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Comparing IO-AIO/Changes (file contents):
Revision 1.81 by root, Tue Oct 24 00:27:20 2006 UTC vs.
Revision 1.185 by root, Sat Jun 6 19:44:17 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: use feeder for aio_scandir. 4TODO: aio_cptree/mvtree
5TODO: -lock/unlock, +callback/etc. 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
6 8
72.0 93.2
10TODO: aio_scandir should short-circuit the case of no DT_UNKNOWN.
11 - (libeio) pwrite emulation was even more flawed than intended and did
12 not restore the file offset.
13 - add aio_readdirx, which can return inode and filetype and sort
14 the names in various ways.
15 - unfortunately, utime, chmod, chown on an open file that has just
16 been written can easily block, which caused aio_copy to block the
17 process. no more!
18 - no longer rely on dst path in aio_copy when futime is available.
19
203.19 Tue Apr 21 22:05:21 CEST 2009
21 - more perl 5.10 workarounds for aio_read and write.
22 - aio_write no longer modifies the sv (if possible).
23 - aio_read now works correctly with magic values.
24
253.18 Sun Apr 19 21:17:32 CEST 2009
26 - better diagnostics when some aio_* functions get passed an illegal fh.
27 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
28
293.17 Thu Nov 20 08:45:36 CET 2008
30 - (libeio) added aio_sync_file_range (untested).
31 - add aio_busy to @IO::AIO::AIO_REQ.
32
333.16 Wed Oct 22 18:28:01 CEST 2008
34 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
35 part to improve portability to perl 5.8 (reported by szymon).
36
373.15 Mon Oct 13 00:39:55 CEST 2008
38 - automatic removal of feeders was broken.
39 - (libeio) use a more robust method to detect whether a feeder
40 has added something to the group or not.
41
423.1 Thu Oct 2 13:34:40 CEST 2008
43 - pre-deref the passed callback object, for increased speed
44 and decreased memory usage.
45 - call on_next_submit callback even for aio_group - impact unknown,
46 but seems more correct.
47 - $req->cb now returns the original callback.
48 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
49 requiring a thread switch.
50 - (libeio) status code of aio_futime and aio_utime was always passed 0.
51 - do some other ยต-optimisations.
52
533.07 Sat Aug 2 16:06:13 CEST 2008
54 - do not include LIBS in autoconf tests.
55
563.06 Tue Jul 15 12:41:32 CEST 2008
57 - move preadwritelock definition before it's first reference,
58 to make it compile again on broken platforms (they still exist)
59 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
60
613.05 Thu Jun 19 23:23:52 CEST 2008
62 - work around perl overriding readdir etc. with thread-unsafe
63 (sic!) versions.
64
653.04 Wed Jun 18 01:35:38 CEST 2008
66 - (libeio) fix eio_mknod, which confused it's arguments.
67 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
68 is stupid.
69 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
70 - (libeio) fix a bug that could potentially cause IO::AIO
71 not to get initialised properly.
72
733.03 Thu May 29 05:33:30 CEST 2008
74 - (libeio) correctly call pthread_attr_destroy ().
75 - (libeio) work around broken bsd headers once more.
76 - reduce shared library size again by not including wrappers.
77 - max_outstanding could cause poll to enter a busy-waiting loop.
78 - document the new IO::AIO::poll_cb result value.
79
803.02 Mon May 12 02:32:02 CEST 2008
81 - fix a memory leak on aio_readlink.
82 - bring back working fchmod.
83 - nop and busy now set result to 0.
84 - set errno to ENOMEM when allocation fails.
85
863.01 Sun May 11 03:07:03 CEST 2008
87 - (libeio) make it compile on systems without readahead or readdir_r.
88 - (libeio) improve configure check for readahead availability.
89 - do not try to link against -lrt.
90 - use a separate configure script for IO::AIO (not the libeio one).
91
923.0 Sun May 11 00:57:14 CEST 2008
93 - added bin/treescan to the distribution.
94 - switched to using libeio.
95 - LOTS OF INCOMPATIBLE CHANGES:
96 - remove signal functionality, it is not worth the effort.
97 - max_outstanding no longer returns the previous number of requests.
98 - poll_cb no longer returns number of requests.
99
1002.62 Sat Apr 26 13:59:33 CEST 2008
101 - port to solaris perls configured for old posix
102 (analysed by Jost Krieger).
103 - keep a reference to the perl filehandle object in aio_close,
104 so it doesn't get closed prematurely, leading to ugly races.
105
1062.61 Wed Apr 16 18:45:02 CEST 2008
107 - fix treescan output duplication and improve output ordering.
108 also display files given on the commandline.
109 - use a different algorithm for aio_close that is faster
110 and probably has even lower chances of blocking.
111 - do our own stack memory management for threads - linux
112 allocates outrageous amounts of VM (not so bad unless you
113 use mlockall...), which severely limits the number of threads
114 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
115 and 4096 * sizeof (long) (usually this is 16..64k).
116
1172.6 Sun Mar 30 08:28:11 CEST 2008
118 - added aio_sync.
119 - added aio_pathsync.
120 - fix prototypes of (void) functions.
121
1222.51 Sat Oct 6 16:04:54 CEST 2007
123 - perlio isn't generally threadsafe, so aio_close could not work reliably.
124 aio_close now tries a safe hack that might not be that asynchronous
125 (see the manpage for details).
126 - discard callback return values as to not grow the stack endlessly
127 when poll_cb handles many requests without returning.
128 - minor code cleanups.
129
1302.5 Thu Oct 4 14:49:08 CEST 2007
131 - replaced _fd2fh with faster xs code.
132 - aio_close will now try to do "the right thing" and thus might
133 work sensibly for the very first time.
