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Comparing IO-AIO/Changes (file contents):
Revision 1.92 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.309 by root, Fri Dec 28 07:33:41 2012 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: aio_cptree/mvtree
4TODO: reduce condvar fairness: schedule hot-cache-threads first?
5TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
6TODO: aio_fcntl, at least for file-locking
7TODO: aio_mincore?
8TODO: getxattr etc.?
9TODO: F_DUPFD_CLOEXEC
10TODO: emulation for splice?
11TODO: eio_mmap|mlock|munmap|splice...
12
13 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
14 and call rename/rmdir instead of renameat/unlinkat.
15
164.18 Thu Oct 11 07:01:26 CEST 2012
17 - fix unintended xthread_create by intentionalising it :)
18
194.17 Thu Oct 11 05:19:47 CEST 2012
20 - rename aio_fallocate to aio_allocate, to match documentation.
21 - add list of linux fsid values to aio_statvfs docs.
22 - work around a bug in btrfs' FIEMAP ioctl implementation.
23 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
24 as per unix spec.
25
264.16 Tue Aug 14 05:39:03 CEST 2012
27 - aio_statvfs was wromgly marked for wd emulation, causing
28 it to malfunction for paths.
29 - fix a crash in aio_fiemap, when used on ranges without any
30 extents.
31 - work around linux kernel bug (at least in 3.2): kernel might
32 trash fiemap input arguments.
33 - work around linux kernel bug (at least in 3.2): kernel does not
34 set FIEMAP_EXTENT_LAST on last segment.
35 - work around linux kernel bug (at least in 3.2): kernel silently
36 truncates segment count if a file.
37 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
38 to quick overview.
39 - splice can corrupt data.
40 - (libeio) remove pread/pwrite emulation.
41 - do not grow mmaped scalars in aio_read.
42 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
43 - provide pread/pwrite for win32, making it link again on native win32.
44
454.15 Tue Apr 10 06:59:00 CEST 2012
46 - always include linux/types.h for fiemap, for compatibility to
47 ancient systems (Paul Howarth).
48 - experimental support for IO::AIO::splice and ::tee (no aio_...).
49 - provide SEEK_HOLE and SEEK_DATA, if available.
50 - work around (again!) an immensely stupid bug in RHEL, defining
51 autoconf macros in linux system headers (analysed by Paul Howarth).
52
534.14 Sat Apr 7 02:45:18 CEST 2012
54 - fix stat structure usage on windows, which caused bogus stat results.
55 - (libeio) make readahead emulation behave more like actual readahead by never failing.
56 - new request aio_seek.
57 - new request aio_fiemap.
58 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
59
604.12 Fri Dec 30 08:51:25 CET 2011
61 - realpath would return a random value if the name was too long,
62 instead of -1.
63 - port to c89.
64
654.11 Mon Oct 10 00:24:11 CEST 2011
66 - libeio didn't compile on !linux (Paul Howarth).
67
684.1 Sun Oct 9 10:24:11 CEST 2011
69 - IO::AIO did access uninitialised memory on unsuccessful stats.
70 - (libeio) added syncfs syscall wrapper.
71 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
72 - (libeio) support multiple indepenent working directories.
73 - applied speling corrections by Nicholas Bamber.
74 - tune treescan #threads and #outstanding requests a bit.
75 - reduce the number of file descriptors in use at any one time
76 in treescan, to avoid running out of them (and using too much ram).
77 - take advantage of working directoriy abstractions
78 in aio_scandir and treescan.
79 - reduce compiled size by ~10% by not inlining some key functionality.
80 - added --progress switch to treescan.
81
824.0 Mon Jul 18 05:01:10 CEST 2011
83 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
84 see FORK BEHAVIOUR in manpage for details.
85 - passes testsuite on win32 now and may actually work
86 (activestate 5.10.1 / MSVC6, YMMV).
87 - (libeio) fix a deadlock where a wakeup signal could be missed when
88 a timeout occured at the same time.
89 - (libeio) added realpath.
90 - (libeio) added fallocate.
91 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
92 - (libeio) do not acquire any locks when forking.
93 - (libeio) use fewer time() syscalls when waiting for new requests.
94
953.93 Wed Jun 29 23:44:18 CEST 2011
96 - ECB.H WAS MISSING.
