--- IO-AIO/Changes 2006/10/28 01:41:05 1.97 +++ IO-AIO/Changes 2010/01/10 23:10:59 1.223 @@ -1,15 +1,281 @@ Revision history for IO::AIO TODO: better autoconf.pm that can return LIBS etc. -TODO: aio_cp/mvtree/rmtree -TODO: aio_utime, aio_chmod, aio_chown? +TODO: aio_cptree/mvtree +TODO: reduce condvar fairness: schedule hot-cache-threads first? +TODO: splice/tee/vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) +TODO: aio_fcntl, at least for file-locking +TODO: fallocate, if it wouldn't be so useless. +TODO: aio_mincore? -TODO: expose max_idle - - doc update. + - (libeio) more fixes for the freebsd/apple sendfile - broken by + manpage standards, but apparently correct accoridng to actual + kernel sources. + - add IO::AIO::mmap/munmap support. + - add IO::AIO::m(un)lockall support. + - clean up manpage. + +3.5 Thu Jan 7 21:25:04 CET 2010 + - (liebio) fix freebsd sendfile (Vanilla Hsu). + - (libeio) also fix darwin sendfile that suffered from a similar bug. + - add aio_statvfs as interface to statvfs/fstatvfs. + - work around buggy symlink() on cygwin in the testsuite. + - wtf. freebsd-8.0 actually passes the testsuite! I knew + they could implement fork and semaphores one day! cheers! + +3.4 Sat Jan 2 15:13:04 CET 2010 + - (libeio) max_poll_time was not properly converted to ticks. + - clarify cancel_subs description. + - IO::AIO::sendfile did not actually return the return value + from the sendfile call. + - implement aio_msync, aio_mtouch. + - (libeio) tentatively support darwin in sendfile. + +3.31 Thu Nov 12 02:14:29 CET 2009 + - fix result status documentation of aio_copy, aio_move. + - speed up object creation considerably by avoiding + hash lookups. + +3.3 Wed Aug 5 13:52:58 CEST 2009 + - use common::sense. + - use common schmorp.h header. + - allow integers (file descriptors) in addition to file handles. + - take advantage of linux' eventfd (but it seems slower on smp?). + - use poll not select on posix platforms. + +3.261 Wed Jul 1 10:11:51 CEST 2009 + - more 0S X workarounds (patch by Tokuhiro Matsuno). + +3.26 Tue Jun 30 09:33:26 CEST 2009 + - 0S X of course claims to be posix 2008 but lacks posix_fadvise. + try to work around this horribly broken OS in a somewhat hackish + way. might help other os's too. + +3.25 Sat Jun 27 05:18:26 CEST 2009 + - added IO::AIO::fadvise and IO::AIO::sendfile. + - (libeio) replaced quicksort+insertion sort by a tuned radix + sort + insertion sort, resulting in comparable runtime (usually + faster) to the old version, but without any ill side effects on + degenerated (for quicksort) data. + - (libeio) correctly sort dirs by inodes if we have perfect type + knowledge and DIRS_FIRST is used. + - (libeio) internally the wrong DT_* constants were used, but no + known system has differing EIO_DT_*/DT_* values, so not an issue. + - removed a (harmless) assert that was left over on the code + but should not have been. + - use more correct types (change IO length from IV to VAL64, + which makes a difference on systems without 64 bit perls). + +3.23 Sat Jun 13 16:57:58 CEST 2009 + - fix off-by-one bug in aio_readdir that was introduced in the + rushed 3.22 release. + +3.22 Sat Jun 13 15:32:40 CEST 2009 + - speed up readdirx sort algorithm slightly. + - bin/treescan was missing from distro tarball. + +3.21 Fri Jun 12 18:45:53 CEST 2009 + - new options --dirs and --files for treescan. + - install bin/treescan by default. + - (libeio) aio_readdir can now be cancelled while executing. + - fix a printf format string for 64 bit systems (could lead + to problems on big endian 64 bit systems). + - do not use qsort() but our own algorithm: glibc initialises + the whole locale and I/O subsystem inside qsort, causing + a stack overflow on 32 bit machines. The new sort uses much less + stack and is more than twice as fast in typical situations. + +3.2 Sun Jun 7 20:30:05 CEST 2009 + - (libeio) pwrite emulation was even more flawed than intended and did + not restore the file offset. + - add aio_readdirx, which can return inode and filetype and sort + the names in various ways. + - unfortunately, utime, chmod, chown on an open file that has just + been written can easily block, which caused aio_copy to block the + process. no more! + - no longer rely on dst path in aio_copy when futime is available. + +3.19 Tue Apr 21 22:05:21 CEST 2009 + - more perl 5.10 workarounds for aio_read and write. + - aio_write no longer modifies the sv (if possible). + - aio_read now works correctly with magic values. + +3.18 Sun Apr 19 21:17:32 CEST 2009 + - better diagnostics when some aio_* functions get passed an illegal fh. + - try to avoid crashes due to incompatible 5.10 API changes. grmbl. + +3.17 Thu Nov 20 08:45:36 CET 2008 + - (libeio) added aio_sync_file_range (untested). + - add aio_busy to @IO::AIO::AIO_REQ. + +3.16 Wed Oct 22 18:28:01 CEST 2008 + - use SvREFCNT_inc instead of SvREFCNT_inc_NN in a non-speed critical + part to improve portability to perl 5.8 (reported by szymon). + +3.15 Mon Oct 13 00:39:55 CEST 2008 + - automatic removal of feeders was broken. + - (libeio) use a more robust method to detect whether a feeder + has added something to the group or not. + +3.1 Thu Oct 2 13:34:40 CEST 2008 + - pre-deref the passed callback object, for increased speed + and decreased memory usage. + - call on_next_submit callback even for aio_group - impact unknown, + but seems more correct. + - $req->cb now returns the original callback. + - (libeio) pass EIO_GROUP/aio_group requests through the queue without + requiring a thread switch. + - (libeio) status code of aio_futime and aio_utime was always passed 0. + - do some other ยต-optimisations. + +3.07 Sat Aug 2 16:06:13 CEST 2008 + - do not include LIBS in autoconf tests. + +3.06 Tue Jul 15 12:41:32 CEST 2008 + - move preadwritelock definition before it's first reference, + to make it compile again on broken platforms (they still exist) + or badly cofngiured perls (redhat...), reported by Rob Bloodgood. + +3.05 Thu Jun 19 23:23:52 CEST 2008 + - work around perl overriding readdir etc. with thread-unsafe + (sic!) versions. + +3.04 Wed Jun 18 01:35:38 CEST 2008 + - (libeio) fix eio_mknod, which confused it's arguments. + - (libeio) do not use readdir_r, as Ulrich Drepper pointed out that this + is stupid. + - (libeio) fix eio__readahead prototype, patch by Jost Krieger. + - (libeio) fix a bug that could potentially cause IO::AIO + not to get initialised properly. + +3.03 Thu May 29 05:33:30 CEST 2008 + - (libeio) correctly call pthread_attr_destroy (). + - (libeio) work around broken bsd headers once more. + - reduce shared library size again by not including wrappers. + - max_outstanding could cause poll to enter a busy-waiting loop. + - document the new IO::AIO::poll_cb result value. + +3.02 Mon May 12 02:32:02 CEST 2008 + - fix a memory leak on aio_readlink. + - bring back working fchmod. + - nop and busy now set result to 0. + - set errno to ENOMEM when allocation fails. + +3.01 Sun May 11 03:07:03 CEST 2008 + - (libeio) make it compile on systems without readahead or readdir_r. + - (libeio) improve configure check for readahead availability. + - do not try to link against -lrt. + - use a separate configure script for IO::AIO (not the libeio one). + +3.0 Sun May 11 00:57:14 CEST 2008 + - added bin/treescan to the distribution. + - switched to using libeio. + - LOTS OF INCOMPATIBLE CHANGES: + - remove signal functionality, it is not worth the effort. + - max_outstanding no longer returns the previous number of requests. + - poll_cb no longer returns number of requests. + +2.62 Sat Apr 26 13:59:33 CEST 2008 + - port to solaris perls configured for old posix + (analysed by Jost Krieger). + - keep a reference to the perl filehandle object in aio_close, + so it doesn't get closed prematurely, leading to ugly races. + +2.61 Wed Apr 16 18:45:02 CEST 2008 + - fix treescan output duplication and improve output ordering. + also display files given on the commandline. + - use a different algorithm for aio_close that is faster + and probably has even lower chances of blocking. + - do our own stack memory management for threads - linux + allocates outrageous amounts of VM (not so bad unless you + use mlockall...), which severely limits the number of threads + on 32-bit arches: stack size is the larger of PTHREAD_STACK_MIN + and 4096 * sizeof (long) (usually this is 16..64k). + +2.6 Sun Mar 30 08:28:11 CEST 2008 + - added aio_sync. + - added aio_pathsync. + - fix prototypes of (void) functions. + +2.51 Sat Oct 6 16:04:54 CEST 2007 + - perlio isn't generally threadsafe, so aio_close could not work reliably. + aio_close now tries a safe hack that might not be that asynchronous + (see the manpage for details). + - discard callback return values as to not grow the stack endlessly + when poll_cb handles many requests without returning. + - minor code cleanups. + +2.5 Thu Oct 4 14:49:08 CEST 2007 + - replaced _fd2fh with faster xs code. + - aio_close will now try to do "the right thing" and thus might + work sensibly for the very first time. + +2.41 Mon Sep 24 21:28:21 CEST 2007 + - after fork, invest some work to make sure that the poll_fileno + stays stable (by dup2'ing the new fd over the old one), to make + it easier for programs/libs that don't control their forking + behaviour and cannot recreate their watchers. + +2.4 Sun Aug 5 18:44:22 CEST 2007 + - add aio_truncate, aio_chmod, aio_chown, aio_utime (linux + successfully demonstrated that you can block on futimes...). + - allow undef as fileoffset for aio_read/write and use read/write(2) + internally (useful for sockets or O_APPEND handles). + - allow undef for length in aio_write. + - negative dataoffsets work as expected now in aio_read/aio_write. + - use NV instead of UV for 32 bit perls and file offsets, as NVs + have a larger range then. + - shared code between BDB and IO::AIO. + - aio_busy was completely broken. now fixed. + - readahead emulation now returns something. + - correctly set errno to ENOSYS on unimplemented functions + (should never happen, though). + - large changes to make it partially compile and run on win32, + but win32 lacks too much functionality, and perl overrides way + too many functions with crashing versions. + +2.33 Tue Jan 23 23:55:41 CET 2007 + - fix install path (Andreas J. Koenig). + +2.32 Mon Jan 22 16:56:23 CET 2007 + - added aio_rmtree. + - wow, aio_mkdir was missing. + - aio_load did return undef on error, not -1. + - use prefixexp not prefix in autoconf.pm + (suggested by ... rt.cpan.org unreachable). + - avoid installing autoconf.pm. + +2.31 Sat Jan 6 03:46:02 CET 2007 + - added aio_load. + +2.3 Sat Dec 23 05:48:07 CET 2006 + - fix off-by-one bug in aio_read, causing memory corruption + or crashes. + +2.21 Fri Dec 22 05:03:38 CET 2006 + - minor doc updates. + - minor cleanups. + - IO::AIO::poll returns request count. + - undocumented and unfinished async-signal-reporting. + +2.2 Tue Oct 31 00:31:00 CET 2006 + - minor doc updates. + - added aio_readlink. + - properly zero-terminate aio_read buffer. + - fix aio_read/write with nonzero dataoffset. + - reduced size of aio request structure. + - better diagnostics when pathnames etc. are not byte-encoded; + do not leak request in that case, either. + +2.1 Sun Oct 29 02:01:57 CET 2006 + - INCOMPATIBLE CHANGE: replace IO::AIO::poll_some by + IO::AIO::max_poll_reqs and IO::AIO::max_poll_time. - fix a bug in aio_move where it would fail everytime it would have to copy files manually. + - doc updates. - start threads only on (very low) demand. - end superfluous threads automatically after 10s idling. + - add IO::AIO::max_idle to control this. - some tuning applied to random places. - add aio_mknod.