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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.201 by root, Thu Sep 29 09:57:12 2011 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"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
23	#include <limits.h>	16	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	17	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	18	#include <sched.h>
28		19
29	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30	# if __linux
31	# include <sys/sendfile.h>
32	# elif __freebsd
33	# include <sys/socket.h>
34	# include <sys/uio.h>	21	# include <sys/mman.h>
35	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
36	# include <sys/socket.h>	69	#include <sys/time.h>
37	# elif __solaris /* not yet */
38	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
39	# else	295	# else
40	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	297	# endif
42	#endif	298	#endif
43		299	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
48		314
49	#if __ia64	315	#ifndef makedev
50	# define STACKSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
51	#else	317	#endif
52	# define STACKSIZE 8192	318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
		324
		325	#ifndef PAGESIZE
		326	# define PAGESIZE sysconf (_SC_PAGESIZE)
53	#endif	327	#endif
54		328
55	enum {	329	enum {
56	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
57	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,
67	};	331	};
68		332
69	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"
71
72	typedef struct aio_cb
73	{
74	struct aio_cb *volatile next;
75
76	SV *data, *callback;
77	SV *fh, *fh2;
78	void *dataptr, *data2ptr;
79	Stat_t *statdata;
80	off_t offset;
81	size_t length;
82	ssize_t result;
83
84	STRLEN dataoffset;
85	int type;
86	int fd, fd2;
87	int errorno;
88	mode_t mode; /* open */
89
90	unsigned char flags;
91	unsigned char pri;
92
93	SV *self; /* the perl counterpart of this request, if any */
94	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
95	} aio_cb;
96
97	enum {
98	FLAG_CANCELLED = 0x01,
99	};
100
101	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
102	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
103		336
104	enum {	337	static SV *on_next_submit;
105	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
106	PRI_MAX = 4,
107
108	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,
110	};
111
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113
114	static int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;	339	static int max_outstanding;
117	static int respipe [2];
118		340
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	static s_epipe respipe;
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif
124		342
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	343	static void req_destroy (aio_req req);
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128
129	static volatile aio_req reqs, reqe; /* queue start, queue end */
130	static volatile aio_req ress, rese; /* queue start, queue end */
131
132	static void req_invoke (aio_req req);	344	static void req_cancel (aio_req req);
133	static void req_free (aio_req req);	345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
134		359
135	/* must be called at most once */	360	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
137	{	363	{
138	if (!req->self)	364	if (!req->self)
139	{	365	{
140	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
141	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
142	}	368	}
143		369
144	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
145	}	371	}
146		372
147	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
148	{	381	{
149	MAGIC *mg;	382	MAGIC *mg;
150		383
151	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		386	&& SvSTASH (SvRV (sv)) != aio_req_stash
		387	&& !sv_derived_from (sv, "IO::AIO::REQ")))
152	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
153		389
154	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
155		391
156	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
157	}	393	}
158		394
		395	static aio_wd
		396	SvAIO_WD (SV *sv)
		397	{
		398	if (!SvROK (sv)
		399	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		401	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		402
		403	return (aio_wd)(long)SvIVX (SvRV (sv));
		404	}
		405
		406	static void
159	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
160	{	408	{
161	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	409	if (grp->sv2 && SvOK (grp->sv2))
162	{	410	{
163	int old_len = grp->length;	411	dSP;
164		412
165	if (grp->fh2 && SvOK (grp->fh2))	413	ENTER;
		414	SAVETMPS;
		415	PUSHMARK (SP);
		416	XPUSHs (req_sv (grp, aio_grp_stash));
		417	PUTBACK;
		418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		419	SPAGAIN;
		420	FREETMPS;
		421	LEAVE;
		422	}
		423	}
		424
		425	static void
		426	req_submit (eio_req *req)
		427	{
		428	eio_submit (req);
		429
		430	if (expect_false (on_next_submit))
		431	{
		432	dSP;
		433	SV *cb = sv_2mortal (on_next_submit);
		434
		435	on_next_submit = 0;
		436
		437	PUSHMARK (SP);
		438	PUTBACK;
		439	call_sv (cb, G_DISCARD | G_EVAL);
		440	}
		441	}
		442
		443	static int
		444	req_invoke (eio_req *req)
		445	{
		446	if (req->flags & FLAG_SV2_RO_OFF)
		447	SvREADONLY_off (req->sv2);
		448
		449	if (!EIO_CANCELLED (req) && req->callback)
		450	{
		451	dSP;
		452	static SV *sv_result_cache; /* caches the result integer SV */
		453	SV *sv_result;
		454
		455	ENTER;
		456	SAVETMPS;
		457	PUSHMARK (SP);
		458	EXTEND (SP, 1);
		459
		460	/* do not recreate the result IV from scratch each time */
		461	if (expect_true (sv_result_cache))
166	{	462	{
167	dSP;	463	sv_result = sv_result_cache; sv_result_cache = 0;
168		464	SvIV_set (sv_result, req->result);
169	ENTER;	465	SvIOK_only (sv_result);
170	SAVETMPS;
171	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);
175	SPAGAIN;
176	FREETMPS;
177	LEAVE;
178	}	466	}
179		467	else
180	/* stop if no progress has been made */
181	if (old_len == grp->length)
182	{	468	{
183	SvREFCNT_dec (grp->fh2);	469	sv_result = newSViv (req->result);
184	grp->fh2 = 0;	470	SvREADONLY_on (sv_result);
185	break;
186	}	471	}
		472
		473	switch (req->type)
		474	{
		475	case EIO_WD_OPEN:
		476	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		477	break;
		478
		479	case EIO_READDIR:
		480	{
		481	SV *rv = &PL_sv_undef;
		482
		483	if (req->result >= 0)
		484	{
		485	int i;
		486	char *names = (char *)req->ptr2;
		487	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		488	AV *av = newAV ();
		489
		490	av_extend (av, req->result - 1);
		491
		492	for (i = 0; i < req->result; ++i)
		493	{
		494	if (req->int1 & EIO_READDIR_DENTS)
		495	{
		496	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		497
		498	if (req->int1 & EIO_READDIR_CUSTOM2)
		499	{
		500	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		501	AV *avent = newAV ();
		502
		503	av_extend (avent, 2);
		504
		505	if (!sv_type [ent->type])
		506	{
		507	sv_type [ent->type] = newSViv (ent->type);
		508	SvREADONLY_on (sv_type [ent->type]);
		509	}
		510
		511	av_store (avent, 0, namesv);
		512	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		513	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		514
		515	av_store (av, i, newRV_noinc ((SV *)avent));
		516	}
		517	else
		518	av_store (av, i, namesv);
		519
		520	++ent;
		521	}
		522	else
		523	{
		524	SV *name = newSVpv (names, 0);
		525	av_store (av, i, name);
		526	names += SvCUR (name) + 1;
		527	}
		528	}
		529
		530	rv = sv_2mortal (newRV_noinc ((SV *)av));
		531	}
		532
		533	PUSHs (rv);
		534
