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Revision: 1.221
Committed: Sun Jan 10 20:37:33 2010 UTC (14 years, 4 months ago) by root
Branch: MAIN
Changes since 1.220: +1 -0 lines
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# Content
1 Revision history for IO::AIO
2
3 TODO: better autoconf.pm that can return LIBS etc.
4 TODO: aio_cptree/mvtree
5 TODO: reduce condvar fairness: schedule hot-cache-threads first?
6 TODO: splice/tee/vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7 TODO: aio_fcntl, at least for file-locking
8 TODO: fallocate, if it wouldn't be so useless.
9 TODO: IO::AIO::mmap? aio_mincore?
10
11 - (libeio) more fixes for the freebsd/apple sendfile - broken by
12 manpage standards, but apparently correct accoridng to actual
13 kernel sources.
14 - add IO::AIO::m(un)lockall support.
15 - clean up manpage.
16
17 3.5 Thu Jan 7 21:25:04 CET 2010
18 - (liebio) fix freebsd sendfile (Vanilla Hsu).
19 - (libeio) also fix darwin sendfile that suffered from a similar bug.
20 - add aio_statvfs as interface to statvfs/fstatvfs.
21 - work around buggy symlink() on cygwin in the testsuite.
22 - wtf. freebsd-8.0 actually passes the testsuite! I knew
23 they could implement fork and semaphores one day! cheers!
24
25 3.4 Sat Jan 2 15:13:04 CET 2010
26 - (libeio) max_poll_time was not properly converted to ticks.
27 - clarify cancel_subs description.
28 - IO::AIO::sendfile did not actually return the return value
29 from the sendfile call.
30 - implement aio_msync, aio_mtouch.
31 - (libeio) tentatively support darwin in sendfile.
32
33 3.31 Thu Nov 12 02:14:29 CET 2009
34 - fix result status documentation of aio_copy, aio_move.
35 - speed up object creation considerably by avoiding
36 hash lookups.
37
38 3.3 Wed Aug 5 13:52:58 CEST 2009
39 - use common::sense.
40 - use common schmorp.h header.
41 - allow integers (file descriptors) in addition to file handles.
42 - take advantage of linux' eventfd (but it seems slower on smp?).
43 - use poll not select on posix platforms.
44
45 3.261 Wed Jul 1 10:11:51 CEST 2009
46 - more 0S X workarounds (patch by Tokuhiro Matsuno).
47
48 3.26 Tue Jun 30 09:33:26 CEST 2009
49 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
50 try to work around this horribly broken OS in a somewhat hackish
51 way. might help other os's too.
52
53 3.25 Sat Jun 27 05:18:26 CEST 2009
54 - added IO::AIO::fadvise and IO::AIO::sendfile.
55 - (libeio) replaced quicksort+insertion sort by a tuned radix
56 sort + insertion sort, resulting in comparable runtime (usually
57 faster) to the old version, but without any ill side effects on
58 degenerated (for quicksort) data.
59 - (libeio) correctly sort dirs by inodes if we have perfect type
60 knowledge and DIRS_FIRST is used.
61 - (libeio) internally the wrong DT_* constants were used, but no
62 known system has differing EIO_DT_*/DT_* values, so not an issue.
63 - removed a (harmless) assert that was left over on the code
64 but should not have been.
65 - use more correct types (change IO length from IV to VAL64,
66 which makes a difference on systems without 64 bit perls).
67
68 3.23 Sat Jun 13 16:57:58 CEST 2009
69 - fix off-by-one bug in aio_readdir that was introduced in the
70 rushed 3.22 release.
71
72 3.22 Sat Jun 13 15:32:40 CEST 2009
73 - speed up readdirx sort algorithm slightly.
74 - bin/treescan was missing from distro tarball.
75
76 3.21 Fri Jun 12 18:45:53 CEST 2009
77 - new options --dirs and --files for treescan.
78 - install bin/treescan by default.
79 - (libeio) aio_readdir can now be cancelled while executing.
80 - fix a printf format string for 64 bit systems (could lead
81 to problems on big endian 64 bit systems).
82 - do not use qsort() but our own algorithm: glibc initialises
83 the whole locale and I/O subsystem inside qsort, causing
84 a stack overflow on 32 bit machines. The new sort uses much less
85 stack and is more than twice as fast in typical situations.
86
87 3.2 Sun Jun 7 20:30:05 CEST 2009
88 - (libeio) pwrite emulation was even more flawed than intended and did
89 not restore the file offset.
90 - add aio_readdirx, which can return inode and filetype and sort
91 the names in various ways.
92 - unfortunately, utime, chmod, chown on an open file that has just
93 been written can easily block, which caused aio_copy to block the
94 process. no more!
95 - no longer rely on dst path in aio_copy when futime is available.
96
97 3.19 Tue Apr 21 22:05:21 CEST 2009
98 - more perl 5.10 workarounds for aio_read and write.
99 - aio_write no longer modifies the sv (if possible).
100 - aio_read now works correctly with magic values.
101
102 3.18 Sun Apr 19 21:17:32 CEST 2009
103 - better diagnostics when some aio_* functions get passed an illegal fh.
104 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
105
106 3.17 Thu Nov 20 08:45:36 CET 2008
107 - (libeio) added aio_sync_file_range (untested).
108 - add aio_busy to @IO::AIO::AIO_REQ.
109
110 3.16 Wed Oct 22 18:28:01 CEST 2008
111 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
112 part to improve portability to perl 5.8 (reported by szymon).
113
114 3.15 Mon Oct 13 00:39:55 CEST 2008
115 - automatic removal of feeders was broken.
116 - (libeio) use a more robust method to detect whether a feeder
117 has added something to the group or not.
118
119 3.1 Thu Oct 2 13:34:40 CEST 2008
120 - pre-deref the passed callback object, for increased speed
121 and decreased memory usage.
122 - call on_next_submit callback even for aio_group - impact unknown,
123 but seems more correct.
124 - $req->cb now returns the original callback.
125 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
126 requiring a thread switch.
127 - (libeio) status code of aio_futime and aio_utime was always passed 0.
128 - do some other ยต-optimisations.
129
130 3.07 Sat Aug 2 16:06:13 CEST 2008
131 - do not include LIBS in autoconf tests.
132
133 3.06 Tue Jul 15 12:41:32 CEST 2008
134 - move preadwritelock definition before it's first reference,
135 to make it compile again on broken platforms (they still exist)
136 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
137
138 3.05 Thu Jun 19 23:23:52 CEST 2008
139 - work around perl overriding readdir etc. with thread-unsafe
140 (sic!) versions.
141
142 3.04 Wed Jun 18 01:35:38 CEST 2008
143 - (libeio) fix eio_mknod, which confused it's arguments.
144 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
145 is stupid.
146 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
147 - (libeio) fix a bug that could potentially cause IO::AIO
148 not to get initialised properly.
149
150 3.03 Thu May 29 05:33:30 CEST 2008
151 - (libeio) correctly call pthread_attr_destroy ().
152 - (libeio) work around broken bsd headers once more.
153 - reduce shared library size again by not including wrappers.
154 - max_outstanding could cause poll to enter a busy-waiting loop.
155 - document the new IO::AIO::poll_cb result value.
156
157 3.02 Mon May 12 02:32:02 CEST 2008
158 - fix a memory leak on aio_readlink.
159 - bring back working fchmod.
160 - nop and busy now set result to 0.
161 - set errno to ENOMEM when allocation fails.
162
163 3.01 Sun May 11 03:07:03 CEST 2008
164 - (libeio) make it compile on systems without readahead or readdir_r.
165 - (libeio) improve configure check for readahead availability.
166 - do not try to link against -lrt.
167 - use a separate configure script for IO::AIO (not the libeio one).
