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Revision: 1.218
Committed: Fri Jan 8 09:29:55 2010 UTC (14 years, 4 months ago) by root
Branch: MAIN
Changes since 1.217: +4 -0 lines
Log Message:
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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 - it should now
12 be correct according to the manpage, but it seems to be broken by
13 design, failing to account some bytes sometimes.
14
15 3.5 Thu Jan 7 21:25:04 CET 2010
16 - (liebio) fix freebsd sendfile (Vanilla Hsu).
17 - (libeio) also fix darwin sendfile that suffered from a similar bug.
18 - add aio_statvfs as interface to statvfs/fstatvfs.
19 - work around buggy symlink() on cygwin in the testsuite.
20 - wtf. freebsd-8.0 actually passes the testsuite! I knew
21 they could implement fork and semaphores one day! cheers!
22
23 3.4 Sat Jan 2 15:13:04 CET 2010
24 - (libeio) max_poll_time was not properly converted to ticks.
25 - clarify cancel_subs description.
26 - IO::AIO::sendfile did not actually return the return value
27 from the sendfile call.
28 - implement aio_msync, aio_mtouch.
29 - (libeio) tentatively support darwin in sendfile.
30
31 3.31 Thu Nov 12 02:14:29 CET 2009
32 - fix result status documentation of aio_copy, aio_move.
33 - speed up object creation considerably by avoiding
34 hash lookups.
35
36 3.3 Wed Aug 5 13:52:58 CEST 2009
37 - use common::sense.
38 - use common schmorp.h header.
39 - allow integers (file descriptors) in addition to file handles.
40 - take advantage of linux' eventfd (but it seems slower on smp?).
41 - use poll not select on posix platforms.
42
43 3.261 Wed Jul 1 10:11:51 CEST 2009
44 - more 0S X workarounds (patch by Tokuhiro Matsuno).
45
46 3.26 Tue Jun 30 09:33:26 CEST 2009
47 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
48 try to work around this horribly broken OS in a somewhat hackish
49 way. might help other os's too.
50
51 3.25 Sat Jun 27 05:18:26 CEST 2009
52 - added IO::AIO::fadvise and IO::AIO::sendfile.
53 - (libeio) replaced quicksort+insertion sort by a tuned radix
54 sort + insertion sort, resulting in comparable runtime (usually
55 faster) to the old version, but without any ill side effects on
56 degenerated (for quicksort) data.
57 - (libeio) correctly sort dirs by inodes if we have perfect type
58 knowledge and DIRS_FIRST is used.
59 - (libeio) internally the wrong DT_* constants were used, but no
60 known system has differing EIO_DT_*/DT_* values, so not an issue.
61 - removed a (harmless) assert that was left over on the code
62 but should not have been.
63 - use more correct types (change IO length from IV to VAL64,
64 which makes a difference on systems without 64 bit perls).
65
66 3.23 Sat Jun 13 16:57:58 CEST 2009
67 - fix off-by-one bug in aio_readdir that was introduced in the
68 rushed 3.22 release.
69
70 3.22 Sat Jun 13 15:32:40 CEST 2009
71 - speed up readdirx sort algorithm slightly.
72 - bin/treescan was missing from distro tarball.
73
74 3.21 Fri Jun 12 18:45:53 CEST 2009
75 - new options --dirs and --files for treescan.
76 - install bin/treescan by default.
77 - (libeio) aio_readdir can now be cancelled while executing.
78 - fix a printf format string for 64 bit systems (could lead
79 to problems on big endian 64 bit systems).
80 - do not use qsort() but our own algorithm: glibc initialises
81 the whole locale and I/O subsystem inside qsort, causing
82 a stack overflow on 32 bit machines. The new sort uses much less
83 stack and is more than twice as fast in typical situations.
84
85 3.2 Sun Jun 7 20:30:05 CEST 2009
86 - (libeio) pwrite emulation was even more flawed than intended and did
87 not restore the file offset.
88 - add aio_readdirx, which can return inode and filetype and sort
89 the names in various ways.
90 - unfortunately, utime, chmod, chown on an open file that has just
91 been written can easily block, which caused aio_copy to block the
92 process. no more!
93 - no longer rely on dst path in aio_copy when futime is available.
94
95 3.19 Tue Apr 21 22:05:21 CEST 2009
96 - more perl 5.10 workarounds for aio_read and write.
97 - aio_write no longer modifies the sv (if possible).
98 - aio_read now works correctly with magic values.
99
100 3.18 Sun Apr 19 21:17:32 CEST 2009
101 - better diagnostics when some aio_* functions get passed an illegal fh.
102 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
103
104 3.17 Thu Nov 20 08:45:36 CET 2008
105 - (libeio) added aio_sync_file_range (untested).
106 - add aio_busy to @IO::AIO::AIO_REQ.
107
108 3.16 Wed Oct 22 18:28:01 CEST 2008
109 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
110 part to improve portability to perl 5.8 (reported by szymon).
111
112 3.15 Mon Oct 13 00:39:55 CEST 2008
113 - automatic removal of feeders was broken.
114 - (libeio) use a more robust method to detect whether a feeder
115 has added something to the group or not.
116
117 3.1 Thu Oct 2 13:34:40 CEST 2008
118 - pre-deref the passed callback object, for increased speed
119 and decreased memory usage.
120 - call on_next_submit callback even for aio_group - impact unknown,
121 but seems more correct.
122 - $req->cb now returns the original callback.
123 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
124 requiring a thread switch.
125 - (libeio) status code of aio_futime and aio_utime was always passed 0.
126 - do some other ยต-optimisations.
127
128 3.07 Sat Aug 2 16:06:13 CEST 2008
129 - do not include LIBS in autoconf tests.
130
131 3.06 Tue Jul 15 12:41:32 CEST 2008
132 - move preadwritelock definition before it's first reference,
133 to make it compile again on broken platforms (they still exist)
134 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
135
136 3.05 Thu Jun 19 23:23:52 CEST 2008
137 - work around perl overriding readdir etc. with thread-unsafe
138 (sic!) versions.
139
140 3.04 Wed Jun 18 01:35:38 CEST 2008
141 - (libeio) fix eio_mknod, which confused it's arguments.
142 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
143 is stupid.
144 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
145 - (libeio) fix a bug that could potentially cause IO::AIO
146 not to get initialised properly.
147
148 3.03 Thu May 29 05:33:30 CEST 2008
149 - (libeio) correctly call pthread_attr_destroy ().
150 - (libeio) work around broken bsd headers once more.
151 - reduce shared library size again by not including wrappers.
152 - max_outstanding could cause poll to enter a busy-waiting loop.
153 - document the new IO::AIO::poll_cb result value.
154
155 3.02 Mon May 12 02:32:02 CEST 2008
156 - fix a memory leak on aio_readlink.
157 - bring back working fchmod.
158 - nop and busy now set result to 0.
159 - set errno to ENOMEM when allocation fails.
160
161 3.01 Sun May 11 03:07:03 CEST 2008
162 - (libeio) make it compile on systems without readahead or readdir_r.
163 - (libeio) improve configure check for readahead availability.
164 - do not try to link against -lrt.
165 - use a separate configure script for IO::AIO (not the libeio one).
166
167 3.0 Sun May 11 00:57:14 CEST 2008
168 - added bin/treescan to the distribution.
169 - switched to using libeio.
170 - LOTS OF INCOMPATIBLE CHANGES:
171 - remove signal functionality, it is not worth the effort.
172 - max_outstanding no longer returns the previous number of requests.
173 - poll_cb no longer returns number of requests.
174
175 2.62 Sat Apr 26 13:59:33 CEST 2008
176 - port to solaris perls configured for old posix
177 (analysed by Jost Krieger).
178 - keep a reference to the perl filehandle object in aio_close,
179 so it doesn't get closed prematurely, leading to ugly races.
180
181 2.61 Wed Apr 16 18:45:02 CEST 2008
182 - fix treescan output duplication and improve output ordering.
183 also display files given on the commandline.
184 - use a different algorithm for aio_close that is faster
185 and probably has even lower chances of blocking.
186 - do our own stack memory management for threads - linux
187 allocates outrageous amounts of VM (not so bad unless you
188 use mlockall...), which severely limits the number of threads
189 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
190 and 4096 * sizeof (long) (usually this is 16..64k).
191
192 2.6 Sun Mar 30 08:28:11 CEST 2008
193 - added aio_sync.
194 - added aio_pathsync.
195 - fix prototypes of (void) functions.
196
197 2.51 Sat Oct 6 16:04:54 CEST 2007
198 - perlio isn't generally threadsafe, so aio_close could not work reliably.
199 aio_close now tries a safe hack that might not be that asynchronous
200 (see the manpage for details).
201 - discard callback return values as to not grow the stack endlessly
202 when poll_cb handles many requests without returning.
203 - minor code cleanups.
204
205 2.5 Thu Oct 4 14:49:08 CEST 2007
206 - replaced _fd2fh with faster xs code.
207 - aio_close will now try to do "the right thing" and thus might
208 work sensibly for the very first time.
209
210 2.41 Mon Sep 24 21:28:21 CEST 2007
211 - after fork, invest some work to make sure that the poll_fileno
212 stays stable (by dup2'ing the new fd over the old one), to make
213 it easier for programs/libs that don't control their forking
214 behaviour and cannot recreate their watchers.
215
216 2.4 Sun Aug 5 18:44:22 CEST 2007
217 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
218 successfully demonstrated that you can block on futimes...).
219 - allow undef as fileoffset for aio_read/write and use read/write(2)
220 internally (useful for sockets or O_APPEND handles).
221 - allow undef for length in aio_write.
222 - negative dataoffsets work as expected now in aio_read/aio_write.
223 - use NV instead of UV for 32 bit perls and file offsets, as NVs
224 have a larger range then.
225 - shared code between BDB and IO::AIO.
226 - aio_busy was completely broken. now fixed.
227 - readahead emulation now returns something.
228 - correctly set errno to ENOSYS on unimplemented functions
229 (should never happen, though).
230 - large changes to make it partially compile and run on win32,
231 but win32 lacks too much functionality, and perl overrides way
232 too many functions with crashing versions.
233
234 2.33 Tue Jan 23 23:55:41 CET 2007
235 - fix install path (Andreas J. Koenig).
236
237 2.32 Mon Jan 22 16:56:23 CET 2007
238 - added aio_rmtree.
239 - wow, aio_mkdir was missing.
240 - aio_load did return undef on error, not -1.
241 - use prefixexp not prefix in autoconf.pm
242 (suggested by ... rt.cpan.org unreachable).
243 - avoid installing autoconf.pm.
244
245 2.31 Sat Jan 6 03:46:02 CET 2007
246 - added aio_load.
247
248 2.3 Sat Dec 23 05:48:07 CET 2006
249 - fix off-by-one bug in aio_read, causing memory corruption
250 or crashes.
251
252 2.21 Fri Dec 22 05:03:38 CET 2006
253 - minor doc updates.
254 - minor cleanups.
255 - IO::AIO::poll returns request count.
256 - undocumented and unfinished async-signal-reporting.
257
258 2.2 Tue Oct 31 00:31:00 CET 2006
259 - minor doc updates.
260 - added aio_readlink.
261 - properly zero-terminate aio_read buffer.
262 - fix aio_read/write with nonzero dataoffset.
263 - reduced size of aio request structure.
264 - better diagnostics when pathnames etc. are not byte-encoded;
265 do not leak request in that case, either.
266
267 2.1 Sun Oct 29 02:01:57 CET 2006
268 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
269 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
270 - fix a bug in aio_move where it would fail everytime
271 it would have to copy files manually.
272 - doc updates.
273 - start threads only on (very low) demand.
274 - end superfluous threads automatically after 10s idling.
275 - add IO::AIO::max_idle to control this.
276 - some tuning applied to random places.
277 - add aio_mknod.
278
279 2.0 Thu Oct 26 18:27:58 CEST 2006
280 - minor incompatibility: max_outstanding semantics have changed.
281 - major rewrite, consider all functionality EXPERIMENTAL.
282 - aio requests can be cancelled.
283 - callbacks can be (re-)set later.
284 - aio requests can choose between 9 priorities.
285 - add aio_group: aio requests can be grouped
286 into composite requests.
287 - generator interface for groups.
288 - add IO::AIO::poll_some.
289 - major documentation improvements.
290 - very minor bugfixes.
291 - add aio_nop for dummy requests.
292 - add aio_busy mainly for benchmarking and debugging.
293 - use "fast" mutexes on linux.
294 - use dynamic (and larger) buffers instead of
295 putting them onto the stack.
296 - optimise x86 and amd64 a bit.
297 - better error checking when ENOMEM.
298 - hopefully fix mem and dirp leaks on fork.
299 - warn about broken perl malloc.
300 - compiles on cygwin (but pread is broken on cygwin
301 which is not detected by autoconf, so you have to
302 edit autoconf/config.h yourself to enable emulation).
303
304 1.8 Sat Jun 24 22:20:44 CEST 2006
305 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
306
307 1.73 Wed Mar 1 22:49:32 CET 2006
308 - codename "jost"
309 - AIX/Solaris(?) aren't being helpful again, hardcode a value
310 for NAME_MAX and drive with your eyes closed (reported by
311 wcooley@nakedape.cc).
312
313 1.72 Thu Feb 2 00:40:44 CET 2006
314 - another minor bug in aio_scandir, again, the callback was called
315 twice when the directory can't be stat'ed.
316
317 1.71 Mon Dec 26 20:20:03 CET 2005
318 - grr, another minor bug in aio_scandir, this time resulting
319 in a runtime error.
320
321 1.7 Mon Dec 26 19:29:48 CET 2005
322 - aio_scandir errornously called callback twice in some cases.
323 - added AnyEvent example.
324
325 1.61 Wed Sep 7 19:40:42 CEST 2005
326 - no longer include $Config{libs}, as distros include too much
327 garbage in there that is not installed on typical systems
328 (for example, debian links perl against -lgdbm and many more
329 libraries despite perl not needing it, slowing down startup and
330 wasting memory).
331
332 1.6 Tue Aug 30 17:44:44 CEST 2005
333 - added aio_readdir, aio_scandir.
334 - added aio_sendfile, including sendfile emulation when sendfile
335 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
336 support is unavailable on my solaris 8 machine, but preliminary
337 code is there. What's lacking is configury stuff and testing...).
338
339 1.5 Sat Aug 20 02:32:19 CEST 2005
340 - create the aio threads on demand only (good after forking).
341 - somebody nagged about C89 compatibility, so this release should
342 be C89 compatible, but no guarantees for future ones.
343 - abort when the configure script fails.
344
345 1.4 Wed Aug 17 08:07:27 CEST 2005
346 - forgot to recreate the pipe after forking, this could cause
347 deadlocks.
348
349 1.3 Wed Aug 17 07:25:54 CEST 2005
350 - properly propagate exceptions from callbacks, instead of silently
351 eating them.
352 - use a different fork algorithm that avoids recursive callback
353 invocations and reduces fork latency in busy processes.
354 - fix a bug where the buffer scalar in aio_read got assigned the wrong
355 length after reading.
356 - fix a bug where the child would process some outstanding requests
357 from the parent.
358 - make a copy of the callback scalar, to avoid some very uncommon
359 (but valid) usages where the callback scalar changes.
360 - the callback was never freed in aio_read/aio_write.
361 - aio_read/aio_write will now set the readonly flag on the data
362 scalar for better error reporting.
363
364 1.2 Wed Aug 17 01:22:58 CEST 2005
365 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
366 - use SvPVbyte for filenames now. You *need* to encode your strings to
367 the external filename encoding first.
368 - fix the bug where filehandles could leak (again).
369 - clarify freebsd situation: make it work and tell me how, or go away
370 with your underdocumented, broken and outdated OS.
371 - fork'ing should now be officially supported (where linux and
372 posix contradict each other, I followed posix).
373 - only call read() once per poll, not twice (speedup).
374 - new functions: aio_rmdir, aio_symlink.
375 - force callback arguments to be undef or a reference, for better
376 error catching.
377
378 1.1 Sun Aug 7 05:27:23 CEST 2005
379 - added configure script to detect availability of some calls.
380 (imperfect, as we cannot detect things like -lrt due to missing
381 feedback yet).
382 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
383 and readahead via manual reading on platforms lacking those.
384 - ported t/03_errors.t+framework by Brad Fitzpatrick
385 from Linux::AIO.
386 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
387 compile with it enabled. Probably breaks others. Oh well.
388 - try to be more careful with errno on non-threaded perls.
389 - cygwins perl insisted on a matching open mode when morphing
390 the fd to an fh.
391 - convert sv's to "byte" encoding in aio_read/aio_write. Might
392 do that for pathnames, too, in the future, so make sure you
393 properly encode your pathnames.
394
395 1.0 Fri Jul 22 10:43:30 CEST 2005
396 - aio_open did not reliably deliver (open) filehandles.
397 - all aio_*-functions keep a reference to the filehandle so
398 it doesn't go away while the aio requests is working on it.
399 - disable warnings in AIO.pm.
400
401 0.9 Wed Jul 20 23:55:04 CEST 2005
402 - allow recursive calls to poll_cb, use less locking calls, too.
403 - fix the Gtk2-example in the SYNOPSIS.
404 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
405 from Linux::AIO.
406 (found by compiling on cygwin. Unfortunately, cygwin declares but
407 does not implement pread/pwrite).
408 - only include <sys/syscall.h> on linux.
409
410 0.5 Tue Jul 12 13:03:09 CEST 2005
411 - removed #include <endian.h>, it's not portable, and we don't
412 need it anyway.
413 - link against -lrt, as it might contain goodies such as fdatasync,
414 and often aio_read, which we do not use yet, but it shouldn't hurt.
415
416 0.4 Mon Jul 11 05:28:25 CEST 2005
417 - added IO::AIO::flush, IO::AIO::poll.
418 - make callback argument optional for all calls.
419
420 0.3 Mon Jul 11 01:42:37 CEST 2005
421 - restructured manpage.
422 - added SYNOPSIS with examples for Event, Glib, Tk.
423 - remove explicit context support so I don't have to maintain
424 it for threaded perls (i.e. it should work now :).
425
426 0.2 Sun Jul 10 22:57:12 CEST 2005
427 - return immediately from poll_wait if nreqs==0.
428 - get rid of the request pipe and use faster thread-thread
429 communications for most requests and responses.
430
431 0.1
432 - cloned from Linux::AIO, which is very similar.
433