[ViewVC] Annotation of: cvs/libev/Changes

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

WISH? monotonic clocks times/GetTickCount for coarse corrections?

        - 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
          an 8-bit generation counter.
        - 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.

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:	1.75
Committed:	Mon Oct 27 11:08:29 2008 UTC (15 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.74:	+2 -0 lines
Log Message:	work around epoll spurious notifications
#	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	1.70	WISH? monotonic clocks times/GetTickCount for coarse corrections?
4	root	1.71
5			- further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
6			backend by assuming the kernel event mask hasn't changed if
7			ADD fails with EEXIST.
8	root	1.75	- work around spurious event notification bugs in epoll by using
9			an 8-bit generation counter.
10	root	1.71	- use memset to initialise most arrays now and do away with the
11			init functions.
12	root	1.72	- expand time-out strategies into a "Be smart about timeouts" section.
13			- drop the "struct" from all ev_watcher declarations in the
14	root	1.73	documentation and did other clarifications (yeah, it was a mistake
15			to have a struct AND a function called ev_loop).
16	root	1.74	- fix a bug where ev_default would not initialise the default
17			loop again after it was destroyed with ev_default_destroy.
18	root	1.71
19	root	1.69	3.45 Tue Oct 21 21:59:26 CEST 2008
20	root	1.67	- disable inotify usage on linux <2.6.25, as it is broken
21			(reported by Yoann Vandoorselaere).
22			- ev_stat errornously would try to add inotify watchers
23	root	1.68	even when inotify wasn't available (this should only
24	root	1.67	have a performance impact).
25	root	1.65	- ev_once now passes both timeout and io to the callback if both
26			occur concurrently, instead of giving timeouts precedence.
27	root	1.66	- disable EV_USE_INOTIFY when sys/inotify.h is too old.
28	root	1.65
29	root	1.62	3.44 Mon Sep 29 05:18:39 CEST 2008
30			- embed watchers now automatically invoke ev_loop_fork on the
31			embedded loop when the parent loop forks.
32	root	1.58	- new function: ev_now_update (loop).
33	root	1.57	- verify_watcher was not marked static.
34	root	1.59	- improve the "associating..." manpage section.
35	root	1.60	- documentation tweaks here and there.
36	root	1.57
37	root	1.56	3.43 Sun Jul 6 05:34:41 CEST 2008
38	root	1.54	- include more include files on windows to get struct _stati64
39	root	1.56	(reported by Chris Hulbert, but doesn't quite fix his issue).
40	root	1.53	- add missing #include <io.h> in ev.c on windows (reported by
41			Matt Tolton).
42
43	root	1.52	3.42 Tue Jun 17 12:12:07 CEST 2008
44	root	1.50	- work around yet another windows bug: FD_SET actually adds fd's
45			multiple times to the fd_SET, despite official MSN docs claiming
46	root	1.51	otherwise. Reported and well-analysed by Matt Tolton.
47			- define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile
48	root	1.48	(reported any analysed by Chris Hulbert).
49	root	1.49	- fix a bug in ev_ebadf (this function is only used to catch
50			programming errors in the libev user). reported by Matt Tolton.
51			- fix a bug in fd_intern on win32 (could lead to compile errors
52			under some circumstances, but would work correctly if it compiles).
53			reported by Matt Tolton.
54	root	1.50	- (try to) work around missing lstat on windows.
55	root	1.45	- pass in the write fd set as except fd set under windows. windows
56	root	1.46	is so uncontrollably lame that it requires this. this means that
57			switching off oobinline is not supported (but tcp/ip doesn't
58			have oob, so that would be stupid anyways.
59	root	1.47	- use posix module symbol to auto-detect monotonic clock presence
60			and some other default values.
61	root	1.45
62	root	1.44	3.41 Fri May 23 18:42:54 CEST 2008
63	root	1.46	- work around an obscure bug in winsocket select: if you
64	root	1.40	provide only empty fd sets then select returns WSAEINVAL. how sucky.
65	root	1.41	- improve timer scheduling stability and reduce use of time_epsilon.
66	root	1.36	- use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces
67			codesize and makes for better cache-efficiency.
68			- use 3-based 4-heap for !EV_MINIMAL. this makes better use
69			of cpu cache lines and gives better growth behaviour than
70			2-based heaps.
71	root	1.38	- cache timestamp within heap for !EV_MINIMAL, to avoid random
72			memory accesses.
73			- document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT.
74	root	1.33	- fix a potential aliasing issue in ev_timer_again.
75	root	1.35	- add/document ev_periodic_at, retract direct access to ->at.
76			- improve ev_stat docs.
77			- add portability requirements section.
78	root	1.39	- fix manpage headers etc.
79	root	1.40	- normalise WSA error codes to lower range on windows.
80	root	1.43	- add consistency check code that can be called automatically
81			or on demand to check for internal structures (ev_loop_verify).
82	root	1.31
83	root	1.30	3.31 Wed Apr 16 20:45:04 CEST 2008
84			- added last minute fix for ev_poll.c by Brandon Black.
85	root	1.29
86	root	1.28	3.3 Wed Apr 16 19:04:10 CEST 2008
87	root	1.23	- event_base_loopexit should return 0 on success
88			(W.C.A. Wijngaards).
89	root	1.20	- added linux eventfd support.
90			- try to autodetect epoll and inotify support
91			by libc header version if not using autoconf.
92	root	1.21	- new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_.
93			- declare functions defined in ev.h as inline if
94			C99 or gcc are available.
95			- enable inlining with gcc versions 2 and 3.
96	root	1.25	- work around broken poll implementations potentially
97			not clearing revents field in ev_poll (Brandon Black)
98			(no such systems are known at this time).
99	root	1.23	- work around a bug in realloc on openbsd and darwin,
100			also makes the errornous valgrind complaints
101			go away (noted by various people).
102	root	1.26	- fix ev_async_pending, add c++ wrapper for ev_async
103			(based on patch sent by Johannes Deisenhofer.
104			- add sensible set method to ev::embed.
105	root	1.27	- made integer constants type int in ev.h.
106	root	1.20
107	root	1.19	3.2 Wed Apr 2 17:11:19 CEST 2008
108	root	1.15	- fix a 64 bit overflow issue in the select backend,
109			by using fd_mask instead of int for the mask.
110	root	1.16	- rename internal sighandler to avoid clash with very old perls.
111	root	1.18	- entering ev_loop will not clear the ONESHOT or NONBLOCKING
112			flags of any outer loops anymore.
113	root	1.17	- add ev_async_pending.
114	root	1.15
115	root	1.14	3.1 Thu Mar 13 13:45:22 CET 2008
116	root	1.12	- implement ev_async watchers.
117	root	1.10	- only initialise signal pipe on demand.
118			- make use of sig_atomic_t configurable.
119	root	1.14	- improved documentation.
120	root	1.10
121	root	1.9	3.0 Mon Jan 28 13:14:47 CET 2008
122	root	1.6	- API/ABI bump to version 3.0.
123	root	1.4	- ev++.h includes "ev.h" by default now, not <ev.h>.
124			- slightly improved documentation.
125	root	1.5	- speed up signal detection after a fork.
126	root	1.6	- only optionally return trace status changed in ev_child
127			watchers.
128	root	1.8	- experimental (and undocumented) loop wrappers for ev++.h.
129	root	1.4
130	root	1.2	2.01 Tue Dec 25 08:04:41 CET 2007
131	root	1.3	- separate Changes file.
132	root	1.2	- fix ev_path_set => ev_stat_set typo.
133			- remove event_compat.h from the libev tarball.
134			- change how include files are found.
135			- doc updates.
136			- update licenses, explicitly allow for GPL relicensing.
137
138			2.0 Sat Dec 22 17:47:03 CET 2007
139			- new ev_sleep, ev_set_(io\|timeout)_collect_interval.
140			- removed epoll from embeddable fd set.
141			- fix embed watchers.
142			- renamed ev_embed.loop to other.
143			- added exported Symbol tables.
144			- undefine member wrapper macros at the end of ev.c.
145			- respect EV_H in ev++.h.
146
147			1.86 Tue Dec 18 02:36:57 CET 2007
148			- fix memleak on loop destroy (not relevant for perl).
149
150			1.85 Fri Dec 14 20:32:40 CET 2007
151			- fix some aliasing issues w.r.t. timers and periodics
152			(not relevant for perl).
153
154			(for historic versions refer to EV/Changes, found in the Perl interface)
155
156	root	1.1	0.1 Wed Oct 31 21:31:48 CET 2007
157			- original version; hacked together in <24h.
158