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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.58 by root, Mon Oct 23 18:48:08 2006 UTC vs.
Revision 1.210 by root, Fri Apr 6 11:39:25 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__
26	# include <sys/sendfile.h>	25	# include <linux/fs.h>
27	# elif __freebsd	26	# ifdef FS_IOC_FIEMAP
28	# include <sys/socket.h>	27	# include <linux/fiemap.h>
29	# include <sys/uio.h>	28	# define HAVE_FIEMAP 1
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>
34	# else
35	# error sendfile support requested but not available
36	# endif	29	# endif
37	#endif	30	#endif
38		31
39	/* used for struct dirent, AIX doesn't provide it */	32	/* perl namespace pollution */
40	#ifndef NAME_MAX	33	#undef VERSION
41	# define NAME_MAX 4096	34
		35	/* perl stupidly overrides readdir and maybe others */
		36	/* with thread-unsafe versions, imagine that :( */
		37	#undef readdir
		38	#undef opendir
		39	#undef closedir
		40
		41	#ifdef _WIN32
		42
		43	// perl overrides all those nice libc functions
		44
		45	#undef malloc
		46	#undef free
		47	#undef open
		48	#undef read
		49	#undef write
		50	#undef send
		51	#undef recv
		52	#undef stat
		53	#undef lstat
		54	#undef fstat
		55	#undef truncate
		56	#undef ftruncate
		57	#undef open
		58	#undef link
		59	#undef close
		60	#undef unlink
		61	#undef mkdir
		62	#undef rmdir
		63	#undef rename
		64	#undef lseek
		65	#undef opendir
		66	#undef readdir
		67	#undef closedir
		68	#undef chmod
		69	#undef fchmod
		70	#undef dup
		71	#undef dup2
		72	#undef abort
		73	#undef pipe
		74
		75	#define EIO_STRUCT_STAT struct _stati64
		76	#define EIO_STRUCT_STATI64
		77
		78	#else
		79
		80	#include <sys/time.h>
		81	#include <sys/select.h>
		82	#include <unistd.h>
		83	#include <utime.h>
		84	#include <signal.h>
		85
		86	#define EIO_STRUCT_STAT Stat_t
		87
42	#endif	88	#endif
43		89
44	#if __ia64	90	/*****************************************************************************/
45	# define STACKSIZE 65536	91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
46	#else	94	#else
47	# define STACKSIZE 8192	95	# define expect(expr,value) (expr)
48	#endif	96	#endif
49		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	#if !HAVE_POSIX_FADVISE
		129	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		130	#endif
		131
		132	#if !HAVE_POSIX_MADVISE
		133	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		134	#endif
		135
		136	#ifndef MAP_ANONYMOUS
		137	# ifdef MAP_ANON
		138	# define MAP_ANONYMOUS MAP_ANON
		139	# else
		140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		141	# endif
		142	#endif
		143
		144	/* defines all sorts of constants to 0 unless they are already defined */
		145	#include "def0.h"
		146
		147	#ifndef makedev
		148	# define makedev(maj,min) (((maj) << 8) | (min))
		149	#endif
		150	#ifndef major
		151	# define major(dev) ((dev) >> 8)
		152	#endif
		153	#ifndef minor
		154	# define minor(dev) ((dev) & 0xff)
		155	#endif
		156
		157	#ifndef PAGESIZE
		158	# define PAGESIZE sysconf (_SC_PAGESIZE)
		159	#endif
		160
		161	/*****************************************************************************/
		162
		163	static void
		164	fiemap (eio_req *req)
		165	{
		166	req->result = -1;
		167
		168	#if HAVE_FIEMAP
		169	for (;;)
		170	{
		171	int count = req->int3;
		172
		173	if (count < 0)
		174	{
		175	struct fiemap fiemap;
		176
		177	fiemap.fm_start = req->offs;
		178	fiemap.fm_length = req->size;
		179	fiemap.fm_flags = req->int2;
		180	fiemap.fm_extent_count = 0;
		181
		182	if (ioctl (req->int1, FS_IOC_FIEMAP, &fiemap))
		183	return;
		184
		185	count = fiemap.fm_mapped_extents;
		186	}
		187
		188	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		189	errno = ENOMEM;
		190	if (!fiemap)
		191	return;
		192
		193	req->ptr1 = fiemap;
		194	req->flags |= EIO_FLAG_PTR1_FREE;
		195
		196	fiemap->fm_start = req->offs;
		197	fiemap->fm_length = req->size;
		198	fiemap->fm_flags = req->int2;
		199	fiemap->fm_extent_count = count;
		200
		201	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		202	return;
		203
		204	if (req->int3 >= 0)
		205	break; /* when not autosizing we are done */
		206
		207	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		208	break; /* autosizing successful, we are done */
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
		215	#else
		216	errno = ENOSYS;
		217	#endif
		218	}
		219
		220	/*****************************************************************************/
		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_GROUP, REQ_NOP,
61	REQ_SLEEP,
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 pri;
89	unsigned char flags;
90	} aio_cb;
91
92	enum {
93	FLAG_CANCELLED = 0x01,
94	};
95
96	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
97	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
98		229
99	static int started, wanted;	230	static SV *on_next_submit;
100	static volatile int nreqs;	231	static int next_pri = EIO_PRI_DEFAULT;
101	static int max_outstanding = 1<<30;	232	static int max_outstanding;
102	static int respipe [2];
103		233
104	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	234	static s_epipe respipe;
105	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
106	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
107		235
108	static volatile aio_req reqs, reqe; /* queue start, queue end */	236	static void req_destroy (aio_req req);
109	static volatile aio_req ress, rese; /* queue start, queue end */
110
111	static void req_invoke (aio_req req);	237	static void req_cancel (aio_req req);
112	static void req_free (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	}
113		252
114	/* must be called at most once */	253	/* must be called at most once */
115	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
116	{	256	{
117	if (!req->self)	257	if (!req->self)
118	{	258	{
119	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
120	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
121	}	261	}
122		262
123	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
124	}	264	}
125		265
126	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
127	{	274	{
128	MAGIC *mg;	275	MAGIC *mg;
129		276
130	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	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")))
131	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
132		283
133	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
134		285
135	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
136	}	287	}
137		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
138	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
139	{	302	{
140	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
141	{	304	{
142	int old_len = grp->length;	305	dSP;
143		306
144	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))
145	{	356	{
146	dSP;	357	sv_result = sv_result_cache; sv_result_cache = 0;
147		358	SvIV_set (sv_result, req->result);
148	ENTER;	359	SvIOK_only (sv_result);
149	SAVETMPS;
150	PUSHMARK (SP);
151	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
152	PUTBACK;
153	call_sv (grp->fh2, G_VOID | G_EVAL);
154	SPAGAIN;
155	FREETMPS;
156	LEAVE;
157	}	360	}
158		361	else
159	/* stop if no progress has been made */
160	if (old_len == grp->length)
161	{	362	{
162	SvREFCNT_dec (grp->fh2);	363	sv_result = newSViv (req->result);
163	grp->fh2 = 0;	364	SvREADONLY_on (sv_result);
164	break;
165	}	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 (!req->result)
		551	{
		552	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		553
		554	if (fiemap->fm_extent_count)
		555	{
