EV - Changes

Revision history for Perl extension EV

Changes marked with (libev) are changes in libev, and have more documentation in the libev Changes file.

4.03 Tue Jan 11 14:51:05 CET 2011

do not avoid the clock_gettime call on GNU/Linux anymore, as EV links against -lpthread anyways - as a result, EV might now take advantage of fast userspace clock_gettime implementations, but also links against -lrt.
(libev) lots of event port bug workarounds.
(libev) officially support files in I/O watchers.
(libev) new function ev_feed_signal.
fix documentation parts still refering to the 3.x API.

4.02 Thu Dec 30 08:27:41 CET 2010

the revents argument did not stringify correctly, as only the numeric value was updated, while the string value was kept from previous invocations.

4.01 Sun Dec 5 12:42:13 CET 2010

fully support EV_COMPAT3=0.
default_fork was stupidly defined as inline.
ask cpan to upgrade AnyEvent if < 5.29.
support EV_EXTRA_DEFS during configuration.
support -DEV_NO_LOOPS for snakker build.

4.00 Mon Oct 25 13:30:09 CEST 2010

many API changes, see the manual.
(libev) lots and lots of bugfixes, see the ev documentation.
fix a bug where inotify usage would parse the same event multiple times, causing various forms of breakage.
greatly reduce stack usage for inotify (8kb to <0.5kb).
expose ev_depth and ev_verify via the XS API.
implement ev_cleanup watchers.
(libev) ev_embed_stop did not correctly stop the watcher.
(libev) disable poll backend on AIX.
(libev) rename EV_TIMEOUT to EV_TIMER.
(libev) add section on accept() problems to the manpage.
(libev) no child watchers on win32.
make code more aliasing compliant, in case perl is ever translated to C.
document the EV::CHECK runtime unavailability.
ported to minix 3.1.7.

3.9 Thu Dec 31 07:59:59 CET 2009

disable t/07 under automatic testing.
increase t/09 timeouts as netbsd has horribly broken select/kevent that usually sleep >>0.6s instead of 0.3.
add constants EV::FLAG_NOSIGFD, EV::FLAG_NOINOTIFY and EV::BACKEND_ALL.
(libev) signalfd is no longer used by default.
(libev) backport inotify code to C89.
(libev) inotify file descriptors could leak into child processes.
(libev) ev_stat watchers could keep an errornous extra ref on the loop.
(libev) take advantage of inotify_init1, if available.
(libev) the signal handling pipe wasn't always initialised under windows.
changed minimum glibc requirement from glibc 2.9 to 2.7, for signalfd.
(libev) only replace ev_stat.prev when we detect an actual difference.

3.8 Sun Aug 9 15:30:10 CEST 2009

implement $loop->signal/signal_ns.
(libev) incompatible change: do not necessarily reset signal handler to SIG_DFL when a sighandler is stopped.
(libev) ev_default_destroy did not properly free or zero some members, potentially causing crashes and memory corruption on repated ev_default_destroy/ev_default_loop calls.
(libev) take advantage of signalfd on GNU/Linux systems.
(libev) document that the signal mask might be in an unspecified state when using libev's signal handling.
(libev) take advantage of some GNU/Linux calls to set cloexec/nonblock on fd creation, to avoid race conditions.
implement internal glue code to interface more efficiently with AnyEvent.

3.7 Fri Jul 17 16:49:16 CEST 2009

add EV::loop_verify and EV::loop_depth.
use output filehandle for i/o watchers waiting for EV_WRITE, otherwise input filehandle.
use common schmorp.h header.
add EV::Timer->remaining.
allow for subclassing of EV::Loop (see the exciting EV::Loop::Async module for an example).
added EV::invoke_pending and EV::pending_count.
(libev) ev_unloop and ev_loop wrongly used a global variable to exit loops, instead of using a per-loop variable.
(libev) the ev_set_io_collect_interval interpretation has changed.
add new functionality: EV::invoke_pending, EV::pending_count.
add $timer->remaining.
add EV::loop_depth.
(libev) calling unloop in fork/prepare watchers will no longer poll for new events.
(libev) use GetSystemTimeAsFileTime instead of _timeb on windows, for slightly higher accuracy.
(libev) actually 0-initialise struct sigaction when installing signals.

