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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.62 by root, Mon Oct 23 22:45:18 2006 UTC vs.
Revision 1.202 by root, Thu Sep 29 10:01:35 2011 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# 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
31	# include <sys/socket.h>	69	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# 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
34	# else	295	# else
35	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	297	# endif
37	#endif	298	#endif
38		299	#ifndef MAP_HUGETLB
39	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
40	#ifndef NAME_MAX
41	# define NAME_MAX 4096
42	#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
43		314
44	#if __ia64	315	#ifndef makedev
45	# define STACKSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
46	#else	317	#endif
47	# 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)
48	#endif	327	#endif
49		328
50	enum {	329	enum {
51	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
52	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,
62	};	331	};
63		332
64	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"
66
67	typedef struct aio_cb
68	{
69	struct aio_cb *volatile next;
70
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	Stat_t *statdata;
75	off_t offset;
76	size_t length;
77	ssize_t result;
78
79	STRLEN dataoffset;
80	int type;
81	int fd, fd2;
82	int errorno;
83	mode_t mode; /* open */
84
85	unsigned char flags;
86	unsigned char pri;
87
88	SV *self; /* the perl counterpart of this request, if any */
89	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
98		336
99	enum {	337	static SV *on_next_submit;
100	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
101	PRI_MAX = 4,
102
103	DEFAULT_PRI = 0,
104	PRI_BIAS = -PRI_MIN,
105	};
106
107	static int next_pri = DEFAULT_PRI + PRI_BIAS;
108
109	static int started, wanted;
110	static volatile int nreqs;
111	static int max_outstanding = 1<<30;	339	static int max_outstanding;
112	static int respipe [2];
113		340
114	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	341	static s_epipe respipe;
115	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
116	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
117		342
118	static volatile aio_req reqs, reqe; /* queue start, queue end */	343	static void req_destroy (aio_req req);
119	static volatile aio_req ress, rese; /* queue start, queue end */
120
121	static void req_invoke (aio_req req);	344	static void req_cancel (aio_req req);
122	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	}
123		359
124	/* must be called at most once */	360	/* must be called at most once */
125	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
126	{	363	{
127	if (!req->self)	364	if (!req->self)
128	{	365	{
129	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
130	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
131	}	368	}
132		369
133	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
134	}	371	}
135		372
136	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)
137	{	381	{
138	MAGIC *mg;	382	MAGIC *mg;
139		383
140	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")))
141	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
142		389
143	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
144		391
145	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
146	}	393	}
147		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
148	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
149	{	408	{
150	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	409	if (grp->sv2 && SvOK (grp->sv2))
151	{	410	{
152	int old_len = grp->length;	411	dSP;
153		412
154	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))
155	{	462	{
156	dSP;	463	sv_result = sv_result_cache; sv_result_cache = 0;
157		464	SvIV_set (sv_result, req->result);
158	ENTER;	465	SvIOK_only (sv_result);
159	SAVETMPS;
160	PUSHMARK (SP);
161	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
162	PUTBACK;
163	call_sv (grp->fh2, G_VOID | G_EVAL);
164	SPAGAIN;
165	FREETMPS;
166	LEAVE;
167	}	466	}
168		467	else
169	/* stop if no progress has been made */
170	if (old_len == grp->length)
171	{	468	{
172	SvREFCNT_dec (grp->fh2);	469	sv_result = newSViv (req->result);
173	grp->fh2 = 0;	470	SvREADONLY_on (sv_result);
174	break;
175	}	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;
176	}	674	}
177	}
178		675
179	static void aio_grp_dec (aio_req grp)	676	return !!SvTRUE (ERRSV);
180	{
181	--grp->length;
182
183	/* call feeder, if applicable */
184	aio_grp_feed (grp);
185
186	/* finish, if done */
187	if (!grp->length && grp->fd)
188	{
189	req_invoke (grp);
190	req_free (grp);
191	}
192	}	677	}
193		678
194	static void poll_wait ()	679	static void
		680	req_destroy (aio_req req)
195	{	681	{
196	fd_set rfd;
197
198	while (nreqs)
199	{
200	aio_req req;
201	pthread_mutex_lock (&reslock);
202	req = ress;
203	pthread_mutex_unlock (&reslock);
204
205	if (req)
206	return;
207
208	FD_ZERO(&rfd);
209	FD_SET(respipe [0], &rfd);
210
211	select (respipe [0] + 1, &rfd, 0, 0, 0);
212	}
213	}
214
215	static void req_invoke (aio_req req)
216	{
217	dSP;
218	int errorno = errno;
219
220	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
221	return;
222
223	errno = req->errorno;
224
225	ENTER;
226	SAVETMPS;
227	PUSHMARK (SP);
228	EXTEND (SP, 1);
229
230	switch (req->type)
231	{
232	case REQ_READDIR:
233	{
234	SV *rv = &PL_sv_undef;
235
236	if (req->result >= 0)
237	{
238	char *buf = req->data2ptr;
239	AV *av = newAV ();
240
241	while (req->result)
242	{
243	SV *sv = newSVpv (buf, 0);
244
245	av_push (av, sv);
246	buf += SvCUR (sv) + 1;
247	req->result--;
248	}
249
250	rv = sv_2mortal (newRV_noinc ((SV *)av));
251	}
252
253	PUSHs (rv);
254	}
255	break;
256
257	case REQ_OPEN:
258	{
259	/* convert fd to fh */
260	SV *fh;
261
262	PUSHs (sv_2mortal (newSViv (req->result)));
263	PUTBACK;
264	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
265	SPAGAIN;
266
267	fh = SvREFCNT_inc (POPs);
