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Comparing IO-AIO/Changes (file contents):
Revision 1.64 by root, Mon Feb 6 23:55:48 2006 UTC vs.
Revision 1.260 by root, Wed Jun 29 11:25:17 2011 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 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.?
11TODO: MS_xxx, posix_fadvise, posix_madvise
12TODO: realpath
4 13
51.73 143.91 Wed Jun 29 13:24:42 CEST 2011
6 - AIX isn't being helpful again, hardcode a value for NAME_MAX 15 - (libeio) work around a Linux (and likely FreeBSD and other
16 kernels) bug where sendfile would not transfer all the requested
17 bytes on large transfers, using a heuristic.
18 - buggy sendfile caused aio_move/copy to sometimes fail for big
19 files (fortunately it checks that the whole file has been
20 transferred...)
21 - use libecb for higher performance and higher portability.
22 - (libeio) disable sendfile on darwin, it's too broken.
23 - disable fork tests on !linux, as only linux supports mixing
24 pthread and fork in perl.
25 - document the fact that fork doesn't work anymore when using
26 this module, on anything !GNU/Linux.
27 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
28 run on a 0.1MHz cpu. Or so.
29
303.9 Fri May 27 02:43:47 CEST 2011
31 - (libeio) fix memory corruption in aio_readdirx for the flags
32 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
33 - add lots of newre POSIX and GNU/Linux-specific open
34 flags.
35
363.8 Sun Mar 27 12:25:33 CEST 2011
37 - use nonstandard but maybe-working-on-bsd fork technique.
38 - support a max_idle value of 0.
39 - support setting of idle timeout value (IO::AIO::idle_timeout).
40
413.72 Fri Feb 11 04:25:38 CET 2011
42 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
43 - aio_mknod always used a dev_t value of 0.
44 - new treescan option: --grep.
45 - add more S_IF macros, and major/minor/makedev "macros".
46
473.71 Thu Dec 30 08:18:46 CET 2010
48 - the numerical result value passed to callbacks did not stringify
49 correctly, due to internal reuse and failure to reset the sv flags.
50 - actually test for posix_[mf]advise, as at least uClibc defines
51 _POSIX_ADVISORY_INFO without actually having any of the required
52 funcitonality. ugh.
53
543.7 Mon Nov 1 23:00:34 CET 2010
55 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
56 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
57 - document the sad state of affairs w.r.t. pthread on many bsds.
58 - do not enable mmap on systems without _POSIX_MAPPED_FILES
59 (openbsd 4.8).
60 - do not leak memory in IO::AIO::mmap when the scalar already
61 had string-data.
62 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
63 them.
64 - cache the result IV, for a minor speedup in the common case.
65 - croak when an mmapped-scalar changes location, to detect
66 user-errors better.
67 - fix aio_readlink prototype.
68
693.65 Wed Mar 31 02:45:05 CEST 2010
70 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
71 cut off long pathnames in aio_readlink (based on patch by
72 Rasmus Andersson).
73 - a double fork partially killed the event pipe (great testcase
74 by dormando). affects IO::AIO, BDB and Async::Interrupt.
75 - suck steve's dick and rename our symbols to avoid colliding
76 with nonstandard identifier spam on the broken os x pseudo-os.
77 affects IO::AIO and BDB.
78
793.6 Mon Jan 11 00:43:39 CET 2010
80 - (libeio) more fixes for the freebsd/apple sendfile - broken by
81 manpage standards, but apparently correct accoridng to actual
82 kernel sources.
83 - add IO::AIO::mmap/munmap support.
84 - add IO::AIO::m(un)lockall support.
85 - clean up manpage.
86
873.5 Thu Jan 7 21:25:04 CET 2010
88 - (liebio) fix freebsd sendfile (Vanilla Hsu).
89 - (libeio) also fix darwin sendfile that suffered from a similar bug.
90 - add aio_statvfs as interface to statvfs/fstatvfs.
91 - work around buggy symlink() on cygwin in the testsuite.
92 - wtf. freebsd-8.0 actually passes the testsuite! I knew
93 they could implement fork and semaphores one day! cheers!
94
953.4 Sat Jan 2 15:13:04 CET 2010
96 - (libeio) max_poll_time was not properly converted to ticks.
97 - clarify cancel_subs description.
98 - IO::AIO::sendfile did not actually return the return value
99 from the sendfile call.
100 - implement aio_msync, aio_mtouch.
101 - (libeio) tentatively support darwin in sendfile.
