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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC vs.
Revision 1.159 by root, Sat Sep 22 14:42:56 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	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	|| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	11	#include <stdio.h>
41	#include <errno.h>	12	#include <errno.h>
42		13	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		14
51	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
52	# include <unistd.h>	16	# include <unistd.h>
53	# include <sys/mman.h>	17	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
69	#else	33	#else
70	# define PAGESIZE 0	34	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
72	#endif	36	#endif
73		37
74	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
76	* 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. */
77	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
79		97
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		99
82	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
84	#else	103	#else
85	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
86	#endif	106	#endif
87		107
88	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
89		109
90	#include "CoroAPI.h"	110	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		111
94	#ifdef USE_ITHREADS	112	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	113	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	116	#else
99	# define LOCK (void)0	117	# define LOCK (void)0
100	# define UNLOCK (void)0	118	# define UNLOCK (void)0
101	#endif	119	#endif
102		120
		121	/* helper storage struct for Coro::AIO */
		122	struct io_state
		123	{
		124	int errorno;
		125	I32 laststype;
		126	int laststatval;
		127	Stat_t statcache;
		128	};
		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
104	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;
105	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
106	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;
107		141
108	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
110		144
111	/* this is a structure representing a c-level coroutine */	145	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	146	typedef struct coro_cctx {
113	struct coro_cctx *next;	147	struct coro_cctx *next;
114		148
115	/* the stack */	149	/* the stack */
116	void *sptr;	150	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	151	size_t ssize;
118		152
119	/* cpu state */	153	/* cpu state */
120	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 */
121	JMPENV *top_env;	156	JMPENV *top_env;
122	coro_context cctx;	157	coro_context cctx;
123		158
124	int inuse;
125
126	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
127	int valgrind_id;	160	int valgrind_id;
128	#endif	161	#endif
		162	char inuse, mapped;
129	} coro_cctx;	163	} coro_cctx;
130		164
131	enum {	165	enum {
132	CF_RUNNING, /* coroutine is running */	166	CF_RUNNING = 0x0001, /* coroutine is running */
133	CF_READY, /* coroutine is ready */	167	CF_READY = 0x0002, /* coroutine is ready */
		168	CF_NEW = 0x0004, /* has never been switched to */
		169	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134	};	170	};
135		171
136	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
137	struct coro {	173	struct coro {
138	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
139	coro_cctx *cctx;	175	coro_cctx *cctx;
140		176
141	/* data associated with this coroutine (initial args) */	177	/* data associated with this coroutine (initial args) */
142	AV *args;	178	AV *args;
143	int refcnt;	179	int refcnt;
144	int flags;	180	int save; /* CORO_SAVE flags */
		181	int flags; /* CF_ flags */
145		182
146	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
147	AV *defav;	184	AV *defav; /* @_ */
148	SV *defsv;	185	SV *defsv; /* $_ */
149	SV *errsv;	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
		188	SV *irssv; /* $/ */
		189	SV *irssv_sv; /* real $/ cache */
150		190
151	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
152	# include "state.h"	192	# include "state.h"
153	#undef VAR	193	#undef VAR
154		194
155	/* coro process data */	195	/* coro process data */
156	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 */
157	};	201	};
158		202
159	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
161		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
162	static AV *	223	static AV *
163	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
164	{	225	{
165	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
166	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
167		228
168	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
180		241
181	return newpadlist;	242	return newpadlist;
182	}	243	}
183		244
184	static void	245	static void
185	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
186	{	247	{
187	/* may be during global destruction */	248	/* may be during global destruction */
188	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
189	{	250	{
190	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	272	AV *padlist;
212	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
213		274
214	/* casting is fun. */	275	/* casting is fun. */
215	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
216	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
217		278
218	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
219		280
220	return 0;	281	return 0;
221	}	282	}
…		…
231	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
232	: 0	293	: 0
233		294
234	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
235	static void	296	static void
236	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
237	{	298	{
238	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
239	AV *av;	300	AV *av;
240		301
241	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
242	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243	else	304	else
244	{	305	{
245	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
246	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
247	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
248	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
249	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
250	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
251	#else	312	#else
252	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253	#endif	314	#endif
254	}	315	}
255	}	316	}
256		317
257	static void	318	static void
258	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
259	{	320	{
260	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
261	AV *av;	322	AV *av;
262		323
263	if (!mg)	324	if (!mg)
…		…
274	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
275		336
276	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277	}	338	}
278		339
		340	/** load & save, init *******************************************************/
		341
279	#define SB do {	342	#define SB do {
280	#define SE } while (0)	343	#define SE } while (0)
281		344
282	#define LOAD(state) load_state((state));
283	#define SAVE(state,flags) save_state((state),(flags));
284
285	#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
286		346
287	static void	347	static void
288	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
289	{	349	{
290	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
291	# include "state.h"	351	# include "state.h"
292	#undef VAR	352	#undef VAR
293		353
294	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296	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
		359	if (c->irssv)
		360	{
		361	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		362	{
		363	SvREFCNT_dec (c->irssv);
		364	c->irssv = 0;
		365	}
		366	else
		367	{
		368	REPLACE_SV (PL_rs, c->irssv);
		369	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		370	sv_setsv (c->irssv_sv, PL_rs);
		371	}
		372	}
297		373
298	{	374	{
299	dSP;	375	dSP;
300	CV *cv;	376	CV *cv;
301		377
302	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
303	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
304	{	380	{
305	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
306	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
307	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
308	}	384	}
309		385
310	PUTBACK;	386	PUTBACK;
311	}	387	}
312	}	388	}
313		389
314	static void	390	static void
315	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
316	{	392	{
317	{	393	{
318	dSP;	394	dSP;
319	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
320	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
323	/*	399	/*
324	* 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
325	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
326	*/	402	*/
327		403
328	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
329	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
330	for (;;)	406	for (;;)
331	{	407	{
332	while (cxix >= 0)	408	while (cxix >= 0)
333	{	409	{
334	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
335		411
336	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
337	{	413	{
338	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
339		415
340	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
341	{	417	{
342	EXTEND (SP, 3);	418	EXTEND (SP, 3);
343
344	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
345	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
346	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
347		422
348	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
349	get_padlist (cv);	424	get_padlist (aTHX_ cv);
350	}	425	}
351	}	426	}
352	#ifdef CXt_FORMAT
353	else if (CxTYPE(cx) == CXt_FORMAT)
354	{
355	/* I never used formats, so how should I know how these are implemented? */
356	/* my bold guess is as a simple, plain sub... */
357	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358	}
359	#endif
360	}	427	}
361		428
362	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
363	break;	430	break;
364		431
365	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
366	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
367	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
368	}	435	}
369		436
370	PUTBACK;	437	PUTBACK;
371	}	438	}
372		439
373	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	440	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
374	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
375	c->errsv = flags & TRANSFER_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;
		444	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
376		445
377	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
378	# include "state.h"	447	# include "state.h"
379	#undef VAR	448	#undef VAR
380	}	449	}
…		…
383	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
384	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
385	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
386	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
387	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
388	static void	460	static void
389	coro_init_stacks ()	461	coro_init_stacks (pTHX)
390	{	462	{
391	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
392	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
393	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
394	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395		467
396	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
397	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
398	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399		471
400	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
401	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
402	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
403	PL_tmps_max = 96;	475	PL_tmps_max = 64;
404		476
405	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
406	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
407	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
408		480
…		…
412		484
413	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
414	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
415	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
416		488
417	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
418	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
419	PL_savestack_max = 96;	491	PL_savestack_max = 64;
420		492
421	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
422	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
423	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
424	PL_retstack_max = 8;	496	PL_retstack_max = 4;
425	#endif	497	#endif
426	}	498	}
		499	#endif
427		500
428	/*	501	/*
429	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
430	*/	503	*/
431	static void	504	static void
432	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
433	{	506	{
434	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
435	{	508	{
436	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
437	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
438		512
439	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
440	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
441		516
		517	/* unwind all extra stacks */
442	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
443	}	522	}
444		523
445	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
446	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
447		526
448	while (PL_curstackinfo)	527	while (PL_curstackinfo)
449	{	528	{
450	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
451		530
452	{ /*D*//*remove*/
453	dSP;
454	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455	PUTBACK; /* possibly superfluous */
456	}
457
458	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
459	{
460	dounwind (-1);/*D*//*remove*/
461	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
462	}
463		533
464	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
465	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
466	PL_curstackinfo = p;	536	PL_curstackinfo = p;
467	}	537	}
…		…
473	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
474	Safefree (PL_retstack);	544	Safefree (PL_retstack);
475	#endif	545	#endif
476	}	546	}
477		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
478	static void	581	static void
479	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
480	{	583	{
481	/*	584	/*
482	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
483	*/	586	*/
484
485	coro_init_stacks ();	587	coro_init_stacks (aTHX);
486		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
487	PL_curcop = 0;	591	PL_comppad = 0;
488	PL_in_eval = 0;
489	PL_curpm = 0;	592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
490		596
491	{	597	{
492	dSP;	598	dSP;
493	LOGOP myop;	599	LOGOP myop;
494		600
495	/* I have no idea why this is needed, but it is */
496	PUSHMARK (SP);
497
498	SvREFCNT_dec (GvAV (PL_defgv));	601	SvREFCNT_dec (GvAV (PL_defgv));
499	GvAV (PL_defgv) = coro->args; coro->args = 0;	602	GvAV (PL_defgv) = coro->args; coro->args = 0;
500		603
501	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
502	myop.op_next = Nullop;	605	myop.op_next = Nullop;
503	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
504		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
505	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
506
507	PUSHMARK (SP);
508	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509	PUTBACK;
510	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511	SPAGAIN;	613	SPAGAIN;
512
513	ENTER; /* necessary e.g. for dounwind */
514	}	614	}
515	}
516		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
517	static void	619	static void
518	free_coro_mortal ()	620	free_coro_mortal (pTHX)
519	{	621	{
520	if (coro_mortal)	622	if (coro_mortal)
521	{	623	{
522	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
523	coro_mortal = 0;	625	coro_mortal = 0;
524	}	626	}
525	}	627	}
526		628
		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 */
527	static void NOINLINE	632	static void NOINLINE
528	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
529	{	634	{
530	dSP;	635	dSP;
531	LOGOP myop;	636	LOGOP myop;
532		637
533	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
534	myop.op_next = PL_op;	639	myop.op_next = PL_op;
535	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
536
537	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538		641
539	PUSHMARK (SP);	642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541	PUTBACK;	646	PUTBACK;
		647	PL_op = (OP *)&myop;
542	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543	SPAGAIN;	649	SPAGAIN;
544	}	650	}
545		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
546	static void	655	static void
547	coro_run (void *arg)	656	coro_run (void *arg)
548	{	657	{
		658	dTHX;
		659
549	/* coro_run is the alternative epilogue of transfer() */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
550	UNLOCK;	661	UNLOCK;
551		662
		663	PL_top_env = &PL_start_env;
		664
		665	/* inject a fake subroutine call to cctx_init */
		666	prepare_cctx (aTHX_ (coro_cctx *)arg);
		667
		668	/* somebody or something will hit me for both perl_run and PL_restartop */
		669	PL_restartop = PL_op;
		670	perl_run (PL_curinterp);
		671
552	/*	672	/*
553	* this is a _very_ stripped down perl interpreter ;)	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
554	*/	678	*/
555	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
556		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557	/* inject call to cctx_init */
558	prepare_cctx ((coro_cctx *)arg);
559
560	/* somebody will hit me for both perl_run and PL_restartop */
561	perl_run (PL_curinterp);
562
563	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564	abort ();
565	}	681	}
566		682
567	static coro_cctx *	683	static coro_cctx *
568	cctx_new ()	684	cctx_new ()
569	{	685	{
570	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
571		689
572	++cctx_count;	690	++cctx_count;
573		691
574	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
575		693
576	#if HAVE_MMAP	694	#if HAVE_MMAP
577		695
578	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
580	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);
581		699
582	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
583	{
584	perror ("FATAL: unable to mmap stack for coroutine");
585	_exit (EXIT_FAILURE);
586	}	701	{
587
588	# if STACKGUARD	702	# if CORO_STACKGUARD
589	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590	# 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);
591		714
592	#else
593
594	cctx->ssize = STACKSIZE * (long)sizeof (long);
595	New (0, cctx->sptr, STACKSIZE, long);
596
597	if (!cctx->sptr)	715	if (!cctx->sptr)
598	{	716	{
599	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
600	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
601	}	719	}
602		720
603	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
604		724
605	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
606	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
607	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608	cctx->ssize + (char *)cctx->sptr
609	);
610	#endif
611
612	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);
613		727
614	return cctx;	728	return cctx;
615	}	729	}
616		730
617	static void	731	static void
618	cctx_free (coro_cctx *cctx)	732	cctx_destroy (coro_cctx *cctx)
619	{	733	{
620	if (!cctx)	734	if (!cctx)
621	return;	735	return;
622		736
623	--cctx_count;	737	--cctx_count;
624		738
625	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
626	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627	#endif	741	#endif
628		742
629	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
630	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
631	#else	746	else
		747	#endif
632	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
633	#endif
634		749
635	Safefree (cctx);	750	Safefree (cctx);
636	}	751	}
637		752
638	static coro_cctx *	753	static coro_cctx *
639	cctx_get ()	754	cctx_get (pTHX)
640	{	755	{
641	coro_cctx *cctx;
642
643	if (cctx_first)	756	while (cctx_first)
644	{	757	{
		758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
645	--cctx_idle;	760	--cctx_idle;
646	cctx = cctx_first;	761
647	cctx_first = cctx->next;	762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
648	}	766	}
649	else	767
650	{
651	cctx = cctx_new ();
652	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
653	}
654
655	return cctx;	769	return cctx_new ();
656	}	770	}
657		771
658	static void	772	static void
659	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
660	{	774	{
		775	/* free another cctx if overlimit */
		776	if (cctx_idle >= MAX_IDLE_CCTX)
		777	{
		778	coro_cctx *first = cctx_first;
		779	cctx_first = first->next;
		780	--cctx_idle;
		781
		782	assert (!first->inuse);
		783	cctx_destroy (first);
		784	}
		785
661	++cctx_idle;	786	++cctx_idle;
662	cctx->next = cctx_first;	787	cctx->next = cctx_first;
663	cctx_first = cctx;	788	cctx_first = cctx;
664	}	789	}
665		790
		791	/** coroutine switching *****************************************************/
		792
666	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
667	static void NOINLINE	794	static void NOINLINE
668	transfer (struct coro *prev, struct coro *next, int flags)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
669	{	796	{
670	dSTACKLEVEL;	797	dSTACKLEVEL;
671		798
672	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
673	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
674	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	802	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		803	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		804	}
675	else if (prev != next)	805	else if (prev != next)
676	{	806	{
677	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
678		808
679	if (!prev->cctx)	809	if (prev->flags & CF_NEW)
680	{	810	{
681	/* create a new empty context */	811	/* create a new empty context */
682	Newz (0, prev->cctx, 1, coro_cctx);	812	Newz (0, prev->cctx, 1, coro_cctx);
683	prev->cctx->inuse = 1;	813	prev->cctx->inuse = 1;
		814	prev->flags &= ~CF_NEW;
684	prev->flags |= CF_RUNNING;	815	prev->flags |= CF_RUNNING;
685	}	816	}
686		817
		818	/*TODO: must not croak here */
687	if (!prev->flags & CF_RUNNING)	819	if (!prev->flags & CF_RUNNING)
688	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");
689		821
690	if (next->flags & CF_RUNNING)	822	if (next->flags & CF_RUNNING)
691	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");
692		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
693	prev->flags &= ~CF_RUNNING;	828	prev->flags &= ~CF_RUNNING;
694	next->flags |= CF_RUNNING;	829	next->flags |= CF_RUNNING;
695		830
696	LOCK;	831	LOCK;
697		832
698	if (next->mainstack)	833	if (next->flags & CF_NEW)
699	{	834	{
700	/* coroutine already started */	835	/* need to start coroutine */
701	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
702	LOAD (next);	837	/* first get rid of the old state */
		838	save_perl (aTHX_ prev);
		839	/* setup coroutine call */
		840	setup_coro (aTHX_ next);
		841	/* need a new stack */
		842	assert (!next->cctx);
703	}	843	}
704	else	844	else
705	{	845	{
706	/* need to start coroutine */	846	/* coroutine already started */
707	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
708	SAVE (prev, -1);	848	load_perl (aTHX_ next);
709	/* setup coroutine call */
710	setup_coro (next);
711	/* need a new stack */
712	assert (!next->stack);
713	}	849	}
714		850
715	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
716		852
717	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
718	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
719	{	855	{
720	assert (PL_top_env == prev__cctx->top_env);	856	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		857	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		858
		859	prev->cctx = 0;
721		860
722	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
723	prev->cctx = 0;	862	prev__cctx->inuse = 0;
724	}	863	}
725	else if (prev__cctx->idle_sp) //D
726	fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D
727		864
728	if (!next->cctx)	865	if (!next->cctx)
		866	{
729	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
		868	assert (!next->cctx->inuse);
		869	next->cctx->inuse = 1;
		870	}
730		871
731	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
732	{	873	{
733	assert ( prev__cctx->inuse);
734	assert (!next->cctx->inuse);
735
736	prev__cctx->inuse = 0;
737	next->cctx->inuse = 1;
738
739	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
740	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
741	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742	}	877	}
743		878
744	free_coro_mortal ();	879	free_coro_mortal (aTHX);
745
746	UNLOCK;	880	UNLOCK;
747	}	881	}
748	}	882	}
749		883
750	struct transfer_args	884	struct transfer_args
751	{	885	{
752	struct coro *prev, *next;	886	struct coro *prev, *next;
753	int flags;
754	};	887	};
755		888
756	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
757		890
		891	/** high level stuff ********************************************************/
		892
758	static void	893	static int
759	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
760	{	895	{
761	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
762	return;	897	return 0;
763		898
		899	coro->flags |= CF_DESTROYED;
		900
764	if (coro->flags & CF_RUNNING)	901	if (coro->flags & CF_READY)
765	croak ("FATAL: tried to destroy currently running coroutine");	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 */
766		911
767	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
768	{	913	{
769	struct coro temp;	914	struct coro temp;
770		915
771	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
772	LOAD (coro);
773		917
		918	Zero (&temp, 1, struct coro);
		919	temp.save = CORO_SAVE_ALL;
		920
		921	if (coro->flags & CF_RUNNING)
		922	croak ("FATAL: tried to destroy currently running coroutine");
		923
		924	save_perl (aTHX_ &temp);
		925	load_perl (aTHX_ coro);
		926
774	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
775		928
776	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
777		930
778	coro->mainstack = 0;	931	coro->mainstack = 0;
779	}	932	}
780		933
781	cctx_free (coro->cctx);	934	cctx_destroy (coro->cctx);
782	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
783	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;
784	}	942	}
785		943
786	static int	944	static int
787	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
788	{	946	{
789	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
790	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
791		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
792	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
793		957
794	return 0;	958	return 0;
795	}	959	}
796		960
797	static int	961	static int
…		…
804	return 0;	968	return 0;
805	}	969	}
806		970
807	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
808	0, 0, 0, 0,	972	0, 0, 0, 0,
809	coro_state_clear,	973	coro_state_free,
810	0,	974	0,
811	#ifdef MGf_DUP	975	#ifdef MGf_DUP
812	coro_state_dup,	976	coro_state_dup,
813	#else	977	#else
814	# define MGf_DUP 0	978	# define MGf_DUP 0
815	#endif	979	#endif
816	};	980	};
817		981
818	static struct coro *	982	static struct coro *
819	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
820	{	984	{
821	HV *stash;	985	HV *stash;
822	MAGIC *mg;	986	MAGIC *mg;
823		987
824	if (SvROK (coro))	988	if (SvROK (coro))
…		…
830	/* very slow, but rare, check */	994	/* very slow, but rare, check */
831	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
832	croak ("Coro::State object required");	996	croak ("Coro::State object required");
833	}	997	}
834		998
835	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
836	assert (mg->mg_type == PERL_MAGIC_ext);
837	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
838	}	1001	}
839		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
840	static void	1005	static void
841	prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags)	1006	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
842	{	1007	{
843	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
844	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
845	ta->flags = flags;
846	}	1010	}
847		1011
848	static void	1012	static void
849	api_transfer (SV *prev, SV *next, int flags)	1013	api_transfer (SV *prev_sv, SV *next_sv)
850	{	1014	{
851	dTHX;	1015	dTHX;
852	struct transfer_args ta;	1016	struct transfer_args ta;
853		1017
854	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
855	TRANSFER (ta);	1019	TRANSFER (ta);
856	}	1020	}
857		1021
		1022	static int
		1023	api_save (SV *coro_sv, int new_save)
		1024	{
		1025	dTHX;
		1026	struct coro *coro = SvSTATE (coro_sv);
		1027	int old_save = coro->save;
		1028
		1029	if (new_save >= 0)
		1030	coro->save = new_save;
		1031
		1032	return old_save;
		1033	}
		1034
858	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
859		1036
860	#define PRIO_MAX 3
861	#define PRIO_HIGH 1
862	#define PRIO_NORMAL 0
863	#define PRIO_LOW -1
864	#define PRIO_IDLE -3
865	#define PRIO_MIN -4
866
867	/* for Coro.pm */
868	static GV *coro_current, *coro_idle;
869	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870	static int coro_nready;
871
872	static void	1037	static void
873	coro_enq (SV *coro_sv)	1038	coro_enq (pTHX_ SV *coro_sv)
874	{	1039	{
875	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);
876	coro_nready++;
877	}	1041	}
878		1042
879	static SV *	1043	static SV *
880	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
881	{	1045	{
882	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
883		1047
884	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
885	if (min_prio < 0)	1049	if (min_prio < 0)
886	min_prio = 0;	1050	min_prio = 0;
887		1051
888	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
889	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
890	{
891	coro_nready--;
892	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
893	}
894		1055
895	return 0;	1056	return 0;
896	}	1057	}
897		1058
898	static int	1059	static int
899	api_ready (SV *coro_sv)	1060	api_ready (SV *coro_sv)
900	{	1061	{
		1062	dTHX;
901	struct coro *coro;	1063	struct coro *coro;
902		1064
903	if (SvROK (coro_sv))	1065	if (SvROK (coro_sv))
904	coro_sv = SvRV (coro_sv);	1066	coro_sv = SvRV (coro_sv);
905		1067
906	coro = SvSTATE (coro_sv);	1068	coro = SvSTATE (coro_sv);
907		1069
908	if (coro->flags & CF_READY)	1070	if (coro->flags & CF_READY)
909	return 0;	1071	return 0;
910		1072
911	if (coro->flags & CF_RUNNING)
912	croak ("Coro::ready called on currently running coroutine");
913
914	coro->flags |= CF_READY;	1073	coro->flags |= CF_READY;
915		1074
916	LOCK;	1075	LOCK;
917	coro_enq (SvREFCNT_inc (coro_sv));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
918	UNLOCK;	1078	UNLOCK;
919		1079
920	return 1;	1080	return 1;
921	}	1081	}
922		1082
923	static int	1083	static int
924	api_is_ready (SV *coro_sv)	1084	api_is_ready (SV *coro_sv)
925	{	1085	{
		1086	dTHX;
926	return !!SvSTATE (coro_sv)->flags & CF_READY;	1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
927	}	1088	}
928		1089
929	static void	1090	static void
930	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
931	{	1092	{
932	SV *current, *prev, *next;	1093	SV *prev_sv, *next_sv;
933
934	current = GvSV (coro_current);
935		1094
936	for (;;)	1095	for (;;)
937	{	1096	{
938	LOCK;	1097	LOCK;
939	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;
940	UNLOCK;	1130	UNLOCK;
941
942	if (next)
943	break;	1131	break;
944
945	{
946	dSP;
947
948	ENTER;
949	SAVETMPS;
950
951	PUSHMARK (SP);
952	PUTBACK;
953	call_sv (GvSV (coro_idle), G_DISCARD);
954
955	FREETMPS;
956	LEAVE;
957	}	1132	}
958	}
959
960	prev = SvRV (current);
961	SvRV (current) = next;
962		1133
963	/* free this only after the transfer */	1134	/* free this only after the transfer */
		1135	prev_sv = SvRV (coro_current);
		1136	SvRV_set (coro_current, next_sv);
		1137	ta->prev = SvSTATE (prev_sv);
		1138
		1139	assert (ta->next->flags & CF_READY);
		1140	ta->next->flags &= ~CF_READY;
		1141
964	LOCK;	1142	LOCK;
965	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
966	UNLOCK;	1145	UNLOCK;
967	coro_mortal = prev;
968
969	ta->prev = SvSTATE (prev);
970	ta->next = SvSTATE (next);
971	ta->flags = TRANSFER_SAVE_ALL;
972
973	ta->next->flags &= ~CF_READY;
974	}	1146	}
975		1147
976	static void	1148	static void
977	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
978	{	1150	{
979	api_ready (GvSV (coro_current));	1151	api_ready (coro_current);
980
981	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;
982	}	1167	}
983		1168
984	static void	1169	static void
985	api_schedule (void)	1170	api_schedule (void)
986	{	1171	{
987	dTHX;	1172	dTHX;
988	struct transfer_args ta;	1173	struct transfer_args ta;
989		1174
990	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
991	TRANSFER (ta);	1176	TRANSFER (ta);
992	}	1177	}
993		1178
994	static void	1179	static int
995	api_cede (void)	1180	api_cede (void)
996	{	1181	{
997	dTHX;	1182	dTHX;
998	struct transfer_args ta;	1183	struct transfer_args ta;
999		1184
1000	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
1001	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;
1002	}	1209	}
1003		1210
1004	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
1005		1212
1006	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
1012	#endif	1219	#endif
1013	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
1014		1221
1015	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1016		1223
1017	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1018	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1019	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1226	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		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));
		1230	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1020		1231
1021	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;
1022		1237
1023	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
1024	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
1025		1240
1026	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1034	HV *hv;	1249	HV *hv;
1035	int i;	1250	int i;
1036		1251
1037	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
1038	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
1039		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
1040	hv = newHV ();	1261	coro->hv = hv = newHV ();
1041	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;
1042	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1043		1264
1044	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1045	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
1046	}	1267	}
1047	OUTPUT:	1268	OUTPUT:
		1269	RETVAL
		1270
		1271	int
		1272	save (SV *coro, int new_save = -1)
		1273	CODE:
		1274	RETVAL = api_save (coro, new_save);
		1275	OUTPUT:
		1276	RETVAL
		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:
1048	RETVAL	1287	RETVAL
1049		1288
1050	void	1289	void
1051	_set_stacklevel (...)	1290	_set_stacklevel (...)
1052	ALIAS:	1291	ALIAS:
1053	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1054	Coro::schedule = 2	1293	Coro::schedule = 2
1055	Coro::cede = 3	1294	Coro::cede = 3
1056	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1057	CODE:	1296	CODE:
1058	{	1297	{
1059	struct transfer_args ta;	1298	struct transfer_args ta;
1060		1299
1061	switch (ix)	1300	switch (ix)
1062	{	1301	{
1063	case 0:	1302	case 0:
1064	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1303	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1065	ta.next = 0;	1304	ta.next = 0;
1066	ta.flags = TRANSFER_SET_STACKLEVEL;
1067	break;	1305	break;
1068		1306
1069	case 1:	1307	case 1:
1070	if (items != 3)	1308	if (items != 2)
1071	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1309	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1072		1310
1073	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1074	break;	1312	break;
1075		1313
1076	case 2:	1314	case 2:
1077	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1078	break;	1316	break;
1079		1317
1080	case 3:	1318	case 3:
1081	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1082	break;	1320	break;
1083		1321
1084	case 4:	1322	case 4:
1085	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1086	SV *yieldstack;	1324	XSRETURN_EMPTY;
1087	SV *sv;
1088	AV *defav = GvAV (PL_defgv);
1089		1325
1090	yieldstack = *hv_fetch (
1091	(HV *)SvRV (GvSV (coro_current)),
1092	"yieldstack", sizeof ("yieldstack") - 1,
1093	0
1094	);
1095
1096	/* set up @_ -- ugly */
1097	av_clear (defav);
1098	av_fill (defav, items - 1);
1099	while (items--)
1100	av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102	sv = av_pop ((AV *)SvRV (yieldstack));
1103	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1104	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1105	ta.flags = 0;
1106	SvREFCNT_dec (sv);
1107	}
1108	break;	1326	break;
1109
1110	}	1327	}
1111		1328
		1329	BARRIER;
1112	TRANSFER (ta);	1330	TRANSFER (ta);
1113	}
1114		1331
1115	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1116	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1117	CODE:	1338	CODE:
1118	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1119	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1120		1341	RETVAL
1121	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1122
1123	++coro_src->refcnt;
1124	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1125	}
1126		1342
1127	void	1343	void
1128	_exit (code)	1344	_exit (code)
1129	int code	1345	int code
1130	PROTOTYPE: $	1346	PROTOTYPE: $
1131	CODE:	1347	CODE:
1132	_exit (code);	1348	_exit (code);
1133		1349
1134	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
1135	cctx_count ()	1360	cctx_count ()
1136	CODE:	1361	CODE:
1137	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1138	OUTPUT:	1363	OUTPUT:
1139	RETVAL	1364	RETVAL
…		…
1143	CODE:	1368	CODE:
1144	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1145	OUTPUT:	1370	OUTPUT:
1146	RETVAL	1371	RETVAL
1147		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
1148	MODULE = Coro::State PACKAGE = Coro	1442	MODULE = Coro::State PACKAGE = Coro
1149		1443
1150	BOOT:	1444	BOOT:
1151	{	1445	{
1152	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);
1153		1454
1154	coro_stash = gv_stashpv ("Coro", TRUE);	1455	coro_stash = gv_stashpv ("Coro", TRUE);
1155		1456
1156	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1457	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1157	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1458	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1158	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1459	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1159	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1460	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1160	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1461	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1161	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1462	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1162		1463
1163	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1164	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1165
1166	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1464	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1167	coro_ready[i] = newAV ();	1465	coro_ready[i] = newAV ();
1168		1466
1169	{	1467	{
1170	SV *sv = perl_get_sv("Coro::API", 1);	1468	SV *sv = perl_get_sv("Coro::API", 1);
1171		1469
1172	coroapi.schedule = api_schedule;	1470	coroapi.schedule = api_schedule;
		1471	coroapi.save = api_save;
1173	coroapi.cede = api_cede;	1472	coroapi.cede = api_cede;
		1473	coroapi.cede_notself = api_cede_notself;
1174	coroapi.ready = api_ready;	1474	coroapi.ready = api_ready;
1175	coroapi.is_ready = api_is_ready;	1475	coroapi.is_ready = api_is_ready;
1176	coroapi.nready = &coro_nready;	1476	coroapi.nready = &coro_nready;
1177	coroapi.current = coro_current;	1477	coroapi.current = coro_current;
1178		1478
1179	GCoroAPI = &coroapi;	1479	GCoroAPI = &coroapi;
1180	sv_setiv (sv, (IV)&coroapi);	1480	sv_setiv (sv, (IV)&coroapi);
1181	SvREADONLY_on (sv);	1481	SvREADONLY_on (sv);
1182	}	1482	}
1183	}	1483	}
		1484
		1485	void
		1486	_set_current (SV *current)
		1487	PROTOTYPE: $
		1488	CODE:
		1489	SvREFCNT_dec (SvRV (coro_current));
		1490	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1184		1491
1185	int	1492	int
1186	prio (Coro::State coro, int newprio = 0)	1493	prio (Coro::State coro, int newprio = 0)
1187	ALIAS:	1494	ALIAS:
1188	nice = 1	1495	nice = 1
…		…
1191	RETVAL = coro->prio;	1498	RETVAL = coro->prio;
1192		1499
1193	if (items > 1)	1500	if (items > 1)
1194	{	1501	{
1195	if (ix)	1502	if (ix)
1196	newprio += coro->prio;	1503	newprio = coro->prio - newprio;
1197		1504
1198	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1505	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1199	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1506	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1200		1507
1201	coro->prio = newprio;	1508	coro->prio = newprio;
1202	}	1509	}
1203	}	1510	}
		1511	OUTPUT:
		1512	RETVAL
1204		1513
1205	SV *	1514	SV *
1206	ready (SV *self)	1515	ready (SV *self)
1207	PROTOTYPE: $	1516	PROTOTYPE: $
1208	CODE:	1517	CODE:
1209	RETVAL = boolSV (api_ready (self));	1518	RETVAL = boolSV (api_ready (self));
1210	OUTPUT:	1519	OUTPUT:
1211	RETVAL	1520	RETVAL
1212		1521
1213	SV *
1214	is_ready (SV *self)
1215	PROTOTYPE: $
1216	CODE:
1217	RETVAL = boolSV (api_is_ready (self));
1218	OUTPUT:
1219	RETVAL
1220
1221	int	1522	int
1222	nready (...)	1523	nready (...)
