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Comparing IO-AIO/Changes (file contents):
Revision 1.19 by root, Sun Jul 31 17:24:05 2005 UTC vs.
Revision 1.227 by root, Wed Mar 31 00:46:18 2010 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.
9TODO: aio_mincore?
10TODO: posix_madvise.
11
123.65 Wed Mar 31 02:45:05 CEST 2010
13 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
14 cut off long pathnames in aio_readlink (based on patch by
15 Rasmus Andersson).
16 - a double fork partially killed the event pipe (great testcase
17 by dormando). affects IO::AIO, BDB and Async::Interrupt.
18 - suck steve's dick and rename our symbols to avoid colliding
19 with nonstandard identifier spam on the broken os x pseudo-os.
20 affects IO::AIO and BDB.
21
223.6 Mon Jan 11 00:43:39 CET 2010
23 - (libeio) more fixes for the freebsd/apple sendfile - broken by
24 manpage standards, but apparently correct accoridng to actual
25 kernel sources.
26 - add IO::AIO::mmap/munmap support.
27 - add IO::AIO::m(un)lockall support.
28 - clean up manpage.
29
303.5 Thu Jan 7 21:25:04 CET 2010
31 - (liebio) fix freebsd sendfile (Vanilla Hsu).
32 - (libeio) also fix darwin sendfile that suffered from a similar bug.
33 - add aio_statvfs as interface to statvfs/fstatvfs.
34 - work around buggy symlink() on cygwin in the testsuite.
35 - wtf. freebsd-8.0 actually passes the testsuite! I knew
36 they could implement fork and semaphores one day! cheers!
37
383.4 Sat Jan 2 15:13:04 CET 2010
39 - (libeio) max_poll_time was not properly converted to ticks.
40 - clarify cancel_subs description.
41 - IO::AIO::sendfile did not actually return the return value
42 from the sendfile call.
43 - implement aio_msync, aio_mtouch.
44 - (libeio) tentatively support darwin in sendfile.
45
463.31 Thu Nov 12 02:14:29 CET 2009
47 - fix result status documentation of aio_copy, aio_move.
48 - speed up object creation considerably by avoiding
49 hash lookups.
50
513.3 Wed Aug 5 13:52:58 CEST 2009
52 - use common::sense.
53 - use common schmorp.h header.
54 - allow integers (file descriptors) in addition to file handles.
55 - take advantage of linux' eventfd (but it seems slower on smp?).
56 - use poll not select on posix platforms.
57
583.261 Wed Jul 1 10:11:51 CEST 2009
59 - more 0S X workarounds (patch by Tokuhiro Matsuno).
60
613.26 Tue Jun 30 09:33:26 CEST 2009
62 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
63 try to work around this horribly broken OS in a somewhat hackish
64 way. might help other os's too.
65
663.25 Sat Jun 27 05:18:26 CEST 2009
67 - added IO::AIO::fadvise and IO::AIO::sendfile.
68 - (libeio) replaced quicksort+insertion sort by a tuned radix
69 sort + insertion sort, resulting in comparable runtime (usually
70 faster) to the old version, but without any ill side effects on
71 degenerated (for quicksort) data.
72 - (libeio) correctly sort dirs by inodes if we have perfect type
73 knowledge and DIRS_FIRST is used.
74 - (libeio) internally the wrong DT_* constants were used, but no
75 known system has differing EIO_DT_*/DT_* values, so not an issue.
76 - removed a (harmless) assert that was left over on the code
77 but should not have been.
78 - use more correct types (change IO length from IV to VAL64,
79 which makes a difference on systems without 64 bit perls).
80
813.23 Sat Jun 13 16:57:58 CEST 2009
82 - fix off-by-one bug in aio_readdir that was introduced in the
83 rushed 3.22 release.
84
853.22 Sat Jun 13 15:32:40 CEST 2009
86 - speed up readdirx sort algorithm slightly.
87 - bin/treescan was missing from distro tarball.
88
893.21 Fri Jun 12 18:45:53 CEST 2009
90 - new options --dirs and --files for treescan.
91 - install bin/treescan by default.
92 - (libeio) aio_readdir can now be cancelled while executing.
93 - fix a printf format string for 64 bit systems (could lead
94 to problems on big endian 64 bit systems).
95 - do not use qsort() but our own algorithm: glibc initialises
96 the whole locale and I/O subsystem inside qsort, causing
97 a stack overflow on 32 bit machines. The new sort uses much less
98 stack and is more than twice as fast in typical situations.
99
1003.2 Sun Jun 7 20:30:05 CEST 2009
101 - (libeio) pwrite emulation was even more flawed than intended and did
102 not restore the file offset.