		556	AV *av = newAV ();
		557	int i;
		558
		559	while (fiemap->fm_mapped_extents)
		560	{
		561	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		562	AV *ext_av = newAV ();
		563
		564	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		565	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		566	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		567	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		568
		569	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		570	}
		571
		572	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		573	}
		574	else
		575	{
		576	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		577	PUSHs (sv_result);
		578	}
		579	}
		580	}
		581	else
		582	PUSHs (sv_result);
		583	break;
		584
		585	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		586	if (req->result > 0)
		587	SvIV_set (sv_result, 0);
		588	/* FALLTHROUGH */
		589
		590	default:
		591	PUSHs (sv_result);
		592	break;
		593	}
		594
		595	errno = req->errorno;
		596
		597	PUTBACK;
		598	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		599	SPAGAIN;
		600
		601	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		602	SvREFCNT_dec (sv_result);
		603	else
		604	sv_result_cache = sv_result;
		605
		606	FREETMPS;
		607	LEAVE;
		608
		609	PUTBACK;
166	}	610	}
167	}
168		611
169	static void aio_grp_dec (aio_req grp)	612	return !!SvTRUE (ERRSV);
170	{
171	--grp->length;
172
173	/* call feeder, if applicable */
174	aio_grp_feed (grp);
175
176	/* finish, if done */
177	if (!grp->length && grp->fd)
178	{
179	req_invoke (grp);
180	req_free (grp);
181	}
182	}	613	}
183		614
184	static void poll_wait ()	615	static void
		616	req_destroy (aio_req req)
185	{	617	{
186	if (nreqs && !ress)
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191
192	select (respipe [0] + 1, &rfd, 0, 0, 0);
193	}
194	}
195
196	static void req_invoke (aio_req req)
197	{
198	dSP;
199	int errorno = errno;
200
201	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
202	return;
203
204	errno = req->errorno;
205
206	ENTER;
207	SAVETMPS;
208	PUSHMARK (SP);
209	EXTEND (SP, 1);
210
211	switch (req->type)
212	{
213	case REQ_READDIR:
214	{
215	SV *rv = &PL_sv_undef;
216
217	if (req->result >= 0)
218	{
219	char *buf = req->data2ptr;
220	AV *av = newAV ();
221
222	while (req->result)
223	{
224	SV *sv = newSVpv (buf, 0);
225
226	av_push (av, sv);
227	buf += SvCUR (sv) + 1;
228	req->result--;
229	}
230
231	rv = sv_2mortal (newRV_noinc ((SV *)av));
232	}
233
234	PUSHs (rv);
235	}
236	break;
237
238	case REQ_OPEN:
239	{
240	/* convert fd to fh */
241	SV *fh;
242
243	PUSHs (sv_2mortal (newSViv (req->result)));
244	PUTBACK;
245	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
246	SPAGAIN;
247
248	fh = SvREFCNT_inc (POPs);
249
250	PUSHMARK (SP);
251	XPUSHs (sv_2mortal (fh));
252	}
253	break;
254
255	case REQ_GROUP:
256	req->fd = 2; /* mark group as finished */
257
258	if (req->data)
259	{
260	int i;
261	AV *av = (AV *)req->data;
262
263	EXTEND (SP, AvFILL (av) + 1);
264	for (i = 0; i <= AvFILL (av); ++i)
265	PUSHs (*av_fetch (av, i, 0));
266	}
267	break;
268
269	case REQ_NOP:
270	case REQ_SLEEP:
271	break;
272
273	default:
274	PUSHs (sv_2mortal (newSViv (req->result)));
275	break;
276	}
277
278
279	PUTBACK;
280	call_sv (req->callback, G_VOID | G_EVAL);
281	SPAGAIN;
282
283	FREETMPS;
284	LEAVE;
285
286	errno = errorno;
287
288	if (SvTRUE (ERRSV))
289	{
290	req_free (req);
291	croak (0);
292	}
293	}
294
295	static void req_free (aio_req req)
296	{
297	if (req->grp)
298	{
299	aio_req grp = req->grp;
300
301	/* unlink request */
302	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
303	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
304
305	if (grp->grp_first == req)
306	grp->grp_first = req->grp_next;
307
308	aio_grp_dec (grp);
309	}
310
311	if (req->self)	618	if (req->self)
312	{	619	{
313	sv_unmagic (req->self, PERL_MAGIC_ext);	620	sv_unmagic (req->self, PERL_MAGIC_ext);
314	SvREFCNT_dec (req->self);	621	SvREFCNT_dec (req->self);
315	}	622	}
316		623
317	SvREFCNT_dec (req->data);
318	SvREFCNT_dec (req->fh);	624	SvREFCNT_dec (req->sv1);
319	SvREFCNT_dec (req->fh2);	625	SvREFCNT_dec (req->sv2);
		626	SvREFCNT_dec (req->sv3);
		627	SvREFCNT_dec (req->sv4);
320	SvREFCNT_dec (req->callback);	628	SvREFCNT_dec (req->callback);
321	Safefree (req->statdata);
322		629
323	if (req->type == REQ_READDIR && req->result >= 0)
324	free (req->data2ptr);
325
326	Safefree (req);	630	free (req);
327	}	631	}
328		632
329	static void req_cancel (aio_req req)	633	static void
		634	req_cancel_subs (aio_req grp)
330	{	635	{
331	req->flags |= FLAG_CANCELLED;
332
333	if (req->type == REQ_GROUP)	636	if (grp->type != EIO_GROUP)
		637	return;
		638
		639	SvREFCNT_dec (grp->sv2);
		640	grp->sv2 = 0;
		641
		642	eio_grp_cancel (grp);
		643	}
		644
		645	static void ecb_cold
		646	create_respipe (void)
		647	{
		648	if (s_epipe_renew (&respipe))
		649	croak ("IO::AIO: unable to initialize result pipe");
		650	}
		651
		652	static void
		653	poll_wait (void)
		654	{
		655	while (eio_nreqs ())
334	{	656	{
335	aio_req sub;	657	int size;
336		658
337	for (sub = req->grp_first; sub; sub = sub->grp_next)	659	X_LOCK (reslock);
338	req_cancel (sub);	660	size = res_queue.size;
		661	X_UNLOCK (reslock);
		662
		663	if (size)
		664	return;
		665
		666	etp_maybe_start_thread ();
		667
		668	s_epipe_wait (&respipe);
339	}	669	}
340	}	670	}
341		671
342	static int poll_cb ()	672	static int
		673	poll_cb (void)
343	{	674	{
344	dSP;
345	int count = 0;
346	int do_croak = 0;
347	aio_req req;
348
349	for (;;)	675	for (;;)
350	{	676	{
351	pthread_mutex_lock (&reslock);	677	int res = eio_poll ();
352	req = ress;
353		678
354	if (req)	679	if (res > 0)
		680	croak (0);
		681
		682	if (!max_outstanding || max_outstanding > eio_nreqs ())
		683	return res;
		684
		685	poll_wait ();
		686	}
		687	}
		688
		689	static void ecb_cold
		690	reinit (void)
		691	{
		692	create_respipe ();
		693
		694	if (eio_init (want_poll, done_poll) < 0)
		695	croak ("IO::AIO: unable to initialise eio library");
		696	}
		697
		698	/*****************************************************************************/
		699
		700	#if !_POSIX_MAPPED_FILES
		701	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		702	# define munmap(addr,length) (errno = ENOSYS, -1)
		703	#endif
		704
		705	#if !_POSIX_MEMORY_PROTECTION
		706	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		707	# define PROT_NONE 0
		708	# define PROT_WRITE 0
		709	# define MAP_PRIVATE 0
		710	# define MAP_SHARED 0
		711	# define MAP_FIXED 0
		712	#endif
		713
		714	#define MMAP_MAGIC PERL_MAGIC_ext
		715
		716	static int ecb_cold
		717	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		718	{
		719	int old_errno = errno;
		720	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		721	errno = old_errno;
		722
		723	mg->mg_obj = 0; /* just in case */
		724
		725	SvREADONLY_off (sv);
		726
		727	if (SvPVX (sv) != mg->mg_ptr)
		728	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		729
		730	SvCUR_set (sv, 0);
		731	SvPVX (sv) = 0;
		732	SvOK_off (sv);
		733
		734	return 0;
		735	}
		736
		737	static MGVTBL mmap_vtbl = {
		738	0, 0, 0, 0, mmap_free
		739	};
		740
		741	/*****************************************************************************/
		742
		743	static SV *
		744	get_cb (SV *cb_sv)
		745	{
		746	SvGETMAGIC (cb_sv);
		747	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		748	}
		749
		750	static aio_req ecb_noinline
		751	dreq (SV *callback)
		752	{
		753	SV *cb_cv;
		754	aio_req req;
		755	int req_pri = next_pri;
		756	next_pri = EIO_PRI_DEFAULT;
