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Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.162 by root, Sun Sep 23 21:49:58 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	#include <assert.h>	13	#include <assert.h>
46
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	# undef STACKGUARD
49	#endif
50
51	#ifndef STACKGUARD
52	# define STACKGUARD 0
53	#endif
54		14
55	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
56	# include <unistd.h>	16	# include <unistd.h>
57	# include <sys/mman.h>	17	# include <sys/mman.h>
58	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
73	#else	33	#else
74	# define PAGESIZE 0	34	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
76	#endif	36	#endif
77		37
78	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
79	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
80	* 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. */
81	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
83		97
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		99
86	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
87	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
88	#else	103	#else
89	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
90	#endif	106	#endif
91		107
92	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
93		109
94	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
100	#else	116	#else
101	# define LOCK (void)0	117	# define LOCK (void)0
102	# define UNLOCK (void)0	118	# define UNLOCK (void)0
103	#endif	119	#endif
104		120
		121	/* helper storage struct for Coro::AIO */
105	struct io_state	122	struct io_state
106	{	123	{
107	int errorno;	124	int errorno;
108	I32 laststype;	125	I32 laststype;
109	int laststatval;	126	int laststatval;
110	Stat_t statcache;	127	Stat_t statcache;
111	};	128	};
112		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
114	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;
115	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
116	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;
117		141
118	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
119	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
120		144
121	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
122	typedef struct coro_cctx {	146	typedef struct coro_cctx {
123	struct coro_cctx *next;	147	struct coro_cctx *next;
124		148
125	/* the stack */	149	/* the stack */
126	void *sptr;	150	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
128		152
129	/* cpu state */	153	/* cpu state */
130	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 */
131	JMPENV *top_env;	156	JMPENV *top_env;
132	coro_context cctx;	157	coro_context cctx;
133		158
134	int inuse;
135
136	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
137	int valgrind_id;	160	int valgrind_id;
138	#endif	161	#endif
		162	char inuse, mapped;
139	} coro_cctx;	163	} coro_cctx;
140		164
141	enum {	165	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
144	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 */
145	};	170	};
146		171
147	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
148	struct coro {	173	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
…		…
157		182
158	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
159	AV *defav; /* @_ */	184	AV *defav; /* @_ */
160	SV *defsv; /* $_ */	185	SV *defsv; /* $_ */
161	SV *errsv; /* $@ */	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
162	SV *irssv; /* $/ */	188	SV *irssv; /* $/ */
163	SV *irssv_sv; /* real $/ cache */	189	SV *irssv_sv; /* real $/ cache */
164		190
165	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
166	# include "state.h"	192	# include "state.h"
167	#undef VAR	193	#undef VAR
168		194
169	/* coro process data */	195	/* coro process data */
170	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 */
171	};	201	};
172		202
173	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
175		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
176	static AV *	223	static AV *
177	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
178	{	225	{
179	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
180	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
181		228
182	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
194		241
195	return newpadlist;	242	return newpadlist;
196	}	243	}
197		244
198	static void	245	static void
199	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
200	{	247	{
201	/* may be during global destruction */	248	/* may be during global destruction */
202	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
203	{	250	{
204	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	272	AV *padlist;
226	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
227		274
228	/* casting is fun. */	275	/* casting is fun. */
229	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
230	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
231		278
232	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
233		280
234	return 0;	281	return 0;
235	}	282	}
…		…
