[ViewVC] Annotation of: cvs/libev/Changes

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

TODO: somehow unblock procmask?
        - backport inotify code to C89.
        - inotify file descriptors could leak into child processes.
        - inotify usage would keep an errornous extra ref on the loop,
          preventing exit when unregistering all watchers (testcase
          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).
        - point out the unspecified signal mask in the documentation.
        - 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.

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 repated
          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 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 <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 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.
        - 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:	1.150
Committed:	Sat Nov 14 00:15:21 2009 UTC (14 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.149:	+5 -0 lines
Log Message:	inotify should not keep a reference
#	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	1.149	TODO: somehow unblock procmask?
4	root	1.142	- backport inotify code to C89.
5	root	1.148	- inotify file descriptors could leak into child processes.
6	root	1.150	- inotify usage would keep an errornous extra ref on the loop,
7			preventing exit when unregistering all watchers (testcase
8			provided by ry@tinyclouds.org).
9	root	1.143	- implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
10	root	1.145	symbols to make it easier for apps to do their own fd management.
11	root	1.144	- support EV_IDLE_ENABLE being disabled in ev++.h
12			(patch by Didier Spezia).
13	root	1.145	- point out the unspecified signal mask in the documentation.
14	root	1.147	- take advantage of inotify_init1, if available, to set cloexec/nonblock
15			on fd creation, to avoid races.
16	root	1.150	- the signal handling pipe wasn't always initialised under windows
17			(analysed by lekma).
18	root	1.146	- changed minimum glibc requirement from glibc 2.9 to 2.7, for
19			signalfd.
20	root	1.142
21	root	1.141	3.8 Sun Aug 9 14:30:45 CEST 2009
22	root	1.133	- incompatible change: do not necessarily reset signal handler
23			to SIG_DFL when a sighandler is stopped.
24	root	1.135	- ev_default_destroy did not properly free or zero some members,
25	root	1.134	potentially causing crashes and memory corruption on repated
26			ev_default_destroy/ev_default_loop calls.
27	root	1.133	- take advantage of signalfd on GNU/Linux systems.
28			- document that the signal mask might be in an unspecified
29			state when using libev's signal handling.
30	root	1.136	- take advantage of some GNU/Linux calls to set cloexec/nonblock
31			on fd creation, to avoid race conditions.
32	root	1.132
33	root	1.131	3.7 Fri Jul 17 16:36:32 CEST 2009
34	root	1.128	- ev_unloop and ev_loop wrongly used a global variable to exit loops,
35			instead of using a per-loop variable (bug caught by accident...).
36			- the ev_set_io_collect_interval interpretation has changed.
37			- add new functionality: ev_set_userdata, ev_userdata,
38	root	1.126	ev_set_invoke_pending_cb, ev_set_loop_release_cb,
39	root	1.132	ev_invoke_pending, ev_pending_count, together with a long example
40			about thread locking.
41	root	1.128	- add ev_timer_remaining (as requested by Denis F. Latypoff).
42			- add ev_loop_depth.
43	root	1.124	- calling ev_unloop in fork/prepare watchers will no longer poll
44			for new events.
45	root	1.115	- Denis F. Latypoff corrected many typos in example code snippets.
46			- honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double-
47			check that the syscall number is available before trying to
48			use it (reported by ry@tinyclouds).
49	root	1.117	- use GetSystemTimeAsFileTime instead of _timeb on windows, for
50	root	1.116	slightly higher accuracy.
51	root	1.122	- properly declare ev_loop_verify and ev_now_update even when
52			!EV_MULTIPLICITY.
53	root	1.121	- do not compile in any priority code when EV_MAXPRI == EV_MINPRI.
54	root	1.123	- support EV_MINIMAL==2 for a reduced API.
55	root	1.125	- actually 0-initialise struct sigaction when installing signals.
56	root	1.127	- add section on hibernate and stopped processes to ev_timer docs.
57	root	1.115
58	root	1.113	3.6 Tue Apr 28 02:49:30 CEST 2009
59	root	1.107	- multiple timers becoming ready within an event loop iteration
60			will be invoked in the "correct" order now.
61	root	1.105	- do not leave the event loop early just because we have no active
62			watchers, fixing a problem when embedding a kqueue loop
63			that has active kernel events but no registered watchers
64			(reported by blacksand blacksand).