168
169 3.0 Sun May 11 00:57:14 CEST 2008
170 - added bin/treescan to the distribution.
171 - switched to using libeio.
172 - LOTS OF INCOMPATIBLE CHANGES:
173 - remove signal functionality, it is not worth the effort.
174 - max_outstanding no longer returns the previous number of requests.
175 - poll_cb no longer returns number of requests.
176
177 2.62 Sat Apr 26 13:59:33 CEST 2008
178 - port to solaris perls configured for old posix
179 (analysed by Jost Krieger).
180 - keep a reference to the perl filehandle object in aio_close,
181 so it doesn't get closed prematurely, leading to ugly races.
182
183 2.61 Wed Apr 16 18:45:02 CEST 2008
184 - fix treescan output duplication and improve output ordering.
185 also display files given on the commandline.
186 - use a different algorithm for aio_close that is faster
187 and probably has even lower chances of blocking.
188 - do our own stack memory management for threads - linux
189 allocates outrageous amounts of VM (not so bad unless you
190 use mlockall...), which severely limits the number of threads
191 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
192 and 4096 * sizeof (long) (usually this is 16..64k).
193
194 2.6 Sun Mar 30 08:28:11 CEST 2008
195 - added aio_sync.
196 - added aio_pathsync.
197 - fix prototypes of (void) functions.
198
199 2.51 Sat Oct 6 16:04:54 CEST 2007
200 - perlio isn't generally threadsafe, so aio_close could not work reliably.
201 aio_close now tries a safe hack that might not be that asynchronous
202 (see the manpage for details).
203 - discard callback return values as to not grow the stack endlessly
204 when poll_cb handles many requests without returning.
205 - minor code cleanups.
206
207 2.5 Thu Oct 4 14:49:08 CEST 2007
208 - replaced _fd2fh with faster xs code.
209 - aio_close will now try to do "the right thing" and thus might
210 work sensibly for the very first time.
211
212 2.41 Mon Sep 24 21:28:21 CEST 2007
213 - after fork, invest some work to make sure that the poll_fileno
214 stays stable (by dup2'ing the new fd over the old one), to make
215 it easier for programs/libs that don't control their forking
216 behaviour and cannot recreate their watchers.
217
218 2.4 Sun Aug 5 18:44:22 CEST 2007
219 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
220 successfully demonstrated that you can block on futimes...).
221 - allow undef as fileoffset for aio_read/write and use read/write(2)
222 internally (useful for sockets or O_APPEND handles).
223 - allow undef for length in aio_write.
224 - negative dataoffsets work as expected now in aio_read/aio_write.
225 - use NV instead of UV for 32 bit perls and file offsets, as NVs
226 have a larger range then.
227 - shared code between BDB and IO::AIO.
228 - aio_busy was completely broken. now fixed.
229 - readahead emulation now returns something.
230 - correctly set errno to ENOSYS on unimplemented functions
231 (should never happen, though).
232 - large changes to make it partially compile and run on win32,
233 but win32 lacks too much functionality, and perl overrides way
234 too many functions with crashing versions.
235
236 2.33 Tue Jan 23 23:55:41 CET 2007
237 - fix install path (Andreas J. Koenig).
238
239 2.32 Mon Jan 22 16:56:23 CET 2007
240 - added aio_rmtree.
241 - wow, aio_mkdir was missing.
242 - aio_load did return undef on error, not -1.
243 - use prefixexp not prefix in autoconf.pm
244 (suggested by ... rt.cpan.org unreachable).
245 - avoid installing autoconf.pm.
246
247 2.31 Sat Jan 6 03:46:02 CET 2007
248 - added aio_load.
249
250 2.3 Sat Dec 23 05:48:07 CET 2006
251 - fix off-by-one bug in aio_read, causing memory corruption
252 or crashes.
253
254 2.21 Fri Dec 22 05:03:38 CET 2006
255 - minor doc updates.
256 - minor cleanups.
257 - IO::AIO::poll returns request count.
258 - undocumented and unfinished async-signal-reporting.
259
260 2.2 Tue Oct 31 00:31:00 CET 2006
261 - minor doc updates.
262 - added aio_readlink.
263 - properly zero-terminate aio_read buffer.
264 - fix aio_read/write with nonzero dataoffset.
265 - reduced size of aio request structure.
266 - better diagnostics when pathnames etc. are not byte-encoded;
267 do not leak request in that case, either.
268
269 2.1 Sun Oct 29 02:01:57 CET 2006
270 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
271 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
272 - fix a bug in aio_move where it would fail everytime
273 it would have to copy files manually.
274 - doc updates.
275 - start threads only on (very low) demand.
276 - end superfluous threads automatically after 10s idling.
277 - add IO::AIO::max_idle to control this.
278 - some tuning applied to random places.
279 - add aio_mknod.
280
281 2.0 Thu Oct 26 18:27:58 CEST 2006
282 - minor incompatibility: max_outstanding semantics have changed.
283 - major rewrite, consider all functionality EXPERIMENTAL.
284 - aio requests can be cancelled.
285 - callbacks can be (re-)set later.
286 - aio requests can choose between 9 priorities.
287 - add aio_group: aio requests can be grouped
288 into composite requests.
289 - generator interface for groups.
290 - add IO::AIO::poll_some.
291 - major documentation improvements.
292 - very minor bugfixes.
293 - add aio_nop for dummy requests.
294 - add aio_busy mainly for benchmarking and debugging.
295 - use "fast" mutexes on linux.
296 - use dynamic (and larger) buffers instead of
297 putting them onto the stack.
298 - optimise x86 and amd64 a bit.
299 - better error checking when ENOMEM.
300 - hopefully fix mem and dirp leaks on fork.
301 - warn about broken perl malloc.
302 - compiles on cygwin (but pread is broken on cygwin
303 which is not detected by autoconf, so you have to
304 edit autoconf/config.h yourself to enable emulation).
305
306 1.8 Sat Jun 24 22:20:44 CEST 2006
307 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
308
309 1.73 Wed Mar 1 22:49:32 CET 2006
310 - codename "jost"
311 - AIX/Solaris(?) aren't being helpful again, hardcode a value
312 for NAME_MAX and drive with your eyes closed (reported by
313 wcooley@nakedape.cc).
314
315 1.72 Thu Feb 2 00:40:44 CET 2006
316 - another minor bug in aio_scandir, again, the callback was called
317 twice when the directory can't be stat'ed.
318
319 1.71 Mon Dec 26 20:20:03 CET 2005
320 - grr, another minor bug in aio_scandir, this time resulting
321 in a runtime error.
322
323 1.7 Mon Dec 26 19:29:48 CET 2005
324 - aio_scandir errornously called callback twice in some cases.
325 - added AnyEvent example.
326
327 1.61 Wed Sep 7 19:40:42 CEST 2005
328 - no longer include $Config{libs}, as distros include too much
329 garbage in there that is not installed on typical systems
330 (for example, debian links perl against -lgdbm and many more
331 libraries despite perl not needing it, slowing down startup and
332 wasting memory).
333
334 1.6 Tue Aug 30 17:44:44 CEST 2005
335 - added aio_readdir, aio_scandir.
336 - added aio_sendfile, including sendfile emulation when sendfile
337 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
338 support is unavailable on my solaris 8 machine, but preliminary
339 code is there. What's lacking is configury stuff and testing...).
340
341 1.5 Sat Aug 20 02:32:19 CEST 2005
342 - create the aio threads on demand only (good after forking).
343 - somebody nagged about C89 compatibility, so this release should
344 be C89 compatible, but no guarantees for future ones.
345 - abort when the configure script fails.
346
347 1.4 Wed Aug 17 08:07:27 CEST 2005
348 - forgot to recreate the pipe after forking, this could cause
349 deadlocks.
350
351 1.3 Wed Aug 17 07:25:54 CEST 2005
352 - properly propagate exceptions from callbacks, instead of silently
353 eating them.
354 - use a different fork algorithm that avoids recursive callback
355 invocations and reduces fork latency in busy processes.
356 - fix a bug where the buffer scalar in aio_read got assigned the wrong
357 length after reading.
358 - fix a bug where the child would process some outstanding requests
359 from the parent.
360 - make a copy of the callback scalar, to avoid some very uncommon
361 (but valid) usages where the callback scalar changes.
362 - the callback was never freed in aio_read/aio_write.
363 - aio_read/aio_write will now set the readonly flag on the data
364 scalar for better error reporting.
365
366 1.2 Wed Aug 17 01:22:58 CEST 2005
367 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
368 - use SvPVbyte for filenames now. You *need* to encode your strings to
369 the external filename encoding first.
370 - fix the bug where filehandles could leak (again).
371 - clarify freebsd situation: make it work and tell me how, or go away
372 with your underdocumented, broken and outdated OS.
373 - fork'ing should now be officially supported (where linux and
374 posix contradict each other, I followed posix).
375 - only call read() once per poll, not twice (speedup).
376 - new functions: aio_rmdir, aio_symlink.
377 - force callback arguments to be undef or a reference, for better
378 error catching.
379
380 1.1 Sun Aug 7 05:27:23 CEST 2005
381 - added configure script to detect availability of some calls.
382 (imperfect, as we cannot detect things like -lrt due to missing
383 feedback yet).
384 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
385 and readahead via manual reading on platforms lacking those.
386 - ported t/03_errors.t+framework by Brad Fitzpatrick
387 from Linux::AIO.
388 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
389 compile with it enabled. Probably breaks others. Oh well.
390 - try to be more careful with errno on non-threaded perls.
391 - cygwins perl insisted on a matching open mode when morphing
392 the fd to an fh.
393 - convert sv's to "byte" encoding in aio_read/aio_write. Might
394 do that for pathnames, too, in the future, so make sure you
395 properly encode your pathnames.
396
397 1.0 Fri Jul 22 10:43:30 CEST 2005
398 - aio_open did not reliably deliver (open) filehandles.
399 - all aio_*-functions keep a reference to the filehandle so
400 it doesn't go away while the aio requests is working on it.
401 - disable warnings in AIO.pm.
402
403 0.9 Wed Jul 20 23:55:04 CEST 2005
404 - allow recursive calls to poll_cb, use less locking calls, too.
405 - fix the Gtk2-example in the SYNOPSIS.
406 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
407 from Linux::AIO.
408 (found by compiling on cygwin. Unfortunately, cygwin declares but
409 does not implement pread/pwrite).
410 - only include <sys/syscall.h> on linux.
411
412 0.5 Tue Jul 12 13:03:09 CEST 2005
413 - removed #include <endian.h>, it's not portable, and we don't
414 need it anyway.
415 - link against -lrt, as it might contain goodies such as fdatasync,
416 and often aio_read, which we do not use yet, but it shouldn't hurt.
417
418 0.4 Mon Jul 11 05:28:25 CEST 2005
419 - added IO::AIO::flush, IO::AIO::poll.
420 - make callback argument optional for all calls.
421
422 0.3 Mon Jul 11 01:42:37 CEST 2005
423 - restructured manpage.
424 - added SYNOPSIS with examples for Event, Glib, Tk.
425 - remove explicit context support so I don't have to maintain
426 it for threaded perls (i.e. it should work now :).
427
428 0.2 Sun Jul 10 22:57:12 CEST 2005
429 - return immediately from poll_wait if nreqs==0.
430 - get rid of the request pipe and use faster thread-thread
431 communications for most requests and responses.
432
433 0.1
434 - cloned from Linux::AIO, which is very similar.
435