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Comparing IO-AIO/Changes (file contents):
Revision 1.77 by root, Mon Oct 23 00:50:10 2006 UTC vs.
Revision 1.293 by root, Tue Apr 10 05:01:33 2012 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: aio_cptree/mvtree
4TODO: use feeder for aio_scandir. 4TODO: reduce condvar fairness: schedule hot-cache-threads first?
5TODO: -lock/unlock, +callback/etc. 5TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
6TODO: aio_fcntl, at least for file-locking
7TODO: aio_mincore?
8TODO: getxattr etc.?
9TODO: F_DUPFD_CLOEXEC
10TODO: emulation for splice?
6 11
72.0 124.15 Tue Apr 10 06:59:00 CEST 2012
13 - always include linux/types.h for fiemap, for compatibility to
14 ancient systems (Paul Howarth).
15 - experimental support for IO::AIO::splice and ::tee (no aio_...).
16 - provide SEEK_HOLE and SEEK_DATA, if available.
17 - work around (again!) an immensely stupid bug in RHEL, defining
18 autoconf macros in linux system headers (analysed by Paul Howarth).
19
204.14 Sat Apr 7 02:45:18 CEST 2012
21 - fix stat structure usage on windows, which caused bogus stat results.
22 - (libeio) make readahead emulation behave more like actual readahead by never failing.
23 - new request aio_seek.
24 - new request aio_fiemap.
25 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
26
274.12 Fri Dec 30 08:51:25 CET 2011
28 - realpath would return a random value if the name was too long,
29 instead of -1.
30 - port to c89.
31
324.11 Mon Oct 10 00:24:11 CEST 2011
33 - libeio didn't compile on !linux (Paul Howarth).
34
354.1 Sun Oct 9 10:24:11 CEST 2011
36 - IO::AIO did access uninitialised memory on unsuccessful stats.
37 - (libeio) added syncfs syscall wrapper.
38 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
39 - (libeio) support multiple indepenent working directories.
40 - applied speling corrections by Nicholas Bamber.
41 - tune treescan #threads and #outstanding requests a bit.
42 - reduce the number of file descriptors in use at any one time
43 in treescan, to avoid running out of them (and using too much ram).
44 - take advantage of working directoriy abstractions
45 in aio_scandir and treescan.
46 - reduce compiled size by ~10% by not inlining some key functionality.
47 - added --progress switch to treescan.
48
494.0 Mon Jul 18 05:01:10 CEST 2011
50 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
51 see FORK BEHAVIOUR in manpage for details.
52 - passes testsuite on win32 now and may actually work
53 (activestate 5.10.1 / MSVC6, YMMV).
54 - (libeio) fix a deadlock where a wakeup signal could be missed when
55 a timeout occured at the same time.
56 - (libeio) added realpath.
57 - (libeio) added fallocate.
58 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
59 - (libeio) do not acquire any locks when forking.
60 - (libeio) use fewer time() syscalls when waiting for new requests.
61
623.93 Wed Jun 29 23:44:18 CEST 2011
63 - ECB.H WAS MISSING.
64
653.92 Wed Jun 29 14:45:41 CEST 2011
66 - ecb.h was missing.
67
683.91 Wed Jun 29 13:24:42 CEST 2011
69 - (libeio) work around a Linux (and likely FreeBSD and other
70 kernels) bug where sendfile would not transfer all the requested
71 bytes on large transfers, using a heuristic.
72 - buggy sendfile caused aio_move/copy to sometimes fail for big
73 files (fortunately it checks that the whole file has been
74 transferred...)
75 - use libecb for higher performance and higher portability.
76 - (libeio) disable sendfile on darwin, it's too broken.
77 - disable fork tests on !linux, as only linux supports mixing
78 pthread and fork in perl.
79 - document the fact that fork doesn't work anymore when using
80 this module, on anything !GNU/Linux.
81 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
82 run on a 0.1MHz cpu. Or so.
83
843.9 Fri May 27 02:43:47 CEST 2011
85 - (libeio) fix memory corruption in aio_readdirx for the flags
86 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
87 - add lots of newer POSIX and GNU/Linux-specific open
88 flags.