		535	if (req->int1 & EIO_READDIR_CUSTOM1)
		536	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		537	}
		538	break;
		539
		540	case EIO_OPEN:
		541	{
		542	/* convert fd to fh */
		543	SV *fh = &PL_sv_undef;
		544
		545	if (req->result >= 0)
		546	{
		547	GV *gv = (GV *)sv_newmortal ();
		548	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		549	char sym [64];
		550	int symlen;
		551
		552	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		553	gv_init (gv, aio_stash, sym, symlen, 0);
		554
		555	symlen = snprintf (
		556	sym,
		557	sizeof (sym),
		558	"%s&=%d",
		559	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		560	(int)req->result
		561	);
		562
		563	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		564	fh = (SV *)gv;
		565	}
		566
		567	PUSHs (fh);
		568	}
		569	break;
		570
		571	case EIO_STATVFS:
		572	case EIO_FSTATVFS:
		573	{
		574	SV *rv = &PL_sv_undef;
		575
		576	#ifndef _WIN32
		577	if (req->result >= 0)
		578	{
		579	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		580	HV *hv = newHV ();
		581
		582	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		583
		584	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		585	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		586	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		587	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		588	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		589	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		590	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		591	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		592	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		593	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		594	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		595	}
		596	#endif
		597
		598	PUSHs (rv);
		599	}
		600
		601	break;
		602
		603	case EIO_GROUP:
		604	req->int1 = 2; /* mark group as finished */
		605
		606	if (req->sv1)
		607	{
		608	int i;
		609	AV *av = (AV *)req->sv1;
		610
		611	EXTEND (SP, AvFILL (av) + 1);
		612	for (i = 0; i <= AvFILL (av); ++i)
		613	PUSHs (*av_fetch (av, i, 0));
		614	}
		615	break;
		616
		617	case EIO_NOP:
		618	case EIO_BUSY:
		619	break;
		620
		621	case EIO_READLINK:
		622	case EIO_REALPATH:
		623	if (req->result > 0)
		624	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		625	break;
		626
		627	case EIO_STAT:
		628	case EIO_LSTAT:
		629	case EIO_FSTAT:
		630	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		631
		632	if (!(PL_laststatval = req->result))
		633	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		634	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		635
		636	PUSHs (sv_result);
		637	break;
		638
		639	case EIO_READ:
		640	{
		641	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		642	*SvEND (req->sv2) = 0;
		643	SvPOK_only (req->sv2);
		644	SvSETMAGIC (req->sv2);
		645	PUSHs (sv_result);
		646	}
		647	break;
		648
		649	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		650	if (req->result > 0)
		651	SvIV_set (sv_result, 0);
		652	/* FALLTHROUGH */
		653
		654	default:
		655	PUSHs (sv_result);
		656	break;
		657	}
		658
		659	errno = req->errorno;
		660
		661	PUTBACK;
		662	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		663	SPAGAIN;
		664
		665	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		666	SvREFCNT_dec (sv_result);
		667	else
		668	sv_result_cache = sv_result;
		669
		670	FREETMPS;
		671	LEAVE;
		672
		673	PUTBACK;
187	}	674	}
188	}
189		675
190	static void aio_grp_dec (aio_req grp)	676	return !!SvTRUE (ERRSV);
191	{
192	--grp->length;
193
194	/* call feeder, if applicable */
195	aio_grp_feed (grp);
196
197	/* finish, if done */
198	if (!grp->length && grp->fd)
199	{
200	req_invoke (grp);
201	req_free (grp);
202	}
203	}	677	}
204		678
205	static void poll_wait ()	679	static void
		680	req_destroy (aio_req req)
206	{	681	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	pthread_mutex_lock (&reslock);
213	req = ress;
214	pthread_mutex_unlock (&reslock);
215
216	if (req)
217	return;
218
219	FD_ZERO(&rfd);
220	FD_SET(respipe [0], &rfd);
221
222	select (respipe [0] + 1, &rfd, 0, 0, 0);
223	}
224	}
225
226	static void req_invoke (aio_req req)
227	{
228	dSP;
229	int errorno = errno;
230
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
232	return;
233
234	errno = req->errorno;
235
236	ENTER;
237	SAVETMPS;
238	PUSHMARK (SP);
239	EXTEND (SP, 1);
240
241	switch (req->type)
242	{
243	case REQ_READDIR:
244	{
245	SV *rv = &PL_sv_undef;
246
247	if (req->result >= 0)
248	{
249	char *buf = req->data2ptr;
250	AV *av = newAV ();
251
252	while (req->result)
253	{
254	SV *sv = newSVpv (buf, 0);
255
256	av_push (av, sv);
257	buf += SvCUR (sv) + 1;
258	req->result--;
259	}
260
261	rv = sv_2mortal (newRV_noinc ((SV *)av));
262	}
263
264	PUSHs (rv);
265	}
266	break;
267
268	case REQ_OPEN:
269	{
270	/* convert fd to fh */
271	SV *fh;
272
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;
312
313	FREETMPS;
314	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{
320	req_free (req);
321	croak (0);
322	}
323	}
324
325	static void req_free (aio_req req)
326	{
327	if (req->grp)
328	{
329	aio_req grp = req->grp;
330
331	/* unlink request */
332	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
333	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
334
335	if (grp->grp_first == req)
336	grp->grp_first = req->grp_next;
337
338	aio_grp_dec (grp);
339	}
340
341	if (req->self)	682	if (req->self)
342	{	683	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
345	}	686	}
346		687
347	SvREFCNT_dec (req->data);
348	SvREFCNT_dec (req->fh);	688	SvREFCNT_dec (req->sv1);
349	SvREFCNT_dec (req->fh2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
350	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);
352
353	if (req->type == REQ_READDIR && req->result >= 0)
354	free (req->data2ptr);
355		693
356	Safefree (req);	694	Safefree (req);
357	}	695	}
358		696
359	static void req_cancel (aio_req req)	697	static void
		698	req_cancel_subs (aio_req grp)
360	{	699	{
361	req->flags |= FLAG_CANCELLED;
362
363	if (req->type == REQ_GROUP)	700	if (grp->type != EIO_GROUP)
		701	return;
		702
		703	SvREFCNT_dec (grp->sv2);
		704	grp->sv2 = 0;
		705
		706	eio_grp_cancel (grp);
		707	}
		708
		709	static void ecb_cold
		710	create_respipe (void)
		711	{
		712	if (s_epipe_renew (&respipe))
		713	croak ("IO::AIO: unable to initialize result pipe");
		714	}
		715
		716	static void
		717	poll_wait (void)
		718	{
		719	while (eio_nreqs ())
364	{	720	{
365	aio_req sub;	721	int size;
366		722
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	723	X_LOCK (reslock);
368	req_cancel (sub);	724	size = res_queue.size;
		725	X_UNLOCK (reslock);
		726
		727	if (size)
		728	return;
		729
		730	etp_maybe_start_thread ();
		731
		732	s_epipe_wait (&respipe);
369	}	733	}
370	}	734	}
371		735
372	static int poll_cb ()	736	static int
		737	poll_cb (void)
373	{	738	{
374	dSP;
375	int count = 0;
376	int do_croak = 0;
377	aio_req req;
378
379	for (;;)	739	for (;;)
380	{	740	{
381	pthread_mutex_lock (&reslock);	741	int res = eio_poll ();
382	req = ress;
383		742
384	if (req)	743	if (res > 0)
		744	croak (0);
		745
		746	if (!max_outstanding || max_outstanding > eio_nreqs ())
		747	return res;
		748
		749	poll_wait ();
		750	}
		751	}
		752
		753	static void ecb_cold
		754	reinit (void)
		755	{
		756	create_respipe ();
		757
		758	if (eio_init (want_poll, done_poll) < 0)
		759	croak ("IO::AIO: unable to initialise eio library");
		760	}
		761
		762	/*****************************************************************************/
		763