		757
		758	cb_cv = get_cb (callback);
		759
		760	req = calloc (sizeof (*req), 1);
		761	if (!req)
		762	croak ("out of memory during eio_req allocation");
		763
		764	req->callback = SvREFCNT_inc (cb_cv);
		765	req->pri = req_pri;
		766
		767	return req;
		768	}
		769
		770	#define dREQ \
		771	aio_req req = dreq (callback); \
		772
		773	#define REQ_SEND \
		774	PUTBACK; \
		775	req_submit (req); \
		776	SPAGAIN; \
		777	\
		778	if (GIMME_V != G_VOID) \
		779	XPUSHs (req_sv (req, aio_req_stash));
		780
		781	ecb_inline void
		782	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		783	{
		784	if (expect_false (SvROK (path)))
		785	{
		786	SV *rv = SvRV (path);
		787	SV *wdob;
		788
		789	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
355	{	790	{
356	ress = req->next;	791	path = AvARRAY (rv)[1];
		792	wdob = AvARRAY (rv)[0];
357		793
358	if (!ress)	794	if (SvOK (wdob))
359	{	795	{
360	/* read any signals sent by the worker threads */	796	*wd = SvAIO_WD (wdob);
361	char buf [32];	797	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
362	while (read (respipe [0], buf, 32) == 32)
363	;
364
365	rese = 0;
366	}	798	}
		799	else
		800	*wd = EIO_INVALID_WD;
367	}	801	}
368		802	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
369	pthread_mutex_unlock (&reslock);
370
371	if (!req)
372	break;
373
374	--nreqs;
375
376	if (req->type == REQ_QUIT)
377	started--;
378	else if (req->type == REQ_GROUP && req->length)
379	{	803	{
380	req->fd = 1; /* mark request as delayed */	804	*wd = (aio_wd)(long)SvIVX (rv);
381	continue;	805	*wdsv = SvREFCNT_inc_NN (rv);
		806	*ptr = ".";
		807	return; /* path set to "." */
382	}	808	}
383	else	809	else
384	{	810	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
385	if (req->type == REQ_READ)
386	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
387
388	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
389	SvREADONLY_off (req->data);
390
391	if (req->statdata)
392	{
393	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
394	PL_laststatval = req->result;
395	PL_statcache = *(req->statdata);
396	}
397
398	req_invoke (req);
399
400	count++;
401	}
402
403	req_free (req);
404	}	811	}
405		812
406	return count;	813	*pathsv = newSVsv (path);
		814	*ptr = SvPVbyte_nolen (*pathsv);
407	}	815	}
408		816
409	static void *aio_proc(void *arg);	817	static void ecb_noinline
410		818	req_set_path1 (aio_req req, SV *path)
411	static void start_thread (void)
412	{	819	{
413	sigset_t fullsigset, oldsigset;	820	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
414	pthread_t tid;
415	pthread_attr_t attr;
416
417	pthread_attr_init (&attr);
418	pthread_attr_setstacksize (&attr, STACKSIZE);
419	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
420
421	sigfillset (&fullsigset);
422	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
423
424	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
425	started++;
426
427	sigprocmask (SIG_SETMASK, &oldsigset, 0);
428	}	821	}
429		822
430	static void req_send (aio_req req)	823	static void ecb_noinline
		824	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
431	{	825	{
432	while (started < wanted && nreqs >= started)	826	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
433	start_thread ();
434		827
435	++nreqs;	828	switch (SvTYPE (rv))
436
437	pthread_mutex_lock (&reqlock);
438
439	req->next = 0;
440
441	if (reqe)
442	{	829	{
443	reqe->next = req;	830	case SVt_PVIO:
444	reqe = req;	831	case SVt_PVLV:
		832	case SVt_PVGV:
		833	req->type = type_fh;
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		836	break;
		837
		838	default:
		839	req->type = type_path;
		840	req_set_path1 (req, fh_or_path);
		841	break;
445	}	842	}
446	else	843	}
447	reqe = reqs = req;
448		844
449	pthread_cond_signal (&reqwait);	845	XS(boot_IO__AIO) ecb_cold;
450	pthread_mutex_unlock (&reqlock);
451		846
452	if (nreqs > max_outstanding)	847	MODULE = IO::AIO PACKAGE = IO::AIO
453	for (;;)	848
		849	PROTOTYPES: ENABLE
		850
		851	BOOT:
		852	{
		853	static const struct {
		854	const char *name;
		855	IV iv;
		856	} *civ, const_iv[] = {
		857	# define const_niv(name, value) { # name, (IV) value },
		858	# define const_iv(name) { # name, (IV) name },
		859	# define const_eio(name) { # name, (IV) EIO_ ## name },
		860
		861	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		862
		863	const_iv (ENOSYS)
		864	const_iv (EXDEV)
		865	const_iv (EBADR)
		866
		867	const_iv (O_RDONLY)
		868	const_iv (O_WRONLY)
		869	const_iv (O_RDWR)
		870	const_iv (O_CREAT)
		871	const_iv (O_TRUNC)
		872	const_iv (O_EXCL)
		873	const_iv (O_APPEND)
		874
		875	const_iv (O_ASYNC)
		876	const_iv (O_DIRECT)
		877	const_iv (O_NOATIME)
		878
		879	const_iv (O_CLOEXEC)
		880	const_iv (O_NOCTTY)
		881	const_iv (O_NOFOLLOW)
		882	const_iv (O_NONBLOCK)
		883	const_iv (O_EXEC)
		884	const_iv (O_SEARCH)
		885	const_iv (O_DIRECTORY)
		886	const_iv (O_DSYNC)
		887	const_iv (O_RSYNC)
		888	const_iv (O_SYNC)
		889	const_iv (O_TTY_INIT)
		890
		891	const_iv (S_IFIFO)
		892	const_iv (S_IFCHR)
		893	const_iv (S_IFBLK)
		894	const_iv (S_IFLNK)
		895	const_iv (S_IFREG)
		896	const_iv (S_IFDIR)
		897	const_iv (S_IFWHT)
		898	const_iv (S_IFSOCK)
		899	const_iv (S_IFMT)
		900
		901	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		902	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		903	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		904	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		905	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		906	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		907
		908	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		909	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		910	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		911	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		912	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		913
		914	const_iv (ST_RDONLY)
		915	const_iv (ST_NOSUID)
		916	const_iv (ST_NODEV)
		917	const_iv (ST_NOEXEC)
		918	const_iv (ST_SYNCHRONOUS)
		919	const_iv (ST_MANDLOCK)
		920	const_iv (ST_WRITE)
		921	const_iv (ST_APPEND)
		922	const_iv (ST_IMMUTABLE)
		923	const_iv (ST_NOATIME)
		924	const_iv (ST_NODIRATIME)
		925	const_iv (ST_RELATIME)
		926
		927	const_iv (PROT_NONE)
		928	const_iv (PROT_EXEC)
		929	const_iv (PROT_READ)
		930	const_iv (PROT_WRITE)
		931
		932	/*const_iv (MAP_FIXED)*/
		933	const_iv (MAP_PRIVATE)
		934	const_iv (MAP_SHARED)
		935	const_iv (MAP_ANONYMOUS)
		936
		937	/* linuxish */
		938	const_iv (MAP_HUGETLB)
		939	const_iv (MAP_LOCKED)
		940	const_iv (MAP_NORESERVE)
		941	const_iv (MAP_POPULATE)
		942	const_iv (MAP_NONBLOCK)
		943
		944	const_iv (FIEMAP_FLAG_SYNC)
		945	const_iv (FIEMAP_FLAG_XATTR)
		946	const_iv (FIEMAP_FLAGS_COMPAT)
		947	const_iv (FIEMAP_EXTENT_LAST)
		948	const_iv (FIEMAP_EXTENT_UNKNOWN)
		949	const_iv (FIEMAP_EXTENT_DELALLOC)
		950	const_iv (FIEMAP_EXTENT_ENCODED)
		951	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		952	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		953	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		954	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		955	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		956	const_iv (FIEMAP_EXTENT_MERGED)
		957	const_iv (FIEMAP_EXTENT_SHARED)
		958
		959	const_eio (SEEK_SET)
		960	const_eio (SEEK_CUR)
		961	const_eio (SEEK_END)
		962
		963	const_eio (MCL_FUTURE)
		964	const_eio (MCL_CURRENT)
		965
		966	const_eio (MS_ASYNC)
		967	const_eio (MS_INVALIDATE)
		968	const_eio (MS_SYNC)
		969
		970	const_eio (MT_MODIFY)
		971