89
903.8 Sun Mar 27 12:25:33 CEST 2011
91 - use nonstandard but maybe-working-on-bsd fork technique.
92 - support a max_idle value of 0.
93 - support setting of idle timeout value (IO::AIO::idle_timeout).
94
953.72 Fri Feb 11 04:25:38 CET 2011
96 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
97 - aio_mknod always used a dev_t value of 0.
98 - new treescan option: --grep.
99 - add more S_IF macros, and major/minor/makedev "macros".
100
1013.71 Thu Dec 30 08:18:46 CET 2010
102 - the numerical result value passed to callbacks did not stringify
103 correctly, due to internal reuse and failure to reset the sv flags.
104 - actually test for posix_[mf]advise, as at least uClibc defines
105 _POSIX_ADVISORY_INFO without actually having any of the required
106 funcitonality. ugh.
107
1083.7 Mon Nov 1 23:00:34 CET 2010
109 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
110 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
111 - document the sad state of affairs w.r.t. pthread on many bsds.
112 - do not enable mmap on systems without _POSIX_MAPPED_FILES
113 (openbsd 4.8).
114 - do not leak memory in IO::AIO::mmap when the scalar already
115 had string-data.
116 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
117 them.
118 - cache the result IV, for a minor speedup in the common case.
119 - croak when an mmapped-scalar changes location, to detect
120 user-errors better.
121 - fix aio_readlink prototype.
122
1233.65 Wed Mar 31 02:45:05 CEST 2010
124 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
125 cut off long pathnames in aio_readlink (based on patch by
126 Rasmus Andersson).
127 - a double fork partially killed the event pipe (great testcase
128 by dormando). affects IO::AIO, BDB and Async::Interrupt.
129 - suck steve's dick and rename our symbols to avoid colliding
130 with nonstandard identifier spam on the broken os x pseudo-os.
131 affects IO::AIO and BDB.
132
1333.6 Mon Jan 11 00:43:39 CET 2010
134 - (libeio) more fixes for the freebsd/apple sendfile - broken by
135 manpage standards, but apparently correct accoridng to actual
136 kernel sources.
137 - add IO::AIO::mmap/munmap support.
138 - add IO::AIO::m(un)lockall support.
139 - clean up manpage.
140
1413.5 Thu Jan 7 21:25:04 CET 2010
142 - (liebio) fix freebsd sendfile (Vanilla Hsu).
143 - (libeio) also fix darwin sendfile that suffered from a similar bug.
144 - add aio_statvfs as interface to statvfs/fstatvfs.
145 - work around buggy symlink() on cygwin in the testsuite.
146 - wtf. freebsd-8.0 actually passes the testsuite! I knew
147 they could implement fork and semaphores one day! cheers!
148
1493.4 Sat Jan 2 15:13:04 CET 2010
150 - (libeio) max_poll_time was not properly converted to ticks.
151 - clarify cancel_subs description.
152 - IO::AIO::sendfile did not actually return the return value
153 from the sendfile call.
154 - implement aio_msync, aio_mtouch.
155 - (libeio) tentatively support darwin in sendfile.
156
1573.31 Thu Nov 12 02:14:29 CET 2009
158 - fix result status documentation of aio_copy, aio_move.
159 - speed up object creation considerably by avoiding
160 hash lookups.
161
1623.3 Wed Aug 5 13:52:58 CEST 2009
163 - use common::sense.
164 - use common schmorp.h header.
165 - allow integers (file descriptors) in addition to file handles.
166 - take advantage of linux' eventfd (but it seems slower on smp?).
167 - use poll not select on posix platforms.
168
1693.261 Wed Jul 1 10:11:51 CEST 2009
170 - more 0S X workarounds (patch by Tokuhiro Matsuno).
171
1723.26 Tue Jun 30 09:33:26 CEST 2009
173 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
174 try to work around this horribly broken OS in a somewhat hackish
175 way. might help other os's too.
176
1773.25 Sat Jun 27 05:18:26 CEST 2009
178 - added IO::AIO::fadvise and IO::AIO::sendfile.
179 - (libeio) replaced quicksort+insertion sort by a tuned radix
180 sort + insertion sort, resulting in comparable runtime (usually
181 faster) to the old version, but without any ill side effects on
182 degenerated (for quicksort) data.
183 - (libeio) correctly sort dirs by inodes if we have perfect type
184 knowledge and DIRS_FIRST is used.
185 - (libeio) internally the wrong DT_* constants were used, but no
186 known system has differing EIO_DT_*/DT_* values, so not an issue.
187 - removed a (harmless) assert that was left over on the code
188 but should not have been.
189 - use more correct types (change IO length from IV to VAL64,
190 which makes a difference on systems without 64 bit perls).
191
1923.23 Sat Jun 13 16:57:58 CEST 2009
193 - fix off-by-one bug in aio_readdir that was introduced in the
194 rushed 3.22 release.
195
1963.22 Sat Jun 13 15:32:40 CEST 2009
197 - speed up readdirx sort algorithm slightly.
198 - bin/treescan was missing from distro tarball.
199
2003.21 Fri Jun 12 18:45:53 CEST 2009
201 - new options --dirs and --files for treescan.
202 - install bin/treescan by default.
203 - (libeio) aio_readdir can now be cancelled while executing.
204 - fix a printf format string for 64 bit systems (could lead
205 to problems on big endian 64 bit systems).
206 - do not use qsort() but our own algorithm: glibc initialises
207 the whole locale and I/O subsystem inside qsort, causing
208 a stack overflow on 32 bit machines. The new sort uses much less
209 stack and is more than twice as fast in typical situations.
210
2113.2 Sun Jun 7 20:30:05 CEST 2009
212 - (libeio) pwrite emulation was even more flawed than intended and did
213 not restore the file offset.
214 - add aio_readdirx, which can return inode and filetype and sort
215 the names in various ways.
216 - unfortunately, utime, chmod, chown on an open file that has just
217 been written can easily block, which caused aio_copy to block the
218 process. no more!
219 - no longer rely on dst path in aio_copy when futime is available.
220
2213.19 Tue Apr 21 22:05:21 CEST 2009
222 - more perl 5.10 workarounds for aio_read and write.
223 - aio_write no longer modifies the sv (if possible).
224 - aio_read now works correctly with magic values.
225
2263.18 Sun Apr 19 21:17:32 CEST 2009
227 - better diagnostics when some aio_* functions get passed an illegal fh.
228 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
229
2303.17 Thu Nov 20 08:45:36 CET 2008
231 - (libeio) added aio_sync_file_range (untested).
232 - add aio_busy to @IO::AIO::AIO_REQ.
233
2343.16 Wed Oct 22 18:28:01 CEST 2008
235 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
236 part to improve portability to perl 5.8 (reported by szymon).
237
2383.15 Mon Oct 13 00:39:55 CEST 2008
239 - automatic removal of feeders was broken.
240 - (libeio) use a more robust method to detect whether a feeder
241 has added something to the group or not.
242
2433.1 Thu Oct 2 13:34:40 CEST 2008
244 - pre-deref the passed callback object, for increased speed
245 and decreased memory usage.
246 - call on_next_submit callback even for aio_group - impact unknown,
247 but seems more correct.
248 - $req->cb now returns the original callback.
249 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
250 requiring a thread switch.
251 - (libeio) status code of aio_futime and aio_utime was always passed 0.
252 - do some other ยต-optimisations.
253
2543.07 Sat Aug 2 16:06:13 CEST 2008
255 - do not include LIBS in autoconf tests.
256
2573.06 Tue Jul 15 12:41:32 CEST 2008
258 - move preadwritelock definition before it's first reference,
259 to make it compile again on broken platforms (they still exist)
260 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
261
2623.05 Thu Jun 19 23:23:52 CEST 2008
263 - work around perl overriding readdir etc. with thread-unsafe
264 (sic!) versions.
265
2663.04 Wed Jun 18 01:35:38 CEST 2008
267 - (libeio) fix eio_mknod, which confused it's arguments.
268 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
269 is stupid.
270 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
271 - (libeio) fix a bug that could potentially cause IO::AIO
272 not to get initialised properly.
273
2743.03 Thu May 29 05:33:30 CEST 2008
275 - (libeio) correctly call pthread_attr_destroy ().
