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Comparing IO-AIO/Changes (file contents):
Revision 1.123 by root, Fri Jun 1 06:52:33 2007 UTC vs.
Revision 1.194 by root, Sun Jun 14 20:36:59 2009 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: better autoconf.pm that can return LIBS etc.
4TODO: aio_cptree/mvtree 4TODO: aio_cptree/mvtree
5TODO: reduce condvar fairness: schedule hot-cache-threads first? 5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: fix setsig
7TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) 6TODO: splice/tee/vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
8 8
92.4 9 - avoid some degenerate sorting cases on systems without d_ino,
10 - fix aio_busy w.r.t. fractional delays. 10 or when the dentries are mostly sorted by inode already (common
11 - add aio_chmod, aio_chown, aio_utime (linux successfully demonstrated 11 with freshly unpacked tarfiles for example).
12 - correctly sort dirs by inodes only if we have perfect type
13 knowledge and DIRS_FIRST is used.
14 - speed up directory entry sorting further by some 20%.
15
163.23 Sat Jun 13 16:57:58 CEST 2009
17 - fix off-by-one bug in aio_readdir that was introduced in the
18 rushed 3.22 release.
19
203.22 Sat Jun 13 15:32:40 CEST 2009
21 - speed up readdirx sort algorithm slightly.
22 - bin/treescan was missing from distro tarball.
23
243.21 Fri Jun 12 18:45:53 CEST 2009
25 - new options --dirs and --files for treescan.
26 - install bin/treescan by default.
27 - (libeio) aio_readdir can now be cancelled while executing.
28 - fix a printf format string for 64 bit systems (could lead
29 to problems on big endian 64 bit systems).
30 - do not use qsort() but our own algorithm: glibc initialises
31 the whole locale and I/O subsystem inside qsort, causing
32 a stack overflow on 32 bit machines. The new sort uses much less
33 stack and is more than twice as fast in typical situations.
34
353.2 Sun Jun 7 20:30:05 CEST 2009
36 - (libeio) pwrite emulation was even more flawed than intended and did
37 not restore the file offset.
38 - add aio_readdirx, which can return inode and filetype and sort
39 the names in various ways.
40 - unfortunately, utime, chmod, chown on an open file that has just
41 been written can easily block, which caused aio_copy to block the
42 process. no more!
43 - no longer rely on dst path in aio_copy when futime is available.
44
453.19 Tue Apr 21 22:05:21 CEST 2009
46 - more perl 5.10 workarounds for aio_read and write.
47 - aio_write no longer modifies the sv (if possible).
48 - aio_read now works correctly with magic values.
49
503.18 Sun Apr 19 21:17:32 CEST 2009
51 - better diagnostics when some aio_* functions get passed an illegal fh.
52 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
53
543.17 Thu Nov 20 08:45:36 CET 2008
55 - (libeio) added aio_sync_file_range (untested).
56 - add aio_busy to @IO::AIO::AIO_REQ.
57
583.16 Wed Oct 22 18:28:01 CEST 2008
59 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
60 part to improve portability to perl 5.8 (reported by szymon).
61
623.15 Mon Oct 13 00:39:55 CEST 2008
63 - automatic removal of feeders was broken.
64 - (libeio) use a more robust method to detect whether a feeder
65 has added something to the group or not.
66
673.1 Thu Oct 2 13:34:40 CEST 2008
68 - pre-deref the passed callback object, for increased speed
69 and decreased memory usage.
70 - call on_next_submit callback even for aio_group - impact unknown,
71 but seems more correct.
72 - $req->cb now returns the original callback.
73 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
74 requiring a thread switch.
75 - (libeio) status code of aio_futime and aio_utime was always passed 0.
76 - do some other ยต-optimisations.
77
783.07 Sat Aug 2 16:06:13 CEST 2008
79 - do not include LIBS in autoconf tests.
80
813.06 Tue Jul 15 12:41:32 CEST 2008
82 - move preadwritelock definition before it's first reference,
83 to make it compile again on broken platforms (they still exist)
84 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
85
863.05 Thu Jun 19 23:23:52 CEST 2008
87 - work around perl overriding readdir etc. with thread-unsafe
88 (sic!) versions.
89
903.04 Wed Jun 18 01:35:38 CEST 2008
91 - (libeio) fix eio_mknod, which confused it's arguments.
92 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
93 is stupid.
94 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
95 - (libeio) fix a bug that could potentially cause IO::AIO
96 not to get initialised properly.