		972	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		973	const_eio (SYNC_FILE_RANGE_WRITE)
		974	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		975
		976	const_eio (FALLOC_FL_KEEP_SIZE)
		977
		978	const_eio (READDIR_DENTS)
		979	const_eio (READDIR_DIRS_FIRST)
		980	const_eio (READDIR_STAT_ORDER)
		981	const_eio (READDIR_FOUND_UNKNOWN)
		982
		983	const_eio (DT_UNKNOWN)
		984	const_eio (DT_FIFO)
		985	const_eio (DT_CHR)
		986	const_eio (DT_DIR)
		987	const_eio (DT_BLK)
		988	const_eio (DT_REG)
		989	const_eio (DT_LNK)
		990	const_eio (DT_SOCK)
		991	const_eio (DT_WHT)
		992	};
		993
		994	aio_stash = gv_stashpv ("IO::AIO" , 1);
		995	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		996	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		997	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		998
		999	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1000	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1001
		1002	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1003
		1004	reinit ();
		1005	}
		1006
		1007	void
		1008	reinit ()
		1009	PROTOTYPE:
		1010
		1011	void
		1012	max_poll_reqs (unsigned int nreqs)
		1013	PROTOTYPE: $
		1014	CODE:
		1015	eio_set_max_poll_reqs (nreqs);
		1016
		1017	void
		1018	max_poll_time (double nseconds)
		1019	PROTOTYPE: $
		1020	CODE:
		1021	eio_set_max_poll_time (nseconds);
		1022
		1023	void
		1024	min_parallel (unsigned int nthreads)
		1025	PROTOTYPE: $
		1026	CODE:
		1027	eio_set_min_parallel (nthreads);
		1028
		1029	void
		1030	max_parallel (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_parallel (nthreads);
		1034
		1035	void
		1036	max_idle (unsigned int nthreads)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_max_idle (nthreads);
		1040
		1041	void
		1042	idle_timeout (unsigned int seconds)
		1043	PROTOTYPE: $
		1044	CODE:
		1045	eio_set_idle_timeout (seconds);
		1046
		1047	void
		1048	max_outstanding (unsigned int maxreqs)
		1049	PROTOTYPE: $
		1050	CODE:
		1051	max_outstanding = maxreqs;
		1052
		1053	void
		1054	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1055	PPCODE:
		1056	{
		1057	dREQ;
		1058
		1059	req->type = EIO_WD_OPEN;
		1060	req_set_path1 (req, pathname);
		1061
		1062	REQ_SEND;
		1063	}
		1064
		1065	void
		1066	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->type = EIO_OPEN;
		1072	req_set_path1 (req, pathname);
		1073	req->int1 = flags;
		1074	req->int2 = mode;
		1075
		1076	REQ_SEND;
		1077	}
		1078
		1079	void
		1080	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1081	ALIAS:
		1082	aio_fsync = EIO_FSYNC
		1083	aio_fdatasync = EIO_FDATASYNC
		1084	aio_syncfs = EIO_SYNCFS
		1085	PPCODE:
		1086	{
		1087	int fd = s_fileno_croak (fh, 0);
		1088	dREQ;
		1089
		1090	req->type = ix;
		1091	req->sv1 = newSVsv (fh);
		1092	req->int1 = fd;
		1093
		1094	REQ_SEND;
		1095	}
		1096
		1097	void
		1098	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	int fd = s_fileno_croak (fh, 0);
		1102	dREQ;
		1103
		1104	req->type = EIO_SYNC_FILE_RANGE;
		1105	req->sv1 = newSVsv (fh);
		1106	req->int1 = fd;
		1107	req->offs = offset;
		1108	req->size = nbytes;
		1109	req->int2 = flags;
		1110
		1111	REQ_SEND;
		1112	}
		1113
		1114	void
		1115	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1116	PPCODE:
		1117	{
		1118	int fd = s_fileno_croak (fh, 0);
		1119	dREQ;
		1120
		1121	req->type = EIO_FALLOCATE;
		1122	req->sv1 = newSVsv (fh);
		1123	req->int1 = fd;
		1124	req->int2 = mode;
		1125	req->offs = offset;
		1126	req->size = len;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1133	PPCODE:
		1134	{
		1135	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1136	int fd = s_fileno_croak (fh, 0);
		1137	dREQ;
		1138
		1139	if (expect_false (close_fd < 0))
454	{	1140	{
455	poll_cb ();	1141	int pipefd [2];
456		1142
457	if (nreqs <= max_outstanding)	1143	if (
458	break;	1144	#ifdef _WIN32
459		1145	_pipe (pipefd, 1, _O_BINARY) < 0
460	poll_wait ();	1146	#else
461	}	1147	pipe (pipefd) < 0
462	}	1148	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
463
464	static void end_thread (void)
465	{
466	aio_req req;
467	Newz (0, req, 1, aio_cb);
468	req->type = REQ_QUIT;
469
470	req_send (req);
471	}
472
473	static void min_parallel (int nthreads)
474	{
475	if (wanted < nthreads)
476	wanted = nthreads;
477	}
478
479	static void max_parallel (int nthreads)
480	{
481	int cur = started;
482
483	if (wanted > nthreads)
484	wanted = nthreads;
485
486	while (cur > wanted)
487	{
488	end_thread ();
489	cur--;
490	}
491
492	while (started > wanted)
493	{
494	poll_wait ();
495	poll_cb ();
496	}
497	}
498
499	static void create_pipe ()
500	{
501	if (pipe (respipe))
502	croak ("unable to initialize result pipe");
503
504	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
505	croak ("cannot set result pipe to nonblocking mode");
506
507	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
508	croak ("cannot set result pipe to nonblocking mode");
509	}
510
511	/*****************************************************************************/
512	/* work around various missing functions */
513
514	#if !HAVE_PREADWRITE
515	# define pread aio_pread
516	# define pwrite aio_pwrite
517
518	/*
519	* make our pread/pwrite safe against themselves, but not against
520	* normal read/write by using a mutex. slows down execution a lot,
521	* but that's your problem, not mine.
522	*/
523	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
524
525	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
526	{
527	ssize_t res;
528	off_t ooffset;
529
530	pthread_mutex_lock (&preadwritelock);
531	ooffset = lseek (fd, 0, SEEK_CUR);
532	lseek (fd, offset, SEEK_SET);
533	res = read (fd, buf, count);
534	lseek (fd, ooffset, SEEK_SET);
535	pthread_mutex_unlock (&preadwritelock);
536
537	return res;
538	}
539
540	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
541	{
542	ssize_t res;
543	off_t ooffset;
544
545	pthread_mutex_lock (&preadwritelock);
546	ooffset = lseek (fd, 0, SEEK_CUR);
547	lseek (fd, offset, SEEK_SET);
548	res = write (fd, buf, count);
549	lseek (fd, offset, SEEK_SET);
550	pthread_mutex_unlock (&preadwritelock);
551
552	return res;
553	}
554	#endif	1149	#endif
555		1150	|| close (pipefd [1]) < 0
556	#if !HAVE_FDATASYNC
557	# define fdatasync fsync
558	#endif
559
560	#if !HAVE_READAHEAD
561	# define readahead aio_readahead
562
563	static ssize_t readahead (int fd, off_t offset, size_t count)
564	{
565	char readahead_buf[4096];
566
567	while (count > 0)
568	{
569	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
570
571	pread (fd, readahead_buf, len, offset);
572	offset += len;
573	count -= len;
574	}
575
576	errno = 0;
577	}
578	#endif
579
580	#if !HAVE_READDIR_R
581	# define readdir_r aio_readdir_r
582
583	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
584
585	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
586	{
587	struct dirent *e;
588	int errorno;
589
590	pthread_mutex_lock (&readdirlock);
591
592	e = readdir (dirp);
593	errorno = errno;
594
595	if (e)
596	{
597	*res = ent;
598	strcpy (ent->d_name, e->d_name);
599	}
600	else
601	*res = 0;
602
603	pthread_mutex_unlock (&readdirlock);
604
605	errno = errorno;
606	return e ? 0 : -1;
607	}
608	#endif
609
610	/* sendfile always needs emulation */
611	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
612	{
613	ssize_t res;
614
615	if (!count)
616	return 0;
617
618	#if HAVE_SENDFILE
619	# if __linux
620	res = sendfile (ofd, ifd, &offset, count);
621
622	# elif __freebsd
623	/*
624	* Of course, the freebsd sendfile is a dire hack with no thoughts
625	* wasted on making it similar to other I/O functions.
