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Comparing IO-AIO/Changes (file contents):
Revision 1.132 by root, Thu Oct 4 12:50:35 2007 UTC vs.
Revision 1.329 by root, Tue Jul 12 20:46:33 2016 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? 5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: fix setsig
7TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) 6TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
8TODO: aio_mincore?
9TODO: getxattr etc.?
10TODO: F_DUPFD_CLOEXEC
11TODO: emulation for splice?
12TODO: eio_mmap|mlock|munmap|splice...
13TODO: syncfs/sync windows:
14TODO: F_SETPIPE_SZ, F_GETPIPE_SZ
15TODO: posix_fallocate when flags=0
16http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888
17http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx
18http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx
19http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx
20http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx
21http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx
22http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
23http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
24TODO: extra socket/tcp constants &c?
25TODO: getrandom, GRND_NONBLOCK, GRND_NONBLOCK
26TODO: 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);
27TODO: O_TMPFILE
28TODO: FALLOC_FL_COLLAPSE_RANGE
29TODO: FALLOC_FL_ZERO_RANGE
30TODO: renameat RENAME_EXCHANGE, RENAME_NOREPLACE, RENAME_EXCHANGE
31TODO: fcntl F_GETLKP/F_SETLKP/F_SETLKPW, http://lwn.net/Articles/586904/
32TODO: flink + AT_EMPTY_PATH
33TODO: name_to_handle_At + open_by_handle_at = clone fds
34TODO: lchown
35TODO: copy_file_range
36
37TODO: rewrite rmtree et al. to support working directories (also speed them up)
38TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
39TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611)
40 http://www.openwall.com/lists/musl/2013/02/23/4
41TODO: aio_fcntl/ioctl test.
42
43 - add MADV_FREE constant.
44
454.34 Sun May 1 19:18:24 CEST 2016
46 - def0.h was not properly generated during previous release, causing
47 compile errors on various platforms.
48 - major/minor were accidentally switched (reported by Alexander Lishenyuk).
49 - removed duplicate definition of MAP_HUGETLB, that was found due to
50 a bug in Perl::Tidy (testcase by alaska332@gmail.com).
51 - added (untested!) aio_fcntl, aio_ioctl requests.
52 - (libeio) names set via prctl are truncated to 15 chars + nul, not 16,
53 as manpages-dev originally claimed.
54
554.33 Mon Jan 18 12:50:10 CET 2016
56 - add IO::AIO::pipe2 function.
57 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
58 constants.
59 - added support for O_TMPFILE and O_PATH constants.
60 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
61 consdtants, whether they can be sensibly used or not.
62 - use NO_INIT where applicable.
63 - update libecb.
64 - added stability canary support.
65 - updated linux super magic table to 4.3.3.
66
674.32 Wed Feb 11 20:32:11 CET 2015
68 - replace off_t by STRLEN where appropriate, should not result in
69 user-visible changes.
70 - update ecb.h for C11 compatibility.
71
724.31 Tue Jun 3 03:29:27 CEST 2014
73 - work around more 5.20 bugs. backwards compatibility my ass.
74
754.3 Fri Apr 11 06:22:38 CEST 2014
76 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
77 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
78 in 5.18. What's so attractive about giving a shit about backwards
79 compatibility - I will never understand.
80
814.2 Sat Jan 25 01:13:14 CET 2014
82 - aio_group could corrupt memory because it didn't restore
83 the stack after req_submit.
84 - be more careful on (e.g. permission) errors in bin/treescan.
85 - work around changes in ExtUtils::MakeMaker.
86 - (libeio) implement aio_realpath for win32.
87 - (xthread) work around compile time bugs in ptw32.
88 - added IO::AIO::pipesize.
89 - (libecb) insignificant update.
90
914.19 Sun Jan 6 12:47:26 CET 2013
92 - avoid endless loop in fiemap with some XFS files.
93 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
94 and call rename/rmdir instead of renameat/unlinkat.
