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Revision: 1.251
Committed: Fri May 27 00:44:49 2011 UTC (13 years ago) by root
Branch: MAIN
CVS Tags: rel-3_9
Changes since 1.250: +3 -17 lines
Log Message:
3.9

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 3.9 Fri May 27 02:43:47 CEST 2011
12 - (libeio) fix memory corruption in aio_readdirx for the flags
13 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
14 - add lots of newre POSIX and GNU/Linux-specific open
15 flags.
16
17 3.8 Sun Mar 27 12:25:33 CEST 2011
18 - use nonstandard but maybe-working-on-bsd fork technique.
19 - support a max_idle value of 0.
20 - support setting of idle timeout value (IO::AIO::idle_timeout).
21
22 3.72 Fri Feb 11 04:25:38 CET 2011
23 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
24 - aio_mknod always used a dev_t value of 0.
25 - new treescan option: --grep.
26 - add more S_IF macros, and major/minor/makedev "macros".
27
28 3.71 Thu Dec 30 08:18:46 CET 2010
29 - the numerical result value passed to callbacks did not stringify
30 correctly, due to internal reuse and failure to reset the sv flags.
31 - actually test for posix_[mf]advise, as at least uClibc defines
32 _POSIX_ADVISORY_INFO without actually having any of the required
33 funcitonality. ugh.
34
35 3.7 Mon Nov 1 23:00:34 CET 2010
36 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
37 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
38 - document the sad state of affairs w.r.t. pthread on many bsds.
39 - do not enable mmap on systems without _POSIX_MAPPED_FILES
40 (openbsd 4.8).
41 - do not leak memory in IO::AIO::mmap when the scalar already
42 had string-data.
43 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
44 them.
45 - cache the result IV, for a minor speedup in the common case.
46 - croak when an mmapped-scalar changes location, to detect
47 user-errors better.
48 - fix aio_readlink prototype.
49
50 3.65 Wed Mar 31 02:45:05 CEST 2010
51 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
52 cut off long pathnames in aio_readlink (based on patch by
53 Rasmus Andersson).
54 - a double fork partially killed the event pipe (great testcase
55 by dormando). affects IO::AIO, BDB and Async::Interrupt.
56 - suck steve's dick and rename our symbols to avoid colliding
57 with nonstandard identifier spam on the broken os x pseudo-os.
58 affects IO::AIO and BDB.
59
60 3.6 Mon Jan 11 00:43:39 CET 2010
61 - (libeio) more fixes for the freebsd/apple sendfile - broken by
62 manpage standards, but apparently correct accoridng to actual
63 kernel sources.
64 - add IO::AIO::mmap/munmap support.
65 - add IO::AIO::m(un)lockall support.
66 - clean up manpage.
67
68 3.5 Thu Jan 7 21:25:04 CET 2010
69 - (liebio) fix freebsd sendfile (Vanilla Hsu).
70 - (libeio) also fix darwin sendfile that suffered from a similar bug.
71 - add aio_statvfs as interface to statvfs/fstatvfs.
72 - work around buggy symlink() on cygwin in the testsuite.
73 - wtf. freebsd-8.0 actually passes the testsuite! I knew
74 they could implement fork and semaphores one day! cheers!
75
76 3.4 Sat Jan 2 15:13:04 CET 2010
77 - (libeio) max_poll_time was not properly converted to ticks.
78 - clarify cancel_subs description.
79 - IO::AIO::sendfile did not actually return the return value
80 from the sendfile call.
81 - implement aio_msync, aio_mtouch.
82 - (libeio) tentatively support darwin in sendfile.
83
84 3.31 Thu Nov 12 02:14:29 CET 2009
85 - fix result status documentation of aio_copy, aio_move.
86 - speed up object creation considerably by avoiding
87 hash lookups.
88
89 3.3 Wed Aug 5 13:52:58 CEST 2009
90 - use common::sense.
91 - use common schmorp.h header.
92 - allow integers (file descriptors) in addition to file handles.
93 - take advantage of linux' eventfd (but it seems slower on smp?).
94 - use poll not select on posix platforms.
95
96 3.261 Wed Jul 1 10:11:51 CEST 2009
97 - more 0S X workarounds (patch by Tokuhiro Matsuno).
