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Comparing IO-AIO/Changes (file contents):
Revision 1.4 by root, Sun Jul 10 20:57:36 2005 UTC vs.
Revision 1.277 by root, Tue Sep 27 01:43:03 2011 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
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: aio_mincore?
9TODO: getxattr etc.?
10TODO: F_DUPFD_CLOEXEC
11
12TODO: rewrite scandir etc. to take avdantage of IO::AIO::WD
13 - IO::AIO did access uninitialised memory on unsuccessful stats.
14 - (libeio) added syncfs syscall wrapper.
15 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
16 - (libeio) support multiple indepenent working directories.
17 - applied speling corrections by Nicholas Bamber.
18
194.0 Mon Jul 18 05:01:10 CEST 2011
20 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
21 see FORK BEHAVIOUR in manpage for details.
22 - passes testsuite on win32 now and may actually work
23 (activestate 5.10.1 / MSVC6, YMMV).
24 - (libeio) fix a deadlock where a wakeup signal could be missed when
25 a timeout occured at the same time.
26 - (libeio) added realpath.
27 - (libeio) added fallocate.
28 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
29 - (libeio) do not acquire any locks when forking.
30 - (libeio) use fewer time() syscalls when waiting for new requests.
31
323.93 Wed Jun 29 23:44:18 CEST 2011
33 - ECB.H WAS MISSING.
34
353.92 Wed Jun 29 14:45:41 CEST 2011
36 - ecb.h was missing.
37
383.91 Wed Jun 29 13:24:42 CEST 2011
39 - (libeio) work around a Linux (and likely FreeBSD and other
40 kernels) bug where sendfile would not transfer all the requested
41 bytes on large transfers, using a heuristic.
42 - buggy sendfile caused aio_move/copy to sometimes fail for big
43 files (fortunately it checks that the whole file has been
44 transferred...)
45 - use libecb for higher performance and higher portability.
46 - (libeio) disable sendfile on darwin, it's too broken.
47 - disable fork tests on !linux, as only linux supports mixing
48 pthread and fork in perl.
49 - document the fact that fork doesn't work anymore when using
50 this module, on anything !GNU/Linux.
51 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
52 run on a 0.1MHz cpu. Or so.
53
543.9 Fri May 27 02:43:47 CEST 2011
55 - (libeio) fix memory corruption in aio_readdirx for the flags
56 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
57 - add lots of newer POSIX and GNU/Linux-specific open
58 flags.
59
603.8 Sun Mar 27 12:25:33 CEST 2011
61 - use nonstandard but maybe-working-on-bsd fork technique.
62 - support a max_idle value of 0.
63 - support setting of idle timeout value (IO::AIO::idle_timeout).
64
653.72 Fri Feb 11 04:25:38 CET 2011
66 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
67 - aio_mknod always used a dev_t value of 0.
68 - new treescan option: --grep.
69 - add more S_IF macros, and major/minor/makedev "macros".
70
713.71 Thu Dec 30 08:18:46 CET 2010
72 - the numerical result value passed to callbacks did not stringify
73 correctly, due to internal reuse and failure to reset the sv flags.
74 - actually test for posix_[mf]advise, as at least uClibc defines
75 _POSIX_ADVISORY_INFO without actually having any of the required
76 funcitonality. ugh.
77
783.7 Mon Nov 1 23:00:34 CET 2010
79 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
80 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
81 - document the sad state of affairs w.r.t. pthread on many bsds.
82 - do not enable mmap on systems without _POSIX_MAPPED_FILES
83 (openbsd 4.8).
84 - do not leak memory in IO::AIO::mmap when the scalar already
85 had string-data.
86 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
87 them.
88 - cache the result IV, for a minor speedup in the common case.
89 - croak when an mmapped-scalar changes location, to detect
90 user-errors better.
91 - fix aio_readlink prototype.