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
246	: 0	293	: 0
247		294
248	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
249	static void	296	static void
250	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
251	{	298	{
252	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	300	AV *av;
254		301
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	304	else
258	{	305	{
259	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
265	#else	312	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	314	#endif
268	}	315	}
269	}	316	}
270		317
271	static void	318	static void
272	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
273	{	320	{
274	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
275	AV *av;	322	AV *av;
276		323
277	if (!mg)	324	if (!mg)
…		…
288	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
289		336
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	338	}
292		339
		340	/** load & save, init *******************************************************/
		341
293	#define SB do {	342	#define SB do {
294	#define SE } while (0)	343	#define SE } while (0)
295		344
296	#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
297		346
298	static void	347	static void
299	load_perl (Coro__State c)	348	load_perl (pTHX_ Coro__State c)
300	{	349	{
301	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
302	# include "state.h"	351	# include "state.h"
303	#undef VAR	352	#undef VAR
304		353
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	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
308	if (c->irssv)	359	if (c->irssv)
309	{	360	{
310	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		362	{
311	SvREFCNT_dec (c->irssv);	363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
312	else	366	else
313	{	367	{
314	REPLACE_SV (PL_rs, c->irssv);	368	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);	370	sv_setsv (c->irssv_sv, PL_rs);
…		…
322	CV *cv;	376	CV *cv;
323		377
324	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
326	{	380	{
327	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
330	}	384	}
331		385
332	PUTBACK;	386	PUTBACK;
333	}	387	}
334	}	388	}
335		389
336	static void	390	static void
337	save_perl (Coro__State c)	391	save_perl (pTHX_ Coro__State c)
338	{	392	{
339	{	393	{
340	dSP;	394	dSP;
341	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	399	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
348	*/	402	*/
349		403
350	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
352	for (;;)	406	for (;;)
353	{	407	{
354	while (cxix >= 0)	408	while (cxix >= 0)
355	{	409	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
357		411
358	if (CxTYPE (cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
359	{	413	{
360	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
361		415
362	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
363	{	417	{
364	EXTEND (SP, 3);	418	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	419	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
369		422
370	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
371	get_padlist (cv);	424	get_padlist (aTHX_ cv);
372	}	425	}
373	}	426	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	427	}
383		428
384	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
385	break;	430	break;
386		431
387	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
390	}	435	}
391		436
392	PUTBACK;	437	PUTBACK;
393	}	438	}
394		439
395	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;
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398	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;
399		445
400	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
401	# include "state.h"	447	# include "state.h"
402	#undef VAR	448	#undef VAR
…		…
406	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
410	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
411	static void	460	static void
412	coro_init_stacks ()	461	coro_init_stacks (pTHX)
413	{	462	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	463	PL_curstackinfo = new_stackinfo(64, 6);
415	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
418		467
419	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
420	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
422		471
423	New(50,PL_tmps_stack,128,SV*);	472	New(50,PL_tmps_stack,64,SV*);
424	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
425	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
426	PL_tmps_max = 128;	475	PL_tmps_max = 64;
427		476
428	New(54,PL_markstack,32,I32);	477	New(54,PL_markstack,16,I32);
429	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
430	PL_markstack_max = PL_markstack + 32;	479	PL_markstack_max = PL_markstack + 16;
431		480
432	#ifdef SET_MARK_OFFSET	481	#ifdef SET_MARK_OFFSET
433	SET_MARK_OFFSET;	482	SET_MARK_OFFSET;
434	#endif	483	#endif
435		484
436	New(54,PL_scopestack,32,I32);	485	New(54,PL_scopestack,16,I32);
437	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
438	PL_scopestack_max = 32;	487	PL_scopestack_max = 16;
439		488
440	New(54,PL_savestack,64,ANY);	489	New(54,PL_savestack,64,ANY);
441	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
442	PL_savestack_max = 64;	491	PL_savestack_max = 64;
443		492
444	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
445	New(54,PL_retstack,16,OP*);	494	New(54,PL_retstack,4,OP*);
446	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	496	PL_retstack_max = 4;
448	#endif	497	#endif
449	}	498	}
		499	#endif
450		500
451	/*	501	/*
452	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
453	*/	503	*/
454	static void	504	static void
455	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
456	{	506	{
457	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
458	{	508	{
459	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
460	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
461		512
462	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
463	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
464		516
		517	/* unwind all extra stacks */
465	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
466	}	522	}
467		523
468	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
470		526
471	while (PL_curstackinfo)	527	while (PL_curstackinfo)
472	{	528	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
474		530
475	{ /*D*//*remove*/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/*D*//*remove*/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		533
487	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	536	PL_curstackinfo = p;
490	}	537	}
…		…
496	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
497	Safefree (PL_retstack);	544	Safefree (PL_retstack);
498	#endif	545	#endif
499	}	546	}
500		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
501	static void	581	static void
502	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
503	{	583	{
504	/*	584	/*
505	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
506	*/	586	*/
507
508	coro_init_stacks ();	587	coro_init_stacks (aTHX);
509		588
510	PL_curcop = &PL_compiling;	589	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	590	PL_in_eval = EVAL_NULL;
		591	PL_comppad = 0;
512	PL_curpm = 0;	592	PL_curpm = 0;
513	PL_localizing = 0;	593	PL_localizing = 0;
514	PL_dirty = 0;	594	PL_dirty = 0;
515	PL_restartop = 0;	595	PL_restartop = 0;
516		596
…		…
524	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
525	myop.op_next = Nullop;	605	myop.op_next = Nullop;
526	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
527		607
528	PUSHMARK (SP);	608	PUSHMARK (SP);
529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	609	XPUSHs (av_shift (GvAV (PL_defgv)));
530	PUTBACK;	610	PUTBACK;
531	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
533	SPAGAIN;	613	SPAGAIN;
534	}	614	}
535		615
536	ENTER; /* necessary e.g. for dounwind */	616	ENTER; /* necessary e.g. for dounwind */
537	}	617	}
538		618
539	static void	619	static void
540	free_coro_mortal ()	620	free_coro_mortal (pTHX)
541	{	621	{
542	if (coro_mortal)	622	if (coro_mortal)
543	{	623	{
544	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	625	coro_mortal = 0;
546	}	626	}
547	}	627	}
548		628
549	/* 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 */
550	static void NOINLINE	632	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
552	{	634	{
553	dSP;	635	dSP;
554	LOGOP myop;	636	LOGOP myop;
555		637
556	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
…		…
565	PL_op = (OP *)&myop;	647	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	649	SPAGAIN;
568	}	650	}
569		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
570	static void	655	static void
571	coro_run (void *arg)	656	coro_run (void *arg)
572	{	657	{
		658	dTHX;
		659
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	661	UNLOCK;
575		662
576	/*
577	* this is a _very_ stripped down perl interpreter ;)
578	*/
579	PL_top_env = &PL_start_env;	663	PL_top_env = &PL_start_env;
580		664
581	/* inject call to cctx_init */	665	/* inject a fake subroutine call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	666	prepare_cctx (aTHX_ (coro_cctx *)arg);
583		667
584	/* 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 */
585	PL_restartop = PL_op;	669	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	670	perl_run (PL_curinterp);
587		671
588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	672	/*
589	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 */
590	}	681	}
591		682
592	static coro_cctx *	683	static coro_cctx *
593	cctx_new ()	684	cctx_new ()
594	{	685	{
595	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
596		689
597	++cctx_count;	690	++cctx_count;
598		691
599	Newz (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
600		693
601	#if HAVE_MMAP	694	#if HAVE_MMAP
602		695
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
605	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);
606		699
607	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	701	{
612
613	# if STACKGUARD	702	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# 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);
616		714
