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Revision: 1.232
Committed: Wed Aug 4 16:06:54 2010 UTC (13 years, 10 months ago) by root
Branch: MAIN
Changes since 1.231: +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: aio_mincore?
10 TODO: posix_madvise.
11 TODO: add? also linux-specific stuff?
12 O_EXEC
13 O_SEARCH
14 O_CLOEXEC
15 O_DIRECTORY
16 O_DSYNC
17 O_NOCTTY
18 O_NOFOLLOW
19 O_NONBLOCK
20 O_RSYNC
21 O_SYNC
22 O_TTY_INIT
23 TODO: document/test madvise
24
25 - do not leak memory in IO::AIO::mmap when the scalar already
26 had string-data.
27 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-documented
28 them.
29 - cache the result IV, for a minor speedup in the common case.
30 - croak when an mmapped-scalar changes location, to detect
31 user-errors better.
32
33 3.65 Wed Mar 31 02:45:05 CEST 2010
34 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
35 cut off long pathnames in aio_readlink (based on patch by
36 Rasmus Andersson).
37 - a double fork partially killed the event pipe (great testcase
38 by dormando). affects IO::AIO, BDB and Async::Interrupt.
39 - suck steve's dick and rename our symbols to avoid colliding
40 with nonstandard identifier spam on the broken os x pseudo-os.
41 affects IO::AIO and BDB.
42
43 3.6 Mon Jan 11 00:43:39 CET 2010
44 - (libeio) more fixes for the freebsd/apple sendfile - broken by
45 manpage standards, but apparently correct accoridng to actual
46 kernel sources.
47 - add IO::AIO::mmap/munmap support.
48 - add IO::AIO::m(un)lockall support.
49 - clean up manpage.
50
51 3.5 Thu Jan 7 21:25:04 CET 2010
52 - (liebio) fix freebsd sendfile (Vanilla Hsu).
53 - (libeio) also fix darwin sendfile that suffered from a similar bug.
54 - add aio_statvfs as interface to statvfs/fstatvfs.
55 - work around buggy symlink() on cygwin in the testsuite.
56 - wtf. freebsd-8.0 actually passes the testsuite! I knew
57 they could implement fork and semaphores one day! cheers!
58
59 3.4 Sat Jan 2 15:13:04 CET 2010
60 - (libeio) max_poll_time was not properly converted to ticks.
61 - clarify cancel_subs description.
62 - IO::AIO::sendfile did not actually return the return value
63 from the sendfile call.
64 - implement aio_msync, aio_mtouch.
65 - (libeio) tentatively support darwin in sendfile.
66
67 3.31 Thu Nov 12 02:14:29 CET 2009
68 - fix result status documentation of aio_copy, aio_move.
69 - speed up object creation considerably by avoiding
70 hash lookups.
71
72 3.3 Wed Aug 5 13:52:58 CEST 2009
73 - use common::sense.
74 - use common schmorp.h header.
75 - allow integers (file descriptors) in addition to file handles.
76 - take advantage of linux' eventfd (but it seems slower on smp?).
77 - use poll not select on posix platforms.
78
79 3.261 Wed Jul 1 10:11:51 CEST 2009
80 - more 0S X workarounds (patch by Tokuhiro Matsuno).
81
82 3.26 Tue Jun 30 09:33:26 CEST 2009
83 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
84 try to work around this horribly broken OS in a somewhat hackish
85 way. might help other os's too.
86
87 3.25 Sat Jun 27 05:18:26 CEST 2009
88 - added IO::AIO::fadvise and IO::AIO::sendfile.
89 - (libeio) replaced quicksort+insertion sort by a tuned radix
90 sort + insertion sort, resulting in comparable runtime (usually
91 faster) to the old version, but without any ill side effects on
92 degenerated (for quicksort) data.
93 - (libeio) correctly sort dirs by inodes if we have perfect type
94 knowledge and DIRS_FIRST is used.
95 - (libeio) internally the wrong DT_* constants were used, but no
96 known system has differing EIO_DT_*/DT_* values, so not an issue.
