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Comparing IO-AIO/Changes (file contents):
Revision 1.9 by root, Mon Jul 11 01:49:14 2005 UTC vs.
Revision 1.209 by root, Mon Nov 30 22:22:13 2009 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? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
8TODO: fallocate, if it wouldn't be so useless.
9
10 - (libeio) max_poll_time was not properly converted to ticks.
11 - clarify cancel_subs description.
12
133.31 Thu Nov 12 02:14:29 CET 2009
14 - fix result status documentation of aio_copy, aio_move.
15 - speed up object creation considerably by avoiding
16 hash lookups.
17
183.3 Wed Aug 5 13:52:58 CEST 2009
19 - use common::sense.
20 - use common schmorp.h header.
21 - allow integers (file descriptors) in addition to file handles.
22 - take advantage of linux' eventfd (but it seems slower on smp?).
23 - use poll not select on posix platforms.
24
253.261 Wed Jul 1 10:11:51 CEST 2009
26 - more 0S X workarounds (patch by Tokuhiro Matsuno).
27
283.26 Tue Jun 30 09:33:26 CEST 2009
29 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
30 try to work around this horribly broken OS in a somewhat hackish
31 way. might help other os's too.
32
333.25 Sat Jun 27 05:18:26 CEST 2009
34 - added IO::AIO::fadvise and IO::AIO::sendfile.
35 - (libeio) replaced quicksort+insertion sort by a tuned radix
36 sort + insertion sort, resulting in comparable runtime (usually
37 faster) to the old version, but without any ill side effects on
38 degenerated (for quicksort) data.
39 - (libeio) correctly sort dirs by inodes if we have perfect type
40 knowledge and DIRS_FIRST is used.
41 - (libeio) internally the wrong DT_* constants were used, but no
42 known system has differing EIO_DT_*/DT_* values, so not an issue.
43 - removed a (harmless) assert that was left over on the code
44 but should not have been.
45 - use more correct types (change IO length from IV to VAL64,
46 which makes a difference on systems without 64 bit perls).
47
483.23 Sat Jun 13 16:57:58 CEST 2009
49 - fix off-by-one bug in aio_readdir that was introduced in the
50 rushed 3.22 release.
51
523.22 Sat Jun 13 15:32:40 CEST 2009
53 - speed up readdirx sort algorithm slightly.
54 - bin/treescan was missing from distro tarball.
55
563.21 Fri Jun 12 18:45:53 CEST 2009
57 - new options --dirs and --files for treescan.
58 - install bin/treescan by default.
59 - (libeio) aio_readdir can now be cancelled while executing.
60 - fix a printf format string for 64 bit systems (could lead
61 to problems on big endian 64 bit systems).
62 - do not use qsort() but our own algorithm: glibc initialises
63 the whole locale and I/O subsystem inside qsort, causing
64 a stack overflow on 32 bit machines. The new sort uses much less
65 stack and is more than twice as fast in typical situations.
66
673.2 Sun Jun 7 20:30:05 CEST 2009
68 - (libeio) pwrite emulation was even more flawed than intended and did
69 not restore the file offset.
70 - add aio_readdirx, which can return inode and filetype and sort
71 the names in various ways.
72 - unfortunately, utime, chmod, chown on an open file that has just
73 been written can easily block, which caused aio_copy to block the
74 process. no more!
75 - no longer rely on dst path in aio_copy when futime is available.
76
773.19 Tue Apr 21 22:05:21 CEST 2009
78 - more perl 5.10 workarounds for aio_read and write.
79 - aio_write no longer modifies the sv (if possible).
80 - aio_read now works correctly with magic values.
81
823.18 Sun Apr 19 21:17:32 CEST 2009
83 - better diagnostics when some aio_* functions get passed an illegal fh.
84 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
85
863.17 Thu Nov 20 08:45:36 CET 2008
87 - (libeio) added aio_sync_file_range (untested).
88 - add aio_busy to @IO::AIO::AIO_REQ.
89
903.16 Wed Oct 22 18:28:01 CEST 2008
91 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
92 part to improve portability to perl 5.8 (reported by szymon).
93
943.15 Mon Oct 13 00:39:55 CEST 2008
95 - automatic removal of feeders was broken.
96 - (libeio) use a more robust method to detect whether a feeder
97 has added something to the group or not.
98
993.1 Thu Oct 2 13:34:40 CEST 2008
100 - pre-deref the passed callback object, for increased speed
101 and decreased memory usage.
