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Comparing IO-AIO/Changes (file contents):
Revision 1.107 by root, Wed Nov 8 01:57:43 2006 UTC vs.
Revision 1.195 by root, Mon Jun 15 05:34:49 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/rmtree 4TODO: aio_cptree/mvtree
5TODO: aio_utime, aio_chmod, aio_chown? should simply stat/open first?
6TODO: reduce condvar fairness: schedule hot-cache-threads first? 5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: splice/tee/vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
7 8
9 - (libeio) replaced quicksort+insertion sort by a tuned radix
10 sort + insertion sort, resulting in comparable runtime (usually
11 faster) to the old version, but without any ill side effects on
12 degenerated (for quicksort) data.
13 - (libeio) correctly sort dirs by inodes if we have perfect type
14 knowledge and DIRS_FIRST is used.
15 - (libeio) internally the wrong DT_* constants were used, but no
16 known system has differing EIO_DT_*/DT_* values, so not an issue.
17 - removed a (harmless) assert that was left over on the code
18 but should not have been.
19
203.23 Sat Jun 13 16:57:58 CEST 2009
21 - fix off-by-one bug in aio_readdir that was introduced in the
22 rushed 3.22 release.
23
243.22 Sat Jun 13 15:32:40 CEST 2009
25 - speed up readdirx sort algorithm slightly.
26 - bin/treescan was missing from distro tarball.
27
283.21 Fri Jun 12 18:45:53 CEST 2009
29 - new options --dirs and --files for treescan.
30 - install bin/treescan by default.
31 - (libeio) aio_readdir can now be cancelled while executing.
32 - fix a printf format string for 64 bit systems (could lead
33 to problems on big endian 64 bit systems).
34 - do not use qsort() but our own algorithm: glibc initialises
35 the whole locale and I/O subsystem inside qsort, causing
36 a stack overflow on 32 bit machines. The new sort uses much less
37 stack and is more than twice as fast in typical situations.
38
393.2 Sun Jun 7 20:30:05 CEST 2009
40 - (libeio) pwrite emulation was even more flawed than intended and did
41 not restore the file offset.
42 - add aio_readdirx, which can return inode and filetype and sort
43 the names in various ways.
44 - unfortunately, utime, chmod, chown on an open file that has just
45 been written can easily block, which caused aio_copy to block the
46 process. no more!
47 - no longer rely on dst path in aio_copy when futime is available.
48
493.19 Tue Apr 21 22:05:21 CEST 2009
50 - more perl 5.10 workarounds for aio_read and write.
51 - aio_write no longer modifies the sv (if possible).
52 - aio_read now works correctly with magic values.
53
543.18 Sun Apr 19 21:17:32 CEST 2009
55 - better diagnostics when some aio_* functions get passed an illegal fh.
56 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
57
583.17 Thu Nov 20 08:45:36 CET 2008
59 - (libeio) added aio_sync_file_range (untested).
60 - add aio_busy to @IO::AIO::AIO_REQ.
61
623.16 Wed Oct 22 18:28:01 CEST 2008
63 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
64 part to improve portability to perl 5.8 (reported by szymon).
65
663.15 Mon Oct 13 00:39:55 CEST 2008
67 - automatic removal of feeders was broken.
68 - (libeio) use a more robust method to detect whether a feeder
69 has added something to the group or not.
70
713.1 Thu Oct 2 13:34:40 CEST 2008
72 - pre-deref the passed callback object, for increased speed
73 and decreased memory usage.
74 - call on_next_submit callback even for aio_group - impact unknown,
75 but seems more correct.
76 - $req->cb now returns the original callback.
77 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
78 requiring a thread switch.
79 - (libeio) status code of aio_futime and aio_utime was always passed 0.
80 - do some other ยต-optimisations.
81
823.07 Sat Aug 2 16:06:13 CEST 2008
83 - do not include LIBS in autoconf tests.
84
853.06 Tue Jul 15 12:41:32 CEST 2008
86 - move preadwritelock definition before it's first reference,
87 to make it compile again on broken platforms (they still exist)
88 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
89
903.05 Thu Jun 19 23:23:52 CEST 2008
91 - work around perl overriding readdir etc. with thread-unsafe
92 (sic!) versions.
93
943.04 Wed Jun 18 01:35:38 CEST 2008
95 - (libeio) fix eio_mknod, which confused it's arguments.
96 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
97 is stupid.
98 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
99 - (libeio) fix a bug that could potentially cause IO::AIO
100 not to get initialised properly.
101
1023.03 Thu May 29 05:33:30 CEST 2008
103 - (libeio) correctly call pthread_attr_destroy ().
104 - (libeio) work around broken bsd headers once more.
105 - reduce shared library size again by not including wrappers.
106 - max_outstanding could cause poll to enter a busy-waiting loop.
107 - document the new IO::AIO::poll_cb result value.
108
1093.02 Mon May 12 02:32:02 CEST 2008
110 - fix a memory leak on aio_readlink.
111 - bring back working fchmod.
112 - nop and busy now set result to 0.
113 - set errno to ENOMEM when allocation fails.
114
1153.01 Sun May 11 03:07:03 CEST 2008
116 - (libeio) make it compile on systems without readahead or readdir_r.
117 - (libeio) improve configure check for readahead availability.
118 - do not try to link against -lrt.
119 - use a separate configure script for IO::AIO (not the libeio one).
120
1213.0 Sun May 11 00:57:14 CEST 2008
122 - added bin/treescan to the distribution.
123 - switched to using libeio.
124 - LOTS OF INCOMPATIBLE CHANGES:
125 - remove signal functionality, it is not worth the effort.
126 - max_outstanding no longer returns the previous number of requests.
127 - poll_cb no longer returns number of requests.
128
1292.62 Sat Apr 26 13:59:33 CEST 2008
130 - port to solaris perls configured for old posix
131 (analysed by Jost Krieger).
132 - keep a reference to the perl filehandle object in aio_close,
133 so it doesn't get closed prematurely, leading to ugly races.
134
1352.61 Wed Apr 16 18:45:02 CEST 2008
136 - fix treescan output duplication and improve output ordering.
137 also display files given on the commandline.
138 - use a different algorithm for aio_close that is faster
139 and probably has even lower chances of blocking.
140 - do our own stack memory management for threads - linux
141 allocates outrageous amounts of VM (not so bad unless you
142 use mlockall...), which severely limits the number of threads
143 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
144 and 4096 * sizeof (long) (usually this is 16..64k).
145
1462.6 Sun Mar 30 08:28:11 CEST 2008
147 - added aio_sync.
148 - added aio_pathsync.
149 - fix prototypes of (void) functions.
150
1512.51 Sat Oct 6 16:04:54 CEST 2007
152 - perlio isn't generally threadsafe, so aio_close could not work reliably.
153 aio_close now tries a safe hack that might not be that asynchronous
154 (see the manpage for details).
155 - discard callback return values as to not grow the stack endlessly
156 when poll_cb handles many requests without returning.
157 - minor code cleanups.
158
1592.5 Thu Oct 4 14:49:08 CEST 2007
160 - replaced _fd2fh with faster xs code.
161 - aio_close will now try to do "the right thing" and thus might
162 work sensibly for the very first time.
163
1642.41 Mon Sep 24 21:28:21 CEST 2007
165 - after fork, invest some work to make sure that the poll_fileno
166 stays stable (by dup2'ing the new fd over the old one), to make
167 it easier for programs/libs that don't control their forking
168 behaviour and cannot recreate their watchers.
169
1702.4 Sun Aug 5 18:44:22 CEST 2007
171 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
172 successfully demonstrated that you can block on futimes...).
173 - allow undef as fileoffset for aio_read/write and use read/write(2)
174 internally (useful for sockets or O_APPEND handles).
175 - allow undef for length in aio_write.
176 - negative dataoffsets work as expected now in aio_read/aio_write.
177 - use NV instead of UV for 32 bit perls and file offsets, as NVs
178 have a larger range then.
179 - shared code between BDB and IO::AIO.
180 - aio_busy was completely broken. now fixed.
181 - readahead emulation now returns something.
182 - correctly set errno to ENOSYS on unimplemented functions
183 (should never happen, though).
184 - large changes to make it partially compile and run on win32,
185 but win32 lacks too much functionality, and perl overrides way
186 too many functions with crashing versions.
187
1882.33 Tue Jan 23 23:55:41 CET 2007
189 - fix install path (Andreas J. Koenig).
190
1912.32 Mon Jan 22 16:56:23 CET 2007
192 - added aio_rmtree.
193 - wow, aio_mkdir was missing.
194 - aio_load did return undef on error, not -1.
195 - use prefixexp not prefix in autoconf.pm
196 (suggested by ... rt.cpan.org unreachable).
197 - avoid installing autoconf.pm.
198
1992.31 Sat Jan 6 03:46:02 CET 2007
200 - added aio_load.
201
2022.3 Sat Dec 23 05:48:07 CET 2006
203 - fix off-by-one bug in aio_read, causing memory corruption
204 or crashes.
205
2062.21 Fri Dec 22 05:03:38 CET 2006
207 - minor doc updates.
8 - minor cleanups. 208 - minor cleanups.
9 - IO::AIO::poll returns request count. 209 - IO::AIO::poll returns request count.
210 - undocumented and unfinished async-signal-reporting.
10 211
112.2 Tue Oct 31 00:31:00 CET 2006 2122.2 Tue Oct 31 00:31:00 CET 2006
12 - minor doc updates. 213 - minor doc updates.
13 - added aio_readlink. 214 - added aio_readlink.
14 - properly zero-terminate aio_read buffer. 215 - properly zero-terminate aio_read buffer.

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