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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.77 by root, Tue Oct 31 23:55:33 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 <errno.h>	70	/* 5.8.7 */
33		71	#ifndef SvRV_set
34	#ifdef HAVE_MMAP	72	# define SvRV_set(s,v) SvRV(s) = (v)
35	# include <unistd.h>
36	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS
38	# ifdef MAP_ANON
39	# define MAP_ANONYMOUS MAP_ANON
40	# else
41	# undef HAVE_MMAP
42	# endif
43	# endif	73	#endif
44	#endif
45		74
46	#define SUB_INIT "Coro::State::initialize"	75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	#define UCORO_STATE "_coro_state"	76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
48		87
49	/* 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
50	* 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
51	* and should be unique. */	90	* and should be unique. */
		91	#define dSTACKLEVEL int stacklevel
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	92	#define STACKLEVEL ((void *)&stacklevel)
53		93
54	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
55		95
56	#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))
57		105
58	#include "CoroAPI.h"	106	#include "CoroAPI.h"
59		107
60	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
61	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
…		…
64	#else	112	#else
65	# define LOCK (void)0	113	# define LOCK (void)0
66	# define UNLOCK (void)0	114	# define UNLOCK (void)0
67	#endif	115	#endif
68		116
		117	struct io_state
		118	{
		119	int errorno;
		120	I32 laststype;
		121	int laststatval;
		122	Stat_t statcache;
		123	};
		124
69	static struct CoroAPI coroapi;	125	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	126	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	127	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	128	static SV coro_mortal; / will be freed after next transfer */
75		129
76	/* this is actually not only the c stack but also c registers etc... */	130	static struct coro_cctx *cctx_first;
		131	static int cctx_count, cctx_idle;
		132
		133	/* this is a structure representing a c-level coroutine */
77	typedef struct {	134	typedef struct coro_cctx {
78	int refcnt; /* pointer reference counter */	135	struct coro_cctx *next;
79	int usecnt; /* shared by how many coroutines */
80	int gencnt; /* generation counter */
81		136
82	coro_context cctx;	137	/* the stack */
83
84	void *sptr;	138	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
86	} coro_stack;
87		140
		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;
		145	coro_context cctx;
		146
		147	int inuse;
		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	};
		159
		160	/* this is a structure representing a perl-level coroutine */
88	struct coro {	161	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */	162	/* the c coroutine allocated to this perl coroutine, if any */
90	JMPENV start_env;	163	coro_cctx *cctx;
91
92	/* the optional C context */
93	coro_stack *stack;
94	void *cursp;
95	int gencnt;
96
97	/* optionally saved, might be zero */
98	AV *defav;
99	SV *defsv;
100	SV *errsv;
101
102	/* saved global state not related to stacks */
103	U8 dowarn;
104	I32 in_eval;
105
106	/* the stacks and related info (callchain etc..) */
107	PERL_SI *curstackinfo;
108	AV *curstack;
109	AV *mainstack;
110	SV **stack_sp;
111	OP *op;
112	SV **curpad;
113	AV *comppad;
114	CV *compcv;
115	SV **stack_base;
116	SV **stack_max;
117	SV **tmps_stack;
118	I32 tmps_floor;
119	I32 tmps_ix;
120	I32 tmps_max;
121	I32 *markstack;
122	I32 *markstack_ptr;
123	I32 *markstack_max;
124	I32 *scopestack;
125	I32 scopestack_ix;
126	I32 scopestack_max;
127	ANY *savestack;
128	I32 savestack_ix;
129	I32 savestack_max;
130	OP **retstack;
131	I32 retstack_ix;
132	I32 retstack_max;
133	PMOP *curpm;
134	COP *curcop;
135	JMPENV *top_env;
136		164
137	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
138	AV *args;	166	AV *args;
		167	int refcnt;
		168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
		170
		171	/* optionally saved, might be zero */
		172	AV defav; / @_ */
		173	SV defsv; / $_ */
		174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
		177
		178	#define VAR(name,type) type name;
		179	# include "state.h"
		180	#undef VAR
		181
		182	/* coro process data */
		183	int prio;
139	};	184	};
140		185
141	typedef struct coro *Coro__State;	186	typedef struct coro *Coro__State;
142	typedef struct coro *Coro__State_or_hashref;	187	typedef struct coro *Coro__State_or_hashref;
143		188
144	static AV *	189	static AV *
145	coro_clone_padlist (pTHX_ CV *cv)	190	coro_clone_padlist (CV *cv)
146	{	191	{
147	AV *padlist = CvPADLIST (cv);	192	AV *padlist = CvPADLIST (cv);
148	AV newpadlist, newpad;	193	AV newpadlist, newpad;
149		194
150	newpadlist = newAV ();	195	newpadlist = newAV ();
151	AvREAL_off (newpadlist);	196	AvREAL_off (newpadlist);
		197	#if PERL_VERSION_ATLEAST (5,9,0)
		198	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		199	#else
152	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	200	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		201	#endif
153	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	202	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
154	--AvFILLp (padlist);	203	--AvFILLp (padlist);
155		204
156	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	205	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
157	av_store (newpadlist, 1, (SV *)newpad);	206	av_store (newpadlist, 1, (SV *)newpad);
158		207
159	return newpadlist;	208	return newpadlist;
160	}	209	}
161		210
