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Comparing IO-AIO/Changes (file contents):
Revision 1.133 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.325 by root, Mon Jan 18 11:53:09 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
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?
37TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611)
38 http://www.openwall.com/lists/musl/2013/02/23/4
39
404.33 Mon Jan 18 12:50:10 CET 2016
41 - add IO::AIO::pipe2 function.
42 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
43 constants.
44 - added support for O_TMPFILE and O_PATH constants.
45 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
46 consdtants, whether they can be sensibly used or not.
47 - use NO_INIT where applicable.
48 - update libecb.
49 - added stability canary support.
50 - updated linux super magic table to 4.3.3.
51
524.32 Wed Feb 11 20:32:11 CET 2015
53 - replace off_t by STRLEN where appropriate, should not result in
54 user-visible changes.
55 - update ecb.h for C11 compatibility.
56
574.31 Tue Jun 3 03:29:27 CEST 2014
58 - work around more 5.20 bugs. backwards compatibility my ass.
59
604.3 Fri Apr 11 06:22:38 CEST 2014
61 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
62 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
63 in 5.18. What's so attractive about giving a shit about backwards
64 compatibility - I will never understand.
65
664.2 Sat Jan 25 01:13:14 CET 2014
67 - aio_group could corrupt memory because it didn't restore
68 the stack after req_submit.
69 - be more careful on (e.g. permission) errors in bin/treescan.
70 - work around changes in ExtUtils::MakeMaker.
71 - (libeio) implement aio_realpath for win32.
72 - (xthread) work around compile time bugs in ptw32.
73 - added IO::AIO::pipesize.
74 - (libecb) insignificant update.
75
764.19 Sun Jan 6 12:47:26 CET 2013
77 - avoid endless loop in fiemap with some XFS files.
78 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
79 and call rename/rmdir instead of renameat/unlinkat.
80
814.18 Thu Oct 11 07:01:26 CEST 2012
82 - fix unintended xthread_create by intentionalising it :)
83
844.17 Thu Oct 11 05:19:47 CEST 2012
85 - rename aio_fallocate to aio_allocate, to match documentation.
86 - add list of linux fsid values to aio_statvfs docs.
87 - work around a bug in btrfs' FIEMAP ioctl implementation.
88 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
89 as per unix spec.
90
914.16 Tue Aug 14 05:39:03 CEST 2012
92 - aio_statvfs was wromgly marked for wd emulation, causing
93 it to malfunction for paths.
94 - fix a crash in aio_fiemap, when used on ranges without any
95 extents.
96 - work around linux kernel bug (at least in 3.2): kernel might
97 trash fiemap input arguments.
98 - work around linux kernel bug (at least in 3.2): kernel does not
99 set FIEMAP_EXTENT_LAST on last segment.
100 - work around linux kernel bug (at least in 3.2): kernel silently
101 truncates segment count if a file.
102 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
103 to quick overview.
104 - splice can corrupt data.
105 - (libeio) remove pread/pwrite emulation.
106 - do not grow mmaped scalars in aio_read.
107 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
108 - provide pread/pwrite for win32, making it link again on native win32.
109
1104.15 Tue Apr 10 06:59:00 CEST 2012
111 - always include linux/types.h for fiemap, for compatibility to
112 ancient systems (Paul Howarth).
113 - experimental support for IO::AIO::splice and ::tee (no aio_...).
114 - provide SEEK_HOLE and SEEK_DATA, if available.
115 - work around (again!) an immensely stupid bug in RHEL, defining
116 autoconf macros in linux system headers (analysed by Paul Howarth).
117
1184.14 Sat Apr 7 02:45:18 CEST 2012
119 - fix stat structure usage on windows, which caused bogus stat results.
120 - (libeio) make readahead emulation behave more like actual readahead by never failing.
121 - new request aio_seek.
122 - new request aio_fiemap.
123 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
124
1254.12 Fri Dec 30 08:51:25 CET 2011
126 - realpath would return a random value if the name was too long,
127 instead of -1.
128 - port to c89.
129
1304.11 Mon Oct 10 00:24:11 CEST 2011
131 - libeio didn't compile on !linux (Paul Howarth).
132
1334.1 Sun Oct 9 10:24:11 CEST 2011
134 - IO::AIO did access uninitialised memory on unsuccessful stats.
135 - (libeio) added syncfs syscall wrapper.
136 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
137 - (libeio) support multiple indepenent working directories.
138 - applied speling corrections by Nicholas Bamber.
139 - tune treescan #threads and #outstanding requests a bit.
140 - reduce the number of file descriptors in use at any one time
141 in treescan, to avoid running out of them (and using too much ram).
142 - take advantage of working directoriy abstractions
143 in aio_scandir and treescan.
144 - reduce compiled size by ~10% by not inlining some key functionality.
145 - added --progress switch to treescan.
146
1474.0 Mon Jul 18 05:01:10 CEST 2011
148 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
149 see FORK BEHAVIOUR in manpage for details.
150 - passes testsuite on win32 now and may actually work
151 (activestate 5.10.1 / MSVC6, YMMV).
152 - (libeio) fix a deadlock where a wakeup signal could be missed when
153 a timeout occured at the same time.
154 - (libeio) added realpath.
155 - (libeio) added fallocate.
156 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
157 - (libeio) do not acquire any locks when forking.
158 - (libeio) use fewer time() syscalls when waiting for new requests.
159
1603.93 Wed Jun 29 23:44:18 CEST 2011
161 - ECB.H WAS MISSING.
162
1633.92 Wed Jun 29 14:45:41 CEST 2011
164 - ecb.h was missing.
165
1663.91 Wed Jun 29 13:24:42 CEST 2011
167 - (libeio) work around a Linux (and likely FreeBSD and other
168 kernels) bug where sendfile would not transfer all the requested
169 bytes on large transfers, using a heuristic.
170 - buggy sendfile caused aio_move/copy to sometimes fail for big
171 files (fortunately it checks that the whole file has been
172 transferred...)
173 - use libecb for higher performance and higher portability.
174 - (libeio) disable sendfile on darwin, it's too broken.
175 - disable fork tests on !linux, as only linux supports mixing
176 pthread and fork in perl.
177 - document the fact that fork doesn't work anymore when using
178 this module, on anything !GNU/Linux.
179 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
180 run on a 0.1MHz cpu. Or so.
181
1823.9 Fri May 27 02:43:47 CEST 2011
183 - (libeio) fix memory corruption in aio_readdirx for the flags
184 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
185 - add lots of newer POSIX and GNU/Linux-specific open
186 flags.
187
1883.8 Sun Mar 27 12:25:33 CEST 2011
189 - use nonstandard but maybe-working-on-bsd fork technique.
190 - support a max_idle value of 0.
191 - support setting of idle timeout value (IO::AIO::idle_timeout).
192
1933.72 Fri Feb 11 04:25:38 CET 2011
194 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
195 - aio_mknod always used a dev_t value of 0.
196 - new treescan option: --grep.
197 - add more S_IF macros, and major/minor/makedev "macros".
198
1993.71 Thu Dec 30 08:18:46 CET 2010
200 - the numerical result value passed to callbacks did not stringify
201 correctly, due to internal reuse and failure to reset the sv flags.
202 - actually test for posix_[mf]advise, as at least uClibc defines
203 _POSIX_ADVISORY_INFO without actually having any of the required
204 funcitonality. ugh.
205
2063.7 Mon Nov 1 23:00:34 CET 2010
207 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
208 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
209 - document the sad state of affairs w.r.t. pthread on many bsds.
210 - do not enable mmap on systems without _POSIX_MAPPED_FILES
211 (openbsd 4.8).
212 - do not leak memory in IO::AIO::mmap when the scalar already
213 had string-data.
214 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
215 them.
216 - cache the result IV, for a minor speedup in the common case.
217 - croak when an mmapped-scalar changes location, to detect
218 user-errors better.
219 - fix aio_readlink prototype.
220
2213.65 Wed Mar 31 02:45:05 CEST 2010
222 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
223 cut off long pathnames in aio_readlink (based on patch by
224 Rasmus Andersson).
225 - a double fork partially killed the event pipe (great testcase
226 by dormando). affects IO::AIO, BDB and Async::Interrupt.
227 - suck steve's dick and rename our symbols to avoid colliding
228 with nonstandard identifier spam on the broken os x pseudo-os.
229 affects IO::AIO and BDB.
230
2313.6 Mon Jan 11 00:43:39 CET 2010
232 - (libeio) more fixes for the freebsd/apple sendfile - broken by
233 manpage standards, but apparently correct accoridng to actual
234 kernel sources.
235 - add IO::AIO::mmap/munmap support.
236 - add IO::AIO::m(un)lockall support.
237 - clean up manpage.
238
2393.5 Thu Jan 7 21:25:04 CET 2010
240 - (liebio) fix freebsd sendfile (Vanilla Hsu).
241 - (libeio) also fix darwin sendfile that suffered from a similar bug.
242 - add aio_statvfs as interface to statvfs/fstatvfs.
243 - work around buggy symlink() on cygwin in the testsuite.
244 - wtf. freebsd-8.0 actually passes the testsuite! I knew
245 they could implement fork and semaphores one day! cheers!
246
2473.4 Sat Jan 2 15:13:04 CET 2010
248 - (libeio) max_poll_time was not properly converted to ticks.
249 - clarify cancel_subs description.
250 - IO::AIO::sendfile did not actually return the return value
251 from the sendfile call.
252 - implement aio_msync, aio_mtouch.
253 - (libeio) tentatively support darwin in sendfile.
254
2553.31 Thu Nov 12 02:14:29 CET 2009
256 - fix result status documentation of aio_copy, aio_move.
257 - speed up object creation considerably by avoiding
258 hash lookups.
259
2603.3 Wed Aug 5 13:52:58 CEST 2009
261 - use common::sense.
262 - use common schmorp.h header.
263 - allow integers (file descriptors) in addition to file handles.
264 - take advantage of linux' eventfd (but it seems slower on smp?).
265 - use poll not select on posix platforms.
266
2673.261 Wed Jul 1 10:11:51 CEST 2009
268 - more 0S X workarounds (patch by Tokuhiro Matsuno).
269
2703.26 Tue Jun 30 09:33:26 CEST 2009
271 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
272 try to work around this horribly broken OS in a somewhat hackish
273 way. might help other os's too.
274
2753.25 Sat Jun 27 05:18:26 CEST 2009
276 - added IO::AIO::fadvise and IO::AIO::sendfile.
277 - (libeio) replaced quicksort+insertion sort by a tuned radix
278 sort + insertion sort, resulting in comparable runtime (usually
279 faster) to the old version, but without any ill side effects on
280 degenerated (for quicksort) data.
281 - (libeio) correctly sort dirs by inodes if we have perfect type
282 knowledge and DIRS_FIRST is used.
283 - (libeio) internally the wrong DT_* constants were used, but no
284 known system has differing EIO_DT_*/DT_* values, so not an issue.
285 - removed a (harmless) assert that was left over on the code
286 but should not have been.
287 - use more correct types (change IO length from IV to VAL64,
288 which makes a difference on systems without 64 bit perls).
289
2903.23 Sat Jun 13 16:57:58 CEST 2009
291 - fix off-by-one bug in aio_readdir that was introduced in the
292 rushed 3.22 release.
293
2943.22 Sat Jun 13 15:32:40 CEST 2009
295 - speed up readdirx sort algorithm slightly.
296 - bin/treescan was missing from distro tarball.
297
2983.21 Fri Jun 12 18:45:53 CEST 2009
299 - new options --dirs and --files for treescan.
300 - install bin/treescan by default.
301 - (libeio) aio_readdir can now be cancelled while executing.
302 - fix a printf format string for 64 bit systems (could lead
303 to problems on big endian 64 bit systems).
304 - do not use qsort() but our own algorithm: glibc initialises
305 the whole locale and I/O subsystem inside qsort, causing
306 a stack overflow on 32 bit machines. The new sort uses much less
307 stack and is more than twice as fast in typical situations.
308
3093.2 Sun Jun 7 20:30:05 CEST 2009
310 - (libeio) pwrite emulation was even more flawed than intended and did
311 not restore the file offset.
312 - add aio_readdirx, which can return inode and filetype and sort
313 the names in various ways.
314 - unfortunately, utime, chmod, chown on an open file that has just
315 been written can easily block, which caused aio_copy to block the
316 process. no more!
317 - no longer rely on dst path in aio_copy when futime is available.
318
3193.19 Tue Apr 21 22:05:21 CEST 2009
320 - more perl 5.10 workarounds for aio_read and write.
321 - aio_write no longer modifies the sv (if possible).
322 - aio_read now works correctly with magic values.
323
3243.18 Sun Apr 19 21:17:32 CEST 2009
325 - better diagnostics when some aio_* functions get passed an illegal fh.
326 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
327
3283.17 Thu Nov 20 08:45:36 CET 2008
329 - (libeio) added aio_sync_file_range (untested).
330 - add aio_busy to @IO::AIO::AIO_REQ.
331
3323.16 Wed Oct 22 18:28:01 CEST 2008
333 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
334 part to improve portability to perl 5.8 (reported by szymon).
335
3363.15 Mon Oct 13 00:39:55 CEST 2008
337 - automatic removal of feeders was broken.
338 - (libeio) use a more robust method to detect whether a feeder
339 has added something to the group or not.
340
3413.1 Thu Oct 2 13:34:40 CEST 2008
342 - pre-deref the passed callback object, for increased speed
343 and decreased memory usage.
344 - call on_next_submit callback even for aio_group - impact unknown,
345 but seems more correct.
346 - $req->cb now returns the original callback.
347 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
348 requiring a thread switch.
349 - (libeio) status code of aio_futime and aio_utime was always passed 0.
350 - do some other ยต-optimisations.
351
3523.07 Sat Aug 2 16:06:13 CEST 2008
353 - do not include LIBS in autoconf tests.
354
3553.06 Tue Jul 15 12:41:32 CEST 2008
356 - move preadwritelock definition before it's first reference,
357 to make it compile again on broken platforms (they still exist)
358 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
359
3603.05 Thu Jun 19 23:23:52 CEST 2008
361 - work around perl overriding readdir etc. with thread-unsafe
362 (sic!) versions.
363
3643.04 Wed Jun 18 01:35:38 CEST 2008
365 - (libeio) fix eio_mknod, which confused it's arguments.
366 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
367 is stupid.
368 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
369 - (libeio) fix a bug that could potentially cause IO::AIO
370 not to get initialised properly.
371
3723.03 Thu May 29 05:33:30 CEST 2008
373 - (libeio) correctly call pthread_attr_destroy ().
374 - (libeio) work around broken bsd headers once more.
375 - reduce shared library size again by not including wrappers.
376 - max_outstanding could cause poll to enter a busy-waiting loop.
377 - document the new IO::AIO::poll_cb result value.
378
3793.02 Mon May 12 02:32:02 CEST 2008
380 - fix a memory leak on aio_readlink.
381 - bring back working fchmod.
382 - nop and busy now set result to 0.
383 - set errno to ENOMEM when allocation fails.
384
3853.01 Sun May 11 03:07:03 CEST 2008
386 - (libeio) make it compile on systems without readahead or readdir_r.
387 - (libeio) improve configure check for readahead availability.
388 - do not try to link against -lrt.
389 - use a separate configure script for IO::AIO (not the libeio one).
390
3913.0 Sun May 11 00:57:14 CEST 2008
392 - added bin/treescan to the distribution.
393 - switched to using libeio.
394 - LOTS OF INCOMPATIBLE CHANGES:
395 - remove signal functionality, it is not worth the effort.
396 - max_outstanding no longer returns the previous number of requests.
397 - poll_cb no longer returns number of requests.
398
3992.62 Sat Apr 26 13:59:33 CEST 2008
400 - port to solaris perls configured for old posix
401 (analysed by Jost Krieger).
402 - keep a reference to the perl filehandle object in aio_close,
403 so it doesn't get closed prematurely, leading to ugly races.
404
4052.61 Wed Apr 16 18:45:02 CEST 2008
406 - fix treescan output duplication and improve output ordering.
407 also display files given on the commandline.
408 - use a different algorithm for aio_close that is faster
409 and probably has even lower chances of blocking.
410 - do our own stack memory management for threads - linux
411 allocates outrageous amounts of VM (not so bad unless you
412 use mlockall...), which severely limits the number of threads
413 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
414 and 4096 * sizeof (long) (usually this is 16..64k).
415
4162.6 Sun Mar 30 08:28:11 CEST 2008
417 - added aio_sync.
418 - added aio_pathsync.
419 - fix prototypes of (void) functions.
8 420
92.51 Sat Oct 6 16:04:54 CEST 2007 4212.51 Sat Oct 6 16:04:54 CEST 2007
10 - perlio isn't generally threadsafe, so aio_close could not work reliably. 422 - perlio isn't generally threadsafe, so aio_close could not work reliably.
11 aio_close now tries a safe hack that might not be that asynchronous 423 aio_close now tries a safe hack that might not be that asynchronous
12 (see the manpage for details). 424 (see the manpage for details).

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