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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 2009 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	/* perl namespace pollution */
25	# if __linux	21	#undef VERSION
26	# include <sys/sendfile.h>	22
27	# elif __freebsd	23	#ifdef _WIN32
28	# include <sys/socket.h>	24
29	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	26	# undef malloc
31	# include <sys/socket.h>	27	# undef free
32	# elif __solaris /* not yet */	28
33	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
34	# else	61	#else
35	# error sendfile support requested but not available	62
36	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
37	#endif	70	#endif
38		71
39	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
40	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
41	# define NAME_MAX 4096	74	#undef readdir
		75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
42	#endif	89	#endif
43		90
44	#if __ia64	91	/*****************************************************************************/
45	# define STACKSIZE 65536	92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	95	#else
47	# define STACKSIZE 8192	96	# define expect(expr,value) (expr)
48	#endif	97	#endif
49		98
50	enum {	99	#define expect_false(expr) expect ((expr) != 0, 0)
51	REQ_QUIT,	100	#define expect_true(expr) expect ((expr) != 0, 1)
52	REQ_OPEN, REQ_CLOSE,	101
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	102	/*****************************************************************************/
54	REQ_SENDFILE,	103
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	104	static HV *stash;
56	REQ_FSYNC, REQ_FDATASYNC,	105	typedef SV SV8; /* byte-sv, used for argument-checking */
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	106	typedef int aio_rfd; /* read file desriptor */
58	REQ_READDIR,	107	typedef int aio_wfd; /* write file descriptor */
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};
63		108
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		111
67	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
68	{
69	struct aio_cb *volatile next;
70
71	SV *data, *callback;	113	SV *callback; \
72	SV *fh, *fh2;	114	SV *sv1, *sv2; \
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;	115	STRLEN stroffset; \
80	int type;	116	SV *self;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84		117
85	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
86	unsigned char pri;
87		119
88	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
90	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
91		151
92	enum {	152	enum {
93	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	};	154	};
95		155
		156	#include "libeio/eio.c"
		157
96	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
98		160
99	enum {	161	static SV *on_next_submit;
100	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = 4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	163	static int max_outstanding;
112	static int respipe [2];
113		164
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		166
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	167	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	168	static void req_cancel (aio_req req);
122	static void req_free (aio_req req);	169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
123		183
124	/* must be called at most once */	184	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
126	{	186	{
127	if (!req->self)	187	if (!req->self)
…		…
145	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	206	}
147		207
148	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
149	{	209	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
151	{	211	{
152	int old_len = grp->length;	212	dSP;
153		213
154	if (grp->fh2 && SvOK (grp->fh2))	214	ENTER;
		215	SAVETMPS;
		216	PUSHMARK (SP);
		217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		218	PUTBACK;
		219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		220	SPAGAIN;
		221	FREETMPS;
		222	LEAVE;
		223	}
		224	}
		225
		226	static void req_submit (eio_req *req)
		227	{
		228	eio_submit (req);
		229
		230	if (expect_false (on_next_submit))
		231	{
		232	dSP;
		233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
		240	}
		241	}
		242
		243	static int req_invoke (eio_req *req)
		244	{
		245	dSP;
		246
		247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
		251	{
		252	ENTER;
		253	SAVETMPS;
		254	PUSHMARK (SP);
		255	EXTEND (SP, 1);
		256
		257	switch (req->type)
155	{	258	{
156	dSP;	259	case EIO_READDIR:
		260	{
		261	SV *rv = &PL_sv_undef;
157		262
158	ENTER;	263	if (req->result >= 0)
159	SAVETMPS;	264	{
160	PUSHMARK (SP);	265	int i;
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	266	char *names = (char *)req->ptr2;
162	PUTBACK;	267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
163	call_sv (grp->fh2, G_VOID | G_EVAL);	268	AV *av = newAV ();
164	SPAGAIN;	269
165	FREETMPS;	270	av_extend (av, req->result - 1);
166	LEAVE;	271
		272	for (i = 0; i < req->result; ++i)
		273	{
		274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
		298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
		306	names += SvCUR (name) + 1;
		307	}
		308	}
		309
		310	rv = sv_2mortal (newRV_noinc ((SV *)av));
		311	}
		312
		313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		317	}
		318	break;
		319
		320	case EIO_OPEN:
		321	{
		322	/* convert fd to fh */
		323	SV *fh = &PL_sv_undef;
		324
		325	if (req->result >= 0)
		326	{
		327	GV *gv = (GV *)sv_newmortal ();
		328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
		334
		335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
		347	PUSHs (fh);
		348	}
		349	break;
		350
		351	case EIO_GROUP:
		352	req->int1 = 2; /* mark group as finished */
		353
		354	if (req->sv1)
		355	{
		356	int i;
		357	AV *av = (AV *)req->sv1;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case EIO_NOP:
		366	case EIO_BUSY:
		367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
		397
		398	default:
		399	PUSHs (sv_2mortal (newSViv (req->result)));
		400	break;
167	}	401	}
168		402
169	/* stop if no progress has been made */	403	errno = req->errorno;
170	if (old_len == grp->length)	404
171	{	405	PUTBACK;
172	SvREFCNT_dec (grp->fh2);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
173	grp->fh2 = 0;	407	SPAGAIN;
174	break;	408
175	}	409	FREETMPS;
		410	LEAVE;
		411
		412	PUTBACK;
176	}	413	}
177	}
178		414
179	static void aio_grp_dec (aio_req grp)	415	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	416	}
193		417
194	static void poll_wait ()
195	{
196	fd_set rfd;
197
198	while (nreqs)
199	{
200	aio_req req;
201	pthread_mutex_lock (&reslock);
202	req = ress;
203	pthread_mutex_unlock (&reslock);
204
205	if (req)
206	return;
207
208	FD_ZERO(&rfd);
209	FD_SET(respipe [0], &rfd);
210
211	select (respipe [0] + 1, &rfd, 0, 0, 0);
212	}
213	}
214
215	static void req_invoke (aio_req req)
216	{
217	dSP;
218	int errorno = errno;
219
220	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221	return;
222
223	errno = req->errorno;
224
225	ENTER;
226	SAVETMPS;
227	PUSHMARK (SP);
228	EXTEND (SP, 1);
229
230	switch (req->type)
231	{
232	case REQ_READDIR:
233	{
234	SV *rv = &PL_sv_undef;
235
236	if (req->result >= 0)
237	{
238	char *buf = req->data2ptr;
239	AV *av = newAV ();
240
241	while (req->result)
242	{
243	SV *sv = newSVpv (buf, 0);
244
245	av_push (av, sv);
246	buf += SvCUR (sv) + 1;
247	req->result--;
248	}
249
250	rv = sv_2mortal (newRV_noinc ((SV *)av));
251	}
252
253	PUSHs (rv);
254	}
255	break;
256
257	case REQ_OPEN:
258	{
259	/* convert fd to fh */
260	SV *fh;
261
262	PUSHs (sv_2mortal (newSViv (req->result)));
263	PUTBACK;
264	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265	SPAGAIN;
266
267	fh = SvREFCNT_inc (POPs);
268
269	PUSHMARK (SP);
270	XPUSHs (sv_2mortal (fh));
271	}
272	break;
273
274	case REQ_GROUP:
275	req->fd = 2; /* mark group as finished */
276
277	if (req->data)
278	{
279	int i;
280	AV *av = (AV *)req->data;
281
282	EXTEND (SP, AvFILL (av) + 1);
283	for (i = 0; i <= AvFILL (av); ++i)
284	PUSHs (*av_fetch (av, i, 0));
285	}
286	break;
287
288	case REQ_NOP:
289	case REQ_SLEEP:
290	break;
291
292	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;
295	}
296
297
298	PUTBACK;
299	call_sv (req->callback, G_VOID | G_EVAL);
300	SPAGAIN;
301
302	FREETMPS;
303	LEAVE;
304
305	errno = errorno;
306
307	if (SvTRUE (ERRSV))
308	{
309	req_free (req);
310	croak (0);
311	}
312	}
313
314	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
315	{	419	{
316	if (req->grp)
317	{
318	aio_req grp = req->grp;
319
320	/* unlink request */
321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
323
324	if (grp->grp_first == req)
325	grp->grp_first = req->grp_next;
326
327	aio_grp_dec (grp);
328	}
329
330	if (req->self)	420	if (req->self)
331	{	421	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
334	}	424	}
335		425
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
339	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341
342	if (req->type == REQ_READDIR && req->result >= 0)
343	free (req->data2ptr);
344		429
345	Safefree (req);	430	Safefree (req);
346	}	431	}
347		432
348	static void req_cancel (aio_req req)	433	static void req_cancel_subs (aio_req grp)
349	{	434	{
350	req->flags |= FLAG_CANCELLED;	435	aio_req sub;
351		436
352	if (req->type == REQ_GROUP)	437	if (grp->type != EIO_GROUP)
		438	return;
		439
		440	SvREFCNT_dec (grp->sv2);
		441	grp->sv2 = 0;
		442
		443	eio_grp_cancel (grp);
		444	}
		445
		446	#ifdef USE_SOCKETS_AS_HANDLES
		447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
		451
		452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
		456
