EV
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4.27 Thu Jun 27 22:43:44 CEST 2019
- linux aio backend almost completely rewritten to work around its
limitations.
- linux aio backend now requires linux 4.19+.
- epoll backend now mandatory for linux aio backend.
- fail assertions more aggressively on invalid fd's detected
in the event loop, do not just silently fd_kill in case of
user error.
- ev_io_start/ev_io_stop now verify the watcher fd using
a syscall when EV_VERIFY is 2 or higher.
4.26 (EV only)
- update to libecb 0x00010006.
- new experimental linux aio backend (linux 4.18+).
- removed redundant 0-ptr check in ev_once.
- updated/extended ev_set_allocator documentation.
- replaced EMPTY2 macro by array_needsize_noinit.
- minor code cleanups.
- epoll backend now uses epoll_create1 also after fork.
4.25 Fri Dec 21 07:49:20 CET 2018
- INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
(EV_THROW still provided) and now uses noexcept on C++11 or newer.
- move the darwin select workaround higher in ev.c, as newer versions of
darwin managed to break their broken select even more.
- ANDROID => __ANDROID__ (reported by enh@google.com).
- disable epoll_create1 on android because it has broken header files
and google is unwilling to fix them (reported by enh@google.com).
- avoid a minor compilation warning on win32.
- c++: remove deprecated dynamic throw() specifications.
- c++: improve the (unsupported) bad_loop exception class.
- backport perl ev_periodic example to C, untested.
- update libecb, biggets change is to include a memory fence
in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
- minor autoconf/automake modernisation.
4.24 Wed Dec 28 05:19:55 CET 2016
- bump version to 4.24, as the release tarball inexplicably
didn't have the right version in ev.h, even though the cvs-tagged
version did have the right one (reported by Ales Teska).
4.23 Wed Nov 16 18:23:41 CET 2016
- move some declarations at the beginning to help certain retarded
microsoft compilers, even though their documentation claims
otherwise (reported by Ruslan Osmanov).
4.22 Sun Dec 20 22:11:50 CET 2015
- when epoll detects unremovable fds in the fd set, rebuild
only the epoll descriptor, not the signal pipe, to avoid
SIGPIPE in ev_async_send. This doesn't solve it on fork,
so document what needs to be done in ev_loop_fork
(analyzed by Benjamin Mahler).
- remove superfluous sys/timeb.h include on win32
(analyzed by Jason Madden).
- updated libecb.
4.20 Sat Jun 20 13:01:43 CEST 2015
- prefer noexcept over throw () with C++ 11.
- update ecb.h due to incompatibilities with c11.
- fix a potential aliasing issue when reading and writing
watcher callbacks.
4.19 Thu Sep 25 08:18:25 CEST 2014
- ev.h wasn't valid C++ anymore, which tripped compilers other than
clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
C++ doesn't support typedefs for function pointers fully, so the affected
declarations have to spell out the types each time.
- when not using autoconf, tighten the check for clock_gettime and related
functionality.
4.18 Fri Sep 5 17:55:26 CEST 2014
- events on files were not always generated properly with the
epoll backend (testcase by Assaf Inbal).
- mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
- (ecb) support m68k, m88k and sh (patch by Miod Vallat).
- use a reasonable fallback for EV_NSIG instead of erroring out
when we can't detect the signal set size.
- in the absence of autoconf, do not use the clock syscall
on glibc >= 2.17 (avoids the syscall AND -lrt on systems
doing clock_gettime in userspace).
- ensure extern "C" function pointers are used for externally-visible
loop callbacks (not watcher callbacks yet).
- (ecb) work around memory barriers and volatile apparently both being
broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
4.15 Fri Mar 1 12:04:50 CET 2013
- destroying a non-default loop would stop the global waitpid
watcher (Denis Bilenko).
- queueing pending watchers of higher priority from a watcher now invokes
them in a timely fashion (reported by Denis Bilenko).
- add throw() to all libev functions that cannot throw exceptions, for
further code size decrease when compiling for C++.