103 - add aio_readdirx, which can return inode and filetype and sort
104 the names in various ways.
105 - unfortunately, utime, chmod, chown on an open file that has just
106 been written can easily block, which caused aio_copy to block the
107 process. no more!
108 - no longer rely on dst path in aio_copy when futime is available.
109
1103.19 Tue Apr 21 22:05:21 CEST 2009
111 - more perl 5.10 workarounds for aio_read and write.
112 - aio_write no longer modifies the sv (if possible).
113 - aio_read now works correctly with magic values.
114
1153.18 Sun Apr 19 21:17:32 CEST 2009
116 - better diagnostics when some aio_* functions get passed an illegal fh.
117 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
118
1193.17 Thu Nov 20 08:45:36 CET 2008
120 - (libeio) added aio_sync_file_range (untested).
121 - add aio_busy to @IO::AIO::AIO_REQ.
122
1233.16 Wed Oct 22 18:28:01 CEST 2008
124 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
125 part to improve portability to perl 5.8 (reported by szymon).
126
1273.15 Mon Oct 13 00:39:55 CEST 2008
128 - automatic removal of feeders was broken.
129 - (libeio) use a more robust method to detect whether a feeder
130 has added something to the group or not.
131
1323.1 Thu Oct 2 13:34:40 CEST 2008
133 - pre-deref the passed callback object, for increased speed
134 and decreased memory usage.
135 - call on_next_submit callback even for aio_group - impact unknown,
136 but seems more correct.
137 - $req->cb now returns the original callback.
138 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
139 requiring a thread switch.
140 - (libeio) status code of aio_futime and aio_utime was always passed 0.
141 - do some other ยต-optimisations.
142
1433.07 Sat Aug 2 16:06:13 CEST 2008
144 - do not include LIBS in autoconf tests.
145
1463.06 Tue Jul 15 12:41:32 CEST 2008
147 - move preadwritelock definition before it's first reference,
148 to make it compile again on broken platforms (they still exist)
149 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
150
1513.05 Thu Jun 19 23:23:52 CEST 2008
152 - work around perl overriding readdir etc. with thread-unsafe
153 (sic!) versions.
154
1553.04 Wed Jun 18 01:35:38 CEST 2008
156 - (libeio) fix eio_mknod, which confused it's arguments.
157 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
158 is stupid.
159 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
160 - (libeio) fix a bug that could potentially cause IO::AIO
161 not to get initialised properly.
162
1633.03 Thu May 29 05:33:30 CEST 2008
164 - (libeio) correctly call pthread_attr_destroy ().
165 - (libeio) work around broken bsd headers once more.
166 - reduce shared library size again by not including wrappers.
167 - max_outstanding could cause poll to enter a busy-waiting loop.
168 - document the new IO::AIO::poll_cb result value.
169
1703.02 Mon May 12 02:32:02 CEST 2008
171 - fix a memory leak on aio_readlink.
172 - bring back working fchmod.
173 - nop and busy now set result to 0.
174 - set errno to ENOMEM when allocation fails.
175
1763.01 Sun May 11 03:07:03 CEST 2008
177 - (libeio) make it compile on systems without readahead or readdir_r.
178 - (libeio) improve configure check for readahead availability.
179 - do not try to link against -lrt.
180 - use a separate configure script for IO::AIO (not the libeio one).
181
1823.0 Sun May 11 00:57:14 CEST 2008
183 - added bin/treescan to the distribution.
184 - switched to using libeio.
185 - LOTS OF INCOMPATIBLE CHANGES:
186 - remove signal functionality, it is not worth the effort.
187 - max_outstanding no longer returns the previous number of requests.
188 - poll_cb no longer returns number of requests.
189
1902.62 Sat Apr 26 13:59:33 CEST 2008
191 - port to solaris perls configured for old posix
192 (analysed by Jost Krieger).
193 - keep a reference to the perl filehandle object in aio_close,
194 so it doesn't get closed prematurely, leading to ugly races.
195
1962.61 Wed Apr 16 18:45:02 CEST 2008
197 - fix treescan output duplication and improve output ordering.
198 also display files given on the commandline.
199 - use a different algorithm for aio_close that is faster
200 and probably has even lower chances of blocking.
201 - do our own stack memory management for threads - linux
202 allocates outrageous amounts of VM (not so bad unless you
203 use mlockall...), which severely limits the number of threads
204 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
205 and 4096 * sizeof (long) (usually this is 16..64k).
206
2072.6 Sun Mar 30 08:28:11 CEST 2008
208 - added aio_sync.
209 - added aio_pathsync.
210 - fix prototypes of (void) functions.
