revision history for libev

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