- add throw () to callbacks that must not throw exceptions (allocator,
syserr, loop acquire/release, periodic reschedule cbs).
- fix event_base_loop return code, add event_get_callback, event_base_new,
event_base_get_method calls to improve libevent 1.x emulation and add
some libevent 2.x functionality (based on a patch by Jeff Davey).
- add more memory fences to fix a bug reported by Jeff Davey. Better
be overfenced than underprotected.
- ev_run now returns a boolean status (true meaning watchers are
still active).
- ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
libev's EV_ERROR (reported by 191919).
- (ecb) add memory fence support for xlC (Darin McBride).
- (ecb) add memory fence support for gcc-mips (Anton Kirilov).
- (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
- work around some kernels losing file descriptors by leaking
the kqueue descriptor in the child.
- work around linux inotify not reporting IN_ATTRIB changes for directories
in many cases.
- include sys/syscall.h instead of plain syscall.h.
- check for io watcher loops in ev_verify, check for the most
common reported usage bug in ev_io_start.
- choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
- always use WSASend/WSARecv directly on windows, hoping that this
works in all cases (unlike read/write/send/recv...).
- try to detect signals around a fork faster (test program by
Denis Bilenko).
- work around recent glibc versions that leak memory in realloc.
- rename ev::embed::set to ev::embed::set_embed to avoid clashing
the watcher base set (loop) method.
- rewrite the async/signal pipe logic to always keep a valid fd, which
simplifies (and hopefully correctifies :) the race checking
on fork, at the cost of one extra fd.
- add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
inotify-supporting filesystems.
- move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
versions ignore it before
(https://bugzilla.redhat.com/show_bug.cgi?id=908096).
- add some untested android support.
- enum expressions must be of type int (reported by Juan Pablo L).
4.11 Sat Feb 4 19:52:39 CET 2012
- INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
was documented already, but not implemented in the repeating case.
- new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
- fix a race where the workaround against the epoll fork bugs
caused signals to not be handled anymore.
- correct backend_fudge for most backends, and implement a windows
specific workaround to avoid looping because we call both
select and Sleep, both with different time resolutions.
- document range and guarantees of ev_sleep.
- document reasonable ranges for periodics interval and offset.
- rename backend_fudge to backend_mintime to avoid future confusion :)
- change the default periodic reschedule function to hopefully be more
exact and correct even in corner cases or in the far future.
- do not rely on -lm anymore: use it when available but use our
own floor () if it is missing. This should make it easier to embed,
as no external libraries are required.
- strategically import macros from libecb and mark rarely-used functions
as cache-cold (saving almost 2k code size on typical amd64 setups).
- add Symbols.ev and Symbols.event files, that were missing.
- fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
libev/Changes view on Meta::CPAN
- actually 0-initialise struct sigaction when installing signals.
- add section on hibernate and stopped processes to ev_timer docs.
3.6 Tue Apr 28 02:49:30 CEST 2009
- multiple timers becoming ready within an event loop iteration
will be invoked in the "correct" order now.
- do not leave the event loop early just because we have no active
watchers, fixing a problem when embedding a kqueue loop
that has active kernel events but no registered watchers
(reported by blacksand blacksand).
- correctly zero the idx values for arrays, so destroying and
reinitialising the default loop actually works (patch by
Malek Hadj-Ali).
- implement ev_suspend and ev_resume.
- new EV_CUSTOM revents flag for use by applications.
- add documentation section about priorities.
- add a glossary to the documentation.
- extend the ev_fork description slightly.
- optimize a jump out of call_pending.
3.53 Sun Feb 15 02:38:20 CET 2009
- fix a bug in event pipe creation on win32 that would cause a
failed assertion on event loop creation (patch by Malek Hadj-Ali).
- probe for CLOCK_REALTIME support at runtime as well and fall
back to gettimeofday if there is an error, to support older
operating systems with newer header files/libraries.
- prefer gettimeofday over clock_gettime with USE_CLOCK_SYSCALL
(default most everywhere), otherwise not.
3.52 Wed Jan 7 21:43:02 CET 2009
- fix compilation of select backend in fd_set mode when NFDBITS is
missing (to get it to compile on QNX, reported by Rodrigo Campos).