		457	if (respipe [1] >= 0)
		458	respipe_close (TO_SOCKET (respipe [1]));
		459
		460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
353	{	468	{
354	aio_req sub;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		470	croak ("unable to initialize result pipe(2)");
355		471
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	472	respipe_close (respipe [0]);
357	req_cancel (sub);	473	respipe [0] = old_readfd;
358	}	474	}
359	}
360		475
		476	#ifdef _WIN32
		477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
		485
		486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
		489
		490	static void poll_wait (void)
		491	{
		492	fd_set rfd;
		493
		494	while (eio_nreqs ())
		495	{
		496	int size;
		497
		498	X_LOCK (reslock);
		499	size = res_queue.size;
		500	X_UNLOCK (reslock);
		501
		502	if (size)
		503	return;
		504
		505	etp_maybe_start_thread ();
		506
		507	FD_ZERO (&rfd);
		508	FD_SET (respipe [0], &rfd);
		509
		510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		511	}
		512	}
		513
361	static int poll_cb ()	514	static int poll_cb (void)
362	{	515	{
363	dSP;
364	int count = 0;
365	int do_croak = 0;
366	aio_req req;
367
368	for (;;)	516	for (;;)
369	{	517	{
370	pthread_mutex_lock (&reslock);	518	int res = eio_poll ();
371	req = ress;
372		519
373	if (req)	520	if (res > 0)
374	{
375	ress = req->next;
376
377	if (!ress)
378	{
379	/* read any signals sent by the worker threads */
380	char buf [32];
381	while (read (respipe [0], buf, 32) == 32)
382	;
383
384	rese = 0;
385	}
386	}
387
388	pthread_mutex_unlock (&reslock);
389
390	if (!req)
391	break;	521	croak (0);
392		522
393	--nreqs;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
394		525
395	if (req->type == REQ_QUIT)	526	poll_wait ();
396	started--;
397	else if (req->type == REQ_GROUP && req->length)
398	{
399	req->fd = 1; /* mark request as delayed */
400	continue;
401	}
402	else
403	{
404	if (req->type == REQ_READ)
405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408	SvREADONLY_off (req->data);
409
410	if (req->statdata)
411	{
412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413	PL_laststatval = req->result;
414	PL_statcache = *(req->statdata);
415	}
416
417	req_invoke (req);
418
419	count++;
420	}
421
422	req_free (req);
423	}	527	}
424
425	return count;
426	}	528	}
427		529
428	static void *aio_proc(void *arg);
429
430	static void start_thread (void)	530	static void atfork_child (void)
431	{	531	{
432	sigset_t fullsigset, oldsigset;	532	create_respipe ();
433	pthread_t tid;
434	pthread_attr_t attr;
435
436	pthread_attr_init (&attr);
437	pthread_attr_setstacksize (&attr, STACKSIZE);
438	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440	sigfillset (&fullsigset);
441	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444	started++;
445
446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
447	}	533	}
448		534
449	static void req_send (aio_req req)	535	static SV *
		536	get_cb (SV *cb_sv)
450	{	537	{
451	while (started < wanted && nreqs >= started)	538	HV *st;
452	start_thread ();	539	GV *gvp;
		540	CV *cv;
453		541
454	++nreqs;	542	if (!SvOK (cb_sv))
455
456	pthread_mutex_lock (&reqlock);
457
458	req->next = 0;
459
460	if (reqe)
461	{
462	reqe->next = req;
463	reqe = req;
464	}
465	else
466	reqe = reqs = req;
467
468	pthread_cond_signal (&reqwait);
469	pthread_mutex_unlock (&reqlock);
470
471	if (nreqs > max_outstanding)
472	for (;;)
473	{
474	poll_cb ();
475
476	if (nreqs <= max_outstanding)
477	break;
478
479	poll_wait ();
480	}
481	}
482
483	static void end_thread (void)
484	{
485	aio_req req;
486	Newz (0, req, 1, aio_cb);
487	req->type = REQ_QUIT;
488
489	req_send (req);
490	}
491
492	static void min_parallel (int nthreads)
493	{
494	if (wanted < nthreads)
495	wanted = nthreads;
496	}
497
498	static void max_parallel (int nthreads)
499	{
500	int cur = started;
501
502	if (wanted > nthreads)
503	wanted = nthreads;
504
505	while (cur > wanted)
506	{
507	end_thread ();
508	cur--;
509	}
510
511	while (started > wanted)
512	{
513	poll_wait ();
514	poll_cb ();
515	}
516	}
517
518	static void create_pipe ()
519	{
520	if (pipe (respipe))
521	croak ("unable to initialize result pipe");
522
523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
524	croak ("cannot set result pipe to nonblocking mode");
525
526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
527	croak ("cannot set result pipe to nonblocking mode");
528	}
529
530	/*****************************************************************************/
531	/* work around various missing functions */
532
533	#if !HAVE_PREADWRITE
534	# define pread aio_pread
535	# define pwrite aio_pwrite
536
537	/*
538	* make our pread/pwrite safe against themselves, but not against
539	* normal read/write by using a mutex. slows down execution a lot,
540	* but that's your problem, not mine.
541	*/
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
543
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
545	{
546	ssize_t res;
547	off_t ooffset;
548
549	pthread_mutex_lock (&preadwritelock);
550	ooffset = lseek (fd, 0, SEEK_CUR);
551	lseek (fd, offset, SEEK_SET);
552	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);
555
556	return res;
557	}
558
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
560	{
561	ssize_t res;
562	off_t ooffset;
563
564	pthread_mutex_lock (&preadwritelock);
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570
571	return res;
572	}
573	#endif
574
575	#if !HAVE_FDATASYNC
576	# define fdatasync fsync
577	#endif
578
579	#if !HAVE_READAHEAD
580	# define readahead aio_readahead
581
582	static ssize_t readahead (int fd, off_t offset, size_t count)
583	{
584	char readahead_buf[4096];
585
586	while (count > 0)
587	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
589
590	pread (fd, readahead_buf, len, offset);
591	offset += len;
592	count -= len;
593	}
594
595	errno = 0;
596	}
597	#endif
598
599	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r
601
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
603
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
605	{
606	struct dirent *e;
607	int errorno;
608
609	pthread_mutex_lock (&readdirlock);
610
611	e = readdir (dirp);
612	errorno = errno;
613
614	if (e)
615	{
616	*res = ent;
617	strcpy (ent->d_name, e->d_name);
618	}
619	else
620	*res = 0;
621
622	pthread_mutex_unlock (&readdirlock);
623
624	errno = errorno;
625	return e ? 0 : -1;
626	}
627	#endif
628
629	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
631	{
632	ssize_t res;
633
634	if (!count)
635	return 0;	543	return 0;
636		544
637	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
638	# if __linux
639	res = sendfile (ofd, ifd, &offset, count);
640		546
641	# elif __freebsd	547	if (!cv)
642	/*	548	croak ("IO::AIO callback must be undef or a CODE reference");
643	* Of course, the freebsd sendfile is a dire hack with no thoughts
644	* wasted on making it similar to other I/O functions.
645	*/
646	{
647	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649		549
650	if (res < 0 && sbytes)	550	return (SV *)cv;
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
652	res = sbytes;
653	}
654
655	# elif __hpux
656	res = sendfile (ofd, ifd, offset, count, 0, 0);
657
658	# elif __solaris
659	{
660	struct sendfilevec vec;
661	size_t sbytes;
662
663	vec.sfv_fd = ifd;
664	vec.sfv_flag = 0;
665	vec.sfv_off = offset;
666	vec.sfv_len = count;
667
668	res = sendfilev (ofd, &vec, 1, &sbytes);
669
670	if (res < 0 && sbytes)
671	res = sbytes;
672	}
673
674	# endif
675	#else
676	res = -1;
677	errno = ENOSYS;
678	#endif
679
680	if (res < 0
681	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
682	#if __solaris
683	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
684	#endif
685	)
686	)
687	{
688	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];
690	res = 0;
691
692	while (count)
693	{
694	ssize_t cnt;
695
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
697
698	if (cnt <= 0)
699	{
700	if (cnt && !res) res = -1;
701	break;
702	}
703
704	cnt = write (ofd, buf, cnt);
705
706	if (cnt <= 0)
707	{
708	if (cnt && !res) res = -1;
709	break;
710	}
711
712	offset += cnt;
713	res += cnt;
714	count -= cnt;
715	}
716	}
717
718	return res;
719	}
720
721	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)
723	{
724	DIR *dirp = opendir (path);
725	union
726	{
727	struct dirent d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
729	} u;
730	struct dirent *entp;
731	char *name, *names;
732	int memlen = 4096;
733	int memofs = 0;
734	int res = 0;
735	int errorno;
736
737	if (!dirp)
738	return -1;
739
740	names = malloc (memlen);
741
742	for (;;)
743	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);
745
746	if (!entp)
747	break;
748
749	name = entp->d_name;
750
751	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752	{
753	int len = strlen (name) + 1;
754
755	res++;
756
757	while (memofs + len > memlen)
758	{
759	memlen *= 2;
760	names = realloc (names, memlen);
761	if (!names)
762	break;
763	}
764
765	memcpy (names + memofs, name, len);
766	memofs += len;
767	}
768	}
769
770	errorno = errno;
771	closedir (dirp);
772
773	if (errorno)
774	{
775	free (names);
776	errno = errorno;
777	res = -1;
778	}
779
780	*namesp = (void *)names;
781	return res;
782	}
783
784	/*****************************************************************************/
785
786	static void *aio_proc (void *thr_arg)
787	{
788	aio_req req;
789	int type;
790
791	do
792	{
793	pthread_mutex_lock (&reqlock);
794
795	for (;;)
796	{
797	req = reqs;
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804
805	if (req)
806	break;
807
808	pthread_cond_wait (&reqwait, &reqlock);
809	}
810
811	pthread_mutex_unlock (&reqlock);
812
813	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815
816	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)
818	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
821
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
823	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
824
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
826	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
827	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
828
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
836
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
840
841	case REQ_SLEEP:
842	{
843	struct timeval tv;
844
845	tv.tv_sec = req->fd;
846	tv.tv_usec = req->fd2;
847
848	req->result = select (0, 0, 0, 0, &tv);
849	}
850
851	case REQ_GROUP:
852	case REQ_NOP:
853	case REQ_QUIT:
854	break;
855
856	default:
857	req->result = ENOSYS;
858	break;
859	}
860
861	req->errorno = errno;
862
863	pthread_mutex_lock (&reslock);
864
865	req->next = 0;
866
867	if (rese)
868	{
869	rese->next = req;
870	rese = req;
871	}
872	else
873	{
874	rese = ress = req;
875
876	/* write a dummy byte to the pipe so fh becomes ready */
877	write (respipe [1], &respipe, 1);
878	}
879
880	pthread_mutex_unlock (&reslock);
881	}
882	while (type != REQ_QUIT);
883
884	return 0;
885	}
886
887	/*****************************************************************************/
888
889	static void atfork_prepare (void)
890	{
891	pthread_mutex_lock (&reqlock);
892	pthread_mutex_lock (&reslock);
893	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);
895	#endif
896	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);
898	#endif
899	}
900
901	static void atfork_parent (void)
902	{
903	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);
905	#endif
906	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);
908	#endif
909	pthread_mutex_unlock (&reslock);
910	pthread_mutex_unlock (&reqlock);
911	}
912
913	static void atfork_child (void)
914	{
915	aio_req prv;
916
917	started = 0;
918
919	while (reqs)
920	{
921	prv = reqs;
922	reqs = prv->next;
923	req_free (prv);
924	}
925
926	reqs = reqe = 0;
927
928	while (ress)
929	{
930	prv = ress;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936
937	close (respipe [0]);
938	close (respipe [1]);
939	create_pipe ();
940
941	atfork_parent ();
942	}	551	}
943		552
944	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
945	aio_req req; \	555	aio_req req; \
946	int req_pri = next_pri; \	556	int req_pri = next_pri; \
947	next_pri = DEFAULT_PRI + PRI_BIAS; \	557	next_pri = EIO_PRI_DEFAULT; \
948	\	558	\
949	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
950	croak ("callback must be undef or of reference type"); \
951	\	560	\
952	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
953	if (!req) \	562	if (!req) \
954	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
955	\	564	\
956	req->callback = newSVsv (callback); \	565	req->callback = SvREFCNT_inc (cb_cv); \
957	req->pri = req_pri	566	req->pri = req_pri
958		567
959	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
960	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
961	\	572	\
962	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
963	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
964		575
965	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
966		577
967	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
968		579
969	BOOT:	580	BOOT:
970	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
971	HV *stash = gv_stashpv ("IO::AIO", 1);	624	stash = gv_stashpv ("IO::AIO", 1);
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
975		625
		626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		628
976	create_pipe ();	629	create_respipe ();
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
978	}
979		630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
		636	}
		637
980	void	638	void
981	min_parallel (nthreads)	639	max_poll_reqs (int nreqs)
982	int nthreads
983	PROTOTYPE: $	640	PROTOTYPE: $
		641	CODE:
		642	eio_set_max_poll_reqs (nreqs);
984		643
985	void	644	void
986	max_parallel (nthreads)	645	max_poll_time (double nseconds)
987	int nthreads
988	PROTOTYPE: $	646	PROTOTYPE: $
989
990	int
991	max_outstanding (nreqs)
992	int nreqs
993	PROTOTYPE: $
994	CODE:	647	CODE:
995	RETVAL = max_outstanding;	648	eio_set_max_poll_time (nseconds);
		649
		650	void
		651	min_parallel (int nthreads)
		652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
		655
		656	void
		657	max_parallel (int nthreads)
		658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
		661
		662	void
		663	max_idle (int nthreads)
		664	PROTOTYPE: $
		665	CODE:
		666	eio_set_max_idle (nthreads);
		667
		668	void
		669	max_outstanding (int maxreqs)
		670	PROTOTYPE: $
		671	CODE:
996	max_outstanding = nreqs;	672	max_outstanding = maxreqs;
997		673
998	void	674	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	675	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1000	SV * pathname
1001	int flags
1002	int mode
1003	SV * callback
1004	PROTOTYPE: $$$;$	676	PROTOTYPE: $$$;$
1005	PPCODE:	677	PPCODE:
1006	{	678	{
1007	dREQ;	679	dREQ;
1008		680
1009	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
1010	req->data = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
1011	req->dataptr = SvPVbyte_nolen (req->data);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1012	req->fd = flags;	684	req->int1 = flags;
1013	req->mode = mode;	685	req->int2 = mode;
1014		686
1015	REQ_SEND;	687	REQ_SEND;
1016	}	688	}
1017		689
1018	void	690	void
1019	aio_close (fh,callback=&PL_sv_undef)	691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$	692	PROTOTYPE: $;$
1023	ALIAS:	693	ALIAS:
1024	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC	694	aio_fsync = EIO_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC	695	aio_fdatasync = EIO_FDATASYNC
1027	PPCODE:	696	PPCODE:
1028	{	697	{
		698	int fd = s_fileno_croak (fh, 0);
1029	dREQ;	699	dREQ;
1030		700
1031	req->type = ix;	701	req->type = ix;
1032	req->fh = newSVsv (fh);	702	req->sv1 = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	703	req->int1 = fd;
1034		704
1035	REQ_SEND (req);	705	REQ_SEND (req);
1036	}	706	}
1037		707
1038	void	708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1040	SV * fh
1041	UV offset
1042	UV length
1043	SV * data
1044	UV dataoffset
1045	SV * callback
1046	ALIAS:	757	ALIAS:
1047	aio_read = REQ_READ	758	aio_read = EIO_READ
1048	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1049	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1050	PPCODE:	761	PPCODE:
1051	{	762	{
1052	aio_req req;
1053	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1054	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1055		766	UV len = SvUV (length);
1056	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);
1058		767
1059	if (dataoffset < 0)	768	if (dataoffset < 0)
1060	dataoffset += svlen;	769	dataoffset += svlen;
1061		770
1062	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1064		773
1065	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1066	{	775	{
1067	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1070	}	779	}
1071	else	780	else
1072	{	781	{
1073	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1074	svptr = SvGROW (data, length + dataoffset);	784	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	785	}
1076
1077	if (length < 0)
1078	croak ("length must not be negative");
1079		786
1080	{	787	{
1081	dREQ;	788	dREQ;
1082		789
1083	req->type = ix;	790	req->type = ix;
1084	req->fh = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1086	: IoOFP (sv_2io (fh)));	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	794	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
		797	req->stroffset = dataoffset;
1091		798
1092	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1093	{	800	{
1094	SvREADONLY_on (data);	801	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	802	req->flags |= FLAG_SV2_RO_OFF;
1096	}	803	}
1097		804
1098	REQ_SEND;	805	REQ_SEND;
1099	}	806	}
1100	}	807	}
1101		808
1102	void	809	void
		810	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		811	PROTOTYPE: $$;$
		812	PPCODE:
		813	{
		814	SV *data;
		815	dREQ;
		816
		817	req->type = EIO_READLINK;
		818	req->sv1 = newSVsv (path);
		819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	825	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1104	SV * out_fh
1105	SV * in_fh
1106	UV in_offset
1107	UV length
1108	SV * callback
1109	PROTOTYPE: $$$$;$	826	PROTOTYPE: $$$$;$
1110	PPCODE:	827	PPCODE:
1111	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1112	dREQ;	831	dREQ;
1113		832
1114	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1115	req->fh = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1117	req->fh2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1119	req->offset = in_offset;	838	req->offs = in_offset;
1120	req->length = length;	839	req->size = length;
1121		840
1122	REQ_SEND;	841	REQ_SEND;
1123	}	842	}
1124		843
1125	void	844	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1132	PPCODE:	847	PPCODE:
1133	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1134	dREQ;	850	dREQ;
1135		851
1136	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1137	req->fh = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1139	req->offset = offset;	855	req->offs = offset;
1140	req->length = length;	856	req->size = length;
1141		857
1142	REQ_SEND;	858	REQ_SEND;
1143	}	859	}
1144		860
1145	void	861	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	863	ALIAS:
1150	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1151	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1152	PPCODE:	866	PPCODE:
1153	{	867	{
1154	dREQ;	868	dREQ;
1155		869
1156	New (0, req->statdata, 1, Stat_t);	870	req->sv1 = newSVsv (fh_or_path);
1157	if (!req->statdata)
1158	{
1159	req_free (req);
1160	croak ("out of memory during aio_req->statdata allocation");
1161	}
1162		871
1163	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1164	{	873	{
1165	req->type = ix;	874	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1168	}	876	}
1169	else	877	else
1170	{	878	{
1171	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1172	req->fh = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1174	}	881	}
1175		882
1176	REQ_SEND;	883	REQ_SEND;
1177	}	884	}
1178		885
1179	void	886	void
		887	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		894	req->sv1 = newSVsv (fh_or_path);
		895
		896	if (SvPOK (req->sv1))
		897	{
		898	req->type = EIO_UTIME;
		899	req->ptr1 = SvPVbyte_nolen (req->sv1);
		900	}
		901	else
		902	{
		903	req->type = EIO_FUTIME;
		904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		905	}
		906
		907	REQ_SEND;
		908	}
		909
		910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
		934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
		938	PPCODE:
		939	{
		940	dREQ;
		941
		942	req->int2 = mode;
		943	req->sv1 = newSVsv (fh_or_path);
		944
		945	if (SvPOK (req->sv1))
		946	{
		947	req->type = ix;
		948	req->ptr1 = SvPVbyte_nolen (req->sv1);
		949	}
		950	else
		951	{
		952	req->type = EIO_FCHMOD;
		953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		954	}
		955
		956	REQ_SEND;
		957	}
		958
		959	void
		960	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		967	req->sv1 = newSVsv (fh_or_path);
		968
		969	if (SvPOK (req->sv1))
		970	{
		971	req->type = EIO_CHOWN;
		972	req->ptr1 = SvPVbyte_nolen (req->sv1);
		973	}
		974	else
		975	{
		976	req->type = EIO_FCHOWN;
		977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		978	}
		979
		980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
		998	}
		999
		1000	void
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1002	ALIAS:
1184	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1185	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1186	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1187	PPCODE:	1006	PPCODE:
1188	{	1007	{
1189	dREQ;	1008	dREQ;
1190		1009
1191	req->type = ix;	1010	req->type = ix;
1192	req->data = newSVsv (pathname);	1011	req->sv1 = newSVsv (pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1012	req->ptr1 = SvPVbyte_nolen (req->sv1);
1194		1013
1195	REQ_SEND;	1014	REQ_SEND;
1196	}	1015	}
1197		1016
1198	void	1017	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:	1019	ALIAS:
1204	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1205	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1206	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1207	PPCODE:	1023	PPCODE:
1208	{	1024	{
1209	dREQ;	1025	dREQ;
1210		1026
1211	req->type = ix;	1027	req->type = ix;
1212	req->fh = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	req->data = newSVsv (newpath);	1030	req->sv2 = newSVsv (newpath);
1215	req->dataptr = SvPVbyte_nolen (req->data);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1216		1032
1217	REQ_SEND;	1033	REQ_SEND;
1218	}	1034	}
1219		1035
1220	void	1036	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1038	PPCODE:
1225	{	1039	{
1226	dREQ;	1040	dREQ;
1227		1041
1228	req->type = REQ_SLEEP;	1042	req->type = EIO_MKNOD;
1229	req->fd = delay < 0. ? 0 : delay;	1043	req->sv1 = newSVsv (pathname);
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1231		1045	req->int2 = (mode_t)mode;
		1046	req->offs = dev;
		1047
1232	REQ_SEND;	1048	REQ_SEND;
1233	}	1049	}
1234		1050
1235	void	1051	void
		1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1053	PPCODE:
		1054	{
		1055	dREQ;
		1056
		1057	req->type = EIO_BUSY;
		1058	req->nv1 = delay < 0. ? 0. : delay;
		1059
		1060	REQ_SEND;
		1061	}
		1062
		1063	void
1236	aio_group (callback=&PL_sv_undef)	1064	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1239	PPCODE:	1066	PPCODE:
1240	{	1067	{
1241	dREQ;	1068	dREQ;
1242		1069
1243	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
		1071
1244	req_send (req);	1072	req_submit (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1247	}	1074	}
1248		1075
1249	void	1076	void
1250	aio_nop (callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback	1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1252	PPCODE:	1081	PPCODE:
1253	{	1082	{
1254	dREQ;	1083	dREQ;
1255		1084
1256	req->type = REQ_NOP;	1085	req->type = ix;
1257		1086
1258	REQ_SEND;	1087	REQ_SEND;
1259	}	1088	}
1260		1089
1261	#if 0	1090	int
1262		1091	aioreq_pri (int pri = 0)
1263	void	1092	PROTOTYPE: ;$
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1093	CODE:
		1094	RETVAL = next_pri;
		1095	if (items > 0)
		1096	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1099	next_pri = pri;
		1100	}
		1101	OUTPUT:
		1102	RETVAL
1269		1103
1270	#endif	1104	void
		1105	aioreq_nice (int nice = 0)
		1106	CODE:
		1107	nice = next_pri - nice;
		1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1110	next_pri = nice;
1271		1111
1272	void	1112	void
1273	flush ()	1113	flush ()
1274	PROTOTYPE:	1114	PROTOTYPE:
1275	CODE:	1115	CODE:
1276	while (nreqs)	1116	while (eio_nreqs ())
1277	{	1117	{
1278	poll_wait ();	1118	poll_wait ();
1279	poll_cb ();	1119	poll_cb ();
1280	}	1120	}
1281		1121
1282	void	1122	int
1283	poll()	1123	poll()
1284	PROTOTYPE:	1124	PROTOTYPE:
1285	CODE:	1125	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();	1126	poll_wait ();
1289	poll_cb ();	1127	RETVAL = poll_cb ();
1290	}	1128	OUTPUT:
		1129	RETVAL
1291		1130
1292	int	1131	int
1293	poll_fileno()	1132	poll_fileno()
1294	PROTOTYPE:	1133	PROTOTYPE:
1295	CODE:	1134	CODE:
…		…
1307		1146
1308	void	1147	void
1309	poll_wait()	1148	poll_wait()
1310	PROTOTYPE:	1149	PROTOTYPE:
1311	CODE:	1150	CODE:
1312	if (nreqs)
1313	poll_wait ();	1151	poll_wait ();
1314		1152
1315	int	1153	int
1316	nreqs()	1154	nreqs()
1317	PROTOTYPE:	1155	PROTOTYPE:
1318	CODE:	1156	CODE:
1319	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1320	OUTPUT:	1158	OUTPUT:
1321	RETVAL	1159	RETVAL
1322		1160
		1161	int
		1162	nready()
		1163	PROTOTYPE:
		1164	CODE:
		1165	RETVAL = eio_nready ();
		1166	OUTPUT:
		1167	RETVAL
		1168
		1169	int
		1170	npending()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_npending ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	nthreads()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_nthreads ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1323	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1324		1209
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1211
1327	void	1212	void
1328	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1214	CODE:
1331	req_cancel (req);	1215	eio_cancel (req);
1332		1216
1333	void	1217	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1335	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1336	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1337	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1338		1232
1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1340		1234
1341	void	1235	void
1342	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1343	PPCODE:	1237	PPCODE:
1344	{	1238	{
1345	int i;	1239	int i;
1346	aio_req req;
1347		1240
1348	if (grp->fd == 2)	1241	if (grp->int1 == 2)
1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350		1243
1351	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1352	{	1245	{
		1246	aio_req req;
		1247
1353	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1355		1250
1356	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1357		1252
1358	if (req)	1253	if (req)
1359	{	1254	eio_grp_add (grp, req);
1360	++grp->length;
1361	req->grp = grp;
1362
1363	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;
1365
1366	if (grp->grp_first)
1367	grp->grp_first->grp_prev = req;
1368
1369	grp->grp_first = req;
1370	}	1255	}
1371	}
1372	}	1256	}
		1257
		1258	void
		1259	cancel_subs (aio_req_ornot req)
		1260	CODE:
		1261	req_cancel_subs (req);
1373		1262
1374	void	1263	void
1375	result (aio_req grp, ...)	1264	result (aio_req grp, ...)
1376	CODE:	1265	CODE:
1377	{	1266	{
1378	int i;	1267	int i;
		1268	AV *av;
		1269
		1270	grp->errorno = errno;
		1271
1379	AV *av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1380		1274
1381	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1383		1277
1384	SvREFCNT_dec (grp->data);	1278	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	1279	grp->sv1 = (SV *)av;
1386	}	1280	}
1387		1281
1388	void	1282	void
		1283	errno (aio_req grp, int errorno = errno)
		1284	CODE:
		1285	grp->errorno = errorno;
		1286
		1287	void
1389	feed_limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1390	CODE:	1289	CODE:
1391	grp->fd2 = limit;	1290	eio_grp_limit (grp, limit);
1392	aio_grp_feed (grp);
1393		1291
1394	void	1292	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	1294	CODE:
1397	{	1295	{
1398	SvREFCNT_dec (grp->fh2);	1296	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1400		1299
1401	if (grp->fd2 <= 0)	1300	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	1301	grp->int2 = 2;
1403		1302
1404	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1405	}	1304	}
1406		1305

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