65	root	1.102	- correctly zero the idx values for arrays, so destroying and
66			reinitialising the default loop actually works (patch by
67			Malek Hadj-Ali).
68	root	1.108	- implement ev_suspend and ev_resume.
69	root	1.106	- new EV_CUSTOM revents flag for use by applications.
70	root	1.109	- add documentation section about priorites.
71			- add a glossary to the dcoumentation.
72	root	1.111	- extend the ev_fork description slightly.
73	root	1.112	- optimize a jump out of call_pending.
74	root	1.102
75	root	1.101	3.53 Sun Feb 15 02:38:20 CET 2009
76			- fix a bug in event pipe creation on win32 that would cause a
77			failed assertion on event loop creation (patch by Malek Hadj-Ali).
78	root	1.100	- probe for CLOCK_REALTIME support at runtime as well and fall
79			back to gettimeofday if there is an error, to support older
80			operating systems with newer header files/libraries.
81			- prefer gettimeofday over clock_gettime with USE_CLOCK_SYSCALL
82			(default most everywhere), otherwise not.
83
84	root	1.99	3.52 Wed Jan 7 21:43:02 CET 2009
85	root	1.97	- fix compilation of select backend in fd_set mode when NFDBITS is
86			missing (to get it to compile on QNX, reported by Rodrigo Campos).
87			- better select-nfds handling when select backend is in fd_set mode.
88			- diagnose fd_set overruns when select backend is in fd_set mode.
89			- due to a thinko, instead of disabling everything but
90			select on the borked OS X platform, everything but select was
91			allowed (reported by Emanuele Giaquinta).
92	root	1.95	- actually verify that local and remote port are matching in
93			libev's socketpair emulation, which makes denial-of-service
94			attacks harder (but not impossible - it's windows). Make sure
95	root	1.96	it even works under vista, which thinks that getpeer/sockname
96			should return fantasy port numbers.
97	root	1.100	- include "libev" in all assertion messages for potentially
98	root	1.97	clearer diagnostics.
99	root	1.98	- event_get_version (libevent compatibility) returned
100			a useless string instead of the expected version string
101			(patch by W.C.A. Wijngaards).
102	root	1.95
103	root	1.94	3.51 Wed Dec 24 23:00:11 CET 2008
104	root	1.91	- fix a bug where an inotify watcher was added twice, causing
105	root	1.92	freezes on hash collisions (reported and analysed by Graham Leggett).
106	root	1.87	- new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use
107			a direct syscall - slower, but no dependency on librt et al.
108	root	1.88	- assume negative return values != -1 signals success of port_getn
109			(http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52)
110			(no known failure reports, but it doesn't hurt).
111	root	1.93	- fork detection in ev_embed now stops and restarts the watcher
112			automatically.
113	root	1.89	- EXPERIMENTAL: default the method to operator () in ev++.h,
114			to make it nicer to use functors (requested by Benedek László).
115			- fixed const object callbacks in ev++.h.
116	root	1.90	- replaced loop_ref argument of watcher.set (loop) by a direct
117			ev_loop * in ev++.h, to avoid clashes with functor patch.
118	root	1.91	- do not try to watch the empty string via inotify.
119	root	1.92	- inotify watchers could be leaked under certain circumstances.
120			- OS X 10.5 is actually even more broken than earlier versions,
121			so fall back to select on that piece of garbage.
122	root	1.93	- fixed some weirdness in the ev_embed documentation.
123	root	1.87
124	root	1.86	3.49 Wed Nov 19 11:26:53 CET 2008
125	root	1.83	- ev_stat watchers will now use inotify as a mere hint on
126			kernels <2.6.25, or if the filesystem is not in the
127			"known to be good" list.
128	root	1.84	- better mingw32 compatibility (it's not as borked as native win32)
129			(analysed by Roger Pack).
130	root	1.85	- include stdio.h in the example program, as too many people are
131			confused by the weird C language otherwise. I guess the next thing
132			I get told is that the "..." ellipses in the examples don't compile
133			with their C compiler.