97 - removed a (harmless) assert that was left over on the code
98 but should not have been.
99 - use more correct types (change IO length from IV to VAL64,
100 which makes a difference on systems without 64 bit perls).
101
102 3.23 Sat Jun 13 16:57:58 CEST 2009
103 - fix off-by-one bug in aio_readdir that was introduced in the
104 rushed 3.22 release.
105
106 3.22 Sat Jun 13 15:32:40 CEST 2009
107 - speed up readdirx sort algorithm slightly.
108 - bin/treescan was missing from distro tarball.
109
110 3.21 Fri Jun 12 18:45:53 CEST 2009
111 - new options --dirs and --files for treescan.
112 - install bin/treescan by default.
113 - (libeio) aio_readdir can now be cancelled while executing.
114 - fix a printf format string for 64 bit systems (could lead
115 to problems on big endian 64 bit systems).
116 - do not use qsort() but our own algorithm: glibc initialises
117 the whole locale and I/O subsystem inside qsort, causing
118 a stack overflow on 32 bit machines. The new sort uses much less
119 stack and is more than twice as fast in typical situations.
120
121 3.2 Sun Jun 7 20:30:05 CEST 2009
122 - (libeio) pwrite emulation was even more flawed than intended and did
123 not restore the file offset.
124 - add aio_readdirx, which can return inode and filetype and sort
125 the names in various ways.
126 - unfortunately, utime, chmod, chown on an open file that has just
127 been written can easily block, which caused aio_copy to block the
128 process. no more!
129 - no longer rely on dst path in aio_copy when futime is available.
130
131 3.19 Tue Apr 21 22:05:21 CEST 2009
132 - more perl 5.10 workarounds for aio_read and write.
133 - aio_write no longer modifies the sv (if possible).
134 - aio_read now works correctly with magic values.
135
136 3.18 Sun Apr 19 21:17:32 CEST 2009
137 - better diagnostics when some aio_* functions get passed an illegal fh.
138 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
139
140 3.17 Thu Nov 20 08:45:36 CET 2008
141 - (libeio) added aio_sync_file_range (untested).
142 - add aio_busy to @IO::AIO::AIO_REQ.
143
144 3.16 Wed Oct 22 18:28:01 CEST 2008
145 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
146 part to improve portability to perl 5.8 (reported by szymon).
147
148 3.15 Mon Oct 13 00:39:55 CEST 2008
149 - automatic removal of feeders was broken.
150 - (libeio) use a more robust method to detect whether a feeder
151 has added something to the group or not.
152
153 3.1 Thu Oct 2 13:34:40 CEST 2008
154 - pre-deref the passed callback object, for increased speed
155 and decreased memory usage.
156 - call on_next_submit callback even for aio_group - impact unknown,
157 but seems more correct.
158 - $req->cb now returns the original callback.
159 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
160 requiring a thread switch.
161 - (libeio) status code of aio_futime and aio_utime was always passed 0.
162 - do some other ยต-optimisations.
163
164 3.07 Sat Aug 2 16:06:13 CEST 2008
165 - do not include LIBS in autoconf tests.
166
167 3.06 Tue Jul 15 12:41:32 CEST 2008
168 - move preadwritelock definition before it's first reference,
169 to make it compile again on broken platforms (they still exist)
170 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
171
172 3.05 Thu Jun 19 23:23:52 CEST 2008
173 - work around perl overriding readdir etc. with thread-unsafe
174 (sic!) versions.
175
176 3.04 Wed Jun 18 01:35:38 CEST 2008
177 - (libeio) fix eio_mknod, which confused it's arguments.
178 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
179 is stupid.
180 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
181 - (libeio) fix a bug that could potentially cause IO::AIO
182 not to get initialised properly.
183
184 3.03 Thu May 29 05:33:30 CEST 2008
185 - (libeio) correctly call pthread_attr_destroy ().
186 - (libeio) work around broken bsd headers once more.
187 - reduce shared library size again by not including wrappers.
188 - max_outstanding could cause poll to enter a busy-waiting loop.
189 - document the new IO::AIO::poll_cb result value.
