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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.127 by root, Tue Dec 12 13:56:45 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 <errno.h>	70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
33		74
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	76	# undef STACKGUARD
36	#endif	77	#endif
37		78
38	#ifndef STACKGUARD	79	#ifndef STACKGUARD
39	# define STACKGUARD 0	80	# define STACKGUARD 0
40	#endif	81	#endif
41		82
42	#ifdef HAVE_MMAP	83	/* prefer perl internal functions over our own? */
43	# include <unistd.h>	84	#ifndef PREFER_PERL_FUNCTIONS
44	# include <sys/mman.h>	85	# define PREFER_PERL_FUNCTIONS 0
45	# ifndef MAP_ANONYMOUS
46	# ifdef MAP_ANON
47	# define MAP_ANONYMOUS MAP_ANON
48	# else
49	# undef HAVE_MMAP
50	# endif
51	# endif	86	#endif
52	# include <limits.h>
53	# ifndef PAGESIZE
54	# define PAGESIZE pagesize
55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56	static long pagesize;
57	# else
58	# define BOOT_PAGESIZE
59	# endif
60	#endif
61
62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		87
65	/* 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
66	* 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
67	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
69		93
70	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
71		95
72	#define labs(l) ((l) >= 0 ? (l) : -(l))	96	#if __GNUC__ >= 3
		97	# define attribute(x) __attribute__(x)
		98	#else
		99	# define attribute(x)
		100	#endif
		101
		102	#define NOINLINE attribute ((noinline))
73		103
74	#include "CoroAPI.h"	104	#include "CoroAPI.h"
75		105
76	#ifdef USE_ITHREADS	106	#ifdef USE_ITHREADS
77	static perl_mutex coro_mutex;	107	static perl_mutex coro_mutex;
…		…
80	#else	110	#else
81	# define LOCK (void)0	111	# define LOCK (void)0
82	# define UNLOCK (void)0	112	# define UNLOCK (void)0
83	#endif	113	#endif
84		114
		115	struct io_state
		116	{
		117	int errorno;
		118	I32 laststype;
		119	int laststatval;
		120	Stat_t statcache;
		121	};
		122
85	static struct CoroAPI coroapi;	123	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	124	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	125	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	126	static SV coro_mortal; / will be freed after next transfer */
91		127
92	/* this is actually not only the c stack but also c registers etc... */	128	static struct coro_cctx *cctx_first;
		129	static int cctx_count, cctx_idle;
		130
		131	/* this is a structure representing a c-level coroutine */
93	typedef struct {	132	typedef struct coro_cctx {
94	int refcnt; /* pointer reference counter */	133	struct coro_cctx *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		134
98	coro_context cctx;	135	/* the stack */
99
100	void *sptr;	136	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	137	long ssize; /* positive == mmap, otherwise malloc */
102	} coro_stack;
103		138
		139	/* cpu state */
		140	void idle_sp; / sp of top-level transfer/schedule/cede call */
		141	JMPENV *top_env;
		142	coro_context cctx;
		143
		144	int inuse;
		145
		146	#if USE_VALGRIND
		147	int valgrind_id;
		148	#endif
		149	} coro_cctx;
		150
		151	enum {
		152	CF_RUNNING = 0x0001, /* coroutine is running */
		153	CF_READY = 0x0002, /* coroutine is ready */
		154	CF_NEW = 0x0004, /* ahs never been switched to */
		155	};
		156
		157	/* this is a structure representing a perl-level coroutine */
104	struct coro {	158	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */	159	/* the c coroutine allocated to this perl coroutine, if any */
106	JMPENV start_env;	160	coro_cctx *cctx;
107
108	/* the optional C context */
109	coro_stack *stack;
110	void *cursp;
111	int gencnt;
112
113	/* optionally saved, might be zero */
114	AV *defav;
115	SV *defsv;
116	SV *errsv;
117
118	/* saved global state not related to stacks */
119	U8 dowarn;
120	I32 in_eval;
121
122	/* the stacks and related info (callchain etc..) */
123	PERL_SI *curstackinfo;
124	AV *curstack;
125	AV *mainstack;
126	SV **stack_sp;
127	OP *op;
128	SV **curpad;
129	AV *comppad;
130	CV *compcv;
131	SV **stack_base;
132	SV **stack_max;
133	SV **tmps_stack;
134	I32 tmps_floor;
135	I32 tmps_ix;
136	I32 tmps_max;
137	I32 *markstack;
138	I32 *markstack_ptr;
139	I32 *markstack_max;
140	I32 *scopestack;
141	I32 scopestack_ix;
142	I32 scopestack_max;
143	ANY *savestack;
144	I32 savestack_ix;
145	I32 savestack_max;
146	OP **retstack;
147	I32 retstack_ix;
148	I32 retstack_max;
149	PMOP *curpm;
150	COP *curcop;
151	JMPENV *top_env;
152		161
153	/* data associated with this coroutine (initial args) */	162	/* data associated with this coroutine (initial args) */
154	AV *args;	163	AV *args;
		164	int refcnt;
		165	int save; /* CORO_SAVE flags */
		166	int flags; /* CF_ flags */
		167
		168	/* optionally saved, might be zero */
		169	AV defav; / @_ */
		170	SV defsv; / $_ */
		171	SV errsv; / $@ */
		172	SV irssv; / $/ */
		173	SV irssv_sv; / real $/ cache */
		174
		175	#define VAR(name,type) type name;
		176	# include "state.h"
		177	#undef VAR
		178
		179	/* coro process data */
		180	int prio;
155	};	181	};
156		182
157	typedef struct coro *Coro__State;	183	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	184	typedef struct coro *Coro__State_or_hashref;
159		185
160	static AV *	186	static AV *
161	coro_clone_padlist (pTHX_ CV *cv)	187	coro_clone_padlist (CV *cv)
162	{	188	{
163	AV *padlist = CvPADLIST (cv);	189	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	190	AV newpadlist, newpad;
165		191
166	newpadlist = newAV ();	192	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	193	AvREAL_off (newpadlist);
		194	#if PERL_VERSION_ATLEAST (5,9,0)
		195	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		196	#else
168	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	197	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		198	#endif
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	199	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	200	--AvFILLp (padlist);
171		201
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	202	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
173	av_store (newpadlist, 1, (SV *)newpad);	203	av_store (newpadlist, 1, (SV *)newpad);
174		204
175	return newpadlist;	205	return newpadlist;
176	}	206	}
177		207
178	static void	208	static void
179	free_padlist (pTHX_ AV *padlist)	209	free_padlist (AV *padlist)
180	{	210	{
181	/* may be during global destruction */	211	/* may be during global destruction */
182	if (SvREFCNT (padlist))	212	if (SvREFCNT (padlist))
183	{	213	{
184	I32 i = AvFILLp (padlist);	214	I32 i = AvFILLp (padlist);
…		…
205	AV *padlist;	235	AV *padlist;
206	AV av = (AV )mg->mg_obj;	236	AV av = (AV )mg->mg_obj;
207		237
208	/* casting is fun. */	238	/* casting is fun. */
209	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	239	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
210	free_padlist (aTHX_ padlist);	240	free_padlist (padlist);
211		241
212	SvREFCNT_dec (av);	242	SvREFCNT_dec (av);
213		243
214	return 0;	244	return 0;
215	}	245	}
216		246
217	#define PERL_MAGIC_coro PERL_MAGIC_ext	247	#define PERL_MAGIC_coro PERL_MAGIC_ext
218		248
219	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	249	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
220		250
		251	#define CORO_MAGIC(cv) \
		252	SvMAGIC (cv) \
		253	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		254	? SvMAGIC (cv) \
		255	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		256	: 0
		257
221	/* the next two functions merely cache the padlists */	258	/* the next two functions merely cache the padlists */
222	static void	259	static void
223	get_padlist (pTHX_ CV *cv)	260	get_padlist (CV *cv)
224	{	261	{
225	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	262	MAGIC *mg = CORO_MAGIC (cv);
		263	AV *av;
226		264
227	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
228	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
229	else	267	else
230	{	268	{
231	#if 0	269	#if PREFER_PERL_FUNCTIONS
232	/* this should work - but it doesn't :( */	270	/* this is probably cleaner, but also slower? */
233	CV *cp = Perl_cv_clone (aTHX_ cv);	271	CV *cp = Perl_cv_clone (cv);
234	CvPADLIST (cv) = CvPADLIST (cp);	272	CvPADLIST (cv) = CvPADLIST (cp);
235	CvPADLIST (cp) = 0;	273	CvPADLIST (cp) = 0;
236	SvREFCNT_dec (cp);	274	SvREFCNT_dec (cp);
237	#else	275	#else
238	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	276	CvPADLIST (cv) = coro_clone_padlist (cv);
239	#endif	277	#endif
240	}	278	}
241	}	279	}
242		280
243	static void	281	static void
244	put_padlist (pTHX_ CV *cv)	282	put_padlist (CV *cv)
245	{	283	{
246	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	284	MAGIC *mg = CORO_MAGIC (cv);
		285	AV *av;
247		286
248	if (!mg)	287	if (!mg)
249	{	288	{
250	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	289	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
251	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	290	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
252	mg->mg_virtual = &vtbl_coro;	291	mg->mg_virtual = &vtbl_coro;
253	mg->mg_obj = (SV *)newAV ();	292	mg->mg_obj = (SV *)newAV ();
254	}	293	}
255		294
256	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	295	av = (AV *)mg->mg_obj;
		296
		297	if (AvFILLp (av) >= AvMAX (av))
		298	av_extend (av, AvMAX (av) + 1);
		299
		300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
257	}	301	}
258		302
259	#define SB do {	303	#define SB do {
260	#define SE } while (0)	304	#define SE } while (0)
261		305
262	#define LOAD(state) load_state(aTHX_ (state));
263	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
264
265	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
266		307
267	static void	308	static void
268	load_state(pTHX_ Coro__State c)	309	load_perl (Coro__State c)
269	{	310	{
270	PL_dowarn = c->dowarn;	311	#define VAR(name,type) PL_ ## name = c->name;
271	PL_in_eval = c->in_eval;	312	# include "state.h"
272		313	#undef VAR
273	PL_curstackinfo = c->curstackinfo;
274	PL_curstack = c->curstack;
275	PL_mainstack = c->mainstack;
276	PL_stack_sp = c->stack_sp;
277	PL_op = c->op;
278	PL_curpad = c->curpad;
279	PL_comppad = c->comppad;
280	PL_compcv = c->compcv;
281	PL_stack_base = c->stack_base;
282	PL_stack_max = c->stack_max;
283	PL_tmps_stack = c->tmps_stack;
284	PL_tmps_floor = c->tmps_floor;
285	PL_tmps_ix = c->tmps_ix;
286	PL_tmps_max = c->tmps_max;
287	PL_markstack = c->markstack;
288	PL_markstack_ptr = c->markstack_ptr;
289	PL_markstack_max = c->markstack_max;
290	PL_scopestack = c->scopestack;
291	PL_scopestack_ix = c->scopestack_ix;
292	PL_scopestack_max = c->scopestack_max;
293	PL_savestack = c->savestack;
294	PL_savestack_ix = c->savestack_ix;
295	PL_savestack_max = c->savestack_max;
296	#if PERL_VERSION < 9
297	PL_retstack = c->retstack;
298	PL_retstack_ix = c->retstack_ix;
299	PL_retstack_max = c->retstack_max;
300	#endif
301	PL_curpm = c->curpm;
302	PL_curcop = c->curcop;
303	PL_top_env = c->top_env;
304		314
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	315	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	316	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	317	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		318	if (c->irssv)
		319	{
		320	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		321	SvREFCNT_dec (c->irssv);
		322	else
		323	{
		324	REPLACE_SV (PL_rs, c->irssv);
		325	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		326	sv_setsv (c->irssv_sv, PL_rs);
		327	}
		328	}
308		329
309	{	330	{
310	dSP;	331	dSP;
311	CV *cv;	332	CV *cv;
312		333
313	/* now do the ugly restore mess */	334	/* now do the ugly restore mess */
314	while ((cv = (CV *)POPs))	335	while ((cv = (CV *)POPs))
315	{	336	{
316	AV padlist = (AV )POPs;
317
318	if (padlist)
319	{
320	put_padlist (aTHX_ cv); /* mark this padlist as available */	337	put_padlist (cv); /* mark this padlist as available */
321	CvPADLIST(cv) = padlist;	338	CvDEPTH (cv) = PTR2IV (POPs);
322	}	339	CvPADLIST (cv) = (AV *)POPs;
323
324	++CvDEPTH(cv);
