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Comparing IO-AIO/Changes (file contents):
Revision 1.29 by root, Sun Aug 7 03:27:48 2005 UTC vs.
Revision 1.372 by root, Sun Aug 26 03:17:35 2018 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2
3TODO: scandir - some dirs mostly contain subdirs - invert logic?
4TODO: aio_cptree/mvtree
5TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
6TODO: getxattr, setxattr, listxattr, removexattr etc.?
7TODO: emulation for splice?
8TODO: syncfs/sync windows:
9TODO: posix_fallocate when flags=0
10http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888
11http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx
12http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx
13http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx
14http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx
15http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx
16http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
17http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
18TODO: extra socket/tcp constants &c?
19TODO: http://lwn.net/Articles/593918/ SHMEM_SET_SEALS, SHMEM_GET_SEALS, SEAL_SHRINK, SEAL_GROW, SEAL_WRITE, int memfd_create(const char *name, u64 size, u64 flags);, MFD_CLOEXEC, int fd = open("/tmp", O_RDWR | O_TMPFILE | O_EXCL, S_IRWXU);
20TODO: name_to_handle_At + open_by_handle_at = clone fds
21TODO: lchown
22TODO: mount/umount2/MS_* flags
23
24TODO: rewrite rmtree et al. to support working directories (also speed them up)
25TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
26TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611)
27 http://www.openwall.com/lists/musl/2013/02/23/4
28TODO: maybe copy some hacks from PerlIOStdio_invalidate_fileno for faster close on certain platforms
29TODO: copy_file_range, copy_file_range
30TODO: FIDEDUPERANGE, file_ioctl.c
31TODO: mincore
32TODO: SOCK_CLOEXEc etc.
33TODO: unlinkat flags, linkat flags, statat, renameat2 flags
34TODO: https://kernelnewbies.org/Linux_4.11
35TODO: define useful rules for [[$wd, $path], $path] &c and implement them
36TODO: https://github.com/coreutils/coreutils/blob/master/src/stat.c maybe IO::AIO::FSID
37TODO: mlock2, MLOCK_ONFAULT
38TODO: dup3, pipe2, accept4
39TODO: dump config.log when automated testign and configure fails
40TODO: ns time resolution in utime
41
424.6 Sat Aug 25 21:58:36 CEST 2018
43 - add st_btime, st_btimesec, st_btimensec and st_gen accessors,
44 mostly for bsds which expose birthtime and st_gen members (netbsd, freebsd
45 but only st_gen on openbsd because they compiled their perl without support
46 for birthtimes).
47 - fix madvise and munlock to properly support negative offsets.
48 - allocate fd for the aio_close at boot time, to guarantee it working
49 later, rather than calling abort when it fails. also avoids
50 close-on-exec race issues after module load.
51 - #undef utime on win32, maybe this helps some reports of utime hangs.
52 - minor doc improvements.
53 - minor configure cleanups.
54 - use $Config{perllibs} instead of libs for configure. might help people
55 who didn'T install all perl dependencies (might break things as well).
56
574.54 Tue Aug 14 13:54:48 CEST 2018
58 - include sys/mkdev.h or sys/sysmacros.h if available.
59 - further tweaks to configure invocation for systems requiring --rpath.
60 - no longer rely on custom paths on win32 platforms.
61 - try to work around buggy PAGESIZE macro on solaris.
62
634.53 Tue Aug 14 11:27:50 CEST 2018
64 - add $Config{libs} to LIBS for configure, to work around systems
65 with broken library dependencies (... openbsd).
66
674.52 Sun Aug 12 08:09:45 CEST 2018
68 - config.h.in was missing in distribution.
69
704.51 Sun Aug 12 07:24:14 CEST 2018
71 - complete rework of the autoconf framework: IO::AIO now uses its own
72 config.h, separate from libeio, and tries to test the actual perl
73 environment, not the standard system environment.
74 - provide nanosecond-accracy stat time accessors for both perl and IO::AIO
75 stat functions.
