[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.162 by root, Sun Sep 23 21:49:58 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#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	}
214		283
215	#define PERL_MAGIC_coro PERL_MAGIC_ext	284	#define PERL_MAGIC_coro PERL_MAGIC_ext
216		285
217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	286	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
218		287
		288	#define CORO_MAGIC(cv) \
		289	SvMAGIC (cv) \
		290	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		291	? SvMAGIC (cv) \
		292	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		293	: 0
		294
219	/* the next two functions merely cache the padlists */	295	/* the next two functions merely cache the padlists */
220	static void	296	static void
221	get_padlist (CV *cv)	297	get_padlist (pTHX_ CV *cv)
222	{	298	{
223	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	299	MAGIC *mg = CORO_MAGIC (cv);
		300	AV *av;
224		301
225	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	302	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
226	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	303	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
227	else	304	else
228	{	305	{
229	#if 0	306	#if CORO_PREFER_PERL_FUNCTIONS
230	/* this is probably cleaner, but also slower? */	307	/* this is probably cleaner, but also slower? */
231	CV *cp = Perl_cv_clone (cv);	308	CV *cp = Perl_cv_clone (cv);
232	CvPADLIST (cv) = CvPADLIST (cp);	309	CvPADLIST (cv) = CvPADLIST (cp);
233	CvPADLIST (cp) = 0;	310	CvPADLIST (cp) = 0;
234	SvREFCNT_dec (cp);	311	SvREFCNT_dec (cp);
235	#else	312	#else
236	CvPADLIST (cv) = coro_clone_padlist (cv);	313	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
237	#endif	314	#endif
238	}	315	}
239	}	316	}
240		317
241	static void	318	static void
242	put_padlist (CV *cv)	319	put_padlist (pTHX_ CV *cv)
243	{	320	{
244	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	321	MAGIC *mg = CORO_MAGIC (cv);
		322	AV *av;
245		323
246	if (!mg)	324	if (!mg)
247	{	325	{
248	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	326	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
249	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	327	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
250	mg->mg_virtual = &vtbl_coro;	328	mg->mg_virtual = &vtbl_coro;
251	mg->mg_obj = (SV *)newAV ();	329	mg->mg_obj = (SV *)newAV ();
252	}	330	}
253		331
254	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	332	av = (AV *)mg->mg_obj;
		333
		334	if (AvFILLp (av) >= AvMAX (av))
		335	av_extend (av, AvMAX (av) + 1);
		336
		337	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
255	}	338	}
		339
		340	/ load & save, init *****************************************************/
256		341
257	#define SB do {	342	#define SB do {
258	#define SE } while (0)	343	#define SE } while (0)
259		344
260	#define LOAD(state) load_state((state));
261	#define SAVE(state,flags) save_state((state),(flags));
262
263	#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
264		346
265	static void	347	static void
266	load_state(Coro__State c)	348	load_perl (pTHX_ Coro__State c)
267	{	349	{
268	#define VAR(name,type) PL_ ## name = c->name;	350	#define VAR(name,type) PL_ ## name = c->name;
269	# include "state.h"	351	# include "state.h"
270	#undef VAR	352	#undef VAR
271		353
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	354	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	355	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
274	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	}
275		373
276	{	374	{
277	dSP;	375	dSP;
278	CV *cv;	376	CV *cv;
279		377
280	/* now do the ugly restore mess */	378	/* now do the ugly restore mess */
281	while ((cv = (CV *)POPs))	379	while ((cv = (CV *)POPs))
282	{	380	{
283	AV padlist = (AV )POPs;
284
285	if (padlist)
286	{
287	put_padlist (cv); /* mark this padlist as available */	381	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	382	CvDEPTH (cv) = PTR2IV (POPs);
289	}	383	CvPADLIST (cv) = (AV *)POPs;
290
291	++CvDEPTH(cv);
292	}	384	}
293		385
294	PUTBACK;	386	PUTBACK;
295	}	387	}
296	}	388	}
297		389
298	static void	390	static void
299	save_state(Coro__State c, int flags)	391	save_perl (pTHX_ Coro__State c)
300	{	392	{
301	{	393	{
302	dSP;	394	dSP;
303	I32 cxix = cxstack_ix;	395	I32 cxix = cxstack_ix;
304	PERL_CONTEXT *ccstk = cxstack;	396	PERL_CONTEXT *ccstk = cxstack;
…		…
307	/*	399	/*
308	* 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
309	* (and reinitialize) all cv's in the whole callchain :(	401	* (and reinitialize) all cv's in the whole callchain :(
310	*/	402	*/
311		403
312	PUSHs (Nullsv);	404	XPUSHs (Nullsv);
313	/* this loop was inspired by pp_caller */	405	/* this loop was inspired by pp_caller */
314	for (;;)	406	for (;;)
315	{	407	{
316	while (cxix >= 0)	408	while (cxix >= 0)
317	{	409	{
318	PERL_CONTEXT *cx = &ccstk[cxix--];	410	PERL_CONTEXT *cx = &ccstk[cxix--];
319		411
320	if (CxTYPE(cx) == CXt_SUB)	412	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
321	{	413	{
322	CV *cv = cx->blk_sub.cv;	414	CV *cv = cx->blk_sub.cv;
		415
323	if (CvDEPTH(cv))	416	if (CvDEPTH (cv))
324	{	417	{
325	EXTEND (SP, CvDEPTH(cv)*2);	418	EXTEND (SP, 3);
326
327	while (--CvDEPTH(cv))
328	{
329	/* this tells the restore code to increment CvDEPTH */
330	PUSHs (Nullsv);
331	PUSHs ((SV *)cv);
332	}
333
334	PUSHs ((SV *)CvPADLIST(cv));	419	PUSHs ((SV *)CvPADLIST (cv));
		420	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
335	PUSHs ((SV *)cv);	421	PUSHs ((SV *)cv);
336		422
		423	CvDEPTH (cv) = 0;
337	get_padlist (cv);	424	get_padlist (aTHX_ cv);
338	}	425	}
339	}	426	}
340	#ifdef CXt_FORMAT
341	else if (CxTYPE(cx) == CXt_FORMAT)
342	{
343	/* I never used formats, so how should I know how these are implemented? */
344	/* my bold guess is as a simple, plain sub... */
345	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
346	}
347	#endif
348	}	427	}
349		428
350	if (top_si->si_type == PERLSI_MAIN)	429	if (top_si->si_type == PERLSI_MAIN)
351	break;	430	break;
352		431
353	top_si = top_si->si_prev;	432	top_si = top_si->si_prev;
354	ccstk = top_si->si_cxstack;	433	ccstk = top_si->si_cxstack;
355	cxix = top_si->si_cxix;	434	cxix = top_si->si_cxix;
356	}	435	}
357		436
358	PUTBACK;	437	PUTBACK;
359	}	438	}
360		439
361	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;
362	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	441	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
363	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;
364		445
365	#define VAR(name,type)c->name = PL_ ## name;	446	#define VAR(name,type)c->name = PL_ ## name;
366	# include "state.h"	447	# include "state.h"
367	#undef VAR	448	#undef VAR
368	}	449	}
…		…
371	* allocate various perl stacks. This is an exact copy	452	* allocate various perl stacks. This is an exact copy
372	* of perl.c:init_stacks, except that it uses less memory	453	* of perl.c:init_stacks, except that it uses less memory
373	* on the (sometimes correct) assumption that coroutines do	454	* on the (sometimes correct) assumption that coroutines do
374	* not usually need a lot of stackspace.	455	* not usually need a lot of stackspace.
