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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.66 by root, Tue Oct 24 00:34:47 2006 UTC vs.
Revision 1.144 by root, Fri Jun 12 16:48:08 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 SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
47	#endif	83	#endif
48		84
49	#if __ia64	85	/*****************************************************************************/
50	# define STACKSIZE 65536	86
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	87	#if __GNUC__ >= 3
52	# define STACKSIZE PTHREAD_STACK_MIN	88	# define expect(expr,value) __builtin_expect ((expr),(value))
53	#else	89	#else
54	# define STACKSIZE 16384	90	# define expect(expr,value) (expr)
55	#endif	91	#endif
56		92
57	/* buffer size for various temporary buffers */	93	#define expect_false(expr) expect ((expr) != 0, 0)
58	#define AIO_BUFSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
59		95
60	#define dBUF \	96	/*****************************************************************************/
61	char *aio_buf = malloc (AIO_BUFSIZE); \
62	if (!aio_buf) \
63	return -1;
64		97
65	#define fBUF free (aio_buf)	98	static HV *stash;
66		99	typedef SV SV8; /* byte-sv, used for argument-checking */
67	enum {
68	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};
80		100
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		103
84	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;	105	SV *callback; \
89	SV *fh, *fh2;	106	SV *sv1, *sv2; \
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;	107	STRLEN stroffset; \
97	int type;	108	SV *self;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101		109
102	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
103	unsigned char pri;
104		111
105	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
107	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
108		118
109	enum {	119	enum {
110	FLAG_CANCELLED = 0x01,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
111	};	121	};
112		122
		123	#include "libeio/eio.c"
		124
113	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
115		127
116	enum {	128	static SV *on_next_submit;
117	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	};
123
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125
126	static int started, wanted;
127	static volatile int nreqs;
128	static int max_outstanding = 1<<30;	130	static int max_outstanding;
129	static int respipe [2];
130		131
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
133	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
135	#endif
136		133
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	134	static void req_destroy (aio_req req);
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
140
141	static volatile aio_req reqs, reqe; /* queue start, queue end */
142	static volatile aio_req ress, rese; /* queue start, queue end */
143
144	static void req_invoke (aio_req req);	135	static void req_cancel (aio_req req);
145	static void req_free (aio_req req);	136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
146		150
147	/* must be called at most once */	151	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
149	{	153	{
150	if (!req->self)	154	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	173	}
170		174
171	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
172	{	176	{
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	177	if (grp->sv2 && SvOK (grp->sv2))
174	{	178	{
175	int old_len = grp->length;	179	dSP;
176		180
177	if (grp->fh2 && SvOK (grp->fh2))	181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191	}
		192
		193	static void req_submit (eio_req *req)
		194	{
		195	eio_submit (req);
		196
		197	if (expect_false (on_next_submit))
		198	{
		199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
		207	}
		208	}
		209
		210	static int req_invoke (eio_req *req)
		211	{
		212	dSP;
		213
		214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
		218	{
		219	ENTER;
		220	SAVETMPS;
		221	PUSHMARK (SP);
		222	EXTEND (SP, 1);
		223
		224	switch (req->type)
178	{	225	{
179	dSP;	226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
180		229
181	ENTER;	230	if (req->result >= 0)
182	SAVETMPS;	231	{
183	PUSHMARK (SP);	232	int i;
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	233	char *buf = req->ptr2;
185	PUTBACK;	234	AV *av = newAV ();
186	call_sv (grp->fh2, G_VOID | G_EVAL);	235
187	SPAGAIN;	236	av_extend (av, req->result - 1);
188	FREETMPS;	237
189	LEAVE;	238	for (i = 0; i < req->result; ++i)
		239	{
		240	if (req->int1 & EIO_READDIR_DENTS)
		241	{
		242	eio_dirent *ent = (eio_dirent *)buf;
		243	SV *namesv = newSVpvn (ent->name, ent->namelen);
		244
		245	if (req->int1 & EIO_READDIR_CUSTOM2)
		246	{
		247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		248	AV *avent = newAV ();
		249
		250	av_extend (avent, 2);
		251
		252	if (!sv_type [ent->type])
		253	{
		254	sv_type [ent->type] = newSViv (ent->type);
		255	SvREADONLY_on (sv_type [ent->type]);
		256	}
		257
		258	av_store (avent, 0, namesv);
		259	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		260	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
		265	av_store (av, i, namesv);
