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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 1.214 by root, Thu Jan 7 17:18:08 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/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
8TODO: fallocate, if it wouldn't be so useless.
9TODO: IO::AIO::mmap? aio_mincore?
7 10
11 - (liebio) fix freebsd sendfile (Vanilla Hsu).
12 - (libeio) also fix darwin sendfile that suffered from a similar bug.
13
143.4 Sat Jan 2 15:13:04 CET 2010
15 - (libeio) max_poll_time was not properly converted to ticks.
16 - clarify cancel_subs description.
17 - IO::AIO::sendfile did not actually return the return value
18 from the sendfile call.
19 - implement aio_msync, aio_mtouch.
20 - (libeio) tentatively support darwin in sendfile.
21
223.31 Thu Nov 12 02:14:29 CET 2009
23 - fix result status documentation of aio_copy, aio_move.
24 - speed up object creation considerably by avoiding
25 hash lookups.
26
273.3 Wed Aug 5 13:52:58 CEST 2009
28 - use common::sense.
29 - use common schmorp.h header.
30 - allow integers (file descriptors) in addition to file handles.
31 - take advantage of linux' eventfd (but it seems slower on smp?).
32 - use poll not select on posix platforms.
33
343.261 Wed Jul 1 10:11:51 CEST 2009
35 - more 0S X workarounds (patch by Tokuhiro Matsuno).
36
373.26 Tue Jun 30 09:33:26 CEST 2009
38 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
39 try to work around this horribly broken OS in a somewhat hackish
40 way. might help other os's too.
41
423.25 Sat Jun 27 05:18:26 CEST 2009
43 - added IO::AIO::fadvise and IO::AIO::sendfile.
44 - (libeio) replaced quicksort+insertion sort by a tuned radix
45 sort + insertion sort, resulting in comparable runtime (usually
46 faster) to the old version, but without any ill side effects on
47 degenerated (for quicksort) data.
48 - (libeio) correctly sort dirs by inodes if we have perfect type
49 knowledge and DIRS_FIRST is used.
50 - (libeio) internally the wrong DT_* constants were used, but no
51 known system has differing EIO_DT_*/DT_* values, so not an issue.
52 - removed a (harmless) assert that was left over on the code
53 but should not have been.
54 - use more correct types (change IO length from IV to VAL64,
55 which makes a difference on systems without 64 bit perls).
56
573.23 Sat Jun 13 16:57:58 CEST 2009
58 - fix off-by-one bug in aio_readdir that was introduced in the
59 rushed 3.22 release.
60
613.22 Sat Jun 13 15:32:40 CEST 2009
62 - speed up readdirx sort algorithm slightly.
63 - bin/treescan was missing from distro tarball.
64
653.21 Fri Jun 12 18:45:53 CEST 2009
66 - new options --dirs and --files for treescan.
67 - install bin/treescan by default.
68 - (libeio) aio_readdir can now be cancelled while executing.
69 - fix a printf format string for 64 bit systems (could lead
70 to problems on big endian 64 bit systems).
71 - do not use qsort() but our own algorithm: glibc initialises
72 the whole locale and I/O subsystem inside qsort, causing
73 a stack overflow on 32 bit machines. The new sort uses much less
74 stack and is more than twice as fast in typical situations.
75
763.2 Sun Jun 7 20:30:05 CEST 2009
77 - (libeio) pwrite emulation was even more flawed than intended and did
78 not restore the file offset.
79 - add aio_readdirx, which can return inode and filetype and sort
80 the names in various ways.
81 - unfortunately, utime, chmod, chown on an open file that has just
82 been written can easily block, which caused aio_copy to block the
83 process. no more!
84 - no longer rely on dst path in aio_copy when futime is available.
85
863.19 Tue Apr 21 22:05:21 CEST 2009
87 - more perl 5.10 workarounds for aio_read and write.
88 - aio_write no longer modifies the sv (if possible).
89 - aio_read now works correctly with magic values.
90
913.18 Sun Apr 19 21:17:32 CEST 2009
92 - better diagnostics when some aio_* functions get passed an illegal fh.
93 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
94
953.17 Thu Nov 20 08:45:36 CET 2008
96 - (libeio) added aio_sync_file_range (untested).
97 - add aio_busy to @IO::AIO::AIO_REQ.
98
993.16 Wed Oct 22 18:28:01 CEST 2008
100 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
101 part to improve portability to perl 5.8 (reported by szymon).
102
1033.15 Mon Oct 13 00:39:55 CEST 2008
104 - automatic removal of feeders was broken.
105 - (libeio) use a more robust method to detect whether a feeder
106 has added something to the group or not.
107
1083.1 Thu Oct 2 13:34:40 CEST 2008
109 - pre-deref the passed callback object, for increased speed
110 and decreased memory usage.
111 - call on_next_submit callback even for aio_group - impact unknown,
112 but seems more correct.
113 - $req->cb now returns the original callback.
114 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
115 requiring a thread switch.
116 - (libeio) status code of aio_futime and aio_utime was always passed 0.
117 - do some other ยต-optimisations.
118
1193.07 Sat Aug 2 16:06:13 CEST 2008
120 - do not include LIBS in autoconf tests.
121
1223.06 Tue Jul 15 12:41:32 CEST 2008
123 - move preadwritelock definition before it's first reference,
124 to make it compile again on broken platforms (they still exist)
125 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
126
1273.05 Thu Jun 19 23:23:52 CEST 2008
128 - work around perl overriding readdir etc. with thread-unsafe
129 (sic!) versions.