76 - removed non-portable C++ syntax from eio.c.
77 - try to fix readdir tests on cygwin spuriously failing.
78
794.5 Wed Aug 1 00:23:55 CEST 2018
80 - aio_mtouch touch all pages as requested, not just the first page in most cases.
81 - new function: IO::AIO::mremap, linux-specific mremap, with constants MREMAP_MAYMOVE
82 and MREMAP_FIXED.
83 - add O_ACCMODE.
84 - add (undocumented) MSG_CMSG_CLOEXEC and SOCK_CLOEXEC constants.
85
864.4 Tue Feb 20 07:54:12 CET 2018
87 - new aio_slurp request.
88 - add (experimental) IO::AIO::eventfd and timerfd* function.
89 - add (experimental) IO::AIO::get_fdlimit and IO::AIO::min_fdlimit.
90 - point out that aio_copy overwrites existing files.
91 - removed filesystem magic number table from aio_statvfs docs as
92 statvfs doesn't actually return this info at all (statfs does).
93 - add a bunch of (mostly linux-specific) constants for use in ioctls
94 (see aio_ioctl docs).
95 - treescan now has a proper manpage and useful --help output.
96 - new option --sync in treescan, to sync everything in a subtree.
97 - changed default for aio_msync flags to MSYNC_SYNC.
98 - document offset/length behaviour of mprotect/madvise.
99 - support linux's renameat2 (via aio_rename2).
100 - add aio_rename2, an aio_rename with flags.
101 - add F_DUPPFD_CLOEXEC, F_OFD_[SG]ETLKW? constants.
102 - add FALLOC_FL_INSERT_RANGE, FALLOC_FL_UNSHARE_RANGE.
103 - (libeio) use posix_close if available.
104 - (libeio) internal close() calls no longer disturb errno.
105 - add IO:AIO::FALLOC_FL_UNSHARE.
106 - update schmorp.h for removal of USE_SOCKETS_AS_HANDLES
107 and better eventfd detection.
108
1094.34 Sun May 1 19:18:24 CEST 2016
110 - def0.h was not properly generated during previous release, causing
111 compile errors on various platforms.
112 - major/minor were accidentally switched (reported by Alexander Lishenyuk).
113 - removed duplicate definition of MAP_HUGETLB, that was found due to
114 a bug in Perl::Tidy (testcase by alaska332@gmail.com).
115 - added (untested!) aio_fcntl, aio_ioctl requests.
116 - (libeio) names set via prctl are truncated to 15 chars + nul, not 16,
117 as manpages-dev originally claimed.
118
1194.33 Mon Jan 18 12:50:10 CET 2016
120 - add IO::AIO::pipe2 function.
121 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
122 constants.
123 - added support for O_TMPFILE and O_PATH constants.
124 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
125 consdtants, whether they can be sensibly used or not.
126 - use NO_INIT where applicable.
127 - update libecb.
128 - added stability canary support.
129 - updated linux super magic table to 4.3.3.
130
1314.32 Wed Feb 11 20:32:11 CET 2015
132 - replace off_t by STRLEN where appropriate, should not result in
133 user-visible changes.
134 - update ecb.h for C11 compatibility.
135
1364.31 Tue Jun 3 03:29:27 CEST 2014
137 - work around more 5.20 bugs. backwards compatibility my ass.
138
1394.3 Fri Apr 11 06:22:38 CEST 2014
140 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
141 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
142 in 5.18. What's so attractive about giving a shit about backwards
143 compatibility - I will never understand.
144
1454.2 Sat Jan 25 01:13:14 CET 2014
146 - aio_group could corrupt memory because it didn't restore
147 the stack after req_submit.
148 - be more careful on (e.g. permission) errors in bin/treescan.
149 - work around changes in ExtUtils::MakeMaker.
150 - (libeio) implement aio_realpath for win32.
151 - (xthread) work around compile time bugs in ptw32.
152 - added IO::AIO::pipesize.