		266
		267	buf += sizeof (eio_dirent);
		268	}
		269	else
		270	{
		271	SV *name = newSVpv (buf, 0);
		272	av_store (av, i, name);
		273	buf += SvCUR (name) + 1;
		274	}
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281
		282	if (req->int1 & EIO_READDIR_CUSTOM1)
		283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		284	}
		285	break;
		286
		287	case EIO_OPEN:
		288	{
		289	/* convert fd to fh */
		290	SV *fh = &PL_sv_undef;
		291
		292	if (req->result >= 0)
		293	{
		294	GV *gv = (GV *)sv_newmortal ();
		295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		296	char sym [64];
		297	int symlen;
		298
		299	symlen = snprintf (sym, sizeof (sym), "fd#%u", (unsigned int)req->result);
		300	gv_init (gv, stash, sym, symlen, 0);
		301
		302	symlen = snprintf (
		303	sym,
		304	sizeof (sym),
		305	"%s&=%u",
		306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		307	(unsigned int)req->result
		308	);
		309
		310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		311	fh = (SV *)gv;
		312	}
		313
		314	PUSHs (fh);
		315	}
		316	break;
		317
		318	case EIO_GROUP:
		319	req->int1 = 2; /* mark group as finished */
		320
		321	if (req->sv1)
		322	{
		323	int i;
		324	AV *av = (AV *)req->sv1;
		325
		326	EXTEND (SP, AvFILL (av) + 1);
		327	for (i = 0; i <= AvFILL (av); ++i)
		328	PUSHs (*av_fetch (av, i, 0));
		329	}
		330	break;
		331
		332	case EIO_NOP:
		333	case EIO_BUSY:
		334	break;
		335
		336	case EIO_READLINK:
		337	if (req->result > 0)
		338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		339	break;
		340
		341	case EIO_STAT:
		342	case EIO_LSTAT:
		343	case EIO_FSTAT:
		344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		345	PL_laststatval = req->result;
		346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		347	PUSHs (sv_2mortal (newSViv (req->result)));
		348	break;
		349
		350	case EIO_READ:
		351	{
		352	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		353	*SvEND (req->sv2) = 0;
		354	SvPOK_only (req->sv2);
		355	SvSETMAGIC (req->sv2);
		356	PUSHs (sv_2mortal (newSViv (req->result)));
		357	}
		358	break;
		359
		360	case EIO_DUP2:
		361	if (req->result > 0)
		362	req->result = 0;
		363	/* FALLTHROUGH */
		364
		365	default:
		366	PUSHs (sv_2mortal (newSViv (req->result)));
		367	break;
190	}	368	}
191		369
192	/* stop if no progress has been made */	370	errno = req->errorno;
193	if (old_len == grp->length)	371
194	{	372	PUTBACK;
195	SvREFCNT_dec (grp->fh2);	373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
196	grp->fh2 = 0;	374	SPAGAIN;
197	break;	375
198	}	376	FREETMPS;
		377	LEAVE;
		378
		379	PUTBACK;
199	}	380	}
200	}
201		381
202	static void aio_grp_dec (aio_req grp)	382	return !!SvTRUE (ERRSV);
203	{
204	--grp->length;
205
206	/* call feeder, if applicable */
207	aio_grp_feed (grp);
208
209	/* finish, if done */
210	if (!grp->length && grp->fd)
211	{
212	req_invoke (grp);
213	req_free (grp);
214	}
215	}	383	}
216		384
217	static void poll_wait ()
218	{
219	fd_set rfd;
220
221	while (nreqs)
222	{
223	aio_req req;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
225	pthread_mutex_lock (&reslock);
226	#endif
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231
232	if (req)
233	return;
234
235	FD_ZERO(&rfd);
236	FD_SET(respipe [0], &rfd);
237
238	select (respipe [0] + 1, &rfd, 0, 0, 0);
239	}
240	}
241
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)	385	static void req_destroy (aio_req req)
342	{	386	{
343	if (req->grp)
344	{
345	aio_req grp = req->grp;
346
347	/* unlink request */
348	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
349	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
350
351	if (grp->grp_first == req)
352	grp->grp_first = req->grp_next;
353
354	aio_grp_dec (grp);
355	}
356
357	if (req->self)	387	if (req->self)
358	{	388	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	389	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	390	SvREFCNT_dec (req->self);
361	}	391	}
362		392
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	393	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	394	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368
369	if (req->type == REQ_READDIR && req->result >= 0)
370	free (req->data2ptr);
371		396
372	Safefree (req);	397	Safefree (req);
373	}	398	}
374		399
375	static void req_cancel (aio_req req)	400	static void req_cancel_subs (aio_req grp)
376	{	401	{
377	req->flags |= FLAG_CANCELLED;	402	aio_req sub;
378		403
379	if (req->type == REQ_GROUP)	404	if (grp->type != EIO_GROUP)
		405	return;
		406
		407	SvREFCNT_dec (grp->sv2);
		408	grp->sv2 = 0;
		409
		410	eio_grp_cancel (grp);
		411	}
		412
		413	#ifdef USE_SOCKETS_AS_HANDLES
		414	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		415	#else
		416	# define TO_SOCKET(x) (x)
		417	#endif
		418
		419	static void
		420	create_respipe (void)
		421	{
		422	int old_readfd = respipe [0];
		423
		424	if (respipe [1] >= 0)
		425	respipe_close (TO_SOCKET (respipe [1]));
		426
		427	#ifdef _WIN32
		428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		429	#else
		430	if (pipe (respipe))
		431	#endif
		432	croak ("unable to initialize result pipe");
		433
