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Comparing IO-AIO/Changes (file contents):
Revision 1.53 by root, Tue Aug 30 15:45:10 2005 UTC vs.
Revision 1.301 by root, Fri Jul 27 18:43:25 2012 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2
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 - fix a crash in aio_fiemap, when used on files without any
14 extents.
15 - work around linux kernel bug (at least in 3.2): kernel might
16 trash fiemap input arguments.
17 - work around linux kernel bug (at least in 3.2): kernel does not
18 set FIEMAP_EXTENT_LAST on last segment.
19 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
20 to quick overview.
21 - splice can corrupt data.
22 - (libeio) remove pread/pwrite emulation.
23 - do not grow mmaped scalars in aio_read.
24 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
25
264.15 Tue Apr 10 06:59:00 CEST 2012
27 - always include linux/types.h for fiemap, for compatibility to
28 ancient systems (Paul Howarth).
29 - experimental support for IO::AIO::splice and ::tee (no aio_...).
30 - provide SEEK_HOLE and SEEK_DATA, if available.
31 - work around (again!) an immensely stupid bug in RHEL, defining
32 autoconf macros in linux system headers (analysed by Paul Howarth).
33
344.14 Sat Apr 7 02:45:18 CEST 2012
35 - fix stat structure usage on windows, which caused bogus stat results.
36 - (libeio) make readahead emulation behave more like actual readahead by never failing.
37 - new request aio_seek.
38 - new request aio_fiemap.
39 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
40
414.12 Fri Dec 30 08:51:25 CET 2011
42 - realpath would return a random value if the name was too long,
43 instead of -1.
44 - port to c89.
45
464.11 Mon Oct 10 00:24:11 CEST 2011
47 - libeio didn't compile on !linux (Paul Howarth).
48
494.1 Sun Oct 9 10:24:11 CEST 2011
50 - IO::AIO did access uninitialised memory on unsuccessful stats.
51 - (libeio) added syncfs syscall wrapper.
52 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
53 - (libeio) support multiple indepenent working directories.
54 - applied speling corrections by Nicholas Bamber.
55 - tune treescan #threads and #outstanding requests a bit.
56 - reduce the number of file descriptors in use at any one time
57 in treescan, to avoid running out of them (and using too much ram).
58 - take advantage of working directoriy abstractions
59 in aio_scandir and treescan.
60 - reduce compiled size by ~10% by not inlining some key functionality.
61 - added --progress switch to treescan.
62
634.0 Mon Jul 18 05:01:10 CEST 2011
64 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
65 see FORK BEHAVIOUR in manpage for details.
66 - passes testsuite on win32 now and may actually work
67 (activestate 5.10.1 / MSVC6, YMMV).
68 - (libeio) fix a deadlock where a wakeup signal could be missed when
69 a timeout occured at the same time.
70 - (libeio) added realpath.
71 - (libeio) added fallocate.
72 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
73 - (libeio) do not acquire any locks when forking.
74 - (libeio) use fewer time() syscalls when waiting for new requests.
75
763.93 Wed Jun 29 23:44:18 CEST 2011
77 - ECB.H WAS MISSING.
78
793.92 Wed Jun 29 14:45:41 CEST 2011
80 - ecb.h was missing.
81
823.91 Wed Jun 29 13:24:42 CEST 2011
83 - (libeio) work around a Linux (and likely FreeBSD and other
84 kernels) bug where sendfile would not transfer all the requested
85 bytes on large transfers, using a heuristic.
86 - buggy sendfile caused aio_move/copy to sometimes fail for big
87 files (fortunately it checks that the whole file has been
88 transferred...)
89 - use libecb for higher performance and higher portability.
90 - (libeio) disable sendfile on darwin, it's too broken.
91 - disable fork tests on !linux, as only linux supports mixing
92 pthread and fork in perl.
93 - document the fact that fork doesn't work anymore when using
94 this module, on anything !GNU/Linux.
95 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
96 run on a 0.1MHz cpu. Or so.
97
983.9 Fri May 27 02:43:47 CEST 2011
99 - (libeio) fix memory corruption in aio_readdirx for the flags
100 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
101 - add lots of newer POSIX and GNU/Linux-specific open
102 flags.
103
1043.8 Sun Mar 27 12:25:33 CEST 2011
105 - use nonstandard but maybe-working-on-bsd fork technique.
106 - support a max_idle value of 0.
107 - support setting of idle timeout value (IO::AIO::idle_timeout).
108
1093.72 Fri Feb 11 04:25:38 CET 2011
110 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
111 - aio_mknod always used a dev_t value of 0.
112 - new treescan option: --grep.
113 - add more S_IF macros, and major/minor/makedev "macros".
114
1153.71 Thu Dec 30 08:18:46 CET 2010
116 - the numerical result value passed to callbacks did not stringify
117 correctly, due to internal reuse and failure to reset the sv flags.
118 - actually test for posix_[mf]advise, as at least uClibc defines
119 _POSIX_ADVISORY_INFO without actually having any of the required
120 funcitonality. ugh.
121
1223.7 Mon Nov 1 23:00:34 CET 2010
123 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
124 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
125 - document the sad state of affairs w.r.t. pthread on many bsds.
126 - do not enable mmap on systems without _POSIX_MAPPED_FILES
127 (openbsd 4.8).
128 - do not leak memory in IO::AIO::mmap when the scalar already
129 had string-data.
130 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
131 them.
132 - cache the result IV, for a minor speedup in the common case.
133 - croak when an mmapped-scalar changes location, to detect
134 user-errors better.
135 - fix aio_readlink prototype.
136
1373.65 Wed Mar 31 02:45:05 CEST 2010
138 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
139 cut off long pathnames in aio_readlink (based on patch by
140 Rasmus Andersson).
141 - a double fork partially killed the event pipe (great testcase
142 by dormando). affects IO::AIO, BDB and Async::Interrupt.
143 - suck steve's dick and rename our symbols to avoid colliding
144 with nonstandard identifier spam on the broken os x pseudo-os.
145 affects IO::AIO and BDB.
146
1473.6 Mon Jan 11 00:43:39 CET 2010
148 - (libeio) more fixes for the freebsd/apple sendfile - broken by
149 manpage standards, but apparently correct accoridng to actual
150 kernel sources.
151 - add IO::AIO::mmap/munmap support.
152 - add IO::AIO::m(un)lockall support.
153 - clean up manpage.
154
1553.5 Thu Jan 7 21:25:04 CET 2010
156 - (liebio) fix freebsd sendfile (Vanilla Hsu).
157 - (libeio) also fix darwin sendfile that suffered from a similar bug.
158 - add aio_statvfs as interface to statvfs/fstatvfs.
159 - work around buggy symlink() on cygwin in the testsuite.
160 - wtf. freebsd-8.0 actually passes the testsuite! I knew
161 they could implement fork and semaphores one day! cheers!
162
1633.4 Sat Jan 2 15:13:04 CET 2010
164 - (libeio) max_poll_time was not properly converted to ticks.
165 - clarify cancel_subs description.
166 - IO::AIO::sendfile did not actually return the return value
167 from the sendfile call.
168 - implement aio_msync, aio_mtouch.
169 - (libeio) tentatively support darwin in sendfile.
170
1713.31 Thu Nov 12 02:14:29 CET 2009
172 - fix result status documentation of aio_copy, aio_move.
173 - speed up object creation considerably by avoiding
174 hash lookups.
175
1763.3 Wed Aug 5 13:52:58 CEST 2009
177 - use common::sense.
178 - use common schmorp.h header.
179 - allow integers (file descriptors) in addition to file handles.
180 - take advantage of linux' eventfd (but it seems slower on smp?).
181 - use poll not select on posix platforms.
182
1833.261 Wed Jul 1 10:11:51 CEST 2009
184 - more 0S X workarounds (patch by Tokuhiro Matsuno).
185
1863.26 Tue Jun 30 09:33:26 CEST 2009
187 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
188 try to work around this horribly broken OS in a somewhat hackish
189 way. might help other os's too.
190
1913.25 Sat Jun 27 05:18:26 CEST 2009
192 - added IO::AIO::fadvise and IO::AIO::sendfile.
193 - (libeio) replaced quicksort+insertion sort by a tuned radix
194 sort + insertion sort, resulting in comparable runtime (usually
195 faster) to the old version, but without any ill side effects on
196 degenerated (for quicksort) data.
197 - (libeio) correctly sort dirs by inodes if we have perfect type
198 knowledge and DIRS_FIRST is used.
199 - (libeio) internally the wrong DT_* constants were used, but no
200 known system has differing EIO_DT_*/DT_* values, so not an issue.
201 - removed a (harmless) assert that was left over on the code
202 but should not have been.
203 - use more correct types (change IO length from IV to VAL64,
204 which makes a difference on systems without 64 bit perls).
205
2063.23 Sat Jun 13 16:57:58 CEST 2009
207 - fix off-by-one bug in aio_readdir that was introduced in the
208 rushed 3.22 release.
209
2103.22 Sat Jun 13 15:32:40 CEST 2009
211 - speed up readdirx sort algorithm slightly.
212 - bin/treescan was missing from distro tarball.
213
2143.21 Fri Jun 12 18:45:53 CEST 2009
215 - new options --dirs and --files for treescan.
216 - install bin/treescan by default.
217 - (libeio) aio_readdir can now be cancelled while executing.
218 - fix a printf format string for 64 bit systems (could lead
219 to problems on big endian 64 bit systems).
220 - do not use qsort() but our own algorithm: glibc initialises
221 the whole locale and I/O subsystem inside qsort, causing
222 a stack overflow on 32 bit machines. The new sort uses much less
223 stack and is more than twice as fast in typical situations.
224
2253.2 Sun Jun 7 20:30:05 CEST 2009
226 - (libeio) pwrite emulation was even more flawed than intended and did
227 not restore the file offset.
228 - add aio_readdirx, which can return inode and filetype and sort
229 the names in various ways.
230 - unfortunately, utime, chmod, chown on an open file that has just
231 been written can easily block, which caused aio_copy to block the
232 process. no more!
233 - no longer rely on dst path in aio_copy when futime is available.
234
2353.19 Tue Apr 21 22:05:21 CEST 2009
236 - more perl 5.10 workarounds for aio_read and write.
237 - aio_write no longer modifies the sv (if possible).
238 - aio_read now works correctly with magic values.
239
2403.18 Sun Apr 19 21:17:32 CEST 2009
241 - better diagnostics when some aio_* functions get passed an illegal fh.
242 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
243
2443.17 Thu Nov 20 08:45:36 CET 2008
245 - (libeio) added aio_sync_file_range (untested).
246 - add aio_busy to @IO::AIO::AIO_REQ.
247
2483.16 Wed Oct 22 18:28:01 CEST 2008
249 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
250 part to improve portability to perl 5.8 (reported by szymon).
251
2523.15 Mon Oct 13 00:39:55 CEST 2008
253 - automatic removal of feeders was broken.
254 - (libeio) use a more robust method to detect whether a feeder
255 has added something to the group or not.
256
2573.1 Thu Oct 2 13:34:40 CEST 2008
258 - pre-deref the passed callback object, for increased speed
259 and decreased memory usage.
260 - call on_next_submit callback even for aio_group - impact unknown,
261 but seems more correct.
262 - $req->cb now returns the original callback.
263 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
264 requiring a thread switch.
265 - (libeio) status code of aio_futime and aio_utime was always passed 0.
266 - do some other ยต-optimisations.
267
2683.07 Sat Aug 2 16:06:13 CEST 2008
269 - do not include LIBS in autoconf tests.
270
2713.06 Tue Jul 15 12:41:32 CEST 2008
272 - move preadwritelock definition before it's first reference,
273 to make it compile again on broken platforms (they still exist)
274 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
275
2763.05 Thu Jun 19 23:23:52 CEST 2008
277 - work around perl overriding readdir etc. with thread-unsafe
278 (sic!) versions.
279
2803.04 Wed Jun 18 01:35:38 CEST 2008
281 - (libeio) fix eio_mknod, which confused it's arguments.
282 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
283 is stupid.
284 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
285 - (libeio) fix a bug that could potentially cause IO::AIO
286 not to get initialised properly.
287
2883.03 Thu May 29 05:33:30 CEST 2008
289 - (libeio) correctly call pthread_attr_destroy ().
290 - (libeio) work around broken bsd headers once more.
291 - reduce shared library size again by not including wrappers.
292 - max_outstanding could cause poll to enter a busy-waiting loop.
293 - document the new IO::AIO::poll_cb result value.
294
2953.02 Mon May 12 02:32:02 CEST 2008
296 - fix a memory leak on aio_readlink.
297 - bring back working fchmod.
298 - nop and busy now set result to 0.
299 - set errno to ENOMEM when allocation fails.
300
3013.01 Sun May 11 03:07:03 CEST 2008
302 - (libeio) make it compile on systems without readahead or readdir_r.
303 - (libeio) improve configure check for readahead availability.
304 - do not try to link against -lrt.
305 - use a separate configure script for IO::AIO (not the libeio one).
306
3073.0 Sun May 11 00:57:14 CEST 2008
308 - added bin/treescan to the distribution.
309 - switched to using libeio.
310 - LOTS OF INCOMPATIBLE CHANGES:
311 - remove signal functionality, it is not worth the effort.
312 - max_outstanding no longer returns the previous number of requests.
313 - poll_cb no longer returns number of requests.
314
3152.62 Sat Apr 26 13:59:33 CEST 2008
316 - port to solaris perls configured for old posix
317 (analysed by Jost Krieger).
318 - keep a reference to the perl filehandle object in aio_close,
319 so it doesn't get closed prematurely, leading to ugly races.
320
3212.61 Wed Apr 16 18:45:02 CEST 2008
322 - fix treescan output duplication and improve output ordering.
323 also display files given on the commandline.
324 - use a different algorithm for aio_close that is faster
325 and probably has even lower chances of blocking.
326 - do our own stack memory management for threads - linux
327 allocates outrageous amounts of VM (not so bad unless you
328 use mlockall...), which severely limits the number of threads
329 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
330 and 4096 * sizeof (long) (usually this is 16..64k).
331
3322.6 Sun Mar 30 08:28:11 CEST 2008
333 - added aio_sync.
334 - added aio_pathsync.
335 - fix prototypes of (void) functions.
336
3372.51 Sat Oct 6 16:04:54 CEST 2007
338 - perlio isn't generally threadsafe, so aio_close could not work reliably.
339 aio_close now tries a safe hack that might not be that asynchronous
340 (see the manpage for details).
341 - discard callback return values as to not grow the stack endlessly
342 when poll_cb handles many requests without returning.
343 - minor code cleanups.
344
3452.5 Thu Oct 4 14:49:08 CEST 2007
346 - replaced _fd2fh with faster xs code.
347 - aio_close will now try to do "the right thing" and thus might
348 work sensibly for the very first time.
349
3502.41 Mon Sep 24 21:28:21 CEST 2007
351 - after fork, invest some work to make sure that the poll_fileno
352 stays stable (by dup2'ing the new fd over the old one), to make
353 it easier for programs/libs that don't control their forking
354 behaviour and cannot recreate their watchers.
355
3562.4 Sun Aug 5 18:44:22 CEST 2007
357 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
358 successfully demonstrated that you can block on futimes...).
359 - allow undef as fileoffset for aio_read/write and use read/write(2)
360 internally (useful for sockets or O_APPEND handles).
361 - allow undef for length in aio_write.
362 - negative dataoffsets work as expected now in aio_read/aio_write.
363 - use NV instead of UV for 32 bit perls and file offsets, as NVs
364 have a larger range then.
365 - shared code between BDB and IO::AIO.
366 - aio_busy was completely broken. now fixed.
367 - readahead emulation now returns something.
368 - correctly set errno to ENOSYS on unimplemented functions
369 (should never happen, though).
370 - large changes to make it partially compile and run on win32,
371 but win32 lacks too much functionality, and perl overrides way
372 too many functions with crashing versions.
373
3742.33 Tue Jan 23 23:55:41 CET 2007
375 - fix install path (Andreas J. Koenig).
376
3772.32 Mon Jan 22 16:56:23 CET 2007
378 - added aio_rmtree.
379 - wow, aio_mkdir was missing.
380 - aio_load did return undef on error, not -1.
381 - use prefixexp not prefix in autoconf.pm
382 (suggested by ... rt.cpan.org unreachable).
383 - avoid installing autoconf.pm.
384
3852.31 Sat Jan 6 03:46:02 CET 2007
386 - added aio_load.
387
3882.3 Sat Dec 23 05:48:07 CET 2006
389 - fix off-by-one bug in aio_read, causing memory corruption
390 or crashes.
391
3922.21 Fri Dec 22 05:03:38 CET 2006
393 - minor doc updates.
394 - minor cleanups.
395 - IO::AIO::poll returns request count.
396 - undocumented and unfinished async-signal-reporting.
397
3982.2 Tue Oct 31 00:31:00 CET 2006
399 - minor doc updates.
400 - added aio_readlink.
401 - properly zero-terminate aio_read buffer.
402 - fix aio_read/write with nonzero dataoffset.
403 - reduced size of aio request structure.
404 - better diagnostics when pathnames etc. are not byte-encoded;
405 do not leak request in that case, either.
406
4072.1 Sun Oct 29 02:01:57 CET 2006
408 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
409 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
410 - fix a bug in aio_move where it would fail everytime
411 it would have to copy files manually.
412 - doc updates.
413 - start threads only on (very low) demand.
414 - end superfluous threads automatically after 10s idling.
415 - add IO::AIO::max_idle to control this.
416 - some tuning applied to random places.
417 - add aio_mknod.
418
4192.0 Thu Oct 26 18:27:58 CEST 2006
420 - minor incompatibility: max_outstanding semantics have changed.
421 - major rewrite, consider all functionality EXPERIMENTAL.
422 - aio requests can be cancelled.
423 - callbacks can be (re-)set later.
424 - aio requests can choose between 9 priorities.
425 - add aio_group: aio requests can be grouped
426 into composite requests.
427 - generator interface for groups.
428 - add IO::AIO::poll_some.
429 - major documentation improvements.
430 - very minor bugfixes.
431 - add aio_nop for dummy requests.
432 - add aio_busy mainly for benchmarking and debugging.
433 - use "fast" mutexes on linux.
434 - use dynamic (and larger) buffers instead of
435 putting them onto the stack.
436 - optimise x86 and amd64 a bit.
437 - better error checking when ENOMEM.
438 - hopefully fix mem and dirp leaks on fork.
439 - warn about broken perl malloc.
440 - compiles on cygwin (but pread is broken on cygwin
441 which is not detected by autoconf, so you have to
442 edit autoconf/config.h yourself to enable emulation).
443
4441.8 Sat Jun 24 22:20:44 CEST 2006
445 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
446
4471.73 Wed Mar 1 22:49:32 CET 2006
448 - codename "jost"
449 - AIX/Solaris(?) aren't being helpful again, hardcode a value
450 for NAME_MAX and drive with your eyes closed (reported by
451 wcooley@nakedape.cc).
452
4531.72 Thu Feb 2 00:40:44 CET 2006
454 - another minor bug in aio_scandir, again, the callback was called
455 twice when the directory can't be stat'ed.
456
4571.71 Mon Dec 26 20:20:03 CET 2005
458 - grr, another minor bug in aio_scandir, this time resulting
459 in a runtime error.
460
4611.7 Mon Dec 26 19:29:48 CET 2005
462 - aio_scandir errornously called callback twice in some cases.
463 - added AnyEvent example.
464
4651.61 Wed Sep 7 19:40:42 CEST 2005
466 - no longer include $Config{libs}, as distros include too much
467 garbage in there that is not installed on typical systems
468 (for example, debian links perl against -lgdbm and many more
469 libraries despite perl not needing it, slowing down startup and
470 wasting memory).
2 471
31.6 Tue Aug 30 17:44:44 CEST 2005 4721.6 Tue Aug 30 17:44:44 CEST 2005
4 - added aio_readdir, aio_scandir. 473 - added aio_readdir, aio_scandir.
5 - added aio_sendfile, including sendfile emulation when sendfile 474 - added aio_sendfile, including sendfile emulation when sendfile
6 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev 475 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
12 - somebody nagged about C89 compatibility, so this release should 481 - somebody nagged about C89 compatibility, so this release should
13 be C89 compatible, but no guarantees for future ones. 482 be C89 compatible, but no guarantees for future ones.
14 - abort when the configure script fails. 483 - abort when the configure script fails.
15 484
161.4 Wed Aug 17 08:07:27 CEST 2005 4851.4 Wed Aug 17 08:07:27 CEST 2005
17 - forget to recreate the pipe after forking, this could cause 486 - forgot to recreate the pipe after forking, this could cause
18 deadlocks. 487 deadlocks.
19 488
201.3 Wed Aug 17 07:25:54 CEST 2005 4891.3 Wed Aug 17 07:25:54 CEST 2005
21 - properly propagate exceptions from callbacks, instead of silently 490 - properly propagate exceptions from callbacks, instead of silently
22 eating them. 491 eating them.

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