92
933.65 Wed Mar 31 02:45:05 CEST 2010
94 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
95 cut off long pathnames in aio_readlink (based on patch by
96 Rasmus Andersson).
97 - a double fork partially killed the event pipe (great testcase
98 by dormando). affects IO::AIO, BDB and Async::Interrupt.
99 - suck steve's dick and rename our symbols to avoid colliding
100 with nonstandard identifier spam on the broken os x pseudo-os.
101 affects IO::AIO and BDB.
102
1033.6 Mon Jan 11 00:43:39 CET 2010
104 - (libeio) more fixes for the freebsd/apple sendfile - broken by
105 manpage standards, but apparently correct accoridng to actual
106 kernel sources.
107 - add IO::AIO::mmap/munmap support.
108 - add IO::AIO::m(un)lockall support.
109 - clean up manpage.
110
1113.5 Thu Jan 7 21:25:04 CET 2010
112 - (liebio) fix freebsd sendfile (Vanilla Hsu).
113 - (libeio) also fix darwin sendfile that suffered from a similar bug.
114 - add aio_statvfs as interface to statvfs/fstatvfs.
115 - work around buggy symlink() on cygwin in the testsuite.
116 - wtf. freebsd-8.0 actually passes the testsuite! I knew
117 they could implement fork and semaphores one day! cheers!
118
1193.4 Sat Jan 2 15:13:04 CET 2010
120 - (libeio) max_poll_time was not properly converted to ticks.
121 - clarify cancel_subs description.
122 - IO::AIO::sendfile did not actually return the return value
123 from the sendfile call.
124 - implement aio_msync, aio_mtouch.
125 - (libeio) tentatively support darwin in sendfile.
126
1273.31 Thu Nov 12 02:14:29 CET 2009
128 - fix result status documentation of aio_copy, aio_move.
129 - speed up object creation considerably by avoiding
130 hash lookups.
131
1323.3 Wed Aug 5 13:52:58 CEST 2009
133 - use common::sense.
134 - use common schmorp.h header.
135 - allow integers (file descriptors) in addition to file handles.
136 - take advantage of linux' eventfd (but it seems slower on smp?).
137 - use poll not select on posix platforms.
138
1393.261 Wed Jul 1 10:11:51 CEST 2009
140 - more 0S X workarounds (patch by Tokuhiro Matsuno).
141
1423.26 Tue Jun 30 09:33:26 CEST 2009
143 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
144 try to work around this horribly broken OS in a somewhat hackish
145 way. might help other os's too.
146
1473.25 Sat Jun 27 05:18:26 CEST 2009
148 - added IO::AIO::fadvise and IO::AIO::sendfile.
149 - (libeio) replaced quicksort+insertion sort by a tuned radix
150 sort + insertion sort, resulting in comparable runtime (usually
151 faster) to the old version, but without any ill side effects on
152 degenerated (for quicksort) data.
153 - (libeio) correctly sort dirs by inodes if we have perfect type
154 knowledge and DIRS_FIRST is used.
155 - (libeio) internally the wrong DT_* constants were used, but no
156 known system has differing EIO_DT_*/DT_* values, so not an issue.
157 - removed a (harmless) assert that was left over on the code
158 but should not have been.
159 - use more correct types (change IO length from IV to VAL64,
160 which makes a difference on systems without 64 bit perls).
161
1623.23 Sat Jun 13 16:57:58 CEST 2009
163 - fix off-by-one bug in aio_readdir that was introduced in the
164 rushed 3.22 release.
165
1663.22 Sat Jun 13 15:32:40 CEST 2009
167 - speed up readdirx sort algorithm slightly.
168 - bin/treescan was missing from distro tarball.
169
1703.21 Fri Jun 12 18:45:53 CEST 2009
171 - new options --dirs and --files for treescan.
172 - install bin/treescan by default.
173 - (libeio) aio_readdir can now be cancelled while executing.
