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Comparing IO-AIO/Changes (file contents):
Revision 1.64 by root, Mon Feb 6 23:55:48 2006 UTC vs.
Revision 1.183 by root, Sat Jun 6 18:06:55 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
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
4 8
51.73 9 - (libeio) pwrite emulation was even more flawed than intended and did
6 - AIX isn't being helpful again, hardcode a value for NAME_MAX 10 not restore the file offset.
11 - add aio_readdirx, which can return inode and filetype and sort
12 the names in various ways.
13 - unfortunately, utime, chmod, chown on an open file that has just
14 been written can easily block, which caused aio_copy to block the
15 process. no more!
16 - no longer rely on dst path in aio_copy when futime is available.
17
183.19 Tue Apr 21 22:05:21 CEST 2009
19 - more perl 5.10 workarounds for aio_read and write.
20 - aio_write no longer modifies the sv (if possible).
21 - aio_read now works correctly with magic values.
22
233.18 Sun Apr 19 21:17:32 CEST 2009
24 - better diagnostics when some aio_* functions get passed an illegal fh.
25 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
26
273.17 Thu Nov 20 08:45:36 CET 2008
28 - (libeio) added aio_sync_file_range (untested).
29 - add aio_busy to @IO::AIO::AIO_REQ.
30
313.16 Wed Oct 22 18:28:01 CEST 2008
32 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
33 part to improve portability to perl 5.8 (reported by szymon).
34
353.15 Mon Oct 13 00:39:55 CEST 2008
36 - automatic removal of feeders was broken.
37 - (libeio) use a more robust method to detect whether a feeder
38 has added something to the group or not.
39
403.1 Thu Oct 2 13:34:40 CEST 2008
41 - pre-deref the passed callback object, for increased speed
42 and decreased memory usage.
43 - call on_next_submit callback even for aio_group - impact unknown,
44 but seems more correct.
45 - $req->cb now returns the original callback.
46 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
47 requiring a thread switch.
48 - (libeio) status code of aio_futime and aio_utime was always passed 0.
49 - do some other ยต-optimisations.
50
513.07 Sat Aug 2 16:06:13 CEST 2008
52 - do not include LIBS in autoconf tests.
53
543.06 Tue Jul 15 12:41:32 CEST 2008
55 - move preadwritelock definition before it's first reference,
56 to make it compile again on broken platforms (they still exist)
57 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
58
593.05 Thu Jun 19 23:23:52 CEST 2008
60 - work around perl overriding readdir etc. with thread-unsafe
61 (sic!) versions.
62
633.04 Wed Jun 18 01:35:38 CEST 2008
64 - (libeio) fix eio_mknod, which confused it's arguments.
65 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
66 is stupid.
67 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
68 - (libeio) fix a bug that could potentially cause IO::AIO
69 not to get initialised properly.
70
713.03 Thu May 29 05:33:30 CEST 2008
72 - (libeio) correctly call pthread_attr_destroy ().
73 - (libeio) work around broken bsd headers once more.
74 - reduce shared library size again by not including wrappers.
75 - max_outstanding could cause poll to enter a busy-waiting loop.
76 - document the new IO::AIO::poll_cb result value.
77
783.02 Mon May 12 02:32:02 CEST 2008
79 - fix a memory leak on aio_readlink.
80 - bring back working fchmod.
81 - nop and busy now set result to 0.
82 - set errno to ENOMEM when allocation fails.
83
843.01 Sun May 11 03:07:03 CEST 2008
85 - (libeio) make it compile on systems without readahead or readdir_r.
86 - (libeio) improve configure check for readahead availability.
87 - do not try to link against -lrt.
88 - use a separate configure script for IO::AIO (not the libeio one).
89
903.0 Sun May 11 00:57:14 CEST 2008
91 - added bin/treescan to the distribution.
92 - switched to using libeio.
93 - LOTS OF INCOMPATIBLE CHANGES:
94 - remove signal functionality, it is not worth the effort.
95 - max_outstanding no longer returns the previous number of requests.
96 - poll_cb no longer returns number of requests.
97
982.62 Sat Apr 26 13:59:33 CEST 2008
99 - port to solaris perls configured for old posix
100 (analysed by Jost Krieger).
101 - keep a reference to the perl filehandle object in aio_close,
102 so it doesn't get closed prematurely, leading to ugly races.
103
1042.61 Wed Apr 16 18:45:02 CEST 2008
105 - fix treescan output duplication and improve output ordering.
106 also display files given on the commandline.
107 - use a different algorithm for aio_close that is faster
108 and probably has even lower chances of blocking.
109 - do our own stack memory management for threads - linux
110 allocates outrageous amounts of VM (not so bad unless you
111 use mlockall...), which severely limits the number of threads
112 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
113 and 4096 * sizeof (long) (usually this is 16..64k).
114
1152.6 Sun Mar 30 08:28:11 CEST 2008
116 - added aio_sync.
117 - added aio_pathsync.
118 - fix prototypes of (void) functions.
119
1202.51 Sat Oct 6 16:04:54 CEST 2007
121 - perlio isn't generally threadsafe, so aio_close could not work reliably.
122 aio_close now tries a safe hack that might not be that asynchronous
123 (see the manpage for details).
124 - discard callback return values as to not grow the stack endlessly
125 when poll_cb handles many requests without returning.
126 - minor code cleanups.
127
1282.5 Thu Oct 4 14:49:08 CEST 2007
129 - replaced _fd2fh with faster xs code.
130 - aio_close will now try to do "the right thing" and thus might
131 work sensibly for the very first time.
132
1332.41 Mon Sep 24 21:28:21 CEST 2007
134 - after fork, invest some work to make sure that the poll_fileno
135 stays stable (by dup2'ing the new fd over the old one), to make
136 it easier for programs/libs that don't control their forking
137 behaviour and cannot recreate their watchers.
138
1392.4 Sun Aug 5 18:44:22 CEST 2007
140 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
141 successfully demonstrated that you can block on futimes...).
142 - allow undef as fileoffset for aio_read/write and use read/write(2)
143 internally (useful for sockets or O_APPEND handles).
144 - allow undef for length in aio_write.
145 - negative dataoffsets work as expected now in aio_read/aio_write.
146 - use NV instead of UV for 32 bit perls and file offsets, as NVs
147 have a larger range then.
148 - shared code between BDB and IO::AIO.
149 - aio_busy was completely broken. now fixed.
150 - readahead emulation now returns something.
151 - correctly set errno to ENOSYS on unimplemented functions
152 (should never happen, though).
153 - large changes to make it partially compile and run on win32,
154 but win32 lacks too much functionality, and perl overrides way
155 too many functions with crashing versions.
156
1572.33 Tue Jan 23 23:55:41 CET 2007
158 - fix install path (Andreas J. Koenig).
159
1602.32 Mon Jan 22 16:56:23 CET 2007
161 - added aio_rmtree.
162 - wow, aio_mkdir was missing.
163 - aio_load did return undef on error, not -1.
164 - use prefixexp not prefix in autoconf.pm
165 (suggested by ... rt.cpan.org unreachable).
166 - avoid installing autoconf.pm.
167
1682.31 Sat Jan 6 03:46:02 CET 2007
169 - added aio_load.
170
1712.3 Sat Dec 23 05:48:07 CET 2006
172 - fix off-by-one bug in aio_read, causing memory corruption
173 or crashes.
174
1752.21 Fri Dec 22 05:03:38 CET 2006
176 - minor doc updates.
177 - minor cleanups.
178 - IO::AIO::poll returns request count.
179 - undocumented and unfinished async-signal-reporting.
180
1812.2 Tue Oct 31 00:31:00 CET 2006
182 - minor doc updates.
183 - added aio_readlink.
184 - properly zero-terminate aio_read buffer.
185 - fix aio_read/write with nonzero dataoffset.
186 - reduced size of aio request structure.
187 - better diagnostics when pathnames etc. are not byte-encoded;
188 do not leak request in that case, either.
189
1902.1 Sun Oct 29 02:01:57 CET 2006
191 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
192 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
193 - fix a bug in aio_move where it would fail everytime
194 it would have to copy files manually.
195 - doc updates.
196 - start threads only on (very low) demand.
197 - end superfluous threads automatically after 10s idling.
198 - add IO::AIO::max_idle to control this.
199 - some tuning applied to random places.
200 - add aio_mknod.
201
2022.0 Thu Oct 26 18:27:58 CEST 2006
203 - minor incompatibility: max_outstanding semantics have changed.
204 - major rewrite, consider all functionality EXPERIMENTAL.
205 - aio requests can be cancelled.
206 - callbacks can be (re-)set later.
207 - aio requests can choose between 9 priorities.
208 - add aio_group: aio requests can be grouped
209 into composite requests.
210 - generator interface for groups.
211 - add IO::AIO::poll_some.
212 - major documentation improvements.
213 - very minor bugfixes.
214 - add aio_nop for dummy requests.
215 - add aio_busy mainly for benchmarking and debugging.
216 - use "fast" mutexes on linux.
217 - use dynamic (and larger) buffers instead of
218 putting them onto the stack.
219 - optimise x86 and amd64 a bit.
220 - better error checking when ENOMEM.
221 - hopefully fix mem and dirp leaks on fork.
222 - warn about broken perl malloc.
223 - compiles on cygwin (but pread is broken on cygwin
224 which is not detected by autoconf, so you have to
225 edit autoconf/config.h yourself to enable emulation).
226
2271.8 Sat Jun 24 22:20:44 CEST 2006
228 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
229
2301.73 Wed Mar 1 22:49:32 CET 2006
231 - codename "jost"
232 - AIX/Solaris(?) aren't being helpful again, hardcode a value
7 and drive with your eyes closed (reported by wcooley@nakedape.cc). 233 for NAME_MAX and drive with your eyes closed (reported by
234 wcooley@nakedape.cc).
8 235
91.72 Thu Feb 2 00:40:44 CET 2006 2361.72 Thu Feb 2 00:40:44 CET 2006
10 - another minor bug in aio_scandir, again, the callback was called 237 - another minor bug in aio_scandir, again, the callback was called
11 twice when the directory can't be stat'ed. 238 twice when the directory can't be stat'ed.
12 239
… …
37 - somebody nagged about C89 compatibility, so this release should 264 - somebody nagged about C89 compatibility, so this release should
38 be C89 compatible, but no guarantees for future ones. 265 be C89 compatible, but no guarantees for future ones.
39 - abort when the configure script fails. 266 - abort when the configure script fails.
40 267
411.4 Wed Aug 17 08:07:27 CEST 2005 2681.4 Wed Aug 17 08:07:27 CEST 2005
42 - forget to recreate the pipe after forking, this could cause 269 - forgot to recreate the pipe after forking, this could cause
43 deadlocks. 270 deadlocks.
44 271
451.3 Wed Aug 17 07:25:54 CEST 2005 2721.3 Wed Aug 17 07:25:54 CEST 2005
46 - properly propagate exceptions from callbacks, instead of silently 273 - properly propagate exceptions from callbacks, instead of silently
47 eating them. 274 eating them.

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