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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs.
Revision 1.164 by root, Tue Sep 25 01:47:23 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	|| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
77	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
78	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
79	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	|| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
80	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
82		97
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		99
85	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	103	#else
88	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
89	#endif	106	#endif
90		107
91	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
92		109
93	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
99	#else	116	#else
100	# define LOCK (void)0	117	# define LOCK (void)0
101	# define UNLOCK (void)0	118	# define UNLOCK (void)0
102	#endif	119	#endif
103		120
		121	/* helper storage struct for Coro::AIO */
104	struct io_state	122	struct io_state
105	{	123	{
106	int errorno;	124	int errorno;
107	I32 laststype;	125	I32 laststype;
108	int laststatval;	126	int laststatval;
109	Stat_t statcache;	127	Stat_t statcache;
110	};	128	};
111		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
112	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
113	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
114	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
115	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
116		141
117	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
118	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
119		144
120	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
121	typedef struct coro_cctx {	146	typedef struct coro_cctx {
122	struct coro_cctx *next;	147	struct coro_cctx *next;
123		148
124	/* the stack */	149	/* the stack */
125	void *sptr;	150	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
127		152
128	/* cpu state */	153	/* cpu state */
129	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	154	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		155	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
130	JMPENV *top_env;	156	JMPENV *top_env;
131	coro_context cctx;	157	coro_context cctx;
132		158
133	int inuse;
134
135	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
136	int valgrind_id;	160	int valgrind_id;
137	#endif	161	#endif
		162	char inuse, mapped;
138	} coro_cctx;	163	} coro_cctx;
139		164
140	enum {	165	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
143	CF_NEW = 0x0004, /* ahs never been switched to */	168	CF_NEW = 0x0004, /* has never been switched to */
		169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
144	};	170	};
145		171
146	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
147	struct coro {	173	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		182
157	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
158	AV *defav; /* @_ */	184	AV *defav; /* @_ */
159	SV *defsv; /* $_ */	185	SV *defsv; /* $_ */
160	SV *errsv; /* $@ */	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
161	SV *irssv; /* $/ */	188	SV *irssv; /* $/ */
162	SV *irssv_sv; /* real $/ cache */	189	SV *irssv_sv; /* real $/ cache */
163		190
164	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
165	# include "state.h"	192	# include "state.h"
166	#undef VAR	193	#undef VAR
167		194
168	/* coro process data */	195	/* coro process data */
169	int prio;	196	int prio;
		197
		198	/* linked list */
		199	struct coro *next, *prev;
		200	HV *hv; /* the perl hash associated with this coro, if any */
170	};	201	};
171		202
172	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
173	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
174		205
		206	/** Coro ********************************************************************/
		207
		208	#define PRIO_MAX 3
		209	#define PRIO_HIGH 1
		210	#define PRIO_NORMAL 0
		211	#define PRIO_LOW -1
		212	#define PRIO_IDLE -3
		213	#define PRIO_MIN -4
		214
		215	/* for Coro.pm */
		216	static SV *coro_current;
		217	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		218	static int coro_nready;
		219	static struct coro *coro_first;
		220
		221	/** lowlevel stuff **********************************************************/
		222
175	static AV *	223	static AV *
176	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
177	{	225	{
178	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
179	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
180		228
181	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
193		241
194	return newpadlist;	242	return newpadlist;
195	}	243	}
196		244
197	static void	245	static void
198	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
199	{	247	{
200	/* may be during global destruction */	248	/* may be during global destruction */
201	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
202	{	250	{
203	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
224	AV *padlist;	272	AV *padlist;
225	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
226		274
227	/* casting is fun. */	275	/* casting is fun. */
228	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
229	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
230		278
231	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
232		280
233	return 0;	281	return 0;
234	}	282	}
…		…
244	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
245	: 0	293	: 0
246		294
247	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
248	static void	296	static void
249	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
250	{	298	{
251	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
252	AV *av;	300	AV *av;
253		301
254	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
255	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
256	else	304	else
257	{	305	{
258	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
259	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
260	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
261	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
262	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
263	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
264	#else	312	#else
265	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
266	#endif	314	#endif
267	}	315	}
268	}	316	}
269		317
270	static void	318	static void
271	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
272	{	320	{
273	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
274	AV *av;	322	AV *av;
275		323
276	if (!mg)	324	if (!mg)
…		…
287	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
288		336
289	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
290	}	338	}
291		339
		340	/** load & save, init *******************************************************/
		341
292	#define SB do {	342	#define SB do {
293	#define SE } while (0)	343	#define SE } while (0)
294		344
295	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	345	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
296		346
297	static void	347	static void
298	load_perl (Coro__State c)	348	load_perl (pTHX_ Coro__State c)
299	{	349	{
300	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
301	# include "state.h"	351	# include "state.h"
302	#undef VAR	352	#undef VAR
303		353
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	356	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		357	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		358
307	if (c->irssv)	359	if (c->irssv)
308	{	360	{
309	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		362	{
310	SvREFCNT_dec (c->irssv);	363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
311	else	366	else
312	{	367	{
313	REPLACE_SV (PL_rs, c->irssv);	368	REPLACE_SV (PL_rs, c->irssv);
314	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
315	sv_setsv (c->irssv_sv, PL_rs);	370	sv_setsv (c->irssv_sv, PL_rs);
…		…
321	CV *cv;	376	CV *cv;
322		377
323	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
324	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
325	{	380	{
326	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
327	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
328	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
329	}	384	}
330		385
331	PUTBACK;	386	PUTBACK;
332	}	387	}
333	}	388	}
334		389
335	static void	390	static void
336	save_perl (Coro__State c)	391	save_perl (pTHX_ Coro__State c)
337	{	392	{
338	{	393	{
339	dSP;	394	dSP;
340	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
344	/*	399	/*
345	* the worst thing you can imagine happens first - we have to save	400	* the worst thing you can imagine happens first - we have to save
346	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
347	*/	402	*/
348		403
349	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
351	for (;;)	406	for (;;)
352	{	407	{
353	while (cxix >= 0)	408	while (cxix >= 0)
354	{	409	{
355	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
356		411
357	if (CxTYPE (cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
358	{	413	{
359	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
360		415
361	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
362	{	417	{
363	EXTEND (SP, 3);	418	EXTEND (SP, 3);
364
365	PUSHs ((SV *)CvPADLIST (cv));	419	PUSHs ((SV *)CvPADLIST (cv));
366	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
368		422
369	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
370	get_padlist (cv);	424	get_padlist (aTHX_ cv);
371	}	425	}
372	}	426	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE (cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	427	}
382		428
383	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
384	break;	430	break;
385		431
386	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
387	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
388	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
389	}	435	}
390		436
391	PUTBACK;	437	PUTBACK;
392	}	438	}
393		439
394	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
395	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	442	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		443	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
397	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		445
399	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
400	# include "state.h"	447	# include "state.h"
401	#undef VAR	448	#undef VAR
…		…
405	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
406	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
407	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
408	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
409	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
410	static void	460	static void
411	coro_init_stacks ()	461	coro_init_stacks (pTHX)
412	{	462	{
413	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	463	PL_curstackinfo = new_stackinfo(64, 6);
414	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
415	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
416	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
417		467
418	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
419	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
420	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
421		471
422	New(50,PL_tmps_stack,128,SV*);	472	New(50,PL_tmps_stack,64,SV*);
423	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
424	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
425	PL_tmps_max = 128;	475	PL_tmps_max = 64;
426		476
427	New(54,PL_markstack,32,I32);	477	New(54,PL_markstack,16,I32);
428	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
429	PL_markstack_max = PL_markstack + 32;	479	PL_markstack_max = PL_markstack + 16;
430		480
431	#ifdef SET_MARK_OFFSET	481	#ifdef SET_MARK_OFFSET
432	SET_MARK_OFFSET;	482	SET_MARK_OFFSET;
433	#endif	483	#endif
434		484
435	New(54,PL_scopestack,32,I32);	485	New(54,PL_scopestack,16,I32);