268
269	PUSHMARK (SP);
270	XPUSHs (sv_2mortal (fh));
271	}
272	break;
273
274	case REQ_GROUP:
275	req->fd = 2; /* mark group as finished */
276
277	if (req->data)
278	{
279	int i;
280	AV *av = (AV *)req->data;
281
282	EXTEND (SP, AvFILL (av) + 1);
283	for (i = 0; i <= AvFILL (av); ++i)
284	PUSHs (*av_fetch (av, i, 0));
285	}
286	break;
287
288	case REQ_NOP:
289	case REQ_SLEEP:
290	break;
291
292	default:
293	PUSHs (sv_2mortal (newSViv (req->result)));
294	break;
295	}
296
297
298	PUTBACK;
299	call_sv (req->callback, G_VOID | G_EVAL);
300	SPAGAIN;
301
302	FREETMPS;
303	LEAVE;
304
305	errno = errorno;
306
307	if (SvTRUE (ERRSV))
308	{
309	req_free (req);
310	croak (0);
311	}
312	}
313
314	static void req_free (aio_req req)
315	{
316	if (req->grp)
317	{
318	aio_req grp = req->grp;
319
320	/* unlink request */
321	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
322	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
323
324	if (grp->grp_first == req)
325	grp->grp_first = req->grp_next;
326
327	aio_grp_dec (grp);
328	}
329
330	if (req->self)	682	if (req->self)
331	{	683	{
332	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
333	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
334	}	686	}
335		687
336	SvREFCNT_dec (req->data);
337	SvREFCNT_dec (req->fh);	688	SvREFCNT_dec (req->sv1);
338	SvREFCNT_dec (req->fh2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
339	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
340	Safefree (req->statdata);
341
342	if (req->type == REQ_READDIR && req->result >= 0)
343	free (req->data2ptr);
344		693
345	Safefree (req);	694	Safefree (req);
346	}	695	}
347		696
348	static void req_cancel (aio_req req)	697	static void
		698	req_cancel_subs (aio_req grp)
349	{	699	{
350	req->flags |= FLAG_CANCELLED;
351
352	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 ())
353	{	720	{
354	aio_req sub;	721	int size;
355		722
356	for (sub = req->grp_first; sub; sub = sub->grp_next)	723	X_LOCK (reslock);
357	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);
358	}	733	}
359	}	734	}
360		735
361	static int poll_cb ()	736	static int
		737	poll_cb (void)
362	{	738	{
363	dSP;
364	int count = 0;
365	int do_croak = 0;
366	aio_req req;
367
368	for (;;)	739	for (;;)
369	{	740	{
370	pthread_mutex_lock (&reslock);	741	int res = eio_poll ();
371	req = ress;
372		742
373	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))
374	{	852	{
375	ress = req->next;	853	*wd = SvAIO_WD (wdob);
376		854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
377	if (!ress)
378	{
379	/* read any signals sent by the worker threads */
380	char buf [32];
381	while (read (respipe [0], buf, 32) == 32)
382	;
383
384	rese = 0;
385	}
386	}
387
388	pthread_mutex_unlock (&reslock);
389
390	if (!req)
391	break;
392
393	--nreqs;
394
395	if (req->type == REQ_QUIT)
396	started--;
397	else if (req->type == REQ_GROUP && req->length)
398	{
399	req->fd = 1; /* mark request as delayed */
400	continue;
401	}	855	}
402	else	856	else
403	{	857	*wd = EIO_INVALID_WD;
404	if (req->type == REQ_READ)
405	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
406
407	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
408	SvREADONLY_off (req->data);
409
410	if (req->statdata)
411	{
412	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
413	PL_laststatval = req->result;
414	PL_statcache = *(req->statdata);
415	}
416
417	req_invoke (req);
418
419	count++;
420	}
421
422	req_free (req);
423	}	858	}
424		859
425	return count;	860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
426	}	862	}
427		863
428	static void *aio_proc(void *arg);	864	static void ecb_noinline
429		865	req_set_path1 (aio_req req, SV *path)
430	static void start_thread (void)
431	{	866	{
432	sigset_t fullsigset, oldsigset;	867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
433	pthread_t tid;
434	pthread_attr_t attr;
435
436	pthread_attr_init (&attr);
437	pthread_attr_setstacksize (&attr, STACKSIZE);
438	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
439
440	sigfillset (&fullsigset);
441	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
442
443	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
444	started++;
445
446	sigprocmask (SIG_SETMASK, &oldsigset, 0);
447	}	868	}
448		869
449	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)
450	{	872	{
451	while (started < wanted && nreqs >= started)	873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
452	start_thread ();
453		874
454	++nreqs;	875	switch (SvTYPE (rv))
455
456	pthread_mutex_lock (&reqlock);
457
458	req->next = 0;
459
460	if (reqe)
461	{	876	{
462	reqe->next = req;	877	case SVt_PVIO:
463	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;
464	}	889	}
465	else
466	reqe = reqs = req;
467
468	pthread_cond_signal (&reqwait);
469	pthread_mutex_unlock (&reqlock);
470
471	if (nreqs > max_outstanding)
472	for (;;)
473	{
474	poll_cb ();
475
476	if (nreqs <= max_outstanding)
477	break;
478
479	poll_wait ();
480	}
481	}	890	}
482		891
483	static void end_thread (void)	892	XS(boot_IO__AIO) ecb_cold;
484	{
485	aio_req req;
486	Newz (0, req, 1, aio_cb);
487	req->type = REQ_QUIT;
488		893
489	req_send (req);	894	MODULE = IO::AIO PACKAGE = IO::AIO
490	}
491		895
492	static void min_parallel (int nthreads)	896	PROTOTYPES: ENABLE
493	{
494	if (wanted < nthreads)
495	wanted = nthreads;
496	}
497		897
498	static void max_parallel (int nthreads)	898	BOOT:
499	{	899	{
500	int cur = started;	900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907	const_iv (EXDEV)
		908	const_iv (ENOSYS)
		909	const_iv (O_RDONLY)
		910	const_iv (O_WRONLY)
		911	const_iv (O_RDWR)
		912	const_iv (O_CREAT)
		913	const_iv (O_TRUNC)
		914	const_iv (O_EXCL)
		915	const_iv (O_APPEND)
501		916
502	if (wanted > nthreads)	917	const_iv (O_ASYNC)
503	wanted = nthreads;	918	const_iv (O_DIRECT)
		919	const_iv (O_NOATIME)
504		920
505	while (cur > wanted)	921	const_iv (O_CLOEXEC)
506	{	922	const_iv (O_NOCTTY)
507	end_thread ();	923	const_iv (O_NOFOLLOW)
508	cur--;	924	const_iv (O_NONBLOCK)
