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Comparing IO-AIO/Changes (file contents):
Revision 1.142 by root, Sat Apr 26 12:00:23 2008 UTC vs.
Revision 1.322 by root, Thu Jun 25 13:34:28 2015 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: 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 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
34
35TODO: rewrite rmtree et al. to support working directories (also speed them up)
36TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
37
38 - add IO::AIO::pipe2 function.
39 - use NO_INIT where applicable.
40 - update libecb.
41 - added stability canary support.
42 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
43 constants.
44
454.32 Wed Feb 11 20:32:11 CET 2015
46 - replace off_t by STRLEN where appropriate, should not result in
47 user-visible changes.
48 - update ecb.h for C11 compatibility.
49
504.31 Tue Jun 3 03:29:27 CEST 2014
51 - work around more 5.20 bugs. backwards compatibility my ass.
52
534.3 Fri Apr 11 06:22:38 CEST 2014
54 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
55 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
56 in 5.18. What's so attractive about giving a shit about backwards
57 compatibility - I will never understand.
58
594.2 Sat Jan 25 01:13:14 CET 2014
60 - aio_group could corrupt memory because it didn't restore
61 the stack after req_submit.
62 - be more careful on (e.g. permission) errors in bin/treescan.
63 - work around changes in ExtUtils::MakeMaker.
64 - (libeio) implement aio_realpath for win32.
65 - (xthread) work around compile time bugs in ptw32.
66 - added IO::AIO::pipesize.
67 - (libecb) insignificant update.
68
694.19 Sun Jan 6 12:47:26 CET 2013
70 - avoid endless loop in fiemap with some XFS files.
71 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
72 and call rename/rmdir instead of renameat/unlinkat.
73
744.18 Thu Oct 11 07:01:26 CEST 2012
75 - fix unintended xthread_create by intentionalising it :)
76
774.17 Thu Oct 11 05:19:47 CEST 2012
78 - rename aio_fallocate to aio_allocate, to match documentation.
79 - add list of linux fsid values to aio_statvfs docs.
80 - work around a bug in btrfs' FIEMAP ioctl implementation.
81 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
82 as per unix spec.
83
844.16 Tue Aug 14 05:39:03 CEST 2012
85 - aio_statvfs was wromgly marked for wd emulation, causing
86 it to malfunction for paths.
87 - fix a crash in aio_fiemap, when used on ranges without any
88 extents.
89 - work around linux kernel bug (at least in 3.2): kernel might
90 trash fiemap input arguments.
91 - work around linux kernel bug (at least in 3.2): kernel does not
92 set FIEMAP_EXTENT_LAST on last segment.
93 - work around linux kernel bug (at least in 3.2): kernel silently
94 truncates segment count if a file.
95 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
96 to quick overview.
97 - splice can corrupt data.
98 - (libeio) remove pread/pwrite emulation.
99 - do not grow mmaped scalars in aio_read.
100 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
101 - provide pread/pwrite for win32, making it link again on native win32.
102
1034.15 Tue Apr 10 06:59:00 CEST 2012
104 - always include linux/types.h for fiemap, for compatibility to
105 ancient systems (Paul Howarth).
106 - experimental support for IO::AIO::splice and ::tee (no aio_...).
107 - provide SEEK_HOLE and SEEK_DATA, if available.
108 - work around (again!) an immensely stupid bug in RHEL, defining
109 autoconf macros in linux system headers (analysed by Paul Howarth).
110
1114.14 Sat Apr 7 02:45:18 CEST 2012
112 - fix stat structure usage on windows, which caused bogus stat results.
113 - (libeio) make readahead emulation behave more like actual readahead by never failing.
114 - new request aio_seek.
115 - new request aio_fiemap.
116 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
117
1184.12 Fri Dec 30 08:51:25 CET 2011
119 - realpath would return a random value if the name was too long,
120 instead of -1.
121 - port to c89.
122
1234.11 Mon Oct 10 00:24:11 CEST 2011
124 - libeio didn't compile on !linux (Paul Howarth).
125
1264.1 Sun Oct 9 10:24:11 CEST 2011
127 - IO::AIO did access uninitialised memory on unsuccessful stats.
128 - (libeio) added syncfs syscall wrapper.
129 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
130 - (libeio) support multiple indepenent working directories.
131 - applied speling corrections by Nicholas Bamber.
132 - tune treescan #threads and #outstanding requests a bit.
133 - reduce the number of file descriptors in use at any one time
134 in treescan, to avoid running out of them (and using too much ram).
135 - take advantage of working directoriy abstractions
136 in aio_scandir and treescan.
137 - reduce compiled size by ~10% by not inlining some key functionality.
138 - added --progress switch to treescan.
139
1404.0 Mon Jul 18 05:01:10 CEST 2011
141 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
142 see FORK BEHAVIOUR in manpage for details.
143 - passes testsuite on win32 now and may actually work
144 (activestate 5.10.1 / MSVC6, YMMV).
145 - (libeio) fix a deadlock where a wakeup signal could be missed when
146 a timeout occured at the same time.
147 - (libeio) added realpath.
148 - (libeio) added fallocate.
149 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
150 - (libeio) do not acquire any locks when forking.
151 - (libeio) use fewer time() syscalls when waiting for new requests.
152
1533.93 Wed Jun 29 23:44:18 CEST 2011
154 - ECB.H WAS MISSING.
155
1563.92 Wed Jun 29 14:45:41 CEST 2011
157 - ecb.h was missing.
158
1593.91 Wed Jun 29 13:24:42 CEST 2011
160 - (libeio) work around a Linux (and likely FreeBSD and other
161 kernels) bug where sendfile would not transfer all the requested
162 bytes on large transfers, using a heuristic.
163 - buggy sendfile caused aio_move/copy to sometimes fail for big
164 files (fortunately it checks that the whole file has been
165 transferred...)
166 - use libecb for higher performance and higher portability.
167 - (libeio) disable sendfile on darwin, it's too broken.
168 - disable fork tests on !linux, as only linux supports mixing
169 pthread and fork in perl.
170 - document the fact that fork doesn't work anymore when using
171 this module, on anything !GNU/Linux.
172 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
173 run on a 0.1MHz cpu. Or so.
174
1753.9 Fri May 27 02:43:47 CEST 2011
176 - (libeio) fix memory corruption in aio_readdirx for the flags
177 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
178 - add lots of newer POSIX and GNU/Linux-specific open
179 flags.
180
1813.8 Sun Mar 27 12:25:33 CEST 2011
182 - use nonstandard but maybe-working-on-bsd fork technique.
183 - support a max_idle value of 0.
184 - support setting of idle timeout value (IO::AIO::idle_timeout).
185
1863.72 Fri Feb 11 04:25:38 CET 2011
187 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
188 - aio_mknod always used a dev_t value of 0.
189 - new treescan option: --grep.
190 - add more S_IF macros, and major/minor/makedev "macros".
191
1923.71 Thu Dec 30 08:18:46 CET 2010
193 - the numerical result value passed to callbacks did not stringify
194 correctly, due to internal reuse and failure to reset the sv flags.
195 - actually test for posix_[mf]advise, as at least uClibc defines
196 _POSIX_ADVISORY_INFO without actually having any of the required
197 funcitonality. ugh.
198
1993.7 Mon Nov 1 23:00:34 CET 2010
200 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
201 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
202 - document the sad state of affairs w.r.t. pthread on many bsds.
203 - do not enable mmap on systems without _POSIX_MAPPED_FILES
204 (openbsd 4.8).
205 - do not leak memory in IO::AIO::mmap when the scalar already
206 had string-data.
207 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
208 them.
209 - cache the result IV, for a minor speedup in the common case.
210 - croak when an mmapped-scalar changes location, to detect
211 user-errors better.
212 - fix aio_readlink prototype.
213
2143.65 Wed Mar 31 02:45:05 CEST 2010
215 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
216 cut off long pathnames in aio_readlink (based on patch by
217 Rasmus Andersson).
218 - a double fork partially killed the event pipe (great testcase
219 by dormando). affects IO::AIO, BDB and Async::Interrupt.
220 - suck steve's dick and rename our symbols to avoid colliding
221 with nonstandard identifier spam on the broken os x pseudo-os.
222 affects IO::AIO and BDB.
223
2243.6 Mon Jan 11 00:43:39 CET 2010
225 - (libeio) more fixes for the freebsd/apple sendfile - broken by
226 manpage standards, but apparently correct accoridng to actual
227 kernel sources.
228 - add IO::AIO::mmap/munmap support.
229 - add IO::AIO::m(un)lockall support.
230 - clean up manpage.
231
2323.5 Thu Jan 7 21:25:04 CET 2010
233 - (liebio) fix freebsd sendfile (Vanilla Hsu).
234 - (libeio) also fix darwin sendfile that suffered from a similar bug.
235 - add aio_statvfs as interface to statvfs/fstatvfs.
236 - work around buggy symlink() on cygwin in the testsuite.
237 - wtf. freebsd-8.0 actually passes the testsuite! I knew
238 they could implement fork and semaphores one day! cheers!
239
2403.4 Sat Jan 2 15:13:04 CET 2010
241 - (libeio) max_poll_time was not properly converted to ticks.
242 - clarify cancel_subs description.
243 - IO::AIO::sendfile did not actually return the return value
244 from the sendfile call.
245 - implement aio_msync, aio_mtouch.
246 - (libeio) tentatively support darwin in sendfile.
247
2483.31 Thu Nov 12 02:14:29 CET 2009
249 - fix result status documentation of aio_copy, aio_move.
250 - speed up object creation considerably by avoiding
251 hash lookups.
252
2533.3 Wed Aug 5 13:52:58 CEST 2009
254 - use common::sense.
255 - use common schmorp.h header.
256 - allow integers (file descriptors) in addition to file handles.
257 - take advantage of linux' eventfd (but it seems slower on smp?).
258 - use poll not select on posix platforms.
259
2603.261 Wed Jul 1 10:11:51 CEST 2009
261 - more 0S X workarounds (patch by Tokuhiro Matsuno).
262
2633.26 Tue Jun 30 09:33:26 CEST 2009
264 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
265 try to work around this horribly broken OS in a somewhat hackish
266 way. might help other os's too.
267
2683.25 Sat Jun 27 05:18:26 CEST 2009
269 - added IO::AIO::fadvise and IO::AIO::sendfile.
270 - (libeio) replaced quicksort+insertion sort by a tuned radix
271 sort + insertion sort, resulting in comparable runtime (usually
272 faster) to the old version, but without any ill side effects on
273 degenerated (for quicksort) data.
274 - (libeio) correctly sort dirs by inodes if we have perfect type
275 knowledge and DIRS_FIRST is used.
276 - (libeio) internally the wrong DT_* constants were used, but no
277 known system has differing EIO_DT_*/DT_* values, so not an issue.
278 - removed a (harmless) assert that was left over on the code
279 but should not have been.
280 - use more correct types (change IO length from IV to VAL64,
281 which makes a difference on systems without 64 bit perls).
282
2833.23 Sat Jun 13 16:57:58 CEST 2009
284 - fix off-by-one bug in aio_readdir that was introduced in the
285 rushed 3.22 release.
286
2873.22 Sat Jun 13 15:32:40 CEST 2009
288 - speed up readdirx sort algorithm slightly.
289 - bin/treescan was missing from distro tarball.
290
2913.21 Fri Jun 12 18:45:53 CEST 2009
292 - new options --dirs and --files for treescan.
293 - install bin/treescan by default.
294 - (libeio) aio_readdir can now be cancelled while executing.
295 - fix a printf format string for 64 bit systems (could lead
296 to problems on big endian 64 bit systems).
297 - do not use qsort() but our own algorithm: glibc initialises
298 the whole locale and I/O subsystem inside qsort, causing
299 a stack overflow on 32 bit machines. The new sort uses much less
300 stack and is more than twice as fast in typical situations.
301
3023.2 Sun Jun 7 20:30:05 CEST 2009
303 - (libeio) pwrite emulation was even more flawed than intended and did
304 not restore the file offset.
305 - add aio_readdirx, which can return inode and filetype and sort
306 the names in various ways.
307 - unfortunately, utime, chmod, chown on an open file that has just
308 been written can easily block, which caused aio_copy to block the
309 process. no more!
310 - no longer rely on dst path in aio_copy when futime is available.
311
3123.19 Tue Apr 21 22:05:21 CEST 2009
313 - more perl 5.10 workarounds for aio_read and write.
314 - aio_write no longer modifies the sv (if possible).
315 - aio_read now works correctly with magic values.
316
3173.18 Sun Apr 19 21:17:32 CEST 2009
318 - better diagnostics when some aio_* functions get passed an illegal fh.
319 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
320
3213.17 Thu Nov 20 08:45:36 CET 2008
322 - (libeio) added aio_sync_file_range (untested).
323 - add aio_busy to @IO::AIO::AIO_REQ.
324
3253.16 Wed Oct 22 18:28:01 CEST 2008
326 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
327 part to improve portability to perl 5.8 (reported by szymon).
328
3293.15 Mon Oct 13 00:39:55 CEST 2008
330 - automatic removal of feeders was broken.
331 - (libeio) use a more robust method to detect whether a feeder
332 has added something to the group or not.
333
3343.1 Thu Oct 2 13:34:40 CEST 2008
335 - pre-deref the passed callback object, for increased speed
336 and decreased memory usage.
337 - call on_next_submit callback even for aio_group - impact unknown,
338 but seems more correct.
339 - $req->cb now returns the original callback.
340 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
341 requiring a thread switch.
342 - (libeio) status code of aio_futime and aio_utime was always passed 0.
343 - do some other ยต-optimisations.
344
3453.07 Sat Aug 2 16:06:13 CEST 2008
346 - do not include LIBS in autoconf tests.
347
3483.06 Tue Jul 15 12:41:32 CEST 2008
349 - move preadwritelock definition before it's first reference,
350 to make it compile again on broken platforms (they still exist)
351 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
352
3533.05 Thu Jun 19 23:23:52 CEST 2008
354 - work around perl overriding readdir etc. with thread-unsafe
355 (sic!) versions.
356
3573.04 Wed Jun 18 01:35:38 CEST 2008
358 - (libeio) fix eio_mknod, which confused it's arguments.
359 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
360 is stupid.
361 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
362 - (libeio) fix a bug that could potentially cause IO::AIO
363 not to get initialised properly.
364
3653.03 Thu May 29 05:33:30 CEST 2008
366 - (libeio) correctly call pthread_attr_destroy ().
367 - (libeio) work around broken bsd headers once more.
368 - reduce shared library size again by not including wrappers.
369 - max_outstanding could cause poll to enter a busy-waiting loop.
370 - document the new IO::AIO::poll_cb result value.
371
3723.02 Mon May 12 02:32:02 CEST 2008
373 - fix a memory leak on aio_readlink.
374 - bring back working fchmod.
375 - nop and busy now set result to 0.
376 - set errno to ENOMEM when allocation fails.
377
3783.01 Sun May 11 03:07:03 CEST 2008
379 - (libeio) make it compile on systems without readahead or readdir_r.
380 - (libeio) improve configure check for readahead availability.
381 - do not try to link against -lrt.
382 - use a separate configure script for IO::AIO (not the libeio one).
383
3843.0 Sun May 11 00:57:14 CEST 2008
385 - added bin/treescan to the distribution.
386 - switched to using libeio.
387 - LOTS OF INCOMPATIBLE CHANGES:
388 - remove signal functionality, it is not worth the effort.
389 - max_outstanding no longer returns the previous number of requests.
390 - poll_cb no longer returns number of requests.
8 391
92.62 Sat Apr 26 13:59:33 CEST 2008 3922.62 Sat Apr 26 13:59:33 CEST 2008
10 - port to solaris perls configured for old posix 393 - port to solaris perls configured for old posix
11 (analysed by Jost Krieger). 394 (analysed by Jost Krieger).
12 - keep a reference to the perl filehandle object in aio_close, 395 - keep a reference to the perl filehandle object in aio_close,

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