153 - (libecb) insignificant update.
154
1554.19 Sun Jan 6 12:47:26 CET 2013
156 - avoid endless loop in fiemap with some XFS files.
157 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
158 and call rename/rmdir instead of renameat/unlinkat.
159
1604.18 Thu Oct 11 07:01:26 CEST 2012
161 - fix unintended xthread_create by intentionalising it :)
162
1634.17 Thu Oct 11 05:19:47 CEST 2012
164 - rename aio_fallocate to aio_allocate, to match documentation.
165 - add list of linux fsid values to aio_statvfs docs.
166 - work around a bug in btrfs' FIEMAP ioctl implementation.
167 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
168 as per unix spec.
169
1704.16 Tue Aug 14 05:39:03 CEST 2012
171 - aio_statvfs was wromgly marked for wd emulation, causing
172 it to malfunction for paths.
173 - fix a crash in aio_fiemap, when used on ranges without any
174 extents.
175 - work around linux kernel bug (at least in 3.2): kernel might
176 trash fiemap input arguments.
177 - work around linux kernel bug (at least in 3.2): kernel does not
178 set FIEMAP_EXTENT_LAST on last segment.
179 - work around linux kernel bug (at least in 3.2): kernel silently
180 truncates segment count if a file.
181 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
182 to quick overview.
183 - splice can corrupt data.
184 - (libeio) remove pread/pwrite emulation.
185 - do not grow mmaped scalars in aio_read.
186 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
187 - provide pread/pwrite for win32, making it link again on native win32.
188
1894.15 Tue Apr 10 06:59:00 CEST 2012
190 - always include linux/types.h for fiemap, for compatibility to
191 ancient systems (Paul Howarth).
192 - experimental support for IO::AIO::splice and ::tee (no aio_...).
193 - provide SEEK_HOLE and SEEK_DATA, if available.
194 - work around (again!) an immensely stupid bug in RHEL, defining
195 autoconf macros in linux system headers (analysed by Paul Howarth).
196
1974.14 Sat Apr 7 02:45:18 CEST 2012
198 - fix stat structure usage on windows, which caused bogus stat results.
199 - (libeio) make readahead emulation behave more like actual readahead by never failing.
200 - new request aio_seek.
201 - new request aio_fiemap.
202 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
203
2044.12 Fri Dec 30 08:51:25 CET 2011
205 - realpath would return a random value if the name was too long,
206 instead of -1.
207 - port to c89.
208
2094.11 Mon Oct 10 00:24:11 CEST 2011
210 - libeio didn't compile on !linux (Paul Howarth).
211
2124.1 Sun Oct 9 10:24:11 CEST 2011
213 - IO::AIO did access uninitialised memory on unsuccessful stats.
214 - (libeio) added syncfs syscall wrapper.
215 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
216 - (libeio) support multiple indepenent working directories.
217 - applied speling corrections by Nicholas Bamber.
218 - tune treescan #threads and #outstanding requests a bit.
219 - reduce the number of file descriptors in use at any one time
220 in treescan, to avoid running out of them (and using too much ram).
221 - take advantage of working directoriy abstractions
222 in aio_scandir and treescan.
223 - reduce compiled size by ~10% by not inlining some key functionality.
224 - added --progress switch to treescan.
225
2264.0 Mon Jul 18 05:01:10 CEST 2011
227 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
228 see FORK BEHAVIOUR in manpage for details.
229 - passes testsuite on win32 now and may actually work
230 (activestate 5.10.1 / MSVC6, YMMV).
231 - (libeio) fix a deadlock where a wakeup signal could be missed when
232 a timeout occured at the same time.
233 - (libeio) added realpath.
234 - (libeio) added fallocate.
235 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
236 - (libeio) do not acquire any locks when forking.
237 - (libeio) use fewer time() syscalls when waiting for new requests.
238
2393.93 Wed Jun 29 23:44:18 CEST 2011
240 - ECB.H WAS MISSING.