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	715	if (!cctx->sptr)
623	{	716	{
624	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
626	}	719	}
627		720
628	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
629		724
630	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	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);
638		727
639	return cctx;	728	return cctx;
640	}	729	}
641		730
642	static void	731	static void
…		…
645	if (!cctx)	734	if (!cctx)
646	return;	735	return;
647		736
648	--cctx_count;	737	--cctx_count;
649		738
650	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	741	#endif
653		742
654	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
655	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
656	#else	746	else
		747	#endif
657	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
658	#endif
659		749
660	Safefree (cctx);	750	Safefree (cctx);
661	}	751	}
662		752
663	static coro_cctx *	753	static coro_cctx *
664	cctx_get ()	754	cctx_get (pTHX)
665	{	755	{
666	coro_cctx *cctx;
667
668	if (cctx_first)	756	while (cctx_first)
669	{	757	{
670	cctx = cctx_first;	758	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	759	cctx_first = cctx->next;
672	--cctx_idle;	760	--cctx_idle;
		761
		762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
673	}	766	}
674	else	767
675	{
676	cctx = cctx_new ();
677	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
678	}
679
680	return cctx;	769	return cctx_new ();
681	}	770	}
682		771
683	static void	772	static void
684	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
685	{	774	{
…		…
697	++cctx_idle;	786	++cctx_idle;
698	cctx->next = cctx_first;	787	cctx->next = cctx_first;
699	cctx_first = cctx;	788	cctx_first = cctx;
700	}	789	}
701		790
		791	/** coroutine switching *****************************************************/
		792
702	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
703	static void NOINLINE	794	static void NOINLINE
704	transfer (struct coro *prev, struct coro *next)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
705	{	796	{
706	dSTACKLEVEL;	797	dSTACKLEVEL;
707		798
708	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	800	if (!next)
710	{	801	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	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 */
713	}	804	}
714	else if (prev != next)	805	else if (prev != next)
715	{	806	{
716	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
717		808
…		…
729	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");
730		821
731	if (next->flags & CF_RUNNING)	822	if (next->flags & CF_RUNNING)
732	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");
733		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
734	prev->flags &= ~CF_RUNNING;	828	prev->flags &= ~CF_RUNNING;
735	next->flags |= CF_RUNNING;	829	next->flags |= CF_RUNNING;
736		830
737	LOCK;	831	LOCK;
738		832
739	if (next->flags & CF_NEW)	833	if (next->flags & CF_NEW)
740	{	834	{
741	/* need to start coroutine */	835	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	836	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */	837	/* first get rid of the old state */
744	save_perl (prev);	838	save_perl (aTHX_ prev);
745	/* setup coroutine call */	839	/* setup coroutine call */
746	setup_coro (next);	840	setup_coro (aTHX_ next);
747	/* need a new stack */	841	/* need a new stack */
748	assert (!next->cctx);	842	assert (!next->cctx);
749	}	843	}
750	else	844	else
751	{	845	{
752	/* coroutine already started */	846	/* coroutine already started */
753	save_perl (prev);	847	save_perl (aTHX_ prev);
754	load_perl (next);	848	load_perl (aTHX_ next);
755	}	849	}
756		850
757	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
758		852
759	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
760	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
761	{	855	{
762	/* 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 */
763	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));
764		858
765	prev->cctx = 0;	859	prev->cctx = 0;
766		860
767	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;	862	prev__cctx->inuse = 0;
769	}	863	}
770		864
771	if (!next->cctx)	865	if (!next->cctx)
772	{	866	{
773	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);	868	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;	869	next->cctx->inuse = 1;
776	}	870	}
777		871
778	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
…		…
780	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	877	}
784		878
785	free_coro_mortal ();	879	free_coro_mortal (aTHX);
786
787	UNLOCK;	880	UNLOCK;
788	}	881	}
789	}	882	}
790		883
791	struct transfer_args	884	struct transfer_args
792	{	885	{
793	struct coro *prev, *next;	886	struct coro *prev, *next;
794	};	887	};
795		888
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
797		890
		891	/** high level stuff ********************************************************/
		892
798	static void	893	static int
799	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
800	{	895	{