		434	if (old_readfd >= 0)
380	{	435	{
381	aio_req sub;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		437	croak ("unable to initialize result pipe(2)");
382		438
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	439	respipe_close (respipe [0]);
384	req_cancel (sub);	440	respipe [0] = old_readfd;
385	}	441	}
386	}
387		442
		443	#ifdef _WIN32
		444	int arg = 1;
		445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		447	#else
		448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
		452
		453	respipe_osf [0] = TO_SOCKET (respipe [0]);
		454	respipe_osf [1] = TO_SOCKET (respipe [1]);
		455	}
		456
		457	static void poll_wait (void)
		458	{
		459	fd_set rfd;
		460
		461	while (eio_nreqs ())
		462	{
		463	int size;
		464
		465	X_LOCK (reslock);
		466	size = res_queue.size;
		467	X_UNLOCK (reslock);
		468
		469	if (size)
		470	return;
		471
		472	etp_maybe_start_thread ();
		473
		474	FD_ZERO (&rfd);
		475	FD_SET (respipe [0], &rfd);
		476
		477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		478	}
		479	}
		480
388	static int poll_cb ()	481	static int poll_cb (void)
389	{	482	{
390	dSP;
391	int count = 0;
392	int do_croak = 0;
393	aio_req req;
394
395	for (;;)	483	for (;;)
396	{	484	{
397	pthread_mutex_lock (&reslock);	485	int res = eio_poll ();
398	req = ress;
399		486
400	if (req)	487	if (res > 0)
401	{
402	ress = req->next;
403
404	if (!ress)
405	{
406	/* read any signals sent by the worker threads */
407	char buf [32];
408	while (read (respipe [0], buf, 32) == 32)
409	;
410
411	rese = 0;
412	}
413	}
414
415	pthread_mutex_unlock (&reslock);
416
417	if (!req)
418	break;	488	croak (0);
419		489
420	--nreqs;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
421		492
422	if (req->type == REQ_QUIT)	493	poll_wait ();
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	494	}
451
452	return count;
453	}	495	}
454		496
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)	497	static void atfork_child (void)
458	{	498	{
459	sigset_t fullsigset, oldsigset;	499	create_respipe ();
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}	500	}
475		501
476	static void req_send (aio_req req)	502	static SV *
		503	get_cb (SV *cb_sv)
477	{	504	{
478	while (started < wanted && nreqs >= started)	505	HV *st;
479	start_thread ();	506	GV *gvp;
		507	CV *cv;
480		508
481	++nreqs;	509	if (!SvOK (cb_sv))
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}
544
545	static void create_pipe ()
546	{
547	if (pipe (respipe))
548	croak ("unable to initialize result pipe");
549
550	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
551	croak ("cannot set result pipe to nonblocking mode");
552
553	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
554	croak ("cannot set result pipe to nonblocking mode");
555	}
556
557	/*****************************************************************************/
558	/* work around various missing functions */
559
560	#if !HAVE_PREADWRITE
561	# define pread aio_pread
562	# define pwrite aio_pwrite
563
564	/*
565	* make our pread/pwrite safe against themselves, but not against
566	* normal read/write by using a mutex. slows down execution a lot,
567	* but that's your problem, not mine.
568	*/
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
570
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{
573	ssize_t res;
574	off_t ooffset;
575
576	pthread_mutex_lock (&preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);
582
583	return res;
584	}
585
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{
588	ssize_t res;
589	off_t ooffset;
590
591	pthread_mutex_lock (&preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);
597
598	return res;
599	}
600	#endif
601
602	#if !HAVE_FDATASYNC
603	# define fdatasync fsync
604	#endif
605
606	#if !HAVE_READAHEAD
607	# define readahead aio_readahead
608
609	static ssize_t readahead (int fd, off_t offset, size_t count)
610	{
611	dBUF;
612
613	while (count > 0)
614	{
615	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
616
617	pread (fd, aio_buf, len, offset);
618	offset += len;
619	count -= len;
620	}
621
622	fBUF;
623
624	errno = 0;
625	}
626	#endif
627
628	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r
630
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
632
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{
635	struct dirent *e;
636	int errorno;
637
638	pthread_mutex_lock (&readdirlock);
639
640	e = readdir (dirp);
641	errorno = errno;
642
643	if (e)
644	{
645	*res = ent;
646	strcpy (ent->d_name, e->d_name);
647	}
648	else
649	*res = 0;
650
651	pthread_mutex_unlock (&readdirlock);
652
653	errno = errorno;
654	return e ? 0 : -1;
655	}
656	#endif
657
658	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
660	{
661	ssize_t res;
662
663	if (!count)
664	return 0;	510	return 0;
665		511
666	#if HAVE_SENDFILE	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
667	# if __linux
668	res = sendfile (ofd, ifd, &offset, count);
669		513
670	# elif __freebsd	514	if (!cv)
671	/*	515	croak ("IO::AIO callback must be undef or a CODE reference");
672	* Of course, the freebsd sendfile is a dire hack with no thoughts
673	* wasted on making it similar to other I/O functions.
