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Comparing IO-AIO/Changes (file contents):
Revision 1.20 by root, Sun Jul 31 18:14:48 2005 UTC vs.
Revision 1.161 by root, Thu Jun 19 21:25:30 2008 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
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/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
8
93.05 Thu Jun 19 23:23:52 CEST 2008
10 - work around perl overriding readdir etc. with thread-unsafe
11 (sic!) versions.
12
133.04 Wed Jun 18 01:35:38 CEST 2008
14 - (libeio) fix eio_mknod, which confused it's arguments.
15 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
16 is stupid.
17 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
18 - (libeio) fix a bug that could potentially cause IO::AIO
19 not to get initialised properly.
20
213.03 Thu May 29 05:33:30 CEST 2008
22 - (libeio) correctly call pthread_attr_destroy ().
23 - (libeio) work around broken bsd headers once more.
24 - reduce shared library size again by not including wrappers.
25 - max_outstanding could cause poll to enter a busy-waiting loop.
26 - document the new IO::AIO::poll_cb result value.
27
283.02 Mon May 12 02:32:02 CEST 2008
29 - fix a memory leak on aio_readlink.
30 - bring back working fchmod.
31 - nop and busy now set result to 0.
32 - set errno to ENOMEM when allocation fails.
33
343.01 Sun May 11 03:07:03 CEST 2008
35 - (libeio) make it compile on systems without readahead or readdir_r.
36 - (libeio) improve configure check for readahead availability.
37 - do not try to link against -lrt.
38 - use a separate configure script for IO::AIO (not the libeio one).
39
403.0 Sun May 11 00:57:14 CEST 2008
41 - added bin/treescan to the distribution.
42 - switched to using libeio.
43 - LOTS OF INCOMPATIBLE CHANGES:
44 - remove signal functionality, it is not worth the effort.
45 - max_outstanding no longer returns the previous number of requests.
46 - poll_cb no longer returns number of requests.
47
482.62 Sat Apr 26 13:59:33 CEST 2008
49 - port to solaris perls configured for old posix
50 (analysed by Jost Krieger).
51 - keep a reference to the perl filehandle object in aio_close,
52 so it doesn't get closed prematurely, leading to ugly races.
53
542.61 Wed Apr 16 18:45:02 CEST 2008
55 - fix treescan output duplication and improve output ordering.
56 also display files given on the commandline.
57 - use a different algorithm for aio_close that is faster
58 and probably has even lower chances of blocking.
59 - do our own stack memory management for threads - linux
60 allocates outrageous amounts of VM (not so bad unless you
61 use mlockall...), which severely limits the number of threads
62 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
63 and 4096 * sizeof (long) (usually this is 16..64k).
64
652.6 Sun Mar 30 08:28:11 CEST 2008
66 - added aio_sync.
67 - added aio_pathsync.
68 - fix prototypes of (void) functions.
69
702.51 Sat Oct 6 16:04:54 CEST 2007
71 - perlio isn't generally threadsafe, so aio_close could not work reliably.
72 aio_close now tries a safe hack that might not be that asynchronous
73 (see the manpage for details).
74 - discard callback return values as to not grow the stack endlessly
75 when poll_cb handles many requests without returning.
76 - minor code cleanups.
77
782.5 Thu Oct 4 14:49:08 CEST 2007
79 - replaced _fd2fh with faster xs code.
80 - aio_close will now try to do "the right thing" and thus might
81 work sensibly for the very first time.
82
832.41 Mon Sep 24 21:28:21 CEST 2007
84 - after fork, invest some work to make sure that the poll_fileno
85 stays stable (by dup2'ing the new fd over the old one), to make
86 it easier for programs/libs that don't control their forking
87 behaviour and cannot recreate their watchers.
88
892.4 Sun Aug 5 18:44:22 CEST 2007
90 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
91 successfully demonstrated that you can block on futimes...).
92 - allow undef as fileoffset for aio_read/write and use read/write(2)
93 internally (useful for sockets or O_APPEND handles).
94 - allow undef for length in aio_write.
95 - negative dataoffsets work as expected now in aio_read/aio_write.
96 - use NV instead of UV for 32 bit perls and file offsets, as NVs
97 have a larger range then.
98 - shared code between BDB and IO::AIO.
99 - aio_busy was completely broken. now fixed.
100 - readahead emulation now returns something.
101 - correctly set errno to ENOSYS on unimplemented functions
102 (should never happen, though).
103 - large changes to make it partially compile and run on win32,
104 but win32 lacks too much functionality, and perl overrides way
105 too many functions with crashing versions.
106
1072.33 Tue Jan 23 23:55:41 CET 2007
108 - fix install path (Andreas J. Koenig).
109
1102.32 Mon Jan 22 16:56:23 CET 2007
111 - added aio_rmtree.
112 - wow, aio_mkdir was missing.
113 - aio_load did return undef on error, not -1.
114 - use prefixexp not prefix in autoconf.pm
115 (suggested by ... rt.cpan.org unreachable).
116 - avoid installing autoconf.pm.
117
1182.31 Sat Jan 6 03:46:02 CET 2007
119 - added aio_load.
120
1212.3 Sat Dec 23 05:48:07 CET 2006
122 - fix off-by-one bug in aio_read, causing memory corruption
123 or crashes.
124
1252.21 Fri Dec 22 05:03:38 CET 2006
126 - minor doc updates.
127 - minor cleanups.
128 - IO::AIO::poll returns request count.
129 - undocumented and unfinished async-signal-reporting.
130
1312.2 Tue Oct 31 00:31:00 CET 2006
132 - minor doc updates.
133 - added aio_readlink.
134 - properly zero-terminate aio_read buffer.
135 - fix aio_read/write with nonzero dataoffset.
136 - reduced size of aio request structure.
137 - better diagnostics when pathnames etc. are not byte-encoded;
138 do not leak request in that case, either.
139
1402.1 Sun Oct 29 02:01:57 CET 2006
141 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
142 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
143 - fix a bug in aio_move where it would fail everytime
144 it would have to copy files manually.
145 - doc updates.
146 - start threads only on (very low) demand.
147 - end superfluous threads automatically after 10s idling.
148 - add IO::AIO::max_idle to control this.
149 - some tuning applied to random places.
150 - add aio_mknod.
151
1522.0 Thu Oct 26 18:27:58 CEST 2006
153 - minor incompatibility: max_outstanding semantics have changed.
154 - major rewrite, consider all functionality EXPERIMENTAL.
155 - aio requests can be cancelled.
156 - callbacks can be (re-)set later.
157 - aio requests can choose between 9 priorities.
158 - add aio_group: aio requests can be grouped
159 into composite requests.
160 - generator interface for groups.
161 - add IO::AIO::poll_some.
162 - major documentation improvements.
163 - very minor bugfixes.
164 - add aio_nop for dummy requests.
165 - add aio_busy mainly for benchmarking and debugging.
166 - use "fast" mutexes on linux.
167 - use dynamic (and larger) buffers instead of
168 putting them onto the stack.
169 - optimise x86 and amd64 a bit.
170 - better error checking when ENOMEM.
171 - hopefully fix mem and dirp leaks on fork.
172 - warn about broken perl malloc.
173 - compiles on cygwin (but pread is broken on cygwin
174 which is not detected by autoconf, so you have to
175 edit autoconf/config.h yourself to enable emulation).
176
1771.8 Sat Jun 24 22:20:44 CEST 2006
178 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
179
1801.73 Wed Mar 1 22:49:32 CET 2006
181 - codename "jost"
182 - AIX/Solaris(?) aren't being helpful again, hardcode a value
183 for NAME_MAX and drive with your eyes closed (reported by
184 wcooley@nakedape.cc).
185
1861.72 Thu Feb 2 00:40:44 CET 2006
187 - another minor bug in aio_scandir, again, the callback was called
188 twice when the directory can't be stat'ed.
189
1901.71 Mon Dec 26 20:20:03 CET 2005
191 - grr, another minor bug in aio_scandir, this time resulting
192 in a runtime error.
