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Comparing IO-AIO/Changes (file contents):
Revision 1.5 by root, Sun Jul 10 21:04:24 2005 UTC vs.
Revision 1.247 by root, Sun Mar 27 10:26:08 2011 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc.
4TODO: aio_cptree/mvtree
5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: splice/tee/vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
7TODO: aio_fcntl, at least for file-locking
8TODO: fallocate, if it wouldn't be so useless.
9TODO: aio_mincore?
10TODO: add? also linux-specific stuff?
11TODO: O_EXEC O_SEARCH O_CLOEXEC O_DIRECTORY O_DSYNC O_NOCTTY O_NOFOLLOW O_NONBLOCK O_RSYNC O_SYNC O_TTY_INIT O_DIRECT O_LARGEFILE O_NOATIME O_ASYNC
12
133.8 Sun Mar 27 12:25:33 CEST 2011
14 - use nonstandard but maybe-working-on-bsd fork technique.
15 - support a max_idle value of 0.
16 - support setting of idle timeout value (IO::AIO::idle_timeout).
17
183.72 Fri Feb 11 04:25:38 CET 2011
19 - use _POSIX_MEMLOCK_RANGE to detetc mlock/munlock.
20 - aio_mknod always used a dev_t value of 0.
21 - new treescan option: --grep.
22 - add more S_IF macros, and major/minor/makedev "macros".
23
243.71 Thu Dec 30 08:18:46 CET 2010
25 - the numerical result value passed to callbacks did not stringify
26 correctly, due to internal reuse and failure to reset the sv flags.
27 - actually test for posix_[mf]advise, as at least uClibc defines
28 _POSIX_ADVISORY_INFO without actually having any of the required
29 funcitonality. ugh.
30
313.7 Mon Nov 1 23:00:34 CET 2010
32 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
33 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
34 - document the sad state of affairs w.r.t. pthread on many bsds.
35 - do not enable mmap on systems without _POSIX_MAPPED_FILES
36 (openbsd 4.8).
37 - do not leak memory in IO::AIO::mmap when the scalar already
38 had string-data.
39 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
40 them.
41 - cache the result IV, for a minor speedup in the common case.
42 - croak when an mmapped-scalar changes location, to detect
43 user-errors better.
44 - fix aio_readlink prototype.
45
463.65 Wed Mar 31 02:45:05 CEST 2010
47 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
48 cut off long pathnames in aio_readlink (based on patch by
49 Rasmus Andersson).
50 - a double fork partially killed the event pipe (great testcase
51 by dormando). affects IO::AIO, BDB and Async::Interrupt.
52 - suck steve's dick and rename our symbols to avoid colliding
53 with nonstandard identifier spam on the broken os x pseudo-os.
54 affects IO::AIO and BDB.
55
563.6 Mon Jan 11 00:43:39 CET 2010
57 - (libeio) more fixes for the freebsd/apple sendfile - broken by
58 manpage standards, but apparently correct accoridng to actual
59 kernel sources.
60 - add IO::AIO::mmap/munmap support.
61 - add IO::AIO::m(un)lockall support.
62 - clean up manpage.
63
643.5 Thu Jan 7 21:25:04 CET 2010
65 - (liebio) fix freebsd sendfile (Vanilla Hsu).
66 - (libeio) also fix darwin sendfile that suffered from a similar bug.
67 - add aio_statvfs as interface to statvfs/fstatvfs.
68 - work around buggy symlink() on cygwin in the testsuite.
69 - wtf. freebsd-8.0 actually passes the testsuite! I knew
70 they could implement fork and semaphores one day! cheers!
71
723.4 Sat Jan 2 15:13:04 CET 2010
73 - (libeio) max_poll_time was not properly converted to ticks.
74 - clarify cancel_subs description.
75 - IO::AIO::sendfile did not actually return the return value
76 from the sendfile call.
77 - implement aio_msync, aio_mtouch.
78 - (libeio) tentatively support darwin in sendfile.
79
803.31 Thu Nov 12 02:14:29 CET 2009
81 - fix result status documentation of aio_copy, aio_move.
82 - speed up object creation considerably by avoiding
83 hash lookups.
84
853.3 Wed Aug 5 13:52:58 CEST 2009
86 - use common::sense.
87 - use common schmorp.h header.
88 - allow integers (file descriptors) in addition to file handles.