162	static void	211	static void
163	free_padlist (pTHX_ AV *padlist)	212	free_padlist (AV *padlist)
164	{	213	{
165	/* may be during global destruction */	214	/* may be during global destruction */
166	if (SvREFCNT (padlist))	215	if (SvREFCNT (padlist))
167	{	216	{
168	I32 i = AvFILLp (padlist);	217	I32 i = AvFILLp (padlist);
…		…
189	AV *padlist;	238	AV *padlist;
190	AV av = (AV )mg->mg_obj;	239	AV av = (AV )mg->mg_obj;
191		240
192	/* casting is fun. */	241	/* casting is fun. */
193	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	242	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
194	free_padlist (aTHX_ padlist);	243	free_padlist (padlist);
195		244
196	SvREFCNT_dec (av);	245	SvREFCNT_dec (av);
197		246
198	return 0;	247	return 0;
199	}	248	}
200		249
201	#define PERL_MAGIC_coro PERL_MAGIC_ext	250	#define PERL_MAGIC_coro PERL_MAGIC_ext
202		251
203	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	252	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
204		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
205	/* the next two functions merely cache the padlists */	261	/* the next two functions merely cache the padlists */
206	static void	262	static void
207	get_padlist (pTHX_ CV *cv)	263	get_padlist (CV *cv)
208	{	264	{
209	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	265	MAGIC *mg = CORO_MAGIC (cv);
		266	AV *av;
210		267
211	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
212	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
213	else	270	else
214	{	271	{
215	#if 0	272	#if PREFER_PERL_FUNCTIONS
216	/* this should work - but it doesn't :( */	273	/* this is probably cleaner, but also slower? */
217	CV *cp = Perl_cv_clone (aTHX_ cv);	274	CV *cp = Perl_cv_clone (cv);
218	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
219	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
220	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
221	#else	278	#else
222	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	279	CvPADLIST (cv) = coro_clone_padlist (cv);
223	#endif	280	#endif
224	}	281	}
225	}	282	}
226		283
227	static void	284	static void
228	put_padlist (pTHX_ CV *cv)	285	put_padlist (CV *cv)
229	{	286	{
230	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	287	MAGIC *mg = CORO_MAGIC (cv);
		288	AV *av;
231		289
232	if (!mg)	290	if (!mg)
233	{	291	{
234	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	292	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
235	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	293	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
236	mg->mg_virtual = &vtbl_coro;	294	mg->mg_virtual = &vtbl_coro;
237	mg->mg_obj = (SV *)newAV ();	295	mg->mg_obj = (SV *)newAV ();
238	}	296	}
239		297
240	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);
241	}	304	}
242		305
243	#define SB do {	306	#define SB do {
244	#define SE } while (0)	307	#define SE } while (0)
245		308
246	#define LOAD(state) load_state(aTHX_ (state));
247	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
248
249	#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
250		310
251	static void	311	static void
252	load_state(pTHX_ Coro__State c)	312	load_perl (Coro__State c)
253	{	313	{
254	PL_dowarn = c->dowarn;	314	#define VAR(name,type) PL_ ## name = c->name;
255	PL_in_eval = c->in_eval;	315	# include "state.h"
256		316	#undef VAR
257	PL_curstackinfo = c->curstackinfo;
258	PL_curstack = c->curstack;
259	PL_mainstack = c->mainstack;
260	PL_stack_sp = c->stack_sp;
261	PL_op = c->op;
262	PL_curpad = c->curpad;
263	PL_comppad = c->comppad;
264	PL_compcv = c->compcv;
265	PL_stack_base = c->stack_base;
266	PL_stack_max = c->stack_max;
267	PL_tmps_stack = c->tmps_stack;
268	PL_tmps_floor = c->tmps_floor;
269	PL_tmps_ix = c->tmps_ix;
270	PL_tmps_max = c->tmps_max;
271	PL_markstack = c->markstack;
272	PL_markstack_ptr = c->markstack_ptr;
273	PL_markstack_max = c->markstack_max;
274	PL_scopestack = c->scopestack;
275	PL_scopestack_ix = c->scopestack_ix;
276	PL_scopestack_max = c->scopestack_max;
277	PL_savestack = c->savestack;
278	PL_savestack_ix = c->savestack_ix;
279	PL_savestack_max = c->savestack_max;
280	#if PERL_VERSION < 9
281	PL_retstack = c->retstack;
282	PL_retstack_ix = c->retstack_ix;
283	PL_retstack_max = c->retstack_max;
284	#endif
285	PL_curpm = c->curpm;
286	PL_curcop = c->curcop;
287	PL_top_env = c->top_env;
288		317
289	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
290	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
291	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	}
292		332
293	{	333	{
294	dSP;	334	dSP;
295	CV *cv;	335	CV *cv;
296		336
297	/* now do the ugly restore mess */	337	/* now do the ugly restore mess */
298	while ((cv = (CV *)POPs))	338	while ((cv = (CV *)POPs))
299	{	339	{
300	AV padlist = (AV )POPs;
301
302	if (padlist)
303	{
304	put_padlist (aTHX_ cv); /* mark this padlist as available */	340	put_padlist (cv); /* mark this padlist as available */
305	CvPADLIST(cv) = padlist;	341	CvDEPTH (cv) = PTR2IV (POPs);
306	}	342	CvPADLIST (cv) = (AV *)POPs;
307
308	++CvDEPTH(cv);
309	}	343	}
310		344
311	PUTBACK;	345	PUTBACK;
312	}	346	}
313	}	347	}
314		348
315	static void	349	static void
316	save_state(pTHX_ Coro__State c, int flags)	350	save_perl (Coro__State c)
317	{	351	{
318	{	352	{
319	dSP;	353	dSP;
320	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
321	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
324	/*	358	/*
325	* 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
326	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
327	*/	361	*/
328		362
		363	EXTEND (SP, 3 + 1);
329	PUSHs (Nullsv);	364	PUSHs (Nullsv);
330	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
331	for (;;)	366	for (;;)
332	{	367	{
333	while (cxix >= 0)	368	while (cxix >= 0)
334	{	369	{
335	PERL_CONTEXT *cx = &ccstk[cxix--];	370	PERL_CONTEXT *cx = &ccstk[cxix--];
336		371
337	if (CxTYPE(cx) == CXt_SUB)	372	if (CxTYPE (cx) == CXt_SUB)
338	{	373	{
339	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
		375
340	if (CvDEPTH(cv))	376	if (CvDEPTH (cv))
341	{	377	{
342	EXTEND (SP, CvDEPTH(cv)*2);	378	EXTEND (SP, 3);
343
344	while (--CvDEPTH(cv))
345	{
346	/* this tells the restore code to increment CvDEPTH */
347	PUSHs (Nullsv);
348	PUSHs ((SV *)cv);
349	}
350
351	PUSHs ((SV *)CvPADLIST(cv));	379	PUSHs ((SV *)CvPADLIST (cv));
		380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
352	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
353		382
		383	CvDEPTH (cv) = 0;
354	get_padlist (aTHX_ cv);	384	get_padlist (cv);
355	}	385	}
356	}	386	}
357	#ifdef CXt_FORMAT
358	else if (CxTYPE(cx) == CXt_FORMAT)
359	{
360	/* I never used formats, so how should I know how these are implemented? */
361	/* my bold guess is as a simple, plain sub... */
362	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
363	}
364	#endif
365	}	387	}
366		388
367	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
368	break;	390	break;
369		391
…		…
373	}	395	}
374		396
375	PUTBACK;	397	PUTBACK;
376	}	398	}
377		399
378	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;
379	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
380	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;
381		404
382	c->dowarn = PL_dowarn;	405	#define VAR(name,type)c->name = PL_ ## name;
383	c->in_eval = PL_in_eval;	406	# include "state.h"
384		407	#undef VAR
385	c->curstackinfo = PL_curstackinfo;
386	c->curstack = PL_curstack;
387	c->mainstack = PL_mainstack;
388	c->stack_sp = PL_stack_sp;
389	c->op = PL_op;
390	c->curpad = PL_curpad;
391	c->comppad = PL_comppad;
392	c->compcv = PL_compcv;
393	c->stack_base = PL_stack_base;
394	c->stack_max = PL_stack_max;
395	c->tmps_stack = PL_tmps_stack;
396	c->tmps_floor = PL_tmps_floor;
397	c->tmps_ix = PL_tmps_ix;
398	c->tmps_max = PL_tmps_max;
399	c->markstack = PL_markstack;
400	c->markstack_ptr = PL_markstack_ptr;
401	c->markstack_max = PL_markstack_max;
402	c->scopestack = PL_scopestack;
403	c->scopestack_ix = PL_scopestack_ix;
404	c->scopestack_max = PL_scopestack_max;
405	c->savestack = PL_savestack;
406	c->savestack_ix = PL_savestack_ix;
407	c->savestack_max = PL_savestack_max;
408	#if PERL_VERSION < 9
409	c->retstack = PL_retstack;
410	c->retstack_ix = PL_retstack_ix;
411	c->retstack_max = PL_retstack_max;
412	#endif
413	c->curpm = PL_curpm;
414	c->curcop = PL_curcop;
415	c->top_env = PL_top_env;
416	}	408	}
417		409
418	/*	410	/*
419	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
420	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
421	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
422	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
423	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
424	static void	419	static void
425	coro_init_stacks (pTHX)	420	coro_init_stacks ()
426	{	421	{
427	LOCK;
428
429	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
430	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
431	PL_curstack = PL_curstackinfo->si_stack;	424	PL_curstack = PL_curstackinfo->si_stack;
432	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
433		426
434	PL_stack_base = AvARRAY(PL_curstack);	427	PL_stack_base = AvARRAY(PL_curstack);
435	PL_stack_sp = PL_stack_base;	428	PL_stack_sp = PL_stack_base;
436	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
437		430
438	New(50,PL_tmps_stack,96,SV*);	431	New(50,PL_tmps_stack,128,SV*);
439	PL_tmps_floor = -1;	432	PL_tmps_floor = -1;
440	PL_tmps_ix = -1;	433	PL_tmps_ix = -1;
441	PL_tmps_max = 96;	434	PL_tmps_max = 128;
442		435
443	New(54,PL_markstack,16,I32);	436	New(54,PL_markstack,32,I32);
444	PL_markstack_ptr = PL_markstack;	437	PL_markstack_ptr = PL_markstack;
445	PL_markstack_max = PL_markstack + 16;	438	PL_markstack_max = PL_markstack + 32;
446		439
447	#ifdef SET_MARK_OFFSET	440	#ifdef SET_MARK_OFFSET
448	SET_MARK_OFFSET;	441	SET_MARK_OFFSET;
449	#endif	442	#endif
450		443
451	New(54,PL_scopestack,16,I32);	444	New(54,PL_scopestack,32,I32);
452	PL_scopestack_ix = 0;	445	PL_scopestack_ix = 0;
453	PL_scopestack_max = 16;	446	PL_scopestack_max = 32;
454		447
455	New(54,PL_savestack,96,ANY);	448	New(54,PL_savestack,64,ANY);
456	PL_savestack_ix = 0;	449	PL_savestack_ix = 0;
457	PL_savestack_max = 96;	450	PL_savestack_max = 64;
458		451
459	#if PERL_VERSION < 9	452	#if !PERL_VERSION_ATLEAST (5,9,0)
460	New(54,PL_retstack,8,OP*);	453	New(54,PL_retstack,16,OP*);
461	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
462	PL_retstack_max = 8;	455	PL_retstack_max = 16;
463	#endif	456	#endif
464
465	UNLOCK;
466	}	457	}
		458	#endif
467		459
468	/*	460	/*
469	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
470	*/	462	*/
471	static void	463	static void
472	destroy_stacks(pTHX)	464	coro_destroy_stacks ()
473	{	465	{
474	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
475	{	467	{
476	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
477	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
478		471
479	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
480	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
481		475
482	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
483	}	477	}
484		478
485	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
486	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
487		481
488	while (PL_curstackinfo)	482	while (PL_curstackinfo)
489	{	483	{
490	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
491		485
492	{ /D//remove/
493	dSP;
494	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
495	PUTBACK; /* possibly superfluous */
496	}
497
498	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
499	{
500	dounwind (-1);/D//remove/
501	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
502	}
503		488
504	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
505	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
506	PL_curstackinfo = p;	491	PL_curstackinfo = p;
507	}	492	}
508		493
509	Safefree (PL_tmps_stack);	494	Safefree (PL_tmps_stack);
510	Safefree (PL_markstack);	495	Safefree (PL_markstack);
511	Safefree (PL_scopestack);	496	Safefree (PL_scopestack);
512	Safefree (PL_savestack);	497	Safefree (PL_savestack);
513	#if PERL_VERSION < 9	498	#if !PERL_VERSION_ATLEAST (5,9,0)
514	Safefree (PL_retstack);	499	Safefree (PL_retstack);
515	#endif	500	#endif
516	}	501	}
517		502
518	static void	503	static void
519	allocate_stack (Coro__State ctx, int alloc)	504	setup_coro (struct coro *coro)
520	{
521	coro_stack *stack;
522
523	New (0, stack, 1, coro_stack);
524
525	stack->refcnt = 1;
526	stack->usecnt = 1;
527	stack->gencnt = ctx->gencnt = 0;
528
529	if (alloc)
530	{
531	#if HAVE_MMAP
532	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
533	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
534	if (stack->sptr == (void *)-1)
535	#endif
536	{
537	stack->ssize = - (STACKSIZE * (long)sizeof (long));
538	New (0, stack->sptr, STACKSIZE, long);
539	}
540	}
541	else
542	stack->sptr = 0;
543
544	ctx->stack = stack;
545	}
546
547	static void
548	deallocate_stack (Coro__State ctx)
549	{
550	coro_stack *stack = ctx->stack;
551
552	ctx->stack = 0;
553
554	if (stack)
555	{
556	if (!--stack->refcnt)
557	{
558	#ifdef HAVE_MMAP
559	if (stack->ssize > 0 && stack->sptr)
560	munmap (stack->sptr, stack->ssize);
561	else
562	#endif
563	Safefree (stack->sptr);
564
565	Safefree (stack);
566	}
567	else if (ctx->gencnt == stack->gencnt)
568	--stack->usecnt;
569	}
570	}
571
572	static void
573	setup_coro (void *arg)
574	{	505	{
575	/*	506	/*
576	* emulate part of the perl startup here.	507	* emulate part of the perl startup here.
577	*/	508	*/
578	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	{
579	dSP;	555	dSP;
580	Coro__State ctx = (Coro__State)arg;	556	LOGOP myop;
581	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
582		557
583	coro_init_stacks (aTHX);	558	Zero (&myop, 1, LOGOP);
584	/PL_curcop = 0;/	559	myop.op_next = PL_op;
585	/PL_in_eval = PL_in_eval;/ /* inherit */	560	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
586	SvREFCNT_dec (GvAV (PL_defgv));
587	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
588		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;
		567	PL_op = (OP *)&myop;
		568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	569	SPAGAIN;
590
591	if (ctx->stack)
592	{
593	ctx->cursp = 0;
594
595	PUSHMARK(SP);
596	PUTBACK;
597	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
598
599	if (SvTRUE (ERRSV))
600	croak (NULL);
601	else
602	croak ("FATAL: CCTXT coroutine returned!");
603	}
604	else
605	{
606	UNOP myop;
607
608	PL_op = (OP *)&myop;
609
610	Zero(&myop, 1, UNOP);
611	myop.op_next = Nullop;
612	myop.op_flags = OPf_WANT_VOID;
613
614	PUSHMARK(SP);
615	XPUSHs (sub_init);
616	/*
617	* the next line is slightly wrong, as PL_op->op_next
618	* is actually being executed so we skip the first op.
619	* that doesn't matter, though, since it is only
620	* pp_nextstate and we never return...
621	* ah yes, and I don't care anyways ;)
622	*/
623	PUTBACK;
624	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
625	SPAGAIN;
626
627	ENTER; /* necessary e.g. for dounwind */
628	}
629	}	570	}
630		571
631	static void	572	static void
632	continue_coro (void *arg)	573	coro_run (void *arg)
633	{	574	{
		575	/* coro_run is the alternative tail of transfer(), so unlock here. */
		576	UNLOCK;
		577
634	/*	578	/*
635	* this is a _very_ stripped down perl interpreter ;)	579	* this is a _very_ stripped down perl interpreter ;)
636	*/	580	*/
637	dTHX;
638	Coro__State ctx = (Coro__State)arg;
639
640	PL_top_env = &ctx->start_env;	581	PL_top_env = &PL_start_env;
641		582
642	ctx->cursp = 0;	583	/* inject call to cctx_init */
643	PL_op = PL_op->op_next;	584	prepare_cctx ((coro_cctx *)arg);
644	CALLRUNOPS(aTHX);
645		585
		586	/* somebody will hit me for both perl_run and PL_restartop */
		587	PL_restartop = PL_op;
		588	perl_run (PL_curinterp);
		589
		590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
646	abort ();	591	abort ();
647	}	592	}
648		593
		594	static coro_cctx *
		595	cctx_new ()
		596	{
		597	coro_cctx *cctx;
		598
		599	++cctx_count;
		600
		601	Newz (0, cctx, 1, coro_cctx);
		602
		603	#if HAVE_MMAP
		604
		605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
		606	/* mmap supposedly does allocate-on-write for us */
		607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		608
		609	if (cctx->sptr == (void *)-1)
		610	{
		611	perror ("FATAL: unable to mmap stack for coroutine");
		612	_exit (EXIT_FAILURE);
		613	}
		614
		615	# if STACKGUARD
		616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		617	# endif
		618
		619	#else
		620
		621	cctx->ssize = STACKSIZE * (long)sizeof (long);
		622	New (0, cctx->sptr, STACKSIZE, long);
		623
		624	if (!cctx->sptr)
		625	{
		626	perror ("FATAL: unable to malloc stack for coroutine");
		627	_exit (EXIT_FAILURE);
		628	}
		629
		630	#endif
		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
		639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		640
		641	return cctx;
		642	}
		643
649	static void	644	static void
		645	cctx_destroy (coro_cctx *cctx)
		646	{
		647	if (!cctx)
		648	return;
		649
		650	--cctx_count;
		651
		652	#if USE_VALGRIND
		653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
		654	#endif
		655
		656	#if HAVE_MMAP
		657	munmap (cctx->sptr, cctx->ssize);
		658	#else
		659	Safefree (cctx->sptr);
		660	#endif
		661
		662	Safefree (cctx);
		663	}
		664
		665	static coro_cctx *
		666	cctx_get ()
		667	{
		668	coro_cctx *cctx;
		669
		670	if (cctx_first)
		671	{
		672	cctx = cctx_first;
		673	cctx_first = cctx->next;
		674	--cctx_idle;
		675	}
		676	else
		677	{
		678	cctx = cctx_new ();
		679	PL_op = PL_op->op_next;
		680	}
		681
		682	return cctx;
		683	}
		684
		685	static void
		686	cctx_put (coro_cctx *cctx)
		687	{
		688	/* free another cctx if overlimit */
		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;
		702	}
		703
		704	/* never call directly, always through the coro_state_transfer global variable */
		705	static void NOINLINE
650	transfer (pTHX_ struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
651	{	707	{
652	dSTACKLEVEL;	708	dSTACKLEVEL;
653		709
		710	/* sometimes transfer is only called to set idle_sp */
		711	if (!next)
		712	{
		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	}
654	if (prev != next)	716	else if (prev != next)
655	{	717	{
656	if (next->mainstack)	718	coro_cctx *prev__cctx;
		719
		720	if (prev->flags & CF_NEW)
657	{	721	{
658	LOCK;	722	/* create a new empty context */
659	SAVE (prev, flags);	723	Newz (0, prev->cctx, 1, coro_cctx);
660	LOAD (next);	724	prev->cctx->inuse = 1;
661	UNLOCK;	725	prev->flags &= ~CF_NEW;
662		726	prev->flags \|= CF_RUNNING;
663	/* mark this state as in-use */
664	next->mainstack = 0;
665	next->tmps_ix = -2;
666
667	/* stacklevel changed? if yes, grab the stack for us! */
668	if (flags & TRANSFER_SAVE_CCTXT)
669	{
670	if (!prev->stack)
671	allocate_stack (prev, 0);
672	else if (prev->cursp != stacklevel
673	&& prev->stack->usecnt > 1)
674	{
675	prev->gencnt = ++prev->stack->gencnt;
676	prev->stack->usecnt = 1;
677	}
678
679	/* has our stack been invalidated? */
680	if (next->stack && next->stack->gencnt != next->gencnt)
681	{
682	deallocate_stack (next);
683	allocate_stack (next, 1);
684	coro_create (&(next->stack->cctx),
685	continue_coro, (void *)next,
686	next->stack->sptr, labs (next->stack->ssize));
687	}
688
689	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
690	prev->cursp = stacklevel;
691	/* don't add any code here */
692	}
693	else
694	next->cursp = stacklevel;
695	}	727	}
696	else if (next->tmps_ix == -2)	728
697	croak ("tried to transfer to running coroutine");	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;
		738
		739	LOCK;
		740
		741	if (next->flags & CF_NEW)
		742	{
		743	/* need to start coroutine */
		744	next->flags &= ~CF_NEW;
		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);
		751	}
698	else	752	else
699	{	753	{
700	LOCK;	754	/* coroutine already started */
701	SAVE (prev, -1); /* first get rid of the old state */	755	save_perl (prev);
702	UNLOCK;	756	load_perl (next);
703
704	if (flags & TRANSFER_SAVE_CCTXT)
705	{
706	if (!prev->stack)
707	allocate_stack (prev, 0);
708
709	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
710	{
711	PL_top_env = &next->start_env;
712
713	setup_coro (next);
714	next->cursp = stacklevel;
715
716	prev->stack->refcnt++;
717	prev->stack->usecnt++;
718	next->stack = prev->stack;
719	next->gencnt = prev->gencnt;
720	}
721	else
722	{
723	assert (!next->stack);
724	allocate_stack (next, 1);
725	coro_create (&(next->stack->cctx),
726	setup_coro, (void *)next,
727	next->stack->sptr, labs (next->stack->ssize));
728	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
729	prev->cursp = stacklevel;
730	/* don't add any code here */
731	}
732	}
733	else
734	{
735	setup_coro (next);
736	next->cursp = stacklevel;
737	}
738	}	757	}
739	}
740		758
741	LOCK;	759	prev__cctx = prev->cctx;
742	if (coro_mortal)	760
743	{	761	/* possibly "free" the cctx */
744	SvREFCNT_dec (coro_mortal);	762	if (prev__cctx->idle_sp == STACKLEVEL)
		763	{
		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
		767	prev->cctx = 0;
		768
		769	cctx_put (prev__cctx);
		770	prev__cctx->inuse = 0;
		771	}
		772
		773	if (!next->cctx)
		774	{
		775	next->cctx = cctx_get ();
		776	assert (!next->cctx->inuse);
		777	next->cctx->inuse = 1;
		778	}
		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
745	coro_mortal = 0;	787	free_coro_mortal ();
746	}	788
747	UNLOCK;	789	UNLOCK;
		790	}
748	}	791	}
749		792
750	#define SV_CORO(sv,func) \	793	struct transfer_args
751	do { \	794	{
752	if (SvROK (sv)) \	795	struct coro prev, next;
753	sv = SvRV (sv); \	796	};
754	\
755	if (SvTYPE (sv) == SVt_PVHV) \
756	{ \
757	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
758	\
759	if (!he) \
760	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
761	\
762	(sv) = SvRV (HeVAL(he)); \
763	} \
764	\
765	/* must also be changed inside Coro::Cont::yield */ \
766	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
767	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
768	\
769	} while(0)
770		797
771	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
772		799
		800	static void
		801	coro_state_destroy (struct coro *coro)
		802	{
		803	if (coro->refcnt--)
		804	return;
		805
		806	if (coro->mainstack && coro->mainstack != main_mainstack)
		807	{
		808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
		811
		812	if (coro->flags & CF_RUNNING)
		813	croak ("FATAL: tried to destroy currently running coroutine");
		814
		815	save_perl (&temp);
		816	load_perl (coro);
		817
		818	coro_destroy_stacks ();
		819
		820	load_perl (&temp); /* this will get rid of defsv etc.. */
		821
		822	coro->mainstack = 0;
		823	}
		824
		825	cctx_destroy (coro->cctx);
		826	SvREFCNT_dec (coro->args);
		827	Safefree (coro);
		828	}
		829
773	static void	830	static int
		831	coro_state_clear (pTHX_ SV sv, MAGIC mg)
		832	{
		833	struct coro coro = (struct coro )mg->mg_ptr;
		834	mg->mg_ptr = 0;
		835
		836	coro_state_destroy (coro);
		837
		838	return 0;
		839	}
		840
		841	static int
		842	coro_state_dup (pTHX_ MAGIC mg, CLONE_PARAMS params)
		843	{
		844	struct coro coro = (struct coro )mg->mg_ptr;
		845
		846	++coro->refcnt;
		847
		848	return 0;
		849	}
		850
		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	};
		861
		862	static struct coro *
		863	SvSTATE (SV *coro)
		864	{
		865	HV *stash;
		866	MAGIC *mg;
		867
		868	if (SvROK (coro))
		869	coro = SvRV (coro);
		870
		871	stash = SvSTASH (coro);
		872	if (stash != coro_stash && stash != coro_state_stash)
		873	{
		874	/* very slow, but rare, check */
		875	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		876	croak ("Coro::State object required");
		877	}
		878
		879	mg = SvMAGIC (coro);
		880	assert (mg->mg_type == PERL_MAGIC_ext);
		881	return (struct coro *)mg->mg_ptr;
		882	}
		883
		884	static void
		885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
		886	{
		887	ta->prev = SvSTATE (prev_sv);
		888	ta->next = SvSTATE (next_sv);
		889	}
		890
		891	static void
774	api_transfer(pTHX_ SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
775	{	893	{
776	SV_CORO (prev, "Coro::transfer");	894	struct transfer_args ta;
777	SV_CORO (next, "Coro::transfer");
778		895
779	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
		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;
780	}	910	}
781		911
782	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
783		913
784	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
787	#define PRIO_LOW -1	917	#define PRIO_LOW -1
788	#define PRIO_IDLE -3	918	#define PRIO_IDLE -3
789	#define PRIO_MIN -4	919	#define PRIO_MIN -4
790		920
791	/* for Coro.pm */	921	/* for Coro.pm */
792	static GV coro_current, coro_idle;	922	static SV *coro_current;
793	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
794	static int coro_nready;	924	static int coro_nready;
795		925
796	static void	926	static void
797	coro_enq (pTHX_ SV *sv)	927	coro_enq (SV *coro_sv)
798	{	928	{
799	SV **xprio;
800	int prio;
801
802	if (SvTYPE (sv) != SVt_PVHV)
803	croak ("Coro::ready tried to enqueue something that is not a coroutine");
804
805	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
806	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
807
808	prio = prio > PRIO_MAX ? PRIO_MAX
809	: prio < PRIO_MIN ? PRIO_MIN
810	: prio;
811
812	av_push (coro_ready [prio - PRIO_MIN], sv);	929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
813	coro_nready++;	930	coro_nready++;
814	}	931	}
815		932
816	static SV *	933	static SV *
817	coro_deq (pTHX_ int min_prio)	934	coro_deq (int min_prio)
818	{	935	{
819	int prio = PRIO_MAX - PRIO_MIN;	936	int prio = PRIO_MAX - PRIO_MIN;
820		937
821	min_prio -= PRIO_MIN;	938	min_prio -= PRIO_MIN;
822	if (min_prio < 0)	939	if (min_prio < 0)
823	min_prio = 0;	940	min_prio = 0;
824		941
825	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
826	if (av_len (coro_ready[prio]) >= 0)	943	if (AvFILLp (coro_ready [prio]) >= 0)
827	{	944	{
828	coro_nready--;	945	coro_nready--;
829	return av_shift (coro_ready[prio]);	946	return av_shift (coro_ready [prio]);
830	}	947	}
831		948
832	return 0;	949	return 0;
833	}	950	}
834		951
835	static void	952	static int
836	api_ready (SV *coro)	953	api_ready (SV *coro_sv)
837	{	954	{
838	dTHX;	955	struct coro *coro;
839		956
840	if (SvROK (coro))	957	if (SvROK (coro_sv))
841	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;
842		966
843	LOCK;	967	LOCK;
844	coro_enq (aTHX_ SvREFCNT_inc (coro));	968	coro_enq (SvREFCNT_inc (coro_sv));
845	UNLOCK;	969	UNLOCK;
		970
		971	return 1;
		972	}
		973
		974	static int
		975	api_is_ready (SV *coro_sv)
		976	{
		977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
		978	}
		979
		980	static void
		981	prepare_schedule (struct transfer_args *ta)
		982	{
		983	SV prev, next;
		984
		985	for (;;)
		986	{
		987	LOCK;
		988	next = coro_deq (PRIO_MIN);
		989	UNLOCK;
		990
		991	if (next)
		992	break;
		993
		994	{
		995	dSP;
		996
		997	ENTER;
		998	SAVETMPS;
		999
		1000	PUSHMARK (SP);
		1001	PUTBACK;
		1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1003
		1004	FREETMPS;
		1005	LEAVE;
		1006	}
		1007	}
		1008
		1009	prev = SvRV (coro_current);
		1010	SvRV_set (coro_current, next);
		1011
		1012	/* free this only after the transfer */
		1013	LOCK;
		1014	free_coro_mortal ();
		1015	UNLOCK;
		1016	coro_mortal = prev;
		1017
		1018	assert (!SvROK(prev));//D
		1019	assert (!SvROK(next));//D
		1020
		1021	ta->prev = SvSTATE (prev);
		1022	ta->next = SvSTATE (next);
		1023
		1024	assert (ta->next->flags & CF_READY);
		1025	ta->next->flags &= ~CF_READY;
		1026	}
		1027
		1028	static void
		1029	prepare_cede (struct transfer_args *ta)
		1030	{
		1031	api_ready (coro_current);
		1032	prepare_schedule (ta);
		1033	}
		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;
846	}	1047	}
847		1048
848	static void	1049	static void
849	api_schedule (void)	1050	api_schedule (void)
850	{	1051	{
851	dTHX;	1052	struct transfer_args ta;
852		1053
853	SV prev, next;	1054	prepare_schedule (&ta);
854		1055	TRANSFER (ta);
855	LOCK;
856
857	prev = SvRV (GvSV (coro_current));
858	next = coro_deq (aTHX_ PRIO_MIN);
859
860	if (!next)
861	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
862
863	/* free this only after the transfer */
864	coro_mortal = prev;
865	SV_CORO (prev, "Coro::schedule");
866
867	SvRV (GvSV (coro_current)) = next;
868
869	SV_CORO (next, "Coro::schedule");
870
871	UNLOCK;
872
873	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
874	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
875	}	1056	}
876		1057
877	static void	1058	static int
878	api_cede (void)	1059	api_cede (void)
879	{	1060	{
880	dTHX;	1061	struct transfer_args ta;
881		1062
882	LOCK;	1063	prepare_cede (&ta);
883	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
884	UNLOCK;
885		1064
886	api_schedule ();	1065	if (ta.prev != ta.next)
		1066	{
		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;
887	}	1086	}
888		1087
889	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
890		1089
891	PROTOTYPES: ENABLE	1090	PROTOTYPES: DISABLE
892		1091
893	BOOT:	1092	BOOT:
894	{ /* {} necessary for stoopid perl-5.6.x */	1093	{
895	#ifdef USE_ITHREADS	1094	#ifdef USE_ITHREADS
896	MUTEX_INIT (&coro_mutex);	1095	MUTEX_INIT (&coro_mutex);
897	#endif	1096	#endif
		1097	BOOT_PAGESIZE;
898		1098
899	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
900	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
901	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
902		1100
903	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
904	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
905	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));
906	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));	1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
907		1106
908	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
909		1108
910	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
911	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
912	}
913		1111
914	Coro::State	1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
915	_newprocess(args)	1113	}
916	SV * args	1114
917	PROTOTYPE: $	1115	SV *
		1116	new (char *klass, ...)
918	CODE:	1117	CODE:
919	Coro__State coro;	1118	{
		1119	struct coro *coro;
		1120	HV *hv;
		1121	int i;
920		1122
921	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
922	croak ("Coro::State::_newprocess expects an arrayref");
923
924	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
		1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
		1126	coro->flags = CF_NEW;
925		1127
926	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	1128	hv = newHV ();
927	/coro->mainstack = 0; //actual work is done inside transfer /	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
928	/coro->stack = 0;/	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
929		1131
930	/* same as JMPENV_BOOTSTRAP */	1132	for (i = 1; i < items; i++)
931	/* we might be able to recycle start_env, but safe is safe */	1133	av_push (coro->args, newSVsv (ST (i)));
932	/Zero(&coro->start_env, 1, JMPENV);/	1134	}
933	coro->start_env.je_ret = -1;
934	coro->start_env.je_mustcatch = TRUE;
935
936	RETVAL = coro;
937	OUTPUT:	1135	OUTPUT:
938	RETVAL	1136	RETVAL
939		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
940	void	1145	void
941	transfer(prev, next, flags)	1146	_set_stacklevel (...)
942	SV *prev	1147	ALIAS:
943	SV *next	1148	Coro::State::transfer = 1
944	int flags	1149	Coro::schedule = 2
945	PROTOTYPE: @	1150	Coro::cede = 3
		1151	Coro::cede_notself = 4
946	CODE:	1152	CODE:
947	PUTBACK;	1153	{
948	SV_CORO (next, "Coro::transfer");	1154	struct transfer_args ta;
949	SV_CORO (prev, "Coro::transfer");	1155
950	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	1156	switch (ix)
951	SPAGAIN;	1157	{
		1158	case 0:
		1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
		1160	ta.next = 0;
		1161	break;
		1162
		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:
		1171	prepare_schedule (&ta);
		1172	break;
		1173
		1174	case 3:
		1175	prepare_cede (&ta);
		1176	break;
		1177
		1178	case 4:
		1179	if (!prepare_cede_notself (&ta))
		1180	XSRETURN_EMPTY;
		1181
		1182	break;
		1183	}
		1184
		1185	BARRIER;
		1186	TRANSFER (ta);
		1187	}
952		1188
953	void	1189	void
954	DESTROY(coro)	1190	_clone_state_from (SV dst, SV src)
955	Coro::State coro	1191	CODE:
956	CODE:	1192	{
		1193	struct coro *coro_src = SvSTATE (src);
957		1194
958	if (coro->mainstack && coro->mainstack != main_mainstack)	1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
959	{
960	struct coro temp;
961		1196
962	PUTBACK;	1197	++coro_src->refcnt;
963	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);	1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
964	LOAD (aTHX_ coro);	1199	}
965	SPAGAIN;
966
967	destroy_stacks (aTHX);
968
969	LOAD ((&temp)); /* this will get rid of defsv etc.. */
970	SPAGAIN;
971
972	coro->mainstack = 0;
973	}
974
975	deallocate_stack (coro);
976	SvREFCNT_dec (coro->args);
977	Safefree (coro);
978		1200
979	void	1201	void
980	_exit(code)	1202	_exit (code)
981	int code	1203	int code
982	PROTOTYPE: $	1204	PROTOTYPE: $
983	CODE:	1205	CODE:
984	_exit (code);	1206	_exit (code);
985		1207
986	MODULE = Coro::State PACKAGE = Coro::Cont	1208	int
		1209	cctx_count ()
		1210	CODE:
		1211	RETVAL = cctx_count;
		1212	OUTPUT:
		1213	RETVAL
987		1214
988	# this is slightly dirty (should expose a c-level api)	1215	int
989		1216	cctx_idle ()
990	void	1217	CODE:
991	yield(...)	1218	RETVAL = cctx_idle;
992	PROTOTYPE: @	1219	OUTPUT:
993	CODE:	1220	RETVAL
994	SV *yieldstack;
995	SV *sv;
996	AV *defav = GvAV (PL_defgv);
997	struct coro prev, next;
998
999	yieldstack = *hv_fetch (
1000	(HV *)SvRV (GvSV (coro_current)),
1001	"yieldstack", sizeof ("yieldstack") - 1,
1002	0
1003	);
1004
1005	/* set up @_ -- ugly */
1006	av_clear (defav);
1007	av_fill (defav, items - 1);
1008	while (items--)
1009	av_store (defav, items, SvREFCNT_inc (ST(items)));
1010
1011	sv = av_pop ((AV *)SvRV (yieldstack));
1012	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));
1013	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));
1014	SvREFCNT_dec (sv);
1015
1016	transfer (aTHX_ prev, next, 0);
1017		1221
1018	MODULE = Coro::State PACKAGE = Coro	1222	MODULE = Coro::State PACKAGE = Coro
1019		1223
1020	# this is slightly dirty (should expose a c-level api)
1021
1022	BOOT:	1224	BOOT:
1023	{	1225	{
1024	int i;	1226	int i;
		1227
1025	HV *stash = gv_stashpv ("Coro", TRUE);	1228	coro_stash = gv_stashpv ("Coro", TRUE);
1026		1229
1027	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1230	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1028	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1231	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1029	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1030	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1031	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1032	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1033		1236
1034	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1237	coro_current = get_sv ("Coro::current", FALSE);
1035	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1238	SvREADONLY_on (coro_current);
1036		1239
1037	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1038	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1039		1242
1040	{	1243	{
1041	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1042		1245
1043	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1044	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1045	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
		1251	coroapi.is_ready = api_is_ready;
1046	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1047	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1048		1254
1049	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1050	sv_setiv(sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1051	SvREADONLY_on(sv);	1257	SvREADONLY_on (sv);
1052	}	1258	}
1053	}	1259	}
1054		1260
1055	#if !PERL_MICRO
1056
1057	void	1261	void
1058	ready(self)	1262	_set_current (SV *current)
1059	SV * self
1060	PROTOTYPE: $	1263	PROTOTYPE: $
1061	CODE:	1264	CODE:
1062	api_ready (self);	1265	SvREFCNT_dec (SvRV (coro_current));
1063		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1064	#endif
1065		1267
1066	int	1268	int
		1269	prio (Coro::State coro, int newprio = 0)
		1270	ALIAS:
		1271	nice = 1
		1272	CODE:
		1273	{
		1274	RETVAL = coro->prio;
		1275
		1276	if (items > 1)
		1277	{
		1278	if (ix)
		1279	newprio = coro->prio - newprio;
		1280
		1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1283
		1284	coro->prio = newprio;
		1285	}
		1286	}
		1287	OUTPUT:
		1288	RETVAL
		1289
		1290	SV *
		1291	ready (SV *self)
		1292	PROTOTYPE: $
		1293	CODE:
		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
		1305
		1306	int
1067	nready(...)	1307	nready (...)
1068	PROTOTYPE:	1308	PROTOTYPE:
1069	CODE:	1309	CODE:
1070	RETVAL = coro_nready;	1310	RETVAL = coro_nready;
1071	OUTPUT:	1311	OUTPUT:
1072	RETVAL	1312	RETVAL
1073		1313
1074	void	1314	MODULE = Coro::State PACKAGE = Coro::AIO
1075	schedule(...)	1315
1076	PROTOTYPE:	1316	SV *
		1317	_get_state ()
1077	CODE:	1318	CODE:
1078	api_schedule ();
1079
1080	void
1081	cede(...)
1082	PROTOTYPE:
1083	CODE:
1084	api_cede ();
1085
1086	# and these are hacks
1087	SV *
1088	_aio_get_state ()
1089	CODE:
1090	{	1319	{
1091	struct {	1320	struct io_state *data;
1092	int errorno;
1093	int laststype;
1094	int laststatval;
1095	Stat_t statcache;
1096	} data;
1097		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
1098	data.errorno = errno;	1327	data->errorno = errno;
1099	data.laststype = PL_laststype;	1328	data->laststype = PL_laststype;
1100	data.laststatval = PL_laststatval;	1329	data->laststatval = PL_laststatval;
1101	data.statcache = PL_statcache;	1330	data->statcache = PL_statcache;
1102
1103	RETVAL = newSVpvn ((char *)&data, sizeof data);
1104	}	1331	}
1105	OUTPUT:	1332	OUTPUT:
1106	RETVAL	1333	RETVAL
1107		1334
1108	void	1335	void
1109	_aio_set_state (char *data_)	1336	_set_state (char *data_)
1110	PROTOTYPE: $	1337	PROTOTYPE: $
1111	CODE:	1338	CODE:
1112	{	1339	{
1113	struct {	1340	struct io_state data = (void )data_;
1114	int errorno;
1115	int laststype;
1116	int laststatval;
1117	Stat_t statcache;
1118	} data = (void )data_;
1119		1341
1120	errno = data->errorno;	1342	errno = data->errorno;
1121	PL_laststype = data->laststype;	1343	PL_laststype = data->laststype;
1122	PL_laststatval = data->laststatval;	1344	PL_laststatval = data->laststatval;
1123	PL_statcache = data->statcache;	1345	PL_statcache = data->statcache;
1124	}	1346	}
		1347

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Comparing Coro/Coro/State.xs (file contents): Revision 1.77 by root, Tue Oct 31 23:55:33 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.77 by root, Tue Oct 31 23:55:33 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC