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Comparing IO-AIO/Changes (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:36 2005 UTC vs.
Revision 1.149 by root, Sun May 11 01:08:05 2008 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
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
93.01 Sun May 11 03:07:03 CEST 2008
10 - (libeio) make it compile on systems without readahead or readdir_r.
11 - (libeio) improve configure check for readahead availability.
12 - do not try to link against -lrt.
13 - use a separate configure script for IO::AIO (not the libeio one).
14
153.0 Sun May 11 00:57:14 CEST 2008
16 - added bin/treescan to the distribution.
17 - switched to using libeio.
18 - LOTS OF INCOMPATIBLE CHANGES:
19 - remove signal functionality, it is not worth the effort.
20 - max_outstanding no longer returns the previous number of requests.
21 - poll_cb no longer returns number of requests.
22
232.62 Sat Apr 26 13:59:33 CEST 2008
24 - port to solaris perls configured for old posix
25 (analysed by Jost Krieger).
26 - keep a reference to the perl filehandle object in aio_close,
27 so it doesn't get closed prematurely, leading to ugly races.
28
292.61 Wed Apr 16 18:45:02 CEST 2008
30 - fix treescan output duplication and improve output ordering.
31 also display files given on the commandline.
32 - use a different algorithm for aio_close that is faster
33 and probably has even lower chances of blocking.
34 - do our own stack memory management for threads - linux
35 allocates outrageous amounts of VM (not so bad unless you
36 use mlockall...), which severely limits the number of threads
37 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
38 and 4096 * sizeof (long) (usually this is 16..64k).
39
402.6 Sun Mar 30 08:28:11 CEST 2008
41 - added aio_sync.
42 - added aio_pathsync.
43 - fix prototypes of (void) functions.
44
452.51 Sat Oct 6 16:04:54 CEST 2007
46 - perlio isn't generally threadsafe, so aio_close could not work reliably.
47 aio_close now tries a safe hack that might not be that asynchronous
48 (see the manpage for details).
49 - discard callback return values as to not grow the stack endlessly
50 when poll_cb handles many requests without returning.
51 - minor code cleanups.
52
532.5 Thu Oct 4 14:49:08 CEST 2007
54 - replaced _fd2fh with faster xs code.
55 - aio_close will now try to do "the right thing" and thus might
56 work sensibly for the very first time.
57
582.41 Mon Sep 24 21:28:21 CEST 2007
59 - after fork, invest some work to make sure that the poll_fileno
60 stays stable (by dup2'ing the new fd over the old one), to make
61 it easier for programs/libs that don't control their forking
62 behaviour and cannot recreate their watchers.
63
642.4 Sun Aug 5 18:44:22 CEST 2007
65 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
66 successfully demonstrated that you can block on futimes...).
67 - allow undef as fileoffset for aio_read/write and use read/write(2)
68 internally (useful for sockets or O_APPEND handles).
69 - allow undef for length in aio_write.
70 - negative dataoffsets work as expected now in aio_read/aio_write.
71 - use NV instead of UV for 32 bit perls and file offsets, as NVs
72 have a larger range then.
73 - shared code between BDB and IO::AIO.
74 - aio_busy was completely broken. now fixed.
75 - readahead emulation now returns something.
76 - correctly set errno to ENOSYS on unimplemented functions
77 (should never happen, though).
78 - large changes to make it partially compile and run on win32,
79 but win32 lacks too much functionality, and perl overrides way
80 too many functions with crashing versions.
81
822.33 Tue Jan 23 23:55:41 CET 2007
83 - fix install path (Andreas J. Koenig).
84
852.32 Mon Jan 22 16:56:23 CET 2007
86 - added aio_rmtree.
87 - wow, aio_mkdir was missing.
88 - aio_load did return undef on error, not -1.
89 - use prefixexp not prefix in autoconf.pm
90 (suggested by ... rt.cpan.org unreachable).
91 - avoid installing autoconf.pm.
92
932.31 Sat Jan 6 03:46:02 CET 2007
94 - added aio_load.
95
962.3 Sat Dec 23 05:48:07 CET 2006
97 - fix off-by-one bug in aio_read, causing memory corruption
98 or crashes.
99
1002.21 Fri Dec 22 05:03:38 CET 2006
101 - minor doc updates.
102 - minor cleanups.
103 - IO::AIO::poll returns request count.
104 - undocumented and unfinished async-signal-reporting.
105
1062.2 Tue Oct 31 00:31:00 CET 2006
107 - minor doc updates.
108 - added aio_readlink.
109 - properly zero-terminate aio_read buffer.
110 - fix aio_read/write with nonzero dataoffset.
111 - reduced size of aio request structure.
112 - better diagnostics when pathnames etc. are not byte-encoded;
113 do not leak request in that case, either.
114
1152.1 Sun Oct 29 02:01:57 CET 2006
116 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
117 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
118 - fix a bug in aio_move where it would fail everytime
119 it would have to copy files manually.
120 - doc updates.
121 - start threads only on (very low) demand.
122 - end superfluous threads automatically after 10s idling.
123 - add IO::AIO::max_idle to control this.
124 - some tuning applied to random places.
125 - add aio_mknod.
126
1272.0 Thu Oct 26 18:27:58 CEST 2006
128 - minor incompatibility: max_outstanding semantics have changed.
129 - major rewrite, consider all functionality EXPERIMENTAL.
130 - aio requests can be cancelled.
131 - callbacks can be (re-)set later.
132 - aio requests can choose between 9 priorities.
133 - add aio_group: aio requests can be grouped
134 into composite requests.
135 - generator interface for groups.
136 - add IO::AIO::poll_some.
137 - major documentation improvements.
138 - very minor bugfixes.
139 - add aio_nop for dummy requests.
140 - add aio_busy mainly for benchmarking and debugging.
141 - use "fast" mutexes on linux.
142 - use dynamic (and larger) buffers instead of
143 putting them onto the stack.
144 - optimise x86 and amd64 a bit.
145 - better error checking when ENOMEM.
146 - hopefully fix mem and dirp leaks on fork.
147 - warn about broken perl malloc.
148 - compiles on cygwin (but pread is broken on cygwin
149 which is not detected by autoconf, so you have to
150 edit autoconf/config.h yourself to enable emulation).
151
1521.8 Sat Jun 24 22:20:44 CEST 2006
153 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
154
1551.73 Wed Mar 1 22:49:32 CET 2006
156 - codename "jost"
157 - AIX/Solaris(?) aren't being helpful again, hardcode a value
158 for NAME_MAX and drive with your eyes closed (reported by
159 wcooley@nakedape.cc).
160
1611.72 Thu Feb 2 00:40:44 CET 2006
162 - another minor bug in aio_scandir, again, the callback was called
163 twice when the directory can't be stat'ed.
164
1651.71 Mon Dec 26 20:20:03 CET 2005
166 - grr, another minor bug in aio_scandir, this time resulting
167 in a runtime error.
168
1691.7 Mon Dec 26 19:29:48 CET 2005
170 - aio_scandir errornously called callback twice in some cases.
171 - added AnyEvent example.
172
1731.61 Wed Sep 7 19:40:42 CEST 2005
174 - no longer include $Config{libs}, as distros include too much
175 garbage in there that is not installed on typical systems
176 (for example, debian links perl against -lgdbm and many more
177 libraries despite perl not needing it, slowing down startup and
178 wasting memory).
179
1801.6 Tue Aug 30 17:44:44 CEST 2005
181 - added aio_readdir, aio_scandir.
182 - added aio_sendfile, including sendfile emulation when sendfile
183 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
184 support is unavailable on my solaris 8 machine, but preliminary
185 code is there. What's lacking is configury stuff and testing...).
186
1871.5 Sat Aug 20 02:32:19 CEST 2005
188 - create the aio threads on demand only (good after forking).
189 - somebody nagged about C89 compatibility, so this release should
190 be C89 compatible, but no guarantees for future ones.
191 - abort when the configure script fails.