134	root	1.83
135	root	1.80	3.48 Thu Oct 30 09:02:37 CET 2008
136	root	1.71	- further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
137			backend by assuming the kernel event mask hasn't changed if
138			ADD fails with EEXIST.
139	root	1.75	- work around spurious event notification bugs in epoll by using
140	root	1.77	a 32-bit generation counter. recreate kernel state if we receive
141	root	1.78	spurious notifications or unwanted events. this is very costly,
142			but I didn't come up with this horrible design.
143	root	1.71	- use memset to initialise most arrays now and do away with the
144			init functions.
145	root	1.72	- expand time-out strategies into a "Be smart about timeouts" section.
146			- drop the "struct" from all ev_watcher declarations in the
147	root	1.73	documentation and did other clarifications (yeah, it was a mistake
148			to have a struct AND a function called ev_loop).
149	root	1.74	- fix a bug where ev_default would not initialise the default
150			loop again after it was destroyed with ev_default_destroy.
151	root	1.79	- rename syserr to ev_syserr to avoid name clashes when embedding,
152			do similar changes for event.c.
153	root	1.71
154	root	1.69	3.45 Tue Oct 21 21:59:26 CEST 2008
155	root	1.67	- disable inotify usage on linux <2.6.25, as it is broken
156			(reported by Yoann Vandoorselaere).
157			- ev_stat errornously would try to add inotify watchers
158	root	1.68	even when inotify wasn't available (this should only
159	root	1.67	have a performance impact).
160	root	1.65	- ev_once now passes both timeout and io to the callback if both
161			occur concurrently, instead of giving timeouts precedence.
162	root	1.66	- disable EV_USE_INOTIFY when sys/inotify.h is too old.
163	root	1.65
164	root	1.62	3.44 Mon Sep 29 05:18:39 CEST 2008
165			- embed watchers now automatically invoke ev_loop_fork on the
166			embedded loop when the parent loop forks.
167	root	1.58	- new function: ev_now_update (loop).
168	root	1.57	- verify_watcher was not marked static.
169	root	1.59	- improve the "associating..." manpage section.
170	root	1.60	- documentation tweaks here and there.
171	root	1.57
172	root	1.56	3.43 Sun Jul 6 05:34:41 CEST 2008
173	root	1.54	- include more include files on windows to get struct _stati64
174	root	1.56	(reported by Chris Hulbert, but doesn't quite fix his issue).
175	root	1.53	- add missing #include <io.h> in ev.c on windows (reported by
176			Matt Tolton).
177
178	root	1.52	3.42 Tue Jun 17 12:12:07 CEST 2008
179	root	1.50	- work around yet another windows bug: FD_SET actually adds fd's
180			multiple times to the fd_SET, despite official MSN docs claiming
181	root	1.51	otherwise. Reported and well-analysed by Matt Tolton.
182			- define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile
183	root	1.48	(reported any analysed by Chris Hulbert).
184	root	1.49	- fix a bug in ev_ebadf (this function is only used to catch
185			programming errors in the libev user). reported by Matt Tolton.
186			- fix a bug in fd_intern on win32 (could lead to compile errors
187			under some circumstances, but would work correctly if it compiles).
188			reported by Matt Tolton.
189	root	1.50	- (try to) work around missing lstat on windows.
190	root	1.45	- pass in the write fd set as except fd set under windows. windows
191	root	1.46	is so uncontrollably lame that it requires this. this means that
192			switching off oobinline is not supported (but tcp/ip doesn't
193			have oob, so that would be stupid anyways.
194	root	1.47	- use posix module symbol to auto-detect monotonic clock presence
195			and some other default values.
196	root	1.45
197	root	1.44	3.41 Fri May 23 18:42:54 CEST 2008
198	root	1.46	- work around an obscure bug in winsocket select: if you
199	root	1.40	provide only empty fd sets then select returns WSAEINVAL. how sucky.
200	root	1.41	- improve timer scheduling stability and reduce use of time_epsilon.
201	root	1.36	- use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces
202			codesize and makes for better cache-efficiency.
203			- use 3-based 4-heap for !EV_MINIMAL. this makes better use
204			of cpu cache lines and gives better growth behaviour than
205			2-based heaps.
206	root	1.38	- cache timestamp within heap for !EV_MINIMAL, to avoid random
207			memory accesses.
208			- document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT.