97
983.92 Wed Jun 29 14:45:41 CEST 2011
99 - ecb.h was missing.
100
1013.91 Wed Jun 29 13:24:42 CEST 2011
102 - (libeio) work around a Linux (and likely FreeBSD and other
103 kernels) bug where sendfile would not transfer all the requested
104 bytes on large transfers, using a heuristic.
105 - buggy sendfile caused aio_move/copy to sometimes fail for big
106 files (fortunately it checks that the whole file has been
107 transferred...)
108 - use libecb for higher performance and higher portability.
109 - (libeio) disable sendfile on darwin, it's too broken.
110 - disable fork tests on !linux, as only linux supports mixing
111 pthread and fork in perl.
112 - document the fact that fork doesn't work anymore when using
113 this module, on anything !GNU/Linux.
114 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
115 run on a 0.1MHz cpu. Or so.
116
1173.9 Fri May 27 02:43:47 CEST 2011
118 - (libeio) fix memory corruption in aio_readdirx for the flags
119 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
120 - add lots of newer POSIX and GNU/Linux-specific open
121 flags.
122
1233.8 Sun Mar 27 12:25:33 CEST 2011
124 - use nonstandard but maybe-working-on-bsd fork technique.
125 - support a max_idle value of 0.
126 - support setting of idle timeout value (IO::AIO::idle_timeout).
127
1283.72 Fri Feb 11 04:25:38 CET 2011
129 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
130 - aio_mknod always used a dev_t value of 0.
131 - new treescan option: --grep.
132 - add more S_IF macros, and major/minor/makedev "macros".
133
1343.71 Thu Dec 30 08:18:46 CET 2010
135 - the numerical result value passed to callbacks did not stringify
136 correctly, due to internal reuse and failure to reset the sv flags.
137 - actually test for posix_[mf]advise, as at least uClibc defines
138 _POSIX_ADVISORY_INFO without actually having any of the required
139 funcitonality. ugh.
140
1413.7 Mon Nov 1 23:00:34 CET 2010
142 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
143 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
144 - document the sad state of affairs w.r.t. pthread on many bsds.
145 - do not enable mmap on systems without _POSIX_MAPPED_FILES
146 (openbsd 4.8).
147 - do not leak memory in IO::AIO::mmap when the scalar already
148 had string-data.
149 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
150 them.
151 - cache the result IV, for a minor speedup in the common case.
152 - croak when an mmapped-scalar changes location, to detect
153 user-errors better.
154 - fix aio_readlink prototype.
155
1563.65 Wed Mar 31 02:45:05 CEST 2010
157 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
158 cut off long pathnames in aio_readlink (based on patch by
159 Rasmus Andersson).
160 - a double fork partially killed the event pipe (great testcase
161 by dormando). affects IO::AIO, BDB and Async::Interrupt.
162 - suck steve's dick and rename our symbols to avoid colliding
163 with nonstandard identifier spam on the broken os x pseudo-os.
164 affects IO::AIO and BDB.
165
1663.6 Mon Jan 11 00:43:39 CET 2010
167 - (libeio) more fixes for the freebsd/apple sendfile - broken by
168 manpage standards, but apparently correct accoridng to actual
169 kernel sources.
170 - add IO::AIO::mmap/munmap support.
171 - add IO::AIO::m(un)lockall support.
172 - clean up manpage.
173
1743.5 Thu Jan 7 21:25:04 CET 2010
175 - (liebio) fix freebsd sendfile (Vanilla Hsu).
176 - (libeio) also fix darwin sendfile that suffered from a similar bug.
177 - add aio_statvfs as interface to statvfs/fstatvfs.
178 - work around buggy symlink() on cygwin in the testsuite.
179 - wtf. freebsd-8.0 actually passes the testsuite! I knew
180 they could implement fork and semaphores one day! cheers!
181
1823.4 Sat Jan 2 15:13:04 CET 2010
183 - (libeio) max_poll_time was not properly converted to ticks.
184 - clarify cancel_subs description.
185 - IO::AIO::sendfile did not actually return the return value
186 from the sendfile call.
187 - implement aio_msync, aio_mtouch.
188 - (libeio) tentatively support darwin in sendfile.
189
1903.31 Thu Nov 12 02:14:29 CET 2009
191 - fix result status documentation of aio_copy, aio_move.
192 - speed up object creation considerably by avoiding
193 hash lookups.
194
1953.3 Wed Aug 5 13:52:58 CEST 2009
196 - use common::sense.
197 - use common schmorp.h header.
198 - allow integers (file descriptors) in addition to file handles.
199 - take advantage of linux' eventfd (but it seems slower on smp?).
200 - use poll not select on posix platforms.
201
2023.261 Wed Jul 1 10:11:51 CEST 2009
203 - more 0S X workarounds (patch by Tokuhiro Matsuno).
204
2053.26 Tue Jun 30 09:33:26 CEST 2009
206 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
207 try to work around this horribly broken OS in a somewhat hackish
208 way. might help other os's too.
209
2103.25 Sat Jun 27 05:18:26 CEST 2009
211 - added IO::AIO::fadvise and IO::AIO::sendfile.
212 - (libeio) replaced quicksort+insertion sort by a tuned radix
213 sort + insertion sort, resulting in comparable runtime (usually
214 faster) to the old version, but without any ill side effects on
215 degenerated (for quicksort) data.
216 - (libeio) correctly sort dirs by inodes if we have perfect type
217 knowledge and DIRS_FIRST is used.
218 - (libeio) internally the wrong DT_* constants were used, but no
219 known system has differing EIO_DT_*/DT_* values, so not an issue.
220 - removed a (harmless) assert that was left over on the code
221 but should not have been.
222 - use more correct types (change IO length from IV to VAL64,
223 which makes a difference on systems without 64 bit perls).
224
2253.23 Sat Jun 13 16:57:58 CEST 2009
226 - fix off-by-one bug in aio_readdir that was introduced in the
227 rushed 3.22 release.
228
2293.22 Sat Jun 13 15:32:40 CEST 2009
230 - speed up readdirx sort algorithm slightly.
231 - bin/treescan was missing from distro tarball.
232
2333.21 Fri Jun 12 18:45:53 CEST 2009
234 - new options --dirs and --files for treescan.
235 - install bin/treescan by default.
236 - (libeio) aio_readdir can now be cancelled while executing.
237 - fix a printf format string for 64 bit systems (could lead
238 to problems on big endian 64 bit systems).
239 - do not use qsort() but our own algorithm: glibc initialises
240 the whole locale and I/O subsystem inside qsort, causing
241 a stack overflow on 32 bit machines. The new sort uses much less
242 stack and is more than twice as fast in typical situations.
243
2443.2 Sun Jun 7 20:30:05 CEST 2009
245 - (libeio) pwrite emulation was even more flawed than intended and did
246 not restore the file offset.
247 - add aio_readdirx, which can return inode and filetype and sort
248 the names in various ways.
249 - unfortunately, utime, chmod, chown on an open file that has just
250 been written can easily block, which caused aio_copy to block the
251 process. no more!
252 - no longer rely on dst path in aio_copy when futime is available.
253
2543.19 Tue Apr 21 22:05:21 CEST 2009
255 - more perl 5.10 workarounds for aio_read and write.
256 - aio_write no longer modifies the sv (if possible).
257 - aio_read now works correctly with magic values.
258
2593.18 Sun Apr 19 21:17:32 CEST 2009
260 - better diagnostics when some aio_* functions get passed an illegal fh.
261 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
262
2633.17 Thu Nov 20 08:45:36 CET 2008
264 - (libeio) added aio_sync_file_range (untested).
265 - add aio_busy to @IO::AIO::AIO_REQ.
266
2673.16 Wed Oct 22 18:28:01 CEST 2008
268 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
269 part to improve portability to perl 5.8 (reported by szymon).
270
2713.15 Mon Oct 13 00:39:55 CEST 2008
272 - automatic removal of feeders was broken.
273 - (libeio) use a more robust method to detect whether a feeder
274 has added something to the group or not.
275
2763.1 Thu Oct 2 13:34:40 CEST 2008
277 - pre-deref the passed callback object, for increased speed
278 and decreased memory usage.
279 - call on_next_submit callback even for aio_group - impact unknown,
280 but seems more correct.
281 - $req->cb now returns the original callback.
282 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
283 requiring a thread switch.
284 - (libeio) status code of aio_futime and aio_utime was always passed 0.
285 - do some other ยต-optimisations.
286
2873.07 Sat Aug 2 16:06:13 CEST 2008
288 - do not include LIBS in autoconf tests.
289
2903.06 Tue Jul 15 12:41:32 CEST 2008
291 - move preadwritelock definition before it's first reference,
292 to make it compile again on broken platforms (they still exist)
293 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
294
2953.05 Thu Jun 19 23:23:52 CEST 2008
296 - work around perl overriding readdir etc. with thread-unsafe
297 (sic!) versions.
298
2993.04 Wed Jun 18 01:35:38 CEST 2008
300 - (libeio) fix eio_mknod, which confused it's arguments.
301 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
302 is stupid.
303 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
304 - (libeio) fix a bug that could potentially cause IO::AIO
305 not to get initialised properly.
306
3073.03 Thu May 29 05:33:30 CEST 2008
308 - (libeio) correctly call pthread_attr_destroy ().
309 - (libeio) work around broken bsd headers once more.
310 - reduce shared library size again by not including wrappers.
311 - max_outstanding could cause poll to enter a busy-waiting loop.
312 - document the new IO::AIO::poll_cb result value.
313
3143.02 Mon May 12 02:32:02 CEST 2008
315 - fix a memory leak on aio_readlink.
316 - bring back working fchmod.
317 - nop and busy now set result to 0.
318 - set errno to ENOMEM when allocation fails.
319
3203.01 Sun May 11 03:07:03 CEST 2008
321 - (libeio) make it compile on systems without readahead or readdir_r.
322 - (libeio) improve configure check for readahead availability.
323 - do not try to link against -lrt.
324 - use a separate configure script for IO::AIO (not the libeio one).
325
3263.0 Sun May 11 00:57:14 CEST 2008
327 - added bin/treescan to the distribution.
328 - switched to using libeio.
329 - LOTS OF INCOMPATIBLE CHANGES:
330 - remove signal functionality, it is not worth the effort.
331 - max_outstanding no longer returns the previous number of requests.
332 - poll_cb no longer returns number of requests.
333
3342.62 Sat Apr 26 13:59:33 CEST 2008
335 - port to solaris perls configured for old posix
336 (analysed by Jost Krieger).
337 - keep a reference to the perl filehandle object in aio_close,
338 so it doesn't get closed prematurely, leading to ugly races.
339
3402.61 Wed Apr 16 18:45:02 CEST 2008
341 - fix treescan output duplication and improve output ordering.
342 also display files given on the commandline.
343 - use a different algorithm for aio_close that is faster
344 and probably has even lower chances of blocking.
345 - do our own stack memory management for threads - linux
346 allocates outrageous amounts of VM (not so bad unless you
347 use mlockall...), which severely limits the number of threads
348 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
349 and 4096 * sizeof (long) (usually this is 16..64k).
350
3512.6 Sun Mar 30 08:28:11 CEST 2008
352 - added aio_sync.
353 - added aio_pathsync.
354 - fix prototypes of (void) functions.
355
3562.51 Sat Oct 6 16:04:54 CEST 2007
357 - perlio isn't generally threadsafe, so aio_close could not work reliably.
358 aio_close now tries a safe hack that might not be that asynchronous
359 (see the manpage for details).
360 - discard callback return values as to not grow the stack endlessly
361 when poll_cb handles many requests without returning.
362 - minor code cleanups.
363
3642.5 Thu Oct 4 14:49:08 CEST 2007
365 - replaced _fd2fh with faster xs code.
366 - aio_close will now try to do "the right thing" and thus might
367 work sensibly for the very first time.
368
3692.41 Mon Sep 24 21:28:21 CEST 2007
370 - after fork, invest some work to make sure that the poll_fileno
371 stays stable (by dup2'ing the new fd over the old one), to make
372 it easier for programs/libs that don't control their forking
373 behaviour and cannot recreate their watchers.
374
3752.4 Sun Aug 5 18:44:22 CEST 2007
376 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
377 successfully demonstrated that you can block on futimes...).
378 - allow undef as fileoffset for aio_read/write and use read/write(2)
379 internally (useful for sockets or O_APPEND handles).
380 - allow undef for length in aio_write.
381 - negative dataoffsets work as expected now in aio_read/aio_write.
382 - use NV instead of UV for 32 bit perls and file offsets, as NVs
383 have a larger range then.
384 - shared code between BDB and IO::AIO.
385 - aio_busy was completely broken. now fixed.
386 - readahead emulation now returns something.
387 - correctly set errno to ENOSYS on unimplemented functions
388 (should never happen, though).
389 - large changes to make it partially compile and run on win32,
390 but win32 lacks too much functionality, and perl overrides way
391 too many functions with crashing versions.
392
3932.33 Tue Jan 23 23:55:41 CET 2007
394 - fix install path (Andreas J. Koenig).
395
3962.32 Mon Jan 22 16:56:23 CET 2007
397 - added aio_rmtree.
398 - wow, aio_mkdir was missing.
399 - aio_load did return undef on error, not -1.
400 - use prefixexp not prefix in autoconf.pm
401 (suggested by ... rt.cpan.org unreachable).
402 - avoid installing autoconf.pm.
403
4042.31 Sat Jan 6 03:46:02 CET 2007
405 - added aio_load.
406
4072.3 Sat Dec 23 05:48:07 CET 2006
408 - fix off-by-one bug in aio_read, causing memory corruption
409 or crashes.
410
4112.21 Fri Dec 22 05:03:38 CET 2006
412 - minor doc updates.
413 - minor cleanups.
414 - IO::AIO::poll returns request count.
415 - undocumented and unfinished async-signal-reporting.
416
4172.2 Tue Oct 31 00:31:00 CET 2006
418 - minor doc updates.
419 - added aio_readlink.
420 - properly zero-terminate aio_read buffer.
421 - fix aio_read/write with nonzero dataoffset.
422 - reduced size of aio request structure.
423 - better diagnostics when pathnames etc. are not byte-encoded;
424 do not leak request in that case, either.
425
4262.1 Sun Oct 29 02:01:57 CET 2006
427 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
428 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
429 - fix a bug in aio_move where it would fail everytime
430 it would have to copy files manually.
431 - doc updates.
432 - start threads only on (very low) demand.
433 - end superfluous threads automatically after 10s idling.
434 - add IO::AIO::max_idle to control this.
435 - some tuning applied to random places.
436 - add aio_mknod.
4 437
52.0 Thu Oct 26 18:27:58 CEST 2006 4382.0 Thu Oct 26 18:27:58 CEST 2006
6 - minor incompatibility: max_outstanding semantics have changed. 439 - minor incompatibility: max_outstanding semantics have changed.
7 - major rewrite, consider all functionality EXPERIMENTAL. 440 - major rewrite, consider all functionality EXPERIMENTAL.
8 - aio requests can be cancelled. 441 - aio requests can be cancelled.
9 - callbacks can be (re-)set later. 442 - callbacks can be (re-)set later.
10 - aio requests can have choose 9 priorities. 443 - aio requests can choose between 9 priorities.
11 - add aio_group: aio requests can be grouped 444 - add aio_group: aio requests can be grouped
12 into composite requests. 445 into composite requests.
13 - generator interface for groups. 446 - generator interface for groups.
14 - add IO::AIO::poll_some. 447 - add IO::AIO::poll_some.
15 - major documentation improvements. 448 - major documentation improvements.
67 - somebody nagged about C89 compatibility, so this release should 500 - somebody nagged about C89 compatibility, so this release should
68 be C89 compatible, but no guarantees for future ones. 501 be C89 compatible, but no guarantees for future ones.
69 - abort when the configure script fails. 502 - abort when the configure script fails.
70 503
711.4 Wed Aug 17 08:07:27 CEST 2005 5041.4 Wed Aug 17 08:07:27 CEST 2005
72 - forget to recreate the pipe after forking, this could cause 505 - forgot to recreate the pipe after forking, this could cause
73 deadlocks. 506 deadlocks.
74 507
751.3 Wed Aug 17 07:25:54 CEST 2005 5081.3 Wed Aug 17 07:25:54 CEST 2005
76 - properly propagate exceptions from callbacks, instead of silently 509 - properly propagate exceptions from callbacks, instead of silently
77 eating them. 510 eating them.

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