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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.49 by root, Sun Oct 22 13:33:28 2006 UTC vs.
Revision 1.214 by root, Mon May 28 17:00:19 2012 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
		21	# include <sys/mman.h>
		22	#endif
		23
25	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
26	# include <sys/sendfile.h>	82	#include <sys/select.h>
27	# elif __freebsd	83	#include <unistd.h>
28	# include <sys/socket.h>	84	#include <utime.h>
29	# include <sys/uio.h>	85	#include <signal.h>
30	# elif __hpux	86
31	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
32	# elif __solaris /* not yet */	88
33	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
34	# else	140	# else
35	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	142	# endif
37	#endif	143	#endif
38		144
39	/* used for struct dirent, AIX doesn't provide it */	145	/* defines all sorts of constants to 0 unless they are already defined */
40	#ifndef NAME_MAX	146	#include "def0.h"
41	# define NAME_MAX 4096
42	#endif
43		147
44	#if __ia64	148	#ifndef makedev
45	# define STACKSIZE 65536	149	# define makedev(maj,min) (((maj) << 8) | (min))
		150	#endif
		151	#ifndef major
		152	# define major(dev) ((dev) >> 8)
		153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
		157
		158	#ifndef PAGESIZE
		159	# define PAGESIZE sysconf (_SC_PAGESIZE)
		160	#endif
		161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 64 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		200	break; /* autosizing successful, we are done */
		201
		202	fiemap->fm_flags = req->int2;
		203	fiemap->fm_extent_count = 0;
		204
		205	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		206	return;
		207
		208	count = fiemap->fm_mapped_extents;
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
46	#else	215	#else
47	# define STACKSIZE 8192	216	errno = ENOSYS;
48	#endif	217	#endif
		218	}
		219
		220	/*****************************************************************************/
49		221
50	enum {	222	enum {
51	REQ_QUIT,	223	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_SLEEP,
61	REQ_GROUP,
62	};	224	};
63		225
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	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74
75	SV *data, *callback;
76	SV *fh, *fh2;
77	void *dataptr, *data2ptr;
78	Stat_t *statdata;
79	off_t offset;
80	size_t length;
81	ssize_t result;
82
83	int type;
84	int fd, fd2;
85	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */
88	unsigned char cancelled;
89	} aio_cb;
90
91	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
92	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
93		229
94	static int started, wanted;	230	static SV *on_next_submit;
95	static volatile int nreqs;	231	static int next_pri = EIO_PRI_DEFAULT;
96	static int max_outstanding = 1<<30;	232	static int max_outstanding;
97	static int respipe [2];
98		233
99	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	234	static s_epipe respipe;
100	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
101	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
102		235
103	static volatile aio_req reqs, reqe; /* queue start, queue end */	236	static void req_destroy (aio_req req);
104	static volatile aio_req ress, rese; /* queue start, queue end */
105
106	static void req_free (aio_req req);	237	static void req_cancel (aio_req req);
		238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
107		252
108	/* must be called at most once */	253	/* must be called at most once */
109	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
110	{	256	{
111	if (!req->self)	257	if (!req->self)
112	{	258	{
113	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
114	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
115	}	261	}
116		262
117	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
118	}	264	}
119		265
120	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
121	{	268	{
122	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
		274	{
		275	MAGIC *mg;
		276
		277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
123	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
124		283
125	MAGIC *mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
126		285
127	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
128	}	287	}
129		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
130	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
131	{	302	{
132	while (grp->length < grp->fd2)	303	if (grp->sv2 && SvOK (grp->sv2))
133	{	304	{
134	int old_len = grp->length;	305	dSP;
135		306
136	if (grp->fh2 && SvOK (grp->fh2))	307	ENTER;
		308	SAVETMPS;
		309	PUSHMARK (SP);
		310	XPUSHs (req_sv (grp, aio_grp_stash));
		311	PUTBACK;
		312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		313	SPAGAIN;
		314	FREETMPS;
		315	LEAVE;
		316	}
		317	}
		318
		319	static void
		320	req_submit (eio_req *req)
		321	{
		322	eio_submit (req);
		323
		324	if (expect_false (on_next_submit))
		325	{
		326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
		334	}
		335	}
		336
		337	static int
		338	req_invoke (eio_req *req)
		339	{
		340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
		342
		343	if (!EIO_CANCELLED (req) && req->callback)
		344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
		349	ENTER;
		350	SAVETMPS;
		351	PUSHMARK (SP);
		352	EXTEND (SP, 1);
		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
137	{	356	{
138	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
139		358	SvIV_set (sv_result, req->result);
140	ENTER;	359	SvIOK_only (sv_result);
141	SAVETMPS;
142	PUSHMARK (SP);
143	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
144	PUTBACK;
145	call_sv (grp->fh2, G_VOID | G_EVAL);
146	SPAGAIN;
147	FREETMPS;
148	LEAVE;
149	}	360	}
150		361	else
151	/* stop if no progress has been made */
152	if (old_len == grp->length)
153	{	362	{
154	SvREFCNT_dec (grp->fh2);	363	sv_result = newSViv (req->result);
155	grp->fh2 = 0;	364	SvREADONLY_on (sv_result);
156	break;
157	}	365	}
		366
		367	switch (req->type)
		368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
		373	case EIO_READDIR:
		374	{
		375	SV *rv = &PL_sv_undef;
		376
		377	if (req->result >= 0)
		378	{
		379	int i;
		380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		382	AV *av = newAV ();
		383
		384	av_extend (av, req->result - 1);
		385
		386	for (i = 0; i < req->result; ++i)
		387	{
		388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
		412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
		420	names += SvCUR (name) + 1;
		421	}
		422	}
		423
		424	rv = sv_2mortal (newRV_noinc ((SV *)av));
		425	}
		426
		427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		431	}
		432	break;
		433
		434	case EIO_OPEN:
		435	{
		436	/* convert fd to fh */
		437	SV *fh = &PL_sv_undef;
		438
		439	if (req->result >= 0)
		440	{
		441	GV *gv = (GV *)sv_newmortal ();
		442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
		448
		449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
		461	PUSHs (fh);
		462	}
		463	break;
		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
		497	case EIO_GROUP:
		498	req->int1 = 2; /* mark group as finished */
		499
		500	if (req->sv1)
		501	{
		502	int i;
		503	AV *av = (AV *)req->sv1;
		504
		505	EXTEND (SP, AvFILL (av) + 1);
		506	for (i = 0; i <= AvFILL (av); ++i)
		507	PUSHs (*av_fetch (av, i, 0));
		508	}
		509	break;
		510
		511	case EIO_NOP:
		512	case EIO_BUSY:
		513	break;
		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	#if HAVE_FIEMAP