674	*/
675	{
676	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		516
679	if (res < 0 && sbytes)	517	return (SV *)cv;
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
681	res = sbytes;
682	}
683
684	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);
686
687	# elif __solaris
688	{
689	struct sendfilevec vec;
690	size_t sbytes;
691
692	vec.sfv_fd = ifd;
693	vec.sfv_flag = 0;
694	vec.sfv_off = offset;
695	vec.sfv_len = count;
696
697	res = sendfilev (ofd, &vec, 1, &sbytes);
698
699	if (res < 0 && sbytes)
700	res = sbytes;
701	}
702
703	# endif
704	#else
705	res = -1;
706	errno = ENOSYS;
707	#endif
708
709	if (res < 0
710	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
711	#if __solaris
712	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
713	#endif
714	)
715	)
716	{
717	/* emulate sendfile. this is a major pain in the ass */
718	dBUF;
719
720	res = 0;
721
722	while (count)
723	{
724	ssize_t cnt;
725
726	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
727
728	if (cnt <= 0)
729	{
730	if (cnt && !res) res = -1;
731	break;
732	}
733
734	cnt = write (ofd, aio_buf, cnt);
735
736	if (cnt <= 0)
737	{
738	if (cnt && !res) res = -1;
739	break;
740	}
741
742	offset += cnt;
743	res += cnt;
744	count -= cnt;
745	}
746
747	fBUF;
748	}
749
750	return res;
751	}
752
753	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)
755	{
756	DIR *dirp;
757	union
758	{
759	struct dirent d;
760	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
761	} *u;
762	struct dirent *entp;
763	char *name, *names;
764	int memlen = 4096;
765	int memofs = 0;
766	int res = 0;
767	int errorno;
768
769	dirp = opendir (path);
770	if (!dirp)
771	return -1;
772
773	u = malloc (sizeof (*u));
774	names = malloc (memlen);
775
776	if (u && names)
777	for (;;)
778	{
779	errno = 0;
780	readdir_r (dirp, &u->d, &entp);
781
782	if (!entp)
783	break;
784
785	name = entp->d_name;
786
787	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
788	{
789	int len = strlen (name) + 1;
790
791	res++;
792
793	while (memofs + len > memlen)
794	{
795	memlen *= 2;
796	names = realloc (names, memlen);
797	if (!names)
798	break;
799	}
800
801	memcpy (names + memofs, name, len);
802	memofs += len;
803	}
804	}
805
806	errorno = errno;
807	free (u);
808	closedir (dirp);
809
810	if (errorno)
811	{
812	free (names);
813	errno = errorno;
814	res = -1;
815	}
816
817	*namesp = (void *)names;
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831
832	for (;;)
833	{
834	req = reqs;
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841
842	if (req)
843	break;
844
845	pthread_cond_wait (&reqwait, &reqlock);
846	}
847
848	pthread_mutex_unlock (&reqlock);
849
850	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852
853	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)
855	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
858
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
861
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
865
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
873
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
877
878	case REQ_SLEEP:
879	{
880	struct timeval tv;
881
882	tv.tv_sec = req->fd;
883	tv.tv_usec = req->fd2;
884
885	req->result = select (0, 0, 0, 0, &tv);
886	}
887
888	case REQ_GROUP:
889	case REQ_NOP:
890	case REQ_QUIT:
891	break;
892
893	default:
894	req->result = ENOSYS;
895	break;
896	}
897
898	req->errorno = errno;
899
900	pthread_mutex_lock (&reslock);
901
902	req->next = 0;
903
904	if (rese)
905	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);
915	}
916
917	pthread_mutex_unlock (&reslock);
918	}
919	while (type != REQ_QUIT);
920
921	return 0;
922	}
923
924	/*****************************************************************************/
925
926	static void atfork_prepare (void)
927	{
928	pthread_mutex_lock (&reqlock);
929	pthread_mutex_lock (&reslock);
930	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);
932	#endif
933	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);
935	#endif
936	}
937
938	static void atfork_parent (void)
939	{
940	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);
942	#endif
943	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);
945	#endif
946	pthread_mutex_unlock (&reslock);
947	pthread_mutex_unlock (&reqlock);
948	}
949
950	static void atfork_child (void)
951	{
952	aio_req prv;
953
954	started = 0;
955
956	while (reqs)
957	{
958	prv = reqs;
959	reqs = prv->next;
960	req_free (prv);
961	}
962
963	reqs = reqe = 0;
964
965	while (ress)
966	{
967	prv = ress;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973
974	close (respipe [0]);
975	close (respipe [1]);
976	create_pipe ();
977
978	atfork_parent ();
979	}	518	}
980		519
981	#define dREQ \	520	#define dREQ \