102 - call on_next_submit callback even for aio_group - impact unknown,
103 but seems more correct.
104 - $req->cb now returns the original callback.
105 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
106 requiring a thread switch.
107 - (libeio) status code of aio_futime and aio_utime was always passed 0.
108 - do some other ยต-optimisations.
109
1103.07 Sat Aug 2 16:06:13 CEST 2008
111 - do not include LIBS in autoconf tests.
112
1133.06 Tue Jul 15 12:41:32 CEST 2008
114 - move preadwritelock definition before it's first reference,
115 to make it compile again on broken platforms (they still exist)
116 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
117
1183.05 Thu Jun 19 23:23:52 CEST 2008
119 - work around perl overriding readdir etc. with thread-unsafe
120 (sic!) versions.
121
1223.04 Wed Jun 18 01:35:38 CEST 2008
123 - (libeio) fix eio_mknod, which confused it's arguments.
124 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
125 is stupid.
126 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
127 - (libeio) fix a bug that could potentially cause IO::AIO
128 not to get initialised properly.
129
1303.03 Thu May 29 05:33:30 CEST 2008
131 - (libeio) correctly call pthread_attr_destroy ().
132 - (libeio) work around broken bsd headers once more.
133 - reduce shared library size again by not including wrappers.
134 - max_outstanding could cause poll to enter a busy-waiting loop.
135 - document the new IO::AIO::poll_cb result value.
136
1373.02 Mon May 12 02:32:02 CEST 2008
138 - fix a memory leak on aio_readlink.
139 - bring back working fchmod.
140 - nop and busy now set result to 0.
141 - set errno to ENOMEM when allocation fails.
142
1433.01 Sun May 11 03:07:03 CEST 2008
144 - (libeio) make it compile on systems without readahead or readdir_r.
145 - (libeio) improve configure check for readahead availability.
146 - do not try to link against -lrt.
147 - use a separate configure script for IO::AIO (not the libeio one).
148
1493.0 Sun May 11 00:57:14 CEST 2008
150 - added bin/treescan to the distribution.
151 - switched to using libeio.
152 - LOTS OF INCOMPATIBLE CHANGES:
153 - remove signal functionality, it is not worth the effort.
154 - max_outstanding no longer returns the previous number of requests.
155 - poll_cb no longer returns number of requests.
156
1572.62 Sat Apr 26 13:59:33 CEST 2008
158 - port to solaris perls configured for old posix
159 (analysed by Jost Krieger).
160 - keep a reference to the perl filehandle object in aio_close,
161 so it doesn't get closed prematurely, leading to ugly races.
162
1632.61 Wed Apr 16 18:45:02 CEST 2008
164 - fix treescan output duplication and improve output ordering.
165 also display files given on the commandline.
166 - use a different algorithm for aio_close that is faster
167 and probably has even lower chances of blocking.
168 - do our own stack memory management for threads - linux
169 allocates outrageous amounts of VM (not so bad unless you
170 use mlockall...), which severely limits the number of threads
171 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
172 and 4096 * sizeof (long) (usually this is 16..64k).
173
1742.6 Sun Mar 30 08:28:11 CEST 2008
175 - added aio_sync.
176 - added aio_pathsync.
177 - fix prototypes of (void) functions.
178
1792.51 Sat Oct 6 16:04:54 CEST 2007
180 - perlio isn't generally threadsafe, so aio_close could not work reliably.
181 aio_close now tries a safe hack that might not be that asynchronous
182 (see the manpage for details).
183 - discard callback return values as to not grow the stack endlessly
184 when poll_cb handles many requests without returning.
185 - minor code cleanups.
186
1872.5 Thu Oct 4 14:49:08 CEST 2007
188 - replaced _fd2fh with faster xs code.
189 - aio_close will now try to do "the right thing" and thus might
190 work sensibly for the very first time.
191
1922.41 Mon Sep 24 21:28:21 CEST 2007
193 - after fork, invest some work to make sure that the poll_fileno
194 stays stable (by dup2'ing the new fd over the old one), to make
195 it easier for programs/libs that don't control their forking
196 behaviour and cannot recreate their watchers.
197
1982.4 Sun Aug 5 18:44:22 CEST 2007
199 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
200 successfully demonstrated that you can block on futimes...).
201 - allow undef as fileoffset for aio_read/write and use read/write(2)
202 internally (useful for sockets or O_APPEND handles).
203 - allow undef for length in aio_write.
204 - negative dataoffsets work as expected now in aio_read/aio_write.
205 - use NV instead of UV for 32 bit perls and file offsets, as NVs
206 have a larger range then.
207 - shared code between BDB and IO::AIO.
208 - aio_busy was completely broken. now fixed.
209 - readahead emulation now returns something.
210 - correctly set errno to ENOSYS on unimplemented functions
211 (should never happen, though).
212 - large changes to make it partially compile and run on win32,
213 but win32 lacks too much functionality, and perl overrides way
214 too many functions with crashing versions.
215
2162.33 Tue Jan 23 23:55:41 CET 2007
217 - fix install path (Andreas J. Koenig).
218
2192.32 Mon Jan 22 16:56:23 CET 2007
220 - added aio_rmtree.
221 - wow, aio_mkdir was missing.
222 - aio_load did return undef on error, not -1.
223 - use prefixexp not prefix in autoconf.pm
224 (suggested by ... rt.cpan.org unreachable).
225 - avoid installing autoconf.pm.
226
2272.31 Sat Jan 6 03:46:02 CET 2007
228 - added aio_load.
229
2302.3 Sat Dec 23 05:48:07 CET 2006
231 - fix off-by-one bug in aio_read, causing memory corruption
232 or crashes.
233
2342.21 Fri Dec 22 05:03:38 CET 2006
235 - minor doc updates.
236 - minor cleanups.
237 - IO::AIO::poll returns request count.
238 - undocumented and unfinished async-signal-reporting.
239
2402.2 Tue Oct 31 00:31:00 CET 2006
241 - minor doc updates.
242 - added aio_readlink.
243 - properly zero-terminate aio_read buffer.
244 - fix aio_read/write with nonzero dataoffset.
245 - reduced size of aio request structure.
246 - better diagnostics when pathnames etc. are not byte-encoded;
247 do not leak request in that case, either.
248
2492.1 Sun Oct 29 02:01:57 CET 2006
250 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
251 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
252 - fix a bug in aio_move where it would fail everytime
253 it would have to copy files manually.
254 - doc updates.
255 - start threads only on (very low) demand.
256 - end superfluous threads automatically after 10s idling.
257 - add IO::AIO::max_idle to control this.
258 - some tuning applied to random places.
259 - add aio_mknod.
260
2612.0 Thu Oct 26 18:27:58 CEST 2006
262 - minor incompatibility: max_outstanding semantics have changed.
263 - major rewrite, consider all functionality EXPERIMENTAL.
264 - aio requests can be cancelled.
265 - callbacks can be (re-)set later.
266 - aio requests can choose between 9 priorities.
267 - add aio_group: aio requests can be grouped
268 into composite requests.
269 - generator interface for groups.
270 - add IO::AIO::poll_some.
271 - major documentation improvements.
272 - very minor bugfixes.
273 - add aio_nop for dummy requests.
274 - add aio_busy mainly for benchmarking and debugging.
275 - use "fast" mutexes on linux.
276 - use dynamic (and larger) buffers instead of
277 putting them onto the stack.
278 - optimise x86 and amd64 a bit.
279 - better error checking when ENOMEM.
280 - hopefully fix mem and dirp leaks on fork.
281 - warn about broken perl malloc.
282 - compiles on cygwin (but pread is broken on cygwin
283 which is not detected by autoconf, so you have to
284 edit autoconf/config.h yourself to enable emulation).
285
2861.8 Sat Jun 24 22:20:44 CEST 2006
287 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
288
2891.73 Wed Mar 1 22:49:32 CET 2006
290 - codename "jost"
291 - AIX/Solaris(?) aren't being helpful again, hardcode a value
292 for NAME_MAX and drive with your eyes closed (reported by
293 wcooley@nakedape.cc).
294
2951.72 Thu Feb 2 00:40:44 CET 2006
296 - another minor bug in aio_scandir, again, the callback was called
297 twice when the directory can't be stat'ed.
298
2991.71 Mon Dec 26 20:20:03 CET 2005
300 - grr, another minor bug in aio_scandir, this time resulting
301 in a runtime error.
302
3031.7 Mon Dec 26 19:29:48 CET 2005
304 - aio_scandir errornously called callback twice in some cases.
305 - added AnyEvent example.
306
3071.61 Wed Sep 7 19:40:42 CEST 2005
308 - no longer include $Config{libs}, as distros include too much
309 garbage in there that is not installed on typical systems
310 (for example, debian links perl against -lgdbm and many more
311 libraries despite perl not needing it, slowing down startup and
312 wasting memory).
313
3141.6 Tue Aug 30 17:44:44 CEST 2005
315 - added aio_readdir, aio_scandir.
316 - added aio_sendfile, including sendfile emulation when sendfile
317 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
318 support is unavailable on my solaris 8 machine, but preliminary
319 code is there. What's lacking is configury stuff and testing...).
320
3211.5 Sat Aug 20 02:32:19 CEST 2005
322 - create the aio threads on demand only (good after forking).
323 - somebody nagged about C89 compatibility, so this release should
324 be C89 compatible, but no guarantees for future ones.
325 - abort when the configure script fails.
326
3271.4 Wed Aug 17 08:07:27 CEST 2005
328 - forgot to recreate the pipe after forking, this could cause
329 deadlocks.
330
3311.3 Wed Aug 17 07:25:54 CEST 2005
332 - properly propagate exceptions from callbacks, instead of silently
333 eating them.
334 - use a different fork algorithm that avoids recursive callback
335 invocations and reduces fork latency in busy processes.
336 - fix a bug where the buffer scalar in aio_read got assigned the wrong
337 length after reading.
338 - fix a bug where the child would process some outstanding requests
339 from the parent.
340 - make a copy of the callback scalar, to avoid some very uncommon
341 (but valid) usages where the callback scalar changes.
342 - the callback was never freed in aio_read/aio_write.
343 - aio_read/aio_write will now set the readonly flag on the data
344 scalar for better error reporting.
345
3461.2 Wed Aug 17 01:22:58 CEST 2005
347 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
348 - use SvPVbyte for filenames now. You *need* to encode your strings to
349 the external filename encoding first.
350 - fix the bug where filehandles could leak (again).
351 - clarify freebsd situation: make it work and tell me how, or go away
352 with your underdocumented, broken and outdated OS.
353 - fork'ing should now be officially supported (where linux and
354 posix contradict each other, I followed posix).
355 - only call read() once per poll, not twice (speedup).
356 - new functions: aio_rmdir, aio_symlink.
357 - force callback arguments to be undef or a reference, for better
358 error catching.
359
3601.1 Sun Aug 7 05:27:23 CEST 2005
361 - added configure script to detect availability of some calls.
362 (imperfect, as we cannot detect things like -lrt due to missing
363 feedback yet).
364 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
365 and readahead via manual reading on platforms lacking those.
366 - ported t/03_errors.t+framework by Brad Fitzpatrick
367 from Linux::AIO.
368 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
369 compile with it enabled. Probably breaks others. Oh well.
370 - try to be more careful with errno on non-threaded perls.
371 - cygwins perl insisted on a matching open mode when morphing
372 the fd to an fh.
373 - convert sv's to "byte" encoding in aio_read/aio_write. Might
374 do that for pathnames, too, in the future, so make sure you
375 properly encode your pathnames.
376
3771.0 Fri Jul 22 10:43:30 CEST 2005
378 - aio_open did not reliably deliver (open) filehandles.
379 - all aio_*-functions keep a reference to the filehandle so
380 it doesn't go away while the aio requests is working on it.
381 - disable warnings in AIO.pm.
382
3830.9 Wed Jul 20 23:55:04 CEST 2005
384 - allow recursive calls to poll_cb, use less locking calls, too.
385 - fix the Gtk2-example in the SYNOPSIS.
386 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
387 from Linux::AIO.
388 (found by compiling on cygwin. Unfortunately, cygwin declares but
389 does not implement pread/pwrite).
390 - only include <sys/syscall.h> on linux.
391
3920.5 Tue Jul 12 13:03:09 CEST 2005
393 - removed #include <endian.h>, it's not portable, and we don't
394 need it anyway.
395 - link against -lrt, as it might contain goodies such as fdatasync,
396 and often aio_read, which we do not use yet, but it shouldn't hurt.
397
3980.4 Mon Jul 11 05:28:25 CEST 2005
3 - added IO::AIO::flush, IO::AIO::poll. 399 - added IO::AIO::flush, IO::AIO::poll.
400 - make callback argument optional for all calls.
4 401
50.3 Mon Jul 11 01:42:37 CEST 2005 4020.3 Mon Jul 11 01:42:37 CEST 2005
6 - restructured manpage. 403 - restructured manpage.
7 - added SYNOPSIS with examples for Event, Glib, Tk. 404 - added SYNOPSIS with examples for Event, Glib, Tk.
8 - remove explicit context support so I don't have to maintain 405 - remove explicit context support so I don't have to maintain

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