		551	if (!req->result)
		552	{
		553	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		554
		555	if (fiemap->fm_extent_count)
		556	{
		557	AV *av = newAV ();
		558	int i;
		559
		560	while (fiemap->fm_mapped_extents)
		561	{
		562	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		563	AV *ext_av = newAV ();
		564
		565	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		566	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		567	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		568	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		569
		570	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		571	}
		572
		573	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		574	}
		575	else
		576	{
		577	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		578	PUSHs (sv_result);
		579	}
		580	}
		581	#endif
		582	}
		583	else
		584	PUSHs (sv_result);
		585	break;
		586
		587	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		588	if (req->result > 0)
		589	SvIV_set (sv_result, 0);
		590	/* FALLTHROUGH */
		591
		592	default:
		593	PUSHs (sv_result);
		594	break;
		595	}
		596
		597	errno = req->errorno;
		598
		599	PUTBACK;
		600	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		601	SPAGAIN;
		602
		603	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		604	SvREFCNT_dec (sv_result);
		605	else
		606	sv_result_cache = sv_result;
		607
		608	FREETMPS;
		609	LEAVE;
		610
		611	PUTBACK;
158	}	612	}
159	}
160		613
161	static void poll_wait ()	614	return !!SvTRUE (ERRSV);
162	{
163	if (nreqs && !ress)
164	{
165	fd_set rfd;
166	FD_ZERO(&rfd);
167	FD_SET(respipe [0], &rfd);
168
169	select (respipe [0] + 1, &rfd, 0, 0, 0);
170	}
171	}	615	}
172		616
173	static void req_invoke (aio_req req)	617	static void
		618	req_destroy (aio_req req)
174	{	619	{
175	dSP;
176	int errorno = errno;
177
178	if (req->cancelled || !SvOK (req->callback))
179	return;
180
181	errno = req->errorno;
182
183	ENTER;
184	SAVETMPS;
185	PUSHMARK (SP);
186	EXTEND (SP, 1);
187
188	switch (req->type)
189	{
190	case REQ_READDIR:
191	{
192	SV *rv = &PL_sv_undef;
193
194	if (req->result >= 0)
195	{
196	char *buf = req->data2ptr;
197	AV *av = newAV ();
198
199	while (req->result)
200	{
201	SV *sv = newSVpv (buf, 0);
202
203	av_push (av, sv);
204	buf += SvCUR (sv) + 1;
205	req->result--;
206	}
207
208	rv = sv_2mortal (newRV_noinc ((SV *)av));
209	}
210
211	PUSHs (rv);
212	}
213	break;
214
215	case REQ_OPEN:
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUSHs (sv_2mortal (newSViv (req->result)));
221	PUTBACK;
222	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
223	SPAGAIN;
224
225	fh = SvREFCNT_inc (POPs);
226
227	PUSHMARK (SP);
228	XPUSHs (sv_2mortal (fh));
229	}
230	break;
231
232	case REQ_GROUP:
233	req->fd = 2; /* mark group as finished */
234
235	if (req->data)
236	{
237	int i;
238	AV *av = (AV *)req->data;
239
240	EXTEND (SP, AvFILL (av) + 1);
241	for (i = 0; i <= AvFILL (av); ++i)
242	PUSHs (*av_fetch (av, i, 0));
243	}
244	break;
245
246	case REQ_SLEEP:
247	break;
248
249	default:
250	PUSHs (sv_2mortal (newSViv (req->result)));
251	break;
252	}
253
254
255	PUTBACK;
256	call_sv (req->callback, G_VOID | G_EVAL);
257	SPAGAIN;
258
259	if (SvTRUE (ERRSV))
260	{
261	req_free (req);
262	croak (0);
263	}
264
265	FREETMPS;
266	LEAVE;
267
268	errno = errorno;
269	}
270
271	static void req_free (aio_req req)
272	{
273	if (req->grp)
274	{
275	aio_req grp = req->grp;
276
277	/* unlink request */
278	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
279	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
280
281	if (grp->grp_first == req)
282	grp->grp_first = req->grp_next;
283
284	--grp->length;
285
286	/* call feeder, if applicable */
287	aio_grp_feed (grp);
288
289	/* finish, if done */
290	if (!grp->length && grp->fd)
291	{
292	req_invoke (grp);
293	req_free (grp);
294	}
295	}
296
297	if (req->self)	620	if (req->self)
298	{	621	{
299	sv_unmagic (req->self, PERL_MAGIC_ext);	622	sv_unmagic (req->self, PERL_MAGIC_ext);
300	SvREFCNT_dec (req->self);	623	SvREFCNT_dec (req->self);
301	}	624	}
302		625
303	SvREFCNT_dec (req->data);
304	SvREFCNT_dec (req->fh);	626	SvREFCNT_dec (req->sv1);
305	SvREFCNT_dec (req->fh2);	627	SvREFCNT_dec (req->sv2);
		628	SvREFCNT_dec (req->sv3);
		629	SvREFCNT_dec (req->sv4);
306	SvREFCNT_dec (req->callback);	630	SvREFCNT_dec (req->callback);
307	Safefree (req->statdata);
308		631
309	if (req->type == REQ_READDIR && req->result >= 0)
310	free (req->data2ptr);
311
312	Safefree (req);	632	free (req);
313	}	633	}
314		634
315	static void req_cancel (aio_req req)	635	static void
		636	req_cancel_subs (aio_req grp)
316	{	637	{
317	req->cancelled = 1;
318
319	if (req->type == REQ_GROUP)	638	if (grp->type != EIO_GROUP)
		639	return;
		640
		641	SvREFCNT_dec (grp->sv2);
		642	grp->sv2 = 0;
		643
		644	eio_grp_cancel (grp);
		645	}
		646
		647	static void ecb_cold
		648	create_respipe (void)
		649	{
		650	if (s_epipe_renew (&respipe))
		651	croak ("IO::AIO: unable to initialize result pipe");
		652	}
		653
		654	static void
		655	poll_wait (void)
		656	{
		657	while (eio_nreqs ())
320	{	658	{
321	aio_req sub;	659	int size;
322		660
323	for (sub = req->grp_first; sub; sub = sub->grp_next)	661	X_LOCK (reslock);
324	req_cancel (sub);	662	size = res_queue.size;
		663	X_UNLOCK (reslock);
		664
		665	if (size)
		666	return;
		667
		668	etp_maybe_start_thread ();
		669
		670	s_epipe_wait (&respipe);
325	}	671	}
326	}	672	}
327		673
328	static int poll_cb ()	674	static int
		675	poll_cb (void)
329	{	676	{
330	dSP;
331	int count = 0;
332	int do_croak = 0;
333	aio_req req;
334
335	for (;;)	677	for (;;)
336	{	678	{
337	pthread_mutex_lock (&reslock);	679	int res = eio_poll ();
338	req = ress;
339		680
340	if (req)	681	if (res > 0)
		682	croak (0);
		683
		684	if (!max_outstanding || max_outstanding > eio_nreqs ())
		685	return res;
		686
		687	poll_wait ();
		688	}
		689	}
		690
		691	static void ecb_cold
		692	reinit (void)
		693	{
		694	create_respipe ();
		695
		696	if (eio_init (want_poll, done_poll) < 0)
		697	croak ("IO::AIO: unable to initialise eio library");
		698	}
		699
		700	/*****************************************************************************/
		701
		702	#if !_POSIX_MAPPED_FILES
		703	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		704	# define munmap(addr,length) EIO_ENOSYS ()
		705	#endif
		706
		707	#if !_POSIX_MEMORY_PROTECTION
		708	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		709	# define PROT_NONE 0
		710	# define PROT_WRITE 0
		711	# define MAP_PRIVATE 0
		712	# define MAP_SHARED 0
		713	# define MAP_FIXED 0
		714	#endif
		715
		716	#define MMAP_MAGIC PERL_MAGIC_ext
		717
		718	static int ecb_cold
		719	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		720	{
		721	int old_errno = errno;
		722	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		723	errno = old_errno;
		724
		725	mg->mg_obj = 0; /* just in case */
		726
		727	SvREADONLY_off (sv);
		728
		729	if (SvPVX (sv) != mg->mg_ptr)
		730	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		731
		732	SvCUR_set (sv, 0);
		733	SvPVX (sv) = 0;
		734	SvOK_off (sv);
		735
		736	return 0;
		737	}
		738
		739	static MGVTBL mmap_vtbl = {
		740	0, 0, 0, 0, mmap_free
		741	};
		742
		743	/*****************************************************************************/
		744
		745	static SV *
		746	get_cb (SV *cb_sv)
		747	{
		748	SvGETMAGIC (cb_sv);
		749	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		750	}