- better select-nfds handling when select backend is in fd_set mode.
- diagnose fd_set overruns when select backend is in fd_set mode.
- due to a thinko, instead of disabling everything but
select on the borked OS X platform, everything but select was
allowed (reported by Emanuele Giaquinta).
- actually verify that local and remote port are matching in
libev's socketpair emulation, which makes denial-of-service
attacks harder (but not impossible - it's windows). Make sure
it even works under vista, which thinks that getpeer/sockname
should return fantasy port numbers.
- include "libev" in all assertion messages for potentially
clearer diagnostics.
- event_get_version (libevent compatibility) returned
a useless string instead of the expected version string
(patch by W.C.A. Wijngaards).
3.51 Wed Dec 24 23:00:11 CET 2008
- fix a bug where an inotify watcher was added twice, causing
freezes on hash collisions (reported and analysed by Graham Leggett).
- new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use
a direct syscall - slower, but no dependency on librt et al.
- assume negative return values != -1 signals success of port_getn
(http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52)
(no known failure reports, but it doesn't hurt).
- fork detection in ev_embed now stops and restarts the watcher
automatically.
- EXPERIMENTAL: default the method to operator () in ev++.h,
to make it nicer to use functors (requested by Benedek László).
- fixed const object callbacks in ev++.h.
- replaced loop_ref argument of watcher.set (loop) by a direct
ev_loop * in ev++.h, to avoid clashes with functor patch.
- do not try to watch the empty string via inotify.
- inotify watchers could be leaked under certain circumstances.
- OS X 10.5 is actually even more broken than earlier versions,
so fall back to select on that piece of garbage.
- fixed some weirdness in the ev_embed documentation.
3.49 Wed Nov 19 11:26:53 CET 2008
- ev_stat watchers will now use inotify as a mere hint on
kernels <2.6.25, or if the filesystem is not in the
"known to be good" list.
- better mingw32 compatibility (it's not as borked as native win32)
(analysed by Roger Pack).
- include stdio.h in the example program, as too many people are
confused by the weird C language otherwise. I guess the next thing
I get told is that the "..." ellipses in the examples don't compile
with their C compiler.
3.48 Thu Oct 30 09:02:37 CET 2008
- further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
backend by assuming the kernel event mask hasn't changed if
ADD fails with EEXIST.
- work around spurious event notification bugs in epoll by using
a 32-bit generation counter. recreate kernel state if we receive
spurious notifications or unwanted events. this is very costly,
but I didn't come up with this horrible design.
- use memset to initialise most arrays now and do away with the
init functions.
- expand time-out strategies into a "Be smart about timeouts" section.
- drop the "struct" from all ev_watcher declarations in the
documentation and did other clarifications (yeah, it was a mistake
to have a struct AND a function called ev_loop).
- fix a bug where ev_default would not initialise the default
loop again after it was destroyed with ev_default_destroy.
- rename syserr to ev_syserr to avoid name clashes when embedding,
do similar changes for event.c.
3.45 Tue Oct 21 21:59:26 CEST 2008
- disable inotify usage on linux <2.6.25, as it is broken
(reported by Yoann Vandoorselaere).
- ev_stat erroneously would try to add inotify watchers
even when inotify wasn't available (this should only
have a performance impact).
- ev_once now passes both timeout and io to the callback if both
occur concurrently, instead of giving timeouts precedence.
- disable EV_USE_INOTIFY when sys/inotify.h is too old.
3.44 Mon Sep 29 05:18:39 CEST 2008
- embed watchers now automatically invoke ev_loop_fork on the
embedded loop when the parent loop forks.
- new function: ev_now_update (loop).
- verify_watcher was not marked static.
- improve the "associating..." manpage section.
- documentation tweaks here and there.
3.43 Sun Jul 6 05:34:41 CEST 2008
- include more include files on windows to get struct _stati64
(reported by Chris Hulbert, but doesn't quite fix his issue).
- add missing #include <io.h> in ev.c on windows (reported by
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