801	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
802	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 */
803		911
804	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	913	{
806	struct coro temp;	914	struct coro temp;
		915
		916	assert (!(coro->flags & CF_RUNNING));
		917
807	Zero (&temp, 1, struct coro);	918	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;	919	temp.save = CORO_SAVE_ALL;
809		920
810	if (coro->flags & CF_RUNNING)	921	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	922	croak ("FATAL: tried to destroy currently running coroutine");
812		923
813	save_perl (&temp);	924	save_perl (aTHX_ &temp);
814	load_perl (coro);	925	load_perl (aTHX_ coro);
815		926
816	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
817		928
818	load_perl (&temp); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
819		930
820	coro->mainstack = 0;	931	coro->mainstack = 0;
821	}	932	}
822		933
823	cctx_destroy (coro->cctx);	934	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
825	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;
826	}	942	}
827		943
828	static int	944	static int
829	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
830	{	946	{
831	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
832	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
833		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
834	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
835		957
836	return 0;	958	return 0;
837	}	959	}
838		960
839	static int	961	static int
…		…
846	return 0;	968	return 0;
847	}	969	}
848		970
849	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	972	0, 0, 0, 0,
851	coro_state_clear,	973	coro_state_free,
852	0,	974	0,
853	#ifdef MGf_DUP	975	#ifdef MGf_DUP
854	coro_state_dup,	976	coro_state_dup,
855	#else	977	#else
856	# define MGf_DUP 0	978	# define MGf_DUP 0
857	#endif	979	#endif
858	};	980	};
859		981
860	static struct coro *	982	static struct coro *
861	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
862	{	984	{
863	HV *stash;	985	HV *stash;
864	MAGIC *mg;	986	MAGIC *mg;
865		987
866	if (SvROK (coro))	988	if (SvROK (coro))
…		…
872	/* very slow, but rare, check */	994	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");	996	croak ("Coro::State object required");
875	}	997	}
876		998
877	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
880	}	1001	}
881		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
882	static void	1005	static void
883	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)
884	{	1007	{
885	ta->prev = SvSTATE (prev_sv);	1008	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	1009	ta->next = SvSTATE (next_sv);
887	}	1010	}
888		1011
889	static void	1012	static void
890	api_transfer (SV *prev_sv, SV *next_sv)	1013	api_transfer (SV *prev_sv, SV *next_sv)
891	{	1014	{
		1015	dTHX;
892	struct transfer_args ta;	1016	struct transfer_args ta;
893		1017
894	prepare_transfer (&ta, prev_sv, next_sv);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	1019	TRANSFER (ta);
896	}	1020	}
897		1021
898	static int	1022	static int
899	api_save (SV *coro_sv, int new_save)	1023	api_save (SV *coro_sv, int new_save)
900	{	1024	{
		1025	dTHX;
901	struct coro *coro = SvSTATE (coro_sv);	1026	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;	1027	int old_save = coro->save;
903		1028
904	if (new_save >= 0)	1029	if (new_save >= 0)
905	coro->save = new_save;	1030	coro->save = new_save;
…		…
907	return old_save;	1032	return old_save;
908	}	1033	}
909		1034
910	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
911		1036
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1037	static void
925	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
926	{	1039	{
927	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);
928	coro_nready++;
929	}	1041	}
930		1042
931	static SV *	1043	static SV *
932	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
933	{	1045	{
934	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
935		1047
936	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1049	if (min_prio < 0)
938	min_prio = 0;	1050	min_prio = 0;
939		1051
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
945	}
946		1055
947	return 0;	1056	return 0;
948	}	1057	}
949		1058
950	static int	1059	static int
951	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
952	{	1061	{
		1062	dTHX;
953	struct coro *coro;	1063	struct coro *coro;
954		1064
955	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
957		1067
958	coro = SvSTATE (coro_sv);	1068	coro = SvSTATE (coro_sv);
959		1069
960	if (coro->flags & CF_READY)	1070	if (coro->flags & CF_READY)
961	return 0;	1071	return 0;
962		1072
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags |= CF_READY;	1073	coro->flags |= CF_READY;
969		1074
970	LOCK;	1075	LOCK;
971	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
972	UNLOCK;	1078	UNLOCK;
973		1079
974	return 1;	1080	return 1;
975	}	1081	}
976		1082
977	static int	1083	static int
978	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
979	{	1085	{