		764	#if !_POSIX_MAPPED_FILES
		765	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		766	# define munmap(addr,length) (errno = ENOSYS, -1)
		767	#endif
		768
		769	#if !_POSIX_MEMORY_PROTECTION
		770	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		771	# define PROT_NONE 0
		772	# define PROT_WRITE 0
		773	# define MAP_PRIVATE 0
		774	# define MAP_SHARED 0
		775	# define MAP_FIXED 0
		776	#endif
		777
		778	#define MMAP_MAGIC PERL_MAGIC_ext
		779
		780	static int ecb_cold
		781	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		782	{
		783	int old_errno = errno;
		784	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		785	errno = old_errno;
		786
		787	mg->mg_obj = 0; /* just in case */
		788
		789	SvREADONLY_off (sv);
		790
		791	if (SvPVX (sv) != mg->mg_ptr)
		792	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		793
		794	SvCUR_set (sv, 0);
		795	SvPVX (sv) = 0;
		796	SvOK_off (sv);
		797
		798	return 0;
		799	}
		800
		801	static MGVTBL mmap_vtbl = {
		802	0, 0, 0, 0, mmap_free
		803	};
		804
		805	/*****************************************************************************/
		806
		807	static SV *
		808	get_cb (SV *cb_sv)
		809	{
		810	SvGETMAGIC (cb_sv);
		811	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		812	}
		813
		814	#define dREQ \
		815	SV *cb_cv; \
		816	aio_req req; \
		817	int req_pri = next_pri; \
		818	next_pri = EIO_PRI_DEFAULT; \
		819	\
		820	cb_cv = get_cb (callback); \
		821	\
		822	Newz (0, req, 1, eio_req); \
		823	if (!req) \
		824	croak ("out of memory during eio_req allocation"); \
		825	\
		826	req->callback = SvREFCNT_inc (cb_cv); \
		827	req->pri = req_pri
		828
		829	#define REQ_SEND \
		830	PUTBACK; \
		831	req_submit (req); \
		832	SPAGAIN; \
		833	\
		834	if (GIMME_V != G_VOID) \
		835	XPUSHs (req_sv (req, aio_req_stash));
		836
		837	ecb_inline void
		838	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		839	{
		840	if (expect_false (SvROK (path)))
		841	{
		842	AV *av = (AV *)SvRV (path);
		843	SV *wdob;
		844
		845	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		846	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		847
		848	path = AvARRAY (av)[1];
		849	wdob = AvARRAY (av)[0];
		850
		851	if (SvOK (wdob))
385	{	852	{
386	ress = req->next;	853	*wd = SvAIO_WD (wdob);
387		854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
388	if (!ress)
389	{
390	/* read any signals sent by the worker threads */
391	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)
393	;
394
395	rese = 0;
396	}
397	}
398
399	pthread_mutex_unlock (&reslock);
400
401	if (!req)
402	break;
403
404	--nreqs;
405
406	if (req->type == REQ_QUIT)
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}	855	}
413	else	856	else
414	{	857	*wd = EIO_INVALID_WD;
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	858	}
435		859
436	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
437	}	862	}
438		863
439	static void *aio_proc(void *arg);	864	static void ecb_noinline
440		865	req_set_path1 (aio_req req, SV *path)
441	static void start_thread (void)
442	{	866	{
443	sigset_t fullsigset, oldsigset;	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}	868	}
459		869
460	static void req_send (aio_req req)	870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
461	{	872	{
462	while (started < wanted && nreqs >= started)	873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
463	start_thread ();
464		874
465	++nreqs;	875	switch (SvTYPE (rv))
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{	876	{
473	reqe->next = req;	877	case SVt_PVIO:
474	reqe = req;	878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
475	}	889	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}	890	}
493		891
494	static void end_thread (void)	892	MODULE = IO::AIO PACKAGE = IO::AIO
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499		893
500	req_send (req);	894	PROTOTYPES: ENABLE
501	}
502		895
503	static void min_parallel (int nthreads)	896	BOOT:
504	{	897	{
505	if (wanted < nthreads)	898	static const struct {
506	wanted = nthreads;	899	const char *name;
507	}	900	IV iv;
		901	} *civ, const_iv[] = {
		902	# define const_niv(name, value) { # name, (IV) value },
		903	# define const_iv(name) { # name, (IV) name },
		904	# define const_eio(name) { # name, (IV) EIO_ ## name },
		905	const_iv (EXDEV)
		906	const_iv (ENOSYS)
		907	const_iv (O_RDONLY)
		908	const_iv (O_WRONLY)
		909	const_iv (O_RDWR)
		910	const_iv (O_CREAT)
		911	const_iv (O_TRUNC)
		912	const_iv (O_EXCL)
		913	const_iv (O_APPEND)
508		914
509	static void max_parallel (int nthreads)	915	const_iv (O_ASYNC)
510	{	916	const_iv (O_DIRECT)
511	int cur = started;	917	const_iv (O_NOATIME)
512		918
513	if (wanted > nthreads)	919	const_iv (O_CLOEXEC)
514	wanted = nthreads;	920	const_iv (O_NOCTTY)
		921	const_iv (O_NOFOLLOW)
		922	const_iv (O_NONBLOCK)
		923	const_iv (O_EXEC)
		924	const_iv (O_SEARCH)
		925	const_iv (O_DIRECTORY)
		926	const_iv (O_DSYNC)
		927	const_iv (O_RSYNC)
		928	const_iv (O_SYNC)
		929	const_iv (O_TTY_INIT)
515		930
516	while (cur > wanted)	931	const_iv (S_IFIFO)
517	{	932	const_iv (S_IFCHR)
518	end_thread ();	933	const_iv (S_IFBLK)
519	cur--;	934	const_iv (S_IFLNK)
520	}	935	const_iv (S_IFREG)
		936	const_iv (S_IFDIR)
		937	const_iv (S_IFWHT)
		938	const_iv (S_IFSOCK)
		939	const_iv (S_IFMT)
521		940
522	while (started > wanted)	941	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
523	{	942	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
524	poll_wait ();	943	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
525	poll_cb ();	944	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
526	}	945	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
527	}	946	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
528		947
529	static void create_pipe ()	948	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
530	{	949	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
531	if (pipe (respipe))	950	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
532	croak ("unable to initialize result pipe");	951	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		952	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
533		953
534	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	954	const_iv (ST_RDONLY)
535	croak ("cannot set result pipe to nonblocking mode");	955	const_iv (ST_NOSUID)
		956	const_iv (ST_NODEV)
		957	const_iv (ST_NOEXEC)
		958	const_iv (ST_SYNCHRONOUS)
		959	const_iv (ST_MANDLOCK)
		960	const_iv (ST_WRITE)
		961	const_iv (ST_APPEND)
		962	const_iv (ST_IMMUTABLE)
		963	const_iv (ST_NOATIME)
		964	const_iv (ST_NODIRATIME)
		965	const_iv (ST_RELATIME)
536		966
537	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	967	const_iv (PROT_NONE)
538	croak ("cannot set result pipe to nonblocking mode");	968	const_iv (PROT_EXEC)
539	}	969	const_iv (PROT_READ)
		970	const_iv (PROT_WRITE)
540		971
541	/*****************************************************************************/	972	/*const_iv (MAP_FIXED)*/
542	/* work around various missing functions */	973	const_iv (MAP_PRIVATE)
		974	const_iv (MAP_SHARED)
		975	const_iv (MAP_ANONYMOUS)
543		976
544	#if !HAVE_PREADWRITE	977	/* linuxish */
545	# define pread aio_pread	978	const_iv (MAP_HUGETLB)
546	# define pwrite aio_pwrite	979	const_iv (MAP_LOCKED)
		980	const_iv (MAP_NORESERVE)
		981	const_iv (MAP_POPULATE)
		982	const_iv (MAP_NONBLOCK)
547		983
548	/*	984	const_eio (MCL_FUTURE)
549	* make our pread/pwrite safe against themselves, but not against	985	const_eio (MCL_CURRENT)
550	* normal read/write by using a mutex. slows down execution a lot,
551	* but that's your problem, not mine.