174 - fix a printf format string for 64 bit systems (could lead
175 to problems on big endian 64 bit systems).
176 - do not use qsort() but our own algorithm: glibc initialises
177 the whole locale and I/O subsystem inside qsort, causing
178 a stack overflow on 32 bit machines. The new sort uses much less
179 stack and is more than twice as fast in typical situations.
180
1813.2 Sun Jun 7 20:30:05 CEST 2009
182 - (libeio) pwrite emulation was even more flawed than intended and did
183 not restore the file offset.
184 - add aio_readdirx, which can return inode and filetype and sort
185 the names in various ways.
186 - unfortunately, utime, chmod, chown on an open file that has just
187 been written can easily block, which caused aio_copy to block the
188 process. no more!
189 - no longer rely on dst path in aio_copy when futime is available.
190
1913.19 Tue Apr 21 22:05:21 CEST 2009
192 - more perl 5.10 workarounds for aio_read and write.
193 - aio_write no longer modifies the sv (if possible).
194 - aio_read now works correctly with magic values.
195
1963.18 Sun Apr 19 21:17:32 CEST 2009
197 - better diagnostics when some aio_* functions get passed an illegal fh.
198 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
199
2003.17 Thu Nov 20 08:45:36 CET 2008
201 - (libeio) added aio_sync_file_range (untested).
202 - add aio_busy to @IO::AIO::AIO_REQ.
203
2043.16 Wed Oct 22 18:28:01 CEST 2008
205 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
206 part to improve portability to perl 5.8 (reported by szymon).
207
2083.15 Mon Oct 13 00:39:55 CEST 2008
209 - automatic removal of feeders was broken.
210 - (libeio) use a more robust method to detect whether a feeder
211 has added something to the group or not.
212
2133.1 Thu Oct 2 13:34:40 CEST 2008
214 - pre-deref the passed callback object, for increased speed
215 and decreased memory usage.
216 - call on_next_submit callback even for aio_group - impact unknown,
217 but seems more correct.
218 - $req->cb now returns the original callback.
219 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
220 requiring a thread switch.
221 - (libeio) status code of aio_futime and aio_utime was always passed 0.
222 - do some other ยต-optimisations.
223
2243.07 Sat Aug 2 16:06:13 CEST 2008
225 - do not include LIBS in autoconf tests.
226
2273.06 Tue Jul 15 12:41:32 CEST 2008
228 - move preadwritelock definition before it's first reference,
229 to make it compile again on broken platforms (they still exist)
230 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
231
2323.05 Thu Jun 19 23:23:52 CEST 2008
233 - work around perl overriding readdir etc. with thread-unsafe
234 (sic!) versions.
235
2363.04 Wed Jun 18 01:35:38 CEST 2008
237 - (libeio) fix eio_mknod, which confused it's arguments.
238 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
239 is stupid.
240 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
241 - (libeio) fix a bug that could potentially cause IO::AIO
242 not to get initialised properly.
243
2443.03 Thu May 29 05:33:30 CEST 2008
245 - (libeio) correctly call pthread_attr_destroy ().
246 - (libeio) work around broken bsd headers once more.
247 - reduce shared library size again by not including wrappers.
248 - max_outstanding could cause poll to enter a busy-waiting loop.
249 - document the new IO::AIO::poll_cb result value.
250
2513.02 Mon May 12 02:32:02 CEST 2008
252 - fix a memory leak on aio_readlink.
253 - bring back working fchmod.
254 - nop and busy now set result to 0.
255 - set errno to ENOMEM when allocation fails.
256
2573.01 Sun May 11 03:07:03 CEST 2008
258 - (libeio) make it compile on systems without readahead or readdir_r.
259 - (libeio) improve configure check for readahead availability.
260 - do not try to link against -lrt.
261 - use a separate configure script for IO::AIO (not the libeio one).
262
2633.0 Sun May 11 00:57:14 CEST 2008
264 - added bin/treescan to the distribution.
265 - switched to using libeio.
266 - LOTS OF INCOMPATIBLE CHANGES:
267 - remove signal functionality, it is not worth the effort.
268 - max_outstanding no longer returns the previous number of requests.
269 - poll_cb no longer returns number of requests.
270
2712.62 Sat Apr 26 13:59:33 CEST 2008
272 - port to solaris perls configured for old posix
273 (analysed by Jost Krieger).
274 - keep a reference to the perl filehandle object in aio_close,
275 so it doesn't get closed prematurely, leading to ugly races.
276
2772.61 Wed Apr 16 18:45:02 CEST 2008
278 - fix treescan output duplication and improve output ordering.
279 also display files given on the commandline.
280 - use a different algorithm for aio_close that is faster
281 and probably has even lower chances of blocking.
282 - do our own stack memory management for threads - linux
283 allocates outrageous amounts of VM (not so bad unless you
284 use mlockall...), which severely limits the number of threads
285 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
286 and 4096 * sizeof (long) (usually this is 16..64k).
287
2882.6 Sun Mar 30 08:28:11 CEST 2008
289 - added aio_sync.
290 - added aio_pathsync.
291 - fix prototypes of (void) functions.
292
2932.51 Sat Oct 6 16:04:54 CEST 2007
294 - perlio isn't generally threadsafe, so aio_close could not work reliably.
295 aio_close now tries a safe hack that might not be that asynchronous
296 (see the manpage for details).
297 - discard callback return values as to not grow the stack endlessly
298 when poll_cb handles many requests without returning.
299 - minor code cleanups.
300
3012.5 Thu Oct 4 14:49:08 CEST 2007
302 - replaced _fd2fh with faster xs code.
303 - aio_close will now try to do "the right thing" and thus might
304 work sensibly for the very first time.
305
3062.41 Mon Sep 24 21:28:21 CEST 2007
307 - after fork, invest some work to make sure that the poll_fileno
308 stays stable (by dup2'ing the new fd over the old one), to make
309 it easier for programs/libs that don't control their forking
310 behaviour and cannot recreate their watchers.
311
3122.4 Sun Aug 5 18:44:22 CEST 2007
313 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
314 successfully demonstrated that you can block on futimes...).
315 - allow undef as fileoffset for aio_read/write and use read/write(2)
316 internally (useful for sockets or O_APPEND handles).
317 - allow undef for length in aio_write.
318 - negative dataoffsets work as expected now in aio_read/aio_write.
319 - use NV instead of UV for 32 bit perls and file offsets, as NVs
320 have a larger range then.
321 - shared code between BDB and IO::AIO.
322 - aio_busy was completely broken. now fixed.
323 - readahead emulation now returns something.
324 - correctly set errno to ENOSYS on unimplemented functions
325 (should never happen, though).
326 - large changes to make it partially compile and run on win32,
327 but win32 lacks too much functionality, and perl overrides way
328 too many functions with crashing versions.
329
3302.33 Tue Jan 23 23:55:41 CET 2007
331 - fix install path (Andreas J. Koenig).
332
3332.32 Mon Jan 22 16:56:23 CET 2007
334 - added aio_rmtree.
335 - wow, aio_mkdir was missing.
336 - aio_load did return undef on error, not -1.
337 - use prefixexp not prefix in autoconf.pm
338 (suggested by ... rt.cpan.org unreachable).
339 - avoid installing autoconf.pm.
340
3412.31 Sat Jan 6 03:46:02 CET 2007
342 - added aio_load.
343
3442.3 Sat Dec 23 05:48:07 CET 2006
345 - fix off-by-one bug in aio_read, causing memory corruption
346 or crashes.
347
3482.21 Fri Dec 22 05:03:38 CET 2006
349 - minor doc updates.
350 - minor cleanups.
351 - IO::AIO::poll returns request count.
352 - undocumented and unfinished async-signal-reporting.
353
3542.2 Tue Oct 31 00:31:00 CET 2006
355 - minor doc updates.
356 - added aio_readlink.
357 - properly zero-terminate aio_read buffer.
358 - fix aio_read/write with nonzero dataoffset.
359 - reduced size of aio request structure.
360 - better diagnostics when pathnames etc. are not byte-encoded;
361 do not leak request in that case, either.
362
3632.1 Sun Oct 29 02:01:57 CET 2006
364 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
365 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
366 - fix a bug in aio_move where it would fail everytime
367 it would have to copy files manually.
368 - doc updates.
369 - start threads only on (very low) demand.
370 - end superfluous threads automatically after 10s idling.
371 - add IO::AIO::max_idle to control this.
372 - some tuning applied to random places.
373 - add aio_mknod.
374
3752.0 Thu Oct 26 18:27:58 CEST 2006
376 - minor incompatibility: max_outstanding semantics have changed.
377 - major rewrite, consider all functionality EXPERIMENTAL.
378 - aio requests can be cancelled.
379 - callbacks can be (re-)set later.
380 - aio requests can choose between 9 priorities.
381 - add aio_group: aio requests can be grouped
382 into composite requests.
383 - generator interface for groups.
384 - add IO::AIO::poll_some.
385 - major documentation improvements.
386 - very minor bugfixes.
387 - add aio_nop for dummy requests.
388 - add aio_busy mainly for benchmarking and debugging.
389 - use "fast" mutexes on linux.
390 - use dynamic (and larger) buffers instead of
391 putting them onto the stack.
392 - optimise x86 and amd64 a bit.
393 - better error checking when ENOMEM.
394 - hopefully fix mem and dirp leaks on fork.
395 - warn about broken perl malloc.
396 - compiles on cygwin (but pread is broken on cygwin
397 which is not detected by autoconf, so you have to
398 edit autoconf/config.h yourself to enable emulation).
399
4001.8 Sat Jun 24 22:20:44 CEST 2006
401 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
402
4031.73 Wed Mar 1 22:49:32 CET 2006
404 - codename "jost"
405 - AIX/Solaris(?) aren't being helpful again, hardcode a value
406 for NAME_MAX and drive with your eyes closed (reported by
407 wcooley@nakedape.cc).
408
4091.72 Thu Feb 2 00:40:44 CET 2006
410 - another minor bug in aio_scandir, again, the callback was called
411 twice when the directory can't be stat'ed.
412
4131.71 Mon Dec 26 20:20:03 CET 2005
414 - grr, another minor bug in aio_scandir, this time resulting
415 in a runtime error.
416
4171.7 Mon Dec 26 19:29:48 CET 2005
418 - aio_scandir errornously called callback twice in some cases.
419 - added AnyEvent example.
420
4211.61 Wed Sep 7 19:40:42 CEST 2005
422 - no longer include $Config{libs}, as distros include too much
423 garbage in there that is not installed on typical systems
424 (for example, debian links perl against -lgdbm and many more
425 libraries despite perl not needing it, slowing down startup and
426 wasting memory).
427
4281.6 Tue Aug 30 17:44:44 CEST 2005
429 - added aio_readdir, aio_scandir.
430 - added aio_sendfile, including sendfile emulation when sendfile
431 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
432 support is unavailable on my solaris 8 machine, but preliminary
433 code is there. What's lacking is configury stuff and testing...).
434
4351.5 Sat Aug 20 02:32:19 CEST 2005
436 - create the aio threads on demand only (good after forking).
437 - somebody nagged about C89 compatibility, so this release should
438 be C89 compatible, but no guarantees for future ones.
439 - abort when the configure script fails.
440
4411.4 Wed Aug 17 08:07:27 CEST 2005
442 - forgot to recreate the pipe after forking, this could cause
443 deadlocks.
444
4451.3 Wed Aug 17 07:25:54 CEST 2005
446 - properly propagate exceptions from callbacks, instead of silently
447 eating them.
448 - use a different fork algorithm that avoids recursive callback
449 invocations and reduces fork latency in busy processes.
450 - fix a bug where the buffer scalar in aio_read got assigned the wrong
451 length after reading.
452 - fix a bug where the child would process some outstanding requests
453 from the parent.
454 - make a copy of the callback scalar, to avoid some very uncommon
455 (but valid) usages where the callback scalar changes.
456 - the callback was never freed in aio_read/aio_write.
457 - aio_read/aio_write will now set the readonly flag on the data
458 scalar for better error reporting.
459
4601.2 Wed Aug 17 01:22:58 CEST 2005
461 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
462 - use SvPVbyte for filenames now. You *need* to encode your strings to
463 the external filename encoding first.
464 - fix the bug where filehandles could leak (again).
465 - clarify freebsd situation: make it work and tell me how, or go away
466 with your underdocumented, broken and outdated OS.
467 - fork'ing should now be officially supported (where linux and
468 posix contradict each other, I followed posix).
469 - only call read() once per poll, not twice (speedup).
470 - new functions: aio_rmdir, aio_symlink.
471 - force callback arguments to be undef or a reference, for better
472 error catching.
473
4741.1 Sun Aug 7 05:27:23 CEST 2005
475 - added configure script to detect availability of some calls.
476 (imperfect, as we cannot detect things like -lrt due to missing
477 feedback yet).
478 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
479 and readahead via manual reading on platforms lacking those.
480 - ported t/03_errors.t+framework by Brad Fitzpatrick
481 from Linux::AIO.
482 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
483 compile with it enabled. Probably breaks others. Oh well.
484 - try to be more careful with errno on non-threaded perls.
485 - cygwins perl insisted on a matching open mode when morphing
486 the fd to an fh.
487 - convert sv's to "byte" encoding in aio_read/aio_write. Might
488 do that for pathnames, too, in the future, so make sure you
489 properly encode your pathnames.
490
4911.0 Fri Jul 22 10:43:30 CEST 2005
492 - aio_open did not reliably deliver (open) filehandles.
493 - all aio_*-functions keep a reference to the filehandle so
494 it doesn't go away while the aio requests is working on it.
495 - disable warnings in AIO.pm.
496
4970.9 Wed Jul 20 23:55:04 CEST 2005
498 - allow recursive calls to poll_cb, use less locking calls, too.
499 - fix the Gtk2-example in the SYNOPSIS.
500 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
501 from Linux::AIO.
502 (found by compiling on cygwin. Unfortunately, cygwin declares but
503 does not implement pread/pwrite).
504 - only include <sys/syscall.h> on linux.
505
5060.5 Tue Jul 12 13:03:09 CEST 2005
507 - removed #include <endian.h>, it's not portable, and we don't
508 need it anyway.
509 - link against -lrt, as it might contain goodies such as fdatasync,
510 and often aio_read, which we do not use yet, but it shouldn't hurt.
511
5120.4 Mon Jul 11 05:28:25 CEST 2005
513 - added IO::AIO::flush, IO::AIO::poll.
514 - make callback argument optional for all calls.
515
5160.3 Mon Jul 11 01:42:37 CEST 2005
517 - restructured manpage.
518 - added SYNOPSIS with examples for Event, Glib, Tk.
519 - remove explicit context support so I don't have to maintain
520 it for threaded perls (i.e. it should work now :).
2 521
30.2 Sun Jul 10 22:57:12 CEST 2005 5220.2 Sun Jul 10 22:57:12 CEST 2005
4 - return immediately from poll_wait if nreqs==0. 523 - return immediately from poll_wait if nreqs==0.
5 - get rid of the request pipe and use faster thread-thread 524 - get rid of the request pipe and use faster thread-thread
6 communications for most requests and responses. 525 communications for most requests and responses.

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