[ViewVC] Annotation of: cvs/cvsroot/EV/Changes

Revision history for Perl extension EV

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

4.35 Fri 19 Sep 2025 18:44:27 CEST
        - work around yet another undocumented newly introduced breakage
          in xsubpp, apparently introduced in perl 5.42. killing off Perl
          one change at a time...

4.34 Sun 08 Oct 2023 23:45:11 CEST
        - the EV::stat->path method errornously freed the result, causing
          corruption (testcase by Carsten Witt).
        - new function EV::Child::reinit.

4.33 Wed Mar 18 13:31:12 CET 2020
        - the enable assertion makefile question failed to enable
          assertions due to a typo.
        - try harder to avoid perl's assert () which does not actually
          behave correctly.
        - updated libecb to make it compile under more windows environments.

4.32 Fri Jan 24 14:21:35 CET 2020
        - (libev) fixed a bug introduced in 4.31 when timerfds and signalfds were
          used at the same time.
        - (libev) 0 is now allowed as requested event mask in io watchers.
        - (libev) once-per-minute wakeups will now be optimized away when
          timerfds are available
        - use the new ev_io_modify in EV::IO->events, instead of the potentially
          slower ev_io_set.
        - add a bunch of mutator methods, mostly untested(!): EV::Timer->repeat,
          EV::Periodic->offset, EV::Periodic->interval,
          EV::Periodic->reschedule_cb.
        - minor optimisations and bugfixes.

4.31 Fri Dec 20 21:57:00 CET 2019
        - (libev) handle backends with minimum wait time a bit better by
          not waiting in the presence of already-expired timers
          (behaviour reported by Felipe Gasper).
        - (libev) use timerfd to detect timejumps.
        - (libev) new loop flag: EVFLAG_NOTIMERFD.

4.30 Fri Nov 22 21:00:00 CET 2019
        - (libev) use a different and hopefully even more portable
          test to disable io_uring when header files are too old,
          by directly testing LINUX_VERSION_CODE.
        - (libev) fix a bug in the io_uring backend that polled the wrong
          backend fd, causing it to not work in many cases.

4.29 Fri Nov 22 15:34:29 CET 2019
        - (libev) add io uring autoconf and non-autoconf detection,
          the latter of which should disable io_uring compilation
          on old systems.

4.28 Tue Nov 19 13:55:39 CET 2019
        - (libev) fix ev_port backend, thanks to David H. Gutteridge for
        - (libev) many bugfixes in linuxaio backend.
        - (libev) experimental io uring interface.
          reminding me to actually release the fix.
        - try to name ev.h more explicitly, to hopefully improve portability.
        - opportunistically round up wait times for poll and epoll backend,
          to avoid unnecessary loop iterations.
        - add build dependency on ev_linuxaio.c.
        - quickly (re)-ported to minix 3.3 before minix crashed again.

4.27 Thu Jun 27 09:39:58 CEST 2019
        - (libev) completely rewritten linuxaio backend, maybe
          usable as a general-use backend.
        - (libev) use more aggressive assertions to catch
          more usage errors.
        - allow users to re-enable assert() in case it is disabled
          by perl (which is typically the case).

4.26 Mon Jun 24 23:39:40 CEST 2019
        - (libev) included experimental linux aio backend.
        - allow the linux aio backend to be used by default
          only when explicitly configured during Makefile.PL time.

4.25 Fri Dec 21 08:04:26 CET 2018
        - (libev) updated to libev 4.25, minor fixes and enhancements.
        - document the requirement to "use EV" when using EV::MakeMaker.
        - only use __register_atfork with glibc and uclibc, as musl
          defines __linux__, but doesn't implement the linux standard
          base ABI, nor makes itself detectable via a macro, both apparently
          by design, winning the "broken by design 2016 award" - well done.
        - correct EV::periodic example 24h after midnight -> one day after
          midnight (reported by Felix Ostmann).

4.22 Sun Dec 20 02:34:39 CET 2015
        - (libev) 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).
        - (libev) remove superfluous sys/timeb.h include on win32
          (analyzed by Jason Madden).
        - updated libecb.

4.21 Mon Jul 13 21:47:33 CEST 2015
        - allow argument in timer->again.
        - document timer->remaining.
        - document default repeat value for timer->set.

4.20 Sat Jun 20 13:07:34 CEST 2015
        - added stability canary support.
        - truly rely on automatic configuration for clock_gettime and others.
          unfortunately, this doesn't help with activeperl and similar perls,
          which define _POSIX_TIMERS without actually implementing any of it.
        - (libev, ecb) make it compile as C++ again.
        - (libev) fix a potential aliasing issue when accessing watcher cbs.

4.18 Sat Sep  6 20:37:23 CEST 2014
        - use slightly better weay to find includes, to support multiarch
          on newer perls.

4.17 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.

4.16 Sat Mar  8 16:49:05 CET 2014
        - make sure EV::CHECK is available at all times.
        - avoid a spurious warning when perl -w overrides "no warnings".
        - use perl's signal implementation on WIN32.
        - ensure extern "C" function pointers are used for externally-visible
          pointers.
        - (libev) mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
        - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
        - (libev) 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).
        - (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 12:15:53 CET 2013
        - (libev) upgrade to 4.15 - too many changes to list.
        - EV::run now returns a boolean.
        - API version 5:1.
        - document that cleanup watchers are not available via perl.
        - cast I32 to int in error message printf.
        - remove dependencies on librt and libpthreads on GNU/Linux.

4.11 Sat Feb  4 19:56:26 CET 2012
        - (libev) implement memory fences for (obsolete) llvm-gcc.

4.10 Thu Jan 19 18:54:23 CET 2012
        - (libev) fix a race where the workaround against the epoll fork
          bugs caused signals to not be handled anymore.
        - (libev) 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.
        - e_new wasn't declared static (causing very minor .so bloat).
        - replace more old api names by new ones.

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
          König).

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_*_collect_interval.
        - 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

Revision:	1.255
Committed:	Fri Sep 19 16:49:02 2025 UTC (12 months, 1 week ago) by root
Branch:	MAIN
CVS Tags:	EV-rel-4_35
Changes since 1.254:	+5 -0 lines
Log Message:	4.35