89 - take advantage of linux' eventfd (but it seems slower on smp?).
90 - use poll not select on posix platforms.
91
923.261 Wed Jul 1 10:11:51 CEST 2009
93 - more 0S X workarounds (patch by Tokuhiro Matsuno).
94
953.26 Tue Jun 30 09:33:26 CEST 2009
96 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
97 try to work around this horribly broken OS in a somewhat hackish
98 way. might help other os's too.
99
1003.25 Sat Jun 27 05:18:26 CEST 2009
101 - added IO::AIO::fadvise and IO::AIO::sendfile.
102 - (libeio) replaced quicksort+insertion sort by a tuned radix
103 sort + insertion sort, resulting in comparable runtime (usually
104 faster) to the old version, but without any ill side effects on
105 degenerated (for quicksort) data.
106 - (libeio) correctly sort dirs by inodes if we have perfect type
107 knowledge and DIRS_FIRST is used.
108 - (libeio) internally the wrong DT_* constants were used, but no
109 known system has differing EIO_DT_*/DT_* values, so not an issue.
110 - removed a (harmless) assert that was left over on the code
111 but should not have been.
112 - use more correct types (change IO length from IV to VAL64,
113 which makes a difference on systems without 64 bit perls).
114
1153.23 Sat Jun 13 16:57:58 CEST 2009
116 - fix off-by-one bug in aio_readdir that was introduced in the
117 rushed 3.22 release.
118
1193.22 Sat Jun 13 15:32:40 CEST 2009
120 - speed up readdirx sort algorithm slightly.
121 - bin/treescan was missing from distro tarball.
122
1233.21 Fri Jun 12 18:45:53 CEST 2009
124 - new options --dirs and --files for treescan.
125 - install bin/treescan by default.
126 - (libeio) aio_readdir can now be cancelled while executing.
127 - fix a printf format string for 64 bit systems (could lead
128 to problems on big endian 64 bit systems).
129 - do not use qsort() but our own algorithm: glibc initialises
130 the whole locale and I/O subsystem inside qsort, causing
131 a stack overflow on 32 bit machines. The new sort uses much less
132 stack and is more than twice as fast in typical situations.
133
1343.2 Sun Jun 7 20:30:05 CEST 2009
135 - (libeio) pwrite emulation was even more flawed than intended and did
136 not restore the file offset.
137 - add aio_readdirx, which can return inode and filetype and sort
138 the names in various ways.
139 - unfortunately, utime, chmod, chown on an open file that has just
140 been written can easily block, which caused aio_copy to block the
141 process. no more!
142 - no longer rely on dst path in aio_copy when futime is available.
143
1443.19 Tue Apr 21 22:05:21 CEST 2009
145 - more perl 5.10 workarounds for aio_read and write.
146 - aio_write no longer modifies the sv (if possible).
147 - aio_read now works correctly with magic values.
148
1493.18 Sun Apr 19 21:17:32 CEST 2009
150 - better diagnostics when some aio_* functions get passed an illegal fh.
151 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
152
1533.17 Thu Nov 20 08:45:36 CET 2008
154 - (libeio) added aio_sync_file_range (untested).
155 - add aio_busy to @IO::AIO::AIO_REQ.
156
1573.16 Wed Oct 22 18:28:01 CEST 2008
158 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
159 part to improve portability to perl 5.8 (reported by szymon).
160
1613.15 Mon Oct 13 00:39:55 CEST 2008
162 - automatic removal of feeders was broken.
163 - (libeio) use a more robust method to detect whether a feeder
164 has added something to the group or not.
165
1663.1 Thu Oct 2 13:34:40 CEST 2008
167 - pre-deref the passed callback object, for increased speed
168 and decreased memory usage.
169 - call on_next_submit callback even for aio_group - impact unknown,
170 but seems more correct.
171 - $req->cb now returns the original callback.
172 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
173 requiring a thread switch.
174 - (libeio) status code of aio_futime and aio_utime was always passed 0.
175 - do some other ยต-optimisations.
176
1773.07 Sat Aug 2 16:06:13 CEST 2008
178 - do not include LIBS in autoconf tests.
179
1803.06 Tue Jul 15 12:41:32 CEST 2008
181 - move preadwritelock definition before it's first reference,
182 to make it compile again on broken platforms (they still exist)
183 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
184
1853.05 Thu Jun 19 23:23:52 CEST 2008
186 - work around perl overriding readdir etc. with thread-unsafe
187 (sic!) versions.
