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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 1.150 by root, Wed Jul 1 08:11:24 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
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	12	#include <sys/types.h>
17	#include <sys/stat.h>	13	#include <sys/stat.h>
18	#include <limits.h>	14	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	15	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	16	#include <sched.h>
23		17
24	#if HAVE_SENDFILE	18	/* perl namespace pollution */
25	# if __linux	19	#undef VERSION
26	# include <sys/sendfile.h>	20
27	# elif __freebsd	21	#ifdef _WIN32
28	# include <sys/socket.h>	22
29	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	24	# undef malloc
31	# include <sys/socket.h>	25	# undef free
32	# elif __solaris /* not yet */	26
33	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
34	# else	59	#else
35	# error sendfile support requested but not available	60
36	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
37	#endif	68	#endif
38		69
39	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
41	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
42	#endif	87	#endif
43		88
44	#if __ia64	89	/*****************************************************************************/
45	# define STACKSIZE 65536	90
		91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	93	#else
47	# define STACKSIZE 8192	94	# define expect(expr,value) (expr)
48	#endif	95	#endif
49		96
50	enum {	97	#define expect_false(expr) expect ((expr) != 0, 0)
51	REQ_QUIT,	98	#define expect_true(expr) expect ((expr) != 0, 1)
52	REQ_OPEN, REQ_CLOSE,	99
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	100	/*****************************************************************************/
54	REQ_SENDFILE,	101
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	102	static HV *stash;
56	REQ_FSYNC, REQ_FDATASYNC,	103	typedef SV SV8; /* byte-sv, used for argument-checking */
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	104	typedef int aio_rfd; /* read file desriptor */
58	REQ_READDIR,	105	typedef int aio_wfd; /* write file descriptor */
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};
63		106
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		109
67	typedef struct aio_cb	110	#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;	111	SV *callback; \
76	SV *fh, *fh2;	112	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;	113	STRLEN stroffset; \
87	mode_t mode; /* open */	114	SV *self;
88	unsigned char pri;	115
89	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
90	} aio_cb;	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)
91		149
92	enum {	150	enum {
93	FLAG_CANCELLED = 0x01,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	};	152	};
95		153
		154	#include "libeio/eio.c"
		155
96	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
98		158
99	static int started, wanted;	159	static SV *on_next_submit;
100	static volatile int nreqs;	160	static int next_pri = EIO_PRI_DEFAULT;
101	static int max_outstanding = 1<<30;	161	static int max_outstanding;
102	static int respipe [2];
103		162
104	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	163	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		164
108	static volatile aio_req reqs, reqe; /* queue start, queue end */	165	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);	166	static void req_cancel (aio_req req);
112	static void req_free (aio_req req);	167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	char buf [4];
		178	while (respipe_read (respipe [0], buf, 4) == 4)
		179	;
		180	}
113		181
114	/* must be called at most once */	182	/* must be called at most once */
115	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
116	{	184	{
117	if (!req->self)	185	if (!req->self)
…		…
135	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
136	}	204	}
137		205
138	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
139	{	207	{
140	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
141	{	209	{
142	int old_len = grp->length;	210	dSP;
143		211
144	if (grp->fh2 && SvOK (grp->fh2))	212	ENTER;
		213	SAVETMPS;
		214	PUSHMARK (SP);
		215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		216	PUTBACK;
		217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		218	SPAGAIN;
		219	FREETMPS;
		220	LEAVE;
		221	}
		222	}
		223
		224	static void req_submit (eio_req *req)
		225	{
		226	eio_submit (req);
		227
		228	if (expect_false (on_next_submit))
		229	{
		230	dSP;
		231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
		238	}
		239	}
		240
		241	static int req_invoke (eio_req *req)
		242	{
		243	dSP;
		244
		245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
		249	{
		250	ENTER;
		251	SAVETMPS;
		252	PUSHMARK (SP);
		253	EXTEND (SP, 1);
		254
		255	switch (req->type)
145	{	256	{
146	dSP;	257	case EIO_READDIR:
		258	{
		259	SV *rv = &PL_sv_undef;
147		260
148	ENTER;	261	if (req->result >= 0)
149	SAVETMPS;	262	{
150	PUSHMARK (SP);	263	int i;
151	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	264	char *names = (char *)req->ptr2;
152	PUTBACK;	265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
153	call_sv (grp->fh2, G_VOID | G_EVAL);	266	AV *av = newAV ();
154	SPAGAIN;	267
155	FREETMPS;	268	av_extend (av, req->result - 1);
156	LEAVE;	269
		270	for (i = 0; i < req->result; ++i)
		271	{
		272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
		296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
		304	names += SvCUR (name) + 1;
		305	}
		306	}
		307
		308	rv = sv_2mortal (newRV_noinc ((SV *)av));
		309	}
		310
		311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		315	}
		316	break;
		317
		318	case EIO_OPEN:
		319	{
		320	/* convert fd to fh */
		321	SV *fh = &PL_sv_undef;
		322
		323	if (req->result >= 0)
		324	{
		325	GV *gv = (GV *)sv_newmortal ();
		326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
		332
		333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
		345	PUSHs (fh);
		346	}
		347	break;
		348
		349	case EIO_GROUP:
		350	req->int1 = 2; /* mark group as finished */
		351
		352	if (req->sv1)
		353	{
		354	int i;
		355	AV *av = (AV *)req->sv1;
		356
		357	EXTEND (SP, AvFILL (av) + 1);
		358	for (i = 0; i <= AvFILL (av); ++i)
		359	PUSHs (*av_fetch (av, i, 0));
		360	}
		361	break;
		362
		363	case EIO_NOP:
		364	case EIO_BUSY:
		365	break;
		366
		367	case EIO_READLINK:
		368	if (req->result > 0)
		369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		370	break;
		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
		381	case EIO_READ:
		382	{
		383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
		395
		396	default:
		397	PUSHs (sv_2mortal (newSViv (req->result)));
		398	break;
157	}	399	}
158		400
159	/* stop if no progress has been made */	401	errno = req->errorno;
160	if (old_len == grp->length)	402
161	{	403	PUTBACK;
162	SvREFCNT_dec (grp->fh2);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
163	grp->fh2 = 0;	405	SPAGAIN;
164	break;	406
165	}	407	FREETMPS;
		408	LEAVE;
		409
		410	PUTBACK;
166	}	411	}
167	}
168		412
169	static void aio_grp_dec (aio_req grp)	413	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	}	414	}
183		415
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)	416	static void req_destroy (aio_req req)
296	{	417	{
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)	418	if (req->self)
312	{	419	{
313	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
314	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
315	}	422	}
316		423
317	SvREFCNT_dec (req->data);
318	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
319	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
320	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
321	Safefree (req->statdata);
322
323	if (req->type == REQ_READDIR && req->result >= 0)
324	free (req->data2ptr);
325		427
326	Safefree (req);	428	Safefree (req);
327	}	429	}
328		430
329	static void req_cancel (aio_req req)	431	static void req_cancel_subs (aio_req grp)
330	{	432	{
331	req->flags |= FLAG_CANCELLED;	433	aio_req sub;
332		434
333	if (req->type == REQ_GROUP)	435	if (grp->type != EIO_GROUP)
		436	return;
		437
		438	SvREFCNT_dec (grp->sv2);
		439	grp->sv2 = 0;
		440
		441	eio_grp_cancel (grp);
		442	}
		443
		444	#ifdef USE_SOCKETS_AS_HANDLES
		445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		446	#else
		447	# define TO_SOCKET(x) (x)
		448	#endif
		449
		450	static void
		451	create_respipe (void)
		452	{
		453	int old_readfd = respipe [0];
		454
		455	if (respipe [1] >= 0)
		456	respipe_close (TO_SOCKET (respipe [1]));
		457
		458	#ifdef _WIN32
		459	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		460	#else
		461	if (pipe (respipe))
		462	#endif
		463	croak ("unable to initialize result pipe");
		464
		465	if (old_readfd >= 0)
334	{	466	{
335	aio_req sub;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		468	croak ("unable to initialize result pipe(2)");
336		469
337	for (sub = req->grp_first; sub; sub = sub->grp_next)	470	respipe_close (respipe [0]);
338	req_cancel (sub);	471	respipe [0] = old_readfd;
339	}	472	}
340	}
341		473
		474	#ifdef _WIN32
		475	int arg = 1;
		476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		478	#else
		479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		481	#endif
		482	croak ("unable to initialize result pipe(3)");
		483
		484	respipe_osf [0] = TO_SOCKET (respipe [0]);
		485	respipe_osf [1] = TO_SOCKET (respipe [1]);
		486	}
		487
		488	static void poll_wait (void)
		489	{
		490	fd_set rfd;
		491
		492	while (eio_nreqs ())
		493	{
		494	int size;
		495
		496	X_LOCK (reslock);
		497	size = res_queue.size;
		498	X_UNLOCK (reslock);
		499
		500	if (size)
		501	return;
		502
		503	etp_maybe_start_thread ();
		504
		505	FD_ZERO (&rfd);
		506	FD_SET (respipe [0], &rfd);
		507
		508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		509	}
		510	}
		511
342	static int poll_cb ()	512	static int poll_cb (void)
343	{	513	{
344	dSP;
345	int count = 0;
346	int do_croak = 0;
347	aio_req req;
348
349	for (;;)	514	for (;;)
350	{	515	{
351	pthread_mutex_lock (&reslock);	516	int res = eio_poll ();
352	req = ress;
353		517
354	if (req)	518	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;	519	croak (0);
373		520
374	--nreqs;	521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
375		523
376	if (req->type == REQ_QUIT)	524	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	}	525	}
405
406	return count;
407	}	526	}
408		527
409	static void *aio_proc(void *arg);
410
411	static void start_thread (void)	528	static void atfork_child (void)
412	{	529	{
413	sigset_t fullsigset, oldsigset;	530	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	}	531	}
429		532
430	static void req_send (aio_req req)	533	static SV *
		534	get_cb (SV *cb_sv)
431	{	535	{
432	while (started < wanted && nreqs >= started)	536	HV *st;
433	start_thread ();	537	GV *gvp;
		538	CV *cv;
434		539
435	++nreqs;	540	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;	541	return 0;
617		542
618	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
619	# if __linux
620	res = sendfile (ofd, ifd, &offset, count);
621		544
622	# elif __freebsd	545	if (!cv)
623	/*	546	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		547
631	if (res < 0 && sbytes)	548	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	}	549	}
923		550
924	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
925	aio_req req; \	553	aio_req req; \
		554	int req_pri = next_pri; \
		555	next_pri = EIO_PRI_DEFAULT; \
926	\	556	\
927	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
928	croak ("callback must be undef or of reference type"); \
929	\	558	\
930	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
931	if (!req) \	560	if (!req) \
932	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
933	\	562	\
934	req->callback = newSVsv (callback)	563	req->callback = SvREFCNT_inc (cb_cv); \
		564	req->pri = req_pri
935		565
936	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
937	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
938	\	570	\
939	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
940	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
941		573
		574	static int
		575	extract_fd (SV *fh, int wr)
		576	{
		577	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		578
		579	if (fd < 0)
		580	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		581
		582	return fd;
		583	}
		584
942	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
943		586
944	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
945		588
946	BOOT:	589	BOOT:
947	{	590	{
		591	static const struct {
		592	const char *name;
		593	IV iv;
		594	} *civ, const_iv[] = {
		595	# define const_iv(name, value) { # name, (IV) value },
		596	# define const_eio(name) { # name, (IV) EIO_ ## name },
		597	const_iv (EXDEV , EXDEV)
		598	const_iv (ENOSYS , ENOSYS)
		599	const_iv (O_RDONLY, O_RDONLY)
		600	const_iv (O_WRONLY, O_WRONLY)
		601	const_iv (O_CREAT , O_CREAT)
		602	const_iv (O_TRUNC , O_TRUNC)
		603	#ifndef _WIN32
		604	const_iv (S_IFIFO , S_IFIFO)
		605	#endif
		606	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		607	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		608	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		609	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		610	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		611	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		612
		613	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		614	const_eio (SYNC_FILE_RANGE_WRITE)
		615	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		616
		617	const_eio (READDIR_DENTS)
		618	const_eio (READDIR_DIRS_FIRST)
		619	const_eio (READDIR_STAT_ORDER)
		620	const_eio (READDIR_FOUND_UNKNOWN)
		621
		622	const_eio (DT_UNKNOWN)
		623	const_eio (DT_FIFO)
		624	const_eio (DT_CHR)
		625	const_eio (DT_DIR)
		626	const_eio (DT_BLK)
		627	const_eio (DT_REG)
		628	const_eio (DT_LNK)
		629	const_eio (DT_SOCK)
		630	const_eio (DT_WHT)
		631	};
		632
948	HV *stash = gv_stashpv ("IO::AIO", 1);	633	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		634
		635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		637
953	create_pipe ();	638	create_respipe ();
954	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955	}
956		639
		640	if (eio_init (want_poll, done_poll) < 0)
		641	croak ("IO::AIO: unable to initialise eio library");
		642
		643	/* atfork child called in fifo order, so before eio's handler */
		644	X_THREAD_ATFORK (0, 0, atfork_child);
		645	}
		646
957	void	647	void
958	min_parallel (nthreads)	648	max_poll_reqs (int nreqs)
959	int nthreads
960	PROTOTYPE: $	649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
961		652
962	void	653	void
963	max_parallel (nthreads)	654	max_poll_time (double nseconds)
964	int nthreads
965	PROTOTYPE: $	655	PROTOTYPE: $
966
967	int
968	max_outstanding (nreqs)
969	int nreqs
970	PROTOTYPE: $
971	CODE:	656	CODE:
972	RETVAL = max_outstanding;	657	eio_set_max_poll_time (nseconds);
		658
		659	void
		660	min_parallel (int nthreads)
		661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
		664
		665	void
		666	max_parallel (int nthreads)
		667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
		670
		671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
		678	max_outstanding (int maxreqs)
		679	PROTOTYPE: $
		680	CODE:
973	max_outstanding = nreqs;	681	max_outstanding = maxreqs;
974		682
975	void	683	void
976	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	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: $$$;$	685	PROTOTYPE: $$$;$
982	PPCODE:	686	PPCODE:
983	{	687	{
984	dREQ;	688	dREQ;
985		689
986	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
987	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
988	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
989	req->fd = flags;	693	req->int1 = flags;
990	req->mode = mode;	694	req->int2 = mode;
991		695
992	REQ_SEND;	696	REQ_SEND;
993	}	697	}
994		698
995	void	699	void
996	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
997	SV * fh
998	SV * callback
999	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1000	ALIAS:	702	ALIAS:
1001	aio_close = REQ_CLOSE
1002	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1003	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1004	PPCODE:	705	PPCODE:
1005	{	706	{
		707	int fd = extract_fd (fh, 0);
1006	dREQ;	708	dREQ;
1007		709
1008	req->type = ix;	710	req->type = ix;
1009	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1010	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1011		713
1012	REQ_SEND (req);	714	REQ_SEND (req);
1013	}	715	}
1014		716
1015	void	717	void
		718	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		719	PROTOTYPE: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1016	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1017	SV * fh
1018	UV offset
1019	UV length
1020	SV * data
1021	UV dataoffset
1022	SV * callback
1023	ALIAS:	766	ALIAS:
1024	aio_read = REQ_READ	767	aio_read = EIO_READ
1025	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1026	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1027	PPCODE:	770	PPCODE:
1028	{	771	{
1029	aio_req req;
1030	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1031	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1032		775	UV len = SvUV (length);
1033	SvUPGRADE (data, SVt_PV);
1034	SvPOK_on (data);
1035		776
1036	if (dataoffset < 0)	777	if (dataoffset < 0)
1037	dataoffset += svlen;	778	dataoffset += svlen;
1038		779
1039	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1040	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1041		782
1042	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1043	{	784	{
1044	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1045	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1046	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1047	}	788	}
1048	else	789	else
1049	{	790	{
1050	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1051	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1052	}	794	}
1053
1054	if (length < 0)
1055	croak ("length must not be negative");
1056		795
1057	{	796	{
1058	dREQ;	797	dREQ;
1059		798
1060	req->type = ix;	799	req->type = ix;
1061	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1062	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1063	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1064	req->offset = offset;	803	req->size = len;
1065	req->length = length;
1066	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1067	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1068		807
1069	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1070	{	809	{
1071	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1072	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1073	}	812	}
1074		813
1075	REQ_SEND;	814	REQ_SEND;
1076	}	815	}
1077	}	816	}
1078		817
1079	void	818	void
		819	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		820	PROTOTYPE: $$;$
		821	PPCODE:
		822	{
		823	SV *data;
		824	dREQ;
		825
		826	req->type = EIO_READLINK;
		827	req->sv1 = newSVsv (path);
		828	req->ptr1 = SvPVbyte_nolen (req->sv1);
		829
		830	REQ_SEND;
		831	}
		832
		833	void
1080	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	834	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: $$$$;$	835	PROTOTYPE: $$$$;$
1087	PPCODE:	836	PPCODE:
1088	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1089	dREQ;	840	dREQ;
1090		841
1091	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1092	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1093	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1094	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1095	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1096	req->offset = in_offset;	847	req->offs = in_offset;
1097	req->length = length;	848	req->size = length;
1098		849
1099	REQ_SEND;	850	REQ_SEND;
1100	}	851	}
1101		852
1102	void	853	void
1103	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1104	SV * fh
1105	UV offset
1106	IV length
1107	SV * callback
1108	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1109	PPCODE:	856	PPCODE:
1110	{	857	{
		858	int fd = extract_fd (fh, 0);
1111	dREQ;	859	dREQ;
1112		860
1113	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1114	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1116	req->offset = offset;	864	req->offs = offset;
1117	req->length = length;	865	req->size = length;
1118		866
1119	REQ_SEND;	867	REQ_SEND;
1120	}	868	}
1121		869
1122	void	870	void
1123	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1124	SV * fh_or_path
1125	SV * callback
1126	ALIAS:	872	ALIAS:
1127	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1128	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1129	PPCODE:	875	PPCODE:
1130	{	876	{
1131	dREQ;	877	dREQ;
1132		878
1133	New (0, req->statdata, 1, Stat_t);	879	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		880
1140	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1141	{	882	{
1142	req->type = ix;	883	req->type = ix;
1143	req->data = newSVsv (fh_or_path);
1144	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1145	}	885	}
1146	else	886	else
1147	{	887	{
1148	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1149	req->fh = newSVsv (fh_or_path);
1150	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1151	}	890	}
1152		891
1153	REQ_SEND;	892	REQ_SEND;
1154	}	893	}
1155		894
1156	void	895	void
		896	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	dREQ;
		900
		901	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		902	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		903	req->sv1 = newSVsv (fh_or_path);
		904
		905	if (SvPOK (req->sv1))
		906	{
		907	req->type = EIO_UTIME;
		908	req->ptr1 = SvPVbyte_nolen (req->sv1);
		909	}
		910	else
		911	{
		912	req->type = EIO_FUTIME;
		913	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		914	}
		915
		916	REQ_SEND;
		917	}
		918
		919	void
		920	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		921	PPCODE:
		922	{
		923	dREQ;
		924
		925	req->sv1 = newSVsv (fh_or_path);
		926	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		927
		928	if (SvPOK (req->sv1))
		929	{
		930	req->type = EIO_TRUNCATE;
		931	req->ptr1 = SvPVbyte_nolen (req->sv1);
		932	}
		933	else
		934	{
		935	req->type = EIO_FTRUNCATE;
		936	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		937	}
		938
		939	REQ_SEND;
		940	}
		941
		942	void
		943	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		944	ALIAS:
		945	aio_chmod = EIO_CHMOD
		946	aio_mkdir = EIO_MKDIR
		947	PPCODE:
		948	{
		949	dREQ;
		950
		951	req->int2 = mode;
		952	req->sv1 = newSVsv (fh_or_path);
		953
		954	if (SvPOK (req->sv1))
		955	{
		956	req->type = ix;
		957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958	}
		959	else
		960	{
		961	req->type = EIO_FCHMOD;
		962	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		963	}
		964
		965	REQ_SEND;
		966	}
		967
		968	void
		969	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		970	PPCODE:
		971	{
		972	dREQ;
		973
		974	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		975	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		976	req->sv1 = newSVsv (fh_or_path);
		977
		978	if (SvPOK (req->sv1))
		979	{
		980	req->type = EIO_CHOWN;
		981	req->ptr1 = SvPVbyte_nolen (req->sv1);
		982	}
		983	else
		984	{
		985	req->type = EIO_FCHOWN;
		986	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		987	}
		988
		989	REQ_SEND;
		990	}
		991
		992	void
		993	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = EIO_READDIR;
		999	req->sv1 = newSVsv (pathname);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1002
		1003	if (flags & EIO_READDIR_DENTS)
		1004	req->int1 |= EIO_READDIR_CUSTOM2;
		1005
		1006	REQ_SEND;
		1007	}
		1008
		1009	void
1157	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1158	SV * pathname
1159	SV * callback
1160	ALIAS:	1011	ALIAS:
1161	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1162	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1163	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1164	PPCODE:	1015	PPCODE:
1165	{	1016	{
1166	dREQ;	1017	dREQ;
1167		1018
1168	req->type = ix;	1019	req->type = ix;
1169	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1170	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1171		1022
1172	REQ_SEND;	1023	REQ_SEND;
1173	}	1024	}
1174		1025
1175	void	1026	void
1176	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1177	SV * oldpath
1178	SV * newpath
1179	SV * callback
1180	ALIAS:	1028	ALIAS:
1181	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1182	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1183	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1184	PPCODE:	1032	PPCODE:
1185	{	1033	{
1186	dREQ;	1034	dREQ;
1187		1035
1188	req->type = ix;	1036	req->type = ix;
1189	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1190	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1191	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1192	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1193		1041
1194	REQ_SEND;	1042	REQ_SEND;
1195	}	1043	}
1196		1044
1197	void	1045	void
1198	aio_sleep (delay,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1199	double delay
1200	SV * callback
1201	PPCODE:	1047	PPCODE:
1202	{	1048	{
1203	dREQ;	1049	dREQ;
1204		1050
1205	req->type = REQ_SLEEP;	1051	req->type = EIO_MKNOD;
1206	req->fd = delay < 0. ? 0 : delay;	1052	req->sv1 = newSVsv (pathname);
1207	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1208		1054	req->int2 = (mode_t)mode;
		1055	req->offs = dev;
		1056
1209	REQ_SEND;	1057	REQ_SEND;
1210	}	1058	}
1211		1059
1212	void	1060	void
		1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->type = EIO_BUSY;
		1067	req->nv1 = delay < 0. ? 0. : delay;
		1068
		1069	REQ_SEND;
		1070	}
		1071
		1072	void
1213	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1214	SV * callback
1215	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1216	PPCODE:	1075	PPCODE:
1217	{	1076	{
1218	dREQ;	1077	dREQ;
		1078
1219	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1220	req_send (req);	1081	req_submit (req);
1221	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1222	}	1083	}
1223		1084
1224	void	1085	void
1225	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1226	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1227	PPCODE:	1090	PPCODE:
1228	{	1091	{
1229	dREQ;	1092	dREQ;
1230		1093
1231	req->type = REQ_NOP;	1094	req->type = ix;
1232		1095
1233	REQ_SEND;	1096	REQ_SEND;
1234	}	1097	}
		1098
		1099	int
		1100	aioreq_pri (int pri = 0)
		1101	PROTOTYPE: ;$
		1102	CODE:
		1103	RETVAL = next_pri;
		1104	if (items > 0)
		1105	{
		1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1108	next_pri = pri;
		1109	}
		1110	OUTPUT:
		1111	RETVAL
		1112
		1113	void
		1114	aioreq_nice (int nice = 0)
		1115	CODE:
		1116	nice = next_pri - nice;
		1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1119	next_pri = nice;
1235		1120
1236	void	1121	void
1237	flush ()	1122	flush ()
1238	PROTOTYPE:	1123	PROTOTYPE:
1239	CODE:	1124	CODE:
1240	while (nreqs)	1125	while (eio_nreqs ())
1241	{	1126	{
1242	poll_wait ();	1127	poll_wait ();
1243	poll_cb ();	1128	poll_cb ();
1244	}	1129	}
1245		1130
1246	void	1131	int
1247	poll()	1132	poll()
1248	PROTOTYPE:	1133	PROTOTYPE:
1249	CODE:	1134	CODE:
1250	if (nreqs)
1251	{
1252	poll_wait ();	1135	poll_wait ();
1253	poll_cb ();	1136	RETVAL = poll_cb ();
1254	}	1137	OUTPUT:
		1138	RETVAL
1255		1139
1256	int	1140	int
1257	poll_fileno()	1141	poll_fileno()
1258	PROTOTYPE:	1142	PROTOTYPE:
1259	CODE:	1143	CODE:
…		…
1271		1155
1272	void	1156	void
1273	poll_wait()	1157	poll_wait()
1274	PROTOTYPE:	1158	PROTOTYPE:
1275	CODE:	1159	CODE:
1276	if (nreqs)
1277	poll_wait ();	1160	poll_wait ();
1278		1161
1279	int	1162	int
1280	nreqs()	1163	nreqs()
1281	PROTOTYPE:	1164	PROTOTYPE:
1282	CODE:	1165	CODE:
1283	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1284	OUTPUT:	1167	OUTPUT:
1285	RETVAL	1168	RETVAL
1286		1169
		1170	int
		1171	nready()
		1172	PROTOTYPE:
		1173	CODE:
		1174	RETVAL = eio_nready ();
		1175	OUTPUT:
		1176	RETVAL
		1177
		1178	int
		1179	npending()
		1180	PROTOTYPE:
		1181	CODE:
		1182	RETVAL = eio_npending ();
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	int
		1187	nthreads()
		1188	PROTOTYPE:
		1189	CODE:
		1190	RETVAL = eio_nthreads ();
		1191	OUTPUT:
		1192	RETVAL
		1193
		1194	int
		1195	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1196	PROTOTYPE: $$$$
		1197	CODE:
		1198	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	OUTPUT:
		1204	RETVAL
		1205
		1206	ssize_t
		1207	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1208	PROTOTYPE: $$$$
		1209	CODE:
		1210	eio_sendfile_sync (ofh, ifh, offset, count);
		1211
		1212	void _on_next_submit (SV *cb)
		1213	CODE:
		1214	SvREFCNT_dec (on_next_submit);
		1215	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1216
1287	PROTOTYPES: DISABLE	1217	PROTOTYPES: DISABLE
1288		1218
1289	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290		1220
1291	void	1221	void
1292	cancel (aio_req_ornot req)	1222	cancel (aio_req_ornot req)
1293	PROTOTYPE:
1294	CODE:	1223	CODE:
1295	req_cancel (req);	1224	eio_cancel (req);
1296		1225
1297	void	1226	void
1298	cb (aio_req req, SV *callback=&PL_sv_undef)	1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1299	CODE:	1228	PPCODE:
		1229	{
		1230	if (GIMME_V != G_VOID)
		1231	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1232
		1233	if (items > 1)
		1234	{
		1235	SV *cb_cv = get_cb (callback);
		1236
1300	SvREFCNT_dec (req->callback);	1237	SvREFCNT_dec (req->callback);
1301	req->callback = newSVsv (callback);	1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
1302		1241
1303	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1304		1243
1305	void	1244	void
1306	add (aio_req grp, ...)	1245	add (aio_req grp, ...)
1307	PPCODE:	1246	PPCODE:
1308	{	1247	{
1309	int i;	1248	int i;
1310	aio_req req;
1311		1249
1312	if (grp->fd == 2)	1250	if (grp->int1 == 2)
1313	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1251	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1314		1252
1315	for (i = 1; i < items; ++i )	1253	for (i = 1; i < items; ++i )
1316	{	1254	{
		1255	aio_req req;
		1256
1317	if (GIMME_V != G_VOID)	1257	if (GIMME_V != G_VOID)
1318	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1319		1259
1320	req = SvAIO_REQ (ST (i));	1260	req = SvAIO_REQ (ST (i));
1321		1261
1322	if (req)	1262	if (req)
1323	{	1263	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	}	1264	}
1335	}
1336	}	1265	}
		1266
		1267	void
		1268	cancel_subs (aio_req_ornot req)
		1269	CODE:
		1270	req_cancel_subs (req);
1337		1271
1338	void	1272	void
1339	result (aio_req grp, ...)	1273	result (aio_req grp, ...)
1340	CODE:	1274	CODE:
1341	{	1275	{
1342	int i;	1276	int i;
		1277	AV *av;
		1278
		1279	grp->errorno = errno;
		1280
1343	AV *av = newAV ();	1281	av = newAV ();
		1282	av_extend (av, items - 1);
1344		1283
1345	for (i = 1; i < items; ++i )	1284	for (i = 1; i < items; ++i )
1346	av_push (av, newSVsv (ST (i)));	1285	av_push (av, newSVsv (ST (i)));
1347		1286
1348	SvREFCNT_dec (grp->data);	1287	SvREFCNT_dec (grp->sv1);
1349	grp->data = (SV *)av;	1288	grp->sv1 = (SV *)av;
1350	}	1289	}
1351		1290
1352	void	1291	void
		1292	errno (aio_req grp, int errorno = errno)
		1293	CODE:
		1294	grp->errorno = errorno;
		1295
		1296	void
1353	feed_limit (aio_req grp, int limit)	1297	limit (aio_req grp, int limit)
1354	CODE:	1298	CODE:
1355	grp->fd2 = limit;	1299	eio_grp_limit (grp, limit);
1356	aio_grp_feed (grp);
1357		1300
1358	void	1301	void
1359	feed (aio_req grp, SV *callback=&PL_sv_undef)	1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
1360	CODE:	1303	CODE:
1361	{	1304	{
1362	SvREFCNT_dec (grp->fh2);	1305	SvREFCNT_dec (grp->sv2);
1363	grp->fh2 = newSVsv (callback);	1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
1364		1308
1365	if (grp->fd2 <= 0)	1309	if (grp->int2 <= 0)
1366	grp->fd2 = 2;	1310	grp->int2 = 2;
1367		1311
1368	aio_grp_feed (grp);	1312	eio_grp_limit (grp, grp->int2);
1369	}	1313	}
1370		1314

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