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Comparing IO-AIO/Changes (file contents):
Revision 1.41 by root, Thu Aug 18 16:32:10 2005 UTC vs.
Revision 1.302 by root, Mon Jul 30 16:44:12 2012 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
31.5 3TODO: aio_cptree/mvtree
4TODO: reduce condvar fairness: schedule hot-cache-threads first?
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?
11TODO: eio_mmap|mlock|munmap|splice...
12
13 - fix a crash in aio_fiemap, when used on ranges without any
14 extents.
15 - work around linux kernel bug (at least in 3.2): kernel might
16 trash fiemap input arguments.
17 - work around linux kernel bug (at least in 3.2): kernel does not
18 set FIEMAP_EXTENT_LAST on last segment.
19 - work around linux kernel bug (at least in 3.2): kernel silently
20 truncates segment count if a file.
21 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
22 to quick overview.
23 - splice can corrupt data.
24 - (libeio) remove pread/pwrite emulation.
25 - do not grow mmaped scalars in aio_read.
26 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
27
284.15 Tue Apr 10 06:59:00 CEST 2012
29 - always include linux/types.h for fiemap, for compatibility to
30 ancient systems (Paul Howarth).
31 - experimental support for IO::AIO::splice and ::tee (no aio_...).
32 - provide SEEK_HOLE and SEEK_DATA, if available.
33 - work around (again!) an immensely stupid bug in RHEL, defining
34 autoconf macros in linux system headers (analysed by Paul Howarth).
35
364.14 Sat Apr 7 02:45:18 CEST 2012
37 - fix stat structure usage on windows, which caused bogus stat results.
38 - (libeio) make readahead emulation behave more like actual readahead by never failing.
39 - new request aio_seek.
40 - new request aio_fiemap.
41 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
42
434.12 Fri Dec 30 08:51:25 CET 2011
44 - realpath would return a random value if the name was too long,
45 instead of -1.
46 - port to c89.
47
484.11 Mon Oct 10 00:24:11 CEST 2011
49 - libeio didn't compile on !linux (Paul Howarth).
50
514.1 Sun Oct 9 10:24:11 CEST 2011
52 - IO::AIO did access uninitialised memory on unsuccessful stats.
53 - (libeio) added syncfs syscall wrapper.
54 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
55 - (libeio) support multiple indepenent working directories.
56 - applied speling corrections by Nicholas Bamber.
57 - tune treescan #threads and #outstanding requests a bit.
58 - reduce the number of file descriptors in use at any one time
59 in treescan, to avoid running out of them (and using too much ram).
60 - take advantage of working directoriy abstractions
61 in aio_scandir and treescan.
62 - reduce compiled size by ~10% by not inlining some key functionality.
63 - added --progress switch to treescan.
64
654.0 Mon Jul 18 05:01:10 CEST 2011
66 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
67 see FORK BEHAVIOUR in manpage for details.
68 - passes testsuite on win32 now and may actually work
69 (activestate 5.10.1 / MSVC6, YMMV).
70 - (libeio) fix a deadlock where a wakeup signal could be missed when
71 a timeout occured at the same time.
72 - (libeio) added realpath.
73 - (libeio) added fallocate.
74 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
75 - (libeio) do not acquire any locks when forking.
76 - (libeio) use fewer time() syscalls when waiting for new requests.
77
783.93 Wed Jun 29 23:44:18 CEST 2011
79 - ECB.H WAS MISSING.
80
813.92 Wed Jun 29 14:45:41 CEST 2011
82 - ecb.h was missing.
83
843.91 Wed Jun 29 13:24:42 CEST 2011
85 - (libeio) work around a Linux (and likely FreeBSD and other
86 kernels) bug where sendfile would not transfer all the requested
87 bytes on large transfers, using a heuristic.
88 - buggy sendfile caused aio_move/copy to sometimes fail for big
89 files (fortunately it checks that the whole file has been
90 transferred...)
91 - use libecb for higher performance and higher portability.
92 - (libeio) disable sendfile on darwin, it's too broken.
93 - disable fork tests on !linux, as only linux supports mixing
94 pthread and fork in perl.
95 - document the fact that fork doesn't work anymore when using
96 this module, on anything !GNU/Linux.
97 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
98 run on a 0.1MHz cpu. Or so.
99
1003.9 Fri May 27 02:43:47 CEST 2011
101 - (libeio) fix memory corruption in aio_readdirx for the flags
102 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
103 - add lots of newer POSIX and GNU/Linux-specific open
104 flags.