95
964.18 Thu Oct 11 07:01:26 CEST 2012
97 - fix unintended xthread_create by intentionalising it :)
98
994.17 Thu Oct 11 05:19:47 CEST 2012
100 - rename aio_fallocate to aio_allocate, to match documentation.
101 - add list of linux fsid values to aio_statvfs docs.
102 - work around a bug in btrfs' FIEMAP ioctl implementation.
103 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
104 as per unix spec.
105
1064.16 Tue Aug 14 05:39:03 CEST 2012
107 - aio_statvfs was wromgly marked for wd emulation, causing
108 it to malfunction for paths.
109 - fix a crash in aio_fiemap, when used on ranges without any
110 extents.
111 - work around linux kernel bug (at least in 3.2): kernel might
112 trash fiemap input arguments.
113 - work around linux kernel bug (at least in 3.2): kernel does not
114 set FIEMAP_EXTENT_LAST on last segment.
115 - work around linux kernel bug (at least in 3.2): kernel silently
116 truncates segment count if a file.
117 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
118 to quick overview.
119 - splice can corrupt data.
120 - (libeio) remove pread/pwrite emulation.
121 - do not grow mmaped scalars in aio_read.
122 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
123 - provide pread/pwrite for win32, making it link again on native win32.
124
1254.15 Tue Apr 10 06:59:00 CEST 2012
126 - always include linux/types.h for fiemap, for compatibility to
127 ancient systems (Paul Howarth).
128 - experimental support for IO::AIO::splice and ::tee (no aio_...).
129 - provide SEEK_HOLE and SEEK_DATA, if available.
130 - work around (again!) an immensely stupid bug in RHEL, defining
131 autoconf macros in linux system headers (analysed by Paul Howarth).
132
1334.14 Sat Apr 7 02:45:18 CEST 2012
134 - fix stat structure usage on windows, which caused bogus stat results.
135 - (libeio) make readahead emulation behave more like actual readahead by never failing.
136 - new request aio_seek.
137 - new request aio_fiemap.
138 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
139
1404.12 Fri Dec 30 08:51:25 CET 2011
141 - realpath would return a random value if the name was too long,
142 instead of -1.
143 - port to c89.
144
1454.11 Mon Oct 10 00:24:11 CEST 2011
146 - libeio didn't compile on !linux (Paul Howarth).
147
1484.1 Sun Oct 9 10:24:11 CEST 2011
149 - IO::AIO did access uninitialised memory on unsuccessful stats.
150 - (libeio) added syncfs syscall wrapper.
151 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
152 - (libeio) support multiple indepenent working directories.
153 - applied speling corrections by Nicholas Bamber.
154 - tune treescan #threads and #outstanding requests a bit.
155 - reduce the number of file descriptors in use at any one time
156 in treescan, to avoid running out of them (and using too much ram).
157 - take advantage of working directoriy abstractions
158 in aio_scandir and treescan.
159 - reduce compiled size by ~10% by not inlining some key functionality.
160 - added --progress switch to treescan.
161
1624.0 Mon Jul 18 05:01:10 CEST 2011
163 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
164 see FORK BEHAVIOUR in manpage for details.
165 - passes testsuite on win32 now and may actually work
166 (activestate 5.10.1 / MSVC6, YMMV).
167 - (libeio) fix a deadlock where a wakeup signal could be missed when
168 a timeout occured at the same time.
169 - (libeio) added realpath.
170 - (libeio) added fallocate.
171 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
172 - (libeio) do not acquire any locks when forking.
173 - (libeio) use fewer time() syscalls when waiting for new requests.
174
1753.93 Wed Jun 29 23:44:18 CEST 2011
176 - ECB.H WAS MISSING.
177
1783.92 Wed Jun 29 14:45:41 CEST 2011
179 - ecb.h was missing.
180
1813.91 Wed Jun 29 13:24:42 CEST 2011
182 - (libeio) work around a Linux (and likely FreeBSD and other
183 kernels) bug where sendfile would not transfer all the requested
184 bytes on large transfers, using a heuristic.
185 - buggy sendfile caused aio_move/copy to sometimes fail for big
186 files (fortunately it checks that the whole file has been
187 transferred...)
188 - use libecb for higher performance and higher portability.
189 - (libeio) disable sendfile on darwin, it's too broken.
190 - disable fork tests on !linux, as only linux supports mixing
191 pthread and fork in perl.
192 - document the fact that fork doesn't work anymore when using
193 this module, on anything !GNU/Linux.
194 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
195 run on a 0.1MHz cpu. Or so.
196
1973.9 Fri May 27 02:43:47 CEST 2011
198 - (libeio) fix memory corruption in aio_readdirx for the flags
199 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
200 - add lots of newer POSIX and GNU/Linux-specific open
201 flags.
202
2033.8 Sun Mar 27 12:25:33 CEST 2011
204 - use nonstandard but maybe-working-on-bsd fork technique.
205 - support a max_idle value of 0.
206 - support setting of idle timeout value (IO::AIO::idle_timeout).
207
2083.72 Fri Feb 11 04:25:38 CET 2011
209 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
210 - aio_mknod always used a dev_t value of 0.
211 - new treescan option: --grep.
212 - add more S_IF macros, and major/minor/makedev "macros".
213
2143.71 Thu Dec 30 08:18:46 CET 2010
215 - the numerical result value passed to callbacks did not stringify
216 correctly, due to internal reuse and failure to reset the sv flags.
217 - actually test for posix_[mf]advise, as at least uClibc defines
218 _POSIX_ADVISORY_INFO without actually having any of the required
219 funcitonality. ugh.
220
2213.7 Mon Nov 1 23:00:34 CET 2010
222 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
223 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
224 - document the sad state of affairs w.r.t. pthread on many bsds.
225 - do not enable mmap on systems without _POSIX_MAPPED_FILES
226 (openbsd 4.8).
227 - do not leak memory in IO::AIO::mmap when the scalar already
228 had string-data.
229 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
230 them.
231 - cache the result IV, for a minor speedup in the common case.
232 - croak when an mmapped-scalar changes location, to detect
233 user-errors better.
234 - fix aio_readlink prototype.
235
2363.65 Wed Mar 31 02:45:05 CEST 2010
237 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
238 cut off long pathnames in aio_readlink (based on patch by
239 Rasmus Andersson).
240 - a double fork partially killed the event pipe (great testcase
241 by dormando). affects IO::AIO, BDB and Async::Interrupt.
242 - suck steve's dick and rename our symbols to avoid colliding
243 with nonstandard identifier spam on the broken os x pseudo-os.
244 affects IO::AIO and BDB.
245
2463.6 Mon Jan 11 00:43:39 CET 2010
247 - (libeio) more fixes for the freebsd/apple sendfile - broken by
248 manpage standards, but apparently correct accoridng to actual
249 kernel sources.
250 - add IO::AIO::mmap/munmap support.
251 - add IO::AIO::m(un)lockall support.
252 - clean up manpage.
253
2543.5 Thu Jan 7 21:25:04 CET 2010
255 - (liebio) fix freebsd sendfile (Vanilla Hsu).
256 - (libeio) also fix darwin sendfile that suffered from a similar bug.
257 - add aio_statvfs as interface to statvfs/fstatvfs.
258 - work around buggy symlink() on cygwin in the testsuite.
259 - wtf. freebsd-8.0 actually passes the testsuite! I knew
260 they could implement fork and semaphores one day! cheers!
261
2623.4 Sat Jan 2 15:13:04 CET 2010
263 - (libeio) max_poll_time was not properly converted to ticks.
264 - clarify cancel_subs description.
265 - IO::AIO::sendfile did not actually return the return value
266 from the sendfile call.
267 - implement aio_msync, aio_mtouch.
268 - (libeio) tentatively support darwin in sendfile.
269
2703.31 Thu Nov 12 02:14:29 CET 2009
271 - fix result status documentation of aio_copy, aio_move.
272 - speed up object creation considerably by avoiding
273 hash lookups.
