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Comparing IO-AIO/Changes (file contents):
Revision 1.125 by root, Fri Jun 1 14:40:01 2007 UTC vs.
Revision 1.282 by root, Tue Oct 4 18:22:37 2011 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: better autoconf.pm that can return LIBS etc.
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: splice/tee/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
8 11
92.4 12TODO: rewrite scandir etc. to take avdantage of IO::AIO::WD
10 - fix aio_busy w.r.t. fractional delays. 13TODO: allow lone $wd to be the same as $wd, "."
11 - add aio_chmod, aio_chown, aio_utime (linux successfully demonstrated 14 - IO::AIO did access uninitialised memory on unsuccessful stats.
15 - (libeio) added syncfs syscall wrapper.
16 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
17 - (libeio) support multiple indepenent working directories.
18 - applied speling corrections by Nicholas Bamber.
19 - tune treescan #threads and #outstanding requests a bit.
20 - reduce the number of file descriptors in use at any one time
21 in treescan, to avoid running out of them (and using too much ram).
22 - take advantage of working directoriy abstractions
23 in aio_scandir and treescan.
24 - reduce compiled size by ~10% by not inlining some key functionality.
25 - added --progress switch to treescan.
26
274.0 Mon Jul 18 05:01:10 CEST 2011
28 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
29 see FORK BEHAVIOUR in manpage for details.
30 - passes testsuite on win32 now and may actually work
31 (activestate 5.10.1 / MSVC6, YMMV).
32 - (libeio) fix a deadlock where a wakeup signal could be missed when
33 a timeout occured at the same time.
34 - (libeio) added realpath.
35 - (libeio) added fallocate.
36 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
37 - (libeio) do not acquire any locks when forking.
38 - (libeio) use fewer time() syscalls when waiting for new requests.
39
403.93 Wed Jun 29 23:44:18 CEST 2011
41 - ECB.H WAS MISSING.
42
433.92 Wed Jun 29 14:45:41 CEST 2011
44 - ecb.h was missing.
45
463.91 Wed Jun 29 13:24:42 CEST 2011
47 - (libeio) work around a Linux (and likely FreeBSD and other
48 kernels) bug where sendfile would not transfer all the requested
49 bytes on large transfers, using a heuristic.
50 - buggy sendfile caused aio_move/copy to sometimes fail for big
51 files (fortunately it checks that the whole file has been
52 transferred...)
53 - use libecb for higher performance and higher portability.
54 - (libeio) disable sendfile on darwin, it's too broken.
55 - disable fork tests on !linux, as only linux supports mixing
56 pthread and fork in perl.
57 - document the fact that fork doesn't work anymore when using
58 this module, on anything !GNU/Linux.
59 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
60 run on a 0.1MHz cpu. Or so.
61
623.9 Fri May 27 02:43:47 CEST 2011
63 - (libeio) fix memory corruption in aio_readdirx for the flags
64 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
65 - add lots of newer POSIX and GNU/Linux-specific open
66 flags.
67
683.8 Sun Mar 27 12:25:33 CEST 2011
69 - use nonstandard but maybe-working-on-bsd fork technique.
70 - support a max_idle value of 0.
71 - support setting of idle timeout value (IO::AIO::idle_timeout).
72
733.72 Fri Feb 11 04:25:38 CET 2011
74 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
75 - aio_mknod always used a dev_t value of 0.
76 - new treescan option: --grep.
77 - add more S_IF macros, and major/minor/makedev "macros".
78
793.71 Thu Dec 30 08:18:46 CET 2010
80 - the numerical result value passed to callbacks did not stringify
81 correctly, due to internal reuse and failure to reset the sv flags.
82 - actually test for posix_[mf]advise, as at least uClibc defines
83 _POSIX_ADVISORY_INFO without actually having any of the required
84 funcitonality. ugh.
85
863.7 Mon Nov 1 23:00:34 CET 2010
87 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
88 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
89 - document the sad state of affairs w.r.t. pthread on many bsds.
