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Comparing IO-AIO/Changes (file contents):
Revision 1.53 by root, Tue Aug 30 15:45:10 2005 UTC vs.
Revision 1.259 by root, Wed Jun 29 11:16:37 2011 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? (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: getxattr etc.?
11
12TODO: MS_xxx, posix_fadvise, posix_madvise
13TODO: realpath
14 - (libeio) work around a Linux (and likely FreeBSD and other
15 kernels) bug where sendfile would not transfer all the requested
16 bytes on large transfers, using a heuristic.
17 - buggy sendfile caused aio_move/copy to sometimes fail for big
18 files (fortunately it vchecks that the whole file has been
19 transferred...)
20 - use libecb for higher performance and higher portability.
21 - (libeio) disable sendfile on darwin, it's too broken.
22 - disable fork tests on !linux, as only linux supports mixing
23 pthread and fork in perl.
24 - document the fact that fork doesn't work anymore when using
25 this module, on anything !GNU/Linux.
26 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
27 run on a 0.1MHz cpu. Or so.
28
293.9 Fri May 27 02:43:47 CEST 2011
30 - (libeio) fix memory corruption in aio_readdirx for the flags
31 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
32 - add lots of newre POSIX and GNU/Linux-specific open
33 flags.
34
353.8 Sun Mar 27 12:25:33 CEST 2011
36 - use nonstandard but maybe-working-on-bsd fork technique.
37 - support a max_idle value of 0.
38 - support setting of idle timeout value (IO::AIO::idle_timeout).
39
403.72 Fri Feb 11 04:25:38 CET 2011
41 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
42 - aio_mknod always used a dev_t value of 0.
43 - new treescan option: --grep.
44 - add more S_IF macros, and major/minor/makedev "macros".
45
463.71 Thu Dec 30 08:18:46 CET 2010
47 - the numerical result value passed to callbacks did not stringify
48 correctly, due to internal reuse and failure to reset the sv flags.
49 - actually test for posix_[mf]advise, as at least uClibc defines
50 _POSIX_ADVISORY_INFO without actually having any of the required
51 funcitonality. ugh.
52
533.7 Mon Nov 1 23:00:34 CET 2010
54 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
55 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
56 - document the sad state of affairs w.r.t. pthread on many bsds.
57 - do not enable mmap on systems without _POSIX_MAPPED_FILES
58 (openbsd 4.8).
59 - do not leak memory in IO::AIO::mmap when the scalar already
60 had string-data.
61 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
62 them.
63 - cache the result IV, for a minor speedup in the common case.
64 - croak when an mmapped-scalar changes location, to detect
65 user-errors better.
66 - fix aio_readlink prototype.
67
683.65 Wed Mar 31 02:45:05 CEST 2010
69 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
70 cut off long pathnames in aio_readlink (based on patch by
71 Rasmus Andersson).
72 - a double fork partially killed the event pipe (great testcase
73 by dormando). affects IO::AIO, BDB and Async::Interrupt.
74 - suck steve's dick and rename our symbols to avoid colliding
75 with nonstandard identifier spam on the broken os x pseudo-os.
76 affects IO::AIO and BDB.
77
783.6 Mon Jan 11 00:43:39 CET 2010
79 - (libeio) more fixes for the freebsd/apple sendfile - broken by
80 manpage standards, but apparently correct accoridng to actual
81 kernel sources.
82 - add IO::AIO::mmap/munmap support.
83 - add IO::AIO::m(un)lockall support.
84 - clean up manpage.
85
863.5 Thu Jan 7 21:25:04 CET 2010
87 - (liebio) fix freebsd sendfile (Vanilla Hsu).
88 - (libeio) also fix darwin sendfile that suffered from a similar bug.
89 - add aio_statvfs as interface to statvfs/fstatvfs.
90 - work around buggy symlink() on cygwin in the testsuite.
91 - wtf. freebsd-8.0 actually passes the testsuite! I knew
92 they could implement fork and semaphores one day! cheers!
93
943.4 Sat Jan 2 15:13:04 CET 2010
95 - (libeio) max_poll_time was not properly converted to ticks.
96 - clarify cancel_subs description.
97 - IO::AIO::sendfile did not actually return the return value
98 from the sendfile call.
99 - implement aio_msync, aio_mtouch.
100 - (libeio) tentatively support darwin in sendfile.
101
1023.31 Thu Nov 12 02:14:29 CET 2009
103 - fix result status documentation of aio_copy, aio_move.
104 - speed up object creation considerably by avoiding
105 hash lookups.
106
1073.3 Wed Aug 5 13:52:58 CEST 2009
108 - use common::sense.
109 - use common schmorp.h header.
