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Comparing IO-AIO/Changes (file contents):
Revision 1.99 by root, Sun Oct 29 01:03:13 2006 UTC vs.
Revision 1.316 by root, Fri Apr 11 05:19:40 2014 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_cp/mvtree/rmtree 4TODO: aio_cptree/mvtree
5TODO: aio_utime, aio_chmod, aio_chown? 5TODO: reduce condvar fairness: schedule hot-cache-threads first?
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
15http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888
16http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx
17http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx
18http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx
19http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx
20http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx
21http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
22http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
23TODO: extra socket/tcp constants &c?
24
254.3 Fri Apr 11 06:22:38 CEST 2014
26 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
27 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
28 in 5.18. What's so attractive about giving a shit about backwards
29 compatibility - I will never understand.
30
314.2 Sat Jan 25 01:13:14 CET 2014
32 - aio_group could corrupt memory because it didn't restore
33 the stack after req_submit.
34 - be more careful on (e.g. permission) errors in bin/treescan.
35 - work around changes in ExtUtils::MakeMaker.
36 - (libeio) implement aio_realpath for win32.
37 - (xthread) work around compile time bugs in ptw32.
38 - added IO::AIO::pipesize.
39 - (libecb) insignificant update.
40
414.19 Sun Jan 6 12:47:26 CET 2013
42 - avoid endless loop in fiemap with some XFS files.
43 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
44 and call rename/rmdir instead of renameat/unlinkat.
45
464.18 Thu Oct 11 07:01:26 CEST 2012
47 - fix unintended xthread_create by intentionalising it :)
48
494.17 Thu Oct 11 05:19:47 CEST 2012
50 - rename aio_fallocate to aio_allocate, to match documentation.
51 - add list of linux fsid values to aio_statvfs docs.
52 - work around a bug in btrfs' FIEMAP ioctl implementation.
53 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
54 as per unix spec.
55
564.16 Tue Aug 14 05:39:03 CEST 2012
57 - aio_statvfs was wromgly marked for wd emulation, causing
58 it to malfunction for paths.
59 - fix a crash in aio_fiemap, when used on ranges without any
60 extents.
61 - work around linux kernel bug (at least in 3.2): kernel might
62 trash fiemap input arguments.
63 - work around linux kernel bug (at least in 3.2): kernel does not
64 set FIEMAP_EXTENT_LAST on last segment.
65 - work around linux kernel bug (at least in 3.2): kernel silently
66 truncates segment count if a file.
67 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
68 to quick overview.
69 - splice can corrupt data.
70 - (libeio) remove pread/pwrite emulation.
71 - do not grow mmaped scalars in aio_read.
72 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
73 - provide pread/pwrite for win32, making it link again on native win32.
74
754.15 Tue Apr 10 06:59:00 CEST 2012
76 - always include linux/types.h for fiemap, for compatibility to
77 ancient systems (Paul Howarth).
78 - experimental support for IO::AIO::splice and ::tee (no aio_...).
79 - provide SEEK_HOLE and SEEK_DATA, if available.
80 - work around (again!) an immensely stupid bug in RHEL, defining
81 autoconf macros in linux system headers (analysed by Paul Howarth).
82
834.14 Sat Apr 7 02:45:18 CEST 2012
84 - fix stat structure usage on windows, which caused bogus stat results.
85 - (libeio) make readahead emulation behave more like actual readahead by never failing.
86 - new request aio_seek.
87 - new request aio_fiemap.
88 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
89
904.12 Fri Dec 30 08:51:25 CET 2011
91 - realpath would return a random value if the name was too long,
92 instead of -1.
93 - port to c89.
94
954.11 Mon Oct 10 00:24:11 CEST 2011
96 - libeio didn't compile on !linux (Paul Howarth).
97
984.1 Sun Oct 9 10:24:11 CEST 2011
99 - IO::AIO did access uninitialised memory on unsuccessful stats.
100 - (libeio) added syncfs syscall wrapper.
101 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
102 - (libeio) support multiple indepenent working directories.
103 - applied speling corrections by Nicholas Bamber.
104 - tune treescan #threads and #outstanding requests a bit.
105 - reduce the number of file descriptors in use at any one time
106 in treescan, to avoid running out of them (and using too much ram).
107 - take advantage of working directoriy abstractions
108 in aio_scandir and treescan.
109 - reduce compiled size by ~10% by not inlining some key functionality.
110 - added --progress switch to treescan.
111
1124.0 Mon Jul 18 05:01:10 CEST 2011
113 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
114 see FORK BEHAVIOUR in manpage for details.
115 - passes testsuite on win32 now and may actually work
116 (activestate 5.10.1 / MSVC6, YMMV).
117 - (libeio) fix a deadlock where a wakeup signal could be missed when
118 a timeout occured at the same time.
119 - (libeio) added realpath.
120 - (libeio) added fallocate.
121 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
122 - (libeio) do not acquire any locks when forking.
123 - (libeio) use fewer time() syscalls when waiting for new requests.
124
1253.93 Wed Jun 29 23:44:18 CEST 2011
126 - ECB.H WAS MISSING.
127
1283.92 Wed Jun 29 14:45:41 CEST 2011
129 - ecb.h was missing.
130
1313.91 Wed Jun 29 13:24:42 CEST 2011
132 - (libeio) work around a Linux (and likely FreeBSD and other
133 kernels) bug where sendfile would not transfer all the requested
134 bytes on large transfers, using a heuristic.
135 - buggy sendfile caused aio_move/copy to sometimes fail for big
136 files (fortunately it checks that the whole file has been
137 transferred...)
138 - use libecb for higher performance and higher portability.
139 - (libeio) disable sendfile on darwin, it's too broken.
140 - disable fork tests on !linux, as only linux supports mixing
141 pthread and fork in perl.
142 - document the fact that fork doesn't work anymore when using
143 this module, on anything !GNU/Linux.
144 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
145 run on a 0.1MHz cpu. Or so.
146
1473.9 Fri May 27 02:43:47 CEST 2011
148 - (libeio) fix memory corruption in aio_readdirx for the flags
149 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
150 - add lots of newer POSIX and GNU/Linux-specific open
151 flags.
152
1533.8 Sun Mar 27 12:25:33 CEST 2011
154 - use nonstandard but maybe-working-on-bsd fork technique.
155 - support a max_idle value of 0.
156 - support setting of idle timeout value (IO::AIO::idle_timeout).
157
1583.72 Fri Feb 11 04:25:38 CET 2011
159 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
160 - aio_mknod always used a dev_t value of 0.
161 - new treescan option: --grep.
162 - add more S_IF macros, and major/minor/makedev "macros".
163
1643.71 Thu Dec 30 08:18:46 CET 2010
165 - the numerical result value passed to callbacks did not stringify
166 correctly, due to internal reuse and failure to reset the sv flags.
167 - actually test for posix_[mf]advise, as at least uClibc defines
168 _POSIX_ADVISORY_INFO without actually having any of the required
169 funcitonality. ugh.
170
1713.7 Mon Nov 1 23:00:34 CET 2010
172 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
173 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
174 - document the sad state of affairs w.r.t. pthread on many bsds.
175 - do not enable mmap on systems without _POSIX_MAPPED_FILES
176 (openbsd 4.8).
177 - do not leak memory in IO::AIO::mmap when the scalar already
178 had string-data.
179 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
180 them.
181 - cache the result IV, for a minor speedup in the common case.
182 - croak when an mmapped-scalar changes location, to detect
183 user-errors better.
184 - fix aio_readlink prototype.
185
1863.65 Wed Mar 31 02:45:05 CEST 2010
187 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
188 cut off long pathnames in aio_readlink (based on patch by
189 Rasmus Andersson).
190 - a double fork partially killed the event pipe (great testcase
191 by dormando). affects IO::AIO, BDB and Async::Interrupt.
192 - suck steve's dick and rename our symbols to avoid colliding
193 with nonstandard identifier spam on the broken os x pseudo-os.
194 affects IO::AIO and BDB.
195
1963.6 Mon Jan 11 00:43:39 CET 2010
197 - (libeio) more fixes for the freebsd/apple sendfile - broken by
198 manpage standards, but apparently correct accoridng to actual
199 kernel sources.
200 - add IO::AIO::mmap/munmap support.
201 - add IO::AIO::m(un)lockall support.
202 - clean up manpage.
203
2043.5 Thu Jan 7 21:25:04 CET 2010
205 - (liebio) fix freebsd sendfile (Vanilla Hsu).
206 - (libeio) also fix darwin sendfile that suffered from a similar bug.
207 - add aio_statvfs as interface to statvfs/fstatvfs.
208 - work around buggy symlink() on cygwin in the testsuite.
209 - wtf. freebsd-8.0 actually passes the testsuite! I knew
210 they could implement fork and semaphores one day! cheers!
211
2123.4 Sat Jan 2 15:13:04 CET 2010
213 - (libeio) max_poll_time was not properly converted to ticks.
214 - clarify cancel_subs description.
215 - IO::AIO::sendfile did not actually return the return value
216 from the sendfile call.
217 - implement aio_msync, aio_mtouch.
218 - (libeio) tentatively support darwin in sendfile.
219
2203.31 Thu Nov 12 02:14:29 CET 2009
221 - fix result status documentation of aio_copy, aio_move.
222 - speed up object creation considerably by avoiding
223 hash lookups.
224
2253.3 Wed Aug 5 13:52:58 CEST 2009
226 - use common::sense.
227 - use common schmorp.h header.
228 - allow integers (file descriptors) in addition to file handles.
229 - take advantage of linux' eventfd (but it seems slower on smp?).
230 - use poll not select on posix platforms.
231
2323.261 Wed Jul 1 10:11:51 CEST 2009
233 - more 0S X workarounds (patch by Tokuhiro Matsuno).
234
2353.26 Tue Jun 30 09:33:26 CEST 2009
236 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
237 try to work around this horribly broken OS in a somewhat hackish
238 way. might help other os's too.
239
2403.25 Sat Jun 27 05:18:26 CEST 2009
241 - added IO::AIO::fadvise and IO::AIO::sendfile.
242 - (libeio) replaced quicksort+insertion sort by a tuned radix
243 sort + insertion sort, resulting in comparable runtime (usually
244 faster) to the old version, but without any ill side effects on
245 degenerated (for quicksort) data.
246 - (libeio) correctly sort dirs by inodes if we have perfect type
247 knowledge and DIRS_FIRST is used.
248 - (libeio) internally the wrong DT_* constants were used, but no
249 known system has differing EIO_DT_*/DT_* values, so not an issue.
250 - removed a (harmless) assert that was left over on the code
251 but should not have been.
252 - use more correct types (change IO length from IV to VAL64,
253 which makes a difference on systems without 64 bit perls).
254
2553.23 Sat Jun 13 16:57:58 CEST 2009
256 - fix off-by-one bug in aio_readdir that was introduced in the
257 rushed 3.22 release.
258
2593.22 Sat Jun 13 15:32:40 CEST 2009
260 - speed up readdirx sort algorithm slightly.
261 - bin/treescan was missing from distro tarball.
262
2633.21 Fri Jun 12 18:45:53 CEST 2009
264 - new options --dirs and --files for treescan.
265 - install bin/treescan by default.
266 - (libeio) aio_readdir can now be cancelled while executing.
267 - fix a printf format string for 64 bit systems (could lead
268 to problems on big endian 64 bit systems).
269 - do not use qsort() but our own algorithm: glibc initialises
270 the whole locale and I/O subsystem inside qsort, causing
271 a stack overflow on 32 bit machines. The new sort uses much less
272 stack and is more than twice as fast in typical situations.
273
2743.2 Sun Jun 7 20:30:05 CEST 2009
275 - (libeio) pwrite emulation was even more flawed than intended and did
276 not restore the file offset.
277 - add aio_readdirx, which can return inode and filetype and sort
278 the names in various ways.
279 - unfortunately, utime, chmod, chown on an open file that has just
280 been written can easily block, which caused aio_copy to block the
281 process. no more!
282 - no longer rely on dst path in aio_copy when futime is available.
283
2843.19 Tue Apr 21 22:05:21 CEST 2009
285 - more perl 5.10 workarounds for aio_read and write.
286 - aio_write no longer modifies the sv (if possible).
287 - aio_read now works correctly with magic values.
288
2893.18 Sun Apr 19 21:17:32 CEST 2009
290 - better diagnostics when some aio_* functions get passed an illegal fh.
291 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
292
2933.17 Thu Nov 20 08:45:36 CET 2008
294 - (libeio) added aio_sync_file_range (untested).
295 - add aio_busy to @IO::AIO::AIO_REQ.
296
2973.16 Wed Oct 22 18:28:01 CEST 2008
298 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
299 part to improve portability to perl 5.8 (reported by szymon).
300
3013.15 Mon Oct 13 00:39:55 CEST 2008
302 - automatic removal of feeders was broken.
303 - (libeio) use a more robust method to detect whether a feeder
304 has added something to the group or not.
305
3063.1 Thu Oct 2 13:34:40 CEST 2008
307 - pre-deref the passed callback object, for increased speed
308 and decreased memory usage.
309 - call on_next_submit callback even for aio_group - impact unknown,
310 but seems more correct.
311 - $req->cb now returns the original callback.
312 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
313 requiring a thread switch.
314 - (libeio) status code of aio_futime and aio_utime was always passed 0.
315 - do some other ยต-optimisations.
316
3173.07 Sat Aug 2 16:06:13 CEST 2008
318 - do not include LIBS in autoconf tests.
319
3203.06 Tue Jul 15 12:41:32 CEST 2008
321 - move preadwritelock definition before it's first reference,
322 to make it compile again on broken platforms (they still exist)
323 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
324
3253.05 Thu Jun 19 23:23:52 CEST 2008
326 - work around perl overriding readdir etc. with thread-unsafe
327 (sic!) versions.
328
3293.04 Wed Jun 18 01:35:38 CEST 2008
330 - (libeio) fix eio_mknod, which confused it's arguments.
331 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
332 is stupid.
333 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
334 - (libeio) fix a bug that could potentially cause IO::AIO
335 not to get initialised properly.
336
3373.03 Thu May 29 05:33:30 CEST 2008
338 - (libeio) correctly call pthread_attr_destroy ().
339 - (libeio) work around broken bsd headers once more.
340 - reduce shared library size again by not including wrappers.
341 - max_outstanding could cause poll to enter a busy-waiting loop.
342 - document the new IO::AIO::poll_cb result value.
343
3443.02 Mon May 12 02:32:02 CEST 2008
345 - fix a memory leak on aio_readlink.
346 - bring back working fchmod.
347 - nop and busy now set result to 0.
348 - set errno to ENOMEM when allocation fails.
349
3503.01 Sun May 11 03:07:03 CEST 2008
351 - (libeio) make it compile on systems without readahead or readdir_r.
352 - (libeio) improve configure check for readahead availability.
353 - do not try to link against -lrt.
354 - use a separate configure script for IO::AIO (not the libeio one).
355
3563.0 Sun May 11 00:57:14 CEST 2008
357 - added bin/treescan to the distribution.
358 - switched to using libeio.
359 - LOTS OF INCOMPATIBLE CHANGES:
360 - remove signal functionality, it is not worth the effort.
361 - max_outstanding no longer returns the previous number of requests.
362 - poll_cb no longer returns number of requests.
363
3642.62 Sat Apr 26 13:59:33 CEST 2008
365 - port to solaris perls configured for old posix
366 (analysed by Jost Krieger).
367 - keep a reference to the perl filehandle object in aio_close,
368 so it doesn't get closed prematurely, leading to ugly races.
369
3702.61 Wed Apr 16 18:45:02 CEST 2008
371 - fix treescan output duplication and improve output ordering.
372 also display files given on the commandline.
373 - use a different algorithm for aio_close that is faster
374 and probably has even lower chances of blocking.
375 - do our own stack memory management for threads - linux
376 allocates outrageous amounts of VM (not so bad unless you
377 use mlockall...), which severely limits the number of threads
378 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
379 and 4096 * sizeof (long) (usually this is 16..64k).
380
3812.6 Sun Mar 30 08:28:11 CEST 2008
382 - added aio_sync.
383 - added aio_pathsync.
384 - fix prototypes of (void) functions.
385
3862.51 Sat Oct 6 16:04:54 CEST 2007
387 - perlio isn't generally threadsafe, so aio_close could not work reliably.
388 aio_close now tries a safe hack that might not be that asynchronous
389 (see the manpage for details).
390 - discard callback return values as to not grow the stack endlessly
391 when poll_cb handles many requests without returning.
392 - minor code cleanups.
393
3942.5 Thu Oct 4 14:49:08 CEST 2007
395 - replaced _fd2fh with faster xs code.
396 - aio_close will now try to do "the right thing" and thus might
397 work sensibly for the very first time.
398
3992.41 Mon Sep 24 21:28:21 CEST 2007
400 - after fork, invest some work to make sure that the poll_fileno
401 stays stable (by dup2'ing the new fd over the old one), to make
402 it easier for programs/libs that don't control their forking
403 behaviour and cannot recreate their watchers.
404
4052.4 Sun Aug 5 18:44:22 CEST 2007
406 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
407 successfully demonstrated that you can block on futimes...).
408 - allow undef as fileoffset for aio_read/write and use read/write(2)
409 internally (useful for sockets or O_APPEND handles).
410 - allow undef for length in aio_write.
411 - negative dataoffsets work as expected now in aio_read/aio_write.
412 - use NV instead of UV for 32 bit perls and file offsets, as NVs
413 have a larger range then.
414 - shared code between BDB and IO::AIO.
415 - aio_busy was completely broken. now fixed.
416 - readahead emulation now returns something.
417 - correctly set errno to ENOSYS on unimplemented functions
418 (should never happen, though).
419 - large changes to make it partially compile and run on win32,
420 but win32 lacks too much functionality, and perl overrides way
421 too many functions with crashing versions.
422
4232.33 Tue Jan 23 23:55:41 CET 2007
424 - fix install path (Andreas J. Koenig).
425
4262.32 Mon Jan 22 16:56:23 CET 2007
427 - added aio_rmtree.
428 - wow, aio_mkdir was missing.
429 - aio_load did return undef on error, not -1.
430 - use prefixexp not prefix in autoconf.pm
431 (suggested by ... rt.cpan.org unreachable).
432 - avoid installing autoconf.pm.
433
4342.31 Sat Jan 6 03:46:02 CET 2007
435 - added aio_load.
436
4372.3 Sat Dec 23 05:48:07 CET 2006
438 - fix off-by-one bug in aio_read, causing memory corruption
439 or crashes.
440
4412.21 Fri Dec 22 05:03:38 CET 2006
442 - minor doc updates.
443 - minor cleanups.
444 - IO::AIO::poll returns request count.
445 - undocumented and unfinished async-signal-reporting.
446
4472.2 Tue Oct 31 00:31:00 CET 2006
448 - minor doc updates.
449 - added aio_readlink.
450 - properly zero-terminate aio_read buffer.
451 - fix aio_read/write with nonzero dataoffset.
452 - reduced size of aio request structure.
453 - better diagnostics when pathnames etc. are not byte-encoded;
454 do not leak request in that case, either.
6 455
72.1 Sun Oct 29 02:01:57 CET 2006 4562.1 Sun Oct 29 02:01:57 CET 2006
8 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by 457 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
9 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time. 458 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
10 - fix a bug in aio_move where it would fail everytime 459 - fix a bug in aio_move where it would fail everytime

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