188
1893.04 Wed Jun 18 01:35:38 CEST 2008
190 - (libeio) fix eio_mknod, which confused it's arguments.
191 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
192 is stupid.
193 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
194 - (libeio) fix a bug that could potentially cause IO::AIO
195 not to get initialised properly.
196
1973.03 Thu May 29 05:33:30 CEST 2008
198 - (libeio) correctly call pthread_attr_destroy ().
199 - (libeio) work around broken bsd headers once more.
200 - reduce shared library size again by not including wrappers.
201 - max_outstanding could cause poll to enter a busy-waiting loop.
202 - document the new IO::AIO::poll_cb result value.
203
2043.02 Mon May 12 02:32:02 CEST 2008
205 - fix a memory leak on aio_readlink.
206 - bring back working fchmod.
207 - nop and busy now set result to 0.
208 - set errno to ENOMEM when allocation fails.
209
2103.01 Sun May 11 03:07:03 CEST 2008
211 - (libeio) make it compile on systems without readahead or readdir_r.
212 - (libeio) improve configure check for readahead availability.
213 - do not try to link against -lrt.
214 - use a separate configure script for IO::AIO (not the libeio one).
215
2163.0 Sun May 11 00:57:14 CEST 2008
217 - added bin/treescan to the distribution.
218 - switched to using libeio.
219 - LOTS OF INCOMPATIBLE CHANGES:
220 - remove signal functionality, it is not worth the effort.
221 - max_outstanding no longer returns the previous number of requests.
222 - poll_cb no longer returns number of requests.
223
2242.62 Sat Apr 26 13:59:33 CEST 2008
225 - port to solaris perls configured for old posix
226 (analysed by Jost Krieger).
227 - keep a reference to the perl filehandle object in aio_close,
228 so it doesn't get closed prematurely, leading to ugly races.
229
2302.61 Wed Apr 16 18:45:02 CEST 2008
231 - fix treescan output duplication and improve output ordering.
232 also display files given on the commandline.
233 - use a different algorithm for aio_close that is faster
234 and probably has even lower chances of blocking.
235 - do our own stack memory management for threads - linux
236 allocates outrageous amounts of VM (not so bad unless you
237 use mlockall...), which severely limits the number of threads
238 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
239 and 4096 * sizeof (long) (usually this is 16..64k).
240
2412.6 Sun Mar 30 08:28:11 CEST 2008
242 - added aio_sync.
243 - added aio_pathsync.
244 - fix prototypes of (void) functions.
245
2462.51 Sat Oct 6 16:04:54 CEST 2007
247 - perlio isn't generally threadsafe, so aio_close could not work reliably.
248 aio_close now tries a safe hack that might not be that asynchronous
249 (see the manpage for details).
250 - discard callback return values as to not grow the stack endlessly
251 when poll_cb handles many requests without returning.
252 - minor code cleanups.
253
2542.5 Thu Oct 4 14:49:08 CEST 2007
255 - replaced _fd2fh with faster xs code.
256 - aio_close will now try to do "the right thing" and thus might
257 work sensibly for the very first time.
258
2592.41 Mon Sep 24 21:28:21 CEST 2007
260 - after fork, invest some work to make sure that the poll_fileno
261 stays stable (by dup2'ing the new fd over the old one), to make
262 it easier for programs/libs that don't control their forking
263 behaviour and cannot recreate their watchers.
264
2652.4 Sun Aug 5 18:44:22 CEST 2007
266 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
267 successfully demonstrated that you can block on futimes...).
268 - allow undef as fileoffset for aio_read/write and use read/write(2)
269 internally (useful for sockets or O_APPEND handles).
270 - allow undef for length in aio_write.
271 - negative dataoffsets work as expected now in aio_read/aio_write.
272 - use NV instead of UV for 32 bit perls and file offsets, as NVs
273 have a larger range then.
274 - shared code between BDB and IO::AIO.
275 - aio_busy was completely broken. now fixed.
276 - readahead emulation now returns something.
277 - correctly set errno to ENOSYS on unimplemented functions
278 (should never happen, though).
279 - large changes to make it partially compile and run on win32,
280 but win32 lacks too much functionality, and perl overrides way
281 too many functions with crashing versions.
282
2832.33 Tue Jan 23 23:55:41 CET 2007
284 - fix install path (Andreas J. Koenig).
285
2862.32 Mon Jan 22 16:56:23 CET 2007
287 - added aio_rmtree.
288 - wow, aio_mkdir was missing.
289 - aio_load did return undef on error, not -1.
290 - use prefixexp not prefix in autoconf.pm
291 (suggested by ... rt.cpan.org unreachable).
292 - avoid installing autoconf.pm.
293
2942.31 Sat Jan 6 03:46:02 CET 2007
295 - added aio_load.
296
2972.3 Sat Dec 23 05:48:07 CET 2006
298 - fix off-by-one bug in aio_read, causing memory corruption
299 or crashes.
300
3012.21 Fri Dec 22 05:03:38 CET 2006
302 - minor doc updates.
303 - minor cleanups.
304 - IO::AIO::poll returns request count.
305 - undocumented and unfinished async-signal-reporting.
306
3072.2 Tue Oct 31 00:31:00 CET 2006
308 - minor doc updates.
309 - added aio_readlink.
310 - properly zero-terminate aio_read buffer.
311 - fix aio_read/write with nonzero dataoffset.
312 - reduced size of aio request structure.
313 - better diagnostics when pathnames etc. are not byte-encoded;
314 do not leak request in that case, either.
315
3162.1 Sun Oct 29 02:01:57 CET 2006
317 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
318 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
319 - fix a bug in aio_move where it would fail everytime
320 it would have to copy files manually.
321 - doc updates.
322 - start threads only on (very low) demand.
323 - end superfluous threads automatically after 10s idling.
324 - add IO::AIO::max_idle to control this.
325 - some tuning applied to random places.
326 - add aio_mknod.
327
3282.0 Thu Oct 26 18:27:58 CEST 2006
329 - minor incompatibility: max_outstanding semantics have changed.
330 - major rewrite, consider all functionality EXPERIMENTAL.
331 - aio requests can be cancelled.
332 - callbacks can be (re-)set later.
333 - aio requests can choose between 9 priorities.
334 - add aio_group: aio requests can be grouped
335 into composite requests.
336 - generator interface for groups.
337 - add IO::AIO::poll_some.
338 - major documentation improvements.
339 - very minor bugfixes.
340 - add aio_nop for dummy requests.
341 - add aio_busy mainly for benchmarking and debugging.
342 - use "fast" mutexes on linux.
343 - use dynamic (and larger) buffers instead of
344 putting them onto the stack.
345 - optimise x86 and amd64 a bit.
346 - better error checking when ENOMEM.
347 - hopefully fix mem and dirp leaks on fork.
348 - warn about broken perl malloc.
349 - compiles on cygwin (but pread is broken on cygwin
350 which is not detected by autoconf, so you have to
351 edit autoconf/config.h yourself to enable emulation).
352
3531.8 Sat Jun 24 22:20:44 CEST 2006
354 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
355
3561.73 Wed Mar 1 22:49:32 CET 2006
357 - codename "jost"
358 - AIX/Solaris(?) aren't being helpful again, hardcode a value
359 for NAME_MAX and drive with your eyes closed (reported by
360 wcooley@nakedape.cc).
361
3621.72 Thu Feb 2 00:40:44 CET 2006
363 - another minor bug in aio_scandir, again, the callback was called
364 twice when the directory can't be stat'ed.
365
3661.71 Mon Dec 26 20:20:03 CET 2005
367 - grr, another minor bug in aio_scandir, this time resulting
368 in a runtime error.
369
3701.7 Mon Dec 26 19:29:48 CET 2005
371 - aio_scandir errornously called callback twice in some cases.
372 - added AnyEvent example.
373
3741.61 Wed Sep 7 19:40:42 CEST 2005
375 - no longer include $Config{libs}, as distros include too much
376 garbage in there that is not installed on typical systems
377 (for example, debian links perl against -lgdbm and many more
378 libraries despite perl not needing it, slowing down startup and
379 wasting memory).
380
3811.6 Tue Aug 30 17:44:44 CEST 2005
382 - added aio_readdir, aio_scandir.
383 - added aio_sendfile, including sendfile emulation when sendfile
384 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
385 support is unavailable on my solaris 8 machine, but preliminary
386 code is there. What's lacking is configury stuff and testing...).
