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Comparing IO-AIO/Changes (file contents):
Revision 1.161 by root, Thu Jun 19 21:25:30 2008 UTC vs.
Revision 1.358 by root, Tue Jul 24 04:58:59 2018 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: scandir - some dirs mostly contain subdirs - invert logic?
4TODO: aio_cptree/mvtree 4TODO: aio_cptree/mvtree
5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) 5TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking 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 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
38
39 - aio_mtouch touch all pages as requested, not just the first page in most cases.
40 - new function: IO::AIO::mremap, linux-specific mremap, with constants MREMAP_MAYMOVE
41 and MREMAP_FIXED.
42 - add O_ACCMODE.
43
444.4 Tue Feb 20 07:54:12 CET 2018
45 - new aio_slurp request.
46 - add (experimental) IO::AIO::eventfd and timerfd* function.
47 - add (experimental) IO::AIO::get_fdlimit and IO::AIO::min_fdlimit.
48 - point out that aio_copy overwrites existing files.
49 - removed filesystem magic number table from aio_statvfs docs as
50 statvfs doesn't actually return this info at all (statfs does).
51 - add a bunch of (mostly linux-specific) constants for use in ioctls
52 (see aio_ioctl docs).
53 - treescan now has a proper manpage and useful --help output.
54 - new option --sync in treescan, to sync everything in a subtree.
55 - changed default for aio_msync flags to MSYNC_SYNC.
56 - document offset/length behaviour of mprotect/madvise.
57 - support linux's renameat2 (via aio_rename2).
58 - add aio_rename2, an aio_rename with flags.
59 - add F_DUPPFD_CLOEXEC, F_OFD_[SG]ETLKW? constants.
60 - add FALLOC_FL_INSERT_RANGE, FALLOC_FL_UNSHARE_RANGE.
61 - (libeio) use posix_close if available.
62 - (libeio) internal close() calls no longer disturb errno.
63 - add IO:AIO::FALLOC_FL_UNSHARE.
64 - update schmorp.h for removal of USE_SOCKETS_AS_HANDLES
65 and better eventfd detection.
66
674.34 Sun May 1 19:18:24 CEST 2016
68 - def0.h was not properly generated during previous release, causing
69 compile errors on various platforms.
70 - major/minor were accidentally switched (reported by Alexander Lishenyuk).
71 - removed duplicate definition of MAP_HUGETLB, that was found due to
72 a bug in Perl::Tidy (testcase by alaska332@gmail.com).
73 - added (untested!) aio_fcntl, aio_ioctl requests.
74 - (libeio) names set via prctl are truncated to 15 chars + nul, not 16,
75 as manpages-dev originally claimed.
76
774.33 Mon Jan 18 12:50:10 CET 2016
78 - add IO::AIO::pipe2 function.
79 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
80 constants.
81 - added support for O_TMPFILE and O_PATH constants.
82 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
83 consdtants, whether they can be sensibly used or not.
84 - use NO_INIT where applicable.
85 - update libecb.
86 - added stability canary support.
87 - updated linux super magic table to 4.3.3.
88
894.32 Wed Feb 11 20:32:11 CET 2015
90 - replace off_t by STRLEN where appropriate, should not result in
91 user-visible changes.
92 - update ecb.h for C11 compatibility.
93
944.31 Tue Jun 3 03:29:27 CEST 2014
95 - work around more 5.20 bugs. backwards compatibility my ass.
96
974.3 Fri Apr 11 06:22:38 CEST 2014
98 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
99 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
100 in 5.18. What's so attractive about giving a shit about backwards
101 compatibility - I will never understand.
102
1034.2 Sat Jan 25 01:13:14 CET 2014
104 - aio_group could corrupt memory because it didn't restore
105 the stack after req_submit.
106 - be more careful on (e.g. permission) errors in bin/treescan.
107 - work around changes in ExtUtils::MakeMaker.
108 - (libeio) implement aio_realpath for win32.
109 - (xthread) work around compile time bugs in ptw32.
110 - added IO::AIO::pipesize.
111 - (libecb) insignificant update.
112
1134.19 Sun Jan 6 12:47:26 CET 2013
114 - avoid endless loop in fiemap with some XFS files.
115 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
116 and call rename/rmdir instead of renameat/unlinkat.
