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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45	#include <assert.h>	13	#include <assert.h>
46
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	# undef STACKGUARD
49	#endif
50
51	#ifndef STACKGUARD
52	# define STACKGUARD 0
53	#endif
54		14
55	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
56	# include <unistd.h>	16	# include <unistd.h>
57	# include <sys/mman.h>	17	# include <sys/mman.h>
58	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
73	#else	33	#else
74	# define PAGESIZE 0	34	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
76	#endif	36	#endif
77		37
78	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
79	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
80	* and should be unique. */	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
		93	/* The next macros try to return the current stack pointer, in an as
		94	* portable way as possible. */
81	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
83		97
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		99
86	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
87	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
88	#else	103	#else
89	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
90	#endif	106	#endif
91		107
92	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
93		109
94	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
100	#else	116	#else
101	# define LOCK (void)0	117	# define LOCK (void)0
102	# define UNLOCK (void)0	118	# define UNLOCK (void)0
103	#endif	119	#endif
104		120
		121	/* helper storage struct for Coro::AIO */
105	struct io_state	122	struct io_state
106	{	123	{
107	int errorno;	124	int errorno;
108	I32 laststype;	125	I32 laststype;
109	int laststatval;	126	int laststatval;
110	Stat_t statcache;	127	Stat_t statcache;
111	};	128	};
112		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
114	static AV main_mainstack; / used to differentiate between $main and others */	132	static AV main_mainstack; / used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
115	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
116	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
117		136
		137	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
118	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
119	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		152	};
120		153
121	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
122	typedef struct coro_cctx {	155	typedef struct coro_cctx {
123	struct coro_cctx *next;	156	struct coro_cctx *next;
124		157
125	/* the stack */	158	/* the stack */
126	void *sptr;	159	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
128		161
129	/* cpu state */	162	/* cpu state */
130	void idle_sp; / sp of top-level transfer/schedule/cede call */	163	void idle_sp; / sp of top-level transfer/schedule/cede call */
		164	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
131	JMPENV *top_env;	165	JMPENV *top_env;
132	coro_context cctx;	166	coro_context cctx;
133		167
134	int inuse;
135
136	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
137	int valgrind_id;	169	int valgrind_id;
138	#endif	170	#endif
		171	unsigned char flags;
139	} coro_cctx;	172	} coro_cctx;
140		173
141	enum {	174	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
144	CF_NEW = 0x0004, /* ahs never been switched to */	177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
145	};	179	};
146		180
147	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
148	struct coro {	182	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
157		191
158	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
159	AV defav; / @_ */	193	AV defav; / @_ */
160	SV defsv; / $_ */	194	SV defsv; / $_ */
161	SV errsv; / $@ */	195	SV errsv; / $@ */
		196	GV deffh; / default filehandle */
162	SV irssv; / $/ */	197	SV irssv; / $/ */
163	SV irssv_sv; / real $/ cache */	198	SV irssv_sv; / real $/ cache */
164		199
165	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
166	# include "state.h"	201	# include "state.h"
167	#undef VAR	202	#undef VAR
168		203
169	/* coro process data */	204	/* coro process data */
170	int prio;	205	int prio;
		206
		207	/* linked list */
		208	struct coro next, prev;
		209	HV hv; / the perl hash associated with this coro, if any */
171	};	210	};
172		211
173	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
175		214
		215	/ Coro ******************************************************************/
		216
		217	#define PRIO_MAX 3
		218	#define PRIO_HIGH 1
		219	#define PRIO_NORMAL 0
		220	#define PRIO_LOW -1
		221	#define PRIO_IDLE -3
		222	#define PRIO_MIN -4
		223
		224	/* for Coro.pm */
		225	static SV *coro_current;
		226	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		227	static int coro_nready;
		228	static struct coro *coro_first;
		229
		230	/ lowlevel stuff ********************************************************/
		231
176	static AV *	232	static AV *
177	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
178	{	234	{
179	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
180	AV newpadlist, newpad;	236	AV newpadlist, newpad;
181		237
182	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
194		250
195	return newpadlist;	251	return newpadlist;
196	}	252	}
197		253
198	static void	254	static void
199	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
200	{	256	{
201	/* may be during global destruction */	257	/* may be during global destruction */
202	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
203	{	259	{
204	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	281	AV *padlist;
226	AV av = (AV )mg->mg_obj;	282	AV av = (AV )mg->mg_obj;
227		283
228	/* casting is fun. */	284	/* casting is fun. */
229	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	285	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
230	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
231		287
232	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
233		289
234	return 0;	290	return 0;
235	}	291	}
…		…
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
246	: 0	302	: 0
247		303
248	/* the next two functions merely cache the padlists */	304	/* the next two functions merely cache the padlists */
249	static void	305	static void
250	get_padlist (CV *cv)	306	get_padlist (pTHX_ CV *cv)
251	{	307	{
252	MAGIC *mg = CORO_MAGIC (cv);	308	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	309	AV *av;
254		310
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	313	else
258	{	314	{
259	#if 0	315	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	316	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	317	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	318	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	319	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	320	SvREFCNT_dec (cp);
265	#else	321	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	322	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	323	#endif
268	}	324	}
269	}	325	}
270		326
271	static void	327	static void
272	put_padlist (CV *cv)	328	put_padlist (pTHX_ CV *cv)
273	{	329	{
274	MAGIC *mg = CORO_MAGIC (cv);	330	MAGIC *mg = CORO_MAGIC (cv);
275	AV *av;	331	AV *av;
276		332
277	if (!mg)	333	if (!mg)
…		…
288	av_extend (av, AvMAX (av) + 1);	344	av_extend (av, AvMAX (av) + 1);
289		345
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	347	}
292		348
		349	/ load & save, init *****************************************************/
		350
293	#define SB do {	351	#define SB do {
294	#define SE } while (0)	352	#define SE } while (0)
295		353
296	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	354	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
297		355
298	static void	356	static void
299	load_perl (Coro__State c)	357	load_perl (pTHX_ Coro__State c)
300	{	358	{
301	#define VAR(name,type) PL_ ## name = c->name;	359	#define VAR(name,type) PL_ ## name = c->name;
302	# include "state.h"	360	# include "state.h"
303	#undef VAR	361	#undef VAR
304		362
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	365	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		366	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		367
308	if (c->irssv)	368	if (c->irssv)
309	{	369	{
310	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	370	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		371	{
311	SvREFCNT_dec (c->irssv);	372	SvREFCNT_dec (c->irssv);
		373	c->irssv = 0;
		374	}
312	else	375	else
313	{	376	{
314	REPLACE_SV (PL_rs, c->irssv);	377	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);	379	sv_setsv (c->irssv_sv, PL_rs);
…		…
322	CV *cv;	385	CV *cv;
323		386
324	/* now do the ugly restore mess */	387	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	388	while ((cv = (CV *)POPs))
326	{	389	{
327	put_padlist (cv); /* mark this padlist as available */	390	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	391	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	392	CvPADLIST (cv) = (AV *)POPs;
330	}	393	}
331		394
332	PUTBACK;	395	PUTBACK;
333	}	396	}
334	}	397	}
335		398
336	static void	399	static void
337	save_perl (Coro__State c)	400	save_perl (pTHX_ Coro__State c)
338	{	401	{
339	{	402	{
340	dSP;	403	dSP;
341	I32 cxix = cxstack_ix;	404	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	405	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	408	/*
346	* the worst thing you can imagine happens first - we have to save	409	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	410	* (and reinitialize) all cv's in the whole callchain :(
348	*/	411	*/
349		412
350	PUSHs (Nullsv);	413	XPUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	414	/* this loop was inspired by pp_caller */
352	for (;;)	415	for (;;)
353	{	416	{
354	while (cxix >= 0)	417	while (cxix >= 0)
355	{	418	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	419	PERL_CONTEXT *cx = &ccstk[cxix--];
357		420
358	if (CxTYPE (cx) == CXt_SUB)	421	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
359	{	422	{
360	CV *cv = cx->blk_sub.cv;	423	CV *cv = cx->blk_sub.cv;
361		424
362	if (CvDEPTH (cv))	425	if (CvDEPTH (cv))
363	{	426	{
364	EXTEND (SP, 3);	427	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	428	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	430	PUSHs ((SV *)cv);
369		431
370	CvDEPTH (cv) = 0;	432	CvDEPTH (cv) = 0;
371	get_padlist (cv);	433	get_padlist (aTHX_ cv);
372	}	434	}
373	}	435	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	436	}
383		437
384	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
385	break;	439	break;
386		440
387	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
388	ccstk = top_si->si_cxstack;	442	ccstk = top_si->si_cxstack;
389	cxix = top_si->si_cxix;	443	cxix = top_si->si_cxix;
390	}	444	}
391		445
392	PUTBACK;	446	PUTBACK;
393	}	447	}
394		448
395	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	449	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	451	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		452	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
398	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	453	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
399		454
400	#define VAR(name,type)c->name = PL_ ## name;	455	#define VAR(name,type)c->name = PL_ ## name;
401	# include "state.h"	456	# include "state.h"
402	#undef VAR	457	#undef VAR
…		…
406	* allocate various perl stacks. This is an exact copy	461	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	462	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	463	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	464	* not usually need a lot of stackspace.
410	*/	465	*/
		466	#if CORO_PREFER_PERL_FUNCTIONS
		467	# define coro_init_stacks init_stacks
		468	#else
411	static void	469	static void
412	coro_init_stacks ()	470	coro_init_stacks (pTHX)
413	{	471	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	472	PL_curstackinfo = new_stackinfo(64, 6);
415	PL_curstackinfo->si_type = PERLSI_MAIN;	473	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	474	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
418		476
419	PL_stack_base = AvARRAY(PL_curstack);	477	PL_stack_base = AvARRAY(PL_curstack);
420	PL_stack_sp = PL_stack_base;	478	PL_stack_sp = PL_stack_base;
421	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
422		480
423	New(50,PL_tmps_stack,128,SV*);	481	New(50,PL_tmps_stack,64,SV*);
424	PL_tmps_floor = -1;	482	PL_tmps_floor = -1;
425	PL_tmps_ix = -1;	483	PL_tmps_ix = -1;
426	PL_tmps_max = 128;	484	PL_tmps_max = 64;
427		485
428	New(54,PL_markstack,32,I32);	486	New(54,PL_markstack,16,I32);
429	PL_markstack_ptr = PL_markstack;	487	PL_markstack_ptr = PL_markstack;
430	PL_markstack_max = PL_markstack + 32;	488	PL_markstack_max = PL_markstack + 16;
431		489
432	#ifdef SET_MARK_OFFSET	490	#ifdef SET_MARK_OFFSET
433	SET_MARK_OFFSET;	491	SET_MARK_OFFSET;
434	#endif	492	#endif
435		493
436	New(54,PL_scopestack,32,I32);	494	New(54,PL_scopestack,16,I32);
437	PL_scopestack_ix = 0;	495	PL_scopestack_ix = 0;
438	PL_scopestack_max = 32;	496	PL_scopestack_max = 16;
439		497
440	New(54,PL_savestack,64,ANY);	498	New(54,PL_savestack,64,ANY);
441	PL_savestack_ix = 0;	499	PL_savestack_ix = 0;
442	PL_savestack_max = 64;	500	PL_savestack_max = 64;
443		501
444	#if !PERL_VERSION_ATLEAST (5,9,0)	502	#if !PERL_VERSION_ATLEAST (5,9,0)
445	New(54,PL_retstack,16,OP*);	503	New(54,PL_retstack,4,OP*);
446	PL_retstack_ix = 0;	504	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	505	PL_retstack_max = 4;
448	#endif	506	#endif
449	}	507	}
		508	#endif
450		509
451	/*	510	/*
452	* destroy the stacks, the callchain etc...	511	* destroy the stacks, the callchain etc...
453	*/	512	*/
454	static void	513	static void
455	coro_destroy_stacks ()	514	coro_destroy_stacks (pTHX)
456	{	515	{
457	if (!IN_DESTRUCT)	516	if (!IN_DESTRUCT)
458	{	517	{
459	/* is this ugly, I ask? */	518	/* restore all saved variables and stuff */
460	LEAVE_SCOPE (0);	519	LEAVE_SCOPE (0);
		520	assert (PL_tmps_floor == -1);
461		521
462	/* sure it is, but more important: is it correct?? :/ */	522	/* free all temporaries */
463	FREETMPS;	523	FREETMPS;
		524	assert (PL_tmps_ix == -1);
464		525
		526	/* unwind all extra stacks */
465	/POPSTACK_TO (PL_mainstack);//D//use/	527	POPSTACK_TO (PL_mainstack);
		528
		529	/* unwind main stack */
		530	dounwind (-1);
466	}	531	}
467		532
468	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
470		535
471	while (PL_curstackinfo)	536	while (PL_curstackinfo)
472	{	537	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	538	PERL_SI *p = PL_curstackinfo->si_prev;
474		539
475	{ /D//remove/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	540	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/D//remove/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	541	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		542
487	Safefree (PL_curstackinfo->si_cxstack);	543	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	544	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	545	PL_curstackinfo = p;
490	}	546	}
…		…
496	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
497	Safefree (PL_retstack);	553	Safefree (PL_retstack);
498	#endif	554	#endif
499	}	555	}
500		556
		557	static size_t
		558	coro_rss (struct coro *coro)
		559	{
		560	size_t rss = sizeof (coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/ coroutine stack handling **********************************************/
		589
501	static void	590	static void
502	setup_coro (struct coro *coro)	591	setup_coro (pTHX_ struct coro *coro)
503	{	592	{
504	/*	593	/*
505	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
506	*/	595	*/
507
508	coro_init_stacks ();	596	coro_init_stacks (aTHX);
509		597
510	PL_curcop = &PL_compiling;	598	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	599	PL_in_eval = EVAL_NULL;
		600	PL_comppad = 0;
512	PL_curpm = 0;	601	PL_curpm = 0;
513	PL_localizing = 0;	602	PL_localizing = 0;
514	PL_dirty = 0;	603	PL_dirty = 0;
515	PL_restartop = 0;	604	PL_restartop = 0;
516		605
…		…
524	Zero (&myop, 1, LOGOP);	613	Zero (&myop, 1, LOGOP);
525	myop.op_next = Nullop;	614	myop.op_next = Nullop;
526	myop.op_flags = OPf_WANT_VOID;	615	myop.op_flags = OPf_WANT_VOID;
527		616
528	PUSHMARK (SP);	617	PUSHMARK (SP);
529	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	618	XPUSHs (av_shift (GvAV (PL_defgv)));
530	PUTBACK;	619	PUTBACK;
531	PL_op = (OP *)&myop;	620	PL_op = (OP *)&myop;
532	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
533	SPAGAIN;	622	SPAGAIN;
534	}	623	}
535		624
536	ENTER; /* necessary e.g. for dounwind */	625	ENTER; /* necessary e.g. for dounwind */
537	}	626	}
538		627
539	static void	628	static void
540	free_coro_mortal ()	629	free_coro_mortal (pTHX)
541	{	630	{
542	if (coro_mortal)	631	if (coro_mortal)
543	{	632	{
544	SvREFCNT_dec (coro_mortal);	633	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	634	coro_mortal = 0;
546	}	635	}
547	}	636	}
548		637
		638	static int
		639	runops_coro (pTHX)
		640	{
		641	COP *oldcop = 0;
		642	int oldcxix = -2;
		643
		644	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		645	{
		646	PERL_ASYNC_CHECK ();
		647
		648	if (PL_op->op_type == OP_LEAVESUB)
		649	{
		650	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		651	SV bot, top;
		652	AV av = newAV (); / return values */
		653	runops_proc_t old_runops = PL_runops;
		654	dSP;
		655	ENTER;
		656	SAVETMPS;
		657	EXTEND (SP, 3);
		658	PL_runops = RUNOPS_DEFAULT;
		659
		660	GV *gv = CvGV (cx->blk_sub.cv);
		661	SV *fullname = sv_2mortal (newSV (0));
		662	if (isGV (gv))
		663	gv_efullname3 (fullname, gv, 0);
		664
		665	bot = PL_stack_base + cx->blk_oldsp + 1;
		666	top = cx->blk_gimme == G_ARRAY ? SP + 1
		667	: cx->blk_gimme == G_SCALAR ? bot + 1
		668	: bot;
		669
		670	while (bot < top)
		671	av_push (av, SvREFCNT_inc (*bot++));
		672
		673	PUSHMARK (SP);
		674	PUSHs (&PL_sv_no);
		675	PUSHs (fullname);
		676	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		677	PUTBACK;
		678	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		679	SPAGAIN;
		680
		681	FREETMPS;
		682	LEAVE;
		683	PL_runops = old_runops;
		684	}
		685
		686	if (oldcop != PL_curcop)
		687	{
		688	oldcop = PL_curcop;
		689
		690	if (PL_curcop != &PL_compiling)
		691	{
		692	runops_proc_t old_runops = PL_runops;
		693	dSP;
		694	ENTER;
		695	SAVETMPS;
		696	EXTEND (SP, 3);
		697	PL_runops = RUNOPS_DEFAULT;
		698
		699	if (oldcxix != cxstack_ix)
		700	{
		701	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		702
		703	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		704	{
		705	GV *gv = CvGV (cx->blk_sub.cv);
		706	SV *fullname = sv_2mortal (newSV (0));
		707	if (isGV (gv))
		708	gv_efullname3 (fullname, gv, 0);
		709
		710	PUSHMARK (SP);
		711	PUSHs (&PL_sv_yes);
		712	PUSHs (fullname);
		713	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		714	PUTBACK;
		715	call_pv ("Coro::_do_trace_sub", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		716	SPAGAIN;
		717	}
		718
		719	oldcxix = cxstack_ix;
		720	}
		721
		722	if (0) {
		723	PUSHMARK (SP);
		724	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		725	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		726	PUTBACK;
		727	call_pv ("Coro::_do_trace_line", G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		728	SPAGAIN;
		729	}
		730
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = old_runops;
		734	}
		735	}
		736	}
		737
		738	TAINT_NOT;
		739	return 0;
		740	}
		741
549	/* inject a fake call to Coro::State::_cctx_init into the execution */	742	/* inject a fake call to Coro::State::_cctx_init into the execution */
		743	/* _cctx_init should be careful, as it could be called at almost any time */
		744	/* during execution of a perl program */
550	static void NOINLINE	745	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	746	prepare_cctx (pTHX_ coro_cctx *cctx)
552	{	747	{
553	dSP;	748	dSP;
554	LOGOP myop;	749	LOGOP myop;
		750
		751	PL_top_env = &PL_start_env;
		752
		753	if (cctx->flags & CC_TRACE)
		754	PL_runops = runops_coro;
555		755
556	Zero (&myop, 1, LOGOP);	756	Zero (&myop, 1, LOGOP);
557	myop.op_next = PL_op;	757	myop.op_next = PL_op;
558	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;	758	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
559		759
…		…
565	PL_op = (OP *)&myop;	765	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	766	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	767	SPAGAIN;
568	}	768	}
569		769
		770	/*
		771	* this is a _very_ stripped down perl interpreter ;)
		772	*/
570	static void	773	static void
571	coro_run (void *arg)	774	coro_run (void *arg)
572	{	775	{
		776	dTHX;
		777
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	778	/* coro_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	779	UNLOCK;
575		780
576	/*	781	/* we now skip the entersub that lead to transfer() */
577	* this is a _very_ stripped down perl interpreter ;)	782	PL_op = PL_op->op_next;
578	*/
579	PL_top_env = &PL_start_env;
580		783
581	/* inject call to cctx_init */	784	/* inject a fake subroutine call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	785	prepare_cctx (aTHX_ (coro_cctx *)arg);
583		786
584	/* somebody will hit me for both perl_run and PL_restartop */	787	/* somebody or something will hit me for both perl_run and PL_restartop */
585	PL_restartop = PL_op;	788	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	789	perl_run (PL_curinterp);
587		790
588	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	791	/*
589	abort ();	792	* If perl-run returns we assume exit() was being called or the coro
		793	* fell off the end, which seems to be the only valid (non-bug)
		794	* reason for perl_run to return. We try to exit by jumping to the
		795	* bootstrap-time "top" top_env, as we cannot restore the "main"
		796	* coroutine as Coro has no such concept
		797	*/
		798	PL_top_env = main_top_env;
		799	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
590	}	800	}
591		801
592	static coro_cctx *	802	static coro_cctx *
593	cctx_new ()	803	cctx_new ()
594	{	804	{
595	coro_cctx *cctx;	805	coro_cctx *cctx;
		806	void *stack_start;
		807	size_t stack_size;
596		808
597	++cctx_count;	809	++cctx_count;
598		810
599	Newz (0, cctx, 1, coro_cctx);	811	Newz (0, cctx, 1, coro_cctx);
600		812
601	#if HAVE_MMAP	813	#if HAVE_MMAP
602		814
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	816	/* mmap supposedly does allocate-on-write for us */
605	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	817	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
606		818
607	if (cctx->sptr == (void *)-1)	819	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	820	{
612
613	# if STACKGUARD	821	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	822	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# endif	823	# endif
		824	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		825	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		826	cctx->flags \|= CC_MAPPED;
		827	}
		828	else
		829	#endif
		830	{
		831	cctx->ssize = coro_stacksize * (long)sizeof (long);
		832	New (0, cctx->sptr, coro_stacksize, long);
616		833
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	834	if (!cctx->sptr)
623	{	835	{
624	perror ("FATAL: unable to malloc stack for coroutine");	836	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	837	_exit (EXIT_FAILURE);
626	}	838	}
627		839
628	#endif	840	stack_start = cctx->sptr;
		841	stack_size = cctx->ssize;
		842	}
629		843
630	#if USE_VALGRIND	844	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	845	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
638		846
639	return cctx;	847	return cctx;
640	}	848	}
641		849
642	static void	850	static void
…		…
645	if (!cctx)	853	if (!cctx)
646	return;	854	return;
647		855
648	--cctx_count;	856	--cctx_count;
649		857
650	#if USE_VALGRIND	858	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	859	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	860	#endif
653		861
654	#if HAVE_MMAP	862	#if HAVE_MMAP
		863	if (cctx->flags & CC_MAPPED)
655	munmap (cctx->sptr, cctx->ssize);	864	munmap (cctx->sptr, cctx->ssize);
656	#else	865	else
		866	#endif
657	Safefree (cctx->sptr);	867	Safefree (cctx->sptr);
658	#endif
659		868
660	Safefree (cctx);	869	Safefree (cctx);
661	}	870	}
662		871
663	static coro_cctx *	872	static coro_cctx *
664	cctx_get ()	873	cctx_get (pTHX)
665	{	874	{
666	coro_cctx *cctx;
667
668	if (cctx_first)	875	while (cctx_first)
669	{	876	{
670	cctx = cctx_first;	877	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	878	cctx_first = cctx->next;
672	--cctx_idle;	879	--cctx_idle;
673	}	880
674	else	881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
675	{	882	return cctx;
676	cctx = cctx_new ();	883
677	PL_op = PL_op->op_next;	884	cctx_destroy (cctx);
678	}	885	}
679		886
680	return cctx;	887	return cctx_new ();
681	}	888	}
682		889
683	static void	890	static void
684	cctx_put (coro_cctx *cctx)	891	cctx_put (coro_cctx *cctx)
685	{	892	{
…		…
688	{	895	{
689	coro_cctx *first = cctx_first;	896	coro_cctx *first = cctx_first;
690	cctx_first = first->next;	897	cctx_first = first->next;
691	--cctx_idle;	898	--cctx_idle;
692		899
693	assert (!first->inuse);
694	cctx_destroy (first);	900	cctx_destroy (first);
695	}	901	}
696		902
697	++cctx_idle;	903	++cctx_idle;
698	cctx->next = cctx_first;	904	cctx->next = cctx_first;
699	cctx_first = cctx;	905	cctx_first = cctx;
700	}	906	}
701		907
		908	/ coroutine switching ***************************************************/
		909
702	/* never call directly, always through the coro_state_transfer global variable */	910	/* never call directly, always through the coro_state_transfer global variable */
703	static void NOINLINE	911	static void NOINLINE
704	transfer (struct coro prev, struct coro next)	912	transfer (pTHX_ struct coro prev, struct coro next)
705	{	913	{
706	dSTACKLEVEL;	914	dSTACKLEVEL;
707		915
708	/* sometimes transfer is only called to set idle_sp */	916	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	917	if (!next)
710	{	918	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	920	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
713	}	921	}
714	else if (prev != next)	922	else if (prev != next)
715	{	923	{
716	coro_cctx *prev__cctx;	924	coro_cctx *prev__cctx;
717		925
718	if (prev->flags & CF_NEW)	926	if (prev->flags & CF_NEW)
719	{	927	{
720	/* create a new empty context */	928	/* create a new empty context */
721	Newz (0, prev->cctx, 1, coro_cctx);	929	Newz (0, prev->cctx, 1, coro_cctx);
722	prev->cctx->inuse = 1;
723	prev->flags &= ~CF_NEW;	930	prev->flags &= ~CF_NEW;
724	prev->flags \|= CF_RUNNING;	931	prev->flags \|= CF_RUNNING;
725	}	932	}
726		933
727	/TODO: must not croak here /	934	/TODO: must not croak here /
728	if (!prev->flags & CF_RUNNING)	935	if (!prev->flags & CF_RUNNING)
729	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	936	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
730		937
731	if (next->flags & CF_RUNNING)	938	if (next->flags & CF_RUNNING)
732	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	939	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		940
		941	if (next->flags & CF_DESTROYED)
		942	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
733		943
734	prev->flags &= ~CF_RUNNING;	944	prev->flags &= ~CF_RUNNING;
735	next->flags \|= CF_RUNNING;	945	next->flags \|= CF_RUNNING;
736		946
737	LOCK;	947	LOCK;
…		…
739	if (next->flags & CF_NEW)	949	if (next->flags & CF_NEW)
740	{	950	{
741	/* need to start coroutine */	951	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	952	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */	953	/* first get rid of the old state */
744	save_perl (prev);	954	save_perl (aTHX_ prev);
745	/* setup coroutine call */	955	/* setup coroutine call */
746	setup_coro (next);	956	setup_coro (aTHX_ next);
747	/* need a new stack */
748	assert (!next->cctx);
749	}	957	}
750	else	958	else
751	{	959	{
752	/* coroutine already started */	960	/* coroutine already started */
753	save_perl (prev);	961	save_perl (aTHX_ prev);
754	load_perl (next);	962	load_perl (aTHX_ next);
755	}	963	}
756		964
757	prev__cctx = prev->cctx;	965	prev__cctx = prev->cctx;
758		966
759	/* possibly "free" the cctx */	967	/* possibly "free" the cctx */
760	if (prev__cctx->idle_sp == STACKLEVEL)	968	if (prev__cctx->idle_sp == STACKLEVEL)
761	{	969	{
762	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	970	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
763	assert (PL_top_env == prev__cctx->top_env);	971	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
764		972
765	prev->cctx = 0;	973	prev->cctx = 0;
766		974
767	cctx_put (prev__cctx);	975	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;
769	}	976	}
770		977
771	if (!next->cctx)	978	if (!next->cctx)
772	{
773	next->cctx = cctx_get ();	979	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;
776	}
777		980
778	if (prev__cctx != next->cctx)	981	if (prev__cctx != next->cctx)
779	{	982	{
780	prev__cctx->top_env = PL_top_env;	983	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	984	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	986	}
784		987
785	free_coro_mortal ();	988	free_coro_mortal (aTHX);
786
787	UNLOCK;	989	UNLOCK;
788	}	990	}
789	}	991	}
790		992
791	struct transfer_args	993	struct transfer_args
792	{	994	{
793	struct coro prev, next;	995	struct coro prev, next;
794	};	996	};
795		997
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
797		999
		1000	/ high level stuff ******************************************************/
		1001
798	static void	1002	static int
799	coro_state_destroy (struct coro *coro)	1003	coro_state_destroy (pTHX_ struct coro *coro)
800	{	1004	{
801	if (coro->refcnt--)	1005	if (coro->flags & CF_DESTROYED)
802	return;	1006	return 0;
		1007
		1008	coro->flags \|= CF_DESTROYED;
		1009
		1010	if (coro->flags & CF_READY)
		1011	{
		1012	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1013	/* alternative: look through all ready queues and remove the coro */
		1014	LOCK;
		1015	--coro_nready;
		1016	UNLOCK;
		1017	}
		1018	else
		1019	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
803		1020
804	if (coro->mainstack && coro->mainstack != main_mainstack)	1021	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	1022	{
806	struct coro temp;	1023	struct coro temp;
		1024
		1025	assert (!(coro->flags & CF_RUNNING));
		1026
807	Zero (&temp, 1, struct coro);	1027	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;	1028	temp.save = CORO_SAVE_ALL;
809		1029
810	if (coro->flags & CF_RUNNING)	1030	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	1031	croak ("FATAL: tried to destroy currently running coroutine");
812		1032
813	save_perl (&temp);	1033	save_perl (aTHX_ &temp);
814	load_perl (coro);	1034	load_perl (aTHX_ coro);
815		1035
816	coro_destroy_stacks ();	1036	coro_destroy_stacks (aTHX);
817		1037
818	load_perl (&temp); /* this will get rid of defsv etc.. */	1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
819		1039
820	coro->mainstack = 0;	1040	coro->mainstack = 0;
821	}	1041	}
822		1042
823	cctx_destroy (coro->cctx);	1043	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	1044	SvREFCNT_dec (coro->args);
825	Safefree (coro);	1045
		1046	if (coro->next) coro->next->prev = coro->prev;
		1047	if (coro->prev) coro->prev->next = coro->next;
		1048	if (coro == coro_first) coro_first = coro->next;
		1049
		1050	return 1;
826	}	1051	}
827		1052
828	static int	1053	static int
829	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1054	coro_state_free (pTHX_ SV sv, MAGIC mg)
830	{	1055	{
831	struct coro coro = (struct coro )mg->mg_ptr;	1056	struct coro coro = (struct coro )mg->mg_ptr;
832	mg->mg_ptr = 0;	1057	mg->mg_ptr = 0;
833		1058
		1059	coro->hv = 0;
		1060
		1061	if (--coro->refcnt < 0)
		1062	{
834	coro_state_destroy (coro);	1063	coro_state_destroy (aTHX_ coro);
		1064	Safefree (coro);
		1065	}
835		1066
836	return 0;	1067	return 0;
837	}	1068	}
838		1069
839	static int	1070	static int
…		…
846	return 0;	1077	return 0;
847	}	1078	}
848		1079
849	static MGVTBL coro_state_vtbl = {	1080	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	1081	0, 0, 0, 0,
851	coro_state_clear,	1082	coro_state_free,
852	0,	1083	0,
853	#ifdef MGf_DUP	1084	#ifdef MGf_DUP
854	coro_state_dup,	1085	coro_state_dup,
855	#else	1086	#else
856	# define MGf_DUP 0	1087	# define MGf_DUP 0
857	#endif	1088	#endif
858	};	1089	};
859		1090
860	static struct coro *	1091	static struct coro *
861	SvSTATE (SV *coro)	1092	SvSTATE_ (pTHX_ SV *coro)
862	{	1093	{
863	HV *stash;	1094	HV *stash;
864	MAGIC *mg;	1095	MAGIC *mg;
865		1096
866	if (SvROK (coro))	1097	if (SvROK (coro))
…		…
872	/* very slow, but rare, check */	1103	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");	1105	croak ("Coro::State object required");
875	}	1106	}
876		1107
877	mg = SvMAGIC (coro);	1108	mg = CORO_MAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;	1109	return (struct coro *)mg->mg_ptr;
880	}	1110	}
881		1111
		1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1113
882	static void	1114	static void
883	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1115	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
884	{	1116	{
885	ta->prev = SvSTATE (prev_sv);	1117	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	1118	ta->next = SvSTATE (next_sv);
887	}	1119	}
888		1120
889	static void	1121	static void
890	api_transfer (SV prev_sv, SV next_sv)	1122	api_transfer (SV prev_sv, SV next_sv)
891	{	1123	{
		1124	dTHX;
892	struct transfer_args ta;	1125	struct transfer_args ta;
893		1126
894	prepare_transfer (&ta, prev_sv, next_sv);	1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	1128	TRANSFER (ta);
896	}	1129	}
897		1130
898	static int	1131	static int
899	api_save (SV *coro_sv, int new_save)	1132	api_save (SV *coro_sv, int new_save)
900	{	1133	{
		1134	dTHX;
901	struct coro *coro = SvSTATE (coro_sv);	1135	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;	1136	int old_save = coro->save;
903		1137
904	if (new_save >= 0)	1138	if (new_save >= 0)
905	coro->save = new_save;	1139	coro->save = new_save;
…		…
907	return old_save;	1141	return old_save;
908	}	1142	}
909		1143
910	/ Coro ******************************************************************/	1144	/ Coro ******************************************************************/
911		1145
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	1146	static void
925	coro_enq (SV *coro_sv)	1147	coro_enq (pTHX_ SV *coro_sv)
926	{	1148	{
927	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1149	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
928	coro_nready++;
929	}	1150	}
930		1151
931	static SV *	1152	static SV *
932	coro_deq (int min_prio)	1153	coro_deq (pTHX_ int min_prio)
933	{	1154	{
934	int prio = PRIO_MAX - PRIO_MIN;	1155	int prio = PRIO_MAX - PRIO_MIN;
935		1156
936	min_prio -= PRIO_MIN;	1157	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	1158	if (min_prio < 0)
938	min_prio = 0;	1159	min_prio = 0;
939		1160
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1162	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1163	return av_shift (coro_ready [prio]);
945	}
946		1164
947	return 0;	1165	return 0;
948	}	1166	}
949		1167
950	static int	1168	static int
951	api_ready (SV *coro_sv)	1169	api_ready (SV *coro_sv)
952	{	1170	{
		1171	dTHX;
953	struct coro *coro;	1172	struct coro *coro;
954		1173
955	if (SvROK (coro_sv))	1174	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1175	coro_sv = SvRV (coro_sv);
957		1176
958	coro = SvSTATE (coro_sv);	1177	coro = SvSTATE (coro_sv);
959		1178
960	if (coro->flags & CF_READY)	1179	if (coro->flags & CF_READY)
961	return 0;	1180	return 0;
962		1181
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags \|= CF_READY;	1182	coro->flags \|= CF_READY;
969		1183
970	LOCK;	1184	LOCK;
971	coro_enq (SvREFCNT_inc (coro_sv));	1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1186	++coro_nready;
972	UNLOCK;	1187	UNLOCK;
973		1188
974	return 1;	1189	return 1;
975	}	1190	}
976		1191
977	static int	1192	static int
978	api_is_ready (SV *coro_sv)	1193	api_is_ready (SV *coro_sv)
979	{	1194	{
		1195	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1196	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1197	}
982		1198
983	static void	1199	static void
984	prepare_schedule (struct transfer_args *ta)	1200	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1201	{
986	SV prev, next;	1202	SV prev_sv, next_sv;
987		1203
988	for (;;)	1204	for (;;)
989	{	1205	{
990	LOCK;	1206	LOCK;
991	next = coro_deq (PRIO_MIN);	1207	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1208
		1209	/* nothing to schedule: call the idle handler */
		1210	if (!next_sv)
		1211	{
		1212	dSP;
		1213	UNLOCK;
		1214
		1215	ENTER;
		1216	SAVETMPS;
		1217
		1218	PUSHMARK (SP);
		1219	PUTBACK;
		1220	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1221
		1222	FREETMPS;
		1223	LEAVE;
		1224	continue;
		1225	}
		1226
		1227	ta->next = SvSTATE (next_sv);
		1228
		1229	/* cannot transfer to destroyed coros, skip and look for next */
		1230	if (ta->next->flags & CF_DESTROYED)
		1231	{
		1232	UNLOCK;
		1233	SvREFCNT_dec (next_sv);
		1234	/* coro_nready is already taken care of by destroy */
		1235	continue;
		1236	}
		1237
		1238	--coro_nready;
992	UNLOCK;	1239	UNLOCK;
993
994	if (next)
995	break;	1240	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1241	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1242
1015	/* free this only after the transfer */	1243	/* free this only after the transfer */
1016	LOCK;	1244	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();	1245	SvRV_set (coro_current, next_sv);
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1246	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);
1026		1247
1027	assert (ta->next->flags & CF_READY);	1248	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1249	ta->next->flags &= ~CF_READY;
		1250
		1251	LOCK;
		1252	free_coro_mortal (aTHX);
		1253	coro_mortal = prev_sv;
		1254	UNLOCK;
1029	}	1255	}
1030		1256
1031	static void	1257	static void
1032	prepare_cede (struct transfer_args *ta)	1258	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1259	{
1034	api_ready (coro_current);	1260	api_ready (coro_current);
1035
1036	prepare_schedule (ta);	1261	prepare_schedule (aTHX_ ta);
		1262	}
		1263
		1264	static int
		1265	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1266	{
		1267	if (coro_nready)
		1268	{
		1269	SV *prev = SvRV (coro_current);
		1270	prepare_schedule (aTHX_ ta);
		1271	api_ready (prev);
		1272	return 1;
		1273	}
		1274	else
		1275	return 0;
1037	}	1276	}
1038		1277
1039	static void	1278	static void
1040	api_schedule (void)	1279	api_schedule (void)
1041	{	1280	{
		1281	dTHX;
1042	struct transfer_args ta;	1282	struct transfer_args ta;
1043		1283
1044	prepare_schedule (&ta);	1284	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1285	TRANSFER (ta);
1046	}	1286	}
1047		1287
1048	static void	1288	static int
1049	api_cede (void)	1289	api_cede (void)
1050	{	1290	{
		1291	dTHX;
1051	struct transfer_args ta;	1292	struct transfer_args ta;
1052		1293
1053	prepare_cede (&ta);	1294	prepare_cede (aTHX_ &ta);
		1295
		1296	if (ta.prev != ta.next)
		1297	{
1054	TRANSFER (ta);	1298	TRANSFER (ta);
		1299	return 1;
		1300	}
		1301	else
		1302	return 0;
		1303	}
		1304
		1305	static int
		1306	api_cede_notself (void)
		1307	{
		1308	dTHX;
		1309	struct transfer_args ta;
		1310
		1311	if (prepare_cede_notself (aTHX_ &ta))
		1312	{
		1313	TRANSFER (ta);
		1314	return 1;
		1315	}
		1316	else
		1317	return 0;
1055	}	1318	}
1056		1319
1057	MODULE = Coro::State PACKAGE = Coro::State	1320	MODULE = Coro::State PACKAGE = Coro::State
1058		1321
1059	PROTOTYPES: DISABLE	1322	PROTOTYPES: DISABLE
…		…
1064	MUTEX_INIT (&coro_mutex);	1327	MUTEX_INIT (&coro_mutex);
1065	#endif	1328	#endif
1066	BOOT_PAGESIZE;	1329	BOOT_PAGESIZE;
1067		1330
1068	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1331	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1332
		1333	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1334	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1335	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1336	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1069		1337
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1341	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1342	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1343	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1075		1345
1076	main_mainstack = PL_mainstack;	1346	main_mainstack = PL_mainstack;
		1347	main_top_env = PL_top_env;
		1348
		1349	while (main_top_env->je_prev)
		1350	main_top_env = main_top_env->je_prev;
1077		1351
1078	coroapi.ver = CORO_API_VERSION;	1352	coroapi.ver = CORO_API_VERSION;
1079	coroapi.transfer = api_transfer;	1353	coroapi.transfer = api_transfer;
1080		1354
1081	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1089	HV *hv;	1363	HV *hv;
1090	int i;	1364	int i;
1091		1365
1092	Newz (0, coro, 1, struct coro);	1366	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1367	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;	1368	coro->save = CORO_SAVE_DEF;
1095	coro->flags = CF_NEW;	1369	coro->flags = CF_NEW;
1096		1370
		1371	if (coro_first) coro_first->prev = coro;
		1372	coro->next = coro_first;
		1373	coro_first = coro;
		1374
1097	hv = newHV ();	1375	coro->hv = hv = newHV ();
1098	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1376	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1100		1378
1101	for (i = 1; i < items; i++)	1379	for (i = 1; i < items; i++)
1102	av_push (coro->args, newSVsv (ST (i)));	1380	av_push (coro->args, newSVsv (ST (i)));
…		…
1109	CODE:	1387	CODE:
1110	RETVAL = api_save (coro, new_save);	1388	RETVAL = api_save (coro, new_save);
1111	OUTPUT:	1389	OUTPUT:
1112	RETVAL	1390	RETVAL
1113		1391
		1392	int
		1393	save_also (SV *coro_sv, int save_also)
		1394	CODE:
		1395	{
		1396	struct coro *coro = SvSTATE (coro_sv);
		1397	RETVAL = coro->save;
		1398	coro->save \|= save_also;
		1399	}
		1400	OUTPUT:
		1401	RETVAL
		1402
1114	void	1403	void
1115	_set_stacklevel (...)	1404	_set_stacklevel (...)
1116	ALIAS:	1405	ALIAS:
1117	Coro::State::transfer = 1	1406	Coro::State::transfer = 1
1118	Coro::schedule = 2	1407	Coro::schedule = 2
1119	Coro::cede = 3	1408	Coro::cede = 3
		1409	Coro::cede_notself = 4
1120	CODE:	1410	CODE:
1121	{	1411	{
1122	struct transfer_args ta;	1412	struct transfer_args ta;
1123		1413
1124	switch (ix)	1414	switch (ix)
…		…
1130		1420
1131	case 1:	1421	case 1:
1132	if (items != 2)	1422	if (items != 2)
1133	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1423	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1134		1424
1135	prepare_transfer (&ta, ST (0), ST (1));	1425	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1426	break;
1137		1427
1138	case 2:	1428	case 2:
1139	prepare_schedule (&ta);	1429	prepare_schedule (aTHX_ &ta);
1140	break;	1430	break;
1141		1431
1142	case 3:	1432	case 3:
1143	prepare_cede (&ta);	1433	prepare_cede (aTHX_ &ta);
		1434	break;
		1435
		1436	case 4:
		1437	if (!prepare_cede_notself (aTHX_ &ta))
		1438	XSRETURN_EMPTY;
		1439
1144	break;	1440	break;
1145	}	1441	}
1146		1442
		1443	BARRIER;
1147	TRANSFER (ta);	1444	TRANSFER (ta);
1148	}
1149		1445
1150	void	1446	if (GIMME_V != G_VOID && ta.next != ta.prev)
1151	_clone_state_from (SV dst, SV src)	1447	XSRETURN_YES;
		1448	}
		1449
		1450	bool
		1451	_destroy (SV *coro_sv)
1152	CODE:	1452	CODE:
1153	{	1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1154	struct coro *coro_src = SvSTATE (src);	1454	OUTPUT:
1155		1455	RETVAL
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1160	}
1161		1456
1162	void	1457	void
1163	_exit (code)	1458	_exit (code)
1164	int code	1459	int code
1165	PROTOTYPE: $	1460	PROTOTYPE: $
1166	CODE:	1461	CODE:
1167	_exit (code);	1462	_exit (code);
1168		1463
1169	int	1464	int
		1465	cctx_stacksize (int new_stacksize = 0)
		1466	CODE:
		1467	RETVAL = coro_stacksize;
		1468	if (new_stacksize)
		1469	coro_stacksize = new_stacksize;
		1470	OUTPUT:
		1471	RETVAL
		1472
		1473	int
1170	cctx_count ()	1474	cctx_count ()
1171	CODE:	1475	CODE:
1172	RETVAL = cctx_count;	1476	RETVAL = cctx_count;
1173	OUTPUT:	1477	OUTPUT:
1174	RETVAL	1478	RETVAL
…		…
1178	CODE:	1482	CODE:
1179	RETVAL = cctx_idle;	1483	RETVAL = cctx_idle;
1180	OUTPUT:	1484	OUTPUT:
1181	RETVAL	1485	RETVAL
1182		1486
		1487	void
		1488	list ()
		1489	PPCODE:
		1490	{
		1491	struct coro *coro;
		1492	for (coro = coro_first; coro; coro = coro->next)
		1493	if (coro->hv)
		1494	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1495	}
		1496
		1497	void
		1498	call (Coro::State coro, SV *coderef)
		1499	ALIAS:
		1500	eval = 1
		1501	CODE:
		1502	{
		1503	if (coro->mainstack)
		1504	{
		1505	struct coro temp;
		1506	Zero (&temp, 1, struct coro);
		1507	temp.save = CORO_SAVE_ALL;
		1508
		1509	if (!(coro->flags & CF_RUNNING))
		1510	{
		1511	save_perl (aTHX_ &temp);
		1512	load_perl (aTHX_ coro);
		1513	}
		1514
		1515	{
		1516	dSP;
		1517	ENTER;
		1518	SAVETMPS;
		1519	PUSHMARK (SP);
		1520	PUTBACK;
		1521	if (ix)
		1522	eval_sv (coderef, 0);
		1523	else
		1524	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1525	SPAGAIN;
		1526	FREETMPS;
		1527	LEAVE;
		1528	PUTBACK;
		1529	}
		1530
		1531	if (!(coro->flags & CF_RUNNING))
		1532	{
		1533	save_perl (aTHX_ coro);
		1534	load_perl (aTHX_ &temp);
		1535	}
		1536	}
		1537	}
		1538
		1539	SV *
		1540	is_ready (Coro::State coro)
		1541	PROTOTYPE: $
		1542	ALIAS:
		1543	is_ready = CF_READY
		1544	is_running = CF_RUNNING
		1545	is_new = CF_NEW
		1546	is_destroyed = CF_DESTROYED
		1547	CODE:
		1548	RETVAL = boolSV (coro->flags & ix);
		1549	OUTPUT:
		1550	RETVAL
		1551
		1552	void
		1553	trace (Coro::State coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1554	CODE:
		1555	if (flags & CC_TRACE)
		1556	{
		1557	if (!coro->cctx)
		1558	coro->cctx = cctx_new ();
		1559	else if (!(coro->cctx->flags & CC_TRACE))
		1560	croak ("cannot enable tracing on coroutine with custom stack");
		1561
		1562	coro->cctx->flags \|= flags & (CC_TRACE \| CC_TRACE_ALL);
		1563	}
		1564	else
		1565	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1566	{
		1567	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1568	coro->cctx->flags \|= CC_NOREUSE;
		1569	}
		1570
		1571	SV *
		1572	has_stack (Coro::State coro)
		1573	PROTOTYPE: $
		1574	CODE:
		1575	RETVAL = boolSV (!!coro->cctx);
		1576	OUTPUT:
		1577	RETVAL
		1578
		1579	int
		1580	is_traced (Coro::State coro)
		1581	PROTOTYPE: $
		1582	CODE:
		1583	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	IV
		1588	rss (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = coro_rss (coro);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595
1183	MODULE = Coro::State PACKAGE = Coro	1596	MODULE = Coro::State PACKAGE = Coro
1184		1597
1185	BOOT:	1598	BOOT:
1186	{	1599	{
1187	int i;	1600	int i;
		1601
		1602	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1603	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1604	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1605
		1606	coro_current = get_sv ("Coro::current", FALSE);
		1607	SvREADONLY_on (coro_current);
1188		1608
1189	coro_stash = gv_stashpv ("Coro", TRUE);	1609	coro_stash = gv_stashpv ("Coro", TRUE);
1190		1610
1191	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1611	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1192	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1612	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1193	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1613	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1194	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1614	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1195	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1615	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1196	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1616	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1197		1617
1198	coro_current = get_sv ("Coro::current", FALSE);
1199	SvREADONLY_on (coro_current);
1200
1201	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1618	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1202	coro_ready[i] = newAV ();	1619	coro_ready[i] = newAV ();
1203		1620
1204	{	1621	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1622	SV *sv = perl_get_sv("Coro::API", 1);
1206		1623
1207	coroapi.schedule = api_schedule;	1624	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;	1625	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1626	coroapi.cede = api_cede;
		1627	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1628	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1629	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1630	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1631	coroapi.current = coro_current;
1214		1632
1215	GCoroAPI = &coroapi;	1633	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1634	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1635	SvREADONLY_on (sv);
1218	}	1636	}
…		…
1234	RETVAL = coro->prio;	1652	RETVAL = coro->prio;
1235		1653
1236	if (items > 1)	1654	if (items > 1)
1237	{	1655	{
1238	if (ix)	1656	if (ix)
1239	newprio += coro->prio;	1657	newprio = coro->prio - newprio;
1240		1658
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1659	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1660	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1661
1244	coro->prio = newprio;	1662	coro->prio = newprio;
1245	}	1663	}
1246	}	1664	}
		1665	OUTPUT:
		1666	RETVAL
1247		1667
1248	SV *	1668	SV *
1249	ready (SV *self)	1669	ready (SV *self)
1250	PROTOTYPE: $	1670	PROTOTYPE: $
1251	CODE:	1671	CODE:
1252	RETVAL = boolSV (api_ready (self));	1672	RETVAL = boolSV (api_ready (self));
1253	OUTPUT:	1673	OUTPUT:
1254	RETVAL	1674	RETVAL
1255		1675
1256	SV *
1257	is_ready (SV *self)
1258	PROTOTYPE: $
1259	CODE:
1260	RETVAL = boolSV (api_is_ready (self));
1261	OUTPUT:
1262	RETVAL
1263
1264	int	1676	int
1265	nready (...)	1677	nready (...)
1266	PROTOTYPE:	1678	PROTOTYPE:
1267	CODE:	1679	CODE:
1268	RETVAL = coro_nready;	1680	RETVAL = coro_nready;
1269	OUTPUT:	1681	OUTPUT:
1270	RETVAL	1682	RETVAL
1271		1683
		1684	# for async_pool speedup
		1685	void
		1686	_pool_1 (SV *cb)
		1687	CODE:
		1688	{
		1689	int i, len;
		1690	HV hv = (HV )SvRV (coro_current);
		1691	AV *defav = GvAV (PL_defgv);
		1692	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1693	AV *invoke_av;
		1694
		1695	if (!invoke)
		1696	croak ("\3terminate\2\n");
		1697
		1698	hv_store (hv, "desc", sizeof ("desc") - 1,
		1699	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1700
		1701	invoke_av = (AV *)SvRV (invoke);
		1702	len = av_len (invoke_av);
		1703
		1704	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1705
		1706	if (len > 0)
		1707	{
		1708	av_fill (defav, len - 1);
		1709	for (i = 0; i < len; ++i)
		1710	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1711	}
		1712
		1713	SvREFCNT_dec (invoke);
		1714	}
		1715
		1716	void
		1717	_pool_2 (SV *cb)
		1718	CODE:
		1719	{
		1720	struct coro *coro = SvSTATE (coro_current);
		1721
		1722	sv_setsv (cb, &PL_sv_undef);
		1723
		1724	if (coro_rss (coro) > SvIV (sv_pool_rss)
		1725	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1726	croak ("\3terminate\2\n");
		1727
		1728	av_clear (GvAV (PL_defgv));
		1729	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1730	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1731	coro->save = CORO_SAVE_DEF;
		1732	coro->prio = 0;
		1733	av_push (av_async_pool, newSVsv (coro_current));
		1734	}
		1735
		1736
1272	MODULE = Coro::State PACKAGE = Coro::AIO	1737	MODULE = Coro::State PACKAGE = Coro::AIO
1273		1738
1274	SV *	1739	SV *
1275	_get_state ()	1740	_get_state ()
1276	CODE:	1741	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs. Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.167 by root, Thu Sep 27 15:52:31 2007 UTC