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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.160 by root, Sat Sep 22 22:39:15 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	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	11	#include <stdio.h>
49	#include <errno.h>	12	#include <errno.h>
50	#include <assert.h>	13	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		14
60	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
61	# include <unistd.h>	16	# include <unistd.h>
62	# include <sys/mman.h>	17	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
78	#else	33	#else
79	# define PAGESIZE 0	34	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
81	#endif	36	#endif
82		37
83	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
85	* 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. */
86	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
88		97
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		99
91	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	103	#else
94	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
95	#endif	106	#endif
96		107
97	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
98		109
99	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
105	#else	116	#else
106	# define LOCK (void)0	117	# define LOCK (void)0
107	# define UNLOCK (void)0	118	# define UNLOCK (void)0
108	#endif	119	#endif
109		120
		121	/* helper storage struct for Coro::AIO */
110	struct io_state	122	struct io_state
111	{	123	{
112	int errorno;	124	int errorno;
113	I32 laststype;	125	I32 laststype;
114	int laststatval;	126	int laststatval;
115	Stat_t statcache;	127	Stat_t statcache;
116	};	128	};
117		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
119	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;
120	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
121	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;
122		141
123	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
124	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
125		144
126	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	146	typedef struct coro_cctx {
128	struct coro_cctx *next;	147	struct coro_cctx *next;
129		148
130	/* the stack */	149	/* the stack */
131	void *sptr;	150	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
133		152
134	/* cpu state */	153	/* cpu state */
135	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 */
136	JMPENV *top_env;	156	JMPENV *top_env;
137	coro_context cctx;	157	coro_context cctx;
138		158
139	int inuse;
140
141	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
142	int valgrind_id;	160	int valgrind_id;
143	#endif	161	#endif
		162	char inuse, mapped;
144	} coro_cctx;	163	} coro_cctx;
145		164
146	enum {	165	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
149	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 */
150	};	170	};
151		171
152	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
153	struct coro {	173	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
…		…
162		182
163	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
164	AV *defav; /* @_ */	184	AV *defav; /* @_ */
165	SV *defsv; /* $_ */	185	SV *defsv; /* $_ */
166	SV *errsv; /* $@ */	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
167	SV *irssv; /* $/ */	188	SV *irssv; /* $/ */
168	SV *irssv_sv; /* real $/ cache */	189	SV *irssv_sv; /* real $/ cache */
169		190
170	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
171	# include "state.h"	192	# include "state.h"
172	#undef VAR	193	#undef VAR
173		194
174	/* coro process data */	195	/* coro process data */
175	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 */
176	};	201	};
177		202
178	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
180		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
181	static AV *	223	static AV *
182	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
183	{	225	{
184	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
185	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
186		228
187	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
199		241
200	return newpadlist;	242	return newpadlist;
201	}	243	}
202		244
203	static void	245	static void
204	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
205	{	247	{
206	/* may be during global destruction */	248	/* may be during global destruction */
207	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
208	{	250	{
209	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	272	AV *padlist;
231	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
232		274
233	/* casting is fun. */	275	/* casting is fun. */
234	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
236		278
237	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
238		280
239	return 0;	281	return 0;
240	}	282	}
…		…
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
251	: 0	293	: 0
252		294
253	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