274
2753.3 Wed Aug 5 13:52:58 CEST 2009
276 - use common::sense.
277 - use common schmorp.h header.
278 - allow integers (file descriptors) in addition to file handles.
279 - take advantage of linux' eventfd (but it seems slower on smp?).
280 - use poll not select on posix platforms.
281
2823.261 Wed Jul 1 10:11:51 CEST 2009
283 - more 0S X workarounds (patch by Tokuhiro Matsuno).
284
2853.26 Tue Jun 30 09:33:26 CEST 2009
286 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
287 try to work around this horribly broken OS in a somewhat hackish
288 way. might help other os's too.
289
2903.25 Sat Jun 27 05:18:26 CEST 2009
291 - added IO::AIO::fadvise and IO::AIO::sendfile.
292 - (libeio) replaced quicksort+insertion sort by a tuned radix
293 sort + insertion sort, resulting in comparable runtime (usually
294 faster) to the old version, but without any ill side effects on
295 degenerated (for quicksort) data.
296 - (libeio) correctly sort dirs by inodes if we have perfect type
297 knowledge and DIRS_FIRST is used.
298 - (libeio) internally the wrong DT_* constants were used, but no
299 known system has differing EIO_DT_*/DT_* values, so not an issue.
300 - removed a (harmless) assert that was left over on the code
301 but should not have been.
302 - use more correct types (change IO length from IV to VAL64,
303 which makes a difference on systems without 64 bit perls).
304
3053.23 Sat Jun 13 16:57:58 CEST 2009
306 - fix off-by-one bug in aio_readdir that was introduced in the
307 rushed 3.22 release.
308
3093.22 Sat Jun 13 15:32:40 CEST 2009
310 - speed up readdirx sort algorithm slightly.
311 - bin/treescan was missing from distro tarball.
312
3133.21 Fri Jun 12 18:45:53 CEST 2009
314 - new options --dirs and --files for treescan.
315 - install bin/treescan by default.
316 - (libeio) aio_readdir can now be cancelled while executing.
317 - fix a printf format string for 64 bit systems (could lead
318 to problems on big endian 64 bit systems).
319 - do not use qsort() but our own algorithm: glibc initialises
320 the whole locale and I/O subsystem inside qsort, causing
321 a stack overflow on 32 bit machines. The new sort uses much less
322 stack and is more than twice as fast in typical situations.
323
3243.2 Sun Jun 7 20:30:05 CEST 2009
325 - (libeio) pwrite emulation was even more flawed than intended and did
326 not restore the file offset.
327 - add aio_readdirx, which can return inode and filetype and sort
328 the names in various ways.
329 - unfortunately, utime, chmod, chown on an open file that has just
330 been written can easily block, which caused aio_copy to block the
331 process. no more!
332 - no longer rely on dst path in aio_copy when futime is available.
333
3343.19 Tue Apr 21 22:05:21 CEST 2009
335 - more perl 5.10 workarounds for aio_read and write.
336 - aio_write no longer modifies the sv (if possible).
337 - aio_read now works correctly with magic values.
338
3393.18 Sun Apr 19 21:17:32 CEST 2009
340 - better diagnostics when some aio_* functions get passed an illegal fh.
341 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
342
3433.17 Thu Nov 20 08:45:36 CET 2008
344 - (libeio) added aio_sync_file_range (untested).
345 - add aio_busy to @IO::AIO::AIO_REQ.
346
3473.16 Wed Oct 22 18:28:01 CEST 2008
348 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
349 part to improve portability to perl 5.8 (reported by szymon).
350
3513.15 Mon Oct 13 00:39:55 CEST 2008
352 - automatic removal of feeders was broken.
353 - (libeio) use a more robust method to detect whether a feeder
354 has added something to the group or not.
355
3563.1 Thu Oct 2 13:34:40 CEST 2008
357 - pre-deref the passed callback object, for increased speed
358 and decreased memory usage.
359 - call on_next_submit callback even for aio_group - impact unknown,
360 but seems more correct.