509	}	925	const_iv (O_EXEC)
		926	const_iv (O_SEARCH)
		927	const_iv (O_DIRECTORY)
		928	const_iv (O_DSYNC)
		929	const_iv (O_RSYNC)
		930	const_iv (O_SYNC)
		931	const_iv (O_TTY_INIT)
510		932
511	while (started > wanted)	933	const_iv (S_IFIFO)
512	{	934	const_iv (S_IFCHR)
513	poll_wait ();	935	const_iv (S_IFBLK)
514	poll_cb ();	936	const_iv (S_IFLNK)
515	}	937	const_iv (S_IFREG)
516	}	938	const_iv (S_IFDIR)
		939	const_iv (S_IFWHT)
		940	const_iv (S_IFSOCK)
		941	const_iv (S_IFMT)
517		942
518	static void create_pipe ()	943	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
519	{	944	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
520	if (pipe (respipe))	945	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
521	croak ("unable to initialize result pipe");	946	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		947	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		948	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
522		949
523	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	950	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
524	croak ("cannot set result pipe to nonblocking mode");	951	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		952	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		953	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		954	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
525		955
526	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	956	const_iv (ST_RDONLY)
527	croak ("cannot set result pipe to nonblocking mode");	957	const_iv (ST_NOSUID)
528	}	958	const_iv (ST_NODEV)
		959	const_iv (ST_NOEXEC)
		960	const_iv (ST_SYNCHRONOUS)
		961	const_iv (ST_MANDLOCK)
		962	const_iv (ST_WRITE)
		963	const_iv (ST_APPEND)
		964	const_iv (ST_IMMUTABLE)
		965	const_iv (ST_NOATIME)
		966	const_iv (ST_NODIRATIME)
		967	const_iv (ST_RELATIME)
529		968
530	/*****************************************************************************/	969	const_iv (PROT_NONE)
531	/* work around various missing functions */	970	const_iv (PROT_EXEC)
		971	const_iv (PROT_READ)
		972	const_iv (PROT_WRITE)
532		973
533	#if !HAVE_PREADWRITE	974	/*const_iv (MAP_FIXED)*/
534	# define pread aio_pread	975	const_iv (MAP_PRIVATE)
535	# define pwrite aio_pwrite	976	const_iv (MAP_SHARED)
		977	const_iv (MAP_ANONYMOUS)
536		978
537	/*	979	/* linuxish */
538	* make our pread/pwrite safe against themselves, but not against	980	const_iv (MAP_HUGETLB)
539	* normal read/write by using a mutex. slows down execution a lot,	981	const_iv (MAP_LOCKED)
540	* but that's your problem, not mine.	982	const_iv (MAP_NORESERVE)
541	*/	983	const_iv (MAP_POPULATE)
542	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	984	const_iv (MAP_NONBLOCK)
543		985
544	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	986	const_eio (MCL_FUTURE)
545	{	987	const_eio (MCL_CURRENT)
546	ssize_t res;
547	off_t ooffset;
548		988
549	pthread_mutex_lock (&preadwritelock);	989	const_eio (MS_ASYNC)
550	ooffset = lseek (fd, 0, SEEK_CUR);	990	const_eio (MS_INVALIDATE)
551	lseek (fd, offset, SEEK_SET);	991	const_eio (MS_SYNC)
552	res = read (fd, buf, count);
553	lseek (fd, ooffset, SEEK_SET);
554	pthread_mutex_unlock (&preadwritelock);
555		992
556	return res;	993	const_eio (MT_MODIFY)
557	}
558		994
559	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	995	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
560	{	996	const_eio (SYNC_FILE_RANGE_WRITE)
561	ssize_t res;	997	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
562	off_t ooffset;
563		998
564	pthread_mutex_lock (&preadwritelock);	999	const_eio (FALLOC_FL_KEEP_SIZE)
565	ooffset = lseek (fd, 0, SEEK_CUR);
566	lseek (fd, offset, SEEK_SET);
567	res = write (fd, buf, count);
568	lseek (fd, offset, SEEK_SET);
569	pthread_mutex_unlock (&preadwritelock);
570		1000
571	return res;	1001	const_eio (READDIR_DENTS)
572	}	1002	const_eio (READDIR_DIRS_FIRST)
573	#endif	1003	const_eio (READDIR_STAT_ORDER)
		1004	const_eio (READDIR_FOUND_UNKNOWN)
574		1005
575	#if !HAVE_FDATASYNC	1006	const_eio (DT_UNKNOWN)
576	# define fdatasync fsync	1007	const_eio (DT_FIFO)
577	#endif	1008	const_eio (DT_CHR)
578		1009	const_eio (DT_DIR)
579	#if !HAVE_READAHEAD	1010	const_eio (DT_BLK)
580	# define readahead aio_readahead	1011	const_eio (DT_REG)
581		1012	const_eio (DT_LNK)
582	static ssize_t readahead (int fd, off_t offset, size_t count)	1013	const_eio (DT_SOCK)
583	{	1014	const_eio (DT_WHT)
584	char readahead_buf[4096];
585
586	while (count > 0)
587	{
588	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
589
590	pread (fd, readahead_buf, len, offset);
591	offset += len;
592	count -= len;
593	}
594
595	errno = 0;
596	}
597	#endif
598
599	#if !HAVE_READDIR_R
600	# define readdir_r aio_readdir_r
601
602	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
603
604	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
605	{
606	struct dirent *e;
607	int errorno;
608
609	pthread_mutex_lock (&readdirlock);
610
611	e = readdir (dirp);
612	errorno = errno;
613
614	if (e)
615	{
616	*res = ent;
617	strcpy (ent->d_name, e->d_name);
618	}
619	else
620	*res = 0;
621
622	pthread_mutex_unlock (&readdirlock);
623
624	errno = errorno;
625	return e ? 0 : -1;
626	}
627	#endif
628
629	/* sendfile always needs emulation */
630	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
631	{
632	ssize_t res;
633
634	if (!count)
635	return 0;
636
637	#if HAVE_SENDFILE
638	# if __linux
639	res = sendfile (ofd, ifd, &offset, count);
640
641	# elif __freebsd
642	/*
643	* Of course, the freebsd sendfile is a dire hack with no thoughts
644	* wasted on making it similar to other I/O functions.
645	*/
646	{
647	off_t sbytes;
648	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
649
650	if (res < 0 && sbytes)
651	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
652	res = sbytes;
653	}	1015	};
654		1016
655	# elif __hpux	1017	aio_stash = gv_stashpv ("IO::AIO" , 1);
656	res = sendfile (ofd, ifd, offset, count, 0, 0);	1018	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1019	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1020	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
657		1021
658	# elif __solaris	1022	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
659	{	1023	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
660	struct sendfilevec vec;
661	size_t sbytes;
662		1024
663	vec.sfv_fd = ifd;	1025	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
664	vec.sfv_flag = 0;
665	vec.sfv_off = offset;
666	vec.sfv_len = count;
667		1026
668	res = sendfilev (ofd, &vec, 1, &sbytes);	1027	reinit ();
		1028	}
669		1029
670	if (res < 0 && sbytes)	1030	void
		1031	reinit ()
		1032	PROTOTYPE:
		1033
		1034	void
		1035	max_poll_reqs (unsigned int nreqs)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_max_poll_reqs (nreqs);
		1039
		1040	void
		1041	max_poll_time (double nseconds)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_poll_time (nseconds);
		1045
		1046	void
		1047	min_parallel (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_min_parallel (nthreads);
		1051
		1052	void
		1053	max_parallel (unsigned int nthreads)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_max_parallel (nthreads);
		1057
		1058	void
		1059	max_idle (unsigned int nthreads)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_idle (nthreads);
		1063
		1064	void
		1065	idle_timeout (unsigned int seconds)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_idle_timeout (seconds);
		1069
		1070	void
		1071	max_outstanding (unsigned int maxreqs)
		1072	PROTOTYPE: $
		1073	CODE:
		1074	max_outstanding = maxreqs;
		1075
		1076	void
		1077	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_WD_OPEN;
		1083	req_set_path1 (req, pathname);
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->type = EIO_OPEN;
		1095	req_set_path1 (req, pathname);
		1096	req->int1 = flags;
		1097	req->int2 = mode;
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1104	ALIAS:
		1105	aio_fsync = EIO_FSYNC
		1106	aio_fdatasync = EIO_FDATASYNC
		1107	aio_syncfs = EIO_SYNCFS
		1108	PPCODE:
		1109	{
		1110	int fd = s_fileno_croak (fh, 0);
		1111	dREQ;
		1112
		1113	req->type = ix;
		1114	req->sv1 = newSVsv (fh);
		1115	req->int1 = fd;
		1116
		1117	REQ_SEND (req);
		1118	}
		1119
		1120	void
		1121	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1122	PPCODE:
		1123	{
		1124	int fd = s_fileno_croak (fh, 0);
		1125	dREQ;
		1126
		1127	req->type = EIO_SYNC_FILE_RANGE;
		1128	req->sv1 = newSVsv (fh);
		1129	req->int1 = fd;
		1130	req->offs = offset;
671	res = sbytes;	1131	req->size = nbytes;
672	}	1132	req->int2 = flags;
673		1133
674	# endif	1134	REQ_SEND (req);
		1135	}
		1136
		1137	void
		1138	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	req->type = EIO_FALLOCATE;
		1145	req->sv1 = newSVsv (fh);
		1146	req->int1 = fd;
		1147	req->int2 = mode;
		1148	req->offs = offset;
		1149	req->size = len;
		1150
		1151	REQ_SEND (req);
		1152	}
		1153
		1154	void
		1155	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	if (expect_false (close_fd < 0))
		1163	{
		1164	int pipefd [2];
		1165
		1166	if (
		1167	#ifdef _WIN32
		1168	_pipe (pipefd, 1, _O_BINARY) < 0
675	#else	1169	#else
676	res = -1;	1170	pipe (pipefd) < 0
677	errno = ENOSYS;	1171	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
678	#endif	1172	#endif
679		1173	|| close (pipefd [1]) < 0
680	if (res < 0
681	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
682	#if __solaris
683	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
684	#endif
685	)
686	)
687	{
688	/* emulate sendfile. this is a major pain in the ass */
689	char buf[4096];
690	res = 0;
691
692	while (count)
693	{
694	ssize_t cnt;
695
696	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
697
698	if (cnt <= 0)
699	{	1174	)
700	if (cnt && !res) res = -1;	1175	abort (); /*D*/
701	break;
702	}
703		1176
704	cnt = write (ofd, buf, cnt);	1177	close_fd = pipefd [0];
705
706	if (cnt <= 0)
707	{
708	if (cnt && !res) res = -1;
709	break;
710	}
711
712	offset += cnt;
713	res += cnt;
714	count -= cnt;
715	}
716	}
717
718	return res;
719	}
720
721	/* read a full directory */
722	static int scandir_ (const char *path, void **namesp)
723	{
724	DIR *dirp = opendir (path);
725	union
726	{
727	struct dirent d;
728	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
729	} u;
730	struct dirent *entp;
731	char *name, *names;
732	int memlen = 4096;
733	int memofs = 0;
734	int res = 0;
735	int errorno;
736
737	if (!dirp)
738	return -1;
739
740	names = malloc (memlen);
741
742	for (;;)
743	{
744	errno = 0, readdir_r (dirp, &u.d, &entp);
745
746	if (!entp)
747	break;
748
749	name = entp->d_name;
750
751	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
752	{
753	int len = strlen (name) + 1;
754
755	res++;
756
757	while (memofs + len > memlen)
758	{
759	memlen *= 2;
760	names = realloc (names, memlen);
761	if (!names)
762	break;
763	}
764
765	memcpy (names + memofs, name, len);
766	memofs += len;
767	}
768	}
769
770	errorno = errno;
771	closedir (dirp);
772
773	if (errorno)
774	{
775	free (names);
776	errno = errorno;
777	res = -1;
778	}
779
780	*namesp = (void *)names;
781	return res;
782	}
783
784	/*****************************************************************************/
785
786	static void *aio_proc (void *thr_arg)
787	{
788	aio_req req;
789	int type;
790
791	do
792	{
793	pthread_mutex_lock (&reqlock);
794
795	for (;;)
796	{
797	req = reqs;
798
799	if (reqs)
800	{
801	reqs = reqs->next;
802	if (!reqs) reqe = 0;
803	}
804
805	if (req)
806	break;
807
808	pthread_cond_wait (&reqwait, &reqlock);
809	}
810
811	pthread_mutex_unlock (&reqlock);
812
813	errno = 0; /* strictly unnecessary */
814	type = req->type; /* remember type for QUIT check */
815
816	if (!(req->flags & FLAG_CANCELLED))
817	switch (type)
818	{
819	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
820	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
821
822	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
823	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
824