193
1941.7 Mon Dec 26 19:29:48 CET 2005
195 - aio_scandir errornously called callback twice in some cases.
196 - added AnyEvent example.
197
1981.61 Wed Sep 7 19:40:42 CEST 2005
199 - no longer include $Config{libs}, as distros include too much
200 garbage in there that is not installed on typical systems
201 (for example, debian links perl against -lgdbm and many more
202 libraries despite perl not needing it, slowing down startup and
203 wasting memory).
204
2051.6 Tue Aug 30 17:44:44 CEST 2005
206 - added aio_readdir, aio_scandir.
207 - added aio_sendfile, including sendfile emulation when sendfile
208 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
209 support is unavailable on my solaris 8 machine, but preliminary
210 code is there. What's lacking is configury stuff and testing...).
211
2121.5 Sat Aug 20 02:32:19 CEST 2005
213 - create the aio threads on demand only (good after forking).
214 - somebody nagged about C89 compatibility, so this release should
215 be C89 compatible, but no guarantees for future ones.
216 - abort when the configure script fails.
217
2181.4 Wed Aug 17 08:07:27 CEST 2005
219 - forgot to recreate the pipe after forking, this could cause
220 deadlocks.
221
2221.3 Wed Aug 17 07:25:54 CEST 2005
223 - properly propagate exceptions from callbacks, instead of silently
224 eating them.
225 - use a different fork algorithm that avoids recursive callback
226 invocations and reduces fork latency in busy processes.
227 - fix a bug where the buffer scalar in aio_read got assigned the wrong
228 length after reading.
229 - fix a bug where the child would process some outstanding requests
230 from the parent.
231 - make a copy of the callback scalar, to avoid some very uncommon
232 (but valid) usages where the callback scalar changes.
233 - the callback was never freed in aio_read/aio_write.
234 - aio_read/aio_write will now set the readonly flag on the data
235 scalar for better error reporting.
236
2371.2 Wed Aug 17 01:22:58 CEST 2005
238 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
239 - use SvPVbyte for filenames now. You *need* to encode your strings to
240 the external filename encoding first.
241 - fix the bug where filehandles could leak (again).
242 - clarify freebsd situation: make it work and tell me how, or go away
243 with your underdocumented, broken and outdated OS.
244 - fork'ing should now be officially supported (where linux and
245 posix contradict each other, I followed posix).
246 - only call read() once per poll, not twice (speedup).
247 - new functions: aio_rmdir, aio_symlink.
248 - force callback arguments to be undef or a reference, for better
249 error catching.
250
2511.1 Sun Aug 7 05:27:23 CEST 2005
3 - added configure script to detetc availability of some calls. 252 - added configure script to detect availability of some calls.
253 (imperfect, as we cannot detect things like -lrt due to missing
254 feedback yet).
255 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
256 and readahead via manual reading on platforms lacking those.
4 - ported t/03_errors.t+framework by Brad Fitzpatrick 257 - ported t/03_errors.t+framework by Brad Fitzpatrick
5 from Linux::AIO. 258 from Linux::AIO.
6 - removed XOPEN_SOURCE because stupid solaris 9 doesn't 259 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
7 compile with it enabled. Probably breaks others. Oh well. 260 compile with it enabled. Probably breaks others. Oh well.
261 - try to be more careful with errno on non-threaded perls.
262 - cygwins perl insisted on a matching open mode when morphing
263 the fd to an fh.
264 - convert sv's to "byte" encoding in aio_read/aio_write. Might
265 do that for pathnames, too, in the future, so make sure you
266 properly encode your pathnames.
8 267
91.0 Fri Jul 22 10:43:30 CEST 2005 2681.0 Fri Jul 22 10:43:30 CEST 2005
10 - aio_open did not reliably deliver (open) filehandles. 269 - aio_open did not reliably deliver (open) filehandles.
11 - all aio_*-functions keep a reference to the filehandle so 270 - all aio_*-functions keep a reference to the filehandle so
12 it doesn't go away while the aio requests is working on it. 271 it doesn't go away while the aio requests is working on it.

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