117
1184.18 Thu Oct 11 07:01:26 CEST 2012
119 - fix unintended xthread_create by intentionalising it :)
120
1214.17 Thu Oct 11 05:19:47 CEST 2012
122 - rename aio_fallocate to aio_allocate, to match documentation.
123 - add list of linux fsid values to aio_statvfs docs.
124 - work around a bug in btrfs' FIEMAP ioctl implementation.
125 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
126 as per unix spec.
127
1284.16 Tue Aug 14 05:39:03 CEST 2012
129 - aio_statvfs was wromgly marked for wd emulation, causing
130 it to malfunction for paths.
131 - fix a crash in aio_fiemap, when used on ranges without any
132 extents.
133 - work around linux kernel bug (at least in 3.2): kernel might
134 trash fiemap input arguments.
135 - work around linux kernel bug (at least in 3.2): kernel does not
136 set FIEMAP_EXTENT_LAST on last segment.
137 - work around linux kernel bug (at least in 3.2): kernel silently
138 truncates segment count if a file.
139 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
140 to quick overview.
141 - splice can corrupt data.
142 - (libeio) remove pread/pwrite emulation.
143 - do not grow mmaped scalars in aio_read.
144 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
145 - provide pread/pwrite for win32, making it link again on native win32.
146
1474.15 Tue Apr 10 06:59:00 CEST 2012
148 - always include linux/types.h for fiemap, for compatibility to
149 ancient systems (Paul Howarth).
150 - experimental support for IO::AIO::splice and ::tee (no aio_...).
151 - provide SEEK_HOLE and SEEK_DATA, if available.
152 - work around (again!) an immensely stupid bug in RHEL, defining
153 autoconf macros in linux system headers (analysed by Paul Howarth).
154
1554.14 Sat Apr 7 02:45:18 CEST 2012
156 - fix stat structure usage on windows, which caused bogus stat results.
157 - (libeio) make readahead emulation behave more like actual readahead by never failing.
158 - new request aio_seek.
159 - new request aio_fiemap.
160 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
161
1624.12 Fri Dec 30 08:51:25 CET 2011
163 - realpath would return a random value if the name was too long,
164 instead of -1.
165 - port to c89.
166
1674.11 Mon Oct 10 00:24:11 CEST 2011
168 - libeio didn't compile on !linux (Paul Howarth).
169
1704.1 Sun Oct 9 10:24:11 CEST 2011
171 - IO::AIO did access uninitialised memory on unsuccessful stats.
172 - (libeio) added syncfs syscall wrapper.
173 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
174 - (libeio) support multiple indepenent working directories.
175 - applied speling corrections by Nicholas Bamber.
176 - tune treescan #threads and #outstanding requests a bit.
177 - reduce the number of file descriptors in use at any one time
178 in treescan, to avoid running out of them (and using too much ram).
179 - take advantage of working directoriy abstractions
180 in aio_scandir and treescan.
181 - reduce compiled size by ~10% by not inlining some key functionality.
182 - added --progress switch to treescan.
183
1844.0 Mon Jul 18 05:01:10 CEST 2011
185 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
186 see FORK BEHAVIOUR in manpage for details.
187 - passes testsuite on win32 now and may actually work
188 (activestate 5.10.1 / MSVC6, YMMV).
189 - (libeio) fix a deadlock where a wakeup signal could be missed when
190 a timeout occured at the same time.
191 - (libeio) added realpath.
192 - (libeio) added fallocate.
193 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
194 - (libeio) do not acquire any locks when forking.
195 - (libeio) use fewer time() syscalls when waiting for new requests.
196
1973.93 Wed Jun 29 23:44:18 CEST 2011
198 - ECB.H WAS MISSING.
199
2003.92 Wed Jun 29 14:45:41 CEST 2011
201 - ecb.h was missing.
202
2033.91 Wed Jun 29 13:24:42 CEST 2011
204 - (libeio) work around a Linux (and likely FreeBSD and other
205 kernels) bug where sendfile would not transfer all the requested
206 bytes on large transfers, using a heuristic.
207 - buggy sendfile caused aio_move/copy to sometimes fail for big
208 files (fortunately it checks that the whole file has been
209 transferred...)
210 - use libecb for higher performance and higher portability.
211 - (libeio) disable sendfile on darwin, it's too broken.
212 - disable fork tests on !linux, as only linux supports mixing
213 pthread and fork in perl.
214 - document the fact that fork doesn't work anymore when using
215 this module, on anything !GNU/Linux.
216 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
217 run on a 0.1MHz cpu. Or so.
218
2193.9 Fri May 27 02:43:47 CEST 2011
220 - (libeio) fix memory corruption in aio_readdirx for the flags
221 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
222 - add lots of newer POSIX and GNU/Linux-specific open
223 flags.
224
2253.8 Sun Mar 27 12:25:33 CEST 2011
226 - use nonstandard but maybe-working-on-bsd fork technique.
227 - support a max_idle value of 0.
228 - support setting of idle timeout value (IO::AIO::idle_timeout).
229
2303.72 Fri Feb 11 04:25:38 CET 2011
231 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
232 - aio_mknod always used a dev_t value of 0.
233 - new treescan option: --grep.
234 - add more S_IF macros, and major/minor/makedev "macros".
235
2363.71 Thu Dec 30 08:18:46 CET 2010
237 - the numerical result value passed to callbacks did not stringify
238 correctly, due to internal reuse and failure to reset the sv flags.
239 - actually test for posix_[mf]advise, as at least uClibc defines
240 _POSIX_ADVISORY_INFO without actually having any of the required
241 funcitonality. ugh.
242
2433.7 Mon Nov 1 23:00:34 CET 2010
244 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
245 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
246 - document the sad state of affairs w.r.t. pthread on many bsds.
247 - do not enable mmap on systems without _POSIX_MAPPED_FILES
248 (openbsd 4.8).
249 - do not leak memory in IO::AIO::mmap when the scalar already
250 had string-data.
251 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
252 them.
253 - cache the result IV, for a minor speedup in the common case.
254 - croak when an mmapped-scalar changes location, to detect
255 user-errors better.
256 - fix aio_readlink prototype.
257
2583.65 Wed Mar 31 02:45:05 CEST 2010
259 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
260 cut off long pathnames in aio_readlink (based on patch by
261 Rasmus Andersson).
262 - a double fork partially killed the event pipe (great testcase
263 by dormando). affects IO::AIO, BDB and Async::Interrupt.
264 - suck steve's dick and rename our symbols to avoid colliding
265 with nonstandard identifier spam on the broken os x pseudo-os.
266 affects IO::AIO and BDB.
267
2683.6 Mon Jan 11 00:43:39 CET 2010
269 - (libeio) more fixes for the freebsd/apple sendfile - broken by
270 manpage standards, but apparently correct accoridng to actual
271 kernel sources.
272 - add IO::AIO::mmap/munmap support.
273 - add IO::AIO::m(un)lockall support.
274 - clean up manpage.
275
2763.5 Thu Jan 7 21:25:04 CET 2010
277 - (liebio) fix freebsd sendfile (Vanilla Hsu).
278 - (libeio) also fix darwin sendfile that suffered from a similar bug.
279 - add aio_statvfs as interface to statvfs/fstatvfs.
280 - work around buggy symlink() on cygwin in the testsuite.
281 - wtf. freebsd-8.0 actually passes the testsuite! I knew
282 they could implement fork and semaphores one day! cheers!
283
2843.4 Sat Jan 2 15:13:04 CET 2010
285 - (libeio) max_poll_time was not properly converted to ticks.
286 - clarify cancel_subs description.
287 - IO::AIO::sendfile did not actually return the return value
288 from the sendfile call.
289 - implement aio_msync, aio_mtouch.
290 - (libeio) tentatively support darwin in sendfile.
291
2923.31 Thu Nov 12 02:14:29 CET 2009
293 - fix result status documentation of aio_copy, aio_move.
294 - speed up object creation considerably by avoiding
295 hash lookups.
296
2973.3 Wed Aug 5 13:52:58 CEST 2009
298 - use common::sense.
299 - use common schmorp.h header.
300 - allow integers (file descriptors) in addition to file handles.
301 - take advantage of linux' eventfd (but it seems slower on smp?).
302 - use poll not select on posix platforms.
303
3043.261 Wed Jul 1 10:11:51 CEST 2009
305 - more 0S X workarounds (patch by Tokuhiro Matsuno).
306
3073.26 Tue Jun 30 09:33:26 CEST 2009
308 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
309 try to work around this horribly broken OS in a somewhat hackish
310 way. might help other os's too.
