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Comparing IO-AIO/Changes (file contents):
Revision 1.26 by root, Sun Jul 31 21:21:12 2005 UTC vs.
Revision 1.142 by root, Sat Apr 26 12:00:23 2008 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
31.1 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
92.62 Sat Apr 26 13:59:33 CEST 2008
10 - port to solaris perls configured for old posix
11 (analysed by Jost Krieger).
12 - keep a reference to the perl filehandle object in aio_close,
13 so it doesn't get closed prematurely, leading to ugly races.
14
152.61 Wed Apr 16 18:45:02 CEST 2008
16 - fix treescan output duplication and improve output ordering.
17 also display files given on the commandline.
18 - use a different algorithm for aio_close that is faster
19 and probably has even lower chances of blocking.
20 - do our own stack memory management for threads - linux
21 allocates outrageous amounts of VM (not so bad unless you
22 use mlockall...), which severely limits the number of threads
23 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
24 and 4096 * sizeof (long) (usually this is 16..64k).
25
262.6 Sun Mar 30 08:28:11 CEST 2008
27 - added aio_sync.
28 - added aio_pathsync.
29 - fix prototypes of (void) functions.
30
312.51 Sat Oct 6 16:04:54 CEST 2007
32 - perlio isn't generally threadsafe, so aio_close could not work reliably.
33 aio_close now tries a safe hack that might not be that asynchronous
34 (see the manpage for details).
35 - discard callback return values as to not grow the stack endlessly
36 when poll_cb handles many requests without returning.
37 - minor code cleanups.
38
392.5 Thu Oct 4 14:49:08 CEST 2007
40 - replaced _fd2fh with faster xs code.
41 - aio_close will now try to do "the right thing" and thus might
42 work sensibly for the very first time.
43
442.41 Mon Sep 24 21:28:21 CEST 2007
45 - after fork, invest some work to make sure that the poll_fileno
46 stays stable (by dup2'ing the new fd over the old one), to make
47 it easier for programs/libs that don't control their forking
48 behaviour and cannot recreate their watchers.
49
502.4 Sun Aug 5 18:44:22 CEST 2007
51 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
52 successfully demonstrated that you can block on futimes...).
53 - allow undef as fileoffset for aio_read/write and use read/write(2)
54 internally (useful for sockets or O_APPEND handles).
55 - allow undef for length in aio_write.
56 - negative dataoffsets work as expected now in aio_read/aio_write.
57 - use NV instead of UV for 32 bit perls and file offsets, as NVs
58 have a larger range then.
59 - shared code between BDB and IO::AIO.
60 - aio_busy was completely broken. now fixed.
61 - readahead emulation now returns something.
62 - correctly set errno to ENOSYS on unimplemented functions
63 (should never happen, though).
64 - large changes to make it partially compile and run on win32,
65 but win32 lacks too much functionality, and perl overrides way
66 too many functions with crashing versions.
67
682.33 Tue Jan 23 23:55:41 CET 2007
69 - fix install path (Andreas J. Koenig).
70
712.32 Mon Jan 22 16:56:23 CET 2007
72 - added aio_rmtree.
73 - wow, aio_mkdir was missing.
74 - aio_load did return undef on error, not -1.
75 - use prefixexp not prefix in autoconf.pm
76 (suggested by ... rt.cpan.org unreachable).
77 - avoid installing autoconf.pm.
78
792.31 Sat Jan 6 03:46:02 CET 2007
80 - added aio_load.
81
822.3 Sat Dec 23 05:48:07 CET 2006
83 - fix off-by-one bug in aio_read, causing memory corruption
84 or crashes.
85
862.21 Fri Dec 22 05:03:38 CET 2006
87 - minor doc updates.
88 - minor cleanups.
89 - IO::AIO::poll returns request count.
90 - undocumented and unfinished async-signal-reporting.
91
922.2 Tue Oct 31 00:31:00 CET 2006
93 - minor doc updates.
94 - added aio_readlink.
95 - properly zero-terminate aio_read buffer.
96 - fix aio_read/write with nonzero dataoffset.
97 - reduced size of aio request structure.
98 - better diagnostics when pathnames etc. are not byte-encoded;
99 do not leak request in that case, either.
100
1012.1 Sun Oct 29 02:01:57 CET 2006
102 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
103 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
104 - fix a bug in aio_move where it would fail everytime
105 it would have to copy files manually.
106 - doc updates.
107 - start threads only on (very low) demand.
108 - end superfluous threads automatically after 10s idling.
109 - add IO::AIO::max_idle to control this.
110 - some tuning applied to random places.
111 - add aio_mknod.
112
1132.0 Thu Oct 26 18:27:58 CEST 2006
114 - minor incompatibility: max_outstanding semantics have changed.
115 - major rewrite, consider all functionality EXPERIMENTAL.
116 - aio requests can be cancelled.
117 - callbacks can be (re-)set later.
118 - aio requests can choose between 9 priorities.
119 - add aio_group: aio requests can be grouped
120 into composite requests.
121 - generator interface for groups.
122 - add IO::AIO::poll_some.
123 - major documentation improvements.
124 - very minor bugfixes.
125 - add aio_nop for dummy requests.
126 - add aio_busy mainly for benchmarking and debugging.
127 - use "fast" mutexes on linux.
128 - use dynamic (and larger) buffers instead of
129 putting them onto the stack.
130 - optimise x86 and amd64 a bit.