241
2423.92 Wed Jun 29 14:45:41 CEST 2011
243 - ecb.h was missing.
244
2453.91 Wed Jun 29 13:24:42 CEST 2011
246 - (libeio) work around a Linux (and likely FreeBSD and other
247 kernels) bug where sendfile would not transfer all the requested
248 bytes on large transfers, using a heuristic.
249 - buggy sendfile caused aio_move/copy to sometimes fail for big
250 files (fortunately it checks that the whole file has been
251 transferred...)
252 - use libecb for higher performance and higher portability.
253 - (libeio) disable sendfile on darwin, it's too broken.
254 - disable fork tests on !linux, as only linux supports mixing
255 pthread and fork in perl.
256 - document the fact that fork doesn't work anymore when using
257 this module, on anything !GNU/Linux.
258 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
259 run on a 0.1MHz cpu. Or so.
260
2613.9 Fri May 27 02:43:47 CEST 2011
262 - (libeio) fix memory corruption in aio_readdirx for the flags
263 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
264 - add lots of newer POSIX and GNU/Linux-specific open
265 flags.
266
2673.8 Sun Mar 27 12:25:33 CEST 2011
268 - use nonstandard but maybe-working-on-bsd fork technique.
269 - support a max_idle value of 0.
270 - support setting of idle timeout value (IO::AIO::idle_timeout).
271
2723.72 Fri Feb 11 04:25:38 CET 2011
273 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
274 - aio_mknod always used a dev_t value of 0.
275 - new treescan option: --grep.
276 - add more S_IF macros, and major/minor/makedev "macros".
277
2783.71 Thu Dec 30 08:18:46 CET 2010
279 - the numerical result value passed to callbacks did not stringify
280 correctly, due to internal reuse and failure to reset the sv flags.
281 - actually test for posix_[mf]advise, as at least uClibc defines
282 _POSIX_ADVISORY_INFO without actually having any of the required
283 funcitonality. ugh.
284
2853.7 Mon Nov 1 23:00:34 CET 2010
286 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
287 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
288 - document the sad state of affairs w.r.t. pthread on many bsds.
289 - do not enable mmap on systems without _POSIX_MAPPED_FILES
290 (openbsd 4.8).
291 - do not leak memory in IO::AIO::mmap when the scalar already
292 had string-data.
293 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
294 them.
295 - cache the result IV, for a minor speedup in the common case.
296 - croak when an mmapped-scalar changes location, to detect
297 user-errors better.
298 - fix aio_readlink prototype.
299
3003.65 Wed Mar 31 02:45:05 CEST 2010
301 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
302 cut off long pathnames in aio_readlink (based on patch by
303 Rasmus Andersson).
304 - a double fork partially killed the event pipe (great testcase
305 by dormando). affects IO::AIO, BDB and Async::Interrupt.
306 - suck steve's dick and rename our symbols to avoid colliding
307 with nonstandard identifier spam on the broken os x pseudo-os.
308 affects IO::AIO and BDB.
309
3103.6 Mon Jan 11 00:43:39 CET 2010
311 - (libeio) more fixes for the freebsd/apple sendfile - broken by
312 manpage standards, but apparently correct accoridng to actual
313 kernel sources.
314 - add IO::AIO::mmap/munmap support.
315 - add IO::AIO::m(un)lockall support.
316 - clean up manpage.
317
3183.5 Thu Jan 7 21:25:04 CET 2010
319 - (liebio) fix freebsd sendfile (Vanilla Hsu).
320 - (libeio) also fix darwin sendfile that suffered from a similar bug.
321 - add aio_statvfs as interface to statvfs/fstatvfs.
322 - work around buggy symlink() on cygwin in the testsuite.
323 - wtf. freebsd-8.0 actually passes the testsuite! I knew
324 they could implement fork and semaphores one day! cheers!
325
3263.4 Sat Jan 2 15:13:04 CET 2010
327 - (libeio) max_poll_time was not properly converted to ticks.
328 - clarify cancel_subs description.
329 - IO::AIO::sendfile did not actually return the return value
330 from the sendfile call.
331 - implement aio_msync, aio_mtouch.
332 - (libeio) tentatively support darwin in sendfile.
333
3343.31 Thu Nov 12 02:14:29 CET 2009
335 - fix result status documentation of aio_copy, aio_move.
336 - speed up object creation considerably by avoiding
337 hash lookups.
338
3393.3 Wed Aug 5 13:52:58 CEST 2009
340 - use common::sense.
341 - use common schmorp.h header.
342 - allow integers (file descriptors) in addition to file handles.
343 - take advantage of linux' eventfd (but it seems slower on smp?).
344 - use poll not select on posix platforms.
345
3463.261 Wed Jul 1 10:11:51 CEST 2009
347 - more 0S X workarounds (patch by Tokuhiro Matsuno).
348
3493.26 Tue Jun 30 09:33:26 CEST 2009
350 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
351 try to work around this horribly broken OS in a somewhat hackish
352 way. might help other os's too.
353
3543.25 Sat Jun 27 05:18:26 CEST 2009
355 - added IO::AIO::fadvise and IO::AIO::sendfile.
356 - (libeio) replaced quicksort+insertion sort by a tuned radix
357 sort + insertion sort, resulting in comparable runtime (usually
358 faster) to the old version, but without any ill side effects on
359 degenerated (for quicksort) data.
360 - (libeio) correctly sort dirs by inodes if we have perfect type
361 knowledge and DIRS_FIRST is used.
362 - (libeio) internally the wrong DT_* constants were used, but no
363 known system has differing EIO_DT_*/DT_* values, so not an issue.
364 - removed a (harmless) assert that was left over on the code
365 but should not have been.
366 - use more correct types (change IO length from IV to VAL64,
367 which makes a difference on systems without 64 bit perls).
368
3693.23 Sat Jun 13 16:57:58 CEST 2009
370 - fix off-by-one bug in aio_readdir that was introduced in the
371 rushed 3.22 release.
372
3733.22 Sat Jun 13 15:32:40 CEST 2009
374 - speed up readdirx sort algorithm slightly.
375 - bin/treescan was missing from distro tarball.
376
3773.21 Fri Jun 12 18:45:53 CEST 2009
378 - new options --dirs and --files for treescan.
379 - install bin/treescan by default.
380 - (libeio) aio_readdir can now be cancelled while executing.
381 - fix a printf format string for 64 bit systems (could lead
382 to problems on big endian 64 bit systems).
383 - do not use qsort() but our own algorithm: glibc initialises
384 the whole locale and I/O subsystem inside qsort, causing
385 a stack overflow on 32 bit machines. The new sort uses much less
386 stack and is more than twice as fast in typical situations.
387
3883.2 Sun Jun 7 20:30:05 CEST 2009
389 - (libeio) pwrite emulation was even more flawed than intended and did
390 not restore the file offset.
391 - add aio_readdirx, which can return inode and filetype and sort
392 the names in various ways.
393 - unfortunately, utime, chmod, chown on an open file that has just
394 been written can easily block, which caused aio_copy to block the
395 process. no more!
396 - no longer rely on dst path in aio_copy when futime is available.
397
3983.19 Tue Apr 21 22:05:21 CEST 2009
399 - more perl 5.10 workarounds for aio_read and write.
400 - aio_write no longer modifies the sv (if possible).
401 - aio_read now works correctly with magic values.
402
4033.18 Sun Apr 19 21:17:32 CEST 2009
404 - better diagnostics when some aio_* functions get passed an illegal fh.
405 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
406
4073.17 Thu Nov 20 08:45:36 CET 2008
408 - (libeio) added aio_sync_file_range (untested).
409 - add aio_busy to @IO::AIO::AIO_REQ.
410
4113.16 Wed Oct 22 18:28:01 CEST 2008
412 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
413 part to improve portability to perl 5.8 (reported by szymon).
414
4153.15 Mon Oct 13 00:39:55 CEST 2008
416 - automatic removal of feeders was broken.
417 - (libeio) use a more robust method to detect whether a feeder
418 has added something to the group or not.
419
4203.1 Thu Oct 2 13:34:40 CEST 2008
421 - pre-deref the passed callback object, for increased speed
422 and decreased memory usage.
423 - call on_next_submit callback even for aio_group - impact unknown,
424 but seems more correct.
425 - $req->cb now returns the original callback.
426 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
427 requiring a thread switch.
428 - (libeio) status code of aio_futime and aio_utime was always passed 0.
429 - do some other ยต-optimisations.
430
4313.07 Sat Aug 2 16:06:13 CEST 2008
432 - do not include LIBS in autoconf tests.
433
4343.06 Tue Jul 15 12:41:32 CEST 2008
435 - move preadwritelock definition before it's first reference,
436 to make it compile again on broken platforms (they still exist)
437 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
438
4393.05 Thu Jun 19 23:23:52 CEST 2008
440 - work around perl overriding readdir etc. with thread-unsafe
441 (sic!) versions.
442
4433.04 Wed Jun 18 01:35:38 CEST 2008
444 - (libeio) fix eio_mknod, which confused it's arguments.
445 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
446 is stupid.
447 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
448 - (libeio) fix a bug that could potentially cause IO::AIO
449 not to get initialised properly.
450
4513.03 Thu May 29 05:33:30 CEST 2008
452 - (libeio) correctly call pthread_attr_destroy ().
453 - (libeio) work around broken bsd headers once more.
454 - reduce shared library size again by not including wrappers.
455 - max_outstanding could cause poll to enter a busy-waiting loop.
456 - document the new IO::AIO::poll_cb result value.
457
4583.02 Mon May 12 02:32:02 CEST 2008
459 - fix a memory leak on aio_readlink.
460 - bring back working fchmod.
461 - nop and busy now set result to 0.
462 - set errno to ENOMEM when allocation fails.
463
4643.01 Sun May 11 03:07:03 CEST 2008
465 - (libeio) make it compile on systems without readahead or readdir_r.
466 - (libeio) improve configure check for readahead availability.
467 - do not try to link against -lrt.
468 - use a separate configure script for IO::AIO (not the libeio one).
469
4703.0 Sun May 11 00:57:14 CEST 2008
471 - added bin/treescan to the distribution.
472 - switched to using libeio.
473 - LOTS OF INCOMPATIBLE CHANGES:
474 - remove signal functionality, it is not worth the effort.
475 - max_outstanding no longer returns the previous number of requests.
476 - poll_cb no longer returns number of requests.
477
4782.62 Sat Apr 26 13:59:33 CEST 2008
479 - port to solaris perls configured for old posix
480 (analysed by Jost Krieger).
481 - keep a reference to the perl filehandle object in aio_close,
482 so it doesn't get closed prematurely, leading to ugly races.
483
4842.61 Wed Apr 16 18:45:02 CEST 2008
485 - fix treescan output duplication and improve output ordering.
486 also display files given on the commandline.
487 - use a different algorithm for aio_close that is faster
488 and probably has even lower chances of blocking.
489 - do our own stack memory management for threads - linux
490 allocates outrageous amounts of VM (not so bad unless you
491 use mlockall...), which severely limits the number of threads
492 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
493 and 4096 * sizeof (long) (usually this is 16..64k).
494
4952.6 Sun Mar 30 08:28:11 CEST 2008
496 - added aio_sync.
497 - added aio_pathsync.
498 - fix prototypes of (void) functions.
499
5002.51 Sat Oct 6 16:04:54 CEST 2007
501 - perlio isn't generally threadsafe, so aio_close could not work reliably.
502 aio_close now tries a safe hack that might not be that asynchronous
503 (see the manpage for details).
504 - discard callback return values as to not grow the stack endlessly
505 when poll_cb handles many requests without returning.
506 - minor code cleanups.
507
5082.5 Thu Oct 4 14:49:08 CEST 2007
509 - replaced _fd2fh with faster xs code.
510 - aio_close will now try to do "the right thing" and thus might
511 work sensibly for the very first time.
512
5132.41 Mon Sep 24 21:28:21 CEST 2007
514 - after fork, invest some work to make sure that the poll_fileno
515 stays stable (by dup2'ing the new fd over the old one), to make
516 it easier for programs/libs that don't control their forking
517 behaviour and cannot recreate their watchers.
518
5192.4 Sun Aug 5 18:44:22 CEST 2007
520 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
521 successfully demonstrated that you can block on futimes...).
522 - allow undef as fileoffset for aio_read/write and use read/write(2)
523 internally (useful for sockets or O_APPEND handles).
524 - allow undef for length in aio_write.
525 - negative dataoffsets work as expected now in aio_read/aio_write.
526 - use NV instead of UV for 32 bit perls and file offsets, as NVs
527 have a larger range then.
528 - shared code between BDB and IO::AIO.
529 - aio_busy was completely broken. now fixed.
530 - readahead emulation now returns something.
531 - correctly set errno to ENOSYS on unimplemented functions
532 (should never happen, though).
533 - large changes to make it partially compile and run on win32,
534 but win32 lacks too much functionality, and perl overrides way
535 too many functions with crashing versions.
536
5372.33 Tue Jan 23 23:55:41 CET 2007
538 - fix install path (Andreas J. Koenig).
539
5402.32 Mon Jan 22 16:56:23 CET 2007
541 - added aio_rmtree.
542 - wow, aio_mkdir was missing.
543 - aio_load did return undef on error, not -1.
544 - use prefixexp not prefix in autoconf.pm
545 (suggested by ... rt.cpan.org unreachable).
546 - avoid installing autoconf.pm.
547
5482.31 Sat Jan 6 03:46:02 CET 2007
549 - added aio_load.
550
5512.3 Sat Dec 23 05:48:07 CET 2006
552 - fix off-by-one bug in aio_read, causing memory corruption
553 or crashes.
554
5552.21 Fri Dec 22 05:03:38 CET 2006
556 - minor doc updates.
557 - minor cleanups.
558 - IO::AIO::poll returns request count.
559 - undocumented and unfinished async-signal-reporting.
560
5612.2 Tue Oct 31 00:31:00 CET 2006
562 - minor doc updates.
563 - added aio_readlink.
564 - properly zero-terminate aio_read buffer.
565 - fix aio_read/write with nonzero dataoffset.
566 - reduced size of aio request structure.
567 - better diagnostics when pathnames etc. are not byte-encoded;
568 do not leak request in that case, either.
569
5702.1 Sun Oct 29 02:01:57 CET 2006
571 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
572 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
573 - fix a bug in aio_move where it would fail everytime
574 it would have to copy files manually.
575 - doc updates.
576 - start threads only on (very low) demand.
577 - end superfluous threads automatically after 10s idling.
578 - add IO::AIO::max_idle to control this.
579 - some tuning applied to random places.
580 - add aio_mknod.
581
5822.0 Thu Oct 26 18:27:58 CEST 2006
583 - minor incompatibility: max_outstanding semantics have changed.
584 - major rewrite, consider all functionality EXPERIMENTAL.
585 - aio requests can be cancelled.
586 - callbacks can be (re-)set later.
587 - aio requests can choose between 9 priorities.
588 - add aio_group: aio requests can be grouped
589 into composite requests.
590 - generator interface for groups.
591 - add IO::AIO::poll_some.
592 - major documentation improvements.
593 - very minor bugfixes.
594 - add aio_nop for dummy requests.
595 - add aio_busy mainly for benchmarking and debugging.
596 - use "fast" mutexes on linux.
597 - use dynamic (and larger) buffers instead of
598 putting them onto the stack.
599 - optimise x86 and amd64 a bit.
600 - better error checking when ENOMEM.
601 - hopefully fix mem and dirp leaks on fork.
602 - warn about broken perl malloc.
603 - compiles on cygwin (but pread is broken on cygwin
604 which is not detected by autoconf, so you have to
605 edit autoconf/config.h yourself to enable emulation).
606
6071.8 Sat Jun 24 22:20:44 CEST 2006
608 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
609
6101.73 Wed Mar 1 22:49:32 CET 2006
611 - codename "jost"
612 - AIX/Solaris(?) aren't being helpful again, hardcode a value
613 for NAME_MAX and drive with your eyes closed (reported by
614 wcooley@nakedape.cc).
615
6161.72 Thu Feb 2 00:40:44 CET 2006
617 - another minor bug in aio_scandir, again, the callback was called
618 twice when the directory can't be stat'ed.
619
6201.71 Mon Dec 26 20:20:03 CET 2005
621 - grr, another minor bug in aio_scandir, this time resulting
622 in a runtime error.
623
6241.7 Mon Dec 26 19:29:48 CET 2005
625 - aio_scandir errornously called callback twice in some cases.
626 - added AnyEvent example.
627
6281.61 Wed Sep 7 19:40:42 CEST 2005
629 - no longer include $Config{libs}, as distros include too much
630 garbage in there that is not installed on typical systems
631 (for example, debian links perl against -lgdbm and many more
632 libraries despite perl not needing it, slowing down startup and
633 wasting memory).
634
6351.6 Tue Aug 30 17:44:44 CEST 2005
636 - added aio_readdir, aio_scandir.
637 - added aio_sendfile, including sendfile emulation when sendfile
638 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
639 support is unavailable on my solaris 8 machine, but preliminary
640 code is there. What's lacking is configury stuff and testing...).
641
6421.5 Sat Aug 20 02:32:19 CEST 2005
643 - create the aio threads on demand only (good after forking).
644 - somebody nagged about C89 compatibility, so this release should
645 be C89 compatible, but no guarantees for future ones.
646 - abort when the configure script fails.
647
6481.4 Wed Aug 17 08:07:27 CEST 2005
649 - forgot to recreate the pipe after forking, this could cause
650 deadlocks.
651
6521.3 Wed Aug 17 07:25:54 CEST 2005
653 - properly propagate exceptions from callbacks, instead of silently
654 eating them.
655 - use a different fork algorithm that avoids recursive callback
656 invocations and reduces fork latency in busy processes.
657 - fix a bug where the buffer scalar in aio_read got assigned the wrong
658 length after reading.
659 - fix a bug where the child would process some outstanding requests
660 from the parent.
661 - make a copy of the callback scalar, to avoid some very uncommon
662 (but valid) usages where the callback scalar changes.
663 - the callback was never freed in aio_read/aio_write.
664 - aio_read/aio_write will now set the readonly flag on the data
665 scalar for better error reporting.
666
6671.2 Wed Aug 17 01:22:58 CEST 2005
668 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
669 - use SvPVbyte for filenames now. You *need* to encode your strings to
670 the external filename encoding first.
671 - fix the bug where filehandles could leak (again).
672 - clarify freebsd situation: make it work and tell me how, or go away
673 with your underdocumented, broken and outdated OS.
674 - fork'ing should now be officially supported (where linux and
675 posix contradict each other, I followed posix).
676 - only call read() once per poll, not twice (speedup).
677 - new functions: aio_rmdir, aio_symlink.
678 - force callback arguments to be undef or a reference, for better
679 error catching.
2 680
31.1 Sun Aug 7 05:27:23 CEST 2005 6811.1 Sun Aug 7 05:27:23 CEST 2005
4 - added configure script to detect availability of some calls. 682 - added configure script to detect availability of some calls.
5 (imperfect, as we cannot detect things like -lrt due to missing 683 (imperfect, as we cannot detect things like -lrt due to missing
6 feedback yet). 684 feedback yet).

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