436	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
437	PL_scopestack_max = 32;	487	PL_scopestack_max = 16;
438		488
439	New(54,PL_savestack,64,ANY);	489	New(54,PL_savestack,64,ANY);
440	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
441	PL_savestack_max = 64;	491	PL_savestack_max = 64;
442		492
443	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
444	New(54,PL_retstack,16,OP*);	494	New(54,PL_retstack,4,OP*);
445	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
446	PL_retstack_max = 16;	496	PL_retstack_max = 4;
447	#endif	497	#endif
448	}	498	}
		499	#endif
449		500
450	/*	501	/*
451	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
452	*/	503	*/
453	static void	504	static void
454	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
455	{	506	{
456	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
457	{	508	{
458	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
459	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
460		512
461	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
462	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
463		516
		517	/* unwind all extra stacks */
464	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
465	}	522	}
466		523
467	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
468	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
469		526
470	while (PL_curstackinfo)	527	while (PL_curstackinfo)
471	{	528	{
472	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
473		530
474	{ /*D*//*remove*/
475	dSP;
476	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
477	PUTBACK; /* possibly superfluous */
478	}
479
480	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
481	{
482	dounwind (-1);/*D*//*remove*/
483	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
484	}
485		533
486	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
487	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
488	PL_curstackinfo = p;	536	PL_curstackinfo = p;
489	}	537	}
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	544	Safefree (PL_retstack);
497	#endif	545	#endif
498	}	546	}
499		547
		548	static size_t
		549	coro_rss (struct coro *coro)
		550	{
		551	size_t rss = sizeof (coro);
		552
		553	if (coro->mainstack)
		554	{
		555	if (coro->flags & CF_RUNNING)
		556	{
		557	#define VAR(name,type)coro->name = PL_ ## name;
		558	# include "state.h"
		559	#undef VAR
		560	}
		561
		562	rss += sizeof (coro->curstackinfo);
		563	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		564	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		565	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		566	rss += coro->tmps_max * sizeof (SV *);
		567	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		568	rss += coro->scopestack_max * sizeof (I32);
		569	rss += coro->savestack_max * sizeof (ANY);
		570
		571	#if !PERL_VERSION_ATLEAST (5,9,0)
		572	rss += coro->retstack_max * sizeof (OP *);
		573	#endif
		574	}
		575
		576	return rss;
		577	}
		578
		579	/** coroutine stack handling ************************************************/
		580
500	static void	581	static void
501	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
502	{	583	{
503	/*	584	/*
504	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
505	*/	586	*/
506
507	coro_init_stacks ();	587	coro_init_stacks (aTHX);
508		588
509	PL_curcop = &PL_compiling;	589	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
511	PL_curpm = 0;	592	PL_curpm = 0;
512	PL_localizing = 0;	593	PL_localizing = 0;
513	PL_dirty = 0;	594	PL_dirty = 0;
514	PL_restartop = 0;	595	PL_restartop = 0;
515		596
…		…
523	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	605	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
526		607
527	PUSHMARK (SP);	608	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	609	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	610	PUTBACK;
530	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	613	SPAGAIN;
533	}	614	}
534		615
535	ENTER; /* necessary e.g. for dounwind */	616	ENTER; /* necessary e.g. for dounwind */
536	}	617	}
537		618
538	static void	619	static void
539	free_coro_mortal ()	620	free_coro_mortal (pTHX)
540	{	621	{
541	if (coro_mortal)	622	if (coro_mortal)
542	{	623	{
543	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	625	coro_mortal = 0;
545	}	626	}
546	}	627	}
547		628
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	629	/* inject a fake call to Coro::State::_cctx_init into the execution */
		630	/* _cctx_init should be careful, as it could be called at almost any time */
		631	/* during execution of a perl program */
549	static void NOINLINE	632	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	634	{
552	dSP;	635	dSP;
553	LOGOP myop;	636	LOGOP myop;
554		637
555	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
…		…
564	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	649	SPAGAIN;
567	}	650	}
568		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
569	static void	655	static void
570	coro_run (void *arg)	656	coro_run (void *arg)
571	{	657	{
		658	dTHX;
		659
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	661	UNLOCK;
574		662
575	/*
576	* this is a _very_ stripped down perl interpreter ;)
577	*/
578	PL_top_env = &PL_start_env;	663	PL_top_env = &PL_start_env;
579		664
580	/* inject call to cctx_init */	665	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	666	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		667
583	/* somebody will hit me for both perl_run and PL_restartop */	668	/* somebody or something will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	669	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	670	perl_run (PL_curinterp);
586		671
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	672	/*
588	abort ();	673	* If perl-run returns we assume exit() was being called or the coro
		674	* fell off the end, which seems to be the only valid (non-bug)
		675	* reason for perl_run to return. We try to exit by jumping to the
		676	* bootstrap-time "top" top_env, as we cannot restore the "main"
		677	* coroutine as Coro has no such concept
		678	*/
		679	PL_top_env = main_top_env;
		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	681	}
590		682
591	static coro_cctx *	683	static coro_cctx *
592	cctx_new ()	684	cctx_new ()
593	{	685	{
594	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
595		689
596	++cctx_count;	690	++cctx_count;
597		691
598	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
599		693
600	#if HAVE_MMAP	694	#if HAVE_MMAP
601		695
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	698	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
605		699
606	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	701	{
611
612	# if STACKGUARD	702	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	704	# endif
		705	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		706	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		707	cctx->mapped = 1;
		708	}
		709	else
		710	#endif
		711	{
		712	cctx->ssize = coro_stacksize * (long)sizeof (long);
		713	New (0, cctx->sptr, coro_stacksize, long);
615		714
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	715	if (!cctx->sptr)
622	{	716	{
623	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
625	}	719	}
626		720
627	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
628		724
629	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	726	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		727
638	return cctx;	728	return cctx;
639	}	729	}
640		730
641	static void	731	static void
…		…
644	if (!cctx)	734	if (!cctx)
645	return;	735	return;
646		736
647	--cctx_count;	737	--cctx_count;
648		738
649	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	741	#endif
652		742
653	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
654	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
655	#else	746	else
		747	#endif
656	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
657	#endif
658		749
659	Safefree (cctx);	750	Safefree (cctx);
660	}	751	}
661		752
662	static coro_cctx *	753	static coro_cctx *
663	cctx_get ()	754	cctx_get (pTHX)
664	{	755	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	756	while (cctx_first)
668	{	757	{
669	cctx = cctx_first;	758	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	759	cctx_first = cctx->next;
671	--cctx_idle;	760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
672	}	766	}
673	else	767
674	{
675	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
677	}
678
679	return cctx;	769	return cctx_new ();
680	}	770	}
681		771
682	static void	772	static void
683	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
684	{	774	{
…		…
696	++cctx_idle;	786	++cctx_idle;
697	cctx->next = cctx_first;	787	cctx->next = cctx_first;
698	cctx_first = cctx;	788	cctx_first = cctx;
699	}	789	}
700		790
		791	/** coroutine switching *****************************************************/
		792
701	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	794	static void NOINLINE
703	transfer (struct coro *prev, struct coro *next)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
704	{	796	{
705	dSTACKLEVEL;	797	dSTACKLEVEL;
706		798
707	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	800	if (!next)
		801	{
709	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		803	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		804	}
710	else if (prev != next)	805	else if (prev != next)
711	{	806	{
712	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
713		808
714	if (prev->flags & CF_NEW)	809	if (prev->flags & CF_NEW)
…		…
725	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
726		821
727	if (next->flags & CF_RUNNING)	822	if (next->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
729		824
		825	if (next->flags & CF_DESTROYED)
		826	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		827
730	prev->flags &= ~CF_RUNNING;	828	prev->flags &= ~CF_RUNNING;
731	next->flags |= CF_RUNNING;	829	next->flags |= CF_RUNNING;
732		830
733	LOCK;	831	LOCK;
734		832
735	if (next->flags & CF_NEW)	833	if (next->flags & CF_NEW)
736	{	834	{
737	/* need to start coroutine */	835	/* need to start coroutine */
738	next->flags &= ~CF_NEW;	836	next->flags &= ~CF_NEW;
739	/* first get rid of the old state */	837	/* first get rid of the old state */
740	save_perl (prev);	838	save_perl (aTHX_ prev);
741	/* setup coroutine call */	839	/* setup coroutine call */
742	setup_coro (next);	840	setup_coro (aTHX_ next);
743	/* need a new stack */	841	/* need a new stack */
744	assert (!next->stack);	842	assert (!next->cctx);
745	}	843	}
746	else	844	else
747	{	845	{
748	/* coroutine already started */	846	/* coroutine already started */
749	save_perl (prev);	847	save_perl (aTHX_ prev);
750	load_perl (next);	848	load_perl (aTHX_ next);
751	}	849	}
752		850
753	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
754		852
755	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
756	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
757	{	855	{
758	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	856	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
759	assert (PL_top_env == prev__cctx->top_env);	857	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
760		858
761	prev->cctx = 0;	859	prev->cctx = 0;
762		860
763	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
764	prev__cctx->inuse = 0;	862	prev__cctx->inuse = 0;
765	}	863	}
766		864
767	if (!next->cctx)	865	if (!next->cctx)
768	{	866	{
769	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
770	assert (!next->cctx->inuse);	868	assert (!next->cctx->inuse);
771	next->cctx->inuse = 1;	869	next->cctx->inuse = 1;
772	}	870	}
773		871
774	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
…		…
776	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
777	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
779	}	877	}
780		878
781	free_coro_mortal ();	879	free_coro_mortal (aTHX);
782
783	UNLOCK;	880	UNLOCK;
784	}	881	}
785	}	882	}
786		883
787	struct transfer_args	884	struct transfer_args
788	{	885	{
789	struct coro *prev, *next;	886	struct coro *prev, *next;
790	};	887	};
791		888
792	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
793		890
		891	/** high level stuff ********************************************************/
		892
794	static void	893	static int
795	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
796	{	895	{
797	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
798	return;	897	return 0;
		898
		899	coro->flags |= CF_DESTROYED;
		900
		901	if (coro->flags & CF_READY)
		902	{
		903	/* reduce nready, as destroying a ready coro effectively unreadies it */
		904	/* alternative: look through all ready queues and remove the coro */
		905	LOCK;
		906	--coro_nready;
		907	UNLOCK;
		908	}
		909	else
		910	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
799		911
800	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	913	{
802	struct coro temp;	914	struct coro temp;
		915
		916	assert (!(coro->flags & CF_RUNNING));
		917
803	Zero (&temp, 1, struct coro);	918	Zero (&temp, 1, struct coro);
804	temp.save = CORO_SAVE_ALL;	919	temp.save = CORO_SAVE_ALL;
805		920
806	if (coro->flags & CF_RUNNING)	921	if (coro->flags & CF_RUNNING)
807	croak ("FATAL: tried to destroy currently running coroutine");	922	croak ("FATAL: tried to destroy currently running coroutine");
808		923
809	save_perl (&temp);	924	save_perl (aTHX_ &temp);
810	load_perl (coro);	925	load_perl (aTHX_ coro);
811		926
812	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
813		928
814	load_perl (&temp); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
815		930
816	coro->mainstack = 0;	931	coro->mainstack = 0;
817	}	932	}
818		933
819	cctx_destroy (coro->cctx);	934	cctx_destroy (coro->cctx);
820	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
821	Safefree (coro);	936
		937	if (coro->next) coro->next->prev = coro->prev;
		938	if (coro->prev) coro->prev->next = coro->next;
		939	if (coro == coro_first) coro_first = coro->next;
		940
		941	return 1;
822	}	942	}
823		943
824	static int	944	static int
825	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
826	{	946	{
827	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
828	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
829		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
830	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
831		957
832	return 0;	958	return 0;
833	}	959	}
834		960
835	static int	961	static int
…		…
842	return 0;	968	return 0;
843	}	969	}
844		970
845	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
846	0, 0, 0, 0,	972	0, 0, 0, 0,
847	coro_state_clear,	973	coro_state_free,
848	0,	974	0,
849	#ifdef MGf_DUP	975	#ifdef MGf_DUP
850	coro_state_dup,	976	coro_state_dup,
851	#else	977	#else
852	# define MGf_DUP 0	978	# define MGf_DUP 0
853	#endif	979	#endif
854	};	980	};
855		981
856	static struct coro *	982	static struct coro *
857	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
858	{	984	{
859	HV *stash;	985	HV *stash;
860	MAGIC *mg;	986	MAGIC *mg;
861		987
862	if (SvROK (coro))	988	if (SvROK (coro))
…		…
868	/* very slow, but rare, check */	994	/* very slow, but rare, check */
869	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
870	croak ("Coro::State object required");	996	croak ("Coro::State object required");
871	}	997	}
872		998
873	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
874	assert (mg->mg_type == PERL_MAGIC_ext);
875	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
876	}	1001	}
877		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
878	static void	1005	static void
879	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1006	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
880	{	1007	{
881	ta->prev = SvSTATE (prev_sv);	1008	ta->prev = SvSTATE (prev_sv);
882	ta->next = SvSTATE (next_sv);	1009	ta->next = SvSTATE (next_sv);
883	}	1010	}
884		1011
885	static void	1012	static void
886	api_transfer (SV *prev_sv, SV *next_sv)	1013	api_transfer (SV *prev_sv, SV *next_sv)
887	{	1014	{
		1015	dTHX;
888	struct transfer_args ta;	1016	struct transfer_args ta;
889		1017
890	prepare_transfer (&ta, prev_sv, next_sv);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
891	TRANSFER (ta);	1019	TRANSFER (ta);
892	}	1020	}
893		1021
894	static int	1022	static int
895	api_save (SV *coro_sv, int new_save)	1023	api_save (SV *coro_sv, int new_save)
896	{	1024	{
		1025	dTHX;
897	struct coro *coro = SvSTATE (coro_sv);	1026	struct coro *coro = SvSTATE (coro_sv);
898	int old_save = coro->save;	1027	int old_save = coro->save;
899		1028
900	if (new_save >= 0)	1029	if (new_save >= 0)
901	coro->save = new_save;	1030	coro->save = new_save;
…		…
903	return old_save;	1032	return old_save;
904	}	1033	}
905		1034
906	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
907		1036
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	1037	static void
921	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
922	{	1039	{
923	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
924	coro_nready++;
925	}	1041	}
926		1042
927	static SV *	1043	static SV *
928	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
929	{	1045	{
930	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
931		1047
932	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
933	if (min_prio < 0)	1049	if (min_prio < 0)
934	min_prio = 0;	1050	min_prio = 0;
935		1051
936	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
937	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
938	{
939	coro_nready--;
940	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
941	}
942		1055
943	return 0;	1056	return 0;
944	}	1057	}
945		1058
946	static int	1059	static int
947	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
948	{	1061	{
		1062	dTHX;
949	struct coro *coro;	1063	struct coro *coro;
950		1064
951	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
952	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
953		1067
954	coro = SvSTATE (coro_sv);	1068	coro = SvSTATE (coro_sv);
955		1069
956	if (coro->flags & CF_READY)	1070	if (coro->flags & CF_READY)
957	return 0;	1071	return 0;
958		1072
959	#if 0 /* this is actually harmless */
960	if (coro->flags & CF_RUNNING)
961	croak ("Coro::ready called on currently running coroutine");
962	#endif
963
964	coro->flags |= CF_READY;	1073	coro->flags |= CF_READY;
965		1074
966	LOCK;	1075	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
968	UNLOCK;	1078	UNLOCK;
969		1079
970	return 1;	1080	return 1;
971	}	1081	}
972		1082
973	static int	1083	static int
974	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
975	{	1085	{
		1086	dTHX;
976	return !!SvSTATE (coro_sv)->flags & CF_READY;	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1088	}
978		1089
979	static void	1090	static void
980	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1092	{
982	SV *prev, *next;	1093	SV *prev_sv, *next_sv;
983		1094
984	for (;;)	1095	for (;;)
985	{	1096	{
986	LOCK;	1097	LOCK;
987	next = coro_deq (PRIO_MIN);	1098	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1099
		1100	/* nothing to schedule: call the idle handler */
		1101	if (!next_sv)
		1102	{
		1103	dSP;
		1104	UNLOCK;
		1105
		1106	ENTER;
		1107	SAVETMPS;
		1108
		1109	PUSHMARK (SP);
		1110	PUTBACK;
		1111	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1112
		1113	FREETMPS;
		1114	LEAVE;
		1115	continue;
		1116	}
		1117
		1118	ta->next = SvSTATE (next_sv);
		1119
		1120	/* cannot transfer to destroyed coros, skip and look for next */
		1121	if (ta->next->flags & CF_DESTROYED)
		1122	{
		1123	UNLOCK;
		1124	SvREFCNT_dec (next_sv);
		1125	/* coro_nready is already taken care of by destroy */
		1126	continue;
		1127	}
		1128
		1129	--coro_nready;
988	UNLOCK;	1130	UNLOCK;
989
990	if (next)
991	break;	1131	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1132	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1133
1011	/* free this only after the transfer */	1134	/* free this only after the transfer */
1012	LOCK;	1135	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();	1136	SvRV_set (coro_current, next_sv);
1014	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);	1137	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);
1022		1138
1023	assert (ta->next->flags & CF_READY);	1139	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1140	ta->next->flags &= ~CF_READY;
1025	}
1026		1141
		1142	LOCK;
		1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
		1145	UNLOCK;
		1146	}
		1147
1027	static void	1148	static void
1028	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1150	{
1030	api_ready (coro_current);	1151	api_ready (coro_current);
1031
1032	prepare_schedule (ta);	1152	prepare_schedule (aTHX_ ta);
		1153	}
		1154
		1155	static int
		1156	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1157	{
		1158	if (coro_nready)
		1159	{
		1160	SV *prev = SvRV (coro_current);
		1161	prepare_schedule (aTHX_ ta);
		1162	api_ready (prev);
		1163	return 1;
		1164	}
		1165	else
		1166	return 0;
1033	}	1167	}
1034		1168
1035	static void	1169	static void
1036	api_schedule (void)	1170	api_schedule (void)
1037	{	1171	{
		1172	dTHX;
1038	struct transfer_args ta;	1173	struct transfer_args ta;
1039		1174
1040	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1041	TRANSFER (ta);	1176	TRANSFER (ta);
1042	}	1177	}
1043		1178
1044	static void	1179	static int
1045	api_cede (void)	1180	api_cede (void)
1046	{	1181	{
		1182	dTHX;
1047	struct transfer_args ta;	1183	struct transfer_args ta;
1048		1184
1049	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1050	TRANSFER (ta);	1189	TRANSFER (ta);
		1190	return 1;
		1191	}
		1192	else
		1193	return 0;
		1194	}
		1195
		1196	static int
		1197	api_cede_notself (void)
		1198	{
		1199	dTHX;
		1200	struct transfer_args ta;
		1201
		1202	if (prepare_cede_notself (aTHX_ &ta))
		1203	{
		1204	TRANSFER (ta);
		1205	return 1;
		1206	}
		1207	else
		1208	return 0;
1051	}	1209	}
1052		1210
1053	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1054		1212
1055	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1065		1223
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1227	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1228	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1229	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1071		1231
1072	main_mainstack = PL_mainstack;	1232	main_mainstack = PL_mainstack;
		1233	main_top_env = PL_top_env;
		1234
		1235	while (main_top_env->je_prev)
		1236	main_top_env = main_top_env->je_prev;
1073		1237
1074	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1075	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1076		1240
1077	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1085	HV *hv;	1249	HV *hv;
1086	int i;	1250	int i;
1087		1251
1088	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1089	coro->args = newAV ();	1253	coro->args = newAV ();
1090	coro->save = CORO_SAVE_ALL;	1254	coro->save = CORO_SAVE_DEF;
1091	coro->flags = CF_NEW;	1255	coro->flags = CF_NEW;
1092		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1093	hv = newHV ();	1261	coro->hv = hv = newHV ();
1094	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1262	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1095	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1096		1264
1097	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1098	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
…		…
1105	CODE:	1273	CODE:
1106	RETVAL = api_save (coro, new_save);	1274	RETVAL = api_save (coro, new_save);
1107	OUTPUT:	1275	OUTPUT:
1108	RETVAL	1276	RETVAL
1109		1277
		1278	int
		1279	save_also (SV *coro_sv, int save_also)
		1280	CODE:
		1281	{
		1282	struct coro *coro = SvSTATE (coro_sv);
		1283	RETVAL = coro->save;
		1284	coro->save |= save_also;
		1285	}
		1286	OUTPUT:
		1287	RETVAL
		1288
1110	void	1289	void
1111	_set_stacklevel (...)	1290	_set_stacklevel (...)
1112	ALIAS:	1291	ALIAS:
1113	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1114	Coro::schedule = 2	1293	Coro::schedule = 2
1115	Coro::cede = 3	1294	Coro::cede = 3
		1295	Coro::cede_notself = 4
1116	CODE:	1296	CODE:
1117	{	1297	{
1118	struct transfer_args ta;	1298	struct transfer_args ta;
1119		1299
1120	switch (ix)	1300	switch (ix)
…		…
1126		1306
1127	case 1:	1307	case 1:
1128	if (items != 2)	1308	if (items != 2)
1129	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1130		1310
1131	prepare_transfer (&ta, ST (0), ST (1));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1132	break;	1312	break;
1133		1313
1134	case 2:	1314	case 2:
1135	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1136	break;	1316	break;
1137		1317
1138	case 3:	1318	case 3:
1139	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
		1320	break;
		1321
		1322	case 4:
		1323	if (!prepare_cede_notself (aTHX_ &ta))
		1324	XSRETURN_EMPTY;
		1325
1140	break;	1326	break;
1141	}	1327	}
1142		1328
		1329	BARRIER;
1143	TRANSFER (ta);	1330	TRANSFER (ta);
1144	}
1145		1331
1146	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1147	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1148	CODE:	1338	CODE:
1149	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1150	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1151		1341	RETVAL
1152	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1153
1154	++coro_src->refcnt;
1155	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1156	}
1157		1342
1158	void	1343	void
1159	_exit (code)	1344	_exit (code)
1160	int code	1345	int code
1161	PROTOTYPE: $	1346	PROTOTYPE: $
1162	CODE:	1347	CODE:
1163	_exit (code);	1348	_exit (code);
1164		1349
1165	int	1350	int
		1351	cctx_stacksize (int new_stacksize = 0)
		1352	CODE:
		1353	RETVAL = coro_stacksize;
		1354	if (new_stacksize)
		1355	coro_stacksize = new_stacksize;
		1356	OUTPUT:
		1357	RETVAL
		1358
		1359	int
1166	cctx_count ()	1360	cctx_count ()
1167	CODE:	1361	CODE:
1168	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1169	OUTPUT:	1363	OUTPUT:
1170	RETVAL	1364	RETVAL
…		…
1174	CODE:	1368	CODE:
1175	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1176	OUTPUT:	1370	OUTPUT:
1177	RETVAL	1371	RETVAL
1178		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	call (Coro::State coro, SV *coderef)
		1385	ALIAS:
		1386	eval = 1
		1387	CODE:
		1388	{
		1389	if (coro->mainstack)
		1390	{
		1391	struct coro temp;
		1392	Zero (&temp, 1, struct coro);
		1393	temp.save = CORO_SAVE_ALL;
		1394
		1395	if (!(coro->flags & CF_RUNNING))
		1396	{
		1397	save_perl (aTHX_ &temp);
		1398	load_perl (aTHX_ coro);
		1399	}
		1400
		1401	{
		1402	dSP;
		1403	ENTER;
		1404	SAVETMPS;
		1405	PUSHMARK (SP);
		1406	PUTBACK;
		1407	if (ix)
		1408	eval_sv (coderef, 0);
		1409	else
		1410	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1411	SPAGAIN;
		1412	FREETMPS;
		1413	LEAVE;
		1414	PUTBACK;
		1415	}
		1416
		1417	if (!(coro->flags & CF_RUNNING))
		1418	{
		1419	save_perl (aTHX_ coro);
		1420	load_perl (aTHX_ &temp);
		1421	}
		1422	}
		1423	}
		1424
		1425	SV *
		1426	is_ready (Coro::State coro)
		1427	PROTOTYPE: $
		1428	ALIAS:
		1429	is_ready = CF_READY
		1430	is_running = CF_RUNNING
		1431	is_new = CF_NEW
		1432	is_destroyed = CF_DESTROYED
		1433	CODE:
		1434	RETVAL = boolSV (coro->flags & ix);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	SV *
		1439	has_stack (Coro::State coro)
		1440	PROTOTYPE: $
		1441	CODE:
		1442	RETVAL = boolSV (!!coro->cctx);
		1443	OUTPUT:
		1444	RETVAL
		1445
		1446	IV
		1447	rss (Coro::State coro)
		1448	PROTOTYPE: $
		1449	CODE:
		1450	RETVAL = coro_rss (coro);
		1451	OUTPUT:
		1452	RETVAL
		1453
		1454
1179	MODULE = Coro::State PACKAGE = Coro	1455	MODULE = Coro::State PACKAGE = Coro
1180		1456
1181	BOOT:	1457	BOOT:
1182	{	1458	{
1183	int i;	1459	int i;
		1460
		1461	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1462	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1463	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1464
		1465	coro_current = get_sv ("Coro::current", FALSE);
		1466	SvREADONLY_on (coro_current);
1184		1467
1185	coro_stash = gv_stashpv ("Coro", TRUE);	1468	coro_stash = gv_stashpv ("Coro", TRUE);
1186		1469
1187	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1470	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1188	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1471	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1189	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1472	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1190	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1473	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1191	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1474	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1192	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1475	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1193		1476
1194	coro_current = get_sv ("Coro::current", FALSE);
1195	SvREADONLY_on (coro_current);
1196
1197	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1477	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1198	coro_ready[i] = newAV ();	1478	coro_ready[i] = newAV ();
1199		1479
1200	{	1480	{
1201	SV *sv = perl_get_sv("Coro::API", 1);	1481	SV *sv = perl_get_sv("Coro::API", 1);
1202		1482
1203	coroapi.schedule = api_schedule;	1483	coroapi.schedule = api_schedule;
1204	coroapi.save = api_save;	1484	coroapi.save = api_save;
1205	coroapi.cede = api_cede;	1485	coroapi.cede = api_cede;
		1486	coroapi.cede_notself = api_cede_notself;
1206	coroapi.ready = api_ready;	1487	coroapi.ready = api_ready;
1207	coroapi.is_ready = api_is_ready;	1488	coroapi.is_ready = api_is_ready;
1208	coroapi.nready = &coro_nready;	1489	coroapi.nready = &coro_nready;
1209	coroapi.current = coro_current;	1490	coroapi.current = coro_current;
1210		1491
1211	GCoroAPI = &coroapi;	1492	GCoroAPI = &coroapi;
1212	sv_setiv (sv, (IV)&coroapi);	1493	sv_setiv (sv, (IV)&coroapi);
1213	SvREADONLY_on (sv);	1494	SvREADONLY_on (sv);
1214	}	1495	}
…		…
1230	RETVAL = coro->prio;	1511	RETVAL = coro->prio;
1231		1512
1232	if (items > 1)	1513	if (items > 1)
1233	{	1514	{
1234	if (ix)	1515	if (ix)
1235	newprio += coro->prio;	1516	newprio = coro->prio - newprio;
1236		1517
1237	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1518	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1238	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1519	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1239		1520
1240	coro->prio = newprio;	1521	coro->prio = newprio;
1241	}	1522	}
1242	}	1523	}
		1524	OUTPUT:
		1525	RETVAL
1243		1526
1244	SV *	1527	SV *
1245	ready (SV *self)	1528	ready (SV *self)
1246	PROTOTYPE: $	1529	PROTOTYPE: $
1247	CODE:	1530	CODE:
1248	RETVAL = boolSV (api_ready (self));	1531	RETVAL = boolSV (api_ready (self));
1249	OUTPUT:	1532	OUTPUT:
1250	RETVAL	1533	RETVAL
1251		1534
1252	SV *
1253	is_ready (SV *self)
1254	PROTOTYPE: $
1255	CODE:
1256	RETVAL = boolSV (api_is_ready (self));
1257	OUTPUT:
1258	RETVAL
1259
1260	int	1535	int
1261	nready (...)	1536	nready (...)
1262	PROTOTYPE:	1537	PROTOTYPE:
1263	CODE:	1538	CODE:
1264	RETVAL = coro_nready;	1539	RETVAL = coro_nready;
1265	OUTPUT:	1540	OUTPUT:
1266	RETVAL	1541	RETVAL
1267		1542
		1543	# for async_pool speedup
		1544	void
		1545	_pool_1 (SV *cb)
		1546	CODE:
		1547	{
		1548	int i, len;
		1549	HV *hv = (HV *)SvRV (coro_current);
		1550	AV *defav = GvAV (PL_defgv);
		1551	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1552	AV *invoke_av;
		1553
		1554	if (!invoke)
		1555	croak ("\3terminate\2\n");
		1556
		1557	hv_store (hv, "desc", sizeof ("desc") - 1,
		1558	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1559
		1560	invoke_av = (AV *)SvRV (invoke);
		1561	len = av_len (invoke_av);
		1562
		1563	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1564
		1565	if (len > 0)
		1566	{
		1567	av_fill (defav, len - 1);
		1568	for (i = 0; i < len; ++i)
		1569	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1570	}
		1571
		1572	SvREFCNT_dec (invoke);
		1573	}
		1574
		1575	void
		1576	_pool_2 (SV *cb)
		1577	CODE:
		1578	{
		1579	struct coro *coro = SvSTATE (coro_current);
		1580
		1581	sv_setsv (cb, &PL_sv_undef);
		1582
		1583	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1584	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1585	croak ("\3terminate\2\n");
		1586
		1587	av_clear (GvAV (PL_defgv));
		1588	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1589	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1590	coro->save = CORO_SAVE_DEF;
		1591	coro->prio = 0;
		1592	av_push (av_async_pool, newSVsv (coro_current));
		1593	}
		1594
		1595
1268	MODULE = Coro::State PACKAGE = Coro::AIO	1596	MODULE = Coro::State PACKAGE = Coro::AIO
1269		1597
1270	SV *	1598	SV *
1271	_get_state ()	1599	_get_state ()
1272	CODE:	1600	CODE:

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