552	*/
553	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
554		986
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	987	const_eio (MS_ASYNC)
556	{	988	const_eio (MS_INVALIDATE)
557	ssize_t res;	989	const_eio (MS_SYNC)
558	off_t ooffset;
559		990
560	pthread_mutex_lock (&preadwritelock);	991	const_eio (MT_MODIFY)
561	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);
566		992
567	return res;	993	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
568	}	994	const_eio (SYNC_FILE_RANGE_WRITE)
		995	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
569		996
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	997	const_eio (FALLOC_FL_KEEP_SIZE)
571	{
572	ssize_t res;
573	off_t ooffset;
574		998
575	pthread_mutex_lock (&preadwritelock);	999	const_eio (READDIR_DENTS)
576	ooffset = lseek (fd, 0, SEEK_CUR);	1000	const_eio (READDIR_DIRS_FIRST)
577	lseek (fd, offset, SEEK_SET);	1001	const_eio (READDIR_STAT_ORDER)
578	res = write (fd, buf, count);	1002	const_eio (READDIR_FOUND_UNKNOWN)
579	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);
581		1003
582	return res;	1004	const_eio (DT_UNKNOWN)
583	}	1005	const_eio (DT_FIFO)
584	#endif	1006	const_eio (DT_CHR)
585		1007	const_eio (DT_DIR)
586	#if !HAVE_FDATASYNC	1008	const_eio (DT_BLK)
587	# define fdatasync fsync	1009	const_eio (DT_REG)
588	#endif	1010	const_eio (DT_LNK)
589		1011	const_eio (DT_SOCK)
590	#if !HAVE_READAHEAD	1012	const_eio (DT_WHT)
591	# define readahead aio_readahead
592
593	static ssize_t readahead (int fd, off_t offset, size_t count)
594	{
595	char readahead_buf[4096];
596
597	while (count > 0)
598	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
600
601	pread (fd, readahead_buf, len, offset);
602	offset += len;
603	count -= len;
604	}
605
606	errno = 0;
607	}
608	#endif
609
610	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r
612
613	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
614
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{
617	struct dirent *e;
618	int errorno;
619
620	pthread_mutex_lock (&readdirlock);
621
622	e = readdir (dirp);
623	errorno = errno;
624
625	if (e)
626	{
627	*res = ent;
628	strcpy (ent->d_name, e->d_name);
629	}
630	else
631	*res = 0;
632
633	pthread_mutex_unlock (&readdirlock);
634
635	errno = errorno;
636	return e ? 0 : -1;
637	}
638	#endif
639
640	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
642	{
643	ssize_t res;
644
645	if (!count)
646	return 0;
647
648	#if HAVE_SENDFILE
649	# if __linux
650	res = sendfile (ofd, ifd, &offset, count);
651
652	# elif __freebsd
653	/*
654	* Of course, the freebsd sendfile is a dire hack with no thoughts
655	* wasted on making it similar to other I/O functions.
656	*/
657	{
658	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660
661	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
663	res = sbytes;
664	}	1013	};
665		1014
666	# elif __hpux	1015	aio_stash = gv_stashpv ("IO::AIO" , 1);
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	1016	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1017	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1018	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
668		1019
669	# elif __solaris	1020	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
670	{	1021	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
671	struct sendfilevec vec;
672	size_t sbytes;
673		1022
674	vec.sfv_fd = ifd;	1023	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
675	vec.sfv_flag = 0;
676	vec.sfv_off = offset;
677	vec.sfv_len = count;
678		1024
679	res = sendfilev (ofd, &vec, 1, &sbytes);	1025	reinit ();
		1026	}
680		1027
681	if (res < 0 && sbytes)	1028	void
		1029	reinit ()
		1030	PROTOTYPE:
		1031
		1032	void
		1033	max_poll_reqs (unsigned int nreqs)
		1034	PROTOTYPE: $
		1035	CODE:
		1036	eio_set_max_poll_reqs (nreqs);
		1037
		1038	void
		1039	max_poll_time (double nseconds)
		1040	PROTOTYPE: $
		1041	CODE:
		1042	eio_set_max_poll_time (nseconds);
		1043
		1044	void
		1045	min_parallel (unsigned int nthreads)
		1046	PROTOTYPE: $
		1047	CODE:
		1048	eio_set_min_parallel (nthreads);
		1049
		1050	void
		1051	max_parallel (unsigned int nthreads)
		1052	PROTOTYPE: $
		1053	CODE:
		1054	eio_set_max_parallel (nthreads);
		1055
		1056	void
		1057	max_idle (unsigned int nthreads)
		1058	PROTOTYPE: $
		1059	CODE:
		1060	eio_set_max_idle (nthreads);
		1061
		1062	void
		1063	idle_timeout (unsigned int seconds)
		1064	PROTOTYPE: $
		1065	CODE:
		1066	eio_set_idle_timeout (seconds);
		1067
		1068	void
		1069	max_outstanding (unsigned int maxreqs)
		1070	PROTOTYPE: $
		1071	CODE:
		1072	max_outstanding = maxreqs;
		1073
		1074	void
		1075	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1076	PPCODE:
		1077	{
		1078	dREQ;
		1079
		1080	req->type = EIO_WD_OPEN;
		1081	req_set_path1 (req, pathname);
		1082
		1083	REQ_SEND;
		1084	}
		1085
		1086	void
		1087	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1088	PPCODE:
		1089	{
		1090	dREQ;
		1091
		1092	req->type = EIO_OPEN;
		1093	req_set_path1 (req, pathname);
		1094	req->int1 = flags;
		1095	req->int2 = mode;
		1096
		1097	REQ_SEND;
		1098	}
		1099
		1100	void
		1101	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1102	ALIAS:
		1103	aio_fsync = EIO_FSYNC
		1104	aio_fdatasync = EIO_FDATASYNC
		1105	aio_syncfs = EIO_SYNCFS
		1106	PPCODE:
		1107	{
		1108	int fd = s_fileno_croak (fh, 0);
		1109	dREQ;
		1110
		1111	req->type = ix;
		1112	req->sv1 = newSVsv (fh);
		1113	req->int1 = fd;
		1114
		1115	REQ_SEND (req);
		1116	}
		1117
		1118	void
		1119	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1120	PPCODE:
		1121	{
		1122	int fd = s_fileno_croak (fh, 0);
		1123	dREQ;
		1124
		1125	req->type = EIO_SYNC_FILE_RANGE;
		1126	req->sv1 = newSVsv (fh);
		1127	req->int1 = fd;
		1128	req->offs = offset;
682	res = sbytes;	1129	req->size = nbytes;
683	}	1130	req->int2 = flags;
684		1131
685	# endif	1132	REQ_SEND (req);
		1133	}
		1134
		1135	void
		1136	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1137	PPCODE:
		1138	{
		1139	int fd = s_fileno_croak (fh, 0);
		1140	dREQ;
		1141
		1142	req->type = EIO_FALLOCATE;
		1143	req->sv1 = newSVsv (fh);
		1144	req->int1 = fd;
		1145	req->int2 = mode;
		1146	req->offs = offset;
		1147	req->size = len;
		1148
		1149	REQ_SEND (req);
		1150	}
		1151
		1152	void
		1153	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1154	PPCODE:
		1155	{
		1156	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1157	int fd = s_fileno_croak (fh, 0);
		1158	dREQ;
		1159
		1160	if (expect_false (close_fd < 0))