325	}	340	}
326		341
327	PUTBACK;	342	PUTBACK;
328	}	343	}
329	}	344	}
330		345
331	static void	346	static void
332	save_state(pTHX_ Coro__State c, int flags)	347	save_perl (Coro__State c)
333	{	348	{
334	{	349	{
335	dSP;	350	dSP;
336	I32 cxix = cxstack_ix;	351	I32 cxix = cxstack_ix;
337	PERL_CONTEXT *ccstk = cxstack;	352	PERL_CONTEXT *ccstk = cxstack;
…		…
340	/*	355	/*
341	* the worst thing you can imagine happens first - we have to save	356	* the worst thing you can imagine happens first - we have to save
342	* (and reinitialize) all cv's in the whole callchain :(	357	* (and reinitialize) all cv's in the whole callchain :(
343	*/	358	*/
344		359
		360	EXTEND (SP, 3 + 1);
345	PUSHs (Nullsv);	361	PUSHs (Nullsv);
346	/* this loop was inspired by pp_caller */	362	/* this loop was inspired by pp_caller */
347	for (;;)	363	for (;;)
348	{	364	{
349	while (cxix >= 0)	365	while (cxix >= 0)
350	{	366	{
351	PERL_CONTEXT *cx = &ccstk[cxix--];	367	PERL_CONTEXT *cx = &ccstk[cxix--];
352		368
353	if (CxTYPE(cx) == CXt_SUB)	369	if (CxTYPE (cx) == CXt_SUB)
354	{	370	{
355	CV *cv = cx->blk_sub.cv;	371	CV *cv = cx->blk_sub.cv;
		372
356	if (CvDEPTH(cv))	373	if (CvDEPTH (cv))
357	{	374	{
358	EXTEND (SP, CvDEPTH(cv)*2);	375	EXTEND (SP, 3);
359
360	while (--CvDEPTH(cv))
361	{
362	/* this tells the restore code to increment CvDEPTH */
363	PUSHs (Nullsv);
364	PUSHs ((SV *)cv);
365	}
366
367	PUSHs ((SV *)CvPADLIST(cv));	376	PUSHs ((SV *)CvPADLIST (cv));
		377	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	378	PUSHs ((SV *)cv);
369		379
		380	CvDEPTH (cv) = 0;
370	get_padlist (aTHX_ cv);	381	get_padlist (cv);
371	}	382	}
372	}	383	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE(cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	384	}
382		385
383	if (top_si->si_type == PERLSI_MAIN)	386	if (top_si->si_type == PERLSI_MAIN)
384	break;	387	break;
385		388
…		…
389	}	392	}
390		393
391	PUTBACK;	394	PUTBACK;
392	}	395	}
393		396
394	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	397	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
395	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	398	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	399	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		400	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
397		401
398	c->dowarn = PL_dowarn;	402	#define VAR(name,type)c->name = PL_ ## name;
399	c->in_eval = PL_in_eval;	403	# include "state.h"
400		404	#undef VAR
401	c->curstackinfo = PL_curstackinfo;
402	c->curstack = PL_curstack;
403	c->mainstack = PL_mainstack;
404	c->stack_sp = PL_stack_sp;
405	c->op = PL_op;
406	c->curpad = PL_curpad;
407	c->comppad = PL_comppad;
408	c->compcv = PL_compcv;
409	c->stack_base = PL_stack_base;
410	c->stack_max = PL_stack_max;
411	c->tmps_stack = PL_tmps_stack;
412	c->tmps_floor = PL_tmps_floor;
413	c->tmps_ix = PL_tmps_ix;
414	c->tmps_max = PL_tmps_max;
415	c->markstack = PL_markstack;
416	c->markstack_ptr = PL_markstack_ptr;
417	c->markstack_max = PL_markstack_max;
418	c->scopestack = PL_scopestack;
419	c->scopestack_ix = PL_scopestack_ix;
420	c->scopestack_max = PL_scopestack_max;
421	c->savestack = PL_savestack;
422	c->savestack_ix = PL_savestack_ix;
423	c->savestack_max = PL_savestack_max;
424	#if PERL_VERSION < 9
425	c->retstack = PL_retstack;
426	c->retstack_ix = PL_retstack_ix;
427	c->retstack_max = PL_retstack_max;
428	#endif
429	c->curpm = PL_curpm;
430	c->curcop = PL_curcop;
431	c->top_env = PL_top_env;
432	}	405	}
433		406
434	/*	407	/*
435	* allocate various perl stacks. This is an exact copy	408	* allocate various perl stacks. This is an exact copy
436	* of perl.c:init_stacks, except that it uses less memory	409	* of perl.c:init_stacks, except that it uses less memory
437	* on the (sometimes correct) assumption that coroutines do	410	* on the (sometimes correct) assumption that coroutines do
438	* not usually need a lot of stackspace.	411	* not usually need a lot of stackspace.
439	*/	412	*/
		413	#if PREFER_PERL_FUNCTIONS
		414	# define coro_init_stacks init_stacks
		415	#else
440	static void	416	static void
441	coro_init_stacks (pTHX)	417	coro_init_stacks ()
442	{	418	{
443	LOCK;
444
445	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
446	PL_curstackinfo->si_type = PERLSI_MAIN;	420	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	421	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	422	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		423
450	PL_stack_base = AvARRAY(PL_curstack);	424	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	425	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	426	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		427
454	New(50,PL_tmps_stack,96,SV*);	428	New(50,PL_tmps_stack,128,SV*);
455	PL_tmps_floor = -1;	429	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	430	PL_tmps_ix = -1;
457	PL_tmps_max = 96;	431	PL_tmps_max = 128;
458		432
459	New(54,PL_markstack,16,I32);	433	New(54,PL_markstack,32,I32);
460	PL_markstack_ptr = PL_markstack;	434	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 16;	435	PL_markstack_max = PL_markstack + 32;
462		436
463	#ifdef SET_MARK_OFFSET	437	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	438	SET_MARK_OFFSET;
465	#endif	439	#endif
466		440
467	New(54,PL_scopestack,16,I32);	441	New(54,PL_scopestack,32,I32);
468	PL_scopestack_ix = 0;	442	PL_scopestack_ix = 0;
469	PL_scopestack_max = 16;	443	PL_scopestack_max = 32;
470		444
471	New(54,PL_savestack,96,ANY);	445	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	446	PL_savestack_ix = 0;
473	PL_savestack_max = 96;	447	PL_savestack_max = 64;
474		448
475	#if PERL_VERSION < 9	449	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,8,OP*);	450	New(54,PL_retstack,16,OP*);
477	PL_retstack_ix = 0;	451	PL_retstack_ix = 0;
478	PL_retstack_max = 8;	452	PL_retstack_max = 16;
479	#endif	453	#endif
480
481	UNLOCK;
482	}	454	}
		455	#endif
483		456
484	/*	457	/*
485	* destroy the stacks, the callchain etc...	458	* destroy the stacks, the callchain etc...
486	*/	459	*/
487	static void	460	static void
488	destroy_stacks(pTHX)	461	coro_destroy_stacks ()
489	{	462	{
490	if (!IN_DESTRUCT)	463	if (!IN_DESTRUCT)
491	{	464	{
492	/* is this ugly, I ask? */	465	/* restore all saved variables and stuff */
493	LEAVE_SCOPE (0);	466	LEAVE_SCOPE (0);
		467	assert (PL_tmps_floor == -1);
494		468
495	/* sure it is, but more important: is it correct?? :/ */	469	/* free all temporaries */
496	FREETMPS;	470	FREETMPS;
		471	assert (PL_tmps_ix == -1);
497		472
498	/POPSTACK_TO (PL_mainstack);//D//use/	473	POPSTACK_TO (PL_mainstack);
499	}	474	}
500		475
501	while (PL_curstackinfo->si_next)	476	while (PL_curstackinfo->si_next)
502	PL_curstackinfo = PL_curstackinfo->si_next;	477	PL_curstackinfo = PL_curstackinfo->si_next;
503		478
504	while (PL_curstackinfo)	479	while (PL_curstackinfo)
505	{	480	{
506	PERL_SI *p = PL_curstackinfo->si_prev;	481	PERL_SI *p = PL_curstackinfo->si_prev;
507		482
508	{ /D//remove/
509	dSP;
510	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
511	PUTBACK; /* possibly superfluous */
512	}
513
514	if (!IN_DESTRUCT)	483	if (!IN_DESTRUCT)
515	{
516	dounwind (-1);/D//remove/
517	SvREFCNT_dec (PL_curstackinfo->si_stack);	484	SvREFCNT_dec (PL_curstackinfo->si_stack);
518	}
519		485
520	Safefree (PL_curstackinfo->si_cxstack);	486	Safefree (PL_curstackinfo->si_cxstack);
521	Safefree (PL_curstackinfo);	487	Safefree (PL_curstackinfo);
522	PL_curstackinfo = p;	488	PL_curstackinfo = p;
523	}	489	}
524		490
525	Safefree (PL_tmps_stack);	491	Safefree (PL_tmps_stack);
526	Safefree (PL_markstack);	492	Safefree (PL_markstack);
527	Safefree (PL_scopestack);	493	Safefree (PL_scopestack);
528	Safefree (PL_savestack);	494	Safefree (PL_savestack);
529	#if PERL_VERSION < 9	495	#if !PERL_VERSION_ATLEAST (5,9,0)
530	Safefree (PL_retstack);	496	Safefree (PL_retstack);
531	#endif	497	#endif
532	}	498	}
533		499
534	static void	500	static void
535	allocate_stack (Coro__State ctx, int alloc)	501	setup_coro (struct coro *coro)
536	{
537	coro_stack *stack;
538
539	New (0, stack, 1, coro_stack);
540
541	stack->refcnt = 1;
542	stack->usecnt = 1;
543	stack->gencnt = ctx->gencnt = 0;
544
545	if (alloc)
546	{
547	#if HAVE_MMAP
548	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr != (void *)-1)
551	{
552	# if STACKGUARD
553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
554	# endif
555	}
556	else
557	#endif
558	{
559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
560	New (0, stack->sptr, STACKSIZE, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}
568
569	static void
570	deallocate_stack (Coro__State ctx)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#endif
585	Safefree (stack->sptr);
586
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	502	{
597	/*	503	/*
598	* emulate part of the perl startup here.	504	* emulate part of the perl startup here.
599	*/	505	*/
600	dTHX;	506
		507	coro_init_stacks ();
		508
		509	PL_curcop = &PL_compiling;
		510	PL_in_eval = EVAL_NULL;
		511	PL_curpm = 0;
		512	PL_localizing = 0;
		513	PL_dirty = 0;
		514	PL_restartop = 0;
		515
		516	{
		517	dSP;
		518	LOGOP myop;
		519
		520	SvREFCNT_dec (GvAV (PL_defgv));
		521	GvAV (PL_defgv) = coro->args; coro->args = 0;
		522
		523	Zero (&myop, 1, LOGOP);
		524	myop.op_next = Nullop;
		525	myop.op_flags = OPf_WANT_VOID;
		526
		527	PUSHMARK (SP);
		528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
		529	PUTBACK;
		530	PL_op = (OP *)&myop;
		531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		532	SPAGAIN;
		533	}
		534
		535	ENTER; /* necessary e.g. for dounwind */
		536	}
		537
		538	static void
		539	free_coro_mortal ()
		540	{
		541	if (coro_mortal)
		542	{
		543	SvREFCNT_dec (coro_mortal);
		544	coro_mortal = 0;
		545	}
		546	}
		547
		548	/* inject a fake call to Coro::State::_cctx_init into the execution */
		549	static void NOINLINE
		550	prepare_cctx (coro_cctx *cctx)
		551	{
601	dSP;	552	dSP;
602	Coro__State ctx = (Coro__State)arg;	553	LOGOP myop;
603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
604		554
605	coro_init_stacks (aTHX);	555	Zero (&myop, 1, LOGOP);
606	/PL_curcop = 0;/	556	myop.op_next = PL_op;
607	/PL_in_eval = PL_in_eval;/ /* inherit */	557	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
608	SvREFCNT_dec (GvAV (PL_defgv));
609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
610		558
		559	PUSHMARK (SP);
		560	EXTEND (SP, 2);
		561	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
		562	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
		563	PUTBACK;
		564	PL_op = (OP *)&myop;
		565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
611	SPAGAIN;	566	SPAGAIN;
612
613	if (ctx->stack)
614	{
615	ctx->cursp = 0;
616
617	PUSHMARK(SP);
618	PUTBACK;
619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
620
621	if (SvTRUE (ERRSV))
622	croak (NULL);
623	else
624	croak ("FATAL: CCTXT coroutine returned!");
625	}
626	else
627	{
628	UNOP myop;
629
630	PL_op = (OP *)&myop;
631
632	Zero(&myop, 1, UNOP);
633	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;
635
636	PUSHMARK(SP);
637	XPUSHs (sub_init);
638	/*
639	* the next line is slightly wrong, as PL_op->op_next
640	* is actually being executed so we skip the first op.
641	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)
644	*/
645	PUTBACK;
646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;
648
649	ENTER; /* necessary e.g. for dounwind */
650	}
651	}	567	}
652		568
653	static void	569	static void
654	continue_coro (void *arg)	570	coro_run (void *arg)
655	{	571	{
		572	/* coro_run is the alternative tail of transfer(), so unlock here. */
		573	UNLOCK;
		574
656	/*	575	/*
657	* this is a _very_ stripped down perl interpreter ;)	576	* this is a _very_ stripped down perl interpreter ;)
658	*/	577	*/
659	dTHX;
660	Coro__State ctx = (Coro__State)arg;
661
662	PL_top_env = &ctx->start_env;	578	PL_top_env = &PL_start_env;
663		579
664	ctx->cursp = 0;	580	/* inject call to cctx_init */
665	PL_op = PL_op->op_next;	581	prepare_cctx ((coro_cctx *)arg);
666	CALLRUNOPS(aTHX);
667		582
		583	/* somebody will hit me for both perl_run and PL_restartop */
		584	PL_restartop = PL_op;
		585	perl_run (PL_curinterp);
		586
		587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
668	abort ();	588	abort ();
669	}	589	}
670		590
		591	static coro_cctx *
		592	cctx_new ()
		593	{
		594	coro_cctx *cctx;
		595
		596	++cctx_count;
		597
		598	Newz (0, cctx, 1, coro_cctx);
		599
		600	#if HAVE_MMAP
		601
		602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		603	/* mmap supposedly does allocate-on-write for us */
		604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		605
		606	if (cctx->sptr == (void *)-1)
		607	{
		608	perror ("FATAL: unable to mmap stack for coroutine");
		609	_exit (EXIT_FAILURE);
		610	}
		611
		612	# if STACKGUARD
		613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		614	# endif
		615
		616	#else
		617
		618	cctx->ssize = STACKSIZE * (long)sizeof (long);
		619	New (0, cctx->sptr, STACKSIZE, long);
		620
		621	if (!cctx->sptr)
		622	{
		623	perror ("FATAL: unable to malloc stack for coroutine");
		624	_exit (EXIT_FAILURE);
		625	}
		626
		627	#endif
		628
		629	#if USE_VALGRIND
		630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
		631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
		632	cctx->ssize + (char *)cctx->sptr
		633	);
		634	#endif
		635
		636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		637
		638	return cctx;
		639	}
		640
671	static void	641	static void
		642	cctx_destroy (coro_cctx *cctx)
		643	{
		644	if (!cctx)
		645	return;
		646
		647	--cctx_count;
		648
		649	#if USE_VALGRIND
		650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		651	#endif
		652
		653	#if HAVE_MMAP
		654	munmap (cctx->sptr, cctx->ssize);
		655	#else
		656	Safefree (cctx->sptr);
		657	#endif
		658
		659	Safefree (cctx);
		660	}
		661
		662	static coro_cctx *
		663	cctx_get ()
		664	{
		665	coro_cctx *cctx;
		666
		667	if (cctx_first)
		668	{
		669	cctx = cctx_first;
		670	cctx_first = cctx->next;
		671	--cctx_idle;
		672	}
		673	else
		674	{
		675	cctx = cctx_new ();
		676	PL_op = PL_op->op_next;
		677	}
		678
		679	return cctx;
		680	}
		681
		682	static void
		683	cctx_put (coro_cctx *cctx)
		684	{
		685	/* free another cctx if overlimit */
		686	if (cctx_idle >= MAX_IDLE_CCTX)
		687	{
		688	coro_cctx *first = cctx_first;
		689	cctx_first = first->next;
		690	--cctx_idle;
		691
		692	assert (!first->inuse);
		693	cctx_destroy (first);
		694	}
		695
		696	++cctx_idle;
		697	cctx->next = cctx_first;
		698	cctx_first = cctx;
		699	}
		700
		701	/* never call directly, always through the coro_state_transfer global variable */
		702	static void NOINLINE
672	transfer (pTHX_ struct coro prev, struct coro next, int flags)	703	transfer (struct coro prev, struct coro next)
673	{	704	{
674	dSTACKLEVEL;	705	dSTACKLEVEL;
675		706
		707	/* sometimes transfer is only called to set idle_sp */
		708	if (!next)
		709	{
		710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */
		712	}
676	if (prev != next)	713	else if (prev != next)
677	{	714	{
678	if (next->mainstack)	715	coro_cctx *prev__cctx;
		716
		717	if (prev->flags & CF_NEW)
679	{	718	{
680	LOCK;	719	/* create a new empty context */
681	SAVE (prev, flags);	720	Newz (0, prev->cctx, 1, coro_cctx);
682	LOAD (next);	721	prev->cctx->inuse = 1;
683	UNLOCK;	722	prev->flags &= ~CF_NEW;
684		723	prev->flags \|= CF_RUNNING;
685	/* mark this state as in-use */
686	next->mainstack = 0;
687	next->tmps_ix = -2;
688
689	/* stacklevel changed? if yes, grab the stack for us! */
690	if (flags & TRANSFER_SAVE_CCTXT)
691	{
692	if (!prev->stack)
693	allocate_stack (prev, 0);
694	else if (prev->cursp != stacklevel
695	&& prev->stack->usecnt > 1)
696	{
697	prev->gencnt = ++prev->stack->gencnt;
698	prev->stack->usecnt = 1;
699	}
700
701	/* has our stack been invalidated? */
702	if (next->stack && next->stack->gencnt != next->gencnt)
703	{
704	deallocate_stack (next);
705	allocate_stack (next, 1);
706	coro_create (&(next->stack->cctx),
707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));
709	}
710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
712	prev->cursp = stacklevel;
713	/* don't add any code here */
714	}
715	else
716	next->cursp = stacklevel;
717	}	724	}
718	else if (next->tmps_ix == -2)	725
719	croak ("tried to transfer to running coroutine");	726	/TODO: must not croak here /
		727	if (!prev->flags & CF_RUNNING)
		728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		729
		730	if (next->flags & CF_RUNNING)
		731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		732
		733	prev->flags &= ~CF_RUNNING;
		734	next->flags \|= CF_RUNNING;
		735
		736	LOCK;
		737
		738	if (next->flags & CF_NEW)
		739	{
		740	/* need to start coroutine */
		741	next->flags &= ~CF_NEW;
		742	/* first get rid of the old state */
		743	save_perl (prev);
		744	/* setup coroutine call */
		745	setup_coro (next);
		746	/* need a new stack */
		747	assert (!next->cctx);
		748	}
720	else	749	else
721	{	750	{
722	LOCK;	751	/* coroutine already started */
723	SAVE (prev, -1); /* first get rid of the old state */	752	save_perl (prev);
724	UNLOCK;	753	load_perl (next);
725
726	if (flags & TRANSFER_SAVE_CCTXT)
727	{
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732	{
733	PL_top_env = &next->start_env;
734
735	setup_coro (next);
736	next->cursp = stacklevel;
737
738	prev->stack->refcnt++;
739	prev->stack->usecnt++;
740	next->stack = prev->stack;
741	next->gencnt = prev->gencnt;
742	}
743	else
744	{
745	assert (!next->stack);
746	allocate_stack (next, 1);
747	coro_create (&(next->stack->cctx),
748	setup_coro, (void *)next,
749	next->stack->sptr, labs (next->stack->ssize));
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	}
755	else
756	{
757	setup_coro (next);
758	next->cursp = stacklevel;
759	}
760	}	754	}
		755
		756	prev__cctx = prev->cctx;
		757
		758	/* possibly "free" the cctx */
		759	if (prev__cctx->idle_sp == STACKLEVEL)
		760	{
		761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		762	assert (PL_top_env == prev__cctx->top_env);
		763
		764	prev->cctx = 0;
		765
		766	cctx_put (prev__cctx);
		767	prev__cctx->inuse = 0;
		768	}
		769
		770	if (!next->cctx)
		771	{
		772	next->cctx = cctx_get ();
		773	assert (!next->cctx->inuse);
		774	next->cctx->inuse = 1;
		775	}
		776
		777	if (prev__cctx != next->cctx)
		778	{
		779	prev__cctx->top_env = PL_top_env;
		780	PL_top_env = next->cctx->top_env;
		781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
		782	}
		783
		784	free_coro_mortal ();
		785
		786	UNLOCK;
761	}	787	}
		788	}
762		789
763	LOCK;	790	struct transfer_args
764	if (coro_mortal)	791	{
		792	struct coro prev, next;
		793	};
		794
		795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
		796
		797	static void
		798	coro_state_destroy (struct coro *coro)
		799	{
		800	if (coro->refcnt--)
		801	return;
		802
		803	if (coro->mainstack && coro->mainstack != main_mainstack)
765	{	804	{
766	SvREFCNT_dec (coro_mortal);	805	struct coro temp;
		806	Zero (&temp, 1, struct coro);
		807	temp.save = CORO_SAVE_ALL;
		808
		809	if (coro->flags & CF_RUNNING)
		810	croak ("FATAL: tried to destroy currently running coroutine");
		811
		812	save_perl (&temp);
		813	load_perl (coro);
		814
		815	coro_destroy_stacks ();
		816
		817	load_perl (&temp); /* this will get rid of defsv etc.. */
		818
767	coro_mortal = 0;	819	coro->mainstack = 0;
768	}	820	}
769	UNLOCK;
770	}
771		821
772	#define SV_CORO(sv,func) \	822	cctx_destroy (coro->cctx);
773	do { \	823	SvREFCNT_dec (coro->args);
774	if (SvROK (sv)) \	824	Safefree (coro);
775	sv = SvRV (sv); \	825	}
776	\
777	if (SvTYPE (sv) == SVt_PVHV) \
778	{ \
779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
780	\
781	if (!he) \
782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
783	\
784	(sv) = SvRV (HeVAL(he)); \
785	} \
786	\
787	/* must also be changed inside Coro::Cont::yield */ \
788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
790	\
791	} while(0)
792		826
793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
794
795	static void	827	static int
		828	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		829	{
		830	struct coro coro = (struct coro )mg->mg_ptr;
		831	mg->mg_ptr = 0;
		832
		833	coro_state_destroy (coro);
		834
		835	return 0;
		836	}
		837
		838	static int
		839	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		840	{
		841	struct coro coro = (struct coro )mg->mg_ptr;
		842
		843	++coro->refcnt;
		844
		845	return 0;
		846	}
		847
		848	static MGVTBL coro_state_vtbl = {
		849	0, 0, 0, 0,
		850	coro_state_clear,
		851	0,
		852	#ifdef MGf_DUP
		853	coro_state_dup,
		854	#else
		855	# define MGf_DUP 0
		856	#endif
		857	};
		858
		859	static struct coro *
		860	SvSTATE (SV *coro)
		861	{
		862	HV *stash;
		863	MAGIC *mg;
		864
		865	if (SvROK (coro))
		866	coro = SvRV (coro);
		867
		868	stash = SvSTASH (coro);
		869	if (stash != coro_stash && stash != coro_state_stash)
		870	{
		871	/* very slow, but rare, check */
		872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		873	croak ("Coro::State object required");
		874	}
		875
		876	mg = SvMAGIC (coro);
		877	assert (mg->mg_type == PERL_MAGIC_ext);
		878	return (struct coro *)mg->mg_ptr;
		879	}
		880
		881	static void
		882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		883	{
		884	ta->prev = SvSTATE (prev_sv);
		885	ta->next = SvSTATE (next_sv);
		886	}
		887
		888	static void
796	api_transfer(pTHX_ SV prev, SV next, int flags)	889	api_transfer (SV prev_sv, SV next_sv)
797	{	890	{
798	SV_CORO (prev, "Coro::transfer");	891	struct transfer_args ta;
799	SV_CORO (next, "Coro::transfer");
800		892
801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	893	prepare_transfer (&ta, prev_sv, next_sv);
		894	TRANSFER (ta);
		895	}
		896
		897	static int
		898	api_save (SV *coro_sv, int new_save)
		899	{
		900	struct coro *coro = SvSTATE (coro_sv);
		901	int old_save = coro->save;
		902
		903	if (new_save >= 0)
		904	coro->save = new_save;
		905
		906	return old_save;
802	}	907	}
803		908
804	/ Coro ******************************************************************/	909	/ Coro ******************************************************************/
805		910
806	#define PRIO_MAX 3	911	#define PRIO_MAX 3
…		…
809	#define PRIO_LOW -1	914	#define PRIO_LOW -1
810	#define PRIO_IDLE -3	915	#define PRIO_IDLE -3
811	#define PRIO_MIN -4	916	#define PRIO_MIN -4
812		917
813	/* for Coro.pm */	918	/* for Coro.pm */
814	static GV coro_current, coro_idle;	919	static SV *coro_current;
815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	921	static int coro_nready;
817		922
818	static void	923	static void
819	coro_enq (pTHX_ SV *sv)	924	coro_enq (SV *coro_sv)
820	{	925	{
821	SV **xprio;
822	int prio;
823
824	if (SvTYPE (sv) != SVt_PVHV)
825	croak ("Coro::ready tried to enqueue something that is not a coroutine");
826
827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
829
830	prio = prio > PRIO_MAX ? PRIO_MAX
831	: prio < PRIO_MIN ? PRIO_MIN
832	: prio;
833
834	av_push (coro_ready [prio - PRIO_MIN], sv);	926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
835	coro_nready++;	927	coro_nready++;
836	}	928	}
837		929
838	static SV *	930	static SV *
839	coro_deq (pTHX_ int min_prio)	931	coro_deq (int min_prio)
840	{	932	{
841	int prio = PRIO_MAX - PRIO_MIN;	933	int prio = PRIO_MAX - PRIO_MIN;
842		934
843	min_prio -= PRIO_MIN;	935	min_prio -= PRIO_MIN;
844	if (min_prio < 0)	936	if (min_prio < 0)
845	min_prio = 0;	937	min_prio = 0;
846		938
847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
848	if (av_len (coro_ready[prio]) >= 0)	940	if (AvFILLp (coro_ready [prio]) >= 0)
849	{	941	{
850	coro_nready--;	942	coro_nready--;
851	return av_shift (coro_ready[prio]);	943	return av_shift (coro_ready [prio]);
852	}	944	}
853		945
854	return 0;	946	return 0;
855	}	947	}
856		948
857	static void	949	static int
858	api_ready (SV *coro)	950	api_ready (SV *coro_sv)
859	{	951	{
860	dTHX;	952	struct coro *coro;
861		953
862	if (SvROK (coro))	954	if (SvROK (coro_sv))
863	coro = SvRV (coro);	955	coro_sv = SvRV (coro_sv);
		956
		957	coro = SvSTATE (coro_sv);
		958
		959	if (coro->flags & CF_READY)
		960	return 0;
		961
		962	#if 0 /* this is actually harmless */
		963	if (coro->flags & CF_RUNNING)
		964	croak ("Coro::ready called on currently running coroutine");
		965	#endif
		966
		967	coro->flags \|= CF_READY;
864		968
865	LOCK;	969	LOCK;
866	coro_enq (aTHX_ SvREFCNT_inc (coro));	970	coro_enq (SvREFCNT_inc (coro_sv));
867	UNLOCK;	971	UNLOCK;
		972
		973	return 1;
		974	}
		975
		976	static int
		977	api_is_ready (SV *coro_sv)
		978	{
		979	return !!SvSTATE (coro_sv)->flags & CF_READY;
		980	}
		981
		982	static void
		983	prepare_schedule (struct transfer_args *ta)
		984	{
		985	SV prev, next;
		986
		987	for (;;)
		988	{
		989	LOCK;
		990	next = coro_deq (PRIO_MIN);
		991	UNLOCK;
		992
		993	if (next)
		994	break;
		995
		996	{
		997	dSP;
		998
		999	ENTER;
		1000	SAVETMPS;
		1001
		1002	PUSHMARK (SP);
		1003	PUTBACK;
		1004	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1005
		1006	FREETMPS;
		1007	LEAVE;
		1008	}
		1009	}
		1010
		1011	prev = SvRV (coro_current);
		1012	SvRV_set (coro_current, next);
		1013
		1014	/* free this only after the transfer */
		1015	LOCK;
		1016	free_coro_mortal ();
		1017	UNLOCK;
		1018	coro_mortal = prev;
		1019
		1020	assert (!SvROK(prev));//D
		1021	assert (!SvROK(next));//D
		1022
		1023	ta->prev = SvSTATE (prev);
		1024	ta->next = SvSTATE (next);
		1025
		1026	assert (ta->next->flags & CF_READY);
		1027	ta->next->flags &= ~CF_READY;
		1028	}
		1029
		1030	static void
		1031	prepare_cede (struct transfer_args *ta)
		1032	{
		1033	api_ready (coro_current);
		1034
		1035	prepare_schedule (ta);
868	}	1036	}
869		1037
870	static void	1038	static void
871	api_schedule (void)	1039	api_schedule (void)
872	{	1040	{
873	dTHX;	1041	struct transfer_args ta;
874		1042
875	SV prev, next;	1043	prepare_schedule (&ta);
876		1044	TRANSFER (ta);
877	LOCK;
878
879	prev = SvRV (GvSV (coro_current));
880	next = coro_deq (aTHX_ PRIO_MIN);
881
882	if (!next)
883	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
884
885	/* free this only after the transfer */
886	coro_mortal = prev;
887	SV_CORO (prev, "Coro::schedule");
888
889	SvRV (GvSV (coro_current)) = next;
890
891	SV_CORO (next, "Coro::schedule");
892
893	UNLOCK;
894
895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
897	}	1045	}
898		1046
899	static void	1047	static void
900	api_cede (void)	1048	api_cede (void)
901	{	1049	{
902	dTHX;	1050	struct transfer_args ta;
903		1051
904	LOCK;	1052	prepare_cede (&ta);
905	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	1053	TRANSFER (ta);
906	UNLOCK;
907
908	api_schedule ();
909	}	1054	}
910		1055
911	MODULE = Coro::State PACKAGE = Coro::State	1056	MODULE = Coro::State PACKAGE = Coro::State
912		1057
913	PROTOTYPES: ENABLE	1058	PROTOTYPES: DISABLE
914		1059
915	BOOT:	1060	BOOT:
916	{ /* {} necessary for stoopid perl-5.6.x */	1061	{
917	#ifdef USE_ITHREADS	1062	#ifdef USE_ITHREADS
918	MUTEX_INIT (&coro_mutex);	1063	MUTEX_INIT (&coro_mutex);
919	#endif	1064	#endif
920	BOOT_PAGESIZE;	1065	BOOT_PAGESIZE;
921		1066
922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1067	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
925		1068
926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1069	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1070	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1071	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1072	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1073	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
930		1074
931	main_mainstack = PL_mainstack;	1075	main_mainstack = PL_mainstack;
932		1076
933	coroapi.ver = CORO_API_VERSION;	1077	coroapi.ver = CORO_API_VERSION;
934	coroapi.transfer = api_transfer;	1078	coroapi.transfer = api_transfer;
935	}
936		1079
937	Coro::State	1080	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
938	_newprocess(args)	1081	}
939	SV * args	1082
940	PROTOTYPE: $	1083	SV *
		1084	new (char *klass, ...)
941	CODE:	1085	CODE:
942	Coro__State coro;	1086	{
		1087	struct coro *coro;
		1088	HV *hv;
		1089	int i;
943		1090
944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
945	croak ("Coro::State::_newprocess expects an arrayref");
946
947	Newz (0, coro, 1, struct coro);	1091	Newz (0, coro, 1, struct coro);
		1092	coro->args = newAV ();
		1093	coro->save = CORO_SAVE_ALL;
		1094	coro->flags = CF_NEW;
948		1095
949	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1096	hv = newHV ();
950	/coro->mainstack = 0; //actual work is done inside transfer /	1097	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
951	/coro->stack = 0;/	1098	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
952		1099
953	/* same as JMPENV_BOOTSTRAP */	1100	for (i = 1; i < items; i++)
954	/* we might be able to recycle start_env, but safe is safe */	1101	av_push (coro->args, newSVsv (ST (i)));
955	/Zero(&coro->start_env, 1, JMPENV);/	1102	}
956	coro->start_env.je_ret = -1;
957	coro->start_env.je_mustcatch = TRUE;
958
959	RETVAL = coro;
960	OUTPUT:	1103	OUTPUT:
961	RETVAL	1104	RETVAL
962		1105
		1106	int
		1107	save (SV *coro, int new_save = -1)
		1108	CODE:
		1109	RETVAL = api_save (coro, new_save);
		1110	OUTPUT:
		1111	RETVAL
		1112
963	void	1113	void
964	transfer(prev, next, flags)	1114	_set_stacklevel (...)
965	SV *prev	1115	ALIAS:
966	SV *next	1116	Coro::State::transfer = 1
967	int flags	1117	Coro::schedule = 2
968	PROTOTYPE: @	1118	Coro::cede = 3
969	CODE:	1119	CODE:
970	PUTBACK;	1120	{
971	SV_CORO (next, "Coro::transfer");	1121	struct transfer_args ta;
972	SV_CORO (prev, "Coro::transfer");	1122
973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1123	switch (ix)
974	SPAGAIN;	1124	{
		1125	case 0:
		1126	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1127	ta.next = 0;
		1128	break;
		1129
		1130	case 1:
		1131	if (items != 2)
		1132	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
		1133
		1134	prepare_transfer (&ta, ST (0), ST (1));
		1135	break;
		1136
		1137	case 2:
		1138	prepare_schedule (&ta);
		1139	break;
		1140
		1141	case 3:
		1142	prepare_cede (&ta);
		1143	break;
		1144	}
		1145
		1146	TRANSFER (ta);
		1147	}
975		1148
976	void	1149	void
977	DESTROY(coro)	1150	_clone_state_from (SV dst, SV src)
978	Coro::State coro	1151	CODE:
979	CODE:	1152	{
		1153	struct coro *coro_src = SvSTATE (src);
980		1154
981	if (coro->mainstack && coro->mainstack != main_mainstack)	1155	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
982	{
983	struct coro temp;
984		1156
985	PUTBACK;	1157	++coro_src->refcnt;
986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1158	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
987	LOAD (aTHX_ coro);	1159	}
988	SPAGAIN;
989
990	destroy_stacks (aTHX);
991
992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
993	SPAGAIN;
994
995	coro->mainstack = 0;
996	}
997
998	deallocate_stack (coro);
999	SvREFCNT_dec (coro->args);
1000	Safefree (coro);
1001		1160
1002	void	1161	void
1003	_exit(code)	1162	_exit (code)
1004	int code	1163	int code
1005	PROTOTYPE: $	1164	PROTOTYPE: $
1006	CODE:	1165	CODE:
1007	_exit (code);	1166	_exit (code);
1008		1167
1009	MODULE = Coro::State PACKAGE = Coro::Cont	1168	int
		1169	cctx_count ()
		1170	CODE:
		1171	RETVAL = cctx_count;
		1172	OUTPUT:
		1173	RETVAL
1010		1174
1011	# this is slightly dirty (should expose a c-level api)	1175	int
1012		1176	cctx_idle ()
1013	void	1177	CODE:
1014	yield(...)	1178	RETVAL = cctx_idle;
1015	PROTOTYPE: @	1179	OUTPUT:
1016	CODE:	1180	RETVAL
1017	SV *yieldstack;
1018	SV *sv;
1019	AV *defav = GvAV (PL_defgv);
1020	struct coro prev, next;
1021
1022	yieldstack = *hv_fetch (
1023	(HV *)SvRV (GvSV (coro_current)),
1024	"yieldstack", sizeof ("yieldstack") - 1,
1025	0
1026	);
1027
1028	/* set up @_ -- ugly */
1029	av_clear (defav);
1030	av_fill (defav, items - 1);
1031	while (items--)
1032	av_store (defav, items, SvREFCNT_inc (ST(items)));
1033
1034	sv = av_pop ((AV *)SvRV (yieldstack));
1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1037	SvREFCNT_dec (sv);
1038
1039	transfer (aTHX_ prev, next, 0);
1040		1181
1041	MODULE = Coro::State PACKAGE = Coro	1182	MODULE = Coro::State PACKAGE = Coro
1042		1183
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1184	BOOT:
1046	{	1185	{
1047	int i;	1186	int i;
		1187
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1188	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1189
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1190	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1191	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1192	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1193	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1194	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1195	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1196
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1197	coro_current = get_sv ("Coro::current", FALSE);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1198	SvREADONLY_on (coro_current);
1059		1199
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1200	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1061	coro_ready[i] = newAV ();	1201	coro_ready[i] = newAV ();
1062		1202
1063	{	1203	{
1064	SV *sv = perl_get_sv("Coro::API", 1);	1204	SV *sv = perl_get_sv("Coro::API", 1);
1065		1205
1066	coroapi.schedule = api_schedule;	1206	coroapi.schedule = api_schedule;
		1207	coroapi.save = api_save;
1067	coroapi.cede = api_cede;	1208	coroapi.cede = api_cede;
1068	coroapi.ready = api_ready;	1209	coroapi.ready = api_ready;
		1210	coroapi.is_ready = api_is_ready;
1069	coroapi.nready = &coro_nready;	1211	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1212	coroapi.current = coro_current;
1071		1213
1072	GCoroAPI = &coroapi;	1214	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1215	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1216	SvREADONLY_on (sv);
1075	}	1217	}
1076	}	1218	}
1077		1219
1078	#if !PERL_MICRO
1079
1080	void	1220	void
1081	ready(self)	1221	_set_current (SV *current)
1082	SV * self
1083	PROTOTYPE: $	1222	PROTOTYPE: $
1084	CODE:	1223	CODE:
1085	api_ready (self);	1224	SvREFCNT_dec (SvRV (coro_current));
1086		1225	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1087	#endif
1088		1226
1089	int	1227	int
		1228	prio (Coro::State coro, int newprio = 0)
		1229	ALIAS:
		1230	nice = 1
		1231	CODE:
		1232	{
		1233	RETVAL = coro->prio;
		1234
		1235	if (items > 1)
		1236	{
		1237	if (ix)
		1238	newprio += coro->prio;
		1239
		1240	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1241	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1242
		1243	coro->prio = newprio;
		1244	}
		1245	}
		1246
		1247	SV *
		1248	ready (SV *self)
		1249	PROTOTYPE: $
		1250	CODE:
		1251	RETVAL = boolSV (api_ready (self));
		1252	OUTPUT:
		1253	RETVAL
		1254
		1255	SV *
		1256	is_ready (SV *self)
		1257	PROTOTYPE: $
		1258	CODE:
		1259	RETVAL = boolSV (api_is_ready (self));
		1260	OUTPUT:
		1261	RETVAL
		1262
		1263	int
1090	nready(...)	1264	nready (...)
1091	PROTOTYPE:	1265	PROTOTYPE:
1092	CODE:	1266	CODE:
1093	RETVAL = coro_nready;	1267	RETVAL = coro_nready;
1094	OUTPUT:	1268	OUTPUT:
1095	RETVAL	1269	RETVAL
1096		1270
1097	void	1271	MODULE = Coro::State PACKAGE = Coro::AIO
1098	schedule(...)	1272
1099	PROTOTYPE:	1273	SV *
		1274	_get_state ()
1100	CODE:	1275	CODE:
1101	api_schedule ();
1102
1103	void
1104	cede(...)
1105	PROTOTYPE:
1106	CODE:
1107	api_cede ();
1108
1109	# and these are hacks
1110	SV *
1111	_aio_get_state ()
1112	CODE:
1113	{	1276	{
1114	struct {	1277	struct io_state *data;
1115	int errorno;
1116	int laststype;
1117	int laststatval;
1118	Stat_t statcache;
1119	} data;
1120		1278
		1279	RETVAL = newSV (sizeof (struct io_state));
		1280	data = (struct io_state *)SvPVX (RETVAL);
		1281	SvCUR_set (RETVAL, sizeof (struct io_state));
		1282	SvPOK_only (RETVAL);
		1283
1121	data.errorno = errno;	1284	data->errorno = errno;
1122	data.laststype = PL_laststype;	1285	data->laststype = PL_laststype;
1123	data.laststatval = PL_laststatval;	1286	data->laststatval = PL_laststatval;
1124	data.statcache = PL_statcache;	1287	data->statcache = PL_statcache;
1125
1126	RETVAL = newSVpvn ((char *)&data, sizeof data);
1127	}	1288	}
1128	OUTPUT:	1289	OUTPUT:
1129	RETVAL	1290	RETVAL
1130		1291
1131	void	1292	void
1132	_aio_set_state (char *data_)	1293	_set_state (char *data_)
1133	PROTOTYPE: $	1294	PROTOTYPE: $
1134	CODE:	1295	CODE:
1135	{	1296	{
1136	struct {	1297	struct io_state data = (void )data_;
1137	int errorno;
1138	int laststype;
1139	int laststatval;
1140	Stat_t statcache;
1141	} data = (void )data_;
1142		1298
1143	errno = data->errorno;	1299	errno = data->errorno;
1144	PL_laststype = data->laststype;	1300	PL_laststype = data->laststype;
1145	PL_laststatval = data->laststatval;	1301	PL_laststatval = data->laststatval;
1146	PL_statcache = data->statcache;	1302	PL_statcache = data->statcache;
1147	}	1303	}
		1304

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Comparing Coro/Coro/State.xs (file contents): Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs. Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC