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Comparing IO-AIO/Changes (file contents):
Revision 1.125 by root, Fri Jun 1 14:40:01 2007 UTC vs.
Revision 1.211 by root, Sat Jan 2 13:02:20 2010 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
8TODO: fallocate, if it wouldn't be so useless.
8 9
92.4 10 - (libeio) max_poll_time was not properly converted to ticks.
10 - fix aio_busy w.r.t. fractional delays. 11 - clarify cancel_subs description.
11 - add aio_chmod, aio_chown, aio_utime (linux successfully demonstrated 12 - IO::AIO::sendfile did not actually return the return value
13 from the sendfile call.
14 - (libeio) tentatively support darwin in sendfile.
15
163.31 Thu Nov 12 02:14:29 CET 2009
17 - fix result status documentation of aio_copy, aio_move.
18 - speed up object creation considerably by avoiding
19 hash lookups.
20
213.3 Wed Aug 5 13:52:58 CEST 2009
22 - use common::sense.
23 - use common schmorp.h header.
24 - allow integers (file descriptors) in addition to file handles.
25 - take advantage of linux' eventfd (but it seems slower on smp?).
26 - use poll not select on posix platforms.
27
283.261 Wed Jul 1 10:11:51 CEST 2009
29 - more 0S X workarounds (patch by Tokuhiro Matsuno).
30
313.26 Tue Jun 30 09:33:26 CEST 2009
32 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
33 try to work around this horribly broken OS in a somewhat hackish
34 way. might help other os's too.
35
363.25 Sat Jun 27 05:18:26 CEST 2009
37 - added IO::AIO::fadvise and IO::AIO::sendfile.
38 - (libeio) replaced quicksort+insertion sort by a tuned radix
39 sort + insertion sort, resulting in comparable runtime (usually
40 faster) to the old version, but without any ill side effects on
41 degenerated (for quicksort) data.
42 - (libeio) correctly sort dirs by inodes if we have perfect type
43 knowledge and DIRS_FIRST is used.
44 - (libeio) internally the wrong DT_* constants were used, but no
45 known system has differing EIO_DT_*/DT_* values, so not an issue.
46 - removed a (harmless) assert that was left over on the code
47 but should not have been.
48 - use more correct types (change IO length from IV to VAL64,
49 which makes a difference on systems without 64 bit perls).
50
513.23 Sat Jun 13 16:57:58 CEST 2009
52 - fix off-by-one bug in aio_readdir that was introduced in the
53 rushed 3.22 release.
54
553.22 Sat Jun 13 15:32:40 CEST 2009
56 - speed up readdirx sort algorithm slightly.
57 - bin/treescan was missing from distro tarball.
58
593.21 Fri Jun 12 18:45:53 CEST 2009
60 - new options --dirs and --files for treescan.
61 - install bin/treescan by default.
62 - (libeio) aio_readdir can now be cancelled while executing.
63 - fix a printf format string for 64 bit systems (could lead
64 to problems on big endian 64 bit systems).
65 - do not use qsort() but our own algorithm: glibc initialises
66 the whole locale and I/O subsystem inside qsort, causing
67 a stack overflow on 32 bit machines. The new sort uses much less
68 stack and is more than twice as fast in typical situations.
69
703.2 Sun Jun 7 20:30:05 CEST 2009
71 - (libeio) pwrite emulation was even more flawed than intended and did
72 not restore the file offset.
73 - add aio_readdirx, which can return inode and filetype and sort
74 the names in various ways.
75 - unfortunately, utime, chmod, chown on an open file that has just
76 been written can easily block, which caused aio_copy to block the
77 process. no more!
78 - no longer rely on dst path in aio_copy when futime is available.
79
803.19 Tue Apr 21 22:05:21 CEST 2009
81 - more perl 5.10 workarounds for aio_read and write.
82 - aio_write no longer modifies the sv (if possible).
83 - aio_read now works correctly with magic values.
84
853.18 Sun Apr 19 21:17:32 CEST 2009
86 - better diagnostics when some aio_* functions get passed an illegal fh.
87 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
88
893.17 Thu Nov 20 08:45:36 CET 2008
90 - (libeio) added aio_sync_file_range (untested).
91 - add aio_busy to @IO::AIO::AIO_REQ.
92
933.16 Wed Oct 22 18:28:01 CEST 2008
94 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
95 part to improve portability to perl 5.8 (reported by szymon).
96
973.15 Mon Oct 13 00:39:55 CEST 2008
98 - automatic removal of feeders was broken.
99 - (libeio) use a more robust method to detect whether a feeder
100 has added something to the group or not.
101
1023.1 Thu Oct 2 13:34:40 CEST 2008
103 - pre-deref the passed callback object, for increased speed
104 and decreased memory usage.
105 - call on_next_submit callback even for aio_group - impact unknown,
106 but seems more correct.
107 - $req->cb now returns the original callback.
108 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
109 requiring a thread switch.
110 - (libeio) status code of aio_futime and aio_utime was always passed 0.
111 - do some other ยต-optimisations.
112
1133.07 Sat Aug 2 16:06:13 CEST 2008
114 - do not include LIBS in autoconf tests.
115
1163.06 Tue Jul 15 12:41:32 CEST 2008
117 - move preadwritelock definition before it's first reference,
118 to make it compile again on broken platforms (they still exist)
119 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
120
1213.05 Thu Jun 19 23:23:52 CEST 2008
122 - work around perl overriding readdir etc. with thread-unsafe
123 (sic!) versions.
124
1253.04 Wed Jun 18 01:35:38 CEST 2008
126 - (libeio) fix eio_mknod, which confused it's arguments.
127 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
128 is stupid.
129 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
130 - (libeio) fix a bug that could potentially cause IO::AIO
131 not to get initialised properly.
132
1333.03 Thu May 29 05:33:30 CEST 2008
134 - (libeio) correctly call pthread_attr_destroy ().
135 - (libeio) work around broken bsd headers once more.
136 - reduce shared library size again by not including wrappers.
137 - max_outstanding could cause poll to enter a busy-waiting loop.
138 - document the new IO::AIO::poll_cb result value.
139
1403.02 Mon May 12 02:32:02 CEST 2008
141 - fix a memory leak on aio_readlink.
142 - bring back working fchmod.
143 - nop and busy now set result to 0.
144 - set errno to ENOMEM when allocation fails.
145
1463.01 Sun May 11 03:07:03 CEST 2008
147 - (libeio) make it compile on systems without readahead or readdir_r.
148 - (libeio) improve configure check for readahead availability.
149 - do not try to link against -lrt.
150 - use a separate configure script for IO::AIO (not the libeio one).
151
1523.0 Sun May 11 00:57:14 CEST 2008
153 - added bin/treescan to the distribution.
154 - switched to using libeio.
155 - LOTS OF INCOMPATIBLE CHANGES:
156 - remove signal functionality, it is not worth the effort.
157 - max_outstanding no longer returns the previous number of requests.
158 - poll_cb no longer returns number of requests.
159
1602.62 Sat Apr 26 13:59:33 CEST 2008
161 - port to solaris perls configured for old posix
162 (analysed by Jost Krieger).
163 - keep a reference to the perl filehandle object in aio_close,
164 so it doesn't get closed prematurely, leading to ugly races.
165
1662.61 Wed Apr 16 18:45:02 CEST 2008
167 - fix treescan output duplication and improve output ordering.
168 also display files given on the commandline.
169 - use a different algorithm for aio_close that is faster
170 and probably has even lower chances of blocking.
171 - do our own stack memory management for threads - linux
172 allocates outrageous amounts of VM (not so bad unless you
173 use mlockall...), which severely limits the number of threads
174 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
175 and 4096 * sizeof (long) (usually this is 16..64k).
176
1772.6 Sun Mar 30 08:28:11 CEST 2008
178 - added aio_sync.
179 - added aio_pathsync.
180 - fix prototypes of (void) functions.
181
1822.51 Sat Oct 6 16:04:54 CEST 2007
183 - perlio isn't generally threadsafe, so aio_close could not work reliably.
184 aio_close now tries a safe hack that might not be that asynchronous
185 (see the manpage for details).
186 - discard callback return values as to not grow the stack endlessly
187 when poll_cb handles many requests without returning.
188 - minor code cleanups.
189
1902.5 Thu Oct 4 14:49:08 CEST 2007
191 - replaced _fd2fh with faster xs code.
192 - aio_close will now try to do "the right thing" and thus might
193 work sensibly for the very first time.
194
1952.41 Mon Sep 24 21:28:21 CEST 2007
196 - after fork, invest some work to make sure that the poll_fileno
197 stays stable (by dup2'ing the new fd over the old one), to make
198 it easier for programs/libs that don't control their forking
199 behaviour and cannot recreate their watchers.
200
2012.4 Sun Aug 5 18:44:22 CEST 2007
202 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
12 that you can block on futimes...). 203 successfully demonstrated that you can block on futimes...).
13 - allow undef as fileoffset for aio_read/write and use read/write(2) 204 - allow undef as fileoffset for aio_read/write and use read/write(2)
14 internally (useful for sockets or O_APPEND handles). 205 internally (useful for sockets or O_APPEND handles).
206 - allow undef for length in aio_write.
207 - negative dataoffsets work as expected now in aio_read/aio_write.
15 - use NV instead of UV for 32 bit perls and file offsets, as NVs 208 - use NV instead of UV for 32 bit perls and file offsets, as NVs
16 have a larger range then. 209 have a larger range then.
17 - shared code between BDB and IO::AIO. 210 - shared code between BDB and IO::AIO.
211 - aio_busy was completely broken. now fixed.
212 - readahead emulation now returns something.
18 - correctly set errno to ENOSYS on unimplemented functions 213 - correctly set errno to ENOSYS on unimplemented functions
19 (should never happen, though). 214 (should never happen, though).
215 - large changes to make it partially compile and run on win32,
216 but win32 lacks too much functionality, and perl overrides way
217 too many functions with crashing versions.
20 218
212.33 Tue Jan 23 23:55:41 CET 2007 2192.33 Tue Jan 23 23:55:41 CET 2007
22 - fix install path (Andreas J. Koenig). 220 - fix install path (Andreas J. Koenig).
23 221
242.32 Mon Jan 22 16:56:23 CET 2007 2222.32 Mon Jan 22 16:56:23 CET 2007

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