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Revision: 1.224
Committed: Sun Jan 10 23:44:02 2010 UTC (14 years, 4 months ago) by root
Branch: MAIN
CVS Tags: rel-3_6
Changes since 1.223: +1 -0 lines
Log Message:
3.6

File Contents

# 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: aio_mincore?
10
11 3.6 Mon Jan 11 00:43:39 CET 2010
12 - (libeio) more fixes for the freebsd/apple sendfile - broken by
13 manpage standards, but apparently correct accoridng to actual
14 kernel sources.
15 - add IO::AIO::mmap/munmap support.
16 - add IO::AIO::m(un)lockall support.
17 - clean up manpage.
18
19 3.5 Thu Jan 7 21:25:04 CET 2010
20 - (liebio) fix freebsd sendfile (Vanilla Hsu).
21 - (libeio) also fix darwin sendfile that suffered from a similar bug.
22 - add aio_statvfs as interface to statvfs/fstatvfs.
23 - work around buggy symlink() on cygwin in the testsuite.
24 - wtf. freebsd-8.0 actually passes the testsuite! I knew
25 they could implement fork and semaphores one day! cheers!
26
27 3.4 Sat Jan 2 15:13:04 CET 2010
28 - (libeio) max_poll_time was not properly converted to ticks.
29 - clarify cancel_subs description.
30 - IO::AIO::sendfile did not actually return the return value
31 from the sendfile call.
32 - implement aio_msync, aio_mtouch.
33 - (libeio) tentatively support darwin in sendfile.
34
35 3.31 Thu Nov 12 02:14:29 CET 2009
36 - fix result status documentation of aio_copy, aio_move.
37 - speed up object creation considerably by avoiding
38 hash lookups.
39
40 3.3 Wed Aug 5 13:52:58 CEST 2009
41 - use common::sense.
42 - use common schmorp.h header.
43 - allow integers (file descriptors) in addition to file handles.
44 - take advantage of linux' eventfd (but it seems slower on smp?).
45 - use poll not select on posix platforms.
46
47 3.261 Wed Jul 1 10:11:51 CEST 2009
48 - more 0S X workarounds (patch by Tokuhiro Matsuno).
49
50 3.26 Tue Jun 30 09:33:26 CEST 2009
51 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
52 try to work around this horribly broken OS in a somewhat hackish
53 way. might help other os's too.
54
55 3.25 Sat Jun 27 05:18:26 CEST 2009
56 - added IO::AIO::fadvise and IO::AIO::sendfile.
57 - (libeio) replaced quicksort+insertion sort by a tuned radix
58 sort + insertion sort, resulting in comparable runtime (usually
59 faster) to the old version, but without any ill side effects on
60 degenerated (for quicksort) data.
61 - (libeio) correctly sort dirs by inodes if we have perfect type
62 knowledge and DIRS_FIRST is used.
63 - (libeio) internally the wrong DT_* constants were used, but no
64 known system has differing EIO_DT_*/DT_* values, so not an issue.
65 - removed a (harmless) assert that was left over on the code
66 but should not have been.
67 - use more correct types (change IO length from IV to VAL64,
68 which makes a difference on systems without 64 bit perls).
69
70 3.23 Sat Jun 13 16:57:58 CEST 2009
71 - fix off-by-one bug in aio_readdir that was introduced in the
72 rushed 3.22 release.
73
74 3.22 Sat Jun 13 15:32:40 CEST 2009
75 - speed up readdirx sort algorithm slightly.
76 - bin/treescan was missing from distro tarball.
77
78 3.21 Fri Jun 12 18:45:53 CEST 2009
79 - new options --dirs and --files for treescan.
80 - install bin/treescan by default.
81 - (libeio) aio_readdir can now be cancelled while executing.
82 - fix a printf format string for 64 bit systems (could lead
83 to problems on big endian 64 bit systems).
84 - do not use qsort() but our own algorithm: glibc initialises
85 the whole locale and I/O subsystem inside qsort, causing
86 a stack overflow on 32 bit machines. The new sort uses much less
87 stack and is more than twice as fast in typical situations.
88
89 3.2 Sun Jun 7 20:30:05 CEST 2009
90 - (libeio) pwrite emulation was even more flawed than intended and did
91 not restore the file offset.
92 - add aio_readdirx, which can return inode and filetype and sort
93 the names in various ways.
94 - unfortunately, utime, chmod, chown on an open file that has just
95 been written can easily block, which caused aio_copy to block the
96 process. no more!
97 - no longer rely on dst path in aio_copy when futime is available.
98
99 3.19 Tue Apr 21 22:05:21 CEST 2009
100 - more perl 5.10 workarounds for aio_read and write.
101 - aio_write no longer modifies the sv (if possible).
102 - aio_read now works correctly with magic values.