102
1033.31 Thu Nov 12 02:14:29 CET 2009
104 - fix result status documentation of aio_copy, aio_move.
105 - speed up object creation considerably by avoiding
106 hash lookups.
107
1083.3 Wed Aug 5 13:52:58 CEST 2009
109 - use common::sense.
110 - use common schmorp.h header.
111 - allow integers (file descriptors) in addition to file handles.
112 - take advantage of linux' eventfd (but it seems slower on smp?).
113 - use poll not select on posix platforms.
114
1153.261 Wed Jul 1 10:11:51 CEST 2009
116 - more 0S X workarounds (patch by Tokuhiro Matsuno).
117
1183.26 Tue Jun 30 09:33:26 CEST 2009
119 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
120 try to work around this horribly broken OS in a somewhat hackish
121 way. might help other os's too.
122
1233.25 Sat Jun 27 05:18:26 CEST 2009
124 - added IO::AIO::fadvise and IO::AIO::sendfile.
125 - (libeio) replaced quicksort+insertion sort by a tuned radix
126 sort + insertion sort, resulting in comparable runtime (usually
127 faster) to the old version, but without any ill side effects on
128 degenerated (for quicksort) data.
129 - (libeio) correctly sort dirs by inodes if we have perfect type
130 knowledge and DIRS_FIRST is used.
131 - (libeio) internally the wrong DT_* constants were used, but no
132 known system has differing EIO_DT_*/DT_* values, so not an issue.
133 - removed a (harmless) assert that was left over on the code
134 but should not have been.
135 - use more correct types (change IO length from IV to VAL64,
136 which makes a difference on systems without 64 bit perls).
137
1383.23 Sat Jun 13 16:57:58 CEST 2009
139 - fix off-by-one bug in aio_readdir that was introduced in the
140 rushed 3.22 release.
141
1423.22 Sat Jun 13 15:32:40 CEST 2009
143 - speed up readdirx sort algorithm slightly.
144 - bin/treescan was missing from distro tarball.
145
1463.21 Fri Jun 12 18:45:53 CEST 2009
147 - new options --dirs and --files for treescan.
148 - install bin/treescan by default.
149 - (libeio) aio_readdir can now be cancelled while executing.
150 - fix a printf format string for 64 bit systems (could lead
151 to problems on big endian 64 bit systems).
152 - do not use qsort() but our own algorithm: glibc initialises
153 the whole locale and I/O subsystem inside qsort, causing
154 a stack overflow on 32 bit machines. The new sort uses much less
155 stack and is more than twice as fast in typical situations.
156
1573.2 Sun Jun 7 20:30:05 CEST 2009
158 - (libeio) pwrite emulation was even more flawed than intended and did
159 not restore the file offset.
160 - add aio_readdirx, which can return inode and filetype and sort
161 the names in various ways.
162 - unfortunately, utime, chmod, chown on an open file that has just
163 been written can easily block, which caused aio_copy to block the
164 process. no more!
165 - no longer rely on dst path in aio_copy when futime is available.
166
1673.19 Tue Apr 21 22:05:21 CEST 2009
168 - more perl 5.10 workarounds for aio_read and write.
169 - aio_write no longer modifies the sv (if possible).
170 - aio_read now works correctly with magic values.
171
1723.18 Sun Apr 19 21:17:32 CEST 2009
173 - better diagnostics when some aio_* functions get passed an illegal fh.
174 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
175
1763.17 Thu Nov 20 08:45:36 CET 2008
177 - (libeio) added aio_sync_file_range (untested).
178 - add aio_busy to @IO::AIO::AIO_REQ.
179
1803.16 Wed Oct 22 18:28:01 CEST 2008
181 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
182 part to improve portability to perl 5.8 (reported by szymon).
183
1843.15 Mon Oct 13 00:39:55 CEST 2008
185 - automatic removal of feeders was broken.
186 - (libeio) use a more robust method to detect whether a feeder
187 has added something to the group or not.
188
1893.1 Thu Oct 2 13:34:40 CEST 2008
190 - pre-deref the passed callback object, for increased speed
191 and decreased memory usage.
192 - call on_next_submit callback even for aio_group - impact unknown,
193 but seems more correct.
194 - $req->cb now returns the original callback.
195 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
196 requiring a thread switch.
197 - (libeio) status code of aio_futime and aio_utime was always passed 0.
198 - do some other ยต-optimisations.
199
2003.07 Sat Aug 2 16:06:13 CEST 2008
201 - do not include LIBS in autoconf tests.