311
3123.25 Sat Jun 27 05:18:26 CEST 2009
313 - added IO::AIO::fadvise and IO::AIO::sendfile.
314 - (libeio) replaced quicksort+insertion sort by a tuned radix
315 sort + insertion sort, resulting in comparable runtime (usually
316 faster) to the old version, but without any ill side effects on
317 degenerated (for quicksort) data.
318 - (libeio) correctly sort dirs by inodes if we have perfect type
319 knowledge and DIRS_FIRST is used.
320 - (libeio) internally the wrong DT_* constants were used, but no
321 known system has differing EIO_DT_*/DT_* values, so not an issue.
322 - removed a (harmless) assert that was left over on the code
323 but should not have been.
324 - use more correct types (change IO length from IV to VAL64,
325 which makes a difference on systems without 64 bit perls).
326
3273.23 Sat Jun 13 16:57:58 CEST 2009
328 - fix off-by-one bug in aio_readdir that was introduced in the
329 rushed 3.22 release.
330
3313.22 Sat Jun 13 15:32:40 CEST 2009
332 - speed up readdirx sort algorithm slightly.
333 - bin/treescan was missing from distro tarball.
334
3353.21 Fri Jun 12 18:45:53 CEST 2009
336 - new options --dirs and --files for treescan.
337 - install bin/treescan by default.
338 - (libeio) aio_readdir can now be cancelled while executing.
339 - fix a printf format string for 64 bit systems (could lead
340 to problems on big endian 64 bit systems).
341 - do not use qsort() but our own algorithm: glibc initialises
342 the whole locale and I/O subsystem inside qsort, causing
343 a stack overflow on 32 bit machines. The new sort uses much less
344 stack and is more than twice as fast in typical situations.
345
3463.2 Sun Jun 7 20:30:05 CEST 2009
347 - (libeio) pwrite emulation was even more flawed than intended and did
348 not restore the file offset.
349 - add aio_readdirx, which can return inode and filetype and sort
350 the names in various ways.
351 - unfortunately, utime, chmod, chown on an open file that has just
352 been written can easily block, which caused aio_copy to block the
353 process. no more!
354 - no longer rely on dst path in aio_copy when futime is available.
355
3563.19 Tue Apr 21 22:05:21 CEST 2009
357 - more perl 5.10 workarounds for aio_read and write.
358 - aio_write no longer modifies the sv (if possible).
359 - aio_read now works correctly with magic values.
360
3613.18 Sun Apr 19 21:17:32 CEST 2009
362 - better diagnostics when some aio_* functions get passed an illegal fh.
363 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
364
3653.17 Thu Nov 20 08:45:36 CET 2008
366 - (libeio) added aio_sync_file_range (untested).
367 - add aio_busy to @IO::AIO::AIO_REQ.
368
3693.16 Wed Oct 22 18:28:01 CEST 2008
370 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
371 part to improve portability to perl 5.8 (reported by szymon).
372
3733.15 Mon Oct 13 00:39:55 CEST 2008
374 - automatic removal of feeders was broken.
375 - (libeio) use a more robust method to detect whether a feeder
376 has added something to the group or not.
377
3783.1 Thu Oct 2 13:34:40 CEST 2008
379 - pre-deref the passed callback object, for increased speed
380 and decreased memory usage.
381 - call on_next_submit callback even for aio_group - impact unknown,
382 but seems more correct.
383 - $req->cb now returns the original callback.
384 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
385 requiring a thread switch.
386 - (libeio) status code of aio_futime and aio_utime was always passed 0.
387 - do some other ยต-optimisations.
388
3893.07 Sat Aug 2 16:06:13 CEST 2008
390 - do not include LIBS in autoconf tests.
391
3923.06 Tue Jul 15 12:41:32 CEST 2008
393 - move preadwritelock definition before it's first reference,
394 to make it compile again on broken platforms (they still exist)
395 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
8 396
93.05 Thu Jun 19 23:23:52 CEST 2008 3973.05 Thu Jun 19 23:23:52 CEST 2008
10 - work around perl overriding readdir etc. with thread-unsafe 398 - work around perl overriding readdir etc. with thread-unsafe
11 (sic!) versions. 399 (sic!) versions.
12 400

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