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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

…		…
1	#define PERL_NO_GET_CONTEXT
2
3	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
4		2
5	#include "EXTERN.h"	3	#include "EXTERN.h"
6	#include "perl.h"	4	#include "perl.h"
7	#include "XSUB.h"	5	#include "XSUB.h"
8		6
9	#include "patchlevel.h"	7	#include "patchlevel.h"
10		8
11	#if PERL_VERSION < 6	9	#include <stdio.h>
		10	#include <errno.h>
		11	#include <assert.h>
		12
		13	#ifdef HAVE_MMAP
		14	# include <unistd.h>
		15	# include <sys/mman.h>
		16	# ifndef MAP_ANONYMOUS
		17	# ifdef MAP_ANON
		18	# define MAP_ANONYMOUS MAP_ANON
		19	# else
		20	# undef HAVE_MMAP
		21	# endif
		22	# endif
		23	# include <limits.h>
		24	# ifndef PAGESIZE
		25	# define PAGESIZE pagesize
		26	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		27	static long pagesize;
		28	# else
		29	# define BOOT_PAGESIZE (void)0
		30	# endif
		31	#else
		32	# define PAGESIZE 0
		33	# define BOOT_PAGESIZE (void)0
		34	#endif
		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
12	# ifndef PL_ppaddr	50	# ifndef PL_ppaddr
13	# define PL_ppaddr ppaddr	51	# define PL_ppaddr ppaddr
14	# endif	52	# endif
15	# ifndef call_sv	53	# ifndef call_sv
16	# define call_sv perl_call_sv	54	# define call_sv perl_call_sv
27	# ifndef IS_PADCONST	65	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	66	# define IS_PADCONST(v) 0
29	# endif	67	# endif
30	#endif	68	#endif
31		69
32	#include <stdio.h>	70	/* 5.8.7 */
33	#include <errno.h>	71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
34		74
35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
36	# undef STACKGUARD	76	# undef STACKGUARD
37	#endif	77	#endif
38		78
39	#ifndef STACKGUARD	79	#ifndef STACKGUARD
40	# define STACKGUARD 0	80	# define STACKGUARD 0
41	#endif	81	#endif
42		82
43	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
44	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
45	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
46	# ifndef MAP_ANONYMOUS
47	# ifdef MAP_ANON
48	# define MAP_ANONYMOUS MAP_ANON
49	# else
50	# undef HAVE_MMAP
51	# endif
52	# endif
53	# include <limits.h>
54	# ifndef PAGESIZE
55	# define PAGESIZE pagesize
56	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
57	static long pagesize;
58	# else
59	# define BOOT_PAGESIZE
60	# endif
61	#endif	86	#endif
62		87
63	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
64	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
65	* and should be unique. */	90	* and should be unique. */
66	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
67	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
68		93
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		95
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		99	#else
		100	# define attribute(x)
		101	# define BARRIER
		102	#endif
		103
		104	#define NOINLINE attribute ((noinline))
72		105
73	#include "CoroAPI.h"	106	#include "CoroAPI.h"
74
75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
76		107
77	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
78	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
81	#else	112	#else
82	# define LOCK (void)0	113	# define LOCK (void)0
83	# define UNLOCK (void)0	114	# define UNLOCK (void)0
84	#endif	115	#endif
85		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
86	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
87	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
88	static HV coro_state_stash, coro_stash;	127	static HV coro_state_stash, coro_stash;
89	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
90		129
		130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
91	/* this is a structure representing a c-level coroutine */	133	/* this is a structure representing a c-level coroutine */
92	typedef struct coro_stack {	134	typedef struct coro_cctx {
93	struct coro_stack *next;	135	struct coro_cctx *next;
94		136
95	void idle_sp; / original stacklevel when coroutine was created */	137	/* the stack */
96	void *sptr;	138	void *sptr;
97	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
98		140
99	/* cpu state */	141	/* cpu state */
		142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
		144	JMPENV *top_env;
100	coro_context cctx;	145	coro_context cctx;
101	JMPENV *top_env;
102	} coro_stack;
103		146
104	/* the (fake) coro_stack representing the main program */	147	int inuse;
105	static coro_stack *main_stack;	148
		149	#if USE_VALGRIND
		150	int valgrind_id;
		151	#endif
		152	} coro_cctx;
		153
		154	enum {
		155	CF_RUNNING = 0x0001, /* coroutine is running */
		156	CF_READY = 0x0002, /* coroutine is ready */
		157	CF_NEW = 0x0004, /* ahs never been switched to */
		158	};
106		159
107	/* this is a structure representing a perl-level coroutine */	160	/* this is a structure representing a perl-level coroutine */
108	struct coro {	161	struct coro {
109	/* the c coroutine allocated to this perl coroutine, if any */	162	/* the c coroutine allocated to this perl coroutine, if any */
110	coro_stack *stack;	163	coro_cctx *cctx;
111		164
112	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
113	AV *args;	166	AV *args;
114	int refcnt;	167	int refcnt;
		168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
115		170
116	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
117	AV *defav;	172	AV defav; / @_ */
118	SV *defsv;	173	SV defsv; / $_ */
119	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
120		177
121	/* saved global state not related to stacks */	178	#define VAR(name,type) type name;
122	U8 dowarn;	179	# include "state.h"
123	I32 in_eval;	180	#undef VAR
124
125	/* the stacks and related info (callchain etc..) */
126	PERL_SI *curstackinfo;
127	AV *curstack;
128	AV *mainstack;
129	SV **stack_sp;
130	OP *op;
131	SV **curpad;
132	AV *comppad;
133	CV *compcv;
134	SV **stack_base;
135	SV **stack_max;
136	SV **tmps_stack;
137	I32 tmps_floor;
138	I32 tmps_ix;
139	I32 tmps_max;
140	I32 *markstack;
141	I32 *markstack_ptr;
142	I32 *markstack_max;
143	I32 *scopestack;
144	I32 scopestack_ix;
145	I32 scopestack_max;
146	ANY *savestack;
147	I32 savestack_ix;
148	I32 savestack_max;
149	OP **retstack;
150	I32 retstack_ix;
151	I32 retstack_max;
152	PMOP *curpm;
153	COP *curcop;
154		181
155	/* coro process data */	182	/* coro process data */
156	int prio;	183	int prio;
157	};	184	};
158		185
159	typedef struct coro *Coro__State;	186	typedef struct coro *Coro__State;
160	typedef struct coro *Coro__State_or_hashref;	187	typedef struct coro *Coro__State_or_hashref;
161		188
162	static AV *	189	static AV *
163	coro_clone_padlist (pTHX_ CV *cv)	190	coro_clone_padlist (CV *cv)
164	{	191	{
165	AV *padlist = CvPADLIST (cv);	192	AV *padlist = CvPADLIST (cv);
166	AV newpadlist, newpad;	193	AV newpadlist, newpad;
167		194
168	newpadlist = newAV ();	195	newpadlist = newAV ();
169	AvREAL_off (newpadlist);	196	AvREAL_off (newpadlist);
170	#if PERL_VERSION < 9	197	#if PERL_VERSION_ATLEAST (5,9,0)
		198	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		199	#else
171	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	200	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
172	#else
173	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
174	#endif	201	#endif
175	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	202	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176	--AvFILLp (padlist);	203	--AvFILLp (padlist);
177		204
178	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	205	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
…		…
180		207
181	return newpadlist;	208	return newpadlist;
182	}	209	}
183		210
184	static void	211	static void
185	free_padlist (pTHX_ AV *padlist)	212	free_padlist (AV *padlist)
186	{	213	{
187	/* may be during global destruction */	214	/* may be during global destruction */
188	if (SvREFCNT (padlist))	215	if (SvREFCNT (padlist))
189	{	216	{
190	I32 i = AvFILLp (padlist);	217	I32 i = AvFILLp (padlist);
…		…
211	AV *padlist;	238	AV *padlist;
212	AV av = (AV )mg->mg_obj;	239	AV av = (AV )mg->mg_obj;
213		240
214	/* casting is fun. */	241	/* casting is fun. */
215	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	242	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
216	free_padlist (aTHX_ padlist);	243	free_padlist (padlist);
217		244
218	SvREFCNT_dec (av);	245	SvREFCNT_dec (av);
219		246
220	return 0;	247	return 0;
221	}	248	}
222		249
223	#define PERL_MAGIC_coro PERL_MAGIC_ext	250	#define PERL_MAGIC_coro PERL_MAGIC_ext
224		251
225	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	252	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
226		253
		254	#define CORO_MAGIC(cv) \
		255	SvMAGIC (cv) \
		256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		257	? SvMAGIC (cv) \
		258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		259	: 0
		260
227	/* the next two functions merely cache the padlists */	261	/* the next two functions merely cache the padlists */
228	static void	262	static void
229	get_padlist (pTHX_ CV *cv)	263	get_padlist (CV *cv)
230	{	264	{
231	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	265	MAGIC *mg = CORO_MAGIC (cv);
		266	AV *av;
232		267
233	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
234	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
235	else	270	else
236	{	271	{
237	#if 0	272	#if PREFER_PERL_FUNCTIONS
238	/* this should work - but it doesn't :( */	273	/* this is probably cleaner, but also slower? */
239	CV *cp = Perl_cv_clone (aTHX_ cv);	274	CV *cp = Perl_cv_clone (cv);
240	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
241	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
242	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
243	#else	278	#else
244	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	279	CvPADLIST (cv) = coro_clone_padlist (cv);
245	#endif	280	#endif
246	}	281	}
247	}	282	}
248		283
249	static void	284	static void
250	put_padlist (pTHX_ CV *cv)	285	put_padlist (CV *cv)
251	{	286	{
252	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	287	MAGIC *mg = CORO_MAGIC (cv);
		288	AV *av;
253		289
254	if (!mg)	290	if (!mg)
255	{	291	{
256	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	292	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
257	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	293	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
258	mg->mg_virtual = &vtbl_coro;	294	mg->mg_virtual = &vtbl_coro;
259	mg->mg_obj = (SV *)newAV ();	295	mg->mg_obj = (SV *)newAV ();
260	}	296	}
261		297
262	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	298	av = (AV *)mg->mg_obj;
		299
		300	if (AvFILLp (av) >= AvMAX (av))
		301	av_extend (av, AvMAX (av) + 1);
		302
		303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
263	}	304	}
264		305
265	#define SB do {	306	#define SB do {
266	#define SE } while (0)	307	#define SE } while (0)
267		308
268	#define LOAD(state) load_state(aTHX_ (state));
269	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
270
271	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
272		310
273	static void	311	static void
274	load_state(pTHX_ Coro__State c)	312	load_perl (Coro__State c)
275	{	313	{
276	PL_dowarn = c->dowarn;	314	#define VAR(name,type) PL_ ## name = c->name;
277	PL_in_eval = c->in_eval;	315	# include "state.h"
278		316	#undef VAR
279	PL_curstackinfo = c->curstackinfo;
280	PL_curstack = c->curstack;
281	PL_mainstack = c->mainstack;
282	PL_stack_sp = c->stack_sp;
283	PL_op = c->op;
284	PL_curpad = c->curpad;
285	PL_comppad = c->comppad;
286	PL_compcv = c->compcv;
287	PL_stack_base = c->stack_base;
288	PL_stack_max = c->stack_max;
289	PL_tmps_stack = c->tmps_stack;
290	PL_tmps_floor = c->tmps_floor;
291	PL_tmps_ix = c->tmps_ix;
292	PL_tmps_max = c->tmps_max;
293	PL_markstack = c->markstack;
294	PL_markstack_ptr = c->markstack_ptr;
295	PL_markstack_max = c->markstack_max;
296	PL_scopestack = c->scopestack;
297	PL_scopestack_ix = c->scopestack_ix;
298	PL_scopestack_max = c->scopestack_max;
299	PL_savestack = c->savestack;
300	PL_savestack_ix = c->savestack_ix;
301	PL_savestack_max = c->savestack_max;
302	#if PERL_VERSION < 9
303	PL_retstack = c->retstack;
304	PL_retstack_ix = c->retstack_ix;
305	PL_retstack_max = c->retstack_max;
306	#endif
307	PL_curpm = c->curpm;
308	PL_curcop = c->curcop;
309		317
310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		321	if (c->irssv)
		322	{
		323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		324	SvREFCNT_dec (c->irssv);
		325	else
		326	{
		327	REPLACE_SV (PL_rs, c->irssv);
		328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		329	sv_setsv (c->irssv_sv, PL_rs);
		330	}
		331	}
313		332
314	{	333	{
315	dSP;	334	dSP;
316	CV *cv;	335	CV *cv;
317		336
318	/* now do the ugly restore mess */	337	/* now do the ugly restore mess */
319	while ((cv = (CV *)POPs))	338	while ((cv = (CV *)POPs))
320	{	339	{
321	AV padlist = (AV )POPs;
322
323	if (padlist)
324	{
325	put_padlist (aTHX_ cv); /* mark this padlist as available */	340	put_padlist (cv); /* mark this padlist as available */
326	CvPADLIST(cv) = padlist;	341	CvDEPTH (cv) = PTR2IV (POPs);
327	}	342	CvPADLIST (cv) = (AV *)POPs;
328
329	++CvDEPTH(cv);
330	}	343	}
331		344
332	PUTBACK;	345	PUTBACK;
333	}	346	}
334	}	347	}
335		348
336	static void	349	static void
337	save_state(pTHX_ Coro__State c, int flags)	350	save_perl (Coro__State c)
338	{	351	{
339	{	352	{
340	dSP;	353	dSP;
341	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
345	/*	358	/*
346	* the worst thing you can imagine happens first - we have to save	359	* the worst thing you can imagine happens first - we have to save
347	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
348	*/	361	*/
349		362
		363	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	364	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
352	for (;;)	366	for (;;)
353	{	367	{
354	while (cxix >= 0)	368	while (cxix >= 0)
355	{	369	{
356	PERL_CONTEXT *cx = &ccstk[cxix--];	370	PERL_CONTEXT *cx = &ccstk[cxix--];
357		371
358	if (CxTYPE(cx) == CXt_SUB)	372	if (CxTYPE (cx) == CXt_SUB)
359	{	373	{
360	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
		375
361	if (CvDEPTH(cv))	376	if (CvDEPTH (cv))
362	{	377	{
363	EXTEND (SP, CvDEPTH(cv)*2);	378	EXTEND (SP, 3);
364
365	while (--CvDEPTH(cv))
366	{
367	/* this tells the restore code to increment CvDEPTH */
368	PUSHs (Nullsv);
369	PUSHs ((SV *)cv);
370	}
371
372	PUSHs ((SV *)CvPADLIST(cv));	379	PUSHs ((SV *)CvPADLIST (cv));
		380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
374		382
		383	CvDEPTH (cv) = 0;
375	get_padlist (aTHX_ cv);	384	get_padlist (cv);
376	}	385	}
377	}	386	}
378	#ifdef CXt_FORMAT
379	else if (CxTYPE(cx) == CXt_FORMAT)
380	{
381	/* I never used formats, so how should I know how these are implemented? */
382	/* my bold guess is as a simple, plain sub... */
383	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
384	}
385	#endif
386	}	387	}
387		388
388	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
389	break;	390	break;
390		391
…		…
394	}	395	}
395		396
396	PUTBACK;	397	PUTBACK;
397	}	398	}
398		399
399	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
400	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
402		404
403	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
404	c->in_eval = PL_in_eval;	406	# include "state.h"
405		407	#undef VAR
406	c->curstackinfo = PL_curstackinfo;
407	c->curstack = PL_curstack;
408	c->mainstack = PL_mainstack;
409	c->stack_sp = PL_stack_sp;
410	c->op = PL_op;
411	c->curpad = PL_curpad;
412	c->comppad = PL_comppad;
413	c->compcv = PL_compcv;
414	c->stack_base = PL_stack_base;
415	c->stack_max = PL_stack_max;
416	c->tmps_stack = PL_tmps_stack;
417	c->tmps_floor = PL_tmps_floor;
418	c->tmps_ix = PL_tmps_ix;
419	c->tmps_max = PL_tmps_max;
420	c->markstack = PL_markstack;
421	c->markstack_ptr = PL_markstack_ptr;
422	c->markstack_max = PL_markstack_max;
423	c->scopestack = PL_scopestack;
424	c->scopestack_ix = PL_scopestack_ix;
425	c->scopestack_max = PL_scopestack_max;
426	c->savestack = PL_savestack;
427	c->savestack_ix = PL_savestack_ix;
428	c->savestack_max = PL_savestack_max;
429	#if PERL_VERSION < 9
430	c->retstack = PL_retstack;
431	c->retstack_ix = PL_retstack_ix;
432	c->retstack_max = PL_retstack_max;
433	#endif
434	c->curpm = PL_curpm;
435	c->curcop = PL_curcop;
436	}	408	}
437		409
438	/*	410	/*
439	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
440	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
441	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
442	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
443	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
444	static void	419	static void
445	coro_init_stacks (pTHX)	420	coro_init_stacks ()
446	{	421	{
447	LOCK;
448
449	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
450	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
451	PL_curstack = PL_curstackinfo->si_stack;	424	PL_curstack = PL_curstackinfo->si_stack;
452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453		426
454	PL_stack_base = AvARRAY(PL_curstack);	427	PL_stack_base = AvARRAY(PL_curstack);
455	PL_stack_sp = PL_stack_base;	428	PL_stack_sp = PL_stack_base;
456	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457		430
458	New(50,PL_tmps_stack,96,SV*);	431	New(50,PL_tmps_stack,128,SV*);
459	PL_tmps_floor = -1;	432	PL_tmps_floor = -1;
460	PL_tmps_ix = -1;	433	PL_tmps_ix = -1;
461	PL_tmps_max = 96;	434	PL_tmps_max = 128;
462		435
463	New(54,PL_markstack,16,I32);	436	New(54,PL_markstack,32,I32);
464	PL_markstack_ptr = PL_markstack;	437	PL_markstack_ptr = PL_markstack;
465	PL_markstack_max = PL_markstack + 16;	438	PL_markstack_max = PL_markstack + 32;
466		439
467	#ifdef SET_MARK_OFFSET	440	#ifdef SET_MARK_OFFSET
468	SET_MARK_OFFSET;	441	SET_MARK_OFFSET;
469	#endif	442	#endif
470		443
471	New(54,PL_scopestack,16,I32);	444	New(54,PL_scopestack,32,I32);
472	PL_scopestack_ix = 0;	445	PL_scopestack_ix = 0;
473	PL_scopestack_max = 16;	446	PL_scopestack_max = 32;
474		447
475	New(54,PL_savestack,96,ANY);	448	New(54,PL_savestack,64,ANY);
476	PL_savestack_ix = 0;	449	PL_savestack_ix = 0;
477	PL_savestack_max = 96;	450	PL_savestack_max = 64;
478		451
479	#if PERL_VERSION < 9	452	#if !PERL_VERSION_ATLEAST (5,9,0)
480	New(54,PL_retstack,8,OP*);	453	New(54,PL_retstack,16,OP*);
481	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
482	PL_retstack_max = 8;	455	PL_retstack_max = 16;
483	#endif	456	#endif
484
485	UNLOCK;
486	}	457	}
		458	#endif
487		459
488	/*	460	/*
489	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
490	*/	462	*/
491	static void	463	static void
492	destroy_stacks(pTHX)	464	coro_destroy_stacks ()
493	{	465	{
494	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
495	{	467	{
496	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
497	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
498		471
499	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
500	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
501		475
502	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
503	}	477	}
504		478
505	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
506	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
507		481
508	while (PL_curstackinfo)	482	while (PL_curstackinfo)
509	{	483	{
510	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
511		485
512	{ /D//remove/
513	dSP;
514	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
515	PUTBACK; /* possibly superfluous */
516	}
517
518	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
519	{
520	dounwind (-1);/D//remove/
521	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
522	}
523		488
524	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
525	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
526	PL_curstackinfo = p;	491	PL_curstackinfo = p;
527	}	492	}
528		493
529	Safefree (PL_tmps_stack);	494	Safefree (PL_tmps_stack);
530	Safefree (PL_markstack);	495	Safefree (PL_markstack);
531	Safefree (PL_scopestack);	496	Safefree (PL_scopestack);
532	Safefree (PL_savestack);	497	Safefree (PL_savestack);
533	#if PERL_VERSION < 9	498	#if !PERL_VERSION_ATLEAST (5,9,0)
534	Safefree (PL_retstack);	499	Safefree (PL_retstack);
535	#endif	500	#endif
536	}	501	}
537		502
538	static void	503	static void
539	setup_coro (struct coro *coro)	504	setup_coro (struct coro *coro)
540	{	505	{
541	/*	506	/*
542	* emulate part of the perl startup here.	507	* emulate part of the perl startup here.
543	*/	508	*/
544	dTHX;	509
		510	coro_init_stacks ();
		511
		512	PL_curcop = &PL_compiling;
		513	PL_in_eval = EVAL_NULL;
		514	PL_curpm = 0;
		515	PL_localizing = 0;
		516	PL_dirty = 0;
		517	PL_restartop = 0;
		518
		519	{
		520	dSP;
		521	LOGOP myop;
		522
		523	SvREFCNT_dec (GvAV (PL_defgv));
		524	GvAV (PL_defgv) = coro->args; coro->args = 0;
		525
		526	Zero (&myop, 1, LOGOP);
		527	myop.op_next = Nullop;
		528	myop.op_flags = OPf_WANT_VOID;
		529
		530	PUSHMARK (SP);
		531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		532	PUTBACK;
		533	PL_op = (OP *)&myop;
		534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		535	SPAGAIN;
		536	}
		537
		538	ENTER; /* necessary e.g. for dounwind */
		539	}
		540
		541	static void
		542	free_coro_mortal ()
		543	{
		544	if (coro_mortal)
		545	{
		546	SvREFCNT_dec (coro_mortal);
		547	coro_mortal = 0;
		548	}
		549	}
		550
		551	/* inject a fake call to Coro::State::_cctx_init into the execution */
		552	static void NOINLINE
		553	prepare_cctx (coro_cctx *cctx)
		554	{
545	dSP;	555	dSP;
546	UNOP myop;	556	LOGOP myop;
547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
548		557
549	coro_init_stacks (aTHX);
550	/PL_curcop = 0;/
551	/PL_in_eval = PL_in_eval;/ /* inherit */
552	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;
554
555	SPAGAIN;
556
557	Zero (&myop, 1, UNOP);	558	Zero (&myop, 1, LOGOP);
558	myop.op_next = Nullop;	559	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
560		561
		562	PUSHMARK (SP);
		563	EXTEND (SP, 2);
		564	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		565	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		566	PUTBACK;
561	PL_op = (OP *)&myop;	567	PL_op = (OP *)&myop;
562
563	PUSHMARK(SP);
564	XPUSHs (sub_init);
565	PUTBACK;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	569	SPAGAIN;
568
569	ENTER; /* necessary e.g. for dounwind */
570	}
571
572	static void
573	free_coro_mortal ()
574	{
575	if (coro_mortal)
576	{
577	SvREFCNT_dec (coro_mortal);
578	coro_mortal = 0;
579	}
580	}	570	}
581		571
582	static void	572	static void
583	coro_run (void *arg)	573	coro_run (void *arg)
584	{	574	{
		575	/* coro_run is the alternative tail of transfer(), so unlock here. */
		576	UNLOCK;
		577
585	/*	578	/*
586	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
587	*/	580	*/
588	dTHX;
589	PL_top_env = &PL_start_env;	581	PL_top_env = &PL_start_env;
590		582
591	UNLOCK;	583	/* inject call to cctx_init */
		584	prepare_cctx ((coro_cctx *)arg);
592		585
593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
596
597	/* somebody will hit me for both perl_run and PL_restart_op */	586	/* somebody will hit me for both perl_run and PL_restartop */
598	perl_run (aTHX_ PERL_GET_CONTEXT);	587	PL_restartop = PL_op;
		588	perl_run (PL_curinterp);
599		589
		590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
600	abort ();	591	abort ();
601	}	592	}
602		593
603	static coro_stack *	594	static coro_cctx *
604	stack_new ()	595	cctx_new ()
605	{	596	{
606	coro_stack *stack;	597	coro_cctx *cctx;
607		598
		599	++cctx_count;
		600
608	New (0, stack, 1, coro_stack);	601	Newz (0, cctx, 1, coro_cctx);
609		602
610	#if HAVE_MMAP	603	#if HAVE_MMAP
611		604
612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		606	/* mmap supposedly does allocate-on-write for us */
613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
614		608
615	if (stack->sptr == (void *)-1)	609	if (cctx->sptr == (void *)-1)
616	{	610	{
617	perror ("FATAL: unable to mmap stack for coroutine");	611	perror ("FATAL: unable to mmap stack for coroutine");
618	_exit (EXIT_FAILURE);	612	_exit (EXIT_FAILURE);
619	}	613	}
620		614
		615	# if STACKGUARD
621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		617	# endif
622		618
623	#else	619	#else
624		620
625	stack->ssize = STACKSIZE * (long)sizeof (long);	621	cctx->ssize = STACKSIZE * (long)sizeof (long);
626	New (0, stack->sptr, STACKSIZE, long);	622	New (0, cctx->sptr, STACKSIZE, long);
627		623
628	if (!stack->sptr)	624	if (!cctx->sptr)
629	{	625	{
630	perror (stderr, "FATAL: unable to malloc stack for coroutine");	626	perror ("FATAL: unable to malloc stack for coroutine");
631	_exit (EXIT_FAILURE);	627	_exit (EXIT_FAILURE);
632	}	628	}
633		629
634	#endif	630	#endif
635		631
		632	#if USE_VALGRIND
		633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		635	cctx->ssize + (char *)cctx->sptr
		636	);
		637	#endif
		638
636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);	639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
637		640
638	return stack;	641	return cctx;
639	}	642	}
640		643
641	static void	644	static void
642	stack_free (coro_stack *stack)	645	cctx_destroy (coro_cctx *cctx)
643	{	646	{
644	if (!stack \|\| stack == main_stack)	647	if (!cctx)
645	return;	648	return;
646		649
		650	--cctx_count;
		651
		652	#if USE_VALGRIND
		653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		654	#endif
		655
647	#if HAVE_MMAP	656	#if HAVE_MMAP
648	munmap (stack->sptr, stack->ssize);	657	munmap (cctx->sptr, cctx->ssize);
649	#else	658	#else
650	Safefree (stack->sptr);	659	Safefree (cctx->sptr);
651	#endif	660	#endif
652		661
653	Safefree (stack);	662	Safefree (cctx);
654	}	663	}
655		664
656	static coro_stack *stack_first;
657
658	static coro_stack *	665	static coro_cctx *
659	stack_get ()	666	cctx_get ()
660	{	667	{
661	coro_stack *stack;	668	coro_cctx *cctx;
662		669
663	if (stack_first)	670	if (cctx_first)
664	{	671	{
665	stack = stack_first;	672	cctx = cctx_first;
666	stack_first = stack->next;	673	cctx_first = cctx->next;
		674	--cctx_idle;
667	}	675	}
668	else	676	else
669	{	677	{
670	stack = stack_new ();	678	cctx = cctx_new ();
671	PL_op = PL_op->op_next;	679	PL_op = PL_op->op_next;
672	}	680	}
673		681
674	return stack;	682	return cctx;
675	}	683	}
676		684
677	static void	685	static void
678	stack_put (coro_stack *stack)	686	cctx_put (coro_cctx *cctx)
679	{	687	{
680	stack->next = stack_first;	688	/* free another cctx if overlimit */
681	stack_first = stack;	689	if (cctx_idle >= MAX_IDLE_CCTX)
		690	{
		691	coro_cctx *first = cctx_first;
		692	cctx_first = first->next;
		693	--cctx_idle;
		694
		695	assert (!first->inuse);
		696	cctx_destroy (first);
		697	}
		698
		699	++cctx_idle;
		700	cctx->next = cctx_first;
		701	cctx_first = cctx;
682	}	702	}
683		703
684	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
685	static void	705	static void NOINLINE
686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
687	{	707	{
688	dSTACKLEVEL;	708	dSTACKLEVEL;
689		709
690	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
692	((coro_stack *)prev)->idle_sp = STACKLEVEL;	713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		715	}
693	else if (prev != next)	716	else if (prev != next)
694	{	717	{
695	coro_stack *prev__stack;	718	coro_cctx *prev__cctx;
		719
		720	if (prev->flags & CF_NEW)
		721	{
		722	/* create a new empty context */
		723	Newz (0, prev->cctx, 1, coro_cctx);
		724	prev->cctx->inuse = 1;
		725	prev->flags &= ~CF_NEW;
		726	prev->flags \|= CF_RUNNING;
		727	}
		728
		729	/TODO: must not croak here /
		730	if (!prev->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		732
		733	if (next->flags & CF_RUNNING)
		734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		735
		736	prev->flags &= ~CF_RUNNING;
		737	next->flags \|= CF_RUNNING;
696		738
697	LOCK;	739	LOCK;
698		740
699	if (next->mainstack)	741	if (next->flags & CF_NEW)
700	{	742	{
701	/* coroutine already started */	743	/* need to start coroutine */
702	SAVE (prev, flags);	744	next->flags &= ~CF_NEW;
703	LOAD (next);	745	/* first get rid of the old state */
		746	save_perl (prev);
		747	/* setup coroutine call */
		748	setup_coro (next);
		749	/* need a new stack */
		750	assert (!next->cctx);
704	}	751	}
705	else	752	else
706	{	753	{
707	/* need to start coroutine */	754	/* coroutine already started */
708	/* first get rid of the old state */	755	save_perl (prev);
709	SAVE (prev, -1);	756	load_perl (next);
710	/* setup coroutine call */
711	setup_coro (next);
712	/* need a stack */
713	next->stack = 0;
714	}	757	}
715		758
716	prev__stack = prev->stack;	759	prev__cctx = prev->cctx;
717		760
718	/* possibly "free" the stack */	761	/* possibly "free" the cctx */
719	if (prev__stack->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
720	{	763	{
721	stack_put (prev__stack);	764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		766
722	prev->stack = 0;	767	prev->cctx = 0;
		768
		769	cctx_put (prev__cctx);
		770	prev__cctx->inuse = 0;
723	}	771	}
724		772
725	if (!next->stack)	773	if (!next->cctx)
726	next->stack = stack_get ();
727
728	if (prev__stack != next->stack)
729	{	774	{
730	prev__stack->top_env = PL_top_env;	775	next->cctx = cctx_get ();
731	PL_top_env = next->stack->top_env;	776	assert (!next->cctx->inuse);
732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);	777	next->cctx->inuse = 1;
733	}	778	}
734		779
		780	if (prev__cctx != next->cctx)
		781	{
		782	prev__cctx->top_env = PL_top_env;
		783	PL_top_env = next->cctx->top_env;
		784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		785	}
		786
735	free_coro_mortal ();	787	free_coro_mortal ();
736		788
737	UNLOCK;	789	UNLOCK;
738	}	790	}
739	}	791	}
740		792
741	/* use this function pointer to call the above function */
742	/* this is done to increase chances of the compiler not inlining the call */
743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
745
746	struct transfer_args	793	struct transfer_args
747	{	794	{
748	struct coro prev, next;	795	struct coro prev, next;
749	int flags;
750	};	796	};
751		797
752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
753		799
754	static void	800	static void
755	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
756	{	802	{
757	if (coro->refcnt--)	803	if (coro->refcnt--)
758	return;	804	return;
759		805
760	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
761	{	807	{
762	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
763		811
764	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	812	if (coro->flags & CF_RUNNING)
765	LOAD (aTHX_ coro);	813	croak ("FATAL: tried to destroy currently running coroutine");
766		814
		815	save_perl (&temp);
		816	load_perl (coro);
		817
767	destroy_stacks (aTHX);	818	coro_destroy_stacks ();
768		819
769	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
770		821
771	coro->mainstack = 0;	822	coro->mainstack = 0;
772	}	823	}
773		824
774	stack_free (coro->stack);	825	cctx_destroy (coro->cctx);
775	SvREFCNT_dec (coro->args);	826	SvREFCNT_dec (coro->args);
776	Safefree (coro);	827	Safefree (coro);
777	}	828	}
778		829
779	static int	830	static int
780	coro_state_clear (SV sv, MAGIC mg)	831	coro_state_clear (pTHX_ SV sv, MAGIC mg)
781	{	832	{
782	struct coro coro = (struct coro )mg->mg_ptr;	833	struct coro coro = (struct coro )mg->mg_ptr;
783	mg->mg_ptr = 0;	834	mg->mg_ptr = 0;
784		835
785	coro_state_destroy (coro);	836	coro_state_destroy (coro);
786		837
787	return 0;	838	return 0;
788	}	839	}
789		840
790	static int	841	static int
791	coro_state_dup (MAGIC mg, CLONE_PARAMS params)	842	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
792	{	843	{
793	struct coro coro = (struct coro )mg->mg_ptr;	844	struct coro coro = (struct coro )mg->mg_ptr;
794		845
795	++coro->refcnt;	846	++coro->refcnt;
796		847
797	return 0;	848	return 0;
798	}	849	}
799		850
800	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };	851	static MGVTBL coro_state_vtbl = {
		852	0, 0, 0, 0,
		853	coro_state_clear,
		854	0,
		855	#ifdef MGf_DUP
		856	coro_state_dup,
		857	#else
		858	# define MGf_DUP 0
		859	#endif
		860	};
801		861
802	static struct coro *	862	static struct coro *
803	SvSTATE (SV *coro)	863	SvSTATE (SV *coro)
804	{	864	{
805	HV *stash;	865	HV *stash;
…		…
820	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
821	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
822	}	882	}
823		883
824	static void	884	static void
825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)	885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
826	{	886	{
827	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
828	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
829	ta->flags = flags;
830	}	889	}
831		890
832	static void	891	static void
833	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
834	{	893	{
835	dTHX;
836	struct transfer_args ta;	894	struct transfer_args ta;
837		895
838	prepare_transfer (aTHX_ &ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
839	TRANSFER (ta);	897	TRANSFER (ta);
		898	}
		899
		900	static int
		901	api_save (SV *coro_sv, int new_save)
		902	{
		903	struct coro *coro = SvSTATE (coro_sv);
		904	int old_save = coro->save;
		905
		906	if (new_save >= 0)
		907	coro->save = new_save;
		908
		909	return old_save;
840	}	910	}
841		911
842	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
843		913
844	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
847	#define PRIO_LOW -1	917	#define PRIO_LOW -1
848	#define PRIO_IDLE -3	918	#define PRIO_IDLE -3
849	#define PRIO_MIN -4	919	#define PRIO_MIN -4
850		920
851	/* for Coro.pm */	921	/* for Coro.pm */
852	static GV coro_current, coro_idle;	922	static SV *coro_current;
853	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
854	static int coro_nready;	924	static int coro_nready;
855		925
856	static void	926	static void
857	coro_enq (pTHX_ SV *sv)	927	coro_enq (SV *coro_sv)
858	{	928	{
859	int prio;
860
861	if (SvTYPE (sv) != SVt_PVHV)
862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
863
864	prio = SvSTATE (sv)->prio;
865
866	av_push (coro_ready [prio - PRIO_MIN], sv);	929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
867	coro_nready++;	930	coro_nready++;
868	}	931	}
869		932
870	static SV *	933	static SV *
871	coro_deq (pTHX_ int min_prio)	934	coro_deq (int min_prio)
872	{	935	{
873	int prio = PRIO_MAX - PRIO_MIN;	936	int prio = PRIO_MAX - PRIO_MIN;
874		937
875	min_prio -= PRIO_MIN;	938	min_prio -= PRIO_MIN;
876	if (min_prio < 0)	939	if (min_prio < 0)
…		…
884	}	947	}
885		948
886	return 0;	949	return 0;
887	}	950	}
888		951
889	static void	952	static int
890	api_ready (SV *coro)	953	api_ready (SV *coro_sv)
891	{	954	{
892	dTHX;	955	struct coro *coro;
893		956
894	if (SvROK (coro))	957	if (SvROK (coro_sv))
895	coro = SvRV (coro);	958	coro_sv = SvRV (coro_sv);
		959
		960	coro = SvSTATE (coro_sv);
		961
		962	if (coro->flags & CF_READY)
		963	return 0;
		964
		965	coro->flags \|= CF_READY;
896		966
897	LOCK;	967	LOCK;
898	coro_enq (aTHX_ SvREFCNT_inc (coro));	968	coro_enq (SvREFCNT_inc (coro_sv));
899	UNLOCK;	969	UNLOCK;
900	}
901		970
		971	return 1;
		972	}
		973
902	static void	974	static int
		975	api_is_ready (SV *coro_sv)
		976	{
		977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		978	}
		979
		980	static void
903	prepare_schedule (aTHX_ struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
904	{	982	{
905	SV current, prev, *next;	983	SV prev, next;
906
907	LOCK;
908
909	current = GvSV (coro_current);
910		984
911	for (;;)	985	for (;;)
912	{	986	{
913	LOCK;	987	LOCK;
914
915	next = coro_deq (aTHX_ PRIO_MIN);	988	next = coro_deq (PRIO_MIN);
		989	UNLOCK;
916		990
917	if (next)	991	if (next)
918	break;	992	break;
919		993
920	UNLOCK;
921
922	{	994	{
923	dSP;	995	dSP;
924		996
925	ENTER;	997	ENTER;
926	SAVETMPS;	998	SAVETMPS;
927		999
928	PUSHMARK (SP);	1000	PUSHMARK (SP);
929	PUTBACK;	1001	PUTBACK;
930	call_sv (GvSV (coro_idle), G_DISCARD);	1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
931		1003
932	FREETMPS;	1004	FREETMPS;
933	LEAVE;	1005	LEAVE;
934	}	1006	}
935	}	1007	}
936		1008
937	prev = SvRV (current);	1009	prev = SvRV (coro_current);
938	SvRV (current) = next;	1010	SvRV_set (coro_current, next);
939		1011
940	/* free this only after the transfer */	1012	/* free this only after the transfer */
		1013	LOCK;
941	free_coro_mortal ();	1014	free_coro_mortal ();
		1015	UNLOCK;
942	coro_mortal = prev;	1016	coro_mortal = prev;
943		1017
		1018	assert (!SvROK(prev));//D
		1019	assert (!SvROK(next));//D
		1020
944	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
945	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
946	ta->flags = TRANSFER_SAVE_ALL;
947		1023
948	UNLOCK;	1024	assert (ta->next->flags & CF_READY);
		1025	ta->next->flags &= ~CF_READY;
949	}	1026	}
950		1027
951	static void	1028	static void
952	prepare_cede (aTHX_ struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
953	{	1030	{
954	LOCK;	1031	api_ready (coro_current);
955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
956	UNLOCK;
957
958	prepare_schedule (ta);	1032	prepare_schedule (ta);
959	}	1033	}
960		1034
		1035	static int
		1036	prepare_cede_notself (struct transfer_args *ta)
		1037	{
		1038	if (coro_nready)
		1039	{
		1040	SV *prev = SvRV (coro_current);
		1041	prepare_schedule (ta);
		1042	api_ready (prev);
		1043	return 1;
		1044	}
		1045	else
		1046	return 0;
		1047	}
		1048
961	static void	1049	static void
962	api_schedule (void)	1050	api_schedule (void)
963	{	1051	{
964	dTHX;
965	struct transfer_args ta;	1052	struct transfer_args ta;
966		1053
967	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
968	TRANSFER (ta);	1055	TRANSFER (ta);
969	}	1056	}
970		1057
971	static void	1058	static int
972	api_cede (void)	1059	api_cede (void)
973	{	1060	{
974	dTHX;
975	struct transfer_args ta;	1061	struct transfer_args ta;
976		1062
977	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
978	TRANSFER (ta);	1067	TRANSFER (ta);
		1068	return 1;
		1069	}
		1070	else
		1071	return 0;
		1072	}
		1073
		1074	static int
		1075	api_cede_notself (void)
		1076	{
		1077	struct transfer_args ta;
		1078
		1079	if (prepare_cede_notself (&ta))
		1080	{
		1081	TRANSFER (ta);
		1082	return 1;
		1083	}
		1084	else
		1085	return 0;
979	}	1086	}
980		1087
981	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
982		1089
983	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
989	#endif	1096	#endif
990	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
991		1098
992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
993		1100
994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
997		1106
998	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
999		1108
1000	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1001	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
1002
1003	Newz (0, main_stack, 1, coro_stack);
1004	main_stack->idle_sp = (void *)-1;
1005		1111
1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1007	}	1113	}
1008		1114
1009	SV *	1115	SV *
…		…
1014	HV *hv;	1120	HV *hv;
1015	int i;	1121	int i;
1016		1122
1017	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1018	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
		1126	coro->flags = CF_NEW;
1019		1127
1020	hv = newHV ();	1128	hv = newHV ();
1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1023		1131
1024	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1025	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1026
1027	coro->stack = main_stack;
1028	/coro->mainstack = 0; //actual work is done inside transfer /
1029	/coro->stack = 0;/
1030	}	1134	}
1031	OUTPUT:	1135	OUTPUT:
1032	RETVAL	1136	RETVAL
1033		1137
		1138	int
		1139	save (SV *coro, int new_save = -1)
		1140	CODE:
		1141	RETVAL = api_save (coro, new_save);
		1142	OUTPUT:
		1143	RETVAL
		1144
1034	void	1145	void
1035	transfer (...)	1146	_set_stacklevel (...)
1036	ALIAS:	1147	ALIAS:
1037	Coro::schedule = 1	1148	Coro::State::transfer = 1
1038	Coro::cede = 2	1149	Coro::schedule = 2
1039	_set_stacklevel = 3	1150	Coro::cede = 3
		1151	Coro::cede_notself = 4
1040	CODE:	1152	CODE:
1041	{	1153	{
1042	struct transfer_args ta;	1154	struct transfer_args ta;
1043		1155
1044	switch (ix)	1156	switch (ix)
1045	{	1157	{
1046	case 0:	1158	case 0:
1047	if (items != 3)	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1160	ta.next = 0;
1049
1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1051	break;	1161	break;
1052		1162
1053	case 1:	1163	case 1:
		1164	if (items != 2)
		1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1166
		1167	prepare_transfer (&ta, ST (0), ST (1));
		1168	break;
		1169
		1170	case 2:
1054	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1055	break;	1172	break;
1056		1173
1057	case 2:	1174	case 3:
1058	prepare_cede (&ta);	1175	prepare_cede (&ta);
1059	break;	1176	break;
1060		1177
1061	case 3:	1178	case 4:
1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));	1179	if (!prepare_cede_notself (&ta))
1063	ta.next = 0;	1180	XSRETURN_EMPTY;
1064	ta.flags = TRANSFER_SET_STACKLEVEL;	1181
1065	break;	1182	break;
1066	}	1183	}
1067		1184
		1185	BARRIER;
1068	TRANSFER (ta);	1186	TRANSFER (ta);
1069	}	1187	}
1070		1188
1071	void	1189	void
1072	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1078		1196
1079	++coro_src->refcnt;	1197	++coro_src->refcnt;
1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1081	}	1199	}
1082
1083	void
1084	_nonlocal_goto (IV nextop)
1085	CODE:
1086	/* uuh, somebody will kill me again for this */
1087	PL_op->op_next = INT2PTR (OP *, nextop);
1088		1200
1089	void	1201	void
1090	_exit (code)	1202	_exit (code)
1091	int code	1203	int code
1092	PROTOTYPE: $	1204	PROTOTYPE: $
1093	CODE:	1205	CODE:
1094	_exit (code);	1206	_exit (code);
1095		1207
1096	MODULE = Coro::State PACKAGE = Coro::Cont	1208	int
		1209	cctx_count ()
		1210	CODE:
		1211	RETVAL = cctx_count;
		1212	OUTPUT:
		1213	RETVAL
1097		1214
1098	void	1215	int
1099	yield (...)	1216	cctx_idle ()
1100	PROTOTYPE: @	1217	CODE:
1101	CODE:	1218	RETVAL = cctx_idle;
1102	{	1219	OUTPUT:
1103	SV *yieldstack;	1220	RETVAL
1104	SV *sv;
1105	AV *defav = GvAV (PL_defgv);
1106	struct coro prev, next;
1107
1108	yieldstack = *hv_fetch (
1109	(HV *)SvRV (GvSV (coro_current)),
1110	"yieldstack", sizeof ("yieldstack") - 1,
1111	0
1112	);
1113
1114	/* set up @_ -- ugly */
1115	av_clear (defav);
1116	av_fill (defav, items - 1);
1117	while (items--)
1118	av_store (defav, items, SvREFCNT_inc (ST(items)));
1119
1120	sv = av_pop ((AV *)SvRV (yieldstack));
1121	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1122	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1123	SvREFCNT_dec (sv);
1124
1125	coro_state_transfer (aTHX_ prev, next, 0);
1126	}
1127		1221
1128	MODULE = Coro::State PACKAGE = Coro	1222	MODULE = Coro::State PACKAGE = Coro
1129		1223
1130	BOOT:	1224	BOOT:
1131	{	1225	{
…		…
1138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1140	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1141	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1142		1236
1143	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1237	coro_current = get_sv ("Coro::current", FALSE);
1144	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1238	SvREADONLY_on (coro_current);
1145		1239
1146	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1147	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1148		1242
1149	{	1243	{
1150	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1151		1245
1152	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1153	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1154	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
		1251	coroapi.is_ready = api_is_ready;
1155	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1156	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1157		1254
1158	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1159	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1160	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1161	}	1258	}
1162	}	1259	}
		1260
		1261	void
		1262	_set_current (SV *current)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	SvREFCNT_dec (SvRV (coro_current));
		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1163		1267
1164	int	1268	int
1165	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1166	ALIAS:	1270	ALIAS:
1167	nice = 1	1271	nice = 1
…		…
1170	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1171		1275
1172	if (items > 1)	1276	if (items > 1)
1173	{	1277	{
1174	if (ix)	1278	if (ix)
1175	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1176		1280
1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1179		1283
1180	coro->prio = newprio;	1284	coro->prio = newprio;
1181	}	1285	}
1182	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1183		1289
1184	void	1290	SV *
1185	ready (SV *self)	1291	ready (SV *self)
1186	PROTOTYPE: $	1292	PROTOTYPE: $
1187	CODE:	1293	CODE:
1188	api_ready (self);	1294	RETVAL = boolSV (api_ready (self));
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	SV *
		1299	is_ready (SV *self)
		1300	PROTOTYPE: $
		1301	CODE:
		1302	RETVAL = boolSV (api_is_ready (self));
		1303	OUTPUT:
		1304	RETVAL
1189		1305
1190	int	1306	int
1191	nready (...)	1307	nready (...)
1192	PROTOTYPE:	1308	PROTOTYPE:
1193	CODE:	1309	CODE:
…		…
1199		1315
1200	SV *	1316	SV *
1201	_get_state ()	1317	_get_state ()
1202	CODE:	1318	CODE:
1203	{	1319	{
1204	struct {	1320	struct io_state *data;
1205	int errorno;
1206	int laststype;
1207	int laststatval;
1208	Stat_t statcache;
1209	} data;
1210		1321
		1322	RETVAL = newSV (sizeof (struct io_state));
		1323	data = (struct io_state *)SvPVX (RETVAL);
		1324	SvCUR_set (RETVAL, sizeof (struct io_state));
		1325	SvPOK_only (RETVAL);
		1326
1211	data.errorno = errno;	1327	data->errorno = errno;
1212	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1213	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1214	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1215
1216	RETVAL = newSVpvn ((char *)&data, sizeof data);
1217	}	1331	}
1218	OUTPUT:	1332	OUTPUT:
1219	RETVAL	1333	RETVAL
1220		1334
1221	void	1335	void
1222	_set_state (char *data_)	1336	_set_state (char *data_)
1223	PROTOTYPE: $	1337	PROTOTYPE: $
1224	CODE:	1338	CODE:
1225	{	1339	{
1226	struct {	1340	struct io_state data = (void )data_;
1227	int errorno;
1228	int laststype;
1229	int laststatval;
1230	Stat_t statcache;
1231	} data = (void )data_;
1232		1341
1233	errno = data->errorno;	1342	errno = data->errorno;
1234	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1235	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1236	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1237	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC