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Comparing IO-AIO/Changes (file contents):
Revision 1.135 by root, Sun Dec 2 21:51:37 2007 UTC vs.
Revision 1.332 by root, Tue Aug 9 11:37:53 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: renameat2 RENAME_EXCHANGE, RENAME_NOREPLACE, RENAME_EXCHANGE
29TODO: fcntl F_GETLKP/F_SETLKP/F_SETLKPW, http://lwn.net/Articles/586904/
30TODO: linkat + AT_EMPTY_PATH
31TODO: name_to_handle_At + open_by_handle_at = clone fds
32TODO: lchown
33TODO: mount/umount2/MS_* flags
8 34
92.6 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
39TODO: aio_fcntl/ioctl test.
40TODO: copy_file_range, copy_file_range
41TODO: FIDEDUPERANGE, file_ioctl.c
42TODO: mincore
43
44 - add MADV_FREE constant.
45 - add a bunch of (mostly linux-specific) constants for use in ioctls
46 (see aio_ioctl docs).
47
484.34 Sun May 1 19:18:24 CEST 2016
49 - def0.h was not properly generated during previous release, causing
50 compile errors on various platforms.
51 - major/minor were accidentally switched (reported by Alexander Lishenyuk).
52 - removed duplicate definition of MAP_HUGETLB, that was found due to
53 a bug in Perl::Tidy (testcase by alaska332@gmail.com).
54 - added (untested!) aio_fcntl, aio_ioctl requests.
55 - (libeio) names set via prctl are truncated to 15 chars + nul, not 16,
56 as manpages-dev originally claimed.
57
584.33 Mon Jan 18 12:50:10 CET 2016
59 - add IO::AIO::pipe2 function.
60 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
61 constants.
62 - added support for O_TMPFILE and O_PATH constants.
63 - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK
64 consdtants, whether they can be sensibly used or not.
65 - use NO_INIT where applicable.
66 - update libecb.
67 - added stability canary support.
68 - updated linux super magic table to 4.3.3.
69
704.32 Wed Feb 11 20:32:11 CET 2015
71 - replace off_t by STRLEN where appropriate, should not result in
72 user-visible changes.
73 - update ecb.h for C11 compatibility.
74
754.31 Tue Jun 3 03:29:27 CEST 2014
76 - work around more 5.20 bugs. backwards compatibility my ass.
77
784.3 Fri Apr 11 06:22:38 CEST 2014
79 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
80 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
81 in 5.18. What's so attractive about giving a shit about backwards
82 compatibility - I will never understand.
83
844.2 Sat Jan 25 01:13:14 CET 2014
85 - aio_group could corrupt memory because it didn't restore
86 the stack after req_submit.
87 - be more careful on (e.g. permission) errors in bin/treescan.
88 - work around changes in ExtUtils::MakeMaker.
89 - (libeio) implement aio_realpath for win32.
90 - (xthread) work around compile time bugs in ptw32.
91 - added IO::AIO::pipesize.
92 - (libecb) insignificant update.
93
944.19 Sun Jan 6 12:47:26 CET 2013
95 - avoid endless loop in fiemap with some XFS files.
96 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
97 and call rename/rmdir instead of renameat/unlinkat.
98
994.18 Thu Oct 11 07:01:26 CEST 2012
100 - fix unintended xthread_create by intentionalising it :)
101
1024.17 Thu Oct 11 05:19:47 CEST 2012
103 - rename aio_fallocate to aio_allocate, to match documentation.
104 - add list of linux fsid values to aio_statvfs docs.
105 - work around a bug in btrfs' FIEMAP ioctl implementation.
106 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
107 as per unix spec.
108
1094.16 Tue Aug 14 05:39:03 CEST 2012
110 - aio_statvfs was wromgly marked for wd emulation, causing
111 it to malfunction for paths.
112 - fix a crash in aio_fiemap, when used on ranges without any
113 extents.
114 - work around linux kernel bug (at least in 3.2): kernel might
115 trash fiemap input arguments.
116 - work around linux kernel bug (at least in 3.2): kernel does not
117 set FIEMAP_EXTENT_LAST on last segment.
118 - work around linux kernel bug (at least in 3.2): kernel silently
119 truncates segment count if a file.
120 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
121 to quick overview.
122 - splice can corrupt data.
123 - (libeio) remove pread/pwrite emulation.
124 - do not grow mmaped scalars in aio_read.
125 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
126 - provide pread/pwrite for win32, making it link again on native win32.
127
1284.15 Tue Apr 10 06:59:00 CEST 2012
129 - always include linux/types.h for fiemap, for compatibility to
130 ancient systems (Paul Howarth).
131 - experimental support for IO::AIO::splice and ::tee (no aio_...).
