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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
2		5
3	#include "EXTERN.h"	6	#include "EXTERN.h"
4	#include "perl.h"	7	#include "perl.h"
5	#include "XSUB.h"	8	#include "XSUB.h"
6		9
7	#include "patchlevel.h"	10	#include "patchlevel.h"
8		11
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \
17	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19	#if !PERL_VERSION_ATLEAST (5,6,0)
20	# ifndef PL_ppaddr
21	# define PL_ppaddr ppaddr
22	# endif
23	# ifndef call_sv
24	# define call_sv perl_call_sv
25	# endif
26	# ifndef get_sv
27	# define get_sv perl_get_sv
28	# endif
29	# ifndef get_cv
30	# define get_cv perl_get_cv
31	# endif
32	# ifndef IS_PADGV
33	# define IS_PADGV(v) 0
34	# endif
35	# ifndef IS_PADCONST
36	# define IS_PADCONST(v) 0
37	# endif
38	#endif
39
40	#include <stdio.h>	12	#include <stdio.h>
41	#include <errno.h>	13	#include <errno.h>
42		14	#include <assert.h>
43	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	15	#include <inttypes.h> /* portable stdint.h */
44	# undef STACKGUARD
45	#endif
46
47	#ifndef STACKGUARD
48	# define STACKGUARD 0
49	#endif
50		16
51	#ifdef HAVE_MMAP	17	#ifdef HAVE_MMAP
52	# include <unistd.h>	18	# include <unistd.h>
53	# include <sys/mman.h>	19	# include <sys/mman.h>
54	# ifndef MAP_ANONYMOUS	20	# ifndef MAP_ANONYMOUS
69	#else	35	#else
70	# define PAGESIZE 0	36	# define PAGESIZE 0
71	# define BOOT_PAGESIZE (void)0	37	# define BOOT_PAGESIZE (void)0
72	#endif	38	#endif
73		39
74	/* The next macro should declare a variable stacklevel that contains and approximation	40	#if CORO_USE_VALGRIND
75	* to the current C stack pointer. Its property is that it changes with each call	41	# include <valgrind/valgrind.h>
76	* and should be unique. */	42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		43	#else
		44	# define REGISTER_STACK(cctx,start,end)
		45	#endif
		46
		47	/* the maximum number of idle cctx that will be pooled */
		48	#define MAX_IDLE_CCTX 8
		49
		50	#define PERL_VERSION_ATLEAST(a,b,c) \
		51	(PERL_REVISION > (a) \
		52	\|\| (PERL_REVISION == (a) \
		53	&& (PERL_VERSION > (b) \
		54	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		55
		56	#if !PERL_VERSION_ATLEAST (5,6,0)
		57	# ifndef PL_ppaddr
		58	# define PL_ppaddr ppaddr
		59	# endif
		60	# ifndef call_sv
		61	# define call_sv perl_call_sv
		62	# endif
		63	# ifndef get_sv
		64	# define get_sv perl_get_sv
		65	# endif
		66	# ifndef get_cv
		67	# define get_cv perl_get_cv
		68	# endif
		69	# ifndef IS_PADGV
		70	# define IS_PADGV(v) 0
		71	# endif
		72	# ifndef IS_PADCONST
		73	# define IS_PADCONST(v) 0
		74	# endif
		75	#endif
		76
		77	/* 5.8.7 */
		78	#ifndef SvRV_set
		79	# define SvRV_set(s,v) SvRV(s) = (v)
		80	#endif
		81
		82	/* 5.8.8 */
		83	#ifndef GV_NOTQUAL
		84	# define GV_NOTQUAL 0
		85	#endif
		86	#ifndef newSV
		87	# define newSV(l) NEWSV(0,l)
		88	#endif
		89
		90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		91	# undef CORO_STACKGUARD
		92	#endif
		93
		94	#ifndef CORO_STACKGUARD
		95	# define CORO_STACKGUARD 0
		96	#endif
		97
		98	/* prefer perl internal functions over our own? */
		99	#ifndef CORO_PREFER_PERL_FUNCTIONS
		100	# define CORO_PREFER_PERL_FUNCTIONS 0
		101	#endif
		102
		103	/* The next macros try to return the current stack pointer, in an as
		104	* portable way as possible. */
77	#define dSTACKLEVEL int stacklevel	105	#define dSTACKLEVEL volatile char stacklevel
78	#define STACKLEVEL ((void *)&stacklevel)	106	#define STACKLEVEL ((void *)&stacklevel)
79		107
80	#define IN_DESTRUCT (PL_main_cv == Nullcv)	108	#define IN_DESTRUCT (PL_main_cv == Nullcv)
81		109
82	#if __GNUC__ >= 3	110	#if __GNUC__ >= 3
83	# define attribute(x) __attribute__(x)	111	# define attribute(x) __attribute__(x)
		112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		113	# define expect(expr,value) __builtin_expect ((expr),(value))
84	#else	114	#else
85	# define attribute(x)	115	# define attribute(x)
		116	# define BARRIER
		117	# define expect(expr,value) (expr)
86	#endif	118	#endif
		119
		120	#define expect_false(expr) expect ((expr) != 0, 0)
		121	#define expect_true(expr) expect ((expr) != 0, 1)
87		122
88	#define NOINLINE attribute ((noinline))	123	#define NOINLINE attribute ((noinline))
89		124
90	#include "CoroAPI.h"	125	#include "CoroAPI.h"
91
92	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93		126
94	#ifdef USE_ITHREADS	127	#ifdef USE_ITHREADS
95	static perl_mutex coro_mutex;	128	static perl_mutex coro_mutex;
96	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	130	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98	#else	131	#else
99	# define LOCK (void)0	132	# define LOCK (void)0
100	# define UNLOCK (void)0	133	# define UNLOCK (void)0
101	#endif	134	#endif
102		135
		136	/* helper storage struct for Coro::AIO */
		137	struct io_state
		138	{
		139	int errorno;
		140	I32 laststype;
		141	int laststatval;
		142	Stat_t statcache;
		143	};
		144
		145	static size_t coro_stacksize = CORO_STACKSIZE;
103	static struct CoroAPI coroapi;	146	static struct CoroAPI coroapi;
104	static AV main_mainstack; / used to differentiate between $main and others */	147	static AV main_mainstack; / used to differentiate between $main and others */
		148	static JMPENV *main_top_env;
105	static HV coro_state_stash, coro_stash;	149	static HV coro_state_stash, coro_stash;
106	static SV coro_mortal; / will be freed after next transfer */	150	static SV coro_mortal; / will be freed after next transfer */
107		151
		152	static GV irsgv; / $/ */
		153	static GV stdoutgv; / STDOUT /
		154
		155	static HV hv_sig; / %SIG */
		156	static SV *sv_diehook;
		157	static SV *sv_warnhook;
		158
		159	/* async_pool helper stuff */
		160	static SV *sv_pool_rss;
		161	static SV *sv_pool_size;
		162	static AV *av_async_pool;
		163
108	static struct coro_cctx *cctx_first;	164	static struct coro_cctx *cctx_first;
109	static int cctx_count, cctx_idle;	165	static int cctx_count, cctx_idle;
		166
		167	enum {
		168	CC_MAPPED = 0x01,
		169	CC_NOREUSE = 0x02, /* throw this away after tracing */
		170	CC_TRACE = 0x04,
		171	CC_TRACE_SUB = 0x08, /* trace sub calls */
		172	CC_TRACE_LINE = 0x10, /* trace each statement */
		173	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
		174	};
110		175
111	/* this is a structure representing a c-level coroutine */	176	/* this is a structure representing a c-level coroutine */
112	typedef struct coro_cctx {	177	typedef struct coro_cctx {
113	struct coro_cctx *next;	178	struct coro_cctx *next;
114		179
115	/* the stack */	180	/* the stack */
116	void *sptr;	181	void *sptr;
117	long ssize; /* positive == mmap, otherwise malloc */	182	size_t ssize;
118		183
119	/* cpu state */	184	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	185	void idle_sp; / sp of top-level transfer/schedule/cede call */
		186	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
121	JMPENV *top_env;	187	JMPENV *top_env;
122	coro_context cctx;	188	coro_context cctx;
123		189
124	#if USE_VALGRIND	190	#if CORO_USE_VALGRIND
125	int valgrind_id;	191	int valgrind_id;
126	#endif	192	#endif
		193	unsigned char flags;
127	} coro_cctx;	194	} coro_cctx;
		195
		196	enum {
		197	CF_RUNNING = 0x0001, /* coroutine is running */
		198	CF_READY = 0x0002, /* coroutine is ready */
		199	CF_NEW = 0x0004, /* has never been switched to */
		200	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		201	};
		202
		203	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		204	typedef struct {
		205	SV *defsv;
		206	AV *defav;
		207	SV *errsv;
		208	SV *irsgv;
		209	#define VAR(name,type) type name;
		210	# include "state.h"
		211	#undef VAR
		212	} perl_slots;
		213
		214	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
128		215
129	/* this is a structure representing a perl-level coroutine */	216	/* this is a structure representing a perl-level coroutine */
130	struct coro {	217	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	218	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	219	coro_cctx *cctx;
133		220
		221	/* process data */
		222	AV *mainstack;
		223	perl_slots slot; / basically the saved sp */
		224
134	/* data associated with this coroutine (initial args) */	225	AV args; / data associated with this coroutine (initial args) */
135	AV *args;	226	int refcnt; /* coroutines are refcounted, yes */
136	int refcnt;	227	int flags; /* CF_ flags */
		228	HV hv; / the perl hash associated with this coro, if any */
137		229
138	/* optionally saved, might be zero */	230	/* statistics */
139	AV *defav;	231	int usecount; /* number of transfers to this coro */
140	SV *defsv;
141	SV *errsv;
142
143	#define VAR(name,type) type name;
144	# include "state.h"
145	#undef VAR
146		232
147	/* coro process data */	233	/* coro process data */
148	int prio;	234	int prio;
		235	SV throw; / exception to be thrown */
		236
		237	/* async_pool */
		238	SV *saved_deffh;
		239
		240	/* linked list */
		241	struct coro next, prev;
149	};	242	};
150		243
151	typedef struct coro *Coro__State;	244	typedef struct coro *Coro__State;
152	typedef struct coro *Coro__State_or_hashref;	245	typedef struct coro *Coro__State_or_hashref;
153		246
		247	/ Coro ******************************************************************/
		248
		249	#define PRIO_MAX 3
		250	#define PRIO_HIGH 1
		251	#define PRIO_NORMAL 0
		252	#define PRIO_LOW -1
		253	#define PRIO_IDLE -3
		254	#define PRIO_MIN -4
		255
		256	/* for Coro.pm */
		257	static SV *coro_current;
		258	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		259	static int coro_nready;
		260	static struct coro *coro_first;
		261
		262	/ lowlevel stuff ********************************************************/
		263
		264	static SV *
		265	coro_get_sv (pTHX_ const char *name, int create)
		266	{
		267	#if PERL_VERSION_ATLEAST (5,9,0)
		268	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		269	get_sv (name, create);
		270	#endif
		271	return get_sv (name, create);
		272	}
		273
154	static AV *	274	static AV *
		275	coro_get_av (pTHX_ const char *name, int create)
		276	{
		277	#if PERL_VERSION_ATLEAST (5,9,0)
		278	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		279	get_av (name, create);
		280	#endif
		281	return get_av (name, create);
		282	}
		283
		284	static HV *
		285	coro_get_hv (pTHX_ const char *name, int create)
		286	{
		287	#if PERL_VERSION_ATLEAST (5,9,0)
		288	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		289	get_hv (name, create);
		290	#endif
		291	return get_hv (name, create);
		292	}
		293
		294	static AV *
155	coro_clone_padlist (CV *cv)	295	coro_clone_padlist (pTHX_ CV *cv)
156	{	296	{
157	AV *padlist = CvPADLIST (cv);	297	AV *padlist = CvPADLIST (cv);
158	AV newpadlist, newpad;	298	AV newpadlist, newpad;
159		299
160	newpadlist = newAV ();	300	newpadlist = newAV ();
…		…
172		312
173	return newpadlist;	313	return newpadlist;
174	}	314	}
175		315
176	static void	316	static void
177	free_padlist (AV *padlist)	317	free_padlist (pTHX_ AV *padlist)
178	{	318	{
179	/* may be during global destruction */	319	/* may be during global destruction */
180	if (SvREFCNT (padlist))	320	if (SvREFCNT (padlist))
181	{	321	{
182	I32 i = AvFILLp (padlist);	322	I32 i = AvFILLp (padlist);
…		…
203	AV *padlist;	343	AV *padlist;
204	AV av = (AV )mg->mg_obj;	344	AV av = (AV )mg->mg_obj;
205		345
206	/* casting is fun. */	346	/* casting is fun. */
207	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	347	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
208	free_padlist (padlist);	348	free_padlist (aTHX_ padlist);
209		349
210	SvREFCNT_dec (av);	350	SvREFCNT_dec (av);
211		351
212	return 0;	352	return 0;
213	}	353	}
214		354
215	#define PERL_MAGIC_coro PERL_MAGIC_ext	355	#define PERL_MAGIC_coro PERL_MAGIC_ext
216		356
217	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	357	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
218		358
		359	#define CORO_MAGIC(cv) \
		360	SvMAGIC (cv) \
		361	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		362	? SvMAGIC (cv) \
		363	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		364	: 0
		365
		366	static struct coro *
		367	SvSTATE_ (pTHX_ SV *coro)
		368	{
		369	HV *stash;
		370	MAGIC *mg;
		371
		372	if (SvROK (coro))
		373	coro = SvRV (coro);
		374
		375	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		376	croak ("Coro::State object required");
		377
		378	stash = SvSTASH (coro);
		379	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		380	{
		381	/* very slow, but rare, check */
		382	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		383	croak ("Coro::State object required");
		384	}
		385
		386	mg = CORO_MAGIC (coro);
		387	return (struct coro *)mg->mg_ptr;
		388	}
		389
		390	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		391
219	/* the next two functions merely cache the padlists */	392	/* the next two functions merely cache the padlists */
220	static void	393	static void
221	get_padlist (CV *cv)	394	get_padlist (pTHX_ CV *cv)
222	{	395	{
223	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	396	MAGIC *mg = CORO_MAGIC (cv);
		397	AV *av;
224		398
225	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	399	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
226	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	400	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
227	else	401	else
228	{	402	{
229	#if 0	403	#if CORO_PREFER_PERL_FUNCTIONS
230	/* this is probably cleaner, but also slower? */	404	/* this is probably cleaner, but also slower? */
231	CV *cp = Perl_cv_clone (cv);	405	CV *cp = Perl_cv_clone (cv);
232	CvPADLIST (cv) = CvPADLIST (cp);	406	CvPADLIST (cv) = CvPADLIST (cp);
233	CvPADLIST (cp) = 0;	407	CvPADLIST (cp) = 0;
234	SvREFCNT_dec (cp);	408	SvREFCNT_dec (cp);
235	#else	409	#else
236	CvPADLIST (cv) = coro_clone_padlist (cv);	410	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
237	#endif	411	#endif
238	}	412	}
239	}	413	}
240		414
241	static void	415	static void
242	put_padlist (CV *cv)	416	put_padlist (pTHX_ CV *cv)
243	{	417	{
244	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	418	MAGIC *mg = CORO_MAGIC (cv);
		419	AV *av;
245		420
246	if (!mg)	421	if (expect_false (!mg))
247	{	422	{
248	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	423	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
249	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	424	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
250	mg->mg_virtual = &vtbl_coro;	425	mg->mg_virtual = &vtbl_coro;
251	mg->mg_obj = (SV *)newAV ();	426	mg->mg_obj = (SV *)newAV ();
252	}	427	}
253		428
254	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	429	av = (AV *)mg->mg_obj;
255	}
256		430
257	#define SB do {	431	if (expect_false (AvFILLp (av) >= AvMAX (av)))
258	#define SE } while (0)	432	av_extend (av, AvMAX (av) + 1);
259		433
260	#define LOAD(state) load_state((state));	434	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
261	#define SAVE(state,flags) save_state((state),(flags));	435	}
262		436
263	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	437	/ load & save, init *****************************************************/
264		438
265	static void	439	static void
266	load_state(Coro__State c)	440	load_perl (pTHX_ Coro__State c)
267	{	441	{
		442	perl_slots *slot = c->slot;
		443	c->slot = 0;
		444
		445	PL_mainstack = c->mainstack;
		446
		447	GvSV (PL_defgv) = slot->defsv;
		448	GvAV (PL_defgv) = slot->defav;
		449	GvSV (PL_errgv) = slot->errsv;
		450	GvSV (irsgv) = slot->irsgv;
		451
268	#define VAR(name,type) PL_ ## name = c->name;	452	#define VAR(name,type) PL_ ## name = slot->name;
269	# include "state.h"	453	# include "state.h"
270	#undef VAR	454	#undef VAR
271		455
272	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	456	/hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);/
273	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	457	/hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);/
274	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
275		458
276	{	459	{
277	dSP;	460	dSP;
		461
278	CV *cv;	462	CV *cv;
279		463
280	/* now do the ugly restore mess */	464	/* now do the ugly restore mess */
281	while ((cv = (CV *)POPs))	465	while (expect_true (cv = (CV *)POPs))
282	{	466	{
283	AV padlist = (AV )POPs;
284
285	if (padlist)
286	{
287	put_padlist (cv); /* mark this padlist as available */	467	put_padlist (aTHX_ cv); /* mark this padlist as available */
288	CvPADLIST(cv) = padlist;	468	CvDEPTH (cv) = PTR2IV (POPs);
289	}	469	CvPADLIST (cv) = (AV *)POPs;
290
291	++CvDEPTH(cv);
292	}	470	}
293		471
294	PUTBACK;	472	PUTBACK;
295	}	473	}
296	}	474	}
297		475
298	static void	476	static void
299	save_state(Coro__State c, int flags)	477	save_perl (pTHX_ Coro__State c)
300	{	478	{
301	{	479	{
302	dSP;	480	dSP;
303	I32 cxix = cxstack_ix;	481	I32 cxix = cxstack_ix;
304	PERL_CONTEXT *ccstk = cxstack;	482	PERL_CONTEXT *ccstk = cxstack;
…		…
307	/*	485	/*
308	* the worst thing you can imagine happens first - we have to save	486	* the worst thing you can imagine happens first - we have to save
309	* (and reinitialize) all cv's in the whole callchain :(	487	* (and reinitialize) all cv's in the whole callchain :(
310	*/	488	*/
311		489
312	PUSHs (Nullsv);	490	XPUSHs (Nullsv);
313	/* this loop was inspired by pp_caller */	491	/* this loop was inspired by pp_caller */
314	for (;;)	492	for (;;)
315	{	493	{
316	while (cxix >= 0)	494	while (expect_true (cxix >= 0))
317	{	495	{
318	PERL_CONTEXT *cx = &ccstk[cxix--];	496	PERL_CONTEXT *cx = &ccstk[cxix--];
319		497
320	if (CxTYPE(cx) == CXt_SUB)	498	if (expect_true (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT))
321	{	499	{
322	CV *cv = cx->blk_sub.cv;	500	CV *cv = cx->blk_sub.cv;
		501
323	if (CvDEPTH(cv))	502	if (expect_true (CvDEPTH (cv)))
324	{	503	{
325	EXTEND (SP, CvDEPTH(cv)*2);	504	EXTEND (SP, 3);
326
327	while (--CvDEPTH(cv))
328	{
329	/* this tells the restore code to increment CvDEPTH */
330	PUSHs (Nullsv);
331	PUSHs ((SV *)cv);
332	}
333
334	PUSHs ((SV *)CvPADLIST(cv));	505	PUSHs ((SV *)CvPADLIST (cv));
		506	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
335	PUSHs ((SV *)cv);	507	PUSHs ((SV *)cv);
336		508
		509	CvDEPTH (cv) = 0;
337	get_padlist (cv);	510	get_padlist (aTHX_ cv);
338	}	511	}
339	}	512	}
340	#ifdef CXt_FORMAT
341	else if (CxTYPE(cx) == CXt_FORMAT)
342	{
343	/* I never used formats, so how should I know how these are implemented? */
344	/* my bold guess is as a simple, plain sub... */
345	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
346	}
347	#endif
348	}	513	}
349		514
350	if (top_si->si_type == PERLSI_MAIN)	515	if (expect_true (top_si->si_type == PERLSI_MAIN))
351	break;	516	break;
352		517
353	top_si = top_si->si_prev;	518	top_si = top_si->si_prev;
354	ccstk = top_si->si_cxstack;	519	ccstk = top_si->si_cxstack;
355	cxix = top_si->si_cxix;	520	cxix = top_si->si_cxix;
356	}	521	}
357		522
358	PUTBACK;	523	PUTBACK;
359	}	524	}
360		525
361	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	526	/* allocate some space on the context stack for our purposes */
362	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	527	/* we manually unroll here, as usually 2 slots is enough */
363	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	528	if (SLOT_COUNT >= 1) CXINC;
		529	if (SLOT_COUNT >= 2) CXINC;
		530	if (SLOT_COUNT >= 3) CXINC;
		531	{
		532	int i;
		533	for (i = 3; i < SLOT_COUNT; ++i)
		534	CXINC;
		535	}
		536	cxstack_ix -= SLOT_COUNT; /* undo allocation */
364		537
		538	c->mainstack = PL_mainstack;
		539
		540	{
		541	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
		542
		543	slot->defav = GvAV (PL_defgv);
		544	slot->defsv = DEFSV;
		545	slot->errsv = ERRSV;
		546	slot->irsgv = GvSV (irsgv);
		547
365	#define VAR(name,type)c->name = PL_ ## name;	548	#define VAR(name,type) slot->name = PL_ ## name;
366	# include "state.h"	549	# include "state.h"
367	#undef VAR	550	#undef VAR
		551	}
368	}	552	}
369		553
370	/*	554	/*
371	* allocate various perl stacks. This is an exact copy	555	* allocate various perl stacks. This is an exact copy
372	* of perl.c:init_stacks, except that it uses less memory	556	* of perl.c:init_stacks, except that it uses less memory
373	* on the (sometimes correct) assumption that coroutines do	557	* on the (sometimes correct) assumption that coroutines do
374	* not usually need a lot of stackspace.	558	* not usually need a lot of stackspace.
375	*/	559	*/
		560	#if CORO_PREFER_PERL_FUNCTIONS
		561	# define coro_init_stacks init_stacks
		562	#else
376	static void	563	static void
377	coro_init_stacks ()	564	coro_init_stacks (pTHX)
378	{	565	{
379	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	566	PL_curstackinfo = new_stackinfo(32, 8);
380	PL_curstackinfo->si_type = PERLSI_MAIN;	567	PL_curstackinfo->si_type = PERLSI_MAIN;
381	PL_curstack = PL_curstackinfo->si_stack;	568	PL_curstack = PL_curstackinfo->si_stack;
382	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	569	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
383		570
384	PL_stack_base = AvARRAY(PL_curstack);	571	PL_stack_base = AvARRAY(PL_curstack);
385	PL_stack_sp = PL_stack_base;	572	PL_stack_sp = PL_stack_base;
386	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	573	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
387		574
388	New(50,PL_tmps_stack,96,SV*);	575	New(50,PL_tmps_stack,32,SV*);
389	PL_tmps_floor = -1;	576	PL_tmps_floor = -1;
390	PL_tmps_ix = -1;	577	PL_tmps_ix = -1;
391	PL_tmps_max = 96;	578	PL_tmps_max = 32;
392		579
393	New(54,PL_markstack,16,I32);	580	New(54,PL_markstack,16,I32);
394	PL_markstack_ptr = PL_markstack;	581	PL_markstack_ptr = PL_markstack;
395	PL_markstack_max = PL_markstack + 16;	582	PL_markstack_max = PL_markstack + 16;
396		583
397	#ifdef SET_MARK_OFFSET	584	#ifdef SET_MARK_OFFSET
398	SET_MARK_OFFSET;	585	SET_MARK_OFFSET;
399	#endif	586	#endif
400		587
401	New(54,PL_scopestack,16,I32);	588	New(54,PL_scopestack,8,I32);
402	PL_scopestack_ix = 0;	589	PL_scopestack_ix = 0;
403	PL_scopestack_max = 16;	590	PL_scopestack_max = 8;
404		591
405	New(54,PL_savestack,96,ANY);	592	New(54,PL_savestack,24,ANY);
406	PL_savestack_ix = 0;	593	PL_savestack_ix = 0;
407	PL_savestack_max = 96;	594	PL_savestack_max = 24;
408		595
409	#if !PERL_VERSION_ATLEAST (5,9,0)	596	#if !PERL_VERSION_ATLEAST (5,9,0)
410	New(54,PL_retstack,8,OP*);	597	New(54,PL_retstack,4,OP*);
411	PL_retstack_ix = 0;	598	PL_retstack_ix = 0;
412	PL_retstack_max = 8;	599	PL_retstack_max = 4;
413	#endif	600	#endif
414	}	601	}
		602	#endif
415		603
416	/*	604	/*
417	* destroy the stacks, the callchain etc...	605	* destroy the stacks, the callchain etc...
418	*/	606	*/
419	static void	607	static void
420	coro_destroy_stacks ()	608	coro_destroy_stacks (pTHX)
421	{	609	{
422	if (!IN_DESTRUCT)
423	{
424	/* is this ugly, I ask? */
425	LEAVE_SCOPE (0);
426
427	/* sure it is, but more important: is it correct?? :/ */
428	FREETMPS;
429
430	/POPSTACK_TO (PL_mainstack);//D//use/
431	}
432
433	while (PL_curstackinfo->si_next)	610	while (PL_curstackinfo->si_next)
434	PL_curstackinfo = PL_curstackinfo->si_next;	611	PL_curstackinfo = PL_curstackinfo->si_next;
435		612
436	while (PL_curstackinfo)	613	while (PL_curstackinfo)
437	{	614	{
438	PERL_SI *p = PL_curstackinfo->si_prev;	615	PERL_SI *p = PL_curstackinfo->si_prev;
439		616
440	{ /D//remove/
441	dSP;
442	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
443	PUTBACK; /* possibly superfluous */
444	}
445
446	if (!IN_DESTRUCT)	617	if (!IN_DESTRUCT)
447	{
448	dounwind (-1);/D//remove/
449	SvREFCNT_dec (PL_curstackinfo->si_stack);	618	SvREFCNT_dec (PL_curstackinfo->si_stack);
450	}
451		619
452	Safefree (PL_curstackinfo->si_cxstack);	620	Safefree (PL_curstackinfo->si_cxstack);
453	Safefree (PL_curstackinfo);	621	Safefree (PL_curstackinfo);
454	PL_curstackinfo = p;	622	PL_curstackinfo = p;
455	}	623	}
…		…
461	#if !PERL_VERSION_ATLEAST (5,9,0)	629	#if !PERL_VERSION_ATLEAST (5,9,0)
462	Safefree (PL_retstack);	630	Safefree (PL_retstack);
463	#endif	631	#endif
464	}	632	}
465		633
466	static void	634	static size_t
467	setup_coro (struct coro *coro)	635	coro_rss (pTHX_ struct coro *coro)
		636	{
		637	size_t rss = sizeof (*coro);
		638
		639	if (coro->mainstack)
		640	{
		641	perl_slots tmp_slot;
		642	perl_slots *slot;
		643
		644	if (coro->flags & CF_RUNNING)
		645	{
		646	slot = &tmp_slot;
		647
		648	#define VAR(name,type) slot->name = PL_ ## name;
		649	# include "state.h"
		650	#undef VAR
		651	}
		652	else
		653	slot = coro->slot;
		654
		655	rss += sizeof (slot->curstackinfo);
		656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		658	rss += slot->tmps_max * sizeof (SV *);
		659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		660	rss += slot->scopestack_max * sizeof (I32);
		661	rss += slot->savestack_max * sizeof (ANY);
		662
		663	#if !PERL_VERSION_ATLEAST (5,9,0)
		664	rss += slot->retstack_max * sizeof (OP *);
		665	#endif
		666	}
		667
		668	return rss;
		669	}
		670
		671	/ coroutine stack handling **********************************************/
		672
		673	static void
		674	coro_setup (pTHX_ struct coro *coro)
468	{	675	{
469	/*	676	/*
470	* emulate part of the perl startup here.	677	* emulate part of the perl startup here.
471	*/	678	*/
472
473	coro_init_stacks ();	679	coro_init_stacks (aTHX);
474		680
		681	PL_runops = RUNOPS_DEFAULT;
		682	PL_curcop = &PL_compiling;
		683	PL_in_eval = EVAL_NULL;
475	PL_curcop = 0;	684	PL_comppad = 0;
476	PL_in_eval = 0;
477	PL_curpm = 0;	685	PL_curpm = 0;
		686	PL_curpad = 0;
		687	PL_localizing = 0;
		688	PL_dirty = 0;
		689	PL_restartop = 0;
		690	PL_diehook = 0; hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		691	PL_warnhook = 0; hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		692
		693	GvSV (PL_defgv) = newSV (0);
		694	GvAV (PL_defgv) = coro->args; coro->args = 0;
		695	GvSV (PL_errgv) = newSV (0);
		696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		697	PL_rs = newSVsv (GvSV (irsgv));
		698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
478		699
479	{	700	{
480	dSP;	701	dSP;
481	LOGOP myop;	702	LOGOP myop;
482		703
483	/* I have no idea why this is needed, but it is */
484	PUSHMARK (SP);
485
486	SvREFCNT_dec (GvAV (PL_defgv));
487	GvAV (PL_defgv) = coro->args; coro->args = 0;
488
489	Zero (&myop, 1, LOGOP);	704	Zero (&myop, 1, LOGOP);
490	myop.op_next = Nullop;	705	myop.op_next = Nullop;
491	myop.op_flags = OPf_WANT_VOID;	706	myop.op_flags = OPf_WANT_VOID;
492		707
		708	PUSHMARK (SP);
		709	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
		710	PUTBACK;
493	PL_op = (OP *)&myop;	711	PL_op = (OP *)&myop;
494
495	PUSHMARK (SP);
496	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
497	PUTBACK;
498	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
499	SPAGAIN;	713	SPAGAIN;
500
501	ENTER; /* necessary e.g. for dounwind */
502	}	714	}
503	}
504		715
		716	/* this newly created coroutine might be run on an existing cctx which most
		717	* likely was suspended in set_stacklevel, called from entersub.
		718	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		719	* so we ENTER here for symmetry
		720	*/
		721	ENTER;
		722	}
		723
505	static void	724	static void
		725	coro_destroy (pTHX_ struct coro *coro)
		726	{
		727	if (!IN_DESTRUCT)
		728	{
		729	/* restore all saved variables and stuff */
		730	LEAVE_SCOPE (0);
		731	assert (PL_tmps_floor == -1);
		732
		733	/* free all temporaries */
		734	FREETMPS;
		735	assert (PL_tmps_ix == -1);
		736
		737	/* unwind all extra stacks */
		738	POPSTACK_TO (PL_mainstack);
		739
		740	/* unwind main stack */
		741	dounwind (-1);
		742	}
		743
		744	SvREFCNT_dec (GvSV (PL_defgv));
		745	SvREFCNT_dec (GvAV (PL_defgv));
		746	SvREFCNT_dec (GvSV (PL_errgv));
		747	SvREFCNT_dec (PL_defoutgv);
		748	SvREFCNT_dec (PL_rs);
		749	SvREFCNT_dec (GvSV (irsgv));
		750
		751	SvREFCNT_dec (PL_diehook);
		752	SvREFCNT_dec (PL_warnhook);
		753
		754	SvREFCNT_dec (coro->saved_deffh);
		755	SvREFCNT_dec (coro->throw);
		756
		757	coro_destroy_stacks (aTHX);
		758	}
		759
		760	static void
506	free_coro_mortal ()	761	free_coro_mortal (pTHX)
507	{	762	{
508	if (coro_mortal)	763	if (expect_true (coro_mortal))
509	{	764	{
510	SvREFCNT_dec (coro_mortal);	765	SvREFCNT_dec (coro_mortal);
511	coro_mortal = 0;	766	coro_mortal = 0;
512	}	767	}
513	}	768	}
514		769
		770	static int
		771	runops_trace (pTHX)
		772	{
		773	COP *oldcop = 0;
		774	int oldcxix = -2;
		775	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */
		776	coro_cctx *cctx = coro->cctx;
		777
		778	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		779	{
		780	PERL_ASYNC_CHECK ();
		781
		782	if (cctx->flags & CC_TRACE_ALL)
		783	{
		784	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		785	{
		786	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		787	SV bot, top;
		788	AV av = newAV (); / return values */
		789	SV **cb;
		790	dSP;
		791
		792	GV *gv = CvGV (cx->blk_sub.cv);
		793	SV *fullname = sv_2mortal (newSV (0));
		794	if (isGV (gv))
		795	gv_efullname3 (fullname, gv, 0);
		796
		797	bot = PL_stack_base + cx->blk_oldsp + 1;
		798	top = cx->blk_gimme == G_ARRAY ? SP + 1
		799	: cx->blk_gimme == G_SCALAR ? bot + 1
		800	: bot;
		801
		802	av_extend (av, top - bot);
		803	while (bot < top)
		804	av_push (av, SvREFCNT_inc (*bot++));
		805
		806	PL_runops = RUNOPS_DEFAULT;
		807	ENTER;
		808	SAVETMPS;
		809	EXTEND (SP, 3);
		810	PUSHMARK (SP);
		811	PUSHs (&PL_sv_no);
		812	PUSHs (fullname);
		813	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		814	PUTBACK;
		815	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		816	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		817	SPAGAIN;
		818	FREETMPS;
		819	LEAVE;
		820	PL_runops = runops_trace;
		821	}
		822
		823	if (oldcop != PL_curcop)
		824	{
		825	oldcop = PL_curcop;
		826
		827	if (PL_curcop != &PL_compiling)
		828	{
		829	SV **cb;
		830
		831	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		832	{
		833	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		834
		835	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		836	{
		837	runops_proc_t old_runops = PL_runops;
		838	dSP;
		839	GV *gv = CvGV (cx->blk_sub.cv);
		840	SV *fullname = sv_2mortal (newSV (0));
		841
		842	if (isGV (gv))
		843	gv_efullname3 (fullname, gv, 0);
		844
		845	PL_runops = RUNOPS_DEFAULT;
		846	ENTER;
		847	SAVETMPS;
		848	EXTEND (SP, 3);
		849	PUSHMARK (SP);
		850	PUSHs (&PL_sv_yes);
		851	PUSHs (fullname);
		852	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		853	PUTBACK;
		854	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		855	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		856	SPAGAIN;
		857	FREETMPS;
		858	LEAVE;
		859	PL_runops = runops_trace;
		860	}
		861
		862	oldcxix = cxstack_ix;
		863	}
		864
		865	if (cctx->flags & CC_TRACE_LINE)
		866	{
		867	dSP;
		868
		869	PL_runops = RUNOPS_DEFAULT;
		870	ENTER;
		871	SAVETMPS;
		872	EXTEND (SP, 3);
		873	PL_runops = RUNOPS_DEFAULT;
		874	PUSHMARK (SP);
		875	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		876	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		877	PUTBACK;
		878	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		879	if (cb) call_sv (*cb, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		880	SPAGAIN;
		881	FREETMPS;
		882	LEAVE;
		883	PL_runops = runops_trace;
		884	}
		885	}
		886	}
		887	}
		888	}
		889
		890	TAINT_NOT;
		891	return 0;
		892	}
		893
		894	/* inject a fake call to Coro::State::_cctx_init into the execution */
		895	/* _cctx_init should be careful, as it could be called at almost any time */
		896	/* during execution of a perl program */
515	static void NOINLINE	897	static void NOINLINE
516	prepare_cctx (coro_cctx *cctx)	898	cctx_prepare (pTHX_ coro_cctx *cctx)
517	{	899	{
518	dSP;	900	dSP;
519	LOGOP myop;	901	LOGOP myop;
520		902
		903	PL_top_env = &PL_start_env;
		904
		905	if (cctx->flags & CC_TRACE)
		906	PL_runops = runops_trace;
		907
521	Zero (&myop, 1, LOGOP);	908	Zero (&myop, 1, LOGOP);
522	myop.op_next = PL_op;	909	myop.op_next = PL_op;
523	myop.op_flags = OPf_WANT_VOID;	910	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
524
525	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
526		911
527	PUSHMARK (SP);	912	PUSHMARK (SP);
		913	EXTEND (SP, 2);
		914	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
528	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	915	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
529	PUTBACK;	916	PUTBACK;
		917	PL_op = (OP *)&myop;
530	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	918	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
531	SPAGAIN;	919	SPAGAIN;
532	}	920	}
533		921
		922	/*
		923	* this is a _very_ stripped down perl interpreter ;)
		924	*/
534	static void	925	static void
535	coro_run (void *arg)	926	cctx_run (void *arg)
536	{	927	{
		928	dTHX;
		929
537	/* coro_run is the alternative epilogue of transfer() */	930	/* cctx_run is the alternative tail of transfer(), so unlock here. */
538	UNLOCK;	931	UNLOCK;
539		932
		933	/* we now skip the entersub that lead to transfer() */
		934	PL_op = PL_op->op_next;
		935
		936	/* inject a fake subroutine call to cctx_init */
		937	cctx_prepare (aTHX_ (coro_cctx *)arg);
		938
		939	/* somebody or something will hit me for both perl_run and PL_restartop */
		940	PL_restartop = PL_op;
		941	perl_run (PL_curinterp);
		942
540	/*	943	/*
541	* this is a _very_ stripped down perl interpreter ;)	944	* If perl-run returns we assume exit() was being called or the coro
		945	* fell off the end, which seems to be the only valid (non-bug)
		946	* reason for perl_run to return. We try to exit by jumping to the
		947	* bootstrap-time "top" top_env, as we cannot restore the "main"
		948	* coroutine as Coro has no such concept
542	*/	949	*/
543	PL_top_env = &PL_start_env;	950	PL_top_env = main_top_env;
544		951	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
545	/* inject call to cctx_init */
546	prepare_cctx ((coro_cctx *)arg);
547
548	/* somebody will hit me for both perl_run and PL_restartop */
549	perl_run (PL_curinterp);
550
551	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
552	abort ();
553	}	952	}
554		953
555	static coro_cctx *	954	static coro_cctx *
556	cctx_new ()	955	cctx_new ()
557	{	956	{
558	coro_cctx *cctx;	957	coro_cctx *cctx;
		958	void *stack_start;
		959	size_t stack_size;
559		960
560	++cctx_count;	961	++cctx_count;
561		962
562	New (0, cctx, 1, coro_cctx);	963	Newz (0, cctx, 1, coro_cctx);
563		964
564	#if HAVE_MMAP	965	#if HAVE_MMAP
565
566	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	966	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
567	/* mmap suppsedly does allocate-on-write for us */	967	/* mmap supposedly does allocate-on-write for us */
568	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	968	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
569		969
570	if (cctx->sptr == (void *)-1)	970	if (cctx->sptr != (void *)-1)
571	{
572	perror ("FATAL: unable to mmap stack for coroutine");
573	_exit (EXIT_FAILURE);
574	}	971	{
575
576	# if STACKGUARD	972	# if CORO_STACKGUARD
577	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	973	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
578	# endif	974	# endif
		975	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		976	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		977	cctx->flags \|= CC_MAPPED;
		978	}
		979	else
		980	#endif
		981	{
		982	cctx->ssize = coro_stacksize * (long)sizeof (long);
		983	New (0, cctx->sptr, coro_stacksize, long);
579		984
580	#else
581
582	cctx->ssize = STACKSIZE * (long)sizeof (long);
583	New (0, cctx->sptr, STACKSIZE, long);
584
585	if (!cctx->sptr)	985	if (!cctx->sptr)
586	{	986	{
587	perror ("FATAL: unable to malloc stack for coroutine");	987	perror ("FATAL: unable to allocate stack for coroutine");
588	_exit (EXIT_FAILURE);	988	_exit (EXIT_FAILURE);
589	}	989	}
590		990
591	#endif	991	stack_start = cctx->sptr;
		992	stack_size = cctx->ssize;
		993	}
592		994
593	#if USE_VALGRIND	995	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
594	cctx->valgrind_id = VALGRIND_STACK_REGISTER (	996	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
595	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
596	cctx->ssize + (char *)cctx->sptr
597	);
598	#endif
599
600	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
601		997
602	return cctx;	998	return cctx;
603	}	999	}
604		1000
605	static void	1001	static void
606	cctx_free (coro_cctx *cctx)	1002	cctx_destroy (coro_cctx *cctx)
607	{	1003	{
608	if (!cctx)	1004	if (!cctx)
609	return;	1005	return;
610		1006
611	--cctx_count;	1007	--cctx_count;
612		1008
613	#if USE_VALGRIND	1009	#if CORO_USE_VALGRIND
614	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1010	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
615	#endif	1011	#endif
616		1012
617	#if HAVE_MMAP	1013	#if HAVE_MMAP
		1014	if (cctx->flags & CC_MAPPED)
618	munmap (cctx->sptr, cctx->ssize);	1015	munmap (cctx->sptr, cctx->ssize);
619	#else	1016	else
		1017	#endif
620	Safefree (cctx->sptr);	1018	Safefree (cctx->sptr);
621	#endif
622		1019
623	Safefree (cctx);	1020	Safefree (cctx);
624	}	1021	}
625		1022
		1023	/* wether this cctx should be destructed */
		1024	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize \|\| ((cctx)->flags & CC_NOREUSE))
		1025
626	static coro_cctx *	1026	static coro_cctx *
627	cctx_get ()	1027	cctx_get (pTHX)
628	{	1028	{
629	coro_cctx *cctx;	1029	while (expect_true (cctx_first))
630
631	if (cctx_first)
632	{	1030	{
		1031	coro_cctx *cctx = cctx_first;
		1032	cctx_first = cctx->next;
633	--cctx_idle;	1033	--cctx_idle;
634	cctx = cctx_first;	1034
635	cctx_first = cctx->next;	1035	if (expect_true (!CCTX_EXPIRED (cctx)))
636	}	1036	return cctx;
637	else	1037
638	{	1038	cctx_destroy (cctx);
639	cctx = cctx_new ();
640	PL_op = PL_op->op_next;
641	}	1039	}
642		1040
643	return cctx;	1041	return cctx_new ();
644	}	1042	}
645		1043
646	static void	1044	static void
647	cctx_put (coro_cctx *cctx)	1045	cctx_put (coro_cctx *cctx)
648	{	1046	{
		1047	/* free another cctx if overlimit */
		1048	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
		1049	{
		1050	coro_cctx *first = cctx_first;
		1051	cctx_first = first->next;
		1052	--cctx_idle;
		1053
		1054	cctx_destroy (first);
		1055	}
		1056
649	++cctx_idle;	1057	++cctx_idle;
650	cctx->next = cctx_first;	1058	cctx->next = cctx_first;
651	cctx_first = cctx;	1059	cctx_first = cctx;
652	}	1060	}
653		1061
654	/* never call directly, always through the coro_state_transfer global variable */	1062	/ coroutine switching ***************************************************/
		1063
		1064	static void
		1065	transfer_check (pTHX_ struct coro prev, struct coro next)
		1066	{
		1067	if (expect_true (prev != next))
		1068	{
		1069	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
		1070	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1071
		1072	if (expect_false (next->flags & CF_RUNNING))
		1073	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1074
		1075	if (expect_false (next->flags & CF_DESTROYED))
		1076	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1077
		1078	if (
		1079	#if PERL_VERSION_ATLEAST (5,9,0)
		1080	expect_false (PL_parser)
		1081	#else
		1082	expect_false (PL_lex_state != LEX_NOTPARSING)
		1083	#endif
		1084	)
		1085	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1086	}
		1087	}
		1088
		1089	/* always use the TRANSFER macro */
655	static void NOINLINE	1090	static void NOINLINE
656	transfer (struct coro prev, struct coro next, int flags)	1091	transfer (pTHX_ struct coro prev, struct coro next)
657	{	1092	{
658	dSTACKLEVEL;	1093	dSTACKLEVEL;
659		1094
660	/* sometimes transfer is only called to set idle_sp */	1095	/* sometimes transfer is only called to set idle_sp */
661	if (flags == TRANSFER_SET_STACKLEVEL)	1096	if (expect_false (!next))
		1097	{
662	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1098	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		1099	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		1100	}
663	else if (prev != next)	1101	else if (expect_true (prev != next))
664	{	1102	{
665	coro_cctx *prev__cctx;	1103	coro_cctx *prev__cctx;
666		1104
		1105	if (expect_false (prev->flags & CF_NEW))
		1106	{
		1107	/* create a new empty context */
		1108	Newz (0, prev->cctx, 1, coro_cctx);
		1109	prev->flags &= ~CF_NEW;
		1110	prev->flags \|= CF_RUNNING;
		1111	}
		1112
		1113	prev->flags &= ~CF_RUNNING;
		1114	next->flags \|= CF_RUNNING;
		1115
667	LOCK;	1116	LOCK;
668		1117
669	if (next->mainstack)	1118	if (expect_false (next->flags & CF_NEW))
670	{	1119	{
671	/* coroutine already started */	1120	/* need to start coroutine */
672	SAVE (prev, flags);	1121	next->flags &= ~CF_NEW;
673	LOAD (next);	1122	/* first get rid of the old state */
		1123	save_perl (aTHX_ prev);
		1124	/* setup coroutine call */
		1125	coro_setup (aTHX_ next);
674	}	1126	}
675	else	1127	else
676	{	1128	{
677	/* need to start coroutine */	1129	/* coroutine already started */
678	/* first get rid of the old state */	1130	save_perl (aTHX_ prev);
679	SAVE (prev, -1);	1131	load_perl (aTHX_ next);
680	/* setup coroutine call */
681	setup_coro (next);
682	/* need a stack */
683	next->cctx = 0;
684	}	1132	}
685		1133
686	if (!prev->cctx)
687	/* create a new empty context */
688	Newz (0, prev->cctx, 1, coro_cctx);
689
690	prev__cctx = prev->cctx;	1134	prev__cctx = prev->cctx;
691		1135
692	/* possibly "free" the cctx */	1136	/* possibly "free" the cctx */
693	if (prev__cctx->idle_sp == STACKLEVEL)	1137	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
694	{	1138	{
		1139	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		1140	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		1141
		1142	prev->cctx = 0;
		1143
		1144	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1145	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1146	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1147	if (!next->cctx)
		1148	next->cctx = cctx_get (aTHX);
		1149
695	cctx_put (prev__cctx);	1150	cctx_put (prev__cctx);
696	prev->cctx = 0;
697	}	1151	}
698		1152
		1153	++next->usecount;
		1154
699	if (!next->cctx)	1155	if (expect_true (!next->cctx))
700	next->cctx = cctx_get ();	1156	next->cctx = cctx_get (aTHX);
701		1157
702	if (prev__cctx != next->cctx)	1158	if (expect_false (prev__cctx != next->cctx))
703	{	1159	{
704	prev__cctx->top_env = PL_top_env;	1160	prev__cctx->top_env = PL_top_env;
705	PL_top_env = next->cctx->top_env;	1161	PL_top_env = next->cctx->top_env;
706	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1162	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
707	}	1163	}
708		1164
709	free_coro_mortal ();	1165	free_coro_mortal (aTHX);
710
711	UNLOCK;	1166	UNLOCK;
		1167
		1168	if (expect_false (prev->throw \|\| next->throw))
		1169	{
		1170	struct coro *coro = SvSTATE (coro_current);
		1171
		1172	if (coro->throw)
		1173	{
		1174	SV *exception = coro->throw;
		1175	coro->throw = 0;
		1176	sv_setsv (ERRSV, exception);
		1177	croak (0);
		1178	}
		1179	}
712	}	1180	}
713	}	1181	}
714		1182
715	struct transfer_args	1183	struct transfer_args
716	{	1184	{
717	struct coro prev, next;	1185	struct coro prev, next;
718	int flags;
719	};	1186	};
720		1187
721	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	1188	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1189	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
722		1190
		1191	/ high level stuff ******************************************************/
		1192
723	static void	1193	static int
724	coro_state_destroy (struct coro *coro)	1194	coro_state_destroy (pTHX_ struct coro *coro)
725	{	1195	{
726	if (coro->refcnt--)	1196	if (coro->flags & CF_DESTROYED)
727	return;	1197	return 0;
		1198
		1199	coro->flags \|= CF_DESTROYED;
		1200
		1201	if (coro->flags & CF_READY)
		1202	{
		1203	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1204	/* alternative: look through all ready queues and remove the coro */
		1205	LOCK;
		1206	--coro_nready;
		1207	UNLOCK;
		1208	}
		1209	else
		1210	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
728		1211
729	if (coro->mainstack && coro->mainstack != main_mainstack)	1212	if (coro->mainstack && coro->mainstack != main_mainstack)
730	{	1213	{
731	struct coro temp;	1214	struct coro temp;
732		1215
733	SAVE ((&temp), TRANSFER_SAVE_ALL);	1216	if (coro->flags & CF_RUNNING)
734	LOAD (coro);	1217	croak ("FATAL: tried to destroy currently running coroutine");
735		1218
736	coro_destroy_stacks ();	1219	save_perl (aTHX_ &temp);
		1220	load_perl (aTHX_ coro);
737		1221
738	LOAD ((&temp)); /* this will get rid of defsv etc.. */	1222	coro_destroy (aTHX_ coro);
739		1223
		1224	load_perl (aTHX_ &temp);
		1225
740	coro->mainstack = 0;	1226	coro->slot = 0;
741	}	1227	}
742		1228
743	cctx_free (coro->cctx);	1229	cctx_destroy (coro->cctx);
744	SvREFCNT_dec (coro->args);	1230	SvREFCNT_dec (coro->args);
745	Safefree (coro);	1231
		1232	if (coro->next) coro->next->prev = coro->prev;
		1233	if (coro->prev) coro->prev->next = coro->next;
		1234	if (coro == coro_first) coro_first = coro->next;
		1235
		1236	return 1;
746	}	1237	}
747		1238
748	static int	1239	static int
749	coro_state_clear (pTHX_ SV sv, MAGIC mg)	1240	coro_state_free (pTHX_ SV sv, MAGIC mg)
750	{	1241	{
751	struct coro coro = (struct coro )mg->mg_ptr;	1242	struct coro coro = (struct coro )mg->mg_ptr;
752	mg->mg_ptr = 0;	1243	mg->mg_ptr = 0;
753		1244
		1245	coro->hv = 0;
		1246
		1247	if (--coro->refcnt < 0)
		1248	{
754	coro_state_destroy (coro);	1249	coro_state_destroy (aTHX_ coro);
		1250	Safefree (coro);
		1251	}
755		1252
756	return 0;	1253	return 0;
757	}	1254	}
758		1255
759	static int	1256	static int
…		…
766	return 0;	1263	return 0;
767	}	1264	}
768		1265
769	static MGVTBL coro_state_vtbl = {	1266	static MGVTBL coro_state_vtbl = {
770	0, 0, 0, 0,	1267	0, 0, 0, 0,
771	coro_state_clear,	1268	coro_state_free,
772	0,	1269	0,
773	#ifdef MGf_DUP	1270	#ifdef MGf_DUP
774	coro_state_dup,	1271	coro_state_dup,
775	#else	1272	#else
776	# define MGf_DUP 0	1273	# define MGf_DUP 0
777	#endif	1274	#endif
778	};	1275	};
779		1276
780	static struct coro *
781	SvSTATE (SV *coro)
782	{
783	HV *stash;
784	MAGIC *mg;
785
786	if (SvROK (coro))
787	coro = SvRV (coro);
788
789	stash = SvSTASH (coro);
790	if (stash != coro_stash && stash != coro_state_stash)
791	{
792	/* very slow, but rare, check */
793	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
794	croak ("Coro::State object required");
795	}
796
797	mg = SvMAGIC (coro);
798	assert (mg->mg_type == PERL_MAGIC_ext);
799	return (struct coro *)mg->mg_ptr;
800	}
801
802	static void	1277	static void
803	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	1278	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
804	{	1279	{
805	ta->prev = SvSTATE (prev);	1280	ta->prev = SvSTATE (prev_sv);
806	ta->next = SvSTATE (next);	1281	ta->next = SvSTATE (next_sv);
807	ta->flags = flags;	1282	TRANSFER_CHECK (*ta);
808	}	1283	}
809		1284
810	static void	1285	static void
811	api_transfer (SV prev, SV next, int flags)	1286	api_transfer (SV prev_sv, SV next_sv)
812	{	1287	{
813	dTHX;	1288	dTHX;
814	struct transfer_args ta;	1289	struct transfer_args ta;
815		1290
816	prepare_transfer (&ta, prev, next, flags);	1291	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
817	TRANSFER (ta);	1292	TRANSFER (ta);
818	}	1293	}
819		1294
820	/ Coro ******************************************************************/	1295	/ Coro ******************************************************************/
821		1296
822	#define PRIO_MAX 3
823	#define PRIO_HIGH 1
824	#define PRIO_NORMAL 0
825	#define PRIO_LOW -1
826	#define PRIO_IDLE -3
827	#define PRIO_MIN -4
828
829	/* for Coro.pm */
830	static GV coro_current, coro_idle;
831	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
832	static int coro_nready;
833
834	static void	1297	static void
835	coro_enq (SV *sv)	1298	coro_enq (pTHX_ SV *coro_sv)
836	{	1299	{
837	int prio;
838
839	if (SvTYPE (sv) != SVt_PVHV)
840	croak ("Coro::ready tried to enqueue something that is not a coroutine");
841
842	prio = SvSTATE (sv)->prio;
843
844	av_push (coro_ready [prio - PRIO_MIN], sv);	1300	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
845	coro_nready++;
846	}	1301	}
847		1302
848	static SV *	1303	static SV *
849	coro_deq (int min_prio)	1304	coro_deq (pTHX_ int min_prio)
850	{	1305	{
851	int prio = PRIO_MAX - PRIO_MIN;	1306	int prio = PRIO_MAX - PRIO_MIN;
852		1307
853	min_prio -= PRIO_MIN;	1308	min_prio -= PRIO_MIN;
854	if (min_prio < 0)	1309	if (min_prio < 0)
855	min_prio = 0;	1310	min_prio = 0;
856		1311
857	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1312	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
858	if (AvFILLp (coro_ready [prio]) >= 0)	1313	if (AvFILLp (coro_ready [prio]) >= 0)
859	{
860	coro_nready--;
861	return av_shift (coro_ready [prio]);	1314	return av_shift (coro_ready [prio]);
862	}
863		1315
864	return 0;	1316	return 0;
865	}	1317	}
866		1318
867	static void	1319	static int
868	api_ready (SV *coro)	1320	api_ready (SV *coro_sv)
869	{	1321	{
870	dTHX;	1322	dTHX;
		1323	struct coro *coro;
871		1324
872	if (SvROK (coro))	1325	if (SvROK (coro_sv))
873	coro = SvRV (coro);	1326	coro_sv = SvRV (coro_sv);
		1327
		1328	coro = SvSTATE (coro_sv);
		1329
		1330	if (coro->flags & CF_READY)
		1331	return 0;
		1332
		1333	coro->flags \|= CF_READY;
874		1334
875	LOCK;	1335	LOCK;
876	coro_enq (SvREFCNT_inc (coro));	1336	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1337	++coro_nready;
877	UNLOCK;	1338	UNLOCK;
878	}
879		1339
		1340	return 1;
		1341	}
		1342
880	static void	1343	static int
		1344	api_is_ready (SV *coro_sv)
		1345	{
		1346	dTHX;
		1347	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		1348	}
		1349
		1350	static void
881	prepare_schedule (struct transfer_args *ta)	1351	prepare_schedule (pTHX_ struct transfer_args *ta)
882	{	1352	{
883	SV current, prev, *next;	1353	SV prev_sv, next_sv;
884
885	current = GvSV (coro_current);
886		1354
887	for (;;)	1355	for (;;)
888	{	1356	{
889	LOCK;	1357	LOCK;
890	next = coro_deq (PRIO_MIN);	1358	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1359
		1360	/* nothing to schedule: call the idle handler */
		1361	if (expect_false (!next_sv))
		1362	{
		1363	dSP;
		1364	UNLOCK;
		1365
		1366	ENTER;
		1367	SAVETMPS;
		1368
		1369	PUSHMARK (SP);
		1370	PUTBACK;
		1371	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1372
		1373	FREETMPS;
		1374	LEAVE;
		1375	continue;
		1376	}
		1377
		1378	ta->next = SvSTATE (next_sv);
		1379
		1380	/* cannot transfer to destroyed coros, skip and look for next */
		1381	if (expect_false (ta->next->flags & CF_DESTROYED))
		1382	{
		1383	UNLOCK;
		1384	SvREFCNT_dec (next_sv);
		1385	/* coro_nready is already taken care of by destroy */
		1386	continue;
		1387	}
		1388
		1389	--coro_nready;
891	UNLOCK;	1390	UNLOCK;
892
893	if (next)
894	break;	1391	break;
895
896	{
897	dSP;
898
899	ENTER;
900	SAVETMPS;
901
902	PUSHMARK (SP);
903	PUTBACK;
904	call_sv (GvSV (coro_idle), G_DISCARD);
905
906	FREETMPS;
907	LEAVE;
908	}	1392	}
909	}
910
911	prev = SvRV (current);
912	SvRV (current) = next;
913		1393
914	/* free this only after the transfer */	1394	/* free this only after the transfer */
		1395	prev_sv = SvRV (coro_current);
		1396	ta->prev = SvSTATE (prev_sv);
		1397	TRANSFER_CHECK (*ta);
		1398	assert (ta->next->flags & CF_READY);
		1399	ta->next->flags &= ~CF_READY;
		1400	SvRV_set (coro_current, next_sv);
		1401
915	LOCK;	1402	LOCK;
916	free_coro_mortal ();	1403	free_coro_mortal (aTHX);
		1404	coro_mortal = prev_sv;
917	UNLOCK;	1405	UNLOCK;
918	coro_mortal = prev;
919
920	ta->prev = SvSTATE (prev);
921	ta->next = SvSTATE (next);
922	ta->flags = TRANSFER_SAVE_ALL;
923	}	1406	}
924		1407
925	static void	1408	static void
926	prepare_cede (struct transfer_args *ta)	1409	prepare_cede (pTHX_ struct transfer_args *ta)
927	{	1410	{
928	LOCK;	1411	api_ready (coro_current);
929	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
930	UNLOCK;
931
932	prepare_schedule (ta);	1412	prepare_schedule (aTHX_ ta);
		1413	}
		1414
		1415	static int
		1416	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1417	{
		1418	if (coro_nready)
		1419	{
		1420	SV *prev = SvRV (coro_current);
		1421	prepare_schedule (aTHX_ ta);
		1422	api_ready (prev);
		1423	return 1;
		1424	}
		1425	else
		1426	return 0;
933	}	1427	}
934		1428
935	static void	1429	static void
936	api_schedule (void)	1430	api_schedule (void)
937	{	1431	{
938	dTHX;	1432	dTHX;
939	struct transfer_args ta;	1433	struct transfer_args ta;
940		1434
941	prepare_schedule (&ta);	1435	prepare_schedule (aTHX_ &ta);
942	TRANSFER (ta);	1436	TRANSFER (ta);
943	}	1437	}
944		1438
945	static void	1439	static int
946	api_cede (void)	1440	api_cede (void)
947	{	1441	{
948	dTHX;	1442	dTHX;
949	struct transfer_args ta;	1443	struct transfer_args ta;
950		1444
951	prepare_cede (&ta);	1445	prepare_cede (aTHX_ &ta);
		1446
		1447	if (expect_true (ta.prev != ta.next))
		1448	{
952	TRANSFER (ta);	1449	TRANSFER (ta);
		1450	return 1;
		1451	}
		1452	else
		1453	return 0;
953	}	1454	}
954		1455
		1456	static int
		1457	api_cede_notself (void)
		1458	{
		1459	dTHX;
		1460	struct transfer_args ta;
		1461
		1462	if (prepare_cede_notself (aTHX_ &ta))
		1463	{
		1464	TRANSFER (ta);
		1465	return 1;
		1466	}
		1467	else
		1468	return 0;
		1469	}
		1470
		1471	static void
		1472	api_trace (SV *coro_sv, int flags)
		1473	{
		1474	dTHX;
		1475	struct coro *coro = SvSTATE (coro_sv);
		1476
		1477	if (flags & CC_TRACE)
		1478	{
		1479	if (!coro->cctx)
		1480	coro->cctx = cctx_new ();
		1481	else if (!(coro->cctx->flags & CC_TRACE))
		1482	croak ("cannot enable tracing on coroutine with custom stack");
		1483
		1484	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
		1485	}
		1486	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1487	{
		1488	coro->cctx->flags &= ~(CC_TRACE \| CC_TRACE_ALL);
		1489
		1490	if (coro->flags & CF_RUNNING)
		1491	PL_runops = RUNOPS_DEFAULT;
		1492	else
		1493	coro->slot->runops = RUNOPS_DEFAULT;
		1494	}
		1495	}
		1496
955	MODULE = Coro::State PACKAGE = Coro::State	1497	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
956		1498
957	PROTOTYPES: DISABLE	1499	PROTOTYPES: DISABLE
958		1500
959	BOOT:	1501	BOOT:
960	{	1502	{
961	#ifdef USE_ITHREADS	1503	#ifdef USE_ITHREADS
962	MUTEX_INIT (&coro_mutex);	1504	MUTEX_INIT (&coro_mutex);
963	#endif	1505	#endif
964	BOOT_PAGESIZE;	1506	BOOT_PAGESIZE;
965		1507
		1508	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
		1509	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
		1510
		1511	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1512	sv_diehook = coro_get_sv (aTHX_ "Coro::State::DIEHOOK" , TRUE);
		1513	sv_warnhook = coro_get_sv (aTHX_ "Coro::State::WARNHOOK", TRUE);
		1514
		1515	if (!PL_diehook ) hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
		1516	if (!PL_warnhook) hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
		1517
966	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1518	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
967		1519
968	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1520	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
969	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1521	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
970	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1522	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1523	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
971		1524
972	main_mainstack = PL_mainstack;	1525	main_mainstack = PL_mainstack;
		1526	main_top_env = PL_top_env;
		1527
		1528	while (main_top_env->je_prev)
		1529	main_top_env = main_top_env->je_prev;
973		1530
974	coroapi.ver = CORO_API_VERSION;	1531	coroapi.ver = CORO_API_VERSION;
		1532	coroapi.rev = CORO_API_REVISION;
975	coroapi.transfer = api_transfer;	1533	coroapi.transfer = api_transfer;
976		1534
977	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1535	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
978	}	1536	}
979		1537
…		…
984	struct coro *coro;	1542	struct coro *coro;
985	HV *hv;	1543	HV *hv;
986	int i;	1544	int i;
987		1545
988	Newz (0, coro, 1, struct coro);	1546	Newz (0, coro, 1, struct coro);
989	coro->args = newAV ();	1547	coro->args = newAV ();
		1548	coro->flags = CF_NEW;
990		1549
		1550	if (coro_first) coro_first->prev = coro;
		1551	coro->next = coro_first;
		1552	coro_first = coro;
		1553
991	hv = newHV ();	1554	coro->hv = hv = newHV ();
992	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1555	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
993	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1556	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
994		1557
		1558	av_extend (coro->args, items - 1);
995	for (i = 1; i < items; i++)	1559	for (i = 1; i < items; i++)
996	av_push (coro->args, newSVsv (ST (i)));	1560	av_push (coro->args, newSVsv (ST (i)));
997	}	1561	}
998	OUTPUT:	1562	OUTPUT:
999	RETVAL	1563	RETVAL
1000		1564
		1565	# these not obviously related functions are all rolled into the same xs
		1566	# function to increase chances that they all will call transfer with the same
		1567	# stack offset
1001	void	1568	void
1002	_set_stacklevel (...)	1569	_set_stacklevel (...)
1003	ALIAS:	1570	ALIAS:
1004	Coro::State::transfer = 1	1571	Coro::State::transfer = 1
1005	Coro::schedule = 2	1572	Coro::schedule = 2
1006	Coro::cede = 3	1573	Coro::cede = 3
1007	Coro::Cont::yield = 4	1574	Coro::cede_notself = 4
1008	CODE:	1575	CODE:
1009	{	1576	{
1010	struct transfer_args ta;	1577	struct transfer_args ta;
1011		1578
1012	switch (ix)	1579	switch (ix)
1013	{	1580	{
1014	case 0:	1581	case 0:
1015	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1582	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1016	ta.next = 0;	1583	ta.next = 0;
1017	ta.flags = TRANSFER_SET_STACKLEVEL;
1018	break;	1584	break;
1019		1585
1020	case 1:	1586	case 1:
1021	if (items != 3)	1587	if (items != 2)
1022	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1588	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1023		1589
1024	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1590	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1025	break;	1591	break;
1026		1592
1027	case 2:	1593	case 2:
1028	prepare_schedule (&ta);	1594	prepare_schedule (aTHX_ &ta);
1029	break;	1595	break;
1030		1596
1031	case 3:	1597	case 3:
1032	prepare_cede (&ta);	1598	prepare_cede (aTHX_ &ta);
1033	break;	1599	break;
1034		1600
1035	case 4:	1601	case 4:
1036	{	1602	if (!prepare_cede_notself (aTHX_ &ta))
1037	SV *yieldstack;	1603	XSRETURN_EMPTY;
1038	SV *sv;
1039	AV *defav = GvAV (PL_defgv);
1040		1604
1041	yieldstack = *hv_fetch (
1042	(HV *)SvRV (GvSV (coro_current)),
1043	"yieldstack", sizeof ("yieldstack") - 1,
1044	0
1045	);
1046
1047	/* set up @_ -- ugly */
1048	av_clear (defav);
1049	av_fill (defav, items - 1);
1050	while (items--)
1051	av_store (defav, items, SvREFCNT_inc (ST(items)));
1052
1053	sv = av_pop ((AV *)SvRV (yieldstack));
1054	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1055	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1056	ta.flags = 0;
1057	SvREFCNT_dec (sv);
1058	}
1059	break;	1605	break;
1060
1061	}	1606	}
1062		1607
		1608	BARRIER;
		1609	PUTBACK;
1063	TRANSFER (ta);	1610	TRANSFER (ta);
		1611	SPAGAIN; /* might be the sp of a different coroutine now */
		1612	/* be extra careful not to ever do anything after TRANSFER */
1064	}	1613	}
1065		1614
1066	void	1615	bool
1067	_clone_state_from (SV dst, SV src)	1616	_destroy (SV *coro_sv)
1068	CODE:	1617	CODE:
1069	{	1618	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1070	struct coro *coro_src = SvSTATE (src);	1619	OUTPUT:
1071		1620	RETVAL
1072	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1073
1074	++coro_src->refcnt;
1075	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1076	}
1077		1621
1078	void	1622	void
1079	_exit (code)	1623	_exit (code)
1080	int code	1624	int code
1081	PROTOTYPE: $	1625	PROTOTYPE: $
1082	CODE:	1626	CODE:
1083	_exit (code);	1627	_exit (code);
1084		1628
1085	int	1629	int
		1630	cctx_stacksize (int new_stacksize = 0)
		1631	CODE:
		1632	RETVAL = coro_stacksize;
		1633	if (new_stacksize)
		1634	coro_stacksize = new_stacksize;
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638	int
1086	cctx_count ()	1639	cctx_count ()
1087	CODE:	1640	CODE:
1088	RETVAL = cctx_count;	1641	RETVAL = cctx_count;
1089	OUTPUT:	1642	OUTPUT:
1090	RETVAL	1643	RETVAL
…		…
1094	CODE:	1647	CODE:
1095	RETVAL = cctx_idle;	1648	RETVAL = cctx_idle;
1096	OUTPUT:	1649	OUTPUT:
1097	RETVAL	1650	RETVAL
1098		1651
		1652	void
		1653	list ()
		1654	PPCODE:
		1655	{
		1656	struct coro *coro;
		1657	for (coro = coro_first; coro; coro = coro->next)
		1658	if (coro->hv)
		1659	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1660	}
		1661
		1662	void
		1663	call (Coro::State coro, SV *coderef)
		1664	ALIAS:
		1665	eval = 1
		1666	CODE:
		1667	{
		1668	if (coro->mainstack)
		1669	{
		1670	struct coro temp;
		1671
		1672	if (!(coro->flags & CF_RUNNING))
		1673	{
		1674	save_perl (aTHX_ &temp);
		1675	load_perl (aTHX_ coro);
		1676	}
		1677
		1678	{
		1679	dSP;
		1680	ENTER;
		1681	SAVETMPS;
		1682	PUTBACK;
		1683	PUSHSTACK;
		1684	PUSHMARK (SP);
		1685
		1686	if (ix)
		1687	eval_sv (coderef, 0);
		1688	else
		1689	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1690
		1691	POPSTACK;
		1692	SPAGAIN;
		1693	FREETMPS;
		1694	LEAVE;
		1695	PUTBACK;
		1696	}
		1697
		1698	if (!(coro->flags & CF_RUNNING))
		1699	{
		1700	save_perl (aTHX_ coro);
		1701	load_perl (aTHX_ &temp);
		1702	}
		1703	}
		1704	}
		1705
		1706	SV *
		1707	is_ready (Coro::State coro)
		1708	PROTOTYPE: $
		1709	ALIAS:
		1710	is_ready = CF_READY
		1711	is_running = CF_RUNNING
		1712	is_new = CF_NEW
		1713	is_destroyed = CF_DESTROYED
		1714	CODE:
		1715	RETVAL = boolSV (coro->flags & ix);
		1716	OUTPUT:
		1717	RETVAL
		1718
		1719	void
		1720	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		1721
		1722	SV *
		1723	has_stack (Coro::State coro)
		1724	PROTOTYPE: $
		1725	CODE:
		1726	RETVAL = boolSV (!!coro->cctx);
		1727	OUTPUT:
		1728	RETVAL
		1729
		1730	int
		1731	is_traced (Coro::State coro)
		1732	PROTOTYPE: $
		1733	CODE:
		1734	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1735	OUTPUT:
		1736	RETVAL
		1737
		1738	IV
		1739	rss (Coro::State coro)
		1740	PROTOTYPE: $
		1741	ALIAS:
		1742	usecount = 1
		1743	CODE:
		1744	switch (ix)
		1745	{
		1746	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1747	case 1: RETVAL = coro->usecount; break;
		1748	}
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752
1099	MODULE = Coro::State PACKAGE = Coro	1753	MODULE = Coro::State PACKAGE = Coro
1100		1754
1101	BOOT:	1755	BOOT:
1102	{	1756	{
1103	int i;	1757	int i;
1104		1758
		1759	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		1760	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
		1761	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		1762
		1763	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
		1764	SvREADONLY_on (coro_current);
		1765
1105	coro_stash = gv_stashpv ("Coro", TRUE);	1766	coro_stash = gv_stashpv ("Coro", TRUE);
1106		1767
1107	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1768	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1108	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1769	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1109	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1770	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1110	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1771	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1111	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1772	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1112	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1773	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1113		1774
1114	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1115	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1116
1117	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1775	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1118	coro_ready[i] = newAV ();	1776	coro_ready[i] = newAV ();
1119		1777
1120	{	1778	{
1121	SV *sv = perl_get_sv("Coro::API", 1);	1779	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1780	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1122		1781
1123	coroapi.schedule = api_schedule;	1782	coroapi.schedule = api_schedule;
1124	coroapi.cede = api_cede;	1783	coroapi.cede = api_cede;
		1784	coroapi.cede_notself = api_cede_notself;
1125	coroapi.ready = api_ready;	1785	coroapi.ready = api_ready;
		1786	coroapi.is_ready = api_is_ready;
1126	coroapi.nready = &coro_nready;	1787	coroapi.nready = &coro_nready;
1127	coroapi.current = coro_current;	1788	coroapi.current = coro_current;
1128		1789
1129	GCoroAPI = &coroapi;	1790	GCoroAPI = &coroapi;
1130	sv_setiv (sv, (IV)&coroapi);	1791	sv_setiv (sv, (IV)&coroapi);
1131	SvREADONLY_on (sv);	1792	SvREADONLY_on (sv);
1132	}	1793	}
1133	}	1794	}
		1795
		1796	void
		1797	_set_current (SV *current)
		1798	PROTOTYPE: $
		1799	CODE:
		1800	SvREFCNT_dec (SvRV (coro_current));
		1801	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1134		1802
1135	int	1803	int
1136	prio (Coro::State coro, int newprio = 0)	1804	prio (Coro::State coro, int newprio = 0)
1137	ALIAS:	1805	ALIAS:
1138	nice = 1	1806	nice = 1
…		…
1141	RETVAL = coro->prio;	1809	RETVAL = coro->prio;
1142		1810
1143	if (items > 1)	1811	if (items > 1)
1144	{	1812	{
1145	if (ix)	1813	if (ix)
1146	newprio += coro->prio;	1814	newprio = coro->prio - newprio;
1147		1815
1148	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1816	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1149	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1817	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1150		1818
1151	coro->prio = newprio;	1819	coro->prio = newprio;
1152	}	1820	}
1153	}	1821	}
		1822	OUTPUT:
		1823	RETVAL
1154		1824
1155	void	1825	SV *
1156	ready (SV *self)	1826	ready (SV *self)
1157	PROTOTYPE: $	1827	PROTOTYPE: $
1158	CODE:	1828	CODE:
1159	api_ready (self);	1829	RETVAL = boolSV (api_ready (self));
		1830	OUTPUT:
		1831	RETVAL
1160		1832
1161	int	1833	int
1162	nready (...)	1834	nready (...)
1163	PROTOTYPE:	1835	PROTOTYPE:
1164	CODE:	1836	CODE:
1165	RETVAL = coro_nready;	1837	RETVAL = coro_nready;
1166	OUTPUT:	1838	OUTPUT:
1167	RETVAL	1839	RETVAL
1168		1840
		1841	void
		1842	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1843	PROTOTYPE: $;$
		1844	CODE:
		1845	SvREFCNT_dec (self->throw);
		1846	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1847
		1848	# for async_pool speedup
		1849	void
		1850	_pool_1 (SV *cb)
		1851	CODE:
		1852	{
		1853	struct coro *coro = SvSTATE (coro_current);
		1854	HV hv = (HV )SvRV (coro_current);
		1855	AV *defav = GvAV (PL_defgv);
		1856	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1857	AV *invoke_av;
		1858	int i, len;
		1859
		1860	if (!invoke)
		1861	croak ("\3async_pool terminate\2\n");
		1862
		1863	SvREFCNT_dec (coro->saved_deffh);
		1864	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1865
		1866	hv_store (hv, "desc", sizeof ("desc") - 1,
		1867	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1868
		1869	invoke_av = (AV *)SvRV (invoke);
		1870	len = av_len (invoke_av);
		1871
		1872	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1873
		1874	if (len > 0)
		1875	{
		1876	av_fill (defav, len - 1);
		1877	for (i = 0; i < len; ++i)
		1878	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1879	}
		1880
		1881	SvREFCNT_dec (invoke);
		1882	}
		1883
		1884	void
		1885	_pool_2 (SV *cb)
		1886	CODE:
		1887	{
		1888	struct coro *coro = SvSTATE (coro_current);
		1889
		1890	sv_setsv (cb, &PL_sv_undef);
		1891
		1892	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
		1893	coro->saved_deffh = 0;
		1894
		1895	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1896	\|\| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1897	croak ("\3async_pool terminate\2\n");
		1898
		1899	av_clear (GvAV (PL_defgv));
		1900	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1901	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1902
		1903	coro->prio = 0;
		1904
		1905	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1906	api_trace (coro_current, 0);
		1907
		1908	av_push (av_async_pool, newSVsv (coro_current));
		1909	}
		1910
		1911
1169	MODULE = Coro::State PACKAGE = Coro::AIO	1912	MODULE = Coro::State PACKAGE = Coro::AIO
1170		1913
1171	SV *	1914	SV *
1172	_get_state ()	1915	_get_state ()
1173	CODE:	1916	CODE:
1174	{	1917	{
1175	struct {	1918	struct io_state *data;
1176	int errorno;
1177	int laststype;
1178	int laststatval;
1179	Stat_t statcache;
1180	} data;
1181		1919
		1920	RETVAL = newSV (sizeof (struct io_state));
		1921	data = (struct io_state *)SvPVX (RETVAL);
		1922	SvCUR_set (RETVAL, sizeof (struct io_state));
		1923	SvPOK_only (RETVAL);
		1924
1182	data.errorno = errno;	1925	data->errorno = errno;
1183	data.laststype = PL_laststype;	1926	data->laststype = PL_laststype;
1184	data.laststatval = PL_laststatval;	1927	data->laststatval = PL_laststatval;
1185	data.statcache = PL_statcache;	1928	data->statcache = PL_statcache;
1186
1187	RETVAL = newSVpvn ((char *)&data, sizeof data);
1188	}	1929	}
1189	OUTPUT:	1930	OUTPUT:
1190	RETVAL	1931	RETVAL
1191		1932
1192	void	1933	void
1193	_set_state (char *data_)	1934	_set_state (char *data_)
1194	PROTOTYPE: $	1935	PROTOTYPE: $
1195	CODE:	1936	CODE:
1196	{	1937	{
1197	struct {	1938	struct io_state data = (void )data_;
1198	int errorno;
1199	int laststype;
1200	int laststatval;
1201	Stat_t statcache;
1202	} data = (void )data_;
1203		1939
1204	errno = data->errorno;	1940	errno = data->errorno;
1205	PL_laststype = data->laststype;	1941	PL_laststype = data->laststype;
1206	PL_laststatval = data->laststatval;	1942	PL_laststatval = data->laststatval;
1207	PL_statcache = data->statcache;	1943	PL_statcache = data->statcache;
1208	}	1944	}
		1945

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Comparing Coro/Coro/State.xs (file contents): Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs. Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.108 by root, Mon Nov 27 18:15:47 2006 UTC vs.
Revision 1.213 by root, Thu Oct 11 00:40:48 2007 UTC