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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.150 by root, Wed Jul 1 08:11:24 2009 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"
14
15	#include <pthread.h>
16
17	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
18	#include <errno.h>	11	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	12	#include <sys/types.h>
22	#include <sys/stat.h>	13	#include <sys/stat.h>
23	#include <limits.h>	14	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	15	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	16	#include <sched.h>
28		17
29	#if HAVE_SENDFILE	18	/* perl namespace pollution */
30	# if __linux	19	#undef VERSION
31	# include <sys/sendfile.h>	20
32	# elif __freebsd	21	#ifdef _WIN32
33	# include <sys/socket.h>	22
34	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
35	# elif __hpux	24	# undef malloc
36	# include <sys/socket.h>	25	# undef free
37	# elif __solaris /* not yet */	26
38	# 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
39	# else	59	#else
40	# error sendfile support requested but not available	60
41	# 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
42	#endif	68	#endif
43		69
44	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
45	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
46	# 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
47	#endif	87	#endif
48		88
49	#if __ia64	89	/*****************************************************************************/
50	# define STACKSIZE 65536	90
		91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
51	#else	93	#else
52	# define STACKSIZE 8192	94	# define expect(expr,value) (expr)
53	#endif	95	#endif
54		96
55	enum {	97	#define expect_false(expr) expect ((expr) != 0, 0)
56	REQ_QUIT,	98	#define expect_true(expr) expect ((expr) != 0, 1)
57	REQ_OPEN, REQ_CLOSE,	99
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	100	/*****************************************************************************/
59	REQ_SENDFILE,	101
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	102	static HV *stash;
61	REQ_FSYNC, REQ_FDATASYNC,	103	typedef SV SV8; /* byte-sv, used for argument-checking */
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	104	typedef int aio_rfd; /* read file desriptor */
63	REQ_READDIR,	105	typedef int aio_wfd; /* write file descriptor */
64	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,
67	};
68		106
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		109
72	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;	111	SV *callback; \
77	SV *fh, *fh2;	112	SV *sv1, *sv2; \
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;	113	STRLEN stroffset; \
85	int type;	114	SV *self;
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89		115
90	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
91	unsigned char pri;
92		117
93	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
95	} aio_cb;	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)
96		149
97	enum {	150	enum {
98	FLAG_CANCELLED = 0x01,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
99	};	152	};
100		153
		154	#include "libeio/eio.c"
		155
101	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
103		158
104	enum {	159	static SV *on_next_submit;
105	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	161	static int max_outstanding;
117	static int respipe [2];
118		162
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		164
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	165	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	166	static void req_cancel (aio_req req);
133	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	}
134		181
135	/* must be called at most once */	182	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
137	{	184	{
138	if (!req->self)	185	if (!req->self)
…		…
156	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	204	}
158		205
159	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
160	{	207	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
162	{	209	{
163	int old_len = grp->length;	210	dSP;
164		211
165	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)
166	{	256	{
167	dSP;	257	case EIO_READDIR:
		258	{
		259	SV *rv = &PL_sv_undef;
168		260
169	ENTER;	261	if (req->result >= 0)
170	SAVETMPS;	262	{
171	PUSHMARK (SP);	263	int i;
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	264	char *names = (char *)req->ptr2;
173	PUTBACK;	265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
174	call_sv (grp->fh2, G_VOID | G_EVAL);	266	AV *av = newAV ();
175	SPAGAIN;	267
176	FREETMPS;	268	av_extend (av, req->result - 1);
177	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;
178	}	399	}
179		400
180	/* stop if no progress has been made */	401	errno = req->errorno;
181	if (old_len == grp->length)	402
182	{	403	PUTBACK;
183	SvREFCNT_dec (grp->fh2);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
184	grp->fh2 = 0;	405	SPAGAIN;
185	break;	406
186	}	407	FREETMPS;
		408	LEAVE;
		409
		410	PUTBACK;
187	}	411	}
188	}
189		412
190	static void aio_grp_dec (aio_req grp)	413	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	414	}
204		415
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	pthread_mutex_lock (&reslock);
213	req = ress;
214	pthread_mutex_unlock (&reslock);
215
216	if (req)
217	return;
218
219	FD_ZERO(&rfd);
220	FD_SET(respipe [0], &rfd);
221
222	select (respipe [0] + 1, &rfd, 0, 0, 0);
223	}
224	}
225
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
326	{	417	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	418	if (req->self)
342	{	419	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
345	}	422	}
346		423
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
350	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352
353	if (req->type == REQ_READDIR && req->result >= 0)
354	free (req->data2ptr);
355		427
356	Safefree (req);	428	Safefree (req);
357	}	429	}
358		430
359	static void req_cancel (aio_req req)	431	static void req_cancel_subs (aio_req grp)
360	{	432	{
361	req->flags |= FLAG_CANCELLED;	433	aio_req sub;
362		434
363	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)
364	{	466	{
365	aio_req sub;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		468	croak ("unable to initialize result pipe(2)");
366		469
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	470	respipe_close (respipe [0]);
368	req_cancel (sub);	471	respipe [0] = old_readfd;
369	}	472	}
370	}
371		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
372	static int poll_cb ()	512	static int poll_cb (void)
373	{	513	{
374	dSP;
375	int count = 0;
376	int do_croak = 0;
377	aio_req req;
378
379	for (;;)	514	for (;;)
380	{	515	{
381	pthread_mutex_lock (&reslock);	516	int res = eio_poll ();
382	req = ress;
383		517
384	if (req)	518	if (res > 0)
385	{
386	ress = req->next;
387
388	if (!ress)
389	{
390	/* read any signals sent by the worker threads */
391	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}
397	}
398
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;	519	croak (0);
403		520
404	--nreqs;	521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
405		523
406	if (req->type == REQ_QUIT)	524	poll_wait ();
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	525	}
435
436	return count;
437	}	526	}
438		527
439	static void *aio_proc(void *arg);
440
441	static void start_thread (void)	528	static void atfork_child (void)
442	{	529	{
443	sigset_t fullsigset, oldsigset;	530	create_respipe ();
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}	531	}
459		532
460	static void req_send (aio_req req)	533	static SV *
		534	get_cb (SV *cb_sv)
461	{	535	{
462	while (started < wanted && nreqs >= started)	536	HV *st;
463	start_thread ();	537	GV *gvp;
		538	CV *cv;
464		539
465	++nreqs;	540	if (!SvOK (cb_sv))
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{
473	reqe->next = req;
474	reqe = req;
475	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}
528
529	static void create_pipe ()
530	{
531	if (pipe (respipe))
532	croak ("unable to initialize result pipe");
533
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
535	croak ("cannot set result pipe to nonblocking mode");
536
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
538	croak ("cannot set result pipe to nonblocking mode");
539	}
540
541	/*****************************************************************************/
542	/* work around various missing functions */
543
544	#if !HAVE_PREADWRITE
545	# define pread aio_pread
546	# define pwrite aio_pwrite
547
548	/*
549	* make our pread/pwrite safe against themselves, but not against
550	* normal read/write by using a mutex. slows down execution a lot,
551	* but that's your problem, not mine.
552	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
554
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{
557	ssize_t res;
558	off_t ooffset;
559
560	pthread_mutex_lock (&preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);
566
567	return res;
568	}
569
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
571	{
572	ssize_t res;
573	off_t ooffset;
574
575	pthread_mutex_lock (&preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);
581
582	return res;
583	}
584	#endif
585
586	#if !HAVE_FDATASYNC
587	# define fdatasync fsync
588	#endif
589
590	#if !HAVE_READAHEAD
591	# define readahead aio_readahead
592
593	static ssize_t readahead (int fd, off_t offset, size_t count)
594	{
595	char readahead_buf[4096];
596
597	while (count > 0)
598	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
600
601	pread (fd, readahead_buf, len, offset);
602	offset += len;
603	count -= len;
604	}
605
606	errno = 0;
607	}
608	#endif
609
610	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r
612
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
614
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{
617	struct dirent *e;
618	int errorno;
619
620	pthread_mutex_lock (&readdirlock);
621
622	e = readdir (dirp);
623	errorno = errno;
624
625	if (e)
626	{
627	*res = ent;
628	strcpy (ent->d_name, e->d_name);
629	}
630	else
631	*res = 0;
632
633	pthread_mutex_unlock (&readdirlock);
634
635	errno = errorno;
636	return e ? 0 : -1;
637	}
638	#endif
639
640	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
642	{
643	ssize_t res;
644
645	if (!count)
646	return 0;	541	return 0;
647		542
648	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
649	# if __linux
650	res = sendfile (ofd, ifd, &offset, count);
651		544
652	# elif __freebsd	545	if (!cv)
653	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
654	* Of course, the freebsd sendfile is a dire hack with no thoughts
655	* wasted on making it similar to other I/O functions.
656	*/
657	{
658	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		547
661	if (res < 0 && sbytes)	548	return (SV *)cv;
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
663	res = sbytes;
664	}
665
666	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);
668
669	# elif __solaris
670	{
671	struct sendfilevec vec;
672	size_t sbytes;
673
674	vec.sfv_fd = ifd;
675	vec.sfv_flag = 0;
676	vec.sfv_off = offset;
677	vec.sfv_len = count;
678
679	res = sendfilev (ofd, &vec, 1, &sbytes);
680
681	if (res < 0 && sbytes)
682	res = sbytes;
683	}
684
685	# endif
686	#else
687	res = -1;
688	errno = ENOSYS;
689	#endif
690
691	if (res < 0
692	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
693	#if __solaris
694	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
695	#endif
696	)
697	)
698	{
699	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];
701	res = 0;
702
703	while (count)
704	{
705	ssize_t cnt;
706
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
708
709	if (cnt <= 0)
710	{
711	if (cnt && !res) res = -1;
712	break;
713	}
714
715	cnt = write (ofd, buf, cnt);
716
717	if (cnt <= 0)
718	{
719	if (cnt && !res) res = -1;
720	break;
721	}
722
723	offset += cnt;
724	res += cnt;
725	count -= cnt;
726	}
727	}
728
729	return res;
730	}
731
732	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)
734	{
735	DIR *dirp = opendir (path);
736	union
737	{
738	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;
741	struct dirent *entp;
742	char *name, *names;
743	int memlen = 4096;
744	int memofs = 0;
745	int res = 0;
746	int errorno;
747
748	if (!dirp)
749	return -1;
750
751	names = malloc (memlen);
752
753	for (;;)
754	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);
756
757	if (!entp)
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805
806	for (;;)
807	{
808	req = reqs;
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815
816	if (req)
817	break;
818
819	pthread_cond_wait (&reqwait, &reqlock);
820	}
821
822	pthread_mutex_unlock (&reqlock);
823
824	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826
827	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)
829	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
832
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
835
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
839
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
847
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
851
852	case REQ_SLEEP:
853	{
854	struct timeval tv;
855
856	tv.tv_sec = req->fd;
857	tv.tv_usec = req->fd2;
858
859	req->result = select (0, 0, 0, 0, &tv);
860	}
861
862	case REQ_GROUP:
863	case REQ_NOP:
864	case REQ_QUIT:
865	break;
866
867	default:
868	req->result = ENOSYS;
869	break;
870	}
871
872	req->errorno = errno;
873
874	pthread_mutex_lock (&reslock);
875
876	req->next = 0;
877
878	if (rese)
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);
889	}
890
891	pthread_mutex_unlock (&reslock);
892	}
893	while (type != REQ_QUIT);
894
895	return 0;
896	}
897
898	/*****************************************************************************/
899
900	static void atfork_prepare (void)
901	{
902	pthread_mutex_lock (&reqlock);
903	pthread_mutex_lock (&reslock);
904	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);
906	#endif
907	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);
909	#endif
910	}
911
912	static void atfork_parent (void)
913	{
914	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);
916	#endif
917	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);
919	#endif
920	pthread_mutex_unlock (&reslock);
921	pthread_mutex_unlock (&reqlock);
922	}
923
924	static void atfork_child (void)
925	{
926	aio_req prv;
927
928	started = 0;
929
930	while (reqs)
931	{
932	prv = reqs;
933	reqs = prv->next;
934	req_free (prv);
935	}
936
937	reqs = reqe = 0;
938
939	while (ress)
940	{
941	prv = ress;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();
951
952	atfork_parent ();
953	}	549	}
954		550
955	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
956	aio_req req; \	553	aio_req req; \
957	int req_pri = next_pri; \	554	int req_pri = next_pri; \
958	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
959	\	556	\
960	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
961	croak ("callback must be undef or of reference type"); \
962	\	558	\
963	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
964	if (!req) \	560	if (!req) \
965	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
966	\	562	\
967	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
968	req->pri = req_pri	564	req->pri = req_pri
969		565
970	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
971	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
972	\	570	\
973	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
974	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
975		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
976	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
977		586
978	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
979		588
980	BOOT:	589	BOOT:
981	{	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
982	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
986		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
987	create_pipe ();	638	create_respipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}
990		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
991	void	647	void
992	min_parallel (nthreads)	648	max_poll_reqs (int nreqs)
993	int nthreads
994	PROTOTYPE: $	649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
995		652
996	void	653	void
997	max_parallel (nthreads)	654	max_poll_time (double nseconds)
998	int nthreads
999	PROTOTYPE: $	655	PROTOTYPE: $
1000
1001	int
1002	max_outstanding (nreqs)
1003	int nreqs
1004	PROTOTYPE: $
1005	CODE:	656	CODE:
1006	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:
1007	max_outstanding = nreqs;	681	max_outstanding = maxreqs;
1008		682
1009	void	683	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1016	PPCODE:	686	PPCODE:
1017	{	687	{
1018	dREQ;	688	dREQ;
1019		689
1020	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1021	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1022	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1023	req->fd = flags;	693	req->int1 = flags;
1024	req->mode = mode;	694	req->int2 = mode;
1025		695
1026	REQ_SEND;	696	REQ_SEND;
1027	}	697	}
1028		698
1029	void	699	void
1030	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1034	ALIAS:	702	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1038	PPCODE:	705	PPCODE:
1039	{	706	{
		707	int fd = extract_fd (fh, 0);
1040	dREQ;	708	dREQ;
1041		709
1042	req->type = ix;	710	req->type = ix;
1043	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1045		713
1046	REQ_SEND (req);	714	REQ_SEND (req);
1047	}	715	}
1048		716
1049	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: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:	766	ALIAS:
1058	aio_read = REQ_READ	767	aio_read = EIO_READ
1059	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1060	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1061	PPCODE:	770	PPCODE:
1062	{	771	{
1063	aio_req req;
1064	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1065	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1066		775	UV len = SvUV (length);
1067	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);
1069		776
1070	if (dataoffset < 0)	777	if (dataoffset < 0)
1071	dataoffset += svlen;	778	dataoffset += svlen;
1072		779
1073	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1075		782
1076	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1077	{	784	{
1078	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1081	}	788	}
1082	else	789	else
1083	{	790	{
1084	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1085	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	794	}
1087
1088	if (length < 0)
1089	croak ("length must not be negative");
1090		795
1091	{	796	{
1092	dREQ;	797	dREQ;
1093		798
1094	req->type = ix;	799	req->type = ix;
1095	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1097	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	803	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1102		807
1103	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1104	{	809	{
1105	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1107	}	812	}
1108		813
1109	REQ_SEND;	814	REQ_SEND;
1110	}	815	}
1111	}	816	}
1112		817
1113	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
1114	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)
1115	SV * out_fh
1116	SV * in_fh
1117	UV in_offset
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1121	PPCODE:	836	PPCODE:
1122	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1123	dREQ;	840	dREQ;
1124		841
1125	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1126	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1128	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1130	req->offset = in_offset;	847	req->offs = in_offset;
1131	req->length = length;	848	req->size = length;
1132		849
1133	REQ_SEND;	850	REQ_SEND;
1134	}	851	}
1135		852
1136	void	853	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1143	PPCODE:	856	PPCODE:
1144	{	857	{
		858	int fd = extract_fd (fh, 0);
1145	dREQ;	859	dREQ;
1146		860
1147	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1148	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1150	req->offset = offset;	864	req->offs = offset;
1151	req->length = length;	865	req->size = length;
1152		866
1153	REQ_SEND;	867	REQ_SEND;
1154	}	868	}
1155		869
1156	void	870	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	872	ALIAS:
1161	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1162	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1163	PPCODE:	875	PPCODE:
1164	{	876	{
1165	dREQ;	877	dREQ;
1166		878
1167	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1168	if (!req->statdata)
1169	{
1170	req_free (req);
1171	croak ("out of memory during aio_req->statdata allocation");
1172	}
1173		880
1174	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1175	{	882	{
1176	req->type = ix;	883	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1179	}	885	}
1180	else	886	else
1181	{	887	{
1182	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1183	req->fh = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1185	}	890	}
1186		891
1187	REQ_SEND;	892	REQ_SEND;
1188	}	893	}
1189		894
1190	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
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	1011	ALIAS:
1195	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1196	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1197	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1198	PPCODE:	1015	PPCODE:
1199	{	1016	{
1200	dREQ;	1017	dREQ;
1201		1018
1202	req->type = ix;	1019	req->type = ix;
1203	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205		1022
1206	REQ_SEND;	1023	REQ_SEND;
1207	}	1024	}
1208		1025
1209	void	1026	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:	1028	ALIAS:
1215	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1216	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1217	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1218	PPCODE:	1032	PPCODE:
1219	{	1033	{
1220	dREQ;	1034	dREQ;
1221		1035
1222	req->type = ix;	1036	req->type = ix;
1223	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1225	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1226	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1227		1041
1228	REQ_SEND;	1042	REQ_SEND;
1229	}	1043	}
1230		1044
1231	void	1045	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1047	PPCODE:
1236	{	1048	{
1237	dREQ;	1049	dREQ;
1238		1050
1239	req->type = REQ_SLEEP;	1051	req->type = EIO_MKNOD;
1240	req->fd = delay < 0. ? 0 : delay;	1052	req->sv1 = newSVsv (pathname);
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1242		1054	req->int2 = (mode_t)mode;
		1055	req->offs = dev;
		1056
1243	REQ_SEND;	1057	REQ_SEND;
1244	}	1058	}
1245		1059
1246	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
1247	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1250	PPCODE:	1075	PPCODE:
1251	{	1076	{
1252	dREQ;	1077	dREQ;
1253		1078
1254	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1255	req_send (req);	1081	req_submit (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1258	}	1083	}
1259		1084
1260	void	1085	void
1261	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1263	PPCODE:	1090	PPCODE:
1264	{	1091	{
1265	dREQ;	1092	dREQ;
1266		1093
1267	req->type = REQ_NOP;	1094	req->type = ix;
1268		1095
1269	REQ_SEND;	1096	REQ_SEND;
1270	}	1097	}
1271		1098
1272	#if 0	1099	int
1273		1100	aioreq_pri (int pri = 0)
1274	void	1101	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1102	CODE:
		1103	RETVAL = next_pri;
		1104	if (items > 0)
		1105	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
		1109	}
		1110	OUTPUT:
		1111	RETVAL
1280		1112
1281	#endif	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;
1282		1120
1283	void	1121	void
1284	flush ()	1122	flush ()
1285	PROTOTYPE:	1123	PROTOTYPE:
1286	CODE:	1124	CODE:
1287	while (nreqs)	1125	while (eio_nreqs ())
1288	{	1126	{
1289	poll_wait ();	1127	poll_wait ();
1290	poll_cb ();	1128	poll_cb ();
1291	}	1129	}
1292		1130
1293	void	1131	int
1294	poll()	1132	poll()
1295	PROTOTYPE:	1133	PROTOTYPE:
1296	CODE:	1134	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();	1135	poll_wait ();
1300	poll_cb ();	1136	RETVAL = poll_cb ();
1301	}	1137	OUTPUT:
		1138	RETVAL
1302		1139
1303	int	1140	int
1304	poll_fileno()	1141	poll_fileno()
1305	PROTOTYPE:	1142	PROTOTYPE:
1306	CODE:	1143	CODE:
…		…
1318		1155
1319	void	1156	void
1320	poll_wait()	1157	poll_wait()
1321	PROTOTYPE:	1158	PROTOTYPE:
1322	CODE:	1159	CODE:
1323	if (nreqs)
1324	poll_wait ();	1160	poll_wait ();
1325		1161
1326	int	1162	int
1327	nreqs()	1163	nreqs()
1328	PROTOTYPE:	1164	PROTOTYPE:
1329	CODE:	1165	CODE:
1330	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1331	OUTPUT:	1167	OUTPUT:
1332	RETVAL	1168	RETVAL
1333		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
1334	PROTOTYPES: DISABLE	1217	PROTOTYPES: DISABLE
1335		1218
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1220
1338	void	1221	void
1339	cancel (aio_req_ornot req)	1222	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1223	CODE:
1342	req_cancel (req);	1224	eio_cancel (req);
1343		1225
1344	void	1226	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1346	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
1347	SvREFCNT_dec (req->callback);	1237	SvREFCNT_dec (req->callback);
1348	req->callback = newSVsv (callback);	1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
1349		1241
1350	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1351		1243
1352	void	1244	void
1353	add (aio_req grp, ...)	1245	add (aio_req grp, ...)
1354	PPCODE:	1246	PPCODE:
1355	{	1247	{
1356	int i;	1248	int i;
1357	aio_req req;
1358		1249
1359	if (grp->fd == 2)	1250	if (grp->int1 == 2)
1360	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");
1361		1252
1362	for (i = 1; i < items; ++i )	1253	for (i = 1; i < items; ++i )
1363	{	1254	{
		1255	aio_req req;
		1256
1364	if (GIMME_V != G_VOID)	1257	if (GIMME_V != G_VOID)
1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1366		1259
1367	req = SvAIO_REQ (ST (i));	1260	req = SvAIO_REQ (ST (i));
1368		1261
1369	if (req)	1262	if (req)
1370	{	1263	eio_grp_add (grp, req);
1371	++grp->length;
1372	req->grp = grp;
1373
1374	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;
1376
1377	if (grp->grp_first)
1378	grp->grp_first->grp_prev = req;
1379
1380	grp->grp_first = req;
1381	}	1264	}
1382	}
1383	}	1265	}
		1266
		1267	void
		1268	cancel_subs (aio_req_ornot req)
		1269	CODE:
		1270	req_cancel_subs (req);
1384		1271
1385	void	1272	void
1386	result (aio_req grp, ...)	1273	result (aio_req grp, ...)
1387	CODE:	1274	CODE:
1388	{	1275	{
1389	int i;	1276	int i;
		1277	AV *av;
		1278
		1279	grp->errorno = errno;
		1280
1390	AV *av = newAV ();	1281	av = newAV ();
		1282	av_extend (av, items - 1);
1391		1283
1392	for (i = 1; i < items; ++i )	1284	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1285	av_push (av, newSVsv (ST (i)));
1394		1286
1395	SvREFCNT_dec (grp->data);	1287	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1288	grp->sv1 = (SV *)av;
1397	}	1289	}
1398		1290
1399	void	1291	void
		1292	errno (aio_req grp, int errorno = errno)
		1293	CODE:
		1294	grp->errorno = errorno;
		1295
		1296	void
1400	feed_limit (aio_req grp, int limit)	1297	limit (aio_req grp, int limit)
1401	CODE:	1298	CODE:
1402	grp->fd2 = limit;	1299	eio_grp_limit (grp, limit);
1403	aio_grp_feed (grp);
1404		1300
1405	void	1301	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1303	CODE:
1408	{	1304	{
1409	SvREFCNT_dec (grp->fh2);	1305	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
1411		1308
1412	if (grp->fd2 <= 0)	1309	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1310	grp->int2 = 2;
1414		1311
1415	aio_grp_feed (grp);	1312	eio_grp_limit (grp, grp->int2);
1416	}	1313	}
1417		1314

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