[ViewVC] Diff of: cvs/IO-AIO/AIO.pm

Comparing IO-AIO/AIO.pm (file contents):
Revision 1.229 by root, Wed Jul 25 16:32:30 2012 UTC vs.
Revision 1.243 by root, Sat Sep 7 23:18:23 2013 UTC

…		…
68	=head2 EXAMPLE	68	=head2 EXAMPLE
69		69
70	This is a simple example that uses the EV module and loads	70	This is a simple example that uses the EV module and loads
71	F</etc/passwd> asynchronously:	71	F</etc/passwd> asynchronously:
72		72
73	use Fcntl;
74	use EV;	73	use EV;
75	use IO::AIO;	74	use IO::AIO;
76		75
77	# register the IO::AIO callback with EV	76	# register the IO::AIO callback with EV
78	my $aio_w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb;	77	my $aio_w = EV::io IO::AIO::poll_fileno, EV::READ, \&IO::AIO::poll_cb;
…		…
168	use common::sense;	167	use common::sense;
169		168
170	use base 'Exporter';	169	use base 'Exporter';
171		170
172	BEGIN {	171	BEGIN {
173	our $VERSION = '4.15';	172	our $VERSION = '4.19';
174		173
175	our @AIO_REQ = qw(aio_sendfile aio_seek aio_read aio_write aio_open aio_close	174	our @AIO_REQ = qw(aio_sendfile aio_seek aio_read aio_write aio_open aio_close
176	aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx	175	aio_stat aio_lstat aio_unlink aio_rmdir aio_readdir aio_readdirx
177	aio_scandir aio_symlink aio_readlink aio_realpath aio_sync	176	aio_scandir aio_symlink aio_readlink aio_realpath aio_sync
178	aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_fallocate	177	aio_fsync aio_syncfs aio_fdatasync aio_sync_file_range aio_allocate
179	aio_pathsync aio_readahead aio_fiemap	178	aio_pathsync aio_readahead aio_fiemap
180	aio_rename aio_link aio_move aio_copy aio_group	179	aio_rename aio_link aio_move aio_copy aio_group
181	aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown	180	aio_nop aio_mknod aio_load aio_rmtree aio_mkdir aio_chown
182	aio_chmod aio_utime aio_truncate	181	aio_chmod aio_utime aio_truncate
183	aio_msync aio_mtouch aio_mlock aio_mlockall	182	aio_msync aio_mtouch aio_mlock aio_mlockall
…		…
202		201
203	=head1 FUNCTIONS	202	=head1 FUNCTIONS
204		203
205	=head2 QUICK OVERVIEW	204	=head2 QUICK OVERVIEW
206		205
207	This section simply lists the prototypes of the most important functions	206	This section simply lists the prototypes most of the functions for
208	for quick reference. See the following sections for function-by-function	207	quick reference. See the following sections for function-by-function
209	documentation.	208	documentation.
210		209
211	aio_wd $pathname, $callback->($wd)	210	aio_wd $pathname, $callback->($wd)
212	aio_open $pathname, $flags, $mode, $callback->($fh)	211	aio_open $pathname, $flags, $mode, $callback->($fh)
213	aio_close $fh, $callback->($status)	212	aio_close $fh, $callback->($status)
…		…
222	aio_utime $fh_or_path, $atime, $mtime, $callback->($status)	221	aio_utime $fh_or_path, $atime, $mtime, $callback->($status)
223	aio_chown $fh_or_path, $uid, $gid, $callback->($status)	222	aio_chown $fh_or_path, $uid, $gid, $callback->($status)
224	aio_chmod $fh_or_path, $mode, $callback->($status)	223	aio_chmod $fh_or_path, $mode, $callback->($status)
225	aio_truncate $fh_or_path, $offset, $callback->($status)	224	aio_truncate $fh_or_path, $offset, $callback->($status)
226	aio_allocate $fh, $mode, $offset, $len, $callback->($status)	225	aio_allocate $fh, $mode, $offset, $len, $callback->($status)
		226	aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents)
227	aio_unlink $pathname, $callback->($status)	227	aio_unlink $pathname, $callback->($status)
228	aio_mknod $pathname, $mode, $dev, $callback->($status)	228	aio_mknod $pathname, $mode, $dev, $callback->($status)
229	aio_link $srcpath, $dstpath, $callback->($status)	229	aio_link $srcpath, $dstpath, $callback->($status)
230	aio_symlink $srcpath, $dstpath, $callback->($status)	230	aio_symlink $srcpath, $dstpath, $callback->($status)
231	aio_readlink $pathname, $callback->($link)	231	aio_readlink $pathname, $callback->($link)
…		…
361		361
362		362
363	=item aio_open $pathname, $flags, $mode, $callback->($fh)	363	=item aio_open $pathname, $flags, $mode, $callback->($fh)
364		364
365	Asynchronously open or create a file and call the callback with a newly	365	Asynchronously open or create a file and call the callback with a newly
366	created filehandle for the file.	366	created filehandle for the file (or C<undef> in case of an error).
367		367
368	The pathname passed to C<aio_open> must be absolute. See API NOTES, above,	368	The pathname passed to C<aio_open> must be absolute. See API NOTES, above,
369	for an explanation.	369	for an explanation.
370		370
371	The C<$flags> argument is a bitmask. See the C<Fcntl> module for a	371	The C<$flags> argument is a bitmask. See the C<Fcntl> module for a
…		…
602	namemax => 255,	602	namemax => 255,
603	frsize => 1024,	603	frsize => 1024,
604	fsid => 1810	604	fsid => 1810
605	}	605	}
606		606
		607	Here is a (likely partial) list of fsid values used by Linux - it is safe
		608	to hardcode these when the $^O is C<linux>:
		609
		610	0x0000adf5 adfs
		611	0x0000adff affs
		612	0x5346414f afs
		613	0x09041934 anon-inode filesystem
		614	0x00000187 autofs
		615	0x42465331 befs
		616	0x1badface bfs
		617	0x42494e4d binfmt_misc
		618	0x9123683e btrfs
		619	0x0027e0eb cgroupfs
		620	0xff534d42 cifs
		621	0x73757245 coda
		622	0x012ff7b7 coh
		623	0x28cd3d45 cramfs
		624	0x453dcd28 cramfs-wend (wrong endianness)
		625	0x64626720 debugfs
		626	0x00001373 devfs
		627	0x00001cd1 devpts
		628	0x0000f15f ecryptfs
		629	0x00414a53 efs
		630	0x0000137d ext
		631	0x0000ef53 ext2/ext3
		632	0x0000ef51 ext2
		633	0x00004006 fat
		634	0x65735546 fuseblk
		635	0x65735543 fusectl
		636	0x0bad1dea futexfs
		637	0x01161970 gfs2
		638	0x47504653 gpfs
		639	0x00004244 hfs
		640	0xf995e849 hpfs
		641	0x958458f6 hugetlbfs
		642	0x2bad1dea inotifyfs
		643	0x00009660 isofs
		644	0x000072b6 jffs2
		645	0x3153464a jfs
		646	0x6b414653 k-afs
		647	0x0bd00bd0 lustre
		648	0x0000137f minix
		649	0x0000138f minix 30 char names
		650	0x00002468 minix v2
		651	0x00002478 minix v2 30 char names
		652	0x00004d5a minix v3
		653	0x19800202 mqueue
		654	0x00004d44 msdos
		655	0x0000564c novell
		656	0x00006969 nfs
		657	0x6e667364 nfsd
		658	0x00003434 nilfs
		659	0x5346544e ntfs
		660	0x00009fa1 openprom
		661	0x7461636F ocfs2
		662	0x00009fa0 proc
		663	0x6165676c pstorefs
		664	0x0000002f qnx4
		665	0x858458f6 ramfs
		666	0x52654973 reiserfs
		667	0x00007275 romfs
		668	0x67596969 rpc_pipefs
		669	0x73636673 securityfs
		670	0xf97cff8c selinux
		671	0x0000517b smb
		672	0x534f434b sockfs
		673	0x73717368 squashfs
		674	0x62656572 sysfs
		675	0x012ff7b6 sysv2
		676	0x012ff7b5 sysv4
		677	0x01021994 tmpfs
		678	0x15013346 udf
		679	0x00011954 ufs
		680	0x54190100 ufs byteswapped
		681	0x00009fa2 usbdevfs
		682	0x01021997 v9fs
		683	0xa501fcf5 vxfs
		684	0xabba1974 xenfs
		685	0x012ff7b4 xenix
		686	0x58465342 xfs
		687	0x012fd16d xia
607		688
608	=item aio_utime $fh_or_path, $atime, $mtime, $callback->($status)	689	=item aio_utime $fh_or_path, $atime, $mtime, $callback->($status)
609		690
610	Works like perl's C<utime> function (including the special case of $atime	691	Works like perl's C<utime> function (including the special case of $atime
611	and $mtime being undef). Fractional times are supported if the underlying	692	and $mtime being undef). Fractional times are supported if the underlying
…		…
701		782
702		783
703	=item aio_realpath $pathname, $callback->($path)	784	=item aio_realpath $pathname, $callback->($path)
704		785
705	Asynchronously make the path absolute and resolve any symlinks in	786	Asynchronously make the path absolute and resolve any symlinks in
706	C<$path>. The resulting path only consists of directories (Same as	787	C<$path>. The resulting path only consists of directories (same as
707	L<Cwd::realpath>).	788	L<Cwd::realpath>).
708		789
709	This request can be used to get the absolute path of the current working	790	This request can be used to get the absolute path of the current working
710	directory by passing it a path of F<.> (a single dot).	791	directory by passing it a path of F<.> (a single dot).
711		792
712		793
713	=item aio_rename $srcpath, $dstpath, $callback->($status)	794	=item aio_rename $srcpath, $dstpath, $callback->($status)
714		795
715	Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as	796	Asynchronously rename the object at C<$srcpath> to C<$dstpath>, just as
716	rename(2) and call the callback with the result code.	797	rename(2) and call the callback with the result code.
		798
		799	On systems that support the AIO::WD working directory abstraction
		800	natively, the case C<[$wd, "."]> as C<$srcpath> is specialcased - instead
		801	of failing, C<rename> is called on the absolute path of C<$wd>.
717		802
718		803
719	=item aio_mkdir $pathname, $mode, $callback->($status)	804	=item aio_mkdir $pathname, $mode, $callback->($status)
720		805
721	Asynchronously mkdir (create) a directory and call the callback with	806	Asynchronously mkdir (create) a directory and call the callback with
…		…
725		810
726	=item aio_rmdir $pathname, $callback->($status)	811	=item aio_rmdir $pathname, $callback->($status)
727		812
728	Asynchronously rmdir (delete) a directory and call the callback with the	813	Asynchronously rmdir (delete) a directory and call the callback with the
729	result code.	814	result code.
		815
		816	On systems that support the AIO::WD working directory abstraction
		817	natively, the case C<[$wd, "."]> is specialcased - instead of failing,
		818	C<rmdir> is called on the absolute path of C<$wd>.
730		819
731		820
732	=item aio_readdir $pathname, $callback->($entries)	821	=item aio_readdir $pathname, $callback->($entries)
733		822
734	Unlike the POSIX call of the same name, C<aio_readdir> reads an entire	823	Unlike the POSIX call of the same name, C<aio_readdir> reads an entire
…		…
1099	}	1188	}
1100		1189
1101	=item aio_rmtree $pathname, $callback->($status)	1190	=item aio_rmtree $pathname, $callback->($status)
1102		1191
1103	Delete a directory tree starting (and including) C<$path>, return the	1192	Delete a directory tree starting (and including) C<$path>, return the
1104	status of the final C<rmdir> only. This is a composite request that	1193	status of the final C<rmdir> only. This is a composite request that
1105	uses C<aio_scandir> to recurse into and rmdir directories, and unlink	1194	uses C<aio_scandir> to recurse into and rmdir directories, and unlink
1106	everything else.	1195	everything else.
1107		1196
1108	=cut	1197	=cut
1109		1198
…		…
1229		1318
1230	This is a rather advanced IO::AIO call, which works best on mmap(2)ed	1319	This is a rather advanced IO::AIO call, which works best on mmap(2)ed
1231	scalars.	1320	scalars.
1232		1321
1233	It touches (reads or writes) all memory pages in the specified	1322	It touches (reads or writes) all memory pages in the specified
1234	range inside the scalar. All caveats and parameters are the same	1323	range inside the scalar. All caveats and parameters are the same
1235	as for C<aio_msync>, above, except for flags, which must be either	1324	as for C<aio_msync>, above, except for flags, which must be either
1236	C<0> (which reads all pages and ensures they are instantiated) or	1325	C<0> (which reads all pages and ensures they are instantiated) or
1237	C<IO::AIO::MT_MODIFY>, which modifies the memory page s(by reading and	1326	C<IO::AIO::MT_MODIFY>, which modifies the memory pages (by reading and
1238	writing an octet from it, which dirties the page).	1327	writing an octet from it, which dirties the page).
1239		1328
1240	=item aio_mlock $scalar, $offset = 0, $length = undef, $callback->($status)	1329	=item aio_mlock $scalar, $offset = 0, $length = undef, $callback->($status)
1241		1330
1242	This is a rather advanced IO::AIO call, which works best on mmap(2)ed	1331	This is a rather advanced IO::AIO call, which works best on mmap(2)ed
…		…
1276		1365
1277	aio_mlockall IO::AIO::MCL_FUTURE;	1366	aio_mlockall IO::AIO::MCL_FUTURE;
1278		1367
1279	=item aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents)	1368	=item aio_fiemap $fh, $start, $length, $flags, $count, $cb->(\@extents)
1280		1369
1281	Queries the extents of the given file (by calling the Linux FIEMAP ioctl,	1370	Queries the extents of the given file (by calling the Linux C<FIEMAP>
1282	see L<http://cvs.schmorp.de/IO-AIO/doc/fiemap.txt> for details). If the	1371	ioctl, see L<http://cvs.schmorp.de/IO-AIO/doc/fiemap.txt> for details). If
1283	C<ioctl> is not available on your OS, then this rquiest will fail with	1372	the ioctl is not available on your OS, then this request will fail with
1284	C<ENOSYS>.	1373	C<ENOSYS>.
1285		1374
1286	C<$start> is the starting offset to query extents for, C<$length> is the	1375	C<$start> is the starting offset to query extents for, C<$length> is the
1287	size of the range to query - if it is C<undef>, then the whole file will	1376	size of the range to query - if it is C<undef>, then the whole file will
1288	be queried.	1377	be queried.
…		…
1291	C<IO::AIO::FIEMAP_FLAG_XATTR> - C<IO::AIO::FIEMAP_FLAGS_COMPAT> is also	1380	C<IO::AIO::FIEMAP_FLAG_XATTR> - C<IO::AIO::FIEMAP_FLAGS_COMPAT> is also
1292	exported), and is normally C<0> or C<IO::AIO::FIEMAP_FLAG_SYNC> to query	1381	exported), and is normally C<0> or C<IO::AIO::FIEMAP_FLAG_SYNC> to query
1293	the data portion.	1382	the data portion.
1294		1383
1295	C<$count> is the maximum number of extent records to return. If it is	1384	C<$count> is the maximum number of extent records to return. If it is
1296	C<undef>, then IO::AIO queries all extents of the file. As a very special	1385	C<undef>, then IO::AIO queries all extents of the range. As a very special
1297	case, if it is C<0>, then the callback receives the number of extents	1386	case, if it is C<0>, then the callback receives the number of extents
1298	instead of the extents themselves.	1387	instead of the extents themselves (which is unreliable, see below).
1299		1388
1300	If an error occurs, the callback receives no arguments. The special	1389	If an error occurs, the callback receives no arguments. The special
1301	C<errno> value C<IO::AIO::EBADR> is available to test for flag errors.	1390	C<errno> value C<IO::AIO::EBADR> is available to test for flag errors.
1302		1391
1303	Otherwise, the callback receives an array reference with extent	1392	Otherwise, the callback receives an array reference with extent
…		…
1305	following members:	1394	following members:
1306		1395
1307	[$logical, $physical, $length, $flags]	1396	[$logical, $physical, $length, $flags]
1308		1397
1309	Flags is any combination of the following flag values (typically either C<0>	1398	Flags is any combination of the following flag values (typically either C<0>
1310	or C<IO::AIO::FIEMAP_EXTENT_LAST>):	1399	or C<IO::AIO::FIEMAP_EXTENT_LAST> (1)):
1311		1400
1312	C<IO::AIO::FIEMAP_EXTENT_LAST>, C<IO::AIO::FIEMAP_EXTENT_UNKNOWN>,	1401	C<IO::AIO::FIEMAP_EXTENT_LAST>, C<IO::AIO::FIEMAP_EXTENT_UNKNOWN>,
1313	C<IO::AIO::FIEMAP_EXTENT_DELALLOC>, C<IO::AIO::FIEMAP_EXTENT_ENCODED>,	1402	C<IO::AIO::FIEMAP_EXTENT_DELALLOC>, C<IO::AIO::FIEMAP_EXTENT_ENCODED>,
1314	C<IO::AIO::FIEMAP_EXTENT_DATA_ENCRYPTED>, C<IO::AIO::FIEMAP_EXTENT_NOT_ALIGNED>,	1403	C<IO::AIO::FIEMAP_EXTENT_DATA_ENCRYPTED>, C<IO::AIO::FIEMAP_EXTENT_NOT_ALIGNED>,
1315	C<IO::AIO::FIEMAP_EXTENT_DATA_INLINE>, C<IO::AIO::FIEMAP_EXTENT_DATA_TAIL>,	1404	C<IO::AIO::FIEMAP_EXTENT_DATA_INLINE>, C<IO::AIO::FIEMAP_EXTENT_DATA_TAIL>,
1316	C<IO::AIO::FIEMAP_EXTENT_UNWRITTEN>, C<IO::AIO::FIEMAP_EXTENT_MERGED> or	1405	C<IO::AIO::FIEMAP_EXTENT_UNWRITTEN>, C<IO::AIO::FIEMAP_EXTENT_MERGED> or
1317	C<IO::AIO::FIEMAP_EXTENT_SHARED>.	1406	C<IO::AIO::FIEMAP_EXTENT_SHARED>.
		1407
		1408	At the time of this writing (Linux 3.2), this requets is unreliable unless
		1409	C<$count> is C<undef>, as the kernel has all sorts of bugs preventing
		1410	it to return all extents of a range for files with large number of
		1411	extents. The code works around all these issues if C<$count> is undef.
1318		1412
1319	=item aio_group $callback->(...)	1413	=item aio_group $callback->(...)
1320		1414
1321	This is a very special aio request: Instead of doing something, it is a	1415	This is a very special aio request: Instead of doing something, it is a
1322	container for other aio requests, which is useful if you want to bundle	1416	container for other aio requests, which is useful if you want to bundle
…		…
1438	will still point to the original directory. Most functions accepting a	1532	will still point to the original directory. Most functions accepting a
1439	pathname will use the directory fd on newer systems, and the string on	1533	pathname will use the directory fd on newer systems, and the string on
1440	older systems. Some functions (such as realpath) will always rely on the	1534	older systems. Some functions (such as realpath) will always rely on the
1441	string form of the pathname.	1535	string form of the pathname.
1442		1536
1443	So this fucntionality is mainly useful to get some protection against	1537	So this functionality is mainly useful to get some protection against
1444	C<chdir>, to easily get an absolute path out of a relative path for future	1538	C<chdir>, to easily get an absolute path out of a relative path for future
1445	reference, and to speed up doing many operations in the same directory	1539	reference, and to speed up doing many operations in the same directory
1446	(e.g. when stat'ing all files in a directory).	1540	(e.g. when stat'ing all files in a directory).
1447		1541
1448	The following functions implement this working directory abstraction:	1542	The following functions implement this working directory abstraction:
…		…
1469	=item IO::AIO::CWD	1563	=item IO::AIO::CWD
1470		1564
1471	This is a compiletime constant (object) that represents the process	1565	This is a compiletime constant (object) that represents the process
1472	current working directory.	1566	current working directory.
1473		1567
1474	Specifying this object as working directory object for a pathname is as	1568	Specifying this object as working directory object for a pathname is as if
1475	if the pathname would be specified directly, without a directory object,	1569	the pathname would be specified directly, without a directory object. For
1476	e.g., these calls are functionally identical:	1570	example, these calls are functionally identical:
1477		1571
1478	aio_stat "somefile", sub { ... };	1572	aio_stat "somefile", sub { ... };
1479	aio_stat [IO::AIO::CWD, "somefile"], sub { ... };	1573	aio_stat [IO::AIO::CWD, "somefile"], sub { ... };
1480		1574
1481	=back	1575	=back
1482		1576
		1577	To recover the path associated with an IO::AIO::WD object, you can use
		1578	C<aio_realpath>:
		1579
		1580	aio_realpath $wd, sub {
		1581	warn "path is $_[0]\n";
		1582	};
		1583
		1584	Currently, C<aio_statvfs> always, and C<aio_rename> and C<aio_rmdir>
		1585	sometimes, fall back to using an absolue path.
1483		1586
1484	=head2 IO::AIO::REQ CLASS	1587	=head2 IO::AIO::REQ CLASS
1485		1588
1486	All non-aggregate C<aio_*> functions return an object of this class when	1589	All non-aggregate C<aio_*> functions return an object of this class when
1487	called in non-void context.	1590	called in non-void context.
…		…
1665		1768
1666	See C<poll_cb> for an example.	1769	See C<poll_cb> for an example.
1667		1770
1668	=item IO::AIO::poll_cb	1771	=item IO::AIO::poll_cb
1669		1772
1670	Process some outstanding events on the result pipe. You have to call	1773	Process some requests that have reached the result phase (i.e. they have
		1774	been executed but the results are not yet reported). You have to call
		1775	this "regularly" to finish outstanding requests.
		1776
1671	this regularly. Returns C<0> if all events could be processed (or there	1777	Returns C<0> if all events could be processed (or there were no
1672	were no events to process), or C<-1> if it returned earlier for whatever	1778	events to process), or C<-1> if it returned earlier for whatever
1673	reason. Returns immediately when no events are outstanding. The amount of	1779	reason. Returns immediately when no events are outstanding. The amount
1674	events processed depends on the settings of C<IO::AIO::max_poll_req> and	1780	of events processed depends on the settings of C<IO::AIO::max_poll_req>,
1675	C<IO::AIO::max_poll_time>.	1781	C<IO::AIO::max_poll_time> and C<IO::AIO::max_outstanding>.
1676		1782
1677	If not all requests were processed for whatever reason, the filehandle	1783	If not all requests were processed for whatever reason, the poll file
1678	will still be ready when C<poll_cb> returns, so normally you don't have to	1784	descriptor will still be ready when C<poll_cb> returns, so normally you
1679	do anything special to have it called later.	1785	don't have to do anything special to have it called later.
1680		1786
1681	Apart from calling C<IO::AIO::poll_cb> when the event filehandle becomes	1787	Apart from calling C<IO::AIO::poll_cb> when the event filehandle becomes
1682	ready, it can be beneficial to call this function from loops which submit	1788	ready, it can be beneficial to call this function from loops which submit
1683	a lot of requests, to make sure the results get processed when they become	1789	a lot of requests, to make sure the results get processed when they become
1684	available and not just when the loop is finished and the event loop takes	1790	available and not just when the loop is finished and the event loop takes
…		…
1693	poll => 'r', async => 1,	1799	poll => 'r', async => 1,
1694	cb => \&IO::AIO::poll_cb);	1800	cb => \&IO::AIO::poll_cb);
1695		1801
1696	=item IO::AIO::poll_wait	1802	=item IO::AIO::poll_wait
1697		1803
1698	If there are any outstanding requests and none of them in the result	1804	Wait until either at least one request is in the result phase or no
1699	phase, wait till the result filehandle becomes ready for reading (simply	1805	requests are outstanding anymore.
1700	does a C<select> on the filehandle. This is useful if you want to	1806
1701	synchronously wait for some requests to finish).	1807	This is useful if you want to synchronously wait for some requests to
		1808	become ready, without actually handling them.
1702		1809
1703	See C<nreqs> for an example.	1810	See C<nreqs> for an example.
1704		1811
1705	=item IO::AIO::poll	1812	=item IO::AIO::poll
1706		1813
…		…
2009	=item IO::AIO::tee $r_fh, $w_fh, $length, $flags	2116	=item IO::AIO::tee $r_fh, $w_fh, $length, $flags
2010		2117
2011	Calls the GNU/Linux C<tee(2)> syscall, see it's manpage and the	2118	Calls the GNU/Linux C<tee(2)> syscall, see it's manpage and the
2012	description for C<IO::AIO::splice> above for details.	2119	description for C<IO::AIO::splice> above for details.
2013		2120
		2121	=item $actual_size = IO::AIO::pipesize $r_fh[, $new_size]
		2122
		2123	Attempts to query or change the pipe buffer size. Obviously works only
		2124	on pipes, and currently works only on GNU/Linux systems, and fails with
		2125	C<-1>/C<ENOSYS> everywhere else. If anybody knows how to influence pipe buffer
		2126	size on other systems, drop me a note.
		2127
2014	=back	2128	=back
2015		2129
2016	=cut	2130	=cut
2017		2131
2018	min_parallel 8;	2132	min_parallel 8;

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Comparing IO-AIO/AIO.pm (file contents): Revision 1.229 by root, Wed Jul 25 16:32:30 2012 UTC vs. Revision 1.243 by root, Sat Sep 7 23:18:23 2013 UTC

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Comparing IO-AIO/AIO.pm (file contents):
Revision 1.229 by root, Wed Jul 25 16:32:30 2012 UTC vs.
Revision 1.243 by root, Sat Sep 7 23:18:23 2013 UTC