[ViewVC] Annotation of: cvs/libev/Changes

Revision history for libev, a high-performance and full-featured event loop.

        - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.

4.00 Mon Oct 25 12:32:12 CEST 2010
        - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
        - ev_embed_stop did not correctly stop the watcher (very good
          testcase by Vladimir Timofeev).
        - ev_run will now always update the current loop time - it erroneously
          didn't when idle watchers were active, causing timers not to fire.
        - fix a bug where a timeout of zero caused the timer not to fire
          in the libevent emulation (testcase by Péter Szabó).
        - applied win32 fixes by Michael Lenaghan (also James Mansion).
        - replace EV_MINIMAL by EV_FEATURES.
        - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
          seems the former is *much* faster than the latter.
        - linux kernel version detection (for inotify bug workarounds)
          did not work properly.
        - reduce the number of spurious wake-ups with the ports backend.
        - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
        - do async init within ev_async_start, not ev_async_set, which avoids
          an API quirk where the set function must be called in the C++ API
          even when there is nothing to set.
        - add (undocumented) EV_ENABLE when adding events with kqueue,
          this might help with OS X, which seems to need it despite documenting
          not to need it (helpfully pointed out by Tilghman Lesher).
        - do not use poll by default on freebsd, it's broken (what isn't
          on freebsd...).
        - allow to embed epoll on kernels >= 2.6.32.
        - configure now prepends -O3, not appends it, so one can still
          override it.
        - ev.pod: greatly expanded the portability section, added a porting
          section, a description of watcher states and made lots of minor fixes.
        - disable poll backend on AIX, the poll header spams the namespace
          and it's not worth working around dead platforms (reported
          and analyzed by Aivars Kalvans).
        - improve header file compatibility of the standalone eventfd code
          in an obscure case.
        - implement EV_AVOID_STDIO option.
        - do not use sscanf to parse linux version number (smaller, faster,
          no sscanf dependency).
        - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
        - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
        - add section on accept() problems to the manpage.
        - rename EV_TIMEOUT to EV_TIMER.
        - rename ev_loop_count/depth/verify/loop/unloop.
        - remove ev_default_destroy and ev_default_fork.
        - switch to two-digit minor version.
        - work around an apparent gentoo compiler bug.
        - define _DARWIN_UNLIMITED_SELECT. just so.
        - use enum instead of #define for most constants.
        - improve compatibility to older C++ compilers.
        - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
          default arguments when compiled as C++.
        - enable automake dependency tracking.
        - ev_loop_new no longer leaks memory when loop creation failed.
        - new ev_cleanup watcher type.

3.9  Thu Dec 31 07:59:59 CET 2009
        - signalfd is no longer used by default and has to be requested
          explicitly - this means that easy to catch bugs become hard to
          catch race conditions, but the users have spoken.
        - point out the unspecified signal mask in the documentation, and
          that this is a race condition regardless of EV_SIGNALFD.
        - backport inotify code to C89.
        - inotify file descriptors could leak into child processes.
        - ev_stat watchers could keep an errornous extra ref on the loop,
          preventing exit when unregistering all watchers (testcases
          provided by ry@tinyclouds.org).
        - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
          symbols to make it easier for apps to do their own fd management.
        - support EV_IDLE_ENABLE being disabled in ev++.h
          (patch by Didier Spezia).
        - take advantage of inotify_init1, if available, to set cloexec/nonblock
          on fd creation, to avoid races.
        - the signal handling pipe wasn't always initialised under windows
          (analysed by lekma).
        - changed minimum glibc requirement from glibc 2.9 to 2.7, for
          signalfd.
        - add missing string.h include (Denis F. Latypoff).
        - only replace ev_stat.prev when we detect an actual difference,
          so prev is (almost) always different to attr. this might
          have caused the problems with 04_stat.t.
        - add ev::timer->remaining () method to C++ API.

3.8  Sun Aug  9 14:30:45 CEST 2009
        - incompatible change: do not necessarily reset signal handler
          to SIG_DFL when a sighandler is stopped.
        - ev_default_destroy did not properly free or zero some members,
          potentially causing crashes and memory corruption on repeated
          ev_default_destroy/ev_default_loop calls.
        - take advantage of signalfd on GNU/Linux systems.
        - document that the signal mask might be in an unspecified
          state when using libev's signal handling.
        - take advantage of some GNU/Linux calls to set cloexec/nonblock
          on fd creation, to avoid race conditions.

3.7  Fri Jul 17 16:36:32 CEST 2009
        - ev_unloop and ev_loop wrongly used a global variable to exit loops,
          instead of using a per-loop variable (bug caught by accident...).
        - the ev_set_io_collect_interval interpretation has changed.
        - add new functionality: ev_set_userdata, ev_userdata,
          ev_set_invoke_pending_cb, ev_set_loop_release_cb,
          ev_invoke_pending, ev_pending_count, together with a long example
          about thread locking.
        - add ev_timer_remaining (as requested by Denis F. Latypoff).
        - add ev_loop_depth.
        - calling ev_unloop in fork/prepare watchers will no longer poll
          for new events.
        - Denis F. Latypoff corrected many typos in example code snippets.
        - honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double-
          check that the syscall number is available before trying to
          use it (reported by ry@tinyclouds).
        - use GetSystemTimeAsFileTime instead of _timeb on windows, for
          slightly higher accuracy.
        - properly declare ev_loop_verify and ev_now_update even when
          !EV_MULTIPLICITY.
        - do not compile in any priority code when EV_MAXPRI == EV_MINPRI.
        - support EV_MINIMAL==2 for a reduced API.
        - actually 0-initialise struct sigaction when installing signals.
        - add section on hibernate and stopped processes to ev_timer docs.

3.6  Tue Apr 28 02:49:30 CEST 2009
        - multiple timers becoming ready within an event loop iteration
          will be invoked in the "correct" order now.
        - 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).
        - correctly zero the idx values for arrays, so destroying and
          reinitialising the default loop actually works (patch by
          Malek Hadj-Ali).
        - implement ev_suspend and ev_resume.
        - new EV_CUSTOM revents flag for use by applications.
        - add documentation section about priorites.
        - add a glossary to the dcoumentation.
        - extend the ev_fork description slightly.
        - optimize a jump out of call_pending.

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 erroneously 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 <io.h> 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 erroneous 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.
        - entering ev_loop will not clear the ONESHOT or NONBLOCKING
          flags of any outer loops anymore.
        - add ev_async_pending.

3.1  Thu Mar 13 13:45:22 CET 2008
        - implement ev_async watchers.
        - only initialise signal pipe on demand.
        - make use of sig_atomic_t configurable.
        - improved documentation.

3.0  Mon Jan 28 13:14:47 CET 2008
        - API/ABI bump to version 3.0.
        - ev++.h includes "ev.h" by default now, not <ev.h>.
        - slightly improved documentation.
        - speed up signal detection after a fork.
        - only optionally return trace status changed in ev_child
          watchers.
        - experimental (and undocumented) loop wrappers for ev++.h.

2.01 Tue Dec 25 08:04:41 CET 2007
        - separate Changes file.
        - fix ev_path_set => ev_stat_set typo.
        - remove event_compat.h from the libev tarball.
        - change how include files are found.
        - doc updates.
        - update licenses, explicitly allow for GPL relicensing.

2.0  Sat Dec 22 17:47:03 CET 2007
        - new ev_sleep, ev_set_(io|timeout)_collect_interval.
        - removed epoll from embeddable fd set.
        - fix embed watchers.
        - renamed ev_embed.loop to other.
        - added exported Symbol tables.
        - undefine member wrapper macros at the end of ev.c.
        - respect EV_H in ev++.h.

1.86 Tue Dec 18 02:36:57 CET 2007
        - fix memleak on loop destroy (not relevant for perl).

1.85 Fri Dec 14 20:32:40 CET 2007
        - fix some aliasing issues w.r.t. timers and periodics
          (not relevant for perl).

(for historic versions refer to EV/Changes, found in the Perl interface)

0.1  Wed Oct 31 21:31:48 CET 2007
        - original version; hacked together in <24h.

Revision:	1.203
Committed:	Thu Oct 28 04:55:19 2010 UTC (13 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.202:	+2 -0 lines
Log Message:	EV_UNDEF
#	User	Rev	Content
1	root	1.14	Revision history for libev, a high-performance and full-featured event loop.
2	root	1.1
3	root	1.203	- change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
4
5	root	1.202	4.00 Mon Oct 25 12:32:12 CEST 2010
6	root	1.171	- "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
7	root	1.161	- ev_embed_stop did not correctly stop the watcher (very good
8			testcase by Vladimir Timofeev).
9	sf-exg	1.191	- ev_run will now always update the current loop time - it erroneously
10	root	1.187	didn't when idle watchers were active, causing timers not to fire.
11	root	1.179	- fix a bug where a timeout of zero caused the timer not to fire
12			in the libevent emulation (testcase by Péter Szabó).
13	root	1.164	- applied win32 fixes by Michael Lenaghan (also James Mansion).
14	root	1.166	- replace EV_MINIMAL by EV_FEATURES.
15	root	1.178	- prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
16			seems the former is much faster than the latter.
17	root	1.197	- linux kernel version detection (for inotify bug workarounds)
18			did not work properly.
19	root	1.185	- reduce the number of spurious wake-ups with the ports backend.
20	root	1.158	- remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
21	root	1.186	- do async init within ev_async_start, not ev_async_set, which avoids
22			an API quirk where the set function must be called in the C++ API
23			even when there is nothing to set.
24	root	1.174	- add (undocumented) EV_ENABLE when adding events with kqueue,
25	root	1.175	this might help with OS X, which seems to need it despite documenting
26			not to need it (helpfully pointed out by Tilghman Lesher).
27	root	1.176	- do not use poll by default on freebsd, it's broken (what isn't
28			on freebsd...).
29	root	1.195	- allow to embed epoll on kernels >= 2.6.32.
30	root	1.159	- configure now prepends -O3, not appends it, so one can still
31			override it.
32	root	1.190	- ev.pod: greatly expanded the portability section, added a porting
33			section, a description of watcher states and made lots of minor fixes.
34	root	1.160	- disable poll backend on AIX, the poll header spams the namespace
35			and it's not worth working around dead platforms (reported
36			and analyzed by Aivars Kalvans).
37	root	1.162	- improve header file compatibility of the standalone eventfd code
38			in an obscure case.
39	root	1.163	- implement EV_AVOID_STDIO option.
40			- do not use sscanf to parse linux version number (smaller, faster,
41			no sscanf dependency).
42	root	1.164	- new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
43	sf-exg	1.172	- update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
44	root	1.165	- add section on accept() problems to the manpage.
45	root	1.168	- rename EV_TIMEOUT to EV_TIMER.
46	root	1.190	- rename ev_loop_count/depth/verify/loop/unloop.
47	root	1.197	- remove ev_default_destroy and ev_default_fork.
48	root	1.168	- switch to two-digit minor version.
49	root	1.180	- work around an apparent gentoo compiler bug.
50	root	1.181	- define _DARWIN_UNLIMITED_SELECT. just so.
51	root	1.188	- use enum instead of #define for most constants.
52			- improve compatibility to older C++ compilers.
53	root	1.193	- (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
54			default arguments when compiled as C++.
55	root	1.196	- enable automake dependency tracking.
56	root	1.197	- ev_loop_new no longer leaks memory when loop creation failed.
57	root	1.198	- new ev_cleanup watcher type.
58	root	1.157
59	root	1.156	3.9 Thu Dec 31 07:59:59 CET 2009
60	root	1.155	- signalfd is no longer used by default and has to be requested
61			explicitly - this means that easy to catch bugs become hard to
62			catch race conditions, but the users have spoken.
63			- point out the unspecified signal mask in the documentation, and
64			that this is a race condition regardless of EV_SIGNALFD.
65	root	1.142	- backport inotify code to C89.
66	root	1.148	- inotify file descriptors could leak into child processes.
67	root	1.151	- ev_stat watchers could keep an errornous extra ref on the loop,
68			preventing exit when unregistering all watchers (testcases
69	root	1.150	provided by ry@tinyclouds.org).
70	root	1.143	- implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
71	root	1.145	symbols to make it easier for apps to do their own fd management.
72	root	1.144	- support EV_IDLE_ENABLE being disabled in ev++.h
73			(patch by Didier Spezia).
74	root	1.147	- take advantage of inotify_init1, if available, to set cloexec/nonblock
75			on fd creation, to avoid races.
76	root	1.150	- the signal handling pipe wasn't always initialised under windows
77			(analysed by lekma).
78	root	1.146	- changed minimum glibc requirement from glibc 2.9 to 2.7, for
79			signalfd.
80	root	1.152	- add missing string.h include (Denis F. Latypoff).
81	root	1.153	- only replace ev_stat.prev when we detect an actual difference,
82			so prev is (almost) always different to attr. this might
83	sf-exg	1.191	have caused the problems with 04_stat.t.
84	root	1.154	- add ev::timer->remaining () method to C++ API.
85	root	1.142
86	root	1.141	3.8 Sun Aug 9 14:30:45 CEST 2009
87	root	1.133	- incompatible change: do not necessarily reset signal handler
88			to SIG_DFL when a sighandler is stopped.
89	root	1.135	- ev_default_destroy did not properly free or zero some members,
90	sf-exg	1.191	potentially causing crashes and memory corruption on repeated
91	root	1.134	ev_default_destroy/ev_default_loop calls.
92	root	1.133	- take advantage of signalfd on GNU/Linux systems.
93			- document that the signal mask might be in an unspecified
94			state when using libev's signal handling.
95	root	1.136	- take advantage of some GNU/Linux calls to set cloexec/nonblock
96			on fd creation, to avoid race conditions.
97	root	1.132
98	root	1.131	3.7 Fri Jul 17 16:36:32 CEST 2009
99	root	1.128	- ev_unloop and ev_loop wrongly used a global variable to exit loops,
100			instead of using a per-loop variable (bug caught by accident...).
101			- the ev_set_io_collect_interval interpretation has changed.
102			- add new functionality: ev_set_userdata, ev_userdata,
103	root	1.126	ev_set_invoke_pending_cb, ev_set_loop_release_cb,
104	root	1.132	ev_invoke_pending, ev_pending_count, together with a long example
105			about thread locking.
106	root	1.128	- add ev_timer_remaining (as requested by Denis F. Latypoff).
107			- add ev_loop_depth.
108	root	1.124	- calling ev_unloop in fork/prepare watchers will no longer poll
109			for new events.
110	root	1.115	- Denis F. Latypoff corrected many typos in example code snippets.
111			- honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double-
112			check that the syscall number is available before trying to
113			use it (reported by ry@tinyclouds).
114	root	1.117	- use GetSystemTimeAsFileTime instead of _timeb on windows, for
115	root	1.116	slightly higher accuracy.
116	root	1.122	- properly declare ev_loop_verify and ev_now_update even when
117			!EV_MULTIPLICITY.
118	root	1.121	- do not compile in any priority code when EV_MAXPRI == EV_MINPRI.
119	root	1.123	- support EV_MINIMAL==2 for a reduced API.
120	root	1.125	- actually 0-initialise struct sigaction when installing signals.
121	root	1.127	- add section on hibernate and stopped processes to ev_timer docs.
122	root	1.115
123	root	1.113	3.6 Tue Apr 28 02:49:30 CEST 2009
124	root	1.107	- multiple timers becoming ready within an event loop iteration
125			will be invoked in the "correct" order now.
126	root	1.105	- do not leave the event loop early just because we have no active
127			watchers, fixing a problem when embedding a kqueue loop
128			that has active kernel events but no registered watchers
129			(reported by blacksand blacksand).
130	root	1.102	- correctly zero the idx values for arrays, so destroying and
131			reinitialising the default loop actually works (patch by
132			Malek Hadj-Ali).
133	root	1.108	- implement ev_suspend and ev_resume.
134	root	1.106	- new EV_CUSTOM revents flag for use by applications.
135	root	1.109	- add documentation section about priorites.
136			- add a glossary to the dcoumentation.
137	root	1.111	- extend the ev_fork description slightly.
138	root	1.112	- optimize a jump out of call_pending.
139	root	1.102
140	root	1.101	3.53 Sun Feb 15 02:38:20 CET 2009
141			- fix a bug in event pipe creation on win32 that would cause a
142			failed assertion on event loop creation (patch by Malek Hadj-Ali).
143	root	1.100	- probe for CLOCK_REALTIME support at runtime as well and fall
144			back to gettimeofday if there is an error, to support older
145			operating systems with newer header files/libraries.
146			- prefer gettimeofday over clock_gettime with USE_CLOCK_SYSCALL
147			(default most everywhere), otherwise not.
148
149	root	1.99	3.52 Wed Jan 7 21:43:02 CET 2009
150	root	1.97	- fix compilation of select backend in fd_set mode when NFDBITS is
151			missing (to get it to compile on QNX, reported by Rodrigo Campos).
152			- better select-nfds handling when select backend is in fd_set mode.
153			- diagnose fd_set overruns when select backend is in fd_set mode.
154			- due to a thinko, instead of disabling everything but
155			select on the borked OS X platform, everything but select was
156			allowed (reported by Emanuele Giaquinta).
157	root	1.95	- actually verify that local and remote port are matching in
158			libev's socketpair emulation, which makes denial-of-service
159			attacks harder (but not impossible - it's windows). Make sure
160	root	1.96	it even works under vista, which thinks that getpeer/sockname
161			should return fantasy port numbers.
162	root	1.100	- include "libev" in all assertion messages for potentially
163	root	1.97	clearer diagnostics.
164	root	1.98	- event_get_version (libevent compatibility) returned
165			a useless string instead of the expected version string
166			(patch by W.C.A. Wijngaards).
167	root	1.95
168	root	1.94	3.51 Wed Dec 24 23:00:11 CET 2008
169	root	1.91	- fix a bug where an inotify watcher was added twice, causing
170	root	1.92	freezes on hash collisions (reported and analysed by Graham Leggett).
171	root	1.87	- new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use
172			a direct syscall - slower, but no dependency on librt et al.
173	root	1.88	- assume negative return values != -1 signals success of port_getn
174			(http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52)
175			(no known failure reports, but it doesn't hurt).
176	root	1.93	- fork detection in ev_embed now stops and restarts the watcher
177			automatically.
178	root	1.89	- EXPERIMENTAL: default the method to operator () in ev++.h,
179			to make it nicer to use functors (requested by Benedek László).
180			- fixed const object callbacks in ev++.h.
181	root	1.90	- replaced loop_ref argument of watcher.set (loop) by a direct
182			ev_loop * in ev++.h, to avoid clashes with functor patch.
183	root	1.91	- do not try to watch the empty string via inotify.
184	root	1.92	- inotify watchers could be leaked under certain circumstances.
185			- OS X 10.5 is actually even more broken than earlier versions,
186			so fall back to select on that piece of garbage.
187	root	1.93	- fixed some weirdness in the ev_embed documentation.
188	root	1.87
189	root	1.86	3.49 Wed Nov 19 11:26:53 CET 2008
190	root	1.83	- ev_stat watchers will now use inotify as a mere hint on
191			kernels <2.6.25, or if the filesystem is not in the
192			"known to be good" list.
193	root	1.84	- better mingw32 compatibility (it's not as borked as native win32)
194			(analysed by Roger Pack).
195	root	1.85	- include stdio.h in the example program, as too many people are
196			confused by the weird C language otherwise. I guess the next thing
197			I get told is that the "..." ellipses in the examples don't compile
198			with their C compiler.
199	root	1.83
200	root	1.80	3.48 Thu Oct 30 09:02:37 CET 2008
201	root	1.71	- further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
202			backend by assuming the kernel event mask hasn't changed if
203			ADD fails with EEXIST.
204	root	1.75	- work around spurious event notification bugs in epoll by using
205	root	1.77	a 32-bit generation counter. recreate kernel state if we receive
206	root	1.78	spurious notifications or unwanted events. this is very costly,
207			but I didn't come up with this horrible design.
208	root	1.71	- use memset to initialise most arrays now and do away with the
209			init functions.
210	root	1.72	- expand time-out strategies into a "Be smart about timeouts" section.
211			- drop the "struct" from all ev_watcher declarations in the
212	root	1.73	documentation and did other clarifications (yeah, it was a mistake
213			to have a struct AND a function called ev_loop).
214	root	1.74	- fix a bug where ev_default would not initialise the default
215			loop again after it was destroyed with ev_default_destroy.
216	root	1.79	- rename syserr to ev_syserr to avoid name clashes when embedding,
217			do similar changes for event.c.
218	root	1.71
219	root	1.69	3.45 Tue Oct 21 21:59:26 CEST 2008
220	root	1.67	- disable inotify usage on linux <2.6.25, as it is broken
221			(reported by Yoann Vandoorselaere).
222	sf-exg	1.191	- ev_stat erroneously would try to add inotify watchers
223	root	1.68	even when inotify wasn't available (this should only
224	root	1.67	have a performance impact).
225	root	1.65	- ev_once now passes both timeout and io to the callback if both
226			occur concurrently, instead of giving timeouts precedence.
227	root	1.66	- disable EV_USE_INOTIFY when sys/inotify.h is too old.
228	root	1.65
229	root	1.62	3.44 Mon Sep 29 05:18:39 CEST 2008
230			- embed watchers now automatically invoke ev_loop_fork on the
231			embedded loop when the parent loop forks.
232	root	1.58	- new function: ev_now_update (loop).
233	root	1.57	- verify_watcher was not marked static.
234	root	1.59	- improve the "associating..." manpage section.
235	root	1.60	- documentation tweaks here and there.
236	root	1.57
237	root	1.56	3.43 Sun Jul 6 05:34:41 CEST 2008
238	root	1.54	- include more include files on windows to get struct _stati64
239	root	1.56	(reported by Chris Hulbert, but doesn't quite fix his issue).
240	root	1.53	- add missing #include <io.h> in ev.c on windows (reported by
241			Matt Tolton).
242
243	root	1.52	3.42 Tue Jun 17 12:12:07 CEST 2008
244	root	1.50	- work around yet another windows bug: FD_SET actually adds fd's
245			multiple times to the fd_SET, despite official MSN docs claiming
246	root	1.51	otherwise. Reported and well-analysed by Matt Tolton.
247			- define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile
248	root	1.48	(reported any analysed by Chris Hulbert).
249	root	1.49	- fix a bug in ev_ebadf (this function is only used to catch
250			programming errors in the libev user). reported by Matt Tolton.
251			- fix a bug in fd_intern on win32 (could lead to compile errors
252			under some circumstances, but would work correctly if it compiles).
253			reported by Matt Tolton.
254	root	1.50	- (try to) work around missing lstat on windows.
255	root	1.45	- pass in the write fd set as except fd set under windows. windows
256	root	1.46	is so uncontrollably lame that it requires this. this means that
257			switching off oobinline is not supported (but tcp/ip doesn't
258			have oob, so that would be stupid anyways.
259	root	1.47	- use posix module symbol to auto-detect monotonic clock presence
260			and some other default values.
261	root	1.45
262	root	1.44	3.41 Fri May 23 18:42:54 CEST 2008
263	root	1.46	- work around an obscure bug in winsocket select: if you
264	root	1.40	provide only empty fd sets then select returns WSAEINVAL. how sucky.
265	root	1.41	- improve timer scheduling stability and reduce use of time_epsilon.
266	root	1.36	- use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces
267			codesize and makes for better cache-efficiency.
268			- use 3-based 4-heap for !EV_MINIMAL. this makes better use
269			of cpu cache lines and gives better growth behaviour than
270			2-based heaps.
271	root	1.38	- cache timestamp within heap for !EV_MINIMAL, to avoid random
272			memory accesses.
273			- document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT.
274	root	1.33	- fix a potential aliasing issue in ev_timer_again.
275	root	1.35	- add/document ev_periodic_at, retract direct access to ->at.
276			- improve ev_stat docs.
277			- add portability requirements section.
278	root	1.39	- fix manpage headers etc.
279	root	1.40	- normalise WSA error codes to lower range on windows.
280	root	1.43	- add consistency check code that can be called automatically
281			or on demand to check for internal structures (ev_loop_verify).
282	root	1.31
283	root	1.30	3.31 Wed Apr 16 20:45:04 CEST 2008
284			- added last minute fix for ev_poll.c by Brandon Black.
285	root	1.29
286	root	1.28	3.3 Wed Apr 16 19:04:10 CEST 2008
287	root	1.23	- event_base_loopexit should return 0 on success
288			(W.C.A. Wijngaards).
289	root	1.20	- added linux eventfd support.
290			- try to autodetect epoll and inotify support
291			by libc header version if not using autoconf.
292	root	1.21	- new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_.
293			- declare functions defined in ev.h as inline if
294			C99 or gcc are available.
295			- enable inlining with gcc versions 2 and 3.
296	root	1.25	- work around broken poll implementations potentially
297			not clearing revents field in ev_poll (Brandon Black)
298			(no such systems are known at this time).
299	root	1.23	- work around a bug in realloc on openbsd and darwin,
300	sf-exg	1.191	also makes the erroneous valgrind complaints
301	root	1.23	go away (noted by various people).
302	root	1.26	- fix ev_async_pending, add c++ wrapper for ev_async
303	sf-exg	1.191	(based on patch sent by Johannes Deisenhofer).
304	root	1.26	- add sensible set method to ev::embed.
305	root	1.27	- made integer constants type int in ev.h.
306	root	1.20
307	root	1.19	3.2 Wed Apr 2 17:11:19 CEST 2008
308	root	1.15	- fix a 64 bit overflow issue in the select backend,
309			by using fd_mask instead of int for the mask.
310	root	1.16	- rename internal sighandler to avoid clash with very old perls.
311	root	1.18	- entering ev_loop will not clear the ONESHOT or NONBLOCKING
312			flags of any outer loops anymore.
313	root	1.17	- add ev_async_pending.
314	root	1.15
315	root	1.14	3.1 Thu Mar 13 13:45:22 CET 2008
316	root	1.12	- implement ev_async watchers.
317	root	1.10	- only initialise signal pipe on demand.
318			- make use of sig_atomic_t configurable.
319	root	1.14	- improved documentation.
320	root	1.10
321	root	1.9	3.0 Mon Jan 28 13:14:47 CET 2008
322	root	1.6	- API/ABI bump to version 3.0.
323	root	1.4	- ev++.h includes "ev.h" by default now, not <ev.h>.
324			- slightly improved documentation.
325	root	1.5	- speed up signal detection after a fork.
326	root	1.6	- only optionally return trace status changed in ev_child
327			watchers.
328	root	1.8	- experimental (and undocumented) loop wrappers for ev++.h.
329	root	1.4
330	root	1.2	2.01 Tue Dec 25 08:04:41 CET 2007
331	root	1.3	- separate Changes file.
332	root	1.2	- fix ev_path_set => ev_stat_set typo.
333			- remove event_compat.h from the libev tarball.
334			- change how include files are found.
335			- doc updates.
336			- update licenses, explicitly allow for GPL relicensing.
337
338			2.0 Sat Dec 22 17:47:03 CET 2007
339			- new ev_sleep, ev_set_(io\|timeout)_collect_interval.
340			- removed epoll from embeddable fd set.
341			- fix embed watchers.
342			- renamed ev_embed.loop to other.
343			- added exported Symbol tables.
344			- undefine member wrapper macros at the end of ev.c.
345			- respect EV_H in ev++.h.
346
347			1.86 Tue Dec 18 02:36:57 CET 2007
348			- fix memleak on loop destroy (not relevant for perl).
349
350			1.85 Fri Dec 14 20:32:40 CET 2007
351			- fix some aliasing issues w.r.t. timers and periodics
352			(not relevant for perl).
353
354			(for historic versions refer to EV/Changes, found in the Perl interface)
355
356	root	1.1	0.1 Wed Oct 31 21:31:48 CET 2007
357			- original version; hacked together in <24h.
358