202
2033.06 Tue Jul 15 12:41:32 CEST 2008
204 - move preadwritelock definition before it's first reference,
205 to make it compile again on broken platforms (they still exist)
206 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
207
2083.05 Thu Jun 19 23:23:52 CEST 2008
209 - work around perl overriding readdir etc. with thread-unsafe
210 (sic!) versions.
211
2123.04 Wed Jun 18 01:35:38 CEST 2008
213 - (libeio) fix eio_mknod, which confused it's arguments.
214 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
215 is stupid.
216 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
217 - (libeio) fix a bug that could potentially cause IO::AIO
218 not to get initialised properly.
219
2203.03 Thu May 29 05:33:30 CEST 2008
221 - (libeio) correctly call pthread_attr_destroy ().
222 - (libeio) work around broken bsd headers once more.
223 - reduce shared library size again by not including wrappers.
224 - max_outstanding could cause poll to enter a busy-waiting loop.
225 - document the new IO::AIO::poll_cb result value.
226
2273.02 Mon May 12 02:32:02 CEST 2008
228 - fix a memory leak on aio_readlink.
229 - bring back working fchmod.
230 - nop and busy now set result to 0.
231 - set errno to ENOMEM when allocation fails.
232
2333.01 Sun May 11 03:07:03 CEST 2008
234 - (libeio) make it compile on systems without readahead or readdir_r.
235 - (libeio) improve configure check for readahead availability.
236 - do not try to link against -lrt.
237 - use a separate configure script for IO::AIO (not the libeio one).
238
2393.0 Sun May 11 00:57:14 CEST 2008
240 - added bin/treescan to the distribution.
241 - switched to using libeio.
242 - LOTS OF INCOMPATIBLE CHANGES:
243 - remove signal functionality, it is not worth the effort.
244 - max_outstanding no longer returns the previous number of requests.
245 - poll_cb no longer returns number of requests.
246
2472.62 Sat Apr 26 13:59:33 CEST 2008
248 - port to solaris perls configured for old posix
249 (analysed by Jost Krieger).
250 - keep a reference to the perl filehandle object in aio_close,
251 so it doesn't get closed prematurely, leading to ugly races.
252
2532.61 Wed Apr 16 18:45:02 CEST 2008
254 - fix treescan output duplication and improve output ordering.
255 also display files given on the commandline.
256 - use a different algorithm for aio_close that is faster
257 and probably has even lower chances of blocking.
258 - do our own stack memory management for threads - linux
259 allocates outrageous amounts of VM (not so bad unless you
260 use mlockall...), which severely limits the number of threads
261 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
262 and 4096 * sizeof (long) (usually this is 16..64k).
263
2642.6 Sun Mar 30 08:28:11 CEST 2008
265 - added aio_sync.
266 - added aio_pathsync.
267 - fix prototypes of (void) functions.
268
2692.51 Sat Oct 6 16:04:54 CEST 2007
270 - perlio isn't generally threadsafe, so aio_close could not work reliably.
271 aio_close now tries a safe hack that might not be that asynchronous
272 (see the manpage for details).
273 - discard callback return values as to not grow the stack endlessly
274 when poll_cb handles many requests without returning.
275 - minor code cleanups.
276
2772.5 Thu Oct 4 14:49:08 CEST 2007
278 - replaced _fd2fh with faster xs code.
279 - aio_close will now try to do "the right thing" and thus might
280 work sensibly for the very first time.
281
2822.41 Mon Sep 24 21:28:21 CEST 2007
283 - after fork, invest some work to make sure that the poll_fileno
284 stays stable (by dup2'ing the new fd over the old one), to make
285 it easier for programs/libs that don't control their forking
286 behaviour and cannot recreate their watchers.
287
2882.4 Sun Aug 5 18:44:22 CEST 2007
289 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
290 successfully demonstrated that you can block on futimes...).
291 - allow undef as fileoffset for aio_read/write and use read/write(2)
292 internally (useful for sockets or O_APPEND handles).
293 - allow undef for length in aio_write.
294 - negative dataoffsets work as expected now in aio_read/aio_write.
295 - use NV instead of UV for 32 bit perls and file offsets, as NVs
296 have a larger range then.
297 - shared code between BDB and IO::AIO.
298 - aio_busy was completely broken. now fixed.
299 - readahead emulation now returns something.
300 - correctly set errno to ENOSYS on unimplemented functions
301 (should never happen, though).
302 - large changes to make it partially compile and run on win32,
303 but win32 lacks too much functionality, and perl overrides way
304 too many functions with crashing versions.
305
3062.33 Tue Jan 23 23:55:41 CET 2007
307 - fix install path (Andreas J. Koenig).
308
3092.32 Mon Jan 22 16:56:23 CET 2007
310 - added aio_rmtree.
311 - wow, aio_mkdir was missing.
312 - aio_load did return undef on error, not -1.
313 - use prefixexp not prefix in autoconf.pm
314 (suggested by ... rt.cpan.org unreachable).
315 - avoid installing autoconf.pm.
316
3172.31 Sat Jan 6 03:46:02 CET 2007
318 - added aio_load.
319
3202.3 Sat Dec 23 05:48:07 CET 2006
321 - fix off-by-one bug in aio_read, causing memory corruption
322 or crashes.
323
3242.21 Fri Dec 22 05:03:38 CET 2006
325 - minor doc updates.
326 - minor cleanups.
327 - IO::AIO::poll returns request count.
328 - undocumented and unfinished async-signal-reporting.
329
3302.2 Tue Oct 31 00:31:00 CET 2006
331 - minor doc updates.
332 - added aio_readlink.
333 - properly zero-terminate aio_read buffer.
334 - fix aio_read/write with nonzero dataoffset.
335 - reduced size of aio request structure.
336 - better diagnostics when pathnames etc. are not byte-encoded;
337 do not leak request in that case, either.
338
3392.1 Sun Oct 29 02:01:57 CET 2006
340 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
341 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
342 - fix a bug in aio_move where it would fail everytime
343 it would have to copy files manually.
344 - doc updates.
345 - start threads only on (very low) demand.
346 - end superfluous threads automatically after 10s idling.
347 - add IO::AIO::max_idle to control this.
348 - some tuning applied to random places.
349 - add aio_mknod.
350
3512.0 Thu Oct 26 18:27:58 CEST 2006
352 - minor incompatibility: max_outstanding semantics have changed.
353 - major rewrite, consider all functionality EXPERIMENTAL.
354 - aio requests can be cancelled.
355 - callbacks can be (re-)set later.
356 - aio requests can choose between 9 priorities.
357 - add aio_group: aio requests can be grouped
358 into composite requests.
359 - generator interface for groups.
360 - add IO::AIO::poll_some.
361 - major documentation improvements.
362 - very minor bugfixes.
363 - add aio_nop for dummy requests.
364 - add aio_busy mainly for benchmarking and debugging.
365 - use "fast" mutexes on linux.
366 - use dynamic (and larger) buffers instead of
367 putting them onto the stack.
368 - optimise x86 and amd64 a bit.
369 - better error checking when ENOMEM.
370 - hopefully fix mem and dirp leaks on fork.
371 - warn about broken perl malloc.
372 - compiles on cygwin (but pread is broken on cygwin
373 which is not detected by autoconf, so you have to
374 edit autoconf/config.h yourself to enable emulation).
375
3761.8 Sat Jun 24 22:20:44 CEST 2006
377 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
378
3791.73 Wed Mar 1 22:49:32 CET 2006
380 - codename "jost"
381 - AIX/Solaris(?) aren't being helpful again, hardcode a value
7 and drive with your eyes closed (reported by wcooley@nakedape.cc). 382 for NAME_MAX and drive with your eyes closed (reported by
383 wcooley@nakedape.cc).
8 384
91.72 Thu Feb 2 00:40:44 CET 2006 3851.72 Thu Feb 2 00:40:44 CET 2006
10 - another minor bug in aio_scandir, again, the callback was called 386 - another minor bug in aio_scandir, again, the callback was called
11 twice when the directory can't be stat'ed. 387 twice when the directory can't be stat'ed.
12 388
37 - somebody nagged about C89 compatibility, so this release should 413 - somebody nagged about C89 compatibility, so this release should
38 be C89 compatible, but no guarantees for future ones. 414 be C89 compatible, but no guarantees for future ones.
39 - abort when the configure script fails. 415 - abort when the configure script fails.
40 416
411.4 Wed Aug 17 08:07:27 CEST 2005 4171.4 Wed Aug 17 08:07:27 CEST 2005
42 - forget to recreate the pipe after forking, this could cause 418 - forgot to recreate the pipe after forking, this could cause
43 deadlocks. 419 deadlocks.
44 420
451.3 Wed Aug 17 07:25:54 CEST 2005 4211.3 Wed Aug 17 07:25:54 CEST 2005
46 - properly propagate exceptions from callbacks, instead of silently 422 - properly propagate exceptions from callbacks, instead of silently
47 eating them. 423 eating them.

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