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Comparing IO-AIO/Changes (file contents):
Revision 1.125 by root, Fri Jun 1 14:40:01 2007 UTC vs.
Revision 1.323 by root, Thu Jun 25 15:20:11 2015 UTC

1Revision history for IO::AIO 1Revision history for IO::AIO
2 2
3TODO: better autoconf.pm that can return LIBS etc. 3TODO: scandir - some dirs mostly contain subdirs - invert logic?
4TODO: aio_cptree/mvtree 4TODO: aio_cptree/mvtree
5TODO: reduce condvar fairness: schedule hot-cache-threads first? 5TODO: reduce condvar fairness: schedule hot-cache-threads first?
6TODO: fix setsig
7TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) 6TODO: 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
11TODO: emulation for splice?
12TODO: eio_mmap|mlock|munmap|splice...
13TODO: syncfs/sync windows:
14TODO: F_SETPIPE_SZ, F_GETPIPE_SZ
15TODO: posix_fallocate when flags=0
16http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888
17http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx
18http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx
19http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx
20http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx
21http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx
22http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx
23http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx
24TODO: extra socket/tcp constants &c?
25TODO: getrandom, GRND_NONBLOCK, GRND_NONBLOCK
26TODO: http://lwn.net/Articles/593918/ SHMEM_SET_SEALS, SHMEM_GET_SEALS, SEAL_SHRINK, SEAL_GROW, SEAL_WRITE, int memfd_create(const char *name, u64 size, u64 flags);, MFD_CLOEXEC, int fd = open("/tmp", O_RDWR | O_TMPFILE | O_EXCL, S_IRWXU);
27TODO: O_TMPFILE
28TODO: FALLOC_FL_COLLAPSE_RANGE
29TODO: FALLOC_FL_ZERO_RANGE
30TODO: renameat RENAME_EXCHANGE, RENAME_NOREPLACE, RENAME_EXCHANGE
31TODO: fcntl F_GETLKP/F_SETLKP/F_SETLKPW, http://lwn.net/Articles/586904/
32TODO: flink + AT_EMPTY_PATH
33TODO: name_to_handle_At + open_by_handle_at = clone fds
8 34
92.4 35TODO: rewrite rmtree et al. to support working directories (also speed them up)
10 - fix aio_busy w.r.t. fractional delays. 36TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1?
11 - add aio_chmod, aio_chown, aio_utime (linux successfully demonstrated 37
38 - add IO::AIO::pipe2 function.
39 - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE
40 constants.
41 - added support for O_TMPFILE and O_PATH constants.
42 - use NO_INIT where applicable.
43 - update libecb.
44 - added stability canary support.
45
464.32 Wed Feb 11 20:32:11 CET 2015
47 - replace off_t by STRLEN where appropriate, should not result in
48 user-visible changes.
49 - update ecb.h for C11 compatibility.
50
514.31 Tue Jun 3 03:29:27 CEST 2014
52 - work around more 5.20 bugs. backwards compatibility my ass.
53
544.3 Fri Apr 11 06:22:38 CEST 2014
55 - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL
56 without warning by switching the meaning of USE_SOCKETS_AS_HANDLES
57 in 5.18. What's so attractive about giving a shit about backwards
58 compatibility - I will never understand.
59
604.2 Sat Jan 25 01:13:14 CET 2014
61 - aio_group could corrupt memory because it didn't restore
62 the stack after req_submit.
63 - be more careful on (e.g. permission) errors in bin/treescan.
64 - work around changes in ExtUtils::MakeMaker.
65 - (libeio) implement aio_realpath for win32.
66 - (xthread) work around compile time bugs in ptw32.
67 - added IO::AIO::pipesize.
68 - (libecb) insignificant update.
69
704.19 Sun Jan 6 12:47:26 CET 2013
71 - avoid endless loop in fiemap with some XFS files.
72 - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."]
73 and call rename/rmdir instead of renameat/unlinkat.
74
754.18 Thu Oct 11 07:01:26 CEST 2012
76 - fix unintended xthread_create by intentionalising it :)
77
784.17 Thu Oct 11 05:19:47 CEST 2012
79 - rename aio_fallocate to aio_allocate, to match documentation.
80 - add list of linux fsid values to aio_statvfs docs.
81 - work around a bug in btrfs' FIEMAP ioctl implementation.
82 - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long
83 as per unix spec.
84
854.16 Tue Aug 14 05:39:03 CEST 2012
86 - aio_statvfs was wromgly marked for wd emulation, causing
87 it to malfunction for paths.
88 - fix a crash in aio_fiemap, when used on ranges without any
89 extents.
90 - work around linux kernel bug (at least in 3.2): kernel might
91 trash fiemap input arguments.
92 - work around linux kernel bug (at least in 3.2): kernel does not
93 set FIEMAP_EXTENT_LAST on last segment.
94 - work around linux kernel bug (at least in 3.2): kernel silently
95 truncates segment count if a file.
96 - make fh argument of IO::AIO::mmap optional, also add mmap/munmap
97 to quick overview.
98 - splice can corrupt data.
99 - (libeio) remove pread/pwrite emulation.
100 - do not grow mmaped scalars in aio_read.
101 - add FALLOC_FL_PUNCH_HOLE and document fallocate.
102 - provide pread/pwrite for win32, making it link again on native win32.
103
1044.15 Tue Apr 10 06:59:00 CEST 2012
105 - always include linux/types.h for fiemap, for compatibility to
106 ancient systems (Paul Howarth).
107 - experimental support for IO::AIO::splice and ::tee (no aio_...).
108 - provide SEEK_HOLE and SEEK_DATA, if available.
109 - work around (again!) an immensely stupid bug in RHEL, defining
110 autoconf macros in linux system headers (analysed by Paul Howarth).
111
1124.14 Sat Apr 7 02:45:18 CEST 2012
113 - fix stat structure usage on windows, which caused bogus stat results.
114 - (libeio) make readahead emulation behave more like actual readahead by never failing.
115 - new request aio_seek.
116 - new request aio_fiemap.
117 - autogenerate the #ifdef/#define 0 blocks for symbols we export.
118
1194.12 Fri Dec 30 08:51:25 CET 2011
120 - realpath would return a random value if the name was too long,
121 instead of -1.
122 - port to c89.
123
1244.11 Mon Oct 10 00:24:11 CEST 2011
125 - libeio didn't compile on !linux (Paul Howarth).
126
1274.1 Sun Oct 9 10:24:11 CEST 2011
128 - IO::AIO did access uninitialised memory on unsuccessful stats.
129 - (libeio) added syncfs syscall wrapper.
130 - (libeio) set thread name on linux (ps -L/Hcx, top, gdb).
131 - (libeio) support multiple indepenent working directories.
132 - applied speling corrections by Nicholas Bamber.
133 - tune treescan #threads and #outstanding requests a bit.
134 - reduce the number of file descriptors in use at any one time
135 in treescan, to avoid running out of them (and using too much ram).
136 - take advantage of working directoriy abstractions
137 in aio_scandir and treescan.
138 - reduce compiled size by ~10% by not inlining some key functionality.
139 - added --progress switch to treescan.
140
1414.0 Mon Jul 18 05:01:10 CEST 2011
142 - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was),
143 see FORK BEHAVIOUR in manpage for details.
144 - passes testsuite on win32 now and may actually work
145 (activestate 5.10.1 / MSVC6, YMMV).
146 - (libeio) fix a deadlock where a wakeup signal could be missed when
147 a timeout occured at the same time.
148 - (libeio) added realpath.
149 - (libeio) added fallocate.
150 - (libeio) disabling sendfile on darwin unfortunately broke the emulation.
151 - (libeio) do not acquire any locks when forking.
152 - (libeio) use fewer time() syscalls when waiting for new requests.
153
1543.93 Wed Jun 29 23:44:18 CEST 2011
155 - ECB.H WAS MISSING.
156
1573.92 Wed Jun 29 14:45:41 CEST 2011
158 - ecb.h was missing.
159
1603.91 Wed Jun 29 13:24:42 CEST 2011
161 - (libeio) work around a Linux (and likely FreeBSD and other
162 kernels) bug where sendfile would not transfer all the requested
163 bytes on large transfers, using a heuristic.
164 - buggy sendfile caused aio_move/copy to sometimes fail for big
165 files (fortunately it checks that the whole file has been
166 transferred...)
167 - use libecb for higher performance and higher portability.
168 - (libeio) disable sendfile on darwin, it's too broken.
169 - disable fork tests on !linux, as only linux supports mixing
170 pthread and fork in perl.
171 - document the fact that fork doesn't work anymore when using
172 this module, on anything !GNU/Linux.
173 - increase timeout in t/04_fork.t, as too many CPAN-tester setups
174 run on a 0.1MHz cpu. Or so.
175
1763.9 Fri May 27 02:43:47 CEST 2011
177 - (libeio) fix memory corruption in aio_readdirx for the flags
178 combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST.