		751
		752	static aio_req ecb_noinline
		753	dreq (SV *callback)
		754	{
		755	SV *cb_cv;
		756	aio_req req;
		757	int req_pri = next_pri;
		758	next_pri = EIO_PRI_DEFAULT;
		759
		760	cb_cv = get_cb (callback);
		761
		762	req = calloc (sizeof (*req), 1);
		763	if (!req)
		764	croak ("out of memory during eio_req allocation");
		765
		766	req->callback = SvREFCNT_inc (cb_cv);
		767	req->pri = req_pri;
		768
		769	return req;
		770	}
		771
		772	#define dREQ \
		773	aio_req req = dreq (callback); \
		774
		775	#define REQ_SEND \
		776	PUTBACK; \
		777	req_submit (req); \
		778	SPAGAIN; \
		779	\
		780	if (GIMME_V != G_VOID) \
		781	XPUSHs (req_sv (req, aio_req_stash));
		782
		783	ecb_inline void
		784	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		785	{
		786	if (expect_false (SvROK (path)))
		787	{
		788	SV *rv = SvRV (path);
		789	SV *wdob;
		790
		791	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
341	{	792	{
342	ress = req->next;	793	path = AvARRAY (rv)[1];
		794	wdob = AvARRAY (rv)[0];
343		795
344	if (!ress)	796	if (SvOK (wdob))
345	{	797	{
346	/* read any signals sent by the worker threads */	798	*wd = SvAIO_WD (wdob);
347	char buf [32];	799	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
348	while (read (respipe [0], buf, 32) == 32)
349	;
350
351	rese = 0;
352	}	800	}
		801	else
		802	*wd = EIO_INVALID_WD;
353	}	803	}
354		804	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
355	pthread_mutex_unlock (&reslock);
356
357	if (!req)
358	break;
359
360	nreqs--;
361
362	if (req->type == REQ_QUIT)
363	started--;
364	else if (req->type == REQ_GROUP && req->length)
365	{	805	{
366	req->fd = 1; /* mark request as delayed */	806	*wd = (aio_wd)(long)SvIVX (rv);
367	continue;	807	*wdsv = SvREFCNT_inc_NN (rv);
		808	*ptr = ".";
		809	return; /* path set to "." */
368	}	810	}
369	else	811	else
370	{	812	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
371	if (req->type == REQ_READ)
372	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
373
374	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
375	SvREADONLY_off (req->data);
376
377	if (req->statdata)
378	{
379	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
380	PL_laststatval = req->result;
381	PL_statcache = *(req->statdata);
382	}
383
384	req_invoke (req);
385
386	count++;
387	}
388
389	req_free (req);
390	}	813	}
391		814
392	return count;	815	*pathsv = newSVsv (path);
		816	*ptr = SvPVbyte_nolen (*pathsv);
393	}	817	}
394		818
395	static void *aio_proc(void *arg);	819	static void ecb_noinline
396		820	req_set_path1 (aio_req req, SV *path)
397	static void start_thread (void)
398	{	821	{
399	sigset_t fullsigset, oldsigset;	822	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
400	pthread_t tid;
401	pthread_attr_t attr;
402
403	pthread_attr_init (&attr);
404	pthread_attr_setstacksize (&attr, STACKSIZE);
405	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
406
407	sigfillset (&fullsigset);
408	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
409
410	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
411	started++;
412
413	sigprocmask (SIG_SETMASK, &oldsigset, 0);
414	}	823	}
415		824
416	static void req_send (aio_req req)	825	static void ecb_noinline
		826	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
417	{	827	{
418	while (started < wanted && nreqs >= started)	828	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
419	start_thread ();
420		829
421	nreqs++;	830	switch (SvTYPE (rv))
422
423	pthread_mutex_lock (&reqlock);
424
425	req->next = 0;
426
427	if (reqe)
428	{	831	{
429	reqe->next = req;	832	case SVt_PVIO:
430	reqe = req;	833	case SVt_PVLV:
		834	case SVt_PVGV:
		835	req->type = type_fh;
		836	req->sv1 = newSVsv (fh_or_path);
		837	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		838	break;
		839
		840	default:
		841	req->type = type_path;
		842	req_set_path1 (req, fh_or_path);
		843	break;
431	}	844	}
432	else
433	reqe = reqs = req;
434
435	pthread_cond_signal (&reqwait);
436	pthread_mutex_unlock (&reqlock);
437
438	if (nreqs > max_outstanding)
439	for (;;)
440	{
441	poll_cb ();
442
443	if (nreqs <= max_outstanding)
444	break;
445
446	poll_wait ();
447	}
448	}	845	}
449		846
450	static void end_thread (void)	847	XS(boot_IO__AIO) ecb_cold;
451	{
452	aio_req req;
453	Newz (0, req, 1, aio_cb);
454	req->type = REQ_QUIT;
455		848
456	req_send (req);	849	MODULE = IO::AIO PACKAGE = IO::AIO
457	}
458		850
459	static void min_parallel (int nthreads)	851	PROTOTYPES: ENABLE
460	{
461	if (wanted < nthreads)
462	wanted = nthreads;
463	}
464		852
465	static void max_parallel (int nthreads)	853	BOOT:
466	{	854	{
467	int cur = started;	855	static const struct {
		856	const char *name;
		857	IV iv;
		858	} *civ, const_iv[] = {
		859	# define const_niv(name, value) { # name, (IV) value },
		860	# define const_iv(name) { # name, (IV) name },
		861	# define const_eio(name) { # name, (IV) EIO_ ## name },
468		862
469	if (wanted > nthreads)	863	/* you have to re-run ./gendef0 after adding/Removing any constants here */
470	wanted = nthreads;
471		864
472	while (cur > wanted)	865	const_iv (ENOSYS)
473	{	866	const_iv (EXDEV)
474	end_thread ();	867	const_iv (EBADR)
475	cur--;
476	}
477		868
478	while (started > wanted)	869	const_iv (O_RDONLY)
479	{	870	const_iv (O_WRONLY)
480	poll_wait ();	871	const_iv (O_RDWR)
481	poll_cb ();	872	const_iv (O_CREAT)
482	}	873	const_iv (O_TRUNC)
483	}	874	const_iv (O_EXCL)
		875	const_iv (O_APPEND)
484		876
485	static void create_pipe ()	877	const_iv (O_ASYNC)
486	{	878	const_iv (O_DIRECT)
487	if (pipe (respipe))	879	const_iv (O_NOATIME)
488	croak ("unable to initialize result pipe");
489		880
490	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	881	const_iv (O_CLOEXEC)
491	croak ("cannot set result pipe to nonblocking mode");	882	const_iv (O_NOCTTY)
		883	const_iv (O_NOFOLLOW)
		884	const_iv (O_NONBLOCK)
		885	const_iv (O_EXEC)
		886	const_iv (O_SEARCH)
		887	const_iv (O_DIRECTORY)
		888	const_iv (O_DSYNC)
		889	const_iv (O_RSYNC)
		890	const_iv (O_SYNC)
		891	const_iv (O_TTY_INIT)
492		892
493	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	893	const_iv (S_IFIFO)
494	croak ("cannot set result pipe to nonblocking mode");	894	const_iv (S_IFCHR)
495	}	895	const_iv (S_IFBLK)
		896	const_iv (S_IFLNK)
		897	const_iv (S_IFREG)
		898	const_iv (S_IFDIR)
		899	const_iv (S_IFWHT)
		900	const_iv (S_IFSOCK)
		901	const_iv (S_IFMT)
496		902
497	/*****************************************************************************/	903	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
498	/* work around various missing functions */	904	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		905	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		906	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		907	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		908	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
499		909
500	#if !HAVE_PREADWRITE	910	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
501	# define pread aio_pread	911	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
502	# define pwrite aio_pwrite	912	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		913	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		914	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
503		915
504	/*	916	const_iv (ST_RDONLY)
505	* make our pread/pwrite safe against themselves, but not against	917	const_iv (ST_NOSUID)
506	* normal read/write by using a mutex. slows down execution a lot,	918	const_iv (ST_NODEV)