		521	SV *cb_cv; \
982	aio_req req; \	522	aio_req req; \
983	int req_pri = next_pri; \	523	int req_pri = next_pri; \
984	next_pri = DEFAULT_PRI + PRI_BIAS; \	524	next_pri = EIO_PRI_DEFAULT; \
985	\	525	\
986	if (SvOK (callback) && !SvROK (callback)) \	526	cb_cv = get_cb (callback); \
987	croak ("callback must be undef or of reference type"); \
988	\	527	\
989	Newz (0, req, 1, aio_cb); \	528	Newz (0, req, 1, eio_req); \
990	if (!req) \	529	if (!req) \
991	croak ("out of memory during aio_req allocation"); \	530	croak ("out of memory during eio_req allocation"); \
992	\	531	\
993	req->callback = newSVsv (callback); \	532	req->callback = SvREFCNT_inc (cb_cv); \
994	req->pri = req_pri	533	req->pri = req_pri
995		534
996	#define REQ_SEND \	535	#define REQ_SEND \
		536	PUTBACK; \
997	req_send (req); \	537	req_submit (req); \
		538	SPAGAIN; \
998	\	539	\
999	if (GIMME_V != G_VOID) \	540	if (GIMME_V != G_VOID) \
1000	XPUSHs (req_sv (req, AIO_REQ_KLASS));	541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1001		542
		543	static int
		544	extract_fd (SV *fh, int wr)
		545	{
		546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		547
		548	if (fd < 0)
		549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		550
		551	return fd;
		552	}
		553
1002	MODULE = IO::AIO PACKAGE = IO::AIO	554	MODULE = IO::AIO PACKAGE = IO::AIO
1003		555
1004	PROTOTYPES: ENABLE	556	PROTOTYPES: ENABLE
1005		557
1006	BOOT:	558	BOOT:
1007	{	559	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	560	stash = gv_stashpv ("IO::AIO", 1);
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1012		561
		562	static const struct {
		563	const char *name;
		564	IV iv;
		565	} *civ, const_iv[] = {
		566	# define const_iv(name, value) { # name, (IV) value },
		567	# define const_eio(name) { # name, (IV) EIO_ ## name },
		568	const_iv (EXDEV , EXDEV)
		569	const_iv (ENOSYS , ENOSYS)
		570	const_iv (O_RDONLY, O_RDONLY)
		571	const_iv (O_WRONLY, O_WRONLY)
		572	const_iv (O_CREAT , O_CREAT)
		573	const_iv (O_TRUNC , O_TRUNC)
		574	#ifndef _WIN32
		575	const_iv (S_IFIFO , S_IFIFO)
		576	#endif
		577	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		578	const_eio (SYNC_FILE_RANGE_WRITE)
		579	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		580
		581	const_eio (READDIR_DENTS)
		582	const_eio (READDIR_DIRS_FIRST)
		583	const_eio (READDIR_STAT_ORDER)
		584	const_eio (READDIR_FOUND_UNKNOWN)
		585
		586	const_eio (DT_UNKNOWN)
		587	const_eio (DT_FIFO)
		588	const_eio (DT_CHR)
		589	const_eio (DT_DIR)
		590	const_eio (DT_BLK)
		591	const_eio (DT_REG)
		592	const_eio (DT_LNK)
		593	const_eio (DT_SOCK)
		594	const_eio (DT_WHT)
		595	};
		596
		597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		599
1013	create_pipe ();	600	create_respipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1015	}
1016		601
		602	if (eio_init (want_poll, done_poll) < 0)
		603	croak ("IO::AIO: unable to initialise eio library");
		604
		605	/* atfork child called in fifo order, so before eio's handler */
		606	X_THREAD_ATFORK (0, 0, atfork_child);
		607	}
		608
1017	void	609	void
1018	min_parallel (nthreads)	610	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	611	PROTOTYPE: $
		612	CODE:
		613	eio_set_max_poll_reqs (nreqs);
1021		614
1022	void	615	void
1023	max_parallel (nthreads)	616	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	617	PROTOTYPE: $
1026
1027	int
1028	max_outstanding (nreqs)
1029	int nreqs
1030	PROTOTYPE: $
1031	CODE:	618	CODE:
1032	RETVAL = max_outstanding;	619	eio_set_max_poll_time (nseconds);
		620
		621	void
		622	min_parallel (int nthreads)
		623	PROTOTYPE: $
		624	CODE:
		625	eio_set_min_parallel (nthreads);
		626
		627	void
		628	max_parallel (int nthreads)
		629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_parallel (nthreads);
		632
		633	void
		634	max_idle (int nthreads)
		635	PROTOTYPE: $
		636	CODE:
		637	eio_set_max_idle (nthreads);
		638
		639	void
		640	max_outstanding (int maxreqs)
		641	PROTOTYPE: $
		642	CODE:
1033	max_outstanding = nreqs;	643	max_outstanding = maxreqs;
1034		644
1035	void	645	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
1042	PPCODE:	648	PPCODE:
1043	{	649	{
1044	dREQ;	650	dREQ;
1045		651
1046	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
1047	req->data = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	655	req->int1 = flags;
1050	req->mode = mode;	656	req->int2 = mode;
1051		657
1052	REQ_SEND;	658	REQ_SEND;
1053	}	659	}
1054		660
1055	void	661	void
1056	aio_close (fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	663	PROTOTYPE: $;$
1060	ALIAS:	664	ALIAS:
1061	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
1064	PPCODE:	667	PPCODE:
1065	{	668	{