190
191 3.02 Mon May 12 02:32:02 CEST 2008
192 - fix a memory leak on aio_readlink.
193 - bring back working fchmod.
194 - nop and busy now set result to 0.
195 - set errno to ENOMEM when allocation fails.
196
197 3.01 Sun May 11 03:07:03 CEST 2008
198 - (libeio) make it compile on systems without readahead or readdir_r.
199 - (libeio) improve configure check for readahead availability.
200 - do not try to link against -lrt.
201 - use a separate configure script for IO::AIO (not the libeio one).
202
203 3.0 Sun May 11 00:57:14 CEST 2008
204 - added bin/treescan to the distribution.
205 - switched to using libeio.
206 - LOTS OF INCOMPATIBLE CHANGES:
207 - remove signal functionality, it is not worth the effort.
208 - max_outstanding no longer returns the previous number of requests.
209 - poll_cb no longer returns number of requests.
210
211 2.62 Sat Apr 26 13:59:33 CEST 2008
212 - port to solaris perls configured for old posix
213 (analysed by Jost Krieger).
214 - keep a reference to the perl filehandle object in aio_close,
215 so it doesn't get closed prematurely, leading to ugly races.
216
217 2.61 Wed Apr 16 18:45:02 CEST 2008
218 - fix treescan output duplication and improve output ordering.
219 also display files given on the commandline.
220 - use a different algorithm for aio_close that is faster
221 and probably has even lower chances of blocking.
222 - do our own stack memory management for threads - linux
223 allocates outrageous amounts of VM (not so bad unless you
224 use mlockall...), which severely limits the number of threads
225 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
226 and 4096 * sizeof (long) (usually this is 16..64k).
227
228 2.6 Sun Mar 30 08:28:11 CEST 2008
229 - added aio_sync.
230 - added aio_pathsync.
231 - fix prototypes of (void) functions.
232
233 2.51 Sat Oct 6 16:04:54 CEST 2007
234 - perlio isn't generally threadsafe, so aio_close could not work reliably.
235 aio_close now tries a safe hack that might not be that asynchronous
236 (see the manpage for details).
237 - discard callback return values as to not grow the stack endlessly
238 when poll_cb handles many requests without returning.
239 - minor code cleanups.
240
241 2.5 Thu Oct 4 14:49:08 CEST 2007
242 - replaced _fd2fh with faster xs code.
243 - aio_close will now try to do "the right thing" and thus might
244 work sensibly for the very first time.
245
246 2.41 Mon Sep 24 21:28:21 CEST 2007
247 - after fork, invest some work to make sure that the poll_fileno
248 stays stable (by dup2'ing the new fd over the old one), to make
249 it easier for programs/libs that don't control their forking
250 behaviour and cannot recreate their watchers.
251
252 2.4 Sun Aug 5 18:44:22 CEST 2007
253 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
254 successfully demonstrated that you can block on futimes...).
255 - allow undef as fileoffset for aio_read/write and use read/write(2)
256 internally (useful for sockets or O_APPEND handles).
257 - allow undef for length in aio_write.
258 - negative dataoffsets work as expected now in aio_read/aio_write.
259 - use NV instead of UV for 32 bit perls and file offsets, as NVs
260 have a larger range then.
261 - shared code between BDB and IO::AIO.
262 - aio_busy was completely broken. now fixed.
263 - readahead emulation now returns something.
264 - correctly set errno to ENOSYS on unimplemented functions
265 (should never happen, though).
266 - large changes to make it partially compile and run on win32,
267 but win32 lacks too much functionality, and perl overrides way
268 too many functions with crashing versions.
269
270 2.33 Tue Jan 23 23:55:41 CET 2007
271 - fix install path (Andreas J. Koenig).
272
273 2.32 Mon Jan 22 16:56:23 CET 2007
274 - added aio_rmtree.
275 - wow, aio_mkdir was missing.
276 - aio_load did return undef on error, not -1.
277 - use prefixexp not prefix in autoconf.pm
278 (suggested by ... rt.cpan.org unreachable).
279 - avoid installing autoconf.pm.
280
281 2.31 Sat Jan 6 03:46:02 CET 2007
282 - added aio_load.
283
284 2.3 Sat Dec 23 05:48:07 CET 2006
285 - fix off-by-one bug in aio_read, causing memory corruption
286 or crashes.
287
288 2.21 Fri Dec 22 05:03:38 CET 2006
289 - minor doc updates.
290 - minor cleanups.
291 - IO::AIO::poll returns request count.
292 - undocumented and unfinished async-signal-reporting.
293
294 2.2 Tue Oct 31 00:31:00 CET 2006
295 - minor doc updates.
296 - added aio_readlink.
297 - properly zero-terminate aio_read buffer.
298 - fix aio_read/write with nonzero dataoffset.
299 - reduced size of aio request structure.
300 - better diagnostics when pathnames etc. are not byte-encoded;
301 do not leak request in that case, either.
302
303 2.1 Sun Oct 29 02:01:57 CET 2006
304 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
305 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
306 - fix a bug in aio_move where it would fail everytime
307 it would have to copy files manually.
308 - doc updates.
309 - start threads only on (very low) demand.
310 - end superfluous threads automatically after 10s idling.
311 - add IO::AIO::max_idle to control this.
312 - some tuning applied to random places.
313 - add aio_mknod.
314
315 2.0 Thu Oct 26 18:27:58 CEST 2006
316 - minor incompatibility: max_outstanding semantics have changed.
317 - major rewrite, consider all functionality EXPERIMENTAL.
318 - aio requests can be cancelled.
319 - callbacks can be (re-)set later.
320 - aio requests can choose between 9 priorities.
321 - add aio_group: aio requests can be grouped
322 into composite requests.
323 - generator interface for groups.
324 - add IO::AIO::poll_some.
325 - major documentation improvements.
326 - very minor bugfixes.
327 - add aio_nop for dummy requests.
328 - add aio_busy mainly for benchmarking and debugging.
329 - use "fast" mutexes on linux.
330 - use dynamic (and larger) buffers instead of
331 putting them onto the stack.
332 - optimise x86 and amd64 a bit.
333 - better error checking when ENOMEM.
334 - hopefully fix mem and dirp leaks on fork.
335 - warn about broken perl malloc.
336 - compiles on cygwin (but pread is broken on cygwin
337 which is not detected by autoconf, so you have to
338 edit autoconf/config.h yourself to enable emulation).
339
340 1.8 Sat Jun 24 22:20:44 CEST 2006
341 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
342
343 1.73 Wed Mar 1 22:49:32 CET 2006
344 - codename "jost"
345 - AIX/Solaris(?) aren't being helpful again, hardcode a value
346 for NAME_MAX and drive with your eyes closed (reported by
347 wcooley@nakedape.cc).
348
349 1.72 Thu Feb 2 00:40:44 CET 2006
350 - another minor bug in aio_scandir, again, the callback was called
351 twice when the directory can't be stat'ed.
352
353 1.71 Mon Dec 26 20:20:03 CET 2005
354 - grr, another minor bug in aio_scandir, this time resulting
355 in a runtime error.
356
357 1.7 Mon Dec 26 19:29:48 CET 2005
358 - aio_scandir errornously called callback twice in some cases.
359 - added AnyEvent example.
360
361 1.61 Wed Sep 7 19:40:42 CEST 2005
362 - no longer include $Config{libs}, as distros include too much
363 garbage in there that is not installed on typical systems
364 (for example, debian links perl against -lgdbm and many more
365 libraries despite perl not needing it, slowing down startup and
366 wasting memory).
367
368 1.6 Tue Aug 30 17:44:44 CEST 2005
369 - added aio_readdir, aio_scandir.
370 - added aio_sendfile, including sendfile emulation when sendfile
371 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
372 support is unavailable on my solaris 8 machine, but preliminary
373 code is there. What's lacking is configury stuff and testing...).
374
375 1.5 Sat Aug 20 02:32:19 CEST 2005
376 - create the aio threads on demand only (good after forking).
377 - somebody nagged about C89 compatibility, so this release should
378 be C89 compatible, but no guarantees for future ones.
379 - abort when the configure script fails.
380
381 1.4 Wed Aug 17 08:07:27 CEST 2005
382 - forgot to recreate the pipe after forking, this could cause
383 deadlocks.
384
385 1.3 Wed Aug 17 07:25:54 CEST 2005
386 - properly propagate exceptions from callbacks, instead of silently
387 eating them.
388 - use a different fork algorithm that avoids recursive callback
389 invocations and reduces fork latency in busy processes.
390 - fix a bug where the buffer scalar in aio_read got assigned the wrong
391 length after reading.
392 - fix a bug where the child would process some outstanding requests
393 from the parent.
394 - make a copy of the callback scalar, to avoid some very uncommon
395 (but valid) usages where the callback scalar changes.
396 - the callback was never freed in aio_read/aio_write.
397 - aio_read/aio_write will now set the readonly flag on the data
398 scalar for better error reporting.
399
400 1.2 Wed Aug 17 01:22:58 CEST 2005
401 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
402 - use SvPVbyte for filenames now. You *need* to encode your strings to
403 the external filename encoding first.
404 - fix the bug where filehandles could leak (again).
405 - clarify freebsd situation: make it work and tell me how, or go away
406 with your underdocumented, broken and outdated OS.
407 - fork'ing should now be officially supported (where linux and
408 posix contradict each other, I followed posix).
409 - only call read() once per poll, not twice (speedup).
410 - new functions: aio_rmdir, aio_symlink.
411 - force callback arguments to be undef or a reference, for better
412 error catching.
413
414 1.1 Sun Aug 7 05:27:23 CEST 2005
415 - added configure script to detect availability of some calls.
416 (imperfect, as we cannot detect things like -lrt due to missing
417 feedback yet).
418 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
419 and readahead via manual reading on platforms lacking those.
420 - ported t/03_errors.t+framework by Brad Fitzpatrick
421 from Linux::AIO.
422 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
423 compile with it enabled. Probably breaks others. Oh well.
424 - try to be more careful with errno on non-threaded perls.
425 - cygwins perl insisted on a matching open mode when morphing
426 the fd to an fh.
427 - convert sv's to "byte" encoding in aio_read/aio_write. Might
428 do that for pathnames, too, in the future, so make sure you
429 properly encode your pathnames.
430
431 1.0 Fri Jul 22 10:43:30 CEST 2005
432 - aio_open did not reliably deliver (open) filehandles.
433 - all aio_*-functions keep a reference to the filehandle so
434 it doesn't go away while the aio requests is working on it.
435 - disable warnings in AIO.pm.
436
437 0.9 Wed Jul 20 23:55:04 CEST 2005
438 - allow recursive calls to poll_cb, use less locking calls, too.
439 - fix the Gtk2-example in the SYNOPSIS.
440 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
441 from Linux::AIO.
442 (found by compiling on cygwin. Unfortunately, cygwin declares but
443 does not implement pread/pwrite).
444 - only include <sys/syscall.h> on linux.
445
446 0.5 Tue Jul 12 13:03:09 CEST 2005
447 - removed #include <endian.h>, it's not portable, and we don't
448 need it anyway.
449 - link against -lrt, as it might contain goodies such as fdatasync,
450 and often aio_read, which we do not use yet, but it shouldn't hurt.
451
452 0.4 Mon Jul 11 05:28:25 CEST 2005
453 - added IO::AIO::flush, IO::AIO::poll.
454 - make callback argument optional for all calls.
455
456 0.3 Mon Jul 11 01:42:37 CEST 2005
457 - restructured manpage.
458 - added SYNOPSIS with examples for Event, Glib, Tk.
459 - remove explicit context support so I don't have to maintain
460 it for threaded perls (i.e. it should work now :).
461
462 0.2 Sun Jul 10 22:57:12 CEST 2005
463 - return immediately from poll_wait if nreqs==0.
464 - get rid of the request pipe and use faster thread-thread
465 communications for most requests and responses.
466
467 0.1
468 - cloned from Linux::AIO, which is very similar.
469