98
99 3.26 Tue Jun 30 09:33:26 CEST 2009
100 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
101 try to work around this horribly broken OS in a somewhat hackish
102 way. might help other os's too.
103
104 3.25 Sat Jun 27 05:18:26 CEST 2009
105 - added IO::AIO::fadvise and IO::AIO::sendfile.
106 - (libeio) replaced quicksort+insertion sort by a tuned radix
107 sort + insertion sort, resulting in comparable runtime (usually
108 faster) to the old version, but without any ill side effects on
109 degenerated (for quicksort) data.
110 - (libeio) correctly sort dirs by inodes if we have perfect type
111 knowledge and DIRS_FIRST is used.
112 - (libeio) internally the wrong DT_* constants were used, but no
113 known system has differing EIO_DT_*/DT_* values, so not an issue.
114 - removed a (harmless) assert that was left over on the code
115 but should not have been.
116 - use more correct types (change IO length from IV to VAL64,
117 which makes a difference on systems without 64 bit perls).
118
119 3.23 Sat Jun 13 16:57:58 CEST 2009
120 - fix off-by-one bug in aio_readdir that was introduced in the
121 rushed 3.22 release.
122
123 3.22 Sat Jun 13 15:32:40 CEST 2009
124 - speed up readdirx sort algorithm slightly.
125 - bin/treescan was missing from distro tarball.
126
127 3.21 Fri Jun 12 18:45:53 CEST 2009
128 - new options --dirs and --files for treescan.
129 - install bin/treescan by default.
130 - (libeio) aio_readdir can now be cancelled while executing.
131 - fix a printf format string for 64 bit systems (could lead
132 to problems on big endian 64 bit systems).
133 - do not use qsort() but our own algorithm: glibc initialises
134 the whole locale and I/O subsystem inside qsort, causing
135 a stack overflow on 32 bit machines. The new sort uses much less
136 stack and is more than twice as fast in typical situations.
137
138 3.2 Sun Jun 7 20:30:05 CEST 2009
139 - (libeio) pwrite emulation was even more flawed than intended and did
140 not restore the file offset.
141 - add aio_readdirx, which can return inode and filetype and sort
142 the names in various ways.
143 - unfortunately, utime, chmod, chown on an open file that has just
144 been written can easily block, which caused aio_copy to block the
145 process. no more!
146 - no longer rely on dst path in aio_copy when futime is available.
147
148 3.19 Tue Apr 21 22:05:21 CEST 2009
149 - more perl 5.10 workarounds for aio_read and write.
150 - aio_write no longer modifies the sv (if possible).
151 - aio_read now works correctly with magic values.
152
153 3.18 Sun Apr 19 21:17:32 CEST 2009
154 - better diagnostics when some aio_* functions get passed an illegal fh.
155 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
156
157 3.17 Thu Nov 20 08:45:36 CET 2008
158 - (libeio) added aio_sync_file_range (untested).
159 - add aio_busy to @IO::AIO::AIO_REQ.
160
161 3.16 Wed Oct 22 18:28:01 CEST 2008
162 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
163 part to improve portability to perl 5.8 (reported by szymon).
164
165 3.15 Mon Oct 13 00:39:55 CEST 2008
166 - automatic removal of feeders was broken.
167 - (libeio) use a more robust method to detect whether a feeder
168 has added something to the group or not.
169
170 3.1 Thu Oct 2 13:34:40 CEST 2008
171 - pre-deref the passed callback object, for increased speed
172 and decreased memory usage.
173 - call on_next_submit callback even for aio_group - impact unknown,
174 but seems more correct.
175 - $req->cb now returns the original callback.
176 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
177 requiring a thread switch.
178 - (libeio) status code of aio_futime and aio_utime was always passed 0.
179 - do some other ยต-optimisations.
180
181 3.07 Sat Aug 2 16:06:13 CEST 2008
182 - do not include LIBS in autoconf tests.
183
184 3.06 Tue Jul 15 12:41:32 CEST 2008
185 - move preadwritelock definition before it's first reference,
186 to make it compile again on broken platforms (they still exist)
187 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
188
189 3.05 Thu Jun 19 23:23:52 CEST 2008
190 - work around perl overriding readdir etc. with thread-unsafe
191 (sic!) versions.