131 - better error checking when ENOMEM.
132 - hopefully fix mem and dirp leaks on fork.
133 - warn about broken perl malloc.
134 - compiles on cygwin (but pread is broken on cygwin
135 which is not detected by autoconf, so you have to
136 edit autoconf/config.h yourself to enable emulation).
137
1381.8 Sat Jun 24 22:20:44 CEST 2006
139 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
140
1411.73 Wed Mar 1 22:49:32 CET 2006
142 - codename "jost"
143 - AIX/Solaris(?) aren't being helpful again, hardcode a value
144 for NAME_MAX and drive with your eyes closed (reported by
145 wcooley@nakedape.cc).
146
1471.72 Thu Feb 2 00:40:44 CET 2006
148 - another minor bug in aio_scandir, again, the callback was called
149 twice when the directory can't be stat'ed.
150
1511.71 Mon Dec 26 20:20:03 CET 2005
152 - grr, another minor bug in aio_scandir, this time resulting
153 in a runtime error.
154
1551.7 Mon Dec 26 19:29:48 CET 2005
156 - aio_scandir errornously called callback twice in some cases.
157 - added AnyEvent example.
158
1591.61 Wed Sep 7 19:40:42 CEST 2005
160 - no longer include $Config{libs}, as distros include too much
161 garbage in there that is not installed on typical systems
162 (for example, debian links perl against -lgdbm and many more
163 libraries despite perl not needing it, slowing down startup and
164 wasting memory).
165
1661.6 Tue Aug 30 17:44:44 CEST 2005
167 - added aio_readdir, aio_scandir.
168 - added aio_sendfile, including sendfile emulation when sendfile
169 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
170 support is unavailable on my solaris 8 machine, but preliminary
171 code is there. What's lacking is configury stuff and testing...).
172
1731.5 Sat Aug 20 02:32:19 CEST 2005
174 - create the aio threads on demand only (good after forking).
175 - somebody nagged about C89 compatibility, so this release should
176 be C89 compatible, but no guarantees for future ones.
177 - abort when the configure script fails.
178
1791.4 Wed Aug 17 08:07:27 CEST 2005
180 - forgot to recreate the pipe after forking, this could cause
181 deadlocks.
182
1831.3 Wed Aug 17 07:25:54 CEST 2005
184 - properly propagate exceptions from callbacks, instead of silently
185 eating them.
186 - use a different fork algorithm that avoids recursive callback
187 invocations and reduces fork latency in busy processes.
188 - fix a bug where the buffer scalar in aio_read got assigned the wrong
189 length after reading.
190 - fix a bug where the child would process some outstanding requests
191 from the parent.
192 - make a copy of the callback scalar, to avoid some very uncommon
193 (but valid) usages where the callback scalar changes.
194 - the callback was never freed in aio_read/aio_write.
195 - aio_read/aio_write will now set the readonly flag on the data
196 scalar for better error reporting.
197
1981.2 Wed Aug 17 01:22:58 CEST 2005
199 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
200 - use SvPVbyte for filenames now. You *need* to encode your strings to
201 the external filename encoding first.
202 - fix the bug where filehandles could leak (again).
203 - clarify freebsd situation: make it work and tell me how, or go away
204 with your underdocumented, broken and outdated OS.
205 - fork'ing should now be officially supported (where linux and
206 posix contradict each other, I followed posix).
207 - only call read() once per poll, not twice (speedup).
208 - new functions: aio_rmdir, aio_symlink.
209 - force callback arguments to be undef or a reference, for better
210 error catching.
211
2121.1 Sun Aug 7 05:27:23 CEST 2005
4 - added configure script to detect availability of some calls. 213 - added configure script to detect availability of some calls.
5 (imperfect, as we cannot detect things like -lrt due it missing 214 (imperfect, as we cannot detect things like -lrt due to missing
6 feedback yet). 215 feedback yet).
7 - emulate fdatasync by fsync, pread/pwrite by unsafe read/write 216 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
8 and readahead by manual reading on platforms lacking those. 217 and readahead via manual reading on platforms lacking those.
9 - ported t/03_errors.t+framework by Brad Fitzpatrick 218 - ported t/03_errors.t+framework by Brad Fitzpatrick
10 from Linux::AIO. 219 from Linux::AIO.
11 - removed XOPEN_SOURCE because stupid solaris 9 doesn't 220 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
12 compile with it enabled. Probably breaks others. Oh well. 221 compile with it enabled. Probably breaks others. Oh well.
13 - try to be more careful with errno on non-threaded perls. 222 - try to be more careful with errno on non-threaded perls.
14 - cygwins perl insisted on a matching open mode when morphing 223 - cygwins perl insisted on a matching open mode when morphing
15 the fd to an fh. 224 the fd to an fh.
225 - convert sv's to "byte" encoding in aio_read/aio_write. Might
226 do that for pathnames, too, in the future, so make sure you
227 properly encode your pathnames.
16 228
171.0 Fri Jul 22 10:43:30 CEST 2005 2291.0 Fri Jul 22 10:43:30 CEST 2005
18 - aio_open did not reliably deliver (open) filehandles. 230 - aio_open did not reliably deliver (open) filehandles.
19 - all aio_*-functions keep a reference to the filehandle so 231 - all aio_*-functions keep a reference to the filehandle so
20 it doesn't go away while the aio requests is working on it. 232 it doesn't go away while the aio requests is working on it.

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