90 - do not enable mmap on systems without _POSIX_MAPPED_FILES
91 (openbsd 4.8).
92 - do not leak memory in IO::AIO::mmap when the scalar already
93 had string-data.
94 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
95 them.
96 - cache the result IV, for a minor speedup in the common case.
97 - croak when an mmapped-scalar changes location, to detect
98 user-errors better.
99 - fix aio_readlink prototype.
100
1013.65 Wed Mar 31 02:45:05 CEST 2010
102 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
103 cut off long pathnames in aio_readlink (based on patch by
104 Rasmus Andersson).
105 - a double fork partially killed the event pipe (great testcase
106 by dormando). affects IO::AIO, BDB and Async::Interrupt.
107 - suck steve's dick and rename our symbols to avoid colliding
108 with nonstandard identifier spam on the broken os x pseudo-os.
109 affects IO::AIO and BDB.
110
1113.6 Mon Jan 11 00:43:39 CET 2010
112 - (libeio) more fixes for the freebsd/apple sendfile - broken by
113 manpage standards, but apparently correct accoridng to actual
114 kernel sources.
115 - add IO::AIO::mmap/munmap support.
116 - add IO::AIO::m(un)lockall support.
117 - clean up manpage.
118
1193.5 Thu Jan 7 21:25:04 CET 2010
120 - (liebio) fix freebsd sendfile (Vanilla Hsu).
121 - (libeio) also fix darwin sendfile that suffered from a similar bug.
122 - add aio_statvfs as interface to statvfs/fstatvfs.
123 - work around buggy symlink() on cygwin in the testsuite.
124 - wtf. freebsd-8.0 actually passes the testsuite! I knew
125 they could implement fork and semaphores one day! cheers!
126
1273.4 Sat Jan 2 15:13:04 CET 2010
128 - (libeio) max_poll_time was not properly converted to ticks.
129 - clarify cancel_subs description.
130 - IO::AIO::sendfile did not actually return the return value
131 from the sendfile call.
132 - implement aio_msync, aio_mtouch.
133 - (libeio) tentatively support darwin in sendfile.
134
1353.31 Thu Nov 12 02:14:29 CET 2009
136 - fix result status documentation of aio_copy, aio_move.
137 - speed up object creation considerably by avoiding
138 hash lookups.
139
1403.3 Wed Aug 5 13:52:58 CEST 2009
141 - use common::sense.
142 - use common schmorp.h header.
143 - allow integers (file descriptors) in addition to file handles.
144 - take advantage of linux' eventfd (but it seems slower on smp?).
145 - use poll not select on posix platforms.
146
1473.261 Wed Jul 1 10:11:51 CEST 2009
148 - more 0S X workarounds (patch by Tokuhiro Matsuno).
149
1503.26 Tue Jun 30 09:33:26 CEST 2009
151 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
152 try to work around this horribly broken OS in a somewhat hackish
153 way. might help other os's too.
154
1553.25 Sat Jun 27 05:18:26 CEST 2009
156 - added IO::AIO::fadvise and IO::AIO::sendfile.
157 - (libeio) replaced quicksort+insertion sort by a tuned radix
158 sort + insertion sort, resulting in comparable runtime (usually
159 faster) to the old version, but without any ill side effects on
160 degenerated (for quicksort) data.
161 - (libeio) correctly sort dirs by inodes if we have perfect type
162 knowledge and DIRS_FIRST is used.
163 - (libeio) internally the wrong DT_* constants were used, but no
164 known system has differing EIO_DT_*/DT_* values, so not an issue.
165 - removed a (harmless) assert that was left over on the code
166 but should not have been.
167 - use more correct types (change IO length from IV to VAL64,
168 which makes a difference on systems without 64 bit perls).
169
1703.23 Sat Jun 13 16:57:58 CEST 2009
171 - fix off-by-one bug in aio_readdir that was introduced in the
172 rushed 3.22 release.
173
1743.22 Sat Jun 13 15:32:40 CEST 2009
175 - speed up readdirx sort algorithm slightly.
176 - bin/treescan was missing from distro tarball.
177
1783.21 Fri Jun 12 18:45:53 CEST 2009
179 - new options --dirs and --files for treescan.
180 - install bin/treescan by default.
181 - (libeio) aio_readdir can now be cancelled while executing.
182 - fix a printf format string for 64 bit systems (could lead
183 to problems on big endian 64 bit systems).
184 - do not use qsort() but our own algorithm: glibc initialises
185 the whole locale and I/O subsystem inside qsort, causing
186 a stack overflow on 32 bit machines. The new sort uses much less
187 stack and is more than twice as fast in typical situations.
188
1893.2 Sun Jun 7 20:30:05 CEST 2009
190 - (libeio) pwrite emulation was even more flawed than intended and did
191 not restore the file offset.
192 - add aio_readdirx, which can return inode and filetype and sort
193 the names in various ways.
194 - unfortunately, utime, chmod, chown on an open file that has just
195 been written can easily block, which caused aio_copy to block the
196 process. no more!
197 - no longer rely on dst path in aio_copy when futime is available.
198
1993.19 Tue Apr 21 22:05:21 CEST 2009
200 - more perl 5.10 workarounds for aio_read and write.
201 - aio_write no longer modifies the sv (if possible).
202 - aio_read now works correctly with magic values.
203
2043.18 Sun Apr 19 21:17:32 CEST 2009
205 - better diagnostics when some aio_* functions get passed an illegal fh.
206 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
207
2083.17 Thu Nov 20 08:45:36 CET 2008
209 - (libeio) added aio_sync_file_range (untested).
210 - add aio_busy to @IO::AIO::AIO_REQ.
211
2123.16 Wed Oct 22 18:28:01 CEST 2008
213 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
214 part to improve portability to perl 5.8 (reported by szymon).
215
2163.15 Mon Oct 13 00:39:55 CEST 2008
217 - automatic removal of feeders was broken.
218 - (libeio) use a more robust method to detect whether a feeder
219 has added something to the group or not.
220
2213.1 Thu Oct 2 13:34:40 CEST 2008
222 - pre-deref the passed callback object, for increased speed
223 and decreased memory usage.
224 - call on_next_submit callback even for aio_group - impact unknown,
225 but seems more correct.
226 - $req->cb now returns the original callback.
227 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
228 requiring a thread switch.
229 - (libeio) status code of aio_futime and aio_utime was always passed 0.
230 - do some other ยต-optimisations.
231
2323.07 Sat Aug 2 16:06:13 CEST 2008
233 - do not include LIBS in autoconf tests.
234
2353.06 Tue Jul 15 12:41:32 CEST 2008
236 - move preadwritelock definition before it's first reference,
237 to make it compile again on broken platforms (they still exist)
238 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
239
2403.05 Thu Jun 19 23:23:52 CEST 2008
241 - work around perl overriding readdir etc. with thread-unsafe
242 (sic!) versions.
243
2443.04 Wed Jun 18 01:35:38 CEST 2008
245 - (libeio) fix eio_mknod, which confused it's arguments.
246 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
247 is stupid.
248 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
249 - (libeio) fix a bug that could potentially cause IO::AIO
250 not to get initialised properly.
251
2523.03 Thu May 29 05:33:30 CEST 2008
253 - (libeio) correctly call pthread_attr_destroy ().
254 - (libeio) work around broken bsd headers once more.
255 - reduce shared library size again by not including wrappers.
256 - max_outstanding could cause poll to enter a busy-waiting loop.
257 - document the new IO::AIO::poll_cb result value.
258
2593.02 Mon May 12 02:32:02 CEST 2008
260 - fix a memory leak on aio_readlink.
261 - bring back working fchmod.
262 - nop and busy now set result to 0.
263 - set errno to ENOMEM when allocation fails.
264
2653.01 Sun May 11 03:07:03 CEST 2008
266 - (libeio) make it compile on systems without readahead or readdir_r.
267 - (libeio) improve configure check for readahead availability.
268 - do not try to link against -lrt.
269 - use a separate configure script for IO::AIO (not the libeio one).
270
2713.0 Sun May 11 00:57:14 CEST 2008
272 - added bin/treescan to the distribution.
273 - switched to using libeio.
274 - LOTS OF INCOMPATIBLE CHANGES:
275 - remove signal functionality, it is not worth the effort.
276 - max_outstanding no longer returns the previous number of requests.
277 - poll_cb no longer returns number of requests.
278
2792.62 Sat Apr 26 13:59:33 CEST 2008
280 - port to solaris perls configured for old posix
281 (analysed by Jost Krieger).
282 - keep a reference to the perl filehandle object in aio_close,
283 so it doesn't get closed prematurely, leading to ugly races.
284
2852.61 Wed Apr 16 18:45:02 CEST 2008
286 - fix treescan output duplication and improve output ordering.
287 also display files given on the commandline.
288 - use a different algorithm for aio_close that is faster
289 and probably has even lower chances of blocking.
290 - do our own stack memory management for threads - linux
291 allocates outrageous amounts of VM (not so bad unless you
292 use mlockall...), which severely limits the number of threads
293 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
294 and 4096 * sizeof (long) (usually this is 16..64k).
295
2962.6 Sun Mar 30 08:28:11 CEST 2008
297 - added aio_sync.
298 - added aio_pathsync.
299 - fix prototypes of (void) functions.
300
3012.51 Sat Oct 6 16:04:54 CEST 2007
302 - perlio isn't generally threadsafe, so aio_close could not work reliably.
303 aio_close now tries a safe hack that might not be that asynchronous
304 (see the manpage for details).
305 - discard callback return values as to not grow the stack endlessly
306 when poll_cb handles many requests without returning.
307 - minor code cleanups.
308
3092.5 Thu Oct 4 14:49:08 CEST 2007
310 - replaced _fd2fh with faster xs code.
311 - aio_close will now try to do "the right thing" and thus might
312 work sensibly for the very first time.
313
3142.41 Mon Sep 24 21:28:21 CEST 2007
315 - after fork, invest some work to make sure that the poll_fileno
316 stays stable (by dup2'ing the new fd over the old one), to make
317 it easier for programs/libs that don't control their forking
318 behaviour and cannot recreate their watchers.
319
3202.4 Sun Aug 5 18:44:22 CEST 2007
321 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
12 that you can block on futimes...). 322 successfully demonstrated that you can block on futimes...).
13 - allow undef as fileoffset for aio_read/write and use read/write(2) 323 - allow undef as fileoffset for aio_read/write and use read/write(2)
14 internally (useful for sockets or O_APPEND handles). 324 internally (useful for sockets or O_APPEND handles).
325 - allow undef for length in aio_write.
326 - negative dataoffsets work as expected now in aio_read/aio_write.
15 - use NV instead of UV for 32 bit perls and file offsets, as NVs 327 - use NV instead of UV for 32 bit perls and file offsets, as NVs
16 have a larger range then. 328 have a larger range then.
17 - shared code between BDB and IO::AIO. 329 - shared code between BDB and IO::AIO.
330 - aio_busy was completely broken. now fixed.
331 - readahead emulation now returns something.
18 - correctly set errno to ENOSYS on unimplemented functions 332 - correctly set errno to ENOSYS on unimplemented functions
19 (should never happen, though). 333 (should never happen, though).
334 - large changes to make it partially compile and run on win32,
335 but win32 lacks too much functionality, and perl overrides way
336 too many functions with crashing versions.
20 337
212.33 Tue Jan 23 23:55:41 CET 2007 3382.33 Tue Jan 23 23:55:41 CET 2007
22 - fix install path (Andreas J. Koenig). 339 - fix install path (Andreas J. Koenig).
23 340
242.32 Mon Jan 22 16:56:23 CET 2007 3412.32 Mon Jan 22 16:56:23 CET 2007

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