103
104 3.18 Sun Apr 19 21:17:32 CEST 2009
105 - better diagnostics when some aio_* functions get passed an illegal fh.
106 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
107
108 3.17 Thu Nov 20 08:45:36 CET 2008
109 - (libeio) added aio_sync_file_range (untested).
110 - add aio_busy to @IO::AIO::AIO_REQ.
111
112 3.16 Wed Oct 22 18:28:01 CEST 2008
113 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
114 part to improve portability to perl 5.8 (reported by szymon).
115
116 3.15 Mon Oct 13 00:39:55 CEST 2008
117 - automatic removal of feeders was broken.
118 - (libeio) use a more robust method to detect whether a feeder
119 has added something to the group or not.
120
121 3.1 Thu Oct 2 13:34:40 CEST 2008
122 - pre-deref the passed callback object, for increased speed
123 and decreased memory usage.
124 - call on_next_submit callback even for aio_group - impact unknown,
125 but seems more correct.
126 - $req->cb now returns the original callback.
127 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
128 requiring a thread switch.
129 - (libeio) status code of aio_futime and aio_utime was always passed 0.
130 - do some other ยต-optimisations.
131
132 3.07 Sat Aug 2 16:06:13 CEST 2008
133 - do not include LIBS in autoconf tests.
134
135 3.06 Tue Jul 15 12:41:32 CEST 2008
136 - move preadwritelock definition before it's first reference,
137 to make it compile again on broken platforms (they still exist)
138 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
139
140 3.05 Thu Jun 19 23:23:52 CEST 2008
141 - work around perl overriding readdir etc. with thread-unsafe
142 (sic!) versions.
143
144 3.04 Wed Jun 18 01:35:38 CEST 2008
145 - (libeio) fix eio_mknod, which confused it's arguments.
146 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
147 is stupid.
148 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
149 - (libeio) fix a bug that could potentially cause IO::AIO
150 not to get initialised properly.
151
152 3.03 Thu May 29 05:33:30 CEST 2008
153 - (libeio) correctly call pthread_attr_destroy ().
154 - (libeio) work around broken bsd headers once more.
155 - reduce shared library size again by not including wrappers.
156 - max_outstanding could cause poll to enter a busy-waiting loop.
157 - document the new IO::AIO::poll_cb result value.
158
159 3.02 Mon May 12 02:32:02 CEST 2008
160 - fix a memory leak on aio_readlink.
161 - bring back working fchmod.
162 - nop and busy now set result to 0.
163 - set errno to ENOMEM when allocation fails.
164
165 3.01 Sun May 11 03:07:03 CEST 2008
166 - (libeio) make it compile on systems without readahead or readdir_r.
167 - (libeio) improve configure check for readahead availability.
168 - do not try to link against -lrt.
169 - use a separate configure script for IO::AIO (not the libeio one).
170
171 3.0 Sun May 11 00:57:14 CEST 2008
172 - added bin/treescan to the distribution.
173 - switched to using libeio.
174 - LOTS OF INCOMPATIBLE CHANGES:
175 - remove signal functionality, it is not worth the effort.
176 - max_outstanding no longer returns the previous number of requests.
177 - poll_cb no longer returns number of requests.
178
179 2.62 Sat Apr 26 13:59:33 CEST 2008
180 - port to solaris perls configured for old posix
181 (analysed by Jost Krieger).
182 - keep a reference to the perl filehandle object in aio_close,
183 so it doesn't get closed prematurely, leading to ugly races.
184
185 2.61 Wed Apr 16 18:45:02 CEST 2008
186 - fix treescan output duplication and improve output ordering.
187 also display files given on the commandline.
188 - use a different algorithm for aio_close that is faster
189 and probably has even lower chances of blocking.
190 - do our own stack memory management for threads - linux
191 allocates outrageous amounts of VM (not so bad unless you
192 use mlockall...), which severely limits the number of threads
193 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
194 and 4096 * sizeof (long) (usually this is 16..64k).
195
196 2.6 Sun Mar 30 08:28:11 CEST 2008
197 - added aio_sync.
198 - added aio_pathsync.
199 - fix prototypes of (void) functions.
200
201 2.51 Sat Oct 6 16:04:54 CEST 2007
202 - perlio isn't generally threadsafe, so aio_close could not work reliably.
203 aio_close now tries a safe hack that might not be that asynchronous
204 (see the manpage for details).
205 - discard callback return values as to not grow the stack endlessly
206 when poll_cb handles many requests without returning.
207 - minor code cleanups.
208
209 2.5 Thu Oct 4 14:49:08 CEST 2007
210 - replaced _fd2fh with faster xs code.
211 - aio_close will now try to do "the right thing" and thus might
212 work sensibly for the very first time.
213
214 2.41 Mon Sep 24 21:28:21 CEST 2007
215 - after fork, invest some work to make sure that the poll_fileno
216 stays stable (by dup2'ing the new fd over the old one), to make
217 it easier for programs/libs that don't control their forking
218 behaviour and cannot recreate their watchers.
219
220 2.4 Sun Aug 5 18:44:22 CEST 2007
221 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
222 successfully demonstrated that you can block on futimes...).
223 - allow undef as fileoffset for aio_read/write and use read/write(2)
224 internally (useful for sockets or O_APPEND handles).
225 - allow undef for length in aio_write.
226 - negative dataoffsets work as expected now in aio_read/aio_write.
227 - use NV instead of UV for 32 bit perls and file offsets, as NVs
228 have a larger range then.
229 - shared code between BDB and IO::AIO.
230 - aio_busy was completely broken. now fixed.
231 - readahead emulation now returns something.
232 - correctly set errno to ENOSYS on unimplemented functions
233 (should never happen, though).
234 - large changes to make it partially compile and run on win32,
235 but win32 lacks too much functionality, and perl overrides way
236 too many functions with crashing versions.
237
238 2.33 Tue Jan 23 23:55:41 CET 2007
239 - fix install path (Andreas J. Koenig).
240
241 2.32 Mon Jan 22 16:56:23 CET 2007
242 - added aio_rmtree.
243 - wow, aio_mkdir was missing.
244 - aio_load did return undef on error, not -1.
245 - use prefixexp not prefix in autoconf.pm
246 (suggested by ... rt.cpan.org unreachable).
247 - avoid installing autoconf.pm.
248
249 2.31 Sat Jan 6 03:46:02 CET 2007
250 - added aio_load.
251
252 2.3 Sat Dec 23 05:48:07 CET 2006
253 - fix off-by-one bug in aio_read, causing memory corruption
254 or crashes.
255
256 2.21 Fri Dec 22 05:03:38 CET 2006
257 - minor doc updates.
258 - minor cleanups.
259 - IO::AIO::poll returns request count.
260 - undocumented and unfinished async-signal-reporting.
261
262 2.2 Tue Oct 31 00:31:00 CET 2006
263 - minor doc updates.
264 - added aio_readlink.
265 - properly zero-terminate aio_read buffer.
266 - fix aio_read/write with nonzero dataoffset.
267 - reduced size of aio request structure.
268 - better diagnostics when pathnames etc. are not byte-encoded;
269 do not leak request in that case, either.
270
271 2.1 Sun Oct 29 02:01:57 CET 2006
272 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
273 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
274 - fix a bug in aio_move where it would fail everytime
275 it would have to copy files manually.
276 - doc updates.
277 - start threads only on (very low) demand.
278 - end superfluous threads automatically after 10s idling.
279 - add IO::AIO::max_idle to control this.
280 - some tuning applied to random places.
281 - add aio_mknod.
282
283 2.0 Thu Oct 26 18:27:58 CEST 2006
284 - minor incompatibility: max_outstanding semantics have changed.
285 - major rewrite, consider all functionality EXPERIMENTAL.
286 - aio requests can be cancelled.
287 - callbacks can be (re-)set later.
288 - aio requests can choose between 9 priorities.
289 - add aio_group: aio requests can be grouped
290 into composite requests.
291 - generator interface for groups.
292 - add IO::AIO::poll_some.
293 - major documentation improvements.
294 - very minor bugfixes.
295 - add aio_nop for dummy requests.
296 - add aio_busy mainly for benchmarking and debugging.
297 - use "fast" mutexes on linux.
298 - use dynamic (and larger) buffers instead of
299 putting them onto the stack.
300 - optimise x86 and amd64 a bit.
301 - better error checking when ENOMEM.
302 - hopefully fix mem and dirp leaks on fork.
303 - warn about broken perl malloc.
304 - compiles on cygwin (but pread is broken on cygwin
305 which is not detected by autoconf, so you have to
306 edit autoconf/config.h yourself to enable emulation).
307
308 1.8 Sat Jun 24 22:20:44 CEST 2006
309 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
310
311 1.73 Wed Mar 1 22:49:32 CET 2006
312 - codename "jost"
313 - AIX/Solaris(?) aren't being helpful again, hardcode a value
314 for NAME_MAX and drive with your eyes closed (reported by
315 wcooley@nakedape.cc).
316
317 1.72 Thu Feb 2 00:40:44 CET 2006
318 - another minor bug in aio_scandir, again, the callback was called
319 twice when the directory can't be stat'ed.
320
321 1.71 Mon Dec 26 20:20:03 CET 2005
322 - grr, another minor bug in aio_scandir, this time resulting
323 in a runtime error.
324
325 1.7 Mon Dec 26 19:29:48 CET 2005
326 - aio_scandir errornously called callback twice in some cases.
327 - added AnyEvent example.
328
329 1.61 Wed Sep 7 19:40:42 CEST 2005
330 - no longer include $Config{libs}, as distros include too much
331 garbage in there that is not installed on typical systems
332 (for example, debian links perl against -lgdbm and many more
333 libraries despite perl not needing it, slowing down startup and
334 wasting memory).
335
336 1.6 Tue Aug 30 17:44:44 CEST 2005
337 - added aio_readdir, aio_scandir.
338 - added aio_sendfile, including sendfile emulation when sendfile
339 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
340 support is unavailable on my solaris 8 machine, but preliminary
341 code is there. What's lacking is configury stuff and testing...).
342
343 1.5 Sat Aug 20 02:32:19 CEST 2005
344 - create the aio threads on demand only (good after forking).
345 - somebody nagged about C89 compatibility, so this release should
346 be C89 compatible, but no guarantees for future ones.
347 - abort when the configure script fails.
348
349 1.4 Wed Aug 17 08:07:27 CEST 2005
350 - forgot to recreate the pipe after forking, this could cause
351 deadlocks.
352
353 1.3 Wed Aug 17 07:25:54 CEST 2005
354 - properly propagate exceptions from callbacks, instead of silently
355 eating them.
356 - use a different fork algorithm that avoids recursive callback
357 invocations and reduces fork latency in busy processes.
358 - fix a bug where the buffer scalar in aio_read got assigned the wrong
359 length after reading.
360 - fix a bug where the child would process some outstanding requests
361 from the parent.
362 - make a copy of the callback scalar, to avoid some very uncommon
363 (but valid) usages where the callback scalar changes.
364 - the callback was never freed in aio_read/aio_write.
365 - aio_read/aio_write will now set the readonly flag on the data
366 scalar for better error reporting.
367
368 1.2 Wed Aug 17 01:22:58 CEST 2005
369 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
370 - use SvPVbyte for filenames now. You *need* to encode your strings to
371 the external filename encoding first.
372 - fix the bug where filehandles could leak (again).
373 - clarify freebsd situation: make it work and tell me how, or go away
374 with your underdocumented, broken and outdated OS.
375 - fork'ing should now be officially supported (where linux and
376 posix contradict each other, I followed posix).
377 - only call read() once per poll, not twice (speedup).
378 - new functions: aio_rmdir, aio_symlink.
379 - force callback arguments to be undef or a reference, for better
380 error catching.
381
382 1.1 Sun Aug 7 05:27:23 CEST 2005
383 - added configure script to detect availability of some calls.
384 (imperfect, as we cannot detect things like -lrt due to missing
385 feedback yet).
386 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
387 and readahead via manual reading on platforms lacking those.
388 - ported t/03_errors.t+framework by Brad Fitzpatrick
389 from Linux::AIO.
390 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
391 compile with it enabled. Probably breaks others. Oh well.
392 - try to be more careful with errno on non-threaded perls.
393 - cygwins perl insisted on a matching open mode when morphing
394 the fd to an fh.
395 - convert sv's to "byte" encoding in aio_read/aio_write. Might
396 do that for pathnames, too, in the future, so make sure you
397 properly encode your pathnames.
398
399 1.0 Fri Jul 22 10:43:30 CEST 2005
400 - aio_open did not reliably deliver (open) filehandles.
401 - all aio_*-functions keep a reference to the filehandle so
402 it doesn't go away while the aio requests is working on it.
403 - disable warnings in AIO.pm.
404
405 0.9 Wed Jul 20 23:55:04 CEST 2005
406 - allow recursive calls to poll_cb, use less locking calls, too.
407 - fix the Gtk2-example in the SYNOPSIS.
408 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
409 from Linux::AIO.
410 (found by compiling on cygwin. Unfortunately, cygwin declares but
411 does not implement pread/pwrite).
412 - only include <sys/syscall.h> on linux.
413
414 0.5 Tue Jul 12 13:03:09 CEST 2005
415 - removed #include <endian.h>, it's not portable, and we don't
416 need it anyway.
417 - link against -lrt, as it might contain goodies such as fdatasync,
418 and often aio_read, which we do not use yet, but it shouldn't hurt.
419
420 0.4 Mon Jul 11 05:28:25 CEST 2005
421 - added IO::AIO::flush, IO::AIO::poll.
422 - make callback argument optional for all calls.
423
424 0.3 Mon Jul 11 01:42:37 CEST 2005
425 - restructured manpage.
426 - added SYNOPSIS with examples for Event, Glib, Tk.
427 - remove explicit context support so I don't have to maintain
428 it for threaded perls (i.e. it should work now :).
429
430 0.2 Sun Jul 10 22:57:12 CEST 2005
431 - return immediately from poll_wait if nreqs==0.
432 - get rid of the request pipe and use faster thread-thread
433 communications for most requests and responses.
434
435 0.1
436 - cloned from Linux::AIO, which is very similar.
437