		669	int fd = extract_fd (fh, 0);
1066	dREQ;	670	dREQ;
1067		671
1068	req->type = ix;	672	req->type = ix;
1069	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
1071		675
1072	REQ_SEND (req);	676	REQ_SEND (req);
1073	}	677	}
1074		678
1075	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	728	ALIAS:
1084	aio_read = REQ_READ	729	aio_read = EIO_READ
1085	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
1086	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
1087	PPCODE:	732	PPCODE:
1088	{	733	{
1089	aio_req req;
1090	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
1091	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
1092		737	UV len = SvUV (length);
1093	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);
1095		738
1096	if (dataoffset < 0)	739	if (dataoffset < 0)
1097	dataoffset += svlen;	740	dataoffset += svlen;
1098		741
1099	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
1100	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
1101		744
1102	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
1103	{	746	{
1104	/* write: check length and adjust. */	747	/* write: check length and adjust. */
1105	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
1106	length = svlen - dataoffset;	749	len = svlen - dataoffset;
1107	}	750	}
1108	else	751	else
1109	{	752	{
1110	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
1111	svptr = SvGROW (data, length + dataoffset);	755	svptr = SvGROW (data, len + dataoffset + 1);
1112	}	756	}
1113
1114	if (length < 0)
1115	croak ("length must not be negative");
1116		757
1117	{	758	{
1118	dREQ;	759	dREQ;
1119		760
1120	req->type = ix;	761	req->type = ix;
1121	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
1123	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1124	req->offset = offset;	765	req->size = len;
1125	req->length = length;
1126	req->data = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
1128		769
1129	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
1130	{	771	{
1131	SvREADONLY_on (data);	772	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	773	req->flags |= FLAG_SV2_RO_OFF;
1133	}	774	}
1134		775
1135	REQ_SEND;	776	REQ_SEND;
1136	}	777	}
1137	}	778	}
1138		779
1139	void	780	void
		781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		782	PROTOTYPE: $$;$
		783	PPCODE:
		784	{
		785	SV *data;
		786	dREQ;
		787
		788	req->type = EIO_READLINK;
		789	req->sv1 = newSVsv (path);
		790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		791
		792	REQ_SEND;
		793	}
		794
		795	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
1147	PPCODE:	798	PPCODE:
1148	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
1149	dREQ;	802	dREQ;
1150		803
1151	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
1152	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
1154	req->fh2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
1156	req->offset = in_offset;	809	req->offs = SvVAL64 (in_offset);
1157	req->length = length;	810	req->size = length;
1158		811
1159	REQ_SEND;	812	REQ_SEND;
1160	}	813	}
1161		814
1162	void	815	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1169	PPCODE:	818	PPCODE:
1170	{	819	{
		820	int fd = extract_fd (fh, 0);
1171	dREQ;	821	dREQ;
1172		822
1173	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
1174	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
1176	req->offset = offset;	826	req->offs = SvVAL64 (offset);
1177	req->length = length;	827	req->size = length;
1178		828
1179	REQ_SEND;	829	REQ_SEND;
1180	}	830	}
1181		831
1182	void	832	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	834	ALIAS:
1187	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
1188	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
1189	PPCODE:	837	PPCODE:
1190	{	838	{
1191	dREQ;	839	dREQ;
1192		840
1193	New (0, req->statdata, 1, Stat_t);	841	req->sv1 = newSVsv (fh_or_path);
1194	if (!req->statdata)
1195	{
1196	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");
1198	}
1199		842
1200	if (SvPOK (fh_or_path))	843	if (SvPOK (req->sv1))
1201	{	844	{
1202	req->type = ix;	845	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	847	}
1206	else	848	else
1207	{	849	{
1208	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	852	}
1212		853
1213	REQ_SEND;	854	REQ_SEND;
1214	}	855	}
1215		856
1216	void	857	void
		858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
		863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		865	req->sv1 = newSVsv (fh_or_path);
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_UTIME;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FUTIME;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->sv1 = newSVsv (fh_or_path);