626	*/
627	{
628	off_t sbytes;
629	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
630
631	if (res < 0 && sbytes)
632	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
633	res = sbytes;
634	}
635
636	# elif __hpux
637	res = sendfile (ofd, ifd, offset, count, 0, 0);
638
639	# elif __solaris
640	{
641	struct sendfilevec vec;
642	size_t sbytes;
643
644	vec.sfv_fd = ifd;
645	vec.sfv_flag = 0;
646	vec.sfv_off = offset;
647	vec.sfv_len = count;
648
649	res = sendfilev (ofd, &vec, 1, &sbytes);
650
651	if (res < 0 && sbytes)
652	res = sbytes;
653	}
654
655	# endif
656	#else
657	res = -1;
658	errno = ENOSYS;
659	#endif
660
661	if (res < 0
662	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
663	#if __solaris
664	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
665	#endif
666	)
667	)
668	{
669	/* emulate sendfile. this is a major pain in the ass */
670	char buf[4096];
671	res = 0;
672
673	while (count)
674	{
675	ssize_t cnt;
676
677	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
678
679	if (cnt <= 0)
680	{	1151	)
681	if (cnt && !res) res = -1;	1152	abort (); /*D*/
682	break;
683	}
684		1153
685	cnt = write (ofd, buf, cnt);	1154	close_fd = pipefd [0];
686
687	if (cnt <= 0)
688	{
689	if (cnt && !res) res = -1;
690	break;
691	}
692
693	offset += cnt;
694	res += cnt;
695	count -= cnt;
696	}
697	}
698
699	return res;
700	}
701
702	/* read a full directory */
703	static int scandir_ (const char *path, void **namesp)
704	{
705	DIR *dirp = opendir (path);
706	union
707	{
708	struct dirent d;
709	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
710	} u;
711	struct dirent *entp;
712	char *name, *names;
713	int memlen = 4096;
714	int memofs = 0;
715	int res = 0;
716	int errorno;
717
718	if (!dirp)
719	return -1;
720
721	names = malloc (memlen);
722
723	for (;;)
724	{
725	errno = 0, readdir_r (dirp, &u.d, &entp);
726
727	if (!entp)
728	break;
729
730	name = entp->d_name;
731
732	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
733	{
734	int len = strlen (name) + 1;
735
736	res++;
737
738	while (memofs + len > memlen)
739	{
740	memlen *= 2;
741	names = realloc (names, memlen);
742	if (!names)
743	break;
744	}
745
746	memcpy (names + memofs, name, len);
747	memofs += len;
748	}
749	}
750
751	errorno = errno;
752	closedir (dirp);
753
754	if (errorno)
755	{
756	free (names);
757	errno = errorno;
758	res = -1;
759	}
760
761	*namesp = (void *)names;
762	return res;
763	}
764
765	/*****************************************************************************/
766
767	static void *aio_proc (void *thr_arg)
768	{
769	aio_req req;
770	int type;
771
772	do
773	{
774	pthread_mutex_lock (&reqlock);
775
776	for (;;)
777	{
778	req = reqs;
779
780	if (reqs)
781	{
782	reqs = reqs->next;
783	if (!reqs) reqe = 0;
784	}
785
786	if (req)
787	break;
788
789	pthread_cond_wait (&reqwait, &reqlock);
790	}
791
792	pthread_mutex_unlock (&reqlock);
793
794	errno = 0; /* strictly unnecessary */
795
796	if (!(req->flags & FLAG_CANCELLED))
797	switch (type = req->type) /* remember type for QUIT check */
798	{
799	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
800	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
801
802	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
803	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
804
805	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
806	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
807	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
808
809	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
810	case REQ_CLOSE: req->result = close (req->fd); break;
811	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
812	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
813	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
814	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
815	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
816
817	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
818	case REQ_FSYNC: req->result = fsync (req->fd); break;
819	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
820
821	case REQ_SLEEP:
822	{
823	struct timeval tv;
824
825	tv.tv_sec = req->fd;
826	tv.tv_usec = req->fd2;
827
828	req->result = select (0, 0, 0, 0, &tv);
829	}
830
831	case REQ_GROUP:
832	case REQ_NOP:
833	case REQ_QUIT:
834	break;
835
836	default:
837	req->result = ENOSYS;
838	break;
839	}	1155	}
840		1156
841	req->errorno = errno;	1157	req->type = EIO_DUP2;
842		1158	req->int1 = close_fd;
843	pthread_mutex_lock (&reslock);	1159	req->sv2 = newSVsv (fh);
844
845	req->next = 0;	1160	req->int2 = fd;
846		1161
847	if (rese)	1162	REQ_SEND;
848	{
849	rese->next = req;
850	rese = req;
851	}
852	else
853	{
854	rese = ress = req;
855
856	/* write a dummy byte to the pipe so fh becomes ready */
857	write (respipe [1], &respipe, 1);
858	}
859
860	pthread_mutex_unlock (&reslock);
861	}
862	while (type != REQ_QUIT);
863
864	return 0;
865	}	1163	}
866		1164
867	/*****************************************************************************/
868
869	static void atfork_prepare (void)
870	{
871	pthread_mutex_lock (&reqlock);
872	pthread_mutex_lock (&reslock);
873	#if !HAVE_PREADWRITE
874	pthread_mutex_lock (&preadwritelock);
875	#endif
876	#if !HAVE_READDIR_R
877	pthread_mutex_lock (&readdirlock);
878	#endif
879	}
880
881	static void atfork_parent (void)
882	{
883	#if !HAVE_READDIR_R
884	pthread_mutex_unlock (&readdirlock);
885	#endif
886	#if !HAVE_PREADWRITE
887	pthread_mutex_unlock (&preadwritelock);
888	#endif
889	pthread_mutex_unlock (&reslock);
890	pthread_mutex_unlock (&reqlock);
891	}
892
893	static void atfork_child (void)
894	{
895	aio_req prv;
896
897	started = 0;
898
899	while (reqs)
900	{
901	prv = reqs;
902	reqs = prv->next;
903	req_free (prv);
904	}
905
906	reqs = reqe = 0;
907
908	while (ress)
909	{
910	prv = ress;
911	ress = prv->next;
912	req_free (prv);
913	}
914
915	ress = rese = 0;
916
917	close (respipe [0]);
918	close (respipe [1]);
919	create_pipe ();
920
921	atfork_parent ();
922	}
923
924	#define dREQ \
925	aio_req req; \
926	\
927	if (SvOK (callback) && !SvROK (callback)) \
928	croak ("callback must be undef or of reference type"); \
929	\
930	Newz (0, req, 1, aio_cb); \
931	if (!req) \
932	croak ("out of memory during aio_req allocation"); \
933	\
934	req->callback = newSVsv (callback)
935
936	#define REQ_SEND \
937	req_send (req); \
938	\
939	if (GIMME_V != G_VOID) \
940	XPUSHs (req_sv (req, AIO_REQ_KLASS));
941
942	MODULE = IO::AIO PACKAGE = IO::AIO
943
944	PROTOTYPES: ENABLE
945
946	BOOT:
947	{
948	HV *stash = gv_stashpv ("IO::AIO", 1);
949	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
950	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
951	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
952
953	create_pipe ();
954	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955	}
956
957	void	1165	void
958	min_parallel (nthreads)	1166	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
959	int nthreads
960	PROTOTYPE: $
961
962	void
963	max_parallel (nthreads)
964	int nthreads
965	PROTOTYPE: $
966
967	int
968	max_outstanding (nreqs)
969	int nreqs
970	PROTOTYPE: $
971	CODE:	1167	PPCODE:
972	RETVAL = max_outstanding;
973	max_outstanding = nreqs;
974
975	void
976	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
977	SV * pathname
978	int flags
979	int mode
980	SV * callback
981	PROTOTYPE: $$$;$
982	PPCODE:
983	{	1168	{
		1169	STRLEN svlen;
		1170	int fd = s_fileno_croak (fh, 0);
984	dREQ;	1171	dREQ;
985		1172
986	req->type = REQ_OPEN;	1173	req->type = EIO_SEEK;
987	req->data = newSVsv (pathname);	1174	req->sv1 = newSVsv (fh);
988	req->dataptr = SvPVbyte_nolen (req->data);	1175	req->int1 = fd;
989	req->fd = flags;	1176	req->offs = SvVAL64 (offset);
990	req->mode = mode;	1177	req->int2 = whence;
991		1178
992	REQ_SEND;	1179	REQ_SEND;
993	}	1180	}
994		1181
995	void	1182	void
996	aio_close (fh,callback=&PL_sv_undef)	1183	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
997	SV * fh
998	SV * callback
999	PROTOTYPE: $;$
1000	ALIAS:	1184	ALIAS:
1001	aio_close = REQ_CLOSE
1002	aio_fsync = REQ_FSYNC
1003	aio_fdatasync = REQ_FDATASYNC
1004	PPCODE:
1005	{
1006	dREQ;
1007
1008	req->type = ix;
1009	req->fh = newSVsv (fh);
1010	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1011
1012	REQ_SEND (req);
1013	}
1014
1015	void
1016	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1017	SV * fh
1018	UV offset
1019	UV length
1020	SV * data
1021	UV dataoffset
1022	SV * callback
1023	ALIAS:
1024	aio_read = REQ_READ	1185	aio_read = EIO_READ
1025	aio_write = REQ_WRITE	1186	aio_write = EIO_WRITE
1026	PROTOTYPE: $$$$$;$
1027	PPCODE:	1187	PPCODE:
1028	{	1188	{
1029	aio_req req;
1030	STRLEN svlen;	1189	STRLEN svlen;
		1190	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1031	char *svptr = SvPVbyte (data, svlen);	1191	char *svptr = SvPVbyte (data, svlen);
1032		1192	UV len = SvUV (length);
1033	SvUPGRADE (data, SVt_PV);
1034	SvPOK_on (data);
1035		1193
1036	if (dataoffset < 0)	1194	if (dataoffset < 0)
1037	dataoffset += svlen;	1195	dataoffset += svlen;
1038		1196
1039	if (dataoffset < 0 || dataoffset > svlen)	1197	if (dataoffset < 0 || dataoffset > svlen)
1040	croak ("data offset outside of string");	1198	croak ("dataoffset outside of data scalar");
1041		1199
1042	if (ix == REQ_WRITE)	1200	if (ix == EIO_WRITE)
1043	{	1201	{
1044	/* write: check length and adjust. */	1202	/* write: check length and adjust. */
1045	if (length < 0 || length + dataoffset > svlen)	1203	if (!SvOK (length) || len + dataoffset > svlen)
1046	length = svlen - dataoffset;	1204	len = svlen - dataoffset;
1047	}	1205	}
1048	else	1206	else
1049	{	1207	{
1050	/* read: grow scalar as necessary */	1208	/* read: check type and grow scalar as necessary */
		1209	SvUPGRADE (data, SVt_PV);
1051	svptr = SvGROW (data, length + dataoffset);	1210	svptr = SvGROW (data, len + dataoffset + 1);
1052	}	1211	}
1053
1054	if (length < 0)
1055	croak ("length must not be negative");
1056		1212
1057	{	1213	{
1058	dREQ;	1214	dREQ;
1059		1215
1060	req->type = ix;	1216	req->type = ix;
1061	req->fh = newSVsv (fh);	1217	req->sv1 = newSVsv (fh);
1062	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1218	req->int1 = fd;
1063	: IoOFP (sv_2io (fh)));	1219	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1064	req->offset = offset;	1220	req->size = len;
1065	req->length = length;
1066	req->data = SvREFCNT_inc (data);	1221	req->sv2 = SvREFCNT_inc (data);
1067	req->dataptr = (char *)svptr + dataoffset;	1222	req->ptr2 = (char *)svptr + dataoffset;
		1223	req->stroffset = dataoffset;
1068		1224
1069	if (!SvREADONLY (data))	1225	if (!SvREADONLY (data))
1070	{	1226	{
1071	SvREADONLY_on (data);	1227	SvREADONLY_on (data);
1072	req->data2ptr = (void *)data;	1228	req->flags |= FLAG_SV2_RO_OFF;
1073	}	1229	}
1074		1230
1075	REQ_SEND;	1231	REQ_SEND;
1076	}	1232	}
1077	}	1233	}
1078		1234
1079	void	1235	void
1080	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1081	SV * out_fh	1237	ALIAS:
1082	SV * in_fh	1238	aio_readlink = EIO_READLINK
1083	UV in_offset	1239	aio_realpath = EIO_REALPATH
1084	UV length
1085	SV * callback
1086	PROTOTYPE: $$$$;$
1087	PPCODE:	1240	PPCODE:
1088	{	1241	{
		1242	dREQ;
		1243
		1244	req->type = ix;
		1245	req_set_path1 (req, pathname);
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	int ifd = s_fileno_croak (in_fh , 0);
		1255	int ofd = s_fileno_croak (out_fh, 1);
1089	dREQ;	1256	dREQ;
1090		1257
1091	req->type = REQ_SENDFILE;	1258	req->type = EIO_SENDFILE;
1092	req->fh = newSVsv (out_fh);	1259	req->sv1 = newSVsv (out_fh);
1093	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1260	req->int1 = ofd;
1094	req->fh2 = newSVsv (in_fh);	1261	req->sv2 = newSVsv (in_fh);
1095	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1262	req->int2 = ifd;
1096	req->offset = in_offset;	1263	req->offs = in_offset;
1097	req->length = length;	1264	req->size = length;
1098		1265
1099	REQ_SEND;	1266	REQ_SEND;
1100	}	1267	}
1101		1268
1102	void	1269	void
1103	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1104	SV * fh
1105	UV offset
1106	IV length
1107	SV * callback
1108	PROTOTYPE: $$$;$
1109	PPCODE:	1271	PPCODE:
1110	{	1272	{
		1273	int fd = s_fileno_croak (fh, 0);
1111	dREQ;	1274	dREQ;
1112		1275
1113	req->type = REQ_READAHEAD;	1276	req->type = EIO_READAHEAD;
1114	req->fh = newSVsv (fh);	1277	req->sv1 = newSVsv (fh);
1115	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1278	req->int1 = fd;
1116	req->offset = offset;	1279	req->offs = offset;
1117	req->length = length;	1280	req->size = length;
1118		1281
1119	REQ_SEND;	1282	REQ_SEND;
1120	}	1283	}
1121		1284
1122	void	1285	void
1123	aio_stat (fh_or_path,callback=&PL_sv_undef)	1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1124	SV * fh_or_path
1125	SV * callback
1126	ALIAS:	1287	ALIAS:
1127	aio_stat = REQ_STAT	1288	aio_stat = EIO_STAT
1128	aio_lstat = REQ_LSTAT	1289	aio_lstat = EIO_LSTAT
		1290	aio_statvfs = EIO_STATVFS
1129	PPCODE:	1291	PPCODE:
1130	{	1292	{
1131	dREQ;	1293	dREQ;
1132		1294
1133	New (0, req->statdata, 1, Stat_t);	1295	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1134	if (!req->statdata)
1135	{
1136	req_free (req);
1137	croak ("out of memory during aio_req->statdata allocation");
1138	}
1139
1140	if (SvPOK (fh_or_path))
1141	{
1142	req->type = ix;
1143	req->data = newSVsv (fh_or_path);
1144	req->dataptr = SvPVbyte_nolen (req->data);
1145	}
1146	else
1147	{
1148	req->type = REQ_FSTAT;
1149	req->fh = newSVsv (fh_or_path);
1150	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1151	}
1152		1296
1153	REQ_SEND;	1297	REQ_SEND;
1154	}	1298	}
1155		1299
		1300	UV
		1301	major (UV dev)
		1302	ALIAS:
		1303	minor = 1
		1304	CODE:
		1305	RETVAL = ix ? major (dev) : minor (dev);
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	UV
		1310	makedev (UV maj, UV min)
		1311	CODE:
		1312	RETVAL = makedev (maj, min);
		1313	OUTPUT:
		1314	RETVAL
		1315
1156	void	1316	void
		1317	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1318	PPCODE:
		1319	{
		1320	dREQ;
		1321
		1322	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1323	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1324	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1325
		1326	REQ_SEND;
		1327	}
		1328
		1329	void
		1330	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1331	PPCODE:
		1332	{
		1333	dREQ;
		1334
		1335	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1336	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1337
		1338	REQ_SEND;
		1339	}
		1340
		1341	void
		1342	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1343	PPCODE:
		1344	{
		1345	dREQ;
		1346
		1347	req->int2 = mode;
		1348	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1360	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1361	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
		1370	dREQ;
		1371
		1372	req->type = EIO_READDIR;
		1373	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1374
		1375	if (flags & EIO_READDIR_DENTS)
		1376	req->int1 |= EIO_READDIR_CUSTOM2;
		1377
		1378	req_set_path1 (req, pathname);
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388
		1389	req->type = EIO_MKDIR;
		1390	req->int2 = mode;
		1391	req_set_path1 (req, pathname);
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
1157	aio_unlink (pathname,callback=&PL_sv_undef)	1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1158	SV * pathname
1159	SV * callback
1160	ALIAS:	1398	ALIAS:
1161	aio_unlink = REQ_UNLINK	1399	aio_unlink = EIO_UNLINK
1162	aio_rmdir = REQ_RMDIR	1400	aio_rmdir = EIO_RMDIR
1163	aio_readdir = REQ_READDIR	1401	aio_readdir = EIO_READDIR
1164	PPCODE:	1402	PPCODE:
1165	{	1403	{
1166	dREQ;	1404	dREQ;
1167		1405
1168	req->type = ix;	1406	req->type = ix;
1169	req->data = newSVsv (pathname);	1407	req_set_path1 (req, pathname);
1170	req->dataptr = SvPVbyte_nolen (req->data);	1408
1171
1172	REQ_SEND;	1409	REQ_SEND;
1173	}	1410	}
1174		1411
1175	void	1412	void
1176	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1177	SV * oldpath
1178	SV * newpath
1179	SV * callback
1180	ALIAS:	1414	ALIAS:
1181	aio_link = REQ_LINK	1415	aio_link = EIO_LINK
1182	aio_symlink = REQ_SYMLINK	1416	aio_symlink = EIO_SYMLINK
1183	aio_rename = REQ_RENAME	1417	aio_rename = EIO_RENAME
1184	PPCODE:	1418	PPCODE:
1185	{	1419	{
		1420	eio_wd wd2 = 0;
1186	dREQ;	1421	dREQ;
1187		1422
1188	req->type = ix;	1423	req->type = ix;
1189	req->fh = newSVsv (oldpath);	1424	req_set_path1 (req, oldpath);
1190	req->data2ptr = SvPVbyte_nolen (req->fh);	1425	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1191	req->data = newSVsv (newpath);	1426	req->int3 = (long)wd2;
1192	req->dataptr = SvPVbyte_nolen (req->data);
1193		1427
1194	REQ_SEND;	1428	REQ_SEND;
1195	}	1429	}
1196		1430
1197	void	1431	void
1198	aio_sleep (delay,callback=&PL_sv_undef)	1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1199	double delay
1200	SV * callback
1201	PPCODE:	1433	PPCODE:
1202	{	1434	{
1203	dREQ;	1435	dREQ;
1204		1436
1205	req->type = REQ_SLEEP;	1437	req->type = EIO_MKNOD;
1206	req->fd = delay < 0. ? 0 : delay;	1438	req->int2 = (mode_t)mode;
1207	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1439	req->offs = dev;
1208		1440	req_set_path1 (req, pathname);
		1441
1209	REQ_SEND;	1442	REQ_SEND;
1210	}	1443	}
1211		1444
1212	void	1445	void
1213	aio_group (callback=&PL_sv_undef)	1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1214	SV * callback	1447	ALIAS:
1215	PROTOTYPE: ;$	1448	aio_mtouch = EIO_MTOUCH
		1449	aio_msync = EIO_MSYNC
1216	PPCODE:	1450	PPCODE:
1217	{	1451	{
		1452	STRLEN svlen;
		1453	char *svptr = SvPVbyte (data, svlen);
		1454	UV len = SvUV (length);
		1455
		1456	if (offset < 0)
		1457	offset += svlen;
		1458
		1459	if (offset < 0 || offset > svlen)
		1460	croak ("offset outside of scalar");
		1461
		1462	if (!SvOK (length) || len + offset > svlen)
		1463	len = svlen - offset;
		1464
		1465	{
		1466	dREQ;
		1467
		1468	req->type = ix;
		1469	req->sv2 = SvREFCNT_inc (data);
		1470	req->ptr2 = (char *)svptr + offset;
		1471	req->size = len;
		1472	req->int1 = flags;
		1473
		1474	REQ_SEND;
		1475	}
		1476	}
		1477
		1478	void
		1479	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1480	PPCODE:
		1481	{
		1482	STRLEN svlen;
		1483	char *svptr = SvPVbyte (data, svlen);
		1484	UV len = SvUV (length);
		1485
		1486	if (offset < 0)
		1487	offset += svlen;
		1488
		1489	if (offset < 0 || offset > svlen)
		1490	croak ("offset outside of scalar");
		1491
		1492	if (!SvOK (length) || len + offset > svlen)
		1493	len = svlen - offset;
		1494
		1495	{
		1496	dREQ;
		1497
		1498	req->type = EIO_MLOCK;
		1499	req->sv2 = SvREFCNT_inc (data);
		1500	req->ptr2 = (char *)svptr + offset;
		1501	req->size = len;
		1502
		1503	REQ_SEND;
		1504	}
		1505	}
		1506
		1507	void
		1508	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1509	PPCODE:
		1510	{
		1511	dREQ;
		1512
		1513	req->type = EIO_MLOCKALL;
		1514	req->int1 = flags;
		1515
		1516	REQ_SEND;
		1517	}
		1518
		1519	void
		1520	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1521	PPCODE:
		1522	{
		1523	int fd = s_fileno_croak (fh, 0);
1218	dREQ;	1524	dREQ;
		1525
1219	req->type = REQ_GROUP;	1526	req->type = EIO_CUSTOM;
1220	req_send (req);	1527	req->sv1 = newSVsv (fh);
1221	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1528	req->int1 = fd;
1222	}
1223		1529
		1530	req->feed = fiemap;
		1531	/* keep our fingers crossed that the next two types are 64 bit */
		1532	req->offs = start;
		1533	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1534	req->int2 = flags;
		1535	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1536
		1537	REQ_SEND;
		1538	}
		1539
1224	void	1540	void
1225	aio_nop (callback=&PL_sv_undef)	1541	aio_busy (double delay, SV *callback=&PL_sv_undef)
1226	SV * callback
1227	PPCODE:	1542	PPCODE:
1228	{	1543	{
1229	dREQ;	1544	dREQ;
1230		1545
1231	req->type = REQ_NOP;	1546	req->type = EIO_BUSY;
		1547	req->nv1 = delay < 0. ? 0. : delay;
1232		1548
1233	REQ_SEND;	1549	REQ_SEND;
1234	}	1550	}
1235		1551
1236	void	1552	void
		1553	aio_group (SV *callback=&PL_sv_undef)
		1554	PPCODE:
		1555	{
		1556	dREQ;
		1557
		1558	req->type = EIO_GROUP;
		1559
		1560	req_submit (req);
		1561	XPUSHs (req_sv (req, aio_grp_stash));
		1562	}
		1563
		1564	void
		1565	aio_nop (SV *callback=&PL_sv_undef)
		1566	ALIAS:
		1567	aio_nop = EIO_NOP
		1568	aio_sync = EIO_SYNC
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = ix;
		1574
		1575	REQ_SEND;
		1576	}
		1577
		1578	int
		1579	aioreq_pri (int pri = 0)
		1580	CODE:
		1581	RETVAL = next_pri;
		1582	if (items > 0)
		1583	{
		1584	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1585	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1586	next_pri = pri;
		1587	}
		1588	OUTPUT:
		1589	RETVAL
		1590
		1591	void
		1592	aioreq_nice (int nice = 0)
		1593	CODE:
		1594	nice = next_pri - nice;
		1595	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1596	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1597	next_pri = nice;
		1598
		1599	void
1237	flush ()	1600	flush ()
1238	PROTOTYPE:
1239	CODE:	1601	CODE:
1240	while (nreqs)	1602	while (eio_nreqs ())
1241	{	1603	{
1242	poll_wait ();	1604	poll_wait ();
1243	poll_cb ();	1605	poll_cb ();
1244	}	1606	}
1245		1607
1246	void	1608	int
1247	poll()	1609	poll ()
1248	PROTOTYPE:
1249	CODE:	1610	CODE:
1250	if (nreqs)
1251	{
1252	poll_wait ();	1611	poll_wait ();
1253	poll_cb ();	1612	RETVAL = poll_cb ();
1254	}
1255
1256	int
1257	poll_fileno()
1258	PROTOTYPE:
1259	CODE:
1260	RETVAL = respipe [0];
1261	OUTPUT:	1613	OUTPUT:
1262	RETVAL	1614	RETVAL
1263		1615
1264	int	1616	int
		1617	poll_fileno ()
		1618	CODE:
		1619	RETVAL = s_epipe_fd (&respipe);
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	int
1265	poll_cb(...)	1624	poll_cb (...)
1266	PROTOTYPE:	1625	PROTOTYPE:
1267	CODE:	1626	CODE:
1268	RETVAL = poll_cb ();	1627	RETVAL = poll_cb ();
1269	OUTPUT:	1628	OUTPUT:
1270	RETVAL	1629	RETVAL
1271		1630
1272	void	1631	void
1273	poll_wait()	1632	poll_wait ()
1274	PROTOTYPE:
1275	CODE:	1633	CODE:
1276	if (nreqs)
1277	poll_wait ();	1634	poll_wait ();
1278		1635
1279	int	1636	int
1280	nreqs()	1637	nreqs ()
1281	PROTOTYPE:
1282	CODE:	1638	CODE:
1283	RETVAL = nreqs;	1639	RETVAL = eio_nreqs ();
1284	OUTPUT:	1640	OUTPUT:
1285	RETVAL	1641	RETVAL
1286		1642
		1643	int
		1644	nready ()
		1645	CODE:
		1646	RETVAL = eio_nready ();
		1647	OUTPUT:
		1648	RETVAL
		1649
		1650	int
		1651	npending ()
		1652	CODE:
		1653	RETVAL = eio_npending ();
		1654	OUTPUT:
		1655	RETVAL
		1656
		1657	int
		1658	nthreads ()
		1659	CODE:
		1660	RETVAL = eio_nthreads ();
		1661	OUTPUT:
		1662	RETVAL
		1663
		1664	int
		1665	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1666	CODE:
		1667	RETVAL = posix_fadvise (fh, offset, length, advice);
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	IV
		1672	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1673	CODE:
		1674	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1675	OUTPUT:
		1676	RETVAL
		1677
		1678	void
		1679	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1680	PPCODE:
		1681	sv_unmagic (scalar, MMAP_MAGIC);
		1682	{
		1683	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1684	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1685	if (addr == (void *)-1)
		1686	XSRETURN_NO;
		1687
		1688	sv_force_normal (scalar);
		1689
		1690	/* we store the length in mg_obj, as namlen is I32 :/ */
		1691	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1692	->mg_obj = (SV *)length;
		1693
		1694	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1695
		1696	if (!(prot & PROT_WRITE))
		1697	SvREADONLY_on (scalar);
		1698
		1699	if (SvLEN (scalar))
		1700	Safefree (SvPVX (scalar));
		1701
		1702	SvPVX (scalar) = (char *)addr;
		1703	SvCUR_set (scalar, length);
		1704	SvLEN_set (scalar, 0);
		1705	SvPOK_only (scalar);
		1706
		1707	XSRETURN_YES;
		1708	}
		1709
		1710	void
		1711	munmap (SV *scalar)
		1712	CODE:
		1713	sv_unmagic (scalar, MMAP_MAGIC);
		1714
		1715	int
		1716	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1717	ALIAS:
		1718	mprotect = 1
		1719	CODE:
		1720	{
		1721	STRLEN svlen;
		1722	void *addr = SvPVbyte (scalar, svlen);
		1723	size_t len = SvUV (length);
		1724
		1725	if (offset < 0)
		1726	offset += svlen;
		1727
		1728	if (offset < 0 || offset > svlen)
		1729	croak ("offset outside of scalar");
		1730
		1731	if (!SvOK (length) || len + offset > svlen)
		1732	len = svlen - offset;
		1733
		1734	addr = (void *)(((intptr_t)addr) + offset);
		1735	eio_page_align (&addr, &len);
		1736
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1740	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1741	}
		1742	}
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746	int
		1747	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1748	CODE:
		1749	{
		1750	STRLEN svlen;
		1751	void *addr = SvPVbyte (scalar, svlen);
		1752	size_t len = SvUV (length);
		1753
		1754	if (offset < 0)
		1755	offset += svlen;
		1756
		1757	if (offset < 0 || offset > svlen)
		1758	croak ("offset outside of scalar");
		1759
		1760	if (!SvOK (length) || len + offset > svlen)
		1761	len = svlen - offset;
		1762
		1763	addr = (void *)(((intptr_t)addr) + offset);
		1764	eio_page_align (&addr, &len);
		1765	#if _POSIX_MEMLOCK_RANGE
		1766	RETVAL = munlock (addr, len);
		1767	#else
		1768	RETVAL = ((errno = ENOSYS), -1);
		1769	#endif
		1770	}
		1771	OUTPUT:
		1772	RETVAL
		1773
		1774	int
		1775	munlockall ()
		1776	CODE:
		1777	#if _POSIX_MEMLOCK
		1778	munlockall ();
		1779	#else
		1780	RETVAL = -1;
		1781	errno = ENOSYS;
		1782	#endif
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786	void _on_next_submit (SV *cb)
		1787	CODE:
		1788	SvREFCNT_dec (on_next_submit);
		1789	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1790
1287	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
1288		1792
		1793	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1794
		1795	BOOT:
		1796	{
		1797	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1798	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1799	}
		1800
		1801	void
		1802	DESTROY (SV *self)
		1803	CODE:
		1804	{
		1805	aio_wd wd = SvAIO_WD (self);
		1806	#if HAVE_AT
		1807	{
		1808	SV *callback = &PL_sv_undef;
		1809	dREQ; /* clobbers next_pri :/ */
		1810	next_pri = req->pri; /* restore next_pri */
		1811	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1812	req->type = EIO_WD_CLOSE;
		1813	req->wd = wd;
		1814	REQ_SEND;
		1815	}
		1816	#else
		1817	eio_wd_close_sync (wd);
		1818	#endif
		1819	}
		1820
1289	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1821	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290		1822
1291	void	1823	void
1292	cancel (aio_req_ornot req)	1824	cancel (aio_req_ornot req)
1293	PROTOTYPE:
1294	CODE:	1825	CODE:
1295	req_cancel (req);	1826	eio_cancel (req);
1296		1827
1297	void	1828	void
1298	cb (aio_req req, SV *callback=&PL_sv_undef)	1829	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1299	CODE:	1830	PPCODE:
		1831	{
		1832	if (GIMME_V != G_VOID)
		1833	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1834
		1835	if (items > 1)
		1836	{
		1837	SV *cb_cv =get_cb (callback);
		1838
1300	SvREFCNT_dec (req->callback);	1839	SvREFCNT_dec (req->callback);
1301	req->callback = newSVsv (callback);	1840	req->callback = SvREFCNT_inc (cb_cv);
		1841	}
		1842	}
1302		1843
1303	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1844	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1304		1845
1305	void	1846	void
1306	add (aio_req grp, ...)	1847	add (aio_req grp, ...)
1307	PPCODE:	1848	PPCODE:
1308	{	1849	{
1309	int i;	1850	int i;
1310	aio_req req;
1311		1851
1312	if (grp->fd == 2)	1852	if (grp->int1 == 2)
1313	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1853	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1314		1854
1315	for (i = 1; i < items; ++i )	1855	for (i = 1; i < items; ++i )
1316	{	1856	{
		1857	aio_req req;
		1858
1317	if (GIMME_V != G_VOID)	1859	if (GIMME_V != G_VOID)
1318	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1860	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1319		1861
1320	req = SvAIO_REQ (ST (i));	1862	req = SvAIO_REQ (ST (i));
1321		1863
1322	if (req)	1864	if (req)
1323	{	1865	eio_grp_add (grp, req);
1324	++grp->length;
1325	req->grp = grp;
1326
1327	req->grp_prev = 0;
1328	req->grp_next = grp->grp_first;
1329
1330	if (grp->grp_first)
1331	grp->grp_first->grp_prev = req;
1332
1333	grp->grp_first = req;
1334	}
1335	}	1866	}
1336	}	1867	}
		1868
		1869	void
		1870	cancel_subs (aio_req_ornot req)
		1871	CODE:
		1872	req_cancel_subs (req);
1337		1873
1338	void	1874	void
1339	result (aio_req grp, ...)	1875	result (aio_req grp, ...)
1340	CODE:	1876	CODE:
1341	{	1877	{
1342	int i;	1878	int i;
		1879	AV *av;
		1880
		1881	grp->errorno = errno;
		1882
1343	AV *av = newAV ();	1883	av = newAV ();
		1884	av_extend (av, items - 1);
1344		1885
1345	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1346	av_push (av, newSVsv (ST (i)));	1887	av_push (av, newSVsv (ST (i)));
1347		1888
1348	SvREFCNT_dec (grp->data);	1889	SvREFCNT_dec (grp->sv1);
1349	grp->data = (SV *)av;	1890	grp->sv1 = (SV *)av;
1350	}	1891	}
1351		1892
1352	void	1893	void
		1894	errno (aio_req grp, int errorno = errno)
		1895	CODE:
		1896	grp->errorno = errorno;
		1897
		1898	void
1353	feed_limit (aio_req grp, int limit)	1899	limit (aio_req grp, int limit)
1354	CODE:	1900	CODE:
1355	grp->fd2 = limit;	1901	eio_grp_limit (grp, limit);
1356	aio_grp_feed (grp);
1357		1902
1358	void	1903	void
1359	feed (aio_req grp, SV *callback=&PL_sv_undef)	1904	feed (aio_req grp, SV *callback=&PL_sv_undef)
1360	CODE:	1905	CODE:
1361	{	1906	{
1362	SvREFCNT_dec (grp->fh2);	1907	SvREFCNT_dec (grp->sv2);
1363	grp->fh2 = newSVsv (callback);	1908	grp->sv2 = newSVsv (callback);
		1909	grp->feed = aio_grp_feed;
1364		1910
1365	if (grp->fd2 <= 0)	1911	if (grp->int2 <= 0)
1366	grp->fd2 = 2;	1912	grp->int2 = 2;
1367		1913
1368	aio_grp_feed (grp);	1914	eio_grp_limit (grp, grp->int2);
1369	}	1915	}
1370		1916

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