179 - add lots of newer POSIX and GNU/Linux-specific open
180 flags.
181
1823.8 Sun Mar 27 12:25:33 CEST 2011
183 - use nonstandard but maybe-working-on-bsd fork technique.
184 - support a max_idle value of 0.
185 - support setting of idle timeout value (IO::AIO::idle_timeout).
186
1873.72 Fri Feb 11 04:25:38 CET 2011
188 - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock.
189 - aio_mknod always used a dev_t value of 0.
190 - new treescan option: --grep.
191 - add more S_IF macros, and major/minor/makedev "macros".
192
1933.71 Thu Dec 30 08:18:46 CET 2010
194 - the numerical result value passed to callbacks did not stringify
195 correctly, due to internal reuse and failure to reset the sv flags.
196 - actually test for posix_[mf]advise, as at least uClibc defines
197 _POSIX_ADVISORY_INFO without actually having any of the required
198 funcitonality. ugh.
199
2003.7 Mon Nov 1 23:00:34 CET 2010
201 - implement/add madvise, mmap, munmap, aio_mlockall, munlockall,
202 aio_mlock, munlock, msync and mtouch to @EXPORT_OK.
203 - document the sad state of affairs w.r.t. pthread on many bsds.
204 - do not enable mmap on systems without _POSIX_MAPPED_FILES
205 (openbsd 4.8).
206 - do not leak memory in IO::AIO::mmap when the scalar already
207 had string-data.
208 - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document
209 them.
210 - cache the result IV, for a minor speedup in the common case.
211 - croak when an mmapped-scalar changes location, to detect
212 user-errors better.
213 - fix aio_readlink prototype.
214
2153.65 Wed Mar 31 02:45:05 CEST 2010
216 - actually use PATH_MAX instead of NAME_MAX for readlink, as to not
217 cut off long pathnames in aio_readlink (based on patch by
218 Rasmus Andersson).
219 - a double fork partially killed the event pipe (great testcase
220 by dormando). affects IO::AIO, BDB and Async::Interrupt.
221 - suck steve's dick and rename our symbols to avoid colliding
222 with nonstandard identifier spam on the broken os x pseudo-os.
223 affects IO::AIO and BDB.
224
2253.6 Mon Jan 11 00:43:39 CET 2010
226 - (libeio) more fixes for the freebsd/apple sendfile - broken by
227 manpage standards, but apparently correct accoridng to actual
228 kernel sources.
229 - add IO::AIO::mmap/munmap support.
230 - add IO::AIO::m(un)lockall support.
231 - clean up manpage.
232
2333.5 Thu Jan 7 21:25:04 CET 2010
234 - (liebio) fix freebsd sendfile (Vanilla Hsu).
235 - (libeio) also fix darwin sendfile that suffered from a similar bug.
236 - add aio_statvfs as interface to statvfs/fstatvfs.
237 - work around buggy symlink() on cygwin in the testsuite.
238 - wtf. freebsd-8.0 actually passes the testsuite! I knew
239 they could implement fork and semaphores one day! cheers!
240
2413.4 Sat Jan 2 15:13:04 CET 2010
242 - (libeio) max_poll_time was not properly converted to ticks.
243 - clarify cancel_subs description.
244 - IO::AIO::sendfile did not actually return the return value
245 from the sendfile call.
246 - implement aio_msync, aio_mtouch.
247 - (libeio) tentatively support darwin in sendfile.
248
2493.31 Thu Nov 12 02:14:29 CET 2009
250 - fix result status documentation of aio_copy, aio_move.
251 - speed up object creation considerably by avoiding
252 hash lookups.
253
2543.3 Wed Aug 5 13:52:58 CEST 2009
255 - use common::sense.
256 - use common schmorp.h header.
257 - allow integers (file descriptors) in addition to file handles.
258 - take advantage of linux' eventfd (but it seems slower on smp?).
259 - use poll not select on posix platforms.
260
2613.261 Wed Jul 1 10:11:51 CEST 2009
262 - more 0S X workarounds (patch by Tokuhiro Matsuno).
263
2643.26 Tue Jun 30 09:33:26 CEST 2009
265 - 0S X of course claims to be posix 2008 but lacks posix_fadvise.
266 try to work around this horribly broken OS in a somewhat hackish
267 way. might help other os's too.
268
2693.25 Sat Jun 27 05:18:26 CEST 2009
270 - added IO::AIO::fadvise and IO::AIO::sendfile.
271 - (libeio) replaced quicksort+insertion sort by a tuned radix
272 sort + insertion sort, resulting in comparable runtime (usually
273 faster) to the old version, but without any ill side effects on
274 degenerated (for quicksort) data.
275 - (libeio) correctly sort dirs by inodes if we have perfect type
276 knowledge and DIRS_FIRST is used.
277 - (libeio) internally the wrong DT_* constants were used, but no
278 known system has differing EIO_DT_*/DT_* values, so not an issue.
279 - removed a (harmless) assert that was left over on the code
280 but should not have been.
281 - use more correct types (change IO length from IV to VAL64,
282 which makes a difference on systems without 64 bit perls).
283
2843.23 Sat Jun 13 16:57:58 CEST 2009
285 - fix off-by-one bug in aio_readdir that was introduced in the
286 rushed 3.22 release.
287
2883.22 Sat Jun 13 15:32:40 CEST 2009
289 - speed up readdirx sort algorithm slightly.
290 - bin/treescan was missing from distro tarball.
291
2923.21 Fri Jun 12 18:45:53 CEST 2009
293 - new options --dirs and --files for treescan.
294 - install bin/treescan by default.
295 - (libeio) aio_readdir can now be cancelled while executing.
296 - fix a printf format string for 64 bit systems (could lead
297 to problems on big endian 64 bit systems).
298 - do not use qsort() but our own algorithm: glibc initialises
299 the whole locale and I/O subsystem inside qsort, causing
300 a stack overflow on 32 bit machines. The new sort uses much less
301 stack and is more than twice as fast in typical situations.
302
3033.2 Sun Jun 7 20:30:05 CEST 2009
304 - (libeio) pwrite emulation was even more flawed than intended and did
305 not restore the file offset.
306 - add aio_readdirx, which can return inode and filetype and sort
307 the names in various ways.
308 - unfortunately, utime, chmod, chown on an open file that has just
309 been written can easily block, which caused aio_copy to block the
310 process. no more!
311 - no longer rely on dst path in aio_copy when futime is available.
312
3133.19 Tue Apr 21 22:05:21 CEST 2009
314 - more perl 5.10 workarounds for aio_read and write.
315 - aio_write no longer modifies the sv (if possible).
316 - aio_read now works correctly with magic values.
317
3183.18 Sun Apr 19 21:17:32 CEST 2009
319 - better diagnostics when some aio_* functions get passed an illegal fh.
320 - try to avoid crashes due to incompatible 5.10 API changes. grmbl.
321
3223.17 Thu Nov 20 08:45:36 CET 2008
323 - (libeio) added aio_sync_file_range (untested).
324 - add aio_busy to @IO::AIO::AIO_REQ.
325
3263.16 Wed Oct 22 18:28:01 CEST 2008
327 - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical
328 part to improve portability to perl 5.8 (reported by szymon).
329
3303.15 Mon Oct 13 00:39:55 CEST 2008
331 - automatic removal of feeders was broken.
332 - (libeio) use a more robust method to detect whether a feeder
333 has added something to the group or not.
334
3353.1 Thu Oct 2 13:34:40 CEST 2008
336 - pre-deref the passed callback object, for increased speed
337 and decreased memory usage.
338 - call on_next_submit callback even for aio_group - impact unknown,
339 but seems more correct.
340 - $req->cb now returns the original callback.
341 - (libeio) pass EIO_GROUP/aio_group requests through the queue without
342 requiring a thread switch.
343 - (libeio) status code of aio_futime and aio_utime was always passed 0.
344 - do some other ยต-optimisations.
345
3463.07 Sat Aug 2 16:06:13 CEST 2008
347 - do not include LIBS in autoconf tests.
348
3493.06 Tue Jul 15 12:41:32 CEST 2008
350 - move preadwritelock definition before it's first reference,
351 to make it compile again on broken platforms (they still exist)
352 or badly cofngiured perls (redhat...), reported by Rob Bloodgood.
353
3543.05 Thu Jun 19 23:23:52 CEST 2008
355 - work around perl overriding readdir etc. with thread-unsafe
356 (sic!) versions.
357
3583.04 Wed Jun 18 01:35:38 CEST 2008
359 - (libeio) fix eio_mknod, which confused it's arguments.
360 - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this
361 is stupid.
362 - (libeio) fix eio__readahead prototype, patch by Jost Krieger.
363 - (libeio) fix a bug that could potentially cause IO::AIO
364 not to get initialised properly.
365
3663.03 Thu May 29 05:33:30 CEST 2008
367 - (libeio) correctly call pthread_attr_destroy ().
368 - (libeio) work around broken bsd headers once more.
369 - reduce shared library size again by not including wrappers.
370 - max_outstanding could cause poll to enter a busy-waiting loop.
371 - document the new IO::AIO::poll_cb result value.
372
3733.02 Mon May 12 02:32:02 CEST 2008
374 - fix a memory leak on aio_readlink.
375 - bring back working fchmod.
376 - nop and busy now set result to 0.
377 - set errno to ENOMEM when allocation fails.
378
3793.01 Sun May 11 03:07:03 CEST 2008
380 - (libeio) make it compile on systems without readahead or readdir_r.
381 - (libeio) improve configure check for readahead availability.
382 - do not try to link against -lrt.
383 - use a separate configure script for IO::AIO (not the libeio one).
384
3853.0 Sun May 11 00:57:14 CEST 2008
386 - added bin/treescan to the distribution.
387 - switched to using libeio.
388 - LOTS OF INCOMPATIBLE CHANGES:
389 - remove signal functionality, it is not worth the effort.
390 - max_outstanding no longer returns the previous number of requests.
391 - poll_cb no longer returns number of requests.
392
3932.62 Sat Apr 26 13:59:33 CEST 2008
394 - port to solaris perls configured for old posix
395 (analysed by Jost Krieger).
396 - keep a reference to the perl filehandle object in aio_close,
397 so it doesn't get closed prematurely, leading to ugly races.
398
3992.61 Wed Apr 16 18:45:02 CEST 2008
400 - fix treescan output duplication and improve output ordering.
401 also display files given on the commandline.
402 - use a different algorithm for aio_close that is faster
403 and probably has even lower chances of blocking.
404 - do our own stack memory management for threads - linux
405 allocates outrageous amounts of VM (not so bad unless you
406 use mlockall...), which severely limits the number of threads
407 on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN
408 and 4096 * sizeof (long) (usually this is 16..64k).
409
4102.6 Sun Mar 30 08:28:11 CEST 2008
411 - added aio_sync.
412 - added aio_pathsync.
413 - fix prototypes of (void) functions.
414
4152.51 Sat Oct 6 16:04:54 CEST 2007
416 - perlio isn't generally threadsafe, so aio_close could not work reliably.
417 aio_close now tries a safe hack that might not be that asynchronous
418 (see the manpage for details).
419 - discard callback return values as to not grow the stack endlessly
420 when poll_cb handles many requests without returning.
421 - minor code cleanups.
422
4232.5 Thu Oct 4 14:49:08 CEST 2007
424 - replaced _fd2fh with faster xs code.
425 - aio_close will now try to do "the right thing" and thus might
426 work sensibly for the very first time.
427
4282.41 Mon Sep 24 21:28:21 CEST 2007
429 - after fork, invest some work to make sure that the poll_fileno
430 stays stable (by dup2'ing the new fd over the old one), to make
431 it easier for programs/libs that don't control their forking
432 behaviour and cannot recreate their watchers.
433
4342.4 Sun Aug 5 18:44:22 CEST 2007
435 - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux
12 that you can block on futimes...). 436 successfully demonstrated that you can block on futimes...).
13 - allow undef as fileoffset for aio_read/write and use read/write(2) 437 - allow undef as fileoffset for aio_read/write and use read/write(2)
14 internally (useful for sockets or O_APPEND handles). 438 internally (useful for sockets or O_APPEND handles).
439 - allow undef for length in aio_write.
440 - negative dataoffsets work as expected now in aio_read/aio_write.
15 - use NV instead of UV for 32 bit perls and file offsets, as NVs 441 - use NV instead of UV for 32 bit perls and file offsets, as NVs
16 have a larger range then. 442 have a larger range then.
17 - shared code between BDB and IO::AIO. 443 - shared code between BDB and IO::AIO.
444 - aio_busy was completely broken. now fixed.
445 - readahead emulation now returns something.
18 - correctly set errno to ENOSYS on unimplemented functions 446 - correctly set errno to ENOSYS on unimplemented functions
19 (should never happen, though). 447 (should never happen, though).
448 - large changes to make it partially compile and run on win32,
449 but win32 lacks too much functionality, and perl overrides way
450 too many functions with crashing versions.
20 451
212.33 Tue Jan 23 23:55:41 CET 2007 4522.33 Tue Jan 23 23:55:41 CET 2007
22 - fix install path (Andreas J. Koenig). 453 - fix install path (Andreas J. Koenig).
23 454
242.32 Mon Jan 22 16:56:23 CET 2007 4552.32 Mon Jan 22 16:56:23 CET 2007

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