192
1931.4 Wed Aug 17 08:07:27 CEST 2005
194 - forgot to recreate the pipe after forking, this could cause
195 deadlocks.
196
1971.3 Wed Aug 17 07:25:54 CEST 2005
198 - properly propagate exceptions from callbacks, instead of silently
199 eating them.
200 - use a different fork algorithm that avoids recursive callback
201 invocations and reduces fork latency in busy processes.
202 - fix a bug where the buffer scalar in aio_read got assigned the wrong
203 length after reading.
204 - fix a bug where the child would process some outstanding requests
205 from the parent.
206 - make a copy of the callback scalar, to avoid some very uncommon
207 (but valid) usages where the callback scalar changes.
208 - the callback was never freed in aio_read/aio_write.
209 - aio_read/aio_write will now set the readonly flag on the data
210 scalar for better error reporting.
211
2121.2 Wed Aug 17 01:22:58 CEST 2005
213 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
214 - use SvPVbyte for filenames now. You *need* to encode your strings to
215 the external filename encoding first.
216 - fix the bug where filehandles could leak (again).
217 - clarify freebsd situation: make it work and tell me how, or go away
218 with your underdocumented, broken and outdated OS.
219 - fork'ing should now be officially supported (where linux and
220 posix contradict each other, I followed posix).
221 - only call read() once per poll, not twice (speedup).
222 - new functions: aio_rmdir, aio_symlink.
223 - force callback arguments to be undef or a reference, for better
224 error catching.
225
2261.1 Sun Aug 7 05:27:23 CEST 2005
227 - added configure script to detect availability of some calls.
228 (imperfect, as we cannot detect things like -lrt due to missing
229 feedback yet).
230 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
231 and readahead via manual reading on platforms lacking those.
232 - ported t/03_errors.t+framework by Brad Fitzpatrick
233 from Linux::AIO.
234 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
235 compile with it enabled. Probably breaks others. Oh well.
236 - try to be more careful with errno on non-threaded perls.
237 - cygwins perl insisted on a matching open mode when morphing
238 the fd to an fh.
239 - convert sv's to "byte" encoding in aio_read/aio_write. Might
240 do that for pathnames, too, in the future, so make sure you
241 properly encode your pathnames.
242
2431.0 Fri Jul 22 10:43:30 CEST 2005
244 - aio_open did not reliably deliver (open) filehandles.
245 - all aio_*-functions keep a reference to the filehandle so
246 it doesn't go away while the aio requests is working on it.
247 - disable warnings in AIO.pm.
248
2490.9 Wed Jul 20 23:55:04 CEST 2005
250 - allow recursive calls to poll_cb, use less locking calls, too.
251 - fix the Gtk2-example in the SYNOPSIS.
252 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
253 from Linux::AIO.
254 (found by compiling on cygwin. Unfortunately, cygwin declares but
255 does not implement pread/pwrite).
256 - only include <sys/syscall.h> on linux.
257
2580.5 Tue Jul 12 13:03:09 CEST 2005
259 - removed #include <endian.h>, it's not portable, and we don't
260 need it anyway.
261 - link against -lrt, as it might contain goodies such as fdatasync,
262 and often aio_read, which we do not use yet, but it shouldn't hurt.
263
2640.4 Mon Jul 11 05:28:25 CEST 2005
265 - added IO::AIO::flush, IO::AIO::poll.
266 - make callback argument optional for all calls.
267
2680.3 Mon Jul 11 01:42:37 CEST 2005
269 - restructured manpage.
270 - added SYNOPSIS with examples for Event, Glib, Tk.
271 - remove explicit context support so I don't have to maintain
272 it for threaded perls (i.e. it should work now :).
2 273
30.2 Sun Jul 10 22:57:12 CEST 2005 2740.2 Sun Jul 10 22:57:12 CEST 2005
4 - return immediately from poll_wait if nreqs==0. 275 - return immediately from poll_wait if nreqs==0.
5 - get rid of the request pipe and use faster thread-thread 276 - get rid of the request pipe and use faster thread-thread
6 communications for most requests and responses. 277 communications for most requests and responses.

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