3.6 Tue Apr 28 02:50:37 CEST 2009

keepalive(0) could decrease the refcount of the loop permanently.
add ev_suspend/ev_resume, also make ev_now_update accessible via the XS API.
most EV::<eventtype> constants were missing and have been added :/.
add EV::VERSION_MAJOR/VERSION_MINOR constants.
(libev) multiple timers becoming ready within an event loop iteration will be invoked in the "correct" order now.
(libev) 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).
(libev) correctly zero the idx values for arrays, so destroying and reinitialising the default loop actually works (patch by Malek Hadj-Ali).
(libev) new EV::CUSTOM revents flag for use by applications.
(libev) add documentation section about priorites.
(libev) add a glossary to the dcoumentation.
(libev) extend the ev_fork description slightly.
(libev) optimize a jump out of call_pending.
t/03_keepalive could fail when there was no actual error.

3.53 Sun Feb 15 02:38:20 CET 2009

(libev) on win32, the event loop creation could randomly fail due to an initialised variable having the wrong value.
(libev) 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 by default.

3.52 Wed Jan 7 21:46:14 CET 2009

(libev) fix some issues in the select backend when in fd_set mode.
(libev) 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).
(libev) 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.

3.51 Wed Dec 24 23:01:59 CET 2008

do not cache the arguments passed to callbacks if the refcount indicates that the callback has stolen them.
(libev) try to avoid librt on GNU/Linux.
(libev) check port_getn return value dfferently, might potentially avoid problems.
(libev) fix a bug with stat watchers possibly causing freezes.
(libev) work around OS X 10.5 breaking poll, now select is the only viable choice left on that pile of garbage.
play tester whore: disable some tests that typically fail only on cpan tester machines.

3.49 Wed Nov 19 11:26:53 CET 2008

fix typos in manpage (Alex Efros).
increase timing even further, for the ever-overloaded cpan-tester machines, and to the detriment of everybody else who wants a fast make test.
possible 5.6 compatibility.
(libev) use inotify even on buggy kernels, but don't rely on it.
(libev) use inotify only as an added hint on network filesystems.

3.48 Thu Oct 30 09:09:48 CET 2008

(libev) use a generation counter to detect spurious epoll events and recreate the kernel in such a case (sorry, it's slow, but I didn't design epoll...).
(libev) optimise away an EPOLL_CTL_ADD/MOD combo in the epoll backend in some cases.
(libev) use memset to initialise most arrays now and do away with the init functions.
speed up event callback invocation further (~15%), by not creating the object reference each time.
EV::sleep was documented, but not implemented. fun.

3.45 Tue Oct 21 22:20:39 CEST 2008

(libev) disable inotify usage on linux <2.6.25 (kernel bug).
(libev) ev_embed will now automatically follow fork.
(libev) ev_once will now pass both io and timeout events to the callback when both happen concurrently, instead of giving one precedence.
install C library documentation as EV::libev manpage (sorry, oesi).
(libev) fix a minor performance bug in ev_stat handling.

3.44 Mon Sep 29 05:16:31 CEST 2008

(libev) add EV::now_update and $loop->now_update.

3.431 Sun Jul 13 00:19:02 CEST 2008

made the EV::embed callback optional again. reported by Vladimir Timofeev.

3.43 Tue Jul 8 20:56:31 CEST 2008

disabled warnings in EV.pm, the CHECK issue is now understood and harmless.

3.42 Mon May 26 07:36:46 CEST 2008

(libev) work around another bug in windows perls and windows itself: failed connects do NOT set read or write flags in select, but this version of libev will.

3.41 Thu May 22 01:39:40 CEST 2008

(libev) fix many heap-related bugs (timers, periodics).
(libev) improve timing stability of timers and periodics.
expose ev_loop_verify to perl code.
clarify documentation for periodic reschedule callbacks.
verify that the passed callback argument is indeed a code reference, for earlier error reporting and a nice calling speed increase (as well as saving memory).

3.4 Tue May 20 21:51:55 CEST 2008

(libev) work around both a windows bug and a bug in perl's select on windows when not waiting for any file descriptors.
bundle ev.pod into the tarball, just to increase its size (and for the poor internetless person).

3.33 Sun May 18 12:43:04 CEST 2008

(libev) use numerous enhancements such as a more cache-friendly 4-heap and heap index caching for timers.
remove undocumented ev_timer->at accessor.

3.31 Wed Apr 16 20:48:59 CEST 2008

(libev) post-last-minute fix for ev_poll.c problem.

3.3 Wed Apr 16 19:04:47 CEST 2008

(libev) linux eventfd support.
(libev) inline more with C99 compilers.
(libev) work around a number of bugs in valgrind.
(libev) work around broken realloc on openbsd and darwin.
added example to EV::MakeMaker manpage.
add async_pending method.

3.2 Wed Apr 2 17:08:16 CEST 2008

"ported" again to the Microsoft "C" language.
relax testsuite timing for the benefit of freebsd users once more.
fix EVAPI's ev_time and ev_sleep macros.
(libev) fix select backend on 64 bit architetcures.
(libev) ev_loop flags are now local to each invocation.

3.1 Sat Mar 8 11:41:14 CET 2008

add ev_sync_ and ev_fork_ to EVAPI.h.
provide EV::Embed->sweep method.
new watcher type: async (not very useful in perl).

3.0 Mon Jan 28 13:23:11 CET 2008

upgrade to libev-3.0.
change child handler to incorporate tracing flag.

2.01 Mon Dec 31 01:59:19 CET 2007

found a minor problem in the testsuite that is only caught by new Test::Harness versions (reported by Andreas KÃ¶nig).

2.0 Sat Dec 22 17:47:03 CET 2007

no longer force kqueue when enabled, enable it on more systems (as its now by default not used on most).
expose fork watchers.
switch to libev's MULTIPLICITY API.
use a slightly different include file name strategy.
get rid of (unused) libevent emulation.
5% watcher management speedup due to callback optimisation when inline closures are used, 5% slowdown due to multiplicity.
very minimal support for dynamic event loops and embed watchers.
fix name of prepare start/stop methods.
create and export EV::sleep and EV::set_*collectinterval.
fix typos in manpage (Alex Efros).

1.86 Tue Dec 18 02:36:57 CET 2007

add periodic->at methods.

1.85 Fri Dec 14 20:32:40 CET 2007

further optimise epoll backend by adding a heuristic that avoids EPOLL_CTL_DEL calls if possible.
EV::signal->start was not async-signal safe.
optimise start/stop when the fd hasn't changed.

1.8 Tue Dec 11 22:17:46 CET 2007

API version 3:0.
reduced fudge factor to zero for select, poll, epoll and kqueue: your system better be posix-compliant even in its extensions :->
improve long-term numerical stability in periodic watchers by introducing a separate offset value instead of reusing at.
recalculate real/monotonic clocks before blocking fully to avoid blocking for longer than necessary.
fix bugs in the heap functions. this rarely lead to illegal heap orderings.

1.72 Sat Dec 8 15:31:26 CET 2007

add dummy loop arguments to some EVAPI functions so that clients can use EV_A and EV_DEFAULT.
expose ev_clear_pending.
renamed trigger to invoke.

1.71 Fri Dec 7 19:10:24 CET 2007

changed/implemented idle watcher priority.
allow out-of-range priorities to be set.
fix ->priority to actually work on started watchers.
improved testsuite.

1.6 Wed Dec 5 15:06:20 CET 2007

add a missing SPAGAIN.
ripped out EV::DNS, use EV::ADNS for a better backend.
make ev_time callable from EVAPI.h.
add EV::loop_count.
some space optimisations.

1.5 Wed Nov 28 20:19:09 CET 2007

add inotify backend.
make testsuite even less sensible to timing issues, add more stat tests.
add ->attr, ->prev, ->stat calls to stat watcher.

1.4 Tue Nov 27 17:35:27 CET 2007

work around a linux 2.4 kernel bug in child handlers.
implement stat watcher interface.
implement fork watcher interface.
io->set did not keep the fh alive.
actively check signal numbers/names to be valid.
cleanups, minor fixes, new bugs.
work around windows bugs in the testsuite.

1.3 Sun Nov 25 10:46:57 CET 2007

stopping idle/check/prepare watchers could cause data corruption.
implement and document EV::once.
improved documentation, verify that netbsd indeed has the only working kqueue implementation (out of darwin, freebsd, netbsd and openbsd). Praise them!
fix the data method so it might work.
expose ev_ref/ev_unref to the C API.
expose ref/unref in form of the ->keepalive method to perl.
minor bugfixes and portability fixes.

1.2 Thu Nov 22 05:44:09 CET 2007

disable kqueue by default on !netbsd, as its broken on freebsd, darwin and openbsd and thus almost everywhere.
add some allowance in t/01_timer.t for the uneven monotonic vs. realtime clock tick on at least freebsd.
add -lsocket -lnsl on solaris in case the perl guy forgot to configure them.

1.1 Wed Nov 21 06:08:48 CET 2007

improved timer test to include periodics and withstand small timing variations.
many minor tweaks to libev.

1.0 Fri Nov 16 14:51:59 CET 2007

require AnyEvent update if AnyEvent is installed.
add solaris 10 port-based backend.
add child_ns and fix check_ns.
treat yes/no as enforcement, not as hint, when configuring, documentation update (reported by Andy Grundman).

0.9 Wed Nov 14 22:24:49 CET 2007

changed LIBEV_METHODS to LIBEV_FLAGS and the way this is used inside libev.
many, many bugfixes.
add unloop constants.
add timer test.
ev_loop will now terminate immediately when no watchers are active.

0.8 Mon Nov 12 02:28:46 CET 2007

fix "testsuite" again :().
fix check/idle/prepare/child watcher stop.
enourmously many fixes.
rewritten select backend (mostly for win32).
cache socket handles on win32.
provide considerably finer control over configuration.

0.7 Fri Nov 9 20:37:58 CET 2007

move AnyEvent adaptor into the AnyEvent module.
use private copy of evdns.[ch].
many minor fixes.

0.6 Thu Nov 8 18:23:43 CET 2007

(libev) better native win32 support.
fix idle watchers.
implement and document periodic reschedule callbacks.
do not run dns test on !linux platforms (actually to exclude win32).
fix (unused in EV :) poll backend.

0.51 Tue Nov 6 19:50:22 CET 2007

fix kqueue/poll compilation issue.
work around design issues in kqueue.
enable kqueue by default, seems to work.

0.5 Tue Nov 6 17:37:44 CET 2007

add signal and pid mutators.
add rstatus/rpid accessors.
updated libev (lower cost for clock monotonic).
support event priorities.
try to find SIG_SIZE on perls that don't have it (Slaven Rezic).
improved signal handling, fixed child watchers.
experimentally add kqueue backend, completely untested.
ported to cygwin and native win32.

0.1 Thu Nov 1 18:29:22 CET 2007

replaced libevent by libev (total rewrite).
many bugfixes w.r.t. libevent.
new watcher types: periodic, check, prepare, child, idle.
performance optimisations.
added interactive configuration.
added fork support.

0.03 Mon Oct 29 20:52:50 CET 2007

add timed_io convenience constructors.
improve documentation.
support signal names in addition to signal numbers.
support signal anyevent watchers.
vastly improved testsuite (its all relative :).
add EV::MakeMaker, beginning of C-level API.
force strings to byte form.

0.02 Sun Oct 28 07:40:21 CET 2007

call $EV::DIED in case a callback throws an exception.
add const char * to typemap for possible 5.6 compatibility.

0.01 Sat Oct 27 19:10:18 CEST 2007

initial release.

0.00 Fri Oct 26 11:12:57 CEST 2007

original version; cloned from JSON::XS