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Comparing Coro/Coro/State.xs (file contents):
Revision 1.109 by root, Mon Nov 27 18:45:29 2006 UTC vs.
Revision 1.164 by root, Tue Sep 25 01:47:23 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#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	#if USE_VALGRIND	159	#if CORO_USE_VALGRIND
125	int valgrind_id;	160	int valgrind_id;
126	#endif	161	#endif
		162	char inuse, mapped;
127	} coro_cctx;	163	} coro_cctx;
		164
		165	enum {
		166	CF_RUNNING = 0x0001, /* coroutine is running */
		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 */
		170	};
128		171
129	/* this is a structure representing a perl-level coroutine */	172	/* this is a structure representing a perl-level coroutine */
130	struct coro {	173	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	174	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	175	coro_cctx *cctx;
133		176
134	/* data associated with this coroutine (initial args) */	177	/* data associated with this coroutine (initial args) */
135	AV *args;	178	AV *args;
136	int refcnt;	179	int refcnt;
		180	int save; /* CORO_SAVE flags */
		181	int flags; /* CF_ flags */
137		182
138	/* optionally saved, might be zero */	183	/* optionally saved, might be zero */
139	AV *defav;	184	AV *defav; /* @_ */
140	SV *defsv;	185	SV *defsv; /* $_ */
141	SV *errsv;	186	SV *errsv; /* $@ */
		187	GV *deffh; /* default filehandle */
		188	SV *irssv; /* $/ */
		189	SV *irssv_sv; /* real $/ cache */
142		190
143	#define VAR(name,type) type name;	191	#define VAR(name,type) type name;
144	# include "state.h"	192	# include "state.h"
145	#undef VAR	193	#undef VAR
146		194
147	/* coro process data */	195	/* coro process data */
148	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 */
149	};	201	};
150		202
151	typedef struct coro *Coro__State;	203	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	204	typedef struct coro *Coro__State_or_hashref;
153		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
154	static AV *	223	static AV *
155	coro_clone_padlist (CV *cv)	224	coro_clone_padlist (pTHX_ CV *cv)
156	{	225	{
157	AV *padlist = CvPADLIST (cv);	226	AV *padlist = CvPADLIST (cv);
158	AV *newpadlist, *newpad;	227	AV *newpadlist, *newpad;
159		228
160	newpadlist = newAV ();	229	newpadlist = newAV ();
…		…
172		241
173	return newpadlist;	242	return newpadlist;
174	}	243	}
175		244
176	static void	245	static void
177	free_padlist (AV *padlist)	246	free_padlist (pTHX_ AV *padlist)
178	{	247	{
179	/* may be during global destruction */	248	/* may be during global destruction */
180	if (SvREFCNT (padlist))	249	if (SvREFCNT (padlist))
181	{	250	{
182	I32 i = AvFILLp (padlist);	251	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	272	AV *padlist;
204	AV *av = (AV *)mg->mg_obj;	273	AV *av = (AV *)mg->mg_obj;
205		274
206	/* casting is fun. */	275	/* casting is fun. */
207	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	276	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
208	free_padlist (padlist);	277	free_padlist (aTHX_ padlist);
209		278
210	SvREFCNT_dec (av);	279	SvREFCNT_dec (av);
211		280
212	return 0;	281	return 0;
213	}	282	}
…		…
223	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
224	: 0	293	: 0
225		294
226	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
227	static void	296	static void
228	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
229	{	298	{
230	MAGIC *mg = CORO_MAGIC (cv);	299	MAGIC *mg = CORO_MAGIC (cv);
231	AV *av;	300	AV *av;
232		301
233	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	304	else
236	{	305	{
237	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
238	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
243	#else	312	#else
244	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
245	#endif	314	#endif
246	}	315	}
247	}	316	}
248		317
249	static void	318	static void
250	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
251	{	320	{
252	MAGIC *mg = CORO_MAGIC (cv);	321	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	322	AV *av;
254		323
255	if (!mg)	324	if (!mg)
…		…
266	av_extend (av, AvMAX (av) + 1);	335	av_extend (av, AvMAX (av) + 1);
267		336
268	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
269	}	338	}
270		339
		340	/** load & save, init *******************************************************/
		341
271	#define SB do {	342	#define SB do {
272	#define SE } while (0)	343	#define SE } while (0)
273		344
274	#define LOAD(state) load_state((state));
275	#define SAVE(state,flags) save_state((state),(flags));
276
277	#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
278		346
279	static void	347	static void
280	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
281	{	349	{
282	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
283	# include "state.h"	351	# include "state.h"
284	#undef VAR	352	#undef VAR
285		353
286	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
287	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
288	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	}
289		373
290	{	374	{
291	dSP;	375	dSP;
292	CV *cv;	376	CV *cv;
293		377
294	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
295	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
296	{	380	{
297	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
298	CvDEPTH (cv) = PTR2IV (POPs);	382	CvDEPTH (cv) = PTR2IV (POPs);
299	CvPADLIST (cv) = (AV *)POPs;	383	CvPADLIST (cv) = (AV *)POPs;
300	}	384	}
301		385
302	PUTBACK;	386	PUTBACK;
303	}	387	}
304	}	388	}
305		389
306	static void	390	static void
307	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
308	{	392	{
309	{	393	{
310	dSP;	394	dSP;
311	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
312	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
315	/*	399	/*
316	* 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
317	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
