--- IO-AIO/Changes 2006/10/31 00:32:19 1.105 +++ IO-AIO/Changes 2016/01/18 11:53:09 1.325 @@ -1,8 +1,483 @@ Revision history for IO::AIO -TODO: better autoconf.pm that can return LIBS etc. -TODO: aio_cptree/mvtree/rmtree -TODO: aio_utime, aio_chmod, aio_chown? should simply stat/open first? +TODO: scandir - some dirs mostly contain subdirs - invert logic? +TODO: aio_cptree/mvtree +TODO: reduce condvar fairness: schedule hot-cache-threads first? +TODO: vmsplice? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/) +TODO: aio_fcntl, at least for file-locking +TODO: aio_mincore? +TODO: getxattr etc.? +TODO: F_DUPFD_CLOEXEC +TODO: emulation for splice? +TODO: eio_mmap|mlock|munmap|splice... +TODO: syncfs/sync windows: +TODO: F_SETPIPE_SZ, F_GETPIPE_SZ +TODO: posix_fallocate when flags=0 +http://stackoverflow.com/questions/65170/how-to-get-name-associated-with-open-handle/5286888#5286888 +http://blogs.msdn.com/b/adioltean/archive/2005/04/16/408947.aspx +http://msdn.microsoft.com/en-us/library/aa366789%28v=vs.85%29.aspx +http://msdn.microsoft.com/en-us/library/windows/desktop/aa366789%28v=vs.85%29.aspx +http://msdn.microsoft.com/en-us/library/windows/desktop/aa364425%28v=vs.85%29.aspx +http://msdn.microsoft.com/en-us/library/windows/desktop/aa364963%28v=vs.85%29.aspx +http://msdn.microsoft.com/en-us/library/windows/desktop/aa364996%28v=vs.85%29.aspx +http://msdn.microsoft.com/en-us/library/windows/desktop/aa364994%28v=vs.85%29.aspx +TODO: extra socket/tcp constants &c? +TODO: getrandom, GRND_NONBLOCK, GRND_NONBLOCK +TODO: 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); +TODO: O_TMPFILE +TODO: FALLOC_FL_COLLAPSE_RANGE +TODO: FALLOC_FL_ZERO_RANGE +TODO: renameat RENAME_EXCHANGE, RENAME_NOREPLACE, RENAME_EXCHANGE +TODO: fcntl F_GETLKP/F_SETLKP/F_SETLKPW, http://lwn.net/Articles/586904/ +TODO: flink + AT_EMPTY_PATH +TODO: name_to_handle_At + open_by_handle_at = clone fds + +TODO: rewrite rmtree et al. to support working directories (also speed them up) +TODO: maybe IO::AIO leaks fds when requests are cancelled? maybe initialise result to -1? +TODO: aio_wd should use O_PATH on linux, due to lacking O_SEARCH (http://comments.gmane.org/gmane.linux.file-systems/33611) + http://www.openwall.com/lists/musl/2013/02/23/4 + +4.33 Mon Jan 18 12:50:10 CET 2016 + - add IO::AIO::pipe2 function. + - added support for FALLOC_FL_COLLAPSE_RANGE and FALLOC_FL_ZERO_RANGE + constants. + - added support for O_TMPFILE and O_PATH constants. + - added support for MAP_FIXED, MAP_GROWSDOWN,MAP_32BIT, MAP_HUGETLB, MAP_STACK + consdtants, whether they can be sensibly used or not. + - use NO_INIT where applicable. + - update libecb. + - added stability canary support. + - updated linux super magic table to 4.3.3. + +4.32 Wed Feb 11 20:32:11 CET 2015 + - replace off_t by STRLEN where appropriate, should not result in + user-visible changes. + - update ecb.h for C11 compatibility. + +4.31 Tue Jun 3 03:29:27 CEST 2014 + - work around more 5.20 bugs. backwards compatibility my ass. + +4.3 Fri Apr 11 06:22:38 CEST 2014 + - perl5porters broke Async::Interrupt, BDB, EV, IO::AIO, OpenCL + without warning by switching the meaning of USE_SOCKETS_AS_HANDLES + in 5.18. What's so attractive about giving a shit about backwards + compatibility - I will never understand. + +4.2 Sat Jan 25 01:13:14 CET 2014 + - aio_group could corrupt memory because it didn't restore + the stack after req_submit. + - be more careful on (e.g. permission) errors in bin/treescan. + - work around changes in ExtUtils::MakeMaker. + - (libeio) implement aio_realpath