		1086	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1088	}
982		1089
983	static void	1090	static void
984	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1092	{
986	SV *prev, *next;	1093	SV *prev_sv, *next_sv;
987		1094
988	for (;;)	1095	for (;;)
989	{	1096	{
990	LOCK;	1097	LOCK;
991	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;
992	UNLOCK;	1130	UNLOCK;
993
994	if (next)
995	break;	1131	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1132	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1133
1015	/* free this only after the transfer */	1134	/* free this only after the transfer */
1016	LOCK;	1135	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();	1136	SvRV_set (coro_current, next_sv);
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1137	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);
1026		1138
1027	assert (ta->next->flags & CF_READY);	1139	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1140	ta->next->flags &= ~CF_READY;
1029	}
1030		1141
		1142	LOCK;
		1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
		1145	UNLOCK;
		1146	}
		1147
1031	static void	1148	static void
1032	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1150	{
1034	api_ready (coro_current);	1151	api_ready (coro_current);
1035
1036	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;
1037	}	1167	}
1038		1168
1039	static void	1169	static void
1040	api_schedule (void)	1170	api_schedule (void)
1041	{	1171	{
		1172	dTHX;
1042	struct transfer_args ta;	1173	struct transfer_args ta;
1043		1174
1044	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1176	TRANSFER (ta);
1046	}	1177	}
1047		1178
1048	static void	1179	static int
1049	api_cede (void)	1180	api_cede (void)
1050	{	1181	{
		1182	dTHX;
1051	struct transfer_args ta;	1183	struct transfer_args ta;
1052		1184
1053	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1054	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;
1055	}	1209	}
1056		1210
1057	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1058		1212
1059	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1069		1223
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	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));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1075		1231
1076	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;
1077		1237
1078	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1079	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1080		1240
1081	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1089	HV *hv;	1249	HV *hv;
1090	int i;	1250	int i;
1091		1251
1092	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1253	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;	1254	coro->save = CORO_SAVE_DEF;
1095	coro->flags = CF_NEW;	1255	coro->flags = CF_NEW;
1096		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1097	hv = newHV ();	1261	coro->hv = hv = newHV ();
1098	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;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1100		1264
1101	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1102	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
…		…
1109	CODE:	1273	CODE:
1110	RETVAL = api_save (coro, new_save);	1274	RETVAL = api_save (coro, new_save);
1111	OUTPUT:	1275	OUTPUT:
1112	RETVAL	1276	RETVAL
1113		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
1114	void	1289	void
1115	_set_stacklevel (...)	1290	_set_stacklevel (...)
1116	ALIAS:	1291	ALIAS:
1117	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1118	Coro::schedule = 2	1293	Coro::schedule = 2
1119	Coro::cede = 3	1294	Coro::cede = 3
		1295	Coro::cede_notself = 4
1120	CODE:	1296	CODE:
1121	{	1297	{
1122	struct transfer_args ta;	1298	struct transfer_args ta;
1123		1299
1124	switch (ix)	1300	switch (ix)
…		…
1130		1306
1131	case 1:	1307	case 1:
1132	if (items != 2)	1308	if (items != 2)
1133	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);
1134		1310
1135	prepare_transfer (&ta, ST (0), ST (1));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1312	break;
1137		1313
1138	case 2:	1314	case 2:
1139	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1140	break;	1316	break;
1141		1317
1142	case 3:	1318	case 3:
1143	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
1144	break;	1326	break;
1145	}	1327	}
1146		1328
		1329	BARRIER;
1147	TRANSFER (ta);	1330	TRANSFER (ta);
1148	}
1149		1331
1150	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1151	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1152	CODE:	1338	CODE:
1153	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1154	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1155		1341	RETVAL
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1160	}
1161		1342
1162	void	1343	void
1163	_exit (code)	1344	_exit (code)
1164	int code	1345	int code
1165	PROTOTYPE: $	1346	PROTOTYPE: $
1166	CODE:	1347	CODE:
1167	_exit (code);	1348	_exit (code);
1168		1349
1169	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
1170	cctx_count ()	1360	cctx_count ()
1171	CODE:	1361	CODE:
1172	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1173	OUTPUT:	1363	OUTPUT:
1174	RETVAL	1364	RETVAL
…		…
1178	CODE:	1368	CODE:
1179	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1180	OUTPUT:	1370	OUTPUT:
1181	RETVAL	1371	RETVAL
1182		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	SV *
		1434	has_stack (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = boolSV (!!coro->cctx);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	IV
		1442	rss (Coro::State coro)
		1443	PROTOTYPE: $
		1444	CODE:
		1445	RETVAL = coro_rss (coro);
		1446	OUTPUT:
		1447	RETVAL
		1448
		1449
1183	MODULE = Coro::State PACKAGE = Coro	1450	MODULE = Coro::State PACKAGE = Coro
1184		1451
1185	BOOT:	1452	BOOT:
1186	{	1453	{
1187	int i;	1454	int i;
		1455
		1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1458	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1459
		1460	coro_current = get_sv ("Coro::current", FALSE);
		1461	SvREADONLY_on (coro_current);
1188		1462
1189	coro_stash = gv_stashpv ("Coro", TRUE);	1463	coro_stash = gv_stashpv ("Coro", TRUE);
1190		1464
1191	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1192	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1469	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1470	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1197		1471
1198	coro_current = get_sv ("Coro::current", FALSE);
1199	SvREADONLY_on (coro_current);
1200
1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1202	coro_ready[i] = newAV ();	1473	coro_ready[i] = newAV ();
1203		1474
1204	{	1475	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1476	SV *sv = perl_get_sv("Coro::API", 1);
1206		1477
1207	coroapi.schedule = api_schedule;	1478	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;	1479	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1480	coroapi.cede = api_cede;
		1481	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1482	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1483	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1484	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1485	coroapi.current = coro_current;
1214		1486
1215	GCoroAPI = &coroapi;	1487	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1488	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1489	SvREADONLY_on (sv);
1218	}	1490	}
…		…
1234	RETVAL = coro->prio;	1506	RETVAL = coro->prio;
1235		1507
1236	if (items > 1)	1508	if (items > 1)
1237	{	1509	{
1238	if (ix)	1510	if (ix)
1239	newprio += coro->prio;	1511	newprio = coro->prio - newprio;
1240		1512
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1513	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1514	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1515
1244	coro->prio = newprio;	1516	coro->prio = newprio;
1245	}	1517	}
1246	}	1518	}
		1519	OUTPUT:
		1520	RETVAL
1247		1521
1248	SV *	1522	SV *
1249	ready (SV *self)	1523	ready (SV *self)
1250	PROTOTYPE: $	1524	PROTOTYPE: $
1251	CODE:	1525	CODE:
1252	RETVAL = boolSV (api_ready (self));	1526	RETVAL = boolSV (api_ready (self));
1253	OUTPUT:	1527	OUTPUT:
1254	RETVAL	1528	RETVAL
1255		1529
1256	SV *
1257	is_ready (SV *self)
1258	PROTOTYPE: $
1259	CODE:
1260	RETVAL = boolSV (api_is_ready (self));
1261	OUTPUT:
1262	RETVAL
1263
1264	int	1530	int
1265	nready (...)	1531	nready (...)
1266	PROTOTYPE:	1532	PROTOTYPE:
1267	CODE:	1533	CODE:
1268	RETVAL = coro_nready;	1534	RETVAL = coro_nready;
1269	OUTPUT:	1535	OUTPUT:
1270	RETVAL	1536	RETVAL
1271		1537
		1538	# for async_pool speedup
		1539	void
		1540	_pool_1 (SV *cb)
		1541	CODE:
		1542	{
		1543	int i, len;
		1544	HV *hv = (HV *)SvRV (coro_current);
		1545	AV *defav = GvAV (PL_defgv);
		1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1547	AV *invoke_av;
		1548
		1549	if (!invoke)
		1550	croak ("\3terminate\2\n");
		1551
		1552	hv_store (hv, "desc", sizeof ("desc") - 1,
		1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1554
		1555	invoke_av = (AV *)SvRV (invoke);
		1556	len = av_len (invoke_av);
		1557
		1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1559
		1560	if (len > 0)
		1561	{
		1562	av_fill (defav, len - 1);
		1563	for (i = 0; i < len; ++i)
		1564	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1565	}
		1566
		1567	SvREFCNT_dec (invoke);
		1568	}
		1569
		1570	void
		1571	_pool_2 (SV *cb)
		1572	CODE:
		1573	{
		1574	struct coro *coro = SvSTATE (coro_current);
		1575
		1576	sv_setsv (cb, &PL_sv_undef);
		1577
		1578	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1579	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1580	croak ("\3terminate\2\n");
		1581
		1582	av_clear (GvAV (PL_defgv));
		1583	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1585	coro->save = CORO_SAVE_DEF;
		1586	coro->prio = 0;
		1587	av_push (av_async_pool, newSVsv (coro_current));
		1588	}
		1589
		1590
1272	MODULE = Coro::State PACKAGE = Coro::AIO	1591	MODULE = Coro::State PACKAGE = Coro::AIO
1273		1592
1274	SV *	1593	SV *
1275	_get_state ()	1594	_get_state ()
1276	CODE:	1595	CODE:

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