211
2122.51 Sat Oct 6 16:04:54 CEST 2007
213 - perlio isn't generally threadsafe, so aio_close could not work reliably.
214 aio_close now tries a safe hack that might not be that asynchronous
215 (see the manpage for details).
216 - discard callback return values as to not grow the stack endlessly
217 when poll_cb handles many requests without returning.
218 - minor code cleanups.
219
2202.5 Thu Oct 4 14:49:08 CEST 2007
221 - replaced _fd2fh with faster xs code.
222 - aio_close will now try to do "the right thing" and thus might
223 work sensibly for the very first time.
224
2252.41 Mon Sep 24 21:28:21 CEST 2007
226 - after fork, invest some work to make sure that the poll_fileno
227 stays stable (by dup2'ing the new fd over the old one), to make
228 it easier for programs/libs that don't control their forking
229 behaviour and cannot recreate their watchers.
230
2312.4 Sun Aug 5 18:44:22 CEST 2007
232 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
233 successfully demonstrated that you can block on futimes...).
234 - allow undef as fileoffset for aio_read/write and use read/write(2)
235 internally (useful for sockets or O_APPEND handles).
236 - allow undef for length in aio_write.
237 - negative dataoffsets work as expected now in aio_read/aio_write.
238 - use NV instead of UV for 32 bit perls and file offsets, as NVs
239 have a larger range then.
240 - shared code between BDB and IO::AIO.
241 - aio_busy was completely broken. now fixed.
242 - readahead emulation now returns something.
243 - correctly set errno to ENOSYS on unimplemented functions
244 (should never happen, though).
245 - large changes to make it partially compile and run on win32,
246 but win32 lacks too much functionality, and perl overrides way
247 too many functions with crashing versions.
248
2492.33 Tue Jan 23 23:55:41 CET 2007
250 - fix install path (Andreas J. Koenig).
251
2522.32 Mon Jan 22 16:56:23 CET 2007
253 - added aio_rmtree.
254 - wow, aio_mkdir was missing.
255 - aio_load did return undef on error, not -1.
256 - use prefixexp not prefix in autoconf.pm
257 (suggested by ... rt.cpan.org unreachable).
258 - avoid installing autoconf.pm.
259
2602.31 Sat Jan 6 03:46:02 CET 2007
261 - added aio_load.
262
2632.3 Sat Dec 23 05:48:07 CET 2006
264 - fix off-by-one bug in aio_read, causing memory corruption
265 or crashes.
266
2672.21 Fri Dec 22 05:03:38 CET 2006
268 - minor doc updates.
269 - minor cleanups.
270 - IO::AIO::poll returns request count.
271 - undocumented and unfinished async-signal-reporting.
272
2732.2 Tue Oct 31 00:31:00 CET 2006
274 - minor doc updates.
275 - added aio_readlink.
276 - properly zero-terminate aio_read buffer.
277 - fix aio_read/write with nonzero dataoffset.
278 - reduced size of aio request structure.
279 - better diagnostics when pathnames etc. are not byte-encoded;
280 do not leak request in that case, either.
281
2822.1 Sun Oct 29 02:01:57 CET 2006
283 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
284 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
285 - fix a bug in aio_move where it would fail everytime
286 it would have to copy files manually.
287 - doc updates.
288 - start threads only on (very low) demand.
289 - end superfluous threads automatically after 10s idling.
290 - add IO::AIO::max_idle to control this.
291 - some tuning applied to random places.
292 - add aio_mknod.
293
2942.0 Thu Oct 26 18:27:58 CEST 2006
295 - minor incompatibility: max_outstanding semantics have changed.
296 - major rewrite, consider all functionality EXPERIMENTAL.
297 - aio requests can be cancelled.
298 - callbacks can be (re-)set later.
299 - aio requests can choose between 9 priorities.
300 - add aio_group: aio requests can be grouped
301 into composite requests.
302 - generator interface for groups.
303 - add IO::AIO::poll_some.
304 - major documentation improvements.
305 - very minor bugfixes.
306 - add aio_nop for dummy requests.
307 - add aio_busy mainly for benchmarking and debugging.
308 - use "fast" mutexes on linux.
309 - use dynamic (and larger) buffers instead of
310 putting them onto the stack.
311 - optimise x86 and amd64 a bit.
312 - better error checking when ENOMEM.
313 - hopefully fix mem and dirp leaks on fork.
314 - warn about broken perl malloc.
315 - compiles on cygwin (but pread is broken on cygwin
316 which is not detected by autoconf, so you have to
317 edit autoconf/config.h yourself to enable emulation).