507	* but that's your problem, not mine.	919	const_iv (ST_NOEXEC)
508	*/	920	const_iv (ST_SYNCHRONOUS)
509	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	921	const_iv (ST_MANDLOCK)
		922	const_iv (ST_WRITE)
		923	const_iv (ST_APPEND)
		924	const_iv (ST_IMMUTABLE)
		925	const_iv (ST_NOATIME)
		926	const_iv (ST_NODIRATIME)
		927	const_iv (ST_RELATIME)
510		928
511	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	929	const_iv (PROT_NONE)
512	{	930	const_iv (PROT_EXEC)
513	ssize_t res;	931	const_iv (PROT_READ)
514	off_t ooffset;	932	const_iv (PROT_WRITE)
515		933
516	pthread_mutex_lock (&preadwritelock);	934	/*const_iv (MAP_FIXED)*/
517	ooffset = lseek (fd, 0, SEEK_CUR);	935	const_iv (MAP_PRIVATE)
518	lseek (fd, offset, SEEK_SET);	936	const_iv (MAP_SHARED)
519	res = read (fd, buf, count);	937	const_iv (MAP_ANONYMOUS)
520	lseek (fd, ooffset, SEEK_SET);
521	pthread_mutex_unlock (&preadwritelock);
522		938
523	return res;	939	/* linuxish */
524	}	940	const_iv (MAP_HUGETLB)
		941	const_iv (MAP_LOCKED)
		942	const_iv (MAP_NORESERVE)
		943	const_iv (MAP_POPULATE)
		944	const_iv (MAP_NONBLOCK)
525		945
526	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	946	const_iv (FIEMAP_FLAG_SYNC)
527	{	947	const_iv (FIEMAP_FLAG_XATTR)
528	ssize_t res;	948	const_iv (FIEMAP_FLAGS_COMPAT)
529	off_t ooffset;	949	const_iv (FIEMAP_EXTENT_LAST)
		950	const_iv (FIEMAP_EXTENT_UNKNOWN)
		951	const_iv (FIEMAP_EXTENT_DELALLOC)
		952	const_iv (FIEMAP_EXTENT_ENCODED)
		953	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		954	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		955	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		956	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		957	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		958	const_iv (FIEMAP_EXTENT_MERGED)
		959	const_iv (FIEMAP_EXTENT_SHARED)
530		960
531	pthread_mutex_lock (&preadwritelock);	961	const_iv (SPLICE_F_MOVE)
532	ooffset = lseek (fd, 0, SEEK_CUR);	962	const_iv (SPLICE_F_NONBLOCK)
533	lseek (fd, offset, SEEK_SET);	963	const_iv (SPLICE_F_MORE)
534	res = write (fd, buf, count);	964	const_iv (SPLICE_F_GIFT)
535	lseek (fd, offset, SEEK_SET);
536	pthread_mutex_unlock (&preadwritelock);
537		965
538	return res;	966	const_iv (SEEK_DATA)
539	}	967	const_iv (SEEK_HOLE)
540	#endif
541		968
542	#if !HAVE_FDATASYNC	969	/* libeio constants */
543	# define fdatasync fsync	970	const_eio (SEEK_SET)
544	#endif	971	const_eio (SEEK_CUR)
		972	const_eio (SEEK_END)
545		973
546	#if !HAVE_READAHEAD	974	const_eio (MCL_FUTURE)
547	# define readahead aio_readahead	975	const_eio (MCL_CURRENT)
548		976
549	static ssize_t readahead (int fd, off_t offset, size_t count)	977	const_eio (MS_ASYNC)
550	{	978	const_eio (MS_INVALIDATE)
551	char readahead_buf[4096];	979	const_eio (MS_SYNC)
552		980
553	while (count > 0)	981	const_eio (MT_MODIFY)
554	{
555	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
556		982
557	pread (fd, readahead_buf, len, offset);	983	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
558	offset += len;	984	const_eio (SYNC_FILE_RANGE_WRITE)
559	count -= len;	985	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
560	}
561		986
562	errno = 0;	987	const_eio (FALLOC_FL_KEEP_SIZE)
563	}
564	#endif
565		988
566	#if !HAVE_READDIR_R	989	const_eio (READDIR_DENTS)
567	# define readdir_r aio_readdir_r	990	const_eio (READDIR_DIRS_FIRST)
		991	const_eio (READDIR_STAT_ORDER)
		992	const_eio (READDIR_FOUND_UNKNOWN)
568		993
569	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	994	const_eio (DT_UNKNOWN)
570		995	const_eio (DT_FIFO)
571	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	996	const_eio (DT_CHR)
572	{	997	const_eio (DT_DIR)
573	struct dirent *e;	998	const_eio (DT_BLK)
574	int errorno;	999	const_eio (DT_REG)
575		1000	const_eio (DT_LNK)
576	pthread_mutex_lock (&readdirlock);	1001	const_eio (DT_SOCK)
577		1002	const_eio (DT_WHT)
578	e = readdir (dirp);
579	errorno = errno;
580
581	if (e)
582	{
583	*res = ent;
584	strcpy (ent->d_name, e->d_name);
585	}
586	else
587	*res = 0;
588
589	pthread_mutex_unlock (&readdirlock);
590
591	errno = errorno;
592	return e ? 0 : -1;
593	}
594	#endif
595
596	/* sendfile always needs emulation */
597	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
598	{
599	ssize_t res;
600
601	if (!count)
602	return 0;
603
604	#if HAVE_SENDFILE
605	# if __linux
606	res = sendfile (ofd, ifd, &offset, count);
607
608	# elif __freebsd
609	/*
610	* Of course, the freebsd sendfile is a dire hack with no thoughts
611	* wasted on making it similar to other I/O functions.
612	*/
613	{
614	off_t sbytes;
615	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
616
617	if (res < 0 && sbytes)
618	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
619	res = sbytes;
620	}	1003	};
621		1004
622	# elif __hpux	1005	aio_stash = gv_stashpv ("IO::AIO" , 1);
623	res = sendfile (ofd, ifd, offset, count, 0, 0);	1006	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1007	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1008	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
624		1009
625	# elif __solaris	1010	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
626	{	1011	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
627	struct sendfilevec vec;
628	size_t sbytes;
629		1012
630	vec.sfv_fd = ifd;	1013	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
631	vec.sfv_flag = 0;
632	vec.sfv_off = offset;
633	vec.sfv_len = count;
634		1014
635	res = sendfilev (ofd, &vec, 1, &sbytes);	1015	reinit ();
		1016	}
636		1017
637	if (res < 0 && sbytes)	1018	void
		1019	reinit ()
		1020	PROTOTYPE:
		1021
		1022	void
		1023	max_poll_reqs (unsigned int nreqs)
		1024	PROTOTYPE: $
		1025	CODE:
		1026	eio_set_max_poll_reqs (nreqs);
		1027
		1028	void
		1029	max_poll_time (double nseconds)
		1030	PROTOTYPE: $
		1031	CODE:
		1032	eio_set_max_poll_time (nseconds);
		1033
		1034	void
		1035	min_parallel (unsigned int nthreads)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_min_parallel (nthreads);
		1039
		1040	void
		1041	max_parallel (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_parallel (nthreads);
		1045
		1046	void
		1047	max_idle (unsigned int nthreads)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_max_idle (nthreads);
		1051
		1052	void
		1053	idle_timeout (unsigned int seconds)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	eio_set_idle_timeout (seconds);
		1057
		1058	void
		1059	max_outstanding (unsigned int maxreqs)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	max_outstanding = maxreqs;
		1063
		1064	void
		1065	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1066	PPCODE:
		1067	{
		1068	dREQ;
		1069
		1070	req->type = EIO_WD_OPEN;
		1071	req_set_path1 (req, pathname);
		1072
		1073	REQ_SEND;
		1074	}
		1075
		1076	void
		1077	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1078	PPCODE:
		1079	{
		1080	dREQ;
		1081
		1082	req->type = EIO_OPEN;
		1083	req_set_path1 (req, pathname);
		1084	req->int1 = flags;
		1085	req->int2 = mode;
		1086
		1087	REQ_SEND;
		1088	}
		1089
		1090	void
		1091	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_fsync = EIO_FSYNC
		1094	aio_fdatasync = EIO_FDATASYNC
		1095	aio_syncfs = EIO_SYNCFS
		1096	PPCODE:
		1097	{
		1098	int fd = s_fileno_croak (fh, 0);
		1099	dREQ;
		1100
		1101	req->type = ix;
		1102	req->sv1 = newSVsv (fh);
		1103	req->int1 = fd;
		1104
		1105	REQ_SEND;
		1106	}
		1107
		1108	void
		1109	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_SYNC_FILE_RANGE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->offs = offset;
638	res = sbytes;	1119	req->size = nbytes;
639	}	1120	req->int2 = flags;
640		1121
641	# endif	1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	int fd = s_fileno_croak (fh, 0);
		1130	dREQ;
		1131
		1132	req->type = EIO_FALLOCATE;
		1133	req->sv1 = newSVsv (fh);
		1134	req->int1 = fd;
		1135	req->int2 = mode;
		1136	req->offs = offset;
		1137	req->size = len;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
		1143	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1144	PPCODE:
		1145	{
		1146	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1147	int fd = s_fileno_croak (fh, 0);
		1148	dREQ;
		1149
		1150	if (expect_false (close_fd < 0))
		1151	{
		1152	int pipefd [2];
		1153
		1154	if (
		1155	#ifdef _WIN32
		1156	_pipe (pipefd, 1, _O_BINARY) < 0
642	#else	1157	#else
643	res = -1;	1158	pipe (pipefd) < 0
644	errno = ENOSYS;	1159	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
645	#endif	1160	#endif
646		1161	|| close (pipefd [1]) < 0
647	if (res < 0
648	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
649	#if __solaris
650	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
651	#endif
652	)
653	)
654	{
655	/* emulate sendfile. this is a major pain in the ass */
656	char buf[4096];
657	res = 0;
658
659	while (count)
660	{
661	ssize_t cnt;
662
663	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
664
665	if (cnt <= 0)
666	{	1162	)
667	if (cnt && !res) res = -1;	1163	abort (); /*D*/
668	break;
669	}
670		1164
671	cnt = write (ofd, buf, cnt);	1165	close_fd = pipefd [0];
672
673	if (cnt <= 0)
674	{
675	if (cnt && !res) res = -1;
676	break;
677	}
678
679	offset += cnt;
680	res += cnt;
681	count -= cnt;
682	}
683	}
684
685	return res;
686	}
687
688	/* read a full directory */
689	static int scandir_ (const char *path, void **namesp)
690	{
691	DIR *dirp = opendir (path);
692	union
693	{
694	struct dirent d;
695	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
696	} u;
697	struct dirent *entp;
698	char *name, *names;
699	int memlen = 4096;
700	int memofs = 0;
701	int res = 0;
702	int errorno;
703
704	if (!dirp)
705	return -1;
706
707	names = malloc (memlen);
708
709	for (;;)
710	{
711	errno = 0, readdir_r (dirp, &u.d, &entp);
712
713	if (!entp)
714	break;
715
716	name = entp->d_name;
717
718	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
719	{
720	int len = strlen (name) + 1;
721
722	res++;
723
724	while (memofs + len > memlen)
725	{
726	memlen *= 2;
727	names = realloc (names, memlen);
728	if (!names)
729	break;
730	}
731
732	memcpy (names + memofs, name, len);
733	memofs += len;
734	}
735	}
736
737	errorno = errno;
738	closedir (dirp);
739
740	if (errorno)
741	{
742	free (names);
743	errno = errorno;
744	res = -1;
745	}
746
747	*namesp = (void *)names;
748	return res;
749	}
750
751	/*****************************************************************************/
752
753	static void *aio_proc (void *thr_arg)
754	{
755	aio_req req;
756	int type;
757
758	do
759	{
760	pthread_mutex_lock (&reqlock);
761
762	for (;;)
763	{
764	req = reqs;
765
766	if (reqs)
767	{
768	reqs = reqs->next;
769	if (!reqs) reqe = 0;
770	}
771
772	if (req)
773	break;
774
775	pthread_cond_wait (&reqwait, &reqlock);
776	}
777
778	pthread_mutex_unlock (&reqlock);
779
780	errno = 0; /* strictly unnecessary */
781
782	if (!req->cancelled)
783	switch (req->type)
784	{
785	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
786	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
787
788	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
789	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
790
791	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
792	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
793	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
794
795	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
796	case REQ_CLOSE: req->result = close (req->fd); break;
797	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
798	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
799	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
800	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
801	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
802
803	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
804	case REQ_FSYNC: req->result = fsync (req->fd); break;
805	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
806
807	case REQ_SLEEP:
808	{
809	struct timeval tv;
810
811	tv.tv_sec = req->fd;
812	tv.tv_usec = req->fd2;
813
814	req->result = select (0, 0, 0, 0, &tv);
815	}
816
817	case REQ_QUIT:
818	break;
819
820	default:
821	req->result = ENOSYS;
822	break;
823	}	1166	}
824		1167
825	req->errorno = errno;	1168	req->type = EIO_DUP2;
826		1169	req->int1 = close_fd;
827	pthread_mutex_lock (&reslock);	1170	req->sv2 = newSVsv (fh);
828
829	req->next = 0;	1171	req->int2 = fd;
830		1172
831	if (rese)	1173	REQ_SEND;
832	{
833	rese->next = req;
834	rese = req;
835	}
836	else
837	{
838	rese = ress = req;
839
840	/* write a dummy byte to the pipe so fh becomes ready */
841	write (respipe [1], &respipe, 1);
842	}
843
844	pthread_mutex_unlock (&reslock);
845	}
846	while (type != REQ_QUIT);
847
848	return 0;
849	}	1174	}
850		1175
851	/*****************************************************************************/
852
853	static void atfork_prepare (void)
854	{
855	pthread_mutex_lock (&reqlock);
856	pthread_mutex_lock (&reslock);
857	#if !HAVE_PREADWRITE
858	pthread_mutex_lock (&preadwritelock);
859	#endif
860	#if !HAVE_READDIR_R
861	pthread_mutex_lock (&readdirlock);
862	#endif
863	}
864
865	static void atfork_parent (void)
866	{
867	#if !HAVE_READDIR_R
868	pthread_mutex_unlock (&readdirlock);
869	#endif
870	#if !HAVE_PREADWRITE
871	pthread_mutex_unlock (&preadwritelock);
872	#endif
873	pthread_mutex_unlock (&reslock);
874	pthread_mutex_unlock (&reqlock);
875	}
876
877	static void atfork_child (void)
878	{
879	aio_req prv;
880
881	started = 0;
882
883	while (reqs)
884	{
885	prv = reqs;
886	reqs = prv->next;
887	req_free (prv);
888	}
889
890	reqs = reqe = 0;
891
892	while (ress)
893	{
894	prv = ress;
895	ress = prv->next;
896	req_free (prv);
897	}
898
899	ress = rese = 0;
900
901	close (respipe [0]);
902	close (respipe [1]);
903	create_pipe ();
904
905	atfork_parent ();
906	}
907
908	#define dREQ \
909	aio_req req; \
910	\
911	if (SvOK (callback) && !SvROK (callback)) \
912	croak ("callback must be undef or of reference type"); \
913	\
914	Newz (0, req, 1, aio_cb); \
915	if (!req) \
916	croak ("out of memory during aio_req allocation"); \
917	\
918	req->callback = newSVsv (callback)
919
920	#define REQ_SEND \
921	req_send (req); \
922	\
923	if (GIMME_V != G_VOID) \
924	XPUSHs (req_sv (req, AIO_REQ_KLASS));
925
926	MODULE = IO::AIO PACKAGE = IO::AIO
927
928	PROTOTYPES: ENABLE
929
930	BOOT:
931	{
932	HV *stash = gv_stashpv ("IO::AIO", 1);
933	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
934	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
935	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
936
937	create_pipe ();
938	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
939	}
940
941	void	1176	void
942	min_parallel (nthreads)	1177	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
943	int nthreads
944	PROTOTYPE: $
945
946	void
947	max_parallel (nthreads)
948	int nthreads
949	PROTOTYPE: $
950
951	int
952	max_outstanding (nreqs)
953	int nreqs
954	PROTOTYPE: $
955	CODE:	1178	PPCODE:
956	RETVAL = max_outstanding;
957	max_outstanding = nreqs;
958
959	void
960	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
961	SV * pathname
962	int flags
963	int mode
964	SV * callback
965	PROTOTYPE: $$$;$
966	PPCODE:
967	{	1179	{
		1180	int fd = s_fileno_croak (fh, 0);
968	dREQ;	1181	dREQ;
969		1182
970	req->type = REQ_OPEN;	1183	req->type = EIO_SEEK;
971	req->data = newSVsv (pathname);	1184	req->sv1 = newSVsv (fh);
972	req->dataptr = SvPVbyte_nolen (req->data);	1185	req->int1 = fd;
973	req->fd = flags;	1186	req->offs = SvVAL64 (offset);
974	req->mode = mode;	1187	req->int2 = whence;
975		1188
976	REQ_SEND;	1189	REQ_SEND;
977	}	1190	}
978		1191
979	void	1192	void
980	aio_close (fh,callback=&PL_sv_undef)	1193	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
981	SV * fh
982	SV * callback
983	PROTOTYPE: $;$
984	ALIAS:	1194	ALIAS:
985	aio_close = REQ_CLOSE
986	aio_fsync = REQ_FSYNC
987	aio_fdatasync = REQ_FDATASYNC
988	PPCODE:
989	{
990	dREQ;
991
992	req->type = ix;
993	req->fh = newSVsv (fh);
994	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
995
996	REQ_SEND (req);
997	}
998
999	void
1000	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1001	SV * fh
1002	UV offset
1003	UV length
1004	SV * data
1005	UV dataoffset
1006	SV * callback
1007	ALIAS:
1008	aio_read = REQ_READ	1195	aio_read = EIO_READ
1009	aio_write = REQ_WRITE	1196	aio_write = EIO_WRITE
1010	PROTOTYPE: $$$$$;$
1011	PPCODE:	1197	PPCODE:
1012	{	1198	{
1013	aio_req req;
1014	STRLEN svlen;	1199	STRLEN svlen;
		1200	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1015	char *svptr = SvPVbyte (data, svlen);	1201	char *svptr = SvPVbyte (data, svlen);
1016		1202	UV len = SvUV (length);
1017	SvUPGRADE (data, SVt_PV);
1018	SvPOK_on (data);
1019		1203
1020	if (dataoffset < 0)	1204	if (dataoffset < 0)
1021	dataoffset += svlen;	1205	dataoffset += svlen;
1022		1206
1023	if (dataoffset < 0 || dataoffset > svlen)	1207	if (dataoffset < 0 || dataoffset > svlen)
1024	croak ("data offset outside of string");	1208	croak ("dataoffset outside of data scalar");
1025		1209
1026	if (ix == REQ_WRITE)	1210	if (ix == EIO_WRITE)
1027	{	1211	{
1028	/* write: check length and adjust. */	1212	/* write: check length and adjust. */
1029	if (length < 0 || length + dataoffset > svlen)	1213	if (!SvOK (length) || len + dataoffset > svlen)
1030	length = svlen - dataoffset;	1214	len = svlen - dataoffset;
1031	}	1215	}
1032	else	1216	else
1033	{	1217	{
1034	/* read: grow scalar as necessary */	1218	/* read: check type and grow scalar as necessary */
		1219	SvUPGRADE (data, SVt_PV);
1035	svptr = SvGROW (data, length + dataoffset);	1220	svptr = SvGROW (data, len + dataoffset + 1);
1036	}	1221	}
1037
1038	if (length < 0)
1039	croak ("length must not be negative");
1040		1222
1041	{	1223	{
1042	dREQ;	1224	dREQ;
1043		1225
1044	req->type = ix;	1226	req->type = ix;
1045	req->fh = newSVsv (fh);	1227	req->sv1 = newSVsv (fh);
1046	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1228	req->int1 = fd;
1047	: IoOFP (sv_2io (fh)));	1229	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1048	req->offset = offset;	1230	req->size = len;
1049	req->length = length;
1050	req->data = SvREFCNT_inc (data);	1231	req->sv2 = SvREFCNT_inc (data);
1051	req->dataptr = (char *)svptr + dataoffset;	1232	req->ptr2 = (char *)svptr + dataoffset;
		1233	req->stroffset = dataoffset;
1052		1234
1053	if (!SvREADONLY (data))	1235	if (!SvREADONLY (data))
1054	{	1236	{
1055	SvREADONLY_on (data);	1237	SvREADONLY_on (data);
1056	req->data2ptr = (void *)data;	1238	req->flags |= FLAG_SV2_RO_OFF;
1057	}	1239	}
1058		1240
1059	REQ_SEND;	1241	REQ_SEND;
1060	}	1242	}
1061	}	1243	}
1062		1244
1063	void	1245	void
1064	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1246	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1065	SV * out_fh	1247	ALIAS:
1066	SV * in_fh	1248	aio_readlink = EIO_READLINK
1067	UV in_offset	1249	aio_realpath = EIO_REALPATH
1068	UV length
1069	SV * callback
1070	PROTOTYPE: $$$$;$
1071	PPCODE:	1250	PPCODE:
1072	{	1251	{
		1252	dREQ;
		1253
		1254	req->type = ix;
		1255	req_set_path1 (req, pathname);
		1256
		1257	REQ_SEND;
		1258	}
		1259
		1260	void
		1261	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1262	PPCODE:
		1263	{
		1264	int ifd = s_fileno_croak (in_fh , 0);
		1265	int ofd = s_fileno_croak (out_fh, 1);
1073	dREQ;	1266	dREQ;
1074		1267
1075	req->type = REQ_SENDFILE;	1268	req->type = EIO_SENDFILE;
1076	req->fh = newSVsv (out_fh);	1269	req->sv1 = newSVsv (out_fh);
1077	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1270	req->int1 = ofd;
1078	req->fh2 = newSVsv (in_fh);	1271	req->sv2 = newSVsv (in_fh);
1079	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1272	req->int2 = ifd;
1080	req->offset = in_offset;	1273	req->offs = in_offset;
1081	req->length = length;	1274	req->size = length;
1082		1275
1083	REQ_SEND;	1276	REQ_SEND;
1084	}	1277	}
1085		1278
1086	void	1279	void
1087	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1280	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1088	SV * fh
1089	UV offset
1090	IV length
1091	SV * callback
1092	PROTOTYPE: $$$;$
1093	PPCODE:	1281	PPCODE:
1094	{	1282	{
		1283	int fd = s_fileno_croak (fh, 0);
1095	dREQ;	1284	dREQ;
1096		1285
1097	req->type = REQ_READAHEAD;	1286	req->type = EIO_READAHEAD;
1098	req->fh = newSVsv (fh);	1287	req->sv1 = newSVsv (fh);
1099	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1288	req->int1 = fd;
1100	req->offset = offset;	1289	req->offs = offset;
1101	req->length = length;	1290	req->size = length;
1102		1291
1103	REQ_SEND;	1292	REQ_SEND;
1104	}	1293	}
1105		1294
1106	void	1295	void
1107	aio_stat (fh_or_path,callback=&PL_sv_undef)	1296	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1108	SV * fh_or_path
1109	SV * callback
1110	ALIAS:	1297	ALIAS:
1111	aio_stat = REQ_STAT	1298	aio_stat = EIO_STAT
1112	aio_lstat = REQ_LSTAT	1299	aio_lstat = EIO_LSTAT
		1300	aio_statvfs = EIO_STATVFS
1113	PPCODE:	1301	PPCODE:
1114	{	1302	{
1115	dREQ;	1303	dREQ;
1116		1304
1117	New (0, req->statdata, 1, Stat_t);	1305	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1118	if (!req->statdata)
1119	{
1120	req_free (req);
1121	croak ("out of memory during aio_req->statdata allocation");
1122	}
1123
1124	if (SvPOK (fh_or_path))
1125	{
1126	req->type = ix;
1127	req->data = newSVsv (fh_or_path);
1128	req->dataptr = SvPVbyte_nolen (req->data);
1129	}
1130	else
1131	{
1132	req->type = REQ_FSTAT;
1133	req->fh = newSVsv (fh_or_path);
1134	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1135	}
1136		1306
1137	REQ_SEND;	1307	REQ_SEND;
1138	}	1308	}
1139		1309
		1310	UV
		1311	major (UV dev)
		1312	ALIAS:
		1313	minor = 1
		1314	CODE:
		1315	RETVAL = ix ? major (dev) : minor (dev);
		1316	OUTPUT:
		1317	RETVAL
		1318
		1319	UV
		1320	makedev (UV maj, UV min)
		1321	CODE:
		1322	RETVAL = makedev (maj, min);
		1323	OUTPUT:
		1324	RETVAL
		1325
1140	void	1326	void
		1327	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1328	PPCODE:
		1329	{
		1330	dREQ;
		1331
		1332	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1333	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1334	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
		1340	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1341	PPCODE:
		1342	{
		1343	dREQ;
		1344
		1345	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1346	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1347
		1348	REQ_SEND;
		1349	}
		1350
		1351	void
		1352	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1353	PPCODE:
		1354	{
		1355	dREQ;
		1356
		1357	req->int2 = mode;
		1358	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1359
		1360	REQ_SEND;
		1361	}
		1362
		1363	void
		1364	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1365	PPCODE:
		1366	{
		1367	dREQ;
		1368
		1369	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1370	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1371	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1372
		1373	REQ_SEND;
		1374	}
		1375
		1376	void
		1377	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1378	PPCODE:
		1379	{
		1380	dREQ;
		1381
		1382	req->type = EIO_READDIR;
		1383	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1384
		1385	if (flags & EIO_READDIR_DENTS)
		1386	req->int1 |= EIO_READDIR_CUSTOM2;
		1387
		1388	req_set_path1 (req, pathname);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->type = EIO_MKDIR;
		1400	req->int2 = mode;
		1401	req_set_path1 (req, pathname);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
1141	aio_unlink (pathname,callback=&PL_sv_undef)	1407	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1142	SV * pathname
1143	SV * callback
1144	ALIAS:	1408	ALIAS:
1145	aio_unlink = REQ_UNLINK	1409	aio_unlink = EIO_UNLINK
1146	aio_rmdir = REQ_RMDIR	1410	aio_rmdir = EIO_RMDIR
1147	aio_readdir = REQ_READDIR	1411	aio_readdir = EIO_READDIR
1148	PPCODE:	1412	PPCODE:
1149	{	1413	{
1150	dREQ;	1414	dREQ;
1151		1415
1152	req->type = ix;	1416	req->type = ix;
1153	req->data = newSVsv (pathname);	1417	req_set_path1 (req, pathname);
1154	req->dataptr = SvPVbyte_nolen (req->data);	1418
1155
1156	REQ_SEND;	1419	REQ_SEND;
1157	}	1420	}
1158		1421
1159	void	1422	void
1160	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1423	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1161	SV * oldpath
1162	SV * newpath
1163	SV * callback
1164	ALIAS:	1424	ALIAS:
1165	aio_link = REQ_LINK	1425	aio_link = EIO_LINK
1166	aio_symlink = REQ_SYMLINK	1426	aio_symlink = EIO_SYMLINK
1167	aio_rename = REQ_RENAME	1427	aio_rename = EIO_RENAME
1168	PPCODE:	1428	PPCODE:
1169	{	1429	{
		1430	eio_wd wd2 = 0;
1170	dREQ;	1431	dREQ;
1171		1432
1172	req->type = ix;	1433	req->type = ix;
1173	req->fh = newSVsv (oldpath);	1434	req_set_path1 (req, oldpath);
1174	req->data2ptr = SvPVbyte_nolen (req->fh);	1435	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1175	req->data = newSVsv (newpath);	1436	req->int3 = (long)wd2;
1176	req->dataptr = SvPVbyte_nolen (req->data);
1177		1437
1178	REQ_SEND;	1438	REQ_SEND;
1179	}	1439	}
1180		1440
1181	void	1441	void
1182	aio_sleep (delay,callback=&PL_sv_undef)	1442	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1183	double delay
1184	SV * callback
1185	PPCODE:	1443	PPCODE:
1186	{	1444	{
1187	dREQ;	1445	dREQ;
1188		1446
1189	req->type = REQ_SLEEP;	1447	req->type = EIO_MKNOD;
1190	req->fd = delay < 0. ? 0 : delay;	1448	req->int2 = (mode_t)mode;
1191	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1449	req->offs = dev;
1192		1450	req_set_path1 (req, pathname);
		1451
1193	REQ_SEND;	1452	REQ_SEND;
1194	}	1453	}
1195		1454
1196	void	1455	void
1197	aio_group (callback=&PL_sv_undef)	1456	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1198	SV * callback	1457	ALIAS:
1199	PROTOTYPE: ;$	1458	aio_mtouch = EIO_MTOUCH
		1459	aio_msync = EIO_MSYNC
1200	PPCODE:	1460	PPCODE:
1201	{	1461	{
		1462	STRLEN svlen;
		1463	char *svptr = SvPVbyte (data, svlen);
		1464	UV len = SvUV (length);
		1465
		1466	if (offset < 0)
		1467	offset += svlen;
		1468
		1469	if (offset < 0 || offset > svlen)
		1470	croak ("offset outside of scalar");
		1471
		1472	if (!SvOK (length) || len + offset > svlen)
		1473	len = svlen - offset;
		1474
		1475	{
		1476	dREQ;
		1477
		1478	req->type = ix;
		1479	req->sv2 = SvREFCNT_inc (data);
		1480	req->ptr2 = (char *)svptr + offset;
		1481	req->size = len;
		1482	req->int1 = flags;
		1483
		1484	REQ_SEND;
		1485	}
		1486	}
		1487
		1488	void
		1489	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1490	PPCODE:
		1491	{
		1492	STRLEN svlen;
		1493	char *svptr = SvPVbyte (data, svlen);
		1494	UV len = SvUV (length);
		1495
		1496	if (offset < 0)
		1497	offset += svlen;
		1498
		1499	if (offset < 0 || offset > svlen)
		1500	croak ("offset outside of scalar");
		1501
		1502	if (!SvOK (length) || len + offset > svlen)
		1503	len = svlen - offset;
		1504
		1505	{
		1506	dREQ;
		1507
		1508	req->type = EIO_MLOCK;
		1509	req->sv2 = SvREFCNT_inc (data);
		1510	req->ptr2 = (char *)svptr + offset;
		1511	req->size = len;
		1512
		1513	REQ_SEND;
		1514	}
		1515	}
		1516
		1517	void
		1518	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1519	PPCODE:
		1520	{
		1521	dREQ;
		1522
		1523	req->type = EIO_MLOCKALL;
		1524	req->int1 = flags;
		1525
		1526	REQ_SEND;
		1527	}
		1528
		1529	void
		1530	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1531	PPCODE:
		1532	{
		1533	int fd = s_fileno_croak (fh, 0);
1202	dREQ;	1534	dREQ;
		1535
		1536	req->type = EIO_CUSTOM;
		1537	req->sv1 = newSVsv (fh);
		1538	req->int1 = fd;
		1539
		1540	req->feed = fiemap;
		1541	#if HAVE_FIEMAP
		1542	/* keep our fingers crossed that the next two types are 64 bit */
		1543	req->offs = start;
		1544	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1545	req->int2 = flags;
		1546	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1547	#endif
		1548
		1549	REQ_SEND;
		1550	}
		1551
		1552	void
		1553	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1554	PPCODE:
		1555	{
		1556	dREQ;
		1557
		1558	req->type = EIO_BUSY;
		1559	req->nv1 = delay < 0. ? 0. : delay;
		1560
		1561	REQ_SEND;
		1562	}
		1563
		1564	void
		1565	aio_group (SV *callback=&PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
1203	req->type = REQ_GROUP;	1570	req->type = EIO_GROUP;
		1571
1204	req_send (req);	1572	req_submit (req);
1205	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1573	XPUSHs (req_sv (req, aio_grp_stash));
1206	}	1574	}
		1575
		1576	void
		1577	aio_nop (SV *callback=&PL_sv_undef)
		1578	ALIAS:
		1579	aio_nop = EIO_NOP
		1580	aio_sync = EIO_SYNC
		1581	PPCODE:
		1582	{
		1583	dREQ;
		1584
		1585	req->type = ix;
		1586
		1587	REQ_SEND;
		1588	}
		1589
		1590	int
		1591	aioreq_pri (int pri = 0)
		1592	CODE:
		1593	RETVAL = next_pri;
		1594	if (items > 0)
		1595	{
		1596	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1597	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1598	next_pri = pri;
		1599	}
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	aioreq_nice (int nice = 0)
		1605	CODE:
		1606	nice = next_pri - nice;
		1607	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1608	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1609	next_pri = nice;
1207		1610
1208	void	1611	void
1209	flush ()	1612	flush ()
1210	PROTOTYPE:
1211	CODE:	1613	CODE:
1212	while (nreqs)	1614	while (eio_nreqs ())
1213	{	1615	{
1214	poll_wait ();	1616	poll_wait ();
1215	poll_cb ();	1617	poll_cb ();
1216	}	1618	}
1217		1619
1218	void	1620	int
1219	poll()	1621	poll ()
1220	PROTOTYPE:
1221	CODE:	1622	CODE:
1222	if (nreqs)
1223	{
1224	poll_wait ();	1623	poll_wait ();
1225	poll_cb ();	1624	RETVAL = poll_cb ();
1226	}
1227
1228	int
1229	poll_fileno()
1230	PROTOTYPE:
1231	CODE:
1232	RETVAL = respipe [0];
1233	OUTPUT:	1625	OUTPUT:
1234	RETVAL	1626	RETVAL
1235		1627
1236	int	1628	int
		1629	poll_fileno ()
		1630	CODE:
		1631	RETVAL = s_epipe_fd (&respipe);
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	int
1237	poll_cb(...)	1636	poll_cb (...)
1238	PROTOTYPE:	1637	PROTOTYPE:
1239	CODE:	1638	CODE:
1240	RETVAL = poll_cb ();	1639	RETVAL = poll_cb ();
1241	OUTPUT:	1640	OUTPUT:
1242	RETVAL	1641	RETVAL
1243		1642
1244	void	1643	void
1245	poll_wait()	1644	poll_wait ()
1246	PROTOTYPE:
1247	CODE:	1645	CODE:
1248	if (nreqs)
1249	poll_wait ();	1646	poll_wait ();
1250		1647
1251	int	1648	int
1252	nreqs()	1649	nreqs ()
1253	PROTOTYPE:
1254	CODE:	1650	CODE:
1255	RETVAL = nreqs;	1651	RETVAL = eio_nreqs ();
1256	OUTPUT:	1652	OUTPUT:
1257	RETVAL	1653	RETVAL
1258		1654
		1655	int
		1656	nready ()
		1657	CODE:
		1658	RETVAL = eio_nready ();
		1659	OUTPUT:
		1660	RETVAL
		1661
		1662	int
		1663	npending ()
		1664	CODE:
		1665	RETVAL = eio_npending ();
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	nthreads ()
		1671	CODE:
		1672	RETVAL = eio_nthreads ();
		1673	OUTPUT:
		1674	RETVAL
		1675
		1676	int
		1677	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1678	CODE:
		1679	RETVAL = posix_fadvise (fh, offset, length, advice);
		1680	OUTPUT:
		1681	RETVAL
		1682
		1683	IV
		1684	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1685	CODE:
		1686	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1687	OUTPUT:
		1688	RETVAL
		1689
		1690	void
		1691	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1692	PPCODE:
		1693	sv_unmagic (scalar, MMAP_MAGIC);
		1694	{
		1695	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1696	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1697	if (addr == (void *)-1)
		1698	XSRETURN_NO;
		1699
		1700	sv_force_normal (scalar);
		1701
		1702	/* we store the length in mg_obj, as namlen is I32 :/ */
		1703	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1704	->mg_obj = (SV *)length;
		1705
		1706	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1707
		1708	if (!(prot & PROT_WRITE))
		1709	SvREADONLY_on (scalar);
		1710
		1711	if (SvLEN (scalar))
		1712	Safefree (SvPVX (scalar));
		1713
		1714	SvPVX (scalar) = (char *)addr;
		1715	SvCUR_set (scalar, length);
		1716	SvLEN_set (scalar, 0);
		1717	SvPOK_only (scalar);
		1718
		1719	XSRETURN_YES;
		1720	}
		1721
		1722	void
		1723	munmap (SV *scalar)
		1724	CODE:
		1725	sv_unmagic (scalar, MMAP_MAGIC);
		1726
		1727	int
		1728	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1729	ALIAS:
		1730	mprotect = 1
		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
		1749	switch (ix)
		1750	{
		1751	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1752	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1753	}
		1754	}
		1755	OUTPUT:
		1756	RETVAL
		1757
		1758	int
		1759	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1760	CODE:
		1761	{
		1762	STRLEN svlen;
		1763	void *addr = SvPVbyte (scalar, svlen);
		1764	size_t len = SvUV (length);
		1765
		1766	if (offset < 0)
		1767	offset += svlen;
		1768
		1769	if (offset < 0 || offset > svlen)
		1770	croak ("offset outside of scalar");
		1771
		1772	if (!SvOK (length) || len + offset > svlen)
		1773	len = svlen - offset;
		1774
		1775	addr = (void *)(((intptr_t)addr) + offset);
		1776	eio_page_align (&addr, &len);
		1777	#if _POSIX_MEMLOCK_RANGE
		1778	RETVAL = munlock (addr, len);
		1779	#else
		1780	RETVAL = EIO_ENOSYS ();
		1781	#endif
		1782	}
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786	int
		1787	munlockall ()
		1788	CODE:
		1789	#if _POSIX_MEMLOCK
		1790	munlockall ();
		1791	#else
		1792	RETVAL = EIO_ENOSYS ();
		1793	#endif
		1794	OUTPUT:
		1795	RETVAL
		1796
		1797	int
		1798	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1799	CODE:
		1800	{
		1801	#if HAVE_LINUX_SPLICE
		1802	loff_t off_in_, off_out_;
		1803	RETVAL = splice (
		1804	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1805	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1806	length, flags
		1807	);
		1808	#else
		1809	RETVAL = EIO_ENOSYS ();
		1810	#endif
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1817	CODE:
		1818	#if HAVE_LINUX_SPLICE
		1819	RETVAL = tee (rfh, wfh, length, flags);
		1820	#else
		1821	RETVAL = EIO_ENOSYS ();
		1822	#endif
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	void _on_next_submit (SV *cb)
		1827	CODE:
		1828	SvREFCNT_dec (on_next_submit);
		1829	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1830
1259	PROTOTYPES: DISABLE	1831	PROTOTYPES: DISABLE
1260		1832
		1833	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1834
		1835	BOOT:
		1836	{
		1837	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1838	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1839	}
		1840
		1841	void
		1842	DESTROY (SV *self)
		1843	CODE:
		1844	{
		1845	aio_wd wd = SvAIO_WD (self);
		1846	#if HAVE_AT
		1847	{
		1848	SV *callback = &PL_sv_undef;
		1849	dREQ; /* clobbers next_pri :/ */
		1850	next_pri = req->pri; /* restore next_pri */
		1851	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1852	req->type = EIO_WD_CLOSE;
		1853	req->wd = wd;
		1854	REQ_SEND;
		1855	}
		1856	#else
		1857	eio_wd_close_sync (wd);
		1858	#endif
		1859	}
		1860
1261	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1861	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1262		1862
1263	void	1863	void
1264	cancel (aio_req_ornot req)	1864	cancel (aio_req_ornot req)
1265	PROTOTYPE:
1266	CODE:	1865	CODE:
1267	req_cancel (req);	1866	eio_cancel (req);
		1867
		1868	void
		1869	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1870	PPCODE:
		1871	{
		1872	if (GIMME_V != G_VOID)
		1873	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1874
		1875	if (items > 1)
		1876	{
		1877	SV *cb_cv =get_cb (callback);
		1878
		1879	SvREFCNT_dec (req->callback);
		1880	req->callback = SvREFCNT_inc (cb_cv);
		1881	}
		1882	}
1268		1883
1269	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1884	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1270		1885
1271	void	1886	void
1272	add (aio_req grp, ...)	1887	add (aio_req grp, ...)
1273	PPCODE:	1888	PPCODE:
1274	{	1889	{
1275	int i;	1890	int i;
1276		1891
1277	if (grp->fd == 2)	1892	if (grp->int1 == 2)
1278	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1279		1894
1280	for (i = 1; i < items; ++i )	1895	for (i = 1; i < items; ++i )
1281	{	1896	{
		1897	aio_req req;
		1898
1282	if (GIMME_V != G_VOID)	1899	if (GIMME_V != G_VOID)
1283	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1900	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1284		1901
1285	aio_req req = SvAIO_REQ (ST (i));	1902	req = SvAIO_REQ (ST (i));
1286		1903
1287	if (req)	1904	if (req)
1288	{	1905	eio_grp_add (grp, req);
1289	++grp->length;
1290	req->grp = grp;
1291
1292	req->grp_prev = 0;
1293	req->grp_next = grp->grp_first;
1294
1295	if (grp->grp_first)
1296	grp->grp_first->grp_prev = req;
1297
1298	grp->grp_first = req;
1299	}
1300	}	1906	}
1301	}	1907	}
1302		1908
1303	void	1909	void
		1910	cancel_subs (aio_req_ornot req)
		1911	CODE:
		1912	req_cancel_subs (req);
		1913
		1914	void
1304	result (aio_req grp, ...)	1915	result (aio_req grp, ...)
		1916	CODE:
		1917	{
		1918	int i;
		1919	AV *av;
		1920
		1921	grp->errorno = errno;
		1922
		1923	av = newAV ();
		1924	av_extend (av, items - 1);
		1925
		1926	for (i = 1; i < items; ++i )
		1927	av_push (av, newSVsv (ST (i)));
		1928
		1929	SvREFCNT_dec (grp->sv1);
		1930	grp->sv1 = (SV *)av;
		1931	}
		1932
		1933	void
		1934	errno (aio_req grp, int errorno = errno)
		1935	CODE:
		1936	grp->errorno = errorno;
		1937
		1938	void
		1939	limit (aio_req grp, int limit)
1305	CODE:	1940	CODE:
1306	{	1941	eio_grp_limit (grp, limit);
1307	int i;
1308	AV *av = newAV ();
1309		1942
1310	for (i = 1; i < items; ++i )
1311	av_push (av, newSVsv (ST (i)));
1312
1313	SvREFCNT_dec (grp->data);
1314	grp->data = (SV *)av;
1315	}
1316
1317	void	1943	void
1318	feeder_limit (aio_req grp, int limit)	1944	feed (aio_req grp, SV *callback=&PL_sv_undef)
1319	CODE:	1945	CODE:
1320	grp->fd2 = limit;
1321	aio_grp_feed (grp);
1322
1323	void
1324	set_feeder (aio_req grp, SV *callback=&PL_sv_undef)
1325	CODE:
1326	{	1946	{
1327	SvREFCNT_dec (grp->fh2);	1947	SvREFCNT_dec (grp->sv2);
1328	grp->fh2 = newSVsv (callback);	1948	grp->sv2 = newSVsv (callback);
		1949	grp->feed = aio_grp_feed;
1329		1950
1330	if (grp->fd2 <= 0)	1951	if (grp->int2 <= 0)
1331	grp->fd2 = 2;	1952	grp->int2 = 2;
1332		1953
1333	aio_grp_feed (grp);	1954	eio_grp_limit (grp, grp->int2);
1334	}	1955	}
1335		1956

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