375	*/	456	*/
		457	#if CORO_PREFER_PERL_FUNCTIONS
		458	# define coro_init_stacks init_stacks
		459	#else
376	static void	460	static void
377	coro_init_stacks ()	461	coro_init_stacks (pTHX)
378	{	462	{
379	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	463	PL_curstackinfo = new_stackinfo(64, 6);
380	PL_curstackinfo->si_type = PERLSI_MAIN;	464	PL_curstackinfo->si_type = PERLSI_MAIN;
381	PL_curstack = PL_curstackinfo->si_stack;	465	PL_curstack = PL_curstackinfo->si_stack;
382	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	466	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
383		467
384	PL_stack_base = AvARRAY(PL_curstack);	468	PL_stack_base = AvARRAY(PL_curstack);
385	PL_stack_sp = PL_stack_base;	469	PL_stack_sp = PL_stack_base;
386	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	470	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
387		471
388	New(50,PL_tmps_stack,96,SV*);	472	New(50,PL_tmps_stack,64,SV*);
389	PL_tmps_floor = -1;	473	PL_tmps_floor = -1;
390	PL_tmps_ix = -1;	474	PL_tmps_ix = -1;
391	PL_tmps_max = 96;	475	PL_tmps_max = 64;
392		476
393	New(54,PL_markstack,16,I32);	477	New(54,PL_markstack,16,I32);
394	PL_markstack_ptr = PL_markstack;	478	PL_markstack_ptr = PL_markstack;
395	PL_markstack_max = PL_markstack + 16;	479	PL_markstack_max = PL_markstack + 16;
396		480
…		…
400		484
401	New(54,PL_scopestack,16,I32);	485	New(54,PL_scopestack,16,I32);
402	PL_scopestack_ix = 0;	486	PL_scopestack_ix = 0;
403	PL_scopestack_max = 16;	487	PL_scopestack_max = 16;
404		488
405	New(54,PL_savestack,96,ANY);	489	New(54,PL_savestack,64,ANY);
406	PL_savestack_ix = 0;	490	PL_savestack_ix = 0;
407	PL_savestack_max = 96;	491	PL_savestack_max = 64;
408		492
409	#if !PERL_VERSION_ATLEAST (5,9,0)	493	#if !PERL_VERSION_ATLEAST (5,9,0)
410	New(54,PL_retstack,8,OP*);	494	New(54,PL_retstack,4,OP*);
411	PL_retstack_ix = 0;	495	PL_retstack_ix = 0;
412	PL_retstack_max = 8;	496	PL_retstack_max = 4;
413	#endif	497	#endif
414	}	498	}
		499	#endif
415		500
416	/*	501	/*
417	* destroy the stacks, the callchain etc...	502	* destroy the stacks, the callchain etc...
418	*/	503	*/
419	static void	504	static void
420	coro_destroy_stacks ()	505	coro_destroy_stacks (pTHX)
421	{	506	{
422	if (!IN_DESTRUCT)	507	if (!IN_DESTRUCT)
423	{	508	{
424	/* is this ugly, I ask? */	509	/* restore all saved variables and stuff */
425	LEAVE_SCOPE (0);	510	LEAVE_SCOPE (0);
		511	assert (PL_tmps_floor == -1);
426		512
427	/* sure it is, but more important: is it correct?? :/ */	513	/* free all temporaries */
428	FREETMPS;	514	FREETMPS;
		515	assert (PL_tmps_ix == -1);
429		516
		517	/* unwind all extra stacks */
430	/POPSTACK_TO (PL_mainstack);//D//use/	518	POPSTACK_TO (PL_mainstack);
		519
		520	/* unwind main stack */
		521	dounwind (-1);
431	}	522	}
432		523
433	while (PL_curstackinfo->si_next)	524	while (PL_curstackinfo->si_next)
434	PL_curstackinfo = PL_curstackinfo->si_next;	525	PL_curstackinfo = PL_curstackinfo->si_next;
435		526
436	while (PL_curstackinfo)	527	while (PL_curstackinfo)
437	{	528	{
438	PERL_SI *p = PL_curstackinfo->si_prev;	529	PERL_SI *p = PL_curstackinfo->si_prev;
439		530
440	{ /D//remove/
441	dSP;
442	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
443	PUTBACK; /* possibly superfluous */
444	}
445
446	if (!IN_DESTRUCT)	531	if (!IN_DESTRUCT)
447	{
448	dounwind (-1);/D//remove/
449	SvREFCNT_dec (PL_curstackinfo->si_stack);	532	SvREFCNT_dec (PL_curstackinfo->si_stack);
450	}
451		533
452	Safefree (PL_curstackinfo->si_cxstack);	534	Safefree (PL_curstackinfo->si_cxstack);
453	Safefree (PL_curstackinfo);	535	Safefree (PL_curstackinfo);
454	PL_curstackinfo = p;	536	PL_curstackinfo = p;
455	}	537	}
…		…
461	#if !PERL_VERSION_ATLEAST (5,9,0)	543	#if !PERL_VERSION_ATLEAST (5,9,0)
462	Safefree (PL_retstack);	544	Safefree (PL_retstack);
463	#endif	545	#endif
464	}	546	}
465		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
466	static void	581	static void
467	setup_coro (struct coro *coro)	582	setup_coro (pTHX_ struct coro *coro)
468	{	583	{
469	/*	584	/*
470	* emulate part of the perl startup here.	585	* emulate part of the perl startup here.
