Revision history for Perl extension EV Changes marked with (libev) are changes in libev, and might have more documentation in the libev Changes file. 4.34 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:: 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