132 - provide SEEK_HOLE and SEEK_DATA, if available.
133 - work around (again!) an immensely stupid bug in RHEL, defining
134 autoconf macros in linux system headers (analysed by Paul Howarth).
135
1364.14 Sat Apr 7 02:45:18 CEST 2012
137 - fix stat structure usage on windows, which caused bogus stat results.
138 - (libeio) make readahead emulation behave more like actual readahead by never failing.
139 - new request aio_seek.
140 - new request aio_fiemap.
141 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
142
1434.12 Fri Dec 30 08:51:25 CET 2011
144 - realpath would return a random value if the name was too long,
145 instead of -1.
146 - port to c89.
147
1484.11 Mon Oct 10 00:24:11 CEST 2011
149 - libeio didn't compile on !linux (Paul Howarth).
150
1514.1 Sun Oct 9 10:24:11 CEST 2011
152 - IO::AIO did access uninitialised memory on unsuccessful stats.
153 - (libeio) added syncfs syscall wrapper.
154 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
155 - (libeio) support multiple indepenent working directories.
156 - applied speling corrections by Nicholas Bamber.
157 - tune treescan #threads and #outstanding requests a bit.
158 - reduce the number of file descriptors in use at any one time
159 in treescan, to avoid running out of them (and using too much ram).
160 - take advantage of working directoriy abstractions
161 in aio_scandir and treescan.
162 - reduce compiled size by ~10% by not inlining some key functionality.
163 - added --progress switch to treescan.
164
1654.0 Mon Jul 18 05:01:10 CEST 2011
166 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
167 see FORK BEHAVIOUR in manpage for details.
168 - passes testsuite on win32 now and may actually work
169 (activestate 5.10.1 / MSVC6, YMMV).
170 - (libeio) fix a deadlock where a wakeup signal could be missed when
171 a timeout occured at the same time.
172 - (libeio) added realpath.
173 - (libeio) added fallocate.
174 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
175 - (libeio) do not acquire any locks when forking.
176 - (libeio) use fewer time() syscalls when waiting for new requests.
177
1783.93 Wed Jun 29 23:44:18 CEST 2011
179 - ECB.H WAS MISSING.
180
1813.92 Wed Jun 29 14:45:41 CEST 2011
182 - ecb.h was missing.
183
1843.91 Wed Jun 29 13:24:42 CEST 2011
185 - (libeio) work around a Linux (and likely FreeBSD and other
186 kernels) bug where sendfile would not transfer all the requested
187 bytes on large transfers, using a heuristic.
188 - buggy sendfile caused aio_move/copy to sometimes fail for big
189 files (fortunately it checks that the whole file has been
190 transferred...)
191 - use libecb for higher performance and higher portability.
192 - (libeio) disable sendfile on darwin, it's too broken.
193 - disable fork tests on !linux, as only linux supports mixing
194 pthread and fork in perl.
195 - document the fact that fork doesn't work anymore when using
196 this module, on anything !GNU/Linux.
197 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
198 run on a 0.1MHz cpu. Or so.
199
2003.9 Fri May 27 02:43:47 CEST 2011
201 - (libeio) fix memory corruption in aio_readdirx for the flags
202 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
203 - add lots of newer POSIX and GNU/Linux-specific open
204 flags.
205
2063.8 Sun Mar 27 12:25:33 CEST 2011
207 - use nonstandard but maybe-working-on-bsd fork technique.
208 - support a max_idle value of 0.
209 - support setting of idle timeout value (IO::AIO::idle_timeout).
210
2113.72 Fri Feb 11 04:25:38 CET 2011
212 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
213 - aio_mknod always used a dev_t value of 0.
214 - new treescan option: --grep.
215 - add more S_IF macros, and major/minor/makedev "macros".
216
2173.71 Thu Dec 30 08:18:46 CET 2010
218 - the numerical result value passed to callbacks did not stringify
219 correctly, due to internal reuse and failure to reset the sv flags.
220 - actually test for posix_[mf]advise, as at least uClibc defines
221 _POSIX_ADVISORY_INFO without actually having any of the required
222 funcitonality. ugh.
223
2243.7 Mon Nov 1 23:00:34 CET 2010
225 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
226 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
227 - document the sad state of affairs w.r.t. pthread on many bsds.
228 - do not enable mmap on systems without _POSIX_MAPPED_FILES
229 (openbsd 4.8).
230 - do not leak memory in IO::AIO::mmap when the scalar already
231 had string-data.
232 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
233 them.
234 - cache the result IV, for a minor speedup in the common case.
235 - croak when an mmapped-scalar changes location, to detect
236 user-errors better.
237 - fix aio_readlink prototype.
238
2393.65 Wed Mar 31 02:45:05 CEST 2010
240 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
241 cut off long pathnames in aio_readlink (based on patch by
242 Rasmus Andersson).
243 - a double fork partially killed the event pipe (great testcase
244 by dormando). affects IO::AIO, BDB and Async::Interrupt.
245 - suck steve's dick and rename our symbols to avoid colliding
246 with nonstandard identifier spam on the broken os x pseudo-os.
247 affects IO::AIO and BDB.
248
2493.6 Mon Jan 11 00:43:39 CET 2010
250 - (libeio) more fixes for the freebsd/apple sendfile - broken by
251 manpage standards, but apparently correct accoridng to actual
252 kernel sources.
253 - add IO::AIO::mmap/munmap support.
254 - add IO::AIO::m(un)lockall support.
255 - clean up manpage.
256
2573.5 Thu Jan 7 21:25:04 CET 2010
258 - (liebio) fix freebsd sendfile (Vanilla Hsu).
259 - (libeio) also fix darwin sendfile that suffered from a similar bug.
260 - add aio_statvfs as interface to statvfs/fstatvfs.
261 - work around buggy symlink() on cygwin in the testsuite.
262 - wtf. freebsd-8.0 actually passes the testsuite! I knew
263 they could implement fork and semaphores one day! cheers!
264
2653.4 Sat Jan 2 15:13:04 CET 2010
266 - (libeio) max_poll_time was not properly converted to ticks.
267 - clarify cancel_subs description.
268 - IO::AIO::sendfile did not actually return the return value
269 from the sendfile call.
270 - implement aio_msync, aio_mtouch.
271 - (libeio) tentatively support darwin in sendfile.
272
2733.31 Thu Nov 12 02:14:29 CET 2009
274 - fix result status documentation of aio_copy, aio_move.
275 - speed up object creation considerably by avoiding
276 hash lookups.
277
2783.3 Wed Aug 5 13:52:58 CEST 2009
279 - use common::sense.
280 - use common schmorp.h header.
281 - allow integers (file descriptors) in addition to file handles.
282 - take advantage of linux' eventfd (but it seems slower on smp?).
283 - use poll not select on posix platforms.
284
2853.261 Wed Jul 1 10:11:51 CEST 2009
286 - more 0S X workarounds (patch by Tokuhiro Matsuno).
287
2883.26 Tue Jun 30 09:33:26 CEST 2009
289 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
290 try to work around this horribly broken OS in a somewhat hackish
291 way. might help other os's too.
292
2933.25 Sat Jun 27 05:18:26 CEST 2009
294 - added IO::AIO::fadvise and IO::AIO::sendfile.
295 - (libeio) replaced quicksort+insertion sort by a tuned radix
296 sort + insertion sort, resulting in comparable runtime (usually
297 faster) to the old version, but without any ill side effects on
298 degenerated (for quicksort) data.
299 - (libeio) correctly sort dirs by inodes if we have perfect type
300 knowledge and DIRS_FIRST is used.
301 - (libeio) internally the wrong DT_* constants were used, but no
302 known system has differing EIO_DT_*/DT_* values, so not an issue.
303 - removed a (harmless) assert that was left over on the code
304 but should not have been.
305 - use more correct types (change IO length from IV to VAL64,
306 which makes a difference on systems without 64 bit perls).
307
3083.23 Sat Jun 13 16:57:58 CEST 2009
309 - fix off-by-one bug in aio_readdir that was introduced in the
310 rushed 3.22 release.
311
3123.22 Sat Jun 13 15:32:40 CEST 2009
313 - speed up readdirx sort algorithm slightly.
314 - bin/treescan was missing from distro tarball.
315
3163.21 Fri Jun 12 18:45:53 CEST 2009
317 - new options --dirs and --files for treescan.
318 - install bin/treescan by default.
319 - (libeio) aio_readdir can now be cancelled while executing.
320 - fix a printf format string for 64 bit systems (could lead
321 to problems on big endian 64 bit systems).
322 - do not use qsort() but our own algorithm: glibc initialises
323 the whole locale and I/O subsystem inside qsort, causing
324 a stack overflow on 32 bit machines. The new sort uses much less
325 stack and is more than twice as fast in typical situations.
326
3273.2 Sun Jun 7 20:30:05 CEST 2009
328 - (libeio) pwrite emulation was even more flawed than intended and did
329 not restore the file offset.
330 - add aio_readdirx, which can return inode and filetype and sort
331 the names in various ways.
332 - unfortunately, utime, chmod, chown on an open file that has just
333 been written can easily block, which caused aio_copy to block the
334 process. no more!
335 - no longer rely on dst path in aio_copy when futime is available.
336
3373.19 Tue Apr 21 22:05:21 CEST 2009
338 - more perl 5.10 workarounds for aio_read and write.