134
1352.41 Mon Sep 24 21:28:21 CEST 2007
136 - after fork, invest some work to make sure that the poll_fileno
137 stays stable (by dup2'ing the new fd over the old one), to make
138 it easier for programs/libs that don't control their forking
139 behaviour and cannot recreate their watchers.
140
1412.4 Sun Aug 5 18:44:22 CEST 2007
142 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
143 successfully demonstrated that you can block on futimes...).
144 - allow undef as fileoffset for aio_read/write and use read/write(2)
145 internally (useful for sockets or O_APPEND handles).
146 - allow undef for length in aio_write.
147 - negative dataoffsets work as expected now in aio_read/aio_write.
148 - use NV instead of UV for 32 bit perls and file offsets, as NVs
149 have a larger range then.
150 - shared code between BDB and IO::AIO.
151 - aio_busy was completely broken. now fixed.
152 - readahead emulation now returns something.
153 - correctly set errno to ENOSYS on unimplemented functions
154 (should never happen, though).
155 - large changes to make it partially compile and run on win32,
156 but win32 lacks too much functionality, and perl overrides way
157 too many functions with crashing versions.
158
1592.33 Tue Jan 23 23:55:41 CET 2007
160 - fix install path (Andreas J. Koenig).
161
1622.32 Mon Jan 22 16:56:23 CET 2007
163 - added aio_rmtree.
164 - wow, aio_mkdir was missing.
165 - aio_load did return undef on error, not -1.
166 - use prefixexp not prefix in autoconf.pm
167 (suggested by ... rt.cpan.org unreachable).
168 - avoid installing autoconf.pm.
169
1702.31 Sat Jan 6 03:46:02 CET 2007
171 - added aio_load.
172
1732.3 Sat Dec 23 05:48:07 CET 2006
174 - fix off-by-one bug in aio_read, causing memory corruption
175 or crashes.
176
1772.21 Fri Dec 22 05:03:38 CET 2006
178 - minor doc updates.
179 - minor cleanups.
180 - IO::AIO::poll returns request count.
181 - undocumented and unfinished async-signal-reporting.
182
1832.2 Tue Oct 31 00:31:00 CET 2006
184 - minor doc updates.
185 - added aio_readlink.
186 - properly zero-terminate aio_read buffer.
187 - fix aio_read/write with nonzero dataoffset.
188 - reduced size of aio request structure.
189 - better diagnostics when pathnames etc. are not byte-encoded;
190 do not leak request in that case, either.
191
1922.1 Sun Oct 29 02:01:57 CET 2006
193 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
194 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
195 - fix a bug in aio_move where it would fail everytime
196 it would have to copy files manually.
197 - doc updates.
198 - start threads only on (very low) demand.
199 - end superfluous threads automatically after 10s idling.
200 - add IO::AIO::max_idle to control this.
201 - some tuning applied to random places.
202 - add aio_mknod.
203
2042.0 Thu Oct 26 18:27:58 CEST 2006
205 - minor incompatibility: max_outstanding semantics have changed.
206 - major rewrite, consider all functionality EXPERIMENTAL.
8 - aio requests can be cancelled. 207 - aio requests can be cancelled.
9 - callbacks can be (re-)set later. 208 - callbacks can be (re-)set later.
209 - aio requests can choose between 9 priorities.
10 - add aio_group: aio requests can be grouped. 210 - add aio_group: aio requests can be grouped
211 into composite requests.
11 - implement generator interface for groups. 212 - generator interface for groups.
213 - add IO::AIO::poll_some.
12 - major documentation improvements. 214 - major documentation improvements.
13 - very minor bugfixes. 215 - very minor bugfixes.
14 - add aio_nop for dummy requests. 216 - add aio_nop for dummy requests.
15 - add aio_sleep mainly for benchmarking and debugging. 217 - add aio_busy mainly for benchmarking and debugging.
16 - deprecated max_outstanding.
17 - use "fast" mutexes on linux. 218 - use "fast" mutexes on linux.
18 - use dynamic (and larger) buffers instead of 219 - use dynamic (and larger) buffers instead of
19 putting them onto the stack. 220 putting them onto the stack.
20 - optimise x86 and amd64 a bit. 221 - optimise x86 and amd64 a bit.
21 - better error checking when ENOMEM. 222 - better error checking when ENOMEM.
223 - hopefully fix mem and dirp leaks on fork.
224 - warn about broken perl malloc.
225 - compiles on cygwin (but pread is broken on cygwin
226 which is not detected by autoconf, so you have to
227 edit autoconf/config.h yourself to enable emulation).
22 228
231.8 Sat Jun 24 22:20:44 CEST 2006 2291.8 Sat Jun 24 22:20:44 CEST 2006
24 - add and/or document aio_rename, aio_link, aio_symlink and aio_move. 230 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
25 231
261.73 Wed Mar 1 22:49:32 CET 2006 2321.73 Wed Mar 1 22:49:32 CET 2006
… …
60 - somebody nagged about C89 compatibility, so this release should 266 - somebody nagged about C89 compatibility, so this release should
61 be C89 compatible, but no guarantees for future ones. 267 be C89 compatible, but no guarantees for future ones.
62 - abort when the configure script fails. 268 - abort when the configure script fails.
63 269
641.4 Wed Aug 17 08:07:27 CEST 2005 2701.4 Wed Aug 17 08:07:27 CEST 2005
65 - forget to recreate the pipe after forking, this could cause 271 - forgot to recreate the pipe after forking, this could cause
66 deadlocks. 272 deadlocks.
67 273
681.3 Wed Aug 17 07:25:54 CEST 2005 2741.3 Wed Aug 17 07:25:54 CEST 2005
69 - properly propagate exceptions from callbacks, instead of silently 275 - properly propagate exceptions from callbacks, instead of silently
70 eating them. 276 eating them.

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