209	root	1.33	- fix a potential aliasing issue in ev_timer_again.
210	root	1.35	- add/document ev_periodic_at, retract direct access to ->at.
211			- improve ev_stat docs.
212			- add portability requirements section.
213	root	1.39	- fix manpage headers etc.
214	root	1.40	- normalise WSA error codes to lower range on windows.
215	root	1.43	- add consistency check code that can be called automatically
216			or on demand to check for internal structures (ev_loop_verify).
217	root	1.31
218	root	1.30	3.31 Wed Apr 16 20:45:04 CEST 2008
219			- added last minute fix for ev_poll.c by Brandon Black.
220	root	1.29
221	root	1.28	3.3 Wed Apr 16 19:04:10 CEST 2008
222	root	1.23	- event_base_loopexit should return 0 on success
223			(W.C.A. Wijngaards).
224	root	1.20	- added linux eventfd support.
225			- try to autodetect epoll and inotify support
226			by libc header version if not using autoconf.
227	root	1.21	- new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_.
228			- declare functions defined in ev.h as inline if
229			C99 or gcc are available.
230			- enable inlining with gcc versions 2 and 3.
231	root	1.25	- work around broken poll implementations potentially
232			not clearing revents field in ev_poll (Brandon Black)
233			(no such systems are known at this time).
234	root	1.23	- work around a bug in realloc on openbsd and darwin,
235			also makes the errornous valgrind complaints
236			go away (noted by various people).
237	root	1.26	- fix ev_async_pending, add c++ wrapper for ev_async
238			(based on patch sent by Johannes Deisenhofer.
239			- add sensible set method to ev::embed.
240	root	1.27	- made integer constants type int in ev.h.
241	root	1.20
242	root	1.19	3.2 Wed Apr 2 17:11:19 CEST 2008
243	root	1.15	- fix a 64 bit overflow issue in the select backend,
244			by using fd_mask instead of int for the mask.
245	root	1.16	- rename internal sighandler to avoid clash with very old perls.
246	root	1.18	- entering ev_loop will not clear the ONESHOT or NONBLOCKING
247			flags of any outer loops anymore.
248	root	1.17	- add ev_async_pending.
249	root	1.15
250	root	1.14	3.1 Thu Mar 13 13:45:22 CET 2008
251	root	1.12	- implement ev_async watchers.
252	root	1.10	- only initialise signal pipe on demand.
253			- make use of sig_atomic_t configurable.
254	root	1.14	- improved documentation.
255	root	1.10
256	root	1.9	3.0 Mon Jan 28 13:14:47 CET 2008
257	root	1.6	- API/ABI bump to version 3.0.
258	root	1.4	- ev++.h includes "ev.h" by default now, not <ev.h>.
259			- slightly improved documentation.
260	root	1.5	- speed up signal detection after a fork.
261	root	1.6	- only optionally return trace status changed in ev_child
262			watchers.
263	root	1.8	- experimental (and undocumented) loop wrappers for ev++.h.
264	root	1.4
265	root	1.2	2.01 Tue Dec 25 08:04:41 CET 2007
266	root	1.3	- separate Changes file.
267	root	1.2	- fix ev_path_set => ev_stat_set typo.
268			- remove event_compat.h from the libev tarball.
269			- change how include files are found.
270			- doc updates.
271			- update licenses, explicitly allow for GPL relicensing.
272
273			2.0 Sat Dec 22 17:47:03 CET 2007
274			- new ev_sleep, ev_set_(io\|timeout)_collect_interval.
275			- removed epoll from embeddable fd set.
276			- fix embed watchers.
277			- renamed ev_embed.loop to other.
278			- added exported Symbol tables.
279			- undefine member wrapper macros at the end of ev.c.
280			- respect EV_H in ev++.h.
281
282			1.86 Tue Dec 18 02:36:57 CET 2007
283			- fix memleak on loop destroy (not relevant for perl).
284
285			1.85 Fri Dec 14 20:32:40 CET 2007
286			- fix some aliasing issues w.r.t. timers and periodics
287			(not relevant for perl).
288
289			(for historic versions refer to EV/Changes, found in the Perl interface)
290
291	root	1.1	0.1 Wed Oct 31 21:31:48 CET 2007
292			- original version; hacked together in <24h.
293