254	static void	296	static void
255	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
256	{	298	{
257	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
258	AV *av;	300	AV *av;
259		301
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	304	else
263	{	305	{
264	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
270	#else	312	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	314	#endif
273	}	315	}
274	}	316	}
275		317
276	static void	318	static void
277	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
278	{	320	{
279	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
280	AV *av;	322	AV *av;
281		323
282	if (!mg)	324	if (!mg)
…		…
293	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
294		336
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	338	}
297		339
		340	/** load & save, init *******************************************************/
		341
298	#define SB do {	342	#define SB do {
299	#define SE } while (0)	343	#define SE } while (0)
300		344
301	#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
302		346
303	static void	347	static void
304	load_perl (Coro__State c)	348	load_perl (pTHX_ Coro__State c)
305	{	349	{
306	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
307	# include "state.h"	351	# include "state.h"
308	#undef VAR	352	#undef VAR
309		353
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	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
313	if (c->irssv)	359	if (c->irssv)
314	{	360	{
315	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		362	{
316	SvREFCNT_dec (c->irssv);	363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
317	else	366	else
318	{	367	{
319	REPLACE_SV (PL_rs, c->irssv);	368	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);	370	sv_setsv (c->irssv_sv, PL_rs);
…		…
327	CV *cv;	376	CV *cv;
328		377
329	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
331	{	380	{
332	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
335	}	384	}
336		385
337	PUTBACK;	386	PUTBACK;
338	}	387	}
339	}	388	}
340		389
341	static void	390	static void
342	save_perl (Coro__State c)	391	save_perl (pTHX_ Coro__State c)
343	{	392	{
344	{	393	{
345	dSP;	394	dSP;
346	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	399	/*
351	* 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
352	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
353	*/	402	*/
354		403
355	EXTEND (SP, 3 + 1);
356	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
357	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
358	for (;;)	406	for (;;)
359	{	407	{
360	while (cxix >= 0)	408	while (cxix >= 0)
361	{	409	{
362	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
363		411
364	if (CxTYPE (cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
365	{	413	{
366	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
367		415
368	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
369	{	417	{
…		…
371	PUSHs ((SV *)CvPADLIST (cv));	419	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
374		422
375	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
376	get_padlist (cv);	424	get_padlist (aTHX_ cv);
377	}	425	}
378	}	426	}
379	}	427	}
380		428
381	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
382	break;	430	break;
383		431
384	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
385	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
386	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
387	}	435	}
388		436
389	PUTBACK;	437	PUTBACK;
390	}	438	}
391		439
392	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;
393	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
394	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;
395	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;
396		445
397	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
398	# include "state.h"	447	# include "state.h"
399	#undef VAR	448	#undef VAR
…		…
403	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
407	*/	456	*/
408	#if USE_PERL_INIT_STACKS	457	#if CORO_PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	458	# define coro_init_stacks init_stacks
410	#else	459	#else
411
412	static void	460	static void
413	coro_init_stacks ()	461	coro_init_stacks (pTHX)
414	{	462	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	463	PL_curstackinfo = new_stackinfo(64, 6);
416	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
417	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
418	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419		467
420	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
421	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
422	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423		471
424	New(50,PL_tmps_stack,128,SV*);	472	New(50,PL_tmps_stack,64,SV*);
425	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
426	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
427	PL_tmps_max = 128;	475	PL_tmps_max = 64;
428		476
429	New(54,PL_markstack,32,I32);	477	New(54,PL_markstack,16,I32);
430	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
431	PL_markstack_max = PL_markstack + 32;	479	PL_markstack_max = PL_markstack + 16;
432		480
433	#ifdef SET_MARK_OFFSET	481	#ifdef SET_MARK_OFFSET
434	SET_MARK_OFFSET;	482	SET_MARK_OFFSET;
435	#endif	483	#endif
436		484
437	New(54,PL_scopestack,32,I32);	485	New(54,PL_scopestack,16,I32);
438	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
439	PL_scopestack_max = 32;	487	PL_scopestack_max = 16;
440		488
441	New(54,PL_savestack,64,ANY);	489	New(54,PL_savestack,64,ANY);
442	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
443	PL_savestack_max = 64;	491	PL_savestack_max = 64;
444		492
445	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
446	New(54,PL_retstack,16,OP*);	494	New(54,PL_retstack,4,OP*);
447	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	496	PL_retstack_max = 4;
449	#endif	497	#endif
450	}	498	}
		499	#endif
451		500
452	/*	501	/*
453	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
454	*/	503	*/
455	static void	504	static void
456	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
457	{	506	{
458	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
459	{	508	{
460	/* restore all saved variables and stuff */	509	/* restore all saved variables and stuff */
461	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
…		…
463		512
464	/* free all temporaries */	513	/* free all temporaries */
465	FREETMPS;	514	FREETMPS;
466	assert (PL_tmps_ix == -1);	515	assert (PL_tmps_ix == -1);
467		516
		517	/* unwind all extra stacks */
468	POPSTACK_TO (PL_mainstack);	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
469	}	522	}
470		523
471	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
473		526
…		…
489	Safefree (PL_savestack);	542	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
491	Safefree (PL_retstack);	544	Safefree (PL_retstack);
492	#endif	545	#endif
493	}	546	}
494	#endif
495		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
496	static void	581	static void
497	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
498	{	583	{
499	/*	584	/*
500	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
501	*/	586	*/
502
503	coro_init_stacks ();	587	coro_init_stacks (aTHX);
504		588
505	PL_curcop = &PL_compiling;	589	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
507	PL_curpm = 0;	592	PL_curpm = 0;
508	PL_localizing = 0;	593	PL_localizing = 0;
509	PL_dirty = 0;	594	PL_dirty = 0;
510	PL_restartop = 0;	595	PL_restartop = 0;
511		596
…		…
519	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
520	myop.op_next = Nullop;	605	myop.op_next = Nullop;
521	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
522		607
523	PUSHMARK (SP);	608	PUSHMARK (SP);
524	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	609	XPUSHs (av_shift (GvAV (PL_defgv)));
525	PUTBACK;	610	PUTBACK;
526	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
527	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528	SPAGAIN;	613	SPAGAIN;
529	}	614	}
530		615
531	ENTER; /* necessary e.g. for dounwind */	616	ENTER; /* necessary e.g. for dounwind */
532	}	617	}
533		618
534	static void	619	static void
535	free_coro_mortal ()	620	free_coro_mortal (pTHX)
536	{	621	{
537	if (coro_mortal)	622	if (coro_mortal)
538	{	623	{
539	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
540	coro_mortal = 0;	625	coro_mortal = 0;
541	}	626	}
542	}	627	}
543		628
544	/* 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 */
545	static void NOINLINE	632	static void NOINLINE
546	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
547	{	634	{
548	dSP;	635	dSP;
549	LOGOP myop;	636	LOGOP myop;
550		637
551	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
…		…
560	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
561	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562	SPAGAIN;	649	SPAGAIN;
563	}	650	}
564		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
565	static void	655	static void
566	coro_run (void *arg)	656	coro_run (void *arg)
567	{	657	{
		658	dTHX;
		659
568	/* coro_run is the alternative tail of transfer(), so unlock here. */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
569	UNLOCK;	661	UNLOCK;
570		662
571	/*
572	* this is a _very_ stripped down perl interpreter ;)
573	*/
574	PL_top_env = &PL_start_env;	663	PL_top_env = &PL_start_env;
575		664
576	/* inject call to cctx_init */	665	/* inject a fake subroutine call to cctx_init */
577	prepare_cctx ((coro_cctx *)arg);	666	prepare_cctx (aTHX_ (coro_cctx *)arg);
578		667
579	/* 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 */
580	PL_restartop = PL_op;	669	PL_restartop = PL_op;
581	perl_run (PL_curinterp);	670	perl_run (PL_curinterp);
582		671
583	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	672	/*
584	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 */
585	}	681	}
586		682
587	static coro_cctx *	683	static coro_cctx *
588	cctx_new ()	684	cctx_new ()
589	{	685	{
590	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
591		689
592	++cctx_count;	690	++cctx_count;
593		691
594	Newz (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
595		693
596	#if HAVE_MMAP	694	#if HAVE_MMAP
597		695
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
600	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);
601		699
602	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	701	{
607
608	# if STACKGUARD	702	# if CORO_STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610	# 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);
611		714
612	#else
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)	715	if (!cctx->sptr)
618	{	716	{
619	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
620	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
621	}	719	}
622		720
623	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
624		724
625	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr
629	);
630	#endif
631
632	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);
633		727
634	return cctx;	728	return cctx;
635	}	729	}
636		730
637	static void	731	static void
…		…
640	if (!cctx)	734	if (!cctx)
641	return;	735	return;
642		736
643	--cctx_count;	737	--cctx_count;
644		738
645	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	741	#endif
648		742
649	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
650	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
651	#else	746	else
		747	#endif
652	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
653	#endif
654		749
655	Safefree (cctx);	750	Safefree (cctx);
656	}	751	}
657		752
658	static coro_cctx *	753	static coro_cctx *
659	cctx_get ()	754	cctx_get (pTHX)
660	{	755	{
661	coro_cctx *cctx;
662
663	if (cctx_first)	756	while (cctx_first)
664	{	757	{
665	cctx = cctx_first;	758	coro_cctx *cctx = cctx_first;
666	cctx_first = cctx->next;	759	cctx_first = cctx->next;
667	--cctx_idle;	760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
668	}	766	}
669	else	767
670	{
671	cctx = cctx_new ();
672	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
673	}
674
675	return cctx;	769	return cctx_new ();
676	}	770	}
677		771
678	static void	772	static void
679	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
680	{	774	{
…		…
692	++cctx_idle;	786	++cctx_idle;
693	cctx->next = cctx_first;	787	cctx->next = cctx_first;
694	cctx_first = cctx;	788	cctx_first = cctx;
695	}	789	}
696		790
		791	/** coroutine switching *****************************************************/
		792
697	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
698	static void NOINLINE	794	static void NOINLINE
699	transfer (struct coro *prev, struct coro *next)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
700	{	796	{
701	dSTACKLEVEL;	797	dSTACKLEVEL;
702		798
703	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	800	if (!next)
705	{	801	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	803	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
708	}	804	}
709	else if (prev != next)	805	else if (prev != next)
710	{	806	{
711	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
712		808
…		…
724	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");
725		821
726	if (next->flags & CF_RUNNING)	822	if (next->flags & CF_RUNNING)
727	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");
728		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
729	prev->flags &= ~CF_RUNNING;	828	prev->flags &= ~CF_RUNNING;
730	next->flags |= CF_RUNNING;	829	next->flags |= CF_RUNNING;
731		830
732	LOCK;	831	LOCK;
733		832
734	if (next->flags & CF_NEW)	833	if (next->flags & CF_NEW)
735	{	834	{
736	/* need to start coroutine */	835	/* need to start coroutine */
737	next->flags &= ~CF_NEW;	836	next->flags &= ~CF_NEW;
738	/* first get rid of the old state */	837	/* first get rid of the old state */
739	save_perl (prev);	838	save_perl (aTHX_ prev);
740	/* setup coroutine call */	839	/* setup coroutine call */
741	setup_coro (next);	840	setup_coro (aTHX_ next);
742	/* need a new stack */	841	/* need a new stack */
743	assert (!next->cctx);	842	assert (!next->cctx);
744	}	843	}
745	else	844	else
746	{	845	{
747	/* coroutine already started */	846	/* coroutine already started */
748	save_perl (prev);	847	save_perl (aTHX_ prev);
749	load_perl (next);	848	load_perl (aTHX_ next);
750	}	849	}
751		850
752	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
753		852
754	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
755	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
756	{	855	{
757	/* 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 */
758	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));
759		858
760	prev->cctx = 0;	859	prev->cctx = 0;
761		860
762	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;	862	prev__cctx->inuse = 0;
764	}	863	}
765		864
766	if (!next->cctx)	865	if (!next->cctx)
767	{	866	{
768	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
769	assert (!next->cctx->inuse);	868	assert (!next->cctx->inuse);
770	next->cctx->inuse = 1;	869	next->cctx->inuse = 1;
771	}	870	}
772		871
773	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
…		…
775	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
776	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	877	}
779		878
780	free_coro_mortal ();	879	free_coro_mortal (aTHX);
781
782	UNLOCK;	880	UNLOCK;
783	}	881	}
784	}	882	}
785		883
786	struct transfer_args	884	struct transfer_args
787	{	885	{
788	struct coro *prev, *next;	886	struct coro *prev, *next;
789	};	887	};
790		888
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
792		890
		891	/** high level stuff ********************************************************/
		892
793	static void	893	static int
794	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
795	{	895	{
796	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
797	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 */
798		911
799	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	913	{
801	struct coro temp;	914	struct coro temp;
		915
		916	assert (!(coro->flags & CF_RUNNING));
		917
802	Zero (&temp, 1, struct coro);	918	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;	919	temp.save = CORO_SAVE_ALL;
804		920
805	if (coro->flags & CF_RUNNING)	921	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	922	croak ("FATAL: tried to destroy currently running coroutine");
807		923
808	save_perl (&temp);	924	save_perl (aTHX_ &temp);
809	load_perl (coro);	925	load_perl (aTHX_ coro);
810		926
811	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
812		928
813	load_perl (&temp); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
814		930
815	coro->mainstack = 0;	931	coro->mainstack = 0;
816	}	932	}
817		933
818	cctx_destroy (coro->cctx);	934	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
820	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;
821	}	942	}
822		943
823	static int	944	static int
824	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
825	{	946	{
826	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
827	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
828		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
829	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
830		957
831	return 0;	958	return 0;
832	}	959	}
833		960
834	static int	961	static int
…		…
841	return 0;	968	return 0;
842	}	969	}
843		970
844	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	972	0, 0, 0, 0,
846	coro_state_clear,	973	coro_state_free,
847	0,	974	0,
848	#ifdef MGf_DUP	975	#ifdef MGf_DUP
849	coro_state_dup,	976	coro_state_dup,
850	#else	977	#else
851	# define MGf_DUP 0	978	# define MGf_DUP 0
852	#endif	979	#endif
853	};	980	};
854		981
855	static struct coro *	982	static struct coro *
856	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
857	{	984	{
858	HV *stash;	985	HV *stash;
859	MAGIC *mg;	986	MAGIC *mg;
860		987
861	if (SvROK (coro))	988	if (SvROK (coro))
…		…
867	/* very slow, but rare, check */	994	/* very slow, but rare, check */
868	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869	croak ("Coro::State object required");	996	croak ("Coro::State object required");
870	}	997	}
871		998
872	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
873	assert (mg->mg_type == PERL_MAGIC_ext);
874	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
875	}	1001	}
876		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
877	static void	1005	static void
878	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)
879	{	1007	{
880	ta->prev = SvSTATE (prev_sv);	1008	ta->prev = SvSTATE (prev_sv);
881	ta->next = SvSTATE (next_sv);	1009	ta->next = SvSTATE (next_sv);
882	}	1010	}
883		1011
884	static void	1012	static void
885	api_transfer (SV *prev_sv, SV *next_sv)	1013	api_transfer (SV *prev_sv, SV *next_sv)
886	{	1014	{
		1015	dTHX;
887	struct transfer_args ta;	1016	struct transfer_args ta;
888		1017
889	prepare_transfer (&ta, prev_sv, next_sv);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890	TRANSFER (ta);	1019	TRANSFER (ta);
891	}	1020	}
892		1021
893	static int	1022	static int
894	api_save (SV *coro_sv, int new_save)	1023	api_save (SV *coro_sv, int new_save)
895	{	1024	{
		1025	dTHX;
896	struct coro *coro = SvSTATE (coro_sv);	1026	struct coro *coro = SvSTATE (coro_sv);
897	int old_save = coro->save;	1027	int old_save = coro->save;
898		1028
899	if (new_save >= 0)	1029	if (new_save >= 0)
900	coro->save = new_save;	1030	coro->save = new_save;
…		…
902	return old_save;	1032	return old_save;
903	}	1033	}
904		1034
905	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
906		1036
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	1037	static void
920	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
921	{	1039	{
922	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);
923	coro_nready++;
924	}	1041	}
925		1042
926	static SV *	1043	static SV *
927	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
928	{	1045	{
929	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
930		1047
931	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
932	if (min_prio < 0)	1049	if (min_prio < 0)
933	min_prio = 0;	1050	min_prio = 0;
934		1051
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
940	}
941		1055
942	return 0;	1056	return 0;
943	}	1057	}
944		1058
945	static int	1059	static int
946	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
947	{	1061	{
		1062	dTHX;
948	struct coro *coro;	1063	struct coro *coro;
949		1064
950	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
951	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
952		1067
953	coro = SvSTATE (coro_sv);	1068	coro = SvSTATE (coro_sv);
954		1069
955	if (coro->flags & CF_READY)	1070	if (coro->flags & CF_READY)
956	return 0;	1071	return 0;
957		1072
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags |= CF_READY;	1073	coro->flags |= CF_READY;
964		1074
965	LOCK;	1075	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
967	UNLOCK;	1078	UNLOCK;
968		1079
969	return 1;	1080	return 1;
970	}	1081	}
971		1082
972	static int	1083	static int
973	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
974	{	1085	{
		1086	dTHX;
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1088	}
977		1089
978	static void	1090	static void
979	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
980	{	1092	{
981	SV *prev, *next;	1093	SV *prev_sv, *next_sv;
982		1094
983	for (;;)	1095	for (;;)
984	{	1096	{
985	LOCK;	1097	LOCK;
986	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;
987	UNLOCK;	1130	UNLOCK;
988
989	if (next)
990	break;	1131	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1132	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1133
1010	/* free this only after the transfer */	1134	/* free this only after the transfer */
1011	LOCK;	1135	prev_sv = SvRV (coro_current);
1012	free_coro_mortal ();	1136	SvRV_set (coro_current, next_sv);
1013	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);	1137	ta->prev = SvSTATE (prev_sv);
1020	ta->next = SvSTATE (next);
1021		1138
1022	assert (ta->next->flags & CF_READY);	1139	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;	1140	ta->next->flags &= ~CF_READY;
1024	}
1025		1141
		1142	LOCK;
		1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
		1145	UNLOCK;
		1146	}
		1147
1026	static void	1148	static void
1027	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1028	{	1150	{
1029	api_ready (coro_current);	1151	api_ready (coro_current);
1030
1031	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;
1032	}	1167	}
1033		1168
1034	static void	1169	static void
1035	api_schedule (void)	1170	api_schedule (void)
1036	{	1171	{
		1172	dTHX;
1037	struct transfer_args ta;	1173	struct transfer_args ta;
1038		1174
1039	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1040	TRANSFER (ta);	1176	TRANSFER (ta);
1041	}	1177	}
1042		1178
1043	static void	1179	static int
1044	api_cede (void)	1180	api_cede (void)
1045	{	1181	{
		1182	dTHX;
1046	struct transfer_args ta;	1183	struct transfer_args ta;
1047		1184
1048	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1049	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;
1050	}	1209	}
1051		1210
1052	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1053		1212
1054	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1064		1223
1065	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068	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));
1069	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1070		1231
1071	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;
1072		1237
1073	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1074	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1075		1240
1076	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1084	HV *hv;	1249	HV *hv;
1085	int i;	1250	int i;
1086		1251
1087	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1088	coro->args = newAV ();	1253	coro->args = newAV ();
1089	coro->save = CORO_SAVE_ALL;	1254	coro->save = CORO_SAVE_DEF;
1090	coro->flags = CF_NEW;	1255	coro->flags = CF_NEW;
1091		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1092	hv = newHV ();	1261	coro->hv = hv = newHV ();
1093	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;
1094	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095		1264
1096	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1097	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
…		…
1104	CODE:	1273	CODE:
1105	RETVAL = api_save (coro, new_save);	1274	RETVAL = api_save (coro, new_save);
1106	OUTPUT:	1275	OUTPUT:
1107	RETVAL	1276	RETVAL
1108		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
1109	void	1289	void
1110	_set_stacklevel (...)	1290	_set_stacklevel (...)
1111	ALIAS:	1291	ALIAS:
1112	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1113	Coro::schedule = 2	1293	Coro::schedule = 2
1114	Coro::cede = 3	1294	Coro::cede = 3
		1295	Coro::cede_notself = 4
1115	CODE:	1296	CODE:
1116	{	1297	{
1117	struct transfer_args ta;	1298	struct transfer_args ta;
1118		1299
1119	switch (ix)	1300	switch (ix)
…		…
1125		1306
1126	case 1:	1307	case 1:
1127	if (items != 2)	1308	if (items != 2)
1128	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);
1129		1310
1130	prepare_transfer (&ta, ST (0), ST (1));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131	break;	1312	break;
1132		1313
1133	case 2:	1314	case 2:
1134	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1135	break;	1316	break;
1136		1317
1137	case 3:	1318	case 3:
1138	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
1139	break;	1326	break;
1140	}	1327	}
1141		1328
		1329	BARRIER;
1142	TRANSFER (ta);	1330	TRANSFER (ta);
1143	}
1144		1331
1145	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1146	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1147	CODE:	1338	CODE:
1148	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1150		1341	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1155	}
1156		1342
1157	void	1343	void
1158	_exit (code)	1344	_exit (code)
1159	int code	1345	int code
1160	PROTOTYPE: $	1346	PROTOTYPE: $
1161	CODE:	1347	CODE:
1162	_exit (code);	1348	_exit (code);
1163		1349
1164	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
1165	cctx_count ()	1360	cctx_count ()
1166	CODE:	1361	CODE:
1167	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1168	OUTPUT:	1363	OUTPUT:
1169	RETVAL	1364	RETVAL
…		…
1173	CODE:	1368	CODE:
1174	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1175	OUTPUT:	1370	OUTPUT:
1176	RETVAL	1371	RETVAL
1177		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	_eval (Coro::State coro, SV *coderef)
		1385	CODE:
		1386	{
		1387	if (coro->mainstack)
		1388	{
		1389	struct coro temp;
		1390	Zero (&temp, 1, struct coro);
		1391	temp.save = CORO_SAVE_ALL;
		1392
		1393	if (!(coro->flags & CF_RUNNING))
		1394	{
		1395	save_perl (aTHX_ &temp);
		1396	load_perl (aTHX_ coro);
		1397	}
		1398
		1399	{
		1400	dSP;
		1401	ENTER;
		1402	SAVETMPS;
		1403	PUSHMARK (SP);
		1404	PUTBACK;
		1405	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1406	SPAGAIN;
		1407	FREETMPS;
		1408	LEAVE;
		1409	PUTBACK;
		1410	}
		1411
		1412	if (!(coro->flags & CF_RUNNING))
		1413	{
		1414	save_perl (aTHX_ coro);
		1415	load_perl (aTHX_ &temp);
		1416	}
		1417	}
		1418	}
		1419
		1420	SV *
		1421	is_ready (Coro::State coro)
		1422	PROTOTYPE: $
		1423	ALIAS:
		1424	is_ready = CF_READY
		1425	is_running = CF_RUNNING
		1426	is_new = CF_NEW
		1427	is_destroyed = CF_DESTROYED
		1428	CODE:
		1429	RETVAL = boolSV (coro->flags & ix);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	IV
		1434	rss (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = coro_rss (coro);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441
1178	MODULE = Coro::State PACKAGE = Coro	1442	MODULE = Coro::State PACKAGE = Coro
1179		1443
1180	BOOT:	1444	BOOT:
1181	{	1445	{
1182	int i;	1446	int i;
		1447
		1448	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1449	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1450	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1451
		1452	coro_current = get_sv ("Coro::current", FALSE);
		1453	SvREADONLY_on (coro_current);
1183		1454
1184	coro_stash = gv_stashpv ("Coro", TRUE);	1455	coro_stash = gv_stashpv ("Coro", TRUE);
1185		1456
1186	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1457	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1458	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1459	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1460	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1461	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1462	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192		1463
1193	coro_current = get_sv ("Coro::current", FALSE);
1194	SvREADONLY_on (coro_current);
1195
1196	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1464	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197	coro_ready[i] = newAV ();	1465	coro_ready[i] = newAV ();
1198		1466
1199	{	1467	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1468	SV *sv = perl_get_sv("Coro::API", 1);
1201		1469
1202	coroapi.schedule = api_schedule;	1470	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;	1471	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1472	coroapi.cede = api_cede;
		1473	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1474	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1475	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1476	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1477	coroapi.current = coro_current;
1209		1478
1210	GCoroAPI = &coroapi;	1479	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1480	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1481	SvREADONLY_on (sv);
1213	}	1482	}
…		…
1229	RETVAL = coro->prio;	1498	RETVAL = coro->prio;
1230		1499
1231	if (items > 1)	1500	if (items > 1)
1232	{	1501	{
1233	if (ix)	1502	if (ix)
1234	newprio += coro->prio;	1503	newprio = coro->prio - newprio;
1235		1504
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1505	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1506	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1507
1239	coro->prio = newprio;	1508	coro->prio = newprio;
1240	}	1509	}
1241	}	1510	}
		1511	OUTPUT:
		1512	RETVAL
1242		1513
1243	SV *	1514	SV *
1244	ready (SV *self)	1515	ready (SV *self)
1245	PROTOTYPE: $	1516	PROTOTYPE: $
1246	CODE:	1517	CODE:
1247	RETVAL = boolSV (api_ready (self));	1518	RETVAL = boolSV (api_ready (self));
1248	OUTPUT:	1519	OUTPUT:
1249	RETVAL	1520	RETVAL
1250		1521
1251	SV *
1252	is_ready (SV *self)
1253	PROTOTYPE: $
1254	CODE:
1255	RETVAL = boolSV (api_is_ready (self));
1256	OUTPUT:
1257	RETVAL
1258
1259	int	1522	int
1260	nready (...)	1523	nready (...)
1261	PROTOTYPE:	1524	PROTOTYPE:
1262	CODE:	1525	CODE:
1263	RETVAL = coro_nready;	1526	RETVAL = coro_nready;
1264	OUTPUT:	1527	OUTPUT:
1265	RETVAL	1528	RETVAL
1266		1529
		1530	# for async_pool speedup
		1531	SV *
		1532	_pool_1 (...)
		1533	CODE:
		1534	{
		1535	int i, len;
		1536	HV *hv = (HV *)SvRV (coro_current);
		1537	AV *defav = GvAV (PL_defgv);
		1538	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1539	AV *invoke_av;
		1540
		1541	if (!invoke)
		1542	XSRETURN_EMPTY;
		1543
		1544	hv_store (hv, "desc", sizeof ("desc") - 1,
		1545	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1546
		1547	invoke_av = (AV *)SvRV (invoke);
		1548	len = av_len (invoke_av);
		1549
		1550	RETVAL = SvREFCNT_inc (AvARRAY (invoke_av)[0]);
		1551
		1552	if (len > 0)
		1553	{
		1554	av_clear (defav);
		1555	av_extend (defav, len);
		1556	for (i = 0; i < len; ++i)
		1557	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1558	}
		1559
		1560	SvREFCNT_dec (invoke);
		1561	}
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	void
		1566	_pool_2 (...)
		1567	CODE:
		1568	{
		1569	struct coro *coro = SvSTATE (coro_current);
		1570
		1571	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1572	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1573	XSRETURN_YES;
		1574
		1575	av_clear (GvAV (PL_defgv));
		1576	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1577	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1578	coro->save = CORO_SAVE_DEF;
		1579	coro->prio = 0;
		1580	av_push (av_async_pool, newSVsv (coro_current));
		1581
		1582	XSRETURN_NO;
		1583	}
		1584
		1585
1267	MODULE = Coro::State PACKAGE = Coro::AIO	1586	MODULE = Coro::State PACKAGE = Coro::AIO
1268		1587
1269	SV *	1588	SV *
1270	_get_state ()	1589	_get_state ()
1271	CODE:	1590	CODE:

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