471	*/	586	*/
472
473	coro_init_stacks ();	587	coro_init_stacks (aTHX);
474		588
		589	PL_curcop = &PL_compiling;
		590	PL_in_eval = EVAL_NULL;
475	PL_curcop = 0;	591	PL_comppad = 0;
476	PL_in_eval = 0;
477	PL_curpm = 0;	592	PL_curpm = 0;
		593	PL_localizing = 0;
		594	PL_dirty = 0;
		595	PL_restartop = 0;
478		596
479	{	597	{
480	dSP;	598	dSP;
481	LOGOP myop;	599	LOGOP myop;
482		600
483	/* I have no idea why this is needed, but it is */
484	PUSHMARK (SP);
485
486	SvREFCNT_dec (GvAV (PL_defgv));	601	SvREFCNT_dec (GvAV (PL_defgv));
487	GvAV (PL_defgv) = coro->args; coro->args = 0;	602	GvAV (PL_defgv) = coro->args; coro->args = 0;
488		603
489	Zero (&myop, 1, LOGOP);	604	Zero (&myop, 1, LOGOP);
490	myop.op_next = Nullop;	605	myop.op_next = Nullop;
491	myop.op_flags = OPf_WANT_VOID;	606	myop.op_flags = OPf_WANT_VOID;
492		607
		608	PUSHMARK (SP);
		609	XPUSHs (av_shift (GvAV (PL_defgv)));
		610	PUTBACK;
493	PL_op = (OP *)&myop;	611	PL_op = (OP *)&myop;
494
495	PUSHMARK (SP);
496	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
497	PUTBACK;
498	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	612	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
499	SPAGAIN;	613	SPAGAIN;
500
501	ENTER; /* necessary e.g. for dounwind */
502	}	614	}
503	}
504		615
		616	ENTER; /* necessary e.g. for dounwind */
		617	}
		618
505	static void	619	static void
506	free_coro_mortal ()	620	free_coro_mortal (pTHX)
507	{	621	{
508	if (coro_mortal)	622	if (coro_mortal)
509	{	623	{
510	SvREFCNT_dec (coro_mortal);	624	SvREFCNT_dec (coro_mortal);
511	coro_mortal = 0;	625	coro_mortal = 0;
512	}	626	}
513	}	627	}
514		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 */
515	static void NOINLINE	632	static void NOINLINE
516	prepare_cctx (coro_cctx *cctx)	633	prepare_cctx (pTHX_ coro_cctx *cctx)
517	{	634	{
518	dSP;	635	dSP;
519	LOGOP myop;	636	LOGOP myop;
520		637
521	Zero (&myop, 1, LOGOP);	638	Zero (&myop, 1, LOGOP);
522	myop.op_next = PL_op;	639	myop.op_next = PL_op;
523	myop.op_flags = OPf_WANT_VOID;	640	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
524
525	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
526		641
527	PUSHMARK (SP);	642	PUSHMARK (SP);
		643	EXTEND (SP, 2);
		644	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
528	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	645	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
529	PUTBACK;	646	PUTBACK;
		647	PL_op = (OP *)&myop;
530	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
531	SPAGAIN;	649	SPAGAIN;
532	}	650	}
533		651
		652	/*
		653	* this is a _very_ stripped down perl interpreter ;)
		654	*/
534	static void	655	static void
535	coro_run (void *arg)	656	coro_run (void *arg)
536	{	657	{
		658	dTHX;
		659
537	/* coro_run is the alternative epilogue of transfer() */	660	/* coro_run is the alternative tail of transfer(), so unlock here. */
538	UNLOCK;	661	UNLOCK;
539		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
540	/*	672	/*
541	* 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
542	*/	678	*/
543	PL_top_env = &PL_start_env;	679	PL_top_env = main_top_env;
544		680	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
545	/* inject call to cctx_init */
546	prepare_cctx ((coro_cctx *)arg);
547
548	/* somebody will hit me for both perl_run and PL_restartop */
549	perl_run (PL_curinterp);
550
551	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
552	abort ();
553	}	681	}
554		682
555	static coro_cctx *	683	static coro_cctx *
556	cctx_new ()	684	cctx_new ()
557	{	685	{
558	coro_cctx *cctx;	686	coro_cctx *cctx;
		687	void *stack_start;
		688	size_t stack_size;
559		689
560	++cctx_count;	690	++cctx_count;
561		691
562	New (0, cctx, 1, coro_cctx);	692	Newz (0, cctx, 1, coro_cctx);
563		693
564	#if HAVE_MMAP	694	#if HAVE_MMAP
565		695
566	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	696	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
567	/* mmap suppsedly does allocate-on-write for us */	697	/* mmap supposedly does allocate-on-write for us */
568	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);
569		699
570	if (cctx->sptr == (void *)-1)	700	if (cctx->sptr != (void *)-1)
571	{
572	perror ("FATAL: unable to mmap stack for coroutine");
573	_exit (EXIT_FAILURE);
574	}	701	{
575
576	# if STACKGUARD	702	# if CORO_STACKGUARD
577	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	703	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
578	# 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);
579		714
580	#else
581
582	cctx->ssize = STACKSIZE * (long)sizeof (long);
583	New (0, cctx->sptr, STACKSIZE, long);
584
585	if (!cctx->sptr)	715	if (!cctx->sptr)
586	{	716	{
587	perror ("FATAL: unable to malloc stack for coroutine");	717	perror ("FATAL: unable to allocate stack for coroutine");
588	_exit (EXIT_FAILURE);	718	_exit (EXIT_FAILURE);
589	}	719	}
590		720
591	#endif	721	stack_start = cctx->sptr;
		722	stack_size = cctx->ssize;
		723	}
592		724
593	#if USE_VALGRIND	725	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
594	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
595	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
596	cctx->ssize + (char *)cctx->sptr
597	);
598	#endif
599
600	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);
601		727
602	return cctx;	728	return cctx;
603	}	729	}
604		730
605	static void	731	static void
606	cctx_free (coro_cctx *cctx)	732	cctx_destroy (coro_cctx *cctx)
607	{	733	{
608	if (!cctx)	734	if (!cctx)
609	return;	735	return;
610		736
611	--cctx_count;	737	--cctx_count;
612		738
613	#if USE_VALGRIND	739	#if CORO_USE_VALGRIND
614	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	740	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
615	#endif	741	#endif
616		742
617	#if HAVE_MMAP	743	#if HAVE_MMAP
		744	if (cctx->mapped)
618	munmap (cctx->sptr, cctx->ssize);	745	munmap (cctx->sptr, cctx->ssize);
619	#else	746	else
		747	#endif
620	Safefree (cctx->sptr);	748	Safefree (cctx->sptr);
621	#endif
622		749
623	Safefree (cctx);	750	Safefree (cctx);
624	}	751	}
625		752
626	static coro_cctx *	753	static coro_cctx *
627	cctx_get ()	754	cctx_get (pTHX)
628	{	755	{
629	coro_cctx *cctx;
630
631	if (cctx_first)	756	while (cctx_first)
632	{	757	{
		758	coro_cctx *cctx = cctx_first;
		759	cctx_first = cctx->next;
633	--cctx_idle;	760	--cctx_idle;
634	cctx = cctx_first;	761
635	cctx_first = cctx->next;	762	if (cctx->ssize >= coro_stacksize)
		763	return cctx;
		764
		765	cctx_destroy (cctx);
636	}	766	}
637	else	767
638	{
639	cctx = cctx_new ();
640	PL_op = PL_op->op_next;	768	PL_op = PL_op->op_next;
641	}
642
643	return cctx;	769	return cctx_new ();
644	}	770	}
645		771
646	static void	772	static void
647	cctx_put (coro_cctx *cctx)	773	cctx_put (coro_cctx *cctx)
648	{	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
649	++cctx_idle;	786	++cctx_idle;
650	cctx->next = cctx_first;	787	cctx->next = cctx_first;
651	cctx_first = cctx;	788	cctx_first = cctx;
652	}	789	}
653		790
		791	/ coroutine switching ***************************************************/
		792
654	/* never call directly, always through the coro_state_transfer global variable */	793	/* never call directly, always through the coro_state_transfer global variable */
655	static void NOINLINE	794	static void NOINLINE
656	transfer (struct coro prev, struct coro next, int flags)	795	transfer (pTHX_ struct coro prev, struct coro next)
657	{	796	{
658	dSTACKLEVEL;	797	dSTACKLEVEL;
659		798
660	/* sometimes transfer is only called to set idle_sp */	799	/* sometimes transfer is only called to set idle_sp */
661	if (flags == TRANSFER_SET_STACKLEVEL)	800	if (!next)
		801	{
662	((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	}
663	else if (prev != next)	805	else if (prev != next)
664	{	806	{
665	coro_cctx *prev__cctx;	807	coro_cctx *prev__cctx;
666		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
667	LOCK;	831	LOCK;
668		832
669	if (next->mainstack)	833	if (next->flags & CF_NEW)
670	{	834	{
671	/* coroutine already started */	835	/* need to start coroutine */
672	SAVE (prev, flags);	836	next->flags &= ~CF_NEW;
673	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);
674	}	843	}
675	else	844	else
676	{	845	{
677	/* need to start coroutine */	846	/* coroutine already started */
678	/* first get rid of the old state */	847	save_perl (aTHX_ prev);
679	SAVE (prev, -1);	848	load_perl (aTHX_ next);
680	/* setup coroutine call */
681	setup_coro (next);
682	/* need a stack */
683	next->cctx = 0;
684	}	849	}
685
686	if (!prev->cctx)
687	/* create a new empty context */
688	Newz (0, prev->cctx, 1, coro_cctx);
689		850
690	prev__cctx = prev->cctx;	851	prev__cctx = prev->cctx;
691		852
692	/* possibly "free" the cctx */	853	/* possibly "free" the cctx */
693	if (prev__cctx->idle_sp == STACKLEVEL)	854	if (prev__cctx->idle_sp == STACKLEVEL)
694	{	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
695	cctx_put (prev__cctx);	861	cctx_put (prev__cctx);
696	prev->cctx = 0;	862	prev__cctx->inuse = 0;
697	}	863	}
698		864
699	if (!next->cctx)	865	if (!next->cctx)
		866	{
700	next->cctx = cctx_get ();	867	next->cctx = cctx_get (aTHX);
		868	assert (!next->cctx->inuse);
		869	next->cctx->inuse = 1;
		870	}
701		871
702	if (prev__cctx != next->cctx)	872	if (prev__cctx != next->cctx)
703	{	873	{
704	prev__cctx->top_env = PL_top_env;	874	prev__cctx->top_env = PL_top_env;
705	PL_top_env = next->cctx->top_env;	875	PL_top_env = next->cctx->top_env;
706	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	876	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
707	}	877	}
708		878
709	free_coro_mortal ();	879	free_coro_mortal (aTHX);
710
711	UNLOCK;	880	UNLOCK;
712	}	881	}
713	}	882	}
714		883
715	struct transfer_args	884	struct transfer_args
716	{	885	{
717	struct coro prev, next;	886	struct coro prev, next;
718	int flags;
719	};	887	};
720		888
721	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	889	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
722		890
		891	/ high level stuff ******************************************************/
		892
723	static void	893	static int
724	coro_state_destroy (struct coro *coro)	894	coro_state_destroy (pTHX_ struct coro *coro)
725	{	895	{
726	if (coro->refcnt--)	896	if (coro->flags & CF_DESTROYED)
727	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 */
728		911
729	if (coro->mainstack && coro->mainstack != main_mainstack)	912	if (coro->mainstack && coro->mainstack != main_mainstack)
730	{	913	{
731	struct coro temp;	914	struct coro temp;
732		915
733	SAVE ((&temp), TRANSFER_SAVE_ALL);	916	assert (!(coro->flags & CF_RUNNING));
734	LOAD (coro);
735		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
736	coro_destroy_stacks ();	927	coro_destroy_stacks (aTHX);
737		928
738	LOAD ((&temp)); /* this will get rid of defsv etc.. */	929	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
739		930
740	coro->mainstack = 0;	931	coro->mainstack = 0;
741	}	932	}
742		933
743	cctx_free (coro->cctx);	934	cctx_destroy (coro->cctx);
744	SvREFCNT_dec (coro->args);	935	SvREFCNT_dec (coro->args);
745	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;
746	}	942	}
747		943
748	static int	944	static int
749	coro_state_clear (pTHX_ SV sv, MAGIC mg)	945	coro_state_free (pTHX_ SV sv, MAGIC mg)
750	{	946	{
751	struct coro coro = (struct coro )mg->mg_ptr;	947	struct coro coro = (struct coro )mg->mg_ptr;
752	mg->mg_ptr = 0;	948	mg->mg_ptr = 0;
753		949
		950	coro->hv = 0;
		951
		952	if (--coro->refcnt < 0)
		953	{
754	coro_state_destroy (coro);	954	coro_state_destroy (aTHX_ coro);
		955	Safefree (coro);
		956	}
755		957
756	return 0;	958	return 0;
757	}	959	}
758		960
759	static int	961	static int
…		…
766	return 0;	968	return 0;
767	}	969	}
768		970
769	static MGVTBL coro_state_vtbl = {	971	static MGVTBL coro_state_vtbl = {
770	0, 0, 0, 0,	972	0, 0, 0, 0,
771	coro_state_clear,	973	coro_state_free,
772	0,	974	0,
773	#ifdef MGf_DUP	975	#ifdef MGf_DUP
774	coro_state_dup,	976	coro_state_dup,
775	#else	977	#else
776	# define MGf_DUP 0	978	# define MGf_DUP 0
777	#endif	979	#endif
778	};	980	};
779		981
780	static struct coro *	982	static struct coro *
781	SvSTATE (SV *coro)	983	SvSTATE_ (pTHX_ SV *coro)
782	{	984	{
783	HV *stash;	985	HV *stash;
784	MAGIC *mg;	986	MAGIC *mg;
785		987
786	if (SvROK (coro))	988	if (SvROK (coro))
…		…
792	/* very slow, but rare, check */	994	/* very slow, but rare, check */
793	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	995	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
794	croak ("Coro::State object required");	996	croak ("Coro::State object required");
795	}	997	}
796		998
797	mg = SvMAGIC (coro);	999	mg = CORO_MAGIC (coro);
798	assert (mg->mg_type == PERL_MAGIC_ext);
799	return (struct coro *)mg->mg_ptr;	1000	return (struct coro *)mg->mg_ptr;
800	}	1001	}
801		1002
		1003	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1004
802	static void	1005	static void
803	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)
804	{	1007	{
805	ta->prev = SvSTATE (prev);	1008	ta->prev = SvSTATE (prev_sv);
806	ta->next = SvSTATE (next);	1009	ta->next = SvSTATE (next_sv);
807	ta->flags = flags;
808	}	1010	}
809		1011
810	static void	1012	static void
811	api_transfer (SV prev, SV next, int flags)	1013	api_transfer (SV prev_sv, SV next_sv)
812	{	1014	{
813	dTHX;	1015	dTHX;
814	struct transfer_args ta;	1016	struct transfer_args ta;
815		1017
816	prepare_transfer (&ta, prev, next, flags);	1018	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
817	TRANSFER (ta);	1019	TRANSFER (ta);
818	}	1020	}
819		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
820	/ Coro ******************************************************************/	1035	/ Coro ******************************************************************/
821		1036
822	#define PRIO_MAX 3
823	#define PRIO_HIGH 1
824	#define PRIO_NORMAL 0
825	#define PRIO_LOW -1
826	#define PRIO_IDLE -3
827	#define PRIO_MIN -4
828
829	/* for Coro.pm */
830	static GV coro_current, coro_idle;
831	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
832	static int coro_nready;
833
834	static void	1037	static void
835	coro_enq (SV *sv)	1038	coro_enq (pTHX_ SV *coro_sv)
836	{	1039	{
837	int prio;
838
839	if (SvTYPE (sv) != SVt_PVHV)
840	croak ("Coro::ready tried to enqueue something that is not a coroutine");
841
842	prio = SvSTATE (sv)->prio;
843
844	av_push (coro_ready [prio - PRIO_MIN], sv);	1040	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
845	coro_nready++;
846	}	1041	}
847		1042
848	static SV *	1043	static SV *
849	coro_deq (int min_prio)	1044	coro_deq (pTHX_ int min_prio)
850	{	1045	{
851	int prio = PRIO_MAX - PRIO_MIN;	1046	int prio = PRIO_MAX - PRIO_MIN;
852		1047
853	min_prio -= PRIO_MIN;	1048	min_prio -= PRIO_MIN;
854	if (min_prio < 0)	1049	if (min_prio < 0)
855	min_prio = 0;	1050	min_prio = 0;
856		1051
857	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1052	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
858	if (AvFILLp (coro_ready [prio]) >= 0)	1053	if (AvFILLp (coro_ready [prio]) >= 0)
859	{
860	coro_nready--;
861	return av_shift (coro_ready [prio]);	1054	return av_shift (coro_ready [prio]);
862	}
863		1055
864	return 0;	1056	return 0;
865	}	1057	}
866		1058
867	static void	1059	static int
868	api_ready (SV *coro)	1060	api_ready (SV *coro_sv)
869	{	1061	{
870	dTHX;	1062	dTHX;
		1063	struct coro *coro;
871		1064
872	if (SvROK (coro))	1065	if (SvROK (coro_sv))
873	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;
874		1074
875	LOCK;	1075	LOCK;
876	coro_enq (SvREFCNT_inc (coro));	1076	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1077	++coro_nready;
877	UNLOCK;	1078	UNLOCK;
878	}
879		1079
		1080	return 1;
		1081	}
		1082
880	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
881	prepare_schedule (struct transfer_args *ta)	1091	prepare_schedule (pTHX_ struct transfer_args *ta)
882	{	1092	{
883	SV current, prev, *next;	1093	SV prev_sv, next_sv;
884
885	current = GvSV (coro_current);
886		1094
887	for (;;)	1095	for (;;)
888	{	1096	{
889	LOCK;	1097	LOCK;
890	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;
891	UNLOCK;	1130	UNLOCK;
892
893	if (next)
894	break;	1131	break;
895
896	{
897	dSP;
898
899	ENTER;
900	SAVETMPS;
901
902	PUSHMARK (SP);
903	PUTBACK;
904	call_sv (GvSV (coro_idle), G_DISCARD);
905
906	FREETMPS;
907	LEAVE;
908	}	1132	}
909	}
910
911	prev = SvRV (current);
912	SvRV (current) = next;
913		1133
914	/* 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
915	LOCK;	1142	LOCK;
916	free_coro_mortal ();	1143	free_coro_mortal (aTHX);
		1144	coro_mortal = prev_sv;
917	UNLOCK;	1145	UNLOCK;
918	coro_mortal = prev;
919
920	ta->prev = SvSTATE (prev);
921	ta->next = SvSTATE (next);
922	ta->flags = TRANSFER_SAVE_ALL;
923	}	1146	}
924		1147
925	static void	1148	static void
926	prepare_cede (struct transfer_args *ta)	1149	prepare_cede (pTHX_ struct transfer_args *ta)
927	{	1150	{
928	LOCK;	1151	api_ready (coro_current);
929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
930	UNLOCK;
931
932	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;
933	}	1167	}
934		1168
935	static void	1169	static void
936	api_schedule (void)	1170	api_schedule (void)
937	{	1171	{
938	dTHX;	1172	dTHX;
939	struct transfer_args ta;	1173	struct transfer_args ta;
940		1174
941	prepare_schedule (&ta);	1175	prepare_schedule (aTHX_ &ta);
942	TRANSFER (ta);	1176	TRANSFER (ta);
943	}	1177	}
944		1178
945	static void	1179	static int
946	api_cede (void)	1180	api_cede (void)
947	{	1181	{
948	dTHX;	1182	dTHX;
949	struct transfer_args ta;	1183	struct transfer_args ta;
950		1184
951	prepare_cede (&ta);	1185	prepare_cede (aTHX_ &ta);
		1186
		1187	if (ta.prev != ta.next)
		1188	{
952	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;
953	}	1209	}
954		1210
955	MODULE = Coro::State PACKAGE = Coro::State	1211	MODULE = Coro::State PACKAGE = Coro::State
956		1212
957	PROTOTYPES: DISABLE	1213	PROTOTYPES: DISABLE
…		…
963	#endif	1219	#endif
964	BOOT_PAGESIZE;	1220	BOOT_PAGESIZE;
965		1221
966	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1222	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
967		1223
968	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1224	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
969	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1225	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
970	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));
971		1231
972	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;
973		1237
974	coroapi.ver = CORO_API_VERSION;	1238	coroapi.ver = CORO_API_VERSION;
975	coroapi.transfer = api_transfer;	1239	coroapi.transfer = api_transfer;
976		1240
977	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1241	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
985	HV *hv;	1249	HV *hv;
986	int i;	1250	int i;
987		1251
988	Newz (0, coro, 1, struct coro);	1252	Newz (0, coro, 1, struct coro);
989	coro->args = newAV ();	1253	coro->args = newAV ();
		1254	coro->save = CORO_SAVE_DEF;
		1255	coro->flags = CF_NEW;
990		1256
		1257	if (coro_first) coro_first->prev = coro;
		1258	coro->next = coro_first;
		1259	coro_first = coro;
		1260
991	hv = newHV ();	1261	coro->hv = hv = newHV ();
992	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;
993	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1263	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
994		1264
995	for (i = 1; i < items; i++)	1265	for (i = 1; i < items; i++)
996	av_push (coro->args, newSVsv (ST (i)));	1266	av_push (coro->args, newSVsv (ST (i)));
997	}	1267	}
998	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:
999	RETVAL	1287	RETVAL
1000		1288
1001	void	1289	void
1002	_set_stacklevel (...)	1290	_set_stacklevel (...)
1003	ALIAS:	1291	ALIAS:
1004	Coro::State::transfer = 1	1292	Coro::State::transfer = 1
1005	Coro::schedule = 2	1293	Coro::schedule = 2
1006	Coro::cede = 3	1294	Coro::cede = 3
1007	Coro::Cont::yield = 4	1295	Coro::cede_notself = 4
1008	CODE:	1296	CODE:
1009	{	1297	{
1010	struct transfer_args ta;	1298	struct transfer_args ta;
1011		1299
1012	switch (ix)	1300	switch (ix)
1013	{	1301	{
1014	case 0:	1302	case 0:
1015	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1303	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1016	ta.next = 0;	1304	ta.next = 0;
1017	ta.flags = TRANSFER_SET_STACKLEVEL;
1018	break;	1305	break;
1019		1306
1020	case 1:	1307	case 1:
1021	if (items != 3)	1308	if (items != 2)
1022	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);
1023		1310
1024	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1311	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1025	break;	1312	break;
1026		1313
1027	case 2:	1314	case 2:
1028	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1029	break;	1316	break;
1030		1317
1031	case 3:	1318	case 3:
1032	prepare_cede (&ta);	1319	prepare_cede (aTHX_ &ta);
1033	break;	1320	break;
1034		1321
1035	case 4:	1322	case 4:
1036	{	1323	if (!prepare_cede_notself (aTHX_ &ta))
1037	SV *yieldstack;	1324	XSRETURN_EMPTY;
1038	SV *sv;
1039	AV *defav = GvAV (PL_defgv);
1040		1325
1041	yieldstack = *hv_fetch (
1042	(HV *)SvRV (GvSV (coro_current)),
1043	"yieldstack", sizeof ("yieldstack") - 1,
1044	0
1045	);
1046
1047	/* set up @_ -- ugly */
1048	av_clear (defav);
1049	av_fill (defav, items - 1);
1050	while (items--)
1051	av_store (defav, items, SvREFCNT_inc (ST(items)));
1052
1053	sv = av_pop ((AV *)SvRV (yieldstack));
1054	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1055	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1056	ta.flags = 0;
1057	SvREFCNT_dec (sv);
1058	}
1059	break;	1326	break;
1060
1061	}	1327	}
1062		1328
		1329	BARRIER;
1063	TRANSFER (ta);	1330	TRANSFER (ta);
1064	}
1065		1331
1066	void	1332	if (GIMME_V != G_VOID && ta.next != ta.prev)
1067	_clone_state_from (SV dst, SV src)	1333	XSRETURN_YES;
		1334	}
		1335
		1336	bool
		1337	_destroy (SV *coro_sv)
1068	CODE:	1338	CODE:
1069	{	1339	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1070	struct coro *coro_src = SvSTATE (src);	1340	OUTPUT:
1071		1341	RETVAL
1072	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1073
1074	++coro_src->refcnt;
1075	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1076	}
1077		1342
1078	void	1343	void
1079	_exit (code)	1344	_exit (code)
1080	int code	1345	int code
1081	PROTOTYPE: $	1346	PROTOTYPE: $
1082	CODE:	1347	CODE:
1083	_exit (code);	1348	_exit (code);
1084		1349
1085	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
1086	cctx_count ()	1360	cctx_count ()
1087	CODE:	1361	CODE:
1088	RETVAL = cctx_count;	1362	RETVAL = cctx_count;
1089	OUTPUT:	1363	OUTPUT:
1090	RETVAL	1364	RETVAL
…		…
1094	CODE:	1368	CODE:
1095	RETVAL = cctx_idle;	1369	RETVAL = cctx_idle;
1096	OUTPUT:	1370	OUTPUT:
1097	RETVAL	1371	RETVAL
1098		1372
		1373	void
		1374	list ()
		1375	PPCODE:
		1376	{
		1377	struct coro *coro;
		1378	for (coro = coro_first; coro; coro = coro->next)
		1379	if (coro->hv)
		1380	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1381	}
		1382
		1383	void
		1384	_eval (Coro::State coro, SV *coderef)
		1385	CODE:
		1386	{
		1387	if (coro->mainstack)
		1388	{
		1389	struct coro temp;
		1390	Zero (&temp, 1, struct coro);
		1391	temp.save = CORO_SAVE_ALL;
		1392
		1393	if (!(coro->flags & CF_RUNNING))
		1394	{
		1395	save_perl (aTHX_ &temp);
		1396	load_perl (aTHX_ coro);
		1397	}
		1398
		1399	{
		1400	dSP;
		1401	ENTER;
		1402	SAVETMPS;
		1403	PUSHMARK (SP);
		1404	PUTBACK;
		1405	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1406	SPAGAIN;
		1407	FREETMPS;
		1408	LEAVE;
		1409	PUTBACK;
		1410	}
		1411
		1412	if (!(coro->flags & CF_RUNNING))
		1413	{
		1414	save_perl (aTHX_ coro);
		1415	load_perl (aTHX_ &temp);
		1416	}
		1417	}
		1418	}
		1419
		1420	SV *
		1421	is_ready (Coro::State coro)
		1422	PROTOTYPE: $
		1423	ALIAS:
		1424	is_ready = CF_READY
		1425	is_running = CF_RUNNING
		1426	is_new = CF_NEW
		1427	is_destroyed = CF_DESTROYED
		1428	CODE:
		1429	RETVAL = boolSV (coro->flags & ix);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	SV *
		1434	has_stack (Coro::State coro)
		1435	PROTOTYPE: $
		1436	CODE:
		1437	RETVAL = boolSV (!!coro->cctx);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	IV
		1442	rss (Coro::State coro)
		1443	PROTOTYPE: $
		1444	CODE:
		1445	RETVAL = coro_rss (coro);
		1446	OUTPUT:
		1447	RETVAL
		1448
		1449
1099	MODULE = Coro::State PACKAGE = Coro	1450	MODULE = Coro::State PACKAGE = Coro
1100		1451
1101	BOOT:	1452	BOOT:
1102	{	1453	{
1103	int i;	1454	int i;
		1455
		1456	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1457	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1458	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1459
		1460	coro_current = get_sv ("Coro::current", FALSE);
		1461	SvREADONLY_on (coro_current);
1104		1462
1105	coro_stash = gv_stashpv ("Coro", TRUE);	1463	coro_stash = gv_stashpv ("Coro", TRUE);
1106		1464
1107	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1465	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1108	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1466	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1109	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1467	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1110	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1468	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1111	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1469	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1112	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1470	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1113		1471
1114	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1115	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1116
1117	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1472	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1118	coro_ready[i] = newAV ();	1473	coro_ready[i] = newAV ();
1119		1474
1120	{	1475	{
1121	SV *sv = perl_get_sv("Coro::API", 1);	1476	SV *sv = perl_get_sv("Coro::API", 1);
1122		1477
1123	coroapi.schedule = api_schedule;	1478	coroapi.schedule = api_schedule;
		1479	coroapi.save = api_save;
1124	coroapi.cede = api_cede;	1480	coroapi.cede = api_cede;
		1481	coroapi.cede_notself = api_cede_notself;
1125	coroapi.ready = api_ready;	1482	coroapi.ready = api_ready;
		1483	coroapi.is_ready = api_is_ready;
1126	coroapi.nready = &coro_nready;	1484	coroapi.nready = &coro_nready;
1127	coroapi.current = coro_current;	1485	coroapi.current = coro_current;
1128		1486
1129	GCoroAPI = &coroapi;	1487	GCoroAPI = &coroapi;
1130	sv_setiv (sv, (IV)&coroapi);	1488	sv_setiv (sv, (IV)&coroapi);
1131	SvREADONLY_on (sv);	1489	SvREADONLY_on (sv);
1132	}	1490	}
1133	}	1491	}
		1492
		1493	void
		1494	_set_current (SV *current)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	SvREFCNT_dec (SvRV (coro_current));
		1498	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1134		1499
1135	int	1500	int
1136	prio (Coro::State coro, int newprio = 0)	1501	prio (Coro::State coro, int newprio = 0)
1137	ALIAS:	1502	ALIAS:
1138	nice = 1	1503	nice = 1
…		…
1141	RETVAL = coro->prio;	1506	RETVAL = coro->prio;
1142		1507
1143	if (items > 1)	1508	if (items > 1)
1144	{	1509	{
1145	if (ix)	1510	if (ix)
1146	newprio += coro->prio;	1511	newprio = coro->prio - newprio;
1147		1512
1148	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1513	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1149	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1514	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1150		1515
1151	coro->prio = newprio;	1516	coro->prio = newprio;
1152	}	1517	}
1153	}	1518	}
		1519	OUTPUT:
		1520	RETVAL
1154		1521
1155	void	1522	SV *
1156	ready (SV *self)	1523	ready (SV *self)
1157	PROTOTYPE: $	1524	PROTOTYPE: $
1158	CODE:	1525	CODE:
1159	api_ready (self);	1526	RETVAL = boolSV (api_ready (self));
		1527	OUTPUT:
		1528	RETVAL
1160		1529
1161	int	1530	int
1162	nready (...)	1531	nready (...)
1163	PROTOTYPE:	1532	PROTOTYPE:
1164	CODE:	1533	CODE:
1165	RETVAL = coro_nready;	1534	RETVAL = coro_nready;
1166	OUTPUT:	1535	OUTPUT:
1167	RETVAL	1536	RETVAL
1168		1537
		1538	# for async_pool speedup
		1539	void
		1540	_pool_1 (SV *cb)
		1541	CODE:
		1542	{
		1543	int i, len;
		1544	HV hv = (HV )SvRV (coro_current);
		1545	AV *defav = GvAV (PL_defgv);
		1546	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1547	AV *invoke_av;
		1548
		1549	if (!invoke)
		1550	croak ("\3terminate\2\n");
		1551
		1552	hv_store (hv, "desc", sizeof ("desc") - 1,
		1553	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1554
		1555	invoke_av = (AV *)SvRV (invoke);
		1556	len = av_len (invoke_av);
		1557
		1558	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1559
		1560	if (len > 0)
		1561	{
		1562	av_fill (defav, len - 1);
		1563	for (i = 0; i < len; ++i)
		1564	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1565	}
		1566
		1567	SvREFCNT_dec (invoke);
		1568	}
		1569
		1570	void
		1571	_pool_2 (SV *cb)
		1572	CODE:
		1573	{
		1574	struct coro *coro = SvSTATE (coro_current);
		1575
		1576	sv_setsv (cb, &PL_sv_undef);
		1577
		1578	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1579	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1580	croak ("\3terminate\2\n");
		1581
		1582	av_clear (GvAV (PL_defgv));
		1583	hv_store (SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1584	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1585	coro->save = CORO_SAVE_DEF;
		1586	coro->prio = 0;
		1587	av_push (av_async_pool, newSVsv (coro_current));
		1588	}
		1589
		1590
1169	MODULE = Coro::State PACKAGE = Coro::AIO	1591	MODULE = Coro::State PACKAGE = Coro::AIO
1170		1592
1171	SV *	1593	SV *
1172	_get_state ()	1594	_get_state ()
1173	CODE:	1595	CODE:
1174	{	1596	{
1175	struct {	1597	struct io_state *data;
1176	int errorno;
1177	int laststype;
1178	int laststatval;
1179	Stat_t statcache;
1180	} data;
1181		1598
		1599	RETVAL = newSV (sizeof (struct io_state));
		1600	data = (struct io_state *)SvPVX (RETVAL);
		1601	SvCUR_set (RETVAL, sizeof (struct io_state));
		1602	SvPOK_only (RETVAL);
		1603
1182	data.errorno = errno;	1604	data->errorno = errno;
1183	data.laststype = PL_laststype;	1605	data->laststype = PL_laststype;
1184	data.laststatval = PL_laststatval;	1606	data->laststatval = PL_laststatval;
1185	data.statcache = PL_statcache;	1607	data->statcache = PL_statcache;
1186
1187	RETVAL = newSVpvn ((char *)&data, sizeof data);
1188	}	1608	}
1189	OUTPUT:	1609	OUTPUT:
1190	RETVAL	1610	RETVAL
1191		1611
1192	void	1612	void
1193	_set_state (char *data_)	1613	_set_state (char *data_)
1194	PROTOTYPE: $	1614	PROTOTYPE: $
1195	CODE:	1615	CODE:
1196	{	1616	{
1197	struct {	1617	struct io_state data = (void )data_;
1198	int errorno;
1199	int laststype;
1200	int laststatval;
1201	Stat_t statcache;
1202	} data = (void )data_;
1203		1618
1204	errno = data->errorno;	1619	errno = data->errorno;
1205	PL_laststype = data->laststype;	1620	PL_laststype = data->laststype;
1206	PL_laststatval = data->laststatval;	1621	PL_laststatval = data->laststatval;
1207	PL_statcache = data->statcache;	1622	PL_statcache = data->statcache;
1208	}	1623	}
		1624

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Comparing Coro/Coro/State.xs (file contents): Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs. Revision 1.162 by root, Sun Sep 23 21:49:58 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.162 by root, Sun Sep 23 21:49:58 2007 UTC