825	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
826	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
827	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
828
829	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
830	case REQ_CLOSE: req->result = close (req->fd); break;
831	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
832	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
833	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
834	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
835	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
836
837	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
838	case REQ_FSYNC: req->result = fsync (req->fd); break;
839	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
840
841	case REQ_SLEEP:
842	{
843	struct timeval tv;
844
845	tv.tv_sec = req->fd;
846	tv.tv_usec = req->fd2;
847
848	req->result = select (0, 0, 0, 0, &tv);
849	}
850
851	case REQ_GROUP:
852	case REQ_NOP:
853	case REQ_QUIT:
854	break;
855
856	default:
857	req->result = ENOSYS;
858	break;
859	}	1178	}
860		1179
861	req->errorno = errno;
862
863	pthread_mutex_lock (&reslock);
864
865	req->next = 0;
866
867	if (rese)
868	{
869	rese->next = req;
870	rese = req;
871	}
872	else
873	{
874	rese = ress = req;
875
876	/* write a dummy byte to the pipe so fh becomes ready */
877	write (respipe [1], &respipe, 1);
878	}
879
880	pthread_mutex_unlock (&reslock);
881	}
882	while (type != REQ_QUIT);
883
884	return 0;
885	}
886
887	/*****************************************************************************/
888
889	static void atfork_prepare (void)
890	{
891	pthread_mutex_lock (&reqlock);
892	pthread_mutex_lock (&reslock);
893	#if !HAVE_PREADWRITE
894	pthread_mutex_lock (&preadwritelock);
895	#endif
896	#if !HAVE_READDIR_R
897	pthread_mutex_lock (&readdirlock);
898	#endif
899	}
900
901	static void atfork_parent (void)
902	{
903	#if !HAVE_READDIR_R
904	pthread_mutex_unlock (&readdirlock);
905	#endif
906	#if !HAVE_PREADWRITE
907	pthread_mutex_unlock (&preadwritelock);
908	#endif
909	pthread_mutex_unlock (&reslock);
910	pthread_mutex_unlock (&reqlock);
911	}
912
913	static void atfork_child (void)
914	{
915	aio_req prv;
916
917	started = 0;
918
919	while (reqs)
920	{
921	prv = reqs;
922	reqs = prv->next;
923	req_free (prv);
924	}
925
926	reqs = reqe = 0;
927
928	while (ress)
929	{
930	prv = ress;
931	ress = prv->next;
932	req_free (prv);
933	}
934
935	ress = rese = 0;
936
937	close (respipe [0]);
938	close (respipe [1]);
939	create_pipe ();
940
941	atfork_parent ();
942	}
943
944	#define dREQ \
945	aio_req req; \
946	int req_pri = next_pri; \
947	next_pri = DEFAULT_PRI + PRI_BIAS; \
948	\
949	if (SvOK (callback) && !SvROK (callback)) \
950	croak ("callback must be undef or of reference type"); \
951	\
952	Newz (0, req, 1, aio_cb); \
953	if (!req) \
954	croak ("out of memory during aio_req allocation"); \
955	\
956	req->callback = newSVsv (callback); \
957	req->pri = req_pri
958
959	#define REQ_SEND \
960	req_send (req); \
961	\
962	if (GIMME_V != G_VOID) \
963	XPUSHs (req_sv (req, AIO_REQ_KLASS));
964
965	MODULE = IO::AIO PACKAGE = IO::AIO
966
967	PROTOTYPES: ENABLE
968
969	BOOT:
970	{
971	HV *stash = gv_stashpv ("IO::AIO", 1);
972	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
973	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
974	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
975
976	create_pipe ();
977	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
978	}
979
980	void
981	min_parallel (nthreads)
982	int nthreads
983	PROTOTYPE: $
984
985	void
986	max_parallel (nthreads)
987	int nthreads
988	PROTOTYPE: $
989
990	int
991	max_outstanding (nreqs)
992	int nreqs
993	PROTOTYPE: $
994	CODE:
995	RETVAL = max_outstanding;
996	max_outstanding = nreqs;
997
998	void
999	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1000	SV * pathname
1001	int flags
1002	int mode
1003	SV * callback
1004	PROTOTYPE: $$$;$
1005	PPCODE:
1006	{
1007	dREQ;
1008
1009	req->type = REQ_OPEN;	1180	req->type = EIO_DUP2;
		1181	req->int1 = close_fd;
1010	req->data = newSVsv (pathname);	1182	req->sv2 = newSVsv (fh);
1011	req->dataptr = SvPVbyte_nolen (req->data);	1183	req->int2 = fd;
1012	req->fd = flags;
1013	req->mode = mode;
1014		1184
1015	REQ_SEND;	1185	REQ_SEND (req);
1016	}	1186	}
1017		1187
1018	void	1188	void
1019	aio_close (fh,callback=&PL_sv_undef)	1189	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1020	SV * fh
1021	SV * callback
1022	PROTOTYPE: $;$
1023	ALIAS:	1190	ALIAS:
1024	aio_close = REQ_CLOSE
1025	aio_fsync = REQ_FSYNC
1026	aio_fdatasync = REQ_FDATASYNC
1027	PPCODE:
1028	{
1029	dREQ;
1030
1031	req->type = ix;
1032	req->fh = newSVsv (fh);
1033	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1034
1035	REQ_SEND (req);
1036	}
1037
1038	void
1039	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1040	SV * fh
1041	UV offset
1042	UV length
1043	SV * data
1044	UV dataoffset
1045	SV * callback
1046	ALIAS:
1047	aio_read = REQ_READ	1191	aio_read = EIO_READ
1048	aio_write = REQ_WRITE	1192	aio_write = EIO_WRITE
1049	PROTOTYPE: $$$$$;$
1050	PPCODE:	1193	PPCODE:
1051	{	1194	{
1052	aio_req req;
1053	STRLEN svlen;	1195	STRLEN svlen;
		1196	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1054	char *svptr = SvPVbyte (data, svlen);	1197	char *svptr = SvPVbyte (data, svlen);
1055		1198	UV len = SvUV (length);
1056	SvUPGRADE (data, SVt_PV);
1057	SvPOK_on (data);
1058		1199
1059	if (dataoffset < 0)	1200	if (dataoffset < 0)
1060	dataoffset += svlen;	1201	dataoffset += svlen;
1061		1202
1062	if (dataoffset < 0 || dataoffset > svlen)	1203	if (dataoffset < 0 || dataoffset > svlen)
1063	croak ("data offset outside of string");	1204	croak ("dataoffset outside of data scalar");
1064		1205
1065	if (ix == REQ_WRITE)	1206	if (ix == EIO_WRITE)
1066	{	1207	{
1067	/* write: check length and adjust. */	1208	/* write: check length and adjust. */
1068	if (length < 0 || length + dataoffset > svlen)	1209	if (!SvOK (length) || len + dataoffset > svlen)