105
1063.8 Sun Mar 27 12:25:33 CEST 2011
107 - use nonstandard but maybe-working-on-bsd fork technique.
108 - support a max_idle value of 0.
109 - support setting of idle timeout value (IO::AIO::idle_timeout).
110
1113.72 Fri Feb 11 04:25:38 CET 2011
112 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
113 - aio_mknod always used a dev_t value of 0.
114 - new treescan option: --grep.
115 - add more S_IF macros, and major/minor/makedev "macros".
116
1173.71 Thu Dec 30 08:18:46 CET 2010
118 - the numerical result value passed to callbacks did not stringify
119 correctly, due to internal reuse and failure to reset the sv flags.
120 - actually test for posix_[mf]advise, as at least uClibc defines
121 _POSIX_ADVISORY_INFO without actually having any of the required
122 funcitonality. ugh.
123
1243.7 Mon Nov 1 23:00:34 CET 2010
125 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
126 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
127 - document the sad state of affairs w.r.t. pthread on many bsds.
128 - do not enable mmap on systems without _POSIX_MAPPED_FILES
129 (openbsd 4.8).
130 - do not leak memory in IO::AIO::mmap when the scalar already
131 had string-data.
132 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
133 them.
134 - cache the result IV, for a minor speedup in the common case.
135 - croak when an mmapped-scalar changes location, to detect
136 user-errors better.
137 - fix aio_readlink prototype.
138
1393.65 Wed Mar 31 02:45:05 CEST 2010
140 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
141 cut off long pathnames in aio_readlink (based on patch by
142 Rasmus Andersson).
143 - a double fork partially killed the event pipe (great testcase
144 by dormando). affects IO::AIO, BDB and Async::Interrupt.
145 - suck steve's dick and rename our symbols to avoid colliding
146 with nonstandard identifier spam on the broken os x pseudo-os.
147 affects IO::AIO and BDB.
148
1493.6 Mon Jan 11 00:43:39 CET 2010
150 - (libeio) more fixes for the freebsd/apple sendfile - broken by
151 manpage standards, but apparently correct accoridng to actual
152 kernel sources.
153 - add IO::AIO::mmap/munmap support.
154 - add IO::AIO::m(un)lockall support.
155 - clean up manpage.
156
1573.5 Thu Jan 7 21:25:04 CET 2010
158 - (liebio) fix freebsd sendfile (Vanilla Hsu).
159 - (libeio) also fix darwin sendfile that suffered from a similar bug.
160 - add aio_statvfs as interface to statvfs/fstatvfs.
161 - work around buggy symlink() on cygwin in the testsuite.
162 - wtf. freebsd-8.0 actually passes the testsuite! I knew
163 they could implement fork and semaphores one day! cheers!
164
1653.4 Sat Jan 2 15:13:04 CET 2010
166 - (libeio) max_poll_time was not properly converted to ticks.
167 - clarify cancel_subs description.
168 - IO::AIO::sendfile did not actually return the return value
169 from the sendfile call.
170 - implement aio_msync, aio_mtouch.
171 - (libeio) tentatively support darwin in sendfile.
172
1733.31 Thu Nov 12 02:14:29 CET 2009
174 - fix result status documentation of aio_copy, aio_move.
175 - speed up object creation considerably by avoiding
176 hash lookups.
177
1783.3 Wed Aug 5 13:52:58 CEST 2009
179 - use common::sense.
180 - use common schmorp.h header.
181 - allow integers (file descriptors) in addition to file handles.
182 - take advantage of linux' eventfd (but it seems slower on smp?).
183 - use poll not select on posix platforms.
184
1853.261 Wed Jul 1 10:11:51 CEST 2009
186 - more 0S X workarounds (patch by Tokuhiro Matsuno).
187
1883.26 Tue Jun 30 09:33:26 CEST 2009
189 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
190 try to work around this horribly broken OS in a somewhat hackish
191 way. might help other os's too.
192
1933.25 Sat Jun 27 05:18:26 CEST 2009
194 - added IO::AIO::fadvise and IO::AIO::sendfile.
195 - (libeio) replaced quicksort+insertion sort by a tuned radix
196 sort + insertion sort, resulting in comparable runtime (usually
197 faster) to the old version, but without any ill side effects on
198 degenerated (for quicksort) data.
199 - (libeio) correctly sort dirs by inodes if we have perfect type
200 knowledge and DIRS_FIRST is used.
201 - (libeio) internally the wrong DT_* constants were used, but no
202 known system has differing EIO_DT_*/DT_* values, so not an issue.
203 - removed a (harmless) assert that was left over on the code
204 but should not have been.
205 - use more correct types (change IO length from IV to VAL64,
206 which makes a difference on systems without 64 bit perls).
207
2083.23 Sat Jun 13 16:57:58 CEST 2009
209 - fix off-by-one bug in aio_readdir that was introduced in the
210 rushed 3.22 release.
211
2123.22 Sat Jun 13 15:32:40 CEST 2009
213 - speed up readdirx sort algorithm slightly.
214 - bin/treescan was missing from distro tarball.
215
2163.21 Fri Jun 12 18:45:53 CEST 2009
217 - new options --dirs and --files for treescan.
218 - install bin/treescan by default.
219 - (libeio) aio_readdir can now be cancelled while executing.
220 - fix a printf format string for 64 bit systems (could lead
221 to problems on big endian 64 bit systems).
222 - do not use qsort() but our own algorithm: glibc initialises
223 the whole locale and I/O subsystem inside qsort, causing
224 a stack overflow on 32 bit machines. The new sort uses much less
225 stack and is more than twice as fast in typical situations.
226
2273.2 Sun Jun 7 20:30:05 CEST 2009
228 - (libeio) pwrite emulation was even more flawed than intended and did
229 not restore the file offset.
230 - add aio_readdirx, which can return inode and filetype and sort
231 the names in various ways.
232 - unfortunately, utime, chmod, chown on an open file that has just
233 been written can easily block, which caused aio_copy to block the
234 process. no more!
235 - no longer rely on dst path in aio_copy when futime is available.
236
2373.19 Tue Apr 21 22:05:21 CEST 2009
238 - more perl 5.10 workarounds for aio_read and write.
239 - aio_write no longer modifies the sv (if possible).
240 - aio_read now works correctly with magic values.
241
2423.18 Sun Apr 19 21:17:32 CEST 2009
243 - better diagnostics when some aio_* functions get passed an illegal fh.
244 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
245
2463.17 Thu Nov 20 08:45:36 CET 2008
247 - (libeio) added aio_sync_file_range (untested).
248 - add aio_busy to @IO::AIO::AIO_REQ.
249
2503.16 Wed Oct 22 18:28:01 CEST 2008
251 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
252 part to improve portability to perl 5.8 (reported by szymon).
253
2543.15 Mon Oct 13 00:39:55 CEST 2008
255 - automatic removal of feeders was broken.
256 - (libeio) use a more robust method to detect whether a feeder
257 has added something to the group or not.
258
2593.1 Thu Oct 2 13:34:40 CEST 2008
260 - pre-deref the passed callback object, for increased speed
261 and decreased memory usage.
262 - call on_next_submit callback even for aio_group - impact unknown,
263 but seems more correct.
264 - $req->cb now returns the original callback.
265 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
266 requiring a thread switch.
267 - (libeio) status code of aio_futime and aio_utime was always passed 0.
268 - do some other ยต-optimisations.
269
2703.07 Sat Aug 2 16:06:13 CEST 2008
271 - do not include LIBS in autoconf tests.
272
2733.06 Tue Jul 15 12:41:32 CEST 2008
274 - move preadwritelock definition before it's first reference,
275 to make it compile again on broken platforms (they still exist)
276 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
277
2783.05 Thu Jun 19 23:23:52 CEST 2008
279 - work around perl overriding readdir etc. with thread-unsafe
280 (sic!) versions.
281
2823.04 Wed Jun 18 01:35:38 CEST 2008
283 - (libeio) fix eio_mknod, which confused it's arguments.
284 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
285 is stupid.
286 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
287 - (libeio) fix a bug that could potentially cause IO::AIO
288 not to get initialised properly.
289
2903.03 Thu May 29 05:33:30 CEST 2008
291 - (libeio) correctly call pthread_attr_destroy ().
292 - (libeio) work around broken bsd headers once more.
293 - reduce shared library size again by not including wrappers.
294 - max_outstanding could cause poll to enter a busy-waiting loop.
295 - document the new IO::AIO::poll_cb result value.
296
2973.02 Mon May 12 02:32:02 CEST 2008
298 - fix a memory leak on aio_readlink.
