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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.48 by root, Sun Oct 22 10:33:19 2006 UTC vs.
Revision 1.158 by root, Sat Jan 2 14:11:32 2010 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	/* perl namespace pollution */
25	# if __linux	21	#undef VERSION
26	# include <sys/sendfile.h>	22
27	# elif __freebsd	23	#ifdef _WIN32
28	# include <sys/socket.h>	24
29	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	26	# undef malloc
31	# include <sys/socket.h>	27	# undef free
32	# elif __solaris /* not yet */	28
33	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
34	# else	61	#else
35	# error sendfile support requested but not available	62
36	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
37	#endif	70	#endif
38		71
39	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
41	# define NAME_MAX 4096	74	#undef readdir
		75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
42	#endif	89	#endif
43		90
44	#if __ia64	91	/*****************************************************************************/
45	# define STACKSIZE 65536	92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	95	#else
47	# define STACKSIZE 8192	96	# define expect(expr,value) (expr)
48	#endif	97	#endif
49		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
		149
50	enum {	150	enum {
51	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_SLEEP,
61	REQ_GROUP,
62	};	152	};
63		153
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		155
67	typedef struct aio_cb
68	{
69	struct aio_cb *grp, *grp_prev, *grp_next;
70
71	struct aio_cb *volatile next;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
93		158
94	static int started, wanted;	159	static SV *on_next_submit;
95	static volatile int nreqs;	160	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	161	static int max_outstanding;
97	static int respipe [2];
98		162
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	163	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		164
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	165	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	166	static void req_cancel (aio_req req);
		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	s_epipe_signal (&respipe);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	s_epipe_drain (&respipe);
		178	}
107		179
108	/* must be called at most once */	180	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
110	{	182	{
		183	if (!req->self)
		184	{
111	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
112	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		187	}
113		188
114	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
115	}	190	}
116		191
117	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
118	{	193	{
119	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	194	MAGIC *mg;
		195
		196	if (!SvROK (sv)
		197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		198	&& SvSTASH (SvRV (sv)) != aio_req_stash
		199	&& !sv_derived_from (sv, "IO::AIO::REQ")))
120	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
121		201
122	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
123		203
124	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
125	}	205	}
126		206
127	static void poll_wait ()	207	static void aio_grp_feed (aio_req grp)
128	{	208	{
129	if (nreqs && !ress)	209	if (grp->sv2 && SvOK (grp->sv2))
130	{	210	{
131	fd_set rfd;	211	dSP;
132	FD_ZERO(&rfd);
133	FD_SET(respipe [0], &rfd);
134		212
135	select (respipe [0] + 1, &rfd, 0, 0, 0);	213	ENTER;
		214	SAVETMPS;
		215	PUSHMARK (SP);
		216	XPUSHs (req_sv (grp, aio_grp_stash));
		217	PUTBACK;
		218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		219	SPAGAIN;
		220	FREETMPS;
		221	LEAVE;
136	}	222	}
137	}	223	}
138		224
		225	static void req_submit (eio_req *req)
		226	{
		227	eio_submit (req);
		228
		229	if (expect_false (on_next_submit))
		230	{
		231	dSP;
		232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
		239	}
		240	}
		241
139	static void req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
140	{	243	{
141	dSP;	244	dSP;
142	int errorno = errno;
143		245
144	if (req->cancelled || !SvOK (req->callback))	246	if (req->flags & FLAG_SV2_RO_OFF)
145	return;	247	SvREADONLY_off (req->sv2);
146		248
147	errno = req->errorno;	249	if (!EIO_CANCELLED (req) && req->callback)
148
149	ENTER;
150	PUSHMARK (SP);
151	EXTEND (SP, 1);
152
153	switch (req->type)
154	{	250	{
155	case REQ_READDIR:	251	ENTER;
		252	SAVETMPS;
		253	PUSHMARK (SP);
		254	EXTEND (SP, 1);
		255
		256	switch (req->type)
156	{	257	{
157	SV *rv = &PL_sv_undef;	258	case EIO_READDIR:
158
159	if (req->result >= 0)
160	{	259	{
161	char *buf = req->data2ptr;	260	SV *rv = &PL_sv_undef;
162	AV *av = newAV ();
163		261
164	while (req->result)	262	if (req->result >= 0)
165	{	263	{
		264	int i;
		265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
166	SV *sv = newSVpv (buf, 0);	267	AV *av = newAV ();
167		268
168	av_push (av, sv);	269	av_extend (av, req->result - 1);
		270
		271	for (i = 0; i < req->result; ++i)
		272	{
		273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
		297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
169	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
170	req->result--;	306	}
		307	}
		308
		309	rv = sv_2mortal (newRV_noinc ((SV *)av));
171	}	310	}
172		311
173	rv = sv_2mortal (newRV_noinc ((SV *)av));	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
174	}	316	}
		317	break;
175		318
		319	case EIO_OPEN:
		320	{
		321	/* convert fd to fh */
		322	SV *fh = &PL_sv_undef;
		323
		324	if (req->result >= 0)
		325	{
		326	GV *gv = (GV *)sv_newmortal ();
		327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, aio_stash, sym, symlen, 0);
		333
		334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
176	PUSHs (rv);	346	PUSHs (fh);
		347	}
		348	break;
		349
		350	case EIO_GROUP:
		351	req->int1 = 2; /* mark group as finished */
		352
		353	if (req->sv1)
		354	{
		355	int i;
		356	AV *av = (AV *)req->sv1;
		357
		358	EXTEND (SP, AvFILL (av) + 1);
		359	for (i = 0; i <= AvFILL (av); ++i)
		360	PUSHs (*av_fetch (av, i, 0));
		361	}
		362	break;
		363
		364	case EIO_NOP:
		365	case EIO_BUSY:
		366	break;
		367
		368	case EIO_READLINK:
		369	if (req->result > 0)
		370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		371	break;
		372
		373	case EIO_STAT:
		374	case EIO_LSTAT:
		375	case EIO_FSTAT:
		376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		377	PL_laststatval = req->result;
		378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		379	PUSHs (sv_2mortal (newSViv (req->result)));
		380	break;
		381
		382	case EIO_READ:
		383	{
		384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
		390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
		396
