--- IO-AIO/Changes 2006/10/26 14:35:35 1.90 +++ IO-AIO/Changes 2008/04/16 16:45:18 1.140 @@ -1,13 +1,115 @@ Revision history for IO::AIO TODO: better autoconf.pm that can return LIBS etc. +TODO: aio_cptree/mvtree +TODO: reduce condvar fairness: schedule hot-cache-threads first? +TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) +TODO: aio_fcntl, at least for file-locking + +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. -2.0 +2.0 Thu Oct 26 18:27:58 CEST 2006 - minor incompatibility: max_outstanding semantics have changed. - major rewrite, consider all functionality EXPERIMENTAL. - aio requests can be cancelled. - callbacks can be (re-)set later. - - aio requests can have choose 9 priorities. + - aio requests can choose between 9 priorities. - add aio_group: aio requests can be grouped into composite requests. - generator interface for groups. @@ -16,13 +118,13 @@ - very minor bugfixes. - add aio_nop for dummy requests. - add aio_busy mainly for benchmarking and debugging. - - deprecated max_outstanding. - use "fast" mutexes on linux. - use dynamic (and larger) buffers instead of putting them onto the stack. - optimise x86 and amd64 a bit. - better error checking when ENOMEM. - hopefully fix mem and dirp leaks on fork. + - warn about broken perl malloc. - compiles on cygwin (but pread is broken on cygwin which is not detected by autoconf, so you have to edit autoconf/config.h yourself to enable emulation). @@ -69,7 +171,7 @@ - abort when the configure script fails. 1.4 Wed Aug 17 08:07:27 CEST 2005 - - forget to recreate the pipe after forking, this could cause + - forgot to recreate the pipe after forking, this could cause deadlocks. 1.3 Wed Aug 17 07:25:54 CEST 2005