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Comparing IO-AIO/Changes (file contents):
Revision 1.107 by root, Wed Nov 8 01:57:43 2006 UTC vs.
Revision 1.304 by root, Fri Aug 24 15:32:48 2012 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc.
4TODO: aio_cptree/mvtree/rmtree 3TODO: aio_cptree/mvtree
5TODO: aio_utime, aio_chmod, aio_chown? should simply stat/open first?
6TODO: reduce condvar fairness: schedule hot-cache-threads first? 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...
7 12
13 - rename aio_fallocate to aio_allocate, to match documentation.
14 - add list of linux fsid values to aio_statvfs docs.
15
164.16 Tue Aug 14 05:39:03 CEST 2012
17 - aio_statvfs was wromgly marked for wd emulation, causing
18 it to malfunctiobn for paths.
19 - fix a crash in aio_fiemap, when used on ranges without any
20 extents.
21 - work around linux kernel bug (at least in 3.2): kernel might
22 trash fiemap input arguments.
23 - work around linux kernel bug (at least in 3.2): kernel does not
24 set FIEMAP_EXTENT_LAST on last segment.
25 - work around linux kernel bug (at least in 3.2): kernel silently
26 truncates segment count if a file.
27 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
28 to quick overview.
29 - splice can corrupt data.
30 - (libeio) remove pread/pwrite emulation.
31 - do not grow mmaped scalars in aio_read.
32 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
33 - provide pread/pwrite for win32, making it link again on native win32.
34
354.15 Tue Apr 10 06:59:00 CEST 2012
36 - always include linux/types.h for fiemap, for compatibility to
37 ancient systems (Paul Howarth).
38 - experimental support for IO::AIO::splice and ::tee (no aio_...).
39 - provide SEEK_HOLE and SEEK_DATA, if available.
40 - work around (again!) an immensely stupid bug in RHEL, defining
41 autoconf macros in linux system headers (analysed by Paul Howarth).
42
434.14 Sat Apr 7 02:45:18 CEST 2012
44 - fix stat structure usage on windows, which caused bogus stat results.
45 - (libeio) make readahead emulation behave more like actual readahead by never failing.
46 - new request aio_seek.
47 - new request aio_fiemap.
48 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
49
504.12 Fri Dec 30 08:51:25 CET 2011
51 - realpath would return a random value if the name was too long,
52 instead of -1.
53 - port to c89.
54
554.11 Mon Oct 10 00:24:11 CEST 2011
56 - libeio didn't compile on !linux (Paul Howarth).
57
584.1 Sun Oct 9 10:24:11 CEST 2011
59 - IO::AIO did access uninitialised memory on unsuccessful stats.
60 - (libeio) added syncfs syscall wrapper.
61 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
62 - (libeio) support multiple indepenent working directories.
63 - applied speling corrections by Nicholas Bamber.
64 - tune treescan #threads and #outstanding requests a bit.
65 - reduce the number of file descriptors in use at any one time
66 in treescan, to avoid running out of them (and using too much ram).
67 - take advantage of working directoriy abstractions
68 in aio_scandir and treescan.
69 - reduce compiled size by ~10% by not inlining some key functionality.
70 - added --progress switch to treescan.
71
724.0 Mon Jul 18 05:01:10 CEST 2011
73 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
74 see FORK BEHAVIOUR in manpage for details.
75 - passes testsuite on win32 now and may actually work
76 (activestate 5.10.1 / MSVC6, YMMV).
77 - (libeio) fix a deadlock where a wakeup signal could be missed when
78 a timeout occured at the same time.
79 - (libeio) added realpath.
80 - (libeio) added fallocate.
81 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
82 - (libeio) do not acquire any locks when forking.
83 - (libeio) use fewer time() syscalls when waiting for new requests.
84
853.93 Wed Jun 29 23:44:18 CEST 2011
86 - ECB.H WAS MISSING.
87
883.92 Wed Jun 29 14:45:41 CEST 2011
89 - ecb.h was missing.
90
913.91 Wed Jun 29 13:24:42 CEST 2011
92 - (libeio) work around a Linux (and likely FreeBSD and other
93 kernels) bug where sendfile would not transfer all the requested
94 bytes on large transfers, using a heuristic.
95 - buggy sendfile caused aio_move/copy to sometimes fail for big
96 files (fortunately it checks that the whole file has been
97 transferred...)
98 - use libecb for higher performance and higher portability.
99 - (libeio) disable sendfile on darwin, it's too broken.
100 - disable fork tests on !linux, as only linux supports mixing
101 pthread and fork in perl.
102 - document the fact that fork doesn't work anymore when using
103 this module, on anything !GNU/Linux.
104 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
105 run on a 0.1MHz cpu. Or so.
106
1073.9 Fri May 27 02:43:47 CEST 2011
108 - (libeio) fix memory corruption in aio_readdirx for the flags
109 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
110 - add lots of newer POSIX and GNU/Linux-specific open
111 flags.
112
1133.8 Sun Mar 27 12:25:33 CEST 2011
114 - use nonstandard but maybe-working-on-bsd fork technique.
115 - support a max_idle value of 0.
116 - support setting of idle timeout value (IO::AIO::idle_timeout).
117
1183.72 Fri Feb 11 04:25:38 CET 2011
119 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
120 - aio_mknod always used a dev_t value of 0.
121 - new treescan option: --grep.
122 - add more S_IF macros, and major/minor/makedev "macros".
123
1243.71 Thu Dec 30 08:18:46 CET 2010
125 - the numerical result value passed to callbacks did not stringify
126 correctly, due to internal reuse and failure to reset the sv flags.
127 - actually test for posix_[mf]advise, as at least uClibc defines
128 _POSIX_ADVISORY_INFO without actually having any of the required
129 funcitonality. ugh.
130
1313.7 Mon Nov 1 23:00:34 CET 2010
132 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
133 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
134 - document the sad state of affairs w.r.t. pthread on many bsds.
135 - do not enable mmap on systems without _POSIX_MAPPED_FILES
136 (openbsd 4.8).
137 - do not leak memory in IO::AIO::mmap when the scalar already
138 had string-data.
139 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
140 them.
141 - cache the result IV, for a minor speedup in the common case.
142 - croak when an mmapped-scalar changes location, to detect
143 user-errors better.
144 - fix aio_readlink prototype.
145
1463.65 Wed Mar 31 02:45:05 CEST 2010
147 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
148 cut off long pathnames in aio_readlink (based on patch by
149 Rasmus Andersson).
150 - a double fork partially killed the event pipe (great testcase
151 by dormando). affects IO::AIO, BDB and Async::Interrupt.
152 - suck steve's dick and rename our symbols to avoid colliding
153 with nonstandard identifier spam on the broken os x pseudo-os.
154 affects IO::AIO and BDB.
155
1563.6 Mon Jan 11 00:43:39 CET 2010
157 - (libeio) more fixes for the freebsd/apple sendfile - broken by
158 manpage standards, but apparently correct accoridng to actual
159 kernel sources.
160 - add IO::AIO::mmap/munmap support.
161 - add IO::AIO::m(un)lockall support.
162 - clean up manpage.
163
1643.5 Thu Jan 7 21:25:04 CET 2010
165 - (liebio) fix freebsd sendfile (Vanilla Hsu).
166 - (libeio) also fix darwin sendfile that suffered from a similar bug.
167 - add aio_statvfs as interface to statvfs/fstatvfs.
168 - work around buggy symlink() on cygwin in the testsuite.
169 - wtf. freebsd-8.0 actually passes the testsuite! I knew
170 they could implement fork and semaphores one day! cheers!
171
1723.4 Sat Jan 2 15:13:04 CET 2010
173 - (libeio) max_poll_time was not properly converted to ticks.
174 - clarify cancel_subs description.
175 - IO::AIO::sendfile did not actually return the return value
176 from the sendfile call.
177 - implement aio_msync, aio_mtouch.
178 - (libeio) tentatively support darwin in sendfile.
179
1803.31 Thu Nov 12 02:14:29 CET 2009
181 - fix result status documentation of aio_copy, aio_move.
182 - speed up object creation considerably by avoiding
183 hash lookups.
184
1853.3 Wed Aug 5 13:52:58 CEST 2009
186 - use common::sense.
187 - use common schmorp.h header.
188 - allow integers (file descriptors) in addition to file handles.
189 - take advantage of linux' eventfd (but it seems slower on smp?).
190 - use poll not select on posix platforms.
191
1923.261 Wed Jul 1 10:11:51 CEST 2009
193 - more 0S X workarounds (patch by Tokuhiro Matsuno).
194
1953.26 Tue Jun 30 09:33:26 CEST 2009
196 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
197 try to work around this horribly broken OS in a somewhat hackish
198 way. might help other os's too.
199
2003.25 Sat Jun 27 05:18:26 CEST 2009
201 - added IO::AIO::fadvise and IO::AIO::sendfile.
202 - (libeio) replaced quicksort+insertion sort by a tuned radix
203 sort + insertion sort, resulting in comparable runtime (usually
204 faster) to the old version, but without any ill side effects on
205 degenerated (for quicksort) data.
206 - (libeio) correctly sort dirs by inodes if we have perfect type
207 knowledge and DIRS_FIRST is used.
208 - (libeio) internally the wrong DT_* constants were used, but no
209 known system has differing EIO_DT_*/DT_* values, so not an issue.
210 - removed a (harmless) assert that was left over on the code
211 but should not have been.
212 - use more correct types (change IO length from IV to VAL64,
213 which makes a difference on systems without 64 bit perls).
214
2153.23 Sat Jun 13 16:57:58 CEST 2009
216 - fix off-by-one bug in aio_readdir that was introduced in the
217 rushed 3.22 release.
218
2193.22 Sat Jun 13 15:32:40 CEST 2009
220 - speed up readdirx sort algorithm slightly.
221 - bin/treescan was missing from distro tarball.
222
2233.21 Fri Jun 12 18:45:53 CEST 2009
224 - new options --dirs and --files for treescan.
225 - install bin/treescan by default.
226 - (libeio) aio_readdir can now be cancelled while executing.
227 - fix a printf format string for 64 bit systems (could lead
228 to problems on big endian 64 bit systems).
229 - do not use qsort() but our own algorithm: glibc initialises
230 the whole locale and I/O subsystem inside qsort, causing
231 a stack overflow on 32 bit machines. The new sort uses much less
232 stack and is more than twice as fast in typical situations.
233
2343.2 Sun Jun 7 20:30:05 CEST 2009
235 - (libeio) pwrite emulation was even more flawed than intended and did
236 not restore the file offset.
237 - add aio_readdirx, which can return inode and filetype and sort
238 the names in various ways.
239 - unfortunately, utime, chmod, chown on an open file that has just
240 been written can easily block, which caused aio_copy to block the
241 process. no more!
242 - no longer rely on dst path in aio_copy when futime is available.
243
2443.19 Tue Apr 21 22:05:21 CEST 2009
245 - more perl 5.10 workarounds for aio_read and write.
246 - aio_write no longer modifies the sv (if possible).
247 - aio_read now works correctly with magic values.
248
2493.18 Sun Apr 19 21:17:32 CEST 2009
250 - better diagnostics when some aio_* functions get passed an illegal fh.
251 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
252
2533.17 Thu Nov 20 08:45:36 CET 2008
254 - (libeio) added aio_sync_file_range (untested).
255 - add aio_busy to @IO::AIO::AIO_REQ.
256
2573.16 Wed Oct 22 18:28:01 CEST 2008
258 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
259 part to improve portability to perl 5.8 (reported by szymon).
260
2613.15 Mon Oct 13 00:39:55 CEST 2008
262 - automatic removal of feeders was broken.
263 - (libeio) use a more robust method to detect whether a feeder
264 has added something to the group or not.
265
2663.1 Thu Oct 2 13:34:40 CEST 2008
267 - pre-deref the passed callback object, for increased speed
268 and decreased memory usage.
269 - call on_next_submit callback even for aio_group - impact unknown,
270 but seems more correct.
271 - $req->cb now returns the original callback.
272 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
273 requiring a thread switch.
274 - (libeio) status code of aio_futime and aio_utime was always passed 0.
275 - do some other ยต-optimisations.
276
2773.07 Sat Aug 2 16:06:13 CEST 2008
278 - do not include LIBS in autoconf tests.
279
2803.06 Tue Jul 15 12:41:32 CEST 2008
281 - move preadwritelock definition before it's first reference,
282 to make it compile again on broken platforms (they still exist)
283 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
284
2853.05 Thu Jun 19 23:23:52 CEST 2008
286 - work around perl overriding readdir etc. with thread-unsafe
287 (sic!) versions.
288
2893.04 Wed Jun 18 01:35:38 CEST 2008
290 - (libeio) fix eio_mknod, which confused it's arguments.
291 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
292 is stupid.
293 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
294 - (libeio) fix a bug that could potentially cause IO::AIO
295 not to get initialised properly.
296
2973.03 Thu May 29 05:33:30 CEST 2008
298 - (libeio) correctly call pthread_attr_destroy ().
299 - (libeio) work around broken bsd headers once more.
300 - reduce shared library size again by not including wrappers.
301 - max_outstanding could cause poll to enter a busy-waiting loop.
302 - document the new IO::AIO::poll_cb result value.
303
3043.02 Mon May 12 02:32:02 CEST 2008
305 - fix a memory leak on aio_readlink.
306 - bring back working fchmod.
307 - nop and busy now set result to 0.
308 - set errno to ENOMEM when allocation fails.
309
3103.01 Sun May 11 03:07:03 CEST 2008
311 - (libeio) make it compile on systems without readahead or readdir_r.
312 - (libeio) improve configure check for readahead availability.
313 - do not try to link against -lrt.
314 - use a separate configure script for IO::AIO (not the libeio one).
315
3163.0 Sun May 11 00:57:14 CEST 2008
317 - added bin/treescan to the distribution.
318 - switched to using libeio.
319 - LOTS OF INCOMPATIBLE CHANGES:
320 - remove signal functionality, it is not worth the effort.
321 - max_outstanding no longer returns the previous number of requests.
322 - poll_cb no longer returns number of requests.
323
3242.62 Sat Apr 26 13:59:33 CEST 2008
325 - port to solaris perls configured for old posix
326 (analysed by Jost Krieger).
327 - keep a reference to the perl filehandle object in aio_close,
328 so it doesn't get closed prematurely, leading to ugly races.
329
3302.61 Wed Apr 16 18:45:02 CEST 2008
331 - fix treescan output duplication and improve output ordering.
332 also display files given on the commandline.
333 - use a different algorithm for aio_close that is faster
334 and probably has even lower chances of blocking.
335 - do our own stack memory management for threads - linux
336 allocates outrageous amounts of VM (not so bad unless you
337 use mlockall...), which severely limits the number of threads
338 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
339 and 4096 * sizeof (long) (usually this is 16..64k).
340
3412.6 Sun Mar 30 08:28:11 CEST 2008
342 - added aio_sync.
343 - added aio_pathsync.
344 - fix prototypes of (void) functions.
345
3462.51 Sat Oct 6 16:04:54 CEST 2007
347 - perlio isn't generally threadsafe, so aio_close could not work reliably.
348 aio_close now tries a safe hack that might not be that asynchronous
349 (see the manpage for details).
350 - discard callback return values as to not grow the stack endlessly
351 when poll_cb handles many requests without returning.
352 - minor code cleanups.
353
3542.5 Thu Oct 4 14:49:08 CEST 2007
355 - replaced _fd2fh with faster xs code.
356 - aio_close will now try to do "the right thing" and thus might
357 work sensibly for the very first time.
358
3592.41 Mon Sep 24 21:28:21 CEST 2007
360 - after fork, invest some work to make sure that the poll_fileno
361 stays stable (by dup2'ing the new fd over the old one), to make
362 it easier for programs/libs that don't control their forking
363 behaviour and cannot recreate their watchers.
364
3652.4 Sun Aug 5 18:44:22 CEST 2007
366 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
367 successfully demonstrated that you can block on futimes...).
368 - allow undef as fileoffset for aio_read/write and use read/write(2)
369 internally (useful for sockets or O_APPEND handles).
370 - allow undef for length in aio_write.
371 - negative dataoffsets work as expected now in aio_read/aio_write.
372 - use NV instead of UV for 32 bit perls and file offsets, as NVs
373 have a larger range then.
374 - shared code between BDB and IO::AIO.
375 - aio_busy was completely broken. now fixed.
376 - readahead emulation now returns something.
377 - correctly set errno to ENOSYS on unimplemented functions
378 (should never happen, though).
379 - large changes to make it partially compile and run on win32,
380 but win32 lacks too much functionality, and perl overrides way
381 too many functions with crashing versions.
382
3832.33 Tue Jan 23 23:55:41 CET 2007
384 - fix install path (Andreas J. Koenig).
385
3862.32 Mon Jan 22 16:56:23 CET 2007
387 - added aio_rmtree.
388 - wow, aio_mkdir was missing.
389 - aio_load did return undef on error, not -1.
390 - use prefixexp not prefix in autoconf.pm
391 (suggested by ... rt.cpan.org unreachable).
392 - avoid installing autoconf.pm.
393
3942.31 Sat Jan 6 03:46:02 CET 2007
395 - added aio_load.
396
3972.3 Sat Dec 23 05:48:07 CET 2006
398 - fix off-by-one bug in aio_read, causing memory corruption
399 or crashes.
400
4012.21 Fri Dec 22 05:03:38 CET 2006
402 - minor doc updates.
8 - minor cleanups. 403 - minor cleanups.
9 - IO::AIO::poll returns request count. 404 - IO::AIO::poll returns request count.
405 - undocumented and unfinished async-signal-reporting.
10 406
112.2 Tue Oct 31 00:31:00 CET 2006 4072.2 Tue Oct 31 00:31:00 CET 2006
12 - minor doc updates. 408 - minor doc updates.
13 - added aio_readlink. 409 - added aio_readlink.
14 - properly zero-terminate aio_read buffer. 410 - properly zero-terminate aio_read buffer.

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