110 - allow integers (file descriptors) in addition to file handles.
111 - take advantage of linux' eventfd (but it seems slower on smp?).
112 - use poll not select on posix platforms.
113
1143.261 Wed Jul 1 10:11:51 CEST 2009
115 - more 0S X workarounds (patch by Tokuhiro Matsuno).
116
1173.26 Tue Jun 30 09:33:26 CEST 2009
118 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
119 try to work around this horribly broken OS in a somewhat hackish
120 way. might help other os's too.
121
1223.25 Sat Jun 27 05:18:26 CEST 2009
123 - added IO::AIO::fadvise and IO::AIO::sendfile.
124 - (libeio) replaced quicksort+insertion sort by a tuned radix
125 sort + insertion sort, resulting in comparable runtime (usually
126 faster) to the old version, but without any ill side effects on
127 degenerated (for quicksort) data.
128 - (libeio) correctly sort dirs by inodes if we have perfect type
129 knowledge and DIRS_FIRST is used.
130 - (libeio) internally the wrong DT_* constants were used, but no
131 known system has differing EIO_DT_*/DT_* values, so not an issue.
132 - removed a (harmless) assert that was left over on the code
133 but should not have been.
134 - use more correct types (change IO length from IV to VAL64,
135 which makes a difference on systems without 64 bit perls).
136
1373.23 Sat Jun 13 16:57:58 CEST 2009
138 - fix off-by-one bug in aio_readdir that was introduced in the
139 rushed 3.22 release.
140
1413.22 Sat Jun 13 15:32:40 CEST 2009
142 - speed up readdirx sort algorithm slightly.
143 - bin/treescan was missing from distro tarball.
144
1453.21 Fri Jun 12 18:45:53 CEST 2009
146 - new options --dirs and --files for treescan.
147 - install bin/treescan by default.
148 - (libeio) aio_readdir can now be cancelled while executing.
149 - fix a printf format string for 64 bit systems (could lead
150 to problems on big endian 64 bit systems).
151 - do not use qsort() but our own algorithm: glibc initialises
152 the whole locale and I/O subsystem inside qsort, causing
153 a stack overflow on 32 bit machines. The new sort uses much less
154 stack and is more than twice as fast in typical situations.
155
1563.2 Sun Jun 7 20:30:05 CEST 2009
157 - (libeio) pwrite emulation was even more flawed than intended and did
158 not restore the file offset.
159 - add aio_readdirx, which can return inode and filetype and sort
160 the names in various ways.
161 - unfortunately, utime, chmod, chown on an open file that has just
162 been written can easily block, which caused aio_copy to block the
163 process. no more!
164 - no longer rely on dst path in aio_copy when futime is available.
165
1663.19 Tue Apr 21 22:05:21 CEST 2009
167 - more perl 5.10 workarounds for aio_read and write.
168 - aio_write no longer modifies the sv (if possible).
169 - aio_read now works correctly with magic values.
170
1713.18 Sun Apr 19 21:17:32 CEST 2009
172 - better diagnostics when some aio_* functions get passed an illegal fh.
173 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
174
1753.17 Thu Nov 20 08:45:36 CET 2008
176 - (libeio) added aio_sync_file_range (untested).
177 - add aio_busy to @IO::AIO::AIO_REQ.
178
1793.16 Wed Oct 22 18:28:01 CEST 2008
180 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
181 part to improve portability to perl 5.8 (reported by szymon).
182
1833.15 Mon Oct 13 00:39:55 CEST 2008
184 - automatic removal of feeders was broken.
185 - (libeio) use a more robust method to detect whether a feeder
186 has added something to the group or not.
187
1883.1 Thu Oct 2 13:34:40 CEST 2008
189 - pre-deref the passed callback object, for increased speed
190 and decreased memory usage.
191 - call on_next_submit callback even for aio_group - impact unknown,
192 but seems more correct.
193 - $req->cb now returns the original callback.
194 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
195 requiring a thread switch.
196 - (libeio) status code of aio_futime and aio_utime was always passed 0.
197 - do some other ยต-optimisations.
198
1993.07 Sat Aug 2 16:06:13 CEST 2008
200 - do not include LIBS in autoconf tests.
201
2023.06 Tue Jul 15 12:41:32 CEST 2008
203 - move preadwritelock definition before it's first reference,
204 to make it compile again on broken platforms (they still exist)
205 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
206
2073.05 Thu Jun 19 23:23:52 CEST 2008
208 - work around perl overriding readdir etc. with thread-unsafe
209 (sic!) versions.
210
2113.04 Wed Jun 18 01:35:38 CEST 2008
212 - (libeio) fix eio_mknod, which confused it's arguments.
213 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
214 is stupid.
215 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
216 - (libeio) fix a bug that could potentially cause IO::AIO
217 not to get initialised properly.
218
2193.03 Thu May 29 05:33:30 CEST 2008
220 - (libeio) correctly call pthread_attr_destroy ().
221 - (libeio) work around broken bsd headers once more.
222 - reduce shared library size again by not including wrappers.
223 - max_outstanding could cause poll to enter a busy-waiting loop.
224 - document the new IO::AIO::poll_cb result value.
225
2263.02 Mon May 12 02:32:02 CEST 2008
227 - fix a memory leak on aio_readlink.
228 - bring back working fchmod.
229 - nop and busy now set result to 0.
230 - set errno to ENOMEM when allocation fails.
231
2323.01 Sun May 11 03:07:03 CEST 2008
233 - (libeio) make it compile on systems without readahead or readdir_r.
234 - (libeio) improve configure check for readahead availability.
235 - do not try to link against -lrt.
236 - use a separate configure script for IO::AIO (not the libeio one).
237
2383.0 Sun May 11 00:57:14 CEST 2008
239 - added bin/treescan to the distribution.
240 - switched to using libeio.
241 - LOTS OF INCOMPATIBLE CHANGES:
242 - remove signal functionality, it is not worth the effort.
243 - max_outstanding no longer returns the previous number of requests.
244 - poll_cb no longer returns number of requests.
245
2462.62 Sat Apr 26 13:59:33 CEST 2008
247 - port to solaris perls configured for old posix
248 (analysed by Jost Krieger).
249 - keep a reference to the perl filehandle object in aio_close,
250 so it doesn't get closed prematurely, leading to ugly races.
251
2522.61 Wed Apr 16 18:45:02 CEST 2008
253 - fix treescan output duplication and improve output ordering.
254 also display files given on the commandline.
255 - use a different algorithm for aio_close that is faster
256 and probably has even lower chances of blocking.
257 - do our own stack memory management for threads - linux
258 allocates outrageous amounts of VM (not so bad unless you
259 use mlockall...), which severely limits the number of threads
260 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
261 and 4096 * sizeof (long) (usually this is 16..64k).
262
2632.6 Sun Mar 30 08:28:11 CEST 2008
264 - added aio_sync.
265 - added aio_pathsync.
266 - fix prototypes of (void) functions.
267
2682.51 Sat Oct 6 16:04:54 CEST 2007
269 - perlio isn't generally threadsafe, so aio_close could not work reliably.
270 aio_close now tries a safe hack that might not be that asynchronous
271 (see the manpage for details).
272 - discard callback return values as to not grow the stack endlessly
273 when poll_cb handles many requests without returning.
274 - minor code cleanups.
275
2762.5 Thu Oct 4 14:49:08 CEST 2007
277 - replaced _fd2fh with faster xs code.
278 - aio_close will now try to do "the right thing" and thus might
279 work sensibly for the very first time.
280
2812.41 Mon Sep 24 21:28:21 CEST 2007
282 - after fork, invest some work to make sure that the poll_fileno
283 stays stable (by dup2'ing the new fd over the old one), to make
284 it easier for programs/libs that don't control their forking
285 behaviour and cannot recreate their watchers.
286
2872.4 Sun Aug 5 18:44:22 CEST 2007
288 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
289 successfully demonstrated that you can block on futimes...).
290 - allow undef as fileoffset for aio_read/write and use read/write(2)
291 internally (useful for sockets or O_APPEND handles).
292 - allow undef for length in aio_write.
293 - negative dataoffsets work as expected now in aio_read/aio_write.
294 - use NV instead of UV for 32 bit perls and file offsets, as NVs
295 have a larger range then.
296 - shared code between BDB and IO::AIO.
297 - aio_busy was completely broken. now fixed.
298 - readahead emulation now returns something.
299 - correctly set errno to ENOSYS on unimplemented functions
300 (should never happen, though).
301 - large changes to make it partially compile and run on win32,
302 but win32 lacks too much functionality, and perl overrides way
303 too many functions with crashing versions.
304
3052.33 Tue Jan 23 23:55:41 CET 2007
306 - fix install path (Andreas J. Koenig).
307
3082.32 Mon Jan 22 16:56:23 CET 2007
309 - added aio_rmtree.
310 - wow, aio_mkdir was missing.
311 - aio_load did return undef on error, not -1.
312 - use prefixexp not prefix in autoconf.pm
313 (suggested by ... rt.cpan.org unreachable).
314 - avoid installing autoconf.pm.
315
3162.31 Sat Jan 6 03:46:02 CET 2007
317 - added aio_load.
318
3192.3 Sat Dec 23 05:48:07 CET 2006
320 - fix off-by-one bug in aio_read, causing memory corruption
321 or crashes.
322
3232.21 Fri Dec 22 05:03:38 CET 2006
324 - minor doc updates.
325 - minor cleanups.
326 - IO::AIO::poll returns request count.
327 - undocumented and unfinished async-signal-reporting.
328
3292.2 Tue Oct 31 00:31:00 CET 2006
330 - minor doc updates.
331 - added aio_readlink.
332 - properly zero-terminate aio_read buffer.
333 - fix aio_read/write with nonzero dataoffset.
334 - reduced size of aio request structure.
335 - better diagnostics when pathnames etc. are not byte-encoded;
336 do not leak request in that case, either.
337
3382.1 Sun Oct 29 02:01:57 CET 2006
339 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
340 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
341 - fix a bug in aio_move where it would fail everytime
342 it would have to copy files manually.
343 - doc updates.
344 - start threads only on (very low) demand.
345 - end superfluous threads automatically after 10s idling.
346 - add IO::AIO::max_idle to control this.
347 - some tuning applied to random places.
348 - add aio_mknod.
349
3502.0 Thu Oct 26 18:27:58 CEST 2006
351 - minor incompatibility: max_outstanding semantics have changed.
352 - major rewrite, consider all functionality EXPERIMENTAL.
353 - aio requests can be cancelled.
354 - callbacks can be (re-)set later.
355 - aio requests can choose between 9 priorities.
356 - add aio_group: aio requests can be grouped
357 into composite requests.
358 - generator interface for groups.
359 - add IO::AIO::poll_some.
360 - major documentation improvements.
361 - very minor bugfixes.
362 - add aio_nop for dummy requests.
363 - add aio_busy mainly for benchmarking and debugging.
364 - use "fast" mutexes on linux.
365 - use dynamic (and larger) buffers instead of
366 putting them onto the stack.
367 - optimise x86 and amd64 a bit.
368 - better error checking when ENOMEM.
369 - hopefully fix mem and dirp leaks on fork.
370 - warn about broken perl malloc.
371 - compiles on cygwin (but pread is broken on cygwin
372 which is not detected by autoconf, so you have to
373 edit autoconf/config.h yourself to enable emulation).
374
3751.8 Sat Jun 24 22:20:44 CEST 2006
376 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
377
3781.73 Wed Mar 1 22:49:32 CET 2006
379 - codename "jost"
380 - AIX/Solaris(?) aren't being helpful again, hardcode a value
381 for NAME_MAX and drive with your eyes closed (reported by
382 wcooley@nakedape.cc).
383
3841.72 Thu Feb 2 00:40:44 CET 2006
385 - another minor bug in aio_scandir, again, the callback was called
386 twice when the directory can't be stat'ed.
387
3881.71 Mon Dec 26 20:20:03 CET 2005
389 - grr, another minor bug in aio_scandir, this time resulting
390 in a runtime error.
391
3921.7 Mon Dec 26 19:29:48 CET 2005
393 - aio_scandir errornously called callback twice in some cases.
394 - added AnyEvent example.
395
3961.61 Wed Sep 7 19:40:42 CEST 2005
397 - no longer include $Config{libs}, as distros include too much
398 garbage in there that is not installed on typical systems
399 (for example, debian links perl against -lgdbm and many more
400 libraries despite perl not needing it, slowing down startup and
401 wasting memory).
2 402
31.6 Tue Aug 30 17:44:44 CEST 2005 4031.6 Tue Aug 30 17:44:44 CEST 2005
4 - added aio_readdir, aio_scandir. 404 - added aio_readdir, aio_scandir.
5 - added aio_sendfile, including sendfile emulation when sendfile 405 - added aio_sendfile, including sendfile emulation when sendfile
6 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev 406 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
12 - somebody nagged about C89 compatibility, so this release should 412 - somebody nagged about C89 compatibility, so this release should
13 be C89 compatible, but no guarantees for future ones. 413 be C89 compatible, but no guarantees for future ones.
14 - abort when the configure script fails. 414 - abort when the configure script fails.
15 415
161.4 Wed Aug 17 08:07:27 CEST 2005 4161.4 Wed Aug 17 08:07:27 CEST 2005
17 - forget to recreate the pipe after forking, this could cause 417 - forgot to recreate the pipe after forking, this could cause
18 deadlocks. 418 deadlocks.
19 419
201.3 Wed Aug 17 07:25:54 CEST 2005 4201.3 Wed Aug 17 07:25:54 CEST 2005
21 - properly propagate exceptions from callbacks, instead of silently 421 - properly propagate exceptions from callbacks, instead of silently
22 eating them. 422 eating them.

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