318
3191.8 Sat Jun 24 22:20:44 CEST 2006
320 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
321
3221.73 Wed Mar 1 22:49:32 CET 2006
323 - codename "jost"
324 - AIX/Solaris(?) aren't being helpful again, hardcode a value
325 for NAME_MAX and drive with your eyes closed (reported by
326 wcooley@nakedape.cc).
327
3281.72 Thu Feb 2 00:40:44 CET 2006
329 - another minor bug in aio_scandir, again, the callback was called
330 twice when the directory can't be stat'ed.
331
3321.71 Mon Dec 26 20:20:03 CET 2005
333 - grr, another minor bug in aio_scandir, this time resulting
334 in a runtime error.
335
3361.7 Mon Dec 26 19:29:48 CET 2005
337 - aio_scandir errornously called callback twice in some cases.
338 - added AnyEvent example.
339
3401.61 Wed Sep 7 19:40:42 CEST 2005
341 - no longer include $Config{libs}, as distros include too much
342 garbage in there that is not installed on typical systems
343 (for example, debian links perl against -lgdbm and many more
344 libraries despite perl not needing it, slowing down startup and
345 wasting memory).
346
3471.6 Tue Aug 30 17:44:44 CEST 2005
348 - added aio_readdir, aio_scandir.
349 - added aio_sendfile, including sendfile emulation when sendfile
350 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
351 support is unavailable on my solaris 8 machine, but preliminary
352 code is there. What's lacking is configury stuff and testing...).
353
3541.5 Sat Aug 20 02:32:19 CEST 2005
355 - create the aio threads on demand only (good after forking).
356 - somebody nagged about C89 compatibility, so this release should
357 be C89 compatible, but no guarantees for future ones.
358 - abort when the configure script fails.
359
3601.4 Wed Aug 17 08:07:27 CEST 2005
361 - forgot to recreate the pipe after forking, this could cause
362 deadlocks.
363
3641.3 Wed Aug 17 07:25:54 CEST 2005
365 - properly propagate exceptions from callbacks, instead of silently
366 eating them.
367 - use a different fork algorithm that avoids recursive callback
368 invocations and reduces fork latency in busy processes.
369 - fix a bug where the buffer scalar in aio_read got assigned the wrong
370 length after reading.
371 - fix a bug where the child would process some outstanding requests
372 from the parent.
373 - make a copy of the callback scalar, to avoid some very uncommon
374 (but valid) usages where the callback scalar changes.
375 - the callback was never freed in aio_read/aio_write.
376 - aio_read/aio_write will now set the readonly flag on the data
377 scalar for better error reporting.
378
3791.2 Wed Aug 17 01:22:58 CEST 2005
380 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
381 - use SvPVbyte for filenames now. You *need* to encode your strings to
382 the external filename encoding first.
383 - fix the bug where filehandles could leak (again).
384 - clarify freebsd situation: make it work and tell me how, or go away
385 with your underdocumented, broken and outdated OS.
386 - fork'ing should now be officially supported (where linux and
387 posix contradict each other, I followed posix).
388 - only call read() once per poll, not twice (speedup).
389 - new functions: aio_rmdir, aio_symlink.
390 - force callback arguments to be undef or a reference, for better
391 error catching.
392
3931.1 Sun Aug 7 05:27:23 CEST 2005
394 - added configure script to detect availability of some calls.
395 (imperfect, as we cannot detect things like -lrt due to missing
396 feedback yet).
397 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
398 and readahead via manual reading on platforms lacking those.
3 - ported t/03_errors.t+framework by Brad Fitzpatrick 399 - ported t/03_errors.t+framework by Brad Fitzpatrick
4 from Linux::AIO. 400 from Linux::AIO.
5 - removed XOPEN_SOURCE because stupid solaris 9 doesn't 401 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
6 compile with it enabled. Probably breaks others. Oh well. 402 compile with it enabled. Probably breaks others. Oh well.
403 - try to be more careful with errno on non-threaded perls.
404 - cygwins perl insisted on a matching open mode when morphing
405 the fd to an fh.
406 - convert sv's to "byte" encoding in aio_read/aio_write. Might
407 do that for pathnames, too, in the future, so make sure you
408 properly encode your pathnames.
7 409
81.0 Fri Jul 22 10:43:30 CEST 2005 4101.0 Fri Jul 22 10:43:30 CEST 2005
9 - aio_open did not reliably deliver (open) filehandles. 411 - aio_open did not reliably deliver (open) filehandles.
10 - all aio_*-functions keep a reference to the filehandle so 412 - all aio_*-functions keep a reference to the filehandle so
11 it doesn't go away while the aio requests is working on it. 413 it doesn't go away while the aio requests is working on it.

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