		1161	{
		1162	int pipefd [2];
		1163
		1164	if (
		1165	#ifdef _WIN32
		1166	_pipe (pipefd, 1, _O_BINARY) < 0
686	#else	1167	#else
687	res = -1;	1168	pipe (pipefd) < 0
688	errno = ENOSYS;	1169	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
689	#endif	1170	#endif
690		1171	|| close (pipefd [1]) < 0
691	if (res < 0
692	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
693	#if __solaris
694	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
695	#endif
696	)
697	)
698	{
699	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];
701	res = 0;
702
703	while (count)
704	{
705	ssize_t cnt;
706
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
708
709	if (cnt <= 0)
710	{	1172	)
711	if (cnt && !res) res = -1;	1173	abort (); /*D*/
712	break;
713	}
714		1174
715	cnt = write (ofd, buf, cnt);	1175	close_fd = pipefd [0];
716
717	if (cnt <= 0)
718	{
719	if (cnt && !res) res = -1;
720	break;
721	}
722
723	offset += cnt;
724	res += cnt;
725	count -= cnt;
726	}
727	}
728
729	return res;
730	}
731
732	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)
734	{
735	DIR *dirp = opendir (path);
736	union
737	{
738	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;
741	struct dirent *entp;
742	char *name, *names;
743	int memlen = 4096;
744	int memofs = 0;
745	int res = 0;
746	int errorno;
747
748	if (!dirp)
749	return -1;
750
751	names = malloc (memlen);
752
753	for (;;)
754	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);
756
757	if (!entp)
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805
806	for (;;)
807	{
808	req = reqs;
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815
816	if (req)
817	break;
818
819	pthread_cond_wait (&reqwait, &reqlock);
820	}
821
822	pthread_mutex_unlock (&reqlock);
823
824	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826
827	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)
829	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
832
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
835
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
839
840	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
841	case REQ_CLOSE: req->result = close (req->fd); break;
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
847
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
851
852	case REQ_SLEEP:
853	{
854	struct timeval tv;
855
856	tv.tv_sec = req->fd;
857	tv.tv_usec = req->fd2;
858
859	req->result = select (0, 0, 0, 0, &tv);
860	}
861
862	case REQ_GROUP:
863	case REQ_NOP:
864	case REQ_QUIT:
865	break;
866
867	default:
868	req->result = ENOSYS;
869	break;
870	}	1176	}
871		1177
872	req->errorno = errno;
873
874	pthread_mutex_lock (&reslock);
875
876	req->next = 0;
877
878	if (rese)
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);
889	}
890
891	pthread_mutex_unlock (&reslock);
892	}
893	while (type != REQ_QUIT);
894
895	return 0;
896	}
897
898	/*****************************************************************************/
899
900	static void atfork_prepare (void)
901	{
902	pthread_mutex_lock (&reqlock);
903	pthread_mutex_lock (&reslock);
904	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);
906	#endif
907	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);
909	#endif
910	}
911
912	static void atfork_parent (void)
913	{
914	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);
916	#endif
917	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);
919	#endif
920	pthread_mutex_unlock (&reslock);
921	pthread_mutex_unlock (&reqlock);
922	}
923
924	static void atfork_child (void)
925	{
926	aio_req prv;
927
928	started = 0;
929
930	while (reqs)
931	{
932	prv = reqs;
933	reqs = prv->next;
934	req_free (prv);
935	}
936
937	reqs = reqe = 0;
938
939	while (ress)
940	{
941	prv = ress;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947
948	close (respipe [0]);
949	close (respipe [1]);
950	create_pipe ();
951
952	atfork_parent ();
953	}
954
955	#define dREQ \
956	aio_req req; \
957	int req_pri = next_pri; \
958	next_pri = DEFAULT_PRI + PRI_BIAS; \
959	\
960	if (SvOK (callback) && !SvROK (callback)) \
961	croak ("callback must be undef or of reference type"); \
962	\
963	Newz (0, req, 1, aio_cb); \
964	if (!req) \
965	croak ("out of memory during aio_req allocation"); \
966	\
967	req->callback = newSVsv (callback); \
968	req->pri = req_pri
969
970	#define REQ_SEND \
971	req_send (req); \
972	\
973	if (GIMME_V != G_VOID) \
974	XPUSHs (req_sv (req, AIO_REQ_KLASS));
975
976	MODULE = IO::AIO PACKAGE = IO::AIO
977
978	PROTOTYPES: ENABLE
979
980	BOOT:
981	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
986
987	create_pipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}
990
991	void
992	min_parallel (nthreads)
993	int nthreads
994	PROTOTYPE: $
995
996	void
997	max_parallel (nthreads)
998	int nthreads
999	PROTOTYPE: $
1000
1001	int
1002	max_outstanding (nreqs)
1003	int nreqs
1004	PROTOTYPE: $
1005	CODE:
1006	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;
1008
1009	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1011	SV * pathname
1012	int flags
1013	int mode
1014	SV * callback
1015	PROTOTYPE: $$$;$
1016	PPCODE:
1017	{
1018	dREQ;
1019
1020	req->type = REQ_OPEN;	1178	req->type = EIO_DUP2;
		1179	req->int1 = close_fd;
1021	req->data = newSVsv (pathname);	1180	req->sv2 = newSVsv (fh);
1022	req->dataptr = SvPVbyte_nolen (req->data);	1181	req->int2 = fd;
1023	req->fd = flags;
1024	req->mode = mode;
1025		1182
1026	REQ_SEND;	1183	REQ_SEND (req);
1027	}	1184	}
1028		1185
1029	void	1186	void
1030	aio_close (fh,callback=&PL_sv_undef)	1187	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1031	SV * fh
1032	SV * callback
1033	PROTOTYPE: $;$
1034	ALIAS:	1188	ALIAS:
1035	aio_close = REQ_CLOSE
1036	aio_fsync = REQ_FSYNC
1037	aio_fdatasync = REQ_FDATASYNC
1038	PPCODE:
1039	{
1040	dREQ;
1041
1042	req->type = ix;
1043	req->fh = newSVsv (fh);
1044	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1045
1046	REQ_SEND (req);
1047	}
1048
1049	void
1050	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1051	SV * fh
1052	UV offset
1053	UV length
1054	SV * data
1055	UV dataoffset
1056	SV * callback
1057	ALIAS:
1058	aio_read = REQ_READ	1189	aio_read = EIO_READ
1059	aio_write = REQ_WRITE	1190	aio_write = EIO_WRITE
1060	PROTOTYPE: $$$$$;$
1061	PPCODE:	1191	PPCODE:
1062	{	1192	{
1063	aio_req req;
1064	STRLEN svlen;	1193	STRLEN svlen;
		1194	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1065	char *svptr = SvPVbyte (data, svlen);	1195	char *svptr = SvPVbyte (data, svlen);
1066		1196	UV len = SvUV (length);
