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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 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	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	11	#include <stdio.h>
49	#include <errno.h>	12	#include <errno.h>
50	#include <assert.h>	13	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		14
60	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
61	# include <unistd.h>	16	# include <unistd.h>
62	# include <sys/mman.h>	17	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
…		…
78	#else	33	#else
79	# define PAGESIZE 0	34	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
81	#endif	36	#endif
82		37
83	/* The next macro should declare a variable stacklevel that contains and approximation	38	#if CORO_USE_VALGRIND
84	* to the current C stack pointer. Its property is that it changes with each call	39	# include <valgrind/valgrind.h>
85	* 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. */
86	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
88		97
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		99
91	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	101	# define attribute(x) __attribute__(x)
		102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	103	#else
94	# define attribute(x)	104	# define attribute(x)
		105	# define BARRIER
95	#endif	106	#endif
96		107
97	#define NOINLINE attribute ((noinline))	108	#define NOINLINE attribute ((noinline))
98		109
99	#include "CoroAPI.h"	110	#include "CoroAPI.h"
…		…
105	#else	116	#else
106	# define LOCK (void)0	117	# define LOCK (void)0
107	# define UNLOCK (void)0	118	# define UNLOCK (void)0
108	#endif	119	#endif
109		120
		121	/* helper storage struct for Coro::AIO */
110	struct io_state	122	struct io_state
111	{	123	{
112	int errorno;	124	int errorno;
113	I32 laststype;	125	I32 laststype;
114	int laststatval;	126	int laststatval;
115	Stat_t statcache;	127	Stat_t statcache;
116	};	128	};
117		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
118	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
119	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;
120	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
121	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
122		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
123	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
124	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	};
125		153
126	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
127	typedef struct coro_cctx {	155	typedef struct coro_cctx {
128	struct coro_cctx *next;	156	struct coro_cctx *next;
129		157
130	/* the stack */	158	/* the stack */
131	void *sptr;	159	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
133		161
134	/* cpu state */	162	/* cpu state */
135	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 */
136	JMPENV *top_env;	165	JMPENV *top_env;
137	coro_context cctx;	166	coro_context cctx;
138		167
139	int inuse;
140
141	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
142	int valgrind_id;	169	int valgrind_id;
143	#endif	170	#endif
		171	unsigned char flags;
144	} coro_cctx;	172	} coro_cctx;
145		173
146	enum {	174	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
149	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 */
150	};	179	};
151		180
152	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
153	struct coro {	182	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
162		191
163	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
164	AV *defav; /* @_ */	193	AV *defav; /* @_ */
165	SV *defsv; /* $_ */	194	SV *defsv; /* $_ */
166	SV *errsv; /* $@ */	195	SV *errsv; /* $@ */
		196	GV *deffh; /* default filehandle */
167	SV *irssv; /* $/ */	197	SV *irssv; /* $/ */
168	SV *irssv_sv; /* real $/ cache */	198	SV *irssv_sv; /* real $/ cache */
169		199
170	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
171	# include "state.h"	201	# include "state.h"
172	#undef VAR	202	#undef VAR
173		203
174	/* coro process data */	204	/* coro process data */
175	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 */
176	};	210	};
177		211
178	typedef struct coro *Coro__State;	212	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	213	typedef struct coro *Coro__State_or_hashref;
180		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
181	static AV *	232	static AV *
182	coro_clone_padlist (CV *cv)	233	coro_clone_padlist (pTHX_ CV *cv)
183	{	234	{
184	AV *padlist = CvPADLIST (cv);	235	AV *padlist = CvPADLIST (cv);
185	AV *newpadlist, *newpad;	236	AV *newpadlist, *newpad;
186		237
187	newpadlist = newAV ();	238	newpadlist = newAV ();
…		…
199		250
200	return newpadlist;	251	return newpadlist;
201	}	252	}
202		253
203	static void	254	static void
204	free_padlist (AV *padlist)	255	free_padlist (pTHX_ AV *padlist)
205	{	256	{
206	/* may be during global destruction */	257	/* may be during global destruction */
207	if (SvREFCNT (padlist))	258	if (SvREFCNT (padlist))
208	{	259	{
209	I32 i = AvFILLp (padlist);	260	I32 i = AvFILLp (padlist);
…		…
230	AV *padlist;	281	AV *padlist;
231	AV *av = (AV *)mg->mg_obj;	282	AV *av = (AV *)mg->mg_obj;
232		283
233	/* casting is fun. */	284	/* casting is fun. */
234	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	285	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235	free_padlist (padlist);	286	free_padlist (aTHX_ padlist);
236		287
237	SvREFCNT_dec (av);	288	SvREFCNT_dec (av);
238		289
239	return 0;	290	return 0;
240	}	291	}
…		…
250	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	301	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
251	: 0	302	: 0
252		303
253	/* the next two functions merely cache the padlists */	304	/* the next two functions merely cache the padlists */
254	static void	305	static void
255	get_padlist (CV *cv)	306	get_padlist (pTHX_ CV *cv)
256	{	307	{
257	MAGIC *mg = CORO_MAGIC (cv);	308	MAGIC *mg = CORO_MAGIC (cv);
258	AV *av;	309	AV *av;
259		310
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	311	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	312	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	313	else
263	{	314	{
264	#if 0	315	#if CORO_PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	316	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	317	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	318	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	319	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	320	SvREFCNT_dec (cp);
270	#else	321	#else
271	CvPADLIST (cv) = coro_clone_padlist (cv);	322	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272	#endif	323	#endif
273	}	324	}
274	}	325	}
275		326
276	static void	327	static void
277	put_padlist (CV *cv)	328	put_padlist (pTHX_ CV *cv)
278	{	329	{
279	MAGIC *mg = CORO_MAGIC (cv);	330	MAGIC *mg = CORO_MAGIC (cv);
280	AV *av;	331	AV *av;
281		332
282	if (!mg)	333	if (!mg)
…		…
293	av_extend (av, AvMAX (av) + 1);	344	av_extend (av, AvMAX (av) + 1);
294		345
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	346	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	347	}
297		348
		349	/** load & save, init *******************************************************/
		350
298	#define SB do {	351	#define SB do {
299	#define SE } while (0)	352	#define SE } while (0)
300		353
301	#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
302		355
303	static void	356	static void
304	load_perl (Coro__State c)	357	load_perl (pTHX_ Coro__State c)
305	{	358	{
306	#define VAR(name,type) PL_ ## name = c->name;	359	#define VAR(name,type) PL_ ## name = c->name;
307	# include "state.h"	360	# include "state.h"
308	#undef VAR	361	#undef VAR
309		362
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	363	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	364	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	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
313	if (c->irssv)	368	if (c->irssv)
314	{	369	{
315	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	370	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		371	{
316	SvREFCNT_dec (c->irssv);	372	SvREFCNT_dec (c->irssv);
		373	c->irssv = 0;
		374	}
317	else	375	else
318	{	376	{
319	REPLACE_SV (PL_rs, c->irssv);	377	REPLACE_SV (PL_rs, c->irssv);
320	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	378	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321	sv_setsv (c->irssv_sv, PL_rs);	379	sv_setsv (c->irssv_sv, PL_rs);
…		…
327	CV *cv;	385	CV *cv;
328		386
329	/* now do the ugly restore mess */	387	/* now do the ugly restore mess */
330	while ((cv = (CV *)POPs))	388	while ((cv = (CV *)POPs))
331	{	389	{
332	put_padlist (cv); /* mark this padlist as available */	390	put_padlist (aTHX_ cv); /* mark this padlist as available */
333	CvDEPTH (cv) = PTR2IV (POPs);	391	CvDEPTH (cv) = PTR2IV (POPs);
334	CvPADLIST (cv) = (AV *)POPs;	392	CvPADLIST (cv) = (AV *)POPs;
335	}	393	}
336		394
337	PUTBACK;	395	PUTBACK;
338	}	396	}
339	}	397	}
340		398
341	static void	399	static void
342	save_perl (Coro__State c)	400	save_perl (pTHX_ Coro__State c)
343	{	401	{
344	{	402	{
345	dSP;	403	dSP;
346	I32 cxix = cxstack_ix;	404	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	405	PERL_CONTEXT *ccstk = cxstack;
…		…
350	/*	408	/*
351	* 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
352	* (and reinitialize) all cv's in the whole callchain :(	410	* (and reinitialize) all cv's in the whole callchain :(
353	*/	411	*/
354		412
355	PUSHs (Nullsv);	413	XPUSHs (Nullsv);
356	/* this loop was inspired by pp_caller */	414	/* this loop was inspired by pp_caller */
357	for (;;)	415	for (;;)
358	{	416	{
359	while (cxix >= 0)	417	while (cxix >= 0)
360	{	418	{
361	PERL_CONTEXT *cx = &ccstk[cxix--];	419	PERL_CONTEXT *cx = &ccstk[cxix--];
362		420
363	if (CxTYPE (cx) == CXt_SUB)	421	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
364	{	422	{
365	CV *cv = cx->blk_sub.cv;	423	CV *cv = cx->blk_sub.cv;
366		424
367	if (CvDEPTH (cv))	425	if (CvDEPTH (cv))
368	{	426	{
369	EXTEND (SP, 3);	427	EXTEND (SP, 3);
370
371	PUSHs ((SV *)CvPADLIST (cv));	428	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	429	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	430	PUSHs ((SV *)cv);
374		431
375	CvDEPTH (cv) = 0;	432	CvDEPTH (cv) = 0;
376	get_padlist (cv);	433	get_padlist (aTHX_ cv);
377	}	434	}
378	}	435	}
379	#ifdef CXt_FORMAT
380	else if (CxTYPE (cx) == CXt_FORMAT)
381	{
382	/* I never used formats, so how should I know how these are implemented? */
383	/* my bold guess is as a simple, plain sub... */
384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385	}
386	#endif
387	}	436	}
388		437
389	if (top_si->si_type == PERLSI_MAIN)	438	if (top_si->si_type == PERLSI_MAIN)
390	break;	439	break;
391		440
392	top_si = top_si->si_prev;	441	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	442	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	443	cxix = top_si->si_cxix;
395	}	444	}
396		445
397	PUTBACK;	446	PUTBACK;
398	}	447	}
399		448
400	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;
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	450	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	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;
403	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;
404		454
405	#define VAR(name,type)c->name = PL_ ## name;	455	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	456	# include "state.h"
407	#undef VAR	457	#undef VAR
…		…
411	* allocate various perl stacks. This is an exact copy	461	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	462	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	463	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	464	* not usually need a lot of stackspace.
415	*/	465	*/
		466	#if CORO_PREFER_PERL_FUNCTIONS
		467	# define coro_init_stacks init_stacks
		468	#else
416	static void	469	static void
417	coro_init_stacks ()	470	coro_init_stacks (pTHX)
418	{	471	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	472	PL_curstackinfo = new_stackinfo(64, 6);
420	PL_curstackinfo->si_type = PERLSI_MAIN;	473	PL_curstackinfo->si_type = PERLSI_MAIN;
421	PL_curstack = PL_curstackinfo->si_stack;	474	PL_curstack = PL_curstackinfo->si_stack;
422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	475	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423		476
424	PL_stack_base = AvARRAY(PL_curstack);	477	PL_stack_base = AvARRAY(PL_curstack);
425	PL_stack_sp = PL_stack_base;	478	PL_stack_sp = PL_stack_base;
426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	479	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427		480
428	New(50,PL_tmps_stack,128,SV*);	481	New(50,PL_tmps_stack,64,SV*);
429	PL_tmps_floor = -1;	482	PL_tmps_floor = -1;
430	PL_tmps_ix = -1;	483	PL_tmps_ix = -1;
431	PL_tmps_max = 128;	484	PL_tmps_max = 64;
432		485
433	New(54,PL_markstack,32,I32);	486	New(54,PL_markstack,16,I32);
434	PL_markstack_ptr = PL_markstack;	487	PL_markstack_ptr = PL_markstack;
435	PL_markstack_max = PL_markstack + 32;	488	PL_markstack_max = PL_markstack + 16;
436		489
437	#ifdef SET_MARK_OFFSET	490	#ifdef SET_MARK_OFFSET
438	SET_MARK_OFFSET;	491	SET_MARK_OFFSET;
439	#endif	492	#endif
440		493
441	New(54,PL_scopestack,32,I32);	494	New(54,PL_scopestack,16,I32);
442	PL_scopestack_ix = 0;	495	PL_scopestack_ix = 0;
443	PL_scopestack_max = 32;	496	PL_scopestack_max = 16;
444		497
445	New(54,PL_savestack,64,ANY);	498	New(54,PL_savestack,64,ANY);
446	PL_savestack_ix = 0;	499	PL_savestack_ix = 0;
447	PL_savestack_max = 64;	500	PL_savestack_max = 64;
448		501
449	#if !PERL_VERSION_ATLEAST (5,9,0)	502	#if !PERL_VERSION_ATLEAST (5,9,0)
450	New(54,PL_retstack,16,OP*);	503	New(54,PL_retstack,4,OP*);
451	PL_retstack_ix = 0;	504	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	505	PL_retstack_max = 4;
453	#endif	506	#endif
454	}	507	}
		508	#endif
455		509
456	/*	510	/*
457	* destroy the stacks, the callchain etc...	511	* destroy the stacks, the callchain etc...
458	*/	512	*/
459	static void	513	static void
460	coro_destroy_stacks ()	514	coro_destroy_stacks (pTHX)
461	{	515	{
462	if (!IN_DESTRUCT)	516	if (!IN_DESTRUCT)
463	{	517	{
464	/* is this ugly, I ask? */	518	/* restore all saved variables and stuff */
465	LEAVE_SCOPE (0);	519	LEAVE_SCOPE (0);
		520	assert (PL_tmps_floor == -1);
466		521
467	/* sure it is, but more important: is it correct?? :/ */	522	/* free all temporaries */
468	FREETMPS;	523	FREETMPS;
		524	assert (PL_tmps_ix == -1);
469		525
		526	/* unwind all extra stacks */
470	/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/	527	POPSTACK_TO (PL_mainstack);
		528
		529	/* unwind main stack */
		530	dounwind (-1);
471	}	531	}
472		532
473	while (PL_curstackinfo->si_next)	533	while (PL_curstackinfo->si_next)
474	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
475		535
476	while (PL_curstackinfo)	536	while (PL_curstackinfo)
477	{	537	{
478	PERL_SI *p = PL_curstackinfo->si_prev;	538	PERL_SI *p = PL_curstackinfo->si_prev;
479		539
480	{ /*D*//*remove*/
481	dSP;
482	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
483	PUTBACK; /* possibly superfluous */
484	}
485
486	if (!IN_DESTRUCT)	540	if (!IN_DESTRUCT)
487	{
488	dounwind (-1);/*D*//*remove*/
489	SvREFCNT_dec (PL_curstackinfo->si_stack);	541	SvREFCNT_dec (PL_curstackinfo->si_stack);
490	}
491		542
492	Safefree (PL_curstackinfo->si_cxstack);	543	Safefree (PL_curstackinfo->si_cxstack);
493	Safefree (PL_curstackinfo);	544	Safefree (PL_curstackinfo);
494	PL_curstackinfo = p;	545	PL_curstackinfo = p;
495	}	546	}
…		…
501	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
502	Safefree (PL_retstack);	553	Safefree (PL_retstack);
503	#endif	554	#endif
504	}	555	}
505		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
506	static void	590	static void
507	setup_coro (struct coro *coro)	591	setup_coro (pTHX_ struct coro *coro)
508	{	592	{
509	/*	593	/*
510	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
511	*/	595	*/
512
513	coro_init_stacks ();	596	coro_init_stacks (aTHX);
514		597
515	PL_curcop = &PL_compiling;	598	PL_curcop = &PL_compiling;
516	PL_in_eval = EVAL_NULL;	599	PL_in_eval = EVAL_NULL;
		600	PL_comppad = 0;
517	PL_curpm = 0;	601	PL_curpm = 0;
518	PL_localizing = 0;	602	PL_localizing = 0;
519	PL_dirty = 0;	603	PL_dirty = 0;
520	PL_restartop = 0;	604	PL_restartop = 0;
521		605
…		…
529	Zero (&myop, 1, LOGOP);	613	Zero (&myop, 1, LOGOP);
530	myop.op_next = Nullop;	614	myop.op_next = Nullop;
531	myop.op_flags = OPf_WANT_VOID;	615	myop.op_flags = OPf_WANT_VOID;
532		616
533	PUSHMARK (SP);	617	PUSHMARK (SP);
534	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	618	XPUSHs (av_shift (GvAV (PL_defgv)));
535	PUTBACK;	619	PUTBACK;
536	PL_op = (OP *)&myop;	620	PL_op = (OP *)&myop;
537	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	621	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
538	SPAGAIN;	622	SPAGAIN;
539	}	623	}
540		624
541	ENTER; /* necessary e.g. for dounwind */	625	ENTER; /* necessary e.g. for dounwind */
542	}	626	}
543		627
544	static void	628	static void
545	free_coro_mortal ()	629	free_coro_mortal (pTHX)
546	{	630	{
547	if (coro_mortal)	631	if (coro_mortal)
548	{	632	{
549	SvREFCNT_dec (coro_mortal);	633	SvREFCNT_dec (coro_mortal);
550	coro_mortal = 0;	634	coro_mortal = 0;
551	}	635	}
552	}	636	}
553		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
554	/* 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 */
555	static void NOINLINE	745	static void NOINLINE
556	prepare_cctx (coro_cctx *cctx)	746	prepare_cctx (pTHX_ coro_cctx *cctx)
557	{	747	{
558	dSP;	748	dSP;
559	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;
560		755
561	Zero (&myop, 1, LOGOP);	756	Zero (&myop, 1, LOGOP);
562	myop.op_next = PL_op;	757	myop.op_next = PL_op;
563	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	758	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
564		759
…		…
570	PL_op = (OP *)&myop;	765	PL_op = (OP *)&myop;
571	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	766	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
572	SPAGAIN;	767	SPAGAIN;
573	}	768	}
574		769
		770	/*
		771	* this is a _very_ stripped down perl interpreter ;)
		772	*/
575	static void	773	static void
576	coro_run (void *arg)	774	coro_run (void *arg)
577	{	775	{
		776	dTHX;
		777
578	/* coro_run is the alternative tail of transfer(), so unlock here. */	778	/* coro_run is the alternative tail of transfer(), so unlock here. */
579	UNLOCK;	779	UNLOCK;
580		780
581	/*	781	/* we now skip the entersub that lead to transfer() */
582	* this is a _very_ stripped down perl interpreter ;)	782	PL_op = PL_op->op_next;
583	*/
584	PL_top_env = &PL_start_env;
585		783
586	/* inject call to cctx_init */	784	/* inject a fake subroutine call to cctx_init */
587	prepare_cctx ((coro_cctx *)arg);	785	prepare_cctx (aTHX_ (coro_cctx *)arg);
588		786
589	/* 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 */
590	PL_restartop = PL_op;	788	PL_restartop = PL_op;
591	perl_run (PL_curinterp);	789	perl_run (PL_curinterp);
592		790
593	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	791	/*
594	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 */
595	}	800	}
596		801
597	static coro_cctx *	802	static coro_cctx *
598	cctx_new ()	803	cctx_new ()
599	{	804	{
600	coro_cctx *cctx;	805	coro_cctx *cctx;
		806	void *stack_start;
		807	size_t stack_size;
601		808
602	++cctx_count;	809	++cctx_count;
603		810
604	Newz (0, cctx, 1, coro_cctx);	811	Newz (0, cctx, 1, coro_cctx);
605		812
606	#if HAVE_MMAP	813	#if HAVE_MMAP
607		814
608	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	815	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
609	/* mmap supposedly does allocate-on-write for us */	816	/* mmap supposedly does allocate-on-write for us */
610	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);
611		818
612	if (cctx->sptr == (void *)-1)	819	if (cctx->sptr != (void *)-1)
613	{
614	perror ("FATAL: unable to mmap stack for coroutine");
615	_exit (EXIT_FAILURE);
616	}	820	{
617
618	# if STACKGUARD	821	# if CORO_STACKGUARD
619	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	822	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
620	# 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);
621		833
622	#else
623
624	cctx->ssize = STACKSIZE * (long)sizeof (long);
625	New (0, cctx->sptr, STACKSIZE, long);
626
627	if (!cctx->sptr)	834	if (!cctx->sptr)
628	{	835	{
629	perror ("FATAL: unable to malloc stack for coroutine");	836	perror ("FATAL: unable to allocate stack for coroutine");
630	_exit (EXIT_FAILURE);	837	_exit (EXIT_FAILURE);
631	}	838	}
632		839
633	#endif	840	stack_start = cctx->sptr;
		841	stack_size = cctx->ssize;
		842	}
634		843
635	#if USE_VALGRIND	844	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
636	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
637	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
638	cctx->ssize + (char *)cctx->sptr
639	);
640	#endif
641
642	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);
643		846
644	return cctx;	847	return cctx;
645	}	848	}
646		849
647	static void	850	static void
…		…
650	if (!cctx)	853	if (!cctx)
651	return;	854	return;
652		855
653	--cctx_count;	856	--cctx_count;
654		857
655	#if USE_VALGRIND	858	#if CORO_USE_VALGRIND
656	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	859	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
657	#endif	860	#endif
658		861
659	#if HAVE_MMAP	862	#if HAVE_MMAP
		863	if (cctx->flags & CC_MAPPED)
660	munmap (cctx->sptr, cctx->ssize);	864	munmap (cctx->sptr, cctx->ssize);
661	#else	865	else
		866	#endif
662	Safefree (cctx->sptr);	867	Safefree (cctx->sptr);
663	#endif
664		868
665	Safefree (cctx);	869	Safefree (cctx);
666	}	870	}
667		871
668	static coro_cctx *	872	static coro_cctx *
669	cctx_get ()	873	cctx_get (pTHX)
670	{	874	{
671	coro_cctx *cctx;
672
673	if (cctx_first)	875	while (cctx_first)
674	{	876	{
675	cctx = cctx_first;	877	coro_cctx *cctx = cctx_first;
676	cctx_first = cctx->next;	878	cctx_first = cctx->next;
677	--cctx_idle;	879	--cctx_idle;
678	}	880
679	else	881	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
680	{	882	return cctx;
681	cctx = cctx_new ();	883
682	PL_op = PL_op->op_next;	884	cctx_destroy (cctx);
683	}	885	}
684		886
685	return cctx;	887	return cctx_new ();
686	}	888	}
687		889
688	static void	890	static void
689	cctx_put (coro_cctx *cctx)	891	cctx_put (coro_cctx *cctx)
690	{	892	{
…		…
693	{	895	{
694	coro_cctx *first = cctx_first;	896	coro_cctx *first = cctx_first;
695	cctx_first = first->next;	897	cctx_first = first->next;
696	--cctx_idle;	898	--cctx_idle;
697		899
698	assert (!first->inuse);
699	cctx_destroy (first);	900	cctx_destroy (first);
700	}	901	}
701		902
702	++cctx_idle;	903	++cctx_idle;
703	cctx->next = cctx_first;	904	cctx->next = cctx_first;
704	cctx_first = cctx;	905	cctx_first = cctx;
705	}	906	}
706		907
		908	/** coroutine switching *****************************************************/
		909
707	/* never call directly, always through the coro_state_transfer global variable */	910	/* never call directly, always through the coro_state_transfer global variable */
708	static void NOINLINE	911	static void NOINLINE
709	transfer (struct coro *prev, struct coro *next)	912	transfer (pTHX_ struct coro *prev, struct coro *next)
710	{	913	{
711	dSTACKLEVEL;	914	dSTACKLEVEL;
712		915
713	/* sometimes transfer is only called to set idle_sp */	916	/* sometimes transfer is only called to set idle_sp */
714	if (!next)	917	if (!next)
715	{	918	{
716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	919	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
717	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 */
718	}	921	}
719	else if (prev != next)	922	else if (prev != next)
720	{	923	{
721	coro_cctx *prev__cctx;	924	coro_cctx *prev__cctx;
722		925
723	if (prev->flags & CF_NEW)	926	if (prev->flags & CF_NEW)
724	{	927	{
725	/* create a new empty context */	928	/* create a new empty context */
726	Newz (0, prev->cctx, 1, coro_cctx);	929	Newz (0, prev->cctx, 1, coro_cctx);
727	prev->cctx->inuse = 1;
728	prev->flags &= ~CF_NEW;	930	prev->flags &= ~CF_NEW;
729	prev->flags |= CF_RUNNING;	931	prev->flags |= CF_RUNNING;
730	}	932	}
731		933
732	/*TODO: must not croak here */	934	/*TODO: must not croak here */
733	if (!prev->flags & CF_RUNNING)	935	if (!prev->flags & CF_RUNNING)
734	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");
735		937
736	if (next->flags & CF_RUNNING)	938	if (next->flags & CF_RUNNING)
737	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");
738		943
739	prev->flags &= ~CF_RUNNING;	944	prev->flags &= ~CF_RUNNING;
740	next->flags |= CF_RUNNING;	945	next->flags |= CF_RUNNING;
741		946
742	LOCK;	947	LOCK;
…		…
744	if (next->flags & CF_NEW)	949	if (next->flags & CF_NEW)
745	{	950	{
746	/* need to start coroutine */	951	/* need to start coroutine */
747	next->flags &= ~CF_NEW;	952	next->flags &= ~CF_NEW;
748	/* first get rid of the old state */	953	/* first get rid of the old state */
749	save_perl (prev);	954	save_perl (aTHX_ prev);
750	/* setup coroutine call */	955	/* setup coroutine call */
751	setup_coro (next);	956	setup_coro (aTHX_ next);
752	/* need a new stack */
753	assert (!next->cctx);
754	}	957	}
755	else	958	else
756	{	959	{
757	/* coroutine already started */	960	/* coroutine already started */
758	save_perl (prev);	961	save_perl (aTHX_ prev);
759	load_perl (next);	962	load_perl (aTHX_ next);
760	}	963	}
761		964
762	prev__cctx = prev->cctx;	965	prev__cctx = prev->cctx;
763		966
764	/* possibly "free" the cctx */	967	/* possibly "free" the cctx */
765	if (prev__cctx->idle_sp == STACKLEVEL)	968	if (prev__cctx->idle_sp == STACKLEVEL)
766	{	969	{
767	/* 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 */
768	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));
769		972
770	prev->cctx = 0;	973	prev->cctx = 0;
771		974
772	cctx_put (prev__cctx);	975	cctx_put (prev__cctx);
773	prev__cctx->inuse = 0;
774	}	976	}
775		977
776	if (!next->cctx)	978	if (!next->cctx)
777	{
778	next->cctx = cctx_get ();	979	next->cctx = cctx_get (aTHX);
779	assert (!next->cctx->inuse);
780	next->cctx->inuse = 1;
781	}
782		980
783	if (prev__cctx != next->cctx)	981	if (prev__cctx != next->cctx)
784	{	982	{
785	prev__cctx->top_env = PL_top_env;	983	prev__cctx->top_env = PL_top_env;
786	PL_top_env = next->cctx->top_env;	984	PL_top_env = next->cctx->top_env;
787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	985	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
788	}	986	}
789		987
790	free_coro_mortal ();	988	free_coro_mortal (aTHX);
791
792	UNLOCK;	989	UNLOCK;
793	}	990	}
794	}	991	}
795		992
796	struct transfer_args	993	struct transfer_args
797	{	994	{
798	struct coro *prev, *next;	995	struct coro *prev, *next;
799	};	996	};
800		997
801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	998	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
802		999
		1000	/** high level stuff ********************************************************/
		1001
803	static void	1002	static int
804	coro_state_destroy (struct coro *coro)	1003	coro_state_destroy (pTHX_ struct coro *coro)
805	{	1004	{
806	if (coro->refcnt--)	1005	if (coro->flags & CF_DESTROYED)
807	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 */
808		1020
809	if (coro->mainstack && coro->mainstack != main_mainstack)	1021	if (coro->mainstack && coro->mainstack != main_mainstack)
810	{	1022	{
811	struct coro temp;	1023	struct coro temp;
		1024
		1025	assert (!(coro->flags & CF_RUNNING));
		1026
812	Zero (&temp, 1, struct coro);	1027	Zero (&temp, 1, struct coro);
813	temp.save = CORO_SAVE_ALL;	1028	temp.save = CORO_SAVE_ALL;
814		1029
815	if (coro->flags & CF_RUNNING)	1030	if (coro->flags & CF_RUNNING)
816	croak ("FATAL: tried to destroy currently running coroutine");	1031	croak ("FATAL: tried to destroy currently running coroutine");
817		1032
818	save_perl (&temp);	1033	save_perl (aTHX_ &temp);
819	load_perl (coro);	1034	load_perl (aTHX_ coro);
820		1035
821	coro_destroy_stacks ();	1036	coro_destroy_stacks (aTHX);
822		1037
823	load_perl (&temp); /* this will get rid of defsv etc.. */	1038	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
824		1039
825	coro->mainstack = 0;	1040	coro->mainstack = 0;
826	}	1041	}
827		1042
828	cctx_destroy (coro->cctx);	1043	cctx_destroy (coro->cctx);
829	SvREFCNT_dec (coro->args);	1044	SvREFCNT_dec (coro->args);
830	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;
831	}	1051	}
832		1052
833	static int	1053	static int
834	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1054	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
835	{	1055	{
836	struct coro *coro = (struct coro *)mg->mg_ptr;	1056	struct coro *coro = (struct coro *)mg->mg_ptr;
837	mg->mg_ptr = 0;	1057	mg->mg_ptr = 0;
838		1058
		1059	coro->hv = 0;
		1060
		1061	if (--coro->refcnt < 0)
		1062	{
839	coro_state_destroy (coro);	1063	coro_state_destroy (aTHX_ coro);
		1064	Safefree (coro);
		1065	}
840		1066
841	return 0;	1067	return 0;
842	}	1068	}
843		1069
844	static int	1070	static int
…		…
851	return 0;	1077	return 0;
852	}	1078	}
853		1079
854	static MGVTBL coro_state_vtbl = {	1080	static MGVTBL coro_state_vtbl = {
855	0, 0, 0, 0,	1081	0, 0, 0, 0,
856	coro_state_clear,	1082	coro_state_free,
857	0,	1083	0,
858	#ifdef MGf_DUP	1084	#ifdef MGf_DUP
859	coro_state_dup,	1085	coro_state_dup,
860	#else	1086	#else
861	# define MGf_DUP 0	1087	# define MGf_DUP 0
862	#endif	1088	#endif
863	};	1089	};
864		1090
865	static struct coro *	1091	static struct coro *
866	SvSTATE (SV *coro)	1092	SvSTATE_ (pTHX_ SV *coro)
867	{	1093	{
868	HV *stash;	1094	HV *stash;
869	MAGIC *mg;	1095	MAGIC *mg;
870		1096
871	if (SvROK (coro))	1097	if (SvROK (coro))
…		…
877	/* very slow, but rare, check */	1103	/* very slow, but rare, check */
878	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	1104	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
879	croak ("Coro::State object required");	1105	croak ("Coro::State object required");
880	}	1106	}
881		1107
882	mg = SvMAGIC (coro);	1108	mg = CORO_MAGIC (coro);
883	assert (mg->mg_type == PERL_MAGIC_ext);
884	return (struct coro *)mg->mg_ptr;	1109	return (struct coro *)mg->mg_ptr;
885	}	1110	}
886		1111
		1112	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1113
887	static void	1114	static void
888	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)
889	{	1116	{
890	ta->prev = SvSTATE (prev_sv);	1117	ta->prev = SvSTATE (prev_sv);
891	ta->next = SvSTATE (next_sv);	1118	ta->next = SvSTATE (next_sv);
892	}	1119	}
893		1120
894	static void	1121	static void
895	api_transfer (SV *prev_sv, SV *next_sv)	1122	api_transfer (SV *prev_sv, SV *next_sv)
896	{	1123	{
		1124	dTHX;
897	struct transfer_args ta;	1125	struct transfer_args ta;
898		1126
899	prepare_transfer (&ta, prev_sv, next_sv);	1127	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900	TRANSFER (ta);	1128	TRANSFER (ta);
901	}	1129	}
902		1130
903	static int	1131	static int
904	api_save (SV *coro_sv, int new_save)	1132	api_save (SV *coro_sv, int new_save)
905	{	1133	{
		1134	dTHX;
906	struct coro *coro = SvSTATE (coro_sv);	1135	struct coro *coro = SvSTATE (coro_sv);
907	int old_save = coro->save;	1136	int old_save = coro->save;
908		1137
909	if (new_save >= 0)	1138	if (new_save >= 0)
910	coro->save = new_save;	1139	coro->save = new_save;
…		…
912	return old_save;	1141	return old_save;
913	}	1142	}
914		1143
915	/** Coro ********************************************************************/	1144	/** Coro ********************************************************************/
916		1145
917	#define PRIO_MAX 3
918	#define PRIO_HIGH 1
919	#define PRIO_NORMAL 0
920	#define PRIO_LOW -1
921	#define PRIO_IDLE -3
922	#define PRIO_MIN -4
923
924	/* for Coro.pm */
925	static SV *coro_current;
926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
927	static int coro_nready;
928
929	static void	1146	static void
930	coro_enq (SV *coro_sv)	1147	coro_enq (pTHX_ SV *coro_sv)
931	{	1148	{
932	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);
933	coro_nready++;
934	}	1150	}
935		1151
936	static SV *	1152	static SV *
937	coro_deq (int min_prio)	1153	coro_deq (pTHX_ int min_prio)
938	{	1154	{
939	int prio = PRIO_MAX - PRIO_MIN;	1155	int prio = PRIO_MAX - PRIO_MIN;
940		1156
941	min_prio -= PRIO_MIN;	1157	min_prio -= PRIO_MIN;
942	if (min_prio < 0)	1158	if (min_prio < 0)
943	min_prio = 0;	1159	min_prio = 0;
944		1160
945	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1161	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
946	if (AvFILLp (coro_ready [prio]) >= 0)	1162	if (AvFILLp (coro_ready [prio]) >= 0)
947	{
948	coro_nready--;
949	return av_shift (coro_ready [prio]);	1163	return av_shift (coro_ready [prio]);
950	}
951		1164
952	return 0;	1165	return 0;
953	}	1166	}
954		1167
955	static int	1168	static int
956	api_ready (SV *coro_sv)	1169	api_ready (SV *coro_sv)
957	{	1170	{
		1171	dTHX;
958	struct coro *coro;	1172	struct coro *coro;
959		1173
960	if (SvROK (coro_sv))	1174	if (SvROK (coro_sv))
961	coro_sv = SvRV (coro_sv);	1175	coro_sv = SvRV (coro_sv);
962		1176
963	coro = SvSTATE (coro_sv);	1177	coro = SvSTATE (coro_sv);
964		1178
965	if (coro->flags & CF_READY)	1179	if (coro->flags & CF_READY)
966	return 0;	1180	return 0;
967		1181
968	#if 0 /* this is actually harmless */
969	if (coro->flags & CF_RUNNING)
970	croak ("Coro::ready called on currently running coroutine");
971	#endif
972
973	coro->flags |= CF_READY;	1182	coro->flags |= CF_READY;
974		1183
975	LOCK;	1184	LOCK;
976	coro_enq (SvREFCNT_inc (coro_sv));	1185	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1186	++coro_nready;
977	UNLOCK;	1187	UNLOCK;
978		1188
979	return 1;	1189	return 1;
980	}	1190	}
981		1191
982	static int	1192	static int
983	api_is_ready (SV *coro_sv)	1193	api_is_ready (SV *coro_sv)
984	{	1194	{
		1195	dTHX;
985	return !!SvSTATE (coro_sv)->flags & CF_READY;	1196	return !!(SvSTATE (coro_sv)->flags & CF_READY);
986	}	1197	}
987		1198
988	static void	1199	static void
989	prepare_schedule (struct transfer_args *ta)	1200	prepare_schedule (pTHX_ struct transfer_args *ta)
990	{	1201	{
991	SV *prev, *next;	1202	SV *prev_sv, *next_sv;
992		1203
993	for (;;)	1204	for (;;)
994	{	1205	{
995	LOCK;	1206	LOCK;
996	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;
997	UNLOCK;	1239	UNLOCK;
998
999	if (next)
1000	break;	1240	break;
1001
1002	{
1003	dSP;
1004
1005	ENTER;
1006	SAVETMPS;
1007
1008	PUSHMARK (SP);
1009	PUTBACK;
1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1011
1012	FREETMPS;
1013	LEAVE;
1014	}	1241	}
1015	}
1016
1017	prev = SvRV (coro_current);
1018	SvRV_set (coro_current, next);
1019		1242
1020	/* free this only after the transfer */	1243	/* free this only after the transfer */
1021	LOCK;	1244	prev_sv = SvRV (coro_current);
1022	free_coro_mortal ();	1245	SvRV_set (coro_current, next_sv);
1023	UNLOCK;
1024	coro_mortal = prev;
1025
1026	assert (!SvROK(prev));//D
1027	assert (!SvROK(next));//D
1028
1029	ta->prev = SvSTATE (prev);	1246	ta->prev = SvSTATE (prev_sv);
1030	ta->next = SvSTATE (next);
1031		1247
1032	assert (ta->next->flags & CF_READY);	1248	assert (ta->next->flags & CF_READY);
1033	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;
1034	}	1255	}
1035		1256
1036	static void	1257	static void
1037	prepare_cede (struct transfer_args *ta)	1258	prepare_cede (pTHX_ struct transfer_args *ta)
1038	{	1259	{
1039	api_ready (coro_current);	1260	api_ready (coro_current);
1040
1041	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;
1042	}	1276	}
1043		1277
1044	static void	1278	static void
1045	api_schedule (void)	1279	api_schedule (void)
1046	{	1280	{
		1281	dTHX;
1047	struct transfer_args ta;	1282	struct transfer_args ta;
1048		1283
1049	prepare_schedule (&ta);	1284	prepare_schedule (aTHX_ &ta);
1050	TRANSFER (ta);	1285	TRANSFER (ta);
1051	}	1286	}
1052		1287
1053	static void	1288	static int
1054	api_cede (void)	1289	api_cede (void)
1055	{	1290	{
		1291	dTHX;
1056	struct transfer_args ta;	1292	struct transfer_args ta;
1057		1293
1058	prepare_cede (&ta);	1294	prepare_cede (aTHX_ &ta);
		1295
		1296	if (ta.prev != ta.next)
		1297	{
1059	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;
1060	}	1318	}
1061		1319
1062	MODULE = Coro::State PACKAGE = Coro::State	1320	MODULE = Coro::State PACKAGE = Coro::State
1063		1321
1064	PROTOTYPES: DISABLE	1322	PROTOTYPES: DISABLE
…		…
1069	MUTEX_INIT (&coro_mutex);	1327	MUTEX_INIT (&coro_mutex);
1070	#endif	1328	#endif
1071	BOOT_PAGESIZE;	1329	BOOT_PAGESIZE;
1072		1330
1073	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));
1074		1337
1075	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1338	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1076	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1339	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1077	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1340	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1078	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));
1079	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1344	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1080		1345
1081	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;
1082		1351
1083	coroapi.ver = CORO_API_VERSION;	1352	coroapi.ver = CORO_API_VERSION;
1084	coroapi.transfer = api_transfer;	1353	coroapi.transfer = api_transfer;
1085		1354
1086	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1355	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1094	HV *hv;	1363	HV *hv;
1095	int i;	1364	int i;
1096		1365
1097	Newz (0, coro, 1, struct coro);	1366	Newz (0, coro, 1, struct coro);
1098	coro->args = newAV ();	1367	coro->args = newAV ();
1099	coro->save = CORO_SAVE_ALL;	1368	coro->save = CORO_SAVE_DEF;
1100	coro->flags = CF_NEW;	1369	coro->flags = CF_NEW;
1101		1370
		1371	if (coro_first) coro_first->prev = coro;
		1372	coro->next = coro_first;
		1373	coro_first = coro;
		1374
1102	hv = newHV ();	1375	coro->hv = hv = newHV ();
1103	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;
1104	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1377	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1105		1378
1106	for (i = 1; i < items; i++)	1379	for (i = 1; i < items; i++)
1107	av_push (coro->args, newSVsv (ST (i)));	1380	av_push (coro->args, newSVsv (ST (i)));
…		…
1114	CODE:	1387	CODE:
1115	RETVAL = api_save (coro, new_save);	1388	RETVAL = api_save (coro, new_save);
1116	OUTPUT:	1389	OUTPUT:
1117	RETVAL	1390	RETVAL
1118		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
1119	void	1403	void
1120	_set_stacklevel (...)	1404	_set_stacklevel (...)
1121	ALIAS:	1405	ALIAS:
1122	Coro::State::transfer = 1	1406	Coro::State::transfer = 1
1123	Coro::schedule = 2	1407	Coro::schedule = 2
1124	Coro::cede = 3	1408	Coro::cede = 3
		1409	Coro::cede_notself = 4
1125	CODE:	1410	CODE:
1126	{	1411	{
1127	struct transfer_args ta;	1412	struct transfer_args ta;
1128		1413
1129	switch (ix)	1414	switch (ix)
…		…
1135		1420
1136	case 1:	1421	case 1:
1137	if (items != 2)	1422	if (items != 2)
1138	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);
1139		1424
1140	prepare_transfer (&ta, ST (0), ST (1));	1425	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1141	break;	1426	break;
1142		1427
1143	case 2:	1428	case 2:
1144	prepare_schedule (&ta);	1429	prepare_schedule (aTHX_ &ta);
1145	break;	1430	break;
1146		1431
1147	case 3:	1432	case 3:
1148	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
1149	break;	1440	break;
1150	}	1441	}
1151		1442
		1443	BARRIER;
1152	TRANSFER (ta);	1444	TRANSFER (ta);
1153	}
1154		1445
1155	void	1446	if (GIMME_V != G_VOID && ta.next != ta.prev)
1156	_clone_state_from (SV *dst, SV *src)	1447	XSRETURN_YES;
		1448	}
		1449
		1450	bool
		1451	_destroy (SV *coro_sv)
1157	CODE:	1452	CODE:
1158	{	1453	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1159	struct coro *coro_src = SvSTATE (src);	1454	OUTPUT:
1160		1455	RETVAL
1161	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1162
1163	++coro_src->refcnt;
1164	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1165	}
1166		1456
1167	void	1457	void
1168	_exit (code)	1458	_exit (code)
1169	int code	1459	int code
1170	PROTOTYPE: $	1460	PROTOTYPE: $
1171	CODE:	1461	CODE:
1172	_exit (code);	1462	_exit (code);
1173		1463
1174	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
1175	cctx_count ()	1474	cctx_count ()
1176	CODE:	1475	CODE:
1177	RETVAL = cctx_count;	1476	RETVAL = cctx_count;
1178	OUTPUT:	1477	OUTPUT:
1179	RETVAL	1478	RETVAL
…		…
1183	CODE:	1482	CODE:
1184	RETVAL = cctx_idle;	1483	RETVAL = cctx_idle;
1185	OUTPUT:	1484	OUTPUT:
1186	RETVAL	1485	RETVAL
1187		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
1188	MODULE = Coro::State PACKAGE = Coro	1596	MODULE = Coro::State PACKAGE = Coro
1189		1597
1190	BOOT:	1598	BOOT:
1191	{	1599	{
1192	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);
1193		1608
1194	coro_stash = gv_stashpv ("Coro", TRUE);	1609	coro_stash = gv_stashpv ("Coro", TRUE);
1195		1610
1196	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1611	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1197	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1612	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1198	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1613	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1199	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1614	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1200	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1615	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1201	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1616	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1202		1617
1203	coro_current = get_sv ("Coro::current", FALSE);
1204	SvREADONLY_on (coro_current);
1205
1206	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1618	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1207	coro_ready[i] = newAV ();	1619	coro_ready[i] = newAV ();
1208		1620
1209	{	1621	{
1210	SV *sv = perl_get_sv("Coro::API", 1);	1622	SV *sv = perl_get_sv("Coro::API", 1);
1211		1623
1212	coroapi.schedule = api_schedule;	1624	coroapi.schedule = api_schedule;
1213	coroapi.save = api_save;	1625	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1626	coroapi.cede = api_cede;
		1627	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1628	coroapi.ready = api_ready;
1216	coroapi.is_ready = api_is_ready;	1629	coroapi.is_ready = api_is_ready;
1217	coroapi.nready = &coro_nready;	1630	coroapi.nready = &coro_nready;
1218	coroapi.current = coro_current;	1631	coroapi.current = coro_current;
1219		1632
1220	GCoroAPI = &coroapi;	1633	GCoroAPI = &coroapi;
1221	sv_setiv (sv, (IV)&coroapi);	1634	sv_setiv (sv, (IV)&coroapi);
1222	SvREADONLY_on (sv);	1635	SvREADONLY_on (sv);
1223	}	1636	}
…		…
1239	RETVAL = coro->prio;	1652	RETVAL = coro->prio;
1240		1653
1241	if (items > 1)	1654	if (items > 1)
1242	{	1655	{
1243	if (ix)	1656	if (ix)
1244	newprio += coro->prio;	1657	newprio = coro->prio - newprio;
1245		1658
1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1659	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1660	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1248		1661
1249	coro->prio = newprio;	1662	coro->prio = newprio;
1250	}	1663	}
1251	}	1664	}
		1665	OUTPUT:
		1666	RETVAL
1252		1667
1253	SV *	1668	SV *
1254	ready (SV *self)	1669	ready (SV *self)
1255	PROTOTYPE: $	1670	PROTOTYPE: $
1256	CODE:	1671	CODE:
1257	RETVAL = boolSV (api_ready (self));	1672	RETVAL = boolSV (api_ready (self));
1258	OUTPUT:	1673	OUTPUT:
1259	RETVAL	1674	RETVAL
1260		1675
1261	SV *
1262	is_ready (SV *self)
1263	PROTOTYPE: $
1264	CODE:
1265	RETVAL = boolSV (api_is_ready (self));
1266	OUTPUT:
1267	RETVAL
1268
1269	int	1676	int
1270	nready (...)	1677	nready (...)
1271	PROTOTYPE:	1678	PROTOTYPE:
1272	CODE:	1679	CODE:
1273	RETVAL = coro_nready;	1680	RETVAL = coro_nready;
1274	OUTPUT:	1681	OUTPUT:
1275	RETVAL	1682	RETVAL
1276		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
1277	MODULE = Coro::State PACKAGE = Coro::AIO	1737	MODULE = Coro::State PACKAGE = Coro::AIO
1278		1738
1279	SV *	1739	SV *
1280	_get_state ()	1740	_get_state ()
1281	CODE:	1741	CODE:

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