		888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = EIO_TRUNCATE;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FTRUNCATE;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_chmod = EIO_CHMOD
		908	aio_mkdir = EIO_MKDIR
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = mode;
		914	req->sv1 = newSVsv (fh_or_path);
		915
		916	if (SvPOK (req->sv1))
		917	{
		918	req->type = ix;
		919	req->ptr1 = SvPVbyte_nolen (req->sv1);
		920	}
		921	else
		922	{
		923	req->type = EIO_FCHMOD;
		924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		925	}
		926
		927	REQ_SEND;
		928	}
		929
		930	void
		931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		932	PPCODE:
		933	{
		934	dREQ;
		935
		936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		938	req->sv1 = newSVsv (fh_or_path);
		939
		940	if (SvPOK (req->sv1))
		941	{
		942	req->type = EIO_CHOWN;
		943	req->ptr1 = SvPVbyte_nolen (req->sv1);
		944	}
		945	else
		946	{
		947	req->type = EIO_FCHOWN;
		948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		949	}
		950
		951	REQ_SEND;
		952	}
		953
		954	void
		955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		956	PPCODE:
		957	{
		958	dREQ;
		959
		960	req->type = EIO_READDIR;
		961	req->sv1 = newSVsv (pathname);
		962	req->ptr1 = SvPVbyte_nolen (req->sv1);
		963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		964
		965	if (flags & EIO_READDIR_DENTS)
		966	req->int1 |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	973	ALIAS:
1221	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
1222	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
1223	aio_readdir = REQ_READDIR	976	aio_readdir = EIO_READDIR
1224	PPCODE:	977	PPCODE:
1225	{	978	{
1226	dREQ;	979	dREQ;
1227		980
1228	req->type = ix;	981	req->type = ix;
1229	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984
		985	REQ_SEND;
		986	}
		987
		988	void
		989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		990	ALIAS:
		991	aio_link = EIO_LINK
		992	aio_symlink = EIO_SYMLINK
		993	aio_rename = EIO_RENAME
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = ix;
		999	req->sv1 = newSVsv (oldpath);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->sv2 = newSVsv (newpath);
		1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
1231		1003
1232	REQ_SEND;	1004	REQ_SEND;
1233	}	1005	}
1234		1006
1235	void	1007	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:
1241	aio_link = REQ_LINK
1242	aio_symlink = REQ_SYMLINK
1243	aio_rename = REQ_RENAME
1244	PPCODE:	1009	PPCODE:
1245	{	1010	{
1246	dREQ;	1011	dREQ;
1247		1012
1248	req->type = ix;	1013	req->type = EIO_MKNOD;
1249	req->fh = newSVsv (oldpath);	1014	req->sv1 = newSVsv (pathname);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1251	req->data = newSVsv (newpath);	1016	req->int2 = (mode_t)mode;
1252	req->dataptr = SvPVbyte_nolen (req->data);	1017	req->offs = dev;
1253		1018
1254	REQ_SEND;	1019	REQ_SEND;
1255	}	1020	}
1256		1021
1257	void	1022	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1024	PPCODE:
1262	{	1025	{
1263	dREQ;	1026	dREQ;
1264		1027
1265	req->type = REQ_SLEEP;	1028	req->type = EIO_BUSY;
1266	req->fd = delay < 0. ? 0 : delay;	1029	req->nv1 = delay < 0. ? 0. : delay;
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1268		1030
1269	REQ_SEND;	1031	REQ_SEND;
1270	}	1032	}
1271		1033
1272	void	1034	void
1273	aio_group (callback=&PL_sv_undef)	1035	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	1036	PROTOTYPE: ;$
1276	PPCODE:	1037	PPCODE:
1277	{	1038	{
1278	dREQ;	1039	dREQ;
1279		1040
1280	req->type = REQ_GROUP;	1041	req->type = EIO_GROUP;
		1042
1281	req_send (req);	1043	req_submit (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	1045	}
1285		1046
1286	void	1047	void
1287	aio_nop (callback=&PL_sv_undef)	1048	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback	1049	ALIAS:
		1050	aio_nop = EIO_NOP
		1051	aio_sync = EIO_SYNC
1289	PPCODE:	1052	PPCODE:
1290	{	1053	{
1291	dREQ;	1054	dREQ;
1292		1055
1293	req->type = REQ_NOP;	1056	req->type = ix;
1294		1057
1295	REQ_SEND;	1058	REQ_SEND;
1296	}	1059	}
1297		1060
1298	#if 0	1061	int
1299		1062	aioreq_pri (int pri = 0)
1300	void	1063	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1064	CODE:
		1065	RETVAL = next_pri;
		1066	if (items > 0)
		1067	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1069	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1070	next_pri = pri;
		1071	}
		1072	OUTPUT:
		1073	RETVAL
1306		1074
1307	#endif	1075	void
		1076	aioreq_nice (int nice = 0)
		1077	CODE:
		1078	nice = next_pri - nice;
		1079	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1081	next_pri = nice;
1308		1082
1309	void	1083	void
1310	flush ()	1084	flush ()
1311	PROTOTYPE:	1085	PROTOTYPE:
1312	CODE:	1086	CODE:
1313	while (nreqs)	1087	while (eio_nreqs ())
1314	{	1088	{
1315	poll_wait ();	1089	poll_wait ();
1316	poll_cb ();	1090	poll_cb ();
1317	}	1091	}
1318		1092
1319	void	1093	int
1320	poll()	1094	poll()
1321	PROTOTYPE:	1095	PROTOTYPE:
1322	CODE:	1096	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1097	poll_wait ();
1326	poll_cb ();	1098	RETVAL = poll_cb ();
1327	}	1099	OUTPUT:
		1100	RETVAL
1328		1101
1329	int	1102	int
1330	poll_fileno()	1103	poll_fileno()
1331	PROTOTYPE:	1104	PROTOTYPE:
1332	CODE:	1105	CODE:
…		…
1344		1117
1345	void	1118	void
1346	poll_wait()	1119	poll_wait()
1347	PROTOTYPE:	1120	PROTOTYPE:
1348	CODE:	1121	CODE:
1349	if (nreqs)
1350	poll_wait ();	1122	poll_wait ();
1351		1123
1352	int	1124	int
1353	nreqs()	1125	nreqs()
1354	PROTOTYPE:	1126	PROTOTYPE:
1355	CODE:	1127	CODE:
1356	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1357	OUTPUT:	1129	OUTPUT:
1358	RETVAL	1130	RETVAL
1359		1131
		1132	int
		1133	nready()
		1134	PROTOTYPE:
		1135	CODE:
		1136	RETVAL = eio_nready ();
		1137	OUTPUT:
		1138	RETVAL
		1139
		1140	int
		1141	npending()
		1142	PROTOTYPE:
		1143	CODE:
		1144	RETVAL = eio_npending ();
		1145	OUTPUT:
		1146	RETVAL
		1147
		1148	int
		1149	nthreads()
		1150	PROTOTYPE:
		1151	CODE:
		1152	RETVAL = eio_nthreads ();
		1153	OUTPUT:
		1154	RETVAL
		1155
		1156	void _on_next_submit (SV *cb)
		1157	CODE:
		1158	SvREFCNT_dec (on_next_submit);
		1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1160
1360	PROTOTYPES: DISABLE	1161	PROTOTYPES: DISABLE
1361		1162
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1164
1364	void	1165	void
1365	cancel (aio_req_ornot req)	1166	cancel (aio_req_ornot req)
1366	CODE:	1167	CODE:
1367	req_cancel (req);	1168	eio_cancel (req);
1368		1169
1369	void	1170	void
1370	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1371	CODE:	1172	PPCODE:
		1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1176
		1177	if (items > 1)
		1178	{
		1179	SV *cb_cv = get_cb (callback);
		1180
1372	SvREFCNT_dec (req->callback);	1181	SvREFCNT_dec (req->callback);
1373	req->callback = newSVsv (callback);	1182	req->callback = SvREFCNT_inc (cb_cv);
		1183	}
		1184	}
1374		1185
1375	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1376		1187
1377	void	1188	void
1378	add (aio_req grp, ...)	1189	add (aio_req grp, ...)
1379	PPCODE:	1190	PPCODE:
1380	{	1191	{
1381	int i;	1192	int i;
1382	aio_req req;
1383		1193
1384	if (grp->fd == 2)	1194	if (grp->int1 == 2)
1385	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1386		1196
1387	for (i = 1; i < items; ++i )	1197	for (i = 1; i < items; ++i )
1388	{	1198	{
		1199	aio_req req;
		1200
1389	if (GIMME_V != G_VOID)	1201	if (GIMME_V != G_VOID)
1390	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1391		1203
1392	req = SvAIO_REQ (ST (i));	1204	req = SvAIO_REQ (ST (i));
1393		1205
1394	if (req)	1206	if (req)
1395	{	1207	eio_grp_add (grp, req);
1396	++grp->length;
1397	req->grp = grp;
1398
1399	req->grp_prev = 0;
1400	req->grp_next = grp->grp_first;
1401
1402	if (grp->grp_first)
1403	grp->grp_first->grp_prev = req;
1404
1405	grp->grp_first = req;
1406	}	1208	}
1407	}
1408	}	1209	}
		1210
		1211	void
		1212	cancel_subs (aio_req_ornot req)
		1213	CODE:
		1214	req_cancel_subs (req);
1409		1215
1410	void	1216	void
1411	result (aio_req grp, ...)	1217	result (aio_req grp, ...)
1412	CODE:	1218	CODE:
1413	{	1219	{
1414	int i;	1220	int i;
		1221	AV *av;
		1222
		1223	grp->errorno = errno;
		1224
1415	AV *av = newAV ();	1225	av = newAV ();
		1226	av_extend (av, items - 1);
1416		1227
1417	for (i = 1; i < items; ++i )	1228	for (i = 1; i < items; ++i )
1418	av_push (av, newSVsv (ST (i)));	1229	av_push (av, newSVsv (ST (i)));
1419		1230
1420	SvREFCNT_dec (grp->data);	1231	SvREFCNT_dec (grp->sv1);
1421	grp->data = (SV *)av;	1232	grp->sv1 = (SV *)av;
1422	}	1233	}
1423		1234
1424	void	1235	void
		1236	errno (aio_req grp, int errorno = errno)
		1237	CODE:
		1238	grp->errorno = errorno;
		1239
		1240	void
1425	feed_limit (aio_req grp, int limit)	1241	limit (aio_req grp, int limit)
1426	CODE:	1242	CODE:
1427	grp->fd2 = limit;	1243	eio_grp_limit (grp, limit);
1428	aio_grp_feed (grp);
1429		1244
1430	void	1245	void
1431	feed (aio_req grp, SV *callback=&PL_sv_undef)	1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
1432	CODE:	1247	CODE:
1433	{	1248	{
1434	SvREFCNT_dec (grp->fh2);	1249	SvREFCNT_dec (grp->sv2);
1435	grp->fh2 = newSVsv (callback);	1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
1436		1252
1437	if (grp->fd2 <= 0)	1253	if (grp->int2 <= 0)
1438	grp->fd2 = 2;	1254	grp->int2 = 2;
1439		1255
1440	aio_grp_feed (grp);	1256	eio_grp_limit (grp, grp->int2);
1441	}	1257	}
1442		1258

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