		397	default:
		398	PUSHs (sv_2mortal (newSViv (req->result)));
		399	break;
177	}	400	}
178	break;
179		401
180	case REQ_OPEN:	402	errno = req->errorno;
181	{
182	/* convert fd to fh */
183	SV *fh;
184		403
185	PUSHs (sv_2mortal (newSViv (req->result)));
186	PUTBACK;	404	PUTBACK;
187	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
188	SPAGAIN;	406	SPAGAIN;
189		407
190	fh = SvREFCNT_inc (POPs);	408	FREETMPS;
		409	LEAVE;
191		410
192	PUSHMARK (SP);	411	PUTBACK;
193	XPUSHs (sv_2mortal (fh));
194	}
195	break;
196
197	case REQ_GROUP:
198	if (req->data)
199	{
200	int i;
201	AV *av = (AV *)req->data;
202
203	EXTEND (SP, AvFILL (av) + 1);
204	for (i = 0; i <= AvFILL (av); ++i)
205	PUSHs (*av_fetch (av, i, 0));
206	}
207	break;
208
209	case REQ_SLEEP:
210	break;
211
212	default:
213	PUSHs (sv_2mortal (newSViv (req->result)));
214	break;
215	}	412	}
216		413
217		414	return !!SvTRUE (ERRSV);
218	PUTBACK;
219	call_sv (req->callback, G_VOID | G_EVAL);
220	SPAGAIN;
221
222	if (SvTRUE (ERRSV))
223	{
224	req_free (req);
225	croak (0);
226	}
227
228	LEAVE;
229
230	errno = errorno;
231	}	415	}
232		416
233	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
234	{	418	{
235	if (req->grp)
236	{
237	aio_req grp = req->grp;
238
239	/* unlink request */
240	req->grp_next->grp_prev = req->grp_prev;
241	req->grp_prev->grp_next = req->grp_next;
242
243	if (grp->grp_next == grp && grp->fd)
244	{
245	req_invoke (grp);
246	req_free (grp);
247	}
248	}
249
250	if (req->self)	419	if (req->self)
251	{	420	{
252	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
253	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
254	}	423	}
255		424
256	if (req->data)
257	SvREFCNT_dec (req->data);
258
259	if (req->fh)
260	SvREFCNT_dec (req->fh);	425	SvREFCNT_dec (req->sv1);
261
262	if (req->fh2)
263	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
264
265	if (req->statdata)
266	Safefree (req->statdata);
267
268	if (req->callback)
269	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
270
271	if (req->type == REQ_READDIR && req->result >= 0)
272	free (req->data2ptr);
273		428
274	Safefree (req);	429	Safefree (req);
275	}	430	}
276		431
277	static void req_cancel (aio_req req)	432	static void req_cancel_subs (aio_req grp)
278	{	433	{
279	req->cancelled = 1;	434	aio_req sub;
280		435
281	if (req->type == REQ_GROUP)	436	if (grp->type != EIO_GROUP)
		437	return;
		438
		439	SvREFCNT_dec (grp->sv2);
		440	grp->sv2 = 0;
		441
		442	eio_grp_cancel (grp);
		443	}
		444
		445	static void
		446	create_respipe (void)
		447	{
		448	if (s_epipe_renew (&respipe))
		449	croak ("IO::AIO: unable to initialize result pipe");
		450	}
		451
		452	static void poll_wait (void)
		453	{
		454	while (eio_nreqs ())
282	{	455	{
283	aio_req sub;	456	int size;
284		457
285	for (sub = req->grp_next; sub != req; sub = sub->grp_next)	458	X_LOCK (reslock);
286	req_cancel (sub);	459	size = res_queue.size;
		460	X_UNLOCK (reslock);
		461
		462	if (size)
		463	return;
		464
		465	etp_maybe_start_thread ();
		466
		467	s_epipe_wait (&respipe);
287	}	468	}
288	}	469	}
289		470
290	static int poll_cb ()	471	static int poll_cb (void)
291	{	472	{
292	dSP;
293	int count = 0;
294	int do_croak = 0;
295	aio_req req;
296
297	for (;;)	473	for (;;)
298	{	474	{
299	pthread_mutex_lock (&reslock);	475	int res = eio_poll ();
300	req = ress;
301		476
302	if (req)	477	if (res > 0)
303	{
304	ress = req->next;
305
306	if (!ress)
307	{
308	/* read any signals sent by the worker threads */
309	char buf [32];
310	while (read (respipe [0], buf, 32) == 32)
311	;
312
313	rese = 0;
314	}
315	}
316
317	pthread_mutex_unlock (&reslock);
318
319	if (!req)
320	break;	478	croak (0);
321		479
322	nreqs--;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
		481	return res;
323		482
324	if (req->type == REQ_QUIT)	483	poll_wait ();
325	started--;
326	else if (req->type == REQ_GROUP && req->grp_next != req)
327	{
328	req->fd = 1; /* mark request as delayed */
329	continue;
330	}
331	else
332	{
333	if (req->type == REQ_READ)
334	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
335
336	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
337	SvREADONLY_off (req->data);
338
339	if (req->statdata)
340	{
341	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
342	PL_laststatval = req->result;
343	PL_statcache = *(req->statdata);
344	}
345
346	req_invoke (req);
347
348	count++;
349	}
350
351	req_free (req);
352	}	484	}
353
354	return count;
355	}
356
357	static void *aio_proc(void *arg);
358
359	static void start_thread (void)
360	{
361	sigset_t fullsigset, oldsigset;
362	pthread_t tid;
363	pthread_attr_t attr;
364
365	pthread_attr_init (&attr);
366	pthread_attr_setstacksize (&attr, STACKSIZE);
367	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
368
369	sigfillset (&fullsigset);
370	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
373	started++;
374
375	sigprocmask (SIG_SETMASK, &oldsigset, 0);
376	}
377
378	static void req_send (aio_req req)
379	{
380	while (started < wanted && nreqs >= started)
381	start_thread ();
382
383	nreqs++;
384
385	pthread_mutex_lock (&reqlock);
386
387	req->next = 0;
388
389	if (reqe)
390	{
391	reqe->next = req;
392	reqe = req;
393	}
394	else
395	reqe = reqs = req;
396
397	pthread_cond_signal (&reqwait);
398	pthread_mutex_unlock (&reqlock);
399
400	if (nreqs > max_outstanding)
401	for (;;)
402	{
403	poll_cb ();
404
405	if (nreqs <= max_outstanding)
406	break;
407
408	poll_wait ();
409	}
410	}
411
412	static void end_thread (void)
413	{
414	aio_req req;
415	Newz (0, req, 1, aio_cb);
416	req->type = REQ_QUIT;
417
418	req_send (req);
419	}
420
421	static void min_parallel (int nthreads)
422	{
423	if (wanted < nthreads)
424	wanted = nthreads;
425	}
426
427	static void max_parallel (int nthreads)
428	{
429	int cur = started;
430
431	if (wanted > nthreads)
432	wanted = nthreads;
433
434	while (cur > wanted)
435	{
436	end_thread ();
437	cur--;
438	}
439
440	while (started > wanted)
441	{
442	poll_wait ();
443	poll_cb ();
444	}
445	}
446
447	static void create_pipe ()
448	{
449	if (pipe (respipe))
450	croak ("unable to initialize result pipe");
451
452	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
453	croak ("cannot set result pipe to nonblocking mode");
454
455	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
456	croak ("cannot set result pipe to nonblocking mode");
457	}
458
459	/*****************************************************************************/
460	/* work around various missing functions */
461
462	#if !HAVE_PREADWRITE
463	# define pread aio_pread
464	# define pwrite aio_pwrite
465
466	/*
467	* make our pread/pwrite safe against themselves, but not against
468	* normal read/write by using a mutex. slows down execution a lot,
469	* but that's your problem, not mine.
470	*/
471	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
472
473	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
474	{
475	ssize_t res;
476	off_t ooffset;
477
478	pthread_mutex_lock (&preadwritelock);
479	ooffset = lseek (fd, 0, SEEK_CUR);
480	lseek (fd, offset, SEEK_SET);
481	res = read (fd, buf, count);
482	lseek (fd, ooffset, SEEK_SET);
483	pthread_mutex_unlock (&preadwritelock);
484
485	return res;
486	}
487
488	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
489	{
490	ssize_t res;
491	off_t ooffset;
492
493	pthread_mutex_lock (&preadwritelock);
494	ooffset = lseek (fd, 0, SEEK_CUR);
495	lseek (fd, offset, SEEK_SET);
496	res = write (fd, buf, count);
497	lseek (fd, offset, SEEK_SET);
498	pthread_mutex_unlock (&preadwritelock);
499
500	return res;
501	}
502	#endif
503
504	#if !HAVE_FDATASYNC
505	# define fdatasync fsync
506	#endif
507
508	#if !HAVE_READAHEAD
509	# define readahead aio_readahead
510
511	static ssize_t readahead (int fd, off_t offset, size_t count)
512	{
513	char readahead_buf[4096];
514
515	while (count > 0)
516	{
517	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
518
519	pread (fd, readahead_buf, len, offset);
520	offset += len;
521	count -= len;
522	}
523
524	errno = 0;
525	}
526	#endif
527
528	#if !HAVE_READDIR_R
529	# define readdir_r aio_readdir_r
530
531	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
532
533	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
534	{
535	struct dirent *e;
536	int errorno;
537
538	pthread_mutex_lock (&readdirlock);
539
540	e = readdir (dirp);
541	errorno = errno;
542
543	if (e)
544	{
545	*res = ent;
546	strcpy (ent->d_name, e->d_name);
547	}
548	else
549	*res = 0;
550
551	pthread_mutex_unlock (&readdirlock);
552
553	errno = errorno;
554	return e ? 0 : -1;
555	}
556	#endif
557
558	/* sendfile always needs emulation */
559	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
560	{
561	ssize_t res;
562
563	if (!count)
564	return 0;
565
566	#if HAVE_SENDFILE
567	# if __linux
568	res = sendfile (ofd, ifd, &offset, count);
569
570	# elif __freebsd
571	/*
572	* Of course, the freebsd sendfile is a dire hack with no thoughts
573	* wasted on making it similar to other I/O functions.
574	*/
575	{
576	off_t sbytes;
577	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
578
579	if (res < 0 && sbytes)
580	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
581	res = sbytes;
582	}
583
584	# elif __hpux
585	res = sendfile (ofd, ifd, offset, count, 0, 0);
586
587	# elif __solaris
588	{
589	struct sendfilevec vec;
590	size_t sbytes;
591
592	vec.sfv_fd = ifd;
593	vec.sfv_flag = 0;
594	vec.sfv_off = offset;
595	vec.sfv_len = count;
596
597	res = sendfilev (ofd, &vec, 1, &sbytes);
598
599	if (res < 0 && sbytes)
600	res = sbytes;
601	}
602
603	# endif
604	#else
605	res = -1;
606	errno = ENOSYS;
607	#endif
608
609	if (res < 0
610	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
611	#if __solaris
612	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
613	#endif
614	)
615	)
616	{
617	/* emulate sendfile. this is a major pain in the ass */
618	char buf[4096];
619	res = 0;
620
621	while (count)
622	{
623	ssize_t cnt;
624
625	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
626
627	if (cnt <= 0)
628	{
629	if (cnt && !res) res = -1;
630	break;
631	}
632
633	cnt = write (ofd, buf, cnt);
634
635	if (cnt <= 0)
636	{
637	if (cnt && !res) res = -1;
638	break;
639	}
640
641	offset += cnt;
642	res += cnt;
643	count -= cnt;
644	}
645	}
646
647	return res;
648	}
649
650	/* read a full directory */
651	static int scandir_ (const char *path, void **namesp)
652	{
653	DIR *dirp = opendir (path);
654	union
655	{
656	struct dirent d;
657	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
658	} u;
659	struct dirent *entp;
660	char *name, *names;
661	int memlen = 4096;
662	int memofs = 0;
663	int res = 0;
664	int errorno;
665
666	if (!dirp)
667	return -1;
668
669	names = malloc (memlen);
670
671	for (;;)
672	{
673	errno = 0, readdir_r (dirp, &u.d, &entp);
674
675	if (!entp)
676	break;
677
678	name = entp->d_name;
679
680	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
681	{
682	int len = strlen (name) + 1;
683
684	res++;
685
686	while (memofs + len > memlen)
687	{
688	memlen *= 2;
689	names = realloc (names, memlen);
690	if (!names)
691	break;
692	}
693
694	memcpy (names + memofs, name, len);
695	memofs += len;
696	}
697	}
698
699	errorno = errno;
700	closedir (dirp);
701
702	if (errorno)
703	{
704	free (names);
705	errno = errorno;
706	res = -1;
707	}
708
709	*namesp = (void *)names;
710	return res;
711	}
712
713	/*****************************************************************************/
714
715	static void *aio_proc (void *thr_arg)
716	{
717	aio_req req;
718	int type;
719
720	do
721	{
722	pthread_mutex_lock (&reqlock);
723
724	for (;;)
725	{
726	req = reqs;
727
728	if (reqs)
729	{
730	reqs = reqs->next;
731	if (!reqs) reqe = 0;
732	}
733
734	if (req)
735	break;
736
737	pthread_cond_wait (&reqwait, &reqlock);
738	}
739
740	pthread_mutex_unlock (&reqlock);
741
742	errno = 0; /* strictly unnecessary */
743
744	if (!req->cancelled)
745	switch (req->type)
746	{
747	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
748	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
749
750	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
751	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
752
753	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
754	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
755	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
756
757	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
758	case REQ_CLOSE: req->result = close (req->fd); break;
759	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
760	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
761	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
762	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
763	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
764
765	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
766	case REQ_FSYNC: req->result = fsync (req->fd); break;
767	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
768
769	case REQ_SLEEP:
770	{
771	struct timeval tv;
772
773	tv.tv_sec = req->fd;
774	tv.tv_usec = req->fd2;
775
776	req->result = select (0, 0, 0, 0, &tv);
777	}
778
779	case REQ_QUIT:
780	break;
781
782	default:
783	req->result = ENOSYS;
784	break;
785	}
786
787	req->errorno = errno;
788
789	pthread_mutex_lock (&reslock);
790
791	req->next = 0;
792
793	if (rese)
794	{
795	rese->next = req;
796	rese = req;
797	}
798	else
799	{
800	rese = ress = req;
801
802	/* write a dummy byte to the pipe so fh becomes ready */
803	write (respipe [1], &respipe, 1);
804	}
805
806	pthread_mutex_unlock (&reslock);
807	}
808	while (type != REQ_QUIT);
809
810	return 0;
811	}
812
813	/*****************************************************************************/
814
815	static void atfork_prepare (void)
816	{
817	pthread_mutex_lock (&reqlock);
818	pthread_mutex_lock (&reslock);
819	#if !HAVE_PREADWRITE
820	pthread_mutex_lock (&preadwritelock);
821	#endif
822	#if !HAVE_READDIR_R
823	pthread_mutex_lock (&readdirlock);
824	#endif
825	}
826
827	static void atfork_parent (void)
828	{
829	#if !HAVE_READDIR_R
830	pthread_mutex_unlock (&readdirlock);
831	#endif
832	#if !HAVE_PREADWRITE
833	pthread_mutex_unlock (&preadwritelock);
834	#endif
835	pthread_mutex_unlock (&reslock);
836	pthread_mutex_unlock (&reqlock);
837	}	485	}
838		486
839	static void atfork_child (void)	487	static void atfork_child (void)
840	{	488	{
841	aio_req prv;
842
843	started = 0;
844
845	while (reqs)
846	{
847	prv = reqs;
848	reqs = prv->next;
849	req_free (prv);
850	}
851
852	reqs = reqe = 0;
853
854	while (ress)
855	{
856	prv = ress;
857	ress = prv->next;
858	req_free (prv);
859	}
860
861	ress = rese = 0;
862
863	close (respipe [0]);
864	close (respipe [1]);
865	create_pipe ();	489	create_respipe ();
		490	}
866		491
867	atfork_parent ();	492	static SV *
		493	get_cb (SV *cb_sv)
		494	{
		495	SvGETMAGIC (cb_sv);
		496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
868	}	497	}
869		498
870	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
871	aio_req req; \	501	aio_req req; \
		502	int req_pri = next_pri; \
		503	next_pri = EIO_PRI_DEFAULT; \
872	\	504	\
873	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
874	croak ("callback must be undef or of reference type"); \
875	\	506	\
876	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
877	if (!req) \	508	if (!req) \
878	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
879	\	510	\
880	req->callback = newSVsv (callback)	511	req->callback = SvREFCNT_inc (cb_cv); \
		512	req->pri = req_pri
881		513
882	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
883	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
884	\	518	\
885	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
886	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
887		521
888	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
889		523
890	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
891		525
892	BOOT:	526	BOOT:
893	{	527	{
		528	static const struct {
		529	const char *name;
		530	IV iv;
		531	} *civ, const_iv[] = {
		532	# define const_iv(name, value) { # name, (IV) value },
		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
		534	const_iv (EXDEV , EXDEV)
		535	const_iv (ENOSYS , ENOSYS)
		536	const_iv (O_RDONLY, O_RDONLY)
		537	const_iv (O_WRONLY, O_WRONLY)
		538	const_iv (O_CREAT , O_CREAT)
		539	const_iv (O_TRUNC , O_TRUNC)
		540	#ifndef _WIN32
		541	const_iv (S_IFIFO , S_IFIFO)
		542	#endif
		543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		549
		550	const_eio (MS_ASYNC)
		551	const_eio (MS_INVALIDATE)
		552	const_eio (MS_SYNC)
		553
		554	const_eio (MT_MODIFY)
		555
		556	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		557	const_eio (SYNC_FILE_RANGE_WRITE)
		558	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		559
		560	const_eio (READDIR_DENTS)
		561	const_eio (READDIR_DIRS_FIRST)
		562	const_eio (READDIR_STAT_ORDER)
		563	const_eio (READDIR_FOUND_UNKNOWN)
		564
		565	const_eio (DT_UNKNOWN)
		566	const_eio (DT_FIFO)
		567	const_eio (DT_CHR)
		568	const_eio (DT_DIR)
		569	const_eio (DT_BLK)
		570	const_eio (DT_REG)
		571	const_eio (DT_LNK)
		572	const_eio (DT_SOCK)
		573	const_eio (DT_WHT)
		574	};
		575
894	HV *stash = gv_stashpv ("IO::AIO", 1);	576	aio_stash = gv_stashpv ("IO::AIO" , 1);
895	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	577	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
896	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	578	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
897	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
898		579
		580	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		581	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		582
899	create_pipe ();	583	create_respipe ();
900	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
901	}
902		584
		585	if (eio_init (want_poll, done_poll) < 0)
		586	croak ("IO::AIO: unable to initialise eio library");
		587
		588	/* atfork child called in fifo order, so before eio's handler */
		589	X_THREAD_ATFORK (0, 0, atfork_child);
		590	}
		591
903	void	592	void
904	min_parallel (nthreads)	593	max_poll_reqs (int nreqs)
905	int nthreads
906	PROTOTYPE: $	594	PROTOTYPE: $
		595	CODE:
		596	eio_set_max_poll_reqs (nreqs);
907		597
908	void	598	void
909	max_parallel (nthreads)	599	max_poll_time (double nseconds)
910	int nthreads
911	PROTOTYPE: $	600	PROTOTYPE: $
912
913	int
914	max_outstanding (nreqs)
915	int nreqs
916	PROTOTYPE: $
917	CODE:	601	CODE:
918	RETVAL = max_outstanding;	602	eio_set_max_poll_time (nseconds);
		603
		604	void
		605	min_parallel (int nthreads)
		606	PROTOTYPE: $
		607	CODE:
		608	eio_set_min_parallel (nthreads);
		609
		610	void
		611	max_parallel (int nthreads)
		612	PROTOTYPE: $
		613	CODE:
		614	eio_set_max_parallel (nthreads);
		615
		616	void
		617	max_idle (int nthreads)
		618	PROTOTYPE: $
		619	CODE:
		620	eio_set_max_idle (nthreads);
		621
		622	void
		623	max_outstanding (int maxreqs)
		624	PROTOTYPE: $
		625	CODE:
919	max_outstanding = nreqs;	626	max_outstanding = maxreqs;
920		627
921	void	628	void
922	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	629	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
923	SV * pathname
924	int flags
925	int mode
926	SV * callback
927	PROTOTYPE: $$$;$	630	PROTOTYPE: $$$;$
928	PPCODE:	631	PPCODE:
929	{	632	{
930	dREQ;	633	dREQ;
931		634
932	req->type = REQ_OPEN;	635	req->type = EIO_OPEN;
933	req->data = newSVsv (pathname);	636	req->sv1 = newSVsv (pathname);
934	req->dataptr = SvPVbyte_nolen (req->data);	637	req->ptr1 = SvPVbyte_nolen (req->sv1);
935	req->fd = flags;	638	req->int1 = flags;
936	req->mode = mode;	639	req->int2 = mode;
937		640
938	REQ_SEND;	641	REQ_SEND;
939	}	642	}
940		643
941	void	644	void
942	aio_close (fh,callback=&PL_sv_undef)	645	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
943	SV * fh
944	SV * callback
945	PROTOTYPE: $;$	646	PROTOTYPE: $;$
946	ALIAS:	647	ALIAS:
947	aio_close = REQ_CLOSE
948	aio_fsync = REQ_FSYNC	648	aio_fsync = EIO_FSYNC
949	aio_fdatasync = REQ_FDATASYNC	649	aio_fdatasync = EIO_FDATASYNC
950	PPCODE:	650	PPCODE:
951	{	651	{
		652	int fd = s_fileno_croak (fh, 0);
952	dREQ;	653	dREQ;
953		654
954	req->type = ix;	655	req->type = ix;
955	req->fh = newSVsv (fh);	656	req->sv1 = newSVsv (fh);
956	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	657	req->int1 = fd;
957		658
958	REQ_SEND (req);	659	REQ_SEND (req);
959	}	660	}
960		661
961	void	662	void
		663	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		664	PROTOTYPE: $$$$;$
		665	PPCODE:
		666	{
		667	int fd = s_fileno_croak (fh, 0);
		668	dREQ;
		669
		670	req->type = EIO_SYNC_FILE_RANGE;
		671	req->sv1 = newSVsv (fh);
		672	req->int1 = fd;
		673	req->offs = offset;
		674	req->size = nbytes;
		675	req->int2 = flags;
		676
		677	REQ_SEND (req);
		678	}
		679
		680	void
		681	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		682	PROTOTYPE: $;$
		683	PPCODE:
		684	{
		685	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		686	int fd = s_fileno_croak (fh, 0);
		687	dREQ;
		688
		689	if (close_pipe < 0)
		690	{
		691	int pipefd [2];
		692
		693	if (pipe (pipefd) < 0
		694	|| close (pipefd [1]) < 0
		695	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		696	abort (); /*D*/
		697
		698	close_pipe = pipefd [0];
		699	}
		700
		701	req->type = EIO_DUP2;
		702	req->int1 = close_pipe;
		703	req->sv2 = newSVsv (fh);
		704	req->int2 = fd;
		705
		706	REQ_SEND (req);
		707	}
		708
		709	void
962	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	710	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
963	SV * fh
964	UV offset
965	UV length
966	SV * data
967	UV dataoffset
968	SV * callback
969	ALIAS:	711	ALIAS:
970	aio_read = REQ_READ	712	aio_read = EIO_READ
971	aio_write = REQ_WRITE	713	aio_write = EIO_WRITE
972	PROTOTYPE: $$$$$;$	714	PROTOTYPE: $$$$$;$
973	PPCODE:	715	PPCODE:
974	{	716	{
975	aio_req req;
976	STRLEN svlen;	717	STRLEN svlen;
		718	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
977	char *svptr = SvPVbyte (data, svlen);	719	char *svptr = SvPVbyte (data, svlen);
978		720	UV len = SvUV (length);
979	SvUPGRADE (data, SVt_PV);
980	SvPOK_on (data);
981		721
982	if (dataoffset < 0)	722	if (dataoffset < 0)
983	dataoffset += svlen;	723	dataoffset += svlen;
984		724
985	if (dataoffset < 0 || dataoffset > svlen)	725	if (dataoffset < 0 || dataoffset > svlen)
986	croak ("data offset outside of string");	726	croak ("dataoffset outside of data scalar");
987		727
988	if (ix == REQ_WRITE)	728	if (ix == EIO_WRITE)
989	{	729	{
990	/* write: check length and adjust. */	730	/* write: check length and adjust. */
991	if (length < 0 || length + dataoffset > svlen)	731	if (!SvOK (length) || len + dataoffset > svlen)
992	length = svlen - dataoffset;	732	len = svlen - dataoffset;
993	}	733	}
994	else	734	else
995	{	735	{
996	/* read: grow scalar as necessary */	736	/* read: check type and grow scalar as necessary */
		737	SvUPGRADE (data, SVt_PV);
997	svptr = SvGROW (data, length + dataoffset);	738	svptr = SvGROW (data, len + dataoffset + 1);
998	}	739	}
999
1000	if (length < 0)
1001	croak ("length must not be negative");
1002		740
1003	{	741	{
1004	dREQ;	742	dREQ;
1005		743
1006	req->type = ix;	744	req->type = ix;
1007	req->fh = newSVsv (fh);	745	req->sv1 = newSVsv (fh);
1008	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	746	req->int1 = fd;
1009	: IoOFP (sv_2io (fh)));	747	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1010	req->offset = offset;	748	req->size = len;
1011	req->length = length;
1012	req->data = SvREFCNT_inc (data);	749	req->sv2 = SvREFCNT_inc (data);
1013	req->dataptr = (char *)svptr + dataoffset;	750	req->ptr2 = (char *)svptr + dataoffset;
		751	req->stroffset = dataoffset;
1014		752
1015	if (!SvREADONLY (data))	753	if (!SvREADONLY (data))
1016	{	754	{
1017	SvREADONLY_on (data);	755	SvREADONLY_on (data);
1018	req->data2ptr = (void *)data;	756	req->flags |= FLAG_SV2_RO_OFF;
1019	}	757	}
1020		758
1021	REQ_SEND;	759	REQ_SEND;
1022	}	760	}
1023	}	761	}
1024		762
1025	void	763	void
		764	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		765	PROTOTYPE: $$;$
		766	PPCODE:
		767	{
		768	SV *data;
		769	dREQ;
		770
		771	req->type = EIO_READLINK;
		772	req->sv1 = newSVsv (path);
		773	req->ptr1 = SvPVbyte_nolen (req->sv1);
		774
		775	REQ_SEND;
		776	}
		777
		778	void
1026	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	779	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1027	SV * out_fh
1028	SV * in_fh
1029	UV in_offset
1030	UV length
1031	SV * callback
1032	PROTOTYPE: $$$$;$	780	PROTOTYPE: $$$$;$
1033	PPCODE:	781	PPCODE:
1034	{	782	{
		783	int ifd = s_fileno_croak (in_fh , 0);
		784	int ofd = s_fileno_croak (out_fh, 1);
1035	dREQ;	785	dREQ;
1036		786
1037	req->type = REQ_SENDFILE;	787	req->type = EIO_SENDFILE;
1038	req->fh = newSVsv (out_fh);	788	req->sv1 = newSVsv (out_fh);
1039	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	789	req->int1 = ofd;
1040	req->fh2 = newSVsv (in_fh);	790	req->sv2 = newSVsv (in_fh);
1041	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	791	req->int2 = ifd;
1042	req->offset = in_offset;	792	req->offs = in_offset;
1043	req->length = length;	793	req->size = length;
1044		794
1045	REQ_SEND;	795	REQ_SEND;
1046	}	796	}
1047		797
1048	void	798	void
1049	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	799	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1050	SV * fh
1051	UV offset
1052	IV length
1053	SV * callback
1054	PROTOTYPE: $$$;$	800	PROTOTYPE: $$$;$
1055	PPCODE:	801	PPCODE:
1056	{	802	{
		803	int fd = s_fileno_croak (fh, 0);
1057	dREQ;	804	dREQ;
1058		805
1059	req->type = REQ_READAHEAD;	806	req->type = EIO_READAHEAD;
1060	req->fh = newSVsv (fh);	807	req->sv1 = newSVsv (fh);
1061	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	808	req->int1 = fd;
1062	req->offset = offset;	809	req->offs = offset;
1063	req->length = length;	810	req->size = length;
1064		811
1065	REQ_SEND;	812	REQ_SEND;
1066	}	813	}
1067		814
1068	void	815	void
1069	aio_stat (fh_or_path,callback=&PL_sv_undef)	816	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1070	SV * fh_or_path
1071	SV * callback
1072	ALIAS:	817	ALIAS:
1073	aio_stat = REQ_STAT	818	aio_stat = EIO_STAT
1074	aio_lstat = REQ_LSTAT	819	aio_lstat = EIO_LSTAT
1075	PPCODE:	820	PPCODE:
1076	{	821	{
1077	dREQ;	822	dREQ;
1078		823
1079	New (0, req->statdata, 1, Stat_t);	824	req->sv1 = newSVsv (fh_or_path);
1080	if (!req->statdata)
1081	{
1082	req_free (req);
1083	croak ("out of memory during aio_req->statdata allocation");
1084	}
1085		825
1086	if (SvPOK (fh_or_path))	826	if (SvPOK (req->sv1))
1087	{	827	{
1088	req->type = ix;	828	req->type = ix;
1089	req->data = newSVsv (fh_or_path);
1090	req->dataptr = SvPVbyte_nolen (req->data);	829	req->ptr1 = SvPVbyte_nolen (req->sv1);
1091	}	830	}
1092	else	831	else
1093	{	832	{
1094	req->type = REQ_FSTAT;	833	req->type = EIO_FSTAT;
1095	req->fh = newSVsv (fh_or_path);
1096	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	834	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1097	}	835	}
1098		836
1099	REQ_SEND;	837	REQ_SEND;
1100	}	838	}
1101		839
1102	void	840	void
		841	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		842	PPCODE:
		843	{
		844	dREQ;
		845
		846	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		847	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		848	req->sv1 = newSVsv (fh_or_path);
		849
		850	if (SvPOK (req->sv1))
		851	{
		852	req->type = EIO_UTIME;
		853	req->ptr1 = SvPVbyte_nolen (req->sv1);
		854	}
		855	else
		856	{
		857	req->type = EIO_FUTIME;
		858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		859	}
		860
		861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
		870	req->sv1 = newSVsv (fh_or_path);
		871	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		872
		873	if (SvPOK (req->sv1))
		874	{
		875	req->type = EIO_TRUNCATE;
		876	req->ptr1 = SvPVbyte_nolen (req->sv1);
		877	}
		878	else
		879	{
		880	req->type = EIO_FTRUNCATE;
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	}
		883
		884	REQ_SEND;
		885	}
		886
		887	void
		888	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		889	ALIAS:
		890	aio_chmod = EIO_CHMOD
		891	aio_mkdir = EIO_MKDIR
		892	PPCODE:
		893	{
		894	dREQ;
		895
		896	req->int2 = mode;
		897	req->sv1 = newSVsv (fh_or_path);
		898
		899	if (SvPOK (req->sv1))
		900	{
		901	req->type = ix;
		902	req->ptr1 = SvPVbyte_nolen (req->sv1);
		903	}
		904	else
		905	{
		906	req->type = EIO_FCHMOD;
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	}
		909
		910	REQ_SEND;
		911	}
		912
		913	void
		914	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		915	PPCODE:
		916	{
		917	dREQ;
		918
		919	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		920	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		921	req->sv1 = newSVsv (fh_or_path);
		922
		923	if (SvPOK (req->sv1))
		924	{
		925	req->type = EIO_CHOWN;
		926	req->ptr1 = SvPVbyte_nolen (req->sv1);
		927	}
		928	else
		929	{
		930	req->type = EIO_FCHOWN;
		931	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		932	}
		933
		934	REQ_SEND;
		935	}
		936
		937	void
		938	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
		942
		943	req->type = EIO_READDIR;
		944	req->sv1 = newSVsv (pathname);
		945	req->ptr1 = SvPVbyte_nolen (req->sv1);
		946	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		947
		948	if (flags & EIO_READDIR_DENTS)
		949	req->int1 |= EIO_READDIR_CUSTOM2;
		950
		951	REQ_SEND;
		952	}
		953
		954	void
1103	aio_unlink (pathname,callback=&PL_sv_undef)	955	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1104	SV * pathname
1105	SV * callback
1106	ALIAS:	956	ALIAS:
1107	aio_unlink = REQ_UNLINK	957	aio_unlink = EIO_UNLINK
1108	aio_rmdir = REQ_RMDIR	958	aio_rmdir = EIO_RMDIR
1109	aio_readdir = REQ_READDIR	959	aio_readdir = EIO_READDIR
1110	PPCODE:	960	PPCODE:
1111	{	961	{
1112	dREQ;	962	dREQ;
1113		963
1114	req->type = ix;	964	req->type = ix;
1115	req->data = newSVsv (pathname);	965	req->sv1 = newSVsv (pathname);
1116	req->dataptr = SvPVbyte_nolen (req->data);	966	req->ptr1 = SvPVbyte_nolen (req->sv1);
		967
		968	REQ_SEND;
		969	}
		970
		971	void
		972	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_link = EIO_LINK
		975	aio_symlink = EIO_SYMLINK
		976	aio_rename = EIO_RENAME
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->type = ix;
		982	req->sv1 = newSVsv (oldpath);
		983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984	req->sv2 = newSVsv (newpath);
		985	req->ptr2 = SvPVbyte_nolen (req->sv2);
1117		986
1118	REQ_SEND;	987	REQ_SEND;
1119	}	988	}
1120		989
1121	void	990	void
1122	aio_link (oldpath,newpath,callback=&PL_sv_undef)	991	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1123	SV * oldpath
1124	SV * newpath
1125	SV * callback
1126	ALIAS:
1127	aio_link = REQ_LINK
1128	aio_symlink = REQ_SYMLINK
1129	aio_rename = REQ_RENAME
1130	PPCODE:	992	PPCODE:
1131	{	993	{
1132	dREQ;	994	dREQ;
1133		995
1134	req->type = ix;	996	req->type = EIO_MKNOD;
1135	req->fh = newSVsv (oldpath);	997	req->sv1 = newSVsv (pathname);
1136	req->data2ptr = SvPVbyte_nolen (req->fh);	998	req->ptr1 = SvPVbyte_nolen (req->sv1);
1137	req->data = newSVsv (newpath);	999	req->int2 = (mode_t)mode;
1138	req->dataptr = SvPVbyte_nolen (req->data);	1000	req->offs = dev;
1139		1001
1140	REQ_SEND;	1002	REQ_SEND;
1141	}	1003	}
1142		1004
1143	void	1005	void
		1006	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1007	ALIAS:
		1008	aio_mtouch = EIO_MTOUCH
		1009	aio_msync = EIO_MSYNC
		1010	PROTOTYPE: $$$$;$
		1011	PPCODE:
		1012	{
		1013	STRLEN svlen;
		1014	UV len = SvUV (length);
		1015	char *svptr = SvPVbyte (data, svlen);
		1016
		1017	if (offset < 0)
		1018	offset += svlen;
		1019
		1020	if (offset < 0 || offset > svlen)
		1021	croak ("offset outside of scalar");
		1022
		1023	if (!SvOK (length) || len + offset > svlen)
		1024	len = svlen - offset;
		1025
		1026	{
		1027	dREQ;
		1028
		1029	req->type = ix;
		1030	req->size = len;
		1031	req->sv2 = SvREFCNT_inc (data);
		1032	req->ptr2 = (char *)svptr + offset;
		1033	req->int1 = flags;
		1034
		1035	REQ_SEND;
		1036	}
		1037	}
		1038
		1039	void
1144	aio_sleep (delay,callback=&PL_sv_undef)	1040	aio_busy (double delay, SV *callback=&PL_sv_undef)
1145	double delay
1146	SV * callback
1147	PPCODE:	1041	PPCODE:
1148	{	1042	{
1149	dREQ;	1043	dREQ;
1150		1044
1151	req->type = REQ_SLEEP;	1045	req->type = EIO_BUSY;
1152	req->fd = delay < 0. ? 0 : delay;	1046	req->nv1 = delay < 0. ? 0. : delay;
1153	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1154		1047
1155	REQ_SEND;	1048	REQ_SEND;
1156	}	1049	}
1157		1050
1158	void	1051	void
1159	aio_group (callback=&PL_sv_undef)	1052	aio_group (SV *callback=&PL_sv_undef)
1160	SV * callback
1161	PROTOTYPE: ;$	1053	PROTOTYPE: ;$
1162	PPCODE:	1054	PPCODE:
1163	{	1055	{
1164	dREQ;	1056	dREQ;
		1057
1165	req->type = REQ_GROUP;	1058	req->type = EIO_GROUP;
1166	req->grp_next = req;
1167	req->grp_prev = req;
1168		1059
1169	req_send (req);	1060	req_submit (req);
1170	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1061	XPUSHs (req_sv (req, aio_grp_stash));
1171	}	1062	}
		1063
		1064	void
		1065	aio_nop (SV *callback=&PL_sv_undef)
		1066	ALIAS:
		1067	aio_nop = EIO_NOP
		1068	aio_sync = EIO_SYNC
		1069	PPCODE:
		1070	{
		1071	dREQ;
		1072
		1073	req->type = ix;
		1074
		1075	REQ_SEND;
		1076	}
		1077
		1078	int
		1079	aioreq_pri (int pri = 0)
		1080	PROTOTYPE: ;$
		1081	CODE:
		1082	RETVAL = next_pri;
		1083	if (items > 0)
		1084	{
		1085	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1086	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1087	next_pri = pri;
		1088	}
		1089	OUTPUT:
		1090	RETVAL
		1091
		1092	void
		1093	aioreq_nice (int nice = 0)
		1094	CODE:
		1095	nice = next_pri - nice;
		1096	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1097	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1098	next_pri = nice;
1172		1099
1173	void	1100	void
1174	flush ()	1101	flush ()
1175	PROTOTYPE:	1102	PROTOTYPE:
1176	CODE:	1103	CODE:
1177	while (nreqs)	1104	while (eio_nreqs ())
1178	{	1105	{
1179	poll_wait ();	1106	poll_wait ();
1180	poll_cb ();	1107	poll_cb ();
1181	}	1108	}
1182		1109
1183	void	1110	int
1184	poll()	1111	poll()
1185	PROTOTYPE:	1112	PROTOTYPE:
1186	CODE:	1113	CODE:
1187	if (nreqs)
1188	{
1189	poll_wait ();	1114	poll_wait ();
1190	poll_cb ();	1115	RETVAL = poll_cb ();
1191	}	1116	OUTPUT:
		1117	RETVAL
1192		1118
1193	int	1119	int
1194	poll_fileno()	1120	poll_fileno()
1195	PROTOTYPE:	1121	PROTOTYPE:
1196	CODE:	1122	CODE:
1197	RETVAL = respipe [0];	1123	RETVAL = s_epipe_fd (&respipe);
1198	OUTPUT:	1124	OUTPUT:
1199	RETVAL	1125	RETVAL
1200		1126
1201	int	1127	int
1202	poll_cb(...)	1128	poll_cb(...)
…		…
1208		1134
1209	void	1135	void
1210	poll_wait()	1136	poll_wait()
1211	PROTOTYPE:	1137	PROTOTYPE:
1212	CODE:	1138	CODE:
1213	if (nreqs)
1214	poll_wait ();	1139	poll_wait ();
1215		1140
1216	int	1141	int
1217	nreqs()	1142	nreqs()
1218	PROTOTYPE:	1143	PROTOTYPE:
1219	CODE:	1144	CODE:
1220	RETVAL = nreqs;	1145	RETVAL = eio_nreqs ();
1221	OUTPUT:	1146	OUTPUT:
1222	RETVAL	1147	RETVAL
1223		1148
		1149	int
		1150	nready()
		1151	PROTOTYPE:
		1152	CODE:
		1153	RETVAL = eio_nready ();
		1154	OUTPUT:
		1155	RETVAL
		1156
		1157	int
		1158	npending()
		1159	PROTOTYPE:
		1160	CODE:
		1161	RETVAL = eio_npending ();
		1162	OUTPUT:
		1163	RETVAL
		1164
		1165	int
		1166	nthreads()
		1167	PROTOTYPE:
		1168	CODE:
		1169	RETVAL = eio_nthreads ();
		1170	OUTPUT:
		1171	RETVAL
		1172
		1173	int
		1174	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1175	PROTOTYPE: $$$$
		1176	CODE:
		1177	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1178	RETVAL = posix_fadvise (fh, offset, length, advice);
		1179	#else
		1180	RETVAL = errno = ENOSYS;
		1181	#endif
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	ssize_t
		1186	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	void _on_next_submit (SV *cb)
		1194	CODE:
		1195	SvREFCNT_dec (on_next_submit);
		1196	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1197
1224	PROTOTYPES: DISABLE	1198	PROTOTYPES: DISABLE
1225		1199
1226	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1200	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1227		1201
1228	void	1202	void
1229	cancel (aio_req_ornot req)	1203	cancel (aio_req_ornot req)
1230	PROTOTYPE:
1231	CODE:	1204	CODE:
1232	req_cancel (req);	1205	eio_cancel (req);
		1206
		1207	void
		1208	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1209	PPCODE:
		1210	{
		1211	if (GIMME_V != G_VOID)
		1212	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1213
		1214	if (items > 1)
		1215	{
		1216	SV *cb_cv =get_cb (callback);
		1217
		1218	SvREFCNT_dec (req->callback);
		1219	req->callback = SvREFCNT_inc (cb_cv);
		1220	}
		1221	}
1233		1222
1234	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1223	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1235		1224
1236	void	1225	void
1237	add (aio_req grp, ...)	1226	add (aio_req grp, ...)
1238	PPCODE:	1227	PPCODE:
1239	{	1228	{
1240	int i;	1229	int i;
1241		1230
		1231	if (grp->int1 == 2)
		1232	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1233
1242	for (i = 1; i < items; ++i )	1234	for (i = 1; i < items; ++i )
1243	{	1235	{
		1236	aio_req req;
		1237
1244	if (GIMME_V != G_VOID)	1238	if (GIMME_V != G_VOID)
1245	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1246		1240
1247	aio_req req = SvAIO_REQ (ST (i));	1241	req = SvAIO_REQ (ST (i));
1248		1242
1249	if (req)	1243	if (req)
1250	{	1244	eio_grp_add (grp, req);
1251	req->grp_prev = grp;
1252	req->grp_next = grp->grp_next;
1253	grp->grp_next->grp_prev = req;
1254	grp->grp_next = req;
1255
1256	req->grp = grp;
1257	}	1245	}
1258	}
1259	}	1246	}
		1247
		1248	void
		1249	cancel_subs (aio_req_ornot req)
		1250	CODE:
		1251	req_cancel_subs (req);
1260		1252
1261	void	1253	void
1262	result (aio_req grp, ...)	1254	result (aio_req grp, ...)
1263	CODE:	1255	CODE:
1264	{	1256	{
1265	int i;	1257	int i;
1266	AV *av = newAV ();	1258	AV *av;
1267		1259
1268	if (grp->data)	1260	grp->errorno = errno;
1269	SvREFCNT_dec (grp->data);
1270		1261
		1262	av = newAV ();
		1263	av_extend (av, items - 1);
		1264
1271	for (i = 1; i < items; ++i )	1265	for (i = 1; i < items; ++i )
1272	av_push (av, newSVsv (ST (i)));	1266	av_push (av, newSVsv (ST (i)));
1273		1267
		1268	SvREFCNT_dec (grp->sv1);
1274	grp->data = (SV *)av;	1269	grp->sv1 = (SV *)av;
1275	}	1270	}
1276		1271
		1272	void
		1273	errno (aio_req grp, int errorno = errno)
		1274	CODE:
		1275	grp->errorno = errorno;
		1276
		1277	void
		1278	limit (aio_req grp, int limit)
		1279	CODE:
		1280	eio_grp_limit (grp, limit);
		1281
		1282	void
		1283	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1284	CODE:
		1285	{
		1286	SvREFCNT_dec (grp->sv2);
		1287	grp->sv2 = newSVsv (callback);
		1288	grp->feed = aio_grp_feed;
		1289
		1290	if (grp->int2 <= 0)
		1291	grp->int2 = 2;
		1292
		1293	eio_grp_limit (grp, grp->int2);
		1294	}
		1295

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