318	*/	402	*/
319		403
320	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
321	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
322	for (;;)	406	for (;;)
323	{	407	{
324	while (cxix >= 0)	408	while (cxix >= 0)
325	{	409	{
326	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
327		411
328	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
329	{	413	{
330	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
331		415
332	if (CvDEPTH (cv))	416	if (CvDEPTH (cv))
333	{	417	{
334	EXTEND (SP, 3);	418	EXTEND (SP, 3);
335
336	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
337	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
338	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
339		422
340	CvDEPTH (cv) = 0;	423	CvDEPTH (cv) = 0;
341	get_padlist (cv);	424	get_padlist (aTHX_ cv);
342	}	425	}
343	}	426	}
344	#ifdef CXt_FORMAT
345	else if (CxTYPE(cx) == CXt_FORMAT)
346	{
347	/* I never used formats, so how should I know how these are implemented? */
348	/* my bold guess is as a simple, plain sub... */
349	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
350	}
351	#endif
352	}	427	}
353		428
354	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
355	break;	430	break;
356		431
357	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
358	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
359	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
360	}	435	}
361		436
362	PUTBACK;	437	PUTBACK;
363	}	438	}
364		439
365	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;
366	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
367	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;
368		445
369	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
370	# include "state.h"	447	# include "state.h"
371	#undef VAR	448	#undef VAR
372	}	449	}
…		…
375	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
376	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
377	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
378	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
379	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
380	static void	460	static void
381	coro_init_stacks ()	461	coro_init_stacks (pTHX)
382	{	462	{
383	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
384	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
385	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
386	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
387		467
388	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
389	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
390	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
391		471
392	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
393	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
394	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
395	PL_tmps_max = 96;	475	PL_tmps_max = 64;
396		476
397	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
398	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
399	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
400		480
…		…
404		484
405	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
406	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
407	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
408		488
409	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
410	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
411	PL_savestack_max = 96;	491	PL_savestack_max = 64;
412		492
413	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
414	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
415	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
416	PL_retstack_max = 8;	496	PL_retstack_max = 4;
417	#endif	497	#endif
418	}	498	}
		499	#endif
419		500
420	/*	501	/*
421	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
422	*/	503	*/
423	static void	504	static void
424	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
425	{	506	{
426	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
427	{	508	{
428	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
429	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
430		512
431	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
432	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
433		516
		517	/* unwind all extra stacks */
434	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
435	}	522	}
436		523
437	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
438	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
439		526
440	while (PL_curstackinfo)	527	while (PL_curstackinfo)
441	{	528	{
442	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
443		530
444	{ /*D*//*remove*/
445	dSP;
446	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
447	PUTBACK; /* possibly superfluous */
448	}
449
450	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
451	{
452	dounwind (-1);/*D*//*remove*/
453	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
454	}
455		533
456	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
457	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
458	PL_curstackinfo = p;	536	PL_curstackinfo = p;
459	}	537	}
…		…
465	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
466	Safefree (PL_retstack);	544	Safefree (PL_retstack);
467	#endif	545	#endif
468	}	546	}
469		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
470	static void	581	static void
471	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
472	{	583	{
473	/*	584	/*
474	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
475	*/	586	*/
476
477	coro_init_stacks ();	587	coro_init_stacks (aTHX);
478		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
479	PL_curcop = 0;	591	PL_comppad = 0;
480	PL_in_eval = 0;
481	PL_curpm = 0;	592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
482		596
483	{	597	{
484	dSP;	598	dSP;
485	LOGOP myop;	599	LOGOP myop;
486		600
487	/* I have no idea why this is needed, but it is */
488	PUSHMARK (SP);
489
490	SvREFCNT_dec (GvAV (PL_defgv));	601	SvREFCNT_dec (GvAV (PL_defgv));
491	GvAV (PL_defgv) = coro->args; coro->args = 0;	602	GvAV (PL_defgv) = coro->args; coro->args = 0;
492		603
493	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
494	myop.op_next = Nullop;	605	myop.op_next = Nullop;
495	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
496		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
497	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
498
499	PUSHMARK (SP);
500	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
501	PUTBACK;
502	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
503	SPAGAIN;	613	SPAGAIN;
504
505	ENTER; /* necessary e.g. for dounwind */
506	}	614	}
507	}
508		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
509	static void	619	static void
510	free_coro_mortal ()	620	free_coro_mortal (pTHX)
511	{	621	{
512	if (coro_mortal)	622	if (coro_mortal)
513	{	623	{
514	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
515	coro_mortal = 0;	625	coro_mortal = 0;
516	}	626	}
517	}	627	}
518		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 */
519	static void NOINLINE	632	static void NOINLINE
520	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
521	{	634	{
522	dSP;	635	dSP;
523	LOGOP myop;	636	LOGOP myop;
524		637
525	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
526	myop.op_next = PL_op;	639	myop.op_next = PL_op;
527	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
528
529	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
530		641
531	PUSHMARK (SP);	642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
532	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
533	PUTBACK;	646	PUTBACK;
		647	PL_op = (OP *)&myop;
534	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	649	SPAGAIN;
536	}	650	}
537		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
538	static void	655	static void
539	coro_run (void *arg)	656	coro_run (void *arg)
540	{	657	{
		658	dTHX;
		659
541	/* coro_run is the alternative epilogue of transfer() */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
542	UNLOCK;	661	UNLOCK;
543		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
544	/*	672	/*
545	* 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
546	*/	678	*/
547	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
548		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
549	/* inject call to cctx_init */
550	prepare_cctx ((coro_cctx *)arg);
551
552	/* somebody will hit me for both perl_run and PL_restartop */
553	perl_run (PL_curinterp);
554
555	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
556	abort ();
557	}	681	}
558		682
559	static coro_cctx *	683	static coro_cctx *
560	cctx_new ()	684	cctx_new ()
561	{	685	{
562	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
563		689
564	++cctx_count;	690	++cctx_count;
565		691
566	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
567		693
568	#if HAVE_MMAP	694	#if HAVE_MMAP
569		695
570	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
571	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
572	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);
573		699
574	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
575	{
576	perror ("FATAL: unable to mmap stack for coroutine");
577	_exit (EXIT_FAILURE);
578	}	701	{
579
580	# if STACKGUARD	702	# if CORO_STACKGUARD
581	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
582	# 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);
583		714
584	#else
585
586	cctx->ssize = STACKSIZE * (long)sizeof (long);
587	New (0, cctx->sptr, STACKSIZE, long);
588
589	if (!cctx->sptr)	715	if (!cctx->sptr)
590	{	716	{
591	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
592	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
593	}	719	}
594		720
595	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
596		724
597	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
598	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
599	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
600	cctx->ssize + (char *)cctx->sptr
601	);
602	#endif
603
604	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);
605		727
606	return cctx;	728	return cctx;
607	}	729	}
608		730
609	static void	731	static void
610	cctx_free (coro_cctx *cctx)	732	cctx_destroy (coro_cctx *cctx)
611	{	733	{
612	if (!cctx)	734	if (!cctx)
613	return;	735	return;
614		736
615	--cctx_count;	737	--cctx_count;
616		738
617	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
618	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
619	#endif	741	#endif
620		742
621	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
622	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
623	#else	746	else
		747	#endif
624	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
625	#endif
626		749
627	Safefree (cctx);	750	Safefree (cctx);
628	}	751	}
629		752
630	static coro_cctx *	753	static coro_cctx *
631	cctx_get ()	754	cctx_get (pTHX)
632	{	755	{
633	coro_cctx *cctx;
634
635	if (cctx_first)	756	while (cctx_first)
636	{	757	{
		758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
637	--cctx_idle;	760	--cctx_idle;
638	cctx = cctx_first;	761
639	cctx_first = cctx->next;	762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
640	}	766	}
641	else	767
642	{
643	cctx = cctx_new ();
644	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
645	}
646
647	return cctx;	769	return cctx_new ();
648	}	770	}
649		771
650	static void	772	static void
651	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
652	{	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
653	++cctx_idle;	786	++cctx_idle;
654	cctx->next = cctx_first;	787	cctx->next = cctx_first;
655	cctx_first = cctx;	788	cctx_first = cctx;
656	}	789	}
657		790
		791	/** coroutine switching *****************************************************/
		792
658	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
659	static void NOINLINE	794	static void NOINLINE
660	transfer (struct coro *prev, struct coro *next, int flags)	795	transfer (pTHX_ struct coro *prev, struct coro *next)
661	{	796	{
662	dSTACKLEVEL;	797	dSTACKLEVEL;
663		798
664	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
665	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
666	((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	}
667	else if (prev != next)	805	else if (prev != next)
668	{	806	{
669	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
670		808
		809	if (prev->flags & CF_NEW)
		810	{
		811	/* create a new empty context */
		812	Newz (0, prev->cctx, 1, coro_cctx);
		813	prev->cctx->inuse = 1;
		814	prev->flags &= ~CF_NEW;
		815	prev->flags |= CF_RUNNING;
		816	}
		817
		818	/*TODO: must not croak here */
		819	if (!prev->flags & CF_RUNNING)
		820	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		821
		822	if (next->flags & CF_RUNNING)
		823	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		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
		828	prev->flags &= ~CF_RUNNING;
		829	next->flags |= CF_RUNNING;
		830
671	LOCK;	831	LOCK;
672		832
673	if (next->mainstack)	833	if (next->flags & CF_NEW)
674	{	834	{
675	/* coroutine already started */	835	/* need to start coroutine */
676	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
677	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);
678	}	843	}
679	else	844	else
680	{	845	{
681	/* need to start coroutine */	846	/* coroutine already started */
682	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
683	SAVE (prev, -1);	848	load_perl (aTHX_ next);
684	/* setup coroutine call */
685	setup_coro (next);
686	/* need a stack */
687	next->cctx = 0;
688	}	849	}
689
690	if (!prev->cctx)
691	/* create a new empty context */
692	Newz (0, prev->cctx, 1, coro_cctx);
693		850
694	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
695		852
696	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
697	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
698	{	855	{
		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;
		860
699	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
700	prev->cctx = 0;	862	prev__cctx->inuse = 0;
701	}	863	}
702		864
703	if (!next->cctx)	865	if (!next->cctx)
		866	{
704	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
		868	assert (!next->cctx->inuse);
		869	next->cctx->inuse = 1;
		870	}
705		871
706	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
707	{	873	{
708	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
709	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
710	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
711	}	877	}
712		878
713	free_coro_mortal ();	879	free_coro_mortal (aTHX);
714
715	UNLOCK;	880	UNLOCK;
716	}	881	}
717	}	882	}
718		883
719	struct transfer_args	884	struct transfer_args
720	{	885	{
721	struct coro *prev, *next;	886	struct coro *prev, *next;
722	int flags;
723	};	887	};
724		888
725	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
726		890
		891	/** high level stuff ********************************************************/
		892
727	static void	893	static int
728	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
729	{	895	{
730	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
731	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 */
732		911
733	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
734	{	913	{
735	struct coro temp;	914	struct coro temp;
736		915
737	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
738	LOAD (coro);
739		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
740	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
741		928
742	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
743		930
744	coro->mainstack = 0;	931	coro->mainstack = 0;
745	}	932	}
746		933
747	cctx_free (coro->cctx);	934	cctx_destroy (coro->cctx);
748	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
749	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;
750	}	942	}
751		943
752	static int	944	static int
753	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	945	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
754	{	946	{
755	struct coro *coro = (struct coro *)mg->mg_ptr;	947	struct coro *coro = (struct coro *)mg->mg_ptr;
756	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
757		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
758	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
759		957
760	return 0;	958	return 0;
761	}	959	}
762		960
763	static int	961	static int
…		…
770	return 0;	968	return 0;
771	}	969	}
772		970
773	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
774	0, 0, 0, 0,	972	0, 0, 0, 0,
775	coro_state_clear,	973	coro_state_free,
776	0,	974	0,
777	#ifdef MGf_DUP	975	#ifdef MGf_DUP
778	coro_state_dup,	976	coro_state_dup,
779	#else	977	#else
780	# define MGf_DUP 0	978	# define MGf_DUP 0
781	#endif	979	#endif
782	};	980	};
783		981
784	static struct coro *	982	static struct coro *
785	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
786	{	984	{
787	HV *stash;	985	HV *stash;
788	MAGIC *mg;	986	MAGIC *mg;
789		987
790	if (SvROK (coro))	988	if (SvROK (coro))
…		…
796	/* very slow, but rare, check */	994	/* very slow, but rare, check */
797	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
798	croak ("Coro::State object required");	996	croak ("Coro::State object required");
799	}	997	}
800		998
801	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
802	assert (mg->mg_type == PERL_MAGIC_ext);
803	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
804	}	1001	}
805		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
806	static void	1005	static void
807	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)
808	{	1007	{
809	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
810	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
811	ta->flags = flags;
812	}	1010	}
813		1011
814	static void	1012	static void
815	api_transfer (SV *prev, SV *next, int flags)	1013	api_transfer (SV *prev_sv, SV *next_sv)
816	{	1014	{
817	dTHX;	1015	dTHX;
818	struct transfer_args ta;	1016	struct transfer_args ta;
819		1017
820	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
821	TRANSFER (ta);	1019	TRANSFER (ta);
822	}	1020	}
823		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
824	/** Coro ********************************************************************/	1035	/** Coro ********************************************************************/
825		1036
826	#define PRIO_MAX 3
827	#define PRIO_HIGH 1
828	#define PRIO_NORMAL 0
829	#define PRIO_LOW -1
830	#define PRIO_IDLE -3
831	#define PRIO_MIN -4
832
833	/* for Coro.pm */
834	static GV *coro_current, *coro_idle;
835	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
836	static int coro_nready;
837
838	static void	1037	static void
839	coro_enq (SV *sv)	1038	coro_enq (pTHX_ SV *coro_sv)
840	{	1039	{
841	int prio;
842
843	if (SvTYPE (sv) != SVt_PVHV)
844	croak ("Coro::ready tried to enqueue something that is not a coroutine");
845
846	prio = SvSTATE (sv)->prio;
847
848	av_push (coro_ready [prio - PRIO_MIN], sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
849	coro_nready++;
850	}	1041	}
851		1042
852	static SV *	1043	static SV *
853	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
854	{	1045	{
855	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
856		1047
857	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
858	if (min_prio < 0)	1049	if (min_prio < 0)
859	min_prio = 0;	1050	min_prio = 0;
860		1051
861	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
862	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
863	{
864	coro_nready--;
865	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
866	}
867		1055
868	return 0;	1056	return 0;
869	}	1057	}
870		1058
871	static void	1059	static int
872	api_ready (SV *coro)	1060	api_ready (SV *coro_sv)
873	{	1061	{
874	dTHX;	1062	dTHX;
		1063	struct coro *coro;
875		1064
876	if (SvROK (coro))	1065	if (SvROK (coro_sv))
877	coro = SvRV (coro);	1066	coro_sv = SvRV (coro_sv);
		1067
		1068	coro = SvSTATE (coro_sv);
		1069
		1070	if (coro->flags & CF_READY)
		1071	return 0;
		1072
		1073	coro->flags |= CF_READY;
878		1074
879	LOCK;	1075	LOCK;
880	coro_enq (SvREFCNT_inc (coro));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
881	UNLOCK;	1078	UNLOCK;
882	}
883		1079
		1080	return 1;
		1081	}
		1082
884	static void	1083	static int
		1084	api_is_ready (SV *coro_sv)
		1085	{
		1086	dTHX;
		1087	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1088	}
		1089
		1090	static void
885	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
886	{	1092	{
887	SV *current, *prev, *next;	1093	SV *prev_sv, *next_sv;
888
889	current = GvSV (coro_current);
890		1094
891	for (;;)	1095	for (;;)
892	{	1096	{
893	LOCK;	1097	LOCK;
894	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;
895	UNLOCK;	1130	UNLOCK;
896
897	if (next)
898	break;	1131	break;
899
900	{
901	dSP;
902
903	ENTER;
904	SAVETMPS;
905
906	PUSHMARK (SP);
907	PUTBACK;
908	call_sv (GvSV (coro_idle), G_DISCARD);
909
910	FREETMPS;
911	LEAVE;
912	}	1132	}
913	}
914
915	prev = SvRV (current);
916	SvRV (current) = next;
917		1133
918	/* 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
919	LOCK;	1142	LOCK;
920	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
921	UNLOCK;	1145	UNLOCK;
922	coro_mortal = prev;
923
924	ta->prev = SvSTATE (prev);
925	ta->next = SvSTATE (next);
926	ta->flags = TRANSFER_SAVE_ALL;
927	}	1146	}
928		1147
929	static void	1148	static void
930	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
931	{	1150	{
932	LOCK;	1151	api_ready (coro_current);
933	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
934	UNLOCK;
935
936	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;
937	}	1167	}
938		1168
939	static void	1169	static void
940	api_schedule (void)	1170	api_schedule (void)
941	{	1171	{
942	dTHX;	1172	dTHX;
943	struct transfer_args ta;	1173	struct transfer_args ta;
944		1174
945	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
946	TRANSFER (ta);	1176	TRANSFER (ta);
947	}	1177	}
948		1178
949	static void	1179	static int
950	api_cede (void)	1180	api_cede (void)
951	{	1181	{
952	dTHX;	1182	dTHX;
953	struct transfer_args ta;	1183	struct transfer_args ta;
954		1184
955	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
956	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;
957	}	1209	}
958		1210
959	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
960		1212
961	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
967	#endif	1219	#endif
968	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
969		1221
970	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
971		1223
972	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
973	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
974	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));
975		1231
976	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;
977		1237
978	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
979	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
980		1240
981	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
989	HV *hv;	1249	HV *hv;
990	int i;	1250	int i;
991		1251
992	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
993	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
994		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
995	hv = newHV ();	1261	coro->hv = hv = newHV ();
996	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;
997	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
998		1264
999	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
1000	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
1001	}	1267	}
1002	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:
1003	RETVAL	1287	RETVAL
1004		1288
1005	void	1289	void
1006	_set_stacklevel (...)	1290	_set_stacklevel (...)
1007	ALIAS:	1291	ALIAS:
1008	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1009	Coro::schedule = 2	1293	Coro::schedule = 2
1010	Coro::cede = 3	1294	Coro::cede = 3
1011	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1012	CODE:	1296	CODE:
1013	{	1297	{
1014	struct transfer_args ta;	1298	struct transfer_args ta;
1015		1299
1016	switch (ix)	1300	switch (ix)
1017	{	1301	{
1018	case 0:	1302	case 0:
1019	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1303	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1020	ta.next = 0;	1304	ta.next = 0;
1021	ta.flags = TRANSFER_SET_STACKLEVEL;
1022	break;	1305	break;
1023		1306
1024	case 1:	1307	case 1:
1025	if (items != 3)	1308	if (items != 2)
1026	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);
1027		1310
1028	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1029	break;	1312	break;
1030		1313
1031	case 2:	1314	case 2:
1032	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1033	break;	1316	break;
1034		1317
1035	case 3:	1318	case 3:
1036	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1037	break;	1320	break;
1038		1321
1039	case 4:	1322	case 4:
1040	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1041	SV *yieldstack;	1324	XSRETURN_EMPTY;
1042	SV *sv;
1043	AV *defav = GvAV (PL_defgv);
1044		1325
1045	yieldstack = *hv_fetch (
1046	(HV *)SvRV (GvSV (coro_current)),
1047	"yieldstack", sizeof ("yieldstack") - 1,
1048	0
1049	);
1050
1051	/* set up @_ -- ugly */
1052	av_clear (defav);
1053	av_fill (defav, items - 1);
1054	while (items--)
1055	av_store (defav, items, SvREFCNT_inc (ST(items)));
1056
1057	sv = av_pop ((AV *)SvRV (yieldstack));
1058	ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1059	ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1060	ta.flags = 0;
1061	SvREFCNT_dec (sv);
1062	}
1063	break;	1326	break;
1064
1065	}	1327	}
1066		1328
		1329	BARRIER;
1067	TRANSFER (ta);	1330	TRANSFER (ta);
1068	}
1069		1331
1070	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1071	_clone_state_from (SV *dst, SV *src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1072	CODE:	1338	CODE:
1073	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1074	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1075		1341	RETVAL
1076	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1077
1078	++coro_src->refcnt;
1079	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1080	}
1081		1342
1082	void	1343	void
1083	_exit (code)	1344	_exit (code)
1084	int code	1345	int code
1085	PROTOTYPE: $	1346	PROTOTYPE: $
1086	CODE:	1347	CODE:
1087	_exit (code);	1348	_exit (code);
1088		1349
1089	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
1090	cctx_count ()	1360	cctx_count ()
1091	CODE:	1361	CODE:
1092	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1093	OUTPUT:	1363	OUTPUT:
1094	RETVAL	1364	RETVAL
…		…
1098	CODE:	1368	CODE:
1099	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1100	OUTPUT:	1370	OUTPUT:
1101	RETVAL	1371	RETVAL
1102		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	call (Coro::State coro, SV *coderef)
		1385	ALIAS:
		1386	eval = 1
		1387	CODE:
		1388	{
		1389	if (coro->mainstack)
		1390	{
		1391	struct coro temp;
		1392	Zero (&temp, 1, struct coro);
		1393	temp.save = CORO_SAVE_ALL;
		1394
		1395	if (!(coro->flags & CF_RUNNING))
		1396	{
		1397	save_perl (aTHX_ &temp);
		1398	load_perl (aTHX_ coro);
		1399	}
		1400
		1401	{
		1402	dSP;
		1403	ENTER;
		1404	SAVETMPS;
		1405	PUSHMARK (SP);
		1406	PUTBACK;
		1407	if (ix)
		1408	eval_sv (coderef, 0);
		1409	else
		1410	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1411	SPAGAIN;
		1412	FREETMPS;
		1413	LEAVE;
		1414	PUTBACK;
		1415	}
		1416
		1417	if (!(coro->flags & CF_RUNNING))
		1418	{
		1419	save_perl (aTHX_ coro);
		1420	load_perl (aTHX_ &temp);
		1421	}
		1422	}
		1423	}
		1424
		1425	SV *
		1426	is_ready (Coro::State coro)
		1427	PROTOTYPE: $
		1428	ALIAS:
		1429	is_ready = CF_READY
		1430	is_running = CF_RUNNING
		1431	is_new = CF_NEW
		1432	is_destroyed = CF_DESTROYED
		1433	CODE:
		1434	RETVAL = boolSV (coro->flags & ix);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	SV *
		1439	has_stack (Coro::State coro)
		1440	PROTOTYPE: $
		1441	CODE:
		1442	RETVAL = boolSV (!!coro->cctx);
		1443	OUTPUT:
		1444	RETVAL
		1445
		1446	IV
		1447	rss (Coro::State coro)
		1448	PROTOTYPE: $
		1449	CODE:
		1450	RETVAL = coro_rss (coro);
		1451	OUTPUT:
		1452	RETVAL
		1453
		1454
1103	MODULE = Coro::State PACKAGE = Coro	1455	MODULE = Coro::State PACKAGE = Coro
1104		1456
1105	BOOT:	1457	BOOT:
1106	{	1458	{
1107	int i;	1459	int i;
		1460
		1461	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1462	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1463	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1464
		1465	coro_current = get_sv ("Coro::current", FALSE);
		1466	SvREADONLY_on (coro_current);
1108		1467
1109	coro_stash = gv_stashpv ("Coro", TRUE);	1468	coro_stash = gv_stashpv ("Coro", TRUE);
1110		1469
1111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1470	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1471	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1472	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1473	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1474	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1475	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1117		1476
1118	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1119	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1120
1121	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1477	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1122	coro_ready[i] = newAV ();	1478	coro_ready[i] = newAV ();
1123		1479
1124	{	1480	{
1125	SV *sv = perl_get_sv("Coro::API", 1);	1481	SV *sv = perl_get_sv("Coro::API", 1);
1126		1482
1127	coroapi.schedule = api_schedule;	1483	coroapi.schedule = api_schedule;
		1484	coroapi.save = api_save;
1128	coroapi.cede = api_cede;	1485	coroapi.cede = api_cede;
		1486	coroapi.cede_notself = api_cede_notself;
1129	coroapi.ready = api_ready;	1487	coroapi.ready = api_ready;
		1488	coroapi.is_ready = api_is_ready;
1130	coroapi.nready = &coro_nready;	1489	coroapi.nready = &coro_nready;
1131	coroapi.current = coro_current;	1490	coroapi.current = coro_current;
1132		1491
1133	GCoroAPI = &coroapi;	1492	GCoroAPI = &coroapi;
1134	sv_setiv (sv, (IV)&coroapi);	1493	sv_setiv (sv, (IV)&coroapi);
1135	SvREADONLY_on (sv);	1494	SvREADONLY_on (sv);
1136	}	1495	}
1137	}	1496	}
		1497
		1498	void
		1499	_set_current (SV *current)
		1500	PROTOTYPE: $
		1501	CODE:
		1502	SvREFCNT_dec (SvRV (coro_current));
		1503	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1138		1504
1139	int	1505	int
1140	prio (Coro::State coro, int newprio = 0)	1506	prio (Coro::State coro, int newprio = 0)
1141	ALIAS:	1507	ALIAS:
1142	nice = 1	1508	nice = 1
…		…
1145	RETVAL = coro->prio;	1511	RETVAL = coro->prio;
1146		1512
1147	if (items > 1)	1513	if (items > 1)
1148	{	1514	{
1149	if (ix)	1515	if (ix)
1150	newprio += coro->prio;	1516	newprio = coro->prio - newprio;
1151		1517
1152	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1518	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1153	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1519	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1154		1520
1155	coro->prio = newprio;	1521	coro->prio = newprio;
1156	}	1522	}
1157	}	1523	}
		1524	OUTPUT:
		1525	RETVAL
1158		1526
1159	void	1527	SV *
1160	ready (SV *self)	1528	ready (SV *self)
1161	PROTOTYPE: $	1529	PROTOTYPE: $
1162	CODE:	1530	CODE:
1163	api_ready (self);	1531	RETVAL = boolSV (api_ready (self));
		1532	OUTPUT:
		1533	RETVAL
1164		1534
1165	int	1535	int
1166	nready (...)	1536	nready (...)
1167	PROTOTYPE:	1537	PROTOTYPE:
1168	CODE:	1538	CODE:
1169	RETVAL = coro_nready;	1539	RETVAL = coro_nready;
1170	OUTPUT:	1540	OUTPUT:
1171	RETVAL	1541	RETVAL
1172		1542
		1543	# for async_pool speedup
		1544	void
		1545	_pool_1 (SV *cb)
		1546	CODE:
		1547	{
		1548	int i, len;
		1549	HV *hv = (HV *)SvRV (coro_current);
		1550	AV *defav = GvAV (PL_defgv);
		1551	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1552	AV *invoke_av;
		1553
		1554	if (!invoke)
		1555	croak ("\3terminate\2\n");
		1556
		1557	hv_store (hv, "desc", sizeof ("desc") - 1,
		1558	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1559
		1560	invoke_av = (AV *)SvRV (invoke);
		1561	len = av_len (invoke_av);
		1562
		1563	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1564
		1565	if (len > 0)
		1566	{
		1567	av_fill (defav, len - 1);
		1568	for (i = 0; i < len; ++i)
		1569	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1570	}
		1571
		1572	SvREFCNT_dec (invoke);
		1573	}
		1574
		1575	void
		1576	_pool_2 (SV *cb)
		1577	CODE:
		1578	{
		1579	struct coro *coro = SvSTATE (coro_current);
		1580
		1581	sv_setsv (cb, &PL_sv_undef);
		1582
		1583	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1584	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1585	croak ("\3terminate\2\n");
		1586
		1587	av_clear (GvAV (PL_defgv));
		1588	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1589	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1590	coro->save = CORO_SAVE_DEF;
		1591	coro->prio = 0;
		1592	av_push (av_async_pool, newSVsv (coro_current));
		1593	}
		1594
		1595
1173	MODULE = Coro::State PACKAGE = Coro::AIO	1596	MODULE = Coro::State PACKAGE = Coro::AIO
1174		1597
1175	SV *	1598	SV *
1176	_get_state ()	1599	_get_state ()
1177	CODE:	1600	CODE:
1178	{	1601	{
1179	struct {	1602	struct io_state *data;
1180	int errorno;
1181	int laststype;
1182	int laststatval;
1183	Stat_t statcache;
1184	} data;
1185		1603
		1604	RETVAL = newSV (sizeof (struct io_state));
		1605	data = (struct io_state *)SvPVX (RETVAL);
		1606	SvCUR_set (RETVAL, sizeof (struct io_state));
		1607	SvPOK_only (RETVAL);
		1608
1186	data.errorno = errno;	1609	data->errorno = errno;
1187	data.laststype = PL_laststype;	1610	data->laststype = PL_laststype;
1188	data.laststatval = PL_laststatval;	1611	data->laststatval = PL_laststatval;
1189	data.statcache = PL_statcache;	1612	data->statcache = PL_statcache;
1190
1191	RETVAL = newSVpvn ((char *)&data, sizeof data);
1192	}	1613	}
1193	OUTPUT:	1614	OUTPUT:
1194	RETVAL	1615	RETVAL
1195		1616
1196	void	1617	void
1197	_set_state (char *data_)	1618	_set_state (char *data_)
1198	PROTOTYPE: $	1619	PROTOTYPE: $
1199	CODE:	1620	CODE:
1200	{	1621	{
1201	struct {	1622	struct io_state *data = (void *)data_;
1202	int errorno;
1203	int laststype;
1204	int laststatval;
1205	Stat_t statcache;
1206	} *data = (void *)data_;
1207		1623
1208	errno = data->errorno;	1624	errno = data->errorno;
1209	PL_laststype = data->laststype;	1625	PL_laststype = data->laststype;
1210	PL_laststatval = data->laststatval;	1626	PL_laststatval = data->laststatval;
1211	PL_statcache = data->statcache;	1627	PL_statcache = data->statcache;
1212	}	1628	}
		1629

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