339 - aio_write no longer modifies the sv (if possible).
340 - aio_read now works correctly with magic values.
341
3423.18 Sun Apr 19 21:17:32 CEST 2009
343 - better diagnostics when some aio_* functions get passed an illegal fh.
344 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
345
3463.17 Thu Nov 20 08:45:36 CET 2008
347 - (libeio) added aio_sync_file_range (untested).
348 - add aio_busy to @IO::AIO::AIO_REQ.
349
3503.16 Wed Oct 22 18:28:01 CEST 2008
351 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
352 part to improve portability to perl 5.8 (reported by szymon).
353
3543.15 Mon Oct 13 00:39:55 CEST 2008
355 - automatic removal of feeders was broken.
356 - (libeio) use a more robust method to detect whether a feeder
357 has added something to the group or not.
358
3593.1 Thu Oct 2 13:34:40 CEST 2008
360 - pre-deref the passed callback object, for increased speed
361 and decreased memory usage.
362 - call on_next_submit callback even for aio_group - impact unknown,
363 but seems more correct.
364 - $req->cb now returns the original callback.
365 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
366 requiring a thread switch.
367 - (libeio) status code of aio_futime and aio_utime was always passed 0.
368 - do some other ยต-optimisations.
369
3703.07 Sat Aug 2 16:06:13 CEST 2008
371 - do not include LIBS in autoconf tests.
372
3733.06 Tue Jul 15 12:41:32 CEST 2008
374 - move preadwritelock definition before it's first reference,
375 to make it compile again on broken platforms (they still exist)
376 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
377
3783.05 Thu Jun 19 23:23:52 CEST 2008
379 - work around perl overriding readdir etc. with thread-unsafe
380 (sic!) versions.
381
3823.04 Wed Jun 18 01:35:38 CEST 2008
383 - (libeio) fix eio_mknod, which confused it's arguments.
384 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
385 is stupid.
386 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
387 - (libeio) fix a bug that could potentially cause IO::AIO
388 not to get initialised properly.
389
3903.03 Thu May 29 05:33:30 CEST 2008
391 - (libeio) correctly call pthread_attr_destroy ().
392 - (libeio) work around broken bsd headers once more.
393 - reduce shared library size again by not including wrappers.
394 - max_outstanding could cause poll to enter a busy-waiting loop.
395 - document the new IO::AIO::poll_cb result value.
396
3973.02 Mon May 12 02:32:02 CEST 2008
398 - fix a memory leak on aio_readlink.
399 - bring back working fchmod.
400 - nop and busy now set result to 0.
401 - set errno to ENOMEM when allocation fails.
402
4033.01 Sun May 11 03:07:03 CEST 2008
404 - (libeio) make it compile on systems without readahead or readdir_r.
405 - (libeio) improve configure check for readahead availability.
406 - do not try to link against -lrt.
407 - use a separate configure script for IO::AIO (not the libeio one).
408
4093.0 Sun May 11 00:57:14 CEST 2008
410 - added bin/treescan to the distribution.
411 - switched to using libeio.
412 - LOTS OF INCOMPATIBLE CHANGES:
413 - remove signal functionality, it is not worth the effort.
414 - max_outstanding no longer returns the previous number of requests.
415 - poll_cb no longer returns number of requests.
416
4172.62 Sat Apr 26 13:59:33 CEST 2008
418 - port to solaris perls configured for old posix
419 (analysed by Jost Krieger).
420 - keep a reference to the perl filehandle object in aio_close,
421 so it doesn't get closed prematurely, leading to ugly races.
422
4232.61 Wed Apr 16 18:45:02 CEST 2008
424 - fix treescan output duplication and improve output ordering.
425 also display files given on the commandline.
426 - use a different algorithm for aio_close that is faster
427 and probably has even lower chances of blocking.
428 - do our own stack memory management for threads - linux
429 allocates outrageous amounts of VM (not so bad unless you
430 use mlockall...), which severely limits the number of threads
431 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
432 and 4096 * sizeof (long) (usually this is 16..64k).
433
4342.6 Sun Mar 30 08:28:11 CEST 2008
10 - added aio_sync. 435 - added aio_sync.
11 - added aio_pathsync. 436 - added aio_pathsync.
437 - fix prototypes of (void) functions.
12 438
132.51 Sat Oct 6 16:04:54 CEST 2007 4392.51 Sat Oct 6 16:04:54 CEST 2007
14 - perlio isn't generally threadsafe, so aio_close could not work reliably. 440 - perlio isn't generally threadsafe, so aio_close could not work reliably.
15 aio_close now tries a safe hack that might not be that asynchronous 441 aio_close now tries a safe hack that might not be that asynchronous
16 (see the manpage for details). 442 (see the manpage for details).

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