return 0;	1613	return 0;
1342	}	1614	}
…		…
1347	dTHX;	1619	dTHX;
1348	struct transfer_args ta;	1620	struct transfer_args ta;
1349		1621
1350	if (prepare_cede_notself (aTHX_ &ta))	1622	if (prepare_cede_notself (aTHX_ &ta))
1351	{	1623	{
1352	TRANSFER (ta);	1624	TRANSFER (ta, 1);
1353	return 1;	1625	return 1;
1354	}	1626	}
1355	else	1627	else
1356	return 0;	1628	return 0;
1357	}	1629	}
…		…
1376	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1648	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1377		1649
1378	if (coro->flags & CF_RUNNING)	1650	if (coro->flags & CF_RUNNING)
1379	PL_runops = RUNOPS_DEFAULT;	1651	PL_runops = RUNOPS_DEFAULT;
1380	else	1652	else
1381	coro->runops = RUNOPS_DEFAULT;	1653	coro->slot->runops = RUNOPS_DEFAULT;
		1654	}
		1655	}
		1656
		1657	static int
		1658	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1659	{
		1660	AV *padlist;
		1661	AV *av = (AV *)mg->mg_obj;
		1662
		1663	abort ();
		1664
		1665	return 0;
		1666	}
		1667
		1668	static MGVTBL coro_gensub_vtbl = {
		1669	0, 0, 0, 0,
		1670	coro_gensub_free
		1671	};
		1672
		1673	/*****************************************************************************/
		1674	/* PerlIO::cede */
		1675
		1676	typedef struct
		1677	{
		1678	PerlIOBuf base;
		1679	NV next, every;
		1680	} PerlIOCede;
		1681
		1682	static IV
		1683	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1684	{
		1685	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1686
		1687	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1688	self->next = nvtime () + self->every;
		1689
		1690	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1691	}
		1692
		1693	static SV *
		1694	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1695	{
		1696	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1697
		1698	return newSVnv (self->every);
		1699	}
		1700
		1701	static IV
		1702	PerlIOCede_flush (pTHX_ PerlIO *f)
		1703	{
		1704	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1705	double now = nvtime ();
		1706
		1707	if (now >= self->next)
1382	}	1708	{
		1709	api_cede ();
		1710	self->next = now + self->every;
		1711	}
		1712
		1713	return PerlIOBuf_flush (aTHX_ f);
1383	}	1714	}
		1715
		1716	static PerlIO_funcs PerlIO_cede =
		1717	{
		1718	sizeof(PerlIO_funcs),
		1719	"cede",
		1720	sizeof(PerlIOCede),
		1721	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1722	PerlIOCede_pushed,
		1723	PerlIOBuf_popped,
		1724	PerlIOBuf_open,
		1725	PerlIOBase_binmode,
		1726	PerlIOCede_getarg,
		1727	PerlIOBase_fileno,
		1728	PerlIOBuf_dup,
		1729	PerlIOBuf_read,
		1730	PerlIOBuf_unread,
		1731	PerlIOBuf_write,
		1732	PerlIOBuf_seek,
		1733	PerlIOBuf_tell,
		1734	PerlIOBuf_close,
		1735	PerlIOCede_flush,
		1736	PerlIOBuf_fill,
		1737	PerlIOBase_eof,
		1738	PerlIOBase_error,
		1739	PerlIOBase_clearerr,
		1740	PerlIOBase_setlinebuf,
		1741	PerlIOBuf_get_base,
		1742	PerlIOBuf_bufsiz,
		1743	PerlIOBuf_get_ptr,
		1744	PerlIOBuf_get_cnt,
		1745	PerlIOBuf_set_ptrcnt,
		1746	};
		1747
1384		1748
1385	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1749	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1386		1750
1387	PROTOTYPES: DISABLE	1751	PROTOTYPES: DISABLE
1388		1752
1389	BOOT:	1753	BOOT:
1390	{	1754	{
1391	#ifdef USE_ITHREADS	1755	#ifdef USE_ITHREADS
1392	MUTEX_INIT (&coro_mutex);	1756	MUTEX_INIT (&coro_lock);
1393	#endif	1757	#endif
1394	BOOT_PAGESIZE;	1758	BOOT_PAGESIZE;
		1759
		1760	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1761	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1762
		1763	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1764	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1765	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1766
		1767	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1768	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1769	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1770
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1771	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1772
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1773	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1774	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1400	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));	1775	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));	1776	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1402		1777
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;	1778	main_mainstack = PL_mainstack;
1412	main_top_env = PL_top_env;	1779	main_top_env = PL_top_env;
1413		1780
1414	while (main_top_env->je_prev)	1781	while (main_top_env->je_prev)
1415	main_top_env = main_top_env->je_prev;	1782	main_top_env = main_top_env->je_prev;
1416		1783
1417	coroapi.ver = CORO_API_VERSION;	1784	coroapi.ver = CORO_API_VERSION;
		1785	coroapi.rev = CORO_API_REVISION;
1418	coroapi.transfer = api_transfer;	1786	coroapi.transfer = api_transfer;
		1787
		1788	{
		1789	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1790
		1791	if (!svp) croak ("Time::HiRes is required");
		1792	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1793
		1794	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1795	}
1419		1796
1420	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1797	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1421	}	1798	}
1422		1799
1423	SV *	1800	SV *
1424	new (char *klass, ...)	1801	new (char *klass, ...)
1425	CODE:	1802	CODE:
1426	{	1803	{
1427	struct coro *coro;	1804	struct coro *coro;
		1805	MAGIC *mg;
1428	HV *hv;	1806	HV *hv;
1429	int i;	1807	int i;
1430		1808
1431	Newz (0, coro, 1, struct coro);	1809	Newz (0, coro, 1, struct coro);
1432	coro->args = newAV ();	1810	coro->args = newAV ();
1433	coro->save = CORO_SAVE_DEF;
1434	coro->flags = CF_NEW;	1811	coro->flags = CF_NEW;
1435		1812
1436	if (coro_first) coro_first->prev = coro;	1813	if (coro_first) coro_first->prev = coro;
1437	coro->next = coro_first;	1814	coro->next = coro_first;
1438	coro_first = coro;	1815	coro_first = coro;
1439		1816
1440	coro->hv = hv = newHV ();	1817	coro->hv = hv = newHV ();
1441	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1818	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1819	mg->mg_flags |= MGf_DUP;
1442	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1820	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1443		1821
		1822	av_extend (coro->args, items - 1);
1444	for (i = 1; i < items; i++)	1823	for (i = 1; i < items; i++)
1445	av_push (coro->args, newSVsv (ST (i)));	1824	av_push (coro->args, newSVsv (ST (i)));
1446	}	1825	}
1447	OUTPUT:	1826	OUTPUT:
1448	RETVAL
1449
1450	int
1451	save (SV *coro, int new_save = -1)
1452	CODE:
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	1827	RETVAL
1467		1828
1468	# these not obviously related functions are all rolled into the same xs	1829	# these not obviously related functions are all rolled into the same xs
1469	# function to increase chances that they all will call transfer with the same	1830	# function to increase chances that they all will call transfer with the same
1470	# stack offset	1831	# stack offset
…		…
1477	Coro::cede_notself = 4	1838	Coro::cede_notself = 4
1478	CODE:	1839	CODE:
1479	{	1840	{
1480	struct transfer_args ta;	1841	struct transfer_args ta;
1481		1842
		1843	PUTBACK;
1482	switch (ix)	1844	switch (ix)
1483	{	1845	{
1484	case 0:	1846	case 0:
1485	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1847	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1486	ta.next = 0;	1848	ta.next = 0;
1487	break;	1849	break;
1488		1850
1489	case 1:	1851	case 1:
1490	if (items != 2)	1852	if (items != 2)
1491	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1853	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1492		1854
1493	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1855	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1494	break;	1856	break;
1495		1857
1496	case 2:	1858	case 2:
…		…
1505	if (!prepare_cede_notself (aTHX_ &ta))	1867	if (!prepare_cede_notself (aTHX_ &ta))
1506	XSRETURN_EMPTY;	1868	XSRETURN_EMPTY;
1507		1869
1508	break;	1870	break;
1509	}	1871	}
		1872	SPAGAIN;
1510		1873
1511	BARRIER;	1874	BARRIER;
		1875	PUTBACK;
1512	TRANSFER (ta);	1876	TRANSFER (ta, 0);
1513		1877	SPAGAIN; /* might be the sp of a different coroutine now */
1514	if (GIMME_V != G_VOID && ta.next != ta.prev)	1878	/* be extra careful not to ever do anything after TRANSFER */
1515	XSRETURN_YES;
1516	}	1879	}
1517		1880
1518	bool	1881	bool
1519	_destroy (SV *coro_sv)	1882	_destroy (SV *coro_sv)
1520	CODE:	1883	CODE:
1521	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1884	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1522	OUTPUT:	1885	OUTPUT:
1523	RETVAL	1886	RETVAL
1524		1887
1525	void	1888	void
1526	_exit (code)	1889	_exit (int code)
1527	int code
1528	PROTOTYPE: $	1890	PROTOTYPE: $
1529	CODE:	1891	CODE:
1530	_exit (code);	1892	_exit (code);
1531		1893
1532	int	1894	int
1533	cctx_stacksize (int new_stacksize = 0)	1895	cctx_stacksize (int new_stacksize = 0)
1534	CODE:	1896	CODE:
1535	RETVAL = coro_stacksize;	1897	RETVAL = cctx_stacksize;
1536	if (new_stacksize)	1898	if (new_stacksize)
		1899	{
1537	coro_stacksize = new_stacksize;	1900	cctx_stacksize = new_stacksize;
		1901	++cctx_gen;
		1902	}
		1903	OUTPUT:
		1904	RETVAL
		1905
		1906	int
		1907	cctx_max_idle (int max_idle = 0)
		1908	CODE:
		1909	RETVAL = cctx_max_idle;
		1910	if (max_idle > 1)
		1911	cctx_max_idle = max_idle;
1538	OUTPUT:	1912	OUTPUT:
1539	RETVAL	1913	RETVAL
1540		1914
1541	int	1915	int
1542	cctx_count ()	1916	cctx_count ()
…		…
1566	call (Coro::State coro, SV *coderef)	1940	call (Coro::State coro, SV *coderef)
1567	ALIAS:	1941	ALIAS:
1568	eval = 1	1942	eval = 1
1569	CODE:	1943	CODE:
1570	{	1944	{
1571	if (coro->mainstack)	1945	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1572	{	1946	{
1573	struct coro temp;	1947	struct coro temp;
1574	Zero (&temp, 1, struct coro);
1575	temp.save = CORO_SAVE_ALL;
1576		1948
1577	if (!(coro->flags & CF_RUNNING))	1949	if (!(coro->flags & CF_RUNNING))
1578	{	1950	{
		1951	PUTBACK;
1579	save_perl (aTHX_ &temp);	1952	save_perl (aTHX_ &temp);
1580	load_perl (aTHX_ coro);	1953	load_perl (aTHX_ coro);
1581	}	1954	}
1582		1955
1583	{	1956	{
1584	dSP;	1957	dSP;
1585	ENTER;	1958	ENTER;
1586	SAVETMPS;	1959	SAVETMPS;
		1960	PUTBACK;
		1961	PUSHSTACK;
1587	PUSHMARK (SP);	1962	PUSHMARK (SP);
1588	PUTBACK;	1963
1589	if (ix)	1964	if (ix)
1590	eval_sv (coderef, 0);	1965	eval_sv (coderef, 0);
1591	else	1966	else
1592	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1967	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1968
		1969	POPSTACK;
1593	SPAGAIN;	1970	SPAGAIN;
1594	FREETMPS;	1971	FREETMPS;
1595	LEAVE;	1972	LEAVE;
1596	PUTBACK;	1973	PUTBACK;
1597	}	1974	}
1598		1975
1599	if (!(coro->flags & CF_RUNNING))	1976	if (!(coro->flags & CF_RUNNING))
1600	{	1977	{
1601	save_perl (aTHX_ coro);	1978	save_perl (aTHX_ coro);
1602	load_perl (aTHX_ &temp);	1979	load_perl (aTHX_ &temp);
		1980	SPAGAIN;
1603	}	1981	}
1604	}	1982	}
1605	}	1983	}
1606		1984
1607	SV *	1985	SV *
…		…
1619		1997
1620	void	1998	void
1621	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1999	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1622		2000
1623	SV *	2001	SV *
1624	has_stack (Coro::State coro)	2002	has_cctx (Coro::State coro)
1625	PROTOTYPE: $	2003	PROTOTYPE: $
1626	CODE:	2004	CODE:
1627	RETVAL = boolSV (!!coro->cctx);	2005	RETVAL = boolSV (!!coro->cctx);
1628	OUTPUT:	2006	OUTPUT:
1629	RETVAL	2007	RETVAL
…		…
1648	case 1: RETVAL = coro->usecount; break;	2026	case 1: RETVAL = coro->usecount; break;
1649	}	2027	}
1650	OUTPUT:	2028	OUTPUT:
1651	RETVAL	2029	RETVAL
1652		2030
		2031	void
		2032	force_cctx ()
		2033	CODE:
		2034	struct coro *coro = SvSTATE (coro_current);
		2035	coro->cctx->idle_sp = 0;
		2036
		2037	void
		2038	swap_defsv (Coro::State self)
		2039	PROTOTYPE: $
		2040	ALIAS:
		2041	swap_defav = 1
		2042	CODE:
		2043	if (!self->slot)
		2044	croak ("cannot swap state with coroutine that has no saved state");
		2045	else
		2046	{
		2047	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2048	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2049
		2050	SV *tmp = *src; *src = *dst; *dst = tmp;
		2051	}
1653		2052
1654	MODULE = Coro::State PACKAGE = Coro	2053	MODULE = Coro::State PACKAGE = Coro
1655		2054
1656	BOOT:	2055	BOOT:
1657	{	2056	{
1658	int i;	2057	int i;
1659		2058
1660	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1661	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1662	av_async_pool = get_av ("Coro::async_pool", TRUE);	2059	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2060	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2061	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1663		2062
1664	coro_current = get_sv ("Coro::current", FALSE);	2063	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1665	SvREADONLY_on (coro_current);	2064	SvREADONLY_on (coro_current);
1666		2065
1667	coro_stash = gv_stashpv ("Coro", TRUE);	2066	coro_stash = gv_stashpv ("Coro", TRUE);
1668		2067
1669	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2068	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1670	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2069	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1671	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2070	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1672	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2071	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1675		2074
1676	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2075	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1677	coro_ready[i] = newAV ();	2076	coro_ready[i] = newAV ();
1678		2077
1679	{	2078	{
1680	SV *sv = perl_get_sv("Coro::API", 1);	2079	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2080	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1681		2081
1682	coroapi.schedule = api_schedule;	2082	coroapi.schedule = api_schedule;
1683	coroapi.save = api_save;
1684	coroapi.cede = api_cede;	2083	coroapi.cede = api_cede;
1685	coroapi.cede_notself = api_cede_notself;	2084	coroapi.cede_notself = api_cede_notself;
1686	coroapi.ready = api_ready;	2085	coroapi.ready = api_ready;
1687	coroapi.is_ready = api_is_ready;	2086	coroapi.is_ready = api_is_ready;
1688	coroapi.nready = &coro_nready;	2087	coroapi.nready = &coro_nready;
…		…
1697	void	2096	void
1698	_set_current (SV *current)	2097	_set_current (SV *current)
1699	PROTOTYPE: $	2098	PROTOTYPE: $
1700	CODE:	2099	CODE:
1701	SvREFCNT_dec (SvRV (coro_current));	2100	SvREFCNT_dec (SvRV (coro_current));
1702	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2101	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2102
		2103	void
		2104	_set_readyhook (SV *hook)
		2105	PROTOTYPE: $
		2106	CODE:
		2107	LOCK;
		2108	SvREFCNT_dec (coro_readyhook);
		2109	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2110	UNLOCK;
1703		2111
1704	int	2112	int
1705	prio (Coro::State coro, int newprio = 0)	2113	prio (Coro::State coro, int newprio = 0)
1706	ALIAS:	2114	ALIAS:
1707	nice = 1	2115	nice = 1
…		…
1737	CODE:	2145	CODE:
1738	RETVAL = coro_nready;	2146	RETVAL = coro_nready;
1739	OUTPUT:	2147	OUTPUT:
1740	RETVAL	2148	RETVAL
1741		2149
		2150	void
		2151	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2152	PROTOTYPE: $;$
		2153	CODE:
		2154	SvREFCNT_dec (self->throw);
		2155	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2156
1742	# for async_pool speedup	2157	# for async_pool speedup
1743	void	2158	void
1744	_pool_1 (SV *cb)	2159	_pool_1 (SV *cb)
1745	CODE:	2160	CODE:
1746	{	2161	{
1747	int i, len;	2162	struct coro *coro = SvSTATE (coro_current);
1748	HV *hv = (HV *)SvRV (coro_current);	2163	HV *hv = (HV *)SvRV (coro_current);
1749	AV *defav = GvAV (PL_defgv);	2164	AV *defav = GvAV (PL_defgv);
1750	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2165	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1751	AV *invoke_av;	2166	AV *invoke_av;
		2167	int i, len;
1752		2168
1753	if (!invoke)	2169	if (!invoke)
		2170	{
		2171	SV *old = PL_diehook;
		2172	PL_diehook = 0;
		2173	SvREFCNT_dec (old);
1754	croak ("\3terminate\2\n");	2174	croak ("\3async_pool terminate\2\n");
		2175	}
		2176
		2177	SvREFCNT_dec (coro->saved_deffh);
		2178	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1755		2179
1756	hv_store (hv, "desc", sizeof ("desc") - 1,	2180	hv_store (hv, "desc", sizeof ("desc") - 1,
1757	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2181	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1758		2182
1759	invoke_av = (AV *)SvRV (invoke);	2183	invoke_av = (AV *)SvRV (invoke);
…		…
1763		2187
1764	if (len > 0)	2188	if (len > 0)
1765	{	2189	{
1766	av_fill (defav, len - 1);	2190	av_fill (defav, len - 1);
1767	for (i = 0; i < len; ++i)	2191	for (i = 0; i < len; ++i)
1768	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2192	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1769	}	2193	}
1770		2194
1771	SvREFCNT_dec (invoke);	2195	SvREFCNT_dec (invoke);
1772	}	2196	}
1773		2197
…		…
1777	{	2201	{
1778	struct coro *coro = SvSTATE (coro_current);	2202	struct coro *coro = SvSTATE (coro_current);
1779		2203
1780	sv_setsv (cb, &PL_sv_undef);	2204	sv_setsv (cb, &PL_sv_undef);
1781		2205
		2206	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		2207	coro->saved_deffh = 0;
		2208
1782	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2209	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1783	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2210	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2211	{
		2212	SV *old = PL_diehook;
		2213	PL_diehook = 0;
		2214	SvREFCNT_dec (old);
1784	croak ("\3terminate\2\n");	2215	croak ("\3async_pool terminate\2\n");
		2216	}
1785		2217
1786	av_clear (GvAV (PL_defgv));	2218	av_clear (GvAV (PL_defgv));
1787	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2219	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1788	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2220	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1789		2221
1790	coro->save = CORO_SAVE_DEF;
1791	coro->prio = 0;	2222	coro->prio = 0;
1792		2223
1793	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2224	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1794	api_trace (coro_current, 0);	2225	api_trace (coro_current, 0);
1795		2226
1796	av_push (av_async_pool, newSVsv (coro_current));	2227	av_push (av_async_pool, newSVsv (coro_current));
1797	}	2228	}
1798		2229
		2230	#if 0
		2231
		2232	void
		2233	_generator_call (...)
		2234	PROTOTYPE: @
		2235	PPCODE:
		2236	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2237	xxxx
		2238	abort ();
		2239
		2240	SV *
		2241	gensub (SV *sub, ...)
		2242	PROTOTYPE: &;@
		2243	CODE:
		2244	{
		2245	struct coro *coro;
		2246	MAGIC *mg;
		2247	CV *xcv;
		2248	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2249	int i;
		2250
		2251	CvGV (ncv) = CvGV (cv);
		2252	CvFILE (ncv) = CvFILE (cv);
		2253
		2254	Newz (0, coro, 1, struct coro);
		2255	coro->args = newAV ();
		2256	coro->flags = CF_NEW;
		2257
		2258	av_extend (coro->args, items - 1);
		2259	for (i = 1; i < items; i++)
		2260	av_push (coro->args, newSVsv (ST (i)));
		2261
		2262	CvISXSUB_on (ncv);
		2263	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2264
		2265	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2266
		2267	CvXSUB (ncv) = CvXSUB (xcv);
		2268	CvANON_on (ncv);
		2269
		2270	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2271	RETVAL = newRV_noinc ((SV *)ncv);
		2272	}
		2273	OUTPUT:
		2274	RETVAL
		2275
		2276	#endif
		2277
1799		2278
1800	MODULE = Coro::State PACKAGE = Coro::AIO	2279	MODULE = Coro::State PACKAGE = Coro::AIO
1801		2280
1802	SV *	2281	void
1803	_get_state ()	2282	_get_state (SV *self)
1804	CODE:	2283	PPCODE:
1805	{	2284	{
1806	struct io_state *data;	2285	AV *defav = GvAV (PL_defgv);
1807		2286	AV *av = newAV ();
		2287	int i;
1808	RETVAL = newSV (sizeof (struct io_state));	2288	SV *data_sv = newSV (sizeof (struct io_state));
1809	data = (struct io_state *)SvPVX (RETVAL);	2289	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1810	SvCUR_set (RETVAL, sizeof (struct io_state));	2290	SvCUR_set (data_sv, sizeof (struct io_state));
1811	SvPOK_only (RETVAL);	2291	SvPOK_only (data_sv);
1812		2292
1813	data->errorno = errno;	2293	data->errorno = errno;
1814	data->laststype = PL_laststype;	2294	data->laststype = PL_laststype;
1815	data->laststatval = PL_laststatval;	2295	data->laststatval = PL_laststatval;
1816	data->statcache = PL_statcache;	2296	data->statcache = PL_statcache;
		2297
		2298	av_extend (av, AvFILLp (defav) + 1 + 1);
		2299
		2300	for (i = 0; i <= AvFILLp (defav); ++i)
		2301	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2302
		2303	av_push (av, data_sv);
		2304
		2305	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2306
		2307	api_ready (self);
1817	}	2308	}
1818	OUTPUT:
1819	RETVAL
1820		2309
1821	void	2310	void
1822	_set_state (char *data_)	2311	_set_state (SV *state)
1823	PROTOTYPE: $	2312	PROTOTYPE: $
1824	CODE:	2313	PPCODE:
1825	{	2314	{
1826	struct io_state *data = (void *)data_;	2315	AV *av = (AV *)SvRV (state);
		2316	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2317	int i;
1827		2318
1828	errno = data->errorno;	2319	errno = data->errorno;
1829	PL_laststype = data->laststype;	2320	PL_laststype = data->laststype;
1830	PL_laststatval = data->laststatval;	2321	PL_laststatval = data->laststatval;
1831	PL_statcache = data->statcache;	2322	PL_statcache = data->statcache;
1832	}
1833		2323
		2324	EXTEND (SP, AvFILLp (av));
		2325	for (i = 0; i < AvFILLp (av); ++i)
		2326	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2327	}
		2328
		2329
		2330	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2331
		2332	BOOT:
		2333	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2334
		2335	SV *
		2336	_schedule (...)
		2337	PROTOTYPE: @
		2338	CODE:
		2339	{
		2340	static int incede;
		2341
		2342	api_cede_notself ();
		2343
		2344	++incede;
		2345	while (coro_nready >= incede && api_cede ())
		2346	;
		2347
		2348	sv_setsv (sv_activity, &PL_sv_undef);
		2349	if (coro_nready >= incede)
		2350	{
		2351	PUSHMARK (SP);
		2352	PUTBACK;
		2353	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2354	SPAGAIN;
		2355	}
		2356
		2357	--incede;
		2358	}
		2359
		2360
		2361	MODULE = Coro::State PACKAGE = PerlIO::cede
		2362
		2363	BOOT:
		2364	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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