ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.157 by root, Fri Sep 21 02:01:13 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	|| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		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
77	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macro should declare a variable stacklevel that contains and approximation
78	* to the current C stack pointer. Its property is that it changes with each call	94	* to the current C stack pointer. Its property is that it changes with each call
79	* and should be unique. */	95	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
82		98
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		100
85	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	104	#else
88	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
89	#endif	107	#endif
90		108
91	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
92		110
93	#include "CoroAPI.h"	111	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		112
97	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	117	#else
102	# define LOCK (void)0	118	# define LOCK (void)0
103	# define UNLOCK (void)0	119	# define UNLOCK (void)0
104	#endif	120	#endif
105		121
		122	/* helper storage struct for Coro::AIO */
106	struct io_state	123	struct io_state
107	{	124	{
108	int errorno;	125	int errorno;
109	I32 laststype;	126	I32 laststype;
110	int laststatval;	127	int laststatval;
111	Stat_t statcache;	128	Stat_t statcache;
112	};	129	};
113		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
114	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
115	static AV *main_mainstack; /* used to differentiate between $main and others */	133	static AV *main_mainstack; /* used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
116	static HV *coro_state_stash, *coro_stash;	135	static HV *coro_state_stash, *coro_stash;
117	static SV *coro_mortal; /* will be freed after next transfer */	136	static SV *coro_mortal; /* will be freed after next transfer */
118		137
119	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
120	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
123	typedef struct coro_cctx {	142	typedef struct coro_cctx {
124	struct coro_cctx *next;	143	struct coro_cctx *next;
125		144
126	/* the stack */	145	/* the stack */
127	void *sptr;	146	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
129		148
130	/* cpu state */	149	/* cpu state */
131	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	150	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		151	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
132	JMPENV *top_env;	152	JMPENV *top_env;
133	coro_context cctx;	153	coro_context cctx;
134		154
135	int inuse;
136
137	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
138	int valgrind_id;	156	int valgrind_id;
139	#endif	157	#endif
		158	char inuse, mapped;
140	} coro_cctx;	159	} coro_cctx;
141		160
142	enum {	161	enum {
143	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
144	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
145	CF_NEW = 0x0004, /* ahs never been switched to */	164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
146	};	166	};
147		167
148	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
149	struct coro {	169	struct coro {
150	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
151	coro_cctx *cctx;	171	coro_cctx *cctx;
152		172
153	/* data associated with this coroutine (initial args) */	173	/* data associated with this coroutine (initial args) */
154	AV *args;	174	AV *args;
155	int refcnt;	175	int refcnt;
156	int flags;	176	int save; /* CORO_SAVE flags */
		177	int flags; /* CF_ flags */
157		178
158	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
159	AV *defav;	180	AV *defav; /* @_ */
160	SV *defsv;	181	SV *defsv; /* $_ */
161	SV *errsv;	182	SV *errsv; /* $@ */
		183	GV *deffh; /* default filehandle */
		184	SV *irssv; /* $/ */
		185	SV *irssv_sv; /* real $/ cache */
162		186
163	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
164	# include "state.h"	188	# include "state.h"
165	#undef VAR	189	#undef VAR
166		190
167	/* coro process data */	191	/* coro process data */
168	int prio;	192	int prio;
		193
		194	/* linked list */
		195	struct coro *next, *prev;
		196	HV *hv; /* the perl hash associated with this coro, if any */
169	};	197	};
170		198
171	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
173		201
		202	/** Coro ********************************************************************/
		203
		204	#define PRIO_MAX 3
		205	#define PRIO_HIGH 1
		206	#define PRIO_NORMAL 0
		207	#define PRIO_LOW -1
		208	#define PRIO_IDLE -3
		209	#define PRIO_MIN -4
		210
		211	/* for Coro.pm */
		212	static SV *coro_current;
		213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		214	static int coro_nready;
		215	static struct coro *coro_first;
		216
		217	/** lowlevel stuff **********************************************************/
		218
174	static AV *	219	static AV *
175	coro_clone_padlist (CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
176	{	221	{
177	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
178	AV *newpadlist, *newpad;	223	AV *newpadlist, *newpad;
179		224
180	newpadlist = newAV ();	225	newpadlist = newAV ();
…		…
192		237
193	return newpadlist;	238	return newpadlist;
194	}	239	}
195		240
196	static void	241	static void
197	free_padlist (AV *padlist)	242	free_padlist (pTHX_ AV *padlist)
198	{	243	{
199	/* may be during global destruction */	244	/* may be during global destruction */
200	if (SvREFCNT (padlist))	245	if (SvREFCNT (padlist))
201	{	246	{
202	I32 i = AvFILLp (padlist);	247	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	268	AV *padlist;
224	AV *av = (AV *)mg->mg_obj;	269	AV *av = (AV *)mg->mg_obj;
225		270
226	/* casting is fun. */	271	/* casting is fun. */
227	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	272	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
228	free_padlist (padlist);	273	free_padlist (aTHX_ padlist);
229		274
230	SvREFCNT_dec (av);	275	SvREFCNT_dec (av);
231		276
232	return 0;	277	return 0;
233	}	278	}
…		…
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	289	: 0
245		290
246	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
247	static void	292	static void
248	get_padlist (CV *cv)	293	get_padlist (pTHX_ CV *cv)
249	{	294	{
250	MAGIC *mg = CORO_MAGIC (cv);	295	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	296	AV *av;
252		297
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	300	else
256	{	301	{
257	#if 0	302	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	303	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	304	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
263	#else	308	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	310	#endif
266	}	311	}
267	}	312	}
268		313
269	static void	314	static void
270	put_padlist (CV *cv)	315	put_padlist (pTHX_ CV *cv)
271	{	316	{
272	MAGIC *mg = CORO_MAGIC (cv);	317	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	318	AV *av;
274		319
275	if (!mg)	320	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	331	av_extend (av, AvMAX (av) + 1);
287		332
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	334	}
290		335
		336	/** load & save, init *******************************************************/
		337
291	#define SB do {	338	#define SB do {
292	#define SE } while (0)	339	#define SE } while (0)
293		340
294	#define LOAD(state) load_state ((state))
295	#define SAVE(state,flags) save_state ((state),(flags))
296
297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298		342
299	static void	343	static void
300	load_state (Coro__State c)	344	load_perl (pTHX_ Coro__State c)
301	{	345	{
302	#define VAR(name,type) PL_ ## name = c->name;	346	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	347	# include "state.h"
304	#undef VAR	348	#undef VAR
305		349
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		354
		355	if (c->irssv)
		356	{
		357	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		358	{
		359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
		362	else
		363	{
		364	REPLACE_SV (PL_rs, c->irssv);
		365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		366	sv_setsv (c->irssv_sv, PL_rs);
		367	}
		368	}
309		369
310	{	370	{
311	dSP;	371	dSP;
312	CV *cv;	372	CV *cv;
313		373
314	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
316	{	376	{
317	put_padlist (cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
318	CvDEPTH (cv) = PTR2IV (POPs);	378	CvDEPTH (cv) = PTR2IV (POPs);
319	CvPADLIST (cv) = (AV *)POPs;	379	CvPADLIST (cv) = (AV *)POPs;
320	}	380	}
321		381
322	PUTBACK;	382	PUTBACK;
323	}	383	}
324	}	384	}
325		385
326	static void	386	static void
327	save_state (Coro__State c, int flags)	387	save_perl (pTHX_ Coro__State c)
328	{	388	{
329	{	389	{
330	dSP;	390	dSP;
331	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
335	/*	395	/*
336	* the worst thing you can imagine happens first - we have to save	396	* the worst thing you can imagine happens first - we have to save
337	* (and reinitialize) all cv's in the whole callchain :(	397	* (and reinitialize) all cv's in the whole callchain :(
338	*/	398	*/
339		399
340	PUSHs (Nullsv);	400	XPUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	401	/* this loop was inspired by pp_caller */
342	for (;;)	402	for (;;)
343	{	403	{
344	while (cxix >= 0)	404	while (cxix >= 0)
345	{	405	{
346	PERL_CONTEXT *cx = &ccstk[cxix--];	406	PERL_CONTEXT *cx = &ccstk[cxix--];
347		407
348	if (CxTYPE (cx) == CXt_SUB)	408	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
349	{	409	{
350	CV *cv = cx->blk_sub.cv;	410	CV *cv = cx->blk_sub.cv;
351		411
352	if (CvDEPTH (cv))	412	if (CvDEPTH (cv))
353	{	413	{
354	EXTEND (SP, 3);	414	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	415	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	416	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	417	PUSHs ((SV *)cv);
359		418
360	CvDEPTH (cv) = 0;	419	CvDEPTH (cv) = 0;
361	get_padlist (cv);	420	get_padlist (aTHX_ cv);
362	}	421	}
363	}	422	}
364	#ifdef CXt_FORMAT
365	else if (CxTYPE (cx) == CXt_FORMAT)
366	{
367	/* I never used formats, so how should I know how these are implemented? */
368	/* my bold guess is as a simple, plain sub... */
369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
370	}
371	#endif
372	}	423	}
373		424
374	if (top_si->si_type == PERLSI_MAIN)	425	if (top_si->si_type == PERLSI_MAIN)
375	break;	426	break;
376		427
…		…
380	}	431	}
381		432
382	PUTBACK;	433	PUTBACK;
383	}	434	}
384		435
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	436	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	437	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	438	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		439	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		440	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
388		441
389	#define VAR(name,type)c->name = PL_ ## name;	442	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	443	# include "state.h"
391	#undef VAR	444	#undef VAR
392	}	445	}
…		…
395	* allocate various perl stacks. This is an exact copy	448	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	449	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	450	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	451	* not usually need a lot of stackspace.
399	*/	452	*/
		453	#if CORO_PREFER_PERL_FUNCTIONS
		454	# define coro_init_stacks init_stacks
		455	#else
400	static void	456	static void
401	coro_init_stacks ()	457	coro_init_stacks (pTHX)
402	{	458	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	459	PL_curstackinfo = new_stackinfo(64, 6);
404	PL_curstackinfo->si_type = PERLSI_MAIN;	460	PL_curstackinfo->si_type = PERLSI_MAIN;
405	PL_curstack = PL_curstackinfo->si_stack;	461	PL_curstack = PL_curstackinfo->si_stack;
406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	462	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
407		463
408	PL_stack_base = AvARRAY(PL_curstack);	464	PL_stack_base = AvARRAY(PL_curstack);
409	PL_stack_sp = PL_stack_base;	465	PL_stack_sp = PL_stack_base;
410	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	466	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
411		467
412	New(50,PL_tmps_stack,128,SV*);	468	New(50,PL_tmps_stack,64,SV*);
413	PL_tmps_floor = -1;	469	PL_tmps_floor = -1;
414	PL_tmps_ix = -1;	470	PL_tmps_ix = -1;
415	PL_tmps_max = 128;	471	PL_tmps_max = 64;
416		472
417	New(54,PL_markstack,32,I32);	473	New(54,PL_markstack,16,I32);
418	PL_markstack_ptr = PL_markstack;	474	PL_markstack_ptr = PL_markstack;
419	PL_markstack_max = PL_markstack + 32;	475	PL_markstack_max = PL_markstack + 16;
420		476
421	#ifdef SET_MARK_OFFSET	477	#ifdef SET_MARK_OFFSET
422	SET_MARK_OFFSET;	478	SET_MARK_OFFSET;
423	#endif	479	#endif
424		480
425	New(54,PL_scopestack,32,I32);	481	New(54,PL_scopestack,16,I32);
426	PL_scopestack_ix = 0;	482	PL_scopestack_ix = 0;
427	PL_scopestack_max = 32;	483	PL_scopestack_max = 16;
428		484
429	New(54,PL_savestack,64,ANY);	485	New(54,PL_savestack,64,ANY);
430	PL_savestack_ix = 0;	486	PL_savestack_ix = 0;
431	PL_savestack_max = 64;	487	PL_savestack_max = 64;
432		488
433	#if !PERL_VERSION_ATLEAST (5,9,0)	489	#if !PERL_VERSION_ATLEAST (5,9,0)
434	New(54,PL_retstack,16,OP*);	490	New(54,PL_retstack,4,OP*);
435	PL_retstack_ix = 0;	491	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	492	PL_retstack_max = 4;
437	#endif	493	#endif
438	}	494	}
		495	#endif
439		496
440	/*	497	/*
441	* destroy the stacks, the callchain etc...	498	* destroy the stacks, the callchain etc...