192
193 3.04 Wed Jun 18 01:35:38 CEST 2008
194 - (libeio) fix eio_mknod, which confused it's arguments.
195 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
196 is stupid.
197 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
198 - (libeio) fix a bug that could potentially cause IO::AIO
199 not to get initialised properly.
200
201 3.03 Thu May 29 05:33:30 CEST 2008
202 - (libeio) correctly call pthread_attr_destroy ().
203 - (libeio) work around broken bsd headers once more.
204 - reduce shared library size again by not including wrappers.
205 - max_outstanding could cause poll to enter a busy-waiting loop.
206 - document the new IO::AIO::poll_cb result value.
207
208 3.02 Mon May 12 02:32:02 CEST 2008
209 - fix a memory leak on aio_readlink.
210 - bring back working fchmod.
211 - nop and busy now set result to 0.
212 - set errno to ENOMEM when allocation fails.
213
214 3.01 Sun May 11 03:07:03 CEST 2008
215 - (libeio) make it compile on systems without readahead or readdir_r.
216 - (libeio) improve configure check for readahead availability.
217 - do not try to link against -lrt.
218 - use a separate configure script for IO::AIO (not the libeio one).
219
220 3.0 Sun May 11 00:57:14 CEST 2008
221 - added bin/treescan to the distribution.
222 - switched to using libeio.
223 - LOTS OF INCOMPATIBLE CHANGES:
224 - remove signal functionality, it is not worth the effort.
225 - max_outstanding no longer returns the previous number of requests.
226 - poll_cb no longer returns number of requests.
227
228 2.62 Sat Apr 26 13:59:33 CEST 2008
229 - port to solaris perls configured for old posix
230 (analysed by Jost Krieger).
231 - keep a reference to the perl filehandle object in aio_close,
232 so it doesn't get closed prematurely, leading to ugly races.
233
234 2.61 Wed Apr 16 18:45:02 CEST 2008
235 - fix treescan output duplication and improve output ordering.
236 also display files given on the commandline.
237 - use a different algorithm for aio_close that is faster
238 and probably has even lower chances of blocking.
239 - do our own stack memory management for threads - linux
240 allocates outrageous amounts of VM (not so bad unless you
241 use mlockall...), which severely limits the number of threads
242 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
243 and 4096 * sizeof (long) (usually this is 16..64k).
244
245 2.6 Sun Mar 30 08:28:11 CEST 2008
246 - added aio_sync.
247 - added aio_pathsync.
248 - fix prototypes of (void) functions.
249
250 2.51 Sat Oct 6 16:04:54 CEST 2007
251 - perlio isn't generally threadsafe, so aio_close could not work reliably.
252 aio_close now tries a safe hack that might not be that asynchronous
253 (see the manpage for details).
254 - discard callback return values as to not grow the stack endlessly
255 when poll_cb handles many requests without returning.
256 - minor code cleanups.
257
258 2.5 Thu Oct 4 14:49:08 CEST 2007
259 - replaced _fd2fh with faster xs code.
260 - aio_close will now try to do "the right thing" and thus might
261 work sensibly for the very first time.
262
263 2.41 Mon Sep 24 21:28:21 CEST 2007
264 - after fork, invest some work to make sure that the poll_fileno
265 stays stable (by dup2'ing the new fd over the old one), to make
266 it easier for programs/libs that don't control their forking
267 behaviour and cannot recreate their watchers.
268
269 2.4 Sun Aug 5 18:44:22 CEST 2007
270 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
271 successfully demonstrated that you can block on futimes...).
272 - allow undef as fileoffset for aio_read/write and use read/write(2)
273 internally (useful for sockets or O_APPEND handles).
274 - allow undef for length in aio_write.
275 - negative dataoffsets work as expected now in aio_read/aio_write.
276 - use NV instead of UV for 32 bit perls and file offsets, as NVs
277 have a larger range then.
278 - shared code between BDB and IO::AIO.
279 - aio_busy was completely broken. now fixed.
280 - readahead emulation now returns something.
281 - correctly set errno to ENOSYS on unimplemented functions
282 (should never happen, though).
283 - large changes to make it partially compile and run on win32,
284 but win32 lacks too much functionality, and perl overrides way
285 too many functions with crashing versions.
286
287 2.33 Tue Jan 23 23:55:41 CET 2007
288 - fix install path (Andreas J. Koenig).
289
290 2.32 Mon Jan 22 16:56:23 CET 2007
291 - added aio_rmtree.
292 - wow, aio_mkdir was missing.
293 - aio_load did return undef on error, not -1.
294 - use prefixexp not prefix in autoconf.pm
295 (suggested by ... rt.cpan.org unreachable).
296 - avoid installing autoconf.pm.
297
298 2.31 Sat Jan 6 03:46:02 CET 2007
299 - added aio_load.
300
301 2.3 Sat Dec 23 05:48:07 CET 2006
302 - fix off-by-one bug in aio_read, causing memory corruption
303 or crashes.
304
305 2.21 Fri Dec 22 05:03:38 CET 2006
306 - minor doc updates.
307 - minor cleanups.
308 - IO::AIO::poll returns request count.
309 - undocumented and unfinished async-signal-reporting.
310
311 2.2 Tue Oct 31 00:31:00 CET 2006
312 - minor doc updates.
313 - added aio_readlink.
314 - properly zero-terminate aio_read buffer.
315 - fix aio_read/write with nonzero dataoffset.
316 - reduced size of aio request structure.
317 - better diagnostics when pathnames etc. are not byte-encoded;
318 do not leak request in that case, either.
319
320 2.1 Sun Oct 29 02:01:57 CET 2006
321 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
322 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
323 - fix a bug in aio_move where it would fail everytime
324 it would have to copy files manually.
325 - doc updates.
326 - start threads only on (very low) demand.
327 - end superfluous threads automatically after 10s idling.
328 - add IO::AIO::max_idle to control this.
329 - some tuning applied to random places.
330 - add aio_mknod.
331
332 2.0 Thu Oct 26 18:27:58 CEST 2006
333 - minor incompatibility: max_outstanding semantics have changed.
334 - major rewrite, consider all functionality EXPERIMENTAL.
335 - aio requests can be cancelled.
336 - callbacks can be (re-)set later.
337 - aio requests can choose between 9 priorities.
338 - add aio_group: aio requests can be grouped
339 into composite requests.
340 - generator interface for groups.
341 - add IO::AIO::poll_some.
342 - major documentation improvements.
343 - very minor bugfixes.
344 - add aio_nop for dummy requests.
345 - add aio_busy mainly for benchmarking and debugging.
346 - use "fast" mutexes on linux.
347 - use dynamic (and larger) buffers instead of
348 putting them onto the stack.
349 - optimise x86 and amd64 a bit.
350 - better error checking when ENOMEM.
351 - hopefully fix mem and dirp leaks on fork.
352 - warn about broken perl malloc.
353 - compiles on cygwin (but pread is broken on cygwin
354 which is not detected by autoconf, so you have to
355 edit autoconf/config.h yourself to enable emulation).
356
357 1.8 Sat Jun 24 22:20:44 CEST 2006
358 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
359
360 1.73 Wed Mar 1 22:49:32 CET 2006
361 - codename "jost"
362 - AIX/Solaris(?) aren't being helpful again, hardcode a value
363 for NAME_MAX and drive with your eyes closed (reported by
364 wcooley@nakedape.cc).
365
366 1.72 Thu Feb 2 00:40:44 CET 2006
367 - another minor bug in aio_scandir, again, the callback was called
368 twice when the directory can't be stat'ed.
369
370 1.71 Mon Dec 26 20:20:03 CET 2005
371 - grr, another minor bug in aio_scandir, this time resulting
372 in a runtime error.
373
374 1.7 Mon Dec 26 19:29:48 CET 2005
375 - aio_scandir errornously called callback twice in some cases.
376 - added AnyEvent example.
377
378 1.61 Wed Sep 7 19:40:42 CEST 2005
379 - no longer include $Config{libs}, as distros include too much
380 garbage in there that is not installed on typical systems
381 (for example, debian links perl against -lgdbm and many more
382 libraries despite perl not needing it, slowing down startup and
383 wasting memory).
384
385 1.6 Tue Aug 30 17:44:44 CEST 2005
386 - added aio_readdir, aio_scandir.
387 - added aio_sendfile, including sendfile emulation when sendfile
388 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
389 support is unavailable on my solaris 8 machine, but preliminary
390 code is there. What's lacking is configury stuff and testing...).
391
392 1.5 Sat Aug 20 02:32:19 CEST 2005
393 - create the aio threads on demand only (good after forking).
394 - somebody nagged about C89 compatibility, so this release should
395 be C89 compatible, but no guarantees for future ones.
396 - abort when the configure script fails.
397
398 1.4 Wed Aug 17 08:07:27 CEST 2005
399 - forgot to recreate the pipe after forking, this could cause
400 deadlocks.
401
402 1.3 Wed Aug 17 07:25:54 CEST 2005
403 - properly propagate exceptions from callbacks, instead of silently
404 eating them.
405 - use a different fork algorithm that avoids recursive callback
406 invocations and reduces fork latency in busy processes.
407 - fix a bug where the buffer scalar in aio_read got assigned the wrong
408 length after reading.
409 - fix a bug where the child would process some outstanding requests
410 from the parent.
411 - make a copy of the callback scalar, to avoid some very uncommon
412 (but valid) usages where the callback scalar changes.
413 - the callback was never freed in aio_read/aio_write.
414 - aio_read/aio_write will now set the readonly flag on the data
415 scalar for better error reporting.
416
417 1.2 Wed Aug 17 01:22:58 CEST 2005
418 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
419 - use SvPVbyte for filenames now. You *need* to encode your strings to
420 the external filename encoding first.
421 - fix the bug where filehandles could leak (again).
422 - clarify freebsd situation: make it work and tell me how, or go away
423 with your underdocumented, broken and outdated OS.
424 - fork'ing should now be officially supported (where linux and
425 posix contradict each other, I followed posix).
426 - only call read() once per poll, not twice (speedup).
427 - new functions: aio_rmdir, aio_symlink.
428 - force callback arguments to be undef or a reference, for better
429 error catching.
430
431 1.1 Sun Aug 7 05:27:23 CEST 2005
432 - added configure script to detect availability of some calls.
433 (imperfect, as we cannot detect things like -lrt due to missing
434 feedback yet).
435 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
436 and readahead via manual reading on platforms lacking those.
437 - ported t/03_errors.t+framework by Brad Fitzpatrick
438 from Linux::AIO.
439 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
440 compile with it enabled. Probably breaks others. Oh well.
441 - try to be more careful with errno on non-threaded perls.
442 - cygwins perl insisted on a matching open mode when morphing
443 the fd to an fh.
444 - convert sv's to "byte" encoding in aio_read/aio_write. Might
445 do that for pathnames, too, in the future, so make sure you
446 properly encode your pathnames.
447
448 1.0 Fri Jul 22 10:43:30 CEST 2005
449 - aio_open did not reliably deliver (open) filehandles.
450 - all aio_*-functions keep a reference to the filehandle so
451 it doesn't go away while the aio requests is working on it.
452 - disable warnings in AIO.pm.
453
454 0.9 Wed Jul 20 23:55:04 CEST 2005
455 - allow recursive calls to poll_cb, use less locking calls, too.
456 - fix the Gtk2-example in the SYNOPSIS.
457 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
458 from Linux::AIO.
459 (found by compiling on cygwin. Unfortunately, cygwin declares but
460 does not implement pread/pwrite).
461 - only include <sys/syscall.h> on linux.
462
463 0.5 Tue Jul 12 13:03:09 CEST 2005
464 - removed #include <endian.h>, it's not portable, and we don't
465 need it anyway.
466 - link against -lrt, as it might contain goodies such as fdatasync,
467 and often aio_read, which we do not use yet, but it shouldn't hurt.
468
469 0.4 Mon Jul 11 05:28:25 CEST 2005
470 - added IO::AIO::flush, IO::AIO::poll.
471 - make callback argument optional for all calls.
472
473 0.3 Mon Jul 11 01:42:37 CEST 2005
474 - restructured manpage.
475 - added SYNOPSIS with examples for Event, Glib, Tk.
476 - remove explicit context support so I don't have to maintain
477 it for threaded perls (i.e. it should work now :).
478
479 0.2 Sun Jul 10 22:57:12 CEST 2005
480 - return immediately from poll_wait if nreqs==0.
481 - get rid of the request pipe and use faster thread-thread
482 communications for most requests and responses.
483
484 0.1
485 - cloned from Linux::AIO, which is very similar.
486