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Revision: 1.237
Committed: Sun Sep 12 03:36:27 2010 UTC (13 years, 8 months ago) by root
Branch: MAIN
Changes since 1.236: +4 -3 lines
Log Message:
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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 TODO: add? also linux-specific stuff?
11 O_EXEC
12 O_SEARCH
13 O_CLOEXEC
14 O_DIRECTORY
15 O_DSYNC
16 O_NOCTTY
17 O_NOFOLLOW
18 O_NONBLOCK
19 O_RSYNC
20 O_SYNC
21 O_TTY_INIT
22
23 O_DIRECT
24 O_LARGEFILE
25 O_NOATIME
26 O_ASYNC
27 TODO: document/test madvise, mprotect
28 TODO: aio_mlock/munlock, aio_mlockakk, munlockall
29 - do not leak memory in IO::AIO::mmap when the scalar already
30 had string-data.
31 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-documented
32 them.
33 - cache the result IV, for a minor speedup in the common case.
34 - croak when an mmapped-scalar changes location, to detect
35 user-errors better.
36 - fix aio_readlink prototype.
37 - add madvise, mmap, munmap, aio_mlockall, munlockall,
38 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
39
40 3.65 Wed Mar 31 02:45:05 CEST 2010
41 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
42 cut off long pathnames in aio_readlink (based on patch by
43 Rasmus Andersson).
44 - a double fork partially killed the event pipe (great testcase
45 by dormando). affects IO::AIO, BDB and Async::Interrupt.
46 - suck steve's dick and rename our symbols to avoid colliding
47 with nonstandard identifier spam on the broken os x pseudo-os.
48 affects IO::AIO and BDB.
49
50 3.6 Mon Jan 11 00:43:39 CET 2010
51 - (libeio) more fixes for the freebsd/apple sendfile - broken by
52 manpage standards, but apparently correct accoridng to actual
53 kernel sources.
54 - add IO::AIO::mmap/munmap support.
55 - add IO::AIO::m(un)lockall support.
56 - clean up manpage.
57
58 3.5 Thu Jan 7 21:25:04 CET 2010
59 - (liebio) fix freebsd sendfile (Vanilla Hsu).
60 - (libeio) also fix darwin sendfile that suffered from a similar bug.
61 - add aio_statvfs as interface to statvfs/fstatvfs.
62 - work around buggy symlink() on cygwin in the testsuite.
63 - wtf. freebsd-8.0 actually passes the testsuite! I knew
64 they could implement fork and semaphores one day! cheers!
65
66 3.4 Sat Jan 2 15:13:04 CET 2010
67 - (libeio) max_poll_time was not properly converted to ticks.
68 - clarify cancel_subs description.
69 - IO::AIO::sendfile did not actually return the return value
70 from the sendfile call.
71 - implement aio_msync, aio_mtouch.
72 - (libeio) tentatively support darwin in sendfile.
73
74 3.31 Thu Nov 12 02:14:29 CET 2009
75 - fix result status documentation of aio_copy, aio_move.
76 - speed up object creation considerably by avoiding
77 hash lookups.
78
79 3.3 Wed Aug 5 13:52:58 CEST 2009
80 - use common::sense.
81 - use common schmorp.h header.
82 - allow integers (file descriptors) in addition to file handles.
83 - take advantage of linux' eventfd (but it seems slower on smp?).
84 - use poll not select on posix platforms.
85
86 3.261 Wed Jul 1 10:11:51 CEST 2009
87 - more 0S X workarounds (patch by Tokuhiro Matsuno).
88
89 3.26 Tue Jun 30 09:33:26 CEST 2009
90 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
91 try to work around this horribly broken OS in a somewhat hackish
92 way. might help other os's too.
93
94 3.25 Sat Jun 27 05:18:26 CEST 2009
95 - added IO::AIO::fadvise and IO::AIO::sendfile.
96 - (libeio) replaced quicksort+insertion sort by a tuned radix
97 sort + insertion sort, resulting in comparable runtime (usually
98 faster) to the old version, but without any ill side effects on
99 degenerated (for quicksort) data.
100 - (libeio) correctly sort dirs by inodes if we have perfect type
101 knowledge and DIRS_FIRST is used.
102 - (libeio) internally the wrong DT_* constants were used, but no
103 known system has differing EIO_DT_*/DT_* values, so not an issue.
104 - removed a (harmless) assert that was left over on the code
105 but should not have been.
106 - use more correct types (change IO length from IV to VAL64,
107 which makes a difference on systems without 64 bit perls).
108
109 3.23 Sat Jun 13 16:57:58 CEST 2009
110 - fix off-by-one bug in aio_readdir that was introduced in the
111 rushed 3.22 release.
112
113 3.22 Sat Jun 13 15:32:40 CEST 2009
114 - speed up readdirx sort algorithm slightly.
115 - bin/treescan was missing from distro tarball.
116
117 3.21 Fri Jun 12 18:45:53 CEST 2009
118 - new options --dirs and --files for treescan.
119 - install bin/treescan by default.
120 - (libeio) aio_readdir can now be cancelled while executing.
121 - fix a printf format string for 64 bit systems (could lead
122 to problems on big endian 64 bit systems).
123 - do not use qsort() but our own algorithm: glibc initialises
124 the whole locale and I/O subsystem inside qsort, causing
125 a stack overflow on 32 bit machines. The new sort uses much less
126 stack and is more than twice as fast in typical situations.
127
128 3.2 Sun Jun 7 20:30:05 CEST 2009
129 - (libeio) pwrite emulation was even more flawed than intended and did
130 not restore the file offset.
131 - add aio_readdirx, which can return inode and filetype and sort
132 the names in various ways.
133 - unfortunately, utime, chmod, chown on an open file that has just
134 been written can easily block, which caused aio_copy to block the
135 process. no more!
136 - no longer rely on dst path in aio_copy when futime is available.
137
138 3.19 Tue Apr 21 22:05:21 CEST 2009
139 - more perl 5.10 workarounds for aio_read and write.
140 - aio_write no longer modifies the sv (if possible).
141 - aio_read now works correctly with magic values.
142
143 3.18 Sun Apr 19 21:17:32 CEST 2009
144 - better diagnostics when some aio_* functions get passed an illegal fh.
145 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
146
147 3.17 Thu Nov 20 08:45:36 CET 2008
148 - (libeio) added aio_sync_file_range (untested).
149 - add aio_busy to @IO::AIO::AIO_REQ.
150
151 3.16 Wed Oct 22 18:28:01 CEST 2008
152 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
153 part to improve portability to perl 5.8 (reported by szymon).
154
155 3.15 Mon Oct 13 00:39:55 CEST 2008
156 - automatic removal of feeders was broken.
157 - (libeio) use a more robust method to detect whether a feeder
158 has added something to the group or not.
159
160 3.1 Thu Oct 2 13:34:40 CEST 2008
161 - pre-deref the passed callback object, for increased speed
162 and decreased memory usage.
163 - call on_next_submit callback even for aio_group - impact unknown,
164 but seems more correct.
165 - $req->cb now returns the original callback.
166 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
167 requiring a thread switch.
168 - (libeio) status code of aio_futime and aio_utime was always passed 0.
169 - do some other ยต-optimisations.
170
171 3.07 Sat Aug 2 16:06:13 CEST 2008
172 - do not include LIBS in autoconf tests.
173
174 3.06 Tue Jul 15 12:41:32 CEST 2008
175 - move preadwritelock definition before it's first reference,
176 to make it compile again on broken platforms (they still exist)
177 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
178
179 3.05 Thu Jun 19 23:23:52 CEST 2008
180 - work around perl overriding readdir etc. with thread-unsafe
181 (sic!) versions.
182
183 3.04 Wed Jun 18 01:35:38 CEST 2008
184 - (libeio) fix eio_mknod, which confused it's arguments.
185 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
186 is stupid.
187 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
188 - (libeio) fix a bug that could potentially cause IO::AIO
189 not to get initialised properly.
190
191 3.03 Thu May 29 05:33:30 CEST 2008
192 - (libeio) correctly call pthread_attr_destroy ().
193 - (libeio) work around broken bsd headers once more.
194 - reduce shared library size again by not including wrappers.
195 - max_outstanding could cause poll to enter a busy-waiting loop.
196 - document the new IO::AIO::poll_cb result value.
197
198 3.02 Mon May 12 02:32:02 CEST 2008
199 - fix a memory leak on aio_readlink.
200 - bring back working fchmod.
201 - nop and busy now set result to 0.
202 - set errno to ENOMEM when allocation fails.
203
204 3.01 Sun May 11 03:07:03 CEST 2008
205 - (libeio) make it compile on systems without readahead or readdir_r.
206 - (libeio) improve configure check for readahead availability.
207 - do not try to link against -lrt.
208 - use a separate configure script for IO::AIO (not the libeio one).
209
210 3.0 Sun May 11 00:57:14 CEST 2008
211 - added bin/treescan to the distribution.
212 - switched to using libeio.
213 - LOTS OF INCOMPATIBLE CHANGES:
214 - remove signal functionality, it is not worth the effort.
215 - max_outstanding no longer returns the previous number of requests.
216 - poll_cb no longer returns number of requests.
217
218 2.62 Sat Apr 26 13:59:33 CEST 2008
219 - port to solaris perls configured for old posix
220 (analysed by Jost Krieger).
221 - keep a reference to the perl filehandle object in aio_close,
222 so it doesn't get closed prematurely, leading to ugly races.
223
224 2.61 Wed Apr 16 18:45:02 CEST 2008
225 - fix treescan output duplication and improve output ordering.
226 also display files given on the commandline.
227 - use a different algorithm for aio_close that is faster
228 and probably has even lower chances of blocking.
229 - do our own stack memory management for threads - linux
230 allocates outrageous amounts of VM (not so bad unless you
231 use mlockall...), which severely limits the number of threads
232 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
233 and 4096 * sizeof (long) (usually this is 16..64k).
234
235 2.6 Sun Mar 30 08:28:11 CEST 2008
236 - added aio_sync.
237 - added aio_pathsync.
238 - fix prototypes of (void) functions.
239
240 2.51 Sat Oct 6 16:04:54 CEST 2007
241 - perlio isn't generally threadsafe, so aio_close could not work reliably.
242 aio_close now tries a safe hack that might not be that asynchronous
243 (see the manpage for details).
244 - discard callback return values as to not grow the stack endlessly
245 when poll_cb handles many requests without returning.
246 - minor code cleanups.
247
248 2.5 Thu Oct 4 14:49:08 CEST 2007
249 - replaced _fd2fh with faster xs code.
250 - aio_close will now try to do "the right thing" and thus might
251 work sensibly for the very first time.
252
253 2.41 Mon Sep 24 21:28:21 CEST 2007
254 - after fork, invest some work to make sure that the poll_fileno
255 stays stable (by dup2'ing the new fd over the old one), to make
256 it easier for programs/libs that don't control their forking
257 behaviour and cannot recreate their watchers.
258
259 2.4 Sun Aug 5 18:44:22 CEST 2007
260 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
261 successfully demonstrated that you can block on futimes...).
262 - allow undef as fileoffset for aio_read/write and use read/write(2)
263 internally (useful for sockets or O_APPEND handles).
264 - allow undef for length in aio_write.
265 - negative dataoffsets work as expected now in aio_read/aio_write.
266 - use NV instead of UV for 32 bit perls and file offsets, as NVs
267 have a larger range then.
268 - shared code between BDB and IO::AIO.
269 - aio_busy was completely broken. now fixed.
270 - readahead emulation now returns something.
271 - correctly set errno to ENOSYS on unimplemented functions
272 (should never happen, though).
273 - large changes to make it partially compile and run on win32,
274 but win32 lacks too much functionality, and perl overrides way
275 too many functions with crashing versions.
276
277 2.33 Tue Jan 23 23:55:41 CET 2007
278 - fix install path (Andreas J. Koenig).
279
280 2.32 Mon Jan 22 16:56:23 CET 2007
281 - added aio_rmtree.
282 - wow, aio_mkdir was missing.
283 - aio_load did return undef on error, not -1.
284 - use prefixexp not prefix in autoconf.pm
285 (suggested by ... rt.cpan.org unreachable).
286 - avoid installing autoconf.pm.
287
288 2.31 Sat Jan 6 03:46:02 CET 2007
289 - added aio_load.
290
291 2.3 Sat Dec 23 05:48:07 CET 2006
292 - fix off-by-one bug in aio_read, causing memory corruption
293 or crashes.
294
295 2.21 Fri Dec 22 05:03:38 CET 2006
296 - minor doc updates.
297 - minor cleanups.
298 - IO::AIO::poll returns request count.
299 - undocumented and unfinished async-signal-reporting.
300
301 2.2 Tue Oct 31 00:31:00 CET 2006
302 - minor doc updates.
303 - added aio_readlink.
304 - properly zero-terminate aio_read buffer.
305 - fix aio_read/write with nonzero dataoffset.
306 - reduced size of aio request structure.
307 - better diagnostics when pathnames etc. are not byte-encoded;
308 do not leak request in that case, either.
309
310 2.1 Sun Oct 29 02:01:57 CET 2006
311 - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by
312 IO::AIO::max_poll_reqs and IO::AIO::max_poll_time.
313 - fix a bug in aio_move where it would fail everytime
314 it would have to copy files manually.
315 - doc updates.
316 - start threads only on (very low) demand.
317 - end superfluous threads automatically after 10s idling.
318 - add IO::AIO::max_idle to control this.
319 - some tuning applied to random places.
320 - add aio_mknod.
321
322 2.0 Thu Oct 26 18:27:58 CEST 2006
323 - minor incompatibility: max_outstanding semantics have changed.
324 - major rewrite, consider all functionality EXPERIMENTAL.
325 - aio requests can be cancelled.
326 - callbacks can be (re-)set later.
327 - aio requests can choose between 9 priorities.
328 - add aio_group: aio requests can be grouped
329 into composite requests.
330 - generator interface for groups.
331 - add IO::AIO::poll_some.
332 - major documentation improvements.
333 - very minor bugfixes.
334 - add aio_nop for dummy requests.
335 - add aio_busy mainly for benchmarking and debugging.
336 - use "fast" mutexes on linux.
337 - use dynamic (and larger) buffers instead of
338 putting them onto the stack.
339 - optimise x86 and amd64 a bit.
340 - better error checking when ENOMEM.
341 - hopefully fix mem and dirp leaks on fork.
342 - warn about broken perl malloc.
343 - compiles on cygwin (but pread is broken on cygwin
344 which is not detected by autoconf, so you have to
345 edit autoconf/config.h yourself to enable emulation).
346
347 1.8 Sat Jun 24 22:20:44 CEST 2006
348 - add and/or document aio_rename, aio_link, aio_symlink and aio_move.
349
350 1.73 Wed Mar 1 22:49:32 CET 2006
351 - codename "jost"
352 - AIX/Solaris(?) aren't being helpful again, hardcode a value
353 for NAME_MAX and drive with your eyes closed (reported by
354 wcooley@nakedape.cc).
355
356 1.72 Thu Feb 2 00:40:44 CET 2006
357 - another minor bug in aio_scandir, again, the callback was called
358 twice when the directory can't be stat'ed.
359
360 1.71 Mon Dec 26 20:20:03 CET 2005
361 - grr, another minor bug in aio_scandir, this time resulting
362 in a runtime error.
363
364 1.7 Mon Dec 26 19:29:48 CET 2005
365 - aio_scandir errornously called callback twice in some cases.
366 - added AnyEvent example.
367
368 1.61 Wed Sep 7 19:40:42 CEST 2005
369 - no longer include $Config{libs}, as distros include too much
370 garbage in there that is not installed on typical systems
371 (for example, debian links perl against -lgdbm and many more
372 libraries despite perl not needing it, slowing down startup and
373 wasting memory).
374
375 1.6 Tue Aug 30 17:44:44 CEST 2005
376 - added aio_readdir, aio_scandir.
377 - added aio_sendfile, including sendfile emulation when sendfile
378 isn't available. Linux, FreeBSD and HP-UX might work (sendfilev
379 support is unavailable on my solaris 8 machine, but preliminary
380 code is there. What's lacking is configury stuff and testing...).
381
382 1.5 Sat Aug 20 02:32:19 CEST 2005
383 - create the aio threads on demand only (good after forking).
384 - somebody nagged about C89 compatibility, so this release should
385 be C89 compatible, but no guarantees for future ones.
386 - abort when the configure script fails.
387
388 1.4 Wed Aug 17 08:07:27 CEST 2005
389 - forgot to recreate the pipe after forking, this could cause
390 deadlocks.
391
392 1.3 Wed Aug 17 07:25:54 CEST 2005
393 - properly propagate exceptions from callbacks, instead of silently
394 eating them.
395 - use a different fork algorithm that avoids recursive callback
396 invocations and reduces fork latency in busy processes.
397 - fix a bug where the buffer scalar in aio_read got assigned the wrong
398 length after reading.
399 - fix a bug where the child would process some outstanding requests
400 from the parent.
401 - make a copy of the callback scalar, to avoid some very uncommon
402 (but valid) usages where the callback scalar changes.
403 - the callback was never freed in aio_read/aio_write.
404 - aio_read/aio_write will now set the readonly flag on the data
405 scalar for better error reporting.
406
407 1.2 Wed Aug 17 01:22:58 CEST 2005
408 - verified on cygwin, linux/amd64+ia32+alpha, solaris.
409 - use SvPVbyte for filenames now. You *need* to encode your strings to
410 the external filename encoding first.
411 - fix the bug where filehandles could leak (again).
412 - clarify freebsd situation: make it work and tell me how, or go away
413 with your underdocumented, broken and outdated OS.
414 - fork'ing should now be officially supported (where linux and
415 posix contradict each other, I followed posix).
416 - only call read() once per poll, not twice (speedup).
417 - new functions: aio_rmdir, aio_symlink.
418 - force callback arguments to be undef or a reference, for better
419 error catching.
420
421 1.1 Sun Aug 7 05:27:23 CEST 2005
422 - added configure script to detect availability of some calls.
423 (imperfect, as we cannot detect things like -lrt due to missing
424 feedback yet).
425 - emulate fdatasync via fsync, pread/pwrite via unsafe read/write
426 and readahead via manual reading on platforms lacking those.
427 - ported t/03_errors.t+framework by Brad Fitzpatrick
428 from Linux::AIO.
429 - removed XOPEN_SOURCE because stupid solaris 9 doesn't
430 compile with it enabled. Probably breaks others. Oh well.
431 - try to be more careful with errno on non-threaded perls.
432 - cygwins perl insisted on a matching open mode when morphing
433 the fd to an fh.
434 - convert sv's to "byte" encoding in aio_read/aio_write. Might
435 do that for pathnames, too, in the future, so make sure you
436 properly encode your pathnames.
437
438 1.0 Fri Jul 22 10:43:30 CEST 2005
439 - aio_open did not reliably deliver (open) filehandles.
440 - all aio_*-functions keep a reference to the filehandle so
441 it doesn't go away while the aio requests is working on it.
442 - disable warnings in AIO.pm.
443
444 0.9 Wed Jul 20 23:55:04 CEST 2005
445 - allow recursive calls to poll_cb, use less locking calls, too.
446 - fix the Gtk2-example in the SYNOPSIS.
447 - use pread/pwrite not pread64/pwrite64. this was simply a leftover
448 from Linux::AIO.
449 (found by compiling on cygwin. Unfortunately, cygwin declares but
450 does not implement pread/pwrite).
451 - only include <sys/syscall.h> on linux.
452
453 0.5 Tue Jul 12 13:03:09 CEST 2005
454 - removed #include <endian.h>, it's not portable, and we don't
455 need it anyway.
456 - link against -lrt, as it might contain goodies such as fdatasync,
457 and often aio_read, which we do not use yet, but it shouldn't hurt.
458
459 0.4 Mon Jul 11 05:28:25 CEST 2005
460 - added IO::AIO::flush, IO::AIO::poll.
461 - make callback argument optional for all calls.
462
463 0.3 Mon Jul 11 01:42:37 CEST 2005
464 - restructured manpage.
465 - added SYNOPSIS with examples for Event, Glib, Tk.
466 - remove explicit context support so I don't have to maintain
467 it for threaded perls (i.e. it should work now :).
468
469 0.2 Sun Jul 10 22:57:12 CEST 2005
470 - return immediately from poll_wait if nreqs==0.
471 - get rid of the request pipe and use faster thread-thread
472 communications for most requests and responses.
473
474 0.1
475 - cloned from Linux::AIO, which is very similar.
476