442	*/	499	*/
443	static void	500	static void
444	coro_destroy_stacks ()	501	coro_destroy_stacks (pTHX)
445	{	502	{
446	if (!IN_DESTRUCT)	503	if (!IN_DESTRUCT)
447	{	504	{
448	/* is this ugly, I ask? */	505	/* restore all saved variables and stuff */
449	LEAVE_SCOPE (0);	506	LEAVE_SCOPE (0);
		507	assert (PL_tmps_floor == -1);
450		508
451	/* sure it is, but more important: is it correct?? :/ */	509	/* free all temporaries */
452	FREETMPS;	510	FREETMPS;
		511	assert (PL_tmps_ix == -1);
453		512
		513	/* unwind all extra stacks */
454	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	514	POPSTACK_TO (PL_mainstack);
		515
		516	/* unwind main stack */
		517	dounwind (-1);
455	}	518	}
456		519
457	while (PL_curstackinfo->si_next)	520	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	521	PL_curstackinfo = PL_curstackinfo->si_next;
459		522
460	while (PL_curstackinfo)	523	while (PL_curstackinfo)
461	{	524	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	525	PERL_SI *p = PL_curstackinfo->si_prev;
463		526
464	{ /*D*//*remove*/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	527	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/*D*//*remove*/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	528	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		529
476	Safefree (PL_curstackinfo->si_cxstack);	530	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	531	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	532	PL_curstackinfo = p;
479	}	533	}
…		…
485	#if !PERL_VERSION_ATLEAST (5,9,0)	539	#if !PERL_VERSION_ATLEAST (5,9,0)
486	Safefree (PL_retstack);	540	Safefree (PL_retstack);
487	#endif	541	#endif
488	}	542	}
489		543
		544	static size_t
		545	coro_rss (struct coro *coro)
		546	{
		547	size_t rss = sizeof (coro);
		548
		549	if (coro->mainstack)
		550	{
		551	if (coro->flags & CF_RUNNING)
		552	{
		553	#define VAR(name,type)coro->name = PL_ ## name;
		554	# include "state.h"
		555	#undef VAR
		556	}
		557
		558	rss += sizeof (coro->curstackinfo);
		559	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		560	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		561	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		562	rss += coro->tmps_max * sizeof (SV *);
		563	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		564	rss += coro->scopestack_max * sizeof (I32);
		565	rss += coro->savestack_max * sizeof (ANY);
		566
		567	#if !PERL_VERSION_ATLEAST (5,9,0)
		568	rss += coro->retstack_max * sizeof (OP *);
		569	#endif
		570	}
		571
		572	return rss;
		573	}
		574
		575	/** coroutine stack handling ************************************************/
		576
490	static void	577	static void
491	setup_coro (struct coro *coro)	578	setup_coro (pTHX_ struct coro *coro)
492	{	579	{
493	/*	580	/*
494	* emulate part of the perl startup here.	581	* emulate part of the perl startup here.
495	*/	582	*/
496
497	coro_init_stacks ();	583	coro_init_stacks (aTHX);
498		584
499	PL_curcop = &PL_compiling;	585	PL_curcop = &PL_compiling;
500	PL_in_eval = EVAL_NULL;	586	PL_in_eval = EVAL_NULL;
		587	PL_comppad = 0;
501	PL_curpm = 0;	588	PL_curpm = 0;
502	PL_localizing = 0;	589	PL_localizing = 0;
503	PL_dirty = 0;	590	PL_dirty = 0;
504	PL_restartop = 0;	591	PL_restartop = 0;
505		592
…		…
513	Zero (&myop, 1, LOGOP);	600	Zero (&myop, 1, LOGOP);
514	myop.op_next = Nullop;	601	myop.op_next = Nullop;
515	myop.op_flags = OPf_WANT_VOID;	602	myop.op_flags = OPf_WANT_VOID;
516		603
517	PUSHMARK (SP);	604	PUSHMARK (SP);
518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	605	XPUSHs (av_shift (GvAV (PL_defgv)));
519	PUTBACK;	606	PUTBACK;
520	PL_op = (OP *)&myop;	607	PL_op = (OP *)&myop;
521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
522	SPAGAIN;	609	SPAGAIN;
523	}	610	}
524		611
525	ENTER; /* necessary e.g. for dounwind */	612	ENTER; /* necessary e.g. for dounwind */
526	}	613	}
527		614
528	static void	615	static void
529	free_coro_mortal ()	616	free_coro_mortal (pTHX)
530	{	617	{
531	if (coro_mortal)	618	if (coro_mortal)
532	{	619	{
533	SvREFCNT_dec (coro_mortal);	620	SvREFCNT_dec (coro_mortal);
534	coro_mortal = 0;	621	coro_mortal = 0;
535	}	622	}
536	}	623	}
537		624
538	/* inject a fake call to Coro::State::_cctx_init into the execution */	625	/* inject a fake call to Coro::State::_cctx_init into the execution */
		626	/* _cctx_init should be careful, as it could be called at almost any time */
		627	/* during execution of a perl program */
539	static void NOINLINE	628	static void NOINLINE
540	prepare_cctx (coro_cctx *cctx)	629	prepare_cctx (pTHX_ coro_cctx *cctx)
541	{	630	{
542	dSP;	631	dSP;
543	LOGOP myop;	632	LOGOP myop;
544		633
545	Zero (&myop, 1, LOGOP);	634	Zero (&myop, 1, LOGOP);
…		…
554	PL_op = (OP *)&myop;	643	PL_op = (OP *)&myop;
555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	644	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
556	SPAGAIN;	645	SPAGAIN;
557	}	646	}
558		647
		648	/*
		649	* this is a _very_ stripped down perl interpreter ;)
		650	*/
559	static void	651	static void
560	coro_run (void *arg)	652	coro_run (void *arg)
561	{	653	{
		654	dTHX;
		655
562	/* coro_run is the alternative tail of transfer(), so unlock here. */	656	/* coro_run is the alternative tail of transfer(), so unlock here. */
563	UNLOCK;	657	UNLOCK;
564		658
565	/*
566	* this is a _very_ stripped down perl interpreter ;)
567	*/
568	PL_top_env = &PL_start_env;	659	PL_top_env = &PL_start_env;
569		660
570	/* inject call to cctx_init */	661	/* inject a fake subroutine call to cctx_init */
571	prepare_cctx ((coro_cctx *)arg);	662	prepare_cctx (aTHX_ (coro_cctx *)arg);
572		663
573	/* somebody will hit me for both perl_run and PL_restartop */	664	/* somebody or something will hit me for both perl_run and PL_restartop */
574	PL_restartop = PL_op;	665	PL_restartop = PL_op;
575	perl_run (PL_curinterp);	666	perl_run (PL_curinterp);
576		667
577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	668	/*
578	abort ();	669	* If perl-run returns we assume exit() was being called or the coro
		670	* fell off the end, which seems to be the only valid (non-bug)
		671	* reason for perl_run to return. We try to exit by jumping to the
		672	* bootstrap-time "top" top_env, as we cannot restore the "main"
		673	* coroutine as Coro has no such concept
		674	*/
		675	PL_top_env = main_top_env;
		676	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
579	}	677	}
580		678
581	static coro_cctx *	679	static coro_cctx *
582	cctx_new ()	680	cctx_new ()
583	{	681	{
584	coro_cctx *cctx;	682	coro_cctx *cctx;
		683	void *stack_start;
		684	size_t stack_size;
585		685
586	++cctx_count;	686	++cctx_count;
587		687
588	New (0, cctx, 1, coro_cctx);	688	Newz (0, cctx, 1, coro_cctx);
589		689
590	#if HAVE_MMAP	690	#if HAVE_MMAP
591		691
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	692	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	693	/* mmap supposedly does allocate-on-write for us */
594	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	694	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
595		695
596	if (cctx->sptr == (void *)-1)	696	if (cctx->sptr != (void *)-1)
597	{
598	perror ("FATAL: unable to mmap stack for coroutine");
599	_exit (EXIT_FAILURE);
600	}	697	{
601
602	# if STACKGUARD	698	# if CORO_STACKGUARD
603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	699	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
604	# endif	700	# endif
		701	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		702	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		703	cctx->mapped = 1;
		704	}
		705	else
		706	#endif
		707	{
		708	cctx->ssize = coro_stacksize * (long)sizeof (long);
		709	New (0, cctx->sptr, coro_stacksize, long);
605		710
606	#else
607
608	cctx->ssize = STACKSIZE * (long)sizeof (long);
609	New (0, cctx->sptr, STACKSIZE, long);
610
611	if (!cctx->sptr)	711	if (!cctx->sptr)
612	{	712	{
613	perror ("FATAL: unable to malloc stack for coroutine");	713	perror ("FATAL: unable to allocate stack for coroutine");
614	_exit (EXIT_FAILURE);	714	_exit (EXIT_FAILURE);
615	}	715	}
616		716
617	#endif	717	stack_start = cctx->sptr;
		718	stack_size = cctx->ssize;
		719	}
618		720
619	#if USE_VALGRIND	721	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
622	cctx->ssize + (char *)cctx->sptr
623	);
624	#endif
625
626	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	722	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
627		723
628	return cctx;	724	return cctx;
629	}	725	}
630		726
631	static void	727	static void
…		…
634	if (!cctx)	730	if (!cctx)
635	return;	731	return;
636		732
637	--cctx_count;	733	--cctx_count;
638		734
639	#if USE_VALGRIND	735	#if CORO_USE_VALGRIND
640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	736	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641	#endif	737	#endif
642		738
643	#if HAVE_MMAP	739	#if HAVE_MMAP
		740	if (cctx->mapped)
644	munmap (cctx->sptr, cctx->ssize);	741	munmap (cctx->sptr, cctx->ssize);
645	#else	742	else
		743	#endif
646	Safefree (cctx->sptr);	744	Safefree (cctx->sptr);
647	#endif
648		745
649	Safefree (cctx);	746	Safefree (cctx);
650	}	747	}
651		748
652	static coro_cctx *	749	static coro_cctx *
653	cctx_get ()	750	cctx_get (pTHX)
654	{	751	{
655	coro_cctx *cctx;
656
657	if (cctx_first)	752	while (cctx_first)
658	{	753	{
659	cctx = cctx_first;	754	coro_cctx *cctx = cctx_first;
660	cctx_first = cctx->next;	755	cctx_first = cctx->next;
661	--cctx_idle;	756	--cctx_idle;
		757
		758	if (cctx->ssize >= coro_stacksize)
		759	return cctx;
		760
		761	cctx_destroy (cctx);
662	}	762	}
663	else	763
664	{
665	cctx = cctx_new ();
666	PL_op = PL_op->op_next;	764	PL_op = PL_op->op_next;
667	}
668
669	return cctx;	765	return cctx_new ();
670	}	766	}
671		767
672	static void	768	static void
673	cctx_put (coro_cctx *cctx)	769	cctx_put (coro_cctx *cctx)
674	{	770	{
…		…
686	++cctx_idle;	782	++cctx_idle;
687	cctx->next = cctx_first;	783	cctx->next = cctx_first;
688	cctx_first = cctx;	784	cctx_first = cctx;
689	}	785	}
690		786
		787	/** coroutine switching *****************************************************/
		788
691	/* never call directly, always through the coro_state_transfer global variable */	789	/* never call directly, always through the coro_state_transfer global variable */
692	static void NOINLINE	790	static void NOINLINE
693	transfer (struct coro *prev, struct coro *next, int flags)	791	transfer (pTHX_ struct coro *prev, struct coro *next)
694	{	792	{
695	dSTACKLEVEL;	793	dSTACKLEVEL;
696		794
697	/* sometimes transfer is only called to set idle_sp */	795	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	796	if (!next)
		797	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	798	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		799	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
		800	}
700	else if (prev != next)	801	else if (prev != next)
701	{	802	{
702	coro_cctx *prev__cctx;	803	coro_cctx *prev__cctx;
703		804
704	if (prev->flags & CF_NEW)	805	if (prev->flags & CF_NEW)
…		…
715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	816	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
716		817
717	if (next->flags & CF_RUNNING)	818	if (next->flags & CF_RUNNING)
718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	819	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
719		820
		821	if (next->flags & CF_DESTROYED)
		822	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		823
720	prev->flags &= ~CF_RUNNING;	824	prev->flags &= ~CF_RUNNING;
721	next->flags |= CF_RUNNING;	825	next->flags |= CF_RUNNING;
722		826
723	LOCK;	827	LOCK;
724		828
725	if (next->flags & CF_NEW)	829	if (next->flags & CF_NEW)
726	{	830	{
727	/* need to start coroutine */	831	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	832	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	833	/* first get rid of the old state */
730	SAVE (prev, -1);	834	save_perl (aTHX_ prev);
731	/* setup coroutine call */	835	/* setup coroutine call */
732	setup_coro (next);	836	setup_coro (aTHX_ next);
733	/* need a new stack */	837	/* need a new stack */
734	assert (!next->stack);	838	assert (!next->cctx);
735	}	839	}
736	else	840	else
737	{	841	{
738	/* coroutine already started */	842	/* coroutine already started */
739	SAVE (prev, flags);	843	save_perl (aTHX_ prev);
740	LOAD (next);	844	load_perl (aTHX_ next);
741	}	845	}
742		846
743	prev__cctx = prev->cctx;	847	prev__cctx = prev->cctx;
744		848
745	/* possibly "free" the cctx */	849	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	850	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	851	{
748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	852	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
749	assert (PL_top_env == prev__cctx->top_env);	853	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
750		854
751	prev->cctx = 0;	855	prev->cctx = 0;
752		856
753	cctx_put (prev__cctx);	857	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;	858	prev__cctx->inuse = 0;
755	}	859	}
756		860
757	if (!next->cctx)	861	if (!next->cctx)
758	{	862	{
759	next->cctx = cctx_get ();	863	next->cctx = cctx_get (aTHX);
760	assert (!next->cctx->inuse);	864	assert (!next->cctx->inuse);
761	next->cctx->inuse = 1;	865	next->cctx->inuse = 1;
762	}	866	}
763		867
764	if (prev__cctx != next->cctx)	868	if (prev__cctx != next->cctx)
…		…
766	prev__cctx->top_env = PL_top_env;	870	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->cctx->top_env;	871	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	872	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	873	}
770		874
771	free_coro_mortal ();	875	free_coro_mortal (aTHX);
772
773	UNLOCK;	876	UNLOCK;
774	}	877	}
775	}	878	}
776		879
777	struct transfer_args	880	struct transfer_args
778	{	881	{
779	struct coro *prev, *next;	882	struct coro *prev, *next;
780	int flags;
781	};	883	};
782		884
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	885	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
784		886
		887	/** high level stuff ********************************************************/
		888
785	static void	889	static int
786	coro_state_destroy (struct coro *coro)	890	coro_state_destroy (pTHX_ struct coro *coro)
787	{	891	{
788	if (coro->refcnt--)	892	if (coro->flags & CF_DESTROYED)
789	return;	893	return 0;
		894
		895	coro->flags |= CF_DESTROYED;
		896
		897	if (coro->flags & CF_READY)
		898	{
		899	/* reduce nready, as destroying a ready coro effectively unreadies it */
		900	/* alternative: look through all ready queues and remove the coro */
		901	LOCK;
		902	--coro_nready;
		903	UNLOCK;
		904	}
		905	else
		906	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
790		907
791	if (coro->mainstack && coro->mainstack != main_mainstack)	908	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	909	{
793	struct coro temp;	910	struct coro temp;
		911
		912	assert (!(coro->flags & CF_RUNNING));
		913
		914	Zero (&temp, 1, struct coro);
		915	temp.save = CORO_SAVE_ALL;
794		916
795	if (coro->flags & CF_RUNNING)	917	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	918	croak ("FATAL: tried to destroy currently running coroutine");
797		919
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	920	save_perl (aTHX_ &temp);
799	LOAD (coro);	921	load_perl (aTHX_ coro);
800		922
801	coro_destroy_stacks ();	923	coro_destroy_stacks (aTHX);
802		924
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	925	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		926
805	coro->mainstack = 0;	927	coro->mainstack = 0;
806	}	928	}
807		929
808	cctx_destroy (coro->cctx);	930	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	931	SvREFCNT_dec (coro->args);
810	Safefree (coro);	932
		933	if (coro->next) coro->next->prev = coro->prev;
		934	if (coro->prev) coro->prev->next = coro->next;
		935	if (coro == coro_first) coro_first = coro->next;
		936
		937	return 1;
811	}	938	}
812		939
813	static int	940	static int
814	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	941	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
815	{	942	{
816	struct coro *coro = (struct coro *)mg->mg_ptr;	943	struct coro *coro = (struct coro *)mg->mg_ptr;
817	mg->mg_ptr = 0;	944	mg->mg_ptr = 0;
818		945
		946	coro->hv = 0;
		947
		948	if (--coro->refcnt < 0)
		949	{
819	coro_state_destroy (coro);	950	coro_state_destroy (aTHX_ coro);
		951	Safefree (coro);
		952	}
820		953
821	return 0;	954	return 0;
822	}	955	}
823		956
824	static int	957	static int
…		…
831	return 0;	964	return 0;
832	}	965	}
833		966
834	static MGVTBL coro_state_vtbl = {	967	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	968	0, 0, 0, 0,
836	coro_state_clear,	969	coro_state_free,
837	0,	970	0,
838	#ifdef MGf_DUP	971	#ifdef MGf_DUP
839	coro_state_dup,	972	coro_state_dup,
840	#else	973	#else
841	# define MGf_DUP 0	974	# define MGf_DUP 0
842	#endif	975	#endif
843	};	976	};
844		977
845	static struct coro *	978	static struct coro *
846	SvSTATE (SV *coro)	979	SvSTATE_ (pTHX_ SV *coro)
847	{	980	{
848	HV *stash;	981	HV *stash;
849	MAGIC *mg;	982	MAGIC *mg;
850		983
851	if (SvROK (coro))	984	if (SvROK (coro))
…		…
857	/* very slow, but rare, check */	990	/* very slow, but rare, check */
858	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	991	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859	croak ("Coro::State object required");	992	croak ("Coro::State object required");
860	}	993	}
861		994
862	mg = SvMAGIC (coro);	995	mg = CORO_MAGIC (coro);
863	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	996	return (struct coro *)mg->mg_ptr;
865	}	997	}
866		998
		999	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1000
867	static void	1001	static void
868	prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags)	1002	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
869	{	1003	{
870	ta->prev = SvSTATE (prev);	1004	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	1005	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;
873	}	1006	}
874		1007
875	static void	1008	static void
876	api_transfer (SV *prev, SV *next, int flags)	1009	api_transfer (SV *prev_sv, SV *next_sv)
877	{	1010	{
		1011	dTHX;
878	struct transfer_args ta;	1012	struct transfer_args ta;
879		1013
880	prepare_transfer (&ta, prev, next, flags);	1014	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
881	TRANSFER (ta);	1015	TRANSFER (ta);
882	}	1016	}
883		1017
		1018	static int
		1019	api_save (SV *coro_sv, int new_save)
		1020	{
		1021	dTHX;
		1022	struct coro *coro = SvSTATE (coro_sv);
		1023	int old_save = coro->save;
		1024
		1025	if (new_save >= 0)
		1026	coro->save = new_save;
		1027
		1028	return old_save;
		1029	}
		1030
884	/** Coro ********************************************************************/	1031	/** Coro ********************************************************************/
885		1032
886	#define PRIO_MAX 3
887	#define PRIO_HIGH 1
888	#define PRIO_NORMAL 0
889	#define PRIO_LOW -1
890	#define PRIO_IDLE -3
891	#define PRIO_MIN -4
892
893	/* for Coro.pm */
894	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;
897
898	static void	1033	static void
899	coro_enq (SV *coro_sv)	1034	coro_enq (pTHX_ SV *coro_sv)
900	{	1035	{
901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1036	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
902	coro_nready++;
903	}	1037	}
904		1038
905	static SV *	1039	static SV *
906	coro_deq (int min_prio)	1040	coro_deq (pTHX_ int min_prio)
907	{	1041	{
908	int prio = PRIO_MAX - PRIO_MIN;	1042	int prio = PRIO_MAX - PRIO_MIN;
909		1043
910	min_prio -= PRIO_MIN;	1044	min_prio -= PRIO_MIN;
911	if (min_prio < 0)	1045	if (min_prio < 0)
912	min_prio = 0;	1046	min_prio = 0;
913		1047
914	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1048	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
915	if (AvFILLp (coro_ready [prio]) >= 0)	1049	if (AvFILLp (coro_ready [prio]) >= 0)
916	{
917	coro_nready--;
918	return av_shift (coro_ready [prio]);	1050	return av_shift (coro_ready [prio]);
919	}
920		1051
921	return 0;	1052	return 0;
922	}	1053	}
923		1054
924	static int	1055	static int
925	api_ready (SV *coro_sv)	1056	api_ready (SV *coro_sv)
926	{	1057	{
		1058	dTHX;
927	struct coro *coro;	1059	struct coro *coro;
928		1060
929	if (SvROK (coro_sv))	1061	if (SvROK (coro_sv))
930	coro_sv = SvRV (coro_sv);	1062	coro_sv = SvRV (coro_sv);
931		1063
932	coro = SvSTATE (coro_sv);	1064	coro = SvSTATE (coro_sv);
933		1065
934	if (coro->flags & CF_READY)	1066	if (coro->flags & CF_READY)
935	return 0;	1067	return 0;
936		1068
937	#if 0 /* this is actually harmless */
938	if (coro->flags & CF_RUNNING)
939	croak ("Coro::ready called on currently running coroutine");
940	#endif
941
942	coro->flags |= CF_READY;	1069	coro->flags |= CF_READY;
943		1070
944	LOCK;	1071	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	1072	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1073	++coro_nready;
946	UNLOCK;	1074	UNLOCK;
947		1075
948	return 1;	1076	return 1;
949	}	1077	}
950		1078
951	static int	1079	static int
952	api_is_ready (SV *coro_sv)	1080	api_is_ready (SV *coro_sv)
953	{	1081	{
		1082	dTHX;
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	1083	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	1084	}
956		1085
957	static void	1086	static void
958	prepare_schedule (struct transfer_args *ta)	1087	prepare_schedule (pTHX_ struct transfer_args *ta)
959	{	1088	{
960	SV *prev, *next;	1089	SV *prev_sv, *next_sv;
961		1090
962	for (;;)	1091	for (;;)
963	{	1092	{
964	LOCK;	1093	LOCK;
965	next = coro_deq (PRIO_MIN);	1094	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1095
		1096	/* nothing to schedule: call the idle handler */
		1097	if (!next_sv)
		1098	{
		1099	dSP;
		1100	UNLOCK;
		1101
		1102	ENTER;
		1103	SAVETMPS;
		1104
		1105	PUSHMARK (SP);
		1106	PUTBACK;
		1107	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1108
		1109	FREETMPS;
		1110	LEAVE;
		1111	continue;
		1112	}
		1113
		1114	ta->next = SvSTATE (next_sv);
		1115
		1116	/* cannot transfer to destroyed coros, skip and look for next */
		1117	if (ta->next->flags & CF_DESTROYED)
		1118	{
		1119	UNLOCK;
		1120	SvREFCNT_dec (next_sv);
		1121	/* coro_nready is already taken care of by destroy */
		1122	continue;
		1123	}
		1124
		1125	--coro_nready;
966	UNLOCK;	1126	UNLOCK;
967
968	if (next)
969	break;	1127	break;
970
971	{
972	dSP;
973
974	ENTER;
975	SAVETMPS;
976
977	PUSHMARK (SP);
978	PUTBACK;
979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
980
981	FREETMPS;
982	LEAVE;
983	}	1128	}
984	}
985
986	prev = SvRV (coro_current);
987	SvRV_set (coro_current, next);
988		1129
989	/* free this only after the transfer */	1130	/* free this only after the transfer */
		1131	prev_sv = SvRV (coro_current);
		1132	SvRV_set (coro_current, next_sv);
		1133	ta->prev = SvSTATE (prev_sv);
		1134
		1135	assert (ta->next->flags & CF_READY);
		1136	ta->next->flags &= ~CF_READY;
		1137
990	LOCK;	1138	LOCK;
991	free_coro_mortal ();	1139	free_coro_mortal (aTHX);
		1140	coro_mortal = prev_sv;
992	UNLOCK;	1141	UNLOCK;
993	coro_mortal = prev;
994
995	assert (!SvROK(prev));//D
996	assert (!SvROK(next));//D
997
998	ta->prev = SvSTATE (prev);
999	ta->next = SvSTATE (next);
1000	ta->flags = TRANSFER_SAVE_ALL;
1001
1002	assert (ta->flags & CF_READY);
1003	ta->next->flags &= ~CF_READY;
1004	}	1142	}
1005		1143
1006	static void	1144	static void
1007	prepare_cede (struct transfer_args *ta)	1145	prepare_cede (pTHX_ struct transfer_args *ta)
1008	{	1146	{
1009	api_ready (coro_current);	1147	api_ready (coro_current);
1010
1011	prepare_schedule (ta);	1148	prepare_schedule (aTHX_ ta);
		1149	}
		1150
		1151	static int
		1152	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1153	{
		1154	if (coro_nready)
		1155	{
		1156	SV *prev = SvRV (coro_current);
		1157	prepare_schedule (aTHX_ ta);
		1158	api_ready (prev);
		1159	return 1;
		1160	}
		1161	else
		1162	return 0;
1012	}	1163	}
1013		1164
1014	static void	1165	static void
1015	api_schedule (void)	1166	api_schedule (void)
1016	{	1167	{
		1168	dTHX;
1017	struct transfer_args ta;	1169	struct transfer_args ta;
1018		1170
1019	prepare_schedule (&ta);	1171	prepare_schedule (aTHX_ &ta);
1020	TRANSFER (ta);	1172	TRANSFER (ta);
1021	}	1173	}
1022		1174
1023	static void	1175	static int
1024	api_cede (void)	1176	api_cede (void)
1025	{	1177	{
		1178	dTHX;
1026	struct transfer_args ta;	1179	struct transfer_args ta;
1027		1180
1028	prepare_cede (&ta);	1181	prepare_cede (aTHX_ &ta);
		1182
		1183	if (ta.prev != ta.next)
		1184	{
1029	TRANSFER (ta);	1185	TRANSFER (ta);
		1186	return 1;
		1187	}
		1188	else
		1189	return 0;
		1190	}
		1191
		1192	static int
		1193	api_cede_notself (void)
		1194	{
		1195	dTHX;
		1196	struct transfer_args ta;
		1197
		1198	if (prepare_cede_notself (aTHX_ &ta))
		1199	{
		1200	TRANSFER (ta);
		1201	return 1;
		1202	}
		1203	else
		1204	return 0;
1030	}	1205	}
1031		1206
1032	MODULE = Coro::State PACKAGE = Coro::State	1207	MODULE = Coro::State PACKAGE = Coro::State
1033		1208
1034	PROTOTYPES: DISABLE	1209	PROTOTYPES: DISABLE
…		…
1040	#endif	1215	#endif
1041	BOOT_PAGESIZE;	1216	BOOT_PAGESIZE;
1042		1217
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1218	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1219
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1221	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1222	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1223	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1224	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1225	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1226	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1048		1227
1049	main_mainstack = PL_mainstack;	1228	main_mainstack = PL_mainstack;
		1229	main_top_env = PL_top_env;
		1230
		1231	while (main_top_env->je_prev)
		1232	main_top_env = main_top_env->je_prev;
1050		1233
1051	coroapi.ver = CORO_API_VERSION;	1234	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1235	coroapi.transfer = api_transfer;
1053		1236
1054	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1237	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1062	HV *hv;	1245	HV *hv;
1063	int i;	1246	int i;
1064		1247
1065	Newz (0, coro, 1, struct coro);	1248	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1249	coro->args = newAV ();
		1250	coro->save = CORO_SAVE_DEF;
1067	coro->flags = CF_NEW;	1251	coro->flags = CF_NEW;
1068		1252
		1253	if (coro_first) coro_first->prev = coro;
		1254	coro->next = coro_first;
		1255	coro_first = coro;
		1256
1069	hv = newHV ();	1257	coro->hv = hv = newHV ();
1070	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1258	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1259	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1260
1073	for (i = 1; i < items; i++)	1261	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1262	av_push (coro->args, newSVsv (ST (i)));
1075	}	1263	}
1076	OUTPUT:	1264	OUTPUT:
		1265	RETVAL
		1266
		1267	int
		1268	save (SV *coro, int new_save = -1)
		1269	CODE:
		1270	RETVAL = api_save (coro, new_save);
		1271	OUTPUT:
		1272	RETVAL
		1273
		1274	int
		1275	save_also (SV *coro_sv, int save_also)
		1276	CODE:
		1277	{
		1278	struct coro *coro = SvSTATE (coro_sv);
		1279	RETVAL = coro->save;
		1280	coro->save |= save_also;
		1281	}
		1282	OUTPUT:
1077	RETVAL	1283	RETVAL
1078		1284
1079	void	1285	void
1080	_set_stacklevel (...)	1286	_set_stacklevel (...)
1081	ALIAS:	1287	ALIAS:
1082	Coro::State::transfer = 1	1288	Coro::State::transfer = 1
1083	Coro::schedule = 2	1289	Coro::schedule = 2
1084	Coro::cede = 3	1290	Coro::cede = 3
		1291	Coro::cede_notself = 4
1085	CODE:	1292	CODE:
1086	{	1293	{
1087	struct transfer_args ta;	1294	struct transfer_args ta;
1088		1295
1089	switch (ix)	1296	switch (ix)
1090	{	1297	{
1091	case 0:	1298	case 0:
1092	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1299	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1093	ta.next = 0;	1300	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1301	break;
1096		1302
1097	case 1:	1303	case 1:
1098	if (items != 3)	1304	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1305	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1306
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1307	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1102	break;	1308	break;
1103		1309
1104	case 2:	1310	case 2:
1105	prepare_schedule (&ta);	1311	prepare_schedule (aTHX_ &ta);
1106	break;	1312	break;
1107		1313
1108	case 3:	1314	case 3:
1109	prepare_cede (&ta);	1315	prepare_cede (aTHX_ &ta);
		1316	break;
		1317
		1318	case 4:
		1319	if (!prepare_cede_notself (aTHX_ &ta))
		1320	XSRETURN_EMPTY;
		1321
1110	break;	1322	break;
1111	}	1323	}
1112		1324
		1325	BARRIER;
1113	TRANSFER (ta);	1326	TRANSFER (ta);
1114	}
1115		1327
1116	void	1328	if (GIMME_V != G_VOID && ta.next != ta.prev)
1117	_clone_state_from (SV *dst, SV *src)	1329	XSRETURN_YES;
		1330	}
		1331
		1332	bool
		1333	_destroy (SV *coro_sv)
1118	CODE:	1334	CODE:
1119	{	1335	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1120	struct coro *coro_src = SvSTATE (src);	1336	OUTPUT:
1121		1337	RETVAL
1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1123
1124	++coro_src->refcnt;
1125	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1126	}
1127		1338
1128	void	1339	void
1129	_exit (code)	1340	_exit (code)
1130	int code	1341	int code
1131	PROTOTYPE: $	1342	PROTOTYPE: $
1132	CODE:	1343	CODE:
1133	_exit (code);	1344	_exit (code);
1134		1345
1135	int	1346	int
		1347	cctx_stacksize (int new_stacksize = 0)
		1348	CODE:
		1349	RETVAL = coro_stacksize;
		1350	if (new_stacksize)
		1351	coro_stacksize = new_stacksize;
		1352	OUTPUT:
		1353	RETVAL
		1354
		1355	int
1136	cctx_count ()	1356	cctx_count ()
1137	CODE:	1357	CODE:
1138	RETVAL = cctx_count;	1358	RETVAL = cctx_count;
1139	OUTPUT:	1359	OUTPUT:
1140	RETVAL	1360	RETVAL
…		…
1144	CODE:	1364	CODE:
1145	RETVAL = cctx_idle;	1365	RETVAL = cctx_idle;
1146	OUTPUT:	1366	OUTPUT:
1147	RETVAL	1367	RETVAL
1148		1368
		1369	void
		1370	list ()
		1371	PPCODE:
		1372	{
		1373	struct coro *coro;
		1374	for (coro = coro_first; coro; coro = coro->next)
		1375	if (coro->hv)
		1376	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1377	}
		1378
		1379	void
		1380	_eval (Coro::State coro, SV *coderef)
		1381	CODE:
		1382	{
		1383	if (coro->mainstack)
		1384	{
		1385	struct coro temp;
		1386	Zero (&temp, 1, struct coro);
		1387	temp.save = CORO_SAVE_ALL;
		1388
		1389	if (!(coro->flags & CF_RUNNING))
		1390	{
		1391	save_perl (aTHX_ &temp);
		1392	load_perl (aTHX_ coro);
		1393	}
		1394
		1395	{
		1396	dSP;
		1397	ENTER;
		1398	SAVETMPS;
		1399	PUSHMARK (SP);
		1400	PUTBACK;
		1401	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1402	SPAGAIN;
		1403	FREETMPS;
		1404	LEAVE;
		1405	PUTBACK;
		1406	}
		1407
		1408	if (!(coro->flags & CF_RUNNING))
		1409	{
		1410	save_perl (aTHX_ coro);
		1411	load_perl (aTHX_ &temp);
		1412	}
		1413	}
		1414	}
		1415
		1416	SV *
		1417	is_ready (Coro::State coro)
		1418	PROTOTYPE: $
		1419	ALIAS:
		1420	is_ready = CF_READY
		1421	is_running = CF_RUNNING
		1422	is_new = CF_NEW
		1423	is_destroyed = CF_DESTROYED
		1424	CODE:
		1425	RETVAL = boolSV (coro->flags & ix);
		1426	OUTPUT:
		1427	RETVAL
		1428
		1429	IV
		1430	rss (Coro::State coro)
		1431	PROTOTYPE: $
		1432	CODE:
		1433	RETVAL = coro_rss (coro);
		1434	OUTPUT:
		1435	RETVAL
		1436
		1437
1149	MODULE = Coro::State PACKAGE = Coro	1438	MODULE = Coro::State PACKAGE = Coro
1150		1439
1151	BOOT:	1440	BOOT:
1152	{	1441	{
1153	int i;	1442	int i;
…		…
1168	coro_ready[i] = newAV ();	1457	coro_ready[i] = newAV ();
1169		1458
1170	{	1459	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1460	SV *sv = perl_get_sv("Coro::API", 1);
1172		1461
1173	coroapi.schedule = api_schedule;	1462	coroapi.schedule = api_schedule;
		1463	coroapi.save = api_save;
1174	coroapi.cede = api_cede;	1464	coroapi.cede = api_cede;
		1465	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1466	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1467	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1468	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1469	coroapi.current = coro_current;
1179		1470
1180	GCoroAPI = &coroapi;	1471	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1472	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1473	SvREADONLY_on (sv);
1183	}	1474	}
1184	}	1475	}
		1476
		1477	void
		1478	_set_current (SV *current)
		1479	PROTOTYPE: $
		1480	CODE:
		1481	SvREFCNT_dec (SvRV (coro_current));
		1482	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1483
1186	int	1484	int
1187	prio (Coro::State coro, int newprio = 0)	1485	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1486	ALIAS:
1189	nice = 1	1487	nice = 1
…		…
1192	RETVAL = coro->prio;	1490	RETVAL = coro->prio;
1193		1491
1194	if (items > 1)	1492	if (items > 1)
1195	{	1493	{
1196	if (ix)	1494	if (ix)
1197	newprio += coro->prio;	1495	newprio = coro->prio - newprio;
1198		1496
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1497	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1498	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1499
1202	coro->prio = newprio;	1500	coro->prio = newprio;
1203	}	1501	}
1204	}	1502	}
		1503	OUTPUT:
		1504	RETVAL
1205		1505
1206	SV *	1506	SV *
1207	ready (SV *self)	1507	ready (SV *self)
1208	PROTOTYPE: $	1508	PROTOTYPE: $
1209	CODE:	1509	CODE:
1210	RETVAL = boolSV (api_ready (self));	1510	RETVAL = boolSV (api_ready (self));
1211	OUTPUT:	1511	OUTPUT:
1212	RETVAL	1512	RETVAL
1213		1513
1214	SV *
1215	is_ready (SV *self)
1216	PROTOTYPE: $
1217	CODE:
1218	RETVAL = boolSV (api_is_ready (self));
1219	OUTPUT:
1220	RETVAL
1221
1222	int	1514	int
1223	nready (...)	1515	nready (...)
1224	PROTOTYPE:	1516	PROTOTYPE:
1225	CODE:	1517	CODE:
1226	RETVAL = coro_nready;	1518	RETVAL = coro_nready;
1227	OUTPUT:	1519	OUTPUT:
1228	RETVAL	1520	RETVAL
1229		1521
1230	void
1231	_set_current (SV *current)
1232	PROTOTYPE: $
1233	CODE:
1234	SvREFCNT_dec (SvRV (coro_current));
1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1236
1237	MODULE = Coro::State PACKAGE = Coro::AIO	1522	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1523
1239	SV *	1524	SV *
1240	_get_state ()	1525	_get_state ()
1241	CODE:	1526	CODE:
1242	{	1527	{
		1528	struct io_state *data;
		1529
1243	RETVAL = newSV (sizeof (struct io_state));	1530	RETVAL = newSV (sizeof (struct io_state));
1244	struct io_state *data = (struct io_state *)SvPVX (RETVAL);	1531	data = (struct io_state *)SvPVX (RETVAL);
1245	SvCUR_set (RETVAL, sizeof (struct io_state));	1532	SvCUR_set (RETVAL, sizeof (struct io_state));
1246	SvPOK_only (RETVAL);	1533	SvPOK_only (RETVAL);
1247		1534
1248	data->errorno = errno;	1535	data->errorno = errno;
1249	data->laststype = PL_laststype;	1536	data->laststype = PL_laststype;

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines