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Comparing IO-AIO/Changes (file contents):
Revision 1.126 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.210 by root, Sat Jan 2 12:58:37 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
153.31 Thu Nov 12 02:14:29 CET 2009
16 - fix result status documentation of aio_copy, aio_move.
17 - speed up object creation considerably by avoiding
18 hash lookups.
19
203.3 Wed Aug 5 13:52:58 CEST 2009
21 - use common::sense.
22 - use common schmorp.h header.
23 - allow integers (file descriptors) in addition to file handles.
24 - take advantage of linux' eventfd (but it seems slower on smp?).
25 - use poll not select on posix platforms.
26
273.261 Wed Jul 1 10:11:51 CEST 2009
28 - more 0S X workarounds (patch by Tokuhiro Matsuno).
29
303.26 Tue Jun 30 09:33:26 CEST 2009
31 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
32 try to work around this horribly broken OS in a somewhat hackish
33 way. might help other os's too.
34
353.25 Sat Jun 27 05:18:26 CEST 2009
36 - added IO::AIO::fadvise and IO::AIO::sendfile.
37 - (libeio) replaced quicksort+insertion sort by a tuned radix
38 sort + insertion sort, resulting in comparable runtime (usually
39 faster) to the old version, but without any ill side effects on
40 degenerated (for quicksort) data.
41 - (libeio) correctly sort dirs by inodes if we have perfect type
42 knowledge and DIRS_FIRST is used.
43 - (libeio) internally the wrong DT_* constants were used, but no
44 known system has differing EIO_DT_*/DT_* values, so not an issue.
45 - removed a (harmless) assert that was left over on the code
46 but should not have been.
47 - use more correct types (change IO length from IV to VAL64,
48 which makes a difference on systems without 64 bit perls).
49
503.23 Sat Jun 13 16:57:58 CEST 2009
51 - fix off-by-one bug in aio_readdir that was introduced in the
52 rushed 3.22 release.
53
543.22 Sat Jun 13 15:32:40 CEST 2009
55 - speed up readdirx sort algorithm slightly.
56 - bin/treescan was missing from distro tarball.
57
583.21 Fri Jun 12 18:45:53 CEST 2009
59 - new options --dirs and --files for treescan.
60 - install bin/treescan by default.
61 - (libeio) aio_readdir can now be cancelled while executing.
62 - fix a printf format string for 64 bit systems (could lead
63 to problems on big endian 64 bit systems).
64 - do not use qsort() but our own algorithm: glibc initialises
65 the whole locale and I/O subsystem inside qsort, causing
66 a stack overflow on 32 bit machines. The new sort uses much less
67 stack and is more than twice as fast in typical situations.
68
693.2 Sun Jun 7 20:30:05 CEST 2009
70 - (libeio) pwrite emulation was even more flawed than intended and did
71 not restore the file offset.
72 - add aio_readdirx, which can return inode and filetype and sort
73 the names in various ways.
74 - unfortunately, utime, chmod, chown on an open file that has just
75 been written can easily block, which caused aio_copy to block the
76 process. no more!
77 - no longer rely on dst path in aio_copy when futime is available.
78
793.19 Tue Apr 21 22:05:21 CEST 2009
80 - more perl 5.10 workarounds for aio_read and write.
81 - aio_write no longer modifies the sv (if possible).
82 - aio_read now works correctly with magic values.
83
843.18 Sun Apr 19 21:17:32 CEST 2009
85 - better diagnostics when some aio_* functions get passed an illegal fh.
86 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
87
883.17 Thu Nov 20 08:45:36 CET 2008
89 - (libeio) added aio_sync_file_range (untested).
90 - add aio_busy to @IO::AIO::AIO_REQ.
91
923.16 Wed Oct 22 18:28:01 CEST 2008
93 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
94 part to improve portability to perl 5.8 (reported by szymon).
95
963.15 Mon Oct 13 00:39:55 CEST 2008
97 - automatic removal of feeders was broken.
98 - (libeio) use a more robust method to detect whether a feeder
99 has added something to the group or not.
100
1013.1 Thu Oct 2 13:34:40 CEST 2008
102 - pre-deref the passed callback object, for increased speed
103 and decreased memory usage.
104 - call on_next_submit callback even for aio_group - impact unknown,
105 but seems more correct.
106 - $req->cb now returns the original callback.
107 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
108 requiring a thread switch.
109 - (libeio) status code of aio_futime and aio_utime was always passed 0.
110 - do some other ยต-optimisations.
111
1123.07 Sat Aug 2 16:06:13 CEST 2008
113 - do not include LIBS in autoconf tests.
114
1153.06 Tue Jul 15 12:41:32 CEST 2008
116 - move preadwritelock definition before it's first reference,
117 to make it compile again on broken platforms (they still exist)
118 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
119
1203.05 Thu Jun 19 23:23:52 CEST 2008
121 - work around perl overriding readdir etc. with thread-unsafe
122 (sic!) versions.
123
1243.04 Wed Jun 18 01:35:38 CEST 2008
125 - (libeio) fix eio_mknod, which confused it's arguments.
126 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
127 is stupid.
128 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
129 - (libeio) fix a bug that could potentially cause IO::AIO
130 not to get initialised properly.
131
1323.03 Thu May 29 05:33:30 CEST 2008
133 - (libeio) correctly call pthread_attr_destroy ().
134 - (libeio) work around broken bsd headers once more.
135 - reduce shared library size again by not including wrappers.
136 - max_outstanding could cause poll to enter a busy-waiting loop.
137 - document the new IO::AIO::poll_cb result value.
138
1393.02 Mon May 12 02:32:02 CEST 2008
140 - fix a memory leak on aio_readlink.
141 - bring back working fchmod.
142 - nop and busy now set result to 0.
143 - set errno to ENOMEM when allocation fails.
144
1453.01 Sun May 11 03:07:03 CEST 2008
146 - (libeio) make it compile on systems without readahead or readdir_r.
147 - (libeio) improve configure check for readahead availability.
148 - do not try to link against -lrt.
149 - use a separate configure script for IO::AIO (not the libeio one).
150
1513.0 Sun May 11 00:57:14 CEST 2008
152 - added bin/treescan to the distribution.
153 - switched to using libeio.
154 - LOTS OF INCOMPATIBLE CHANGES:
155 - remove signal functionality, it is not worth the effort.
156 - max_outstanding no longer returns the previous number of requests.
157 - poll_cb no longer returns number of requests.
158
1592.62 Sat Apr 26 13:59:33 CEST 2008
160 - port to solaris perls configured for old posix
161 (analysed by Jost Krieger).
162 - keep a reference to the perl filehandle object in aio_close,
163 so it doesn't get closed prematurely, leading to ugly races.
164
1652.61 Wed Apr 16 18:45:02 CEST 2008
166 - fix treescan output duplication and improve output ordering.
167 also display files given on the commandline.
168 - use a different algorithm for aio_close that is faster
169 and probably has even lower chances of blocking.
170 - do our own stack memory management for threads - linux
171 allocates outrageous amounts of VM (not so bad unless you
172 use mlockall...), which severely limits the number of threads
173 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
174 and 4096 * sizeof (long) (usually this is 16..64k).
175
1762.6 Sun Mar 30 08:28:11 CEST 2008
177 - added aio_sync.
178 - added aio_pathsync.
179 - fix prototypes of (void) functions.
180
1812.51 Sat Oct 6 16:04:54 CEST 2007
182 - perlio isn't generally threadsafe, so aio_close could not work reliably.
183 aio_close now tries a safe hack that might not be that asynchronous
184 (see the manpage for details).
185 - discard callback return values as to not grow the stack endlessly
186 when poll_cb handles many requests without returning.
187 - minor code cleanups.
188
1892.5 Thu Oct 4 14:49:08 CEST 2007
190 - replaced _fd2fh with faster xs code.
191 - aio_close will now try to do "the right thing" and thus might
192 work sensibly for the very first time.
193
1942.41 Mon Sep 24 21:28:21 CEST 2007
195 - after fork, invest some work to make sure that the poll_fileno
196 stays stable (by dup2'ing the new fd over the old one), to make
197 it easier for programs/libs that don't control their forking
198 behaviour and cannot recreate their watchers.
199
2002.4 Sun Aug 5 18:44:22 CEST 2007
201 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
12 that you can block on futimes...). 202 successfully demonstrated that you can block on futimes...).
13 - allow undef as fileoffset for aio_read/write and use read/write(2) 203 - allow undef as fileoffset for aio_read/write and use read/write(2)
14 internally (useful for sockets or O_APPEND handles). 204 internally (useful for sockets or O_APPEND handles).
15 - allow undef for length in aio_write. 205 - allow undef for length in aio_write.
16 - negative dataoffsets work as expected now in aio_read/aio_write. 206 - negative dataoffsets work as expected now in aio_read/aio_write.
17 - use NV instead of UV for 32 bit perls and file offsets, as NVs 207 - use NV instead of UV for 32 bit perls and file offsets, as NVs
18 have a larger range then. 208 have a larger range then.
19 - shared code between BDB and IO::AIO. 209 - shared code between BDB and IO::AIO.
210 - aio_busy was completely broken. now fixed.
211 - readahead emulation now returns something.
20 - correctly set errno to ENOSYS on unimplemented functions 212 - correctly set errno to ENOSYS on unimplemented functions
21 (should never happen, though). 213 (should never happen, though).
214 - large changes to make it partially compile and run on win32,
215 but win32 lacks too much functionality, and perl overrides way
216 too many functions with crashing versions.
22 217
232.33 Tue Jan 23 23:55:41 CET 2007 2182.33 Tue Jan 23 23:55:41 CET 2007
24 - fix install path (Andreas J. Koenig). 219 - fix install path (Andreas J. Koenig).
25 220
262.32 Mon Jan 22 16:56:23 CET 2007 2212.32 Mon Jan 22 16:56:23 CET 2007

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