299 - bring back working fchmod.
300 - nop and busy now set result to 0.
301 - set errno to ENOMEM when allocation fails.
302
3033.01 Sun May 11 03:07:03 CEST 2008
304 - (libeio) make it compile on systems without readahead or readdir_r.
305 - (libeio) improve configure check for readahead availability.
306 - do not try to link against -lrt.
307 - use a separate configure script for IO::AIO (not the libeio one).
308
3093.0 Sun May 11 00:57:14 CEST 2008
310 - added bin/treescan to the distribution.
311 - switched to using libeio.
312 - LOTS OF INCOMPATIBLE CHANGES:
313 - remove signal functionality, it is not worth the effort.
314 - max_outstanding no longer returns the previous number of requests.
315 - poll_cb no longer returns number of requests.
316
3172.62 Sat Apr 26 13:59:33 CEST 2008
318 - port to solaris perls configured for old posix
319 (analysed by Jost Krieger).
320 - keep a reference to the perl filehandle object in aio_close,
321 so it doesn't get closed prematurely, leading to ugly races.
322
3232.61 Wed Apr 16 18:45:02 CEST 2008
324 - fix treescan output duplication and improve output ordering.
325 also display files given on the commandline.
326 - use a different algorithm for aio_close that is faster
327 and probably has even lower chances of blocking.
328 - do our own stack memory management for threads - linux
329 allocates outrageous amounts of VM (not so bad unless you
330 use mlockall...), which severely limits the number of threads
331 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
332 and 4096 * sizeof (long) (usually this is 16..64k).
333
3342.6 Sun Mar 30 08:28:11 CEST 2008
335 - added aio_sync.
336 - added aio_pathsync.
337 - fix prototypes of (void) functions.
338
3392.51 Sat Oct 6 16:04:54 CEST 2007
340 - perlio isn't generally threadsafe, so aio_close could not work reliably.
341 aio_close now tries a safe hack that might not be that asynchronous
342 (see the manpage for details).
343 - discard callback return values as to not grow the stack endlessly
344 when poll_cb handles many requests without returning.
345 - minor code cleanups.
346
3472.5 Thu Oct 4 14:49:08 CEST 2007
348 - replaced _fd2fh with faster xs code.
349 - aio_close will now try to do "the right thing" and thus might
350 work sensibly for the very first time.
351
3522.41 Mon Sep 24 21:28:21 CEST 2007
353 - after fork, invest some work to make sure that the poll_fileno
354 stays stable (by dup2'ing the new fd over the old one), to make
355 it easier for programs/libs that don't control their forking
356 behaviour and cannot recreate their watchers.
357
3582.4 Sun Aug 5 18:44:22 CEST 2007
359 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
360 successfully demonstrated that you can block on futimes...).
361 - allow undef as fileoffset for aio_read/write and use read/write(2)
362 internally (useful for sockets or O_APPEND handles).
363 - allow undef for length in aio_write.
364 - negative dataoffsets work as expected now in aio_read/aio_write.
365 - use NV instead of UV for 32 bit perls and file offsets, as NVs
366 have a larger range then.
367 - shared code between BDB and IO::AIO.
368 - aio_busy was completely broken. now fixed.
369 - readahead emulation now returns something.
370 - correctly set errno to ENOSYS on unimplemented functions
371 (should never happen, though).
372 - large changes to make it partially compile and run on win32,
373 but win32 lacks too much functionality, and perl overrides way
374 too many functions with crashing versions.
375
3762.33 Tue Jan 23 23:55:41 CET 2007
377 - fix install path (Andreas J. Koenig).
378
3792.32 Mon Jan 22 16:56:23 CET 2007
380 - added aio_rmtree.
381 - wow, aio_mkdir was missing.
382 - aio_load did return undef on error, not -1.
383 - use prefixexp not prefix in autoconf.pm
384 (suggested by ... rt.cpan.org unreachable).
385 - avoid installing autoconf.pm.
386
3872.31 Sat Jan 6 03:46:02 CET 2007
388 - added aio_load.
389
3902.3 Sat Dec 23 05:48:07 CET 2006
391 - fix off-by-one bug in aio_read, causing memory corruption
392 or crashes.
393
3942.21 Fri Dec 22 05:03:38 CET 2006
395 - minor doc updates.
396 - minor cleanups.
397 - IO::AIO::poll returns request count.
398 - undocumented and unfinished async-signal-reporting.