130
1313.04 Wed Jun 18 01:35:38 CEST 2008
132 - (libeio) fix eio_mknod, which confused it's arguments.
133 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
134 is stupid.
135 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
136 - (libeio) fix a bug that could potentially cause IO::AIO
137 not to get initialised properly.
138
1393.03 Thu May 29 05:33:30 CEST 2008
140 - (libeio) correctly call pthread_attr_destroy ().
141 - (libeio) work around broken bsd headers once more.
142 - reduce shared library size again by not including wrappers.
143 - max_outstanding could cause poll to enter a busy-waiting loop.
144 - document the new IO::AIO::poll_cb result value.
145
1463.02 Mon May 12 02:32:02 CEST 2008
147 - fix a memory leak on aio_readlink.
148 - bring back working fchmod.
149 - nop and busy now set result to 0.
150 - set errno to ENOMEM when allocation fails.
151
1523.01 Sun May 11 03:07:03 CEST 2008
153 - (libeio) make it compile on systems without readahead or readdir_r.
154 - (libeio) improve configure check for readahead availability.
155 - do not try to link against -lrt.
156 - use a separate configure script for IO::AIO (not the libeio one).
157
1583.0 Sun May 11 00:57:14 CEST 2008
159 - added bin/treescan to the distribution.
160 - switched to using libeio.
161 - LOTS OF INCOMPATIBLE CHANGES:
162 - remove signal functionality, it is not worth the effort.
163 - max_outstanding no longer returns the previous number of requests.
164 - poll_cb no longer returns number of requests.
165
1662.62 Sat Apr 26 13:59:33 CEST 2008
167 - port to solaris perls configured for old posix
168 (analysed by Jost Krieger).
169 - keep a reference to the perl filehandle object in aio_close,
170 so it doesn't get closed prematurely, leading to ugly races.
171
1722.61 Wed Apr 16 18:45:02 CEST 2008
173 - fix treescan output duplication and improve output ordering.
174 also display files given on the commandline.
175 - use a different algorithm for aio_close that is faster
176 and probably has even lower chances of blocking.
177 - do our own stack memory management for threads - linux
178 allocates outrageous amounts of VM (not so bad unless you
179 use mlockall...), which severely limits the number of threads
180 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
181 and 4096 * sizeof (long) (usually this is 16..64k).
182
1832.6 Sun Mar 30 08:28:11 CEST 2008
184 - added aio_sync.
185 - added aio_pathsync.
186 - fix prototypes of (void) functions.
187
1882.51 Sat Oct 6 16:04:54 CEST 2007
189 - perlio isn't generally threadsafe, so aio_close could not work reliably.
190 aio_close now tries a safe hack that might not be that asynchronous
191 (see the manpage for details).
192 - discard callback return values as to not grow the stack endlessly
193 when poll_cb handles many requests without returning.
194 - minor code cleanups.
195
1962.5 Thu Oct 4 14:49:08 CEST 2007
197 - replaced _fd2fh with faster xs code.
198 - aio_close will now try to do "the right thing" and thus might
199 work sensibly for the very first time.
200
2012.41 Mon Sep 24 21:28:21 CEST 2007
202 - after fork, invest some work to make sure that the poll_fileno
203 stays stable (by dup2'ing the new fd over the old one), to make
204 it easier for programs/libs that don't control their forking
205 behaviour and cannot recreate their watchers.
206
2072.4 Sun Aug 5 18:44:22 CEST 2007
208 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
209 successfully demonstrated that you can block on futimes...).
210 - allow undef as fileoffset for aio_read/write and use read/write(2)
211 internally (useful for sockets or O_APPEND handles).
212 - allow undef for length in aio_write.
213 - negative dataoffsets work as expected now in aio_read/aio_write.
214 - use NV instead of UV for 32 bit perls and file offsets, as NVs
215 have a larger range then.
216 - shared code between BDB and IO::AIO.
217 - aio_busy was completely broken. now fixed.
218 - readahead emulation now returns something.
219 - correctly set errno to ENOSYS on unimplemented functions
220 (should never happen, though).
221 - large changes to make it partially compile and run on win32,
222 but win32 lacks too much functionality, and perl overrides way
223 too many functions with crashing versions.
224
2252.33 Tue Jan 23 23:55:41 CET 2007
226 - fix install path (Andreas J. Koenig).
227
2282.32 Mon Jan 22 16:56:23 CET 2007
229 - added aio_rmtree.
230 - wow, aio_mkdir was missing.
231 - aio_load did return undef on error, not -1.
232 - use prefixexp not prefix in autoconf.pm
233 (suggested by ... rt.cpan.org unreachable).
234 - avoid installing autoconf.pm.
235
2362.31 Sat Jan 6 03:46:02 CET 2007
237 - added aio_load.
238
2392.3 Sat Dec 23 05:48:07 CET 2006
240 - fix off-by-one bug in aio_read, causing memory corruption
241 or crashes.
242
2432.21 Fri Dec 22 05:03:38 CET 2006
244 - minor doc updates.
8 - minor cleanups. 245 - minor cleanups.
9 - IO::AIO::poll returns request count. 246 - IO::AIO::poll returns request count.
247 - undocumented and unfinished async-signal-reporting.
10 248
112.2 Tue Oct 31 00:31:00 CET 2006 2492.2 Tue Oct 31 00:31:00 CET 2006
12 - minor doc updates. 250 - minor doc updates.
13 - added aio_readlink. 251 - added aio_readlink.
14 - properly zero-terminate aio_read buffer. 252 - properly zero-terminate aio_read buffer.

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