for win32. + - (xthread) work around compile time bugs in ptw32. + - added IO::AIO::pipesize. + - (libecb) insignificant update. + +4.19 Sun Jan 6 12:47:26 CET 2013 + - avoid endless loop in fiemap with some XFS files. + - in aio_rename and aio_rmdir, specialcase the case of [$wd, "."] + and call rename/rmdir instead of renameat/unlinkat. + +4.18 Thu Oct 11 07:01:26 CEST 2012 + - fix unintended xthread_create by intentionalising it :) + +4.17 Thu Oct 11 05:19:47 CEST 2012 + - rename aio_fallocate to aio_allocate, to match documentation. + - add list of linux fsid values to aio_statvfs docs. + - work around a bug in btrfs' FIEMAP ioctl implementation. + - work around AIX bug: statvfs.f_fsid is a struct, not unsigned long + as per unix spec. + +4.16 Tue Aug 14 05:39:03 CEST 2012 + - aio_statvfs was wromgly marked for wd emulation, causing + it to malfunction for paths. + - fix a crash in aio_fiemap, when used on ranges without any + extents. + - work around linux kernel bug (at least in 3.2): kernel might + trash fiemap input arguments. + - work around linux kernel bug (at least in 3.2): kernel does not + set FIEMAP_EXTENT_LAST on last segment. + - work around linux kernel bug (at least in 3.2): kernel silently + truncates segment count if a file. + - make fh argument of IO::AIO::mmap optional, also add mmap/munmap + to quick overview. + - splice can corrupt data. + - (libeio) remove pread/pwrite emulation. + - do not grow mmaped scalars in aio_read. + - add FALLOC_FL_PUNCH_HOLE and document fallocate. + - provide pread/pwrite for win32, making it link again on native win32. + +4.15 Tue Apr 10 06:59:00 CEST 2012 + - always include linux/types.h for fiemap, for compatibility to + ancient systems (Paul Howarth). + - experimental support for IO::AIO::splice and ::tee (no aio_...). + - provide SEEK_HOLE and SEEK_DATA, if available. + - work around (again!) an immensely stupid bug in RHEL, defining + autoconf macros in linux system headers (analysed by Paul Howarth). + +4.14 Sat Apr 7 02:45:18 CEST 2012 + - fix stat structure usage on windows, which caused bogus stat results. + - (libeio) make readahead emulation behave more like actual readahead by never failing. + - new request aio_seek. + - new request aio_fiemap. + - autogenerate the #ifdef/#define 0 blocks for symbols we export. + +4.12 Fri Dec 30 08:51:25 CET 2011 + - realpath would return a random value if the name was too long, + instead of -1. + - port to c89. + +4.11 Mon Oct 10 00:24:11 CEST 2011 + - libeio didn't compile on !linux (Paul Howarth). + +4.1 Sun Oct 9 10:24:11 CEST 2011 + - IO::AIO did access uninitialised memory on unsuccessful stats. + - (libeio) added syncfs syscall wrapper. + - (libeio) set thread name on linux (ps -L/Hcx, top, gdb). + - (libeio) support multiple indepenent working directories. + - applied speling corrections by Nicholas Bamber. + - tune treescan #threads and #outstanding requests a bit. + - reduce the number of file descriptors in use at any one time + in treescan, to avoid running out of them (and using too much ram). + - take advantage of working directoriy abstractions + in aio_scandir and treescan. + - reduce compiled size by ~10% by not inlining some key functionality. + - added --progress switch to treescan. + +4.0 Mon Jul 18 05:01:10 CEST 2011 + - INCOMPATIBLE CHANGE: fork is no longer supported (indeed, it never was), + see FORK BEHAVIOUR in manpage for details. + - passes testsuite on win32 now and may actually work + (activestate 5.10.1 / MSVC6, YMMV). + - (libeio) fix a deadlock where a wakeup signal could be missed when + a timeout occured at the same time. + - (libeio) added realpath. + - (libeio) added fallocate. + - (libeio) disabling sendfile on darwin unfortunately broke the emulation. + - (libeio) do not acquire any locks when forking. + - (libeio) use fewer time() syscalls when waiting for new requests. + +3.93 Wed Jun 29 23:44:18 CEST 2011 + - ECB.H WAS MISSING. + +3.92 Wed Jun 29 14:45:41 CEST 2011 + - ecb.h was missing. + +3.91 Wed Jun 29 13:24:42 CEST 2011 + - (libeio) work around a Linux (and likely FreeBSD and other + kernels) bug where sendfile would not transfer all the requested + bytes on large transfers, using a heuristic. + - buggy sendfile caused aio_move/copy to sometimes fail for big + files (fortunately it checks that the whole file has been + transferred...) + - use libecb for higher performance and higher portability. + - (libeio) disable sendfile on darwin, it's too broken. + - disable fork tests on !linux, as only linux supports mixing + pthread and fork in perl. + - document the fact that fork doesn't work anymore when using + this module, on anything !GNU/Linux. + - increase timeout in t/04_fork.t, as too many CPAN-tester setups + run on a 0.1MHz cpu. Or so. + +3.9 Fri May 27 02:43:47 CEST 2011 + - (libeio) fix memory corruption in aio_readdirx for the flags + combination READDIR_STAT_ORDER | READDIR_DIRS_FIRST. + - add lots of newer POSIX and GNU/Linux-specific open + flags. + +3.8 Sun Mar 27 12:25:33 CEST 2011 + - use nonstandard but maybe-working-on-bsd fork technique. + - support a max_idle value of 0. + - support setting of idle timeout value (IO::AIO::idle_timeout). + +3.72 Fri Feb 11 04:25:38 CET 2011 + - use _POSIX_MEMLOCK_RANGE to detect mlock/munlock. + - aio_mknod always used a dev_t value of 0. + - new treescan option: --grep. + - add more S_IF macros, and major/minor/makedev "macros". + +3.71 Thu Dec 30 08:18:46 CET 2010 + - the numerical result value passed to callbacks did not stringify + correctly, due to internal reuse and failure to reset the sv flags. + - actually test for posix_[mf]advise, as at least uClibc defines + _POSIX_ADVISORY_INFO without actually having any of the required + funcitonality. ugh. + +3.7 Mon Nov 1 23:00:34 CET 2010 + - implement/add madvise, mmap, munmap, aio_mlockall, munlockall, + aio_mlock, munlock, msync and mtouch to @EXPORT_OK. + - document the sad state of affairs w.r.t. pthread on many bsds. + - do not enable mmap on systems without _POSIX_MAPPED_FILES + (openbsd 4.8). + - do not leak memory in IO::AIO::mmap when the scalar already + had string-data. + - add O_RDWR, O_APPEND and O_EXCL symbols and semi-document + them. + - cache the result IV, for a minor speedup in the common case. + - croak when an mmapped-scalar changes location, to detect + user-errors better. + - fix aio_readlink prototype. + +3.65 Wed Mar 31 02:45:05 CEST 2010 + - actually use PATH_MAX instead of NAME_MAX for readlink, as to not + cut off long pathnames in aio_readlink (based on patch by + Rasmus Andersson). + - a double fork partially killed the event pipe (great testcase + by dormando). affects IO::AIO, BDB and Async::Interrupt. + - suck steve's dick and rename our symbols to avoid colliding + with nonstandard identifier spam on the broken os x pseudo-os. + affects IO::AIO and BDB. + +3.6 Mon Jan 11 00:43:39 CET 2010 + - (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. @@ -10,7 +485,7 @@ - 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 unicode-encoded, + - 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