1223	PROTOTYPE:	1524	PROTOTYPE:
1224	CODE:	1525	CODE:
1225	RETVAL = coro_nready;	1526	RETVAL = coro_nready;
1226	OUTPUT:	1527	OUTPUT:
1227	RETVAL	1528	RETVAL
1228		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	av_clear (defav);
		1551
		1552	RETVAL = sv_2mortal (SvREFCNT_inc (AvARRAY (invoke_av)[0]));
		1553
		1554	if (len > 0)
		1555	{
		1556	av_extend (defav, len);
		1557	for (i = 0; i < len; ++i)
		1558	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1559	}
		1560
		1561	SvREFCNT_dec (invoke);
		1562	}
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	void
		1567	_pool_2 (...)
		1568	CODE:
		1569	{
		1570	struct coro *coro = SvSTATE (coro_current);
		1571
		1572	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1573	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1574	XSRETURN_YES;
		1575
		1576	av_clear (GvAV (PL_defgv));
		1577	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1578	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1579	coro->save = CORO_SAVE_DEF;
		1580	coro->prio = 0;
		1581	av_push (av_async_pool, newSVsv (coro_current));
		1582
		1583	XSRETURN_NO;
		1584	}
		1585
		1586
1229	MODULE = Coro::State PACKAGE = Coro::AIO	1587	MODULE = Coro::State PACKAGE = Coro::AIO
1230		1588
1231	SV *	1589	SV *
1232	_get_state ()	1590	_get_state ()
1233	CODE:	1591	CODE:
1234	{	1592	{
1235	struct {	1593	struct io_state *data;
1236	int errorno;
1237	int laststype;
1238	int laststatval;
1239	Stat_t statcache;
1240	} data;
1241		1594
		1595	RETVAL = newSV (sizeof (struct io_state));
		1596	data = (struct io_state *)SvPVX (RETVAL);
		1597	SvCUR_set (RETVAL, sizeof (struct io_state));
		1598	SvPOK_only (RETVAL);
		1599
1242	data.errorno = errno;	1600	data->errorno = errno;
1243	data.laststype = PL_laststype;	1601	data->laststype = PL_laststype;
1244	data.laststatval = PL_laststatval;	1602	data->laststatval = PL_laststatval;
1245	data.statcache = PL_statcache;	1603	data->statcache = PL_statcache;
1246
1247	RETVAL = newSVpvn ((char *)&data, sizeof data);
1248	}	1604	}
1249	OUTPUT:	1605	OUTPUT:
1250	RETVAL	1606	RETVAL
1251		1607
1252	void	1608	void
1253	_set_state (char *data_)	1609	_set_state (char *data_)
1254	PROTOTYPE: $	1610	PROTOTYPE: $
1255	CODE:	1611	CODE:
1256	{	1612	{
1257	struct {	1613	struct io_state *data = (void *)data_;
1258	int errorno;
1259	int laststype;
1260	int laststatval;
1261	Stat_t statcache;
1262	} *data = (void *)data_;
1263		1614
1264	errno = data->errorno;	1615	errno = data->errorno;
1265	PL_laststype = data->laststype;	1616	PL_laststype = data->laststype;
1266	PL_laststatval = data->laststatval;	1617	PL_laststatval = data->laststatval;
1267	PL_statcache = data->statcache;	1618	PL_statcache = data->statcache;
1268	}	1619	}
		1620

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