1069	length = svlen - dataoffset;	1210	len = svlen - dataoffset;
1070	}	1211	}
1071	else	1212	else
1072	{	1213	{
1073	/* read: grow scalar as necessary */	1214	/* read: check type and grow scalar as necessary */
		1215	SvUPGRADE (data, SVt_PV);
1074	svptr = SvGROW (data, length + dataoffset);	1216	svptr = SvGROW (data, len + dataoffset + 1);
1075	}	1217	}
1076
1077	if (length < 0)
1078	croak ("length must not be negative");
1079		1218
1080	{	1219	{
1081	dREQ;	1220	dREQ;
1082		1221
1083	req->type = ix;	1222	req->type = ix;
1084	req->fh = newSVsv (fh);	1223	req->sv1 = newSVsv (fh);
1085	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1224	req->int1 = fd;
1086	: IoOFP (sv_2io (fh)));	1225	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1087	req->offset = offset;	1226	req->size = len;
1088	req->length = length;
1089	req->data = SvREFCNT_inc (data);	1227	req->sv2 = SvREFCNT_inc (data);
1090	req->dataptr = (char *)svptr + dataoffset;	1228	req->ptr2 = (char *)svptr + dataoffset;
		1229	req->stroffset = dataoffset;
1091		1230
1092	if (!SvREADONLY (data))	1231	if (!SvREADONLY (data))
1093	{	1232	{
1094	SvREADONLY_on (data);	1233	SvREADONLY_on (data);
1095	req->data2ptr = (void *)data;	1234	req->flags |= FLAG_SV2_RO_OFF;
1096	}	1235	}
1097		1236
1098	REQ_SEND;	1237	REQ_SEND;
1099	}	1238	}
1100	}	1239	}
1101		1240
1102	void	1241	void
1103	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1242	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1104	SV * out_fh	1243	ALIAS:
1105	SV * in_fh	1244	aio_readlink = EIO_READLINK
1106	UV in_offset	1245	aio_realpath = EIO_REALPATH
1107	UV length
1108	SV * callback
1109	PROTOTYPE: $$$$;$
1110	PPCODE:	1246	PPCODE:
1111	{	1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req_set_path1 (req, pathname);
		1252
		1253	REQ_SEND;
		1254	}
		1255
		1256	void
		1257	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1258	PPCODE:
		1259	{
		1260	int ifd = s_fileno_croak (in_fh , 0);
		1261	int ofd = s_fileno_croak (out_fh, 1);
1112	dREQ;	1262	dREQ;
1113		1263
1114	req->type = REQ_SENDFILE;	1264	req->type = EIO_SENDFILE;
1115	req->fh = newSVsv (out_fh);	1265	req->sv1 = newSVsv (out_fh);
1116	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1266	req->int1 = ofd;
1117	req->fh2 = newSVsv (in_fh);	1267	req->sv2 = newSVsv (in_fh);
1118	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1268	req->int2 = ifd;
1119	req->offset = in_offset;	1269	req->offs = in_offset;
1120	req->length = length;	1270	req->size = length;
1121		1271
1122	REQ_SEND;	1272	REQ_SEND;
1123	}	1273	}
1124		1274
1125	void	1275	void
1126	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1276	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1127	SV * fh
1128	UV offset
1129	IV length
1130	SV * callback
1131	PROTOTYPE: $$$;$
1132	PPCODE:	1277	PPCODE:
1133	{	1278	{
		1279	int fd = s_fileno_croak (fh, 0);
1134	dREQ;	1280	dREQ;
1135		1281
1136	req->type = REQ_READAHEAD;	1282	req->type = EIO_READAHEAD;
1137	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1138	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1284	req->int1 = fd;
1139	req->offset = offset;	1285	req->offs = offset;
1140	req->length = length;	1286	req->size = length;
1141		1287
1142	REQ_SEND;	1288	REQ_SEND;
1143	}	1289	}
1144		1290
1145	void	1291	void
1146	aio_stat (fh_or_path,callback=&PL_sv_undef)	1292	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1147	SV * fh_or_path
1148	SV * callback
1149	ALIAS:	1293	ALIAS:
1150	aio_stat = REQ_STAT	1294	aio_stat = EIO_STAT
1151	aio_lstat = REQ_LSTAT	1295	aio_lstat = EIO_LSTAT
		1296	aio_statvfs = EIO_STATVFS
1152	PPCODE:	1297	PPCODE:
1153	{	1298	{
1154	dREQ;	1299	dREQ;
1155		1300
1156	New (0, req->statdata, 1, Stat_t);
1157	if (!req->statdata)
1158	{
1159	req_free (req);
1160	croak ("out of memory during aio_req->statdata allocation");
1161	}
1162
1163	if (SvPOK (fh_or_path))
1164	{
1165	req->type = ix;
1166	req->data = newSVsv (fh_or_path);
1167	req->dataptr = SvPVbyte_nolen (req->data);
1168	}
1169	else
1170	{
1171	req->type = REQ_FSTAT;
1172	req->fh = newSVsv (fh_or_path);	1301	req->sv1 = newSVsv (fh_or_path);
1173	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1302	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1174	}
1175
1176	REQ_SEND;	1303	REQ_SEND;
1177	}	1304	}
1178		1305
		1306	UV
		1307	major (UV dev)
		1308	ALIAS:
		1309	minor = 1
		1310	CODE:
		1311	RETVAL = ix ? major (dev) : minor (dev);
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	UV
		1316	makedev (UV maj, UV min)
		1317	CODE:
		1318	RETVAL = makedev (maj, min);
		1319	OUTPUT:
		1320	RETVAL
		1321
1179	void	1322	void
		1323	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1329	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1330	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1331
		1332	REQ_SEND;
		1333	}
		1334
		1335	void
		1336	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1337	PPCODE:
		1338	{
		1339	dREQ;
		1340
		1341	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1342	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1349	PPCODE:
		1350	{
		1351	dREQ;
		1352
		1353	req->int2 = mode;
		1354	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1366	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1367	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
		1373	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = EIO_READDIR;
		1379	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1380
		1381	if (flags & EIO_READDIR_DENTS)
		1382	req->int1 |= EIO_READDIR_CUSTOM2;
		1383
		1384	req_set_path1 (req, pathname);
		1385
		1386	REQ_SEND;
		1387	}
		1388
		1389	void
		1390	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1391	PPCODE:
		1392	{
		1393	dREQ;
		1394
		1395	req->type = EIO_MKDIR;
		1396	req->int2 = mode;
		1397	req_set_path1 (req, pathname);
		1398
		1399	REQ_SEND;
		1400	}
		1401
		1402	void
1180	aio_unlink (pathname,callback=&PL_sv_undef)	1403	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1181	SV * pathname
1182	SV * callback
1183	ALIAS:	1404	ALIAS:
1184	aio_unlink = REQ_UNLINK	1405	aio_unlink = EIO_UNLINK
1185	aio_rmdir = REQ_RMDIR	1406	aio_rmdir = EIO_RMDIR
1186	aio_readdir = REQ_READDIR	1407	aio_readdir = EIO_READDIR
1187	PPCODE:	1408	PPCODE:
1188	{	1409	{
1189	dREQ;	1410	dREQ;
1190		1411
1191	req->type = ix;	1412	req->type = ix;
1192	req->data = newSVsv (pathname);	1413	req_set_path1 (req, pathname);
1193	req->dataptr = SvPVbyte_nolen (req->data);	1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1420	ALIAS:
		1421	aio_link = EIO_LINK
		1422	aio_symlink = EIO_SYMLINK
		1423	aio_rename = EIO_RENAME
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427	eio_wd wd2 = 0;
		1428
		1429	req->type = ix;
		1430	req_set_path1 (req, oldpath);
		1431	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1432	req->int3 = (long)wd2;
1194		1433
1195	REQ_SEND;	1434	REQ_SEND;
1196	}	1435	}
1197		1436
1198	void	1437	void
1199	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1438	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1200	SV * oldpath
1201	SV * newpath
1202	SV * callback
1203	ALIAS:
1204	aio_link = REQ_LINK
1205	aio_symlink = REQ_SYMLINK
1206	aio_rename = REQ_RENAME
1207	PPCODE:	1439	PPCODE:
1208	{	1440	{
1209	dREQ;	1441	dREQ;
1210		1442
1211	req->type = ix;	1443	req->type = EIO_MKNOD;
1212	req->fh = newSVsv (oldpath);	1444	req->int2 = (mode_t)mode;
1213	req->data2ptr = SvPVbyte_nolen (req->fh);	1445	req->offs = dev;
1214	req->data = newSVsv (newpath);	1446	req_set_path1 (req, pathname);
1215	req->dataptr = SvPVbyte_nolen (req->data);
1216		1447
1217	REQ_SEND;	1448	REQ_SEND;
1218	}	1449	}
1219		1450
1220	void	1451	void
		1452	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1453	ALIAS:
		1454	aio_mtouch = EIO_MTOUCH
		1455	aio_msync = EIO_MSYNC
		1456	PPCODE:
		1457	{
		1458	STRLEN svlen;
		1459	char *svptr = SvPVbyte (data, svlen);
		1460	UV len = SvUV (length);
		1461
		1462	if (offset < 0)
		1463	offset += svlen;
		1464
		1465	if (offset < 0 || offset > svlen)
		1466	croak ("offset outside of scalar");
		1467
		1468	if (!SvOK (length) || len + offset > svlen)
		1469	len = svlen - offset;
		1470
		1471	{
		1472	dREQ;
		1473
		1474	req->type = ix;
		1475	req->sv2 = SvREFCNT_inc (data);
		1476	req->ptr2 = (char *)svptr + offset;
		1477	req->size = len;
		1478	req->int1 = flags;
		1479
		1480	REQ_SEND;
		1481	}
		1482	}
		1483
		1484	void
		1485	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1486	PPCODE:
		1487	{
		1488	STRLEN svlen;
		1489	char *svptr = SvPVbyte (data, svlen);
		1490	UV len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_MLOCK;
		1505	req->sv2 = SvREFCNT_inc (data);
		1506	req->ptr2 = (char *)svptr + offset;
		1507	req->size = len;
		1508
		1509	REQ_SEND;
		1510	}
		1511	}
		1512
		1513	void
		1514	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1515	PPCODE:
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCKALL;
		1520	req->int1 = flags;
		1521
		1522	REQ_SEND;
		1523	}
		1524
		1525	void
1221	aio_sleep (delay,callback=&PL_sv_undef)	1526	aio_busy (double delay, SV *callback=&PL_sv_undef)
1222	double delay
1223	SV * callback
1224	PPCODE:	1527	PPCODE:
1225	{	1528	{
1226	dREQ;	1529	dREQ;
1227		1530
1228	req->type = REQ_SLEEP;	1531	req->type = EIO_BUSY;
1229	req->fd = delay < 0. ? 0 : delay;	1532	req->nv1 = delay < 0. ? 0. : delay;
1230	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1231		1533
1232	REQ_SEND;	1534	REQ_SEND;
1233	}	1535	}
1234		1536
1235	void	1537	void
1236	aio_group (callback=&PL_sv_undef)	1538	aio_group (SV *callback=&PL_sv_undef)
1237	SV * callback
1238	PROTOTYPE: ;$
1239	PPCODE:	1539	PPCODE:
1240	{	1540	{
1241	dREQ;	1541	dREQ;
1242		1542
1243	req->type = REQ_GROUP;	1543	req->type = EIO_GROUP;
		1544
1244	req_send (req);	1545	req_submit (req);
1245
1246	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1546	XPUSHs (req_sv (req, aio_grp_stash));
1247	}	1547	}
1248		1548
1249	void	1549	void
1250	aio_nop (callback=&PL_sv_undef)	1550	aio_nop (SV *callback=&PL_sv_undef)
1251	SV * callback	1551	ALIAS:
		1552	aio_nop = EIO_NOP
		1553	aio_sync = EIO_SYNC
1252	PPCODE:	1554	PPCODE:
1253	{	1555	{
1254	dREQ;	1556	dREQ;
1255		1557
1256	req->type = REQ_NOP;	1558	req->type = ix;
1257		1559
1258	REQ_SEND;	1560	REQ_SEND;
1259	}	1561	}
1260		1562
1261	#if 0	1563	int
1262		1564	aioreq_pri (int pri = 0)
1263	void
1264	aio_pri (int pri = DEFAULT_PRI)
1265	CODE:	1565	CODE:
		1566	RETVAL = next_pri;
		1567	if (items > 0)
		1568	{
1266	if (pri < PRI_MIN) pri = PRI_MIN;	1569	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1267	if (pri > PRI_MAX) pri = PRI_MAX;	1570	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1268	next_pri = pri + PRI_BIAS;	1571	next_pri = pri;
		1572	}
		1573	OUTPUT:
		1574	RETVAL
1269		1575
1270	#endif	1576	void
		1577	aioreq_nice (int nice = 0)
		1578	CODE:
		1579	nice = next_pri - nice;
		1580	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1581	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1582	next_pri = nice;
1271		1583
1272	void	1584	void
1273	flush ()	1585	flush ()
1274	PROTOTYPE:
1275	CODE:	1586	CODE:
1276	while (nreqs)	1587	while (eio_nreqs ())
1277	{	1588	{
1278	poll_wait ();	1589	poll_wait ();
1279	poll_cb ();	1590	poll_cb ();
1280	}	1591	}
1281		1592
1282	void
1283	poll()
1284	PROTOTYPE:
1285	CODE:
1286	if (nreqs)
1287	{
1288	poll_wait ();
1289	poll_cb ();
1290	}
1291
1292	int	1593	int
1293	poll_fileno()	1594	poll ()
1294	PROTOTYPE:
1295	CODE:	1595	CODE:
1296	RETVAL = respipe [0];	1596	poll_wait ();
1297	OUTPUT:
1298	RETVAL
1299
1300	int
1301	poll_cb(...)
1302	PROTOTYPE:
1303	CODE:
1304	RETVAL = poll_cb ();	1597	RETVAL = poll_cb ();
1305	OUTPUT:	1598	OUTPUT:
1306	RETVAL	1599	RETVAL
1307		1600
1308	void
1309	poll_wait()
1310	PROTOTYPE:
1311	CODE:
1312	if (nreqs)
1313	poll_wait ();
1314
1315	int	1601	int
1316	nreqs()	1602	poll_fileno ()
1317	PROTOTYPE:
1318	CODE:	1603	CODE:
1319	RETVAL = nreqs;	1604	RETVAL = s_epipe_fd (&respipe);
1320	OUTPUT:	1605	OUTPUT:
1321	RETVAL	1606	RETVAL
1322		1607
		1608	int
		1609	poll_cb (...)
