--- libev/Changes 2008/04/02 10:55:39 1.18 +++ libev/Changes 2009/02/15 01:44:40 1.101 @@ -1,6 +1,173 @@ Revision history for libev, a high-performance and full-featured event loop. -3.2 +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 errornously 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 in ev.c on windows (reported by + Matt Tolton). + +3.42 Tue Jun 17 12:12:07 CEST 2008 + - work around yet another windows bug: FD_SET actually adds fd's + multiple times to the fd_*SET*, despite official MSN docs claiming + otherwise. Reported and well-analysed by Matt Tolton. + - define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile + (reported any analysed by Chris Hulbert). + - fix a bug in ev_ebadf (this function is only used to catch + programming errors in the libev user). reported by Matt Tolton. + - fix a bug in fd_intern on win32 (could lead to compile errors + under some circumstances, but would work correctly if it compiles). + reported by Matt Tolton. + - (try to) work around missing lstat on windows. + - pass in the write fd set as except fd set under windows. windows + is so uncontrollably lame that it requires this. this means that + switching off oobinline is not supported (but tcp/ip doesn't + have oob, so that would be stupid anyways. + - use posix module symbol to auto-detect monotonic clock presence + and some other default values. + +3.41 Fri May 23 18:42:54 CEST 2008 + - work around an obscure bug in winsocket select: if you + provide only empty fd sets then select returns WSAEINVAL. how sucky. + - improve timer scheduling stability and reduce use of time_epsilon. + - use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces + codesize and makes for better cache-efficiency. + - use 3-based 4-heap for !EV_MINIMAL. this makes better use + of cpu cache lines and gives better growth behaviour than + 2-based heaps. + - cache timestamp within heap for !EV_MINIMAL, to avoid random + memory accesses. + - document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT. + - fix a potential aliasing issue in ev_timer_again. + - add/document ev_periodic_at, retract direct access to ->at. + - improve ev_stat docs. + - add portability requirements section. + - fix manpage headers etc. + - normalise WSA error codes to lower range on windows. + - add consistency check code that can be called automatically + or on demand to check for internal structures (ev_loop_verify). + +3.31 Wed Apr 16 20:45:04 CEST 2008 + - added last minute fix for ev_poll.c by Brandon Black. + +3.3 Wed Apr 16 19:04:10 CEST 2008 + - event_base_loopexit should return 0 on success + (W.C.A. Wijngaards). + - added linux eventfd support. + - try to autodetect epoll and inotify support + by libc header version if not using autoconf. + - new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_. + - declare functions defined in ev.h as inline if + C99 or gcc are available. + - enable inlining with gcc versions 2 and 3. + - work around broken poll implementations potentially + not clearing revents field in ev_poll (Brandon Black) + (no such systems are known at this time). + - work around a bug in realloc on openbsd and darwin, + also makes the errornous valgrind complaints + go away (noted by various people). + - fix ev_async_pending, add c++ wrapper for ev_async + (based on patch sent by Johannes Deisenhofer. + - add sensible set method to ev::embed. + - made integer constants type int in ev.h. + +3.2 Wed Apr 2 17:11:19 CEST 2008 - fix a 64 bit overflow issue in the select backend, by using fd_mask instead of int for the mask. - rename internal sighandler to avoid clash with very old perls.