97
983.03 Thu May 29 05:33:30 CEST 2008
99 - (libeio) correctly call pthread_attr_destroy ().
100 - (libeio) work around broken bsd headers once more.
101 - reduce shared library size again by not including wrappers.
102 - max_outstanding could cause poll to enter a busy-waiting loop.
103 - document the new IO::AIO::poll_cb result value.
104
1053.02 Mon May 12 02:32:02 CEST 2008
106 - fix a memory leak on aio_readlink.
107 - bring back working fchmod.
108 - nop and busy now set result to 0.
109 - set errno to ENOMEM when allocation fails.
110
1113.01 Sun May 11 03:07:03 CEST 2008
112 - (libeio) make it compile on systems without readahead or readdir_r.
113 - (libeio) improve configure check for readahead availability.
114 - do not try to link against -lrt.
115 - use a separate configure script for IO::AIO (not the libeio one).
116
1173.0 Sun May 11 00:57:14 CEST 2008
118 - added bin/treescan to the distribution.
119 - switched to using libeio.
120 - LOTS OF INCOMPATIBLE CHANGES:
121 - remove signal functionality, it is not worth the effort.
122 - max_outstanding no longer returns the previous number of requests.
123 - poll_cb no longer returns number of requests.
124
1252.62 Sat Apr 26 13:59:33 CEST 2008
126 - port to solaris perls configured for old posix
127 (analysed by Jost Krieger).
128 - keep a reference to the perl filehandle object in aio_close,
129 so it doesn't get closed prematurely, leading to ugly races.
130
1312.61 Wed Apr 16 18:45:02 CEST 2008
132 - fix treescan output duplication and improve output ordering.
133 also display files given on the commandline.
134 - use a different algorithm for aio_close that is faster
135 and probably has even lower chances of blocking.
136 - do our own stack memory management for threads - linux
137 allocates outrageous amounts of VM (not so bad unless you
138 use mlockall...), which severely limits the number of threads
139 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
140 and 4096 * sizeof (long) (usually this is 16..64k).
141
1422.6 Sun Mar 30 08:28:11 CEST 2008
143 - added aio_sync.
144 - added aio_pathsync.
145 - fix prototypes of (void) functions.
146
1472.51 Sat Oct 6 16:04:54 CEST 2007
148 - perlio isn't generally threadsafe, so aio_close could not work reliably.
149 aio_close now tries a safe hack that might not be that asynchronous
150 (see the manpage for details).
151 - discard callback return values as to not grow the stack endlessly
152 when poll_cb handles many requests without returning.
153 - minor code cleanups.
154
1552.5 Thu Oct 4 14:49:08 CEST 2007
156 - replaced _fd2fh with faster xs code.
157 - aio_close will now try to do "the right thing" and thus might
158 work sensibly for the very first time.
159
1602.41 Mon Sep 24 21:28:21 CEST 2007
161 - after fork, invest some work to make sure that the poll_fileno
162 stays stable (by dup2'ing the new fd over the old one), to make
163 it easier for programs/libs that don't control their forking
164 behaviour and cannot recreate their watchers.
165
1662.4 Sun Aug 5 18:44:22 CEST 2007
167 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
12 that you can block on futimes...). 168 successfully demonstrated that you can block on futimes...).
169 - allow undef as fileoffset for aio_read/write and use read/write(2)
170 internally (useful for sockets or O_APPEND handles).
171 - allow undef for length in aio_write.
172 - negative dataoffsets work as expected now in aio_read/aio_write.
173 - use NV instead of UV for 32 bit perls and file offsets, as NVs
174 have a larger range then.
13 - shared code between BDB and IO::AIO. 175 - shared code between BDB and IO::AIO.
176 - aio_busy was completely broken. now fixed.
177 - readahead emulation now returns something.
14 - correctly set errno to ENOSYS on unimplemented functions 178 - correctly set errno to ENOSYS on unimplemented functions
15 (should never happen, though). 179 (should never happen, though).
180 - large changes to make it partially compile and run on win32,
181 but win32 lacks too much functionality, and perl overrides way
182 too many functions with crashing versions.
16 183
172.33 Tue Jan 23 23:55:41 CET 2007 1842.33 Tue Jan 23 23:55:41 CET 2007
18 - fix install path (Andreas J. Koenig). 185 - fix install path (Andreas J. Koenig).
19 186
202.32 Mon Jan 22 16:56:23 CET 2007 1872.32 Mon Jan 22 16:56:23 CET 2007

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