387
3881.5 Sat Aug 20 02:32:19 CEST 2005
389 - create the aio threads on demand only (good after forking).
390 - somebody nagged about C89 compatibility, so this release should
391 be C89 compatible, but no guarantees for future ones.
392 - abort when the configure script fails.
393
3941.4 Wed Aug 17 08:07:27 CEST 2005
395 - forgot to recreate the pipe after forking, this could cause
396 deadlocks.
397
3981.3 Wed Aug 17 07:25:54 CEST 2005
399 - properly propagate exceptions from callbacks, instead of silently
400 eating them.
401 - use a different fork algorithm that avoids recursive callback
402 invocations and reduces fork latency in busy processes.
403 - fix a bug where the buffer scalar in aio_read got assigned the wrong
404 length after reading.
405 - fix a bug where the child would process some outstanding requests
406 from the parent.
407 - make a copy of the callback scalar, to avoid some very uncommon
408 (but valid) usages where the callback scalar changes.
409 - the callback was never freed in aio_read/aio_write.
410 - aio_read/aio_write will now set the readonly flag on the data
411 scalar for better error reporting.
412
4131.2 Wed Aug 17 01:22:58 CEST 2005
414 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
415 - use SvPVbyte for filenames now. You *need* to encode your strings to
416 the external filename encoding first.
417 - fix the bug where filehandles could leak (again).
418 - clarify freebsd situation: make it work and tell me how, or go away
419 with your underdocumented, broken and outdated OS.
420 - fork'ing should now be officially supported (where linux and
421 posix contradict each other, I followed posix).
422 - only call read() once per poll, not twice (speedup).
423 - new functions: aio_rmdir, aio_symlink.
424 - force callback arguments to be undef or a reference, for better
425 error catching.
426
4271.1 Sun Aug 7 05:27:23 CEST 2005
428 - added configure script to detect availability of some calls.
429 (imperfect, as we cannot detect things like -lrt due to missing
430 feedback yet).
431 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
432 and readahead via manual reading on platforms lacking those.
433 - ported t/03_errors.t+framework by Brad Fitzpatrick
434 from Linux::AIO.
435 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
436 compile with it enabled. Probably breaks others. Oh well.
437 - try to be more careful with errno on non-threaded perls.
438 - cygwins perl insisted on a matching open mode when morphing
439 the fd to an fh.
440 - convert sv's to "byte" encoding in aio_read/aio_write. Might
441 do that for pathnames, too, in the future, so make sure you
442 properly encode your pathnames.
443
4441.0 Fri Jul 22 10:43:30 CEST 2005
445 - aio_open did not reliably deliver (open) filehandles.
446 - all aio_*-functions keep a reference to the filehandle so
447 it doesn't go away while the aio requests is working on it.
448 - disable warnings in AIO.pm.
449
4500.9 Wed Jul 20 23:55:04 CEST 2005
451 - allow recursive calls to poll_cb, use less locking calls, too.
452 - fix the Gtk2-example in the SYNOPSIS.
453 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
454 from Linux::AIO.
455 (found by compiling on cygwin. Unfortunately, cygwin declares but
456 does not implement pread/pwrite).
457 - only include <sys/syscall.h> on linux.
458
4590.5 Tue Jul 12 13:03:09 CEST 2005
460 - removed #include <endian.h>, it's not portable, and we don't
461 need it anyway.
462 - link against -lrt, as it might contain goodies such as fdatasync,
463 and often aio_read, which we do not use yet, but it shouldn't hurt.
464
4650.4 Mon Jul 11 05:28:25 CEST 2005
466 - added IO::AIO::flush, IO::AIO::poll.
467 - make callback argument optional for all calls.
468
4690.3 Mon Jul 11 01:42:37 CEST 2005
3 - restructured manpage. 470 - restructured manpage.
471 - added SYNOPSIS with examples for Event, Glib, Tk.
472 - remove explicit context support so I don't have to maintain
473 it for threaded perls (i.e. it should work now :).
4 474
50.2 Sun Jul 10 22:57:12 CEST 2005 4750.2 Sun Jul 10 22:57:12 CEST 2005
6 - return immediately from poll_wait if nreqs==0. 476 - return immediately from poll_wait if nreqs==0.
7 - get rid of the request pipe and use faster thread-thread 477 - get rid of the request pipe and use faster thread-thread
8 communications for most requests and responses. 478 communications for most requests and responses.

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