361 - $req->cb now returns the original callback.
362 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
363 requiring a thread switch.
364 - (libeio) status code of aio_futime and aio_utime was always passed 0.
365 - do some other ยต-optimisations.
366
3673.07 Sat Aug 2 16:06:13 CEST 2008
368 - do not include LIBS in autoconf tests.
369
3703.06 Tue Jul 15 12:41:32 CEST 2008
371 - move preadwritelock definition before it's first reference,
372 to make it compile again on broken platforms (they still exist)
373 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
374
3753.05 Thu Jun 19 23:23:52 CEST 2008
376 - work around perl overriding readdir etc. with thread-unsafe
377 (sic!) versions.
378
3793.04 Wed Jun 18 01:35:38 CEST 2008
380 - (libeio) fix eio_mknod, which confused it's arguments.
381 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
382 is stupid.
383 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
384 - (libeio) fix a bug that could potentially cause IO::AIO
385 not to get initialised properly.
386
3873.03 Thu May 29 05:33:30 CEST 2008
388 - (libeio) correctly call pthread_attr_destroy ().
389 - (libeio) work around broken bsd headers once more.
390 - reduce shared library size again by not including wrappers.
391 - max_outstanding could cause poll to enter a busy-waiting loop.
392 - document the new IO::AIO::poll_cb result value.
393
3943.02 Mon May 12 02:32:02 CEST 2008
395 - fix a memory leak on aio_readlink.
396 - bring back working fchmod.
397 - nop and busy now set result to 0.
398 - set errno to ENOMEM when allocation fails.
399
4003.01 Sun May 11 03:07:03 CEST 2008
401 - (libeio) make it compile on systems without readahead or readdir_r.
402 - (libeio) improve configure check for readahead availability.
403 - do not try to link against -lrt.
404 - use a separate configure script for IO::AIO (not the libeio one).
405
4063.0 Sun May 11 00:57:14 CEST 2008
407 - added bin/treescan to the distribution.
408 - switched to using libeio.
409 - LOTS OF INCOMPATIBLE CHANGES:
410 - remove signal functionality, it is not worth the effort.
411 - max_outstanding no longer returns the previous number of requests.
412 - poll_cb no longer returns number of requests.
413
4142.62 Sat Apr 26 13:59:33 CEST 2008
415 - port to solaris perls configured for old posix
416 (analysed by Jost Krieger).
417 - keep a reference to the perl filehandle object in aio_close,
418 so it doesn't get closed prematurely, leading to ugly races.
419
4202.61 Wed Apr 16 18:45:02 CEST 2008
421 - fix treescan output duplication and improve output ordering.
422 also display files given on the commandline.
423 - use a different algorithm for aio_close that is faster
424 and probably has even lower chances of blocking.
425 - do our own stack memory management for threads - linux
426 allocates outrageous amounts of VM (not so bad unless you
427 use mlockall...), which severely limits the number of threads
428 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
429 and 4096 * sizeof (long) (usually this is 16..64k).
430
4312.6 Sun Mar 30 08:28:11 CEST 2008
432 - added aio_sync.
433 - added aio_pathsync.
434 - fix prototypes of (void) functions.
435
4362.51 Sat Oct 6 16:04:54 CEST 2007
437 - perlio isn't generally threadsafe, so aio_close could not work reliably.
438 aio_close now tries a safe hack that might not be that asynchronous
439 (see the manpage for details).
440 - discard callback return values as to not grow the stack endlessly
441 when poll_cb handles many requests without returning.
442 - minor code cleanups.
8 443
92.5 Thu Oct 4 14:49:08 CEST 2007 4442.5 Thu Oct 4 14:49:08 CEST 2007
10 - replaced _fd2fh with faster xs code. 445 - replaced _fd2fh with faster xs code.
11 - aio_close will now try to do "the right thing" and thus might 446 - aio_close will now try to do "the right thing" and thus might
12 work sensibly for the very first time. 447 work sensibly for the very first time.

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