399
4002.2 Tue Oct 31 00:31:00 CET 2006
401 - minor doc updates.
402 - added aio_readlink.
403 - properly zero-terminate aio_read buffer.
404 - fix aio_read/write with nonzero dataoffset.
405 - reduced size of aio request structure.
406 - better diagnostics when pathnames etc. are not byte-encoded;
407 do not leak request in that case, either.
408
4092.1 Sun Oct 29 02:01:57 CET 2006
410 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
411 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
412 - fix a bug in aio_move where it would fail everytime
413 it would have to copy files manually.
414 - doc updates.
415 - start threads only on (very low) demand.
416 - end superfluous threads automatically after 10s idling.
417 - add IO::AIO::max_idle to control this.
418 - some tuning applied to random places.
419 - add aio_mknod.
420
4212.0 Thu Oct 26 18:27:58 CEST 2006
422 - minor incompatibility: max_outstanding semantics have changed.
423 - major rewrite, consider all functionality EXPERIMENTAL.
424 - aio requests can be cancelled.
425 - callbacks can be (re-)set later.
426 - aio requests can choose between 9 priorities.
427 - add aio_group: aio requests can be grouped
428 into composite requests.
429 - generator interface for groups.
430 - add IO::AIO::poll_some.
431 - major documentation improvements.
432 - very minor bugfixes.
433 - add aio_nop for dummy requests.
434 - add aio_busy mainly for benchmarking and debugging.
435 - use "fast" mutexes on linux.
436 - use dynamic (and larger) buffers instead of
437 putting them onto the stack.
438 - optimise x86 and amd64 a bit.
439 - better error checking when ENOMEM.
440 - hopefully fix mem and dirp leaks on fork.
441 - warn about broken perl malloc.
442 - compiles on cygwin (but pread is broken on cygwin
443 which is not detected by autoconf, so you have to
444 edit autoconf/config.h yourself to enable emulation).
445
4461.8 Sat Jun 24 22:20:44 CEST 2006
447 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
448
4491.73 Wed Mar 1 22:49:32 CET 2006
450 - codename "jost"
451 - AIX/Solaris(?) aren't being helpful again, hardcode a value
452 for NAME_MAX and drive with your eyes closed (reported by
453 wcooley@nakedape.cc).
454
4551.72 Thu Feb 2 00:40:44 CET 2006
456 - another minor bug in aio_scandir, again, the callback was called
457 twice when the directory can't be stat'ed.
458
4591.71 Mon Dec 26 20:20:03 CET 2005
460 - grr, another minor bug in aio_scandir, this time resulting
461 in a runtime error.
462
4631.7 Mon Dec 26 19:29:48 CET 2005
464 - aio_scandir errornously called callback twice in some cases.
465 - added AnyEvent example.
466
4671.61 Wed Sep 7 19:40:42 CEST 2005
468 - no longer include $Config{libs}, as distros include too much
469 garbage in there that is not installed on typical systems
470 (for example, debian links perl against -lgdbm and many more
471 libraries despite perl not needing it, slowing down startup and
472 wasting memory).
473
4741.6 Tue Aug 30 17:44:44 CEST 2005
475 - added aio_readdir, aio_scandir.
476 - added aio_sendfile, including sendfile emulation when sendfile
477 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
478 support is unavailable on my solaris 8 machine, but preliminary
479 code is there. What's lacking is configury stuff and testing...).
480
4811.5 Sat Aug 20 02:32:19 CEST 2005
4 - create the aio threads on demand only. 482 - create the aio threads on demand only (good after forking).
5 - somebody nagged about C89 compatibility, so this release should 483 - somebody nagged about C89 compatibility, so this release should
6 be C89 compatible, but no guarentees for future ones. 484 be C89 compatible, but no guarantees for future ones.
485 - abort when the configure script fails.
7 486
81.4 Wed Aug 17 08:07:27 CEST 2005 4871.4 Wed Aug 17 08:07:27 CEST 2005
9 - forget to recreate the pipe after forking, this could cause 488 - forgot to recreate the pipe after forking, this could cause
10 deadlocks. 489 deadlocks.
11 490
121.3 Wed Aug 17 07:25:54 CEST 2005 4911.3 Wed Aug 17 07:25:54 CEST 2005
13 - properly propagate exceptions from callbacks, instead of silently 492 - properly propagate exceptions from callbacks, instead of silently
14 eating them. 493 eating them.

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