1067	SvUPGRADE (data, SVt_PV);
1068	SvPOK_on (data);
1069		1197
1070	if (dataoffset < 0)	1198	if (dataoffset < 0)
1071	dataoffset += svlen;	1199	dataoffset += svlen;
1072		1200
1073	if (dataoffset < 0 || dataoffset > svlen)	1201	if (dataoffset < 0 || dataoffset > svlen)
1074	croak ("data offset outside of string");	1202	croak ("dataoffset outside of data scalar");
1075		1203
1076	if (ix == REQ_WRITE)	1204	if (ix == EIO_WRITE)
1077	{	1205	{
1078	/* write: check length and adjust. */	1206	/* write: check length and adjust. */
1079	if (length < 0 || length + dataoffset > svlen)	1207	if (!SvOK (length) || len + dataoffset > svlen)
1080	length = svlen - dataoffset;	1208	len = svlen - dataoffset;
1081	}	1209	}
1082	else	1210	else
1083	{	1211	{
1084	/* read: grow scalar as necessary */	1212	/* read: check type and grow scalar as necessary */
		1213	SvUPGRADE (data, SVt_PV);
1085	svptr = SvGROW (data, length + dataoffset);	1214	svptr = SvGROW (data, len + dataoffset + 1);
1086	}	1215	}
1087
1088	if (length < 0)
1089	croak ("length must not be negative");
1090		1216
1091	{	1217	{
1092	dREQ;	1218	dREQ;
1093		1219
1094	req->type = ix;	1220	req->type = ix;
1095	req->fh = newSVsv (fh);	1221	req->sv1 = newSVsv (fh);
1096	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1222	req->int1 = fd;
1097	: IoOFP (sv_2io (fh)));	1223	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1098	req->offset = offset;	1224	req->size = len;
1099	req->length = length;
1100	req->data = SvREFCNT_inc (data);	1225	req->sv2 = SvREFCNT_inc (data);
1101	req->dataptr = (char *)svptr + dataoffset;	1226	req->ptr2 = (char *)svptr + dataoffset;
		1227	req->stroffset = dataoffset;
1102		1228
1103	if (!SvREADONLY (data))	1229	if (!SvREADONLY (data))
1104	{	1230	{
1105	SvREADONLY_on (data);	1231	SvREADONLY_on (data);
1106	req->data2ptr = (void *)data;	1232	req->flags |= FLAG_SV2_RO_OFF;
1107	}	1233	}
1108		1234
1109	REQ_SEND;	1235	REQ_SEND;
1110	}	1236	}
1111	}	1237	}
1112		1238
1113	void	1239	void
1114	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1240	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1115	SV * out_fh	1241	ALIAS:
1116	SV * in_fh	1242	aio_readlink = EIO_READLINK
1117	UV in_offset	1243	aio_realpath = EIO_REALPATH
1118	UV length
1119	SV * callback
1120	PROTOTYPE: $$$$;$
1121	PPCODE:	1244	PPCODE:
1122	{	1245	{
		1246	dREQ;
		1247
		1248	req->type = ix;
		1249	req_set_path1 (req, pathname);
		1250
		1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int ifd = s_fileno_croak (in_fh , 0);
		1259	int ofd = s_fileno_croak (out_fh, 1);
1123	dREQ;	1260	dREQ;
1124		1261
1125	req->type = REQ_SENDFILE;	1262	req->type = EIO_SENDFILE;
1126	req->fh = newSVsv (out_fh);	1263	req->sv1 = newSVsv (out_fh);
1127	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1264	req->int1 = ofd;
1128	req->fh2 = newSVsv (in_fh);	1265	req->sv2 = newSVsv (in_fh);
1129	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1266	req->int2 = ifd;
1130	req->offset = in_offset;	1267	req->offs = in_offset;
1131	req->length = length;	1268	req->size = length;
1132		1269
1133	REQ_SEND;	1270	REQ_SEND;
1134	}	1271	}
1135		1272
1136	void	1273	void
1137	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1274	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	UV offset
1140	IV length
1141	SV * callback
1142	PROTOTYPE: $$$;$
1143	PPCODE:	1275	PPCODE:
1144	{	1276	{
		1277	int fd = s_fileno_croak (fh, 0);
1145	dREQ;	1278	dREQ;
1146		1279
1147	req->type = REQ_READAHEAD;	1280	req->type = EIO_READAHEAD;
1148	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1149	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1282	req->int1 = fd;
1150	req->offset = offset;	1283	req->offs = offset;
1151	req->length = length;	1284	req->size = length;
1152		1285
1153	REQ_SEND;	1286	REQ_SEND;
1154	}	1287	}
1155		1288
1156	void	1289	void
1157	aio_stat (fh_or_path,callback=&PL_sv_undef)	1290	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1158	SV * fh_or_path
1159	SV * callback
1160	ALIAS:	1291	ALIAS:
1161	aio_stat = REQ_STAT	1292	aio_stat = EIO_STAT
1162	aio_lstat = REQ_LSTAT	1293	aio_lstat = EIO_LSTAT
		1294	aio_statvfs = EIO_STATVFS
1163	PPCODE:	1295	PPCODE:
1164	{	1296	{
1165	dREQ;	1297	dREQ;
1166		1298
1167	New (0, req->statdata, 1, Stat_t);
1168	if (!req->statdata)
1169	{
1170	req_free (req);
1171	croak ("out of memory during aio_req->statdata allocation");
1172	}
1173
1174	if (SvPOK (fh_or_path))
1175	{
1176	req->type = ix;
1177	req->data = newSVsv (fh_or_path);
1178	req->dataptr = SvPVbyte_nolen (req->data);
1179	}
1180	else
1181	{
1182	req->type = REQ_FSTAT;
1183	req->fh = newSVsv (fh_or_path);	1299	req->sv1 = newSVsv (fh_or_path);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1300	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1185	}
1186
1187	REQ_SEND;	1301	REQ_SEND;
1188	}	1302	}
1189		1303
		1304	UV
		1305	major (UV dev)
		1306	ALIAS:
		1307	minor = 1
		1308	CODE:
		1309	RETVAL = ix ? major (dev) : minor (dev);
		1310	OUTPUT:
		1311	RETVAL
		1312
		1313	UV
		1314	makedev (UV maj, UV min)
		1315	CODE:
		1316	RETVAL = makedev (maj, min);
		1317	OUTPUT:
		1318	RETVAL
		1319
1190	void	1320	void
		1321	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1322	PPCODE:
		1323	{
		1324	dREQ;
		1325
		1326	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1327	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1328	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1329
		1330	REQ_SEND;
		1331	}
		1332
		1333	void
		1334	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1335	PPCODE:
		1336	{
		1337	dREQ;
		1338
		1339	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1340	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1341
		1342	REQ_SEND;
		1343	}
		1344
		1345	void
		1346	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1347	PPCODE:
		1348	{
		1349	dREQ;
		1350
		1351	req->int2 = mode;
		1352	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1359	PPCODE:
		1360	{
		1361	dREQ;
		1362
		1363	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1364	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1365	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1366
		1367	REQ_SEND;
		1368	}
		1369
		1370	void
		1371	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1372	PPCODE:
		1373	{
		1374	dREQ;
		1375
		1376	req->type = EIO_READDIR;
		1377	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1378
		1379	if (flags & EIO_READDIR_DENTS)
		1380	req->int1 |= EIO_READDIR_CUSTOM2;
		1381
		1382	req_set_path1 (req, pathname);
