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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.58 by root, Mon Oct 23 18:48:08 2006 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 2009 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
50	enum {	99	#define expect_false(expr) expect ((expr) != 0, 0)
51	REQ_QUIT,	100	#define expect_true(expr) expect ((expr) != 0, 1)
52	REQ_OPEN, REQ_CLOSE,	101
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	102	/*****************************************************************************/
54	REQ_SENDFILE,	103
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	104	static HV *stash;
56	REQ_FSYNC, REQ_FDATASYNC,	105	typedef SV SV8; /* byte-sv, used for argument-checking */
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	106	typedef int aio_rfd; /* read file desriptor */
58	REQ_READDIR,	107	typedef int aio_wfd; /* write file descriptor */
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};
63		108
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		111
67	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
68	{
69	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;	113	SV *callback; \
76	SV *fh, *fh2;	114	SV *sv1, *sv2; \
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;	115	STRLEN stroffset; \
87	mode_t mode; /* open */	116	SV *self;
88	unsigned char pri;	117
89	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
90	} aio_cb;	119
		120	#include "libeio/eio.h"
		121
		122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
91		151
92	enum {	152	enum {
93	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	};	154	};
95		155
		156	#include "libeio/eio.c"
		157
96	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
98		160
99	static int started, wanted;	161	static SV *on_next_submit;
100	static volatile int nreqs;	162	static int next_pri = EIO_PRI_DEFAULT;
101	static int max_outstanding = 1<<30;	163	static int max_outstanding;
102	static int respipe [2];
103		164
104	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
105	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
106	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
107		166
108	static volatile aio_req reqs, reqe; /* queue start, queue end */	167	static void req_destroy (aio_req req);
109	static volatile aio_req ress, rese; /* queue start, queue end */
110
111	static void req_invoke (aio_req req);	168	static void req_cancel (aio_req req);
112	static void req_free (aio_req req);	169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
113		183
114	/* must be called at most once */	184	/* must be called at most once */
115	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
116	{	186	{
117	if (!req->self)	187	if (!req->self)
…		…
135	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
136	}	206	}
137		207
138	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
139	{	209	{
140	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
141	{	211	{
142	int old_len = grp->length;	212	dSP;
143		213
144	if (grp->fh2 && SvOK (grp->fh2))	214	ENTER;
		215	SAVETMPS;
		216	PUSHMARK (SP);
		217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		218	PUTBACK;
		219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		220	SPAGAIN;
		221	FREETMPS;
		222	LEAVE;
		223	}
		224	}
		225
		226	static void req_submit (eio_req *req)
		227	{
		228	eio_submit (req);
		229
		230	if (expect_false (on_next_submit))
		231	{
		232	dSP;
		233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
		240	}
		241	}
		242
		243	static int req_invoke (eio_req *req)
		244	{
		245	dSP;
		246
		247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
		251	{
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
145	{	258	{
146	dSP;	259	case EIO_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
147		262
148	ENTER;	263	if (req->result >= 0)
149	SAVETMPS;	264	{
150	PUSHMARK (SP);	265	int i;
151	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	266	char *names = (char *)req->ptr2;
152	PUTBACK;	267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
153	call_sv (grp->fh2, G_VOID | G_EVAL);	268	AV *av = newAV ();
154	SPAGAIN;	269
155	FREETMPS;	270	av_extend (av, req->result - 1);
156	LEAVE;	271
		272	for (i = 0; i < req->result; ++i)
		273	{
		274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
		298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
		306	names += SvCUR (name) + 1;
		307	}
		308	}
		309
		310	rv = sv_2mortal (newRV_noinc ((SV *)av));
		311	}
		312
		313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		317	}
		318	break;
		319
		320	case EIO_OPEN:
		321	{
		322	/* convert fd to fh */
		323	SV *fh = &PL_sv_undef;
		324
		325	if (req->result >= 0)
		326	{
		327	GV *gv = (GV *)sv_newmortal ();
		328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
		334
		335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
		347	PUSHs (fh);
		348	}
		349	break;
		350
		351	case EIO_GROUP:
		352	req->int1 = 2; /* mark group as finished */
		353
		354	if (req->sv1)
		355	{
		356	int i;
		357	AV *av = (AV *)req->sv1;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case EIO_NOP:
		366	case EIO_BUSY:
		367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
		397
		398	default:
		399	PUSHs (sv_2mortal (newSViv (req->result)));
		400	break;
157	}	401	}
158		402
159	/* stop if no progress has been made */	403	errno = req->errorno;
160	if (old_len == grp->length)	404
161	{	405	PUTBACK;
162	SvREFCNT_dec (grp->fh2);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
163	grp->fh2 = 0;	407	SPAGAIN;
164	break;	408
165	}	409	FREETMPS;
		410	LEAVE;
		411
		412	PUTBACK;
166	}	413	}
167	}
168		414
169	static void aio_grp_dec (aio_req grp)	415	return !!SvTRUE (ERRSV);
170	{
171	--grp->length;
172
173	/* call feeder, if applicable */
174	aio_grp_feed (grp);
175
176	/* finish, if done */
177	if (!grp->length && grp->fd)
178	{
179	req_invoke (grp);
180	req_free (grp);
181	}
182	}	416	}
183		417
184	static void poll_wait ()
185	{
186	if (nreqs && !ress)
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191
192	select (respipe [0] + 1, &rfd, 0, 0, 0);
193	}
194	}
195
196	static void req_invoke (aio_req req)
197	{
198	dSP;
199	int errorno = errno;
200
201	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
202	return;
203
204	errno = req->errorno;
205
206	ENTER;
207	SAVETMPS;
208	PUSHMARK (SP);
209	EXTEND (SP, 1);
210
211	switch (req->type)
212	{
213	case REQ_READDIR:
214	{
215	SV *rv = &PL_sv_undef;
216
217	if (req->result >= 0)
218	{
219	char *buf = req->data2ptr;
220	AV *av = newAV ();
221
222	while (req->result)
223	{
224	SV *sv = newSVpv (buf, 0);
225
226	av_push (av, sv);
227	buf += SvCUR (sv) + 1;
228	req->result--;
229	}
230
231	rv = sv_2mortal (newRV_noinc ((SV *)av));
232	}
233
234	PUSHs (rv);
235	}
236	break;
237
238	case REQ_OPEN:
239	{
240	/* convert fd to fh */
241	SV *fh;
242
243	PUSHs (sv_2mortal (newSViv (req->result)));
244	PUTBACK;
245	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
246	SPAGAIN;
247
248	fh = SvREFCNT_inc (POPs);
249
250	PUSHMARK (SP);
251	XPUSHs (sv_2mortal (fh));
252	}
253	break;
254
255	case REQ_GROUP:
256	req->fd = 2; /* mark group as finished */
257
258	if (req->data)
259	{
260	int i;
261	AV *av = (AV *)req->data;
262
263	EXTEND (SP, AvFILL (av) + 1);
264	for (i = 0; i <= AvFILL (av); ++i)
265	PUSHs (*av_fetch (av, i, 0));
266	}
267	break;
268
269	case REQ_NOP:
270	case REQ_SLEEP:
271	break;
272
273	default:
274	PUSHs (sv_2mortal (newSViv (req->result)));
275	break;
276	}
277
278
279	PUTBACK;
280	call_sv (req->callback, G_VOID | G_EVAL);
281	SPAGAIN;
282
283	FREETMPS;
284	LEAVE;
285
286	errno = errorno;
287
288	if (SvTRUE (ERRSV))
289	{
290	req_free (req);
291	croak (0);
292	}
293	}
294
295	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
296	{	419	{
297	if (req->grp)
298	{
299	aio_req grp = req->grp;
300
301	/* unlink request */
302	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
303	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
304
305	if (grp->grp_first == req)
306	grp->grp_first = req->grp_next;
307
308	aio_grp_dec (grp);
309	}
310
311	if (req->self)	420	if (req->self)
312	{	421	{
313	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
314	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
315	}	424	}
316		425
317	SvREFCNT_dec (req->data);
318	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
319	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
320	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
321	Safefree (req->statdata);
322
323	if (req->type == REQ_READDIR && req->result >= 0)
324	free (req->data2ptr);
325		429
326	Safefree (req);	430	Safefree (req);
327	}	431	}
328		432
329	static void req_cancel (aio_req req)	433	static void req_cancel_subs (aio_req grp)
330	{	434	{
331	req->flags |= FLAG_CANCELLED;	435	aio_req sub;
332		436
333	if (req->type == REQ_GROUP)	437	if (grp->type != EIO_GROUP)
		438	return;
		439
		440	SvREFCNT_dec (grp->sv2);
		441	grp->sv2 = 0;
		442
		443	eio_grp_cancel (grp);
		444	}
		445
		446	#ifdef USE_SOCKETS_AS_HANDLES
		447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
		451
		452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
		456
		457	if (respipe [1] >= 0)
		458	respipe_close (TO_SOCKET (respipe [1]));
		459
		460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
334	{	468	{
335	aio_req sub;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		470	croak ("unable to initialize result pipe(2)");
336		471
337	for (sub = req->grp_first; sub; sub = sub->grp_next)	472	respipe_close (respipe [0]);
338	req_cancel (sub);	473	respipe [0] = old_readfd;
339	}	474	}
340	}
341		475
		476	#ifdef _WIN32
		477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
		485
		486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
		489
		490	static void poll_wait (void)
		491	{
		492	fd_set rfd;
		493
		494	while (eio_nreqs ())
		495	{
		496	int size;
		497
		498	X_LOCK (reslock);
		499	size = res_queue.size;
		500	X_UNLOCK (reslock);
		501
		502	if (size)
		503	return;
		504
		505	etp_maybe_start_thread ();
		506
		507	FD_ZERO (&rfd);
		508	FD_SET (respipe [0], &rfd);
		509
		510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		511	}
		512	}
		513
342	static int poll_cb ()	514	static int poll_cb (void)
343	{	515	{
344	dSP;
345	int count = 0;
346	int do_croak = 0;
347	aio_req req;
348
349	for (;;)	516	for (;;)
350	{	517	{
351	pthread_mutex_lock (&reslock);	518	int res = eio_poll ();
352	req = ress;
353		519
354	if (req)	520	if (res > 0)
355	{
356	ress = req->next;
357
358	if (!ress)
359	{
360	/* read any signals sent by the worker threads */
361	char buf [32];
362	while (read (respipe [0], buf, 32) == 32)
363	;
364
365	rese = 0;
366	}
367	}
368
369	pthread_mutex_unlock (&reslock);
370
371	if (!req)
372	break;	521	croak (0);
373		522
374	--nreqs;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
375		525
376	if (req->type == REQ_QUIT)	526	poll_wait ();
377	started--;
378	else if (req->type == REQ_GROUP && req->length)
379	{
380	req->fd = 1; /* mark request as delayed */
381	continue;
382	}
383	else
384	{
385	if (req->type == REQ_READ)
386	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
387
388	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
389	SvREADONLY_off (req->data);
390
391	if (req->statdata)
392	{
393	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
394	PL_laststatval = req->result;
395	PL_statcache = *(req->statdata);
396	}
397
398	req_invoke (req);
399
400	count++;
401	}
402
403	req_free (req);
404	}	527	}
405
406	return count;
407	}	528	}
408		529
409	static void *aio_proc(void *arg);
410
411	static void start_thread (void)	530	static void atfork_child (void)
412	{	531	{
413	sigset_t fullsigset, oldsigset;	532	create_respipe ();
414	pthread_t tid;
415	pthread_attr_t attr;
416
417	pthread_attr_init (&attr);
418	pthread_attr_setstacksize (&attr, STACKSIZE);
419	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
420
421	sigfillset (&fullsigset);
422	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
423
424	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
425	started++;
426
427	sigprocmask (SIG_SETMASK, &oldsigset, 0);
428	}	533	}
429		534
430	static void req_send (aio_req req)	535	static SV *
		536	get_cb (SV *cb_sv)
431	{	537	{
432	while (started < wanted && nreqs >= started)	538	HV *st;
433	start_thread ();	539	GV *gvp;
		540	CV *cv;
434		541
435	++nreqs;	542	if (!SvOK (cb_sv))
436
437	pthread_mutex_lock (&reqlock);
438
439	req->next = 0;
440
441	if (reqe)
442	{
443	reqe->next = req;
444	reqe = req;
445	}
446	else
447	reqe = reqs = req;
448
449	pthread_cond_signal (&reqwait);
450	pthread_mutex_unlock (&reqlock);
451
452	if (nreqs > max_outstanding)
453	for (;;)
454	{
455	poll_cb ();
456
457	if (nreqs <= max_outstanding)
458	break;
459
460	poll_wait ();
461	}
462	}
463
464	static void end_thread (void)
465	{
466	aio_req req;
467	Newz (0, req, 1, aio_cb);
468	req->type = REQ_QUIT;
469
470	req_send (req);
471	}
472
473	static void min_parallel (int nthreads)
474	{
475	if (wanted < nthreads)
476	wanted = nthreads;
477	}
478
479	static void max_parallel (int nthreads)
480	{
481	int cur = started;
482
483	if (wanted > nthreads)
484	wanted = nthreads;
485
486	while (cur > wanted)
487	{
488	end_thread ();
489	cur--;
490	}
491
492	while (started > wanted)
493	{
494	poll_wait ();
495	poll_cb ();
496	}
497	}
498
499	static void create_pipe ()
500	{
501	if (pipe (respipe))
502	croak ("unable to initialize result pipe");
503
504	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
505	croak ("cannot set result pipe to nonblocking mode");
506
507	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
508	croak ("cannot set result pipe to nonblocking mode");
509	}
510
511	/*****************************************************************************/
512	/* work around various missing functions */
513
514	#if !HAVE_PREADWRITE
515	# define pread aio_pread
516	# define pwrite aio_pwrite
517
518	/*
519	* make our pread/pwrite safe against themselves, but not against
520	* normal read/write by using a mutex. slows down execution a lot,
521	* but that's your problem, not mine.
522	*/
523	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
524
525	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
526	{
527	ssize_t res;
528	off_t ooffset;
529
530	pthread_mutex_lock (&preadwritelock);
531	ooffset = lseek (fd, 0, SEEK_CUR);
532	lseek (fd, offset, SEEK_SET);
533	res = read (fd, buf, count);
534	lseek (fd, ooffset, SEEK_SET);
535	pthread_mutex_unlock (&preadwritelock);
536
537	return res;
538	}
539
540	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
541	{
542	ssize_t res;
543	off_t ooffset;
544
545	pthread_mutex_lock (&preadwritelock);
546	ooffset = lseek (fd, 0, SEEK_CUR);
547	lseek (fd, offset, SEEK_SET);
548	res = write (fd, buf, count);
549	lseek (fd, offset, SEEK_SET);
550	pthread_mutex_unlock (&preadwritelock);
551
552	return res;
553	}
554	#endif
555
556	#if !HAVE_FDATASYNC
557	# define fdatasync fsync
558	#endif
559
560	#if !HAVE_READAHEAD
561	# define readahead aio_readahead
562
563	static ssize_t readahead (int fd, off_t offset, size_t count)
564	{
565	char readahead_buf[4096];
566
567	while (count > 0)
568	{
569	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
570
571	pread (fd, readahead_buf, len, offset);
572	offset += len;
573	count -= len;
574	}
575
576	errno = 0;
577	}
578	#endif
579
580	#if !HAVE_READDIR_R
581	# define readdir_r aio_readdir_r
582
583	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
584
585	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
586	{
587	struct dirent *e;
588	int errorno;
589
590	pthread_mutex_lock (&readdirlock);
591
592	e = readdir (dirp);
593	errorno = errno;
594
595	if (e)
596	{
597	*res = ent;
598	strcpy (ent->d_name, e->d_name);
599	}
600	else
601	*res = 0;
602
603	pthread_mutex_unlock (&readdirlock);
604
605	errno = errorno;
606	return e ? 0 : -1;
607	}
608	#endif
609
610	/* sendfile always needs emulation */
611	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
612	{
613	ssize_t res;
614
615	if (!count)
616	return 0;	543	return 0;
617		544
618	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
619	# if __linux
620	res = sendfile (ofd, ifd, &offset, count);
621		546
622	# elif __freebsd	547	if (!cv)
623	/*	548	croak ("IO::AIO callback must be undef or a CODE reference");
624	* Of course, the freebsd sendfile is a dire hack with no thoughts
625	* wasted on making it similar to other I/O functions.
626	*/
627	{
628	off_t sbytes;
629	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
630		549
631	if (res < 0 && sbytes)	550	return (SV *)cv;
632	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
633	res = sbytes;
634	}
635
636	# elif __hpux
637	res = sendfile (ofd, ifd, offset, count, 0, 0);
638
639	# elif __solaris
640	{
641	struct sendfilevec vec;
642	size_t sbytes;
643
644	vec.sfv_fd = ifd;
645	vec.sfv_flag = 0;
646	vec.sfv_off = offset;
647	vec.sfv_len = count;
648
649	res = sendfilev (ofd, &vec, 1, &sbytes);
650
651	if (res < 0 && sbytes)
652	res = sbytes;
653	}
654
655	# endif
656	#else
657	res = -1;
658	errno = ENOSYS;
659	#endif
660
661	if (res < 0
662	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
663	#if __solaris
664	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
665	#endif
666	)
667	)
668	{
669	/* emulate sendfile. this is a major pain in the ass */
670	char buf[4096];
671	res = 0;
672
673	while (count)
674	{
675	ssize_t cnt;
676
677	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
678
679	if (cnt <= 0)
680	{
681	if (cnt && !res) res = -1;
682	break;
683	}
684
685	cnt = write (ofd, buf, cnt);
686
687	if (cnt <= 0)
688	{
689	if (cnt && !res) res = -1;
690	break;
691	}
692
693	offset += cnt;
694	res += cnt;
695	count -= cnt;
696	}
697	}
698
699	return res;
700	}
701
702	/* read a full directory */
703	static int scandir_ (const char *path, void **namesp)
704	{
705	DIR *dirp = opendir (path);
706	union
707	{
708	struct dirent d;
709	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
710	} u;
711	struct dirent *entp;
712	char *name, *names;
713	int memlen = 4096;
714	int memofs = 0;
715	int res = 0;
716	int errorno;
717
718	if (!dirp)
719	return -1;
720
721	names = malloc (memlen);
722
723	for (;;)
724	{
725	errno = 0, readdir_r (dirp, &u.d, &entp);
726
727	if (!entp)
728	break;
729
730	name = entp->d_name;
731
732	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
733	{
734	int len = strlen (name) + 1;
735
736	res++;
737
738	while (memofs + len > memlen)
739	{
740	memlen *= 2;
741	names = realloc (names, memlen);
742	if (!names)
743	break;
744	}
745
746	memcpy (names + memofs, name, len);
747	memofs += len;
748	}
749	}
750
751	errorno = errno;
752	closedir (dirp);
753
754	if (errorno)
755	{
756	free (names);
757	errno = errorno;
758	res = -1;
759	}
760
761	*namesp = (void *)names;
762	return res;
763	}
764
765	/*****************************************************************************/
766
767	static void *aio_proc (void *thr_arg)
768	{
769	aio_req req;
770	int type;
771
772	do
773	{
774	pthread_mutex_lock (&reqlock);
775
776	for (;;)
777	{
778	req = reqs;
779
780	if (reqs)
781	{
782	reqs = reqs->next;
783	if (!reqs) reqe = 0;
784	}
785
786	if (req)
787	break;
788
789	pthread_cond_wait (&reqwait, &reqlock);
790	}
791
792	pthread_mutex_unlock (&reqlock);
793
794	errno = 0; /* strictly unnecessary */
795
796	if (!(req->flags & FLAG_CANCELLED))
797	switch (type = req->type) /* remember type for QUIT check */
798	{
799	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
800	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
801
802	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
803	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
804
805	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
806	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
807	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
808
809	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
810	case REQ_CLOSE: req->result = close (req->fd); break;
811	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
812	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
813	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
814	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
815	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
816
817	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
818	case REQ_FSYNC: req->result = fsync (req->fd); break;
819	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
820
821	case REQ_SLEEP:
822	{
823	struct timeval tv;
824
825	tv.tv_sec = req->fd;
826	tv.tv_usec = req->fd2;
827
828	req->result = select (0, 0, 0, 0, &tv);
829	}
830
831	case REQ_GROUP:
832	case REQ_NOP:
833	case REQ_QUIT:
834	break;
835
836	default:
837	req->result = ENOSYS;
838	break;
839	}
840
841	req->errorno = errno;
842
843	pthread_mutex_lock (&reslock);
844
845	req->next = 0;
846
847	if (rese)
848	{
849	rese->next = req;
850	rese = req;
851	}
852	else
853	{
854	rese = ress = req;
855
856	/* write a dummy byte to the pipe so fh becomes ready */
857	write (respipe [1], &respipe, 1);
858	}
859
860	pthread_mutex_unlock (&reslock);
861	}
862	while (type != REQ_QUIT);
863
864	return 0;
865	}
866
867	/*****************************************************************************/
868
869	static void atfork_prepare (void)
870	{
871	pthread_mutex_lock (&reqlock);
872	pthread_mutex_lock (&reslock);
873	#if !HAVE_PREADWRITE
874	pthread_mutex_lock (&preadwritelock);
875	#endif
876	#if !HAVE_READDIR_R
877	pthread_mutex_lock (&readdirlock);
878	#endif
879	}
880
881	static void atfork_parent (void)
882	{
883	#if !HAVE_READDIR_R
884	pthread_mutex_unlock (&readdirlock);
885	#endif
886	#if !HAVE_PREADWRITE
887	pthread_mutex_unlock (&preadwritelock);
888	#endif
889	pthread_mutex_unlock (&reslock);
890	pthread_mutex_unlock (&reqlock);
891	}
892
893	static void atfork_child (void)
894	{
895	aio_req prv;
896
897	started = 0;
898
899	while (reqs)
900	{
901	prv = reqs;
902	reqs = prv->next;
903	req_free (prv);
904	}
905
906	reqs = reqe = 0;
907
908	while (ress)
909	{
910	prv = ress;
911	ress = prv->next;
912	req_free (prv);
913	}
914
915	ress = rese = 0;
916
917	close (respipe [0]);
918	close (respipe [1]);
919	create_pipe ();
920
921	atfork_parent ();
922	}	551	}
923		552
924	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
925	aio_req req; \	555	aio_req req; \
		556	int req_pri = next_pri; \
		557	next_pri = EIO_PRI_DEFAULT; \
926	\	558	\
927	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
928	croak ("callback must be undef or of reference type"); \
929	\	560	\
930	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
931	if (!req) \	562	if (!req) \
932	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
933	\	564	\
934	req->callback = newSVsv (callback)	565	req->callback = SvREFCNT_inc (cb_cv); \
		566	req->pri = req_pri
935		567
936	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
937	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
938	\	572	\
939	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
940	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
941		575
942	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
943		577
944	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
945		579
946	BOOT:	580	BOOT:
947	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
948	HV *stash = gv_stashpv ("IO::AIO", 1);	624	stash = gv_stashpv ("IO::AIO", 1);
949	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
950	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
951	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
952		625
		626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		628
953	create_pipe ();	629	create_respipe ();
954	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955	}
956		630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
		636	}
		637
957	void	638	void
958	min_parallel (nthreads)	639	max_poll_reqs (int nreqs)
959	int nthreads
960	PROTOTYPE: $	640	PROTOTYPE: $
		641	CODE:
		642	eio_set_max_poll_reqs (nreqs);
961		643
962	void	644	void
963	max_parallel (nthreads)	645	max_poll_time (double nseconds)
964	int nthreads
965	PROTOTYPE: $	646	PROTOTYPE: $
966
967	int
968	max_outstanding (nreqs)
969	int nreqs
970	PROTOTYPE: $
971	CODE:	647	CODE:
972	RETVAL = max_outstanding;	648	eio_set_max_poll_time (nseconds);
		649
		650	void
		651	min_parallel (int nthreads)
		652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
		655
		656	void
		657	max_parallel (int nthreads)
		658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
		661
		662	void
		663	max_idle (int nthreads)
		664	PROTOTYPE: $
		665	CODE:
		666	eio_set_max_idle (nthreads);
		667
		668	void
		669	max_outstanding (int maxreqs)
		670	PROTOTYPE: $
		671	CODE:
973	max_outstanding = nreqs;	672	max_outstanding = maxreqs;
974		673
975	void	674	void
976	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	675	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
977	SV * pathname
978	int flags
979	int mode
980	SV * callback
981	PROTOTYPE: $$$;$	676	PROTOTYPE: $$$;$
982	PPCODE:	677	PPCODE:
983	{	678	{
984	dREQ;	679	dREQ;
985		680
986	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
987	req->data = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
988	req->dataptr = SvPVbyte_nolen (req->data);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
989	req->fd = flags;	684	req->int1 = flags;
990	req->mode = mode;	685	req->int2 = mode;
991		686
992	REQ_SEND;	687	REQ_SEND;
993	}	688	}
994		689
995	void	690	void
996	aio_close (fh,callback=&PL_sv_undef)	691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
997	SV * fh
998	SV * callback
999	PROTOTYPE: $;$	692	PROTOTYPE: $;$
1000	ALIAS:	693	ALIAS:
1001	aio_close = REQ_CLOSE
1002	aio_fsync = REQ_FSYNC	694	aio_fsync = EIO_FSYNC
1003	aio_fdatasync = REQ_FDATASYNC	695	aio_fdatasync = EIO_FDATASYNC
1004	PPCODE:	696	PPCODE:
1005	{	697	{
		698	int fd = s_fileno_croak (fh, 0);
1006	dREQ;	699	dREQ;
1007		700
1008	req->type = ix;	701	req->type = ix;
1009	req->fh = newSVsv (fh);	702	req->sv1 = newSVsv (fh);
1010	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	703	req->int1 = fd;
1011		704
1012	REQ_SEND (req);	705	REQ_SEND (req);
1013	}	706	}
1014		707
1015	void	708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
1016	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1017	SV * fh
1018	UV offset
1019	UV length
1020	SV * data
1021	UV dataoffset
1022	SV * callback
1023	ALIAS:	757	ALIAS:
1024	aio_read = REQ_READ	758	aio_read = EIO_READ
1025	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1026	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1027	PPCODE:	761	PPCODE:
1028	{	762	{
1029	aio_req req;
1030	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1031	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1032		766	UV len = SvUV (length);
1033	SvUPGRADE (data, SVt_PV);
1034	SvPOK_on (data);
1035		767
1036	if (dataoffset < 0)	768	if (dataoffset < 0)
1037	dataoffset += svlen;	769	dataoffset += svlen;
1038		770
1039	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1040	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1041		773
1042	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1043	{	775	{
1044	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1045	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1046	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1047	}	779	}
1048	else	780	else
1049	{	781	{
1050	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1051	svptr = SvGROW (data, length + dataoffset);	784	svptr = SvGROW (data, len + dataoffset + 1);
1052	}	785	}
1053
1054	if (length < 0)
1055	croak ("length must not be negative");
1056		786
1057	{	787	{
1058	dREQ;	788	dREQ;
1059		789
1060	req->type = ix;	790	req->type = ix;
1061	req->fh = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1062	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1063	: IoOFP (sv_2io (fh)));	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1064	req->offset = offset;	794	req->size = len;
1065	req->length = length;
1066	req->data = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1067	req->dataptr = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
		797	req->stroffset = dataoffset;
1068		798
1069	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1070	{	800	{
1071	SvREADONLY_on (data);	801	SvREADONLY_on (data);
1072	req->data2ptr = (void *)data;	802	req->flags |= FLAG_SV2_RO_OFF;
1073	}	803	}
1074		804
1075	REQ_SEND;	805	REQ_SEND;
1076	}	806	}
1077	}	807	}
1078		808
1079	void	809	void
		810	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		811	PROTOTYPE: $$;$
		812	PPCODE:
		813	{
		814	SV *data;
		815	dREQ;
		816
		817	req->type = EIO_READLINK;
		818	req->sv1 = newSVsv (path);
		819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
1080	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	825	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1081	SV * out_fh
1082	SV * in_fh
1083	UV in_offset
1084	UV length
1085	SV * callback
1086	PROTOTYPE: $$$$;$	826	PROTOTYPE: $$$$;$
1087	PPCODE:	827	PPCODE:
1088	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1089	dREQ;	831	dREQ;
1090		832
1091	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1092	req->fh = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1093	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1094	req->fh2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1095	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1096	req->offset = in_offset;	838	req->offs = in_offset;
1097	req->length = length;	839	req->size = length;
1098		840
1099	REQ_SEND;	841	REQ_SEND;
1100	}	842	}
1101		843
1102	void	844	void
1103	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1104	SV * fh
1105	UV offset
1106	IV length
1107	SV * callback
1108	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1109	PPCODE:	847	PPCODE:
1110	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1111	dREQ;	850	dREQ;
1112		851
1113	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1114	req->fh = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1116	req->offset = offset;	855	req->offs = offset;
1117	req->length = length;	856	req->size = length;
1118		857
1119	REQ_SEND;	858	REQ_SEND;
1120	}	859	}
1121		860
1122	void	861	void
1123	aio_stat (fh_or_path,callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1124	SV * fh_or_path
1125	SV * callback
1126	ALIAS:	863	ALIAS:
1127	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1128	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1129	PPCODE:	866	PPCODE:
1130	{	867	{
1131	dREQ;	868	dREQ;
1132		869
1133	New (0, req->statdata, 1, Stat_t);	870	req->sv1 = newSVsv (fh_or_path);
1134	if (!req->statdata)
1135	{
1136	req_free (req);
1137	croak ("out of memory during aio_req->statdata allocation");
1138	}
1139		871
1140	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1141	{	873	{
1142	req->type = ix;	874	req->type = ix;
1143	req->data = newSVsv (fh_or_path);
1144	req->dataptr = SvPVbyte_nolen (req->data);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1145	}	876	}
1146	else	877	else
1147	{	878	{
1148	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1149	req->fh = newSVsv (fh_or_path);
1150	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1151	}	881	}
1152		882
1153	REQ_SEND;	883	REQ_SEND;
1154	}	884	}
1155		885
1156	void	886	void
		887	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		894	req->sv1 = newSVsv (fh_or_path);
		895
		896	if (SvPOK (req->sv1))
		897	{
		898	req->type = EIO_UTIME;
		899	req->ptr1 = SvPVbyte_nolen (req->sv1);
		900	}
		901	else
		902	{
		903	req->type = EIO_FUTIME;
		904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		905	}
		906
		907	REQ_SEND;
		908	}
		909
		910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
		934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
		938	PPCODE:
		939	{
		940	dREQ;
		941
		942	req->int2 = mode;
		943	req->sv1 = newSVsv (fh_or_path);
		944
		945	if (SvPOK (req->sv1))
		946	{
		947	req->type = ix;
		948	req->ptr1 = SvPVbyte_nolen (req->sv1);
		949	}
		950	else
		951	{
		952	req->type = EIO_FCHMOD;
		953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		954	}
		955
		956	REQ_SEND;
		957	}
		958
		959	void
		960	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		967	req->sv1 = newSVsv (fh_or_path);
		968
		969	if (SvPOK (req->sv1))
		970	{
		971	req->type = EIO_CHOWN;
		972	req->ptr1 = SvPVbyte_nolen (req->sv1);
		973	}
		974	else
		975	{
		976	req->type = EIO_FCHOWN;
		977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		978	}
		979
		980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
		998	}
		999
		1000	void
1157	aio_unlink (pathname,callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1158	SV * pathname
1159	SV * callback
1160	ALIAS:	1002	ALIAS:
1161	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1162	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1163	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1164	PPCODE:	1006	PPCODE:
1165	{	1007	{
1166	dREQ;	1008	dREQ;
1167		1009
1168	req->type = ix;	1010	req->type = ix;
1169	req->data = newSVsv (pathname);	1011	req->sv1 = newSVsv (pathname);
1170	req->dataptr = SvPVbyte_nolen (req->data);	1012	req->ptr1 = SvPVbyte_nolen (req->sv1);
1171		1013
1172	REQ_SEND;	1014	REQ_SEND;
1173	}	1015	}
1174		1016
1175	void	1017	void
1176	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1177	SV * oldpath
1178	SV * newpath
1179	SV * callback
1180	ALIAS:	1019	ALIAS:
1181	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1182	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1183	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1184	PPCODE:	1023	PPCODE:
1185	{	1024	{
1186	dREQ;	1025	dREQ;
1187		1026
1188	req->type = ix;	1027	req->type = ix;
1189	req->fh = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
1190	req->data2ptr = SvPVbyte_nolen (req->fh);	1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
1191	req->data = newSVsv (newpath);	1030	req->sv2 = newSVsv (newpath);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1193		1032
1194	REQ_SEND;	1033	REQ_SEND;
1195	}	1034	}
1196		1035
1197	void	1036	void
1198	aio_sleep (delay,callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1199	double delay
1200	SV * callback
1201	PPCODE:	1038	PPCODE:
1202	{	1039	{
1203	dREQ;	1040	dREQ;
1204		1041
1205	req->type = REQ_SLEEP;	1042	req->type = EIO_MKNOD;
1206	req->fd = delay < 0. ? 0 : delay;	1043	req->sv1 = newSVsv (pathname);
1207	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1208		1045	req->int2 = (mode_t)mode;
		1046	req->offs = dev;
		1047
1209	REQ_SEND;	1048	REQ_SEND;
1210	}	1049	}
1211		1050
1212	void	1051	void
		1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1053	PPCODE:
		1054	{
		1055	dREQ;
		1056
		1057	req->type = EIO_BUSY;
		1058	req->nv1 = delay < 0. ? 0. : delay;
		1059
		1060	REQ_SEND;
		1061	}
		1062
		1063	void
1213	aio_group (callback=&PL_sv_undef)	1064	aio_group (SV *callback=&PL_sv_undef)
1214	SV * callback
1215	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1216	PPCODE:	1066	PPCODE:
1217	{	1067	{
1218	dREQ;	1068	dREQ;
		1069
1219	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
		1071
1220	req_send (req);	1072	req_submit (req);
1221	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1222	}	1074	}
1223		1075
1224	void	1076	void
1225	aio_nop (callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
1226	SV * callback	1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1227	PPCODE:	1081	PPCODE:
1228	{	1082	{
1229	dREQ;	1083	dREQ;
1230		1084
1231	req->type = REQ_NOP;	1085	req->type = ix;
1232		1086
1233	REQ_SEND;	1087	REQ_SEND;
1234	}	1088	}
		1089
		1090	int
		1091	aioreq_pri (int pri = 0)
		1092	PROTOTYPE: ;$
		1093	CODE:
		1094	RETVAL = next_pri;
		1095	if (items > 0)
		1096	{
		1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1099	next_pri = pri;
		1100	}
		1101	OUTPUT:
		1102	RETVAL
		1103
		1104	void
		1105	aioreq_nice (int nice = 0)
		1106	CODE:
		1107	nice = next_pri - nice;
		1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1110	next_pri = nice;
1235		1111
1236	void	1112	void
1237	flush ()	1113	flush ()
1238	PROTOTYPE:	1114	PROTOTYPE:
1239	CODE:	1115	CODE:
1240	while (nreqs)	1116	while (eio_nreqs ())
1241	{	1117	{
1242	poll_wait ();	1118	poll_wait ();
1243	poll_cb ();	1119	poll_cb ();
1244	}	1120	}
1245		1121
1246	void	1122	int
1247	poll()	1123	poll()
1248	PROTOTYPE:	1124	PROTOTYPE:
1249	CODE:	1125	CODE:
1250	if (nreqs)
1251	{
1252	poll_wait ();	1126	poll_wait ();
1253	poll_cb ();	1127	RETVAL = poll_cb ();
1254	}	1128	OUTPUT:
		1129	RETVAL
1255		1130
1256	int	1131	int
1257	poll_fileno()	1132	poll_fileno()
1258	PROTOTYPE:	1133	PROTOTYPE:
1259	CODE:	1134	CODE:
…		…
1271		1146
1272	void	1147	void
1273	poll_wait()	1148	poll_wait()
1274	PROTOTYPE:	1149	PROTOTYPE:
1275	CODE:	1150	CODE:
1276	if (nreqs)
1277	poll_wait ();	1151	poll_wait ();
1278		1152
1279	int	1153	int
1280	nreqs()	1154	nreqs()
1281	PROTOTYPE:	1155	PROTOTYPE:
1282	CODE:	1156	CODE:
1283	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1284	OUTPUT:	1158	OUTPUT:
1285	RETVAL	1159	RETVAL
1286		1160
		1161	int
		1162	nready()
		1163	PROTOTYPE:
		1164	CODE:
		1165	RETVAL = eio_nready ();
		1166	OUTPUT:
		1167	RETVAL
		1168
		1169	int
		1170	npending()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_npending ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	nthreads()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_nthreads ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1287	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1288		1209
1289	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290		1211
1291	void	1212	void
1292	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1293	PROTOTYPE:
1294	CODE:	1214	CODE:
1295	req_cancel (req);	1215	eio_cancel (req);
1296		1216
1297	void	1217	void
1298	cb (aio_req req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1299	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1300	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1301	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1302		1232
1303	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1304		1234
1305	void	1235	void
1306	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1307	PPCODE:	1237	PPCODE:
1308	{	1238	{
1309	int i;	1239	int i;
1310	aio_req req;
1311		1240
1312	if (grp->fd == 2)	1241	if (grp->int1 == 2)
1313	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1314		1243
1315	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1316	{	1245	{
		1246	aio_req req;
		1247
1317	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1318	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1319		1250
1320	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1321		1252
1322	if (req)	1253	if (req)
1323	{	1254	eio_grp_add (grp, req);
1324	++grp->length;
1325	req->grp = grp;
1326
1327	req->grp_prev = 0;
1328	req->grp_next = grp->grp_first;
1329
1330	if (grp->grp_first)
1331	grp->grp_first->grp_prev = req;
1332
1333	grp->grp_first = req;
1334	}	1255	}
1335	}
1336	}	1256	}
		1257
		1258	void
		1259	cancel_subs (aio_req_ornot req)
		1260	CODE:
		1261	req_cancel_subs (req);
1337		1262
1338	void	1263	void
1339	result (aio_req grp, ...)	1264	result (aio_req grp, ...)
1340	CODE:	1265	CODE:
1341	{	1266	{
1342	int i;	1267	int i;
		1268	AV *av;
		1269
		1270	grp->errorno = errno;
		1271
1343	AV *av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1344		1274
1345	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1346	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1347		1277
1348	SvREFCNT_dec (grp->data);	1278	SvREFCNT_dec (grp->sv1);
1349	grp->data = (SV *)av;	1279	grp->sv1 = (SV *)av;
1350	}	1280	}
1351		1281
1352	void	1282	void
		1283	errno (aio_req grp, int errorno = errno)
		1284	CODE:
		1285	grp->errorno = errorno;
		1286
		1287	void
1353	feed_limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1354	CODE:	1289	CODE:
1355	grp->fd2 = limit;	1290	eio_grp_limit (grp, limit);
1356	aio_grp_feed (grp);
1357		1291
1358	void	1292	void
1359	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1360	CODE:	1294	CODE:
1361	{	1295	{
1362	SvREFCNT_dec (grp->fh2);	1296	SvREFCNT_dec (grp->sv2);
1363	grp->fh2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1364		1299
1365	if (grp->fd2 <= 0)	1300	if (grp->int2 <= 0)
1366	grp->fd2 = 2;	1301	grp->int2 = 2;
1367		1302
1368	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1369	}	1304	}
1370		1305

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