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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.191 by root, Fri Oct 5 20:47:49 2007 UTC vs.
Revision 1.258 by root, Sun Nov 9 23:08:49 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
41	#else	52	#else
42	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
43	#endif	54	#endif
44		55
45	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
46	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
47		58
48	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
49	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
50	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
51	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif
79
80	/* 5.8.8 */
81	#ifndef GV_NOTQUAL
82	# define GV_NOTQUAL 0
83	#endif
84	#ifndef newSV
85	# define newSV(l) NEWSV(0,l)
86	#endif	107	#endif
87		108
88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	109	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89	# undef CORO_STACKGUARD	110	# undef CORO_STACKGUARD
90	#endif	111	#endif
…		…
106	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
107		128
108	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
109	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
111	#else	133	#else
112	# define attribute(x)	134	# define attribute(x)
113	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
114	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
115		141
116	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
117		143
118	#include "CoroAPI.h"	144	#include "CoroAPI.h"
119		145
120	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
121	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
122	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
123	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
124	#else	155	#else
		156
125	# define LOCK (void)0	157	# define LOCK (void)0
126	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
127	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
128		166
129	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
130	struct io_state	168	struct io_state
131	{	169	{
		170	AV *res;
132	int errorno;	171	int errorno;
133	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
134	int laststatval;	173	int laststatval;
135	Stat_t statcache;	174	Stat_t statcache;
136	};	175	};
137		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
138	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
139	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
140	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
141	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
142	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
143	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
144		186
145	static GV *irsgv; /* $/ */	187	static GV *irsgv; /* $/ */
146	static GV *stdoutgv; /* *STDOUT */	188	static GV *stdoutgv; /* *STDOUT */
		189	static SV *rv_diehook;
		190	static SV *rv_warnhook;
		191	static HV *hv_sig; /* %SIG */
147		192
148	/* async_pool helper stuff */	193	/* async_pool helper stuff */
149	static SV *sv_pool_rss;	194	static SV *sv_pool_rss;
150	static SV *sv_pool_size;	195	static SV *sv_pool_size;
151	static AV *av_async_pool;	196	static AV *av_async_pool;
		197
		198	/* Coro::AnyEvent */
		199	static SV *sv_activity;
152		200
153	static struct coro_cctx *cctx_first;	201	static struct coro_cctx *cctx_first;
154	static int cctx_count, cctx_idle;	202	static int cctx_count, cctx_idle;
155		203
156	enum {	204	enum {
…		…
174	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	222	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
175	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	223	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
176	JMPENV *top_env;	224	JMPENV *top_env;
177	coro_context cctx;	225	coro_context cctx;
178		226
		227	U32 gen;
179	#if CORO_USE_VALGRIND	228	#if CORO_USE_VALGRIND
180	int valgrind_id;	229	int valgrind_id;
181	#endif	230	#endif
182	unsigned char flags;	231	unsigned char flags;
183	} coro_cctx;	232	} coro_cctx;
…		…
187	CF_READY = 0x0002, /* coroutine is ready */	236	CF_READY = 0x0002, /* coroutine is ready */
188	CF_NEW = 0x0004, /* has never been switched to */	237	CF_NEW = 0x0004, /* has never been switched to */
189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	238	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
190	};	239	};
191		240
		241	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		242	typedef struct {
		243	SV *defsv;
		244	AV *defav;
		245	SV *errsv;
		246	SV *irsgv;
		247	#define VAR(name,type) type name;
		248	# include "state.h"
		249	#undef VAR
		250	} perl_slots;
		251
		252	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		253
192	/* this is a structure representing a perl-level coroutine */	254	/* this is a structure representing a perl-level coroutine */
193	struct coro {	255	struct coro {
194	/* the c coroutine allocated to this perl coroutine, if any */	256	/* the c coroutine allocated to this perl coroutine, if any */
195	coro_cctx *cctx;	257	coro_cctx *cctx;
196		258
		259	/* process data */
		260	AV *mainstack;
		261	perl_slots *slot; /* basically the saved sp */
		262
197	/* data associated with this coroutine (initial args) */	263	AV *args; /* data associated with this coroutine (initial args) */
198	AV *args;	264	int refcnt; /* coroutines are refcounted, yes */
199	int refcnt;
200	int flags; /* CF_ flags */	265	int flags; /* CF_ flags */
201		266	HV *hv; /* the perl hash associated with this coro, if any */
202	/* optionally saved, might be zero */
203	AV *defav; /* @_ */
204	SV *defsv; /* $_ */
205	SV *errsv; /* $@ */
206	SV *deffh; /* default filehandle */
207	SV *irssv; /* $/ */
208	SV *irssv_sv; /* real $/ cache */
209
210	#define VAR(name,type) type name;
211	# include "state.h"
212	#undef VAR
213		267
214	/* statistics */	268	/* statistics */
215	int usecount; /* number of transfers to this coro */	269	int usecount; /* number of transfers to this coro */
216		270
217	/* coro process data */	271	/* coro process data */
218	int prio;	272	int prio;
219	//SV *throw;	273	SV *throw; /* exception to be thrown */
220		274
221	/* async_pool */	275	/* async_pool */
222	SV *saved_deffh;	276	SV *saved_deffh;
223		277
224	/* linked list */	278	/* linked list */
225	struct coro *next, *prev;	279	struct coro *next, *prev;
226	HV *hv; /* the perl hash associated with this coro, if any */
227	};	280	};
228		281
229	typedef struct coro *Coro__State;	282	typedef struct coro *Coro__State;
230	typedef struct coro *Coro__State_or_hashref;	283	typedef struct coro *Coro__State_or_hashref;
231		284
…		…
238	#define PRIO_IDLE -3	291	#define PRIO_IDLE -3
239	#define PRIO_MIN -4	292	#define PRIO_MIN -4
240		293
241	/* for Coro.pm */	294	/* for Coro.pm */
242	static SV *coro_current;	295	static SV *coro_current;
		296	static SV *coro_readyhook;
243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	297	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
244	static int coro_nready;	298	static int coro_nready;
245	static struct coro *coro_first;	299	static struct coro *coro_first;
246		300
247	/** lowlevel stuff **********************************************************/	301	/** lowlevel stuff **********************************************************/
248		302
		303	static SV *
		304	coro_get_sv (pTHX_ const char *name, int create)
		305	{
		306	#if PERL_VERSION_ATLEAST (5,10,0)
		307	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		308	get_sv (name, create);
		309	#endif
		310	return get_sv (name, create);
		311	}
		312
		313	static AV *
		314	coro_get_av (pTHX_ const char *name, int create)
		315	{
		316	#if PERL_VERSION_ATLEAST (5,10,0)
		317	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		318	get_av (name, create);
		319	#endif
		320	return get_av (name, create);
		321	}
		322
		323	static HV *
		324	coro_get_hv (pTHX_ const char *name, int create)
		325	{
		326	#if PERL_VERSION_ATLEAST (5,10,0)
		327	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		328	get_hv (name, create);
		329	#endif
		330	return get_hv (name, create);
		331	}
		332
249	static AV *	333	static AV *
250	coro_clone_padlist (pTHX_ CV *cv)	334	coro_clone_padlist (pTHX_ CV *cv)
251	{	335	{
252	AV *padlist = CvPADLIST (cv);	336	AV *padlist = CvPADLIST (cv);
253	AV *newpadlist, *newpad;	337	AV *newpadlist, *newpad;
254		338
255	newpadlist = newAV ();	339	newpadlist = newAV ();
256	AvREAL_off (newpadlist);	340	AvREAL_off (newpadlist);
257	#if PERL_VERSION_ATLEAST (5,9,0)	341	#if PERL_VERSION_ATLEAST (5,10,0)
258	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	342	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
259	#else	343	#else
260	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	344	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
261	#endif	345	#endif
262	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	346	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
263	--AvFILLp (padlist);	347	--AvFILLp (padlist);
264		348
265	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	349	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
266	av_store (newpadlist, 1, (SV *)newpad);	350	av_store (newpadlist, 1, (SV *)newpad);
267		351
268	return newpadlist;	352	return newpadlist;
269	}	353	}
270		354
…		…
300		384
301	/* casting is fun. */	385	/* casting is fun. */
302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	386	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
303	free_padlist (aTHX_ padlist);	387	free_padlist (aTHX_ padlist);
304		388
305	SvREFCNT_dec (av);	389	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
306		390
307	return 0;	391	return 0;
308	}	392	}
309		393
310	#define PERL_MAGIC_coro PERL_MAGIC_ext	394	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		395	#define CORO_MAGIC_type_state PERL_MAGIC_ext
311		396
312	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	397	static MGVTBL coro_cv_vtbl = {
		398	0, 0, 0, 0,
		399	coro_cv_free
		400	};
313		401
314	#define CORO_MAGIC(cv) \	402	#define CORO_MAGIC(sv, type) \
315	SvMAGIC (cv) \	403	SvMAGIC (sv) \
316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	404	? SvMAGIC (sv)->mg_type == type \
317	? SvMAGIC (cv) \	405	? SvMAGIC (sv) \
318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	406	: mg_find (sv, type) \
319	: 0	407	: 0
		408
		409	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		410	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
320		411
321	static struct coro *	412	static struct coro *
322	SvSTATE_ (pTHX_ SV *coro)	413	SvSTATE_ (pTHX_ SV *coro)
323	{	414	{
324	HV *stash;	415	HV *stash;
325	MAGIC *mg;	416	MAGIC *mg;
326		417
327	if (SvROK (coro))	418	if (SvROK (coro))
328	coro = SvRV (coro);	419	coro = SvRV (coro);
329		420
330	if (SvTYPE (coro) != SVt_PVHV)	421	if (expect_false (SvTYPE (coro) != SVt_PVHV))
331	croak ("Coro::State object required");	422	croak ("Coro::State object required");
332		423
333	stash = SvSTASH (coro);	424	stash = SvSTASH (coro);
334	if (stash != coro_stash && stash != coro_state_stash)	425	if (expect_false (stash != coro_stash && stash != coro_state_stash))
335	{	426	{
336	/* very slow, but rare, check */	427	/* very slow, but rare, check */
337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	428	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
338	croak ("Coro::State object required");	429	croak ("Coro::State object required");
339	}	430	}
340		431
341	mg = CORO_MAGIC (coro);	432	mg = CORO_MAGIC_state (coro);
342	return (struct coro *)mg->mg_ptr;	433	return (struct coro *)mg->mg_ptr;
343	}	434	}
344		435
345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	436	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
346		437
347	/* the next two functions merely cache the padlists */	438	/* the next two functions merely cache the padlists */
348	static void	439	static void
349	get_padlist (pTHX_ CV *cv)	440	get_padlist (pTHX_ CV *cv)
350	{	441	{
351	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
352	AV *av;	443	AV *av;
353		444
354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	445	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	446	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
356	else	447	else
357	{	448	{
358	#if CORO_PREFER_PERL_FUNCTIONS	449	#if CORO_PREFER_PERL_FUNCTIONS
359	/* this is probably cleaner, but also slower? */	450	/* this is probably cleaner? but also slower! */
		451	/* in practise, it seems to be less stable */
360	CV *cp = Perl_cv_clone (cv);	452	CV *cp = Perl_cv_clone (cv);
361	CvPADLIST (cv) = CvPADLIST (cp);	453	CvPADLIST (cv) = CvPADLIST (cp);
362	CvPADLIST (cp) = 0;	454	CvPADLIST (cp) = 0;
363	SvREFCNT_dec (cp);	455	SvREFCNT_dec (cp);
364	#else	456	#else
…		…
368	}	460	}
369		461
370	static void	462	static void
371	put_padlist (pTHX_ CV *cv)	463	put_padlist (pTHX_ CV *cv)
372	{	464	{
373	MAGIC *mg = CORO_MAGIC (cv);	465	MAGIC *mg = CORO_MAGIC_cv (cv);
374	AV *av;	466	AV *av;
375		467
376	if (!mg)	468	if (expect_false (!mg))
377	{	469	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
378	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
379	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
380	mg->mg_virtual = &vtbl_coro;
381	mg->mg_obj = (SV *)newAV ();
382	}
383		470
384	av = (AV *)mg->mg_obj;	471	av = (AV *)mg->mg_obj;
385		472
386	if (AvFILLp (av) >= AvMAX (av))	473	if (expect_false (AvFILLp (av) >= AvMAX (av)))
387	av_extend (av, AvMAX (av) + 1);	474	av_extend (av, AvMAX (av) + 1);
388		475
389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	476	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
390	}	477	}
391		478
392	/** load & save, init *******************************************************/	479	/** load & save, init *******************************************************/
393		480
394	static void	481	static void
395	load_perl (pTHX_ Coro__State c)	482	load_perl (pTHX_ Coro__State c)
396	{	483	{
		484	perl_slots *slot = c->slot;
		485	c->slot = 0;
		486
		487	PL_mainstack = c->mainstack;
		488
		489	GvSV (PL_defgv) = slot->defsv;
		490	GvAV (PL_defgv) = slot->defav;
		491	GvSV (PL_errgv) = slot->errsv;
		492	GvSV (irsgv) = slot->irsgv;
		493
397	#define VAR(name,type) PL_ ## name = c->name;	494	#define VAR(name,type) PL_ ## name = slot->name;
398	# include "state.h"	495	# include "state.h"
399	#undef VAR	496	#undef VAR
400
401	GvSV (PL_defgv) = c->defsv;
402	GvAV (PL_defgv) = c->defav;
403	GvSV (PL_errgv) = c->errsv;
404	GvSV (irsgv) = c->irssv_sv;
405		497
406	{	498	{
407	dSP;	499	dSP;
		500
408	CV *cv;	501	CV *cv;
409		502
410	/* now do the ugly restore mess */	503	/* now do the ugly restore mess */
411	while ((cv = (CV *)POPs))	504	while (expect_true (cv = (CV *)POPs))
412	{	505	{
413	put_padlist (aTHX_ cv); /* mark this padlist as available */	506	put_padlist (aTHX_ cv); /* mark this padlist as available */
414	CvDEPTH (cv) = PTR2IV (POPs);	507	CvDEPTH (cv) = PTR2IV (POPs);
415	CvPADLIST (cv) = (AV *)POPs;	508	CvPADLIST (cv) = (AV *)POPs;
416	}	509	}
…		…
435		528
436	XPUSHs (Nullsv);	529	XPUSHs (Nullsv);
437	/* this loop was inspired by pp_caller */	530	/* this loop was inspired by pp_caller */
438	for (;;)	531	for (;;)
439	{	532	{
440	while (cxix >= 0)	533	while (expect_true (cxix >= 0))
441	{	534	{
442	PERL_CONTEXT *cx = &ccstk[cxix--];	535	PERL_CONTEXT *cx = &ccstk[cxix--];
443		536
444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	537	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
445	{	538	{
446	CV *cv = cx->blk_sub.cv;	539	CV *cv = cx->blk_sub.cv;
447		540
448	if (CvDEPTH (cv))	541	if (expect_true (CvDEPTH (cv)))
449	{	542	{
450	EXTEND (SP, 3);	543	EXTEND (SP, 3);
451	PUSHs ((SV *)CvPADLIST (cv));	544	PUSHs ((SV *)CvPADLIST (cv));
452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	545	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453	PUSHs ((SV *)cv);	546	PUSHs ((SV *)cv);
454		547
455	CvDEPTH (cv) = 0;	548	CvDEPTH (cv) = 0;
456	get_padlist (aTHX_ cv);	549	get_padlist (aTHX_ cv);
457	}	550	}
458	}	551	}
459	}	552	}
460		553
461	if (top_si->si_type == PERLSI_MAIN)	554	if (expect_true (top_si->si_type == PERLSI_MAIN))
462	break;	555	break;
463		556
464	top_si = top_si->si_prev;	557	top_si = top_si->si_prev;
465	ccstk = top_si->si_cxstack;	558	ccstk = top_si->si_cxstack;
466	cxix = top_si->si_cxix;	559	cxix = top_si->si_cxix;
467	}	560	}
468		561
469	PUTBACK;	562	PUTBACK;
470	}	563	}
471		564
		565	/* allocate some space on the context stack for our purposes */
		566	/* we manually unroll here, as usually 2 slots is enough */
		567	if (SLOT_COUNT >= 1) CXINC;
		568	if (SLOT_COUNT >= 2) CXINC;
		569	if (SLOT_COUNT >= 3) CXINC;
		570	{
		571	int i;
		572	for (i = 3; i < SLOT_COUNT; ++i)
		573	CXINC;
		574	}
		575	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		576
		577	c->mainstack = PL_mainstack;
		578
		579	{
		580	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		581
472	c->defav = GvAV (PL_defgv);	582	slot->defav = GvAV (PL_defgv);
473	c->defsv = DEFSV;	583	slot->defsv = DEFSV;
474	c->errsv = ERRSV;	584	slot->errsv = ERRSV;
475	c->irssv_sv = GvSV (irsgv);	585	slot->irsgv = GvSV (irsgv);
476		586
477	#define VAR(name,type)c->name = PL_ ## name;	587	#define VAR(name,type) slot->name = PL_ ## name;
478	# include "state.h"	588	# include "state.h"
479	#undef VAR	589	#undef VAR
		590	}
480	}	591	}
481		592
482	/*	593	/*
483	* allocate various perl stacks. This is an exact copy	594	* allocate various perl stacks. This is an exact copy
484	* of perl.c:init_stacks, except that it uses less memory	595	* of perl.c:init_stacks, except that it uses less memory
…		…
489	# define coro_init_stacks init_stacks	600	# define coro_init_stacks init_stacks
490	#else	601	#else
491	static void	602	static void
492	coro_init_stacks (pTHX)	603	coro_init_stacks (pTHX)
493	{	604	{
494	PL_curstackinfo = new_stackinfo(64, 6);	605	PL_curstackinfo = new_stackinfo(32, 8);
495	PL_curstackinfo->si_type = PERLSI_MAIN;	606	PL_curstackinfo->si_type = PERLSI_MAIN;
496	PL_curstack = PL_curstackinfo->si_stack;	607	PL_curstack = PL_curstackinfo->si_stack;
497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	608	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
498		609
499	PL_stack_base = AvARRAY(PL_curstack);	610	PL_stack_base = AvARRAY(PL_curstack);
500	PL_stack_sp = PL_stack_base;	611	PL_stack_sp = PL_stack_base;
501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	612	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
502		613
503	New(50,PL_tmps_stack,64,SV*);	614	New(50,PL_tmps_stack,32,SV*);
504	PL_tmps_floor = -1;	615	PL_tmps_floor = -1;
505	PL_tmps_ix = -1;	616	PL_tmps_ix = -1;
506	PL_tmps_max = 64;	617	PL_tmps_max = 32;
507		618
508	New(54,PL_markstack,16,I32);	619	New(54,PL_markstack,16,I32);
509	PL_markstack_ptr = PL_markstack;	620	PL_markstack_ptr = PL_markstack;
510	PL_markstack_max = PL_markstack + 16;	621	PL_markstack_max = PL_markstack + 16;
511		622
512	#ifdef SET_MARK_OFFSET	623	#ifdef SET_MARK_OFFSET
513	SET_MARK_OFFSET;	624	SET_MARK_OFFSET;
514	#endif	625	#endif
515		626
516	New(54,PL_scopestack,16,I32);	627	New(54,PL_scopestack,8,I32);
517	PL_scopestack_ix = 0;	628	PL_scopestack_ix = 0;
518	PL_scopestack_max = 16;	629	PL_scopestack_max = 8;
519		630
520	New(54,PL_savestack,64,ANY);	631	New(54,PL_savestack,24,ANY);
521	PL_savestack_ix = 0;	632	PL_savestack_ix = 0;
522	PL_savestack_max = 64;	633	PL_savestack_max = 24;
523		634
524	#if !PERL_VERSION_ATLEAST (5,9,0)	635	#if !PERL_VERSION_ATLEAST (5,10,0)
525	New(54,PL_retstack,4,OP*);	636	New(54,PL_retstack,4,OP*);
526	PL_retstack_ix = 0;	637	PL_retstack_ix = 0;
527	PL_retstack_max = 4;	638	PL_retstack_max = 4;
528	#endif	639	#endif
529	}	640	}
…		…
531		642
532	/*	643	/*
533	* destroy the stacks, the callchain etc...	644	* destroy the stacks, the callchain etc...
534	*/	645	*/
535	static void	646	static void
536	coro_destroy_stacks (pTHX)	647	coro_destruct_stacks (pTHX)
537	{	648	{
538	while (PL_curstackinfo->si_next)	649	while (PL_curstackinfo->si_next)
539	PL_curstackinfo = PL_curstackinfo->si_next;	650	PL_curstackinfo = PL_curstackinfo->si_next;
540		651
541	while (PL_curstackinfo)	652	while (PL_curstackinfo)
…		…
552		663
553	Safefree (PL_tmps_stack);	664	Safefree (PL_tmps_stack);
554	Safefree (PL_markstack);	665	Safefree (PL_markstack);
555	Safefree (PL_scopestack);	666	Safefree (PL_scopestack);
556	Safefree (PL_savestack);	667	Safefree (PL_savestack);
557	#if !PERL_VERSION_ATLEAST (5,9,0)	668	#if !PERL_VERSION_ATLEAST (5,10,0)
558	Safefree (PL_retstack);	669	Safefree (PL_retstack);
559	#endif	670	#endif
560	}	671	}
561		672
562	static size_t	673	static size_t
…		…
564	{	675	{
565	size_t rss = sizeof (*coro);	676	size_t rss = sizeof (*coro);
566		677
567	if (coro->mainstack)	678	if (coro->mainstack)
568	{	679	{
		680	perl_slots tmp_slot;
		681	perl_slots *slot;
		682
569	if (coro->flags & CF_RUNNING)	683	if (coro->flags & CF_RUNNING)
570	{	684	{
		685	slot = &tmp_slot;
		686
571	#define VAR(name,type)coro->name = PL_ ## name;	687	#define VAR(name,type) slot->name = PL_ ## name;
572	# include "state.h"	688	# include "state.h"
573	#undef VAR	689	#undef VAR
574	}	690	}
		691	else
		692	slot = coro->slot;
575		693
		694	if (slot)
		695	{
576	rss += sizeof (coro->curstackinfo);	696	rss += sizeof (slot->curstackinfo);
577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	697	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	698	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
580	rss += coro->tmps_max * sizeof (SV *);	699	rss += slot->tmps_max * sizeof (SV *);
581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	700	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
582	rss += coro->scopestack_max * sizeof (I32);	701	rss += slot->scopestack_max * sizeof (I32);
583	rss += coro->savestack_max * sizeof (ANY);	702	rss += slot->savestack_max * sizeof (ANY);
584		703
585	#if !PERL_VERSION_ATLEAST (5,9,0)	704	#if !PERL_VERSION_ATLEAST (5,10,0)
586	rss += coro->retstack_max * sizeof (OP *);	705	rss += slot->retstack_max * sizeof (OP *);
587	#endif	706	#endif
		707	}
588	}	708	}
589		709
590	return rss;	710	return rss;
591	}	711	}
592		712
593	/** coroutine stack handling ************************************************/	713	/** coroutine stack handling ************************************************/
		714
		715	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		716	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		718
		719	/* apparently < 5.8.8 */
		720	#ifndef MgPV_nolen_const
		721	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		722	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		723	(const char*)(mg)->mg_ptr)
		724	#endif
		725
		726	/*
		727	* This overrides the default magic get method of %SIG elements.
		728	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		729	* and instead of tryign to save and restore the hash elements, we just provide
		730	* readback here.
		731	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		732	* not expecting this to actually change the hook. This is a potential problem
		733	* when a schedule happens then, but we ignore this.
		734	*/
		735	static int
		736	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		737	{
		738	const char *s = MgPV_nolen_const (mg);
		739
		740	if (*s == '_')
		741	{
		742	SV **svp = 0;
		743
		744	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		745	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		746
		747	if (svp)
		748	{
		749	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		750	return 0;
		751	}
		752	}
		753
		754	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		755	}
		756
		757	static int
		758	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		759	{
		760	const char *s = MgPV_nolen_const (mg);
		761
		762	if (*s == '_')
		763	{
		764	SV **svp = 0;
		765
		766	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		767	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		768
		769	if (svp)
		770	{
		771	SV *old = *svp;
		772	*svp = 0;
		773	SvREFCNT_dec (old);
		774	return 0;
		775	}
		776	}
		777
		778	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		779	}
		780
		781	static int
		782	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	const char *s = MgPV_nolen_const (mg);
		785
		786	if (*s == '_')
		787	{
		788	SV **svp = 0;
		789
		790	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		791	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		792
		793	if (svp)
		794	{
		795	SV *old = *svp;
		796	*svp = newSVsv (sv);
		797	SvREFCNT_dec (old);
		798	return 0;
		799	}
		800	}
		801
		802	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		803	}
594		804
595	static void	805	static void
596	coro_setup (pTHX_ struct coro *coro)	806	coro_setup (pTHX_ struct coro *coro)
597	{	807	{
598	/*	808	/*
…		…
603	PL_runops = RUNOPS_DEFAULT;	813	PL_runops = RUNOPS_DEFAULT;
604	PL_curcop = &PL_compiling;	814	PL_curcop = &PL_compiling;
605	PL_in_eval = EVAL_NULL;	815	PL_in_eval = EVAL_NULL;
606	PL_comppad = 0;	816	PL_comppad = 0;
607	PL_curpm = 0;	817	PL_curpm = 0;
		818	PL_curpad = 0;
608	PL_localizing = 0;	819	PL_localizing = 0;
609	PL_dirty = 0;	820	PL_dirty = 0;
610	PL_restartop = 0;	821	PL_restartop = 0;
		822	#if PERL_VERSION_ATLEAST (5,10,0)
		823	PL_parser = 0;
		824	#endif
		825
		826	/* recreate the die/warn hooks */
		827	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		828	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
611		829
612	GvSV (PL_defgv) = newSV (0);	830	GvSV (PL_defgv) = newSV (0);
613	GvAV (PL_defgv) = coro->args; coro->args = 0;	831	GvAV (PL_defgv) = coro->args; coro->args = 0;
614	GvSV (PL_errgv) = newSV (0);	832	GvSV (PL_errgv) = newSV (0);
615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	833	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
616	PL_rs = newSVsv (GvSV (irsgv));	834	PL_rs = newSVsv (GvSV (irsgv));
617	PL_defoutgv = SvREFCNT_inc (stdoutgv);	835	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
618		836
619	{	837	{
620	dSP;	838	dSP;
621	LOGOP myop;	839	LOGOP myop;
622		840
623	Zero (&myop, 1, LOGOP);	841	Zero (&myop, 1, LOGOP);
624	myop.op_next = Nullop;	842	myop.op_next = Nullop;
625	myop.op_flags = OPf_WANT_VOID;	843	myop.op_flags = OPf_WANT_VOID;
626		844
627	PUSHMARK (SP);	845	PUSHMARK (SP);
628	XPUSHs (av_shift (GvAV (PL_defgv)));	846	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
629	PUTBACK;	847	PUTBACK;
630	PL_op = (OP *)&myop;	848	PL_op = (OP *)&myop;
631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	849	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
632	SPAGAIN;	850	SPAGAIN;
633	}	851	}
634		852
635	ENTER; /* necessary e.g. for dounwind */	853	/* this newly created coroutine might be run on an existing cctx which most
		854	* likely was suspended in set_stacklevel, called from entersub.
		855	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		856	* so we ENTER here for symmetry
		857	*/
		858	ENTER;
636	}	859	}
637		860
638	static void	861	static void
639	coro_destroy (pTHX_ struct coro *coro)	862	coro_destruct (pTHX_ struct coro *coro)
640	{	863	{
641	if (!IN_DESTRUCT)	864	if (!IN_DESTRUCT)
642	{	865	{
643	/* restore all saved variables and stuff */	866	/* restore all saved variables and stuff */
644	LEAVE_SCOPE (0);	867	LEAVE_SCOPE (0);
…		…
660	SvREFCNT_dec (GvSV (PL_errgv));	883	SvREFCNT_dec (GvSV (PL_errgv));
661	SvREFCNT_dec (PL_defoutgv);	884	SvREFCNT_dec (PL_defoutgv);
662	SvREFCNT_dec (PL_rs);	885	SvREFCNT_dec (PL_rs);
663	SvREFCNT_dec (GvSV (irsgv));	886	SvREFCNT_dec (GvSV (irsgv));
664		887
		888	SvREFCNT_dec (PL_diehook);
		889	SvREFCNT_dec (PL_warnhook);
		890
665	SvREFCNT_dec (coro->saved_deffh);	891	SvREFCNT_dec (coro->saved_deffh);
666	//SvREFCNT_dec (coro->throw);	892	SvREFCNT_dec (coro->throw);
667		893
668	coro_destroy_stacks (aTHX);	894	coro_destruct_stacks (aTHX);
669	}	895	}
670		896
671	static void	897	static void
672	free_coro_mortal (pTHX)	898	free_coro_mortal (pTHX)
673	{	899	{
674	if (coro_mortal)	900	if (expect_true (coro_mortal))
675	{	901	{
676	SvREFCNT_dec (coro_mortal);	902	SvREFCNT_dec (coro_mortal);
677	coro_mortal = 0;	903	coro_mortal = 0;
678	}	904	}
679	}	905	}
…		…
708	bot = PL_stack_base + cx->blk_oldsp + 1;	934	bot = PL_stack_base + cx->blk_oldsp + 1;
709	top = cx->blk_gimme == G_ARRAY ? SP + 1	935	top = cx->blk_gimme == G_ARRAY ? SP + 1
710	: cx->blk_gimme == G_SCALAR ? bot + 1	936	: cx->blk_gimme == G_SCALAR ? bot + 1
711	: bot;	937	: bot;
712		938
		939	av_extend (av, top - bot);
713	while (bot < top)	940	while (bot < top)
714	av_push (av, SvREFCNT_inc (*bot++));	941	av_push (av, SvREFCNT_inc_NN (*bot++));
715		942
716	PL_runops = RUNOPS_DEFAULT;	943	PL_runops = RUNOPS_DEFAULT;
717	ENTER;	944	ENTER;
718	SAVETMPS;	945	SAVETMPS;
719	EXTEND (SP, 3);	946	EXTEND (SP, 3);
…		…
757	SAVETMPS;	984	SAVETMPS;
758	EXTEND (SP, 3);	985	EXTEND (SP, 3);
759	PUSHMARK (SP);	986	PUSHMARK (SP);
760	PUSHs (&PL_sv_yes);	987	PUSHs (&PL_sv_yes);
761	PUSHs (fullname);	988	PUSHs (fullname);
762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	989	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
763	PUTBACK;	990	PUTBACK;
764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	991	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	992	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
766	SPAGAIN;	993	SPAGAIN;
767	FREETMPS;	994	FREETMPS;
…		…
803		1030
804	/* inject a fake call to Coro::State::_cctx_init into the execution */	1031	/* inject a fake call to Coro::State::_cctx_init into the execution */
805	/* _cctx_init should be careful, as it could be called at almost any time */	1032	/* _cctx_init should be careful, as it could be called at almost any time */
806	/* during execution of a perl program */	1033	/* during execution of a perl program */
807	static void NOINLINE	1034	static void NOINLINE
808	prepare_cctx (pTHX_ coro_cctx *cctx)	1035	cctx_prepare (pTHX_ coro_cctx *cctx)
809	{	1036	{
810	dSP;	1037	dSP;
811	LOGOP myop;	1038	LOGOP myop;
812		1039
813	PL_top_env = &PL_start_env;	1040	PL_top_env = &PL_start_env;
…		…
831		1058
832	/*	1059	/*
833	* this is a _very_ stripped down perl interpreter ;)	1060	* this is a _very_ stripped down perl interpreter ;)
834	*/	1061	*/
835	static void	1062	static void
836	coro_run (void *arg)	1063	cctx_run (void *arg)
837	{	1064	{
		1065	#ifdef USE_ITHREADS
		1066	# if CORO_PTHREAD
		1067	PERL_SET_CONTEXT (coro_thx);
		1068	# endif
		1069	#endif
		1070	{
838	dTHX;	1071	dTHX;
839		1072
840	/* coro_run is the alternative tail of transfer(), so unlock here. */	1073	/* cctx_run is the alternative tail of transfer(), so unlock here. */
841	UNLOCK;	1074	UNLOCK;
842		1075
843	/* we now skip the entersub that lead to transfer() */	1076	/* we now skip the entersub that lead to transfer() */
844	PL_op = PL_op->op_next;	1077	PL_op = PL_op->op_next;
845		1078
846	/* inject a fake subroutine call to cctx_init */	1079	/* inject a fake subroutine call to cctx_init */
847	prepare_cctx (aTHX_ (coro_cctx *)arg);	1080	cctx_prepare (aTHX_ (coro_cctx *)arg);
848		1081
849	/* somebody or something will hit me for both perl_run and PL_restartop */	1082	/* somebody or something will hit me for both perl_run and PL_restartop */
850	PL_restartop = PL_op;	1083	PL_restartop = PL_op;
851	perl_run (PL_curinterp);	1084	perl_run (PL_curinterp);
852		1085
853	/*	1086	/*
854	* If perl-run returns we assume exit() was being called or the coro	1087	* If perl-run returns we assume exit() was being called or the coro
855	* fell off the end, which seems to be the only valid (non-bug)	1088	* fell off the end, which seems to be the only valid (non-bug)
856	* reason for perl_run to return. We try to exit by jumping to the	1089	* reason for perl_run to return. We try to exit by jumping to the
857	* bootstrap-time "top" top_env, as we cannot restore the "main"	1090	* bootstrap-time "top" top_env, as we cannot restore the "main"
858	* coroutine as Coro has no such concept	1091	* coroutine as Coro has no such concept
859	*/	1092	*/
860	PL_top_env = main_top_env;	1093	PL_top_env = main_top_env;
861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1094	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1095	}
862	}	1096	}
863		1097
864	static coro_cctx *	1098	static coro_cctx *
865	cctx_new ()	1099	cctx_new ()
866	{	1100	{
867	coro_cctx *cctx;	1101	coro_cctx *cctx;
		1102
		1103	++cctx_count;
		1104	New (0, cctx, 1, coro_cctx);
		1105
		1106	cctx->gen = cctx_gen;
		1107	cctx->flags = 0;
		1108
		1109	return cctx;
		1110	}
		1111
		1112	/* create a new cctx only suitable as source */
		1113	static coro_cctx *
		1114	cctx_new_empty ()
		1115	{
		1116	coro_cctx *cctx = cctx_new ();
		1117
		1118	cctx->sptr = 0;
		1119	cctx->idle_sp = 0; /* should never be a valid address */
		1120	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1121
		1122	return cctx;
		1123	}
		1124
		1125	/* create a new cctx suitable as destination/running a perl interpreter */
		1126	static coro_cctx *
		1127	cctx_new_run ()
		1128	{
		1129	coro_cctx *cctx = cctx_new ();
868	void *stack_start;	1130	void *stack_start;
869	size_t stack_size;	1131	size_t stack_size;
870		1132
871	++cctx_count;
872
873	Newz (0, cctx, 1, coro_cctx);
874
875	#if HAVE_MMAP	1133	#if HAVE_MMAP
876
877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1134	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
878	/* mmap supposedly does allocate-on-write for us */	1135	/* mmap supposedly does allocate-on-write for us */
879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1136	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
880		1137
881	if (cctx->sptr != (void *)-1)	1138	if (cctx->sptr != (void *)-1)
882	{	1139	{
…		…
888	cctx->flags |= CC_MAPPED;	1145	cctx->flags |= CC_MAPPED;
889	}	1146	}
890	else	1147	else
891	#endif	1148	#endif
892	{	1149	{
893	cctx->ssize = coro_stacksize * (long)sizeof (long);	1150	cctx->ssize = cctx_stacksize * (long)sizeof (long);
894	New (0, cctx->sptr, coro_stacksize, long);	1151	New (0, cctx->sptr, cctx_stacksize, long);
895		1152
896	if (!cctx->sptr)	1153	if (!cctx->sptr)
897	{	1154	{
898	perror ("FATAL: unable to allocate stack for coroutine");	1155	perror ("FATAL: unable to allocate stack for coroutine");
899	_exit (EXIT_FAILURE);	1156	_exit (EXIT_FAILURE);
…		…
902	stack_start = cctx->sptr;	1159	stack_start = cctx->sptr;
903	stack_size = cctx->ssize;	1160	stack_size = cctx->ssize;
904	}	1161	}
905		1162
906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1163	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1164	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
908		1165
909	return cctx;	1166	return cctx;
910	}	1167	}
911		1168
912	static void	1169	static void
…		…
914	{	1171	{
915	if (!cctx)	1172	if (!cctx)
916	return;	1173	return;
917		1174
918	--cctx_count;	1175	--cctx_count;
		1176	coro_destroy (&cctx->cctx);
919		1177
		1178	/* coro_transfer creates new, empty cctx's */
		1179	if (cctx->sptr)
		1180	{
920	#if CORO_USE_VALGRIND	1181	#if CORO_USE_VALGRIND
921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1182	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
922	#endif	1183	#endif
923		1184
924	#if HAVE_MMAP	1185	#if HAVE_MMAP
925	if (cctx->flags & CC_MAPPED)	1186	if (cctx->flags & CC_MAPPED)
926	munmap (cctx->sptr, cctx->ssize);	1187	munmap (cctx->sptr, cctx->ssize);
927	else	1188	else
928	#endif	1189	#endif
929	Safefree (cctx->sptr);	1190	Safefree (cctx->sptr);
		1191	}
930		1192
931	Safefree (cctx);	1193	Safefree (cctx);
932	}	1194	}
		1195
		1196	/* wether this cctx should be destructed */
		1197	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
933		1198
934	static coro_cctx *	1199	static coro_cctx *
935	cctx_get (pTHX)	1200	cctx_get (pTHX)
936	{	1201	{
937	while (cctx_first)	1202	while (expect_true (cctx_first))
938	{	1203	{
939	coro_cctx *cctx = cctx_first;	1204	coro_cctx *cctx = cctx_first;
940	cctx_first = cctx->next;	1205	cctx_first = cctx->next;
941	--cctx_idle;	1206	--cctx_idle;
942		1207
943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1208	if (expect_true (!CCTX_EXPIRED (cctx)))
944	return cctx;	1209	return cctx;
945		1210
946	cctx_destroy (cctx);	1211	cctx_destroy (cctx);
947	}	1212	}
948		1213
949	return cctx_new ();	1214	return cctx_new_run ();
950	}	1215	}
951		1216
952	static void	1217	static void
953	cctx_put (coro_cctx *cctx)	1218	cctx_put (coro_cctx *cctx)
954	{	1219	{
		1220	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1221
955	/* free another cctx if overlimit */	1222	/* free another cctx if overlimit */
956	if (cctx_idle >= MAX_IDLE_CCTX)	1223	if (expect_false (cctx_idle >= cctx_max_idle))
957	{	1224	{
958	coro_cctx *first = cctx_first;	1225	coro_cctx *first = cctx_first;
959	cctx_first = first->next;	1226	cctx_first = first->next;
960	--cctx_idle;	1227	--cctx_idle;
961		1228
…		…
967	cctx_first = cctx;	1234	cctx_first = cctx;
968	}	1235	}
969		1236
970	/** coroutine switching *****************************************************/	1237	/** coroutine switching *****************************************************/
971		1238
972	static void NOINLINE	1239	static void
973	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1240	transfer_check (pTHX_ struct coro *prev, struct coro *next)
974	{	1241	{
975	if (prev != next)	1242	if (expect_true (prev != next))
976	{	1243	{
977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1244	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1245	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
979		1246
980	if (next->flags & CF_RUNNING)	1247	if (expect_false (next->flags & CF_RUNNING))
981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1248	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
982		1249
983	if (next->flags & CF_DESTROYED)	1250	if (expect_false (next->flags & CF_DESTROYED))
984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1251	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
985		1252
		1253	#if !PERL_VERSION_ATLEAST (5,10,0)
986	if (PL_lex_state != LEX_NOTPARSING)	1254	if (expect_false (PL_lex_state != LEX_NOTPARSING))
987	croak ("Coro::State::transfer called while parsing, but this is not supported");	1255	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1256	#endif
988	}	1257	}
989	}	1258	}
990		1259
991	/* always use the TRANSFER macro */	1260	/* always use the TRANSFER macro */
992	static void NOINLINE	1261	static void NOINLINE
993	transfer (pTHX_ struct coro *prev, struct coro *next)	1262	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
994	{	1263	{
995	dSTACKLEVEL;	1264	dSTACKLEVEL;
996		1265
997	/* sometimes transfer is only called to set idle_sp */	1266	/* sometimes transfer is only called to set idle_sp */
998	if (!next)	1267	if (expect_false (!next))
999	{	1268	{
1000	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1269	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1001	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1270	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1002	}	1271	}
1003	else if (prev != next)	1272	else if (expect_true (prev != next))
1004	{	1273	{
		1274	static volatile int has_throw;
1005	coro_cctx *prev__cctx;	1275	coro_cctx *prev__cctx;
1006		1276
1007	if (prev->flags & CF_NEW)	1277	if (expect_false (prev->flags & CF_NEW))
1008	{	1278	{
1009	/* create a new empty context */	1279	/* create a new empty/source context */
1010	Newz (0, prev->cctx, 1, coro_cctx);	1280	prev->cctx = cctx_new_empty ();
1011	prev->flags &= ~CF_NEW;	1281	prev->flags &= ~CF_NEW;
1012	prev->flags |= CF_RUNNING;	1282	prev->flags |= CF_RUNNING;
1013	}	1283	}
1014		1284
1015	prev->flags &= ~CF_RUNNING;	1285	prev->flags &= ~CF_RUNNING;
1016	next->flags |= CF_RUNNING;	1286	next->flags |= CF_RUNNING;
1017		1287
1018	LOCK;	1288	LOCK;
1019		1289
		1290	/* first get rid of the old state */
		1291	save_perl (aTHX_ prev);
		1292
1020	if (next->flags & CF_NEW)	1293	if (expect_false (next->flags & CF_NEW))
1021	{	1294	{
1022	/* need to start coroutine */	1295	/* need to start coroutine */
1023	next->flags &= ~CF_NEW;	1296	next->flags &= ~CF_NEW;
1024	/* first get rid of the old state */
1025	save_perl (aTHX_ prev);
1026	/* setup coroutine call */	1297	/* setup coroutine call */
1027	coro_setup (aTHX_ next);	1298	coro_setup (aTHX_ next);
1028	}	1299	}
1029	else	1300	else
1030	{
1031	/* coroutine already started */
1032	save_perl (aTHX_ prev);
1033	load_perl (aTHX_ next);	1301	load_perl (aTHX_ next);
1034	}
1035		1302
1036	prev__cctx = prev->cctx;	1303	prev__cctx = prev->cctx;
1037		1304
1038	/* possibly "free" the cctx */	1305	/* possibly "free" the cctx */
1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1306	if (expect_true (
		1307	prev__cctx->idle_sp == STACKLEVEL
		1308	&& !(prev__cctx->flags & CC_TRACE)
		1309	&& !force_cctx
		1310	))
1040	{	1311	{
1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1312	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1313	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1043		1314
1044	prev->cctx = 0;	1315	prev->cctx = 0;
1045		1316
		1317	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1318	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1319	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1320	if (!next->cctx)
		1321	next->cctx = cctx_get (aTHX);
		1322
1046	cctx_put (prev__cctx);	1323	cctx_put (prev__cctx);
1047	}	1324	}
1048		1325
1049	++next->usecount;	1326	++next->usecount;
1050		1327
1051	if (!next->cctx)	1328	if (expect_true (!next->cctx))
1052	next->cctx = cctx_get (aTHX);	1329	next->cctx = cctx_get (aTHX);
1053		1330
		1331	has_throw = !!next->throw;
		1332
1054	if (prev__cctx != next->cctx)	1333	if (expect_false (prev__cctx != next->cctx))
1055	{	1334	{
1056	prev__cctx->top_env = PL_top_env;	1335	prev__cctx->top_env = PL_top_env;
1057	PL_top_env = next->cctx->top_env;	1336	PL_top_env = next->cctx->top_env;
1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1337	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1059	}	1338	}
1060		1339
1061	free_coro_mortal (aTHX);	1340	free_coro_mortal (aTHX);
1062	UNLOCK;	1341	UNLOCK;
		1342
		1343	if (expect_false (has_throw))
		1344	{
		1345	struct coro *coro = SvSTATE (coro_current);
		1346
		1347	if (coro->throw)
		1348	{
		1349	SV *exception = coro->throw;
		1350	coro->throw = 0;
		1351	sv_setsv (ERRSV, exception);
		1352	croak (0);
		1353	}
		1354	}
1063	}	1355	}
1064	}	1356	}
1065		1357
1066	struct transfer_args	1358	struct transfer_args
1067	{	1359	{
1068	struct coro *prev, *next;	1360	struct coro *prev, *next;
1069	};	1361	};
1070		1362
1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1363	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1364	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1073		1365
1074	/** high level stuff ********************************************************/	1366	/** high level stuff ********************************************************/
1075		1367
1076	static int	1368	static int
…		…
1100	croak ("FATAL: tried to destroy currently running coroutine");	1392	croak ("FATAL: tried to destroy currently running coroutine");
1101		1393
1102	save_perl (aTHX_ &temp);	1394	save_perl (aTHX_ &temp);
1103	load_perl (aTHX_ coro);	1395	load_perl (aTHX_ coro);
1104		1396
1105	coro_destroy (aTHX_ coro);	1397	coro_destruct (aTHX_ coro);
1106		1398
1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1399	load_perl (aTHX_ &temp);
1108		1400
1109	coro->mainstack = 0;	1401	coro->slot = 0;
1110	}	1402	}
1111		1403
1112	cctx_destroy (coro->cctx);	1404	cctx_destroy (coro->cctx);
1113	SvREFCNT_dec (coro->args);	1405	SvREFCNT_dec (coro->args);
1114		1406
…		…
1170	{	1462	{
1171	dTHX;	1463	dTHX;
1172	struct transfer_args ta;	1464	struct transfer_args ta;
1173		1465
1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1466	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1175	TRANSFER (ta);	1467	TRANSFER (ta, 1);
1176	}	1468	}
1177		1469
1178	/** Coro ********************************************************************/	1470	/** Coro ********************************************************************/
1179		1471
1180	static void	1472	static void
…		…
1182	{	1474	{
1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1475	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1184	}	1476	}
1185		1477
1186	static SV *	1478	static SV *
1187	coro_deq (pTHX_ int min_prio)	1479	coro_deq (pTHX)
1188	{	1480	{
1189	int prio = PRIO_MAX - PRIO_MIN;	1481	int prio;
1190		1482
1191	min_prio -= PRIO_MIN;
1192	if (min_prio < 0)
1193	min_prio = 0;
1194
1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1483	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1196	if (AvFILLp (coro_ready [prio]) >= 0)	1484	if (AvFILLp (coro_ready [prio]) >= 0)
1197	return av_shift (coro_ready [prio]);	1485	return av_shift (coro_ready [prio]);
1198		1486
1199	return 0;	1487	return 0;
1200	}	1488	}
…		…
1202	static int	1490	static int
1203	api_ready (SV *coro_sv)	1491	api_ready (SV *coro_sv)
1204	{	1492	{
1205	dTHX;	1493	dTHX;
1206	struct coro *coro;	1494	struct coro *coro;
		1495	SV *sv_hook;
		1496	void (*xs_hook)(void);
1207		1497
1208	if (SvROK (coro_sv))	1498	if (SvROK (coro_sv))
1209	coro_sv = SvRV (coro_sv);	1499	coro_sv = SvRV (coro_sv);
1210		1500
1211	coro = SvSTATE (coro_sv);	1501	coro = SvSTATE (coro_sv);
…		…
1214	return 0;	1504	return 0;
1215		1505
1216	coro->flags |= CF_READY;	1506	coro->flags |= CF_READY;
1217		1507
1218	LOCK;	1508	LOCK;
		1509
		1510	sv_hook = coro_nready ? 0 : coro_readyhook;
		1511	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1512
1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1513	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1220	++coro_nready;	1514	++coro_nready;
		1515
1221	UNLOCK;	1516	UNLOCK;
		1517
		1518	if (sv_hook)
		1519	{
		1520	dSP;
		1521
		1522	ENTER;
		1523	SAVETMPS;
		1524
		1525	PUSHMARK (SP);
		1526	PUTBACK;
		1527	call_sv (sv_hook, G_DISCARD);
		1528	SPAGAIN;
		1529
		1530	FREETMPS;
		1531	LEAVE;
		1532	}
		1533
		1534	if (xs_hook)
		1535	xs_hook ();
1222		1536
1223	return 1;	1537	return 1;
1224	}	1538	}
1225		1539
1226	static int	1540	static int
…		…
1236	SV *prev_sv, *next_sv;	1550	SV *prev_sv, *next_sv;
1237		1551
1238	for (;;)	1552	for (;;)
1239	{	1553	{
1240	LOCK;	1554	LOCK;
1241	next_sv = coro_deq (aTHX_ PRIO_MIN);	1555	next_sv = coro_deq (aTHX);
1242		1556
1243	/* nothing to schedule: call the idle handler */	1557	/* nothing to schedule: call the idle handler */
1244	if (!next_sv)	1558	if (expect_false (!next_sv))
1245	{	1559	{
1246	dSP;	1560	dSP;
1247	UNLOCK;	1561	UNLOCK;
1248		1562
1249	ENTER;	1563	ENTER;
1250	SAVETMPS;	1564	SAVETMPS;
1251		1565
1252	PUSHMARK (SP);	1566	PUSHMARK (SP);
1253	PUTBACK;	1567	PUTBACK;
1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1568	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1569	SPAGAIN;
1255		1570
1256	FREETMPS;	1571	FREETMPS;
1257	LEAVE;	1572	LEAVE;
1258	continue;	1573	continue;
1259	}	1574	}
1260		1575
1261	ta->next = SvSTATE (next_sv);	1576	ta->next = SvSTATE (next_sv);
1262		1577
1263	/* cannot transfer to destroyed coros, skip and look for next */	1578	/* cannot transfer to destroyed coros, skip and look for next */
1264	if (ta->next->flags & CF_DESTROYED)	1579	if (expect_false (ta->next->flags & CF_DESTROYED))
1265	{	1580	{
1266	UNLOCK;	1581	UNLOCK;
1267	SvREFCNT_dec (next_sv);	1582	SvREFCNT_dec (next_sv);
1268	/* coro_nready is already taken care of by destroy */	1583	/* coro_nready is already taken care of by destroy */
1269	continue;	1584	continue;
…		…
1314	{	1629	{
1315	dTHX;	1630	dTHX;
1316	struct transfer_args ta;	1631	struct transfer_args ta;
1317		1632
1318	prepare_schedule (aTHX_ &ta);	1633	prepare_schedule (aTHX_ &ta);
1319	TRANSFER (ta);	1634	TRANSFER (ta, 1);
1320	}	1635	}
1321		1636
1322	static int	1637	static int
1323	api_cede (void)	1638	api_cede (void)
1324	{	1639	{
1325	dTHX;	1640	dTHX;
1326	struct transfer_args ta;	1641	struct transfer_args ta;
1327		1642
1328	prepare_cede (aTHX_ &ta);	1643	prepare_cede (aTHX_ &ta);
1329		1644
1330	if (ta.prev != ta.next)	1645	if (expect_true (ta.prev != ta.next))
1331	{	1646	{
1332	TRANSFER (ta);	1647	TRANSFER (ta, 1);
1333	return 1;	1648	return 1;
1334	}	1649	}
1335	else	1650	else
1336	return 0;	1651	return 0;
1337	}	1652	}
…		…
1342	dTHX;	1657	dTHX;
1343	struct transfer_args ta;	1658	struct transfer_args ta;
1344		1659
1345	if (prepare_cede_notself (aTHX_ &ta))	1660	if (prepare_cede_notself (aTHX_ &ta))
1346	{	1661	{
1347	TRANSFER (ta);	1662	TRANSFER (ta, 1);
1348	return 1;	1663	return 1;
1349	}	1664	}
1350	else	1665	else
1351	return 0;	1666	return 0;
1352	}	1667	}
…		…
1358	struct coro *coro = SvSTATE (coro_sv);	1673	struct coro *coro = SvSTATE (coro_sv);
1359		1674
1360	if (flags & CC_TRACE)	1675	if (flags & CC_TRACE)
1361	{	1676	{
1362	if (!coro->cctx)	1677	if (!coro->cctx)
1363	coro->cctx = cctx_new ();	1678	coro->cctx = cctx_new_run ();
1364	else if (!(coro->cctx->flags & CC_TRACE))	1679	else if (!(coro->cctx->flags & CC_TRACE))
1365	croak ("cannot enable tracing on coroutine with custom stack");	1680	croak ("cannot enable tracing on coroutine with custom stack");
1366		1681
1367	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1682	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1368	}	1683	}
…		…
1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1686	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1372		1687
1373	if (coro->flags & CF_RUNNING)	1688	if (coro->flags & CF_RUNNING)
1374	PL_runops = RUNOPS_DEFAULT;	1689	PL_runops = RUNOPS_DEFAULT;
1375	else	1690	else
1376	coro->runops = RUNOPS_DEFAULT;	1691	coro->slot->runops = RUNOPS_DEFAULT;
		1692	}
		1693	}
		1694
		1695	#if 0
		1696	static int
		1697	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1698	{
		1699	AV *padlist;
		1700	AV *av = (AV *)mg->mg_obj;
		1701
		1702	abort ();
		1703
		1704	return 0;
		1705	}
		1706
		1707	static MGVTBL coro_gensub_vtbl = {
		1708	0, 0, 0, 0,
		1709	coro_gensub_free
		1710	};
		1711	#endif
		1712
		1713	/*****************************************************************************/
		1714	/* PerlIO::cede */
		1715
		1716	typedef struct
		1717	{
		1718	PerlIOBuf base;
		1719	NV next, every;
		1720	} PerlIOCede;
		1721
		1722	static IV
		1723	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1724	{
		1725	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1726
		1727	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1728	self->next = nvtime () + self->every;
		1729
		1730	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1731	}
		1732
		1733	static SV *
		1734	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1735	{
		1736	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1737
		1738	return newSVnv (self->every);
		1739	}
		1740
		1741	static IV
		1742	PerlIOCede_flush (pTHX_ PerlIO *f)
		1743	{
		1744	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1745	double now = nvtime ();
		1746
		1747	if (now >= self->next)
1377	}	1748	{
		1749	api_cede ();
		1750	self->next = now + self->every;
		1751	}
		1752
		1753	return PerlIOBuf_flush (aTHX_ f);
1378	}	1754	}
		1755
		1756	static PerlIO_funcs PerlIO_cede =
		1757	{
		1758	sizeof(PerlIO_funcs),
		1759	"cede",
		1760	sizeof(PerlIOCede),
		1761	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1762	PerlIOCede_pushed,
		1763	PerlIOBuf_popped,
		1764	PerlIOBuf_open,
		1765	PerlIOBase_binmode,
		1766	PerlIOCede_getarg,
		1767	PerlIOBase_fileno,
		1768	PerlIOBuf_dup,
		1769	PerlIOBuf_read,
		1770	PerlIOBuf_unread,
		1771	PerlIOBuf_write,
		1772	PerlIOBuf_seek,
		1773	PerlIOBuf_tell,
		1774	PerlIOBuf_close,
		1775	PerlIOCede_flush,
		1776	PerlIOBuf_fill,
		1777	PerlIOBase_eof,
		1778	PerlIOBase_error,
		1779	PerlIOBase_clearerr,
		1780	PerlIOBase_setlinebuf,
		1781	PerlIOBuf_get_base,
		1782	PerlIOBuf_bufsiz,
		1783	PerlIOBuf_get_ptr,
		1784	PerlIOBuf_get_cnt,
		1785	PerlIOBuf_set_ptrcnt,
		1786	};
		1787
1379		1788
1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1789	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1381		1790
1382	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
1383		1792
1384	BOOT:	1793	BOOT:
1385	{	1794	{
1386	#ifdef USE_ITHREADS	1795	#ifdef USE_ITHREADS
1387	MUTEX_INIT (&coro_mutex);	1796	MUTEX_INIT (&coro_lock);
		1797	# if CORO_PTHREAD
		1798	coro_thx = PERL_GET_CONTEXT;
		1799	# endif
1388	#endif	1800	#endif
1389	BOOT_PAGESIZE;	1801	BOOT_PAGESIZE;
1390		1802
1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1803	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1804	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1805
		1806	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1807	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1808	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1809
		1810	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1811	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1812	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1393		1813
1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1814	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1395		1815
1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1816	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1817	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1402	main_top_env = PL_top_env;	1822	main_top_env = PL_top_env;
1403		1823
1404	while (main_top_env->je_prev)	1824	while (main_top_env->je_prev)
1405	main_top_env = main_top_env->je_prev;	1825	main_top_env = main_top_env->je_prev;
1406		1826
1407	coroapi.ver = CORO_API_VERSION;	1827	coroapi.ver = CORO_API_VERSION;
		1828	coroapi.rev = CORO_API_REVISION;
1408	coroapi.transfer = api_transfer;	1829	coroapi.transfer = api_transfer;
		1830
		1831	{
		1832	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1833
		1834	if (!svp) croak ("Time::HiRes is required");
		1835	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1836
		1837	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1838	}
1409		1839
1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1840	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1411	}	1841	}
1412		1842
1413	SV *	1843	SV *
1414	new (char *klass, ...)	1844	new (char *klass, ...)
1415	CODE:	1845	CODE:
1416	{	1846	{
1417	struct coro *coro;	1847	struct coro *coro;
		1848	MAGIC *mg;
1418	HV *hv;	1849	HV *hv;
1419	int i;	1850	int i;
1420		1851
1421	Newz (0, coro, 1, struct coro);	1852	Newz (0, coro, 1, struct coro);
1422	coro->args = newAV ();	1853	coro->args = newAV ();
…		…
1425	if (coro_first) coro_first->prev = coro;	1856	if (coro_first) coro_first->prev = coro;
1426	coro->next = coro_first;	1857	coro->next = coro_first;
1427	coro_first = coro;	1858	coro_first = coro;
1428		1859
1429	coro->hv = hv = newHV ();	1860	coro->hv = hv = newHV ();
1430	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1861	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1862	mg->mg_flags |= MGf_DUP;
1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1863	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1432		1864
		1865	av_extend (coro->args, items - 1);
1433	for (i = 1; i < items; i++)	1866	for (i = 1; i < items; i++)
1434	av_push (coro->args, newSVsv (ST (i)));	1867	av_push (coro->args, newSVsv (ST (i)));
1435	}	1868	}
1436	OUTPUT:	1869	OUTPUT:
1437	RETVAL	1870	RETVAL
…		…
1448	Coro::cede_notself = 4	1881	Coro::cede_notself = 4
1449	CODE:	1882	CODE:
1450	{	1883	{
1451	struct transfer_args ta;	1884	struct transfer_args ta;
1452		1885
		1886	PUTBACK;
1453	switch (ix)	1887	switch (ix)
1454	{	1888	{
1455	case 0:	1889	case 0:
1456	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1890	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1457	ta.next = 0;	1891	ta.next = 0;
1458	break;	1892	break;
1459		1893
1460	case 1:	1894	case 1:
1461	if (items != 2)	1895	if (items != 2)
1462	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1896	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1463		1897
1464	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1898	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1465	break;	1899	break;
1466		1900
1467	case 2:	1901	case 2:
…		…
1476	if (!prepare_cede_notself (aTHX_ &ta))	1910	if (!prepare_cede_notself (aTHX_ &ta))
1477	XSRETURN_EMPTY;	1911	XSRETURN_EMPTY;
1478		1912
1479	break;	1913	break;
1480	}	1914	}
		1915	SPAGAIN;
1481		1916
1482	BARRIER;	1917	BARRIER;
		1918	PUTBACK;
1483	TRANSFER (ta);	1919	TRANSFER (ta, 0);
1484		1920	SPAGAIN; /* might be the sp of a different coroutine now */
1485	if (GIMME_V != G_VOID && ta.next != ta.prev)	1921	/* be extra careful not to ever do anything after TRANSFER */
1486	XSRETURN_YES;
1487	}	1922	}
1488		1923
1489	bool	1924	bool
1490	_destroy (SV *coro_sv)	1925	_destroy (SV *coro_sv)
1491	CODE:	1926	CODE:
1492	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1927	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1493	OUTPUT:	1928	OUTPUT:
1494	RETVAL	1929	RETVAL
1495		1930
1496	void	1931	void
1497	_exit (code)	1932	_exit (int code)
1498	int code
1499	PROTOTYPE: $	1933	PROTOTYPE: $
1500	CODE:	1934	CODE:
1501	_exit (code);	1935	_exit (code);
1502		1936
1503	int	1937	int
1504	cctx_stacksize (int new_stacksize = 0)	1938	cctx_stacksize (int new_stacksize = 0)
1505	CODE:	1939	CODE:
1506	RETVAL = coro_stacksize;	1940	RETVAL = cctx_stacksize;
1507	if (new_stacksize)	1941	if (new_stacksize)
		1942	{
1508	coro_stacksize = new_stacksize;	1943	cctx_stacksize = new_stacksize;
		1944	++cctx_gen;
		1945	}
		1946	OUTPUT:
		1947	RETVAL
		1948
		1949	int
		1950	cctx_max_idle (int max_idle = 0)
		1951	CODE:
		1952	RETVAL = cctx_max_idle;
		1953	if (max_idle > 1)
		1954	cctx_max_idle = max_idle;
1509	OUTPUT:	1955	OUTPUT:
1510	RETVAL	1956	RETVAL
1511		1957
1512	int	1958	int
1513	cctx_count ()	1959	cctx_count ()
…		…
1537	call (Coro::State coro, SV *coderef)	1983	call (Coro::State coro, SV *coderef)
1538	ALIAS:	1984	ALIAS:
1539	eval = 1	1985	eval = 1
1540	CODE:	1986	CODE:
1541	{	1987	{
1542	if (coro->mainstack)	1988	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1543	{	1989	{
1544	struct coro temp;	1990	struct coro temp;
1545	Zero (&temp, 1, struct coro);
1546		1991
1547	if (!(coro->flags & CF_RUNNING))	1992	if (!(coro->flags & CF_RUNNING))
1548	{	1993	{
		1994	PUTBACK;
1549	save_perl (aTHX_ &temp);	1995	save_perl (aTHX_ &temp);
1550	load_perl (aTHX_ coro);	1996	load_perl (aTHX_ coro);
1551	}	1997	}
1552		1998
1553	{	1999	{
1554	dSP;	2000	dSP;
1555	ENTER;	2001	ENTER;
1556	SAVETMPS;	2002	SAVETMPS;
		2003	PUTBACK;
		2004	PUSHSTACK;
1557	PUSHMARK (SP);	2005	PUSHMARK (SP);
1558	PUTBACK;	2006
1559	if (ix)	2007	if (ix)
1560	eval_sv (coderef, 0);	2008	eval_sv (coderef, 0);
1561	else	2009	else
1562	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2010	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		2011
		2012	POPSTACK;
1563	SPAGAIN;	2013	SPAGAIN;
1564	FREETMPS;	2014	FREETMPS;
1565	LEAVE;	2015	LEAVE;
1566	PUTBACK;	2016	PUTBACK;
1567	}	2017	}
1568		2018
1569	if (!(coro->flags & CF_RUNNING))	2019	if (!(coro->flags & CF_RUNNING))
1570	{	2020	{
1571	save_perl (aTHX_ coro);	2021	save_perl (aTHX_ coro);
1572	load_perl (aTHX_ &temp);	2022	load_perl (aTHX_ &temp);
		2023	SPAGAIN;
1573	}	2024	}
1574	}	2025	}
1575	}	2026	}
1576		2027
1577	SV *	2028	SV *
…		…
1589		2040
1590	void	2041	void
1591	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2042	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1592		2043
1593	SV *	2044	SV *
1594	has_stack (Coro::State coro)	2045	has_cctx (Coro::State coro)
1595	PROTOTYPE: $	2046	PROTOTYPE: $
1596	CODE:	2047	CODE:
1597	RETVAL = boolSV (!!coro->cctx);	2048	RETVAL = boolSV (!!coro->cctx);
1598	OUTPUT:	2049	OUTPUT:
1599	RETVAL	2050	RETVAL
…		…
1604	CODE:	2055	CODE:
1605	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2056	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1606	OUTPUT:	2057	OUTPUT:
1607	RETVAL	2058	RETVAL
1608		2059
1609	IV	2060	UV
1610	rss (Coro::State coro)	2061	rss (Coro::State coro)
1611	PROTOTYPE: $	2062	PROTOTYPE: $
1612	ALIAS:	2063	ALIAS:
1613	usecount = 1	2064	usecount = 1
1614	CODE:	2065	CODE:
…		…
1618	case 1: RETVAL = coro->usecount; break;	2069	case 1: RETVAL = coro->usecount; break;
1619	}	2070	}
1620	OUTPUT:	2071	OUTPUT:
1621	RETVAL	2072	RETVAL
1622		2073
		2074	void
		2075	force_cctx ()
		2076	CODE:
		2077	struct coro *coro = SvSTATE (coro_current);
		2078	coro->cctx->idle_sp = 0;
		2079
		2080	void
		2081	swap_defsv (Coro::State self)
		2082	PROTOTYPE: $
		2083	ALIAS:
		2084	swap_defav = 1
		2085	CODE:
		2086	if (!self->slot)
		2087	croak ("cannot swap state with coroutine that has no saved state");
		2088	else
		2089	{
		2090	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2091	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2092
		2093	SV *tmp = *src; *src = *dst; *dst = tmp;
		2094	}
1623		2095
1624	MODULE = Coro::State PACKAGE = Coro	2096	MODULE = Coro::State PACKAGE = Coro
1625		2097
1626	BOOT:	2098	BOOT:
1627	{	2099	{
1628	int i;	2100	int i;
1629		2101
1630	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1631	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1632	av_async_pool = get_av ("Coro::async_pool", TRUE);	2102	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2103	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2104	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1633		2105
1634	coro_current = get_sv ("Coro::current", FALSE);	2106	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1635	SvREADONLY_on (coro_current);	2107	SvREADONLY_on (coro_current);
1636		2108
1637	coro_stash = gv_stashpv ("Coro", TRUE);	2109	coro_stash = gv_stashpv ("Coro", TRUE);
1638		2110
1639	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1640	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1641	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1642	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1645		2117
1646	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2118	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1647	coro_ready[i] = newAV ();	2119	coro_ready[i] = newAV ();
1648		2120
1649	{	2121	{
1650	SV *sv = perl_get_sv("Coro::API", 1);	2122	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2123	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1651		2124
1652	coroapi.schedule = api_schedule;	2125	coroapi.schedule = api_schedule;
1653	coroapi.cede = api_cede;	2126	coroapi.cede = api_cede;
1654	coroapi.cede_notself = api_cede_notself;	2127	coroapi.cede_notself = api_cede_notself;
1655	coroapi.ready = api_ready;	2128	coroapi.ready = api_ready;
…		…
1666	void	2139	void
1667	_set_current (SV *current)	2140	_set_current (SV *current)
1668	PROTOTYPE: $	2141	PROTOTYPE: $
1669	CODE:	2142	CODE:
1670	SvREFCNT_dec (SvRV (coro_current));	2143	SvREFCNT_dec (SvRV (coro_current));
1671	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2144	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2145
		2146	void
		2147	_set_readyhook (SV *hook)
		2148	PROTOTYPE: $
		2149	CODE:
		2150	LOCK;
		2151	SvREFCNT_dec (coro_readyhook);
		2152	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2153	UNLOCK;
1672		2154
1673	int	2155	int
1674	prio (Coro::State coro, int newprio = 0)	2156	prio (Coro::State coro, int newprio = 0)
1675	ALIAS:	2157	ALIAS:
1676	nice = 1	2158	nice = 1
…		…
1706	CODE:	2188	CODE:
1707	RETVAL = coro_nready;	2189	RETVAL = coro_nready;
1708	OUTPUT:	2190	OUTPUT:
1709	RETVAL	2191	RETVAL
1710		2192
		2193	void
		2194	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2195	PROTOTYPE: $;$
		2196	CODE:
		2197	SvREFCNT_dec (self->throw);
		2198	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2199
1711	# for async_pool speedup	2200	# for async_pool speedup
1712	void	2201	void
1713	_pool_1 (SV *cb)	2202	_pool_1 (SV *cb)
1714	CODE:	2203	CODE:
1715	{	2204	{
…		…
1719	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2208	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1720	AV *invoke_av;	2209	AV *invoke_av;
1721	int i, len;	2210	int i, len;
1722		2211
1723	if (!invoke)	2212	if (!invoke)
		2213	{
		2214	SV *old = PL_diehook;
		2215	PL_diehook = 0;
		2216	SvREFCNT_dec (old);
1724	croak ("\3terminate\2\n");	2217	croak ("\3async_pool terminate\2\n");
		2218	}
1725		2219
1726	SvREFCNT_dec (coro->saved_deffh);	2220	SvREFCNT_dec (coro->saved_deffh);
1727	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2221	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1728		2222
1729	hv_store (hv, "desc", sizeof ("desc") - 1,	2223	hv_store (hv, "desc", sizeof ("desc") - 1,
1730	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2224	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1731		2225
1732	invoke_av = (AV *)SvRV (invoke);	2226	invoke_av = (AV *)SvRV (invoke);
…		…
1736		2230
1737	if (len > 0)	2231	if (len > 0)
1738	{	2232	{
1739	av_fill (defav, len - 1);	2233	av_fill (defav, len - 1);
1740	for (i = 0; i < len; ++i)	2234	for (i = 0; i < len; ++i)
1741	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2235	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1742	}	2236	}
1743		2237
1744	SvREFCNT_dec (invoke);	2238	SvREFCNT_dec (invoke);
1745	}	2239	}
1746		2240
…		…
1753	sv_setsv (cb, &PL_sv_undef);	2247	sv_setsv (cb, &PL_sv_undef);
1754		2248
1755	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2249	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1756	coro->saved_deffh = 0;	2250	coro->saved_deffh = 0;
1757		2251
1758	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2252	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1759	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2253	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2254	{
		2255	SV *old = PL_diehook;
		2256	PL_diehook = 0;
		2257	SvREFCNT_dec (old);
1760	croak ("\3terminate\2\n");	2258	croak ("\3async_pool terminate\2\n");
		2259	}
1761		2260
1762	av_clear (GvAV (PL_defgv));	2261	av_clear (GvAV (PL_defgv));
1763	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2262	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1764	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2263	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1765		2264
…		…
1769	api_trace (coro_current, 0);	2268	api_trace (coro_current, 0);
1770		2269
1771	av_push (av_async_pool, newSVsv (coro_current));	2270	av_push (av_async_pool, newSVsv (coro_current));
1772	}	2271	}
1773		2272
		2273	#if 0
		2274
		2275	void
		2276	_generator_call (...)
		2277	PROTOTYPE: @
		2278	PPCODE:
		2279	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2280	xxxx
		2281	abort ();
		2282
		2283	SV *
		2284	gensub (SV *sub, ...)
		2285	PROTOTYPE: &;@
		2286	CODE:
		2287	{
		2288	struct coro *coro;
		2289	MAGIC *mg;
		2290	CV *xcv;
		2291	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2292	int i;
		2293
		2294	CvGV (ncv) = CvGV (cv);
		2295	CvFILE (ncv) = CvFILE (cv);
		2296
		2297	Newz (0, coro, 1, struct coro);
		2298	coro->args = newAV ();
		2299	coro->flags = CF_NEW;
		2300
		2301	av_extend (coro->args, items - 1);
		2302	for (i = 1; i < items; i++)
		2303	av_push (coro->args, newSVsv (ST (i)));
		2304
		2305	CvISXSUB_on (ncv);
		2306	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2307
		2308	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2309
		2310	CvXSUB (ncv) = CvXSUB (xcv);
		2311	CvANON_on (ncv);
		2312
		2313	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2314	RETVAL = newRV_noinc ((SV *)ncv);
		2315	}
		2316	OUTPUT:
		2317	RETVAL
		2318
		2319	#endif
		2320
1774		2321
1775	MODULE = Coro::State PACKAGE = Coro::AIO	2322	MODULE = Coro::State PACKAGE = Coro::AIO
1776		2323
1777	SV *	2324	void
1778	_get_state ()	2325	_get_state (SV *self)
1779	CODE:	2326	PPCODE:
1780	{	2327	{
1781	struct io_state *data;	2328	AV *defav = GvAV (PL_defgv);
1782		2329	AV *av = newAV ();
		2330	int i;
1783	RETVAL = newSV (sizeof (struct io_state));	2331	SV *data_sv = newSV (sizeof (struct io_state));
1784	data = (struct io_state *)SvPVX (RETVAL);	2332	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1785	SvCUR_set (RETVAL, sizeof (struct io_state));	2333	SvCUR_set (data_sv, sizeof (struct io_state));
1786	SvPOK_only (RETVAL);	2334	SvPOK_only (data_sv);
1787		2335
1788	data->errorno = errno;	2336	data->errorno = errno;
1789	data->laststype = PL_laststype;	2337	data->laststype = PL_laststype;
1790	data->laststatval = PL_laststatval;	2338	data->laststatval = PL_laststatval;
1791	data->statcache = PL_statcache;	2339	data->statcache = PL_statcache;
		2340
		2341	av_extend (av, AvFILLp (defav) + 1 + 1);
		2342
		2343	for (i = 0; i <= AvFILLp (defav); ++i)
		2344	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2345
		2346	av_push (av, data_sv);
		2347
		2348	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2349
		2350	api_ready (self);
1792	}	2351	}
1793	OUTPUT:
1794	RETVAL
1795		2352
1796	void	2353	void
1797	_set_state (char *data_)	2354	_set_state (SV *state)
1798	PROTOTYPE: $	2355	PROTOTYPE: $
1799	CODE:	2356	PPCODE:
1800	{	2357	{
1801	struct io_state *data = (void *)data_;	2358	AV *av = (AV *)SvRV (state);
		2359	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2360	int i;
1802		2361
1803	errno = data->errorno;	2362	errno = data->errorno;
1804	PL_laststype = data->laststype;	2363	PL_laststype = data->laststype;
1805	PL_laststatval = data->laststatval;	2364	PL_laststatval = data->laststatval;
1806	PL_statcache = data->statcache;	2365	PL_statcache = data->statcache;
1807	}
1808		2366
		2367	EXTEND (SP, AvFILLp (av));
		2368	for (i = 0; i < AvFILLp (av); ++i)
		2369	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2370	}
		2371
		2372
		2373	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2374
		2375	BOOT:
		2376	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2377
		2378	SV *
		2379	_schedule (...)
		2380	PROTOTYPE: @
		2381	CODE:
		2382	{
		2383	static int incede;
		2384
		2385	api_cede_notself ();
		2386
		2387	++incede;
		2388	while (coro_nready >= incede && api_cede ())
		2389	;
		2390
		2391	sv_setsv (sv_activity, &PL_sv_undef);
		2392	if (coro_nready >= incede)
		2393	{
		2394	PUSHMARK (SP);
		2395	PUTBACK;
		2396	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2397	SPAGAIN;
		2398	}
		2399
		2400	--incede;
		2401	}
		2402
		2403
		2404	MODULE = Coro::State PACKAGE = PerlIO::cede
		2405
		2406	BOOT:
		2407	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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