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	dREQ;
		1392
		1393	req->type = EIO_MKDIR;
		1394	req->int2 = mode;
		1395	req_set_path1 (req, pathname);
		1396
		1397	REQ_SEND;
		1398	}
		1399
		1400	void
1191	aio_unlink (pathname,callback=&PL_sv_undef)	1401	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1192	SV * pathname
1193	SV * callback
1194	ALIAS:	1402	ALIAS:
1195	aio_unlink = REQ_UNLINK	1403	aio_unlink = EIO_UNLINK
1196	aio_rmdir = REQ_RMDIR	1404	aio_rmdir = EIO_RMDIR
1197	aio_readdir = REQ_READDIR	1405	aio_readdir = EIO_READDIR
1198	PPCODE:	1406	PPCODE:
1199	{	1407	{
1200	dREQ;	1408	dREQ;
1201		1409
1202	req->type = ix;	1410	req->type = ix;
1203	req->data = newSVsv (pathname);	1411	req_set_path1 (req, pathname);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1418	ALIAS:
		1419	aio_link = EIO_LINK
		1420	aio_symlink = EIO_SYMLINK
		1421	aio_rename = EIO_RENAME
		1422	PPCODE:
		1423	{
		1424	dREQ;
		1425	eio_wd wd2 = 0;
		1426
		1427	req->type = ix;
		1428	req_set_path1 (req, oldpath);
		1429	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1430	req->int3 = (long)wd2;
1205		1431
1206	REQ_SEND;	1432	REQ_SEND;
1207	}	1433	}
1208		1434
1209	void	1435	void
1210	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1436	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1211	SV * oldpath
1212	SV * newpath
1213	SV * callback
1214	ALIAS:
1215	aio_link = REQ_LINK
1216	aio_symlink = REQ_SYMLINK
1217	aio_rename = REQ_RENAME
1218	PPCODE:	1437	PPCODE:
1219	{	1438	{
1220	dREQ;	1439	dREQ;
1221		1440
1222	req->type = ix;	1441	req->type = EIO_MKNOD;
1223	req->fh = newSVsv (oldpath);	1442	req->int2 = (mode_t)mode;
1224	req->data2ptr = SvPVbyte_nolen (req->fh);	1443	req->offs = dev;
1225	req->data = newSVsv (newpath);	1444	req_set_path1 (req, pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);
1227		1445
1228	REQ_SEND;	1446	REQ_SEND;
1229	}	1447	}
1230		1448
1231	void	1449	void
		1450	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1451	ALIAS:
		1452	aio_mtouch = EIO_MTOUCH
		1453	aio_msync = EIO_MSYNC
		1454	PPCODE:
		1455	{
		1456	STRLEN svlen;
		1457	char *svptr = SvPVbyte (data, svlen);
		1458	UV len = SvUV (length);
		1459
		1460	if (offset < 0)
		1461	offset += svlen;
		1462
		1463	if (offset < 0 || offset > svlen)
		1464	croak ("offset outside of scalar");
		1465
		1466	if (!SvOK (length) || len + offset > svlen)
		1467	len = svlen - offset;
		1468
		1469	{
		1470	dREQ;
		1471
		1472	req->type = ix;
		1473	req->sv2 = SvREFCNT_inc (data);
		1474	req->ptr2 = (char *)svptr + offset;
		1475	req->size = len;
		1476	req->int1 = flags;
		1477
		1478	REQ_SEND;
		1479	}
		1480	}
		1481
		1482	void
		1483	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1484	PPCODE:
		1485	{
		1486	STRLEN svlen;
		1487	char *svptr = SvPVbyte (data, svlen);
		1488	UV len = SvUV (length);
		1489
		1490	if (offset < 0)
		1491	offset += svlen;
		1492
		1493	if (offset < 0 || offset > svlen)
		1494	croak ("offset outside of scalar");
		1495
		1496	if (!SvOK (length) || len + offset > svlen)
		1497	len = svlen - offset;
		1498
		1499	{
		1500	dREQ;
		1501
		1502	req->type = EIO_MLOCK;
		1503	req->sv2 = SvREFCNT_inc (data);
		1504	req->ptr2 = (char *)svptr + offset;
		1505	req->size = len;
		1506
		1507	REQ_SEND;
		1508	}
		1509	}
		1510
		1511	void
		1512	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1513	PPCODE:
		1514	{
		1515	dREQ;
		1516
		1517	req->type = EIO_MLOCKALL;
		1518	req->int1 = flags;
		1519
		1520	REQ_SEND;
		1521	}
		1522
		1523	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1524	aio_busy (double delay, SV *callback=&PL_sv_undef)
1233	double delay
1234	SV * callback
1235	PPCODE:	1525	PPCODE:
1236	{	1526	{
1237	dREQ;	1527	dREQ;
1238		1528
1239	req->type = REQ_SLEEP;	1529	req->type = EIO_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	1530	req->nv1 = delay < 0. ? 0. : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1242		1531
1243	REQ_SEND;	1532	REQ_SEND;
1244	}	1533	}
1245		1534
1246	void	1535	void
1247	aio_group (callback=&PL_sv_undef)	1536	aio_group (SV *callback=&PL_sv_undef)
1248	SV * callback
1249	PROTOTYPE: ;$
1250	PPCODE:	1537	PPCODE:
1251	{	1538	{
1252	dREQ;	1539	dREQ;
1253		1540
1254	req->type = REQ_GROUP;	1541	req->type = EIO_GROUP;
		1542
1255	req_send (req);	1543	req_submit (req);
1256
1257	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1544	XPUSHs (req_sv (req, aio_grp_stash));
1258	}	1545	}
1259		1546
1260	void	1547	void
1261	aio_nop (callback=&PL_sv_undef)	1548	aio_nop (SV *callback=&PL_sv_undef)
1262	SV * callback	1549	ALIAS:
		1550	aio_nop = EIO_NOP
		1551	aio_sync = EIO_SYNC
1263	PPCODE:	1552	PPCODE:
1264	{	1553	{
1265	dREQ;	1554	dREQ;
1266		1555
1267	req->type = REQ_NOP;	1556	req->type = ix;
1268		1557
1269	REQ_SEND;	1558	REQ_SEND;
1270	}	1559	}
1271		1560
1272	#if 0	1561	int
1273		1562	aioreq_pri (int pri = 0)
1274	void
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1563	CODE:
		1564	RETVAL = next_pri;
		1565	if (items > 0)
		1566	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1567	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1568	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1569	next_pri = pri;
		1570	}
		1571	OUTPUT:
		1572	RETVAL
1280		1573
1281	#endif	1574	void
		1575	aioreq_nice (int nice = 0)
		1576	CODE:
		1577	nice = next_pri - nice;
		1578	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1579	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1580	next_pri = nice;
1282		1581
1283	void	1582	void
1284	flush ()	1583	flush ()
1285	PROTOTYPE:
1286	CODE:	1584	CODE:
1287	while (nreqs)	1585	while (eio_nreqs ())
1288	{	1586	{
1289	poll_wait ();	1587	poll_wait ();
1290	poll_cb ();	1588	poll_cb ();
1291	}	1589	}
1292		1590
1293	void
1294	poll()
1295	PROTOTYPE:
1296	CODE:
1297	if (nreqs)
1298	{
1299	poll_wait ();
1300	poll_cb ();
1301	}
1302
1303	int	1591	int
1304	poll_fileno()	1592	poll ()
1305	PROTOTYPE:
1306	CODE:	1593	CODE:
1307	RETVAL = respipe [0];	1594	poll_wait ();
1308	OUTPUT:
1309	RETVAL
1310
1311	int
1312	poll_cb(...)
1313	PROTOTYPE:
1314	CODE:
1315	RETVAL = poll_cb ();	1595	RETVAL = poll_cb ();
1316	OUTPUT:	1596	OUTPUT:
1317	RETVAL	1597	RETVAL
1318		1598
1319	void
1320	poll_wait()
1321	PROTOTYPE:
1322	CODE:
1323	if (nreqs)
1324	poll_wait ();
1325
1326	int	1599	int
1327	nreqs()	1600	poll_fileno ()
1328	PROTOTYPE:
1329	CODE:	1601	CODE:
1330	RETVAL = nreqs;	1602	RETVAL = s_epipe_fd (&respipe);
1331	OUTPUT:	1603	OUTPUT:
1332	RETVAL	1604	RETVAL
1333		1605
		1606	int
		1607	poll_cb (...)
		1608	PROTOTYPE:
		1609	CODE:
		1610	RETVAL = poll_cb ();
		1611	OUTPUT:
		1612	RETVAL
		1613
		1614	void
		1615	poll_wait ()
		1616	CODE:
		1617	poll_wait ();
		1618
		1619	int
		1620	nreqs ()
		1621	CODE:
		1622	RETVAL = eio_nreqs ();
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
		1627	nready ()
		1628	CODE:
		1629	RETVAL = eio_nready ();
		1630	OUTPUT:
		1631	RETVAL
		1632
		1633	int
		1634	npending ()
		1635	CODE:
		1636	RETVAL = eio_npending ();
		1637	OUTPUT:
		1638	RETVAL
		1639
		1640	int
		1641	nthreads ()
		1642	CODE:
		1643	RETVAL = eio_nthreads ();
		1644	OUTPUT:
		1645	RETVAL
		1646
		1647	int
		1648	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1649	CODE:
		1650	RETVAL = posix_fadvise (fh, offset, length, advice);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	IV
		1655	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1656	CODE:
		1657	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1658	OUTPUT:
		1659	RETVAL
		1660
		1661	void
		1662	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1663	PPCODE:
		1664	sv_unmagic (scalar, MMAP_MAGIC);
		1665	{
		1666	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1667	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1668	if (addr == (void *)-1)
		1669	XSRETURN_NO;
		1670
		1671	sv_force_normal (scalar);
		1672
		1673	/* we store the length in mg_obj, as namlen is I32 :/ */
		1674	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1675	->mg_obj = (SV *)length;
		1676
		1677	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1678
		1679	if (!(prot & PROT_WRITE))
		1680	SvREADONLY_on (scalar);
		1681
		1682	if (SvLEN (scalar))
		1683	Safefree (SvPVX (scalar));
		1684
		1685	SvPVX (scalar) = (char *)addr;
		1686	SvCUR_set (scalar, length);
		1687	SvLEN_set (scalar, 0);
		1688	SvPOK_only (scalar);
		1689
		1690	XSRETURN_YES;
		1691	}
		1692
		1693	void
		1694	munmap (SV *scalar)
		1695	CODE:
		1696	sv_unmagic (scalar, MMAP_MAGIC);
		1697
		1698	int
		1699	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1700	ALIAS:
		1701	mprotect = 1
		1702	CODE:
		1703	{
		1704	STRLEN svlen;
		1705	void *addr = SvPVbyte (scalar, svlen);
		1706	size_t len = SvUV (length);
		1707
		1708	if (offset < 0)
		1709	offset += svlen;
		1710
		1711	if (offset < 0 || offset > svlen)
		1712	croak ("offset outside of scalar");
		1713
		1714	if (!SvOK (length) || len + offset > svlen)
		1715	len = svlen - offset;
		1716
		1717	addr = (void *)(((intptr_t)addr) + offset);
		1718	eio_page_align (&addr, &len);
		1719
		1720	switch (ix)
		1721	{
		1722	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1723	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1724	}
		1725	}
		1726	OUTPUT:
		1727	RETVAL
		1728
		1729	int
		1730	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1731	CODE:
		1732	{
		1733	STRLEN svlen;
		1734	void *addr = SvPVbyte (scalar, svlen);
		1735	size_t len = SvUV (length);
		1736
		1737	if (offset < 0)
		1738	offset += svlen;
		1739
		1740	if (offset < 0 || offset > svlen)
		1741	croak ("offset outside of scalar");
		1742
		1743	if (!SvOK (length) || len + offset > svlen)
		1744	len = svlen - offset;
		1745
		1746	addr = (void *)(((intptr_t)addr) + offset);
		1747	eio_page_align (&addr, &len);
		1748	#if _POSIX_MEMLOCK_RANGE
		1749	RETVAL = munlock (addr, len);
		1750	#else
		1751	RETVAL = ((errno = ENOSYS), -1);
		1752	#endif
		1753	}
		1754	OUTPUT:
		1755	RETVAL
		1756
		1757	int
		1758	munlockall ()
		1759	CODE:
		1760	#if _POSIX_MEMLOCK
		1761	munlockall ();
		1762	#else
		1763	RETVAL = -1;
		1764	errno = ENOSYS;
		1765	#endif
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769	void _on_next_submit (SV *cb)
		1770	CODE:
		1771	SvREFCNT_dec (on_next_submit);
		1772	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1773
1334	PROTOTYPES: DISABLE	1774	PROTOTYPES: DISABLE
1335		1775
		1776	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1777
		1778	BOOT:
		1779	{
		1780	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1781	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1782	}
		1783
		1784	void
		1785	DESTROY (SV *self)
		1786	CODE:
		1787	{
		1788	aio_wd wd = SvAIO_WD (self);
		1789	#if HAVE_AT
		1790	SV *callback = &PL_sv_undef;
		1791	dREQ; /* clobbers next_pri :/ */
		1792	req->type = EIO_WD_CLOSE;
		1793	req->wd = wd;
		1794	REQ_SEND;
		1795	#else
		1796	eio_wd_close_sync (wd);
		1797	#endif
		1798	}
		1799
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1800	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1801
1338	void	1802	void
1339	cancel (aio_req_ornot req)	1803	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1804	CODE:
1342	req_cancel (req);	1805	eio_cancel (req);
1343		1806
1344	void	1807	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1808	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1346	CODE:	1809	PPCODE:
		1810	{
		1811	if (GIMME_V != G_VOID)
		1812	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1813
		1814	if (items > 1)
		1815	{
		1816	SV *cb_cv =get_cb (callback);
		1817
1347	SvREFCNT_dec (req->callback);	1818	SvREFCNT_dec (req->callback);
1348	req->callback = newSVsv (callback);	1819	req->callback = SvREFCNT_inc (cb_cv);
		1820	}
		1821	}
1349		1822
1350	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1823	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1351		1824
1352	void	1825	void
1353	add (aio_req grp, ...)	1826	add (aio_req grp, ...)
1354	PPCODE:	1827	PPCODE:
1355	{	1828	{
1356	int i;	1829	int i;
1357	aio_req req;
1358		1830
1359	if (grp->fd == 2)	1831	if (grp->int1 == 2)
1360	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1832	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1361		1833
1362	for (i = 1; i < items; ++i )	1834	for (i = 1; i < items; ++i )
1363	{	1835	{
		1836	aio_req req;
		1837
1364	if (GIMME_V != G_VOID)	1838	if (GIMME_V != G_VOID)
1365	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1839	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1366		1840
1367	req = SvAIO_REQ (ST (i));	1841	req = SvAIO_REQ (ST (i));
1368		1842
1369	if (req)	1843	if (req)
1370	{	1844	eio_grp_add (grp, req);
1371	++grp->length;
1372	req->grp = grp;
1373
1374	req->grp_prev = 0;
1375	req->grp_next = grp->grp_first;
1376
1377	if (grp->grp_first)
1378	grp->grp_first->grp_prev = req;
1379
1380	grp->grp_first = req;
1381	}
1382	}	1845	}
1383	}	1846	}
		1847
		1848	void
		1849	cancel_subs (aio_req_ornot req)
		1850	CODE:
		1851	req_cancel_subs (req);
1384		1852
1385	void	1853	void
1386	result (aio_req grp, ...)	1854	result (aio_req grp, ...)
1387	CODE:	1855	CODE:
1388	{	1856	{
1389	int i;	1857	int i;
		1858	AV *av;
		1859
		1860	grp->errorno = errno;
		1861
1390	AV *av = newAV ();	1862	av = newAV ();
		1863	av_extend (av, items - 1);
1391		1864
1392	for (i = 1; i < items; ++i )	1865	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1866	av_push (av, newSVsv (ST (i)));
1394		1867
1395	SvREFCNT_dec (grp->data);	1868	SvREFCNT_dec (grp->sv1);
1396	grp->data = (SV *)av;	1869	grp->sv1 = (SV *)av;
1397	}	1870	}
1398		1871
1399	void	1872	void
		1873	errno (aio_req grp, int errorno = errno)
		1874	CODE:
		1875	grp->errorno = errorno;
		1876
		1877	void
1400	feed_limit (aio_req grp, int limit)	1878	limit (aio_req grp, int limit)
1401	CODE:	1879	CODE:
1402	grp->fd2 = limit;	1880	eio_grp_limit (grp, limit);
1403	aio_grp_feed (grp);
1404		1881
1405	void	1882	void
1406	feed (aio_req grp, SV *callback=&PL_sv_undef)	1883	feed (aio_req grp, SV *callback=&PL_sv_undef)
1407	CODE:	1884	CODE:
1408	{	1885	{
1409	SvREFCNT_dec (grp->fh2);	1886	SvREFCNT_dec (grp->sv2);
1410	grp->fh2 = newSVsv (callback);	1887	grp->sv2 = newSVsv (callback);
		1888	grp->feed = aio_grp_feed;
1411		1889
1412	if (grp->fd2 <= 0)	1890	if (grp->int2 <= 0)
1413	grp->fd2 = 2;	1891	grp->int2 = 2;
1414		1892
1415	aio_grp_feed (grp);	1893	eio_grp_limit (grp, grp->int2);
1416	}	1894	}
1417		1895

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