		1610	PROTOTYPE:
		1611	CODE:
		1612	RETVAL = poll_cb ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	void
		1617	poll_wait ()
		1618	CODE:
		1619	poll_wait ();
		1620
		1621	int
		1622	nreqs ()
		1623	CODE:
		1624	RETVAL = eio_nreqs ();
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	int
		1629	nready ()
		1630	CODE:
		1631	RETVAL = eio_nready ();
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	int
		1636	npending ()
		1637	CODE:
		1638	RETVAL = eio_npending ();
		1639	OUTPUT:
		1640	RETVAL
		1641
		1642	int
		1643	nthreads ()
		1644	CODE:
		1645	RETVAL = eio_nthreads ();
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1651	CODE:
		1652	RETVAL = posix_fadvise (fh, offset, length, advice);
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	IV
		1657	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1658	CODE:
		1659	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	void
		1664	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1665	PPCODE:
		1666	sv_unmagic (scalar, MMAP_MAGIC);
		1667	{
		1668	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1669	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1670	if (addr == (void *)-1)
		1671	XSRETURN_NO;
		1672
		1673	sv_force_normal (scalar);
		1674
		1675	/* we store the length in mg_obj, as namlen is I32 :/ */
		1676	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1677	->mg_obj = (SV *)length;
		1678
		1679	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1680
		1681	if (!(prot & PROT_WRITE))
		1682	SvREADONLY_on (scalar);
		1683
		1684	if (SvLEN (scalar))
		1685	Safefree (SvPVX (scalar));
		1686
		1687	SvPVX (scalar) = (char *)addr;
		1688	SvCUR_set (scalar, length);
		1689	SvLEN_set (scalar, 0);
		1690	SvPOK_only (scalar);
		1691
		1692	XSRETURN_YES;
		1693	}
		1694
		1695	void
		1696	munmap (SV *scalar)
		1697	CODE:
		1698	sv_unmagic (scalar, MMAP_MAGIC);
		1699
		1700	int
		1701	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1702	ALIAS:
		1703	mprotect = 1
		1704	CODE:
		1705	{
		1706	STRLEN svlen;
		1707	void *addr = SvPVbyte (scalar, svlen);
		1708	size_t len = SvUV (length);
		1709
		1710	if (offset < 0)
		1711	offset += svlen;
		1712
		1713	if (offset < 0 || offset > svlen)
		1714	croak ("offset outside of scalar");
		1715
		1716	if (!SvOK (length) || len + offset > svlen)
		1717	len = svlen - offset;
		1718
		1719	addr = (void *)(((intptr_t)addr) + offset);
		1720	eio_page_align (&addr, &len);
		1721
		1722	switch (ix)
		1723	{
		1724	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1725	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1726	}
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1733	CODE:
		1734	{
		1735	STRLEN svlen;
		1736	void *addr = SvPVbyte (scalar, svlen);
		1737	size_t len = SvUV (length);
		1738
		1739	if (offset < 0)
		1740	offset += svlen;
		1741
		1742	if (offset < 0 || offset > svlen)
		1743	croak ("offset outside of scalar");
		1744
		1745	if (!SvOK (length) || len + offset > svlen)
		1746	len = svlen - offset;
		1747
		1748	addr = (void *)(((intptr_t)addr) + offset);
		1749	eio_page_align (&addr, &len);
		1750	#if _POSIX_MEMLOCK_RANGE
		1751	RETVAL = munlock (addr, len);
		1752	#else
		1753	RETVAL = ((errno = ENOSYS), -1);
		1754	#endif
		1755	}
		1756	OUTPUT:
		1757	RETVAL
		1758
		1759	int
		1760	munlockall ()
		1761	CODE:
		1762	#if _POSIX_MEMLOCK
		1763	munlockall ();
		1764	#else
		1765	RETVAL = -1;
		1766	errno = ENOSYS;
		1767	#endif
		1768	OUTPUT:
		1769	RETVAL
		1770
		1771	void _on_next_submit (SV *cb)
		1772	CODE:
		1773	SvREFCNT_dec (on_next_submit);
		1774	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1775
1323	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1324		1777
		1778	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1779
		1780	BOOT:
		1781	{
		1782	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1783	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1784	}
		1785
		1786	void
		1787	DESTROY (SV *self)
		1788	CODE:
		1789	{
		1790	aio_wd wd = SvAIO_WD (self);
		1791	#if HAVE_AT
		1792	SV *callback = &PL_sv_undef;
		1793	dREQ; /* clobbers next_pri :/ */
		1794	req->type = EIO_WD_CLOSE;
		1795	req->wd = wd;
		1796	REQ_SEND;
		1797	#else
		1798	eio_wd_close_sync (wd);
		1799	#endif
		1800	}
		1801
1325	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1802	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1326		1803
1327	void	1804	void
1328	cancel (aio_req_ornot req)	1805	cancel (aio_req_ornot req)
1329	PROTOTYPE:
1330	CODE:	1806	CODE:
1331	req_cancel (req);	1807	eio_cancel (req);
1332		1808
1333	void	1809	void
1334	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1810	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1335	CODE:	1811	PPCODE:
		1812	{
		1813	if (GIMME_V != G_VOID)
		1814	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1815
		1816	if (items > 1)
		1817	{
		1818	SV *cb_cv =get_cb (callback);
		1819
1336	SvREFCNT_dec (req->callback);	1820	SvREFCNT_dec (req->callback);
1337	req->callback = newSVsv (callback);	1821	req->callback = SvREFCNT_inc (cb_cv);
		1822	}
		1823	}
1338		1824
1339	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1825	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1340		1826
1341	void	1827	void
1342	add (aio_req grp, ...)	1828	add (aio_req grp, ...)
1343	PPCODE:	1829	PPCODE:
1344	{	1830	{
1345	int i;	1831	int i;
1346	aio_req req;
1347		1832
1348	if (grp->fd == 2)	1833	if (grp->int1 == 2)
1349	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1834	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1350		1835
1351	for (i = 1; i < items; ++i )	1836	for (i = 1; i < items; ++i )
1352	{	1837	{
		1838	aio_req req;
		1839
1353	if (GIMME_V != G_VOID)	1840	if (GIMME_V != G_VOID)
1354	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1841	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1355		1842
1356	req = SvAIO_REQ (ST (i));	1843	req = SvAIO_REQ (ST (i));
1357		1844
1358	if (req)	1845	if (req)
1359	{	1846	eio_grp_add (grp, req);
1360	++grp->length;
1361	req->grp = grp;
1362
1363	req->grp_prev = 0;
1364	req->grp_next = grp->grp_first;
1365
1366	if (grp->grp_first)
1367	grp->grp_first->grp_prev = req;
1368
1369	grp->grp_first = req;
1370	}
1371	}	1847	}
1372	}	1848	}
		1849
		1850	void
		1851	cancel_subs (aio_req_ornot req)
		1852	CODE:
		1853	req_cancel_subs (req);
1373		1854
1374	void	1855	void
1375	result (aio_req grp, ...)	1856	result (aio_req grp, ...)
1376	CODE:	1857	CODE:
1377	{	1858	{
1378	int i;	1859	int i;
		1860	AV *av;
		1861
		1862	grp->errorno = errno;
		1863
1379	AV *av = newAV ();	1864	av = newAV ();
		1865	av_extend (av, items - 1);
1380		1866
1381	for (i = 1; i < items; ++i )	1867	for (i = 1; i < items; ++i )
1382	av_push (av, newSVsv (ST (i)));	1868	av_push (av, newSVsv (ST (i)));
1383		1869
1384	SvREFCNT_dec (grp->data);	1870	SvREFCNT_dec (grp->sv1);
1385	grp->data = (SV *)av;	1871	grp->sv1 = (SV *)av;
1386	}	1872	}
1387		1873
1388	void	1874	void
		1875	errno (aio_req grp, int errorno = errno)
		1876	CODE:
		1877	grp->errorno = errorno;
		1878
		1879	void
1389	feed_limit (aio_req grp, int limit)	1880	limit (aio_req grp, int limit)
1390	CODE:	1881	CODE:
1391	grp->fd2 = limit;	1882	eio_grp_limit (grp, limit);
1392	aio_grp_feed (grp);
1393		1883
1394	void	1884	void
1395	feed (aio_req grp, SV *callback=&PL_sv_undef)	1885	feed (aio_req grp, SV *callback=&PL_sv_undef)
1396	CODE:	1886	CODE:
1397	{	1887	{
1398	SvREFCNT_dec (grp->fh2);	1888	SvREFCNT_dec (grp->sv2);
1399	grp->fh2 = newSVsv (callback);	1889	grp->sv2 = newSVsv (callback);
		1890	grp->feed = aio_grp_feed;
1400		1891
1401	if (grp->fd2 <= 0)	1892	if (grp->int2 <= 0)
1402	grp->fd2 = 2;	1893	grp->int2 = 2;
1403		1894
1404	aio_grp_feed (grp);	1895	eio_grp_limit (grp, grp->int2);
1405	}	1896	}
1406		1897

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