276 - (libeio) work around broken bsd headers once more.
277 - reduce shared library size again by not including wrappers.
278 - max_outstanding could cause poll to enter a busy-waiting loop.
279 - document the new IO::AIO::poll_cb result value.
280
2813.02 Mon May 12 02:32:02 CEST 2008
282 - fix a memory leak on aio_readlink.
283 - bring back working fchmod.
284 - nop and busy now set result to 0.
285 - set errno to ENOMEM when allocation fails.
286
2873.01 Sun May 11 03:07:03 CEST 2008
288 - (libeio) make it compile on systems without readahead or readdir_r.
289 - (libeio) improve configure check for readahead availability.
290 - do not try to link against -lrt.
291 - use a separate configure script for IO::AIO (not the libeio one).
292
2933.0 Sun May 11 00:57:14 CEST 2008
294 - added bin/treescan to the distribution.
295 - switched to using libeio.
296 - LOTS OF INCOMPATIBLE CHANGES:
297 - remove signal functionality, it is not worth the effort.
298 - max_outstanding no longer returns the previous number of requests.
299 - poll_cb no longer returns number of requests.
300
3012.62 Sat Apr 26 13:59:33 CEST 2008
302 - port to solaris perls configured for old posix
303 (analysed by Jost Krieger).
304 - keep a reference to the perl filehandle object in aio_close,
305 so it doesn't get closed prematurely, leading to ugly races.
306
3072.61 Wed Apr 16 18:45:02 CEST 2008
308 - fix treescan output duplication and improve output ordering.
309 also display files given on the commandline.
310 - use a different algorithm for aio_close that is faster
311 and probably has even lower chances of blocking.
312 - do our own stack memory management for threads - linux
313 allocates outrageous amounts of VM (not so bad unless you
314 use mlockall...), which severely limits the number of threads
315 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
316 and 4096 * sizeof (long) (usually this is 16..64k).
317
3182.6 Sun Mar 30 08:28:11 CEST 2008
319 - added aio_sync.
320 - added aio_pathsync.
321 - fix prototypes of (void) functions.
322
3232.51 Sat Oct 6 16:04:54 CEST 2007
324 - perlio isn't generally threadsafe, so aio_close could not work reliably.
325 aio_close now tries a safe hack that might not be that asynchronous
326 (see the manpage for details).
327 - discard callback return values as to not grow the stack endlessly
328 when poll_cb handles many requests without returning.
329 - minor code cleanups.
330
3312.5 Thu Oct 4 14:49:08 CEST 2007
332 - replaced _fd2fh with faster xs code.
333 - aio_close will now try to do "the right thing" and thus might
334 work sensibly for the very first time.
335
3362.41 Mon Sep 24 21:28:21 CEST 2007
337 - after fork, invest some work to make sure that the poll_fileno
338 stays stable (by dup2'ing the new fd over the old one), to make
339 it easier for programs/libs that don't control their forking
340 behaviour and cannot recreate their watchers.
341
3422.4 Sun Aug 5 18:44:22 CEST 2007
343 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
344 successfully demonstrated that you can block on futimes...).
345 - allow undef as fileoffset for aio_read/write and use read/write(2)
346 internally (useful for sockets or O_APPEND handles).
347 - allow undef for length in aio_write.
348 - negative dataoffsets work as expected now in aio_read/aio_write.
349 - use NV instead of UV for 32 bit perls and file offsets, as NVs
350 have a larger range then.
351 - shared code between BDB and IO::AIO.
352 - aio_busy was completely broken. now fixed.
353 - readahead emulation now returns something.
354 - correctly set errno to ENOSYS on unimplemented functions
355 (should never happen, though).
356 - large changes to make it partially compile and run on win32,
357 but win32 lacks too much functionality, and perl overrides way
358 too many functions with crashing versions.
359
3602.33 Tue Jan 23 23:55:41 CET 2007
361 - fix install path (Andreas J. Koenig).
362
3632.32 Mon Jan 22 16:56:23 CET 2007
364 - added aio_rmtree.
365 - wow, aio_mkdir was missing.
366 - aio_load did return undef on error, not -1.
367 - use prefixexp not prefix in autoconf.pm
368 (suggested by ... rt.cpan.org unreachable).
369 - avoid installing autoconf.pm.
370
3712.31 Sat Jan 6 03:46:02 CET 2007
372 - added aio_load.
373
3742.3 Sat Dec 23 05:48:07 CET 2006
375 - fix off-by-one bug in aio_read, causing memory corruption
376 or crashes.
377
3782.21 Fri Dec 22 05:03:38 CET 2006
379 - minor doc updates.
380 - minor cleanups.
381 - IO::AIO::poll returns request count.
382 - undocumented and unfinished async-signal-reporting.
383
3842.2 Tue Oct 31 00:31:00 CET 2006
385 - minor doc updates.
386 - added aio_readlink.
387 - properly zero-terminate aio_read buffer.
388 - fix aio_read/write with nonzero dataoffset.
389 - reduced size of aio request structure.
390 - better diagnostics when pathnames etc. are not byte-encoded;
391 do not leak request in that case, either.
392
3932.1 Sun Oct 29 02:01:57 CET 2006
394 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
395 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
396 - fix a bug in aio_move where it would fail everytime
397 it would have to copy files manually.
398 - doc updates.
399 - start threads only on (very low) demand.
400 - end superfluous threads automatically after 10s idling.
401 - add IO::AIO::max_idle to control this.
402 - some tuning applied to random places.
403 - add aio_mknod.
404
4052.0 Thu Oct 26 18:27:58 CEST 2006
406 - minor incompatibility: max_outstanding semantics have changed.
407 - major rewrite, consider all functionality EXPERIMENTAL.
8 - aio requests can be cancelled. 408 - aio requests can be cancelled.
409 - callbacks can be (re-)set later.
410 - aio requests can choose between 9 priorities.
9 - add aio_group: aio requests can be grouped. 411 - add aio_group: aio requests can be grouped
412 into composite requests.
10 - implement generator interface for groups. 413 - generator interface for groups.
414 - add IO::AIO::poll_some.
11 - major documentation improvements. 415 - major documentation improvements.
12 - very minor bugfixes. 416 - very minor bugfixes.
13 - add aio_nop for dummy requests. 417 - add aio_nop for dummy requests.
14 - add aio_sleep mainly for benchmarking and debugging. 418 - add aio_busy mainly for benchmarking and debugging.
15 - deprecated max_outstanding. 419 - use "fast" mutexes on linux.
420 - use dynamic (and larger) buffers instead of
421 putting them onto the stack.
422 - optimise x86 and amd64 a bit.
423 - better error checking when ENOMEM.
424 - hopefully fix mem and dirp leaks on fork.
425 - warn about broken perl malloc.
426 - compiles on cygwin (but pread is broken on cygwin
427 which is not detected by autoconf, so you have to
428 edit autoconf/config.h yourself to enable emulation).
16 429
171.8 Sat Jun 24 22:20:44 CEST 2006 4301.8 Sat Jun 24 22:20:44 CEST 2006
18 - add and/or document aio_rename, aio_link, aio_symlink and aio_move. 431 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
19 432
201.73 Wed Mar 1 22:49:32 CET 2006 4331.73 Wed Mar 1 22:49:32 CET 2006
… …
54 - somebody nagged about C89 compatibility, so this release should 467 - somebody nagged about C89 compatibility, so this release should
55 be C89 compatible, but no guarantees for future ones. 468 be C89 compatible, but no guarantees for future ones.
56 - abort when the configure script fails. 469 - abort when the configure script fails.
57 470
581.4 Wed Aug 17 08:07:27 CEST 2005 4711.4 Wed Aug 17 08:07:27 CEST 2005
59 - forget to recreate the pipe after forking, this could cause 472 - forgot to recreate the pipe after forking, this could cause
60 deadlocks. 473 deadlocks.
61 474
621.3 Wed Aug 17 07:25:54 CEST 2005 4751.3 Wed Aug 17 07:25:54 CEST 2005
63 - properly propagate exceptions from callbacks, instead of silently 476 - properly propagate exceptions from callbacks, instead of silently
64 eating them. 477 eating them.

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